Hoisting device for small box girder construction

Abstract

The utility model relates to a hoisting device for small box girder construction, which belongs to the technical field of box girder construction and comprises an electric slide rail, a hoisting plate arranged on the outer side of the electric slide rail, a rotating part rotatably mounted at the bottom of the hoisting plate, connecting rods rotatably connected to two ends of the rotating part, and fixing plates arranged on two sides of the hoisting plate. Two limiting parts are fixedly connected to the sides, close to each other, of the two fixing plates. The clamping device has the advantages that the connecting rod and the rotating part are used in cooperation, then the other supporting frame can be driven to move, the two L-shaped clamps move in the same direction or opposite directions, the clamping device can adapt to small box girders of different sizes for use, the small box girders can be fixed between the two L-shaped clamps, and then the small box girders can be fixed between the two L-shaped clamps. And the piston rod of the air cylinder a extends out, so that the top end of the small box girder can be fixed by means of the clamping plate, and the small box girder is more stable in the hoisting process.

Description

Technical Field

[0001] This utility model relates to the field of box girder construction technology, and in particular to a hoisting device for small box girder construction. Background Technology

[0002] A beam-slab is the main load-bearing component of a bridge. It is a reinforced concrete slab consisting of beams and slabs connected together. During bridge construction, the beam-slab needs to be hoisted and installed in the appropriate position.

[0003] A search revealed a Chinese patent (authorization announcement number CN217126645U) disclosing an adjustable beam hoisting device, comprising a beam body, a first hoisting beam and a second hoisting beam perpendicular to each other above the beam body, first claws symmetrically arranged on the left and right sides of the beam body, multiple first rope grooves symmetrically arranged on the left and right sides of the first hoisting beam, with first hoisting ropes fitted onto the first rope grooves, the bottom of the first hoisting ropes connected to the first hanging ring at the top of the first claws via a first hook, second claws symmetrically arranged on the front and rear sides of the beam body, multiple second rope grooves symmetrically arranged on the front and rear sides of the second hoisting beam, with second hoisting ropes fitted onto the second rope grooves, the bottom of the second hoisting ropes connected to the second hanging ring at the top of the second claws via a second hook. This patented technology can adjust the hoisting of beams of different lengths and widths, improving the applicability and stability of the device.

[0004] However, the above-mentioned device still has some drawbacks in actual use. The most obvious one is that although the above-mentioned patent can adjust the lifting of beams and slabs of different lengths and widths, thereby improving the applicability and stability of the device, the pressure plate still needs to be removed after the beams and slabs are lifted and before installation. The operation is difficult and affects the lifting efficiency, and the unlocking operation has a high risk factor. Utility Model Content

[0005] In view of the above-mentioned problems existing in the prior art, the main purpose of this utility model is to provide a hoisting device for the construction of small box girders.

[0006] The technical solution of this utility model is as follows: a hoisting device for small box girder construction includes an electric slide rail, a hanging plate is provided on the outer side of the electric slide rail, a rotating component is rotatably installed at the bottom of the hanging plate, and connecting rods are rotatably connected to both ends of the rotating component. Fixed plates are provided on both sides of the hanging plate, and two limiting rods are fixedly connected to the side of the two fixed plates that are close to each other. Two support frames are slidably installed between the two limiting rods. L-shaped clamps are fixedly connected to the bottom of each support frame, and clamping plates are slidably connected to the inner walls of each L-shaped clamp. Cylinders a are fixedly installed at both ends of the top of each support frame, and the piston rods of cylinders a are fixedly connected to the corresponding clamping plates.

[0007] By adopting the above technical solution, the coordinated use of connecting rods and rotating parts can drive the movement of another support frame, causing the two L-shaped clamps to move in opposite directions. This allows for the use of small box girders of different sizes, enabling the small box girder to be fixed between the two L-shaped clamps. Subsequently, the piston rod of cylinder a extends, and the top of the small box girder can be fixed with the help of the clamping plate, making the small box girder more stable during hoisting.

[0008] In a preferred embodiment, a lifting assembly is provided on the top of the electric slide rail. The lifting assembly includes a column installed on the top of the electric slide rail, a crossbeam fixedly installed on one side of the column, and a wire rope electric hoist installed at one end of the bottom of the crossbeam. The output end of the wire rope electric hoist is connected to the hanging plate.

[0009] By adopting the above technical solution, the lifting and lowering of the suspended platform and small box girder can be achieved through the action of the wire rope electric hoist.

[0010] In a preferred embodiment, the electric slide rail is provided with a lateral movement component, which includes a slider that is slidably installed inside the electric slide rail. The top end of the slider is fixedly connected to a column, and the column is slidably connected to the outer wall of the electric slide rail.

[0011] By adopting the above technical solution, and through the combined use of electric slide rails and sliders, the horizontal movement of the column and clamping structure can be realized, so as to carry out the hoisting operation of the small box girder.

[0012] In a preferred embodiment, the crossbeam is provided with a longitudinal moving component, which includes a fixed groove formed inside the crossbeam. A screw is rotatably connected inside the fixed groove, and a threaded block is threadedly connected to the outer side of the screw. The threaded block is slidably connected to the inner wall of the fixed groove, and the threaded block is fixedly connected to a wire rope electric hoist.

[0013] By adopting the above technical solution, the rotation of the screw can drive the threaded block to slide in the fixed groove, thereby achieving the purpose of longitudinal movement of the small box girder.

[0014] In a preferred embodiment, the end of the connecting rod furthest from the rotating component is rotatably connected to the corresponding support frame.

[0015] By adopting the above technical solution, the clamping structure can operate stably.

[0016] In one preferred embodiment, a cylinder b is fixedly mounted on the top of one of the support frames, and the piston rod of the cylinder b is fixedly mounted to the bottom wall of the hanging plate.

[0017] By adopting the above technical solution, the extension and retraction of the piston rod of cylinder b can drive one of the support frames to slide on the limit rod.

[0018] In a preferred embodiment, the inner wall of the L-shaped clamp is provided with an inclined surface to facilitate loading, and a servo motor is fixedly installed on the outer side of the crossbeam. The output shaft of the servo motor extends into the interior of the fixing groove and is fixedly connected to the screw.

[0019] By adopting the above technical solution, the small box girder can be clamped, and by setting up a servo motor, a stable power source can be provided for the screw.

[0020] In one preferred embodiment, two supporting steel rods are fixedly installed between the column and the crossbeam.

[0021] By adopting the above technical solution and setting up supporting steel rods, the overall rigidity can be enhanced.

[0022] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0023] In this invention, when hoisting a small box girder, the extension and retraction of the piston rod of cylinder b can move one of the support frames. Through the cooperation of the connecting rod and the rotating part, the other support frame can be moved, causing the two L-shaped clamps to move in opposite directions. This allows it to accommodate small box girders of different sizes, enabling the small box girder to be fixed between the two L-shaped clamps. Then, by extending the piston rod of cylinder a, the top of the small box girder can be fixed with the help of the clamping plate, making the small box girder more stable during hoisting and eliminating the need for manual installation, thus increasing construction efficiency. Attached Figure Description

[0024] Figure 1 This utility model provides an overall perspective view of a hoisting device for small box girder construction;

[0025] Figure 2 This utility model provides a bottom view of a hoisting device for small box girder construction;

[0026] Figure 3 This utility model provides a partial schematic diagram of a hoisting device for the construction of small box girders;

[0027] Figure 4 This utility model provides a schematic diagram of the lifting plate of a hoisting device for the construction of small box girders.

[0028] Legend: 1. Electric slide rail; 2. Connecting rod; 3. Slider; 4. Column; 5. Crossbeam; 6. Servo motor; 7. Wire rope electric hoist; 8. Hanging plate; 9. Fixing groove; 10. Screw; 11. Support frame; 12. Cylinder a; 13. Limit rod; 14. Cylinder b; 15. Fixing plate; 16. Rotating component; 17. Clamping plate; 18. L-shaped clamp. Detailed Implementation

[0029] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0030] Reference Figure 1-4 A hoisting device for small box girder construction includes an electric slide rail 1. A lifting plate 8 is provided on the outer side of the electric slide rail 1. A rotating component 16 is rotatably mounted on the bottom of the lifting plate 8. Both ends of the rotating component 16 are rotatably connected to connecting rods 2. Fixed plates 15 are provided on both sides of the lifting plate 8. Two limiting rods 13 are fixedly connected to the side of the two fixed plates 15 that are close to each other. Two support frames 11 are slidably installed between the two limiting rods 13. L-shaped clamps 18 are fixedly connected to the bottom of each support frame 11. Clamping plates 17 are slidably connected to the inner walls of each L-shaped clamp 18. Cylinders a12 are fixedly mounted on both ends of the top of each support frame 11. The piston rods of the cylinders a12 are fixedly connected to the corresponding clamping plates 17. The fixed connection allows for the movement of one support frame 11 during the hoisting of the small box girder. The extension and retraction of the piston rod of cylinder b14 moves the other support frame 11, which in turn moves the other L-shaped clamps 18. This allows the two L-shaped clamps 18 to move in opposite directions, accommodating small box girders of different sizes. The small box girder is then fixed between the two L-shaped clamps 18. Subsequently, the extension of the piston rod of cylinder a12 secures the top of the small box girder with the help of the clamping plate 17, making the small box girder more stable during hoisting and eliminating the need for manual installation, thus increasing construction efficiency.

[0031] Specifically, the electric slide rail 1 is equipped with a lifting assembly at its top. This assembly includes a column 4 at the top of the electric slide rail 1, a crossbeam 5 fixedly installed on one side of the column 4, and a wire rope electric hoist 7 at one end of the bottom of the crossbeam 5. The wire rope electric hoist 7 enables the lifting of the suspended platform 8 and the small box girder. The output end of the wire rope electric hoist 7 is connected to the suspended platform 8. The electric slide rail 1 also has a lateral movement assembly inside, including a slider 3 slidably installed inside the electric slide rail 1. Through the cooperation of the electric slide rail 1 and the slider 3, the column 4 and the clamping structure can be moved laterally. The slider 3 moves horizontally to allow for the hoisting of the small box girder. The top of the slider 3 is fixedly connected to the column 4, and the column 4 is slidably connected to the outer wall of the electric slide rail 1. The interior of the crossbeam 5 is equipped with a longitudinal moving component, which includes a fixed groove 9 inside the crossbeam 5. A screw 10 is rotatably connected inside the fixed groove 9, and a threaded block is threadedly connected to the outside of the screw 10. By rotating the screw 10, the threaded block can slide within the fixed groove 9, thereby achieving the longitudinal movement of the small box girder. The threaded block is slidably connected to the inner wall of the fixed groove 9, and the threaded block is fixedly connected to the wire rope electric hoist 7.

[0032] Specifically, the end of the connecting rod 2 away from the rotating part 16 is rotatably connected to the corresponding support frame 11. A cylinder b14 is fixedly installed at the top of one of the support frames 11. Through the extension and retraction of the piston rod of the cylinder b14, one of the support frames 11 can be driven to slide on the limit rod 13. The piston rod of the cylinder b14 is fixedly installed on the bottom wall of the hanging plate 8. The inner wall of the L-shaped clamp 18 is provided with an inclined surface to facilitate loading, so as to clamp the small box beam. A servo motor 6 is fixedly installed on the outer side of the crossbeam 5. The output shaft of the servo motor 6 extends into the interior of the fixing groove 9 and is fixedly connected to the screw 10. The servo motor 6 can provide a stable power source for the screw 10. Two support steel rods are fixedly installed between the column 4 and the crossbeam 5 to enhance the overall rigidity.

[0033] Working Principle: First, the hoisting device can be installed in the construction area. An external control device is used to start the electric slide rail 1, servo motor 6, and wire rope electric hoist 7. The wire rope electric hoist 7 enables the lifting of the hoisting plate 8 and the small box girder. The electric slide rail 1 and slider 3 work together to achieve horizontal movement of the column 4 and clamping structure for hoisting the small box girder. The rotation of the screw 10 causes the threaded block to slide within the fixed groove 9, thus achieving longitudinal movement of the small box girder. During hoisting of the small box girder, [the following steps can be taken]. The extension and retraction of the piston rod of cylinder b14 can drive one of the support frames 11 to move. Through the cooperation of connecting rod 2 and rotating part 16, it can drive the other support frame 11 to move, so that the two L-shaped clamps 18 move in opposite directions. This can accommodate small box girders of different sizes and fix the small box girder between the two L-shaped clamps 18. Then, through the extension of the piston rod of cylinder a12, the top of the small box girder can be fixed with the help of clamping plate 17, making the small box girder more stable during hoisting and eliminating the need for manual operation during installation, thus improving construction efficiency.

[0034] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0035] The above are merely preferred embodiments of this application and are not intended to limit this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A hoisting device for small box girder construction, comprising an electric sliding rail (1), characterized in that: The outer side of the electric sliding rail (1) is provided with a hanging plate (8), the bottom of the hanging plate (8) is rotatably installed with a rotating piece (16), both ends of the rotating piece (16) are rotatably connected with connecting rods (2), both sides of the hanging plate (8) are provided with fixed plates (15), the side close to each other of the two fixed plates (15) is fixedly connected with two limiting rods (13), two support frames (11) are slidably installed between the two limiting rods (13), the bottom of the support frame (11) is fixedly connected with an L-shaped clamp (18), the inner wall of the L-shaped clamp (18) is slidably connected with a clamping plate (17), both ends of the top of the support frame (11) are fixedly installed with air cylinders a (12), the piston rods of the air cylinders a (12) are fixedly connected with the corresponding clamping plates (17).

2. The hoisting device for small box girder construction according to claim 1, characterized in that: The top of the electric sliding rail (1) is provided with a lifting assembly, the lifting assembly comprises a stand (4) provided on the top of the electric sliding rail (1), one side of the stand (4) is fixedly installed with a cross beam (5), one end of the bottom of the cross beam (5) is provided with a steel wire rope electric hoist (7), the output end of the steel wire rope electric hoist (7) is connected with the hanging plate (8).

3. The hoisting device for small box girder construction according to claim 2, characterized in that: The inside of the electric sliding rail (1) is provided with a transverse moving assembly, the transverse moving assembly comprises a sliding block (3) slidably installed in the inside of the electric sliding rail (1), the top end of the sliding block (3) is fixedly connected with the stand (4), and the stand (4) is slidably connected with the outer wall of the electric sliding rail (1).

4. The hoisting device for small box girder construction according to claim 3, characterized in that: The inside of the cross beam (5) is provided with a longitudinal moving assembly, the longitudinal moving assembly comprises a fixed groove (9) formed in the inside of the cross beam (5), a screw rod (10) is rotatably connected in the inside of the fixed groove (9), the outer side of the screw rod (10) is threadedly connected with a threaded block, the threaded block is slidably connected with the inner wall of the fixed groove (9), and the threaded block is fixedly connected with the steel wire rope electric hoist (7).

5. The hoisting device for small box girder construction of claim 1, wherein: The end, away from the rotating piece (16), of the connecting rod (2) is rotatably connected with the corresponding support frame (11).

6. The hoisting device for small box girder construction of claim 1, wherein: The top end of one of the support frames (11) is fixedly installed with an air cylinder b (14), and the piston rod of the air cylinder b (14) is fixedly installed with the bottom wall of the hanging plate (8).

7. The hoisting device for small box girder construction of claim 2, characterized in that: The inner wall of the L-shaped clamp (18) is provided with a slope facilitating loading, the outer side of the cross beam (5) is fixedly installed with a servo motor (6), the output shaft of the servo motor (6) extends into the inside of the fixed groove (9) and is fixedly connected with the screw rod (10).

8. The hoisting device for small box girder construction of claim 2, characterized in that: Two supporting steel rods are fixedly installed between the stand (4) and the cross beam (5).

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