Device for mounting piston sealing element of oil damper of bogie of railway vehicle

Abstract

The utility model discloses a device for installing a piston sealing element of a railway vehicle bogie oil damper. The device comprises an operation cylinder and a sealing element installation tool capable of being embedded into the operation cylinder. A through hole is formed in one end, matched with the sealing element mounting tool, of the operating cylinder, and the operating cylinder sleeves the sealing element mounting tool through the through hole; a plastic slip ring matching groove is formed in one end, close to the operating cylinder, of the sealing element mounting tool; an O-shaped ring groove is formed in one end, matched with the piston, of the sealing element mounting tool; the plastic slip ring matching groove is sleeved with a plastic slip ring, and the O-shaped ring groove is sleeved with an O-shaped ring. The device further comprises a pressure control sleeve. According to the device provided by the utility model, the operation cylinder, the sealing element mounting tool and the pressure control sleeve are coaxially matched, so that the mounting accuracy and reliability of the sealing element are improved, the mounting difficulty and cost are reduced, and meanwhile, the service life of the shock absorber is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of inspection, maintenance and installation of rail vehicle EMU components, in particular to a device for installing a piston seal of an oil pressure shock absorber of a rail vehicle bogie. Background Art

[0002] EMU anti-snaking shock absorbers are crucial components for ensuring safe and smooth operation. The hydraulic oil within the shock absorber generates a damping force during movement, with varying damping forces at different speeds. This damping force prevents vehicle body sway. Over time, seals and other components within the shock absorber wear out. To ensure long-term reliable performance, the shock absorber must be disassembled and the seals and hydraulic oil replaced during advanced EMU maintenance.

[0003] The shock absorber piston plastic slip ring is a crucial component for ensuring shock absorber function. Located on the outside of the piston, it maintains close contact with both the piston and the inner cylinder, forming a secure seal. During piston operation, it prevents hydraulic oil from passing through the gap between the piston and the inner cylinder, directing it into the pre-set valve system to exert its damping effect. The integrity of the piston plastic slip ring is essential for ensuring shock absorber performance.

[0004] When installing the piston plastic slip ring, it has an interference fit with the piston and is difficult to deform, which makes it difficult to install it directly. The current installation method is to use tools such as screwdrivers to open the plastic slip ring and then install it. This method has problems such as low efficiency and difficulty, and it is easy to cause damage to the plastic slip ring. On the one hand, obvious damage will lead to the scrapping of the material and increase costs. On the other hand, inconspicuous damage may not be detected and directly installed on the vehicle with the shock absorber, causing safety hazards.

[0005] Therefore, based on the above technical problems, technicians in this field urgently need to develop a device for installing a rail vehicle shock absorber piston seal. Utility Model Content

[0006] The purpose of the utility model is to provide a device for installing a piston seal of an oil pressure shock absorber of a rail vehicle bogie, which can effectively carry out construction progress, improve efficiency and ensure product quality.

[0007] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0008] The utility model discloses a device for installing a piston seal of an oil pressure shock absorber of a rail vehicle bogie, the device comprising:

[0009] operating cylinder; and

[0010] a seal installation tool capable of being inserted into the operating cylinder;

[0011] The operating cylinder has a through hole at one end that cooperates with the seal installation tool, and the operating cylinder is sleeved on the outside of the seal installation tool through the through hole;

[0012] The seal installation tool is provided with a plastic slip ring matching groove at one end close to the operating cylinder, and an O-ring groove at the end of the seal installation tool that matches the piston;

[0013] The plastic slip ring matching groove sleeve is provided with a plastic slip ring, and the O-ring groove sleeve is provided with an O-ring;

[0014] The device also includes:

[0015] pressure control sleeve;

[0016] The pressure control sleeve is coaxially arranged with the operating cylinder and the piston, and the operating cylinder can move along the axial direction of the pressure control sleeve to press the plastic sliding ring and the O-ring into corresponding positions of the piston respectively.

[0017] Furthermore, the operating cylinder is configured as a cylindrical structure;

[0018] The side of the operating cylinder that cooperates with the seal installation tool is provided with a plurality of operating cylinder parts that are spaced apart along the circumference of the operating cylinder;

[0019] A certain gap is reserved between adjacent operating cylinder parts, and the size of the opening at the connection position between the operating cylinder parts and the operating cylinder is larger than the distance between adjacent operating cylinder parts.

[0020] Furthermore, a receiving cavity is provided on one side of the pressure control sleeve that cooperates with the piston;

[0021] The piston is embedded in the accommodating cavity, and the end of the operating cylinder split body of the operating cylinder can be partially embedded in the gap between the piston and the pressure control sleeve.

[0022] Furthermore, the seal installation tool includes:

[0023] a mounting post and an O-ring mounting post protruding from the mounting post;

[0024] The plastic slip ring is sleeved on the mounting post, and the O-ring is sleeved on the O-ring mounting post.

[0025] In the above technical solution, the utility model provides a device for installing a piston seal of a rail vehicle bogie oil pressure shock absorber, which has the following beneficial effects:

[0026] The device of the utility model improves the accuracy and reliability of seal installation through the coaxial cooperation of the operating cylinder, the seal installation tool and the pressure control sleeve, reduces the installation difficulty and cost, and helps to extend the service life of the shock absorber. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0028] Figure 1 This is a schematic structural diagram of a device for installing a piston seal of an oil pressure shock absorber on a rail vehicle bogie disclosed in an embodiment of the utility model;

[0029] Figure 2 A schematic structural diagram of an operating cylinder of a device for installing a piston seal of an oil pressure shock absorber on a rail vehicle bogie disclosed in an embodiment of the utility model;

[0030] Figure 3 The present invention is a schematic structural diagram of a seal installation tool for a device for installing a piston seal of a rail vehicle bogie oil pressure shock absorber disclosed in an embodiment of the present invention.

[0031] Description of reference numerals:

[0032] 1. Piston; 2. Seal installation tool; 3. Plastic slip ring; 4. Operating cylinder; 5. Pressure control sleeve;

[0033] 401, operating cylinder split;

[0034] 201. Mounting column; 202. O-ring mounting column. DETAILED DESCRIPTION

[0035] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0036] See also Figures 1 to 3 As shown;

[0037] A device for installing a piston seal of an oil pressure shock absorber of a railway vehicle bogie according to this embodiment includes:

[0038] operating cylinder 4; and

[0039] A seal installation tool 2 capable of being inserted into an operating cylinder 4;

[0040] The operating cylinder 4 has a through hole at one end that cooperates with the seal installation tool 2, and the operating cylinder 4 is sleeved on the outside of the seal installation tool 2 through the through hole;

[0041] The end of the seal installation tool 2 close to the operating cylinder 4 is provided with a plastic slip ring matching groove, and the end of the seal installation tool 2 that matches the piston 1 is provided with an O-ring groove;

[0042] The plastic slip ring matching groove sleeve is provided with a plastic slip ring 3, and the O-ring groove sleeve is provided with an O-ring;

[0043] The device also includes:

[0044] Pressure control sleeve 5;

[0045] The pressure control sleeve 5 is coaxially arranged with the operating cylinder 4 and the piston 1 , and the operating cylinder 4 can move axially along the pressure control sleeve 5 to press the plastic sliding ring 3 and the O-ring into corresponding positions of the piston 1 .

[0046] Specifically, this embodiment discloses a device for installing a seal for a rail vehicle bogie hydraulic shock absorber piston, which is mainly divided into three parts: an operating cylinder 4, a seal installation tool 2, and a pressure control sleeve 5; the plastic slip ring 3 and the O-ring to be mounted on the piston 1 are respectively installed in the specified positions of the seal installation tool 2, and then the operating cylinder 4 and the pressure control sleeve 5 are coaxially arranged. When the operating cylinder 4 is used in conjunction with the piston 1, the plastic slip ring 3 and the O-ring can be respectively installed in the specified positions of the piston 1 using the operating cylinder 4. This device can improve installation efficiency without damaging components, thereby ensuring product quality.

[0047] Preferably, the operating cylinder 4 of this embodiment is configured as a cylindrical structure; specifically, the operating cylinder 4 of this embodiment is provided with a plurality of operating cylinder segments 401 distributed along the circumference of the operating cylinder 4 on one side thereof that cooperates with the seal installation tool 2; wherein a certain gap is reserved between adjacent operating cylinder segments 401, and the opening size of the connection position between the operating cylinder segments 401 and the operating cylinder 4 is larger than the spacing between adjacent operating cylinder segments 401.

[0048] Preferably, the pressure control sleeve 5 of this embodiment is provided with an accommodating cavity on one side where it cooperates with the piston 1;

[0049] The piston 1 is embedded in the accommodating cavity, and the end of the operating cylinder split body 401 of the operating cylinder 4 can be partially embedded in the gap between the piston 1 and the pressure control sleeve 5 .

[0050] In order to set the plastic slip ring 3 and the O-ring on the seal installation tool 2 and to match them with the corresponding positions of the piston 1, so as to ensure that the plastic slip ring 3 and the O-ring can be respectively installed on the seal installation tool 2 through the operating cylinder 4 and the pressure control sleeve 5, the following steps are included:

[0051] A mounting post 201 and an O-ring mounting post 202 protruding from the mounting post 201;

[0052] The plastic slip ring 3 is sleeved on the mounting post 201 , and the O-ring is sleeved on the O-ring mounting post 202 .

[0053] When in use, first fix the piston 1 of the shock absorber to the designated position of the operating cylinder 4, then put the O-ring into the O-ring groove of the seal installation tool 2, and put the plastic slip ring 3 into the corresponding plastic slip ring matching groove, and then apply appropriate pressure through the pressure control sleeve 5 and the operating cylinder 4 to drive the O-ring and the plastic slip ring 3 to be accurately installed on the piston 1 of the shock absorber.

[0054] In the above technical solution, the utility model provides a device for installing a piston seal of a rail vehicle bogie oil pressure shock absorber, which has the following beneficial effects:

[0055] The device of the utility model improves the accuracy and reliability of seal installation through the coaxial cooperation of the operating cylinder 4, the seal installation tool 2 and the pressure control sleeve 5, reduces the installation difficulty and cost, and helps to extend the service life of the shock absorber.

[0056] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A device for installing a piston seal of an oil pressure shock absorber of a railway vehicle bogie, characterized in that: The device includes: an operating cylinder (4); and a seal installation tool (2) capable of being embedded in the operating cylinder (4); The operating cylinder (4) has a through hole at one end that cooperates with the sealing component installation tool (2), and the operating cylinder (4) is sleeved on the outside of the sealing component installation tool (2) through the through hole; The sealing component installation tool (2) is provided with a plastic sliding ring matching groove at one end close to the operating cylinder (4), and the sealing component installation tool (2) is provided with an O-ring groove at one end matching with the piston (1); The plastic slip ring matching groove sleeve is provided with a plastic slip ring (3), and the O-ring groove sleeve is provided with an O-ring; The device also includes: Pressure control sleeve (5); The pressure control sleeve (5) is coaxially arranged with the operating cylinder (4) and the piston (1), and the operating cylinder (4) can move along the axial direction of the pressure control sleeve (5) to press the plastic sliding ring (3) and the O-ring into corresponding positions of the piston (1) respectively.

2. The device for installing a piston seal of a rail vehicle bogie oil pressure shock absorber according to claim 1, characterized in that: The operating cylinder (4) is configured as a cylindrical structure; The side where the operating cylinder (4) cooperates with the sealing component installation tool (2) is provided with a plurality of operating cylinder split bodies (401) distributed at intervals along the circumference of the operating cylinder (4); A certain gap is reserved between adjacent operating cylinder parts (401), and the opening size of the connection position between the operating cylinder parts (401) and the operating cylinder (4) is larger than the spacing between adjacent operating cylinder parts (401).

3. The device for installing a piston seal of a rail vehicle bogie oil pressure shock absorber according to claim 1, characterized in that: The pressure control sleeve (5) is provided with an accommodating cavity on one side where it cooperates with the piston (1); The piston (1) is embedded in the accommodating cavity, and the end of the operating cylinder split body (401) of the operating cylinder (4) can be partially embedded in the gap between the piston (1) and the pressure control sleeve (5).

4. The device for installing a piston seal of a rail vehicle bogie oil pressure shock absorber according to claim 1, characterized in that: The seal installation tool (2) comprises: A mounting post (201) and an O-ring mounting post (202) protruding from the mounting post (201); The plastic slip ring (3) is sleeved on the mounting column (201), and the O-ring is sleeved on the O-ring mounting column (202).

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