WO2008128417A1 - Seamless steel tube four-roller-type heat sizing mill - Google Patents
Seamless steel tube four-roller-type heat sizing mill Download PDFInfo
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- WO2008128417A1 WO2008128417A1 PCT/CN2008/000617 CN2008000617W WO2008128417A1 WO 2008128417 A1 WO2008128417 A1 WO 2008128417A1 CN 2008000617 W CN2008000617 W CN 2008000617W WO 2008128417 A1 WO2008128417 A1 WO 2008128417A1
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- roller
- sizing
- frame
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- horizontal
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
- B21B31/08—Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts
- B21B31/10—Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts by horizontally displacing, i.e. horizontal roll changing
- B21B31/103—Manipulators or carriages therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
- B21B13/08—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with differently-directed roll axes, e.g. for the so-called "universal" rolling process
- B21B13/10—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with differently-directed roll axes, e.g. for the so-called "universal" rolling process all axes being arranged in one plane
- B21B13/103—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with differently-directed roll axes, e.g. for the so-called "universal" rolling process all axes being arranged in one plane for rolling bars, rods or wire
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B17/00—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling
- B21B17/14—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling without mandrel, e.g. stretch-reducing mills
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
- B21B31/08—Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts
- B21B31/10—Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts by horizontally displacing, i.e. horizontal roll changing
Definitions
- the invention relates to a seamless steel pipe rolling pipe device, in particular to a seamless steel pipe four-roll heat sizing machine. Background technique
- the sizing machine used for the whole seamless round steel pipe is mainly a three-roller round pipe sizing machine.
- Its structure consists of a three-roller sizing mainframe, a roll changer on the track, and the main engine transmission mode.
- the three rollers are distributed at 120°, and the power is transmitted from the shaft end of the shaft to the P gear.
- the two pairs of bevel gears respectively carry the other two rollers, so that the rollers mounted on the three rollers simultaneously Rotate toward the center to drive the steel pipe through the sizing mainframe.
- the disadvantages of this sizing machine are:
- the present invention aims to provide a seamless steel tube four-roller heat sizing machine with reasonable design, compact structure, low cost, safe operation and convenient use. ,.
- a seamless steel tube four-roller heat sizing machine comprises a roll changing car on a track and a sizing main machine, wherein: the sizing main body is mounted on one side of the track, and is composed of a frame, a horizontal sizing roll set,
- the side vertical sizing roller group is composed of a square shape, which is formed by connecting a base, a column and a beam.
- On the base a horizontal sizing roller group and a side vertical sizing roller group are arranged in sequence;
- Each set of horizontal sizing roller sets and each set of side vertical sizing roller sets are correspondingly arranged, and a plurality of sliding rails are respectively arranged on the changing roller, and each sliding rail
- each set of horizontal sizing roller sets and each set of side vertical sizing rollers can be pulled out and pushed in the square frame by the hydraulic cylinders of the changing rolls.
- each horizontal sizing roller set can be locked, each Locking hydraulic cylinder for side set sizing roller set.
- the horizontal sizing roller group has two or more groups, and each group of horizontal sizing roller groups is composed of a frame, a large fan angle flat roller, a small fan angle vertical roller, a horizontal roller shaft, and a horizontal transmission mechanism.
- upper and lower flat rollers are installed in the frame, and two are along the outer circumferential surface of the pipe to be processed.
- Side perpendicular to the upper and lower large fan-angle flat rollers, equipped with small fan-corner vertical rollers on both sides, so that the upper and lower flat rollers and the roller rollers on both sides form a contact surface with the roller of the pipe to be processed.
- the closed hole is connected; the horizontal transmission mechanism composed of the motor and the reduction box is connected to the horizontal roller shaft on the side of the large fan angle flat roller at the upper and lower positions.
- the side vertical sizing roller group has two or more sets, and each set of side vertical sizing roller sets is composed of a frame, a large fan angle vertical roller, a small fan angle flat roller, a vertical roller shaft, and a moving mechanism, and Corresponding to the position of the processed pipe, along the two sides of the outer circumferential surface of the pipe to be processed, a large fan-angle vertical roller on both sides is installed in the frame, along the upper and lower sides of the outer circumferential surface of the pipe to be processed Position, perpendicular to the large fan angle roller on both sides, equipped with upper and lower small fan angle flat rollers, so that the large fan angle vertical rollers on both sides and the small fan angle flat rollers in the upper and lower positions and the processed pipe A closed hole is formed between the roller contact faces, and a transmission mechanism composed of a motor reduction gear box is connected to a vertical roller shaft on one side of the two large fan angle vertical rollers.
- Each set of horizontal sizing roller sets further includes a snubber structure, wherein the snubber structure is a set of shims, and is mounted on the upper and lower planes of the bearing frame of the frame and the horizontal roller shaft by fastening screws. The combined position of the end faces.
- the spacer group may be a set of gaskets of various specifications formed by spacers of 0.5 mm as a basic unit, and generally includes four specifications of 0.5 mm, 1 mm, 2 mm, and 5 mm. Since the invention is a large-scale hot-rolling rolling mill, it belongs to intermittent rolling. In the production process, a large impact load is generated due to the gap of the frame, which causes damage to the equipment. On the other hand, the working condition is complicated, which is not conducive to the operation on the machine. The gap operation, and the use of the aforementioned gap-clearing structure to eliminate the gap is performed outside the machine, which is simple and easy to perform and reliable in performance.
- each frame of the horizontal sizing roller group and the side vertical sizing roller group is a closed hole shape, that is, a horizontal sizing roller group and a side sizing roller group
- the roll contact surface between each roll and the sizing round steel tube forms a closed hole shape
- the hole shape design of the roll starts from the first frame, and is sequentially a flat ellipsoid - a vertical ellipse - a flat ellipses - Lie ellipses - flat ellipses, such a hole-shaped process, It is very beneficial to reduce the diameter and achieve the purpose of sizing.
- the rolling fan angle of the driving roller is used in the distribution design of the round steel pipe roll.
- the angle is larger than the fan angle of the passive roller - the wrap angle, so that the overlap of the roll gap can be avoided, and the contact area between the driving roller and the processed steel pipe can be increased, and the frictional force is increased, resulting in the processing being processed.
- the increased driving force of the steel pipe is beneficial to the forward running of the steel pipe. Due to the repair of the rolls in each pair of horizontal sizing rolls and side sizing rolls, it is possible to remove the single rolls on a conventional CNC lathe without the need for a dedicated lathe.
- the object of the present invention is achieved by combining the technical measures taken above.
- each set of rolls adopts a closed hole type structure, which can avoid the indentation of the roll gap on the surface of the processed steel pipe and improve the sizing quality of the round steel pipe;
- the hole shape design of the roll starts from the first frame, and is sequentially flat ellipses - vertical ellipses - flat ellipses - vertical ellipses - flat ellipses, such a hole-shaped process, which is very beneficial for reducing the diameter to achieve sizing
- the design of the gap structure eliminates the gap of the rack, avoids or greatly reduces the impact on the frame during the production process and the resulting equipment damage, and the method of eliminating the gap is to operate outside the machine, and It does not have to be adjusted on the machine, its operation is simple and easy to operate, and its performance is reliable.
- the invention has the advantages of low cost, safe operation and convenient use as a whole.
- the present invention has four drawings in total. among them,
- Figure 1 is a front view showing the structure of a specific embodiment of the present invention.
- Figure 2 is a plan view of Figure 1;
- Figure 3 is a cross-sectional view taken along line A-A of Figure 1, showing the distribution of each set of horizontal sizing rolls;
- Figure 4 is a cross-sectional view of B-B of Figure 1 with the horizontal drive removed, each set of side sizing rolls Distribution map. In the picture,
- roller changer 2 track 3, small fan angle vertical roll 4, large fan angle flat roll 5, Beam 6, frame 7, lock cylinder 8, column 9, base 10, hydraulic cylinder 11, horizontal roller shaft 11', vertical roller shaft 12, 12' reduction gearbox 13, 13', motor 14, machined pipe 15 , large fan angle vertical roller 16, small fan angle flat roller 17, slide rail 18, eliminating gap structure.
- Fig. 1 and Fig. 2 it is a seamless steel tube four-roller heat sizing machine installed on the #325 ⁇ 720 seamless steel pipe production line; its structure includes a roll changer 1 on the track 2, a sizing mainframe,
- the utility model is characterized in that: a sizing main body is arranged on the rear side of the rail 2, the sizing main body is composed of a frame, a horizontal sizing roller group and a side vertical sizing roller group, and the frame is connected by the base 9, the column 8 and the beam 5 Forming a square frame, the base 9 is sequentially provided with three sets of horizontal sizing roller sets and two sets of side sizing roller sets, and each set of horizontal sizing roller sets, as shown in FIG.
- the upper and lower large fan angle flat rollers 4 are installed in the frame 6, along the two sides of the outer circumferential surface thereof, perpendicular to the upper and lower flat rollers 4, and the small fan angle vertical rollers 3 on both sides are installed.
- a horizontal transmission mechanism composed of a motor 13 and a reduction box 12 is connected to the horizontal roller shaft 11 on the right side of the upper and lower large fan angle flat rollers 4, and at the same time, in order to reduce the impact load, the clearance is eliminated,
- the anti-slip spacer group is arranged at the joint position of the upper and lower plane end faces of the bearing frame of the horizontal roller shaft, and the operator adds a suitable anti-backlash gasket group to the upper and lower plane end faces of the bearing housing of the horizontal shaft according to the wear and the gap condition of the roller.
- each set of side-standing sizing rolls such as 4, consisting of a frame 6, a large fan angle vertical roller 15, a small fan angle flat roller 16, a vertical roller shaft 11', and a moving mechanism corresponding to the position of the tube 14 to be processed, along the outer circumference thereof
- a large fan angle vertical roller 15 on both sides is installed in the frame 6, and the upper and lower positions along the outer circumferential surface thereof are perpendicular to the large fan angle vertical rollers 15 on both sides, and the upper and lower sides are installed.
- the upper transmission mechanism consisting of the motor 13' and the reduction gear box 12' is connected to the shaft 1; corresponding to the position of each set of horizontal sizing roller sets and each set of side vertical sizing roller sets, respectively, on the roll changing car 1, respectively a plurality of slide rails 15 corresponding to each of the slide rails 15,
- the front side of the change roll car 1 is respectively provided with a hydraulic cylinder 10 for changing rolls, and each of the horizontal sizing roll sets and each side set sizing roll set can be pulled out and pushed in a square frame by the hydraulic cylinder 10 for changing rolls.
- each horizontal sizing roller group can be locked, each Locking hydraulic cylinders 7 of the side set sizing roller sets.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
- Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
Abstract
A seamless steel tube four-roller-type heat sizing mill includes a sizing mainframe, a roller changing vehicle (1) and locking hydraulic cylinders (7). The sizing mainframe comprises a frame, level sizing roller groups and side standing sizing roller groups. The roller changing vehicle (1) is positioned on one side of tracks (2), and hydraulic cylinders for changing roller (10) are positioned on the other side of the roller changing vehicle (1), each level sizing roller groups and each side standing sizing roller groups can be pulled out of and pushed into the frame by the hydraulic cylinders for changing roller (10). With respect to each level sizing roller groups and each side standing sizing roller groups, the locking hydraulic cylinders (7) are fixed on the beam (5) of the frame for locking the sizing roller groups. Said mill can improve the sizing quality of the steel tube and reduce the process of changing roller.
Description
无缝钢管四辊式热定径机 技术领域 Seamless steel tube four-roller heat sizing machine
本发明涉及无缝钢管轧管设备， 特别涉及一种无缝钢管四辊式热定径机。 背景技术 The invention relates to a seamless steel pipe rolling pipe device, in particular to a seamless steel pipe four-roll heat sizing machine. Background technique
人所共知， 由无缝钢管轧管设备轧制出的无缝圆钢管， 在高温轧制过程中， 受一些因素的影响， 经常出现圆管外径的椭圆度形状公差不符合标准要求； 因 此， 要对轧制后的圆钢管坯采用定径机， 来进行外径的圆整， 使其达到合格的 无缝圆钢管成品。 It is well known that the seamless round steel pipe rolled by the seamless steel pipe rolling equipment is affected by some factors during the high temperature rolling process, and the elliptical shape tolerance of the outer diameter of the round pipe often does not meet the standard requirements; Therefore, it is necessary to use a sizing machine for the rolled round steel tube billet to round the outer diameter to achieve a qualified seamless round steel tube product.
目前， 用来個整无缝圆钢管的定径机， 主要是采用三辊圆管定径机， 它的 结构由三辊式的定径主机、 轨道上的换辊车、 其主机的传动方式为内传动， 三 辊呈 120° 分布， 其动力由一轴的辊轴端^ P齿轮连接传入， 通过两对锥齿轮分别 带其它两辊轴， 这样， 装于三辊轴上的轧辊同时向中心旋转， 带动钢管通过定 径主机。 这种定径机的缺点是： At present, the sizing machine used for the whole seamless round steel pipe is mainly a three-roller round pipe sizing machine. Its structure consists of a three-roller sizing mainframe, a roll changer on the track, and the main engine transmission mode. For the internal transmission, the three rollers are distributed at 120°, and the power is transmitted from the shaft end of the shaft to the P gear. The two pairs of bevel gears respectively carry the other two rollers, so that the rollers mounted on the three rollers simultaneously Rotate toward the center to drive the steel pipe through the sizing mainframe. The disadvantages of this sizing machine are:
1、 无缝圆钢管的每一个尺寸规格就需要配备一套辊架， 因此， 每台定径机 的辊架数以百计， 既不便于管理， 又提高制造成本。 1. Each size of the seamless round steel pipe needs to be equipped with a set of roller frames. Therefore, the number of roller frames per sizing machine is hundreds, which is not easy to manage and increases the manufacturing cost.
2、 当需要修理轧辊时， 必须连同辊架一块方可进行修理， 因此就必须配备 专用机床， 既不便于修理， 又增加成本。 2. When the roll needs to be repaired, it must be repaired together with the roller frame, so it must be equipped with a special machine tool, which is not easy to repair and increases the cost.
发明内容 Summary of the invention
为了避免上述技术中存在的缺点和不足之处， 本发明旨在提供一种无缝钢 管四辊式热定径机， 其设计合理， 结构紧凑， 而且具有成本低， 操作安全， 使 用方便的特点，。 In order to avoid the shortcomings and deficiencies in the above technology, the present invention aims to provide a seamless steel tube four-roller heat sizing machine with reasonable design, compact structure, low cost, safe operation and convenient use. ,.
本发明的目的是采用如下的技术方案实现的： The object of the present invention is achieved by the following technical solutions:
一种无缝钢管四辊式热定径机， 包括轨道上的换辊车、 定径主机， 其特征 在于： 所述定径主机装于轨道一侧， 并由框架、 水平定径辊组、 侧立定径辊组 组成， 所述框架呈方形， 由底座、 立柱、 横梁相互连接而成， 在所述底座上， 依序装设交错相间的水平定径辊组、 侧立定径辊组； 与每组水平定径辊组、 每 组侧立定径辊组的位置相对应， 于换辊车上分别装设若干个滑轨， 与每一滑轨 A seamless steel tube four-roller heat sizing machine comprises a roll changing car on a track and a sizing main machine, wherein: the sizing main body is mounted on one side of the track, and is composed of a frame, a horizontal sizing roll set, The side vertical sizing roller group is composed of a square shape, which is formed by connecting a base, a column and a beam. On the base, a horizontal sizing roller group and a side vertical sizing roller group are arranged in sequence; Each set of horizontal sizing roller sets and each set of side vertical sizing roller sets are correspondingly arranged, and a plurality of sliding rails are respectively arranged on the changing roller, and each sliding rail
1 1
确认本
对应， 在换辊车的另一侧分别装设换辊的液压缸， 通过换辊的液压缸分别可将 每组水平定径辊组、 每组侧立定径辊在方形框架内拉出、 推进； 与装于框架内 的每组水平定径辊组、 每组侧立定径辊组的顶部位置相对应， 在框架的横梁上， 分别装设能锁固每个水平定径辊组、 每个侧立定径辊组的锁固液压缸。 Confirmation Correspondingly, the hydraulic cylinders for changing the rollers are respectively installed on the other side of the roll changing vehicle, and each set of horizontal sizing roller sets and each set of side vertical sizing rollers can be pulled out and pushed in the square frame by the hydraulic cylinders of the changing rolls. Corresponding to the top position of each set of horizontal sizing roller sets and each set of side sizing roller sets installed in the frame, respectively, on the beam of the frame, each horizontal sizing roller set can be locked, each Locking hydraulic cylinder for side set sizing roller set.
所述的水平定径辊组， 其数量在二组以上， 每一组的水平定径辊组， 由机 架、 大扇面角平辊、 小扇面角立辊、 水平辊轴、 水平传动机构组成， 与被加工 管的位置相对应， 沿所述被加工管的外圆周面的上、 下位置， 于机架内装设上、 下的平辊， 沿所述被加工管的外圆周面的两侧， 与上、 下的大扇面角平辊相垂 直， 装设两侧的小扇面角立辊， 使上、 下的平辊和两侧的立辊与被加工管的辊 触面之间形成了封闭孔； 在上、 下位置的大扇面角平辊一侧的水平辊轴上连接 由电机、 减速箱组成的水平传动机构。 The horizontal sizing roller group has two or more groups, and each group of horizontal sizing roller groups is composed of a frame, a large fan angle flat roller, a small fan angle vertical roller, a horizontal roller shaft, and a horizontal transmission mechanism. Corresponding to the position of the pipe to be processed, along the upper and lower positions of the outer circumferential surface of the pipe to be processed, upper and lower flat rollers are installed in the frame, and two are along the outer circumferential surface of the pipe to be processed. Side, perpendicular to the upper and lower large fan-angle flat rollers, equipped with small fan-corner vertical rollers on both sides, so that the upper and lower flat rollers and the roller rollers on both sides form a contact surface with the roller of the pipe to be processed. The closed hole is connected; the horizontal transmission mechanism composed of the motor and the reduction box is connected to the horizontal roller shaft on the side of the large fan angle flat roller at the upper and lower positions.
所述的侧立定径辊组， 其数量在二组以上， 每组侧立定径辊组， 由机架、 大扇面角立辊、 小扇面角平辊、 垂直辊轴、 上传动机构组成， 与被加工管的位 置相对应， 沿所述被加工管的外圆周面的两侧， 于机架内装设两侧的大扇面角 立辊， 沿所述被加工管的外圆周面的上、 下位置， 与两侧的大扇面角立辊相垂 直， 装设上、 下的小扇面角平辊， 使两侧的大扇面角立辊和上、 下位置的小扇 面角平辊与被加工管的辊触面之间形成了封闭孔， 在所述两个大扇面角立辊一 侧的垂直辊轴上连接由电机减速箱组成的传动机构。 The side vertical sizing roller group has two or more sets, and each set of side vertical sizing roller sets is composed of a frame, a large fan angle vertical roller, a small fan angle flat roller, a vertical roller shaft, and a moving mechanism, and Corresponding to the position of the processed pipe, along the two sides of the outer circumferential surface of the pipe to be processed, a large fan-angle vertical roller on both sides is installed in the frame, along the upper and lower sides of the outer circumferential surface of the pipe to be processed Position, perpendicular to the large fan angle roller on both sides, equipped with upper and lower small fan angle flat rollers, so that the large fan angle vertical rollers on both sides and the small fan angle flat rollers in the upper and lower positions and the processed pipe A closed hole is formed between the roller contact faces, and a transmission mechanism composed of a motor reduction gear box is connected to a vertical roller shaft on one side of the two large fan angle vertical rollers.
. 所述的每组水平定径辊组还包括消间隙结构， 所述的消间隙结构是一组垫 片， 并通过紧固螺钉安装于所述的机架与水平辊轴的轴承座上下平面端面的结 合位置。 所述垫片组可以是以 0.5mm为基本单位的垫片形成的各种规格的一组 垫片， 通常包括 0.5mm、 lmm, 2mm、 5mm四种规格。 由于本发明是大型热轧 轧钢机， 属于间断性轧制， 生产过程中由于机架间隙产生较大的冲击载荷， 造 成设备的损坏， 另一方面其工况复杂， 不利于在机上作业进行消间隙操作， 而 采用前述的消间隙结构消除间隙是在机外进行操作， 简单易行， 性能可靠。 Each set of horizontal sizing roller sets further includes a snubber structure, wherein the snubber structure is a set of shims, and is mounted on the upper and lower planes of the bearing frame of the frame and the horizontal roller shaft by fastening screws. The combined position of the end faces. The spacer group may be a set of gaskets of various specifications formed by spacers of 0.5 mm as a basic unit, and generally includes four specifications of 0.5 mm, 1 mm, 2 mm, and 5 mm. Since the invention is a large-scale hot-rolling rolling mill, it belongs to intermittent rolling. In the production process, a large impact load is generated due to the gap of the frame, which causes damage to the equipment. On the other hand, the working condition is complicated, which is not conducive to the operation on the machine. The gap operation, and the use of the aforementioned gap-clearing structure to eliminate the gap is performed outside the machine, which is simple and easy to perform and reliable in performance.
本发明的设计原理分述于下： 由于在水平定径辊组、 侧立定径辊组的每一 机架的轧辊设计均为封闭孔形， 也就是水平定径辊组、 侧立定径辊组中的每一 轧辊与被定径的圆钢管之间的辊触面形成一封闭孔形， 且轧辊的孔形设计从第 一机架开始， 顺次为平椭——立椭一平椭——立椭——平椭， 这样的孔型工艺，
非常有利于通过减径， 达到定径的目的； 同时， 为避免轧辊缝对被加工钢管表 面产生的压痕， 在进行沿圆钢管轧辊分布设计时， 采用主动辊的轧制扇面角一 一包角大于被动辊的扇面角——包角， 这样一来， 既可避免辊缝的重合， 又可 使主动辊与被加工钢管的接触面积增大， 其摩擦力也就增大， 导致对被加工钢 管的驱动力增大， 就有利于钢管的向前运行。 由于对每一对水平定径辊、 侧立 定径辊中的轧辊的修复， 可以卸下单辊在普通数控车床上进行， 而不需要专用 车床。 综合以上所采取的技术措施， 实现本发明的目的。 The design principle of the present invention is described as follows: Since the roll design of each frame of the horizontal sizing roller group and the side vertical sizing roller group is a closed hole shape, that is, a horizontal sizing roller group and a side sizing roller group The roll contact surface between each roll and the sizing round steel tube forms a closed hole shape, and the hole shape design of the roll starts from the first frame, and is sequentially a flat ellipsoid - a vertical ellipse - a flat ellipses - Lie ellipses - flat ellipses, such a hole-shaped process, It is very beneficial to reduce the diameter and achieve the purpose of sizing. At the same time, in order to avoid the indentation of the surface of the steel pipe to be processed by the roll gap, the rolling fan angle of the driving roller is used in the distribution design of the round steel pipe roll. The angle is larger than the fan angle of the passive roller - the wrap angle, so that the overlap of the roll gap can be avoided, and the contact area between the driving roller and the processed steel pipe can be increased, and the frictional force is increased, resulting in the processing being processed. The increased driving force of the steel pipe is beneficial to the forward running of the steel pipe. Due to the repair of the rolls in each pair of horizontal sizing rolls and side sizing rolls, it is possible to remove the single rolls on a conventional CNC lathe without the need for a dedicated lathe. The object of the present invention is achieved by combining the technical measures taken above.
本发明的有益效果是： The beneficial effects of the invention are:
1、 其结构紧凑、 设计合理； 1. Its compact structure and reasonable design;
2、 每一组轧辊的设计均采用封闭的孔型结构， 可避免轧辊缝对被加工钢管 表面产生的压痕， 提高圆钢管的定径质量; 2. The design of each set of rolls adopts a closed hole type structure, which can avoid the indentation of the roll gap on the surface of the processed steel pipe and improve the sizing quality of the round steel pipe;
3、 轧辊的孔形设计从第一机架开始， 顺次为平椭——立椭一平椭——立椭 ——平椭， 这样的孔型工艺， 非常有利于通过减径， 达到定径的目的， 提高圆 钢管的定径质量； 3. The hole shape design of the roll starts from the first frame, and is sequentially flat ellipses - vertical ellipses - flat ellipses - vertical ellipses - flat ellipses, such a hole-shaped process, which is very beneficial for reducing the diameter to achieve sizing The purpose of improving the sizing quality of round steel tubes;
4、轧辊的修复，可以卸下单辊在普通数控车床上进行，而不需要专用车床。 4, the repair of the roll, you can remove the single roll on the ordinary CNC lathe, without the need for a dedicated lathe.
5、 变换规格只换轧辊， 不需换辊架： 既减少了对辊架的投资， 又大大地节 省了换辊的时间， 提高生产效率； 5. Change the specification only to change the roll, no need to change the roll stand: It not only reduces the investment on the roll stand, but also saves the time of changing the roll and improves the production efficiency;
6、 消间隙结构的设计消除了机架间隙， 避免或大大降^ ^了生产过程中对于 机架的冲击及由此而产生的设备损坏， 同时该消间隙方法是在机外进行操作， 而不必在机上进行调整， 其操作简单易行， 使用性能可靠。 6, the design of the gap structure eliminates the gap of the rack, avoids or greatly reduces the impact on the frame during the production process and the resulting equipment damage, and the method of eliminating the gap is to operate outside the machine, and It does not have to be adjusted on the machine, its operation is simple and easy to operate, and its performance is reliable.
7、 本发明整体上具有成本低， 操作安全， 使用方便的优点。 7. The invention has the advantages of low cost, safe operation and convenient use as a whole.
附图说明 DRAWINGS
本发明共有 4幅附图。 其中， The present invention has four drawings in total. among them,
图 1是本发明的具体实施例的主视结构示意图； Figure 1 is a front view showing the structure of a specific embodiment of the present invention;
图 2是图 1的俯视图； Figure 2 is a plan view of Figure 1;
图 3是图 1的 A— A剖视图去掉上传动机构， 是每组水平定径辊组的分布图； 图 4是图 1的 B— B剖视图去掉水平传动机构，是每组侧立定径辊组的分布图。 图中， Figure 3 is a cross-sectional view taken along line A-A of Figure 1, showing the distribution of each set of horizontal sizing rolls; Figure 4 is a cross-sectional view of B-B of Figure 1 with the horizontal drive removed, each set of side sizing rolls Distribution map. In the picture,
1、 换辊车 2、 轨道 3、 小扇面角立辊 4、 大扇面角平辊 5、
横梁 6、 机架 7、 锁固液压缸 8、 立柱 9、 底座 10、 液压缸 11、水平辊轴 11 '、垂直辊轴 12， 12 '减速箱 13， 13 '、 电机 14、 被加工管 15、 大扇面角立辊 16、 小扇面角平辊 17、 滑轨 18、 消 间隙结构。 1. Roller changer 2, track 3, small fan angle vertical roll 4, large fan angle flat roll 5, Beam 6, frame 7, lock cylinder 8, column 9, base 10, hydraulic cylinder 11, horizontal roller shaft 11', vertical roller shaft 12, 12' reduction gearbox 13, 13', motor 14, machined pipe 15 , large fan angle vertical roller 16, small fan angle flat roller 17, slide rail 18, eliminating gap structure.
具体实施方式 detailed description
现结合附图对本发明作进一步的具体说明。如图 1、图 2所示，是装于 # 325〜 720 无缝钢管生产线上的无缝钢管四辊式热定径机； 其结构包括轨道 2上的换 辊车 1， 定径主机， 其特征在于： 在轨道 2后侧装定径主机， 所述的定径主机由 框架、 水平定径辊组、 侧立定径辊组组成， 所述框架是由底座 9、 立柱 8、 横梁 5相互连接构成方形框架， 所述底座 9上， 依序装设交错相间的三组水平定径辊 组、 二组侧立定径辊组， 所述的每一组水平定径辊组，如图 3所示， 由机架 6、 大扇面角平辊 4、 小扇面角立辊 3、 水平辊轴 11、 水平传动机构组成， 与被加工 管 14的位置相对应， 沿其外、圆周面的上、 下位置， 于机架 6内装设上、 下的大 扇面角平辊 4， 沿其外圆周面的两侧， 与上、 下的平辊 4相垂直， 装设两侧的小 扇面角立辊 3， 使上、下的大扇面角平辊 4和两侧的小扇面角立辊 3与被加工管 的辊触面之间形成了封闭孔， 于上、 下的大扇面角平辊 4右侧的水平辊轴 11上 连接由电机 13、 减速箱 12组成的水平传动机构， 同时， 为降低冲击载荷， 消除 间隙， 在所述的机架与水平辊轴的轴承座上下平面端面的结合位置设置消隙垫 片组， 操作者根据轧辊磨损和间隙情况， 事先在水平轴的轴承座上下平面端面 加好合适的消隙垫片组并以螺钉紧固， 消除了机架间隙的轧机， 在钢管进入轧 机时就不会产生或大大降低了由于此间隙对轧机所造成的冲击；所述的每一组侧 立定径辊组， 如图 4所示， 由机架 6、 大扇面角立辊 15、.小扇面角平辊 16、 垂 直辊轴 11 '、 上传动机构组成， 与被加工管 14的位置相对应， 沿其外圆周面的 两侧， 于机架 6内装设两侧的大扇面角立辊 15， 沿其外圆周面的上、 下位置， 与两侧的大扇面角立辊 15相垂直， 装设上、 下位置的小扇面角平辊 16， 使两侧 的大扇面角立辊 15和上、 下位置的小扇面角平辊 16与被加工管 14的辊触面之 间形成了封闭孔， 于两侧的大扇面角立辊 15右侧的辊轴 1 上连接由电机 13 ' 及减速箱 12' 组成的上传动机构;与每组水平定径辊组、 每组侧立定径辊组的位 置相对应， 在换辊车 1上， 分别装设若干个滑轨 15， 与每一滑轨 15相对应， 在
换辊车 1的前侧分别装设换辊的液压缸 10，通过换辊的液压缸 10分别可将每个 水平定径辊组、 每个侧立定径辊组在方形框架内拉出、 推进； 与装于框架内的 每个水平定径辊组、 每个侧立定径辊组的顶部位置相对应， 在框架的横梁 5上， 分别装设能锁固每个水平定径辊组、 每个侧立定径辊组的锁固液压缸 7。 The invention will now be further described in detail with reference to the drawings. As shown in Fig. 1 and Fig. 2, it is a seamless steel tube four-roller heat sizing machine installed on the #325~720 seamless steel pipe production line; its structure includes a roll changer 1 on the track 2, a sizing mainframe, The utility model is characterized in that: a sizing main body is arranged on the rear side of the rail 2, the sizing main body is composed of a frame, a horizontal sizing roller group and a side vertical sizing roller group, and the frame is connected by the base 9, the column 8 and the beam 5 Forming a square frame, the base 9 is sequentially provided with three sets of horizontal sizing roller sets and two sets of side sizing roller sets, and each set of horizontal sizing roller sets, as shown in FIG. , consisting of rack 6, large fan angle flat roller 4, small fan angle vertical roller 3, horizontal roller shaft 11, horizontal transmission mechanism, corresponding to the position of the processed tube 14, along the outer and outer surfaces Position, the upper and lower large fan angle flat rollers 4 are installed in the frame 6, along the two sides of the outer circumferential surface thereof, perpendicular to the upper and lower flat rollers 4, and the small fan angle vertical rollers 3 on both sides are installed. , forming a large fan angle flat roller 4 of the upper and lower sides and a small fan angle vertical roller 3 on both sides and a roller contact surface of the processed tube a closed hole, a horizontal transmission mechanism composed of a motor 13 and a reduction box 12 is connected to the horizontal roller shaft 11 on the right side of the upper and lower large fan angle flat rollers 4, and at the same time, in order to reduce the impact load, the clearance is eliminated, The anti-slip spacer group is arranged at the joint position of the upper and lower plane end faces of the bearing frame of the horizontal roller shaft, and the operator adds a suitable anti-backlash gasket group to the upper and lower plane end faces of the bearing housing of the horizontal shaft according to the wear and the gap condition of the roller. And the rolling mill is fastened by screws, eliminating the gap of the frame. When the steel pipe enters the rolling mill, the impact on the rolling mill due to the gap is not generated or greatly reduced; each set of side-standing sizing rolls, such as 4, consisting of a frame 6, a large fan angle vertical roller 15, a small fan angle flat roller 16, a vertical roller shaft 11', and a moving mechanism corresponding to the position of the tube 14 to be processed, along the outer circumference thereof On both sides of the surface, a large fan angle vertical roller 15 on both sides is installed in the frame 6, and the upper and lower positions along the outer circumferential surface thereof are perpendicular to the large fan angle vertical rollers 15 on both sides, and the upper and lower sides are installed. Position of the small fan angle flat roller 16, so that A closed hole is formed between the large fan-corner vertical roller 15 on the side and the small fan-face flat roller 16 in the upper and lower positions and the roller contact surface of the processed tube 14, and the roller on the right side of the large-sector vertical roller 15 on both sides The upper transmission mechanism consisting of the motor 13' and the reduction gear box 12' is connected to the shaft 1; corresponding to the position of each set of horizontal sizing roller sets and each set of side vertical sizing roller sets, respectively, on the roll changing car 1, respectively a plurality of slide rails 15 corresponding to each of the slide rails 15, The front side of the change roll car 1 is respectively provided with a hydraulic cylinder 10 for changing rolls, and each of the horizontal sizing roll sets and each side set sizing roll set can be pulled out and pushed in a square frame by the hydraulic cylinder 10 for changing rolls. Corresponding to the position of each horizontal sizing roller set in the frame and the top position of each side sizing roller set, on the cross member 5 of the frame, each horizontal sizing roller group can be locked, each Locking hydraulic cylinders 7 of the side set sizing roller sets.
以上所述， 仅为本发明的较佳的具体实施方式， 但本发明的保护范围并不 局限于此， 所有熟悉本技术领域的技术人员在本发明公开的技术范围内， 根据 本发明的技术方案及其本发明的构思加以等同替换或改变均应涵盖在本发明的 保护范围之内。
The above is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and all those skilled in the art are within the technical scope of the present disclosure, and the technology according to the present invention The alternatives and modifications of the present invention and its concepts are intended to be included within the scope of the present invention.
Claims
1、一种无缝钢管四辊式热定径机， 包括轨道 (2)上的换辊车（1 )、定径主机, 其特征在于： 所述定径主机装于轨道 (2)—侧， 并由框架、 水平定径辊组、 侧立 定径辊组组成， 所述框架是由底座 （9)、 立柱 （8)、 横梁 （5 ) 相互连接而成而 成的方形框架， 在所述底座 （9) 上， 依序装设交错相间的水平定径辊组、 侧立 定径辊组； 与每组水平定径辊组权、 每组侧立定径辊组的位置相对应， 在换辊车1. A seamless steel tube four-roller heat sizing machine comprising a roll changer (1) on a track (2) and a sizing main machine, wherein: the sizing main body is mounted on the rail (2) side And consisting of a frame, a horizontal sizing roller set, and a side sizing roller set, wherein the frame is a square frame formed by connecting the base (9), the column (8), and the beam (5) to each other, On the base (9), staggered horizontal sizing roller sets and side vertical sizing roller sets are arranged in sequence; corresponding to each set of horizontal sizing roller sets and each set of side sizing roller sets, in the roll changing car
( 1 )上， 分别装设若干个滑轨（17)， 与每一滑轨（17)相对应， 在换辊车（1 ) 的另一侧分别装设换辊的液压缸 (10)， 通过换辊的液压缸 (10)分别可将每组水平 定径辊组、 每组侧立定径辊组在方形框架内拉出、 推进； 与装于框架内的每组 (1) above, a plurality of slide rails (17) are respectively installed, and corresponding to each slide rail (17), hydraulic cylinders (10) for changing rollers are respectively installed on the other side of the roll change vehicle (1), Each group of horizontal sizing roller sets and each set of side sizing roller sets can be pulled out and advanced in a square frame by a hydraulic cylinder (10) for changing rolls; and each group installed in the frame
求 begging
水平定径辊组、 每组侧立定径辊组的顶部位置相对应， 在框架的横梁上， 分别 装设能锁固每组水平定径辊组、 每组侧立定径辊组的锁固液压缸 （7)。 The horizontal sizing roller group and the top position of each set of side sizing roller groups correspond to each other. On the beam of the frame, locking hydraulic pressures capable of locking each set of horizontal sizing roller sets and each set of side sizing roller sets are respectively installed. Cylinder (7).
2、 按权利要求 1所述的无缝钢管四辊式热定径机， 其特征在于： 所述的水 平定径辊组， 其数量在二组以上， 每组水平定径辊组， 由机架 （6)、 大扇面角 平辊 （4)、 小扇面角立辊 （3 )、 水平辊轴 （11 )、 水平传动机构组成， 与被加工 管 （14) 的位置相对应， 沿所述被加工管 （14) 的外圆周面的上、 下位置， 于 机架 （6) 内装设上、 下的大扇面角平辊 （4)， 沿所述被加工管 （14) 的外圆周 面的两侧，与上、下的大扇面角平辊（4)相垂直，装设两侧的小扇面角立辊（3 )， 即由上、 下位置的大扇面角平辊 （4) 和两侧的小扇面角立辊 （3 ) 分别与被加 工管 （14) 的辊触面之间形成了封闭孔； 在上、 下位置的大扇面角平辊 （4)一 侧的水平辊轴 （11 ) 由轴承座支承， 连接由电机 （13 )、 减速箱 （12) 组成的水 平传动机构。 2. The seamless steel tube four-roller heat sizing machine according to claim 1, wherein: the horizontal sizing roller group has a number of two or more sets, each set of horizontal sizing roller sets, by machine Frame (6), large fan angle flat roller (4), small fan angle vertical roller (3), horizontal roller shaft (11), horizontal transmission mechanism, corresponding to the position of the processed pipe (14), along the The upper and lower positions of the outer circumferential surface of the processed pipe (14) are provided with upper and lower large fan-angle flat rollers (4) in the frame (6) along the outer circumferential surface of the processed pipe (14). On both sides, perpendicular to the upper and lower large fan angle flat rollers (4), the small fan angle vertical rollers (3) on both sides are installed, that is, the large fan angle flat rollers (4) from the upper and lower positions and A small fan-corner vertical roller (3) on both sides forms a closed hole with the roller contact surface of the pipe to be processed (14); a horizontal roller shaft on the side of the large fan-angle flat roller (4) in the upper and lower positions (11) Supported by the bearing housing, connected to a horizontal transmission mechanism consisting of a motor (13) and a reduction box (12).
3、 按权利要求 1所述的无缝钢管四辊式热定径机， 其特征在于： 所述的侧 立定径辊组， 其数量在二组以上， 每组侧立定径辊组，由机架 （6)、 大扇面角立 辊 （15 )、 小扇面角平辊 （16)、 垂直辊轴 （11 ' )、 上传动机构组成， 与被加工 管（14)的位置相对应， 沿所述被加工管（14) 的外圆周面的两侧， 于机架（6) 内装设两侧的大扇面角立辊 （15)， 沿所述被加工管 （14) 的外圆周面的上、 下 位置， 与两侧的大扇面角立辊（15 )相垂直， 装设上、 下的小扇面角平辊（16)，
即由两侧的大扇面角立辊 （15) 和上、 下位置的小扇面角平辊 （16) 分别与被 加工管 （14) 的辊触面之间形成了封闭孔； 于两侧的大扇面角立辊 （15) .—侧 的垂直辊轴 （1 ) 上连接由电机 （13')、 减速箱 （12') 组成的上传动机构。 3. The seamless steel tube four-roller heat sizing machine according to claim 1, wherein: the side vertical sizing roller group has two or more sets, and each set of side sizing roller sets is provided by the machine. Frame (6), large fan angle vertical roller (15), small fan angle flat roller (16), vertical roller shaft (11 '), uploading mechanism, corresponding to the position of the processed pipe (14), along the On both sides of the outer circumferential surface of the processed pipe (14), a large fan-angle vertical roller (15) on both sides is mounted in the frame (6) along the outer circumferential surface of the processed pipe (14) , the lower position, perpendicular to the large fan angle vertical rollers (15) on both sides, and the upper and lower small fan angle flat rollers (16) are installed. That is, a closed hole is formed between the large fan angle vertical roller (15) on both sides and the small fan angle flat roller (16) in the upper and lower positions, respectively, and the roller contact surface of the processed tube (14); Large fan angle roller (15).—The vertical roller shaft (1) on the side is connected to the upper transmission mechanism consisting of motor (13') and gearbox (12').
4、 按权利要求 2所述的无缝钢管四辊式热定径机， 其特征在于： 所述的侧 立定径辊组， 其数量在二组以上， 每组侧立定径辊组，由机架 （6)、 大扇面角立 辊 （15)、 小扇面角平辊 （16)、 垂直辊轴 （11')、 上传动机构组成， 与被加工 管（14) 的位置相对应， 沿所述被加工管（14) 的外圆周面的两侧， 于机架（6) 内装设两侧的大扇面角立辊 （15)， 沿所述被加工管 （14) 的外圆周面的上、 下 位置， 与两^ W的大扇面角立辊（15)相垂直， 装设上、 下的小扇面角平辊（16)， 即由两侧的大扇面角立辊 （15) 和上、 下位置的小扇面角平辊 （16) 分别与被 加工管 （14) 的辊触面之间形成了封闭孔； 于两侧的大扇面角立辊 （15) —侧 的垂直辊轴 （11') 上连接由电机 （13')、 减速箱 （12') 组成的上传动机构。 4. The seamless steel tube four-roller heat sizing machine according to claim 2, wherein: the side vertical sizing roller group has a number of two or more sets, and each set of side vertical sizing roller sets is provided by the machine. The frame (6), the large fan angle vertical roller (15), the small fan angle flat roller (16), the vertical roller shaft (11'), and the uploading mechanism are arranged, corresponding to the position of the processed pipe (14), along the On both sides of the outer circumferential surface of the processed pipe (14), a large fan-angle vertical roller (15) on both sides is mounted in the frame (6) along the outer circumferential surface of the processed pipe (14) , the lower position, perpendicular to the large fan angle roller (15) of the two ^ W, the upper and lower small fan angle flat rollers (16), that is, the large fan angle roller (15) and the upper side The small fan-face flat rollers (16) in the lower position respectively form a closed hole with the roller contact surface of the processed tube (14); the large fan-angle vertical rollers (15) on both sides - the vertical roller shaft on the side ( 11') Connect the upper transmission mechanism consisting of motor (13') and gearbox (12').
5、 按权利要求 2或 4所述的无缝钢管四辊式热定径机， 其特征在于: 所述 的每组水平定径辊组还包括消间隙结构 （18), 所述的消间隙结构是一组垫片， 并通过紧固螺钉安装于所述的机架 （6) 与水平辊轴 （11) 的轴承座上下平面端 面的结合位置。
5. The seamless steel tube four-roller heat sizing machine according to claim 2 or 4, wherein: each set of horizontal sizing roller sets further comprises a snubber structure (18), said eliminating gap The structure is a set of spacers and is mounted by a fastening screw at a joint position of the frame (6) and the upper and lower planar end faces of the bearing block of the horizontal roller shaft (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE212008000032U DE212008000032U1 (en) | 2007-04-23 | 2008-03-28 | Low temperature rolling mill with 4 rolls |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100110798A CN101032724A (en) | 2007-04-23 | 2007-04-23 | Seamless pipe four-roller type hot sizing stand |
| CN200710011079.8 | 2007-04-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2008128417A1 true WO2008128417A1 (en) | 2008-10-30 |
Family
ID=38729580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2008/000617 WO2008128417A1 (en) | 2007-04-23 | 2008-03-28 | Seamless steel tube four-roller-type heat sizing mill |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN101032724A (en) |
| DE (1) | DE212008000032U1 (en) |
| WO (1) | WO2008128417A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9782810B2 (en) | 2014-04-01 | 2017-10-10 | Kocks Technik Gmbh & Co. Kg | Roll stand changing device |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101032724A (en) * | 2007-04-23 | 2007-09-12 | 大连三高重工设备有限公司 | Seamless pipe four-roller type hot sizing stand |
| CN101797586A (en) * | 2010-03-30 | 2010-08-11 | 天津钢管集团股份有限公司 | Hot sizing device with four-roll five-machine frame rolling mill and production method thereof |
| CN104117642B (en) * | 2014-07-10 | 2016-02-03 | 中国重型机械研究院股份公司 | A kind of magnesium alloy round billet continuous casting strand draws and send machine |
| CN104259209A (en) * | 2014-08-12 | 2015-01-07 | 无锡市瑞尔精密机械股份有限公司 | Four-roller driven hot-rolled seamless square steel pipe sizing mill |
| CN108481130A (en) * | 2018-03-20 | 2018-09-04 | 昆山巨闳机械科技有限公司 | Polishing steel plate machine |
| CN111589868B (en) * | 2020-06-01 | 2022-03-18 | 成都益世研电工设备有限公司 | Thin-wall metal pipe reducing equipment convenient to disassemble and assemble |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2145021A (en) * | 1983-08-15 | 1985-03-20 | Mannesmann Ag | Rolling mill |
| CN1236869C (en) * | 2000-12-13 | 2006-01-18 | 三菱重工业株式会社 | Roller changing equipment and method for rolling machine |
| CN1733379A (en) * | 2005-08-25 | 2006-02-15 | 北京科技大学 | A frameless vertical short stress line rolling mill |
| CN101032724A (en) * | 2007-04-23 | 2007-09-12 | 大连三高重工设备有限公司 | Seamless pipe four-roller type hot sizing stand |
| CN201030378Y (en) * | 2007-04-23 | 2008-03-05 | 大连三高重工设备有限公司 | Seamless steel pipe four-roller hot sizing machine |
-
2007
- 2007-04-23 CN CNA2007100110798A patent/CN101032724A/en active Pending
-
2008
- 2008-03-28 DE DE212008000032U patent/DE212008000032U1/en not_active Expired - Lifetime
- 2008-03-28 WO PCT/CN2008/000617 patent/WO2008128417A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2145021A (en) * | 1983-08-15 | 1985-03-20 | Mannesmann Ag | Rolling mill |
| CN1236869C (en) * | 2000-12-13 | 2006-01-18 | 三菱重工业株式会社 | Roller changing equipment and method for rolling machine |
| CN1733379A (en) * | 2005-08-25 | 2006-02-15 | 北京科技大学 | A frameless vertical short stress line rolling mill |
| CN101032724A (en) * | 2007-04-23 | 2007-09-12 | 大连三高重工设备有限公司 | Seamless pipe four-roller type hot sizing stand |
| CN201030378Y (en) * | 2007-04-23 | 2008-03-05 | 大连三高重工设备有限公司 | Seamless steel pipe four-roller hot sizing machine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9782810B2 (en) | 2014-04-01 | 2017-10-10 | Kocks Technik Gmbh & Co. Kg | Roll stand changing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101032724A (en) | 2007-09-12 |
| DE212008000032U1 (en) | 2009-12-17 |
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