Hydraulic excavator rotation performance test device and test method

Abstract

The invention discloses a hydraulic excavator rotation performance test device and a test method and belongs to the construction machinery technical field. The test device includes an optical fiber optic gyro module, pressure sensors, a data acquisition instrument and a data analysis module; the fiber optic gyroscope module is fixed on a rotary excavator; the pressure sensors are installed on thepilot oil passages of a handle; the fiber optic gyro module and the pressure sensors are connected with the data acquisition instrument through a signal line; and measured data are processed by the data analysis module, so that a corresponding test curve can be obtained. With the hydraulic excavator rotation performance test device and the test method of the invention adopted, a rotation braking angle curve, a rotation angular velocity curve, the angular acceleration curves of an acceleration / deceleration section, braking deceleration time and start-up acceleration time can be accurately measured; the problem of inconvenience in installation caused by using a conventional encoder to perform rotation measurement and the problem of low accuracy of angular velocity and angular acceleration which are obtained on the basis of angular displacement can be solved. The hydraulic excavator rotation performance test device and the test method of the present invention have the advantages of simpleand convenient installation and high measurement accuracy.

Description

technical field [0001] The invention belongs to the technical field of excavators, and in particular relates to a slew performance test device and method, in particular to a hydraulic excavator slew performance test device and a test method. Background technique [0002] The slewing performance of the excavator is one of the important parameters to characterize the performance of the excavator, and it is an important measurement index in the development process of new products. [0003] In the prior art, measuring the slewing performance index of excavation is usually to install an encoder at the position of the slewing bearing, collect the pilot pressure of the handle at the same time, measure the angular displacement of the encoder and the pilot pressure signal during the whole slewing process of starting, constant speed, and braking synchronously, and then calculate Get the relevant rotational angular velocity and angular displacement parameters. [0004] There are the f...

AI Technical Summary

Problems solved by technology

[0004] There are the following problems in using the encoder to measure the slewing performance of the excavator: (1) The fixture for installing the encoder is not universal, and one fixture can often only meet the use of some models

(2) Large-tonnage excavators usually have no installation space for encoder rollers

(4) The output of the encoder is a discrete angular displacement signal, which usually requires differential processing to obtain angular velocity, while obtaining angular acceleration requires secondary differential processing, which will introduce a lot of noise, making it difficult to use the angular acceleration signal

Images