SU1335730A1 - Gear-type hydraulic machine - Google Patents

Abstract

The invention relates to hydraulic engineering and allows to increase volumetric efficiency 5 operation reliability and simplify the design. Flat faces on the outer radial surface of the bearing blocks (PB) 6 are parallel to the plane passing through the geometrical axes of rotation of the gears of PB 6 against the cylindrical bore of the casing with their own diametrically counter / 23 (/ CO has eaten h with

Description

positive radial surfaces. Radial sealing elements 8 are installed with a guaranteed clearance 23 relative to the cylindrical bore of the housing 1. The console parts 11 of the elements 8 are installed with a guaranteed clearance 24 into the grooves PB 6,

This invention relates to mechanical engineering, in particular to gear hydromachines,

The purpose of the invention is to increase the volumetric efficiency, reliability and simplification of the design.

Figure 1 shows the gear of a hydraulic machine, a longitudinal section; FIG. 2 is a section A-A in FIG. 1; FIG. 3 is a section BB in FIG. 1; FIG. 4 shows a bearing block, isometries.

The external gearing hydraulic gear includes a housing 1, in a cylindrical bore 2 of which gears 3 are located with trunnings 4 mounted in the holes 5 of the bearing blocks 6, face 7 and radial 8 sealing elements with chambers of pressing 9 and 10, for example: cantilever parts 11 of radial sealing elements 8 are supported on the trunnion 4 of the gears 3, and the end sealing elements 7 are installed with a guaranteed clearance 12 relative to the radial sealing elements 8 and are coupled with the ends of the 13 gears 3, the supply channels 14 and removal of the working fluid 15, while on the outer radial surface 16 of the bearing units 6 are made flats 17 parallel to the plane 1B passing through the geometrical axes 19 and 20 of the rotation of the gears 3, and on their end surface 21 from the side opposite to the ends 13 gears 3 are made with grooves 22, with the bearing blocks 6 mating with the cylindrical bore 2 of the housing 1 with their diametrically opposite radial surfaces 16, the radial sealing elements 8 are installed with a guaranteed clearance 23 and 1335730

made on the end surface of the PB 6 from the side opposite to the ends of the 13 gears. As a result, the hydraulic machine is operated for a long time with minimal face and radial leaks of the working fluid, 4 sludge.

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each cylindrical bore 2 of the housing 1, and their cantilever parts 11 with a guaranteed clearance of 24 into the grooves 22 of the bearing units 6,

Gear hydromachine in pump mode works as follows. During the rotation of the gears 3, the working fluid is captured by the teeth of the gears 3 and in interdental cavities is transferred from the feed channel 14 to the drain channel 15 of the working fluid. At the same time, the working fluid of high pressure enters the chambers of the 9 and 10 and 11 Oz presses, presses the sealing elements 7 to the ends of the 13 gears 3 5 and the radii (sealing elements 8 to the external radial surface of the gears 3. At the same time, the radial sealing elements 8 with their cantilevers parts 11 are supported on the outer ends of the pins 4 of the gears 3, and the bearing blocks 6 are matched with their diametrically opposite radial surfaces 16 with a cylindrical bore 2 of the body 1, Installing the radial sealing elements 8 with a guaranteed clearance of 23 relative to the cylindrical bore 2 of the housing 1, and

0 cantilever parts 11 with a guaranteed clearance of 24 in the grooves of the 22 bearing units and installation of mechanical sealing elements 7 with a guaranteed clearance of 12 relative to

5 radial sealing elements 7 ensures long-term operation of the gear hydraulic machine with minimal face and radial overflows of the working fluid 1.

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Claims (1)

Invention Formula The external gearing gear hydromachine, comprising a housing, in the cylindrical bore of which is different. Shesheni blessed with trunnions installed in the holes of the bearing blocks. the mechanical, radial and radial sealing elements with pressure chambers, the cantilever parts of the radial sealing elements resting on the axles of the gears, and the mechanical sealing elements are installed with a guaranteed QRi bore body gap relative to the radial sealing elements and mated with the ends of the gears, the channels for supplying and discharging the working fluid, characterized in that, in order to increase volumetric efficiency, reliability and simplify the design. . but 3357304 on the outer radial surface of the bearing blocks, flats are made parallel to the plane passing through the geometric axes of rotation gears, and grooves are made on their end surface on the side opposite to gear ends; the bearing blocks are coupled with cylindrical diametrically opposed radial surfaces, radial sealing elements are installed with a guaranteed clearance relative to the cylindrical bore of the housing, and their cantilever parts with a guaranteed clearance into the grooves bearing blocks. f6 22 21 Phage. Editor G. Gerber Compiled by V o Sharypov Tehred V. Kadar Proofreader G, Reshetnik Order 4032/30. Circulation 574 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, Proektna St., 4