CN203119677U - Increased safety explosion-proof junction box structure - Google Patents

Abstract

Provided is an increased safety explosion-proof junction box structure, comprising a cover plate cover plate and a box body. A support plate is disposed in the box body. U-phase copper bars, V-phase copper bars, and W-phase copper bars are arranged in a stair-step shape and are fixed on the support plate through fasteners. Insulating plates are disposed among the U-phase copper bars, the V-phase copper bars, and the W-phase copper bars. The U-phase copper bars, the V-phase copper bars, and the W-phase copper bars are configured in the stair-step shape, so connecting operation of an external power line and a wiring copper busbar is convenient. A weak current circuit is disposed through a wiring channel, preventing the weak current circuit from being damaged caused by scratch. A grid plate of the explosion-proof junction box structure is added with comb-shaped reeds, contacts between the box body and the cover plate are increased, contact resistance between the grid plate and the cover plate is reduced, thereby enhancing shielding effect.

Description

Increased safety explosion-proof junction box structure

technical field

The utility model belongs to the technical field of motors and relates to an increased safety type explosion-proof junction box structure.

Background technique

The U, V, and W three-phase wiring copper bars of the existing increased safety explosion-proof junction box are arranged in sequence in the vertical direction where the power line is connected, which makes it extremely inconvenient to operate when bolts are used to connect and fix the wiring; the weak current part of the wiring inside the junction box The parts passing through the strong current are fixed with binding straps, which makes the weak current lines vulnerable to scratches and damage; in addition, the strong and weak current parts of the junction box are isolated by partitions, which has poor shielding effect.

Contents of the invention

The purpose of the utility model is to provide an increased safety explosion-proof junction box structure, which solves the problem of inconvenient operation in the prior art.

The purpose of this utility model is achieved in this way. The safety-increased explosion-proof junction box structure includes a cover plate and a box body. The box body is provided with a support plate, and the U-phase copper row, V-phase copper row and W-phase copper row are arranged in a stepped shape The cloth is fixed on the support plate by fasteners, and an insulating plate is arranged between the U-phase copper bar, the V-phase copper bar, and the W-phase copper bar.

The utility model is also characterized in that:

The supporting plate is provided with a wiring trough, which is fixed on the supporting plate through an insulating plate, and the weak current line passes through the wiring trough.

It also includes a grid plate, on which comb-shaped reeds are arranged, and the grid plate is in contact with the cover plate through the comb-shaped reeds.

It also includes a grounding copper bar, and the grounding copper bar is fixed on the support plate by a fastener.

The utility model has the following beneficial effects: the U-phase copper bar, the V-phase copper bar and the W-phase copper bar of the utility model are arranged in a ladder shape, which facilitates the connection operation of the external power line and the wiring copper bar; the weak current copper bar of the utility model The wiring is set through the wiring groove, which avoids the damage of the weak current wiring due to scratches; the grid plate of the utility model is equipped with a comb-shaped reed, which increases the contact point between the box body and the cover plate, and reduces the The contact resistance between the grid plate and the cover plate enhances the shielding effect.

Description of drawings

Fig. 1 is a structural schematic diagram of an increased safety type explosion-proof junction box of the utility model;

Fig. 2 is a side view of Fig. 1;

Fig. 3 is a schematic diagram of the grid plate of the utility model increased safety type explosion-proof junction box structure;

Fig. 4 is a top view of Fig. 3;

In the figure, 1. Cover plate, 2. Box body, 3. Terminal head, 4. Grid plate, 5. Grounding copper bar, 6. Grounding block, 7. Wiring trough, 8. U-phase copper bar, 9 . Support plate, 10. Insulation board, 11. W-phase copper bar, 12. V-phase copper bar, 13. Comb-shaped reed.

Detailed ways

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

Increased safety explosion-proof junction box structure, including cover plate 1 and box body 2, box body 2 is provided with support plate 9, support plate 9 is fixedly connected with box body 2 through bolts, U-phase copper bar 8, V-phase copper bar 12 and W-phase copper bars 11 are arranged in steps and fastened on the support plate 9 by bolts, nuts and washers, and insulating plates are arranged between U-phase copper bars 8, V-phase copper bars 12, and W-phase copper bars 11 10. Electrical isolation is achieved through insulating boards.

The support plate 9 is provided with a wiring trough 7 , the wiring trough 7 is fixed on the support plate 9 through the insulating plate 10 , and the weak current circuit is laid through the wiring trough 7 .

The box body 2 is provided with a cover plate 1 , and the box body 2 is provided with a grid plate 4 . The grid plate 4 is provided with a comb-shaped reed 13 , and the grid plate 4 is in contact with the cover plate 1 through the comb-shaped reed 13 . The grid plate 4 is connected to the box body 2 through 8 hexagon socket head cap screws 4, and the comb-shaped reed 13 is fixedly connected to the grid plate 4 through bolts;

The lead wires of the grounding copper bar 5 are connected to the grounding block 6 through bolts.

The lug 3 is connected to the U-phase copper bar 8 , the V-phase copper bar 12 and the W-phase copper bar 11 through bolts.

The U-phase copper bar, V-phase copper bar, and W-phase copper bar of the utility model are distributed in a ladder shape on the spatial layout, which makes the connection operation between the external power line and the wiring copper bar more convenient;

The utility model is provided with a wiring groove in the strong current part, and the weak current circuit can be laid through the wiring groove, which can effectively protect the weak current circuit from being scratched.

The grid plate of the utility model is provided with a comb-shaped reed, which increases the contact point between the cover plate and the box body, reduces the contact resistance between the grid plate and the cover plate, and enhances the shielding effect.

Claims (4)

1. The structure of the increased safety explosion-proof junction box is characterized in that it includes a cover plate (1) and a box body (2), and the box body (2) is provided with a support plate (9) and a U-phase copper bar (8) , V-phase copper bars (12) and W-phase copper bars (11) are arranged in steps and fixed on the support plate (9) by fasteners, the U-phase copper bars (8), V-phase copper bars An insulating plate (10) is provided between the row (12) and the W-phase copper row (11). 2. The increased safety type explosion-proof junction box structure according to claim 1, characterized in that: the support plate (9) is provided with a wiring trough (7), and the wiring trough (7) passes through the insulating plate ( 10) It is fixed on the support plate (9), and the weak current line passes through the wiring groove (7). 3. The increased safety explosion-proof junction box structure according to claim 1 or 2, characterized in that: it also includes a grid plate (4), and the grid plate (4) is provided with comb-shaped reeds (13) , the grid plate (4) is in contact with the cover plate (1) through the comb-shaped reed (13). 4. The increased safety explosion-proof junction box structure according to claim 3, characterized in that: it also includes a grounding copper bar (5), and the grounding copper bar (5) is fixed on the support plate (9) by fasteners )superior.

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