RU222548U1 - HYDRAULIC DISTRIBUTOR SLEEVE HEAD - Google Patents

Abstract

The utility model is intended for electrohydraulic devices for controlling and distributing working fluid to control power distributors operating under conditions of increased vibration and shock loads. The technical result consists in the development of a spool control head, which provides light signaling when the handle is in a position other than neutral. The spool control head, used to control the hydraulic control valve, contains a housing, a cylindrical spool pair installed in it, when the spool moves, in which the fluid flow is directed from the "PRESSURE" channel into one of two channels "A" or "B", a manual control handle, with a mechanism for rigidly fixing the position, on an axis with a cam that moves the spool manually, single-acting electromagnets that move the spool in one direction or the other after an electrical signal is applied to one or the other electromagnet. The housing has a limit switch and an LED signaling the movement of the manual control handle from the neutral position. 2 salary f-ly, 6 ill.

Description

The utility model relates to the field of electro-hydraulic distribution mechanisms for distributing working fluid in a hydraulic system, in particular to spool-type distribution mechanisms, namely to the spool head of a hydraulic distributor equipped with a switch-on indicator.

As a prototype, the patent for utility model of the Russian Federation No. 186757 with priority dated October 3, 2018 was chosen, which describes a hydraulic distributor containing a housing in which a sleeve with a spool is installed, a drive electric motor having a rotor installed in the stator on two bearings and through an eccentric with a third bearing kinematically connected to one of the ends of the spool, a screw stop installed in the threaded hole of the housing, and a spring placed in the housing with the possibility of pressing the end of the sleeve to the screw stop. A bushing is installed between the spring, placed in the housing with the possibility of pressing the end of the sleeve against the screw stop, and the sleeve, and an additional spring is installed between the sleeve and the spool, ensuring that the spool is pressed against the rotor of the drive motor.

The technical task of this utility model is to develop a spool control head, which provides light signaling when the handle is in a position other than neutral.

To solve the stated technical problem, a spool head of a hydraulic distributor is proposed, containing a spool pair, when the spool moves, in which the fluid flow is directed from the "PRESSURE" channel into one of two channels "A" or "B", a manual control handle with a mechanism for rigidly fixing the position on an axle with a cam that moves the spool manually, two single-acting electromagnets with a traction force of at least 4 kgf, moving the spool in one direction or the other after applying an electrical signal to one or the other electromagnet, a housing having a channel for electrical wiring that allows connecting the heads spool controls with power spools in a section of several distributors, a limit switch, and an LED signaling the movement of the manual control handle from the neutral position.

Next, the utility model will be described in more detail with reference to the attached drawings.

Fig. 1 - general view of the spool head of a hydraulic distributor according to one of the embodiments of this utility model;

Fig. 2 is a top view of the spool head of the hydraulic distributor shown in Fig. 1;

Fig. 3 is a side view of the spool head of the hydraulic distributor shown in FIG. 1;

Fig. 4 is a sectional view B-B taken from FIG. 3;

Fig. 5 is a sectional view B-B taken from FIG. 2;

Fig. 6 is a sectional view A-A taken from FIG. 3.

Designations on the drawings:

1 - spool head; 2 - spool pair; 3 - manual control handle; 4 - axis with cam; 5 - single-acting electromagnet; 6 - system of electrical wiring channels; 7 - limit switch; 8 - LED; 9 - block; 10 - connection block cover; 11 - cover of the signaling mechanism.

According to the preferred embodiment of the present utility model, shown in FIG. 1, the spool head body 1 is made of 1561 aluminum alloy, and the hydraulic distributor body is coated with An.Ox.tv. thickness of at least 25 microns. Spool pair 2, shown in Fig. 5 and fig. 6, consists of a bushing and spool, which are made of 38ХМУА steel with a nitrided surface. The handle 3 contains a rigid position locking mechanism located on the axis 4 with a cam, as shown in Fig. 4. Electromagnets 5 have a traction force of at least 4 kgf at a voltage of 24 V. The wires in the electrical wiring channel system 6 have a cross-section of 1.25 mm ² , shown in Fig. 1, fig. 3 and fig. 4. Limit switch 7 is connected to LED 8. The switch-on indicator in manual mode is a microswitch electrically connected to the LED. Block 9 is used to switch wires and disconnect one or more distributors from the assembled section for repair and maintenance. The cover of the connecting block 10 and the cover of the alarm mechanism 11, shown in Fig. 2, are designed to fit tightly to the housing.

The spool head of the hydraulic distributor according to this utility model operates as follows.

Two single-acting electromagnets 5 move the spool in one direction or the other after an electrical signal is applied to one or the other electromagnet. When the spool moves in the sleeve, the fluid flow is directed from the “pressure” channel shown in Fig. 3, into one of two channels “A” or “B”. Electrical wiring is installed inside the housing in a 6-channel system, which ensures its protection from moisture, vibration, etc. Block 9 allows you to connect several distributors into one section, while it is possible to connect up to seven distributors into one section. Manual control handle 3, which has a rigid position locking mechanism, allows you to operate the spool manually. In this case, when handle 3 is moved to position “A” or “B”, the cam located on the axis of the handle acts on the microswitch and closes the LED circuit, which signals the inclusion of manual (other than neutral) mode.

It should be understood that the above examples are used only for the purpose of illustrating the possibility of implementing a utility model and a number of its advantages, and these examples do not limit the scope of legal protection presented in the formula, while a specialist in this field is relatively easily able to implement other variants of the utility model without waste from its essence within the scope of legal protection.

Claims (3)

1. The spool head of the hydraulic distributor, characterized by the fact that it contains a spool pair, when the spool moves, in which the fluid flow is directed from the “PRESSURE” channel into one of two channels “A” or “B”, a manual control handle with a mechanism for rigidly fixing the position on an axis with a cam that moves the spool in manual mode, two single-acting electromagnets that move the spool in one direction or the other after an electrical signal is applied to one or the other electromagnet, a housing, a limit switch and an LED indicating the movement of the manual control handle from the neutral position. 2. Spool head according to claim 1, characterized in that it has two electromagnets located inside the housing. 3. Spool head according to claim 1, characterized in that it has a light signal for turning on the channel in manual mode.