CN201247938Y

CN201247938Y - Wedge type strain clamp

Info

Publication number: CN201247938Y
Application number: CNU2008201270826U
Authority: CN
Inventors: 郑哲
Original assignee: GULIFA ELECTRIC CORP
Current assignee: Gulifa Group Co Ltd
Priority date: 2008-06-24
Filing date: 2008-06-24
Publication date: 2009-05-27
Anticipated expiration: 2018-06-24

Abstract

A wedge-shaped strain clamp mainly comprises two wedge-shaped clamp devices, two groove-shaped bodies, two tension boards, two trunnion bolts, a supporting pin, fixing bolts and nuts, wherein one side of each groove-shaped body is provided with a plurality of teeth directional lateral projections, and the other side is upwards provided with a side board which is provided with a plurality of concave holes. When the two groove-shaped bodies are oppositely buckled, teeth at one side are just and mutually embedded in the concave holes of the other groove-shaped body so as to form a closed wedge-shaped annular structure for the entering of the two wedge-shaped clamp devices. Thereby, holding power which is in direct proportion with the tension power of the conductor is generated to conductors. Compared with the prior art, the wedge-shaped clamp has the advantages of high strength, large holding power, convenient installation, free maintenance, energy saving and the like.

Description

A kind of wedge type strain clamp

Technical field

The utility model relates to a kind of wedge type strain clamp, belongs to electric armour clamp field in the overhead power line.

Background technology

Various strain clamps are arranged in the existing power circuit, and commonly used have a crimp type strain clamp, it is characterized in that utilizing the steel core of steel anchor crimping steel reinforced aluminium conductor, with tubular body crimping aluminium stranded conductor, needs special installation tool also to have complicated shortcoming is installed.Other has a kind of screw bolt-type strain clamp, compresses lead with U-bolt and briquetting, installs slowly and need the periodic inspection maintenance.China's utility model patent " a kind of conductor jointer " (ZL02225723.3) has been introduced a kind of wedge type strain clamp, it is characterized in that the body that is C type opening that two lead clamping plate by oval taper are positioned at same oval taper constitutes, have characteristics easy for installation, but its body intensity and limited to the grip of lead is not suitable for the conductor mounting that the above insulated conductor of steel reinforced aluminium conductor, 10KV etc. needs big grip.

Summary of the invention

The technical problem to be solved in the present invention is, a kind of wedge type strain clamp is provided, and this wedge type strain clamp grip is big, mechanical strength is high, easy for installation.

The technical measures of implementing the utility model wedge type strain clamp above-mentioned purpose and adopting are as described below:

This wedge type strain clamp comprises two wedge type clamps, two grooved bodies, two arm-ties, two gudgeon bolts, supporting pin, set bolt and nuts; It is that mainly a side of described grooved body has several teeth directional sides to protrude, opposite side upwards has side plate, on several shrinkage pools are arranged, when two grooved bodies fasten relatively, the tooth of one side embeds in the shrinkage pool of another grooved body just from the side mutually, and forming the interior of closure is the circulus of wedge type, when two wedge type clamp plate holder leads enter, be subjected to inside extruding force, thereby lead is produced the grip that is directly proportional with wire tension; Owing to the insertion of wedge type clamp plate holder, stop the lateral sliding of grooved body simultaneously, the tooth on it can not be deviate from from shrinkage pool, thereby guaranteed the stability and the intensity of circulus, can resist the outside tension force of wedge type clamp.

The inboard of two wedge type clamps is relative wire casing, and the rear end of two wedge type clamps links to each other by two bolts, fixedly the lead in the wire casing and keep two wedge type clamps synchronous; The rear end of one of them wedge type clamp has a guiding wire clamp, and the guiding wire clamp is the arc of outside bending, and end has a line ball lid coupled by two bolts, can fixing cord and it is side directed to.

There is a boss in the outside of grooved body, and there is a screw in its central authorities, and a gudgeon bolt is housed, and boss side surfaces has a retaining pin 20 to insert in the gudgeon bolt, and the outside of grooved body has several reinforcements to be used for reinforcing the intensity of body.

The front end of two arm-ties respectively has a through hole to be connected with gudgeon bolt on the grooved body boss, and tail end respectively has a through hole to link to each other with a set bolt and nut, and middle rear end has a through hole to link to each other with a supporting pin; Thereby supporting pin has played and has kept parallel the making of arm-tie to keep flexible rotation not hinder the effect of lead between arm-tie and the grooved body when stressed.

Another embodiment is applicable to insulated conductor, the inboard clamp groove of two wedge type clamp for band anti-skid stud or anti-slip tank, two sides of tail has one or several protruding arm or grooves that stagger, the protruding arm of two the involutory back of wedge type clamp afterbodys embeds in the groove of offside mutually, plays the effect of correct involutory synchronous advance and retreat.

Also having a kind of embodiment is that the front end of arm-tie is a vertical ellipse through hole, there is a trunnion-like boss in the outside of grooved body corresponding with it, its head is horizontal ellipse, and this ellipse head can be put into the ellipse through hole of arm-tie, and its neck is a column type and less than head.

From above-mentioned improvement as can be known, compared with the prior art the technical program has following advantage:

1, delicate structure, grip is big, mechanical strength is high;

2, install simple, convenient and quick construction, do not need the special mounting instrument;

3, taper structure is directly proportional non-maintaining use to the grip of lead with the pulling force of lead;

4, the grooved body is an aluminum alloy materials, and interior wedge is aluminum alloy materials (when being used for plain conductor) or engineering plastics (when being used for insulated conductor), has energy conservation characteristic and does not hinder lead.

Wedge type strain clamp of the present utility model connects applicable to the traction of aluminium stranded conductor, steel reinforced aluminium conductor, aluminium alloy stranded conductor, 1～35KV suspended insulated guide wire in the overhead power line.

Description of drawings

Fig. 1 is the front view of the utility model wedge type strain clamp one embodiment;

Fig. 2 is the end view of Fig. 1;

Fig. 3 is the cutaway view of the utility model wedge type strain clamp through gudgeon bolt position;

Fig. 4 is the 3-D view of the single grooved body of the utility model wedge type strain clamp;

Fig. 5 is the end view of the utility model wedge type strain clamp wedge type clamp;

Fig. 6 is the front view of another embodiment of the utility model wedge type strain clamp;

Fig. 7 is the end view of Fig. 6;

Fig. 8 is the 3-D view of the wedge type clamp of another embodiment of the utility model wedge type strain clamp;

Fig. 9 is the front view of the utility model wedge type strain clamp the 3rd embodiment.

Embodiment

By Fig. 1, Fig. 2, Fig. 3 and Fig. 4 as can be known, the utility model wedge type strain clamp is by mainly being made up of two wedge type clamps 1, two grooved bodies 2, two arm-ties 3, two gudgeon bolts 4, supporting pin 5, set bolt 6 and nuts 7.One side of grooved body 2 has several teeth 8 to protrude to the side, opposite side upwards has side plate 9, on several shrinkage pools 10 are arranged, when two grooved bodies 2 fasten relatively, the tooth 8 of one side embeds in the shrinkage pool 10 of another grooved body 2 just from the side mutually, and forming the interior of closure is the circulus of wedge type.When two wedge type clamps, 1 folder lead enters, be subjected to inside extruding force, thereby lead is produced the grip that is directly proportional with wire tension; Simultaneously because the insertion of wedge type clamp plate holder 1, stop the lateral sliding of grooved body 2, the tooth 8 on it can not have been deviate from from shrinkage pool 10, thereby guarantee the stability and the intensity of circulus, can resist the outside tension force of wedge type clamp 1.There is a boss in the outside of grooved body 2, and there is a screw in its central authorities, and a gudgeon bolt 4 is housed, and boss side surfaces has a retaining pin 20 to insert in the gudgeon bolt 4, and the outside of grooved body 2 has several reinforcements to be used for reinforcing the intensity of body.

The front end of two arm-ties 3 respectively has a through hole to be connected with gudgeon bolt 4 on grooved body 2 boss, and tail end respectively has a through hole to link to each other with a fixing pin 6 and nut 7, and middle rear end has a through hole to link to each other with a supporting pin 5; Thereby supporting pin 5 has played and has kept arm-tie 3 parallel making to keep flexible rotation not hinder the effect of lead between arm-tie 3 and the grooved body 2 when stressed.

As shown in Figure 5, the inboard of two wedge type clamps 1 is relative wire casing, and the rear end of two wedge type clamps 1 links to each other by two bolts 14, fixedly the lead in the wire casing and keep two wedge type clamps 1 synchronous; The rear end of one of them wedge type clamp 1 has a guiding wire clamp 11, and the guiding wire clamp is the arc of outside bending, and end has a line ball 12 lids coupled by two bolts 13, can fixing cord and it is side directed to.

By Fig. 6, Fig. 7 and Fig. 8 structure of another embodiment of the utility model wedge type strain clamp as can be known, the wedge type clamp 1 of this embodiment adopts the engineering plastics material, is applicable to insulated conductor; The inboard of two wedge type clamp 1 is the clamp groove of band anti-skid stud 17 or anti-slip tank, two sides of tail has one or several protruding arm 15 that staggers or grooves 16, the protruding arm of two wedge type clamp 1 involutory back afterbodys embeds in the groove of offside mutually, plays the effect of correct involutory synchronous advance and retreat.

As shown in Figure 9, the 3rd embodiment of the utility model wedge type strain clamp, the front end of its arm-tie 3 is a vertical ellipse through hole 19, there is a trunnion-like boss 18 in the outside of grooved body 2 corresponding with it, its head is horizontal ellipse, this ellipse head can be put into the ellipse through hole 19 of arm-tie 3, and its neck is a column type and less than head.

As mentioned above as can be known, have the utility model wedge type strain clamp of said structure characteristics, have technology to compare with oneself, have delicate structure, grip is big, mechanical strength is high, quick and easy for installation, energy-conservation, do not hinder advantages such as lead, non-maintaining use.

The utility model wedge type strain clamp only illustrates some preferred embodiments in this manual, is not to its restriction.This professional and technical personnel can structurally make various variations or modification according to the present utility model design and spirit, for example can grooved body 2 be adopted the nonmagnetic steel material by the said structure design.Therefore Deng these must belong to protection range of the present utility model.

Claims

1, a kind of wedge type strain clamp is characterized in that, its formation comprises two wedge type clamps, two grooved bodies, two arm-ties, two gudgeon bolts, supporting pin, set bolt and nuts; One side of described grooved body has several teeth directional sides to protrude, opposite side upwards has side plate, on several shrinkage pools are arranged, described two grooved bodies fasten relatively, several teeth of one side embed in several shrinkage pools of another grooved body from the side, and the formation closure, interior is the circulus of wedge type.

2, wedge type strain clamp according to claim 1, it is characterized in that: the inboard of two wedge type clamps is relative wire casing, the rear end of two wedge type clamps links to each other by two bolts, the rear end of one of them wedge type clamp has a guiding wire clamp, the guiding wire clamp is the arc of outside bending, and end has a line ball lid coupled by two bolts.

3, wedge type strain clamp according to claim 1, it is characterized in that: there is a boss in the outside of grooved body, and there is a screw in its central authorities, and a gudgeon bolt is housed, and boss side surfaces has a retaining pin to insert in the gudgeon bolt, and there are several reinforcements in the outside of grooved body.

4, wedge type strain clamp according to claim 1, it is characterized in that: the front end of two arm-ties respectively has a through hole to be connected with gudgeon bolt on the grooved body boss, tail end respectively has a through hole to link to each other with a set bolt and nut, and middle rear end respectively has a through hole to link to each other with a supporting pin.

5, wedge type strain clamp according to claim 1, it is characterized in that: two inboard clamp grooves of wedge type clamp for band anti-skid stud or anti-slip tank, wedge type clamp two sides of tail has one or several protruding arm or grooves that stagger, and the protruding arm of two the involutory back of wedge type clamp afterbodys embeds in the groove of offside mutually.

6, wedge type strain clamp according to claim 1, it is characterized in that: the outside of grooved body is a trunnion-like boss, its neck has an abrasion-resistant metal cover, and its head is horizontal ellipse and greater than neck, the front end of arm-tie is corresponding vertical ellipse through hole with it.