Lifting appliance device for improving replacement efficiency of converter steel car

Abstract

The utility model relates to a lifting appliance device for improving the replacement efficiency of a converter steel car, and belongs to the technical field of continuous casting equipment in the metallurgical industry. According to the technical scheme, the distance between two lifting lug holes (16) at the two ends of a main beam (4) is matched with the distance between a first main hook and a second main hook on an upper steel span and refining span crown block; the two sides of the center of the main beam (4) are respectively provided with a vertically-downward lifting fork (9), and the lifting appliance lifting hook (6) freely rotates in the lifting hook rotating hole (12). The lifting appliance has the beneficial effects that a double-main-hook structure on an upper steel span crown block and a refining span crown block is fully utilized, a special lifting appliance device is used for lifting the steel vehicle, a ladle turning mechanism and an auxiliary hook locking device on an auxiliary hook of the upper steel span crown block and the refining span crown block do not need to be disassembled, and a steel wire rope and a hook do not need to be manually transferred between the two crown blocks; the steel car operation replacement efficiency is improved, and the labor intensity of workers is reduced.

Description

Technical Field

[0001] This utility model relates to a lifting device for improving the efficiency of changing converter steel cars, belonging to the technical field of continuous casting equipment in the metallurgical industry. Background Technology

[0002] Steel cars are tools used in the metallurgical industry to carry and transport steel ladles. When a steel car under the converter in a steelmaking plant experiences equipment failure or needs to be taken offline for routine maintenance, it must be lifted using an overhead crane in the converter workshop. Since the steel car replacement location is in the upper steel span (upper steel crane span) and the maintenance location is in the refining span (refining crane span), the steel car needs to be placed across the spans after being taken offline, and then moved from the upper steel span to the refining span. Previously, existing technology required using the auxiliary hooks of the upper steel span and refining span overhead cranes to lift the steel car using four steel wire ropes. This required dismantling the ladle-turning mechanism on the auxiliary hooks of the aforementioned two overhead cranes; furthermore, the lifting route for the steel car was narrow, requiring the steel car to be rotated before lifting, and the locking devices on the auxiliary hooks of the aforementioned two overhead cranes also needed to be removed. Because there are four steel wire ropes used for lifting the steel car, manual handling of the wire ropes on the aforementioned two overhead cranes was also required, which was extremely time-consuming and labor-intensive, and prolonged the steel car replacement time.

[0003] Due to the requirements of the smelting process, the main hooks on the overhead cranes of the upper steel span and refining span are both double-hook structures. The two main hooks on the crane are main hook one and main hook two with identical structures. The distance between main hook one and main hook two is fixed, and they are set on the same main hook crossbeam. Because of the double-hook structure, no one has thought of using the main hooks on the overhead cranes of the upper steel span and refining span when hoisting steel cars. Utility Model Content

[0004] The purpose of this invention is to provide a lifting device that improves the efficiency of changing converter steel cars. It fully utilizes the double main hook structure on the upper steel span and refining span overhead cranes, using a specialized lifting device to lift the steel cars without removing the ladle-turning mechanism and locking device on the auxiliary hooks of the upper steel span and refining span overhead cranes. Furthermore, this lifting device can be moved along with the wire rope on the steel car. Only the double main hook structures on the upper steel span and refining span overhead cranes need to be sequentially connected to the lifting device, eliminating the need for manual handling of the wire rope and hooks between the two overhead cranes. This improves the efficiency of steel car operation and changing, reduces labor intensity, minimizes downtime, and solves the aforementioned problems in the prior art.

[0005] The technical solution of this utility model is:

[0006] A lifting device for improving the efficiency of converter steel car replacement includes a main beam, a lifting hook, lifting forks, and lifting lugs. The main beam has vertically upward-facing lifting lugs at both ends, each lug having a lifting lug hole. The distance between the two lifting lug holes at both ends of the main beam matches the distance between main hook one and main hook two on the overhead cranes of the upper steel span and refining span. Vertically downward-facing lifting forks are respectively installed on both sides of the center of the main beam, with a support plate between the two parallel lifting forks. The support plate has a hook rotation hole at its center. The top of the lifting hook is a hook shaft, and the top of the hook shaft is a shaft boss. The hook shaft passes through the hook rotation hole, and the shaft boss at the top of the hook shaft is located on the support plate. The outer diameter of the shaft boss is larger than the inner diameter of the hook rotation hole, allowing the lifting hook to rotate freely within the hook rotation hole.

[0007] The lifting lug includes an outer lifting lug plate, an inner lifting lug plate, and a pin. The outer and inner lifting lug plates are arranged parallel to each other at the ends of the main beam. The bottoms of the outer and inner lifting lug plates are welded to the main beam, and the tops of the outer and inner lifting lug plates are connected by a pin. A lifting lug hole is formed between the outer and inner lifting lug plates, the pin, and the main beam.

[0008] The lifting fork is fixed to the main beam by fasteners.

[0009] The inner side lug plate is provided with a lug reinforcing rib plate between it and the main beam.

[0010] The main beam is equipped with a main beam reinforcing rib.

[0011] This utility model also includes a storage seat, which consists of a base and support frames at both ends. The top of the support frame is a frame structure with a hollow center. The storage frame is welded from I-beams. The main beam has protruding support seats on both sides and stops at the bottom of both sides. The main beam is placed on the storage seat, and the stops on both sides are inserted into the hollow tops of the two support frames of the storage seat. The protruding support seats on both sides of the main beam are precisely locked onto the top frames of the two support frames of the storage seat.

[0012] Using this invention, four steel wire ropes are connected to the four corners of the steel car, and then the steel wire ropes are hung on the lifting hooks of the lifting device. The main hook one and main hook two of the upper steel gantry crane are hooked into the lifting lug holes on both sides of the main beam to lift the steel car and move it to the junction with the refining gantry crane. The main hook one and main hook two of the refining gantry crane are hooked into the lifting lug holes on both sides of the main beam to lift the steel car and move it to the maintenance station.

[0013] The beneficial effects of this utility model are as follows: It makes full use of the double main hook structure on the upper steel span and refining span overhead cranes, and uses a special lifting device to lift the steel car without removing the flipping mechanism and the secondary hook locking device on the secondary hook of the upper steel span and refining span overhead cranes. At the same time, this lifting device can be placed on the steel car together with the wire rope and moved. It is only necessary to control the double main hook structure on the upper steel span and refining span overhead cranes to connect the lifting device respectively. There is no need for manual transfer of wire rope and hook between the two overhead cranes, which improves the efficiency of steel car operation and replacement, reduces the labor intensity of personnel, and reduces the time occupied. Attached Figure Description

[0014] Figure 1 This is a front view of an embodiment of the present utility model;

[0015] Figure 2 This is a side view of an embodiment of the present utility model;

[0016] Figure 3 This is a front view of the storage base according to an embodiment of the present utility model;

[0017] Figure 4 This is a side view of the storage base according to an embodiment of the present utility model;

[0018] In the diagram: Fastener 1, Outer lifting lug plate 2, Lifting lug reinforcing rib plate 3, Main beam 4, Main beam reinforcing rib plate 5, Lifting hook 6, Stop 7, Support seat 8, Lifting fork 9, Pin 10, Inner lifting lug plate 11, Lifting hook rotation hole 12, Support frame 13, Base 14, Lifting lug 15, Lifting lug hole 16, Rotary shaft boss 17, Support plate 18, Lifting hook rotating shaft 19. Detailed Implementation

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

[0020] A lifting device for improving the efficiency of converter steel car replacement includes a main beam 4, lifting hooks 6, lifting forks 9, and lifting lugs 15. Lifting lugs 15 are vertically upwardly positioned at both ends of the main beam 4, and each lifting lug 15 has lifting lug holes 16. The distance between the two lifting lug holes 16 at both ends of the main beam 4 matches the distance between main hook one and main hook two on the overhead cranes of the upper steel span and refining span. Vertically downward lifting forks 9 are respectively installed on both sides of the center of the main beam 4, with two parallel lifting forks... A support plate 18 is provided between 9, and a hook rotation hole 12 is provided in the center of the support plate 18; the top of the lifting hook 6 is a hook shaft 19, and the top of the hook shaft 19 is a shaft boss 17. The hook shaft 19 of the lifting hook 6 passes through the hook rotation hole 12. The shaft boss 17 at the top of the hook shaft 19 is located on the support plate 18. The outer diameter of the shaft boss 17 is larger than the inner diameter of the hook rotation hole 12. The lifting hook 6 can rotate freely in the hook rotation hole 12.

[0021] The lifting lug 15 includes an outer lifting lug plate 2, an inner lifting lug plate 11, and a pin 10. The outer lifting lug plate 2 and the inner lifting lug plate 11 are arranged parallel to each other at the ends of the main beam 4. The bottoms of the outer lifting lug plate 2 and the inner lifting lug plate 11 are welded to the main beam 4, and the tops of the outer lifting lug plate 2 and the inner lifting lug plate 11 are connected by the pin 10. A lifting lug hole 16 is formed between the outer lifting lug plate 2, the inner lifting lug plate 11, the pin 10, and the main beam 4.

[0022] The lifting fork 9 is fixed to the main beam 4 by fastener 1.

[0023] A lifting lug reinforcing rib plate 3 is provided between the inner lifting lug plate 11 and the main beam 4.

[0024] The main beam 4 is equipped with a main beam reinforcing rib plate 5 inside.

[0025] This utility model also includes a storage seat, which consists of a base 14 and support frames 13 at both ends. The top of the support frame 13 is a frame structure and the center is hollow. The storage frame is welded from I-beams. The main beam 4 has protruding support seats 8 on both sides and stop seats 7 at the bottom of both sides. The main beam 4 is placed on the storage seat, and the stop seats 7 on both sides are inserted into the top hollow of the two support frames 13 of the storage seat. The protruding support seats 8 on both sides of the main beam 4 are precisely locked on the top frame of the two support frames 13 of the storage seat.

[0026] In a practical application embodiment, the lifting hook 6 is a 125T hook. The overall lifting device is 5160mm high, 5120mm long, and 500mm wide. Reinforcing ribs 5, 20mm thick, are welded at intervals on both sides of the main beam 4, spaced 620mm apart, to ensure the strength of the main beam 4. The main beam 4 is 5120mm long, 500mm wide, and 800mm high.

[0027] The lifting lug 15 is welded from an outer lifting lug plate 2, an inner lifting lug plate 11, a pin 10, and a lifting lug reinforcing rib plate 3. It is used for hooking the main hook of the overhead crane. The center distance between the two lifting lugs 15 is 4700mm.

[0028] The upper end of the lifting hook 6 is installed in the hook rotation hole 12, enabling the lifting hook 6 to rotate. The hook rotation hole 12 is located at the center of the support plate 18 and is fixed to the center below the main beam 4 by the lifting forks 9 on both sides. The rated load of the lifting hook 6 is 125T, and its height from the lower plane of the main beam 4 is 1675mm. The center of the lifting hook 6 is 975mm from the center of the hook rotation hole 12.

[0029] The stop 7 and support 8 are welded to the bottom of the main beam 4. The center distance between the inner sides of the stop 7 on both sides of the main beam 4 is 3120mm, and the center distance between the support 8 on both sides is 4120mm, so that they can be accurately and stably placed on the storage seat.

[0030] The storage base has a bottom dimension of 2500mm × 4000mm, a height of 2440mm, and a top dimension of 1250mm × 4000mm. It is entirely constructed of welded I-beams, each with a height of 180mm, a width of 94mm, and a thickness of 6.5mm.

[0031] Lifting lugs 15 are welded to both sides above the main beam 4, and lifting lug reinforcing plates 3 are welded to them to ensure the connection strength between the lifting lugs 15 and the main beam 4, so that the main hooks one and two of the overhead cranes for the upper steel span and refining span can be connected to the lifting lugs 15 on both sides respectively. The lifting hook 6 of the lifting device is rotatable. The stop 7 and the support 8 are welded to both sides below the main beam 4, so that the main beam 3 can be stably placed on the storage seat.

[0032] The process of using this utility model is as follows: Connect the four corners of the steel car with four steel wire ropes, then hang the steel wire ropes on the lifting hooks of this utility model. Then hook the main hook one and main hook two of the upper steel gantry crane into the lifting lug holes 16 on both sides of the main beam 4. The upper steel gantry crane lifts the steel car using this utility model and moves it to the junction with the refining gantry crane. The steel car and lifting device are then lowered. Then, hook the main hook one and main hook two of the refining gantry crane into the lifting lug holes 16 on both sides of the main beam 4. The refining gantry crane lifts the steel car using this utility model and moves it to the maintenance station.

[0033] When not using the lifting device of this utility model, it can be placed on the storage seat. The stops 7 on both sides of the main beam 4 are respectively inserted into the top hollow of the two support frames 13 of the storage seat, and the protruding support seats 8 on both sides of the main beam 4 are just stuck on the top frame of the two support frames 13 of the storage seat.

Claims

1. A lifting device for improving the efficiency of converter steel car replacement, characterized in that: It includes a main beam (4), a lifting hook (6), a lifting fork (9), and lifting lugs (15); the two ends of the main beam (4) are respectively provided with vertically upward lifting lugs (15), and the lifting lugs (15) are provided with lifting lug holes (16). The distance between the two lifting lug holes (16) at both ends of the main beam (4) matches the distance between the first and second main hooks on the upper steel span and refining span overhead crane; the two sides of the center of the main beam (4) are respectively provided with vertically downward lifting forks (9), and a support plate (18) is provided between the two parallel lifting forks (9). The support plate (18) has a hook rotation hole (12) at its center; the top of the lifting hook (6) is a hook shaft (19), and the top of the hook shaft (19) is a shaft boss (17). The hook shaft (19) of the lifting hook (6) passes through the hook rotation hole (12). The shaft boss (17) at the top of the hook shaft (19) is located on the support plate (18). The outer diameter of the shaft boss (17) is larger than the inner diameter of the hook rotation hole (12). The lifting hook (6) can rotate freely in the hook rotation hole (12).

2. The lifting device for improving the efficiency of converter steel car replacement according to claim 1, characterized in that: The lifting lug (15) includes an outer lifting lug plate (2), an inner lifting lug plate (11), and a pin (10). The outer lifting lug plate (2) and the inner lifting lug plate (11) are arranged parallel to each other at the ends of the main beam (4). The bottoms of the outer lifting lug plate (2) and the inner lifting lug plate (11) are welded to the main beam (4) respectively. The tops of the outer lifting lug plate (2) and the inner lifting lug plate (11) are connected by the pin (10). A lifting lug hole (16) is formed between the outer lifting lug plate (2), the inner lifting lug plate (11), the pin (10), and the main beam (4).

3. A lifting device for improving the efficiency of converter steel car replacement according to claim 1 or 2, characterized in that: The lifting fork (9) is fixed to the main beam (4) by fasteners (1).

4. The lifting device for improving the efficiency of converter steel car replacement according to claim 2, characterized in that: A lifting lug reinforcing rib plate (3) is provided between the inner lifting lug plate (11) and the main beam (4).

5. A lifting device for improving the efficiency of converter steel car replacement according to claim 1 or 2, characterized in that: The main beam (4) is provided with a main beam reinforcing rib plate (5) inside.

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