Steel box girder hoisting equipment crossing existing road

Abstract

The utility model provides existing road crossing steel box girder hoisting equipment which comprises a steel box girder body, guide rails are symmetrically and fixedly arranged on the two sides of the top of the steel box girder body, the guide rails are T-shaped, and a fixing plate is fixedly arranged between the rear ends of the guide rails on the two sides. A moving plate can be adjusted through driving mechanisms such as a servo motor, a first gear, a rotating rod, a second gear, a third gear and a rack, so that the moving plate slides along a guide rail, the moving plate, a steel wire rope, a hanging ring and the like can be transferred to the top of the other end of the steel box girder body, and the steel box girder body can be conveniently transferred through two cranes; therefore, the steel box girder body is constructed, the influence on the whole construction progress is avoided, and the practicability is high; and through the limiting effect of the guide rails and the sliding grooves, the stability between the moving plates and the guide rails can be improved, and therefore the stability of the steel box girder body in the hoisting process is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of steel box girder hoisting equipment, in particular to a steel box girder hoisting equipment spanning an existing highway. Background Art

[0002] Steel box girder, also known as steel plate box girder, is usually used in large span bridges.

[0003] The Chinese utility model patent with announcement number 218931463U proposes a steel box girder lifting equipment, including a hoist with a fixed frame installed at the bottom of the hoist; a moving block, with moving blocks slidably installed on the left and right sides of the bottom of the fixed frame, the bottom of the moving block is fixedly connected to a lifting rope, and the end of the lifting rope away from the moving block is fixedly connected to a hook; this technical solution uses a crane and a hoist to lift the fixed frame and the steel box girder body, but when lifting the low steel box girder across an existing bridge, due to the limited site environment, the existing lifting equipment cannot be moved and converted on the steel box girder, which will affect the overall installation progress of the steel box girder and has low practicality.

[0004] To this end, the utility model provides a steel box girder hoisting device that spans an existing highway. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a steel box girder lifting equipment across an existing highway to solve the problems raised in the above-mentioned background technology. The present invention adjusts the movement of the movable plate through the driving mechanism, and can transfer the movable plate and the wire rope, lifting ring, etc. to the top of the other end of the steel box girder body, so as to facilitate the transfer of the steel box girder body by two cranes, or to lift it together, so as to construct the steel box girder body and avoid affecting the overall construction progress. The utility model is highly practical.

[0006] In order to achieve the above-mentioned purpose, the present invention is implemented through the following technical solutions: a steel box girder lifting equipment across an existing highway, comprising a steel box girder body, guide rails symmetrically fixedly arranged on both sides of the top of the steel box girder body, the guide rails being in a "T" shape, a fixed plate fixedly arranged between the rear ends of the guide rails on both sides, a movable plate movably arranged between the front ends of the guide rails on both sides through a driving mechanism, slide grooves symmetrically provided at the bottoms of both ends of the movable plate, and the guide rails are limitedly slidably arranged inside the slide grooves.

[0007] Furthermore, the driving mechanism includes a servo motor, and the servo motor is fixedly installed inside the inner wall of the bottom end of the movable plate.

[0008] According to the equipment for lifting steel box girders across existing highways as described in claim 2, a rotating rod is provided inside the bottom end of the movable plate for limiting rotation, and both ends of the rotating rod are provided inside the slide groove.

[0009] Furthermore, third gears are fixedly provided at both ends of the rotating rod, a rack is fixedly provided at the bottom of one end of the guide rail, and the third gear and the rack are meshed with each other.

[0010] Furthermore, a first gear is fixedly provided on the output shaft of the servo motor, and a second gear is fixedly provided on the rotating rod at a position corresponding to the first gear.

[0011] Furthermore, the second gear and the first gear are parallel to and meshed with each other, and the specifications of the first gear are smaller than those of the second gear.

[0012] Furthermore, a limiting rod is fixedly provided between the front ends of the guide rails on both sides, and the limiting rod is provided on the front side of the movable plate.

[0013] Furthermore, steel wire ropes are fixedly provided at the four corners of the top of the movable plate and the fixed plate, and a lifting ring is fixedly provided at the top end of the steel wire rope.

[0014] The beneficial effects of the utility model are as follows: the utility model is a steel box girder lifting equipment across an existing highway, which can adjust the movable plate through a driving mechanism such as a servo motor, a first gear, a rotating rod, a second gear, a third gear and a rack, so that the movable plate slides along the guide rail, and can transfer the movable plate and the wire rope, the lifting ring, etc. to the top of the other end of the steel box girder body, so that the steel box girder body can be transferred by two cranes, or lifted together, so as to construct the steel box girder body and avoid affecting the overall construction progress, and has high practicality; through the limiting effect of the guide rail and the slide groove, the stability between the movable plate and the guide rail can be improved, thereby improving the stability of the steel box girder body during the lifting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural diagram of a steel box girder hoisting device that spans an existing highway in this utility model;

[0016] Figure 2 This is a front cross-sectional view of a steel box girder hoisting device for crossing an existing highway according to the utility model;

[0017] Figure 3 This utility model is a kind of steel box girder hoisting equipment across existing highway Figure 2 Enlarged view of point A in the middle;

[0018] Figure 4 This is a structural diagram of a movable plate for a steel box girder hoisting device across an existing highway;

[0019] In the figure: 1. Steel box girder body; 2. Guide rail; 3. Moving plate; 4. Fixed plate; 5. Steel wire rope; 6. Lifting ring; 7. Slide; 8. Servo motor; 9. First gear; 10. Rotating rod; 11. Second gear; 12. Third gear; 13. Rack. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0021] See also Figures 1 to 4 The utility model provides a technical solution: a steel box girder lifting equipment spanning an existing highway, comprising a steel box girder body 1, guide rails 2 are symmetrically fixedly arranged on both sides of the top of the steel box girder body 1, the guide rails 2 are in the shape of a "T", a fixed plate 4 is fixedly arranged between the rear ends of the guide rails 2 on both sides, and a movable plate 3 is movably arranged between the front ends of the guide rails 2 on both sides through a driving mechanism, and a slide groove 7 is symmetrically provided at the bottom of both ends of the movable plate 3, and the guide rails 2 are limited and slidably arranged inside the slide groove 7, and the guide rails 2 and the slide groove 7 can limit each other, thereby improving the stability of the movable plate 3, and facilitating the lateral adjustment of the movable plate 3 by the driving mechanism, thereby completing the transfer of the steel box girder body 1 across the existing highway.

[0022] In this embodiment, the driving mechanism includes a servo motor 8, which is fixedly mounted on the inner wall of the bottom end of the movable plate 3. A rotating rod 10 is provided at the bottom end of the movable plate 3 for limiting rotation. Both ends of the rotating rod 10 are arranged inside the slide groove 7. A third gear 12 is fixedly provided at both ends of the rotating rod 10. A rack 13 is fixedly provided at the bottom of one end of the guide rail 2. The third gear 12 and the rack 13 are meshed with each other. A first gear 9 is fixedly provided on the output shaft of the servo motor 8, and a second gear 11 is fixedly provided on the rotating rod 10 at a position corresponding to the first gear 9. The second gear 11 is parallel to the first gear 9 and meshed with the first gear 9. The specifications of the first gear 9 are smaller than those of the second gear 11. The servo motor 8 can rotate and adjust the rotating rod 10 through the first gear 9 and the second gear 11. The rotating rod 10 moves and adjusts the movable plate 3 through the meshing action of the third gear 12 and the rack 13, which is convenient for subsequent transfer of the steel box girder body 1.

[0023] In this embodiment, a limiting rod is fixedly arranged between the front ends of the guide rails 2 on both sides. The limiting rod is arranged on the front side of the movable plate 3. The movable plate 3 can be limited by the limiting rod to prevent slipping between the movable plate 3 and the guide rail 2, thereby improving the stability of the movable plate 3.

[0024] In this embodiment, steel wire ropes 5 are fixed at the four corners of the top of the movable plate 3 and the fixed plate 4, and a lifting ring 6 is fixed at the top of the steel wire rope 5. The steel wire rope 5 and the lifting ring 6 are used to conveniently connect the equipment to the crane, so that the steel box girder body 1 can be lifted.

[0025] When the steel box girder lifting equipment spanning the existing highway is used, the guide rails 2 are welded and fixed to both sides of the top of the steel box girder body 1, and the movable plate 3 is installed between the guide rails 2 through the driving mechanism, the limiting rod is fixed between the front end of the guide rails 2, and the fixed plate 4 is welded and fixed between the rear end of the guide rails 2, so as to facilitate limiting the front and rear sides of the movable plate 3 by the limiting rod and the fixed plate 4 to prevent the movable plate 3 from slipping, and start the servo motor 8. The servo motor 8 drives the rotating rod 10 to rotate through the meshing action of the first gear 9 and the second gear 11. The rotating rod 10 drives the movable plate 3 to move between the guide rails 2 through the meshing action of the third gear 12 and the rack 13, and moves the movable plate 3 to the upper middle position of the steel box girder body 1, and is fixedly connected to the hook of the crane on one side of the existing highway through the lifting ring 6 and the wire rope 5. Then, the steel box girder body 1 is lifted up by this crane and the equipment, and the steel box girder body 1 is moved. The crane on the other side of the existing highway is fixed between the wire rope 5 and the lifting ring 6 on the top of the fixed plate 4, and the servo motor 8 is controlled to rotate in the opposite direction. The movable plate 3 is adjusted by the driving mechanism such as the servo motor 8, the first gear 9, the rotating rod 10, the second gear 11, the third gear 12 and the rack 13, so that the movable plate 3 moves to the top of one end of the steel box girder body 1 between the guide rails 2 through the slide groove 7, so that the movable plate 3 and the fixed plate 4 are distributed on both sides of the top of the steel box girder body 1, which is convenient for transferring the steel box girder body 1 by two cranes, or lifting it together, so as to construct the steel box girder body 1, avoid affecting the overall construction progress, and improve the stability of the steel box girder body 1 during the lifting process.

[0026] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A steel box girder hoisting device for crossing an existing highway, comprising a steel box girder body (1), characterized in that: Guide rails (2) are symmetrically fixedly arranged on both sides of the top of the steel box girder body (1), and the guide rails (2) are in a T-shaped shape. A fixed plate (4) is fixedly arranged between the rear ends of the guide rails (2) on both sides, and a movable plate (3) is movably arranged between the front ends of the guide rails (2) on both sides through a driving mechanism. Slide grooves (7) are symmetrically opened at the bottoms of both ends of the movable plate (3), and the guide rails (2) are limitedly slidably arranged inside the slide grooves (7).

2. The equipment for hoisting steel box girders across existing highways according to claim 1, characterized in that: The driving mechanism comprises a servo motor (8), and the servo motor (8) is fixedly mounted inside the inner wall of the bottom end of the moving plate (3).

3. The equipment for hoisting steel box girders across existing highways according to claim 2, characterized in that: A rotating rod (10) is provided inside the bottom end of the movable plate (3) for limited rotation, and both ends of the rotating rod (10) are provided inside the sliding groove (7).

4. The equipment for hoisting steel box girders across existing highways according to claim 3, characterized in that: A third gear (12) is fixedly provided at both ends of the rotating rod (10), a rack (13) is fixedly provided at the bottom of one end of the guide rail (2), and the third gear (12) and the rack (13) are meshed with each other.

5. The equipment for hoisting steel box girders across existing highways according to claim 4, characterized in that: A first gear (9) is fixedly provided on the output shaft of the servo motor (8), and a second gear (11) is fixedly provided on the rotating rod (10) at a position corresponding to the first gear (9).

6. The equipment for hoisting steel box girders across existing highways according to claim 5, characterized in that: The second gear (11) and the first gear (9) are parallel to each other and meshed with each other, and the specification of the first gear (9) is smaller than that of the second gear (11).

7. The equipment for hoisting steel box girders across existing highways according to claim 1, characterized in that: A limiting rod is fixedly arranged between the front ends of the guide rails (2) on both sides, and the limiting rod is arranged on the front side of the movable plate (3).

8. The equipment for hoisting steel box girders across existing highways according to claim 1, characterized in that: Steel wire ropes (5) are fixedly provided at the four corners of the top of the movable plate (3) and the fixed plate (4), and a lifting ring (6) is fixedly provided at the top of the steel wire rope (5).

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