CN214888535U - Symmetrical spring device with adjustable tension - Google Patents
Symmetrical spring device with adjustable tension Download PDFInfo
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- CN214888535U CN214888535U CN202023102095.8U CN202023102095U CN214888535U CN 214888535 U CN214888535 U CN 214888535U CN 202023102095 U CN202023102095 U CN 202023102095U CN 214888535 U CN214888535 U CN 214888535U
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Abstract
The utility model provides a pulling force adjustable symmetry formula spring assembly, belongs to mechanical technical field, concretely relates to elastic device. The device comprises a support, a first connecting rod, a second connecting rod and a spring, wherein the first connecting rod is respectively arranged at two ends of the support, the first connecting rod is connected with the second connecting rod through the connecting rod, so that the axial leads of the first connecting rod and the second connecting rod are parallel to each other, a parallelogram structure is formed by the first connecting rod and the second connecting rod, the spring is respectively arranged at two ends of the second connecting rod, and the other end of the spring is rotatably connected to a rotating arm. The utility model provides a pulling force adjustable symmetry formula spring assembly, the beneficial effect who has is: the structure is characterized in that the springs with circular rings at two ends are symmetrically connected to two sides of a support fixedly arranged at the bottom of the middle beam through a first connecting rod, a second connecting rod, a connecting rod and a shackle, the support provides acting points for the springs, and the first connecting rod, the second connecting rod and the springs form a stress structure symmetrical along the central line of the support, so that horizontal component forces of the tensile force of the springs are mutually offset on the support, the transverse load on the support is reduced, and the safety and reliability are improved.
Description
Technical Field
The utility model provides a pulling force adjustable symmetry formula spring assembly, belongs to mechanical technical field, concretely relates to elastic device.
Background
In order to facilitate the opening of a large door, 2 groups of large springs are required to be arranged at the end part of a box car and at two sides of an underframe in a door opening and closing mechanism of a full-side-opening movable side wall box car, so that a tensile force pointing to the inner side of a vehicle is provided for a rotating arm of a door opening and closing device to reduce the opening and closing load of the door, and the heavier the door is, the larger the tensile force required to be provided by the spring is. When the rotating arm rotates, the installation length of the spring can be extended or shortened along with the change of the rotating angle of the rotating arm, and the tension of the spring can be changed along with the change. In order to reduce the operating force of the opening/closing mechanism, it is necessary to adjust the tensile force of the spring according to the actual weight of the door. The large spring needs a large external force to be stretched, and the problem of how to mount the spring with a large stretching force in place needs to be solved during mounting.
Disclosure of Invention
The to-be-solved problem of the utility model is to just not enough above and provide one kind and can avoid the spring to be difficult to the elasticity device of installation problem under tensile stress state. The technical scheme is as follows:
the symmetrical spring device with adjustable tension force has the key technology that the symmetrical spring device comprises a support, a first connecting rod, a second connecting rod and a spring, wherein the first connecting rod is respectively installed at two ends of the support, the first connecting rod is connected with the second connecting rod through the connecting rod, so that the axial leads of the first connecting rod and the second connecting rod are parallel to each other and form a parallelogram structure with the connecting rods, the spring is respectively installed at two ends of the second connecting rod, and the other end of the spring is rotatably connected to a rotating arm.
The support comprises side plates and a bottom plate, the two side plates are respectively and vertically fixed on two sides of the bottom plate, and reinforcing rings are respectively arranged on one sides of two ends of each side plate.
The first connecting rod is a cylindrical rod piece, third round holes are formed in the two ends of the first connecting rod, and first platforms are arranged at the two ends of the first connecting rod respectively.
The second connecting rod is a cylindrical rod piece, and two ends of the second connecting rod are respectively provided with a second platform.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. the middle beam is a large-scale bearing beam in the center of the underframe of the box car, the middle beam is suitable for being provided with a support of a spring, but the inner cavity of the middle beam at the end part of the underframe needs to accommodate a car coupler buffer device, the middle beam at the part is usually a cross beam with an opening at the bottom, the structure at the lower end of the middle beam is relatively weak, and the middle beam is not suitable for bearing overlarge transverse force. The utility model discloses the structure is through first connecting rod, the second connecting rod, connecting rod and shackle have the spring symmetric connection of ring to both ends to be fixed to set up in the support both sides of well roof beam bottom, the support provides the impetus for the spring, first connecting rod, the second connecting rod, the spring forms along the atress structure of support centerline symmetry, make the horizontal component of spring tensile force offset each other on the support, alleviate horizontal load on the support, and then the horizontal load that the well roof beam bore is reduced by a wide margin, and the fail safe nature has been increased.
2. The utility model discloses a first connecting rod, the second connecting rod, the changeable parallelogram structure of a connecting rod place side length is constituteed to connecting rod and nut, the axial lead of first connecting rod and second connecting rod is parallel, rotating adjusting nut, can change connecting rod and adjusting nut's cooperation position, and then change the distance of first connecting rod and second connecting rod, adjusting spring's tensile length and tensile force size (can the manpower when spring force is less elongate the spring, it is very big when elasticity, when the manpower is difficult to the pulling, must be with the help of screw mechanism on the connecting rod, convert the less turning moment who acts on the connecting rod into great axial force, it is comparatively convenient with nut adjusting spring's tensile length, and is laborsaving, the tensile length of spring is longer, the big end of spring, the tensile length of spring is shorter, the tensile force of spring is smaller.
3. First connecting rod, second connecting rod and connecting rod constitute a changeable parallelogram mechanism of length of a side, and when the rocking arm rotated, drive spring, connecting rod, second connecting rod and first connecting rod through breaking out and rotate around the first round hole center of support like this, each subassembly can the change of self-adaptation rocking arm position, can not appear holding out strong phenomenon.
4. The connecting rod is provided with a thread with enough length so as to ensure that the connecting rod can still be screwed with the adjusting nut when the spring is in a free state. At this time, the installation length L of the spring is less than or equal to the free length L of the spring0The tension force of the spring is zero, and the two ends of the spring can be easily connected with the second connecting rod and the shackle which is rotatably arranged on the rotating arm respectively, so that the spring is installed in a zero tension state, and the problem that the spring is difficult to install in a tension stress state is solved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic top view of the present invention;
FIG. 3 is a partial cross-sectional view A-A of FIG. 2;
FIG. 4 is a schematic view of the end structure of the spring of the present invention;
figure 5 is an end elevation view of the support of the present invention;
fig. 6 is a top view of the support of the present invention;
fig. 7 is a side elevational view of the support of the present invention;
fig. 8 is a side elevational view of the first link of the present invention;
FIG. 9 is a cross-sectional view of FIG. 8B-B;
fig. 10 is a side elevational view of a second link of the present invention.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
For convenience of explanation, the position relationship between the components of the utility model defines the length direction of the box wagon as longitudinal and the width direction of the box wagon as transverse.
With reference to fig. 1 to 10, a symmetrical spring device with adjustable tension force comprises a support 1, a first connecting rod 2, a second connecting rod 3 and a spring 4, wherein the first connecting rod 2 is installed at two ends of the support 1 through first round holes 1.4 on the support respectively by using cotter pins 7, the cotter pins 7 penetrate through fourth round holes 2.3 on the first connecting rod to split the lower end, so that the first connecting rod 2 is prevented from longitudinally separating from the first round holes 1.4 along a box car, the first connecting rod 2 adopts a connecting rod 5 with long threads to be connected with the second connecting rod 3 through adjusting nuts 6 and third round holes 2.1 at two ends of the first connecting rod 2, the axial leads of the first connecting rod 2 and the second connecting rod 3 are ensured to be parallel, a parallelogram structure is formed by the two connecting rods 5, and fifth round holes 3.1 matched with the third round holes 2.1 are formed at two ends of the second connecting rod 3. Two ends of the second connecting rod 3 are respectively provided with a spring 4, and the other end of the spring 4 adopts a U-shaped or bow-shaped shackle 8 and is rotationally connected to a rotating arm 9 on the side surface 10 of the boxcar underframe through a shackle bolt 8.2. The tensile force of the spring 4 is transmitted to the pivot arm 9 to reduce the load of the door opening and closing mechanism.
The support 1 includes curb plate 1.1 and bottom plate 1.2, and two blocks of curb plates 1.1 are the vertical fixation respectively in bottom plate 1.2 both sides, and curb plate 1.1 both ends are arc, and first round hole 1.4 is established respectively at the both ends of curb plate 1.1, sets up respectively in curb plate 1.1 both ends one side with the concentric reinforcement circle 1.3 of first round hole 1.4 to increase the structural strength of first round hole 1.4 department, bottom plate 1.2 is the rectangle.
And second round holes 1.5 are respectively formed at two ends of the bottom plate and used for fixing the support.
The support 1 is fixedly arranged below a middle beam 11 at the end part of the boxcar chassis through a second round hole 1.5 on the support by adopting a bolt 12 and a nut 13, and forms a closed structure together with the middle beam with an opening at the bottom of the upper part, so that the transverse bearing capacity of the middle beam is greatly improved.
The first connecting rod 2 is a cylindrical rod piece, third round holes 2.1 penetrating through the connecting rod along the radial direction are formed in two ends of the first connecting rod 2, and 1 first platform 2.2 vertical to the axis of the third round holes 2.1 is arranged at two ends of the first connecting rod 2 respectively so as to increase the contact area with the adjusting nut 6 and reduce the pressure of a contact part.
And 2 fourth round holes 2.3 which penetrate through the connecting rod along the radial direction are symmetrically formed in the middle of the first connecting rod 2.
The second connecting rod 3 is a cylindrical rod piece, fifth round holes 3.1 penetrating through the connecting rod along the radial direction are formed in two ends of the second connecting rod, the diameter and the hole interval of the fifth round holes 3.1 are respectively equal to those of the third round holes 2.1 of the first connecting rod, and 1 second platform 3.2 vertical to the axis of the fifth round holes 3.1 is arranged at two ends of the second connecting rod 3 respectively so as to increase the contact area with the head portion 5.2 of the connecting rod and reduce the pressure of a contact part. The first platform 2.2 on the first connecting rod 2 faces the support, the back of the second platform 3.2 on the second connecting rod 3 faces the support, and the first platform 2.2 is parallel to the second platform 3.2.
The both ends of spring 4 are equipped with confined ring 4.1 respectively, and the internal diameter of ring 4.1 is greater than the external diameter of second connecting rod 3 external diameter and the external diameter of break-out main aspects 8.1, makes things convenient for spring 4 to be connected with second connecting rod 3 and break-out 8 smoothly to can not drop after the installation. When the spring 4 and the shackle 8 are installed, the ring 4.1 at the other end of the spring is sleeved in the shackle groove 8.3.
In the figure, 9.1 is the rotation center line of the rotating arm, and 1.6 is the center line of the support.
When the tensile force of the spring 4 needs to be adjusted, the adjusting nut 6 is rotated towards the tail part 5.1 direction of the connecting rod, so that the spring 4 is continuously stretched, and the tensile force of the spring 4 is increased; by turning the adjusting nut 6 in the opposite direction towards the connecting rod head 5.2, the length of the spring 4 will be shortened, so that the tension of the spring 4 is reduced.
The utility model discloses an above the best mode, probably utilize to the designer in this design field the utility model discloses the moist decorations of form such as name modification, mounted position change, material improvement, structural shape optimization are done to the principle, and any moist decorations and optimization on this basis are all in the utility model discloses in the protection range.
Claims (10)
1. The utility model provides a pulling force adjustable symmetry formula spring assembly, its characterized in that includes support (1), first connecting rod (2), second connecting rod (3) and spring (4), install first connecting rod (2) respectively at support (1) both ends, second connecting rod (3) are connected through connecting rod (5) in first connecting rod (2), make the axial lead of first connecting rod (2) and second connecting rod (3) parallel to each other, form a parallelogram structure with connecting rod (5), spring (4) are installed respectively at second connecting rod (3) both ends, the other end of spring (4) rotates and is connected to on rocking arm (9).
2. The symmetrical tension-adjustable spring device according to claim 1, wherein the support comprises side plates (1.1) and a bottom plate (1.2), the two side plates (1.1) are respectively and vertically fixed on two sides of the bottom plate (1.2), and reinforcing rings (1.3) are respectively arranged on one side of two ends of each side plate (1.1).
3. The symmetrical spring device with adjustable tension as claimed in claim 2, wherein the side plate (1.1) is provided with a first circular hole (1.4) at each end.
4. The symmetrical spring device with adjustable tension as claimed in claim 2, wherein the bottom plate (1.2) is provided with second round holes (1.5) at both ends.
5. The symmetrical tension-adjustable spring device according to claim 1, wherein the first connecting rod (2) is a cylindrical rod, the two ends of the first connecting rod are provided with third round holes (2.1), and the two ends of the first connecting rod (2) are respectively provided with the first platforms (2.2).
6. The symmetrical tension-adjustable spring device as claimed in claim 1, wherein the first connecting rod (2) is provided with a fourth circular hole (2.3) symmetrically at the middle.
7. The symmetrical tension-adjustable spring device according to claim 1, wherein the second connecting rod (3) is a cylindrical rod, and the second platform (3.2) is respectively arranged at both ends of the second connecting rod (3).
8. The symmetrical spring device with adjustable tension as claimed in claim 1, wherein the second connecting rod (3) has fifth round holes (3.1) at both ends.
9. The symmetrical tension-adjustable spring device according to claim 1, wherein the two ends of the spring (4) are respectively provided with a circular ring (4.1), the outer end of the spring (4) is connected with a shackle (8), and the shackle (8) is rotatably connected to a rotating arm (9) of the side surface (10) of the underframe of the boxcar.
10. Symmetrical spring device according to claim 9, characterised in that the inner diameter of the ring (4.1) is larger than the outer diameter of the second connecting rod (3) and the outer diameter of the shackle nose (8.1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023102095.8U CN214888535U (en) | 2020-12-21 | 2020-12-21 | Symmetrical spring device with adjustable tension |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023102095.8U CN214888535U (en) | 2020-12-21 | 2020-12-21 | Symmetrical spring device with adjustable tension |
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| Publication Number | Publication Date |
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| CN214888535U true CN214888535U (en) | 2021-11-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202023102095.8U Active CN214888535U (en) | 2020-12-21 | 2020-12-21 | Symmetrical spring device with adjustable tension |
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| CN (1) | CN214888535U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112594311A (en) * | 2020-12-21 | 2021-04-02 | 中车眉山车辆有限公司 | Symmetrical spring device with adjustable tension |
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2020
- 2020-12-21 CN CN202023102095.8U patent/CN214888535U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112594311A (en) * | 2020-12-21 | 2021-04-02 | 中车眉山车辆有限公司 | Symmetrical spring device with adjustable tension |
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