GB2190857A

GB2190857A - Improvement in stone crushers

Info

Publication number: GB2190857A
Application number: GB08711768A
Authority: GB
Inventors: Hakon Kjernsbekk
Original assignee: Individual
Current assignee: Individual
Priority date: 1986-05-29
Filing date: 1987-05-19
Publication date: 1987-12-02
Anticipated expiration: 2007-05-19
Also published as: GB8711768D0; FI872354A; SE503652C2; GB2190857B; FI872354A0; SE8702152L; SE8702152D0

Abstract

A stone crusher (7) is provided with attachment means which are complementary to the attachment means for support of the excavated jib (2), (3), (4) of an excavator (1), and has provisions for connecting the hydraulic equipment on the stone crusher (7) to the hydraulic system of the excavator. …<IMAGE>…

Description

SPECIFICATION Improvement in stone crushers The present invention relates to an improvement in stone crushers of a suitable type and size, usual ly comprising a feeding hopper, crushing jaws, power unit, conveyorforthe crushed stone etc. Stone crushers are usually constructed forstationary use and have a fairly high capacity. Stoneto be crushed will haveto be collecte atthe location were it is found and transported to the crusher. Aftercrushing tothe required size the crushed stone istransported to the place where it is to be used, perhaps in the neighbourhood of where the stonewasfound.

In the building activitythere is frequently a de mand forcrushing of stone or at leastfora drastic reduction in the stone dimensions. If an area where a foundation is to be constructed has been blasted, the blasted stone which is to fill the drainage outsidethe foundation will usually be so large that it can easily damagethefoundation accidentally and itshould be reduced to in size forthat reason and because it then will be easierto handle and give a betterfilling of the ditch with correct drainage of same. The problems of having stone crushed in this case are however large duetotheabovementionedlongandcostlytrans- port back and forth. If a more or less reduced stone is boughtfor safety reasons the stone will also cost money and quite a lotof large stonewill be leftas superfluous, stonewhich is difficuitto utilize.

An ideal situation would be to crush the large stone on the site and fill it in the ditch around the foundation where the stone originallywastaken out.

This is however not possible because no easilytrans- ported and inexpensive crushing devices orstone crushers are available and the purpose of the present invention is therefore to arrive at an improvement in stone crushers, making crushing of stone, on the loc ation where it was taken out, possible in an economical mannerforfurther use, and this is achieved according to the invention by constructing the stone crusher as a type of auxiliary equipmentfor an excavator of which there is at least one and frequently two on each building site. This is made possible by providing the stone crusher with attachment means which fit the corresponding attachment means, the excavator is provided with for support of the ordinary excavator jib. Excavators are provided with a powerful hydraulic system and when the stone crusher also is powered hydraulically it is a simple matterto connect it to the hydraulic system on the excavator so that the powerful diesel engine on the excavator also will drive the stone crusher. With this design the driving meansforthe stone crusherwill be much less expensive than if the stone crusher were designed as a complete unit. A conveyor carrying the crushed stone away and preferablyto the place where it is to be used may also be driven hydraulicfrom the hydraulically system on the excavator.

If two excavators are available it is advantageous, when the work on the building site has arrived that far, to provide one of the excavators with the stone crusher while the other excavator is used forfilling same. As the stone crusher is mounted on an excava torwith its own traction belts it is easyto move it around on the building site as required and the unit is fully complete i. a. with a comfortable, perhaps heated steering cabin and the same operating means used during excavation is also used for moving and steering of the unit, including the stone crusher.

The factthatthere exist a number of different makes and models of excavators should not involve serious problems as it is a simple matter to construct adaptors which can adapt a stone crusher in accordance with the invention to any model of an excavator. This also applies to the connection of the hydraulic systems but in this case a high degree of standardisation is an advantage.

Claims

The invention is characterised bythefeatures resited in the claims and will in the following be described by a diagramatically with reference to the drawing which in perspective shows a stone crusherwith the improvement in accordance with the invention, mounted on an excavator in cooperation with a further excavator. An excavator 1 has a jib 2 with hydraulic cylinders 3 for operation of a grab 4. The excavator is provided with traction belts 5 and is mounted rotatably on the base where the traction belts 5 are mounted. The excavator 6 is constructed in the same manner, butthe excavating jib 2 has been detatched and stone crushed 7 is supported in the attachment meansforthe jib. The hydraulic motorforthe stone crusher is driven from the hydraulic system of the excavator and this also is the case for a conveyor 8 which extends to one side. With the traction belts 5 the complete unit 6,7,8 can move to the location where the conveyor 8 is to deposite crushed stone 9 whilethefirst mentioned excavator 1-5 isfilling the stone crusherwith stone taken from the same build- ing site. The fact thatthe stone crusher 7 can be moved with the traction belts 5 and swing on a verti cal axis the end of the conveyor 8 can deposite crushed stone directly on the place where the stone is to be used without any intermediate transport and with only minimum subsequent work as the stone is crushed to a size which is mostsuitableforthe purpose. Furtherfeatures are notto be described as a person skilled in the art is expected to encounter no problems in designing the attachment means for sup- porting a stone crusher on the excavator in the same manner asthe attachment means on an excavator jib. When the excavator 5-6 again is to be used for its original purpose the stone crusher can be parked on a suitable support, the connection between the stone crusher and the excavator is released and the excavator is backed away from the stone crusher wherafter it in a corresponding manner is driven overto the stored excavator jib for simple and rapid attachment of same mechanically and hydraulically. CLAIMS

1. improvement in stone crushers comprising a feeding hopper, crushing jaws, driving means, conveyorforcrushed stoneetc. characterised inthatitis provided with attachment means which are com plementaryto the attachment means on an excavator (6) forsupport of the excavatorjib (2).

2. Improvement in stone crushers as claimed in claim 1 characterised in thatthe driving means for the stone crusher (7) is hydraulic and adapted to be driven from the hydraulic system of the excavator (6).

3. Improvement in stone crushers as claimed in claim 1 and 2 characterisedin that the conveyor (8) for crushed stone (9) is adapted to be driven from the hydraulic system of the excavator (6).

4. Astonecrusher, substantiallyashereinbefore described with reference to the accompanying drawings.