CN203367125U

CN203367125U - Switch moving blade

Info

Publication number: CN203367125U
Application number: CN 201320450775
Authority: CN
Inventors: 李水胜; 刘桂华; 侯峰
Original assignee: Beihai Galaxy Switch Devices Co Ltd
Current assignee: Beihai Galaxy Switch Devices Co Ltd
Priority date: 2013-07-27
Filing date: 2013-07-27
Publication date: 2013-12-25
Anticipated expiration: 2023-07-27

Abstract

The utility model discloses a switch moving blade. The switch moving blade relates to the medium-high voltage electric appliance manufacture technology field, and comprises a left moving blade voltage-sharing member, a right moving blade voltage-sharing member, a left moving blade, a right moving blade, moving blade supporting members, moving blade pins, a moving blade connecting lever, connecting bolts, fastening nuts and disc springs. The left and right moving blade voltage-sharing members are both hemispherical structures and are equipped with a plurality of holes, and the left and right moving blades are both equipped with a plurality of holes in one-to-one correspondence with the left and right moving blade voltage-sharing members. The moving blade supporting members are arranged between the left and right moving blades, and the moving blade connecting lever connects the left and right moving blades together via the moving blade pins. The connecting bolts, the fastening nuts and the disc springs are arranged inside the left and right moving blade voltage-sharing members, each disc spring is composed of a plurality of sheets, and the left moving blade voltage-sharing member, the right moving blade voltage-sharing member, the left moving blade and the right moving blade are riveted into an entirety. According to the utility model, the problems that the switch moving blade is easy to generate an insulating flash-over, and is poor in dielectric strength and environment adaptive capacity and severe in partial discharge can be solved.

Description

A kind of switch moving knife

Technical field

The utility model relates to mesohigh electrical equipment manufacturing technology field, especially a kind of switch moving knife that can be used for on-load switch, isolating switch and earthed switch.

Background technology

In the medium voltage switchgear equipment field, isolation earthing switch in switchgear generally adopts revolving knife switch form, in SF6 gas-insulated ring network cabinet, knife switch is mixed suitable arc-extinction device and can also be used as on-load switch, the form of knife switch is simple in structure with it, the characteristics that cost is low obtain the extensive employing of industry, although slightly different on the form structure of the switch moving knife of the upper die pressing product of existing market, but its structure is similar, it has consisted essentially of moving knife, strutting piece, compression spring, bolt, nut, due to bolt, nut and compression spring are difficult to avoid itself has wedge angle, after the switch moving knife of its formation is charged, relatively strong with alternate electric field over the ground, this is for air insulation or the gas isolated product of SF6, because distance alternate and over the ground is larger, the wedge angle on switch moving knife surface does not need its dielectric strength of what special processing still can meet the demands, but along with in recent years, middle die pressing product is gradually towards the future development of miniaturization, especially current, solid insulation ring main unit becomes a Hot spots for development, the product design size is further dwindled, the switch moving knife generally is assembled in an insulating cylinder, as isolating switch and earthed switch, use, the switch moving knife is very little from the distance of insulating surface, the problem of switch moving knife edge spike is just very obvious on the impact of switch product insulating capacity, especially insulated outer surface requires the product of spraying ground plane, to the edge spike of switch moving knife, all press processing just to become essential.There is wedge angle in the surface of switch moving knife, with regard to the problem that easy generation insulation sudden strain of a muscle is ironed, dielectric strength is poor, adaptive capacity to environment is poor, partial discharge is serious.

The utility model content

The purpose of this utility model is to provide a kind of switch moving knife, and it can solve the problem that easy generation insulation sudden strain of a muscle is ironed, dielectric strength is poor, adaptive capacity to environment is poor, partial discharge is serious.

In order to address the above problem, the technical solution adopted in the utility model is: this switch moving knife, comprise the left moving knife and the right moving knife that are provided with installing hole, and the moving knife strutting piece, the moving knife pin, have the equal casting die of left moving knife and the equal casting die of right moving knife of fixing hole; The equal casting die of described left moving knife is connected with described left moving knife, and the equal casting die of described right moving knife is connected with described right moving knife; Be provided with described moving knife strutting piece and described moving knife pin between described left moving knife and described right moving knife; Described left moving knife and described right moving knife link together by the securing member inserted in its installing hole; Within described securing member two ends all are in the fixing hole of the equal casting die of described left moving knife and the equal casting die of right moving knife.

In technique scheme, more specifically scheme can also be: the equal casting die of described left moving knife and the equal casting die of described right moving knife are the hemisphere face structure; Described securing member is by connecting bolt, and clamp nut and dish spring form; Described dish spring consists of multi-disc.

Further: the equal casting die of described left moving knife and described left moving knife are integral by riveting; The equal casting die of described right moving knife and described right moving knife are integral by riveting.

Further: the equal casting die of described left moving knife and described left moving knife; The equal casting die of described right moving knife and described right moving knife are made by conductive material integral body.

Owing to having adopted technique scheme, compared with prior art, the beneficial effect had is the utility model:

1, owing to having adopted this switch moving knife, the switch moving knife over the ground or electric field between phase and phase obviously optimized, switch product dielectric strength is better, can reduce distance alternate and relatively, is convenient to the realization of the miniaturization of switchgear.

2, this switch moving knife can be assembled separately, is not subject to the restriction of final assembling, and switch moving knife pressure is easy to adjust, precise control.

The accompanying drawing explanation

Fig. 1 is that switch moving knife master looks schematic diagram.

Fig. 2 is switch moving knife cross-sectional schematic.

Embodiment

Below in conjunction with drawings and Examples, the utility model is described in further detail:

The switch moving knife of Fig. 1, Fig. 2, after the equal casting die 1 of left moving knife, left moving knife 2 and the equal casting die 9 of right moving knife, the 10 difference moulding of right moving knife, by on the hole on the equal casting die 1 of left moving knife and the equal casting die 9 of right moving knife and left moving knife 2 and right moving knife 10 with the equal casting die 1 of left moving knife and the equal casting die 9 of right moving knife on hole one to one hole rivet be processed into as a whole, (can, with the material monolithic moulding preferably of complete conductive capability, not needing riveted joint) yet.Moving knife connecting lever 8 is assemblied between left moving knife 2 and right moving knife 10 by moving knife pin 7, for be connected use with external agency; Moving knife strutting piece 4 is arranged between left moving knife 2 and right moving knife 10, is used for controlling the distance between left moving knife 2 and right moving knife 10; Dish spring 3, for multi-disc is used in combination, is used for guaranteeing switch moving knife pressure use, thereby comes the decrement of regulation disc spring 3 to realize the requirement of different pressures by connecting bolt 5 and the clamp nut 6 be arranged in the equal casting die 9 of the equal casting die 1 of left moving knife and right moving knife.

The switch moving knife assembled, its connecting bolt 5, clamp nut 6 and dish spring 3 are all in the equal casting die 1 of left moving knife and the equal casting die of right moving knife 9 inside, whole switch moving knife is similar to a spheroidal structure, last the more complete switch moving knife of assembling is assembled in the middle of the switch product, as on-load switch, the moving knife of isolating switch or earthed switch is used.

Claims

1. a switch moving knife, comprise the left moving knife (2) and the right moving knife (10) that are provided with installing hole, moving knife strutting piece (4), and moving knife pin (7) is characterized in that: also comprise the equal casting die of left moving knife (1) and the equal casting die of right moving knife (9) that have fixing hole; The equal casting die of described left moving knife (1) is connected with described left moving knife (2), and the equal casting die of described right moving knife (9) is connected with described right moving knife (10); Be provided with described moving knife strutting piece (4) and described moving knife pin (7) between described left moving knife (2) and described right moving knife (10); Described left moving knife (2) and described right moving knife (10) link together by the securing member inserted in its installing hole; Within described securing member two ends all are in the fixing hole of the equal casting die of described left moving knife (1) and the equal casting die of right moving knife (9).

2. switch moving knife according to claim 1, it is characterized in that: the equal casting die of described left moving knife (1) and the equal casting die of described right moving knife (9) are the hemisphere face structure; Described securing member is by connecting bolt (5), and clamp nut (6) and dish spring (3) form; Described dish spring (3) consists of multi-disc.

3. switch moving knife according to claim 1 and 2 is characterized in that: the equal casting die of described left moving knife (1) is integral by riveting with described left moving knife (2); The equal casting die of described right moving knife (9) and described right moving knife (10) are integral by riveting.

4. switch moving knife according to claim 1 and 2, is characterized in that: the equal casting die of described left moving knife (1) and described left moving knife (2); The equal casting die of described right moving knife (9) and described right moving knife (10) are made by conductive material integral body.