| 摘要 |
A device for side puncturing in concrete pipes (3), consisting of a cutting unit (1) and a cutting head (8) which is axially projectable, backwards and forwards, along a preferably vertical plane, and a retaining unit (2) for a concrete pipe (3) containing two support roller sections (12, 13), upon which the concrete pipe rests, and of which, the nearest support roller (12) to the cutting unit (1) retains a stationary aspect, whilst the furthest support roller is movable respective to the stationary support roller. The retaining unit contains a device (14) for the forcible moving of at least one of the support rollers (12), as well as devices (16-19) for the fastening and securing of a concrete pipe lying on the support roller (3). The cutting unit (1) and the retaining unit (2) are movable in relation to each other on a plane which is parallel with the concrete pipe's (3) longitudinal axis.<IMAGE> |
