Automobile rear steering gear testing device

Abstract

The utility model relates to the technical field of automobile part testing, and provides an automobile rear steering gear testing device which comprises a platform. The first tester is connected with the end part of the steering gear and is used for simulating a load and detecting the axial tension and pressure of the steering gear; the second tester is in transmission connection with an internal gear of the steering gear and is used for providing rotation driving and detecting torque; the actual working condition of the rear wheel steering gear is simulated through the first tester and the second tester which are arranged on the platform, required system performance indexes such as the load, the response, the rotation angle and the rotation speed of the rear wheel steering gear are directly tested, and the simulation test requirements of the actual use working condition of the rear wheel steering gear are met.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile component testing, in particular to an automobile rear steering gear testing device. Background Art

[0002] The rear-wheel steering gear of a car is an auxiliary system that can steer the rear wheels of the vehicle according to the vehicle speed and steering angle, thereby improving the turning flexibility and stability of the vehicle. Unlike the traditional front-wheel steering gear, the rear-wheel steering gear can make the rear wheels steer in the opposite direction of the front wheels when the vehicle turns at low speed, thereby improving the turning radius and reliability. When driving at high speed, the rear-wheel steering gear can make the rear wheels steer in the same direction as the front wheels, thereby improving the stability and handling of the vehicle. At present, the existing steering gear test equipment is developed for the front-wheel steering gear. Due to the inconsistency of the front and rear wheel working conditions, the load, torque, response, turning angle and speed simulation of the actual working conditions will result in a large gap between the actual and the actual conditions, and it is impossible to accurately simulate the actual working conditions of the rear-wheel steering of the car. Utility Model Content

[0003] The utility model aims to provide a vehicle rear steering gear test device to solve the above technical problems and meet the simulation test requirements of the actual use conditions of the rear wheel steering gear.

[0004] The embodiment of the utility model is realized through the following technical scheme: a vehicle rear steering gear test device, comprising a platform, on which is provided a bracket for mounting the steering gear, a first tester connected to the end of the steering gear for simulating load and detecting the axial tension and pressure of the steering gear, and a second tester connected to the internal gear transmission of the steering gear for providing rotational drive and detecting torque.

[0005] Furthermore, the second tester includes a motor, a torque sensor and a transmission shaft. One end of the torque sensor is coaxially connected to the output end of the motor, and the other end of the torque sensor is connected to the transmission shaft through a belt. One end of the transmission shaft is coaxially fixed to the internal gear of the steering gear, and the other end of the transmission shaft is rotatably and slidably connected to a bearing seat.

[0006] Furthermore, the first tester includes an electric cylinder and a tension and pressure sensor, one end of the tension and pressure sensor is coaxially connected to the electric cylinder, and the other end of the tension and pressure sensor is connected to the steering gear end yoke through a stud.

[0007] Furthermore, the platform is provided with a plurality of spare holes for adapting to different steering gears to install the bracket, the first tester and the second tester.

[0008] Furthermore, the first tester is respectively arranged at two ends of the steering gear.

[0009] The utility model has at least the following advantages and beneficial effects: by simulating the actual working condition of the rear-wheel steering gear through the first tester and the second tester arranged on the platform, the required system performance indicators such as the load, response, steering angle and rotation speed of the rear-wheel steering gear can be directly tested, thereby meeting the simulation test requirements of the actual use condition of the rear-wheel steering gear. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0011] Figure 1 A structural schematic diagram of a vehicle rear steering gear test device provided by the utility model;

[0012] Figure 2 A top view of a vehicle rear steering gear test device provided by the utility model;

[0013] Icons: 1-steering gear, 2-platform, 20-spare hole, 3-bracket, 4-first tester, 41-electric cylinder, 42-tension and pressure sensor, 5-second tester, 51-motor, 52-torque sensor, 53-drive shaft, 54-bearing seat. DETAILED DESCRIPTION

[0014] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0015] 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 present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0016] Example

[0017] like Figure 1-2As shown, in this embodiment, a vehicle rear steering gear test device is mainly disclosed, and its main structure includes a platform 2, a first tester 4 and a second tester 5, and the first tester 4 and the second tester 5 are both fixed on the platform 2; a bracket 3 is used to install the steering gear 1, so that the steering gear 1 is fixed horizontally on the platform 2; the first tester 4 is used to simulate the load and detect the axial tension and pressure of the steering gear 1, and is connected to the end of the steering gear 1; the second tester 5 is used to provide rotational drive and detect torque, and is directly connected to the internal gear transmission of the steering gear 1; specifically, the first tester 4 is respectively arranged at both ends of the steering gear 1; it should be noted that the steering gear 1 adopts the rear The rear-wheel steering gear 1 can achieve small left and right movements through the coordination of gears and racks. The second tester 5 replaces the internal driving motor 51 of the steering gear 1 and is directly connected to the internal gear transmission of the steering gear 1 to directly provide rotational driving force and detect the real-time driving torque output by it. The transmission realizes the lateral left and right movement of the end yoke of the steering gear 1. The first tester 4 can simulate the actual load condition and monitor the tension and pressure data in real time, which meets the actual use condition of the rear-wheel steering gear 1 and directly tests the required system performance indicators such as load, response, steering angle and speed of the rear-wheel steering gear 1. For this purpose, the corresponding experimental program can be matched so that the experimental bench can quickly and accurately complete the test objectives.

[0018] Furthermore, in a specific implementation, the second tester 5 provided in the embodiment of the utility model includes a motor 51, a torque sensor 52 and a transmission shaft 53, one end of the torque sensor 52 is coaxially connected to the output end of the motor 51, the other end of the torque sensor 52 is transmission-connected to the transmission shaft 53 through a belt, one end of the transmission shaft 53 is coaxially fixed to the internal gear of the steering gear 1, and the other end of the transmission shaft 53 is rotationally and slidably connected to a bearing seat 54; specifically, the motor 51 is connected to the platform 2 by bolts using a motor 51 mounting frame, and the torsion sensor is also connected to the platform 2 by bolts using a mounting frame, and the torsion sensor The end is connected to the transmission shaft 53 through a belt pulley in a tensioning transmission manner; the motor 51 is directly connected to the internal mechanical structure of the steering gear 1, and the output torque and speed can be controlled, as well as the operating conditions of the internal mechanical structure of the steering gear 1 under different working conditions or different electronic control programs; at the same time, the adaptation of various types of motors 51 to the steering gear 1 can be simulated, and by adjusting the motor 51 with different powers, torques, and speeds to test the internal mechanical structure of the steering gear 1, the matching data of the motor 51 that best suits the current steering structure and the design goals of the entire steering gear 1 can be obtained, which greatly facilitates the selection of the motor 51 for the steering gear 1 itself.

[0019] Furthermore, in a specific implementation, the above-mentioned first tester 4 provided in the embodiment of the utility model includes an electric cylinder 41 and a tension and pressure sensor 42, one end of the tension and pressure sensor 42 is coaxially connected to the electric cylinder 41, and the other end of the tension and pressure sensor 42 is connected to the end yoke of the steering gear 1 through a double-headed stud; specifically, the electric cylinder 41 is connected to the platform 2 by bolts using a mounting frame, and the tension and pressure sensor 42 adopts the existing technology and is connected between the output end of the electric cylinder 41 and the end of the steering gear 1; the structural strength of the overload of the entire steering gear 1 system can be tested, including the internal driving motor 51 of the steering gear 1, the design redundancy of the mechanical structure under overload conditions, and the failure condition of the steering gear 1 driving motor 51 and the failure condition of the steering gear 1 mechanical structure can be obtained.

[0020] Furthermore, in a specific implementation, a plurality of spare holes 20 for adapting different steering gears 1 to install the bracket 3, the first tester 4 and the second tester 5 are opened on the above-mentioned platform 2 provided in the embodiment of the utility model. By adjusting the positions of the bracket 3, the first tester 4 and the second tester 5, it can be suitable for testing steering gears 1 of different models, thereby improving the flexibility and practicality of the device.

[0021] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A vehicle rear steering gear test device, characterized in that: The invention comprises a platform (2), on which a bracket (3) for mounting a steering gear (1) is provided, a first tester (4) connected to the end of the steering gear (1) for simulating load and detecting the axial tension and pressure of the steering gear (1), and a second tester (5) connected to the internal gear transmission of the steering gear (1) for providing rotational drive and detecting torque.

2. A vehicle rear steering gear test device as claimed in claim 1, characterized in that: The second tester (5) comprises a motor (51), a torque sensor (52) and a transmission shaft (53); one end of the torque sensor (52) is coaxially connected to the output end of the motor (51); the other end of the torque sensor (52) is transmission-connected to the transmission shaft (53) via a belt; one end of the transmission shaft (53) is coaxially fixed to an internal gear of the steering gear (1); the other end of the transmission shaft (53) is rotationally and slidably connected to a bearing seat (54).

3. The vehicle rear steering gear test device according to claim 1, characterized in that: The first tester (4) comprises an electric cylinder (41) and a tension and pressure sensor (42), one end of the tension and pressure sensor (42) is coaxially connected to the electric cylinder (41), and the other end of the tension and pressure sensor (42) is connected to the end yoke of the steering gear (1) via a stud.

4. A vehicle rear steering gear test device as claimed in claim 1, characterized in that: The platform (2) is provided with a plurality of spare holes (20) for adapting to different diverters (1) to install the bracket (3), the first tester (4) and the second tester (5).

5. The vehicle rear steering gear test device according to claim 1, characterized in that: The first tester (4) is respectively arranged at two ends of the diverter (1).

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