Pre-embedded supporting leg leveling device of tower crane

Abstract

The utility model discloses a pre-embedded landing leg leveling device of a tower crane, which relates to the technical field of tower cranes and comprises a top plate, a reinforcing plate is arranged below the top plate, a leveling block is arranged above the top plate, and a threaded rod penetrates through the middle of the reinforcing plate and is in threaded connection with the middle of the reinforcing plate. According to the leveling device, the threaded rod is in threaded connection with the reinforcing plate, so that the threaded rod moves in the vertical direction, the leveling block is driven to move through movement of the threaded rod, the bearing plate is driven to move through movement of the leveling block, and therefore the levelness of the tower crane supporting leg can be adjusted; according to the leveling device for the tower crane, the leveling block and the bearing plate are arranged on the supporting legs, the overturning accident caused by the fact that the perpendicularity of the tower crane does not meet the requirement due to the large levelness error of the supporting legs is avoided, the two limiting plates movably penetrate through the limiting holes, the movement of the leveling block and the bearing plate is limited, the leveling block and the bearing plate can only move in the horizontal direction, and the leveling device is reasonable in structural design and convenient to use. Adjustment is easy, and use is more convenient.

Description

Technical Field

[0001] This utility model relates to the field of tower crane technology, and in particular to a leveling device for pre-embedded legs of a tower crane. Background Technology

[0002] A tower crane, also known as a tower hoist, is a rotating crane with its boom mounted on a tall tower. It offers a large working space and is primarily used for the vertical and horizontal transport of materials and the installation of building components during construction.

[0003] For example, Chinese patent CN211523264U discloses a pre-embedded leveling device for tower crane foundation legs, which "includes a fixed leg, the lower surface of the fixed leg is provided with a foundation bottom surface, the upper surface of the foundation bottom surface is provided with foundation reinforcement, the foundation pad layer is provided below the foundation reinforcement, the surface of the fixed leg is fixedly connected to the surface of the foundation reinforcement, and a leveling device is provided between the bottom of the fixed leg and the foundation pad layer, the leveling device including an adjusting bolt trestle." However, in actual use, it is not convenient to adjust the levelness of the tower crane legs, making it inconvenient to use. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a leveling device for pre-embedded outriggers of tower cranes, which solves the technical problem of inconvenience in adjusting the levelness of tower crane outriggers and the relatively inconvenient use of the device.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A leveling device for pre-embedded outriggers of a tower crane includes a top plate, a reinforcing plate below the top plate, and a leveling block above the top plate. A threaded rod is threaded through the middle of the reinforcing plate. Limiting holes are provided on both sides of the upper surface of the top plate. Limiting plates are fixedly connected to both sides of the bottom end of the leveling block. The two limiting plates movably pass through the limiting holes. The top end of the threaded rod movably passes through the top plate. A bearing plate is installed on the upper end of the leveling block.

[0009] Preferably, the bottom surface of the leveling block has a circular groove, the side wall of the circular groove has an annular groove, a connecting ring is provided in the annular groove, the top end of the threaded rod is inserted into the circular groove and fixedly connected with the connecting ring.

[0010] Preferably, mounting grooves are provided on both sides of the upper surface of the leveling block, and mounting blocks are fixedly installed at both ends of the bottom end of the bearing plate. The two mounting blocks are respectively movably inserted into the mounting grooves, and screws are threaded into the two mounting blocks. Each mounting block is threadedly fixed to the leveling block by screws.

[0011] Preferably, a handwheel is fixedly connected to the bottom end of the threaded rod, and support legs are fixedly connected to the three corners of the bottom end of the top plate. Each support leg is fixedly connected through the three corners of the reinforcing plate, and a reinforcing frame is fixedly connected between the three support legs. The reinforcing frame is located below the reinforcing plate.

[0012] (III) Beneficial Effects

[0013] 1. The threaded rod is connected to the reinforcing plate by a threaded connection, allowing the threaded rod to move vertically. The movement of the threaded rod drives the leveling block, which in turn moves the bearing plate, thereby adjusting the levelness of the tower crane outriggers. This prevents overturning accidents caused by excessive outrigger levelness errors leading to non-compliance with verticality requirements. Two limit plates, which move through limit holes, limit the movement of the leveling block and bearing plate, ensuring that they can only move horizontally. This leveling device has a reasonable structural design, is easy to adjust, and is more convenient to use.

[0014] Second, the bearing plate is fixed by threads on the leveling block. When the bearing plate is damaged or aged, it can be easily replaced individually without replacing the entire device. The three support legs are fixedly connected by a reinforcing frame, which plays a role in reinforcement. Attached Figure Description

[0015] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0016] Figure 1 This is a structural diagram of the overall structure of the pre-embedded leg leveling device for the tower crane of this utility model;

[0017] Figure 2 This is a structural diagram of the top plate of this utility model;

[0018] Figure 3 This is a structural diagram of the leveling block of this utility model;

[0019] Figure 4 This is a cross-sectional view of the leveling block of this utility model.

[0020] Legend: 1. Top plate; 11. Support leg; 12. Limiting hole; 2. Leveling block; 21. Limiting plate; 22. Circular groove; 23. Annular groove; 24. Mounting groove; 3. Threaded rod; 31. Handwheel; 4. Bearing plate; 41. Mounting block; 5. Connecting ring; 6. Reinforcing plate; 7. Reinforcing frame. Detailed Implementation

[0021] This application provides a tower crane pre-embedded outrigger leveling device, effectively solving the problem of inconvenient adjustment of tower crane outrigger level and its relatively inconvenient use. This tower crane pre-embedded outrigger leveling device uses a threaded rod connected to a reinforcing plate, allowing the threaded rod to move vertically. The movement of the threaded rod moves the leveling block, which in turn moves the bearing plate, thereby adjusting the level of the tower crane outriggers and preventing overturning accidents caused by large outrigger level errors leading to non-compliance with verticality requirements. Two limiting plates, movable through limiting holes, limit the movement of the leveling block and bearing plate, ensuring they can only move horizontally. The leveling device has a reasonable structural design, is easy to adjust, and is more convenient to use. The bearing plate is threaded onto the leveling block, allowing for easy replacement of damaged or aged bearing plates without replacing the entire device. A reinforcing frame is fixed between the three outriggers, providing reinforcement.

[0022] Example: Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the technical solution in this application embodiment effectively solves the technical problem of inconvenience in adjusting the level of the tower crane outriggers and the resulting inconvenience in use. The overall idea is as follows:

[0023] To address the problems existing in the prior art, this utility model provides a leveling device for pre-embedded outriggers of a tower crane, including a top plate 1, a reinforcing plate 6 below the top plate 1, and a leveling block 2 above the top plate 1. A threaded rod 3 is threadedly connected through the middle of the reinforcing plate 6. Limiting holes 12 are provided on both sides of the upper surface of the top plate 1. Limiting plates 21 are fixedly connected to both sides of the bottom end of the leveling block 2, and the two limiting plates 21 are movable through the limiting holes 12 respectively. The top end of the threaded rod 3 is movable through the top plate 1. A bearing plate 4 is installed on the upper end of the leveling block 2, and a circular groove 22 is provided on the bottom surface of the leveling block 2. The side wall of the leveling block 2 has an annular groove 23, and a connecting ring 5 is provided in the annular groove 23. The top end of the threaded rod 3 is inserted into the circular groove 22 and fixedly connected to the connecting ring 5. The upper surface of the leveling block 2 has mounting grooves 24 on both sides. The bottom ends of the bearing plate 4 are fixedly installed with mounting blocks 41. The two mounting blocks 41 are respectively movably inserted into the mounting grooves 24. Screws are threaded into the two mounting blocks 41. Each mounting block 41 is threadedly fixed to the leveling block 2 by screws. The bottom end of the threaded rod 3 is fixedly connected with a handwheel 31. The three corners of the bottom end of the top plate 1 are fixedly connected with support legs 11. Each support leg 11 is fixedly connected to the top plate 1. Legs 11 are fixed to the three corners of the reinforcing plate 6. A reinforcing frame 7 is fixedly connected between the three supporting legs 11, located below the reinforcing plate 6. The tower crane legs are hoisted above the leveling device. Twisting the handwheel 31 causes the threaded rod 3 to rotate. The rotation of the threaded rod 3 causes the connecting ring 5 to rotate within the annular groove 23. The threaded rod 3 is threadedly connected to the reinforcing plate 6, allowing it to move vertically. This movement of the threaded rod 3 moves the leveling block 2, which in turn moves the bearing plate 4, thereby adjusting the levelness of the tower crane legs and preventing water level issues. The overturning accident caused by the tower crane's failure to meet verticality requirements due to large flatness errors is addressed by using two limiting plates 21 that move through the limiting holes 12 to limit the movement of the leveling block 2 and the bearing plate 4, allowing them to move only in the horizontal direction. This leveling device has a reasonable structural design, is easy to adjust, and is more convenient to use. The bearing plate 4 is fixed to the leveling block 2 by threads, so when the bearing plate 4 is damaged or aged, it can be easily replaced individually without replacing the entire device. The three support legs 11 are fixedly connected by a reinforcing frame 7, which provides reinforcement.

[0024] Working principle:

[0025] The first step is to hoist the tower crane outriggers above the leveling device. Twist the handwheel 31 to rotate the threaded rod 3. The rotation of the threaded rod 3 will drive the connecting ring 5 to rotate in the annular groove 23. The threaded rod 3 is threadedly connected to the reinforcing plate 6, allowing the threaded rod 3 to move vertically. The movement of the threaded rod 3 drives the leveling block 2 to move, and the movement of the leveling block 2 drives the bearing plate 4 to move. This can adjust the levelness of the tower crane outriggers and avoid overturning accidents caused by the tower crane not meeting the verticality requirements due to large errors in the levelness of the outriggers. The two limiting plates 21 move through the limiting holes 12 to limit the movement of the leveling block 2 and the bearing plate 4, so that the leveling block 2 and the bearing plate 4 can only move in the horizontal direction. The leveling device has a reasonable structural design, is easy to adjust, and is more convenient to use.

[0026] The second step involves fixing a bearing plate 4 to the leveling block 2 via threads. When the bearing plate 4 is damaged or aged, it can be easily replaced individually without replacing the entire device. A reinforcing frame 7 is fixedly connected between the three support legs 11, which serves to reinforce the device.

[0027] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A leveling device for pre-embedded legs of a tower crane, comprising a top plate (1), characterized in that: A reinforcing plate (6) is provided below the top plate (1), and a leveling block (2) is provided above the top plate (1). A threaded rod (3) is threaded through the middle of the reinforcing plate (6). Limiting holes (12) are provided on both sides of the upper surface of the top plate (1), and limiting plates (21) are fixedly connected to both sides of the bottom end of the leveling block (2). Among them, the two limiting plates (21) respectively move through the limiting hole (12), and the top end of the threaded rod (3) moves through the top plate (1); The leveling block (2) has a bearing plate (4) installed on its upper end.

2. The tower crane pre-embedded leg leveling device according to claim 1, characterized in that: The bottom surface of the leveling block (2) is provided with a circular groove (22); The circular groove (22) has an annular groove (23) on its side wall.

3. A leveling device for pre-embedded legs of a tower crane according to claim 2, characterized in that: A connecting ring (5) is provided inside the annular groove (23); The top end of the threaded rod (3) is inserted into the circular groove (22) and fixedly connected to the connecting ring (5).

4. The tower crane pre-embedded leg leveling device according to claim 1, characterized in that: The leveling block (2) has mounting grooves (24) on both sides of its upper surface.

5. A leveling device for pre-embedded legs of a tower crane according to claim 4, characterized in that: Mounting blocks (41) are fixedly installed at both ends of the bottom of the bearing plate (4), and the two mounting blocks (41) are respectively movably inserted into the mounting groove (24); Each of the two mounting blocks (41) is threaded with screws, and each mounting block (41) is threadedly fixed to the leveling block (2) by screws.

6. A leveling device for pre-embedded legs of a tower crane according to claim 1, characterized in that: A handwheel (31) is fixedly connected to the bottom end of the threaded rod (3), and support legs (11) are fixedly connected to the three corners of the bottom end of the top plate (1). Each support leg (11) is fixedly connected to the three corners of the reinforcing plate (6). Among them, a reinforcing frame (7) is fixedly connected between the three supporting legs (11), and the reinforcing frame (7) is located below the reinforcing plate (6).

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