19results about How to "Change vibration frequency" patented technology

The invention relates to the technical field of household appliances, and discloses a pipeline system which comprises a refrigerant pipe, a fixing rubber block, an air pressure adjusting mechanism, a vibration sensor, a compressor frequency determining module and a controller assembly. The controller assembly is connected with the air pressure adjusting mechanism, the vibration sensor and the compressor frequency determining module and used for controlling the air pressure adjusting mechanism to adjust the air pressure of the air bag for fixing the rubber block according to the vibration frequency, detected by the vibration sensor, of the pipeline system and the compressor operation frequency obtained by the compressor frequency determining module. The air pressure of the air bag is adjusted according to the frequencies of the refrigerant pipe and the compressor, so that the vibration frequency of the pipeline system avoids the frequency of the compressor, resonance between the refrigerant pipe and the compressor is avoided, the vibration amplitude of the refrigerant pipe can be effectively reduced, noise is reduced, and the overall stability of the pipeline system is improved. The invention further discloses a control method for preventing resonance of the pipeline system.

The invention relates to the field of circuit boards, and discloses a circuit board production line testing device which comprises a detection box provided with a box door, a first fixing plate is arranged in the detection box, two first sliding columns are connected to the first fixing plate, and a first sliding plate and a second sliding plate are connected to the first sliding columns. The first sliding plate and the second sliding plate are connected through a vibration mechanism, a third sliding column is connected to the bottom of the second sliding plate, a second fixing plate is slidably connected to the third sliding column, a balancing weight is connected to the third sliding column, and the second sliding plate can continuously vibrate in the up-down moving process through power generated when an air pump conveys air; the flexible circuit board is driven to vibrate, so that whether a pseudo soldering welding spot exists on the flexible circuit board or not can be effectively tested, and in the process that the second sliding plate continuously moves up and down, the two hollow extension plates are far away from each other or close to each other, so that the vibration amplitude and the vibration frequency of the flexible circuit board can be effectively changed.

The invention relates to the technical field of household appliances, and discloses a pipeline system which comprises a refrigerant pipe, a fixed rubber block, a rubber block adjusting mechanism, a vibration sensor, a compressor frequency determining module and a controller assembly. The controller assembly is connected with the rubber block adjusting mechanism, the vibration sensor and the compressor frequency determining module and used for controlling the rubber block adjusting mechanism to adjust the hardness of the fixed rubber block according to the vibration frequency, detected by the vibration sensor, of the pipeline system and the compressor operation frequency obtained by the compressor frequency determining module. The hardness of the fixed rubber block is adjusted according to the frequency of the refrigerant pipe and the compressor, so that the vibration frequency of the pipeline system is kept away from the frequency of the compressor, resonance between the refrigerant pipe and the compressor is avoided, the vibration amplitude of the refrigerant pipe can be effectively reduced, noise is reduced, and the overall stability of the pipeline system is improved. The invention further discloses a control method for preventing resonance of the pipeline system.

The invention relates to the technical field of household appliances, and discloses a rubber block for fixing refrigerant pipes, which is used for fixing a plurality of refrigerant pipes and comprises a rubber block main body and an expansion module. The rubber block main body is fixedly connected with a plurality of refrigerant pipes; the expansion module is arranged in the rubber block body and can extrude the rubber block body through expansion to adjust the structural rigidity of the rubber block body. The vibration frequency of the refrigerant pipe can avoid the frequency of the compressor, resonance between the refrigerant pipe and the compressor is avoided, the vibration amplitude of the refrigerant pipe can be effectively reduced, the stress risk of the whole pipeline system is reduced, and the whole stability of the pipeline system is improved. The invention further discloses a pipeline system.

The embodiment of the invention provides a harmonic control method and device of an electric power system and a storage medium, the electric power system comprises a converter for converting direct current into alternating current, and the method comprises the following steps: determining a frequency range of a resonance point of the electric power system; under the condition that the switching frequency of the converter falls into the frequency range, determining a target resonant frequency of the resonant point; determining the type and electrical parameters of a nonlinear device needing to be added by taking the target resonant frequency as an optimization target; and setting the non-linear device in the power system. According to the method, a relatively serious resonance point in a power system is identified, and the vibration frequency of the resonance point of the power system is changed in a mode of increasing a nonlinear device, so that the frequency point of an original resonance source in a circuit is avoided, and the harmonic problem in a specific scene is solved in a low-cost mode; and long-term stable operation of a power system can be ensured.

This invention relates to the technical field of atmospheric control and air treatment, and discloses a waste gas treatment device based on the synergistic effect of low-temperature plasma and catalyst. The device includes a waste gas treatment unit, which sequentially passes waste gas through a plasma ionization zone and a catalytic zone. The plasma ionization zone ionizes the waste gas, while the catalytic zone further oxidizes or decomposes any incompletely degraded intermediate products after passing through the plasma zone. An outlet end is provided on the waste gas treatment unit, and an outlet unit is located at the outlet end. A film-breaking unit, during the waste gas treatment process, drives a permanent magnet ball to rotate, causing the permanent magnet ball to intermittently approach or move away from a spring, thus causing the spring to vibrate and preventing the formation of a gas film on the inner wall of the inlet end, thereby avoiding changes in the inlet end pipe diameter.

An eccentric wheel device capable of adjusting eccentric distance relates to the technical field of eccentric wheels and comprises a return distance adjusting cam, a return distance adjusting gear, a direct current push rod device and the like. The whole eccentric wheel device is driven to move up and down under the combined action of a return stroke adjusting gear, a return stroke adjusting rack and a flat key installed in a key groove, and when a rod hole in a return stroke adjusting fixing rod and a rod hole in a push rod sleeve reach the same axis position, a battery provides power for a direct-current push rod and a forward and reverse rotation controller. The forward and reverse rotation controller is connected with the direct-current push rod device, a push rod of the direct-current push rod device is reversely pushed to rod holes of the return stroke distance adjusting fixing rod and the push rod sleeve through the remote controller, and therefore the return stroke distance adjusting fixing rod is fixed, and the return stroke distance of the whole eccentric wheel is adjusted. And the return stroke distance of the eccentric wheel can be adjusted stage by stage.

The embodiment of the invention provides an air conditioner, a control method and device of the air conditioner and a computer readable storage medium, the air conditioner control method is used for controlling the air conditioner, the air conditioner comprises a fan module and a shock-proof supporting module, the fan module comprises fan blades and a fan motor used for driving the fan blades to rotate, and the shock-proof supporting module is used for supporting the fan blades. The shock-proof supporting module is movably connected with or separated from the fan motor. The air conditioner control method comprises the steps that whether the fan motor has a resonance risk or not is determined; and in response to determining that the fan motor has the resonance risk, controlling the shock-proof supporting module to be connected with the fan motor so as to change the vibration frequency of the fan motor.

The present invention relates to the technical field of level detection, and specifically provides an eccentric tuning fork level switch probe, aiming to solve the problem that the existing tuning fork level switch is difficult to maintain. To this end, the tuning fork level switch provided by the present invention includes a tuning fork, an eccentric pad and a vibrator excitation structure, the eccentric pad includes a pad and an eccentric block, the eccentric block is located on one side of the pad and abuts against the tuning fork; the vibrator excitation structure is located on the side of the eccentric pad away from the tuning fork, and is configured to vibrate the pad, and the position of the vibrator excitation structure vibrating the pad does not overlap with the eccentric block. The vibrator excitation structure, the eccentric pad and the tuning fork abut against each other, so that the vibrator excitation structure, the eccentric pad and the tuning fork can be separated and replaced, reducing the difficulty of maintenance, and the maintenance cost is greatly reduced, and the reliability after maintenance is high.

The utility model discloses a concrete vibrating device, and relates to the technical field of building construction. The device comprises a handle, one end of the handle is fixedly connected with a hose, and the other end of the hose is fixedly connected with a vibrating rod; a driving assembly is arranged in an inner cavity of the vibration rod. The ultrasonic motor is adopted to replace a traditional electromagnetic motor, electromagnetic noise generated by the traditional electromagnetic motor is avoided from the source, meanwhile, the sound control sensor is used for monitoring the noise condition of the surrounding environment in real time, and when the noise exceeds a preset threshold value, a variable-frequency electric appliance in the feedback control assembly feeds back signals according to the sound control sensor; according to the utility model, the signal output to the vibration frequency speed regulation plate is adjusted, and then the current frequency output to the ultrasonic motor is adjusted in real time, and the vibration frequency of the vibration rod is changed, so that the purpose of reducing noise is achieved, the noise can be controlled at a lower level even in high-strength vibration operation, and the influence on the surrounding environment and constructors is greatly reduced.

The invention relates to a corn threshing and winnowing multi-working-condition adjustable parameter detection test bed which comprises a vibration rack, two sets of vibration sliding rails arranged in parallel, a screen, a crank connecting rod driving mechanism and an airflow output air channel. The screen cloth is obliquely arranged, and the two opposite sides of the screen cloth are slidably connected to the two vibration sliding rails correspondingly. The driving end of the crank connecting rod driving mechanism is connected with the screen cloth and drives the screen cloth to reciprocate along the vibration sliding rails. An air outlet of the airflow output air duct is positioned obliquely below the screen and is parallel to the screen; the driving end of the crank connecting rod driving mechanism is provided with a plurality of connecting holes used for being connected with the screen cloth. By arranging a plurality of connecting holes, the screen can be mounted on different connecting holes, the amplitude of the screen can be adjusted, the vibration frequency is changed by changing the rotating speed of the crank connecting rod driving mechanism, the air speed is changed by changing the distance of the air outlet of the air duct, and the problem of multi-parameter working condition simulation test of one test bed is solved.

The utility model discloses a railway line maintenance tamping machine, and particularly relates to the technical field of tamping machines, which comprises a bottom plate, a lifting component is mounted at the top of the bottom plate, a connecting rod is mounted on the bottom plate through the lifting component, a box body is mounted at the bottom of the connecting rod, and a power component is mounted in the box body. A tamping assembly is installed at the bottom of the power assembly, the device is placed at a proper position on a rail, a sliding plate drives a connecting rod and a rubber block to enable a box body to move up and down, and when a main tamping foot and an auxiliary tamping foot are inserted into ballast, a driving motor is started to drive a rotating shaft to enable an oval block to rotate; an elliptical block drives a supporting plate to move up and down under the action of a spring, an electric push rod is started, the electric push rod drives a main tamping foot and an auxiliary tamping foot to be clamped with the help of a fixing rod, and therefore ballast is tamped, the ballast bed buffering capacity is improved, and the vibration frequency can be changed by adjusting the rotating speed of a driving motor and replacing the elliptical block.

Two-section type roasting equipment comprises a placing table, a first rotary kiln and a second rotary kiln are arranged on the upper side of the placing table, a certain height difference exists between the first rotary kiln and the second rotary kiln, a connecting pipe is arranged between the first rotary kiln and the second rotary kiln, the first rotary kiln and the second rotary kiln are both obliquely arranged relative to the placing table, and an independent transmission gear, a wheel belt and a dragging wheel are arranged outside the first rotary kiln. An independent transmission gear, a wheel belt and a tug are arranged outside the second rotary kiln, an elastic baffle is arranged in the middle of the connecting pipe, and a vibration supporting frame is arranged outside the connecting pipe. The first rotary kiln can quickly dry phosphate tailing materials, after the materials enter the second rotary kiln, the high kiln temperature can make the phosphate tailing materials fully heated and react, the baffles at the connecting pipes can prevent the tailing materials from being too light and being blown to the kiln tail by kiln head airflow, and the supporting frame plays a supporting role and also plays a role in drying. And the materials can be conveyed from the first rotary kiln to the second rotary kiln quickly, so that the problem of uniform heating of the rotary kilns is solved, and meanwhile, the problem that mineral powder is easily brought into a dust remover by airflow is solved.

The invention relates to the field of bicycle strength testing, in particular to a bicycle front fork, strength detection equipment and detection method.The detection equipment comprises a base and a detection table elastically installed on the base, the detection table is provided with an insertion base, the insertion base is connected with a claw hook at the bottom end of an outer pipe, and the base is provided with a head pipe clamp; the vibration simulation unit drives the detection table to reciprocate in the vertical direction and comprises a cam and a rotary driver, the cam is in transmission connection with the working end of the rotary driver, and the peripheral side of the cam is attached to the bottom of the detection table; the rotary driver is fixedly installed on the first sliding seat, the first sliding seat is installed on the inclined sliding way in a sliding mode, the inclined sliding way obliquely extends in the direction perpendicular to the cam rotating shaft, and the first sliding seat is connected with the working end of the second linear driver. According to the technical scheme, the second linear driver drives the first sliding seat to drive the cam to reciprocate along the inclined slide way to change the amplitude of the detection table, and the shock resistance of the front fork to vibrations with different intensities is detected.

The invention relates to the technical field of chemical equipment, and discloses a quick assembly device and a quick assembly method of a modular ammonia still tray and an ammonia still system. The quick assembly device comprises a tower body, a maintenance channel, a treatment cover and a push-out mechanism. A tower tray capable of horizontally moving is arranged in the tower body, a maintenance channel with a detachable cover is arranged on the side wall of the tower body, the treatment cover is fixed on the outer wall of the tower body and is communicated with the maintenance channel, and a treatment cavity is formed in the treatment cover; the push-out mechanism is located on the side, opposite to the maintenance channel, of the tower tray in the tower and comprises a pushing block and a driving piece. And when the opening cover is opened, the driving piece drives the material pushing block to push the tray into the processing chamber through the maintenance channel. According to the device, the tray is laterally moved out, so that non-entering type rapid maintenance is realized, the production interruption time is reduced, the safety risk that personnel enter a limited space for operation is avoided, and the maintenance labor intensity is reduced.

The utility model relates to the technical field of engineering machinery cab door sealing, in particular to a loader cab shock absorption and noise reduction structure which comprises a cab body, the cab body comprises a framework, the framework comprises a front side special-shaped stand column, a rear side special-shaped stand column, a top frame and a bottom frame, the front side special-shaped stand column is formed by sequentially connecting nine edges in a surrounding mode, and the rear side special-shaped stand column is formed by sequentially connecting the nine edges in a surrounding mode. Wherein the front-first edge is perpendicular to the front-second edge so as to be matched with a door frame, the front-sixth edge is matched with glass, the front-fifth edge is a bevel edge, the rear side special-shaped stand column is formed by sequentially connecting and enclosing eight edges, the rear-first edge is perpendicular to the rear-second edge so as to be matched with the door frame, the rear-sixth edge is matched with the glass, and the rear side special-shaped stand column is formed by sequentially connecting and enclosing eight edges. The two special-shaped stand columns with different sections are adopted, due to the irregular special-shaped structures of the stand columns, the vibration frequency and the transmission path of sound in the steel pipe are changed, the resonance phenomenon is greatly reduced, and therefore noise is reduced.

The utility model discloses a kind of vibration elimination device and frame, it is related to motorcycle frame technical field, including pipe body, movable moving block is equipped in pipe body interior, the top and bottom of moving block are respectively connected with first buffer and second buffer, when pipe body follows frame vibration, moving block can move along the axial movement of pipe body, to balance the vibration of pipe body, and first buffer and second buffer can telescopic movement, to absorb the vibration energy of pipe body, reduce the vibration amplitude of frame, reduce the vibration energy that car body is passed to driver, improve riding comfort. At the same time, since moving block is installed in pipe body, it does not affect the connecting rigidity of engine and frame, so as not to affect the power transmission efficiency of engine. The outer periphery of moving block is equipped with bushing, the outer periphery wall of bushing is in contact with the inner periphery wall of pipe body, can reduce the moving resistance of moving block, is favorable to improve the response efficiency of moving block, to further balance the vibration of pipe body.

The application relates to the technical field of household appliances and discloses a pipeline system which comprises a refrigerant pipe, a fixed adhesive block, an adhesive block adjusting mechanism, a vibration sensor, a compressor frequency determining module and a controller assembly. The controller assembly is connected with the adhesive block adjusting mechanism, the vibration sensor and the compressor frequency determining module, and is used for controlling the adhesive block adjusting mechanism to adjust the hardness of the fixed adhesive block according to the vibration frequency of the pipeline system detected by the vibration sensor and the compressor operating frequency obtained by the compressor frequency determining module. The hardness of the fixed adhesive block is adjusted according to the frequencies of the refrigerant pipe and the compressor, so that the vibration frequency of the pipeline system is avoided from the frequency of the compressor, resonance between the refrigerant pipe and the compressor is avoided, the vibration amplitude of the refrigerant pipe can be effectively reduced, noise can be reduced, and the stability of the whole pipeline system is improved. The application further discloses a control method for preventing resonance of the pipeline system.

The invention relates to the technical field of turbochargers, in particular to an anti-resonance structure of a turbocharger, a turbulent flow mechanism is arranged at the inlet end of a compressor shell, an outer barrel is connected to a mounting frame, an inner barrel is slidably arranged in the outer barrel, an electric cylinder is arranged between the inner barrel and the mounting frame, and a plurality of round rods are rotatably connected to the side wall of a rotating block in the circumferential direction; guide pieces are fixed to the ends of the round rods, and blades are fixed to the outer ends of the guide pieces. When the turbocharger resonates, the electric cylinder is controlled to stretch out and draw back, and the inclination angle of the blade is adjusted, so that the acting force and direction of the blade on airflow are changed, and the hydrodynamic force direction of the airflow entering the compressor shell is changed. By disturbing airflow, changing the flow state of the airflow, changing the vibration frequency of high-speed airflow, influencing parameters such as rotation resistance of the impeller and changing the rotation speed of the turbine and the rotation speed of the rotating shaft, resonance conditions cannot be established, and resonance is rapidly restrained. By arranging a plurality of connecting rods, a plurality of resonance detection positions are provided, and the anti-resonance effect is improved.