Frame torsional fatigue test bench with loading device

A technology of torsional fatigue and test bench, which is applied in the direction of measuring device, vehicle test, machine/structural component test, etc. It can solve the problems of unsatisfactory frame assembly reliability, complex stress situation, accurate evaluation, etc., and achieve The effect of solving the difficulty of durability test evaluation and novel equipment structure

CN106468622BActive Publication Date: 2019-05-21SHAANXI HEAVY DUTY AUTOMOBILE
8 Cites 1 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2019-05-21

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention provides a frame torsional fatigue test bench with a loading device, and belongs to a test bench for automobile part assemblies. The frame torsional fatigue test bench comprises a portal frame, two actuators, a torsion beam and the like, and is characterized in that a front simulated suspension, a rear simulated suspension, a subframe and a frame are installed according to the state of an actual automobile; the upper end of the loading device is installed on the subframe to load, the lower end of the loading device is connected to jacks and spiral springs, the spiral springs can generate bidirectional displacement deformation along with movements of the frame, and follow-up movements of the loading device and a connection part of the frame are ensured; and the jacks are connected with the loading device through a lever so as to transfer a load carrying force, and the torsion beam and the spiral springs are fixed. The frame torsional fatigue test bench can comprehensively evaluate the torsional reliability of a frame assembly, actual working conditions are simulated through the bench device, and a follow-up constraint problem between the frame and a finished automobile mass loading unit is solved by the simulated loading device, thereby enabling the conclusion of a frame torsional fatigue test to have more reference values. The frame torsional fatigue test bench is novel in structure and effectively solves a problem of difficult evaluation for a durability test in development of a heavy commercial vehicle frame assembly.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention belongs to a test stand for an assembly of auto parts, in particular to a frame torsion fatigue test stand with a loading device. Background technique

[0002] The frame is a key component of a car, and its quality and performance directly affect the safety, ride comfort and comfort of the vehicle. Although modern design methods, such as CAD, optimal design, finite element analysis, etc., can evaluate the design quality of the frame at an early stage, due to the large size of the frame structure and the complexity of the force, the results of theoretical design and calculation are not consistent with the actual situation. Certain differences still need to be continuously corrected and improved through later bench tests. The frame torsional fatigue test is a non-standard test. At present, domestic testing institutions can only conduct no-load torsion tests on the frame assembly. The stress state of the sample is quite different from the w...

Examples

Embodiment Construction

[0023] The present invention will be further described below in conjunction with accompanying drawing:

[0024] Such as figure 1 As shown, among them: 1. Gantry frame; 2. Actuator; 3. Torsion beam; 4. Front simulated suspension; 5. Rear simulated suspension; 6. Rotation center support; 7. Rear suspension support; 8. Loading device; 9. Jack; 10. Coil spring; 11. Longitudinal stabilization mechanism of frame; 12. Frame assembly; 13. Sub-frame;

[0025] Frame fatigue torsion mechanism includes gantry 1, actuator 2, torsion beam 3, front simulated suspension 4, rear simulated suspension 5, rotation center support 6, rear suspension support 7, loading device 8, jack 9. Coil spring 10, vehicle frame longitudinal stabilization mechanism 11, vehicle frame assembly 12, sub-frame 13.

[0026] Two actuators 2 are fixed on the top of the gantry frame 1, the lower ball joints of the actuators 2 are connected to the torsion beam 3, the front suspension of the frame assembly 12 is fixed on...