WO2023134316A1

WO2023134316A1 - Buffer stop

Info

Publication number: WO2023134316A1
Application number: PCT/CN2022/135149
Authority: WO
Inventors: 杨欣; 周君锋; 郭鹏飞; 许鑫; 韩旭
Original assignee: 中车青岛四方机车车辆股份有限公司
Priority date: 2022-01-17
Filing date: 2022-11-29
Publication date: 2023-07-20
Also published as: CN114228769B; CN114228769A

Abstract

A buffer stop, comprising a mounting base and a buffer stop cap made of rubber material, the buffer stop cap and the mounting base being connected to one another to enclose a sealed accommodating cavity, and the accommodating cavity being filled with a fluid medium; and further comprising a buffer cylinder and an elastic member arranged in the accommodating cavity, the buffer cylinder comprising a cylinder body and a piston, the piston being provided with a damping hole, and the elastic member being connected to the piston; one of the cylinder body and the elastic member interacts with the buffer stop cap, and the other of the cylinder body and the elastic member interacts with the mounting base. The present buffer stop has better buffering and stopping performance, better facilitates adjustment, and can conveniently form compression rigidity curves of more shapes, so as to better meet usage requirements.

Description

a bogie

This application claims the priority of the Chinese patent application with the application number 202210051136.X and the title of the invention "a kind of stop device" submitted to the China Patent Office on January 17, 2022, the entire contents of which are incorporated in this application by reference .

technical field

The present application relates to the technical field of stop structures, in particular to a stop device.

Background technique

Traditional stoppers used in rail vehicles and other equipment are generally rubber stoppers with a single material and limited cushioning stopper performance. Moreover, based on the characteristics of the rubber material, its stiffness and compression distance can only present a single nonlinear curve (compression stiffness curve), and the adjustment of the compression stiffness curve can only be realized by changing the type of rubber material, and the adjustment range is limited.

Contents of the invention

The purpose of the present application is to provide a stop device, which has better buffer stop performance, is easier to adjust, and can conveniently form more compression stiffness curves in various shapes to better meet the use requirements.

In order to solve the above technical problems, the present application provides a stop device, which includes a mounting base and a rubber stop cap, the stop cap is connected to the mounting base to enclose and form an airtight accommodation chamber, the accommodation The cavity is filled with a fluid medium; it also includes a buffer cylinder and an elastic member arranged in the accommodating cavity, the buffer cylinder includes a cylinder body and a piston, the piston is provided with a damping hole, and the piston is connected to the elastic member One of the cylinder body and the elastic member interacts with the stop cap, and the other of the cylinder body and the elastic member interacts with the mounting seat.

With the above-mentioned structure, when the stopper cap is in contact with the component to be stopped and thereby produces extrusion deformation, both the stopper cap itself and the fluid medium in the accommodation cavity can be used to block the above-mentioned deformation; and, the cylinder body and the piston enclose The fluid medium in the formed cavity can enter the accommodation cavity through the damping hole. Under the damping effect of the damping hole, it is more difficult for the fluid medium to flow out of the buffer cavity, which can prevent the deformation of the stop cap to a greater extent; When the bottom wall of the body is in contact, the elastic member can directly participate in blocking the deformation of the stopper cap. In this way, the stop device provided in the present application has various forms of buffer stops, and the performance of the buffer stops can be better.

In addition, since the stop device provided in the embodiment of the present application is also equipped with a variety of components with buffer stop performance such as fluid medium, damping hole and elastic member, in practice, by adjusting the type of fluid medium, the size of the damping hole The adjustment of the adjustment and the adjustment of the type of elastic parts, together with the adjustment of the material of the stop cap, can generate more compression stiffness curves of various shapes, which can better meet the needs of use.

Optionally, the mounting base includes a body and a barrel, the body is provided with a threaded hole, the barrel includes a peripheral wall and a bottom wall, the peripheral wall is threadedly fitted into the threaded hole, and the cylinder and the other of the elastic member interacts with the bottom wall portion.

Optionally, a limiting member is provided on a portion of the peripheral wall portion located in the accommodating cavity, and the limiting member is used to cooperate with the body to limit the position.

Optionally, a locking nut is further included, and the locking nut is screwed to the peripheral wall portion and abuts against a side of the body away from the accommodating cavity.

Optionally, the elastic member is a spring, and a part of the spring is located in the barrel and abuts against the bottom wall.

Optionally, the mounting seat is made of metal; and/or, the inner wall of the stop cap is provided with a coating.

Optionally, a spacer is also included, and the spacer is arranged between the installation seat and the component to be installed.

Optionally, the pad is made of non-metallic material.

Optionally, the spacer is provided with escape holes.

Optionally, the fluid medium is at least one of a gas medium and a liquid medium.

Description of drawings

FIG. 1 is a schematic structural view of a specific embodiment of a stopper device provided in the present application.

The reference numerals in Fig. 1 are explained as follows:

1 mounting seat, 11 body, 12 barrel, 121 limit member;

2 stop caps;

3 buffer cylinders, 31 cylinder blocks, 32 pistons;

4 elastic parts;

5 lock nuts;

6 pads, 61 avoidance holes;

7 parts to be installed;

8 parts to be stopped;

A chamber.

Detailed ways

In order to enable those skilled in the art to better understand the technical solutions of the present application, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Please refer to FIG. 1 . FIG. 1 is a schematic structural diagram of a specific embodiment of a stopper device provided in the present application.

As shown in FIG. 1 , the present application provides a stop device, which is arranged between the component to be installed 7 and the component to be stopped 8 . In detail, the stop device can be installed on the component to be installed 7 , and can stop the component to be stopped 8 , so as to prevent the component to be stopped 8 from directly colliding with the component to be installed 7 .

Here, the embodiment of the present application does not limit the specific types of the component to be installed 7 and the component to be stopped 8, which is actually related to the application scenario of the stopper device. Taking the application to a rail vehicle as an example, the component to be installed 7 may specifically be a bogie frame, etc., and the component to be stopped 8 may specifically be a center pin or the like.

In addition, the embodiment of the present application does not limit the stop direction of the stop device. Still taking the application to a rail vehicle as an example, the stop device can be used for a transverse stop, can also be used for a longitudinal stop, or can also be applied to a vertical stop.

The definitions of "horizontal", "longitudinal" and "vertical" above are all based on the rail vehicle; specifically, the length direction of the rail vehicle is regarded as the longitudinal direction, and the width direction of the rail vehicle is regarded as the transverse direction, and then the horizontal and longitudinal The direction perpendicular to the formed planes is the vertical direction, and the vertical direction may also be referred to as the up-down direction.

The above-mentioned stop device includes a mounting seat 1 and a stop cap 2 made of rubber.

The mounting seat 1 is used for assembling the stop device on the component 7 to be installed, so as to determine the installation position of the stop device. The assembly method between the mounting base 1 and the component to be installed 7 is not limited. In practice, those skilled in the art can set it according to actual needs, as long as the reliability of the installation can be satisfied. For example, the mounting base 1 and the component to be installed 7 can be connected by connecting pieces in the form of screws, bolts, etc. This embodiment can be referred to FIG. 1 to facilitate the disassembly of the stop device; The components 7 to be installed may also be connected by bonding, welding or the like.

The material of the mounting seat 1 is not limited, and in practice, those skilled in the art can configure it according to actual needs, as long as it can meet the requirements of use. As a preferred solution, the mount 1 may be made of metal. In this way, the structural strength of the mounting base 1 is relatively high, which can more effectively resist wear during installation and use, and the service life can be longer; The assembly between the mounting base 1 and the component to be installed 7 can be facilitated; in addition, structures such as holes (such as threaded holes hereinafter) can also be conveniently processed on the mounting base 1 .

The stopper cap 2 is used to connect with the mounting base 1 to enclose and form a closed accommodation chamber A, and the accommodation chamber A is filled with a fluid medium. The connection method between the stop cap 2 and the mounting seat 1 may not be limited, and it is specifically related to the material of the mounting seat 1; taking the aforementioned mounting seat 1 made of metal material as an example, the connection between the stop cap 2 and the mounting seat 1 It can be connected by vulcanization process.

Further, it also includes a buffer cylinder 3 and an elastic member 4 arranged in the chamber A, the buffer cylinder 3 includes a cylinder body 31 and a piston 32, the piston 32 is provided with a damping hole (not marked in the figure), and the piston 32 is connected with an elastic member 4. One of the cylinder body 31 and the elastic member 4 interacts with the stop cap 2 , and the other of the cylinder body 31 and the elastic member 4 interacts with the mounting seat 1 .

For ease of description, the cavity formed by the cylinder body 31 and the piston 32 may be referred to as a buffer cavity B.

With the above-mentioned structure, when the stopper cap 2 is in contact with the member 8 to be stopped and then squeezed and deformed, both the stopper cap 2 itself and the fluid medium in the accommodation chamber A can be used to block the above-mentioned deformation; and, the buffer chamber The fluid medium in B can enter into the accommodation chamber A through the damping hole, and under the damping effect of the damping hole, it is more difficult for the fluid medium to flow out of the buffer chamber B, which can block the deformation of the stopper cap 2 to a greater extent; while the piston 32 When in contact with the bottom wall of the cylinder body 31 , the elastic member 4 can directly participate in blocking the deformation of the stopper cap 2 . In this way, the stop device provided in the present application has various forms of buffer stops, and the performance of the buffer stops can be better.

In addition, since the stop device provided in the embodiment of the present application is also equipped with a variety of components with buffer stop performance such as fluid medium, damping hole and elastic member 4, in practice, through the adjustment of the type of fluid medium, the damping hole The size adjustment and the adjustment of the 4 types of elastic parts, combined with the adjustment of the material of the stop cap 2, can generate more compression stiffness curves in various shapes, which can better meet the needs of use.

The specific compression stiffness curve adjustment methods include but are not limited to: adjustment of the material of the stop cap 2, adjustment of the size of the stop cap 2, adjustment of the type of fluid medium, adjustment of the size of the buffer cylinder 3, adjustment of the size of the damping hole, and adjustment of the size of the elastic member 4 Type adjustments, etc.

The above-mentioned fluid medium may be a liquid medium, such as oil, and in this embodiment, the above-mentioned buffer cylinder may also be called an oil cylinder. Alternatively, the above-mentioned fluid medium can also be a gaseous medium, such as air. In this embodiment, the above-mentioned buffer cylinder can also be called a cylinder; the gaseous medium has high compressibility, which can further improve the performance of the present application. Cushioned stop performance of the provided stop device. Alternatively, the above-mentioned fluid medium may include both a liquid medium and a gaseous medium, and the gaseous medium may exist in the liquid medium in the form of an air bag, thereby isolating the gaseous medium from the liquid medium.

In order to better wrap the stopper cap 2 on the fluid medium, the inner wall of the stopper cap 2 can also be provided with a coating to isolate the rubber from the fluid medium and reduce the corrosion of the fluid medium on the rubber.

Further, the mounting seat 1 can also include a body 11 and a barrel body 12, the body 11 can be provided with a threaded hole, the barrel body 12 can include a peripheral wall and a bottom wall, the peripheral wall can be screwed into the threaded hole, the cylinder body 31 and the elastic The other of the elements 4 interacts with the bottom wall.

In this way, by screwing the barrel body 12 , the assembly position of the barrel body 12 on the body 11 can be adjusted, and the distance between the bottom wall and the stopper cap 2 can be changed to adjust the pretightening force of the elastic member 4 . In this way, the compression stiffness curve of the stop device provided by the present application can be adjusted without replacing parts, and the adjustability of the stop device can be further improved to better meet the use requirements.

The above elastic member 4 can be of various types, as long as it can meet the requirements of use. For example, the elastic member 4 can be various forms of elastic elements such as springs, elastic balls, and elastic blocks. In the solution shown in the accompanying drawings, as shown in Figure 1, the elastic member 4 can be a spring, and the spring can be located in the barrel body 12. At this time, the barrel body 12 can be equivalent to a position-limiting support member, and its inner peripheral wall surface The spring can be radially limited to better overcome the radial movement of the spring, thereby ensuring the stability of the spring during use.

Further, the portion of the peripheral wall located in the accommodating cavity A may also be provided with a limiting member 121 , which is used to cooperate with the body 11 to limit the position so as to prevent the barrel body 12 from being separated from the body 11 .

Here, the embodiment of the present application does not limit the specific structural form of the above-mentioned limiting member 121, as long as the above-mentioned technical effect can be achieved. For example, the limiting member 121 may be a ring plate extending radially outward from the outer wall surface of the peripheral wall portion; or, the limiting member 121 may also be a protrusion extending radially outward from the outer wall surface of the peripheral wall portion , the bump does not circle around the circumference. At this time, the limiting member 121 may include only one bump or multiple bumps. When the number of bumps is multiple, each bump may interval distribution.

From the perspective of FIG. 1 , the above-mentioned limiting member 121 is mainly used for limiting the rightward movement of the barrel body 12 to prevent the barrel body 12 from being separated from the main body 11 in a direction relatively away from the accommodating cavity A. Referring to FIG. In addition, a left-shift limiting component can also be added to realize the left-shift limit of the limiting member 121 relative to the main body 11 , thereby preventing the barrel body 12 from separating from the main body 11 in a direction relatively close to the accommodating cavity A.

The above-mentioned left shift limiting part can specifically be a lock nut 5, which can be screwed to the peripheral wall, and abuts against the side of the body 11 away from the accommodation chamber A, so as to prevent the barrel body 12 from facing the accommodation chamber A Excessive movement in the interior direction. At the same time, the lock nut 5 can also be used to lock the installation position of the barrel body 12 relative to the body 11, and can be used to eliminate the thread gap between the barrel body 12 and the body 11, so as to reduce the axial displacement of the barrel body 12 during use. possibility.

The stop device provided in the present application may also include a spacer 6 , which may be arranged between the mounting seat 1 and the component to be installed 7 , so as to reduce direct wear between the mounting seat 1 and the component to be installed 7 . More importantly, during installation, the size of the spacer 6 can be adjusted, and then the stop gap C between the stop cap 2 and the component to be stopped 8 can be changed to adapt to different installation space requirements, thereby The scope of application of the stop device can be further expanded.

Here, the embodiment of the present application does not limit the material of the stopper device, and in practice, those skilled in the art can configure it according to actual needs. As a preferred solution, the above pad 6 can be made of non-metallic material, such as PTFE (Poly tetrafluoroethylene, polytetrafluoroethylene), etc., which can reduce the wear of the pad 6 on the mounting seat 1 and the parts 7 to be installed.

Further, the spacer 6 may also be provided with an avoidance hole 61 for the installation of the avoidance lock nut 5 and the operation of the barrel body 12 .

In the following embodiments of the present application, the deformation of the stopper device during use can also be briefly described with reference to FIG. 1 .

When the stopper component 8 contacts the stopper cap 2, the stopper device provided by the present application starts to work, specifically: the stopper cap 2 is compressed and can drive the cylinder 31 to move toward the side where the component to be installed 7 is located , during this process, due to the action of the elastic member 4, the piston 32 basically keeps its position unchanged, and the fluid medium in the buffer chamber B flows into the accommodating chamber A through the damping hole; when the cylinder 31 moves to the side where the component 7 to be installed is located When the position is set, the piston 32 is in contact with the bottom wall of the cylinder 31; then, the elastic member 4 can be compressed and deformed.

The above are only the preferred embodiments of the present application. It should be pointed out that for those of ordinary skill in the art, some improvements and modifications can be made without departing from the principle of the application, and these improvements and modifications should also be considered as For the scope of protection of this application.

Claims

A stopper device, characterized in that it comprises a mounting base (1) and a stopper cap (2) made of rubber, the stopper cap (2) is connected to the mounting base (1) to enclose and form an airtight a housing chamber (A), the housing chamber (A) is filled with a fluid medium;

It also includes a buffer cylinder (3) and an elastic member (4) arranged in the accommodating cavity (A), the buffer cylinder (3) includes a cylinder body (31) and a piston (32), and the piston (32) A damping hole is provided, the piston (32) is connected with the elastic member (4), and one of the cylinder body (31) and the elastic member (4) is in contact with the stop cap (2) The other one of the cylinder (31) and the elastic member (4) interacts with the mounting seat (1).
The stop device according to claim 1, characterized in that, the mounting seat (1) comprises a body (11) and a barrel (12), the body (11) is provided with threaded holes, and the barrel (12) ) includes a peripheral wall portion and a bottom wall portion, the peripheral wall portion is screwed into the threaded hole, and the other of the cylinder body (31) and the elastic member (4) interacts with the bottom wall portion.
According to the stopper device according to claim 2, characterized in that, the portion of the peripheral wall located in the accommodating cavity (A) is provided with a limiting member (121), and the limiting member (121) is used to cooperate with the The body (11) cooperates to limit the position.
According to the stop device according to claim 2, it is characterized in that it further comprises a lock nut (5), the lock nut (5) is screwed on the peripheral wall part, and deviates from the body (11) One side of the accommodating cavity (A) abuts against each other.
The stop device according to claim 2, characterized in that the elastic member (4) is a spring, and a part of the spring is located in the barrel body (12) and abuts against the bottom wall.
The stop device according to any one of claims 1-5, characterized in that, the mounting seat (1) is made of metal; and/or,

The inner wall surface of the stop cap (2) is provided with a coating.
According to the stopper device according to any one of claims 1-5, it is characterized in that it also includes a spacer (6), and the spacer (6) is arranged on the mounting seat (1) and the component to be installed (7) )between.
The stop device according to claim 7, characterized in that, the pad (6) is made of non-metallic material.
The stop device according to claim 7, characterized in that, the pad (6) is provided with an avoidance hole (61).
The stop device according to any one of claims 1-5, wherein the fluid medium is at least one of a gas medium and a liquid medium.