| 摘要 |
1,121,147. Dynamometers. SOC. ANON. HEURTEY. Aug.17, 1965 [Aug. 17, 1964], No. 35111/65. Heading G1W. Apparatus for measuring forces exerted on a moving strip arranged to run around a roll rotatably supported by bearings on a shaft includes dynamometric cells interposed between the shaft and roll to measure forces causing displacement of the roll. The tension in a strip 39, Fig. 3, can be deduced from readings derived from two cells 53 arranged between blocks 50 on a fixed shaft 45 and end plates 52 of housings 49 on hollow shafts 44 supporting bearings 42, 43 for the end flanges 40, 41, of a roll 38 round a part of which the strip 39 moves. The tension in the strip causes pivotal movement of the shafts 44 at "ball and socket" joints between matching spherical surfaces of liners 48 on the shafts 44 and of blocks 47 adjacent the middle of the fixed shaft 45. An adjustable spring pressure is applied to the housings 49 to compensate for gravity effects on the roll and its ancillaries. The parts are oriented so that the cells and compensating springs operate in the plane bisecting the angle turned through by the strip in passing the roll, with the cells nearest the strip. With the device of Fig. 1, lateral forces exerted on the strip passing over a roll 1 cause a lateral displacement which is detected by cells 28, 33 in contact with pins 25, 32a bearing on thrust bearings 15, 16 associated with anti-friction bearings 6, 7 supporting the roll 1 on the fixed shaft 10. A spring 24 serves the dual purposes of centering and calibration. |
