Axial plunger pump half-coupling disassembling tool

Abstract

The utility model provides a kind of axial plunger pump half-coupling disassembly tool, including pull rod assembly, front locating disc, ejector, sleeve seat and rear locating disc;The rear locating disc is equipped with the connecting structure compatible with pull rod assembly;Multiple pull rod assembly is evenly distributed between front locating disc and rear locating disc, and the front locating disc is set on the screw rod of pull rod assembly by perforated sleeve, and is limited by upper nut;The sleeve seat is arranged between front locating disc and rear locating disc, the ejector is placed in sleeve seat, and one end is correspondingly matched with half-coupling, and the other end is abutted with rear locating disc;The rear locating disc and the screw rod end of pull rod assembly are connected and fixed by lower nut.This tool can stably provide axial tension and accurate positioning through component cooperation, realize efficient and accurate disassembly of half-coupling, effectively protect half-coupling and pump body and other components, improve disassembly efficiency and reduce labor intensity, and has simple structure and strong practicality.

Description

Technical Field

[0001] This utility model relates to the field of plunger pump disassembly tooling technology, specifically to a disassembly tooling for an axial plunger pump half coupling. Background Technology

[0002] Piston pumps are crucial components of hydraulic systems, and the half-coupling is a key component connecting to the electric motor. During equipment maintenance, the axial piston pump and its half-coupling need to be disassembled. Traditional disassembly methods often rely on general-purpose tools such as hydraulic pullers and hammers, which are difficult to control in terms of force, resulting in low efficiency, high labor intensity, and potential damage to components like the half-coupling and pump body. This affects the precision of component fit and the subsequent service life of the equipment, and fails to meet the demands of efficient and precise maintenance. Therefore, there is an urgent need for a dedicated, efficient disassembly fixture that protects the components being disassembled. Utility Model Content

[0003] The purpose of this utility model is to provide a disassembly fixture for an axial piston pump half coupling. This fixture, through component collaboration, can stably provide axial tension and precise positioning, enabling efficient and accurate disassembly of the half coupling. It effectively protects the half coupling and pump body and other components, improves disassembly efficiency, reduces labor intensity, has a simple structure, is highly practical, and has a wide range of applications. It can also be extended to the disassembly of similar couplings or shaft components.

[0004] To achieve the aforementioned technical features, the present invention aims to provide a disassembly tooling for an axial piston pump half-coupling, comprising a tie rod assembly, a front positioning plate, an ejector, a sleeve, and a rear positioning plate. The rear positioning plate is provided with a connection structure adapted to the tie rod assembly. Multiple sets of the tie rod assemblies are evenly distributed between the front and rear positioning plates. The front positioning plate is sleeved on the threaded rod of the tie rod assembly through a through hole and is limited by an upper nut. The sleeve is disposed between the front and rear positioning plates, and the ejector is placed inside the sleeve, with one end corresponding to the half-coupling and the other end abutting against the rear positioning plate. The rear positioning plate is connected and fixed to the end of the threaded rod of the tie rod assembly by a lower nut.

[0005] Preferably, the pull rod assembly includes a screw, an upper nut, and a lower nut, the screw has external threads at both ends, and the upper nut and the lower nut are adapted to the screw threads.

[0006] Preferably, the number of the pull rod assemblies is four, and they are evenly distributed in a circle between the front positioning plate and the rear positioning plate.

[0007] Preferably, the screw of the tie rod assembly is made of 45# steel, and the external thread specification at both ends of the screw is M16; Both the upper and lower nuts are hexagonal nuts, and their thread precision grades match those of the screw.

[0008] Preferably, the front positioning plate has a through hole adapted to the tie rod assembly, and the front positioning plate has a positioning structure for cooperating with the corresponding part of the axial piston pump.

[0009] Preferably, the disc body is made of Q235 steel plate by cutting and processing, the positioning structure is a positioning boss adapted to the mounting surface of the axial piston pump, and the diameter of the through hole is adapted to the screw.

[0010] Preferably, the ejector is a columnar structure adapted to the inner hole of the half-coupling; The sleeve has an internal cavity that accommodates the ejector and the half coupling.

[0011] Preferably, the ejector is made of 45# steel with heat treatment and the hardness of the ejector is 230HBW±10HBW. The ejector includes a columnar body and an adapter. The diameter of the columnar body is adapted to the inner hole of the half coupling. The adapter is respectively engaged with the sleeve and the rear positioning plate.

[0012] Preferably, the sleeve includes a base body made of cast steel, and the inner wall of the receiving cavity of the sleeve is coated with a polytetrafluoroethylene coating with a thickness of 0.5mm ± 0.05mm.

[0013] Preferably, the rear positioning plate is made of Q235 steel plate, and the connection structure of the rear positioning plate is a connecting hole, which is adapted to the screw; the rear positioning plate is also provided with a positioning mating part, a central hole and a clearance groove, the positioning mating part is correspondingly mated with the sleeve, the central hole is used to avoid the ejector, and the clearance groove is adapted to the structure of the half coupling.

[0014] The present invention has the following beneficial effects: This invention, through a reasonable combination of components, utilizes a tie rod assembly to provide stable axial tension, with precise positioning by the front and rear positioning plates, and the ejector and sleeve working in tandem to achieve efficient and precise disassembly of the axial piston pump half-coupling. Compared to traditional tool-based disassembly methods, it effectively protects the half-coupling, pump body, and other components from damage, significantly improves disassembly efficiency, reduces labor intensity, and provides reliable tooling for the repair and maintenance of axial piston pumps. It boasts advantages such as simple structure, strong practicality, and wide applicability, and can be widely applied to the disassembly of similar couplings or shaft components. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

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

[0017] Figure 2 This is a schematic diagram of the front positioning disc structure of this utility model.

[0018] Figure 3 This is a schematic diagram of the sleeve structure of this utility model.

[0019] Figure 4 This is a schematic diagram of the ejector structure of this utility model.

[0020] Figure 5 This is a schematic diagram of the rear positioning disc structure of this utility model.

[0021] Figure 6 This is a schematic diagram of the overall assembly structure of this utility model.

[0022] In the diagram: 1-Pull rod assembly, 101-Upper nut, 102-Screw, 103-Lower nut, 2-Front positioning plate, 201-Through hole, 202-Plate body, 203-Positioning structure, 3-Ejector, 301-Columnar body, 302-Adaptor part, 4-Sleeve, 401-Receiving cavity, 402-Seat body, 5-Rear positioning plate, 501-Connecting hole, 502-Positioning mating part, 503-Center hole, 504-Allowing groove. Detailed Implementation

[0023] The embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0024] Example 1: See Figure 1-6This embodiment provides a disassembly fixture for an axial piston pump half-coupling, including multiple sets of tie rod assemblies 1, a front positioning plate 2, an ejector 3, a sleeve 4, and a rear positioning plate 5. The tie rod assembly 1 includes a screw 102, an upper nut 101, and a lower nut 103. The screw 102 has external threads at both ends, and the upper nut 101 and lower nut 103 are both threaded to the screw 102. The front positioning plate 2 has a through hole 201 on its body 202 that mates with the tie rod assembly 1, and the front positioning plate 2 also has a positioning structure 203 for engaging with the corresponding part of the axial piston pump. The ejector 3 is a columnar structure that mates with the inner hole of the half-coupling. The sleeve... The seat 4 has an internal cavity 401 adapted to the ejector 3 and the half coupling; the rear positioning plate 5 has a connection structure adapted to the tie rod assembly 1; multiple sets of tie rod assemblies 1 are evenly distributed between the front positioning plate 2 and the rear positioning plate 5, the front positioning plate 2 is sleeved on the screw 102 of the tie rod assembly 1 through the through hole 201 and limited by the upper nut 101; the sleeve 4 is set between the front positioning plate 2 and the rear positioning plate 5, the ejector 3 is placed in the sleeve 4, one end of which corresponds to the half coupling and the other end abuts against the rear positioning plate 5; the rear positioning plate 5 is connected and fixed to the end of the screw 102 of the tie rod assembly 1 by the lower nut 103. This tooling, through component collaboration, can stably provide axial tension and precise positioning, realize efficient and precise disassembly of the half coupling, effectively protect the half coupling and pump body and other components, improve disassembly efficiency, reduce labor intensity, has a simple structure, strong practicality, and wide applicability, and can also be extended to the disassembly of similar couplings or shaft components.

[0025] Furthermore, the number of tie rod assemblies 1 is four, and they are evenly distributed circumferentially between the front positioning plate 2 and the rear positioning plate 5. By employing multiple evenly arranged sets, the uniformity of force distribution is ensured, thereby enhancing its load-bearing capacity.

[0026] Furthermore, the screw 102 of the tie rod assembly 1 is made of 45# steel, and the external thread specification at both ends of the screw 102 is M16. By using the above-mentioned materials, its structural strength and stability are enhanced.

[0027] Furthermore, the disc body 202 of the front positioning disc 2 is made of Q235 steel plate by cutting and machining, the positioning structure 203 is a positioning boss adapted to the mounting surface of the axial piston pump, and the diameter of the through hole 201 is adapted to the screw 102. The front positioning disc 2 described above enables reliable positioning of the axial piston pump.

[0028] Furthermore, the ejector 3 is made of 45# steel with a heat treatment process, and its hardness is 230HBW±10HBW. The ejector 3 includes a cylindrical body 301 and an adapter part 302. The diameter of the cylindrical body 301 is adapted to the inner hole of the half coupling, and the adapter part 302 cooperates with the sleeve 4 and the rear positioning plate 5 respectively. The ejector 3 can be adapted to the half coupling.

[0029] Furthermore, the base 402 of the sleeve 4 is made of cast steel, and the inner wall of the receiving cavity 401 of the sleeve 4 is coated with a polytetrafluoroethylene coating with a thickness of 0.5mm ± 0.05mm.

[0030] Furthermore, the rear positioning plate 5 is made of Q235 steel plate, and the connection structure of the rear positioning plate 5 is a connecting hole 501, which is adapted to the screw 102; the rear positioning plate 5 is also provided with a positioning mating part 502, a center hole 503 and a clearance groove 504, the positioning mating part 502 is correspondingly mated with the sleeve 4, the center hole 503 is used to avoid the ejector 3, and the clearance groove 504 is adapted to the half coupling structure.

[0031] Furthermore, both the upper nut 101 and the lower nut 103 are hexagonal nuts, and their thread precision grade matches that of the screw 102. The use of hexagonal nuts enhances its versatility.

[0032] Example 2: Please see Figure 1-6 This embodiment provides a disassembly tool for an axial piston pump half coupling, including four sets of tie rod assemblies 1, a front positioning plate 2, an ejector 3, a sleeve 4, and a rear positioning plate 5.

[0033] Tie rod assembly 1: The screw 102 is machined from 45# steel, with M16 external threads at both ends. The upper nut 101 and the lower nut 103 are adapted to the screw 102 to provide axial tension.

[0034] Front positioning plate 2: The plate body 202 is made of Q235 steel plate and is cut and processed. The diameter of the through hole 201 is adapted to the screw 202. The positioning structure 203 is a positioning boss adapted to the mounting surface of the axial piston pump to achieve precise positioning.

[0035] Ejector 3: Made of 45# steel with heat treatment, hardness of about 230HBW. The diameter of the columnar body 301 is adapted to the inner hole of the half coupling. The adapter part 302 is matched with the sleeve 4 and the rear positioning plate 5.

[0036] Sleeve 4: The seat body 402 is made of cast steel, and the inner wall of the receiving cavity 401 is coated with a 0.5mm thick polytetrafluoroethylene coating to reduce friction.

[0037] Rear positioning plate 5: Made of Q235 steel plate, the connecting hole 501 is adapted to the screw 102, the positioning mating part 502 corresponds to the sleeve 4, the center hole 503 avoids the ejector part 3, and the avoidance groove 504 is adapted to the half coupling structure.

[0038] Four sets of tie rod assemblies 1 are evenly distributed in a circle between the front positioning plate 2 and the rear positioning plate 5. The front positioning plate 2 is fitted onto the screw 102 through the through hole 201 and is limited by the upper nut 101. The sleeve 4 is placed between the front positioning plate 2 and the rear positioning plate 5. The ejector 3 is placed inside the sleeve 4, with one end aligned with the half coupling and the other end abutting against the rear positioning plate 5. The rear positioning plate 5 is fixed to the end of the screw 102 with the lower nut 103.

[0039] Working principle of this utility model: In use, first position and install the front positioning plate 2 with the corresponding part of the axial piston pump via the positioning structure 203. Then, place the sleeve 4 and the ejector 3 in place in sequence, ensuring that the ejector 3 fits into the inner hole of the half coupling. Next, install the rear positioning plate 5 and tighten it with the lower nut 103 of the tie rod assembly 1. Afterward, gradually tighten the upper nut 101 and the lower nut 103 of the tie rod assembly 1. Using the axial tension of the tie rod assembly 1, combined with the pushing action of the ejector 3, the half coupling is smoothly ejected from the axial piston pump, completing the disassembly.

Claims

1. A disassembly tooling for an axial piston pump half-coupling, characterized in that, The assembly includes a pull rod assembly (1), a front positioning plate (2), an ejector (3), a sleeve (4), and a rear positioning plate (5). The rear positioning plate (5) is provided with a connection structure adapted to the pull rod assembly (1). Multiple sets of the pull rod assemblies (1) are evenly distributed between the front positioning plate (2) and the rear positioning plate (5). The front positioning plate (2) is sleeved on the screw (102) of the pull rod assembly (1) through a through hole (201) and is limited by an upper nut (101). The sleeve (4) is set between the front positioning plate (2) and the rear positioning plate (5). The ejector (3) is placed inside the sleeve (4), with one end corresponding to the half coupling and the other end abutting against the rear positioning plate (5). The rear positioning plate (5) is connected and fixed to the end of the screw (102) of the pull rod assembly (1) by a lower nut (103).

2. The disassembly fixture for an axial piston pump half-coupling according to claim 1, characterized in that, The pull rod assembly (1) includes a screw (102), an upper nut (101) and a lower nut (103). The screw (102) has external threads at both ends, and the upper nut (101) and the lower nut (103) are both adapted to the threads of the screw (102).

3. The disassembly fixture for an axial piston pump half-coupling according to claim 2, characterized in that, The number of the pull rod assembly (1) is four, and they are evenly distributed in a circle between the front positioning plate (2) and the rear positioning plate (5).

4. The disassembly fixture for an axial piston pump half-coupling according to claim 2, characterized in that, The screw (102) of the tie rod assembly (1) is made of 45# steel, and the external thread specification at both ends of the screw (102) is M16; Both the upper nut (101) and the lower nut (103) are hexagonal nuts, and their thread accuracy grades match those of the screw (102).

5. The disassembly fixture for an axial piston pump half-coupling according to claim 2, characterized in that, The front positioning plate (2) has a through hole (201) on its plate body (202) that is adapted to the tie rod assembly (1), and the front positioning plate (2) has a positioning structure (203) for cooperating with the corresponding part of the axial piston pump.

6. The disassembly fixture for an axial piston pump half-coupling according to claim 5, characterized in that, The disc body (202) is made of Q235 steel plate by cutting and processing. The positioning structure (203) is a positioning boss that is adapted to the mounting surface of the axial piston pump. The diameter of the through hole (201) is adapted to the screw (102).

7. The disassembly fixture for an axial piston pump half-coupling according to claim 5, characterized in that, The ejector (3) is a columnar structure adapted to the inner hole of the half coupling; The sleeve (4) has a receiving cavity (401) that is adapted to the ejector (3) and the half coupling.

8. The disassembly fixture for an axial piston pump half-coupling according to claim 7, characterized in that, The ejector (3) is made of 45# steel with heat treatment. The hardness of the ejector (3) is 230HBW±10HBW. The ejector (3) includes a columnar body (301) and an adapter (302). The diameter of the columnar body (301) is adapted to the inner hole of the half coupling. The adapter (302) is respectively matched with the sleeve (4) and the rear positioning plate (5).

9. A disassembly fixture for an axial piston pump half-coupling according to claim 7, characterized in that, The sleeve (4) includes a seat body (402), which is made of cast steel. The inner wall of the receiving cavity (401) of the sleeve (4) is coated with a polytetrafluoroethylene coating with a thickness of 0.5mm ± 0.05mm.

10. A disassembly fixture for an axial piston pump half-coupling according to claim 7, characterized in that, The rear positioning plate (5) is made of Q235 steel plate. The connection structure of the rear positioning plate (5) is a connecting hole (501). The connecting hole (501) is adapted to the screw (102). The rear positioning plate (5) is also provided with a positioning mating part (502), a center hole (503) and a clearance groove (504). The positioning mating part (502) is correspondingly mated to the sleeve (4). The center hole (503) is used to avoid the ejector (3). The clearance groove (504) is adapted to the structure of the half coupling.

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