17results about How to "Solving resonance problems" patented technology

The invention discloses a silencer, a silencer assembly and a server, which are applied to the technical field of silencer structures and used for solving the problem that noise affects the performance of a mechanical hard disk, and the silencer comprises a shell which comprises a first cylinder body and a hollow cylinder bottom arranged at one end of the first cylinder body; the inner shell comprises a second barrel and a sound cavity wall arranged on the periphery of the second barrel, and a through hole penetrating through the wall thickness of the second barrel is formed in the second barrel; the base is connected with at least one of the first barrel and the second barrel and located at the end, away from the barrel bottom, of the silencer; the inner shell is arranged in the outer shell, the end, away from the cylinder bottom, of the outer shell is connected with the inner shell, the sound cavity wall is attached to the inner wall of the outer shell, and a noise reduction cavity is formed in the space between the inner shell and the outer shell. Noise generated by rotation of the fan enters the noise reduction cavity through the inner hole of the inner shell to be consumed, the noise of the fan can be optimized through the silencer, and the influence of the noise on the performance of the mechanical hard disk is reduced.

The utility model relates to the technical field of shutters, in particular to a shutter blade capable of being transversely adjusted, which comprises a main shutter piece, a pair of transversely penetrating storage channels are arranged in the main shutter piece along the length direction, and extension shutter pieces are respectively matched in the storage channels; reinforcing ribs are arranged on the sides, close to each other, of the two extending curtain pieces, and track grooves are formed in the positions, corresponding to the reinforcing ribs, of the containing channel. According to the louver blade capable of being transversely adjusted, the extending curtain pieces in the main curtain pieces can be pulled out to adjust the overall width of a louver, and the shielding requirements of various special-shaped windows are met through the extending amount of the extending curtain pieces.

The present application relates to the technical field of girder steel, and particularly relates to a thin-specification 700BL girder steel without Nb and a production method thereof; a continuous casting blank is sequentially subjected to the steps of heating, post-furnace high-pressure water descaling, rough rolling, hot coil box, flying shear, pre-rolling descaling, finishing rolling, laminar cooling and coiling to prepare the thin-specification 700MPa girder steel; the post-furnace high-pressure water descaling is provided with two groups, the pre-rolling descaling is provided with one group, and descaling is performed at the inlet of the first pass of rough rolling; the thickness of the thin-specification 700MPa girder steel is 2.5-3mm. The product performance and processing performance of the present application both meet the requirements. Through the design of the whole-line temperature process parameters and the reasonable setting of the multi-point distributed descaling process, the resonance problem of the finishing rolling mill is solved, and the production stability is improved.

The utility model discloses a double-sided metallized film and a capacitor, and relates to the technical field of capacitors, the double-sided metallized film comprises a dielectric film, two sides of which are respectively a first surface and a second surface; the zinc-aluminum alloy layer is arranged on the first surface, and the zinc-aluminum alloy layer does not completely cover the first surface and forms a first blank margin; the aluminum layer is arranged on the second surface, and the aluminum layer does not completely cover the second surface and forms a second blank margin; the first blank margin and the second blank margin are arranged in a staggered mode. According to the double-sided metallized film, gaps between films are reduced, so that noise after electrification is reduced.

The utility model relates to the technical field of aero-generators, and provides a flexible shaft connecting structure for an aero-motor, which comprises a hollow shaft, a flexible shaft body and a damping disc, the hollow shaft is arranged in a generator and serves as an input end of the generator, and an annular friction surface is arranged outside one end of the hollow shaft; the flexible shaft body is concentrically arranged in the hollow shaft, the end, located in the hollow shaft, of the flexible shaft body is fixed to the end, away from the friction face, of the hollow shaft, and the other end of the flexible shaft body extends out of the hollow shaft. According to the flexible shaft connecting structure for the aviation motor, the friction surface and the damping disc are arranged, and the inner conical surface matched with the friction surface is arranged on the damping disc, so that the flexible shaft and the hollow shaft are prevented from generating relative offset, and after the flexible shaft and the hollow shaft generate offset, the flexible shaft and the hollow shaft are corrected through the elastic damping disc and the friction surface; the transmission reliability of the hollow shaft and the flexible shaft is improved, and the resonance problem caused by the generator flexible shaft is solved.

The utility model relates to the technical field of vehicle empennage mounting structures, in particular to an electric empennage mounting structure and a vehicle. A hatchback door assembly of the electric tail wing installation structure comprises a hatchback door inner plate, a hatchback door outer plate and a reinforcing piece, the reinforcing piece is connected with the hatchback door inner plate in a welded mode, and an installation window is formed in the hatchback door outer plate; the driving assembly comprises a mounting part and a driving mechanism fixed on the mounting part, the mounting part is buckled on the mounting window, and the mounting part, the hatchback door outer plate and the reinforcing part are sequentially laminated and then are fastened and connected through bolts; the electric tail wing is arranged on the side, away from the hatchback door inner plate, of the hatchback door outer plate, and the electric tail wing is connected with the driving assembly. The rigid supporting capacity of the hatchback door in the electric empennage installation area is effectively improved, the resonance problem caused by structure weakening is avoided, noise and vibration in the vehicle running process are reduced, and the whole vehicle performance and riding comfort are improved.

The invention relates to a method for transforming a connector. The method is used for transforming a connector comprising a plug end and a socket end. The method comprises the following steps of: increasing the thickness of a first part line segment of a signal terminal at a plug end, wherein the position of the first part line segment is adjacent to a hollow part of an insulating plate; and the thickness of a second part line segment of the signal terminal is increased at the socket end, and the second part line segment is provided with a slope structure. According to the method, signal terminal structures of a plug end and a matched socket end of the connector are modified, and modification is selectively carried out on a circuit board of the plug end of the connector, so that the transmission bandwidth of the connector is increased, and the data transmission rate of the connector is improved.

The invention provides a harmonic reducer and a robot, and relates to the technical field of harmonic transmission. The harmonic reducer comprises a rigid gear, a flexible gear and a wave generator; the rigid gear is sleeved with the flexible gear, and outer teeth of the flexible gear are meshed with inner teeth of the rigid gear. The flexible gear is sleeved with the wave generator; a damping particle cavity is formed between the outer circumferential wall and the inner circumferential wall of the rigid wheel and filled with metal particles. Wherein the flexible gear is the fixed end of the harmonic reducer, the wave generator is the input end of the harmonic reducer, the rigid gear is the output end of the harmonic reducer, and the rotation of the rigid gear can enable metal particles to collide and rub to generate low-order damping and enable the metal particles to collide and rub with the rigid gear to generate high-order damping. According to the arrangement, the metal particles and the rigid wheel are jointly combined into the particle damping shock absorber, the integrated design of the particle damping shock absorber and the rigid wheel is achieved, generated low-order damping and high-order damping are used for absorbing vibration energy, and the problem of how to effectively suppress resonance of a harmonic reducer in the prior art is solved.

This utility model relates to the field of compressor technology, specifically disclosing a plastic coil integrated with the intake and exhaust chambers. It includes an integrated cylinder head, with an intake silencer chamber upper cover, an exhaust silencer chamber upper cover, an intake silencer chamber lower cover, and an exhaust silencer chamber lower cover integrally formed at the bottom end of the cylinder head. The bottom end of the exhaust silencer chamber lower cover is connected to and installed with a plastic coil. A Bundy tube is fitted onto the end of the plastic coil, and a compressor exhaust pipe is welded to the end of the Bundy tube opposite to the plastic coil. The intake and exhaust silencers and cylinder head of this application are integral injection molded parts, reducing installation steps and connecting parts. The plastic coil is made of common materials such as polypropylene, replacing the Bundy tube, and its inherent frequency avoids the power supply frequency commonly used in variable frequency products, thus solving the resonance problem. A 30mm Bundy tube connects the plastic exhaust chamber and the compressor exhaust pipe, solving the welding problem, and a sol-gel tank is provided at the connection point for heat fusion, preventing the coil from falling off.

The utility model relates to a marine frame-type multi-layer water chilling unit, and mainly discloses a marine frame-type multi-layer water chilling unit which can reduce resonance of parts and is convenient to assemble and maintain. The air conditioner comprises a base, an assembly frame, a distribution box, an evaporation part, a condensation part, a compressor and a display adjusting panel, the evaporation part, the condensation part, the compressor and the display adjusting panel are electrically connected with the distribution box, the evaporation part and the display adjusting panel are installed at the top end of the base, the assembly frame comprises a first support, and the first support comprises a first supporting rod and a first installation frame. A condensation part is installed at the top end of the first installation frame, a second support is arranged at the top end of the first support and comprises a second installation frame and a second supporting rod, and a compressor is installed at the top end of the second installation frame. The assembling frame is additionally arranged at the top of the base, so that the water chilling unit can be freely disassembled and assembled, and meanwhile, product damage caused by resonance among parts during equipment operation is avoided. The utility model is suitable for the field of instrument equipment installation.

The application discloses an anti-impact and anti-vibration dam body hydraulic structure, which comprises a plurality of protection units arranged in an array on a water-impingement surface of the dam body, each protection unit comprising a flexible protection plate, a buffer column, a damping and shock-absorbing assembly and a secondary shock-absorbing assembly; the flexible protection plate directly receives water flow impact and silt abrasion; the buffer column uniformly transmits the impact force to the damping and shock-absorbing assembly for preliminary energy consumption; the secondary shock-absorbing assembly is linked with the damping and shock-absorbing assembly to further dissipate the residual impact energy. The application replaces the traditional rigid anti-impact mode with a hierarchical energy dissipation system, effectively solves the problems of easy cracking, stress concentration and insufficient energy dissipation on the water-impingement surface of the dam body, can reduce the impact force transmitted to the main body of the dam body, improves the anti-impact and anti-vibration performance and durability of the dam body, and is suitable for various reservoir and riverway dam body engineering.

The low-noise compressor shell comprises a shell body, a plurality of craters are arranged on the surface of the shell body, and the craters enable the surface of the shell body to form a honeycomb pitted surface. The surface of the compressor shell is treated to form craters, so that the surface of the shell presents a honeycomb pitted surface effect, the reflection path of sound waves is increased, the penetration of noise is reduced, the inherent frequency of the whole machine is improved and the resonance problem can be effectively avoided through the characteristic that the surface of the shell is uneven.

The invention discloses a condensation water system which comprises a condenser, a hot well, a condensation water pump, a heating device and a deaerator. The condenser is used for forming condensed water; a hot well is arranged below the condenser; the hot well is used for collecting and storing condensed water of the condenser; a hot well outlet is connected with a condensed water pump inlet; the condensate pump is used for pumping condensate water in the hot well and conveying the condensate water to the heating device; an outlet of the condensate pump is connected with an inlet of the heating device through a pipeline, a condensate bypass electric valve and a condensate adjusting valve are arranged on the pipeline, and the condensate adjusting valve is connected with the condensate bypass electric valve in parallel. The heating device is used for heating condensed water; an outlet of the heating device is connected with an inlet of the deaerator; the condensate pump comprises three stages of impellers, and the condensate pump with the three stages of impellers is obtained by removing the fourth-stage impeller in the condensate pump with the original four-stage impeller and additionally installing a fixing piece at the position where the impeller is removed.

The utility model discloses an air compressor waste heat recovery device which is connected to an air compressor and comprises a shell, a recovery assembly and at least two connecting assemblies, a cavity used for containing the air compressor is formed in the shell, and the recovery assembly comprises an air inlet pipe, an air outlet pipe and a circulating heat exchange piece. The air inlet pipe and the air outlet pipe communicate with the interior of the shell and the interior of the circulating heat exchange part correspondingly and are used for heat exchange, the connecting assembly comprises sliding parts and a buffering part, the at least two sliding parts are arranged in a spaced mode and connected to the air compressor, and the sliding parts are connected to the inner wall of the shell and can slide relative to the shell; the buffer part is connected to the sliding part and the inner wall of the shell and used for providing restoring force for automatic resetting after the sliding part slides. According to the utility model, the problem that the shell of the waste heat recovery chamber generates resonance and noise due to the fact that vibration generated when the air compressor works is transmitted to the shell of the waste heat recovery chamber can be solved.

The invention discloses a method for transforming a connector and a high-speed connector formed by the same. The method comprises the following steps: respectively coating dielectric materials on partial line segments of signal terminals in a socket end and a matched plug end of the connector, and selectively combining with two modifications proposed on a circuit board in the plug end of the connector, so as to increase the transmission bandwidth of the connector and improve the data transmission rate of the connector.

The utility model discloses an elevator bearing beam damping adjusting device which comprises a traction system, a guide rail and a rubber damping pad. The traction system comprises a traction machine, an elevator bearing beam and a supporting seat, and the traction machine is connected with the elevator bearing beam; a rubber anti-vibration pad is arranged on the connecting portion of the elevator bearing beam, the elevator bearing beam, the rubber anti-vibration pad and the supporting seat are connected and fixed through the holed bolt assembly, and the supporting seat is clamped on the guide rail in a sliding mode. According to the damping adjusting device for the elevator bearing beam, the damping effect on a box type elevator can be achieved.

The utility model provides a kind of internal combustion engine slide valve type gas distribution structure, including lower valve body, slide valve and upper valve body, slide valve is located in upper valve body, lower valve body intermediate, transmission rod is equipped between upper valve body and slide valve, transmission rod one end is equipped with sprocket, slide valve is integrally embedded in lower valve body upper end surface, gas distribution port is opened in slide valve, lower valve body is opened in and exhaust hole one gas inlet hole one, upper valve body is opened in and exhaust hole two gas inlet hole two, exhaust hole two corresponding position with gas inlet hole one, gas inlet hole two of the utility model have Advantage: through the combination structure of lower valve body, slide valve, upper valve body and transmission rod, avoid traditional valve type gas distribution structure spring resonance problem, improve gas distribution timing precision, gas distribution phase flexible adjustment, simplify overall structure, improve gas flow efficiency simultaneously, it is favorable for fuel full combustion and the improvement of internal combustion engine power performance.