| 摘要 |
Universal stand with open housings can be horizontally separated into three assemblies: upper (I) and lower (III) which are similar, and a central assembly (II), each assembly being separable vertically into two parts. The two assemblies, upper (I) and lower (III), each consists of two similar caps (1). The central assembly consists of two similar half-parts (2), linked together and each containing two columns (8), surrounded by a half-girdle (17). The stand is prestressed in the horizontal plane by horizontal tie rods 3 and the assemblies, upper (I), central (II), and lower (III) are linked together by four vertical tie-rods (5) under tension. This universal stand can be converted into a two-high stand by replacing the central assembly (II) with a different central assembly (IV) specific to the two-high stand. <IMAGE> |
