Detection method and device for detecting oil pressure state of telescopic oil cylinder of crane and crane
A technology of state detection device and telescopic oil cylinder, which is applied in the direction of fluid pressure actuation device, fluid pressure actuation system test, mechanical equipment, etc., can solve the problem of high recognition efficiency and achieve the effect of rapid detection and accurate detection
Active Publication Date: 2019-01-18
HUNAN ZOOMLION INTELLIGENT TECH
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The disadvantage of this method is that the recognition efficiency of some obvious "abnormal" situations is not as high as that of category (1)
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[0036] The specific implementation manners of the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation manners described here are only used to illustrate and explain the embodiments of the present invention, and are not intended to limit the embodiments of the present invention.
[0037] figure 1 It is a flow chart of a method for detecting the positive / abnormal state of the telescopic oil cylinder of a crane provided by an embodiment of the present invention. Such as figure 1 As shown, the method includes:
[0038] Step S11, according to the factors affecting the oil pressure, obtain the vector affecting the oil pressure, the vector includes at least one proportional value affecting the oil pressure;
[0039] Step S12, perform the following operation on each proportional value affecting oil pressure in the at least one proportional value affecting oil p...
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The embodiment of the invention provides a method and a device for detecting the oil pressure state of a telescopic oil cylinder of a crane and the crane, and belongs to the field of equipment detection. The method comprises the following steps of: acquiring a vector influencing the oil pressure according to factors influencing the oil pressure, wherein the vector comprises at least one proportional value influencing the oil pressure; comparing an absolute value of a ratio between the oil pressure variation and the proportional value variation of the affected oil pressure with an oil pressureabrupt threshold value corresponding to the proportional value of the affected oil pressure, for each of the at least one proportional value of the affected oil pressure; and for each of the proportional values affecting the oil pressure, when the ratio between the oil pressure variation and the proportional value variation affecting the oil pressure is less than or equal to an oil pressure abruptthreshold value corresponding to the proportional value affecting the oil pressure, obtaining a detection result of the oil pressure positive / abnormal state of the telescopic oil cylinder according to the oil pressure state classification model and the vector influencing the oil pressure. The method can quickly detect when the oil pressure is obviously abnormal, and also can accurately detect when the oil pressure is extremely small.
Description
technical field [0001] The invention relates to equipment detection, in particular to a method and device for detecting the oil pressure state of a telescopic oil cylinder of a crane and a crane. Background technique [0002] The expansion and contraction of the structural parts in the crane is completed by the expansion and contraction of the built-in oil cylinder. The structural parts themselves are designed with a locking mechanism to reduce the loss of the oil cylinder for maintaining the structural posture for a long time. For example, the boom of a truck crane is a structural part that needs to bear the moment of heavy objects. The boom is nested by multiple sections, which can not only increase the working radius of the vehicle during work, but also increase the mobility of the vehicle during driving. When the boom is stretched, the oil cylinder inside the boom is realized by hydraulic pressure increase and decrease. If the boom posture is maintained by the oil cylind...
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Login to View More IPC IPC(8): F15B19/00B66C13/16
CPCB66C13/16F15B19/005
Inventor 谢明中许佳郭启训陈文龙世文
Owner HUNAN ZOOMLION INTELLIGENT TECH