This machine is called Bridge Gantry Crane. 這種機器叫路橋門(mén)式起重機。
It provides a theoretical basis for super-low headroom large tonnage overhead traveling crane development. 為柔性化設計理念提供了有力的支持，同時(shí)為超低凈空大噸位橋式起重機的成功研制奠定了理論基礎。
If the site is small, it may be commanded by a gantry crane. 假如場(chǎng)地小，則可采用龍門(mén)式吊車(chē)進(jìn)行操作。
One difficulty in every building for heavy industry is the arrangement of the supports for an overhead crane. 重工業(yè)的所有廠(chǎng)房均存在一個(gè)困難問(wèn)題，即如何布置橋式吊車(chē)的支承結構。
