SU569342A1 - Actuator for working rolls of reversible rolling mill - Google Patents

Description

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The invention relates to rolling production.

Known drives for symmetric rolling mills with equal peripheral speeds; working rolls and approximately equal resistance points on the shafts of the drive motors.

Structural designs of the electric drive of the stand may be different. In the factory №-, depending on the technical conditions (the appointment of JQ mill diameter work rolls, etc.). the drive can be carried out through the supporting shafts, or through the workers, in addition, it can be individual or group.

However, these structural schemes for the use of the electric drive of the stands when using kx to drive the work rolls during symmetrical rolling are imperfect.

The known drive of the work rolls of the reversing rolling mill for asymmetric rolling with uneven load distribution between the drive motors, each of which is connected to the roller through a gearbox. The drive is equipped with a third, parallel two drive, engine-25

Lem, on the output shaft of which it is movable in the axial direction, installs the gear teeth, alternately interacting with gear wheels rigidly mounted with displacement of one relative to the other on the output shafts of the drive engines i.

The drive works as follows. When rolling at different rolls speeds, one work roll will be more loaded and will rotate at a higher speed. The other k will rotate at a lower speed. When changing the rolling direction, the movable gear will move in the axial direction (automatically) to one of its extreme positions, j, and will work with the gear installed on the output roll / tri-drive motor of the work roll, which will be more loaded.

However, the disadvantage of the known drive was that it does not work at full capacity and is not original enough for the engine, since a third engine is needed for its operation. The aim of the invention is to increase the utilization rate of the installed engines in a reduced number of engines. It is achieved there that the engines are made of different power, the rear ends of the engine shafts are kinematically connected to each other through a gear, and the gear knob is made on the intermediate shaft, on the shaft of a larger engine up to. gear psfedachi and at the rear end of the shaft of one of the engines. The drawing shows a kinematic diagram of the drive of the work rolls of the reversing Rolling mill. The drive of the work rolls 1 and 2 of the mill stand is carried out from the engines 3 and 4. MSS The output shafts of engines 3 and 4 are connected to the working rolls 1 and 2. Respectively through gears 5 and 6. The front ends of the output waps (engines Z 3 and 4 kinematically cBsiaaiiu between them workload mechanism, made in the form of an intermediate shaft 7 connected with the shafts of engines 3 and 4 through the gear pairs 8 and 9, 9 and 10, 11 n 12. The rear axles of the shafts of engines 3 and 4 are kin & matically interconnected through the gear 13i-14-IS. ..,. The drive is also equipped with a switch, made in the form of clutches 16, 17 and 18, installed according to but on the intermediate shaft 7, on the shaft of the engine 3 of higher power up to gearing that gear 8-9, and on the back end of the shaft of one of the engines, for example, the engine of lower power. At the time of the mill, the rolled strip 19 is fixed in the mouths of the winding reels 20 and 21 to passes between the horizontal work rolls 1 and 2 of the stand, alternately wrapping them in. When rolling with different circumferential growths of the work rolls 1 and 2 and with the wrong rolling, Vn is the drive of individual work rollers (clutches 16, 18 are closed). The work roll 1 is more loaded and is driven into rotation from the engine 3 of greater power through the clutch 7 and the reduction gear 5, the work roll 2 in less-; It is routed and driven into rotation from the motor 4 of lesser power through the gearbox 6. When the rolling direction changes, the rolls of the work rolls 1 and 2 of the stand are rigid, ruped (the sleeves coupling is open 17). The drive of work rolls 1- and 2 is dried out from engines 3 and 4, the rear piles of the output shafts of the cottages are connected via gear pairs 13-14, 14-15, and the clutch 18, and their front horses are kinematically connected by gear pairs 8 9, 9-10, 11-12 and a clutch 16 mounted on the intermediate shaft 7. The work roll. 2 is more loaded and has greater speed, while work roll 1 is less loaded and has less speed. The ratio of the surrounding speeds of the rolls is determined by the total gear ratio of the gear pairs 8–9, 9–10, and 11–12. The power of engines 3 and 4 must be chosen from the conditions of operation of the mill drive, both in the individual mode and in the group. . The invention of the invention. The drive rolls of the reversing rolling mill, containing individual motors, gearboxes and a load sharing mechanism between the motors, made in the form of an intermediate shaft connected to the motor shafts through gear pairs, and switch, that, in order to increase the coefficient of utilization of installed powers and decrease the number of engines, the engines are made of different masses, the rear ends of the engines are kinematically connected with each other through a gear train, and reklyuchatel designed as a coupling laziness grapple mounted on the intermediate, more power to the motor shaft, a toothed transmit and rear end of the shaft of an engine. Sources of information taken into account in the examination: 1. USSR Copyright Certificate № 484026, - cl. B 21 B 35/08, 1974.

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