CN114535304A - Auxiliary trolley for overhauling variable-track rolling mill and using method thereof - Google Patents
Auxiliary trolley for overhauling variable-track rolling mill and using method thereof Download PDFInfo
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- CN114535304A CN114535304A CN202011346906.0A CN202011346906A CN114535304A CN 114535304 A CN114535304 A CN 114535304A CN 202011346906 A CN202011346906 A CN 202011346906A CN 114535304 A CN114535304 A CN 114535304A
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- trolley
- limiting
- auxiliary trolley
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- lifting platform
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
- B21B31/08—Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts
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Abstract
The invention provides an auxiliary trolley for overhauling a variable-track rolling mill and a using method thereof, wherein the auxiliary trolley comprises a trolley body and wheels, and the trolley body is provided with a driving motor for driving the wheels to rotate; one end of the trolley body, which is far away from the driving motor, is provided with a lifting platform which can lift up and down; the wheel is used for being matched with the working roller track and comprises a wheel body, a limiting part and a limiting adjusting block detachably arranged on the limiting part, the end face of the limiting part, close to the wheel body, is a first limiting face, and the end face of the limiting adjusting block, close to the wheel body, is a second limiting face; when the wheel works on the working roller track, the outer circumferential surface of the wheel body is in rolling fit with the upper end surface of the working roller track, and the first limiting surface or the second limiting surface is attached to the side surface of the working roller track; by using the auxiliary trolley, the overhaul time of the production line is shortened, and the overhaul efficiency is increased.
Description
Technical Field
The invention relates to the field of maintenance of variable-rail rolling mills, in particular to an auxiliary trolley for maintenance of a variable-rail rolling mill and a using method thereof.
Background
The hot-rolling roughing mill is the main equipment of the hot-rolling sheet strip steel production line, and most of the equipment (including working rolls, pressing packages and the like) of the hot-rolling roughing mill is positioned inside a mill housing. In order to facilitate the extraction and installation of the working rolls, a working roll track for extracting and installing the working rolls is arranged in the rolling mill housing. When the equipment in the housing of the rolling mill is replaced, the hook head of the travelling crane cannot reach, and the heavy object is difficult to transport, particularly the relevant equipment in the housing of the rolling mill and at the top of the hot rolling roughing mill. In the prior art, when the equipment is replaced, the equipment is often required to be replaced by drawing and installing the working roller.
Specifically, the replacement of the press pack of the hot-rolling roughing mill is taken as an example. The press package is arranged at the top of the hot rolling roughing mill and is positioned above the working roll during working. The prior art replacing the pressed packet comprises the following steps: the working roll is subjected to power failure hanging, the pressing bag is unloaded and placed on the upper end surface of the working roll under the condition that hydraulic equipment on a production line is not stopped, and then the working roll is drawn out of a rolling mill housing; and in the installation process, the pressing bag is arranged on the upper end surface of the working roll, and the pressing bag is installed in the process of loading the working roll into the mill housing.
It should be noted that, in the prior art, the drawing and the loading of the working roll must be performed on the premise that the hydraulic equipment of the production line is operated in the whole line. In the maintenance process of the production line, the hydraulic equipment is maintained without stopping, and potential safety hazards exist, so that in the maintenance process, the hydraulic equipment on the whole line is required to be powered off to hang the plate. That is to say, in the whole maintenance process, the change of equipment such as pressure package can only be gone on when the working roll is taken out and the installation (whole line hydraulic equipment all moves promptly), again because equipment dismouting time itself such as pressure package is longer, this maintenance time extension that just leads to the production line, and then has reduced the efficiency of overhauing. Meanwhile, the upper end surface of the working roll is narrow and not suitable for bearing equipment such as press bags and the like, and in the carrying process, the relevant equipment such as the press bags carried on the working roll often collides with other equipment to cause mechanical damage; moreover, the space between the upper end surface of the work roll and the top of the hot-rolling roughing mill is small, and the replacement of the relevant equipment is difficult.
Disclosure of Invention
In view of the above-mentioned shortcomings of the prior art, the present invention provides an auxiliary cart for repairing a rolling mill with a variable rail, which has a simple structure and is convenient to use.
The invention provides an auxiliary trolley for overhauling a variable-track rolling mill, which comprises a trolley body and wheels, wherein the trolley body is provided with a driving motor for driving the wheels to rotate; a lifting platform which can lift up and down is arranged at one end of the trolley body, which is far away from the driving motor, along the length direction of the trolley body; the wheel is used for being matched with the track of the working roller and comprises a wheel body, a limiting part and a limiting adjusting block detachably arranged on the limiting part, the end face of the limiting part, close to the wheel body, is a first limiting face, and the end face of the limiting adjusting block, close to the wheel body, is a second limiting face; when the wheels work on the working roller rails, the outer circumferential surface of the wheel body is in rolling fit with the upper end faces of the working roller rails, and the first limiting face or the second limiting face is attached to the side faces of the working roller rails.
Furthermore, the lifting platform and the upper end face of the trolley body are connected with a telescopic mechanism, and a hydraulic cylinder for driving the telescopic mechanism to extend or contract is arranged on the telescopic mechanism.
The invention also provides a use method of the auxiliary trolley for overhauling the variable rail rolling mill, which is characterized by comprising the following steps: the method sequentially comprises the following steps:
s1, driving the auxiliary trolley to enter the mill housing along the working roll track;
s2, lifting the lifting platform to the position of equipment to be disassembled; disassembling the equipment to be disassembled and placing the equipment on the lifting platform; descending the lifting platform and driving the auxiliary trolley to move out of the rolling mill housing;
s3, placing equipment to be installed on a lifting platform of the auxiliary trolley, and driving the auxiliary trolley to enter a mill housing;
and S4, lifting the lifting platform to the installation position of the equipment to be installed, installing the equipment to be installed, lowering the lifting platform, and driving the auxiliary trolley to move out of the rolling mill housing.
Further, before step S1, the work rolls in the mill housing are extracted, and the entire line hydraulic equipment is stopped.
Further, after step S4, the full-line hydraulic equipment is started, and the work rolls are installed in the mill housing.
As mentioned above, the auxiliary trolley for the maintenance of the variable-track rolling mill and the use method thereof have the following beneficial effects:
according to the auxiliary trolley disclosed by the invention, the first limiting surface or the second limiting surface can be matched with the working roller track according to the actual condition of the working roller track, so that the auxiliary trolley is simple and convenient and has strong practicability. Meanwhile, the use method of the auxiliary trolley drives the auxiliary trolley to enter the mill housing, the lifting platform is lifted up and down to a preset position, and relevant equipment positioned in the mill housing and at the top of the hot rolling roughing mill is replaced, so that the situation that the replacement of the relevant equipment can be carried out only by means of the pulling and installing of the working rolls is avoided, the maintenance time of a production line is shortened, and the maintenance efficiency is increased; meanwhile, the working space for replacing the press bag and other related equipment is enlarged, the disassembly and the assembly are convenient, and the disassembled equipment and the equipment to be installed are convenient to transport.
Drawings
FIG. 1 is a schematic view of the auxiliary trolley for overhauling the orbital transfer rolling mill of the invention when the lifting platform is not lifted;
FIG. 2 is a schematic diagram of the lifting platform of the auxiliary trolley for overhauling the variable-track rolling mill after being lifted;
FIG. 3 is a partial schematic view of the auxiliary cart for repairing the variable track rolling mill of the present invention in the working roll track;
FIG. 4 is an enlarged view of area A of FIG. 3;
FIG. 5 is a schematic view of the rail-changeable auxiliary trolley for rolling mill maintenance replacing the pressing packet in the rolling mill housing.
Reference numerals
100. An auxiliary trolley; 110. a trolley body; 120. a wheel; 121. a wheel body; 122. a limiting part; 123. a first limiting surface; 130. an axle; 140. a lifting device; 141. a lifting platform; 142. a telescoping mechanism; 143. a hydraulic cylinder; 150. a step; 160. a limit adjusting block; 161. a second limiting surface; 170. a drive motor; 180. a speed reducer; 200. a rolling mill housing; 220. a work roll track; 230. and (6) pressing the bag.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions under which the present invention can be implemented, so that the present invention has no technical significance, and any structural modification, ratio relationship change, or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention. In addition, the terms such as "upper", "lower", "left", "right", "middle", etc. used in the present specification are used for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms may be changed or adjusted without substantial technical change.
As shown in fig. 1, fig. 2, fig. 3 and fig. 4, the auxiliary cart 100 for overhauling a variable track rolling mill, provided by the invention, comprises a cart body 110 and wheels 120, wherein the cart body 110 is provided with a driving motor 170 for driving the wheels 120 to rotate; a lifting platform 141 which can lift up and down is arranged at one end of the trolley body 110 far away from the driving motor 170 along the length direction of the trolley body 110; the wheel 120 is used for matching with the working roll track 220, the wheel 120 comprises a wheel body 121, a limiting part 122 and a limiting adjusting block 160 detachably mounted on the limiting part 122, the end surface of the limiting part 122 close to the wheel body 121 is a first limiting surface 123, and the end surface of the limiting adjusting block 160 close to the wheel body 121 is a second limiting surface 161; when the wheel 120 works on the work roll rail 220, the outer circumferential surface of the wheel body 121 is in rolling fit with the upper end surface of the work roll rail 220, and the first limiting surface 123 or the second limiting surface 161 is attached to the side surface of the work roll rail 220.
When the auxiliary trolley 100 for overhauling the variable-rail rolling mill is used, the limit adjusting block 160 can be selectively detached according to different widths of the working roll track 220, namely, the first limit surface 123 or the second limit surface 161 is selected to be matched with the working roll track 220, so that the purpose of rail change is achieved, and the auxiliary trolley is simple and convenient and high in practicability. In the present embodiment, the limit adjusting block 160 is connected to the limit portion 122 by a bolt.
As shown in fig. 5, the auxiliary cart 100 is placed behind the work roll rail 220 and driven forward by the driving motor 170. In the present embodiment, the wheels 120 are connected by the axle 130, and a speed reducer 180 may be provided between the driving motor 170 and the axle 130 for transmission. After the auxiliary cart 100 is driven to a predetermined position, the lifting platform 141 can be lifted up and down to repair or replace the related equipment at a high position. The whole auxiliary trolley 100 is simple in structure, convenient to use and suitable for the working environment of the mill housing 200.
As shown in fig. 2, a telescopic mechanism 142 is connected to the elevating table 141 and the upper end surface of the cart body 110, the telescopic mechanism 142 is a fork lever set, and a hydraulic cylinder 143 for driving the telescopic mechanism 142 to extend or contract is provided in the telescopic mechanism 142. The telescopic mechanism 142, the hydraulic cylinder 143 and the lifting platform 141 form the lifting device 140 with a simple structure, the operation is convenient, and the lifting platform 141 can be lifted up and down well. Of course, a step 150 may be disposed between the lifting platform 141 and the cart body 110 to facilitate the related personnel to enter the lifting platform 141.
As shown in fig. 2 and 5, the present invention further provides a method for using the auxiliary cart 100 for overhauling the variable rail rolling mill, which sequentially comprises the following steps: 1) driving the auxiliary trolley 100 along the work roll track 220 into the mill housing 200; 2) lifting the lifting platform 141 to the equipment to be disassembled; the device to be disassembled is disassembled and placed on the lifting platform 141; the lifting platform 141 is lowered to drive the auxiliary trolley 100 to exit the rolling mill housing 200; 3) placing a device to be installed, such as a pressing bag 230 in the mill housing 200, on the lifting table 141 of the auxiliary trolley 100, and driving the auxiliary trolley 100 into the mill housing 200; 4) and (3) lifting the lifting platform 141 to the installation position of the equipment to be installed, installing the equipment to be installed, and lowering the lifting platform 141 to drive the auxiliary trolley 100 to exit the rolling mill housing 200. By using the auxiliary trolley 100 according to the method, the working space for replacing the press bag 230 and other related equipment is enlarged, the disassembly and the assembly are convenient, and the disassembled equipment and the equipment to be installed are convenient to transport.
As shown in fig. 2 and 5, in the actual production process, before the step 1) is executed, the working rolls in the mill housing 200 are extracted, and the whole-line hydraulic equipment is stopped. This allows the repair and replacement of the press bag 230 and other related equipment to be carried out without being limited by a full line hydraulic stop, either during major or minor repairs of the production line, increasing the degree of freedom of the work schedule. Taking the replacement of the pressure packet 230 as an example, first, the replacement work can be performed in parallel with the maintenance work of other production lines when the entire line is hydraulically stopped, so that the time required for replacing the pressure packet 230 alone is directly saved for the entire maintenance. Secondly, because when the pressure package 230 is replaced, the replacement personnel need to change the position of the pressure package, the auxiliary trolley 100 is adopted, and only the driving motor 170 needs to be started to drive the auxiliary trolley 100 back and forth, so that the back and forth movement of the working roller is avoided, the replacement time of the pressure package 230 is directly reduced to 5 hours from the original 10.2 hours, and the maintenance efficiency is improved.
After step S4, the full-line hydraulic equipment is started, the work rolls are installed in the mill housing 200, and the maintenance of the whole hot-rolling roughing mill is finished.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (5)
1. The utility model provides a changeable rail rolling mill overhauls uses auxiliary trolley which characterized in that: the trolley comprises a trolley body (110) and wheels (121), wherein a driving motor (170) for driving the wheels (121) to rotate is arranged on the trolley body (110); a lifting platform (141) which can lift up and down is arranged at one end of the trolley body (110) far away from the driving motor (170) along the length direction of the trolley body (110); the wheel (120) is used for being matched with the working roller track (220), the wheel (120) comprises a wheel body (121), a limiting part (122) and a limiting adjusting block (160) detachably mounted on the limiting part (122), the end face, close to the wheel body (121), of the limiting part (122) is a first limiting face (123), and the end face, close to the wheel body (121), of the limiting adjusting block (160) is a second limiting face (161); when the wheels (120) work on the working roller rails (220), the outer circumferential surface of the wheel body (121) is matched with the upper end surface of the working roller rails (220) in a rolling mode, and the first limiting surface (123) or the second limiting surface (161) is attached to the side surface of the working roller rails (220).
2. The auxiliary trolley for overhauling a variable track rolling mill as claimed in claim 1, wherein: the lifting platform (141) and the upper end face of the trolley body (110) are connected with a telescopic mechanism (142), and a hydraulic cylinder (143) for driving the telescopic mechanism (142) to extend or contract is arranged on the telescopic mechanism (142).
3. The use method of the auxiliary trolley for the maintenance of the variable rail rolling mill as claimed in claim 1 is characterized in that: the method sequentially comprises the following steps:
s1, driving the auxiliary trolley (100) to enter the mill housing (200) along the working roll track (220);
s2, lifting the lifting platform (141) to the position of equipment to be disassembled; disassembling the equipment to be disassembled and placing the equipment on the lifting platform (141); descending the lifting platform (141) and driving the auxiliary trolley (100) to move out of the rolling mill housing (200);
s3, placing equipment to be installed on the lifting platform (141) of the auxiliary trolley (100), and driving the auxiliary trolley (100) to enter the mill housing (200);
s4, lifting the lifting platform (141) to the installation position of the equipment to be installed, installing the equipment to be installed, descending the lifting platform (141), and driving the auxiliary trolley (100) to move out of the rolling mill housing (200).
4. The use method of the auxiliary trolley for the maintenance of the variable rail rolling mill as claimed in claim 3, wherein the auxiliary trolley comprises: before step S1, the work rolls in the mill housing (200) are extracted and the full-line hydraulic equipment is shut down.
5. The use method of the auxiliary trolley for the maintenance of the variable rail rolling mill as claimed in claim 3, wherein the auxiliary trolley comprises: after step S4, the full-line hydraulic equipment is started and work rolls are installed into the mill housing (210).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011346906.0A CN114535304A (en) | 2020-11-26 | 2020-11-26 | Auxiliary trolley for overhauling variable-track rolling mill and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011346906.0A CN114535304A (en) | 2020-11-26 | 2020-11-26 | Auxiliary trolley for overhauling variable-track rolling mill and using method thereof |
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| Publication Number | Publication Date |
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| CN114535304A true CN114535304A (en) | 2022-05-27 |
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| CN202011346906.0A Pending CN114535304A (en) | 2020-11-26 | 2020-11-26 | Auxiliary trolley for overhauling variable-track rolling mill and using method thereof |
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|---|---|---|---|---|
| UA61309A (en) * | 2002-12-28 | 2003-11-17 | Univ Dnipropetrovsk Nat | Wheel pair of rolling-stock for gauges of different width |
| CN202037179U (en) * | 2011-01-01 | 2011-11-16 | 河北钢铁股份有限公司邯郸分公司 | Multifunctional overhaul device of rolling mill |
| CN202207709U (en) * | 2011-08-11 | 2012-05-02 | 二重集团（德阳）重型装备股份有限公司 | Special attachment for replacing rolling mill stepped shims and lower hydraulic AGC device |
| CN202803757U (en) * | 2012-08-28 | 2013-03-20 | 中冶宝钢技术服务有限公司 | Lining plate replacement device of blooming mill |
| CN205852717U (en) * | 2016-06-16 | 2017-01-04 | 中冶宝钢技术服务有限公司 | A kind of multifunctional combined apparatus for milling train maintenance |
| CN108438012A (en) * | 2018-04-26 | 2018-08-24 | 盐城工业职业技术学院 | Not parking displacement wheel rail connector |
| CN108620845A (en) * | 2018-05-15 | 2018-10-09 | 中冶宝钢技术服务有限公司 | Rolling mill press head assists disassemblerassembler and pressure head method for dismounting |
| CN108688400A (en) * | 2017-04-06 | 2018-10-23 | 裵庭俊 | The connecting component and train wheel of railroad track |
| CN211100787U (en) * | 2019-11-29 | 2020-07-28 | 陕西龙门钢铁有限责任公司 | Roll changing trolley suitable for changing working rolls of strip steel four-roll mill |
-
2020
- 2020-11-26 CN CN202011346906.0A patent/CN114535304A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| UA61309A (en) * | 2002-12-28 | 2003-11-17 | Univ Dnipropetrovsk Nat | Wheel pair of rolling-stock for gauges of different width |
| CN202037179U (en) * | 2011-01-01 | 2011-11-16 | 河北钢铁股份有限公司邯郸分公司 | Multifunctional overhaul device of rolling mill |
| CN202207709U (en) * | 2011-08-11 | 2012-05-02 | 二重集团（德阳）重型装备股份有限公司 | Special attachment for replacing rolling mill stepped shims and lower hydraulic AGC device |
| CN202803757U (en) * | 2012-08-28 | 2013-03-20 | 中冶宝钢技术服务有限公司 | Lining plate replacement device of blooming mill |
| CN205852717U (en) * | 2016-06-16 | 2017-01-04 | 中冶宝钢技术服务有限公司 | A kind of multifunctional combined apparatus for milling train maintenance |
| CN108688400A (en) * | 2017-04-06 | 2018-10-23 | 裵庭俊 | The connecting component and train wheel of railroad track |
| CN108438012A (en) * | 2018-04-26 | 2018-08-24 | 盐城工业职业技术学院 | Not parking displacement wheel rail connector |
| CN108620845A (en) * | 2018-05-15 | 2018-10-09 | 中冶宝钢技术服务有限公司 | Rolling mill press head assists disassemblerassembler and pressure head method for dismounting |
| CN211100787U (en) * | 2019-11-29 | 2020-07-28 | 陕西龙门钢铁有限责任公司 | Roll changing trolley suitable for changing working rolls of strip steel four-roll mill |
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