40results about How to "Reduced risk of crushing" patented technology

The invention discloses a shuttlecock which comprises a fur planting device, the fur planting device further comprises a connecting piece, a group of fur planting rods and a connecting rib, the fur planting rods are the same with fur in number, the fur planting rods are extended outwards in an annularly-radial shape from the connecting piece, the fur planting rods are connected in parallel through the connecting rib, and the connecting piece and the connecting rib are manufactured integrally. A manufacturing method of the shuttlecock comprises the following steps: (a) preparing a group of fur; (b) inserting the fur into the connecting devices; and (c) connecting the connecting devices with a ball head, wherein the sequences of the step (b) and the step (c) can be exchanged.

The invention relates to a greenhouse with adjustable height and gradient, which comprises a plurality of rows of main uprights and longitudinal beams, wherein the main uprights are arranged on the ground; the longitudinal beams are supported by the corresponding rows of main uprights; both sides of the longitudinal beams are provided with greenhouse top surfaces; the base sides of the greenhouse top surfaces are connected to the corresponding longitudinal beams and can rotate around the corresponding longitudinal beams; greenhouse top surface fulcrum bars are arranged between the greenhouse top surfaces and the main uprights; the upper ends of the greenhouse top surface fulcrum bars are hinged on the greenhouse top surfaces; the bar parts of the greenhouse top surface fulcrum bars are inserted on the main uprights; the width W of each greenhouse top surface and the height h of each main upright have the following relation that W=0.7-1.2h; and the transverse distance H between each two adjacent rows of main uprights is less than the sum 2W of the widths of two greenhouse top surfaces, so that the adjacent greenhouse top surfaces can be overlapped. The greenhouse is used as a multi-span greenhouse or a single greenhouse and can give consideration to the requirements on ventilation, rain prevention, sun protection, heat preservation and the like; moreover, when the greenhouse is not required, the greenhouse top surfaces can be turned over downwards, so that the ground is in a semi-open state; and the greenhouse is convenient for mechanical operation and is very convenient to use.

The invention discloses a connecting device of a shuttlecock, which connects the feathers of the shuttlecock and the ball head of the shuttlecock, and comprises a hair planting device, which further comprises a connecting piece and a group of hair planting rods with the same number of feathers , wherein, the hair-planting rod is extended outwardly from the connecting piece, and the connecting piece and the hair-planting rod are integrally made.

The invention discloses a multi-layer guide rail type multifunctional composite trash rack, which comprises a guide rail main body, a trash rack, a bar direction controller, a screen frame, and a cleaning mechanism. Wherein, the main body of the guide rail is located at the front side of the water inlet of the water turbine and its end wall is fixed to the side wall of the water inlet of the water turbine. Cleaning tank, wherein the screen frame slot is used to set the screen frame, and the trash rack slot is used to set the pollution cleaning mechanism; the invention has the functions of silting up the water inlet, grading and blocking dirt according to the size and direction of the dirt, The trash rack is easy to clean, can remove floating objects on the water surface above the trash rack, can prevent dirt from entering the turbine when the trash rack is replaced, and can prevent fish from entering the turbine, etc. It has strong practicability and multiple functions, and can solve many thorny problems faced by current hydropower stations. It can be applied to hydropower stations that have been built or are under construction.