CN217878357U

CN217878357U - Vehicle steering gear test system

Info

Publication number: CN217878357U
Application number: CN202222267331.4U
Authority: CN
Inventors: 张贵民; 沈建奇
Original assignee: Shanghai Shunte Automobile Technology Co ltd
Current assignee: Shanghai Shunte Automobile Technology Co ltd
Priority date: 2022-08-26
Filing date: 2022-08-26
Publication date: 2022-11-22
Anticipated expiration: 2032-08-26

Abstract

The utility model discloses a vehicle steering ware test system, this vehicle steering ware test system include the support, are surveyed piece and two test assembly, are surveyed the piece and include moving member and two pull rods, and the moving member is connected to the support and can follows the horizontal direction and remove, and two pull rods are connected to the moving member through two first ball joints respectively. The test assembly comprises a first drive rod, a second drive rod and a connecting rod, the first drive rod can move in the vertical direction and can rotate around the axis of the first drive rod, a connecting portion is arranged at one end of the first drive rod, and the connecting portion is connected with the pull rod through a second spherical hinge. The two ends of the connecting rod are respectively connected with the connecting part and the second driving rod through two spherical hinges, and the second driving rod can move along the horizontal direction. The utility model discloses two test assembly simulation wheels of accessible receive the road conditions that the height fluctuation jolted and the side direction load power that receives, and then the atress condition of spare parts such as test car driving in-process steering wheel, steering column, universal joint, torsion bar, moving member, pull rod.

Description

Vehicle steering gear test system

Technical Field

The utility model relates to a vehicle test mechanical equipment field, concretely relates to vehicle steering ware test system.

Background

The vehicle needs to be tested in various states, such as a state that the wheel is passively rotated, a state that the wheel is actively rotated, a state that the vehicle is started to accelerate, a state that the wheel is braked by a brake, and the like.

At present, generally, the load of two wheels is simulated and tested through a vehicle steering gear testing system, and the vehicle steering gear testing system in the prior art includes two modes, wherein the first mode is to connect two actuators (hydraulic cylinders or linear motors) to two ends of two pull rods through two ball joints, the two pull rods are located at two ends of a rack and are connected to a torsion rod through the matching of the rack and a gear, and when the two actuators are actuated, the rack is loaded along the horizontal direction through the two pull rods, and the horizontal direction dragging is applied. The two actuators simulate the lateral force applied to the two wheels during steering, and the two actuators apply preset lateral force to drive the pull rod to move in the horizontal direction, so that the steering force required to be applied by the torsion rod can be tested, or certain torque is applied to the torsion rod, and the steering pulling force provided for the wheels on the two sides can be simulated and measured. The second mode is basically similar to the first mode, and is to simulate the lateral force applied to the steering of two wheels through two actuators (hydraulic cylinders or linear motors), and only a height adjusting device is added to adjust the heights of two pull rods so as to simulate a certain road effect.

The first mode can only simulate the lateral force of the vehicle, cannot simulate the fluctuation change of any road surface, and is greatly different from the real driving scene of the vehicle. In addition, if the linear motor is used for driving the pull rod to move, the output force of the linear motor is generally small, and the requirement cannot be met. The second mode can only simulate a single road effect, when a vehicle runs on a real road, wheels can continuously bump in a fluctuating mode according to the change of the road, the process is a full-dynamic process, and the test result of the second mode also has deviation from the actual situation. Based on the problems in the prior art, it is urgently needed to develop a vehicle steering device testing system capable of simulating the driving process of a vehicle in an all-around manner.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a vehicle steering ware test system to solve the problem that exists among the above-mentioned prior art.

In order to solve the above problem, according to an aspect of the present invention, there is provided a vehicle steering device testing system, comprising:

a support;

the device comprises a tested part and a base, wherein the tested part comprises a moving part and two pull rods, the moving part extends along the horizontal direction and is connected to a support in a horizontally movable manner, and one ends of the two pull rods are symmetrically connected to two ends of the moving part through two first spherical hinges respectively;

the two testing assemblies are respectively positioned at the other ends of the two pull rods, each testing assembly comprises a first driving rod, a second driving rod and a connecting rod, the first driving rod extends along the vertical direction and is connected to the support, the first driving rod can move along the axis direction of the first driving rod and can rotate around the axis of the first driving rod, the first driving rod is provided with a connecting part, the connecting part is connected with the pull rods through second spherical hinges, and the hinge point of the connecting part and the pull rods is spaced from the axis of the first driving rod; one end of the connecting rod is connected with the connecting part through a third spherical hinge, the other end of the connecting rod is connected with the second driving rod through a fourth spherical hinge, the second driving rod extends along the horizontal direction and is connected to the support, and the second driving rod can move along the axis direction of the second driving rod.

In one embodiment, the first drive rod is a first piston rod, and the test assembly further comprises a first hydraulic cylinder fixedly connected to the bracket, an end of the first piston rod remote from the connecting portion is located in the first hydraulic cylinder, and the first hydraulic cylinder is operable to drive the first piston rod to move in a vertical direction.

In one embodiment, the two first driving rods are respectively positioned above or below the two pull rods.

In one embodiment, two of the first driving levers are symmetrically disposed with respect to two of the pull levers.

In one embodiment, the second driving rod is a second piston rod, the testing assembly further includes a second hydraulic cylinder, the second hydraulic cylinder is connected to the support, an end of the second piston rod, which is far away from the fourth spherical hinge, is located in the second hydraulic cylinder, and the second hydraulic cylinder is operable to drive the second piston rod to move along the horizontal direction.

In one embodiment, two of the test assemblies are symmetrically disposed with respect to two of the tie rods.

In one embodiment, the connecting portion is a clevis, the second ball joint is located at the top of the clevis, and the third ball joint is located within the clevis.

In one embodiment, the moving member is further provided with a rack, and the measured member further includes:

the torsion rod can rotate around the axis of the torsion rod and is provided with a gear meshed with the rack, and the moving piece can be driven to move by the meshing of the gear and the rack in the rotation process of the torsion rod; and

the steering column is connected to one end, far away from the moving part, of the torsion rod through a universal joint and can operatively drive the torsion rod to rotate; and

and the steering wheel is connected with the steering column.

In one embodiment, an integrated torque sensor and encoder are provided on the steering column.

In one embodiment, the first and/or second drive rod and/or the connecting rod and/or the pull rod is further provided with a plurality of position sensors or integrated force sensors.

The utility model discloses a two test assembly both can simulate the vehicle and receive the road conditions that the height fluctuation jolted at the in-process wheel of going, can also simulate the side direction load power that the vehicle turned to in-process wheel and received, and through first actuating lever, the second actuating lever, the vehicle in-process of traveling can also be simulated in the cooperation of pull rod and connecting rod, the various gesture changes of wheel on the space, and then according to the wheel at the in-process stress state of going, the accurate test car in-process steering wheel that goes, steering column, universal coupling, the torsion bar, the moving member, the stress condition of spare parts such as pull rod.

Drawings

Fig. 1 is a perspective view of a vehicle steering gear testing system according to an embodiment of the present invention.

Fig. 2 is a perspective view of the test assembly in the embodiment of fig. 1.

Fig. 3 is a perspective view of a measured object according to an embodiment of the present invention.

Reference numerals are as follows: 100. a vehicle steering gear testing system; 1. a support; 2. a measured piece; 21. a moving member; 22. a pull rod; 23. a torsion bar; 24. a torsion actuator; 25. a housing; 26. a steering column; 27. a steering wheel; 3. testing the component; 31. a first piston rod; 311. a first hydraulic cylinder; 312. a connecting portion; 32. a second piston rod; 321. a second hydraulic cylinder; 33. a connecting rod; 41. a first spherical hinge; 42. a second spherical hinge; 43. a third spherical hinge; 44. and a fourth spherical hinge.

Detailed Description

The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the objects, features and advantages of the invention can be more clearly understood. It should be understood that the embodiments shown in the drawings are not intended as limitations on the scope of the invention, but are merely illustrative of the true spirit of the technical solutions of the present invention.

In the following description, for the purposes of illustrating various disclosed embodiments, certain specific details are set forth in order to provide a thorough understanding of the various disclosed embodiments. One skilled in the relevant art will recognize, however, that the embodiments may be practiced without one or more of the specific details. In other instances, well-known devices, structures and techniques associated with this application may not be shown or described in detail to avoid unnecessarily obscuring the description of the embodiments.

Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

In the following description, for the sake of clarity of illustrating the structure and operation of the present invention, directional terms are used, but the terms "front", "rear", "left", "right", "outer", "inner", "outer", "inward", "upper", "lower", etc. should be interpreted as words of convenience and should not be interpreted as limiting terms.

The utility model relates to a vehicle steering ware test system 100, but this vehicle steering ware test system 100 all-round simulation automobile driving process's road conditions to detect the atress condition of spare parts such as car driving in-process steering wheel 27, steering column 26, universal joint, torsion bar 23, moving member 21 and pull rod 22. Specifically, this vehicle steering ware test system 100 includes support 1, measured 2 and two test assembly 3, wherein, support 1 is used for supporting measured 2 and two test assembly 3, and measured 2 is the spare part that needs the test such as steering wheel 27, steering column 26, universal joint, torsion bar 23, moving member 21 and pull rod 22, and two test assembly 3 can simulate two wheel atress circumstances in the automobile driving process.

Referring to fig. 1 specifically, the detected part 2 includes a moving part 21 and two pull rods 22, wherein the moving part 21 is disposed along the horizontal direction and connected to the support 1, the moving part 21 can also move along the horizontal direction, the two pull rods 22 are respectively located at two ends of the moving part 21, one ends of the two pull rods 22 are respectively connected to two ends of the moving part 21 through two first spherical hinges 41, and the moving part 21 can drive the two pull rods 22 to move along the horizontal direction when moving along the horizontal direction. Two test assemblies 3 are located at each end of the two tie rods 22. As can be seen from fig. 1, two testing assemblies 3 are respectively located at one end of the two pull rods 22 away from the moving member 21. And each test assembly 3 comprises a first piston rod 31, a second piston rod 32 and a connecting rod 33. The first piston rod 31 and the second piston rod 32 are both driven by a hydraulic cylinder connected to the bracket 1. The first piston rod 31 and the corresponding hydraulic cylinder are used for simulating a road condition that a wheel is subjected to jolt and vibration in the driving process of the vehicle, and the second piston rod 32 and the corresponding hydraulic cylinder are matched with the connecting rod 33 to simulate the condition that the wheel is subjected to lateral force in the driving process of the vehicle. The specific implementation scheme is as follows: the first piston rod 31 is disposed in a vertical direction, an axial direction of the first piston rod 31 is the vertical direction, and the first piston rod 31 is movable in the vertical direction and also rotatable around an axial line thereof by an external force. In addition, one end of the first piston rod 31 close to the pull rod 22 is provided with a connecting part 312, the connecting part 312 is connected with the pull rod 22 through a second spherical hinge 42, and a hinge point of the connecting part 312 and the pull rod 22 is spaced from the axis of the first piston rod 31. Because the first piston rod 31 can move in the vertical direction, the road condition of the automobile suffering from bumps and undulations can be simulated by adjusting the amplitude and frequency of the movement of the first piston rod 31 in the vertical direction, and the connecting part 312 drives the pull rod 22 to move. The two ends of the connecting rod 33 are connected to the connecting portion 312 and the second piston rod 32 through two spherical hinges, respectively. For convenience of description, the connecting rod 33 is connected with the connecting portion 312 through the third spherical hinge 43, and the connecting rod 33 is connected with the second piston rod 32 through the fourth spherical hinge 44. The axial direction of the second piston rod 32 is the horizontal direction, and the second piston rod 32 can move along the axial direction thereof, the second piston rod 32 can pull the connecting rod 33 to move in the moving process of the horizontal direction, the connecting rod 33 can drive the connecting part 312 and the first piston rod 31 to rotate around the axial line of the first piston rod 31 in the moving process, and the pull rod 22 is driven to move, so that the situation that the wheel is subjected to lateral force is simulated.

The utility model discloses a two test assembly 3 both can simulate the vehicle and receive the road conditions that the height fluctuation jolted at the in-process wheel of going, can also simulate the vehicle and turn to the side direction load power that the in-process wheel received, two test assembly 3 both can function alone, it moves and disassembles to turn to the process, carry out many-sided research, also can coordinate the motion and be used for simulating the vehicle in-process that goes, the various gesture of wheel on the space changes, and then according to the stress state of wheel at the in-process of going, accurate test car in-process steering wheel 27 that goes, steering column 26, universal joint, torsion bar 23, the stress condition of spare parts such as moving member 21 and pull rod 22.

In the preferred embodiment shown in fig. 1, the first hydraulic cylinder 311 can drive the first piston rod 31 to move in the vertical direction, and the first hydraulic cylinder 311 can drive the first piston rod 31 to extend and contract in the vertical direction and drive the connecting rod 22 to move. As shown in fig. 1 and fig. 2, the first hydraulic cylinder 311 is fixedly connected to the bracket 1, one end of the first piston rod 31 is located in the first hydraulic cylinder 311, and the connecting portion 312 at the other end is hinged to the pull rod 22 through the second spherical hinge 42. It should be understood that the first piston rod 31 may be replaced by another drive rod, for example, a motor may drive the drive rod to move, and the embodiment of the hydraulic cylinder and the piston rod is not limited.

In the embodiment shown in fig. 1 and 2, the two first piston rods 31 and the first hydraulic cylinder 311 are located below the two tie rods 22. The connecting portion 312 is located on the top of the first piston rod 31 and connected to the pull rod 22 through the second spherical hinge 42, and the first piston rod 31 can drive the pull rod 22 to move through the connecting portion 312 when moving in the vertical direction. It should be understood that, in other embodiments, the two first piston rods 31 and the first hydraulic cylinder 311 may also be disposed above the two tie rods 22, and the connecting portion 312 is disposed at the bottom of the first piston rod 31, so that the first piston rod 31 can also drive the tie rods 22 to move when being driven by the first hydraulic cylinder 311, and simulate the road condition when the wheel is bumpy and bumpy. In addition, one of the first piston rods 31 and the first hydraulic cylinders 311 may be disposed below one of the tie rods 22, the other of the first piston rods 31 and the first hydraulic cylinders 311 may be disposed above the other tie rod 22, and the two first piston rods 31 may drive the two tie rods 22 to move similarly, which is not limited to the specific positions of the two first piston rods 31 as long as the tie rods 22 can be driven to move in the vertical direction to simulate the situation that the wheels are bumped and fluctuated.

In the preferred embodiment shown, the two first piston rods 31 are arranged symmetrically with respect to the two tie rods 22. In the embodiment of fig. 1, the two first piston rods 31 are located below the two tie rods 22 and are symmetrically arranged. It should be understood that the two first piston rods 31 may be disposed above the two pull rods 22 at the same time and symmetrically.

In the preferred embodiment shown in fig. 1, a second hydraulic cylinder 321 is used to drive the second piston rod 32 to move in a telescopic manner in the horizontal direction. In the embodiment of fig. 1 and 2, the second hydraulic cylinder 321 is arranged along the horizontal direction and is fixedly connected to the bracket 1, and one end of the second piston rod 32 is located in the second hydraulic cylinder 321, and the other end is connected to the connecting rod 33 through the fourth spherical hinge 44. It is noted that in the embodiment of fig. 1 and 2, the second piston rod 32 and the moving member 21 extend in parallel. It should be understood that the extending direction of the second piston rod 32 may also be rotated by 90 ° in the horizontal plane so that the extending direction of the second piston rod 32 is perpendicular to the extending direction of the moving member 21, or the extending direction of the second piston rod 32 may be rotated by other angles in the horizontal plane as long as the axial direction of the second piston rod 32 is disposed in the horizontal direction. It should be understood that the second piston rod 32 may also be implemented with other driving rod embodiments, and the driving rod may also be driven by a motor or a cylinder, and is not limited to the hydraulic cylinder and piston rod embodiments.

In addition, in the preferred embodiment of fig. 1 and 2, both the two second piston rods 32 are parallel to the extending direction of the moving member 21, and the two second piston rods 32 are symmetrically disposed with respect to the two tie rods 22. In addition, the two first piston rods 31 are also arranged symmetrically with respect to the two tie rods 22, i.e. the two test modules 3 are arranged symmetrically with respect to the two tie rods 22. It should be understood that the two test assemblies 3 may also be arranged asymmetrically, and the positional relationship of the two test assemblies 3 with respect to the pull rod 22 is not limited. Alternatively, as shown in fig. 1 and 2, the connecting portion 312 extends in a direction perpendicular to the first piston rod 31, and the connecting portion 312 is a U-shaped fork which is formed with a U-shaped opening at an end away from the first piston rod 31, while the second ball hinge 42 is located at the top of the U-shaped fork and the third ball hinge 43 is located in the U-shaped fork. It should be understood that the connecting portion 312 may have other shapes, and is not limited to the shape shown in the embodiment of fig. 1 and 2. The second spherical hinge 42 and the third spherical hinge 43 may be disposed at other positions of the connecting portion 312.

The object 2 includes parts such as an automobile steering wheel 27, a steering column 26, a universal joint, a torsion bar 23, a moving member 21, and a tie rod 22. Wherein, the torsion bar 23 can rotate around the axis thereof and drive the moving member 21 to move along the horizontal direction, the torsion bar 23 is connected to the steering column 26 through a universal joint, the torsion actuator 24 is connected with the steering column 26 and is used for simulating the rotation of the steering wheel 27 of the automobile, and the torsion actuator 24 can drive the steering column 26 and the torsion bar 23 to rotate around the axis thereof during the rotation process. Referring to fig. 1 and 3 specifically, a rack is disposed on the moving member 21, a gear engaged with the rack is disposed at an end of the torsion bar 23 close to the moving member 21, and the moving member 21 can be driven to move in a horizontal direction by the engagement of the gear and the rack during the rotation of the torsion bar 23. The torsion actuator 24 is connected to the steering column 26 and is connected to the end of the torsion bar 23 remote from the moving member 21 by a universal joint, and the torsion actuator 24 rotates to drive the torsion bar 23 to rotate through the steering column 26 and the universal joint.

In addition, in the embodiment of fig. 1 and 3, the outer periphery of the connecting member is further provided with a housing 25, the housing 25 wraps the outer periphery of the connecting member and is connected to the bracket 1, the rack of the moving member 21 is positioned in the housing 25, and the torsion bar 23 can pass through the housing 25 and drive the moving member 21 to move through the meshing of the gear and the rack.

Further, the steering column 26 may be provided with a measuring element such as an integrated torque sensor and encoder, so that the torsional actuator 24 can be controlled to simulate the action of turning the steering wheel 27 according to the information feedback of the measuring element on the steering column 26.

Preferably, a plurality of position sensors or integrated force sensors may be further disposed on the first driving rod, the second driving rod, the connecting rod 33 or the pull rod 22, or a plurality of position sensors or integrated force sensors may be disposed on the first driving rod, the second driving rod, the connecting rod 33 and the pull rod 22 at the same time. The position of the first driving rod and the second driving rod or the received driving force or displacement is sensed, and test data are collected conveniently.

It should be noted that, during the test, a predetermined test action may be set by the system, for example, the displacement of the first piston rod 31 by the first hydraulic cylinder 311 or the acting force of the second piston rod 32 by the second hydraulic cylinder 321 may be set by the system, so as to simulate the steering force or vibration condition applied to the wheels during the driving of the automobile, and detect the acting force applied to the steering column 26.

The utility model discloses a two test assembly 3 both can simulate the vehicle and receive the road conditions that the height fluctuation jolted at the in-process wheel of going, can also simulate the vehicle and turn to the side direction load power that the in-process wheel received, and through first piston rod 31, second piston rod 32, the vehicle in-process of going can also be simulated in the cooperation of connecting rod 33 or pull rod 22, the various gesture changes of wheel on the space, and then according to the wheel at the in-process stress state of going, accurate test car in-process steering wheel 27 of going, steering column 26, universal joint, torsion bar 23, the stress condition of spare parts such as moving member 21 and pull rod 22.

The preferred embodiments of the present invention have been described in detail, but it should be understood that various changes and modifications can be made by those skilled in the art after reading the above teaching of the present invention. Such equivalents are intended to fall within the scope of the claims appended hereto.

Claims

1. A vehicle steering gear testing system, comprising:

a support;

the device comprises a tested part and a support, wherein the tested part comprises a moving part and two pull rods, the moving part extends along the horizontal direction and is connected to the support in a horizontally movable manner, and one ends of the two pull rods are connected to two ends of the moving part through two first spherical hinges respectively;

2. The vehicle steering gear testing system of claim 1, wherein the first drive rod is a first piston rod, the test assembly further comprising a first hydraulic cylinder fixedly connected to the bracket, an end of the first piston rod distal from the connecting portion being located within the first hydraulic cylinder, the first hydraulic cylinder being operable to drive the first piston rod in a vertical direction.

3. The vehicle steering gear testing system of claim 1, wherein the two first drive levers are located above or below the two tie levers, respectively.

4. The vehicle steering gear testing system of claim 1, wherein the two first drive levers are symmetrically disposed with respect to the two tie levers.

5. The vehicle steering gear testing system of claim 1, wherein the second actuator rod is a second piston rod, the testing assembly further comprising a second hydraulic cylinder connected to the bracket, wherein an end of the second piston rod distal from the fourth ball joint is located within the second hydraulic cylinder, and wherein the second hydraulic cylinder is operable to drive the second piston rod to move in a horizontal direction.

6. The vehicle steering gear testing system of claim 1, wherein said two test assemblies are symmetrically disposed with respect to said two tie rods.

7. The vehicle steering gear testing system of claim 1, wherein said connecting portion is a clevis, said second ball joint being located at a top portion of said clevis, and said third ball joint being located within said clevis.

8. The vehicle steering gear testing system of claim 1, wherein the moving member further comprises a rack, and the tested member further comprises:

the torsion rod can rotate around the axis of the torsion rod and is provided with a gear meshed with the rack, and the moving piece can be driven to move by the meshing of the gear and the rack in the rotation process of the torsion rod;

and the steering wheel is connected with the steering column.

9. The vehicle steering gear testing system of claim 8, wherein an integrated torque sensor and encoder are provided on the steering column.

10. The vehicle steering gear testing system according to claim 1, characterized in that the first and/or second drive rod and/or the connecting rod and/or the tie rod are further provided with a plurality of position sensors or integrated force sensors.