Stable and safe hanging crane

Abstract

The utility model relates to the technical field of hanging cranes, and discloses a stable and safe hanging crane which comprises a supporting plate, a supporting rod is fixedly connected to the upper surface of the supporting plate, a portal frame is fixedly connected to the top of the supporting rod, and a second fixing plate is slidably connected to the outer wall of the portal frame. A moving box is fixedly connected to the lower surface of the second fixing plate, a first fixing plate is fixedly connected to the outer wall of the moving box, a first motor is fixedly connected to the upper surface of the first fixing plate, a connecting shaft is fixedly connected to the output end of the first motor, and a guide assembly is arranged on the outer wall of the connecting shaft. According to the lifting device, the efficient and stable lifting effect is achieved, when the first motor drives the wire roller to rotate, meshing transmission of the first chain wheel and the chain is utilized, then the threaded rod is driven to rotate, the second pulley slides along the threaded rod, and the guide effect of the guide rod on the movable block is matched, so that the lifting action can be conducted accurately and stably; and the safety and the stability of hoisting operation are greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of crane technology, and in particular to a stable and safe crane. Background Technology

[0002] In modern industrial production, construction, and many other fields, cranes serve as crucial material handling equipment, undertaking the key tasks of efficiently transferring and lifting heavy goods. As industries continuously raise their requirements for operational efficiency and safety, higher standards are being set for crane performance. A crane with stable and safe operation can not only significantly improve production efficiency but also effectively reduce the probability of accidents, ensuring the safety of workers and company property. Therefore, its research and development and technological improvement have always been a focus of industry attention.

[0003] Existing cranes mostly employ traditional motor-driven drums to wind and unwind wire ropes, lifting heavy objects through the traction of the wire ropes. Their operating principle involves the motor rotating the drum, which winds or releases the wire rope, thus controlling the lifting and lowering of the hook. For movement, they typically rely on the crane body moving along rails or the gantry crane sliding laterally on specific tracks to achieve horizontal displacement of the load. Throughout the operation, the stability of the load depends primarily on the operator's experience and simple limiting devices, lacking precise transmission and guiding structures to ensure the smoothness of the lifting process.

[0004] However, existing cranes often experience problems such as swaying and deviation of loads during lifting due to the lack of effective power transmission and guidance mechanisms. When the motor drives the drum to wind and unwind the wire rope, the power transmission is not stable enough, easily generating impact forces that cause the load to swing during lifting or hoisting. Simultaneously, the lack of a precise guiding structure fails to effectively restrain the movement of the hook and the load, not only affecting the efficiency of lifting operations but also greatly increasing the risk of collisions, falls, and other safety accidents, seriously threatening the personal safety of on-site personnel and the normal operation of equipment. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a stable and safe hoisting crane, which aims to improve the problem of swaying and deviation of heavy objects that often occur during the lifting process of existing hoisting cranes due to the lack of an effective power transmission and guiding mechanism.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a stable and safe hoisting crane, comprising a support plate, a support rod fixedly connected to the upper surface of the support plate, a gantry frame fixedly connected to the top of the support rod, a second fixed plate slidably connected to the outer wall of the gantry frame, a movable box fixedly connected to the lower surface of the second fixed plate, a first fixed plate fixedly connected to the outer wall of the movable box, a first motor fixedly connected to the upper surface of the first fixed plate, a connecting shaft fixedly connected to the output end of the first motor, and a guide assembly provided on the outer wall of the connecting shaft;

[0007] The guiding assembly includes a roller, the inner wall of which is fixedly connected to the outer wall of a connecting shaft. A sprocket is fixedly connected to the outer wall of the roller. A chain is provided on the outer wall of the sprocket. A sprocket is provided on the inner wall of the chain. A threaded rod is fixedly connected to the outer wall of the sprocket. A pulley is slidably connected to the outer wall of the threaded rod. A movable block is provided below the pulley. A fixing ring is fixedly connected to the outer wall of the movable block. A guide rod is fixedly connected to the inner wall of the movable box.

[0008] Furthermore, a second fixing plate is fixedly connected to the outer wall of the gantry frame, a second motor is fixedly connected to the outer wall of the second fixing plate, a gear is fixedly connected to the output end of the second motor, a rack is fixedly connected to the inner wall of the gantry frame, the gear meshes with the rack, and an auxiliary support assembly is provided on the lower surface of the movable box.

[0009] Furthermore, the auxiliary support assembly includes a pulley, which is fixedly connected to the lower surface of the movable box, and a support frame is slidably connected to the outer wall of the pulley.

[0010] Furthermore, both ends of the threaded rod are rotatably connected to the inner wall of the movable box, and the movable block is slidably connected to the outer wall of the guide rod.

[0011] Furthermore, the support frame is fixedly connected to the outer wall of the support rod, and the movable box is positioned above the support frame.

[0012] Furthermore, the second motor is located on one side of the outer wall of the gantry frame, and the roller is located inside the moving box.

[0013] Furthermore, the motor is located on one side of the outer wall of the movable box, and the connecting shaft is rotatably connected to the inside of the movable box.

[0014] Furthermore, the guide rod is positioned below the threaded rod.

[0015] This utility model has the following beneficial effects:

[0016] 1. In this utility model, a highly efficient and stable lifting effect is achieved. When the motor drives the roller to rotate, the power is stably transmitted to the sprocket by the meshing transmission between the sprocket and the chain, which in turn drives the threaded rod to rotate. During this process, the pulley slides along the threaded rod, and with the guidance of the guide rod, the lifting action can be carried out accurately and smoothly, effectively avoiding swaying and deviation when lifting heavy objects, and greatly improving the safety and stability of the lifting operation.

[0017] 2. In this utility model, the two motors drive the gear and rack to mesh and drive the fixed plate two to slide along the gantry frame. At the same time, the pulley one at the bottom of the moving box slides in the support frame. This not only ensures the smooth movement of the moving box, but also provides stable support for the moving box, effectively dispersing the stress generated when the moving box moves, reducing the vibration caused by the movement of the equipment, and further enhancing the overall stability and safety of the crane operation, providing a reliable guarantee for various hoisting operations. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of a stable and safe hoisting crane proposed in this utility model;

[0019] Figure 2 This is a schematic diagram of the moving box section of a stable and safe hoisting crane proposed in this utility model.

[0020] Figure 3 This is a schematic diagram of the moving block structure of a stable and safe hoisting crane proposed in this utility model;

[0021] Figure 4 for Figure 1 Enlarged view of point A in the image;

[0022] Figure 5 This is a schematic diagram of the rack and pinion structure of a stable and safe hoisting crane proposed in this utility model.

[0023] Legend:

[0024] 1. Support plate; 2. Support rod; 3. Gantry frame; 4. Pulley 1; 5. Support frame; 6. Moving box; 7. Fixed plate 1; 8. Motor 1; 9. Connecting shaft; 10. Wire roller; 11. Sprocket 1; 12. Chain; 13. Sprocket 2; 14. Guide rod; 15. Moving block; 16. Fixed ring; 17. Threaded rod; 18. Pulley 2; 19. Fixed plate 2; 20. Motor 2; 21. Gear; 22. Rack. Detailed Implementation

[0025] 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.

[0026] Reference Figures 1-3 This utility model provides an embodiment of a stable and safe hoisting crane, including a support plate 1, a support rod 2 fixedly connected to the upper surface of the support plate 1, a gantry 3 fixedly connected to the top of the support rod 2, supporting the movement of a fixed plate 19 and a movable box 6, and bearing the load generated when lifting heavy objects, ensuring the stability of the overall structure of the crane. A fixed plate 19 is slidably connected to the outer wall of the gantry 3, a movable box 6 is fixedly connected to the lower surface of the fixed plate 19, and a fixed plate 7 is fixedly connected to the outer wall of the movable box 6, ensuring that the position of the motor 8 is stable during operation and avoiding the impact of vibration or shaking on the power transmission efficiency. The motor 8 is fixedly connected to the upper surface of the fixed plate 7, driving the connecting shaft 9 to rotate through the output end, providing the initial driving force for the entire lifting action. The output end of the motor 8 is fixedly connected to the connecting shaft 9, connecting the output end of the motor 8 to the roller 10, transmitting the rotational power of the motor 8 to the roller 10. A guide assembly is provided on the outer wall of the connecting shaft 9.

[0027] The guiding assembly includes a wire roller 10, the inner wall of which is fixedly connected to the outer wall of the connecting shaft 9. A sprocket 11 is fixedly connected to the outer wall of the wire roller 10 and rotates synchronously with it. Through its meshing with a chain 12, the rotational motion of the wire roller 10 is converted into the transmission of the chain 12. A chain 12 is provided on the outer wall of the sprocket 11, connecting the sprocket 11 and the sprocket 13, realizing the power transmission between them and ensuring that the power is stably transmitted from the wire roller 10 to the threaded rod 17. A sprocket 13 is provided on the inner wall of the chain 12, meshing with the chain 12, receiving the power transmitted by the chain 12 and driving the threaded rod 17. When rod 17 rotates, a threaded rod 17 is fixedly connected to the outer wall of sprocket 13. By rotating, pulley 18 slides along its outer wall, converting rotational motion into linear motion, providing power for the movement of moving block 15. Pulley 18 is slidably connected to the outer wall of threaded rod 17, and moving block 15 is set below pulley 18. A fixing ring 16 is fixedly connected to the outer wall of moving block 15, and guide rod 14 is fixedly connected to the inner wall of moving box 6, providing guidance for the sliding of moving block 15, ensuring that moving block 15 remains stable during movement, avoiding swaying or deviation, and improving the stability of lifting.

[0028] Specifically, by starting motor 8, which is mounted on the upper surface of fixed plate 7 and whose output end is fixedly connected to connecting shaft 9, motor 8 drives connecting shaft 9 to rotate, thereby driving the roller 10 fixedly connected to the outer wall of connecting shaft 9 to rotate. Simultaneously, sprocket 11 fixedly connected to the outer wall of roller 10 rotates. Sprocket 11 meshes with chain 12, and the rotation of sprocket 11 drives chain 12 to rotate through this meshing relationship. The inner wall of chain 12 meshes with sprocket 13, thereby driving sprocket 13 to rotate. Because sprocket 13... A threaded rod 17 is fixedly connected to the outer wall of sprocket 13. The rotation of sprocket 13 will drive the threaded rod 17 to rotate simultaneously. Both ends of the threaded rod 17 are rotatably connected to the inner wall of the movable box 6. When the threaded rod 17 rotates, the pulley 18 slidably connected to the outer wall slides along the outer wall of the threaded rod 17. The movable block 15 fixedly connected below the pulley 18 is slidably connected to the outer wall of the guide rod 14. The pulley 18 drives the movable block 15 to slide on the outer wall of the guide rod 14. The guide rod 14 is fixedly connected to the inner wall of the movable box 6, providing guidance for the movement of the movable block 15 and ensuring the smooth operation of the lifting action.

[0029] Reference Figure 4 and Figure 5 A fixed plate 19 is fixedly connected to the outer wall of the gantry frame 3. Under the meshing action of gear 21 and rack 22, it drives the moving box 6 to move along the gantry frame 3. A motor 20 is fixedly connected to the outer wall of the fixed plate 19. Through its output end, the motor drives gear 21 to rotate, providing driving force for the left and right movement of the moving box 6. Gear 21 is fixedly connected to the output end of motor 20. Through meshing with rack 22, the rotational motion of motor 20 is converted into linear motion, driving the fixed plate 19 to move. A rack 22 is fixedly connected to the inner wall of the gantry frame 3. It cooperates with gear 21, providing a reaction force for the rotation of gear 21, enabling the fixed plate 19 to move smoothly along the outer wall of the gantry frame 3. Gear 21 and rack 22 mesh, and the lower surface of the moving box 6... An auxiliary support assembly is provided, including pulley 4, which provides support and guidance during the movement of the movable box 6, reducing friction and ensuring smooth movement. Pulley 4 is fixedly connected to the lower surface of the movable box 6, and a support frame 5 is slidably connected to the outer wall of pulley 4. Both ends of the threaded rod 17 are rotatably connected to the inner wall of the movable box 6. The moving block 15 is slidably connected to the outer wall of the guide rod 14. The support frame 5 is fixedly connected to the outer wall of the support rod 2. The movable box 6 is positioned above the support frame 5. Motor 20 is positioned on one side of the outer wall of the gantry frame 3. The wire roller 10 is positioned inside the movable box 6. Motor 8 is positioned on one side of the outer wall of the movable box 6. The connecting shaft 9 is rotatably connected to the outer wall of the movable box 6. The guide rod 14 is positioned below the threaded rod 17.

[0030] Specifically, motor 20 is started. Motor 20 is fixedly connected to the outer wall of fixed plate 19, which is fixedly connected to the outer wall of gantry 3. Gear 21 is fixedly connected to the output end of motor 20, and rack 22 is fixedly connected to the inner wall of gantry 3. Gear 21 and rack 22 mesh. The output end of motor 20 drives gear 21 to rotate. Through the meshing relationship between gear 21 and rack 22, the rotation of gear 21 will drive fixed plate 19 to move left and right along the outer wall of gantry 3. At the same time, pulley 4 is fixedly connected to the lower surface of moving box 6. The outer wall of pulley 4 is slidably connected to the support frame 5 fixed to the outer wall of support rod 2. Moving box 6 is set above support frame 5. Pulley 4 at the bottom of moving box 6 will slide inside support frame 5. Support frame 5 provides stable support for the movement of moving box 6, ensuring smooth and stable left and right movement of moving box 6.

[0031] Working principle: When a stable and safe hoisting crane is needed, the first step is to lift the heavy object. By starting motor 8, the output end of motor 8 drives the roller 10 to rotate, which in turn drives sprocket 11 to rotate. With the meshing relationship between sprocket 11 and chain 12, the rotation of sprocket 11 will drive chain 12 to rotate, which in turn drives sprocket 13 to rotate. The rotation of sprocket 13 will drive threaded rod 17 to rotate simultaneously, which will cause pulley 18 to slide along the outer wall of threaded rod 17. Pulley 18 will drive moving block 15 to slide on the outer wall of guide rod 14. Guide rod 14 provides guidance for the movement of moving block 15.

[0032] In addition, when the movable box 6 needs to move left or right, the motor 20 is started. The output end of the motor 20 drives the gear 21 to rotate. With the meshing relationship between the gear 21 and the rack 22, the rotation of the gear 21 will drive the fixed plate 19 to move left or right along the outer wall of the gantry 3. At the same time, the pulley 4 at the bottom of the movable box 6 will slide inside the support frame 5. The support frame 5 provides stable support for the movement of the movable box 6.

[0033] 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. A smooth and safe overhead crane comprising a support plate (1), characterized in that: A support rod (2) is fixedly connected to the upper surface of the support plate (1), a gantry frame (3) is fixedly connected to the top of the support rod (2), a second fixed plate (19) is slidably connected to the outer wall of the gantry frame (3), a movable box (6) is fixedly connected to the lower surface of the second fixed plate (19), a first fixed plate (7) is fixedly connected to the outer wall of the movable box (6), a first motor (8) is fixedly connected to the upper surface of the first fixed plate (7), a connecting shaft (9) is fixedly connected to the output end of the first motor (8), and a guide assembly is provided on the outer wall of the connecting shaft (9). The guiding assembly includes a wire roller (10), the inner wall of which is fixedly connected to the outer wall of the connecting shaft (9), a sprocket (11) is fixedly connected to the outer wall of the wire roller (10), a chain (12) is provided on the outer wall of the sprocket (11), a sprocket (13) is provided on the inner wall of the chain (12), a threaded rod (17) is fixedly connected to the outer wall of the sprocket (13), a pulley (18) is slidably connected to the outer wall of the threaded rod (17), a moving block (15) is provided below the pulley (18), a fixing ring (16) is fixedly connected to the outer wall of the moving block (15), and a guide rod (14) is fixedly connected to the inner wall of the moving box (6).

2. A smooth and safe overhead travelling crane as claimed in claim 1, wherein: A fixing plate two (19) is fixedly connected to the outer wall of the gantry frame (3), a motor two (20) is fixedly connected to the outer wall of the fixing plate two (19), a gear (21) is fixedly connected to the output end of the motor two (20), a rack (22) is fixedly connected to the inner wall of the gantry frame (3), the gear (21) meshes with the rack (22), and an auxiliary support component is provided on the lower surface of the moving box (6).

3. A smooth and safe overhead travelling crane as claimed in claim 2, wherein: The auxiliary support assembly includes a pulley (4), which is fixedly connected to the lower surface of the movable box (6), and a support frame (5) is slidably connected to the outer wall of the pulley (4).

4. A stable and safe overhead travelling crane as claimed in claim 1, wherein: Both ends of the threaded rod (17) are rotatably connected to the inner wall of the movable box (6), and the movable block (15) is slidably connected to the outer wall of the guide rod (14).

5. A smooth and safe overhead travelling crane as claimed in claim 3, wherein: The support frame (5) is fixedly connected to the outer wall of the support rod (2), and the movable box (6) is set above the support frame (5).

6. A stable and safe overhead travelling crane as claimed in claim 2, wherein: The second motor (20) is located on one side of the outer wall of the gantry (3), and the roller (10) is located inside the moving box (6).

7. A stable and safe overhead travelling crane as claimed in claim 1, wherein: The motor (8) is located on one side of the outer wall of the movable box (6), and the outer wall of the connecting shaft (9) is rotatably connected to the inside of the movable box (6).

8. A stable and safe overhead travelling crane as claimed in claim 1, wherein: The guide rod (14) is located below the threaded rod (17).

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