CN-122009966-A - Aerial repair method for double-box girder shore bridge trolley frame

CN122009966ACN 122009966 ACN122009966 ACN 122009966ACN-122009966-A

Abstract

The embodiment of the invention provides an aerial repair method for a double-box-beam shore bridge trolley frame, and relates to the field of repair of cracks of shore bridge trolley frames. Aims to solve the problem that the repair operation cannot be carried out in the air because the trolley frame is suspended without a stress point. The flexible adjusting-rigid fixing structure is constructed by taking the machine room as an air counterforce foundation, wherein the trolley frame is firstly lifted by the flexible adjusting piece and accurately adjusted in posture, and then the posture is locked by the rigid supporting piece. The construction difficulty of the suspended stress-free point of the trolley frame is fundamentally solved, large-scale hoisting equipment is not needed, in-situ repair is realized, the construction flow is simplified, the period is shortened, the cost is reduced, and the site occupation and the safety risk of large-scale hoisting are avoided.

Inventors

LU YUCHUN
ZHOU JING
QIAN YANYAN
LING RUINAN

Assignees

上海振华重工(集团)股份有限公司

Dates

Publication Date: 20260512
Application Date: 20260330

Claims (10)

1. An aerial repair method for a double-box girder shore bridge trolley frame, wherein the trolley frame is suspended below a shore bridge machine room, and the aerial repair method is characterized by comprising the following steps: A plurality of first lifting lugs are arranged on the top of the trolley frame, and a plurality of second lifting lugs are arranged at the bottom of the machine room and at positions corresponding to the first lifting lugs; A first flexible adjusting piece is connected between the corresponding first lifting lug and the second lifting lug, the trolley frame is lifted upwards to be separated from a trolley running track by operating the first flexible adjusting piece, and the gesture of the trolley frame is adjusted to a preset state; And a rigid support piece is arranged between the trolley frame and the machine room, and two ends of the rigid support piece are respectively and fixedly connected with the trolley frame and the machine room so as to maintain the posture of the trolley frame after adjustment.
2. The method for repairing a double-girder shore bridge trolley frame in the air according to claim 1, wherein: the rigid support piece is a steel pipe, and two ends of the steel pipe are welded and fixed with the top of the trolley frame and the bottom of the machine room respectively.
3. The method for repairing a double-girder shore bridge trolley frame in the air according to claim 1, wherein: And before the second lifting lug and the rigid support piece are installed, reinforcing ribs are arranged at the corresponding installation positions of the bottom of the machine room.
4. The method for aerial repair of a double girder shore bridge trolley frame of claim 1, further comprising: At least two third lifting lugs are respectively arranged on the steel structures at two sides of the crack of the trolley frame structure, a transverse second flexible adjusting piece is connected between the two corresponding third lifting lugs, and transverse pulling force is applied by operating the second flexible adjusting piece, so that the steel structures at two sides of the crack are mutually close to reduce the crack.
5. The method for repairing the double-girder shore bridge trolley frame in the air according to claim 4, wherein the method comprises the following steps: The first flexible adjusting piece and the second flexible adjusting piece are both chain blocks.
6. The method for aerial repair of a double girder shore bridge trolley frame of claim 1, further comprising: a third flexible adjusting piece which is vertically arranged is adopted to stretch and correct the downward concave deformation position on the steel structure of the trolley frame; and the upward bulge deformation position on the steel structure of the trolley frame is corrected by downward jacking through a vertical jacking component.
7. The method for repairing the double-girder shore bridge trolley frame in the air according to claim 6, wherein the method comprises the following steps: the third flexible adjusting piece is a chain block, and the vertical jacking component is a jack matched with a rigid ejector rod.
8. The method for aerial repair of a double girder shore bridge trolley frame of claim 1, further comprising: And a plurality of fourth lifting lugs are arranged around the steel structure of the local distortion deformation region of the trolley frame, a plurality of fourth flexible adjusting parts are connected between the fourth lifting lugs, and a multidimensional force system is formed to adjust the steel structure form of the deformation region by respectively operating the fourth flexible adjusting parts.
9. The method for aerial repair of a double girder shore bridge trolley frame of claim 1, further comprising: and installing a clamping code at the staggered edge position of the butt welding seam of the steel structure of the trolley frame, inserting a wedge block into the clamping code, and driving the clamping code to generate relative displacement by knocking the wedge block so as to adjust the staggered edge amount of the staggered edge position.
10. The method for aerial repair of a double girder shore bridge trolley frame of claim 1, further comprising: after the deformation of each deformation part of the trolley frame is adjusted to a preset range, and before welding repair, welding clamping codes are arranged at the position to be repaired so as to fix the corrected structural form.

Description

Aerial repair method for double-box girder shore bridge trolley frame Technical Field The invention relates to the field of repair of cracks of a quay crane trolley frame, in particular to an aerial repair method of a double-box-beam quay crane trolley frame. Background With the increase of service life of port machine cranes, the metal structures of the trolleys of some ports can deform, crack, open, bulge and warp to different degrees, and the problems of part damage or structural deformation, cracking and the like can occur to different degrees. The repair of the trolley is therefore a routine task for routine maintenance of port machinery cranes. However, the trolley of the double-box Liang An bridge is suspended in the air, and a worker cannot construct in the air and does not have a stress point for lifting, adjusting and other operations on the trolley, so that the repairing work of many trolleys cannot construct in the air, and the trolley frame is required to be suspended to the ground by a large-sized automobile crane or a floating crane for operation. The traditional repairing method has the following technical defects: The repair operation depends on heavy equipment such as a large-scale automobile crane or a floating crane, the allocation of the equipment is limited by factors such as a construction period, a site, weather and the like, and the construction flexibility is poor. The trolley frame needs to be lifted, repaired on the ground, lifted again and reset and other links, the construction flow is complex, the period is prolonged, and meanwhile, the renting and using costs of large-scale equipment are high. After the trolley frame is hung on the ground, a wharf operation area or a coastline area is required to be occupied for restoration, so that site resources are tense, and the normal production operation of a port is greatly influenced. The large-scale hoisting operation itself has higher security risk, and the multiple handling of dolly has increased the possibility of equipment damage. Disclosure of Invention The following presents a simplified summary of one or more aspects in order to provide a basic understanding of such aspects. This summary is not an extensive overview of all contemplated aspects, and is intended to neither identify key or critical elements of all aspects nor delineate the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form as a prelude to the more detailed description that is presented later. The invention aims to provide an aerial repair method for a double-box girder shore bridge trolley frame, which can solve the problem that the trolley frame cannot be repaired in the air due to the fact that the trolley frame is suspended at a stress-free point. Embodiments of the invention may be implemented as follows: The embodiment of the invention provides an aerial repair method for a double-box girder shore bridge trolley frame, wherein the trolley frame is suspended below a shore bridge machine room and comprises the following steps: A plurality of first lifting lugs are arranged on the top of the trolley frame, and a plurality of second lifting lugs are arranged at the bottom of the machine room and at positions corresponding to the first lifting lugs; A first flexible adjusting piece is connected between the corresponding first lifting lug and the second lifting lug, the trolley frame is lifted upwards to be separated from a trolley running track by operating the first flexible adjusting piece, and the gesture of the trolley frame is adjusted to a preset state; And a rigid support piece is arranged between the trolley frame and the machine room, and two ends of the rigid support piece are respectively and fixedly connected with the trolley frame and the machine room so as to maintain the posture of the trolley frame after adjustment. In addition, the air repair method of the double-box girder shore bridge trolley frame provided by the embodiment of the invention can also have the following additional technical characteristics: optionally, the rigid support piece is a steel pipe, and two ends of the steel pipe are welded and fixed with the top of the trolley frame and the bottom of the machine room respectively. Optionally, the second lifting lug is arranged at a position with a reinforcing rib plate on the back surface of the bottom of the machine room, and the corresponding installation position of the bottom of the machine room is subjected to reinforcing rib treatment before the second lifting lug and the rigid supporting piece are arranged. Optionally, the aerial repair method of the double-box girder shore bridge trolley frame further comprises the following steps: At least two third lifting lugs are respectively arranged on the steel structures at two sides of the crack of the trolley frame structure, a transverse second flexible adjusting piece is connected between the two corresponding third