Span-adjustable beam lifter

Abstract

The utility model discloses a span-adjustable beam lifter, and relates to the technical field of beam lifters, in particular to a beam lifter which operates through a first driving motor, the first driving motor drives a roller to rotate through a first rotating shaft so as to drive a rope to rotate and lift an object, and operates through an electric push rod so as to drive a sliding plate and the roller to move. The device is simple in structure and convenient to adjust the span, lubricating oil in a box body can be guided to the surface of a frame through operation of a pump body, the frame can slide conveniently, the practicability of the device is improved, the device comprises two bottom plates, the tops of the two bottom plates are fixedly connected with connecting plates, and the opposite faces of the two connecting plates are fixedly connected with the same frame; the device comprises a frame, two sets of electric push rods are fixedly connected into the frame, the two sets of electric push rods are symmetrically installed, the other ends of the two sets of electric push rods are fixedly connected with sliding plates, the tops of the two sliding plates are fixedly connected with sliding frames, and the two sliding plates are slidably connected into the frame.

Description

Technical Field

[0001] This utility model relates to the field of beam lifting machine technology, specifically a beam lifting machine with adjustable span. Background Technology

[0002] A beam lifting machine is a type of gantry crane specifically designed for bridge construction. It mainly consists of a prefabricated main beam, outriggers, and overhead crane. The components are connected by pins and high-strength bolts, making it easy to assemble, disassemble, and transport. Compared with ordinary gantry cranes, it is convenient and quick to install, economical and practical, and suitable for road and bridge construction units that frequently move around.

[0003] However, current beam lifting machines can adjust the span. During frequent span adjustments, problems such as difficulty in sliding and high friction can easily occur, which reduces the practicality of the machine. In addition, most of them do not have a support function, which will cause displacement during operation, thus reducing the stability of the machine. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a span-adjustable beam lifting machine, which solves the problems mentioned in the background section.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model is implemented through the following technical solution: It includes two base plates, each with a connecting plate fixedly connected to its top. A frame is fixedly connected to the opposite surfaces of the two connecting plates. An electric push rod is fixedly connected within the frame. Two sets of electric push rods (13) are symmetrically installed, and there are two sets of electric push rods. A sliding plate is fixedly connected to the other end of each set of electric push rods. A sliding frame is fixedly connected to the top of each of the two sliding plates. The two sliding plates are slidably connected inside the frame. A second fixing plate is fixedly connected to the bottom of each of the two sets of sliding frames near both sides. A first bearing is fixedly connected to the opposite surfaces of the two second fixing plates. A first rotating shaft is rotatably connected within each of the two first bearings. A roller is fixedly connected to the opposite ends of the two first rotating shafts. A rope is fixedly wound around the surface of the roller. A first housing is fixedly connected to one side of the second fixing plate. A first drive motor is fixedly connected within the first housing. The other end of the output shaft of the first drive motor is fixedly connected to the other end of the first rotating shaft. The bottom of the base plate has a groove, and two second bearings are fixedly connected to the inner walls of the two grooves. A second shaft is rotatably connected to each of the two second bearings. A single bidirectional lead screw is fixedly connected to the opposite ends of the two second shafts. Threaded blocks are threaded onto the surface of the bidirectional lead screw, and there are two threaded blocks. A support plate is movably connected to the bottom of each of the two threaded blocks via a pin. A base is movably connected to the bottom of each support plate via a pin. Movable rods are movably connected to the bottom of both sets of base plates via pins. The other end of each movable rod is movably connected to the surface of the support plate via a pin. A second housing is fixedly connected to one side of each set of base plates. A second drive motor is fixedly connected to each of the two sets of second housings. The other end of the output shaft of each of the two sets of second drive motors is fixedly connected to the other end of each of the two sets of second shafts. A housing is fixedly connected to one side of each set of connecting plates. A conduit is fixedly connected to one side of each housing. The other end of each of the two sets of conduits is fixedly connected to one side of each set of sliding frames. A pump body is fixedly connected to the surface of each of the two sets of conduits.

[0008] Optionally, the inner walls of both grooves are provided with sliding grooves, and a slider is slidably connected in the sliding grooves. The slider is fixedly connected to one side of the threaded block.

[0009] Optionally, a reinforcing plate is fixedly connected to the top of both sets of base plates, and the other side of the reinforcing plate is fixedly connected to both sides of the connecting plate.

[0010] Optionally, a first fixing plate is fixedly connected to both sides of the two sets of base plates near the four corners, and a caster wheel is fixedly connected to the bottom of each of the first fixing plates.

[0011] Optionally, the top of the frame is provided with a through groove, and the sliding frame is slidably connected in the through groove.

[0012] Optionally, both sets of boxes have observation windows on their surfaces, and each observation window has a scale on its surface.

[0013] Optionally, the bottom of each base is provided with a soft pad, which is made of rubber.

[0014] This utility model provides a beam lifting machine with adjustable span, which has the following beneficial effects:

[0015] 1. This adjustable span beam lifting machine operates via a first drive motor, which drives the roller to rotate via a first rotating shaft, thereby driving the rope to rotate and lifting objects. An electric push rod operates to move the slide plate and roller, facilitating span adjustment. A pump operates to guide lubricating oil from the housing to the surface of the frame, facilitating frame sliding, reducing friction, improving adjustment efficiency, and enhancing the practicality of the device.

[0016] 2. This adjustable span beam lifting machine operates through a second drive motor, which drives a bidirectional lead screw to rotate via a second rotating shaft, thereby causing two threaded blocks to move in opposite directions. With the help of the pin and the movable rod, the support plate moves, thus supporting the device. Attached Figure Description

[0017] Figure 1 This is a frontal cross-sectional view of the present invention.

[0018] Figure 2 This is a side view of the structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the structural structure of this utility model from a bottom view.

[0020] Figure 4 This is a side view of the structure of this utility model;

[0021] Figure 5 for Figure 1 Enlarged structural diagram at point A in the middle;

[0022] Figure 6 for Figure 3 Enlarged structural diagram at point B.

[0023] In the diagram: 1. Base plate; 2. Reinforcing plate; 3. Connecting plate; 4. Box body; 5. Scale; 6. Observation window; 7. Conduit; 8. Pump body; 9. First fixing plate; 10. Caster wheel; 11. Frame; 12. Sliding frame; 13. Electric push rod; 14. Slide plate; 15. Through groove; 16. Second fixing plate; 17. Roller; 18. Rope; 19. First bearing; 20. First rotating shaft; 21. First drive motor; 22. First housing; 23. Second bearing; 24. Second rotating shaft; 25. Second drive motor; 26. Second housing; 27. Groove; 28. Movable rod; 29. ​​Slide groove; 30. Slider; 31. Threaded block; 32. Support plate; 33. Base; 34. Soft pad; 35. Two-way lead screw. 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] Example

[0026] Please see Figures 1 to 6This utility model provides a technical solution including two base plates 1, each with a connecting plate 3 fixedly connected to its top. A frame 11 is fixedly connected to the opposite surfaces of the two connecting plates 3. An electric push rod 13 is fixedly connected inside the frame 11. Two sets of electric push rods 13 are symmetrically installed, and there are two sets of electric push rods 13. A sliding plate 14 is fixedly connected to the other end of each set of electric push rods 13. A sliding frame 12 is fixedly connected to the top of each of the two sliding plates 14. Both sliding plates 14 are slidably connected inside the frame 11. The bottom of each set of sliding frames 12 is fixed near both sides. A second fixed plate 16 is fixedly connected to each of the two second fixed plates 16. A first bearing 19 is fixedly connected to the opposite surfaces of each of the two first bearings 19. A first rotating shaft 20 is rotatably connected to the inside of each of the two first rotating shafts 20. A roller 17 is fixedly connected to the opposite ends of the two first rotating shafts 20. A rope 18 is fixedly wound around the surface of the roller 17. A first housing 22 is fixedly connected to one side of the second fixed plate 16. A first drive motor 21 is fixedly connected inside the first housing 22. The other end of the output shaft of the first drive motor 21 is fixedly connected to the other end of the first rotating shaft 20. The bottoms of the two base plates 1 are open. The device includes two grooves 27, each with a second bearing 23 fixedly connected to its inner wall. Each second bearing 23 has a second rotating shaft 24 rotatably connected to it. The opposite ends of the two second rotating shafts 24 are fixedly connected to the same bidirectional lead screw 35. The surface of the bidirectional lead screw 35 is threaded with two threaded blocks 31. The bottom of each threaded block 31 is movably connected to a support plate 32 via a pin. The bottom of the support plate 32 is movably connected to a base 33 via a pin. The bottoms of both sets of base plates 1 are movably connected to a movable rod 28 via a pin. The other end of the rod 28 is movably connected to the surface of the support plate 32 via a pin. A second housing 26 is fixedly connected to one side of each of the two sets of base plates 1. A second drive motor 25 is fixedly connected inside each of the two sets of second housings 26. The other end of the output shaft of each of the two sets of second drive motors 25 is fixedly connected to the other end of each of the two sets of second rotating shafts 24. A housing 4 is fixedly connected to one side of each of the two sets of connecting plates 3. A conduit 7 is fixedly connected to one side of each of the housings 4. The other end of each of the two sets of conduits 7 is fixedly connected to one side of each of the two sets of sliding frames 12. A pump body 8 is fixedly connected to the surface of each of the two sets of conduits 7.

[0027] Specifically, the first drive motor 21 operates, driving the roller 17 to rotate via the first rotating shaft 20, which in turn drives the rope 18 to rotate, thus lifting the object. The electric push rod 13 operates, driving the slide plate 14 and roller 17 to move, facilitating span adjustment. The pump body 8 operates, guiding the lubricating oil in the housing 4 to the surface of the frame 11, facilitating the sliding of the frame 11, reducing friction, improving adjustment efficiency, and enhancing the practicality of the device. The second drive motor 25 operates, driving the bidirectional lead screw 35 to rotate via the second rotating shaft 24, thus driving the two threaded blocks 31 to move towards each other. With the help of the pin and the movable rod 28, the support plate 32 moves, providing support for the device.

[0028] Please refer to Figure 5 to Figure 6 The inner walls of the two grooves 27 are provided with sliding grooves 29, and sliders 30 are slidably connected in the sliding grooves 29. The sliders 30 are fixedly connected to one side of the threaded block 31.

[0029] Specifically, by opening the groove 29, the sliding action of the slider 30 within the groove 29 can make the threaded block 31 move more stably.

[0030] Please refer to Figure 1 to Figure 2 The top of both sets of base plates 1 are fixedly connected to reinforcing plates 2, and the other side of the reinforcing plates 2 is fixedly connected to both sides of the connecting plates 3.

[0031] Specifically, by setting up the reinforcing plate 2, the connecting plate 3 can be supported, thereby improving stability.

[0032] Please refer to Figure 1 to Figure 4 Both sides of the two base plates 1 are fixedly connected to the first fixing plate 9 near the four corners, and the bottom of the first fixing plate 9 is fixedly connected to the universal wheel 10.

[0033] Specifically, the installation of casters 10 facilitates the movement of the device.

[0034] Please refer to Figure 5 to Figure 6 The top of the frame 11 is provided with a through groove 15, and the sliding frame 12 is slidably connected in the through groove 15.

[0035] Specifically, by setting the through groove 15, the sliding frame 12 can be easily limited by the sliding action of the sliding frame 12 within the through groove 15.

[0036] Please refer to Figure 1 to Figure 5 Both sets of boxes 4 have observation windows 6 on their surfaces, and each observation window 6 has a scale 5 on its surface.

[0037] Specifically, by setting up the observation window 6 and the scale 5, the remaining amount of lubricating oil inside the housing 4 can be observed.

[0038] Please refer to Figure 5 to Figure 6 Each base 33 has a soft pad 34 at its bottom, which is made of rubber.

[0039] Specifically, by setting up the soft pad 34, the base 33 can be protected when the device is placed, thus ensuring the service life of the base 33.

[0040] When using this device, first, move the device to a suitable position. Then, operate the second drive motor 25, which drives the bidirectional lead screw 35 to rotate via the second rotating shaft 24, thereby causing the two threaded blocks 31 to move towards each other. With the help of the pin and the movable rod 28, the support plate 32 is moved, bringing the base 33 into contact with the ground and supporting the device. At the same time, operate the electric push rod 13, which moves the slide plate 14 and the roller 17 to adjust the span to a suitable size. Frequent span adjustments will cause the sliding frame 12 to move, resulting in increased friction and making it difficult for the sliding frame 12 to slide. The pump body 8 should be operated to guide the lubricant in the housing 4 through the conduit 7 to the gap between the frame 11 and the sliding frame 12, lubricating and reducing friction, improving adjustment efficiency, and facilitating sliding. Then, fix the object to be lifted on the surface of the rope 18. At the same time, operate the first drive motor 21, which drives the roller 17 to rotate via the first rotating shaft 20, to lift the object.

[0041] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A span-adjustable beam lifting machine, comprising two base plates (1), characterized in that: A connecting plate (3) is fixedly connected to the top of each of the two base plates (1). The two connecting plates (3) are fixedly connected to the same frame (11) on opposite sides. An electric push rod (13) is fixedly connected inside the frame (11). The two sets of electric push rods (13) are symmetrically installed, and there are two sets of electric push rods (13). The other end of each set of electric push rods (13) is fixedly connected to a sliding plate (14). The top of each of the two sliding plates (14) is fixedly connected to a sliding frame (12). The two sliding plates (14) are slidably connected inside the frame (11). The bottom of each set of sliding frames (12) is fixedly connected to a second fixing plate (16) near both sides. The opposing surfaces of the second fixed plate (16) are fixedly connected with first bearings (19), and each of the two first bearings (19) is rotatably connected with a first rotating shaft (20). The opposing ends of the two first rotating shafts (20) are fixedly connected with the same roller (17). The surface of the roller (17) is fixedly wrapped with ropes (18). A first housing (22) is fixedly connected to one side of the second fixed plate (16). A first drive motor (21) is fixedly connected inside the first housing (22). The other end of the output shaft of the first drive motor (21) is fixedly connected to the other end of the first rotating shaft (20). The bottom of the two base plates (1) is provided with grooves (27). Each of the grooves (27) has a second bearing (23) fixedly connected to its inner wall. Each of the two second bearings (23) has a second shaft (24) rotatably connected to its inner wall. The two shafts (24) have the same double-acting screw (35) fixedly connected to their opposite ends. The surface of the double-acting screw (35) is threaded with a threaded block (31), and there are two threaded blocks (31). The bottom of each of the two threaded blocks (31) is movably connected to a support plate (32) via a pin. The bottom of the support plate (32) is movably connected to a base (33) via a pin. The bottom of each of the two sets of base plates (1) is movably connected to a movable rod (28) via a pin. The other end of 8) is movably connected to the surface of the support plate (32) by a pin. A second housing (26) is fixedly connected to one side of each of the two sets of base plates (1). A second drive motor (25) is fixedly connected inside each of the two sets of second housings (26). The other end of the output shaft of each of the two sets of second drive motors (25) is fixedly connected to the other end of each of the two sets of second rotating shafts (24). A box (4) is fixedly connected to one side of each of the two sets of connecting plates (3). A conduit (7) is fixedly connected to one side of each of the box (4). The other end of each of the two sets of conduits (7) is fixedly connected to one side of each of the two sets of sliding frames (12). A pump body (8) is fixedly connected to the surface of each of the two sets of conduits (7).

2. The adjustable span beam lifting machine according to claim 1, characterized in that: The inner walls of both grooves (27) are provided with sliding grooves (29), and a slider (30) is slidably connected in the sliding grooves (29). The slider (30) is fixedly connected to one side of the threaded block (31).

3. The adjustable span beam lifting machine according to claim 1, characterized in that: The top of both sets of base plates (1) are fixedly connected to a reinforcing plate (2), and the other side of the reinforcing plate (2) is fixedly connected to both sides of the connecting plate (3).

4. The adjustable span beam lifting machine according to claim 1, characterized in that: Both sets of base plates (1) are fixedly connected to the first fixing plate (9) near the four corners on both sides, and the bottom of the first fixing plate (9) is fixedly connected to the universal wheel (10).

5. The adjustable span beam lifting machine according to claim 1, characterized in that: The top of the frame (11) is provided with a through groove (15), and the sliding frame (12) is slidably connected in the through groove (15).

6. The adjustable span beam lifting machine according to claim 1, characterized in that: Both sets of boxes (4) have observation windows (6) on their surfaces, and each observation window (6) has a scale (5) on its surface.

7. The adjustable span beam lifting machine according to claim 1, characterized in that: Each base (33) has a soft pad (34) at its bottom, and the soft pad (34) is made of rubber.

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