摘要:
A cutter bit assembly comprises a holder and a cutter bit. The holder is formed with a pocket into which the cutter bit can be inserted. The cutter bit is retained within the pocket by means of an arcuate wedge inserted into a tapered gap formed between respective curved support faces formed on the cutter bit and the holder.
摘要:
A cutter bit assembly comprises a holder and a cutter bit. The holder is formed with a pocket into which the cutter bit can be inserted. The cutter bit is retained within the pocket by means of an arcuate wedge inserted into a tapered gap formed between respective curved support faces formed on the cutter bit and the holder.
摘要:
A plough for winning material (such as coal) from a face has a plough body which supports a carrier for roof-level cutters. Means are provided for adjusting the vertical position of the carrier with respect to the plough body. The adjustment means comprises a worm mounted on the plough body, and a toothed rack associated with the carrier. The worm meshes with the toothed rack. The worm is driven through a reduction gear which is located on the goaf side of the carrier.
摘要:
A cutter-bit assembly employs an arcuate wedge 16 to secure a cutter-bit 2 within a pocket 4 of a holder 1. An additional deformable insert or resilient backing piece 18 is also located in an arcuate gap between the cutter-bit shank and a curved surface of the holder. The insert or backing piece co-operates with teeth 19 to lock the wedge in position.
摘要:
A plough box containing a chain wheel driving a chain to propel a chain used to move a plough is mounted for displacement alongside a machine frame at one end of a scraper-chain conveyor. To adjust the tension in the chain a motor is operated to drive a self-locking worm gearing which employs a worm wheel meshing with a rack fixed to the machine frame and extending in the direction of the chain.
摘要:
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. 2)
摘要:
A traction carriage for an underground mining plow, comprising a traction carriage body which can be inserted into a cavity in a plow body and which on the rear side of a guide recess has a front part whose ends pointing in the direction of travel form stop surfaces for interacting with counterstop surfaces in the cavity of the plow body. According to the invention, a damping device having a damping action in both directions of travel is integrated into the front part of the traction carriage. In order to provide a low-maintenance damping device which allows a more favorable transmission of force between the stop surface on the traction carriage and the counterstop surface on the plow body, the coupling piece can be moved relative to the stop surfaces counter to the restoring force of a damping system of the damping device that is arranged between the stop surfaces.
摘要:
A ploughing device for mining, with a ploughing tool having a plurality of plough bodies being interconnected by means of detachable coupling members, and with a longwall conveyor forming a plough guiding means, wherein at least one ploughing body is provided with pivotable cutter carriers. In order to have a ploughing device for mining different seam thicknesses in an efficient manner even and with low number of spare parts to be stored, the ploughing tool has three plough bodies, one forming a central ploughing body, at the end of which are connected a first and second lateral ploughing body by means of a first and second coupling members, wherein the coupling members in each case consist of a toggle bolt with toggle shaft and toggle heads being insertable on open-edged toggle pockets on the bodies.
摘要:
A connector device for connecting an attachment part, in particular a plough guide part, to a lateral element of a trough pan of a mining device, comprising first fittings arranged on the lateral element, comprising counter fittings arranged on the attachment part and detachably connectable to the fittings, and comprising at least one retaining piece, which in the closing position prevents detachment of the fitting and counter fitting and in the opening position permits detachment. In order to facilitate assembly and disassembly, to the retaining piece there is assigned, according to the invention, a hydraulic cylinder for moving the retaining piece between the closing and opening position.
摘要:
A baseplate plow guide section for guiding a baseplate plow. The baseplate plow guide section includes a guide element arranged on a packing side of a conveyor trough delimited by lateral profiles and a return trough delimited by trough profiles of a conveyor. The guide element has an upper chain channel and a lower chain channel provided with a guide slot for the plow baseplate. Reception pockets for toggle heads of connecting toggles for connection of adjacent baseplate plow guide sections are formed on the guide element. The guide element includes a casting which extends over a length of the baseplate plow guide section and on which the reception pockets and/or the packing-side trough profile of the return trough and/or a guide part for the plow baseplate of the baseplate plow are cast as integral components.