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System and method for eliminating cumulative errors of a crane

A technology of accumulating errors and cranes, which is applied in the testing of fluid pressure actuation systems, components of fluid pressure actuation systems, and mechanical equipment. , The effect of stable amplitude and good independence

Active Publication Date: 2019-08-13
SOUTH CHINA MARINE MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing hydraulic system of the crane does not have a synchronization system, and the winch is prone to out of synchronization after long-term operation, which affects the stability of the crane

Method used

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  • System and method for eliminating cumulative errors of a crane
  • System and method for eliminating cumulative errors of a crane
  • System and method for eliminating cumulative errors of a crane

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Embodiment Construction

[0032] A crane, used for ships, includes a mechanical part and a control part. The mechanical parts are inserted into the legs on the main deck, the slewing mechanism set on the main deck and sleeved on the legs, the herringbone frame on the slewing mechanism, the jib hinged with the gable frame, the arm frame set on the arm The main hook, auxiliary hook, luffing hook under the top of the frame, the main hoisting winch used to drive the main hook, the auxiliary main hoisting winch used to drive the auxiliary hook and the hoisting winch used to drive the luffing hook Luffing winch. The slewing mechanism includes a slewing support device and a slewing platform arranged on the slewing support device; both the slewing support device and the slewing platform are set on the pile legs and do not contact with the pile legs, so the two do not interfere with each other, so that the slewing platform and the pile The legs are perfectly combined, saving the space occupied by the splint. ...

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Abstract

The invention relates to a crane accumulative error elimination system and a crane accumulative error elimination method. The crane accumulative error elimination system comprises a PLC automatic control system, an emergency manual system, a luffing system for driving a luffing winch, a main lifting system, an auxiliary main lifting system, a rotation system, a main motor, a main pump and a hydraulic oil tank, wherein the PLC automatic control system controls a hydraulic control proportional multi-way valve through an electric proportional pressure reducing valve group, the emergency manual system comprises an emergency pump group connected to the hydraulic oil tank, and a hydraulic handle, the emergency pump group controls the luffing system, the main lifting system, the auxiliary main lifting system and the rotation system through the hydraulic handle, an electronic control handle controls the electric proportional pressure reducing valve group through the PLC automatic control system, and the PLC automatic control system detects the rotation speeds of a main lifting winch, an auxiliary main lifting winch, a luffing winch and a rotation mechanism respectively through an encoder.

Description

technical field [0001] The invention relates to a crane, in particular to a system and a method for eliminating cumulative errors of a crane used for ship operation. Background technique [0002] At present, the slewing crane around the pile is usually installed on the legs of various offshore platforms. It is widely used because of its small platform space, compact structure, large lifting capacity, and long lifting radius. [0003] The pile-wound slewing crane mainly includes a base, a slewing platform, a lifting mechanism and a hydraulic system. The slewing platform is rotatably set on the base, and the lifting mechanism is set on the slewing platform. There is enough space for the pile legs to pass through. In small pile-encircling slewing cranes, the slewing platform and base are usually connected by slewing bearings. The space is connected by rollers. Specifically, a slewing support ring is set on the base, and a plurality of positive roller assemblies and a plurality...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66C13/20B66C13/48B66D1/08F15B21/02F15B19/00
CPCB66C13/20B66C13/48B66D1/08F15B19/005F15B21/02F15B2211/20515
Inventor 陈懿梁兆环杜春江马倩云林云志
Owner SOUTH CHINA MARINE MACHINERY
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