Synchronous Control System of Crawler Crane's Mast Lifting and Falling
A crawler crane, synchronous control technology, applied in the direction of cranes, load hanging components, transportation and packaging, etc., can solve problems such as abrupt changes in cylinder thrust
Active Publication Date: 2015-08-19
XCMG CONSTR MACHINERY
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Problems solved by technology
[0011] Another object of the present invention is to propose a crawler crane mast lift synchronous control system, which can solve the problem of sudden change in the thrust of the cylinder when the multi-stage cylinder is working
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[0037] The technical solutions of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments.
[0038] The lift synchronous control system of the crawler crane mast includes the main luffing wire rope, the main luffing winch, the mast lifting cylinder and the synchronous control device. One end of the crawler crane mast is fixed on the hinge point in front of the turntable, and the The hoist uses the main luffing wire rope to pull the other end of the mast. One end of the mast jacking cylinder is fixed on the hinge point at the bottom of the turntable, and the other end is connected to the lower surface of the mast through a connecting plate. The synchronous control device can choose to throttle the mast jacking oil cylinder and adjust the speed of the main luffing winch according to the large cavity pressure of the mast jacking oil cylinder according to the specific situation. The main luffing hoist is a pressur...
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The invention relates to a mast rise and fall synchronous control system of a crawler crane. The mast rise and fall synchronous control system of the crawler crane comprises a main amplitude variation steel wire rope, a main amplitude variation winch, a mast jacking oil cylinder as well as a synchronous control device, wherein one end of a mast of the crawler crane is fixed on a hinged point in front of a rotary platform, and the other end of the mast is dragged by the main amplitude variation winch through the main amplitude variation steel wire rope; one end of the mast jacking oil cylinder is fixed on a hinged point on the bottom of the rotary platform, and the other end of the mast jacking oil cylinder is connected to the lower surface of the mast through a connecting plate; and the synchronous control device comprises a throttling control device which is used for carrying out throttling control on the mast jacking oil cylinder as well as regulating the rope drawing and releasing speed of the main amplitude variation winch through the pressure of a large cavity of the mast jacking oil cylinder, and / or is a pressure control device which is used for controlling the rope drawing and releasing constant speed of the main amplitude variation winch. The mast rise and fall synchronous control system of the crawler crane provided by the invention can be used for reasonably controlling the oil cylinder stretching speed as well as the rope drawing and releasing speed of the main amplitude variation winch.
Description
technical field [0001] The invention relates to the field of crawler cranes, in particular to a synchronous control system for lifting and lowering a mast of a crawler crane. Background technique [0002] Crawler cranes usually have a mast mechanism. The front of the mast is connected to the jib pull plate, and the rear is connected to the main luffing wire rope, which is used to convert the movement of the main luffing winch into the pitching motion of the jib. It plays an important role in the installation and working process. When the crawler crane is disassembled, the mast and the jib pull plate are disconnected. Since the wire rope can only bear the tension, in order to make the mast lift normally, a mast jacking cylinder is usually set to provide thrust or support for the mast. [0003] In the mast structure of the existing crawler crane, the mast jacking cylinder causes the mast to receive an upward force, and the main luffing wire rope and the self-weight of the mas...
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IPC IPC(8): B66C13/20B66C13/16B66C23/82
Inventor 陈远泽张红松孙影徐刚刘可
Owner XCMG CONSTR MACHINERY