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Electric loading multifunctional test bench for power-dividing hydraulic mechanical composite transmission system and application thereof

A multi-functional testing and hydraulic transmission technology, which is applied in the testing of mechanical components, testing of machine/structural components, measuring devices, etc., can solve the problems of hydraulic transmission unit and mechanical transmission unit not matching the design, product development uncertainty, Problems such as consuming manpower and material resources, to achieve the effect of expanding the scope of testing, improving testing capabilities, and saving costs

Active Publication Date: 2019-06-14
SHANDONG UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the design and development of hydraulic-mechanical continuously variable transmissions and performance tests are carried out on special test benches or devices after the trial production of the products is completed, and through a series of tests, the hydraulic transmission units and mechanical transmission units of the trial products are often It is not the best design matching solution, and there may even be re-trial products, which leads to relatively high cost and long cycle of product design and development, and consumes a lot of manpower and material resources
Although the current development of computer simulation and virtual prototype technology has greatly shortened the product design cycle and cost, the inconsistency between the simulation conditions and the real working conditions will also lead to uncertainty in product development

Method used

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  • Electric loading multifunctional test bench for power-dividing hydraulic mechanical composite transmission system and application thereof
  • Electric loading multifunctional test bench for power-dividing hydraulic mechanical composite transmission system and application thereof
  • Electric loading multifunctional test bench for power-dividing hydraulic mechanical composite transmission system and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Such as Figure 1 to Figure 2 As shown, this embodiment provides a power-split hydraulic-mechanical compound transmission system electric loading multifunctional test bench, the test bench mainly includes two major aspects of the mechanical part and the control part:

[0048] The mechanical part includes:

[0049] The hydraulic transmission unit power input end DC motor 24, the hydraulic transmission unit power input end electromagnetic clutch 21, the hydraulic transmission unit input speed torque sensor 19, the tested hydraulic transmission unit 17, the hydraulic transmission unit output speed torque sensor 16;

[0050] The input end is sequentially connected to the AC variable frequency motor 22 at the power input end of the mechanical transmission unit, the electromagnetic clutch 20 at the power input end of the mechanical transmission unit, and the rotational speed torque sensor 18 of the mechanical transmission unit;

[0051] The hydraulic transmission unit outpu...

Embodiment 2

[0062] Such as image 3 As shown, a working method of a power-split hydraulic-mechanical compound transmission system electric loading multifunctional test bench, using the test bench provided by the technical solution of Embodiment 1, the specific operation process is as follows:

[0063] The operating modes of the four clutch engagement states in the converging mechanism 15 are controlled by the speed controller 11:

[0064] (1) The power transmission mode of the hydraulic transmission unit forward confluence

[0065] When the clutch L2153 and the clutch L4157 are engaged, the coupling shaft 164 of the mechanical transmission unit is connected with the ring gear 155 of the planetary gear system, and the coupling shaft 151 of the hydraulic transmission unit is always connected with the sun gear 161 of the planetary gear system through the fixed gear transmission formed by gear A152 and gear B162 , the output shaft 160 of the converging mechanism is connected with the planeta...

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Abstract

The invention relates to an electric loading multifunctional test bench for a power-dividing hydraulic mechanical composite transmission system and an application thereof, wherein the test bench comprises a mechanical part and a control part. An electric loading multifunctional test bench for a power-dividing hydraulic mechanical composite transmission system provided by the invention can realizethe performance test of the hydraulic transmission unit of the hydraulic mechanical composite transmission system, the transmission performance of the hydraulic transmission unit of the hydraulic mechanical composite transmission system is tested by simulating the actual driving condition and working condition of the applied vehicle, one-stage and multi-stage performance test of the hydraulic mechanical composite transmission hydraulic transmission unit, proportion test of mechanical and hydraulic power flow of the composite transmission system and automatic optimization distribution ratio ofmechanical and hydraulic power flow can be realized, and the optimal combination distribution scheme of mechanical and hydraulic power flow is finally realized according to the matching characteristiccurve of the engine, which provides power performance optimization of vehicles for the hydraulic mechanical composite transmission system put into production in the future.

Description

technical field [0001] The invention relates to a power-split hydraulic-mechanical composite transmission system electric loading multifunctional test bench and its application, which is suitable for the acquisition of performance parameters of hydraulic transmission units and the proportion test of mechanical and hydraulic power flow in transmission systems, and belongs to engineering field of mechanical technology. Background technique [0002] Construction machinery, tractors and other operating vehicles have the characteristics of large transmission power, complex operating conditions, and large speed adjustment range. The level of operation automation is required to be higher and higher. Hydraulic-mechanical continuously variable transmission is a type of power-split hydraulic-mechanical compound transmission that transmits power through the combination of hydraulic power flow and mechanical power flow. It can realize high-efficiency high-power power transmission throu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M13/022
CPCG01M13/022
Inventor 万丽荣戴汉政曾庆良孙志远田明倩刘文婷
Owner SHANDONG UNIV OF SCI & TECH
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