Slewing angle detection device, system, method and construction machinery of slewing device
A technology of gyration device and gyration angle, which is applied in the direction of measuring device, transportation and packaging, and processing of building materials, etc. It can solve the problems of reducing the reliability of gyroscopic measuring device, the influence of proximity switch measurement, and the limited precision of gyroscopic measurement, etc.
Active Publication Date: 2016-07-27
ZOOMLION HEAVY IND CO LTD
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Problems solved by technology
More importantly, the small distance between the induction gear and the proximity switch makes it easy for butter to get stuck between them. Once iron substances stick to the butter, it will affect the measurement of the proximity switch and ultimately reduce the reliability of the rotary measuring device.
In addition, relying on the proximity switch to measure the rotation angle, limited by the number of teeth of the induction gear, the rotation measurement accuracy is limited
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[0019] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.
[0020] figure 1 A structural diagram of a swivel angle detection device of a construction machine swivel device according to an embodiment of the present invention is shown. The slewing device may be driven by a slewing motor through a reducer. Such as figure 1 As shown, the detection device 10 may include: a receiving device 101 for receiving the oil inlet flow rate of the rotary motor; a control device 102 for receiving the oil inlet flow rate and the fixed displacement of the rotary motor Determine the rotational speed of the gear of the rotary device with the reduction ratio of the reducer; determine the relative rotational angle of the gear during the sa...
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The invention discloses a rotary angle detection device, system, method and construction machinery of a rotary device of construction machinery. The slewing device is driven by a slewing motor through a reducer, and the device includes: a receiving device for receiving the flow rate of the oil inlet of the slewing motor; Determine the rotational speed of the gear of the slewing device according to the reduction ratio; determine the relative rotation angle of the gear during the sampling period according to the gear rotational speed and the sampling period; The absolute rotation angle is used to determine the current absolute rotation angle and store the current absolute rotation angle. Therefore, the detection of the rotation angle is not limited by the number of teeth of the gear, and the detection accuracy is high. At the same time, the defect of poor reliability caused by the use of proximity switches for detection is avoided. The entire detection equipment has a simple structure and is very convenient for installation and maintenance.
Description
technical field [0001] The present invention relates to the field of construction machinery, in particular to a detection device, system, method and construction machinery for the rotation angle of a rotary device of construction machinery. Background technique [0002] Slewing devices are widely used in various construction machinery industries (tower cranes, pump trucks, etc.), and the measurement of the slewing angle is very important for the control and safety performance of construction machinery. The rotary measuring device is directly related to the measurement of the rotary angle. Therefore, the reliability and accuracy of the rotary measuring device are the most critical elements for the accurate control of the rotary device of construction machinery. [0003] Today, there are many rotary encoders on the market. These encoders have high precision, but poor impact resistance, and cannot adapt to the harsh working environment of construction machinery. Two or three p...
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IPC IPC(8): G01B21/22E04G21/04B66C13/16
Inventor 王帅张虎秦晓峰尹君
Owner ZOOMLION HEAVY IND CO LTD