| 摘要 |
<p>1,240,609. Conveyers. LINERAIL, MANUTENTION PAR MOTEUR LINEAIRE. 25 Sept., 1969 [25 Sept., 1968 ; 17 Oct., 1968; 15 April, 1969], No. 47319/69. Heading B7L. [Also in Divisions F2 and H2] An overhead conveyer system comprises a truck 30 mounting the inductor 46 of a linear induction motor, the armature 42 of which is fixed to the inside face of the top wall 14 of a substantially tubular track having bottom flanges 26, 28 on which truck rollers 32 run and which define a slot 31 through which a load carrying member 40 depends. The truck is guided by means of rollers 36 engaging in the slot. The inductor 46 may be mounted on the truck such that when the motor is energized the electromagnetic attraction between inductor and a ferromagnetic plate 44 adjacent the armature or a ferromagnetic portion of the armature pulls the inductor towards the armature, the spacing between the two being fixed by rollers 62 on the inductor engaging the strip 44. When the motor is de-energized the inductor is biased away from the armature by gravity and a spring 58 so that braking members 64 carried by the inductor engage the rollers 32. The truck has current pick up brushes 128, 128<SP>1</SP>, 128<SP>11</SP> mounted in a support 126 carried by the truck which engage conductors 120, 120<SP>1</SP>, 120<SP>11</SP> carried in grooves 132, 132<SP>1</SP>, 132<SP>11</SP> having bevelled edges of resilient insulating supports 122, 124 spaced along the truck. The conductors are formed in sections, for example 120a, 120b, whose ends are scarfed and held with an expansion gap 144 between two connecting plates 140, 142 in a resilient support 136.</p> |
