CN2188255Y

CN2188255Y - Tension pulley for tension machine

Info

Publication number: CN2188255Y
Application number: CN 94201234
Authority: CN
Inventors: 岑阿毛; 叶维永
Original assignee: SHIPU ELECTRIC APPLIANCE AND TOOLS PLANT XIANGSHAN COUNTY
Current assignee: SHIPU ELECTRIC APPLIANCE AND TOOLS PLANT XIANGSHAN COUNTY
Priority date: 1994-01-12
Filing date: 1994-01-12
Publication date: 1995-01-25
Anticipated expiration: 2004-01-12

Abstract

The utility model relates to a tension pulley for tension machines for operation of tension stringing of transmission lines and erection of overhead cable ways. The tension pulley for tension machines is formed by parallel arrangement of a drive and a driven wheels fixed with wheel groove liners. The diameter of the driven wheel is 0.6 to 0.95 times as long as the drive driven wheel. The drive and the driven wheels are fixed with two kinds and more than two kinds of wheel groove liners. When a conducting wire is drawn by external force, the drive and the driven wheels rotate, and only the drive wheel with bigger diameter is controlled by external braking force. The wheel groove liners can be manufactured by selecting material with different friction coefficient to cause the conducting wire to be stressed uniformly. The phenomena of beating a lantern by the conducting wire can be avoided, the conducting wire can be protected, and the tension pulley can be caused to discharge the conducting wire in a uniform speed. Thus the weight of the complete machine is reduced; the volume is decreased; the cost is reduced.

Description

Tension pulley for tension machine

The utility model relates to a kind of straining pulley that transmission line construction under tension stringing and overhead cableway set up the tensioner that operation uses that is used for.

When transmission line mechanical traction stringing construction operation, for make lead when exhibition is put not with ground and various ground installation, massif, trees contact friction, injury-free to guarantee its surface, must be in the unfolding conductor process lead be applied one all the time and put direction opposite effect power with the traction exhibition, the machine that produces this tension force is tensioner.

In the construction, the straining pulley in the two-wheel tensioner of employing single-wheel braking all adopts two equal diameters at present, the two-wheeled parallel arranged, and wheel surface has only the structure of single rubber lining.Therefore big, the Heavy Weight of the volume of tensioner, and the suffered frictional force of lead is inhomogeneous, damages lead easily is easy to generate the lead phenomenon of carrying a lantern lighted during use.

The purpose of this utility model is to provide a kind of straining pulley of follow-on tensioner, the phenomenon that it is in light weight, volume is little, the energy guardwire also can avoid lead to carry a lantern lighted.

The straining pulley that the utility model is achieved in that tensioner is made up of the driven wheel parallel arranged that is fixed with the wheel pit liner, and the driven pulley diameter is 0.6～0.95 of a driving wheel diameter, also fixes the wheel pit liner more than two kinds and two kinds on the driven wheel.

Fig. 1. structural representation of the present utility model.

Fig. 2. straining pulley cross section structure schematic diagram.

Below in conjunction with accompanying drawing embodiment of the present utility model is further described:

Driven wheel (1), (5) structure are identical, the closed cylinder chamber that through hole is arranged for the centre, on the circumferential surface of cavity with screw (6) constant cross-section for two cannelures are arranged, the annulus wheel pit liner of being made by the less nylon material of coefficient of friction (2) has three identical cannelures with the cross section and takes turns pit liner (3) by the annulus that the bigger elastomeric material of coefficient of friction is made.Driven pulley (5) diameter is 0.6～0.95 of driving wheel (a 1) diameter.

With two through holes that pass respectively on driven wheel (1), (5), be fixed on the bearing support on the tensioner by the bearing pedestal parallel arranged of axle two ends, straining pulley just can have been worked.

During use, lead (4) is looped around the surface of two driven wheels (1), (5) successively, insert in the race one by one again, see that from lead lead (4) contacts with nylon wheel pit liner (2) earlier, contact with rubber wheel pit liner (3), when lead (4) when being subjected to external force traction, rotate two driven wheels (1), (5) again, wherein have only the effect of trailing wheel driving wheel (1), so just make lead (4) put lift-off in the exhibition of bearing under the state of a certain tension force for the braking force that added.

Also can select the structure of three kinds of wheel pit liners for use, promptly two cannelures are arranged by the cross section, nylon annulus wheel pit liner (2) has an identical cannelure with the surface, plastic circle ring wheel pit liner has two identical cannelures with the cross section, has in the middle of rubber ring wheel pit liner is fixed on screw (6) on the circumferential surface in through hole closed cylinder chamber to constitute driven wheel (figure omission).

The utility model is compared with prior art: stressing conditions from driven wheel work, only has the effect of the brake force that driving wheel added, and driven pulley is not subjected to Braking only to be used for lead wire, therefore in the situation that does not affect use, the driven pulley diameter can be reduced, namely reduced weight, the volume of facility, reduced cost again. The suffered tractive force of wheel pit liner that contacts with lead because of elder generation is bigger; select the little material of coefficient of friction to make liner; be not easy to produce permanent deformation and damage when making liner be subjected to wire squeezes; be conducive to improve the service life of liner; the wheel pit liner of then outlet; suffered tractive force less; adopt the bigger material of coefficient of friction to make; do not produce in wheel surface when making lead be subjected to tractive force and skid; even lead is stressed evenly; the phenomenon of avoiding lead to carry a lantern lighted has been protected lead, makes again straining pulley at the uniform velocity emit lead.

Claims

1, a kind of straining pulley of tensioner, rearrange side by side by the driven wheel that is fixed with the wheel pit liner, it is characterized in that driven pulley (5) diameter is 0.6～0.95 of driving wheel (a 1) diameter, also is fixed with the wheel pit liner more than two kinds and two kinds on driven wheel (1), (5).

2, straining pulley according to claim 1, it is characterized in that two cannelures being arranged by the cross section, the annulus wheel liner (3) that annulus wheel pit liner of being made by nylon (2) and cross section have three identical cannelures to be made by rubber is fixed on the middle circumferential surface that through hole closed cylinder chamber arranged with screw (6) and constitutes driven wheel (1), (5).

3, straining pulley according to claim 1 and 2, it is characterized in that having two cannelure nylon annular groove liners (2) and cross section that an identical cannelure is arranged by the cross section, plastic circle ring wheel pit liner has two identical cannelure rubber ring pit liners with the cross section, and being fixed on the centre with screw (6) has on the circumferential surface in through hole closed cylinder chamber and constitute driven wheel.