CN105414197A - Rolling mill with supporting roll changing mechanism - Google Patents

Rolling mill with supporting roll changing mechanism Download PDF

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Publication number
CN105414197A
CN105414197A CN201510916536.2A CN201510916536A CN105414197A CN 105414197 A CN105414197 A CN 105414197A CN 201510916536 A CN201510916536 A CN 201510916536A CN 105414197 A CN105414197 A CN 105414197A
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CN
China
Prior art keywords
roll
seat
lower support
backing
hydraulic cylinder
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Granted
Application number
CN201510916536.2A
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Chinese (zh)
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CN105414197B (en
Inventor
杨明冬
秦升龙
杨军
王道路
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Anhui Chujiang Special Steel Co Ltd
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Anhui Chujiang Special Steel Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Priority to CN201510916536.2A priority Critical patent/CN105414197B/en
Publication of CN105414197A publication Critical patent/CN105414197A/en
Application granted granted Critical
Publication of CN105414197B publication Critical patent/CN105414197B/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B31/00Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/08Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts

Abstract

The invention discloses a rolling mill with a supporting roll changing mechanism, and belongs to the technical field of rolling mill equipment. The rolling mill comprises a rolling mill housing, a working roll system, a supporting roll system, a power mechanism and a roll changing mechanism, wherein the supporting roll system comprises an upper supporting roll and a lower supporting roll; the two ends of the upper supporting roll are fixed on an upper supporting roll seat; the two ends of the lower supporting roll are fixed on a lower supporting roll seat; roll bottom wheels are arranged at the bottom of the lower supporting roll seat; the roll changing mechanism comprises a roll carrying mechanism and a pushing mechanism; the roll carrying mechanism comprises longitudinal hydraulic cylinders and rail plates; the longitudinal hydraulic cylinders are positioned on the two sides of the two ends of the lower supporting roll; one rail plate is fixedly connected between the output ends of the two longitudinal hydraulic cylinders on the same side of the lower supporting roll; the rail plates are positioned right below the roll bottom wheels; the pushing mechanism comprises a pushing hydraulic cylinder; and the piston rod of the pushing hydraulic cylinder is fixedly connected with the lower supporting roll seat. Through the adoption of the technical scheme, the supporting rolls can be quickly changed, the operation is simple, and the labor intensity is reduced.

Description

A kind of milling train with backup roll change mechanism
Technical field
The present invention relates to milling equipment technical field, more particularly, relate to a kind of milling train with backup roll change mechanism.
Background technology
Milling train is the plant equipment that metallurgical industry field is commonly used, comprise milling train power-equipment and working roll system, working roll system is generally all made up of backing roll, working roll etc., the power-equipment of milling train generally includes drive motors, reductor, gear-box and universal drive shaft etc., wherein universal drive shaft and backing roll are connected, and drive backing roll to operate.Milling train is when normally working, roll in roller system always will bear direction and size all in the roll-force effect of change, in long-time processing metal Strip process, the surface of upper backup roll, top working roll, bottom working roll and lower backing roll will produce uneven wearing and tearing, even produce pit, cause the metal plates and strips poor surface smoothness processed, do not reach required precision, in order to ensure crudy, must change by breaker roll in time.
Traditional roller replacing mode adopts the push-and-pull of working in coordination of traditional artificial and overhead traveling crane to realize usually, but because roller is irony, weight is large, and artificial method is not only lost time, and easily causes danger, particularly workshop is high across with under platform, in production roll change process, workshop overhead traveling crane can not may use due to equipment fault, causes roll change work difficulty to strengthen further, so various roll-changing equipment and device arise at the historic moment.
In prior art, the existing Patents about mill roll changing device is open, such as China Patent No.: 2010201363885, the applying date is on March 16th, 2010, invention and created name is: a kind of mill roll changing device, this application case comprises upper backup roll, top working roll, bottom working roll, lower backing roll, frame, changing track for roll in frame, changing track for roll and hydraulic power unit, promote oil cylinder, roller, promoting oil cylinder is fixed on cylinder support, the turnover oil pipe promoting oil cylinder is connected with hydraulic pump, lower backing roll has dismountable long connecting rod by pinned connection, long connecting rod is connected with short connecting rod by dismountable attaching nut, the other end of short connection is promoted on cylinder piston rod by dismountable being connected to of bearing pin.This application case structure is simple, cost is lower, but this application case completes by design multistage connecting rod the connection promoting piston rod and backing roll, installs loaded down with trivial details, still requires further improvement.
Summary of the invention
the technical problem that invention will solve
The object of the invention is to overcome the deficiency of the loaded down with trivial details and roll change poor effect of back-up roll extractor roll change process in prior art, provide a kind of milling train with backup roll change mechanism, fast the backing roll system entirety in milling train can be released and change, and automaticity is higher, alleviate the labour intensity of operation.
technical scheme
For achieving the above object, technical scheme provided by the invention is:
A kind of milling train with backup roll change mechanism of the present invention, comprise rolling mill base, mill housing, working roll system, backing roll system and actuating unit, also comprise roll change mechanism, working roll system and backing roll system are arranged on the centre position of both sides mill housing, described working roll system comprises top working roll and bottom working roll, the two ends of top working roll are fixed on top working roll seat, and the two ends of bottom working roll are fixed on bottom working roll seat; Described backing roll system comprises top backing up roll and lower support roll, the two ends of top backing up roll are fixed on top backing up roll seat, top backing up roll seat is also provided with screw mandrel governor motion, the two ends of lower support roll are fixed on lower support roller seat, the two bottom sides of lower support roller seat is provided with roller return pulley, described actuating unit comprises gear-box and two universal drive shafts, and two universal drive shafts are connected with one end of top backing up roll and lower support roll respectively;
Described roll change mechanism comprises carrier roller mechanism and delivery device, described carrier roller mechanism comprises longitudinal hydraulic cylinder and track plates, longitudinal hydraulic cylinder is provided with four, lay respectively at two side positions at lower support roll two ends, wherein between the output of two longitudinal hydraulic cylinders of lower support roll the same side, be fixed with track plates, two longitudinal Hydraulic Cylinder track plates do the motion of above-below direction, and described track plates is positioned at immediately below roller return pulley;
Described delivery device comprises propelling movement hydraulic cylinder, pushes hydraulic cylinder and is fixed on rolling mill base, pushes the piston rod of hydraulic cylinder and lower support roller seat is connected, and piston rod moves along the length direction of lower support roll.
Further, described carrier roller mechanism also comprises bracket and supporting plate, and described supporting plate is connected on the bracket of both sides, and bracket is separately positioned on two track plates, offers arc groove inside supporting plate, and described supporting plate is positioned at immediately below universal drive shaft.
Further, described delivery device also comprises hinge terminal lug and hinge ear seat, and hinge terminal lug is arranged on the top of piston rod, and hinge terminal lug is connected with one end of hinge ear seat, and the other end and the lower support roller seat of hinge ear seat are connected.
Further, described delivery device also comprises pulley and brace summer, and brace summer is connected in below piston rod, and the both sides of brace summer are provided with pulley.
Further, the output of described longitudinal hydraulic cylinder is provided with jaw, and track plates is positioned at the opening part of this jaw, and track plates is fixedly connected with by bearing pin with jaw.
beneficial effect
Adopt technical scheme provided by the invention, compared with prior art, there is following remarkable result:
(1) carrier roller mechanism in the present invention also comprises bracket and supporting plate, supporting plate is connected on the bracket of both sides, and bracket is separately positioned on two track plates, offers arc groove inside supporting plate, supporting plate is positioned at immediately below universal drive shaft, and the lateral surface of arc groove and universal drive shaft matches, during roller replacing operation, push hydraulic cylinder by extrapolated for lower support roller seat, the universal drive shaft one end be connected mutually with lower support roll will be sagging due to Gravitative Loads, after roll change terminates, need manually one end sagging for universal drive shaft to be lifted, and accurately navigate to the height and position matched with lower support roll, loaded down with trivial details and the waste of manpower of process, the present invention efficiently solves this problem by the design of bracket and supporting plate, during roll change, longitudinal Hydraulic Cylinder track plates moves upward, namely promoted supporting plate to move upward, universal drive shaft is made just to be positioned at the arc groove of supporting plate, push hydraulic cylinder by time extrapolated for lower support roller seat, one end that universal drive shaft and lower support roll are connected mutually is then by pallet support, still keep original position, after roll change terminates, directly universal drive shaft and lower support roll are connected, do not need universal drive shaft is lifted again and locates, simple to operate, save roll changing time, improve efficiency.
(2) delivery device in the present invention also comprises hinge terminal lug and hinge ear seat, hinge terminal lug is arranged on the top of the piston rod pushing hydraulic cylinder, one end of hinge ear seat is connected with hinge terminal lug, the other end and the lower support roller seat of hinge ear seat are connected, dismounting easy to connect between hinge terminal lug and hinge ear seat, when backing roll is released by piston rod completely that push hydraulic cylinder, terminal lug will be cut with scissors be separated with hinge ear seat, backing roll system directly hangs away by boom hoisting, when new backing roll system installs, the hinge ear seat fastened by new backing roll and hinge terminal lug are directly connected, new backing roll system can be retracted reset by the piston rod pushing hydraulic cylinder, do not need artificial propelling movement, be conducive to the raising of roll change efficiency.
(3) delivery device in the present invention also comprises pulley and brace summer, brace summer is connected in below the piston rod of propelling movement hydraulic cylinder, the both sides of brace summer are provided with pulley, pulley lays respectively on two track plates, when push the piston rod of hydraulic cylinder travel forward backing roll is released time, brace summer also runs under the effect of two side rollers, all the time be supported on below piston rod, strengthen the stationarity of piston rod movement, when the hinge terminal lug on piston rod top is separated with hinge ear seat, it is long that this brace summer can also prevent piston rod outreach, because of the problem that deadweight reason is sagging.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of the carrier roller mechanism in the present invention;
Fig. 3 is the right view of Fig. 2;
Fig. 4 is the structural representation of the delivery device in the present invention;
Fig. 5 is the B-B sectional view in Fig. 4.
Label declaration in schematic diagram: 1, mill housing; 201, top working roll; 202, top working roll seat; 203, bottom working roll; 204, bottom working roll seat; 301, top backing up roll; 302, top backing up roll seat; 303, lower support roll; 304, lower support roller seat; 305, roller return pulley; 401, longitudinal hydraulic cylinder; 402, jaw; 403, bearing pin; 404, track plates; 501, bracket; 502, supporting plate; 6, universal drive shaft; 7, hydraulic cylinder is pushed; 701, piston rod; 702, terminal lug is cut with scissors; 703, ear seat is cut with scissors; 704, pulley; 705, brace summer.
Detailed description of the invention
For understanding content of the present invention further, below in conjunction with drawings and Examples, the present invention is described in detail.
embodiment 1
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4 and Fig. 5, a kind of milling train with backup roll change mechanism of the present embodiment, comprise rolling mill base, mill housing 1, working roll system, backing roll system, actuating unit and roll change mechanism, working roll system and backing roll system are arranged on the centre position of both sides mill housing 1, working roll system comprises top working roll 201 and bottom working roll 203, the two ends of top working roll 201 are fixed on top working roll seat 202, and the two ends of bottom working roll 203 are fixed on bottom working roll seat 204; Backing roll system comprises top backing up roll 301 and lower support roll 303, and the two ends of top backing up roll 301 are fixed on top backing up roll seat 302, and top backing up roll seat 302 is also provided with screw mandrel governor motion, can regulate lifting and the pressed status of top backing up roll 301; The two ends of lower support roll 303 are fixed on lower support roller seat 304, the two bottom sides of lower support roller seat 304 is provided with roller return pulley 305, actuating unit comprises gear-box and two universal drive shafts, 6, two universal drive shafts 6 are connected with one end of top backing up roll 301 and lower support roll 303 respectively.
Roll change mechanism comprises carrier roller mechanism and delivery device, carrier roller mechanism comprises longitudinal hydraulic cylinder 401 and track plates 404, longitudinal hydraulic cylinder 401 is provided with four, lay respectively at two side positions at lower support roll 303 two ends, wherein between the output of two longitudinal hydraulic cylinders 401 of lower support roll 303 the same side, be fixed with track plates 404, concrete connected mode is: the output of longitudinal hydraulic cylinder 401 is provided with jaw 402, track plates 404 is positioned at the opening part of this jaw 402, track plates 404 is fixedly connected with by bearing pin 403 with jaw 402, track plates 404 can be regulated by the position of bearing pin 403 with the engagement height of jaw 402, when carrying out roll change action, two longitudinal hydraulic cylinders 401 promote track plates 404 and move upward, track plates 404 need be made to contact with the roller return pulley 305 directly over it, and this jaw 402 and bearing pin 403 design can realize when track plates 404 fails accurately to contact with roller return pulley 305, can the height of manual adjustments track plates 404, guarantee to contact with roller return pulley 305.
Carrier roller mechanism also comprises bracket 501 and supporting plate 502, supporting plate 502 is connected on the bracket 501 of both sides, bracket 501 is separately positioned on two track plates 404, arc groove is offered inside supporting plate 502, the lateral surface of this arc groove and universal drive shaft 6 matches, and supporting plate 502 is positioned at immediately below universal drive shaft 6; Because one end of top backing up roll 301 and lower support roll 303 is all fixed with universal drive shaft 6, so carrier roller mechanism is provided with two groups of brackets 501 and supporting plate 502 altogether, the height often organizing bracket 501 and supporting plate 502 designs according to the differing heights of two universal drive shafts 6.
Delivery device comprises propelling movement hydraulic cylinder 7, pushing hydraulic cylinder 7 is fixed on rolling mill base, piston rod 701 top pushing hydraulic cylinder 7 arranges hinged terminal lug 702, one end of hinge ear seat 703 is connected with hinge terminal lug 702, the other end and the lower support roller seat 304 of hinge ear seat 703 are connected, piston rod 701 moves along the length direction of lower support roll 303, adopts very easy-to-dismount connected mode, as pin connects between hinge terminal lug 702 and hinge ear seat 703; Brace summer 705 is also fixed with below piston rod 701, the both sides of brace summer 705 are provided with pulley 704, just be positioned on two track plates 404 when pulley 704 is lifted on track plates 404, when piston rod 701 moves, brace summer 705 by pulley 704 smooth sliding on track plates 404, and is supported on below piston rod 701 all the time.
A kind of milling train with backup roll change mechanism of the present embodiment, concrete roll change process is as follows:
Step one: lifting of top backing up roll 301;
Regulate the screw mandrel governor motion on top backing up roll seat 302, whole top backing up roll 301 is lifted a segment distance, departs from the working roll system of below, the working roll system of centre is released.
Step 2: working roll system is released;
After step one terminates, adopt workroll change first whole working roll system to be released, be convenient to follow-up backing roll system to be released as a whole together.
Step 3: start longitudinal hydraulic cylinder 401;
After step 2 terminates, cushion block is placed between top backing up roll seat 302 and lower support roller seat 304, then screw mandrel adjustment structure and top backing up roll seat 302 are departed from, make top backing up roll 301 stable support above lower support roll 303, integrally can be pushed out roll change; Four longitudinal hydraulic cylinders 401 are started simultaneously, the output of longitudinal hydraulic cylinder 401 promotes two track plates 404 and moves up, track plates 404 is contacted with the roller return pulley 305 on lower support roller seat 304 respectively, two groups of supporting plates 502 now on track plates 404 also arrive the height and position at two universal drive shaft 6 places just respectively, the lateral surface of the arc groove in supporting plate 502 and universal drive shaft 6 matches, and two universal drive shafts 6 are supported by two groups of supporting plates 502 respectively.
Step 4: start and push hydraulic cylinder 7;
After step 3 terminates, start and push hydraulic cylinder 7, the piston rod 701 pushing hydraulic cylinder 7 promotes lower support roller seat 304 and moves on track plates 404, because top backing up roll 301 stable support is above lower support roll 303, top backing up roll 301 is also released together, and now two universal drive shafts 6 depart from top backing up roll 301, lower support roll 303 respectively, but because two universal drive shafts 6 are respectively by two groups of supporting plate 502 perfection supports, so universal drive shaft 6 still keeps original position, sagging can not be there is because of deadweight reason; Due to piston rod 701 promote lower support roller seat 304 motion be rolled on track plates 404 by roller return pulley 305, so operate steadily and less to the wearing and tearing of lower support roller seat 304, the service life of lower support roller seat 304 can not be affected, also can service life of advancing the track plate 404; Lower support roll 303 is shifted onto outside mill housing 1 by final piston rod 701 together with top backing up roll 301.
Step 5: the installation of new backing roll system;
After step 4 terminates, the hinge terminal lug 702 on piston rod 701 top and hinge ear seat 703 are separated, first whole backing roll system is hung out together with the hinge ear seat 703 be connected on lower support roller seat 304, owing to being also fixed with brace summer 705 below piston rod 701, when piston rod 701 moves, brace summer 705 is namely by pulley 704 smooth sliding on track plates 404, and be supported on below piston rod 701 all the time, so sagging phenomenon of conducting oneself with dignity can not appear in piston rod 701 because the distance of stretching motion is long, be convenient to cut with scissors terminal lug 702 and cut with scissors reconnecting of ear seat 703; Then the new backing roll system after replacing is placed on track plates 404, the hinge ear seat 703 hinge terminal lug 702 on piston rod 701 top and new backing roll fastened is connected, push hydraulic cylinder 7 and new backing roll system can be retracted reset, complete roll change process, because two universal drive shafts 6 are supported by two groups of supporting plates 502 respectively, still keep original position, so do not need again to lift, can directly be connected with the lower support roll 303 newly changed and top backing up roll 301.
Schematically above be described the present invention and embodiment thereof, this description does not have restricted, and also just one of the embodiments of the present invention shown in accompanying drawing, actual structure is not limited thereto.So, if those of ordinary skill in the art enlightens by it, when not departing from the invention aim, designing the frame mode similar to this technical scheme and embodiment without creationary, all should protection scope of the present invention be belonged to.

Claims (5)

1. one kind has the milling train of backup roll change mechanism, comprise rolling mill base, mill housing (1), working roll system, backing roll system and actuating unit, it is characterized in that: also comprise roll change mechanism, working roll system and backing roll system are arranged on the centre position of both sides mill housing (1), described working roll system comprises top working roll (201) and bottom working roll (203), the two ends of top working roll (201) are fixed on top working roll seat (202), and the two ends of bottom working roll (203) are fixed on bottom working roll seat (204); Described backing roll system comprises top backing up roll (301) and lower support roll (303), the two ends of top backing up roll (301) are fixed on top backing up roll seat (302), (302) are also provided with screw mandrel governor motion to top backing up roll seat, the two ends of lower support roll (303) are fixed on lower support roller seat (304), the two bottom sides of lower support roller seat (304) is provided with roller return pulley (305), described actuating unit comprises gear-box and two universal drive shafts (6), and two universal drive shafts (6) are connected with one end of top backing up roll (301) and lower support roll (303) respectively;
Described roll change mechanism comprises carrier roller mechanism and delivery device, described carrier roller mechanism comprises longitudinal hydraulic cylinder (401) and track plates (404), longitudinal hydraulic cylinder (401) is provided with four, lay respectively at two side positions at lower support roll (303) two ends, track plates (404) is fixed with between the output being wherein positioned at two longitudinal hydraulic cylinders (401) of lower support roll (303) the same side, two longitudinal hydraulic cylinders (401) promote the motion that track plates (404) does above-below direction, and described track plates (404) is positioned at immediately below roller return pulley (305);
Described delivery device comprises propelling movement hydraulic cylinder (7), pushing hydraulic cylinder (7) is fixed on rolling mill base, the piston rod (701) and the lower support roller seat (304) that push hydraulic cylinder (7) are connected, and piston rod (701) moves along the length direction of lower support roll (303).
2. a kind of milling train with backup roll change mechanism according to claim 1, it is characterized in that: described carrier roller mechanism also comprises bracket (501) and supporting plate (502), described supporting plate (502) is connected on the bracket (501) of both sides, bracket (501) is separately positioned on two track plates (404), supporting plate (502) inner side offers arc groove, and described supporting plate (501) is positioned at immediately below universal drive shaft (6).
3. a kind of milling train with backup roll change mechanism according to claim 1, it is characterized in that: described delivery device also comprises hinge terminal lug (702) and hinge ear seat (703), hinge terminal lug (702) is arranged on the top of piston rod (701), hinge terminal lug (70w) is connected with one end of hinge ear seat (703), and the other end and the lower support roller seat (304) of hinge ear seat (703) are connected.
4. a kind of milling train with backup roll change mechanism according to claim 3, it is characterized in that: described delivery device also comprises pulley (704) and brace summer (705), brace summer (705) is connected in piston rod (701) below, and the both sides of brace summer (705) are provided with pulley (704).
5. a kind of milling train with backup roll change mechanism according to claim 1 and 2, it is characterized in that: the output of described longitudinal hydraulic cylinder (401) is provided with jaw (402), track plates (404) is positioned at the opening part of this jaw (402), and track plates (404) is fixedly connected with by bearing pin (403) with jaw (402).
CN201510916536.2A 2015-12-14 2015-12-14 A kind of milling train with backup roll change mechanism Active CN105414197B (en)

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CN105414197B CN105414197B (en) 2018-02-23

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109108365A (en) * 2018-10-25 2019-01-01 江苏亚威机床股份有限公司 A kind of novel drum type flying shearing machine
CN110170533A (en) * 2019-06-24 2019-08-27 中冶南方工程技术有限公司 A kind of breast roll changing rig
CN113953380A (en) * 2021-07-21 2022-01-21 武汉科技大学 Equipment and method for facilitating roll replacement of roll type straightening machine

Citations (8)

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Publication number Priority date Publication date Assignee Title
GB1009860A (en) * 1962-08-15 1965-11-17 United Eng Foundry Co Roll changing apparatus
JPS5739015A (en) * 1980-08-18 1982-03-04 Kawasaki Steel Corp Replacing method for roll of two-stage skin pass mill
CN1358585A (en) * 2000-12-13 2002-07-17 三菱重工业株式会社 Roller changing equipment and method for rolling machine
CN1498141A (en) * 2001-08-06 2004-05-19 SMS�����ɷݹ�˾ Device for changing work rolls and back-up rolls of strip mill
CN201702177U (en) * 2010-03-16 2011-01-12 精美铝业有限公司 Rolling mill roller replacing device
CN102441575A (en) * 2011-10-26 2012-05-09 太原重工股份有限公司 Device for replacing rollers of pilger seamless tube mill
CN202316529U (en) * 2011-09-21 2012-07-11 天津市中重科技工程有限公司 Connecting shaft support bracket
CN204294620U (en) * 2014-10-29 2015-04-29 武汉钢铁(集团)公司 A kind of multi-roll mill

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1009860A (en) * 1962-08-15 1965-11-17 United Eng Foundry Co Roll changing apparatus
JPS5739015A (en) * 1980-08-18 1982-03-04 Kawasaki Steel Corp Replacing method for roll of two-stage skin pass mill
CN1358585A (en) * 2000-12-13 2002-07-17 三菱重工业株式会社 Roller changing equipment and method for rolling machine
CN1498141A (en) * 2001-08-06 2004-05-19 SMS�����ɷݹ�˾ Device for changing work rolls and back-up rolls of strip mill
CN201702177U (en) * 2010-03-16 2011-01-12 精美铝业有限公司 Rolling mill roller replacing device
CN202316529U (en) * 2011-09-21 2012-07-11 天津市中重科技工程有限公司 Connecting shaft support bracket
CN102441575A (en) * 2011-10-26 2012-05-09 太原重工股份有限公司 Device for replacing rollers of pilger seamless tube mill
CN204294620U (en) * 2014-10-29 2015-04-29 武汉钢铁(集团)公司 A kind of multi-roll mill

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109108365A (en) * 2018-10-25 2019-01-01 江苏亚威机床股份有限公司 A kind of novel drum type flying shearing machine
CN110170533A (en) * 2019-06-24 2019-08-27 中冶南方工程技术有限公司 A kind of breast roll changing rig
CN110170533B (en) * 2019-06-24 2024-01-26 中冶南方工程技术有限公司 Frame roller roll changing device
CN113953380A (en) * 2021-07-21 2022-01-21 武汉科技大学 Equipment and method for facilitating roll replacement of roll type straightening machine

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