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Hydraulic control system of crane

A technology of hydraulic control system and crane, which is applied in the field of hydraulic control and can solve the problem of high reset cost

Active Publication Date: 2017-09-01
WUHAN MARINE MACHINERY PLANT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem of high cost of resetting traditional cranes in emergency situations, the embodiment of the present invention provides a hydraulic control system for cranes

Method used

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  • Hydraulic control system of crane
  • Hydraulic control system of crane
  • Hydraulic control system of crane

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Embodiment Construction

[0025] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0026] figure 1 It is a structural schematic diagram of a hydraulic control system of a crane provided by an embodiment of the present invention, as shown in figure 1 As shown, the hydraulic control system includes a hydraulic control system including a rotary valve group 20 and a winch valve group 30 .

[0027] The slewing valve group 20 includes a slewing hydraulic motor 21 for driving the crane to slew, and a first control valve 22. The first oil port of the slewing hydraulic motor 21 communicates with the A port of the first control valve 22, and the B port of the first control valve 22 It communicates with the first oil port 11 of the system, the second oil port of the rotary hydraulic motor 21 communicates with the C port of the...

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Abstract

The invention discloses a hydraulic control system of a crane, and belongs to the field of hydraulic control. The hydraulic control system comprises a rotation valve set and a winch valve set; the rotation valve set comprises a rotation hydraulic motor used for driving the crane to rotate and a first control valve, the winch valve set comprises a winch hydraulic motor, a second control valve and a reset control valve, a second oil port of the winch hydraulic motor is communicated with a first oil port of the reset control valve, a second oil port of the reset control valve is communicated with a first oil port or second oil port of the rotation hydraulic motor, the winch hydraulic motor is used for driving a main ascending mechanism, an auxiliary ascending mechanism or amplitude variation mechanism of the crane so as to enable hydraulic oil in a pipeline of the winch valve set to be pressed into the rotation hydraulic motor under the pressure effect, so that the rotation hydraulic motor is driven to rotate, a rotating table is driven to be reset, meanwhile, the rotation hydraulic motor rotates, heavy objects or lifting arms gradually descend under the gravity effect, and resetting is finished.

Description

technical field [0001] The invention relates to the field of hydraulic control, in particular to a hydraulic control system of a crane. Background technique [0002] Crane is a common construction machinery, which is widely used in transportation, construction and other industries. [0003] Cranes usually include a hoisting mechanism, a luffing mechanism and a slewing mechanism. In the crane, the hoisting mechanism, luffing mechanism and slewing mechanism are equipped with independent hydraulic motors. In the hoisting mechanism, the lifting and lowering of heavy objects are controlled by the rotation of the hydraulic motor. In the luffing mechanism, the hydraulic motor The rotation of the boom controls the pitch of the boom, and in the slewing mechanism, the rotation of the turntable is controlled by the rotation of the hydraulic motor. [0004] During the working process of the crane, if there is an emergency situation of power interruption suddenly, the crane will lose p...

Claims

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Application Information

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IPC IPC(8): B66C13/20F15B11/16F15B13/06
CPCB66C13/20F15B11/16F15B13/06
Inventor 王小洋王洪林王进峰李占勇
Owner WUHAN MARINE MACHINERY PLANT
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