CN2129480Y

CN2129480Y - Compact plug-in bus-bax groove

Info

Publication number: CN2129480Y
Application number: CN 92229438
Authority: CN
Inventors: 毛汉文; 张仁武
Original assignee: Shanghai Hydraulic Electrical Equipment Factory; HUADONG BUILDING DESIGN INST
Current assignee: Shanghai Hydraulic Electrical Equipment Factory; HUADONG BUILDING DESIGN INST
Priority date: 1992-07-31
Filing date: 1992-07-31
Publication date: 1993-04-07
Anticipated expiration: 2002-07-31

Abstract

The utility model relates to a compact plug-in bus groove, comprising a shell, a set of parallel flat conductive bodies arranged in the shell, insulated supporters and two plug-in ends arranged between the conductive bodies and the shell, wherein, one end comprises a connection end plate which extends from one end of the flat conductive body and whose top is provided with a notch, and the other end comprises a connection end plate which extends from the other end of the flat conductive body and conductive copper clamps which are arranged on the two surfaces of the connection end plates and are provided with center through holes. The flat conductive body is covered with an irradiation pvc insulation sheathing, so the utility model has the advantages of small contact resistance of the connecting ends, low temperature rising, good insulation property, energy saving, material saving, etc.

Description

Compact plug-in bus-bax groove

The utility model relates to the power transmission and distribution device of low-voltage electrical apparatus, relates in particular to a kind of intensive plug type bus duct.

Compare with traditional cable, plug type bus duct has advantage such as carry that electric current is big, flexible for installation, distribution construction and capital construction are not disturbed mutually, so be widely used in skyscraper, large and medium-sized enterprise and test places such as base.

Existing plug type bus duct adopts structure as shown in Figure 1, and it comprises one group of parallel flat electric conductor 1, insulating tape 2, metal shell 3, connects termination 4 and 5.Wherein, electric conductor 1 twines wrapping by the insulating tape 2 of for example mylar, polytetrafluoroethylene, varnished glass cloth or other material, realizes the electric insulation between each electric conductor 1.Connect

termination

4 and 5 comprise respectively again with electric conductor 1 equal number be connected dististyle 41 and 51.Fig. 2 represents above-mentioned bus duct, the connection status between groove and the groove.With the connection termination 5 of the connection termination 4 insertion groove B of groove A, make the dististyle 41 that respectively connects of groove A be single face contact shape, thereby corresponding dististyle 41 is electrically connected with 51 one-tenths with the dististyle 51 that respectively is connected of groove B, then do not separate between the dististyle accordingly by cross-over block 6.

Dististyle

41 and 51 top have groove, have two through holes (not shown) on the cushion block 6, double insulated bolt 7 is penetrated in the groove or through hole of

dististyle

41,51 and cushion block 6, and be encased inside elastic washer 8, just finished being electrically connected between groove A and the groove B behind the fastening bolt.

But the bus duct of said structure adopts single face to contact owing to connect

dististyle

41 and 51, and its contact resistance is bigger, the joint temperature rise.After adopting double bolted, though can reduce some contact resistances, be subjected to the destruction of thermal stress easily, especially joint is easy to stretch tight bad when short circuit.And conductor 1 is made moist easily by the wrapped bundle of insulating tape in the bus duct of said structure, can produce bigger leakage current each other, and insulation property are reduced, so, adopt the bus duct failure rate of this structure higher and useful life is shorter.

The purpose of this utility model be to provide a kind of volume little and carry that electric current is big, energy consumption is low, safe in utilization and intensive plug type bus duct that the life-span is long.

To achieve these goals, intensive plug type bus duct of the present utility model comprises housing, be arranged on one group of parallel flat electric conductor in the housing, be arranged on insulation support body and two grafting terminations between flat electric conductor and the housing by the insulating material coating.An above-mentioned grafting termination comprises the connection dististyle that has groove from the top of an extension of flat electric conductor; Above-mentioned another grafting termination comprises the connection dististyle that extends from flat electric conductor other end and is arranged on this conductive copper that is connected dististyle two sides and central through hole and presss from both sides; Above-mentioned insulating material in order to coating flat electric conductor is an irradiation polyvinyl chloride insulation sheath.

Adopt intensive plug type bus duct of the present utility model, owing to when two bus ducts are pegged graft, become two-sided contact by original single face contact between the corresponding connection dististyle, reduced the contact resistance of bus duct connection termination greatly, thereby the temperature rise of this junction is reduced, reduce energy consumption.And, to compare with the existing bus duct of same rated current specification, the electric conductor sectional area of bus duct of the present utility model can dwindle, thereby further can reduce the sectional dimension of bus duct, has saved material.In addition, the electric conductor overcoat irradiation polyvinyl chloride insulation sheath of bus duct, insulating barrier is seamless, so have the good insulation performance performance, and sheath is selected black material for use, improved the radiating efficiency of electric conductor, thereby further improved the safety in utilization of bus duct and further prolonged useful life of bus duct.

Below in conjunction with drawings and Examples intensive plug type bus duct of the present utility model is further described.

Fig. 1 is the structural representation of existing plug type bus duct.

Fig. 2 is the connection status schematic diagram between two bus ducts shown in Figure 1.

Fig. 3 is the front view of the intensive plug type bus duct of the utility model.

Fig. 4 is the vertical view of the intensive plug type bus duct of the utility model.

The structural representation of the cross-over block that Fig. 5 uses when being the grafting of the suitable the utility model intensity of expression plug type bus duct.

Referring to Fig. 3 and Fig. 4, intensive plug type bus duct of the present utility model comprises other material that housing 23(housing 23 can adopt metal material or have certain intensity), be arranged on one group of parallel flat electric conductor 21 in the housing 23, be arranged on the insulation support body 26 between electric conductor 21 and the housing 23, and grafting termination 24 and 25.Electric conductor 21 overcoat insulating sleeves 22, this insulating sleeve for example adopts the irradiation polyvinyl chloride, it has good insulation performance performance and very strong moistureproof ability, and sheath 22 preferably select for use black material and with electric conductor 21 tight connectings, can improve the radiating efficiency of electric conductor 21.

Grafting termination 24 comprises the connection dististyle 241 that has groove from the top of 21 1 extensions of electric conductor, and each connects and leaves gap 27 between the dististyle 241.Grafting termination 25 comprises the connection dististyle 251 that extends from electric conductor 21 other ends and is arranged on and be connected dististyle 251 two sides and the center has the conductive copper of through hole to press from both sides 252, and each connects and leaves gap 28 between the dististyle 215.Conductive copper folder 252 can be fixed on by for example rivet 254 and connect on the dististyle 251, and centre bore to the top central portion of conductive copper folder 252 has a slit 256.

The structural representation of the cross-over block that Fig. 5 uses when being the grafting of the suitable the utility model intensity of expression plug type bus duct.Referring to Fig. 5, the planar dimension of cross-over block 29 is slightly larger than the planar dimension of conductive copper folder 252 shown in Figure 3, and its center has through hole 290, has groove 291 around the centre bore.

When the grafting termination 24 of adopting article one bus duct of the present utility model is plugged into the grafting termination 25 of same employing second bus duct of the present utility model, connects dististyle 241 and insert just within the conductive copper folder 252 that connects dististyle 251 two sides that is placed in.28 places insert cross-over block 29 in the gap, again bolt is passed the centre bore of conductive copper folder 252 and cross-over block 29 and be connected the groove of dististyle 24 and tighten, make between connection dististyle 24 and the conductive copper folder 252 and form two-sided closely the contact, contact area doubles, contact resistance reduces greatly, compare with existing bus duct, its temperature rise can reduce about 10 ℃.Thereby, compare with the existing bus duct of same specification, the electric conductor sectional area of bus duct of the present utility model can be done more a little bit smallerly, for example, as the bus duct of 400A specification, the electric conductor sectional dimension of bus duct of the present utility model can taper to 6 * 30mm from 6 * 40mm of existing product.In addition, because on the conductive copper of the bus duct of the present utility model folder 252 slotted 256, and the central part of the cross-over block 29 of the termination that is used to peg graft has groove 291, so when connecting the 252 generation thermal expansions of dististyle 241 and conductive copper folder, can eliminate the destruction of thermal stress automatically, thereby prolong useful life.

Claims

1, a kind of intensive plug type bus duct, comprise housing, be arranged on one group of parallel flat electric conductor in the housing by the insulating material coating, be arranged on insulation support body and two grafting terminations between described flat electric conductor and the described housing, a described grafting termination comprises the one group of connection dististyle that has groove from the top of an extension of each described flat electric conductor, it is characterized in that described another grafting termination comprises the connection dististyle that extends from the other end of described each flat electric conductor and is arranged on this and is connected the dististyle two sides and has the conductive copper of central through hole to press from both sides.

2, intensive plug type bus duct as claimed in claim 1 is characterized in that, described insulating material in order to coating flat electric conductor is an irradiation polyvinyl chloride insulation sheath.

3, intensive plug type bus duct as claimed in claim 1 or 2 is characterized in that, the centre bore of described conductive copper folder to top edge middle part has a slit.

4, intensive plug type bus duct as claimed in claim 1 or 2, it is characterized in that it also comprises in order to the cross-over block of isolating each conductive copper folder with in order to the insulated bolt of fixing described grafting termination, described cross-over block is provided with central through hole, has groove around this hole.