Power steering oil pump air tightness test tool

Abstract

The utility model discloses a gas tightness detection tool for a power steering oil pump, comprising a positioning component, a locking screw threadedly connected to the positioning component, and a sealing component arranged on the locking screw and used to contact the end face of an oil inlet pipe joint of the power steering oil pump, an air inlet channel for guiding gas to the oil inlet pipe joint is arranged inside the locking screw, and a positioning hole for the oil inlet pipe joint to be embedded is arranged on the positioning component. The gas tightness detection tool for the power steering oil pump of the utility model is simple to operate, and only needs to be placed in the oil inlet pipe positioning hole and the locking screw is tightened by hand to perform the detection, which can reduce the occurrence of air leakage caused by human tightening factors and improve the gas tightness detection efficiency of the power steering oil pump.

Description

Technical Field

[0001] The utility model belongs to the technical field of vehicle steering systems, and in particular relates to an air tightness detection tool for a steering booster oil pump. Background Art

[0002] The existing method for testing the air tightness of the power steering oil pump is to plug the oil pump inlet pipe joint with a rubber plug and press it tightly by hand, screw the oil pump outlet joint with the air inlet plug and connect the pressurized gas for testing. In this method, the sealing of the oil inlet pipe is completely determined by the tightening force of the human hand, and the air tightness test is for pressurized gas. If it is pressed loosely, it is easy to leak, and if it is pressed tightly, it is laborious and easy to get tired.

[0003] In summary, the existing method for detecting air tightness of power steering oil pump cannot eliminate air leakage caused by human factors and reduce the fatigue strength of personnel, resulting in reduced detection efficiency.

[0004] For example, the patent document with the publication number CN113909146A discloses a fully automatic oil pump air tightness detection device, including a workbench, an air tightness detector and a support device are arranged on the workbench, a stand bottom plate is arranged on the support bottom plate, a guide rail extending forward and backward is arranged on the stand bottom plate, a lower plate of the oil pump air tightness tooling is slidably installed on the guide rail, a groove matching the outer contour of the pump body of the oil pump is arranged on the lower plate of the oil pump air tightness tooling, a first sealing ring is arranged in the groove, an air hole is arranged on the lower plate of the oil pump air tightness tooling, one end of the air hole is connected to the air pipe of the air tightness detector, and the other end of the air hole is used to communicate with the inner cavity of the oil pump, all supporting columns are equipped with the same movable plate, the lower end of the movable plate is connected to a cover plate, and a second sealing ring is arranged on the lower surface of the cover plate, and a pneumatic press is arranged on the support top plate, and the piston rod of the pneumatic press extends downward through the support top plate and is connected to the movable plate. The technical solution disclosed in the patent document cannot solve the technical problems recorded above. Utility Model Content

[0005] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a steering power oil pump air tightness detection tool, the purpose of which is to improve the steering power oil pump air tightness detection efficiency.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a steering power oil pump air tightness detection tool, including a positioning assembly, a locking screw threadedly connected to the positioning assembly, and a sealing assembly arranged on the locking screw and used to contact the end face of the oil inlet pipe joint of the steering power oil pump, an air intake channel for guiding gas to the oil inlet pipe joint is arranged inside the locking screw, and a positioning hole for embedding the oil inlet pipe joint is arranged on the positioning assembly.

[0007] The positioning assembly comprises a positioning seat and a positioning screw arranged on the positioning seat, and the locking screw passes through the positioning screw and is threadedly connected with the positioning screw.

[0008] A first sealing ring and a second sealing ring are arranged inside the positioning screw, a pipe joint connected to the air inlet channel is arranged outside the positioning screw, a first air inlet hole is arranged on the outer circumferential surface of the locking screw, and the first air inlet hole is located between the first sealing ring and the second sealing ring.

[0009] The first sealing ring and the second sealing ring are O-type sealing rings.

[0010] The positioning assembly further comprises a positioning clamping plate arranged on the positioning seat, the positioning hole is arranged on the positioning clamping plate, and the sealing assembly and the positioning hole are arranged opposite to each other.

[0011] The positioning clamping plate is detachably connected to the positioning seat.

[0012] The positioning clamping plate is connected to the positioning seat through bolts.

[0013] The sealing assembly comprises a sealing block base connected to the locking screw and a sealing pad block arranged on the sealing block base and used for contacting the end surface of the oil inlet pipe joint.

[0014] The utility model discloses a tool for detecting air tightness of the power steering oil pump, which is easy to operate. It only needs to place the oil inlet pipe in the positioning hole and tighten the locking screw by hand to detect. The occurrence of air leakage caused by human tightening can be reduced, and the efficiency of detecting air tightness of the power steering oil pump is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] This specification includes the following drawings, which show the following contents:

[0016] Figure 1 It is a structural schematic diagram of the utility model of the air tightness detection tooling for the power steering oil pump;

[0017] Figure 2 It is an exploded schematic diagram of the utility model of the air tightness detection tooling for the power steering oil pump;

[0018] Figure 3 This is the front view of the utility model steering power oil pump air tightness detection tool;

[0019] Figure 4 It is a cross-sectional view of the utility model of the air tightness detection tool for the power steering oil pump;

[0020] Figure 5 This is a schematic diagram of the clamping of the air tightness detection tooling for the power steering oil pump of the utility model;

[0021] Figure 6It is a schematic diagram of the appearance of the power steering oil pump;

[0022] The markings in the figure are: 1. locking screw; 2. positioning screw; 3. pipe joint; 4. first sealing ring; 5. second sealing ring; 6. positioning seat; 7. sealing block base; 8. sealing gasket; 9. positioning clamp; 10. first hexagon socket bolt; 11. second hexagon socket bolt. DETAILED DESCRIPTION

[0023] The specific implementation methods of the utility model are further explained in detail below with reference to the accompanying drawings through the description of embodiments, with the aim of helping technicians in the field to have a more complete, accurate and in-depth understanding of the concept and technical solution of the utility model and facilitating its implementation.

[0024] It should be noted that, in the following embodiments, the “first”, “second” and “third” mentioned do not represent an absolute distinction in structure and / or function, nor do they represent a sequence of execution, but are merely for the convenience of description.

[0025] like Figures 1 to 6 As shown, the utility model provides a tool for detecting air tightness of a power steering oil pump, comprising a positioning assembly, a locking screw 1 threadedly connected to the positioning assembly, and a sealing assembly arranged on the locking screw 1 and used for contacting the end face of an oil inlet pipe joint of the power steering oil pump, an air intake channel for guiding gas to the oil inlet pipe joint is arranged inside the locking screw 1, and a positioning hole for embedding the oil inlet pipe joint is arranged on the positioning assembly.

[0026] Specifically, if Figures 1 to 5 As shown, the positioning assembly includes a positioning seat 6 and a positioning screw 2 arranged on the positioning seat 6, and the locking screw 1 passes through the positioning screw 2 and is threadedly connected to the positioning screw 2. A first sealing ring 4 and a second sealing ring 5 are arranged inside the positioning screw 2, and a pipe joint 3 connected to the air inlet channel is arranged outside the positioning screw 2. A first air inlet hole is arranged on the outer circumferential surface of the locking screw 1, and the first air inlet hole is located between the first sealing ring 4 and the second sealing ring 5. A plurality of first air inlet holes are arranged, and all the first air inlet holes are evenly distributed along the circumferential direction on the outer circumferential surface of the locking screw 1. A second air inlet hole is arranged inside the locking screw 1, and the second air inlet hole extends along the axial direction of the locking screw 1, and the second air inlet hole is connected to the first air inlet hole. The pipe joint 3 is used to connect to the air source, and the pipe joint 3 is threadedly connected to the positioning screw 2. The positioning thread is a structure with openings at both ends and a hollow interior. An internal thread is arranged inside the positioning screw 2, and an external thread is arranged outside the locking screw 1. The first sealing ring 4 and the second sealing ring 5 are O-rings, which are sleeved on the locking screw 1 and are used to achieve sealing between the locking screw 1 and the positioning screw 2 to prevent gas leakage.

[0027] like Figures 1 to 5 As shown, one end of the positioning screw 2 is threadedly connected to the positioning seat 6, the positioning seat 6 is provided with an internal thread hole, and one end of the positioning screw 2 is provided with an external thread.

[0028] like Figures 1 to 5 As shown, the positioning assembly also includes a positioning clamping plate 9 arranged on the positioning seat 6, the positioning hole is arranged on the positioning clamping plate 9, the sealing assembly and the positioning hole are arranged relative to each other, and the sealing assembly is located between the positioning clamping plate 9 and the locking screw 1.

[0029] Preferably, the positioning clamp plate 9 is detachably connected to the positioning seat 6. The positioning clamp plate 9 is replaceable and has multiple models. The sizes of the positioning holes on different models are different to match the diameters of the oil inlet pipe joints of different models of power steering oil pumps, thereby improving the versatility of the tooling. For the oil inlet pipe joints of different models and products, it is only necessary to replace the positioning clamp plate 9 to perform air tightness testing.

[0030] In this embodiment, if Figures 1 to 5 As shown, the positioning clamp plate 9 is connected to the positioning seat 6 by bolts. Two bolts are provided, namely a first hexagon socket bolt 10 and a second hexagon socket bolt 11. A through hole is provided on the positioning clamp plate 9 for the two bolts to pass through, and two internal threaded holes are provided on the positioning seat 6.

[0031] like Figures 1 to 5 As shown, the sealing assembly includes a sealing block base 7 connected to the locking screw 1 and a sealing gasket 8 disposed on the sealing block base 7 and used to contact the end face of the oil pump inlet pipe joint. The sealing block base 7 is threadedly connected to one end of the locking screw 1, and the sealing gasket 8 is installed in a gasket groove disposed on the sealing block base 7. A third air inlet hole connected to the second air inlet hole is disposed at the center of the sealing gasket 8. The second air inlet hole and the third air inlet hole are coaxially disposed, and the third air inlet hole is used to guide the gas to the oil pump inlet pipe joint.

[0032] During use, the pipe joint 3 is connected to the pressurized gas. When the pressurized gas enters the inner cavity of the positioning screw 2 through the pipe joint 3, since the first air inlet hole is sealed with the first sealing ring 4 and the second sealing ring 5 at both ends, the pressurized gas can only enter the second air inlet hole in the locking screw 1 through the first air inlet hole on the locking screw 1.

[0033] After the positioning clamp 9 is inserted into the oil pump inlet pipe joint, the locking screw 1 can be manually rotated to tighten it. Since the end face of the oil pump inlet pipe joint is in direct contact with the sealing gasket 8, and the sealing gasket 8 is made of nitrile rubber with a soft surface, it can completely seal the mouth of the oil pump inlet pipe joint; when the pressurized gas is discharged from the second air inlet hole of the locking screw 1, it enters the oil pump inlet pipe joint through the third air inlet hole of the sealing gasket 8, and then enters the inside of the power steering oil pump, the oil outlet of the power steering oil pump is blocked with a plug, and the air tightness test can be achieved.

[0034] The above is an exemplary description of the utility model in conjunction with the accompanying drawings. Obviously, the specific implementation of the utility model is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the utility model; or the above concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. The air tightness detection tool for power steering oil pump is characterized by: It includes a positioning component, a locking screw threadedly connected to the positioning component, and a sealing component arranged on the locking screw and used to contact the end face of the oil inlet pipe joint of the power steering oil pump. An air intake channel for guiding gas to the oil inlet pipe joint is arranged inside the locking screw, and a positioning hole for embedding the oil inlet pipe joint is arranged on the positioning component.

2. The air tightness detection tool for the power steering oil pump according to claim 1 is characterized in that: The positioning assembly comprises a positioning seat and a positioning screw arranged on the positioning seat, and the locking screw passes through the positioning screw and is threadedly connected with the positioning screw.

3. The air tightness detection tool for the power steering oil pump according to claim 2 is characterized in that: A first sealing ring and a second sealing ring are arranged inside the positioning screw, a pipe joint connected to the air inlet channel is arranged outside the positioning screw, a first air inlet hole is arranged on the outer circumferential surface of the locking screw, and the first air inlet hole is located between the first sealing ring and the second sealing ring.

4. The air tightness detection tool for the power steering oil pump according to claim 3 is characterized in that: The first sealing ring and the second sealing ring are O-rings.

5. The air tightness detection tool for the power steering oil pump according to any one of claims 2 to 4, characterized in that: The positioning assembly further comprises a positioning clamping plate arranged on the positioning seat, the positioning hole is arranged on the positioning clamping plate, and the sealing assembly and the positioning hole are arranged opposite to each other.

6. The air tightness detection tool for the power steering oil pump according to claim 5 is characterized in that: The positioning clamping plate is detachably connected to the positioning seat.

7. The air tightness detection tool for the power steering oil pump according to claim 5, characterized in that: The positioning clamping plate is connected to the positioning seat through bolts.

8. The air tightness detection tool for the power steering oil pump according to any one of claims 2 to 4, characterized in that: The sealing assembly comprises a sealing block base connected to the locking screw and a sealing pad block arranged on the sealing block base and used for contacting the end surface of the oil inlet pipe joint.

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