Hoisting auxiliary device for box girder transportation

Abstract

The application relates to the technical field of box girder hoisting equipment, in particular to a hoisting auxiliary device for box girder transportation. The box girder is connected and fixed through a first mounting plate. When the box girder is subjected to eccentric load, the first connecting plate is deflected, at which time the rolling balls in the arc-shaped pipeline roll, at which time the position sensor controls the first hydraulic cylinder on the corresponding side to start through a control system, drives the first sliding frame on the corresponding side to slide to a position close to the middle of the first connecting plate, so that the force on the left side of the first connecting plate is reduced, the rolling balls can return to the middle position of the arc-shaped pipeline, at which time the forces on the left and right sides of the first connecting plate are equal, the box girder can be leveled, the stability of the box girder during hoisting and moving is facilitated, the hoisting mechanism is protected, and the hoisting auxiliary device has a wide application prospect in the technical field of box girder hoisting equipment.

Description

Technical Field

[0001] This invention relates to the field of box girder hoisting equipment technology, and in particular to a hoisting auxiliary device for transporting box girders. Background Technology

[0002] A box girder is a bridge structure commonly used in railway, highway, or municipal engineering bridge construction. The structural feature of a box girder is that it is supported by steel beams on both sides, forming a box-like structure through which trains, cars, and other vehicles can pass. Box girders reduce the impact of bridges on roads while also improving the stability and durability of bridges. Box girders are generally manufactured in factories and then transported by trucks, trains, ships, etc. The internal components of a box girder serve different functions, and their internal structure is not always perfectly symmetrical.

[0003] Due to the large weight and volume of box girders, special transportation equipment and hoisting tools are required during transportation to facilitate installation and other processes. Current box girder hoisting mechanisms have the following problems:

[0004] 1. Most current hoisting mechanisms bind the box girder with ropes and then pull it with ropes, or fix the box girder with a hanger. However, the above methods are not convenient for fixing the center of gravity of the box girder, nor for leveling the lifting equipment and the box girder. This can cause the box girder to sway easily to one side during hoisting, or the unbalanced side can exert a large pulling force on the hanger, damaging the hoisting equipment. In severe cases, it may cause the box girder to fall.

[0005] 2. Due to the large weight and volume of the box girder, securing it with simple ropes or hangers presents a safety issue and lacks safety protection in case of accidents.

[0006] Therefore, there is an urgent need for a hoisting auxiliary device for transporting box girders to solve the problems mentioned in the background technology. Summary of the Invention

[0007] To address the problems mentioned above in the background technology, a hoisting auxiliary device for transporting box girders is invented.

[0008] The technical solution of the present invention includes a first fixed plate, wherein a first connecting plate is provided above the first fixed plate, a first sliding groove in the left-right direction is provided on the first connecting plate, a slidable first sliding column is provided in the first sliding groove, slidable first sliding frames are respectively provided on the left and right sides of the first fixed plate, the first sliding column is rotatably connected to the first sliding frame, a first hydraulic cylinder is respectively provided on the left and right sides of the first connecting plate, the output end of the first hydraulic cylinder is fixedly connected to the first sliding frame on its corresponding side, a first lifting frame is hinged to the middle of the first connecting plate, a second fixed plate is provided on the outer side of the first fixed plate, a swingable second hinge rod is respectively hinged to the four corners of the second fixed plate, a second sliding frame that can slide up and down is provided on the second fixed plate, a slidable second sliding block is provided in the second sliding frame, and the second hinge rod is hinged to the second sliding block.

[0009] Preferably, the middle part of the first connecting plate is provided with a fixed cylinder with vertical axial direction, the fixed cylinder is provided with a first compression spring with vertical axial direction, the top of the first compression spring is provided with a first sliding block, the upper end of the fixed cylinder is provided with an arc-shaped pipe, the arc-shaped pipe is provided with a ball, the upper end of the first sliding block is inserted into the arc-shaped pipe, and the upper end of the first sliding block is opened into an arc-shaped surface with the arc of the first sliding block being equal to the arc of the arc-shaped pipe.

[0010] Preferably, a position sensor for monitoring the position of the rolling ball is provided inside the arc-shaped pipe, and the first hydraulic cylinder on the corresponding side is activated when the rolling ball moves to the left or right side of the arc-shaped pipe.

[0011] Preferably, an exhaust valve is provided on the lower side of the fixed cylinder, and an intake valve is provided on the lower side of the fixed cylinder, wherein the intake speed of the intake valve is greater than the exhaust speed of the exhaust valve.

[0012] Preferably, a plurality of mounting blocks are provided on the left and right sides of the first fixing plate.

[0013] Preferably, a second hydraulic cylinder is provided in the middle of the first lifting frame, a second connecting frame is provided at the output end of the second hydraulic cylinder, and the second sliding frame is fixedly connected to the second connecting frame.

[0014] Preferably, a pressure switch for controlling the start and stop of the second hydraulic cylinder is provided at the bottom of the fixed cylinder, and a trigger block that cooperates with the pressure switch is provided at the lower end of the first sliding block.

[0015] Preferably, a guide block is provided at the lower end of the second hinge rod, and a slidable sliding block is provided on the guide block. A friction part is provided on the side of the guide block near the box girder, and the guide block can fit against the side of the box girder through the friction part.

[0016] Preferably, a second compression spring is provided between the sliding block and the guide block, a guide post is provided on the sliding block, and a guide hole is provided on the guide block, the guide post being able to slide within the guide hole.

[0017] Preferably, the first lifting frame is provided with a mounting base, and the mounting base has a plurality of mounting holes.

[0018] The technical solution of this invention can achieve the following beneficial effects:

[0019] (1) Set a first sliding frame, a first mounting plate and a first connecting plate. The box beam is connected and fixed by the first mounting plate. When the box beam is eccentrically loaded, the first connecting plate deflects. At this time, the ball in the arc pipe rolls. At this time, the position sensor controls the first hydraulic cylinder on its corresponding side to start through the control system, which drives the first sliding frame on its corresponding side to slide towards the middle of the first connecting plate, so that the force on the left side of the first connecting plate is reduced and the ball can return to the middle position of the arc pipe. At this time, the force on the left and right sides of the first connecting plate is equal, which is conducive to leveling the box beam and facilitating its stability during hoisting and movement. It is also conducive to protecting the hoisting mechanism.

[0020] (2) Set a second fixed plate, a second hinge rod, a second connecting frame, a guide block, and a sliding block. By starting the second hydraulic cylinder, the second connecting frame is moved. The second connecting frame causes the second hinge rod to move closer to the side of the box beam, thereby causing the sliding block to fit against the side of the box beam. At this time, the box beam can be clamped, which is beneficial to provide double protection for the box beam and prevent the box beam from falling off in case of an accident.

[0021] The technical solution of this invention has broad application prospects in the field of box girder hoisting equipment technology. Attached Figure Description

[0022] Figure 1 This is an isometric view of the present invention.

[0023] Figure 2 This is the left-side axonometric view of the present invention.

[0024] Figure 3 This is the front view of the present invention.

[0025] Figure 4 This is a top view of the present invention.

[0026] Figure 5 This is a front sectional view of the present invention.

[0027] Figure 6 This is a front sectional view of the present invention.

[0028] Figure 7 This is a bottom view of the present invention.

[0029] Figure 8 For the present invention Figure 5 A magnified view of A in the middle.

[0030] The components are as follows: 1. First fixed plate; 2. First connecting plate; 3. First sliding groove; 4. First sliding column; 5. First sliding frame; 6. First hydraulic cylinder; 7. First lifting frame; 8. Second fixed plate; 9. Second hinge rod; 10. Second sliding frame; 11. Second sliding block; 12. Fixed cylinder; 13. First compression spring; 14. First sliding block; 15. Arc-shaped pipe; 16. Ball bearing; 17. Position sensor; 18. Exhaust valve; 19. Intake valve; 20. Mounting block; 21. Second hydraulic cylinder; 22. Second connecting frame; 23. Touch switch; 24. Trigger block; 25. Guide block; 26. Sliding block; 27. Second compression spring; 28. Guide column; 29. ​​Mounting base. Detailed Implementation

[0031] The technical solutions of various embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0032] Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0033] like Figures 1-8The box girder transport hoisting auxiliary device shown includes a first fixed plate 1. In one specific embodiment, the first fixed plate 1 is configured in a left-right direction for connecting the box girder during hoisting. A first connecting plate 2 is installed above the first fixed plate 1. The first connecting plate 2 is configured in a left-right direction and its length is slightly greater than the length of the first fixed plate 1. A first sliding groove 3 is formed on the first connecting plate 2, extending in a left-right direction and running through the front and back. A movable first sliding column 4 is movably connected within the first sliding groove 3. The diameter of the first sliding column 4 is the same as the width of the first sliding groove 3, improving the stability of the first sliding column 4 when moving within the first sliding groove 3. Sliding first sliding frames 5 are slidably connected to the left and right sides of the fixed plate 1, and the two first sliding frames 5 are symmetrically distributed about the first fixed plate 1. The first sliding column 4 is rotatably connected to the first sliding frame 5. The sliding of the first sliding frame 5 changes the force on the first connecting plate 2 (the force is equal to the product of the torque and the lever arm). The first hydraulic cylinder 6 is fixedly connected to the left and right sides of the first connecting plate 2, and the two first hydraulic cylinder 6 are symmetrically distributed about the first connecting plate 2. The output end of the first hydraulic cylinder 6 is fixedly connected to the first sliding frame 5 on its corresponding side. The first sliding frame 5 is driven to slide by the first hydraulic cylinder 6.

[0034] like Figures 1-8 In one specific embodiment of the box girder transport hoisting auxiliary device shown, a first lifting frame 7 is hinged to the middle of the first connecting plate 2. The first lifting frame 7 is used to lift the device. A second fixing plate 8 is provided on the outer side of the first fixing plate 1. The four corners of the second fixing plate 8 are respectively hinged to swingable second hinge rods 9. A second sliding frame 10 that can slide up and down is slidably connected to the second fixing plate 8. A second sliding block 11 that can slide left and right is slidably connected inside the second sliding frame 10. The second hinge rods 9 and the second sliding block 11 are hinged to each other. The upper end of the second sliding frame 10 is fixedly connected to the second connecting frame 22. The middle of the first lifting frame 7 is fixedly connected to... A second hydraulic cylinder 21 with a vertical direction is provided. The output end of the second hydraulic cylinder 21 is fixedly connected to a second connecting frame 22. The second connecting frame 22 is slidably connected to the first lifting frame 7. The second sliding frame 10 is fixedly connected to the second connecting frame 22. In this embodiment, when the second connecting frame 22 moves up and down, it drives the second sliding frame 10 to move. The second sliding frame 10 drives the second sliding block 11 to move. At the same time, the second sliding block 11 drives the second hinge rod 9 to swing, so that the second hinge rod 9 moves closer to the side of the box girder, which facilitates the clamping of the box girder and helps to provide double protection for the box girder, preventing the box girder from falling off in case of accidents.

[0035] like Figures 1-8In one specific embodiment of the lifting auxiliary device for transporting box girders shown, a fixed cylinder 12 with vertical axial direction is fixedly connected to the middle of the first connecting plate 2. A first compression spring 13 with vertical axial direction is fixedly connected inside the fixed cylinder 12. A first sliding block 14 is fixedly connected to the top of the first compression spring 13. An arc-shaped pipe 15 is fixedly connected to the upper end of the fixed cylinder 12. A ball 16 is movably connected inside the arc-shaped pipe 15. The upper end of the first sliding block 14 is inserted into the arc-shaped pipe 15. The upper end of the first sliding block 14 is opened into an arc-shaped surface and its curvature is equal to that of the arc-shaped pipe 15. In this embodiment, when the first connecting plate 2 tilts, it causes the fixed cylinder 12 to tilt, which in turn causes the arc-shaped pipe 15 to tilt, and the ball 16 inside the arc-shaped pipe 15 rolls. In another specific embodiment, the arc-shaped pipe 15 can be made transparent to facilitate observation of the rolling position of the ball 16.

[0036] like Figures 1-8 In one specific embodiment of the lifting auxiliary device for transporting box girders shown, a position sensor 17 for monitoring the position of the rolling ball 16 is fixedly connected inside the arc-shaped pipe 15. The position sensor 17 is located on the upper side inside the arc-shaped pipe 15 to monitor the position of the rolling ball 16 and send the data to the control system. The control system includes a program for controlling the first hydraulic cylinder 6 and the second hydraulic cylinder 21. This is a common prior art used by those skilled in the art and will not be described in detail here. When the rolling ball 16 moves to the left or right side of the arc-shaped pipe 15, the control system controls the first hydraulic cylinder 6 on the corresponding side to start. The first hydraulic cylinder 6 drives the first sliding frame 5 to slide, thereby causing the force on the first connecting plate 2 to change.

[0037] like Figures 1-8 In one specific embodiment of the lifting auxiliary device for transporting box girders shown, an exhaust valve 18 and an intake valve 19 are provided on the lower side of the fixed cylinder 12. The intake speed of the intake valve 19 is greater than the exhaust speed of the exhaust valve 18. A touch switch 23 that controls the start and stop of the second hydraulic cylinder 21 is fixedly connected to the bottom of the fixed cylinder 12. A trigger block 24 that cooperates with the touch switch 23 is fixedly connected to the lower end of the first sliding block 14. When the touch switch 23 contacts the trigger block 24, it drives the second hydraulic cylinder 21 to start. At this time, the second hydraulic cylinder 21 can drive the second connecting frame 22 to move up and down. The inside of the fixed cylinder 12 is sealed. When the ball 16 rolls to the upper end of the first sliding block 14, the ball drives the first sliding block 14 to slide downward. At this time, the gas is depressurized through the exhaust valve 18. The first sliding block 14 drives the trigger block 24 to move slowly downward, so that the ball 16 can move in a stable state. When the ball 16 passes the first sliding block 14, the ball causes the first sliding block 14 to move downward briefly. Under the action of the first compression spring 13 and the intake valve 19, the first sliding block 14 quickly returns to its initial state.

[0038] like Figures 1-8 In one specific embodiment of the box girder transport hoisting auxiliary device shown, three mounting blocks 20 are fixedly connected to the left and right sides of the first fixed plate 1, respectively. The mounting blocks 20 facilitate the connection and hoisting of the box girder. A mounting seat 29 is fixedly connected to the first lifting frame 7. The mounting seat 29 has multiple mounting holes, through which the mounting seat 29 is connected to the lifting device.

[0039] like Figures 1-8 In one specific embodiment of the lifting auxiliary device for transporting box girders shown, a guide block 25 is fixedly connected to the lower end of the second hinge rod 9. A slidable sliding block 26 is slidably connected to the guide block 25. A friction part is provided on the side of the guide block 25 near the box girder, allowing the guide block 25 to fit against the side of the box girder through the friction part. A second compression spring 27 is fixedly connected between the sliding block 26 and the guide block 25. A guide post 28 is fixedly connected to the sliding block 26. A guide hole is provided on the guide block 25, allowing the guide post 28 to slide within the guide hole, facilitating the clamping of the side of the box girder.

[0040] The working principle of this device is as follows: When in use, the mounting block 20 is first connected to the top of the box girder. The first lifting frame 7 is then lifted using a lifting device. When the box girder experiences eccentric loading, the first fixed plate 1 deflects, causing the first connecting plate 2 to deflect. The first connecting plate 2 then causes the fixed cylinder 12 to deflect, which in turn causes the arc-shaped pipe 15 to deflect. At this time, the position sensor 17 monitors the position of the ball 16 and controls the first hydraulic cylinder 6 to start. The first hydraulic cylinder 6 causes the first sliding frame 5 to slide. Through the sliding of the first sliding frame 5, the first connecting plate 2... As the force changes, the ball 16 returns to the middle of the arc-shaped pipe 15. The ball 16 drives the sliding block 26 to move downward. The sliding block 26 drives the trigger block 24 to contact the touch switch 23 and activate the second hydraulic cylinder 21. The second hydraulic cylinder 21 drives the second connecting frame 22 to move. When the second connecting frame 22 moves, it drives the second sliding frame 10 to move. The second sliding frame 10 drives the second sliding block 11 to move. At the same time, the second sliding block 11 drives the second hinge rod 9 to swing, so that the second hinge rod 9 moves closer to the side of the box girder, thereby clamping the box girder and achieving double protection for the box girder.

[0041] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A hoisting auxiliary device for transporting box girders, comprising a first fixing plate (1), characterized in that, A first connecting plate (2) is provided above the first fixed plate (1). A first sliding groove (3) in the left and right direction is provided on the first connecting plate (2). A first sliding column (4) that can slide is provided in the first sliding groove (3). A first sliding frame (5) that can slide is provided on the left and right sides of the first fixed plate (1). The first sliding column (4) and the first sliding frame (5) are rotatably connected. A first hydraulic cylinder (6) is provided on the left and right sides of the first connecting plate (2). The output end of the first hydraulic cylinder (6) is fixedly connected to the first sliding frame (5) on its corresponding side. A first lifting frame (7) is hinged to the middle of the first connecting plate (2). A second fixed plate (8) is provided on the outside of the first fixed plate (1). A second hinge rod (9) that can swing is hinged to the four corners of the second fixed plate (8). A second sliding frame (10) that can slide up and down is provided on the second fixed plate (8). A second sliding block (11) that can slide is provided in the second sliding frame (10). The second hinge rod (9) and the second sliding block (11) are hinged together. The first connecting plate (2) is provided with a fixed cylinder (12) with vertical axis in the middle. The fixed cylinder (12) is provided with a first compression spring (13) with vertical axis in the middle. The top of the first compression spring (13) is provided with a first sliding block (14). The upper end of the fixed cylinder (12) is provided with an arc-shaped pipe (15). The arc-shaped pipe (15) is provided with a ball (16). The upper end of the first sliding block (14) is inserted into the arc-shaped pipe (15). The upper end of the first sliding block (14) is opened as an arc surface and its curvature is equal to that of the arc-shaped pipe (15). A position sensor (17) for monitoring the position of the ball (16) is provided inside the arc-shaped pipe (15). When the ball (16) moves to the left or right side of the arc-shaped pipe (15), the first hydraulic cylinder (6) on the corresponding side is activated. An exhaust valve (18) is provided on the lower side of the fixed cylinder (12), and an air inlet valve (19) is provided on the lower side of the fixed cylinder (12). The air inlet speed of the air inlet valve (19) is greater than the air outlet speed of the exhaust valve (18). Several mounting blocks (20) are respectively provided on the left and right sides of the first fixing plate (1); The first lifting frame (7) is provided with a second hydraulic cylinder (21) in the middle, and a second connecting frame (22) is provided at the output end of the second hydraulic cylinder (21). The second sliding frame (10) is fixedly connected to the second connecting frame (22). The bottom of the fixed cylinder (12) is provided with a touch switch (23) that can control the start and stop of the second hydraulic cylinder (21), and the lower end of the first sliding block (14) is provided with a trigger block (24) that cooperates with the touch switch (23). The lower end of the second hinge rod (9) is provided with a guide block (25), and a sliding block (26) is provided on the guide block (25). A friction part is provided on the side of the guide block (25) near the box beam, and the guide block (25) can fit against the side of the box beam through the friction part.

2. The lifting auxiliary device for transporting box girders according to claim 1, characterized in that, A second compression spring (27) is provided between the sliding block (26) and the guide block (25). A guide post (28) is provided on the sliding block (26), and a guide hole is provided on the guide block (25). The guide post (28) can slide within the guide hole.

3. The hoisting auxiliary device for transporting box girders according to claim 1, characterized in that, The first lifting frame (7) is provided with a mounting base (29), and the mounting base (29) has a plurality of mounting holes.

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