38results about How to "Little energy loss" patented technology

The present invention comprises a plurality of planet balls (40) sandwiched between first and second rotating members (10, 20) on a shaft (50); an iris plate (80) and a worm gear (81) spinning each of the planet balls (40) at a slope; a sun roller (30) comprising a first sun roller (31) which includes a first cylindrical portion (31a) that has a first contact point (P1) with the planet ball (40) and a second cylindrical portion (31b) that has a smaller outer diameter than the first cylindrical portion (31a) to be capable of relative rotation with the shaft (50), the sun roller (30) also comprising a second sun roller (32) which includes a second contact point (P2) with the planet ball (40) to be capable of relative rotation with the first sun roller (31) on an outer circumferential surface of the second cylindrical portion (31b); and a thrust bearing (TB) disposed between the first sun roller (31) and the second sun roller (32) to receive a thrust load in a shaft line direction transmitted from the planet ball (40) to the first sun roller (31) and the second sun roller (32).

The invention relates to the field of pipeline nondestructive testing, in particular to a pipeline bore damage state diagnosis method. An ultrasonic electromagnetic ultrasonic excitation end sends a signal to the inner bore of a detected pipeline, and an ultrasonic electromagnetic ultrasonic receiving end obtains a reflection signal. A waveform database is established, wherein the waveform database comprises a non-damage waveform and a damage waveform of the pipeline. The waveform corresponding to the reflection signal is compared with the waveform in the waveform database, and if the waveformcorresponding to the reflection signal is matched with the damage waveform, determining that the detected pipeline is an inner bore damaged pipeline. The damage location is obtained by time and speedof signal propagation, and the damage size of the inner bore damage pipeline is obtained according to the amplitude of the damage reflection signal. The diagnosis method is suitable for defect detection and recognition of complex structures of the inner walls of various thick-wall pipelines, internal defects and damage positions of the thick-wall pipelines are detected, the hidden defects of thethick-wall pipelines can be detected in time so as to facilitate maintenance and guarantee, and the system operation and maintenance cost can be effectively reduced.

The invention discloses a carbon dioxide refrigerator refrigeration system. The carbon dioxide refrigerator refrigeration system comprises an integral expansion-compression machine; an exhaust port of a second-grade cylinder of a compressor is connected with an inlet of a gas cooler; an intake port of a first-grade cylinder of the compressor is connected with an outlet of an evaporator; and a refrigerant compressed by the first-grade cylinder of the compressor is discharged into a compressor shell, and enters the second-grade cylinder of the compressor by an air sucking channel of the second-grade cylinder of the compressor. An inlet of an expander is connected with an outlet of the gas cooler; a refrigerant in an outlet of the expander is divided into two ways; most refrigerant passes through one of three sets of electromagnetic valve and capillary pipe combinations; and the other part of few refrigerant passes through a hand valve and an electronic expansion valve to connect with a nozzle formed in the second-grade cylinder of the compressor. The carbon dioxide refrigerator refrigeration system can improve the refrigeration performance by adopting the modes of the integral expansion-compression machine, two grades of compression of middle spraying liquid for cooling and three sets of capillary pipes with different sizes.

The invention discloses a high-sensitivity piezoelectric ceramic material, and a preparation method and application thereof. The piezoelectric ceramic material comprises a core component and an additional component, wherein the core component comprises 65.07%-67.73% of Pb3O4, 2.213%-2.3% of SrCO3, 0.291%-0.303% of Sb2O3, 1.328%-1.382% of Nb2O5, 0.165%-0.172% of Ni2O3, 0.08%-0.083% of Fe2O3, 11.51%-11.983% of TiO2 and 17.35%-18.06% of ZrO2 based on the weight percentage; and on the basis of the sum of the core component by weight, the additional component, comprising 0.03-0.1% of SiO2 and 0.2-0.5% of CeO2, is added. Besides, the invention also provides a preparation method and application of the piezoelectric ceramic material. The invention has the advantages of great signal bandwidth, high amplitude, favorable sensitivity and stable long-time operation performance, and can effectively satisfy the special requirements of the electronic complete machine with special requirements for the piezoelectric ceramic sensor.

The invention provides a RV reducer with large reduction ratio. The RV reducer with the large reduction ratio is characterized in that the RV reducer includes pin wheel housings, cycloidal wheels, angular contact ball bearings, output plate racks, planet wheels, eccentric shafts, input shafts, and adjusting gears; the input shafts are located in the center position of the RV reducer, a gear structure is arranged at the tail ends of the input shafts; the planet wheels and the eccentric shafts are at least two sets and surround the input shafts in symmetrical distribution; the planet wheels andthe gear structures of the tail ends of the input shafts are meshed through at least two sets of adjusting gears; the output plate racks sleeve the exteriors of the eccentric shafts and the cycloidalwheel; the pin wheel housings sleeve the exteriors of the output plate racks; and the pin wheel housing sleeves are connected with the output plate racks through a pair of angular contact ball bearings. The RV reducer with the large reduction ratio has a three-stage reduction structure, large reduction ratio, a small starting torque, high starting efficiency, small vibration, a low noise, better smoothness, and high precision.

The present invention discloses one kind of no-deceleration obstacle crossing mechanism with small control force and two-stage lever triggering. The no-deceleration obstacle crossing mechanism consists of one chassis carriage, one transmission mechanism, one two-stage lever triggering mechanism and one driven wheel raising mechanism. The chassis carriage includes driving motor with swinging strut mounted on its driving shaft; the transmission mechanism includes conveying belt, driving wheel and driven wheel, with the conveying belt being installed between the driving wheel and the driven wheel; the two-stage lever triggering mechanism consists of two levers; and the driven wheel raising mechanism includes tension spring. The no-deceleration obstacle crossing mechanism is proved to have stable running, high speed and high use effect, and may be used in robot, transportation means, etc.

The invention discloses a clutch device used for a transmission system of a vehicle. The clutch device comprises an input side connected with a driving motor; a first output side and a second output side, which are respectively used for connection with an input shaft of a transmission. The clutch device comprises a torque converter connected between the input side and the first output side. The coupling of the torque converter is adjusted, and then the improving of the positive or negative rotating speed of the input side with respect to the first output side can be adjusted.

The invention discloses a biosensor based on a dielectric nano-antenna, which includes a substrate and a dielectric material arranged in a periodic array on the substrate, and the dielectric material is selected from silicon, germanium, tellurium and lead-containing compounds of the four and six groups. one or more. The invention has relatively low intrinsic loss, exhibits invariance in response to wide-ranging angle changes for certain structures such as cube arrays, has good compatibility, low loss, and can realize resonance with a high quality factor, thereby improving sensing sensitivity. The low loss feature can enhance the local field while avoiding the destruction of the molecules to be tested due to the strong photothermal effect. Moreover, the control of the radiation direction can be realized by adjusting the electrical resonance and magnetic resonance coupling of the designed structure, which is conducive to improving the collection efficiency and thus the sensing sensitivity. Dielectric nano-lightwave antennas have become a major tool for manipulating light at the nanoscale, enabling the regulation of far-field radiation.

The invention relates to a charging bow and a charging device. The charging bow comprises charging bow brackets and pole plates, wherein the charging bow brackets and the pole plates are arranged at intervals, and an elastic buffer piece for providing separation force for each charging bow bracket and each pole plate is arranged between each charging bow bracket and each pole plate. The charging bow also comprises anti-falling connecting pieces used for connecting the charging bow brackets with the pole plates and tightly pressing the elastic buffer pieces between the charging bow brackets andthe pole plates; each charging bow bracket and / or pole plate is provided with penetration holes used for enabling each anti-falling connecting piece to penetrate; and at least one penetration hole and each anti-falling connecting piece have a certain floating gap in a front and back and / or left and right direction to enable each anti-falling connecting piece to swing in the front and back and / or left and right direction. When the charging bow disclosed by the invention is used for charging an aslant-parking vehicle, the pole plate can realize total contact with a vehicle current collectiondevice through swinging in the front and back and / or left and right direction as well as vertical floatation, and therefore, the problem in the prior art that the charging bow and the current collection device of the aslant-parking vehicle can not be in the total contact can be solved.

A radial-flow turbine containing cylinder, stator and rotor installed in cylinder, featuring a complete steam flow path, steam admission pipe, steam admission chamber, at least two or plurality of endiocentric energy converting flow path groups, at least one steam flow reversible flow path group and exhausting chamber, wherein the number of steam flow reversible flow path group is one less then that of endiocentric energy converting flow path groups, all endiocentric energy converting flow path groups and steam flow reversible flow path group are alternately arranged along axial direction of rotor, plurality of convergent nozzles are set at the outlet of steam admission chamber and end of flow reversible flow path groups, comparing with current technology. Said invention has advantages of high energy conversion efficiency and fine anti overspeed, anti vibration and shock resistance performance.

The invention provides a building sunshade umbrella, which comprises at least one sunshade umbrella unit, a plurality of umbrella surface units, a movable umbrella support skeleton and a driver, wherein the sunshade umbrella unit comprises a fixed support skeleton; each umbrella surface unit comprises a framework and an umbrella surface film fixed on the framework; a plurality of umbrella surfaceunits are split into a sunshade umbrella surface around a center point; adjacent umbrella surface units are hinged and connected through hinges; the movable umbrella support skeleton comprises a plurality of movable umbrella support rods; the end part of the movable umbrella skeleton far away from the center point is arranged on an umbrella surface chute arranged on the fixed support skeleton; the driver comprises a top rod and a driving mechanism connected with the top rod; the top rod is positioned on the center point, and is hinged with each movable umbrella support rod, and the driving mechanism drives the top rod to move so that the split umbrella surface can be unfolded or folded. The building sunshade umbrella of the invention can be unfolded and folded, has the effects of both sunshade and lighting, has stable and firm structure, and is suitable for being arranged on external walls of middle and high buildings.