SU1552040A1 - Hydraulic loading device - Google Patents

Abstract

The invention relates to the study of gears or other parts of rotation. The purpose of the invention is to improve the accuracy of setting and maintaining the load. The hydraulic loading device contains a cylindrical body with blades 2 on the inner surface and a rotor with blades 4 located therein. On one side of each blade 2 is formed the first group of cavities 6, and on the other - the second group of cavities 7. In the case there are two annular collector. The first annular manifold 13 is connected via radial holes 15 to a group of cavities 7, and the second annular collector through holes 16 connects to a group of cavities 6. At least one of the pairs of cavities 6 and 7 is connected by a throttle channel 17, made in the blade 2 or 4. Thanks This implementation of the blades leads to their uniform filling and eliminating the influence of the change in the rotational speed on the value of the specified load. 2 Il.

Description

fig.g

31

The invention relates to the field of research gears under the action of given loads at a given speed of rolling, and can also be used to study other parts of rotation.

The purpose of the invention is to improve the accuracy of setting and maintaining the load.

FIG. 1 shows a hydraulic loading device, general view; in fig. 2 is a sectional view in FIG. one.

Hydraulic loading device

The tool for testing gears in a closed loop circuit comprises a hollow cylindrical body 1 with blades 2 on the inner surface. A rotor 3 with radial blades 4 is coaxially mounted in the housing 1. A cover 5 is attached to the housing 1. The blades 4 of the rotor are placed between the blades 2 of the stator to form one side of each blade 2 of the first group of cavities 6, and on the other side - the second group of cavities 7; The rotor has a central opening 8 in communication with the inlet channel (outlet) 9 and the annular channel 10 in communication with the outlet channel 11 (inlet).

The housing 1 is provided with a sleeve 12 pressed into it, which with the aid of peripheral annular grooves forms two annular manifolds 13 and 14 in the housing, separated from one another along the axis. The collector 13 through the radial holes 15 is connected with a group of cavities /, and the collector 14 through the holes 16 - with a group of cavities 6. At least one of the pairs of cavities 6 and 7 is communicated by a throttle channel 17, made in the blade 2 or the blade 4.

In the blades x 4 of the rotor 3 and in the rotor J, under the blades 2, plastic seals 18 and 19 are mounted according to the type of slide gate. In order to facilitate the selection of gaps in the seals 19 under the blades 2 and to simplify the manufacturing technology and assembly, all the blades 2 are made in a single piece housed in the case T in the form of a squirrel wheel.

The loading device operates as follows.

In the cavity 6, for example, pressure, through the central hole 8 and the channels 9 for supplying the rotor 3 is fed under

,

0

0

five

with a small pressure, the liquid, which evenly fills them, flows through the radial holes 16 through the annular manifold 14. Then, through the gaps in the seals and the calibrated throttle channel 17, the oil, through the holes 15 in the sleeve 12 and the collector RU 13, fills all the drain cavities 7, moreover, the filling of the latter is also uniform, providing a minimum imbalance. Then the oil enters the annular channel 10 through the outlet channels 11 in the rotor. Oil filling of the drain cavities 7 causes the centrifugal components of the pressure to balance on the rotor blades on both sides: from the pressure and drain cavities, thereby eliminating the effect of rotational speed on the value of the specified load. Upon filling the drain cavities 7, as evidenced by the occurrence of oil in the channel 10, the start is completed. After that, the tests are started directly by supplying the working pressure to the pressure cavities 6. The start-up time and the oil consumption through the device depend on the size of the channel 17 and the gaps in the seals 19 and 18 and are chosen individually for each version.

Their adjustment is carried out by processing the channel 17 or the number of such channels and choosing gaps in the seals. To carry out the reverse loading, the pressurized oil is fed through the channel 10 into the cavities 7, and is poured through the central opening 8. Such an implementation allows the device to expand its functionality by making it capable of alternating loading while increasing the accuracy of the load setting by ensuring that the loading is independent of the angular load. rotational speeds and, in addition, increase the service life of the device and support devices, such as bearings, due to the reduction in imbalances at start-up, to improve the technology of manufacture and assembly, greatly simplifying the operation of fitting the sealing surfaces.

0

0

45

50

55 claims

Hydraulic loading device containing a hollow body, I have

Claims (1)

55 claims A hydraulic loading device comprising a hollow body having rotation capability 5 '1552040, with blades on the inner surface, mounted rotatably inside the housing, a rotor coaxial with it with blades on the outer surface, placed between the blades of the housing with the formation on one side of each of them of one group of cavities, and on the other, of the second group of cavities, inlet and outlet channels made in the rotor, a throttle channel between groups of cavities, which differs in that, in order to increase the accuracy, To maintain and maintain the load, two annular collectors are made in the casing, one of which is in communication with the first group of cavities, and the other with the second, and the throttle channel is made in one of the blades.