CN-122013676-A - Bridge girder erection machine for precast beam lifting construction and construction method

CN122013676ACN 122013676 ACN122013676 ACN 122013676ACN-122013676-A

Abstract

The invention relates to the technical field of bridge erecting machines, and particularly discloses a bridge erecting machine for precast beam lifting construction and a construction method thereof, wherein the bridge erecting machine comprises a truss and crown block components, a sliding track is fixed on the truss, the crown block components longitudinally move along the sliding track, the crown block components are provided with two groups, the crown block components of the two groups are provided with lifting mechanisms and stabilizing components, the stabilizing components are arranged below the crown block components and between the trusses, the stabilizing components are in sliding connection with the crown block components, and the stabilizing components are kept stable and do not shake under the limit of the crown block components; according to the bridge girder erection machine for the precast beam lifting construction and the construction method, when the precast beam is installed, the two groups of stabilizing components are respectively connected with the front end and the rear end of the precast beam, the stabilizing components and the precast beam are lifted through the lifting mechanism, the precast beam and the stabilizing components synchronously move, and in the moving installation process of the precast beam, the stabilizing components limit the precast beam so as to avoid prefabrication Liang Huangdong.

Inventors

ZENG WEI
Lv Qingyu
TANG ZHIHONG
LI ZHIGUO
CAI XIAOSI
LIAO YI
HUANG XUSHENG
PAN CHANGSHENG
ZHOU XIHAI
HUANG YUAN
WANG XUYANG
BAI YONGLIANG
LI ZHAO
ZHAO HUITAO
ZHANG HANZHAO
JIA WENBO

Assignees

保利长大工程有限公司

Dates

Publication Date: 20260512
Application Date: 20260413

Claims (10)

1. The utility model provides a bridge girder erection machine for precast beam lifting construction, includes overhead traveling crane frame (21), crossbeam (22) and elevating system (3), overhead traveling crane frame (21) and truss (1) sliding fit, elevating system (3) set up on overhead traveling crane frame (21), a serial communication port, still include stabilizing assembly (4) and fixed subassembly (5), stabilizing assembly (4) are including spacing post (41) and stabilizing frame (42), spacing post (41) run through crossbeam (22) and with crossbeam (22) vertical sliding fit, stabilizing frame (42) are fixed in spacing post (41) lower extreme and are used for connecting precast beam (6), elevating system (3) and stabilizing frame (42) transmission are connected for drive stabilizing frame (42) and spacing post (41) vertical movement, fixed subassembly (5) are including regulating part (51), conflict head (52) and clamp plate (53), regulating part (51) set up on overhead traveling crane frame (21), the bottom of regulating part (51) is located to conflict head (52), regulating part (51) are used for driving and are propped contact (52) vertical slip and are located on regulating part (53) and are fixed in spacing post (41); The crane frame (21) drives the stabilizing frame (42) to slide along the truss (1), the limiting columns (41) limit the precast beams (6) to shake, the stabilizing frame (42) moves downwards to drive the pressing plate (53) to squeeze the adjusting piece (51), the adjusting piece (51) pushes the abutting contact (52) to abut against the truss (1), and then the crane frame (21) is limited, so that the crane frame (21) and the truss (1) are relatively fixed.
2. The bridge girder erection machine for lifting construction of precast beams according to claim 1, wherein the stabilizing assembly (4) further comprises a positioning column (43) and a top plate (44), the positioning column (43) is arranged below the stabilizing frame (42), one end, far away from the stabilizing frame (42), of the positioning column (43) is provided with a fixing groove (431), a fixing shaft matched with the fixing groove (431) is arranged on the top plate (44), a preformed hole corresponding to the positioning column (43) is arranged on the precast beam (6), and when the stabilizing frame (42) is connected with the precast beam (6), the positioning column (43) penetrates through the preformed hole, and the fixing shaft is embedded into the fixing groove (431) to enable the stabilizing frame (42) to be connected with the precast beam (6).
3. The bridge girder erection machine for precast beam lifting construction according to claim 1, wherein the adjusting member (51) comprises an elastic member (511) and an elastic telescopic rod (512), the elastic telescopic rod (512) is arranged on the crown block frame (21) and is vertically and slidably connected with the crown block frame (21) and the cross beam (22), the elastic telescopic rod (512) penetrates through the crown block frame (21) and the cross beam (22) and extends to the outer side of the cross beam (22), one end of the elastic member (511) is connected with the elastic telescopic rod (512), the other end of the elastic member is connected with the crown block frame (21), the elastic coefficient of the elastic telescopic rod (512) is larger than that of the elastic member (511), and when the pressing plate (53) downwardly presses the elastic telescopic rod (512), the elastic telescopic rod (512) overcomes the elastic force of the elastic member (511) to drive the abutting contact (52) to move downwards.
4. The bridge girder erection machine for precast beam lifting construction according to claim 2, wherein a T-shaped groove (422) is provided in the stabilizer (42) in the left-right direction, and the upper portion of the positioning column (43) is provided as a T-shaped block adapted to the T-shaped groove (422).
5. The bridge girder erection machine for precast beam lifting construction according to claim 4, wherein two positioning columns (43) are arranged, two driving pieces (423) are arranged on the stabilizing frame (42), the two driving pieces (423) are fixedly arranged at the left end and the right end of the stabilizing frame (42), one end of each driving piece (423) is fixedly connected with the positioning column (43), and the driving pieces (423) are used for controlling the positioning column (43) to slide left and right.
6. The bridge girder erection machine for lifting construction of precast girders according to claim 4, wherein the diameter of the positioning column (43) is smaller than the diameter of the reserved hole.
7. The bridge girder erection machine for precast beam lifting construction according to claim 6, wherein the stabilizing assembly (4) further comprises a limiting plug (45), the limiting plug (45) is cylindrical, the limiting plug (45) is divided into two parts along the axial direction, when the two parts are combined together, a through groove matched with the positioning column (43) is formed in the limiting plug (45), the limiting plug (45) is sleeved on the positioning column (43) and used for fixing the top plate (44), and is embedded into the reserved hole to fill a gap between the reserved hole and the positioning column (43).
8. The bridge girder erection machine for lifting construction of precast beams according to claim 7, wherein the stopper (45) is made of rubber material, and the diameter of the upper portion of the stopper (45) is gradually reduced in a vertically upward direction.
9. The bridge girder erection machine for precast beam lifting construction according to claim 1, wherein the lifting mechanism (3) comprises a lifting motor (31), a winding wheel (32) and a steel wire rope (33), the lifting motor (31) is fixedly arranged on the overhead crane frame (21), the winding wheel (32) is arranged right above the stabilizing frame (42) and is rotationally connected with the overhead crane frame (21), the output end of the lifting motor (31) is in transmission connection with the winding wheel (32), the steel wire rope (33) is wound on the winding wheel (32), and the extending end of the steel wire rope (33) is connected with the stabilizing frame (42).
10. A method of lifting a precast beam, a bridge girder erection machine for lifting a precast beam according to any one of claims 1 to 9, comprising the steps of: s1, a transport vehicle transports a precast beam (6) to the position right below a bridge girder erection machine, and controls a crown block frame (21) to move back and forth along a truss (1) so that two groups of crown block frames (21) respectively move to the front end and the rear end of the precast beam (6); s2, controlling the lifting mechanism (3) to drive the stabilizing frame (42) to move downwards, stably descending the stabilizing frame (42) to the connecting position of the precast beam (6) under the vertical limiting action of the limiting column (41), avoiding the precast beam (6) from shaking, synchronously, driving the abutting head (52) to abut against the truss (1) through the pressing plate (53), and finishing the fixation of the crown block frame (21); s3, connecting the stabilizing frame (42) with the precast beam (6); s4, the lifting mechanism (3) reversely operates to drive the stabilizing frame (42) and the precast beam (6) to lift upwards until the stabilizing frame and the precast beam are separated from the transport vehicle; s5, controlling the crown block frame (21) to drive the precast beam (6) to transport to the installation position; S6, after the crown block frame (21) moves to the upper portion of the installation position, stopping the crane, and the lifting mechanism (3) lowers the stabilizing frame (42) to drive the precast beam (6) to be close to the bridge pier and fall to the preset installation position.

Description

Bridge girder erection machine for precast beam lifting construction and construction method Technical Field The invention relates to the technical field of bridge girder erection machines, in particular to a bridge girder erection machine for precast girder lifting construction and a construction method. Background Along with the three-dimensional development of road network space, more bridges are crossing railways, highways, channels, urban overpasses and important pipelines, and bridge construction methods for installing bridge girder erection by adopting factory precast girders and on-site bridge girder erection are also a trend. The bridge girder erection machine is used as large-scale special equipment in construction, and becomes an indispensable key equipment in construction of expressway bridges, and in the prior art, the bridge girder erection machine consists of a truss, a crown block and other mechanisms, and when a precast beam is installed, the bridge girder erection machine is installed on a pier through supporting legs, a hoist on the crown block lifts the precast beam, and the crown block slides on the truss to move the precast beam to an installation position for installation. The invention discloses a forward bracket transporting device of a bridge girder erection machine, which comprises a main body, a first wheel frame, a first linear driving device, a second lifting lug, a first linear driving device and a second lifting lug, wherein the main body is provided with a supporting part, the supporting part is arranged between a pier top block and a pier body, the first wheel frame is rotatably arranged on the main body, the first wheel frame is rotatably arranged on the first wheel frame, one end of the first linear driving device is hinged on the main body, the other end of the first linear driving device is hinged with the middle part of the first wheel frame, the first linear driving device drives the first wheel frame to swing along a hinge point and is used for driving the first wheel frame to contact with or be separated from the top of the pier body, one end of the main body is supported by the first wheel frame, the first lifting lug is arranged on the main body, the second lifting lug is arranged on one side of the supporting part in a rotating mode, the second lifting lug is movably arranged on the main body, the second lifting lug is arranged on one side of the first lifting lug, one side of the first lifting lug is close to the supporting part, the second lifting lug is hinged with the middle part, the second linear driving device is arranged on the second end of the second wheel frame is hinged with the second lifting lug, the second end of the second lifting lug is arranged on the second side of the second lifting lug is hinged with the other end of the supporting part, the second end is hinged with the second end of the first wheel frame, the first wheel frame is arranged on the second linear lifting lug is hinged with the other end, and is arranged on the second end, and the second end is hinged with the second top body, and is arranged between the first end is in a second linear lifting lug is. In the technology, the crown block on the bridge girder erection machine can shake in the air when being transported to the installation position after being lifted in the process of lifting and transporting the prefabricated bridge, so that the construction risk is increased, and particularly in the process of splicing the bridge segments, any tiny shake can cause segment displacement and affect the splicing precision. Disclosure of Invention The invention provides a bridge girder erection machine for precast beam lifting construction and a construction method, and aims to solve the problems of shaking and complicated installation mode in the process of installing precast beams in the related art. The bridge girder erection machine for the precast beam lifting construction comprises a crown block frame, a cross beam, a lifting mechanism, a stabilizing assembly and a fixing assembly, wherein the crown block frame is in sliding fit with a truss, the lifting mechanism is arranged on the crown block frame, the stabilizing assembly comprises a limiting column and a stabilizing frame, the limiting column penetrates through the cross beam and is in vertical sliding fit with the cross beam, the stabilizing frame is fixed at the lower end of the limiting column and is used for connecting the precast beam, the lifting mechanism is in transmission connection with the stabilizing frame and is used for driving the stabilizing frame and the limiting column to vertically move, the fixing assembly comprises an adjusting piece, a contact and a pressing plate, the adjusting piece is arranged on the crown block frame, the contact is arranged at the bottom end of the adjusting piece, the adjusting piece is used for driving the contact to vertically slide, and the pressing plate is fixedly connected w