A power steering system detection tool

Abstract

This utility model relates to the field of testing tools, specifically disclosing a power steering system testing tool, including: an overflow valve, and two high-pressure oil pipes. The upper end of the high-pressure oil pipes is fixedly connected to the lower end of the overflow valve, and the inner cavity of the high-pressure oil pipes communicates with the inner cavity of the overflow valve. A flow meter is fixedly connected to the side of the first connecting pipe away from the overflow valve, and an oil pressure gauge is installed on the side of the second connecting pipe away from the overflow valve. One of the high-pressure oil pipes is fixedly connected to a main connecting pipe on the side away from the overflow valve. Traditional methods, when encountering faults such as heavy steering, sequentially replace the power steering booster and the power steering pump to determine the faulty component. This method cannot accurately determine whether the problem lies with the power steering system or the power steering pump. This device, however, uses a specific testing procedure to first test the power steering pump, and then test the power steering system, thereby accurately identifying the faulty component and avoiding the time and cost waste caused by blindly replacing components.

Description

Technical Field

[0001] This utility model relates to the field of testing tools, specifically a power steering system testing tool. Background Technology

[0002] The wheeled armored vehicle employs an integrated power steering system, characterized by high transmission efficiency, easy operation, strong automatic return-to-center capability after steering, and long service life. The steering system works by transmitting the rotational motion of the steering wheel through the steering column and steering telescopic shaft to the integrated power steering gear with a recirculating ball nut. The steering pump, driven by the engine, provides hydraulic assistance to the system. Inside the steering gear, the recirculating ball nut and sector gear kinematic pair reduce the speed and increase the torque of the input rotational motion, converting it into rotation of the output shaft. The steering arm is mounted on the output shaft of the steering gear, and the steering tie rod converts the swing of the steering arm into lateral tie rod motion through the steering vertical shaft, thus facilitating steering of the armored vehicle. The power steering pump must provide sufficient hydraulic pressure to drive the power steering piston. When steering is heavy, first check if the power steering reservoir is full. If it is low on fluid, it is caused by leaks in various steering components and high-pressure lines, which is easy to find and diagnose. If the reservoir is leaking fluid, it indicates a problem with the inlet line or a failure of the pump shaft oil seal. Air enters during the power steering pump's oil intake process, causing an increase in system fluid volume and hydraulic oil to leak from the reservoir. The main reasons for reservoir leakage are: 1) loose or poorly sealed inlet pipe joints; 2) kinked or flattened inlet pipe due to high temperature; 3) aging or cracked inlet pipe; and 4) failure of the power steering pump shaft oil seal causing air intake. Next, check if the power steering pump and power steering system are faulty.

[0003] The traditional method involves replacing the power steering booster and the power steering pump in sequence. If the problem is resolved, it indicates that either the power steering booster or the power steering pump is faulty and can be replaced. However, this traditional method not only fails to accurately determine whether the problem lies with the power steering system or the power steering pump, but may also damage the new component during assembly. Therefore, we propose a power steering system testing tool. Utility Model Content

[0004] The purpose of this invention is to provide a power steering system testing tool to solve the problem mentioned in the background art that the traditional replacement method cannot accurately determine the faulty components of the power steering system of wheeled armored vehicles and is prone to damaging new components during assembly.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a power steering system testing tool, comprising: an overflow valve, a first connecting pipe fixedly connected to one side of the overflow valve, wherein the inner cavity of the first connecting pipe communicates with the inner cavity of the overflow valve, and a second connecting pipe fixedly connected to the side of the overflow valve away from the first connecting pipe, wherein the inner cavity of the second connecting pipe communicates with the inner cavity of the overflow valve;

[0006] It also includes: two high-pressure oil pipes, the upper end of which is fixedly connected to the lower end of the relief valve, and the inner cavity of the high-pressure oil pipe is connected to the inner cavity of the relief valve. A flow meter is fixedly connected to the side of the first connecting pipe away from the relief valve, and an oil pressure gauge is installed on the side of the second connecting pipe away from the relief valve. A connecting main pipe is fixedly connected to the side of one of the high-pressure oil pipes away from the relief valve.

[0007] The filter assembly is located in the middle of the inner cavity of the connecting main pipe and is used to filter the oil.

[0008] The unclogging component is located in the middle of the filter assembly and is used to clean the mesh clogging.

[0009] The flow meter has a scale on its outer surface and an oil nozzle connector is fixedly connected to the side of the flow meter away from the first connecting pipe. The inner cavity of the oil nozzle connector is connected to the inner cavity of the flow meter.

[0010] The connecting main pipe is fixedly connected to a third connecting pipe on the side away from the high-pressure oil pipe, and the inner cavity of the third connecting pipe is connected to the inner cavity of the connecting main pipe. The lower end of the connecting main pipe is fixedly connected to a first connecting block.

[0011] The filter assembly includes a second connecting block and several bolts. The second connecting block is threadedly connected to the several bolts, and the first connecting block is threadedly connected to the several bolts. The lower end of the first connecting block is tightly fitted to the upper end of the second connecting block. A tube shell is fixedly connected to the middle of the upper end of the second connecting block. A connecting hole is opened on the upper part of the tube shell, extending through the outer surface of the tube shell to the inner cavity of the tube shell. A first filter box is slidably connected to the inner cavity of the tube shell on the side close to the high-pressure oil pipe, and a second filter box is slidably connected to the inner cavity of the tube shell on the side away from the high-pressure oil pipe. An oil inlet hole is opened on the upper part of the second filter box, and the oil inlet hole is adjacent to the connecting hole.

[0012] The first filter box has several first filter holes on the side near the high-pressure oil pipe, several second filter holes on the side away from the high-pressure oil pipe, and several third filter holes on the side of the second filter box near the second filter holes. The inner diameter of the third filter hole is larger than the inner diameter of the second filter hole, and the inner diameter of the second filter hole is larger than the inner diameter of the first filter hole.

[0013] The second connecting block has symmetrically arranged mounting grooves in the middle, and the inner cavity of each mounting groove is fixedly connected to a shell. The inner cavity of each shell is slidably connected to a locking block, and the inner cavity of each shell is provided with a spring. The two sides of the spring are fixedly connected to the locking block and the inner wall of the shell, respectively. The second connecting block has symmetrically arranged sliding grooves, and the inner cavity of each sliding groove is slidably connected to a docking block. The side of the docking block near the locking block has a locking groove. The lower end of the first filter box is fixedly connected to the adjacent docking block, and the lower end of the second filter box is fixedly connected to the adjacent docking block.

[0014] The unclogging component includes a handle rotatably connected to the second connecting block, a screw fixedly connected to the upper end of the handle, a cleaning brush threadedly connected to the outer surface of the screw, the cleaning brush slidingly connected to the inner cavity of the tube shell, and the cleaning brush located between the opposite surfaces of the first filter box and the second filter box.

[0015] This utility model has at least the following beneficial effects:

[0016] Traditional methods involve replacing the power steering pump and steering fluid pump sequentially when problems such as heavy steering occur to identify the faulty component. This approach cannot accurately pinpoint whether the problem lies with the power steering system or the steering fluid pump. However, this device uses a specific testing procedure to first test the power steering pump and then the power steering system, thereby accurately identifying the faulty component and avoiding the waste of time and costs associated with blindly replacing components. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the connecting main tube of this utility model;

[0019] Figure 3 This is a schematic diagram of the filter assembly of this utility model;

[0020] Figure 4 This is a schematic diagram of the unblocking component of this utility model;

[0021] Figure 5 This is a schematic diagram of the card slot of this utility model.

[0022] In the diagram: 1. Overflow valve; 11. First connecting pipe; 12. Second connecting pipe; 13. Oil pressure gauge; 2. High-pressure oil pipe; 3. Flow meter; 31. Scale gauge; 32. Oil nozzle connector; 4. Main connecting pipe; 41. Third connecting pipe; 42. First connecting block; 5. Filter assembly; 51. Second connecting block; 511. Mounting groove; 512. Slide groove; 513. Connecting block; 514. Housing; 515. Spring; 516. Locking block; 517. Locking groove; 52. Bolt; 53. Pipe shell; 531. Connecting hole; 54. First filter box; 541. First filter hole; 542. Second filter hole; 55. Second filter box; 551. Third filter hole; 552. Oil inlet; 6. Unclogging assembly; 61. Handle; 62. Screw; 63. Cleaning brush. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example 1

[0025] Please see Figures 1 to 5 This utility model provides a technical solution: a power steering system testing tool, including: an overflow valve 1, a first connecting pipe 11 fixedly connected to one side of the overflow valve 1, and the inner cavity of the first connecting pipe 11 communicating with the inner cavity of the overflow valve 1, and a second connecting pipe 12 fixedly connected to the side of the overflow valve 1 away from the first connecting pipe 11, and the inner cavity of the second connecting pipe 12 communicating with the inner cavity of the overflow valve 1;

[0026] It also includes: two high-pressure oil pipes 2, the upper end of the high-pressure oil pipe 2 is fixedly connected to the lower end of the overflow valve 1, and the inner cavity of the high-pressure oil pipe 2 is connected to the inner cavity of the overflow valve 1. A flow meter 3 is fixedly connected to the side of the first connecting pipe 11 away from the overflow valve 1, and an oil pressure gauge 13 is provided on the side of the second connecting pipe 12 away from the overflow valve 1. A connecting main pipe 4 is fixedly connected to the side of one of the high-pressure oil pipes 2 away from the overflow valve 1.

[0027] Filter assembly 5 is located in the middle of the inner cavity of the connecting main pipe 4 and is used to filter oil.

[0028] The unclogging component 6 is located in the middle of the filter component 5 and is used to clean the mesh blockage.

[0029] Drain the oil by removing the threaded plug at the bottom of the steering gear. Then, remove the steering gear inlet pipe connector, install the steering gear quick connector to the steering gear inlet position and tighten it. Install the quick connector of one of the high-pressure oil pipes 2 to the inlet pipe threaded plug position and tighten it. Separate the oil pipes at the power steering pump end and the power steering end of the device. Insert the quick connector at the steering pump end into the quick connector at 41. Insert the quick connector at the steering gear end of the device into the power steering quick connector. Loosen the throttle valve counterclockwise. Install and tighten the power steering drain plug. Add steering gear oil to the level line. Start the engine and continue adding steering gear oil until the air is purged.

[0030] Then, conduct the test. First, check the power steering pump. Keep the engine at 1000 r / min and observe the instantaneous flow rate of flow meter 3. It should not be lower than 85% of the rated flow rate of the power steering pump. Close the throttle valve and hold for 3 to 5 seconds. The maximum pressure should not be lower than 85% of the rated pressure of the oil pump.

[0031] Next, inspect the power steering system. Replace the steering system limit screw with a screw of approximately 15mm. This ensures that the steering system limit valve is not activated during testing. At idle, turn the steering wheel to the right to its limit position and hold it for 3-5 seconds. The maximum pressure should not be lower than 90% of the pump source pressure, and the internal leakage flow should not exceed 15% of the pump source flow. Then, at idle, turn the steering wheel to the left to its limit position and hold it for 3-5 seconds. The maximum pressure should not be lower than 90% of the pump source pressure, and the internal leakage flow should not exceed 15% of the pump source flow. This allows for sequential testing of the power steering system and steering pump of the wheeled armored vehicle, enabling accurate judgment. Identifying faulty components avoids the waste of time and costs associated with blindly replacing parts. It also allows maintenance personnel to directly repair or replace problematic components without having to repeatedly try different parts as in traditional methods. This shortens maintenance time, improves maintenance efficiency, and enables wheeled armored vehicles to be put back into service more quickly, meeting the needs of performing diverse missions. Furthermore, the elimination of frequent component replacements reduces assembly steps, thereby lowering the risk of new components being damaged during assembly, ensuring maintenance quality, and avoiding additional costs and time consumption due to the damage of new components.

[0032] The flow meter 3 has a scale 31 on its outer surface. The flow meter 3 is fixedly connected to an oil nozzle connector 32 on the side away from the first connecting pipe 11, and the inner cavity of the oil nozzle connector 32 is connected to the inner cavity of the flow meter 3.

[0033] The presence of a scale 31 allows maintenance personnel to quickly determine values ​​during testing, while the presence of an oil pressure gauge 13 helps them monitor oil pressure changes during testing.

[0034] Example 2

[0035] A third connecting pipe 41 is fixedly connected to the side of the main connecting pipe 4 away from the high-pressure oil pipe 2, and the inner cavity of the third connecting pipe 41 communicates with the inner cavity of the main connecting pipe 4. A first connecting block 42 is fixedly connected to the lower end of the main connecting pipe 4. The filter assembly 5 includes a second connecting block 51 and several bolts 52. The second connecting block 51 is threadedly connected to the several bolts 52, and the first connecting block 42 is threadedly connected to the several bolts 52. The lower end of the first connecting block 42 is tightly fitted to the upper end of the second connecting block 51. A pipe shell 53 is fixedly connected to the middle of the upper end of the second connecting block 51. A connecting hole 531 is opened on the upper part of the pipe shell 53, extending through the outer surface of the pipe shell 53 and into the inner cavity of the pipe shell 53. The inner cavity of the pipe shell 53 slides on the side near the high-pressure oil pipe 2. A first filter box 54 is dynamically connected, and a second filter box 55 is slidably connected to the side of the inner cavity of the tube shell 53 away from the high-pressure oil pipe 2. An oil inlet hole 552 is opened on the upper part of the second filter box 55, which is adjacent to the connecting hole 531. A number of first filter holes 541 are opened on the side of the first filter box 54 close to the high-pressure oil pipe 2, and a number of second filter holes 542 are opened on the side of the first filter box 54 away from the high-pressure oil pipe 2. A number of third filter holes 551 are opened on the side of the second filter box 55 close to the second filter holes 542. The inner diameter of the third filter hole 551 is larger than the inner diameter of the second filter hole 542, and the inner diameter of the second filter hole 542 is larger than the inner diameter of the first filter hole 541.

[0036] The second connecting block 51 has symmetrically arranged mounting grooves 511 in the middle. A housing 514 is fixedly connected to the inner cavity of each mounting groove 511. A locking block 516 is slidably connected to the inner cavity of each housing 514. A spring 515 is provided in the inner cavity of each housing 514. The two sides of the spring 515 are fixedly connected to the locking block 516 and the inner wall of the housing 514, respectively. The second connecting block 51 has symmetrically arranged sliding grooves 512. A mating block 513 is slidably connected to the inner cavity of each sliding groove 512. The mating block 513 has a side near the locking block 516... A slot 517 is provided. The lower end of the first filter box 54 is fixedly connected to the adjacent docking block 513. The lower end of the second filter box 55 is fixedly connected to the adjacent docking block 513. The unclogging component 6 includes a handle 61 that is rotatably connected to the second connecting block 51. A screw 62 is fixedly connected to the upper end of the handle 61. A cleaning brush 63 is threadedly connected to the outer surface of the screw 62. The cleaning brush 63 is slidably connected to the inner cavity of the tube shell 53. The cleaning brush 63 is located between the opposite surfaces of the first filter box 54 and the second filter box 55.

[0037] During testing, to prevent impurities in the oil from affecting the normal operation of the device, the oil needs to be filtered. A connection hole 531 is provided to facilitate the oil entering the inner cavity of the housing 53. Then, an oil inlet hole 552 is provided to allow the oil to enter the inner cavity of the second filter box 55. After passing through several third filter holes 551, impurities in the oil are intercepted. The oil filtered by the second filter box 55 then passes through several second filter holes 542 into the inner cavity of the first filter box 54, thus performing secondary filtration using the second filter holes 542 to further reduce impurities in the oil. Then, the oil is discharged into the inner cavity of the first filter box 54 through several first filter holes 541, thus performing secondary filtration using the first filter holes 541. After multiple filtrations, the probability of impurities in the oil is reduced, preventing these impurities from affecting the normal testing of the device.

[0038] When it is necessary to clean the blockage in the inner cavity of several third filter holes 551 and several second filter holes 542, the handle 61 is rotated, which in turn drives the screw 62 to rotate. Since the cleaning brush 63 is threadedly connected to the screw 62, the screw 62 rotates, which drives the cleaning brush 63 to move downward. The cleaning brush 63 then cleans the several second filter holes 542 and third filter holes 551 to prevent the mesh from being blocked, thus affecting the filtration efficiency and quality of the oil.

[0039] When it is necessary to clean the impurities in the inner cavity of the first filter box 54 and the inner cavity of the second filter box 55, the maintenance personnel can loosen the positional constraint between the second connecting block 51 and the first connecting block 42 by rotating several bolts 52. Then, the shell 53 is separated from the inner cavity of the third connecting pipe 41. Next, by applying force to the first filter box 54 and the second filter box 55, the first filter box 54 and the second filter box 55 are moved away from the second connecting block 51. During the movement, the docking block 513 is moved upward in the inner cavity of the slide groove 512. Then, a force is applied to the locking block 516, causing the locking block 516 to slide in the inner cavity of the outer shell 514. Then, the spring 515 is contracted, thereby separating the locking block 516 from the inner cavity of the locking groove 517, loosening the positional constraint on the docking block 513, and then separating the first filter box 54 and the second filter box 55 from the second connecting block 51. Then, the impurities in the inner cavity of the first filter box 54 and the inner cavity of the second filter box 55 can be treated.

[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A power steering system testing tool, comprising: An overflow valve is provided, wherein a first connecting pipe is fixedly connected to one side of the overflow valve and the inner cavity of the first connecting pipe communicates with the inner cavity of the overflow valve; and a second connecting pipe is fixedly connected to the side of the overflow valve away from the first connecting pipe and the inner cavity of the second connecting pipe communicates with the inner cavity of the overflow valve. Its features include: two high-pressure oil pipes, the upper end of which is fixedly connected to the lower end of the overflow valve, and the inner cavity of the high-pressure oil pipe is connected to the inner cavity of the overflow valve. A flow meter is fixedly connected to the side of the first connecting pipe away from the overflow valve, and an oil pressure gauge is provided on the side of the second connecting pipe away from the overflow valve. A connecting main pipe is fixedly connected to the side of one of the high-pressure oil pipes away from the overflow valve. A filter assembly located in the middle of the inner cavity of the connecting main pipe, the filter assembly being used to filter oil; A clogging removal component is located in the middle of the filter assembly and is used to clean the mesh clogging.

2. The power steering system testing tool according to claim 1, characterized in that: The flow meter has a scale on its outer surface, and an oil nozzle connector is fixedly connected to the side of the flow meter away from the first connecting pipe, with the inner cavity of the oil nozzle connector communicating with the inner cavity of the flow meter.

3. The power steering system testing tool according to claim 1, characterized in that: A third connecting pipe is fixedly connected to the side of the main connecting pipe away from the high-pressure oil pipe, and the inner cavity of the third connecting pipe communicates with the inner cavity of the main connecting pipe. A first connecting block is fixedly connected to the lower end of the main connecting pipe.

4. The power steering system testing tool according to claim 3, characterized in that: The filter assembly includes a second connecting block and several bolts. The second connecting block is threadedly connected to the several bolts, and the first connecting block is also threadedly connected to the several bolts. The lower end of the first connecting block is tightly fitted to the upper end of the second connecting block. A tube shell is fixedly connected to the middle of the upper end of the second connecting block. A connecting hole is opened on the upper part of the tube shell, extending through the outer surface of the tube shell to the inner cavity of the tube shell. A first filter box is slidably connected to the inner cavity of the tube shell near the high-pressure oil pipe, and a second filter box is slidably connected to the inner cavity of the tube shell away from the high-pressure oil pipe. An oil inlet hole is opened on the upper part of the second filter box, and the oil inlet hole is adjacent to the connecting hole.

5. The power steering system testing tool according to claim 4, characterized in that: The first filter box has several first filter holes on the side near the high-pressure oil pipe, several second filter holes on the side away from the high-pressure oil pipe, and several third filter holes on the side of the second filter box near the second filter holes. The inner diameter of the third filter hole is larger than the inner diameter of the second filter hole, and the inner diameter of the second filter hole is larger than the inner diameter of the first filter hole.

6. The power steering system testing tool according to claim 4, characterized in that: The second connecting block has symmetrically arranged mounting grooves in the middle. Each mounting groove has a shell fixedly connected to its inner cavity. Each shell has a slidably connected locking block in its inner cavity. Each shell has a spring in its inner cavity. The two sides of the spring are fixedly connected to the locking block and the inner wall of the shell, respectively. The second connecting block has symmetrically arranged sliding grooves. Each sliding groove has a sliding connecting block in its inner cavity. Each connecting block has a locking groove on the side near the locking block. The lower end of the first filter box is fixedly connected to the adjacent connecting block. The lower end of the second filter box is fixedly connected to the adjacent connecting block.

7. The power steering system testing tool according to claim 1, characterized in that: The unclogging assembly includes a handle rotatably connected to the second connecting block. A screw is fixedly connected to the upper end of the handle. A cleaning brush is threadedly connected to the outer surface of the screw. The cleaning brush is slidably connected to the inner cavity of the tube shell. The cleaning brush is located between the opposite surfaces of the first filter box and the second filter box.

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