Dismounting and positioning tool for chain

Abstract

The utility model discloses a disassembly positioning tool for a chain, which comprises a positioning frame, the positioning frame comprises a positioning block, the positioning block is provided with an upper surface and a lower surface which are opposite to each other, the upper surface is sunken downwards to form a plurality of first positioning holes and a plurality of second positioning holes, and the first positioning holes and the second positioning holes are communicated with each other. The plurality of first positioning holes and the plurality of second positioning holes are arranged in a one-to-one staggered manner; wherein the inner diameter of the first positioning hole is larger than that of the second positioning hole, the end part of the first pin shaft can at least partially extend into the first positioning hole, and the end part of the second pin shaft can at least partially extend into the second positioning hole. According to the utility model, the end part of the first pin shaft extends into the first positioning hole, and the end part of the second pin shaft extends into the second positioning hole, so that the positions of the first pin shaft and the second pin shaft can be locked so as to lock the rotation between chain links, and the overall positioning of the chain is realized through the first positioning hole and the second positioning hole of the positioning block.

Description

Technical Field

[0001] The utility model relates to the technical field of chains, in particular to a disassembly and positioning tool for chains. Background Art

[0002] Chains are common transmission and traction devices, widely used in bicycles, motorcycles, conveyors, lifting equipment, and other fields. Chains are typically composed of multiple links, each of which is made up of several parts, including bushings, chain plates, and pins.

[0003] As the chain gets older, dirt and other impurities accumulate between the parts, and the parts wear out. Therefore, the chain needs to be disassembled, cleaned, and repaired regularly.

[0004] Then, due to the rotatable connection between each link, the chain cannot be installed on the tooling in a fixed shape for disassembly. The chain cannot be fixed during disassembly, which brings great trouble to the maintenance of the chain. Summary of the Invention

[0005] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is to propose a disassembly and positioning tool for a chain, so as to solve the problem in the prior art that the chain cannot be fixed, resulting in troublesome disassembly.

[0006] The technical solution adopted by the utility model to solve its technical problem is a disassembly and positioning tool for a chain, wherein the chain includes a plurality of sleeves, a plurality of first pins and a plurality of second pins, two adjacent sleeves are connected by an inner link plate or an outer link plate, a plurality of the first pins and a plurality of the second pins are staggered one by one in the sleeves, an outer diameter of an end portion of the first pin is larger than an outer diameter of an end portion of the second pin, and the disassembly and positioning tool includes:

[0007] A positioning frame, the positioning frame including a positioning block, the positioning block having an upper surface and a lower surface opposite to each other, the upper surface being recessed downward to form a plurality of first positioning holes and a plurality of second positioning holes, wherein the plurality of first positioning holes and the plurality of second positioning holes are staggered one by one;

[0008] The inner diameter of the first positioning hole is larger than that of the second positioning hole, the end of the first pin shaft can at least partially extend into the first positioning hole, and the end of the second pin shaft can at least partially extend into the second positioning hole.

[0009] Furthermore, when the end of the first pin shaft extends into the first positioning hole and the second pin shaft extends into the second positioning hole, the plurality of outer link plates fit into the upper surface of the positioning block.

[0010] Furthermore, the inner diameter of the first positioning hole is greater than or equal to the outer diameter of the end portion of the first pin shaft.

[0011] Furthermore, the inner diameter of the second positioning hole is greater than or equal to the outer diameter of the end portion of the second pin shaft.

[0012] Furthermore, the positioning frame further includes two support columns, and the two support columns are respectively fixed to two ends of the positioning block.

[0013] Furthermore, the positioning frame further includes two support plates, which are arranged in the middle of the positioning block and are respectively located on opposite sides of the positioning block.

[0014] Furthermore, a plurality of storage spaces are provided below the positioning block.

[0015] Furthermore, a storage box is placed in the storage space.

[0016] Furthermore, the first positioning hole passes through the upper surface and the lower surface of the positioning block.

[0017] Furthermore, the second positioning hole passes through the upper surface and the lower surface of the positioning block.

[0018] Compared with the prior art, the present invention has at least the following beneficial effects:

[0019] (1) A plurality of first positioning holes and a plurality of second positioning holes are provided on the positioning block, and the plurality of first positioning holes and the plurality of second positioning holes are arranged in an alternating manner. The chain is placed on the positioning block and the end of the first pin is inserted into the first positioning hole, and the end of the second pin is inserted into the second positioning hole, so as to lock the positions of the first pin and the second pin, and lock the rotation between the chain links, so as to realize the overall positioning of the chain through the first positioning hole and the second positioning hole of the positioning block.

[0020] (2) Support columns and support plates are provided to support the positioning block and raise the height of the positioning block, so that a storage space is formed below the positioning block. A storage box is placed in the storage space to receive the disassembled parts.

[0021] (3) The first positioning hole and the second positioning hole both pass through the upper surface and the lower surface of the positioning block, that is, the first positioning hole and the second positioning hole are both through holes. After the fixing nuts of the first pin shaft and the second pin shaft are removed, the first pin shaft and the second pin shaft are detached from the sleeve where they are located, and fall into the storage box below through the first positioning hole and the second positioning hole under the action of their own gravity, thereby realizing automatic storage of parts and improving the convenience of chain maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1Schematic diagram of the structure of the positioning frame and the chain in the embodiment;

[0023] Figure 2 This is a schematic structural diagram of the positioning frame in the embodiment;

[0024] Figure 3 This is a schematic structural diagram of a chain in an embodiment;

[0025] In the picture:

[0026] 100, positioning frame; 110, positioning block; 111, first positioning hole; 112, second positioning hole; 120, support column; 130, support plate; 140, storage space;

[0027] 200, chain; 210, first pin; 220, second pin; 230, sleeve; 240, inner link plate; 250, outer link plate. DETAILED DESCRIPTION

[0028] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0029] Please refer to Figure 1-Figure 3 The utility model discloses a disassembly and positioning tool for a chain, wherein the chain 200 includes a plurality of sleeves 230, a plurality of first pins 210, and a plurality of second pins 220. Two adjacent sleeves 230 are connected by an inner link plate 240 or an outer link plate 250. The plurality of first pins 210 and the plurality of second pins 220 are staggered one by one in the sleeves 230. The outer diameter of the end of the first pin 210 is larger than the outer diameter of the end of the second pin 220. The disassembly and positioning tool includes:

[0030] The positioning frame 100 includes a positioning block 110. The positioning block 110 has an upper surface and a lower surface that are opposite to each other. The upper surface is recessed downward to form a plurality of first positioning holes 111 and a plurality of second positioning holes 112. The plurality of first positioning holes 111 and the plurality of second positioning holes 112 are staggered one by one.

[0031] The inner diameter of the first positioning hole 111 is larger than the inner diameter of the second positioning hole 112 , the end of the first pin 210 can at least partially extend into the first positioning hole 111 , and the end of the second pin 220 can at least partially extend into the second positioning hole 112 .

[0032] Specifically, the present application provides a plurality of first positioning holes 111 and a plurality of second positioning holes 112 on the positioning block 110, and the plurality of first positioning holes 111 and the plurality of second positioning holes 112 are arranged in an alternating manner. The chain 200 is placed on the positioning block 110, and the end of the first pin 210 is inserted into the first positioning hole 111, and the end of the second pin 220 is inserted into the second positioning hole 112, so as to lock the positions of the first pin 210 and the second pin 220, and lock the rotation between the chain links, thereby achieving the overall positioning of the chain 200 through the first positioning hole 111 and the second positioning hole 112 of the positioning block 110. Finally, the chain 200 can be disassembled using an electric wrench or other disassembly tool to facilitate the maintenance and repair of the chain 200.

[0033] It should be noted that in order to allow the ends of all first pins 210 to extend into the first positioning holes 111 and the ends of all second pins 220 to extend into the second positioning holes 112, it is necessary to make the distance between any adjacent first positioning holes 111 and second positioning holes 112 equal to the distance between any adjacent first pins 210 and second pins 220. Of course, in the actual manufacturing process, due to the limitations of manufacturing cost and manufacturing accuracy, the distance between the first positioning holes 111 and the second positioning holes 112 can be slightly larger or slightly smaller than the distance between the first pins 210 and the second pins 220. Due to the existence of gaps between the various parts in the chain 200, the first pins 210 can also be extended into the first positioning holes 111, and the second pins 220 can be extended into the second positioning holes 112.

[0034] Furthermore, when the end of the first pin shaft 210 extends into the first positioning hole 111 and the second pin shaft 220 extends into the second positioning hole 112 , the plurality of outer link plates 250 fit against the upper surface of the positioning block 110 .

[0035] Specifically, when the end of the first pin shaft 210 extends into the first positioning hole 111 and the end of the second pin shaft 220 extends into the second positioning hole 112, the outer link plate 250 fits against the upper surface of the positioning block 110 to increase the contact area between the chain 200 and the positioning block 110, thereby enhancing the stability of the chain 200 after being positioned and avoiding shaking when the chain 200 is disassembled.

[0036] Furthermore, the inner diameter of the first positioning hole 111 is greater than or equal to the outer diameter of the end of the first pin shaft 210 . The inner diameter of the second positioning hole 112 is greater than or equal to the outer diameter of the end of the second pin shaft 220 .

[0037] Specifically, in order for the end of the first pin shaft 210 to be able to extend into the first positioning hole 111 and the end of the second pin shaft 220 to be able to extend into the second positioning hole 112, it is necessary to make the outer diameter of the end of the first pin shaft 210 less than or equal to the inner diameter of the first positioning hole 111, and the outer diameter of the end of the second pin shaft 220 less than or equal to the inner diameter of the second positioning hole 112.

[0038] It should be noted that the cross-sectional shapes of the first and second positioning holes 111, 112 are determined by the cross-sectional shapes of the ends of the first and second pins 210, 220. Typically, the cross-sectional shapes of the ends of the first and second pins 210, 220 are circular. Therefore, in this embodiment, both the first and second positioning holes 111, 112 are circular holes.

[0039] Furthermore, the positioning frame 100 further includes two support columns 120 , and the two support columns 120 are respectively fixed to two ends of the positioning block 110 .

[0040] Furthermore, the positioning frame 100 further includes two support plates 130 . The two support plates 130 are disposed in the middle of the positioning block 110 and are located on opposite sides of the positioning block 110 .

[0041] Furthermore, a plurality of storage spaces 140 are provided below the positioning block 110 .

[0042] Furthermore, a storage box is placed in the storage space 140 .

[0043] Specifically, the support column 120 and the support plate 130 are provided to support the positioning block 110 and at the same time raise the height of the positioning block 110 so that a storage space 140 is formed below the positioning block 110. A storage box is placed in the storage space 140 to receive the disassembled parts.

[0044] Furthermore, the first positioning hole 111 passes through the upper surface and the lower surface of the positioning block 110 .

[0045] Furthermore, the second positioning hole 112 passes through the upper surface and the lower surface of the positioning block 110 .

[0046] Specifically, the first positioning hole 111 and the second positioning hole 112 both pass through the upper surface and the lower surface of the positioning block 110, that is, the first positioning hole 111 and the second positioning hole 112 are both through holes. After the fixing nuts of the first pin shaft 210 and the second pin shaft 220 are removed, the first pin shaft 210 and the second pin shaft 220 are detached from the sleeve 230 where they are located, and under the action of their own gravity, they fall through the first positioning hole 111 and the second positioning hole 112 into the storage box below, realizing automatic storage of parts and improving the convenience of maintenance of the chain 200.

[0047] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0048] In addition, terms such as "first," "second," and "an" in this utility model are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0049] In this utility model, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0050] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in this field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

Claims

1. A disassembly and positioning tool for a chain, the chain comprising a plurality of sleeves, a plurality of first pins, and a plurality of second pins, wherein two adjacent sleeves are connected by an inner link plate or an outer link plate, the plurality of first pins and the plurality of second pins are staggered one by one in the sleeves, the outer diameter of the end of the first pin is larger than the outer diameter of the end of the second pin, and characterized in that: The disassembly and positioning tooling comprises: A positioning frame, the positioning frame including a positioning block, the positioning block having an upper surface and a lower surface opposite to each other, the upper surface being recessed downward to form a plurality of first positioning holes and a plurality of second positioning holes, wherein the plurality of first positioning holes and the plurality of second positioning holes are staggered one by one; The inner diameter of the first positioning hole is larger than that of the second positioning hole, the end of the first pin shaft can at least partially extend into the first positioning hole, and the end of the second pin shaft can at least partially extend into the second positioning hole.

2. A disassembly and positioning tool for a chain according to claim 1, characterized in that: When the end of the first pin shaft extends into the first positioning hole and the second pin shaft extends into the second positioning hole, the plurality of outer link plates fit into the upper surface of the positioning block.

3. A disassembly and positioning tool for a chain according to claim 1, characterized in that: An inner diameter of the first positioning hole is greater than or equal to an outer diameter of an end portion of the first pin shaft.

4. A disassembly and positioning tool for a chain according to claim 1, characterized in that: An inner diameter of the second positioning hole is greater than or equal to an outer diameter of the end portion of the second pin shaft.

5. The disassembly and positioning tool for a chain according to claim 1, characterized in that: The positioning frame further includes two supporting columns, and the two supporting columns are respectively fixed to the two ends of the positioning block.

6. A disassembly and positioning tool for a chain according to claim 1, characterized in that: The positioning frame further includes two support plates, which are arranged in the middle of the positioning block and are respectively located on opposite sides of the positioning block.

7. A disassembly and positioning tool for a chain according to claim 1, characterized in that: A plurality of storage spaces are further provided below the positioning block.

8. A chain disassembly and positioning tool according to claim 7, characterized in that: A storage box is placed in the storage space.

9. A disassembly and positioning tool for a chain according to claim 1, characterized in that: The first positioning hole passes through the upper surface and the lower surface of the positioning block.

10. The disassembly and positioning tool for a chain according to claim 1, characterized in that: The second positioning hole passes through the upper surface and the lower surface of the positioning block.

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