8results about How to "Ensure dynamic balance" patented technology

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 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 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.

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 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.