| 摘要 |
A mounting device is provided for attaching an element with a spherical connection portion to a tubular member forming part of a tool carrying structure. The mounting device includes a support member with a part-cylindrical inner surface for contact with a tubular member and has two parallel radially extending wall portions which form between them a radially extending opening and guide way for a clamping block. The guide way is of a rectangular shape and has the same width as the diameter of the tubular member for sidewise entry of the support member onto the tubular member. The clamping block is formed at its one end with a part-cylindrical surface for contact with the tubular member and at its opposite end with a part-spherical surface for engagement with the spherical connection portion of an element to be attached to the tubular member, and a clamping ring is pressed by screws against the spherical connection portion to frictionally lock the attached element relative to the mounting device and the entire structure. |
