Detection method, device and system of telescopic boom length and telescopic boom apparatus
A telescopic boom and detection device technology, which is applied to the detection of the length of the telescopic boom and the field of boom telescopic equipment, to achieve the effect of improving accuracy
Active Publication Date: 2015-03-11
ZOOMLION HEAVY IND CO LTD
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Problems solved by technology
[0004] Aiming at the problem of large errors in measuring the length of the telescopic boom through the voltage value changed by the rotation of the potentiometer in the related art, no effective solution has been proposed so far
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[0023] Hereinafter, the present invention will be described in detail with reference to the drawings and in conjunction with the embodiments. It should be noted that the embodiments in the application and the features in the embodiments can be combined with each other if there is no conflict.
[0024] Considering that the cable of the cable box is wound in multiple layers, there is a big difference between the length of the cable wound on the innermost layer and the length of the cable wound on the outermost layer corresponding to one revolution of the potentiometer. The expansion and contraction is calculated according to the number of turns of the potentiometer. The method of the length of the boom is not accurate enough. Embodiments of the present invention provide a method, device, system and equipment for detecting the length of a telescopic boom.
[0025] See figure 1 The flow chart of the method for detecting the length of the telescopic boom is shown. The method can be appl...
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The invention provides a detection method, a detection device and a detection system of telescopic boom length and a telescopic boom apparatus. The method comprises the following steps of: obtaining a bracing wire moving direction of a pull box of a boom to obtain a telescopic direction of the boom, wherein the bracing wire is provided with marks arranged in a predetermined rule, the predetermined rule comprises a label of the mark and distance between the marks; obtaining the moving distance of the bracing wire according to the marks on the bracing wire so as to obtain the displacement of the boom; and determining the actual length of the boom according to the telescopic direction and the displacement of the boom. According to the method provided by the invention, the problem that the method of measuring the length of the telescopic boom through a voltage value in rotation change of a potentiometer has large error is solved, and the accuracy of the detection of the telescopic boom length is improved.
Description
Technical field [0001] The present invention relates to the field of construction machinery, and more specifically, to a method, device, system for detecting the length of a telescopic boom, and a boom telescopic device. Background technique [0002] During the operation of construction machinery equipment with a telescopic boom, it is usually necessary to measure the telescopic length of the boom in real time. For example, taking a crane as an example, the real-time measurement of the telescopic length of the crane boom is mostly achieved by using a cable box length detector. The cable box is a reel that can transmit the signal from the boom head. By detecting the voltage value of the potentiometer inside the cable box length detector, the voltage value signal is input to the torque limiter to convert it into a hoist Boom telescopic length value, so as to achieve the function of boom telescopic length detection. Among them, the potentiometer is a resistive element with three le...
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IPC IPC(8): B66C13/16B66C23/88
Inventor 赵鑫钰吴新开曹书苾
Owner ZOOMLION HEAVY IND CO LTD