阅读说明：本技术 一种立式小辊径工作辊辗环装置 (Vertical small-roll-diameter working roll ring rolling device ) 是由 何文武 王金亮 李荣斌 陈慧琴 李飞 孙述利 田继红 贾晓斌 刘建生 郭会光 于 2019-09-20 设计创作，主要内容包括：一种立式小辊径工作辊辗环装置,属于环件轧制设备技术领域,解决工作辊与待辗环件的接触面积大、所需设备轧制力大的技术问题。本装置包括轧辊机架、上轧辊辊系和下轧辊辊系,轧辊机架包括主机架和副机架,主机架和副机架相对设置,主机架内和副机架中均设置有上轧辊滑块,主机架中上轧辊滑块的下方设置为下轧辊滑块,副机架中上轧辊滑块的下方设置为下轧辊固定座,液压缸驱动上轧辊滑块沿导柱上下滑动；上轧辊辊系包括上支撑辊、上传动辊和上工作辊,下轧辊辊系与上轧辊辊系关于轧制辊缝中心线对称设置,待轧环件套装在下轧辊辊系上。本发明中小辊径工作辊使得局部变形区变小,多辊系传动系统证工作辊的轧制压力和转矩传动,延长轧辊使用寿命。(The utility model provides a vertical little roll diameter work roll ring rolling device, belongs to ring piece rolling equipment technical field, solves the work roll and treats that the area of contact of ring rolling spare is big, required equipment rolling force is big technical problem. The device comprises a roller frame, an upper roller system and a lower roller system, wherein the roller frame comprises a main frame and an auxiliary frame which are arranged oppositely, upper roller sliders are arranged in the main frame and the auxiliary frame, a lower roller slider is arranged below the upper roller slider in the main frame, a lower roller fixing seat is arranged below the upper roller slider in the auxiliary frame, and a hydraulic cylinder drives the upper roller slider to slide up and down along a guide pillar; the upper roll system comprises an upper supporting roll, an upper transmission roll and an upper working roll, the lower roll system and the upper roll system are symmetrically arranged about a rolling roll gap central line, and the ring piece to be rolled is sleeved on the lower roll system. The small-roll-diameter working roll of the invention enables the local deformation area to be reduced, and the multi-roll-system transmission system ensures the rolling pressure and torque transmission of the working roll, thereby prolonging the service life of the roll.)

1. The utility model provides a vertical little roll diameter work roll ring rolling device, it includes roll rack, top roll roller system and bottom roll roller system, the roll rack includes main frame (3) and auxiliary machine frame (1), its characterized in that: the roller mill is characterized in that the main frame (3) and the auxiliary frame (1) are arranged oppositely, the top of the main frame (3) is fixedly connected with the top of the auxiliary frame (1) through a frame cross beam (2), the upper part in the main frame (3) and the upper part in the auxiliary frame (1) are both provided with an upper roller sliding block (5), a lower roller sliding block (21) is arranged below the upper roller sliding block (5) in the main frame (3), and a lower roller fixing seat (12) is arranged below the upper roller sliding block (5) in the auxiliary frame (1); a hydraulic cylinder (4) is respectively arranged above the main frame (3) and the auxiliary frame (1), the hydraulic cylinder (4) is vertically arranged downwards, the end part of a piston rod arranged on the hydraulic cylinder (4) penetrates through the corresponding main frame (3) and the auxiliary frame (1) and is respectively fixedly connected with an upper roller sliding block (5), guide holes are respectively arranged at four corners of the upper roller sliding block (5), guide pillars are respectively arranged on the main frame (3) and the auxiliary frame (1) corresponding to the positions of the guide holes and penetrate through the guide holes, and the hydraulic cylinder (4) drives the upper roller sliding block (5) to slide up and down along the guide pillars;

the two ends of the upper roller system are respectively arranged on roller sliders (5) arranged on the main frame (3) and the auxiliary frame (1), the upper roller system comprises upper supporting rollers (6), upper driving rollers (7) and upper working rollers (8), the two upper driving rollers (7) are symmetrically arranged below the upper supporting rollers (6), and the two upper driving rollers (7) are respectively circumscribed with the upper supporting rollers (6); the upper working rolls (8) are arranged below the two upper transmission rolls (7), and the upper working rolls (8) are externally tangent to the two upper supporting rolls (6);

one end of the lower roller system is arranged on the lower roller fixing seat (12), the other end of the lower roller system is arranged on the lower roller sliding block (21), the lower roller system comprises a lower supporting roller (26), a lower driving roller (25) and a lower working roller (9), the lower roller system and the upper roller system are symmetrically arranged relative to the central line of a rolling gap, and a ring piece (24) to be rolled is sleeved on the lower roller system;

the diameters of the upper working roll (8) and the lower working roll (9) are 20-200 mm, and the diameters of the working rolls, the transmission rolls and the supporting rolls in the upper roll system and the lower roll system are 1:1.2 ~ 1.5.5: 2 ~ 3;

a transverse sliding rail (22) is arranged at the lower part penetrating through the main rack (3), a hydraulic transverse moving driving device (23) is arranged at one end of the transverse sliding rail (22), a piston rod arranged on the hydraulic transverse moving driving device (23) is fixedly connected with the lower roller sliding block (21), and the hydraulic transverse moving driving device (23) drives the lower roller sliding block (21) to horizontally slide along the transverse sliding rail (22).

2. The vertical small-roll-diameter working roll ring rolling device according to claim 1, characterized in that: the hydraulic cylinders (4) arranged above the main frame (3) and the hydraulic cylinders (4) arranged above the auxiliary frame (1) are respectively connected with the controller, the two hydraulic cylinders (4) synchronously execute the instruction of the controller, and the hydraulic cylinders (4) drive the upper roller slide block (5) arranged in the main frame (3) and the upper roller slide block (5) arranged in the auxiliary frame (1) to synchronously move up and down.

3. The vertical small-roll-diameter working roll ring rolling device according to claim 1, characterized in that: the upper part of the main frame (3) positioned on the opposite surface of the main frame (3) and the auxiliary frame (1) is provided with a guide device, the guide device comprises a hydraulic controller and a guide roller (14), the hydraulic controller comprises guide oil cylinders (13) and a displacement sensor, the two guide oil cylinders (13) are respectively hinged to the front side and the rear side of the upper part of the main frame (3), the two guide oil cylinders (13) are symmetrically arranged about the longitudinal axis of the roller frame, the tail ends of piston rods of the guide oil cylinders (13) are fixedly connected with the guide roller (14) through crank connecting rods, and the guide roller (14) compresses the front side and the rear side of a ring piece to be rolled (24); the displacement sensor is arranged on a piston rod of the guide oil cylinder (13), and measures the diameter of the ring piece to be rolled by detecting the elongation of the piston rod of the guide oil cylinder (13).

4. The vertical small-roll-diameter working roll ring rolling device according to claim 1, characterized in that: and the rollers in the upper roller system and the rollers in the lower roller system are arranged in a kite shape.

5. The vertical small-roll-diameter working roll ring rolling device according to claim 1, characterized in that: the upper working roll 8 is set as a driving working roll, and the lower working roll (9) is set as a driven working roll.

6. The vertical small-roll-diameter working roll ring rolling device according to claim 1, characterized in that: go up the power input end and the transmission system connection of roll system, transmission system includes driven shaft (15), shaft coupling (16), universal spindle (17), driving shaft (18), reduction gear (19) and motor (20), the power take off end of motor (20) is connected with the power input end of reduction gear (19), and the power take off end and the driving shaft (18) of reduction gear (19) are connected, and driving shaft (18) are connected with the one end of universal spindle (17), and the other end of universal spindle (17) passes through shaft coupling (16) to be connected with driven shaft (15), and driven shaft (15) are connected with last supporting roll (6).

7. The vertical small-roll-diameter working roll ring rolling device according to claim 1, characterized in that: and upper roll bearings (10) are arranged between the two ends of the rolls in the upper roll system and the upper roll sliding blocks (5), and lower roll bearings (11) are arranged between the two ends of the rolls in the lower roll system and the corresponding lower roll sliding blocks (21) or lower roll fixing seats (12).

Technical Field

The invention belongs to the technical field of ring rolling equipment, and particularly relates to a ring rolling device of a vertical small-roll-diameter working roll.

Background

The rolling of the ring piece (also called ring rolling, reaming and ring rolling) is a plastic processing technology which makes the ring piece generate continuous local plastic deformation by the action of a driving roller and a core roller of a ring rolling machine (also called ring rolling machine, ring rolling machine and reaming machine) so as to realize wall thickness reduction, diameter enlargement and section profile forming.

In the rolling process, two working rolls are in contact with the inner surface and the outer surface of the ring to be rolled, the larger the contact area is, the better the ring forging penetration is, but the contact area is too large, the required rolling force is also larger, the working rolls are easy to break, the forming quality of the ring is poor or the ring is easy to scrap, and how to improve the forming quality of the ring and simultaneously consider the rolling force of equipment and the service life of the working rolls becomes a problem to be solved urgently.

Disclosure of Invention

The invention aims to overcome the defects in the prior art, solve the technical problems of large contact area between a working roll and a ring piece to be rolled, large rolling force of required equipment and poor forming quality of the ring piece, and provide a vertical small-roll-diameter working roll ring rolling device.

The invention is realized by the following technical scheme.

The utility model provides a vertical little roll diameter work roll ring rolling device, it includes roll stand, upper roll roller system and lower roll roller system, the roll stand includes main frame and auxiliary frame, wherein: the roller mill comprises a main frame, an auxiliary frame, a lower roller slide block, a lower roller fixing seat and a lower roller fixing seat, wherein the main frame and the auxiliary frame are arranged oppositely, the top of the main frame and the top of the auxiliary frame are fixedly connected through a frame cross beam, the upper part in the main frame and the upper part in the auxiliary frame are both provided with the upper roller slide block, the lower part of the upper roller slide block in the main frame is provided with the lower roller slide block, and the lower part of; hydraulic cylinders are respectively arranged above the main frame and the auxiliary frame, the hydraulic cylinders are vertically and downwardly arranged, the end parts of piston rods arranged on the hydraulic cylinders penetrate through the corresponding main frame and the auxiliary frame and are respectively fixedly connected with the upper roller sliding block, guide holes are respectively arranged at the four corners of the upper roller sliding block, guide pillars are respectively arranged on the main frame and the auxiliary frame corresponding to the positions of the guide holes, the guide pillars penetrate through the guide holes, and the hydraulic cylinders drive the upper roller sliding block to slide up and down along the guide pillars;

the two ends of the upper roller system are respectively arranged on roller sliders arranged on the main frame and the auxiliary frame, the upper roller system comprises upper supporting rollers, upper driving rollers and upper working rollers, the two upper driving rollers are symmetrically arranged below the upper supporting rollers, and the two upper driving rollers are respectively circumscribed with the upper supporting rollers; the upper working roll is arranged below the two upper transmission rolls and is externally tangent to the two upper supporting rolls;

one end of the lower roller system is arranged on the lower roller fixing seat, the other end of the lower roller system is arranged on the lower roller sliding block, the lower roller system comprises a lower supporting roller, a lower driving roller and a lower working roller, the lower roller system and the upper roller system are symmetrically arranged around a central line of a rolling gap, and a ring piece to be rolled is sleeved on the lower roller system;

the diameters of the upper working roll and the lower working roll are 20-200 mm, and the diameter ratio of the working roll, the transmission roll and the supporting roll in the upper roll system and the lower roll system is 1:1.2 ~ 1.5.5: 2 ~ 3;

a transverse sliding rail is arranged at the lower part of the main rack, a hydraulic transverse moving driving device is arranged at one end of the transverse sliding rail, a piston rod arranged on the hydraulic transverse moving driving device is fixedly connected with the lower roller sliding block, and the hydraulic transverse moving driving device drives the lower roller sliding block to horizontally slide along the transverse sliding rail.

Furthermore, a hydraulic cylinder arranged above the main frame and a hydraulic cylinder arranged above the auxiliary frame are respectively connected with the controller, the two hydraulic cylinders synchronously execute the instruction of the controller, and the hydraulic cylinders drive an upper roller slide block arranged in the main frame and an upper roller slide block arranged in the auxiliary frame to synchronously move up and down.

Furthermore, a guide device is arranged at the upper part of the main frame, which is positioned on the opposite surface of the main frame and the auxiliary frame, and comprises a hydraulic controller and a guide roller wheel, the hydraulic controller comprises a guide oil cylinder and a displacement sensor, the two guide oil cylinders are respectively hinged to the front side and the rear side of the upper part of the main frame, the two guide oil cylinders are symmetrically arranged about the longitudinal axis of the roller frame, the tail end of a piston rod of each guide oil cylinder is fixedly connected with the guide roller wheel through a crank connecting rod, and the guide roller wheel tightly presses the front side and the rear side of; the displacement sensor is arranged on a piston rod of the guide oil cylinder, and measures the diameter of the ring piece to be rolled by detecting the extension amount of the piston rod of the guide oil cylinder.

Furthermore, the rollers in the upper roller system and the rollers in the lower roller system are arranged in a kite shape.

Furthermore, the upper working roll is set as a driving working roll, and the lower working roll is set as a driven working roll.

Further, the power input end of the upper roll system is connected with a transmission system, the transmission system comprises a driven shaft, a coupler, a universal joint shaft, a driving shaft, a speed reducer and a motor, the power output end of the motor is connected with the power input end of the speed reducer, the power output end of the speed reducer is connected with the driving shaft, the driving shaft is connected with one end of the universal joint shaft, the other end of the universal joint shaft is connected with the driven shaft through the coupler, and the driven shaft is connected with the upper supporting roll.

Furthermore, upper roll bearings are arranged between the two ends of the roller in the upper roller system and the upper roller slide blocks, and lower roll bearings are arranged between the two ends of the roller in the lower roller system and the corresponding lower roller slide blocks or the lower roller fixing seats.

The invention has the following beneficial effects:

the invention provides a ring rolling device of a vertical small-roll-diameter working roll, which adopts the small-roll-diameter working roll to reduce the contact area of the working roll and a ring piece to be rolled (rolled), so that a local deformation area is reduced; a multi-roll system transmission system comprising a supporting roll, a transmission roll and a working roll is adopted to ensure the transmission of the rolling pressure and the torque of the working roll; meanwhile, the double-frame structure is adopted, so that the roller is changed from a cantilever beam stress structure with one fixed end into a simply supported beam stress structure with two fixed ends, the stress mode of the roller body of the working roller is changed, and the roller body is not easy to damage and break.

Drawings

FIG. 1 is a schematic sectional front view of the present invention;

FIG. 2 is a side cross-sectional structural view of the present invention;

FIG. 3 is a schematic diagram of the operation of the roll system of the present invention.

In the figure, 1 is an auxiliary frame, 2 is a frame beam, 3 is a main frame, 4 is a hydraulic cylinder, 5 is an upper roll slide block, 6 is an upper support roll, 7 is an upper transmission roll, 8 is an upper working roll, 9 is a lower working roll, 10 is an upper roll bearing, 11 is a lower roll bearing, 12 is an auxiliary frame lower roll base, 13 is a guiding hydraulic controller, 14 is a guiding roll wheel, 15 is a driven shaft, 16 is a coupler, 17 is a universal joint shaft, 18 is a driving shaft, 19 is a speed reducer, 20 is a motor, 21 is a main frame lower roll slide block, 22 is a transverse moving slide rail, 23 is a hydraulic transverse moving driving device, 24 is a ring piece to be rolled, 25 is a lower transmission roll, and 26 is a lower support roll.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings and examples, which are intended to represent only some, but not all, embodiments of the invention.

As shown in fig. 1 and 2, the vertical small-roll-diameter work roll ring rolling device comprises a roll stand, an upper roll system and a lower roll system, wherein the roll stand comprises a main stand 3 and an auxiliary stand 1, wherein: the main frame 3 and the auxiliary frame 1 are oppositely arranged, the top of the main frame 3 and the top of the auxiliary frame 1 are fixedly connected through a frame beam 2, the upper part in the main frame 3 and the upper part in the auxiliary frame 1 are both provided with an upper roller slide block 5, a lower roller slide block 21 is arranged below the upper roller slide block 5 in the main frame 3, and a lower roller fixing seat 12 is arranged below the upper roller slide block 5 in the auxiliary frame 1; a hydraulic cylinder 4 is respectively arranged above the main frame 3 and the auxiliary frame 1, the hydraulic cylinder 4 is vertically arranged downwards, the end part of a piston rod arranged on the hydraulic cylinder 4 penetrates through the corresponding main frame 3 and the auxiliary frame 1 and is respectively fixedly connected with an upper roller slide block 5, guide holes are respectively arranged at four corners of the upper roller slide block 5, guide pillars are respectively arranged on the main frame 3 and the auxiliary frame 1 corresponding to the positions of the guide holes, the guide pillars penetrate through the guide holes, and the hydraulic cylinder 4 drives the upper roller slide block 5 to slide up and down along the guide pillars;

two ends of the upper roller system are respectively arranged on roller sliders 5 arranged on the main frame 3 and the auxiliary frame 1, the upper roller system comprises an upper supporting roller 6, upper driving rollers 7 and upper working rollers 8, the two upper driving rollers 7 are symmetrically arranged below the upper supporting roller 6, and the two upper driving rollers 7 are respectively circumscribed with the upper supporting roller 6; the upper working rolls 8 are arranged below the two upper transmission rolls 7, and the upper working rolls 8 are circumscribed with the two upper supporting rolls 6;

one end of the lower roller system is arranged on the lower roller fixing seat 12, the other end of the lower roller system is arranged on the lower roller slide block 21, the lower roller system comprises a lower supporting roller 26, a lower transmission roller 25 and a lower working roller 9, the lower roller system and the upper roller system are symmetrically arranged around the central line of a rolling gap, and a ring piece to be rolled 24 is sleeved on the lower roller system;

the diameters of the upper working roll 8 and the lower working roll 9 are 20-200 mm, and the diameters of the working rolls, the transmission rolls and the supporting rolls in the upper roll system and the lower roll system are 1:1.2 ~ 1.5:2 ~ 3;

a transverse sliding rail 22 is arranged through the lower part of the main frame 3, one end of the transverse sliding rail 22 is provided with a hydraulic transverse moving driving device 23, a piston rod arranged on the hydraulic transverse moving driving device 23 is fixedly connected with the lower roller slide block 21, and the hydraulic transverse moving driving device 23 drives the lower roller slide block 21 to horizontally slide along the transverse sliding rail 22.

Further, a hydraulic cylinder 4 arranged above the main frame 3 and a hydraulic cylinder 4 arranged above the auxiliary frame 1 are respectively connected with a controller, the two hydraulic cylinders 4 synchronously execute instructions of the controller, and the hydraulic cylinders 4 drive an upper roller slide block 5 arranged in the main frame 3 and an upper roller slide block 5 arranged in the auxiliary frame 1 to synchronously move up and down.

Further, a guide device is arranged at the upper part of the main frame 3, which is positioned on the opposite surface of the main frame 3 and the auxiliary frame 1, and comprises a hydraulic controller and guide rollers 14, the hydraulic controller comprises guide oil cylinders 13 and a displacement sensor, the two guide oil cylinders 13 are respectively hinged to the front side and the rear side of the upper part of the main frame 3, the two guide oil cylinders 13 are symmetrically arranged about the longitudinal axis of the rolling frame, the tail ends of piston rods of the guide oil cylinders 13 are fixedly connected with the guide rollers 14 through crank connecting rods, and the guide rollers 14 tightly press the front side and the rear side of the ring piece to be rolled 24; the displacement sensor is arranged on a piston rod of the guide oil cylinder 13, and measures the diameter of the ring piece to be rolled by detecting the extension amount of the piston rod of the guide oil cylinder 13.

Furthermore, the rollers in the upper roller system and the rollers in the lower roller system are arranged in a kite shape.

Further, the upper working roll 8 is set as a driving working roll, and the lower working roll 9 is set as a driven working roll.

Further, the power input end of the upper roll system is connected with a transmission system, the transmission system comprises a driven shaft 15, a coupler 16, a universal joint shaft 17, a driving shaft 18, a speed reducer 19 and a motor 20, the power output end of the motor 20 is connected with the power input end of the speed reducer 19, the power output end of the speed reducer 19 is connected with the driving shaft 18, the driving shaft 18 is connected with one end of the universal joint shaft 17, the other end of the universal joint shaft 17 is connected with the driven shaft 15 through the coupler 16, and the driven shaft 15 is connected with the upper support roll 6.

Further, upper roll bearings 10 are arranged between two ends of a roll in the upper roll system and the upper roll slide blocks 5, and lower roll bearings 11 are arranged between two ends of a roll in the lower roll system and the corresponding lower roll slide blocks 21 or the lower roll fixing seats 12.

The hydraulic cylinders 4 and the guide posts which are symmetrically arranged on the tops of the main frame 3 and the auxiliary frame 1 by the longitudinal symmetry axis of the frames form a guide device of an upper roller system, the two hydraulic cylinders 4 execute the instruction of a controller, so that upper roller sliders 5 of the two frames move up and down synchronously, and the displacement sensor adjusts the rolling reduction of an upper working roller through the upper roller sliders.

The lower roll sliding block 21 in the main frame 3 and the lower roll base 12 in the auxiliary frame 3 are both provided with a lower roll bearing 11, a lower roll system is arranged in an inner hole of the lower roll bearing 11, under the action of a hydraulic transverse moving device 23, the lower roll sliding block 21, the lower roll system and the lower roll bearing are transversely moved out along a transverse sliding rail 22 in a connection state, a ring piece to be rolled 24 is sleeved on the lower roll system, and the lower roll sliding block and the lower roll system are transversely moved into a rolling station of the lower roll base 12 of the auxiliary frame 1, so that the lower roll bearing 11 of the auxiliary frame 1 is locked and matched with the lower roll base 12.

The upper roller slide block 5 is provided with an upper roller bearing 10, an upper roller system is arranged in an inner hole of the corresponding upper roller bearing, the rotational stability of the upper roller support roller 6 which rotates under the driving of a transmission system consisting of a motor 20, a speed reducer 19, a driving shaft 18, a coupling 16, a universal coupling 17 and a driven shaft 5 is improved, and the processing deviation is reduced.

The lower roll pedestal 12 and the lower roll slider 21 are provided with a lower roll bearing 11, the lower roll system is arranged in an inner hole corresponding to the lower roll bearing 11, and the lower roll bearing 11 supports the lower roll system, so that the passive transmission of the lower roll system is more stable, and the tail flick is reduced.

The double-frame structure is adopted, so that the roller is changed from a cantilever beam stress structure with one fixed end into a simply supported beam stress structure with two fixed ends, the stress mode of the roller body of the working roller is changed, and the roller body is not easy to damage and break.

As shown in the working principle diagram of the roll system shown in fig. 3, during working, the upper support roll 6 is driven by the transmission system to rotate, the upper transmission roll 7 and the upper working roll 8 are driven to rotate under the action of friction force, meanwhile, the upper roll slide block 5 is driven by the guide device to press down the upper working roll 8, the ring member 24 to be rolled is simultaneously acted by the downward pressure and the rotation moment of the upper working roll 8, and the ring member 24 to be rolled rotates and is locally deformed. Meanwhile, each roller of the lower roller system passively rotates and supports the ring piece 24 to be rolled.

In order to accurately measure the diameter of the ring, during rolling, in a pair of guide devices symmetrically arranged on a rolling mill frame along a longitudinal axis, a hydraulic controller 13 is connected with displacement sensors, the elongation of piston rods in two guide oil cylinders is respectively detected through the two displacement sensors, the rotating angle of a crank connecting rod is calculated according to the length and the curvature of the crank connecting rod connected with each guide oil cylinder, the horizontal displacement distance of a guide roller 14 connected with the crank connecting rod is further calculated, and the diameter of the ring is obtained according to the horizontal displacement of the two guide rollers 14.

After the ring piece 24 is machined, under the action of the hydraulic transverse moving driving device 23, the lower roller slide block 21, the lower roller system and the lower roller bearing are transversely moved out along the transverse slide rail 22 in a connected state, the ring piece is dismounted, and one-time machining is completed.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and the technical solutions of the embodiment are equally replaced by one or more technical parameters to form a new technical solution, which is also within the scope of the present invention; it will be apparent to those skilled in the art that various modifications and variations can be made in the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.