Stopper Device

Abstract

A stopper device is disclosed, comprising a mounting base and a rubber stopper cap, the stopper cap and the mounting base are connected and surrounded to form a sealed receiving chamber, the receiving chamber is filled with a fluid medium, and further comprising a buffer cylinder and an elastic part provided in the receiving chamber, the buffer cylinder includes a cylinder body and a piston, the piston is provided with an orifice and is connected to the elastic part, one of the cylinder body and the elastic part acts with the stopper cap and the other acts with the mounting base. The stopper device has excellent buffer-stop performance, is more convenient to adjust, and forms more shapes of compression stiffness curves to better meet the usage requirements.

Description

[Technical field]

[0001] This application claims priority to a Chinese patent application filed with the China Patent Office on January 17, 2022, bearing application number 202210051136.X and entitled "Stopper Device", the entire contents of which are incorporated herein by reference.

[0002] The present application relates to the technical field of stopper structures, and more particularly to a stopper device. [Background technology]

[0003] Traditional stopper parts applied to equipment such as railway vehicles are generally rubber stoppers, which are made of a single material and have limited buffer stopper performance. Based on the properties of the rubber material, the relationship between its stiffness and compression distance can only be expressed as a single nonlinear curve (compression stiffness curve), and the compression stiffness curve can only be adjusted by changing the type of rubber material, and the adjustment range is limited. Summary of the Invention [Problem to be solved by the invention]

[0004] The present application aims to provide a stopper device which has excellent buffer and stopper performance, is more convenient to adjust, and can form more shapes of compression stiffness curves to better meet the requirements of use. [Means for solving the problem]

[0005] In order to solve the above technical problems, the present application provides a stopper device, comprising: a mounting base and a stopper cap made of a rubber material, the stopper cap and the mounting base are connected and surrounded to form a sealed accommodating chamber, the accommodating chamber is filled with a fluid medium, and further comprising a buffer cylinder and an elastic part provided in the accommodating chamber, the buffer cylinder comprises a cylinder body and a piston, the piston is provided with an orifice and is connected to the elastic part, one of the cylinder body and the elastic part acts with the stopper cap, and the other acts with the mounting base.

[0006] According to the above structure, when the stopper cap and the stopped member come into contact with each other and the extrusion deformation occurs, both the stopper cap itself and the fluid medium in the chamber can prevent the deformation, the fluid medium in the cavity surrounded by the cylinder body and the piston enters the chamber through the orifice, and the damping effect of the orifice makes it more difficult for the fluid medium to flow out of the buffer chamber, so that the deformation of the stopper cap can be prevented to a greater extent, and when the piston comes into contact with the bottom wall of the cylinder body, the elastic part can directly participate in preventing the deformation of the stopper cap. Thus, the stopper device provided by this application has many forms of buffer stoppers, and the performance of the buffer stopper is improved.

[0007] In addition, since the stopper device provided in the embodiments of the present application is provided with multiple components having buffer and stopper performance, such as fluid medium, orifice and elastic parts, in specific practice, by adjusting the type of fluid medium, adjusting the size of the orifice and adjusting the type of elastic parts, in conjunction with adjusting the material of the stopper cap, more shapes of compression stiffness curves can be generated to better meet the needs of use.

[0008] Preferably, the mounting base includes a main body and a tub body, the main body being provided with a screw hole, the tub body including a peripheral wall portion and a bottom wall portion, the peripheral wall portion being screwed into the screw hole, and the other of the cylinder body and the elastic part acting with the bottom wall portion.

[0009] Preferably, a position limiting member is provided on a portion of the peripheral wall located within the storage chamber, and the position limiting member limits the position so as to engage with the main body.

[0010] Preferably, the device further includes a lock nut that is fastened to the peripheral wall portion and abuts against one surface of the main body that faces away from the storage chamber.

[0011] Preferably, the elastic part is a spring, a portion of which is located within the tub body and abuts against the bottom wall portion.

[0012] Preferably, the mounting base is made of a metal material and / or the inner wall surface of the stopper cap is provided with a coating.

[0013] Preferably, the mounting device further includes a spacer provided between the mounting base and the workpiece.

[0014] Preferably, the spacer is a non-metallic material.

[0015] Preferably, the spacer is provided with an escape hole.

[0016] Preferably, the fluid medium is at least one of a gaseous medium, a liquid medium. [Brief description of the drawings]

[0017] [Figure 1] FIG. 2 is a structural schematic diagram of a specific embodiment of a stopper device provided by the present application; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] In order to make those skilled in the art better understand the technical solution of the present application, the present application will be further described in detail hereinafter in combination with drawings and specific examples.

[0019] Please refer to FIG. 1, which is a structural schematic diagram of a specific embodiment of a stopper device provided by the present application.

[0020] 1, the stopper device provided by the present application is provided between a member to be mounted 7 and a member to be stopped 8. In detail, the stopper device is mounted on the member to be mounted 7, and prevents the member to be stopped 8 and the member to be mounted 7 from directly colliding with each other by acting as a stopper for the member to be stopped 8.

[0021] Here, the embodiment of the present application does not limit the specific types of the mounted member 7 and the stopped member 8, and in fact, this relates to the application scene of the stopper device. For example, when applied to a railway vehicle, the mounted member 7 may be specifically a bogie frame, and the stopped member 8 may be specifically a core pin.

[0022] In addition, the embodiments of the present application do not limit the stopper direction of the stopper device. As an example, the stopper device is still applied to a railway vehicle, and may be applied to a lateral stopper, a longitudinal stopper, or a vertical stopper.

[0023] The above definitions of "lateral direction," "longitudinal direction," and "vertical direction" are all based on railway vehicles, and specifically, the longitudinal direction is the length direction of the railway vehicle, the transverse direction is the width direction of the railway vehicle, and the direction perpendicular to the plane consisting of the transverse and longitudinal directions is the vertical direction, and the vertical direction is also called the up-down direction.

[0024] The stopper device includes a mounting base 1 and a stopper cap 2 made of rubber.

[0025] The mounting base 1 is used to mount the stopper device on the mounting member 7 and determines the mounting position of the stopper device. There is no need to limit the mounting method between the mounting base 1 and the mounting member 7, as long as those skilled in the art can set it according to actual needs in specific practice and satisfy the mounting reliability. For example, the mounting base 1 and the mounting member 7 may be connected by connecting parts in the form of screws, bolts, etc., and such an embodiment can be seen in FIG. 1 to facilitate the attachment and detachment of the stopper device, or the mounting base 1 and the mounting member 7 may be connected by adhesive, welding, etc.

[0026] There is no need to limit the material of the mounting base 1, and in specific practice, those skilled in the art can set it according to the actual needs and meet the usage requirements. As a preferred solution, the mounting base 1 is made of metal. In this way, the structural strength of the mounting base 1 is high, it can effectively resist wear during installation and use, and it has a long service life. In addition, there are many installation methods that can be selected for the metal mounting base 1, which can easily install the mounting base 1 and the mounted member 7, and the mounting base 1 can easily have structures such as holes (e.g., the following screw holes) processed.

[0027] The stopper cap 2 and the mounting base 1 are connected and surrounded to form a sealed receiving chamber A, and the receiving chamber A is filled with a fluid medium. There is no limitation on the method of connecting the stopper cap 2 and the mounting base 1, and specifically, in relation to the material of the mounting base 1, for example, a metal material is used for the mounting base 1, and the stopper cap 2 and the mounting base 1 are connected by a vulcanization process.

[0028] Further, it includes a buffer cylinder 3 and an elastic part 4 provided in the storage chamber A, the buffer cylinder 3 includes a cylinder body 31 and a piston 32, the piston 32 is provided with an orifice (not shown) and is connected to the elastic part 4, one of the cylinder body 31 and the elastic part 4 acts with the stopper cap 2 and the other acts with the mounting base 1.

[0029] For ease of description, the cavity defined by the cylinder body 31 and the piston 32 is referred to as a buffer chamber B.

[0030] According to the above structure, when the stopper cap 2 comes into contact with the stopped member 8 and extrusion deformation occurs, both the stopper cap 2 itself and the fluid medium in the accommodation chamber A can prevent the above deformation, the fluid medium in the buffer chamber B enters the accommodation chamber A through the orifice, and the damping effect of the orifice makes it more difficult for the fluid medium to flow out of the buffer chamber B, thereby preventing the deformation of the stopper cap 2 to a greater extent, and when the piston 32 comes into contact with the bottom wall of the cylinder body 31, the elastic part 4 can directly participate in preventing the deformation of the stopper cap 2. In this way, the stopper device provided by the present application has many forms of buffer stoppers, and the buffer stopper performance is improved.

[0031] In addition, since the stopper device provided in the embodiments of the present application is provided with multiple components having buffer and stopper performance, such as the fluid medium, the orifice and the elastic part 4, in specific practice, by adjusting the type of fluid medium, adjusting the size of the orifice and adjusting the four types of elastic parts, in conjunction with adjusting the material of the stopper cap 2, more shapes of compression stiffness curves can be generated to better meet the needs of use.

[0032] Specific methods for adjusting the compression stiffness curve include, but are not limited to, adjusting the material of the stopper cap 2, adjusting the size of the stopper cap 2, adjusting the type of fluid medium, adjusting the size of the buffer cylinder 3, adjusting the orifice dimensions, and adjusting the four types of elastic parts.

[0033] The above-mentioned fluid medium may be a liquid medium, such as oil, in this embodiment, the above-mentioned buffer cylinder is also called a hydraulic cylinder; or the above-mentioned fluid medium may be a gas medium, such as air, in this embodiment, the above-mentioned buffer cylinder is also called an air cylinder, the gas medium has high compressibility, which can further improve the buffer-stopper performance of the stopper device provided by the present application; or the above-mentioned fluid medium may include a liquid medium and a gas medium at the same time, the gas medium being present in the liquid medium in the form of an airbag to separate the gas medium from the liquid medium.

[0034] In order to better realize the stopper cap 2 to encase the fluid medium, a coating is further provided on the inner wall surface of the stopper cap 2 to isolate the rubber and the fluid medium and reduce the corrosion of the fluid medium to the rubber.

[0035] Furthermore, the mounting base 1 includes a main body 11 and a bucket body 12, the main body 11 is provided with a screw hole, the bucket body 12 includes a peripheral wall portion and a bottom wall portion, the peripheral wall portion is screwed into the screw hole, and the other of the cylinder body 31 and the elastic part 4 acts with the bottom wall portion.

[0036] According to this arrangement, the mounting position of the bucket body 12 on the main body 11 can be adjusted by twisting the bucket body 12, and the pitch between the bottom wall and the stopper cap 2 can be changed to adjust the biasing force of the elastic part 4. In this way, on the premise that no parts are replaced, the compression stiffness curve of the stopper device provided by the present application can be adjusted to further improve the adjustability of the stopper device and better meet the usage requirements.

[0037] The elastic part 4 may be of various types as long as it meets the requirements of use. For example, the elastic part 4 may be various types of elastic elements such as a spring, an elastic ball, an elastic block, etc. In the illustrated solution, as shown in Fig. 1, the elastic part 4 is a spring, and the spring is located in a bucket body 12, in this case, the bucket body 12 corresponds to a position limiting support part, and its inner peripheral wall surface limits the position of the spring in the radial direction, thereby well overcoming the radial escape of the spring and ensuring the stability of the spring during use.

[0038] Furthermore, a position limiting member 121 is provided on the portion of the peripheral wall located within the storage chamber A, and the position limiting member 121 restricts the position so as to engage with the main body 11, thereby preventing the bucket body 12 and the main body 11 from coming apart.

[0039] Here, the embodiments of the present application do not limit the specific structure of the position limiting member 121, as long as the above technical effects are achieved. For example, the position limiting member 121 may be an annular plate extending radially outward from the outer wall surface of the peripheral wall, or a protrusion extending radially outward from the outer wall surface of the peripheral wall, where the protrusion does not go all the way around the circumference, in which case the position limiting member 121 may include only one protrusion or may include multiple protrusions, and when there are multiple protrusions, the protrusions are distributed at intervals along the circumference.

[0040] 1 as the viewing angle, the above-mentioned position limiting member 121 is mainly used to limit the rightward movement position of the bucket body 12, and prevents the bucket body 12 from separating from the main body 11 in the direction away from the storage chamber A. In addition, a leftward movement position limiting part may be added to realize a leftward movement position limiting part of the position limiting member 121 relative to the main body 11, thereby preventing the bucket body 12 from separating from the main body 11 in the direction approaching the storage chamber A.

[0041] The above-mentioned leftward displacement limiting part is specifically a lock nut 5 that is fastened to the peripheral wall and abuts against one surface of the main body 11 that faces away from the storage chamber A, preventing excessive movement of the bucket body 12 toward the inside of the storage chamber A. In addition, the lock nut 5 locks the mounting position of the bucket body 12 relative to the main body 11, eliminating the thread gap between the bucket body 12 and the main body 11, and reducing the possibility of the bucket body 12 displacing along the axial direction during use.

[0042] The stopper device provided by the present application further includes a spacer 6 disposed between the mounting base 1 and the mounted member 7, which can reduce the direct wear between the mounting base 1 and the mounted member 7. More importantly, during installation, the size of the spacer 6 can be adjusted to change the stopper gap C between the stopper cap 2 and the stopped member 8, which can meet different installation space requirements and further expand the application range of the stopper device.

[0043] Here, the embodiment of the present application does not limit the material of the stopper device, and in specific practice, those skilled in the art can arrange it according to actual needs. As a preferred solution, the spacer 6 is a non-metallic material, such as PTFE (Poly tetra fluoroethylene), so as to reduce the wear of the spacer 6 against the mounting base 1 and the mounted member 7.

[0044] Furthermore, the spacer 6 is provided with an escape hole 61 for accommodating the installation of the lock nut 5 and the operation on the bucket body 12.

[0045] The following embodiment of the present application will further briefly explain the deformation of the stopper device during use in conjunction with FIG.

[0046] When the stopped member 8 and the stopper cap 2 come into contact with each other, the stopper device provided by the present application begins to function, specifically, the stopper cap 2 is compressed, moving the cylinder body 31 toward the side where the mounted member 7 is located. During this process, due to the action of the elastic part 4, the position of the piston 32 is basically kept unchanged, the fluid medium in the buffer chamber B flows into the accommodating chamber A through the orifice, and when the cylinder body 31 moves to a predetermined position toward the side where the mounted member 7 is located, the piston 32 comes into contact with the bottom wall of the cylinder body 31, and the elastic part 4 is compressed and deformed.

[0047] The above is only a preferred embodiment of the present application, and those skilled in the art may make some improvements and modifications without departing from the principles of the present application, and these improvements and modifications should also fall within the protection scope of the present application. [Explanation of symbols]

[0048] 1 Mounting stand 11 Main unit 12...Oke body 121 ...position limiting member 2 Stopper cap 3. Buffer cylinder 31 Cylinder body 32 Piston 4. Elastic parts 5 Lock nut 6 Spacer 61 Relief hole 7. Mounting member 8. Stopped member A... Containment Room

Claims

1. A stopper device comprising a mounting base (1) and a stopper cap (2) made of a rubber material, the stopper cap (2) and the mounting base (1) being connected and surrounded to form a sealed storage chamber (A), the storage chamber (A) being filled with a fluid medium; The device further includes a buffer cylinder (3) and an elastic part (4) provided in the accommodation chamber (A), the buffer cylinder (3) includes a cylinder body (31) and a piston (32), the piston (32) is provided with an orifice, and the elastic part (4) is connected to the piston (32), one of the cylinder body (31) and the elastic part (4) is fixed to the stopper cap (2), and the other is fixed to the mounting base (1); The stopper device is characterized in that the mounting base (1) includes a main body (11) and a bucket body (12), the main body (11) is provided with a screw hole, the bucket body (12) includes a peripheral wall portion and a bottom wall portion, the peripheral wall portion is screwed into the screw hole, and the other of the cylinder main body (31) and the elastic part (4) is fixed to the bottom wall portion.

2. The stopper device according to claim 1, characterized in that a position limiting member (121) is provided on a portion of the peripheral wall portion located within the storage chamber (A), and the position limiting member (121) limits the position so as to engage with the main body (11).

3. The stopper device according to claim 1, further comprising a lock nut (5) fastened to the peripheral wall portion and abutting against one surface of the main body (11) facing away from the accommodation chamber (A).

4. 2. The stopper device according to claim 1, wherein the elastic part (4) is a spring, a part of which is located within the tub body (12) and abuts against the bottom wall portion.

5. The mounting base (1) is made of a metal material, and / or The stopper device according to any one of claims 1 to 4, characterized in that an inner wall surface of the stopper cap (2) is provided with a coating.

6. The stopper device according to any one of claims 1 to 4, further comprising a spacer (6) provided between the mounting base (1) and a workpiece (7).

7. 7. The stopper device according to claim 6, wherein the spacer (6) is made of a non-metallic material.

8. 7. The stopper device according to claim 6, wherein the spacer (6) is provided with a relief hole (61).

9. 5. The stopper device according to claim 1, wherein the fluid medium is at least one of a gaseous medium and a liquid medium.

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