Brake shoe dismounting tool

Abstract

The utility model relates to the field of rail train maintenance, in particular to a brake shoe dismounting tool which comprises a hook, a pull rod and a pinch bar. The non-hook end of the hook is connected with one end of the pull rod, the other end of the pull rod is connected with one end of the pinch bar, and the other end of the pinch bar is provided with a clamping groove. According to the utility model, the hook part of the hook can be hung into the head part of the bolt in the brake shoe device, and then the bolt is pulled out of the brake shoe device by pulling the pull rod. In addition, the clamping groove at the end part of the pinch bar can be clamped into one end of the cotter pin in the brake shoe device, and the cotter pin can be easily pried and disassembled through a long rod formed by the pull rod and the pinch bar under the action of a lever. According to the brake shoe dismantling device, the brake shoe is dismantled through the operation. The tool has the advantages of being simple in structure and convenient to use, can be used for rapidly and efficiently disassembling the metro vehicle brake shoe, reduces carried tools and instruments, reduces the disassembling difficulty of the brake shoe, and finally improves the field operation efficiency.

Description

Technical Field

[0001] This utility model relates to the field of rail train maintenance, specifically to a brake shoe disassembly tool. Background Technology

[0002] During subway vehicle maintenance, if the brake shoes in the braking system show signs of wear to the limit or damage, they need to be replaced. Currently, brake shoes are mainly disassembled using a combination of tools such as pry bars, screwdrivers, and wire cutters. The entire disassembly process is cumbersome, labor-intensive, difficult, and carries high safety risks. Utility Model Content

[0003] In view of this, the present invention provides a brake shoe disassembly tool, which aims to reduce the difficulty of disassembling brake shoes.

[0004] To solve the above technical problems, the technical solution adopted by this utility model is as follows:

[0005] A brake shoe removal tool includes a hook, a pull rod, and a pry bar; the non-hooked end of the hook is connected to one end of the pull rod, the other end of the pull rod is connected to one end of the pry bar, and the other end of the pry bar has a groove.

[0006] In some alternative embodiments, a pull hammer is slidably sleeved on the pull rod; the section of the pull rod away from the hook has an impact seat.

[0007] In some alternative embodiments, the end of the pry bar away from the pull rod has a beveled surface, and the slot is provided on the beveled surface.

[0008] In some alternative embodiments, the beveled surface has an angle of 10° to 70° with the axis of the pry bar.

[0009] In some alternative embodiments, the angle between the beveled surface and the axis of the pry bar is 35°.

[0010] In some alternative embodiments, the non-hooked end of the hook is hinged to the end of the pull rod.

[0011] In some alternative embodiments, the end of the pull rod away from the pry bar is connected to a hinge seat, the hinge seat having a connecting ring; the non-hooked end of the hook is hinged to the connecting ring.

[0012] In some alternative implementations, the pry bar is detachably connected to the end of the pull rod.

[0013] In some alternative implementations, the pry bar is screwed to the end of the pull rod.

[0014] In some alternative embodiments, the pull rod and the pry bar are arranged at an angle or coaxially.

[0015] In summary, compared with the prior art, this utility model has the following advantages and beneficial effects: This utility model allows the hook to be inserted into the head of the pin in the brake shoe assembly, and then the pin can be pulled out of the brake shoe assembly by pulling the lever. Alternatively, the slot at the end of the pry bar can be inserted into one end of the cotter pin in the brake shoe assembly, and the cotter pin can be easily pried off using the leverage effect of the long rod formed by the lever and pry bar. This utility model achieves the removal of the brake shoe through the above operations. This utility model is characterized by its simple structure and ease of use, and can be used for the quick and efficient removal of brake shoes from subway vehicles, reducing the tools and equipment required, lowering the difficulty of brake shoe removal, and ultimately improving on-site work efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] The labels in the diagram are as follows: Hook 1, Hinge 2, Pull rod 3, Pull hammer 4, Impact seat 5, Pry bar 6, Slot 7. Detailed Implementation

[0018] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to specific embodiments.

[0019] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional 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.

[0020] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," "exceeding," etc. are understood to exclude the stated number, while "above," "below," "within," etc. are understood to include the stated number. If terms such as "first," "second," etc., are used only to distinguish technical features and should not be construed as indicating or implying relative importance, or implicitly specifying the number of indicated technical features, or implicitly specifying the order of the indicated technical features.

[0021] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0022] like Figure 1 As shown, the brake shoe disassembly tool of this utility model mainly includes a hook 1, a pull rod 3, and a pry bar 6.

[0023] The non-hook end of the hook 1 is connected to one end of the pull rod 3, and the other end of the pull rod 3 is connected to one end of the pry bar 6. The other end of the pry bar 6 has a groove 7.

[0024] by Figure 1 Taking the structure shown as an example, the left end of hook 1 has a hook portion, and the right end is a non-hook portion. The right end of hook 1 is connected to the left end of pull rod 3, and the right end of pull rod 3 is connected to the left end of pry bar 6. The right end of pry bar 6 has a slot 7.

[0025] This invention allows the hook 1 to be engaged with the head of the pin in the brake shoe assembly, and then the pin can be pulled out of the brake shoe assembly by pulling the lever 3. Alternatively, the slot 7 at the end of the pry bar 6 can be engaged with one end of the cotter pin in the brake shoe assembly, and the cotter pin can be easily pried off by leveraging the long rod formed by the lever 3 and the pry bar 6. This invention achieves the removal of the brake shoe through the above operations. This invention is characterized by its simple structure and ease of use, and can be used to quickly and efficiently disassemble brake shoes of subway vehicles, reducing the tools and equipment required, lowering the difficulty of brake shoe disassembly, and ultimately improving on-site work efficiency.

[0026] As an optional implementation, a pull hammer 4 can be slidably sleeved on the pull rod 3, and the section of the pull rod 3 away from the hook 1 has an impact seat 5. Figure 1 Taking the structure shown as an example, the right half of the pull rod 3 is preferably connected to an impact seat 5 by a fixed connection method such as welding, screwing, or snap-fit. The pull hammer 4 is preferably made of solid metal with a through hole in the middle. The through hole is slightly larger than the diameter of the pull rod 3 and smaller than the maximum width of the impact seat 5, so that the pull hammer 4 can slide smoothly left and right on the pull rod 3 and can impact the impact seat 5.

[0027] The advantage of setting up the pull hammer 4 and the impact seat 5 is that when the pin is pulled out by the hook 1, the pull hammer 4 can strike the impact seat 5, thereby making it easier to pull the pin out of the brake shoe device through the inertial impact force generated by the collision, thus making the whole operation more convenient and labor-saving.

[0028] The non-hooked end (i.e., the right end) of the hook 1 can be hinged to the left end of the pull rod 3, so that the posture of the hook 1 can be adjusted at will to make it suitable for pulling at different angles. The hook 1 can also be folded to fit snugly against the pull rod 3 when no tools are used, for easy storage and transportation.

[0029] As an optional implementation, the end of the pull rod 3 furthest from the pry bar 6 (i.e., the left end) is connected to a hinge seat 2, which has a connecting ring. The non-hooked end (i.e., the right end) of the hook 1 is hinged to this connecting ring. For example, the hinge seat 2 can be a structure similar to an eye bolt, with a ring at one end and a threaded connection at the other end for connection to a pre-machined threaded structure on the left end of the pull rod 3. The hook 1 can be made of a metal rod, and the right end of the hook 1 can be bent back after passing through the connecting ring to prevent it from falling off the connecting ring.

[0030] Meanwhile, the hinge seat 2 can also act as a left limiter for the pull hammer 4, so that the sliding range of the pull hammer 4 on the pull rod 3 is limited between the hinge seat 2 and the impact seat 5.

[0031] The pull rod 3 and the pry bar 6 are arranged at an angle or coaxially. For example, the pull rod 3 and the pry bar 6 can be arranged at an angle of 0° (in which case the pull rod 3 and the pry bar 6 are coaxially arranged), 15°, 30°, 45°, 60° or 90°, so that it can be used for prying and dismantling at different angles.

[0032] The pry bar 6 can be made of a solid metal cylinder to ensure structural strength. Since the main purpose of the pry bar 6 is to pry open cotter pins, which generally do not require a lot of force, the pry bar 6 can also be made of a hollow metal tube to make the entire tool lighter and easier to use.

[0033] Correspondingly, the pull rod 3 can also be made of a solid metal cylinder to ensure structural strength. Alternatively, it can be made of a hollow metal tube to make the entire tool lighter and easier to use.

[0034] The pry bar 6 and the pull rod 3 can be connected by a detachable connection method such as screw connection. When the tool is not in use, the pry bar 6 can be removed for easy storage and transportation. After the cotter pin is pried off, the pry bar 6 can also be removed to reduce the weight of the entire tool, making it lighter and easier to use in the future.

[0035] Additionally, to facilitate easier insertion of the pry bar 6 into the cotter pin, as an optional implementation, the end of the pry bar 6 away from the pull rod 3 (i.e., the right end) has a beveled surface, and the slot 7 is provided on this beveled surface. This design gives the right end of the pry bar 6 a thinner tip, making it easier to pry open or remove the cotter pin, for example, by inserting it into narrow gaps or cotter pins.

[0036] The angle between the beveled surface and the axis of the pry bar 6 can be selected from 10° to 70°. Calculation and actual use have shown that when the angle between the beveled surface and the axis of the pry bar 6 is about 35°, the prying effect is better. It is easy to get it into the gap or cotter pin, and the structural strength of the slot 7 can be guaranteed.

[0037] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0038] The above preferred embodiments should not be considered as limitations on this utility model, and the scope of protection of this utility model should be determined by the scope defined in the claims. For those skilled in the art, several improvements and modifications can be made without departing from the spirit and scope of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.

Claims

1. A shoe puller characterized by: The utility model relates to a kind of hooking (1), pull rod (3) and crowbar (6);The non-hooking end of the hooking (1) is connected with one end of the pull rod (3), the other end of the pull rod (3) is connected with one end of the crowbar (6), and the other end of the crowbar (6) has a clamping slot (7).

2. A tool as claimed in claim 1, characterised in that: Pull hammer (4) is sleeved on the pull rod (3) and slides;The pull rod (3) has impact seat (5) away from hooking (1).

3. A tool as claimed in claim 1, wherein: The end of the crowbar (6) away from the pull rod (3) has bevel surface, and the clamping slot (7) is arranged on the bevel surface.

4. A tool as claimed in claim 3, wherein: The included angle between the bevel surface and the axis of the crowbar (6) is 10°-70°.

5. A tool as claimed in claim 4, wherein: The included angle between the bevel surface and the axis of the crowbar (6) is 35°.

6. A tool as claimed in claim 1, wherein: The non-hooking end of the hooking (1) is hinged to the end of the pull rod (3).

7. A tool as claimed in claim 6, wherein: The end of the pull rod (3) away from the crowbar (6) is connected with hinged seat (2), and the hinged seat (2) has connecting ring;The non-hooking end of the hooking (1) is hinged to the connecting ring.

8. A tool as claimed in claim 1, wherein: The crowbar (6) is detachably connected to the end of the pull rod (3).

9. A tool as claimed in claim 8, wherein: The crowbar (6) is screwed to the end of the pull rod (3).

10. A tool as claimed in claim 1, characterised in that: The pull rod (3) and the crowbar (6) are arranged at an angle or coaxially.

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