CN210023294U - Steel pipe high-rigidity four-roller adjustable sizing rack - Google Patents
Steel pipe high-rigidity four-roller adjustable sizing rack Download PDFInfo
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- CN210023294U CN210023294U CN201920662058.0U CN201920662058U CN210023294U CN 210023294 U CN210023294 U CN 210023294U CN 201920662058 U CN201920662058 U CN 201920662058U CN 210023294 U CN210023294 U CN 210023294U
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Abstract
The utility model discloses a steel pipe high rigidity four-roller adjustable sizing frame, which comprises an upper roller box, a vertical roller box and a lower roller box which are stacked together in a three-layer split structure from top to bottom, wherein the upper roller box, the vertical roller box and the lower roller box are fastened into a whole through a positioning mechanism; the upper roll box comprises an upper horizontal roll, the lower roll box comprises a lower horizontal roll, the vertical roll box comprises a first side vertical roll and a second side vertical roll which are arranged at intervals along the transverse direction, the upper horizontal roll and the lower horizontal roll are driving rolls, and the first side vertical roll and the second side vertical roll are driven rolls. When the four-roller adjustable sizing rack works, a sizing forming method with a constant central line is adopted, the rigidity between the first side vertical roller and the second side vertical roller and between the upper horizontal roller and the lower horizontal roller is higher, the influence on the outer diameter precision of a steel pipe due to the fluctuation of rolling force in the production process is greatly reduced, and an ultrahigh-precision welded pipe with the outer diameter deviation of +/-0.2 percent D can be produced.
Description
Technical Field
The utility model provides a four adjustable sizing frames of roller of steel pipe high rigidity. Belongs to the field of straight welded pipe manufacture. Compared with the conventional four-roller type sizing of the steel pipe, the rigidity between the upper horizontal roller and the lower horizontal roller and between the vertical rollers at two sides is extremely high, the tolerance of the outer diameter size of the sized steel pipe is small, and the four-roller type sizing device is particularly suitable for the production of high-strength precise steel pipes with thick walls.
Background
At present, sizing racks in diameter welded pipe production lines at home and abroad mainly comprise: two-roll machine frame (producing steel pipe with maximum diameter less than phi 100 mm) and four-roll machine frame (producing steel pipe with minimum diameter greater than phi 100 mm). Taking a four-roll sizing frame as an example, a conventional four-roll sizing frame is of a gantry type structure. Two side vertical open memorial archways are fixed on a base, and a roller is assembled between the two memorial archways. In order to save investment, a bottom diameter forming method is generally adopted, namely a lower horizontal roller is fixed in the height direction, an upper roller can be adjusted up and down, and a detachable part of the opening memorial archway is an upper roller pressing adjusting mechanism. Used for adjusting the position of the upper roller up and down. The side vertical roller and the adjusting mechanism are generally installed in the slideways of the two side memorial archways separately (or installed on the bearing seat of the lower roller separately by using a gasket and a screw).
Because conventional four-roller sizing mill uses the opening memorial archway for changing the roll convenience, not only has great clearance between each fitting surface, and the stress line of roll atress is longer about moreover, produces great elastic deformation after the atress, consequently, the rigidity between the horizontal roll about the conventional four-roller sizing frame is not high, generally is: 20 to 100 tons/mm.
Only two thin pull rods are arranged between two side vertical memorial archways of a conventional four-roller sizing machine frame, no matter the side vertical rollers and an adjusting mechanism are arranged in a slideway of the memorial archways in the drawing (or a gasket and a screw are independently arranged on a lower roller bearing seat), the rigidity between the two side vertical rollers is very low and is only 2-10 tons/mm.
When a Q345 material welded pipe with phi 219 x 12mm is produced, the reducing rate of a single stand is 0.5%, and the position of a roll gap is 30 degrees, the rolling force between an upper horizontal roll and a lower horizontal roll is as follows: 32 tons, and the rolling force between two side vertical rolls is as follows: 18 tons, so that the fluctuation of the rolling force has a large influence on the dimensional accuracy of the outer diameter of the steel pipe in the production process. The rigidity between an upper roller and a lower roller of a conventional four-roller sizing frame is 40 tons/mm, the rigidity between two side vertical rollers is 4 tons/mm, and if the fluctuation of the rolling force is calculated by 30 percent, the elastic size change between the upper roller and the lower roller is 0.24mm, namely the fluctuation amount of the size of the steel pipe in the vertical direction; and the elastic deformation variation between the two side vertical rolls is 1.35mm, which is the size variation generated by the horizontal position of the steel pipe. The fluctuation of the rolling force causes the change of the outer diameter dimension of the steel pipe by 0.62%. In addition, due to the influences of factors such as roller machining size error, uneven wear of rollers, adjustment level of workers and the like, the outer diameter precision of a steel pipe product of a conventional welded pipe production line can only reach the precision of +/-1% D of the national standard. Therefore, the conventional four-roll sizing stand is difficult to produce high-precision welded pipes.
Patent CN200610014161.1 relates to cold reducing of steel pipes by a four-roll stand process, but does not relate to a specific four-roll stand structure.
Patent CN02208988.8 relates to a steel pipe sizing frame, which adopts three or four roller sizing, although it relates to a concrete frame structure, all the rollers are passive rollers, the sizing mill is unpowered, and it can not be used on the welded pipe line online.
Patent CN200710011079.8 relates to hot sizing of large diameter seamless steel pipe, which adopts four-roller sizing, but the rigidity of the frame is low, and the method can only be applied to the production of hot rolling large diameter steel pipe, and can not be applied to the on-line sizing on the welded pipe line.
Patent CN200820009756.2 relates to a double-transmission-shaft four-roller cross adjustable universal rolling mill and a universal continuous rolling mill set composed thereof, although four rollers can synchronously adjust the roller gap, the requirements on the processing and assembling precision of the rollers, bevel gears and shafting are extremely high, the adjustment amount is limited, the eccentric distance of an eccentric shaft is doubled, each roller can not be independently adjusted, and when the rollers are seriously worn, the roller can not be compensated by adjustment, so that the roller is not suitable for a sizing mill of a welded pipe production line.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects, and provides a steel pipe high-rigidity four-roller adjustable sizing rack which comprises an upper roller box, a vertical roller box and a lower roller box which are stacked together in a three-layer split structure from top to bottom, wherein the upper roller box, the vertical roller box and the lower roller box are fastened into a whole through a positioning mechanism; the upper roll box comprises an upper horizontal roll, the lower roll box comprises a lower horizontal roll, the vertical roll box comprises a first side vertical roll and a second side vertical roll which are arranged at intervals along the transverse direction, the upper horizontal roll and the lower horizontal roll are driving rolls, and the first side vertical roll and the second side vertical roll are driven rolls.
The upper roll box comprises an upper horizontal roll housing frame, an upper mechanical jack and an upper horizontal roll; a piston rod of the upper mechanical jack is movably arranged on the upper horizontal roller housing frame along the up-down direction, and an upper horizontal roller adjusting motor for driving the piston rod of the upper mechanical jack to move up and down is fixedly arranged on the upper horizontal roller housing frame; the top of a piston rod of the upper mechanical jack faces downwards, an upper bearing seat is fixedly installed at the top of the piston rod of the upper mechanical jack, an upper horizontal shaft is rotatably installed on the upper bearing seat and extends along the transverse direction, and the upper horizontal roller is fixed on the upper horizontal shaft; the piston rod of the upper mechanical jack can move along the up-down direction under the driving of the upper horizontal roller adjusting motor;
the lower roller box comprises a lower horizontal roller housing frame, a lower mechanical jack and the lower horizontal roller; a piston rod of the lower mechanical jack is movably arranged on the lower horizontal roller housing frame along the up-down direction, and a lower horizontal roller adjusting motor for driving the piston rod of the lower mechanical jack to move up and down is fixedly arranged on the lower horizontal roller housing frame; the top of a piston rod of the lower mechanical jack faces upwards, a lower bearing seat is fixedly arranged at the top of the piston rod of the lower mechanical jack, a lower horizontal shaft is rotatably arranged on the lower bearing seat and extends along the transverse direction, and the lower horizontal roller is fixed on the lower horizontal shaft; the piston rod of the lower mechanical jack can move in the up-and-down direction under the driving of the lower horizontal roller adjusting motor.
The vertical roll box comprises a vertical roll housing frame, a first side vertical roll device and a second side vertical roll device which are arranged in the vertical roll housing frame;
wherein: the first side vertical roll device comprises a first vertical roll box, a first mechanical jack and a first side vertical roll, the first vertical roll box is movably placed on the vertical roll housing frame, a first vertical roll shaft is installed on the first vertical roll box along the vertical direction, the first side vertical roll is rotatably sleeved on the first vertical roll shaft, a piston rod of the first mechanical jack is movably installed on the vertical roll housing frame, the piston rod of the first mechanical jack extends along the transverse direction, the top of the piston rod of the first mechanical jack is fixed on the first vertical roll box, and a first side vertical roll adjusting motor for driving the piston rod of the first mechanical jack to move along the transverse direction is fixedly installed on the vertical roll housing frame;
the second side vertical roll device comprises a second vertical roll box, a second mechanical jack and a second side vertical roll, the second vertical roll box is movably placed on the vertical roll housing frame, a second vertical roll shaft is installed on the second vertical roll box along the vertical direction, the second side vertical roll is rotatably sleeved on the second vertical roll shaft, a piston rod of the second mechanical jack is movably installed on the vertical roll housing frame, the piston rod of the second mechanical jack extends along the transverse direction, the top of the piston rod of the second mechanical jack is fixed on the second vertical roll box, and a second side vertical roll adjusting motor for driving the piston rod of the second mechanical jack to move along the transverse direction is fixedly installed on the vertical roll housing frame;
and a central hole for the steel pipe to pass through is formed in the vertical roller housing frame along the longitudinal direction.
Further, the vertical roller housing is of a rectangular box-type frame structure when viewed in the vertical direction.
Preferably, the positioning mechanism is a guide stud bolt extending in a vertical direction.
Preferably, the upper roller box comprises an upper horizontal roller housing frame, the vertical roller box comprises a vertical roller housing frame, the lower roller box comprises a lower horizontal roller housing frame, and the upper horizontal roller housing frame, the vertical roller housing frame and the lower horizontal roller housing frame are sequentially overlapped from top to bottom along the vertical direction; the guide post type bolts are four, and the four guide post type bolts are arranged in a rectangular shape and sequentially penetrate through the upper horizontal roller housing frame, the vertical roller housing frame and the lower horizontal roller housing frame along the up-down direction, and the upper horizontal roller housing frame, the vertical roller housing frame and the lower horizontal roller housing frame are fastened together.
The adjustable sizing frame of four rollers in this application adopts the invariable sizing forming method of central line at the during operation, the utility model provides a rigidity between two side edgers of first side edger roll and second side edger roll is high, can reach 200 and give other care 1000 tons/mm. And the rigidity between the upper horizontal roller and the lower horizontal roller is higher and can reach 200-1000 tons/mm.
Because the rigidity between the first side vertical roll and the second side vertical roll and between the upper horizontal roll and the lower horizontal roll is extremely high, the influence on the outer diameter precision of the steel pipe caused by the fluctuation of the rolling force in the production process is greatly reduced, and the ultrahigh-precision welded pipe with the outer diameter deviation of +/-0.2 percent D can be produced.
Drawings
Fig. 1 is a schematic view of a first embodiment of the present invention.
Fig. 2 is a top view of fig. 1.
Fig. 3 is a view from a-a in fig. 1.
Fig. 4 is a view in the direction B-B in fig. 1.
Figure 5 shows a schematic view of the lower roll cassette.
Fig. 6 is a top view of fig. 5.
Fig. 7 is a view in the direction of C-C in fig. 5.
Fig. 8 is a view in the direction D-D in fig. 5.
Fig. 9 is a schematic view of the structure of the vertical roll box.
Fig. 10 is a top view of fig. 9.
Fig. 11 is a view from E-E in fig. 9.
Fig. 12 is a view in the direction F-F in fig. 9.
Detailed Description
Example 1
In the present application, a direction parallel to the axial direction of a steel pipe formed when the frame is operated is referred to as a longitudinal direction, and a horizontal direction perpendicular to the longitudinal direction is a transverse direction, and in fig. 2, an arrow X indicates the transverse direction of the apparatus and an arrow Y indicates the longitudinal direction of the apparatus.
Referring to fig. 1 and 4, in fig. 1, and the various figures described below, reference numeral 100 denotes a steel pipe to be processed by the apparatus.
The utility model provides a four adjustable sizing frames of roller of steel pipe high rigidity, its structure specifically is: the device comprises an upper roll box 10, a vertical roll box 20 and a lower roll box 30 which are stacked together in a three-layer split structure from top to bottom, wherein the upper roll box, the vertical roll box and the lower roll box are fastened into a whole through a positioning mechanism 60.
Referring to fig. 5-8, the lower roll box 30 includes a lower horizontal roll housing 36, two lower mechanical jacks 39, and a lower horizontal roll 31. Two lower mechanical jacks 39 are arranged at intervals in the transverse direction, each lower mechanical jack 39 includes a lower piston rod 390, a worm gear 391 screwed on the lower piston rod 390, the worm gear 391 is held in the lower horizontal roller housing frame 36 via a fixing cover 361, so that the worm gear 391 is rotatably mounted on the horizontal roller housing frame 36 via a bearing, and the lower piston rod 390 extends in the vertical direction. The lower horizontal roller adjusting motor 37 is fixedly arranged on the side surface of the lower horizontal roller housing frame 36 through a lower reduction box 38, the output shaft of the lower reduction box 38 is connected with a worm 392, and the worm 392 is meshed with the worm wheel 391.
The top of the lower piston rod 390 faces upward, a lower bearing seat 32 is fixedly attached to the top of the lower piston rod 390, a lower horizontal shaft 34 is rotatably attached to the lower bearing seat 32 via the lower bearing 33, and the lower horizontal shaft 34 extends in the lateral direction and is supported by the tops of the lower piston rods of the two lower mechanical jacks 39. The lower horizontal roller 31 is fixedly attached to an intermediate position of the lower horizontal shaft 34.
Under the drive of the lower horizontal roller adjusting motor 37, the worm 392 drives the worm wheel 391 to rotate, and under the drive of the screw thread, the lower piston rod is moved in the up-and-down direction to adjust the height and levelness of the lower horizontal roller 31.
A lower universal joint 35 is mounted on one end of the lower horizontal shaft 34, and the lower universal joint 35 is fixed to the end of the lower horizontal shaft 34 via a quick connector 351. A lower roll driving motor, which is not shown in the drawings, is mounted on the lower universal joint 35.
The upper roller box comprises an upper horizontal roller housing frame, an upper mechanical jack and the upper horizontal roller; a piston rod of the upper mechanical jack is movably arranged on the upper horizontal roller housing frame, and an upper horizontal roller adjusting motor for driving the piston rod of the upper mechanical jack to move up and down is fixedly arranged on the upper horizontal roller housing frame; the top of a piston rod of the upper mechanical jack faces downwards, an upper bearing seat is fixedly installed at the top of the piston rod of the upper mechanical jack, an upper horizontal shaft is rotatably installed on the upper bearing seat and extends along the transverse direction, and the upper horizontal roller is fixed on the upper horizontal shaft; the piston rod of the upper mechanical jack can move in the up-and-down direction under the driving of the upper horizontal roller adjusting motor.
An upper universal joint shaft is arranged at one end of the upper horizontal shaft and is fixed at the end part of the upper horizontal shaft through a quick connecting piece. An upper roll driving motor is arranged on the upper universal shaft.
The structure of the upper roller box 10 is substantially the same as that of the lower roller box 30, the upper roller box 10 and the lower roller box 30 are symmetrically arranged relative to a horizontal plane, and the specific structure of the upper roller box 10 can refer to fig. 5-8, which is not described again.
The upper horizontal roller and the lower horizontal roller are respectively driven by an upper roller driving motor and a lower roller driving motor which are driving rollers.
Referring to fig. 9-12, the vertical rolling box 20 includes a vertical rolling housing 26, a first side vertical rolling device 210 and a second side vertical rolling device 220 mounted in the vertical rolling housing 26, and the vertical rolling housing 26 is a rectangular box-type frame structure as viewed in a vertical direction.
The first side vertical roll device 210 will be described below.
The first side edger unit 210 includes a first edger box 22, a first mechanical jack 29, and a first side edger 21. The first vertical roller box 22 is movably placed on the vertical roller housing frame 26, a first vertical roller shaft 24 is vertically installed on the first vertical roller box 22, and the first side vertical roller 21 is rotatably sleeved on the first vertical roller shaft 24 through a first bearing 241.
The first piston rod 290 of the first mechanical jack 29 is movably mounted on the housing stand 26. The first piston rod 290 extends along the transverse direction, the top of the first piston rod is fixed at the outer side of the first vertical roller box 22, a first side vertical roller adjusting motor 27 is fixedly installed at the outer side of the vertical roller housing frame 26, the first side vertical roller adjusting motor 27 is installed on the vertical roller housing frame 26 through a first reduction box 28, and the first side vertical roller adjusting motor 27 is used for driving the first piston rod of the first mechanical jack to move along the transverse direction.
In the present embodiment, two first piston rods 290 are installed along the longitudinal direction, and a first gear 291 is threaded on each first piston rod 290. An output gear 292 is attached to an output shaft of the first side vertical roll adjustment motor 27, the output gear 292 is engaged with one of the first gears 291, the first gear 291 is engaged with the other first gear 291 via a bridge gear 293, and the two first gears 291 are rotated by the driving of the first side vertical roll adjustment motor 27, and the two first piston rods 290 are moved in the lateral direction by the driving of the screw, thereby pushing the first side vertical roll 21 to move in the lateral direction.
The second side vertical roll device 220 comprises a second vertical roll box, a second mechanical jack and a second side vertical roll 25, the second vertical roll box is movably placed on the vertical roll housing frame, a second vertical roll shaft is installed on the second vertical roll box along the vertical direction, the second side vertical roll is rotatably connected to the second vertical roll shaft, a piston rod of the second mechanical jack is movably installed on the vertical roll housing frame, the top of the piston rod of the second mechanical jack is fixed on the second vertical roll box, and a second side vertical roll adjusting motor used for driving the piston rod of the second mechanical jack to move along the transverse direction is fixedly installed on the vertical roll housing frame.
The structure of the second side vertical roll device 220 is substantially the same as that of the first side vertical roll device 210, the second side vertical roll device 220 and the first side vertical roll device 210 are symmetrically arranged relative to a vertical plane extending along the longitudinal direction, and the specific structure of the second side vertical roll device 220 can refer to fig. 9-12, which is not repeated.
In the longitudinal direction, a center hole 261 through which a steel pipe passes is opened at the center of the vertical roll housing frame 20.
Since there is no power drive, the first side edger roll 21 and the second side edger roll 25 are both driven rolls, and are arranged at an interval in the lateral direction.
In this embodiment, the lower horizontal roller housing frame 36 is substantially rectangular, a lower through hole 302 is respectively formed at four corners of the lower horizontal roller housing frame 36, a middle through hole 202 is formed on the vertical roller housing frame 26 corresponding to each lower through hole 302, and an upper through hole 102 is formed on the upper horizontal roller housing frame corresponding to each middle through hole 202. After the upper roll box, the vertical roll box and the lower roll box are sequentially stacked, each lower through hole 302 is communicated with an upper through hole 102 through a middle through hole 202 to form a positioning bolt hole, a guide pillar type bolt 60 is installed in each positioning bolt hole, a guide pillar 61 of the guide pillar type bolt penetrates through the positioning bolt hole, a fixing block 63 is embedded on one end, extending out of the lower through hole 302 downwards, of the guide pillar 61, and a nut 62 is screwed on one threaded end, extending out of the upper through hole 102 upwards, of the guide pillar. The upper roll box 10, the vertical roll box 20 and the lower roll box 30 are fastened together by nuts to form an integral body.
The circular passage 40 formed by the upper horizontal roll, the lower horizontal roll, the first side vertical roll and the second side vertical roll is used to size the steel pipe 100.
The embodiment can be used as the 219-welding pipe production line equipment. When the embodiment works, a central constant forming method is adopted, and the height positions of the two side vertical rollers do not need to be adjusted. The upper horizontal roller and the lower horizontal roller are driving rollers, the inner structures of the upper roller box 10 and the lower roller box 30 are completely the same, and the adjusting mechanisms are respectively arranged in the upper horizontal roller housing frame and the lower horizontal roller housing frame, so that the structure is very compact.
The inner diameter of the central hole 261 is generally 10-40mm larger than the maximum outer diameter of the steel pipe produced by the unit, and in this embodiment, the inner diameter of the central hole 261 is 240 mm.
In this embodiment, the diameter of the guide post bolt 60 is 120mm, and the upper roller box 10, the vertical roller box 20 and the lower roller box 30 are locked together by the nut 62, so that the three-layer structure is assembled into an integral high-rigidity frame.
Through pre-tightening four guide post type bolts with large diameters by nuts, the pre-tightening force can reach more than 300 tons, and the rigidity between the upper horizontal roller and the lower horizontal roller after pre-tightening is greatly improved, so that the rigidity between the upper horizontal roller and the lower horizontal roller can reach 600 tons/mm. The rigidity between the first side vertical roll and the second side vertical roll at this time was 400 tons/mm. This value is much greater than the stiffness of a conventional four roll sizing mill.
When the embodiment is used for producing Q345 material welded pipes with phi 219 x 12mm, the reducing rate of a single stand is 0.5%, and when the roll gap position is 30 degrees, the rolling force between an upper horizontal roll and a lower horizontal roll is as follows: 32 tonnes and a stiffness of 600 tonnes/mm. The rolling force between the first side vertical roll and the second side vertical roll is as follows: 18 tons and a stiffness of 400 tons/mm.
If the rolling force fluctuation is calculated by 30%, the elastic size change between the upper horizontal roll and the lower horizontal roll is 0.016mm, namely the fluctuation amount of the size of the steel pipe in the vertical direction is only 16 mu m; and the elastic deformation variation between the first side vertical roll and the second side vertical roll is 0.0135mm, namely the size variation generated by the horizontal position of the steel pipe is 13.5 mu m, and is only 0.008 percent D compared with the outer diameter of the steel pipe, namely, the rigidity of the high-rigidity four-roll adjustable rack in the application is extremely high, and the variation of the outer diameter of the steel pipe caused by rolling force fluctuation is only one percent of that of a conventional four-roll sizing rack, so that the high-precision steel pipe can be produced.
Therefore, the high-rigidity four-roller adjustable sizing rack for the steel pipe is suitable for producing precision steel pipes with high requirements on dimensional accuracy, and is also suitable for producing high-strength thick-wall steel pipes by utilizing the advantage of large rolling force.
Claims (6)
1. The high-rigidity four-roller adjustable sizing rack for the steel pipe is characterized by comprising an upper roller box, a vertical roller box and a lower roller box which are stacked together in a three-layer split structure from top to bottom, wherein the upper roller box, the vertical roller box and the lower roller box are fastened into a whole through a positioning mechanism; the upper roll box comprises an upper horizontal roll, the lower roll box comprises a lower horizontal roll, the vertical roll box comprises a first side vertical roll and a second side vertical roll which are arranged at intervals along the transverse direction, the upper horizontal roll and the lower horizontal roll are driving rolls, and the first side vertical roll and the second side vertical roll are driven rolls.
2. A steel pipe high stiffness four roll adjustable sizing stand according to claim 1,
the upper roller box comprises an upper horizontal roller housing frame, an upper mechanical jack and the upper horizontal roller; a piston rod of the upper mechanical jack is movably arranged on the upper horizontal roller housing frame along the up-down direction, and an upper horizontal roller adjusting motor for driving the piston rod of the upper mechanical jack to move up and down is fixedly arranged on the upper horizontal roller housing frame; the top of a piston rod of the upper mechanical jack faces downwards, an upper bearing seat is fixedly installed at the top of the piston rod of the upper mechanical jack, an upper horizontal shaft is rotatably installed on the upper bearing seat and extends along the transverse direction, and the upper horizontal roller is fixed on the upper horizontal shaft; the piston rod of the upper mechanical jack can move along the up-down direction under the driving of the upper horizontal roller adjusting motor;
the lower roller box comprises a lower horizontal roller housing frame, a lower mechanical jack and the lower horizontal roller; a piston rod of the lower mechanical jack is movably arranged on the lower horizontal roller housing frame along the up-down direction, and a lower horizontal roller adjusting motor for driving the piston rod of the lower mechanical jack to move up and down is fixedly arranged on the lower horizontal roller housing frame; the top of a piston rod of the lower mechanical jack faces upwards, a lower bearing seat is fixedly arranged at the top of the piston rod of the lower mechanical jack, a lower horizontal shaft is rotatably arranged on the lower bearing seat and extends along the transverse direction, and the lower horizontal roller is fixed on the lower horizontal shaft; the piston rod of the lower mechanical jack can move in the up-and-down direction under the driving of the lower horizontal roller adjusting motor.
3. The steel pipe high-rigidity four-roller adjustable sizing stand according to claim 1,
the vertical roll box comprises a vertical roll housing frame, a first side vertical roll device and a second side vertical roll device which are arranged in the vertical roll housing frame;
wherein:
the first side vertical roll device comprises a first vertical roll box, a first mechanical jack and a first side vertical roll, the first vertical roll box is movably placed on the vertical roll housing frame, a first vertical roll shaft is installed on the first vertical roll box along the vertical direction, the first side vertical roll is rotatably sleeved on the first vertical roll shaft, a piston rod of the first mechanical jack is movably installed on the vertical roll housing frame, the piston rod of the first mechanical jack extends along the transverse direction, the top of the piston rod of the first mechanical jack is fixed on the first vertical roll box, and a first side vertical roll adjusting motor for driving the piston rod of the first mechanical jack to move along the transverse direction is fixedly installed on the vertical roll housing frame;
the second side vertical roll device comprises a second vertical roll box, a second mechanical jack and a second side vertical roll, the second vertical roll box is movably placed on the vertical roll housing frame, a second vertical roll shaft is installed on the second vertical roll box along the vertical direction, the second side vertical roll is rotatably sleeved on the second vertical roll shaft, a piston rod of the second mechanical jack is movably installed on the vertical roll housing frame, the piston rod of the second mechanical jack extends along the transverse direction, the top of the piston rod of the second mechanical jack is fixed on the second vertical roll box, and a second side vertical roll adjusting motor for driving the piston rod of the second mechanical jack to move along the transverse direction is fixedly installed on the vertical roll housing frame;
and a central hole for the steel pipe to pass through is formed in the vertical roller housing frame along the longitudinal direction.
4. A steel pipe high stiffness four roll adjustable sizing frame according to claim 3,
and the vertical roller memorial archway frame is of a rectangular box-type frame structure when being observed along the vertical direction.
5. The steel pipe high-rigidity four-roller adjustable sizing stand according to claim 1,
the positioning mechanism is a guide pillar type bolt extending along the vertical direction.
6. A steel pipe high stiffness four roll adjustable sizing stand according to claim 5,
the upper roller box comprises an upper horizontal roller housing frame, the vertical roller box comprises a vertical roller housing frame, the lower roller box comprises a lower horizontal roller housing frame, and the upper horizontal roller housing frame, the vertical roller housing frame and the lower horizontal roller housing frame are sequentially overlapped from top to bottom along the vertical direction; the guide column type bolts are four, the four bolts are arranged in a rectangular shape and sequentially penetrate through the upper horizontal roller housing frame, the vertical roller housing frame and the lower horizontal roller housing frame along the up-down direction, and the upper horizontal roller housing frame, the vertical roller housing frame and the lower horizontal roller housing frame are fastened together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920662058.0U CN210023294U (en) | 2019-05-09 | 2019-05-09 | Steel pipe high-rigidity four-roller adjustable sizing rack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920662058.0U CN210023294U (en) | 2019-05-09 | 2019-05-09 | Steel pipe high-rigidity four-roller adjustable sizing rack |
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| Publication Number | Publication Date |
|---|---|
| CN210023294U true CN210023294U (en) | 2020-02-07 |
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| CN201920662058.0U Active CN210023294U (en) | 2019-05-09 | 2019-05-09 | Steel pipe high-rigidity four-roller adjustable sizing rack |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112170533A (en) * | 2020-09-18 | 2021-01-05 | 佛山市卓粤建澜机械科技有限公司 | Universal automatic pipe making machine |
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2019
- 2019-05-09 CN CN201920662058.0U patent/CN210023294U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112170533A (en) * | 2020-09-18 | 2021-01-05 | 佛山市卓粤建澜机械科技有限公司 | Universal automatic pipe making machine |
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