Steering gear testing device

Abstract

The utility model relates to the technical field of testing devices, in particular to a steering gear testing device which comprises a gearbox, a sleeve and a connecting pipe, a transmission shaft is arranged on the outer wall of the lower end of the gearbox, a universal joint is connected to the outer wall of the lower end of the transmission shaft, a connecting shaft is connected to the outer wall of the lower end of the universal joint, and a second flange is installed at the lower end of the outer wall of the connecting shaft. Sleeves distributed in a circular array are embedded in the second flange, piston bodies are arranged in the sleeves, connecting pipes are in threaded connection with the outer walls of the lower ends of the sleeves, fixing blocks are installed on the two sides of the outer walls of the lower ends of the connecting pipes, and communicating grooves are formed in the fixing blocks; the first flange and the second flange can be assembled and connected conveniently, a traditional bolt connection mode is changed, the connection efficiency between the connecting shaft and the steering gear body is improved, and the detection efficiency of the steering gear body is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to test device technical field, concretely relates to steering gear test device. BACKGROUND

[0002] Steering gear is a kind of device for changing the direction of mechanical device, is widely used in automobile, ship and aircraft and other vehicles, before delivery, generally need to carry out fatigue durability test to power steering gear, to accurately master product performance, power steering gear fatigue durability test device is a kind of special equipment for evaluating the reliability and life of steering gear under long time use and different working conditions, evaluates its durability and fatigue life by repeated loading and unloading.

[0003] The utility model discloses a drive assembly for power steering gear fatigue durability test discloses the drive assembly for power steering gear fatigue durability test, including support column, be provided with lifting support on the support column, one side of lifting support is provided with mounting bracket, be provided with motor and speed reducer on the mounting bracket, the motor is connected with speed reducer, the output shaft of speed reducer is connected with drive flange, be provided with torque sensor between the output shaft of speed reducer and drive flange, drive flange is connected with vertical universal coupling, the lower end of universal coupling is provided with lower adapter flange. The utility model discloses a torque sensor is arranged, can detect the torque that the motor exports in real time during test, so as to intuitively obtain the power size of drive assembly output, guarantee the accuracy of test.

[0004] The prior art CN219914882U has the following problems in use, although it has many benefits, the connection of the flange is not perfect, which requires multiple bolts to fix the flange, resulting in low assembly efficiency of the flange and affecting the connection efficiency of the steering gear drive shaft. UTILITY MODEL CONTENTS

[0005] To solve the problems in the prior art, the utility model provides a steering gear test device.

[0006] The utility model solves the technical scheme that it adopts steering gear test device, including gear box, sleeve and connecting pipe, the transmission shaft is provided with the outer wall at gear box lower extreme, the universal joint is connected with the outer wall at transmission shaft lower extreme, the connecting shaft is connected with the outer wall at universal joint lower extreme, the second flange is installed in the outer wall lower extreme of connecting shaft, the sleeve of circular array distribution is embedded and installed in the second flange, the piston body is provided with in the sleeve, the connecting pipe is connected with the outer wall threadedly at sleeve lower extreme, the fixed block is installed in the both sides of the outer wall lower extreme of connecting pipe, the communicating groove is set up in the fixed block.

[0007] By adopting the above technical solution, the input end of the gearbox is connected to the drive motor, so that the drive motor can drive the transmission shaft to rotate through the output end of the gearbox, and the drive shaft can drive the steering gear body to rotate through the universal joint, the connecting shaft, the first flange and the second flange. The load connected to the other end of the steering gear body can realize fatigue resistance testing of it, and the piston body can push the hydraulic oil inside the sleeve and the connecting pipe to flow, so that the hydraulic oil flows into the connecting groove.

[0008] Specifically, the outer wall of the lower end of the connecting shaft is provided with a steering gear body, the upper end of the outer wall of the steering gear body is provided with a first flange, the first flange is located below the second flange, and the fixing block is located at the lower end of the first flange.

[0009] By adopting the above technical solution, the first flange and the second flange can be connected through the connecting pipe and the clamping block, maintaining the connection stability between the first flange and the second flange, so that the connecting shaft can drive the steering gear body to rotate.

[0010] Specifically, a connecting ring is threadedly connected to one side of the outer wall of the connecting shaft, and the connecting ring is located at the upper end of the second flange. A push rod is installed on the outer wall of the upper end of the piston body, and the outer wall of the upper end of the push rod contacts the outer wall of the lower end of the connecting ring.

[0011] By adopting the above technical solution, the staff rotates the connecting ring, and the connecting ring can move vertically on the outside of the connecting shaft until the connecting ring squeezes the push rod, so that the push rod can push the piston body downward inside the sleeve, and the piston body pushes the hydraulic oil inside the sleeve and the connecting pipe to flow.

[0012] Specifically, a sealing ring is provided at the contact point between the connecting pipe and the sleeve, a limiting ring is installed on one side of the inner wall of the connecting pipe, a spring is provided on the outer wall of the upper end of the limiting ring, and the piston body is elastically connected to the limiting ring through the spring.

[0013] By adopting the above technical solution, the setting of the sealing ring ensures the sealing between the connecting pipe and the sleeve, preventing the leakage of hydraulic oil during the test. The combination of the limit ring and the spring provides stable movement of the piston body in the sleeve and ensures that the piston body can be quickly reset when the connecting ring loses its function, thereby allowing the hydraulic oil in the connecting groove to flow back to the inside of the connecting pipe.

[0014] Specifically, limit blocks are installed on both sides of the inner wall of the sleeve, and the limit blocks are located at the upper end of the piston body.

[0015] By adopting the above technical solution, the limit block and the connecting ring limit the movement range of the piston body, thereby limiting the inflow of hydraulic oil into the connecting groove and limiting the moving distance of the piston rod.

[0016] Specific, the inner wall of the communication groove upper end and the inner wall of the connecting pipe lower end both sides are provided with a communication hole, and the communication groove is connected with the connecting pipe inside through the communication hole.

[0017] By adopting the above technical scheme, the communication hole is arranged to enable the communication groove and the connecting pipe inside to be communicated with each other, thereby allowing the hydraulic oil in the test process to flow freely between them.

[0018] Specifically, the communication groove is internally provided with a piston rod, and the piston rod is provided with a clamping block penetrating through the outer wall of one end of the communication groove.

[0019] By adopting the above technical scheme, the piston rod can control the moving distance of the clamping block according to the amount of hydraulic oil flowing into the communication groove, so that the clamping block protrudes from the lower end of the connecting pipe and moves to the lower end of the second flange, and the first flange and the second flange are connected through the sleeve, the connecting pipe and the clamping block, thereby maintaining the connection stability between the connecting shaft and the steering gear body and improving the accuracy and reliability of the test.

[0020] The beneficial effects of the utility model are as follows:

[0021] (1) The steering gear testing device can conveniently assemble and connect the first flange and the second flange, changes the traditional bolt connection mode, improves the connection efficiency between the connecting shaft and the steering gear body, and improves the detection efficiency of the steering gear body.

[0022] (2) The steering gear testing device can drive the steering gear body to rotate through the driving shaft, the universal joint and the connecting shaft, so that the fatigue and durability detection of the steering gear body can be realized, and the quality of the steering gear body can be conveniently adjusted by the staff. BRIEF DESCRIPTION OF DRAWINGS

[0023] The utility model is further described below in combination with the drawings and examples.

[0024] Figure 1 It is the gear box structure appearance schematic view of the utility model;

[0025] Figure 2 It is the connecting shaft structure exploded view schematic view of the utility model;

[0026] Figure 3 It is the sleeve structure section view schematic view of the utility model;

[0027] Figure 4 It is the fixed block structure section view schematic view of the utility model;

[0028] Figure 5 It is the connecting pipe structure local enlarged schematic view of the utility model.

[0029] In the figure: 1. Gearbox; 11. Drive shaft; 12. Universal joint; 13. Connecting shaft; 14. Steering gear body; 15. First flange; 16. Connecting ring; 17. Second flange; 2. Sleeve; 21. Limit block; 22. Piston body; 23. Push rod; 24. Spring; 3. Connecting pipe; 31. Limit ring; 32. Fixing block; 33. Connecting groove; 34. Piston rod; 35. Block; 36. Connecting hole. DETAILED DESCRIPTION

[0030] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0031] In order to save manpower and improve efficiency, as an embodiment of the present invention, Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 As shown, the steering gear testing device described in the present invention includes a gearbox 1, a sleeve 2 and a connecting pipe 3. A transmission shaft 11 is provided on the outer wall of the lower end of the gearbox 1. The outer wall of the lower end of the transmission shaft 11 is connected to a universal joint 12. The outer wall of the lower end of the universal joint 12 is connected to a connecting shaft 13. A second flange 17 is installed on the lower end of the outer wall of the connecting shaft 13. A circular array of sleeves 2 are embedded in the second flange 17. A piston body 22 is provided inside the sleeve 2. The outer wall of the lower end of the sleeve 2 is threadedly connected to the connecting pipe 3. Fixed blocks 32 are installed on both sides of the outer wall of the lower end of the connecting pipe 3. A connecting groove 33 is opened inside the fixed block 32.

[0032] When in use, the input end of the gearbox 1 is connected to the drive motor, so that the drive motor can drive the transmission shaft 11 to rotate through the output end of the gearbox 1, and the drive shaft can drive the steering gear body 14 to rotate through the universal joint 12, the connecting shaft 13, the first flange 15 and the second flange 17. The load connected to the other end of the steering gear body 14 can be used to perform fatigue resistance testing on it, and the piston body 22 can push the hydraulic oil inside the sleeve 2 and the connecting pipe 3 to flow, so that the hydraulic oil flows to the inside of the connecting groove 33.

[0033] In order to connect the steering body 14, illustratively, as Figure 2 As shown, a steering gear body 14 is provided on the outer wall of the lower end of the connecting shaft 13, and a first flange 15 is provided on the upper end of the outer wall of the steering gear body 14. The first flange 15 is located at the lower end of the second flange 17, and the fixing block 32 is located at the lower end of the first flange 15.

[0034] In use, the first flange 15 and the second flange 17 can be connected through the connecting pipe 3 and the clamping block 35, the stability of the connection between the first flange 15 and the second flange 17 is maintained, so that the connecting shaft 13 can drive the deflector body 14 to rotate.

[0035] In order to push the piston body 22 to move, for example, as shown in the figure Figure 2 The connecting ring 16 is threadedly connected to the outer wall of the connecting shaft 13, the connecting ring 16 is located at the upper end of the second flange 17, the push rod 23 is installed on the outer wall of the upper end of the piston body 22, and the outer wall of the upper end of the push rod 23 is in contact with the outer wall of the lower end of the connecting ring 16.

[0036] In use, the staff rotates the connecting ring 16, the connecting ring 16 can move vertically on the outside of the connecting shaft 13 until the connecting ring 16 presses the push rod 23, so that the push rod 23 can push the piston body 22 to move downward in the sleeve 2, and the piston body 22 pushes the hydraulic oil in the sleeve 2 and the connecting pipe 3 to flow.

[0037] In order to facilitate disassembly, for example, as shown in the figure Figure 3 The connecting pipe 3 is provided with a sealing ring at the contact position with the sleeve 2, the limiting ring 31 is installed on one side of the inner wall of the connecting pipe 3, the spring 24 is arranged on the outer wall of the upper end of the limiting ring 31, and the piston body 22 is elastically connected between the spring 24 and the limiting ring 31.

[0038] In use, the sealing ring ensures the sealing between the connecting pipe 3 and the sleeve 2, preventing the hydraulic oil from leaking during the test, and the combination of the limiting ring 31 and the spring 24 provides stable movement of the piston body 22 in the sleeve 2 and ensures that the piston body 22 can quickly reset when the connecting ring 16 loses the effect, so that the hydraulic oil in the communication groove 33 can flow back to the inside of the connecting pipe 3, the staff can disassemble the connecting pipe 3 to replace the spring 24, and the reset ability of the spring 24 to the piston body 22 is ensured.

[0039] In order to limit the moving range, for example, as shown in the figure Figure 3 The limiting block 21 is installed on both sides of the inner wall of the sleeve 2, and the limiting block 21 is located at the upper end of the piston body 22.

[0040] In use, the limiting block 21 and the connecting ring 16 limit the moving range of the piston body 22, so as to limit the inflow amount of the hydraulic oil in the communication groove 33 and limit the moving distance of the piston rod 34.

[0041] In order to flow the hydraulic oil, for example, as shown in the figure Figure 5 The communication hole 36 is formed in the inner wall of the upper end of the communication groove 33 and the inner wall of the lower end of the connecting pipe 3, and the communication groove 33 is connected with the inside of the connecting pipe 3 through the communication hole 36.

[0042] During use, the communication hole 36 enables the communication groove 33 and the interior of the connecting pipe 3 to communicate with each other, thereby allowing the hydraulic oil to flow freely between the two during the test process.

[0043] For fixed connection, for example, Figure 4 As shown, a piston rod 34 is provided inside the communicating groove 33 , and the piston rod 34 passes through the communicating groove 33 . A clamping block 35 is provided on the outer wall of one end.

[0044] During use, the piston rod 34 can control the moving distance of the block 35 according to the amount of hydraulic oil flowing into the connecting groove 33, so that the block 35 protrudes from the lower end of the connecting pipe 3 and moves to the lower end of the second flange 17. The first flange 15 and the second flange 17 are connected through the sleeve 2, the connecting pipe 3 and the block 35, thereby maintaining the stability of the connection between the connecting shaft 13 and the steering gear body 14, thereby improving the accuracy and reliability of the test.

[0045] When the utility model is in use, first, the drive motor is connected to the input end of the gear box 1 to ensure that the motor can drive the gears inside the gear box 1 to rotate. Then, the transmission shaft 11 is installed to the output end of the gear box 1, and the transmission shaft 11 is connected to the connecting shaft 13 through the universal joint 12. At the lower end of the connecting shaft 13, the steering gear body 14 is installed, and the second flange 17 is ensured to be connected to the first flange 15.

[0046] The staff rotates the connecting ring 16, causing the connecting ring 16 to move vertically outside the connecting shaft 13. The connecting ring 16 squeezes the push rod 23, and the push rod 23 pushes the piston body 22 downward inside the sleeve 2. The movement of the piston body 22 drives the hydraulic oil inside the sleeve 2 and the connecting pipe 3 to flow, causing the hydraulic oil to flow into the connecting groove 33 through the connecting hole 36. As the hydraulic oil flows in, the piston rod 34 moves inside the connecting groove 33. When the amount of hydraulic oil is sufficient, the piston rod 34 pushes the block 35 to protrude from the lower end of the connecting pipe 3 and move to the lower end of the second flange 17. At this time, the sleeve 2, the connecting pipe 3 and the block 35 jointly connect the first flange 15 and the second flange 17, maintaining the stability of the connection between the connecting shaft 13 and the steering gear body 14.

[0047] Start the drive motor, which drives the transmission shaft 11 to rotate through the gearbox 1. The transmission shaft 11 transmits the rotational motion to the steering gear body 14 through the universal joint 12 and the connecting shaft 13, causing it to start rotating. Connect a load to the other end of the steering gear body 14. By applying the load, the steering gear body 14 is subjected to fatigue resistance testing.

[0048] The staff resets the connecting ring 16, so that the elastic force of the spring 24 pushes the piston body 22 to reset, and the hydraulic oil is extracted according to the piston body 22, so that the hydraulic oil inside the connecting groove 33 flows back to the inside of the connecting pipe 3, so that the piston rod 34 can pull the block 35 to reset, so that the second flange 17 is disconnected from the first flange 15, making it easier for the staff to disassemble and assemble the second flange 17.

[0049] It should be noted that the present invention is a steering gear testing device, and the components in the present invention are all components known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or conventional experimental methods.

[0050] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. Steering gear testing device, characterized in that, The invention comprises a gear box (1), a sleeve (2) and a connecting pipe (3), wherein the outer wall of the lower end of the gear box (1) is provided with a transmission shaft (11), the outer wall of the lower end of the transmission shaft (11) is connected to a universal joint (12), the outer wall of the lower end of the universal joint (12) is connected to a connecting shaft (13), a second flange (17) is installed at the lower end of the outer wall of the connecting shaft (13), sleeves (2) distributed in a circular array are embedded and installed inside the second flange (17), a piston body (22) is provided inside the sleeve (2), the outer wall of the lower end of the sleeve (2) is threadedly connected to the connecting pipe (3), fixing blocks (32) are installed on both sides of the outer wall of the lower end of the connecting pipe (3), and a connecting groove (33) is provided inside the fixing block (32).

2. The steering gear testing device according to claim 1, characterized in that: A steering gear body (14) is provided on the outer wall of the lower end of the connecting shaft (13), and a first flange (15) is provided on the upper end of the outer wall of the steering gear body (14). The first flange (15) is located at the lower end of the second flange (17), and the fixed block (32) is located at the lower end of the first flange (15).

3. The steering gear testing device according to claim 1, characterized in that: A connecting ring (16) is threadedly connected to one side of the outer wall of the connecting shaft (13), and the connecting ring (16) is located at the upper end of the second flange (17). A push rod (23) is installed on the outer wall of the upper end of the piston body (22), and the outer wall of the upper end of the push rod (23) is in contact with the outer wall of the lower end of the connecting ring (16).

4. The steering gear testing device according to claim 1, characterized in that: A sealing ring is provided at the contact point between the connecting pipe (3) and the sleeve (2); a limiting ring (31) is installed on one side of the inner wall of the connecting pipe (3); a spring (24) is provided on the outer wall of the upper end of the limiting ring (31); and the piston body (22) is elastically connected to the limiting ring (31) via the spring (24).

5. The steering gear testing device according to claim 1, characterized in that: Limiting blocks (21) are installed on both sides of the inner wall of the sleeve (2), and the limiting blocks (21) are located at the upper end of the piston body (22).

6. The steering gear testing device according to claim 1, characterized in that: Communication holes (36) are provided on both sides of the upper end of the inner wall of the communication groove (33) and the lower end of the inner wall of the connecting pipe (3), and the communication groove (33) is connected to the interior of the connecting pipe (3) through the communication holes (36).

7. The steering gear testing device according to claim 1, characterized in that: A piston rod (34) is provided inside the communicating groove (33), and the piston rod (34) passes through the communicating groove (33), and a clamping block (35) is provided on the outer wall of one end thereof.

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