Hoisting device of double-beam crane

Abstract

The utility model discloses a hoisting device of a double-beam crane, and particularly relates to the technical field of double-beam cranes, the hoisting device comprises two support frames, a hoisting frame is fixedly arranged at the tops of the support frames, two brackets are fixedly arranged at the top of the hoisting frame, rotating shafts are rotatably connected to the inner sides of the two brackets, cables are fixedly arranged on the outer sides of the rotating shafts, and the cables are fixedly connected with the hoisting frame. The rotating shaft penetrates through the support and extends to one side of the support, a first gear is fixedly arranged on the outer side of the rotating shaft, a power assembly is arranged on one side of the first gear, and a lifting assembly is arranged at the bottom of the lifting frame. By arranging the lifting assembly, the lifting device has the functions of increasing the contact area of the joint of the lifting hook and the goods and loading and unloading the goods more quickly, so that the problems that when the lifting device of the double-beam crane is used for lifting and contacting the goods, the contact area is small, and the goods cannot be loaded and unloaded more quickly due to the fact that the single-direction lifting hook is used for contacting the goods are solved. And unhooking is prone to occurring in the cargo carrying process.

Description

Technical Field

[0001] This utility model relates to the field of double-girder crane technology, and more specifically, to a hoisting device for a double-girder crane. Background Technology

[0002] Double girder cranes generally refer to double girder bridge cranes. Double girder cranes are widely used in indoor and outdoor industrial and mining enterprises, steel and chemical industries, railway transportation, ports and docks, and logistics and turnover departments and places. During the process of lifting goods with a double girder crane, the movement of the crane will cause the lifted goods to sway, which is very dangerous.

[0003] According to patent publication number CN117585580B, a double-girder crane lifting device for preventing swaying during handling is disclosed, including a mounting box. Both ends of the mounting box are rotatably connected to axles, and both ends of the axles are fixedly connected to movable wheels. A first bevel gear is installed in the middle of each axle. The four crane cables of this structure can hold the bottom lifting block at four positions, which effectively improves the swaying ability compared to a single cable lifting.

[0004] However, in actual use, such as when a double-girder crane's lifting device makes contact with the goods, the hook usually only contacts the connection point of the goods in one direction. The contact area is small, and the hook is prone to detachment during the handling of goods. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a lifting device for a double-girder crane to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a lifting device for a double-girder crane, comprising two support frames, a lifting frame fixedly mounted on the top of the support frames, two brackets fixedly mounted on the top of the lifting frame, a rotating shaft rotatably connected to the inner side of each of the two brackets, a cable fixedly mounted on the outer side of the rotating shaft, the rotating shaft passing through the bracket and extending to one side of the bracket, a first gear fixedly mounted on the outer side of the rotating shaft, a power component mounted on one side of the first gear, a lifting component mounted at the bottom of the lifting frame, and a protective component mounted on the outer side of the lifting component.

[0007] As a further description of the above technical solution:

[0008] The lifting assembly includes a lifting block fixed to one end of a cable. The bottom of the lifting block has two movable slots, and a rotating shaft is rotatably connected to the inner side of each of the two movable slots. A connecting rod is fixedly provided on the outer side of the rotating shaft, and a hook is fixedly provided at the bottom of the connecting rod.

[0009] As a further description of the above technical solution:

[0010] An electric cylinder is provided on the front side of the hook. The electric cylinder is hinged to the lifting block. A drive plate is fixedly provided at the output end of the electric cylinder. The drive plate is fixedly connected to the hook.

[0011] As a further description of the above technical solution:

[0012] The power assembly includes a stepper motor fixed to the top of the lifting frame, a reducer on one side of the stepper motor, the reducer being fixedly connected to the lifting frame, the output end of the stepper motor being fixedly connected to the input end of the reducer, and a rotating rod being fixedly provided at the output end of the reducer.

[0013] As a further description of the above technical solution:

[0014] A support plate is rotatably connected to the outside of the rotating rod. The support plate is fixedly connected to the lifting frame. A second gear is provided on one side of the support plate. The second gear is fixedly connected to the rotating rod and meshes with the first gear.

[0015] As a further description of the above technical solution:

[0016] The protective component includes multiple limiting posts fixed to the outside of the lifting block. Each of the multiple limiting posts is provided with a spring. One end of the spring is fixedly connected to the lifting block, and the other end of the spring is provided with a corrugated flexible plate.

[0017] As a further description of the above technical solution:

[0018] A protective shell is fixedly provided on one side of the corrugated flexible plate, and the protective shell is fixedly connected to the spring.

[0019] The technical effects and advantages of this utility model are as follows:

[0020] 1. By setting up a lifting assembly, compared with the existing technology, the electric cylinder can drive the hook to rotate, thereby hooking and releasing the connection end with the goods, improving the loading and unloading efficiency of the hook. The two hooks in opposite directions can more effectively prevent the hook from disengaging from the connection end with the goods, improving the safety during handling.

[0021] 2. By setting up protective components, compared with existing technologies, under the driving action of a double-girder crane, the lifting block as a whole will shake. Due to inertia, it may collide with other objects. Due to the buffering effect of the corrugated soft plate and spring, the collision object and the lifting block can be more effectively protected. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0023] Figure 2 This is a schematic diagram of the hook structure of this utility model.

[0024] Figure 3 This is a cross-sectional structural diagram of the lifting block of this utility model.

[0025] Figure 4 This is a cross-sectional view of the protective shell of this utility model.

[0026] Figure 5 This is a cross-sectional view of the bracket structure of this utility model.

[0027] The attached diagram is labeled as follows: 1. Support frame; 2. Lifting frame; 3. Bracket; 4. Rotating shaft; 5. Cable; 6. First gear; 7. Lifting block; 8. Movable groove; 9. Rotating shaft; 10. Connecting rod; 11. Hook; 12. Electric cylinder; 13. Drive plate; 14. Stepper motor; 15. Reducer; 16. Rotating rod; 17. Second gear; 18. Limiting post; 19. Spring; 20. Corrugated flexible plate; 21. Protective shell. Detailed Implementation

[0028] 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.

[0029] As attached Figure 1-5 The lifting device of a double-girder crane shown includes two support frames 1. A lifting frame 2 is fixedly mounted on the top of the support frame 1. Two brackets 3 are fixedly mounted on the top of the lifting frame 2. A rotating shaft 4 is rotatably connected to the inner side of each of the two brackets 3. A cable 5 is fixedly mounted on the outer side of the rotating shaft 4. The rotating shaft 4 passes through the bracket 3 and extends to one side of the bracket 3. A first gear 6 is fixedly mounted on the outer side of the rotating shaft 4. A power component is mounted on one side of the first gear 6. A lifting component is mounted at the bottom of the lifting frame 2. A protective component is mounted on the outer side of the lifting component.

[0030] In some embodiments, according to Figure 2 , 3 As shown, the lifting assembly includes a lifting block 7 fixed to one end of the cable 5. The bottom of the lifting block 7 has two movable grooves 8. The inner side of each movable groove 8 is rotatably connected to a rotating shaft 9. A connecting rod 10 is fixedly provided on the outer side of the rotating shaft 9. A hook 11 is fixedly provided at the bottom of the connecting rod 10.

[0031] In some embodiments, according to Figure 2 , 3As shown, an electric cylinder 12 is provided on the front side of the hook 11. The electric cylinder 12 is hinged to the lifting block 7. A drive plate 13 is fixedly provided at the output end of the electric cylinder 12. The drive plate 13 is fixedly connected to the hook 11. Through the action of the electric cylinder 12, the hook 11 can be rotated as a whole, thereby hooking and loosening the connection of the goods.

[0032] In some embodiments, according to Figure 1 , 5 As shown, the power assembly includes a stepper motor 14 fixed to the top of the lifting frame 2. A reducer 15 is provided on one side of the stepper motor 14. The reducer 15 is fixedly connected to the lifting frame 2. The output end of the stepper motor 14 is fixedly connected to the input end of the reducer 15. A rotating rod 16 is fixedly provided at the output end of the reducer 15.

[0033] In some embodiments, according to Figure 1 , 5 As shown, a support plate 22 is rotatably connected to the outside of the rotating rod. The support plate 22 is fixedly connected to the lifting frame 2. A second gear 17 is provided on one side of the support plate 22. The second gear 17 is fixedly connected to the rotating rod 16. The second gear 17 is meshed with the first gear 6.

[0034] In some embodiments, according to Figure 4 As shown, the protective assembly includes multiple limiting posts 18 fixed to the outside of the lifting block 7. Each of the multiple limiting posts 18 is provided with a spring 19. One end of the spring 19 is fixedly connected to the lifting block 7, and the other end of the spring 19 is provided with a corrugated flexible plate 20. The corrugated flexible plate 20 can better disperse the impact force, thereby providing better protection for the object being hit.

[0035] In some embodiments, according to Figure 4 As shown, a protective shell 21 is fixedly provided on one side of the corrugated flexible plate 20. The protective shell 21 is fixedly connected to the spring 19. Due to the buffering effect of the spring 19, the impact force on the protective shell 21 can be better relieved, thereby protecting the entire lifting block 7.

[0036] The working principle of this utility model is as follows: (refer to the appendix of the instruction manual) Figure 1-5 As shown, the stepper motor 14 is first started and drives the rotating rod 16 to rotate after passing through the reducer 15. The rotating rod 16 then drives the second gear 17 to rotate, the second gear 17 then drives the first gear 6 to rotate, and the first gear 6 drives the rotating shaft 4 to rotate, thereby causing the cable 5 to work downwards, and then moving the entire lifting block 7 downwards to approach the top of the connecting end of the cargo to be lifted.

[0037] Then, start the electric cylinder 12 to make the drive plate 13 and the two hooks 11 flip upwards in the direction away from the cargo connection end, thereby providing sufficient operating space for the cargo connection end. Then, start the electric cylinder 12 again to make the two hooks 11 flip towards the cargo connection end and hook them tightly. Since the two hooks 11 are in opposite directions, they can limit the cargo connection end and prevent them from coming off the hook.

[0038] Then start the stepper motor 14 to make the cable 5 drive the lifting block 7 to move upward as a whole, thereby moving the goods upward. Then, the double girder crane will complete the handling of the goods. When unloading, start the stepper motor 14 to make the cable 5 drive the lifting block 7 to move downward as a whole. After placing the goods in the designated position, start the electric cylinder 12 to drive the hook 11 to flip, thereby separating it from the end connected to the goods and completing the unloading of the goods.

[0039] When the lifting block 7 is not lifting the goods, the lifting block 7 will shake due to the driving action of the double girder crane. When the shaking hits other objects, it will first come into contact with the corrugated soft plate 20, and then the force will be transmitted to the protective shell 21. The impact force will be dispersed by the action of the spring 19, which will protect the lifting block 7 and the object that is hit.

[0040] 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. 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 hoisting device for a double-girder crane, comprising two support frames (1), characterized in that: The support frame (1) is fixedly provided with a lifting frame (2) at the top. The lifting frame (2) is fixedly provided with two brackets (3) at the top. The inner sides of the two brackets (3) are rotatably connected with a rotating shaft (4). The outer side of the rotating shaft (4) is fixedly provided with a cable (5). The rotating shaft (4) passes through the bracket (3) and extends to one side of the bracket (3). The outer side of the rotating shaft (4) is fixedly provided with a first gear (6). The first gear (6) is provided with a power component on one side. The bottom of the lifting frame (2) is provided with a lifting component. The outer side of the lifting component is provided with a protective component.

2. The hoisting device for a double-girder crane according to claim 1, characterized in that: The lifting assembly includes a lifting block (7) fixed to one end of the cable (5). The bottom of the lifting block (7) has two movable slots (8). The inner sides of the two movable slots (8) are rotatably connected to a rotating shaft (9). A connecting rod (10) is fixedly provided on the outer side of the rotating shaft (9). A hook (11) is fixedly provided at the bottom of the connecting rod (10).

3. The hoisting device for a double-girder crane according to claim 2, characterized in that: An electric cylinder (12) is provided on the front side of the hook (11). The electric cylinder (12) is hinged to the lifting block (7). A drive plate (13) is fixedly provided at the output end of the electric cylinder (12). The drive plate (13) is fixedly connected to the hook (11).

4. The hoisting device for a double-girder crane according to claim 1, characterized in that: The power assembly includes a stepper motor (14) fixed on the top of the lifting frame (2), a reducer (15) is provided on one side of the stepper motor (14), the reducer (15) is fixedly connected to the lifting frame (2), the output end of the stepper motor (14) is fixedly connected to the input end of the reducer (15), and a rotating rod (16) is fixedly provided on the output end of the reducer (15).

5. The hoisting device for a double-girder crane according to claim 4, characterized in that: A support plate (22) is rotatably connected to the outside of the rotating rod. The support plate (22) is fixedly connected to the lifting frame (2). A second gear (17) is provided on one side of the support plate (22). The second gear (17) is fixedly connected to the rotating rod (16). The second gear (17) meshes with the first gear (6).

6. The hoisting device for a double-girder crane according to claim 5, characterized in that: The protective assembly includes multiple limiting posts (18) fixed on the outside of the lifting block (7). Each of the multiple limiting posts (18) is provided with a spring (19). One end of the spring (19) is fixedly connected to the lifting block (7), and the other end of the spring (19) is provided with a corrugated flexible plate (20).

7. The hoisting device for a double-girder crane according to claim 6, characterized in that: A protective shell (21) is fixedly provided on one side of the corrugated flexible plate (20), and the protective shell (21) is fixedly connected to the spring (19).

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