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A dynamic failure detection system and method for pitch reversing valve of construction machinery

A technology of construction machinery and detection system, applied in the direction of mechanical valve testing, etc., can solve the problems of poor safety, slow response, low precision, etc., and achieve the effect of fast response time, high precision and strong degree of automation

Active Publication Date: 2021-05-25
BEIJING MECHANICAL EQUIP INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above analysis, the present invention aims to provide a dynamic failure detection system and method for the pitch reversing valve of construction machinery, which is used to solve the problems of poor safety, low precision and slow response in the failure detection method of the pitch reversing valve of construction machinery. , the problem of long time

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  • A dynamic failure detection system and method for pitch reversing valve of construction machinery
  • A dynamic failure detection system and method for pitch reversing valve of construction machinery

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Embodiment 1

[0038] A specific embodiment of the present invention discloses a dynamic failure detection system for pitch reversing valves of engineering machinery, the structural diagram is as follows figure 1 shown. Wherein, the pitch reversing valve is used to receive the reversing action control command, and switch the construction machinery pitch structure according to the reversing action control command (that is, the mechanical arm of the construction machinery, such as the boom of the crane, is installed inside the construction machinery device. ) direction of motion; the failure detection system includes an angular velocity detection module, a heading instrument, and a failure detector; the angular velocity detection module is used for real-time detection of the axial direction of the engineering machinery pitch structure (corresponding to the above-mentioned mechanical arm and boom) Angular velocity; the heading instrument is used to receive the axial angular velocity, and perfor...

Embodiment 2

[0051] In another embodiment of the present invention, a method for dynamic failure detection of pitch reversing valve of engineering machinery is disclosed, the flow chart is as follows figure 2 As shown, the method is implemented based on the above-mentioned dynamic failure detection system for pitch reversing valves of construction machinery, and the steps are as follows:

[0052] Step S1: Build a dynamic failure detection system for pitch reversing valves of construction machinery as described in Example 1;

[0053] Step S2: the pitch reversing valve receives the reversing motion control command, and switches the motion direction of the pitching structure of the construction machinery according to the reversing motion control command;

[0054] Step S3: The angular velocity detection module detects the axial angular velocity of the pitching structure of the construction machine in real time, and sends the axial angular velocity to the heading instrument;

[0055] Step S4:...

Embodiment 3

[0059] Based on the system of any one of the above embodiments, in yet another embodiment of the present invention, a specific method for detecting dynamic failure of the pitch reversing valve of construction machinery is also provided.

[0060] In this embodiment, the gyroscope is selected as the angle detection device: the output end of the gyroscope is connected to the input end of the heading instrument through a bus; the data acquisition and sending module and the heading module are placed inside the heading instrument, and bidirectionally connect. The output end of the heading instrument is connected with the input end of the failure detector through the bus. The data acquisition and sending module is used to collect and send data, and the heading module is used to perform error compensation on the data received from the gyroscope to obtain the compensated angular velocity. The failure detection method comprises the following steps:

[0061] Step S1: Build a dynamic fa...

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Abstract

The invention relates to a dynamic failure detection system and method for a pitching reversing valve of construction machinery, belongs to the technical field of reversing valve failure detection, and solves the problems of poor safety, low precision and long time in the prior art. The dynamic failure detection system of the pitching reversing valve of construction machinery, the pitching reversing valve is used to receive the reversing action control command, and switch the motion direction of the construction machinery pitching structure according to the reversing action control command; the failure detection system includes an angular velocity detection module, a Heading instrument and failure detector; among them, the angular velocity detection module is used to detect the axial angular velocity of the pitch structure of construction machinery in real time; the heading instrument is used to receive the axial angular velocity, and perform error compensation on the axial angular velocity to obtain the compensated angular velocity; failure; The detector is used to judge whether the movement direction indicated by the reversing action control command is consistent with the compensated angular velocity direction. If they are inconsistent, the pitch reversing valve will fail. The method effectively improves the detection accuracy and speed of the reversing valve failure.

Description

technical field [0001] The invention relates to the technical field of failure detection of a reversing valve, in particular to a dynamic failure detection system and method for a pitch reversing valve of construction machinery. Background technique [0002] Modern construction machinery often needs to move upward on the pitch axis relative to the horizontal plane in order to complete erection, pitching and other actions, and prepare for subsequent tasks such as hoisting, loading and unloading. As a key motion control device in the control link, the pitch reversing valve determines the motion direction of the pitch axis and the mechanical system. If the pitch reversing valve fails, the mechanical system will not be able to move in the expected direction, which will affect the safety of construction machinery and on-site personnel. In addition, with the improvement of informatization and intelligence of modern construction machinery, many construction machinery are often in ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M13/003
CPCG01M13/003
Inventor 尚焜高润鹏王昊王帆
Owner BEIJING MECHANICAL EQUIP INST