Automobile steering system testing device

Abstract

The utility model relates to the technical field of automobile steering testing, in particular to an automobile steering system testing device. Comprising a transverse sliding table and a base which are fixed to a module workbench, a longitudinal sliding block capable of moving front and back is clamped to a sliding plate of the transverse sliding table, a supporting column is installed on the top of the longitudinal sliding block, a vertical sliding table is installed on a column body, and a rotating disc simulation assembly is arranged on the vertical sliding table; two angle seats fixedly connected with a steering engine in an automobile steering system are installed on the base, two load simulators are fixed to the outer sides of the left ends and the right ends of the two angle seat blocks, and a sliding seat capable of being adjusted up and down is fixed to the front end of each angle seat. Parameters such as torque, frequency and angle generated by left and right transverse movement of the steering pull rod are converted into rotation parameters received by the detection motor, and compared with conventional hydraulic detection, the detection is more accurate.

Description

Technical Field

[0001] This utility model relates to the field of automotive steering testing technology, and in particular to an automotive steering system testing device. Background Technology

[0002] With the continuous development of automotive electronic control systems, steering system testing requires the simultaneous acquisition of multi-source heterogeneous data such as steering wheel angle, steering gear output torque, and wheel alignment parameters. Therefore, developing a new type of steering testing device with full-condition adaptability and multi-physical quantity synchronous acquisition function has become a key technical requirement for improving vehicle active safety performance and handling quality.

[0003] Existing testing equipment often uses hydraulic cylinder testing or linear motor testing methods to test parameters such as load and torque of steering tie rods when testing automotive steering systems. However, this testing method has many drawbacks, such as "(1) the hydraulic system has a large noise impact, which is not conducive to the testing of other parameters of new energy vehicles in the laboratory; (2) the linear motor with large power is large in size and expensive; (3) conventional worktables cannot achieve the purpose of rotation testing in multiple directions". Utility Model Content

[0004] In order to overcome the deficiencies in the prior art and achieve the above-mentioned functions, this utility model provides a vehicle steering system testing device.

[0005] This utility model is achieved through the following technical solution:

[0006] A testing device for an automotive steering system includes a transverse slide and a base fixed on a modular workbench. A longitudinal slider capable of moving back and forth is engaged on the slide plate of the transverse slide. A support column is installed on the top of the longitudinal slider, and a vertical slide is installed on the column. A turntable simulation component is provided on the vertical slide. Two corner blocks fixedly connected to the steering gear in the automotive steering system are installed on the base. Two load simulators are fixed on the outer sides of the left and right ends of the two corner block blocks. A slide capable of vertical adjustment is fixed to the front end of each corner block.

[0007] The vehicle steering system includes a steering gear fixed on a slide block. The upper part of the steering gear center is divided into three sections, namely the steering input shaft, the steering intermediate shaft, and the steering output shaft.

[0008] The turntable simulation component includes a locking block extending out of the housing. The locking block can be fixedly connected to the steering input shaft, steering intermediate shaft, and steering output shaft end in the vehicle steering system. The locking block is driven to rotate by the drive motor in the turntable simulation component.

[0009] The load simulator includes a detection motor fixed on the frame and facing downwards. The output shaft of the detection motor is fixedly connected to the force shaft at the bottom via a coupling. A ferrule is fixed on the force shaft and a swing arm block is installed on the ferrule. The swing arm block is movably connected to the ball joint assemblies at both ends of the vehicle steering system.

[0010] Furthermore, the support column is fixedly connected to the longitudinal slider via a rotating slide a, and the turntable simulation component is fixedly connected to the vertical slide via a rotating slide b. Both the rotating slide a and the rotating slide b can be rotated and locked via a handle.

[0011] Furthermore, the turntable simulation component includes a built-in drive motor and a control box a fixed on the drive motor, as well as a torque sensor. One end of the torque sensor is fixedly connected to the output shaft of the drive motor through a bushing a, and the other end is fixedly connected to a locking block located inside the housing through a bushing b.

[0012] Furthermore, the side of the corner block is a right trapezoid with the right angle side located at the front end. Several vertical long slots are provided on the front end surface of the corner block. The slide can be adjusted up and down through the long slots. Each slide is equipped with a fixing block, which is fixedly connected to the through hole on the steering gear to fix the body of the steering gear.

[0013] Furthermore, the swing arm block is fixedly connected to the ferrule, and the swing arm block is provided with a through hole running vertically through it. The ball head rod at the upper end of the ball head assembly extends into the through hole in the swing arm block and the two are fitted with a clearance.

[0014] Both ends of the force-bearing shaft are equipped with bearing seats that are compatible with it.

[0015] Furthermore, when the steering tie rods at both ends move laterally, the ball joint assembly and the swing arm block drive the detection motor to rotate. The detection motor transmits data to the host computer through the control box b installed on its housing.

[0016] The beneficial effects of this utility model are:

[0017] This invention converts the torque, frequency, and angle parameters generated by the lateral movement of the steering tie rod into rotational parameters received by the detection motor, which is more accurate than conventional hydraulic testing. This invention can simulate input torque, frequency, and angle at different shaft positions in the automotive steering system, compare the input and output parameters to determine the optimal adjustment scheme, and simultaneously record damage over a long period. This invention has low manufacturing costs, is extremely convenient to assemble and adjust, and is conducive to large-scale production. The detection noise generated by this invention is also minimal, making it suitable for steering testing in today's new energy vehicles. Attached Figure Description

[0018] Figure 1 This is a three-dimensional view of the vehicle system tested according to this utility model;

[0019] Figure 2 This is a 3D schematic diagram of the load simulator;

[0020] Figure 3 A three-dimensional schematic diagram of the load simulator's interior, viewed from above.

[0021] Figure 4 A schematic diagram of the entire fixed car steering system;

[0022] Figure 5 This is a schematic diagram showing the area to be inspected after the steering input shaft in the car's steering system has been removed.

[0023] Figure 6 This is a schematic diagram showing the area to be inspected after the steering input shaft and steering intermediate shaft of the car steering system have been removed.

[0024] Figure 7 This is a 3D schematic diagram of the load simulator after half-sectioning.

[0025] In the picture:

[0026] 1. Modular worktable; 101. Horizontal slide; 102. Vertical slider; 103. Support column; 104. Vertical slide.

[0027] 2. Rotary slide a, 201. Rotary slide b,

[0028] 3. Turntable simulation assembly, 301. Drive motor, 302. Simulation shaft, 303. Bushing a, 304. Bushing b, 305. Torque sensor, 306. Clamp, 307. Control box a.

[0029] 4. Load simulator, 401. Frame, 402. Detection motor, 403. Bearing housing, 404. Force-bearing shaft, 405. Compression fitting, 406. Swing arm block, 407. Control box b.

[0030] 5. Base, 501. Corner seat, 502. Slide, 503. Fixing block.

[0031] 6. Steering gear, 601. Steering tie rod, 602. Ball joint assembly.

[0032] 7. Automotive steering system, 701. Steering input shaft, 702. Universal joint a, 703. Steering intermediate shaft, 704. Universal joint b, 705. Steering output shaft. Detailed Implementation

[0033] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0034] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0035] In this utility model, those skilled in the art will know that: the automobile steering system 7 is a conventional automobile steering device, as described above. Figure 1 and Figure 7 In a conventional automotive steering system, the steering gear 6 is movably connected to the steering tie rod 601 at both ends. During vehicle operation, the steering gear 6 does not move, meaning it is fixed to the vehicle body. However, due to the screw connection inside, it can move laterally left and right. The steering tie rod 601 and the ball joint assembly 602 serve as the steering actuators.

[0036] Of course, those skilled in the art will also know that: the steering wheel is mounted on the steering input shaft 701, which is movably connected to the steering intermediate shaft 703 via universal joint a. The steering intermediate shaft 703 is in turn movably connected to the steering output shaft 705 via universal joint b 704, and the other end of the steering output shaft 705 mates with the steering gear 6; both the steering input shaft 701 and the steering intermediate shaft 703 are fixed in place by conventional clamps as follows: Figure 1 As shown, this is a conventional technique, and the relevant fixtures will not be described or shown in detail in this article.

[0037] like Figures 1 to 7 As shown, this utility model includes a horizontal slide 101 and a base 5 fixed on a modular workbench 1. The modular workbench 1 facilitates the position adjustment of each component. A longitudinal slider 102 that can move back and forth is engaged on the slide plate of the horizontal slide 101. A support column 103 is installed on the top of the longitudinal slider 102, and a vertical slide 104 is installed on the column. A turntable simulation component 3 is provided on the vertical slide 104. That is, the position of the turntable simulation component 3 can be controlled by the horizontal slide 101, the longitudinal slider 102, and the longitudinal slider 102 to control the specific positions of the x-axis, y-axis, and z-axis, respectively.

[0038] Two corner seats 501 are installed on the base 5 and are fixedly connected to the steering gear 6 in the vehicle steering system 7. Two load simulators 4 are fixed on the outer side of the left and right ends of the two corner seats 501. Each corner seat 501 has a slide seat 502 that can be adjusted up and down at the front end, which is mainly used to fix and adjust the vehicle steering system 7.

[0039] refer to Figure 4 , Figure 5 , Figure 6 The automotive steering system 7 includes a steering gear 6 fixed on a slide block 502. The upper part of the steering gear 6 is divided into three sections: a steering input shaft 701, a steering intermediate shaft 703, and a steering output shaft 705. The turntable simulation component 3 includes a locking block 306 extending out of the housing. The locking block 306 can be fixedly connected to the ends of the steering input shaft 701, steering intermediate shaft 703, and steering output shaft 705 in the automotive steering system 7. Of course, different specifications of shafts require different specifications of locking blocks 306. The connection between the two can be fixed by welding, or bolted connection with holes can be used for easy disassembly. Those in the mechanical manufacturing field are familiar with the connection methods, and this article will not elaborate further. The locking block 306 is driven to rotate by the drive motor 301 in the turntable simulation component 3 to simulate the angle, torque, speed, frequency, and other parameters of manually driven steering wheel rotation.

[0040] By adjusting the direction of the turntable simulation component 3, the output of the drive motor 301 is made to start from the steering input shaft 701, the steering intermediate shaft 703 and the steering output shaft 705 respectively, and the effects of different input torque, input position and other parameters on the final steering output are detected.

[0041] The load simulator 4 includes a detection motor 402 fixed on the frame 401 and facing downwards. The detection motor 402 is used to receive parameters such as torque, speed, angle, and frequency ultimately transmitted by the steering tie rod 601, thereby simulating the load on the wheel. The output shaft of the detection motor 402 is fixedly connected to the force-bearing shaft 404 at the bottom through a coupling. A ferrule 405 is fixed on the force-bearing shaft 404 and a rocker arm block 406 is installed on the ferrule 405. The rocker arm block 406 is movably connected to the ball joint assemblies 602 at both ends of the vehicle steering system 7.

[0042] The support column 103 is fixedly connected to the longitudinal slider 102 via a rotating slide a2, and the turntable simulation component 3 is fixedly connected to the vertical slide 104 via a rotating slide b201. Both the rotating slide a2 and the rotating slide b201 can be rotated and locked via a handle. That is, the turntable simulation component 3 can be adjusted in orientation angle via the rotating slide a2 and the rotating slide b201 to adapt to different situations.

[0043] The turntable simulation component 3 includes a built-in drive motor 301 and a control box a307 fixed on the drive motor 301. It also includes a torque sensor 305. One end of the torque sensor 305 is fixedly connected to the output shaft of the drive motor 301 through a bushing a303, and the other end is fixedly connected to a locking block 306 located in the housing through a bushing b304.

[0044] The side of the corner seat 501 is a right trapezoid with the right angle side located at the front end. Several vertical long slots are provided on the front end surface of the corner seat 501. The slide seat 502 can be adjusted up and down through the long slots. Each slide seat 502 is equipped with a fixing block 503. The fixing block 503 is fixedly connected to the through hole on the steering gear 6 to fix the body of the steering gear 6.

[0045] The swing arm block 406 is fixedly connected to the sleeve 405. The swing arm block 406 is provided with a through hole that runs vertically through it. The ball head rod at the upper end of the ball head assembly 602 extends into the through hole in the swing arm block 406 and the two are fitted with a clearance. When the steering tie rod 601 moves left and right to the most extreme position, it is inevitable that it will move forward and backward. At this time, the ball head assembly 602 plays the role of limiting the movement.

[0046] Both the upper and lower ends of the force-bearing shaft 404 are equipped with bearing seats 403 that are compatible with it.

[0047] When the steering tie rods 601 at both ends move laterally, the ball joint assembly 602 and the swing arm block 406 drive the detection motor 402 to rotate. The detection motor 402 transmits relevant data to the host computer through the control box b407 installed on its housing.

[0048] The host computer can control the output torque of the detection motor 402, and apply torque to the steering tie rods 601 at both ends of the steering gear 6 by the swing arm block 406. The torque can simulate various function waveforms or road spectrum data.

[0049] For the steering system under test without a steering column 7, the steering gear 6 can also be driven by directly connecting the steering output shaft 705 to the turntable simulation component 3.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. A testing device for an automotive steering system, characterized in that: The system includes a horizontal slide (101) and a base (5) fixed on the module workbench (1). A longitudinal slider (102) that can move back and forth is snapped onto the slide plate of the horizontal slide (101). A support column (103) is installed on the top of the longitudinal slider (102) and a vertical slide (104) is installed on the column. A turntable simulation component (3) is set on the vertical slide (104). Two corner seats (501) that are fixedly connected to the steering gear (6) in the vehicle steering system (7) are installed on the base (5). Two load simulators (4) are fixed on the outer side of the left and right ends of the two corner seats (501). A slide (502) that can be adjusted up and down is fixed at the front end of each corner seat (501). The vehicle steering system (7) includes a steering gear (6) fixed on a slide (502). The upper part of the center of the steering gear (6) is divided into three sections, namely the steering input shaft (701), the steering intermediate shaft (703), and the steering output shaft (705). The turntable simulation component (3) includes a locking block (306) extending out of the housing. The locking block (306) can be fixedly connected to the end of the steering input shaft (701), steering intermediate shaft (703) and steering output shaft (705) in the vehicle steering system (7). The locking block (306) is driven to rotate by the drive motor (301) in the turntable simulation component (3). The load simulator (4) includes a detection motor (402) fixed on the frame (401) and facing downward. The output shaft of the detection motor (402) is fixedly connected to the force shaft (404) at the bottom through a coupling. A sleeve (405) is fixed on the force shaft (404) and a swing arm block (406) is installed on the sleeve (405). The swing arm block (406) is movably connected to the ball joint assembly (602) at both ends of the vehicle steering system (7).

2. The automotive steering system testing device according to claim 1, characterized in that: The support column (103) is fixedly connected to the longitudinal slider (102) via the rotary slide a (2), and the turntable simulation component (3) is fixedly connected to the vertical slide (104) via the rotary slide b (201). Both the rotary slide a (2) and the rotary slide b (201) can be rotated and locked via the handle.

3. The automotive steering system testing device according to claim 1, characterized in that: The turntable simulation component (3) includes a built-in drive motor (301) and a control box a (307) fixed on the drive motor (301). It also includes a torque sensor (305). One end of the torque sensor (305) is fixedly connected to the output shaft of the drive motor (301) through a bushing a (303), and the other end is fixedly connected to a locking block (306) located in the housing through a bushing b (304).

4. The automotive steering system testing device according to claim 1, characterized in that: The side of the corner seat (501) is a right trapezoid with the right angle side located at the front end. Several vertical long slots are provided on the front end surface of the corner seat (501). The slide (502) can be adjusted up and down through the long slots. Each slide (502) is equipped with a fixing block (503). The fixing block (503) is fixedly connected to the through hole on the steering gear (6) to fix the body of the steering gear (6).

5. The automotive steering system testing device according to claim 1, characterized in that: The swing arm block (406) is fixedly connected to the sleeve (405). The swing arm block (406) is provided with a through hole that runs vertically through it. The ball head rod at the upper end of the ball head assembly (602) extends into the through hole in the swing arm block (406) and the two are fitted with a clearance. Both ends of the force-bearing shaft (404) are equipped with bearing seats (403) that are compatible with it.

6. The automotive steering system testing device according to claim 5, characterized in that: When the steering tie rods (601) at both ends move laterally, the ball joint assembly (602) and the swing arm block (406) drive the detection motor (402) to rotate. The detection motor (402) transmits data to the host computer through the control box b (407) installed on its housing.

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