Control method, control device and control system for cantilever crane operation speed, and engineering machinery
A control method and a technology of a control device, which are applied in the field of boom operation speed control methods, systems, construction machinery, and devices, can solve the problems of unconsidered and low safety of boom operation, and achieve the effect of improving safety
Active Publication Date: 2016-07-27
ZOOMLION HEAVY IND CO LTD
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Problems solved by technology
[0006] Embodiments of the present invention provide a method, device, system and construction machinery for controlling the operating speed of the boom, which are used to solve the problem of relative motion between one or more sections of the boom and the entire boom that is not considered in the prior art. When the operation safety at the end of the boom is low, there is a problem that the operation safety of the boom is low
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[0078] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of patent protection of the present invention.
[0079] When the end of the boom is lifted or lowered, in order to avoid collision between the boom and the people and buildings on the construction site, the operating speed of the boom must be limited according to the specifications before the equipment leaves the factory (that is, when a certain section of the boom is running , the maximum speed of the end of the arm shall not be greater than 0.75m / s, and the maximum operating speed of the end of th...
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The invention discloses a control method, a control device and a control system for a cantilever crane operation speed, and the engineering machinery and aims to improve use safety of a cantilever crane. The method comprises steps that an expected absolute speed of a tail end of the cantilever crane is acquired in real time; the absolute speed is compared with the preset largest safety speed of the tail end of the cantilever crane; when the absolute speed is smaller than the preset largest safety speed of the tail end of the cantilever crane, the opening degree of each knuckle arm control valve is controlled according to a preset control current which corresponds to the present condition and corresponds to each corresponding knuckle arm control valve; when the absolute speed is larger than the largest safety speed of the tail end of the cantilever crane, a practical control current of each knuckle arm is acquired according to the absolute speed, and the opening degree of the knuckle arm control valve is controlled.
Description
technical field [0001] The invention relates to the technical field of construction machinery, in particular to a method, device, system and construction machinery for controlling the operating speed of a boom. Background technique [0002] With the rapid development of the construction industry, high-speed rail and other fields, various construction vehicles with jib equipment are widely used. Such vehicles are usually equipped with jibs. The shaft is hinged, and there is a boom cylinder connected between two adjacent joint arms. The boom cylinder can drive the two adjacent joint arms connected to the boom cylinder to rotate a certain angle around the connecting shaft to realize the folding and folding of the joint arm. Open. [0003] The boom valve group is used to control the operating speed of the boom. The boom valve group includes the control valves corresponding to the booms one by one. Each control valve is used to control the angular velocity of the corresponding b...
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Inventor 曾中炜
Owner ZOOMLION HEAVY IND CO LTD