58results about How to "Guaranteed wind resistance" patented technology

The invention discloses a movable skeleton for blueberry planting greenhouses. The movable skeleton comprises a plurality of vertical support rods, L-shaped horizontal support rods and a slidable support device; rectangular platforms are arranged at both the upper and lower ends of the vertical support rods; the L-shaped horizontal support rods are fixed between the rectangular platforms at the upper ends of every two vertical support rods; the slidable support device comprises a plurality of symmetric support sliding blocks, support plates, first connection rods, second connection rods and arc-shaped support frames; convex sliding blocks are arranged on the support sliding blocks; the convex sliding blocks are glidingly arranged in a convex sliding chute; the support plates are arranged at the upper ends of the support sliding blocks; hinge seats are arranged on the support plates; the first connection rods and the second connection rods are respectively hinged with the hinge seats; the arc-shaped support frames are horizontally arranged on two symmetric support plates through bolts; and the adjacent first connection rod and the second connection rod on the same side are hinged with each other. The movable skeleton is simple to assemble, stable in structure and not easy to collapse.

The invention belongs to the technical field of sailing boats, and particularly relates to a folding structure of a sailing boat sail. A foldable sail structure of a full-sea-condition long-voyage unmanned sailboat comprises a base, a vertical frame is installed above one end of the base, the vertical frame is of a hollow structure, a plurality of lifting blocks are installed in the vertical frame, a cross beam rod is installed at one end of each lifting block, and canvas is installed on the cross beam rods; the lifting blocks are connected with the vertical frame in a sliding mode, every two adjacent lifting blocks are connected with each other, and a lifting mechanism used for controlling the lifting blocks to ascend is further installed in the vertical frame.When the structure is used, rising and falling of the canvas can be achieved only by controlling operation of a first motor, the sail of the unmanned sailboat is convenient to unfold and fold, meanwhile, a cloth groove is formed in the inner side of each cross beam rod of the sailing boat, and the canvas penetrates through the cloth grooves, so that it is guaranteed that the canvas can borrow force from the cross beam rods no matter which side of the canvas is blown by wind, the wind resistance strength of the canvas is guaranteed, and the phenomenon that the sailing boat is damaged is avoided.