CN106917360A - Lift leg formula frame plate machine and its frame plate method - Google Patents

Abstract

The invention discloses a leg lifting type erecting machine and its erecting method, and relates to the technical field of bridge maintenance, reinforcement and transformation engineering construction, comprising: a main structure, which includes two oppositely arranged main beams, two ends of the two main beams The first beam and the second beam are fixed, and the main beam adopts a segmented structure. The supporting mechanism includes front outriggers, middle outriggers and rear outriggers fixed on the two main beams. The front outriggers, middle outriggers and rear outriggers are equipped with telescopic devices. The telescopic devices can make the front outriggers, middle outriggers Outriggers and rear outriggers are extended and contracted. The rear outriggers include a turning device connected to the first crossbeam. The turning device drives the rear outriggers to turn around the first crossbeam. The running device can run longitudinally and laterally along the bridge. The hoisting device includes a crown block and a spreader. The spreader is arranged under the crown block. The crown block can retract and lower the spreader, and it can also move longitudinally and laterally along the bridge. The invention is convenient to assemble and disassemble, and has the functions of longitudinal movement and lateral movement at the same time.

Description

Leg lifting type racking machine and its racking method

technical field

The invention relates to the technical field of bridge maintenance, reinforcement and transformation engineering construction, in particular to a leg-lifting type erecting machine and a method for erecting the plank.

Background technique

The Jiujiang Yangtze River Bridge is the first batch of large road-rail bridges in my country after the Wuhan Yangtze River Bridge, and it is also the longest road-rail bridge in my country with the largest engineering volume. With the increase of service life and traffic volume, the concrete deck of the original highway bridge has been damaged and fallen off. Because the railway business line underneath, there is a very serious safety hazard to the safe operation of the train. In 2015, it was formally inspected It has launched a comprehensive reinforcement and transformation. The main content of this reinforcement and transformation is to replace the original concrete bridge deck with a steel bridge deck with a longer life. The new steel bridge deck is affected by the existing railway truss structure. 9.01 x 9.94 meters. The height and width of the construction space are greatly limited due to the three arch structures and half-width construction. The existing structure has limited bearing capacity and has weight restrictions on the erection equipment. The flat chord area and the three major arch areas should be divided into different blocks, and the erection equipment must have the function of lateral movement. Due to the half-width construction, the equipment needs to be disassembled and assembled multiple times. Based on the above conditions, the existing hoisting equipment, bridge erecting machines, and girder erecting machines cannot meet the installation requirements of the new steel bridge deck.

Contents of the invention

In view of the defects existing in the prior art, the object of the present invention is to provide a leg-lifting trigger that is easy to dismantle and has the functions of longitudinal and lateral movement.

For achieving above object, the technical scheme that the present invention takes is:

A leg lifter, comprising:

The main structure includes two main beams arranged opposite to each other, the two ends of the two main beams are fixed with a first beam and a second beam connecting the two main beams, and the main beam is a segmented structure;

A supporting mechanism, which includes front outriggers, middle outriggers and rear outriggers fixed on the two main beams, the front outriggers, middle outriggers and rear outriggers are all equipped with telescopic devices, and the telescopic devices The front outrigger, the middle outrigger and the rear outrigger can be extended and contracted, and the rear outrigger also includes a turning device connected to the first beam, and the turning device drives The rear outriggers are folded around the first beam, and the lower parts of the middle outriggers and the rear outriggers are also equipped with running devices, and the running devices can run longitudinally and laterally along the bridge; and

Lifting device, which includes a crown block and a spreader, the spreader is arranged under the crown block, the crown block can retract and lower the spreader, and the crown block can also move longitudinally and laterally along the bridge .

On the basis of the above technical solution, the telescopic device includes a sleeve and a telescopic joint, the outer wall of the telescopic joint is held against the inner wall of the sleeve, and the telescopic joint can slide relative to the sleeve, Both the sleeve column and the expansion joint are provided with a plurality of pin holes at different heights, and when the sleeve column and the expansion joint slide relative to each other, the pin holes on the sleeve column and the expansion joint can be connected.

On the basis of the above technical solution, the bottom ends of the middle outrigger and the rear outrigger are also provided with rotatable flanges, the running device is connected with the rotatable flanges, and the rotatable flanges can rotate around the vertical Rotate about the axis of the bridge deck.

On the basis of the above technical solution, the rear outrigger further includes an upper beam on the rear outrigger, one end of the folding device is connected to the first beam, and the other end is connected to the rear outrigger beam.

On the basis of the above technical solution, the turning device is a hydraulic cylinder.

On the basis of the above technical solution, the crane further includes a longitudinal movement mechanism, the main beam is provided with a main beam track, and the longitudinal movement mechanism can slide along the main beam track.

On the basis of the above technical solution, the crane further includes a traversing mechanism, and the traversing mechanism drives the crane to move laterally along the bridge.

On the basis of the above technical solution, the traverse mechanism is a hydraulic oil cylinder.

At the same time, the present invention also provides an efficient, stable and safe erection method for the steel bridge deck under the condition that the height and width of the construction space are limited and the bearing capacity of the existing structure is limited.

For achieving above object, the technical scheme that the present invention takes is:

A method of using the above-mentioned leg-lifting rack rack, the method includes the following steps:

Lay the erecting machine track, move the crane to the rear end of the leg-lifting erecting machine, lift the front outrigger, move the leg-lifting erecting machine forward to the next section, lower the front outrigger and fix it on the railway main truss On the beam, complete the hole, and at the same time, use the pallet truck to transport the steel bridge panel to the rear of the leg lifter;

Move the crown block to the front end of the leg-lifting frame machine, fold the rear outrigger upwards, and transport the steel bridge panel to the space between the rear outrigger and the middle outrigger with the trolley;

Put down the rear outriggers, move the crane to the top of the steel bridge deck, lower the spreader to connect with the steel bridge deck, lift up the steel bridge deck, and exit the trolley;

The middle outrigger is lifted, and the crane carries the steel bridge deck to move longitudinally along the bridge, so that the steel bridge deck moves to the designed installation position, and the steel bridge deck moves forward to pass the middle outrigger, and then puts down the middle outrigger;

After the vertical bridge movement of the overhead crane is in place, adjust the horizontal bridge position of the steel bridge deck, and lower the spreader on the crane to place the steel bridge deck at the installation position;

Release the connection between the spreader and the steel bridge deck, put the spreader upwards, move the crane to the rear of the leg-lifting erector, lift the front legs upward, lay the erector track, and cycle to the next steel bridge deck installation until construction is complete.

On the basis of the above technical solution, a transverse movement mechanism is used to drive the steel bridge deck to move laterally along the bridge to adjust the transverse position of the steel bridge deck.

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

(1) The main girder of the leg lifting type erecting machine in the present invention adopts a segmented structure, and the joints are connected by inner pins, which is easy to dismantle.

(2) The functions of rear outrigger folding and middle outrigger telescopic function provide enough space for the position conversion of the large-volume steel bridge deck during the erection process when the width of the erecting machine is limited.

(3) The crane adopts a sunken U-shaped beam, which reduces the height of the whole machine and meets the requirements of limited space height.

(3) After the tie rod is set in the present invention, the forward tilt of the whole machine of the leg-lifting type trigger is effectively limited, and the safety accident caused by the forward tilt of the whole machine due to the flexible front legs is avoided.

(4) The lower connection of the middle and rear outriggers of the leg-lifting crane is designed as a rotatable flange, and the vertical and lateral movement functions of the crane can be realized through rotation.

(5) During the process of walking through the hole and feeding the board of the leg-lifting crane, the cranes are respectively located at the rear and the front of the leg-lifting crane, so that the crane can be used for counterweight, which effectively reduces the overall load. The weight of the machine is reduced, and the stability of the whole machine is improved.

Description of drawings

Fig. 1 is the structure schematic diagram of the overall structure schematic diagram of leg-lifting type board machine in the present invention;

Fig. 2 is the structural representation of main structure among the present invention;

Fig. 3 is the front view of front supporting leg among the present invention;

Fig. 4 is the left side view of front support leg among the present invention;

Fig. 5 is the front view of middle support leg in the present invention;

Fig. 6 is the left side view of middle supporting leg in the present invention;

Figure 7 is a front view of the rear outrigger in the present invention;

Fig. 8 is a left view of the rear outrigger in the present invention;

Fig. 9 is the front view of the crane of the present invention;

Fig. 10 is the left view of the crane of the present invention;

Fig. 11 is a schematic diagram of running through the hole and transporting the board of the leg-lifting board machine in the present invention;

Fig. 12 is a schematic diagram of the feeding board of the leg lifting type board machine in the present invention

Fig. 13 is a schematic diagram of the crane lifting plate of the leg lifting type lifting machine in the present invention

Fig. 14 is a schematic diagram of the forward movement of the platform of the leg-lifting platform crane in the present invention

Fig. 15 is a schematic diagram of the lowering of the crane of the leg-lifting crane in the present invention

Fig. 16 is a schematic diagram of the lifting device of the crane of the leg-lifting plank crane in the present invention

In the figure: 1-main structure, 11-main beam, 12-first beam, 13-second beam, 14-web plate of main beam, 2-supporting mechanism, 21-front outrigger, 211-top hinge of front outrigger Seat, 212-connection pin of front outrigger, 213-upper crossbeam of front outrigger, 214-lower crossbeam of front outrigger, 215-locking mechanism, 216-truss structure, 217-lift cylinder of front outrigger, 22-middle Outrigger, 221-middle outrigger lifting cylinder, 222-middle outrigger pin, 23-rear outrigger, 231-folding device, 232-rear outrigger upper beam, 233-rear outrigger lower beam, 234- Rear outrigger connecting pin, 235-supporting part, 236-tie rod, 3-lifting device, 31-crown, 311-longitudinal movement mechanism, 312-transverse movement mechanism, 313-fixed pulley mechanism, 314-winch, 315 -Contact beam, 316-wire rope, 317-U-beam, 32-sling, 4-telescopic device, 41-column, 42-telescopic joint, 43-pin hole, 5-running device, 6-rotatable flange , 7-carriage plate, 8-steel bridge deck, 9-railway main truss beam, 100-plate machine track.

detailed description

The present invention will be described in further detail below in conjunction with the accompanying drawings.

Referring to FIG. 1 and FIG. 2 , the present invention provides a leg lifter, which includes a main structure 1 , a supporting mechanism 2 , and a lifting device 3 .

The main body structure 1 comprises two opposite main beams 11, the two ends of the two main beams 11 are fixed with the first cross beam 12 and the second cross beam 13 connecting the two main beams 11, in order to prevent the main beam 11 side bending and "eight The "" character is deformed, the main beam 11 adopts a segmented structure, and the joints of two adjacent segments are connected by inner pins, which is easy to dismantle. Wherein the main girder web 14 is set as a hole structure, which reduces the windward area and improves the overall stability.

The supporting mechanism 2 includes a front leg 21 , a middle leg 22 and a rear leg 23 fixed on two main beams 11 . Front supporting leg 21, middle supporting leg 22 and rear supporting leg 23 are all provided with telescopic device 4, and telescopic device 4 can make front supporting leg 21, middle supporting leg 22 and rear supporting leg 23 elongation and contraction.

Referring to Fig. 3 and Fig. 4, in the present invention, the telescopic device 4 includes a sleeve column 41 and a telescopic joint 42. The sleeve column 41 slides relatively, and the required external force can usually be provided by a lifting cylinder. Both the sleeve column 41 and the expansion joint 42 are provided with a plurality of pin holes 43 at different heights. When the sleeve column 41 and the expansion joint 42 slide relatively, the pin holes 43 on the sleeve column 41 and the expansion joint 42 can communicate. Since a plurality of pin holes 43 at different height positions are provided, the heights of the front leg 21 , the middle leg 22 and the rear leg 23 can be changed.

Front outrigger 21 is mainly composed of front outrigger upper hinge seat 211, front outrigger connecting pin 212, front outrigger upper beam 213, front outrigger lower beam 214, locking mechanism 215, truss structure 216, front outrigger lifting Oil cylinder 217, sleeve post 41 and expansion joint 42 form. The front leg 21 passes through the upper hinge seat 211 of the front leg and is connected to the main beam 11 through the front leg connecting pin shaft 212 . Adopting this flexible installation method ensures that the front outrigger 21 is vertically and stably supported on the railway main truss beam 9 at the end of the hole-passing operation, ensuring that the top surface of the railway main truss beam 9 is self-adaptive after the hole is passed. A truss structure 216 is added at the upper end, which can prevent the quadrilateral structure from running off, side bending and enhance the stability of the outriggers. Locking mechanism 215 is installed on the lower beam 214 of the front supporting leg, so that the bottom of the whole supporting leg falls on the main truss beam 9 of the railway, and is tightened by screw thread. Nylon pads or felts are laid in the middle, and the supporting legs are completely fixed with the railway main truss beam 9 to ensure the stability of the beam erection operation.

5 and 6 , the middle leg 22 is composed of a middle leg lifting cylinder 221 , a sleeve column 41 , a middle leg expansion joint 42 , a middle leg pin 222 and a running device 5 . The middle leg 22 is telescopic by means of an oil cylinder and carried by the pin shaft 222 of the middle leg. The sleeve column 41 and the telescopic joint 42 utilize the pin hole 43 to change the height of the legs. The bottom end of the middle leg 22 is also provided with a rotatable flange 6, the traveling device 5 is connected with the rotatable flange 6, and the rotatable flange 6 can rotate around an axis perpendicular to the bridge deck. When the rotatable flange 6 is rotated and the traveling device 5 is adjusted by 90°, the switch between the longitudinal movement and the lateral movement can be realized.

7 and 8, the rear leg 23 is composed of a folding device 231, a rear leg upper beam 232, a sleeve column 41, an expansion joint 42, a rear leg lower beam 233, a rear leg connecting pin 234, and a running The device 5, the supporting part 235 and the pull rod 236 are composed. The folding device 231 in the present invention is a hydraulic oil cylinder, wherein one end of the folding device 231 is connected with the first beam 12 , and the other end is connected with the upper beam 232 of the rear leg. Back support leg 23 utilizes turning device 231 to turn back upwards when feeding the beam, and provides enough space for transporting plate trolley 7 transport plates to enter. A supporting part 235 is provided below, with locking nuts, extending to the bridge deck for support, and forming a stable supporting surface with the front leg 21 during the erection process. The bottom end of the rear supporting leg 23 is also provided with a rotatable flange 6, and the traveling device 5 is connected with the rotatable flange 6, and the rotatable flange 6 can rotate around an axis perpendicular to the bridge deck. When the rotatable flange 6 is rotated and the traveling device 5 is adjusted by 90°, the switch between the longitudinal movement and the lateral movement can be realized. Setting the pull rod 236 can play a role of longitudinal limit, preventing the leg-lifting trigger from tilting forward.

Referring to Fig. 9 and Fig. 10, the hoisting device 3 includes a crane 31 and a spreader 32, the spreader 32 is arranged under the crane 31, and the crane 31 can retract and lower the spreader 32. The crane 31 also includes a longitudinal movement mechanism 311 , a transverse movement mechanism 312 , a fixed pulley mechanism 313 , a winch 314 , a connecting beam 315 , a wire rope 316 and a U-shaped beam 317 . Wherein, the main beam 11 is provided with a main beam track, and the longitudinal movement mechanism 311 utilizes the main beam track and travels on steel wheels. Lateral movement then adopts transverse movement mechanism 312 to push fixed pulley mechanism 313 to move and realize. Wherein, the traverse mechanism 312 is a hydraulic oil cylinder. One side of the left and right vertical movement mechanism 311 is fixedly connected and the other side is hinged to form a rigid and flexible structure, which can adapt to the width of the track and is convenient for adjustment. The hanger 32 is provided with an auxiliary hook for leveling when the steel bridge deck 8 is hoisted. In addition, the sunken U-shaped beam 317 is adopted to reduce the height of the whole machine of the leg lifter.

The present invention also provides a method for using the above-mentioned leg-lifting rack rack, the method includes the following steps:

S1. As shown in Figure 11, lay the erection machine track 100, move the crane 31 to the rearmost end of the leg lifter, lift the front leg 21, and move the leg lifter forward to the next section , the front outrigger 21 is lowered and fixed on the railway main truss beam 9 to complete the hole, and at the same time, the steel bridge deck 8 is transported to the rear of the leg-lifting type erecting machine by using the pallet truck 7 .

S2. As shown in Figure 12, move the crown block 31 to the front end of the leg-lifting frame machine, fold the rear outrigger 23 upwards, and transport the steel bridge deck 8 to the rear outrigger 23 and middle outrigger 22 with the trolley 7 between.

S3. Referring to Fig. 13, put down the rear outrigger 23, move the crane 31 to the top of the steel bridge deck 8, lower the hanger 32 to connect with the steel bridge deck 8, lift the steel bridge deck 8, and the trolley 7 exits.

S4. As shown in Figure 14, the middle outrigger 22 is lifted, and the crane 31 carries the steel bridge deck 8 to move longitudinally along the bridge, so that the steel bridge deck 8 moves to the designed installation position, and the steel bridge deck 8 moves forward to pass the middle outrigger After 22, the middle support leg 22 is put down.

S5. Referring to Fig. 15, after the crane 31 is moved in the longitudinal bridge direction, adjust the position of the steel bridge deck 8 in the transverse bridge direction, and the crane 31 lowers the spreader 32, so that the steel bridge deck 8 is placed at the installation position.

S6. Referring to Fig. 16, remove the connection between the spreader 32 and the steel bridge deck 8, put the spreader 32 upwards, move the crane 31 to the rearmost side of the leg lifter, and lift the front legs 21 upwards, Lay the erection machine track, cycle to the next steel bridge deck 8 for installation, until the construction is completed.

The present invention is not limited to the above-mentioned embodiments. For those of ordinary skill in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, and these improvements and modifications are also considered protection of the present invention. within range. The content not described in detail in this specification belongs to the prior art known to those skilled in the art.

Claims (10)

1. A leg lifter, characterized in that it comprises: The main structure (1), which includes two main beams (11) arranged oppositely, and the two ends of the two main beams (11) are fixed with a first beam (12) connecting the two main beams (11) and the second beam (13), the main beam (11) is a segmented structure; A support mechanism (2), comprising front legs (21), middle legs (22) and rear legs (23) fixed on two main beams (11), the front legs (21) , the middle leg (22) and the rear leg (23) are all provided with telescopic devices (4), and the telescopic device (4) can make the front leg (21), the middle leg (22) and the rear leg The legs (23) are elongated and contracted, and the rear legs (23) also include a turning device (231), the turning device (231) is connected with the first beam (12), and the turning device (231) driving the rear outrigger (23) to fold around the first beam (12), and the lower part of the middle outrigger (22) and the rear outrigger (23) is also provided with a running device (5), The traveling device (5) can travel longitudinally and laterally along the bridge; and Lifting device (3), which includes a crane (31) and a spreader (32), the spreader (32) is arranged below the crane (31), and the crane (31) can be retracted and lowered The hanger (32) and the crane (31) can also move longitudinally and laterally along the bridge. 2. The leg lifting crane according to claim 1, characterized in that: the telescopic device (4) comprises a sleeve column (41) and a telescopic joint (42), and the outer wall of the telescopic joint (42) is against Hold on the inner wall of the sleeve (41), and the expansion joint (42) can slide relative to the sleeve (41), the sleeve (41) and the expansion joint (42) are equipped with multiple Pin holes (43) at different height positions, when the sleeve column (41) and the expansion joint (42) slide relatively, the pin holes (43) on the sleeve column (41) and the expansion joint (42) can communicate . 3. The leg lifter according to claim 1, characterized in that: the bottom ends of the middle leg (22) and the rear leg (23) are also provided with a rotatable flange (6), so The running device (5) is connected with the rotatable flange (6), and the rotatable flange (6) can rotate around an axis perpendicular to the bridge deck. 4. The leg lifting machine according to claim 1, characterized in that: the rear leg (23) also includes an upper beam (232) on the rear leg, and one end of the folding device (231) is connected to The first beam (12) is connected, and the other end is connected with the rear leg beam (232). 5. The leg lifting trigger according to claim 1 or 4, characterized in that: the folding device (231) is a hydraulic cylinder. 6. The leg lifting crane according to claim 1, characterized in that: the crane (31) also includes a longitudinal movement mechanism (311), the main beam (11) is provided with a main beam track, the The longitudinal movement mechanism (311) can slide along the main beam track. 7. The leg lifting type crane according to claim 1, characterized in that: the crane (31) further comprises a traverse mechanism (312), and the traverse mechanism (312) drives the crane ( 31) Move laterally along the bridge. 8. The leg lifting trigger according to claim 1, characterized in that: the traverse mechanism (312) is a hydraulic cylinder. 9. A method of utilizing the leg-lifting rack board rack board according to claim 1, characterized in that the method comprises the following steps: Lay the racking machine track (100), move the crane (31) to the rearmost end of the leg-lifting racking machine, lift the front legs (21), and move the leg-lifting racking machine forward to the next section. The outriggers (21) are lowered and fixed on the railway main truss beam (9) to complete the hole passing, and at the same time, the steel bridge deck (8) is transported to the rear of the leg-lifting type erecting machine by the pallet truck (7); Move the crown block (31) to the front end of the leg-lifting frame machine, fold the rear outrigger (23) upwards, and transport the steel bridge deck (8) to the rear outrigger (23) and middle support with the pallet truck (7) between the legs (22); Put down the rear outrigger (23), move the crane (31) to the top of the steel bridge deck (8), lower the hanger (32) to connect with the steel bridge deck (8), lift the steel bridge deck (8), and transport the trolley (7) Exit; The middle outrigger (22) is lifted, and the crane (31) carries the steel bridge deck (8) to move longitudinally along the bridge, so that the steel bridge deck (8) moves to the designed installation position, and the steel bridge deck (8) moves forward through the middle After the supporting leg (22), put down the middle supporting leg (22); After the crane (31) moves longitudinally in place, adjust the horizontal position of the steel bridge deck (8), lower the crane (31) to lower the spreader (32) so that the steel bridge deck (8) is placed at the installation position; Release the connection between the spreader (32) and the steel bridge deck (8), put the spreader (32) upwards, move the crane (31) to the rearmost position of the leg lifter, and lift the front outrigger (21) upwards Get up, lay the frame machine track (100), circulate to next steel bridge deck (8) and install, until construction is finished. 10. The slab erection method according to claim 9, characterized in that: a transverse movement mechanism (312) is used to drive the steel bridge deck (8) to move laterally along the bridge to carry out the horizontal position of the steel bridge deck (8). Adjustment.