SU1376067A1 - Regulating hydraulic apparatus - Google Patents

Abstract

The invention relates to automatic regulation and can be used in hydraulic actuators and hydraulic automatic systems for various purposes. The purpose of the invention is to increase the reliability and broaden the range of application of the hydroplastic. The first 2 and second 3 channels are made in the housing 1 of the hydraulic unit, between which a spring-loaded plunger 6c with an axial bore 7 is installed in the sleeve 4 with openings 5. With the openings 5 of the sleeve 4, the cutout edge "of the plunger 6 forms the main throttling slot, forms with rod 8 additional throttling slot $ SL

Description

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in the form of an annular gap S. The hydraulic apparatus is provided with a control element 9 installed in the cover 10. The plunger 6 is pressed by the spring 11 placed in the cavity 14 of the housing 1 to the stop 12 of the rod 8, the housing 1 has an additional channel 13 connecting the cavity 14 to the first channel 2 through a spring-loaded non-return valve 15, which is provided with an assembly for adjusting its spring 16, made in the form of a screw 17. 2. f-ly, 3 ill.

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This invention relates to automatic regulation and can be used in hydraulic drives and hydraulic automation systems for various purposes.

The purpose of the invention is to simplify, increase reliability and expand the field of application of a hydro apparatus.

Figure 1 shows the regulating hydro; Figures 2 and 3 are diagrams of a hydro apparatus with different uses.

A regulating hydraulic device having a housing 1c with the first 2 and second 3 channels, between the coils in the sleeve 4, having holes 5, a spring-loaded plunger 6 is installed, in which an axial hole 7 is made. The cutting edge a of the plug 4 with the holes 5 of the sleeve 4 forms the main throttling gap, and The axial bore 7 of the plunger forms with the stem 8 an additional throttling gap in the form of an annular gap B.. The hydraulic apparatus is provided with a control organ 9 installed in the lid 10. The plunger 6 is pressed by the spring 11 placed in the housing cavity to the stop 12 of the rod 8. The housing 1 has an additional channel 13 connecting the cavity 14, in which the spring 11 is located, with the first channel 2 through spring-loaded non-return valve .15, which is equipped with an assembly for adjusting its spring 16, made in the form of a screw 17. In FIG. Figures 2 and 3 show diagrams with a hydraulic cylinder 18 to which a hydraulic apparatus is connected as a controller.

The regulating hydraulic device is as follows.

At. use it as a throttle with a check valve (figure 2), the first channel 2 is connected to the rod

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the cavity of the hydraulic cylinder 18, and the second channel 3 is connected to a drain or pressure source. The speed of movement of the piston of the hydraulic cylinder is controlled by opening the holes 5 by moving the piston of the plunger 6 with a manual control element 9. When reversing the fluid flow, the plunger 6 under the action of its pressure moves upward, passing the flow through the openings 5 into channel 2. The amount of back pressure created by the check valve is adjusted by a screw 17. When using a hydraulic apparatus as a hydraulic valve, pressure, for example, to maintain vertically moving masses (FIG. 3) the working fluid flows from the pressure source into the rodless cavity of the hydraulic cylinder 18, and its rod cavity is connected to channel 3. As soon as the pressure in the rod cavity of the hydraulic cylinder and also into the channel .3 and in the cavity 14 and channel 13 connected with it gap exceeds the pressure of the spring 16 setting, valve 15 opens and lets fluid flow into channel 2. The pressure difference between channel 3 and cavity 14 causes the plunger 6 to move upward, as a result through holes 5 to drain. When the pressure in the rod end of the hydraulic cylinder is lower than the tuning value, the plunger 6 cuts off the channel 3 from the channel 2, locking the rod cavity of the hydraulic cylinder 18, and keeps its rod and piston in weight. .

A hydraulic apparatus can be used as a two-way throttle: in one direction as a normal throttle, and in the opposite direction as a throttle with pressure limiting.

Claims (3)

1. A regulating hydraulic device, comprising a housing with first and second channels, a spring loaded plunger inserted between them, mounted in a sleeve with openings connected to the first channel; and provided with a cut-off edge, which forms the main throttling gap with the holes of the sleeve, and a control in the form of a rod placed in the axial hole of the plunger, equipped with a stop, towards which the plunger is pressed, with the secondary of the plunger on the side of the cutting edge communicating with the second channel, which that, in order to increase the reliability and expand the field of application of the regulating hydraulic apparatus, it is equipped with a spring-loaded non-return valve placed in an additional channel made in the housing and connecting a cavity in which the plunger spring is located with the first channel, the cavity being separated from the second channel by a plunger, and the plunger is provided with an additional throttling slot that communicates the second channel with the cavity in which the plunger spring is located. 2, Hydroapparatus according to claim 1, about the t of l and-ch. A y i and so that, with the aim its simplification, the additional throttling gap is formed by an annular gap between the axial bore of the plunger and the rod, 3. The hydraulic apparatus according to claims 1 and 2, which is characterized by the fact that the spring-loaded non-return valve is equipped with a spring force adjustment unit .. FIG. 2 I Fig.Z