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Winch lifting hydraulic system and crane

A hydraulic system and crane technology, applied in the field of cranes, can solve the problems of long lifting and lowering process, easy to produce fatigue and other problems, and achieve the effect of solving fatigue and convenient operation.

Pending Publication Date: 2020-08-25
ZHEJIANG SANY EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for the winch with long boom, the process of raising and lowering the winch takes a long time, and the operator keeps pulling the joystick for a long time, which is easy to cause fatigue

Method used

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  • Winch lifting hydraulic system and crane
  • Winch lifting hydraulic system and crane
  • Winch lifting hydraulic system and crane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] see figure 1 , figure 2 as well as image 3 , a winch lifting hydraulic system provided in this embodiment is applied to a crane. The winch lifting hydraulic system is used to control the crane winch 6 to perform a lifting or lowering action. Further, the winch 6 realizes the lifting or lowering action of the crane The jib (not shown) does the rising and falling action.

[0054] The winch lifting hydraulic system includes automatic control oil circuit 3, manual control oil circuit 4, switching control valve 2, lifting control valve group 5 and control module 7, and lifting control valve group 5 includes luffing hydraulic control valve 50 and lifting hydraulic control valve 51.

[0055] Among them, the control module 7 is electrically connected to the automatic control oil circuit 3 and the switching control valve 2 respectively, the switching control valve 2 is respectively connected to the automatic control oil circuit 3 and the manual control oil circuit 4, and th...

Embodiment 2

[0093] see figure 1 , Figure 4 as well as Figure 5 , this embodiment provides a winch lifting hydraulic system, which is applied to a crane. This embodiment is an improvement based on the solution of Embodiment 1. Compared with Embodiment 1, the main differences are:

[0094] For details, please refer to Figure 4 and Figure 5 , the automatic control oil circuit 3 includes a luffing solenoid valve group 31 and a lifting solenoid valve group 32, wherein the luffing solenoid valve group 31 and the lifting solenoid valve group 32 both include a reversing solenoid valve.

[0095] Among them, the luffing solenoid valve group 31 includes a first reversing solenoid valve 310, the lifting solenoid valve group 32 includes a second reversing solenoid valve 320, and the first reversing solenoid valve 310 and the second reversing solenoid valve 320 are all selected as three-position Four-way solenoid valve.

[0096] The third branch line 43 from the electromagnetic switching valve...

Embodiment 3

[0113] see Figure 1-Figure 5 , this embodiment provides a crane, which uses the winch lifting hydraulic system provided in the first embodiment or the second embodiment, to realize the switchable manual control mode and automatic control mode of the winch 6, and the operation is more convenient, without Fatigue will occur.

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Abstract

The invention provides a winch lifting hydraulic system and a crane, and relates to the technical field of cranes. The winch lifting hydraulic system comprises an automatic control oil way, a manual control oil way, a switching control valve and a control module; the control module controls the automatic control oil way and the switching control valve to act, and the switching control valve achieves oil way switching of the automatic control oil way and the manual control oil way under the control of the control module; when an automatic control oil way is switched, a crane winch enters an automatic control mode; and when the manual control oil way is switched, the crane winch enters a manual control mode, so that the manual control mode and the automatic control mode of the winch can be switched, the operation is more convenient, and the problem that an operator is easy to feel tired when pulling an operating handle for a long time is solved. The crane uses the winch lifting hydraulicsystem, the manual control mode and the automatic control mode of the winch can be switched, operation is more convenient, and fatigue cannot be generated.

Description

technical field [0001] The invention relates to the technical field of cranes, in particular to a hoisting hydraulic system and a crane. Background technique [0002] A crane refers to a multi-action hoisting machine that lifts vertically and carries heavy objects horizontally within a certain range. Among them, the winch system (including the main winch and auxiliary winch) is one of the most critical technical parameters for measuring the crane. [0003] In the prior art, during the hoisting and lowering process of the crane, the operator opens and closes the pilot oil of the main valve that controls the hoisting and lowering of the hoist through the joystick to realize the hoisting and lowering, but in the actual operation, there are the following question: [0004] For the hoisting of the short boom, the operator pulls the joystick to control the hoisting up and down without fatigue. However, for the hoisting of the long arm frame, the hoisting and lowering process tak...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66C13/20F15B11/08F15B13/02F15B21/08
CPCB66C13/20F15B11/08F15B13/02F15B21/08
Inventor 吴鑫俞晓斌石广远
Owner ZHEJIANG SANY EQUIP