CN205335111U

CN205335111U - Earth switch

Info

Publication number: CN205335111U
Application number: CN201620081137.9U
Authority: CN
Inventors: 吴立信
Original assignee: Wenzhou Huagang Electrical Co Ltd
Current assignee: China and Hong Kong Electric Co.,Ltd.
Priority date: 2016-01-27
Filing date: 2016-01-27
Publication date: 2016-06-22
Anticipated expiration: 2026-01-27

Abstract

The utility model provides an earth switch, includes: base, level hinge the main shaft on the base, fix at main epaxial driving plate, and the cover is at the main epaxial sword that moves to reach and move the combined floodgate spring that the sword is connected, moving and wearing to be equipped with the round pin axle on the sword, combined floodgate spring fixed connection is epaxial at this round pin, and is protruding useful in the lug that lifts round pin spool on the driving plate, the utility model discloses a technical essential lies in: be provided with the bolster between round pin axle and the lug, the utility model aims at providing a prevent a plectrum and a round pin earth switch who weares and teares.

Description

Earthed switch

Technical field

This utility model relates to a kind of power grid security protection device, particularly to a kind of earthed switch。

Background technology

Earthed switch has certain making capability to protect other electrical equipments in switchgear without damage, can support the use with various high-tension switch cabinets, ground protection when overhauling as high voltage electric equipment。

It is a kind of novel grounded switch disclosed in the Chinese utility model patent of CN101635206 at publication number disclosed on 01 27th, 2010；The structure such as including base, main shaft, moving knife support plate, switching-in spring, microswitch, location bar and baffle plate。But from this patent, for ensureing the intensity of earthed switch, its load parts are all made up of hard metal material, passing through rotation main shaft, when utilizing the driver plate turn moving knife on main shaft, driver plate is bigger with the Interaction Force of the bearing pin being located on moving knife, it is easy to cause that both wear and tear, and affects divide-shut brake precision。

Utility model content

The purpose of this utility model is to provide a kind of earthed switch preventing plectrum and bearing pin abrasion。

Above-mentioned technical purpose of the present utility model has the technical scheme that a kind of earthed switch, including: base, horizontally hinged main shaft on base, it is fixed on the driver plate on main shaft, it is enclosed within the moving knife on main shaft and the switching-in spring being connected with moving knife；Being equipped with bearing pin on moving knife, switching-in spring is fixedly connected on this bearing pin, has the projection for lifting bearing pin in driver plate projection, wherein: be provided with bolster between described bearing pin and projection。

By adopting technique scheme, utilize bolster pad between bearing pin and projection, it is to avoid bearing pin and projection are directly conflicted, and then deform because load is excessive, wear and tear, and have good buffering effect, significantly extend the service life of earthed switch。

Further: described switching-in spring upper end is fixed with plastic spring base, this spring socket sleeve is outside bearing pin, and keeps spring base and hinge, and bolster is arranged on this spring base。

Utilize spring base to connect bearing pin and switching-in spring, significantly reduce the installation difficulty of switching-in spring, facilitate its production and processing。

Further: bolster is one-body molded with spring base。

Facilitate the installation of bolster, the difficulty of processing of this earthed switch while making bolster play cushioning effect, will not be increased again。

Further: this bolster is closely connected with bearing pin。

When projection extrudes bearing pin, bolster is closely connected with bearing pin, effectively prevents bolster from being broken by projection, extends the service life of bolster。

Further: the protruding height on spring base of bolster is more than the protruding height on spring base of bearing pin。

Ensure the isolation between bearing pin and boss, it is to avoid because alignment error causes that bolster lost efficacy。

Accompanying drawing explanation

Fig. 1 is the schematic perspective view of this utility model embodiment earthed switch；

Fig. 2 is the enlarged diagram at this utility model embodiment earthed switch Figure 1A place。

In figure, 1, base；2, main shaft；3, driver plate；4, moving knife；5, switching-in spring；6, bearing pin；7, projection；8, bolster；9, insulator；10, spring base。

Detailed description of the invention

Below in conjunction with accompanying drawing, this utility model is described in further detail。

This specific embodiment is only to explanation of the present utility model; it is not to restriction of the present utility model; the present embodiment can be made the amendment not having creative contribution as required by those skilled in the art after reading this specification, but as long as being affected by the protection of Patent Law in right of the present utility model。

Embodiment 1: a kind of earthed switch, base 1, base 1 is fixed with 3 insulators 9, at piece main shaft 2 of base 1 lower horizontal articulation, fixed conveyor plate 3 on main shaft 2, main shaft 2 is also cased with 3 groups of moving knife 4, moving knife 4 and driver plate 3 are pressed close to, moving knife 4 lower end is equipped with bearing pin 6, switching-in spring 5 is fixedly connected on this bearing pin 6 by a spring base 10, the projection 7 for lifting bearing pin 6 is had in driver plate 3 projection, it is provided with bolster 8 between described bearing pin 6 and projection 7, bolster 8 is utilized to pad between bearing pin 6 and projection 7, bearing pin 6 and both projections 7 is avoided directly to conflict, and then deform because load is excessive, abrasion, there is good buffering effect, significantly extend the service life of earthed switch。

Embodiment 2: a kind of earthed switch, base 1, base 1 is fixed with 3 insulators 9, at piece main shaft 2 of base 1 lower horizontal articulation, fixed conveyor plate 3 on main shaft 2, main shaft 2 is also cased with 3 groups of moving knife 4, moving knife 4 and driver plate 3 are pressed close to, moving knife 4 lower end is equipped with bearing pin 6, switching-in spring 5 is fixedly connected on this bearing pin 6 by a spring base 10, the projection 7 for lifting bearing pin 6 is had in driver plate 3 projection, it is provided with bolster 8 between described bearing pin 6 and projection 7, described switching-in spring 5 upper end is fixed with plastic spring base 10, this spring base 10 is enclosed within outside bearing pin 6, and keep spring base 10 and bearing pin 6 hinged, bolster 8 is arranged on this spring base 10。Bolster 8 is one-body molded with spring base 10, and this bolster 8 is closely connected with bearing pin 6。Bolster 8 projection height on spring base 10 is more than bearing pin 6 projection height on spring base 10。Ensure the isolation between bearing pin 6 and boss, it is to avoid because alignment error causes that bolster 8 lost efficacy。

Claims

1. an earthed switch, including: base (1), horizontally hinged main shaft (2) on base (1), it is fixed on the driver plate (3) on main shaft (2), it is enclosed within the moving knife (4) on main shaft (2) and the switching-in spring (5) being connected with moving knife (4)；Moving knife (4) is equipped with bearing pin (6), switching-in spring (5) is fixedly connected on this bearing pin (6), the projection (7) for lifting bearing pin (6) is had in driver plate (3) projection, it is characterised in that: it is provided with bolster (8) between described bearing pin (6) and projection (7)。

2. earthed switch according to claim 1, it is characterized in that: described switching-in spring (5) upper end is fixed with plastic spring base (10), this spring base (10) is enclosed within bearing pin (6) outward, and keeping spring base (10) and bearing pin (6) hinged, bolster (8) is arranged on this spring base (10)。

3. earthed switch according to claim 2, it is characterised in that: bolster (8) is one-body molded with spring base (10)。

4. earthed switch according to claim 3, it is characterised in that: this bolster (8) is closely connected with bearing pin (6)。

5. earthed switch according to claim 4, it is characterised in that: the protruding height on spring base (10) of bolster (8) is more than the protruding height on spring base (10) of bearing pin (6)。