| 释义 |
layshaft|ˈleɪʃɑːft, -æ-|
Also lay shaft, lay-shaft.
[Prob. f. lay v.1 43.]
A short secondary or intermediate shaft driven by gearing from the main shaft of an engine; spec. one inside a gear-box that transmits the drive from the input shaft to the output shaft.
1888Lockwood's Dict. Mech. Engin. 205 Lay shaft, a small secondary shaft, which is placed beside, or at the end of a horizontal engine, for the purpose of actuating the valves. It is driven from the crank shaft by means of bevel or spur-wheels. 1908Westm. Gaz. 7 May 4/2 The whole of the valve mechanism being contained in a neat, hinged lay-shaft on top of the cylinder heads. 1911G. W. Hayter Motor-Car Mech. for Beginners (ed. 4) 45 For the next speed the gear wheel, B, is slid into mesh with the wheel marked C on the third or lay shaft, E. 1958Times Rev. Industry Feb. 84/2 The engine, clutch, and layshaft are mounted on a light chassis and protected by a hinged bonnet which allows easy access to the power unit. 1959‘Motor’ Manual (ed. 36) iv. 73 Spaced along the layshaft are other gears, the total number being equal to the number of ratios which the gearbox can provide. |