CN115476137A - Replacement method of main oil cylinder of reciprocating rolling mill - Google Patents
Replacement method of main oil cylinder of reciprocating rolling mill Download PDFInfo
- Publication number
- CN115476137A CN115476137A CN202210790064.0A CN202210790064A CN115476137A CN 115476137 A CN115476137 A CN 115476137A CN 202210790064 A CN202210790064 A CN 202210790064A CN 115476137 A CN115476137 A CN 115476137A
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- China
- Prior art keywords
- oil cylinder
- main oil
- rolling mill
- hand
- hoist
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/04—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B28/00—Maintaining rolls or rolling equipment in effective condition
Abstract
The invention discloses a method for replacing a main oil cylinder of a reciprocating rolling mill, which comprises the following operation steps: s10), placing H-shaped steel on a middle roller track of a rolling mill, and then respectively hanging a first hand-pulled hoist and a second hand-pulled hoist on the H-shaped steel; s20) detaching fastening screws of a main oil cylinder of the reciprocating rolling mill, correspondingly mounting lifting ring screws in the fastening screw holes respectively, tying a first hanging strip between the first hand-pull hoist and 2 lifting ring screws, and tying a second hanging strip between the second hand-pull hoist and the other 2 lifting ring screws; s30), the main oil cylinder is lifted from the main oil cylinder base by simultaneously operating the first hand-pulling block and the second hand-pulling block; s40), the lifted main oil cylinder is transported out of the reciprocating rolling mill by the main oil cylinder carrying trolley; the invention realizes convenient and fast replacement of the main oil cylinder, has simple structure of the used tool and convenient operation, effectively improves the maintenance operation safety of the main oil cylinder of the reciprocating rolling mill, and obviously improves the maintenance efficiency.
Description
Technical Field
The invention relates to a method for replacing a main oil cylinder of a rolling mill in the field of steel plate manufacturing, in particular to a method for replacing a main oil cylinder of a reciprocating rolling mill, which is particularly suitable for replacing the main oil cylinder of a six-roller reciprocating rolling mill.
Background
The six-roller reciprocating rolling mill is one of main devices of a steel plate production line, wherein the main oil cylinder is also an important device of the six-roller reciprocating rolling mill. The main oil cylinder needs to be replaced and maintained after being used for a long time, however, the weight of the main oil cylinder is about 7 tons as the main oil cylinder is arranged in the rolling mill, and the crown block cannot be directly lifted and transported; and the internal structure of the rolling mill is complicated, and the weight of the main oil cylinder is heavy, so that industrial accidents are easy to occur if the main oil cylinder is inclined to pull and hung. In addition, the market competition of the prior steel rolling industry is fierce, the order delivery time is required to be short, the existing main oil cylinder replacement and maintenance method needs to occupy longer time, and the maintenance efficiency is low.
Therefore, the applicant needs to find new technical solutions to solve the above technical problems.
Disclosure of Invention
In view of this, the invention aims to provide a method for replacing a master cylinder of a reciprocating rolling mill, which realizes convenient and fast replacement of the master cylinder, and the tool used in the method has a simple structure and is convenient to operate, and meanwhile, the safety of maintenance operation of the master cylinder of the reciprocating rolling mill is effectively improved, and the maintenance efficiency is obviously improved.
The technical scheme adopted by the invention is as follows:
a method for replacing a master cylinder of a reciprocating rolling mill, wherein the reciprocating rolling mill is respectively provided with a rolling mill intermediate roll track and a rolling mill support roll track, comprises the following operation steps:
s10), placing H-shaped steel on the rolling mill intermediate roll track, and then respectively hanging a first hand-pulled hoist and a second hand-pulled hoist on the H-shaped steel;
s20) after the fastening screws of the main oil cylinder of the reciprocating rolling mill are detached, hanging ring screws are correspondingly installed in the fastening screw holes respectively, a first hanging strip is tied between the first hand-pull hoist and 2 hanging ring screws, and a second hanging strip is tied between the second hand-pull hoist and the other 2 hanging ring screws;
s30), the main oil cylinder is lifted from the main oil cylinder base by simultaneously operating the first hand-pulling block and the second hand-pulling block;
s40), transporting the lifted main oil cylinder out of the interior of the reciprocating rolling mill by a main oil cylinder carrying trolley placed on a supporting roller track.
Preferably, after the step S40), the method further includes:
s50) transporting the main oil cylinder after maintenance and replacement into the reciprocating type rolling mill through a main oil cylinder carrying trolley placed on a support roller track, and then placing and installing the main oil cylinder after maintenance and replacement on a main oil cylinder base corresponding to the main oil cylinder by operating a first hand-pull hoist and a second hand-pull hoist, so that the main oil cylinder is convenient and fast to replace.
Preferably, the shuttle mill is a six-roll shuttle mill.
Preferably, in the step S10), the H-shaped steel frame is supported on the rolling mill intermediate roll rail as a cross member structure when the master cylinder is lifted in the step S30).
Preferably, the length of the H-shaped steel is 1000-1200mm, and the size model of the H-shaped steel is 100 x 100mm and is used for bearing the weight of the master cylinder.
Preferably, the loads of the first hoist and the second hoist are both 5 tons, and in the step S30), the first hoist and the second hoist are synchronously operated to hoist the master cylinder.
Preferably, the number of each lifting ring screw is 4, the model is M48, and the lifting ring screws are uniformly arranged in fastening screw holes of the main oil cylinder.
Preferably, the load of the sling is 3 tons, and the length is 2 meters.
Preferably, the main oil cylinder carrying trolley is provided with a guide wheel, a mandrel and an iron plate which are integrally installed and used for carrying the main oil cylinder.
Preferably, the number of the guide wheels is 4; each guide wheel is a roller bearing seat guide wheel, so that the roller bearing seat guide wheel is safe and reliable, and the main oil cylinder can bear the weight of the main oil cylinder.
After H-shaped steel is arranged on a rolling mill intermediate roll track frame, two chain blocks are hung on the H-shaped steel, then four fastening screws of a main oil cylinder are dismounted, lifting ring screws are arranged, finally a hanging belt is tied between the chain blocks and the lifting ring screws, and during actual work, the main oil cylinder is lifted up by operating the chain blocks and then is placed on a main oil cylinder carrying trolley to be carried out of the interior of the duplex rolling mill; finally, similarly, the repaired and replaced main oil cylinder is conveyed into the interior of the compound rolling mill by the main oil cylinder carrying trolley, and the main oil cylinder is placed and installed on the corresponding main oil cylinder base by operating the chain block, so that the main oil cylinder is conveniently and quickly replaced; and the tool used in the application has simple structure and convenient operation, effectively improves the maintenance operation safety of the master cylinder of the reciprocating rolling mill, obviously improves the maintenance efficiency, and is particularly suitable for replacing the master cylinder of the six-roller reciprocating rolling mill.
Drawings
FIG. 1 is a block diagram illustrating the replacement steps of the master cylinder of the reciprocating mill in accordance with the preferred embodiment of the present invention;
FIG. 2 is a schematic diagram of the structural state of the lifting process of the main oil cylinder of the reciprocating rolling mill in the embodiment of the invention;
fig. 3 is a schematic structural diagram of a process of carrying the master cylinder by the master cylinder carrying trolley according to the embodiment of the present invention (the carrying direction of the master cylinder 2 is shown by an arrow in the figure).
Detailed Description
The embodiment of the invention discloses a method for replacing a main oil cylinder of a reciprocating rolling mill, wherein the reciprocating rolling mill is respectively provided with a rolling mill middle roller track and a support roller track, and the method comprises the following operation steps: s10), placing H-shaped steel on a middle roller track of a rolling mill, and then respectively hanging a first chain block and a second chain block on the H-shaped steel; s20) after the fastening screws of the main oil cylinder of the reciprocating rolling mill are detached, hanging ring screws are correspondingly installed in the fastening screw holes respectively, a first hanging strip is tied between the first hand-pull hoist and 2 hanging ring screws, and a second hanging strip is tied between the second hand-pull hoist and the other 2 hanging ring screws; s30) lifting the main oil cylinder from the main oil cylinder base by simultaneously operating the first hand-pulling block and the second hand-pulling block; s40), the lifted master cylinder is transported out of the interior of the reciprocating rolling mill by the master cylinder carrying trolley placed on the supporting roller track.
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, shall fall within the protection scope of the present invention.
Referring to fig. 1, 2 and 3, a method for replacing a master cylinder of a reciprocating rolling mill is shown, preferably, in the present embodiment, the reciprocating rolling mill is a six-roller reciprocating rolling mill 1, and naturally, the present embodiment may also be used to replace master cylinders of other types of reciprocating rolling mills according to actual needs;
in the present embodiment, the six-roll reciprocating rolling mill 1 is provided with a rolling mill intermediate roll track 1a and a support roll track 1b, respectively, and includes the following operation steps:
s10), placing the H-section steel 11 on the rolling mill intermediate roll rail 1a (i.e.: the H-shaped steel frame 11 is placed on the rolling mill intermediate roll rail 1 a) as a cross beam structure when the master cylinder 2 is lifted in the step S30); then, a first hand-pulled hoist 12a and a second hand-pulled hoist 12b are respectively hung on the H-shaped steel 1 a; preferably, in the present embodiment, the length of the H-shaped steel 11 is 1000 to 1200mm, and particularly preferably 1100mm; the size model of the H-shaped steel 11 is selected from 100X 100mm and is used for bearing the weight of the main oil cylinder 2; the loads of the first hand-pulled hoist 12a and the second hand-pulled hoist 12b are both 5 tons;
s20), detaching fastening screws (with known structures and 4 in number) of a main oil cylinder 2 (with the weight of about 7 tons) of the six-roller reciprocating rolling mill 1, and correspondingly installing lifting ring screws 13 in the fastening screw holes respectively, wherein preferably, in the embodiment, the number of the lifting ring screws 13 is 4, the type is M48, and the lifting ring screws are uniformly arranged in the fastening screw holes of the main oil cylinder 2; a first hanging strip 14a is tied between the first hand-held hoist 12a and 2 lifting ring screws 13, and a second hanging strip 14b is tied between the second hand-held hoist 12b and the other 2 lifting ring screws 13; preferably, in the present embodiment, the first and second straps 14a and 14b each have a load of 3 tons and a length of 2 meters;
s30), the main oil cylinder 2 is lifted from the main oil cylinder base 3 by simultaneously operating the first hand-pulling block 12a and the second hand-pulling block 12b;
s40), the lifted main oil cylinder 2 is transported out of the interior of the six-roller reciprocating rolling mill 1 through the main oil cylinder carrying trolley 4 arranged on the support roller track 1 b; preferably, in the present embodiment, the master cylinder carrying trolley 4 is composed of a guide wheel 4a, a mandrel and an iron plate 4b which are integrally installed, and is used for carrying the master cylinder 2; further preferably, the number of guide wheels 4a is 4; each guide wheel 4a adopts a roller bearing seat guide wheel, so that the safety and reliability are realized, and the weight of the main oil cylinder 2 can be borne;
s50), the main oil cylinder 2 after maintenance and replacement is carried into the six-roller reciprocating type rolling mill 1 through the main oil cylinder carrying trolley 4 placed on the supporting roller track 1b, then the main oil cylinder 2 after maintenance and replacement is placed and installed on the main oil cylinder base 3 corresponding to the main oil cylinder 2 through operating the first hand-pulling block 12a and the second hand-pulling block 12b, and therefore the main oil cylinder 2 is convenient and fast to replace.
In the embodiment, the main cylinder carrying trolley 4 is placed on the support roller track 1b to play a role of transporting the main cylinder 2 in and out of the six-roller reciprocating mill 1.
In the embodiment, after H-shaped steel 11 is erected on a rolling mill intermediate roll track 1a, a first hand-pulling hoist 12a and a second hand-pulling hoist 12b are hung on the H-shaped steel 11, then four fastening screws of a main oil cylinder 2 are dismounted, lifting ring screws 13 are installed, finally a first lifting belt 14a and a second lifting belt 14b are respectively tied between the first hand-pulling hoist 12a, the second hand-pulling hoist 12b and the lifting ring screws 13, and during actual work, the main oil cylinder 2 is lifted by operating the first hand-pulling hoist 12a and the second hand-pulling hoist 12b, and then the main oil cylinder 2 is placed on a main oil cylinder carrying trolley 4 to be carried out of the interior of the six-roll reciprocating rolling mill 1; finally, similarly, the main oil cylinder 2 after maintenance and replacement is carried into the six-roller reciprocating rolling mill 1 through the main oil cylinder carrying trolley 4, and the main oil cylinder 2 is placed and installed on the main oil cylinder base 3 corresponding to the main oil cylinder 2 by operating the first hand-pulling block 12a and the second hand-pulling block 12b, so that the main oil cylinder 2 is conveniently and quickly replaced; and the instrument simple structure that this embodiment used, convenient operation has effectively improved the maintenance operation security of master cylinder 2 in six roller reciprocating type rolling mill 1 simultaneously, and is showing and improving maintenance efficiency.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present specification describes embodiments, not every embodiment includes only a single embodiment, and such description is for clarity purposes only, and it is to be understood that all embodiments may be combined as appropriate by one of ordinary skill in the art to form other embodiments as will be apparent to those of skill in the art from the description herein.
Claims (10)
1. A method for replacing a master cylinder of a reciprocating rolling mill, wherein the reciprocating rolling mill is respectively provided with a rolling mill intermediate roll track and a rolling mill support roll track, is characterized by comprising the following operation steps:
s10), placing H-shaped steel on the rolling mill intermediate roll track, and then respectively hanging a first hand-pulled hoist and a second hand-pulled hoist on the H-shaped steel;
s20) after the fastening screws of the main oil cylinder of the reciprocating rolling mill are detached, hanging ring screws are correspondingly installed in the fastening screw holes respectively, a first hanging strip is tied between the first hand-pull hoist and 2 hanging ring screws, and a second hanging strip is tied between the second hand-pull hoist and the other 2 hanging ring screws;
s30), the main oil cylinder is lifted from the main oil cylinder base by simultaneously operating the first hand-pulling block and the second hand-pulling block;
s40), the lifted master cylinder is transported out of the interior of the reciprocating rolling mill by the master cylinder carrying trolley placed on the supporting roller track.
2. The method for replacing the master cylinder of the rolling mill according to claim 1, wherein the step S40) is followed by further comprising:
s50) transporting the main oil cylinder after maintenance and replacement into the reciprocating type rolling mill through a main oil cylinder carrying trolley placed on a support roller track, and then placing and installing the main oil cylinder after maintenance and replacement on a main oil cylinder base corresponding to the main oil cylinder by operating a first hand-pull hoist and a second hand-pull hoist, so that the main oil cylinder is convenient and fast to replace.
3. The replacement method according to claim 1, wherein the shuttle mill is a six-roll shuttle mill.
4. The replacement method according to claim 1 or 3, wherein in the step S10), the H-shaped steel is erected on the rolling mill intermediate roll rail as a beam structure when the master cylinder is hoisted in performing the step S30).
5. The replacement method according to claim 4, wherein the length of the H-shaped steel is 1000-1200mm, and the size of the H-shaped steel is 100X 100mm and is used for bearing the weight of the master cylinder.
6. The replacing method according to claim 1, wherein the first and second hand-held hoists each have a load of 5 tons, and in the step S30), the first and second hand-held hoists are synchronously operated to lift the master cylinder.
7. The replacement method according to claim 1, wherein the number of the lifting eye screws is 4, the model is M48, and the lifting eye screws are uniformly arranged in fastening screw holes of the main oil cylinder.
8. The replacement method according to claim 1, wherein the harness is loaded with 3 tons and has a length of 2 meters.
9. The method of changing as claimed in claim 1, wherein the master cylinder carriage is comprised of a guide wheel, a mandrel and an iron plate integrally installed for carrying the master cylinder.
10. The changing method according to claim 9, wherein the number of the guide wheels is 4; each guide wheel is a roller bearing seat guide wheel, so that the roller bearing seat guide wheel is safe and reliable, and the main oil cylinder can bear the weight of the main oil cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210790064.0A CN115476137A (en) | 2022-07-05 | 2022-07-05 | Replacement method of main oil cylinder of reciprocating rolling mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210790064.0A CN115476137A (en) | 2022-07-05 | 2022-07-05 | Replacement method of main oil cylinder of reciprocating rolling mill |
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| CN115476137A true CN115476137A (en) | 2022-12-16 |
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| CN202210790064.0A Pending CN115476137A (en) | 2022-07-05 | 2022-07-05 | Replacement method of main oil cylinder of reciprocating rolling mill |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004105985A (en) * | 2002-09-13 | 2004-04-08 | Ishikawajima Harima Heavy Ind Co Ltd | Roll changing device for hot-rolling mill |
| CN103286540A (en) * | 2013-05-27 | 2013-09-11 | 中色科技股份有限公司 | Detachment method for screwdown cylinders on rolling mill |
| CN203235756U (en) * | 2013-04-13 | 2013-10-16 | 北京首钢国际工程技术有限公司 | Frame replacement dolly for short-stress-path vertical type rolling mill |
| CN204413504U (en) * | 2014-12-18 | 2015-06-24 | 二重集团（德阳）重型装备股份有限公司 | The dismounting of milling train HGC device is special to be attached |
| KR101623419B1 (en) * | 2014-11-14 | 2016-05-23 | 주식회사 포스코건설 | Apparatus for adjusting double wedge passline and apparatus for changing roll and method for changing roll using the same |
| CN206794368U (en) * | 2017-06-21 | 2017-12-26 | 江阴兴澄特种钢铁有限公司 | Four-roller stove rolls up the cylinder replacing device of reversable mill automatic thickness control device |
| CN107671124A (en) * | 2017-09-12 | 2018-02-09 | 宁波宝新不锈钢有限公司 | A kind of replacing options of large-scale AGC hydraulic cylinders |
| CN108237503A (en) * | 2016-12-26 | 2018-07-03 | 宝山钢铁股份有限公司 | A kind of slab vertical miller pressure measurement screw replaces device and method |
| CN213171140U (en) * | 2020-07-02 | 2021-05-11 | 九江萍钢钢铁有限公司 | Electric replacement tool for AGC cylinder of heavy and medium plate mill |
| CN216613825U (en) * | 2021-09-15 | 2022-05-27 | 首钢智新迁安电磁材料有限公司 | Rolling mill presses pneumatic cylinder on and changes device |
-
2022
- 2022-07-05 CN CN202210790064.0A patent/CN115476137A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004105985A (en) * | 2002-09-13 | 2004-04-08 | Ishikawajima Harima Heavy Ind Co Ltd | Roll changing device for hot-rolling mill |
| CN203235756U (en) * | 2013-04-13 | 2013-10-16 | 北京首钢国际工程技术有限公司 | Frame replacement dolly for short-stress-path vertical type rolling mill |
| CN103286540A (en) * | 2013-05-27 | 2013-09-11 | 中色科技股份有限公司 | Detachment method for screwdown cylinders on rolling mill |
| KR101623419B1 (en) * | 2014-11-14 | 2016-05-23 | 주식회사 포스코건설 | Apparatus for adjusting double wedge passline and apparatus for changing roll and method for changing roll using the same |
| CN204413504U (en) * | 2014-12-18 | 2015-06-24 | 二重集团（德阳）重型装备股份有限公司 | The dismounting of milling train HGC device is special to be attached |
| CN108237503A (en) * | 2016-12-26 | 2018-07-03 | 宝山钢铁股份有限公司 | A kind of slab vertical miller pressure measurement screw replaces device and method |
| CN206794368U (en) * | 2017-06-21 | 2017-12-26 | 江阴兴澄特种钢铁有限公司 | Four-roller stove rolls up the cylinder replacing device of reversable mill automatic thickness control device |
| CN107671124A (en) * | 2017-09-12 | 2018-02-09 | 宁波宝新不锈钢有限公司 | A kind of replacing options of large-scale AGC hydraulic cylinders |
| CN213171140U (en) * | 2020-07-02 | 2021-05-11 | 九江萍钢钢铁有限公司 | Electric replacement tool for AGC cylinder of heavy and medium plate mill |
| CN216613825U (en) * | 2021-09-15 | 2022-05-27 | 首钢智新迁安电磁材料有限公司 | Rolling mill presses pneumatic cylinder on and changes device |
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