Hydraulic control system of crane and crane with same
A technology of hydraulic control system and crane, which is applied in the field of hydraulic control system and crane control system, can solve the problems of complex control and high cost, and achieve the effect of reducing control process and saving cost
Active Publication Date: 2017-06-06
河北雷萨重型工程机械有限责任公司
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Problems solved by technology
[0003] The purpose of the present invention is to provide a hydraulic control system of a crane and a crane with it, so as to solve the problem that the crane in the prior art controls the installation of the counterweight and the control of the control room independently through the control system, and the problem of complicated control and high cost
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[0019] Hereinafter, the present invention will be described in detail with reference to the drawings and examples. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.
[0020] Such as figure 1 and 2 As shown, according to the embodiment of the present invention, the hydraulic control system of the crane includes an oil inlet pipe, an oil return pipe, a counterweight cylinder 90, a control chamber cylinder 80, a jib pin pull cylinder 70 and a jib installation cylinder 60, and the hydraulic control system also Including the joint control valve group, the joint control valve group includes the counterweight control valve group, the control room control valve group, the jib pin pull control valve group and the jib installation control valve group, the counterweight control valve group is connected between the oil inlet pipe and the return Between the oil pipes, includ...
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The invention provides a hydraulic control system of a crane and the crane therewith, wherein the hydraulic control system includes an oil inlet pipe, an oil return pipe, a weight-balancing oil cylinder, an operating room oil cylinder, a sub arm pulling pin oil cylinder and a sub arm installing oil cylinder. The hydraulic control system also includes a combining control valve group comprising: (1) a weight-balancing control valve group, which is connected between the oil inlet pipe and the oil return pipe and includes a first reversing valve being connected to the weight-balancing oil cylinder and controlling the stretch-out and contraction of the weight-balancing oil cylinder; (2) an operating room control valve group, which is connected between the oil inlet pipe and the oil return pipe and includes a second reversing valve being connected to the operating room oil cylinder and controlling the stretch-out and contraction of the operating room oil cylinder; (3) a sub arm pulling pin control valve group, which is connected between the oil inlet pipe and the oil return pipe and includes a third reversing valve being connected to the sub arm pulling pin oil cylinder and controlling the stretch-out and contraction of the sub arm pulling pin oil cylinder; and (4) a sub arm installing control valve group, which is connected between the oil inlet pipe and the oil return pipe and includes a fourth reversing valve connected to the sub arm installing oil cylinder and controlling the stretch-out and contraction of the sub arm installing oil cylinder.
Description
technical field [0001] The invention relates to the field of crane control systems, in particular to a crane hydraulic control system and a crane having the same. Background technique [0002] At present, there are the following types of control systems for wheeled cranes over 80 tons on the market: 1. Separately control and operate the crane counterweight installation, without control room control and related jib control systems; 2. Tracking through the programmable logic controller PLC The length information of the oil cylinder and the length information of the reference oil cylinder are compared to adjust the synchronous action of the counterweight, and independently control the related actions of the control room and the jib; 3. Independently perform crane counterweight installation, control room control and jib related systems Operation; 4. Combination control operation of crane counterweight installation and control room control. Among them, in the first scheme, its f...
Claims
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IPC IPC(8): B66C13/20F15B11/16
CPCB66C13/20B66C2700/01F15B11/16
Inventor 李金灵徐海东党伟陈林邓增俊
Owner 河北雷萨重型工程机械有限责任公司