Universal end coupler puller

By designing a universal end connector puller and employing a hydraulic force-enhancing method, the problems of severe corrosion and cumbersome assembly of existing pullers have been solved. This enables quick and easy disassembly of end connectors, is applicable to various models of end connectors, and improves work efficiency and safety.

CN224059745UActive Publication Date: 2026-03-31Chinese People's Liberation Army Unit 32133
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-04-30
Publication Date
2026-03-31

AI Technical Summary

Technical Problem

The existing end coupler pullers are severely corroded and difficult to disassemble. Hydraulically driven pullers require cumbersome assembly and are heavy, with limited applicability and cannot be adapted to different models of end couplers.

Method used

Design a universal end coupler puller that uses a hydraulic force amplification method. Through components such as an oil tank, hydraulic pump, hydraulic cylinder, connecting orifice plate, limit pin, and push rod, it achieves rapid disassembly and is applicable to various models of end couplers.

Benefits of technology

It enables quick and easy disconnection of the terminal connector, reduces operation time, improves work efficiency, reduces safety hazards, and has a wide range of applications.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a universal type end connector puller which comprises an oil tank, the top of the oil tank is fixedly connected with a hydraulic oil pump, the input end of the hydraulic oil pump is communicated with the top of the oil tank and extends to the lower side of the interior of the oil tank, and the output end of the hydraulic oil pump is communicated with an oil conveying hose. And the other end of the oil conveying hose communicates with a hydraulic oil cylinder, connecting hole plates are fixedly connected to the top and the bottom of the front side of the hydraulic oil cylinder correspondingly, and limiting pins are slidably connected to the inner surfaces of the connecting hole plates. Firstly, the connecting hole plate is connected with a bolt hole of the end coupler, then the distance between the push rods is adjusted according to the hole distance of the end coupler, finally, a piston rod of the hydraulic oil cylinder is driven by the hydraulic oil pump to move forwards, and the purpose of rapidly separating the end coupler from a track pin is achieved. According to the end connector puller, a hydraulic boosting method is adopted to complete work, and the caterpillar band end connector puller is optimally designed, so that the purposes of vividness, intuitiveness and rapidness in disassembly are achieved.
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Description

Technical Field

[0001] This utility model relates to the field of track end coupler disassembly technology, specifically a universal end coupler puller. Background Technology

[0002] Tracks are a crucial component of equipment. Currently, various types of end couplers are used on tracks. End couplers primarily connect individual track plates together. Tracks are installed on the moving parts of equipment to improve its mobility. The location of the tracks determines their working environment; prolonged exposure to harsh environments makes them prone to corrosion. During equipment maintenance, difficulties in disassembling or damage to track end couplers frequently arise. Different vehicle models have different end coupler bore diameters and lengths. Currently, the issued end coupler disassembly tools include manual and hydraulically driven types, but these are only applicable to specific vehicle models and are complex to install and inconvenient to operate. Repair personnel and equipment operators sometimes use simple and crude methods to disassemble end couplers for convenience, posing certain safety hazards, easily causing injuries, and resulting in low work efficiency, seriously affecting maintenance operations.

[0003] Existing end connector pullers come in two types: screw-driven and hydraulically driven. Screw-driven pullers, however, have been found to be severely corroded and unable to complete disassembly. Hydraulically driven pullers require cumbersome assembly and are relatively heavy. Both types of end connector pullers have limited applicability; one model of puller can only be used with one type of end connector. This new equipment is small, lightweight, easy to operate, and simple to use. It requires no complicated assembly or training before use; simply connect the equipment to the end connector to begin operation. One person can operate it independently. Disassembling an end connector, from equipment installation to removal, significantly reduces operation time and improves work efficiency. Utility Model Content

[0004] To address the problems mentioned in the background art, the purpose of this utility model is to provide a universal end connector puller that has the advantage of quick disassembly. This solves the problems of existing end connector pullers that are found to be severely corroded and cannot be disassembled, hydraulically driven pullers that require cumbersome assembly before use and are relatively heavy, and the limited applicability of end connector pullers, where one type of end connector puller can only be used for one type of end connector.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a universal end connector puller, comprising an oil tank, wherein a hydraulic oil pump is fixedly connected to the top of the oil tank, the input end of the hydraulic oil pump is connected to the top of the oil tank and extends to the lower interior of the oil tank, the output end of the hydraulic oil pump is connected to an oil delivery hose, and the other end of the oil delivery hose is connected to a hydraulic cylinder.

[0006] The top and bottom of the front side of the hydraulic cylinder are fixedly connected with connecting hole plates. The inner surface of the connecting hole plates is slidably connected with limit pins. The output end of the hydraulic cylinder is fixedly connected with a sliding groove rod. The left and right sides of the inner surface of the sliding groove rod are slidably connected with push rods. The surface of the push rod is threaded with fixing bolts.

[0007] As a preferred embodiment of this invention, the bottom of the oil tank is provided with four casters.

[0008] As a preferred embodiment of this invention, a push handle is fixedly connected to the right side of the oil tank.

[0009] As a preferred embodiment of this invention, a handle is fixedly connected to the top of the hydraulic cylinder, and the handle is U-shaped.

[0010] As a preferred embodiment of this invention, the surface of the grip is provided with anti-slip texture.

[0011] As a preferred embodiment of this utility model, the limiting pin is made of aluminum alloy and is cylindrical in shape.

[0012] As a preferred embodiment of this invention, the oil tank is made of stainless steel and has a rectangular shape.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. This utility model first connects the connecting plate with the bolt holes of the end connector. Next, the spacing of the push rod is adjusted according to the hole spacing of the end connector. Finally, the piston rod of the hydraulic cylinder is driven forward by the hydraulic oil pump to achieve the purpose of quickly separating the end connector from the track pin. The end connector puller completes the work by using hydraulic force amplification. By optimizing the design of the track end connector puller, the purpose of intuitive and quick disassembly is achieved.

[0015] 2. By incorporating casters, this utility model reduces the friction between the oil tank and the ground, making it easier for users to move the oil tank. Attached Figure Description

[0016] Figure 1 This is a front view of the hydraulic cylinder structure of this utility model;

[0017] Figure 2 This is a bottom view of the hydraulic cylinder structure of this utility model;

[0018] Figure 3 This is an exploded view of the hydraulic cylinder structure of this utility model;

[0019] Figure 4 This is an exploded view of the push rod structure of this utility model.

[0020] In the diagram: 1. Oil tank; 2. Hydraulic oil pump; 3. Oil hose; 4. Hydraulic cylinder; 5. Connecting orifice plate; 6. Limit pin; 7. Sliding rod; 8. Push rod; 9. Fixing bolt; 10. Caster wheel; 11. Push handle; 12. Grip; 13. Anti-slip texture. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] like Figures 1 to 4 As shown, the present invention provides a universal end connector puller, including an oil tank 1, a hydraulic oil pump 2 fixedly connected to the top of the oil tank 1, the input end of the hydraulic oil pump 2 communicating with the top of the oil tank 1 and extending to the lower inside of the oil tank 1, the output end of the hydraulic oil pump 2 communicating with an oil delivery hose 3, and the other end of the oil delivery hose 3 communicating with a hydraulic cylinder 4.

[0023] The top and bottom of the front side of the hydraulic cylinder 4 are fixedly connected with connecting hole plates 5. The inner surface of the connecting hole plate 5 is slidably connected with limit pins 6. The output end of the hydraulic cylinder 4 is fixedly connected with a sliding groove rod 7. The left and right sides of the inner surface of the sliding groove rod 7 are slidably connected with push rods 8. The surface of the push rod 8 is threaded with fixing bolts 9.

[0024] refer to Figure 2 The bottom of the oil tank 1 is equipped with four casters 10.

[0025] As a technical optimization of this utility model, by setting universal wheels 10, the friction between the oil tank 1 and the ground can be reduced, making it easier for users to move the oil tank 1.

[0026] refer to Figure 1 A push handle 11 is fixedly connected to the right side of oil tank 1.

[0027] As a technical optimization of this utility model, by setting the push handle 11, the contact area between the user's hands and the oil tank 1 can be increased, making it more convenient for the user to use.

[0028] refer to Figure 1 A handle 12 is fixedly connected to the top of the hydraulic cylinder 4. The handle 12 is U-shaped.

[0029] As a technical optimization of this utility model, by setting the handle 12, the contact area between the user's hands and the hydraulic cylinder 4 can be increased, making it easier for the user to move the hydraulic cylinder 4.

[0030] refer to Figure 1 The surface of the grip 12 is provided with anti-slip texture 13.

[0031] As a technical optimization of this utility model, by setting anti-slip texture 13, the friction between the user's hands and the handle 12 can be increased, preventing the handle 12 from slipping out of the hand during use.

[0032] refer to Figure 1 The limiting pin 6 is made of aluminum alloy and is cylindrical in shape.

[0033] As a technical optimization of this utility model, by setting the limiting pin 6 made of aluminum alloy, the strength of the limiting pin 6 can be increased, making the limiting pin 6 less prone to bending.

[0034] refer to Figure 1 Oil tank 1 is made of stainless steel and is rectangular in shape.

[0035] As a technical optimization of this utility model, by setting the oil tank 1 to be made of stainless steel, it is possible to prevent the oil tank 1 from rusting and to prevent the oil tank 1 from being damaged due to rusting.

[0036] The working principle and usage process of this utility model are as follows: First, position the end connector on the track between the connecting hole plates 5. Then, use the limiting pin 6 to pass through the bolt holes on the connecting hole plate 5 and the end connector, connecting the connecting hole plate 5 and the bolt holes of the end connector together. Next, adjust the spacing of the push rods 8 according to the hole spacing of the end connector. After adjustment, fix the push rods 8 to the slide bar 7 using the fixing bolts 9. Finally, start the hydraulic oil pump 2, which drives the piston rod of the hydraulic cylinder 4 to move forward. The piston rod drives the push rod 8 on the slide bar 7 to engage with the connecting pin of the track plate. The push rod 8 and the connecting part work together to fix the end connector puller on the end connector. When the piston rod drives the push rod 8 to a certain distance, the end connector and track pin are quickly separated. The end connector puller uses a hydraulic force-increasing method to complete the work. By optimizing the design of the track end connector puller, the design achieves a clear and intuitive appearance and quick disassembly.

[0037] In summary, this universal end coupler puller, by incorporating an oil tank 1, hydraulic oil pump 2, oil hose 3, hydraulic cylinder 4, connecting orifice plate 5, limit pin 6, sliding rod 7, push rod 8, and fixing bolt 9, solves the problems of existing end coupler pullers that are basically impossible to disassemble due to severe corrosion, hydraulically driven pullers that require cumbersome assembly before use and are relatively heavy, and the limited applicability of end coupler pullers, where one type of end coupler puller can only be used for one type of end coupler.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0039] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A universal end connector puller comprising a tank (1) characterised in that: The top of the oil tank (1) is fixedly connected with a hydraulic oil pump (2), the input end of the hydraulic oil pump (2) is in communication with the top of the oil tank (1) and extends to the inside lower side of the oil tank (1), the output end of the hydraulic oil pump (2) is in communication with an oil delivery hose (3), the other end of the oil delivery hose (3) is in communication with a hydraulic oil cylinder (4); The top and bottom of the front side of the hydraulic oil cylinder (4) are fixedly connected with a connecting hole plate (5), the inner surface of the connecting hole plate (5) is slidably connected with a limiting pin (6), the output end of the hydraulic oil cylinder (4) is fixedly connected with a sliding groove rod (7), the left and right sides of the inner surface of the sliding groove rod (7) are slidably connected with a push rod (8), the surface of the push rod (8) is threadedly connected with a fixing bolt (9).

2. A universal end connector puller according to claim 1, wherein: The bottom of the oil tank (1) is provided with four universal wheels (10).

3. A universal end connector puller according to claim 1, wherein: The right side of the oil tank (1) is fixedly connected with a push handle (11).

4. A universal end connector puller according to claim 1 wherein: The top of the hydraulic oil cylinder (4) is fixedly connected with a handle (12), the shape of the handle (12) is U-shaped.

5. A universal end connector puller according to claim 4, wherein: The surface of the handle (12) is provided with anti-skid lines (13).

6. A universal end connector puller according to claim 1 wherein: The material of the limiting pin (6) is aluminum alloy, and the shape of the limiting pin (6) is cylindrical.

7. A universal end connector puller according to claim 1 wherein: The material of the oil tank (1) is stainless steel, and the shape of the oil tank (1) is rectangular.