Unmanned crane for carrying steel coils

Abstract

The invention belongs to the technical field of unmanned cranes, and particularly relates to an unmanned crane for carrying steel coils, the unmanned crane comprises a hoisting machine and a hoisting tool arranged on the hoisting machine, the hoisting tool comprises two clamping seats moving towards each other or away from each other, and clamp mechanisms are arranged on the clamping seats; the clamp mechanism comprises a supporting rod, a clamping piece and a linkage piece, the supporting rod is transversely inserted into the center of the steel coil to support the steel coil when the steel coil is hoisted, the clamping piece is used for pressing the end face of the steel coil when the steel coil is hoisted, and the linkage piece is used for connecting the supporting rod and the clamping piece. A steel coil can be supported through the supporting rod in the lifting appliance mechanism, and in the steel coil supporting process, the linkage piece drives the clamping piece to press the end face of the steel coil, so that the problem that the steel coil is damaged due to the fact that the steel coil is lifted after being rigidly clamped is solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of driverless cranes, and particularly relates to a driverless crane for handling steel coils. Background Art

[0002] During the handling process of steel coils, cranes are usually used for hoisting operations. However, due to the large inertia of steel coils, they are prone to rolling or falling when not firmly fixed or the handling speed is uneven. When braking suddenly, they may roll forward due to inertia, causing serious accidents.

[0003] Therefore, during the handling process, it is necessary to be vigilant and avoid sudden braking and sharp turns. Using a driverless crane can avoid human operation errors and reduce the risk of accidents. When the existing driverless crane spreader clamps and lifts a steel coil, generally, the clamping rod of the spreader is first inserted into the central hole of the steel coil, and then the spreader is locked. At this time, there is still a gap between the clamping rod and the top of the central hole of the steel coil. After the crane performs the hoisting operation, the spreader is lifted, and the clamping rod moves to contact the top of the central hole of the steel coil. As the spreader continues to be lifted, the spreader then lifts the steel coil. During the process of the clamping rod moving to contact the top of the central hole of the steel coil, there will be contact friction between the spreader and the surface of the steel coil, which easily causes scratches on the surface of the steel coil, thus affecting the surface quality of the steel coil. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a driverless crane for handling steel coils in view of the deficiencies of the prior art. In the present invention, the supporting rod in the spreader mechanism can support the steel coil, and during the process of supporting the steel coil, the clamping member is driven by the linkage member to press against the end face of the steel coil, avoiding the problem of steel coil damage caused by rigidly clamping the steel coil and then lifting it.

[0005] This solution is achieved by the following technical measures: A driverless crane for handling steel coils includes a hoisting machine and a spreader tooling arranged on the hoisting machine. The spreader tooling includes two clamping seats that move towards or away from each other. A clamping mechanism is arranged on the clamping seat. The clamping mechanism includes a supporting rod, a clamping member, and a linkage member. The supporting rod is horizontally inserted into the center of the steel coil to support it during hoisting. The clamping member is used to press against the end face of the steel coil during hoisting. The linkage member is used to connect the supporting rod and the clamping member.

[0006] Preferably, an elastic connecting member is arranged between the linkage member and the clamping member. When the supporting rod supports the steel coil, the clamping member is driven by the linkage member and the elastic connecting member to elastically press against the end face of the steel coil.

[0007] Preferably, a clamping frame is fixedly connected to the bottom end of the clamping seat. The clamping member includes a clamping plate arranged inside the clamping frame. A positioning rod that slides through the clamping frame is fixedly connected to the side of the clamping plate facing the clamping frame. The elastic connecting member is arranged on the positioning rod and is located between the clamping frame and the clamping plate.

[0008] Preferably, the elastic connecting member includes a driving plate disposed between the clamping frame and the clamping plate, an elastic element disposed between the driving plate and the clamping plate, and a limiting ring disposed on the positioning rod, the limiting ring being located between the driving plate and the clamping frame, and the driving plate being in transmission connection with the linkage member.

[0009] Preferably, the limiting ring is threadedly connected to the positioning rod.

[0010] Preferably, the linkage member includes a main linkage member and a driven rod. The main linkage member is slidably disposed longitudinally outside the clamping frame. A positioning seat is fixedly connected to the outside of the clamping frame. The main linkage member slidably penetrates through the positioning seat. One end of the driven rod is rotatably connected to the top end of the main linkage member, and the other end of the driven rod is rotatably connected to the driving plate.

[0011] Preferably, the linkage member further includes two connecting seats slidably disposed transversely inside the clamping frame. There are two supporting rods respectively and fixedly parallel to the two connecting seats. One end of the connecting seat far from the supporting rod is fixedly connected with a connecting column slidably penetrating through the clamping frame, and a horizontal sliding groove slidably matched with the connecting column is formed on the clamping frame. When the elastic element is in a natural telescopic state, the two connecting columns are respectively located at both ends of the horizontal sliding groove, and a driving rod is rotatably connected between the connecting column and the bottom end of the main linkage member.

[0012] Preferably, a positioning seat is fixedly connected to the outside of the clamping frame, and the main linkage member slidably penetrates through the positioning seat.

[0013] Preferably, a flexible cushion plate is fixed to the side of the clamping plate close to the steel coil.

[0014] Advantages of the present invention: In the present invention, the supporting rod in the lifting device can support the steel coil, and during the process of supporting the steel coil, the clamping member is guided by the linkage member to press the end face of the steel coil, avoiding the problem of damage to the steel coil caused by rigidly clamping the steel coil and then lifting it. It can not only ensure the stability and safety of the steel coil during hoisting, but also protect the surface quality of the steel coil. Description of the Drawings

[0015] Figure 1 is a three-dimensional structural schematic diagram of an unmanned crane for steel coil handling.

[0016] Figure 2 is a sectional structural schematic diagram of an unmanned crane for steel coil handling.

[0017] Figure 3 is a three-dimensional structural schematic diagram of an unmanned crane for steel coil handling in a use state.

[0018] Figure 4 is a three-dimensional structural schematic diagram of the lifting device in an unmanned crane for steel coil handling Figure 1。

[0019] Figure 5 is a schematic three - dimensional structure of the spreader mechanism in an unmanned crane for steel coil handling Figure 2 。

[0020] Figure 6 is a schematic exploded view of the spreader mechanism in an unmanned crane for steel coil handling.

[0021] In the figure: 1. Spreader tooling; 11. Clamping seat; 2. Clamping mechanism; 21. Supporting rod; 22. Clamping piece; 221. Clamping plate; 222. Positioning rod; 223. Flexible cushion plate; 23. Linkage part; 231. Main linkage part; 232. Driven rod; 2331. Connecting seat; 2332. Connecting column; 2333. Driving rod; 24. Elastic connecting piece; 241. Driving plate; 242. Elastic element; 243. Limiting ring; 25. Clamping frame; 251. Positioning seat. Specific implementation manner

[0022] To clearly illustrate the technical features of this solution, the following is an elaboration of this solution through specific implementation manners and in combination with its attached drawings.

[0023] An unmanned crane for steel coil handling includes a hoisting machine and a spreader tooling 1 provided on the hoisting machine. The spreader tooling 1 includes two clamping seats 11 that move towards or away from each other. A clamping mechanism 2 is provided on the clamping seats 11. The distance between the two clamping seats 11 can be adjusted according to the size of the steel coil to adapt to steel coils of different specifications. Specifically, the upper ends of the two clamping seats 11 are slidably connected to the spreader tooling 1. The opposite ends of the two spreader toolings 1 are respectively fixedly connected with lead screws. The opposite ends of the two lead screws are respectively threadedly connected to the two ends of an internal - thread sleeve. By rotating the internal - thread sleeve forward and backward, the two lead screws can move towards or away from the internal - thread sleeve. When the two lead screws move, they drive the two clamping seats 11 to move towards or away from each other along the spreader tooling 1, thereby realizing the adjustment of the distance between the two clamping seats 11.

[0024] The clamping mechanism 2 includes a supporting rod 2, a clamping piece 22, and a linkage part 23. The supporting rod 21 is horizontally inserted into the center of the steel coil to support the steel coil during hoisting. The clamping piece 22 is used to press the end face of the steel coil during hoisting. The linkage part 23 is used to connect the supporting rod 21 and the clamping piece 22.

[0025] When the hoisting machine lifts the steel coil, the supporting rod 21 is inserted into the center of the steel coil. The supporting rod 21 can closely fit the inner side of the steel coil, thereby providing stable support for the steel coil and ensuring the stability and safety of the steel coil during hoisting. The supporting rod 21 is cylindrical to avoid scratching the steel coil.

[0026] When the supporting rod 21 is inserted into the center of the steel coil and lifted, the clamping member 22 moves upward synchronously with the supporting rod 21 to the end face of the steel coil and presses against the end face of the steel coil. The clamping member 22 can prevent the steel coil from directly contacting the lifting tool, thus effectively preventing the steel coil from being scratched during the hoisting process.

[0027] The linkage member 23 can ensure the synchronous linkage between the supporting rod 21 and the clamping member 22. During the process of the supporting rod 21 being inserted into the center of the steel coil and lifting the steel coil upward, the supporting rod 21 drives the clamping member 22 to move to the end face position of the steel coil and gradually presses against the end face of the steel coil through the linkage member 23. While ensuring the stability and safety of the steel coil hoisting, it can also prevent the steel coil from directly contacting the lifting tool, thus avoiding the scratching problem caused by the lifting tool directly clamping the steel coil and then lifting it, and ensuring the surface quality of the steel coil.

[0028] An elastic connecting member 24 is arranged between the linkage member 23 and the clamping member 22. When the supporting rod 21 supports the steel coil, the clamping member 22 is elastically pressed against the end face of the steel coil through the linkage member 23 and the elastic connecting member 24.

[0029] When the supporting rod 21 supports the steel coil, the clamping member 22 is driven to move towards the end face of the steel coil through the linkage member 23 and the elastic connecting member 24. During the moving process, the elastic connecting member 24 can be finely adjusted according to the width of the steel coil to ensure that the clamping member 22 can closely fit on the end face of the steel coil. The elastic connecting member 24 can prevent the clamping member 22 from directly and rigidly contacting the end face of the steel coil and causing scratches on the surface of the steel coil, and can also ensure the close fit between the clamping member 22 and the steel coil, ensuring the firm clamping of the steel coil.

[0030] A clamping frame 25 is fixedly connected to the bottom end of the clamping seat 11. The clamping member 22 includes a clamping plate 221 arranged inside the clamping frame 25. During the hoisting process of the steel coil, the clamping plate 221 contacts the end face of the steel coil to limit the steel coil. A positioning rod 222 that slides through the clamping frame 25 is fixedly connected to the side of the clamping plate 221 facing the clamping frame 25. The elastic connecting member 24 is arranged on the positioning rod 222 and is located between the clamping frame 25 and the clamping plate 221. The stability of the movement of the clamping plate 221 is ensured by adopting the positioning rod 222 and the elastic connecting member 24. The positioning rod 222 not only plays a role in connecting the clamping plate 221 and the clamping frame 25, but also can slide relative to the clamping frame 25 to realize fine adjustment of the position of the clamping plate 221, so that the clamping plate 221 can adapt to steel coils of different widths and presses against the end face of the steel coil under the action of the elastic connecting member 24.

[0031] The elastic connecting member 24 includes a driving plate 241, an elastic element 242 and a limiting ring 243. The elastic element 242 is a spring. The driving plate 241 is arranged between the clamping frame 25 and the clamping plate 221 and is connected to the linkage member 23. The elastic element 242 is located between the driving plate 241 and the clamping plate 221 and is sleeved on the positioning rod 222. The limiting ring 243 is located between the driving plate 241 and the clamping frame 25 and is arranged on the positioning rod 222. The limiting ring 243 is threadedly connected to the positioning rod 222, and the position of the limiting ring 243 on the positioning rod 222 can be easily adjusted to adjust the moving stroke of the driving plate 241, and can ensure that the positioning rod 222 will not separate from the clamping frame 25. When the supporting rod 21 drives the linkage member 23, the linkage member 23 will drive the driving plate 241 to move, so that the clamping plate 221 presses the end face of the steel coil, and the elastic element 242 enables the clamping plate 221 to adapt to the clamping needs of steel coils of different widths, and also has a certain elastic buffer when the clamping plate 221 presses the end face of the steel coil to avoid scratches on the surface of the steel coil.

[0032] The linkage 23 includes a main linkage 231 and a driven rod 232. The main linkage 231 is slidably arranged on the outer side of the clamping frame 25 in the longitudinal direction. A positioning seat 251 is fixedly connected to the outer side of the clamping frame 25. The main linkage 231 slides through the positioning seat 251. The positioning seat 251 not only ensures the sliding stability of the main linkage 231, but also improves the overall rigidity and stability of the clamp mechanism 2, so that the clamp mechanism 2 can clamp and support the steel coil more accurately, improving the safety and efficiency of the lifting process. One end of the driven rod 232 is rotatably connected to the top of the main linkage 231, and the other end of the driven rod 232 is rotatably connected to the driving plate 241. When the main linkage 231 moves up and down, it can drive the driven rod 232 to swing up and down. When the driven rod 232 swings up and down, it drives the driving plate 241 to move horizontally outward and inward.

[0033] The linkage member 23 also includes two connecting seats 2331 that are laterally slidably arranged on the inner side of the clamping frame 25. The supporting rods 21 have two and are fixed in parallel on the two connecting seats 2331. One end of the connecting seat 2331 away from the supporting rod 21 is fixedly connected with a connecting column 2332 that slides through the clamping frame 25, and the clamping frame 25 is provided with a horizontal sliding groove that slides with the connecting column 2332. When the elastic element 242 is in a natural telescopic state, the two connecting columns 2332 are respectively located at the two ends of the horizontal sliding groove, and a driving rod 2333 is rotatably connected between the connecting column 2332 and the bottom end of the main linkage member 231.

[0034] After the two supporting rods 21 are inserted into the steel coil and moved upward, the two supporting rods 21 approach each other under the action of the inner circumferential surface of the steel coil, so that the two connecting seats 2331 approach each other. The two connecting seats 2331 drive the two connecting columns 2332 to approach each other respectively. The two connecting columns 2332 drive the main linkage 231 to slide downward through the driving rod 2333. The main linkage 231 drives the driven rod 232 to rotate. The driven rod 232 pushes the driving plate 241 to move. The driving plate 241 drives the elastic element 242, the positioning rod 222 and the clamping plate 221 to move. Under the action of the elastic element 242, the clamping plate 221 gradually and slowly presses against the end face of the steel coil without damaging the end face of the steel coil.

[0035] A flexible cushion plate 223 is fixed on the side of the clamping plate 221 close to the steel coil. The flexible cushion plate 223 can effectively avoid scratches or damages caused by rigid contact between the clamping plate 221 and the steel coil. In addition, the flexible cushion plate 223 can also increase the friction between the clamping plate 221 and the steel coil, so that the clamping plate 221 fits more closely on the end face of the steel coil, improving the clamping stability.

[0036] The technical features not described in the present invention can be realized by the prior art and will not be elaborated here. The present invention is not limited to the above specific embodiments. Changes, modifications, additions or substitutions made by those of ordinary skill in the art within the scope of the essence of the present invention shall also fall within the protection scope of the present invention.

Claims

1. An unmanned crane for handling steel coils, comprising a hoisting machine and a sling tool (1) arranged on the hoisting machine, the sling tool (1) comprising two clamping seats (11) that move towards or away from each other, characterized in that: A clamping mechanism (2) is provided on the clamping seat (11), the clamping mechanism (2) comprising a supporting rod (21), a clamping member (22) and a linkage member (23), the supporting rod (21) being inserted transversely into the center of the steel coil to support the steel coil when hoisting, the clamping member (22) being used to press the end surface of the steel coil when hoisting, and the linkage member (23) being used to connect the supporting rod (21) and the clamping member (22).

2. The unmanned crane for steel coil handling according to claim 1, characterized in that: An elastic connecting member (24) is provided between the linkage member (23) and the clamping member (22). When the supporting rod (21) supports the steel coil, the clamping member (22) is driven by the linkage member (23) and the elastic connecting member (24) to elastically press the end surface of the steel coil.

3. The unmanned crane for steel coil handling according to claim 2, characterized in that: A clamping frame (25) is fixedly connected to the bottom end of the clamping seat (11), and the clamping member (22) comprises a clamping plate (221) arranged on the inner side of the clamping frame (25), and a positioning rod (222) slidingly penetrating the clamping frame (25) is fixedly connected to the side of the clamping plate (221) facing the clamping frame (25), and the elastic connecting member (24) is arranged on the positioning rod (222) and is located between the clamping frame (25) and the clamping plate (221).

4. The unmanned crane for steel coil handling according to claim 3, characterized in that: The elastic connecting member (24) comprises a driving plate (241), an elastic element (242) and a limiting ring (243); the driving plate (241) is arranged between the clamping frame (25) and the clamping plate (221) and is connected to the linkage member (23); the elastic element (242) is located between the driving plate (241) and the clamping plate (221) and is sleeved on the positioning rod (222); and the limiting ring (243) is located between the driving plate (241) and the clamping frame (25) and is arranged on the positioning rod (222).

5. The unmanned crane for steel coil handling according to claim 4, characterized in that: The limiting ring (243) is threadedly connected to the positioning rod (222).

6. The unmanned crane for steel coil handling according to claim 5, characterized in that: The linkage member (23) comprises a main linkage member (231) and a driven rod (232); the main linkage member (231) is slidably arranged on the outside of the clamping frame (25) in the longitudinal direction; a positioning seat (251) is fixedly connected to the outside of the clamping frame (25); the main linkage member (231) slides through the positioning seat (251); one end of the driven rod (232) is rotatably connected to the top end of the main linkage member (231); and the other end of the driven rod (232) is rotatably connected to the driving plate (241).

7. The unmanned crane for steel coil handling according to claim 6, characterized in that: The linkage member (23) further comprises two connecting seats (2331) which are slidably arranged on the inner side of the clamping frame (25) in a transverse direction. The supporting rods (21) have two and are respectively fixed in parallel on the two connecting seats (2331). One end of the connecting seat (2331) which is away from the supporting rod (21) is fixedly connected with a connecting column (2332) which slides through the clamping frame (25). The clamping frame (25) is provided with a horizontal slide groove which is slidably matched with the connecting column (2332). When the elastic element (242) is in a naturally telescopic state, the two connecting columns (2332) are respectively located at the two ends of the horizontal slide groove. A driving rod (2333) is rotatably connected between the connecting column (2332) and the bottom end of the main linkage member (231).

8. The unmanned crane for steel coil handling according to claim 7, characterized in that: A positioning seat (251) is fixedly connected to the outer side of the clamping frame (25), and the main linkage member (231) slides through the positioning seat (251).

9. An unmanned crane for steel coil handling according to any one of claims 1 to 8, characterized in that: A flexible pad (223) is fixed to one side of the clamping plate (221) close to the steel coil.

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