CN111715699B - Device and process for disassembling and assembling main transmission shaft of rolling mill - Google Patents
Device and process for disassembling and assembling main transmission shaft of rolling mill Download PDFInfo
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- CN111715699B CN111715699B CN202010519303.XA CN202010519303A CN111715699B CN 111715699 B CN111715699 B CN 111715699B CN 202010519303 A CN202010519303 A CN 202010519303A CN 111715699 B CN111715699 B CN 111715699B
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- track
- middle base
- rolling mill
- transmission shaft
- main transmission
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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
- B21B31/10—Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts by horizontally displacing, i.e. horizontal roll changing
- B21B31/103—Manipulators or carriages therefor
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- Mounting Of Bearings Or Others (AREA)
Abstract
The invention relates to a device and a process for disassembling and assembling a main transmission shaft of a rolling mill, wherein the rolling mill is provided with a roll changing track positioned below the main transmission shaft, the disassembling and assembling device comprises a middle base track, a bearing trolley arranged on the middle base track and roller assemblies arranged on the left side and the right side of the middle base track, each roller assembly comprises a rotatable track roller, each track roller is used for being placed on the roll changing track to roll, the bearing trolley can move back and forth along the middle base track, the bearing trolley comprises a trolley main body frame, a supporting seat positioned on the trolley main body frame and a lifting driving mechanism arranged on the trolley main body frame, the lifting driving mechanism drives the supporting seat to move up and down, and the supporting seat is used for bearing the main transmission shaft. The dismounting device provided by the invention can be used for conveniently and efficiently dismounting the main transmission shaft from a narrow mounting space by using the roll changing track of the rolling mill, is safe and reliable, and improves the labor efficiency.
Description
Technical Field
The invention relates to the field of mechanical maintenance, in particular to a device and a process for disassembling and assembling a main transmission shaft of a rolling mill.
Background
The disassembly and assembly operations of the replacement of the main transmission shaft of the rolling mill are carried out in the rolling mill, and the traditional construction method comprises the following steps: firstly, hanging a plurality of chain blocks in a rolling mill by an operator, fixing and keeping a main transmission shaft, and then removing a fixing bolt; then the chain block is manually adjusted to slowly drop the main transmission shaft; and then the transmission shaft is carried out from the interior of the rolling mill by switching the chain block. The construction method is a traditional technology of hoisting and parallel transportation by using a manual operation machine, is relatively labor-consuming, and is small in installation space around a main transmission shaft, high in operation difficulty and high in safety risk due to the fact that the interior of a rolling mill is narrow.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, the present invention provides a device and a process for dismounting a main transmission shaft of a rolling mill, which can conveniently, efficiently and safely dismount the main transmission shaft of the rolling mill by means of a roll changing track of the rolling mill.
In order to achieve the purpose, the invention provides a dismounting device for a main transmission shaft of a rolling mill, wherein the rolling mill is provided with a roll changing track positioned below the main transmission shaft, the dismounting device comprises a middle base track, a bearing trolley arranged on the middle base track and roller assemblies arranged on the left side and the right side of the middle base track, each roller assembly comprises a rotatable track roller, each track roller is used for being placed on the roll changing track to roll, the bearing trolley can move back and forth along the middle base track, the bearing trolley comprises a trolley main body frame, a supporting seat positioned on the trolley main body frame and a lifting driving mechanism arranged on the trolley main body frame, the lifting driving mechanism drives the supporting seat to move up and down, and the supporting seat is used for bearing the main transmission shaft.
Furthermore, the supporting seats of the bearing trolley are two and are respectively arranged at the front end and the rear end of the trolley main body frame.
Furthermore, a V-shaped direction stabilizing plate is arranged on the supporting seat and used for placing the main transmission shaft.
Further, the bearing trolley further comprises a lifting guide sleeve fixedly arranged in the trolley main body frame and a lifting guide post arranged in the lifting guide sleeve, and the lifting guide post is fixedly connected with the supporting seat.
Further, the lifting driving mechanism is an oil cylinder.
Furthermore, the bearing trolley further comprises trolley rollers arranged at the lower end of the trolley main body frame, and the trolley rollers roll on the middle base track.
Further, the roller assembly further comprises a mounting seat and a position adjusting mechanism, the mounting seat is fixed on the side edge of the middle base track, the track roller is rotatably mounted in the mounting seat, and the position of the track roller in the left-right direction can be adjusted by the position adjusting mechanism.
Further, position control mechanism is including fixing the axle sleeve in the mount pad, installing axle and the bolt in the axle sleeve, the axle sleeve is arranged along left right direction, be provided with a plurality of regulation holes along its axial on the axle sleeve, install the epaxial connecting hole that is equipped with of axle, the bolt passes regulation hole and connecting hole, will install axle and axle sleeve axial fixity and connect, the track gyro wheel is rotationally installed on the installation axle.
Further, still including setting up the extension track of connecting both ends around the middle base track, the extension track is connected with middle base track detachablely, perhaps can rotate ground and middle base track connection from top to bottom.
The invention also provides a process for disassembling and assembling a main transmission shaft of a rolling mill, wherein the rolling mill is provided with a roll changing track positioned below the main transmission shaft, the disassembly and assembly device is adopted for disassembling and assembling the main transmission shaft of the rolling mill, and the process comprises the following steps:
s1, placing a dismounting device on a roll changing track of the rolling mill, and placing track rollers on the left side and the right side of a middle base track on the roll changing track;
s2, pushing the middle base track to move on the roll changing track and enter the rolling mill, and adjusting the position of the bearing trolley on the middle base track to be positioned below the main transmission shaft;
s3, lifting the supporting seat through the lifting driving mechanism, supporting the supporting seat at the lower end of the main transmission shaft, and detaching the connection between the main transmission shaft and the rolling mill; and slowly lowering the lifting support seat to push the bearing trolley and the middle base track to move, and conveying the main transmission shaft out of the rolling mill.
As described above, the dismounting device and the dismounting process according to the present invention have the following advantages:
through setting up middle base track, bear the weight of the platform truck, and roller components, during the use, lay dismouting device on the roll change track of rolling mill, middle base track rolls on the roll change track through the track gyro wheel among the roller components, get into inside the rolling mill, it moves to final drive shaft below along middle base track to bear the weight of the platform truck, then descend on through lift actuating mechanism drive supporting seat, support at the final drive shaft lower extreme, demolish the back with final drive shaft with being connected of rolling mill, slowly reduce the supporting seat, then promote to bear the weight of platform truck and middle base track and remove, it can with final drive shaft transport rolling mill. The dismounting device provided by the invention can be used for conveniently and efficiently dismounting the main transmission shaft from a narrow mounting space of the main transmission shaft by using the roll changing track of the rolling mill, solves the problems of narrow space, difficulty in dismounting and hoisting, large risk factors and the like when the main transmission shaft of the rolling mill is replaced, and improves the labor efficiency.
Drawings
Fig. 1 is a schematic structural view of the dismounting device of the present invention.
Fig. 2 is a top view of fig. 1.
Fig. 3 is a schematic structural view of the carrying trolley of the present invention.
Fig. 4 is a left side view of fig. 3.
Fig. 5 is a front side view of fig. 3.
Fig. 6 is a schematic structural view of a roller assembly in the present invention.
Fig. 7 is a top view of fig. 6.
Fig. 8 is a sectional view taken along line B-B in fig. 7.
Fig. 9 is a schematic view of the structure of the extended track in the present invention. FIG. 10 is a schematic view of the disassembling and assembling device of the present invention
Description of the element reference numerals
1 middle base track
2 roller component
21 track roller
22 mounting seat
23 shaft sleeve
231 adjusting hole
24 mounting shaft
25 bolt
3 bearing trolley
31 trolley main body frame
32 support seat
321V-shaped direction stabilizing plate
33 oil cylinder
34 lifting guide sleeve
35 lifting guide post
36 trolley roller
4 extension track
41 connecting side plate
42 rotating shaft pin
5 support column
6 sliding sleeve
7 main transmission shaft
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure of the present invention.
It should be understood that the structures, proportions, and dimensions shown in the drawings and described herein are for illustrative purposes only and are not intended to limit the scope of the present invention, which is defined by the claims, but rather by the claims. In addition, the terms such as "upper", "lower", "left", "right" and "middle" used in the present specification are for convenience of description only, and are not intended to limit the scope of the present invention, and changes or modifications of the relative relationship thereof may be regarded as the scope of the present invention without substantial changes in the technical contents.
Referring to fig. 1 to 10, the present invention provides a device for dismounting a main transmission shaft 7 of a rolling mill, the main transmission shaft 7 of the rolling mill is installed inside the rolling mill, an installation space around the main transmission shaft 7 is small, the main transmission shaft 7 is used for driving a work roll to move, a roll change track located below the main transmission shaft 7 is arranged inside the rolling mill in the installation space of the main transmission shaft 7, the roll change track extends from the outside of the rolling mill to the inside of the rolling mill, and the work roll is replaced by entering a roll change tool into the inside of the rolling mill.
The dismounting device comprises a middle base track 1, a bearing trolley 3 arranged on the middle base track 1 and roller assemblies 2 arranged on the left side and the right side of the middle base track 1, wherein each roller assembly 2 comprises a rotatable track roller 21, the track rollers 21 are used for being placed on a roller changing track to roll, the bearing trolley 3 can move back and forth along the middle base track 1, the bearing trolley 3 comprises a trolley main body frame 31, a supporting seat 32 positioned on the trolley main body frame and a lifting driving mechanism arranged on the trolley main body frame 31, the lifting driving mechanism drives the supporting seat 32 to move up and down, and the supporting seat 32 is used for bearing a main transmission shaft 7.
The working principle of the dismounting device provided by the invention is as follows: the sizes of the middle base track 1 and the track roller 21 are determined according to the size of the roller changing track, and the size of the bearing trolley 3 is smaller than the size of the installation space of the main transmission shaft 7, so that the bearing trolley can smoothly enter the installation space of the main transmission shaft 7. When in use, the dismounting device is arranged on the roll changing track of the rolling mill, and the track rollers 21 at the left side and the right side of the middle base track 1 are arranged on the roll changing track; then, the middle base track 1 is pushed to move on the roll changing track, the roll changing track enters an installation space of a main transmission shaft 7 in the rolling mill, and the position of the bearing trolley 3 on the middle base track 1 is adjusted until the bearing trolley 3 is positioned below the main transmission shaft 7; the supporting seat 32 is lifted by the lifting driving mechanism and supported at the lower end of the main transmission shaft 7, after the connection between the main transmission shaft 7 and the rolling mill is removed, the supporting seat 32 is slowly lowered, and then the bearing trolley 3 and the middle base track 1 are pushed to move, so that the main transmission shaft 7 is conveyed out of the rolling mill. The dismounting device provided by the invention can conveniently and efficiently dismount the main transmission shaft 7 from a narrow mounting space by using the roll changing track of the rolling mill, solves the problems of narrow space, difficulty in dismounting and hoisting, large risk factors and the like when the main transmission shaft 7 of the rolling mill is replaced, is safe and reliable, and improves the labor efficiency.
Referring to fig. 1 to 10, a preferred embodiment of the attaching and detaching device of the present invention is described in detail as follows.
In the preferred design, referring to fig. 3, 4 and 5, two supporting seats 32 for supporting the trolley 3 are respectively disposed at the front and rear ends of the trolley main body frame 31, and support and stabilize the main transmission shaft 7. Further, a V-shaped direction stabilizing plate 321 is arranged on the supporting seat 32, and the main transmission shaft 7 is placed in the V-shaped direction stabilizing plate 321 to ensure that the main transmission shaft 7 is stably located and prevented from rolling.
In this embodiment, referring to fig. 3 to 5, the lifting driving mechanism is an oil cylinder 33, the oil cylinder 33 is vertically installed on the trolley main body frame 31, the supporting seats 32 are fixed on the top of the piston rod of the oil cylinder 33, one oil cylinder 33 is installed under each supporting seat 32, the supporting seats 32 are driven by the oil cylinder 33 to lift stably, and sufficient supporting force can be provided. Of course, in other embodiments, the lift drive mechanism may take on other existing designs. Further, the carrying trolley 3 further comprises a lifting guide sleeve 34 fixedly arranged in the trolley main body frame 31 and a lifting guide column 35 arranged in the lifting guide sleeve 34, the lifting guide column 35 is fixedly connected with the lower end of the supporting seat 32, and the lifting movement of the supporting seat 32 is more stable and reliable through the guiding action of the lifting guide sleeve 34 and the lifting guide column 35.
As a preferable design, in this embodiment, referring to fig. 6, 7 and 8, the left and right sides of the middle base rail 1 are both provided with a plurality of roller assemblies 2, and the roller assemblies 2 on the left and right sides are arranged in a one-to-one manner, the roller assemblies 2 further include a mounting seat 22 and a position adjusting mechanism, the mounting seat 22 is fixed at the side edge of the middle base rail 1, the rail roller 21 is rotatably installed in the mounting seat 22, and the position adjusting mechanism can adjust the position of the rail roller 21 in the left and right directions, so that for roll changing rails with different width sizes, it is only necessary to adjust the positions of the rail rollers 21 on the left and right sides of the middle base rail 1, that is, adjust the distance between the left rail roller 21 and the right rail roller 21, so as to be applied to different roll changing rails, thereby expanding the application field of the dismounting device.
Specifically, in the present embodiment, referring to fig. 6, 7 and 8, the position adjusting mechanism includes a shaft sleeve 23 fixed in the mounting seat 22, a mounting shaft 24 mounted in the shaft sleeve 23, and a plug 25, the shaft sleeve 23 is arranged along the left-right direction, the shaft sleeve 23 is provided with a plurality of adjusting holes 231 along the axial direction thereof, the mounting shaft 24 is provided with a connecting hole, the plug 25 passes through the adjusting holes 231 and the connecting hole to axially fixedly connect the mounting shaft 24 and the shaft sleeve 23, the track roller 21 is rotatably mounted on the mounting shaft 24, when the position of the track roller 21 needs to be adjusted, the plug 25 is pulled out, the mounting shaft 24 is axially pulled out or retracted by an end distance thereof, the connecting hole thereon is aligned with different adjusting holes 231, and then the plug 25 is inserted, so that the adjustment is flexible and convenient.
As a preferable design, in this embodiment, referring to fig. 1 and 9, the dismounting device further includes extension rails 4 connected to the front and rear ends of the middle base rail 1, the extension rails 4 are connected to the middle base rail 1 in a vertically rotatable manner, specifically, a connection side plate 41 is installed at the side of the end portion of the extension rail 4, the connection side plate 41 is connected to the side of the middle base rail 1 through a rotation shaft pin 42, when the length of the middle base rail 1 is not enough, the extension rails 4 are rotated to be flush with the middle base rail 1, and when the extension rails 4 are not needed, the extension rails are rotated downward and folded to be attached to the lower end face of the middle base rail 1, and the occupied space is small. Of course, in other embodiments, the extension rail 4 may be detachably connected to the middle base rail 1, and may be installed when necessary or removed when not necessary.
In this embodiment, see fig. 9, the tip department that is far away from middle base track 1 at extension track 4, still be equipped with support post 5, support and live to be connected with extension track 4, come flat extension track 4 to support well, and, fixed a sliding sleeve 6 on extension track 4, sliding sleeve 6 cup joints and can slide from top to bottom on the support post, through locking sliding sleeve 6 on support post 5, can realize the supporting role, and adopt this design, when extension track 4 is at different height, the support post also all realizes supporting, convenient to use is nimble.
The invention also provides a process for disassembling and assembling the main transmission shaft of the rolling mill, which is carried out by adopting the disassembling and assembling device and comprises the following steps:
s1, the roller changing track of the rolling mill is well provided with a dismounting device, and the track rollers 21 on the left side and the right side of the middle base track 1 are arranged on the roller changing track.
S2, pushing the middle base track 1 to move on the roll changing track and enter the rolling mill, and adjusting the position of the bearing trolley 3 on the middle base track 1 to be positioned below the main transmission shaft 7; specifically, when the dismounting device in this embodiment is used, when the length of the middle base rail 1 is not enough to conveniently extend into the inside of the rolling mill, the extension rail 4 is rotated to be flush with the middle base rail 1, the length of the whole rail is increased, and then the rail enters the inside of the rolling mill.
S3, lifting the supporting seat 32 through the lifting driving mechanism, supporting the supporting seat at the lower end of the main transmission shaft 7, and detaching the connection between the main transmission shaft 7 and the rolling mill; slowly lowering the lifting support seat 32, pushing the bearing trolley 3 and the middle base track 1 to move, and transporting the main transmission shaft 7 out of the rolling mill; referring to fig. 10, specifically, when the dismounting device in this embodiment is used, two oil cylinders 33 are driven to synchronously extend, two supporting seats 32 are lifted to support the main transmission shaft 7, the main transmission shaft 7 falls into the V-shaped direction stabilizing plate 321, then the two oil cylinders 33 are synchronously contracted, the supporting seats 32 drive the main transmission shaft 7 to descend for a proper distance, and the main transmission shaft 7 is conveyed out of the rolling mill by pushing the bearing trolley 3 to move on the middle base rail 1 and pushing the middle base rail 1 to move on the roll changing rail.
From the above, the dismounting device provided by the invention has the advantages that the structure is stable and reliable, the use is convenient, the main transmission shaft 7 can be conveniently and efficiently dismounted from the narrow installation space by using the roll changing track of the rolling mill, the problems of narrow space, difficulty in dismounting and mounting and large risk factors in replacing the main transmission shaft 7 of the rolling mill are solved, the work is safe and reliable, the labor efficiency is improved, and the main transmission shaft 7 is not easy to roll in the transportation process and is stable and reliable.
In conclusion, the invention effectively overcomes various defects in the prior art and has high industrial utilization value.
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 (9)
1. A device for dismounting a main drive shaft of a rolling mill, said rolling mill having a roll change track located below the main drive shaft (7), characterized in that: the dismounting device comprises a middle base track (1), a bearing trolley (3) arranged on the middle base track (1) and roller assemblies (2) arranged on the left side and the right side of the middle base track (1), wherein each roller assembly (2) comprises a rotatable track roller (21), each track roller (21) is used for being placed on a roll changing track to roll, and one end of the middle base track (1) is used for extending into an installation space inside a rolling mill and is positioned below a main transmission shaft (7); bear platform truck (3) and can follow middle base track (1) back-and-forth movement, bear platform truck (3) including platform truck main part frame (31), be located supporting seat (32) on platform truck main part frame and install the lift actuating mechanism on platform truck main part frame (31), lift actuating mechanism drive supporting seat (32) elevating movement, supporting seat (32) are used for bearing final drive shaft (7), supporting seat (32) that bear platform truck (3) are two, set up respectively at platform truck main part frame (31) front and back end, and final drive shaft (7) can stable laying on two supporting seats (32).
2. The disassembling and assembling device according to claim 1, wherein: the V-shaped direction stabilizing plate (321) is arranged on the supporting seat (32), and the V-shaped direction stabilizing plate (321) is used for placing the main transmission shaft (7).
3. The dismounting device according to claim 1, characterized in that: the bearing trolley (3) further comprises a lifting guide sleeve (34) fixedly arranged in the trolley main body frame (31) and a lifting guide column (35) arranged in the lifting guide sleeve (34), and the lifting guide column (35) is fixedly connected with the supporting seat (32).
4. The dismounting device according to claim 1, characterized in that: the lifting driving mechanism is an oil cylinder (33).
5. The dismounting device according to claim 1, characterized in that: the bearing trolley (3) further comprises trolley rollers (36) arranged at the lower end of the trolley main body frame (31), and the trolley rollers (36) roll on the middle base track (1).
6. The disassembling and assembling device according to claim 1, wherein: the roller assembly (2) further comprises a mounting seat (22) and a position adjusting mechanism, the mounting seat (22) is fixed on the side edge of the middle base track (1), the track roller (21) is rotatably mounted in the mounting seat (22), and the position of the track roller (21) in the left-right direction can be adjusted by the position adjusting mechanism.
7. The dismounting device according to claim 6, characterized in that: position adjustment mechanism is including fixing axle sleeve (23) in mount pad (22), installing installation axle (24) and bolt (25) in axle sleeve (23), axle sleeve (23) are arranged along left right direction, be provided with a plurality of regulation holes (231) along its axial on axle sleeve (23), be equipped with the connecting hole on installation axle (24), bolt (25) pass regulation hole (231) and connecting hole, with installation axle (24) and axle sleeve (23) axial fixity connection, track gyro wheel (21) are rotationally installed on installation axle (24).
8. The disassembling and assembling device according to claim 1, wherein: the base is characterized by further comprising extension rails (4) which are arranged and connected to the front end and the rear end of the middle base rail (1), wherein the extension rails (4) are detachably connected with the middle base rail (1) or can be connected with the middle base rail (1) in an up-and-down rotating mode.
9. A process for dismounting a main drive shaft of a rolling mill having a roll change track located below the main drive shaft (7), characterized in that: the disassembling and assembling device is adopted to carry out, and comprises the following steps:
s1, placing the dismounting device on a roll changing track of the rolling mill, and placing track rollers (21) on the left side and the right side of a middle base track (1) on the roll changing track;
s2, pushing the middle base track (1) to move on the roll changing track and enter the rolling mill, and adjusting the position of the bearing trolley (3) on the middle base track (1) to be positioned below the main transmission shaft (7);
s3, lifting the supporting seat (32) through the lifting driving mechanism, supporting the supporting seat at the lower end of the main transmission shaft (7), and detaching the connection between the main transmission shaft (7) and the rolling mill; and slowly lowering the lifting support seat (32), pushing the bearing trolley (3) and the middle base track (1) to move, and conveying the main transmission shaft (7) out of the rolling mill.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010519303.XA CN111715699B (en) | 2020-06-09 | 2020-06-09 | Device and process for disassembling and assembling main transmission shaft of rolling mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010519303.XA CN111715699B (en) | 2020-06-09 | 2020-06-09 | Device and process for disassembling and assembling main transmission shaft of rolling mill |
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| CN111715699A CN111715699A (en) | 2020-09-29 |
| CN111715699B true CN111715699B (en) | 2022-06-24 |
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| CN202010519303.XA Active CN111715699B (en) | 2020-06-09 | 2020-06-09 | Device and process for disassembling and assembling main transmission shaft of rolling mill |
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| CN113232467B (en) * | 2021-05-17 | 2022-05-24 | 国能朔黄铁路发展有限责任公司 | Auxiliary equipment for assembling and disassembling car coupler |
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| JPS5847504A (en) * | 1981-09-16 | 1983-03-19 | Nippon Mining Co Ltd | Roll changer in rolling mill |
| JP3189240B2 (en) * | 1993-02-02 | 2001-07-16 | 石川島播磨重工業株式会社 | Roll changing equipment for rolling mill |
| CN100471589C (en) * | 2007-01-25 | 2009-03-25 | 鞍钢股份有限公司 | Quick replacing device and method for horizontal rolling mill's drive shaft of front-rear back hanging edger mill |
| CN201046462Y (en) * | 2007-06-15 | 2008-04-16 | 中国第一重型机械集团公司 | Universal joint removing device |
| CN202537042U (en) * | 2012-03-20 | 2012-11-21 | 山东科技大学 | Clothes hanger |
| CN202527476U (en) * | 2012-04-20 | 2012-11-14 | 重庆钢铁(集团)有限责任公司 | Rolling mill breast roll overhauling tool |
| CN202910073U (en) * | 2012-10-30 | 2013-05-01 | 鞍钢股份有限公司 | Device capable of quickly replacing guide ruler small vertical roll |
| CN203484550U (en) * | 2013-08-14 | 2014-03-19 | 浙江吉利汽车有限公司 | Adjustable material feeding assisting device |
| CN203938240U (en) * | 2014-06-17 | 2014-11-12 | 武汉钢铁(集团)公司 | A kind of transport vehicle for steel coils |
| CN104741382A (en) * | 2015-03-30 | 2015-07-01 | 中国重型机械研究院股份公司 | Roll changing device for rolling mill working roll |
| CN204769885U (en) * | 2015-07-21 | 2015-11-18 | 太原科技大学 | There is quick roll change buggy of rail |
| CN105966851A (en) * | 2016-05-17 | 2016-09-28 | 浙江大学 | Foldable guide rail unit |
| CN206579626U (en) * | 2017-01-24 | 2017-10-24 | 金华市农业科学研究院 | A kind of orchard conveying device |
| CN206823318U (en) * | 2017-03-21 | 2018-01-02 | 安徽禾臣新材料有限公司 | A kind of multi-functional damping cloth production filtering tank easy to remove |
| CN110497184A (en) * | 2018-05-17 | 2019-11-26 | 中冶宝钢技术服务有限公司 | The replacement tooling and replacing options of planisher rolling line adjusting device |
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| CN209403307U (en) * | 2018-12-06 | 2019-09-20 | 李伟刚 | The multi-functional combination unit for extending pedal of beehive |
| CN210691924U (en) * | 2019-11-13 | 2020-06-05 | 广州市鹏驰信息科技有限公司 | Assembly calibrating device for LED screen |
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