Lifting appliance device for rapid and accurate installation of steel box girder lifting

Abstract

The invention discloses a lifting appliance device for rapid and accurate installation of steel box girder lifting, and relates to the technical field of lifting appliance devices.The lifting appliance device comprises a lifting appliance body and a suspension frame fixedly connected to the bottom of the lifting appliance body, a cross beam is arranged at the bottom of the suspension frame, and a first traction steel wire rope is fixedly connected to the bottom of the cross beam; one end of the first traction steel wire rope is fixedly connected with a hook; and the angle adjusting mechanism is positioned between the suspension bracket and the cross beam and is used for adjusting the angle of the cross beam. By arranging the angle adjusting mechanism, when an operator lifts a steel box girder to a designated position through the lifting appliance body by using a crane and needs to adjust the inclination angle of the steel box girder, the hydraulic cylinder can be started, and according to the required tilting angle, the output end of the hydraulic cylinder extends, so that the inclination angle of the steel box girder is adjusted. And the transverse beam is pushed to drive the steel box girder hoisted at the bottom to rotate, so that the hoisting angle of the steel box girder is finely adjusted, and the mounting efficiency of the steel box girder is improved.

Description

Technical Field

[0001] The invention relates to the technical field of hoisting device, in particular to a hoisting device used for fast and accurate installation of steel box girders. Background Art

[0002] Steel box girder, also called steel plate box girder, is a common structural form for long-span bridges. It is generally used in bridges with large spans. It is called steel box girder because it looks like a box. In large-span cable-supported bridges, the span of steel box main beams is hundreds of meters to thousands of meters. It is generally manufactured and installed in several beam sections. Its cross section has wide and flat appearance characteristics.

[0003] The installation of steel box girders is mostly carried out by lifting and transferring them with lifting equipment using lifting tools, setting ear plates or holes on the surface of the steel box girder, and then lifting the steel box girder with lifting tools and slings equipped with hooks. However, there is a certain error after the steel box girder is lifted to the specified position, and the angle of the steel box girder cannot be fine-tuned locally. The staff needs to constantly guide the crane operator to adjust the overall position of the lifting tool to calibrate the steel box girder to the specified angle, thereby reducing the efficiency of the steel box girder installation and further reducing the overall practicality of the device. For this reason, we provide a lifting tool device for fast and accurate installation of steel box girders to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to provide a lifting device for fast and accurate installation of steel box girders in order to solve the problem that the existing lifting device cannot fine-tune the angle of the steel box girder at a local position.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a sling device for fast and accurate installation of steel box girders, comprising: a sling body and a suspension frame fixedly connected to the bottom of the sling body, a crossbeam is arranged at the bottom of the suspension frame, a first traction steel wire rope is fixedly connected to the bottom of the crossbeam, and a hook is fixedly connected to one end of the first traction steel wire rope; an angle adjustment mechanism is located between the suspension frame and the crossbeam, and is used to adjust the angle of the crossbeam; a traction auxiliary device is located between the suspension frame and the crossbeam, and is used to cooperate with the angle adjustment mechanism to adjust the angle of the crossbeam; a tension adjustment mechanism is located at the bottom of the crossbeam, and is used to adjust the tension of the first traction steel wire rope.

[0006] As a further solution of the present invention: the angle adjustment mechanism includes a second fixed seat fixedly connected to the top of the beam, the inner side of the second fixed seat is rotatably connected to the first rotating shaft, and the first rotating shaft is fixedly connected to the suspension frame, a fourth fixed seat on both sides of the suspension frame, the top of the beam is fixedly connected to the third fixed seat, the fourth fixed seat and the inner side of the third fixed seat are provided with a hydraulic cylinder, the output end and the bottom of the hydraulic cylinder are fixedly connected to the second rotating shaft, one of the second rotating shafts is rotatably connected to the fourth fixed seat, and the other second rotating shaft is rotatably connected to the third fixed seat.

[0007] As a further solution of the present invention: the traction assistant includes a first auxiliary frame fixedly connected to both sides of the suspension frame, a first winding roller is rotatably connected to the inner side of one of the first auxiliary frames, and a second winding roller is rotatably connected to the inner side of another first auxiliary frame, a driving motor is installed on one side of one of the first auxiliary frames, the output end of the driving motor is connected to the first winding roller, a group of second traction steel ropes are wound on the outer walls of the first winding roller and the second winding roller, two first fixed seats are fixedly connected to the top of the crossbeam, and the other ends of the two groups of the second traction steel ropes are respectively fixedly connected to one of the first fixed seats.

[0008] As a further solution of the present invention: the traction aid also includes a second T-shaped slider slidably connected to the inner side of the suspension frame, one side of the second T-shaped slider extends to the outside of the suspension frame and is fixedly connected to a spur rack, the outer walls of the first winding roller and the second winding roller are fixedly connected to a spur gear, and the two spur gears are meshed with the spur rack.

[0009] As a further solution of the present invention: the tension adjustment mechanism includes a suspension seat fixedly connected to the bottom of the crossbeam, a power rod is fixedly connected to the inner side of the suspension seat, a T-shaped pressure rod is slidably connected to the inner side of the power rod, one end of the T-shaped pressure rod passes through the outside of the power rod and is fixedly connected to a second spherical rod, the other end of the T-shaped pressure rod is against the outer wall of the first traction wire rope, a second connecting spring is installed between the second spherical rod and the power rod, and a toggle assembly for driving the second spherical rod to move is provided on the top of the crossbeam.

[0010] As a further solution of the present invention: the toggle assembly includes a first T-shaped slider slidably connected to the inner side of the crossbeam, one side of the first T-shaped slider is fixedly connected to a fixing plate, the inner side of the fixing plate is fixedly connected to a first connecting spring, and one end of the first connecting spring is fixedly connected to the crossbeam, the other side of the first T-shaped slider is fixedly connected to a first connecting rod, one end of the first connecting rod is fixedly connected to a trapezoidal block, the top of the first T-shaped slider is fixedly connected to a first spherical rod, and one side of the second fixed seat is fixedly connected to an inclined plate.

[0011] As a further solution of the present invention: the tension adjustment mechanism also includes a second guide wheel rotatably connected to the inner side of the suspension seat, a second auxiliary frame is provided on one side of the suspension seat, the inner side of the second auxiliary frame is rotatably connected to the first guide wheel, and the first guide wheel matches the inner diameter of the second guide wheel, the first guide wheel is attached to the outer wall of the first traction wire rope, and a power clamping component for moving the first guide wheel to press against the outer wall of the first traction wire rope is provided on one side of the suspension seat.

[0012] As a further solution of the present invention: the power clamping assembly includes an auxiliary seat fixedly connected to one side of the suspension seat, a T-shaped connecting plate is fixedly connected to the inner side of the auxiliary seat, one end of the T-shaped connecting plate is fixedly connected to the second auxiliary frame, an auxiliary spring is installed between the inner side of the T-shaped connecting plate and the auxiliary seat, an oblique groove is provided on the inner side of the T-shaped connecting plate, a second connecting rod is fixedly connected to the outer walls on both sides of the trapezoidal block, one end of the second guide wheel is fixedly connected to a power rod, the bottom of the power rod is provided with an arc surface, and the arc surface is against the oblique groove.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. By setting up the angle adjustment mechanism, when the operator uses the crane to lift the steel box girder to the specified position through the lifting device body and needs to adjust the inclination angle of the steel box girder, the hydraulic cylinder can be started. According to the required tilting angle, the output end of the hydraulic cylinder is extended, and the crossbeam is pushed to drive the steel box girder lifted at the bottom to rotate, so as to achieve fine adjustment of the lifting angle of the steel box girder, thereby improving the efficiency of the steel box girder installation;

[0015] 2. By setting a traction auxiliary device, when the crossbeam is tilted and rotated, the driving motor is started. When one end of the crossbeam is tilted toward the first winding roller, the output end of the driving motor drives the first winding roller to wind up the second traction steel wire rope. The first winding roller rotates and drives the spur gear to rotate, thereby driving the spur rack to move laterally to rotate the spur gear on the outer wall of the second winding roller, thereby driving the second winding roller to release the second traction steel wire rope, so that the crossbeam is pulled by the two second traction steel wire ropes during the angle adjustment process, thereby improving the stability of the crossbeam rotation;

[0016] 3. By setting a tension adjustment mechanism, when one end of the beam tilts toward the first winding roller, the first spherical rod contacts the inner inclined surface of the inclined plate, and under the action of the inner inclined surface of the inclined plate, the first spherical rod is pushed to drive the first T-shaped slider to move toward the bottom of the beam, and then the second spherical rod is pushed to move toward the direction of the first traction wire rope through the inner inclined surface of the trapezoidal block, so that the T-shaped pressure rod can push the first traction wire rope toward the first guide wheel for tightening, so that the first traction wire rope at the tilted end can be gradually tightened as the tilting angle increases, thereby adjusting the tension of the first traction wire rope at the tilted end, thereby improving the tensioning column that can be stabilized when the steel box beam is tilted, thereby improving the stability of the steel box beam when the angle is adjusted;

[0017] 4. By setting up a power clamping assembly, when the trapezoidal block moves downward, it drives the second connecting rod to move downward synchronously. Since the arc surface initially rests on the inclined groove, the power rod pushes the T-shaped connecting plate to pull the second auxiliary frame toward the direction of the first traction wire rope, so that the first guide wheel gradually clamps the first traction wire rope, thereby further improving the stability of the first traction wire rope during tension adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention;

[0019] Figure 2 For the present invention Figure 1 Enlarged view of point A in the middle;

[0020] Figure 3 It is a schematic diagram of the top structure of the crossbeam of the present invention;

[0021] Figure 4 It is a schematic diagram of the back structure of the crossbeam of the present invention;

[0022] Figure 5 It is a schematic diagram of the local structure of the bottom of the beam of the present invention;

[0023] Figure 6 It is a structural schematic diagram of the tension adjustment mechanism of the present invention;

[0024] Figure 7 It is a schematic diagram of the suspension seat structure of the present invention;

[0025] Figure 8 For the present invention Figure 7 Enlarged view of point B in the middle;

[0026] Fig. 9 It is a schematic diagram of the inner structure of the suspension seat of the present invention.

[0027] In the figure: 1, the main body of the sling; 2, the suspension frame; 3, the crossbeam; 4, the first traction wire rope; 5, the hook; 6, the first fixed seat; 7, the second traction wire rope; 8, the second fixed seat; 9, the first rotating shaft; 10, the spur rack; 11, the first auxiliary frame; 12, the driving motor; 13, the first winding roller; 14, the third fixed seat; 15, the hydraulic cylinder; 16, the fourth fixed seat; 17, the second rotating shaft; 18, the second winding roller; 19, the spur gear; 20, the first T-shaped slider; 21, the A connecting spring; 22, a first spherical rod; 23, an inclined plate; 24, a fixed plate; 25, a first connecting rod; 26, a trapezoidal block; 27, a second connecting rod; 28, a second spherical rod; 29, a suspension seat; 30, a first guide wheel; 31, a second auxiliary frame; 32, a power rod; 33, a T-shaped pressure rod; 34, a T-shaped connecting plate; 35, an auxiliary seat; 36, an auxiliary spring; 37, a second guide wheel; 38, an inclined groove; 39, an arc surface; 40, a second connecting spring; 41, a second T-shaped slider. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it 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 directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The following is an explanation of an embodiment of the present invention based on the overall structure of the present invention.

[0030] Example 1

[0031] See also Figures 1 to 9 , the present embodiment provides a lifting device for fast and accurate installation of steel box beams, including: a lifting device body 1 and a suspension frame 2 fixedly connected to the bottom of the lifting device body 1, a crossbeam 3 is arranged at the bottom of the suspension frame 2, a first traction wire rope 4 is fixedly connected to the bottom of the crossbeam 3, and a hook 5 is fixedly connected to one end of the first traction wire rope 4; an angle adjustment mechanism is located between the suspension frame 2 and the crossbeam 3, and is used to adjust the angle of the crossbeam 3, the angle adjustment mechanism includes a second fixed seat 8 fixedly connected to the top of the crossbeam 3, a first rotating shaft 9 is rotatably connected to the inner side of the second fixed seat 8, and the first rotating shaft 9 is fixedly connected to the suspension frame 2, fourth fixed seats 16 on both sides of the suspension frame 2, a third fixed seat 14 is fixedly connected to the top of the crossbeam 3, a hydraulic cylinder 15 is arranged on the inner side of the fourth fixed seat 16 and the third fixed seat 14, and the output end and the bottom of the hydraulic cylinder 15 are fixedly connected to the second rotating shaft 17, one second rotating shaft 17 is rotatably connected to the fourth fixed seat 16, and another second rotating shaft 17 is rotatably connected to the third fixed seat 14;

[0032] Firstly, when the operator uses a crane to lift the steel box girder to a specified position through the lifting device body 1 and needs to adjust the inclination angle of the steel box girder, the hydraulic cylinder 15 can be started. According to the required lifting angle, when the output end of the hydraulic cylinder 15 is extended, the cross beam 3 is pushed to drive the steel box girder lifted at the bottom to rotate, thereby achieving fine adjustment of the lifting angle of the steel box girder, thereby improving the efficiency of the steel box girder installation.

[0033] Example 2

[0034] The traction auxiliary device is located between the suspension frame 2 and the crossbeam 3, and is used to cooperate with the angle adjustment mechanism to adjust the angle of the crossbeam 3. The traction auxiliary device includes a first auxiliary frame 11 fixedly connected to both sides of the suspension frame 2, and the inner side of one of the first auxiliary frames 11 is rotatably connected to the first winding roller 13, and the inner side of the other first auxiliary frame 11 is rotatably connected to the second winding roller 18. A driving motor 12 is installed on one side of one of the first auxiliary frames 11, and the output end of the driving motor 12 is connected to the first winding roller 13. The first winding roller 13 and the second winding roller 18 are connected. The outer wall is wound with a group of second traction steel wire ropes 7, the top of the crossbeam 3 is fixedly connected to two first fixing seats 6, and the other ends of the two groups of second traction steel wire ropes 7 are respectively fixedly connected to a first fixing seat 6, the traction auxiliary device also includes a second T-shaped slider 41 slidably connected to the inner side of the suspension frame 2, one side of the second T-shaped slider 41 extends to the outside of the suspension frame 2 and is fixedly connected to a spur rack 10, the outer walls of the first winding roller 13 and the second winding roller 18 are fixedly connected to a spur gear 19, and the two spur gears 19 are meshed with the spur rack 10;

[0035] When the beam 3 is tilted and rotated, the drive motor 12 is started. When one end of the beam 3 is tilted toward the first winding roller 13, the output end of the drive motor 12 drives the first winding roller 13 to wind up the second traction wire rope 7. The first winding roller 13 rotates and drives the spur gear 19 to rotate, thereby driving the spur rack 10 to move laterally to drive the spur gear 19 on the outer wall of the second winding roller 18 to rotate, thereby driving the second winding roller 18 to release the second traction wire rope 7, so that during the process of adjusting the angle of the beam 3, the two second traction wire ropes 7 can pull the beam 3, thereby improving the rotation stability of the beam 3.

[0036] Example 3

[0037] The tension adjustment mechanism is located at the bottom of the crossbeam 3 and is used to adjust the tension of the first traction wire rope 4. The tension adjustment mechanism includes a suspension seat 29 fixedly connected to the bottom of the crossbeam 3, a power rod 32 is fixedly connected to the inner side of the suspension seat 29, a T-shaped pressure rod 33 is slidably connected to the inner side of the power rod 32, one end of the T-shaped pressure rod 33 passes through the outside of the power rod 32 and is fixedly connected to the second spherical rod 28, the other end of the T-shaped pressure rod 33 is against the outer wall of the first traction wire rope 4, a second connecting spring 40 is installed between the second spherical rod 28 and the power rod 32, and a toggle assembly for driving the second spherical rod 28 to move is provided at the top of the crossbeam 3, the toggle assembly includes a first T-shaped slider 20 slidably connected to the inner side of the crossbeam 3, and one side of the first T-shaped slider 20 is fixedly connected to A fixed plate 24, a first connecting spring 21 is fixedly connected to the inner side of the fixed plate 24, and one end of the first connecting spring 21 is fixedly connected to the cross beam 3, a first connecting rod 25 is fixedly connected to the other side of the first T-shaped slider 20, one end of the first connecting rod 25 is fixedly connected to a trapezoidal block 26, a first spherical rod 22 is fixedly connected to the top of the first T-shaped slider 20, a slanted plate 23 is fixedly connected to one side of the second fixed seat 8, and the tension adjustment mechanism also includes a second guide wheel 37 rotatably connected to the inner side of the suspension seat 29, a second auxiliary frame 31 is provided on one side of the suspension seat 29, a first guide wheel 30 is rotatably connected to the inner side of the second auxiliary frame 31, and the inner diameters of the first guide wheel 30 and the second guide wheel 37 match each other, and the first guide wheel 30 is attached to the outer wall of the first traction wire rope 4;

[0038] When one end of the beam 3 is tilted toward the first winding roller 13, the first spherical rod 22 contacts the inner inclined surface of the inclined plate 23. Under the action of the inner inclined surface of the inclined plate 23, the first spherical rod 22 is pushed to drive the first T-shaped slider 20 to move toward the bottom of the beam 3, and then the second spherical rod 28 is pushed to move toward the first traction wire rope 4 through the inner inclined surface of the trapezoidal block 26, so that the T-shaped pressure rod 33 can push the first traction wire rope 4 toward the first guide wheel 30 for tensioning, so that the first traction wire rope 4 at one end of the tilting can be gradually tightened as the tilting angle continues to increase, thereby adjusting the tensioning degree of the first traction wire rope 4 at one end of the tilting, thereby improving the tensioning column that can be stably stabilized when the steel box beam is tilted, thereby improving the stability of the steel box beam when the angle is adjusted.

[0039] Example 4

[0040] A power clamping assembly for moving the first guide wheel 30 to press against the outer wall of the first traction wire rope 4 is provided on one side of the suspension seat 29. The power clamping assembly includes an auxiliary seat 35 fixedly connected to one side of the suspension seat 29. A T-shaped connecting plate 34 is fixedly connected to the inner side of the auxiliary seat 35. One end of the T-shaped connecting plate 34 is fixedly connected to the second auxiliary frame 31. An auxiliary spring 36 is installed between the inner side of the T-shaped connecting plate 34 and the auxiliary seat 35. An inclined groove 38 is provided on the inner side of the T-shaped connecting plate 34. The outer walls on both sides of the trapezoidal block 26 are fixedly connected to the second connecting rod 27. One end of the second guide wheel 37 is fixedly connected to the power rod 32. The bottom of the power rod 32 is provided with an arc surface 39, and the arc surface 39 is against the inclined groove 38.

[0041] When the trapezoidal block 26 moves downward, it drives the second connecting rod 27 to move downward synchronously. Since the arc surface 39 initially abuts against the inclined groove 38, the power rod 32 pushes the T-shaped connecting plate 34 to pull the second auxiliary frame 31 toward the first traction wire rope 4, so that the first guide wheel 30 gradually presses the first traction wire rope 4, thereby further improving the stability of the first traction wire rope 4 during tension adjustment.

[0042] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A lifting device for rapid and accurate installation of steel box girders, characterized in that: include: A sling body (1) and a suspension frame (2) fixedly connected to the bottom of the sling body (1), a crossbeam (3) is provided at the bottom of the suspension frame (2), a first traction steel wire rope (4) is fixedly connected to the bottom of the crossbeam (3), and one end of the first traction steel wire rope (4) is fixedly connected to a hook (5); An angle adjustment mechanism, located between the suspension frame (2) and the crossbeam (3), and used for adjusting the angle of the crossbeam (3); A traction auxiliary device, located between the suspension frame (2) and the crossbeam (3), and used to cooperate with the angle adjustment mechanism to adjust the angle of the crossbeam (3); The tension adjustment mechanism is located at the bottom of the crossbeam (3) and is used to adjust the tension of the first traction steel wire rope (4).

2. A lifting device for rapid and accurate installation of steel box beams according to claim 1, characterized in that: The angle adjustment mechanism comprises a second fixed seat (8) fixedly connected to the top of the cross beam (3), a first rotating shaft (9) being rotatably connected to the inner side of the second fixed seat (8), and the first rotating shaft (9) being fixedly connected to the suspension frame (2), fourth fixed seats (16) on both sides of the suspension frame (2), a third fixed seat (14) being fixedly connected to the top of the cross beam (3), a hydraulic cylinder (15) being arranged on the inner side of the fourth fixed seat (16) and the third fixed seat (14), an output end and a bottom of the hydraulic cylinder (15) being fixedly connected to a second rotating shaft (17), one of the second rotating shafts (17) being rotatably connected to the fourth fixed seat (16), and another of the second rotating shafts (17) being rotatably connected to the third fixed seat (14).

3. A lifting device for rapid and accurate installation of steel box beams according to claim 1, characterized in that: The traction auxiliary device comprises a first auxiliary frame (11) fixedly connected to both sides of the suspension frame (2), the inner side of one of the first auxiliary frames (11) being rotatably connected to a first winding roller (13), and the inner side of the other first auxiliary frame (11) being rotatably connected to a second winding roller (18), a driving motor (12) being installed on one side of one of the first auxiliary frames (11), the output end of the driving motor (12) being connected to the first winding roller (13), the outer walls of the first winding roller (13) and the second winding roller (18) both winding a group of second traction steel wire ropes (7), the top of the crossbeam (3) being fixedly connected to two first fixed seats (6), and the other ends of the two groups of the second traction steel wire ropes (7) being fixedly connected to one of the first fixed seats (6) respectively.

4. A lifting device for rapid and accurate installation of steel box beams according to claim 3, characterized in that: The traction aid also includes a second T-shaped slider (41) slidably connected to the inner side of the suspension frame (2), one side of the second T-shaped slider (41) extends to the outside of the suspension frame (2) and is fixedly connected to a spur rack (10), the outer walls of the first winding roller (13) and the second winding roller (18) are both fixedly connected to a spur gear (19), and the two spur gears (19) are meshed with the spur rack (10).

5. The lifting device for rapid and accurate installation of steel box beams according to claim 2, characterized in that: The tension adjustment mechanism comprises a suspension seat (29) fixedly connected to the bottom of the cross beam (3), a power rod (32) fixedly connected to the inner side of the suspension seat (29), a T-shaped pressure rod (33) slidably connected to the inner side of the power rod (32), one end of the T-shaped pressure rod (33) passes through the outside of the power rod (32) and is fixedly connected to a second spherical rod (28), the other end of the T-shaped pressure rod (33) abuts against the outer wall of the first traction wire rope (4), a second connecting spring (40) is installed between the second spherical rod (28) and the power rod (32), and a toggle assembly for driving the second spherical rod (28) to move is provided at the top of the cross beam (3).

6. A lifting device for rapid and accurate installation of steel box beams according to claim 5, characterized in that: The toggle assembly comprises a first T-shaped slider (20) slidably connected to the inner side of the cross beam (3); a fixing plate (24) is fixedly connected to one side of the first T-shaped slider (20); a first connecting spring (21) is fixedly connected to the inner side of the fixing plate (24); one end of the first connecting spring (21) is fixedly connected to the cross beam (3); a first connecting rod (25) is fixedly connected to the other side of the first T-shaped slider (20); one end of the first connecting rod (25) is fixedly connected to a trapezoidal block (26); a first spherical rod (22) is fixedly connected to the top of the first T-shaped slider (20); and a slanted plate (23) is fixedly connected to one side of the second fixing seat (8).

7. A lifting device for rapid and accurate installation of steel box beams according to claim 6, characterized in that: The tension adjustment mechanism also includes a second guide wheel (37) rotatably connected to the inner side of the suspension seat (29), a second auxiliary frame (31) is provided on one side of the suspension seat (29), a first guide wheel (30) is rotatably connected to the inner side of the second auxiliary frame (31), and the first guide wheel (30) matches the inner diameter of the second guide wheel (37), the first guide wheel (30) is attached to the outer wall of the first traction wire rope (4), and a power clamping component for moving the first guide wheel (30) to press against the outer wall of the first traction wire rope (4) is provided on one side of the suspension seat (29).

8. A lifting device for rapid and accurate installation of steel box beams according to claim 7, characterized in that: The power clamping assembly comprises an auxiliary seat (35) fixedly connected to one side of the suspension seat (29); a T-shaped connecting plate (34) is fixedly connected to the inner side of the auxiliary seat (35); one end of the T-shaped connecting plate (34) is fixedly connected to the second auxiliary frame (31); an auxiliary spring (36) is installed between the inner side of the T-shaped connecting plate (34) and the auxiliary seat (35); an inclined groove (38) is provided on the inner side of the T-shaped connecting plate (34); the outer walls on both sides of the trapezoidal block (26) are fixedly connected to the second connecting rod (27); one end of the second guide wheel (37) is fixedly connected to the power rod (32); the bottom of the power rod (32) is provided with an arc surface (39), and the arc surface (39) abuts against the inclined groove (38).

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