CN209875828U

CN209875828U - Bidirectional variable damping type buffer device

Info

Publication number: CN209875828U
Application number: CN201920591167.8U
Authority: CN
Inventors: 段扬名; 彭厦; 曾立勇; 黄胜良
Original assignee: Zhuzhou Mingyang Rubber Co Ltd
Current assignee: Zhuzhou Mingyang Rubber Co Ltd
Priority date: 2019-04-26
Filing date: 2019-04-26
Publication date: 2019-12-31
Anticipated expiration: 2029-04-26

Abstract

The utility model discloses a two-way variable damping formula buffer, including piston, a pair of apron and cylinder body, the piston includes the cock body and sets up the body of rod at both ends, and logical chamber has been seted up to the cylinder body, and a pair of apron sets up at the both ends that lead to the chamber, and one of them apron and cylinder body fixed seal are connected, another apron can be followed and led to the chamber and removed, and on the body of rod at both ends was worn to locate the apron that corresponds the end, all filled with buffer material between the apron at cock body and both ends, be close to and be equipped with on the body of rod of fixed end apron and press the platform, be close to and be equipped with on the. The damping device has the advantages of simple and compact structure, large capacity, wide application range, bidirectional adjustable damping and adjustable tension and compression rigidity.

Description

Bidirectional variable damping type buffer device

Technical Field

The utility model relates to a medical auxiliary instrument especially relates to a two-way variable damping formula buffer.

Background

The buffer is one of important parts of the rail transit vehicle, and has the function of alleviating longitudinal impact and vibration caused by the change of traction force of a locomotive or the collision of vehicles during starting, braking and shunting operations of the vehicles during the running process. It directly influences the main technical and economic indexes related to railway transportation efficiency, such as total traction weight, running speed, total vehicle weight, marshalling operation efficiency and the like of the train. The performance of the buffer directly affects the driving safety and the comfort of passengers.

The cement buffer has the characteristics of simple structure, convenience in manufacturing, large capacity, high absorption rate and the like, so that the cement buffer is widely applied to rail transit at present. At present, most of common rail transit buffers are one-way buffers and have determined damping, and the application range of the buffers is limited.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome the not enough of prior art, provide a simple structure compactness, capacious, application scope is wide, the damping is two-way adjustable and draw and press the two-way variable damping formula buffer of rigidity adjustable.

In order to solve the technical problem, the utility model discloses a following technical scheme:

the utility model provides a two-way variable damping formula buffer, includes piston, a pair of apron and cylinder body, the piston includes the cock body and sets up the body of rod at both ends, the cylinder body has been seted up and has been led to the chamber, and is a pair of the apron sets up at the both ends that lead to the chamber, and one of them apron can be followed with fixed sealing connection of cylinder body, another apron and lead to the chamber and removed, and the body of rod at both ends is worn to locate on the apron that corresponds the end, all be filled with buffer material between the apron at cock body and both ends, be close to and be equipped with on the body of rod of fixed end apron and press the platform, be close.

As a further improvement of the above technical solution:

and a fixed pull ring for limiting the end cover plate is arranged on the cylinder body at the cavity opening close to the movable end cover plate.

And the plug body is provided with a through throttling hole, and the through direction of the throttling hole is consistent with the running direction of the plug body.

A first groove is formed in the periphery of the plug body, and a guide ring is filled in the first groove.

The apron of stiff end is close to the second recess has been seted up on the week edge of pole body side, the second recess intussuseption is equipped with the guide ring.

The apron of stiff end is close to the third recess has been seted up on the week edge of pole body side, the third recess intussuseption is equipped with the dynamic seal spare.

The apron internal and external periphery of expansion end has all seted up the fourth recess, the fourth recess intussuseption is equipped with the dynamic seal spare.

The diameter of the rod body close to the fixed end cover plate is larger than that of the rod body close to the movable end cover plate.

The pull table is arranged as a nut, and the nut is in threaded connection with the rod body.

Compared with the prior art, the utility model has the advantages of:

the utility model discloses a two-way variable damping formula buffer, including piston, a pair of apron and cylinder body, the piston includes the cock body and sets up the body of rod at both ends, and logical chamber has been seted up to the cylinder body, and a pair of apron sets up at the both ends that lead to the chamber, and one of them apron and the fixed sealing connection of cylinder body, another apron can be followed and lead to the chamber and removed, and on the body of rod at both ends was worn to locate the apron that corresponds the end, all filled buffer material between the apron at cock body and both ends, be equipped with on the body of rod that is close to the fixed end apron and press the platform, be equipped with on the body. In the structure, when external pressure is generated, the plug body moves towards the movable end cover plate, the effective volume between the plug body and the movable end cover plate is reduced, and the buffer material in the cavity is compressed, so that buffer vibration reduction is realized when the plug body is pressed; when an external pulling force is generated, the plug body moves towards the fixed end cover plate, the effective volume between the plug body and the fixed end cover plate is reduced, and the buffer material in the cavity is compressed, so that the buffer vibration reduction when the plug body is pulled is realized; furthermore, a gap formed between the pressing table and the fixed end cover plate is used for limiting a pressed stroke, a gap formed between the plug body and the fixed end cover plate is used for limiting a pulled stroke, the movable end cover plate is driven by the pulling table to act, the effects of bidirectional damping adjustment and random adjustment of pulling and pressing rigidity are achieved, and the application range is widened; the whole structure is simple and compact, and the capacity is large.

Drawings

Fig. 1 is a schematic view of the structure of the present invention.

Fig. 2 is a main sectional structural view of the present invention (the guide ring and the dynamic seal member are not shown).

Fig. 3 is a schematic main sectional structure diagram of the present invention.

The reference numerals in the figures denote:

1. a piston; 11. a rod body; 111. pressing the table; 112. pulling the platform; 12. a plug body; 121. an orifice; 122. a first groove; 2. a cover plate; 21. a second groove; 22. a third groove; 23. a fourth groove; 3. a cylinder body; 4. a buffer material; 5. fixing a pull ring; 6. a guide ring; 7. and a dynamic sealing element.

Detailed Description

The invention will be described in further detail with reference to the drawings and specific examples.

As shown in fig. 1 to 3, the utility model discloses an embodiment of two-way variable damping formula buffer, including piston 1, a pair of apron 2 and cylinder body 3, piston 1 includes cock body 12 and the body of rod 11 of setting at both ends, cylinder body 3 has been seted up and has been led to the chamber, a pair of apron 2 sets up at the both ends that lead to the chamber, one of them apron 2 and 3 fixed sealing connection of cylinder body, another apron 2 can be followed and led to the chamber and removed, the body of rod 11 at both ends wears to locate on the apron 2 that corresponds the end, buffer material 4 has all been filled between the apron 2 at cock body 12 and both ends, be equipped with on the body of rod 11 that is close to stiff end apron 2 and press platform 111, be equipped with on the body of rod 11 that is close to movable. In the structure, when external pressure is generated, the plug body 12 moves towards the movable end cover plate 2, the effective volume between the plug body 12 and the movable end cover plate 2 is reduced, and the buffer material 4 in the cavity is compressed, so that buffer vibration reduction is realized when the plug is pressed; when an external pulling force is generated, the plug body 12 moves towards the fixed end cover plate 2, the effective volume between the plug body 12 and the fixed end cover plate 2 is reduced, and the buffer material 4 in the cavity is compressed, so that the buffer vibration reduction when the plug body is pulled is realized; furthermore, a gap formed between the pressing platform 111 and the fixed end cover plate 2 is used for limiting a compression stroke, a gap formed between the plug body 12 and the fixed end cover plate 2 is used for limiting a tension stroke, and the pulling platform 112 drives the movable end cover plate 2 to act, so that the effects of bidirectional damping adjustability and random tension and compression rigidity adjustment are realized, and the application range is improved; the whole structure is simple and compact, and the capacity is large.

In this embodiment, a fixed pull ring 5 for limiting the end cover plate 2 is installed at the opening of the cylinder body 3 close to the movable end cover plate 2. In the structure, the fixed pull ring 5 is in threaded connection with the cavity opening of the cylinder body 3 to limit the movable end cover plate 2.

In this embodiment, the plug 12 is provided with a through orifice 121, and the through direction of the orifice 121 coincides with the running direction of the plug 12. In this structure, when a force is applied, the buffer material 4 flows to another cavity through the orifice 121, so that high absorption rate is realized, in this embodiment, the buffer material 4 is set as cement, and in other embodiments, fluid materials such as hydraulic oil can be set.

In this embodiment, a first groove 122 is formed on the periphery of the plug 12, and the guide ring 6 is filled in the first groove 122. The accurate guide of the plug body 12 in the whole displacement stroke can be ensured, the interference between the plug body 12 and the cylinder body 3 is effectively avoided, and the stability and the service life of the product are ensured.

In this embodiment, a second groove 21 is formed on the periphery of the cover plate 2 at the fixed end, which is close to the rod body 11 side, and the guide ring 6 is filled in the second groove 21. Can guarantee the accurate direction of the body of rod 11 in whole displacement stroke, effectively avoid the interference between the body of rod 11 and apron 2, guarantee the stability and the life of product.

In this embodiment, a third groove 22 is formed on the periphery of the cover plate 2 at the fixed end, which is close to the rod body 11 side, and the dynamic sealing element 7 is filled in the third groove 22. This movable sealing member 7 can also guarantee the leakproofness when guaranteeing the displacement performance of the body of rod 11.

In this embodiment, the inner and outer peripheral edges of the cover plate 2 at the movable end are both provided with a fourth groove 23, and the fourth groove 23 is filled with a movable sealing element 7. This movable sealing member 7 can also guarantee the leakproofness when guaranteeing the apron 2 displacement performance of activity end.

In this embodiment, the diameter of the rod 11 near the fixed end cover plate 2 is larger than the diameter of the rod 11 near the movable end cover plate 2. The rod body 11 close to the fixed end cover plate 2 is a stressed end, and the diameter of the rod body 11 close to the movable end cover plate 2 is larger than that of the rod body 11 close to the movable end cover plate, so that the stability and the reliability can be further ensured.

In this embodiment, the pull platform 112 is configured as a nut, and the nut is connected with the rod 11 by a thread. On one hand, the arrangement ensures the detachability and is convenient to install; on the other hand, the adjusting of the nut can indirectly adjust the distance between the movable end cover plate 2 and the plug body 12, and the application range is improved.

Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention. The technical solution of the present invention can be used by anyone skilled in the art to make many possible variations and modifications, or to modify equivalent embodiments, without departing from the scope of the technical solution of the present invention, using the technical content disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments by the technical entity of the present invention should fall within the protection scope of the technical solution of the present invention.

Claims

1. The utility model provides a two-way variable damping formula buffer, includes piston (1), a pair of apron (2) and cylinder body (3), piston (1) is including cock body (12) and set up the body of rod (11) at both ends, the logical chamber has been seted up in cylinder body (3), and is a pair of apron (2) set up at the both ends that lead to the chamber, and one of them apron (2) and cylinder body (3) fixed sealing connection, another apron (2) can be followed and lead to the chamber and removed, and the body of rod (11) at both ends are worn to locate on apron (2) that correspond the end, all be filled with buffer material (4) between apron (2) at cock body (12) and both ends, are close to and are equipped with on body of rod (11) of fixed end cover board (2) and press platform (111), are close to and are equipped with on body of rod (11) of movable end cover board.

2. The bi-directional variable damping cushion device of claim 1, wherein: and a fixed pull ring (5) used for limiting the end cover plate (2) is arranged at the cavity opening of the cylinder body (3) close to the movable end cover plate (2).

3. The bi-directional variable damping cushion device of claim 2, wherein: the plug body (12) is provided with a through throttle hole (121), and the through direction of the throttle hole (121) is consistent with the running direction of the plug body (12).

4. The bi-directional variable damping cushion device of claim 3, wherein: a first groove (122) is formed in the periphery of the plug body (12), and a guide ring (6) is filled in the first groove (122).

5. The bi-directional variable damping cushion device of claim 4, wherein: the apron (2) of stiff end is close to the periphery of the body of rod (11) side and has been seted up second recess (21), second recess (21) intussuseption is equipped with guide ring (6).

6. The bi-directional variable damping cushion device of claim 5, wherein: the apron (2) of stiff end is close to the periphery of the body of rod (11) side and has been seted up third recess (22), third recess (22) intussuseption is equipped with dynamic seal spare (7).

7. The bi-directional variable damping cushion device of claim 6, wherein: the movable end the apron (2) interior periphery edge has all seted up fourth recess (23), it is equipped with movable sealing member (7) to fill in fourth recess (23).

8. The bi-directional variable damping cushion device according to any one of claims 1 to 7, wherein: the diameter of the rod body (11) close to the fixed end cover plate (2) is larger than that of the rod body (11) close to the movable end cover plate (2).

9. The bi-directional variable damping cushion device according to any one of claims 1 to 7, wherein: the pull table (112) is arranged to be a nut, and the nut is in threaded connection with the rod body (11).

10. The bi-directional variable damping cushion device of claim 8, wherein: the pull table (112) is arranged to be a nut, and the nut is in threaded connection with the rod body (11).