2results about How to "Easy to propose" patented technology

This utility model belongs to the field of seedling technology, and in particular to a seedling tray, comprising: a base, including a frame-shaped main body, on which symmetrically arranged side sealing plates are provided; and a top tray, including a top frame, on which multiple through-holes are provided, and a main sealing plate forming a U-shape is provided at the bottom of each through-hole. The bottom of the main sealing plate is provided with a drainage hole. The main sealing plate and the side sealing plates cooperate to form multiple seedling pits. The entire top tray can be removed. The sides of the main sealing plate forming the U-shape are not blocked by the side sealing plates, so the sides are open, which allows for convenient removal of the nutrient soil and seedlings together. It eliminates the need to remove the nutrient soil and seedlings from the seedling pits one by one with a small shovel, making it more convenient. The removed nutrient soil is also more intact, preserving more roots and improving the survival rate of the seedlings.

This utility model provides a drilling rig reaming mechanism and drilling machinery. The drilling rig reaming mechanism includes a reaming device, which comprises a hollow base, a drive device disposed within the base, a hinge assembly, and a cutter head assembly. The cutter head assembly includes a cutter head mounting seat and a cutter head, with the cutter head fixedly mounted on the cutter head mounting seat, which is hinged to the base. The first end of the drive device is connected to the base, and the second end of the drive device is connected to the hinge assembly, which is hinged to the cutter head mounting seat. During its extension and retraction movement, the drive device can drive the cutter head assembly to rotate outward or inward to retract via the hinge assembly. This drilling rig reaming mechanism, by driving the cutter head assembly to rotate outward or inward to retract via the drive device, reduces the risk of cutter head damage while ensuring reaming efficiency and minimizing the occurrence of stuck drill accidents.