CN211254970U

CN211254970U - Cold rolling mill speed reducer demolishs and overhauls hoist

Info

Publication number: CN211254970U
Application number: CN201921666049.5U
Authority: CN
Inventors: 鲁嘉滨; 鲁继军; 王贤权; 郭迪; 刘禹
Original assignee: Angang Construction Group Co ltd
Current assignee: Angang Construction Group Co ltd
Priority date: 2019-09-30
Filing date: 2019-09-30
Publication date: 2020-08-14
Anticipated expiration: 2029-09-30

Abstract

The utility model relates to a cold rolling mill speed reducer overhauls, in particular to cold rolling mill speed reducer of cold rolling mill demolishs and overhauls hoist. Comprises an upper lifting lug, a vertical beam, a lower lifting lug, an upper cross beam, a lower beam and a counterweight; the lower beam is U-shaped and comprises a lower cross beam and 2 lower longitudinal beams, wherein the 2 lower longitudinal beams are vertically and fixedly connected to two ends of the lower cross beam and are provided with 4 lower lifting lugs in total, 1 lower longitudinal beam is fixedly connected with 2 lower lifting lugs, and the 4 lower lifting lugs are symmetrical in pairs; the vertical beam is vertically and fixedly connected to the lower cross beam, the upper cross beam is vertically and fixedly connected to the vertical beam, and the balance weight is fixedly connected to the end part of the upper cross beam; the intersection point of the centers of the 4 lower lifting lugs is on the central line of the upper lifting lug, and the central line of the upper lifting lug is coincided with the central line of the lifting hook of the factory crane during working. The dismounting and mounting of the rolling mill speed reducer of the cold rolling mill can be efficiently completed, the factory crane is effectively utilized, the operation time is shortened, and the operation labor cost is reduced.

Description

Cold rolling mill speed reducer demolishs and overhauls hoist

Technical Field

The utility model relates to a cold rolling mill speed reducer overhauls, in particular to cold rolling mill speed reducer of cold rolling mill demolishs and overhauls hoist.

Background

At present, large-scale air ducts in cold rolling mills are generally arranged above rolling mill speed reducers, the dismantling and installation operation space during the maintenance of the speed reducers is limited, the service efficiency of tools and tools is reduced, the rolling mill speed reducers in the cold rolling mills can only be pried up by a crowbar when being maintained, then the upper covers of the speed reducers are padded up to a certain height by a method of laying cushion blocks, finally, through the matching of a crane and a chain crane, the box bodies and parts of the speed reducers can be dismantled and transported backwards, and the repaired parts can be slowly installed in place by the matching of the crane and the chain crane during the reinstallation.

The following disadvantages exist: 1. the operation method is clumsy; 2. the operation time is long; 3. the utilization rate of the machine tool is low; 4. the labor intensity of the operating personnel is high.

Disclosure of Invention

In order to overcome the defects of the prior art, the utility model provides a cold rolling mill speed reducer demolishs and overhauls hoist. The dismounting and mounting of the rolling mill speed reducer of the cold rolling mill can be efficiently completed, the factory crane is effectively utilized, the operation time is shortened, and the operation labor cost is reduced.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a dismounting and overhauling lifting appliance for a rolling mill speed reducer of a cold rolling mill comprises an upper lifting lug, a vertical beam, a lower lifting lug, an upper cross beam, a lower beam and a balance weight; the lower beam is U-shaped and comprises a lower cross beam and 2 lower longitudinal beams, wherein the 2 lower longitudinal beams are vertically and fixedly connected to two ends of the lower cross beam and are provided with 4 lower lifting lugs in total, 1 lower longitudinal beam is fixedly connected with 2 lower lifting lugs, and the 4 lower lifting lugs are symmetrical in pairs; the vertical beam is vertically and fixedly connected to the lower cross beam, the upper cross beam is vertically and fixedly connected to the vertical beam, and the balance weight is fixedly connected to the end part of the upper cross beam; the intersection point of the centers of the 4 lower lifting lugs is on the central line of the upper lifting lug, and the central line of the upper lifting lug is coincided with the central line of the lifting hook of the factory crane during working.

Still include the diagonal draw bar, diagonal draw bar one end links to each other with the bottom end rail, and the other end links to each other with erecting the roof beam.

The beam structure further comprises reinforcing rib plates, wherein one ends of the reinforcing rib plates are fixedly connected to the vertical beams, and the other ends of the reinforcing rib plates are fixedly connected to the upper cross beam.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model is provided with an upper lifting lug and a lower lifting lug, the intersection point of the centers of 4 lower lifting lugs is on the central line of the upper lifting lug, and the central line of the upper lifting lug is coincided with the central line of the factory crane lifting hook during working; the speed reducer can be lifted out only through a factory crane, so that the dismounting and mounting time of the speed reducer is effectively shortened, and the labor intensity of operating personnel is reduced.

2. Because the vertical distance between the height that the speed reducer top lid was filled up and the wind pipeline is little when normally dismantling, design into the U type with the hoist underbeam, utilize the speed reducer box from taking the lug to hoist to settle four lugs and assist the hoist and mount, solved the not enough problem of installation operating space.

Drawings

FIG. 1 is a front view of the present invention;

FIG. 2 is a schematic side view of the structure of the present invention;

FIG. 3 is a schematic plan view of the present invention;

FIG. 4 is a cross-sectional view of the vertical and lower beams of the present invention;

fig. 5 is a schematic view of the structure of the lifting lug of the present invention;

fig. 6 is a schematic view of the working state of the present invention.

In the figure: 1-upper lifting lug 2-vertical beam 3-lower lifting lug 4-upper cross beam 5-lower beam 51-lower cross beam 52-lower longitudinal beam 6-counterweight 7-intersection point of centers of 4 lower lifting lugs 8-central line of upper lifting lug 9-diagonal brace 10-reinforcing rib plate 11-factory building crane 12-speed reducer 13-wind pipeline

Detailed Description

The following description of the embodiments of the present invention will be made with reference to the accompanying drawings:

example (b):

as shown in fig. 1-5, a dismounting and overhauling lifting appliance for a rolling mill reducer of a cold rolling mill plant comprises an upper lifting lug 1, a vertical beam 2, a lower lifting lug 3, an upper cross beam 4, a lower beam 5, a balance weight 6, a diagonal brace 9 and a reinforcing rib plate 10.

The lower beam 5 is U-shaped and comprises a lower cross beam 51 and 2 lower longitudinal beams 52, the lower cross beam 51 and the 2 lower longitudinal beams 52 are all made of H-shaped steel, and the 2 lower longitudinal beams 52 are vertically welded at two ends of the lower cross beam 51.

Totally, 4 lower lifting lugs 3 are arranged, 2 lower lifting lugs 3 are welded on 1 lower longitudinal beam 52, and the 4 lower lifting lugs 3 are symmetrical in pairs.

The vertical beam 2 is made of H-shaped steel, the vertical beam 2 is vertically welded in the middle of the lower cross beam 51, one end of the upper cross beam 4 is vertically welded on the vertical beam 2, and the counterweight 6 is fixedly connected at the end part of the upper cross beam 4. The diagonal draw bars 9 are symmetrically welded at the bottom of the vertical beam 2, one end of each diagonal draw bar 9 is welded with the lower cross beam 51, and the other end of each diagonal draw bar 9 is welded with the vertical beam 2, so that the effect of reinforcing and supporting is achieved. The reinforcing rib plate 10 is vertically welded at two ends of the top of the vertical beam 2, one end of the reinforcing rib plate 10 is welded on the vertical beam 2, and the other end is welded on the upper cross beam 4.

The intersection point 7 of the centers of the 4 lower lifting lugs is arranged on the central line 8 of the upper lifting lug, and the central line 8 of the upper lifting lug is coincided with the central line of the lifting hook of the factory crane during working.

As shown in fig. 6, because the vertical distance between the padded height of the top cover of the speed reducer 12 and the air duct 13 is small during normal disassembly, the upper end cover of the speed reducer can only be pried up by a crowbar during maintenance of the rolling mill speed reducer 12 in the previous cold rolling mill, then the upper cover of the speed reducer is padded up by a certain height by a method of laying a cushion block, and finally the box body and the parts of the speed reducer 12 can be disassembled and transported out through the cooperation of a crane and a chain crane, and the repaired parts can be slowly installed in place through the cooperation of the crane and the chain crane during reinstallation.

The utility model discloses design into the U type with underbeam 5, utilize 11 boxes of speed reducer to hoist from taking the lug to settle four supplementary hoists of lug, solved the not enough problem in installation operation space, only through factory building crane 11 alright hang out speed reducer 12.

The utility model discloses dismantling, installing of cold rolling mill speed reducer of completion that can be efficient effectively utilizes factory crane 11, reduces the activity duration, reduces the operation cost of labor.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A dismounting and overhauling lifting appliance for a rolling mill speed reducer of a cold rolling mill is characterized by comprising an upper lifting lug, a vertical beam, a lower lifting lug, an upper cross beam, a lower beam and a balance weight; the lower beam is U-shaped and comprises a lower cross beam and 2 lower longitudinal beams, wherein the 2 lower longitudinal beams are vertically and fixedly connected to two ends of the lower cross beam and are provided with 4 lower lifting lugs in total, 1 lower longitudinal beam is fixedly connected with 2 lower lifting lugs, and the 4 lower lifting lugs are symmetrical in pairs; the vertical beam is vertically and fixedly connected to the lower cross beam, the upper cross beam is vertically and fixedly connected to the vertical beam, and the balance weight is fixedly connected to the end part of the upper cross beam; the intersection point of the centers of the 4 lower lifting lugs is on the central line of the upper lifting lug, and the central line of the upper lifting lug is coincided with the central line of the lifting hook of the factory crane during working.

2. The dismounting and overhauling lifting appliance of the rolling mill speed reducer of the cold rolling plant as recited in claim 1, further comprising a diagonal brace, wherein one end of the diagonal brace is connected with the lower cross beam, and the other end of the diagonal brace is connected with the vertical beam.

3. The disassembly and overhaul lifting appliance of the rolling mill speed reducer of the cold rolling mill plant according to claim 1, further comprising reinforcing rib plates, wherein one ends of the reinforcing rib plates are fixedly connected to the vertical beams, and the other ends of the reinforcing rib plates are fixedly connected to the upper cross beams.