摘要:
An apparatus for the heat treatment of a continuously moved wire which loops in several turns round a drum arranged in a heat-treatment zone, has at least one tension roller which is assigned to the drum and around which each wire turn is looped in series with the drum, and the axle of which is displaceable in parallel and/or pivotable relative to the axle of the drum counter to the effect of a limited tension force exerted by a tensioning device, thereby preventing the wire from breaking in the event of an interruption in operation and the stopping of the drum.
摘要:
A unit for bonding two structural reinforced concrete components comprises a mounting strip having a pair of oppositely directed main faces and a plurality of connector rods held firmly on the mounting strip. Portions of the connector rods project at intervals along one side of the mounting strip and the connector rods have arms bent to a knee shape, the arms being positioned within the mounting strip. One of the main faces of the strip on the side away from the projecting portions of the connector rods defines at least two grooves parallel with one another and extending in the longitudinal direction of the mounting strip. The grooves have a width substantially equal to the diameter of the connector rods and a depth at least equal to the diameter. The mounting strip further includes holes at intervals along its length, the holes extending from the bottoms of respective ones of the grooves towards the opposite main face of the mounting strip. The connector rods are disposed individually through the holes, and the arms of the connector rods are arranged and held firmly within the grooves.
摘要:
In a multispot resistance welding machine, the electrodes (8,9) of which are fed with D.C. pulses from a rectifier unit (2) via two busbars (5,7) running across the welding machine, the busbars (5,7) are arranged on opposite sides of the plane of weld and the two poles (1,3) of the rectifier unit (2) are connected each to one of the opposite ends of the two busbars (5,7). The busbars (1,3) from the rectifier unit (2) are arranged parallel with the busbars (5,7) feeding the electrodes and the busbars (5,7) are at equal distances away from the centerline of the busbars (1,3) and are connected directly or via short leads to the electrides (8 and 9 resp.). Alternatively the two poles of a second rectifier unit arranged antisymmetrically with respect to the first rectifier unit on the opposite side of the plane of weld, are connected in parallel to the opposite ends of the two busbars.
摘要:
A method and an apparatus for extricating and transferring wires cut into lengths from a loose, random wire bundle (B) into a single layer (L) of parallel wires, in which first the loose, random wire bundle is fanned out into a plurality of random wire layers, and from the fanned-out, random wire layers, a partial bundle (T, T′) is extracted and put into the operative range of a portioning device (4, 4′), whereupon a plurality of wires (D) are extracted simultaneously as an intermediate bundle (Z) from the partial bundle and, for forming a bundle to be combed out (K), are put into the operative range of a plurality of combing-out devices (33); then for ordering the wires (D) of the bundle to be combed out, one wire (D2) at a time is engaged in succession by a combing-out device (33′; 33″) and combed out, and the combed-out wire then slides and/or rolls by gravity on inclined faces (20, 20′; 24) into the single layer.
摘要:
A welding machine, operating by the electric resistance welding method, for producing wire grid mat of longitudinal and transverse wires (L, Q) crossing one another and welded together at the crossing points, having a plurality of welding units (1, 1′), located transversely to the production direction, which at least for each longitudinal wire have one upper welding head (2) with an upper electrode, located above the grid production plane (X-X), and one lower welding head (5) along with a lower electrode movable counter to the upper electrode, the lower welding head being located below the grid production plane (X-X), having a common rail system (26, 28, 31) with at least two common rails extending along the welding line (S-S), for delivering the welding current to the welding electrodes, in which for continuously variable positioning of all the welding units transversely to the production direction (P1) along the welding line, adjusting devices (56, 57) and clamping devices (64, 65, 66; 64′, 65′, 66′) as well as drive mechanisms (60, 60′, 60″; 61, 62, 63) are provided.
摘要:
To improve sound damping in prefabricated building elements having two parallel welded wire mesh mats 1, 2, interconnected by web wires 7, 7′ enclose, therebetween, an insulating body (8) for example of foam plastic. Concrete is then sprayed on both sides over the mesh wires to form inner and outer shells. These concrete shells are interconnected by forming the insulating body with through-holes, which, upon concrete spraying, will form concrete webs or plugs (14, 14′) interconnecting the two shells, thus preventing resonant sound vibrations of the concrete shells. The through-holes (10, 11, 11′) can be molded during manufacture of the insulating body (8) or drilled or stamped therethrough, and may extend at right angles through the major extent of the foam body or obliquely, preferably downwardly and distributed randomly.
摘要:
A shaft seal containing magnetic liquid, for pump shafts or the like, consists of a permanent magnet which surrounds the shaft and is a distance away and one or more pole pieces connected to the said magnet. The pole piece, together with the shaft surface, forms an air gap in which the magnetic liquid is held by the magnetic field, so that a liquid sealing ring is produced. A volume of gas located between the magnetic liquid seal and the shaft channel to the medium prevents the magnetic liquid from coming into contact with the medium.
摘要:
An apparatus for extricating and transferring wires cut into lengths from a loose, random wire bundle into a single layer of parallel wires, the apparatus comprising a fanning device for fanning out the wire bundle (B) into a plurality of random wire layers at least one extraction device for extracting a partial bundle (T, T′) of wires (D) from the fanned-out wire layers (F) a wire guide conduit inclined relative to the horizontal and a portioning device for extracting an intermediate bundle (Z) from the partial bundle, transferring the intermediate bundle into an operative range of combing-out devices, and forming a bundle (K) to be combed out wherein each combing-out device has a plurality of continuously drivable combing-out wheels having a rotation direction and being distributed over the length of the wires (D) to be processed, and provided with teeth for combing out the wires (D), and wherein the rotation direction of the combing-out wheels is oriented counter to the inclination of the wire guide conduit.
摘要:
Device for producing a prefabricated cast concrete element having a plurality of central structural elements each comprising two parralel welded wire lattice mats, straight bridging wires welded at each end to the two wire lattice mats holding the wire lattice mats at a predetermined mutual separation and an insulating member penetrated by the bridging wires arranged with its cover surfaces parallel to the wire lattice mats and at a predetermined distance to the latter and having two concrete shells which each adjoin the insulating member and completely enclose the wire lattice mats of the structural elements, characterized in that a plurality of central structural elements are each arranged with their narrow sides abutting one another with selectable spacing between two shuttering walls and the spaces between the insulating members of the structural elements and the shuttering walls completely filled out with concrete.
摘要:
Apparatus for welding a wire mesh of crossing longitudinal and transverse wires, with a rotatable upper and lower electrode configured as a disk-like polygon, at least the upper electrode (2) being movable upwardly and downwardly and the upper and lower electrodes (2; 6) being rotatable to their working position in which a polygon surface extends parallel to the longitudinal wires, whereby the upper electrode and the lower electrode are provided at each polygon surface (8) with an internal distribution channel (13; 15) for cleaning air, preferably pressurized air, each distribution channel having at least one blow-out opening (14, 14′; 16, 16′) terminating in the center on the polygonal surface (8) and a distributor (3, 3′) for the cleaning air being associated with each of the upper electrode and the lower electrode, the distributors being each provided with a connector (11) for feeding cleaning air and with internally disposed air channels (12) connected to the connector and to the distribution channels of the upper and lower electrodes disposed in a working position.