Abstract: The conveyor pan according to the present invention has a framework construction (1) having the bottom run (2) and an interchangeably constructed exchangeable tray (4) forming the top run (3), which can be lifted out, vertically supported on the framework (1). The framework construction (1) of the conveyor pan (50) has two roiled U-profiles forming the side walls of the conveyor pan, each of which has a vertically extending intermediate arm (11), an upper, outwards facing flange arm (12) and, lower outwards facing flange arm (13). The identically constructed but mirror imaged iron U-profiles (10), i.e.

Abstract: The invention relates to a plough chain strand 50 with horizontal chain links and vertical chain links including normal chain links 30, 40, the chain link legs of which are connected by chain link arcs and engage one another alternately in an intractable manner. In the chain strand 50 in front of and behind the chain connector link 10 is arranged in the same installation position as this at least one special chain link 20, the link legs of which comprise the same outer contour, especially the same width and the same thickness, as the outer legs of the connector link parts of the chain connector link 10. Due to the special chain links 20 preceding and trailing the chain connector link and having the same or a marginally larger contour as this, the wear of the chain connector link 10 of the chain strand 50 according to the invention is reduced or avoided if compared to known plough chains.

Abstract: The invention relates to a sprocket wheel for underground mining, especially for chain-driven chain scraper conveyors, with a first ring 2 of first tooth elements 5 distributed uniformly about the circumference of the sprocket wheel body 1, at least one second ring 3 or 4, disposed axially offset to the first ring 2, having further tooth elements 6 or 7, distributed uniformly about the circumference. The flanks of the tooth elements that face one another are provided with pockets 13, that serve as contact surfaces for the horizontal chain links 9. In order to increase the service life of the sprocket wheel, the contact surfaces in the pockets 13 of each tooth element 5, 6, 7 comprise a wear inlay 20 of wear-resistant material.

Abstract: The present invention relates to a conveyor pan (50) for underground face and gate conveyors, with a bottom pan (2) and a top pan (3) for the guidance of scrapers of a scrapper chain, the conveyor pan (50) having a welded frame construction (1) comprising side walls firmly fixed to one another with a conveyor base (8) and a means (60) of joining the conveyor pans. In accordance with the present invention the side walls comprise mirror image single part rolled profiles (10) with a constant profile form over the length of the conveyor pan (50), whereby the rolled profile (10) includes a base arm (11) and a top arm (12) both angled outwards as well as an extended intermediate arm (13) joining these, which is provided with an offset (14), onto which intermediate arm (13) on its inside at least one step (17) is formed for the support and welding on of at least one of the intermediate plates (40A) stiffening the frame construction (1).

Abstract: A drive system for chain sprockets 1 of chain drives, more particularly for driving chain scraper conveyors or chain-drawn ploughs for underground mining, with a drive assembly formed of an asynchronous motor and a gear mechanism 4, the gear mechanism 4 being designed as overload gearing and having a controllable multiple-disk clutch for overload equalisation with which the force flow between the asynchronous motor and the chain sprocket can be disconnected. The asynchronous motor comprises a frequency converter motor 10 and in the drive assembly between the motor shaft and the gear mechanism 4 a two-gear toothed wheel gear mechanism is arranged as a forward gear mechanism, with a starting gear position and a normal gear position, with which in the starting gear position the breakaway effect required for starting the loaded chain scraper conveyor or for releasing the plough can be attained.

Abstract: A toggle retainer (10) for toggle connections of conveyor pans (5) for chain scraper conveyors, guide troughs of mining machines and similar, with a locking plate (30) engaging across the locking extension (23, 24) on the toggle head (21, 22) of a toggle (20) and securing the toggle (20) in the toggle accepting pocket (9) against falling out to the side, both ends (31, 32) of which can be introduced into an insertion pocket (11, 12) in the toggle acceptor (1) and which for retention in the locking cut-outs (13, 14) of the toggle acceptor (1) have at least one aperture (37) into which the shaft (41) of a locking element (40) engaging in one of the locking cut-outs (13, 14) can be inserted. The locking plate (30) is provided with transverse borings (38, 39), one of which opens into the aperture (37) and in which a securing clamp (50) engagement can be inserted or is inserted retaining the shaft (41) by positive.

Abstract: The subject matter of the present invention relates to a plow guide for a chain-pulled plow for use in underground mining operations, with plow guide troughs 20 and 50 having multiple parts and being connectable to one another by means of coupling elements so as to be tension-proof and angularly movable. Each plow guide trough has a center piece 21 and 51 with superposed chain guide channels 10C, 10B, 10D, to both sides of which center piece an end piece, 22,23 and 52,53 is joined by welding, which end piece is a single-piece casting with superposed chain channel sections that are separated by a sliding spacer piece that is cast on. To make available a high-performance Gleithobel system with a high tool life, cast-on holding pockets 24,25 and 54, 55—which are open on the working face side—for toggle connections with toggles 1 as coupling organs are disposed on end pieces 22,23 and 52, 53. (FIG.

Abstract: The invention relates to a plough chain strand 50 with horizontal chain links and vertical chain links consisting of normal chain links 30, 40, the chain link legs of which are connected by means of chain link arcs and engage one another alternately in an intractable manner. In the chain strand 50 in front of and behind the chain connector link 10 is arranged in the same installation position as this at least one special chain link 20, the link legs of which comprise the same outer contour, especially the same width and the same thickness, as the outer legs of the connector link parts of the chain connector link 10. Due to the special chain links 20 preceding and trailing the chain connector link and having the same or a marginally larger contour as this, the wear of the chain connector link 10 of the chain strand 50 according to the invention is reduced or avoided if compared to known plough chains.

Abstract: The invention relates to a method for the control of the chain drive mechanisms of underground working machines and a correspondingly equipped chain scraper conveyor. The invention proposes to filter out a detection signal (Serk), representative of the currently arising vibrations of the chain (1), from the operating data of the main and auxiliary drives (I, II) by means of a detection device (34), and to take this to an active suppressor (35), which generates a time-variable control signal (STilgung) in accordance with a suppressor function, with which, in the frequency range of the vibration of the chain, a change is effected to a control value, e.g. (Ssoll) for the closing pressure adjustment of a multiple disc clutch (6) of at least one drive unit for the suppression of vibration by the abstraction of energy from, or the introduction of energy into the chain (1).

Abstract: A drive and tensioning station (10) of a chain scraper conveyor for mining operations with a machine frame base (20) having side cheeks (21) and a conveyor base (22), connected to a line of pans of the chain scraper conveyor, with a tensioning frame head (50) which can be moved in the direction of the line of pans, in whose side cheek plates (51) can be mounted the chain drum (3) for the scraper chain, and with a tensioning drive having at least one tensioning cylinder (6) to move the tensioning frame head (50) relative to the machine frame base (20). The tensioning frame head (50) has a box-like drawer (60) extending out over the side cheek plates (51) toward the pan connecting side, which is guided in a type of drawer guide (26) on the machine frame base (20) and that on the tensioning frame head (50) a top run pan (70) forming a drag plate in the top run (4) and/or a bottom run box (40) forming a drag base in the bottom run are removably fastened.

Abstract: The present invention relates to a conveyor pan (110) for underground face or gate conveyors, with a pair of side parts (101) comprising cast parts which include cast vertical arms (113) extending over the height of the bottom run (106) and the top run (107), a lower cast flange arm (111) extending outwards to the rear, a cast foot flange (112) extending inwards onto whose lower side a base plate (104) is welded which closes the bottom run to the bottom, as well as on the end faces cast accepting elements (114) for the means of joining conveyor pans, and with a conveyor pan base (105) preferably comprising a rolled sheet. This has tongue like segments (109) on both long sides, which engage in cut-out slots (135) in the vertical arms (113) of the side parts (101) and are welded to them on the outer of the side parts (101).

Abstract: The invention relates to a scraper chain for scraper chain conveyors, particularly for use in mining, with vertical chain links flattened in their longitudinal legs, which are integrally joined by nose-parts of circular cross-section, while the horizontal chain links have a constant circular cross-section all round. The scraper chain has a strength which is at least equal to that of a size 48 standard round link chain. The horizontal links serving as scraper connection have a pitch which is at least 10%, and preferably about 15%, greater than the pitch of the vertical links. The outer width of the horizontal links is at least 30% greater than the outer width of the vertical links. For the scraper chain according to the invention, sprockets whose dimensions are the same as those for scraper chains of considerably lower strength may be used.

Abstract: The present invention relates to a conveyor pan (50) for underground face and gate conveyors, with a bottom pan (2) and a top pan (3) for the guidance of scrapers of a scrapper chain, the conveyor pan (50) having a welded frame construction (1) comprising side walls firmly fixed to one another with a conveyor base (8) and a means (60) of joining the conveyor pans. In accordance with the present invention the side walls comprise mirror image single part rolled profiles (10) with a constant profile form over the length of the conveyor pan (50), whereby the rolled profile (10) includes a base arm (11) and a top arm (12) both angled outwards as well as an extended intermediate arm (13) joining these, which is provided with an offset (14), onto which intermediate arm (13) on its inside at least one step (17) is formed for the support and welding on of at least one of the intermediate plates (40A) stiffening the frame construction (1).

Abstract: The invention relates to a conveyor pan (150) for underground face and gate conveyors, with a bottom run (102) and a top run (103) for the guidance of a scraper of a scraper chain, with a frame work construction (101) which has side walls (110) comprising cast parts firmly joined to each other, with an intermediate flange (111) and an upper moulded flange lug (112) extending outwards from it and a lower moulded flange arm (113) as well as a moulded foot flange (120) extending inwards and bordering the bottom run partly to the side.

Abstract: The conveyor pan according to the present invention has a framework construction (1) having the bottom run (2) and an interchangeably constructed exchangeable tray (4) forming the top run (3), which can be lifted out, vertically supported on the framework (1) the framework construction (1) of the conveyor pan (50) has two roiled U-profiles forming the side walls of the conveyor pan, each of which has a vertically extending intermediate arm (11), an upper, outwards facing flange arm (12) and, lower outwards facing flange arm (13). The identically constructed but mirror imaged iron U-profiles (10), i.e.

Abstract: A drive shaft (5) with at least one chain wheel (7) for the drive of chain scraper conveyors, especially for underground mining operations, with a full-width drive shaft (5) mounted on both ends in bearings (4) on the machine frame (1), which has outer gearing teeth (6) for the positive rotational engagement with single part chain wheels (7), which can be pulled off the drive shaft (5), whereby the drive shaft (5) has outer teeth (6) along its longitudinal region, in which a through central gearing (6) reaches to the reduced diameters (17) of the drive shaft (5) in the proximity of the bearing housings (3).

Abstract: A drive station for a chain scraper conveyor for mining operations, in which the height position of a drive shaft, can be set by means of an adaptor plate (50), which can be fastened at different height levels on the machine frame of the drive station. The adaptor plates (50) includes a machine frame side inner side (52) and a drive side outer side (53), onto which the drive set can be fastened. The position of fastening screws (56), (57) in elongate holes (54), (55), in the adaptor plate (50) the direction of an asymmetric setting key (30) and the rotational position of an annular disc plate (40) with an outer ring (42) arranged eccentrically to an inner ring (41), determine the assembly position in each case.

Abstract: A toggle retainer (10) for toggle connections of conveyor pans (5) for chain scraper conveyors, guide troughs of mining machines and similar, with a locking plate (30) engaging across the locking extension (23, 24) on the toggle head (21, 22) of a toggle (20) and securing the toggle (20) in the toggle accepting pocket (9) against falling out to the side, both ends (31, 32) of which can be introduced into an insertion pocket (11, 12) in the toggle acceptor (1) and which for retention in the locking cut-outs (13, 14) of the toggle acceptor (1) have at least one aperture (37) into which the shaft (41) of a locking element (40) engaging in one of the locking cut-outs (13, 14) can be inserted. The locking plate (30) is provided with transverse borings (38, 39), one of which opens into the aperture (37) and in which a securing clamp (50) engagement can be inserted or is inserted retaining the shaft (41) by positive.

Abstract: The invention relates to a scraper chain for scraper chain conveyors, particularly for use in mining, with vertical chain links flattened in their longitudinal legs, which are integrally joined by nose-parts of circular cross-section, while the horizontal chain links have a constant circular cross-section all round. The scraper chain has a strength which is at least equal to that of a size 48 standard round link chain. The horizontal links serving as scraper connection have a pitch which is at least 10%, and preferably about 15%, greater than the pitch of the vertical links. The outer width of the horizontal links is at least 30% greater than the outer width of the vertical links. For the scraper chain according to the invention, sprockets whose dimensions are the same as those for scraper chains of considerably lower strength may be used.

Abstract: The invention relates to a method for the control of the chain drive mechanisms of underground working machines and a correspondingly equipped chain scraper conveyor. In chain scraper conveyors with a large distance between the main and auxiliary drive stations, e.g. a distance of more than 400 m, a chain breakage in the bottom run or a shaft breakage can arise, which can be traced back to vibration phenomena in the chain. The invention proposes to filter out a detection signal (Serk), representative of the currently arising vibrations of the chain (1), from the operating data of the main and auxiliary drives (I, II) by means of a detection device (34), and to take this to an active suppressor (35), which generates a time-variable control signal (STilgung) in accordance with a suppressor function, with which, in the frequency range of the vibration of the chain, a change is effected to a control value, e.