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Pressure and flow composite controlled electro-hydraulic proportion tension control system for towing winch of trawl

A technology of tension control and composite control, which is applied in the direction of spring mechanism, winch device, etc., to achieve the effect of reducing power loss and improving system stability

Inactive Publication Date: 2010-06-02
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an electro-hydraulic proportional tension control system for a trawler winch with combined pressure and flow control. The problems existing in the system flow control, the rapidity, accuracy and stability of the improved tension control of the drag line

Method used

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  • Pressure and flow composite controlled electro-hydraulic proportion tension control system for towing winch of trawl
  • Pressure and flow composite controlled electro-hydraulic proportion tension control system for towing winch of trawl
  • Pressure and flow composite controlled electro-hydraulic proportion tension control system for towing winch of trawl

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Embodiment Construction

[0017] Such as figure 1 As shown, the present invention includes two sets of electro-hydraulic proportional tension control systems with the same structure, and each set of electro-hydraulic proportional tension control systems includes a proportional directional valve 1, a balance valve 2, a safety valve 3, a proportional overflow valve 4, four single Directional valves 5-1, 5-2, 5-3, 5-4, two hydraulic motors 6-1, 6-2, controller 7, gear box 8, torque sensor 9 and angle encoder. Inlet port P of proportional directional valve 1 1 Connected with the constant pressure oil inlet pipeline 15, the oil outlet A of the proportional directional valve 1 1 With oil inlet A of balancing valve 2 2 Connected, oil outlet A of balance valve 2 3 With safety valve 3 oil inlet P 3 , the oil outlet of the first one-way valve 5-1, the oil inlet of the fourth one-way valve 5-4, one end a of the first hydraulic motor 6-1 2 And one end a of the second hydraulic motor 6-2 3 Connected, oil inle...

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Abstract

The invention discloses a pressure and flow composite controlled electro-hydraulic proportion tension control system for a towing winch of a trawl. The system comprises two sets of electro-hydraulic proportion tension control systems with the same structure, and each tension control system comprises a proportional directional-flow valve, a balance valve, a safety valve, a proportional overflow valve, four one-way valves, two hydraulic motors, a controller, a gear box, a torque sensor and a corner encoder. Towing winches in the two tension control systems are respectively connected with one end of each warp, while the other end of the warps is respectively connected with two ends of a netting gear through respective pulley. According to different operation conditions of the towing winch of the trawl, the system realizes proportion control on working tension of the warp, solves the problems of high labor strength, high technical requirement and low operation safety factor when the trawler fishes. The adopted hydraulic system of the towing winch can adapt to atrocious sea state, greatly improves the system safety, and ensures smooth performance of trawl fishing.

Description

technical field [0001] The invention relates to fishing equipment such as winches for ocean-going trawl fishing vessels, in particular to an electro-hydraulic proportional tension control system for trawl net winches with compound control of pressure and flow. Background technique [0002] When large-scale ocean-going trawlers carry out fishing operations, the trawl winch needs to adjust the speed of closing and releasing the trawl net in a timely manner according to the characteristics of the working conditions and operating requirements so that the trawl net maintains an appropriate tension. Otherwise, the catch may be reduced and the trawl net may fail. In severe cases, it will also cause huge losses such as damage to fishing equipment, breakage of cables and loss of trawl nets. Therefore, it is necessary to control the tension of the dragging winch according to the characteristics of the working conditions to improve the fishing efficiency of the trawl system and improve...

Claims

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Application Information

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IPC IPC(8): B66D1/50
Inventor 周华陈英龙杨华勇
Owner ZHEJIANG UNIV
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