SU1765339A1 - Staircase to do maintenance of power-supply system - Google Patents

Abstract

Usage: devices for the production of works in buildings such as tunnels, mines. SUMMARY OF THE INVENTION: A ladder consists of separate sections interconnected by means of brackets, the lower and upper ends of which are telescopically connected to the upper and lower supports. The bottom support is made in the form of a frame, hingedly mounted with the possibility of its rotation in the vertical plane on the movable carriage. The carriage interacts with the rail track with the help of telescopically-spring-loaded rollers and screw clamps. The upper support consists of a traverse with elastic shock absorbers at the ends, movable winch blocks, and a quick-release seat. 1 hp f-ly, 8 ill.

Description

(L

WITH

The invention relates to devices for lifting and producing work above the ground level, in particular, in the construction and operation of structures in the form of tunnels, mines, for example, in the metro.

A well-known staircase, including marshes and work sites, is interconnected by means of an axis on which a guide is attached to a spring-loaded bushing mounted on it, which is connected to a telescopic arm connected pivotally to a support post, which is connected to hinges parallel to the parallelogram. mechanism associated with the guide.

The use of known construction in metro tunnels is impractical due to cumbersomeness, inadequate mobility and transportability.

Closest to the invention is a ladder for operating on a contact network, including staircases, a working platform, wheel supports and clamps for fastening to a track.

The disadvantage of this solution is the difficulty in operation.

 The aim of the invention is to improve the usability.

The goal is achieved by the fact that the ladder is equipped with a telescopic upper bearing supported in the form of a traverse with elastic support elements at the ends and with movable blocks and a lower support in the form of a carriage with a winch movably fixed thereto and hingedly mounted on it with the possibility of rotation. in the vertical plane of the frame, the march is made of telescopic sections, and the wheel supports and clamps are fixed on the carriage, the wheel supports are spring-loaded, and the clamps are in the form of pincers and vi ate

so co

with a screw drive, and the movable blocks of the upper support are kinematically connected with the carriage winch.

The ladder is fitted with a fixed swivel seat on the upper support by means of pivotally mounted spreaders and struts with a swivel rotating seat.

FIG. 1 shows a general view of the side ladder; in fig. 2 - upper part of the ladder; in fig. 3 is a section A-A in FIG. 2 .; in fig. 4 — node I in FIG. one; in fig. 5 - lower part of the ladder; in fig. 6 is a section BB in FIG. 2; in fig. 7 is a sectional view BB in FIG. 2; in fig. 8 - section GG in FIG. 2

A ladder contains a flight of stairs, for example two, of any length that is sufficient to form a ladder of the required height. The flight of stairs is made in the form of separate sections 1 and 2, assembled for welding pipes from standard rolled light alloy materials (for example, aluminum or titanium). Sections 1 and 2 are interconnected by rigidly hooked brackets 3 and fixed by bolts 4. The upper ends of section 2 are telescopically connected to the upper support 5 and fixed by bolts 6. The upper support contains legs 7. rigidly connected to the crossmember 8, the ends of which are for stability of the stairs differently, curved smoothly and equipped with elastic supports 9 and horizontal blocks 10 for winch cables. On the cross-connection 11, the straps 12 and the spacers 13 secure the rotatable seat 14. The spacers 13 are hinged to the base of the seat and the steps of a flight of stairs rest. At the joints, the spacers and extensions are fixed with bolts 15. The blocks 10 are mounted on the cross beam 8 by means of bearings 16 pressed into the hub of the block and allows it to move freely along the cross bar and simultaneously rotate on it. Bearing 16 is pressed from a graphite asbestos mass.

The seat 14 is a quick-detachable portable device designed for a more comfortable and safe person position during operation. The backrest, the seat can be used in any design, but the method of fastening the swivel seat with the backrest is performed by the previously mentioned method.

The lower ends of the ladder section 1 are telescopically connected to the uprights 17 of the frame 18 and fixed by the sleeves 19 with screws 20. The frame 18 is the lower support for the ladder, the start of the flight of stairs and the hinges 21 are fixed with the possibility of its rotation in a vertical plane on the beam 22 of the movable carriage 23, at the ends of which spring-loaded running units are mounted, made in the form of brackets 24 welded on a beam 22 with cylinders 25 in which the guide rod 26 of the plug 27 and the spring 28 are placed, the force of the latter is adjusted by the bolt 29 rigidly connected to the plug. The fork 27 spans the ends of the arms 24, which are guides for the fork. For this purpose, the brackets have elongated grooves 30. Rollers 31 (made of electrically insulating material, for example, fiber)

the axle 32 is hinged in the forks 27. To firmly fix the stairs on the frame of the railway track, the carriage 23 is equipped with quick-acting tong-type grippers, made in the form of two

pivotally attached to the beam 22, levers 33, the upper ends of which are connected by a rigid coupling 34. For the mechanization of lifting materials, tools, etc. on the frame 18 of the lower ladder support

The two-way winch 35 is mounted with the possibility of horizontal movement with a safety handle. Cable 36 from the drum of this winch, if necessary, tosses

on blocks 10 for lifting a load or on any step for turning or holding a ladder.

To bring the stairs into working position (as an option), it is necessary to install the carriage 23 with rollers 31 onto the rail. of the way. Sections 1 and 2 of the flight of stairs, hang the upper support with a seat on the brackets of the lower support frame 18 specially designed for this purpose (not shown). In this position, the above set of stairs is in transport position for movement to the work site.

The movement of the carriage with the nodes hung on it can be performed manually or mechanically. Upon arrival at the site, the ladder may be assembled in the following order, for example.

The ladder section 2 is hung with brackets 3 on the step of the section 1 vi is fixed with bolts 4. Then the upper support is fastened with the supports 7 onto the upper ends of the ladder 2 and

is fixed by bolts 6. If necessary, fix the seat 14 to the upper support and fix the extensions 12 first, and then, turning the struts 13 on the hinges, set it to the required level of the ladder section 2 and fix it with bolts 15.

The ladder assemblies assembled by the above method (the total weight of these knots is 14 kg) are inserted into the racks 17 of the frame with the lower ends of the ladder 1 and fixed with clutches 19. By moving the carriage and tilting the ladder in the right direction all the way to the wall (tubing) in the right place . After that, pressing the beam 22, squeezing the springs 28 and the beam 22 of the carriage 23 is pressed to the rail, then the arms 33 are actuated by rotation of the sleeves 34 and tighten the carriage in the desired position. In addition, the levers 33 in the installation of the ladder can also be made using winch 35 on the carriage frame. In this case, the arrangement of the cable and the system of blocks should be performed according to FIG. 1 (see). Rise

and the lowering of materials and tools is carried out using the winch 35 of FIG.

1 (see dashed line). In the latter case, the cable

It is thrown over the steps of the stairs and fixed to the foot of the adjacent rail. The transport position of the carriage is limited by its transverse movement on the rail.

36

Fig. /

Claims (2)

1. A ladder for working on a contact network, including a flight of stairs, a working platform, wheel supports and clamps for fastening on a track, characterized in that, in order to increase the convenience of operation, it is equipped with a top support in the form of a cross bar, which is telescopically connected to the march. elastic supporting elements at the ends and with movable blocks and the bottom support in the form of a carriage with a winch fixedly mounted on it and with a frame pivotally mounted on it with the possibility of rotation in the vertical plane; moreover, the march is made of t The wheel sections and clamps are fixed on the carriage, wheel supports are spring-loaded, and the clamps are in the form of clamp-type grippers with a screw drive, and the moving blocks of the upper support are kinematically connected to the carriage winch. 2. The staircase according to claim 1, characterized in that it is provided with a quick-detachable rotating seat fixed to the upper support by means of hingedly mounted extensions and struts. Type A FIG. 2 Aa Fig.Z 4f FIG L X №I1 26 27 J / . BUT in-in gr 25 J / FIG. eight