CN104048823B - Variation rigidity virtual automobile body clamp suspension testing stand - Google Patents

Abstract

The invention relates to a suspension test bench with a variable stiffness virtual body fixture. A sliding guide column and an excitation table are installed at both ends of a T-shaped groove bottom plate. The virtual body components are installed on the sliding guide column through the sliding bearing seat; the lower end of the variable stiffness virtual body is fixedly connected with the suspension and wheel components, and the side is connected with the U-shaped groove angle adjustment frame for adjustable angle, and the U-shaped groove angle adjustment frame Connect the spring with the spring pressing plate. The vibration of the simulated road surface is output by the excitation table, the suspension is deformed, and the virtual body is deformed. At the same time, the virtual body components float up and down along the sliding guide column. The invention can meet the simulated working condition test of independent suspensions such as MacPherson suspension system, and can meet the actual working condition test and the pseudo-dynamic working condition test by cooperating with different loading systems. It is suitable for the preliminary development test of the suspension system. After the stiffness of the body is determined, the matching test of the suspension and the body and the matching test of the shock absorber and the spring can be realized.

Description

Suspension Test Bench with Variable Stiffness Virtual Body Fixture

technical field

The invention relates to a quarter suspension test bench of an automobile, in particular to a suspension test bench considering the rigidity of the vehicle body and the movement of the sprung mass.

Background technique

In order to increase the speed of product development and realize the simultaneous development of parts factories and OEMs, it is necessary to effectively improve the test level of parts. Most of the existing suspension test benches focus on the internal test of the suspension system. In terms of design, the influence of the body movement and body stiffness on the suspension performance during the actual vehicle test is ignored, and the connection points of the suspension are rigidly fixed to the bottom plate of the test bench. This is not consistent with the real situation in the process of using the suspension, thus causing the error of the suspension test. In order to solve this contradiction, it is necessary to design a suspension test bench that can truly simulate the force of the suspension during use. The fixtures used in the test bench take into account the stiffness of the body and the movement of the sprung mass.

Contents of the invention

The object of the present invention is to aim at the defects of the existing suspension test bench, and provide a suspension test bench with variable stiffness virtual body fixtures capable of simulating the stiffness of the vehicle body and the motion of the sprung mass. It can be floated to make the suspension bench test more reasonable to simulate the actual vehicle road test.

The technical scheme adopted by the present invention to solve the above-mentioned technical problems is: a suspension test bench with a variable stiffness virtual body fixture, including a T-shaped groove bottom plate, a sliding guide column, a sliding bearing and a sliding bearing seat, a virtual body component, a suspension and a wheel Components and vibration table, which are characterized in that: the sliding guide column and the vibration table are installed at both ends of the T-slot bottom plate, and the adjustable distance is connected between the sliding guide column and the vibration table and the T-slot bottom plate, and the suspension and The wheel assembly is placed on the excitation table and connected with the virtual body assembly. The virtual body assembly is installed on the sliding guide column through a sliding bearing and a sliding bearing seat; the virtual body assembly includes a connecting support plate, a spring pressure plate, a spring, a U-shaped Slot angle adjustment frame, variable stiffness virtual body, control arm connectors, the lower end of variable stiffness virtual body is fixedly connected to the suspension and wheel components, the side is connected to the U-shaped groove angle adjustment frame for adjustable angle, and the U-shaped groove angle adjustment frame is connected to the spring The spring is connected between the pressure plates, the rear end surface of the spring pressure plate is connected to the connecting support plate in an adjustable vertical position, the connecting support plate is fixedly connected to the sliding bearing and the sliding bearing seat, and the vertical position of the lower end side of the connecting support plate is adjustable to connect to the control arm connector. The control arm linkage is connected to the suspension and wheel assembly.

The upper and lower ends of the side of the connecting support plate are respectively provided with vertical T-shaped slots for adjusting the vertical positions of the spring pressure plate and the connecting piece of the control arm. The lower end of the connecting support plate is connected with the counterweight through bolts and nuts.

The beneficial effects that the present invention has are:

The invention integrates multiple functions into one. By simulating different levels of body stiffness, the suspension bench test is more in line with the actual vehicle road test results. The suspension test bench applying the present invention is suitable for performance tests of independent suspensions such as multi-link suspension systems and MacPherson suspension systems; Condition test and pseudo-dynamic condition test. This test bench is suitable for the preliminary development test of the suspension system. After the stiffness of the body is determined, the matching test of the suspension and the body and the matching test of the shock absorber and the spring can be realized.

Description of drawings

Fig. 1 is the structural representation of automobile quarter suspension test stand of the present invention.

detailed description

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

As shown in Figure 1, a kind of variable stiffness virtual body fixture suspension test bench includes T-shaped groove bottom plate 1, sliding guide column 2, sliding bearing and sliding bearing seat 3, virtual body assembly, suspension and wheel assembly 9, excitation Shaker 11.

1) Install the sliding guide column 2 and the vibration excitation table 11 on both ends of the T-shaped groove bottom plate 1, fix them with T-shaped bolts, and adjust the suspension and wheel assembly 9 by changing the distance between the sliding guide column 2 and the vibration excitation table 11 installation size. The suspension and wheel assembly 9 are placed on the vibration table 11 and connected with the virtual body assembly. The virtual body assembly is installed on the sliding guide column 2 through the sliding bearing and the sliding bearing seat 3 .

2) The virtual body assembly includes a connecting support plate 4, a spring pressure plate 5, a spring 6, a U-shaped groove angle adjustment frame 7, a variable stiffness virtual body 8, a control arm connector 10 and a counterweight. The lower end of the variable stiffness virtual body 8 is fixed to the suspension and the wheel assembly 9, and the side is connected to the U-shaped groove angle adjustment frame 7 through screws and nuts, and the installation angle adjustment between the variable stiffness virtual body 8 and the U-shaped groove angle adjustment frame 7 is changed. The installation angle of suspension and wheel assembly 9;

3) The spring 6 is connected between the spring pressure plate 5 and the U-shaped groove angle adjustment frame 7 . The rear end surface of the spring pressure plate 5 is connected to the connecting support plate 4 with an adjustable vertical position, the connecting support plate 4 is fixedly connected to the sliding bearing and the sliding bearing seat 3, and the vertical position of the lower end side of the connecting supporting plate 4 is adjustable to connect with the control arm connector 10, The control arm connector 10 is connected with the suspension and wheel assembly 9 .

4) The upper and lower ends of the connecting support plate 4 are provided with vertical T-shaped grooves, and the installation position of the suspension and wheel assembly 9 can be adjusted by changing the vertical position of the control arm connector 10 and the vertical position of the spring pressure plate 5 .

5) The lower end of the connecting support plate 4 is provided with a bolt and nut structure for installing counterweights. By installing counterweights of different masses and changing the stiffness of variable-stiffness virtual vehicle body 8, different vehicle bodies can be simulated.

During the test, the vibration of the simulated road surface is output by the excitation table, the suspension is excited and deformed, and at the same time, the excitation is transmitted to the virtual body, the virtual body deforms, and the virtual body components float up and down along the sliding guide column. The weighted acceleration signals of the virtual body components and the displacement signals of the variable stiffness virtual body 8 and the vibration table 11 are collected.

Claims (3)

1. a variation rigidity virtual automobile body clamp suspension testing stand, including T-slot base plate (1), slide-and-guide post (2), sliding bearing and plain bearing housing (3), virtual body component, suspension and vehicle wheel component (9), actuating vibration table (11), its characteristic is: described slide-and-guide post (2) and actuating vibration table (11) are installed on the two ends of T-slot base plate (1), and adjustable distance is connected between slide-and-guide post (2) and actuating vibration table (11) with T-slot base plate (1), suspension and vehicle wheel component (9) are placed on actuating vibration table (11), and be connected with virtual body component, virtual body component is installed on slide-and-guide post (2) by sliding bearing and plain bearing housing (3)；Virtual body component includes connecting gripper shoe (4), spring bearer plate (5), spring (6), U-type groove angular adjustment frame (7), the virtual vehicle body of variation rigidity (8), control arm connector (10), variation rigidity virtual vehicle body (8) lower end is fixing with suspension and vehicle wheel component (9) to be connected, side is connected with U-type groove angular adjustment frame (7) angle adjustable, spring (6) it is connected between U-type groove angular adjustment frame (7) with spring bearer plate (5), spring bearer plate (5) rear end face be connected the adjustable connection in gripper shoe (4) vertical position, connection gripper shoe (4) is fixing with sliding bearing and plain bearing housing (3) to be connected, connect the adjustable connection in gripper shoe (4) lower end side vertical position control arm connector (10), control arm connector (10) is connected with suspension and vehicle wheel component (9).

Variation rigidity the most according to claim 1 virtual automobile body clamp suspension testing stand, it is characterised in that: described connection gripper shoe (4) side upper and lower end is respectively provided with regulation spring bearer plate (5) and the vertical T-slot of control arm connector (10) vertical position.

Variation rigidity the most according to claim 1 virtual automobile body clamp suspension testing stand, it is characterised in that: described connection gripper shoe (4) lower end connects balancing weight by bolt and nut.