SU1021467A1 - Roller-plate mill drive - Google Patents

Abstract

DRIVE VALKOVO-TARELA - CHATOY MILL, comprising a two-stage reducer motor, 1bc | 1 single-stage gear unit connected to an electric motor, and a low-speed stage in the form of a planetary gear unit connected to a grinding plate, about one liter in the form of a planetary gear unit. and in particular, with the fact that there is no single transmitted power and a reduction in the overall dimensions of the amphibian system, in terms of a single step. gearbox is made in the form of a planetary gear and coaxially installed with a low-speed step, while on the plate is made with a central hole and the electric motor is placed over the grinding plate and is connected via an intermediate shaft located in the central hole of the flap to the sun gear of the high-speed stage. 2. Drive pop. 1, it is different from the fact that the sun gear of the low speed gearbox is made with a central hole, and the fast speed gear is located under the low speed gear and the shaft of its sun gear is placed in the central gear O1 of the sun gear of the low speed gear. 3. The drive according to claim 1, I distinguish Ts. And with the fact that the high-speed gear stage is placed above the grinding mill. i od

Description

The invention relates to mechanical engineering and can be used in grinding aggregates for grinding various brittle materials, for example, eeTHTHsaca, coal, ore, cement clinker and other materials in various industries: cement, energy, mining, construction, chemical. The drive of the roller mill for the cement industry is well known, which contains a conical or cylindrical single-flow gear reducer and a horizontal drive electric motor i. A disadvantage of the known drive of the roller mill is that it is. It is designed for limited unit and transmitted power and performance due to the low load capacity of single-flow bevel gears. The highest limiting transmitted power of the drive is determined by the conic gear, which has a low limit {carrying capacity, the further growth of which is impossible. In addition, the use of the greatest width of the crown requires high precision manufacturing, otherwise reliability and dolt, transmission shit is reduced. In addition, the use of cylindrical and conical single-flow gears and horizontal electric motor j in the radial directions relative to the supporting plate in the reducer significantly increases the area occupied by the mill in plan. The closest to the invention in its technical essence is the drive of a roller-nut mill containing an electric motor, a two-stage reducer, the high-speed stage of which is connected to the electric motor ia made in the form of a planetary front low-speed stage by means of a carrier connected to a grinding plate 21. The known drive has a low one grandchild; transmitted power and performance determined by the limited limiting load-carrying capacity of a single-flow bevel gear. The maximum limiting power transmitted by a single-flow bevel gear with circular teeth is limited by the fact that gears cannot have a crown width greater than 200 mm, moreover, in the presence of a horizontal electric motor, set by the longitudinal axis radially relative to the support-gear case of the mill, it increases The area of the mill in the plan. The purpose of the invention is to increase the unitary transmitted power and reduce the overall dimensions of the mechanism in the plan. This goal is achieved by the fact that, in the drive of a roll-disc mill. of a motor containing a two-stage gearbox, whose high-speed stage is connected to an electric motor | ,: a low-speed stage made in the form of a planetary gear is connected with a grinding plate by means of a carrier, the high-speed gearbox stage is made in the form of a planetary gear and coaxially installed with a low-speed stage, the grinding plate is made with a central hole, and the electric motor is placed above the grinding plate and by means of an intermediate The shaft, located in the central hole of the plate, is connected to the sun gear of the high-speed stage. The sun gear of the low speed gearbox stage can be made with a central hole, while the high speed gear stage is located under the low speed power belt and its sun gear shaft is “og. . i is located in the central hole of the sun gear of the low-speed stage. In addition, the high-speed gear stage can be placed above the grinding plate. FIG. 1 is a schematic vertical view of a wagak-trailed mill, in which a two-stage coaxial planetary gearbox is located under the grinding plate, and the vertical electric motor is mounted on the upper part of the mill housing, section; in fig. 2-4 are variants of kinematic schemes of a two-stage coaxial reducer with several power transmission streams located under the reference gauge; Fig 5 is a vertical roll mill of a mill in which a low-speed coaxial planetary gear stage is located under the grinding plate, and a high-speed gear stage with a vertical electric motor is installed on the upper part of the mill housing; b - the grinder of the kinematic scheme of a low-speed sor1 of a multi-stream gear stage located under the grinding plate. 310 The mill (Figs. 1-4) contains small rolls 1, a grinding plate 2 with a vertical axis of rotation, a drive vertical motor 3, and a coaxial two-stage multi-flow reducer 4 that kinematically connects the electric motor 3 to the plate 2 of the mill. The gearbox 4 is installed under the ramol plate 2 and is connected to the electric motor 3 via an intermediate shaft 5 passing in the central hole of the grinding plate 2. The electric motor 3 is mounted on the upper part of the mill 6. The gearbox 4 (Fig. 1) contains two planetary stages — an immobile 7 and a low-speed 8 connected in series, with the high-speed stage located below the low-speed stage 8. The sun gear of the high-speed stage is connected to the electric motor 3 by means of an intermediate shaft 5 passing through the central hole sun gear low-speed stage and drove low-speed stage 8 is connected with the grinding plate 2.. The gearbox 4 (figure 2) contains a high-speed multi-channel) flow stage 9 with intermediate gears and a quiet-speed planetary stage 1O with satellites, while the high-speed stage is located below the low-speed stage 1O Solar gear high-speed stage 9 is connected to an electric motor, and the low-speed stage 1O - with a grinding plate .2. Gearbox version 4 (Fig. 3) contains two closed coaxial rows 11 and 12: high-speed row 11 - differential with satellites, low-speed row 12 multi-threaded with a gear: precise gears; the high-speed range 11 is located above the low-speed range 12. The solar gear of the high-speed range 11 is connected to an electric motor, and the crown gear of the low-speed range 12 is divided by grinding plate 2, while the crown gears of the rows are connected to each other. The variant of the gearbox 4 (FIG. 4) contains two closed coaxial rows 13 and 14: a high-speed row 13 —differential with satellites; low-speed range 14 - planetary with satellites; the high-speed row 13 is located above the low-speed row 14. The solar gear high-speed row 13 is connected to the electric motor, and the driver of the low-speed row 14 is connected to the plate 2, while the corona of the high speed gear 13 is connected to the carrier of the low-speed 14 An embodiment of the mill {FIG. 5 and 6) contains the grinding rolls 1, grinding plate 2 with a vertical; axis of rotation, drive vertical motor 3, gearboxes: high-speed and low-speed 15 and 16, kinematically connecting the motor 3 to the grinding plate 2 mills. The gearbox of the low-speed stage 16 is installed under the grinding plate 2, the electric motor 3 with the gearbox of the high-speed stage 15 is mounted on the upper part of the mill 6. The gearbox of the low-speed stage 16 (FIG. 5) is made planetary, it is driven 17 connected to the plate 2, and the sun gear is connected to the gearbox of the high-speed stage through the intermediate shaft 18. The gearbox of the high-speed stage 15 can be made cylindrical single-threaded coaxially double-threaded or planetary. The installation under the grinding plate of only a low-speed gearbox stage makes it possible to reduce the elevation of the location of the power grinding bodies (support point and grinding rolls) relative to the basement of the mill. An embodiment of the gearbox of the low-speed stage 16 (Fig. 6) is made in the form of a multi-threaded coaxial transmission with intermediate gears, the crown gear 19 of which is connected to the plate 2. In the case of a more high-speed electric motor in the slower mills, it is possible to implement the gearbox with three degrees. (instead of two degrees). In the operation of a roll-plate mill (Fig. 1), the rotation and torque from the electric motor 3 are transmitted through the intermediate shaft 5 to the sun gear of high-speed stage 7, then through the carrier stage 7 to the co-gear pinion stage 8, then through the carrier Steps 8 rotation and torque are transmitted to the plate 2 of the mill. The transfer of power (torque) through the high-speed and low-speed planetary 7 and 8 gear 4 is carried out by several (two and more) flows,

which is determined by the number of satellites in each of the stages.

According to the number of power transmission flows, the unit transmission power and productivity of the mill | which allows you to improve the efficiency of the mill and technical and economic indicators. Application in gearbox only

cylindrical gears (instead of a bevel gear in the first stage, it allows to increase the load capacity, reliability and durability of the drive, as it is limiting; the load capacity of the cylindrical gear is several times higher than the load capacity of the bevel gear. Due to the fact parts of the mill housing, reduces the area in the plan occupied by the mill, and this, in turn, reduces the cost of buildings and facilities.

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Claims (3)

DRIVE OF A ROLLER-CABINET MILL, containing an electric motor, a two-stage gearbox, a high-speed stage of which is connected to an electric motor, and a low-speed stage made in the form of a planetary gear is connected by means of a carrier to a grinding plate, about t l. and h. and with the fact that, in order to increase the unit transmitted power and reduce the overall dimensions of the mechanism in plan, a high-speed step. the gearbox is made in the form of a planetary gear and coaxially mounted with a low-speed stage, while the grinding plate is made with a central hole, and the electric motor is located above the grinding plate and, via an intermediate shaft located in the central hole of the plate, is connected to the sun gear of the high-speed stage. 2. Drive pop. It is distinguished by the fact that the sun gear of the low-speed gear stage is made with a central hole, and the high-speed step is located under the low-speed stage and the shaft of its sun gear is located in the central hole of the sun gear of the low-speed stage. 3. Drive on π. 1, distinguished by the fact that the high-speed gear stage is located above the grinding plate.