39results about How to "Solve the stress" patented technology

The invention relates to a log collection system, a log collection method and a log recycling server. The log collection system comprises acceleration servers, log recycling servers and a center server, wherein the acceleration servers are used for generating log files and uploading the log files to the log recycling server; the log recycling servers are used for receiving the log files uploaded by the plurality of acceleration servers and uploading the received log files to the center server; the center server is used for receiving log files uploaded by the plurality of log recycling servers; and the number of the log recycling servers is smaller than that of the acceleration servers. The log collection system, the log collection method and the log recycling server can effectively reduce the pressure of the center server and the network overhead, and improve transmission efficiency.

The invention discloses an LLC resonant converter and a control method, and the LLC resonant converter is lower in design difficulty, and comprises an inverter circuit, an LLC resonant cavity, a transformer and a rectification network which are sequentially connected from the input to the output. The LLC resonant cavity comprises a resonant inductor Lr, an excitation inductor Lm and a resonant capacitor Cr, and is additionally provided with a two-way switch; the resonant inductor Lr and the resonant capacitor Cr are connected in series between the first output end of the inverter circuit and the first end of the primary side coil of the transformer. The second output end of the inverter circuit is connected with the second end of the primary side coil of the transformer, the excitation inductor Lm is connected with the primary side coil of the transformer in parallel, the first end of the two-way switch is connected with the first end of the primary side coil of the transformer by being connected between the resonance inductor Lr and the resonance capacitor Cr, and the second end of the two-way switch is connected with the second end of the primary side coil of the transformer; theresonant inductor Lr is connected between the first end of the two-way switch and the first end of the primary side coil of the transformer, and the resonant capacitor Cr is connected between the first end of the two-way switch and the first output end of the inverter circuit.

The invention relates to a magnetic valve, comprising a valve seat, a sleeve fixedly connected with the valve seat, a coil arranged outside of the sleeve, a movable core arranged in the sleeve, a static core and a reset spring arranged between the movable core and the static core, wherein a sealing element is arranged at one end of the movable core opposite to the other end close to the static core, and a valve port is arranged at the side opposite to the sealing element in a valve body; and the sealing element comprises a major diameter part in the central cavity body at the end part of the movable core, a middle part and a minor diameter part which partially extends out of the central cavity body at the end part of the movable core. The magnetic valve also is provided with a balance channel passing through the sealing element, so that no pressure difference generates at the two sides of the sealing element, thus avoiding instable magnetic valve flow due to action of the sealing element resulted from the pressure difference, and solving the problem of larger stress of the sealing element, thereby reducing abrasion of the sealing element.

The invention relates to a half-through bowstring arch bridge with a vehicle and a light rail on the same layer. A main beam of the arch bridge adopts a mixed structure; a side span main beam adopts a prestressed concrete structure; and a mid-span main beam adopts a steel box girder structure. The arch bridge is characterized by having a combined arch force transfer system; and the force transfer system comprises a lifting basket type steel box main arch and a back stay rope. As a novel structural design of a bridge building is adopted, the same-layer arrangement of improving the linear technology standard and reducing the manufacturing cost is realized, and the beauty and structure unification of the bridge building is realized.

The invention discloses a furnace top distributing gear for distributing materials on the top of an iron-fining furnace, belonging to the technical field of mechanical engineering. A rotating motor and a tilting motor are independently driven by a set of differential mechanisms, wherein differential mechanism drive and previous-stage drive adopt all-gear drive, the previous-stage drive of a central sun wheel of the differential mechanism adopts gear drive with common drive ratio, and a furnace pot is tilted by a three-ring speed reducer. The furnace top distributing gear can realize the functions of furnace pot tilting, furnace pot rotation and furnace pot tilting and rotation, has the advantages of compact structure, reliable drive, stable work, high drive efficiency, long service life, little maintaining workload and convenient furnace pot replacement, can be used for blast furnace engineering of various types or other places where loose unpacked materials are delivered.

The invention discloses an unmanned aerial vehicle automatic patrolling method for a direct current single-circuit tension tower. The method comprises the steps that S1, key patrolling points of the direct current single-circuit tension tower are determined; S2, shooting key points and flight path key points in the patrolling process are selected, and a patrolling flight route is set; S3, manual patrolling is conducted according to the set patrolling flight route, and in the patrolling process, coordinates of the flight path key points, coordinates of the shooting key points and angles of thehead of an unmanned aerial vehicle and a cloud deck at the shooting key points are collected; S4, according to the data collected in the manual patrolling process, an automatic flight task and an automatic shooting task of the unmanned aerial vehicle are generated; S5, the generated patrolling tasks are uploaded to the unmanned aerial vehicle, the unmanned aerial vehicle is controlled to automatically fly completely according to the tasks, when the unmanned aerial vehicle arrives at the shooting key points, the flight direction of the head of the unmanned aerial vehicle and the angle of the cloud deck are automatically adjusted, after in-place adjustment, a camera is trigged to shoot, and the unmanned aerial vehicle returns to the taking off point until all the tasks are completed. The method effectively solves the problems that manual patrolling for the direct current single-circuit tension tower is large in stress, low in safety and not high in efficiency.

Disclosed is a foot positioning device comprising an arched wide band with anti-skidding and anti-falling functions. The invention relates to the foot positioning device comprising the arched wide band with anti-skidding and anti-falling functions. The invention provides the foot positioning device comprising the arched wide band with anti-skidding and anti-falling functions. The foot positioning device comprises a fixing part 1, a fixing part 2 and the arched wide band 3 and is characterized in that one end of the arched wide band 3 is connected with the fixing part 1; and the other end of the arched wide band 3 is connected with the fixing part 2. The foot positioning device comprising the arched wide band with anti-skidding and anti-falling functions has following beneficial effects: the foot positioning device is low in manufacture cost and convenient in installation and has the anti-skidding and anti-falling functions; a safe-positioning and protecting device is provided for feet of a passenger in order to prevent feet of the passenger from moving forwards or falling down backwards under inertia effect so that the effect of maintaining body balance is achieved; the standing passenger is prevented from falling down so that an accident is avoided; and the foot positioning device comprising the arched wide band with anti-skidding and anti-falling functions is suitable for safety protection facilities for buses, subways, steamships and other vehicles.

The invention relates to a flat plate type heat-insulation and energy-saving pipe carrier, which comprises a base (2) and a heat insulation layer (3), wherein the base (2) is used for supporting a pipeline (1), the heat insulation layer (3) coats the surface of the pipeline, and the pipeline is supported on a foundation through the base (2). The flat plate type double-heat insulation and energy-saving pipe carrier is characterized in that the base (2) mainly consists of an upper bottom plate (201), a box type lower bottom plate (202), an integral type heat insulation block (203), a rib plate (204) and a pressing plate (205), wherein the upper bottom plate (201) is cast in the integral type heat insulation block (203), the integral type heat insulation block (203) is arranged on the box type lower bottom plate (202), the upper bottom plate (201) and the box type lower bottom plate (202) are fixedly connected in a heat insulation way through the pressing plate (205) and a pressing bolt (206) at the two ends, the lower end of the rib plate (204) penetrates through the integral type heat insulation block (203) and is welded on the upper bottom plate (201), and the upper end of the rib plate (204) penetrates through the heat insulation layer (3) and is welded with the pipeline (1). The flat plate type heat-insulation and energy-saving pipe carrier has the advantages that the heat insulation effect is good, and the structure is simple.

The invention discloses a motor rotating shaft with spoke iron plates, which solves the technical problems that the stress of the cross sections of spoke iron plates perpendicular to a shaft is large, and the shaft is easy to break in an existing motor rotating shaft with spoke iron plates. The motor rotating shaft comprises a shaft (1), the wide spoke iron plate, the narrow spoke iron plate and a fan-shaped air blocking plate (4), both the wide spoke iron plate (2) and the narrow spoke iron plate (3) are fixedly arranged on the shaft (1) along the direction of the shaft (1) and are evenly and equidistantly spaced, and a cylindrical unloading through hole (6) and an unloading groove (7) are symmetrically arranged on each of the wide spoke iron plate and the narrow spoke iron plate. The motor rotating shaft has the advantages of simple structure, low cost and convenience in processing and installation.

The invention relates to a polyphenylene sulfide (PPS) resin composition and application thereof. The polyphenylene sulfide resin composition comprises the following components by mass percentage: 20-65% of PPS resin, 20-60% of glass fiber, 0.1-3% of a dispersing agent, 0.5-10% of a stress releasing agent, 0.3-2.0% of an antioxidant, 0.5-3.0% of a lubricating agent and 0.5-10% of a filling agent.According to the invention, the stress releasing agent is added into a PPS-glass fiber composition system, so that partial crystallization regularity of PPS is destroyed, also the free space volume among PPS molecules is also increased, and timely release of thermal stress and mechanical stress generated in the material processing process is facilitated; furthermore, all the components of the resin composition are compounded according to a specific proportion, so that the problem of large internal stress of the glass fiber reinforced PPS engineering plastic is effectively solved, the stabilityof an electroplated circuit is improved, and meanwhile, good mechanical properties, dielectric properties and processability are maintained.

The invention discloses a pipe jacking sleeve built-in pipeline dragging structure. The structure involves a sleeve and a built-in pipe, wherein a plurality of bracket mounting plates are arranged atintervals in the sleeve in the length direction, a bracket is arranged on each bracket mounting plate, a sliding wheel device is arranged on each bracket, the built-in pipe is supported on the brackets, the built-in pipe can slide on the surfaces of the brackets, the bracket mounting plates are fixedly connected with the sleeve, and the bracket mounting plates are fixedly connected with the brackets. The technical problems that in the prior art, in the dragging process, the built-in pipe is damaged and a joint is prone to break are solved.

The invention relates to the technical field of ultraviolet light emitting diode chips, and particularly relates to an epitaxial structure of a UVB chip and the UVB chip. The lattice strain layer is arranged between the Alx1Iny1Ga1-x1-y1N quantum barrier layer with the high Al component and the Alx2Iny2Ga1-x2-y2N quantum well layer with the low Al component to play a role in connection and transition, and the problem of a large stress caused by a large lattice constant difference is efficiently solved; and meanwhile, the Al content in the lattice strain layer is between x1 and x2 so that the problem of high defect density caused by sudden and too fast migration of Ga is avoided, and the luminous efficiency is further improved.

The invention discloses an auxiliary power supply circuit of a wide-input-range power supply module. The auxiliary power supply circuit comprises a primary auxiliary power supply circuit and a secondary auxiliary power supply circuit, wherein the primary auxiliary power supply circuit and the secondary auxiliary power supply circuit adopt a forward and reverse excitation power supply mode, the primary auxiliary power supply circuit comprises an auxiliary winding T1D, the auxiliary winding T1D is wound by adopting a single winding, the secondary auxiliary power supply circuit comprises an auxiliary winding T1B and an auxiliary winding T1C, the auxiliary winding T1B and the auxiliary winding T1C are wound by adopting a mode of superposing a forward excitation winding and a flyback winding, the auxiliary winding T1B adopts a half turn, and the auxiliary winding T1C is an integral turn; the method can meet the power supply demand for the integrated circuit when full-range input is performed and is small in stress of the device when a high-end voltage input is performed.

The invention discloses a hollow lead-free plastic flat package, belonging to the technical field of semiconductor packages. The hollow lead-free plastic flat package comprises a carrier, wherein a chip is fixed on the carrier, pins are uniformly distributed around the carrier, plastic package bodies are filled among the pins as well as between the pins and the carrier, the pins and chip are connected by bonding lines, a cover plate is arranged above the chip, the periphery of the cover plate is supported by the plastic package bodies, and a cavity is formed among the cover plate, the carrier and the plastic package bodies. The hollow lead-free plastic flat package solves the problem that an MEMS (Micro Electro Mechanical System) chip with an exposed movable structure and a photoelectric semiconductor chip are incapable of being subjected to plastic package and reduces the packaging stress.

The invention provides a turbocharger heat insulation cover. A body of the heat insulation cover is an annular cover cap with one end provided with a heat insulation plate and the other end providedwith an opening, the center part on the heat insulation plate is provided with a center through hole, the opening end is provided with a circle of outwards flanged folding edge, the end plane of the folding edge is vertical to the axis line of the center through hole, the edge of the folding edge is provided with a plurality of elastic tongue plates projected out of the end plane of the folding edge, the elastic tongue plates are uniformly arranged on the edge of the folding edge, the inner side of each elastic tongue plate is provided with a stripped arc-shaped heat insulation belt, and a compression surface parallel to the end plane of the folding edge is formed at the top ends of the elastic tongue plates through folding and bending.

The invention relates to a steel wire balancer and a special trolley provided with a lifting arm support. The steel wire balancer is used for balancing the length difference of steel wires wound on mast pulley blocks positioned on a left side and a right side, and the steel wire balancer comprises a support frame and a balance wheel, wherein the bottom of the support frame is fixed; the central hole of the balance wheel is connected to the support frame through a shaft; the axial line direction of the balance wheel is perpendicular to the mast pulley blocks; the side wall of the balance wheel is provided with an inner groove in a circle; and one end of one steel wire is fixed on a winding drum with variable amplitude winding, and the other end of the steel wire is wound on the mast pulley block positioned on one of the left side and the right side, then wound in the inner groove positioned on the lower middle part of the balance wheel and then wound on the mast pulley block positioned on the other one of the left side and the right side to be fixed on the winding drum with variable amplitude winding. The steel wire balancer disclosed by the invention has the advantages of small occupied space and limitless regulating quantity.

The invention discloses a high-altitude fire extinguisher with a puncture function. The high-altitude fire extinguisher with the puncture function comprise a puncture system, a waterway system, a firemonitor, a rotary table and a boom system, wherein the boom system is fixed onto the rotary table, rotates along with the rotary table, and comprises a telescopic arm I and a telescopic arm II; the telescopic arm II extends and retracts relative to the telescopic arm I; the puncture system and the fire monitor are fixed to two sides of the front end of the telescopic arm II; the puncture system is fixedly connected with the telescopic arm II through a swing motor; and a reversing ball valve is arranged at the front end of the waterway system, and is provided with three channels connected witha water pipe of the waterway system, the puncture system and the fire monitor. According to the high-altitude fire extinguisher with the puncture function provided by the invention, the puncture system and the fire monitor are operated independently and controlled independently so as to be flexibly and conveniently operated, so that the fire extinguishing efficiency and a fire extinguishing effect in a cabin can be improved.

The embodiment of the invention provides a soaking cover which is used for heating and preserving heat of molten glass flowing on a forming template, the soaking cover comprises a circular ring heater, a hanging bucket and a temperature control system, the hanging bucket is hung above the forming template, and the lower surface of the hanging bucket is parallel to the forming template, so that the surface of the molten glass is vertically heated; during vertical heating, heat is in a vertical plane downward radiation state, so that molten glass on the forming template can be radiated, and meanwhile, the heat of the molten glass can be prevented from being radiated upwards and excessively lost; the circular ring heater is arranged on the lower surface of the hanging barrel, and a plurality of annular heating areas are sequentially formed on the circular ring heater from the center to the edge of the circular ring heater; the temperature control system comprises a plurality of temperature controllers, each temperature controller is connected with one corresponding heating area so as to control the temperature of the corresponding heating area, and each temperature controller controls the corresponding heating area to keep the same temperature according to the temperature field requirement, so that the temperature field uniformity in the ultra-low expansion glass ceramic forming process is ensured.