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6366results about How to "No noise" patented technology

Test machine and test method for real-time and dynamic observation of end surface torsion friction and abrasion of friction interface

The invention discloses a test machine and a test method for real-time and dynamic observation of end surface torsion friction and abrasion of a friction interface. The test machine comprises a pressure applying device, a rotary platform, a friction interface observing device and an adjusting device, wherein the pressure applying device comprises a lever, a lever bracket and weights, the rotary platform comprises a motor, a shaft encoder and a worm and gear transmission mechanism, the friction interface observing device comprises a high-speed camera, a torque sensor and a pressure sensor, and the adjusting device comprises a level and a vertical adjustable rod element. The axial loading is applied to a lower specimen by the lever and the weights, the rotary platform drives an upper specimen to do reciprocating torsion, the high-speed microscopic camera is used for observing the friction interface, the torsion friction and abrasion tests under different external loads are simulated by the adding and reducing of the weights, the change of the torsion frequency and the like, then the friction coefficient, the abrasion shape and the abrasion chip real-time movement in the friction process are obtained, and the friction and abrasion performances of transparent material in the whole process are evaluated. The test machine has the advantages that the structure is simple, the operation is convenient, and the repetitiveness is high.
Owner:CHINA UNIV OF MINING & TECH

Drifting sand layer and gravel stratum water-moving double-liquid high pressure slip-casting water-blocking construction method

The present invention discloses a running sand layer and sandy gravel layer dynamic-water double-liquid high-pressure slurry-injecting water-shutoff construction method which comprises the following construction steps: drilling a hole, flushing the hole, executing double-liquid high-pressure slurry-injecting operation and sealing the hole. The running sand layer and sandy gravel layer slurry-injecting liquid adopts an ordinary portland cement (P.O.42.5) and 40''Be sodium silicate as material for preparing the slurry, according to the weight proportion of water: cement, namely the cement slurry is prepared with the water cement ratio for 0.5-1.2:1. Then the slurry-injecting liquid is prepared with the volume ratio of cement slurry: sodium silicate for 1:0.08-0.15. The sodium silicate is taken as additive for regulating the initial setting time of the slurry-injecting liquid. The cement slurry can also be doped with fly-ash with cement consumption (weight proportion) for 10%-15%. The invention executes water-insulating construction aiming at the characteristics of large pressure of the underground dynamic water and high flowing velocity in the running sand layer and sandy gravel layer, and can obtain the maximal application sphere and optimum water-shutoff effect.
Owner:HUNAN CONSTR ENG GRP COR

Heatsink for electronic component

A heatsink for dissipating heat from a heat-generating source such as an electronic component includes heatsink plates, wherein the individual heatsink plates are bound together at a binding portion to form a heat-absorbing portion for contacting a heat-dissipating surface of the electronic component, and portions of the heatsink plates opposite the heat-absorbing surface are separated from each other to collectively act as a heat-dissipating portion binding the heatsink plates together. To provide the separation between heat-dissipating portions of the heatsink plates, the heatsink includes spacers interposed between the binding portions of neighboring heatsink plates or the heatsink plates are spread out apart from each other by being bent at angles. The heatsink plates include fins spaced apart from each other at an interval. The binding element is preferably a rivet. In manufacturing the heatsink, a protrusion is formed at the individual heatsink plates such that the heat dissipating portion of the heatsink is unfolded outward at a angle by the protrusion. The heatsink can transfer the heat generated from a heat-generating source into the surrounding air, without power consumption and without generation of noise and vibrations, and such a heatsink can easily be manufactured.
Owner:ZALMAN TECH CO LTD

Spring actuating mechanism of vacuum circuit-breaker

The invention relates to a spring actuating mechanism of a vacuum circuit-breaker, which comprises a frame, and is characterized in that an energy storage component is arranged on the middle part of the frame; a handle closing connecting rod component is arranged on the left side of the middle upper part of the frame; a hand opening connecting rod component is arranged on the right side of the middle upper part of the frame; a hand energy storage component is arranged on the middle lower part of the frame; an electric energy component is arranged on the lower part of the frame; and an electromagnet component is arranged on the upper part of the frame. The spring actuating mechanism has the advantages that the inner space of the actuating mechanism is fully utilized; the assembled positionsof parts are accurate; the integration of the actuating mechanism is realized; driving parts are reduced; the driving process is simplified; the reliability and the stability of the mechanism are greatly increased; the visible adjustment of the lock joint amount can be easily realized; the closing and opening resistance failures of the circuit-breaker in the working process can be avoided; a reliable and safe interlocking device is provided; and the standard is only.
Owner:CHONGQING YIKE ELECTRIC

Multifunctional complex printer

The invention relates to a multifunctional complex printer. The multifunctional complex printer comprises a lifting device of a paper feed part. The multifunctional complex printer is characterized in that a corona device, a first AC servo tension detection device and a first cooling pull roll device are sequentially arranged at right side of a first deviation correction device, an intaglio printing unit is arranged above the corona device, the first AC servo tension detection device and the first cooling pull roll device, a first interchangeable hectograph unit, a second interchangeable hectograph unit, a third interchangeable hectograph unit, a fourth interchangeable hectograph unit, an interchangeable letterpress printing unit, an interchangeable screen printing unit and a first interchangeable flexography printing unit are sequentially arranged at the right side of the intaglio printing unit, a fourth AC servo tension detection device is arranged below a reserved platform of an inkjet device, and a second two-cylinder die cutting device, a back cutting device and a television monitoring camera are sequentially arranged at the right side of a first two-cylinder die cutting device. The multifunctional complex printer has the advantages of flexibly combining various printing modes according to pluralism of products and optionally exchanging printing modes of various color classes.
Owner:SHANGHAI XINMIN TAIYO KIKAI

Stitching type jaw single and bidirectional over running clutch

The present invention discloses a press-fitting type jaw overrunning clutch, which can be used as a single or double direction overrunning clutch or a single and double direction controllable glider, and has the characteristics of huge transmissible torque, high rotating speed, no collision, small volume, large impact resistance, simplicity and reliability, and long service life. The present invention is characterized in that the press-fitting type jaw overrunning clutch is provided with a blocking embedding mechanism preventing two embedding mechanisms of a force transmission embedding mechanism and a separation embedding mechanism from being embedded under the overrunning separating condition, the mechanism on the axial direction is positioned in the two mechanisms, and the mechanism on the radial direction is positioned in the two mechanisms, between the two mechanisms or outside the two mechanisms; a lift angle of both sides blocking the working surface is formed to enough ensure the friction self-locking collided on the both sides and the stability of the blocking operating condition, in order that the lift angle has the capabilities that the adaptive axle base is changed and the abrasion is automatically compensated; no collision characteristic of the overrunning operating condition of the two embedding mechanisms is maintained for a long time, and the separating block process and the embedding return process of the embedding mechanism are absolutely reliable. In addition, the direction control mechanism and the condition control mechanism are simple and reliable, the clutch manufacture is relatively easy, the assembly is simple, and the interchangeability of an old part and a new part is strong.
Owner:洪涛

Rural domestic sewage biological treatment system

The invention belongs to the technical field of sewage treatment, and relates to a rural domestic sewage biological treatment system, particularly a rural domestic sewage biological treatment system which has the advantages of low capital construction and operating cost, small occupied room, convenient operation and management, high sewage treatment efficiency and discharge after reaching the standard. The rural domestic sewage biological treatment system provided by the invention is connected with a rural domestic sewage discharge pipeline. The rural domestic sewage biological treatment system is characterized by comprising an ecological open septic tank, a microaeration oxidation pond, a suspended substance biological filter, an artificial wetland and a scenic pond, wherein the ecological open septic tank, microaeration oxidation pond, suspended substance biological filter, artificial wetland and scenic pond are arranged from high to low and communicated through a pipeline or ditch; the sewage flows under the gravity; and the water inlet of the ecological open septic tank is connected with the rural domestic sewage discharge pipeline. The rural domestic sewage biological treatment system provided by the invention solves the problem of large occupied area, high investment and maintenance cost and the like in other rural sewage treatment methods.
Owner:云南省科学技术情报研究院 +1

Durability test bed for automobile door

The invention provides a durability test bed for an automobile door and belongs to the field of measuring techniques. The durability test bed solves the problem that an existing test bed device can only detect the opening and closing frequency when an automobile door hinge or an automobile door lock reach a scrap state. The durability test bed for the automobile door comprises an upper computer, a force sensor, a base plate and a swing arm, wherein one end of the swing arm is hinged to the base plate provided with a cylinder capable of driving the swing arm to swing, and the other end of the swing arm is connected with a push-pull component; a cylinder piston rod is connected with the swing arm through the force sensor; the part where the swing arm and the base plate are hinged is provided with an angle sensor capable of detecting the size of swinging angle of the swing arm; the angle sensor and the force sensor are both in electric connection with the upper computer. In the durability test bed for the automobile door, the angle sensor and the force sensor are installed; test frequency, force and speed are controlled, adjusted and recorded through the upper computer and a PLC so as to be analyzed and determined by testers and designers, and meanwhile the durability test bed is capable of outputting and printing test report data.
Owner:ZHEJIANG GEELY AUTOMOBILE RES INST CO LTD +1
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