| 摘要 |
The improved construction of the hydraulic sheeting support is composed of a hydraulic jack 1, affixed by a bolt of the jack housing 4 onto the thread 17 of the main cylinder 15, and likewise affixed with a bolt for fastening the operational cylinder onto the hydraulic sheeting support 13 on the operational cylinder 18, which is positioned inside the main cylinder 15. Above the safety bolt millimeter scale 24 is placed, which in combination with the centimeter scale 43, renders the exact support height of the hydraulic sheeting support. With the lock on the upper cylinder of the hydraulic sheeting support, the uncontrolled falling out of the upper cylinder 40 from the operational cylinder 18 is prevented. With the option of installing exchangeable upper pedestals 47, it is possible to elevate (and support) various load forms, and using the separate incline-adjustable lower pedestals of the hydraulic sheeting support 50, it is possible to install the same on inclined and uneven surfaces. This removes the fear that the support will twist or break, and affixation or fastening of the safety nut 23 on the upper edge of the main steel cylinder 15 releases long-term exposure to the effects of support loads on the hydraulic jack itself 1. |
