WO2022088053A1

WO2022088053A1 - Girder transporting vehicle, girder transporting system, steel box girder assembly system, and steel box girder assembly method

Info

Publication number: WO2022088053A1
Application number: PCT/CN2020/125303
Authority: WO
Inventors: 贺振华; 邹超; 汪惺; 张星; 陈宏俊; 蒋晶; 党豪; 韦凡; 张亚鹏; 刘海涛
Original assignee: 中铁一局集团有限公司; 中铁一局集团第四工程有限公司
Priority date: 2020-10-30
Filing date: 2020-10-30
Publication date: 2022-05-05

Abstract

Disclosed is a girder transporting vehicle, comprising two cabs, a balancing box girder, a girder transporting vehicle main jack, and a girder transporting vehicle auxiliary jack. Also disclosed is a girder transporting system, comprising the girder transporting vehicle, a rotating mechanism, and a clamp rail mechanism. Also disclosed is a steel box girder assembly system, comprising the girder transporting system and a crane system. Also disclosed is a steel girder assembly method, comprising the steps of: one, transporting a steel box girder into position; two, lowering a hoist to connect the steel box girder; three, lifting the steel box girder and three-dimensionally adjusting the position of the steel box girder; four, adjusting the slope of the steel box girder; five, assembling the steel box girder; six, moving a forward-moving base to an updated steel box girder assembling end; and seven, finishing the assembly of the steel box girder. Also disclosed is a steel box girder assembly method, comprising the steps of: A, constructing a support frame; B, laying a track; C, lifting and transporting a steel box girder; D, adjusting the three-dimensional position of the steel box girder and assembling; and E, finishing the assembly of the steel box girder. The assembly of the steel box girder of the present invention is highly precise.

Description

Beam transporting vehicle, beam transporting system, steel box girder assembly system and steel box girder assembly method

technical field

The invention belongs to the technical field of steel box girder assembly, and in particular relates to a girder transport vehicle, a beam transport system, a steel box girder assembly system and a steel box girder assembly method.

Background technique

The steel box girder transportation and installation technology is to set up a prefabrication field behind the platform along the longitudinal axis of the bridge, prefabricate the girder body in stages, and transport the girder section by section to the designated position through the girder transporter, with the help of the original road, track and hydraulic beam transporter. Drop the beam after it is in place. With the continuous improvement of the technical level of bridge design and construction in my country, various continuous steel box girder bridges have emerged in large numbers in the fields of highways, urban transportation, and railways. Due to the advantages of less land occupation, no impact on traffic under the bridge, no need for large lifting equipment, safety and reliability, and low cost, steel box girder transportation and installation trolleys are widely used in its construction. The existing tire flatbed beam transporter has the functions of leveling and leveling and automatic leveling when the platform is lifted, and has the functions of straight running, oblique running, lateral running, eight-character steering and in-situ steering. The steering adopts micro-electric control, which requires shockproof, anti-magnetic, moisture-proof and working stability under normal temperature (-200 ~ +500 ℃). Set up headlights, position lights, warning lights and work lights. The platform is laid with non-slip grid steel plates, and multiple fault detection points are set up to fully consider the convenience of on-site repair and maintenance. It is equipped with a main and a pair of double cabs, and has an interlocking function. The suspension cylinder has the function of double-pipe safety protection for pipeline rupture. The number of tires is large, the size of the beam transporter is large, and the requirements for the construction environment are high, and the beam transport and installation cannot be realized on the high-altitude support.

The existing rail-type beam transporter uses pre-installed rails to transport a beam at the same time through multiple rail-mounted beam transporters. Currently, rail transport beams are rarely used and can achieve synchronous three-dimensional and six-direction adjustment. There are almost no applications for transportation and installation on high-altitude brackets.

Existing machines generally have the following shortcomings and deficiencies: First, the technical synchronization accuracy of the existing transportation equipment is not enough, and the coordination command error is large in the process; Wide width, large gross tonnage, complex construction environment, and complex linear conditions, the closing accuracy and force numerical accuracy are difficult to grasp; third, it requires more operators and labor input; fourth, there are few high-altitude supports. Transportation and installation of integrated equipment and construction techniques.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is to provide a beam transporter, which has a novel and reasonable design, and can solve the transportation control and beam installation accuracy under complex linear conditions through three-dimensional and six-direction transportation and installation operations. The problem of difficult control improves the accuracy of each force value of the beam body during transportation and installation, prevents the beam body from being damaged by uneven force, and eliminates the horizontal load of the substructure, ensuring that the beam body is transported during transportation. And the stability in the installation process, the use of rail transportation, the module car is small in size and large in bearing capacity, and can be used for beam transport on land and high-altitude supports, which solves the realization of the integration of high-altitude beam transport and installation, and is easy to promote and use.

In order to solve the above-mentioned technical problems, the technical scheme adopted in the present invention is: a beam transporting vehicle, which is characterized in that: it includes two car boxes and a balance box beam connecting the two car boxes, and the front and rear ends of the bottom of the car box are provided with ledges. On the concrete base platform is the traveling wheel that moves the basic track of the transport beam. The car box is provided with a reducer that controls the rotation of the walking wheel and a drive motor that cooperates with the reducer. The middle of the balance box beam is provided with a beam transporter jack that protrudes from the top plate of the balance box beam. , a beam carrier is fixedly installed on the jack of the owner of the beam carrier, and a top hat is placed on the top carrier. The top hat is provided with a plurality of pressure sensors and position sensors, and the bottom side of the top hat is provided with a horizontal push-pull top carrier. Auxiliary jack.

The above-mentioned beam transporter is characterized in that: the balance box beam is provided with a vehicle-mounted control box, the vehicle-mounted control box is provided with a vehicle-mounted control board, and the beam-transporting vehicle microcontroller is integrated on the vehicle-mounted control board, so the The signal output ends of the pressure sensor and the position sensor are connected with the input end of the micro-controller of the beam transporter. Controller control.

The invention also discloses a beam transporting system, which is characterized by comprising the above beam transporting vehicle, and a slewing mechanism and a rail clamping mechanism both mounted on the beam transporting vehicle.

The above-mentioned beam transporting system is characterized in that: the slewing mechanism includes a slewing bearing frame body installed on the outer side of the middle part of the balance box girder and a slewing bearing installed at the bottom of the slewing bearing frame body and abutting with the temporary support pier. The pier is set at the intersection of the beam transport foundation track and the beam transport steering track, the beam transport steering track is pre-buried in the concrete turntable, and the beam transport foundation track and the beam transport steering track are set at the intersection with the beam transport foundation track or the transport beam steering track. The active track of the track mate.

The above-mentioned beam transporting system is characterized in that: the rail clamping mechanism includes an upper ear plate and a lower ear plate installed at the front and rear ends of the car box, the lower ear plate is hinged with one end of the clamping frame, and the other end of the clamping frame is connected to the frame. The upper ear plate or the movable track is fixedly connected.

The above-mentioned beam transporting system is characterized in that: the number of the beam transporting vehicles is multiple, and a first synchronization controller connected to a computer is integrated on the vehicle-mounted control board, and the first synchronization controller is connected with the computer. Corresponding to the connection of the beam transporter microcontroller on the vehicle control board.

The invention also discloses a steel box girder assembling system, which is characterized by comprising the above-mentioned beam transporting system and a crane system matched with the beam transporting system, wherein the crane system includes a plurality of crane units. The crane unit includes a forward-moving base arranged on the assembly end of the steel box girder and a crane frame arranged on the forward-moving base and cantilevered out from the assembly end of the steel box girder, and the top of the overhanging end of the crane frame is A steel box girder two-dimensional adjustment mechanism and a balance pulley assembly located outside the steel box girder two-dimensional adjustment mechanism are installed, an upper pulley assembly is installed on the steel box girder two-dimensional adjustment mechanism, and a hoist is installed on the top of the crane frame away from the cantilevered end. The steel wire rope is connected with the lower pulley assembly through the upper pulley assembly and the balance pulley assembly, and the lower pulley assembly is connected with the spreader through the spreader connecting seat;

An on-board control box is arranged on the crane frame, and an on-board control board is arranged in the on-board control box. The on-board control board is integrated with a hoist microcontroller and a second synchronization controller connected to a computer. , the second synchronization controller is connected with the hoist microcontroller on the corresponding onboard control board.

The above-mentioned steel box girder assembly system is characterized in that: the crane frame is arranged on the forward base through the frame rear leg assembly and the frame front leg assembly, and the frame front supports The leg assembly is located at the assembly end of the steel box girder. The forward movement base includes a forward movement track and a bracket forward movement adjustment oil cylinder installed on the forward movement track. The front track is supported on the assembly end of the steel box girder through a plurality of frame temporary support blocks preset on the steel box girder. There is a rack jack anchor plate for installing the rack jack, and the protruding end of the rack jack is matched with the beam surface of the assembled steel box beam through the rack jack support block.

The above-mentioned steel box girder assembly system is characterized in that: the beam surface of the assembled steel box girder is provided with a plurality of reinforcing lugs, and the reinforcing lugs are fixedly connected with the forward track.

The above-mentioned steel box girder assembly system is characterized in that: the two-dimensional adjustment mechanism of the steel box girder includes a crane underframe that is slidingly matched with the top of the cantilever end of the crane frame, and a crane underframe arranged on the crane underframe and connected to the sky. The bottom frame of the crane is slidingly matched with the top frame of the crane. The crane frame is equipped with a bottom frame adjusting oil cylinder. The extension end of the bottom frame adjusting oil cylinder is connected with the bottom frame of the crane. The protruding end of the top frame adjusting oil cylinder is connected with the roof frame of the roof.

The above-mentioned steel box girder assembly system is characterized in that: guardrails are installed on both sides of the crane frame along the length direction.

The above-mentioned steel box girder assembling system is characterized in that: a steel box girder fixing seat for connecting the steel box girder is arranged at the bottom of the sling, and a sling pitch adjusting oil cylinder is installed on the sling connecting seat, The protruding end of the pitch-adjusting oil cylinder is connected with the top plate of the spreader.

The above-mentioned steel box girder assembly system is characterized in that: the upper pulley assembly includes N pulleys, and N is an even number not less than 4, and the number of pulleys in the lower pulley assembly is higher than that of the upper pulley assembly. There are two less pulleys in the balance pulley assembly, and one pulley is included in the balance pulley assembly.

The above-mentioned steel box girder assembly system is characterized in that: the lower pulley assembly is located directly below the upper pulley assembly.

At the same time, the present invention also discloses a method for assembling a steel box girder, which is characterized in that: the method comprises the following steps:

Step 1. The steel box girder is transported in place: use multiple beam transport vehicles to transport the steel box girder to the design position;

Step 2. Lower the spreader to connect the steel box beam: the hoist is paid off, the steel wire rope is extended to lower the spreader, and the bottom of the spreader is provided with a steel box girder fixed catch seat for connecting the steel box beam, and a hanger is installed on the spreader connection seat. Equipped with a pitching adjusting oil cylinder, the extension end of the pitching adjusting oil cylinder of the spreader is connected with the top plate of the spreader;

Connect the steel box girder with the steel box girder fixed grip;

Step 3: Lift the steel box girder and adjust the position of the steel box girder three-dimensionally: the hoist takes up the line, the steel wire rope recovers the lifting sling, the sling lifts the steel box girder to the installation height, and then uses the two-dimensional adjustment mechanism of the steel box girder to move the steel box girder to the installation height. Location;

Step 4. Steel box girder slope adjustment: start the spreader pitch adjustment cylinder to adjust the steel box girder to the design slope;

Step 5. Assemble the steel box girder: connect the steel box girder to the assembly end of the steel box girder to realize the extension of the steel box girder, and the assembly end of the steel box girder is updated at this time;

Step 6. Move the base forward to the assembly end of the updated steel box girder. The process is as follows:

Step 601. The rack jack is lifted to separate the rack rear outrigger assembly and the rack front outrigger assembly from the forward-moving track, remove the connection between the reinforcing ear plate and the forward-moving track, and the bracket forward-moving adjustment oil cylinder drives Move the forward track forward, and then fix the reinforcing ear plate with the forward track;

Step 602, the rack jack is retracted, so that the rack rear outrigger assembly and the rack front outrigger assembly fall on the forward-moving track, and the bracket forward-moving adjustment oil cylinder pushes the rack front outrigger assembly to move forward on the forward-moving track move, and then realize the forward movement of the crane frame;

Step 603, repeat steps 601 and 602 several times, until the advance track is moved forward to the end of the updated steel box girder assembly end, and the advance track is fixedly connected to the beam surface of the assembled steel box girder by using reinforcing lugs ;

Step 7: Repeat steps 1 to 6 for several times until the steel box girder is assembled.

The above-mentioned method is characterized in that: in step 1, the process of transporting the steel box girder into place is as follows:

Step 101, laying out the beam transporting vehicle: laying the beam transporting steering track, the beam transporting steering track is pre-buried in the concrete turntable, the beam transporting steering track intersects with multiple beam transporting base rails, and laying a plurality of transporting beam shifting rails on the beam transporting steering track. For beam trucks, a beam transporter is placed on each beam transport foundation track, the beam transporter on the beam transport foundation track is regarded as the base beam transporter, and the beam transporter on the beam transport steering track is regarded as a steering beam transporter;

At the intersection of the beam-transporting foundation track and the beam-transporting steering track, a movable track is arranged to cooperate with the beam-transporting foundation rail or the beam-transporting steering track;

Step 102, the steel box girder is inserted into the rail: the steel box girder is jacked up synchronously by multiple basic beam transport vehicles, so that the steel box beam is separated from the steel box girder tire frame, and the multiple basic beam transport vehicles transport the steel box girder to the transport beam steering On the track, the foundation beam transporter is parked on the movable track at this time;

Step 103, steel box girder replacement: utilize multiple steering girder transport vehicles to synchronously lift the steel box girder, so that the steel box girder is separated from a plurality of basic beam transport vehicles;

Step 104. Steering of the foundation beam transporter: use the rail clamping mechanism to clamp the movable track, use the temporary support pier to lift the foundation beam transporter, the foundation beam transporter does not contact the steel box girder, and the bottom surface of the movable track is higher than the beam transporter steering The top surface of the track and the beam-carrying foundation track; use the slewing mechanism to steer the foundation beam-carrying vehicle;

Step 105, steel box girder transportation: the temporary support pier lowers the foundation beam transportation vehicle, so that the movable track and the beam transportation steering track are connected, and the rail clamping mechanism is retracted. At this time, the foundation beam transportation vehicle and the steering beam transportation vehicle are in the same direction, and the use of more A basic beam transporter synchronously lifts the steel box girder, so that the basic beam transporter and the steering beam transporter can jointly transport the steel box beam.

Step A, build a support frame: build a support frame at the bottom of the steel box girder design position;

Step B, laying the track: laying multiple groups of beam transport foundation rails on the support frame, and setting a beam transport vehicle on each group of beam transport foundation rails;

Step C. Lifting and moving of steel box girder: use multiple beam transport vehicles to synchronously lift the steel box beam to separate the steel box beam from the steel box girder tire frame, and multiple beam transport vehicles move the steel box beam to the steel box beam synchronously assembly end;

Step D, three-dimensional space position adjustment and assembly of the steel box girder: use the girder transport vehicle to move on the beam transport foundation track to determine the position of the steel box girder in the extension direction of the bridge, adjust the height position of the steel box girder with the beam transport vehicle owner jack, and use Auxiliary jacks for transporting beams are horizontally pushed and pulled to realize the position of the top hat and the steel box girder in the width direction of the bridge;

After the adjustment of the three-dimensional spatial position of the steel box girder is completed, the steel box girder is assembled to the end of the assembly end of the steel box girder, and the support of the steel box girder is unloaded by multiple beam transport vehicles and returned to the steel box girder to be installed in the next section. bottom;

Step E, repeat steps C and D for many times until the steel box girder is assembled.

Compared with the prior art, the present invention has the following advantages:

1. The beam transporter of the present invention solves the problems of difficult transportation control and beam installation accuracy under complex linear conditions through three-dimensional and six-direction transportation and installation operations, and improves the accuracy of each force value of the beam body during transportation and installation. , to prevent the beam body from being damaged by uneven force, and at the same time to eliminate the horizontal load of the lower structure, to ensure the stability of the beam body during transportation and installation, using rail transportation, the module car is small in size and large in bearing capacity , can be used to transport beams above land and high-altitude supports, which solves the realization of the integration of high-altitude beam transport and installation, and is easy to popularize and use.

2. The beam transport system of the present invention realizes the in-situ steering of the beam transport vehicle with the rail through the slewing mechanism and the rail clamping mechanism, the beam transport is stable and reliable, and the use effect is good. There is a broad market in the installation field, and it can better solve the linear control of the small-radius vertical curved beam body.

3. The steel box girder assembly system of the present invention moves the girder in place through the girder transportation system, and the longitudinal movement of the bridge deck crane adopts the walking type, hydraulic drive, and completes the forward movement of the whole machine through the expansion and contraction of the longitudinal movement oil cylinder in coordination with the lifting and lowering of the whole machine. No manual movement is required, and the crane can move forward entirely by the ability of the equipment itself. The hoist is used to provide power, and the maximum lifting weight can be met through the conversion of the wire rope magnification. Synchronous or independent operation avoids the partial beam body caused by equipment coordination during the lifting process. Damage caused by stress concentration, the crane realizes three-dimensional displacement control, which better solves the linear control of small-radius vertical curved beams, and its control accuracy reaches the millimeter level, which reduces the number of back and forth beams and improves The efficiency of construction provides the overall accuracy and efficiency of steel box girder assembly.

4. A steel box girder assembling method of the present invention has simple steps, stable girder transport, accurate docking, precise lifting and slope adjustment of the steel box girder, and the longitudinal movement of the bridge deck crane adopts the walking type, which is driven by hydraulic pressure. The whole machine can be moved forward by telescopic and coordinated with the rise and fall of the whole machine. It does not need manual movement.

5. Another steel box girder assembly method of the present invention has simple steps, laying a high-altitude track, using a beam transport vehicle to move on the beam transport foundation track to determine the position of the steel box beam in the extension direction of the bridge, and using the beam transport vehicle owner jack to adjust the steel box The height position of the beam, the horizontal push-pull top support of the auxiliary jack of the beam transporter is used to realize the position of the top hat and the steel box beam in the width direction of the bridge, which solves the realization of the integration of high-altitude beam transport and installation.

To sum up, the present invention has novel and reasonable design, stable beam transport, accurate docking, precise lifting and slope adjustment of steel box girder, and the longitudinal movement of the bridge deck crane adopts walking walking, hydraulic drive, and is adjusted through the telescopic coordination of the longitudinal movement oil cylinder. The whole machine can be moved forward when the machine is up and down, without manual movement, and the crane can move forward completely by the equipment's own ability.

The technical solutions of the present invention will be further described in detail below through the accompanying drawings and embodiments.

Description of drawings

FIG. 1 is a schematic structural diagram of the installation of a slewing mechanism and a rail clamping mechanism on a beam-carrying vehicle of the present invention.

FIG. 2 is a right side view of FIG. 1 .

FIG. 3 is a state diagram of the beam transporting vehicle of the present invention when it is used as a basic beam transporting vehicle.

FIG. 4 is a schematic diagram of the cooperation relationship between the beam transporter and the temporary support pier according to the present invention.

FIG. 5 is a schematic diagram of the connection relationship between the beam transporting vehicle and the movable track according to the present invention.

FIG. 6 is a state diagram of the beam transporting vehicle of the present invention as a steering beam transporting vehicle.

FIG. 7 is a schematic diagram of the placement position of the beam transporting vehicle on the beam transporting foundation track and the beam transporting diverting track according to the present invention.

FIG. 8 is a schematic diagram of the position state of the basic beam transporting vehicle moving to the intersection of the beam transporting basic rail and the beam transporting diverting rail in FIG. 7 .

FIG. 9 is a schematic diagram of the position state of the steering of the basic beam transport vehicle in FIG. 8 .

Fig. 10 is a use state diagram of the hoist of the present invention.

FIG. 11 is a top view of the unlifted steel box girder in FIG. 10 .

Fig. 12 is a right side view of the wire rope in Fig. 10 not being recovered.

Fig. 13 is a flow chart of a method for assembling a steel box girder according to the present invention.

FIG. 14 is a flow chart of another steel box girder assembling method of the present invention.

Explanation of reference numbers:

1—concrete abutment; 2—transport beam foundation track; 3—movable track;

4—Concrete turntable; 5—Transfer beam steering track; 6—Temporary buttress;

7-1—basic beam carrier; 7-2—steering beam carrier; 8—steel box girder tire frame;

9—steel box girder; 10—car box; 11—balanced box girder;

12—Girder owner jack; 13—Slewing bearing frame body; 14—Slewing bearing;

15—top hat; 16—vehicle control box; 17—travel wheel;

18—upper ear plate; 19—lower ear plate; 20—clamping frame;

21—Auxiliary jack for transporting beam; 22—Reducer; 23—Drive motor;

24—top support; 30—hoist frame; 31—hoist;

32—guardrail; 33—underframe adjustment cylinder; 34—crown undercarriage;

35—the roof frame of the sky car; 36—the top frame adjustment cylinder; 37—the upper pulley assembly;

38—balance pulley assembly; 39—wire rope; 40—frame rear outrigger assembly;

41—frame front leg assembly; 42—forward track; 43—frame temporary support block;

44—Reinforcing ear plate; 45—Bracket forward adjustment cylinder;

46—spreader; 47—spreader connection seat; 48—lower pulley assembly;

49—spreader pitch adjustment cylinder; 50—steel box girder fixed grip;

51—Rack jack anchor plate; 52—Rack jack; 53—Rack jack support block.

Detailed ways

As shown in FIG. 1 and FIG. 3 , a beam transporter according to the present invention includes two boxes 10 and a balance box beam 11 connecting the two boxes 10 . The concrete base 1 is provided with a traveling wheel 17 for moving the beam base rail 2, the car box 10 is provided with a reducer 22 that controls the rotation of the traveling wheel 17 and a drive motor 23 that cooperates with the reducer 22, and the middle of the balance box beam 11 is provided with a protruding A beam-carrying car owner jack 12 for balancing the top plate of the box beam 11 is fixedly mounted on the beam-carrying car owner jack 12 with a jack 24 on which a top cap 15 is placed, and a plurality of pressure sensors and position sensors are arranged in the top hat 15 , the bottom side of the top cap 15 is provided with a beam-carrying auxiliary jack 21 that pushes and pulls the top support 24 horizontally.

It should be noted that the beam transporter of the present invention defines the dimensional position of the beam along the extension direction through the track, and the dimensional position in the width direction of the beam is defined by the fulcrum position between the beam transporter and the beam, but the actual beam transporter and the beam. There is a certain deviation between the positions of the fulcrums. The auxiliary jack 21 for the beam transporter with the horizontal push-pull top bracket 24 is arranged on the bottom side of the top hat 15 to realize the precise adjustment of the dimensional position of the beam width direction. Finally, the beam is adjusted by the main beam transporter jack 12. The dimensional position in the height direction, and then realize the three-dimensional space adjustment of the beam transporter to the beam.

In actual installation and use,

In this embodiment, a vehicle-mounted control box 16 is arranged on the balance box beam 11, and a vehicle-mounted control board is arranged in the vehicle-mounted control box 16. The signal output end of the position sensor is connected to the input end of the micro-controller of the beam transporter, and the reducer 22, the drive motor 23, the beam transporter main jack 12 and the beam transporter auxiliary jack 21 are all controlled by the beam transporter micro-controller. Controller control.

It should be noted that the beam transporter solves the problems of transportation control under complex linear conditions and the difficulty in controlling the installation accuracy of beam sections through the three-dimensional and six-direction transportation and installation operations, and improves the accuracy of the force values of the beam body during transportation and installation. It prevents the beam body from being damaged by uneven force, and at the same time eliminates the horizontal load of the substructure, ensuring the stability of the beam body during transportation and installation. It adopts rail transportation, and the module car is small in size and has a high bearing capacity. It is large and can be used to transport beams above land and high-altitude supports, which solves the realization of the integration of high-altitude beam transport and installation.

A beam transporting system as shown in Figures 2 to 5 includes the beam transporting vehicle of the present invention, and a slewing mechanism and a rail clamping mechanism both mounted on the beam transporting vehicle.

It should be noted that the beam transport system of the present invention realizes the in-situ steering of the beam transport vehicle with the rail through the slewing mechanism and the rail clamping mechanism, the beam transport is stable and reliable, the use effect is good, and the land occupation and equipment investment are reduced under the complex construction environment. There is a broad market in the field of bridge transportation and installation, and it can better solve the linear control of small-radius vertical curved beams.

In this embodiment, the slewing mechanism includes a slewing support frame 13 installed on the outer side of the middle of the balance box girder 11 and a slewing bearing 14 installed at the bottom of the slewing support frame 13 and abutting with the temporary support 6. The temporary support 6 It is arranged at the intersection of the beam transport foundation track 2 and the beam transport steering track 5, the beam transport steering track 5 is pre-buried in the concrete turntable 4, and the beam transport foundation track 2 and the beam transport steering track 5 are provided at the intersection position with the beam transport foundation. The track 2 or the moving beam steering track 5 is matched with the movable track 3.

It should be noted that, the temporary support pier 6 can be a concrete pier supported manually, or a jack can be used to realize the lifting and lowering of the beam-carrying vehicle.

In this embodiment, the rail clamping mechanism includes an upper lug plate 18 and a lower lug plate 19 installed on the front and rear ends of the car box 10 , the lower lug plate 19 is hinged with one end of the clamping frame 20 , and the other end of the clamping frame 20 is connected with the upper lug plate 19 . The lugs 18 or the movable rails 3 are fixedly connected.

In this embodiment, the number of the beam transporting vehicles is multiple, and the vehicle-mounted control board is integrated with a first synchronization controller connected to a computer. Beam car microcontroller connection.

A steel box girder assembly system as shown in FIGS. 1 to 6 and 10 to 12 includes the beam transport system according to the present invention, and a crane system matched with the beam transport system. The crane The system includes a plurality of hoist units, the hoist units include a forward-moving base disposed on the assembly end of the steel box girder, and a crane frame 30 disposed on the forward-moving base and cantilevering out of the assembly end of the steel box girder , the top of the cantilevered end of the crane frame 30 is installed with a two-dimensional adjustment mechanism of steel box girder and a balance pulley assembly 38 located outside the two-dimensional adjustment mechanism of the steel box girder, and an upper pulley assembly 37 is installed on the two-dimensional adjustment mechanism of the steel box beam, A hoist 31 is installed on the top of the machine frame 30 away from the cantilevered end. The wire rope 39 of the hoist 31 is connected to the lower pulley assembly 48 through the upper pulley assembly 37 and the balance pulley assembly 38, and the lower pulley assembly 48 is connected through the spreader connection seat 47 connected with the spreader 46;

The hoist frame 30 is provided with an on-board control box, and an on-board control board is arranged in the on-board control box, and the on-board control board is integrated with a hoist microcontroller and a second synchronous control device connected to a computer. The second synchronization controller is connected with the hoist microcontroller on the corresponding onboard control board.

It should be noted that, the steel box girder assembly system of the present invention transports the beams in place through the beam transport system, and the longitudinal movement of the bridge deck crane adopts walking walking, hydraulic drive, and the whole machine is completed by the expansion and contraction of the longitudinal movement oil cylinder in coordination with the lifting and lowering of the whole machine. Moving forward, no manual movement is required, and the crane is completely moved forward by the ability of the equipment itself. The hoist is used to provide power, and the maximum lifting weight can be met through the conversion of the wire rope magnification. Synchronous or independent operation avoids equipment coordination during the lifting process. The damage caused by the local stress concentration of the beam body, the crane realizes the three-dimensional displacement control, which better solves the linear control of the small-radius vertical curve beam body, and its control accuracy reaches the millimeter level, which reduces the return of the beam back and forth. The number of times improves the efficiency of construction, and provides the overall accuracy and efficiency of steel box girder assembly.

In this embodiment, the hoist frame 30 is arranged on the forward base through the frame rear support leg assembly 40 and the frame front support leg assembly 41, and the frame front support leg assembly 41 is located on the steel frame. At the assembly end of the box girder, the forward movement base includes a forward movement rail 42 and a bracket forward movement adjustment cylinder 45 installed on the forward movement rail 42. The extended end of the bracket forward movement adjustment cylinder 45 is assembled with the frame front leg assembly 41 is connected, the forward track 42 is supported on the assembly end of the steel box girder through a plurality of rack temporary supports 43 preset on the steel box girder 9, the rack rear support leg assembly 40 and the rack front support leg assembly The outer side of 41 is provided with a frame jack anchor plate 51 for installing the frame jack 52 .

In this embodiment, a plurality of reinforcing lugs 44 are provided on the beam surface of the assembled steel box girder, and the reinforcing lugs 44 are fixedly connected with the forward track 42 .

It should be noted that a plurality of rack temporary support blocks 43 are temporarily fixed and assembled at the assembly end of the steel box girder. When a new steel box girder 9 is assembled, the used ones on the assembled bridge deck will be One rack temporary support block 43 is disassembled and installed on the new steel box girder 9, which can be used repeatedly. A plurality of reinforcing lugs 44 are fixedly connected to the advance rail 42 and the plurality of rack temporary support blocks 43, and the support moves forward. The adjusting oil cylinder 45 pulls the advancing rail 42 to slide on the plurality of frame temporary support blocks 43 to avoid friction between the advancing rail 42 and the bridge deck and damage the bridge deck.

In the real-time operation, the extended end of the bracket advance adjustment cylinder 45 is connected with the frame front leg assembly 41, and the fixed end of the bracket advance adjustment cylinder 45 is connected with the advance track 42. In the initial state, the bracket advance adjustment cylinder 45 is in the extended state. After the new steel box girder 9 is assembled, the rear outrigger assembly 40 and the front outrigger assembly 41 of the frame are jacked up, and a plurality of reinforcements that fix the forward rail 42 are removed. The lug plate 44 makes the advance track 42 uncompressed. At this time, the support is retracted to advance the adjustment cylinder 45, and the fixed end of the bracket advance adjustment cylinder 45 moves forward, which drives the advance track 42 to move forward, and then uses a plurality of reinforcing lugs to move forward. The plate 44 fixedly connects the forward-moving rail 42 with a plurality of rack temporary support blocks 43, lowers the rack rear support leg assembly 40 and the rack front support leg assembly 41 to the forward-moving rail 42, and adjusts the forward movement of the extension bracket The oil cylinder 45, at this time, the fixed end of the bracket advance adjustment oil cylinder 45 is fixed at the connection position of the forward movement rail 42, and the frame rear leg assembly 40 and the frame front leg assembly 41 move forward on the forward movement rail 42. , the operation is simple, without the use of large mechanical equipment.

In this embodiment, the steel box girder two-dimensional adjustment mechanism includes a crane underframe 34 that is slidingly matched with the top of the cantilevered end of the crane frame 30 , and a crane underframe 34 that is disposed on the crane underframe 34 and slidably matched with the crane underframe 34 . The crane frame 35 is provided with a bottom frame adjusting oil cylinder 33, the extension end of the bottom frame adjusting oil cylinder 33 is connected with the top frame bottom frame 34, and a top frame adjusting oil cylinder is installed on the top frame adjusting oil cylinder 34. 36. The extension end of the top frame adjusting oil cylinder 36 is connected with the roof frame 35 of the roof.

In this embodiment, guardrails 32 are installed on both sides of the crane frame 30 along the length direction.

In this embodiment, the bottom of the spreader 46 is provided with a steel box girder fixing grip 50 for connecting the steel box beam 9, the spreader connecting seat 47 is installed with a spreader pitch adjustment oil cylinder 49, and the spreader pitch adjustment oil cylinder The protruding end of 49 is connected with the top plate of the hanger 46 .

It should be noted that the horizontal hoisting of the steel box girder 9 by the spreader 46 can be realized by a symmetrical structure, but the actual bridge deck often has a certain slope. After the box girder is assembled, the tilt and pitch of the spreader 46 is realized by the push and pull of the spreader pitch adjustment oil cylinder 49, which is close to the linear design of the bridge deck.

In this embodiment, the upper pulley assembly 37 includes N pulleys, and N is an even number not less than 4, and the number of pulleys in the lower pulley assembly 48 is two less than the number of pulleys in the upper pulley assembly 37 One, the balance pulley assembly 38 includes one pulley.

It should be noted that the function of setting the balance pulley assembly 38 is to balance the force on the wire rope between the upper pulley assembly 37 and the lower pulley assembly 48. If the force on the wire rope 39 is uneven, there will be a side force in the upper pulley assembly 37. When the large side force is small, the balance of the force is maintained by the rotation of the pulley in the balance pulley assembly 38. The winding method of the wire rope 39 is that one end is fixed on the hoist, and the other end passes through the upper pulley assembly 37, the lower pulley assembly 48 and the balance pulley. The assembly 38 is then fixed on the hoist. The balance pulley assembly 38 includes a pulley, and this pulley is located beside the middle of the upper pulley assembly 37. Therefore, the upper pulley assembly 37 includes N pulleys, and N takes an even number, Taking N as 8 as an example, this pulley in the balance pulley assembly 38 is located beside the position between the fourth pulley and the fifth pulley in the upper pulley assembly 37, and the wire rope 39 passes through the upper pulley assembly 37. The upper part of the fourth pulley is wound to the bottom of the pulley in the balance pulley assembly 38, and then comes out from the top of the pulley in the balance pulley assembly 38 and is wound to the upper part of the fifth pulley in the upper pulley assembly 37, so that the upper pulley assembly 37 The winding direction on the 1st pulley to the 4th pulley in the middle is opposite to the winding direction on the 5th pulley to the 8th pulley in the upper pulley assembly 37, so the wire rope 39 is wound on the upper pulley assembly 37. Symmetric, in the same way, the wire rope 39 is also symmetrically wound on the lower pulley assembly 48, and the first pulley to the fourth pulley in the upper pulley assembly 37 cooperate with the first pulley to the third pulley on the lower pulley assembly 48. , due to the symmetrical structure, the number of pulleys in the lower pulley assembly 48 is two less than the number of pulleys in the upper pulley assembly 37, that is, N is an even number not less than 4.

In this embodiment, the lower pulley assembly 48 is located directly below the upper pulley assembly 37 .

A method for assembling a steel box girder as shown in Figure 13, the method includes the following steps:

Step 1. The steel box girder is transported in place: use multiple beam transport vehicles to transport the steel box girder 9 to the design position;

Step 2, lowering the spreader to connect the steel box beam: the hoist 31 pays off the wire, the wire rope 39 extends and lowers the spreader 46, and the bottom of the spreader 46 is provided with a steel box girder fixing grip 50 for connecting the steel box beam 9. The spreader A spreader pitch adjustment oil cylinder 49 is installed on the connecting base 47, and the extension end of the spreader pitch adjustment cylinder 49 is connected to the top plate of the spreader 46;

Connect the steel box girder 9 with the steel box girder fixed catch 50;

Step 3: Lift the steel box girder and adjust the position of the steel box girder three-dimensionally: the hoist 31 takes up the wire, the wire rope 39 recovers the lifting sling 46, the sling 46 carries the steel box girder 9 and rises to the installation height, and then uses the steel box girder two-dimensional adjustment mechanism to lift the steel box girder. The box girder 9 is moved to the installation position;

Step 4, steel box girder slope adjustment: start the spreader pitch adjustment oil cylinder 49, and adjust the steel box girder 9 to the design slope;

Step 5. Assemble the steel box girder: connect the steel box girder 9 with the assembly end of the steel box girder to realize the extension of the steel box girder, and the assembly end of the steel box girder is updated at this time;

Step 601: Lift the rack jack 52 to separate the rack rear outrigger assembly 40 and the rack front outrigger assembly 41 from the forward-moving rail 42, remove the connection between the reinforcing ear plate 44 and the forward-moving rail 42, The support advance adjustment oil cylinder 45 drives the advance track 42 to move forward, and then the reinforcing lug plate 44 is fixedly connected with the advance track 42;

Step 602 , the frame jack 52 is retracted, so that the frame rear outrigger assembly 40 and the frame front outrigger assembly 41 fall on the forward moving rail 42 , and the frame forward movement adjusting oil cylinder 45 pushes the frame front outrigger assembly 41 move forward on the forward movement track 42, thereby realizing the forward movement of the hoist frame 30;

Step 603, repeat steps 601 and 602 several times, until the advancing rail 42 is moved forward to the end of the updated steel box girder assembly end, and the front rail 42 is connected to the beam of the assembled steel box girder by using the reinforcing lug plate 44. surface fixed connection;

As shown in Figures 7 to 9, in this embodiment, the process of transporting the steel box girder into place in step 1 is as follows:

Step 101, laying out the beam transporting vehicle: laying the beam transporting steering track 5, the beam transporting steering track 5 is pre-buried in the concrete turntable 4, the beam transporting steering track 5 intersects with a plurality of beam transporting base rails 2, and the beam transporting steering track 5 is A plurality of beam transport vehicles are arranged on the top of the beam, and one beam transport vehicle is placed on each beam transport foundation track 2. The beam transport vehicle on the beam transport base track 2 is regarded as the basic beam transport vehicle 7-1, and the beam transport is turned to the track 5. The beam-carrying vehicle above is regarded as a steering beam-carrying vehicle 7-2;

A movable rail 3 that cooperates with the basic rail 2 for transporting beams or the steering rail for transporting beams 5 is arranged at the intersection of the beam transporting base rail 2 and the transporting beam steering rail 5;

Step 102, the steel box girder is inserted into the rail: use a plurality of basic beam transport vehicles 7-1 to simultaneously lift the steel box beam 9, so that the steel box beam 9 is separated from the steel box beam tire frame 8, and a plurality of basic beam transport vehicles 7-1 1. Move the steel box girder 9 to the beam-transporting steering track 5, and the basic beam-transporting vehicle 7-1 stops on the movable track 3 at this time;

Step 103, changing the support of the steel box beam: using a plurality of steering beam transport vehicles 7-2 to synchronously lift the steel box beam 9, so that the steel box beam 9 is separated from the multiple basic beam transport vehicles 7-1;

Step 104, the basic beam transporting vehicle is turned: the movable rail 3 is clamped by the rail clamping mechanism, and the basic beam transporting vehicle 7-1 is lifted by the temporary support pier 6, and the basic beam transporting vehicle 7-1 is not in contact with the steel box girder 9, and The bottom surface of the movable track 3 is higher than the top surface of the beam transport steering track 5 and the beam transport foundation track 2; the basic beam transport vehicle 7-1 is turned by the slewing mechanism;

Step 105, steel box girder transportation: the temporary support pier 6 lowers the basic beam transporting vehicle 7-1, so that the movable track 3 and the beam transporting steering track 5 are docked, and the rail clamping mechanism is retracted. At this time, the basic beam transporting vehicle 7-1 and The steering beam transporter 7-2 is in the same direction, and multiple basic beam transporters 7-1 are used to simultaneously lift the steel box girder 9, so that the basic beam transporter 7-1 and the steering beam transporter 7-2 can jointly move the steel box girder 9.

The steel box girder assembly method has simple steps, stable girder transport, accurate docking, precise lifting and slope adjustment of the steel box girder, and the longitudinal movement of the bridge deck crane adopts walking walking, hydraulic drive, and the whole machine is coordinated through the expansion and contraction of the longitudinal movement cylinder. It can complete the forward movement of the whole machine after the rise and fall, without manual movement, and completely rely on the ability of the equipment itself to realize the forward movement of the crane, with a high degree of automation.

A method for assembling a steel box girder as shown in Figure 14, the method includes the following steps:

Step B, laying the track: laying multiple groups of beam transport foundation rails 2 on the support frame, and setting a beam transport vehicle on each group of beam transport foundation rails 2;

Step C, the lifting of steel box girder and the movement: utilize a plurality of beam transport vehicles to synchronously lift the steel box beam 9, so that the steel box beam 9 is separated from the steel box beam tire frame 8, and the multiple beam transport vehicles are transported synchronously Steel box girder 9 to the assembly end of the steel box girder;

Step D, steel box girder three-dimensional space position adjustment and assembly: utilize the beam transport vehicle to move on the beam transport foundation track 2 to determine the position of the steel box beam 9 on the bridge extension direction, and utilize the beam transport vehicle owner jack 12 to adjust the position of the steel box beam 9. For the height position, the auxiliary jack 21 of the beam transporter is used to push and pull the top support 24 horizontally to realize the position of the top hat 15 with the steel box girder 9 in the width direction of the bridge;

After the adjustment of the three-dimensional spatial position of the steel box girder 9 is completed, the steel box girder 9 is assembled to the end of the assembly end of the steel box girder, and the support for the steel box girder 9 is unloaded by a plurality of beam transport vehicles and returned to the next section to be installed. Bottom of steel box girder 9;

The steel box girder assembly method has simple steps, laying a high-altitude track, using the girder transport vehicle to move on the beam transport foundation track to determine the position of the steel box girder in the extension direction of the bridge, and using the beam transport vehicle owner's jack to adjust the height position of the steel box girder, The position of the top hat and the steel box girder in the width direction of the bridge is realized by horizontally pushing and pulling the top support with the auxiliary jack of the beam transporter, which solves the problem of the integration of high-altitude transport beams and installation.

The present invention has novel and reasonable design, stable beam transport, accurate docking, and precise lifting and slope adjustment of steel box beams. The whole machine is moved forward without manual movement, and the crane can be moved forward entirely by the ability of the equipment itself, with a high degree of automation.

The above are only preferred embodiments of the present invention and do not limit the present invention. Any simple modifications, changes and equivalent structural changes made to the above embodiments according to the technical essence of the present invention still belong to the technology of the present invention. within the scope of the program.

Claims

A beam transporting vehicle is characterized in that: it comprises two truck boxes (10) and a balance box beam (11) connecting the two truck boxes (10), and the front and rear ends of the bottom of the truck box (10) are provided with a concrete base along the The platform (1) is provided with a traveling wheel (17) that moves on the base rail (2) of the transport beam, and the carriage (10) is provided with a reducer (22) for controlling the rotation of the traveling wheel (17) and a drive cooperating with the reducer (22). The motor (23), the middle of the balance box girder (11) is provided with a beam transporting vehicle owner jack (12) extending out of the top plate of the balance box beam (11), the beam transporting vehicle owner jack (12) is fixedly installed with a jacking support (24), the top A top cap (15) is placed on the support (24), a plurality of pressure sensors and position sensors are arranged in the top cap (15), and a transport mechanism for horizontally pushing and pulling the top support (24) is provided on one side of the bottom of the top cap (15). Beam truck auxiliary jack (21).
A beam transporting vehicle according to claim 1, characterized in that: the balance box beam (11) is provided with a vehicle-mounted control box (16), and the vehicle-mounted control box (16) is provided with a vehicle-mounted control board, and the A beam transporter microcontroller is integrated on the vehicle-mounted control board, the signal output ends of the pressure sensor and the position sensor are connected with the input end of the beam transporter microcontroller, the reducer (22), the drive motor (23) ), the main beam transport jack (12) and the beam transport auxiliary jack (21) are all controlled by the beam transporter microcontroller.
A beam transporting system is characterized by comprising the beam transporting vehicle as claimed in claim 2, and a slewing mechanism and a rail clamping mechanism both mounted on the beam transporting vehicle.
A beam transport system according to claim 3, characterized in that: the slewing mechanism comprises a slewing support frame body (13) installed on the outer side of the middle of the balance box girder (11) and a slewing support frame body (13) installed on the slewing support frame body (13) The slewing bearing (14) at the bottom and in contact with the temporary support pier (6), the temporary support pier (6) is arranged at the intersection of the beam transport foundation rail (2) and the transport beam steering rail (5), and the transport beam steering rail ( 5) Pre-embedded in the concrete turntable (4), at the intersection of the beam transport foundation track (2) and the beam transport steering track (5), there is a beam transport base track (2) or the beam transport steering track (5) at the intersection. Active track (3).
A beam transport system according to claim 4, characterized in that: the rail clamping mechanism comprises an upper ear plate (18) and a lower ear plate (19) installed at the front and rear ends of the car box (10), and the lower ear plate ( 19) is hinged with one end of the clamping frame (20), and the other end of the clamping frame (20) is fixedly connected with the upper ear plate (18) or the movable track (3).
A beam transporting system according to claim 3, characterized in that: the number of the beam transporting vehicles is plural, the vehicle-mounted control board is integrated with a first synchronization controller connected to a computer, and the first synchronization controller is connected to the computer. A synchronous controller is connected with the micro-controller of the beam transporter on the corresponding vehicle-mounted control board.
A steel box girder assembly system, characterized in that it comprises the beam transport system as claimed in claim 6, and a crane system matched with the beam transport system, the crane system comprising a plurality of crane units, The crane unit includes a forward-moving base disposed at the assembly end of the steel box girder, and a crane frame (30) disposed on the forward-moving base and cantilevered out from the assembly end of the steel box girder, the crane frame (30). 30) A two-dimensional adjustment mechanism of steel box girder and a balance pulley assembly (38) located on the outside of the two-dimensional adjustment mechanism of steel box girder are installed on the top of the cantilever end of the steel box girder, and an upper pulley assembly (37) is installed on the two-dimensional adjustment mechanism of steel box girder. A winch (31) is installed on the top of the machine frame (30) away from the cantilever end, and the wire rope (39) of the winch (31) passes through the upper pulley assembly (37), the balance pulley assembly (38) and the lower pulley assembly (48) ) is connected, and the lower pulley assembly (48) is connected with the spreader (46) through the spreader connecting seat (47);

The hoist frame (30) is provided with an on-board control box, an on-board control board is arranged in the on-board control box, and the on-board control board is integrated with a hoist microcontroller and a second computer connected to the computer. A synchronization controller, the second synchronization controller is connected with the hoist microcontroller on the corresponding onboard control board.
A steel box girder assembly system according to claim 7, characterized in that: the crane frame (30) passes through the frame rear support leg assembly (40) and the frame front support leg assembly (41) The front support leg assembly (41) of the frame is located at the assembly end of the steel box girder, and the forward base includes a forward track (42) and is installed on the forward track (42). The bracket advance adjustment oil cylinder (45), the extension end of the bracket advance adjustment oil cylinder (45) is connected with the frame front outrigger assembly (41), and the advance track (42) passes through the pre-set steel box beam (9). A plurality of rack temporary support blocks (43) on the ) are supported on the assembly end of the steel box girder, and the outer side of the rack rear support leg assembly (40) and the rack front support leg assembly (41) are provided for installation The frame jack anchor plate (51) of the frame jack (52), the extending end of the frame jack (52) is matched with the beam surface of the assembled steel box beam through the frame jack support block (53).
A steel box girder assembling system according to claim 8, characterized in that: a plurality of reinforcing lugs (44) are provided on the beam surface of the assembled steel box girder, and the reinforcing lugs (44) are connected with The forward track (42) is fixedly connected.
A steel box girder assembly system according to claim 7, characterized in that: the two-dimensional adjustment mechanism of the steel box girder comprises a crane underframe (34) slidingly matched with the top of the cantilevered end of the crane frame (30). and a ceiling frame (35) arranged on the base frame (34) and slidingly matched with the base frame (34), and a base frame adjusting oil cylinder (33) is installed on the crane frame (30), The protruding end of the frame adjusting oil cylinder (33) is connected with the crane bottom frame (34), the top frame adjusting oil cylinder (36) is installed on the top frame adjusting oil cylinder (34), and the protruding end of the top frame adjusting oil cylinder (36) is connected to the top frame adjusting oil cylinder (36). The roof rack (35) is connected.
A steel box girder assembly system according to claim 7, characterized in that: guardrails (32) are installed on both sides of the crane frame (30) along the length direction.
A steel box girder assembly system according to claim 7, characterized in that: the bottom of the hanger (46) is provided with a steel box girder fixing catch (50) for connecting the steel box girder (9), the A spreader pitch adjusting oil cylinder (49) is installed on the spreader connecting seat (47), and the extension end of the spreader pitch adjusting oil cylinder (49) is connected with the top plate of the spreader (46).
A steel box girder assembly system according to claim 7, characterized in that: the upper pulley assembly (37) includes N pulleys, and N is an even number not less than 4, and the lower pulley assembly (37) The number of pulleys in 48) is two less than the number of pulleys in the upper pulley assembly (37), and the balance pulley assembly (38) includes one pulley.
A steel box girder assembly system according to claim 7, characterized in that: the lower pulley assembly (48) is located directly below the upper pulley assembly (37).
A method for assembling steel box girder using the system according to claim 9, characterized in that: the method comprises the following steps:

Step 1. The steel box girder is transported in place: the steel box girder (9) is transported to the design position by using a plurality of beam transport vehicles;

Step 2, lowering the spreader to connect the steel box beam: the hoist (31) pays off, the wire rope (39) extends and lowers the spreader (46), and the bottom of the spreader (46) is provided with a steel box for connecting the steel box beam (9). a beam fixing grab seat (50), a spreader pitch adjustment oil cylinder (49) is installed on the spreader connection seat (47), and the extension end of the spreader pitch adjustment oil cylinder (49) is connected with the top plate of the spreader (46);

Connect the steel box girder (9) with the steel box girder fixed catch (50);

Step 3: Lift the steel box girder and adjust the position of the steel box girder three-dimensionally: the hoist (31) takes up the wire, the wire rope (39) recovers the lifting sling (46), and the sling (46) carries the steel box girder (9) to the installation height , and then use the steel box girder two-dimensional adjustment mechanism to move the steel box girder (9) to the installation position;

Step 4. Steel box girder slope adjustment: start the spreader pitch adjustment oil cylinder (49), and adjust the steel box girder (9) to the design slope;

Step 5. Assembling the steel box girder: connect the steel box girder (9) with the assembly end of the steel box girder to realize the extension of the steel box girder, and the assembly end of the steel box girder is updated at this time;

Step 6. Move the base forward to the assembly end of the updated steel box girder. The process is as follows:

Step 601: Lift the rack jack (52) to separate the rack rear outrigger assembly (40) and the rack front outrigger assembly (41) from the forward rail (42), and remove the reinforcing ear plate ( 44) The connection with the advance track (42), the support advance adjustment cylinder (45) drives the advance track (42) to move forward, and then the reinforcing lug plate (44) is fixedly connected with the advance track (42);

Step 602: The frame jack (52) is retracted, so that the frame rear outrigger assembly (40) and the frame front outrigger assembly (41) fall on the forward movement track (42), and the frame moves forward to adjust the oil cylinder (45). ) push the frame front leg assembly (41) to move forward on the forward movement track (42), thereby realizing the forward movement of the crane frame (30);

Step 603, repeat steps 601 and 602 several times until the forward-moving track (42) moves forward to the end of the updated steel box girder assembly end, and the forward-moving track (42) is connected with the existing steel box girder using the reinforcing lug plate (44). The beam surface of the assembled steel box girder is fixedly connected;

Step 7: Repeat steps 1 to 6 for several times until the steel box girder is assembled.
According to the method described in claim 15, it is characterized in that: in step 1, the process of transporting the steel box girder into place is as follows:

Step 101, laying out the beam transporting vehicle: laying the beam transporting diverting track (5), the beam transporting diverting track (5) is pre-buried in the concrete turntable (4), the beam transporting diverting track (5) and a plurality of beam transporting foundation rails ( 2) Intersection, place a plurality of beam transport vehicles on the beam transport steering track (5), place a beam transport vehicle on each beam transport foundation track (2), and the beam transporter on the beam transport base track (2) The vehicle is regarded as the basic beam transport vehicle (7-1), and the beam transport vehicle on the beam transport steering track (5) is regarded as the steering beam transport vehicle (7-2);

A movable rail (3) matched with the beam transport foundation rail (2) or the beam transport steering rail (5) is provided at the intersection of the beam transport foundation rail (2) and the beam transport steering rail (5);

Step 102, the steel box girder is inserted into the rail: the steel box girder (9) is lifted synchronously by using a plurality of basic beam transport vehicles (7-1), so that the steel box girder (9) is separated from the steel box girder tire frame (8), A plurality of basic beam transport vehicles (7-1) move the steel box girder (9) to the beam transport steering track (5), and at this time the basic beam transport vehicle (7-1) stops on the movable track (3);

Step 103. Replacing the steel box girder braces: using a plurality of steering beam transport vehicles (7-2) to synchronously lift the steel box beam (9), so that the steel box beam (9) is moved from the multiple basic beam transport vehicles (7-1) upper separation;

Step 104, the basic beam transporter is turned: the movable rail (3) is clamped by the rail clamping mechanism, the base beam transporter (7-1) is lifted by the temporary support pier (6), and the base beam transporter (7-1) is connected to the base beam transporter (7-1). The steel box girder (9) is not in contact, and the bottom surface of the movable track (3) is higher than the top surface of the girder-carrying steering track (5) and the girder-carrying foundation track (2). ) turn;

Step 105. The steel box girder is transported: the temporary support pier (6) lowers the basic beam transporter (7-1), so that the movable track (3) and the beam transport steering track (5) are butted, and the rail clamping mechanism is retracted. The basic beam transporter (7-1) and the steering beam transporter (7-2) are in the same direction, and multiple basic beam transporters (7-1) are used to simultaneously lift the steel box girder (9) to realize the basic beam transporter ( 7-1) and the steering beam transporter (7-2) jointly transport the steel box beam (9).
A method for assembling a steel box girder utilizing the beam transporter as claimed in claim 2, wherein the method comprises the following steps:

Step A, build a support frame: build a support frame at the bottom of the steel box girder design position;

Step B, laying the track: laying multiple groups of beam transport foundation rails (2) on the support frame, and setting a beam transport vehicle on each group of beam transport foundation rails (2);

Step C, the lifting and transportation of the steel box girder: the steel box girder (9) is synchronously lifted by a plurality of beam transport vehicles, so that the steel box girder (9) is separated from the steel box girder tire frame (8), and a plurality of The beam transporter synchronously moves the steel box beam (9) to the assembly end of the steel box beam;

Step D, three-dimensional space position adjustment and assembly of the steel box girder: use the beam transport vehicle to move on the beam transport foundation track (2) to determine the position of the steel box beam (9) in the bridge extension direction, and use the beam transport vehicle owner jack (12) Adjust the height position of the steel box girder (9), and use the auxiliary jack (21) of the beam transporter to push and pull the top support (24) horizontally to realize the position of the top hat (15) together with the steel box girder (9) in the width direction of the bridge;

After the adjustment of the three-dimensional spatial position of the steel box girder (9) is completed, the steel box girder (9) is assembled to the end of the assembly end of the steel box girder, and the support for the steel box girder (9) is unloaded by multiple beam transport vehicles and returned to the The bottom of the steel box girder (9) to be installed in the next section;

Step E, repeat steps C and D for many times until the steel box girder is assembled.