Steering engine performance testing device and testing system

Abstract

The utility model discloses a steering engine performance testing device and a testing system, and belongs to the technical field of steering engine performance testing. The technical problems that an existing mechanical load simulator is complex in structure and only can apply specific force for loading are solved. The steering engine performance testing device comprises a loading frame, a spring loader mechanism and an actuating shaft. A force sensor is arranged on the actuating shaft, and a position sensor is arranged on the loading frame; the loading frame comprises a steering engine motion area and a spring loading area; one end of the actuating shaft penetrates through the spring loading area and is in sliding connection with the loading frame; the spring loader mechanism is located in the spring loading area and arranged on the actuating shaft in a sleeving mode, and the actuating shaft can drive the spring loader mechanism to conduct loading action. The steering engine performance testing device provided by the utility model is simple in structure, and can realize loading of various loading forces.

Description

Technical Field

[0001] The utility model relates to the technical field of steering gear performance testing, in particular to a steering gear performance testing device and a testing system. Background Art

[0002] The research on load simulators at home and abroad started early, and many countries have continuously researched and developed some load simulators for load simulation systems. Existing load simulators can be divided into three categories according to different execution structures: mechanical loading load simulators, electro-hydraulic loading load simulators, and electric loading load simulators. Among them, the existing mechanical load simulators use mass blocks or inertia disks as loads, and use torsion springs and elastic steel plates as elastic loads. The structure is complex and can only achieve specific force loading. Summary of the invention

[0003] In view of the above analysis, the utility model aims to provide a servo performance test device and a test system to solve the technical problems that the existing load simulator has a complex structure and can only apply a specific force.

[0004] The purpose of this utility model is mainly achieved through the following technical solutions:

[0005] On the one hand, the utility model provides a steering gear performance test device, including a loading frame, a spring loader mechanism and an actuating shaft;

[0006] A force sensor is provided on the actuating shaft, and a position sensor is provided on the loading frame; the loading frame includes a servo movement area and a spring loading area; one end of the actuating shaft passes through the spring loading area and is slidably connected to the loading frame; the spring loader mechanism is located in the spring loading area and is sleeved on the actuating shaft, and the actuating shaft can drive the spring loader mechanism to perform loading action; the force sensor is used to measure real-time push-pull force data; the position sensor is used to measure real-time position data.

[0007] In a possible design, the loading frame includes a first vertical fixing plate, a second vertical fixing plate and a third vertical fixing plate of the same structure; the first vertical fixing plate, the second vertical fixing plate and the third vertical fixing plate are arranged in sequence and in parallel, and the three are fixed by a plurality of transverse connecting rods;

[0008] The area enclosed by the first vertical fixed plate, the second vertical fixed plate and multiple transverse connecting rods constitutes a servo movement area; the area enclosed by the second vertical fixed plate, the third vertical fixed plate and multiple transverse connecting rods constitutes a spring loading area; the second end of the actuating shaft passes through the second vertical fixed plate and the third vertical fixed plate and extends outward.

[0009] In one possible design, the spring loader mechanism includes a stopper, a first guide tube and a second guide tube, and a first load spring and a second load spring;

[0010] The first guide tube and the second guide tube are sleeved on the actuating shaft, and the limit block is located between the first guide tube and the second guide tube.

[0011] The first guide tube, the limit block and the second guide tube are sleeved on the second end of the actuating shaft in sequence; the first load spring is sleeved on the first guide tube, and the second load spring is sleeved on the second guide tube.

[0012] In a possible design, an adapter is also included; the servo motor is fixedly connected to the first end of the actuating shaft via the adapter.

[0013] In a possible design, it also includes a connecting piece, a linear guide rail and a slider; the slider is arranged on the linear guide rail;

[0014] A horizontal fixed bottom plate is arranged at the bottom of the steering gear movement area, a linear guide rail is arranged on the horizontal fixed bottom plate, a top end of the connecting piece is fixedly connected to the adapter, and a lower end of the connecting piece is fixedly connected to the sliding block.

[0015] In a possible design, a first threaded hole is provided on the adapter, a second threaded hole is provided on the top of the connecting member, screws are provided in the first threaded hole and the second threaded hole, and the connecting member and the adapter are connected by screws.

[0016] In one possible design, the force sensor is a tension-compression sensor;

[0017] The tension pressure sensor is installed between the connecting piece and the actuating shaft, and the connecting piece and the actuating shaft are connected through the tension pressure sensor.

[0018] In one possible design, the position sensor is a grating position sensor;

[0019] The grating position sensor comprises a moving part and a stationary part, wherein the moving part is arranged on a connecting member and the stationary part is arranged on a fixed frame.

[0020] In one possible design, a bushing is also included;

[0021] The second vertical fixing plate is provided with a first through hole, a bushing is provided on the first through hole, and the actuating shaft passes through the second vertical fixing plate through the bushing.

[0022] On the other hand, the utility model also provides a steering gear performance test system, including a steering gear performance test device and a power supply, a servo driver, a controller, a test computer and a transmitter;

[0023] The power supply is used to supply power to the steering gear performance test device, servo driver, controller, test computer and transmitter; the controller is electrically connected to the test computer; the controller is control-connected to the servo driver; the servo driver can drive the tested steering gear to act on the spring loader mechanism of the steering gear performance test device through the actuator shaft; the real-time push-pull force data output by the force sensor is sent to the test computer through the transmitter; the real-time position data measured by the position sensor is sent to the controller through the data line.

[0024] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0025] (1) The utility model can measure the push-pull force data of the tested servo when it moves by using a force sensor, and can measure the position data of the tested servo when it moves by using a position sensor. By repeatedly measuring the push-pull force data and position data of the tested servo, the pre-compression amount of the first load spring and the second load spring can be obtained; according to the pre-compression amount, the fastening nuts located at the ends of the first transverse link, the second transverse link and the third transverse link away from the tested servo are adjusted, that is, the pre-tightening force of the first load spring and the second load spring is adjusted, thereby realizing the loading of multiple loading forces.

[0026] (2) The utility model forms a loading frame of the steering gear performance test device by arranging a first vertical fixing plate, a second vertical fixing plate, a third vertical fixing plate and a plurality of transverse connecting rods, thereby providing stable and firm support for other structural components of the loading device.

[0027] (3) The utility model can guide the servo under test to make it reciprocate along a straight line by providing a connecting piece, a slider and a linear guide rail, thereby ensuring that the servo under test moves in the same direction each time, thereby ensuring the stability of the test device and the test accuracy.

[0028] In the present invention, the above-mentioned technical solutions can also be combined with each other to achieve more preferred combination solutions. Other features and advantages of the present invention will be described in the subsequent description, and some advantages can become obvious from the description, or can be understood by implementing the present invention. The purpose and other advantages of the present invention can be achieved and obtained through the contents particularly pointed out in the embodiments of the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The accompanying drawings are only used for the purpose of illustrating specific embodiments and are not to be considered as limiting the present invention. In the entire drawings, the same reference symbols represent the same components.

[0030] Figure 1 It is a structural schematic diagram of the steering gear performance testing device of the utility model;

[0031] Figure 2It is a structural schematic diagram of the spring loader mechanism of the utility model;

[0032] Figure 3 It is a structural schematic diagram of the steering gear performance testing system of the utility model.

[0033] Reference numerals:

[0034] 1-first vertical fixing plate; 2-second vertical fixing plate; 3-third vertical fixing plate; 4-tested servo; 5-adapter; 6-connector; 7-slider; 8-linear guide; 9-horizontal fixed base plate; 10-tension pressure sensor; 11-actuating shaft; 12-bushing; 13-first guide tube; 14-first load spring; 15-second guide tube; 16-second load spring; 17-limiting block; 18-first transverse connecting rod; 19-second transverse connecting rod; 20-third transverse connecting rod; 21-fastening nut; 22-grating position sensor. DETAILED DESCRIPTION

[0035] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0036] The utility model provides a steering gear performance testing device, such as Figure 1 and Figure 2 As shown, the servo performance test device includes a loading frame, a spring loader mechanism and an actuating shaft 11; a force sensor is provided on the actuating shaft 11, and a position sensor is provided on the loading frame; the loading frame includes a servo movement area and a spring loading area; the actuating shaft 11 includes a first end and a second end, the first end of the actuating shaft 11 is connected to the servo 4 under test located in the servo movement area, and the second end of the actuating shaft 11 passes through the spring loading area and is slidably connected to the loading frame; the spring loader mechanism is located in the spring loading area and is sleeved on the actuating shaft 11, and the servo 4 under test drives the spring loader mechanism to perform a loading action through the actuating shaft 11; the force sensor is used to measure the push-pull force data of the servo 4 under test when it moves; and the position sensor is used to measure the real-time position data of the servo 4 under test when it moves.

[0037] Specifically, the servo performance test device of the utility model includes a loading frame, which serves as a strength and rigidity support during the loading process of the loading device, and is used to support the servo 4 under test, the spring loader mechanism and the actuating shaft 11; wherein, adjacent servo motion areas and spring loading areas are provided on the loading frame, the servo 4 under test is provided in the servo motion area and can perform reciprocating motion along the axial direction of the actuating shaft 11; the spring loader mechanism is provided in the spring loading area and is driven by the actuating shaft 11 to perform loading motion. During the loading process of the servo 4 under test driving the spring loader mechanism, the force sensor can measure the push-pull force data of the servo 4 under test when it moves, and the position sensor can measure the position data of the servo 4 under test when it moves. By measuring the push-pull force data and position data of the servo 4 under test multiple times, the loading of multiple loading forces can be realized, and the load accuracy of the servo 4 under test can be obtained.

[0038] In order to better fix the servo 4 and spring loader mechanism under test, as Figure 1 As shown, the loading frame of the utility model includes a first vertical fixing plate 1, a second vertical fixing plate 2 and a third vertical fixing plate 3 with the same structure; the first vertical fixing plate 1, the second vertical fixing plate 2 and the third vertical fixing plate 3 are arranged in sequence and arranged in parallel, and the three are fixed by multiple transverse connecting rods; the area between the first vertical fixing plate 1 and the second vertical fixing plate 2 constitutes a steering gear movement area; the area between the second vertical fixing plate 2 and the third vertical fixing plate 3 constitutes a loading area; the second end of the actuating shaft 11 passes through the second vertical fixing plate 2 and the third vertical fixing plate 3 and is slidably connected thereto.

[0039] Specifically, the first vertical fixing plate 1, the second vertical fixing plate 2 and the third vertical fixing plate 3 are arranged in parallel in sequence, and the three are fixed by a plurality of transverse connecting rods, and the plurality of transverse connecting rods are arranged at the edge of each vertical fixing plate. The area enclosed by the first vertical fixing plate 1, the second vertical fixing plate 2 and the plurality of transverse connecting rods constitutes a steering gear movement area, and the tested steering gear 4 is located in the steering gear movement area and can reciprocate along the axial direction of the actuating shaft 11. The area enclosed by the second vertical fixing plate 2, the third vertical fixing plate 3 and the plurality of transverse connecting rods constitutes a spring loading area, and the spring loader mechanism is located in the area and the spring loader mechanism is sleeved on the actuating shaft 11. When the tested steering gear 4 drives the actuating shaft 11 and reciprocates along the axial direction of the actuating shaft 11, since the actuating shaft 11 passes through the second vertical fixing plate 2 and the third vertical fixing plate 3 and is slidably connected to the two, the other end of the actuating shaft 11 can drive the spring loader mechanism to perform a loading action.

[0040] Compared with the prior art, the utility model forms a loading frame of the servo performance test device by arranging a first vertical fixing plate 1, a second vertical fixing plate 2, a third vertical fixing plate 3 and a plurality of transverse connecting rods, thereby providing stable and firm support for other structural components of the loading device.

[0041] It should be noted that the first vertical fixing plate 1, the second vertical fixing plate 2 and the third vertical fixing plate 3 of the utility model are all equilateral triangle fixing plates, and threaded holes are provided at the three corners of the three equilateral triangle fixing plates; multiple transverse connecting rods include a first transverse connecting rod 18, a second transverse connecting rod 19 and a third transverse connecting rod 20, and the first transverse connecting rod 18, the second transverse connecting rod 19 and the third transverse connecting rod 20 all penetrate the corresponding threaded holes on the first vertical fixing plate 1, the second vertical fixing plate 2 and the third vertical fixing plate 3 and extend outward, and both ends of the first transverse connecting rod 18, the second transverse connecting rod 19 and the third transverse connecting rod 20 are provided with fastening nuts 21, and each transverse connecting rod fixes each vertical fixing plate together through the corresponding fastening nuts 21, thereby forming a stable loading frame.

[0042] In order to reduce the weight of the loading device, three corners of the first vertical fixing plate 1, the second vertical fixing plate 2 and the third vertical fixing plate 3 of the utility model are all provided with notches.

[0043] It should be noted that in order to further strengthen the firmness between the second vertical fixing plate 2 and the third vertical fixing plate 3, rectangular reinforcing plates are provided on the inclined surfaces on both sides of the second vertical fixing plate 2 and the third vertical fixing plate 3, and the four right angles of the rectangular reinforcing plates are fixedly connected to the sides of the second vertical fixing plate 2 and the third vertical fixing plate 3 by bolts.

[0044] It should be noted that the steering gear performance test device of the utility model is a bidirectional passive mechanical load. In order to realize the bidirectional passive mechanical load, Figure 2 As shown, the spring loader mechanism of the utility model includes a first guide tube 13, a second guide tube 15, a first load spring 14, a second load spring 16 and a limit block 17; the first guide tube 13, the limit block 17 and the second guide tube 15 are sequentially sleeved on the second end of the actuating shaft 11; the first load spring 14 is sleeved on the first guide tube 13, and the second load spring 16 is sleeved on the second guide tube 15.

[0045] Specifically, the first guide tube 13 and the second guide tube 15 have the same structure. One end of the first guide tube 13 is fixed on the second vertical fixing plate 2, and the other end is adjacent to the limit block 17 and the two are separated by a certain distance; one end of the second guide tube 15 is fixed on the third vertical fixing plate 3, and the other end is adjacent to the limit block 17 and the two are separated by a certain distance. The inner diameters of the first guide tube 13 and the second guide tube 15 are both larger than the outer diameter of the actuating shaft 11. The limit block 17 is arranged between the first guide tube 13 and the second guide tube 15 and keeps a certain distance from the adjacent ends of the two. The limit block 17 is fixedly connected to the actuating shaft 11; the first load spring 14 is sleeved on the first guide tube 13, and the second load spring 16 is sleeved on the second guide tube 15; when the servo 4 under test drives the actuating shaft 11 along the actuating shaft 11, the ..., the limit block 17 is arranged between the first guide tube 13 and the second guide tube 15 and keeps a certain distance from the adjacent ends of the two. The limit block 1 When the axial direction moves in the direction away from the second vertical fixed plate 2, since one end of the first load spring 14 abuts on the second vertical fixed plate 2 and the other end abuts on the limit block 17, the limit block 17 will compress the first load spring 14 under the drive of the actuating shaft 11; on the contrary, when the tested servo 4 drives the actuating shaft 11 to move along the axial direction of the actuating shaft 11 in the direction close to the second vertical fixed plate 2, since one end of the second load spring 16 abuts on the third vertical fixed plate 3 and the other end abuts on the limit block 17, the limit block 17 will compress the second load spring 16 under the drive of the actuating shaft 11; the tested servo 4 reciprocates multiple times, and the position sensor is used to measure the position movement data of the servo, and the force sensor is used to measure the force data of the tested servo 4, so as to obtain the movement accuracy of the tested servo 4.

[0046] It should be noted that the prior art can only achieve loading with a specific force, but cannot adjust the loading force; compared with the prior art, the present invention can adjust the preload force of the first load spring 14 and the second load spring 16 by adjusting the fastening nut 21 located at the end of the first transverse link 18, the second transverse link 19 and the third transverse link 20 away from the servo under test, thereby achieving loading with multiple loading forces. That is, the multiple loading forces of the present invention are achieved by determining the required spring pre-compression amount through force sensors and displacement measurement, and then adjusting the spring pre-compression force using the fastening nut 21.

[0047] In order to connect the tested steering gear 4 with the actuating shaft 11 , the steering gear performance testing device of the present invention further comprises an adapter 5 ; the steering gear is fixedly connected to the first end of the actuating shaft 11 via the adapter 5 .

[0048] Specifically, Figure 1 As shown, a U-shaped opening is provided at one end of the adapter 5, a threaded hole is provided on the U-shaped opening, and a spherical bearing is provided on the tested servo 4. The spherical bearing of the tested servo 4 corresponds to the position of the U-shaped opening of the adapter 5 and the two are connected by a pin.

[0049] It should be noted that, in the present invention, the tested servo 4 is connected to the actuating shaft 11 through the adapter 5 , so that the tested servo 4 drives the spring loader mechanism on the actuating shaft 11 to perform a loading action through the actuating shaft 11 .

[0050] In order to guide the servo 4 under test, Figure 1 As shown, the servo performance testing device of the utility model further includes a connecting member 6, a linear guide rail 8 and a slider 7; the slider 7 is arranged on the linear guide rail 8; a horizontal fixed bottom plate 9 is arranged at the bottom of the servo motion area, the linear guide rail 8 is arranged on the horizontal fixed bottom plate 9, the top end of the connecting member 6 is fixedly connected to the adapter 5, and the lower end of the connecting member 6 is fixedly connected to the slider 7.

[0051] Specifically, the linear guide rail 8 is arranged on a horizontal fixed base plate 9 and is located directly below the servo motor 4 under test. A slider 7 is provided on the linear guide rail 8. The top end of the slider 7 is fixedly connected to the bottom end of the connecting member 6. The top end of the connecting member 6 is fixedly connected to the adapter 5. When the servo motor 4 under test drives the actuating shaft 11 and the spring loader mechanism on the actuating shaft 11 to reciprocate through the adapter 5, the servo motor 4 under test will move linearly along the linearity guide rail due to the action of the adapter 5, the connecting member 6 and the slider 7.

[0052] The utility model can guide the tested steering gear 4 by providing the connecting piece 6, the sliding block 7 and the linear guide rail 8, so that the tested steering gear 4 can perform reciprocating motion along a straight line, thereby ensuring that the tested steering gear 4 has the same motion direction each time, thereby ensuring the stability of the test device and the test accuracy.

[0053] It should be noted that the adapter 5 of the present invention is provided with a first threaded hole, the top of the connecting member 6 is provided with a second threaded hole, screws are provided in the first threaded hole and the second threaded hole, and the connecting member 6 and the adapter 5 are connected by screws.

[0054] It should be noted that the force sensor is a tension pressure sensor 10; the tension pressure sensor 10 is installed between the connecting member 6 and the actuating shaft 11, and the connecting member 6 and the actuating shaft 11 are connected through the tension pressure sensor 10. The position sensor is a grating position sensor 22; the grating position sensor 22 includes a moving part and a stationary part, the moving part is arranged on the connecting member 6, and the stationary part is arranged on the fixed frame.

[0055] In order to fix the setting position of the actuating shaft 11 on the second vertical fixing plate 2 and avoid wear between the actuating shaft 11 and the second vertical fixing plate 2, the servo performance testing device of the utility model also includes a bushing 12; a first through hole is provided on the second vertical fixing plate 2, the bushing 12 is arranged on the first through hole, and the actuating shaft 11 passes through the second vertical fixing plate 2 through the bushing 12.

[0056] On the other hand, the utility model also provides a steering gear performance test system, such as Figure 3 As shown, the servo performance test system includes the above-mentioned servo performance test device, and also includes a power supply, a servo drive, a controller, a test computer and a transmitter; wherein the power supply is used to supply power to the servo performance test device, the servo drive, the controller, the test computer and the transmitter; the controller is electrically connected to the test computer; the controller is control-connected to the servo drive; the servo drive can drive the servo under test to act on the spring loader mechanism of the servo performance test device through the actuating shaft 11; the real-time push-pull force data of the servo under test 4 output by the pull-pressure sensor 10 is sent to the test computer through the transmitter; the real-time position data of the servo under test 4 measured by the grating position sensor 22 is sent to the controller through the data line.

[0057] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the present invention should be included in the protection scope of the present invention.

Claims

1. A steering gear performance testing device, characterized in that: including a loading frame, a spring loader mechanism and an actuating shaft; A force sensor is provided on the actuating shaft, and a position sensor is provided on the loading frame; the loading frame includes a servo movement area and a spring loading area; one end of the actuating shaft passes through the spring loading area and is slidably connected to the loading frame; the spring loader mechanism is located in the spring loading area and is sleeved on the actuating shaft, and the actuating shaft can drive the spring loader mechanism to perform a loading action; the force sensor is used to measure real-time push-pull force data; and the position sensor is used to measure real-time position data.

2. The steering gear performance testing device according to claim 1, characterized in that: The loading frame comprises a first vertical fixing plate, a second vertical fixing plate and a third vertical fixing plate of the same structure; the first vertical fixing plate, the second vertical fixing plate and the third vertical fixing plate are arranged in sequence and in parallel, and the three are fixed by a plurality of transverse connecting rods; The area enclosed by the first vertical fixed plate, the second vertical fixed plate and the multiple transverse connecting rods constitutes a servo movement area; the area enclosed by the second vertical fixed plate, the third vertical fixed plate and the multiple transverse connecting rods constitutes a spring loading area; the second end of the actuating shaft passes through the second vertical fixed plate and the third vertical fixed plate and extends outward.

3. The steering gear performance testing device according to claim 2, characterized in that: The spring loader mechanism includes a limit block, a first guide tube and a second guide tube, and a first load spring and a second load spring; The first guide tube and the second guide tube are sleeved on the actuating shaft, the limit block is located between the first guide tube and the second guide tube, and the first guide tube, the limit block and the second guide tube are sequentially sleeved on the second end of the actuating shaft; the first load spring is sleeved on the first guide tube, and the second load spring is sleeved on the second guide tube.

4. The steering gear performance testing device according to claim 1, characterized in that: It also includes an adapter; the steering gear is fixedly connected to the first end of the actuating shaft through the adapter.

5. The steering gear performance testing device according to claim 4, characterized in that: It also includes a connecting piece, a linear guide rail and a slider; the slider is arranged on the linear guide rail; A horizontal fixed bottom plate is provided at the bottom of the steering gear movement area, the linear guide rail is provided on the horizontal fixed bottom plate, the top end of the connecting member is fixedly connected to the adapter, and the lower end of the connecting member is fixedly connected to the slider.

6. The steering gear performance testing device according to claim 5, characterized in that: The adapter is provided with a first threaded hole, the top of the connecting member is provided with a second threaded hole, the first threaded hole and the second threaded hole are both provided with screws, and the connecting member is connected to the adapter by screws.

7. The steering gear performance testing device according to claim 6, characterized in that: The force sensor is a tension pressure sensor; The tension and pressure sensor is installed between the connecting member and the actuating shaft, and the connecting member and the actuating shaft are connected through the tension and pressure sensor.

8. The steering gear performance testing device according to claim 7, characterized in that: The position sensor is a grating position sensor; The grating position sensor comprises a moving part and a stationary part, wherein the moving part is arranged on the connecting member, and the stationary part is arranged on the fixed frame.

9. The steering gear performance testing device according to claim 2, characterized in that: It also includes a bushing; the second vertical fixing plate is provided with a first through hole, the bushing is arranged on the first through hole, and the actuating shaft passes through the second vertical fixing plate through the bushing.

10. A steering gear performance test system, characterized in that: The device comprises the steering gear performance test device as claimed in any one of claims 1 to 9, as well as a power supply, a servo drive, a controller, a test computer and a transmitter; The power supply is used to supply power to the servo performance test device, servo driver, controller, test computer and transmitter; the controller is electrically connected to the test computer; the controller is control-connected to the servo driver; the servo driver can drive the servo under test to act on the spring loader mechanism of the servo performance test device through the actuator shaft; the real-time push-pull force data output by the force sensor is sent to the test computer through the transmitter; the real-time position data measured by the position sensor is sent to the controller through the data line.

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