CN103934290B - Seamless steel pipe production and three roller guide mechanisms thereof - Google Patents
Seamless steel pipe production and three roller guide mechanisms thereof Download PDFInfo
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- CN103934290B CN103934290B CN201410140338.7A CN201410140338A CN103934290B CN 103934290 B CN103934290 B CN 103934290B CN 201410140338 A CN201410140338 A CN 201410140338A CN 103934290 B CN103934290 B CN 103934290B
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Abstract
The invention discloses a kind of seamless steel pipe production and three roller guide mechanisms thereof, this three roller guides mechanism comprises; Frame; Be fixedly connected on frame, be parallel to each other and the first to the 3rd fixed axis arranged in the first equilateral triangle; Connect two parallelogram connection-rod structures of the one the second fixed axis, the one or three fixed axis respectively; Two bar linkage structures are positioned at two opposite exterior lateral sides of equilateral triangle; Be connected to the isometric three short swing arms of three fixed axis; Be connected to being parallel to each other and three rollers arranged in the second equilateral triangle of three short swing arms, roller is parallel to fixed axis; And drive two bar linkage structures with the actuator of the equidirectional rotation of same angle, drive short swing arm to rotate the three-equilateral triangle increasing to make three rollers be changed to the length of side or reduce when two bar linkage structures rotate.The present invention makes the steel pipe concentricity of production and wall thickness accuracy obtain ensureing more reliably.
Description
Technical field
The present invention relates to seamless steel pipe production, particularly relate to for seamless steel pipe production a kind of three roller guide mechanisms and there is the seamless steel pipe production of this three roller guides mechanism.
Background technology
Improving and improving along with seamless steel pipe production and technique; the demand pipe amount of the high accuracy such as oil well pipe, sleeve pipe and high alloy steel pipe, high added value increases; and modern seamless steel tube production mass, scale, the feature that becomes more meticulous, all the precision of equipment, performance are had higher requirement.The distortion of effective control pipe, hollow billet just can make the seamless steel pipe concentricity of production and wall thickness accuracy obtain ensureing more reliably.
Punch is the First visual plant controlling pipe distortion in seamless steel tube production technique, and its effect solid pipe billet is become required hollow hollow billet.It passes the degree of eccentricity of hollow billet and wall thickness tolerance plays conclusive effect to production tube, and the operations such as its follow-up tube rolling all can not be corrected the degree of eccentricity and wall thickness tolerance, can only play expansion.Therefore, high-precision production tube just has high requirement to push rod during perforation and the concentricity of punch and the guiding of outlet hollow billet, and along with the raising of production technology and product demand, people also propose more and more higher requirement to the quality of hollow billet.Piercing process requires a kind of equipment: when boring a hole, tightly clasping push rod, can keep the stability of push rod, have guide effect after perforation to hollow billet, preventing hollow billet sideslip on the impact of subsequent perforation.According to the difference of outlet capillary outer diameter, the opening degree of guiding mechanism needs to carry out rapid adjustment.
Milling train is second visual plant controlling hollow billet distortion in seamless steel tube production technique, and its effect is the hollow hollow forging hollow hollow billet being become certain wall thickness requirement.The wall thickness of milling train to end product steel pipe plays conclusive effect, and its follow-up equipment has certain influence to the bias of hollow forging and wall thickness deviation.Oblique milling seamless pipe pipe-mill in milling train, its outlet hollow forging is made spiral and is advanced, and because muzzle velocity is fast, whipping is violent, needs a kind of equipment to lead to hollow forging, prevents hollow forging from having a negative impact to waste thickness of pipe wall in whipping process.And different according to outlet hollow forging external diameter, the opening degree of guiding mechanism needs to carry out rapid adjustment.
To sum up, existing seamless steel pipe production, needs the guiding mechanism that a kind of opening is adjustable, obtains ensureing more reliably with the steel pipe concentricity and wall thickness accuracy that make production.
Summary of the invention
For problems of the prior art, the object of the present invention is to provide a kind of three roller guide mechanisms for seamless steel pipe production, with the difference according to outlet capillary outer diameter, rapid adjustment is carried out to opening degree, obtains ensureing more reliably with the steel pipe concentricity and wall thickness accuracy that make production.
Another object of the present invention is to provide a kind of seamless steel pipe production with the present invention three roller guide mechanism.
The present invention is achieved through the following technical solutions:
A kind of three roller guide mechanisms, for seamless steel pipe production, this three roller guides mechanism comprises, frame, be fixedly connected on described frame, be parallel to each other and the first fixed axis, the second fixed axis and the 3rd fixed axis arranged in the first equilateral triangle, connect the first parallelogram connection-rod structure of described first fixed axis and described second fixed axis, connect the second parallelogram connection-rod structure of described first fixed axis and described 3rd fixed axis, parallelogram connection-rod structure described in two is positioned at two opposite exterior lateral sides of described first equilateral triangle, be connected to described first fixed axis, described second fixed axis, the isometric first short swing arm of described 3rd fixed axis, the second short swing arm, the 3rd short swing arm, be connected to described first short swing arm, the second short swing arm, the 3rd short swing arm be parallel to each other and the first roller arranged in the second equilateral triangle, the second roller and the 3rd roller, described first roller is parallel to described first fixed axis, in same cross section, described second equilateral triangle overlaps with the geometric center of described first equilateral triangle, and the actuator driving described first parallelogram connection-rod structure and described second parallelogram connection-rod structure to rotate with same angle equidirectional, described first parallelogram connection-rod structure and described second parallelogram connection-rod structure drive described first short swing arm when rotating, second short swing arm, 3rd short swing arm is rotated to make described first roller, second roller and the 3rd roller are changed in three-equilateral triangular arrangement, the leg-of-mutton length of side of described three-equilateral is greater than or less than the length of side of described second equilateral triangle, described three-equilateral triangle overlaps with the geometric center of described first equilateral triangle.
Seamless steel pipe production of the present invention, has three roller guide mechanisms of the present invention.
Beneficial effect of the present invention, be, three roller guide mechanisms of the present invention, that one can ensure that center is constant, the mechanism that opening can regulate rapidly, be applied to perforator background and oblique tube mill backstage, during perforation, roller closes, three roller close together (become the length of side of equilateral triangle shorter), three roller guide mechanisms tightly clasp push rod, strengthen stability during push rod perforation, when hollow billet passes, guiding mechanism is opened to rapidly guiding position, roller is opened, the spacing of three rollers increases (also i.e. roller become the length of side of equilateral triangle to increase), hollow billet is led, the violent whipping of restriction hollow billet.During for oblique tube mill tube rolling, guiding mechanism is opened to guiding position (state that roller is opened) and leads to hollow forging, the violent whipping of restriction hollow forging.
Three roller guide mechanisms of the present invention, after mounting and adjusting is good, the parallelogram multi-connecting-rod mechanism that first Driven by Hydraulic Cylinder two is equal, two quadrilateral connecting rod rotational angles are identical, three rollers are driven to do to move with width in the same way, realize closed clamping and open guide function, by the adjustment to adjustment pad thickness, the adjustment of three roller guiding aperture sizes can be controlled; Second hydraulic cylinder is retracted and can be realized, and the opening action that upper roller is independent, may be used for discharging.When second hydraulic cylinder stretches out, clasp motionless, three rollers can be realized and be on a concentrically ringed position.Close clamping at three rollers and open in the course of action of guiding, three rollers are on the circle at same center all the time, ensure that the uniformity of three roller guide mechanisms and punch, pipe mill center line, bias and the wall thickness accuracy of steel pipe can be improved, meet the technological action requirement of equipment after punch, oblique tube mill.
Accompanying drawing explanation
Fig. 1 is three roller guide mechanism front views of the embodiment of the present invention;
Fig. 2 is the top view of Fig. 1;
Fig. 3 is the equal quadrangle schematic diagram of multi link of three roller guide mechanisms of the embodiment of the present invention;
Fig. 4 is the part drawing of the depression bar 3 of example of the present invention;
Fig. 5 is the partial sectional view of the pull bar 6 of example of the present invention.
Detailed description of the invention
The exemplary embodiments embodying feature & benefits of the present invention will describe in detail in the following description.Be understood that the present invention can have various changes in different embodiments, it neither departs from the scope of the present invention, and explanation wherein and accompanying drawing are the use when explain in itself, and is not used to limit the present invention.
The seamless steel pipe production of the embodiment of the present invention, has three roller guide mechanisms of the embodiment of the present invention, and three roller guide mechanisms of the embodiment of the present invention can be used in seamless steel pipe production.The seamless steel pipe production of the embodiment of the present invention, such as punch and oblique tube mill etc.Three roller guide mechanisms of the embodiment of the present invention, are applied particularly to (discharge end) after punch and oblique tube mill, are fix punching machine post rod, and play guide-localization effect to hollow billet and hollow forging.
Below three roller guide mechanisms of the embodiment of the present invention are specifically introduced.
As Figure 1-Figure 5, the three roller guide mechanisms for seamless steel pipe production of the embodiment of the present invention are the multi link three roller guide mechanisms that a kind of center is constant, opening is adjustable, it comprises: frame 1, first bracket 2, depression bar 3, the second bracket 4, connecting rod 5, pull bar 6, roller 7, the first hydraulic cylinder 8, second hydraulic cylinder 9, adjustment cushion block 10 and fixed axis (or claiming connecting axle) O, P, Q.
Frame 1 is the framework with the assembled welding of steel plate, it is the support of above-mentioned each parts, fixed axis O, P, Q are fixedly connected in frame 1, each fixed axis is parallel to each other and arranges in equilateral triangle, second bracket 4, first bracket 2 and depression bar 3 are arranged on fixed axis O, P, Q respectively, can rotate around fixed axis O, P, Q, and the rotation of the second bracket 4, first bracket 2 and depression bar 3 can drive the rotation of other the short swing arms on fixed axis O, P, Q, be also that the short swing arm on same fixed axis always links; Connecting rod 5 upper end is articulated with the second bracket 4 by jointed shaft A, and connecting rod 5 lower end is by hinged first bracket 2 of jointed shaft B; First bracket 2 drives the second bracket 4 to rotate by connecting rod 5; The lower end of pull bar 6 is articulated with the first bracket 2 by jointed shaft C, and the upper end thereof of pull bar 6 is in depression bar 3, and pull bar 6 can slide in the connecting shaft hole of depression bar 3; Roller 7 quantity is 3, arranged in parallel and be parallel to fixed axis O, P, Q, be respectively roller X, roller Y and roller Z, also arrange in equilateral triangle, that is circumferentially concentrically ringed at one, or perhaps the geometric center of two equilateral triangles overlaps.Roller X, roller Y and roller Z are connected to the first bracket 2 respectively by fixed axis P, fixed axis Q and fixed axis O, depression bar 3 and the second bracket 4, can by connecting rod 5 and pull bar 6 by the first hydraulic cylinder 8 drive simultaneously to center (geometric center of the above-mentioned concentrically ringed center of circle, equilateral triangle) draw close or away from; First hydraulic cylinder 8 to be fixed in frame 1, Direct driver first bracket 2, drive roller 7 to move together by the transmission of depression bar 3, second bracket 4, connecting rod 5, pull bar 6, the size that three rollers X, Y, Z surround opening (the common inscribed circles of three rollers) can be adjusted simultaneously; Second hydraulic cylinder 9 is fixed in frame 1, drives depression bar 3 separately, and the jointed shaft D of depression bar 3, along pull bar 6 slide downward, drives superposed roller Z in roller 7 to open separately, to carry out draw operation.
Why the jointed shaft D of depression bar 3 can along pull bar 6 slide downward, and as shown in Figure 4 and Figure 5, jointed shaft D is fixed on depression bar 3 by support 31, and jointed shaft D is then set on pull bar 6, and why jointed shaft D can along pull bar 6 slide downward.
Adjustment cushion block 10 to be arranged in frame 1, by carrying out mechanical position limitation to the arc surface 20 of the first bracket 2, realizes the adjustment to roller 7 opening degree size.
As depicted in figs. 1 and 2, first bracket 2 is made up of 3 angled centered by a fixed axis P short swing arm PB=PC=PY and long arm swing PS, three short swing arms are isometric, i.e. PB=PC=PY, 3 isometric short swing arm PY, PB, PC connect roller Y, the lower end of connecting rod 5, the lower end of pull bar 6 respectively, long arm swing PS connects the first hydraulic cylinder 8, first hydraulic cylinder 8 and drives the first bracket 2 to rotate around fixed axis P.Long arm swing PS wherein and short swing arm PB is preferably one-body molded.
As shown in figures 1 and 3, depression bar 3 is made up of three swing arms QD, QE, QZ angled centered by fixed axis Q, and three isometric i.e. QD=QE=QZ of swing arm, three isometric swing arm QZ, QD, QE connect roller Z, the upper end of pull bar 6, the second hydraulic cylinder 9 respectively, depression bar 3 to be driven by pull bar 6 by the first bracket 2 and rotates around fixed axis Q, pull bar 6 can slide in the connecting shaft hole of depression bar 3, and the second hydraulic cylinder 9 can drive separately depression bar 3 to drive roller 7 upwards to open.
Second bracket 4 is made up of two angled centered by fixed axis O short swing arm OX, OA, and two isometric i.e. OX=OA of short swing arm, two isometric short swing arm OX, OA connect the upper end of roller X, connecting rod 5 respectively, and connecting rod 5 drives the second bracket 4 to rotate around fixed axis O.
As shown in Figure 1, adjustment cushion block 10 is round plates that one group of following table wears boss 12, boss 12 can snap on the locating piece 11 in frame 1, prevent adjustment cushion block 10 play, location is contacted by driving the arc surface 20 of the long arm swing PS of the first bracket 2 to the first hydraulic cylinder 8, realize the control that amplitude opened by three rollers, according to the requirement of piercing process, the adjustment cushion block 10 can changing different-thickness realizes the guiding to different-diameter hollow billet or hollow forging.
This patent realizes constant with one heart, and the principle of opening adjustment is simultaneously: the installation site of roller X, Y, Z, forms an equilateral triangle, and namely three rollers 7 are on a concentric circles, and three spacings are equal, i.e. XY=YZ=ZX.Fixed rotating shaft P, Q, O of first bracket 2, depression bar 3, second bracket 4, also form an equilateral triangle, and on a concentric circles, and overlap with the concentric circles center of circle that roller 7 is formed, that is geometric centers coincidence of both formed equilateral triangles.As can be seen from the equal quadrangle schematic diagram of Fig. 3 multi link, by the short swing arm PB of the first bracket 2, the short swing arm OA of the second bracket 4, connecting rod 5 forms a parallelogram ABPO, by the short swing arm PC of the first bracket 2, the swing arm QD of depression bar 3, pull bar 6 forms a parallelogram CDQP, according to the equilateral triangle of OPQ composition, AB=OP=PQ=CD can be drawn, according to the first bracket 2, depression bar 3, the short swing arm of the second bracket 4 is isometric, OA=BP=PC=DQ can be drawn, namely two parallelogram ABPO are equal with CDQP corresponding sides, BP and PC is two short swing arms on the first bracket 2, it rotates an angle, 15 degree such as shown in Fig. 3, the short swing arm DQ on the depression bar 3 and short swing arm OA on the second bracket 4 is then driven to rotate identical angle, drive roller X, Y, Z also rotates identical angle, realize roller 7 to open, namely the opening of roller 7 changes, but the home position of roller 7 is constant.
Introduce the course of action of the three-roller guiding devices of the embodiment of the present invention below again:
Roller 7 is opened: the free end S of the first hydraulic cylinder 8 stretches out, promote the long arm swing PS above the first bracket 2, drive the short swing arm PB of the first bracket 2, PC, on PY and short swing arm PY roller Y rotate, short swing arm PB drives the galianconism OA above the second bracket 4 by connecting rod 5, roller X on OX and OX rotates, simultaneously, swing arm PC on first bracket 2 drives the swing arm QD above depression bar 3 by pull bar 6, QE, roller Z on QZ and QZ rotates, arc end 20 under long arm swing PS on first bracket 2 realizes the control of roller 7 opening degree by touching adjustment cushion block 10, the namely control of the length of side size of equilateral triangle that formed of roller, when second hydraulic cylinder 9 is retracted, drive swing arm QZ and roller 7 to realize opening separately by swing arm QE, when opening separately roller Z, the spacing between three rollers is no longer equal.
Roller closes: the second hydraulic cylinder 9 stretches out, and drives roller 7 to rotate closed; First hydraulic cylinder 8 is retracted, and drives the first bracket 2, depression bar 3, second bracket 4 and roller above 7 to realize closed, mentioned here closed be the state that spacing between three rollers is less, the state that spacing is 0 can be comprised.
Three roller guide mechanisms of the embodiment of the present invention, it is a kind of mechanism that can ensure that center is constant, opening can regulate rapidly, can be applicable to perforator background and oblique tube mill backstage, when punch is bored a hole, three roller guide mechanisms are in the closed state of roller, tightly clasp push rod, strengthen stability during push rod perforation, when hollow billet passes, the free end S of the first hydraulic cylinder 8 stretches out, and three roller guide mechanisms of the embodiment of the present invention are opened to rapidly guiding position, i.e. the state opened of roller 7, hollow billet is led, the violent whipping of restriction hollow billet.During for oblique tube mill tube rolling, guiding mechanism is opened to guiding position and leads to hollow forging, the violent whipping of restriction hollow forging.
Technical scheme of the present invention is disclosed as above by preferred embodiment.The change that those skilled in the art do when should recognize the scope and spirit of the present invention disclosed in the claim do not departed from appended by the present invention and retouching, within the protection domain all belonging to claim of the present invention.
Claims (10)
1. three roller guide mechanisms, for seamless steel pipe production, is characterized in that, this three roller guides mechanism comprises;
Frame;
Be fixedly connected on described frame, be parallel to each other and the first fixed axis, the second fixed axis and the 3rd fixed axis arranged in the first equilateral triangle;
Connect the first parallelogram connection-rod structure of described first fixed axis and described second fixed axis, connect the second parallelogram connection-rod structure of described first fixed axis and described 3rd fixed axis; Parallelogram connection-rod structure described in two is positioned at two opposite exterior lateral sides of described first equilateral triangle;
Be connected to described first fixed axis, described second fixed axis, the isometric first short swing arm of described 3rd fixed axis, the second short swing arm, the 3rd short swing arm;
Be connected to described first short swing arm, the second short swing arm, the 3rd short swing arm be parallel to each other and the first roller arranged in the second equilateral triangle, the second roller and the 3rd roller, described first roller is parallel to described first fixed axis, in same cross section, described second equilateral triangle overlaps with the geometric center of described first equilateral triangle; And
Drive described first parallelogram connection-rod structure and described second parallelogram connection-rod structure with the actuator of the equidirectional rotation of same angle, described first parallelogram connection-rod structure and described second parallelogram connection-rod structure drive described first short swing arm when rotating, second short swing arm, 3rd short swing arm is rotated to make described first roller, second roller and the 3rd roller are changed in three-equilateral triangular arrangement, the leg-of-mutton length of side of described three-equilateral is greater than or less than the length of side of described second equilateral triangle, described three-equilateral triangle overlaps with the geometric center of described first equilateral triangle.
2. three roller guide mechanisms as claimed in claim 1, it is characterized in that, described actuator is the first hydraulic cylinder, also rotatingly on described first fixed axis be connected with long arm swing and the 4th isometric short swing arm and the 5th short swing arm with described first short swing arm, described 4th short swing arm belongs to described first parallelogram connection-rod structure, described 5th short swing arm belongs to described second parallelogram connection-rod structure, and described long arm swing is connected between the free end of described first fixed axis and described first hydraulic cylinder.
3. three roller guide mechanisms as claimed in claim 2, it is characterized in that, also rotatingly on described second fixed axis be connected with the six short swing arm isometric with described second short swing arm, described 6th short swing arm one end connects described second fixed axis, the other end connects connecting rod, described 4th short swing arm one end connects described connecting rod, and the other end connects described first fixed axis, and described first parallelogram connection-rod structure is made up of described 4th short swing arm, described connecting rod and described 6th short swing arm.
4. three roller guide mechanisms as claimed in claim 2, it is characterized in that, also rotatingly on described 3rd fixed axis be connected with the seven short swing arm isometric with described 3rd short swing arm, described 7th short swing arm one end connects described 3rd fixed axis, other end cylinder lever connecting rod, described 5th short swing arm one end connects described pull bar, and the other end connects described first fixed axis, and described second parallelogram connection-rod structure is made up of described 5th short swing arm, described pull bar and described 7th short swing arm.
5. three roller guide mechanisms as claimed in claim 4, it is characterized in that, described 3rd roller is positioned at the top of described first roller and described second roller, also rotatingly on described 3rd fixed axis be connected with the eight short swing arm isometric with described 3rd short swing arm, one end of described 8th short swing arm connects described 3rd fixed axis, the other end connects the free end of the second hydraulic cylinder, when the free end of described second hydraulic cylinder is retracted, described 3rd short swing arm is driven to make described 3rd roller realize opening separately by described 8th short swing arm.
6. three roller guide mechanisms as claimed in claim 4, is characterized in that, described pull bar can slide in the connecting shaft hole of described 3rd fixed axis.
7. three roller guide mechanisms as claimed in claim 2, it is characterized in that, described three roller guide mechanisms also comprise rack-mounted adjustment cushion block, described long arm swing has an arc surface, described arc surface is positioned at the below of the pin joint of described long arm swing and described first hydraulic cylinder free end, by described adjustment cushion block, mechanical position limitation is carried out to described arc surface, realize the adjustment to the leg-of-mutton length of side of described three-equilateral.
8. three roller guide mechanisms as claimed in claim 7, is characterized in that, described adjustment cushion block is the round plate that one group of following table of variable thickness wears boss, and described boss snaps on the locating piece in described frame to prevent described adjustment cushion block play.
9. a seamless steel pipe production, is characterized in that, described seamless steel pipe production has the arbitrary three described roller guide mechanisms of claim 1-8.
10. seamless steel pipe production as claimed in claim 9, it is characterized in that, described seamless steel pipe production is punch or oblique tube mill.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410140338.7A CN103934290B (en) | 2014-04-09 | 2014-04-09 | Seamless steel pipe production and three roller guide mechanisms thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410140338.7A CN103934290B (en) | 2014-04-09 | 2014-04-09 | Seamless steel pipe production and three roller guide mechanisms thereof |
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| CN103934290A CN103934290A (en) | 2014-07-23 |
| CN103934290B true CN103934290B (en) | 2015-11-25 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105170656A (en) * | 2015-09-15 | 2015-12-23 | 鑫鹏源智能装备集团有限公司 | Slight-holding-type in-puncher roller for puncher |
| CN107520251A (en) * | 2017-09-29 | 2017-12-29 | 浙江明贺钢管有限公司 | Milling train backstage Three-roll plug steadier |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2308331C2 (en) * | 2005-12-22 | 2007-10-20 | Открытое акционерное общество "Электростальский завод тяжелого машиностроения" | Centering roller-type apparatus of tube rolling mill |
| CN102327904A (en) * | 2011-07-26 | 2012-01-25 | 太原通泽重工有限公司 | Three-roller centering device for rolling mill |
| CN102357539A (en) * | 2011-07-26 | 2012-02-22 | 太原通泽重工有限公司 | Built-in three-roller guiding device |
| CN102500630A (en) * | 2011-10-26 | 2012-06-20 | 太原重工股份有限公司 | Three-roller guide device for accurate positioning |
-
2014
- 2014-04-09 CN CN201410140338.7A patent/CN103934290B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2308331C2 (en) * | 2005-12-22 | 2007-10-20 | Открытое акционерное общество "Электростальский завод тяжелого машиностроения" | Centering roller-type apparatus of tube rolling mill |
| CN102327904A (en) * | 2011-07-26 | 2012-01-25 | 太原通泽重工有限公司 | Three-roller centering device for rolling mill |
| CN102357539A (en) * | 2011-07-26 | 2012-02-22 | 太原通泽重工有限公司 | Built-in three-roller guiding device |
| CN102500630A (en) * | 2011-10-26 | 2012-06-20 | 太原重工股份有限公司 | Three-roller guide device for accurate positioning |
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