DE3004524A1 - Telescopic excavator breaker bar extension - has cable and pulley moving inner piece inside outer piece - Google Patents

Abstract

An inner piece, sliding in an outer piece, has a breaker hook detachably fastened to it, on a telescoping excavating bar, (as fitted to a hydraulic excavator). The outer part (5) of the extension (4) has an inner part (6) displaceably mounted in it, and can be telescoped by means of one or more cables (9,11), and one or more deflecting rollers (10,12). The cable can be attached to the front of the outer part and rear of the inner part, and guided across a roller at the front of the outer part. The inner part is pref. lockable in its end positions. This requires no extra equipment for handling, and effective increases range and height of reach.

Description

Extension for a telescopic demolition handle

The invention relates to a 'acquisition for a telescopic Lbbruchstiel with an inner part displaceably mounted in an outer part to which a demolition hook is detachably attached.

There are telescopic demolition handles known for hydraulic excavators, which can be built in instead of the spoon and with which an effective abrucji machine can be created.

However, it is disadvantageous that the use of the excavator equipped in this way is not possible everywhere due to the limited range and height.

animal invention is based on the task of increasing the range and reach height to create an extension for a telescopic demolition handle, which can be operated easily and with the existing operating devices.

According to the invention this object is achieved in that in an outer part the extension, an inner part is movably supported and secured by means of a rope or several ropes and a pulley or multiple Utlenkrolle is telescopic.

The advantages achieved by the invention are that the Extension can be attached to an existing demolition handle and is telescopic is. In addition, it is light and simple and with the controls already in place operable.

An advantageous embodiment of the operation is that the Rope at the front end of the outer part of the demolition handle and at the rear end of the inner part of the extension and attached via one at the front end of the outer part the extension arranged pulley is guided.

this makes it possible to use the inner part of the extension when telescoping of the demolition handle.

In the end positions of the inner part of the extender is through suitable Verrieqelunqsvorrichtungen possible to fix these end positions.

In a further advantageous embodiment of the invention are two ropes on the one hand on the front land of the outer part of the ibbruchstieles as well attached to the rear end of the inner part of the extension and one rope over it a pulley arranged at the front end of the outer part of the extension and the other rope via one arranged on the rear end of the inner part of the Abrucnstieles Deflection roller out.

In this way it is possible to lengthen the inner part of both in and out.

For weight reasons it can be advantageous to use the demolition hook to integrate the extension.

In the following the invention will be explained with reference to the example of the drawing explained in more detail.

In an outer part 2 of a demolition handle 1, an inner part 3 is by means Guide rollers or slideways 7 are slidably mounted.

The inner part 3 can move in and out with the aid of a cylinder 13 will. An extension 4 is bolted to the front edge of the inner part 3. the Extension 4 consists of an outer part 5 and one in it by means of guide rollers or slideways 8 displaceably mounted inner part 6 on which a demolition hook 14 can be attached.

There are two for inserting and extending the inner part 6 of the extension 4 Ropes 9, 11 on the one hand at the rear end of the inner part 6 of the extension 4 and on the other hand attached to the front end of the outer part 2 of the demolition handle 1.

The one rope 11 is around a at the rear end of the inner part 3 of the Abbruchstiles 1 arranged pulley 12 and the other rope 9 around one at the front End of the outer part 5 of the extension 4 arranged deflection roller 10 out. the Reeving is chosen so that the telescopic path of the demolition handle 1 dem Telescopic path of the extension and 4 is the same.

Using other suitable cable guides, it is possible to use a telescopic path to obtain, for example, half or twice the telescopic path of the demolition handle is equivalent to.

The demolition hook 14 can with the front end of the inner part 6 of the Extension 'be integrated.

Claims (5)

Claims 1. Extension for a telescopic demolition handle with an inner part which is mounted displaceably in an outer part and on which a demolition hook is removably attached, characterized in that in an outer part (5) of the Extension (4) an inner part (6) mounted displaceably and by means of a rope (9) or several ropes (9, 11) and a pulley (10) or several pulleys (10, 12) is telescopic. 2. Extension according to claim 1, characterized in that the rope (9) at the front end of the outer part (2) of the demolition handle (1) and at the rear End of the inner part (6) of the extension (4) attached and one on the front End of the outer part (5) of the extension (4) arranged deflection roller (10) out is. 3. Extension according to claim 2, characterized in that the inner part (6) the extension (4) can be locked in its end positions. 4. Extension according to claim 1, characterized in that two Ropes (9, 11) on the one hand at the front end of the outer part (2) of the demolition handle (1) and at the rear end of the inner part (6) of the extension (4) are attached and the one rope (9) over one at the front end of the outer part (5) of the extension (4) arranged pulley (10) and the other rope (11) via one at the rear End of the inner part (3) of the demolition handle (1) arranged deflection roller (12) out are. 5. Extension according to one of claims 1 to 4, characterized in that that the demolition hook (14) is integrated with the extension (4).