A special crane for metallurgy with a rotatable trolley

Abstract

The present invention discloses a metallurgical crane with a rotatable trolley, comprising two main beams, a trolley running mechanism being provided on the main beams, the trolley running mechanism comprising a lifting trolley and a mounting frame, the mounting frame being fixedly connected to the bottom of the lifting trolley, the bottom of the mounting frame being fixedly connected to a slewing bearing device, and the bottom of the slewing bearing device being provided with a mounting plate; fixed plates are slidably connected to both sides of the mounting plate, a driving push rod is provided at the top of the fixed plate, a horizontally arranged placement plate is fixedly connected between the bottom ends of the fixed plates, and a through hole is provided at the center position of the placement plate; a main lifting mechanism and an auxiliary lifting mechanism are also provided at the bottom of the mounting plate, a main lifting hook is provided below the main lifting mechanism, the main hook is located just above the placement plate, and an auxiliary lifting hook is provided below the auxiliary lifting mechanism; the present invention can avoid the shaking of the molten steel ladle when lifting the molten steel ladle, so that the transportation of the molten steel ladle is faster, more stable and more flexible, thereby improving the metallurgical production efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of lifting equipment, in particular to a special crane for metallurgy with a rotatable trolley. Background Art

[0002] Metallurgical lifting equipment is usually installed in metal smelting workshops to lift molten metal. The container for molten metal is mostly a ladle. There are two common ways to transport the ladle. One is to use a special lifting device, hang it on the lifting ears on both sides of the ladle, and then lift the ladle. However, the ladle will shake during lifting, which results in the ladle lifting speed not being too fast, making the transfer of the ladle take a long time; the other is to use a ladle car to transport the ladle. The transportation is stable and the movement speed is adjustable, but the ladle car needs to run on a designated track. The transportation route of the ladle is fixed and inflexible, and the installation of auxiliary facilities will increase the cost of metallurgical production. Summary of the Invention

[0003] The purpose of the present invention is to provide a metallurgical crane with a rotatable trolley, which can avoid the shaking of the molten steel ladle when lifting it, making the transportation of the molten steel ladle faster, more stable and more flexible, and improving the metallurgical production efficiency.

[0004] Base comprises support, castor, and frame upper is provided with guide rail, and support and conveyer frames movable end contact site are provided with recoil spring or rubber cushion, and castor is arranged on the pin of base bottom four, to carry mobile handler location.

[0005] Optionally, a limit block is provided on the outer periphery of the lifting ear of the ladle, and limit plates matching the limit blocks are provided on both sides of the placement plate. Two limit plates are provided on each side of the placement plate, and the two limit plates are spaced apart. When the ladle is placed in the placement plate, the limit block is located between the two limit plates.

[0006] Optionally, the main hook includes a first hook frame, a first movable pulley is provided on the top of the first hook frame, horizontal sliding holes are respectively opened at both ends of the first hook frame, the main hook is slidably connected in the sliding holes, and a horizontal push rod for adjusting the position of the main hook is also provided on the first hook frame.

[0007] Optionally, the auxiliary hook includes a second hook frame, a second movable pulley is provided on the top of the second hook frame, an auxiliary hook is hinged on the bottom of the second hook frame, and an adjustment push rod is hinged between the auxiliary hook and the second hook frame.

[0008] Optionally, two rows of clamping wheels are installed on the top of the bottom plate of the mounting frame, each row of clamping wheels corresponds to a main beam, and the clamping wheels fit the bottom of the main beam.

[0009] The metallurgical crane with a rotatable trolley of the present invention has the following advantages:

[0010] (1) When the ladle is transferred, it is placed on a placement plate, which can limit and stabilize the ladle. When the end beam and the trolley operating mechanism move, there is no need to excessively limit the moving speed, thereby improving the transfer efficiency of the ladle, preventing the ladle from shaking, and avoiding molten steel splashing to the greatest extent.

[0011] (2) The distance between the two main hooks on the main hook is adjustable to accommodate ladles of various specifications.

[0012] (3) The adjusting rod on the auxiliary hook can adjust the angle of the auxiliary hook, making it easier for the auxiliary hook to connect with the lifting ring on the ladle.

[0013] (4) The clamping wheel can assist the lifting trolley to move more stably on the main beam, avoiding tilting, jamming, and rollover when the lifting trolley moves. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the present invention.

[0015] Figure 2 is a top view of the mounting plate.

[0016] Figure 3 It is a schematic diagram of the coordination between the placement plate and the ladle.

[0017] Figure 4 It is a structural diagram of the main hook.

[0018] Figure 5 It is a structural diagram of the auxiliary hook. DETAILED DESCRIPTION

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] like Figure 1-Figure 2 The figure shows a metallurgical crane with a rotatable trolley. The crane comprises two main beams 1, with end beams mounted at the ends of the main beams 1. A trolley operating mechanism is mounted on the main beams 1. The trolley operating mechanism comprises a lifting trolley 2 and a mounting frame 3. The mounting frame 3 is fixedly connected to the bottom of the lifting trolley 2. A slewing bearing 4 is fixedly connected to the bottom of the mounting frame 3. A rotating motor that drives the slewing bearing 4 is mounted on the top of the mounting frame 3. A mounting plate 5 is mounted on the bottom of the slewing bearing 4. Slide slots 6 are defined on either side of the mounting plate 5. A fixed plate 7 is slidably connected within the slide slots 6. The fixed plate 7 is vertically arranged. The top end of the fixed plate 7 extends upward through the slide slots 6 and is connected to a driving push rod 8 fixedly connected to the top of the fixed plate 7. Each fixed plate 7 corresponds to one driving push rod 8. A horizontal placement plate 9 is fixedly connected between the bottom ends of the fixed plates 7. A through hole is defined in the center of the placement plate 9 to accommodate a molten steel ladle 14. When the molten steel ladle 14 is transferred, the ladle 14 is placed into the through hole. A main lifting mechanism 10 and an auxiliary lifting mechanism 11 are also provided at the bottom of the mounting plate 5. A main hook 12 is provided below the main lifting mechanism 10, and the main hook 12 is connected to the drum of the main lifting mechanism 10 through a wire rope. The main hook 12 is located directly above the placement plate 9. An auxiliary hook 13 is provided below the auxiliary lifting mechanism 11, and the auxiliary hook 13 is connected to the drum of the auxiliary lifting mechanism 11 through a wire rope. The main hook 12 is used to lift the molten steel ladle 14, and the auxiliary hook 13 is used to dump the molten steel ladle 14.

[0021] The working process of the present invention is as follows: when the steel ladle 14 needs to be transferred, the push rod 8 is first driven to move, so that the fixed plate 7 and the placement plate 9 leave the bottom of the main hook 12, and then the main hook 12 is hung on the lifting ears 15 on both sides of the steel ladle 14, and the main lifting mechanism 10 lifts the steel ladle 14, lifts the steel ladle 14 to a height higher than the placement plate 9, and then drives the push rod 8 to move again, so that the placement plate 9 moves to the bottom of the steel ladle 14, and the lifting mechanism lowers the steel ladle 14 again, and places the steel ladle 14 into the through hole of the placement plate 9. The placement plate 9 can limit and stabilize the steel ladle 14. During the movement, the steel ladle 14 will not shake, and the splashing of molten steel is avoided to the greatest extent. There is no need to excessively limit the moving speed of the end beam and the trolley running mechanism, thereby improving the transfer efficiency of the steel ladle 14. When the ladle 14 moves to the specified position, the main lifting mechanism 10 lifts the ladle 14 away from the placement plate 9, and then the auxiliary lifting mechanism drives the auxiliary hook 13 to hook the lifting ring 16 at the bottom of the ladle 14, and then the auxiliary hook 13 lifts the lifting ring 16 upward, and the ladle 14 can rotate around the lifting ear 15 to pour out the molten steel inside.

[0022] Further, if Figure 3As shown, a limit block 17 is provided on the outer periphery of the lifting lug 15 of the ladle 14, and two limit plates 18 are provided on both sides of the placement plate 9. The two limit plates 18 on the same side are spaced apart, and the spacing distance is slightly greater than the width of the limit block 17. When the ladle 14 is placed into the through hole on the placement plate 9, the limit block 17 is located between the two limit plates 18. Because the alignment of the ladle 14 and the through hole cannot be observed by the staff from the outside, if the deviation between the through hole and the ladle 14 is large, the wire rope may be in a state of tilted stretching. When the main hook 12 lifts the ladle 14 away from the placement plate 9, the wire rope needs to resume the vertical stretching state, so the ladle 14 may shake to a large extent, which may easily cause the dangerous situation of molten steel splashing out. The limit plate 18 and the limit block 17 can assist external staff in aligning the ladle 14 with the through hole. As long as the limit block 17 is located between the limit plates 18 when the ladle 14 is lowered, it can be considered that the ladle 14 is aligned with the through hole, and the main hook 12 will not shake significantly when lifting the ladle 14.

[0023] Further, if Figure 4 As shown, the main hook 12 includes a first hook frame 19 and two main hooks 20. A first movable pulley 21 is provided on the top of the first hook frame 19. Horizontally arranged sliding holes 22 are respectively opened at both ends of the first hook frame 19. A main hook 20 is arranged in each sliding hole 22. A sliding rod 23 is provided on the top of the main hook 20. The sliding rod 23 is slidably connected in the sliding hole 22. Horizontal push rods 24 for adjusting the position of the main hook 20 are provided on both sides of the first hook frame 19. The sliding end of the horizontal push rod 24 passes through the first hook frame 19 and is arranged in the sliding hole 22, and the movable end of the horizontal push rod 24 is fixedly connected to the sliding rod 23. The distance between the two main hooks 20 is adjustable to accommodate ladles 14 of various specifications, thereby increasing the applicable range of the main hook 12. When the specifications of the ladle 14 are larger, the horizontal push rod 24 contracts, the two main hooks 20 move outward, and the distance between the main hooks 20 becomes larger; when the specifications of the ladle 14 are smaller, the horizontal push rod 24 extends, the two main hooks 20 move inward, and the distance between the main hooks 20 becomes smaller.

[0024] Further, if Figure 5As shown, the auxiliary hook 13 includes a second hook frame 25, a second movable pulley 26 is provided at the top of the second hook frame 25, an auxiliary hook 27 is hingedly connected to the bottom of the second hook frame 25, and an adjustment push rod 28 is hingedly connected between the auxiliary hook 27 and the second hook frame 25. Because the ladle 14 is generally wide at the top and narrow at the bottom, when the auxiliary hook 27 is matched with the lifting ring 16, it may be difficult for the auxiliary hook 27 to hook the lifting ring 16 due to obstruction from the upper part of the ladle 14 or other angle issues. Moreover, the temperature of the ladle 14 is extremely high, and the position of the auxiliary hook 27 cannot be manually adjusted. Therefore, an adjustment push rod 28 is added. By adjusting the extension or contraction of the push rod 28, the angle and position of the auxiliary hook 27 can be adjusted so that it can quickly hook the lifting ring 16 of the ladle 14, thereby successfully completing the dumping operation.

[0025] Furthermore, two rows of clamping wheels 29 are installed on the top of the bottom plate of the mounting frame 3. Each row of clamping wheels 29 corresponds to a main beam 1, and the clamping wheels 29 are in contact with the bottom of the main beam 1. The running wheels of the hoisting trolley 2 are pressed on the track on the top of the main beam 1, and the clamping wheels 29 on the mounting frame 3 are pressed against the bottom of the main beam 1. The clamping wheels 29 can help the hoisting trolley 2 move more stably on the main beam 1, preventing the hoisting trolley 2 from tilting, getting stuck, or tipping over during movement, thereby improving the safety of metallurgical production.

[0026] The embodiments described above are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

Claims

1. A metallurgical crane with a rotatable trolley, comprising two main beams, end beams mounted at the ends of the main beams, and a trolley running mechanism provided on the main beams, characterized in that: The trolley running mechanism includes a lifting trolley and a mounting frame, the mounting frame is fixedly connected to the bottom of the lifting trolley, the bottom of the mounting frame is fixedly connected to a slewing bearing device, and the bottom of the slewing bearing device is provided with a mounting plate; fixed plates are slidably connected to both sides of the mounting plate, the fixed plates are vertically arranged, and a driving push rod is provided on the top of the fixed plates, and a horizontally arranged placement plate is fixedly connected between the bottom ends of the fixed plates, and a through hole matching the ladle is provided at the center position of the placement plate; a main lifting mechanism and an auxiliary lifting mechanism are also provided at the bottom of the mounting plate, a main hook is provided below the main lifting mechanism, the main hook is connected to the drum of the main lifting mechanism by a wire rope, the main hook is located directly above the placement plate, and an auxiliary hook is provided below the auxiliary lifting mechanism, and the auxiliary hook is connected to the drum of the auxiliary lifting mechanism by a wire rope.

2. The metallurgical crane with a rotatable trolley according to claim 1, characterized in that: A limit block is set on the outer periphery of the lifting ear of the ladle, and limit plates matching the limit blocks are set on both sides of the placement plate. Two limit plates are set on each side of the placement plate, and the two limit plates are set at intervals. When the ladle is placed in the placement plate, the limit block is located between the two limit plates.

3. The metallurgical crane with a rotatable trolley according to claim 1, characterized in that: The main hook includes a first hook frame, a first movable pulley is provided on the top of the first hook frame, horizontal sliding holes are respectively opened at both ends of the first hook frame, the main hook is slidably connected in the sliding holes, and a horizontal push rod for adjusting the position of the main hook is also provided on the first hook frame.

4. The metallurgical crane with a rotatable trolley according to claim 1, characterized in that: The auxiliary hook comprises a second hook frame, a second movable pulley is arranged on the top of the second hook frame, an auxiliary hook is hinged on the bottom of the second hook frame, and an adjustment push rod is hinged between the auxiliary hook and the second hook frame.

5. The metallurgical crane with a rotatable trolley according to claim 1, characterized in that: Two rows of clamping wheels are installed on the top of the bottom plate of the mounting frame. Each row of clamping wheels corresponds to a main beam, and the clamping wheels fit the bottom of the main beam.

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