CN116101872B - Method for installing steel wire rope of elevator - Google Patents
Method for installing steel wire rope of elevator Download PDFInfo
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- CN116101872B CN116101872B CN202310372029.1A CN202310372029A CN116101872B CN 116101872 B CN116101872 B CN 116101872B CN 202310372029 A CN202310372029 A CN 202310372029A CN 116101872 B CN116101872 B CN 116101872B
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- car
- bearing
- wire rope
- steel wire
- power assisting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B19/00—Mining-hoist operation
- B66B19/02—Installing or exchanging ropes or cables
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B17/00—Hoistway equipment
- B66B17/12—Counterpoises
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B7/00—Other common features of elevators
- B66B7/06—Arrangements of ropes or cables
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B50/00—Energy efficient technologies in elevators, escalators and moving walkways, e.g. energy saving or recuperation technologies
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- Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
Abstract
The application belongs to the technical field of elevator equipment, and particularly relates to a method for installing a steel wire rope of an elevator. The elevator comprises a bearing beam, at least two bearing diverting pulleys, an upper car beam and at least two groups of car diverting pulleys, and the two bearing diverting pulleys are opposite to each other along the position between two adjacent groups of car diverting pulleys in the vertical direction. The installation method of the steel wire rope comprises the following steps: the steel wire rope is lapped on the elevator car diverting pulley and the bearing diverting pulley, and the steel wire rope is lapped on the lower side of the elevator car diverting pulley and the upper side of the bearing diverting pulley; installing a power assisting mechanism on the upper cross beam of the car, which is opposite to the two adjacent bearing diverting pulleys, and enabling the upper cross beam of the car to elastically flex and deform towards the bearing cross beam through the power assisting mechanism; tightening the steel wire rope; and the power assisting mechanism is disassembled, so that the elastic deflection deformation of the upper cross beam of the car is eliminated. By the technical scheme, the problem that a steel wire rope between two diverting pulleys of the spandrel girder falls down and is not tightened is solved.
Description
Technical Field
The application belongs to the technical field of elevator equipment, and particularly relates to a method for installing a steel wire rope of an elevator.
Background
When the width of the car of the elevator is large, a certain amount of drop is inevitably generated by the wire rope between the two load-bearing diverting pulleys mounted on the load-bearing beam. The falling amount enables the steel wire rope to be in an untrawn state, and the falling amount is harmful to the running of the lift car in the running process of the lift. And this hazard needs to be eliminated, avoided.
Disclosure of Invention
The embodiment of the application aims at providing a method for installing a steel wire rope of a lifting elevator, which aims at solving the problem that the steel wire rope between two diverting pulleys of a spandrel girder is not stretched due to falling.
In order to achieve the above purpose, the technical scheme adopted in the embodiment of the application is as follows: the method for installing the steel wire rope of the elevator comprises a bearing beam, at least two bearing diverting pulleys, an upper car beam and at least two groups of elevator car diverting pulleys, wherein the at least two bearing diverting pulleys are arranged on the bearing beam at intervals, the at least two groups of elevator car diverting pulleys are arranged on the upper car beam, and the positions between the two adjacent groups of elevator car diverting pulleys and the two bearing diverting pulleys are arranged opposite to each other along the vertical direction;
the installation method of the steel wire rope of the elevator comprises the following steps:
the steel wire rope is lapped on the elevator car diverting pulley and the bearing diverting pulley, and the steel wire rope is lapped on the lower side of the elevator car diverting pulley and the upper side of the bearing diverting pulley;
installing a power assisting mechanism on the upper cross beam of the car, which is opposite to the two adjacent bearing diverting pulleys, and enabling the upper cross beam of the car to elastically flex and deform towards the bearing cross beam through the power assisting mechanism;
tightening the steel wire rope;
and the power assisting mechanism is disassembled, so that the elastic deflection deformation of the upper cross beam of the car is eliminated.
By the aid of the mounting method, the steel wire rope is wound and mounted between the car diverting pulley and the bearing diverting pulley, the power assisting mechanism is used for enabling the car upper beam to generate elastic deflection deformation towards the bearing beam, the steel wire rope is tightened, then the power assisting mechanism is detached from the car upper beam to enable the car upper beam to recover to a original state, at the moment, the car upper beam which is recovered to the original state generates elongation relative to the elastic deflection deformation state, the part of the elongation of the car upper beam pulls the steel wire rope, accordingly the steel wire rope is pulled to eliminate the dropping amount, the steel wire rope is in a tightening state, and accordingly damage of the dropping amount of the steel wire rope is avoided.
In some embodiments, after the car upper beam is elastically deformed, the inner spacing between two adjacent sets of car diverting pulleys is greater than or equal to the outer spacing between two adjacent load-bearing diverting pulleys.
In some embodiments, the booster mechanism includes a first booster end, a second booster end, and a third booster end, a connecting line direction of the first booster end and the second booster end is parallel to an extending direction of the car upper beam, the third booster end is located between the first booster end and the second booster end, the extending direction of the third booster end is perpendicular to the connecting line direction of the first booster end and the second booster end, when the booster mechanism is mounted on the car upper beam, the first booster end, the second booster end, and the third booster end are all connected to the car upper beam, the first booster end and the second booster end are all contracted to apply force to the car upper beam close to each other, and the third booster end is elongated to push the car upper beam.
In some embodiments, when the booster mechanism is mounted on the car upper beam, the extension line of the third booster end passes through the midpoint of the connecting line of the two adjacent load-bearing diverting pulleys.
In some embodiments, the first and second assistance ends are symmetrically disposed with respect to the third assistance end.
In some embodiments, when the car upper beam is elastically deflected towards the load beam by the booster mechanism, the line distance between the end of the third booster end and the end of the first booster end remains unchanged and/or the line distance between the end of the third booster end and the end of the second booster end remains unchanged.
In some embodiments, the number of the car upper cross beams is multiple, the number of the bearing cross beams is multiple, the car upper cross beams and the bearing cross beams are in one-to-one correspondence, the elevator further comprises a traction motor, a bearing steering wheel group, a counterweight assembly and two opposite bearing longitudinal beams, each bearing cross beam is arranged between the two bearing longitudinal beams, the traction motor is arranged on one bearing longitudinal beam, and the bearing steering wheel group is arranged on the other bearing longitudinal beam; between two adjacent bearing crossbeams, the steel wire rope is lapped and passed through the upper side of the bearing steering wheel group to realize steering; wherein, lap around setting wire rope includes following steps: one end of a steel wire rope is fixed on the bearing longitudinal beam; the other end of the steel wire rope is sequentially lapped and wound to pass through the counterweight component and the traction motor; the other end of the steel wire rope pulled out of the traction motor is sequentially lapped and wound to pass through a car diverting pulley, a bearing diverting pulley and a bearing diverting pulley set; and fixing the two ends of the steel wire rope on the same bearing longitudinal beam.
In some embodiments, two sets of car diverting pulleys are disposed on each car upper beam, and two load-bearing diverting pulleys are disposed on each load-bearing beam at intervals.
In some embodiments, each set of car diverting pulleys includes two car diverting pulleys, with the two car diverting pulleys in the same set being spaced apart.
In some embodiments, the load-bearing steering wheel set comprises at least two load-bearing steering wheels, and the plurality of load-bearing steering wheels and the load-bearing cross beam are arranged in a one-to-one correspondence.
In some embodiments, the counterweight assembly includes at least two sets of counterweight diverting pulleys and a plurality of counterweight diverting pulleys mounted on a load bearing stringer where the traction motor is located, the other end of the wire rope is wrapped around the counterweight diverting pulleys and the plurality of counterweight diverting pulleys and then wrapped around the traction motor, so that the specific gravity between the total weight of the load of the car of the elevator and the weight of the counterweight assembly is 8:1.
drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required for the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort to a person skilled in the art.
Fig. 1 is a schematic view of a construction of a hoist elevator according to an embodiment of the present invention, in which the hoist elevator is not lapped with a wire rope;
fig. 2 is a schematic diagram of a second embodiment of the elevator of the present invention, in which the elevator is not lapped with a wire rope;
fig. 3 is a schematic view of a booster mechanism used in the winding of a wire rope for installing a hoist in accordance with an embodiment of the present invention;
fig. 4 is a schematic view showing a structure of a hoisting elevator according to an embodiment of the present invention, in which an assist mechanism is mounted to an upper beam of a car when a wire rope is wound around the hoisting elevator;
fig. 5 is a schematic view of a structure in which a booster mechanism applies force to an upper beam of a car when a wire rope is installed around a lifting elevator according to an embodiment of the present invention;
fig. 6 is a schematic structural view of a booster mechanism for applying force to an upper beam of a car and winding and tightening a wire rope when the wire rope is wound and installed in the elevator according to an embodiment of the present invention;
fig. 7 is a schematic view showing a completed construction of a hoist rope lap installation in which a booster mechanism has been detached from a car upper beam according to an embodiment of the present invention;
fig. 8 is a front view of a hoist elevator according to an embodiment of the present invention after completion of a wire rope wrap installation;
fig. 9 is a front view of a hoist elevator according to another embodiment of the present invention after completion of the rope wrap installation.
Wherein, each reference sign in the figure:
11. a load-bearing cross beam; 12. a bearing longitudinal beam; 13. a load-bearing diverting pulley; 14. a bearing steering wheel group;
1. a car; 2. a portal frame; 20. a car upper beam; 21. a car diverting pulley;
30. a wire rope;
40. a power assisting mechanism; 41. a first booster end; 42. a second booster end; 43. a third booster end;
50. a traction motor;
60. a rope end fixing seat;
70. a counterweight assembly; 71. counterweight diverting pulley; 72. and (5) a counterweight steering wheel.
Detailed Description
Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and intended for the purpose of illustrating the embodiments of the present application and are not to be construed as limiting the embodiments of the present application.
In the description of the embodiments of the present application, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the embodiments of the present application and simplify description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore should not be construed as limiting the embodiments of the present application.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the embodiments of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the embodiments of the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present application will be understood by those of ordinary skill in the art according to the specific circumstances.
Explanation:
1. the "upper", "lower", "bottom", "upper", "lower", "left", "right", "vertical" and other orientations referred to herein are orientations referred to on the basis of the elevator being in a standby state.
2. The total weight of the car 1 is the sum of the weight of the car 1 itself and the weight of the loaded articles when the loading weight of the car 1 reaches full load.
As shown in fig. 1, 2 and 8, in one embodiment, the elevator comprises a load bearing beam 11, a portal frame 2 and a car 1. The load bearing beam 11 is typically fixedly mounted on top of the hoistway of the building, the load bearing beam 11 being used to carry the overall weight of the car 1 during the elevator operation of the car 1. The portal frame 2 and the car 1 form an integral structure after being assembled, and the portal frame 2 is used for guaranteeing the strength of the car 1, so that the car 1 has a firm riding space. At least two load-bearing diverting pulleys 13 are mounted on the load-bearing beam 11. The portal frame 2 is generally rectangular, that is, the portal frame 2 is formed by connecting four side beams at the first position, and is respectively two vertical beams (namely, a left vertical beam, a right vertical beam), an upper beam and a bottom beam, and the upper beam of the portal frame 2 can be also called as a car upper beam 20. At least two sets of car diverting pulleys 21 are mounted on the car upper beam 20. Specifically, at least two load-bearing diverting pulleys 13 are installed at intervals on the load-bearing beam 11, at least two sets of car diverting pulleys 21 are installed on the car upper beam 20, and the part of the car upper beam 20 between two adjacent sets of car diverting pulleys 21 and the two load-bearing diverting pulleys 13 are arranged opposite to each other along the vertical direction.
As shown in fig. 1, 2 and 8, the elevator further includes a counterweight assembly 70, and the counterweight assembly 70 is used to balance the weight of the car 1 so that the car 1 is more stable during the lifting operation. Further, the elevator further comprises a traction motor 50 and two opposite bearing stringers 12, wherein the two bearing stringers 12 are respectively and fixedly connected to two ends of the bearing cross beam 11, the bearing cross beam 11 and the two bearing stringers 12 are assembled into a whole, the traction motor 50 is fixedly arranged on one of the bearing stringers 12, and the traction motor 50 provides power for lifting operation of the car 1.
The wire rope 30 is connected between the traction motor 50, the counterweight assembly 70, the car diverting pulley 21 and the bearing diverting pulley 13 in a lap-winding manner, and the traction motor 50 provides power to move the wire rope 30, so that the counterweight assembly 70 and the car 1 can move relatively in an ascending-descending manner, namely, the car 1 descends when the counterweight assembly 70 ascends, or the car 1 ascends when the counterweight assembly 70 descends.
In the present embodiment, in the process of winding the coupling wire rope 30 between the load-bearing diverting pulley 13 and the car diverting pulley 21, a specific installation method includes the steps of:
step S10: the wire rope 30 is wound around the car diverting pulley 21 and the load-bearing diverting pulley 13, and the wire rope 30 is wound around the lower side of the car diverting pulley 21 and around the upper side of the load-bearing diverting pulley 13. In this way, the car 1 can be lifted and lowered when the power supplied from the traction motor 50 acts on the wire rope 30.
Step S20: a booster mechanism 40 is mounted on the car upper beam 20 facing the two adjacent load-bearing diverting pulleys 13, and the car upper beam 20 is elastically deformed toward the load-bearing beam 11 by the booster mechanism 40. When the upper beam 20 of the car is deformed in a bending manner during the process of winding and installing the steel wire rope 30, the distance between two adjacent groups of car diverting pulleys 21 is reduced.
Step S30: the wire rope 30 is tightened. At this time, the wire rope 30 between the adjacent two load-bearing diverting pulleys 13 drops to some extent due to the influence of gravity of itself and due to the influence of span between the two load-bearing diverting pulleys 13.
This amount of sag of the wire rope 30 is detrimental: the primary influence is to influence the stability of the lifting movement of the car 1, when the traction motor 50 provides power for the steel wire rope 30 (namely, the car 1 is in the lifting movement process), the traction motor 50 needs to eliminate the falling amount of the steel wire rope 30, namely, the steel wire rope 30 needs to be in a tight state firstly, and then the steel wire rope 30 can pull the lifting car 1 to lift, so that the lifting movement of the car 1 is delayed; moreover, in the hysteresis process, the pulling force of the car upper beam 20 by the wire rope 30 is uneven in all positions, which will also affect the stability of the running of the car 1; secondly, this amount of drop of the wire rope 30 affects the accuracy of the weight measurement of the car 1, wherein the effect of a large tonnage freight elevator is more pronounced.
Step S40: the booster mechanism 40 is removed to restore the car upper beam 20 to the original state by eliminating elastic deflection deformation. When the booster mechanism 40 is detached, the car upper beam 20 is stretched, and the part of the stretching amount of the car upper beam 20 pulls the steel wire rope 30, so that the steel wire rope 30 is pulled to eliminate the falling amount, and the steel wire rope 30 is in a tight state, thereby avoiding the damage of the falling amount of the steel wire rope 30.
The execution sequence of step S10 and step S20 may be reversed. That is, the wire rope 30 may be wound around the load-bearing diverting sheave 13 and the car diverting sheave 21 in the order of "step s10→step s20→step s30→step s10", or the wire rope 30 may be wound around the wire rope 30 in the order of "step s20→step s10→step s30→step s10".
By using the installation method provided by the application, the steel wire rope 30 is wound and installed between the car diverting pulley 21 and the bearing diverting pulley 13, the power assisting mechanism 40 is adopted to enable the car upper beam 20 to generate elastic deflection deformation towards the bearing beam 11, the steel wire rope 30 is tightened, then the power assisting mechanism 40 is detached from the car upper beam 20 to enable the car upper beam 20 to recover to a restoring state, at the moment, the car upper beam 20 recovered to the original state generates elongation when corresponding to the elastic deflection deformation state, the elongation of the part of the car upper beam 20 pulls the steel wire rope 30, so that the steel wire rope 30 is pulled to eliminate the dropping amount, the steel wire rope 30 is in a tightening state, and the harm of the dropping amount of the steel wire rope 30 is avoided.
After the booster mechanism 40 is detached from the car upper beam 20, in order to provide a better pulling effect of the car upper beam 20 in the state of restoration on the wire rope 30, as shown in fig. 6, after the car upper beam 20 is elastically deformed, the inner pitch H between the adjacent two sets of car diverting pulleys 21 is equal to or greater than the outer pitch L1 (i.e., h≡l1) between the adjacent two load-bearing diverting pulleys 13. In the elevator of the present application, the car diverting pulley 21 is adjustably mounted on the car upper beam 20 and the load-bearing diverting pulley 13 is also adjustably mounted on the load-bearing beam 11. Therefore, the distance between the two adjacent bearing diverting pulleys 13 can be correspondingly adjusted according to actual demands, and the distance between the two adjacent elevator car diverting pulleys 21 can be correspondingly adjusted according to actual demands. Thus, the inner pitch H between the adjacent two sets of cage diverting pulleys 21 can be adjusted to be equal to or greater than the outer pitch L1 of the adjacent two load-bearing diverting pulleys 13.
In the elevator of the present embodiment, it is preferable that, after the car upper beam 20 is elastically deformed during the winding and mounting of the wire rope 30, the inner space H between the adjacent two sets of car diverting pulleys 21 is equal to the outer space L1 (i.e., h=l1) between the adjacent two load-bearing diverting pulleys 13. That is, after the car upper beam 20 is elastically deflected toward the load bearing beam 11 by the assist mechanism 40, the wire rope 30 is made to be in a plumb line direction from one set of car diverting pulleys 21 to be wound between one load bearing diverting pulley 13 and the wire rope 30 is made to be in a plumb line direction from the other load bearing diverting pulley 13 to be wound between the other set of car diverting pulleys 21 by the corresponding car diverting pulleys 21 and the corresponding load bearing diverting pulleys 13 (i.e., the wire rope 30 between the adjacent car diverting pulleys 21 and the load bearing diverting pulley 13 is in a vertical state). In this way, after the booster mechanism 40 is detached from the car upper beam 20, the wire rope 30 is pulled directly to the left and right sides by the amount of elongation generated by the restoration of the car upper beam 20 to the original state, so that the wire rope 30 is pulled and the amount of dropping is eliminated.
As shown in fig. 3 to 6, the assist mechanism 40 includes a first assist end 41, a second assist end 42, and a third assist end 43, the third assist end 43 being located between the first assist end 41 and the second assist end 42.
When the booster mechanism 40 is mounted and fixed to the car upper beam 20, as shown in fig. 4, the first booster end 41, the second booster end 42, and the third booster end 43 are all connected to the car upper beam 20, the line direction of the first booster end 41 and the second booster end 42 is parallel to the extending direction of the car upper beam 20 (when the booster mechanism 40 has not yet applied force operation to the car upper beam 20), and the extending direction of the third booster end 43 is perpendicular to the line direction of the first booster end 41 and the second booster end 42. When the booster mechanism 40 performs a force application operation to the car upper beam 20, as shown in fig. 5 and 6, the first booster end 41 and the second booster end 42 are both shortened to apply force to the car upper beam 20 close to each other, and the third booster end 43 is extended to push the car upper beam 20. In this way, the portion of the car upper beam 20 between the first assistance end 41 and the second assistance end 42 is elastically deformed toward the load-bearing beam 11.
In this embodiment, when the booster mechanism 40 is mounted on the car upper beam 20, the extension line of the third booster end 43 passes through the midpoint of the connection line between the adjacent two load-bearing sheaves 13. Further, the first assistance end 41 and the second assistance end 42 are symmetrically arranged with respect to the third assistance end 43. In this way, the first assistance end 41 and the second assistance end 42 exert a symmetrical force on the car upper beam 20 relative to the axis of the third assistance end 43, so that the complexity of the acting stress suffered by the car upper beam 20 when the car upper beam 20 generates elastic flexural deformation is simplified, the monitoring of the actual stress state of the car upper beam 20 by a worker is facilitated, and the situation that the car upper beam 20 generates unrecoverable plastic deformation due to the acting stress is avoided.
When the car upper beam 20 is elastically deformed toward the load beam 11 by the assist mechanism 40: the line distance between the end of the third assistance end 43 and the end of the first assistance end 41 remains unchanged; alternatively, the distance of the line between the end of the third assistance end 43 and the end of the second assistance end 42 remains unchanged; alternatively, the line distance between the end of the third assistance end 43 and the end of the first assistance end 41 remains unchanged, and the line distance between the end of the third assistance end 43 and the end of the second assistance end 42 remains unchanged. In the present embodiment, since the first assistance end 41 and the second assistance end 42 are symmetrically disposed with respect to the third assistance end 43, the line distance between the end of the third assistance end 43 and the end of the first assistance end 41 remains unchanged and the line distance between the end of the third assistance end 43 and the end of the second assistance end 42 remains unchanged during the urging operation of the car upper cross member 20 by the urging mechanism 40. That is, as shown in fig. 3, the right triangle AOB is a triangle line when the booster mechanism 40 has not yet applied force to the car upper beam 20, and is referred to in combination in the non-applied force state of fig. 4. As shown in fig. 5 and 6, after the energizing mechanism 40 applies the energizing operation to the car upper beam 20, the first energizing end 41 and the second energizing end 42 are brought close to each other, and the third energizing end 43 is elongated upward, that is, the OA side length is elongated and the OB side length is shortened in the right triangle AOB. For the distance of the line between the end of the third booster end 43 and the end of the second booster end 42 (i.e. the AB side length of the right triangle), AB according to the pythagorean theorem 2 =OA 2 +OB 2 The extension of the OA side length and the shortening of the OB side length are determined by the calculation adjustment so as to keep the AB side length unchanged (i.e., the distance between the end of the third assistance end 43 and the end of the second assistance end 42 remains unchanged), that is, the third assistance end 43 and the second assistance end 42The portion of the car upper cross member 20 corresponding therebetween is substantially free from elastic tension. Similarly, the distance between the end of the third assistance end 43 and the end of the first assistance end 41 remains unchanged, that is, the portion of the car upper cross member 20 corresponding between the third assistance end 43 and the first assistance end 41 is also substantially free from elastic tension.
In practice, before the steel wire rope 30 is installed by winding by the installation method provided by the application, corresponding theoretical calculation and experimental verification must be performed, so as to determine the practical effectiveness of the installation method.
As shown in fig. 6, when the outer space between two adjacent load-bearing diverting pulleys 13 is L1 and the radius of each load-bearing diverting pulley 13 is r, the amount of dropping of the wire rope 30 between the two adjacent load-bearing diverting pulleys 13 is:
therefore, taking the single side of the steel wire rope 30 corresponding to the third booster end 43 and the second booster end 42 as an example, the length difference between the state of tightening and dropping and the normal tightening state of the single side of the steel wire rope 30 is:
The deformation of the third booster end 43 to jack up the car upper beam 20 is:
and, in order to offset the lifting of the third assistance end 43 in the vertical direction, the horizontal pulling force of the second assistance end 42 is:
where P is the vertical pressure, E is the modulus constant of the car upper beam 20, I is the moment of inertia constant of the car upper beam 20, and E, I is determined after the type of the profile of the car upper beam 20 is determined (the car upper beam 20 is generally a channel profile).
To simplify the calculation, it is approximately considered that the length variation of the car upper beam 20 in the horizontal direction is equal to the length variation of the wire rope 30 between the two load-bearing diverting pulleys 13, and thus the relationship between the vertical direction pressure and L1, L2 is:
in this way, the distance or the applied force that the first assistance end 41, the second assistance end 42 and the third assistance end 43 are respectively extended and contracted can be determined, thereby accurately completing the installation process.
In this embodiment, the number of the car upper beams 20 is plural, the number of the load bearing beams 11 is plural, and the car upper beams 20 and the load bearing beams 11 are in one-to-one correspondence. Further, in order to further strengthen the structural strength of the car 1, therefore, the number of the arrangement of the gantry 2, that is, the number of the car upper beams 20 is greater than the number of the load bearing beams 11, may be increased.
When the elevator is provided with a plurality of load bearing beams 11, the elevator also comprises load bearing diverting pulley sets 14, as shown in fig. 1, 2, 6-8. The load-bearing steering wheel set 14 is mounted on another load-bearing stringer 12 which is not used for mounting the traction motor 50. Between two adjacent load-bearing beams 11, a wire rope 30 is looped over the upper side of the load-bearing steering wheel set 14 to effect steering. As shown in fig. 1 and 2, the load-bearing steering wheel set 14 includes at least one load-bearing steering wheel, and the load-bearing steering wheels are disposed in one-to-one correspondence with the load-bearing cross beam 11. The winding path for winding the installation wire rope 30 is facilitated by the load-bearing steering wheel. In the embodiment of the present application, the number of the load-bearing steering wheels is two, and correspondingly, the number of the load-bearing cross beams 11 is also two.
As shown in fig. 1, 2, and 6 to 8, the winding and setting of the wire rope 30 includes the steps of:
A. one end of the wire rope 30 is fixed to the load-bearing side member 12 for mounting the traction motor 50;
B. the other end of the wire rope 30 is sequentially lapped and passed through the counterweight assembly 70 and the traction motor 50;
C. the other end of the wire rope 30 pulled out from the traction motor 50 is wound and passed between the car diverting pulley 21, the bearing diverting pulley 13 and the bearing diverting pulley set 14;
D. both ends of the wire rope 30 are fixed to the same load bearing stringer 12. Specifically, as shown in fig. 1, both ends of the wire rope 30 are fixed to rope end fixing seats 60 of the load-bearing side member 12.
After the steel wire rope 30 is wound and installed according to the sequence of the steps A, B, C, D, the traction motor 50 provides power to traction the steel wire rope 30 to move, so that the counterweight assembly 70 and the car 1 perform one-step relative movement, namely, the car 1 descends when the counterweight assembly 70 ascends, or the car 1 ascends when the counterweight assembly 70 descends.
As shown in fig. 1 to 8, two sets of car diverting pulleys 21 are provided on each car upper beam 20, and two load-bearing diverting pulleys 13 are provided on each load-bearing beam 11. Further, as shown in fig. 1 to 8, each set of the car diverting pulleys 21 includes two car diverting pulleys 21, and the two car diverting pulleys 21 in the same set are disposed at intervals. In practice, the number of sets of the car diverting pulleys 21 provided on each car upper beam 20 and the number (number) of the load-bearing diverting pulleys 13 provided on each load-bearing beam 11 are determined by the actual width of the car 1, that is, the wider the actual width of the car 1, the greater the number of sets of the car diverting pulleys 21 provided on each car upper beam 20 and the number (number) of the load-bearing diverting pulleys 13 provided on each load-bearing beam 11.
Further, as shown in fig. 2, the counterweight assembly 70 includes at least two sets of counterweight diverting pulleys 71 and a plurality of counterweight diverting pulleys 72, the counterweight diverting pulleys 71 being rotatably mounted on the mounting frame of the counterweight assembly 70, the plurality of counterweight diverting pulleys 72 being rotatably mounted on the load bearing stringers 12 on which the traction motor 50 is located. After the wire rope 30 is passed between the car diverting pulley 21, the load-bearing diverting pulley assembly 14 and the load-bearing diverting pulley 13, the wire rope 30 is then passed over the counterweight diverting pulley 71 and the plurality of counterweight diverting pulleys 72 (in practice, the counterweight diverting pulleys 72 are used for roping between two adjacent sets of counterweight diverting pulleys 71). In fact, in the embodiment of the present application, the steel wire rope 30 sequentially passes through four sets of car diverting pulleys 21, two bearing diverting pulleys, four bearing diverting pulleys 13, at least two sets of counterweight diverting pulleys 71 and a plurality of counterweight diverting pulleys 72, so that the specific gravity between the total weight of the load of the car 1 and the weight of the counterweight assembly 70 of the elevator provided in the embodiment of the present application reaches 8:1, that is, the elevator provided in the embodiment of the present application can use the traction motor 50 with smaller power and the counterweight assembly 70 with smaller mass to drive the total weight of the load with larger specific gravity.
In another embodiment, as shown in fig. 9, two sets of car diverting pulleys 21 are provided on each car upper beam 20, and the number of car diverting pulleys 21 of each set is one. That is, the width of the car 1 is smaller than that of the car 1 in the previous embodiment, and the other structures are the same, which is not described here.
The foregoing description of the preferred embodiments is provided for the purpose of illustration only, and is not intended to limit the invention to the particular embodiments disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the embodiments.
Claims (11)
1. The method for installing the steel wire rope of the elevator comprises a bearing beam, at least two bearing diverting pulleys, an upper car beam and at least two groups of elevator car diverting pulleys, wherein the at least two bearing diverting pulleys are arranged on the bearing beam at intervals, the at least two groups of elevator car diverting pulleys are arranged on the upper car beam, and the positions between two adjacent groups of elevator car diverting pulleys and the two bearing diverting pulleys are arranged opposite to each other along the vertical direction;
the method is characterized in that the method for installing the steel wire rope of the elevator comprises the following steps:
winding a steel wire rope around the car diverting pulley and the bearing diverting pulley, wherein the steel wire rope is wound around the lower side of the car diverting pulley and the upper side of the bearing diverting pulley;
a booster mechanism is arranged on the upper cross beam of the lift car, which is opposite to the two adjacent bearing diverting pulleys, and the upper cross beam of the lift car is elastically deflected and deformed towards the bearing cross beam through the booster mechanism;
tightening the steel wire rope;
and disassembling the power assisting mechanism to enable the upper cross beam of the car to eliminate elastic deflection deformation.
2. The method of installing a steel wire rope of a hoisting elevator according to claim 1, characterized in that:
after the car upper cross beam is elastically deformed, the inner side distance between two adjacent groups of car diverting pulleys is larger than or equal to the outer side distance between two adjacent bearing diverting pulleys.
3. The method of installing a steel wire rope of a hoisting elevator according to claim 2, characterized in that:
the power assisting mechanism comprises a first power assisting end, a second power assisting end and a third power assisting end, the connecting line direction of the first power assisting end and the second power assisting end is parallel to the extending direction of the car upper beam, the third power assisting end is located between the first power assisting end and the second power assisting end, the extending direction of the third power assisting end is perpendicular to the connecting line direction of the first power assisting end and the second power assisting end, when the power assisting mechanism is installed on the car upper beam, the first power assisting end, the second power assisting end and the third power assisting end are connected to the car upper beam, the first power assisting end and the second power assisting end shrink to apply force to the car upper beam in a mutually approaching mode, and the third power assisting end stretches to push the car upper beam.
4. A method of installing a steel wire rope for an elevator according to claim 3, characterized in that:
when the power assisting mechanism is installed on the upper cross beam of the car, the extension line of the third power assisting end passes through the midpoint of the connecting line of the two adjacent bearing diverting pulleys.
5. The method of installing a steel wire rope for an elevator according to claim 4, characterized in that:
the first power assisting end and the second power assisting end are symmetrically arranged relative to the third power assisting end.
6. The method of installing a steel wire rope for an elevator according to claim 5, characterized in that:
when the car upper beam is elastically deflected and deformed towards the bearing beam through the power assisting mechanism, the connecting line distance between the end part of the third power assisting end and the end part of the first power assisting end is kept unchanged, and/or the connecting line distance between the end part of the third power assisting end and the end part of the second power assisting end is kept unchanged.
7. Method for installing the steel wire rope of an elevator according to any one of claims 1-6, characterized in that:
the elevator comprises a car, a plurality of load bearing beams, a traction motor, a load bearing steering wheel group, a counterweight assembly and two opposite load bearing longitudinal beams, wherein the number of the car upper beams is multiple, the car upper beams are in one-to-one correspondence with the load bearing beams, each load bearing beam is arranged between the two load bearing longitudinal beams, the traction motor is arranged on one load bearing longitudinal beam, and the load bearing steering wheel group is arranged on the other load bearing longitudinal beam;
between two adjacent bearing cross beams, the steel wire rope is lapped and passed over the upper sides of the bearing steering wheel groups to realize steering;
wherein, lap around setting wire rope includes following steps:
one end of the steel wire rope is fixed on the bearing longitudinal beam for installing the traction motor;
the other end of the steel wire rope is sequentially lapped and passed through the counterweight component and the traction motor;
the other end of the steel wire rope pulled out of the traction motor is sequentially lapped and passed through the car diverting pulley, the bearing diverting pulley and the bearing diverting pulley set;
and fixing the two ends of the steel wire rope on the same bearing longitudinal beam.
8. The method of installing a steel wire rope for an elevator according to claim 7, characterized in that:
two groups of car diverting pulleys are arranged on each car upper beam, and two bearing diverting pulleys are arranged on each bearing beam at intervals.
9. The method of installing a steel wire rope for an elevator according to claim 8, characterized in that:
each group of the car diverting pulleys comprises two car diverting pulleys, and the two car diverting pulleys in the same group are arranged at intervals.
10. The method of installing a steel wire rope for an elevator according to claim 9, characterized in that:
the bearing steering wheel group comprises at least two bearing steering wheels, and the bearing steering wheels and the bearing cross beams are arranged in one-to-one correspondence.
11. The method of installing a steel wire rope for an elevator according to claim 10, characterized in that:
the counterweight assembly comprises at least two groups of counterweight diverting pulleys and a plurality of counterweight diverting pulleys, the plurality of counterweight diverting pulleys are arranged on the bearing longitudinal beam where the traction motor is located, the other end of the steel wire rope is lapped and wound by the counterweight diverting pulleys and then lapped and wound by the traction motor, so that the specific gravity between the total weight of the elevator car and the weight of the counterweight assembly is 8:1.
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| CN202310372029.1A CN116101872B (en) | 2023-04-10 | 2023-04-10 | Method for installing steel wire rope of elevator |
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| CN202310372029.1A CN116101872B (en) | 2023-04-10 | 2023-04-10 | Method for installing steel wire rope of elevator |
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| Publication number | Publication date |
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| CN116101872A (en) | 2023-05-12 |
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