Air tightness detection device for power steering pump

Abstract

The utility model provides an air tightness detection device for a power steering pump. Comprising a rack, a test liquid tank is arranged on the rack, the test liquid tank is filled with test liquid, a push rod motor is vertically installed beside the test liquid tank, a cylinder body of the push rod motor is arranged in the rack, a rod part of the push rod motor extends to the position above the rack, an installation piece is installed on the rod part of the push rod motor, and a rotating motor is installed above the installation piece; the output end of the rotating motor is vertically and downwards arranged, the output end of the rotating motor is connected with a mounting frame, an inflating pipe head is vertically and downwards mounted on the mounting frame, a locking mechanism is arranged at the end part of the inflating pipe head, the top part of the inflating pipe head is connected with an adapter, and the adapter is connected with a pressurizing air pump through a connecting hose. According to the utility model, the immersion type detection structure is arranged, so that the detection effect is ensured, and meanwhile, the detection device can be adapted to detection of booster pumps with various different sizes.

Description

Technical Field

[0001] This utility model belongs to the field of steering pump manufacturing technology and relates to a device for testing the air tightness of a power steering pump. Background Technology

[0002] A power steering pump is a component that helps improve the performance and stability of a vehicle. Its main function is to assist the driver in adjusting the vehicle's direction. All automobiles have power steering pumps, primarily power steering pumps and brake vacuum booster pumps. The airtightness of the power steering pump directly affects its performance. Most existing airtightness testing devices use interface connections and introduce gas to measure pressure changes to check the airtightness. However, the interface of this testing structure is usually fixed, which is very inconvenient when testing different sizes and types of power steering pumps. Therefore, it is necessary to design a power steering pump airtightness testing device to facilitate airtightness testing of different sizes and types of power steering pumps, thereby ensuring that the power steering pump has qualified airtightness at the factory. Summary of the Invention

[0003] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a power steering pump airtightness testing device.

[0004] The objective of this utility model can be achieved through the following technical solution: A power steering pump airtightness testing device, comprising a frame, characterized in that a test liquid tank is provided on the frame, the test liquid tank is filled with test liquid, a push rod motor is vertically installed next to the test liquid tank, the cylinder of the push rod motor is located inside the frame, the rod of the push rod motor extends to the top of the frame, a mounting part is installed on the rod of the push rod motor, a rotary motor is installed above the mounting part, the output end of the rotary motor is vertically downward and connected to a mounting bracket, an air inlet is vertically downward installed on the mounting bracket, a locking mechanism is provided at the end of the air inlet, the locking mechanism includes a locking cover, the locking cover is slidably installed at the end of the air inlet, the end of the air inlet is provided with an internal thread interface that mates with the power steering pump inlet, the air inlet body between the internal thread interface and the locking cover is provided with a threaded part that mates with the locking cover, an adapter is connected to the top of the air inlet, and the adapter is connected to a pressurized air pump through a connecting hose.

[0005] The working principle of this utility model is as follows: First, seal the oil outlet and return port of the booster pump to be tested. Then, connect and fix the oil inlet of the booster pump to the internal thread interface, and fix it again with the locking cover. Then, control the rotary motor to move the booster pump above the test liquid tank. Then, use the push rod motor to immerse the booster pump in the test liquid. Finally, use the pressurized air pump to deliver pressurized gas to the adapter through the connecting hose. Then, use the adapter to fill the booster pump with pressurized gas through the air inlet head and continuously increase the pressure to the specified value. The sealing performance is judged by observing the bubble generation on the surface of the booster pump.

[0006] The inner ring of the locking cover is provided with a sealing ring.

[0007] The above structure serves a sealing function.

[0008] The bottom of the test liquid tank is connected to an inlet pipe and an outlet pipe.

[0009] Using the above structure, the test solution can be replaced and replenished through the inlet and outlet pipes.

[0010] The mounting component is provided with a limiting groove that mates with the mounting bracket.

[0011] The above structure allows the mounting bracket to rotate only within a 90° range.

[0012] A placement board is provided next to the rack.

[0013] Using the above structure, a booster pump or other tools are placed via a mounting plate.

[0014] Compared with the prior art, this power steering pump air tightness testing device has the following advantages: by setting up an immersion testing structure, this utility model can be adapted to test various power steering pumps of different sizes while ensuring the testing effect. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Figure 2 This is a schematic diagram of the connection structure between the mounting bracket and the mounting component in this utility model.

[0017] Figure 3 This is a schematic diagram of the end structure of the air inflator head in this utility model.

[0018] Figure 4 This is a structural schematic diagram of the limiting groove part in this utility model.

[0019] In the diagram, 1. Frame; 2. Test fluid; 3. Push rod motor; 4. Mounting component; 5. Rotary motor; 6. Mounting bracket; 7. Air inlet pipe; 8. Locking cap; 9. Internal threaded interface; 10. Threaded part; 11. Adapter; 12. Pressurized air pump; 13. Connecting hose; 14. Sealing ring; 15. Inlet pipe; 16. Outlet pipe; 17. Placement plate; 18. Limiting groove. Detailed Implementation

[0020] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0021] like Figure 1-4 As shown, this power steering pump airtightness testing device includes a frame 1, a test fluid tank 2 is provided on the frame 1, the test fluid tank 2 is filled with test fluid 2, a push rod motor 3 is vertically installed next to the test fluid tank 2, the cylinder of the push rod motor 3 is located inside the frame 1, the rod of the push rod motor 3 extends to the top of the frame 1, a mounting part 4 is installed on the rod of the push rod motor 3, a rotary motor 5 is installed above the mounting part 4, the output end of the rotary motor 5 is vertically downward and connected to a mounting bracket 6. An air inflator 7 is vertically mounted downwards on the mounting bracket 6. The end of the air inflator 7 is provided with a locking mechanism, which includes a locking cover 8. The locking cover 8 is slidably mounted on the end of the air inflator 7. The end of the air inflator is provided with an internal threaded interface 9 that mates with the oil inlet of the power booster pump. The air inflator body between the internal threaded interface 9 and the locking cover 8 is provided with a threaded part 10 that mates with the locking cover 8. An adapter 11 is connected to the top of the air inflator 7. The adapter 11 is connected to a pressurizing air pump 12 through a connecting hose 13.

[0022] In specific embodiments, test liquid 2 is typically water or kerosene.

[0023] In this utility model, the adapter 11 adopts an existing pneumatic valve structure product with a cut-off function.

[0024] The pressurized air pump 12 in this utility model adopts an existing product.

[0025] In this utility model, the radius of the internal thread interface 9 is larger than the inner diameter of the locking cover 8, thereby playing a limiting role.

[0026] The inner ring of the locking cover 8 is provided with a sealing ring 14.

[0027] The bottom of the test liquid tank 2 is connected to an inlet pipe 15 and an outlet pipe 16.

[0028] Mounting component 4 is provided with a limiting groove 18 that mates with mounting bracket 6.

[0029] A placement plate 17 is provided next to the rack 1.

[0030] In this utility model, the placement plate 17 is installed on the side of the frame 1 by bolts and can be disassembled according to actual needs.

[0031] The working principle of this utility model is as follows: First, seal the oil outlet and return port of the booster pump to be tested. Then, connect and fix the oil inlet of the booster pump to the internal thread interface 9, and fix it again with the locking cover 8. Then, control the rotary motor 5 to move the booster pump above the test liquid 2 tank. Then, use the push rod motor 3 to immerse the booster pump in the test liquid 2. Finally, use the pressurized air pump 12 to deliver pressurized gas to the adapter 11 through the connecting hose 13. Then, use the adapter 11 to fill the booster pump with pressurized gas through the air inlet 7 and continuously increase the pressure to the specified value. The sealing performance is judged by observing the bubble generation on the surface of the booster pump.

[0032] In this invention, the various mechanisms are connected and driven using existing technologies, and synchronous control is achieved through a control panel.

[0033] All of the above components are general standard parts or components known to those skilled in the art. Their structure and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0034] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A power steering pump airtightness testing device, comprising a frame (1), characterized in that, A test liquid (2) tank is provided on the frame (1), and the test liquid (2) tank is filled with test liquid (2). A push rod motor (3) is vertically installed next to the test liquid (2) tank. The cylinder of the push rod motor (3) is located inside the frame (1). The rod of the push rod motor (3) extends to the top of the frame (1). A mounting part (4) is installed on the rod of the push rod motor (3). A rotary motor (5) is installed above the mounting part (4). The output end of the rotary motor (5) is vertically downward, and the output end of the rotary motor (5) is connected to a mounting bracket (6). The mounting bracket (6) is vertically downward. An inflation tube head (7) is installed, and a locking mechanism is provided at the end of the inflation tube head (7). The locking mechanism includes a locking cover (8), which is slidably installed at the end of the inflation tube head (7). The end of the inflation tube head is provided with an internal thread interface (9) that mates with the oil inlet of the power booster pump. The inflation tube body between the internal thread interface (9) and the locking cover (8) is provided with a threaded part (10) that mates with the locking cover (8). An adapter (11) is connected to the top of the inflation tube head (7), and the adapter (11) is connected to a pressurizing air pump (12) through a connecting hose (13).

2. The power steering pump airtightness testing device according to claim 1, characterized in that, The inner ring of the locking cover (8) is provided with a sealing ring (14).

3. The power steering pump airtightness testing device according to claim 1, characterized in that, The bottom of the test liquid (2) tank is connected to an inlet pipe (15) and an outlet pipe (16).

4. The power steering pump airtightness testing device according to claim 1, characterized in that, The mounting component (4) is provided with a limiting groove (18) that cooperates with the mounting bracket (6).

5. The power steering pump airtightness testing device according to claim 1, characterized in that, A placement plate (17) is provided next to the frame (1).

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