SU410813A1 - - Google Patents

Description

one

The invention / 1E can be used in pipe, ball, rod and other rotating mills intended for grinding various materials, cement cement clinker panrimer, limestone, gypsum, coal, metallurgical ores, etc.

The known drive of the tube mill, containing a motor, a two-stage gear with coaxial high-speed and low-speed shafts and connecting steps-intermediate shafts, has a limited load capacity.

For povyplepi loading snosobnosti nredlagaemogo drive at high-speed and low-speed shafts of both stages are mounted central herringbone gears, which are in zatsenlenii equal amounts chevron and helical gears have schh different direction teeth and meshing different poluschevronami central gear, wherein the herringbone gear of each stage are connected With the help of intermediate shafts with helical gears of the other stage, the helical gears can be fixed axially on the dshipnikah and chevron -smontirovany samoustanavlivayuschimis.

FIG. 1 shows the described actuator, in plan; in fig. 2 - the same, longitudinal section; la fig. 3-porous cut but nerve

steps; ca fig. 4 is a cross section through the second stage.

The drive of the mill contains the main motor 1, the first 2 and the second stage 3 of the gearbox and the auxiliary drive 4. The main engine, the first step of the gearbox and the auxiliary drive are fixedly mounted on the foundation. The second stage casing 5 of the gearbox is suspended on a bearing 6 on a rotating hollow trunnion 7 of mill 8, which is mounted on bearings 9 of racks 10. From turning, the second stage casing of the gearbox is held by a hinged pull And attached to the foundation. The first gear stage contains a central chevron gear 12 with semi-heurons 13 and 14. Two chevron gears 15 and 16 and two helical gears are in engagement with them.

17 and 18, while the gear 17 is engaged with the half-hevron 13, and the gear

18- with semi-hevron 14.

In the first stage of the gearbox in the axial direction, only the shafts of helical gears are fixed on the bearings in the housing 19, and the shafts of the chevron gears in the axial direction float on the bearings.

The second gear stage contains a central chevron gear 20 with semi-euruses 21 and 22, mounted on the pin of the melon. Two sheerone 23 and 24 and two helical gear 25 and 26 gears are in engagement with it, while gear 25 is in engagement with the semi-hevron 21, and gear 26 with the semi-hevron 22.

In the second stage of the gearbox in the axial direction on the bearings in the housing are fixed only the shafts of helical gears, the shafts of chevron gears in the axial direction float on the bearings.

The shafts of the chevron gears of the first stage are connected respectively with the helical gears of the second stage with the help of intermediate shafts 27 and 28.

The shafts of the helical gears of the first stage are connected respectively to the second-stage chevron gears with the help of intermediate shafts 29 and 30.

Intermediate shafts are connected to the shafts of the gears of the second stage with the help of a float, their axially splined joints.

The drive works as follows.

The rotation from the main motor 1 or the auxiliary drive 4 is transmitted by the driving gear 12, where the power is divided into four streams and through chevron gears 15, 16 and helical gears 17, 18 are transmitted to the intermediate shafts 27, 28, 29, 30 and further to chevron gears gears 23, 24 and helical gears 25 and 26.

The rotation of the four threads from these gears is transmitted to the leading (low-speed) gear 20 and connected to the penta 7 and the mill 8.

When a cool moment is applied to the leading chevron gear 12, it is self-mounted in axial direction along helical gears 17 and 18 fixed to the housing 19, which are interconnected by means of the intermediate shafts 29 and 30 and the chevron gears 23 and 24 that were in meshed with obsh, her chevron gear 20.

Thanks to the self-alignment of the leading chevron gear 12, the drying is uniform

load sharing between power transfer branches.

When a torque is applied from the leading chevron gear 12 to the chevron gears 15 and 16, the force is transmitted through the intermediate shafts 27 and 28 to the helical gears 25 and 26, which are axially fixed to the housing 5, self-aligning with the housing 5.

chevron driven gear 20 mounted on the trunnion 7 of the mill 8.

Due to the self-installation of the helical gears 25 and 26 (together with the housing 5 suspended on the trunnion 7), the load is evenly distributed between these power transmission branches.

Thus, due to the presence of self-aligning axially floating elements of the first and second stages

Uniform load distribution is automatically distributed across all branches of single-motion transmission.

Subject invention

1. A tube mill drive containing a motor, a two-stage transmission with coaxial high-speed and low-speed shafts, and intermediate shafts connecting steps,

characterized in that, in order to increase the load capacity of the drive, on the high-speed and low-speed shafts of both stages, central chevron gears are mounted with which they are engaged

equal numbers of chevron and helical gears with different teeth direction and neutral gears that engage with different hemispheres, and the chevron gears of each stage are connected by means of intermediate shafts with helical gears of another stage.

2. Drive on and. 1, characterized in that the helical gears are fixed axially on the bearings, and the shevropic gears are mounted self-aligning:, imis.

i9

FIG. 2

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sixteen

nineteen

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8-B.

26

20

Fi, g.