초록 ▼

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, wit

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. In accordance with the present invention the cast part (110) has at least one step ( 115) on the inner wall (114) of the intermediate flange ( 111) for supporting and welding on a plate (105B) forming an intermediate plate, below which the intermediate arm (111) and the flange lug (120) form a profile strengthening (149), and above which the intermediate arm (131) borders to the side an accepting space for the acceptance of an exchangeable tray (104) having rolled side profiles (180) welded to a conveyor base ( 184).

대표청구항 ▼

The invention claimed is: 1. A conveyor pan, for underground face and gate conveyors, with asymmetrical side walls, comprising cast parts joined together by a plate welded onto intermediate arms which comprise an upper outwardly facing cast flange lug extending from the intermediate arm, a lower ca

The invention claimed is: 1. A conveyor pan, for underground face and gate conveyors, with asymmetrical side walls, comprising cast parts joined together by a plate welded onto intermediate arms which comprise an upper outwardly facing cast flange lug extending from the intermediate arm, a lower cast flange arm extending outwards, and a cast foot flange extending inwards, partly bordering a bottom run for the guidance of a scraper of a scraper chain, onto which a bottom plate is welded which closes the bottom run to below, in which at least one of the cast parts has at least one step on an inner wall of the intermediate arm, essentially at half the height between the lower flange arm and the upper flange lug for the support and welding on of a metal sheet forming an intermediate plate, beneath which the intermediate arm and the foot flange form a profile having a greater thickness than the upper intermediate arm and above which the intermediate arm borders to its side an accepting space for the acceptance of a top run having a rolled side profile welded to a conveyor base in which, the conveyor pan has an exchangeable tray with essentially T-shaped side profiles which include horizontal webs which are welded to the flange lugs of the side walls as a retaining means for the exchangeable tray. 2. A conveyor pan according to claim 1, in which the intermediate arm has a second step on its inner wall for the support of the conveyor base, which is formed above the first step for the support of the intermediate plate. 3. A conveyor pan according to claim 1, in which the intermediate arm has an arm section above the step(s) and an arm section below the step(s) whereby the thickness of a wall of the upper intermediate arm section is more than 30%, and more than 50% smaller than the wall thickness of the lower intermediate arm section in the range of the profile. 4. A conveyor pan according to claim 1, in which the top run is an exchangeable tray whose side profiles and conveyor base, are provided in the thickness of their wall with a wearing or consumable layer. 5. A conveyor pan according to claim 4, in which the side profiles of the exchangeable tray have an inner side matched to the profile shape of the scraper. 6. A conveyor pan according to claim 4, in which the conveyor base extends out to the sides beyond vertical arms of the side profiles of the exchangeable tray and their inner sides and is supported on a second step. 7. A conveyor pan according to claim 4, in which the conveyor base is welded in between vertical arms of the side profiles of the exchangeable tray, which is supported by feet of their vertical arms on the intermediate plate. 8. A conveyor pan according to claim 1, in which a cast in nose is formed on an inner wall of the upper intermediate arm section at the height of the flange lug. 9. A conveyor pan according to claim 1, in which the flange arm extends out wards beyond the flange lug and forms an abutment foot onto the ground. 10. A conveyor pan according to claim 1, in which a lower intermediate arm section is provided with a chamfer of some 60째 on its outer wall below the step(s) and the chamfer, the lower intermediate arm section and a top wall of the flange arm form and border a cut-out for the positive support and acceptance of corresponding protrusions on a means for joining conveyor pans and a connecting bracket. 11. A conveyor pan according to claim 1, in which weight reducing depressions stiffened by cast web ribs are provided in an outer wall of a lower intermediate arm section, an underside of the flange arm and in a base wall of the foot flange. 12. A conveyor pan according to claim 1, in which side walls are constructed differently from each other, whereby on one side wall on a spoil side a connecting bracket for an advancing beam is cast in and on another side wall on a face side at least two supporting ribs are cast. 13. A conveyor pan according to claim 12, in which vertically extending support webs are cast on the side wall on the spoil side for support of a spoil side machine track or angle plate, or similar. 14. A conveyor pan according to claim 1, in which a cast or welded on connecting bracket and cast on supporting ribs stiffen the flange lug opposite the flange arm. 15. A conveyor pan according to claim 1, in which a longitudinal cut out is cast below the foot flange, onto which a bottom plate, engaging the foot flange from underneath, is welded on. 16. A conveyor pan according to claim 1, in which the foot flange has a vertical front surface reaching almost to the ground, whereby the base plate is welded between the front surfaces of the foot flanges of both side walls. 17. A conveyor pan according to claim 1, in which a lower intermediate arm section makes a transition from a profile thickening via a curve shaped profile contour on its inner wall into the foot flange. 18. A conveyor pan according to claim 1, in which two metal strips arranged parallel to each other leaving an opening between themselves form the intermediate plate. 19. A conveyor pan according to claim 18, in which one of the metal strips on the end of the conveyor pan extends out over both side walls and the other strip is arranged set back from the end of the conveyor pan. 20. A conveyor pan according to claim 1, in which the exchangeable tray is welded using a continuous long welded seam. 21. A conveyor pan according to claim 1, in which an exchangeable tray has side profiles each with a vertical web and a horizontal web where the exchangeable tray is welded using a single continuous long welded seam, as a retaining means for the exchangeable tray in a gap between the side profile and the side wall, whereby the horizontal webs end in a binding manner with associated flange lugs of the side walls. 22. A conveyor pan according to claim 20, in which for the disassembly of the exchangeable tray the long welded seam is separated by machine. 23. A conveyor pan according to claim 1, in which metal strips form the intermediate plate and the conveyor base are provided with curve shaped edges produced by flame cutting, whereby the profile of the curve of one edge is complementary to that of the other edge. 24. A conveyor pan according to claim 1, in which the exchangeable tray is configured as an inspection tray and comprises three identically constructed tray sections each having a conveyor base section and two essentially T-shaped side profile sections with vertical arms and horizontal arms, whereby in the two outer tray sections the horizontal arms are welded using a long welded seam to the inner walls of the side walls and to the noses on the side walls and to the outer edges of a horizontal web on the horizontal arm with an upper side of the flange lug and the centre tray section is retained by using removable tray fastening means onto the two other tray sections and to the cast parts forming the side walls. 25. A conveyor pan according to claim 24, in which the conveyor base sections of all the tray sections are provided with curved edges produced by flame cutting whereby a curve profile of one edge is formed complementary to that of another edge. 26. A conveyor pan according to claim 1, in which the conveyor pan joining means comprises forged toggle pockets welded onto the side walls in which the toggle heads of toggle bolts can be inserted and the toggle pockets extend out over the side walls at one end of the conveyor pan and at the other end of the conveyor pan are set back. 27. A conveyor pan according to claim 26, in which the toggle pockets are cast integrally into the side walls which comprise cast parts. 28. A conveyor pan according to claim 26, in which in a face side side-wall of a face conveyor the upper flange lug is formed exclusively in the region of the welded on toggle pockets and that this side wall is strengthened by means of cast in ribs.