Durability test method and device of swing mechanism

A technology of durability test and slewing mechanism, which is applied in machine gear/transmission mechanism testing, liquid tightness measurement using liquid/vacuum degree, and by measuring the increase and deceleration rate of fluid, etc., which can solve problems such as no slewing mechanism

Inactive Publication Date: 2010-12-01
XUZHOU CONSTR MACHINERY INST XUZHOU CONSTR MACHINERY GRP
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Problems solved by technology

At present, there is no experimental method and test device for rotary mechanism in China

Method used

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  • Durability test method and device of swing mechanism
  • Durability test method and device of swing mechanism

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Embodiment 1

[0028] Embodiment 1: The durability test device includes a power hydraulic system circuit, a loading hydraulic system circuit, a brake hydraulic system circuit and a leakage test circuit, the power hydraulic system circuit controls the active slewing mechanism; the passive slewing mechanism is connected to the loading hydraulic system circuit; The circuit of the dynamic hydraulic system controls the opening and closing of the brakes of the active slewing mechanism and the passive slewing structure; the leakage test circuit tests the leakage of the motors of the active slewing mechanism and the passive slewing mechanism.

[0029] The power hydraulic system circuit includes: hydraulic pump 1, motor 2, safety valve 3, first flow sensor 4, first check valve 5, first electromagnetic reversing valve 6, second electromagnetic reversing valve 7, first The three electromagnetic reversing valves 8, the fourth electromagnetic reversing valve 9 and the active rotary motor 10, the output sh...

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Abstract

A durability test method and a device of a swing mechanism belong to a test method and a device of a hydraulic element. The durability test device is composed of a dynamic hydraulic system circuit, a loading hydraulic system circuit, a braking hydraulic system circuit and a leakage test circuit, wherein the dynamic hydraulic system circuit controls an active swing mechanism; a passive swing mechanism is connected with the loading hydraulic system circuit; the braking hydraulic system circuit controls the opening and closing of the active swing mechanism and the passive swing mechanism; and the leakage test circuit tests the leakage rates of motors of the active swing mechanism and the passive swing mechanism. The invention has the advantages that the dynamic hydraulic system circuit realizes alternated rotation of the swing mechanism in the positive and negative directions via switching control of four magnetic exchange valves; a hydraulic pump adopts electro-hydraulic proportional pressure flow control to conveniently carry out control by a computer; and the computer collects data of each pressure sensor and each flow sensor, draws the data into a curve which is displayed on a computer screen intuitively.

Description

technical field [0001] The invention relates to a testing method and device for hydraulic components, in particular to a durability testing method and device for a rotary mechanism. Background technique [0002] The slewing mechanism is an important part of construction machinery such as hydraulic excavators, truck cranes, and crawler cranes. It is composed of a slewing motor and a slewing reducer. Its performance directly affects the efficiency and operating comfort of these construction machinery. JB / T5242-91 "Test Specifications for Slewing Mechanisms of Truck Cranes and Tire Cranes" requires the reliability test of the slewing mechanism and gives the reliability test working condition table, but does not give specific test methods and test devices. At present, there is no experimental method and test device for rotary mechanism in China. Contents of the invention [0003] The object of the present invention is to provide a durability test method and device for a slewi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M13/02G01M3/26
Inventor 杨力夫景军清刘莹莹
Owner XUZHOU CONSTR MACHINERY INST XUZHOU CONSTR MACHINERY GRP
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