CN2371679Y

CN2371679Y - Copper-aluminium power transition wire clamp

Info

Publication number: CN2371679Y
Application number: CN 99235783
Authority: CN
Inventors: 张广山; 徐文壮
Original assignee: RUISHENG INVESTMENT DEVELOPMENT Co Ltd GUANGDONG
Current assignee: RUISHENG INVESTMENT DEVELOPMENT Co Ltd GUANGDONG
Priority date: 1999-04-12
Filing date: 1999-04-12
Publication date: 2000-03-29
Anticipated expiration: 2009-04-12

Abstract

The utility model discloses a new-type copper-aluminium power transition wire clamp. An aluminium clamp of the utility model is provided with an aluminium fixing clamp plate and an aluminium movable clamp plate, wherein, the aluminium fixing clamp plate is provided with a shaft seat, and the aluminium movable clamp plate is movably embedded in the shaft seat of the aluminium fixing clamp plate. A clamp groove which clamps passing aluminium wires is arranged at a middle part between the aluminium fixing clamp plate and the aluminium movable clamp plate. A fastener is arranged at the upper part of the plates for controlling the on-off of an aluminum clamp. A copper clamp of the utility model is composed of a copper piece and locking nuts, wherein, the outer surface of the copper piece is provided with screw threads and hollow open sides, and the locking nuts are matched with the copper piece. Using the manner of self locking and clamping, the utility model has the advantages of simple and flexible structure, convenient operation, reliable clamping operation, and wide use range because the utility model is applicable to conducting wires with different diameters.

Description

Copper aluminium power transition wire clamp

The utility model relates to a kind of copper aluminium power transition wire clamp.

In the electric power transfer practice, all adopt aluminum steel in long distance power transmission and the regional power grid construction, and when electric power is introduced the user, adopt copper cash, when adopting the method for winding of copper aluminum steel and mechanical fasteners in the past, by aluminum steel in the copper cash transfer process, because the difference of copper aluminium physical property often produces three kinds of unfavorable conditions: 1. the oxide-film of aluminium surface generation is electricity and heat insulation body; 2. the creep limit of aluminium is low, when aluminium conductor and copper conductor twine or use bolted, and aluminium generation creep, contact place stress relaxation causes the contact point loose contact; 3. in wet environment, also can cause contact point place resistance to increase because of the galvano-cautery between aluminium and the copper. in order to solve the problems referred to above that occur easily in the aluminum bronze line transfer process, people adopt the method for welding, make preparation joint, make copper aluminium contact-making surface not have gap non-oxidation layer, during the exchange of copper aluminum steel, aluminum steel is clamped solid by aluminium, copper cash is clamped solid by copper, avoided taking place because of the phenomenon that the resistance rising causes line to be ruined. still, copper-aluminium joint (folder) complex structure that has appeared on the market at present often adopts 8 bolted, and is loosening easily, cause loose contact, and very inconvenience of outdoor work high above the ground.

The purpose of this utility model is to provide that a kind of structure is light and handy flexibly, easy to use, clamping is reliable, and can press from both sides the copper aluminium power transition wire clamp of the lead of multiple diameter.

In order to reach this purpose, copper aluminium power transition wire clamp of the present utility model still is formed by connecting with the copper clamping surely by the aluminium folder, the aluminium folder then comprises the aluminium strap of tape spool seat and the aluminium ambulatory splint of tape spool, described axle can be nested in the described axle bed in activity, the middle part of this two boards respectively is a wire casing, two wire casings are corresponding, forming the aluminum steel clip slot. a securing member is arranged at the top of aluminium strap and aluminium ambulatory splint, the folding of control aluminium folder. the copper folder is made up of threaded copper spare of appearance and the locking nut that matches with it, the vertical direction of copper spare has a line hole, and on this direction, have an otch. during use copper cash is inserted in the line hole of copper spare, make nut constantly upwards tighten copper spare then, nut just constantly tightens up the hollow copper spare of opening the limit, thereby clamps copper cash.

The utility model is compared with the copper aluminium power transition wire clamp of prior art has following advantage: owing to use movable aluminium folder of shaft type and the hollow copper folder of opening the limit, be applicable to the not copper aluminum steel transition and conversion in collinear footpath, can press from both sides the lead of multiple diameter by a folder, the use amplitude is wide; The utility model has only two bolts altogether, and is therefore easy to use, clamping is reliable, and materials are few, manufacture craft is simple, integrated cost is low.

Describe execution mode of the present utility model in detail below in conjunction with accompanying drawing.

Fig. 1 is a partial sectional view of the present utility model;

Fig. 2 is the end view of a kind of execution mode of the utility model.

As depicted in figs. 1 and 2, copper aluminium power transition wire clamp of the present utility model is formed by connecting surely by copper folder and aluminium clamping, the aluminium folder comprises aluminium strap 1 and aluminium ambulatory splint 5, the copper folder then is made of with locking nut 8 the threaded copper spare 7 of appearance. and the bottom of aluminium strap 1 is an axle bed 3, its cross section can be circular arc, leave a breach. the bottom of aluminium ambulatory splint is a clamping plate axle 6, the size of this size and axle bed 3 adapts, make it to be nested in the axle bed 3, and because the existence of axle bed 3 breach, aluminium ambulatory splint 5 can rotate folding around this axle in axle bed 3. and the middle part of aluminium ambulatory splint 5 and aluminium strap 1 respectively is a wire casing, two groove symmetries are coincide, form aluminum steel clip slot 2. and rotate aluminium ambulatory splint 5, open certain angle, collinear footpath does not pass through aluminum steel and can put into clip slot 2, aluminium ambulatory splint 5 closes, convenient clamping with the lever force that is formed by the folder aluminum steel with axle 6 passed through aluminum steel. and the top of aluminium strap 1 and aluminium ambulatory splint 5 also has a securing member, be used to control the folding of aluminium folder, clamp aluminum steel. as shown in FIG., securing member is fastening bolt 4 and nut. add a spring shim (not drawing among the figure) on the fastening bolt 4, when aluminum steel generation creep, spring shim can work the effect of tightening.

The mode that copper of the present utility model folder adopts self-locking to clamp. the copper spare 7 of copper folder is actual to be the brass bolt of a distortion, on its vertical direction, hole earlier, form line hole 9, vertically saw an otch 10 then, otch 10 communicates with line hole 9, and width is about 1-2mm. as a kind of embodiment of the present utility model, and the termination of copper spare 7 is cut sth. askew tapered, tapering between the 15-30 degree all can, decide on the size of this copper spare diameter; The hole of locking nut 8 is greater than copper spare taper microcephaly's diameter, be slightly less than the diameter of copper spare. as another embodiment of the present utility model, the hole of locking nut 8 is made of small one and large one two straight holes, the internal diameter of aperture is slightly less than the diameter of copper spare 7. as the third embodiment of the present utility model, above-mentioned two kinds of embodiment can be combined, as shown in Figure 2, the aperture of locking nut 8 is the diameters that are slightly larger than copper spare 7 taper microcephalies, at this moment, copper conductor is inserted in 9 holes, line hole of copper spare 7, self pulling force that produces when utilizing locking nut 8 to tighten then, the aperture of locking nut 8 is constantly tightened up the hollow cone of opening the copper spare 7 on limit, thereby reaches the purpose of clamping wire.

Aluminium strap 1 of the present utility model and aluminium ambulatory splint 5 can adopt methods such as die casting, extruding, punching press to make, and material can use fine aluminium, electric work aluminium and alloy aluminum. and the material of brass bolt 7 can use red copper, electrician's copper or brass.

Claims

1. a copper aluminium power transition wire clamp is formed by connecting with the copper clamping surely by the aluminium folder, it is characterized in that:

Described aluminium folder comprises the aluminium strap (1) of tape spool seat (3) and the aluminium ambulatory splint (5) of tape spool (6); Described axle (6) can be nested in the described axle bed (3) in activity; The middle part of above-mentioned aluminium strap (1) and aluminium ambulatory splint (5) respectively is a wire casing, and two wire casings are corresponding, forms aluminum steel clip slot (2);

Described aluminium strap (1) has a securing member with the top of aluminium ambulatory splint (5);

The locking nut (8) that described copper folder comprises the screwed copper spare of appearance (7) and matches with it;

On the vertical direction of described copper spare (7) wired hole (9), and on this direction, have otch (10).

2. copper aluminium power transition wire clamp according to claim 1 is characterized in that: described securing member is made of fastening bolt (4) and nut and the spring shim that is clipped in wherein.

3. copper aluminium power transition wire clamp according to claim 1, it is characterized in that: the termination of described copper spare (7) is cut sth. askew tapered.

4. copper aluminium power transition wire clamp according to claim 1 is characterized in that: the hole of described locking nut (8) is made of small one and large one two straight holes.