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Hydraulic driving system for active heave compensation crane

A wave compensation and drive system technology, applied in cranes and other directions, can solve the problems of insufficient response time, poor system dynamic characteristics, and low natural frequency, and achieve the effects of preventing heavy objects from sliding, high precision, and large adjustment range.

Inactive Publication Date: 2010-06-09
NAT UNIV OF DEFENSE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] For a hydraulic system with a large load, due to the low natural frequency and large damping, the dynamic characteristics of the system are poor, and the response time often cannot meet the requirements of active wave compensation.

Method used

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  • Hydraulic driving system for active heave compensation crane
  • Hydraulic driving system for active heave compensation crane
  • Hydraulic driving system for active heave compensation crane

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Embodiment Construction

[0016] The structure of the present invention is as figure 1 As shown, it consists of oil tank 1, lifting oil circuit and compensation oil circuit; lifting oil circuit oil suction filter 2, hydraulic pump 4, check valve 5, overflow valve 8, pressure relay 7, pressure gauge 6, high pressure filter 9 , electro-hydraulic proportional valve 11, oil inlet and outlet balance valves 12, 23 and hydraulic motor 13 and other hydraulic components, the connection of each component is in order according to the flow route of the oil: oil suction filter 2-hydraulic pump 4-one-way valve 5- High-pressure filter 9-electro-hydraulic proportional valve 11-oil inlet balance valve 12-hydraulic motor 13-oil outlet balance valve 23, overflow valve 8, pressure relay 7 and pressure gauge 6 are respectively installed at the outlet of check valve 5; The compensation oil route is oil suction filter 2', hydraulic pump 4', one-way valve 5', overflow valve 8', pressure relay 7', accumulator 19, pressure gaug...

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Abstract

The invention discloses a hydraulic driving system for an active heave compensation crane, which consists of an oil tank, a hoisting oil passage which comprises a hydraulic motor and is used for hoisting a heavy object and a compensation oil passage which comprises the hydraulic motor and is used for heave compensation; and the hydraulic motors in the hoisting oil passage and the compensation oil passage commonly drive a winch of the crane to rotate through a speed reducer. The system is characterized in that, 1) the hoisting of the heavy object and the heave compensation do not interfere with each other, a compensation loop can be closed under the situation of no sea waves, and then the whole system has the same functions with the ordinary crane; and the compensation loop can be opened under the situation of greater sea waves, and then the hoisting with the heave compensation can be carried out; 2) the precision of heave compensation is high; 3) the flexibility of the system is adjustable; and 4) the system is safe and reliable, and the two oil passages use the combination of two-way balance valves, thereby preventing the heavy object from sliding off.

Description

technical field [0001] The invention belongs to the driving system of a marine crane, in particular to a hydraulic driving system for an active wave compensation crane. Background technique [0002] When a ship is sailing or operating at sea, the materials consumed must be continuously replenished at sea. However, in the case of wind and waves at sea, the ups and downs of the waves will cause relative motion between the supply ship and the supplied ship. In this situation, if a conventional marine crane is used for replenishment at sea, it is easy to cause the cargo to hit the deck of the replenished ship during the replenishment process, and at the same time, the cargo that has been placed on the deck of the replenished ship may also appear again due to the sinking of the replenished ship. Suspension phenomenon, which poses a great threat to the safe operation of offshore replenishment. Therefore, it is of great significance to study a new type of wave compensation crane ...

Claims

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Application Information

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IPC IPC(8): B66C23/52
Inventor 胡永攀陈循陶利民陈仲生董睿徐小军李岳
Owner NAT UNIV OF DEFENSE TECH
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