Tool for disassembling a sprocket roller assembly

Abstract

The application provides a tool for disassembling a gear roller assembly on a chain shaft, which comprises a connecting plate, a supporting frame, a blocking rod, a pressing plate, a reset elastic component, a connecting arm, a disassembling hook and a force applying rod. The tool is designed in combination with the structural features of the disassembling object. A disassembling personnel can apply force to the force applying rod with both hands, so that the wedge-shaped disassembling hook is lifted upward, the wedge surface of the disassembling hook is contacted with the end of the π-shaped plastic support, the friction force is overcome and the plastic support is deformed and moved upward under the reaction force of the wedge surface, the support of the gear roller assembly is opened, and the gear roller assembly is separated from the two ends of the chain pin shaft. The chain shaft end is gradually pushed away, the π-shaped plastic buckle on the chain shaft is disengaged, and the gear roller assembly is disassembled with high efficiency, high reliability and low cost. The manual brute force disassembling mode is fundamentally abandoned, and the problem of no special disassembling tool and difficult disassembling is solved.

Description

Technical Field

[0001] This invention relates to the field of mechanical component disassembly and assembly technology, specifically a tooling for disassembling a gear roller assembly on a chain shaft. Background Technology

[0002] A gear roller assembly is a component used for material conveying. It is generally made of plastic and mainly consists of gears, rollers, snap-fit ​​brackets, elastic retaining rings for shafts, and roller shafts. The snap-fit ​​bracket is a single-chain shaft bracket on the gear roller assembly. It is a bracket structure designed according to a single pitch and is used to lock the two ends of the chain shaft. It often needs to be disassembled during inspection and maintenance.

[0003] In existing technologies, there are few tooling options available for disassembling gear roller assemblies on chain shafts. Disassembly still relies on manual labor. Disassembling a gear roller assembly on a chain pin requires manual labor using a pry bar. The operator must first use one hand to find the fulcrum between the gear roller assembly's bracket and the chain using the pry bar, while the other hand must pry the raised end of the assembly to achieve disassembly. This method is time-consuming, labor-intensive, slow, inefficient, and prone to injury. Furthermore, manual disassembly requires experience and can cause significant damage to plastic gear roller assemblies. Currently, there is a lack of suitable tools for disassembling gear roller assemblies, and disassembly methods are not standardized. Therefore, there is an urgent need to utilize auxiliary tooling to complete the disassembly work and compensate for the shortcomings of existing technical solutions. Thus, designing a tooling solution for disassembling gear roller assemblies on chain shafts is essential. Summary of the Invention

[0004] The purpose of this invention is to provide a tooling for disassembling a gear roller assembly on a chain shaft, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A tooling for disassembling a gear roller assembly on a chain shaft includes a connecting plate, a support frame, a blocking bar, a pressing plate, a reset elastic component, a connecting arm, a disassembly hook, and a force-applying bar, wherein:

[0007] Two parallel support frames are installed at both ends of the connecting plate. The upper middle of the two support frames is connected by a blocking rod. A second sliding groove is provided in the middle of the pressing plate. The blocking rod is stuck in the second sliding groove. A reset elastic component is installed inside the second sliding groove. The upper end of the reset elastic component abuts against the inner side wall of the second sliding groove, and the lower end abuts against the upper end face of the blocking rod. Force rods are fixed on both sides of the upper end of the pressing plate and the outer side of the support frame.

[0008] A connecting arm is installed at the lower end of the support frame, and a disassembly hook is fixed at the upper end of the connecting arm. The disassembly hook is wedge-shaped, and the wedge end is inclined toward the center of the two support frames.

[0009] Preferably, longitudinal guide grooves are provided on both sides of the second sliding groove, a guide block is fixed at the lower end of the blocking rod, and a protrusion that is stuck in the guide groove is provided on the side of the guide block near the guide groove.

[0010] Preferably, the reset elastic component is one or a combination of at least two of the following: a spring, a hydraulic rod, and a spring rod.

[0011] Preferably, the support frame consists of upper and lower parts connected by a lifting connection assembly. The lifting connection assembly consists of a lifting rod, a lifting screw, an adjusting nut, and a lifting seat. The upper support frame has a longitudinal first sliding groove, and lifting grooves are provided on both sides of the first sliding groove. The upper end of the lower support frame is fixed with a lifting rod and a lifting screw. The lifting rod is engaged in the lifting groove, and the lifting screw is located in the first sliding groove. The upper end of the lifting screw is rotatably installed in the lifting seat, and the lifting seat is engaged in the first sliding groove. The upper support frame has an adjusting groove that penetrates the support frame. An adjusting nut is provided in the adjusting groove, and the adjusting nut and the lifting screw are connected by threaded engagement.

[0012] Preferably, a connecting cylinder is fixed to the lower end of the support frame, the connecting arm is inserted into the connecting cylinder, multiple sets of positioning grooves are evenly arranged on the outer side of the connecting arm, and a positioning component is installed on the side wall of the connecting cylinder. The positioning component passes through the connecting cylinder and abuts against the positioning groove to fix the connecting arm.

[0013] Preferably, the positioning assembly includes a housing, a positioning rod, a limiting ring, a positioning spring, and an operating handle. The housing is fixed to the outer side of the connecting arm. The positioning rod is provided inside the housing. The limiting ring is fitted on the positioning rod. The positioning spring is fitted on the positioning rod, with one end abutting against the limiting ring and the other end abutting against the inner side wall of the housing. One end of the positioning rod passes through the connecting cylinder and abuts against the positioning groove, while the other end extends to the outside of the housing and is fitted with an operating handle.

[0014] Preferably, the two ends of the connecting plate and the blocking rod pass through the support frame, and a threaded cylinder is fixed on the two support frames. The threaded cylinder is connected by a rotating screw, and a rotating disk is fixed in the middle of the rotating screw. The outer thread of the rotating screw and the inner thread of the threaded cylinder are engaged.

[0015] Preferably, the force-applying rod is covered with a protective sleeve.

[0016] Preferably, the lower end of the pressing plate has an inverted trapezoidal structure.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] This invention is designed based on the structural characteristics of the object to be disassembled. The disassembly personnel can apply force to the lever with both hands, causing the wedge-shaped disassembly hook to lift upwards. This causes the wedge-shaped surface of the disassembly hook to contact the end of the π-shaped plastic bracket, overcoming friction and moving. At the same time, the plastic bracket is deformed and moves upwards due to the reaction force of the wedge-shaped surface, thus opening the gear roller assembly bracket and disengaging it from both ends of the chain pin. Gradually, it is pulled away from the chain shaft end, realizing the removal of the π-shaped plastic buckle on the chain shaft. In the case of long chains, it can disassemble gear roller assemblies with high efficiency, high reliability, and low cost, fundamentally eliminating the need for manual brute force disassembly and solving the problem of difficult disassembly due to the lack of specialized disassembly tools. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall front structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the internal structure of the pressing plate in this invention;

[0021] Figure 3 This is a schematic diagram of the lifting connection assembly in this invention;

[0022] Figure 4 This is a schematic diagram of the installation structure of the lifting seat in this invention;

[0023] Figure 5 This is a schematic diagram of the mounting structure of the connecting arm in this invention;

[0024] Figure 6 This is a schematic diagram of the positioning component in this invention;

[0025] Figure 7 This is a schematic diagram of the installation structure of the rotating lead screw and the threaded cylinder in this invention;

[0026] Figure 8 This is a schematic diagram of the overall back structure of the present invention.

[0027] In the diagram: 1 connecting plate, 2 support frame, 21 lifting groove, 22 first sliding groove, 23 adjusting groove, 3 blocking rod, 4 pressing plate, 41 second sliding groove, 42 guide groove, 5 reset elastic component, 6 connecting arm, 61 positioning groove, 7 disassembly hook, 8 force bar, 9 protective sleeve, 10 lifting connection component, 1001 lifting rod, 1002 lifting screw, 1003 adjusting nut, 1004 lifting seat, 11 positioning component, 1101 outer shell, 1102 positioning rod, 1103 limit ring, 1104 positioning spring, 1105 operating handle, 12 guide block, 13 connecting cylinder, 14 rotating screw, 15 threaded cylinder, 16 rotating disk. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Example 1:

[0030] Please see Figure 1 The present invention provides a technical solution:

[0031] A tooling for disassembling a gear roller assembly on a chain shaft includes a connecting plate 1, a support frame 2, a blocking rod 3, a pressing plate 4, a reset elastic component 5, a connecting arm 6, a disassembly hook 7, and a force-applying rod 8, wherein:

[0032] Two parallel support frames 2 are installed at both ends of the connecting plate 1. The upper middle of the two support frames 2 is connected by a blocking rod 3. A second sliding groove 41 is provided in the middle of the pressing plate 4. The blocking rod 3 is locked in the second sliding groove 41 and can move up and down in the second sliding groove 41. A reset elastic component 5 is installed inside the second sliding groove 41. The reset elastic component 5 is one of a spring, a hydraulic rod, or a spring rod, or a combination of at least two of them. The upper end of the reset elastic component 5 abuts against the inner side wall of the second sliding groove 41, and the lower end abuts against the upper end face of the blocking rod 3. The reset elastic component 5 is supported between the pressing plate 4 and the blocking rod 3 and can quickly reset after the blocking rod 3 moves upward.

[0033] The upper sides of the pressing plate 4 and the outer side of the support frame 2 are all fixed with force-applying rods 8 to facilitate the application of force. When in use, hold the force-applying rods on both sides with both hands and bring them close together. At this time, the support frames on both sides move upward relative to each other, and the pressing plate 4 moves downward. The force-applying rod 8 is covered with a protective sleeve 9, which can protect the hands and increase the friction to facilitate the application of force to the force-applying rod 8.

[0034] The lower end of the support frame 2 is equipped with a connecting arm 6, and the upper end of the connecting arm 6 is fixed with a disassembly hook 7. The disassembly hook 7 is wedge-shaped, and the wedge end is inclined towards the center of the two support frames 2. After analyzing and studying the structural characteristics of the gear roller assembly bracket, it is found that the wedge surface principle can be used to effectively open the end of the π-shaped plastic bracket. Therefore, the wedge-shaped disassembly hook 7 can easily disassemble the plastic bracket. The lower end of the pressing plate 4 is an inverted trapezoidal structure. The inverted trapezoidal structure is the same as the upper end groove shape of the gear roller assembly bracket, so that the lower end of the pressing plate 4 can abut against the gear roller assembly bracket to ensure stability.

[0035] In this embodiment, during use, the disassembly operator applies force to the force bar 8 with both hands, causing the wedge-shaped disassembly hook 7 to lift upwards and the pressing plate 4 to move downwards, with its lower end abutting against the support of the gear roller assembly. This causes the wedge-shaped surface of the disassembly hook 7 to contact the end of the π-shaped plastic support, overcoming friction and moving. At the same time, the plastic support is deformed by the reaction force of the wedge-shaped surface and moves upwards, thus opening the gear roller assembly support and disengaging it from both ends of the chain pin. Gradually, it is pulled away from the chain shaft end, achieving rapid removal of the π-shaped plastic buckle on the chain shaft. This fundamentally eliminates the need for manual brute force disassembly and solves the problem of difficult disassembly due to the lack of specialized disassembly tools.

[0036] Example 2:

[0037] Based on the technical solution described in Embodiment 1 above, please refer to Figure 2 As shown, longitudinal guide grooves 42 are also provided on both sides of the second sliding groove 41. A guide block 12 is fixed at the lower end of the blocking rod 3. The side of the guide block 12 near the guide groove 42 is provided with a protrusion that is stuck in the guide groove 42. The protrusions on both sides of the guide block 12 can be stuck in the guide groove 42 and move with the movement of the blocking rod 3, so that the blocking rod 3 can only move up and down relative to the pressing plate 4, and cannot rotate or move left and right, thereby limiting the movement mode of the blocking rod 3 relative to the pressing plate 4.

[0038] Example 3:

[0039] Based on the technical solution described in Embodiment 1 above, please refer to Figure 3-4As shown, the support frame 2 consists of two parts, upper and lower, which are connected by a lifting connection assembly 10. The lifting connection assembly 10 consists of a lifting rod 1001, a lifting screw 1002, an adjusting nut 1003, and a lifting seat 1004. The upper support frame 2 is provided with a longitudinal first sliding groove 22, and lifting grooves 21 are provided on both sides of the first sliding groove 22. The upper end face of the lower support frame 2 is fixed with the lifting rod 1001 and the lifting screw 1002. The lifting rod 1001 is stuck in the lifting groove 21 and can move up and down in the lifting groove 21, limiting the lower support frame 2 to only move up and down and not to rotate or perform other movements.

[0040] The lifting screw 1002 is located in the first sliding groove 22. The upper end of the lifting screw 1002 is rotatably mounted in the lifting seat 1004. The lifting seat 1004 is locked in the first sliding groove 22. The upper end of the lifting screw 1002 can rotate in the lifting seat 1004. The lifting seat 1004 supports the upper end of the lifting screw 1002 and can also move up and down in the first sliding groove 22. The upper support frame 2 is provided with an adjustment groove 23 that passes through the support frame 2. An adjustment nut 1003 is provided in the adjustment groove 23. The adjustment nut 1003 and the lifting screw 1002 are connected by thread engagement. When the adjustment nut 1003 is rotated, the lower support frame 2 can be driven to move up and down under the action of the thread, thereby changing the height of the entire support frame 2 to meet the disassembly requirements of different gear roller assemblies.

[0041] Example 4:

[0042] Based on the technical solution described in Embodiment 1 above, please refer to Figure 5 As shown, a connecting cylinder 13 is fixed to the lower end of the support frame 2, and the connecting arm 6 is inserted into the connecting cylinder 13. The connecting arm 6 can slide back and forth within the connecting cylinder 13. Multiple sets of positioning grooves 61 are evenly arranged on the outer side of the connecting arm 6. A positioning component 11 is installed on the side wall of the connecting cylinder 13. The positioning component 11 penetrates the connecting cylinder 13 and abuts against the positioning groove 61 to fix the connecting arm 6. The positioning component 11 is a screw that penetrates the connecting cylinder 13. The inner side of the connecting cylinder 13 that contacts the screw is also provided with an internal thread that matches the external thread of the screw. When the screw is tightened, the connecting arm 6 cannot slide to adjust the position of the disassembly hook 7. When the screw is loose, the connecting arm 6 can slide. This structure can change the position of the disassembly hook 7 to meet the disassembly requirements of different gear roller assemblies.

[0043] Example 5:

[0044] Based on the technical solution described in Embodiment 4 above, please refer to Figure 6As shown, the positioning assembly 11 does not use a screw for fixing. The positioning assembly specifically includes a housing 1101, a positioning rod 1102, a limiting ring 1103, a positioning spring 1104, and an operating handle 1105. The housing 1101 is fixed to the outer side of the connecting arm 6. The positioning rod 1102 is disposed inside the housing 1101. The limiting ring 1103 is fitted onto the positioning rod 1102. The positioning spring 1104 is fitted onto the positioning rod 1102, with one end abutting against the limiting ring 1103 and the other end abutting against the inner wall of the housing 1101. One end of the positioning rod 1102 passes through the connecting cylinder 13 and rests against the positioning groove 61, while the other end extends to the outside of the outer shell 1101 and is equipped with an operating handle 1105. When the operating handle 1101 is pulled outward, the positioning spring 1104 is compressed, and one end of the positioning rod 1102 disengages from the positioning groove 61, allowing the connecting arm 6 to move. When the operating handle 1101 is released, the elastic force of the positioning spring 1104 is released, allowing one end of the positioning rod 1102 to re-enter the positioning groove 61. Compared with the screw fixing method used in Embodiment 4, the operation is simpler and more convenient.

[0045] Example 6:

[0046] Based on the technical solution described in Embodiment 1 above, please refer to Figure 7-8 As shown, the two ends of the connecting plate 1 and the blocking rod 3 pass through the support frame 2. The support frame 2 can slide along the connecting rod 1 and the blocking rod 3. Threaded cylinders 15 are fixed on the two support frames 2. The threaded cylinders 15 are connected by a rotating screw 14. A rotating disk 16 is fixed in the middle of the rotating screw 14. The outer thread of the rotating screw 14 meshes with the inner thread of the threaded cylinder 15. When the rotating disk 16 is rotated, it can drive the rotating screw 14 to move. The rotating screw 14 drives the threaded cylinders 15 on both sides to move closer or further apart through the action of the thread. At this time, the distance between the two support frames 2 can be adjusted, thereby changing the distance between the two disassembly hooks 7, so that this distance is the same as the distance between the π-shaped plastic brackets on both sides of the gear roller assembly, thus meeting the disassembly requirements under different conditions.

[0047] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tooling for disassembling a gear roller assembly on a chain shaft, comprising a connecting plate (1), a support frame (2), a blocking rod (3), a pressing plate (4), a reset elastic assembly (5), a connecting arm (6), a disassembly hook (7), and a force-applying rod (8), characterized in that: Two parallel support frames (2) are installed at both ends of the connecting plate (1). The upper middle parts of the two support frames (2) are connected by a blocking rod (3). A second sliding groove (41) is provided in the middle of the pressing plate (4). The blocking rod (3) is stuck in the second sliding groove (41). A reset elastic component (5) is installed inside the second sliding groove (41). The upper end of the reset elastic component (5) abuts against the inner side wall of the second sliding groove (41), and the lower end abuts against the upper end face of the blocking rod (3). Force rods (8) are fixed on both sides of the upper end of the pressing plate (4) and the outer side of the support frame (2). A connecting arm (6) is installed at the lower end of the support frame (2), and a disassembly hook (7) is fixed at the upper end of the connecting arm (6). The disassembly hook (7) is wedge-shaped and the wedge end is inclined toward the center of the two support frames (2). The support frame (2) consists of two parts, upper and lower, connected by a lifting connection assembly (10). The lifting connection assembly (10) consists of a lifting rod (1001), a lifting screw (1002), an adjusting nut (1003), and a lifting seat (1004). The upper support frame (2) has a longitudinal first sliding groove (22), and lifting grooves (21) are provided on both sides of the first sliding groove (22). The lower support frame (2) has a lifting rod (1001) and a lifting screw (1002) fixed on its upper surface. The lifting rod (1001) is locked in the lifting groove (21), the lifting screw (1002) is located in the first sliding groove (22), the upper end of the lifting screw (1002) is rotatably installed in the lifting seat (1004), the lifting seat (1004) is locked in the first sliding groove (22), the upper support frame (2) is provided with an adjustment groove (23) that passes through the support frame (2), the adjustment groove (23) is provided with an adjustment nut (1003), the adjustment nut (1003) and the lifting screw (1002) are connected by thread engagement; The lower end of the support frame (2) is fixed with a connecting cylinder (13), the connecting arm (6) is inserted into the connecting cylinder (13), and multiple sets of positioning grooves (61) are evenly arranged on the outer side of the connecting arm (6). A positioning component (11) is installed on the side wall of the connecting cylinder (13). The positioning component (11) passes through the connecting cylinder (13) and abuts against the positioning groove (61) to fix the connecting arm (6). The positioning assembly (11) includes a housing (1101), a positioning rod (1102), a limiting ring (1103), a positioning spring (1104), and an operating handle (1105). The housing (1101) is fixed to the outer side of the connecting arm (6). The positioning rod (1102) is provided inside the housing (1101). The positioning rod (1102) is fitted with a limiting ring (1103). The positioning spring (1104) is fitted on the positioning rod (1102), with one end abutting against the limiting ring (1103) and the other end abutting against the inner side wall of the housing (1101). One end of the positioning rod (1102) passes through the connecting cylinder (13) and abuts against the positioning groove (61), while the other end extends to the outside of the housing (1101) and is fitted with an operating handle (1105).

2. The tooling for disassembling the gear roller assembly on the chain shaft according to claim 1, characterized in that: The second sliding groove (41) has longitudinal guide grooves (42) on both sides. The lower end of the blocking rod (3) is fixed with a guide block (12). The side of the guide block (12) near the guide groove (42) has a protrusion that is stuck in the guide groove (42).

3. The tooling for disassembling the gear roller assembly on the chain shaft according to claim 1, characterized in that: The reset elastic component (5) is one of a spring, a hydraulic rod, a spring rod, or a combination of at least two of them.

4. The tooling for disassembling the gear roller assembly on the chain shaft according to claim 1, characterized in that: The two ends of the connecting plate (1) and the blocking rod (3) pass through the support frame (2). The two support frames (2) are fixed with threaded cylinders (15). The threaded cylinders (15) are connected by rotating screws (14). A rotating disk (16) is fixed in the middle of the rotating screws (14). The outer thread of the rotating screws (14) and the inner thread of the threaded cylinders (15) mesh with each other.

5. A tooling for disassembling a gear roller assembly on a chain shaft according to any one of claims 1-4, characterized in that: The force-applying rod (8) is covered with a protective sleeve (9).

6. A tooling for disassembling a gear roller assembly on a chain shaft according to any one of claims 1-4, characterized in that: The lower end of the pressing plate (4) is an inverted trapezoidal structure.

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