SU405763A1 - STRETCH DEVICE FOR EXTENSIBLE MOUNTING MOUNT - Google Patents

Description

one

The image is in the field of installation and operation of a contact network of electric railways.

The mounting rails are known, consisting of two sliding ladders connected in the upper part by a hinge and not having any tensioning devices. Their disadvantage lies in the fact that they can not be used during the installation and operation of the contact network due to its large height above the rail level, which determines the large weight of the slide.

The purpose of the invention is to facilitate the spreading of the ladders of the mounting rack, and the elimination of their elevations and ensuring speed when lowering and raising the tower.

This is achieved by the fact that in the chain hoist of the proposed device two cables were fixed, the free ends of which were attached to the sliding towers of the tower connected in the upper part by the hinge, and in the lower part by removable LINK.

FIG. Figures 1 and 2 depict the proposed tensioning device in two Projects.

A spring / is fixed by one end on one of the ladders 2, connected at the top with the other ladder 3 by means of 4, to which the working cabin 5 is attached. On the same ladder 2, the sliding block 6 of the polyspast 7 is attached. tackle.

In the chain hoist 7 there are two cables I, which are passed through several rollers 10 and the free ends 11 are fixed on different racks J2 of the opposite ladder 3. Thanks to the two cables in the mounting tower, which is moved under the weight of the weight of the stairs and the cab, its skew is excluded. The raised tower is fixed by a removable frame 15 inserted into four tabs 13 in the bases of the uprights of the wheels 14 of the wheels 14, the longitudinal rods of which are parallel to the horizontal part of the tension device cables 9.

To lower the sliding mounting tower equipped with the tension device, it is enough to remove the frame 15 and the ladder 2, and 3 will begin to move apart by the action of a part of their weight unbalanced by the tension device. The speed of lowering the mounting tower is regulated by the fitters holding the tower to the bottom of the stairs. In order to raise the tower, the fitters apply forces to the bases of the stairs, directed to the vertical axis of the tower, slightly exceeding the unbalanced tension device of the weight of the stairs.

Subject matter

A tensioning device for a sliding mounting tower,; operating on a contact network, comprising a tension spring and a polyspast connected in series with one another, characterized in that, in order to facilitate the separation of the tower ladders and the elimination and skewing of them, two the cable, the free ends of which are attached to the sliding stands of the tower, connected at the top of the hinge, and at the bottom of the removable frame.

"

//

Fig 2