SU1404771A1 - Rotary furnace drive - Google Patents

Description

(21) 4P6037 / 29-33

(22) 06/30/86

(46) 06.23.88. Bul No. 23

(71) Lviv Polytechnic Institute. Lenin Komsomol

(72) V.T. Pavlische, I.V. Kuzio, A.A.Kychma and V.A.Pashisty

(53) 666-94.041 (088.8)

(56) USSR Author's Certificate No. 1210040, cl. F 27 B 7/26, 1984.

Author's certificate of the USSR № 330322, cl. F 27 B 7/26, 1967.

(54) DRIVE OF ROTATING FURNACE

(57) The invention relates to mechanical engineering and can be used.

in the cement, chemical and metallurgical industries. The aim of the invention is to increase the reliability of the drive rotating

ovens. The crown gear G is connected to the furnace body 7 by means of an intermediate compensating device, and the angle between the lines connecting the center of the ring gear 1 to the centers of the supporting rollers is 90 oi, where (L is the angle of engagement of the teeth of the crown pair. Intermediate compensation the device is made in the form of a floating ring 6 with two pairs of grooves, the grooves of each pair are diametrically opposed and in two mutually perpendicular planes. The grooves are placed movably with a radial clearance protrusions one pair of which is located diametrically opposite on the ring gear 1, and the other on the furnace body 7. 3 sludge.

WITH

and

: .Е1 ...

J

-four

The invention relates to mechanical engineering, primarily to the building materials industry, and is intended for use in the ovens.

The purpose of the invention is to increase the reliability of the drive of the rotary kiln.

Figure 1 shows the drive; rotate the furnace; figure 2 - section aa in figure 1; on fig.Z - section BB in figure 1 ..

The drive of the rotary kiln comprises a crown gear 1, consisting of a rim 2 and separate gear sectors 3 fixed on the rim, a gear 4 which is in engagement with the ring gear 1 and located on the drive shaft 5, as well as a device made in the form of a floating ring b with grooves and installed-j new between the crown gear and the furnace body 7. The crown gear 1 is located on the support rollers 8 and 9, which have supports 10 and P fixed to the foundation 12. One of under The holding rollers 8 are made in conjunction with the toothed gear, the diameters of the supporting rollers 8 and 9 are equal to the pitch diameter of the pod gear 4, and the diameter of the cylindrical surface of the rim 2 that is in contact with the supporting rollers 8 and 9 is equal to the pitch circle diameter of the crown gear wheels -1,

In the compensating device, the floating ring 6 has two pairs of grooves which are diametrically opposed and in two mutually perpendicular planes. The ring gear 1 has one pair of protrusions 13 and 14, and the furnace body 7 is another pair of projections 15 and 16, which are diametrically opposed, respectively, on the ring wheel 1 and on the furnace body 7. The tabs 13 have 16 of the ring gear 1 and the body The furnaces 7 are placed in the grooves of the floating ring i 6 movably and with a radial clearance. There are stops 17 and 18 on the projections 15 and 16 located on the furnace body 7, limiting the axial movement of the floating ring 6 relative to the furnace body 7.

In addition, in Fig. 1, G is the force of the body of the crown gear 1; F is the interaction force of the teeth of the Vendian gear 1 and the pod gear 4; R and R are the reaction forces acting from the side of the supporting rollers 8 and 9 on the ring gear 1; 2 is the angle between the straight lines connecting the center of the ring gear 1 with the centers of the supporting rollers 8 and 9; about - the angle of the teeth.

The rotary kiln drive works in a dim way.

The rotation from the drive shaft 5 is transmitted by means of a paddle gear 4 to the ring gear 1, which is held in a certain polishing state by the supporting rollers 8 and 9. A compensating device connects the ring gear 1 and the furnace body 7.

The furnace body 7, when rotating, makes vertical, lateral, angular and axial movements caused by bending of the axis of rotation of the body, ellipse of the tires and support rollers, thermal deformations, inaccuracies of installation, etc. All these movements are performed on the crown gear 1 is not transmitted. The compensation device, made in the form of a floating ring 6 with two pairs of grooves, can only transmit torque, since it is constantly balanced by two pairs of forces applied from the side of the pair of projections 13 and 14 of the ring gear 1 and the side of the pair of projections 15 and 16 located on the furnace body 7. When the furnace body 7 is displaced to the left or right, the floating ring 6 moves relative to the projections 13 to 14 on the ring gear 1 due to the radial gaps between the projections 13 and 14 and the slots on the water yuschem ring 6.

If the furnace body 7 is shifted towards or below, the floating ring 6 remains stationary relative to the ring gear 1, and the projections 15 and 16 on the furnace body 7 move in the grooves of the floating ring 6 due to the presence of radial gaps. Thus, the furnace body 7 can make independent movements with respect to the fixed position of the ring gear 1 in two mutually perpendicular directions or in any arbitrary direction. In this case, the crown gear 1 is not removed from the supporting rollers 8 and 9, and the furnace body 7 is not further bent.

The presence of radial gaps between the protrusions on the furnace body 7 and on the ring gear 1 and the slots of the floating ring 6 allows the furnace body 7 to also make angular displacements in two mutually perpendicular planes relative to the ring gear 1.

With axial displacement of the furnace body 7, the projections 13 and 14 of the Vendan gear 1 move along the slots of the floating ring 6, which is fixed in the axial direction by the stops 17 and 18.

The moment of a pair of forces, to prevent the separation of the crown gear 1 from the supporting rollers 8 and 9. attached to the crown gear 1 from the side of the floating ring 6, must be balanced by another moment of the pair of forces applied to the crown gear 1 from the side. the gear wheel 4 and the support rollers 8 and 9. Such a pair of forces is formed if the engagement line along which the force F acts is parallel to the line connecting the center of the ring gear with the center of the support roller 9. In this case, the angle 2 The distance between the straight connecting center of the ring gear 1 with the centers of the supporting rollers 8 and 9 is equal to 90 oi, where oi is the angle of engagement of the teeth, which in gearing is 20,

The required ratio is 2J -90 -t-ei. can also be established by creating equilibrium conditions for the ring gear 1. Designing forces on the vertical and horizontal axes, get the following equations:

R, cosjp + R cosJ-F sin (y-Y-) - RiSinJC - RjSiny F cos (J-6i) 0

Solving these equations for R (and Rj, have

R.

GF i2i-of).

Zcosjfsin 2J 2

G

+ F S ° E. sinj

V

10 15

20

25 30 40

45 0

five

Negative reaction component R (determines the possibility of separation of the crown gear 1 from the support roller 8, This component is equal to zero at 2 J - oi 90 or at 2 V .90 ° + oi. In this case, reliable contact of the crown gear 1 with the support rollers B and 9 is achieved by the force of the grip of the wheel G.

At 2 J 90 ° + about force F additionally presses the ring gear 1 to the supporting rollers 8 and 9, thus there is an unjustified increase in the loads on the supporting rollers 8 and 9.

The proposed rotary kiln drive has a simplified design, since it does not contain auxiliary rollers that hold the ring gear 1 on the support rollers 8 and 9, and the use of a simple in design compensatory device does not cause additional bending of the furnace body 7 and the gear teeth. The proposed choice of angle between the straight lines connecting the center of the ring gear 1 to the centers of the supporting rollers 8 and 9 ensures a stable position above the ring gear 1 and during operation of the drive. All this increases the reliability of operation of the rotary kiln drive and provides savings in the national economy.

Claims (1)

Invention Formula A rotary kiln drive containing a crown gear located around the kiln body mounted on supporting rollers mounted on the foundation and connected to the kiln body by means of a compensating device, as well as a landing pin that is in engagement with the ring gear and mounted on a common shaft with One of the supporting rollers, characterized in that, in order to increase the reliability of operation, the compensating device is made as installed between the ring gear and the body of the floating ring furnace with grooves diametrically opposed in mutually perpendicular planes, and the crown gear wheel and the furnace body are made with a pair of diametrically protrusions, timesA-A J r fjfjffjTMrfii mnrfifff MnrArf fMffarffffff ffmf ffff .2 1404771 placed in the grooves of the floating ring - the angle between the lines, connecting the center of the crown wheel with the center of the supporting rollers, is 90 + oi, where ot is the angle of engagement of the teeth of the wedding gear and the crown gear. 5-6 % / e.J