DERRICKING JIB CRANE BY HYDRAULIC CYLINDER
申请公布号:JP2005126228(A)
申请号:JP20030393084
申请日期:2003.10.21
申请公布日期:2005.05.19
发明人:KOMADA MITSUHARU
分类号:B66C23/82;(IPC1-7):B66C23/82
主分类号:B66C23/82
摘要:PROBLEM TO BE SOLVED: To provide a climbing crane or a jib crane eliminating a derricking wire and a derricking winch by eliminating faults in a conventional climbing crane or jib crane whose jib has several derricking wires stretched among a plurality of sheaves to support the weight and lifting load of the jib, which increases a burden imposed on the derricking wires, a brake and the sheaves. SOLUTION: In this jib crane put in derricking motion by a hydraulic cylinder, a gantry provided with a plurality of sheaves at the apex is supported to a bottom boom put in derricking motion by the hydraulic cylinder supported to a revolving superstructure of a crane whose jib is put in derricking motion, and a gantry and the tip of the jib are connected by a pendant rope. A support frame provided with a plurality of sheaves at the apex is supported to the rear part of the revolving superstructure, and one end of a hoisting wire is wound into a winding drum, and the other end passed through a hook is passed through the plurality of sheaves and the plurality of sheaves. Using the tension of the hoisting wire applied to the hook when lifting load, the gantry is pulled to assist the hydraulic cylinder for putting the bottom boom in derricking motion. COPYRIGHT: (C)2005,JPO&NCIPI
MULTIPLE SHEET COPYING APPARATUS
CONTAMINATED GAS PROCESSING DEVICE
MEASURING METHOD OF FRICTIONAL CHARGING
FLOWING DIRECTION DECIDING CIRCUIT OF ELECTROMAGNETIC FLOWMETER
MANUFACTURE OF FLOW FORCE TEST MODEL MADE OF FOAMED RESIN
DOOR DEVICE CAPABLE OF RETAINING OPENING*CLOSING FUNCTION EVEN AGAINST SEISMIC DISASTER
PACKAGE TYPE POWER GENERATION EQUIPMENT
METHOD OF MOUNTING WATER TANK FOR SINK
POLLUTION DISPERSION PREVENTION METHOD IN SHALLOW SEA AREA CONSTRUCTION WORKS
LOOSENING * CURVE CORRECTING AND SETTING APPARATUS OF TRACK CORRECTING MACHINE
FILING AND WATER STOPPING STRUCTURE OF TRACK POURING OPENING
COLLECTING METHOD OF DUST IN GAS DUCT TRANSPORTATION FOR PULVERIZED COAL
CONTROLLING DEVICE FOR QUANTITATIVE DELIVERY FROM HOPPER RECEIVING BULK CARGO
CONTROLLING SYSTEM FOR STACKER CRANE
PRODUCTION OF DECORATIVE LAMINATE PANEL
REFLUX DEVICE FOR GRAIN* GLUTEN THEREOF IS NOT REMOVED* FOR GLUTEN REMOVING MACHINE