SU912991A1 - Differential pulse-type transmission - Google Patents

Description

(54) DIFFERENTIAL PULSE TRANSMISSION

I

The invention relates to mechanical engineering and can be used in transmissions of self-propelled machines and, in particular, in transmissions of tractors.

A known pulsed transmission comprising a fixed adjustable eccentric rotating the housing rigidly connected to the drive shaft. Star-mounted gears are installed in the case with straighteners embedded in them. The gears are kinematically coupled to the center wheel and the output shaft of the transmission 1.

However, this transmission cannot be used in transmissions of self-propelled machines because it is accelerating, not slowing down.

Closest to the invention to the technical essence is a differential pulse transmission, comprising a housing, input, intermediate and output shafts accommodated therein, an adjustable eccentric made in the form of an annular groove and installed in the housing with the possibility of radial mixing, a pulsator.

the carrier mounted sternly on the input shaft, satellites placed in it, the axes of which are made in the form of rocker arms, interacting with the annular groove, straighteners embedded in the satellite 1 1, and the sun gear interacting with the satellites installed on the intermediate shaft, and a planetary array, including a central wheel with outer teeth mounted on the intermediate shaft, carrier, satellites and central wheel with internal teeth 2).

Claims (2)

A disadvantage of the known transmission is the complexity of the design, since in addition to the pulser and the planetary row, the gear has a second planetary row containing a central wheel with external teeth, rigidly connected to the puller of the pulser, braked carrier, satellites and a central wheel with internal teeth, rigidly associated with a similar wheel of the first planetary row, the carrier of which is associated with the output shaft. Similar to the kinematic transmission scheme in 39 generally leads to the fact that the maximum eccentricity of the eccentric and maximum dynamic loads correspond to the maximum revolutions of the output shaft, which adversely affects the durability of the transmission. The purpose of the invention is to simplify the design, reducing weight and size indicators. This goal is ensured by the fact that in differential pulse transmission, the carrier of a planetary row is rigidly connected with the carrier of the pulsator, and the wheel with internal teeth is connected with the output shaft. The drawing shows the kinematic scheme of the differential pulse transmission. The transmission includes a housing 1, input 2, intermediate 3 and output 4 shafts, as well as an eccentric with a ring "; outgoing pulley 5 mounted with radial displacement relative to the housing; on the input shaft 2 the carrier 6. In the latter there are satellites 7, the axes of which are made in the form of rocker arms 8, interacting with an annular groove 5. Rectifiers 9 are embedded in the satellites 7, the internal straps of which are it operates with rocker arms 8, and the satellites 7 themselves - with solar bristles 10 mounted on the intermediate shaft 3. A planetary row, including a central wheel 11 with external teeth, mounted on an intermittent shaft 3 engaging with it is kinematically connected The satellites 12 placed in the carrier 13, rigidly connected with the carrier 6 of the pulsator. The central wheel 14 with internal teeth is mounted on the output shaft 4. Differential pulse transmission works as follows. The starting position when starting up the mashina is setting the mp3 transmission to the maximum gear ratio (equal to, for example, 2.5), i.e. eccentric with ring groove 5 has a maximum eccentricity. At the same time, the rocker arms 8 of the straighteners 9 perform angular oscillations with a maximum amplitude, and the sun's crust 10, and with it the intermediate shaft 3 and the central wheel 11 rotate 2.5 times faster than the input shaft 2. At the same time, the central wheel 14 and the output shaft 4 motionless. For smooth moving of the machine, it is necessary to decrease the value of the eccentricity. An increase in the rotational speed of the output shaft 4 occurs until the eccentricity becomes zero. In this position, the pulse differential gear rotates as one, without transforming the torque of the engine. The technical and economic effect of the transmission lies in the comparative simplicity of the design, as well as in the fact that at the maximum and near-speeds of motion, the relative speed of the transmission elements is absent, which contributes to the increase in transmission long-life and efficiency. Invention Differential pulse transmission, comprising a housing, input, intermediate and output shafts placed in it, an adjustable eccentric with ring groove, mounted in the housing with the possibility of radial displacement, a pulser, including a satellite mounted on the input shaft, satellites located in it, the axes of which are made in the form of rocker arms, interacting with the annular groove, the extensions built into the satellites, and the sun explorer interacting with the satellites mounted on the intermediate shaft, and a planetary row, comprising a central wheel with external teeth, mounted on an intermediate shaft, a carrier, satellites and a central cluster with internal teeth, characterized in that, in order to simplify the design, to reduce the weight and dimensions, the planetary carrier was rigidly connected with drove puller, and the wheel with internal teeth - with the output shaft. Sources of information taken into account in the examination 1.Maltsev V.F. Mechanical impu: P) SNY transfer. M., Mapganostroenie, 1978, p. 43, fig. 36 2. Blagonravov A. A. Mechanical continuously variable transmissions of non-friction type. M., Mashchinostroenie, 1977, p. 124, Fig. 71 (prototype).