SU1541401A1 - Giratory pneumatic motor - Google Patents

Abstract

The invention relates to the field of engineering, in particular to pneumatic motors, and can be used in drilling mechanisms. The goal is to increase the power of the pneumatic motor by increasing the capacity of the distribution system. A pneumatic motor, includes a housing 1 with front 4 and rear 6 end caps, exhaust channels 7 and axial channels 5 for supplying the working fluid and movable inner rollers 2, a hollow rotor 8 with teeth and radial channels 10 between them mounted with an eccentricity body 1 between them, a sleeve 11 placed eccentrically inside the rotor 8 with helical grooves 12 on its outer surface connected to the radial channels 10, the sleeve 11 being installed with the possibility of periodically communicating the screw grooves 12 with the axial channels 5. In case 1 longitudinal bypass holes 3, in the rear end cover 6 — additional channels 13 for supplying the working fluid placed opposite to the axial channels 5 in the front cover 4 and communicated with them through the bypass holes 3, and screw grooves 12 on either side of the place of their communication with the radial channels 10 have opposite cutting directions.

Description

The invention relates to mechanical engineering, in particular, to pneumatic motor internal gearing of rotors, and it can be used in drilling mechanisms as core drills and in drill heads.

The circuit of the invention is to increase the power of the pneumatic motor by increasing the capacity of the distribution system.

FIG. 1 shows a pneumatic motor, a longitudinal section; in fig. 2 shows section A-A in FIG. one; in fig. 3 - scan the outer surface of the sleeve. The gerotor pneumatic motor comprises a housing 1 with movable inner rollers 2 and shaped bypass openings 3, a front face mud k with axial channels 5 supplying the working fluid, a rear face mud 6 with channels 7 discharging the working fluid. A hollow rotor 8 mounted in an eccentric body 1 with teeth 9 and radial channels 10 between them. A sleeve 11 placed eccentrically inside the rotor 8 with helical grooves 12 on its outer surface, the screw grooves 12 on either side of them being combined with the radial grooves 10 have opposite cutting directions. The number of rollers 2 of the housing 1 is one more than the number of teeth 7 of the rotor 8, and the sleeve 11 is installed with the possibility of periodic communication screw grooves 12 with axial channels 5. In the rear end cover 6 there are additional channels 13 supplying the working fluid placed opposite to axial channels 5 kryke 1 and communicated with him through the bypass holes 3.

The contacting teeth 9 of the rotor 8 and the rollers 2 of the housing 1 form the working chambers and 15 variable volumes, CO combined with the screw grooves 12 in the rotor 8.

Inside the sleeve 11 is placed a shaft 16 connected to it by means of a gear pair. The shaft 16 forms an internal cavity G / with the inner surface of the sleeve 11.

Gerotor pneumomotor works as follows.

Through the axial channels lj of the supply, the working body is fed into the screw grooves 12 of the rotor 8 in such a way that it reaches the ends of the sleeve 11 through channel i and on the opposite side through longitudinal overflow holes 3 and additional channels 13 in the rear end cap 6.

Due to the eccentric arrangement of the rotor 8, half of the helical grooves 12 of the sleeve 11 communicate with the channels 5 and the channels 13. The working body enters the working chamber I by the radial grooves 10. half of the working chamber 15 along the radial grooves 10 and the other half of the helical grooves 12 communicated at the end of the rotor 8 with the internal cavity 17. Through the channels 7, the working fluid is discharged from the internal cavity 17.

Making a planetary motion, the rotor 8 by means of a gear pair rotates the shaft 16.

invention formula

Claims (2)

1.Herotor pneumomotor, comprising a housing with front and rear end caps, drainage channels and axial channels for supplying a working fluid and movable inner rollers, an eccentric hollow rotor mounted therein with teeth and radial channels between them, and a sleeve eccentrically placed inside the rotor with helical grooves on its outer surface communicating with the radial channels, the number of rollers in the housing being one more than rotor teeth, and the sleeve is installed with the possibility of periodic communication of helical grooves with axial channels, characterized in that, in order to increase the power of the pneumatic motor by increasing the transmission capacity The distribution system has longitudinal overflow holes in the housing, additional channels for supplying the working fluid located opposite the axial channels in the front cover and communicating with them through the bypass holes in the rear end cover and screw grooves on either side of their radial channels have opposite cutting directions. 2. A pneumatic motor according to claim 2, characterized in that the discharge channels for the working fluid are provided in the rear end cap. Ml / 8 eleven A 15 12 FIG. 2 NRE Figz Editor N. Lazarenko Compiled by V. Sedov Tehred L.Oliynyk Proofreader A.Obruchar Order 271 Circulation 23 VNIIPI State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035, Moscow, Zh-35, Raushsk nab., K / S Production and Publishing Combine Patent, Uzhgorod, st. Gagarin, 101 output Cutting Rights Leva slicing Subscription