阅读说明：本技术 一种四辊式轧机下支撑辊阶梯板吊装工装及吊装方法 (Hoisting tool and hoisting method for lower support roller stepped plate of four-roller type rolling mill ) 是由 涂俊魁 张婷婷 申家华 李力 赖正文 马冬冬 曹秀宏 于 2019-11-27 设计创作，主要内容包括：本发明公开了一种四辊式轧机下支撑辊阶梯板吊装工装,所述四辊式轧机包括轧机机架,轧机机架下部设置有下支撑辊横移辊道,其特点是,所述吊装工装包括吊梁、支撑架和行走车轮；所述吊梁的中部左右两侧对称设置有吊耳,其左右两端底部分别固定连接一个所述支撑架；所述行走车轮与下支撑辊横移辊道相适配并设置在支撑架的底部。本发明还公开了该四辊式轧机下支撑辊阶梯板吊装工装的吊装方法。本发明针对目前存在的四辊式轧机的下支撑辊阶梯板不方便拆卸及安装的技术问题,作业时间短,效率高,安全性好。(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.)

1. A four-high rolling mill lower support roll stepped plate hoisting tool comprises a rolling mill frame (6), wherein a lower support roll transverse moving roller way (5) is arranged at the lower part of the rolling mill frame (6), and the four-high rolling mill lower support roll stepped plate hoisting tool is characterized by comprising a hoisting beam (1), a support frame (2) and traveling wheels (4); lifting lugs (3) are symmetrically arranged on the left side and the right side of the middle part of the lifting beam (1), and the bottoms of the left end and the right end of the lifting beam are respectively fixedly connected with one support frame (2); the traveling wheels (4) are matched with the lower support roller transverse roller bed (5) and are arranged at the bottom of the support frame (2).

2. The lower support roll stepped plate hoisting tool of the four-high rolling mill as claimed in claim 1, wherein the hoisting beam (1) and the support frame (2) are made of channel steel and/or H-shaped steel.

3. The four-high rolling mill lower support roll step plate hoisting tool according to claim 1 or 2, characterized in that the support frame (2) is triangular and comprises 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), the bottoms of the two support columns (21) are respectively welded and fixed to the upper surface of the bottom beam (22), and the left end and the right end of the bottom beam (22) are respectively provided with one traveling wheel (4).

4. The lower supporting roll step plate hoisting tool of the four-high rolling mill as claimed in claim 3, wherein the middle parts of the two supporting upright columns (21) of each supporting frame (2) are welded with supporting beams (23); and a connecting cross beam (24) is welded between the bottom beam (22) and the other bottom beam (22).

5. A hoisting method of a hoisting tool for a stepped plate of a lower supporting roller of a four-roller rolling mill is characterized by comprising the following steps:

1) firstly, leading out a working roll and a lower supporting roll of the four-roll mill;

2) removing other parts such as an upper cover plate and bolts of a lower support roller step plate (7) of the four-high rolling mill;

3) placing a traveling wheel (4) of a lower support roller step plate hoisting tool of a four-high rolling mill as claimed in any one of claims 1 to 4 on a lower support roller transverse moving track (5), then arranging a lifting device (8) on a lifting lug (3), then moving the tool to the position of a lower support roller step plate (7) in a rolling mill frame (6), and hoisting the lower support roller step plate (7) by using the lifting device (8);

4) transversely moving the tool with the lower support roller step plate (7) hung on the tool to the outer side of the rolling mill frame (6), and hoisting the lower support roller step plate (7) by using a lifting hook (9) of a travelling crane to carry out the transportation;

5) and the procedure of reloading the new lower support roller step plate (7) is opposite to the above steps.

6. The hoisting method of the hoisting tool for the lower supporting roll stepped plate of the four-high rolling mill as claimed in claim 5, wherein the lifting device (8) is a chain block.

Technical Field

The invention belongs to the field of machinery, and particularly relates to a hoisting tool and a hoisting method for a lower supporting roller step plate of a four-roller type rolling mill.

Background

The four-high rolling mill lower support roller step plate needs to be frequently removed and replaced in maintenance, and the travelling crane cannot be directly hoisted due to the fact that in a rolling mill frame, a steel rope hoist is not conveniently hung in the frame at a position, the lower support roller step plate is removed and hoisted, and operation is extremely difficult, labor is wasted. In addition, in the dismounting or mounting construction of the lower support roller stepped plate of the four-roller type rolling mill, when the lower support roller stepped plate is dismounted or mounted, due to the fact that the construction is narrow and small in position in a rolling mill frame, the lower support roller stepped plate is heavy and cannot be manually carried and mounted, and external travelling cranes cannot be lifted and the like, the traditional method is basically implemented by hanging and mounting the hoists at multiple points, the operation time is long, operation and safety of operators are achieved, the efficiency is low, and the safety risk is high.

Disclosure of Invention

Aiming at the technical problem that a lower support roller step plate of a four-high rolling mill is inconvenient to disassemble and assemble in the background technology, the invention provides a lower support roller step plate hoisting tool and a hoisting method of the four-high rolling mill, which effectively solve the hoisting problems in the disassembling and assembling construction of the lower support roller step plate of the four-high rolling mill, and have the advantages of short operation time, high efficiency and good safety.

The technical scheme for solving the technical problem of the invention is as follows:

the invention relates to a hoisting tool for a lower supporting roller stepped plate 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.

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

As a further improvement of the technical scheme of the invention, the supporting frame is triangular and comprises two supporting stand columns and a bottom beam, the tops of the two supporting stand columns are welded and fixed at the bottom of the hanging beam, the bottoms of the two supporting stand columns are respectively welded and fixed with the upper surface of the bottom beam, and the left end and the right end of the bottom beam are respectively provided with one traveling wheel.

As a further improvement of the technical scheme of the invention, the middle parts of two supporting upright columns of each supporting frame are welded with supporting beams; and a connecting cross beam is welded between the bottom beam and the other bottom beam.

The other technical scheme for solving the technical problem of the invention is as follows:

the invention discloses a hoisting method of a hoisting tool for a stepped plate of a lower supporting roller of a four-roller rolling mill, which is characterized by comprising the following steps of:

1) firstly, leading out a working roll and a lower supporting roll of the four-roll mill;

2) removing other parts such as an upper cover plate and bolts of a lower support roller step plate of the four-high rolling mill;

3) placing traveling wheels of the lower supporting roller step plate hoisting tool of the four-high rolling mill in the technical scheme on a lower supporting roller transverse moving track, then arranging a lifting device on a lifting lug, moving the tool to the position of the lower supporting roller step plate in a rolling mill frame, and hoisting the lower supporting roller step plate by using the lifting device;

4) transversely moving the tool with the lower support roller step plate hung to the outer side of the rolling mill frame, and hanging the lower support roller step plate by using a lifting hook of a travelling crane to transport the lower support roller step plate out;

5) and the procedure of reloading the new lower support roller step plate is opposite to the above steps.

As a further improvement of the technical scheme of the invention, the lifting device is a chain block.

Compared with the prior art, the lower supporting roller stepped plate hoisting tool for the four-high rolling mill, disclosed by the invention, has the advantages of simple and practical structure, quickness in manufacturing, convenience in operation, and reliability and safety in operation. Meanwhile, the hoisting method of the hoisting tool for the lower support roller stepped plate of the four-roller rolling mill can shorten the operation time and achieve the purpose of quickly, safely and efficiently removing and installing the lower support roller stepped plate.

Drawings

The invention is further described with reference to the following figures and detailed description:

FIG. 1 is a schematic structural diagram of a lower support roll step plate hoisting tool of a four-high rolling mill, which is disclosed by the invention;

FIG. 2 is a schematic diagram of a hoisting method of the hoisting tool for the lower support roll step plate of the four-high rolling mill, which is disclosed by the invention;

in the figure: 1. the lifting beam 2, the supporting frame 21, the supporting upright post 22, the bottom beam 23 and the supporting beam 24 are connected with the cross beam 3, the lifting lug 4, the walking wheel 5, the lower supporting roll transverse moving track 6, the rolling mill frame 7, the lower supporting roll step plate 8, the lifting device 9 and the lifting hook.

Detailed Description