CN219188141U - Four-roller centering roller device - Google Patents
Four-roller centering roller device Download PDFInfo
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- CN219188141U CN219188141U CN202223318908.6U CN202223318908U CN219188141U CN 219188141 U CN219188141 U CN 219188141U CN 202223318908 U CN202223318908 U CN 202223318908U CN 219188141 U CN219188141 U CN 219188141U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
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Abstract
The utility model discloses a four-roller centering roller device, which solves the problems that a rolled steel pipe is easy to drop along the vertical direction and the wall thickness and ellipticity of the rolled steel pipe are out of tolerance; a centering roller is uniformly distributed above, below, left and right of the rolling center line to form a four-roller centering arrangement mode; four centering pins are arranged on a frame around a rolling center, a special-shaped swing arm is hinged on each centering pin, the four special-shaped swing arms are connected together through a connecting rod to form three parallelogram four-bar mechanisms which can be simultaneously linked, the four centering rollers are always arranged on one circumference through the three parallelogram four-bar mechanisms which can be simultaneously swung, the three parallelogram four-bar mechanisms are under the control of the same electric control oil cylinder, synchronous swinging is realized, synchronous adjustment of opening degree is realized, the four centering rollers are always located on the circumference of the same circle, and the circle centers of the circles are always coincident with the rolling center line.
Description
Technical Field
The utility model relates to seamless steel tube production equipment in the metallurgical industry, in particular to a centering roller device for seamless steel tube production.
Background
Centering roller devices are arranged in seamless steel tube production equipment such as a perforating machine, a tube rolling machine and the like; the centering roller device plays a role in supporting the ejector rod or the core rod in the rolling process and also plays a role in guiding the steel pipe in the rolling process so as to prevent the steel pipe in the rolling process from being scratched due to the swinging and prevent the ovality of the rolled steel pipe from exceeding; the existing centering roller device is generally a three-roller centering roller, centering axes of the three rollers are arranged at an angle of 120 degrees relative to each other, the three-roller centering roller is arranged on the same circumference, one roller is arranged right above a rolling line, and the other two rollers are arranged on the left side and the right side of the rolling line; the positions of the three rollers are controlled through the hydraulic cylinders, the opening degree of the three rollers is adjusted, and the opening and closing of the rollers above the rolling line are independently controlled through the other hydraulic cylinder, so that the steel pipe is discharged; the arrangement of such a three-roll centering roller device has the following problems: (1) The steel tube to be rolled is easy to drop along the vertical direction due to the lack of a supporting roller in the vertical direction below the rolling line, so that the steel tube is damaged and clamped; (2) When the opening degree of the three-roller centering roller is adjusted, the centering center is easy to deviate, so that the wall thickness and ellipticity of the rolled steel pipe are out of tolerance.
Disclosure of Invention
The utility model provides a four-roller centering roller device, which solves the defects of the existing three-roller centering roller device on centering roller arrangement.
The utility model solves the technical problems by the following technical proposal:
the general conception of the utility model is that: a centering roller is uniformly distributed above, below, left and right of the rolling center line to form a four-roller centering arrangement mode; four centering pins are respectively arranged on a frame around a rolling center, a special-shaped swing arm is hinged on each centering pin, the four special-shaped swing arms are connected together through a connecting rod to form three parallelogram four-bar mechanisms which can be simultaneously linked, the four centering rollers are always arranged on one circumference through the three parallelogram four-bar mechanisms which can be simultaneously swung, and the three parallelogram four-bar mechanisms are synchronously swung under the control of the same electric control oil cylinder, so that the synchronous adjustment of the opening degree is realized, the four centering rollers are always positioned on the circumference of the same circle, and the circle centers of the circles are always coincident with the rolling center line.
A four-roller centering roller device comprises a frame, a centering steel tube, an electric control hydraulic cylinder for opening degree adjustment, a discharge port opening and closing control hydraulic cylinder, an upper centering roller, a right centering roller, a lower centering roller and a left centering roller, wherein a rolling center line is arranged in the frame; the upper right centering pin shaft is hinged with a V-shaped swing arm, the middle part of the V-shaped swing arm is hinged with the upper right centering pin shaft, the left end of the V-shaped swing arm is provided with an upper centering roller, and the right end of the V-shaped swing arm is provided with a first connecting pin shaft; the upper right end of the W-shaped swing arm is provided with a third connecting pin shaft, and the lower right end of the W-shaped swing arm is provided with a fourth connecting pin shaft; a Y-shaped swing arm is hinged on the left lower centering pin shaft, the middle part of the Y-shaped swing arm is hinged on the left lower centering pin shaft, a lower centering roller is arranged at the right upper end of the Y-shaped swing arm, a fifth connecting pin shaft is arranged at the lower end of the Y-shaped swing arm, and a sixth connecting pin shaft is arranged at the left upper end of the Y-shaped swing arm; an inverted V-shaped swing arm is hinged on the left upper centering pin shaft, the middle part of the inverted V-shaped swing arm is hinged on the left upper centering pin shaft, the right end of the inverted V-shaped swing arm is provided with a left centering roller, and the left end of the inverted V-shaped swing arm is provided with a seventh connecting pin shaft; an opening and closing control hydraulic cylinder for a discharge hole is connected between the first connecting pin shaft and the third connecting pin shaft, an electric control hydraulic cylinder for opening degree adjustment is fixedly arranged in the middle of the right side of the frame, the top end of an output shaft of the electric control hydraulic cylinder for opening degree adjustment is hinged with the second connecting pin shaft, a first connecting rod is connected between the fourth connecting pin shaft and the fifth connecting pin shaft, and a second connecting rod is connected between the sixth connecting pin shaft and the seventh connecting pin shaft; the upper centering roller, the right centering roller, the lower centering roller and the left centering roller are arranged on the circumference of the same circle, and the center of the circle is overlapped with the rolling center line.
After the upper right centering pin shaft, the first connecting pin shaft, the third connecting pin shaft and the lower right centering pin shaft are sequentially connected, a right-side four-bar parallelogram is formed, and the upper right centering pin shaft, the first connecting pin shaft, the third connecting pin shaft and the lower right centering pin shaft are four vertexes of the right-side four-bar parallelogram; after the right lower centering pin shaft, the fourth connecting pin shaft, the fifth connecting pin shaft and the left lower centering pin shaft are sequentially connected, a lower four-bar parallelogram is formed, and the right lower centering pin shaft, the fourth connecting pin shaft, the fifth connecting pin shaft and the left lower centering pin shaft are four vertexes of the lower four-bar parallelogram; after the left lower centering pin shaft, the left upper centering pin shaft, the seventh connecting pin shaft and the sixth connecting pin shaft are sequentially connected, a left four-bar parallelogram is formed, and the left lower centering pin shaft, the left upper centering pin shaft, the seventh connecting pin shaft and the sixth connecting pin shaft are four vertexes of the left four-bar parallelogram.
In the opening degree adjusting method based on the four-roller centering roller, if the centered steel pipe is thinner, the centering opening degree needs to be adjusted for a small time:
the electric control hydraulic cylinder for adjusting the opening degree is controlled, so that an output shaft of the electric control hydraulic cylinder stretches out leftwards, the stretched output shaft pushes a W-shaped swing arm through a second connecting pin shaft, and the W-shaped swing arm swings anticlockwise around a lower right centering pin shaft, so that a right centering roller approaches to a rolling center line;
when the W-shaped swing arm swings anticlockwise, the hydraulic cylinder and the first connecting pin shaft are controlled by opening and closing of the discharge hole to push the V-shaped swing arm, and the V-shaped swing arm swings anticlockwise around the upper right centering pin shaft, so that the upper centering roller approaches to the rolling center line;
the Y-shaped swing arm rotates anticlockwise around the left lower centering pin shaft through the first connecting rod and the fifth connecting pin shaft, and the lower centering roller approaches to the rolling center line;
in the process of anticlockwise rotation of the Y-shaped swing arm, the left lower end of the Y-shaped swing arm pushes the inverted V-shaped swing arm through a sixth connecting pin shaft and a second connecting rod, and the inverted V-shaped swing arm rotates anticlockwise around the left upper centering pin shaft, so that the left centering roller approaches to the rolling center line;
therefore, the upper centering roller, the right centering roller, the lower centering roller and the left centering roller are synchronously close to the rolling center line, and the aim of reducing the centering opening degree is fulfilled.
If the centered steel pipe is thick, when the centering opening degree needs to be adjusted to be large:
controlling an electric control hydraulic cylinder for adjusting the opening degree to enable an output shaft of the electric control hydraulic cylinder to retract rightwards, and enabling the retracted output shaft to pull a W-shaped swing arm through a second connecting pin shaft, wherein the W-shaped swing arm swings clockwise around a right lower centering pin shaft to enable a right centering roller to be far away from a rolling center line;
when the W-shaped swing arm swings clockwise, the hydraulic cylinder and the first connecting pin shaft are controlled by opening and closing of the discharge hole, the V-shaped swing arm is pulled, and the V-shaped swing arm swings clockwise around the upper right centering pin shaft, so that the upper centering roller is far away from the rolling center line;
the Y-shaped swing arm rotates clockwise around the left lower centering pin shaft through the first connecting rod and the fifth connecting pin shaft, and the lower centering roller is far away from the rolling center line;
in the clockwise rotating process of the Y-shaped swing arm, the left lower end of the Y-shaped swing arm pulls the inverted V-shaped swing arm through a sixth connecting pin shaft and a second connecting rod, and the inverted V-shaped swing arm also rotates clockwise around the left upper centering pin shaft, so that the left centering roller is far away from the rolling center line;
therefore, the upper centering roller, the right centering roller, the lower centering roller and the left centering roller are synchronously far away from the rolling center line, and the purpose of adjusting the opening degree is achieved.
If the centered steel tube is moved out of the rolling center line:
the hydraulic cylinder is controlled to open and close by controlling the discharge hole, so that the stretching shaft of the hydraulic cylinder drives the V-shaped swing arm to swing through the first connecting pin shaft, the V-shaped swing arm swings clockwise around the upper right centering pin shaft, the centering roller is separated from the position right above the rolling center line, and an upward channel is provided for the removal of the centered steel pipe.
The utility model has simple structure, and the rollers on the lower side of the rolling line are supported in the vertical direction, so that the steel pipe is effectively prevented from falling off from the vertical direction easily; the swing arms of each roller and the swing arms of the adjacent rollers form a group of parallelogram mechanisms, and after the opening degree is adjusted, the centering center of the mechanism cannot deviate at all.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic view of the structure of the V-shaped swing arm 14 of the present utility model;
FIG. 3 is a schematic view of the structure of the W-shaped swing arm 16 of the present utility model;
fig. 4 is a schematic view of the structure of the Y-shaped swing arm 20 of the present utility model;
fig. 5 is a schematic view of the structure of the inverted V-shaped swing arm 23 of the present utility model.
Detailed Description
The utility model is described in detail below with reference to the attached drawing figures:
a four-roller centering roller device comprises a frame 1, a centering steel tube 2, an opening degree adjusting electric control hydraulic cylinder 3, a discharge opening and closing control hydraulic cylinder 4, an upper centering roller 5, a right centering roller 6, a lower centering roller 7 and a left centering roller 8, wherein a rolling center line 13 is arranged in the frame 1, a right upper centering pin 9 is arranged on the frame 1 at the right upper part of the rolling center line 13, a right lower centering pin 10 is arranged on the frame 1 at the right lower part of the rolling center line 13, a left lower centering pin 11 is arranged on the frame 1 at the left lower part of the rolling center line 13, and a left upper centering pin 12 is arranged on the frame 1 at the left upper part of the rolling center line 13; the upper right centering pin shaft 9 is hinged with a V-shaped swing arm 14, the middle part of the V-shaped swing arm 14 is hinged on the upper right centering pin shaft 9, the left end of the V-shaped swing arm 14 is provided with an upper centering roller 5, and the right end of the V-shaped swing arm 14 is provided with a first connecting pin shaft 15; the lower right centering pin shaft 10 is hinged with a W-shaped swing arm 16, the lower left end of the W-shaped swing arm 16 is hinged on the lower right centering pin shaft 10, the upper left end of the W-shaped swing arm 16 is provided with a right centering roller 6, the top end of the middle part of the W-shaped swing arm 16 is provided with a second connecting pin shaft 17, the upper right end of the W-shaped swing arm 16 is provided with a third connecting pin shaft 18, and the lower right end of the W-shaped swing arm 16 is provided with a fourth connecting pin shaft 19; a Y-shaped swing arm 20 is hinged on the left lower centering pin shaft 11, the middle part of the Y-shaped swing arm 20 is hinged on the left lower centering pin shaft 11, a lower centering roller 7 is arranged at the right upper end of the Y-shaped swing arm 20, a fifth connecting pin shaft 21 is arranged at the lower end of the Y-shaped swing arm 20, and a sixth connecting pin shaft 22 is arranged at the left upper end of the Y-shaped swing arm 20; an inverted V-shaped swing arm 23 is hinged on the upper left centering pin shaft 12, the middle part of the inverted V-shaped swing arm 23 is hinged on the upper left centering pin shaft 12, the right end of the inverted V-shaped swing arm 23 is provided with a left centering roller 8, and the left end of the inverted V-shaped swing arm 23 is provided with a seventh connecting pin shaft 24; a discharge port opening and closing control hydraulic cylinder 4 is connected between the first connecting pin shaft 15 and the third connecting pin shaft 18, an opening degree adjusting electric control hydraulic cylinder 3 is fixedly arranged in the middle of the right side of the frame 1, the top end of an output shaft of the opening degree adjusting electric control hydraulic cylinder 3 is hinged with the second connecting pin shaft 17, a first connecting rod 25 is connected between the fourth connecting pin shaft 19 and the fifth connecting pin shaft 21, and a second connecting rod 26 is connected between the sixth connecting pin shaft 22 and the seventh connecting pin shaft 24; the upper centering roller 5, the right centering roller 6, the lower centering roller 7 and the left centering roller 8 are arranged on the circumference of the same circle, and the center of the circle is overlapped with the rolling center line 13; according to the utility model, the four swing arms are hinged together through the hinge pins which are arranged in a square shape on the frame around the rolling center line 13, and the four swing arms are hinged together through the connecting rods, so that synchronous linkage of the four swing arms is realized, the four centering rollers connected to the four swing arms are always positioned on the circumference of the same circle in adjustment, the circle centers of the circles are all coincident with the rolling center line 13, that is, in the adjustment process, the circles of the four centering rollers are concentric circles.
After the upper right centering pin shaft 9, the first connecting pin shaft 15, the third connecting pin shaft 18 and the lower right centering pin shaft 10 are sequentially connected, a right-side four-bar parallelogram is formed, and the upper right centering pin shaft 9, the first connecting pin shaft 15, the third connecting pin shaft 18 and the lower right centering pin shaft 10 are four vertexes of the right-side four-bar parallelogram; after the right lower centering pin shaft 10, the fourth connecting pin shaft 19, the fifth connecting pin shaft 21 and the left lower centering pin shaft 11 are sequentially connected, a lower four-bar parallelogram is formed, and the right lower centering pin shaft 10, the fourth connecting pin shaft 19, the fifth connecting pin shaft 21 and the left lower centering pin shaft 11 are four vertexes of the lower four-bar parallelogram; after the left lower centering pin shaft 11, the left upper centering pin shaft 12, the seventh connecting pin shaft 24 and the sixth connecting pin shaft 22 are sequentially connected, a left-side four-bar parallelogram is formed, and the left lower centering pin shaft 11, the left upper centering pin shaft 12, the seventh connecting pin shaft 24 and the sixth connecting pin shaft 22 are four vertexes of the left-side four-bar parallelogram; the three parallelograms are connected with each other to finish the synchronous adjustment of the four centering rollers, realize the adjustment of the centering opening degree and ensure that the center line of the opening is always at the coincident position.
The utility model provides an opening degree adjusting method based on four roller centering rollers, including frame 1, centered steel pipe 2, automatically controlled pneumatic cylinder 3 for opening degree adjustment, discharge gate open and shut control pneumatic cylinder 4, upper centering roller 5, right centering roller 6, lower centering roller 7 and left centering roller 8, be provided with rolling central line 13 in frame 1, on the upper right frame 1 of rolling central line 13, be provided with upper right centering round pin axle 9, on the lower right frame 1 of rolling central line 13, be provided with lower right centering round pin axle 10, on the lower left frame 1 of rolling central line 13, be provided with lower left centering round pin axle 11, on the upper left frame 1 of rolling central line 13, be provided with upper left centering round pin axle 12; a V-shaped swing arm 14 is hinged on the upper right centering pin shaft 9, the middle part of the V-shaped swing arm 14 is hinged on the upper right centering pin shaft 9, the left end of the V-shaped swing arm (14) is provided with an upper centering roller 5, and the right end of the V-shaped swing arm 14 is provided with a first connecting pin shaft 15; a W-shaped swing arm 16 is hinged on the right lower centering pin shaft 10, the left lower end of the W-shaped swing arm 16 is hinged on the right lower centering pin shaft 10, the left upper end of the W-shaped swing arm 16 is provided with a right centering roller 6, the top end of the middle part of the W-shaped swing arm 16 is provided with a second connecting pin shaft 17, the right upper end of the W-shaped swing arm 16 is provided with a third connecting pin shaft 18, and the right lower end of the W-shaped swing arm 16 is provided with a fourth connecting pin shaft 19; a Y-shaped swing arm 20 is hinged on the left lower centering pin shaft 11, the middle part of the Y-shaped swing arm 20 is hinged on the left lower centering pin shaft 11, the right upper end of the Y-shaped swing arm 20 is provided with a lower centering roller 7, the lower end of the Y-shaped swing arm 20 is provided with a fifth connecting pin shaft 21, and the left upper end of the Y-shaped swing arm 20 is provided with a sixth connecting pin shaft 22; an inverted V-shaped swing arm 23 is hinged on the upper left centering pin shaft 12, the middle part of the inverted V-shaped swing arm 23 is hinged on the upper left centering pin shaft 12, the right end of the inverted V-shaped swing arm 23 is provided with a left centering roller 8, and the left end of the inverted V-shaped swing arm 23 is provided with a seventh connecting pin shaft 24; a discharge port opening and closing control hydraulic cylinder 4 is connected between the first connecting pin shaft 15 and the third connecting pin shaft 18, an opening degree adjusting electric control hydraulic cylinder 3 is fixedly arranged in the middle of the right side of the frame 1, the top end of an output shaft of the opening degree adjusting electric control hydraulic cylinder 3 is hinged with the second connecting pin shaft 17, a first connecting rod 25 is connected between the fourth connecting pin shaft 19 and the fifth connecting pin shaft 21, and a second connecting rod 26 is connected between the sixth connecting pin shaft 22 and the seventh connecting pin shaft 24; it is characterized in that the method comprises the steps of,
if the centered steel pipe 2 is relatively thin, the centering opening degree needs to be adjusted to be small:
the electric control hydraulic cylinder 3 for adjusting the opening degree is controlled, so that an output shaft of the electric control hydraulic cylinder extends leftwards, the extending output shaft pushes the W-shaped swing arm 16 through the second connecting pin shaft 17, the W-shaped swing arm 16 swings anticlockwise around the right lower centering pin shaft 10, and the right centering roller 6 approaches to the rolling center line 13;
when the W-shaped swing arm 16 swings anticlockwise, the W-shaped swing arm 16 pushes the V-shaped swing arm 14 through the discharging opening and closing control hydraulic cylinder 4 and the first connecting pin shaft 15, and the V-shaped swing arm 14 swings anticlockwise around the upper right centering pin shaft 9, so that the upper centering roller 5 approaches to the rolling center line 13;
while the W-shaped swing arm 16 swings anticlockwise, a fourth connecting pin shaft 19 at the right lower part of the W-shaped swing arm 16 enables the Y-shaped swing arm 20 to rotate anticlockwise around the left lower centering pin shaft 11 through a first connecting rod 25 and a fifth connecting pin shaft 21, and enables the lower centering roller 7 to approach the rolling center line 13;
in the process of counterclockwise rotation of the Y-shaped swing arm 20, the left lower end of the Y-shaped swing arm 20 pushes the inverted V-shaped swing arm 23 through the sixth connecting pin shaft 22 and the second connecting rod 26, and the inverted V-shaped swing arm 23 also counterclockwise rotates around the left upper centering pin shaft 12, so that the left centering roller 8 approaches to the rolling center line 13;
thereby realizing that the upper centering roller 5, the right centering roller 6, the lower centering roller 7 and the left centering roller 8 synchronously approach to the rolling center line 13, and achieving the purpose of reducing the centering opening degree; the four special-shaped swing arms swing around the respective hinge pins to realize the adjustment of the opening degree, and in the adjustment process, the four centering rollers are always positioned on the circumference of the concentric circle.
If the centered steel pipe 2 is thick, when the centering opening degree needs to be increased:
the electric control hydraulic cylinder 3 for adjusting the opening degree is controlled to enable the output shaft of the electric control hydraulic cylinder to retract rightwards, the retracted output shaft pulls the W-shaped swing arm 16 through the second connecting pin shaft 17, the W-shaped swing arm 16 swings clockwise around the right lower centering pin shaft 10, and the right centering roller 6 is far away from the rolling center line 13;
when the W-shaped swing arm 16 swings clockwise, the W-shaped swing arm 16 controls the hydraulic cylinder 4 and the first connecting pin shaft 15 to open and close through a discharge hole, the V-shaped swing arm 14 is pulled, and the V-shaped swing arm 14 swings clockwise around the upper right centering pin shaft 9, so that the upper centering roller 5 is far away from the rolling center line 13;
while the W-shaped swing arm 16 swings clockwise, a fourth connecting pin shaft 19 at the right lower part of the W-shaped swing arm 16 enables the Y-shaped swing arm 20 to rotate clockwise around the left lower centering pin shaft 11 through a first connecting rod 25 and a fifth connecting pin shaft 21, and enables the lower centering roller 7 to be far away from the rolling center line 13;
in the clockwise rotation process of the Y-shaped swing arm 20, the left lower end of the Y-shaped swing arm 20 pulls the inverted V-shaped swing arm 23 through the sixth connecting pin shaft 22 and the second connecting rod 26, and the inverted V-shaped swing arm 23 also rotates clockwise around the left upper centering pin shaft 12, so that the left centering roller 8 is far away from the rolling center line 13;
thereby realizing that the upper centering roller 5, the right centering roller 6, the lower centering roller 7 and the left centering roller 8 are synchronously far away from the rolling center line 13, and achieving the purpose of adjusting the opening degree.
If the centered steel pipe 2 is moved out of the rolling center line:
the hydraulic cylinder 4 is controlled by controlling the opening and closing of the discharge hole, so that the extending shaft of the hydraulic cylinder drives the V-shaped swing arm 14 to swing through the first connecting pin shaft 15, the V-shaped swing arm 14 swings clockwise around the upper right centering pin shaft 9, the centering roller 5 is separated from the position right above the rolling center line 13, and an upward channel is provided for the removal of the centered steel pipe 2; the hydraulic cylinder 4 for controlling the opening and closing of the discharge hole plays a role of a connecting rod, and can also independently control the swing of the V-shaped swing arm 14 to realize the removal of the centering roller 5 above the rolling center line 13, so that the centered steel pipe 2 can be moved upwards.
Claims (2)
1. The four-roller centering roller device comprises a frame (1), a centering steel tube (2), an electric control hydraulic cylinder (3) for opening degree adjustment, a discharge port opening and closing control hydraulic cylinder (4), an upper centering roller (5), a right centering roller (6), a lower centering roller (7) and a left centering roller (8), wherein a rolling center line (13) is arranged in the frame (1), and the four-roller centering roller device is characterized in that an upper right centering pin (9) is arranged on the frame (1) above the rolling center line (13), a lower right centering pin (10) is arranged on the frame (1) below the rolling center line (13), a lower left centering pin (11) is arranged on the frame (1) below the left of the rolling center line (13), and an upper left centering pin (12) is arranged on the frame (1) above the left of the rolling center line (13); the upper right centering pin shaft (9) is hinged with a V-shaped swing arm (14), the middle part of the V-shaped swing arm (14) is hinged on the upper right centering pin shaft (9), the left end of the V-shaped swing arm (14) is provided with an upper centering roller (5), and the right end of the V-shaped swing arm (14) is provided with a first connecting pin shaft (15); a W-shaped swing arm (16) is hinged to the right lower centering pin shaft (10), the left lower end of the W-shaped swing arm (16) is hinged to the right lower centering pin shaft (10), a right centering roller (6) is arranged at the left upper end of the W-shaped swing arm (16), a second connecting pin shaft (17) is arranged at the top end of the middle part of the W-shaped swing arm (16), a third connecting pin shaft (18) is arranged at the right upper end of the W-shaped swing arm (16), and a fourth connecting pin shaft (19) is arranged at the right lower end of the W-shaped swing arm (16); a Y-shaped swing arm (20) is hinged on the left lower centering pin shaft (11), the middle part of the Y-shaped swing arm (20) is hinged on the left lower centering pin shaft (11), a lower centering roller (7) is arranged at the right upper end of the Y-shaped swing arm (20), a fifth connecting pin shaft (21) is arranged at the lower end of the Y-shaped swing arm (20), and a sixth connecting pin shaft (22) is arranged at the left upper end of the Y-shaped swing arm (20); an inverted V-shaped swing arm (23) is hinged on the left upper centering pin shaft (12), the middle part of the inverted V-shaped swing arm (23) is hinged on the left upper centering pin shaft (12), the right end of the inverted V-shaped swing arm (23) is provided with a left centering roller (8), and the left end of the inverted V-shaped swing arm (23) is provided with a seventh connecting pin shaft (24); a discharge port opening and closing control hydraulic cylinder (4) is connected between the first connecting pin shaft (15) and the third connecting pin shaft (18), an opening degree adjusting electric control hydraulic cylinder (3) is fixedly arranged in the middle of the right side of the frame (1), the top end of an output shaft of the opening degree adjusting electric control hydraulic cylinder (3) is hinged with the second connecting pin shaft (17), a first connecting rod (25) is connected between the fourth connecting pin shaft (19) and the fifth connecting pin shaft (21), and a second connecting rod (26) is connected between the sixth connecting pin shaft (22) and the seventh connecting pin shaft (24); the upper centering roller (5), the right centering roller (6), the lower centering roller (7) and the left centering roller (8) are arranged on the circumference of the same circle, and the center of the circle is overlapped with the rolling center line (13).
2. The four-roll centering roller device according to claim 1, wherein after the upper right centering pin (9), the first connecting pin (15), the third connecting pin (18) and the lower right centering pin (10) are sequentially connected, a right four-bar parallelogram is formed, and the upper right centering pin (9), the first connecting pin (15), the third connecting pin (18) and the lower right centering pin (10) are four vertexes of the right four-bar parallelogram; after a right lower centering pin shaft (10), a fourth connecting pin shaft (19), a fifth connecting pin shaft (21) and a left lower centering pin shaft (11) are sequentially connected, a lower four-bar parallelogram is formed, and the right lower centering pin shaft (10), the fourth connecting pin shaft (19), the fifth connecting pin shaft (21) and the left lower centering pin shaft (11) are four vertexes of the lower four-bar parallelogram; after the left lower centering pin shaft (11), the left upper centering pin shaft (12), the seventh connecting pin shaft (24) and the sixth connecting pin shaft (22) are sequentially connected, a left four-bar parallelogram is formed, and the left lower centering pin shaft (11), the left upper centering pin shaft (12), the seventh connecting pin shaft (24) and the sixth connecting pin shaft (22) are four vertexes of the left four-bar parallelogram.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223318908.6U CN219188141U (en) | 2022-12-12 | 2022-12-12 | Four-roller centering roller device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223318908.6U CN219188141U (en) | 2022-12-12 | 2022-12-12 | Four-roller centering roller device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219188141U true CN219188141U (en) | 2023-06-16 |
Family
ID=86720817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223318908.6U Active CN219188141U (en) | 2022-12-12 | 2022-12-12 | Four-roller centering roller device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219188141U (en) |
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2022
- 2022-12-12 CN CN202223318908.6U patent/CN219188141U/en active Active
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