CN112222195B - High-speed three-roller cold rolling unit - Google Patents
High-speed three-roller cold rolling unit Download PDFInfo
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- CN112222195B CN112222195B CN202010990873.7A CN202010990873A CN112222195B CN 112222195 B CN112222195 B CN 112222195B CN 202010990873 A CN202010990873 A CN 202010990873A CN 112222195 B CN112222195 B CN 112222195B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
- B21B27/02—Shape or construction of rolls
- B21B27/024—Rolls for bars, rods, rounds, tubes, wire or the like
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
- B21B31/16—Adjusting or positioning rolls
- B21B31/20—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis
- B21B31/22—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis mechanically, e.g. by thrust blocks, inserts for removal
- B21B31/24—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis mechanically, e.g. by thrust blocks, inserts for removal by screws
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B35/00—Drives for metal-rolling mills, e.g. hydraulic drives
- B21B35/12—Toothed-wheel gearings specially adapted for metal-rolling mills; Housings or mountings therefor
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Abstract
The invention belongs to the technical field of metal seamless pipe rolling, and particularly relates to a high-speed three-roller cold rolling unit. The rolling mill comprises a power mechanism, a connecting rod mechanism and a rolling mill body, wherein a first transmission shaft and a second transmission shaft are arranged between an upper mounting plate and a lower mounting plate of a reduction gearbox, the upper end of the second transmission shaft extends upwards to penetrate through the upper mounting plate of the reduction gearbox to be provided with a first disc, a first fixing shaft is eccentrically arranged on the first disc, a planetary gear is arranged on the upper part of the first fixing shaft, the eccentric distance of the first fixing shaft is the same as the radius of the planetary gear, the planetary gear is meshed with an inner gear, the upper surface of the planetary gear is fixedly connected with a second disc, a second fixing shaft is eccentrically arranged on the second disc, and a connecting block is arranged on the second fixing shaft through a bearing; the power mechanism adopts a planetary transmission mode, has high-speed and stable rolling effect, and can double the speed of related products.
Description
Technical Field
The invention belongs to the technical field of metal seamless pipe rolling, and particularly relates to a high-speed three-roller cold rolling unit.
Background
At present, the domestic main cold rolling equipment is a two-roller cold rolling mill in structural form, and can realize the preparation of the metal seamless pipes. The two-roller cold pilger mill is a roller with a pair of tapered rolling grooves with continuously changed cross sections, and can roll metal pipes with large deformation, but the frame of the two-roller cold pilger mill belongs to a split structure, so that the frame deforms; the roller is composed of an upper roller and a lower roller, so that the roller is caused to flex in the rolling process, the rigidity is insufficient, the rolling mill equipment can lose fatigue and lose efficacy after being used for a long time, the equipment is poor in stability, and the bounce is serious, so that the phenomena of poor pipe precision, uneven wall thickness and the like in the rolling process are frequent, the lower rolling precision can be obtained, the surface quality and the roundness of a finished pipe are poor, the defects of scratching, bamboo joints, rolling cracks and the like can be caused even more seriously, the production efficiency and the product quality of an enterprise are influenced, and the problems of frequent equipment maintenance, high production cost and the like exist. The three-roller cold pilger mill is a groove roller with three unchanged cross sections, can realize the rolling of high-precision metal seamless pipes, but the roller of the three-roller cold pilger mill rides on the sliding groove and belongs to passive transmission, so that the relative sliding phenomenon occurs between the sliding groove and the roller, the abrasion between the roller neck and the working surface of the sliding groove is serious, the production process needs to be frequently replaced, therefore, the three-roller cold pilger mill technology is mostly applied to the preparation of small-deformation metal seamless pipe products at present, and a plurality of rolling modes are adopted, so that the manufacturing cost of the products is sharply increased. Therefore, in order to overcome the problems, a three-roll cold rolling mill is urgently needed, which not only can realize the metal deformation effect with large deformation amount, but also can realize high-precision product quality, so as to meet the production requirements of the market on metal seamless pipes.
Disclosure of Invention
The invention provides a high-speed three-roller cold rolling unit aiming at the problems.
In order to achieve the purpose, the invention adopts the following technical scheme:
a high-speed three-roller cold rolling unit comprises a power mechanism, a connecting rod mechanism and a rolling mill main body;
the power mechanism comprises a power device and a reduction box body, an upper reduction box mounting plate and a lower reduction box mounting plate are arranged in the middle of the reduction box body, a first transmission shaft and a second transmission shaft are arranged between the upper reduction box mounting plate and the lower reduction box mounting plate, a first driving gear and a first driven gear which are meshed with each other are respectively arranged on the first transmission shaft and the second transmission shaft, the lower end of the first transmission shaft extends downwards to penetrate through the lower reduction box mounting plate to be connected with an output shaft of the power device, the upper end of the second transmission shaft extends upwards to penetrate through the upper reduction box mounting plate to be provided with a first disc, a first fixing shaft is eccentrically arranged on the first disc, a planetary gear is arranged on the upper portion of the first fixing shaft, the eccentric distance of the first fixing shaft is identical to the radius of the planetary gear, and the second fixing shaft is guaranteed to do linear reciprocating motion in the rolling line direction, the planetary gear is engaged and connected with an inner gear, the radius of the inner gear is the same as the diameter of the planetary gear, the inner gear is fixedly arranged on a mounting plate on the reduction gearbox, the upper surface of the planetary gear is fixedly connected with a second disc, bearings are arranged between the second disc and a first fixed shaft and between the planetary gear and the first fixed shaft, the second disc is eccentrically provided with a second fixed shaft, the eccentric distance of the second fixed shaft and the diameter of the planetary gear jointly determine the stroke length of the rolling mill body, the second fixed shaft is in key connection with a mounting block, the mounting block is fixedly connected with a first balancing weight so as to eliminate the inertial impact at the reciprocating motion limit position of the rolling mill body, and the first balancing weight and the first fixed shaft are always positioned on the same side of the axis of the second transmission shaft, a connecting block is further mounted on the second fixing shaft through a bearing;
the connecting rod mechanism comprises a ' 20866a ' shaped rocking rod, two long connecting rods which are bilaterally symmetrical, two short connecting rods which are bilaterally symmetrical and a frame adjusting connecting rod, wherein two end parts below the ' 2086666shaped rocking rod are hinged to one side of a feeding port of the base;
the rolling mill main body comprises a base, a rack and a fixing frame, wherein stroke grooves are formed in the left side and the right side of the base, a first rack and a second rack are respectively arranged at the upper end and the lower end of each stroke groove, mounting seats corresponding to the stroke grooves are fixedly arranged on the left side and the right side of the rack, a first rolling gear and a second rolling gear which are meshed with each other are respectively arranged on the front side and the rear side of each mounting seat, the first rolling gear and the second rolling gear are respectively meshed with the first rack and the second rack, a hinged part is arranged at the upper end of the rack and used for connecting a rack adjusting connecting rod, the rack is of an integral structure, an inner cavity of the rack is a regular hexagon, three limiting blocks are uniformly distributed in the circumferential direction of 120 degrees in the inner cavity of the rack and connected with the rack through screws, and one ends of the limiting blocks, far away from the connecting rod mechanism, are arc-shaped, the roller abdicating device comprises a roller, wherein one side of each limiting block close to a connecting rod mechanism is inwards sunken to form a smooth sliding table, the length of each sliding table is the same as the stroke length of a fixing frame, a lower inclined block is fixedly arranged between the adjacent limiting blocks, an upper inclined block is arranged on the lower inclined block in a sliding manner, a threaded hole is formed in the extending end outside the upper inclined block, an adjusting bolt is connected in the threaded hole in a threaded manner, a limiting ring is arranged at the threaded end of the adjusting bolt, a limiting groove corresponding to the limiting ring is arranged on a rack to realize the axial fixation of the adjusting bolt and the rack, a plurality of locking bolts are arranged on the upper inclined block, a limiting plate is arranged at the other end of each locking bolt, a spring is arranged between the limiting plate and the rack, and the deformation of the spring can be adjusted according to the requirement of locking force, the upper inclined block is used for clamping the upper inclined block, the lower inclined block is provided with a sliding cavity used for abdicating a locking bolt, the upper inclined block is provided with a sliding seat, the sliding seat is provided with a slide way, one side of the sliding seat is also provided with three racks, the three racks of the three sliding seats are all arranged on the same side, the fixing frame is clamped between the three limiting blocks so as to ensure that the fixing frame stably slides on the sliding table of the limiting blocks, one side of the fixing frame close to the connecting rod mechanism is provided with two connecting grooves used for being connected with a long connecting rod, one side of the fixing frame far away from the connecting rod mechanism is uniformly provided with three U-shaped grooves along the circumferential direction, the three U-shaped grooves are respectively positioned between the three limiting blocks, and the U-shaped clamping seat is connected with the U-shaped clamping seat through a pin shaft, the U-shaped clamping seat is formed by connecting two same L-shaped blocks through bolts, corresponding clamping blocks and clamping grooves are respectively arranged on the connecting surfaces of the two L-shaped blocks to limit the two L-shaped blocks, a roller shaft is arranged at the front end of the U-shaped clamping seat, a roller and a third rolling gear are mounted on the roller shaft, the position of the roller corresponds to the position of a slide way, the position of the third rolling gear corresponds to the position of a third rack, a tapered rolling groove with a continuously-changed cross section is formed in the roller, a connecting rod is arranged on one side, close to the rack, of the U-shaped clamping seat, a roller gap adjusting rod is hinged to the other end of the connecting rod, the roller gap adjusting rod penetrates through a fixing frame and is connected with a nut in a threaded mode, and a disc spring group is arranged between the nut and the fixing frame. When the roll gap is adjusted, the position of the upper inclined block is adjusted by rotating the adjusting bolt, so that the sliding seat is controlled to lift, the roll drives the U-shaped clamping seat to rotate around the pin shaft, the roll gap is adjusted, the disc spring group exerts thrust on the roll gap adjusting rod, the roll gap adjusting rod tensions the U-shaped clamping seat all the time, the third rolling gear is guaranteed to be in contact with the third rack all the time, and the roll shaft is in contact with the sliding seat all the time.
Furthermore, no. two balancing weights are arranged on the No. two transmission shafts, and the mounting directions of the No. two balancing weights and the No. one balancing weight are opposite, so that the energy storage in the rolling process is realized.
Still further, the frame adjusting connecting rod is composed of sleeves on two sides and a stud in the middle, nuts are fixedly arranged at opposite ends of the two sleeves, and the frame adjusting connecting rod is connected with the stud through the nuts.
Furthermore, the upper end of the sliding block is fixedly connected with an adjusting screw rod, and the other end of the adjusting screw rod penetrates through the 20866to be connected with a nut so as to adjust the sliding stroke of the sliding block.
Furthermore, a sliding plate is arranged on the side surface of the mounting seat, which is in contact with the stroke groove, so that the abrasion of the mounting seat is reduced.
Compared with the prior art, the invention has the following advantages:
1. the invention adopts a three-roller rolling mechanism which is uniformly distributed at 120 degrees, and the roller is provided with a conical rolling groove with continuously changed cross section, thereby realizing large deformation and simultaneously realizing the improvement of precision;
2. the frame is of an integral structure, has high rigidity, and can bear larger rolling force in the rolling process;
3. the power mechanism adopts a planetary transmission mode, has a high-speed and stable rolling effect, and can double the speed of related products;
4. the rolling mechanism is provided with the third rolling gear and the third rack, so that the sliding state of the roll shaft can be ensured, the service life of the roll shaft is prolonged, and the rolling efficiency is increased.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a top view of the present invention;
FIG. 3 is a cross-sectional view of the present invention;
FIG. 4 is a left side view of the rolling stand of the present invention;
FIG. 5 is a right side view of the rolling stand according to the present invention;
FIG. 6 is a cross-sectional view taken at section B-B of FIG. 4 in accordance with the present invention;
FIG. 7 isbase:Sub>A cross-sectional view taken at section A-A of FIG. 4 with the base removed in accordance with the present invention;
FIG. 8 is a schematic view of the mechanism of the rolling main unit without a base according to the present invention;
FIG. 9 is a schematic view of the installation of the rolls of the present invention;
FIG. 10 is a schematic view of the U-shaped card and roll connection of the present invention;
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Detailed Description
In order to further illustrate the technical solution of the present invention, the present invention is further illustrated by the following examples.
As shown in fig. 1 to 10, a high-speed three-roll cold rolling mill set comprises a power mechanism 1, a link mechanism 2 and a mill main body 3;
the power mechanism 1 comprises a power device 4 and a speed reducer box body 5, an upper reduction box mounting plate 6 and a lower reduction box mounting plate 7 are arranged in the middle of the speed reducer box body 5, a first transmission shaft 8 and a second transmission shaft 9 are arranged between the upper reduction box mounting plate 6 and the lower reduction box mounting plate 7, a first driving gear 10 and a first driven gear 11 which are meshed with each other are respectively arranged on the first transmission shaft 8 and the second transmission shaft 9, the lower end of the first transmission shaft 8 downwards extends to penetrate through the lower reduction box mounting plate 7 to be connected with an output shaft of the power device 4, the upper end of the second transmission shaft 9 upwards extends to penetrate through the upper reduction box mounting plate 6 to be installed with a first disc 12, a first fixing shaft 13 is eccentrically arranged on the first disc 12, a planet gear 14 is arranged on the upper portion of the first fixing shaft 13, the eccentric distance of the first fixing shaft 13 is identical to the radius of the planet gear 14, the planet gear 14 is ensured to do linear reciprocating motion in the direction of the second transmission shaft 17, the planet gear 14 is in a meshing connection with a connection manner, the inner gear 15, the radius of the inner gear 15 is identical to the diameter of the inner gear 14, the inner gear 15 is fixedly arranged on the upper reduction box mounting plate 6, a rolling mill 16 for rolling mill is arranged on the first fixing shaft 16, the upper surface of the first fixing shaft 16 and a second disc 16, the planet gear 16 is arranged on the first fixing shaft 16, the first balancing weight 19 and the first fixing shaft 13 are always positioned on the same side of the axis of the second transmission shaft 9, the second fixing shaft 17 is further provided with a connecting block 20 through a bearing, the second transmission shaft 9 is provided with a second balancing weight 55, and the mounting directions of the second balancing weight 55 and the first balancing weight 19 are opposite, so that the energy storage in the rolling process is realized;
the link mechanism 2 comprises a '20866' shaped rocker 21, two long links 22 which are bilaterally symmetrical, two short links 23 which are bilaterally symmetrical and a rack adjusting link 24, the rack adjusting link 24 consists of sleeves at two sides and a stud at the middle part, nuts are fixedly arranged at the opposite ends of the two sleeves and are connected with the stud through the nuts, two end parts below the '20866' shaped rocker 21 are hinged at one side of a feed port of a base 27, one ends of the two long links 22 which are bilaterally symmetrical are rigidly connected with a connecting block 20, the other ends of the two short links 23 which are bilaterally symmetrical are hinged on the connecting block 20, the other ends of the two short links are hinged at the middle parts of the left and right sides of the '20866' shaped rocker 21, a chute 25 is arranged at the middle part of the upper end of the '2086666' shaped rocker 21, a slide block 26 is arranged in the chute 25, an adjusting screw 56 is fixedly connected at the upper end of the slide block 26, and the other end of the adjusting screw 56 passes through the '208666666' shaped rocker 21 and is connected with a nut to adjust the sliding stroke of the slide block 24 and the rack adjusting link 24 and the rack 28;
the rolling mill main body 3 comprises a base 27, a rack 28 and a fixing frame 29, wherein stroke grooves 30 are formed in the left side and the right side of the base 27, a first rack 31 and a second rack 32 are respectively arranged at the upper end and the lower end of each stroke groove 30, mounting seats 59 corresponding to the stroke grooves 30 are fixedly arranged on the left side and the right side of the rack 28, and sliding plates 57 are arranged on the side surfaces, in contact with the stroke grooves 30, of the mounting seats 59 so as to reduce abrasion of the mounting seats 59. The front side and the rear side of the mounting seat 59 are respectively provided with a first rolling gear 33 and a second rolling gear 34 which are meshed with each other, the first rolling gear 33 and the second rolling gear 34 are respectively meshed with the first rack 31 and the second rack 32, the upper end of the rack 28 is provided with a hinged part 35 for connecting the rack adjusting connecting rod 24, the rack 28 is of an integral structure, the inner cavity of the rack 28 is a regular hexagon, three limit blocks 36 are uniformly distributed in the circumferential direction of 120 degrees in the inner cavity of the rack 28, the limit blocks 36 are connected with the rack 28 through screws, one end, far away from the connecting rod mechanism 2, of each limit block 36 is arc-shaped so as to give way to the roller 50, one side, close to the connecting rod mechanism 2, of each limit block 36 is inwards recessed to form a flat sliding table, and the length of each sliding table is the same as the stroke length of the fixed frame 29, the utility model discloses a fixed sloping block of being provided with down 37 between adjacent stopper 36, slide down on the sloping block 37 and be provided with sloping block 38, the extension end in the last sloping block 38 outside is provided with the screw hole, threaded hole female connection has adjusting bolt 39, the screw thread end of adjusting bolt 39 is provided with spacing ring 40, be provided with the spacing recess 41 corresponding with spacing ring 40 on the frame 28 to realize the axial fixity of adjusting bolt 39 and frame 28, be provided with a plurality of locking bolt 60 on going up sloping block 38, be provided with limiting plate 61 at the other end of locking bolt 60, be provided with spring 58 between limiting plate 61 and the frame 28, can require the deflection of adjustment spring 58 according to the locking force for press from both sides tight last sloping block 38, be provided with the slip chamber 42 that is used for locking bolt 60 to give way on the sloping block 37 down, be provided with slide 43 on going up sloping block 38, a slide rail 44 is arranged on the slide seat 43, a third rack 45 is arranged on one side of the slide seat 43, the third racks 45 of the three slide seats 43 are all arranged on the same side, the fixing frame 29 is clamped between the three limit blocks 36 to ensure that the fixing frame 29 slides smoothly on the sliding tables of the limit blocks 36, two connecting grooves 46 for connecting with the long connecting rod 22 are arranged on one side of the fixing frame 29 close to the link mechanism 2, three U-shaped grooves 47 are uniformly arranged on one side of the fixing frame 29 far away from the link mechanism 2 in the circumferential direction, the three U-shaped grooves 47 are respectively arranged between the three limit blocks 36, a U-shaped clamping seat 48 is connected in the U-shaped groove 47 through a pin shaft, the U-shaped clamping seat 48 is formed by connecting two same L-shaped blocks through bolts, the two L-shaped blocks are connected on the surface, corresponding clamping blocks and clamping grooves are respectively arranged on the connecting surfaces of the two L-shaped blocks to limit the two L-shaped blocks, a roller shaft 49 is arranged at the front end of the U-shaped clamping seat 48, a roller 50 and a third rolling gear 51 are mounted on the roller shaft 49, the position of the roller 50 corresponds to the position of the slide way 44, the position of the third rolling gear 51 corresponds to the position of the third rack 45, a tapered rolling groove with a continuously changing cross section is formed in the roller 50, a connecting rod 52 is arranged on one side, close to the rack 28, of the U-shaped clamping seat 48, a roller gap adjusting rod 53 is hinged to the other end of the connecting rod 52, the roller gap adjusting rod 53 penetrates through the fixing frame 29 and is in threaded connection with a nut, and a disc spring group 54 is arranged between the nut and the fixing frame 29. When the roll gap is adjusted, the position of the upper inclined block 38 is adjusted by rotating the adjusting bolt 39, so that the lifting of the sliding seat 43 is controlled, the roller 50 drives the U-shaped clamping seat 48 to rotate around the pin shaft, the roll gap is adjusted, the disc spring group 54 applies thrust to the roll gap adjusting rod 53, the roll gap adjusting rod 53 pulls the U-shaped clamping seat 48 all the time, the third rolling gear 51 is guaranteed to be in contact with the third rack 45 all the time, and the roller shaft 49 is in contact with the sliding seat 43 all the time.
While there have been shown and described what are at present considered to be the essential features and advantages of the invention, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of being embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (5)
1. A high-speed three-roller cold rolling unit is characterized in that: comprises a power mechanism (1), a connecting rod mechanism (2) and a rolling mill main body (3);
the power mechanism (1) comprises a power device (4) and a speed reducer box body (5), a speed reducer upper mounting plate (6) and a speed reducer lower mounting plate (7) are arranged in the middle of the speed reducer box body (5), a first transmission shaft (8) and a second transmission shaft (9) are arranged between the speed reducer upper mounting plate (6) and the speed reducer lower mounting plate (7), a first driving gear (10) and a first driven gear (11) which are meshed with each other are respectively mounted on the first transmission shaft (8) and the second transmission shaft (9), the lower end of the first transmission shaft (8) extends downwards to penetrate through the speed reducer lower mounting plate (7) to be connected with an output shaft of the power device (4), the upper end of the second transmission shaft (9) extends upwards to penetrate through the speed reducer upper mounting plate (6) to be mounted with a first disc (12), a first fixing shaft (13) is eccentrically arranged on the first disc (12), a planetary gear (14) is arranged on the upper portion of the first fixing shaft (13), the eccentric distance of the first fixing shaft (13) is the same as the radius of an internal gear (17), and the planetary gear (14) is in the same as the rolling direction of the planetary gear (15), and the planetary gear (14) is in a reciprocating motion, the inner gear (15) is fixedly arranged on an installing plate (6) on the reduction gearbox, a second disc (16) is fixedly connected to the upper surface of the planetary gear (14), bearings are arranged between the second disc (16) and the first fixing shaft (13) and between the planetary gear (14) and the first fixing shaft (13), a second fixing shaft (17) is eccentrically arranged on the second disc (16), the eccentric distance of the second fixing shaft (17) and the diameter of the planetary gear (14) jointly determine the stroke length of the rolling mill main body (3), an installing block (18) is connected to the second fixing shaft (17) in a key mode, a first balancing weight (19) is fixedly connected to the installing block (18) to eliminate the inertia impact of the reciprocating motion limit position of the rolling mill main body (3), the first balancing weight (19) and the first fixing shaft (13) are always located on the same side of the axis of the second transmission shaft (9), and a connecting block (20) is further installed on the second fixing shaft (17) through the bearings;
the connecting rod mechanism (2) comprises a 20866-shaped rocker (21), two bilaterally symmetrical long connecting rods (22), two bilaterally symmetrical short connecting rods (23) and a rack adjusting connecting rod (24), wherein two end parts below the 20866-shaped rocker (21) are hinged to one side of a feeding port of a base (27), one ends of the two bilaterally symmetrical long connecting rods (22) are rigidly connected with a connecting block (20), the other ends of the two bilaterally symmetrical short connecting rods (23) are rigidly connected with a fixing frame (29), one ends of the two bilaterally symmetrical short connecting rods (23) are hinged to the connecting block (20), the other ends of the two bilaterally symmetrical short connecting rods (23) are hinged to the middle parts of the left and right sides of the 20866-shaped rocker (21), a sliding groove (25) is arranged in the middle part of the upper end of the 20866-shaped rocker (21), a sliding block (26) is arranged in the sliding groove (25), one end of the rack adjusting connecting rod (24) is hinged to the sliding block (26), and the other end of the rack (28) is hinged to the rack;
the rolling mill main body (3) comprises a base (27), a rack (28) and a fixing frame (29), wherein stroke grooves (30) are formed in the left side and the right side of the base (27), a first rack (31) and a second rack (32) are respectively arranged at the upper end and the lower end of each stroke groove (30), mounting seats (59) corresponding to the stroke grooves (30) are fixedly arranged on the left side and the right side of the rack (28), a first rolling gear (33) and a second rolling gear (34) which are meshed with each other are respectively arranged on the front side and the rear side of each mounting seat (59), a hinging portion (35) is arranged at the upper end of the rack (28) and used for connecting a sunken rack adjusting connecting rod (24), the rack (28) is of an integral structure, the inner cavity of the rack (28) is of a regular hexagon, three limiting blocks (36) are uniformly distributed in the inner cavity of the rack (28), the limiting blocks (36) are connected with the rack adjusting connecting rod (24) through the limiting blocks (36), and the limiting blocks (36) are connected with one end of the limiting block (50) to form an arc-shaped sliding mechanism, and the limiting block (36) mechanism (50) which is close to one side, the length of sliding table is the same with the stroke length of mount (29), fixes between adjacent stopper (36) and is provided with down sloping block (37) slide down on sloping block (37) and be provided with sloping block (38) it is provided with the screw hole to go up the extension end in sloping block (38) outside threaded hole female connection has adjusting bolt (39)'s the screw thread end is provided with spacing ring (40) be provided with spacing recess (41) corresponding with spacing ring (40) on frame (28) to realize adjusting bolt (39) and the axial fixity of frame (28) be provided with a plurality of locking bolt (60) on going up sloping block (38) the other end of locking bolt (60) is provided with limiting plate (61) be provided with spring (58) between limiting plate (61) and frame (28), can require the deflection of adjustment spring (58) according to the locking force for press from both sides tight sloping block (38), be provided with on down sloping block (37) and be used for the sliding cavity (60) of stepping down slide (43), be provided with slide (43) on slide (43) one side still be provided with slide (43), three racks (45) of three sliding seats (43) are all installed on the same side, a fixing frame (29) is clamped between three limiting blocks (36) to ensure that the fixing frame (29) slides stably on sliding tables of the limiting blocks (36), two connecting grooves (46) used for being connected with a long connecting rod (22) are arranged on one side, close to a link mechanism (2), of the fixing frame (29), three U-shaped grooves (47) are circumferentially and uniformly arranged on one side, far away from the link mechanism (2), of the fixing frame (29), the three U-shaped grooves (47) are respectively located between the three limiting blocks (36), U-shaped clamping seats (48) are connected into the U-shaped grooves (47) through pin shafts, the U-shaped clamping seats (48) are formed by connecting two identical L-shaped blocks through bolts, corresponding clamping blocks and clamping grooves are respectively arranged on connecting surfaces of the two L-shaped blocks, limiting positions of the two L-shaped blocks are realized, a roller shaft (49) is arranged at the front ends of the U-shaped clamping seats (48), a roller (50) and a rolling gear (51) are arranged on one side, which is corresponding to a rolling position of a rolling rack (44), and a rolling groove (52) of a rolling roller (50) is arranged on one side, and a rolling groove (28) of the rolling roller (50) of the rolling rod is arranged on which is adjacent to the rolling rack, and a rolling groove (50), and a rolling roller (50) of the rolling roller (50), and a rolling groove (52) of the rolling rack, and a rolling groove (50) is arranged on the rolling mechanism, and a rolling mechanism is arranged on the rolling mechanism, and a rolling mechanism (28) of the rolling mechanism, and a rolling mechanism ) The other end of the connecting rod (52) is hinged with a roll gap adjusting rod (53), the roll gap adjusting rod (53) penetrates through the fixed frame (29) and is connected with a nut in a threaded mode, and a disc spring group (54) is arranged between the nut and the fixed frame (29).
2. A high speed three roll cold rolling mill train according to claim 1, wherein: and a second balancing weight (55) is arranged on the second transmission shaft (9), and the mounting directions of the second balancing weight (55) and the first balancing weight (19) are opposite, so that the energy storage in the rolling process is realized.
3. A high speed three roll cold rolling mill train according to claim 1, wherein: the rack adjusting connecting rod (24) is composed of sleeves on two sides and a stud in the middle, nuts are fixedly arranged at opposite ends of the two sleeves, and the two sleeves are connected with the stud through the nuts.
4. A high speed three roll cold rolling mill train according to claim 1, wherein: an adjusting screw rod (56) is fixedly connected to the upper end of the sliding block (26), and the other end of the adjusting screw rod (56) penetrates through the' 20866to be connected with a nut so as to adjust the sliding stroke of the sliding block (26).
5. A high speed three roll cold rolling mill train according to claim 1, wherein: and a sliding plate (57) is arranged on the side surface of the mounting seat (59) contacted with the stroke groove (30) so as to reduce the abrasion of the mounting seat (59).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| DE19721260C1 (en) * | 1997-05-15 | 1998-10-29 | Mannesmann Ag | Roll changing unit for three roll skew rolling mills |
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| CN2586546Y (en) * | 2002-11-07 | 2003-11-19 | 新乡无氧铜材总厂 | Three-roller planetary pipe mill |
| CN102671955B (en) * | 2012-06-13 | 2014-05-07 | 无锡市瑞尔精密机械股份有限公司 | Sizing mill capable of adjusting roll gap manually |
| CN111495976A (en) * | 2020-04-29 | 2020-08-07 | 西安鼎鑫科技新材料有限公司 | Ultra-large-diameter cold pilger mill, seamless tube and production process thereof |
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