Control unit, hydraulic system and lifting operating platform
A control unit and hydraulic system technology, applied in the direction of fluid pressure actuation system safety, lifting device, fluid pressure actuation device, etc., can solve the problems of increasing failure points and increasing costs
Active Publication Date: 2020-04-10
ZOOMLION INTELLIGENT ACCESS MASCH CO LTD
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- Abstract
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- Application Information
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Problems solved by technology
At present, the lifting process of the whole machine of this kind of work platform needs to be realized by adding oil circuit separately, which not only increases the failure points, but also increases the cost
Method used
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[0018] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. In the present invention, it should be understood that the orientation or positional relationship indicated by the terms "deviating from", "facing", "upper", "lower", "front", "backward", "left", "right" etc. The orientation or positional relationship actually used is corresponding; "inner and outer" refer to the inner and outer relative to the outline of each component itself; it is only for the convenience of describing the present invention and simplifying the description, not to indicate that the referred device or element must be Having a particular orientation, being constructed and operating in a particular orientation, and therefore not to be construed as limiting the invention.
[0019] The present invention will be described in detail below with reference to the drawings and in combination with embodiments.
[0020] In order to achiev...
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The invention relates to the technical field of hoisting and conveying machinery, and discloses a control unit, a hydraulic system and a lifting operating platform. The control unit comprises a plurality of reversing valves provided with two working stations, each reversing valve comprises a working pressure end, a first working end and a second working end, the first working end of the previous reversing valve is connected with the working pressure end of the next adjacent reversing valve, the working pressure end of the first reversing valve is used for communicating with oil sources, the first working end of the last reversing valve is used for communicating with a first execution unit, and the second working end of each reversing valve is used for communicating with a second executionunit; when all the reversing valves are in the first working station, the working pressure end of each reversing valve communicates with the first working ends, and oil inlet circuits of all the reversing valves are connected in series and oil return circuits of all the reversing valves are further connected in series; and when any reversing valve is in the second working station, the oil inlet circuits of the upstream reversing valves communicate with the oil return circuits, and the oil inlet circuits of the downstream reversing valves and the oil return circuits are cut off. Fault points are less, and the cost is low.
Description
technical field [0001] The invention relates to the technical field of hoisting and transporting machinery, in particular to a control unit, a hydraulic system and a lifting operation platform. Background technique [0002] In addition to the normal lifting mechanism, the work platform with high working height is usually equipped with traveling wheels and telescopic outriggers that can change the wheel spacing of the traveling wheels in two horizontal directions perpendicular to each other or in one of them. When working, the outriggers need to be opened to improve the stability of the work platform. During the telescopic process of the outriggers, the traveling wheels act together with the outriggers. In order to reduce the wear of the traveling wheels during the stretching of the outriggers, it is necessary to raise the entire work platform to suspend the traveling wheels during the stretching of the outriggers. When the outriggers are stretched in place, the whole machi...
Claims
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IPC IPC(8): F15B11/16F15B13/06F15B20/00B66F11/04
CPCB66F11/04F15B11/16F15B13/06F15B20/004F15B2211/31588F15B2211/8606
Inventor 胡宝平肖承丰邹婿邵
Owner ZOOMLION INTELLIGENT ACCESS MASCH CO LTD