CN109108108B - Main transmission system and transmission method of straightener - Google Patents
Main transmission system and transmission method of straightener Download PDFInfo
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- CN109108108B CN109108108B CN201810974275.3A CN201810974275A CN109108108B CN 109108108 B CN109108108 B CN 109108108B CN 201810974275 A CN201810974275 A CN 201810974275A CN 109108108 B CN109108108 B CN 109108108B
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- straightening
- torque
- distribution box
- transmission
- secondary distribution
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
- B21D1/02—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling by rollers
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- Straightening Metal Sheet-Like Bodies (AREA)
Abstract
The invention relates to a straightening machine in the metallurgical industry, in particular to a main transmission system and a transmission method of the straightening machine. The main transmission system comprises a power source, a speed reduction distribution box, a transmission shaft and straightening rollers, wherein the power source is in transmission connection with the transmission shaft through the speed reduction distribution box, the transmission shaft is in transmission connection with the straightening rollers, at least one secondary distribution box is arranged between the transmission shaft and the straightening rollers, the input end of a single secondary distribution box is connected with at least two transmission shafts, and the output end of the single secondary distribution box is connected with at least two straightening rollers. According to the invention, the secondary distribution box is arranged between the transmission shaft and the straightening roller, so that the torque is subjected to secondary grouping distribution, the torque matching maximization is realized, the straightening range is obviously expanded on the premise that the straightening effect is met by the high-strength thin plate, the damage risk of a transmission system is greatly reduced, the change range of the straightening machine is small, and the performance can be greatly improved.
Description
Technical Field
The invention relates to a straightening machine in the metallurgical industry, in particular to a main transmission system and a transmission method of the straightening machine.
Background
The straightening machine is equipment for straightening metal sections, bars, pipes, plates and the like. The main transmission system of the existing straightening machine generally comprises a power source, a speed reduction distribution box, a transmission shaft and a straightening roller, wherein torque generated by the power source is distributed by the speed reduction distribution box and then is transmitted to the straightening roller by the transmission shaft. In order to ensure the transmission of the torque, the rated transmission torque of the transmission shaft must be greater than or equal to the maximum working torque of the straightening roller, otherwise, the weak link of the transmission system can be damaged. The straightening machine is provided with a plurality of straightening rollers, the working torques of different straightening rollers are different, the working torques of the straightening rollers are generally distributed in a curve of small → large → small from front to back, the working torque of the straightening roller positioned in the middle is larger, the working torques of the straightening rollers positioned at two ends are smaller, and the rated torque of a transmission shaft cannot be smaller than the maximum working torque of the middle straightening roller. Particularly, when a high-strength sheet is straightened, because the straightening of the sheet requires more straightening rollers and is limited by the arrangement of position space, the diameter of a transmission shaft is required to be smaller, and the rated torque of the transmission shaft is smaller, the rated torque of the transmission shaft cannot reach the maximum working torque of the straightening rollers and cannot meet the straightening requirement of the high-strength sheet when the high-strength sheet is straightened, and if large torque is transmitted forcibly, the weak link of a transmission system is easily damaged.
Disclosure of Invention
The invention aims to solve the technical problem of providing a main transmission system and a transmission method of a straightening machine, which improve the stress of the transmission system when a high-strength sheet is straightened, enlarge the straightening range and reduce the damage risk of the transmission system.
The invention discloses a main transmission system of a straightener, which comprises a power source, a deceleration distribution box, a transmission shaft and straightening rollers, wherein the power source is in transmission connection with the transmission shaft through the deceleration distribution box;
in the same two-stage distribution box, the sum of the required torques of all the straightening rollers is less than or equal to the sum of the rated torques of all the transmission shafts, and the working torque of the straightening roller with the largest required torque is greater than the rated torque of a single transmission shaft; the working torque of the straightening roller with the minimum required torque is smaller than the rated torque of a single transmission shaft.
Preferably, the number of the secondary distribution boxes is at least two, the transmission shafts are connected with the secondary distribution boxes in groups, the transmission shafts in the same group are connected with the same secondary distribution box, the straightening rollers in the same group are connected with the secondary distribution boxes in groups, and the straightening rollers in the same group are connected with the same secondary distribution box.
Preferably, the torque input by the transmission shaft is secondarily distributed by using a secondary distribution box and then output to the straightening rollers, and in the same secondary distribution box, the straightening rollers needing larger working torque are distributed with larger torque, and the straightening rollers needing smaller working torque are distributed with smaller torque.
The invention has the beneficial effects that: according to the invention, the secondary distribution box is arranged between the transmission shaft and the straightening rollers, so that the torque is subjected to secondary grouping distribution, the straightening rollers with larger working torque are distributed with larger torque, the straightening rollers with smaller working torque are distributed with smaller torque, and the torque matching maximization is realized.
Drawings
FIG. 1 is a schematic view showing the structural relationship of the main drive system of the leveler of the present invention;
FIG. 2 is a straightening ability curve under a conventional main drive system;
FIG. 3 is a curve of the straightening ability of the main drive system according to the present invention.
Reference numerals: 1-power source, 2-speed reduction distribution box, 3-transmission shaft, 4-straightening roller and 5-secondary distribution box.
Detailed Description
The present invention is further described below.
As shown in fig. 1, the main transmission system of the straightener disclosed by the invention comprises a power source 1, a deceleration distribution box 2, transmission shafts 3 and straightening rollers 4, wherein the power source 1 is in transmission connection with the transmission shafts 3 through the deceleration distribution box 2, the transmission shafts 3 are in transmission connection with the straightening rollers 4, at least one secondary distribution box 5 is arranged between the transmission shafts 3 and the straightening rollers 4, the input end of a single secondary distribution box 5 is connected with at least two transmission shafts 3, and the output end of the single secondary distribution box 5 is connected with at least two straightening rollers 4;
in the same two-stage distribution box 5, the sum of the required torques of all the straightening rollers 4 is less than or equal to the sum of the rated torques of all the transmission shafts 3, and the working torque of the straightening roller 4 with the largest required torque is greater than the rated torque of a single transmission shaft 3; the working torque of the straightening roller 4 with the minimum required torque is smaller than the rated torque of the single transmission shaft 3.
The transmission method of the transmission system is that the torque input by the transmission shaft 3 is secondarily distributed by the secondary distribution box 5 and then output to the straightening roller 4, and in the same secondary distribution box 5, a greater torque is distributed to the straightening rolls 4 requiring a greater working torque, a smaller torque is distributed to the straightening rolls 4 requiring a smaller working torque, therefore, under the condition that the rated torque of the transmission shaft 3 is not changed and the sum of the required torques of all the straightening rollers is still less than or equal to the sum of the rated torques of all the transmission shafts, the straightening roller 4 which requires larger torque obtains larger torque, the straightening rollers 4 requiring smaller torque obtain smaller torque, each transmission shaft 3 can exert the maximum working torque to play a role in peak clipping and valley filling, the torque requirements of all the straightening rollers 4 are met to the maximum extent, the straightening range is expanded, and the problem that part of the transmission shafts 3 are damaged due to overlarge transmission torque is not needed to be worried about. Wherein, the second grade distributor box 5 can purchase the speed reduction distributor of the looks adaptation of market according to the size of moment of torsion, can adopt existing modes such as universal joint to connect between second grade distributor box 5 and the transmission shaft 3, and the leveling roller 4 can be through mode such as spline connection. The number of the transmission shafts and the number of the straightening rollers connected with the same secondary distribution box 5 can be equal or unequal. For example, three straightening rollers and three transmission shafts can be connected to one secondary distribution box 5; or four straightening rollers and three transmission shafts can be connected to one secondary distribution box 5.
For the condition that the number of the straightening rollers 4 is large and distribution cannot be completed through a single secondary distribution box 5, the number of the secondary distribution boxes 5 is at least two, the transmission shafts 3 are connected with the secondary distribution boxes 5 in groups, the transmission shafts 3 in the same group are connected with the same secondary distribution box 5, the straightening rollers 4 are connected with the secondary distribution boxes 5 in groups, and the straightening rollers 4 in the same group are connected with the same secondary distribution box 5.
For the sake of convenience of installation arrangement, it is usual that at least two adjacent drive shafts 3 and straightening rollers 4 are grouped in the same group and connected to the same secondary distribution box 5, and the straightening rollers 4 in the same group have different maximum operating torques and are redistributed by the secondary distribution box 5 with respect to the torque input to the drive shafts 3 so as to be adapted to the required torque of the straightening rollers 4.
Fig. 2 is a straightening ability curve of a conventional main drive system, and fig. 3 is a straightening ability curve of the main drive system according to the present invention, wherein the portion below the curve is the working range of the straightening machine, and the portion below the curve is the portion where the straightening machine cannot perform the straightening operation. Under the same condition, each straightening capability curve is changed from X to X' (wherein X is A, B, C and the like), and as can be seen from comparing the two figures, the 13-roller straightening machine has enough space positions and larger rated torque of the transmission shaft 3, and can meet the maximum working torque of the straightening roller 4, so that the straightening capability curve under the traditional main transmission system is similar to that under the main transmission system of the invention and basically has no change. However, the 13-roll leveler cannot straighten a steel sheet having a thickness of 3mm or less, and only the 17-roll leveler can be used for such a steel sheet, and the 17-roll leveler can straighten a steel sheet having a thickness of 1mm or more. However, the 17-roll straightener is affected by the spatial arrangement, and cannot arrange the transmission shaft 3 with a larger diameter, so that the rated torque of the transmission shaft 3 is smaller, and accordingly, the traditional transmission system cannot provide enough torque for the straightening roll 4, so that the strength of the steel plate which can be straightened is limited. As is apparent from FIG. 3, the straightening ability curve height of the 17-roll straightener is greatly improved by using the main transmission system of the present invention, that is, the main transmission system of the present invention can straighten a steel plate with higher strength under the same conditions without worrying about the problem that the transmission system is damaged due to excessively high torque.
Claims (1)
1. The method for expanding the straightening range and reducing the damage risk of the transmission system by adopting the main transmission system of the straightening machine is characterized by comprising the following steps of: the main transmission system of the straightener comprises a power source (1), a deceleration distribution box (2), transmission shafts (3) and straightening rollers (4), wherein the power source (1) is in transmission connection with the transmission shafts (3) through the deceleration distribution box (2), the transmission shafts (3) are in transmission connection with the straightening rollers (4), at least two secondary distribution boxes (5) are arranged between the transmission shafts (3) and the straightening rollers (4), the input end of a single secondary distribution box (5) is connected with at least two transmission shafts (3), and the output end of the single secondary distribution box is connected with at least two straightening rollers (4);
in the same two-stage distribution box (5), the sum of the required torques of all the straightening rollers (4) is less than or equal to the sum of the rated torques of all the transmission shafts (3), and the working torque of the straightening roller (4) with the largest required torque is greater than the rated torque of a single transmission shaft (3); the working torque of the straightening roll (4) with the minimum required torque is smaller than the rated torque of a single transmission shaft (3);
the transmission shafts (3) are connected with the secondary distribution boxes (5) in groups, the transmission shafts (3) in the same group are connected with the same secondary distribution box (5), the straightening rollers (4) in the same group are connected with the secondary distribution boxes (5) in groups, and the straightening rollers (4) in the same group are connected with the same secondary distribution box (5);
the torque input by the transmission shaft (3) is secondarily distributed by utilizing the secondary distribution box (5) and then output to the straightening rollers (4), and in the same secondary distribution box (5), the straightening rollers (4) needing larger working torque are distributed with larger torque, and the straightening rollers (4) needing smaller working torque are distributed with smaller torque.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810974275.3A CN109108108B (en) | 2018-08-24 | 2018-08-24 | Main transmission system and transmission method of straightener |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810974275.3A CN109108108B (en) | 2018-08-24 | 2018-08-24 | Main transmission system and transmission method of straightener |
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| CN109108108A CN109108108A (en) | 2019-01-01 |
| CN109108108B true CN109108108B (en) | 2020-05-19 |
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| CN201810974275.3A Active CN109108108B (en) | 2018-08-24 | 2018-08-24 | Main transmission system and transmission method of straightener |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5954420A (en) * | 1982-09-20 | 1984-03-29 | Nippon Steel Corp | Driving device of roll leveler |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6099430A (en) * | 1983-11-07 | 1985-06-03 | Sumitomo Heavy Ind Ltd | Driving device of roller leveler |
| DE202004021823U1 (en) * | 2004-04-07 | 2011-05-19 | Sundwig GmbH, 58675 | Straightening machine with exchangeable cassette |
| WO2008145355A1 (en) * | 2007-05-30 | 2008-12-04 | Arku Maschinenbau Gmbh | Straightening machine having a straightening roller rapid-change system, and a method for rapidly changing straightening rollers of a straightening machine |
| CN101869933A (en) * | 2010-06-21 | 2010-10-27 | 长治钢铁（集团）锻压机械制造有限公司 | Row-divided driving mechanism of flattening machine |
| EP2572810A1 (en) * | 2011-09-22 | 2013-03-27 | Siemens VAI Metals Technologies SAS | Levelling equipment |
| CN104801572A (en) * | 2015-03-26 | 2015-07-29 | 长治钢铁（集团）锻压机械制造有限公司 | Compact hydraulic group drive leveller |
| CN204974822U (en) * | 2015-09-18 | 2016-01-20 | 康凤明 | Transmission system of straightening machine and applied this transmission system's straightening machine |
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2018
- 2018-08-24 CN CN201810974275.3A patent/CN109108108B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5954420A (en) * | 1982-09-20 | 1984-03-29 | Nippon Steel Corp | Driving device of roll leveler |
Non-Patent Citations (1)
| Title |
|---|
| 十三辊高强度中板矫直机集中传动齿轮分配箱的传动方案设计;赵岽等;《中国重型装备》;20160311(第1期);第7-10页 * |
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