Gear pump oil way running-in mechanism

Abstract

The utility model relates to the field of gear pumps, and discloses a gear pump oil way running-in mechanism. A pump body pre-assembling tool is installed at the bottom end of the pump body positioning cavity, a lifting base is fixedly installed on the side edge of the pump body pre-assembling tool, a low-pressure plugging head is arranged below the pump body pre-assembling tool, an oil inlet plugging head is fixedly installed below the low-pressure plugging head, and a high-pressure plugging connector is formed in the bottom end of the oil inlet plugging head. Firstly, the pre-assembly tool is attached to the surface of the pump body, and the plane needs to be controlled, so that no oil leaks in the high-pressure oil passing process of the pump body; oil is supplied in the rotating process, so that oil passing load rotation is achieved. And the gear is subjected to clearance running-in in a high-pressure state in the oil passing process. And running-in is completed after 5 minutes. And in the running-in process, the transmission torque and the pressure of oil in a pipeline are accurately monitored. Therefore, the gear clearance running-in of the high-pressure gear and the low-pressure gear is realized, the pressure and the transmission torque in the running-in process can be accurately displayed, and the accuracy in the use process is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of gear pumps, in particular to an oil circuit running-in mechanism for a gear pump. Background Art

[0002] Gear pump is a commonly used hydraulic pump, which plays an extremely important role in hydraulic system. Gear pump is a rotary pump that relies on the change and movement of working volume formed between pump cylinder and meshing gear to transport liquid or increase pressure. Two closed spaces are formed by two gears, pump body and front and rear covers. When the gear rotates, the volume of the space on the gear disengagement side changes from small to large, forming a vacuum, sucking the liquid, and the volume of the space on the gear meshing side changes from large to small, squeezing the liquid into the pipeline. The suction chamber and the discharge chamber are separated by the meshing line of the two gears. The pressure of the discharge port of the gear pump depends entirely on the size of the resistance at the pump outlet. The oil circuit running-in mechanism is used during the use of the gear pump.

[0003] However, the common oil circuit running-in mechanism cannot accurately display the pressure and transmission torque during the running-in process. Utility Model Content

[0004] The purpose of the utility model is to provide a gear pump oil circuit running-in mechanism in order to solve the problem that the common oil circuit running-in mechanism mentioned above cannot accurately display the pressure and transmission torque during the running-in process.

[0005] The technical solution adopted by the utility model is as follows: a gear pump oil circuit running-in mechanism, including a gas-liquid booster pressing cylinder, an elastic torque rotating shaft module is arranged below the gas-liquid booster pressing cylinder, a pump body pre-assembly tooling is installed at the bottom end of the elastic torque rotating shaft module, a lifting base is fixedly installed on the side of the pump body pre-assembly tooling, a low-pressure plugging head is arranged below the pump body pre-assembly tooling, an oil inlet plugging head is fixedly installed below the low-pressure plugging head, and a high-pressure plugging interface is arranged at the bottom end of the oil inlet plugging head, and the pump body is placed in the pump body positioning cavity, and the pre-assembly tooling is first fitted with the pump body surface, and the plane needs to be controlled so that the pump body has no oil leakage during the high-pressure oil flow. Then the lifting base superimposes the elastic torque rotating shaft module on the pre-assembly tooling, and the elastic shaft is inserted into the rotating shaft slot of the pre-assembly tooling. The driving motor rotates to drive the gear in the pump body to rotate. During the rotation process, oil is supplied to realize the rotation of the oil flow load. The gear is gap-runned under high pressure during the oil flow process. The running-in is completed after 5 minutes. During the running-in process, the transmission torque and the pressure of the oil in the pipeline are accurately monitored. This enables the mechanism to run-in the gear clearance of the high and low pressure gears, and can accurately display the pressure and transmission torque during the running-in process, improving the accuracy during use, while shortening the running-in time, improving the running-in efficiency of the overall gear pump oil circuit, and bringing more convenience to people's use.

[0006] In a preferred embodiment, a shaft spacer is arranged inside the pump body pre-assembly tooling, a high-speed rotating shaft seal is arranged at the outer end of the center shaft of the shaft spacer, and a bearing is arranged opposite to the shaft spacer and the high-speed rotating shaft seal.

[0007] In a preferred embodiment, the outer surface of the rotating shaft spacer is provided with a pump body fitting surface, and the front side of the pump body fitting surface is provided with a driven gear connected to the rotating shaft.

[0008] In a preferred embodiment, a transmission belt is provided at the top of the elastic torque rotating shaft module, a mechanical torque protector is provided below the transmission belt, and a rotating motor is fixedly installed on the back of the mechanical torque protector.

[0009] In a preferred embodiment, a transmission coupling is arranged below the mechanical torque protector, and an elastic downward pressure cylinder is arranged on the front of the transmission coupling.

[0010] In a preferred embodiment, a spring is arranged below the transmission coupling, a position detection sensor is arranged on the front of the spring, and a torque sensor is arranged on the front of the mechanical torque protector.

[0011] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0012] In the utility model, the pump body is placed in the pump body positioning cavity, and the pre-assembled tooling is first fitted with the surface of the pump body. The plane needs to be controlled so that there is no oil leakage in the pump body during the high-pressure oil flow. Then the lifting base superimposes the elastic torque rotating shaft module on the pre-assembled tooling, and the elastic shaft is inserted into the rotating shaft notch of the pre-assembled tooling. The drive motor rotates to drive the gears in the pump body to rotate. During the rotation process, oil is supplied to realize the rotation of the oil flow load. The gears are gap-runned under high pressure during the oil flow process. The running-in is completed after 5 minutes. During the running-in process, the transmission torque and the pressure of the oil in the pipeline are accurately monitored. Thereby, this set of mechanisms can realize the gap running-in of the high and low pressure gears, and can accurately display the pressure and transmission torque during the running-in process, which improves the accuracy during use, while shortening the running-in time, improving the overall gear pump oil circuit running-in efficiency, and bringing more convenience to people's use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the running-in mechanism structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the pump body pre-assembly tooling structure in the utility model;

[0015] Figure 3 It is a schematic diagram of the structure of the elastic torque rotating shaft module in the utility model.

[0016] Markings in the figure: 1. Gas-liquid booster pressing cylinder; 2. Elastic torque rotating shaft module; 3. Lifting base; 4. Pump body pre-assembly tooling; 5. Oil inlet sealing head; 6. High-pressure sealing interface; 7. Low-pressure sealing head; 11. Rotating shaft spacer; 12. Driven gear connecting the rotating shaft; 13. Pump body fitting surface; 14. High-speed rotating shaft seal; 15. Bearing; 16. Transmission belt; 17. Elastic downward pressure cylinder; 18. In-place detection sensor; 19, Rotating motor; 110. Mechanical torque protector; 111. Torque sensor; 112. Transmission coupling; 113. Spring. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model will be clearly and completely described below in combination with the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] Reference Figure 1-3 ,

[0019] Example:

[0020] A gear pump oil circuit running-in mechanism comprises a gas-liquid booster pressing cylinder 1, an elastic torque rotating shaft module 2 is arranged below the gas-liquid booster pressing cylinder 1, a pump body pre-assembly tool 4 is installed at the bottom end of the elastic torque rotating shaft module 2, the pump body is placed in the pump body positioning cavity, the pre-assembly tool is first fitted with the pump body surface, and the plane needs to be controlled so that the pump body has no oil leakage during the high-pressure oil flow. Then the lifting base superimposes the elastic torque rotating shaft module on the pre-assembly tool, and the elastic shaft is inserted into the rotating shaft notch of the pre-assembly tool. The driving motor rotates to drive the gear in the pump body to rotate. The side of the pump body pre-assembly tool 4 is fixedly installed with a lifting base 3, a low-pressure plugging head 7 is arranged below the pump body pre-assembly tool 4, an oil inlet plugging head 5 is fixedly installed below the low-pressure plugging head 7, and a high-pressure plugging interface 6 is arranged at the bottom end of the oil inlet plugging head 5, and oil is supplied during the rotation process to realize the oil flow load rotation. The gear is gap-runned under high pressure during the oil flow process. The running-in is completed after 5 minutes. During the running-in process, the transmission torque and the pressure of the oil in the pipeline are accurately monitored. This enables the mechanism to run-in the gear clearance of the high and low pressure gears, and can accurately display the pressure and transmission torque during the running-in process, improving the accuracy during use, while shortening the running-in time, improving the running-in efficiency of the overall gear pump oil circuit, and bringing more convenience to people's use.

[0021] A shaft spacer 11 is arranged inside the pump body pre-assembly tooling 4 , a high-speed rotating shaft seal 14 is arranged at the outer end of the middle axis of the shaft spacer 11 , and a bearing 15 is arranged at a position opposite to the shaft spacer 11 and the high-speed rotating shaft seal 14 .

[0022] The outer surface of the rotating shaft spacer 11 is provided with a pump body fitting surface 13 , and the front side of the pump body fitting surface 13 is provided with a driven gear connecting the rotating shaft 12 .

[0023] A transmission belt 16 is disposed at the top of the elastic torque rotating shaft module 2 , a mechanical torque protector 110 is disposed below the transmission belt 16 , and a rotating motor 19 is fixedly mounted on the back of the mechanical torque protector 110 .

[0024] A transmission coupling 112 is disposed below the mechanical torque protector 110 , and an elastic downward-pressing cylinder 17 is disposed on the front of the transmission coupling 112 .

[0025] A spring 113 is provided below the transmission coupling 112 , and an in-position detection sensor 18 is provided on the front side of the spring 113 .

[0026] A torque sensor 111 is disposed on the front side of the mechanical torque protector 110 .

[0027] In the utility model, the pump body is placed in the pump body positioning cavity, and the pre-assembled tooling is first fitted with the surface of the pump body. The plane needs to be controlled so that there is no oil leakage in the pump body during the high-pressure oil flow. Then the lifting base superimposes the elastic torque rotating shaft module on the pre-assembled tooling, and the elastic shaft is inserted into the rotating shaft notch of the pre-assembled tooling. The drive motor rotates to drive the gears in the pump body to rotate. During the rotation process, oil is supplied to realize the rotation of the oil flow load. The gears are gap-runned under high pressure during the oil flow process. The running-in is completed after 5 minutes. During the running-in process, the transmission torque and the pressure of the oil in the pipeline are accurately monitored. Thereby, this set of mechanisms can realize the gap running-in of the high and low pressure gears, and can accurately display the pressure and transmission torque during the running-in process, which improves the accuracy during use, while shortening the running-in time, improving the overall gear pump oil circuit running-in efficiency, and bringing more convenience to people's use.

[0028] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A gear pump oil circuit running-in mechanism, comprising a gas-liquid booster pressing cylinder (1), characterized in that: An elastic torque rotating shaft module (2) is arranged below the gas-liquid boosting pressing cylinder (1), a pump body pre-assembly tool (4) is installed at the bottom end of the elastic torque rotating shaft module (2), a lifting base (3) is fixedly installed on the side of the pump body pre-assembly tool (4), a low-pressure plugging head (7) is arranged below the pump body pre-assembly tool (4), an oil inlet plugging head (5) is fixedly installed below the low-pressure plugging head (7), and a high-pressure plugging interface (6) is arranged at the bottom end of the oil inlet plugging head (5).

2. A gear pump oil circuit running-in mechanism as claimed in claim 1, characterized in that: A rotating shaft spacer (11) is arranged inside the pump body pre-assembly tooling (4), a high-speed rotating shaft seal (14) is arranged at the outer end of the middle shaft of the rotating shaft spacer (11), and a bearing (15) is arranged at a position opposite to the rotating shaft spacer (11) and the high-speed rotating shaft seal (14).

3. A gear pump oil circuit running-in mechanism as claimed in claim 2, characterized in that: The outer surface of the rotating shaft spacer (11) is provided with a pump body fitting surface (13), and the front surface of the pump body fitting surface (13) is provided with a driven gear connected to the rotating shaft (12).

4. A gear pump oil circuit running-in mechanism as claimed in claim 1, characterized in that: A transmission belt (16) is arranged at the top of the elastic torque rotating shaft module (2), a mechanical torque protector (110) is arranged below the transmission belt (16), and a rotating motor (19) is fixedly mounted on the back of the mechanical torque protector (110).

5. A gear pump oil circuit running-in mechanism as claimed in claim 4, characterized in that: A transmission coupling (112) is arranged below the mechanical torque protector (110), and an elastic downward-pressing cylinder (17) is arranged on the front side of the transmission coupling (112).

6. A gear pump oil circuit running-in mechanism as claimed in claim 5, characterized in that: A spring (113) is provided below the transmission coupling (112), and an in-position detection sensor (18) is provided on the front side of the spring (113).

7. A gear pump oil circuit running-in mechanism as claimed in claim 5, characterized in that: A torque sensor (111) is arranged on the front side of the mechanical torque protector (110).

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