Disassembling and assembling tool assembly for brake cylinder pull rod hinge pin and pressing ring

Abstract

The utility model provides a brake cylinder pull rod hinge pin and hold-down ring dismounting tool assembly which comprises a pull rod fixing tool, a hold-down ring dismounting tool, a hinge pin mounting tool and a hinge pin parallel tool, the pull rod fixing tool is used for supporting a pull rod, and the hold-down ring dismounting tool is used for withdrawing a hold-down ring and a hinge pin. One end of the hinge pin installation tool is connected with the press machine and used for pressing a hinge pin into a hinge pin installation hole of the pull rod, and the hinge pin parallel tool is used for enabling the hinge pin and the pull rod to be always kept parallel when the hinge pin is installed. The tool is simple in structure, a plurality of tools are used in a combined mode, the hinge pin and the pressing ring can be rapidly assembled and disassembled, time and labor are saved, working efficiency is improved, and the tool has high practical value.

Description

Technical Field

[0001] This utility model relates to the field of brake cylinder assembly technology, specifically a tool assembly for disassembling and assembling brake cylinder tie rod hinge pin and clamping ring. Background Technology

[0002] The braking system of subway vehicles is particularly important, and the brake cylinder is a crucial component for achieving braking function. During major overhauls of subway vehicle frames, a comprehensive disassembly and inspection of the brake cylinder is required. One of the tasks is replacing the brake cylinder tie rod hinge pin and clamping ring. The hinge pin is fixed inside the tie rod by the clamping ring, and the mounting holes at both ends of the hinge pin are bolted to the frame, thus supporting the unit brake cylinder. Hinge pin installation requirements: After press-fitting, the bulge must not exceed 2mm, the symmetry must not exceed 0.6mm, and the parallelism must not exceed 1°.

[0003] Currently, the following problems exist in the disassembly and assembly of brake cylinder hinge pins and clamping rings:

[0004] (1) The tie rod cannot be stably supported, which means it cannot be in a horizontal position;

[0005] (2) When the hinge pin at the connection between the tie rod and the frame is installed, it cannot be guaranteed that the hinge pin will always be in a horizontal position during the compression process.

[0006] (3) When the clamping ring is installed, it is not possible to accurately compress the clamping ring in the horizontal position inside the tie rod, which may result in excessive compression and failure to meet the process standards.

[0007] (4) The lack of special disassembly and assembly tools during the operation process affects the entire brake cylinder repair process, which in turn affects the production progress of the frame overhaul. Utility Model Content

[0008] To address the shortcomings of the existing technology, this utility model provides a tool assembly for disassembling and assembling the brake cylinder tie rod hinge pin and clamping ring. This assembly solves the problems of difficult disassembly and assembly of the caliper brake unit hinge pin and clamping ring, which can easily cause equipment damage and low work efficiency. It also reduces the damage rate of spare parts during installation and improves production efficiency.

[0009] The technical solution provided by this utility model is as follows: a tool assembly for disassembling and assembling a brake cylinder tie rod hinge pin and a clamping ring, including a tie rod fixing fixture, a clamping ring disassembly and assembly fixture, a hinge pin installation fixture, and a hinge pin parallel fixture. The tie rod fixing fixture is used to support the tie rod, the clamping ring disassembly and assembly fixture is used to remove the clamping ring and the hinge pin, one end of the hinge pin installation fixture is connected to a press machine and is used to press the hinge pin into the hinge pin installation hole of the tie rod, and the hinge pin parallel fixture is used to keep the hinge pin and the tie rod in a parallel position at all times when installing the hinge pin.

[0010] Furthermore, the tie rod fixing fixture includes a base plate and a support sleeve disposed in the middle of the base plate. In use, the support sleeve is placed below the hinge pin mounting hole of the tie rod.

[0011] Furthermore, the clamping ring disassembly and assembly fixture includes an upper sleeve and a lower sleeve. The top of the upper sleeve is open. In use, the bottom of the lower sleeve is in contact with the press. The pressure generated by the press pushes the clamping ring and hinge pin out of the hinge pin mounting hole of the pull rod through the upper sleeve.

[0012] Furthermore, the hinge pin mounting fixture includes a support rod and fixing blocks disposed at both ends of the support rod, one of the fixing blocks being provided with a cylindrical connector for connection with a press.

[0013] Furthermore, the hinge pin parallel fixture includes a fixing rod for inserting into the pull rod connection hole, one end of the fixing rod is vertically fixed with an adjusting rod, and the end of the adjusting rod is provided with an insertion hole that matches the connecting blocks at both ends of the hinge pin.

[0014] Furthermore, the socket is rectangular.

[0015] The beneficial effects of this utility model are:

[0016] ① Effectively solves the problem of difficult disassembly and installation of hinge pins;

[0017] ②This makes the entire disassembly and assembly process safer, more standardized, and more reliable;

[0018] ③ It reduces mechanical damage to tie rods, hinge pins, and clamping rings;

[0019] ④ This greatly reduces the time required to disassemble and assemble hinge pins, thus improving production efficiency;

[0020] ⑤ It has a simple and practical structure, low cost, and is easy to promote. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the tie rod fixing fixture of this utility model;

[0022] Figure 2 This is a structural schematic diagram of the clamping ring assembly / disassembly fixture of this utility model;

[0023] Figure 3 This is a structural schematic diagram of the hinge pin installation fixture of this utility model;

[0024] Figure 4 This is a schematic diagram of the hinge pin parallel tooling of this utility model;

[0025] Figure 5 This is a schematic diagram of the clamp braking unit pull rod;

[0026] Figure 6 This is a schematic diagram of the structure for installing the hinge pin and clamping ring according to this utility model;

[0027] In the diagram: 1—Pull rod fixing fixture, 101—Base plate, 102—Support sleeve, 2—Pressure ring disassembly and assembly fixture, 201—Upper sleeve, 202—Lower sleeve, 3—Hinge pin installation fixture, 301—Support rod, 302—Fixing block, 303—Cylindrical joint, 4—Hinge pin parallel fixture, 401—Fixing rod, 402—Adjusting rod, 403—Insertion hole, 5—Pull rod, 6—Hinge pin, 7—Pressure ring. Detailed Implementation

[0028] The present invention will be further described below with reference to specific embodiments. The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures. They should not be construed as limiting the present invention. In order to better illustrate the specific embodiments of the present invention, some parts in the drawings may be omitted, enlarged or reduced, and do not represent the actual product size. It is understandable for those skilled in the art that some well-known structures and their descriptions in the drawings may be omitted. Based on the specific embodiments of the present invention, all other specific embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] In the description of this utility model, it should be noted that the terms "front", "rear", "upper", "lower", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] like Figure 1-6The invention relates to a tool assembly for disassembling and assembling a brake cylinder tie rod hinge pin and clamping ring, comprising a tie rod fixing fixture 1, a clamping ring disassembly and assembly fixture 2, a hinge pin installation fixture 3, and a hinge pin parallel fixture 4. The tie rod fixing fixture 1 supports the tie rod 5, the clamping ring disassembly and assembly fixture 2 is used to remove the clamping ring 7 and the hinge pin 6, one end of the hinge pin installation fixture 3 is connected to a press and is used to press the hinge pin 6 into the hinge pin installation hole of the tie rod 5, and the hinge pin parallel fixture 4 is used to keep the hinge pin 6 and the tie rod 5 in a parallel position during the installation of the hinge pin 6.

[0032] like Figure 1 As shown, the tie rod fixing fixture 1 includes a base plate 101 and a support sleeve 102 disposed in the middle of the base plate 101. In use, the support sleeve 102 is placed below the hinge pin mounting hole of the tie rod 5.

[0033] like Figure 2 As shown, the clamping ring disassembly and assembly fixture 2 includes an upper sleeve 201 and a lower sleeve 202. The top of the upper sleeve 201 is open. In use, the bottom of the lower sleeve 202 is in contact with the press. The pressure generated by the press is passed through the upper sleeve 201 to press the clamping ring and hinge pin out of the hinge pin mounting hole of the pull rod 5.

[0034] like Figure 3 As shown, the hinge pin mounting fixture 3 includes a support rod 301 and fixing blocks 302 disposed at both ends of the support rod 301, wherein a cylindrical connector 303 for connecting to a press is disposed on one of the fixing blocks 302.

[0035] like Figure 4 As shown, the hinge pin parallel fixture 4 includes a fixing rod 401 for inserting into the pull rod connecting hole. One end of the fixing rod 401 is vertically fixed with an adjusting rod 402. The end of the adjusting rod 402 is provided with an insertion hole 403 that matches the connecting blocks at both ends of the hinge pin.

[0036] In a specific embodiment, by measuring the inner and outer diameters of the brake cylinder tie rod hinge pin clamping ring and the outer diameter of its mounting surface (45mm, 55mm, and 71mm respectively), a circular fixture with a diameter larger than the clamping ring and an outer diameter smaller than the mounting surface diameter is manufactured. The lower part of the hinge pin is supported on the press table to keep the hinge pin balanced during disassembly and assembly. The support sleeve 102 of the tie rod fixing fixture 1 has an outer diameter of 71mm and an inner diameter of 61mm. At the same time, a hinge pin mounting fixture 3 is manufactured to fix the hinge pin. The top of the hinge pin mounting fixture 3 is connected to the press through a cylinder with a diameter of 24.4mm, and the bottom is in contact with the upper surface of the hinge pin through a plane with a diameter of 60mm.

[0037] The outer diameter of the upper sleeve of the clamping ring assembly / disassembly fixture 2 is 53mm, the inner diameter is 38mm, and the height is 90mm. The outer diameter of the lower sleeve 202 is larger than that of the upper sleeve 201, and the height of the lower sleeve 202 is 120mm. The length of the fixing rod 401 of the hinge pin parallel fixture 4 is 400mm, the length of the adjusting rod 402 is 200mm, and the width of the insertion hole 403 is 16.5mm.

[0038] In practical use, this utility model includes two processes: disassembly and installation.

[0039] Disassembly: During disassembly, the fixture is fixed by a tie rod. Figure 1 Planar positioning balances the pull rod, and a clamping ring assembly / disassembly tool with a diameter between the inner and outer diameters of the clamping ring is used on its upper part. Figure 2 The hinge pin and the clamping ring are pressed out of the hinge pin mounting hole of the pull rod 5 by the action of the press machine on the clamping ring disassembly and assembly tool.

[0040] During installation, such as Figure 6 As shown, it includes the following steps:

[0041] ① During installation, apply an appropriate amount of petroleum jelly to the rubber components of the hinge pin for lubrication to reduce friction between the hinge pin and the contact surface of the pull rod. Use the pull rod to fix the fixture. Figure 1 Fix the tie rod to the press table and keep it horizontal;

[0042] ② Use hinge pins to parallel tooling ( Figure 4 This ensures that the hinge pin remains horizontal with the tie rod throughout the installation process. The tooling is then installed using the hinge pin. Figure 3 Connect the fixed press and the hinge pin. After fixing, use the press to press the hinge pin into the appropriate position. The error angle meets the standard range and makes it parallel to the upper and lower planes of the pull rod.

[0043] ③ Use clamping rings to disassemble and assemble the tooling ( Figure 2 Press the clamping rings into the mounting holes at both ends in opposite directions. The clamping rings should be flush with the plane of the mounting holes on the tie rods. The error on both sides of the hinge pins should meet the standard range. The entire installation process is now complete.

[0044] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A tool assembly for disassembling and assembling a brake cylinder tie rod hinge pin and clamping ring, characterized in that, The device comprises a pull rod fixing tool (1), a compression ring dismounting tool (2), a hinge pin installing tool (3) and a hinge pin parallel tool (4), the pull rod fixing tool (1) is used for supporting a pull rod (5), the compression ring dismounting tool (2) is used for removing a compression ring and a hinge pin, one end of the hinge pin installing tool (3) is connected with a press machine, and the hinge pin installing tool (3) is used for pressing the hinge pin into a hinge pin installing hole of the pull rod, the hinge pin parallel tool (4) is used for keeping the hinge pin and the pull rod in parallel position during installation of the hinge pin.

2. A brake cylinder lever hinge pin and compression ring removal tool assembly as defined in Claim 1, wherein, The pull rod fixing tool (1) comprises a bottom plate (101) and a supporting sleeve (102) arranged in the middle of the bottom plate (101), and the supporting sleeve (102) is placed below a hinge pin installing hole of the pull rod (5) during use.

3. A brake cylinder lever hinge pin and compression ring installation and removal tool assembly as defined in Claim 1, wherein, The compression ring dismounting tool (2) comprises an upper sleeve (201) and a lower sleeve (202), the top of the upper sleeve (201) is open, the bottom of the lower sleeve (202) is in contact with the press machine during use, and the pressure generated by the press machine is used to press the compression ring and the hinge pin out of the hinge pin installing hole of the pull rod (5) through the upper sleeve (201).

4. A brake cylinder lever hinge pin and compression ring installation and removal tool assembly as defined in Claim 1, wherein, The hinge pin installing tool (3) comprises a supporting rod (301) and fixing blocks (302) arranged at two ends of the supporting rod (301), and a cylindrical joint (303) for connecting with the press machine is arranged on one of the fixing blocks (302).

5. A brake cylinder lever hinge pin and compression ring installation and removal tool assembly as defined in Claim 1, wherein, The hinge pin parallel tool (4) comprises a fixing rod (401) for being inserted into a connecting hole of the pull rod, one end of the fixing rod (401) is vertically fixed with an adjusting rod (402), and a plug hole (403) matched with a connecting block at two ends of the hinge pin is formed at the end of the adjusting rod (402).

6. A brake cylinder pull rod hinge pin and compression ring installation and removal tool assembly as defined in Claim 5, wherein, The plug hole (403) is rectangular.

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