| 摘要 |
The present invention relates to a hydraulic jack for a gap to easily lift a heavy object of the low position near the ground in detail. To this end, the present invention includes: a main cylinder in which a ram exposed to the upper end is expanded and contracted linearly by hydraulic pressure; an elevation guide unit installed on a side surface of the main cylinder; a lift coupled with an end of the ram and having a support to which a load of heavy object is applied. According to the hydraulic jack for a gap, the lift elevates linearly while sliding along the side surface of the elevation guide unit and a friction reducing means is provided to reduce friction between the elevation guide unit and the lift. |
