Bridge deck crane for bridge erection construction

Abstract

The utility model discloses a bridge deck crane for bridge erection construction, which relates to the technical field of bridge construction and comprises a crane base, a crane stand column driven by a servo motor to rotate is rotatably connected to the top end of the crane base, a top seat is fixed to the top end of the crane stand column, and a suspension arm is fixed to the side wall of the top seat. The driving boxes are arranged on the front side and the rear side of the bottom end of the cross beam in a sliding mode, and the longitudinal moving driving mechanism drives the two sets of driving boxes to move in the opposite direction so as to adapt to bridge prefabricated parts of different lengths. Meanwhile, L-shaped clamping hanging plates are arranged on the left side and the right side of the bottom end of a driving box in a sliding mode, and the two L-shaped clamping hanging plates are driven by a longitudinal movement driving mechanism to move in the opposite direction or the opposite direction so that the bridge deck crane can adapt to bridge prefabricated parts with different widths, and therefore the bridge deck crane for bridge erecting construction can be adaptively adjusted according to the specifications of the bridge prefabricated parts; and not only can the bridge prefabricated parts with different lengths be conveniently hoisted, but also the bridge prefabricated parts with different widths can be conveniently hoisted.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge construction, in particular to a deck crane for bridge erection construction. Background Technique

[0002] A bridge generally refers to a building erected across a river or a lake for pedestrians and vehicles to pass through. With the rapid development of social economy and modernization drive, bridge construction has also developed rapidly. At present, during the bridge erection construction process, bridge deck slabs generally need to be hoisted to different positions by corresponding deck cranes for corresponding bridge precast components.

[0003] For example, the utility model patent with the application number 202121416912.9 discloses a deck crane for the installation of steel box girders for bridges, including a bottom plate, a pulley mechanism and a fixing mechanism. A rotating rod is inserted through the outer wall of the top of the bottom plate through a bearing, and a reduction motor is installed on the outer wall of the top of the bottom plate through a bracket. The output shaft of the reduction motor is in transmission connection with the rotating rod through the pulley mechanism, and a mounting plate is welded to the outer wall of the top of the rotating rod.

[0004] Based on the prior art, it is found that most of the existing deck cranes have a single structure, and the adjustability of the hoisting mechanism is not large, which is not convenient for hoisting bridge precast components of different lengths and widths. As a result, the deck crane cannot be adjusted adaptively according to the specifications of the bridge precast components, and it is not convenient to lift bridge precast components of different specifications, making it inconvenient to use and having low practicability. Therefore, the utility model proposes a deck crane for bridge erection construction to solve the problems existing in the prior art. Content of the Utility Model

[0005] Aiming at the above problems, the purpose of the utility model is to provide a deck crane for bridge erection construction, which solves the problems that the existing deck crane is not convenient for hoisting bridge precast components of different lengths and widths, so that the deck crane cannot be adjusted adaptively according to the specifications of the bridge precast components.

[0006] To achieve the purpose of the utility model, the utility model is realized through the following technical solutions: A deck crane for bridge erection construction includes a crane base. The top end of the crane base is rotatably connected to a crane column driven to rotate by a servo motor. The top of the crane column is fixed with a top seat. A boom is fixed to the side wall of the top seat. A lifting block is hoisted on one side of the boom away from the top seat through a winding mechanism. The bottom end of the lifting block is hoisted with a cross beam. On both sides of the bottom end of the cross beam, driving boxes driven to displace by a longitudinal movement driving mechanism are slidably arranged. On both sides of the bottom end of the driving box, L-shaped clamping and hoisting plates driven to displace by a transverse movement driving mechanism are slidably arranged.

[0007] A further improvement lies in that: the servo motor is fixed inside the crane base, a first sprocket is fixed to the output end of the servo motor, the bottom of the crane column penetrates through the crane base internally through a bearing and is fixed with a second sprocket adapted to the first sprocket, and a chain is sleeved on the first sprocket and the second sprocket together.

[0008] A further improvement lies in that: a support ring is arranged above the crane base, a plurality of balls in contact with the top end of the crane base are fixed equidistantly at the bottom end of the support ring, first reinforcing rods are symmetrically fixed at the top end of the support ring, one end of each first reinforcing rod away from the support ring is fixedly connected with the crane column, and a second reinforcing rod is fixed between the crane column and the boom.

[0009] A further improvement lies in that: the coil taking mechanism includes a coil taker fixed to the top end of the top seat and a traction rope fixed to the top end of the hanging block, a pulley is fixed at one end of the boom away from the top seat, one end of the traction rope away from the hanging block passes through the pulley and is wound around the output take-up wheel of the coil taker, and the outer walls of the four sides of the hanging block and the four sides of the top end of the cross beam are respectively connected by suspension ropes.

[0010] A further improvement lies in that: the longitudinal movement driving mechanism includes a first servo motor fixed to the outer walls on both sides of the cross beam and a one-way lead screw rotatably connected to both sides inside the cross beam and driven to rotate by the first servo motor, a threaded plate is threadedly sleeved on the one-way lead screw, the bottom end of the threaded plate slidably penetrates through the bottom end of the cross beam and is fixedly connected with the driving box, the top end of the threaded plate slidably penetrates through the top end of the cross beam and is fixed with a top plate, and rollers in contact with the top end of the cross beam are symmetrically fixed at the bottom end of the top plate.

[0011] A further improvement lies in that: the transverse movement driving mechanism includes a second servo motor fixed to the outer wall of the driving box and a bidirectional lead screw rotatably connected to the inside of the driving box and driven to rotate by the second servo motor, threaded blocks are threadedly sleeved on both sides of the bidirectional lead screw, the top end of the L-shaped clamping and hanging plate slidably penetrates into the driving box and is fixedly connected with the bottom end of the threaded block, support blocks are fixed on the outer walls on both sides of the threaded block, and rollers in contact with the bottom end inside the driving box are fixed at the bottom ends of the support blocks.

[0012] A further improvement lies in that: the opposite ends of the two L-shaped clamping and hanging plates are both chamfered and inclined, anti-slip pads are fixedly embedded on the opposite sides of the two L-shaped clamping and hanging plates, a bottom plate is fixed to the bottom end of the crane base, and mounting bolts are threadedly penetrated through the bottom plate.

[0013] The beneficial effects of the present utility model are as follows: The present utility model includes a crane base. By slidably arranging driving boxes 8 on the front and rear sides of the bottom end of the cross beam 7 and driving the two groups of driving boxes 8 to move towards each other or in opposite directions through a longitudinal movement driving mechanism, it can adapt to bridge precast members of different lengths. At the same time, by slidably arranging L-shaped clamping and lifting plates 9 on the left and right sides of the bottom end of the driving box 8 and driving the two groups of L-shaped clamping and lifting plates 9 to move towards each other or in opposite directions through a longitudinal movement driving mechanism, it can adapt to bridge precast members of different widths. Thus, the bridge deck crane for bridge erection construction can be adaptively adjusted according to the specifications of the bridge precast members, which is not only convenient for hoisting bridge precast members of different lengths, but also convenient for hoisting bridge precast members of different widths, with convenient use and high practicability. Description of the Drawings

[0014] Figure 1 is the front view of the present utility model;

[0015] Figure 2 is the sectional view of the crane base of the present utility model;

[0016] Figure 3 is the sectional view of the side of the cross beam of the present utility model;

[0017] Figure 4 is the sectional view of the driving box of the present utility model.

[0018] Wherein: 1. Crane base; 2. Servo motor; 3. Crane column; 4. Top seat; 5. Boom; 6. Suspension block; 7. Cross beam; 8. Driving box; 9. L-shaped clamping and lifting plate; 10. First sprocket; 11. Second sprocket; 12. Support ring; 13. First reinforcing bar; 14. Second reinforcing bar; 15. Take-up machine; 16. Traction rope; 17. Pulley; 18. Suspension rope; 19. First servo motor; 20. Unidirectional lead screw; 21. Threaded plate; 22. Top plate; 23. Second servo motor; 24. Bidirectional lead screw; 25. Threaded block; 26. Support block; 27. Anti-slip pad; 28. Bottom plate. Detailed Embodiment

[0019] To deepen the understanding of the present utility model, the following will further elaborate on the present utility model in combination with embodiments. These embodiments are only used to explain the present utility model and do not constitute a limitation on the protection scope of the present utility model.

[0020] According to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4As shown in the figure, this embodiment provides a deck crane for bridge erection construction, including a crane base 1 with a hollow design. During actual operation, the crane base 1 is fixed to the ground of a crane or the construction site through mounting bolts. A servo motor 2 is fixed inside the crane base 1 through bolts. The top end of the crane base 1 is rotatably connected to a crane column 3 through a bearing, and the crane column 3 is driven to rotate by the servo motor 2. The bottom end of the crane base 1 is welded and fixed with a bottom plate 28, and mounting bolts penetrate through the bottom plate 28 in a threaded manner. The bottom end of the crane column 3 is located inside the crane base 1 and is rotatably connected to the top end of the bottom plate 28 through a bearing. The top end of the crane column 3 is fixed with a top seat 4 through bolts. A boom 5 is fixed to the right outer wall of the top seat 4 through bolts. A lifting block 6 is hoisted on one side of the boom 5 away from the top seat 4 through a wire winding mechanism, and the lifting block 6 is driven to lift and lower through the wire winding mechanism. A cross beam 7 is hoisted at the bottom end of the lifting block 6, and the cross beam 7 is lifted and lowered synchronously with the lifting block 6. Hollow-designed driving boxes 8 are slidably arranged on the front and rear sides of the bottom end of the cross beam 7, and the driving boxes 8 are driven to displace through a longitudinal displacement driving mechanism. L-shaped clamping and lifting plates 9 for clamping and hoisting bridge precast components are slidably arranged on both sides of the bottom end of the driving box 8, and the L-shaped clamping and lifting plates 9 are driven to displace through a transverse displacement driving mechanism. By slidably arranging the driving boxes 8 on the front and rear sides of the bottom end of the cross beam 7 and driving the two driving boxes 8 to move towards each other or in opposite directions through the longitudinal displacement driving mechanism, it can adapt to bridge precast components of different lengths. At the same time, by slidably arranging the L-shaped clamping and lifting plates 9 on the left and right sides of the bottom end of the driving box 8 and driving the two L-shaped clamping and lifting plates 9 to move towards each other or in opposite directions through the longitudinal displacement driving mechanism, it can adapt to bridge precast components of different widths, so that the deck crane for bridge erection construction can be adaptively adjusted according to the specifications of the bridge precast components.

[0021] A first sprocket 10 is fixed on the output shaft of the servo motor 2. The bottom of the crane column 3 penetrates through the crane base 1 through a bearing and is fixed with a second sprocket 11. The second sprocket 11 is adapted to the first sprocket 10, and a chain is sleeved on both the first sprocket 10 and the second sprocket 11. When the servo motor 2 is started to drive the first sprocket 10 to rotate, the first sprocket 10 drives the second sprocket 11 to rotate through the chain, and then the second sprocket 11 drives the crane column 3 to rotate.

[0022] Above the crane base 1, there is an annular support ring 12. The bottom end of the support ring 12 is fixed with evenly distributed balls in a ring shape, and the balls are in contact with the top end of the crane base 1 to support the support ring 12. Symmetrically fixed to the top end of the support ring 12 are first reinforcing rods 13. One end of the first reinforcing rod 13 away from the support ring 12 is fixedly connected to the crane column 3. The first reinforcing rod 13 plays an auxiliary supporting role for the crane column 3 to ensure the reliability of the crane column 3. A second reinforcing rod 14 is fixed between the crane column 3 and the boom 5. The second reinforcing rod 14 plays an auxiliary supporting role for the boom 5 to improve the reliability of the boom 5.

[0023] The coiling mechanism includes a coiling machine 15 and a towing rope 16. The coiling machine 15 is fixed to the top of the top seat 4 by bolts, and the towing rope 16 is fixed to the top of the hanging block 6. A pulley 17 is fixed to one end of the hanging arm 5 away from the top seat 4. One end of the towing rope 16 away from the hanging block 6 passes through the pulley 17 and is wound around the output coiling wheel of the coiling machine 15. The coiling machine 15 winds or unwinds the towing rope 16 to drive the hanging block 6 to rise or fall by means of the towing rope 16. The outer walls on the four sides of the hanging block 6 and the four sides of the top of the cross beam 7 are respectively connected by suspension ropes 18, and the cross beam 7 is suspended below the hanging block 6 by the four suspension ropes 18.

[0024] The longitudinal movement driving mechanism includes a first servo motor 19 and a unidirectional lead screw 20. The first servo motor 19 is fixed to the outer walls on the front and rear sides of the cross beam 7 by bolts. There are two groups of unidirectional lead screws 20, which are rotatably connected to the front and rear sides inside the cross beam 7 through bearings. One end of the unidirectional lead screw 20 close to the first servo motor 19 passes through the cross beam 7 to the outside through a bearing and is fixedly connected to the output end of the first servo motor 19. A threaded plate 21 is threadedly sleeved on the unidirectional lead screw 20. The bottom end of the threaded plate 21 slides through the bottom end of the cross beam 7 and is fixedly connected to the driving box 8. The top end of the threaded plate 21 slides through the top end of the cross beam 7 and is fixed with a top plate 22. Through grooves adapted to the threaded plate 21 are opened at both the upper and lower ends of the cross beam 7. Rollers that abut against the top of the cross beam 7 are symmetrically fixed to the bottom end of the top plate 22 to provide support for the top plate 22, so as to provide auxiliary support for the threaded plate 21 and avoid excessive force on the unidirectional lead screw 20. The first servo motor 19 drives the unidirectional lead screw 20 to rotate, so that the threaded plate 21 threadedly sleeved on the unidirectional lead screw 20 displaces along the unidirectional lead screw 20 and drives the driving box 8 to slide and displace at the bottom end of the cross beam 7.

[0025] The transverse movement driving mechanism includes a second servo motor 23 and a bidirectional lead screw 24. The second servo motor 23 is fixed to the left outer wall of the driving box 8 by bolts. The bidirectional lead screw 24 is rotatably connected to the inside of the driving box 8 through a bearing. The bidirectional lead screw 24 passes through the driving box 8 to the outside through a bearing and is fixedly connected to the output end of the second servo motor 23. The second servo motor 23 drives the bidirectional lead screw 24 to rotate. Threaded blocks 25 are threadedly sleeved on both sides of the bidirectional lead screw 24 and the threaded connection directions are opposite. The top end of the L-shaped clamping hanging plate 9 slides through to the inside of the driving box 8 and is fixedly connected to the bottom end of the threaded block 25. A through groove adapted to the L-shaped clamping hanging plate 9 is opened at the bottom end of the driving box 8. Support blocks 26 are fixed to the outer walls on both sides of the threaded block 25. Rollers that abut against the bottom end inside the driving box 8 are fixed to the bottom ends of the support blocks 26 to provide support for the support blocks 26, so as to provide auxiliary support for the threaded block 25 and avoid excessive force on the bidirectional lead screw 24. The second servo motor 23 drives the bidirectional lead screw 24 to rotate, so that the threaded blocks 25 on both sides of the bidirectional lead screw 24 displace towards or in the opposite direction along the bidirectional lead screw 24 to drive the two groups of L-shaped clamping hanging plates 9 to displace and clamp and lift the bridge precast member.

[0026] Both opposite ends of the two groups of L-shaped clamping suspension plates 9 are chamfered and inclined. Anti-slip pads 27 are fixedly embedded on both opposite sides of the two groups of L-shaped clamping suspension plates 9, playing an anti-slip role to prevent the precast bridge components from slipping easily.

[0027] When it is necessary to hoist and move the precast bridge components during the bridge erection construction, first start the reel-taking mechanism to drive the lifting block 6 to drive the cross beam 7 to descend to the position of the precast bridge component on the ground. Then start the longitudinal movement driving mechanism to drive the two driving boxes 8 to move towards each other or in opposite directions until the distance between the two driving boxes 8 matches the length of the precast bridge component. At the same time, start the transverse movement driving mechanism to drive the L-shaped clamping suspension plates 9 on both sides of the bottom end of the driving box 8 to move towards each other until the precast bridge component is clamped between the left and right two groups of L-shaped clamping suspension plates 9. Then start the reel-taking mechanism again to drive the lifting block 6 to drive the cross beam 7 to rise, and start the servo motor 2 to drive the crane column 3 to rotate until the clamped precast bridge component is transferred to an appropriate position. Finally, start the reel-taking mechanism to drive the lifting block 6 to drive the cross beam 7 to descend until the precast bridge component descends to the position to be erected and the clamping is released, realizing the hoisting work of the precast bridge component during the bridge erection construction.

[0028] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A bridge deck crane for bridge erection construction, comprising a crane base (1), characterized in that: The top of the crane base (1) is rotatably connected to a crane column (3) driven to rotate by a servo motor (2); a top seat (4) is fixed to the top of the crane column (3); a suspension arm (5) is fixed to the side wall of the top seat (4); a suspension block (6) is suspended on the side of the suspension arm (5) away from the top seat (4) through a reeling mechanism; a crossbeam (7) is suspended on the bottom end of the suspension block (6); a drive box (8) driven to move by a longitudinal drive mechanism is slidably provided on both sides of the bottom end of the crossbeam (7); and an L-shaped clamping suspension plate (9) driven to move by a transverse drive mechanism is slidably provided on both sides of the bottom end of the drive box (8).

2. A bridge deck crane for bridge erection construction according to claim 1, characterized in that: The servo motor (2) is fixed inside the crane base (1); a first sprocket (10) is fixed to the output end of the servo motor (2); the bottom of the crane column (3) passes through the inside of the crane base (1) through a bearing and is fixed with a second sprocket (11) adapted to the first sprocket (10); a chain is sleeved on the first sprocket (10) and the second sprocket (11).

3. A bridge deck crane for bridge erection construction according to claim 1, characterized in that: A support ring (12) is provided above the crane base (1), and balls are equidistantly fixed to the bottom end of the support ring (12) and contact the top end of the crane base (1), and a first reinforcing rod (13) is symmetrically fixed to the top end of the support ring (12), and one end of the first reinforcing rod (13) away from the support ring (12) is fixedly connected to the crane column (3), and a second reinforcing rod (14) is fixed between the crane column (3) and the boom (5).

4. A bridge deck crane for bridge erection construction according to claim 1, characterized in that: The reeling mechanism comprises a reeling machine (15) fixed to the top of a top seat (4) and a traction rope (16) fixed to the top of a suspension block (6); a pulley (17) is fixed to one end of the suspension arm (5) away from the top seat (4); one end of the traction rope (16) away from the suspension block (6) passes through the pulley (17) and is wound around a reeling wheel at an output end of the reeling machine (15); and the four outer walls of the suspension block (6) and the four sides of the top of the cross beam (7) are connected respectively by suspension ropes (18).

5. The bridge deck crane for bridge erection construction according to claim 1, characterized in that: The longitudinal drive mechanism comprises a first servo motor (19) fixed to the outer walls of both sides of the cross beam (7) and a one-way screw (20) rotatably connected to both sides of the interior of the cross beam (7) and driven to rotate by the first servo motor (19); a threaded plate (21) is threadedly sleeved on the one-way screw (20); the bottom end of the threaded plate (21) slides through the bottom end of the cross beam (7) and is fixedly connected to the drive box (8); the top end of the threaded plate (21) slides through the top end of the cross beam (7) and is fixed with a top plate (22); and the bottom end of the top plate (22) is symmetrically fixed with rollers that abut against the top end of the cross beam (7).

6. A bridge deck crane for bridge erection construction according to claim 1, characterized in that: The transverse driving mechanism comprises a second servo motor (23) fixed to the outer wall of the driving box (8) and a bidirectional screw rod (24) rotatably connected to the inside of the driving box (8) and driven to rotate by the second servo motor (23), both sides of the bidirectional screw rod (24) are threadedly sleeved with thread blocks (25), the top end of the L-shaped clamping hanging plate (9) slides through the inside of the driving box (8) and is fixedly connected to the bottom end of the thread block (25), the outer walls on both sides of the thread block (25) are fixed with support blocks (26), and the bottom end of the support block (26) is fixed with a roller that contacts the bottom end of the inside of the driving box (8).

7. A bridge deck crane for bridge erection construction according to claim 1, characterized in that: The two groups of L-shaped clamping hanging plates (9) are both chamfered and tilted at one opposite end, and anti-skid pads (27) are embedded and fixed on one opposite side of the two groups of L-shaped clamping hanging plates (9). A bottom plate (28) is fixed at the bottom end of the crane base (1), and mounting bolts are threaded through the bottom plate (28).

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