70results about How to "Avoid accidental loss" patented technology

The invention provides a cable duct cover plate lifting and carrying device which comprises a carrying base plate, a lifting frame arranged on the carrying base plate in a sliding mode and a pair of hydraulic cylinders. Walking wheels are arranged at the bottom of the carrying base plate, one side of the carrying base plate is provided with a semi-circular opening, the lifting frame corresponds to the semi-circular opening, a pair of hydraulic cylinders is installed at the top of the lifting frame, telescoping rods of the hydraulic cylinders are provided hooks, and the hooks are located above the semi-circular opening. The cable duct cover plate lifting and carrying device has the advantages of being scientific in design, simple in structure, convenient to use, quick in lifting and quick and convenient to convey.

The invention provides a color-changing yarn feeding device capable of quickly replacing a yarn feeding wheel, which relates to a color-changing yarn feeding device on a circular knitter. The color-changing yarn feeding device comprises a horizontally-extended body, a fixed plate provided with a rocker mechanism and a yarn feeding wheel, wherein the fixed plate and the body are provided with connection structures which can enable the fixed plate to rotate on the body, so that the fixed plate can move away from or be close to the yarn feeding wheel; the yarn feeding wheel comprises a wheel-shaped main body, a wheel-shaped lower cover and an outer wheel; the main body and the lower cover are tightly connected into a whole, the outer wheel is in the shape of a circular ring, and the circularouter wheel is removably sheathed at the periphery of the main body and the lower cover which are tightly connected into a whole. The invention has the advantage that the rubber ring can be quite conveniently and quickly replaced, the rubber ring can be replaced by only rotating the fixed plate of the rocker mechanism by a certain angle to remove the outer wheel of the yarn feeding wheel from themain body and the lower cover which are tightly connected into a whole, and all the rubber rings of the yarn feeding wheel on one knitter can be replaced within 30 minutes, thereby raising the efficiency by more than at least ten times. The invention can be widely applied to devices of the same kind, such as non-linearity yarn feeding wheels.

The invention relates to an exhibition device. The exhibition device comprises a display mechanism which comprises a display screen for playing product information; and a display table which comprisesa first folding piece and a second folding piece which are connected in a folding mode, wherein the display screen is rotatably connected with the first folding piece, and the second folding piece isused for bearing a product; after the first folding piece and the second folding piece are completely folded, the display screen is clamped between the first folding piece and the second folding piece; when the first folding piece and the second folding piece are completely unfolded, the display screen can rotate and incline relative to the first folding piece to form a set included angle. The display screen is rotated to an inclined state relative to the first folding piece, so that the display screen displays product information at a proper angle, and the use convenience of the exhibition device is ensured; and when the display screen stops being used, the display screen is rotated so as to be clamped between the first folding piece and the second folding piece which are completely folded, and finally the carrying and storing convenience of the folded exhibition device is improved.