CN104020433B - A kind of metering low-voltage current mutual inductor punching mechanism - Google Patents

Abstract

The present invention relates to a kind of metering low-voltage current mutual inductor punching mechanism, the punching mechanism includes general basic platform (1), guide rail (2), punching copper bar (3), guiding gripping block (4), described guide rail (2) is fixed on basic platform (1) upper surface, described punching copper bar (3) is arranged on guide rail (3) both sides, and described guiding gripping block (4) is arranged on punching copper bar (3) both sides.Compared with prior art, the present invention has the advantages that simple structure, modularity, highly versatile.

Description

A piercing mechanism for low-voltage current transformers for metering

technical field

The invention relates to a device for testing a current transformer, in particular to a through-hole mechanism for a low-voltage current transformer for measurement.

Background technique

The current transformer used in the power grid is to reduce the large current in the primary line to the small current required by the secondary measurement circuit, and mainly realize the functions of electrical isolation and proportional measurement at both ends of the high and low voltage. The current transformer for metering is one of the main measuring instruments used in the settlement of electric energy trade, and it belongs to the national compulsory verification specification. Each metering current transformer needs to pass the initial verification and periodic verification before it can be used normally.

On the existing current transformer verification assembly line, generally speaking, each detection station is equipped with a corresponding matching detection device. Due to the large number of transformer detection items, multiple sets of different equipment are required for verification. When performing these verifications It takes a lot of time to manually connect and disconnect the wires, which has become the main bottleneck to improve the efficiency of transformer verification.

Contents of the invention

The object of the present invention is to provide a thread-through mechanism for low-voltage current transformers for metering with simple structure, modularization and strong versatility in order to overcome the above-mentioned defects in the prior art.

The purpose of the present invention can be achieved through the following technical solutions: a core-through mechanism for a low-voltage current transformer for metering, the core-through mechanism includes a general basic platform, a guide rail, a core-through copper bar, and a guide clamping block, and the guide rail is fixed On the upper surface of the common basic platform, the copper feed-through bars are arranged on both sides of the guide rail, and the guide clamping blocks are arranged on both sides of the copper feed-through bars.

The general basic platform includes a rectangular support, an electrical measuring instrument installation board arranged in the rectangular support, and a working platform arranged on the top of the rectangular support; the guide rail is arranged on the working platform.

The through-core copper bar includes a fixed plate arranged on both sides of the guide rail, a copper bar arranged on the fixed plate, and a plurality of rollers arranged under the copper bar.

The fixed plate is fixed on the common basic platform; the two ends of the copper bar are provided with connecting blocks connected with other stations.

The guide clamping block includes a support rod, a rotating shaft, a splint, and a collet; the support rod is fixed on the fixing plate, and one end of the splint is connected to the top of the support rod through the rotating shaft, and the other end is connected to the collet.

The collet includes a connecting block, a lifting rod and jaws. The connecting block is fixed on the splint, and there are slide grooves on both sides thereof. The lifting rod is clamped on the sliding groove and can go up and down along the sliding groove. Move, the jaws are fixed on the lifting rod.

Compared with the prior art, the mechanism of the present invention is used on the low-voltage current transformer insulation withstand voltage and error verification device to locate the tray containing the transformer conveyed by the assembly line, and to position the tray and transformer for Insulation withstand voltage or error verification. Has the following advantages:

1. The appearance is more neat and beautiful, which is convenient for production, assembly, replacement and transportation.

2. The structure adopts modular design, which makes installation and debugging more convenient. This enables the standardization of various parts and facilitates assembly and replacement of spare parts.

3. The core-through mechanism is supported by the "universal reference platform" module, and the synchronous belt is used to drive the core-through copper bar, which makes the mechanical structure simpler and more compact.

4. Reasonably arrange electrical and electrical measuring devices inside the general platform. In this way, not only the overall structure is beautiful in appearance, but also the integrated wiring is regular.

Description of drawings

Fig. 1 is the top view of structure of the present invention;

Fig. 2 is the side view of structure of the present invention;

Fig. 3 is another side view of the structure of the present invention.

detailed description

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

Example

As shown in Figures 1-3, a core-through mechanism for low-voltage current transformers for metering, the core-through mechanism includes a general-purpose basic platform 1, a guide rail 2, a core-through copper bar 3, and a guide clamping block 4. The guide rail 2 It is fixed on the upper surface of the common basic platform 1 , the copper feedthrough 3 is arranged on both sides of the guide rail 2 , and the guide clamping block 4 is arranged on both sides of the copper feedthrough 3 .

The general basic platform 1 includes a rectangular support, an electrical measuring instrument installation board arranged in the rectangular support, and a working platform provided on the top of the rectangular support; the guide rail 2 is arranged on the working platform.

The through copper bar 3 includes a fixed plate 31 arranged on both sides of the guide rail 2 , a copper bar 32 arranged on the fixed plate, and a plurality of rollers 33 arranged below the copper bar 32 .

The fixing plate 31 is fixed on the universal base platform 1; the two ends of the copper bar 32 are provided with connection blocks connected with other stations.

The guide clamping block 4 includes a support rod 41, a rotating shaft 42, a splint 43, and a collet; the support rod 41 is fixed on the fixed plate 31, and one end of the splint 43 is connected to the support rod 41 through the rotating shaft 42 the top, and the other end attaches the collet.

The chuck includes a connecting block 441, a lifting rod 442 and a jaw 443. The connecting block 441 is fixed on the splint 43, and chute is provided on both sides thereof, and the lifting rod 442 is clamped on the chute And can move up and down along the chute, and the jaw 443 is fixed on the lifting rod 442 .

When the workpiece to be detected is transported to the guide rail 2, it is clamped on the copper bar 32 by the jaw 443, and the height of the jaw 443 is adjusted by the lifting rod 442 to adapt to different transformers, and the roller 33 under the copper bar 32 Its horizontal position is adjusted, and it is detected by the electric measuring instrument arranged in the general basic platform 1 .

Claims (3)

1. A low-voltage current transformer for metering is characterized in that the center-through mechanism includes a general-purpose base platform (1), a guide rail (2), a center-through copper bar (3), and a guide clamping block (4) , the guide rail (2) is fixed on the upper surface of the universal foundation platform (1), the through-hole copper bar (3) is arranged on both sides of the guide rail (2), and the guide clamping block (4) is arranged on the Both sides of the heart copper bar (3); Wherein, described through-hole copper bar (3) comprises the fixed plate (31) that is arranged on guide rail (2) both sides, the copper bar (32) that is set on the fixed plate, a plurality of rollers ( 33); The fixed plate (31) is fixed on the universal base platform (1); the two ends of the copper bar (32) are provided with connection blocks connected with other stations; The guide clamping block (4) includes a support rod (41), a rotating shaft (42), a splint (43), and a collet; the support rod (41) is fixed on the fixed plate (31), and the One end of the splint (43) is connected to the top of the support rod (41) through the rotating shaft (42), and the other end is connected to the collet. 2. The core-through mechanism for a low-voltage current transformer for metering according to claim 1, wherein said universal base platform (1) comprises a rectangular bracket, an electrical measuring instrument mounting plate arranged in the rectangular bracket . The working platform set on the top of the rectangular support; the guide rail (2) is set on the working platform. 3. The through-core mechanism for a low-voltage current transformer for metering according to claim 1, characterized in that, the chuck includes a connecting block (441), a lifting rod (442) and a jaw (443), the The connecting block (441) is fixed on the splint (43), with chute on both sides, the lifting rod (442) is clamped on the chute and can move up and down along the chute, the jaw (443) is fixed on the elevating rod (442).