CN88211406U - Tightening device for naked multiple-strand wire - Google Patents

Abstract

The utility model provides a new tightening device which is used for high-altitude electric force stringing and post telephone and telegraph communicating construction. Correspondent tooth forms are manufactured at a flat jaw mouth by using patterns which are formed by multiple-strand wires so that the holding force of the naked multiple-strand wires can be improved and escaping wires is prevented. The stranded wires are also not easy to damage. The safe production and the raised work efficiency of work at high place can be assured.

Description

Tightening device for naked multiple-strand wire

Applicable power overhead network of the utility model and post and telecommunications line are with wire grip or other traction, fastener.

Usually its tong head is to utilize lever principle will clamp piece to press to guide plate, the sliding-frictional resistance that relies on the pointed tooth on jaw semi-round groove, " V " shape groove plane formula groove face to produce is being held and is being clamped stranded wire, because coefficient of friction is little, it is held and puts forth effort not quite, particularly the steel twisted wire easily produces and escapes line, pointed tooth damage twisted wire, hold and put forth effort as increasing it, can not do the binding clip lever arm of force and the ratio of weighing arm very big, otherwise can cause the structure heaviness, be unsuitable for work high above the ground, and can increase raw materials consumption.

To increase it and hold and put forth effort in order to solve, be applicable to the high-altitude stringing again, the utility model utilizes stranded wire self decorative pattern, makes corresponding profile of tooth on jaw, reaches to improve to hold the perfect condition of putting forth effort.

The purpose of this utility model is to provide a kind of high-quality, reliable wire grip.

Compare with original wire grip, this novel wire grip has following several tangible advantage: 1, hold and put forth effort can not produce and escape line greatly, and safe and reliable.2, jaw and twisted wire do not have relative motion, not the easy damaged twisted wire.3, because profile of tooth is made according to the stranded wire decorative pattern, its instrument specificity is stronger, elaborates below in conjunction with accompanying drawing:

Fig. 1 is the wire grip general assembly drawing, and guide plate 1 among the figure, pincers piece 2 are formed the jaw of wire grips, fagging 4 be the pulling force of connecting plate 7,8 generations turn to for jaw to holding the pressure of lead; Draw ring 13 is used for being connected between wire grip and the instrument that pulling force is provided; Torsion spring 10, torsion spring pin 9, pin 11 actings in conjunction make jaw manually open the tight lead of back automatic pincers; All the other pins 3, guide finger 5, connecting pin 6 effects is to connect corresponding construction spare, Fig. 2 is the guide plate 1 of wire grip, jaw 2 jaw decorative pattern figure, pincers piece jaw is made semi-round groove or " V " shape groove, the notch And that the guide plate jaw is made plane or other shapes makes this thereon and is holding profile of tooth, both decorative patterns can exchange mutually, because the twisted wire direction has a left side, the right side is arranged, profile of tooth is corresponding makes a left side tiltedly, tiltedly right or both Tong Shi And save as " X " shape, Fig. 1 wire grip is in closure state, when draw ring 13 forwards spurs, stranded wire is embedded in the corresponding profile of tooth, lever power works with under tightly lead is pushed down, the resistance of the relative motion that produce between jaw and the twisted wire this moment becomes the force of sliding friction of great friction coefficient by the force of sliding friction of low-friction coefficient, it is held and puts forth effort and can improve greatly, consistent with the breakdown strength of binding clip or twisted wire, be that binding clip or twisted wire destroy, then it is held and puts forth effort also to disappear thereupon, reaches the perfect condition of structure stress.

Because twisted wire specification difference, its line thigh diameter, lift angle and pitch are also inequality, therefore the specification of wire grip is also different, its lift angle and pitch of holding profile of tooth accordingly also can be inequality, the wire grip of making by this profile of tooth is not only applicable to steel angle stranded wire, but and also extensive use in binding clip and other similar structures.

Claims (1)

1, a kind of wire grip of being made up of guide plate 1, pincers piece 2, fagging 4, pin is characterized in that:

1, has tong head;

2, tong head is made up of the jaw of pincers piece, guide plate;

3, its profile of tooth of guide plate is made left and right oblique or " X " shape.

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