Safe and efficient pulling and dismounting tool special for ratchet wheel of hydraulic coaxial pump
By using a semi-circular clamp and clamp fasteners in conjunction with hexagonal socket screws, the problem of difficult ratchet disassembly in hydraulic coaxial pumps is solved, achieving safe and efficient ratchet disengagement and avoiding the defects of traditional methods.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-18
- Publication Date
- 2026-03-03
AI Technical Summary
The ratchet of the hydraulic coaxial pump is difficult to disassemble. The drive shaft positioning component is interference-fitted with the ratchet, resulting in high torque. The cutting tool is prone to breakage and slippage due to the lack of a fixed point, which can damage the machine parts.
Two semi-circular clamps are used to fix the bottom of the ratchet. By using the cooperation of the clamp fasteners and the internal hex screws, the ratchet is disengaged from the coaxial pump drive shaft through the reverse force.
It achieves safe, reliable, simple and efficient ratchet disassembly, avoiding the problems of tool breakage and machine damage in traditional methods.
Smart Images
Figure CN223961242U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of mechanical equipment technology, and more specifically, to a safe and efficient special tool for removing the ratchet of a hydraulic coaxial pump. Background Technology
[0002] The hydraulic coaxial pump is a gear pump driven by the left input transmission device of the main reducer. It consists of a left hydraulic pump and an auxiliary system hydraulic pump driven by the same shaft. Its function is to reliably and stably deliver hydraulic oil of a certain flow rate and pressure to their respective hydraulic systems. Due to its short service life, it is an accessory that often needs to be replaced in field operations.
[0003] Currently, the drive shaft positioning component and ratchet of the hydraulic coaxial pump are interference-fitted, with small clearance and large torque. Disassembling the ratchet of the coaxial pump in field operations is very difficult. In the past, the ratchet disassembly process mostly required placing multiple cutting tools under the ratchet and using leverage to pry it out. During the prying process, the cutting tools are easy to break due to their low metal strength, high pressure, and lack of reliable fixing points, which can easily slip out and cause collateral damage to the machine parts. Therefore, in view of this, we have studied and improved the existing structure to provide a safe and efficient special tool for removing the ratchet of the hydraulic coaxial pump, in order to achieve a more practical purpose. Utility Model Content
[0004] 1. Technical problems to be solved
[0005] To address the problems existing in the prior art, the purpose of this utility model is to provide a safe and efficient special tool for removing the ratchet of a hydraulic coaxial pump. It can use two semi-circular clamps to clamp and fix the bottom of the ratchet, and then use clamp fasteners to fix the two semi-circular clamps. Finally, with the cooperation of the hexagonal screw and the base, the clamp assembly fixing the ratchet gradually moves upward under the action of the reverse force and the upward axial force generated by the clamp fasteners, so as to completely disengage the ratchet from the coaxial pump drive shaft. The whole operation is safe, reliable, simple and efficient, and effectively solves the problem of difficult removal of the ratchet of the hydraulic coaxial pump.
[0006] 2. Technical Solution
[0007] To solve the above problems, the present invention adopts the following technical solution.
[0008] A safe and efficient hydraulic coaxial pump ratchet removal tool includes a base, a clamp assembly on the top of the base, a clamp fastener threaded to the outer periphery of the clamp assembly, and an internal hexagon screw threaded to the top of the clamp fastener. The bottom end of the threaded portion of the internal hexagon screw extends to the bottom of the clamp fastener and contacts the top surface of the base.
[0009] The clamp assembly consists of two semi-circular clamps, which are combined to form a hollow tubular structure. A stop block is fixedly connected to the inner wall of the semi-circular clamp.
[0010] Furthermore, the base has a ring-shaped structure, and the inner diameter of the base is adapted to the outer diameter of the clamp assembly composed of two semi-circular clamps.
[0011] Furthermore, the clamp fastener has a circular ring structure, and the inner sidewall of the clamp fastener is provided with internal threads.
[0012] Furthermore, the outer periphery of the two semi-circular clamps is provided with external threads that are compatible with the internal threads on the inner sidewall of the clamp fastener, and the inner sidewall of the clamp fastener is connected to the outer periphery of the semi-circular clamp through the internal and external threads.
[0013] Furthermore, the clamp fastener has four threaded holes on its top, and the four threaded holes are distributed in a ring at equal intervals.
[0014] Furthermore, the clamp fastener is connected to the outer circumferential thread of the corresponding internal hexagon screw through a threaded hole.
[0015] 3. Beneficial effects
[0016] Compared with existing technologies, the advantages of this utility model are:
[0017] This solution uses two semi-circular clamps to secure and align the bottom of the ratchet. The internal threads of the clamp fasteners are then screwed clockwise onto the external threads of the two semi-circular clamp assemblies and positioned at the bottom of the clamp assembly. The four hexagonal socket screws on the clamp fasteners are screwed downwards until they contact the base. The downward movement of the hexagonal socket screws is then stopped by the contact with the base. Under the action of the counterforce, the clamp assembly fixing the ratchet gradually moves upwards as the clamp fasteners generate an upward axial force, achieving complete disengagement of the ratchet from the coaxial pump drive shaft. The entire operation is safe, reliable, simple, and efficient, effectively solving the problem of difficult ratchet disassembly in hydraulic coaxial pumps. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0019] Figure 2 This is a schematic diagram of the base structure of this utility model;
[0020] Figure 3 This is a schematic diagram of the clamp assembly structure of this utility model;
[0021] Figure 4 This is a schematic diagram of the clamp fastener structure of this utility model.
[0022] Explanation of the labels in the diagram:
[0023] 1. Base;
[0024] 2. Clamp assembly; 201. Semi-circular clamp; 202. Stop block;
[0025] 3. Clamping fasteners;
[0026] 4. Socket head screws. Detailed Implementation
[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.
[0028] Example:
[0029] Please see Figures 1-4 A safe and efficient hydraulic coaxial pump ratchet removal tool includes a base 1, a clamp assembly 2 is provided on the top of the base 1, a clamp fastener 3 is threadedly connected to the outer periphery of the clamp assembly 2, and an internal hex screw 4 is threadedly connected to the top of the clamp fastener 3. The bottom end of the threaded part of the internal hex screw 4 extends to the bottom of the clamp fastener 3 and contacts and connects with the top surface of the base 1.
[0030] The clamp assembly 2 consists of two semi-circular clamps 201, and the two semi-circular clamps 201 are combined to form a hollow tubular structure. A stop block 202 is fixedly connected to the inner wall of the semi-circular clamp 201.
[0031] See Figure 1 and Figure 2 The base 1 has a circular structure, and the inner diameter of the base 1 is adapted to the outer diameter of the clamp assembly 2 composed of two semi-circular clamps 201.
[0032] See Figure 4 The clamp fastener 3 has a circular ring structure, and the inner side wall of the clamp fastener 3 is provided with internal threads.
[0033] See Figure 3 The outer periphery of the two semi-circular clamps 201 is provided with external threads that are compatible with the internal threads on the inner sidewall of the clamp fastener 3. The inner sidewall of the clamp fastener 3 is connected to the outer periphery thread of the semi-circular clamps 201 through the internal and external threads.
[0034] See Figure 1 The clamp fastener 3 has four threaded holes on its top, and the four threaded holes are distributed in a ring at equal intervals.
[0035] See Figure 1 and Figure 4 The clamp fastener 3 is connected to the outer circumferential thread of the corresponding internal hexagon screw 4 through the threaded hole. When using it, when tightening the four internal hexagon screws 4, tighten them diagonally and apply force evenly to prevent damage to the working surface and ratchet due to uneven force on the semi-circular clamp 201.
[0036] Working principle: First, after removing the hydraulic coaxial pump from the machine parts as required, seal and wrap the pipelines and joints, place the workpiece on the workbench with the ratchet and drive shaft facing upwards, and place the base 1 on the plane of the coaxial pump to prevent the workpiece from damaging the surface of the coaxial pump during operation.
[0037] Then, fix the two semi-circular clamps 201 to the bottom of the ratchet, so that the stop block 202 is installed in the ratchet groove and the threads are aligned;
[0038] Next, the clamp fastener 3 is installed on the external thread of the semi-circular clamp 201 and screwed in at a height of about 1.5cm from the base 1. Then, four hexagon socket screws 4 are installed in the clamp fastener 3 and made to fit tightly against the top surface of the base 1. The four hexagon socket screws 4 are tightened diagonally. At this time, the downward movement of the hexagon socket screws 4 is stopped due to contact with the base 1. The clamp assembly 2 that fixes the ratchet moves upward under the action of the reverse force as the clamp fastener 3 generates an upward axial force, and finally the ratchet is completely disengaged from the coaxial pump drive shaft. The whole operation is safe, reliable, simple and efficient, and effectively solves the problem of the difficulty in disassembling the ratchet of the hydraulic coaxial pump.
[0039] Finally, it should be noted that in the description of this utility model, the terms "vertical," "upper," "lower," "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0040] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0041] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.
Claims
1. A safe and efficient hydraulic coaxial pump ratchet special pulling and removing tool, comprising a base (1), characterized in that: The top of the base (1) is provided with a clamp assembly (2), the outer periphery of the clamp assembly (2) is threadedly connected with a clamp fastener (3), the top of the clamp fastener (3) is threadedly connected with an internal hexagonal screw (4), the threaded part of the internal hexagonal screw (4) extends to the bottom of the clamp fastener (3) and is in contact connection with the top surface of the base (1). The clamp assembly (2) is composed of two semicircular clamps (201), and the two semicircular clamps (201) are combined to form a hollow tubular structure, and the inner side wall of the semicircular clamp (201) is fixedly connected with a stop block (202).
2. A safe and efficient hydraulic coaxial pump ratchet special pulling and removing tool according to claim 1, characterized in that: The base (1) is a circular ring structure, and the inner diameter of the base (1) is matched with the outer diameter of the clamp assembly (2) composed of two semicircular clamps (201).
3. A safe and efficient hydraulic coaxial pump ratchet special pulling and removing tool according to claim 1, characterized in that: The clamp fastener (3) is a circular ring structure, and the inner side wall of the clamp fastener (3) is provided with internal threads.
4. A safe and efficient hydraulic coaxial pump ratchet special pulling and removing tool according to claim 1, characterized in that: The outer periphery of the two semicircular clamps (201) is provided with external threads matched with the internal threads on the inner side wall of the clamp fastener (3), and the inner side wall of the clamp fastener (3) is threadedly connected with the outer periphery of the semicircular clamps (201) through the internal threads and the external threads.
5. A safe and efficient hydraulic coaxial pump ratchet special pulling and removing tool according to claim 1, characterized in that: The top of the clamp fastener (3) is provided with four threaded holes, and the four threaded holes are annularly and equidistantly distributed.
6. A safe and efficient hydraulic coaxial pump ratchet special pulling and removing tool according to claim 1, characterized in that: The clamp fastener (3) is threadedly connected with the threaded part of the corresponding internal hexagonal screw (4) through the threaded hole.