| 单词 | hammer-headed crane |
| 释义 | > as lemmashammer-headed crane b. hammer-headed crane (see quot. 1910). ΘΚΠ society > occupation and work > equipment > lifting or hoisting equipment > [noun] > crane > types of quay crane1821 balance-crane1824 well crane1836 water crane1849 jenny1861 jib-crane1873 stacker1875 Titan1876 transfer-elevatora1884 whip-crane1883 Goliath1888 jigger1891 wharf crane1893 floating crane1903 tower crane1906 hammer-headed crane1908 portal crane1908 hammer-head crane1910 luffing crane1913 cherry-picker1945 stacker crane1959 monotower1963 Transtainer1964 portainer1966 1908 A. Tolhausen tr. A. Böttcher Cranes ix. 492 (title) Hammer-headed crane of 150 tons, constructed by the Duisburger Maschinenbau-A.-G. 1910 Encycl. Brit. VII. 370/2 The so-called ‘hammer-headed’ crane consists of a steel braced tower, on which revolves a large horizontal double cantilever; the forward part of this cantilever or jib carries the lifting crab, and the jib is extended backwards in order to form a support for the machinery and counter-balance. < as lemmas |
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