CN114472516A - Roller body mounting structure on steel strip processing line - Google Patents
Roller body mounting structure on steel strip processing line Download PDFInfo
- Publication number
- CN114472516A CN114472516A CN202210051929.1A CN202210051929A CN114472516A CN 114472516 A CN114472516 A CN 114472516A CN 202210051929 A CN202210051929 A CN 202210051929A CN 114472516 A CN114472516 A CN 114472516A
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- Prior art keywords
- seat
- roller seat
- roll
- upper roller
- groove
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 24
- 239000010959 steel Substances 0.000 title claims abstract description 24
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 125000003003 spiro group Chemical group 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
-
- 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
- B21B31/12—Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts by vertically displacing
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electroplating Methods And Accessories (AREA)
Abstract
The invention discloses a roller body mounting structure on a steel strip processing line, which comprises support arms, a lower roller assembly, an upper roller assembly and a first lifting mechanism, wherein the two support arms are oppositely arranged at two sides of the steel strip in the conveying direction, each support arm is provided with an accommodating groove, the lower roller assembly comprises a lower roller base which is arranged at the bottom end in the accommodating groove in a lifting way, the upper roller assembly comprises an upper roller base which is arranged at the top end in the accommodating groove in a lifting and sliding way, the top surface of the lower roller base or the bottom surface of the upper roller base is provided with a plurality of grooves, the bottom surface of the upper roller base or the top surface of the lower roller base is correspondingly provided with bulges matched with the grooves, the first lifting mechanism is used for driving the upper roller base to lift, the top surface of the upper roller seat is matched with the top wall of the containing groove or the bottom surface of the upper roller seat is matched with the top surface of the lower roller seat through the bulge and the groove, so that the upper roller seat and the lower roller seat can be pulled out together along the axial direction by external force when the rollers are changed. The invention can conveniently draw out the upper roller seat and the lower roller seat together, realizes roller change and improves the roller change efficiency.
Description
Technical Field
The invention relates to the field of steel strip processing equipment, in particular to a roller body mounting structure on a steel strip processing line.
Background
On the steel band processing line, the conveying, the pressure rolling or the level and smooth etc. of steel band are generally through two upper and lower roll body cooperation centre gripping steel band, and the roll body needs regular maintenance or change roll body after operating a period, and at present, the change of upper and lower roll body is taken out in proper order through upper and lower roll and is changed, and roll change efficiency is lower.
Disclosure of Invention
In order to solve the problems, the invention provides a roller body mounting structure on a steel strip processing line, which can improve the roller changing efficiency.
The technical scheme of the invention is as follows: a roller body mounting structure on a steel belt processing line comprises two supporting arms, a lower roller assembly and an upper roller assembly, wherein the two supporting arms are oppositely arranged on two sides of a steel belt conveying direction, each supporting arm is provided with a containing groove along the vertical direction, a top wall is correspondingly formed above the containing groove, a bottom wall is formed below the supporting arm, the end parts of the lower roller assembly and the upper roller assembly are mounted in the containing groove, the lower roller assembly comprises a lower roller seat and a lower conveying roller, the lower roller seat is mounted at the bottom end in the containing groove in a lifting and sliding manner, the two ends of the lower conveying roller are mounted on the lower roller seat in a lifting and sliding manner, the two ends of the lower conveying roller are mounted at the top end in the containing groove in a lifting manner, the top surface of the lower roller seat or the bottom surface of the upper roller seat is provided with a plurality of grooves, and the bottom surface of the upper roller seat or the top surface of the lower roller seat is correspondingly provided with bulges matched with the plurality of grooves, the roller body mounting structure further comprises a first lifting mechanism arranged on the side wall of the accommodating groove, the first lifting mechanism is supported on the bottom surface of the upper roller seat in a propping mode and used for driving the upper roller seat to lift, the top of the upper roller seat is matched with the top wall of the accommodating groove or the bottom surface of the upper roller seat is matched with the top surface of the lower roller seat through a protrusion and a groove, and the upper roller seat and the lower roller seat are drawn out together along the axial direction through external force when the rollers are replaced.
Further, the roller body mounting structure comprises a plurality of clamping fixing structures for fixing the upper roller seat and the lower roller seat, and clamping grooves are formed in the side faces of the upper roller seat and the lower roller seat and used for clamping and fixing the clamping fixing structures.
Further, each centre gripping fixed knot constructs includes splint and presss from both sides and moves the actuating cylinder, and splint slidable ground is installed on the support arm and has been seted up the mounting groove on the splint, presss from both sides and moves the actuating cylinder and pass the mounting groove setting on the support arm, and presss from both sides the telescopic link one end that moves the actuating cylinder and be connected with splint for the clamping groove of drive splint card dress at last roller seat or lower roller seat is held.
Furthermore, each clamping and fixing structure comprises a plurality of bolts, the clamping plate is provided with a long hole, the stud of each bolt penetrates through the long hole to be screwed on the supporting arm, and the nut end is pressed against two sides of the long hole on the clamping plate so as to lock the sliding clamping plate.
Furthermore, a top groove is formed in the top wall of the containing groove, so that a matching block is formed at the top end of the upper roller seat and is correspondingly matched with the top groove.
Furthermore, the first lifting mechanism comprises a first driving cylinder, the first driving cylinder is fixedly arranged on the side walls of the two sides of the accommodating groove, and piston rods of the first driving cylinder are respectively propped against the bottom surfaces of the two sides of the upper roller seat and are used for supporting the upper roller seat or driving the upper roller seat to lift.
Further, the roller body mounting structure comprises a second lifting mechanism, the second lifting mechanism comprises a second driving cylinder, and the second driving cylinder is mounted on the bottom wall of the accommodating groove and used for driving the lower roller seat to lift.
Furthermore, a supporting block is fixedly arranged on the side wall of the bottom end of the accommodating groove and used for supporting the lower roller seat, and the second driving cylinder is arranged between the two supporting blocks.
Compared with the prior art: the invention provides a roller body mounting structure on a steel strip processing line, wherein an upper roller seat is driven to lift by a first driving cylinder, a lower roller seat is driven to lift by a second driving cylinder, so that correspondingly formed bulges and grooves on the matching surfaces of the upper roller seat and the lower roller seat are mutually matched and clamped, and the upper roller seat and the lower roller seat are drawn out together by a roller changing device, thereby realizing quick roller changing and improving the efficiency of roller changing.
Drawings
Fig. 1 is a schematic structural view of a roll body mounting structure on a steel strip processing line of the present invention.
Detailed Description
The following describes in further detail embodiments of the present invention with reference to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
Referring to fig. 1, a roller mounting structure on a steel strip processing line includes two support arms 1, a lower roller assembly 2, an upper roller assembly 3 and a first lifting mechanism 4, the two support arms 1 are oppositely disposed at two sides of a steel strip conveying direction, each support arm 1 is provided with a receiving groove 11 along a vertical direction, the receiving groove 11 penetrates through the support arms 1 in an axial direction of the roller, a top wall is correspondingly formed above the receiving groove 11 on each support arm 1, a bottom wall is formed below the receiving groove 11, and the receiving groove 11 is used for mounting end portions of the lower roller assembly 2 and the upper roller assembly 3. The first lifting mechanism 4 is used for driving the upper roller assembly 3 to move towards the lower roller assembly 2 so as to cooperate with the lower roller assembly 2 to clamp the steel strip.
The lower roll component 2 comprises a lower roll seat 21 and a lower conveying roll 22, the lower roll seat 21 is arranged at the lower end in the accommodating groove 11 of the supporting arm 1 in a lifting and sliding manner, and two ends of the lower conveying roll 22 are arranged on the lower roll seat 21 which is arranged oppositely and rotate along the axial lead thereof. The upper roll component 3 comprises an upper roll seat 31 and an upper conveying roll 32, and the upper roll seat 31 is arranged at the upper end in the accommodating groove 11 of the supporting arm 1 in a lifting and sliding manner. A matching block (not shown) is formed at the top end of the upper roller seat 31, and a top groove matched with the matching block is correspondingly formed at the bottom side of the top wall of the containing groove 11 so that the matching block at the top end of the upper roller seat 31 can be clamped and matched. Both ends of the upper transfer roller 32 are mounted on the upper roller base 31 above the lower transfer roller 22 for cooperating with the lower transfer roller 22 to clamp the steel strip.
The top surface of the lower roller seat 21 or the bottom surface of the upper roller seat 31 is provided with a plurality of grooves 211, and the bottom surface of the upper roller seat 31 or the top surface of the lower roller seat 21 is correspondingly provided with protrusions 311 matched with the plurality of grooves 211. The first lifting mechanism 4 is disposed on the side walls of the two sides of the accommodating groove 11, and respectively supports against the bottom surfaces of the two sides of the upper roller seat 31, so as to drive the upper roller seat 31 to lift. When the upper roller base 31 is installed, the first lifting mechanism 4 drives the matching block at the top end of the upper roller base 31 to be matched in the top groove on the top wall of the accommodating groove 11, so that the upper conveying roller 32 on the upper roller base 31 can stably rotate.
When the roller needs to be changed, the first lifting mechanism 4 drives the upper roller seat 31 to move downwards, the bulge 311 of the upper roller seat 31 is downwards clamped in the groove 211 of the lower roller seat 21, the upper roller seat 31 and the lower roller seat 21 are clamped and fixed, and then the upper roller seat 31 and the lower roller seat 21 are axially drawn out together through a roller changing device (not shown), so that the upper roller body and the lower roller body can be simultaneously changed, and the upper roller seat 31 and the lower roller seat 21 do not need to be separately drawn out one by one for changing the rollers; after the roll changing, the clamped upper roll seat 31 and the clamped lower roll seat 21 are pushed into the accommodating groove 11 through the roll changing device, the first lifting mechanism 4 drives the upper roll seat 31 to ascend, the matching block of the upper roll seat 31 is clamped into the top groove on the top wall of the accommodating groove 11, and a preset gap is correspondingly isolated between the upper roll and the lower roll so as to allow a clamping steel belt to pass through or allow the steel belt to pass around in an S shape. In this embodiment, the first lifting mechanism 4 includes a first driving cylinder 41, the first driving cylinder 41 is fixedly disposed on the side wall of the accommodating groove 11, and one end of a piston rod of the first driving cylinder is supported against the bottom surface of the upper roller seat 31, so as to support the upper roller seat 31 or drive the upper roller seat 31 to lift. The first driving cylinder 41 may be a hydraulic cylinder or an air cylinder.
The roller body mounting structure further comprises a plurality of clamping and fixing structures 5 for fixing the upper roller seat 31 and the lower roller seat 21. The side surfaces of the upper roller seat 31 and the lower roller seat 21 are respectively provided with a clamping groove for the clamping fixing structure 5 to be clamped and fixed, so that the upper roller seat 31 and the lower roller seat 21 are prevented from shaking towards the two sides of the steel strip processing line in the accommodating groove 11. Each clamping and fixing structure 5 comprises a clamping plate 51 and a clamping and moving driving cylinder 52, wherein the clamping plate 51 is laterally slidably mounted on the supporting arm 1 and correspondingly slidably clamped into clamping grooves on the side surfaces of the upper roller seat 31 and the lower roller seat 21 to clamp the upper roller seat 31 and the lower roller seat 21. The clamping plate 51 is provided with a mounting groove 511, and the clamping and moving driving cylinder 52 is arranged on the supporting arm 1 through the mounting groove 511 and is used for driving the clamping plate 51 to slide. One end of the telescopic rod of the clamping driving cylinder 52 is connected with the clamping plate 51 to drive the clamping plate 51 to slide, after the upper roller seat 31 and the lower roller seat 21 are installed in the accommodating groove 11, the clamping driving cylinder 52 drives the clamping plate 51 to be clamped in the clamping groove of the upper roller seat 31 or the lower roller seat 21 to fix the upper roller seat 31 or the lower roller seat 21. In this embodiment, the clamping driving cylinder 52 is an air cylinder.
Further, each centre gripping fixed knot constructs 5 and includes a plurality of bolts 53, and splint 51 both sides have seted up a plurality of rectangular holes along pressing from both sides the direction of moving, and rectangular hole relative distribution is on splint 51 top and bottom, and the double-screw bolt of each bolt 53 passes rectangular hole spiro union on support arm 1, and the nut end is pressed and is supported on splint 51 rectangular hole both sides to supply to lock splint 51 after the slip. Each clamping and fixing structure 5 further comprises a connecting block 54, the connecting block 54 is fixedly arranged on the clamping plate 51 and provided with a bayonet, and one end of the telescopic rod of the clamping and moving driving cylinder 52 is buckled in the bayonet of the connecting block 54.
In addition, the roller body mounting structure comprises a second lifting mechanism 6, the second lifting mechanism 6 comprises a second driving cylinder 61, the second driving cylinder 61 is mounted on the bottom wall of the accommodating groove 11 and is used for driving the lower roller seat 21 to lift, and the second driving cylinder 61 adopts a hydraulic cylinder. And a supporting block 12 is fixedly arranged on the side wall of the bottom end of the accommodating groove 11 so as to support the lower roller seat 21 in a conventional state. A second driving cylinder 61 is installed between the two support blocks 12 to drive the lower roller base 21 to ascend at the time of roll change.
In summary, when the roll body mounting structure on the steel strip processing line of the invention is used for roll changing, the second driving cylinder 61 drives the lower roll seat 21 to ascend and separate from the supporting block 12, the first driving cylinder 41 drives the upper roll seat 31 to move towards the lower roll seat 21, so that the protrusion 311 between the upper roll seat and the lower roll seat is matched with the groove 211, after the upper roll seat 31 and the lower roll seat 21 are matched and clamped with each other, the bolt 53 is released to lock the clamping plate 51, the clamping plate 51 is driven by the clamping driving cylinder 52 to move out of the clamping groove of the upper roll seat 31 and the lower roll seat 21, the fixation between the upper roll seat 31 and the lower roll seat 21 is released, the upper roll seat 31 and the lower roll seat 21 are drawn out together by the roll changing device, the fast roll changing is realized, and the roll changing efficiency is improved.
Any combination of the various embodiments of the present invention should be considered as disclosed in the present invention, unless the inventive concept is contrary to the present invention; within the scope of the technical idea of the invention, any combination of various simple modifications and different embodiments of the technical solution without departing from the inventive idea of the present invention shall fall within the protection scope of the present invention.
Claims (8)
1. Roll body mounting structure on steel band processing line, including two support arms (1), lower roll subassembly (2) and go up roll subassembly (3), two support arm (1) sets up in steel band direction of delivery both sides relatively, and storage tank (11) have been seted up along vertical direction in each support arm (1), correspondingly forms the roof above storage tank (11), forms the diapire below it, and lower roll subassembly (2) and last roll subassembly (3) tip are installed in storage tank (11), lower roll subassembly (2) include lower roll seat (21) and lower transfer roller (22), and lower roll seat (21) liftable be installed at bottom in storage tank (11) with sliding, and the both ends of lower transfer roller (22) are installed on lower roll seat (21), go up roll subassembly (3) including last roll seat (31) and last transfer roller (32), go up roll seat (31) and install top in storage tank (11) liftable, both ends of going up conveying roller (32) are installed on last roller seat (31), its characterized in that: a plurality of grooves (211) are formed in the top surface of the lower roller seat (21) or the bottom surface of the upper roller seat (31), protrusions (311) matched with the grooves (211) are correspondingly arranged on the bottom surface of the upper roller seat (31) or the top surface of the lower roller seat (21), the roller body mounting structure further comprises a first lifting mechanism (4) arranged on the side wall of the accommodating groove (11), the first lifting mechanism is supported on the bottom surface of the upper roller seat (31) and used for driving the upper roller seat (31) to lift, the top of the upper roller seat (31) is matched with the top wall of the accommodating groove (11) or the bottom surface of the upper roller seat (31) and the top surface of the lower roller seat (21) are matched with the grooves (211) through the protrusions (311), and therefore the upper roller seat (31) and the lower roller seat (21) can be pulled out together through external force along the axial direction when rollers are replaced.
2. A roll body mounting structure according to claim 1, wherein: including a plurality of centre gripping fixed knot construct (5) that are used for fixed upper roll seat (31) and lower roll seat (21), all seted up on the side of upper roll seat (31) and lower roll seat (21) and pressed from both sides the groove to supply centre gripping fixed knot construct (5) card to go into fixedly.
3. A roll body mounting structure according to claim 2, wherein: each clamping and fixing structure (5) comprises a clamping plate (51) and a clamping and moving driving cylinder (52), the clamping plate (51) is slidably mounted on the supporting arm (1) and the clamping plate (51) is provided with a mounting groove (511), the clamping and moving driving cylinder (52) penetrates through the mounting groove (511) to be arranged on the supporting arm (1), one end of a telescopic rod of the clamping and moving driving cylinder (52) is connected with the clamping plate (51) and is used for driving the clamping plate (51) to be clamped in a clamping groove of the upper roller seat (31) or the lower roller seat (21).
4. A roll body mounting structure according to claim 3, wherein: each clamping and fixing structure (5) comprises a plurality of bolts (53), the clamping plate (51) is provided with a long hole, a stud of each bolt (53) penetrates through the long hole to be screwed on the supporting arm (1), and the nut end is pressed against the two sides of the long hole in the clamping plate (51) so as to lock the sliding clamping plate (51).
5. A roll body mounting structure according to claim 1, wherein: the top wall of the containing groove (11) is provided with a top groove, so that the top end of the upper roller seat (31) is provided with a matching block for correspondingly matching with the top groove.
6. A roll body mounting structure according to claim 1, wherein: the first lifting mechanism (4) comprises a first driving cylinder (41), the first driving cylinder (41) is fixedly arranged on the side walls of the two sides of the accommodating groove (11), and piston rods of the first driving cylinder respectively prop against the bottom surfaces of the two sides of the upper roller seat (31) and are used for supporting the upper roller seat (31) or driving the upper roller seat (31) to lift.
7. A roll body mounting structure according to claim 1, wherein: the roller lifting mechanism comprises a second lifting mechanism (6), wherein the second lifting mechanism (6) comprises a second driving cylinder (61), and the second driving cylinder (61) is installed on the bottom wall of the accommodating groove (11) and used for driving the lower roller seat (21) to lift.
8. A roll body mounting structure according to claim 7, wherein: the bottom end side wall of the containing groove (11) is fixedly provided with a supporting block (12) for supporting the lower roller seat (21), and the second driving cylinder (61) is arranged between the two supporting blocks (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210051929.1A CN114472516A (en) | 2022-01-17 | 2022-01-17 | Roller body mounting structure on steel strip processing line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210051929.1A CN114472516A (en) | 2022-01-17 | 2022-01-17 | Roller body mounting structure on steel strip processing line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114472516A true CN114472516A (en) | 2022-05-13 |
Family
ID=81511208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210051929.1A Pending CN114472516A (en) | 2022-01-17 | 2022-01-17 | Roller body mounting structure on steel strip processing line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114472516A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3583194A (en) * | 1968-03-20 | 1971-06-08 | Us Steel Corp The | Horizontal roll stand for slab mill |
| JPH0780554A (en) * | 1993-09-07 | 1995-03-28 | Daido Kikai Seisakusho:Kk | Method and device for preventing slip of roll bender |
| CN201127955Y (en) * | 2007-11-22 | 2008-10-08 | 中国第一重型机械集团公司 | Complete hydraulic pressing type six-roller cold calender |
| CN201127950Y (en) * | 2007-11-22 | 2008-10-08 | 中国第一重型机械集团公司 | Bearing bracket device of rolling mill working roll |
| CN203936128U (en) * | 2014-07-09 | 2014-11-12 | 北京京诚瑞信长材工程技术有限公司 | A kind of milling train |
| CN104858238A (en) * | 2015-05-26 | 2015-08-26 | 中冶陕压重工设备有限公司 | Roll changing mechanism for working roll of rolling mill |
| CN205042883U (en) * | 2015-09-30 | 2016-02-24 | 宝山钢铁股份有限公司 | Steel rolling work roller |
| CN205200143U (en) * | 2015-09-24 | 2016-05-04 | 新余钢铁集团有限公司 | Working roll axial locking structure |
| CN206028326U (en) * | 2016-08-31 | 2017-03-22 | 天津市中重科技工程有限公司 | Third roller shaft holds bottom working roll axial hydraulic adjusting device on rolling mill |
| CN210586395U (en) * | 2019-07-11 | 2020-05-22 | 武汉乾冶众联科技有限公司 | Continuous rolling mill outlet pinch roll device |
| CN212146204U (en) * | 2020-03-30 | 2020-12-15 | 常州宝菱重工机械有限公司 | Roller changing device capable of quickly replacing oil scraping roller |
-
2022
- 2022-01-17 CN CN202210051929.1A patent/CN114472516A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3583194A (en) * | 1968-03-20 | 1971-06-08 | Us Steel Corp The | Horizontal roll stand for slab mill |
| JPH0780554A (en) * | 1993-09-07 | 1995-03-28 | Daido Kikai Seisakusho:Kk | Method and device for preventing slip of roll bender |
| CN201127955Y (en) * | 2007-11-22 | 2008-10-08 | 中国第一重型机械集团公司 | Complete hydraulic pressing type six-roller cold calender |
| CN201127950Y (en) * | 2007-11-22 | 2008-10-08 | 中国第一重型机械集团公司 | Bearing bracket device of rolling mill working roll |
| CN203936128U (en) * | 2014-07-09 | 2014-11-12 | 北京京诚瑞信长材工程技术有限公司 | A kind of milling train |
| CN104858238A (en) * | 2015-05-26 | 2015-08-26 | 中冶陕压重工设备有限公司 | Roll changing mechanism for working roll of rolling mill |
| CN205200143U (en) * | 2015-09-24 | 2016-05-04 | 新余钢铁集团有限公司 | Working roll axial locking structure |
| CN205042883U (en) * | 2015-09-30 | 2016-02-24 | 宝山钢铁股份有限公司 | Steel rolling work roller |
| CN206028326U (en) * | 2016-08-31 | 2017-03-22 | 天津市中重科技工程有限公司 | Third roller shaft holds bottom working roll axial hydraulic adjusting device on rolling mill |
| CN210586395U (en) * | 2019-07-11 | 2020-05-22 | 武汉乾冶众联科技有限公司 | Continuous rolling mill outlet pinch roll device |
| CN212146204U (en) * | 2020-03-30 | 2020-12-15 | 常州宝菱重工机械有限公司 | Roller changing device capable of quickly replacing oil scraping roller |
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