CN2821955Y

CN2821955Y - Vertical copper bus for low voltage switch cabinet

Info

Publication number: CN2821955Y
Application number: CN 200520074276
Authority: CN
Inventors: 胡建刚; 周振忠; 李燕; 龚进; 屈仕亮
Original assignee: Changshu Switchgear Manufacturing Co Ltd
Current assignee: Changshu Switchgear Manufacturing Co Ltd
Priority date: 2005-08-05
Filing date: 2005-08-05
Publication date: 2006-09-27
Anticipated expiration: 2015-08-05

Abstract

The utility model relates to a vertical copper bus used for matching a one-time receptacle of a functional unit of a low-voltage switch cabinet. The utility model comprises a rectangular bus body; the middle part of one side of the bus body along the length direction is provided with a plug terminal used for matching the one-time receptacle of the functional unit. The cross-sectional shape of the plug terminal and the bus body forms a T shape. The utility model has the advantages of high bending strength, small deformation, high short circuit current resisting ability, high matching precision of the one-time receptacle of the switch cabinet functional unit and the plug terminal, good expansibility, etc. Moreover, the utility model can prolong the service life of the one-time receptacle of the switch cabinet functional unit.

Description

The vertical copper busbar that low-tension switch cabinet is used

Technical field

The utility model relates to the bus in the switching device that power supply and distribution of electric power uses, and more particularly is an a kind of socket vertical copper busbar of inserting mutually of functional unit of and low-tension switch cabinet.

Background technology

Low-tension switch cabinet is widely used in different occasions as the terminal equipment of electric power system power distribution, and a socket of its functional unit is the assurance of low-tension switch cabinet reliability service with the good inserting connection of vertical bus.At present, the busbar cross-section of most commercial is rectangular, one of shortcoming is that bending strength is low, yielding, tolerance short circuit current ability is also lower, its as vertical bus of low-tension switch cabinet use the inserting of a socket that easily causes the congenerous unit bad be connected not in place, cause a socket damage and cause unnecessary temperature rise, directly threaten safety, the stable operation of low-tension switch cabinet; Two of shortcoming is not have autgmentability, for example when the user in use needs to transform out line loop, just might make ampacity exceed the ampacity of original vertical bus, in this case, except the vertical bus that former rectangle vertical bus is replaced with bigger specification is also all reinstalled, have nothing for it; It is unreasonable that three of shortcoming is that vertical copper busbar patches the structure of end, the socket that makes the switch cubicle functional unit and vertical copper busbar to patch the impact that is subjected to when termination is inserted big, easily cause and undermine socket one time, and a socket and the contact pressure that patches between the end are inhomogeneous, the current unevenness that causes both contact positions is even, temperature rise is big, is unfavorable for ensureing the useful life of a socket of switch cubicle functional unit.

Summary of the invention

Top priority of the present utility model be a kind of bending strength height will be provided, distortion is little and use between the socket with the switch cubicle functional unit and obtain good quality of fit and improve the vertical copper busbar that tolerance short circuit current low-tension switch cabinet ability, that have autgmentability is used.

Also task of the present utility model is to provide a kind of socket at the switch cubicle functional unit can not produce excessive impact when termination is inserted and use socket of protection with patching, and the vertical copper busbar that can keep uniform low-tension switch cabinet to use with the contact pressure between socket.

For finishing top priority, technical scheme provided by the utility model is: the vertical copper busbar that a kind of low-tension switch cabinet is used, it comprises rectangular-shaped bus bulk 1, described bus bulk 1 along its length a middle side part be provided with functional unit on a socket mutually inserting patch end 11, be T shape by patching end 11 with bus bulk 1 shape of cross section structure between the two.

For finishing also task, technical scheme provided by the utility model is: described patch end 11 with functional unit on a socket be provided with circular-arc cutting edge 111 in an end end of inserting mutually.

The utility model described bus bulk 1 with patch end 11 relative opposite sides middle part and be provided with screwed hole 12.

The utility model has extended expansion end 13 respectively at the two ends with patching end 11 relative opposite sides of described bus bulk 1, is Y shape by expansion end 13, bus bulk 1 and the shape of cross section structure that patches between end 11 threes.

Compared with prior art, advantage of the present utility model is: the bus bulk 1 of T shape structure can improve the bending strength of copper busbar, be out of shape minimum, tolerance short circuit current ability also improves with the raising of bending strength, while makes a socket of switch cubicle functional unit and patches and hold 11 quality of fit height owing to bending strength height, distortion are little; The bus bulk 1 of Y shape structure is had its own targetedly the function that a socket with the switch cubicle functional unit plugs, yet only with regard to the bus bulk 1 of T shape structure, if the user need go out line loop transformation to the pull-out type low tension switch, further improve the copper busbar ampacity, as long as by stacked rectangular bus bar on T shape bus bulk 1, also can achieve the goal with cordwood combination according to being extended to Y shape bus bulk 1, need not change original copper busbar, also need not change any structure of original T shape bus bulk 1, save material thus, reduced production cost; Patch the end 11 ends be formed with circular-arc cutting edge 111, the socket that makes the switch cubicle functional unit and bus bulk 1 to patch the impact that is subjected to when end 11 contacts very little, avoided a unnecessary damage of socket, make a socket more even simultaneously with the contact pressure that patches end 11 both sides that contact, thereby the electric current that the contact both sides place is flow through is also relatively more even, avoid unnecessary temperature rise, and then prolonged the useful life of a socket of switch cubicle functional unit.

Description of drawings

Fig. 1 is the cross section structure schematic diagram of T shape bus bulk 1 of the present utility model.

Fig. 2 is the cross section structure schematic diagram of Y shape bus bulk 1 of the present utility model.

Fig. 3 is the cross section structure schematic diagram of the separate assembling Y shape bus bulk 1 of T shape bus bulk 1 of the present utility model and rectangle copper busbar 2 compositions.

Fig. 4 is the stereogram of T shape bus bulk 1 of the present utility model.

Fig. 5 is for adopting knockdown Y shape bus bulk 1 to be installed on to match in the bus clip and carrying out the Application Example schematic diagram that inserting is connected with a socket on the functional unit.

Embodiment

The utility model is described in further detail below in conjunction with accompanying drawing.

Referring to Fig. 1 and in conjunction with Fig. 4, disclosed with copper be host material make by the bus bulk 1 of rectangle and directly be arranged on one of rectangular bus bar body 1 length direction middle side part patch the T-shaped bus bulk 1 of end 11 shape of cross sections that constituted, patch the end 11 be used for functional unit on a socket inserting mutually, be provided with circular-arc cutting edge 111 patching end 11 grafting end, circular-arc cutting edge 111 is convenient to patch the good inserting of end 11 and a socket of switch cubicle functional unit.Bus bulk 1 be provided with screwed hole 12 with patching end 11 relative opposite sides middle part, its effect is that the bus bulk 1 that is extended to composite type Y shape for T shape bus bulk 1 provides extra fastening force at the excessive or inconvenient installation bus clip of bus clip span place.

Referring to accompanying drawing 2, to have provided be the bus bulk 1 by rectangle made of host material with copper, patch the Y-shaped bus bulk 1 of shape of cross section that end 11 and the expansion of the end, two ends of the opposite side relative with patching end 11 that directly is arranged on bus bulk 1 hold 13 threes to be constituted, and all the other are with aforementioned.

Referring to accompanying drawing 3, provided on the bus bulk 1 of T shape with the stacked a pair of rectangle copper busbar 2 of the form of unitization, can embody the bus bulk 1 of Y shape equally on the whole.This cordwood combining structure is that the expansion by T shape bus bulk 1 is brought, and concrete advantage is because of mentioning in front, thus no longer superfluous and.

Obviously, can associate the bus bulk 1 of whole Y shape as shown in Figure 2 by the bus bulk 1 of knockdown Y shape shown in Figure 3.Its cross-sectional profile is identical with the cross-sectional profile of combinations thereof formula Y shape, indexs such as its ampacity, bending strength, tolerance short circuit current ability are higher than the bus bulk 1 of knockdown Y shape, and it no longer need install more more convenient than the bus bulk 1 of composite type Y shape being arranged to the screwed hole 12 of modulus with patching end 11 relative opposite side middle parts.

Referring to accompanying drawing 5, explanation with the bus bulk 1 of T shape be extended to Y shape and with a socket inserting step of connecting of switch cubicle functional unit, bus clip 8 at first is installed, the bus bulk 1 of T shape then is installed successively, square type copper busbar 2, bus clip 9 is also fastening, use briquetting 4 then, plain washer 5, spring washer 6, the bus bulk 1 of 7 pairs of T shapes of bolt and rectangle copper busbar 2 are carried out fastening, insert functional unit at last, socket 3 is entered along the circular-arc cutting edge 111 that patches end 11 of the bus bulk 1 of T shape patch end 11, thereby the inserting of finishing a socket of bus bulk 1 and functional unit is connected.It may be noted that briquetting 4, plain washer 5, spring washer 6, bolt 7, screwed hole 12 are optional, only just need its bus bulk 1 that provides extra fastening force to make T shape to contact better with rectangle copper busbar 2 at the excessive or inconvenient installation bus clip of bus clip span place.

If cancellation briquetting 4, plain washer 5, spring washer 6, bolt 7, rectangle copper busbar 2 in the above-mentioned installation, promptly be to select for use the bus bulk 1 of T shape to be installed on to match in the bus clip and carry out inserting to be connected with a socket of functional unit.

In above-mentioned installation if cancellation briquetting 4, plain washer 5, spring washer 6, bolt 7, and substitute the bus bulk 1 of knockdown Y shape shown in Figure 3 with the Y-shaped bus bulk 1 (Fig. 2) of integral body, promptly be to select for use whole Y-shaped bus bulk 1 to be installed on to match in the bus clip and carry out inserting to be connected with a socket of functional unit.

Claims

1, the vertical copper busbar used of a kind of low-tension switch cabinet, it comprises rectangular-shaped bus bulk (1), it is characterized in that described bus bulk (1) along its length a middle side part be provided with functional unit on a socket mutually inserting patch end (11), be T shape by patching end (11) with bus bulk (1) shape of cross section structure between the two.

2, the vertical copper busbar used of low-tension switch cabinet according to claim 1, it is characterized in that described patch end (11) with functional unit on a socket be provided with circular-arc cutting edge (111) in an end end of inserting mutually.

3, the vertical copper busbar used of low-tension switch cabinet according to claim 1 is characterized in that being provided with screwed hole (12) at the opposite side middle part relative with patching end (11) of described bus bulk (1).

4, the vertical copper busbar used of low-tension switch cabinet according to claim 1, it is characterized in that having extended expansion end (13) respectively at the two ends of the opposite side relative with patching end (11) of described bus bulk (1), is Y shape by expansion end (13), bus bulk (1) and the shape of cross section structure that patches between end (11) three.