Piston stroke detecting device, hydraulic system control device and method and engineering machine
A hydraulic system and piston technology, applied in the engineering field, can solve problems such as difficult maintenance and increased construction costs
Active Publication Date: 2014-01-08
ZOOMLION HEAVY IND CO LTD
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Problems solved by technology
The existing method of detecting the piston stroke of the delivery cylinder is to install a stroke sensor in the piston connecting rod, but this detection method requires a large modification of the existing pumping system, and it is difficult to maintain and increases the construction cost
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[0021] 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.
[0022] figure 1 A schematic diagram of the delivery cylinder, water tank and oil cylinder in the pumping equipment is shown. like figure 1 As shown, the pumping equipment includes a delivery cylinder 1, a water tank 3 and an oil cylinder 2, and the delivery cylinder piston 101 in the delivery cylinder 1 and the oil cylinder piston 201 in the oil cylinder 2 pass through the piston rod of the water tank 3 4 connections. Via the piston rod 4, the delivery cylinder piston 101 and the oil cylinder piston 201 reciprocate in the delivery cylinder 1 and the oil cylinder 2 respectively. like figure 1 As shown, the pumping device includes two delivery cylinders and t...
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The invention discloses a piston stroke detecting device, a hydraulic system control device and method and an engineering machine, and particularly discloses a device used for detecting the stroke of a piston of a conveying cylinder in a pumping device, a device and method used for conducting oil refilling and charging control on a hydraulic pumping system, and the engineering machine. The device comprises an induction part, a distance sensor and a processor. The induction part moves along with the piston of the conveying cylinder and is provided with an induction face, and the inclined face inclines by a certain angle relative to the moving direction of the induction part. The distance sensor is opposite to the induction face and is used for detecting the distance between the distance sensor and the induction face. The processor is connected with the distance sensor and is used for calculating the stroke of the piston of the conveying cylinder according to the distance detected by the distance sensor and the angle. Therefore, detection on the stroke of the piston of the conveying cylinder can be realized at low modification cost, the construction cost is lowered, and installation, adjustment and maintenance are very convenient.
Description
technical field [0001] The invention relates to the field of engineering, in particular to a device for detecting the stroke of a delivery cylinder piston in a pumping device, a device and a method for controlling oil replenishment and draining of a pumping hydraulic system, and engineering machinery. Background technique [0002] Concrete pumping equipment is high-pressure concrete conveying equipment. The pumping system often has hydraulic oil leakage or excess during operation, which leads to changes in the working stroke of the oil cylinder, reduces pumping performance, and even causes equipment damage. For this reason, it is necessary to carry out oil replenishment and drain control on the pumping hydraulic system, replenish oil when hydraulic oil leaks, and drain oil when there is too much hydraulic oil, so as to improve the operation performance of the equipment. [0003] In order to realize the oil supplement and drain control of the hydraulic system, it is necessary...
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IPC IPC(8): F15B19/00F15B7/10
Inventor 曾中炜
Owner ZOOMLION HEAVY IND CO LTD