SU577303A1 - Distributor - Google Patents

Description

The invention relates to hydraulics, in particular, valves with a flat rotary valve, used in hydraulic actuators b of a handgrip (control, for example, in hydromechanical steering gears of aviation control systems. A distributor containing a distribution plate with a throttling drain hole, a supporting ring, a pressure plate, a rotary flat plate the spool, wrapped around the lever, mounted on the control shaft and separating the internal volume of the distributor in two cavities. On the control lever lever In the area of the drainage edge, there is a shaped profile that deflects a drainage jet and compensates for 1 hydrodynamic forces on the spool l J. The disadvantage of this distributor is the complexity of the calculation and production of the shaped profile, as well as the lack of efficiency of compensation of hydrodynamic forces. is to simplify the design of the distributor and increase the effect of compensation of hydrodynamic forces. This is achieved by the fact that in the proposed distributor additional drain chokes are made uyuschee opening lever is formed as a blade rbrazuyuschey sealing gap along the perimeter with the support ring, and on an end face - with a distribution and presser plates for maintaining said cavities, each of which communicates with a respective drain hole drosseliruk Dim ,. . FIG. 1 shows the proposed distributor, a general view; FIG. 2, section A-A in FIG. one; in fig. 3 shows a section BB in FIG. If in FIG. 4 shows a section B-B in FIG. 3. IB of the distributor housing 1, the distributor plate 2, having a discharge channel 3; ; cavity channels 4 and 5, windows 6 and 7, throttling drain holes 8 and 9, extending into the drain channel 10. Plane rotary valve II is grasped by a lever 12 fixed on the control shaft 13. This lever is made in the form of a blade forming sealing slots 14 along the perimeter with the support ring 15 and sealing slots 16 along the end with the distribution 2 and pressure 17 plates. The lever divides the internal volume of the distributor into separated:; -; yg cavities 18 and 19, each of which communicates with the corresponding drain holes 8 and 9 and through them with the drain channel 10.

When the control room 13 is rotated from the neutral position to the position shown in FIG. 3, the spool 1 opens windows 6 and 7 in the distribution plate 2. The flow of working fluid from the discharge channel 3 passes through the spool, window 7 and the cavity channel 5 and further into the hydraulic engine.

From the hydraulic motor. The flow of fluid passes through the cavity channel 4 and the window 6, enters the corresponding disconnected cavity (in this case, the cavity 18) of the distributor and flows with resistance through the throttling drain hole 9 into the discharge channel 10, A small part of the flow through the sealing slots 14, located along the perimeter and sealing to, spruce 16 between the lever 12 and the plate 2, as well as the plate 17 flows into the sosar cavity 19 distributor.

The pressure drop between the distributor cavities due to the resistance of the throttling hole 9 cos; -.-- t.ch on the lever 12 moment, direction; ieH-baga the opening of distribution chzkg-i b. i.e. against the action of gid0-: ..11am1-1ichnyh forces on the spool, and compensates for them.

Thus, by selecting a plotsadi throttling drain holes

in a slab, you can be g.luchkt:;

Formula kzobr. Genik

A distributor containing a distribution plate with a drain channel f

the support ring, which is fixed, the rotary flat slide valve, which is grasped by the lever, is fixed on the control shaft and the division of the internal volume of the distributor, the color of the cavity, in order to simplify its design and increase the efficiency to: 1 hydrodynamic laxadia Forces, 7 distribution plate is made of drain throttling holes, - and the lever is made J3 as blades, forming sealing plugs. Perimeter with support ring and on the end - with distribution and pressure plate. Gemc, once general cavities than those indicated; kalda from

5 1 which communicates with the corresponding drain throttling hole.

Sources of information - taken into account in the examination

1. Ruzhitsky EH, to, CR. Ensuring sustainability of and: idrodin №: flat unloading;; spool switchgear; god; codedness,

„Aircraft production, 1974

 K 10 s. thirty.

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