| 摘要 |
The invention relates to a hydraulic jack safety device, in which the hydraulic jack comprises a housing containing at least: a reservoir (17) for a fluid; a piston which moves inside a cylinder; a pressurised chamber (16), a conduit (15) for returning the fluid to the reservoir; and a tool (26) which exerts an interlocking force, by means of contact maintained under the action of a user, in order to open a device (1, 2, 3, 4, 5, 6, 7, 8) that is used to open and close the return conduit. According to the invention, the aforementioned tool detaches from the return conduit opening/closing device when the force from the user is no longer exerted and the opening/closing device is closed by a return means when the interlocking force is no longer exerted. |
