| 摘要 |
The invention relates to a hydraulic hoist employed for lifting industrial loads having a weight of up to 1500 daN. According to the invention, the hoist consists of a lifting assembly () driven by a hydraulic cylinder (), a manual pump (), an electro-hydraulic group (), a secondary battery () and an electronic supply and charging group (), the hoist being driven either by means of the manual pump (), or electro-hydraulically, by means of an electrical pump () and a three-way distributor () which, together with a direction valve () ensures the correct direction of the fluid towards the hydraulic cylinder (), using the main power supply network as an electric power source or, when the supply with current at 230 V is not possible, using the secondary battery (). |
