20results about How to "Solve Vibration Problems" patented technology

The utility model belongs to a foundation vibration isolation structure suitable for being adjacent to a subway basement in the field of civil engineering, and adopts the technical scheme that the foundation vibration isolation structure comprises double bottom plates and an anti-vibration pad, the double bottom plates comprise an upper bottom plate and a lower bottom plate, and the anti-vibration pad is arranged between the upper bottom plate and the lower bottom plate; the basement outer wall and the enclosure wall form double walls, the basement outer wall is connected with the upper bottom plate, the enclosure wall is connected with the lower bottom plate, and the anti-vibration pad extends upwards to be laid between the basement outer wall and the enclosure wall; the pile head of the uplift pile is fixedly embedded in the lower bottom plate; a waterproof layer is arranged below the anti-vibration pad, and the waterproof layer is arranged between the double bottom plates and the double walls; after construction of the uplift piles and the enclosure wall is completed, a cushion layer, a lower bottom plate, a waterproof layer, an anti-vibration pad, an upper bottom plate and a basement outer wall are sequentially formed from bottom to top. While the anti-floating and waterproof requirements of the basement foundation slab are met, the problem of environmental vibration caused by subway operation is solved, the use space in a building is not affected, and meanwhile the construction cost and the construction difficulty are low.

The invention relates to a self-resetting two-way colloid damper and an assembling method thereof, and belongs to the technical field of vibration control, the self-resetting two-way colloid damper comprises a piston connecting rod, a guide cylinder, an upper pressing plate, a cylinder body, a piston rod, an upper piston, a lower piston, a lower pressing plate, a piston rod limiting nut, a tail cylinder, a compression spring and working liquid with a porous lyophobic matrix, and the cylinder body is filled with the working liquid. The guide cylinder and the tail cylinder are respectively arranged at two ends of the cylinder body to form a cylinder body of the damper; an upper pressing plate is arranged on the side, close to the guide cylinder, in the cylinder of the damper, and a lower pressing plate is arranged on the side, close to the tail cylinder, in the cylinder of the damper. An upper piston and a lower piston are oppositely arranged on the inner side of the upper pressing plate and the inner side of the lower pressing plate correspondingly. A working liquid with a porous lyophobic matrix is filled between the upper piston and the lower piston; and the compression spring is sleeved on the piston rod between the upper piston and the lower piston. According to the invention, the problem of vibration control under normal use of constructional engineering and other dynamic systems can be solved, and the design of constructional engineering based on functionality and safety is realized.

The application provides a method for improving the performance of 35CrMo steel and application thereof. The method comprises the following steps: 1) heating 35CrMo steel to a first high temperature, carrying out first heat preservation, quenching, and obtaining quenched steel; 2) heating the quenched steel to a second high temperature, carrying out second heat preservation, and air cooling to obtain high-temperature tempered steel; 3) cooling the high-temperature tempered steel to a first low temperature, carrying out third heat preservation, and then increasing the temperature from the first low temperature to a second low temperature, and then decreasing the temperature from the second low temperature to the first low temperature, so as to form a cycle; then increasing the temperature from the first low temperature, and obtaining oscillation cycle cryogenic treated steel; 4) heating the oscillation cycle cryogenic treated steel to a third high temperature, carrying out fourth heat preservation, and air cooling to obtain cold and hot treated 35CrMo steel.

The application relates to a special clamp for surface treatment of an inverter copper piece, which comprises a base, a clamping unit, a flexible contact layer, a positioning pin assembly and a support adjusting mechanism. The clamping unit increases the contact area through adjustable clamping arms and the flexible contact layer, the positioning pin assembly reduces the impact force by using a spring buffer device, and the support adjusting mechanism provides uniform support through telescopic support rods. The application can effectively solve the problems of insufficient clamping area, uneven clamping force and insufficient support capacity of the existing clamp, avoid deformation or surface damage of the copper piece, ensure the uniformity of the surface treatment layer, simultaneously adopt a chemical corrosion resistant material, adapt to copper pieces of various shapes and sizes, and improve the applicability and treatment quality.

The invention provides a magnetic suspension generator rotor vibration suppression device and method, and belongs to the technical field of magnetic suspension generators, and the device comprises an electromagnetic bearing, a passive magnetic bearing and a damper; the electromagnetic bearing comprises an iron core and two coil assemblies, the iron core is installed on the outer wall of the rotor, and the two coil assemblies are arranged around the iron core; the passive magnetic bearing comprises an inner-ring permanent magnet and an outer-ring permanent magnet, the inner-ring permanent magnet is mounted on the outer wall of the rotor, the outer-ring permanent magnet is mounted on the inner wall of the generator shell, and the two corresponding permanent magnets have the same magnetism; the damper is installed on the generator and provided with a damping body and a stress sensor, one end of the rotor is connected to the damping body, and one end of the damping body is connected to the stress sensor. According to the magnetic suspension generator rotor vibration suppression device provided by the invention, by virtue of the radial and axial targeted suppression design, the out-of-control galloping of the rotor caused by excessive vibration is effectively avoided, and the operation stability and safety of the generator are guaranteed.

This utility model relates to the field of high-voltage electrical system technology, and particularly to a DC copper busbar with single-phase conduction function, comprising: an input copper busbar, an output copper busbar, a power diode, and an insulating material; the input and output copper busbars are arranged in parallel, and the two copper busbars have an overlapping area in a direction perpendicular to the plane of the copper busbars, with a predetermined gap between the input and output copper busbars in the overlapping area; the power diode is disposed within the gap in the overlapping area of ​​the input and output copper busbars, and its two ends are electrically connected to the input and output copper busbars respectively; the insulating material fills the remaining gaps outside the power diode in the overlapping area of ​​the input and output copper busbars. This utility model solves the problems of high cost, reliance on manual operation, and complex structure of existing anti-reverse protection measures.

The utility model relates to mechanical processing technical field discloses a machine tool protection structure for protecting Y axis system, machine tool protection structure includes front end board, and front end board is installed on the workstation, and is located the processing table mobile route one end, rear end board is installed on the workstation, and is located the processing table mobile route other end, metal cover is along Y and is arranged in the processing table lower part, and one end of metal cover is installed in the front end board, and the other end is installed in the rear end board, third protective cover and fourth protective cover are two, and are all set up between the two sides of guide rail seat and corresponding side metal cover, one end of third protective cover is connected with the front end board, and the other end is connected with the processing table, one end of fourth protective cover is connected with the rear end board, and the other end is connected with the processing table. The utility model solves the technical problem that the interval exists between the protective cover side wall and Y axis system in the prior art, and part of pollutants enters Y axis system from the interval, resulting in the technical problem that machine tool precision reduces, equipment service life shortens.

The application provides a high-altitude simulation test cabin penetrating support structure, which specifically comprises a test cabin body, a cabin support assembly, an engine mounting rack and a rack support assembly. The test cabin body is installed on a factory building foundation through a plurality of cabin support assemblies. A rack concrete foundation is arranged on the factory building foundation below the test cabin body. The engine mounting rack is located in the test cabin body. A gap is maintained between the engine mounting rack and the test cabin body. The engine mounting rack is installed on the rack concrete foundation through a plurality of rack support assemblies penetrating the bottom of the test cabin body. A through hole is arranged in the sidewall of the bottom of the test cabin body for the rack support assembly to penetrate. A gap is arranged between the engine mounting rack and the test cabin body. A gap is arranged between the rack support assembly and the through hole. The edge of the through hole and the rack concrete foundation are sealingly connected through a sealing sleeve assembly. The safe operation of the test equipment is ensured, and the measurement accuracy of the engine performance parameters is ensured.

The utility model belongs to the technical field of soil wind erosion, disclose a kind of indoor small soil wind erosion experimental simulation device, the device includes test section, fusion section and contraction section, the one end of contraction section far from fusion section is first port, is provided with ventilation unit;The one end of contraction section close to fusion section is second port, is provided with rectifier net;Sample box is provided in the fusion section, for installing soil, the lower end surface of sample box and fusion section is abutted, the one end of test section far from fusion section is provided with baffle, test section, fusion section, contraction section and ventilation unit are fixedly connected by fitting mode, while guaranteeing the stability of the overall structure of device, greatly simplify the disassembly and assembly process, after experiment, device can be quickly and conveniently disassembled, each section inner wall is thoroughly cleaned, effectively solve the problem of inner wall cleaning difficulty, improve cleaning efficiency, ensure the cleanliness of device inside.

This invention discloses a stacker crane upper guide wheel device with shock absorption and noise reduction function, which solves the problem of how to overcome the vibration of the top clamping guide wheel of the stacker crane. A square shaft through hole (6) is provided on the left guide wheel mounting seat (4). A square shaft (7) with external thread at the top is connected in the square shaft through hole (6). A left rectangular V-shaped leaf spring (8) is connected to the square shaft. A left front wheel axle vertical connecting tube (10) is provided at the front end of the left rectangular V-shaped leaf spring (8). A left rear wheel axle vertical connecting tube (11) is provided at the rear end of the left rectangular V-shaped leaf spring (8). A left front vertical wheel axle (12) is fixedly connected in the left front wheel axle vertical connecting tube (10). A left front upper guide wheel (15) is connected at the upper end of the left front vertical wheel axle. A left front lower guide wheel (14) is connected at the lower end of the left front vertical wheel axle. This overcomes the vibration problem of the top guide wheel of the stacker crane caused by errors in the installation of the overhead rail and other factors.

The present invention discloses a turbine impeller structure, comprising a hub and a plurality of blades fixed on the hub, characterized in that each of the blades comprises a blade body and a blade split, and a blade split is fixed on each blade body at the blade tip located at the blade inlet edge. Aiming at the problem of vibration and induced noise of turbine impeller blades of a cantilever structure of the same material, the present invention provides a turbine impeller structure of a cantilever structure. The turbine machine adopting the structure of the present invention has low vibration and low noise performance, and can reduce the vibration of the blades under the action of unsteady forces and the induced noise.

The utility model discloses a motor reduction gearbox noise reduction device, including the shell, the one side outer wall fixed connection of shell output has the gasket, the inner wall fixed connection of gasket has the locating ring, gasket adopts soft glue material, the both sides of gasket are located in the locating ring. The gasket material in the middle of motor shell and locating ring changes to soft glue, and soft glue has the effect of absorbing vibration and reducing noise, ensures that the vibration and noise of motor are reduced when high -speed rotation of motor, because the volume of the ring and gasket is small, so save the space, reduce the cost, can solve the vibration and noise of motor gear reduction gearbox simultaneously fast.

The present invention relates to the field of design methods for RV reducers, core components of industrial robots, and discloses a vibration characteristic analysis method for RV reducers based on digitization. The method includes the following steps: constructing parameter values ​​based on an analytical calculation method, designing a parametric model based on a size optimization guidance and a three-dimensional intelligent design method, automatically assembling the RV reducer based on a computer-aided design method, and analyzing the vibration characteristics of RV reducer parts based on a numerical analysis method. Among them, the size optimization guidance method is used for the allocation and constraint of parameter values; the three-dimensional intelligent design method is used for program-driven modeling; the computer-aided design method is used for the automatic assembly of RV reducers; and the numerical analysis method is used for the vibration characteristic analysis of RV reducers. The numerical analysis method based on the parametric model of the present invention analyzes the vibration characteristics, which can predict the vibration characteristics of the system under different conditions, and is of great significance for evaluating system performance and preventing vibration problems.

This invention relates to a sealing device for a steam turbine, which is disposed at the end of a bearing housing and fitted onto the turbine rotor. The sealing device has a bearing side near the bearing and an air side on the other side. The sealing device includes an upper sealing assembly and a lower sealing assembly. The arc-shaped inner edges of the upper sealing assembly and the lower sealing assembly together form a rotor through hole, and the rotor is located in the rotor through hole. Airtight channels are respectively provided inside the upper sealing assembly and the lower sealing assembly. The airtight channels include a main vent hole, a group of auxiliary vent holes, and an air chamber. The main vent hole extends from the outer edge of the upper or lower sealing assembly into the air chamber. The group of auxiliary vent holes includes several auxiliary vent holes, which extend from the arc-shaped inner edge of the upper or lower sealing assembly into the air chamber.

This utility model discloses an end-face reluctance compensator for a permanent magnet synchronous motor pole-slot combination in an automotive steering system. It includes a moving end piece and a stationary end piece made of soft magnetic material. The moving end piece is welded to the rotor end and has evenly spaced first protrusions on its outer periphery, providing a low reluctance channel for end leakage flux. The weld joint also serves as a dynamic balance weight. The stationary end piece is fixed to the rear end cover of the motor and has evenly spaced second protrusions on its outer periphery, which cooperate with the moving end piece to form a low reluctance leakage flux path. A fixed air gap exists between the two protrusion groups, and a circumferential phase difference is provided. When the moving end piece rotates with the rotor, the relative motion of the protrusion groups generates reluctance modulation, changing the end magnetic circuit distribution to weaken cogging torque. This device has a simple structure, low cost, and is suitable for compact motor designs, improving motor reliability and operational stability. It can achieve cogging torque reduction, end leakage flux reduction, and rotor dynamic balance adjustment.

The utility model provides an erecting cylinder sliding frame type floating supporting device and an erecting vehicle. The supporting device comprises a swing supporting frame and a sliding bracket. The sliding bracket is arranged in a sliding mode relative to the swing supporting frame. The end, extending out of the swing supporting frame, of the sliding bracket is used for supporting an erecting cylinder of the erecting vehicle, and the swing supporting frame is rotationally connected with a chassis transfer frame of the erecting vehicle so that the chassis transfer frame can be rotated in the erecting process of an erecting frame of the erecting vehicle. The erecting cylinder is adaptively supported through sliding of the sliding bracket relative to the swing supporting frame and rotation of the swing supporting frame relative to the chassis transfer frame. The supporting device can adaptively support the erecting cylinder along with rotation of the erecting cylinder.

The utility model provides an erecting cylinder floating supporting device and an erecting vehicle. The supporting device comprises a supporting guide cylinder and a supporting guide rod. The supporting guide cylinder is arranged on the supporting guide rod in a sleeving mode, and the supporting guide rod is arranged in a sliding mode in the axial direction of the supporting guide cylinder. The end, extending out of the supporting guide cylinder, of the supporting guide rod is used for supporting an erecting cylinder of the erecting vehicle, and the supporting guide cylinder is rotationally connected with a chassis transfer frame of the erecting vehicle. And the erecting cylinder is adaptively supported through the axial sliding of the supporting guide rod in the supporting guide cylinder and the rotation of the supporting guide cylinder relative to the chassis adapter frame. The supporting device can adaptively support the erecting cylinder along with rotation of the erecting cylinder.

The invention belongs to the technical field of mechanical energy storage and hydroelectric generation, and discloses a wing-shaped flow guide component for controlling the hydraulic instability of a pump turbine. The pump turbine can stably work under the working condition of turbine power generation and the working condition of water pump water pumping through the wing-shaped flow guide component installed in the draft tube, and spiral vortex strips and pressure pulsation in the draft tube are relieved. The wing-shaped flow guide component in the middle of the straight cone section of the draft tube is connected with the wall face of the draft tube through an anchor chain. The spiral vortex strip enters the flow guide component, firstly, the vortex strip cannot move in the radial direction due to limitation of the wall face, the vortex strip is broken into a large number of small vortex structures after impacting the wall face, secondly, the device separates a dead water area from a main flow area, the vortex strip cannot obtain speed compensation of the main flow area, and therefore the circumferential speed is reduced, and the eccentric distance is reduced. The method can relieve the hydraulic instability of the pump turbine in the power generation working condition and the water pumping working condition at the same time.

The application provides a dehumidifier return air pipe and a dehumidifier, the dehumidifier return air pipe is used for conveying refrigerant from an evaporator to a compressor, and comprises: a first return air section, one end of which is connected with the evaporator, and the other end of which extends towards the compressor; a second return air section, one end of which is connected with the compressor, and the other end of which extends towards the evaporator; and a damping section, which is connected with the first return air section and the second return air section respectively to form a conveying path from the evaporator to the compressor. Wherein, the damping section is provided with a first return bend, a first included angle is formed between the first return bend and the other end of the first return air section, a second included angle is formed between the first return bend and the other end of the second return air section, and the first included angle and the second included angle are 90-110 degrees. The dehumidifier return air pipe can effectively control the conveying speed of the refrigerant, reduce the vibration and noise of the dehumidifier return air pipe during work, and provide a better use experience.

The utility model relates to the technical field of automobile drive shaft, disclose a kind of drive shaft assembly of transmission stability, including drive shaft body and the inner ball cage assembly connected to the one end of drive shaft body, inner ball cage assembly includes inner ball cage shell, end cap and the sliding type universal joint slidingly arranged in inner ball cage shell, end cap is connected to one end of inner ball cage shell, inner ball cage shell is equipped with the track for slidingly installing sliding type universal joint, end cap is equipped with the stop block for stopping sliding type universal joint and sliding off track, the stop block one side is equipped with the stop slope for stopping sliding type universal joint, and the other side of stop block and inner ball cage shell between abutment have the elastic buffer block of buffering.The utility model sets up the elastic buffer block between stop block and inner ball cage shell, effectively solve the vibration and noise problem caused by sliding type universal joint due to axial clearance and hit end cap, reduce the impact force and noise of metal rigid impact, improve transmission stability.