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14results about How to "Solve the force problem" patented technology
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Hydrocarbon fuel cell aero-engine
PendingCN119532057AImprove work efficiencyImprove work flexibilityJet propulsion plantsMotive system fuel cellsCombustion chamberPartial oxidation
The invention provides a hydrocarbon fuel cell aero-engine, a gas compressor and a fan in the engine are driven by a motor and can also be driven by a turbine shaft, a fuel cell system is located behind a turbine, and a partial oxidation reforming reactor, a combustion chamber, a fuel delivery pump and an exhaust nozzle are sequentially connected. Tail gas of the fuel cell system and gas which does not react completely are used for driving the turbine to rotate, the main shaft is driven to drive the gas compressor and the fan to work, electric energy generated by electrochemical reaction in the fuel cell system can also be used for driving the generator to work, and two working modes of driving the gas compressor and the fan are adopted; the problem of poor economical efficiency caused by the fact that a turbine is used for driving the gas compressor in the high altitude is solved; through the working modes of the dual-drive air compressor and the fan, the engine can be freely switched between the high altitude and the low altitude according to requirements in the using process. The advantages of cleanness and high efficiency of the fuel cell are utilized, and the problem that a traditional aero-engine is high in oil consumption rate is solved.
Owner:NORTHWESTERN POLYTECHNICAL UNIV
Support stabilizing mechanism of air volume meter
The utility model discloses a support stabilizing mechanism of an air volume meter, which relates to the technical field of support stabilizing of air volume meters and comprises a supporting foot plate, three fixing plates are fixedly connected to the outer side of the supporting foot plate at equal intervals, arc-shaped reinforcing plates are fixedly connected among the fixing plates, each arc-shaped reinforcing plate is divided into two sections, and the arc-shaped reinforcing plates are fixedly connected among the fixing plates. Universal wheels are mounted on the lower sides of one ends of the fixing plates; fixing cylinders are fixedly connected to the upper ends of the supporting foot plates; the supporting rod and the lengthened sleeve rod are connected in a sleeved mode, the height of the supporting plate can be conveniently adjusted according to the measured height, the use convenience of the support of the air volume meter is improved, and then the function of adjusting the height of the support of the air volume meter is achieved; the support stabilizing mechanism is simple in structure and convenient to buffer in the weight supporting process, the measurement efficiency of the support of the air volume meter is improved, then the function of preventing the influence of gravity factors is achieved, and finally the phenomenon that the support stabilizing mechanism of the air volume meter is stressed or broken is avoided.
Owner:苏州尚田洁净技术有限公司
Jig
A tool for mounting and dismounting a lower bushing of an epitaxial device, comprising: a main frame, a plurality of telescopic members and a plurality of linkage members; the main frame has a first support part and a second support part oppositely arranged along a first direction, and has a limiting space between the first support part and the second support part for limiting the lower bushing; the plurality of telescopic members are arranged at intervals around the second support part along the first direction, and each telescopic member can be telescoped along a different second direction, the first direction being perpendicular to the second direction; one end of each linkage member is connected with one telescopic member, and the other end is slidingly connected with the main frame; the first support part is provided with a connecting part for connecting with an external lifting device. The present application can avoid the lower bushing from shaking during the mounting process, ensure that the lower bushing in the limiting space always maintains a stable posture during the mounting process, reduce the risk of jam caused by horizontal deviation from the root, improve the mounting stability, and reduce the probability of the lower bushing being broken.
Owner:ZING SEMICON CORP
Synchronous and efficient tensioning method for prefabricated inverted arch blocks of TBM tunneling tunnel
PendingCN119593775ASolve the force problemuniform gapUnderground chambersHydro energy generationArchitectural engineeringJackscrew
Owner:HENAN POLYTECHNIC UNIV
Opposite-pulling assembly for UHPC bent cap formwork, UHPC bent cap formwork and combined bent cap
PendingCN122082351AImproves Structural IntegrityImprove economyBridge structural detailsBridge erection/assemblyClassical mechanicsStructural integrity
The invention discloses an opposite-pull assembly for a UHPC bent cap formwork, the UHPC bent cap formwork and a combined bent cap. The opposite-pull assembly comprises an opposite-pull rod and a pair of opposite-pull rod fixing pieces arranged on the tops of a pair of formwork webs correspondingly. The opposite-pull rod fixing piece comprises a pre-buried fixing plate fixedly arranged on the inner surface of a formwork web and a clamping plate fixedly arranged on the outer surface of the formwork web, and through holes allowing the opposite-pull rods to penetrate through are formed in the areas, exceeding the top of the formwork web, of the pre-buried fixing plate and the clamping plate. And the end parts of the opposite pull rods penetrate through the through holes in the pre-embedded fixing plate and the clamping plate, and are fixed through an inner fastener positioned on the inner surface of the pre-embedded fixing plate and an outer fastener positioned on the outer surface of the clamping plate. The opposite-pull rod is arranged above the top of the formwork web, the opposite-pull rod can be dismantled and reused, and the economic performance is good. And meanwhile, holes are not required to be formed in the formwork webs for mounting the opposite-pull rods, so that the structural integrity of the formwork webs is better, and the appearance is more attractive.
Owner:HUBEI PROVINCE TRANSPORTATION INVESTMENT GRP CO LTD +3
Brush bristle implanting device for toothbrush production
The utility model belongs to the technical field of toothbrush production, and particularly relates to a bristle implanting device for toothbrush production, which comprises a processing table. A supporting mechanism is arranged on the inner side of the machining table, fixing mechanisms are arranged on the two sides of the machining table, an implanting mechanism is arranged on the top side of the machining table, the supporting mechanism comprises a shell, a sliding block is installed on the inner side of the shell in a sliding mode, a directional wheel is fixed to the bottom side of the sliding block, and limiting grooves are formed in the four corners of the sliding block; limiting blocks are fixed to the two ends of the inner side of the shell, a rectangular plate is fixed to the top end of a supporting rod, a hydraulic rod is slidably installed on the inner side of a hydraulic cylinder in a matched mode through a piston, the hydraulic cylinder is controlled to push a directional wheel out of the bottom side of a machining table, the machining table is supported and moved to the machining position, and then the hydraulic cylinder is controlled to enable the hydraulic rod on the inner side of the hydraulic cylinder to extend. And the directional wheel is retracted to the inner side of the shell, the bottom side of the machining table makes contact with the ground at the moment, the contact area of the machining table and the ground is large, and the problem that an existing device is prone to deviating or toppling due to stress is solved.
Owner:GUANGZHOU WANYUAN ELECTRONICS CO LTD
A device and method for controlling the impact test of a falling weight using a combination of magnetorheological fluid and metal sheet.
ActiveCN121521598Bachieve reductionSolve the force problemStrength propertiesMagnetorheological fluidData acquisition
This application relates to the technical field of structural dynamics testing equipment, and discloses a device and method for combined control of magnetorheological fluid and metal spring sheet for drop hammer impact testing. The device includes: a test bench comprising a rigid base, a vertical support column, and a horizontal fixed beam; a drop hammer system for lifting and releasing the drop hammer body; a combined control loading system for providing stiffness support; a uniformly distributed load transfer system for receiving the impact load and converting it into a line load for transfer to the beam / column component under test; a parameter monitoring system for data acquisition; and a control system for controlling the release of the drop hammer body and adjusting the current of the excitation coil. This invention, by employing the combination of magnetorheological fluid and metal spring sheet, and utilizing the synergistic effect of the continuously adjustable damping of the magnetorheological fluid and the stiffness support of the metal spring sheet, can achieve impact pulse trimming, thereby avoiding the shortcomings of traditional airbag and rubber loading methods, such as narrow control range and low precision.
Owner:TIANJIN CHENGJIAN UNIV
Model predictive controller for eliminating transmission backlash in multi-servo drive systems of heliostats
This invention provides a model predictive controller for eliminating backlash in a heliostat multi-servo drive system, specifically for heliostat multi-servo drive systems. For speed control, an improved dead-zone model is proposed to model the backlash, and a dynamic model of the dual-motor system is established based on this model. A model predictive speed controller and control system based on the dead-zone model are designed according to the dynamic model, and a feedback correction loop is used to correct the prediction results. For position control, an improved backlash elimination strategy using a variable offset torque distribution method is proposed, and a dual-motor system model based on the backlash elimination strategy is established. A model predictive position controller and control system based on the backlash elimination strategy are designed based on this model. The controller of this invention can eliminate the influence of backlash in the heliostat multi-servo system, achieving fast and stable speed regulation without overshoot and fast response and high positioning accuracy in position control.
Owner:HUAZHONG UNIV OF SCI & TECH
A ring type air-core reactor support structure
ActiveCN120545051BSolve the force problemSolve air convection problemsTransformers/reacts mounting/support/suspensionTransformers/inductances coolingTop capPhysics
The application provides a ring type hollow electric reactor support structure, which comprises a hollow top cover, a lower bracket and a fixing base. The pie type coil section is arranged between the hollow top cover and the lower bracket, and the lower bracket is detachably connected with the fixing base. The hollow top cover is provided with first installation slots which are in a radial distribution and penetrate through the upper and lower parts of the hollow top cover, and are used for inserting and arranging the pie type coil section. The lower bracket is provided with a sliding groove table and a supporting part, and the sliding groove table is slidably connected with the supporting part. The sliding groove table is provided with a second installation slot which is used for supporting the pie type coil section. The end of the supporting part is detachably connected with the fixing base. The application has the advantages of simple structure and low cost. The pie type coil stress and air convection problem are solved through the upper and lower clamping structure, so that the electric reactor has enough heat dissipation space during operation. In combination with the sliding design, the function of adjustable inner diameter of the electric reactor is realized, so that the electric reactor can freely select the inductance value by adjusting the inner diameter within a certain range, and the application flexibility is enhanced.
Owner:NORTH CHINA ELECTRIC POWER UNIV
Prefabricated rectangular pool
The present application discloses an assembled rectangular pool, including L-shaped prefabricated components, which are connected to each other through joints and enclose the pool wall and part of the pool bottom of the rectangular pool; wherein, the L-shaped prefabricated components at the four corners of the pool wall have two flat plates arranged vertically to form the corners of the pool wall, and the remaining L-shaped prefabricated components have one flat plate arranged horizontally to form part of the pool bottom, and one flat plate arranged vertically to form part of the pool wall; the flat plate prefabricated components are adapted to the filling part of the pool bottom formed by the L-shaped prefabricated components, and are connected to each other through joints with the L-shaped prefabricated components to form a complete pool bottom; the joints of the L-shaped prefabricated components and the flat plate prefabricated components are integral joints in the form of post-cast strips. The rectangular pool is reasonably divided into L-shaped prefabricated components and flat plate prefabricated components, and the combination of the two can flexibly realize pool structures of various sizes, reduce the types of prefabricated components, unify the same specifications and sizes, and realize larger-scale and more forms of assembled pools with fewer specifications and simple forms of prefabricated components.
Owner:SDIC XINKAI WATER ENVIRONMENT INVESTMENT CO LTD
Turnover structure of battery box
The utility model provides a turnover structure of a battery box, and relates to the technical field of battery turnover. The turnover structure of the battery box comprises a bearing table, the bearing table is provided with a bearing table top, the bearing table top is used for bearing the battery box, the bearing table top is provided with a plurality of roller assemblies, the roller assemblies are arranged on the bearing table top at intervals, and the axes of rotating shafts of the roller assemblies are arranged in parallel, so that the damage risk is reduced, and the service life of the battery box is prolonged. Therefore, the battery box can stably slide with lower friction force, and the problem that in the prior art, when the battery box is installed, a liquid cooling plate at the bottom and a forklift arm are rubbed and stressed, so that the battery box is scratched or scratched through and leaks liquid is solved.
Owner:ZHUHAI YINLONG ELECTRICAL APPLIANCES +1
A boring device for boring a hole in a reverse arc-shaped valve hanger shaft of a ship lock
ActiveCN224294744UThe structural principle is clear and simpleEasy to installClimate change adaptationBoring/drilling componentsWear corrosionMarine engineering
The utility model provides a kind of shiplock reverse arc valve lug hole boring equipment, including parallelly arranged support bearing seat, support bearing seat is fixedly installed on combined support, boring bar is slidably and rotatably installed in the inside of support bearing seat, cooperating installation cutter holder is installed on boring bar, cooperating installation cutter is installed on cutter holder, fixedly installed with anti-rotation connecting plate on the outer wall of one side of support bearing seat, cutting power device for driving boring bar rotation and cutting is installed on anti-rotation connecting plate;The tail portion of the boring bar is equipped with a feeding power device for driving its feeding. Ensure that the original position boring can be realized without removing the reverse-arc door, the boring equipment is convenient to install on the reverse-arc door, firm and reliable, boring equipment level, height position is adjustable, can accurately repair the wear, corrosion damage lug hole.
Owner:THREE GORNAVIGATION AUTHORITY
Negative heel health-care sole and shoe
ActiveCN222548667UImprove support stabilitySolve the force problemSolesPhysical medicine and rehabilitationHeel strike
The utility model relates to a health-care negative-heel sole which comprises a negative-heel sole body with a high front part and a low rear part, a half sole part is arranged at the position, corresponding to the front part of a sole, of the negative-heel sole body, a heel part is arranged at the position, corresponding to a heel, of the negative-heel sole body, and an arch part is formed between the heel part and the half sole part of the negative-heel sole body. A first supporting block and a second supporting block which extend outwards are formed on the left side and the right side of the negative-heel sole body respectively, the lower surface of the first supporting block is correspondingly connected with the lower surface of the negative-heel sole body, and the lower surface of the second supporting block is correspondingly connected with the lower surface of the negative-heel sole body. After the technical scheme is adopted, the first supporting block and the second supporting block which extend outwards are arranged on the half sole part, so that the supporting stability of the half sole part is improved, the problem that the half sole part of a negative heel sole is high and low in stability is solved, and the structure is simple.
Owner:杨卿灿
High-temperature static strain gauge preparation method and high-temperature static strain gauge
ActiveCN121576982BReal-time measurement of static strainSolve the problem of pasting stressMaterial gluingLaminationThermodynamicsInsulation layer
This invention provides a method for preparing a high-temperature static strain gauge and the high-temperature static strain gauge itself. The method includes: step S01, surface treatment of the test piece; step S02, attaching a working strain gauge to the surface of the test piece; step S03, laying a first high-temperature cotton insulation layer on top of the working strain gauge; step S04, laying a compensation strain unit on the first high-temperature cotton insulation layer; step S05, laying a second high-temperature cotton insulation layer on the compensation strain unit; and step S06, bridging the strain gauge and covering the second high-temperature cotton insulation layer with a protective layer. This invention solves the problem of large differences between steady-state and transient thermal output caused by the curve correction method, and realizes real-time measurement of static strain in high-temperature environments.
Owner:AECC SICHUAN GAS TURBINE RES INST