| 释义 |
ˈking-bolt
A main or large bolt in a mechanical structure. a. An iron rod in a roof, used instead of a king-post. b. A vertical bolt passing through the axle of a carriage or railway car, and forming a pivot on which the axle swings in taking curves. c. A bolt from which the cage of a mining shaft is suspended.
1825J. Nicholson Operat. Mechanic 563 Constructed with one king-bolt in the middle. 1874Knight Dict. Mech. 839/2 The king-bolt is the center of oscillation, and the fifth-wheel forms an extended support to prevent the careening of the carriage-bed. 1882Rep. to Ho. Repr. Prec. Met. U.S. 591 As soon as these arms become engaged and fixed in the guides, the whole weight of the cage is transferred to the king-bolt by which it is suspended. 1888C. F. Mitchell Building Constr. i. ix. (1889) 129 Feet of King or Queen Bolts. These may pass through cast-iron sockets which are indented into the tie-beam. |