CS265882B1 - Crane lift - Google Patents

Abstract

Crane lifting platform comprising a trolley arranged on a double-girder crane bridge, which with its running wheels runs on the bridge girders. A vertically arranged hydraulic telescopic cylinder is attached to the trolley, which carries the platform with a railing. To prevent tipping, the trolley is equipped with systems of horizontal and vertical support rollers, rolling on the flat surfaces of the crane bridge girders.

Description

(57) Crane lifting platform comprising a trolley arranged on a double-girder crane bridge that travels along the bridge beams with its traveling wheels.

A vertically arranged hydraulic telescopic cylinder is attached to the trolley, which carries a platform platform with a railing. The truck is equipped with systems of horizontal and vertical supporting rollers, which roll on flat surfaces of crane bridge beams.

CS 265882 Bl

265 882

BACKGROUND OF THE INVENTION The invention relates to a crane lifting platform comprising a trolley arranged on a two-crane crane, equipped with traveling wheels traveling on rails arranged on the crane beams and a telescopically arranged lifting platform.

Ensuring accessibility of roof parts of production halls is very difficult and necessary in practice, especially for installation and maintenance of lighting fixtures, washing of skylights, maintenance of automatic elements, control of ventilation wings of skylights, painting and so on. In most cases, this work is carried out using single-purpose atypical devices, which is both economically expensive and difficult to maintain safety at the required level.

The operative access to the internal roofs of production halls will then allow a revision of the concept of locating distributions of all kinds on walls and vertical constructions where space is considerably less and these distributions often reduce technological needs.

For this purpose, a crane lifting platform is known, comprising a trolley with traveling wheels arranged on a double-girder crane bridge, which travels on the bridge beams. A telescopically arranged truss column with a hoisting rope is detachably attached to the trolley. The inner part of the ridge carries a working platform, the truck is coupled with the crane trolley. The disadvantage of this arrangement is first and foremost the necessity of assembly and disassembly of the lifting platform after each use. Furthermore, it is necessary to connect to the crane cat, which limits the range of the truck on one side. Thanks to the lattice construction, the entire plant is robust and cost-effective.

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These drawbacks are largely overcome by a crane platform comprising a trolley arranged on a double-girder crane, equipped with both traveling wheels running on rails arranged on the crane bridge beams and a telescopically arranged lifting platform according to the invention, which is based on the lower part of the trolley. is mounted vertically arranged hydraulic telescope ί

- a 2,265,882 roller which carries a work platform ee with a railing arranged above the truck, the truck being further equipped on both sides with vexical systems and horizontal support rollers rolling on the flat surfaces of the crane bridge beams.

Independence of the crane cat is provided by trolley drive wheel mounted on the trolley.

If the truck is equipped with a hoist, it can also serve as a crane.

The crane lifting platform according to the invention is a fixed part of the crane and therefore the repetitive assembly and disassembly work is eliminated. It consists of commercially available parts, ensuring all elements of work safety. The whole equipment is easy to invest.

A crane with a fixed platform is used as a full-featured crane device operated from below or from the cab. Where a crane is already fitted, it serves as a second crane with modified technological parameters, eg double hook or otherwise equipped, it may be non-safe as an auxiliary crane.

An exemplary embodiment of a crane lifting platform according to the invention is shown in the accompanying drawings, in which Fig. 1 shows a hall with a suspended double-beam bridge having a lifting platform mounted on a trolley; Fig. 2 shows the same arrangement with two trolleys traveling on the lower flange of beams; Fig. 3 is a platform truck with two tackles, and Fig. 4 is a section AA of Fig. 2.

On the crane bridge beams are fixed rails 14, on which the trolley 1 travels with its traveling wheels 11. Movement of the trolley 1 is ensured by a drive 10 arranged on the trolley 1. A vertically arranged hydraulic cylinder 2 with telescopic piston 3, the inner part of which The roller 2 is further attached to the trolley 1 by means of struts 12. To ensure the stability of the trolley 1 and thus of the entire platform, the trolley 1 is equipped on both sides with vertical and horizontal support rollers 6, 7 rolling on the planar surfaces of beams 8,

265 882 of the crane bridge, eg rails 14 and upper flanges 8, 9. The drive of the roller 2 is provided by a hydraulic power unit 15, also arranged on the carriage 1.

The horizontal movement of the crane lift platform in the hall is ensured by travels 16 of the crane bridge and travels of the trolley 1.

"and

The vertical platform movement is then provided by the hydraulic telescopic cylinder 2. The crane lift platform can then be equipped with hoists 13 so that it can also serve as a crane.

Claims (4)

SUBJECT OF THE INVENTION Crane lifting platform comprising a trolley arranged on a double-axle crane equipped with both traveling wheels running on rails arranged on crane supports and a telescopically arranged lifting platform, characterized in that a vertically arranged hydraulic telescopic cylinder (1) is attached to the lower part of the trolley (1). 2), whose telescopic piston (3) carries a working platform (4) with a handrail (5) arranged above the trolley (1), the trolley (1) further being equipped on both sides with vertical and horizontal support rollers (6, 7) rolling on the planar surfaces of the crane bridge (8, 9). Crane lifting platform according to claim 1, characterized in that a trolley drive (10) of the trolley (1) is arranged on the trolley (1). Crane lifting platform according to claim 1 or 2, characterized in that the lower part of the hydraulic cylinder (2) is connected to the carriage (1) by means of inclined struts (12). Crane lifting platform according to Claims 1 to 3, characterized in that the carriage (1) is provided with at least one hoist (13).