RU188118U1 - MOBILE LOCKS CONTROL MECHANISM - Google Patents

Abstract

This utility model relates to the field of electrical engineering, namely to the construction of enclosures for high-voltage switchgears. The mechanism connecting the plate that restricts access to the drive of the grounding disconnector with the standard mechanism for locking the trolley of the sliding switchgear element, made in the form of two interacting levers, the shoulders of the first lever moving in a plane close to the perpendicular plane of the plate, the shoulders of the second lever moving in a plane close to the perpendicular plane of movement of the first lever, one of the shoulders of the first lever is driven by a plate, the other shoulder of the first lever rotates the second lever, including first lock the trolley sliding element KRU. Thus, the claimed technical solution can significantly reduce the useful space of the switchgear occupied by the mechanism for controlling the lock of the carriage of the retractable element; 2 of FIG.

Description

This utility model relates to the field of electrical engineering, namely, to the designs of enclosures intended for high-voltage switchgears.

To protect the personnel operating and servicing the switchgear, in GOST 12.2.007.4-75 a blocking is prescribed that does not allow the sliding element to be moved from the control (disconnected) to the working position with the blades of the grounding disconnector turned on;

For this, most of the typical designs of manufactured industrial sliding elements have a built-in mechanical blocking of the movement of the sliding element, controlled from the outside. Typical designs of grounding disconnectors, in turn, are equipped with a spring-loaded plate that blocks access to the drive shaft of the grounding disconnector. To implement the necessary protection, the mechanical connection of this plate with the blocking of the trolley is realized.

The well-known solution used by many manufacturers, presented in the form of a kinematic diagram in FIG. 1, that when the operator moves plate 1 along the OZ axis to open access to the drive of the grounding disconnector, plate 1 pulls a system of two levers 2 connected by a hinge that rotates axis 3 in the XOZ plane. The lever 4, mounted on the axis 3, when turning, presses on the element of the carriage of the retractable element, including its blocking.

This solution has disadvantages: the mechanism is made of four or more components with a swivel, and therefore is relatively complicated and expensive in industrial production; the arrangement of levers uses a lot of useful space inside the switchgear enclosure.

The claimed technical solution is aimed at creating a simple and inexpensive in industrial production control mechanism for locking the trolley of the sliding element of the switchgear and reducing the space occupied by it.

The design of the proposed technical solution is shown in the drawings, which depict the kinematic diagrams:

FIG. 1 is a well-known solution to the control mechanism for locking the bogie of the retractable element, general view;

FIG. 2 - the claimed technical solution of the control mechanism for locking the bogie of the retractable element, general view;

Designations:

1 - plate restricting access to the drive of the grounding disconnector;

2 - a system of two levers;

3 - axis;

4 - lever, including locking;

5 - lever;

6 - lever, including locking.

The claimed technical solution can be implemented in the design of the switchgear enclosure containing a retractable element and a ground disconnector.

The control mechanism for locking the trolley of the sliding element of the switchgear is arranged and operates as follows.

When moving the plate 1 along the OZ axis to open access to the drive of the grounding disconnector, it rotates in the YOZ plane lever 5, mounted on the axis in the middle part. The opposite arm of the lever 5 rotates in the XOZ plane the lever 6, mounted on an axis. The lever 6 presses on the element of the trolley, actuating the device for blocking the movement of the carriage of the retractable element.

Thus, the claimed technical solution can significantly reduce the useful space of the switchgear along the OX axis, occupied by the mechanism for controlling the lock of the carriage of the retractable element, allows the mechanism to be manufactured in the form of two simple elements that do not require the use of sophisticated equipment and high accuracy, that is, it is economical in industrial production.

Claims (1)

 The mechanism connecting the plate that restricts access to the drive of the grounding disconnector with the standard mechanism for locking the trolley of the sliding switchgear element, made in the form of two interacting levers, the shoulders of the first lever moving in a plane close to the perpendicular plane of the plate, the shoulders of the second lever moving in a plane close to the perpendicular plane of movement of the first lever, one of the shoulders of the first lever is driven by a plate, the other shoulder of the first lever rotates the second lever, including first lock the trolley sliding element KRU.

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