CZ279767B6 - Satellite branched gearbox - Google Patents

Abstract

The satellite branched gearbox is solved as a three-speed device where the first speed is formed by a double geared central wheel (1) and two geared satellites (2) and the second gear speed by two double geared central wheels (3) and four geared satellites (4). The third gear speed is then formed by a central wheel (5) and four geared pinions (13). The bearing shafts (12) of the geared satellites (2) of the first gear speed, pivoted in the central dividing plane (S2) of the gearbox (14), are differential couplings (8) joined in a manner where they can shift, rotate, be fixed or be torsion flexible with the double geared central wheels (3) of the second gear speed. One of the geared satellites (2) of the first gear speed is tangentially adjustably solidly joined by the first locking clutch (6) with the adjacent bearing shaft (12) and at least two of the geared satellites (4) of the second gear speed is tangentially adjustably solidly joined by the second locking clutches (7) with the adjacent satellite shafts (11).<IMAGE>

Description

Technical field

BACKGROUND OF THE INVENTION The present invention relates to a satellite bifurcated gearbox, particularly intended for speed reduction in an overall transmission ratio, comparable to the range of conventional three-speed gearboxes used for cement plants, cane mill drives, rolling mills, and the like.

BACKGROUND OF THE INVENTION

Until now, for the drives of cement rotary mills, cane mills, rolling mills, etc., mainly spur gears or planetary gears are used. For transmitting higher power these gearboxes are shifted in parallel and the final gearbox is designed as an open gear transmission. For central drives, two-speed gearwheels with toothed rim or three-speed spur gearboxes with two drive motors branched into one output shaft or two-speed planetary gearboxes, mostly with three planets, either with rotating crown wheels or rotating satellite carriers are used. . In case of parallel shifting of planetary gearboxes these are solved as single-stage. Also known is a three-speed satellite transmission with two groups of spur gears, where each group is rotatably fixed to one double sun gear. Each double sun gear is then permanently engaged with the two satellite gears, which are rigidly connected to the pinion gears engaging the sun gear of the output shaft via support shafts. The disadvantage of central transmission gearboxes is their limited ability to transmit higher power. In two-stage asteroids, the transmitted power is divided into three planets, everything in the planets rotates, either a crown wheel or a satellite carrier. All parts are bulky and heavy, which has a negative effect on the smooth running of the gearbox. Parallel gear shifting requires an open gear with a large ring gear. Due to the placement of the ring gear on the drum of the cement mill and the gear pinion engaging therein, mounted in separate bearings, very frequent failures occur in this case. The parallel shifting of the gearboxes also places considerable demands on the built-up area. The disadvantage of the three-speed satellite gearboxes is the uneven arrangement of the four sprockets, which are in permanent engagement with the central gear of the output shaft, which is thus subjected to considerable radial force.

SUMMARY OF THE INVENTION

The above-mentioned disadvantages are overcome by the satellite bevel gear transmission, which is characterized in that the double toothed sun gear of the input shaft mounted rotatably in the central division plane of the gearbox is permanently engaged with the first-gear toothed satellites whose supporting shafts rotatable In the plane of the gearbox, they are connected by sliding rotationally and torsionally resiliently to the double gears of the second gear by means of compensating couplings. With these double-toothed sun gears, geared satellites, fixed on one

The two ends of the satellite shafts, two of which are mounted rotatably in the upper and two in the lower division plane of the gearbox. The second ends of the satellite shafts are provided with third gear stage pinion gears that are in continuous engagement with the output shaft gear sun gear rotatably mounted in the central division plane of the gearbox. One of the toothed satellites of the first gear is then fixed tangentially to the adjacent support shaft by a first locking coupling. At least two of the toothed satellites of the second gear are tangentially rigidly connected to adjacent satellite shafts by the second locking couplings.

The advantage of the satellite bevel gearbox according to the invention is that it permits even distribution of the transmitted power across all branches of the kinematic chain and does not require the insertion of torsionally flexible connections to achieve stereostatic certainty. The uniform distribution of the transmitted power is made possible by the bearing of the input shaft and the supporting shafts with the double gears of the first and second gears in the bearings, enabling not only radial and axial movement and thus perfect positioning of the double gears. gearing. The solution further guarantees the assembling of the gears for any transmission of all three gears for any real axial distance of the first, second and third gears.

Overview of the drawings

The satellite bevel gear according to the invention is shown schematically in FIGS. 1 to 3 of the accompanying drawings, for example. Giant. 1 is a spatial kinematic diagram of the transmission gears and FIG. 2 is a front kinematic diagram of the transmission. Giant. 3 is a cross-sectional plan view A-A of the transmission intersected by satellite shafts and a central transmission plane.

DETAILED DESCRIPTION OF THE INVENTION

Satellite branched transmission with three divisions δ ^,

A _{3 of the} gearbox 14 (FIG. 3) has three gears. It can be seen from FIG. 1 that the first gear stage consists of a double gearing sun gear 1 and two helical gears 2 and a second gear stage with two double gears sun gear 3 and four helical gears 8. toothing. The third gear stage then consists of a direct toothed sun gear 5 and four direct toothed pinion gears 13. As can be seen from FIG. 2, the double toothed sun gear 1 of the input shaft 9 mounted rotatably in the central division plane δ _{12 of the} gearbox 14 is in permanent engagement with the toothed satellites 2 of the first gear. These toothed satellites 2 are then mounted on support shafts 12 mounted rotatably in the central dividing plane δ _{2 of the} gearbox 14, which are connected by sliding rotationally rigidly and torsionally resiliently to the double toothed gears 8 of the second gear via compensating couplings 8. With the first gears of the double sun gears 3, the toothed satellites of the satellite shafts 11 are rotatably mounted in the upper separation plane of the gearbox 14 and with the second toothed gears 4 of the satellite shafts 11 rotatably mounted in the lower separation plane 8. The second ends of the satellite shafts 11 are then provided with third gear stage pinion gears 13 which are in permanent engagement with the output gear 10 of the output shaft 10 rotatably mounted in the central division plane δ_ _{2 of the} gearbox 14. The first gear stage 2 is tangentially connected to the adjacent support shaft 12 by a first locking clutch 6. Two of the second gear gear 4 are tangentially connected to the adjacent satellite shafts by a second locking coupling eli 11.

The rotationally rigid and torsionally resilient coupling of the first and second gear gears 2 and the second gear second gears offsets the gears and allows the gears to be produced on these gears 2 and the double gears 3 without any kinematic linkage to each other. The simple assembly of the satellite branched gearbox is then ensured by the possibility of a continuous tangential adjustment of one gear satellite of the second gear and two gear satellites of the second gear.

-3GB 279767 B6

PATENTOVÉ

Claims

Claims (1)

Claims A three-sectional satellite branched transmission comprising rotatably mounted double gears, gears, gears and a sun gear, characterized in that the double sun gear (1) of the input shaft (9) rotatably mounted in the center parting plane (s ₂₎ of the gear housing (14) is in permanent engagement with the toothed satellites (2) of the first gear, the support shaft (12) rotatably mounted in the middle parting plane (8 ₂₎ of the gear housing (14) are by means of compensating couplings (8) they are connected in a rotationally rigid and torsion elastically movable manner to the second gear wheels (3) of the second gear, with which the toothed satellites (4), which are fixed at one end of the satellite shafts (11) two of which are mounted rotatably in the upper and two in the lower dividing plane (δ _{( 3} ) gear boxes (14) and the other ends of which are provided with third pinion gear (13) which are permanently engaged with the output gear (5) sun gear (5) rotatably mounted in the central separation plane ( δ ( ₂ ) a gearbox (14), wherein one of the toothed satellites (2) of the first gear is then tangentially rigidly coupled to the adjacent support shaft (12) and at least two of the toothed satellites (4) of the second gear the steps are tangentially rigidly connected to the adjacent satellite shafts (11) by the second locking couplings (7). 3 drawings -4GB 279767 B6