CN204361562U - A kind of 1/2 unit drawer side outgoing line circuit separated time switching device of low-voltage drawing out type electric power distribution cabinet - Google Patents

Abstract

The utility model discloses a side outlet circuit splitting device for a 1/2 unit drawer of a low-voltage withdrawable switch distribution cabinet, which comprises a bottom case, a left cover plate and a right cover plate arranged on the upper end of the bottom case, and a left cover The bottom cover, the left cover and the right cover are all made of plastic materials, and the left cover and the right cover are snap-fitted with the bayonet on the side of the bottom case through plastic buckles. The thickness of the entire circuit branching adapter device is ≤40mm; one side of the bottom shell is fixed with an outlet terminal box, and the outlet terminal box is fixed with two rows of first outlet terminals arranged vertically and a row of second outlet terminals arranged horizontally. The above-mentioned technical scheme compresses the thickness space as much as possible, and the electrical and insulation performance of the all-plastic shell is greatly improved. There is an outlet terminal box on the side, which is convenient for fixing the primary and secondary outlet terminals on the side. The structure design is reasonable, simple in structure, and the thickness space is small. The processing cycle is short and the production cost is reduced.

Description

A side outgoing line circuit branching transfer device for a 1/2 unit drawer of a low-voltage withdrawable switch distribution cabinet

technical field

The utility model relates to the technical field of a low-voltage withdrawable switch distribution cabinet, in particular to a side outlet circuit splitting device for a 1/2 unit drawer of a low-voltage withdrawable switch distribution cabinet.

Background technique

1/2 unit drawer circuit branching adapter device is one end connected to the vertical busbar of the MCC cabinet in the power distribution cabinet through the incoming line socket, and the other end is matched with two pull-out drawers, so as to be converted into two incoming lines and two outgoing lines for use A special circuit branching transfer device in a low-voltage withdrawable switch distribution cabinet. According to the design requirements of electrical appliances, there are three-phase or three-phase four-wire switching devices, and there are A, B, C three-phase and A, B, C, N three-phase four-wire two types in the circuit branching switching device. kind of wiring.

At present, the circuit branching adapter device with an outgoing current of 100A and above (hereinafter referred to as the adapter device) adopts a metal shell structure. This structure type 1/2 unit drawer circuit branching adapter device is used for GCK low-voltage complete switchgear and economical Type MNS and GCS type cabinets. Since the metal structure transition device needs to ensure sufficient electrical clearance, insulation distance, and insertion depth, its thickness is designed to be relatively thick, so that for a 1/2 unit drawer with a small space, it can The use of depth space is reduced. The thickness of the existing side outlet circuit branching switch is generally about 85mm, and the metal shell is wrapped with a plastic insulator structure, which increases the cost and has a long processing cycle, which is not conducive to mass production.

Contents of the invention

Aiming at the deficiencies of the existing technology, the purpose of this utility model is to provide a 1/2 unit drawer of a low-voltage withdrawable switch distribution cabinet with reasonable structural design, simple structure, small thickness and space, low production cost and short processing cycle. Side outlet circuit branch line transfer device.

In order to achieve the above purpose, the utility model provides the following technical solutions: a side outgoing line circuit splitting device for a 1/2 unit drawer of a low-voltage withdrawable switch distribution cabinet, including a bottom case and a left side set on the upper end of the bottom case The cover plate and the right cover plate, the left cover plate and the right cover plate are interlocked, the bottom shell, the left cover plate and the right cover plate are all made of plastic materials, the left cover plate and the right cover plate are Both are provided with guide pins, plug-in fixing square holes and upper ventilation holes, and the sides of the left cover and the right cover are uniformly provided with plastic buckles for connecting the bottom case, and the sides of the bottom case are provided with The bayonet matching the buckle, the thickness of the entire circuit branching adapter device after the plastic buckle and the bayonet joint of the left cover and the right cover are ≤ 40mm; the side of the bottom shell An outgoing line terminal box is fixedly provided with two rows of first outgoing line terminals arranged vertically and a row of second outgoing line terminals arranged horizontally on the outgoing line terminal box, and a terminal support frame is fixedly arranged on the side wall of the bottom case, The second outlet terminal is fixedly installed on the terminal support frame.

By adopting the above-mentioned technical scheme, the shell of the side outlet circuit branching adapter device is designed to be all plastic, which compresses the thickness space as much as possible, and the electrical and insulation performance of the all plastic shell is greatly improved. There is an outlet terminal box on the side, which is convenient for fixing a , Secondary outgoing terminal, reasonable structural design, simple structure, small thickness space, short processing cycle, and reduced production cost.

The utility model is further configured as follows: the inner cavity of the bottom shell is provided with an incoming busbar group, a support block, an outgoing line straight row and an insulating support spacer, and one end of the incoming busbar group is provided with a movable connection device, and the movable connection The device includes a conductive post and an incoming line insert set, the conductive post is provided with a pair of arc-shaped grooves, and the incoming line insert set is provided with a pair of arc-shaped convex surfaces matching the arc-shaped recess. Through this setting, the components in the inner cavity of the bottom shell are arranged reasonably and connected reliably.

The utility model is further configured as follows: the side of the bottom shell is provided with side ventilation holes and cover plate positioning bosses, and the left and right ends of the upper part of the bottom shell are provided with fixing screw holes. Through this setting, the structure of the bottom shell is more reasonable, the connection is convenient, and the ventilation effect is good.

The utility model is further configured as follows: the incoming busbar group is composed of multiple incoming busbars, and each incoming busbar is provided with at least one riveting round hole, and the conductive column is riveted with the incoming busbar through the riveting round hole, And the left and right ends of each incoming busbar are provided with limiting notches. Through this setting, the limit notch cooperates with the corresponding structure provided on the bottom case, which can effectively fix the incoming busbar group.

The utility model is further configured as follows: one end of the outgoing line is provided with a socket port, the middle of the outgoing line is provided with a first limiting structure, and the other end of the outgoing line is provided with a screw mounting hole. With this setting, the outlet line structure is reasonably set and the connection is convenient.

The utility model has the advantages that: compared with the prior art, the structure of the utility model is reasonably arranged, and the shell of the side outgoing line circuit branching adapter device is designed to be all plastic, which compresses the thickness space as much as possible, and the all plastic shell is electrically and insulated The performance is greatly improved. There is an outgoing terminal box on the side, which is convenient for fixing the primary and secondary outgoing terminals on the side. The structure design is reasonable, the structure is simple, the thickness space is small, the processing cycle is short, and the production cost is reduced.

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

Description of drawings

Fig. 1 is the explosion schematic diagram of the utility model embodiment;

Fig. 2 is the structural representation of the utility model embodiment;

Fig. 3 is the structure schematic diagram two of the utility model embodiment (concealed left and right cover plate and outlet terminal box);

Fig. 4 is a schematic structural view of the incoming busbar and the movable connection device of the embodiment of the utility model;

Fig. 5 is a structural schematic diagram of the incoming busbar of the utility model embodiment;

Fig. 6 is a schematic structural view of a conductive column according to an embodiment of the present invention;

Fig. 7 is a schematic structural view of the incoming line insert group according to the embodiment of the present invention;

Fig. 8 is a structural schematic diagram of the straight line arrangement of the embodiment of the utility model.

Detailed ways

Referring to Fig. 1 to Fig. 8, the utility model discloses a 1/2 unit drawer side outlet line branching transfer device for a low-voltage withdrawable switch distribution cabinet, which includes a bottom case 1 and a left side set on the upper end of the bottom case 1 The cover plate 2 and the right cover plate 3, the left cover plate 2 and the right cover plate 3 are interlocked to form the upper cover of the bottom case, and the bottom case 1, the left cover plate 2 and the right cover plate 3 are all made of plastic materials. The left cover plate 2 and the right cover plate 3 are provided with guide pins 4, plug-in fixing square holes 5 and upper ventilation holes 6, and the sides of the left cover plate 2 and the right cover plate 3 are uniformly provided with holes for connecting The plastic buckle 7 of the bottom case, the side of the bottom case 1 is provided with a bayonet 8 matching the plastic buckle 7, the left cover 2 and the right cover 3 are connected to the bottom case 1 through the plastic buckle 7 After the bayonet socket 8 on the side is snap-fitted, the thickness of the entire side outgoing line circuit branching adapter device is ≤40mm; one side of the bottom case 1 is fixedly provided with an outgoing line terminal box 9, and the outgoing line terminal box 9 is fixedly provided with two rows of A first outgoing line terminal 91 arranged vertically and a row of second outgoing line terminals 92 arranged horizontally, a terminal support frame 93 is fixedly arranged on the side wall of the bottom case 1, and the second outgoing line terminal 92 is fixedly installed on the terminal support Rack 93.

The guide pin 4 and the left cover plate 2 and/or the right cover plate 3 are fixed or integrated by welding; the outlet terminal box 9 is connected and fixed with the right cover plate 3 or the right end surface of the bottom case 1 by screws; the first outlet terminal 91 The outlet terminal box 9 is connected and fixed with screws; the terminal support frame 93 is connected with the bottom case 1, and the second outlet terminal 92 and the terminal support frame 93 are also fixed with screws.

In order to make the structure of the utility model more reasonable, as a preference, the inner cavity of the bottom shell 1 described in this embodiment is provided with an incoming busbar group 10, a support block 11, an outgoing line straight row 12 and an insulating support spacer 13. One end of the incoming busbar group 10 is provided with a movable connection device, which includes a conductive column 14 and an incoming line insert set 15. A pair of arc-shaped grooves 141 are arranged on the conductive post 14, and the incoming line insert set 15 is provided with a pair of arc-shaped convex surfaces 151 matching the arc-shaped grooves 141 .

A secondary plug-in 16 is arranged between the left cover 2 and the right cover 3 and the bottom case 1, and the secondary plug-in 16 is plugged and fixed with the plug-in fixing square hole 5; 11 is cooperatingly installed in the existing line inlet slot on the bottom case 1. Side ventilation holes 17 and cover plate positioning bosses 18 are provided on the side of the bottom case 1 , and fixing screw holes 19 are provided at the left and right ends of the upper part of the bottom case 1 .

The incoming busbar group 10 is composed of a plurality of incoming busbars 101, and each incoming busbar 101 is provided with at least one riveting round hole 102, and the conductive column 14 is riveted with the incoming busbar 101 through the riveting round hole 102, and Limiting notches 103 are provided at the left and right ends of each incoming busbar 101 . The limit notch 103 cooperates with the existing corresponding structure on the bottom case 1, and can effectively fix the incoming line busbar group 10; and the two ends of the incoming line busbar group 10 are provided with existing 1/2 drawer incoming line plugs The socket row is reliably connected to the incoming bus bar 101 by welding (or riveting).

One end of the outgoing line 12 is provided with a socket port 121 , the middle of the outgoing line 12 is provided with a first limiting structure 122 , and the other end of the outgoing line 12 is provided with a screw mounting hole 123 . Outlets are arranged in a straight line 12 into a "Z" shape, made of a straight copper plate, without connecting points in the middle, which can effectively reduce temperature rise and improve electrical conductivity.

The structure of the utility model is rationally arranged, and the shell of the side outlet circuit splitting switch device is designed to be all plastic, which compresses the thickness space as much as possible, and the electrical and insulation performance of the all plastic shell is greatly improved. The side is equipped with an outlet terminal box, which is convenient for side fixing. The primary and secondary outlet terminals have reasonable structural design, simple structure, small thickness space, short processing cycle, and reduced production costs.

The specific description of the utility model in the foregoing embodiments is only used to further illustrate the utility model, and cannot be interpreted as limiting the protection scope of the utility model. Technical engineers in the field make some non-essential modifications to the utility model according to the content of the utility model Improvements and adjustments all fall within the protection scope of the present utility model.

Claims (5)

1. A 1/2 unit drawer of a low-voltage withdrawable switch power distribution cabinet uses a side outlet circuit branching device, including a bottom case (1) and a left cover (2) arranged on the upper end of the bottom case (1) and The right cover (3), the left cover (2) and the right cover (3) are fastened together, characterized in that: the bottom case (1), the left cover (2) and the right cover (3 ) are made of plastic materials, and the left cover (2) and the right cover (3) are provided with guide pins (4), plug-in fixing square holes (5) and upper ventilation holes (6), and The sides of the left cover (2) and the right cover (3) are uniformly provided with plastic buckles (7) for connecting the bottom case, and the sides of the bottom case (1) are provided with the plastic buckles (7). ) matching bayonet (8), the left cover (2) and right cover (3) are snap-fitted with the bayonet (8) on the side of the bottom case (1) through the plastic buckle (7) and the whole The thickness of the branching device for the side outgoing line circuit is ≤40mm; one side of the bottom case (1) is fixedly provided with an outgoing line terminal box (9), and the outgoing line terminal box (9) is fixedly provided with two rows of longitudinally arranged first The outgoing line terminal (91) and a row of second outgoing line terminals (92) arranged horizontally, a terminal support frame (93) is fixedly arranged on the side wall of the bottom case (1), and the second outgoing line terminal (92) is fixed Install on the terminal support frame (93). 2. A 1/2 unit drawer side outlet circuit branching adapter device for a low-voltage withdrawable switch distribution cabinet according to claim 1, characterized in that: the inner cavity of the bottom case (1) is set There are incoming busbar groups (10), support blocks (11), outgoing line straight rows (12) and insulating support spacers (13). One end of the incoming busbar group (10) is provided with a movable connection device, and the movable connection device It includes a conductive post (14) and an incoming line insert set (15), the conductive post (14) is provided with a pair of arc-shaped grooves (141), and the incoming line insert set (15) is provided with a pair of The arc convex surface (151) matched by the arc groove (141). 3. According to claim 1 or 2, a 1/2 unit drawer of a low-voltage withdrawable switch distribution cabinet uses a side-outlet circuit branching device, characterized in that: the side of the bottom case (1) is set There are side ventilation holes (17) and cover plate positioning bosses (18), and fixing screw holes (19) are arranged at the left and right ends of the upper part of the bottom case (1). 4. A side outgoing line circuit splitting device for a 1/2 unit drawer of a low-voltage withdrawable switch distribution cabinet according to claim 2, characterized in that: the incoming busbar group (10) consists of multiple Each incoming busbar (101) is composed of at least one riveting round hole (102), and the conductive column (14) is riveted with the incoming busbar (101) through the riveting round hole (102). , and each incoming bus bar (101) is provided with limiting notches (103) at the left and right ends. 5. A side outgoing line circuit branching adapter device for a 1/2 unit drawer of a low-voltage withdrawable switch distribution cabinet according to claim 4, characterized in that: one end of the outgoing line straight row (12) is provided with a socket In the port (121), a first limiting structure (122) is provided in the middle of the outgoing line (12), and a screw mounting hole (123) is provided at the other end of the outgoing line (12).