Dbt Gmbh

Siefgried Schmidt

Jorg Wirtz

Gerhard Merten

Frank Fischer

Martin Broszat

Alister McAndrew

Dirk Vorsteher

Olaf Losbrodt

Alfred Hefferan

John Cobley

The invention relates to a conveyor pan () for underground face and gate conveyors, with a bottom run () and a top run () for the guidance of a scraper of a scraper chain, with a frame work construction () which has side walls () comprising cast parts firmly joined to each other, with an intermediate flange () and an upper moulded flange lug () extending outwards from it and a lower moulded flange arm () as well as a moulded foot flange () extending inwards and bordering the bottom run partly to the side. In accordance with the present invention the cast part () has at least one step () on the inner wall () of the intermediate flange () for supporting and welding on a plate (B) forming an intermediate plate, below which the intermediate arm () and the flange lug () form a profile strengthening (), and above which the intermediate arm () borders to the side an accepting space for the acceptance of an exchangeable tray () having rolled side profiles () welded to a conveyor base ().

Conveyor pan

The conveyor pan according to the present invention has a framework construction () having the bottom run () and an interchangeably constructed exchangeable tray () forming the top run (), which can be lifted out, vertically supported on the framework (). The framework construction () of the conveyor pan () has two roiled U-profiles forming the side walls of the conveyor pan, each of which has a vertically extending intermediate arm (), an upper, outwards facing flange arm () and, lower outwards facing flange arm (). The identically constructed but mirror imaged iron U-profiles (), i.e. with the flange arms (), () arranged facing away from each other, are joined firmly to each other by means of welded on plate strips (A,B) at about half height on the inner wall () of the intermediate arm (), whereby the plate strips (A,B) leave an opening () inside the conveyor pan (), which, with the exchangeable tray () removed, can serve as an inspection opening for the scraper chain, not shown, circulating in the bottom run () and equipped with scrapers. In the free space between the flange arms () toggle pockets are welded in with a positive engagement, which additionally stiffen the iron U-profiles and the plate strips (A,B) are supported by means of bottom run rails () on a continuous base plate () welded on beneath the iron U-profile ().

The present invention relates to a conveyor pan () for underground face and gate conveyors, with a bottom pan () and a top pan () for the guidance of scrapers of a scrapper chain, the conveyor pan () having a welded frame construction () comprising side walls firmly fixed to one another with a conveyor base () and a means () of joining the conveyor pans. In accordance with the present invention the side walls comprise mirror image single part rolled profiles () with a constant profile form over the length of the conveyor pan (), whereby the rolled profile () includes a base arm () and a top arm () both angled outwards as well as an extended intermediate arm () joining these, which is provided with an offset (), onto which intermediate arm () on its inside at least one step () is formed for the support and welding on of at least one of the intermediate plates (A) stiffening the frame construction ().

A toggle retainer for toggle connections of conveyor pans for chain scraper conveyers guide pans of mining machines conveyors etc with a securing plate ( ) which engages across one of the locking extensions ( ) of a toggle and secures it in the accepting pocket ( ), both ends ( ) of which can be inserted into an associated insertion pocket and retained therein by means of securing means ( ) engaging through a locking hole ( ) in the insertion pocket and an accepting hole ( ) in the securing plate ( ). The securing means ( ) comprise a sleeve-like deformable out outer part ( ) especially from plastics material, with a reinforcing core ( ) from harder material, especially a reinforcing core of metal.

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Bottrop, Germany

Siefgried Schmidt