| 摘要 |
A pneumo-hydraulic rivet gun, comprising: a pneumatic motor (1 ), which sets a threaded tie-rod (2) in rightwards or leftwards rotation to engage the tie-rod (2) or disengage the tie-rod (2) from the threaded hole (3A) of a rivet (3); an oleodynamic system (4) for determinig a plastic deformation of a portion of the rivet (3), such as to secure the rivet (3) to a wall (P); a pneumatic booster (5) which activates a plunger (50) that compresses the fluid (F) of the oleodynamic system (4); a pneumatic system (6) provided with an auxiliary valve (60), which is opened by the tie-rod (2) and allows the supply of the rightwards rotating motor (1 ), and with a main valve (61 ), which is opened by a trigger (62) subsequent to the reclosing of the auxiliary valve (60) in order to allow the connection of an air supply conduit (65) to a source of compressed air: a hydro-pneumatic exchange valve (10), connected to the air supply conduit (65), oleodynamic system (4), pneumatic booster (5), the exchange valve (10) allowing, in the following order and subsequent to intervention by the operator on the trigger (62), activation of the pneumatic booster (5), the pressurisation of the oleodynamic system (4) with consequent plastic deformation of the rivet, the activation of the pneumatic motor (1 ) with leftward rotation of the tie-rod (3) which uncouples from the rivet (3) and, following the release of the trigger, a halt of the pneumatic motor. |
