2results about How to "Reduce working length" patented technology

This application discloses a palletizing device and a battery swapping station. The palletizing device includes a support frame and a transfer arm mounted on the support frame. The transfer arm is telescopic relative to the support frame to transfer battery packs. It also includes a drive unit and a support tray. The output shaft of the drive unit is connected to the support tray. The support tray is mounted on the support frame and spaced horizontally from the transfer arm. Driven by the drive unit, the support tray can move vertically and has a support position above the upper surface of the transfer arm and an initial position below the upper surface of the transfer arm, allowing the battery pack to be transferred onto the support tray or the transfer arm. The lifting device of this application increases the conveying stroke of the transfer arm, making it suitable for battery packs with different conveying stroke requirements, thus meeting the battery swapping needs of battery swapping vehicles with different battery pack sizes.

The invention discloses a rapid excavation method for a dam toe board. The method comprises the steps that an area needing to be excavated is determined in the axis direction of the toe board; a crawler-type down-the-hole drill is arranged to enter an operation area; drilling is conducted in the direction perpendicular to the axis of the toe board through a crawler-type down-the-hole drill; and after blasting, the stone in the excavation area is taken out, and rapid excavation operation of the dam toe board is completed. The crawler-type down-the-hole drill comprises a drill body, the drill body comprises a crawler and an extension arm connected with the front end, a large-stroke oil cylinder is arranged at the bottom of the extension arm, the tail end of the large-stroke oil cylinder is hinged to the extension arm, the output end of the large-stroke oil cylinder is hinged to the side surface of a drill arm, and the front end of the extension arm is hinged to the side surface of the drill arm; an adjusting sliding frame is connected to the surface of one side of the drill boom. The method solves the problems that the existing toe board excavation construction efficiency is low, the site is narrow, and construction is difficult due to the small angle slope ratio, and has the characteristics that the dam toe board construction efficiency can be improved, the cost is saved, a drilling machine fixing device is not required to be built, and technical over-excavation is avoided.