Gear, coaxially with multi-threaded transfer
(57) Abstract:Usage: engineering. The inventive gear coaxially with the threaded transmission comprises a drive shaft with pinion, output shafts with opposite rotation, parasitic and idler. The last set alternating in the circumferential direction between the two groups. Idler one group dvuhventsovye, another group odnovintovye. The latter is installed in the gap between the crowns dvuhventsovye intermediate gear overlap. Idler groups interconnected by torsion. Parasitic gear installed in the circumferential direction on the side of the intermediate gears and connected with them. 2 C.p. f-crystals, 4 Il. The invention relates to reductionstrategy and can be used for power transmission from the drive shaft through the reduction gear on two coaxial output shafts.Known coaxial threaded reducer differential type with two output shafts, rotating during operation in opposite directions 
The drawbacks of such a differential gear unit are:
the inability to obtain permanent, equal or different numbers about the new transmitted power via output shafts;
reduced reliability and durability of the differential gear in comparison with the work of a simple gear due to high dynamic loads and uneven loading of the satellites.Known multi-threaded reducer dedifferentiated type for two coaxial counter-rotating screws  comprising a housing, a drive shaft with a pinion, three series of intermediate gears mounted on three gears on each shaft, and one row of parasitic gears mounted radially between the intermediate gears of the same number and a driven toothed wheel. The intermediate gear one series geared with the pinion, idler another series with the driven toothed wheel connected to the inner output shaft and screw, and an intermediate gear of the third row with an idle gear, which is meshed with the second driven gear wheel connected to the outer output shaft and the rear screw.The drawbacks of such gear are:
the limit obtained numerical values of the transmission ratio gears on each output shaft and their speeds of rotation due to the installation promezhutochnoi with the pinion of the drive shaft;
reduced reliability and durability multi-threaded gear in comparison with the work of a simple gear due to uneven loading of intermediate gears each row;
limited increase in the carrying capacity for the transmission of power by setting the number of intermediate gears around the pinion shaft;
large transverse dimensions and weight of the gearbox due to the installation of the parasitic gears radially between the intermediate gear and a driven gear connected with the output shaft.The aim of the invention is the extension of the kinematic capabilities by providing equal or different speeds of rotation, the transmission of the same or different capacities through each output shaft, increasing the carrying capacity for the transmission of power through the installation of an increased number of intermediate gears, improving reliability and durability by reducing the uneven loading of the intermediate gears in each row and weight reduction gearbox by reducing the transverse dimensions of the gear.This goal is achieved by the fact that the intermediate gear in each row is set alternate with an equal or different number of teeth; geared with a pinion intermediate gear one group performed dvuhventsovye, and the other group odnovintovye that are installed in the gap between the crowns dvuhventsovye gears overlap;
every two idler gears two rows of transmission on each output shaft are connected by torsion;
parasitic gear installed in the circumferential direction on the side of the intermediate gears and connected with them.In Fig. 1 shows a coaxial gearbox with multi-threaded transfer with two output shafts, rotating in different directions, longitudinal section; Fig. 2 cross section b-B in Fig. 1; Fig. 3 cross-section b-b In Fig. 1; Fig. 4 cross section G-G in Fig. 1.The gearbox includes a housing 1 consisting of a front leg 2, from the Central part 3 with the fixed support 4, with removable bearings 5, 6 and 7, the drive shaft 8 with the pinion 9, the outer 10 and inner 11 output shafts, dvuhventsovye intermediate gear 12, consisting of the left 13 and right 14 teeth, crowns, and odnovintovye intermediate gear 15, meshed with the pinion 9, the intermediate gear 16 gear to the outer output shaft 10, United torsion 17 dvuhventsovye elapsed the output shaft 10, the intermediate gear 20 gear to the inner output shaft 11, connected by a torsion 21 with the intermediate gears 15 and meshed with an idle gear 22, which is meshed with a driven gear wheel 23, United through a splined coupling 24 with the inner output shaft 11, the bearings 25-28 intermediate and parasitic gears and bearings 29 and 30 setting the output shafts.To extend the kinematic capabilities of the intermediate gear set alternating in the circumferential direction by two groups: the first group of intermediate gears 12 and 16; the second group of intermediate gears 15 and 20.In the power flow during operation is separated from the pinion 9 on the two streams, the first of which is transmitted through the intermediate gear 12 and 16 of the first group and then through the slave gear wheel 18 on the outer output shaft 10, and the second power stream is transmitted through the intermediate gear 15 and 20, then through the parasitic gear 22 and through the slave gear wheel 23 on the inner output shaft 11.In each group have the same number of intermediate gears 12 and 16, 15 and 20 (4 pieces), resulting transmitted power during operation, che is in said intermediate gears in each group. At the same time transmitted power through the output shaft will be different.The number of teeth of the intermediate gears between groups 12 and 15, 16 and 20 are equal to each other, which provides the same ratio to each branch of the transmission and the number of turns of the inner and outer output shafts.When different numbers of teeth of the intermediate gears in each group ratio of each branch of the transmission and the number of revolutions of the output shaft will be different.To increase the carrying capacity of the gear transmission installed capacity increased the number of intermediate gears in each row by performing meshed with the pinion 9 of the intermediate gear 12 of the first group dvuhventsovye with toothed rims 13 and 14, and the intermediate gear 15 of the second group odnovintovye and due to the installation of the toothed crowns gear 15 in the gap between the gear rims 13 and 14 of the gear 12 with overlapping.To improve the reliability and durability every two intermediate gear on each output shaft 12 and 16, 15 and 20 are interconnected by a torsion 17 and 21, which reduces the uneven loading of the intermediate gears in each row while working for the accounts to change the direction of rotation of the inner output shaft 11, located in the circumferential direction on the side of the intermediate gears 20 and meshed with them, which helped to reduce the transverse dimensions of the gears and gear in General.The proposed solution allows you to create new, high-capacity and high-speed coaxial gearboxes with multi-threaded aplanetary transfer with two output shafts with extended kinematic capabilities by obtaining the same or different numbers of revolutions of the output shaft of selection of any direction of rotation, the transmission of the same or different capacities through each output shaft, with high load capacity for the transmission of power through the installation of an increased number of intermediate gears, i.e., by increasing multithreading transmission, with increased reliability and durability by reducing uneven loading of the intermediate gears in each row and with a reduced transverse dimensions of the gearbox by reducing the transverse dimensions of the gearing. 1. GEAR, COAXIALLY WITH multi-THREADED TRANSFER, comprising a housing, a drive shaft with a pinion, two coaxial with multidirectional rotation of the output shaft with the driven toothed wheel of Katerini to interact with the latest and pinion and parasitic gear, through which one of the output shafts associated with the respective intermediate gears, characterized in that, with the aim of expanding the kinematic capabilities of the intermediate gear set alternating in the circumferential direction of the two groups, which are kinematically interconnected along the length of the torsion and are in groups equal or different number of intermediate gears with equal or different number of teeth.2. The gearbox under item 1, characterized in that the parasitic gear in the circumferential direction is placed on the side of the intermediate gears associated with them.3. The gearbox under item 1, characterized in that when used in one of the groups dvuhventsovye intermediate gears for engagement with pinion response to him odnopozova intermediate gear of the second group are installed in the gap between the crowns dvuhvekovoi intermediate gear overlap.
FIELD: mechanical engineering; vehicle transmissions.
SUBSTANCE: proposed transfer case contains primary shaft 1, countershaft 9 and secondary shaft 12 with gear 13 with gear 13. Gearshift mechanism 4 is arranged on primary shaft 1, and gears 7 and 8 are installed on bearings 5 and 6. Gears 7 and 8 are in constant meshing with gears 10 and 11. Gear 13 of secondary shaft 12 is in meshing with one of gears of countershaft. Guide chute with higher pressure space closed by plate 14, oil collector 15 and system of oil channels 16 are made in case.
EFFECT: increased service life and possibility of towing of vehicle over long distances.
SUBSTANCE: inventions are related to variants of manufacture of reduction gears with separation of torque, mostly for rotary-wing aircraft. Reduction gear system according to the first version comprises inlet module, main module and module of forward traction. Main module is engaged with inlet module and comprises two main gears for coaxial counter-rotation around rotation axis of bearing screw. Module of forward traction is engaged with inlet module and comprises main reciprocal gear that rotates around rotation axis of transmission shaft, which is usually transverse to rotation axis of bearing screw. In reduction gear system according to second version inlet module has the first straight bevel gear engaged with the second straight bevel gear. The second straight bevel gear is engaged with the third straight bevel gear. The main module is engaged with inlet module. The main module gears are put in motion by the second straight bevel gear. Module of forward traction via forward gear is engaged with the third straight bevel gear of inlet module. In system of reduction gear according to the third version the main module is engaged with inlet module via inlet shaft, which is arranged with the possibility of rotation around rotation axis of inlet shaft. Module of forward traction is engaged with inlet module similar to other versions.
EFFECT: reduction gear weight and volume reduction, and also increased live load and space in cabin.
20 cl, 8 dwg
FIELD: machine building.
SUBSTANCE: system of reducer consists of multitude of three-step modules (26A, 26B, 26C) of power tooth gear dividing flow of torque; each module transmits torque from high-speed engine to shaft (24) of lifting screw. A packaged design of a conic flat tooth gear of the first step (S1) facilitates installation of the engine in various positions along all axes. On the second step (S2) units of hollow shafts ensure equal balance of load. On the third step (S3) each unit of the hollow shaft includes multitude of small gears engaging an output tooth gear (28) of the last step.
EFFECT: reduced weight and dimension, equal distribution of load and simple and inexpensive production.
8 cl, 8 dwg
FIELD: printing industry.
SUBSTANCE: invention relates to a jet recording device, which records by using driving transmission gear. The driving transmission gear by means of unit to switch condition of rotation switches between the condition of the limited rotation and the condition of the free rotation. In the limited rotation condition the planetary gear is engaged with the master inlet gear, and a pressing device is not able to transmit rotary moving force. In the free rotation condition the planetary gear is disengaged from the master inlet gear, and a pressing device is able to transmit rotary moving force. The mechanism of the movement transmission switching comprises the first and the second support sections, which are engaged with the planetary lever turned in the free rotation condition to set the initial condition of the planetary gear rotation position. The mechanism of movement transmission switching is able to select, which one of the first and the second support sections gets engaged with the planetary lever in compliance with the position of the master inlet gear, which transmits rotary moving force, from multiple master inlet gears.
EFFECT: increased reliability of the invention due to simplification of mechanisms.
19 cl, 21 dwg
FIELD: power industry.
SUBSTANCE: impeller design is described. Impeller has disc configuration with R radius, consists of hub, transverse-longitudinal frame rigidly attached to it and attached from above and from below to casing. Transverse-longitudinal frame is radial-annular, consists of radial ribs of the shape of radial section of disc and incomplete ribs installed in middle and peripheral parts of discs uniformly in circumferential direction, which are rigidly attached to several inner annular vertical spars. At that, outer external spar is reinforced, and height of impeller h1 in hub is more than height in peripheral end part h2.
EFFECT: creation of impeller design of electromechanical unit.
FIELD: power industry.
SUBSTANCE: ribs are laminated and consist of several layers; for that purpose, at the stage of mould loft the surface area of rib for each layer is divided into segments of various surface area so that joints of segments of contact layers are offset overlapped in horizontal and vertical planes. At that, sizes of segments are appointed based on manufacturing dimensions of moulds for moulding equipment; rib is assembled on layout table in continuous parts in which each layer is assembled of its segments; then, assembly is subject to vertical pressure and all layers are welded by means of resistance welding; after that, rib is moved on layout table and the next part is assembled.
EFFECT: development of method of industrial manufacture of large-size ribs of impeller.
FIELD: power industry.
SUBSTANCE: impeller of electromechanical plant has large overall dimensions; its diameter can be 20 and more metres; and so it cannot be transported as assembled to place of destination. Impeller consists of several sectors with length of chord, which does not exceed 4.6 metres gross; the above sectors are transported to the site and then attached to each other and to the hub with attachment assemblies. Each sector consists of part of radial-annular framework, part of external mounting spar, parts of lower and upper covering; at that, each sector is restricted with reinforced ribs which are adjacent to reinforced ribs of other adjacent sectors which are overlapped, and parts of external mounting spar are attached by butt welding.
EFFECT: providing the possibility of transporting the impeller to place of destination, developing the impeller that implements the above method.
2 cl, 3 dwg
FIELD: machine building.
SUBSTANCE: transfer mechanism consists of step (10) of conic gears for input of force and of at least one step (5) of planetary gears for force takeoff from side of cup. Step (10) of conic gears contains conic gear (20) with rim and vertical driven shaft (21) connected with a step of planetary gears by means of coupling (22). Instead of one drive of big power the step of conic gears has several separate drives (11, 12) and corresponding conic gears (15, 16) arranged for mutual engagement with conic gear (20).
EFFECT: facilitation of optimal distribution of load.
6 cl, 1 dwg
FIELD: power industry.
SUBSTANCE: device includes electric machine with vertical shaft of rotor, impeller (1) with gear rim in circumferential direction of which power plants are installed. Each power plant consists of housing (8), electric motor (9), reduction gear and propeller (11) in the form of gear which is conjugated with gear rim of impeller (1). Electric motors are rotated to one side, and thrust vectors of outlet gears are directed to the other side in plane of impeller.
EFFECT: device allows transmitting torque moments of considerable value to impeller of electromechanical plant at strict compliance of angular speeds of electric motor and impeller.
FIELD: power engineering.
SUBSTANCE: generating electric machine is installed into a concreted cofferdam of open ground. The shaft of its rotor is fixed at the bottom and at the top in radial bearings, and on the top it is connected with an impeller by means of an intermediate assembly - a driving bushing, which is connected from inside with a splint joint to the electric machine rotor shaft, and from outside it is rigidly fixed to the impeller's hub. The vector of the impeller's weight value is transferred via the driving bushing that rests against the thrust bearings of a girder plate installed onto a crosspiece fixed with support pillars. In the electric machines with vertical axis of rotor rotation the vertical load at support elements is considerably reduced.
EFFECT: development of an alternative electromechanical source of power generation.