A hydraulically loaded machine-fluid mixed flow test platform and its application

A hydraulic loading and testing platform technology, which is applied in vehicle testing, mechanical component testing, machine/structural component testing, etc., can solve the problems of manpower and material resources, long cycle time, high cost, etc., and achieve cost saving and low production cost , the effect of easy maintenance

Active Publication Date: 2020-07-31
SHANDONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Most of the hydromechanical continuously variable transmission test platforms currently designed and developed are special test benches or devices after product trial production, and through a series of tests, the hydraulic transmission unit and mechanical transmission unit of the trial production product are often not the best design match solutions, and may even re-produce products, resulting in relatively high cost and long cycle of product design and development, consuming a lot of manpower and material resources

Method used

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  • A hydraulically loaded machine-fluid mixed flow test platform and its application
  • A hydraulically loaded machine-fluid mixed flow test platform and its application
  • A hydraulically loaded machine-fluid mixed flow test platform and its application

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Such as Figure 1 to Figure 3 As shown, this embodiment provides a hydraulically loaded machine-fluid mixed flow test platform, which mainly includes two aspects: a mechanical part and a control part:

[0053] The mechanical part includes:

[0054] A hydraulic motor 23, an electromagnetic clutch 22, an input speed torque sensor 21, and a shunt mechanism 20 connected in sequence at the input end;

[0055] One output end of the shunt mechanism 20 is sequentially connected to the rotational speed torque sensor 17 of the mechanical transmission unit and the hydraulic loading system 14 at the output end of the mechanical transmission unit;

[0056] The other output end of the shunt mechanism 20 is sequentially connected to the speed torque sensor 18 at the input end of the hydraulic transmission unit, the tested hydraulic transmission unit 16, the speed torque sensor 15 at the output end of the hydraulic transmission unit, and the hydraulic loading system 13 at the output e...

Embodiment 2

[0067] Such as Figure 4 As shown, a working method of a hydraulically loaded machine-hydraulic mixed flow test platform uses the technical solution of Embodiment 1 to simulate the power change of the power demand field in the vehicle power transmission system. The specific operation process is as follows:

[0068] The operating modes of the four clutch engagement states in the diverter mechanism 20 are controlled by the diverter mechanism controller 19:

[0069] (1) The power transmission mode of the hydraulic transmission unit forward confluence

[0070] When the clutch L1213 and the clutch L3203 are engaged, the coupling shaft 207 of the mechanical transmission unit is connected to the ring gear 202 of the planetary gear system, and the coupling shaft 206 of the hydraulic transmission unit is always connected to the sun gear 210 of the planetary gear system through the fixed gear transmission formed by gear A205 and gear B209 , the input shaft 212 of the splitter mechanism...

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Abstract

The invention relates to a hydraulically loaded machine-liquid mixed flow test platform and application thereof. The test platform is capable of realizing performance testing of a hydraulic transmission unit in a hydraulic mechanical buncher and efficiency detection of a variable speed device. On the basis of simulation of the actual working conditions and working conditions, the test platform iscapable of testing and analyzing the structure and performances and service lives of parts of the hydraulic mechanical buncher product, thereby realizing the optimal allocation proportion of the mechanical flow to the hydraulic flow in the composite transmission. Meanwhile, the reliable scientific basis is provided for evaluating the product design and quality; the product development cycle is reduced; and the product quality is improved. According to the invention, the test platform employs a hydraulic loading system; the manufacturing cost is low; and the maintenance becomes convenient. Thetest efficiency is high in testing; the load adjustment becomes convenient and stable. With the closed-loop speed control of the rotating speed, the stability of rotating speed testing is high. The test platform has a reasonable structural design and has advantages of simpleness, high reliability, safe operation and saved cost.

Description

technical field [0001] The invention relates to a hydraulically loaded machine-fluid mixed flow test platform and its application, which is especially suitable for acquiring performance parameters of a hydraulic transmission unit in a hydraulic mechanical stepless transmission and detecting transmission efficiency of the transmission, and belongs to the technical field of engineering machinery. Background technique [0002] The 21st century is an era of rapid development of the automobile industry. The automobile industry has gradually become a pillar industry in many countries. In order to control the quality of the automobile, it is bound to impose stricter requirements on its assembly and parts. The transmission is an important assembly in the automobile transmission system. In order to test and analyze the structure of transmission products and the performance and life of parts, provide a reliable scientific basis for product design and quality evaluation, shorten the pro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M17/007G01M13/023
Inventor 曾庆良田明倩万丽荣戴汉政孙志远
Owner SHANDONG UNIV OF SCI & TECH
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