Intelligent auxiliary lifting appliance for lifting steel box girder

Abstract

The utility model discloses an intelligent auxiliary lifting appliance for lifting a steel box girder, and relates to the technical field of steel box girder lifting. The steel box girder comprises a steel box girder body, a connecting base is arranged at the top end of the steel box girder body, hoisting bases are fixedly installed on the two sides of the connecting base, two hoisting rings which are symmetrically distributed are fixedly installed at the top ends of the hoisting bases, a first double-thread screw with two opposite threads penetrates through the top of the connecting base in a rotating mode, and a second double-thread screw with two opposite threads penetrates through the top of the first double-thread screw. The outer side of the first double-thread screw is in threaded connection with two symmetrically-distributed moving plates, a bottom plate is fixedly installed at the bottom ends of the moving plates, fixing plates are fixedly installed on the sides, close to the steel box girder body, of the moving plates, the middles of the fixing plates are in threaded connection with threaded rods, and the threaded rods on the left side and the right side of each hoisting base are the same in thread. According to the utility model, the steel box girder body can be hoisted without installing a hoisting point on the steel box girder body, so that the waste of cost is avoided, and the labor force of workers is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to steel box girder hoisting technical field, concretely is a kind of for steel box girder hoisting intelligent auxiliary lifting appliance. BACKGROUND

[0002] Steel box girder, also called steel plate box girder, is the common structure form of large-span bridge. It is generally used in large-span bridge, and is named because its appearance looks like a box. Steel box girder is connected by top plate, bottom plate, web, transverse diaphragm, longitudinal diaphragm and stiffening rib through full welding, and has the characteristics of saving material and small self-weight;

[0003] In the process of steel box girder body construction, the steel box girder body is hoisted by hoisting equipment, but the existing hoisting equipment usually welds and installs multiple hoisting points on the top surface of the steel box girder in advance, and then connects the hooks on the hoisting equipment with the hoisting points on the steel box girder body by manual operation. When the steel box girder is spliced to the already installed steel box girder, the remaining hoisting points will hinder other work in the construction process. Since welding and installation of hoisting points have many inconveniences for disassembly, time and labor are needed, which will reduce the construction efficiency and increase the cost. UTILITY MODEL CONTENTS

[0004] In order to solve the problem that the hooks on the hoisting equipment are connected with the hoisting points on the steel box girder body by manual operation, and the remaining hoisting points will hinder other work in the construction process; the purpose of the utility model is to provide a kind of intelligent auxiliary lifting device for steel box girder hoisting.

[0005] In order to solve the above technical problems, the utility model adopts the following technical scheme: a kind of intelligent auxiliary lifting device for steel box girder hoisting, including steel box girder body, the top end of the steel box girder body is provided with connecting seat, the both sides of the connecting seat are fixedly installed with hoisting seat, the top end of the hoisting seat is fixedly installed with two hoisting rings distributed symmetrically, the top of the connecting seat is rotatably penetrated by the first double-end screw with opposite threads at both ends, the outer side of the first double-end screw is connected with two moving plates distributed symmetrically, the bottom end of the moving plate is fixedly installed with bottom plate, the side of the moving plate close to the steel box girder body is fixedly installed with fixed plate, the middle part of the fixed plate is screw-connected with threaded rod, the threaded rods on the left and right sides of each hoisting seat are screw-connected with each other; the bottom end of the threaded rod is fixedly installed with pressing plate, the outer side of each threaded rod is fixedly installed with worm gear, the outer side of the worm gear is meshingly connected with worm, the worm is rotatably penetrated through the moving plate, the expansion rod is fixedly installed between the two worm gears, the bottom of the hoisting seat is penetrated and provided with circular groove matched with the expansion rod, the outer side of the two moving plates on the right side is fixedly installed with driving motor, and the driving motor is fixedly connected with the worm.

[0006] Preferably, the first connecting plate is fixedly installed on one side of each lifting seat away from the connecting seat, the second connecting plate is fixedly installed on the side of the first connecting plate away from the lifting seat, the upper surface of the second connecting plate is fixedly installed with two symmetrically distributed fixing blocks, the top of the fixing block is rotatably penetrated by a second double-headed screw rod with opposite threads at two ends, the outer side of the second double-headed screw rod is threadedly connected with two symmetrically distributed moving blocks, the bottom end of the moving block is fixedly installed with a clamping plate, and the top end of the second connecting plate is penetrated and provided with a through groove matched with the moving block.

[0007] Compared with the prior art, the utility model has the beneficial effects that:

[0008] 1、The steel box beam body can be hoisted without installing hoisting points on the steel box beam body, cost waste is avoided, and labor is reduced.

[0009] 2、The steel box beam body is clamped more stably, and the stability of the steel box beam body hoisting is improved. BRIEF DESCRIPTION OF DRAWINGS

[0010] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to these drawings without creative labor.

[0011] Figure 1 It is the structural schematic diagram of the utility model.

[0012] Figure 2 It is the lifting seat and round groove connecting structure schematic diagram in the utility model.

[0013] Figure 3 It is the threaded rod and pressing plate connecting structure schematic diagram in the utility model.

[0014] Figure 4 It is the T-shaped block and rack connecting structure schematic diagram in the utility model.

[0015] In the diagram: 1. Steel box girder body; 10. Lifting ring; 11. Connecting seat; 12. Lifting seat; 13. First double-ended screw; 14. Moving plate; 15. Base plate; 16. Fixing plate; 17. Threaded rod; 18. Pressing plate; 2. Worm gear; 20. Fixing seat; 21. Worm; 22. Telescopic rod; 23. Circular groove; 24. Limiting block; 25. Limiting groove; 26. Drive motor; 27. Limiting rod; 3. First connecting plate; 31. Second connecting plate; 32. Fixing block; 33. Second double-ended screw; 34. Moving block; 35. Clamping plate; 36. Through groove; 4. Gear; 41. Rack; 42. T-block; 43. Support plate; 44. Hydraulic rod; 5. Slide seat. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Example: Figures 1-4 As shown, this utility model provides an intelligent auxiliary lifting device for steel box girder hoisting, including a steel box girder body 1, a connecting seat 11 at the top of the steel box girder body 1, and lifting seats 12 fixedly installed on both sides of the connecting seat 11. Two symmetrically distributed lifting rings 10 are fixedly installed at the top of the lifting seat 12. A first double-ended screw 13 with opposite threads is rotatably passed through the top of the connecting seat 11. Two symmetrically distributed moving plates 14 are threaded to the outer side of the first double-ended screw 13. A base plate 15 is fixedly installed at the bottom of the moving plate 14. A fixing plate 16 is fixedly installed on the side of the moving plate 14 near the steel box girder body 1. A threaded rod 17 is threadedly connected to the middle of the fixing plate 16. The threads of the threaded rods 17 on the left and right sides of each lifting seat 12 are the same.

[0018] A clamping plate 18 is fixedly installed at the bottom end of the threaded rod 17. A worm wheel 2 is fixedly installed on the outside of each threaded rod 17. A worm 21 is meshed with the outside of the worm wheel 2. The worm 21 rotates through the moving plate 14. A telescopic rod 22 is fixedly installed between the two worms 21. A circular groove 23 that works with the telescopic rod 22 is opened through the bottom of the lifting base 12. A drive motor 26 is fixedly installed on the outside of the two moving plates 14 on the right side. The drive motor 26 is fixedly connected to the worm 21.

[0019] The first connecting plate 3 is fixedly installed on one side of each lifting seat 12 away from the connecting seat 11, the second connecting plate 31 is fixedly installed on one side of the first connecting plate 3 away from the lifting seat 12, the upper surface of the second connecting plate 31 is fixedly installed with two fixed blocks 32 symmetrically distributed, the top of the fixed block 32 is rotatably penetrated by the second double-headed screw rod 33 with two opposite threads, the outer side of the second double-headed screw rod 33 is threadedly connected with two moving blocks 34 symmetrically distributed, the bottom end of the moving block 34 is fixedly installed with a clamping plate 35, and the top end of the second connecting plate 31 is penetrated to be provided with a through groove 36 used in cooperation with the moving block 34.

[0020] The limiting block 24 is fixedly installed on one side of the pressing plate 18 close to the moving plate 14, and the limiting groove 25 used in cooperation with the limiting block 24 is penetrated and arranged on the bottom of the moving plate 14. The limiting block 24 and the limiting groove 25 are arranged to limit the pressing plate 18, so that the pressing plate 18 is prevented from rotating with the threaded rod 17, the downward movement of the pressing plate 18 is affected, and the clamping of the pressing plate 18 on the steel box girder body 1 is affected.

[0021] The limiting rod 27 is fixedly installed on the top of each lifting seat 12, and the moving plate 14 is slidably sleeved on the limiting rod 27. The limiting rod 27 is arranged to limit the moving plate 14, so that the moving plate 14 is prevented from rotating with the first double-headed screw rod 13, and the movement of the moving plate 14 to both sides or the middle is affected.

[0022] The gear 4 is fixedly installed on the outside of each second double-headed screw rod 33, the gear 4 is located at the middle position of the second double-headed screw rod 33, the outer side of the gear 4 is meshingly connected with the rack 41, the bottom end of the rack 41 is fixedly installed with the T-shaped block 42, the supporting plate 43 is fixedly installed on one side of the second connecting plate 31 away from the first connecting plate 3, the hydraulic rod 44 is fixedly installed on the top end of the supporting plate 43, the hydraulic rod 44 is fixedly connected with the T-shaped block 42, the sliding seat 5 is fixedly installed at the middle position of the top end of the second connecting plate 31, the T-shaped block 42 is slidably connected with the sliding seat 5. The hydraulic rod 44 is arranged, when the hydraulic rod 44 is started, the T-shaped block 42 is driven to slide in the sliding seat 5, with the movement of the T-shaped block 42, the rack 41 is driven to move, the movement of the rack 41 drives the gear 4 to rotate, thereby driving the second double-headed screw rod 33 to rotate, so that the second double-headed screw rod 33 drives the moving block 34 to move.

[0023] The diameter of the circular groove 23 is greater than the diameter of the telescopic rod 22, which is more convenient for the telescopic rod 22 to extend and retract in the circular groove 23.

[0024] The synchronous belt is toothed, and the first double-headed screw rod 13 and the second double-headed screw rod 33 can be simultaneously rotated by arranging the synchronous belt, so that the first double-headed screw rod 13 drives the moving plate 14 to move, and the second double-headed screw rod 33 drives the moving block 34 to rotate.

[0025] The outer rotating sleeve of each worm 21 is provided with a fixing seat 20, and the fixing seat 20 is fixed on the fixing plate 16. The fixing seat 20 supports the worm 21, so that the worm 21 is more stable when rotating.

[0026] Working principle: in actual use, first, the whole device is connected with the steel wire rope on the crane through the lifting ring 10, and then the whole device is lifted by the crane. When the whole device is lifted, the moving plate 14 is located on both sides of the first double-headed screw rod 13, and the bottom plate 15 is away from the steel box girder body 1. At the same time, the moving block 34 is located on both sides of the second double-headed screw rod 33, and the clamping plate 35 is away from the steel box girder body 1. Then, the whole device is placed on the steel box girder body 1 by the crane, so that the bottom surface of the connecting seat 11, the lifting seat 12, the first connecting plate 3, the second connecting plate 31 and the supporting plate 43 is attached to the top surface of the steel box girder body 1, and the steel wire rope is in a relaxed state.

[0027] The hydraulic rod 44 is started, the rack 41 is pushed to the direction of the lifting seat 12, the gear 4 is driven to rotate, the second double-headed screw rod 33 is driven to rotate, the moving block 34 is limited by the through slot 36, the second double-headed screw rod 33 drives the moving block 34 and the clamping plate 35 to move to the both sides of the steel box girder body 1, the second double-headed screw rod 33 is connected with the first double-headed screw rod 13 through the synchronous belt, the second double-headed screw rod 33 drives the first double-headed screw rod 13 to rotate at the same time, the moving plate 14 is limited by the limiting rod 27, the first double-headed screw rod 13 drives the moving plate 14 and the bottom plate 15 to move to the both sides of the steel box girder body 1, the telescopic rod 22 is retracted when the moving plate 14 moves to the middle, the worm 21, the worm gear 2, the threaded rod 17 and the pressing plate 18 move to the middle, the moving plate 14 and the clamping plate 35 are attached to the steel box girder body 1 when they are attached to the steel box girder body 1, the bottom plate 15 is attached to the bottom surface of the steel box girder body 1, and the hydraulic rod 44 stops telescoping.

[0028] Subsequently, two driving motors 26 are started to drive the corresponding one of the two worms 21 to rotate, and the rotation of the worm 21 drives the telescopic rod 22 to rotate, and the telescopic rod 22 drives the other worm 21 to rotate simultaneously, the rotation of the two worms 21 drives the worm gear 2 and the threaded rod 17 to rotate, and the compression plate 18 is limited by the limiting block 24 and the limiting groove 25, so that the rotation of the threaded rod 17 drives the compression plate 18 to move downward, so that the compression plate 18 is attached to the top surface of the steel box girder body 1, so that the steel box girder body 1 and the whole device are fixed together, and then the whole device and the steel box girder body 1 are hoisted to the construction site by the crane.

[0029] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application also intends to include these modifications and variations.

Claims

1. A kind of intelligent auxiliary hoist for steel box girder hoisting, including steel box girder body (1), it is characterized by: The top end of the steel box girder body (1) is provided with a connecting seat (11), both sides of the connecting seat (11) are fixedly provided with lifting seats (12), the top end of the lifting seat (12) is fixedly provided with two lifting rings (10) which are symmetrically distributed, the connecting seat (11) is rotatably penetrated by a first double-headed screw rod (13) with opposite threads at both ends, the outer side of the first double-headed screw rod (13) is threadedly connected with two moving plates (14) which are symmetrically distributed, the bottom end of the moving plate (14) is fixedly provided with a bottom plate (15), the side of the moving plate (14) close to the steel box girder body (1) is fixedly provided with a fixed plate (16), the middle part of the fixed plate (16) is threadedly connected with a threaded rod (17), and the threaded rods (17) on the left and right sides of each lifting seat (12) are threadedly the same; The bottom end of the threaded rod (17) is fixedly provided with a pressing plate (18), the outer side of each threaded rod (17) is fixedly provided with a worm gear (2), the outer side of the worm gear (2) is meshingly connected with a worm (21), the worm (21) is rotatably penetrated through the moving plate (14), the two worm gears (21) are fixedly provided with an extension rod (22) therebetween, the bottom of the lifting seat (12) is penetrated to form a circular groove (23) which is used in cooperation with the extension rod (22), the outer side of the two moving plates (14) on the right side is fixedly provided with a driving motor (26), and the driving motor (26) is fixedly connected with the worm (21).

2. The intelligent auxiliary lifting device for lifting a steel box girder according to claim 1, characterized in that, The side of each lifting seat (12) away from the connecting seat (11) is fixedly provided with a first connecting plate (3), the side of the first connecting plate (3) away from the lifting seat (12) is fixedly provided with a second connecting plate (31), the upper surface of the second connecting plate (31) is fixedly provided with two fixed blocks (32) which are symmetrically distributed, the top of the fixed block (32) is rotatably penetrated by a second double-headed screw rod (33) with opposite threads at both ends, the outer side of the second double-headed screw rod (33) is threadedly connected with two moving blocks (34) which are symmetrically distributed, the bottom end of the moving block (34) is fixedly provided with a clamping plate (35), and the top end of the second connecting plate (31) is penetrated to form a through groove (36) which is used in cooperation with the moving block (34).

3. The intelligent auxiliary lifting device for lifting a steel box girder according to claim 1, wherein, The side of the pressing plate (18) close to the moving plate (14) is fixedly provided with a limiting block (24), and the bottom of the moving plate (14) is penetrated to form a limiting groove (25) which is used in cooperation with the limiting block (24).

4. The intelligent auxiliary lifting device for lifting a steel box girder as claimed in claim 1, wherein, The top of each lifting seat (12) is fixedly provided with a limiting rod (27), and the moving plate (14) is slidably sleeved on the limiting rod (27).

5. The intelligent auxiliary lifting spreader for lifting a steel box girder as claimed in claim 2, wherein, The exterior of each second double-headed screw (33) is fixedly installed with a gear (4), the gear (4) is located at the middle position of the second double-headed screw (33), the outer side of the gear (4) is meshingly connected with a rack (41), the bottom end of the rack (41) is fixedly installed with a T-shaped block (42), the side of the second connecting plate (31) away from the first connecting plate (3) is fixedly installed with a supporting plate (43), the top end of the supporting plate (43) is fixedly installed with a hydraulic rod (44), the hydraulic rod (44) is fixedly connected with the T-shaped block (42), the middle position of the top end of the second connecting plate (31) is fixedly installed with a sliding seat (5), the T-shaped block (42) is slidingly connected with the sliding seat (5).

6. The intelligent auxiliary lifting spreader for lifting a steel box girder as claimed in claim 1, wherein, The diameter of the circular groove (23) is greater than the diameter of the telescopic rod (22).

7. The intelligent auxiliary lifting spreader for lifting a steel box girder as claimed in claim 2, wherein, Each adjacent first double-headed screw (13) and second double-headed screw (33) is connected through synchronous belt transmission, and the synchronous belt is a gear type.

8. The intelligent auxiliary lifting spreader for lifting a steel box girder as claimed in claim 1, wherein, The exterior of each worm (21) is rotatably sleeved with a fixing seat (20), and the fixing seat (20) is fixed on the fixing plate (16).

Images