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Lock device for restricting rotational movement

An interlocking device and technology to limit rotation, which is applied in the field of electric power products and machinery, and can solve problems such as misoperation of isolating switches

Active Publication Date: 2013-12-18
ABB (SCHWEIZ) AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The gap between the hole and the padlock U-bar allows the shaft to turn at a small angle even with the plate and fixed plate locked, which could lead to misoperation of the disconnector

Method used

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  • Lock device for restricting rotational movement
  • Lock device for restricting rotational movement
  • Lock device for restricting rotational movement

Examples

Experimental program
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Effect test

Embodiment Construction

[0035] The preferred embodiment of the present invention will be described in more detail below in conjunction with the accompanying drawings of the present invention. Such as Figure 2A As shown, the first preferred embodiment of the interlocking device for limiting rotational movement includes a sleeve 3 which is rotatable about an axis 100 and movable along the axis 100 . The sleeve 3 comprises a protrusion 32 which can interact with the notch 12 in order to limit the rotation of the sleeve 3 in the locked position of the protrusion 32 . The interlock also includes a handle 4 which prevents the sleeve 3 from moving out of the locked position of the projection 32 in the axial direction 100 .

[0036] The handle 4 has a circular cross-section and has two parts of different diameters. Such as Figure 3A and Figure 3B As shown, the first surface 43, that is, the surface of the longer diameter portion, can adjoin the protrusion 21 fixed on the axial direction 100 in the lock...

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PUM

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Abstract

The present invention provides a lock device for restricting rotational movement and a Gas Insulated Switchgear comprises the lock device to prevent unauthorized operation of disconnector. The lock device comprises a bush (3) adapted to rotate about an axial direction (100) and to move along said axial direction (100); the bush (3) comprising a first protrusion (32) adapted to interact with a first counterpart (12) in order to restrict, in a locked position of the first protrusion (32), the rotation of said bush (3). The lock device further comprising a handle (4) or a padlock (41) adapted to prevent the bush (3) from moving in axial direction (100) out of the locked position of the first protrusion (32). The handle (4) is adapted to couple to the bush (3) in said axial direction (100). The handle (4) comprises a first surface (43) adapted to abut against, in a locked position (400) of said handle (4), a third counterpart (21 ) fixed in axial direction (100), in order to prevent the bush (3) from moving in axial direction (100) out of the locked position of the first protrusion (32).

Description

technical field [0001] The invention relates to the technical fields of electric power products and machinery, in particular to an interlock mechanism for restricting rotational movement. Background technique [0002] Bus voltage transformers (abbreviated as VT or PT) are used to measure the voltage of the bus. Sometimes it is necessary to maintain PTs while the bus is in use. At this time, the PT needs to be disconnected from the main circuit, which is realized through the PT isolation switch. The PT disconnector is located in the gas tank of the gas insulated switchgear (GIS). The PT isolation switch is respectively connected with the insulating material in the gas tank and the handle outside the gas tank. Typically a rotating shaft is used to actuate a disconnect switch from connected to disconnected. Anyone outside the gas tank can access and operate the rotating shaft, which is a risk for the gas insulated switchgear and the operator. Therefore, it is necessary to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16B7/00F16B7/14F16B21/00H01H9/24H01H33/50
CPCH01H33/50H01H9/281
Inventor 岑飞黄晓波
Owner ABB (SCHWEIZ) AG