Search

CN-122009985-A - Lifting and shifting mechanical equipment for cable-stayed bridge cable replacement

CN122009985ACN 122009985 ACN122009985 ACN 122009985ACN-122009985-A

Abstract

The invention relates to the technical field of cable replacement of cable-stayed bridges and discloses lifting and shifting mechanical equipment for cable-stayed bridge cable replacement, which comprises a crane, wherein one side of the crane is provided with a fixing component, one side of the crane is provided with a protection component, the fixing component comprises a clamping ring, one side of the inner wall of the clamping ring is fixedly connected with two groups of contact pads, a plurality of bolts are embedded in the inner threads of the clamping ring, the outer surface of the clamping ring is fixedly connected with a plurality of fixing plates, one side of the outer surface of each of the plurality of fixing plates is fixedly connected with a hydraulic rod, and a plurality of the contact pads are all made of polyester modified polyurethane elastomer materials.

Inventors

  • HAN WENJIE
  • YAN SHUAIQI

Assignees

  • 郑州大学

Dates

Publication Date
20260512
Application Date
20260206

Claims (6)

  1. 1. The lifting and shifting mechanical equipment for cable-stayed bridge cable replacement comprises a crane (1) and is characterized in that a fixed component is arranged on one side of the crane (1), and a protection component is arranged on one side of the crane (1); the fixing assembly comprises a clamping ring (2), two groups of contact pads (3) are fixedly connected to one side of the inner wall of the clamping ring (2), a plurality of bolts (202) are embedded in internal threads of the clamping ring (2), a plurality of fixing plates (4) are fixedly connected to the outer surface of the clamping ring (2), a hydraulic rod (401) is fixedly connected to one side of the outer surface of each of the fixing plates (4), and a plurality of contact pads (3) are made of polyester modified polyurethane elastomer; The protection component comprises a plurality of liquid cylinders (5), the inside of each liquid cylinder (5) is provided with a sliding rod (501) in a sliding embedded mode in the horizontal direction, one side of the outer surface of each sliding rod (501) is fixedly connected with a piston (502), the inside of each liquid cylinder (5) is provided with a liquid outlet pipe (505), and the inside of each liquid outlet pipe (505) is provided with a pressure valve (506).
  2. 2. The lifting and shifting mechanical equipment for cable-stayed bridge cable replacement according to claim 1, wherein the outer surface of the clamping ring (2) is fixedly connected with a steel cable (201), and one end of the steel cable (201) away from the clamping ring (2) is fixedly connected with the crane (1).
  3. 3. The lifting and shifting mechanical device for cable-stayed bridge cable replacement according to claim 1, wherein the output shafts of the hydraulic rods (401) are fixedly connected with fixing grooves (402), and connecting rods (403) are rotationally embedded in the fixing grooves (402).
  4. 4. The lifting and shifting mechanical equipment for cable-stayed bridge cable replacement according to claim 3, wherein the outer surfaces of the connecting rods (403) are respectively sleeved with rollers (6) in a rotating mode, the rollers (6) are made of 45# high-quality carbon structural steel, and polyether polyurethane elastomer is selected as an outer cladding of the rollers (6).
  5. 5. The lifting and shifting mechanical equipment for cable-stayed bridge cable replacement according to claim 1, wherein one side of the outer surfaces of the liquid cylinders (5) is fixedly connected with liquid supplementing pipes (507), and screw caps (508) are sleeved on the outer surfaces of the liquid supplementing pipes (507) respectively.
  6. 6. The lifting and shifting mechanical equipment for cable-stayed bridge cable replacement according to claim 1, wherein a baffle plate (503) is fixedly connected to one side of the outer surfaces of the sliding rods (501), and springs (504) are wound around the outer surfaces of the sliding rods (501).

Description

Lifting and shifting mechanical equipment for cable-stayed bridge cable replacement Technical Field The invention relates to the technical field of cable replacement of cable-stayed bridges, in particular to lifting and shifting mechanical equipment for cable-stayed bridge cable replacement. Background The cable-stayed bridge cable is used as a core stress member of the bridge to directly bear the load of a main girder and a cable tower of the bridge, is easy to be damaged by environmental corrosion, fatigue, broken wires and the like under the action of alternating load in the long-term service process, and needs to be removed and replaced in order to ensure the safety and normal passing of the bridge structure, namely the cable-stayed bridge cable replacement construction; In the low idle running link of the construction, the crane is common equipment for realizing space displacement of the inhaul cable, the crane lifting hook and the inhaul cable are temporarily and flexibly connected through the synthetic fiber hoisting binding band in the existing construction, the force transmission of the lifting hook and the inhaul cable is realized by means of winding and locking of the binding band, and the foundation transfer operation of the inhaul cable from a transport carrier to a bridge deck, short-distance displacement of the bridge deck and the like is completed. The mode that current hoist lifting hook passes through the bandage and connects the cable only relies on artifical winding to realize interim fixedly, synthetic fiber bandage itself is flexible material, the irreversible plastic stretching deformation that easily takes place after the atress, leads to winding tightness quick decline, and the PE inoxidizing coating on cable surface is smooth, make the static friction power between bandage and the cable be difficult to satisfy the atress demand of cable, the problem of easily appearing the bandage along cable axial, radial sliding, and artifical winding's tightness is difficult to accurate accuse, can then form excessive extrusion to cable PE sheath, cause damage such as sunken, indentation. Disclosure of Invention The invention aims to provide lifting and shifting mechanical equipment for replacing a cable-stayed bridge cable, which solves the problems that in the prior art, the existing crane hook is connected with the cable through a binding belt, temporary fixation is realized only by manual winding, a synthetic fiber binding belt is made of flexible materials, irreversible plastic stretching deformation easily occurs after stress, the winding tightness is rapidly reduced, a PE protective layer on the surface of the cable is smooth, the static friction force between the binding belt and the cable is difficult to meet the stress requirement of the cable, the slippage problem of the binding belt along the axial direction and the radial direction of the cable easily occurs, the manual winding tightness is difficult to accurately control, and excessive extrusion is formed on a PE sheath of the cable, so that damage such as dent and indentation is caused. In order to solve the technical problems, the invention provides the technical scheme that the lifting and shifting mechanical equipment for cable-stayed bridge cable replacement comprises a crane, wherein one side of the crane is provided with a fixed component, and one side of the crane is provided with a protection component; The fixing assembly comprises a clamping ring, two groups of contact pads are fixedly connected to one side of the inner wall of the clamping ring, a plurality of bolts are embedded in the inner threads of the clamping ring, a plurality of fixing plates are fixedly connected to the outer surface of the clamping ring, a hydraulic rod is fixedly connected to one side of the outer surface of each of the plurality of fixing plates, and the contact pads are made of polyester modified polyurethane elastomer; The protection component comprises a plurality of liquid cylinders, the inside of each liquid cylinder is provided with a sliding rod in a sliding embedded mode in the horizontal direction, one side of the outer surface of each sliding rod is fixedly connected with a piston, the inside of each liquid cylinder is provided with a liquid outlet pipe, and the inside of each liquid outlet pipe is provided with a pressure valve. Preferably, the outer surface of the clamping ring is fixedly connected with a steel cable, and one end of the steel cable, which is far away from the clamping ring, is fixedly connected with the crane. Preferably, the output shafts of the hydraulic rods are fixedly connected with fixing grooves, and connecting rods are rotationally embedded in the fixing grooves. Preferably, the outer surfaces of the connecting rods are all rotatably sleeved with rollers, the rollers are made of 45# high-quality carbon structural steel, and the outer wrapping layers of the rollers are polyether polyurethane elastomers. Pre