CN113251132A - Triple-speed-reduction split-shaft box for multi-roller straightener - Google Patents

Abstract

A triple speed reduction axle-splitting box for a multi-roll straightener comprises a box body, an input gear shaft and a plurality of output shafts, wherein the input gear shaft and the plurality of output shafts are arranged in the box body; when the rotating direction of each output shaft in the upper row is clockwise, the rotating direction of each output shaft in the lower row is anticlockwise, and the rotating directions of each output shaft in the middle row are clockwise and anticlockwise alternately in sequence; when the rotating direction of each output shaft in the upper row is anticlockwise and the rotating direction of each output shaft in the lower row is clockwise, the rotating directions of the output shafts in the middle row are anticlockwise and clockwise alternately in sequence. Compared with the traditional double-reduction axle-splitting box, the triple-reduction axle-splitting box has the advantages that the structure size is small under the condition of the same torque, the installation space is saved, the angle of the universal coupling at the edge part is reduced, and the service life of the universal coupling is prolonged.

Description

Triple-speed-reduction split-shaft box for multi-roller straightener

Technical Field

The invention relates to a main transmission speed reduction split-axle structure of a multi-roll straightener, in particular to a triple speed reduction split-axle box for the multi-roll straightener.

Background

With the progress of society and the development of science and technology, in order to meet the requirements of customers on the continuous improvement of the quality of metal plates, the requirements of people on a multi-roll straightener are continuously improved, a wider straightening range is provided for the multi-roll straightener, the range is enlarged, the diameter of a working roll is reduced, the transmission torque needs to be enlarged, the same plate thickness and the same rolling reduction are realized, the diameter of the working roll is smaller, the required straightening force is larger, and the transmission torque is larger. The thinner the straightening plate thickness is, the larger the bending is required, and the thinner the diameter of the straightening roll is. When the straightening force is calculated, the thicker the plate thickness is, the larger the straightening force is. Therefore, when the straightening range is large, the roll diameter needs to be reduced, and the transmission torque is increased. In the existing double-reduction axle splitting box, a working roll is connected with an output gear shaft of the reduction axle splitting box through a universal coupling (a universal coupling simple coupling), the working roll comprises an upper working roll and a lower working roll, the output gear shaft of the reduction axle splitting box is divided into an upper row and a lower row, an upper row of output gear shafts corresponds to the upper working roll, a lower row of output gear shafts corresponds to the lower working roll, and the universal coupling is also correspondingly divided into an upper row of universal coupling and a lower row of universal coupling. The upper working roll needs to move up and down or swing left and right in the working process, and one end of the upper row of universal couplings corresponding to the upper working roll also correspondingly moves. The universal coupling adopts an inner spherical surface channel, an outer spherical surface channel, a retainer and a steel ball, the channels and the spherical surfaces are not completely concentric, the stress surface of the channels can be reduced after the deflection angles of the two shafts of the universal coupling, and the self bearing can be reduced. Meanwhile, after the two shafts of the universal coupling have a certain included angle, the mechanical efficiency is reduced, the torque has a component, a part of torque becomes radial force, the transmission efficiency of the universal coupling is reduced, and an additional bending moment is generated at the same time and is related to the size of the included angle, so that larger input force is needed under the condition of the same output torque, the channel and the steel ball are easy to wear, and the service life of the universal coupling is shortened.

Disclosure of Invention

The invention aims to provide a triple speed reduction axle-splitting box for a multi-roll straightener, which has a compact structure and prolongs the service life of a universal coupling matched with the triple speed reduction axle-splitting box.

The technical problem solved by the invention is realized by adopting the following technical scheme: a triple speed reduction axle-splitting box for a multi-roll straightener comprises a box body, an input gear shaft and a plurality of output shafts, wherein the input gear shaft and the plurality of output shafts are arranged in the box body; when the rotating direction of each output shaft in the upper row is clockwise, the rotating direction of each output shaft in the lower row is anticlockwise, and the rotating directions of each output shaft in the middle row are clockwise and anticlockwise alternately in sequence; when the rotating direction of each output shaft in the upper row is anticlockwise and the rotating direction of each output shaft in the lower row is clockwise, the rotating directions of the output shafts in the middle row are anticlockwise and clockwise alternately in sequence; the plurality of output shafts are divided into a first-stage transmission gear shaft group, a second-stage transmission gear shaft group and a third-stage transmission gear shaft group, the first-stage transmission gear shaft group comprises at least two first-stage output gear shafts, each first-stage output gear shaft is provided with a front gear and a rear gear, each first-stage output gear shaft is sequentially arranged in the middle of the box body along the horizontal direction, and the input gear shafts are simultaneously meshed with the front gears of the two first-stage output gear shafts for transmission; the secondary transmission gear shaft group comprises a plurality of secondary output gear shafts, the tertiary transmission gear group comprises a plurality of tertiary output gear shafts, a rear gear of each primary output gear shaft is at least meshed with and drives two secondary output gear shafts, and at least one secondary output gear shaft is meshed with and drives at least one tertiary output gear shaft; each second-stage output gear shaft and each third-stage output gear shaft are positioned in the middle part of the box body or on the upper part of the box body or on the lower part of the box body; when the first-stage transmission gear shaft group comprises at least three first-stage output gear shafts, at least one transition gear shaft is also arranged in the box body, and the front gear of at least one first-stage output gear shaft is in meshing transmission with the front gear of another first-stage output gear shaft through the transition gear shaft.

The secondary output gear shaft and the tertiary output gear shaft are both provided with a gear, and the gear of the secondary output gear shaft is meshed with the rear gear of the primary output gear shaft and the gear of the tertiary output gear shaft.

The gear diameter of the input gear shaft is equal to that of the transition gear shaft, and the gear diameter of the input gear shaft is smaller than that of the front gear of the primary output gear shaft.

A triple speed reduction axle-splitting box for a multi-roll straightener comprises a box body, an input gear shaft and a plurality of output shafts, wherein the input gear shaft and the plurality of output shafts are arranged in the box body; the output shafts are divided into a first-stage transmission gear shaft group, a second-stage transmission gear shaft group and a third-stage transmission gear shaft group, the first-stage transmission gear shaft group comprises three first-stage output gear shafts, the three first-stage output gear shafts are an upper output gear shaft I, an upper output gear shaft V and an upper output gear shaft eight, the first-stage output gear shafts are provided with front gears and rear gears, each first-stage output gear shaft is sequentially arranged in the middle of the box body along the horizontal direction, and the input gear shaft is simultaneously in meshing transmission with the front gears of the two first-stage output gear shafts; the secondary transmission gear shaft group comprises ten secondary output gear shafts, wherein the ten secondary output gear shafts comprise a first lower output gear shaft, a second lower output gear shaft, a third lower output gear shaft, a fourth lower output gear shaft, a fifth lower output gear shaft, a sixth lower output gear shaft, a seventh lower output gear shaft, an eighth lower output gear shaft, a ninth lower output gear shaft and a seventh upper output gear shaft; the three-level transmission gear set comprises six three-level output gear shafts, wherein the six three-level output gear shafts comprise an upper output gear shaft II, an upper output gear shaft III, an upper output gear shaft IV, an upper output gear shaft VI, an upper output gear shaft ninth and a lower output gear shaft tenth;

the input gear shaft and the transition gear shaft are the same, the upper output gear shaft I, the upper output gear shaft V and the upper output gear shaft eight are the same in structure, and the gear of the upper output gear shaft I is smaller than that of the output shaft; the input gear shaft simultaneously drives an upper output gear shaft I and an upper output gear shaft V; the transition gear shaft simultaneously drives an upper output gear shaft five and an upper output gear shaft eight;

the upper output gear shaft I drives an upper output gear shaft II, an upper output gear shaft III, a lower output gear shaft I, a lower output gear shaft II and a lower output gear shaft III, the upper output gear shaft five drives an upper output gear shaft IV, an upper output gear shaft VI, a lower output gear shaft IV, a lower output gear shaft V and a lower output gear shaft VI, the upper output gear shaft eight drives an upper output gear shaft seven, an upper output gear shaft nine, a lower output gear shaft seven, a lower output gear shaft eight, a lower output gear shaft nine and a lower output gear shaft ten; the upper output gear shaft I is meshed with the lower output gear shaft I, the lower output gear shaft II and the lower output gear shaft III; the lower output gear shaft III is meshed with the upper output gear shaft II and the upper output gear shaft III; the upper output gear shaft five is meshed with the lower output gear shaft four, the lower output gear shaft five and the lower output gear shaft six; the lower output gear shaft six is meshed with the upper output gear shaft four and the upper output gear shaft six; the upper output gear shaft eight is meshed with the lower output gear shaft seven, the lower output gear shaft eight and the lower output gear shaft nine; the lower output gear shaft nine is meshed with the upper output gear shaft seven and the upper output gear shaft nine, and the upper output gear shaft nine is meshed with the lower output gear shaft ten.

Compared with the conventional double-reduction axle-splitting box, the double-reduction axle-splitting box has a triple structure, namely, each primary output gear shaft, each secondary output gear shaft and each tertiary output gear shaft are arranged in the box body in three rows. The invention adopts triple arrangement to shorten the maximum distance L of the working rolls, achieves the purpose of reducing the use angle of the universal coupling in the multi-roll straightener and prolongs the service life of the coupling. The moment that universal joint can bear when transmission angle is little is bigger than the moment that can bear when transmission angle is big. In the multi-roll straightener, the working rolls are subjected to the same moment, and the transmission angle of the universal coupling is smaller than that of a conventional universal coupling of a double-reduction axle-splitting box.

The coupling torque refers to the torque which the coupling can bear, and the transmission torque refers to the torque required by the equipment.

Two factors affecting the coupling torque: the method comprises the following steps that firstly, the overall dimension is larger, the relationship between the overall dimension and the moment of a coupler is that the larger the diameter is, the larger the moment which can be borne by the coupler is, the working rolls of the multi-roll straightener are arranged closely, the spacing of the working rolls is generally designed to be 1-2mm, each roll needs to be driven, and the diameter of the coupler cannot be larger than that of the working rolls in order to avoid interference; and secondly, the transmission angle is set, the teeth of the gear shaft of the existing double-reduction sub-shaft box meet the strength requirement, and the center distance of the output gear shaft is twice of the center distance of the working roll. In the universal coupling adopted by the two transmissions, only the gear shaft in the middle of the speed reducing branch box is aligned with the middle working roll of the roll system, and the gear shafts of the speed reducing branch boxes at the two ends are not aligned with the working roll shafts at the two ends, so that the shaft coupling can form an angle, the service life of the same shaft coupling with a large transmission angle is short, and the service life of the same shaft coupling with a small transmission angle is long. The diameter of the working roll limits the size of the coupler, the maximum diameter of the coupler cannot meet the requirement of torque even if the maximum diameter of the working roll is achieved, starting from a transmission angle, and the transmission needs to be carried out by a structure which is more compact than that of a traditional two-layer axle box. The triple reduction sub-shaft box has smaller external dimension than the double reduction sub-shaft box under the condition of the same rated torque.

The invention adopts triple arrangement to reduce the total distance L of the output shafts, thereby achieving the purpose of reducing the use angle of the coupler and prolonging the service life of the coupler. The triple speed reduction branch box can accurately reduce the speed of the structure of the torque transmitted by the branch shaft through a mechanical gear structure. The output shafts of the double-reduction axle-splitting box are divided into two rows, and the triple-reduction axle-splitting box is divided into three rows. The angle of the coupler at the edge of the double-speed reduction split shaft box can reach 9-14 degrees under the common condition, and the angle of the coupler at the edge of the triple-speed reduction split shaft box can be reduced to 3-6 degrees.

Drawings

The figure is a schematic structural diagram of the invention;

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

FIG. 2 is a side view of FIG. 1;

FIG. 3 is a top view of FIG. 1;

FIG. 4 is a cross-sectional view of FIG. 2A-A;

FIG. 5 is a cross-sectional view of FIG. 2B-B;

FIG. 6 is a roller set layout;

FIG. 7 is an arrangement of dual deceleration axleboxes;

FIG. 8 is a schematic view of a multi-roller drive layout (employing triple reduction split boxes);

FIG. 9 is a schematic view of a multi-roller drive layout (using dual reduction axlebox);

in the figure: 1. a box body; 2. an input gear shaft; 3. a transition gear shaft; 4. an upper output gear shaft I; 5. an upper output gear shaft five; 6. an upper output gear shaft eight; 7. an upper output gear shaft II; 8. an upper output gear shaft III; 9. an upper output gear shaft four; 10. an upper output gear shaft six; 11. an upper output gear shaft seven; 12. an upper output gear shaft nine; 13. a first lower output gear shaft; 14. a second lower output gear shaft; 15. a lower output gear shaft III; 16. a fourth lower output gear shaft; 17. a fifth lower output gear shaft; 18. a lower output gear shaft six; 19. a lower output gear shaft seven; 20. a lower output gear shaft eight; 21. a ninth lower output gear shaft; 22. a lower output gear shaft ten; 23. an upper work roll; 24. a lower working roll; 25. an intermediate roll; 26. an intermediate roll; 27. a universal coupling; 28. a drive motor; 29. a roller system.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained below by combining the specific drawings.

As shown in fig. 1-5, the triple reduction split-axle box structure is a gear reduction split-axle mechanism, and has two stages of transmission, wherein the first stage of transmission mainly realizes speed reduction, and three output shafts are separated through self and transition gear drive. The specific implementation is that the input gear shaft 2, the transition gear shaft 3, the upper output gear shaft I4, the upper output gear shaft five 5 and the upper output gear shaft eight 6 are all installed on the box body 1. The gears of the input gear shaft 2 and the transition gear shaft 3 are the same, the gears of the upper output gear shaft I4, the upper output gear shaft V5 and the upper output gear shaft eight 6 are the same, and the gear of the input shaft is smaller than that of the output shaft, so that speed reduction is realized. The input gear shaft 2 drives an upper output gear shaft I4 and an upper output gear shaft V5 simultaneously in a transmission sequence; the transition gear shaft 3 simultaneously drives an upper output gear shaft five 5 and an upper output gear shaft eight 6; thereby realizing the same rotating speed and the same rotating direction of the three output shafts. The transmission sequence is shown in FIG. 4.

In the secondary transmission, the upper output gear shaft I4 drives serial numbers 7, 8, 13, 14 and 15, the upper output gear shaft V5 drives serial numbers 9, 10, 16, 17 and 18, the upper output gear shaft eight 6 drives serial numbers 11, 12, 19, 20, 21 and 22, and gears realize the same rotating speed but rotate in 9 forward directions and 10 backward directions. All gear shafts are mounted on the box body 1 and are not repeated. Describing a split shaft principle, an upper output gear shaft I4 is meshed with a lower output gear shaft I13, a lower output gear shaft II 14 and a lower output gear shaft III 15; the lower output gear shaft III 15 is meshed with the upper output gear shaft II 7 and the upper output gear shaft III 8. The upper output gear shaft five 5 is meshed with the lower output gear shaft four 16, the lower output gear shaft five 17 and the lower output gear shaft six 18; a sixth lower output gear shaft 18 is meshed with a fourth upper output gear shaft 9 and a sixth upper output gear shaft 10; the upper output gear shaft eight 6 is meshed with the lower output gear shaft seven 19, the lower output gear shaft eight 20 and the lower output gear shaft nine 21; the lower output gear shaft nine 21 is meshed with the upper output gear shaft seven 11 and the upper output gear shaft nine 12, and the upper output gear shaft nine 12 is meshed with the lower output gear shaft ten 22. Therefore, the rotating speeds of all the output shafts are the same, and the first to nine same rotating directions of the upper output shaft are opposite to the first to ten rotating directions of the lower output shaft.

In fig. 6, the size L is the maximum distance between the working rolls, the output shaft of the upper row or the middle row is connected with the upper working roll 23, the number of the upper working rolls is 9, the output shaft of the lower row or the middle row is connected with the lower working roll 24, the number of the lower working rolls is 10, and the multi-roll straightener has an upper row of working rolls and a lower row of working rolls. Among them, 25 is an intermediate roll. Compare traditional doubly under the condition of reducing the speed and dividing the axle box under same output torque, compare from figure 7 and figure 1, can see that triple speed reduction divides the axle box, the structure is compacter, and the appearance is little, and the interval is little, so the angle of shaft coupling is little to improve the life of shaft coupling. The assembly parts of the motor, the speed reduction axial direction and the coupler are called as a transmission device in the equipment, and the output torque of the motor, the speed reduction axial direction and the coupler is the transmission torque.

In the multi-roll straightener, when only one of the reduction split shaft boxes is doubled and tripled, and other conditions are the same, the angle of the side coupling using the triple reduction box is 3 degrees (as shown in fig. 8), and the angle of the side coupling using the two reduction boxes is 9 degrees (as shown in fig. 9). The coupler is not replaced by equipment using the triple reduction gearbox for one year in field use, and the coupler is replaced by equipment using the double reduction gearbox. Wherein 26 is an intermediate roll; 27 is a universal coupling; 28 is a transmission motor; 29 is a roll system.

While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be understood by those skilled in the art that the invention is not limited by the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents.

Claims (4)

1. The utility model provides a triple speed reduction axle-splitting box for multi-roll straightener which characterized in that: the transmission device comprises a box body (1), an input gear shaft (2) arranged in the box body (1), and a plurality of output shafts, wherein the output shafts are arranged in the box body (1) in an upper-middle-lower three-row manner; when the rotating direction of each output shaft in the upper row is clockwise, the rotating direction of each output shaft in the lower row is anticlockwise, and the rotating directions of each output shaft in the middle row are clockwise and anticlockwise alternately in sequence; when the rotating direction of each output shaft in the upper row is anticlockwise and the rotating direction of each output shaft in the lower row is clockwise, the rotating directions of the output shafts in the middle row are anticlockwise and clockwise alternately in sequence; the output shafts are divided into a first-stage transmission gear shaft group, a second-stage transmission gear shaft group and a third-stage transmission gear shaft group, the first-stage transmission gear shaft group comprises at least two first-stage output gear shafts, each first-stage output gear shaft is provided with a front gear and a rear gear, each first-stage output gear shaft is sequentially arranged in the middle of the box body (1) along the horizontal direction, and the input gear shaft (2) is simultaneously in meshing transmission with the front gears of the two first-stage output gear shafts; the secondary transmission gear shaft group comprises a plurality of secondary output gear shafts, the tertiary transmission gear group comprises a plurality of tertiary output gear shafts, a rear gear of each primary output gear shaft is at least meshed with and drives two secondary output gear shafts, and at least one secondary output gear shaft is meshed with and drives at least one tertiary output gear shaft; each two-stage output gear shaft and each three-stage output gear shaft are positioned in the middle of the box body (1), or on the upper part of the box body (1), or on the lower part of the box body (1);

when the first-stage transmission gear shaft group comprises at least three first-stage output gear shafts, at least one transition gear shaft (3) is further arranged in the box body (1), and a front gear of at least one first-stage output gear shaft is in meshing transmission with a front gear of another first-stage output gear shaft through one transition gear shaft (3).

2. The triple reduction journal box for a multi-roll leveler as set forth in claim 1, wherein: the secondary output gear shaft and the tertiary output gear shaft are both provided with a gear, and the gear of the secondary output gear shaft is meshed with the rear gear of the primary output gear shaft and the gear of the tertiary output gear shaft.

3. The triple reduction journal box for a multi-roll leveler as set forth in claim 1, wherein: the gear diameter of the input gear shaft (2) is equal to that of the transition gear shaft (3), and the gear diameter of the input gear shaft (2) is smaller than that of the front gear of the primary output gear shaft.

4. The utility model provides a triple speed reduction axle-splitting box for multi-roll straightener which characterized in that: the transmission device comprises a box body (1), an input gear shaft (2) arranged in the box body (1), and a plurality of output shafts, wherein the output shafts are arranged in the box body (1) in an upper-middle-lower three-row manner; the output shafts are divided into a first-stage transmission gear shaft group, a second-stage transmission gear shaft group and a third-stage transmission gear shaft group, the first-stage transmission gear shaft group comprises three first-stage output gear shafts, the three first-stage output gear shafts are an upper output gear shaft I (4), an upper output gear shaft V (5) and an upper output gear shaft eight (6), the first-stage output gear shafts are provided with front gears and rear gears, each first-stage output gear shaft is sequentially arranged in the middle of the box body (1) along the horizontal direction, and the input gear shaft (2) is simultaneously in meshing transmission with the front gears of the two first-stage output gear shafts; the secondary transmission gear shaft group comprises ten secondary output gear shafts, wherein the ten secondary output gear shafts comprise a first lower output gear shaft (13), a second lower output gear shaft (14), a third lower output gear shaft (15), a fourth lower output gear shaft (16), a fifth lower output gear shaft (17), a sixth lower output gear shaft (18), a seventh lower output gear shaft (19), an eighth lower output gear shaft (20), a ninth lower output gear shaft (21) and a seventh upper output gear shaft (11); the three-level transmission gear set comprises six three-level output gear shafts, wherein the six three-level output gear shafts comprise an upper output gear shaft II (7), an upper output gear shaft III (8), an upper output gear shaft IV (9), an upper output gear shaft VI (10), an upper output gear shaft nine (12) and a lower output gear shaft ten (22);

the gears of the input gear shaft (2) and the transition gear shaft (3) are the same, the structures of the upper output gear shaft I (4), the upper output gear shaft V (5) and the upper output gear shaft eight (6) are the same, and the gear of the upper output gear shaft I (4) is smaller than that of the output shaft; the input gear shaft (2) simultaneously drives the upper output gear shaft I (4) and the upper output gear shaft V (5); the transition gear shaft (3) simultaneously drives an upper output gear shaft five (5) and an upper output gear shaft eight (6);

the upper output gear shaft I (4) drives an upper output gear shaft II (7), an upper output gear shaft III (8), a lower output gear shaft I (13), a lower output gear shaft II (14) and a lower output gear shaft III (15), the upper output gear shaft V (5) drives an upper output gear shaft IV (9), an upper output gear shaft VI (10), a lower output gear shaft IV (16), a lower output gear shaft V (17) and a lower output gear shaft VI (18), the upper output gear shaft eight (6) drives an upper output gear shaft seven (11), an upper output gear shaft nine (12), a lower output gear shaft seven (19), a lower output gear shaft eight (20), a lower output gear shaft nine (21) and a lower output gear shaft ten (22); the upper output gear shaft I (4) is meshed with the lower output gear shaft I (13), the lower output gear shaft II (14) and the lower output gear shaft III (15); the lower output gear shaft III (15) is meshed with the upper output gear shaft II (7) and the upper output gear shaft III (8); the upper output gear shaft five (5) is meshed with the lower output gear shaft four (16), the lower output gear shaft five (17) and the lower output gear shaft six (18); a sixth lower output gear shaft (18) is meshed with a fourth upper output gear shaft (9) and a sixth upper output gear shaft (10); an upper output gear shaft eight (6) is meshed with a lower output gear shaft seven (19), a lower output gear shaft eight (20) and a lower output gear shaft nine (21); and the lower output gear shaft nine (21) is meshed with the upper output gear shaft seven (11) and the upper output gear shaft nine (12), and the upper output gear shaft nine (12) is meshed with the lower output gear shaft ten (22).

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