CN110273367B

CN110273367B - Method for erecting beam at low station

Info

Publication number: CN110273367B
Application number: CN201810221577.3A
Authority: CN
Inventors: 王治斌; 谌启发; 梁志新; 王嵽显; 桂婞; 蒋中明; 万鹏; 罗九林; 贾筱煜; 陆慧; 刘德兵; 王慨慷
Original assignee: China Railway 11th Bureau Group Co Ltd; China Railway Fifth Survey and Design Institute Group Co Ltd
Current assignee: China Railway 11th Bureau Group Co Ltd; China Railway Fifth Survey and Design Institute Group Co Ltd
Priority date: 2018-03-17
Filing date: 2018-03-17
Publication date: 2021-06-25
Anticipated expiration: 2038-03-17
Also published as: CN110273367A

Abstract

The invention relates to the technical field of bridge erection, in particular to a method for erecting a beam at a low station. The method for erecting the beam at the low station can utilize the beam guide machine at the low station to be matched with the beam transporting machine to move, specifically, the beam transporting machine is driven to move by the multifunctional trolley, and the beam guide machine and the beam transporting machine move on the beam erecting station by utilizing the front guide beam supporting leg, the middle guide beam supporting leg and the rear guide beam supporting leg of the beam guide machine and the telescopic beam transporting supporting leg of the beam transporting machine, so that the beam erecting work can be simply and efficiently completed.

Description

Method for erecting beam at low station

Technical Field

The invention relates to the technical field of bridge erection, in particular to a method for erecting a beam at a low station.

Background

The transporting and erecting integrated machine can be used for hoisting the concrete box girder of the passenger special line in a concrete beam yard and erecting the concrete box girder at a bridge position. The existing beam transporting and erecting integrated machine mainly comprises a beam transporting machine and a beam guiding machine, wherein the beam transporting machine can also hoist the beam guiding machine to transfer to a construction site and can also hoist a concrete box girder to pass through a double-line tunnel of a passenger special line.

Compared with the traditional transporting and erecting equipment, the transporting and erecting all-in-one machine has the advantages of high construction speed, flexibility, capability of realizing zero-distance bridging of a tunnel portal, no need of disassembling any part for the tunnel portal bridging connected with bridges and tunnels in mountainous areas, no need of auxiliary machinery, no need of excessive labor and the like. However, the existing transporting and erecting integrated machine has the problems that the method for erecting the beam is complex and the efficiency is low when the low-position beam erecting is carried out at the tunnel exit because the beam guide machine cannot adjust the height and the low position.

Therefore, in view of the above disadvantages, it is desirable to provide a method for simply and quickly realizing low-position girder erection.

Disclosure of Invention

Technical problem to be solved

The invention aims to solve the technical problems that the method is complex and the efficiency is low when a beam is erected at the exit of a tunnel in the prior art.

(II) technical scheme

In order to solve the technical problem, the invention provides a method for erecting a beam at a low position, which is applied to an integrated transporting and erecting machine, wherein the integrated transporting and erecting machine comprises a beam guiding machine and a beam transporting machine, and the method comprises the following steps:

s1, mounting the beam guide machine on a beam erecting station, and adjusting the height of a main beam of the guide beam of the beam guide machine to enable the beam guide machine to be in a low position station;

s2, moving a front walking system of the beam conveying machine to a supporting platform of a multifunctional trolley of the beam guiding machine, and arranging a trolley supporting frame between the supporting platform and the front walking system;

s3, the multifunctional trolley drives the girder transporting machine to move forwards along the main girder of the guide girder, so that a box girder hung by the girder transporting machine is positioned at a girder falling station, and telescopic girder transporting support legs of the girder transporting machine are supported on a second pier to be erected close to the bridge floor;

s4, driving the main girder of the guide beam to move, and enabling the front end of the main girder of the guide beam to be positioned above a fourth pier to be erected, which is close to the bridge floor;

s5, connecting a trolley connecting mechanism of the beam conveying machine with a trolley suspension structure of the multifunctional trolley, and enabling a middle guide beam supporting leg of the beam guiding machine to move forwards and be supported on a third pier to be erected;

s6, driving the main beam of the guide beam to move, enabling the rear end of the main beam of the guide beam to completely leave the beam erecting station, and enabling the rear guide beam supporting leg of the main beam of the guide beam to be supported on the second bridge pier to be erected

S7, moving forward a front guide beam leg of the guide beam machine, and supporting the front guide beam leg on a fourth bridge pier to be erected;

and S8, lowering the box girder by the girder transporting machine, and erecting the box girder at a girder erecting station.

Furthermore, the method for driving the main beam of the guide beam to move is to drive the main beam of the guide beam to move along the length direction of the main beam of the guide beam by using the multifunctional trolley of the guide beam machine.

Further, the method for moving the middle guide beam leg of the guide beam machine forwards and supporting the middle guide beam leg on the third bridge pier to be erected comprises the following steps:

shortening the length of the middle guide beam supporting leg to enable the middle guide beam supporting leg to leave a second pier to be erected;

the middle guide beam supporting leg moves forwards along the guide beam main beam to the position above a third pier to be erected;

the length of the middle guide beam supporting leg is extended, so that the middle guide beam supporting leg is supported on a third pier to be erected.

Further, the method for moving the front guide beam leg of the guide beam machine forwards and supporting the front guide beam leg on the fourth bridge pier to be erected comprises the following steps:

shortening the length of the front guide beam supporting leg to enable the front guide beam supporting leg to leave a third pier to be erected;

the front guide beam supporting leg moves forwards along the guide beam main beam to the position above a fourth bridge pier to be erected;

the length of the front guide beam supporting leg is extended, so that the front guide beam supporting leg is supported on a fourth pier to be erected.

Further, the beam falling station is positioned above the beam erecting station.

(III) advantageous effects

Compared with the prior art, the technical scheme of the invention has the following advantages:

the method for erecting the beam at the low station can utilize the beam guide machine at the low station to be matched with the beam transporting machine to move, specifically, the beam transporting machine is driven to move by the multifunctional trolley, and the beam guide machine and the beam transporting machine move on the beam erecting station by utilizing the front guide beam supporting leg, the middle guide beam supporting leg and the rear guide beam supporting leg of the beam guide machine and the telescopic beam transporting supporting leg of the beam transporting machine, so that the beam erecting work can be simply and efficiently completed.

Drawings

FIG. 1 is a schematic structural diagram of a rack transport integrated machine applied to an embodiment of the invention;

FIG. 2 is a schematic structural diagram of a beam transporting machine of the frame transporting integrated machine according to the embodiment of the invention;

FIG. 3 is a front view of a front walking system of the girder transporting machine according to the embodiment of the present invention;

FIG. 4 is a left side view of a front walking system of the girder transporting machine according to the embodiment of the present invention;

FIG. 5 is a schematic structural view of a telescopic girder supporting leg of the girder transporting machine according to the embodiment of the invention;

FIG. 6 is a schematic structural diagram of a beam guide machine of the frame transporting and integrating machine of the embodiment of the invention;

FIG. 7 is a schematic structural diagram of a center sill leg of a girder guide machine according to an embodiment of the present invention;

FIG. 8 is a left side view of a front spar leg of a spar guide according to embodiments of the present invention;

FIG. 9 is a front view of a front spar leg of a spar guide according to embodiments of the present invention;

FIG. 10 is a left side view of a rear guide beam leg of a guide beam machine according to an embodiment of the present invention;

FIG. 11 is a front view of a rear guide beam leg of a guide beam machine according to an embodiment of the present invention;

fig. 12 is a schematic structural view of a jack stand of the girder guide machine according to the embodiment of the present invention;

fig. 13 is a schematic structural view of a multifunctional trolley of the girder guide machine according to the embodiment of the invention;

FIG. 14 is a schematic view of the structure of the cart of the multi-purpose trolley according to the embodiment of the present invention;

fig. 15 is a schematic structural view of a carriage suspension mechanism of the multi-function carriage according to the embodiment of the present invention;

fig. 16 is a schematic structural view of a third cart of the multi-function cart according to the embodiment of the present invention;

FIG. 17 is a flow chart of a method of low station girder erection in accordance with an embodiment of the present invention;

fig. 18-24 are flow charts illustrating the operation of a method for erecting a beam in a lower station according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

In the embodiment of the present invention, the girder erection station is a position near the girder transporter 200 between the first pier to be erected and the second pier to be erected, and the girder transporter 200 and the girder guide 100 cooperate to erect the box girder at the girder erection station (i.e., between the first pier to be erected and the second pier to be erected).

The method for erecting the beam at the low station is applied to the integrated transporting and erecting machine.

First, referring to fig. 1 to 16, a specific structure of a rack transport all-in-one machine to which the method of the embodiment of the present invention is applied will be described.

In the embodiment of the present invention, as shown in fig. 1, the all-in-one transportation and erection machine includes a girder guiding machine 100 and a girder transportation machine 200, wherein the girder transportation machine 200 is used for lifting the girder guiding machine 100 and a concrete box girder (hereinafter referred to as a "box girder"), and the girder guiding machine 100 assists the girder transportation machine 200 to cooperate with a via hole frame girder in bridge erection. Specifically, the girder transport 200 is capable of transporting the girder guide 100 and, in cooperation with the girder guide 100, leaving the girder guide 100 in the girder erection station. The beam transporting machine 200 can also transport the box beam to and from the beam yard and the beam erecting station, and complete the erection of the box beam in cooperation with the beam guiding machine 100.

As shown in fig. 2, the girder transporting machine 200 includes a girder transporting main girder 210, a front walking system 220, a rear walking system 230, a hoist lifting structure 260, and telescopic girder transporting legs 240. The girder 210 is a cross beam of a box structure, the front walking system 220 and the rear walking system 230 are respectively and fixedly connected to two ends of the girder 210, the front walking system 220 is fixed at the front end of the girder 210, and the rear walking system 230 is fixed at the rear end of the girder 210. The telescopic girder supporting legs 240 are disposed on the bottom surface of the girder 210, and the telescopic girder supporting legs 240 are disposed between the front traveling vehicle system and the rear traveling vehicle system and are close to the front traveling vehicle system. The number of the lifting structures 260 is two, and the two lifting structures are respectively fixed on the bottom surface of the main girder 210 of the transport beam and are positioned between the telescopic support legs 240 of the transport beam and the rear traveling system 230. The distance between the two hoist lifting structures 260 is the same as the length of the box girder. The lifting mechanism is used for lifting the box girder, and the front walking system 220 and the rear walking system 230 are used for driving the girder transporting main girder 210 and other structures of the girder transporting machine 200 to synchronously move, so that the girder transporting machine 200 can transport the girder guiding machine 100 and the box girder. When the girder transporting machine 200 needs to be fixed, the telescopic girder legs 240 can be supported on the bottom surface to fix the position of the girder transporting machine 200.

It should be noted that, in the embodiment of the present invention, the front end of the girder transporting main girder 210 and the front end of the girder transporting machine 200 are the same end, specifically, the end of the girder transporting machine 200 close to the girder guiding machine 100 or connected to the girder guiding machine 100 during the bridge erecting work; the rear end of the girder transporting main beam 210 is the same as the rear end of the girder transporting machine 200, and specifically, the rear end of the girder transporting machine 200 is far away from the girder guiding machine 100 or is not connected with the girder guiding machine 100 when the bridge erecting work is performed.

Specifically, each lifting structure 260 includes two lifting units, and the two lifting units are symmetrically fixed to two sides of the girder 210. Each lifting structure 260 is used for being connected with the front end and the rear end of the box girder and lifting the box girder so as to facilitate the transportation of the box girder.

The bottom surface of the front end of the main girder 210 of the transport beam is provided with a step surface which is inwards concave, and the front walking system 220 is fixed on the step surface. Because the front end of the girder transporting main beam 210 is provided with the step surface, the collision or friction between the bottom surface of the front end of the girder transporting main beam 210 and the rear end of the girder guiding main beam 110 can be prevented when the girder guiding main beam 110 is connected with the girder transporting main beam 210, and the situation that the girder transporting machine 200 cannot transport the girder guiding machine 100 due to the connection between the girder transporting main beam 210 and the girder guiding machine 100 being obstructed can be avoided.

In the embodiment of the present invention, the front crane system and the rear crane system can synchronously drive the main girder 210 to perform a lifting motion, so that the main girder 210 performs a lifting motion in a vertical direction. Specifically, the front walking system 220 includes a front walking bracket 221, and the front walking bracket 221 is connected to the front end of the girder 210 and can drive the girder 210 to move up and down. The front walking system 220 further includes a front walking wheel set 222, wherein the front walking wheel set 222 is disposed at the bottom of the front walking frame 221 and can drive the front walking frame 221 to move up and down. The two front traveling wheel sets 222 are arranged in parallel along the length direction of the girder 210, and the distance between the two front traveling wheel sets 222 is greater than the maximum width of the girder guide 100. The rear traveling system 230 includes a rear traveling bracket, which is connected to the rear end of the girder 210 and can drive the girder 210 to perform a lifting motion. The rear traveling system 230 further includes a rear traveling wheel set disposed at the bottom of the rear traveling bracket and capable of driving the rear traveling bracket to perform a lifting motion. The number of the rear traveling wheel sets is two, the two rear traveling wheel sets are arranged in parallel along the length direction of the girder transporting main beam 210, and the distance between the two rear traveling wheel sets is greater than the maximum width of the girder guiding machine 100.

Since the front traveling system 220 and the rear traveling system 230 have the same structure in the embodiment of the present invention, the front traveling system 220 is described as an example as shown in fig. 3 to 4. The front walking system 220 includes a front walking bracket 221 and two front walking wheel sets 222, wherein the front walking bracket 221 is used for connecting the front walking wheel sets 222 to the lower end of the girder 210, so that the front walking wheel sets 222 can drive the front end of the girder 210 to move. The middle point of the front walking support 221 is fixed at the front end of the girder transporting main beam 210 through the front walking lifting system 223, the front walking lifting system 223 can be a front walking hydraulic cylinder, and the front walking hydraulic cylinder can enable the girder transporting main beam 210 to rise or fall along the vertical direction so as to meet the requirements of different frame beam heights. Meanwhile, the front walking support 221 is arranged along the length direction of the girder transporting main beam 210, and two front walking wheel sets 222 are respectively arranged on two sides of the bottom end of the front walking support 221 along the length direction of the girder transporting main beam 210, and the distance between the two front walking wheel sets 222 is greater than the maximum width of the girder guiding machine 100, so that the girder guiding machine 100 can pass through the two front walking wheel sets 222, thereby facilitating the cooperation of the girder transporting machine 200 and the girder guiding machine 100, and enabling the girder guiding machine 100 to move to a girder erecting station or complete the erection of a box girder. The front traveling wheel set 222 is connected to the bottom of the front traveling bracket 221 through a front wheel hydraulic cylinder, and can drive the front traveling bracket 221 to perform lifting motion, and further drive the girder 210 to lift or lower.

The two front traveling wheel sets 222 have the same structure and respectively comprise a front wheel bracket 224 which is vertically arranged, and a plurality of front traveling rollers 225 are respectively and uniformly distributed at the bottom of each front wheel bracket 224. Each front walking roller 225 is connected to the front wheel bracket 224 through a front steering mechanism. Specifically, the front steering mechanism is vertically provided with a front steering shaft, the front steering shaft can rotate along the axis of the front steering shaft, and the front walking roller 225 is fixed at the bottom end of the front steering shaft, so that the front steering shaft can drive the front walking roller 225 to rotate by taking the axis of the front steering shaft as a shaft, and the adjustment of the walking direction of the front walking roller 225 is completed. The front travel roller 225 is further correspondingly provided with a front travel steering system 226, a front travel power system and a front travel braking system, the front travel steering system 226 can drive the front steering shaft to rotate so as to change the travel direction of the front travel roller 225, the front travel power system can drive the front travel roller 225 to roll forwards or backwards, and the front travel braking system can control the front travel roller 225 to stop moving.

As shown in fig. 5, the telescoping spar legs 240 are capable of being lengthened or shortened along their length. Specifically, the telescopic girder supporting legs 240 include primary girder supporting legs 241 and secondary girder supporting legs 242, the primary girder supporting legs 241 are connected with the girder 210, and the secondary girder supporting legs 242 are slidably connected with the primary girder supporting legs 241, so that the secondary girder supporting legs 242 can move relative to the primary girder supporting legs 241 along the length direction of the primary girder supporting legs 241, thereby realizing the position fixing of the girder transporting machine 200 by using the telescopic girder supporting legs 240.

The telescopic girder transporting support leg 240 further comprises a girder transporting support leg cross beam 243, the girder transporting support leg cross beam 243 is used for connecting the first-level girder transporting support leg 241 with the girder transporting main beam 210, the girder transporting support leg cross beam 243 is horizontally arranged and connected with the girder transporting main beam 210, and the first-level girder transporting support leg 241 is fixed at two ends of the girder transporting support leg cross beam 243.

The middle point of the beam transporting support leg cross beam 243 is fixed on the beam transporting main beam 210, the beam transporting support leg cross beam 243 is perpendicular to the beam transporting main beam 210, two ends of the beam transporting support leg cross beam 243 are respectively connected with the first-level beam transporting support legs 241, and the first-level beam transporting support legs 241 are respectively perpendicular to the beam transporting support leg cross beam 243. The second-stage girder transporting support legs 242 penetrate through the first-stage girder transporting support legs 241, the second-stage girder transporting support legs 242 are connected with the girder transporting support legs through hydraulic oil cylinders, and the second-stage girder transporting support legs 242 are controlled to move along the length direction of the first-stage girder transporting support legs 241.

The telescopic leg 240 further includes a leg connecting system 244, and the leg connecting system 244 is a tripod structure and is respectively and fixedly connected to the first-stage girder leg 241, the second-stage girder leg 242, and the girder leg cross member 243. The beam leg connection system functions to support and secure the primary girder leg 241, the secondary girder leg 242, and the girder leg cross member 243.

The telescopic girder transport leg 240 further comprises a girder transport spherical hinge base 245, and the girder transport spherical hinge base 245 is fixed at the bottom of the secondary girder transport leg 242.

In order to enable the telescopic girder legs 240 to adapt to a slope, in the embodiment of the present invention, the top ends of the telescopic girder legs 240 are rotatably connected to the girder 210 so that the telescopic girder legs 240 swing under the girder 210 along the length direction of the girder 210. And a beam inclined support beam 246 is arranged between the telescopic beam support leg 240 and the beam main beam 210.

In one embodiment of the present invention, the transfer beam support diagonal beam 246 is fixedly connected to the transfer beam main beam 210, the transfer beam support diagonal beam 246 is hingedly connected to the telescoping transfer beam legs 240, and the transfer beam support diagonal beam 246 can be telescoped along its length to change the angle between the telescoping transfer beam legs 240 and the transfer beam main beam 210. Specifically, the bottom end of the beam transporting inclined support beam 246 is hinged to the lower end of the secondary beam transporting support leg 242, the beam transporting inclined support beam 246 is fixedly connected with the beam transporting main beam 210 through a beam transporting inclined hydraulic cylinder, and the hydraulic cylinder can drive the beam transporting inclined support beam 246 to perform telescopic movement, so that the angle between the telescopic beam transporting support leg 240 and the beam transporting main beam 210 can be changed.

In another embodiment of the present invention, one end of the diagonal support beam 246 is hingedly connected to the main girder 210, the telescopic support leg 240 is provided with a plurality of connection points, and the other end of the diagonal support beam 246 can be connected to different connection points to change the angle between the telescopic support leg 240 and the main girder 210. Specifically, the primary girder supporting leg 241 and the secondary girder supporting leg 242 of the telescopic girder supporting leg 240 are provided with a plurality of connection points along the length direction thereof, and the girder tilting supporting beam 246 is connected with different connection points so as to change the angle between the telescopic girder supporting leg 240 and the girder 210. Wherein, the connection point may be a slot, and the cross beam support beam 246 is inserted into the slot to connect with different slots.

As shown in fig. 2, the girder transporting machine 200 further includes a trolley attachment mechanism 250, and the trolley attachment mechanism 250 is fixed to the lower surface of the girder main beam 210 and is located between the front trolley system and the telescopic girder legs 240 for connecting with a trolley of the girder guide machine 100 to transport and fix the position of the girder guide machine 100. Specifically, the trolley connecting mechanism 250 includes a trolley connecting portion 251 and a girder connecting portion 252, the trolley connecting portion 251 is connected to the trolley suspending mechanism 154, and the girder connecting portion 252 connects the trolley connecting portion 251 to the girder 210. The girder connecting portion 252 is fixed to the bottom of the girder 210, and specifically, the girder connecting portion 252 may be connected to the girder 210 by a girder connecting hydraulic cylinder and may perform a telescopic motion in a vertical direction. The trolley connecting part 251 is movably disposed at the bottom of the girder connecting part 252, and specifically, the trolley connecting part 251 may be connected to the girder connecting part 252 by a trolley connecting hydraulic cylinder and may be movable in the length direction of the girder 210. Therefore, the girder connecting part 252 can move the trolley connecting part 251 up and down to adjust the height of the trolley connecting part 251, and the trolley connecting part 251 can move back and forth along the girder 210 to connect or disconnect with the multi-function trolley 150.

As shown in fig. 6, the girder guide machine 100 includes a girder guide 110, a front girder leg 120, a middle girder leg 130, and a rear girder leg 140, and the front girder leg 120, the middle girder leg 130, and the rear girder leg 140 are respectively disposed on the girder guide 110. The front girder leg 120 and the middle girder leg 130 are respectively movable on the guide girder 110 along the length direction of the guide girder 110. And the front guide leg 120 is always vertically disposed to be able to extend or retract to the bottom surface of the guide main beam 110. When the front girder leg 120 extends out of the bottom surface of the main girder 110, the main girder 110 can be supported; when the front girder legs 120 are retracted to the bottom surface of the girder main 110, they can be prevented from obstructing the girder transporting machine 200 from transporting the girder transporting machine 100 by contacting the ground or other obstacles. The middle guide beam support leg 130 may be vertically disposed below the guide beam main beam 110, or may be suspended by the front suspension device 170 at the front end of the guide beam main beam 110 and suspended at the front end of the guide beam main beam 110, and the bottom surface of the middle guide beam support leg 130 is not lower than the bottom surface of the guide beam main beam 110. When the center sill leg 130 is positioned below the center sill main 110, it can support the center sill main 110; when the center sill leg 130 is hung from the front end of the center sill main 110, the center sill leg 130 can be prevented from contacting the ground or other obstacles to prevent the girder transporting machine 200 from transporting the girder transporting machine 100. The rear guide leg 140 is rotatably connected to the rear end of the guide main beam 110, and therefore, the rear guide leg 140 can rotate in a vertical plane, so that the rear guide leg 140 can be vertically disposed below the guide main beam 110 or disposed in parallel at the rear end of the guide main beam 110. When the rear guide beam legs 140 are vertically arranged, the guide beam main beam 110 can be supported; when the rear girder legs 140 are horizontally disposed, it is possible to prevent the girder transporting machine 200 from being hindered from transporting the girder transporting machine 100.

It should be noted that, in the embodiment of the present invention, the front end of the main beam 110 of the guide beam and the front end of the beam guiding machine 100 are the same end, specifically, the end of the guide beam machine 100 away from the beam transporting machine 200 or not connected to the beam transporting machine 200 during the bridge erecting work; the rear end of the main girder 110 of the guide beam is the same as the rear end of the guide beam machine 100, specifically, the end of the guide beam machine 100 close to the girder transporting machine 200 or connected with the girder transporting machine 200 during the bridge erecting work.

In the embodiment of the present invention, a front suspension structure is disposed at the front end of the main guide beam 110, a center leg guide rail is disposed along a center line on the bottom surface of the main guide beam 110, the center leg guide rail extends to the bottom surface of the front suspension structure, and the center guide beam leg 130 is connected to the lower portion of the main guide beam 110 through a center wheel system and the center leg guide rail in a matching manner, so that the center guide beam leg 130 is connected to the center leg guide rail, and the center guide beam leg 130 can move along the length direction of the main guide beam 110 under the main guide beam 110 and the front suspension structure. The middle guide beam support legs 130 can slide to the front end of the guide beam main beam 110 and can be finally hung on a front hanging mechanism at the front end of the guide beam main beam 110; the center sill leg 130 can also move to the rear end of the guide main beam 110 and ultimately to a position proximate the rear guide leg 140. In the process of moving the middle guide beam leg 130, since the maximum width thereof is the same as the width of the guide beam main beam 110 and is located right below the guide beam main beam 110, the movement of the front guide beam leg 120 or the multifunctional cart 150 is not hindered, and the movement is not hindered by the front guide beam leg 120 or the multifunctional cart 150.

The front suspension structure comprises a guide beam lifting frame and a winch arranged on the guide beam lifting frame, when the middle guide beam supporting leg 130 moves from the bottom surface of one of the guide beam main beam 110 or the front suspension structure to the junction of the front suspension structure and the guide beam main beam 110 through a middle wheel system, the winch can drive the middle guide beam supporting leg 130 to do ascending or descending movement, so that the middle guide beam supporting leg 130 moves to the bottom surface of the other of the guide beam main beam 110 or the front suspension structure. For example, when the middle girder leg 130 moves along the bottom surface of the main girder 110 to the junction between the front suspension structure and the main girder 110, the winch operates and drives the middle girder leg 130 to perform an ascending motion, so that the middle girder leg 130 can move upward to the guide girder hoisting frame and finally to the front end of the guide girder hoisting frame. When the center sill leg 130 moves in the opposite direction, the principle is the same, and the description thereof is omitted.

As shown in fig. 7, the middle girder leg 130 includes a middle upper column, a middle column 133 and a middle lower column 134 which are connected in sequence from top to bottom in the vertical direction. The middle-middle post 133 is movable in a vertical direction relative to the middle-middle post. The middle lower stud 134 is located at the bottom end of the middle girder leg 130, and the middle lower stud 134 may be flipped over to the bottom surface of the girder main beam 110. Meanwhile, the middle-middle section column 133 and the middle-lower section column 134 can also rotate relative to the middle-middle section column to change the included angle between the middle-middle section column 133 and the middle-lower section column 134 and the main guide beam 110 in the horizontal direction.

Specifically, the middle and upper studs are used to connect with the main guide beam 110, and function to connect the middle guide beam leg 130 with the main guide beam 110. The middle-middle section column 133 is slidably connected with the middle-upper section column, plays a role of supporting the guide beam main beam 110, and is used for bearing the heavy load of the through hole of the beam transporting machine 200. A middle sliding hydraulic oil cylinder which is vertically arranged is arranged between the middle and middle section columns 133 and the middle and middle section columns, so that the middle and middle section columns 133 can move in the vertical direction, the middle and middle section columns 133 can move relative to the middle and middle section columns in the length direction of the middle and middle section columns, the middle guide beam supporting leg 130 can extend or shorten integrally, and the requirements of different lengths of the middle and middle guide beam supporting leg 130 are met.

Meanwhile, the middle and upper studs can drive the middle and

upper studs

133 and 134 to rotate, so that the girder guide machine 100 can be adjusted to be in place according to the specific situation when the curve is bridged. Specifically, the middle and upper joint column includes a middle joint connection portion 131 and a middle joint rotation portion 132, the middle joint connection portion 131 is rotatably connected with the middle joint rotation portion 132, the middle joint connection portion 131 is connected with the guide beam main beam 110, and the middle joint rotation portion 132 is connected with the middle and upper joint column 133. In the embodiment of the present invention, the middle joint connecting portion 131 and the middle rotating portion 132 may be connected by a middle rotating shaft 135.

The middle-lower section column 134 includes two middle-lower section units, each of which is disposed along the width direction of the guide girder main beam 110 and is hinged to the bottom of the middle-lower section column 133. In one embodiment of the present invention, the middle and lower joint units may be hingedly connected to the middle rotating part 132, respectively. The two middle-lower section units can be respectively turned by 90 degrees along the length direction of the guide beam main beam 110 to the bottom surface of the guide beam main beam 110, so that the middle-lower section units have two vertical or horizontal states, namely the middle-lower section units have two states which are vertical or parallel to the guide beam main beam 110 relative to the guide beam main beam 110, so that the whole length of the middle guide beam supporting leg 130 can be further extended or shortened, and the requirements of different beam erecting heights are met.

The middle wheel system comprises a middle guide wheel, a middle reverse hanging wheel and a middle support wheel, wherein the middle guide wheel, the middle reverse hanging wheel and the middle support wheel are respectively arranged at the top of the middle guide beam supporting leg 130, and particularly can be respectively arranged at the top of the middle upper section column.

The middle reverse hanging wheel is used for connecting the middle guide beam supporting leg 130 with the middle supporting leg guide rail, and can play a role in preventing overturning. The middle reverse hanging wheel is connected with a motor to provide power for the middle reverse hanging wheel, so that the middle reverse hanging wheel can drive the middle guide beam supporting leg 130 to move along the middle supporting leg guide rail. The center guide wheels are positioned in the center leg rail in parallel with the bottom surface of the center leg rail, and the diameter of the center guide wheels is the same as the width of the center leg rail, so that the center guide wheels can guide the center guide beam leg 130 to move according to the trajectory of the center leg rail. The middle support wheel is located between the middle-upper column and the bottom surface of the main guide beam 110 to support the main guide beam 110, and can play a role in supporting the main guide beam 110 to longitudinally move through the hole.

As shown in fig. 8-9, the front beam leg 120 includes an embracing mechanism 121, left and right sliding beams 122, and upper and lower sliding columns 123. The front girder leg 120 is movably connected to the front girder 110 by the surrounding mechanism 121, so that the front girder leg 120 can move along the length direction of the front girder 110. The left and right sliding beams 122 are connected to the embracing mechanism 121 so as to be movable in the horizontal direction, and can drive the up-down sliding columns 123 to move in the width direction of the guide beam main beam 110. The up-down sliding columns 123 are provided at both ends of the left and right sliding cross members 122 and can slide in the vertical direction, so that the up-down sliding columns 123 can extend out of or retract into the bottom surface of the guide girder 110. When the up-down sliding column 123 extends out of the bottom surface of the main guide beam 110, the main guide beam 110 can be supported; when the up-down sliding columns 123 retract the bottom surface of the girder 110, it can be prevented from obstructing the girder transporting machine 200 from transporting the girder 100 by contacting the ground or other obstacles.

The front beam leg 120 further includes a front wheel train, and the surrounding mechanism 121 is sleeved on the main beam 110 and movably connected to the main beam 110 through the front wheel train. The front wheel system comprises a front bearing wheel 126, a front travelling wheel 124 and a front reverse hanging wheel 125; the front traveling wheels 124 are disposed between the embracing mechanism 121 and the top surface of the main beam 110, and the front traveling wheels 124 are connected to the driving mechanism for driving the embracing mechanism 121 to move. The front reverse hanging wheel 125 movably connects the hoop mechanism 121 with the main beam 110 to prevent overturning. Flanges are arranged on two sides of the top of the main beam 110 of the guide beam, and the front bearing wheel 126 is arranged between the surrounding mechanism 121 and the bottom surfaces of the flanges to play a bearing role.

The top of the embracing mechanism 121 is provided with an embracing bracket, the left and right sliding beams 122 can be movably arranged in the embracing bracket along the width direction of the guide beam main beam 110 in a penetrating way, and the left and right sliding beams 122 can horizontally move along the width direction of the guide beam main beam 110 through the driving of a front transverse hydraulic oil cylinder, so that the upper and lower sliding columns 123 can synchronously move along the width direction of the guide beam main beam 110, and the beam erecting requirement of a bridge bending section is met.

The up-down sliding columns 123 are respectively connected with two ends of the left-right sliding beam 122 in a sliding manner, and the up-down sliding columns 123 can move relative to the left-right sliding beam 122 along the vertical direction. Meanwhile, the distance between the two upper and lower sliding columns 123 is greater than the maximum width of the center sill leg 130, so that the center sill leg 130 can freely pass through the front sill leg 120 without interfering with each other when the center sill leg 130 and the front sill leg 120 move. In the embodiment of the present invention, the up-down sliding column 123 and the left-right sliding beam 122 may be connected by a front vertical movement hydraulic cylinder, and the up-down sliding column 123 is driven to extend out of or retract into the bottom surface of the main beam 110 of the guide beam along the vertical direction, so as to meet the requirements of different heights when erecting the beam.

In the embodiment of the present invention, the bottom ends of the up-down sliding columns 123 are provided with front supporting bases, and the maximum width of the bottom of each front supporting base is smaller than the width between the up-down sliding columns 123, so as to ensure that the bottom of the front guide beam leg 120 can be completely supported on the bridge pier to be erected, and prevent the front guide beam leg 120 from being unable to reliably support the guide beam main beam 110 on the bridge pier to be erected due to the fact that the distance between the up-down sliding columns 123 is greater than the width of the bridge pier to be erected.

As shown in fig. 10 to 11, the rear guide beam leg 140 includes a rear fixing section 141, a rear sliding section 142, and a rear lower section 143 in order from top to bottom along the vertical direction. Wherein, back sliding joint 142 can drive back lower section post 143 and slide for back fixed knot 141 along vertical direction to make back nose girder landing leg 140 can wholly extend or shorten, satisfy the demand to the different length of back nose girder landing leg 140. The rear lower stud 143 can be flipped (specifically, flipped in a direction toward the center sill leg 130) toward the bottom surface of the main girder 110, that is, the rear lower stud 143 has two states perpendicular or parallel to the main girder 110 with respect to the main girder 110, so as to further extend or shorten the overall length of the rear guide girder leg 140, thereby meeting the requirements of different frame heights.

Specifically, the top end of the rear fixed joint 141 is connected to the main guide beam 110 through the guide beam fixing shaft 144, so that the rear fixed joint 141 can rotate around the guide beam fixing shaft 144, and the rear guide beam legs 140 can be retracted to be disposed at the rear end of the main guide beam 110 in parallel, thereby facilitating the forward or backward movement of the main guide beam 110 without being obstructed by the ground or other obstacles.

The rear guide beam leg 140 further includes a rear sliding section 142, the rear sliding section 142 is slidably connected to the rear fixing section 141, and the rear sliding section 142 can move relative to the rear fixing section 141 along the length direction of the rear fixing section 141. Specifically, the rear sliding joint 142 is connected to the rear fixed joint 141 by a rear sliding hydraulic cylinder, so that the rear sliding joint 142 can move in the length direction thereof with respect to the rear fixed joint 141.

The rear lower section column 143 is provided at the bottom of the rear sliding section 142, and the rear lower section column 143 can be turned over toward the bottom surface of the girder main beam 110. Specifically, the rear lower section column 143 is disposed at the bottom of the rear sliding section 142 and is rotatably connected to the rear sliding section 142. In the embodiment of the present invention, the rear lower link column 143 and the rear sliding link 142 may be hinged. Therefore, the rear lower pitch post 143 can be folded, that is, the rear lower pitch post 143 can be turned over to the ground of the girder main beam 110, so as to adjust the height of the girder guiding machine 100, thereby realizing a low-level girder at the tunnel entrance or a high-level girder without a tunnel.

It should be noted that when the transportation and erection integrated machine of the embodiment of the present invention is in a curved bridging condition, the middle lower stud 134 and the middle stud 133 of the middle guide beam support leg 130 can be controlled to rotate relative to the guide beam main beam 110 by using the middle guide beam support leg 130 as a fulcrum, so as to change an angle between the bottom end of the middle lower stud 134 and the guide beam main beam 110, and the rear guide beam support leg 140 at the rear end of the guide beam main beam 110 can be located right above the corresponding bridge pier to be erected. And the position of the up-down sliding column 123 is changed by controlling the left-right sliding beam 122 of the front guide beam leg 120 to move along the width direction of the guide beam main beam 110, so that the up-down sliding column 123 is positioned right above the corresponding bridge pier to be erected. Thereby enabling the girder guide 100 to adjust the girder guide 100 to be in place according to the specific situation when the curve is bridged.

In the embodiment of the present invention, the front guide beam leg 120, the middle guide beam leg 130, and the rear guide beam leg 140 can drive the guide beam main beam 110 to be raised or lowered, so that the guide beam main beam 110 is at a high position or a low position. In order to ensure that the main guide beam 110 can be reliably adjusted in height, as shown in fig. 12, a jack support 160 is provided at the rear end of the main guide beam 110, and when the main guide beam 110 is switched between the high position and the low position, the jack support 160 can support a jack to cooperate with the main guide beam 110 to adjust the height.

In one embodiment of the present invention, the jack stand 160 is detachably connected to the girder 110. In another embodiment of the present invention, the jack stand 160 is movably connected to the main guide beam 110 and can extend or retract the rear end of the main guide beam 110 along the length of the main guide beam 110. In yet another embodiment of the present invention, the jack stand 160 is rotatably connected to the guide girder 110 so that the jack stand 160 can extend or retract the rear end of the guide girder 110.

The specific method for realizing the height adjustment of the main beam 110 of the guide beam machine 100 by using the jack support 160 in the embodiment of the invention comprises the following steps:

when the height of the guide girder 110 needs to be lowered, the jack stand 160 extends out of the rear end of the guide girder 110 and is supported on the jack. The middle lower leg 134 of the middle guide beam leg 130 is turned upward and the rear lower leg 143 of the rear guide beam leg 140 is turned upward. The jacks and the front girder legs 120 are simultaneously lowered so that the middle girder legs 130 and the rear girder legs 140 are supported on the pier to be erected. At this time, the jack may be detached, and the jack bracket 160 is retracted to the rear end of the main guide beam 110, thereby completing the switching of the main guide beam 110 from the high position to the low position. When the height of the main beam 110 of the guide beam needs to be raised, the principle is the same, and the description is omitted.

In the embodiment of the invention, because the telescopic girder transporting legs 240 can be extended or shortened along the length direction thereof, the front girder leg 120 and the middle girder leg 130 can be moved along the length direction of the girder 110, and the rear girder leg 140 can be turned over along the length direction of the girder 110, the telescopic girder transporting legs 240, the front girder leg 120, the middle girder leg 130 and the rear girder leg 140 can cooperate to realize that the girder guide machine 100 moves between piers to be erected, the girder guide machine 100 can move between the piers to be erected only through the girder transporting machine 200 and the girder guide machine 100, and the girder guide machine 100 can move to a girder erecting station without adding auxiliary equipment.

In the embodiment of the present invention, the girder guiding machine 100 further includes a multifunctional trolley 150, the multifunctional trolley 150 is movably disposed on the girder guiding girder 110, and the multifunctional trolley 150 can move relative to the girder guiding girder 110 along the length direction of the girder guiding girder 110, so as to drive the girder guiding girder 110 to move or drive the girder transporting machine 200 to move.

As shown in fig. 13, the multi-purpose cart 150 includes a plurality of carts 151 and an integrated frame 152, the carts 151 being disposed along a length direction of the girder 110 and connected to the girder 110, respectively, and the carts 151 being connected to an inside of a top portion of the integrated frame 152, respectively. Specifically, the trolleys 151 are movably connected with the main beam 110, the trolleys 151 can move along the length direction of the main beam 110, every two adjacent trolleys 151 are connected through a pin shaft, and the trolleys 151 are respectively connected to the inner side of the top of the integral frame 152 through trolley lifting cylinders, so that the integral frame 152 can ascend or descend along the vertical direction.

In the embodiment of the present invention, the integral frame 152 is provided with support platforms 153 on two sides for driving the girder transporting machine 200 to move. The front guide beam support leg 120, the middle guide beam support leg 130 and the rear guide beam support leg 140 can drive the guide beam main beam 110 and the multifunctional trolley 150 to synchronously move up and down, so that the guide beam main beam 110 and the multifunctional trolley 150 are positioned at a high position or a low position. When the main beam 110 and the multifunctional trolley 150 are located at the lower station, in order to ensure that the overall height of the supporting platform 153 is unchanged, that is, the height of the forward traveling system of the beam transporting machine 200 is unchanged, a trolley supporting frame is arranged on the supporting platform 153.

In the embodiment of the present invention, a relative movement mechanism is disposed between the integrated frame 152 and the main guide beam 110 for driving the multifunctional trolley 150 and the main guide beam 110 to move relatively. Namely, when the position of the multifunctional trolley 150 is fixed, the multifunctional trolley 150 can drive the guide girder 110 to move; when the guide girder 110 is fixed in position, the multi-function trolley 150 can move on the guide girder 110.

In one embodiment of the present invention, the relative movement mechanism comprises a guide beam chain disposed on the guide beam main beam 110 and a middle drive disposed on the top of the trolley 151 near the front end of the guide beam main beam 110; the meso position driver includes frame sprocket and meso position driving motor, and the nose girder chain is connected with the frame sprocket cooperation, and well for driving motor can be hydraulic motor and speed reducer, hydraulic motor drive speed reducer to drive the frame sprocket through the speed reducer and drive the nose girder chain, so that multi-functional platform truck 150 is relative motion with nose girder 110.

In another embodiment of the present invention, the relative movement mechanism comprises a guide beam rack disposed on the guide beam main beam 110 and a middle position driver disposed on the top of the trolley 151 near the front end of the guide beam main beam 110; the middle driver comprises a frame gear and a middle driving motor, the guide beam rack is connected with the frame gear in a matching way, and the middle driving motor drives the frame gear to drive the guide beam rack so as to enable the multifunctional trolley 150 and the guide beam main beam 110 to move relatively.

Each trolley 151 is connected to the top inner side of the integral frame 152 in a lifting and moving manner through a corresponding trolley lifting cylinder. And the integral frame 152 of the multifunctional trolley 150 of the invention can move up and down, when the height of the guide beam and the multifunctional trolley 150 needs to be changed according to the height of different frame beam stations, the height of the integral frame 152 can be adjusted to match with the beam conveying machine 200 to realize beam feeding and beam falling operations.

In the embodiment of the present invention, the number of the trolleys 151 is six, and the trolleys sequentially include a first trolley 151, three second trolleys 151 and two third trolleys 151 from the front end to the rear end of the guide girder 110. The surfaces of the two sides of the guide beam main beam 110 are respectively provided with a trolley 151 track for guiding the trolley 151 to move. As shown in fig. 14, the first cart 151, the second cart 151 and the third cart 151 respectively include a cart cross beam 151-1 and a cart sliding block 151-2, the cart sliding blocks 151-2 are respectively disposed at two ends of the cart cross beam 151-1 and are connected in a cart 151 track through a cart anti-grab wheel 151-3 to realize the movement of the cart 151 relative to the guide girder 110. The first carriage 151 is similar to the second carriage 151 in structure, and since the middle driver is disposed on the top of the first carriage 151, the differences are: when the middle driver is installed at the top end of the first carriage 151, in order to increase the height of the middle driver, the carriage cross beam 151-1 of the first carriage 151 is higher than the second carriage 151. The third trolley 151 is different from the first trolley 151 and the second trolley 151 in that the top end of the third trolley 151 is further provided with a structure for connecting with the girder transporting machine 200.

The multifunctional trolley 150 is provided with a trolley hanging mechanism 154 on the top, and the trolley connecting mechanism 250 is matched with the trolley hanging mechanism 154 so that the multifunctional trolley 150 is hung below the girder 210 of the girder transporting machine 200, so that the girder 210 can load the girder 110. The trolley hanging mechanism 154 is connected to the multi-function trolley 150 through a trolley hanger, which can be extended or shortened in the vertical direction and drives the multi-function trolley 150 to move away from or close to the girder 210. As shown in fig. 15, the number of the trolley hanging mechanisms 154 is two, the two trolley hanging mechanisms 154 are respectively connected with the tops of two trolleys 151 (i.e. two third trolleys 151) of the multifunctional trolley 150 near the rear end of the main girder 110 of the guide beam through trolley hangers, each trolley hanger comprises a telescopic hanger 154-1, a first adjusting section 154-2 and a second adjusting section 154-3, which are sequentially connected from top to bottom along the vertical direction, the second adjusting section 154-3 is movably inserted into the first adjusting section 154-2, the first adjusting section 154-2 is movably inserted into the telescopic hanger 154-1, and the telescopic hanger 154-1 is fixedly connected with the trolley hanging mechanisms 154. Specifically, first and second adjustment segments 154-2 and 154-3 can be driven by corresponding adjustment segment hydraulic cylinders, respectively, such that second adjustment segment 154-3 can be extended or retracted to first adjustment segment 154-2 and first adjustment segment 154-2 can be extended or retracted to telescopic hanger 154-1. When the girder transporting main beam 210 moves up and down along the vertical direction, the trolley hanger can be extended and retracted to keep the heights of the girder guiding main beam 110 and the multifunctional trolley 151 of the girder guiding machine 100 unchanged when the girder transporting main beam 210 of the girder transporting machine 200 performs lifting motion, so as to meet different height requirements of an overhead girder, a tunnel exit girder and a tunnel entrance girder. Specifically, when the frame beam is elevated, the first adjusting section 154-2 is completely extended out of the telescopic hanger 154-1, the second adjusting section 154-3 is not extended out of the first adjusting section 154-2, when the frame beam is erected at the tunnel outlet, the first adjusting section 154-2 and the second adjusting section 154-3 are completely extended out, and when the frame beam is erected at the tunnel inlet, the first adjusting section 154-2 and the second adjusting section 154-3 are completely retracted.

In the embodiment of the present invention, a trolley hanging beam 151-4 and a trolley top beam 151-5 are further disposed on the top of the multifunctional trolley 150, the trolley hanging beam 151-4 is connected to the bottom of the trolley hanger, and the trolley top beam 151-5 is disposed between the trolley hanger and the multifunctional trolley 150 to move in a vertical direction with respect to the trolley hanger. Specifically, as shown in fig. 16, there are two trolley hanging beams 151-4 and two trolley top beams 151-5, one trolley hanging beam 151-4 and one corresponding trolley top beam 151-5 are arranged as a group, and the two groups of trolley hanging beams 151-4 and two groups of trolley top beams 151-5 are respectively fixed on the tops of two trolleys 151 (i.e., two third trolleys 151) near the rear end of the guide girder 110. The top end of the trolley hanging beam 151-4 is provided with a hanging beam hanging part, and the trolley hanging beam 151-4 is hung and hung on a hanging beam at the bottom of the trolley hanging frame through the hanging beam hanging part. The trolley top beam 151-5 is positioned between the top surface of the trolley 151 and the trolley hanging rack, when the trolley connecting mechanism 250 is connected with the trolley hanging mechanism 154, the multifunctional trolley 150 is hung below the main beam 210 of the conveying beam, and after the telescopic hanging rack 154-1 is stressed, the trolley top beam 151-5 tightly pushes the trolley hanging beam 151-4, so that the trolley hanging beam 151-4 and the trolley top beam 151-5 are kept locked on a hanging beam at the bottom of the trolley hanging rack.

The method for erecting the beam at the lower station of the embodiment of the invention is shown in figure 17. Wherein low station girder erection includes girder erection station 320 in or immediately adjacent to the tunnel exit.

Next, a method for erecting beams at a low-position station according to an embodiment of the present invention will be described by taking the beam erecting station 320, which is located next to the tunnel exit, as an example, according to the above-mentioned rack transporting all-in-one machine and fig. 18 to 24.

The method for erecting the box girder at the low station by using the beam guide machine 100 to assist the beam transport machine 200 comprises the following steps:

and S1, mounting the beam guide machine 100 on the beam erecting station 320, and adjusting the height of the main beam 110 of the beam guide machine 100 to enable the beam guide machine 100 to be in a low position. As shown in fig. 18, the front girder leg 120 of the girder guide 100 is supported on the third pier 340 to be erected near the girder transport 200, the middle lower section unit of the middle girder leg 130 of the girder guide 100 and the rear lower section column 143 of the rear girder leg 140 are respectively turned over toward the girder main 110 and horizontally arranged, the bottom end of the middle section column 133 of the middle girder leg 130 and the bottom end of the rear sliding section 142 are respectively supported on the second pier 330 to be erected near the girder transport 200 and the first pier 350 to be erected near the girder transport 200, and the rear end of the trolley support is attached to the front end of the bridge deck. In order to make the top of the support platform 153 flush with the deck 310 on which the girder transporting machine 200 is mounted, and to facilitate the movement of the front traveling system 220 of the girder transporting machine 200, a trolley support is placed on the support platform 153 of the multifunctional trolley 150 of the girder guide machine 100.

S2, the front traveling system 220 of the girder transporting machine 200 moves to the supporting platform 153 of the multifunctional trolley 150 of the girder guiding machine 100, and a trolley supporting frame is arranged between the supporting platform 153 and the front trolley system, as shown in fig. 19.

S3, the multi-function trolley 150 drives the girder transporting machine 200 to move forward along the main girder 110, so that the box girder suspended by the girder transporting machine 200 is located at the girder falling station, and the telescopic girder transporting legs 240 of the girder transporting machine 200 are supported on the second pier 330 to be erected near the bridge floor, as shown in fig. 20. Wherein the beam falling station is located above the beam erecting station 320.

And S4, driving the guide girder 110 to move, so that the front end of the guide girder 110 is positioned above a fourth pier to be erected close to the bridge floor, as shown in FIG. 21, in the process, the rear sliding joints 142 of the rear guide girder legs 140 are retracted upwards, and the rear guide girder legs 140 are prevented from influencing the movement of the guide girder 110. Wherein, the multifunctional trolley 150 of the girder guide machine 100 drives the girder guide 110 to move along the length direction of the girder guide 110.

S5, the trolley connecting mechanism 250 of the girder transporting machine 200 is connected with the trolley suspension structure of the multi-function trolley 150, and the middle girder leg 130 of the girder guiding machine 100 moves forward and is supported on the third pier 340 to be erected, as shown in fig. 22. In this process, further, the method of moving the center girder leg 130 of the girder guide machine 100 forward and supporting on the third pier 340 to be erected includes: shortening the length of the center girder leg 130 away from the second pier 330 to be erected; the middle girder leg 130 moves forward along the girder 110 to above the third pier 340 to be erected; the center girder leg 130 is extended in length to be supported on the third pier 340 to be erected.

S6, the multi-function trolley 150 drives the main guide girder 110 to move, so that the rear end of the main guide girder 110 completely leaves the girder erection station 320, and the rear guide girder leg 140 of the main guide girder 110 is supported on the second pier 330 to be erected, as shown in fig. 23.

S7, the front girder leg 120 of the girder guide 100 moves forward and is supported on the fourth pier to be erected.

The method for moving the front girder leg 120 of the girder guide machine 100 forward and supporting the front girder leg on the fourth bridge pier to be erected includes: shortening the length of the front guide beam leg 120 to leave the third pier 340 to be erected; the front girder leg 120 moves forward along the girder 110 to a position above the fourth pier to be erected; the front girder leg 120 is extended in length to be supported on a fourth pier to be erected.

S8, as shown in fig. 24, the girder transporting machine 200 lowers the box girder so that the box girder is erected at the girder erecting station 320.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. A method for erecting beams at low stations is applied to an all-in-one machine for transporting and erecting, wherein the all-in-one machine for transporting and erecting comprises a beam guiding machine and a beam transporting machine, and is characterized in that: the method comprises the following steps:

s1, mounting the beam guide machine on a beam erecting station, and adjusting the height of a main beam of the beam guide machine to enable the beam guide machine to be in a low position; the girder erecting station is a position close to between a first pier to be erected and a second pier to be erected of the girder transporting machine;

s2, moving the front walking system of the beam conveyor to a supporting platform of a multifunctional trolley of the beam guide machine, wherein a trolley supporting frame is arranged between the supporting platform and the front walking system;

s6, driving the main guide beam to move, enabling the rear end of the main guide beam to completely leave the girder erection station, and enabling the rear guide beam leg of the main guide beam to be supported on the second bridge pier to be erected;

s7, moving forward a front guide beam leg of the guide beam machine, and supporting the front guide beam leg on the fourth bridge pier to be erected;

s8, the box girder is lowered down by the girder transporting machine, so that the box girder is erected on the girder erecting station;

the front guide beam support leg, the middle guide beam support leg and the rear guide beam support leg can drive the guide beam main beam to be lowered, so that the guide beam main beam is positioned at a low position;

the method for moving the front guide beam leg of the guide beam machine forwards and supporting the front guide beam leg on the fourth bridge pier to be erected comprises the following steps:

shortening the length of the front guide beam supporting leg to enable the front guide beam supporting leg to leave the third pier to be erected;

the front guide beam supporting leg moves forwards along the guide beam main beam to be above the fourth bridge pier to be erected;

the length of the front guide beam supporting leg is extended, so that the front guide beam supporting leg is supported on the fourth bridge pier to be erected;

the method for driving the guide beam main beam to move comprises the steps of driving the guide beam main beam to move along the length direction of the guide beam main beam by using a multifunctional trolley of the guide beam machine;

the middle guide beam supporting leg comprises a middle upper section column, a middle section column and a middle lower section column which are sequentially connected from top to bottom along the vertical direction; the middle lower section column comprises a middle lower section unit, and the middle lower section unit is hinged with the bottom of the middle lower section column; the rear guide beam supporting leg sequentially comprises a rear fixed section, a rear sliding section and a rear lower section column from top to bottom along the vertical direction, and the rear sliding section can drive the rear lower section column to slide relative to the rear fixed section along the vertical direction;

in S1: the front guide beam supporting leg of the beam guiding machine is supported on a third pier to be erected close to the beam transporting machine, a middle lower section unit of a middle guide beam supporting leg and a rear lower section column of a rear guide beam supporting leg of the beam guiding machine are respectively overturned towards a main beam of the guide beam and are horizontally arranged, the bottom end of the middle section column and the bottom end of the rear sliding section of the middle guide beam supporting leg are respectively supported on a second pier to be erected close to the beam transporting machine and a first pier to be erected close to the beam transporting machine, and the rear end of the trolley supporting frame is attached to the front end of the bridge floor;

the rear end of the guide beam main beam is provided with a jack support, the jack support can stretch out or retract into the rear end of the guide beam main beam to reduce the height of the guide beam main beam, so that the jack support stretches out the rear end of the guide beam main beam and supports on the jack, the middle and lower section columns of the middle and lower guide beam supporting legs are upwards overturned, the rear and lower section columns of the rear guide beam supporting legs are upwards overturned, and the jack and the front guide beam supporting legs simultaneously descend to enable the middle and lower guide beam supporting legs to be supported on the bridge pier to be erected.

2. A method of low station beam erecting as claimed in claim 1 wherein: the method for enabling the middle guide beam leg of the guide beam machine to move forwards and to be supported on the third bridge pier to be erected comprises the following steps:

shortening the length of the middle guide beam supporting leg to enable the middle guide beam supporting leg to leave the second bridge pier to be erected;

the middle guide beam supporting leg moves forwards along the guide beam main beam to be above the third bridge pier to be erected;

and the length of the middle guide beam supporting leg is extended, so that the middle guide beam supporting leg is supported on the third pier to be erected.

3. A method of low station beam erecting as claimed in claim 1 wherein:

the beam falling station is positioned above the beam erecting station.