Integral pushing device for steel box girder

Abstract

The utility model provides a steel box girder integral pushing device which comprises a supporting frame, a supporting plate is arranged at the upper end of the supporting frame, a plurality of pushing mechanisms are arranged at the upper end of the supporting plate, the upper ends of the pushing mechanisms are connected with a mounting plate, and a pushing mechanism is arranged in the middle of the upper end of the mounting plate. According to the integral pushing device for the steel box girder, the pushing mechanism can be used for pushing the girder body, and the spacing and the height between the limiting plates can be adjusted through the limiting assemblies to limit the girder body, so that the integral pushing device for the steel box girder has the advantages of being simple in structure, convenient to use and high in practicability. It is ensured that the beam body is kept stable in the pushing process, beam body deviation or swing caused by external force is avoided, and the risk of structural instability is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of jacking devices, and particularly relates to an integral jacking device for steel box girders. Background Technique

[0002] The integral jacking device for steel box girders generally refers to construction equipment used in bridge construction for long-span or special environments. After prefabricating steel box girder segments efficiently at the bridge site, it can complete the erection of the main bridge structure through gradual horizontal propulsion. In the prior art, a moving slide rail is usually arranged above a support frame, a chute is arranged inside the moving slide rail, and an object placement platform is slidably connected inside the chute to push the object in the left-right direction. However, in this method, limit plates for limiting the object are not arranged at the front and rear ends of the moving slide rail. The lack of limiting measures makes it difficult for the steel box girder to maintain an accurate position and direction during jacking, affecting the construction accuracy, which may lead to the final deviation of the bridge position and affect the structural safety and service performance.

[0003] For example, the utility model with the publication number CN219862428U discloses an integral jacking device for steel box girders. In the technical solution of this patent, a moving slide rail is arranged above a support column, a chute is arranged above the moving slide rail, an object carrying platform is slidably arranged in the chute, and a driving mechanism for driving the object carrying platform to move is arranged on the moving slide rail, so as to perform jacking operations on the beam body in the left-right direction. However, in this method, limit plates for limiting the beam body are not arranged on the front and rear sides of the moving slide rail. Without limiting measures, the steel box girder may move or swing accidentally due to external forces (such as wind force, vibration) during jacking, affecting the stability of the overall structure. Content of the Utility Model

[0004] In view of this, aiming at the deficiencies of the prior art, the utility model provides an integral jacking device for steel box girders, which can not only push the beam body through a jacking mechanism, but also limit the beam body by adjusting the distance and height between the limit plates through a limiting component, ensuring that the beam body remains stable during jacking, avoiding the deviation or swing of the beam body caused by external forces, and reducing the risk of structural instability.

[0005] To solve the above technical problems, the technical solution adopted by the utility model is: an integral jacking device for steel box girders, including a support frame, a support plate is arranged at the upper end of the support frame, a plurality of jacking mechanisms are arranged at the upper end of the support plate, an installation plate is connected to the upper end of the jacking mechanism, a propulsion mechanism is arranged in the middle of the upper end of the installation plate, and limiting components for limiting the beam body are arranged at both ends of the installation plate.

[0006] As a further improvement of the present utility model, the propulsion mechanism includes sliding grooves symmetrically opened at the upper end of the mounting plate. Sliders are slidably connected inside the sliding grooves. Placement platforms for placing the beam body are arranged at the upper ends of the sliders. Reserved bolt fixing holes are evenly arranged on the placement platforms. A fixing plate is connected between the two sliders. A number of push cylinders are arranged at the right end of the mounting plate, and the output ends of the push cylinders are all connected to the fixing plate.

[0007] As a further improvement of the present utility model, the limiting component includes grooves arranged at the front and rear ends of the mounting plate. Screws are rotatably connected in the middle of the grooves. Moving plates threadedly connected to the screws are slidably connected inside the grooves. Motors are fixedly connected to the front and rear ends of the mounting plate, and the output ends of the motors are connected to the screws through couplings. A number of limiting members are evenly arranged at the upper ends of the moving plates.

[0008] As a further improvement of the present utility model, the limiting member includes a mounting frame arranged at the upper end of the moving plate. A telescopic push rod is arranged at the bottom of the mounting frame. A limiting plate is connected to the upper end of the telescopic push rod, and the limiting plate is slidably connected to the mounting frame.

[0009] As a further improvement of the present utility model, slide rods for assisting the movement of the moving plate are arranged inside the grooves, and the slide rods are slidably connected to the moving plates.

[0010] As a further improvement of the present utility model, the jacking mechanism includes jacking cylinders evenly arranged at the upper end of the support plate, and the output ends of the jacking cylinders are fixedly connected to the bottom of the mounting plate.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] First, by providing the limiting component, starting the motor can rotate the screw. The rotation of the screw drives the moving plate to move back and forth along the groove, thereby adjusting the distance between the limiting plates according to the width of the beam body. Then, start the telescopic push rod to drive the limiting plate to move up and down along the mounting frame, so as to adjust the height of the limiting plate according to the height of the beam body, and thus the beam body can be limited. The limiting component can ensure that the beam body remains stable during the jacking process, avoid the deviation or swing of the beam body caused by external forces, and reduce the risk of structural instability.

[0013] Second, reserved bolt fixing holes are evenly arranged on the placement platform. The beam body is firmly connected to the placement platform through bolts, enhancing the stability of the beam body during the jacking process, reducing the displacement caused by vibration or external forces, and ensuring that the beam body remains stable during jacking.

[0014] Third, a number of slide rods are arranged inside the grooves, and the slide rods are slidably connected to the moving plates. The arranged slide rods can support the moving plates and improve the stability of the moving plates.

[0015] Fourthly, the pushing mechanism includes jacking cylinders evenly arranged at the upper end of the support plate. The output ends of the jacking cylinders are fixedly connected to the bottom of the mounting plate. By evenly distributing multiple jacking cylinders at the bottom of the entire mounting plate, the weight can be effectively shared, preventing local overloading and ensuring the safety and stability of the structure. Brief Description of the Drawings

[0016] The present utility model will be further described in detail below in conjunction with the drawings and specific embodiments.

[0017] Figure 1 is the structural schematic diagram of the present utility model;

[0018] Figure 2 is the structural schematic diagram of the limiting component of the present utility model;

[0019] Figure 3 is the sectional structural schematic diagram of the limiting member of the present utility model;

[0020] Figure 4 is the front view structural schematic diagram of the present utility model.

[0021] In the figure: 101, support frame; 102, support plate; 103, mounting plate; 104, slider; 105, placement platform; 106, fixing plate; 107, pushing oil cylinder; 108, jacking oil cylinder; 109, reserved bolt fixing hole; 201, groove; 202, screw rod; 203, moving plate; 204, motor; 205, mounting frame; 206, telescopic push rod; 207, limiting plate; 208, sliding rod. Specific Embodiments

[0022] To better understand the present utility model, the content of the present utility model will be further clearly elaborated below in conjunction with embodiments. However, the protection scope of the present utility model is not limited to the following embodiments only. In the following description, a large number of specific details are given to provide a more thorough understanding of the present utility model. However, it is obvious to those skilled in the art that the present utility model can be implemented without one or more of these details.

[0023] Such as Figure 1 、 2, as shown in Figures 3, a steel box girder integral jacking device includes a support frame 101. At the upper end of the support frame 101, there is a support plate 102. At the upper end of the support plate 102, there are several jacking mechanisms. The upper ends of the jacking mechanisms are connected to a mounting plate 103. In the middle of the upper end of the mounting plate 103, there is a propulsion mechanism. At both ends of the mounting plate 103, there are limiting components for limiting the beam body. The propulsion mechanism includes chutes symmetrically opened at the upper end of the mounting plate 103. Inside the chutes, there are sliders 104 slidably connected. At the upper ends of the sliders 104, there are placement platforms 105 for placing the beam body. On the placement platforms 105, there are evenly arranged reserved bolt fixing holes 109. The beam body is firmly connected to the placement platforms 105 through bolts, enhancing the stability of the beam body during the jacking process, reducing displacement caused by vibration or external forces, and ensuring that the beam body remains stable during jacking. Between the two sliders 104, there is a fixing plate 106. At the right end of the mounting plate 103, there are several pushing oil cylinders 107. The output ends of the pushing oil cylinders 107 are all connected to the fixing plate 106.

[0024] As Figure 1 , 2 , as shown in Figures 3, the limiting components include grooves 201 provided at the front and rear ends of the mounting plate 103. In the middle of the grooves 201, there are screw rods 202 rotatably connected. Inside the grooves 201, there are moving plates 203 threadedly connected to the screw rods 202 and slidably connected. At the front and rear ends of the mounting plate 103, there are motors 204 fixedly connected. The output ends of the motors 204 are connected to the screw rods 202 through couplings. On the upper ends of the moving plates 203, there are several limiting members evenly arranged. The limiting members include mounting frames 205 provided on the upper ends of the moving plates 203. At the bottom of the mounting frames 205, there are telescopic push rods 206. The upper ends of the telescopic push rods 206 are connected to limiting plates 207. The limiting plates 207 are slidably connected to the mounting frames 205. Starting the motors 204 can make the screw rods 202 rotate. The rotation of the screw rods 202 drives the moving plates 203 to move back and forth along the grooves 201, thereby adjusting the distance between the limiting plates 207 according to the width of the beam body. Then, starting the telescopic push rods 206 drives the limiting plates 207 to move up and down along the mounting frames 205 to adjust the height of the limiting plates 207 according to the height of the beam body, and thus the beam body can be limited. The limiting components can ensure that the beam body remains stable during the jacking process, avoid the offset or swing of the beam body caused by external forces, and reduce the risk of structural instability.

[0025] As Figure 1 , 2 , as shown in Figures 3, inside the grooves 201, there are slide rods 208 for assisting the movement of the moving plates 203. The slide rods 208 are slidably connected to the moving plates 203. The provided slide rods 208 can support the moving plates 203 and improve the stability of the moving plates 203.

[0026] As Figure 1 ,4 As shown, the pushing mechanism includes jacking cylinders 108 evenly arranged at the upper end of the support plate 102. The output ends of the jacking cylinders 108 are fixedly connected to the bottom of the mounting plate 103. By evenly distributing multiple jacking cylinders 108 at the bottom of the entire mounting plate, the weight can be effectively shared, local overloading can be prevented, and the safety and stability of the structure can be ensured.

[0027] During use, the staff uses a lifting tool to place an object on the placement platform 105. Starting the jacking cylinders 108 can jack up the mounting plate 103. The beam moves upward with the mounting plate 103. Then, starting the pushing cylinder 107, the pushing cylinder 107 can push the fixed plate 106 to move. The fixed plate 106 drives the slider 104 to move along the chute, and further enables the slider 104 to drive the placement platform 105 to move. The beam moves with the placement platform 105, thereby pushing the beam. During the pushing process, starting the motor 204 can make the screw 202 rotate. The rotation of the screw 202 drives the moving plate 203 to move back and forth along the groove 201, and further adjusts the distance between the limiting plates 207 according to the width of the beam. Then, starting the telescopic push rod 206 drives the limiting plates 207 to move up and down along the mounting frame 205 to adjust the height of the limiting plates 207 according to the height of the beam, and thus the beam can be limited. This can ensure the precise control of the horizontal and vertical positions of the beam during the pushing process, avoid the offset or swing of the beam caused by external forces, reduce the risk of structural instability, and improve the construction accuracy and project quality.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Any other modifications or equivalent replacements made by those of ordinary skill in the art to the technical solutions of the present invention shall be covered by the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solutions of the present invention.

Claims

1. A steel box girder integral pushing device, comprising a support frame (101), wherein a support plate (102) is provided at the upper end of the support frame (101), characterized in that: The upper end of the support plate (102) is provided with a plurality of pushing mechanisms, the upper end of the pushing mechanisms is connected to a mounting plate (103), a pushing mechanism is provided in the middle of the upper end of the mounting plate (103), and limiting components for limiting the beam body are provided at both ends of the mounting plate (103), the limiting components comprising grooves (201) provided at the front and rear ends of the mounting plate (103), the middle of the grooves (201) are rotatably connected to a screw rod (202), the interior of the grooves (201) are slidably connected to a moving plate (203) threadedly connected to the screw rod (202), the front and rear ends of the mounting plate (103) are fixedly connected to a motor (204), the output end of the motor (204) is connected to the screw rod (202) via a coupling, and the upper end of the moving plate (203) is evenly provided with a plurality of limiting members.

2. The steel box girder integral pushing device according to claim 1, characterized in that: The propulsion mechanism comprises a slide groove symmetrically arranged on the upper end of the mounting plate (103), the interior of the slide groove is slidably connected with a slider (104), the upper end of the slider (104) is provided with a placement platform (105) for placing the beam body, a fixing plate (106) is connected between the two sliders (104), and a plurality of pushing oil cylinders (107) are provided at the right end of the mounting plate (103), and the output ends of the pushing oil cylinders (107) are connected to the fixing plate (106).

3. The integral jacking device for a steel box girder according to claim 1, characterized in that: The limiting member comprises a mounting frame (205) arranged at the upper end of the movable plate (203); a telescopic push rod (206) is arranged at the bottom of the mounting frame (205); the upper end of the telescopic push rod (206) is connected to a limiting plate (207); and the limiting plate (207) is slidably connected to the mounting frame (205).

4. The integral jacking device for a steel box girder according to claim 1, characterized in that: The grooves (201) are provided with sliding rods (208) for assisting the movement of the moving plate (203), and the sliding rods (208) are slidably connected to the moving plate (203).

5. The integral jacking device for a steel box girder according to claim 1, characterized in that: The jacking mechanism comprises jacking cylinders (108) uniformly arranged on the upper end of the support plate (102), and the output ends of the jacking cylinders (108) are fixedly connected to the bottom of the mounting plate (103).

6. The integral jacking device for a steel box beam according to claim 2, characterized in that: The placement platform (105) is evenly provided with reserved bolt fixing holes (109).

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