32results about How to "Guaranteed design strength" patented technology

The invention discloses an injection mold for automobile trims. The ejection mechanism of the injection mold comprises an ejection cylinder, an ejector pin fixing plate, an ejector pin base plate, a plurality of oblique ejector pins, a plurality of straight ejector pins and a plurality of accelerated ejection units, wherein each accelerated ejection unit comprises an accelerated ejector pin and adriving mechanism; the accelerated ejector pins are vertically mounted on the ejector pin fixing plate; each oblique ejector pin, each straight ejector pin and each accelerated ejector pin are arranged to simultaneously pass through the ejector pin fixing plate, a movable mold plate and a movable mole core, respectively; the top ends of each oblique ejector pin, each straight ejector pin and eachaccelerated ejector pin separately face a mold cavity; the top end of each oblique ejector pin faces a buckle on the mold cavity; one accelerated ejector pin is arranged beside each oblique ejector pin; and the driving mechanisms are mounted on the ejector pin fixing plate to drive the accelerated ejector pins to move up and down. Since a injection-molded part is ejected out through cooperation among the accelerated ejection units, the oblique ejector pins and the straight ejector pins, the design strength of the inclined ejector pins can be ensured, the smooth release of the injection-moldedpart can be ensured, the injection-molded part can be easily taken out, and production efficiency is improved.

The present invention discloses a guide rail cleaning device for an escalator or an automatic pavement, wherein the guide rail cleaning device comprises a upper clip arranged on the upper end surface of a chain sheet at two sides of a step chain, a lower clip arranged on the lower end surface of the chain sheet at two sides of the step chain, a connecting shaft connecting the upper clip and the lower clip and fixing the clips to the step chain, a cleaning head provided on the connecting shaft and located at the lower clip side and a spring provided on the connecting shaft and located between the cleaning head and the upper clip. The cleaning head is provided with a motion free degree along the axial direction of the connecting shaft and other free degree is limited. The guide rail cleaning device, which is simple in structure, convenient in installation and low in cost, can retain the original strength of the chain and is able to satisfy the requirement of cleaning guide rails of escalators or pavements in various occasions.

The invention discloses a scroll compressor with a novel exhaust port structure and an exhaust valve component. The scroll compressor comprises a shell, an air inlet pipe, an air outlet pipe, a motor, a rotor shaft component and a scroll plate component, wherein an exhaust port is formed in the scroll plate component; a groove is formed in the upper surface of the scroll plate component positioned at the periphery of the exhaust port; the groove is formed towards the bottom of the exhaust port; a valve plate which covers the exhaust port and is in a long strip type is laid in the groove; one end of the valve plate is fixedly connected with the upper surface of the scroll plate component; a limiting plate with an arc-shaped lower surface is arranged on the valve plate; and when the exhaust port starts and stops exhausting air, the other end of the valve plate swings up and down between the upper surface of the scroll plate component and the arc-shaped lower surface. According to the scroll compressor, the exhaust port structure and the exhaust valve component are optimized, and the clearance volume is reduced to the greatest degree, so that at high compression ratio, the operating efficiency of the compressor is improved, the shutdown response speed of the compressor is increased, and the manufacturing cost and the using cost are reduced.

The invention relates to a heat-insulating wall body material for a building, and discloses a riverway sludge self heat-insulating sintered porous brick and preparation thereof. The riverway sludge self heat-insulating sintered porous brick comprises the following raw materials in percentage by mass: 30 to 50 percent of riverway sludge, 20 to 40 percent of riverway sludge dry powder, 20 to 30 percent of cinder and 1 to 8 percent of microporous forming materials. The riverway sludge self heat-insulating sintered porous brick has superior self heat-insulating property, and can realize building energy conservation by more than 50 percent in the aspect of enclosure of a common building structure.