CN110759232A - A kind of hoisting tool and hoisting method for step plate of lower support roll of four-high rolling mill - Google Patents

Abstract

The invention discloses a lower supporting roller stepped plate hoisting tool of a four-roller type rolling mill, which comprises a rolling mill frame, wherein a lower supporting roller transverse moving roller way is arranged at the lower part of the rolling mill frame; lifting lugs are symmetrically arranged on the left side and the right side of the middle part of the lifting beam, and the bottoms of the left end and the right end of the lifting beam are respectively fixedly connected with one support frame; the traveling wheels are matched with the lower support roller transverse moving roller way and are arranged at the bottom of the support frame. The invention also discloses a hoisting method of the hoisting tool for the lower supporting roller step plate of the four-high rolling mill. The invention aims at the technical problem that the lower support roller step plate of the existing four-roller type rolling mill is inconvenient to disassemble and assemble, and has short operation time, high efficiency and good safety.

Description

A kind of hoisting tool and hoisting method for step plate of lower support roll of four-high rolling mill

technical field

The invention belongs to the field of machinery, and in particular relates to a hoisting tool and a hoisting method for a stepped plate of a lower support roll of a four-high rolling mill.

Background technique

The lower support roller stepped plate of the four-high rolling mill needs to be removed and replaced frequently during maintenance. Because it is in the rolling mill frame, the crane cannot be directly hoisted, and there is no convenient place to hang the wire rope hoist in the frame. It is extremely difficult and labor-intensive to remove the hoisting and move out the lower support roller ladder plate. In addition, in the dismantling or installation of the lower support roller stepped plate of the four-high rolling mill, when the lower support roller stepped plate is removed or installed, due to the narrow position of the construction in the rolling mill stand, the lower support roller stepped plate is heavy and cannot be installed. Affected by factors such as manual handling and installation, and the inability to lift external vehicles, the traditional method is basically multi-point hanging hoist for installation, which takes a long time to operate, is safe for operators, has low efficiency, and has high safety risks.

SUMMARY OF THE INVENTION

Aiming at the technical problem of inconvenient disassembly and installation of the stepped plate of the lower support roll of the four-high rolling mill in the background art, the present invention provides a hoisting tool and a lifting method for the stepped plate of the lower support roll of the four-high rolling mill, which effectively solves the problem of the four-high rolling mill. The dismantling and hoisting problems in the installation and construction of the stepped plate of the lower support roll of the rolling mill have short operation time, high efficiency and good safety.

The technical scheme that the present invention solves the technical problem is as follows:

The invention is a four-high rolling mill lower support roller stepped plate hoisting tool, the four-high rolling mill includes a rolling mill stand, and a lower support roller traverse roller table is arranged at the lower part of the rolling mill stand, and is characterized in that the hoisting tool includes: A hanging beam, a support frame and a traveling wheel; the middle part of the hanging beam is symmetrically provided with lifting ears on the left and right sides, and the bottoms of the left and right ends are respectively fixedly connected to one of the supporting frames; the traveling wheel and the lower support roller traverse the roller table Fit and set at the bottom of the support frame.

As a further improvement of the technical solution of the present invention, the hanging beam and the support frame are made of channel steel and/or H-shaped steel.

As a further improvement of the technical solution of the present invention, the support frame is in the shape of a triangle, which includes two support columns and a bottom beam, the tops of the two support columns are welded and fixed to the bottom of the hanging beam, and the bottom of the two support columns They are respectively welded and fixed with the upper surface of the bottom beam, and the left and right ends of the bottom of the bottom beam are respectively provided with one of the traveling wheels.

As a further improvement of the technical solution of the present invention, a support beam is welded in the middle of the two support columns of each support frame; a connecting beam is welded between the bottom beam and the other bottom beam.

Another technical solution of the present invention to solve the technical problem is:

The present invention is a hoisting method for hoisting tooling for a stepped plate of a lower support roll of a four-roll mill, which is characterized in that it includes the following steps:

1), first export the work roll and the lower backup roll of the four-high mill;

2), remove other components such as the upper cover plate and bolts of the lower support roll stepped plate of the four-high mill;

3), place the traveling wheel of the hoisting tool for the lower support roller step plate of the four-high rolling mill described in the above technical scheme on the lower support roller traverse track, then set the lifting device on the lifting lug, and then move the tool to the The position of the lower support roller step plate in the rolling mill stand, use the lifting device to lift the lower support roller step plate;

4), traverse the tooling that hangs the lower support roller stepped plate to the outside of the rolling mill stand, and use the hook of the traveling vehicle to hoist the lower support roller stepped plate and transport it out;

5) The process of reassembling the new lower support roller stepped plate is the opposite of the above steps.

As a further improvement of the technical solution of the present invention, the lifting device is a chain hoist.

Compared with the prior art, the hoisting tool for the stepped plate of the lower support roller of the four-high rolling mill of the present invention is simple and practical in structure, quick in manufacture, convenient in operation, and reliable and safe in operation. At the same time, the hoisting method of the hoisting tool for the lower support roller stepped plate of the four-high rolling mill can shorten the operation time and achieve the purpose of quickly, safely and efficiently removing and installing the lower supporting roller stepped plate.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments:

Fig. 1 is the structural schematic diagram of the hoisting tooling for the stepped plate of the lower support roller of the four-high rolling mill according to the present invention;

Fig. 2 is a schematic diagram of a hoisting method for hoisting a step plate hoisting tool for a lower support roller of a four-high rolling mill according to the present invention;

In the figure: 1. Hanging beam 2. Supporting frame 21. Supporting column 22. Bottom beam 23. Supporting beam 24. Connecting beam 3. Lifting lug 4. Walking wheel 5. Lower support roller traverse track 6. Rolling mill stand 7. Lower support roller ladder plate 8. Lifting device 9. Hook.

Detailed ways

Example 1:

As shown in Figures 1 and 2, the present invention is a four-high rolling mill lower support roller stepped plate hoisting tool, the four-high rolling mill includes a rolling mill stand 6, and the lower part of the rolling mill stand 6 is provided with a lower support roll traverse roller table 5. It is characterized in that the hoisting tooling comprises a hoisting beam 1, a support frame 2 and a traveling wheel 4; the left and right sides of the middle of the hoisting beam 1 are symmetrically provided with lifting lugs 3, and the bottoms of the left and right ends are respectively fixedly connected to a The supporting frame 2; the traveling wheel 4 is adapted to the lower supporting roller traverse roller table 5 and is arranged at the bottom of the supporting frame 2.

In this embodiment, the hanging beam 1 and the support frame 2 are made of channel steel and/or H-shaped steel.

In this embodiment, the support frame 2 is in the shape of a triangle, and includes two support columns 21 and a bottom beam 22. The tops of the two support columns 21 are welded and fixed to the bottom of the hanging beam 1, and the two support columns 21 The bottom of the bottom beam 22 is respectively welded and fixed with the upper surface of the bottom beam 22. The left and right ends of the bottom beam 22 are respectively provided with a described traveling wheel 4. The traveling wheel 4 can also be provided with a locking device for locking the traveling wheel. 4. Through the arrangement of the support frame 2, the support of the support frame 2 at both ends of the hanging beam 1 is made more stable.

In this embodiment, support beams 23 are welded to the middle of the two support columns 21 of each support frame 2 ; The beam 24 makes the hoisting tool more stable.

Example 2:

The present invention is a hoisting method for hoisting tooling for a stepped plate of a lower support roll of a four-roll mill, which is characterized in that it includes the following steps:

1. First export the work rolls and lower backup rolls of the four-high mill;

2. Remove other components such as the upper cover plate and bolts of the lower support roller step plate 7 of the four-high rolling mill;

3. Place the traveling wheel 4 of the step plate hoisting tool for the lower support roller of the four-high rolling mill in the above-mentioned embodiment 1 on the lower support roller traverse track 5, which is similar to the train wheel placed on the track, and then set on the lifting lug 3. Lifting device 8, and then move the tooling to the position of the lower support roller step plate 7 in the rolling mill stand 6, and use the lifting device 8 to hoist the lower support roller step plate 7;

4. Move the tooling on which the lower support roller stepped plate 7 is hung to the outside of the rolling mill stand 6, and use the crane hook 9 to lift the lower support roller stepped plate 7 and transport it out;

5. The process of refitting the new lower support roller stepped plate 7 is the opposite of the above steps.

In this embodiment, the lifting device 8 is a chain hoist.

The above are only preferred embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be Included within the scope of protection of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope defined by the claims.

Claims (6)

1. A step plate hoisting tool for lower support rollers of a four-roll rolling mill, the four-roll rolling mill comprises a rolling mill stand (6), and the lower part of the rolling mill stand (6) is provided with a lower support roller traversing roller table (5), It is characterized in that the hoisting tooling comprises a hoisting beam (1), a support frame (2) and a traveling wheel (4); the middle part of the hoisting beam (1) is symmetrically provided with lifting lugs (3) on the left and right sides, and the left and right sides thereof are symmetrically arranged. The bottoms of the two ends are respectively fixedly connected to a support frame (2); the traveling wheels (4) are adapted to the lower support roller traverse roller table (5) and are arranged at the bottom of the support frame (2). 2. A four-high rolling mill lower support roller stepped plate hoisting tool according to claim 1, wherein the hanging beam (1) and the support frame (2) are made of channel steel and/or H-beam . 3. A four-high rolling mill lower support roller stepped plate hoisting tool according to claim 1 or 2, wherein the support frame (2) is in a triangular shape, and comprises two support columns (21), Bottom beam (22), the tops of the two supporting columns (21) are welded and fixed to the bottom of the hanging beam (1), and the bottoms of the two supporting columns (21) are respectively welded and fixed with the upper surface of the bottom beam (22) and the left and right ends of the bottom of the bottom beam (22) are respectively provided with one of the traveling wheels (4). 4. A four-high rolling mill lower support roller stepped plate hoisting tooling according to claim 3 is characterized in that, the middle of the two support columns (21) of each support frame (2) is welded and provided with support beams ( 23); a connecting beam (24) is welded between the bottom beam (22) and the other bottom beam (22). 5. A hoisting method for hoisting tooling for supporting roller stepped plate under a four-roll mill, is characterized in that, comprises the following steps: 1), first export the work roll and the lower backup roll of the four-high mill; 2), remove other components such as the upper cover plate and bolts of the lower support roller stepped plate (7) of the four-high rolling mill; 3), place the traveling wheel (4) of the step plate hoisting tool for the lower support roller of the four-high rolling mill according to any one of claims 1-4 on the traverse track (5) of the lower support roller, and then place it on the lifting lug (3). ), a lifting device (8) is set on the upper part of the rolling mill frame (6), and then the tooling is moved to the position of the lower support roller step plate (7) in the rolling mill stand (6), and the lower support roller step plate (7) is hoisted by the lifting device (8). ; 4) Move the tool on which the lower support roller step plate (7) is hung to the outside of the rolling mill stand (6), and use the crane hook (9) to hoist the lower support roller step plate (7) and transport it out. ; 5) The process of reinstalling the new lower support roller stepped plate (7) is the opposite of the above steps. 6 . The hoisting method for hoisting the step plate of the lower support roller of a four-high rolling mill according to claim 5 , wherein the lifting device ( 8 ) is a chain hoist. 7 .

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