A pantograph vibration damping block and its anti-deflection method

Abstract

A pantograph damping block includes a rubber body, a limit plate, a bearing block and a stud. The limit plate is vulcanized on the outer side of the rubber body, the bearing block is vulcanized on the upper end of the rubber body, and the bearing block is embedded in the rubber body. Studs are connected to the lower end of the limit plate and the upper end of the bearing block. An empty hole penetrating the rubber body is opened in the lateral direction of the rubber body, and the front end of the empty hole is an arc surface protruding forward. A front arc surface is provided on the front side of the rubber body, and the front arc surface is recessed backward with respect to the rubber body; an upper arc surface is provided on the top of the rubber body, and the upper arc surface is recessed downward with respect to the rubber body. Adding a damping block between the pantograph and the outdoor terminal changes the existing hard connection method between the pantograph and the outdoor terminal by bolts into a flexible connection, which plays a very good damping role. The damage at the connection between the pantograph and the outdoor terminal is greatly reduced, thereby greatly reducing the maintenance cost of the pantograph and the outdoor terminal.

Description

Technical Field

[0001] The present invention relates to an auxiliary tool for a pantograph, and particularly to a pantograph damping block and an anti-deflection method thereof. Background Art

[0002] Currently, the pantograph and the outdoor terminal are directly connected by bolts. This rigid connection makes the connection part prone to damage under long-term vibration working conditions and often requires maintenance. This not only results in relatively high maintenance costs but also consumes a large amount of working time of staff. Therefore, how to improve the connection method between the pantograph and the outdoor terminal still needs further research. Summary of the Invention

[0003] The technical problem to be solved by the present invention is: how to improve the connection method between the pantograph and the outdoor terminal to reduce the number and cost of maintenance.

[0004] In view of the above problems, the technical solution proposed by the present invention is: a pantograph damping block, including a rubber body, a limiting plate, a bearing block and a stud. The limiting plate is vulcanized on the outer side of the rubber body, the bearing block is vulcanized on the upper end of the rubber body, and the bearing block is embedded in the rubber body. Studs are connected to the lower end of the limiting plate and the upper end of the bearing block.

[0005] Preferably, an emptying hole penetrating the rubber body is opened in the transverse direction of the rubber body, and the front end of the emptying hole is an arc surface protruding forward.

[0006] Preferably, a front arc surface is provided on the front side of the rubber body, and the front arc surface is recessed backward with respect to the rubber body; an upper arc surface is provided on the top of the rubber body, and the upper arc surface is recessed downward with respect to the rubber body.

[0007] Preferably, a chamfer is provided at the junction of the rear and bottom of the rubber body. The limiting plate includes a vertical limiting plate, an inclined limiting plate and a transverse limiting plate, and the vertical limiting plate, the inclined limiting plate and the transverse limiting plate are integrally formed as a whole; the vertical limiting plate is vulcanized on the rear of the rubber body, the inclined limiting plate is vulcanized at the chamfer of the rubber body, and the transverse limiting plate is vulcanized on the bottom of the rubber body, and the vertical limiting plate, the inclined limiting plate and the transverse limiting plate are integrally formed as a whole.

[0008] Preferably, the lower end of the bearing block is embedded in the rubber body. The bearing block is in the shape of a cuboid, and the edges of the bearing block embedded in the rubber body are chamfered, and the bearing block is inclined with respect to the vertical direction.

[0009] Preferably, the stud is a cylindrical shape provided with an external thread. The stud connected to the bearing block is an upper stud, and the length direction of the upper stud is perpendicular to the surface of the upper end of the bearing block; two lower studs are connected to the transverse limiting plate, and the length directions of the two lower studs are both in the vertical direction.

[0010] An anti-deflection method for a pantograph shock absorber block, where metal components are vulcanized on the outer side and the upper end of the rubber body, and studs are connected to the metal components. The stud at the lower end is connected to the pantograph, and the stud at the upper end is connected to the outdoor terminal. When the stud at the upper end is deflected under the action of an external force, the rubber body produces a corresponding deformation, thereby preventing further deflection of the stud at the upper end.

[0011] Preferably, the metal component vulcanized on the upper end of the rubber body is a bearing block, the lower end of the bearing block is embedded in the rubber body, and the stud connected to the bearing block is the upper stud; when the upper stud is deflected under the action of an external force, the upper stud and the bearing block deflect together, and the rubber body produces a corresponding deformation to prevent further deflection of the upper stud and the bearing block.

[0012] Preferably, metal components are also vulcanized on the outer side behind the rubber body, and the metal components on the outer side of the lower end and the outer side behind the rubber body are integrally formed into a limiting plate. The stud connected to the bottom of the limiting plate is the lower stud, and the length direction of the lower stud is set as the vertical direction; so that the lower stud and the limiting plate together limit the lower end and the rear of the rubber body, preventing the rubber body from moving or deflecting downward or backward under the action of an external force.

[0013] Preferably, the stiffness of the shock absorber block is adjusted by opening a through-hole in the rubber body in the transverse direction, providing a concave front arc surface on the front side of the rubber body, and providing a concave upper arc surface on the top of the rubber body, thereby adjusting the anti-deflection ability of the shock absorber block.

[0014] The beneficial technical effects of the present invention are:

[0015] 1. A shock absorber block is added between the pantograph and the outdoor terminal, changing the existing hard connection method between the pantograph and the outdoor terminal by bolts into a flexible connection, which plays a very good shock absorption role. Significantly reduce the damage at the connection between the pantograph and the outdoor terminal, thereby significantly reducing the maintenance cost of the pantograph and the outdoor terminal.

[0016] 2. By vulcanizing a limiting plate on the outer side of the rubber body, connecting a lower stud to the limiting plate, and fixedly connecting the lower stud to the pantograph; vulcanizing a bearing block on the upper end of the rubber body, connecting an upper stud to the bearing block, and connecting the upper stud to the outdoor terminal; so that the rotational load transmitted from the outdoor terminal to the upper stud can be buffered by the rubber body, making the connection between the upper stud and the outdoor terminal, and the connection between the lower stud and the pantograph less likely to be damaged. Description of the Drawings

[0017] Figure 1 Schematic three-dimensional structure of Embodiment 1 Figure 1 ;

[0018] Figure 2Schematic diagram of the three-dimensional structure of Embodiment 1 Figure 2 ;

[0019] In the figure: rubber body 1, hollow hole 11, front arc surface 12, upper arc surface 13, vertical limiting plate 21, inclined limiting plate 22, horizontal limiting plate 23, bearing block 3, upper stud 4, lower stud 5. Specific implementation manner

[0020] The present invention will be further described below in conjunction with embodiments and drawings:

[0021] Embodiment 1: As shown in Figure 1 and Figure 2 The vibration damping block includes a rubber body 1, a limiting plate, a bearing block 3 and studs, wherein the limiting plate, the bearing block 3 and the studs are all made of metal. The limiting plate is vulcanized on the outer side of the rubber body 1, the bearing block 3 is vulcanized on the upper end of the rubber body 1, and the bearing block 3 is embedded in the rubber body 1. The limiting plate includes a vertical limiting plate 21, an inclined limiting plate 22 and a horizontal limiting plate 23, and the vertical limiting plate 21, the inclined limiting plate 22 and the horizontal limiting plate 23 are integrally formed.

[0022] In this embodiment, a straight chamfer is provided at the junction of the rear and bottom of the rubber body 1. The vertical limiting plate 21 is vulcanized on the rear of the rubber body 1, the inclined limiting plate 22 is vulcanized at the chamfer of the rubber body 1, and the horizontal limiting plate 23 is vulcanized on the bottom of the rubber body 1. The studs include an upper stud 4 and a lower stud 5, and both the upper stud 4 and the lower stud 5 are cylindrical with external threads. The upper ends of the two lower studs 5 are fixedly connected to the horizontal limiting plate 23. The two lower studs 5 are perpendicular to the horizontal limiting plate 23, and the length directions of the two lower studs 5 are both in the vertical direction. The lower ends of the two lower studs 5 are in threaded fit with the pantograph. The lower end of the upper stud 4 is fixedly connected to the bearing block 3, and the upper end of the upper stud 4 is in threaded fit with the outdoor terminal.

[0023] The lower end of the bearing block 3 is embedded in the rubber body 1, and the bearing block 3 is rectangular parallelepiped-shaped. In this embodiment, the length of the bearing block 3 in the horizontal direction is the same as the length of the rubber body 1 in the horizontal direction. Two edges of the bearing block 3 are embedded in the rubber body 1, and the two edges embedded in the rubber body 1 are both provided with straight chamfers. The surface at the upper end of the bearing block 3 extends out of the rubber body 1. The upper stud 4 is perpendicular to the surface at the upper end of the bearing block 3, and both the bearing block 3 and the upper stud 4 are inclined with respect to the vertical direction, which is to enable the upper stud 4 to be better in threaded fit with the outdoor terminal.

[0024] The upper stud 4 is not directly vulcanized to the rubber body 1. Instead, it is connected to the rubber body 1 through the carrier block 3 which is vulcanized to the rubber body 1 first. By means of the carrier block 3, the contact area with the rubber body 1 is greatly increased, thereby significantly improving the stability of vulcanization, making it difficult for the metal component to loosen from the rubber body 1 and even less likely to break away. Moreover, when the rubber body 1 deforms, it can provide greater resistance, more effectively preventing further deflection of the upper stud 4 and the carrier block 3.

[0025] The vertical limiting plate 21, the inclined limiting plate 22 and the horizontal limiting plate 23 are all vulcanized on the outer side of the rubber body 1, together playing a role in limiting the rubber body 1. The lengths of the vertical limiting plate 21, the inclined limiting plate 22 and the horizontal limiting plate 23 in the horizontal direction are the same as the length of the rubber body 1 in the horizontal direction, and the thickness is set according to the load acting on the upper stud 4 in the actual working condition.

[0026] An emptying hole 11 penetrating the rubber body 1 is provided on the rubber body 1. In this embodiment, the length direction of the emptying hole 11 is the horizontal direction. The front end of the emptying hole 11 is an arc surface protruding forward. The front end of the emptying hole 11 is set to protrude forward mainly to make the thickness of the rubber body 1 around the emptying hole 11 approximately the same.

[0027] A front arc surface 12 is provided on the front side surface of the rubber body 1, and the front arc surface 12 is recessed backward with respect to the rubber body 1. An upper arc surface 13 is provided on the top of the rubber body 1, and the upper arc surface 13 is recessed downward with respect to the rubber body 1. By providing the emptying hole 11, the recessed front arc surface 12 and the upper arc surface 13 on the rubber body 1, in addition to saving consumables, more importantly, it is to prevent the rubber body 1 from generating wrinkles when it is deformed by the external force transmitted by the upper stud 4. The wrinkles generated when the rubber body 1 deforms are likely to cause fatigue, cracking or even damage of the rubber body 1.

[0028] The damping block of this embodiment is installed between the pantograph and the outdoor terminal, changing the original direct rigid connection between the pantograph and the outdoor terminal through bolts into a flexible connection, which can play a good buffering and damping role between the pantograph and the outdoor terminal. Moreover, the damping block can also resist the rotational load transmitted from the outdoor terminal, better preventing loosening and damage at the connection between the outdoor terminal and the pantograph. The specific anti-deflection principle of the damping block is as follows:

[0029] When the upper stud 4 is deflected under the action of the rotational load transmitted from the outdoor terminal, the upper stud 4 and the carrier block 3 deflect together, and the rubber body 1 generates corresponding deformation to prevent the upper stud 4 and the carrier block 3 from continuing to deflect. One end of the lower stud 5 is fixed on the pantograph, and the other end is fixed on the horizontal limiting plate 23. Since the vertical limiting plate 21, the inclined limiting plate 22 and the horizontal limiting plate 23 are integrally formed, therefore, the above three limiting plates can all play a role in limiting the deformation of the rubber body 1, further preventing the rubber body 1 from moving or deflecting downward or backward under the action of external force.

[0030] And by opening through holes 11 penetrating the rubber body 1 in the lateral direction of the rubber body 1, arranging a sunken front arc surface 12 on the front side surface of the rubber body 1, and arranging a sunken upper arc surface 13 on the top of the rubber body 1. And set the size and position of the through holes 11, as well as the depth of the depression of the front arc surface 12 and the upper arc surface 13 according to the actual working conditions, so as to adjust the stiffness of the deflection of the shock absorber in each direction, thereby adjusting the anti-deflection ability of the shock absorber.

[0031] Obviously, without departing from the principle described in the present invention, several improvements or modifications made should be regarded as the protection scope of the present invention.

Claims

1. A pantograph vibration damping block, characterized in that: The rubber body comprises a rubber body, a limiting plate, a bearing block and a stud, the limiting plate is vulcanized on the outside of the rubber body, the bearing block is vulcanized on the upper end of the rubber body, and the bearing block is embedded in the rubber body, and the lower end of the limiting plate and the upper end of the bearing block are connected with studs; a hollow hole penetrating the rubber body is opened in the transverse direction of the rubber body, and the front end of the hollow hole is an arc surface convex forward; a front arc surface is provided on the front side surface of the rubber body, and the front arc surface is concave toward the rear of the rubber body; an upper arc surface is provided on the top of the rubber body, and the upper arc surface is concave toward the bottom of the rubber body; a chamfer is provided at the junction of the rear and bottom of the rubber body, the limiting plate comprises a vertical limiting plate, an oblique limiting plate and a transverse limiting plate, and the vertical limiting plate, the oblique limiting plate and the transverse limiting plate are integrally formed into a whole; at the rear of the rubber body A vertical limit plate is vulcanized, an oblique limit plate is vulcanized at the chamfer of the rubber body, and a transverse limit plate is vulcanized at the bottom of the rubber body, and the vertical limit plate, the oblique limit plate and the transverse limit plate are integrally formed into a whole; the lower end of the bearing block is embedded in the rubber body, the bearing block is a rectangular parallelepiped, the edges of the bearing block embedded in the rubber body are chamfered, and the bearing block is tilted relative to the vertical direction; the stud is a cylinder with an external thread, and the stud connected to the bearing block is the upper stud, and the length direction of the upper stud is perpendicular to the surface of the upper end of the bearing block; two lower studs are connected to the transverse limit plate, and the length directions of the two lower studs are both vertical; the lower end of the lower stud is connected to the pantograph thread, and the upper end of the upper stud is connected to the outdoor terminal thread.

2. A method for anti-deflection of a pantograph vibration damping block, characterized in that: Metal parts are vulcanized on the outside and upper ends of the lower end of the rubber body, and studs are connected to the metal parts. The studs at the lower end are connected to the pantograph, and the studs at the upper end are connected to the outdoor terminal. When the studs at the upper end are deflected by external force, the rubber body produces corresponding deformation, thereby preventing the studs at the upper end from further deflecting. The metal part vulcanized on the upper end of the rubber body is a bearing block, the lower end of the bearing block is embedded in the rubber body, and the studs connected to the bearing block are upper studs. When the upper studs are deflected by external force, the upper studs The stud and the bearing block deflect together, and the rubber body deforms accordingly, preventing the upper stud and the bearing block from further deflecting; a metal component is also vulcanized on the outer side of the rear of the rubber body, and the metal components on the outer side of the lower end and the rear of the rubber body are integrally formed into a limit plate, and the stud connected to the bottom of the limit plate is the lower stud, and the length direction of the lower stud is set to the vertical direction; so that the lower stud and the limit plate together limit the lower end and rear of the rubber body, preventing the rubber body from moving or deflecting downward or backward under the action of external force.

3. The anti-deflection method of a pantograph vibration damping block according to claim 2, characterized in that: By opening a hollow hole through the rubber body in the transverse direction of the rubber body, providing a concave front arc surface on the front side of the rubber body, and providing a concave upper arc surface on the top of the rubber body, the stiffness of the vibration damping block is adjusted, thereby adjusting the anti-deflection ability of the vibration damping block.

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