| 摘要 |
<p>Hand operable hydraulic transmission tube bending device whose matrix-die holding bar (1) is moved by a fluid (oil) through a hydraulic pump. The reservoir (11) of the fluid is formed directly in the arm (14), on which the support (15) of counterdies (16) is installed, one of the walls of said reservoir being sealingly deformable. The pump, the conduits, the reservoir and the chamber in which the matrix-die holding bar slides form a closed circuit, the fluid arriving from the pump to the head (3) of the matrix-die holding bar through a conduit that is formed in the fixed part of the handle and which builds up the outer part of the handle (7) and is concentric with the cylinder (5) in which said bar slides.</p> |
