CN215618908U - Opening and closing device of curing kiln door and concrete prefabricated part production system - Google Patents

Abstract

The utility model provides an opening and closing device of a curing kiln door and a concrete prefabricated part production system, wherein the opening and closing device of the curing kiln door comprises: a mounting frame; the stopping part is fixedly arranged on the mounting frame; the transmission rod is movably arranged on the mounting rack along the vertical direction and extends downwards; the door opening structure is rotatably arranged on the transmission rod, a matching part and a pushing part are arranged on the door opening structure, the matching part is suitable for being matched with the stopping part, the pushing part is suitable for being matched with the kiln door support, and the door opening structure is provided with a door opening position enabling the pushing part to be aligned with the kiln door support and an avoiding position enabling the pushing part to be staggered with the kiln door support. The technical scheme of the utility model solves the defects that the kiln door opening device of the curing kiln in the prior art is low in reliability and easy to damage the kiln door.

Description

Opening and closing device of curing kiln door and concrete prefabricated part production system

Technical Field

The utility model relates to the technical field of precast concrete unit production equipment, in particular to an opening and closing device of a kiln door of a curing kiln and a precast concrete unit production system.

Background

The prefabricated concrete member (also called PC prefabricated member) refers to an assembled concrete member which is manufactured before installation in a construction site. It is common to use precast concrete floor slab, concrete box girder for bridge, precast concrete roof beam for industrial factory building, culvert frame structure, precast concrete pile for foundation treatment, etc. Compared with cast-in-place concrete, the concrete prefabricated part has the advantages of high production safety factor, easy control of production quality, acceleration of construction project progress and the like.

The curing kiln is a device commonly used in concrete prefabricated part production equipment, and a lifter (or called a stacker) is arranged outside the curing kiln. Furthermore, a kiln door opening device is arranged on a lifting platform of the lifting machine, when the lifting platform runs to a certain layer of station of the curing kiln, a bolt of the kiln door opening device extends out and is matched with the kiln door, and then the kiln door opening device rises and opens the kiln door, so that the circulation of the mold table is realized. However, in the prior art, the extension of the bolt is controlled by the electric push rod, and in the actual use process, the electric push rod is easy to have faults of clamping stagnation, failure and the like, so that the bolt and the kiln door are not matched in place, and the kiln door is damaged.

SUMMERY OF THE UTILITY MODEL

Therefore, the technical problem to be solved by the utility model is to overcome the defects that the kiln door opening device of the curing kiln in the prior art is low in reliability and easy to damage the kiln door, so that the opening and closing device of the kiln door of the curing kiln and the precast concrete component production system are provided.

In order to solve the above problems, the present invention provides an opening and closing device for a door of a curing kiln, comprising: a mounting frame; the stopping part is fixedly arranged on the mounting frame; the transmission rod is movably arranged on the mounting rack along the vertical direction and extends downwards; the door opening structure is rotatably arranged on the transmission rod, a matching part and a pushing top part are arranged on the door opening structure, the matching part is suitable for being matched with the stopping part, the pushing top part is suitable for being matched with the kiln door support, and the door opening structure is provided with a door opening position enabling the pushing top part to be aligned with the kiln door support and an avoiding position enabling the pushing top part to be staggered with the kiln door support; when the door opening structure moves downwards, the stopping portion is in butt fit with the matching portion and applies upward ejection force, so that the door opening structure swings to the avoiding position, and when the door opening structure moves upwards, the door opening structure swings back to the door opening position under the action of self gravity or external force.

Optionally, the door opening structure includes a swing arm, a first end of the swing arm is hinged to the bottom of the transmission rod, the pushing portion is arranged at a second end of the swing arm, the matching portion is arranged at a side portion of the swing arm, and a preset angle is formed between the matching portion and the swing arm.

Optionally, the engaging portion is a cantilever, a first end of the cantilever is connected to a side portion of the swing arm, and a second end of the cantilever extends toward an outer side of the swing arm.

Optionally, the pushing top is a bayonet lock, and the bayonet lock is perpendicular to the swing arm.

Optionally, the stopping portion includes a connecting rod and a blocking post, the first end of the connecting rod is fixedly connected to the mounting frame, the second end of the connecting rod extends downward, the blocking post is disposed at the second end of the connecting rod and extends toward the horizontal direction, the blocking post is disposed perpendicular to the connecting rod, and the blocking post is disposed below the matching portion.

Optionally, the opening and closing device further comprises a first driving mechanism disposed between the mounting frame and the transmission rod and adapted to drive the transmission rod to move in the vertical direction.

Optionally, a rack is arranged on the transmission rod, the first driving mechanism is a motor, a gear is arranged on a motor shaft of the motor, and the gear is meshed with the rack to drive the transmission rod to move in the vertical direction.

Optionally, the opening and closing device further comprises a position detection structure adapted to detect a swing position of the door opening structure.

The present invention also provides a lifting device comprising: a frame; the lifting platform is movably arranged on the frame along the vertical direction; the opening and closing device of the curing kiln door is arranged on the lifting platform and is the opening and closing device of the curing kiln door.

The utility model also provides a concrete prefabricated part production system which comprises a curing kiln and the lifting device arranged outside the curing kiln, wherein the lifting device is the lifting device.

The utility model has the following advantages:

by utilizing the technical scheme of the utility model, when the kiln door needs to be opened, the transmission rod moves upwards, the stopping part does not apply upward ejection force to the matching part, the door opening structure swings to the door opening position under the action of self gravity or external force, and the ejection part is aligned with the kiln door support. At the moment, the movable transmission rod continues to rise, and the pushing top pushes the kiln door support upwards, so that the kiln door is pushed upwards and opened. When the kiln door needs to be closed, the transmission rod moves downwards, and after the kiln door is closed, the stopping part is abutted and matched with the matching part, and upward ejection force is applied to the matching part. The door opening structure swings to an avoiding position under the action of the ejection force, the ejection part and the kiln door support are staggered, and the elevator can ascend or descend to be transferred to other stations. The alignment and dislocation of the pushing top and the kiln door support are realized through mechanical structure matching and transmission in the structure, and other electric control driving mechanisms are not introduced, so that potential fault points are reduced, and the kiln door is more stable to open and close. Therefore, the technical scheme of the utility model overcomes the defects that the kiln door opening device of the curing kiln in the prior art is low in reliability and easy to damage the kiln door.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic view (rear side view) showing the opening and closing device of the curing kiln door of the present invention;

FIG. 2 shows an enlarged schematic view at A in FIG. 1;

fig. 3 shows a schematic view (front view) of the door opening arrangement of the opening and closing device of fig. 1 in the retracted position; and

fig. 4 shows a schematic view (front side view) of the door opening structure of the opening and closing apparatus of fig. 1 in the door opening position.

Description of reference numerals:

10. a mounting frame; 20. a stopper portion; 21. a connecting rod; 22. a bumping post; 30. a transmission rod; 31. a rack; 40. a door opening structure; 41. a fitting portion; 42. pushing the top; 43. swinging arms; 50. a first drive mechanism; 100. and (4) a kiln door support.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

As shown in fig. 1 to 4, the opening and closing device for a curing kiln door of the present embodiment includes a mounting frame 10, a stopper 20, a transmission rod 30, a door opening structure 40, and a first driving mechanism 50. Wherein the blocking portion 20 is fixedly arranged on the mounting frame 10. The transmission rod 30 is movably disposed on the mounting bracket 10 in a vertical direction and extends downward. The door opening structure 40 is swingably provided on the transmission lever 30, and the door opening structure 40 is provided with an engaging portion 41 and a push top portion 42. The mating portion 41 is adapted to mate with the stop portion 20 and the push top portion 42 is adapted to mate with the kiln door support 100. The door opening structure 40 has an open door position where the push top portion 42 is aligned with the kiln door support 100, and an escape position where the push top portion 42 is misaligned with the kiln door support 100. The first driving mechanism 50 is disposed between the mounting bracket 10 and the driving rod 30 and adapted to drive the driving rod 30 to move in the vertical direction. When the door opening structure 40 moves downward and passes through the stopping portion 20, the stopping portion 20 abuts against and engages with the engaging portion 41 and applies an upward pushing force, so that the door opening structure 40 swings to the retracted position. When the door opening structure 40 moves upward, the door opening structure 40 swings back to the door opening position under its own weight or external force.

With the solution of this embodiment, when the kiln door needs to be opened, the first driving mechanism 50 drives the transmission rod 30 to move upward, the stopping portion 20 does not apply an upward pushing force to the engaging portion 41, and the door opening structure 40 swings to the door opening position under its own gravity or external force, and aligns the pushing portion 42 with the kiln door support 100. At this time, the first driving mechanism 50 drives the transmission rod 30 to continuously ascend, and the pushing top pushes the kiln door support 100 upwards, so that the kiln door is subjected to an upward pushing force and is opened. When the kiln door needs to be closed, the first driving mechanism 50 drives the transmission rod 30 to move downwards, and after the kiln door is closed, the stopping part 20 is abutted and matched with the matching part 41, and an upward ejecting force is applied to the matching part 41. The door opening structure 40 swings to an avoiding position under the action of the pushing force, at the moment, the pushing part 42 and the kiln door support 100 are staggered, and the elevator can ascend or descend to be transferred to other stations. In the structure, the alignment and dislocation of the ejection part 42 and the kiln door support 100 are realized through the matching of mechanical structures and transmission, and other electric control driving mechanisms are not introduced, so that the potential fault points are reduced, and the kiln door is more stable to open and close. Therefore, the technical scheme of the embodiment overcomes the defects that the kiln door opening device of the curing kiln in the prior art is low in reliability and easily damages the kiln door.

As shown in fig. 3 and 4, it should be noted that the above-mentioned "aligning the top pushing part 42 with the kiln door support 100" means that the top pushing part 42 is aligned with the kiln door support 100 in the vertical direction. Accordingly, the above-mentioned "the pushing top part 42 is offset from the kiln door support 100" means that the pushing top part 42 is offset from the kiln door support 100 in the vertical direction.

It should be noted that, as can be seen from fig. 3 and 4, the blocking portion 20 and the swing end of the door opening structure 40 are horizontally disposed in a staggered manner, so that when the door opening structure 40 moves downward relative to the blocking portion 20, the engaging portion 41 first engages with the blocking portion 20, and when the door opening structure 40 continues to move downward, the blocking portion 20 applies an upward pushing force to the engaging portion 41, that is, applies a torque around the swing end to the door opening structure 40, so that the door opening structure 40 can swing outward. When the door opening structure 40 swings to the outside, the ejector part 42 synchronously swings to the outside, and the ejector part 42 is misaligned with the kiln door support 100. In the state of fig. 3, the elevator can move freely up and down without interfering with the kiln door support 100 of the curing kiln.

As shown in fig. 3 and 4, it should be noted that, during the process of raising the door opening structure 40 from the position shown in fig. 3 to the position shown in fig. 4, although the engaging portion 41 still overlaps with the blocking portion 20 in the initial stage, the blocking portion 20 does not apply an upward pushing force to the engaging portion 41 because the door opening structure 40 moves upward relative to the blocking portion 20. Therefore, in the present embodiment, the door opening structure 40 swings back from the retracted position to the door opening position under the influence of its own weight during the ascending process. Of course, the above-mentioned swinging back process can also be realized by external force, for example, an elastic member such as a torsion spring is disposed between the transmission rod 30 and the door opening structure 40. After the door-opening structure 40 swings back to the door-opening position, the pushing top portion 42 is located below the kiln door support 100, so that the door-opening structure 40 is in abutting contact with the kiln door support 100 when continuing to move upwards, and finally the kiln door is opened.

As shown in fig. 3 and 4, in the solution of the present embodiment, the door opening structure 40 includes a swing arm 43, a first end of the swing arm 43 is hinged at the bottom of the transmission rod 30, and a top pushing part 42 is disposed at a second end of the swing arm 43. The fitting part 41 is provided at a side of the swing arm 43, and the fitting part 41 and the swing arm 43 have a preset angle therebetween. Specifically, the stopping portion 20 is horizontally offset from the first end of the swing arm 43, so that when the swing arm 43 moves downward, the stopping portion 20 can push the engaging portion 41 upward, and the swing arm 43 swings outward. Because the pushing top part 42 is arranged at the second end of the swing arm 43, the swing arm 43 drives the pushing top part 42 to swing outwards when swinging outwards, so that the pushing top part 42 is staggered with the kiln door support 100.

As shown in fig. 3 and 4, in the solution of the present embodiment, the engaging portion 41 is a cantilever, a first end of the cantilever is connected to a side portion of the swing arm 43, and a second end of the cantilever extends toward an outer side of the swing arm 43. Preferably, the cantilever and the swing arm 43 are at an angle of approximately 45 ° in this embodiment.

As shown in fig. 3 and 4, the pushing top part 42 is a bayonet lock, and the bayonet lock is arranged perpendicular to the swing arm 43. Specifically, the latch is of a cylindrical structure, and is arranged on one side of the swing arm 43 facing the kiln door, and extends towards the direction of the kiln door.

As shown in fig. 1, 3 and 4, in the solution of the present embodiment, the blocking portion 20 comprises a connecting rod 21 and a blocking pillar 22. The first end fixed connection of connecting rod 21 is on mounting bracket 10, and the second end of connecting rod 21 extends downwards, and bumping post 22 sets up at the second end of connecting rod 21 and extends towards the horizontal direction. In particular, the connecting rod 21 is arranged parallel to the transmission rod 30 and the stop post 22 is fixedly arranged with respect to the mounting frame 10. The abutment 22 is of cylindrical configuration and is located below the cantilever, i.e. the abutment 22 engages the lower surface of the cantilever.

As shown in fig. 1, 3 and 4, in the solution of the present embodiment, a rack 31 is provided on the transmission rod 30, and the first driving mechanism 50 is a motor. A motor shaft of the motor is provided with a gear which is meshed with the rack 31. Specifically, when the motor rotates forward or backward, the driving rod 30 is driven by the gear and the rack 31 to move upward or downward, and further the door opening structure 40 is driven to move upward or downward relative to the stopping portion 20. Preferably, the motor may be selected to be a servo motor.

Of course, the transmission rod 30 can be driven by other linear driving structures, for example, the first driving mechanism 50 can also be a screw rod, an oil cylinder, an electric push rod, etc.

Preferably, the opening and closing device of the present embodiment further includes a position detection structure adapted to detect a swing position of the door opening structure 40. Specifically, the position detection structure may determine whether the door opening structure 40 is located at a door opening position or an avoidance position (i.e., whether the door opening structure 40 swings in place), so as to control the operation of the first driving mechanism 50 and the elevator, thereby preventing the kiln door from being opened, and preventing the elevator from interfering with the kiln door when the elevator ascends and descends. The position detection structure can be an angle sensor, a position sensor, a travel switch and other mechanisms.

According to the above description, the operation of the opening and closing device of the present embodiment is:

1. the motor drives the gear to drive the rack to lift up and down, a cantilever of the door opening structure is separated from the retaining column in the lifting process of the rack, the door opening structure is in a vertical position under the action of gravity, and the bayonet lock is positioned below the kiln door support;

2. the rack continuously rises, and at the moment, the kiln door support is hooked by the bayonet lock to drive the kiln door to move upwards, so that the kiln door is opened;

3. when the kiln door needs to be put down, the rack rapidly descends, when the kiln door descends in place and the rack continuously descends, the cantilever of the door opening structure contacts the stop column, the door opening structure rotates to the avoiding position at the moment, the clamping pin deviates from the kiln door support, and the elevator can ascend or descend.

The embodiment also provides a lifting device which comprises a frame, a lifting platform and an opening and closing device for the kiln door of the curing kiln. Wherein the lifting platform is movably arranged on the frame in the vertical direction. The opening and closing device of the curing kiln door is arranged on the lifting platform, and the opening and closing device of the curing kiln door is the opening and closing device of the curing kiln door.

This example still provides a precast concrete component production system, including maintenance kiln and the hoisting device of setting in the maintenance kiln outside, hoisting device is foretell hoisting device.

According to the description, the door opening structure has the advantages that the alignment and dislocation of the bayonet lock and the kiln door support can be realized without the power of an external electric control mechanism, the structure is reliable in operation, the structure is compact, and the cost is low.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the utility model.

Claims (10)

1. An opening and closing device for a curing kiln door, comprising:

a mounting frame (10);

a stopper (20) fixedly arranged on the mounting frame (10);

the transmission rod (30) is movably arranged on the mounting frame (10) along the vertical direction and extends downwards;

the door opening structure (40) is rotatably arranged on the transmission rod (30), a matching part (41) and a push top part (42) are arranged on the door opening structure (40), the matching part (41) is suitable for being matched with the stopping part (20), the push top part (42) is suitable for being matched with the kiln door support (100), the door opening structure (40) is provided with a door opening position enabling the push top part (42) to be aligned with the kiln door support (100) and an avoiding position enabling the push top part (42) to be staggered with the kiln door support (100);

when the door opening structure (40) moves downwards, the stopping portion (20) is in butt fit with the matching portion (41) and exerts upward ejection force, so that the door opening structure (40) swings to the avoiding position, and when the door opening structure (40) moves upwards, the door opening structure (40) swings back to the door opening position under the action of self gravity or external force.

2. The opening and closing device according to claim 1, wherein the door opening structure (40) comprises a swing arm (43), a first end of the swing arm (43) is hinged at the bottom of the transmission rod (30), the ejector part (42) is arranged at a second end of the swing arm (43), the engagement part (41) is arranged at a side of the swing arm (43), and a preset angle is formed between the engagement part (41) and the swing arm (43).

3. Opening and closing device according to claim 2, characterized in that the engaging part (41) is a cantilever, the first end of which is connected to the side of the swing arm (43) and the second end of which extends towards the outside of the swing arm (43).

4. Opening and closing device according to claim 2, characterized in that the ejector part (42) is a bayonet lock arranged perpendicular to the swing arm (43).

5. The opening and closing device according to claim 1, wherein the stopper (20) comprises a connecting rod (21) and a stop pillar (22), a first end of the connecting rod (21) is fixedly connected to the mounting frame (10), a second end of the connecting rod (21) extends downward, the stop pillar (22) is disposed at a second end of the connecting rod (21) and extends toward a horizontal direction, and the stop pillar (22) is disposed perpendicular to the connecting rod (21), and the stop pillar (22) is located below the fitting portion (41).

6. Opening and closing device according to claim 5, further comprising a first drive mechanism (50), said first drive mechanism (50) being arranged between said mounting frame (10) and said transmission rod (30) and being adapted to drive the transmission rod (30) in a vertical direction.

7. Opening and closing device according to claim 6, characterized in that a rack (31) is arranged on the transmission rod (30), the first driving mechanism (50) is a motor, a gear is arranged on a motor shaft of the motor, and the gear is engaged with the rack (31) to drive the transmission rod (30) to move along the vertical direction.

8. Opening and closing device according to claim 1, characterized in that it further comprises a position detection structure adapted to detect the swinging position of the door opening structure (40).

9. A lifting device, comprising:

a frame;

a lifting platform movably arranged on the frame along the vertical direction;

the opening and closing device of the curing kiln door is arranged on the lifting platform, and the opening and closing device of the curing kiln door is the opening and closing device of the curing kiln door as claimed in any one of claims 1 to 8.

10. A concrete precast element producing system comprising a curing kiln and a lifting device provided outside the curing kiln, the lifting device being the lifting device according to claim 9.

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