摘要:
The invention relates to a device (1) for igniting an alumino-thermal composition (4), characterised in that it comprises an electric resistor (40, 43) for connecting two electrodes (20, 21) and to be supplied by an electric current source in order to generate heat by a Joule effect, said electric resistor being exposed to a medium containing oxygen and carbon so that the temperature rise of the medium by the resistor results in the formation of carbon monoxide, and then in an exothermal reaction of the latter with oxygen, thus generating a flame capable of igniting the alumino-thermal composition.
摘要:
The present invention relates to a welding mould, intended to the butt-jointing of two metal parts by casting a molten filler metal in a print defined by a mould. At least one of the mould elements (12, 13) comprises a keying member (17, 18) which is conformed and sized in such a way that it can be engaged in a space (8) between the two parts (1, 2) only when the latter are mutually spaced apart with a mutual spacing at least equal to a predetermined value so that, only in these conditions, the mutual assembly of the elements (12, 13) of the mould (10) around the parts (1, 2) to be welded is possible. Application particularly to weldings of railway rails, concrete reinforcement elements and metal sections.
摘要:
Attachment of a rail to a track support equipped with a lateral shoulder using an elastic attachment device. The device comprises a lateral stop (19) interposed between the shoulder (15) and the edge of a flange (21) of the rail, a plate-like elastic attachment (23) and anchorage (27), the said lateral stop (19) comprising at its top a region of contact (33) for the elastic attachment in order to delineate the deformation thereof.
摘要:
The invention concerns a railway track rail for slab-mounted track designed to be embedded in a casing (8), itself housed in a cavity of the slab (9). The support comprises a moulded material block (1) in a rigid shell (10) whereof the shape and external dimensions are adapted to the internal dimensions of the casing (8) to ensure replacement of the support by simple substitution. The invention is useful for making and repairing slab-mounted railway track.
摘要:
The invention concerns carriage for mounting and dismounting a power supply line of a mobile element, comprising a mounting body (4) including a base (13), and on a common side thereof, three flanges (81, 19) retaining by pairs, through elastic deflection prestressing, two contact wires (7) with the powered mobile element. The mounting and dismounting carriage comprises a central member (70) engaged with the free end (20) of the central flange (18), two side members (71) engaged with the free end (21) of a respective lateral flange (19) to temporarily space apart the latter from the central flange (18) and allow the wires (7) to be mounted or dismounted, together or preferably individually, relative to the mounting body (4), and a member for thrusting the wires (7) towards the mounting body
摘要:
La présente invention concerne la fabrication d'un rail longitudinal (1) d'alimentation d'un mobile (11) en électricité, du type comportant un corps (3) de montage sur un support et une plaque (2) d'usure par le mobile (11). Le corps de montage (3) comporte une base rigide (22) et une tête (23) divisée en deux moitiés (46) retenues en précontrainte de fléchissement élastique entre des rebords (7) de la plaque d'usure (2). Application notamment à la réalisation de rails d'alimentation électrique de véhicules ferroviaires ou d'engins de manutention.