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 relates to the field of building decoration, in particular to a decorative moulding, a closing component and a decorative moulding assembly formed by the decorative moulding and the closing component. The decorative moulding comprises at least one panel. At least two first reinforcing ribs are arranged at one side of each panel. Buckles are arranged on the opposite face of every two adjacent first reinforcing ribs. The closing component comprises a closing component body which is a panel with the hollow center. At least two locking arms are arranged at one side of the closing component body oppositely. The distance between every two locking arms corresponds to the distance between every two adjacent first reinforcing ribs. A buckle head is arranged at one end, away from the closing component body, of each locking arm. The buckle heads and the buckles are mutually matched and locked closely. In this way, it can be ensured that terminals such as a circuit inserting board and a switch can be installed on the decorative moulding fast. Attractiveness of the decorative moulding can be ensured to the maximum, and the decorative moulding can be connected or disassembled fast.

The invention provides an environment-resistant electric connector shell made of a titanium alloy and a manufacturing method thereof, which relates to an electric connector shell and the manufacturingmethod thereof and solves the problem that the existing electric connector shell can not be applied to harsh environment. The electric connector shell is made of titanium alloy material which contains 87.5 to 99.8 wt% of titanium, and one or a plurality of combinations of Ni, Pd, Ta, Mo, Ru, Zr, V and Sn as balance. The electric connector shell can be manufactured by adopting a powder metallurgymethod, and titanium and other elemental metal powders are mixed and then are added to a mould; powder blank is prepared by pressurization, and then pressure sintering or non-pressurized sintering iscarried out by adopting a vacuum sintering furnace; finally, finish machining is carried out according to the shape of the electric connector shell. The electric connector shell can also be manufactured by a precision investment casting method, and the titanium alloy is smelted and cast on a centrifugal titanium casting machine; subsequently, sandblasting and hot isostatic pressing treatment are carried out on a casting, and then the finish machining is carried out according to the shape of the electric connector shell so as to obtain the electric connector shell which is made of titanium alloy and is qualified.

The invention provides a steam curing system for a high tower. The steam curing system for the high tower comprises a heat supply module and a heat preservation module, wherein the heat supply module comprises a steam generation unit and a steam conveying unit connected with the steam generation unit, and the steam conveying unit comprises a main pipeline extending to a high position from a low position, a branched pipeline which intersects and communicates with the main pipeline, and a steam outlet pipeline which intersects and communicates with the branched pipeline; and the heat preservation module is composed of a plurality of cloth-shaped heat preservation units and used for covering the area through which the branched pipeline passes. Through the scheme, construction of tower columns in winter or under low-temperature conditions can be achieved.

The invention provides a bullet train framework of a light rail vehicle. The bullet train framework of the light rail vehicle comprises side beams and a cross beam, wherein the cross beam is of a boxtype beam structure, and the cross beam comprises a first cross beam and a second cross beam which are arranged at intervals; the first cross beam and the second cross beam are formed by installing and welding cross beam upper cover plates, cross beam lower cover plates, cross beam inner vertical plates and cross beam outer vertical plates correspondingly; a plurality of mounting bases are arranged on the first cross beam and the second cross beam correspondingly, the plurality of mounting bases are integrated with the first cross beam or the second cross beam through a structure of butt jointof at least one surface and hinged connection of multiple surfaces, and the positions of the plurality of mounting bases on the first cross beam and the positions of the mounting bases on the secondcross beam are rotationally symmetric about the central axis of a transverse framework; and the middle parts of the side beams are flush with the upper plane and the lower plane of the cross beam. Compared with the prior art, the bullet train framework of the light rail vehicle can ensure that the design strength meets the use requirements, and meanwhile, also has good manufacturability and good quality measuring degree.

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 provides an electronic device, an antenna and a method for forming the antenna. The electronic device comprises a shell, a signal transceiver and the antenna, wherein the shell comprises a conductor zone manufactured by a conducting material; the antenna comprises an irradiation part and a coupling and matching part; the irradiation part is formed by utilizing the conductor zone and is used for irradiating and receiving signals; the coupling and matching part is coupled to the irradiation part, is connected to the signal transceiver and is used for feeding signals between the irradiation part and the signal transceiver and exciting the irradiation part to irradiate and receive the signals in specified frequency bandwidth. In each technical scheme of the embodiment, the antenna has a good antenna performance while the appearance design and the structure strength of the electronic device are ensured.

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.