Lifting device for crane for conveying steel plates

Abstract

A lifting device for a crane for conveying steel plates effectively solves the problem of low working efficiency and comprises the crane and a crane carriage, a base is arranged below the crane carriage, the base is in sliding connection with a first supporting rod, a second supporting rod, a third supporting rod and a fourth supporting rod, and a first air cylinder and a second air cylinder are installed on the base. A first piston rod and a second piston rod stretch out and draw back from the first cylinder, the first piston rod is fixedly connected with the first supporting rod, the second piston rod is fixedly connected with the second supporting rod, a third piston rod and a fourth piston rod stretch out and draw back from the second cylinder, the third piston rod is fixedly connected with the third supporting rod, and the fourth piston rod is fixedly connected with the fourth supporting rod; electric permanent magnets are fixed to the lower ends of the first supporting rod, the second supporting rod, the third supporting rod and the fourth supporting rod, a slewing bearing is installed between the first disc and the second disc, a lifting lug is fixed to the middle of the second disc, and the crane carriage is connected with the lifting lug through a steel wire rope.

Description

Technical Field

[0001] The utility model belongs to the technical field of cranes, and in particular relates to a lifting device for a crane for conveying steel plates. Background Art

[0002] Cranes are widely used in freight yards, warehouses, ports, and docks for lifting heavy objects. Steel plates are flat steel plates that are cast from molten steel and pressed after cooling. They are flat and rectangular and can be directly rolled or cut from wide steel strips. During the production of steel plates, cranes are required to transport the steel plates. Currently, during the lifting process of steel plates, the adjustable angles are relatively single. At the same time, when the steel plates are clamped by the clamping mechanism, scratches will be generated on the steel plates. At the same time, the biting work cannot be fixed in a short time, and it takes a certain amount of time for the machine to be fixed, which results in low work efficiency. Utility Model Content

[0003] In view of the above situation, in order to overcome the defects of the prior art, the purpose of the utility model is to provide a lifting device for a crane for conveying steel plates, which effectively solves the problem of low working efficiency.

[0004] The technical solution is as follows: the invention comprises a crane, a lifting trolley is operated on the crane, a base is arranged below the lifting trolley, a first support rod and a second support rod are slidably connected to the base left and right, a third support rod and a fourth support rod are slidably connected to the base front and back, a first cylinder and a second cylinder are installed on the base, a first piston rod is telescopically arranged at the left end of the first cylinder, a second piston rod is telescopically arranged at the right end of the first cylinder, the first piston rod is fixedly connected to the first support rod, the second piston rod is fixedly connected to the second support rod, a third piston rod is telescopically arranged at the front end of the second cylinder, a fourth piston rod is telescopically arranged at the rear end of the second cylinder, the third piston rod is fixedly connected to the third support rod, the fourth piston rod is fixedly connected to the fourth support rod, an electric permanent magnet is fixed to the lower ends of the first support rod, the second support rod, the third support rod and the fourth support rod, a first disc is fixedly arranged above the base, a second disc is arranged above the first disc, a slewing bearing is installed between the first disc and the second disc, a lifting lug is fixedly arranged in the middle of the second disc, and the lifting trolley is connected to the lifting lug via a steel wire rope.

[0005] Preferably, the base and the first disc are fixedly connected via a plurality of brackets.

[0006] Preferably, the slewing support comprises an outer gear ring, which is fixedly connected to the first disc, and a motor is mounted on the second disc, and a gear meshing with the outer gear ring is coaxially fixed to the motor.

[0007] Preferably, a counterweight is fixed on the second disc, and the counterweight and the motor are symmetrical with respect to the second disc.

[0008] Preferably, a plurality of sliding grooves are provided in the base, and the first support rod, the second support rod, the third support rod and the fourth support rod are all equipped with rollers located in the sliding grooves.

[0009] Compared with the traditional equipment, the utility model has the following advantages: 1) the first cylinder controls the spacing of the electro-permanent magnets in the left and right directions, and the second cylinder controls the spacing of the electro-permanent magnets in the front and back directions, so as to meet the most stable adsorption position of the steel plate, and can adapt to the adsorption of steel plates of different lengths and widths, with simple operation, high degree of automation and good flexibility; 2) the slewing bearing structure is used to cleverly control the rotation movement of the base, and the rotation angle of the four electro-permanent magnets can be adjusted, with multi-directional adjustment and a wide range of applications; 3) the electro-permanent magnets can easily adsorb or release the steel plate, will not cause scratches on the surface of the steel plate, and have the ability to instantly adsorb and fix the steel plate, with high work efficiency, safety and high efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the main view of the utility model.

[0011] Figure 2 It is a schematic diagram of the three-dimensional structure of the base, the first disc and the second disc in the utility model.

[0012] Figure 3 It is a schematic diagram of the three-dimensional structure of the first support rod in the utility model.

[0013] Figure numerals: 1. lifting trolley; 2. base; 3. first support rod; 4. second support rod; 5. third support rod; 6. fourth support rod; 7. first cylinder; 8. second cylinder; 9. first piston rod; 10. third piston rod; 11. fourth piston rod; 12. electropermanent magnet; 13. first disc; 14. second disc; 15. lifting ear; 16. motor; 17. outer gear ring; 18. counterweight; 19. sliding groove; 20. roller. DETAILED DESCRIPTION

[0014] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings.

[0015] Depend on Figures 1 to 3A lifting device for a crane for conveying steel plates is provided, comprising a crane, a lifting trolley 1 is operated on the crane, a base 2 is arranged below the lifting trolley 1, the base 2 is slidably connected to a first support rod 3 and a second support rod 4 left and right, the base 2 is slidably connected to a third support rod 5 and a fourth support rod 6 front and back, a first cylinder 7 and a second cylinder 8 are installed on the base 2, a first piston rod 9 is telescopically arranged at the left end of the first cylinder 7, a second piston rod is telescopically arranged at the right end of the first cylinder 7, the first piston rod 9 is fixedly connected to the first support rod 3, the second piston rod is fixedly connected to the second support rod 4, and the front end of the second cylinder 8 is telescopically arranged. There is a third piston rod 10, and a fourth piston rod 11 is telescopically arranged at the rear end of the second cylinder 8. The third piston rod 10 is fixedly connected to the third support rod 5, and the fourth piston rod 11 is fixedly connected to the fourth support rod 6. The lower ends of the first support rod 3, the second support rod 4, the third support rod 5 and the fourth support rod 6 are all fixed with permanent magnets 12. A first disc 13 is fixed above the base 2, and a second disc 14 is arranged above the first disc 13. A slewing bearing is installed between the first disc 13 and the second disc 14, and a lifting eye 15 is fixed in the middle of the second disc 14. The lifting trolley 1 is connected to the lifting eye 15 via a wire rope.

[0016] The base 2 and the first disc 13 are fixedly connected via a plurality of brackets.

[0017] The slewing support comprises an outer gear ring 17 , which is fixedly connected to the first disc 13 . A motor 16 is mounted on the second disc 14 , and a gear meshing with the outer gear ring 17 is coaxially fixed to the motor 16 .

[0018] In order to ensure the overall balance of the second disc 14 , a counterweight 18 is fixed to the second disc 14 , and the counterweight 18 and the motor 16 are symmetrical with respect to the second disc 14 .

[0019] In order to ensure the smooth sliding of the first support rod 3, the second support rod 4, the third support rod 5 and the fourth support rod 6 in the base 2 and reduce friction, a plurality of sliding grooves 19 are provided in the base 2, and the first support rod 3, the second support rod 4, the third support rod 5 and the fourth support rod 6 are all equipped with rollers 20 located in the sliding grooves 19.

[0020] When the utility model is in use, an air pump is installed on the lifting trolley 1, and the air pump is connected with the first cylinder 7 and the second cylinder 8 through a pipeline. The first cylinder 7, the second cylinder 8, the electro-permanent magnet 12 and the motor 16 are respectively connected with the lifting trolley 1 through electric wires. When the steel plate needs to be lifted, the lifting trolley 1 is started, and the lifting trolley 1 controls the lifting and lowering movement of the second disc 14 through the wire rope. When the second disc 14 falls to a suitable height, the first cylinder 7 is started, and the first cylinder 7 controls the first piston rod 9 and the second piston rod to synchronously move toward or away from the middle position of the base 2, and then the first support rod 3 and the second support rod 4 synchronously move toward or away from the middle position of the base 2, effectively adjusting the spacing of the electro-permanent magnet 12 in the left and right directions, and the second cylinder 8 is started, and the second cylinder 8 controls the third piston rod 9 and the second piston rod to synchronously move toward or away from the middle position of the base 2. The rod 10 and the fourth piston rod 11 synchronously move toward or away from the middle position of the base 2, and then the third support rod 5 and the fourth support rod 6 synchronously move toward or away from the middle position of the base 2, effectively adjusting the spacing of the electro-permanent magnets 12 in the front and rear directions, and adjusting the different spacings of the four electro-permanent magnets 12 according to the size of the steel plate, with good flexibility and convenient adjustment. In addition, the motor 16 is started, the motor 16 drives the gear to rotate, the gear drives the outer gear ring 17 to rotate, and the outer gear ring 17 drives the first disk 13, the bracket and the base 2 to rotate as a whole, effectively adjusting the angles of the four electro-permanent magnets 12, and adjusting in all directions. Then the four electro-permanent magnets 12 absorb the steel plate at the same time, with good stability, and then the steel plate is lifted and transported by the lifting trolley 1, with a clever structure, convenient and practical, safe and reliable.

[0021] This embodiment does not impose any formal restrictions on the shape, material, structure, etc. of the utility model. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the utility model are within the protection scope of the technical solution of the utility model.

Claims

1. A lifting device for a crane for conveying steel plates, comprising a crane, a lifting trolley (1) running on the crane, characterized in that: A base (2) is provided below the lifting trolley (1). The base (2) is slidably connected to a first support rod (3) and a second support rod (4) in the left-right direction. The base (2) is slidably connected to a third support rod (5) and a fourth support rod (6) in the front-back direction. A first cylinder (7) and a second cylinder (8) are installed on the base (2). A first piston rod (9) is telescopically provided at the left end of the first cylinder (7). A second piston rod is telescopically provided at the right end of the first cylinder (7). The first piston rod (9) is fixedly connected to the first support rod (3). The second piston rod is fixedly connected to the second support rod (4). A third piston rod (10) is telescopically provided at the front end of the second cylinder (8). A third piston rod (11) is telescopically provided at the rear end of the second cylinder (8). The fourth piston rod (11), the third piston rod (10) and the third support rod (5) are fixedly connected, the fourth piston rod (11) and the fourth support rod (6) are fixedly connected, the lower ends of the first support rod (3), the second support rod (4), the third support rod (5) and the fourth support rod (6) are all fixed with an electro-permanent magnet (12), a first disc (13) is fixed above the base (2), a second disc (14) is provided above the first disc (13), a slewing bearing is installed between the first disc (13) and the second disc (14), a lifting eye (15) is fixed in the middle of the second disc (14), and the lifting trolley (1) and the lifting eye (15) are connected via a steel wire rope.

2. A lifting device for a crane for conveying steel plates according to claim 1, characterized in that: The base (2) and the first disc (13) are fixedly connected via a plurality of brackets.

3. The lifting device for a crane for conveying steel plates according to claim 1, characterized in that: The slewing support comprises an outer gear ring (17), the outer gear ring (17) is fixedly connected to the first disc (13), a motor (16) is mounted on the second disc (14), and a gear meshing with the outer gear ring (17) is coaxially fixed to the motor (16).

4. A lifting device for a crane for conveying steel plates according to claim 3, characterized in that: A counterweight (18) is fixed on the second disc (14), and the counterweight (18) and the motor (16) are symmetrical with respect to the second disc (14).

5. The lifting device for a crane for conveying steel plates according to claim 1, characterized in that: The base (2) is provided with a plurality of sliding grooves (19), and the first support rod (3), the second support rod (4), the third support rod (5) and the fourth support rod (6) are all equipped with rollers (20) located in the sliding grooves (19).

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