CN1075678C

CN1075678C - Anti-slip device for connecting steel core of steel cored twisted line for overhead electric power transmission

Info

Publication number: CN1075678C
Application number: CN97100627A
Authority: CN
Inventors: 蔡维新
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-03-10
Filing date: 1997-03-10
Publication date: 2001-11-28
Anticipated expiration: 2017-03-10
Also published as: CN1193213A

Abstract

The present invention discloses an anti-slip device of a steel core aluminum stranded wire connection steel core for overhead power transmission, which comprises a steel jacket, a steel core, a fastening piece and an expansion core, wherein the steel jacket and the steel core are combined in a conical surface mode; the steel core is fastened by a steel claw; or the steel core is fastened by the steel jacket through the fastening piece; or the steel core is fastened by the steel claw with ears through the fastening piece; under the pull action of the steel core aluminum stranded wires for overhead power transmission, the steel jacket and the steel claw can fasten the steel core and push an aluminum claw to move along the combined conical surface of a main body for clamping a conducting wire; the steel core aluminum stranded wires do not have slip, and the conducting wire can not be pulled apart. The present invention can ensure normal power transmission and safety production, and is suitable for a steel core aluminum stranded wire connecter and a strain clamp.

Description

The overhead electric power transmission anti-slip device for connecting steel core of steel cored twisted line

The present invention relates to a kind of overhead electric power transmission with steel reinforced aluminium conductor steel core shoe, be applicable to lead wire connector and strain clamp.

At present, domestic overhead electric power transmission steel reinforced aluminium conductor pecker, its basic structure and clamping means have three kinds, and the one, use the elliptical tube splicing processes, be about to two parallel overlap joints of gentle line end head and get up, put oval aluminum pipe and clamp with the detonation pressure method.The 2nd, with oval aluminum pipe lead butt joint, being about to two lead terminations docks, be enclosed within the oval-shaped aluminum pipe, then the aluminum steel of wire termination is excised in order to prevent the steel core slippage, put the less low carbon steel pipe of diameter, with hydraulic method or the clamping of detonation pressure method, the 3rd, be used on the strain clamp less than 23 millimeters steel reinforced aluminium conductors of φ for diameter, use the U-bolt clamping more, still use detonation pressure method or hydraulic method clamping than the major diameter lead.Above-mentioned the whole bag of tricks all has drawback; The detonation pressure method exists the safety problem of putting explosive and using explosive, the big and easy damaged lead of blast noise.Hydraulic method is because of the need hydraulic press, and himself is heavier and need carry, and during operation the big efficient of labour intensity low require high.Bolt clamping type still exists labour intensity big, inefficient problem.And when surpassing 23 millimeters of φ, the steel reinforced aluminium conductor diameter of wire is difficult to clamping.Occur a kind of Taper Pipe wedge type in recent years and clamp pecker voluntarily, its structure is seen Figure 15.This structure is made up of end cover, housing, aluminium pawl, guiding cap, spring and middle spacer sleeve.Its operation principle: continuation promotion aluminium pawl retreated after lead process end cover inserted guiding cap, the aluminium pawl opens lead and inserts the aluminium pawl, the aluminium pawl under spring action in it sawtooth be close to the lead outer surface, aluminium pawl sawtooth is clamped on the lead during tension lead, lead produces grip to steel core, pulling force increases grip and also increases thereupon, thereby has realized connecting the purpose of lead and realization conduction.Though that this pecker has is easy to operate, efficient is high, conduction reliably helps advantages such as big productions, facts have proved this pecker when clamping major diameter lead, owing to the grip of aluminium pawl generation is difficult to overcome the steel core slippage, its result makes lead disrumpent feelings in advance.When diameter of wire is big in addition, contractive pressure major diameter conical tube difficulty.

The objective of the invention is to design a kind of overhead electric power transmission anti-slip device for connecting steel core of steel cored twisted line that comprises pecker body, aluminium pawl, steel bushing, steel pawl and securing member for overcoming above-mentioned weak point; Solved the steel core slippage problem during steel core aluminium hinge line continues.

Content of the present invention, overhead electric power transmission comprises steel bushing, steel core, securing member and bloated core with anti-slip device for connecting steel core of steel cored twisted line; The steel bushing steel core is conical surface combination, the steel pawl fastening steel core; Or steel bushing through securing member fastening steel core; Or the steel pawl is fastening steel core through securing member.Body is provided with the window of loading and unloading part.

Be provided with taper hole in the steel bushing of overhead electric power transmission with the connecting steel core of steel cored twisted slide device, the outer cone of steel pawl and steel bushing taper hole match, and the steel pawl is made as two awl valve structures, and steel pawl inner surface is provided with the sawtooth that increases clamping force and is clipped on the steel core; Also can be installed in the steel pawl via pins of two lobes in the hole of the big end of aluminium pawl; Also can be loaded on the steel bushing of band inner cone on the steel core, wedge is equipped with bloated core in the steel core; The steel bushing of endoporus band saw tooth is provided with the drift hole, and the drift of band saw tooth is loaded between steel core and the steel bushing; Also can by the low charcoal steel steel bushing of plastically deformable the steel pawl cramping of the band saw tooth of two lobes on steel core; Also can be loaded on the steel pawl of band ear on the steel core, pinching screw is loaded in the screw hole on the ear of steel pawl.

Advantage of the present invention, earlier the aluminum steel of steel reinforced aluminium conductor (lead) end is cut during installation, steel core is exposed and the present invention is installed on steel core, after erecting lead, because the pulling force of lead makes the steel core tension, steel core and steel bushing clamp and become one, the steel bushing of steel bushing steel core mechanism promotes the aluminium pawl simultaneously, and the aluminium pawl produces axial displacement and clamping wire in body, not aluminum steel slippage relatively of steel core, solved aluminum steel and broken problem, guaranteed that safety send; In addition, the present invention is easy for installation, and labour intensity is low, and noiselessness pollutes, and has realized civilized construction, and safety in production has also improved production efficiency.

Description of drawings:

The schematic diagram that Fig. 1 uses in the major diameter steel reinforced aluminium conductor continues for the present invention;

Fig. 2 is the A-A cutaway view of Fig. 1;

Fig. 3 clamps the schematic diagram of structure of steel pole for low charcoal steel steel bushing distortion;

Fig. 4 is the B-B cutaway view of Fig. 3;

Fig. 5 is loaded on steel core clamping structure schematic diagram in the big stomidium of aluminium pawl for the steel pawl;

Fig. 6 is the C-C cutaway view of Fig. 5;

Fig. 7 uses schematic diagram for the present invention in two lead superposed connections;

Fig. 8 is a steel bushing steel core drift clamping structure schematic diagram;

Fig. 9 is the D-D cutaway view of Fig. 8;

Figure 10 is with the steel pawl of ear through screws clamp structure of steel pole schematic diagram;

Figure 11 is the E-E cutaway view of Figure 10;

The steel bushing steel core bloated core clamping structure schematic diagram of Figure 12 for being used for small diameter wire (draw body);

Figure 13 is for being used for the steel bushing steel core clamping structure schematic diagram of small diameter wire (draw body);

Figure 14 uses schematic diagram for the present invention in strain clamp;

Figure 15 is for now clamping the pecker schematic diagram voluntarily with the Taper Pipe wedge type.

Below in conjunction with the description of drawings embodiment of the invention:

Embodiment 1, sees Fig. 1, Fig. 2, and lead 7 outside suits the aluminium pawl 2 of two band saw teeth, and aluminium pawl 2 outsides are set with body 1, is conical surface contact between the two, and body is aluminum casting and is provided with window 8, with steel bushing 3 and the steel pawl 4 of packing into; Steel core 6 outside suits the steel pawl 4 of two band saw teeth, and steel pawl outside dress steel bushing 3 is conical surface contact between the two.

Handshaking procedure and principle: the aluminum steel that at first excises the steel reinforced aluminium conductor end, with glass tape 5 steel core 6 is bound, the aluminium pawl from body middle window 8 put into → lead patchhole → put steel bushing → steel pawl inserts between tapered sleeve and the steel core, suitably knocking the steel pawl makes it clamp steel core, realize that steel core gives clamping, at this moment lead steel core steel bushing and jaw become one in fact, mobile again steel bushing makes its inner be close to aluminium pawl large end face, tension lead steel bushing promotes the aluminium pawl and moves round about, aluminium pawl internal diameter dwindles clamping wire gradually, and its clamping force also increases along with the increase of pulling force equally.Because aluminium pawl band saw tooth so aluminium pawl slippage can not take place with lead, even when pulling force is very big, owing to steel core is clamped by the steel pawl, not only slippage can not take place in self, and steel bushing will promote the aluminium pawl and continue afterburning clamping wire.Obviously the present invention has kept the advantage of Taper Pipe list awl folder, solved the steel core problem of loosing core, and has also overcome the contract problem of awl difficulty of caliber simultaneously.

Embodiment 2, see Fig. 3, Fig. 4, steel bushing is not that the conical surface combines with the steel pawl as different from Example 1, and it needs to clamp in advance, and steel pawl 4 is quenching parts of two band saw teeth, installation procedure is earlier lead to be inserted in the body apertures, put steel bushing 3 and plug steel pawl 4 again, this steel bushing is a low-carbon steel material, aims at steel pawl fore-and-aft plane P place with hammer and vertically knocks, until reaching definite size, this moment, steel pawl sawtooth blocked steel core.Tension lead aluminium pawl moves clamping wire round about.

Embodiment 3, see Fig. 5, Fig. 6, two steel pawls, 4 distributions 9 of band quenching sawtooth are fixed on the aluminium pawl, operation principle: lead and steel core insert aluminium pawl and steel pawl endoporus respectively, the sawtooth of two pawls (aluminium pawl and steel pawl) blocks line footpath separately respectively during the tension lead, simultaneously, lead is subjected to pulling force to heal big clamping force also more greatly.

Embodiment 4, see Fig. 7, this structure is made up of 1 two liners 10 of body, drift 11, steel bushing 3 and steel pawl 4, steel bushing and steel pawl are fixed on the steel core of two wire terminations, a steel bushing end face abuts on the body end face, and another steel bushing is attached on the drift 11, and the stressed back steel bushing end face of lead promotes drift and moves clamping wire, another steel bushing end face is blocked by body, also increases along with pulling force increases clamping force thereupon.In order to prevent to overlap lead damage wires in moving mutually, two aluminium liners are set between two leads.This structure not only can clamping wire, and it can obtain the favorable conductive effect equally.

Embodiment 5, see Fig. 8, Fig. 9, and part 3 is steel bushings of band saw tooth, and part 12 is drifts of band saw tooth, and the lead steel core inserts, and urgent drift 12 can be clamped steel core, and body is an aluminum casting, and the middle part is provided with the window of loading and unloading part.

Embodiment 6, see Figure 10, Figure 11, and steel pawl both sides are provided with the ear of band screw hole, and two steel pawls are clamped on the steel core through screw 13.Body is the aluminum casting that is provided with window.

Embodiment 7, see Figure 12, and it clamps principle is to adorn the steel bushing of a band inner cone on steel core 6, and this structure can be squeezed into the core 14 that expands in the steel core in advance steel core and steel bushing are connected as a single entity, and body is the aluminum casting that is provided with window.

Embodiment 8, see Figure 13, increase a single awl clamping structure again for fear of steel core slippage 2 and clamp steel core, and on the aluminium pawl, body is the contractive pressure Taper Pipe to steel bushing through screw, is used for the less lead of diameter dimension and continues.

Embodiment 9, see Figure 14, are the application of the present invention on strain clamp, and steel bushing 3, steel pawl 4 are contained on the steel core of lead and utilize its conical surface to clamp.Big end of steel bushing and the big end in contact of aluminium pawl.

The common feature of the various embodiments described above is in a word: labour intensity is low, high efficiency, and the pollution that abates the noise has realized civilized construction.Guarantee the safe operation of overhead transmission line, be of great significance for improving the economic and social benefits all.

Claims

1, a kind of overhead electric power transmission anti-slip device for connecting steel core of steel cored twisted line comprises aluminum pecker body and band saw tooth aluminium pawl, and it is characterized in that: this device comprises steel bushing, steel core, securing member and bloated core; Steel bushing, steel core are conical surface combination, the steel pawl fastening steel core; Or steel bushing through securing member fastening steel core; Or the steel pawl of band ear is fastening steel core through securing member, and body is provided with the window of loading and unloading part.

2, overhead electric power transmission anti-slip device for connecting steel core of steel cored twisted line as claimed in claim 1, it is characterized in that: be provided with taper hole in the steel bushing, the outer cone of steel pawl and steel bushing taper hole match, and the steel pawl is made as two awl valve structures, and steel pawl inner surface is provided with the sawtooth that increases clamping force and is clipped on the steel core.

3, overhead electric power transmission anti-slip device for connecting steel core of steel cored twisted line as claimed in claim 1 is characterized in that: also can be installed in two lobe steel pawl via pins in the hole of the big end of aluminium pawl.

4, overhead electric power transmission anti-slip device for connecting steel core of steel cored twisted line as claimed in claim 1 is characterized in that: also can be loaded on the steel bushing of band inner cone on the lead steel core, wedge is equipped with bloated core in the lead steel core.

5, overhead electric power transmission anti-slip device for connecting steel core of steel cored twisted line as claimed in claim 1 is characterized in that: the steel bushing of endoporus band saw tooth is provided with the drift hole, and the drift of band saw tooth is loaded between steel core and the steel bushing.

6, overhead electric power transmission anti-slip device for connecting steel core of steel cored twisted line as claimed in claim 1 is characterized in that: also can by the low charcoal steel steel bushing of plastically deformable the steel pawl cramping of the band saw tooth of two lobes on steel core.

7, overhead electric power transmission anti-slip device for connecting steel core of steel cored twisted line as claimed in claim 1 is characterized in that: also can be loaded on the steel pawl of two band ears on the steel core, pinching screw is loaded in the screw hole on the ear of steel pawl.