A positioning and fastening device for transporting steel box girders

Abstract

This utility model discloses a positioning and fastening device for transporting steel box girders, relating to the technical field of positioning and fastening devices. The device includes a support platform with four extended supports integrally formed on its outer wall. Each of the four extended supports has an inner guide groove, and a screw-slider is movably mounted inside the inner guide groove. Support feet are integrally formed at the bottom of each of the four extended supports. The device also includes a top beam frame positioned above the support platform, with a lifting screw threaded through a central screw hole inside the top beam frame. A lower pressure plate is integrally formed at the lower end of the lifting screw. This invention solves the problem that existing positioning and fastening mechanisms, which use a clamp-type structure to position and fasten steel box girders, are inconvenient to assemble and adjust, and lack effective lifting and transport auxiliary mechanisms, leading to inconvenience in transporting steel box girders.

Description

Technical Field

[0001] This utility model relates to the technical field of positioning and fastening devices, specifically a positioning and fastening device for transporting steel box girders. Background Technology

[0002] Steel box girders, also known as steel plate box girders, are a common structural form for long-span bridges. They are generally used on bridges with large spans and are called steel box girders because their shape resembles a box. During the hoisting and transportation of steel box girders, positioning and fastening mechanisms are needed for limiting and supporting them.

[0003] For example, announcement number CN221293681U (titled "Positioning and Fastening Device for Steel Box Girder Transportation") includes a vehicle platform. An movable groove is formed on the inner side of the vehicle platform. A dual-output shaft motor is fixedly connected to the inner side of the movable groove. Rotating rods are fixedly connected to both sides of the dual-output shaft motor. A first bevel gear is fixedly connected to the side of the rotating rod away from the dual-output shaft motor. A second bevel gear meshes with the front side of the first bevel gear. A first threaded stud is movably connected to the inner side of a first clamping plate. A second clamping plate is threaded to the outer side of the first threaded stud. A second threaded stud is movably connected to the inner side of the first clamping plate. The outer threaded connection has a third clamping plate. By setting lifting studs, the first clamping plate can be pressed down, thereby cooperating with the vehicle platform to fix the upper and lower sides of the steel box girder, improving the stability of the device during transportation. By setting first positive and negative threaded studs, the second clamping plate can be brought closer together, allowing the second clamping plate to further fix the front and rear sides of the steel box girder, further improving the stability of the device during transportation. By setting second positive and negative threaded studs, the third clamping plate can be brought closer together, thereby cooperating to fix the left and right sides of the steel box girder, further improving the stability of the device during transportation. This solves the problem that existing steel box girders are prone to shaking and damage during transportation.

[0004] The aforementioned positioning and fastening mechanism uses a clamp-type structure to position and fasten the steel box girder. However, the overall structure is inconvenient to assemble and adjust, and lacks an effective lifting and transportation auxiliary mechanism, resulting in inconvenience in transporting the steel box girder. Therefore, we provide a positioning and fastening device for transporting steel box girders. Utility Model Content

[0005] The purpose of this utility model is to provide a positioning and fastening device for transporting steel box girders, so as to solve the problem mentioned in the background art that the existing positioning and fastening mechanism uses a clamp-type structure to position and fasten the steel box girder, but the overall structure is inconvenient to assemble and adjust, and lacks an effective lifting and transportation auxiliary mechanism, which makes the transportation of steel box girders inconvenient.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a positioning and fastening device for transporting steel box girders, comprising a device support platform, four extended supports integrally formed on the outer wall of the device support platform, an inner guide groove provided inside each of the four extended supports, a screw slider movably arranged inside the inner guide groove, and a support foot integrally formed at the bottom of each of the four extended supports.

[0007] Also includes:

[0008] The top beam frame is positioned above the support platform of the device, and a lifting screw is installed in the central screw hole inside the top beam frame. A lower pressure plate is integrally formed at the lower end of the lifting screw.

[0009] A vertical baffle is integrally formed and set at the upper end of the lead screw slider, and a movable slide groove is provided at the connection position between the vertical baffle and the top beam frame. The four movable slide grooves and the top beam frame are an integral structure.

[0010] The connecting seat is located on one side of the vertical baffle. The connecting seat and the lead screw slider are integrally formed. The connecting seat is hooked with a hook end. A traction steel cable is integrally formed on the hook end. One end of the four traction steel cables is integrally formed with a hook seat.

[0011] Preferably, the inner guide groove is provided with a threaded screw, and the screw slider is connected to the extension bracket for guidance and movement through the threaded screw. One end of the extension bracket is provided with a transmission wheel, and the transmission wheel is connected to the threaded screw for transmission through a coupling.

[0012] Preferably, the lead screw is provided with balance guide rods on both sides, and the two ends of the two balance guide rods are welded to the inner guide groove. The lead screw slider is guided and moved in a movable manner to the inner guide groove through the two balance guide rods.

[0013] Preferably, two mounting rods are welded to the outer wall of one end of the extension bracket, and a connecting block is welded to the upper end of the mounting rod. Assembly holes are provided on the outer walls of all four ends of the top beam frame.

[0014] Preferably, fastening bolts are installed in the internal screw holes of the assembly connection hole and the connecting block, and the connecting block is fixedly connected to the top beam frame by the fastening bolts.

[0015] Preferably, the vertical baffle has a rope threading hole inside, through which the traction steel cable is threaded and connected to the vertical baffle.

[0016] Preferably, the upper end of the lifting screw is provided with a handle, and the handle and the lifting screw are an integral structure.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] This invention involves installing the top beam frame directly above the device support platform and securing it with fastening bolts. Then, rotating the throttle drives the lifting screw to move up and down, causing the lower pressure plate to press against the top of the steel box girder. Finally, the four traction cables on the hook seat are hooked to the connecting seats on the screw slider. During hoisting and transportation, the crane only needs to connect to the hook seat to stably hoist and transport the steel box girder. Assembly is simple, and it can assist in the stable hoisting and transportation of steel box girders of various sizes. It overcomes the problem that existing positioning and fastening mechanisms, which use a clamp-type structure to position and fasten the steel box girder, are inconvenient to assemble and adjust, and lack effective hoisting and transportation auxiliary mechanisms, leading to inconvenience in transporting steel box girders. Attached Figure Description

[0019] Figure 1 This is a front view of the positioning and fastening device for transporting steel box girders according to this utility model.

[0020] Figure 2 This is a top view of the positioning and fastening device for transporting steel box girders according to this utility model;

[0021] Figure 3 This is a sectional view of the connection structure between the connecting block and the top beam frame of this utility model;

[0022] Figure 4 This is an enlarged schematic diagram of part A of the present invention;

[0023] In the diagram: 1. Device support platform; 2. Extension bracket; 3. Inner guide groove; 4. Threaded screw; 5. Transmission wheel; 6. Top beam frame; 7. Movable slide; 8. Erection connecting rod; 9. Connecting block; 10. Vertical baffle; 11. Rope threading hole; 12. Traction steel cable; 13. Hook seat; 14. Lifting screw; 15. Lower pressure plate; 16. Turning handle; 17. Support foot; 18. Assembly connection hole; 19. Fastening bolt; 20. Screw slider; 21. Balance guide rod; 22. Connecting seat; 23. Hook cable end. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] Please see Figure 1-4 An embodiment of this utility model is provided: a positioning and fastening device for transporting steel box girders, including a device support platform 1, four extension brackets 2 integrally formed on the outer wall of the device support platform 1, an inner guide groove 3 is provided inside the four extension brackets 2, a screw slider 20 is movably arranged inside the inner guide groove 3, and a support foot 17 is integrally formed at the bottom of the four extension brackets 2.

[0026] Also includes:

[0027] The top beam frame 6 is positioned above the device support platform 1, and a lifting screw 14 is installed in the central screw hole inside the top beam frame 6. A lower pressure plate 15 is integrally formed at the lower end of the lifting screw 14.

[0028] The vertical baffle 10 is integrally formed and set at the upper end of the lead screw slider 20. The vertical baffle 10 and the top beam frame 6 are provided with movable slide grooves 7 at the connection position. The four movable slide grooves 7 and the top beam frame 6 are an integral structure.

[0029] The connecting seat 22 is located on one side of the vertical baffle 10. The connecting seat 22 and the lead screw slider 20 are integrally formed. The connecting seat 22 is hooked with a hook end 23. The hook end 23 is integrally formed with a traction steel cable 12. One end of the four traction steel cables 12 is integrally formed with a hook seat 13.

[0030] In use, the steel box girder to be hoisted and transported is placed on the device platform 1. Then, the four transmission wheels 5 are rotated so that the four vertical baffles 10 abut against the outer walls of the steel box girder for limiting support. After that, the top beam frame 6 is installed directly above the device platform 1 and fixed with the fastening bolts 19. Then, the throttle 16 is rotated to drive the lifting screw 14 to move up and down, so that the lower pressure plate 15 abuts and presses against the top of the steel box girder. Finally, the four traction steel cables 12 on the hook seat 13 are hooked to the connecting seats 22 on the screw slider 20. During hoisting and transport, the crane only needs to connect to the hook seat 13 to drive the steel box girder for stable hoisting and transport.

[0031] Please see Figure 4 The inner guide groove 3 is equipped with a threaded screw 4. The screw slider 20 is connected to the extension bracket 2 via the threaded screw 4. One end of the extension bracket 2 is equipped with a transmission wheel 5, which is connected to the threaded screw 4 via a coupling. The threaded screw 4 inside the inner guide groove 3 serves to guide the screw slider 20 along the extension bracket 2. Please refer to [link to relevant documentation]. Figure 4 The lead screw 4 has balance guide rods 21 on both sides, and both ends of the balance guide rods 21 are welded to the inner guide groove 3. The lead screw slider 20 is guided and movably connected to the inner guide groove 3 through the two balance guide rods 21. The balance guide rods 21 on both sides of the lead screw 4 serve to facilitate the guided and movable connection between the lead screw slider 20 and the inner guide groove 3. Please refer to [link / reference]. Figure 3Two supporting rods 8 are welded to the outer wall of one end of the extension bracket 2. A connecting block 9 is welded to the upper end of the supporting rod 8. Assembly holes 18 are provided on the outer walls of all four ends of the top beam frame 6. The two supporting rods 8 welded to the outer wall of one end of the extension bracket 2 serve to support and connect the extension bracket 2 and the top beam frame 6. Please refer to [link / reference]. Figure 3 Fastening bolts 19 are installed in the internal screw holes of the assembly joint hole 18 and the connecting block 9. The connecting block 9 is fixedly connected to the top beam frame 6 by the fastening bolts 19. The fastening bolts 19 installed in the internal screw holes of the assembly joint hole 18 and the connecting block 9 serve to fix the top beam frame 6 and the connecting block 9 to each other. Please refer to [link to relevant documentation]. Figure 1 The vertical baffle 10 has a rope-threading hole 11 inside. The traction cable 12 is connected to the vertical baffle 10 through the rope-threading hole 11. The rope-threading hole 11 inside the vertical baffle 10 facilitates the threading of the traction cable 12. Please refer to [link / reference]. Figure 1 The upper end of the lifting screw 14 is provided with a handle 16, which is an integral part of the lifting screw 14. The handle 16 at the upper end of the lifting screw 14 facilitates turning the lifting screw 14 to rotate in both directions.

[0032] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A positioning and fastening device for transporting steel box girders, comprising a device support platform (1), four extension brackets (2) integrally formed on the outer wall of the device support platform (1), an inner guide groove (3) is provided inside the four extension brackets (2), a screw slider (20) is movably arranged inside the inner guide groove (3), and a support foot (17) integrally formed at the bottom position of the four extension brackets (2). Its features are: Also includes: The top beam frame (6) is positioned above the device support platform (1), and a lifting screw (14) is installed in the central screw hole inside the top beam frame (6). A lower pressure plate (15) is integrally formed at the lower end of the lifting screw (14). The vertical baffle (10) is integrally formed and set at the upper end of the lead screw slider (20), and the vertical baffle (10) and the top beam frame (6) are provided with movable slide grooves (7), and the four movable slide grooves (7) and the top beam frame (6) are an integral structure. The connecting seat (22) is located on one side of the vertical baffle (10). The connecting seat (22) and the lead screw slider (20) are an integral structure. The connecting seat (22) is hooked with a hook end (23). The hook end (23) is integrally formed with a traction steel cable (12). One end of each of the four traction steel cables (12) is integrally formed with a hook seat (13).

2. The positioning and fastening device for transporting steel box girders according to claim 1, characterized in that: The inner guide groove (3) is provided with a threaded screw (4), and the screw slider (20) is connected to the extension bracket (2) through the threaded screw (4). One end of the extension bracket (2) is provided with a transmission wheel (5), and the transmission wheel (5) is connected to the threaded screw (4) through a coupling.

3. The positioning and fastening device for transporting steel box girders according to claim 2, characterized in that: The threaded screw (4) is provided with balance guide rods (21) on both sides. Both ends of the two balance guide rods (21) are welded to the inner guide groove (3). The screw slider (20) is guided and connected to the inner guide groove (3) through the two balance guide rods (21).

4. The positioning and fastening device for transporting steel box girders according to claim 1, characterized in that: Two mounting rods (8) are welded to the outer wall of one end of the extension bracket (2), and a connecting block (9) is welded to the upper end of the mounting rod (8). Assembly holes (18) are provided on the outer walls of the four ends of the top beam frame (6).

5. A positioning and fastening device for transporting steel box girders according to claim 4, characterized in that: Fastening bolts (19) are installed in the internal screw holes of the assembly connection hole (18) and the connecting block (9), and the connecting block (9) is fixedly connected to the top beam frame (6) by the fastening bolts (19).

6. The positioning and fastening device for transporting steel box girders according to claim 1, characterized in that: The vertical baffle (10) has a rope hole (11) inside, and the traction steel cable (12) is connected to the vertical baffle (10) through the rope hole (11).

7. A positioning and fastening device for transporting steel box girders according to claim 1, characterized in that: The upper end of the lifting screw (14) is provided with a throttle (16), and the throttle (16) and the lifting screw (14) are an integral structure.

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