A speed regulating device and a crane superlift deployment control system
A control system and speed regulating device technology, which is applied to cranes, fluid pressure actuators, mechanical equipment, etc., can solve problems such as unstable speed regulating performance and asynchronous movement of super-lifting and deploying oil cylinders
Active Publication Date: 2017-01-25
XUZHOU HEAVY MASCH CO LTD
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Problems solved by technology
[0009] The purpose of the present invention is to propose a speed regulating device and a super-lift deployment control system for cranes, to solve the problem that the speed regulation performance is unstable with the change of load pressure in the prior art, and to solve the two problems in the existing super-lift deployment control system. The problem of unsynchronized movement of a super-lifting cylinder provides the conditions
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[0028] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0029] In describing the present invention, it is to be understood that the terms "center", "longitudinal", "transverse", "front", "rear", "upper", "lower", "left", "right", " The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner" and "outer" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and Simplified descri...
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The invention relates to a speed regulation device and a crane superlift deploying control system. The speed regulation device comprises a speed regulation valve, a second speed regulation valve, a first pilot operated check valve and a second pilot operated check valve, wherein a first oil inlet and a first oil outlet on the speed regulation device are respectively communicated with an inlet of the first speed regulation valve and an outlet of the first pilot operated check valve; an outlet of the first speed regulation valve is communicated with an inlet of the first pilot operated check valve; a second oil inlet and a second oil outlet on the speed regulation device are respectively communicated with an inlet of the second speed regulation valve and an outlet of the second pilot operated check valve; an outlet of the second speed regulation valve is communicated with an inlet of the second pilot operated check valve; a control port of the first pilot operated check valve is connected with the second oil inlet; a control port of the second pilot operated check valve is connected with the first oil inlet. The speed regulation device has speed regulation and load maintaining functions through combining the speed regulation valves and the pilot operated check valves; the superlift deploying control system containing the speed regulation device is capable of realizing the synchronism of movement of two superlift deploying oil cylinders.
Description
technical field [0001] The invention relates to the technical field of engineering machinery, in particular to a speed regulating device and a crane super-lifting deployment control system. Background technique [0002] In modern hoisting machinery, super-large-tonnage all-terrain cranes are generally equipped with a super-lift device, which is an effective device to increase the lifting weight of the crane. On the one hand, the super-lift device can reduce the deflection of the boom. The side bending of the boom can be reduced to a certain extent, and the lifting performance of the main boom in the middle and long distances can be increased. The super-lifting device mainly includes super-lifting bracket, super-lifting arm, super-lifting winch, super-lifting locking device, etc., such as figure 1 shown. [0003] The super-lift arm needs to change the deployment angle when it is working and not working, so as to improve the stability of the super-lift system and facilitate ...
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IPC IPC(8): F15B11/02B66C13/18B66C23/693
CPCB66C13/20B66C23/705F15B11/05
Inventor 王守伟戚厚保高飞任印美靳亮
Owner XUZHOU HEAVY MASCH CO LTD