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A real vehicle simulation vibration test bench for transmission shafts of different specifications

A vibration test bench, real vehicle simulation technology, applied in machine gear/transmission mechanism testing, mechanical component testing, machine/structural component testing, etc. Insufficient consideration of performance, lack of overload protection devices, etc.

Inactive Publication Date: 2018-11-27
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 1. There are mostly test benches for measuring a transmission shaft, and few test benches can provide the measurement of transmission shaft assembly;
[0007] 2. Most of the transmission shaft vibration test benches have a single test variable, and rarely can provide vibration measurements at different angles, different speeds, and torques;
[0008] 3. Most transmission shaft vibration test benches lack overload protection devices, and do not consider safety and comprehensiveness well
[0009] 4. Most transmission shaft vibration test benches only measure the vibration by simply rotating the transmission shaft, ignoring the simulation of actual working conditions;
[0010] 5. Most drive shaft vibration test benches cannot make corresponding simulation tests according to vehicle parameters and road conditions

Method used

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  • A real vehicle simulation vibration test bench for transmission shafts of different specifications
  • A real vehicle simulation vibration test bench for transmission shafts of different specifications
  • A real vehicle simulation vibration test bench for transmission shafts of different specifications

Examples

Experimental program
Comparison scheme
Effect test

test approach 1

[0063] Test scheme 1: For trucks where the transmission output shaft and the main reducer input shaft are far away, the transmission shaft is often divided into two sections and an intermediate support is added for power transmission. The vibration test bench of the present invention can measure this kind of Two-stage transmission shaft assembly, and corresponding simulation tests can be made according to different model parameters and road conditions, and the equivalent angle of the transmission shaft can be quickly adjusted.

[0064] The specific test process of test scheme 1 includes: preliminary preparation work, installation process of drive shaft assembly 8, technical solution to adapt to large-scale drive shaft assembly 8, process of changing the equivalent angle of drive shaft 804, vibration test process, test bench rapid The braking process and the end of the test work.

[0065] Preliminary preparations for test plan 1:

[0066] Select the transmission shaft assembly...

test approach 2

[0080] Test plan 2: There are more short-wheelbase cars like cars on the market, and a single-segment drive shaft is often arranged for power transmission. Therefore, in order to detect such a drive shaft, the present invention provides a test plan for measuring a single-segment drive shaft. It can also measure the vibration of the transmission shaft at different speeds, different gears, different equivalent angles, and different working conditions.

[0081] The specific test process of the second test plan is as follows: the single-stage drive shaft assembly selected in this test plan is equivalent to the two-stage drive shaft assembly 8, which only retains the second universal joint 803, the drive shaft 804 and the third universal joint 805. In the second test plan, except that the installation form of the drive shaft 804 on the test bench is different from the test plan one, the preparatory work, the process of changing the equivalent angle of the drive shaft 804, the vibra...

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Abstract

The invention relates to an actual-vehicle-simulated vibration test-bed for transmission shafts with different specifications and belongs to the actual-vehicle-simulated vibration test-bed for the transmission shafts with different specifications. A first rack and a second rack are fixed on the foundation of a test room side by side, the second rack is located at the right side of the first rack, a power output system is arranged on the first rack, a vibration excitation device is arranged on the first rack at the right side of a power output device, a safety braking system is arranged above the vibration excitation device, the left end of the safety braking system is connected with the power output system, the right end is fixedly connected with a first right end fixing cover of the first rack, a supporting system is arranged on the second rack, and a loading device is mounted at the tail end of the supporting system. The test-bed has the advantages that the measurement on the vibration of a transmission shaft assembly is realized, and the defect that most of traditional vehicle transmission shaft vibration test-beds cannot sufficiently perform corresponding simulation tests according to different vehicle model parameters and road conditions and cannot quickly adjust angles of the transmission shafts is overcome.

Description

technical field [0001] The invention belongs to a real vehicle simulation vibration test bench for transmission shafts of different specifications. Background technique [0002] With the rapid development of automobile technology, the comfort of the cab has been paid more and more attention by manufacturers. The automobile is a complex multi-degree-of-freedom vibration system composed of multiple vibration systems. For the power transmission system of the automobile, the vibration mainly comes from the bending vibration and torsional vibration of the shaft parts. The transmission shaft is the main transmission part of the automobile power transmission system, and its vibration has a great influence on the vibration of the whole vehicle. In recent years, major automobile manufacturers have frequently recalled vehicles due to drive shaft problems. In 2010, BMW, Germany, because of defects in the production process of the front drive shaft, caused noise and vibration when the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M13/02
CPCG01M13/028
Inventor 曲兴田周伟闫冠宇李雪娇毕春利魏朋飞吴江董传福张萌张昆
Owner JILIN UNIV
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