JPS5838609A - Driving device for roller leveller - Google Patents

Abstract

PURPOSE:To prevent a driving system from the generation of torque due to a circulating power, by installing a sun and planetary gear mechainism between a group of pinion gears, rotating work rolls reversely to each other, and a driving motor, and providing a restricting means of maximum torque to a sun gear of the mechanism. CONSTITUTION:For instance, when the 1st group of groups of pinion gears 9a- 9d, 9e-9h and 9i-9k is smaller in diameter than the other groups, the generation of torque due to a power circulation is prevented by increasing the rotating angle of the group of rolls of small diam. This purpose is achieved by clockwise rotating a sun gear of a sun and planetary gear mechanism placed between a driving motor 1 and gear groups 9 by the action of hydraulic cylinders 17a and 17b which hold an arm 16. Then the cylinders 17a and 17b are controlled so as to return the arm 16 to the original position after a passing through of a material to be rolled.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a roller drive system suitable for use in a roller leveler used to eliminate local distortion of a steel plate after compression and improve flatness.

Hot or cold compression tM, round steel 4N is usually treated with a roller leveler TF for the purpose of removing local distortions that occur during the compression process.
As shown in FIG. 1, the 0-roller repeller used for straightening is equipped with a minimum of five or more steel rollers arranged in a staggered manner in two rows, one above the other.
As the plate 102 undergoes bending processing in opposite directions alternately, the stress distribution becomes uniform and eliminates local distortion of the plate 102, in other words, the repeated application of the stress 103Fi butterfly up roll, 1
04 company housing! , 105 is a roll lowering device, and 106 is a balance cylinder.

The driving of this roller leveler has conventionally been carried out using a driving device shown in FIG. Tsumashi, each work four-le 101
is a universal joint 107. Spindle 1089, pinion gear 109 of equal age, 3-distribution gear 110. Destruction gear 111
The work roll 101tj is driven by one or more motors 112, but the work roll 101tj often wears out gradually as the usage time O increases, and the amount of roll reduction on the entrance and exit sides is large. As a result, the amount of wear on the rolls is different, resulting in a difference in the straightness of the rolls.Moreover, since the coefficient of wear between the steel plate and the roll is large, slipping cannot occur between the two, and large-diameter work rolls that are in contact with the same steel plate. There is a slight difference in the ore excitation angle due to the jump between the work roll and the small diameter work roll. This difference in rotation angle accumulates and increases in proportion to the number of rotations until the steel plate passes through, and acts as a screw torque in the drive system, so the drive system has a certain amount of power circulation in addition to the normal required torque. It will receive the called torque. If the steel plate is thick and long, the torque due to the power circulation mentioned above will be 11 times the normal torque! It reaches from L times to Shizu times.

Therefore, when designing mechanical parts, it is necessary to include torque due to power circulation in addition to the essential required torque, which poses a problem that the machine becomes large and expensive. Therefore, in the past, each component was generally designed with a safety factor of t, t + IJ, and several times the normal cost torque.
In order to protect the drive system against overload caused by power circulation, a safety device, for example, a shear bin designated by the reference numeral 113 on the Rikki 2IIA, was installed to protect the drive system. However, the overload safety device of the Jin-o-shabin type is difficult to adjust, and the cutting torque setting and operation are unstable, and it needs to be replaced regularly due to fatigue. It takes a lot of time and manpower to replace it! ! The e-book version has some drawbacks! j1 was made to eliminate the above-mentioned drawbacks, and aims to provide a roller leveler drive device that can prevent the generation of screw torque in the drive system due to circulating power. The component of the present invention is a roller repeller drive device that distributes rotational power from one or more O drive means and introduces it to a pinion gear I# provided for each work roll. A planetary gear mechanism is installed between the pinion gear group and the drive means, and a means for applying the maximum torque tm of the drive system to the shaft of the thick wheel of the planetary gear mechanism. Structure of the invention - shown in FIGS. 3 to 5! J
1jAfPiKIIIs will be explained in detail. 〇 Work rolls 101 #i, II which continuously apply repeated and opposite deburring processes to steel plates.Similar to the conventional roller leveler shown in Fig. 1, the work rolls are arranged in two rows, upper and lower, in a staggered manner. , are connected to pinion gear groups 9a to 9k each having an equal number of teeth via shafts 15i provided in universal joints 14 at both ends, and are provided so as to receive power transmission while moving up and down. The pinion gears 9a to 9 are provided with a drive motor l which is provided on the work rolls 101Lf6 and rotates the upper and lower work rolls l0IQ once in opposite directions to feed the steel plate sandwiched between them in one direction. The drive motors 1 and 1' are respectively connected to an idler gear unit 3.3' via an inadvertent gear train 2.2'i, and are further connected to an output shaft of a planetary gear mechanism 3.3I. M7.7' is pinion gear $P9a~9 and one gear 9a and 9h of 9.~9h.
・It is connected to the driving gear 1, 11 and pinion gears #91 to 9d and 9 to 9h.

On the other hand, pinion gears #91 to #9 and drive motors 1 and II
is the ring gear 6.6 of the planetary gear set 3.31 mentioned above.
′ and the other intermediate gears 11,
12.131- connected via.

Work roll 101sea on the entry and exit sides of the roller repeller
Each vinyl on gear to be rotated #91~9d and 9.~9h
K@turning t@crossing play J111m wheel device 3゜3''t!, ring gear 6.6' with internal teeth and external gear, sun-fu 4,
4', the wheel of the thick @ car 4, 46 The three idle jLllll cars that make one lap while revolving 5.51 and these three idle J
llllll wheel 5.51 and arms 7, 7 @ which function as output shafts), give one rotation of the drive motor l to the ring gear 6.61, and at the same time give one rotation to the sun gear 4 * 4'. By making it function as a differential wheel mechanism, the input side and exit side pinion gears j#11a to 9 (l e 9@-111h) are
It is possible to change the O11 rotation angle.・The sun-wheel 4
e 4'L An arm 16.16 is fixed to its shaft end, and the arm 16.16'' is connected to a pair of upper and lower fluid pressure cylinders (cylinders that use pressure oil or compressed air as their working fluid)
17m, 17b, 17c, and 17a are clamped and fixed so that they can rotate at will. Under normal operating conditions, if the hydraulic cylinder 17a = 174 is connected with a hydraulic pipe corresponding to the torque required for normal repeller operation, and the arms 16, 16'j are fixed, thick * thin car 4゜4
' is fixed and rotation is given by the arm 7.71.One rotation is made by the intermediate gear 10 circumscribing the input and exit pinion gear groups 9a to 9 (1°9e to 9 hills and the ring gear 6.6@). The central pinion gears f#91 to 9 rotate once at a constant speed, but in an abnormal state, the fluid pressure cylinders 17a = 17d [operate and the sun wheel 4, 4'tf
By turning the car 4.41
The central pinion gear #9 makes a constant rotation regardless of the rotation of the
Inlet and outlet pinion gear #9a for 1 to 9k
~9cl.

The roller leveler drive device of this embodiment configured in this way changes the number of rotations per rotation from 98 to 9 hours.
First, when the diameters of the work rolls 101 are equal (see M in Fig. 4 (a)), when each roll starts from point M and point B and rotates once, the original The rotation angles of the workpieces 9 and 101 are 360°, respectively.
When the diameter of the roll is not strong and no slip occurs between the roll and the steel plate (see Figure 4 (1)))
When returning to the original point after 60 rotations, the small diameter roll does not generate torsional torque (360 @ 10cX).
However, since the gears are actually meshed, it can only rotate up to BiF&, so the roll drive system requires 111 lbs of power, which is equivalent to slightly twisting the drive system.
j) Therefore, the small diameter p-
Power circulation torque will not occur if the work rolls of the pinion gear groups 91 to 9d are rotated more times (rolls with larger diameters than the other pinion gears IP9 e to 9h and 91 to 9 If the work roll diameter is also small, the generation of power m1i) can be prevented by increasing the rotation angle of the small diameter roll group as explained in FIG. For this purpose, the arm 16t - the clamping hydraulic cylinder 1
7a and 17b, the solar vehicle 4t may be temporarily rotated in the ith rotation direction V. Then, when the pressure Im@('i14 plate) passes, the fluid pressure cylinders 17a and 17btl are controlled so that the arm 16 returns to its original position. Another method is to keep the arm 16 stationary until the sum of the normal torque and the torque due to power circulation corresponds to the safe use torque of the drive device, and when the safe use limit torque is exceeded, In order to prevent damage to the leveler drive system, the pressure is detected by the hydraulic pressure of the Fε cylinders 17a and 17b, and the leveler roll is released by the emergency reduction blade release of the unjamming cylinder. It can be prevented. In addition, the thick ram axle KU, the freewheeling ms vehicle [3, 3' to transmit the power, the solar wheel 4.41 and the freewheeling mri wheel 5
, 5' is acting on the meshing surface with 1 pressure cylinder 171L~1.
7 (IKtf Hydraulic pressure corresponding to this torque is applied to keep the sun thin axle stationary. 9 As another example of the means for determining the maximum torque km of the drive system, the one shown in Fig. 5 is shown. 0 This example company, an overload safety clutch such as a powder clutch 20° 201 between the drive sweater and the sun thin axle, and a speed increasing gear example 18.19
@18', 1G' is provided, and when an overload is applied, the powder clutch 20° 201 part slips. 0 If the safe use torque is exceeded, the powder clutch 20°2
When the arm 7.7I is activated and the rotation of the arm 7.7I is stopped, an operation detector (not shown) is linked to the unjung cylinder.
[It is also possible to release the reduction blade by operating it.

Incidentally, in the 51st example, the structural parts 34 other than the 0-axis end of the sun wheels 4 and 4' are the same as those of the embodiment.

As mentioned above, Ki-ni f! # is the work roll of the leveler [a planetary gear mechanism [installed between the pinion gear group that alternately rotates in the opposite direction and the drive motor]
A means for applying the maximum torque tm of the drive system to the shaft of the sun gear of the wheel mechanism. By releasing the rolling blade, it is possible to eliminate the number of meters in the drive system. As a result, the power differential torque can be reduced or eliminated, so the entire drive mechanism can be designed to be smaller and lighter, making it more economical.In addition, it is possible to reduce or eliminate the power differential torque, making it economical to design the entire drive mechanism. In addition, a detector tube is built into the maximum torque limiter, and this and an emergency pressure release device [
By interlocking, damage to the leveler can be prevented.

[Brief explanation of drawings]

The figure is a schematic diagram of a roller leveler [Show @ side view, 112
The figure is a plan view of a conventional roller leveler drive device, FIG. 3 is a perspective view of a roller leveler drive device of the present invention, and FIGS.
C) is an explanatory diagram showing the relationship between the work roll diameter difference and 4a9 of the drive system, and Figure 5 is a perspective view showing another embodiment of the roller repeller driving device. 4.41 is a sun gear , 5 e 5"&i free jLtII car, 6.6' is the ring gear, 7, 7'& i arm, 91~9 are the company pinion gears, 10 is the intermediate gear, 16 #1 @'#i arm, iya~1711 is Fluid pressure cylinder, 20.20'Fi powder clutch, Fig. 1

Claims (1)

[Claims] In a roller repeller drive device that distributes rotational power from one or more drive means and introduces it to a group of pinion gears provided for each work roll, A roller level drive characterized in that a single planet is installed between the group and the drive means, and a means for limiting the maximum torque of the drive system is installed on the shaft of the sun gear of the planetary writing mechanism. Equipment O