Vertical lossless disassembling and assembling tool for plunger pump rotor assembly

By designing a vertical lossless disassembly tool, using the combination of screw and compression washer, the problem of difficult pressure control and insufficient operating space during disassembly and assembly of the plunger pump rotor assembly is solved, and a safe and simple disassembly and assembly process is achieved.

CN222134060UActive Publication Date: 2024-12-10WUHAN QINLING LINKCO AVIATION POWER SYST CO LTD
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Patent Information

Application Number
CN202420086144.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-01-12
Publication Date
2024-12-10
Estimated Expiration
2034-01-12

AI Technical Summary

Technical Problem

During the disassembly and assembly of the plunger pump rotor assembly, the prior art is difficult to accurately control the pressure of the press bed, which easily leads to damage to the assembly. The press bed is large in size and small in operation space, resulting in difficulty in disassembly and assembly.

Method used

A vertical lossless disassembly tool for plunger pump rotor assembly is designed, including base, screw and compression washer. The design of fixing and compression washer through the thread length of the screw is achieved to achieve suitable compression of the spring washer and through the structure. Simple, small-sized tools prevent components from being damaged.

Benefits of technology

Suitable pressure assembly of spring washer is achieved, avoiding component damage, and providing sufficient operating space, simplifying the disassembly and assembly process.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a vertical lossless disassembling and assembling tool for a plunger pump rotor assembly. The vertical lossless disassembling and assembling tool comprises a base and a screw. An insertion part is formed on the base, the insertion part is used for being inserted into a center hole of a plunger pump rotor assembly, and a fastening screw hole is formed in the base; the screw rod is used for being inserted into the fastening screw hole in a threaded mode, a pressing part is formed on the side wall of the screw rod, and the pressing part is used for being arranged above a spring washer of a plunger pump rotor assembly in a pressing mode. The technical scheme provided by the utility model has the beneficial effects that as the thread length of the screw rod is fixed and the stroke of the spring washer is fixed after the screw rod is tightened, the dismounting and mounting tool can ensure that the spring washer is pressed to reach a proper stroke, and as the lossless dismounting and mounting tool is simple in structure and smaller in size, when the supporting ring is dismounted and mounted, the dismounting and mounting efficiency is greatly improved. The operation space is large, and the supporting ring and the working face of the rotor assembly can be prevented from being damaged.
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Description

Technical Field

[0001] The utility model relates to the technical field of disassembly and assembly of a plunger pump rotor assembly, in particular to a vertical non-destructive disassembly and assembly tool for a plunger pump rotor assembly. Background Art

[0002] The structure of the plunger pump rotor assembly 1 is as follows Figure 1 As shown, it includes a rotor housing 11, a spring 12, a spring washer 13 and a support ring 14. The rotor housing 11 has a center hole 111, a step 112 is formed in the center hole 111, and a limiting groove is provided on the inner wall of the center hole 111. The spring 12 is installed in the center hole 111, one end of the spring 12 abuts against the step 112, the spring washer 13 is pressed on the other end of the spring 12, and the support ring 14 is partially inserted into the limiting groove and abuts against the spring washer 13, so as to prevent the spring washer 13 and the spring 12 from escaping from the center hole 111.

[0003] During the maintenance of various types of oil-cooled combined transmission generators, the spring of the plunger pump rotor assembly 1 needs to be replaced. In the previous disassembly method, a press is required to apply a certain pressure to the spring washer 13 in the center hole 111. At this time, the spring washer 13 is separated from the support ring 14, and then the support ring 14 is taken out. Then the press rises, and the spring washer 13 and the spring 12 are taken out. When installing a new spring 12, the same method is also required to use a press to apply a certain pressure to the spring washer 13 in the center hole 111. In order to ensure that the spring washer 13 is pressed to a suitable stroke, this method has high requirements on the operator's operation. If the press pressure is too large, the rotor assembly will be damaged. If the press pressure is too small, it cannot be effectively disassembled. In addition, due to the large size of the press, the operating space is small when disassembling the support ring 14, which is very easy to cause damage to the support ring 14 and the working surface of the rotor assembly. Utility Model Content

[0004] In view of this, it is necessary to provide a vertical non-destructive disassembly and assembly tool for the plunger pump rotor assembly to solve the technical problems that when the spring of the plunger pump rotor assembly is replaced, the press pressure is difficult to control, which can easily cause damage to the rotor assembly or make it impossible to disassemble and assemble it, and due to the large size of the press, the operating space is small when disassembling and assembling the support ring, which can easily cause damage to the support ring and the working surface of the rotor assembly.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a vertical non-destructive disassembly and assembly tool for a plunger pump rotor assembly, comprising a base and a screw;

[0006] An insertion portion is formed on the base, and the insertion portion is used to be inserted into the central hole of the plunger pump rotor assembly, and a fastening screw hole is opened on the base;

[0007] The screw rod is used for threadedly inserting into the fastening screw hole, and a pressing portion is formed on the side wall of the screw rod, and the pressing portion is used for pressing above the spring washer of the plunger pump rotor assembly.

[0008] In some embodiments, a boss is formed on the base, the inserting portion is formed on the boss, and the size of the boss is larger than the size of the inserting portion.

[0009] In some embodiments, an upper edge of the insert portion is chamfered.

[0010] In some embodiments, the vertical non-destructive disassembly and assembly tool of the plunger pump rotor assembly also includes a clamping washer, the clamping washer is formed with a notch, the clamping washer is used to be sleeved on the screw, one end of the clamping washer is used to abut against the clamping part, and the other end of the clamping washer is used to abut against the spring washer.

[0011] In some embodiments, the compression washer includes an upper half ring and a lower half ring fixedly connected, the upper half ring is used to abut against the compression portion, the lower half ring is used to abut against the spring washer, and the radius of the upper half ring is smaller than the radius of the lower half ring.

[0012] In some embodiments, the upper half ring is integrally formed with the lower half ring.

[0013] In some embodiments, the vertical non-destructive disassembly and assembly tool for the plunger pump rotor assembly also includes a block, a thread matching the fastening screw hole is formed on the outer wall of the block, and the block is threadedly connected to the fastening screw hole.

[0014] In some embodiments, a plug hole is provided on the stopper, and the plug hole is non-circular.

[0015] In some embodiments, the insertion hole is opened on the lower end surface of the stopper.

[0016] In some embodiments, the socket is square in shape.

[0017] Compared with the prior art, the beneficial effect of the technical solution proposed by the utility model is that when it is necessary to disassemble the spring of the plunger pump rotor assembly, the center hole of the plunger pump rotor assembly is first passed through the insertion part, so as to position the plunger pump rotor assembly through the insertion part, and then the screw is passed through the center hole and screwed into the fastening screw hole of the base, so as to apply a certain pressure to the spring washer through the clamping part. At this time, the spring washer is separated from the support ring, and then the support ring is taken out, and then the screw is screwed out, and the spring washer and the spring are taken out, so as to realize the disassembly of the spring, and when installing a new spring, the operation method is similar; since the thread length of the screw is fixed, the stroke of the spring washer is fixed after tightening the screw, therefore, the use of the disassembly and assembly tool can ensure that the spring washer is pressed to a suitable stroke, and since the non-destructive disassembly and assembly tool has a simple structure and a small size, the operating space is large when disassembling the support ring, which can prevent damage to the support ring and the working surface of the rotor assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the plunger pump rotor assembly;

[0019] Figure 2 It is a three-dimensional structural schematic diagram of an embodiment of a vertical non-destructive disassembly and assembly tool for a plunger pump rotor assembly provided by the utility model;

[0020] Figure 3 yes Figure 2 The main view;

[0021] Figure 4 yes Figure 3 Sectional view of mid-section AA;

[0022] Figure 5 yes Figure 4 Reference diagram of the use status of the vertical non-destructive disassembly and assembly tool for the plunger pump rotor assembly;

[0023] Figure 6 yes Figure 3 A schematic diagram of the three-dimensional structure of the compression washer;

[0024] In the figure: 1- plunger pump rotor assembly, 11- rotor housing, 111- center hole, 112- step, 12- spring, 13- spring washer, 14- support ring, 2- plunger pump rotor assembly vertical non-destructive disassembly tool, 21- base, 211- insertion part, 212- fastening screw hole, 213- boss, 22- screw, 221- clamping part, 23- clamping washer, 231- notch, 232- upper half ring, 233- lower half ring, 24- block, 241- socket. DETAILED DESCRIPTION

[0025] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the present application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0026] Please refer to Figure 2-Figure 5 The utility model provides a vertical non-destructive disassembly and assembly tool 2 for a plunger pump rotor assembly, comprising a base 21 and a screw 22;

[0027] The base 21 is formed with an insertion portion 211, and the insertion portion 211 is used to be inserted into the central hole 111 of the plunger pump rotor assembly 1. The base 21 is provided with a fastening screw hole 212;

[0028] The screw rod 22 is threadably inserted into the fastening screw hole 212 . A pressing portion 221 is formed on the side wall of the screw rod 22 . The pressing portion 221 is pressed onto the spring washer 13 of the plunger pump rotor assembly 1 .

[0029] When the spring 12 of the plunger pump rotor assembly 1 needs to be removed, firstly, the center hole 111 of the plunger pump rotor assembly 1 is inserted into the insertion portion 211 (the mounting surface of the support ring 14 faces upward), so as to position the plunger pump rotor assembly 1 through the insertion portion 211, and then the screw 22 is passed through the center hole 111 and screwed into the fastening screw hole 212 of the base 21, so as to apply a certain pressure to the spring washer 13 through the pressing portion 221. At this time, the spring washer 13 is separated from the support ring 14, and then the support ring 14 is taken out and then screwed out. The screw 22 is used to take out the spring washer 13 and the spring 12, thereby realizing the disassembly of the spring 12. When installing a new spring 12, the operation method is similar. Since the thread length of the screw 22 is fixed, after tightening the screw 22, the stroke of the spring washer 13 is fixed. Therefore, the use of the disassembly tool can ensure that the spring washer 13 is pressed to achieve a suitable stroke. Moreover, since the non-destructive disassembly tool has a simple structure and a small size, when disassembling the support ring 14, the operating space is large, which can prevent damage to the support ring 14 and the working surface of the rotor assembly.

[0030] To facilitate the removal of the plunger pump rotor assembly 1, please refer to Figure 2-Figure 5 In a preferred embodiment, a boss 213 is formed on the base 21, and the insertion portion 211 is formed on the boss 213. The size of the boss 213 is larger than the size of the insertion portion 211. After the rotor housing 11 is inserted into the insertion portion 211, the boss 213 can be easily taken out.

[0031] To avoid injury to personnel during operation, please refer to Figure 2 and Figure 4 In a preferred embodiment, the upper edge of the inserting portion 211 is chamfered.

[0032] To facilitate the disassembly and assembly of the support ring 14, please refer to Figure 2-Figure 6 In a preferred embodiment, the plunger pump rotor assembly vertical non-destructive disassembly tool 2 also includes a clamping washer 23, and the clamping washer 23 is formed with a notch 231. The clamping washer 23 is used to be sleeved on the screw 22, and one end of the clamping washer 23 is used to abut against the clamping portion 221, and the other end of the clamping washer 23 is used to abut against the spring washer 13. When in use, the screw 22 is rotated to move the clamping portion 221 downward, thereby applying pressure to the clamping washer 23, and the clamping washer 23 applies pressure to the spring washer 13. After being pressed into place, the support ring 14 is disassembled and assembled through the notch 231 of the clamping washer 23, so that the support ring 14 can be easily disassembled and assembled by setting the notch 231.

[0033] To further facilitate the disassembly and assembly of the support ring 14, please refer to Figure 2-Figure 6 In a preferred embodiment, the clamping washer 23 includes an upper half ring 232 and a lower half ring 233 that are fixedly connected. The upper half ring 232 is used to abut against the clamping portion 221, and the lower half ring 233 is used to abut against the spring washer 13. The radius of the upper half ring 232 is smaller than the radius of the lower half ring 233. By reducing the radius of the upper half ring 232, the support ring 14 can be easily disassembled and assembled.

[0034] To facilitate the processing of the compression washer 23, please refer to Figure 6 In a preferred embodiment, the upper half ring 232 and the lower half ring 233 are integrally formed.

[0035] In order to conveniently control the screwing depth of the screw rod 22, please refer to Figure 4 and Figure 5 In a preferred embodiment, the plunger pump rotor assembly vertical non-destructive disassembly tool 2 further includes a stopper 24, a thread matching the fastening screw hole 212 is formed on the outer wall of the stopper 24, and the stopper 24 is threadedly connected in the fastening screw hole 212. When in use, the position of the stopper 24 can be adjusted. When the screw rod 22 is screwed into the fastening screw hole 212, once the lower end of the screw rod 22 abuts against the stopper 24, it cannot be screwed in further, so that the screwing depth of the screw rod 22 can be controlled.

[0036] In order to facilitate screwing the stopper 24 into the fastening screw hole 212, please refer to Figure 4 and Figure 5 In a preferred embodiment, the stopper 24 is provided with a plug hole 241, and the plug hole 241 is non-circular. Thus, when in use, the stopper 24 can be rotated by a screwdriver matched with the plug hole 241.

[0037] To facilitate screwing in the stopper 24, refer to Figure 4 and Figure 5 In a preferred embodiment, the insertion hole 241 is opened on the lower end surface of the stopper 24.

[0038] To implement the function of the jack 241, please refer to Figure 4 and Figure 5 In a preferred embodiment, the plug hole 241 is in a square shape. It should be understood that the plug hole 241 may also be in other non-circular shapes.

[0039] In addition, the vertical non-destructive disassembly and assembly tool for the plunger pump rotor assembly provided by the utility model is a vertical structure. To ensure sufficient strength, all parts are made of 45 steel with a heat treatment hardness of HRC35 to 40. The clamping washer 23 is an open structure to ensure that the spring washer 13 has sufficient operating space after press-fitting.

[0040] The dimensions of each component of the present invention need to be customized according to the dimensions of a specific plunger pump rotor assembly, and plunger pump rotor assemblies 1 of other different models can be non-destructively disassembled and assembled by replacing compression washers 23 of different sizes.

[0041] In order to better understand the present invention, the following Figure 1-Figure 6 The working process of the vertical non-destructive disassembly and assembly tool for the plunger pump rotor assembly provided by the utility model is described in detail: when it is necessary to disassemble the spring 12 of the plunger pump rotor assembly 1, firstly, the center hole 111 of the plunger pump rotor assembly 1 is passed through the insertion portion 211 (the mounting surface of the support ring 14 faces upward), so as to position the plunger pump rotor assembly 1 through the insertion portion 211, and then the clamping washer 23 is placed above the spring washer 13, and then the screw 22 is passed through the clamping washer 23, the spring washer 13, the spring 12 and the center hole 111, and then screwed into the fastening screw hole 212 of the base 21 until the lower end of the screw 22 abuts against the stopper 24, thereby passing through the clamping washer 2 3 applies a certain pressure to the spring washer 13, at this time, the spring washer 13 is separated from the support ring 14, and then the support ring 14 is taken out, and then the screw 22 is screwed out, and the spring washer 13 and the spring 12 are taken out, so as to realize the disassembly of the spring 12. When installing a new spring 12, the operation method is similar; since the position of the block 24 is fixed, after tightening the screw 22, the stroke of the spring washer 13 is fixed, therefore, the use of the disassembly tool can ensure that the spring washer 13 is pressed to reach a suitable stroke, and since the non-destructive disassembly tool has a simple structure and a small size, when disassembling the support ring 14, the operating space is large, which can prevent the support ring 14 and the working surface of the rotor assembly from being damaged.

[0042] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the present invention should be included in the protection scope of the present invention.

Claims

1. A vertical non-destructive disassembly and assembly tool for a plunger pump rotor assembly, characterized in that: include: A base, wherein an insertion portion is formed on the base, wherein the insertion portion is used to be inserted into the central hole of the plunger pump rotor assembly, and a fastening screw hole is formed on the base; and, A screw rod is used for being threadedly inserted into the fastening screw hole, and a clamping portion is formed on the side wall of the screw rod, and the clamping portion is used for being pressed above the spring washer of the plunger pump rotor assembly.

2. The vertical non-destructive disassembly and assembly tool for the plunger pump rotor assembly according to claim 1, characterized in that: A boss is formed on the base, the inserting portion is formed on the boss, and the size of the boss is larger than the size of the inserting portion.

3. The vertical non-destructive disassembly and assembly tool for the plunger pump rotor assembly according to claim 1, characterized in that: An upper edge of the inserting portion is formed with a chamfer.

4. The vertical non-destructive disassembly and assembly tool for the plunger pump rotor assembly according to claim 1, characterized in that: The vertical non-destructive disassembly and assembly tool of the plunger pump rotor assembly also includes a clamping washer, which is formed with a notch. The clamping washer is used to be sleeved on the screw rod, one end of the clamping washer is used to abut against the clamping part, and the other end of the clamping washer is used to abut against the spring washer.

5. The vertical non-destructive disassembly and assembly tool for the plunger pump rotor assembly according to claim 4, characterized in that: The compression washer comprises an upper half ring and a lower half ring which are fixedly connected, the upper half ring is used to abut against the compression portion, and the lower half ring is used to abut against the spring washer, and the radius of the upper half ring is smaller than the radius of the lower half ring.

6. The vertical non-destructive disassembly and assembly tool for the plunger pump rotor assembly according to claim 5, characterized in that: The upper half ring and the lower half ring are integrally formed.

7. The vertical non-destructive disassembly and assembly tool for the plunger pump rotor assembly according to claim 1, characterized in that: The vertical non-destructive disassembly and assembly tool for the plunger pump rotor assembly also includes a stopper, on the outer wall of which a thread matching the fastening screw hole is formed, and the stopper is threadedly connected to the fastening screw hole.

8. The vertical non-destructive disassembly and assembly tool for the plunger pump rotor assembly according to claim 7, characterized in that: The stopper is provided with an insertion hole, and the insertion hole is non-circular.

9. The vertical non-destructive disassembly and assembly tool for the plunger pump rotor assembly according to claim 8, characterized in that: The insertion hole is arranged on the lower end surface of the stopper.

10. The vertical non-destructive disassembly and assembly tool for the plunger pump rotor assembly according to claim 8, characterized in that: The shape of the jack is square.