Multi-degree-of-freedom wire harness fatigue test equipment and fatigue test method thereof

Abstract

The invention discloses multi-degree-of-freedom wire harness fatigue test equipment and a fatigue test method thereof. Existing dynamic wire harness applicability and service life simulation analysisthat multiple single-degree-of-freedom are simulated and then accumulated, and a test result is greatly different from a multi-degree-of-freedom automatic combination condition. A cable height detection mechanism comprises an infrared emitter and an infrared receiver, the infrared emitter and the infrared receiver are respectively driven by a vertical moving linear module to move up and down, andsupporting seats of the two vertical moving linear modules and two longitudinal guide rails respectively form sliding pairs; the transverse moving mechanism is driven by the vertical moving mechanismto move up and down; the longitudinal moving mechanism and the transverse moving mechanism are each provided with an angle adjusting assembly. In each angle adjusting assembly, a deflection mechanismis arranged at the top of a side rolling mechanism, and a nodding mechanism is arranged at the top of the deflection mechanism; a test piece mounting plate is arranged on the nodding mechanism of eachangle adjusting assembly, and a plurality of anti-collision sensing devices are arranged on the test piece mounting plates. Whether the length of the wire harness meets the actual use requirement ornot can be verified, and a fatigue test is conducted.

Description

technical field [0001] The invention belongs to the application fields of industry, rail transit and new energy, and specifically relates to a multi-degree-of-freedom wire harness fatigue test device and a fatigue test method thereof. Background technique [0002] The current dynamic wire harness applicability and life simulation analysis and verification methods mainly include the following two methods: 1. Theoretical calculation and simulation, using design software or simulation software for measurement and simulation analysis of motion parameters; 2. Multiple single-degree-of-freedom simulations Continuous accumulative test verification, through the combination of certain tooling and structure, physical simulation analysis is carried out according to the motion parameters; the first one above is to calculate and simulate based on theoretical data, the applicability is different from the actual situation, and the simulation analysis of life requires a lot of foundation Da...

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Problems solved by technology

[0002] The current dynamic wire harness applicability and life simulation analysis and verification methods mainly include the following two methods: 1. Theoretical calculation and simulation, using design software or simulation software for measurement and simulation analysis of motion parameters; 2. Multiple single-degree-of-freedom simulations Continuous accumulative test verification, through the combination of certain tooling and structure, physical simulation analysis is carried out according to the motion parameters; the first one above is to calculate and simulate based on theoretical data, the applicability is different from the actual situation, and the simulation analysis of life requires a lot of foundation Data accumulation can be used for a theoretical calculation, which is not suitable for the actual situation and affects the design redundancy, and is not suitable for the verification of product life; the second is to accumulate multiple single-degree-of-freedom simulations, and the test results are automatically combined with the multi-degree-of-freedom The data under the condition will be quite different. The requirements under the multi-degree-of-freedom comprehensive condition and the single-degree-of-freedom continuous accumulation condition are much stricter, and for non-automatically controlled equipment, each movement trajectory is related to the setting. Potential for poor consistency and therefore not suitable for conformance movements in multiple directions of motion

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