Dbt Gmbh

Dbt Deutsche Bergbau-technik Gmbh

Caterpillar Global Mining Europe Gmbh

Codelco

Deutsche Bergbau-technik Gmbh

Frank Fischer

Gerhard Merten

Jorg Wirtz

Siegfried Schmidt

Martin Broszat

Olaf Losbrodt

Dirk Vorsteher

Alfred Hefferan

John Cobley

Alister McAndrew

Uwe Tillessen

Jörg Wirtz

Siefgried Schmidt

Detlef Hahn

Eugen Baier

Bernd Steinkuhl

Frank Herrmann

Bernhard Wleklinski

Harry Martin

Ingo Pruss

Fernando Arturo Geister Bühlmann

Reinhold Brüggemann

Hans Tümpner

Pablo Antonio Letelier Parga

Juan Delgado

Willi Klingbeil

Jochen Hammel

Norbert Katthöfer

Jaime Hernan Carreno Valdés

Elmar Wiejack-Symann

Matthias Kohler

Matthias Köhler

Theo Wieger

The invention relates to a multipart chain fixing device for securing at least one conveyor chain on a trough element of especially an underground scraper chain conveyor. The fixing device comprises a bridge part (), which has a bridge bar () that at least partially overlaps the conveyor chain in a positive-locking manner and ends in two lateral side end portions (). It also comprises two side parts (), which are fastenable to the trough element pan and to which the side end portionsare releasably securable by positive-locking means. For providing a chain fixing device, inclusive of the associated trough element and the individual components, which offer increased safety in underground usage, combined with simple assembly, the side parts () are releasably fastenable in a positive-locking manner in cavities in the conveyor floor of the trough element.

Multipart chain fixing device, trough element and parts for the same

A pan section for combined conveying and winning apparatuses having a bottom run and a top run for guiding driver elements of a conveyor chain, as well as a welded frame structure which has two side cheeks which consist of one-piece rolled profiles. The rolled profiles have a constant profile shape with a bottom leg and a top leg, which are angled outwards in the assembled state, and an intermediate leg being provided with an offset for supporting and welding at least one intermediate plate. The pan section further includes a substructure connected to the bottom leg of the rolled profiles to connect both bottom legs to one another at a distance from the intermediate bottom. The substructure also has mounting pieces positioned at the ends below the bottom legs for transverse-force transmission means.

Pan section

A scraper for a scraper chain conveyor, having a top web, on which a chain attachment region for connecting the scraper to a scraper chain is configured, and having scraper wings for guiding the scraper on side profiles and bottom of a scraper chain conveyor. In order to provide scrapers with which a higher conveying output or a reduction of the drive output to be installed can be achieved, and which also enable a worn or defective scraper to be changed below ground, it is provided according to the invention that the scraper wings consist of a holding portion anchored to the metallic top web and a plastics sliding insert which can be releasably fastened to the holding portion. For the sliding inserts and their retention, various embodiments are proposed.

Scraper for scraper chain conveyors

In the method according to the invention and the arrangement or according to the invention for extracting extraction products in underground mining operations using the caving method, the extraction products () collapsing in an upper gate area () are extracted via at least one extraction funnel () or the like into an extraction path () driven below the gate and are transported away therein by means of an extraction conveyor (). According to the invention the extraction funnels () are arranged laterally beside the extraction conveyor () and lead at their lower end into a ramp surface () inclined towards the extraction conveyor, the extraction products extracted from the gate through the extraction funnels being transported slidingly over the inclined ramp surface to the extraction conveyor. The inclined ramp surface is preferably formed by a loading ramp () which is so arranged in an extraction chamber () branching off laterally from the extraction path that its one end (), disposed higher, is located below the extraction funnel and its other end (), disposed lower, forms an outlet () towards the extraction conveyor.

Method and device for extracting extraction products in underground mining

The present invention relates to a conveyor pan () for underground face or gate conveyors, with a pair of side parts () comprising cast parts which include cast vertical arms () extending over the height of the bottom run () and the top run (), a lower cast flange arm () extending outwards to the rear, a cast foot flange () extending inwards onto whose lower side a base plate () is welded which closes the bottom run to the bottom, as well as on the end faces cast accepting elements () for the means of joining conveyor pans, and with a conveyor pan base () preferably comprising a rolled sheet. This has tongue like segments () on both long sides, which engage in cut-out slots () in the vertical arms () of the side parts () and are welded to them on the outer of the side parts ().

Conveyor pan

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 ().

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 conveyors, guide troughs of mining machines and similar, with a locking plate () engaging across the locking extension () on the toggle head () of a toggle () and securing the toggle () in the toggle accepting pocket () against falling out to the side, both ends () of which can be introduced into an insertion pocket () in the toggle acceptor () and which for retention in the locking cut-outs () of the toggle acceptor () have at least one aperture () into which the shaft () of a locking element () engaging in one of the locking cut-outs () can be inserted. The locking plate () is provided with transverse borings (), one of which opens into the aperture () and in which a securing clamp () engagement can be inserted or is inserted retaining the shaft () by positive.

Toggle retainer for toggle connections

The guide shoe according to the invention for cutting machines with a pintype drive has an insertion pocket in which a coupling piece engages from above, which coupling piece is arranged on a guide arm of the cutting machine and to which the guide shoe is attached so as to be pivotable by means of a transverse bolt which passes through the insertion pocket. In order also to allow the guide shoe to be pivotable about a vertical axis, the coupling piece is provided with an upright vertical journal which engages from below in a corresponding bearing hole on the guide arm. In this case, in a preferred embodiment, the bearing journal is decoupled from transverse forces which are transmitted between the guide arm and the guide shoe via a transverse-force piece arranged on the coupling piece.

Guide shoe for a cutting machine

A conveyor chute for chain scraper conveyors, in particular stope conveyors, having a bottom aperture provided in the conveyor bottom forming an inspection or repair aperture and closed by way of a closure panel during the conveying operation. The closure panel is guided in slot-shaped apertures of the two side profiles of the conveyor chute by way of their opposite panel edges and secured against displacement by a locking device. The two side profiles of the conveyor chute are each formed of two profile strips in superimposed array which are not interconnected to the conveyor bottom in the region of the bottom aperture. The two side profiles form the slot-shaped apertures in which the locking of the closure panel in the closed position takes place only on one of the two side profiles.

Conveyor chute for chain scraper conveyors, in particular for use in

In the drive system according to the invention for a cutting machine which can be moved along a chain conveyor and has a pin drive chain arranged in a chain receptacle of the chain conveyor, the pin drive chain is attached at each of its two ends to a hydraulic tensioning cylinder device, with the aid of which the chain slackness which forms in the pin drive chain can be compensated. At the same time, holding devices, such as end stops, are provided in the region of the tensioning cylinder devices, which holding devices support or fix the chain section of the pin drive chain which is respectively under tensile loading.

Drive system having a pin drive chain for a cutting machine for

The guide shoe arrangement for disk shearers having a pin wheel gear drive and a coupling sleeve into which engages from above a coupling piece disposed on a positioning arm of the disk shearer, to which a guide shoe is pivotably connected by a gudgeon traversing the coupling sleeve. The height of the guide shoe is considerably less than its length. At the one sidewall of the guide shoe, a guide lug that is preferably formed as a hooked cleat is fixedly disposed. With the guide shoe arrangement it is possible to place the center of gravity of the guide show very low, such as about the guide plane of the guide shoe.

Guide shoe for a cutting machine especially for a drum or disk shearer

A mineral winning installation employs a shearer which is moved along a scraper-chain conveyor compound of individual pans mounted end-to-end. the shearer extends over the conveyor and is guided by guides provided at both sides of the conveyor. The body of the shearer has a driven chain wheel which meshes with an open-link chain serving as a rack abutment and laid on a bed alongside the side walls of the conveyor pans adjacent the mineral face. The side walls of the pans have upper and lower flanges which have strip-like projections directly outwardly from the pans. The chain is retained by the strip-like projections of the upper flanges of the pan side walls which overlap one side of the horizontal links and detachably hold-down strips which overlap the other side of the horizontal links. the hold-down strips are mounted for swivelling to release the chain links are detachably mounted to the support bars fixed to the support members.

Guide and drive arrangement for the winning machines of mineral winning

A drive gear and guide arrangement for a mining machine such as a disk shearer which operates above a chain scraper conveyor. The guide arrangement includes a guide rail arranged on a trough section of the chain scraper conveyor and extends along side of the chain scraper conveyor forming a chain duct for a drive gear chain which moves the mining machine along the conveyor. The guide rail includes a profile lug which engages over the horizontal chain links of the drive gear chain and holds the chain links on a chain support in the chain duct. The guide rails also includes a rolled profile which forms a sealing strip that closes off the chain duct of the drive gear chain on the side of the conveyor. The chain duct includes opening on the storing side which are designed to discharge fine materials which enter the trough section.

Growing community of inventors

Lunen, Germany

Frank Fischer