Hydraulic buffer performance testing method based on computer

A technology of hydraulic buffers and testing methods, which is applied in the testing of mechanical components, testing of machine/structural components, impact testing, etc. It can solve the problems of low precision, low degree of automation, low efficiency, etc., to improve accuracy, Easy operation, accurate control effect

Inactive Publication Date: 2015-01-28
HOHAI UNIV CHANGZHOU
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Problems solved by technology

[0011] The purpose of the present invention is to provide a method for performance testing of hydraulic buffers by computer, to solve the speed accuracy and stability problems in the low-speed walking friction resistance test under the existing test method, and to solve the low efficiency in the impact resistance test , low-precision load adjustment problems, and solve the problem of low automation of existing test methods

Method used

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  • Hydraulic buffer performance testing method based on computer
  • Hydraulic buffer performance testing method based on computer
  • Hydraulic buffer performance testing method based on computer

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Embodiment Construction

[0040]

[0041] The present invention will be further described below in conjunction with the accompanying drawings.

[0042] Such as Figure 1-Figure 4 , a computer-based hydraulic shock absorber performance test method,

[0043] To test the performance of the buffer, it is first necessary to connect the computer 1 to the data acquisition controller 2 as shown in Figure 1, where the data acquisition controller 2 is composed of a multi-function data acquisition card NI PCI-6229 and a terminal box containing a low-pass filter circuit . Connect the voltage output of the LVDT displacement sensor 3-1 and the spoke type tension and compression load sensor 3-2 with the analog input channel in the terminal box. The analog output channels in the terminal box are respectively connected to the input ends of the power amplifiers of the proportional relief valve 4-3 and the proportional reversing valve 4-4. Install the product to be tested 5 between the drive cylinder 4-2 a...

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Abstract

The invention discloses a hydraulic buffer performance testing method based on a computer. The testing method includes the steps that when hydraulic buffer performance is tested, the computer and a data collection control system are connected through a PCI, two paths of analog input of the data collection control system are connected with the voltage output end of a displacement sensor and the voltage output end of a load sensor, and two paths of analog output of the data collection control system are connected with a proportional directional valve and a proportional overflow valve of a hydraulic drive device through power amplifiers respectively; then basic data are input; an engineering database is set up, low-speed walking frictional resistance tests in the stretching and compressing directions are carried out after basic information of a product to be tested is input, and impact resistance tests in the stretching direction and the compressing direction are each carried out. The hydraulic buffer performance testing process can be automatic based on a computer measurement and control technology and a database technology, by introducing feedback control, the low walking speed is increased, and the accuracy of a locked load is improved; the testing method has the advantages of being convenient and fast to operate.

Description

[0001] technical field [0002] [0003] The invention relates to the field of product performance testing, in particular to a computer-based hydraulic buffer performance testing method. [0004] Background technique [0005] [0006] Hydraulic Snubber (Hydraulic Snubber), also known as hydraulic shock absorber, limiter, etc., is a vibration damping device that responds sensitively to speed. It uses a special structure valve to control the movement of hydraulic cylinder pistons to suppress the impact load of pipelines or equipment influences. It is mainly used to prevent damage to pipelines or equipment due to earthquakes, water hammer, steam hammer, wind load, safety valve exhaust and other impact loads. The hydraulic shock absorber can move slowly when the pipeline or equipment is normally thermally expanded, and at this time it has almost no resistance; when it is subjected to a rapid impact, the internal valve is locked, which produces a large resistance to resist th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M13/00G01M7/08
Inventor 汤炳新钱雪松王占军
Owner HOHAI UNIV CHANGZHOU
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