Automatic leveling support for steel box girder installation

Abstract

The utility model belongs to the technical field of bridge box girder construction auxiliary equipment, and particularly relates to an automatic leveling support for installing a steel box girder, which comprises a bottom plate, a plurality of positioning holes are arranged at the bottom of the bottom plate, two jacking hydraulic cylinders are fixedly arranged at the top of the bottom plate, and a same top plate is arranged at the tops of the two jacking hydraulic cylinders. Through the arrangement of the positioning disc, the rotating shaft, the adjusting rod, the top block, the rotating handle, the positioning screw rod and the protection box, after the leveling support is fixed to the top of a bearing pile, the position of the top plate can be adjusted according to the installation position of a steel box girder, and the steel box girder is fixed to the top of the bearing pile. The rotating handle is rotated to separate the top block from the positioning rod and enable the positioning rod to be separated from the positioning hole, then the positioning disc at the top is rotated, the angle of the top plate at the top can be adjusted, the overall direction of the support can be conveniently adjusted through the adjusting structure, and the support can be better aligned with the mounting position of the steel box girder; and the problem of stress concentration caused by uneven foundation or installation angle deviation is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of auxiliary equipment for bridge box girder construction, and in particular to an automatic leveling bracket for steel box girder installation. Background Technology

[0002] Steel box girders, also known as steel plate box girders, are a common steel structure used for load-bearing in long-span bridges. They are generally used on bridges with large spans and are named for their box-like shape. A steel box girder is constructed by connecting top plate, bottom plate, web, transverse diaphragms, longitudinal diaphragms, and stiffening ribs using a fully welded method. Compared to roadbed construction, steel box girder construction has the advantages of high efficiency and convenience, and it does not have the problems of reduced smoothness and safety hazards caused by roadbed settlement. Therefore, it has been widely used in bridge construction. Due to the certain construction errors in the construction of bridge load-bearing piles, there may be vertical positional differences when steel box girders placed on two adjacent bridge load-bearing piles are connected, which has a certain impact on the installation of steel box girders. Therefore, patent publication number "CN217896273U" discloses an automatic leveling bracket for steel box girder installation. Through a laser emitter installed on the edge of the top plate, it can work with a reflector to prompt workers whether the upper surface of the top plate is horizontal and the position is aligned, thereby realizing the leveling function of the steel beam placed on the upper surface of the top plate.

[0003] However, the base plate in this scheme cannot be quickly adjusted in angle, making it inconvenient to adjust the overall direction of the support to better align it with the installation position of the steel box girder. Therefore, an automatic leveling support for steel box girder installation is proposed. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing an automatic leveling bracket for steel box girder installation.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an automatic leveling bracket for installing steel box girders, comprising a base plate, the bottom of which is provided with multiple positioning holes, two lifting hydraulic cylinders fixedly provided on the top of the base plate, the top of the two lifting hydraulic cylinders being provided with the same top plate, the bottom of which is provided with multiple strain sensors, the top of which is provided with an alarm structure, and the bottom of which is provided with an adjustment structure.

[0006] As a further description of the above technical solution:

[0007] The top of the top plate is provided with multiple mounting slots, and each of the mounting slots is provided with a rubber spring.

[0008] As a further description of the above technical solution:

[0009] The alarm structure includes a protective box fixedly connected to the base plate. The protective box contains a battery, a central processing unit, and a wireless transmission module. A three-color light is fixedly installed on the top of the protective box.

[0010] As a further description of the above technical solution:

[0011] The adjustment structure includes a rotating shaft fixedly connected to the base plate. A positioning plate is movably provided at the bottom end of the rotating shaft. Multiple sliders are movably provided at the top of the positioning plate. A vertical rod is fixedly provided at the top of each slider. The vertical rod is fixedly connected to the bottom of the base plate. A first mounting hole and a second mounting hole are respectively provided on the top and one side of the positioning plate. The first mounting hole and the second mounting hole communicate with each other. A positioning rod is movably provided in the first mounting hole. An adjusting rod is movably provided in the second mounting hole. A rotating handle is fixedly provided at one end of the adjusting rod. The other end of the adjusting rod extends into the first mounting hole, and a top block is fixedly provided on its outer wall. A protective box is fixedly provided on the outside of the positioning plate.

[0012] As a further description of the above technical solution:

[0013] A positioning screw is movably mounted on the handle, and an internal threaded hole is provided on one side of the positioning disc. The positioning screw and the internal threaded hole are compatible.

[0014] As a further description of the above technical solution:

[0015] The top of the positioning disk is provided with a circular hole, and a bearing is fixedly installed in the circular hole. The inner ring of the bearing is fixedly sleeved on the rotating shaft.

[0016] As a further description of the above technical solution:

[0017] The top of the positioning disk is provided with a circular track, and the slider is movably connected to the circular track.

[0018] This utility model has the following beneficial effects:

[0019] 1. Compared with existing technologies, this automatic leveling bracket for steel box girder installation, through the setting of a positioning plate, rotating shaft, slider, vertical rod, positioning rod, adjusting rod, top block, rotating handle, positioning screw, and protective box, allows the top plate position to be adjusted according to the installation position of the steel box girder after the leveling bracket is fixed on the top of the load-bearing pile. Rotating the rotating handle separates the top block from the positioning rod and causes the positioning rod to disengage from the positioning hole. Then, rotating the top positioning plate can adjust the angle of the top plate. The setting of the adjustment structure can easily adjust the overall direction of the bracket, making it better aligned with the installation position of the steel box girder, and reducing stress concentration problems caused by uneven foundation or installation angle deviation.

[0020] 2. Compared with existing technologies, this automatic leveling bracket for steel box girder installation utilizes strain sensors, a protective box, a battery, a central processing unit, a wireless transmission module, and a three-color indicator light. Multiple strain sensors can monitor the stress and strain of each component in real time and transmit the data to the central processing unit. The central processing unit then uses data analysis software and transmits the data wirelessly to relevant regulatory departments. If the stress value changes excessively or exceeds the preset value by too much, the three-color indicator light flashes. This alarm structure not only visually displays the stress state of the bracket but also provides early warnings of potential structural damage risks based on preset safety thresholds, allowing for timely reinforcement or adjustment measures to ensure the safe installation of the steel box girder. Attached Figure Description

[0021] Figure 1 This is a first-view three-dimensional structural diagram of an automatic leveling bracket for installing steel box girders proposed in this utility model;

[0022] Figure 2 This is a second-view three-dimensional structural diagram of an automatic leveling bracket for installing steel box girders proposed in this utility model;

[0023] Figure 3 This is a three-dimensional structural diagram of the bottom plate of an automatic leveling bracket for installing steel box girders proposed in this utility model.

[0024] Figure 4 This is a three-dimensional schematic diagram of the adjustment structure in an automatic leveling bracket for installing steel box girders proposed in this utility model;

[0025] Figure 5 This is a side sectional view of the adjustment structure in an automatic leveling bracket for steel box girder installation proposed in this utility model;

[0026] Figure 6 This is an enlarged structural diagram of part A in an automatic leveling bracket for installing a steel box girder proposed in this utility model;

[0027] Figure 7 This is a front sectional view of the alarm structure in an automatic leveling bracket for installing steel box girders proposed in this utility model.

[0028] Legend:

[0029] 1. Base plate; 2. Lifting hydraulic cylinder; 3. Top plate; 4. Rubber spring; 5. Strain sensor; 6. Alarm structure; 601. Protective box; 602. Battery; 603. Central processing unit; 604. Wireless transmission module; 605. Tri-color light; 7. Adjustment structure; 701. Positioning plate; 702. Rotating shaft; 703. Sliding block; 704. Vertical rod; 705. Positioning rod; 706. Adjusting rod; 707. Top block; 708. Rotating handle; 709. Positioning screw; 710. Protective box; 8. Positioning hole. Detailed Implementation

[0030] 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.

[0031] Reference Figures 1 to 7 The present invention provides an automatic leveling bracket for installing steel box girders: including a base plate 1, the bottom of the base plate 1 is provided with multiple positioning holes 8, the top of the base plate 1 is fixedly provided with two lifting hydraulic cylinders 2, the top of the two lifting hydraulic cylinders 2 is provided with the same top plate 3, the top of the top plate 3 is provided with multiple mounting grooves, and each of the multiple mounting grooves is provided with a rubber spring 4. The rubber spring 4 is provided during the hoisting and placement of the steel box girder to effectively buffer the impact force and prevent damage to the bracket and the steel box girder. The bottom of the top plate 3 is provided with multiple strain sensors 5.

[0032] To achieve early warning, an alarm structure 6 is provided on the top of the base plate 1. The alarm structure 6 includes a protective box 601 fixedly connected to the base plate 1. The protective box 601 is equipped with a battery 602, a central processing unit 603, and a wireless transmission module 604. A tri-color light 605 is fixedly provided on the top of the protective box 601. Multiple strain sensors 5 can monitor the stress and strain of each component in real time and transmit the data to the central processing unit 603. The central processing unit 603 transmits the data to the relevant regulatory departments through data analysis software and the wireless transmission module 604. If the stress value changes too much or exceeds the preset value by too much, the tri-color light 605 will be turned on and flash. The alarm structure 6 can not only intuitively display the stress state of the support, but also provide early warning of possible structural damage risks based on preset safety thresholds, so as to take timely measures to reinforce or adjust and ensure the safe installation of the steel box girder.

[0033] To achieve angle adjustment, the bottom of the base plate 1 is provided with an adjustment structure 7. The adjustment structure 7 includes a rotating shaft 702 fixedly connected to the base plate 1. A positioning plate 701 is movably mounted at the bottom end of the rotating shaft 702. A circular hole is provided at the top of the positioning plate 701, and a bearing is fixedly mounted inside the circular hole. The inner ring of the bearing is fixedly sleeved on the rotating shaft 702. Multiple sliders 703 are movably mounted at the top of the positioning plate 701. A circular track is provided at the top of the positioning plate 701, and the sliders 703 are movably connected to the circular track. A vertical rod 704 is fixedly mounted at the top of each slider 703, and the vertical rod 704 is fixedly connected to the bottom of the base plate 1. The top and one side of the positioning plate 701 are respectively provided with a first mounting hole and a second mounting hole, which are connected. A positioning rod 705 is movably mounted in the first mounting hole, and an adjusting rod 706 is movably mounted in the second mounting hole. A handle is fixedly mounted at one end of the adjusting rod 706. A positioning screw 709 is movably mounted on the rotating handle 708. An internal threaded hole is provided on one side of the positioning plate 701. The positioning screw 709 and the internal threaded hole are compatible. The other end of the adjusting rod 706 extends into the first mounting hole, and a top block 707 is fixedly mounted on its outer wall. A protective box 710 is fixedly mounted on the outside of the positioning plate 701. After the equipment is installed on the top of the weighing pile, the rotating handle 708 is rotated 90 degrees clockwise. The rotating handle 708 drives the top block 707 to rotate through the adjusting rod 706. When the top block 707 disengages from the bottom of the positioning rod 705, the top end of the positioning rod 705 is disengaged from the positioning hole 8. Then, the positioning plate 701 on the top is rotated to adjust the angle of the top plate 3. The setting of the adjusting structure 7 can facilitate the adjustment of the overall direction of the support, so that it is better aligned with the installation position of the steel box girder, and reduce the stress concentration problem caused by uneven foundation or installation angle deviation.

[0034] Working Principle: In use, first install the equipment on top of the load-bearing pile. Then, adjust the position of the top plate 3 according to the installation position of the steel box girder. Personnel use a special key to open the inspection door on the front of the protective box 710. Next, rotate the positioning screw 709 counterclockwise until one end disengages from the internal threaded hole. Then, rotate the handle 708 clockwise by 90 degrees. The handle 708 drives the top block 707 to rotate via the adjusting rod 706. When the top block 707 disengages from the bottom of the positioning rod 705, the top of the positioning rod 705 disengages from the positioning hole 8. Then, rotate the positioning disc 701 on top to adjust the angle of the top plate 3. After adjustment, rotate the adjusting rod 706 counterclockwise. The adjusting rod 706 then drives the top block 707 to move the positioning rod 705... Push it upwards to insert it into the positioning hole 8 to position the base plate 1. Then reinstall the positioning screw 709 to complete the positioning of the rotating handle 708. Multiple strain sensors 5 can monitor the stress and strain of each component in real time and transmit the data to the central processing unit 603. The central processing unit 603 transmits the data to the relevant regulatory department through data analysis software and wireless transmission module 604. If the stress value changes too much or exceeds the preset value by too much, the tri-color light 605 will be turned on and flash. The alarm structure 6 can not only intuitively display the stress state of the support, but also provide early warning of possible structural damage risks based on the preset safety threshold, so as to take timely measures to reinforce or adjust and ensure the safe installation of the steel box girder.

[0035] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model 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 the present utility model should be included within the protection scope of the present utility model.

Claims

1. An automatic leveling bracket for installing steel box girders, comprising a base plate (1), characterized in that: The bottom of the base plate (1) is provided with multiple positioning holes (8), the top of the base plate (1) is fixedly provided with two lifting hydraulic cylinders (2), the top of the two lifting hydraulic cylinders (2) is provided with the same top plate (3), the bottom of the top plate (3) is provided with multiple strain sensors (5), the top of the base plate (1) is provided with an alarm structure (6), and the bottom of the base plate (1) is provided with an adjustment structure (7).

2. The automatic leveling bracket for installing steel box girders according to claim 1, characterized in that: The top of the top plate (3) is provided with multiple mounting slots, and each of the multiple mounting slots is provided with a rubber spring (4).

3. The automatic leveling bracket for installing steel box girders according to claim 1, characterized in that: The alarm structure (6) includes a protective box (601) fixedly connected to the base plate (1). The protective box (601) is equipped with a battery (602), a central processing unit (603) and a wireless transmission module (604). The top of the protective box (601) is equipped with a three-color light (605).

4. The automatic leveling bracket for installing steel box girders according to claim 1, characterized in that: The adjustment structure (7) includes a rotating shaft (702) fixedly connected to the base plate (1). A positioning plate (701) is movably provided at the bottom end of the rotating shaft (702). A plurality of sliders (703) are movably provided at the top of the positioning plate (701). A vertical rod (704) is fixedly provided at the top of each of the sliders (703). The vertical rod (704) is fixedly connected to the bottom of the base plate (1). A first mounting hole and a second mounting hole are provided on the top and one side of the positioning plate (701), respectively. The first mounting hole and the second mounting hole are connected. A positioning rod (705) is movably provided in the first mounting hole. An adjustment rod (706) is movably provided in the second mounting hole. A rotating handle (708) is fixedly provided at one end of the adjustment rod (706). The other end of the adjustment rod (706) extends into the first mounting hole, and a top block (707) is fixedly provided on its outer wall. A protective box (710) is fixedly provided on the outside of the positioning plate (701).

5. The automatic leveling bracket for installing steel box girders according to claim 4, characterized in that: A positioning screw (709) is movably provided on the handle (708), and an internal threaded hole is provided on one side of the positioning disk (701). The positioning screw (709) and the internal threaded hole are compatible.

6. The automatic leveling bracket for installing steel box girders according to claim 4, characterized in that: The top of the positioning disk (701) is provided with a circular hole, and a bearing is fixedly installed in the circular hole. The inner ring of the bearing is fixedly sleeved on the rotating shaft (702).

7. The automatic leveling bracket for installing steel box girders according to claim 4, characterized in that: The top of the positioning disk (701) is provided with a circular track, and the slider (703) is movably connected to the circular track.

Images