CN-119083305-B - Installation method of cable-carried crane

CN119083305BCN 119083305 BCN119083305 BCN 119083305BCN-119083305-B

Abstract

The application provides a method for installing a cable-mounted crane, which comprises the following steps of preparing all parts of the cable-mounted crane, overhanging a main tower frame along a forward bridge direction, extending the main tower frame along the forward bridge direction to the outside of a main tower, installing hoisting equipment on the main tower frame, hoisting a travelling mechanism of the cable-mounted crane to a main cable by using the hoisting equipment, hoisting a main girder truss of the cable-mounted crane to the travelling mechanism of the main cable by using the hoisting equipment and connecting and fixing the main girder truss with the travelling mechanism, hoisting a lifting system, a hydraulic pump station and a control room of the cable-mounted crane to the main girder truss by using the hoisting equipment in sequence, and connecting steel strands of the lifting system with a lifting appliance to complete the installation of the cable-mounted crane. The installation method of the application has convenient operation and high construction safety.

Inventors

AN BANG
YANG XIN
HU JIANFEI
LI YI
JIANG DONG
WEI LIANG

Assignees

中交路桥华南工程有限公司
中交路桥建设有限公司

Dates

Publication Date: 20260505
Application Date: 20240815

Claims (7)

1. The installation method of the cable-carried crane is characterized by comprising the following steps of: Preparing a travelling mechanism, a girder truss and a lifting system of a cable-carried crane, after manufacturing the cable-carried crane by a whole machine in a factory and testing, disassembling the cable-carried crane into split components and transporting the split components to a construction site, splicing the split components of the cable-carried crane into standard sections through a tower crane and an automobile crane, transferring each component of the cable-carried crane to a barge, transporting each component of the cable-carried crane to the vicinity of a main tower through a barge for hoisting construction, wherein the travelling mechanism is connected with a main cable, the girder truss is arranged on the travelling mechanism, and the lifting system is arranged on the girder truss; Overhanging a main tower frame along a forward bridge direction, extending the main tower frame to the outside of the main tower along the forward bridge direction, and installing hoisting equipment on the main tower frame; hoisting a travelling mechanism of the cable carrying crane to a main cable by using the hoisting equipment for installation; When the main girder truss of the cable carrier crane is hoisted to the travelling mechanism by the hoisting equipment, the two box-type bearing girders at the end part of the main girder truss are hoisted to the two travelling mechanisms respectively and are fixedly connected through pin shafts, then the middle girder truss is hoisted between the two box-type bearing girders, the middle girder truss is connected with the two box-type bearing girders through high-strength bolts so as to complete connection and fixation of the main girder truss and the travelling mechanism, the middle girder truss comprises a plurality of box girder segments which are bolted through the high-strength bolts, and when the hoisted middle girder truss is hoisted, the plurality of box girder segments are assembled on the ground to form an integral middle girder, and then the hoisting equipment is used for integral hoisting; And hoisting the hoisting system, the hydraulic pump station and the control room of the cable-carrying crane into the girder truss in sequence by using hoisting equipment, and connecting steel strands of the hoisting system with a lifting tool to complete the installation of the cable-carrying crane.
2. The method for installing the cable-mounted crane according to claim 1, wherein the main tower frames are arranged at the top of the main tower, each main tower frame is provided with hoisting equipment, and the hoisting equipment on the two main tower frames corresponds to hoisting of the travelling mechanisms of the cable-mounted crane on the two main cables respectively.
3. The method according to claim 1, wherein when the hoisting equipment is used to hoist the travelling mechanism of the cable-mounted crane to the main cable, the travelling mechanism is lifted above the main cable, and the travelling mechanism is adjusted to be transferred to the main cable, and the main cable is held tightly by the exchangeable supporting hoop device of the travelling mechanism to complete the connection between the travelling mechanism and the main cable.
4. A method of installing a cable-mounted crane according to claim 3, wherein after the main cable is held tightly by the exchangeable support hoop means of the travelling mechanism to fix the travelling mechanism, the anchor point of the traction jack is installed at a predetermined position from the travelling mechanism, and the steel strand is threaded between the traction jack and the anchor point to pull the travelling mechanism to travel along the axial displacement of the main cable by the traction jack.
5. The method according to claim 1, wherein when the steel strands of the hoisting system are connected to the spreader, the spreader is lifted to the position of the lower beam of the main tower by a hoisting device, the steel strands of the take-up and pay-off device of the hoisting system are passed through the hoisting jack and the anchor heads of the steel strands are lowered to the lower beam, the anchor heads of the steel strands are connected to the spreader, and the spreader is lifted to the vicinity of the top of the tower by the hoisting jack.
6. The method according to claim 5, wherein the lifting tool comprises a shoulder pole beam, a shoulder pole Liang Huaxiang, lifting anchor seats, movable lifting lugs and a gravity center adjusting jack, the lifting anchor seats are arranged on the shoulder pole Liang Huaxiang, the lifting anchor seats are connected with anchor heads of steel strands, the pole Liang Huaxiang is arranged on the top of the shoulder pole beam, a base of the gravity center adjusting jack is connected with the shoulder pole beam, an extending end of a piston rod of the gravity center adjusting jack is connected with a shoulder pole beam slide box so as to push the shoulder pole beam slide box to move along the length direction of the shoulder pole beam through the gravity center adjusting jack, a group of movable lifting lugs are respectively arranged at two ends of the length direction of the shoulder pole beam, and the positions of the movable lifting lugs on the shoulder pole beam are adjustable.
7. The method of installing a cable-mounted crane according to claim 1, wherein the installed cable-mounted crane further comprises a test-hoisting test step before the hoisting operation is performed.

Description

Installation method of cable-carried crane Technical Field The application relates to the technical field of cable-carrying cranes, in particular to a method for installing a cable-carrying crane. Background The cable-carrying crane is an important device for erecting the steel beam of the suspension bridge, and the installation efficiency of the cable-carrying crane is directly related to the construction period of the steel beam of the suspension bridge. The general suspension bridge cable carries loop wheel machine installation is with running gear and girder truss separately hoist and mount, but girder truss structure is great, will girder truss directly be connected with running gear and can greatly increase the installation degree of difficulty to extension high altitude assembly operation time, and the hoist engine required hoist and mount weight is great, and long-time heavy load atress can lead to the arresting gear of hoist engine to damage greatly, thereby has increased each component assembly work's danger, influences suspension bridge's efficiency of construction. Disclosure of Invention The application aims to provide a method for installing a cable-mounted crane, which solves the problem that the construction safety is affected due to the fact that the load stress of hoisting equipment is increased by directly hoisting an integral girder truss by splitting the girder truss into an intermediate truss girder and a box-shaped spandrel girder. In order to achieve the above object, the present application provides the following technical solutions: A method of installing a cable-mounted crane, comprising the steps of: preparing a traveling mechanism, a girder truss and a lifting system of the cable-carried crane, wherein the traveling mechanism is connected with a main cable, the girder truss is arranged on the traveling mechanism, and the lifting system is arranged on the girder truss; Overhanging a main tower frame along a forward bridge direction, extending the main tower frame to the outside of the main tower along the forward bridge direction, and installing hoisting equipment on the main tower frame; hoisting a travelling mechanism of the cable carrying crane to a main cable by using the hoisting equipment for installation; Hoisting a girder truss of the cable carrying crane by using the hoisting equipment to a travelling mechanism arranged on a main cable and fixedly connected with the travelling mechanism; And hoisting the hoisting system, the hydraulic pump station and the control room of the cable-carrying crane into the girder truss in sequence by using hoisting equipment, and connecting steel strands of the hoisting system with a lifting tool to complete the installation of the cable-carrying crane. The method is characterized by further comprising the steps of preparing all the components of the cable carrying crane, after manufacturing the cable carrying crane and testing the cable carrying crane in a factory, disassembling the cable carrying crane into split components, transporting the split components to a construction site, splicing the split components of the cable carrying crane into standard sections through a tower crane and an automobile crane, transferring all the components of the cable carrying crane to a barge, and transporting all the components of the cable carrying crane to the vicinity of a main tower through a barge for hoisting construction. The main tower frame is provided with two groups of hoisting equipment at the top of the main tower, each group of hoisting equipment is arranged on the main tower frame, and the two groups of hoisting equipment on the main tower frame correspond to hoisting of travelling mechanisms of two main cable loading cranes respectively. When the hoisting equipment is used for hoisting the travelling mechanism of the cable-carrying crane to the main cable, the travelling mechanism is lifted to the upper part of the main cable, the position of the travelling mechanism is adjusted to transfer the travelling mechanism to the main cable, and the main cable is held tightly by the replaceable supporting hoop device of the travelling mechanism to complete the connection between the travelling mechanism and the main cable. The traction mechanism is characterized by further comprising the steps of installing an anchoring point of the traction jack at a preset position away from the travelling mechanism after the main cable is held tightly by the replaceable support hoop device of the travelling mechanism to fix the travelling mechanism, and penetrating a steel strand between the traction jack and the anchoring point so as to pull the travelling mechanism to travel along the axial displacement of the main cable through the traction jack. The main girder truss of the cable-carrying crane comprises an intermediate girder truss and two sections of box-type spandrel girders, when the main girder truss of the cable-carrying crane is hoisted to the tra