| 摘要 |
A structure (S), which is coupled to a three point control system can be guided in height. It comprises a prehensile support (2) with a pivoting arm (3), controlled by a double acting actuator (8), which is able to clamp the bundle against a fixed stop (10) in the support. The pivoting arm is constituted by a laterally sectioned cradle support pivoted at the end of a support (7) fixed to the prehensile support. The lateral cradle section is determined so as to exert, in the clamping position, in combination with the fixed stop, two directly opposite clamping forces. The prehensile support is coupled to vertical uprights (4,5) which slide in vertical mountings. The actuator is in a fixed position in the support (7), and its rod (8a) is coupled to the pivoted part (3a) of the pivoting arm.
|
