21results about How to "Ensure dynamic balance" patented technology

The invention discloses a motor rotor virtual assembly and pose optimization method based on a dynamic rotation axis, and the method specifically comprises the steps: obtaining the point cloud data of a rotor shaft and a rotor iron core, solving the surface mass center of each cross section of the rotor shaft and the mass centers of the two sides of each silicon steel sheet of the rotor iron core, fitting a rotor model and a rotor iron core model, and optimizing the pose of the rotor. After virtual assembly, the rotor is placed on the two rotor brackets; a rotor shaft model is discretized in the circumferential direction, a rotor overall dynamic balance equation is constructed, and a multi-objective optimization algorithm is adopted to solve the optimal solution of the assembly phase of the rotor iron core and the rotor shaft. According to the method, the influence of multiple factors such as rotor axis dynamic deviation, different contact states of the rotor and a rotor bracket when the rotor is in different circumferential phases and rotor core eccentricity on rotor dynamic balance is considered, a rotor overall dynamic balance equation is established, and the optimal solution of the rotor core and rotor shaft assembly phases is solved; and virtual assembly and pose optimization of the motor rotor are realized, so that actual assembly of the motor rotor is guided, and the dynamic balance performance of the motor rotor after actual assembly is ensured.

The utility model discloses a high accuracy frock suitable for slanting roof exchange processing is provided with a plurality of support feet on the bottom surface of its bottom plate, and the top surface of the bottom plate is detachably connected with a locking positioning device, the top of the locking positioning device is provided with a plug-in hole, the plug-in hole is used for receiving a slanting roof, and a plurality of inserts are arranged on the side surface of the locking positioning device to fix the slanting roof inside the locking positioning device. After the bottom plate and the locking positioning device are fixed, the slanting roof is inserted into the locking positioning device through the plug-in hole, then the insert is inserted into the locking positioning device from the side surface of the locking positioning device, and the slanting roof is fixed in the locking positioning device, so that the mold processing is facilitated. When it is necessary to replace the slanting roof, the insert can be disassembled to quickly replace the slanting roof, and the slanting roof to be processed is reloaded, so that the preparation time before superfinishing is reduced, the slanting roof is quickly replaced, the efficiency is improved, and the technical problem that the existing slanting roof superfinishing frock is fixed in a downward pressing mode, the processing coordinates need to be recalibrated after the completion of each work, and the mold needs to be reloaded is solved.

The coaxial speed reducer integrated structure is installed in a speed reducer shell and comprises a planetary gear assembly and a differential mechanism, the planetary gear assembly comprises a sun gear connected with the output end of a driving motor, a planet carrier, an inner gear ring fixed to the speed reducer shell, and a planetary gear rotationally installed on the planet carrier and meshed with the sun gear and the inner gear ring. The differential mechanism comprises a lower half differential shell, a differential mechanism shaft, a bevel gear installed on the differential mechanism shaft and a half axle gear meshed with the bevel gear, the planet carrier comprises an upper installation plate and an upper half differential shell integrally formed under the upper installation plate, the planet gear is installed on the upper installation plate and extends out of the planet carrier, and the upper half differential shell and the lower half differential shell are in coaxial butt joint to form a differential shell. The bevel gear and the half axle gear are arranged in the differential shell, and the differential shaft extends out of the differential shell. The size and the weight of the planet carrier can be effectively reduced, casting forming is easier, the heat dissipation and lubricating efficiency of the planet gear assembly is improved, the dynamic balance of a transmission system is guaranteed, and the transmission reliability is improved.

The utility model provides a high-pressure wear-resistant centrifugal steam turbine impeller, which relates to the technical field of steam turbine impellers, and comprises a connecting shaft, fan blades, a limiting piece, a mounting plate, a connecting shaft, a connecting shaft, a connecting shaft, a connecting shaft, a connecting shaft, a connecting shaft, a connecting shaft and a connecting shaft, and is characterized in that the limiting piece is arranged outside the fan blades and is used for connecting and limiting the fan blades; the fixing ring is fixedly arranged on the outer sides of the ends of the multiple fan blades, the mounting piece is arranged in the mounting plate, the limiting block is fixedly arranged on the inner side of the mounting plate, and the ends of the fan blades are fixed through the fixing ring and a multi-stage limiting structure of the connecting ring and the limiting plate. Compared with the prior art, the vibration trend of the fan blades under the action of wind power in operation can be effectively limited, it is ensured that the positions of the fan blades are relatively static, the vibration amplitude is greatly reduced, the phenomena of friction, collision frequency and stress concentration between the fan blades and peripheral components are remarkably reduced through vibration reduction, and material fatigue, abrasion and structure looseness caused by high-frequency vibration are avoided.

This invention provides a microcrystalline glass lens polishing device with automatic cleaning, relating to the technical field of machine tools or devices and accessories designed for grinding or polishing optical surfaces on lenses and other workpieces with similar shapes. Through the aforementioned configuration of liquid bladders, limiting frames, liquid inlets, and gas inlets, this invention enables the pressure control system to adjust the hydraulic pressure of each liquid bladder according to feedback from the pressure sensor array during microcrystalline glass lens polishing. This ensures a uniform and adjustable pressure distribution of the grinding layer on the curved surface of the microcrystalline glass lens, solving the problems of traditional rigid polishing heads being unable to adapt to the curved contours of microcrystalline glass lenses and unable to compensate for uneven pressure in real time. It achieves independent zoned control of polishing pressure. Simultaneously, by alternately or simultaneously introducing cleaning and polishing fluid through the liquid inlets, combined with the blowing and draining function of the gas inlets, automatic cleaning and media switching are achieved during the polishing process, improving the surface flatness of the microcrystalline glass lens and reducing manual intervention steps.

The application discloses an aero-engine compressor blade damage on-site repair method in the technical field of compressor blade damage repair, adopts any one or a combination of two of the repair methods of the repair method or the symmetric shearing method, removes the damage on the blade without disassembling the blade disc, reduces the influence of the damage on the compressor performance, simultaneously prevents the damage from further expanding, and the repaired blade disc can continue to be used, increases the service life of the blade disc, and guarantees the safety during the use of the blade disc.

The embodiment of the invention discloses a turbo machine and a dynamic balance adjusting method, and the turbo machine comprises a machine shell and a rotating mechanism. The rotating mechanism comprises a rotating shaft, a thrust disc, a mass center adjusting piece and an impeller. The rotating shaft is rotatably arranged on the machine shell and used for being in transmission connection with a motor rotor. The thrust disc is arranged on the periphery of the rotating shaft in a sleeving mode and connected with the rotating shaft to balance the axial force of the rotating shaft. The mass center adjusting piece comprises a shaft sleeve and a balance weight part arranged on the shaft sleeve, the shaft sleeve is arranged on the periphery of the rotating shaft in a sleeving mode and located on the side, in the axial direction of the rotating shaft, of the thrust disc, and the balance weight part is used for adjusting the position of the mass center of the mass center adjusting piece in the radial direction of the rotating shaft. The impeller is in transmission connection with the rotating shaft, and the thrust disc and the shaft sleeve are clamped between the impeller and the rotating shaft. According to the embodiment of the invention, the axial length of the rotating mechanism is shortened under the condition that the dynamic balance effect of the rotating mechanism is ensured.

The embodiment of the invention provides a battery charging and discharging control method and system, an energy storage inverter and a medium, the method is applied to the energy storage inverter, and the battery working state and the battery state parameter of each battery module are obtained; determining a reference battery module and other battery modules except the reference battery module from the plurality of battery modules according to the battery working state and the battery state parameter of each battery module; determining a parameter difference value between the battery state parameter of the reference battery module and the battery state parameter of each other battery module; and acquiring a preset working control curve, and controlling the working parameters of the other battery modules according to the preset working control curve and the parameter difference values so as to reduce or maintain the parameter difference values. Therefore, the difference of the battery state parameters among the battery modules can be prevented from continuously increasing when the multiple battery modules work, and the dynamic balance of the working states among the multiple battery modules is effectively guaranteed.

The soft film sealing bin capable of being operated by the bare hand comprises a bin body, the bin body is communicated with an inflator pump, a plurality of bare hand channels are arranged on the bin body, each bare hand channel comprises a soft film oversleeve extending from the outer wall of the bin body to the interior of the bin body, and an avoiding opening used for avoiding the bare hand channels is formed in the outer wall of the bin body. A bin body inlet is formed in the end, away from the receding opening, of the soft film oversleeve, a sealing plug is detachably connected to the bin body inlet, an elastic sealing wrist is detachably connected to the end, close to the bin body inlet, of the soft film oversleeve, the elastic sealing wrist is provided with a receding hole for a hand to penetrate through, and the sealing plug is partially located in the receding hole of the elastic sealing wrist.

The commutator base tin explosion prevention welding device comprises tin soldering modules, a device table top, a rotating disc and a rotor commutator, the welding modules are annularly and evenly distributed and fixedly connected to the device table top, a machining station is formed in the center of the welding modules, and the rotor commutator is installed on the rotating disc and located at the machining station. The turntable is mounted on the device table board; the tin soldering module comprises a welding gun support, a material spraying assembly, a baffle assembly, a grinding and cutting assembly and a wire supply wheel, tin wires are arranged in the wire supply wheel, the grinding and cutting assembly cuts off the tin wires to form tin sections, the material spraying assembly and the grinding and cutting assembly are connected through a tin section guide pipe, the tin sections are fed into the material spraying assembly through the tin section guide pipe, and the material spraying assembly heats the tin sections and then sprays the tin sections to the rotor commutator. The baffle assembly is arranged between the material spraying assembly and the coil, after welding is completed, the baffle assembly recovers and automatically cleans residual tin slag, the tin soldering amount can be accurately controlled, and the tin slag is prevented from adhering to the coil.

The utility model discloses a high rotating speed motor rotor punching sheet, comprising a silicon steel sheet body, a plurality of arc-shaped projections arranged on the outer peripheral surface of the silicon steel sheet body, flat magnetic grooves arranged on the silicon steel sheet body corresponding to the inner sides of the arc-shaped projections, air grooves arranged at two ends of the flat magnetic grooves, and a shaft hole arranged at the central position of the silicon steel sheet body. The hole edge of the shaft hole is provided with a plurality of concave positions, and lightening holes and balancing holes are formed in the peripheral positions corresponding to the shaft hole. A ventilation recess is formed between two adjacent arc-shaped projections, so that the temperature of the rotor punching sheet and the magnetic steel can be effectively reduced. Moreover, the arc-shaped protrusions can reduce the harmonic component of the air gap, reduce the torque pulsation, and enhance the structural strength of the stator punching sheet. The flat magnetic grooves are used for inserting the magnetic steel, and air can flow through the air grooves at the two ends of the flat magnetic grooves to assist in heat dissipation, so that the rotor is subjected to heat dissipation in the operation process, and the operation performance of the motor is ensured. Meanwhile, the concave position is arranged, an air channel is added, the heat dissipation effect is further improved, and the temperature of the motor during operation can be reduced; the balance holes can effectively keep dynamic balance of the rotor, and vibration and noise are reduced. The lightening holes not only reduce the weight of the rotor, but also facilitate the improvement of the efficiency of the motor and the reduction of energy consumption, especially at a high rotating speed, the influence of mass on the balance and high-speed operation of the rotor is reduced, and the high-rotating-speed performance of the rotor is improved.

The present invention relates to the technical field of biaxially stretched optical film production, specifically to a zero temperature difference spiral flow channel heat exchange roller of a longitudinal stretching machine, comprising a heat transfer cylinder body, a first end cover and a second end cover, wherein the first end cover and the second end cover are distributed at both ends of the heat transfer cylinder body, a flow guide mechanism and a spiral sheet are arranged inside the heat transfer cylinder body, the flow guide mechanism comprises a reflux pipe, a liquid inlet pipe and a partition, the outer surface of the reflux pipe is sleeved with a connecting seat, the outer surface of the connecting seat is sleeved with a ball bearing and a liquid inlet joint, the liquid inlet joint is movably connected to the connecting seat through a ball bearing, the outer surface of the liquid inlet joint is provided with an arc groove, a sealing ring is embedded in the arc groove, the outer surface of the connecting seat is sleeved with an umbrella-shaped sealing hoop, the umbrella-shaped sealing hoop is against the sealing ring, and the outer surface of the umbrella-shaped sealing hoop is sleeved with a fixed cover. The present invention has an umbrella-shaped sealing hoop, which improves dynamic sealing and keeps the roller surface temperature difference close to zero.

This application relates to the field of industrial ventilation equipment, specifically disclosing an industrial ceiling fan blade assembly and connection structure, including a blade mounting hub and multiple blade bodies mounted on the outer surface of the blade mounting hub. Multiple blade connecting seats are fixedly connected to the upper surface of the blade mounting hub, and a reinforcing connection component is fixedly connected to the upper surface of each blade connecting seat. A connector is fixedly connected to one end of each blade body. This industrial ceiling fan blade assembly and connection structure significantly improves connection strength through a triple connection of mechanical insertion, bolt fastening, and reinforcing components. Mechanical locking is achieved by inserting a long rod with an opening into a positioning groove. The bolt connecting lug is fastened to the side sliding frame with bolts. The reinforcing bolts of the reinforcing connection component further enhance the integrity of the blade body and the blade connecting seat. Compared to traditional single bolt connections, this structure increases tensile strength and shear strength, enabling it to withstand the centrifugal force of high-speed rotation of the industrial ceiling fan and preventing loosening or breakage.

The invention relates to the technical field of centrifugal fans, in particular to a multi-wing centrifugal fan which comprises a volute and an impeller. The volute is provided with an air outlet and two air inlets; the impeller comprises a hub disc, a hub, two reinforcing rings and two sets of blade assemblies, the hub is fixedly connected to the center of the hub disc, the two sets of blade assemblies are arranged on the two opposite side faces of the hub disc in a staggered mode, and each set of blade assembly is fixedly connected with the inner ring of one reinforcing ring; each blade assembly comprises a plurality of blades, and the blades of the two blade assemblies are the same in structure. The impeller is installed in the volute according to the preset size proportion and structure parameters. The structural design of the impeller and the volute is optimized, key size parameters are accurately matched, the positioning relation of all parts is defined, the aerodynamic performance, operation stability and assembly consistency of the fan are improved, and operation noise and abrasion are reduced.

The invention relates to a fruit picking roller for a peanut harvester and a peanut harvester. The fruit picking roller for a peanut harvester comprises a cylinder and a roller installed on the cylinder to drive the cylinder to rotate. A spiral introduction blade is connected to the feeding end of the cylinder, and the spiral introduction blade rotates with the cylinder to grab the peanut vine; the number of the spiral introduction blade is one; a counterweight block is provided on the cylinder, and the counterweight block is used to maintain the dynamic balance of the cylinder. The fruit picking roller for a peanut harvester adopts a single spiral introduction blade, which reduces the crushing rate of peanut fruits and improves the fruit picking efficiency. The cylinder feeding inlet is not easily blocked, which is very practical.

The invention relates to a calculation method of a flash evaporator, belongs to the technical field of energy utilization and power engineering, and solves the problem of waste of low-quality waste heat resources in traditional energy enterprises and the problem of damage to blades of a steam turbine caused by poor separator effect of the flash evaporator due to defects of a calculation method of the flash evaporator. Based on the relation between the water boiling point and the pressure and the control key parameters, the flash evaporation steam amount is calculated through a specific formula, heat balance calculation and multi-stage flash evaporation setting are combined, the design of the flash evaporator is optimized, efficient waste heat recycling is achieved, and the performance of a power generation system is improved. The waste heat utilization efficiency is improved, and energy waste is reduced; turbine blades are prevented from being damaged, and the power generation system stability is improved; the development of a low-temperature waste heat power generation technology is promoted, energy conservation and environmental protection are assisted, the requirements of multiple industries are met, and an effective solution is provided for energy structure optimization.

The embodiment of the invention provides a speed reducer with a gear ratio, and relates to the technical field of mechanical transmission. The speed reducer with the gear ratio comprises a front shell, the right side of the front shell is fixedly connected with a rear shell through a bolt, an input gear shaft used for providing power is installed in the middle of the front shell in a penetrating mode, the input gear shaft is connected with a motor output shaft, and an intermediate shaft body is transversely installed at the upper end of an inner cavity of the front shell; a sun wheel shaft body is transversely installed in the middle of an inner cavity of the front shell, the sun wheel shaft body and the input gear shaft are coaxially installed, and a planetary reduction gear set is installed on the right side of the surface of the sun wheel shaft body. By optimally designing the combination of the first-stage speed reduction mechanism, the second-stage speed reduction mechanism and the planetary speed reduction gear set, the function of automatically adjusting the speed reduction ratio under different working conditions is achieved, the reversing speed is increased, the hydraulic power loss is reduced, and the overall efficiency and reliability of the system are remarkably improved.

The invention relates to the technical field of water pump parts, and discloses a water level controller of a water pump, the water level controller comprises an upper floating layer and a lower floating layer, the upper floating layer and the lower floating layer are hollow, and the outer side of the upper floating layer and the outer side of the lower floating layer are respectively provided with a control port used for controlling the hollow degree of the upper floating layer and the lower floating layer; a switch control part penetrates through the upper floating layer and the lower floating layer from top to bottom, and the upper end and the lower end of the switch control part are used for making contact with the upper face and the lower face of a liquid container. The space inside the upper floating layer and the lower floating layer can be adjusted through the control port, sediment adsorption is avoided, a water pipe of the water pump is kept close to water on the liquid level all the time, floating objects are prevented from being sucked into the water pipe, and the device is suitable for the environment with severe liquid; the water pump can be automatically stopped in the water drainage and storage processes, water level control is achieved, water can be automatically drained when a water body exists in a drainage system, and water can be automatically fed when the water level in a water feeding system is lowered.

The utility model discloses an automobile seat blowing fan structure which comprises an upper shell, a lower shell, fan blades, a PCB and a blowing connecting piece, the upper shell is connected with the lower shell, an air cavity is formed between the upper shell and the lower shell, the fan blades are rotationally arranged in the air cavity, an air inlet is formed in the upper shell, and an air outlet channel is formed in one side of the upper shell and one side of the lower shell. Air enters the air cavity through the air inlet and is exhausted through the air outlet channel, a magnetic ring rotor is coaxially fixed in the fan blade, the PCB is installed on the lower shell, a fan stator is fixedly arranged on the PCB and coaxially arranged in the magnetic ring rotor, one end of the air blowing connecting piece is used for being connected with a ventilation air bag, and the other end of the air blowing connecting piece is connected to the air outlet channel. An air blowing channel in the air blowing connecting piece communicates with the air outlet channel, air enters the air cavity through the air inlet and is blown to the ventilation air bag through the air outlet channel and the air blowing channel, and a plurality of dynamic balance mud supplementing grooves are evenly formed in the fan blades in the circumferential direction. The ventilation effect of the seat can be improved, the noise of the fan is reduced, and the driving comfort is improved.

The present disclosure relates to a vibration absorber and a vehicle, the vibration absorber comprising: a mounting disc configured to be mounted on a drive shaft; a rubber main spring connected around an outer periphery of the mounting disc; a first mass ring embedded in the rubber main spring; a second mass ring connected to an outer periphery of the rubber main spring, and the first mass ring and the second mass ring are coaxially arranged with the mounting disc respectively; and a reinforcing member embedded in the rubber main spring, the reinforcing member comprising a first reinforcing member arranged between the mounting disc and the first mass ring, and a second reinforcing member arranged between the first mass ring and the second mass ring, and the reinforcing member is in contact with the rubber main spring. The first mass ring and the second mass ring can enable the vibration absorber to attenuate vibrations at two torsional vibration frequencies. The reinforcing member arranged in the rubber main spring can reduce the creep of the rubber main spring during operation of the vibration absorber, not only ensuring the dynamic balance of the vibration absorber, but also ensuring the strength of the rubber main spring, so that it is not easy to be damaged when bearing larger vibrations, thereby improving the service life of the rubber main spring.

A wire reel for automatic wire threading electric spark wire cutting machine tool, the wire reel is mainly composed of a fixed clamp block, a movable clamp block, a lever and a main compression spring, and the clamping mouth is normally closed. A power mechanism is provided for the lever to release the clamping force of the main compression spring on the wire reel. The power mechanism is external to the wire reel and does not rotate at high speed with the wire reel, avoiding the problem of the power source needing to be rotated and fed. An auxiliary compression spring is provided between the movable clamp block and the lever. The main compression spring provides a larger wire clamping force to the movable clamp block through the lever force amplification. When the clamping force of the main compression spring on the wire reel is released, the auxiliary compression spring provides a smaller wire clamping force to the movable clamp block, ensuring that the electrode wire does not separate from the wire reel during wire drawing, meeting the requirements of automatic wire threading of the machine tool. A V-shaped guide port is provided at the upper part between the fixed clamp block and the movable clamp block, which is used to guide the electrode wire into the wire clamping surface. The lower part of the fixed clamp block is designed as a micro-inclined surface that shrinks inward to position the electrode wire, ensuring that the electrode wire is reliably positioned during automatic clamping on the wire reel.