CN105728465A - Seamless steel tube stretch reducing mill - Google Patents
Seamless steel tube stretch reducing mill Download PDFInfo
- Publication number
- CN105728465A CN105728465A CN201610199530.2A CN201610199530A CN105728465A CN 105728465 A CN105728465 A CN 105728465A CN 201610199530 A CN201610199530 A CN 201610199530A CN 105728465 A CN105728465 A CN 105728465A
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- power set
- stretch reducing
- reducing machine
- seamless steel
- shaft
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 46
- 239000010959 steel Substances 0.000 title claims abstract description 46
- 230000005540 biological transmission Effects 0.000 claims abstract description 16
- 238000005096 rolling process Methods 0.000 claims abstract description 9
- 230000008878 coupling Effects 0.000 claims description 14
- 238000010168 coupling process Methods 0.000 claims description 14
- 238000005859 coupling reaction Methods 0.000 claims description 14
- 238000012423 maintenance Methods 0.000 abstract description 12
- 230000009467 reduction Effects 0.000 abstract description 6
- 239000003638 chemical reducing agent Substances 0.000 abstract description 3
- 239000002184 metal Substances 0.000 abstract description 3
- 229910052751 metal Inorganic materials 0.000 abstract description 3
- 230000015556 catabolic process Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 9
- 238000009434 installation Methods 0.000 description 5
- 230000008439 repair process Effects 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000033764 rhythmic process Effects 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 238000009785 tube rolling Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000005493 welding type Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B19/00—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work
- B21B19/02—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work the axes of the rollers being arranged essentially diagonally to the axis of the work, e.g. "cross" tube-rolling ; Diescher mills, Stiefel disc piercers or Stiefel rotary piercers
- B21B19/06—Rolling hollow basic material, e.g. Assel mills
- B21B19/10—Finishing, e.g. smoothing, sizing, reeling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B35/00—Drives for metal-rolling mills, e.g. hydraulic drives
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
Abstract
The invention discloses a seamless steel tube stretch reducing mill. The seamless steel tube stretch reducing mill comprises power devices (100), reduction gears (200) and roller devices (300), wherein the plurality of mutually-independent power devices (100) are arranged on a power device base (110); the plurality of mutually-independent reduction gears (200) are arranged on a reduction gear base (210), are arranged in a rolling direction of a steel tube side by side; the output ends of two power devices (100) are separately connected to the two input ends of one reduction gear (200); the plurality of mutually-independent roller devices (300) are arranged on a main machine base (310); and two groups of output ends of one reduction gear (200) are separately connected to two roller devices (300). The seamless steel tube stretch reducing mill enables spacing of racks of the stretch reducing mill adopting an independent transmission mode to be greatly reduced, so that crop loss is reduced, the metal yield is increased, the breakdown maintenance time of a speed reducer is reduced, and the yield is increased.
Description
Technical field
The present invention relates to a kind of hot continuous rolling seamless steel tube production technical field, particularly relate to a kind of seamless steel pipe stretch reducing machine device.
Background technology
Present modern hot continuous rolling seamless steel tube production technology fast development, with high-quality, high efficiency for developing direction.Stretch reducing machine is one of visual plant of seamless steel tube production technical field, is produce one of minor diameter, thin-wall steel tube most efficient method, simultaneously because single chassis sizing reduction is big, is adapted in various tube rolling method and configures.
Stretch reducing machine is generally divided into group drive (including central driving-individually differential speed regulation and central driving-concentration differential speed regulation) and the big class of driven separately two by the kind of drive.Along with the development of motor and electronic technology, driven separately mode is increasingly becoming a kind of form that current application is most popular.But the stretch reducing machine of existing driven separately exists some technical barriers not to be solved, and is therefore very limited in actual use, mainly there is following several aspect:
1) existing individual drive is due to the position limitation of motor Yu reductor, taken up space big, frame spacing is big, close-coupled cannot be realized arrange, it is easy to causing thickness of steel pipe inequality, crop loss big, metal lumber recovery is low, configuration aspects adopts combining speed reducer device, after reductor breaks down, repair and maintenance inconvenience, largely effect on output of steel tube.
2) existing driven separately high speed shaft shaft coupling due to length long, poor rigidity, when high speed rotating, dynamic balance property is poor, and whipping phenomenon is serious, the accident even causing injury to personnel, machine impaired having.
3) existing driven separately mainframe all adopts monoblock type C shape Welding Structure, and the design cycle is long, and manufacturing technology is complicated, and equipment volume is big, Heavy Weight；Especially stretch reducing machine frame quantity is when more than 14-20, brings very big inconvenience to the manufacture of equipment, transport, installation and repair and maintenance, adds equipment cost.
4) existing stretch reducing machine device roll stand all adopts split-type structural (being namely made up of) left and right two halves, when roll wear needs to change, it is necessary to after being taken apart by roll stand, roll replacing can be carried out, frame fast roll changing cannot be realized, waste time and energy；A set of pass of existing roll stand is necessarily required to a set of roll stand and makees spare part；Existing roll stand needs special roll lathe that roll is processed.
Summary of the invention
It is an object of the invention to provide one and be capable of frame compact arrangement, and improve the seamless steel pipe stretch reducing machine of metal lumber recovery and output of steel tube.
For achieving the above object, the concrete technical scheme of a kind of seamless steel pipe stretch reducing machine of the present invention is:
A kind of seamless steel pipe stretch reducing machine, including: power set, multiple separate power set are arranged on power set base；Deceleration device, multiple separate deceleration devices are arranged on deceleration device base, and are arranged side by side along steel pipe rolling direction, and the outfan of two power set is connected with two inputs of a deceleration device respectively；Roll device, multiple separate roll devices are arranged on main engine bed, and two groups of outfans of a deceleration device are connected with two roll devices respectively.
The advantage of the seamless steel pipe stretch reducing machine of the present invention is in that:
1) actuating device motor adopts double, double-decker layout pattern, reductor adopts some independent deceleration box combining forms, at a high speed, low speed spindle all adopts universal-joint spindle form, this kind of close-coupled arrangement, the stretch reducing machine frame spacing making driven separately mode significantly reduces, thus reducing crop loss, improving recovery rate of iron, reduce the reductor breakdown maintenance time, improve yield, the comprehensive advantage of whole technical scheme is to greatly reduce equipment to install and repair and maintenance work, saves maintenance cost.
2) problem solving conventional driven separately mode high speed spindle production safety hidden danger, high speed spindle maximum speed is up to 2500 revs/min, and stretch reducing machine muzzle velocity is up to 6.5m/s, thus meeting the high rolling rhythm requirement of seamless steel tube production.
3) stretch reducing machine main engine bed adopts combined framework type structure, is greatly improved design efficiency, and relatively whole welding type main engine bed weight can alleviate 20～25%, and manufacture, convenient transportation, installation and maintenance are simple, can save equipment cost greatly.
4) roll stand drive shaft system adopts new structure, roll replacing can be realized without taking frame apart, it is greatly shortened roll changing time, owing to one pass of existing frame must have a frame to make spare part, spare parts cost is significantly high, and fast roll changing greatly reduces the frame number needed for usual condition, and each pass of new structure only needs a set of roll (but not frame) to make spare part, roll can be pulled down frame and be placed on standard lathe and process, it is not necessary to special roll lathe.
Accompanying drawing explanation
Fig. 1 is the top view of the seamless steel pipe stretch reducing machine of the present invention；
Fig. 2 is the side view of the seamless steel pipe stretch reducing machine of the present invention；
Fig. 3 is the partial top view of the seamless steel pipe stretch reducing machine of the present invention；
Fig. 4 is the profile of the reductor outlet side in the seamless steel pipe stretch reducing machine of the present invention；
Fig. 5 is the profile of the motor outlet side in the seamless steel pipe stretch reducing machine of the present invention；
Fig. 6 is the side view of an embodiment of the high speed long joint-shaft device in the seamless steel pipe stretch reducing machine of the present invention；
Fig. 7 is the side view of another embodiment of the high speed long joint-shaft device in the seamless steel pipe stretch reducing machine of the present invention；
Fig. 8 is the partial enlarged drawing in Fig. 7；
Fig. 9 is the front view of the seamless steel pipe stretch reducing machine of the present invention；
Figure 10 is the partial sectional view of the roll stand in the seamless steel pipe stretch reducing machine of the present invention.
Detailed description of the invention
In order to be better understood by the purpose of the present invention, structure and function, below in conjunction with accompanying drawing, a kind of seamless steel pipe stretch reducing machine of the present invention is done further detailed description.
As shown in Figures 1 to 10, the seamless steel pipe stretch reducing machine of the present invention includes power set 100, deceleration device 200 and roll device 300.Wherein, multiple separate power set 100 are arranged on power set base 110；Multiple separate deceleration devices 200 are arranged on deceleration device base 210, and are arranged side by side along steel pipe rolling direction, and the outfan of two power set 100 is connected with two inputs of a deceleration device 200 respectively；Multiple separate roll devices 300 are arranged on main engine bed 310, and two groups of outfans of a deceleration device 200 are connected with two roll devices 300 respectively.
Further, as shown in Figure 2 and Figure 5, multiple power set 100 are set to upper and lower two-layer, the power set 100 on upper strata are arranged on upper strata power set base 110, the power set 100 of lower floor are arranged on lower floor's power set base 110, the power set 100 on upper strata and power set 100 one_to_one corresponding of lower floor, the upper strata power set 100 of two mutual correspondences are connected with same deceleration device 200 respectively with lower floor power set 100.
Further, as shown in Figure 3 and Figure 5, the power set 100 of every layer are set to front two rows, front-seat power set 100 are arranged near deceleration device 200, the power set 100 of heel row are arranged away from deceleration device 200, front-seat power set 100 are connected with deceleration device 200 by high speed short joint-shaft device 400, and the power set 100 of heel row are connected with deceleration device 200 by high speed long joint-shaft device 500.Moreover it is preferred that one in adjacent two deceleration devices 200 is connected with front-seat power set 100 by high speed short joint-shaft device 400, another one is connected with the power set 100 of heel row by high speed long joint-shaft device 500.
Specifically, as shown in Figure 5, power set 100 in the present embodiment are motor, it is provided with 24 altogether, divide double, double-deck being arranged on motor base, and be individually identified as 1#～24# motor along steel pipe rolling direction, wherein, odd number # motor is arranged on motor base upper strata, and even number # motor is arranged on motor base lower floor.
Further, as shown in Figure 4, deceleration device 200 is reductor, is provided with 12 altogether, and combination is arranged on speed reducer base after connecting, and is individually identified as 1#～12# reductor along steel pipe rolling direction.Wherein, reductor adopts some independent deceleration box combination types, and namely every reductor overlaps independent deceleration and distributor gear built with two, adopts two grades or three grades of transmissions；Every reductor includes two power shafts, is connected with the output shaft on upper strata, lower floor's motor respectively, and six output shafts are divided into two groups, are connected with two stretch reducing machine frames respectively, and namely each two stretch reducing machine frame shares a reductor.
Further, the output shaft of 1#, 2#, 5#, 6#, 9#, 10#, 13#, 14#, 17#, 18#, 21#, 22# in motor is connected with the power shaft of 1#, 3#, 5#, 7#, 9#, 11# in reductor by high speed short joint-shaft device, and the output shaft of 3#, 4#, 7#, 8#, 11#, 12#, 15#, 16#, 19#, 20#, 23#, 24# in motor is connected with the power shaft of 2#, 4#, 6#, 8#, 10#, 12# in reductor by high speed long joint-shaft device.Specifically, 1# motor is arranged on motor base upper strata, is connected with 1# reductor by high speed short joint-shaft device；2# motor is arranged on motor base lower floor, is connected with 1# reductor by high speed short joint-shaft device；3# motor is arranged on motor base upper strata, is connected with 2# reductor by high speed long joint-shaft device；4# motor is arranged on motor base lower floor, is connected with 2# reductor by high speed long joint-shaft device；Arrange by that analogy, until 24# motor and 12# reductor.
Further, as shown in Figure 6, high speed short joint-shaft device 400 includes interconnective shaft coupling and short universal-joint spindle, and high speed long joint-shaft device 500 includes interconnective shaft coupling and long universal-joint spindle.Wherein, it should be noted, adopt the length dimension of specifically high speed long joint-shaft device of this embodiment less than 3000mm, implementation result is to meet high speed rotation speed requirements, can guarantee that again requirement convenient for installation and maintenance, it should be noted that the prescription of universal-joint spindle is higher, manufacturing cost is of a relatively high.
Further, as shown in Figure 7 and Figure 8, alternatively, high speed long joint-shaft device 500 includes being sequentially connected with shaft coupling 510, intermediate connecting shaft 520, shaft coupling 530, axle prop up bearing 540, shaft coupling 550 and short universal-joint spindle 560.Wherein, shaft coupling 510,530 and intermediate connecting shaft 520 are connected as a single entity, maintenance level, and prop up bearing 540 by axle and be fixed on motor base, axle props up the bearing of bearing 540 and adopts two to single-row tapered roller bearing, back-to-back installation, lubricating system requires as oil lubrication, shaft coupling 550 can be identical with the shaft coupling in above-mentioned high speed short joint-shaft device 400 and short universal-joint spindle with size with the form of short universal-joint spindle 560, to save standby redundancy cost.In addition, it should be noted that adopt the length dimension of the specifically high speed long joint-shaft device of this embodiment more than 3000mm, implementation result is to meet high speed rotation speed requirements, can guarantee that again safety, it should be noted that it is of a relatively high that structure is more complicated, equipment installs the cost safeguarded.
Further, roll device 300 includes stretch reducing machine frame, is provided with three rolls 320 in stretch reducing machine frame.Wherein, as shown in Figure 4, every reductor includes six output shafts, and six output shafts are divided into two groups, and three output shafts in the often group outfan of reductor are connected with three rolls 320 in stretch reducing machine frame respectively through low speed spindle device 600.
Further, as shown in Figure 9, main engine bed 310 is Combined frame structure, supports framework 316 and the high-strength prestress bolt 317 connected including upper frame 311, underframe 312, left frame 313, correct frame 314, base 315, transmission connecting shaft, and each several part adopts Split type welding structure.Wherein, transmission connecting shaft supports framework 316 and is fixedly installed between upper frame 311 and underframe 312, and underframe 312 and left frame 313, correct frame 314 are fixedly installed on base 315.Thus, each framework of main engine bed can be standardized design and modularized design according to the stretch reducing machine of different series, has the features such as compact conformation, processing convenient transportation, installation and maintenance are simple, lightweight.
Further, as shown in Figure 10, roll 320 is arranged in stretch reducing machine frame by power transmission shaft 321, pull bar 322, locking nut 323 and plug screw 324, power transmission shaft 321 is ladder spline structure, it is internal that pull bar 322 is arranged on power transmission shaft 321, the end of pull bar 322 arranges locking nut 323 and plug screw 324, when roll 320 abrasion needs quick-replaceable, first dismounting plug screw 324, locking nut 323, after removing pull bar 322, power transmission shaft 321 again, roll 320 can be taken out from stretch reducing machine frame and be replaced.Thus, roll stand power transmission shaft adopts ladder spline structure, and centre is connected by pull bar, without opening roll stand during replacing roll, after removing pull bar, power transmission shaft can be removed from transmission side, roll can directly dismount from frame, substantially reduces roll replacing construction, it is achieved fast roll changing.
In the seamless steel pipe stretch reducing machine of the present invention, motor adopts AC frequency conversion form, there is excellent startability and speed adjusting performance, can adapt to stretch reducing machine and repeatedly start the working condition big with rotation speed change, thus solving the shortcoming that direct current generator electric control system relative complex, repair and maintenance requirement are high.Additionally, stretch reducing machine frame adopts outer driving type, namely three low speed spindles are connected with three rolls of stretch reducing machine frame respectively, and the advantage of this pattern is that rack construction is relatively easy, are conducive to reducing frame spacing and improving frame strength, and dismounting and repair and maintenance are convenient.
By specific embodiment, the present invention is further described above; although it is understood that; here concrete description; should not be construed as the restriction to the spirit and scope of the invention; the various amendments that above-described embodiment is made by one of ordinary skilled in the art after reading this specification, broadly fall into the scope that the present invention protects.
Claims (10)
1. a seamless steel pipe stretch reducing machine, it is characterised in that including:
Power set (100), multiple separate power set (100) are arranged on power set base (110)；
Deceleration device (200), multiple separate deceleration devices (200) are arranged on deceleration device base (210), and be arranged side by side along steel pipe rolling direction, the outfan of two power set (100) is connected with two inputs of a deceleration device (200) respectively；
Roll device (300), multiple separate roll devices (300) are arranged on main engine bed (310), and two groups of outfans of a deceleration device (200) are connected with two roll devices (300) respectively.
2. seamless steel pipe stretch reducing machine according to claim 1, it is characterized in that, multiple power set (100) are set to upper and lower two-layer, the power set (100) on upper strata are arranged on upper strata power set base (110), the power set (100) of lower floor are arranged in lower floor's power set base (110), the power set (100) on upper strata and power set (100) one_to_one corresponding of lower floor, the power set (100) on the upper strata of two mutual correspondences are connected with same deceleration device (200) respectively with the power set of lower floor (100).
3. seamless steel pipe stretch reducing machine according to claim 2, it is characterized in that, the power set (100) of every layer are set to front two rows, front-seat power set (100) are arranged near deceleration device (200), the power set (100) of heel row are arranged away from deceleration device (200), front-seat power set (100) are connected with deceleration device (200) by high speed short joint-shaft device (400), and the power set (100) of heel row are connected with deceleration device (200) by high speed long joint-shaft device (500).
4. seamless steel pipe stretch reducing machine according to claim 3, it is characterized in that, adjacent one in two deceleration devices (200) is connected with front-seat power set (100) by high speed short joint-shaft device (400), and another one is connected with the power set (100) of heel row by high speed long joint-shaft device (500).
5. the seamless steel pipe stretch reducing machine according to claim 3 or 4, it is characterised in that high speed long joint-shaft device (500) includes interconnective shaft coupling and long universal-joint spindle.
6. the seamless steel pipe stretch reducing machine according to claim 3 or 4, it is characterised in that shaft coupling that high speed long joint-shaft device (500) includes being sequentially connected with, intermediate connecting shaft, shaft coupling, axle prop up bearing, shaft coupling and short universal-joint spindle.
7. the seamless steel pipe stretch reducing machine according to claim 3 or 4, it is characterised in that high speed short joint-shaft device (400) includes interconnective shaft coupling and short universal-joint spindle.
8. seamless steel pipe stretch reducing machine according to claim 1, it is characterized in that, roll device (300) includes stretch reducing machine frame, stretch reducing machine frame is provided with three rolls, the often group outfan of deceleration device (200) includes three output shafts, and three output shafts in the often group outfan of deceleration device (200) are connected with three rolls in stretch reducing machine frame respectively through low speed spindle device (600).
9. seamless steel pipe stretch reducing machine according to claim 8, it is characterized in that, main engine bed (310) is Combined frame structure, including upper frame (311), underframe (312), left frame (313), correct frame (314), base (315), transmission connecting shaft supports framework (316) and the high-strength prestress bolt (317) connected, transmission connecting shaft supports framework (316) and is fixedly installed between upper frame (311) and underframe (312), underframe (312) and left frame (313), correct frame (314) is fixedly installed on base (315).
10. seamless steel pipe stretch reducing machine according to claim 8, it is characterized in that, roll is arranged in stretch reducing machine frame by power transmission shaft (321), pull bar (322), locking nut (323) and plug screw (324), power transmission shaft (321) is ladder spline structure, it is internal that pull bar (322) is arranged on power transmission shaft (321), and the end of pull bar (322) arranges locking nut (323) and plug screw (324).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610199530.2A CN105728465A (en) | 2016-04-01 | 2016-04-01 | Seamless steel tube stretch reducing mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610199530.2A CN105728465A (en) | 2016-04-01 | 2016-04-01 | Seamless steel tube stretch reducing mill |
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| Publication Number | Publication Date |
|---|---|
| CN105728465A true CN105728465A (en) | 2016-07-06 |
Family
ID=56252566
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610199530.2A Pending CN105728465A (en) | 2016-04-01 | 2016-04-01 | Seamless steel tube stretch reducing mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105728465A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107363100A (en) * | 2017-08-25 | 2017-11-21 | 北京京诚之星科技开发有限公司 | Transmission system for single-frame single-transmission stretch-reducing mill |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1330426A (en) * | 1970-02-25 | 1973-09-19 | Mannesmann Meer Ag | Drive for stretch-reducing mills with individual drive for duo roll stands |
| CN200943688Y (en) * | 2006-08-10 | 2007-09-05 | 山西创奇实业有限公司 | Transmission device of three roll sizing and reducing machine |
| CN101049606A (en) * | 2007-05-12 | 2007-10-10 | 太原市通泽成套设备有限公司 | Sizing stand of main engine seat for manufacturing seamless steel tube |
| CN202803746U (en) * | 2012-09-20 | 2013-03-20 | 衡阳华菱钢管有限公司 | Square pipe roll device and square pipe squaring machine with the same |
| CN204799683U (en) * | 2015-06-19 | 2015-11-25 | 洛阳鑫隆铝业有限公司 | Use in gearbox device of casting roll big roller footpath |
-
2016
- 2016-04-01 CN CN201610199530.2A patent/CN105728465A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1330426A (en) * | 1970-02-25 | 1973-09-19 | Mannesmann Meer Ag | Drive for stretch-reducing mills with individual drive for duo roll stands |
| CN200943688Y (en) * | 2006-08-10 | 2007-09-05 | 山西创奇实业有限公司 | Transmission device of three roll sizing and reducing machine |
| CN101049606A (en) * | 2007-05-12 | 2007-10-10 | 太原市通泽成套设备有限公司 | Sizing stand of main engine seat for manufacturing seamless steel tube |
| CN202803746U (en) * | 2012-09-20 | 2013-03-20 | 衡阳华菱钢管有限公司 | Square pipe roll device and square pipe squaring machine with the same |
| CN204799683U (en) * | 2015-06-19 | 2015-11-25 | 洛阳鑫隆铝业有限公司 | Use in gearbox device of casting roll big roller footpath |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107363100A (en) * | 2017-08-25 | 2017-11-21 | 北京京诚之星科技开发有限公司 | Transmission system for single-frame single-transmission stretch-reducing mill |
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Application publication date: 20160706 |