81results about How to "Avoid excessive vibration" patented technology

The invention provides a control method for reducing integral vibration of a double-drum washing machine. The washing machine comprises two washing buckets which are of up-down array structures. The control method has the advantages that a certain quantity of water is fed into one washing bucket to increase the weight of an integral outer drum assembly if only the other washing bucket runs, so that the integral gravity center of the double-drum washing machine can decline, and the amplitude of the integral vibration of the double-drum washing machine can be reduced; loads on the washing buckets are detected to determine the washing bucket with the quantity of loads if the two washing buckets are drained simultaneously, the washing bucket with the low quantity of loads is drained at first while the other washing bucket stalls, and the other washing bucket is used as a counterweight of the first washing bucket to reduce the integral vibration of the double-drum washing machine, and only starts to be drained after the first washing bucket is completely drained; the second washing bucket has the large quantity of loads, the gravity center of the second washing bucket is low, eccentricity of the loads of the second washing bucket can be adjusted easily, and accordingly excessive vibration can be prevented.

A method and apparatus for baling crop materials using a baler with a pickup thereon for picking up crop materials from the ground and moving such crop materials towards a baling chamber. The pickup has a pickup frame operatively attached to the baler, the frame having a plurality of laterally spaced apart tines of a type which is typical for balers. The pickup has a pickup frame operatively attached to the baler, the pickup having a plurality of laterally spaced apart tines of a type which is typical for balers. Plastic bands are provided on at least the surface of bands that are disposed between the tines to reduce friction between the crop and the bands; this prevents excessive vibration, whereby crop material will pass evenly through the pickup, minimizing the possibility of plugging of the pickup and retaining leaves and other desirable parts of the crop.

The invention provides an online monitoring device for power reactor vibration. The device includes a monitoring parameter sensor used for monitoring vibration and voltage and current signals of the power reactor in a work state; a signal processing module used for receiving signals monitored by the monitoring parameter sensor and performing amplification, filtering and synchronous digital-analog conversion processing after performing synchronous acquisition on the signals; a signal data reading module used for real-time reading of vibration and voltage and current signals which undergo the amplification, filtering and synchronous digital-analog conversion processing; a GSM data communication module used for monitoring information, which is read by the signal data reading module in a real-time manner, and forming vibration waveforms and current and voltage waveforms through the information for transmission so as to perform map display and data analysis; and an analysis display and alarm module used for obtaining waveform data of the vibration and waveform data of the current and voltage from the GSM data communication module for rapid anti-aliasing Fourier transform processing and continuous real-time display.

The invention relates to a valve for a piston pump, wherein the valve (22) comprises a valve closure body (10) and a valve seat (26) disposed longitudinally facing to the valve closure body (10); the valve closure body (10) comprises a cylindrical guide section (12) and a hemispheric sealing section (14) longitudinally facing to the cylindrical guide section (10) and facing to the valve seat (26); the sealing section is used for selectively closing and opening a hole (30) enclosed by the valve seat (26); according to the invention, the sealing section (14) comprises at least one channel opening (16) which is located out of the hole (30) enclosed by the valve seat (26) under the state that the valve (22) is closed, and extended into a channel (18) in the valve closure body (10) substantially extending along a flow direction.

The invention discloses an environmentally-friendly textile machine with functions of shock absorption and cotton flock absorption. The environmentally-friendly textile machine with the functions of shock absorption and cotton flock absorption comprises a hydraulic expansion link, an exhaust fan, a booster pump, a shock absorption device, a baseplate and a base, wherein the hydraulic expansion link is used for adjusting the height of the baseplate and further realizes the adjustment of the height of a textile machine body, thereby meeting the using requirements of operators with different height; the exhaust fan is used for causing cotton flocks generated in the working process of the textile machine body to enter a pipeline through an absorption cover and further enter a cotton flock collecting tank, thereby avoiding the problem that the cotton flocks generated in the working process of the textile machine body float in the air to cause pollution and affect the physical health of bodies of operators in the workshops; the booster pump is used for causing water in a water storage tank to pass through a water diversion pipe and then be sprayed from an atomizing spray head so as to humidify the cotton flocks floating in the air in the workshops, thereby causing the cotton flocks floating in the air in the workshops to fall on the ground under the action of gravity.

The invention relates to a paper that disintegrates quickly in water, for use as a filter material or filter wrapper paper of a cigarette filter. At least 80 wt % of the paper is formed by cellulose fibers. Of the cellulose fibers, at least 80 wt % are a mixture of long fiber pulp and mercerized pulp. 0 to 90 wt % of the content of the mixture is formed by mercerized pulp, and the rest is formed by long fiber pulp. The cellulose fibers of the mixture have a freeness of at most 30° SR according to ISO 5267. In the disintegration test using an apparatus as described in TAPPI T 261, the paper exhibits a disintegration of at least 60% after 30 seconds.

The invention provides a centrifugal filtration apparatus for algal water and with self-cleaning function. The centrifugal filtration apparatus comprises a water inlet pump, a filter box, a water outlet pipe and an algae outlet pipe. An algal water separating device is arranged between the water inlet water pump and the filter box, and comprises a base, a base support, a power part, an algal waterfiltering unit and a cyclically flushing unit, wherein the base support is provided with the power part; and the algal water filtering part is installed on the upper part of the base, connects with the filter box via a pipeline and rotates under the driving of the power part so as to realize centrifugal filtration of algal water in the centrifugal filtration apparatus. The centrifugal filtrationapparatus may be a rotatable mechanism of a cylindrical shape, a cone shape, a fusiform shape or the like; the cyclically flushing device capable of cyclic flushing of the algal water filtering deviceis erected on the upper part of the algal water filtering device; the centrifugal filtration apparatus can realize centrifugal separation of the algal water and self-cleaning, and a cleaning system can cyclically use separated clear water; and the centrifugal filtration apparatus greatly saves water resources and power resources, is convenient to operate and low in cost, and is especially applicable to large-scale algal water filtering in medium-sized and large lakes and reservoirs.

A crankshaft comprising a cheek, a torsion-absorbing pendulum pivotally coupled to the cheek, and a rotational speed actuated brake to oppose motion of the pendulum relative to the cheek. The brake is configured to provide greater opposition to the motion at lower rotational speeds than at higher rotational speeds.

The invention relates to a humidification temperature-controlled oscillation type hybridization device. The humidification temperature-controlled oscillation type hybridization device comprises a base, an upper cover, a lower heating plate and an upper heating plate, wherein the upper cover is matched with the base, the lower heating plate and the upper heating plate are respectively arranged on the base and the upper cover, and a heating cavity is formed by the upper cover and the base; and the humidification temperature-controlled oscillation type hybridization device is characterized in that the base is provided with a functional rack, the bottom part of the functional rack is connected with an oscillation motor and a controller which is in signal connection with the oscillation motor, the heating cavity is internally provided with a humidification device, the humidification device is in signal connection with the controller, the lower heating plate and the upper heating plate are in signal connection with a temperature control device, and the temperature control device is in signal connection with the controller. The humidification temperature-controlled oscillation type hybridization device disclosed by the invention has the beneficial effects that through the action of a humidification control device, the temperature control device and the oscillation motor, the purposes that the humidification can be continuously carried out within relatively-long time, the humidity can be regulated in real time according to test needs, and the oscillation can be simultaneously generated according to the test needs can be achieved by the humidification temperature-controlled oscillation type hybridization device, and the hybridization efficiency and the hybridization quality can be increased.

A washing machine having balancers and a method of controlling the same is provided. The number of rotations of a motor is maintained at a designated number before excessive vibration of a tub occurs for a designated time in order to prevent excessive vibration of the tub before balls reach a balancing position. The method includes sensing the number of rotations of a motor; determining whether or not the sensed number of rotations of the motor reaches a designated number of rotations by comparing the sensed number of rotations of the motor with the designated number of rotations; and controlling the motor such that the number of rotations of the motor is maintained at the designated number of rotations when it is determined that the sensed number of rotations of the motor reaches the designated number of rotations.

The invention provides a method for avoiding excessive vibration of an undercarriage in an overhead state, which is characterized by comprising the following steps: 1, simulating the rotating excitation of an airplane wheel of the undercarriage by using an eccentric runner, wherein the frequency of the rotating excitation changes with time; 2, changing the eccentric mass M3 of the eccentric runner, and simulating the change of a vibration excitation amplitude; 3, simulating main movement rules of the undercarriage by using a 2-DOF (Degree Of Freedom) model; and 4, changing and matching mass blocks M1 and M2 and springs K1 and K2 so as to realize the design of natural vibration frequencies f1 and f2 of the first and second orders of the undercarriage structure.

The invention discloses a reciprocating rotation excitation stand system which is characterized in that a reciprocating rotation excitation system is composed of a linear actuating vibration table, a motion conversion device, and a turning torque rising device, the motion conversion device converts the vertical reciprocating linear excitation formed by the linear actuating vibration table into vertical reciprocating rotation excitation, the turning torque rising device converts the vertical reciprocating rotation excitation into horizontal reciprocating rotation excitation, the torque and the rotation travelling of the horizontal reciprocating rotation excitation can be increased and reduced in the turning torque rising device, and an excitation control module measures the vibration amplitude and the linear exciting force of the reciprocating rotation excitation system at the same time. The reciprocating rotation excitation stand system is suitable for the characteristic test of a large-torque limited angle actuator and can perform the vibration control experiment test based on passive / active / half-active rotary actuator.

The invention relates to the field of water turbines, in particular to a flow-mixing type rotating wheel capable of preventing blockages. According to the technical scheme, the flow-mixing type rotating wheel capable of preventing the blockages comprises an upper crown, a lower ring and a plurality of flow-mixing blades, wherein the plurality of flow-mixing blades are connected between the upper crown and the lower ring; a driving mechanism is arranged between every two adjacent flow-mixing blades, the driving mechanisms are arranged on the upper crown, the output ends of the driving mechanisms are connected to rotating shafts, and the other ends of the rotating shafts are connected to the flow-mixing blades through bearings, and the rotating shafts are connected to crushing devices used for crushing sundries between adjacent flow-mixing blades. According to the flow-mixing type rotating wheel, the blockages are prevented, and the problem that the flow-mixing type rotating wheel of anexisting water turbine is prone to being blocked by foreign matters is solved.

A method and apparatus for controlling an operation of a washing machine including, a motor driving unit configured to drive a motor and cause a drum to rotate and a control unit configured to control the motor driving unit to (i) rotate the drum after completing a primary spin cycle, and (ii) stopping rotation of the drum and / or the driving the motor immediately when the rotational speed of the motor reaches a preset value.

The invention relates to a load-pressure-controlled fees flow regulator ( 1 ) for adjusting the feed volume of an adjustable hydraulic pump ( 2 ) which feeds in a working line ( 3 ). The load-pressure-controlled feed flow regulator ( 1 ) has an adjusting device ( 5 ) for adjusting the feed volume of the hydraulic pump ( 2 ). The adjusting device ( 5 ) is acted on with an adjusting pressure in order to adjust the feed volume of the hydraulic pump ( 2 ). The level of the adjusting pressure is generated by an adjusting pressure regulating device ( 17 ). In addition to the adjusting pressure regulating device ( 17 ), the fees flow regulator ( 1 ) has a damping device ( 30 ).

The invention discloses a filter bag reinforced self-cleaning type centrifugal machine. The filter bag reinforced self-cleaning type centrifugal machine comprises a shell, a rotary drum arranged in the shell, a power device arranged in the shell for driving the rotary drum to rotate and a filter bag located in the rotary drum, wherein the outer wall of the filter bag clings to the inner wall of the rotary drum; the structure of the power device for driving the rotary drum to rotate is arranged into one comprising a main shaft, a lifting shaft, a lifting cover, a first driving mechanism and a second driving mechanism; by arranging the structures of the main shaft, the lifting shaft, the lifting cover, the first driving mechanism and the second driving mechanism, in the process of driving the rotary drum and the filter bag to synchronously rotate, the filter bag can be pulled to shrink and stretch, and accordingly, materials attached to the wall of the filter bag directly fall off, so that the purposes of realizing filter bag self-cleaning and improving the centrifugal effect are achieved; and at the same time, a plurality of reinforcing strips are arranged on the outer surface of the filter bag so as to improve the tensile strength of the filter bag, and the filter bag can closely cling to the inner wall of the rotary drum after being reset.

A washing machine having balancers and a method of controlling the same is provided. The number of rotations of a motor is maintained at a designated number before excessive vibration of a tub occurs for a designated time in order to prevent excessive vibration of the tub before balls reach a balancing position. The method includes sensing the number of rotations of a motor; determining whether or not the sensed number of rotations of the motor reaches a designated number of rotations by comparing the sensed number of rotations of the motor with the designated number of rotations; and controlling the motor such that the number of rotations of the motor is maintained at the designated number of rotations when it is determined that the sensed number of rotations of the motor reaches the designated number of rotations.

The invention relates to a control valve 1), in particular an angle control valve and double control valve, for extreme control applications, preferably for discharge or reduction for hot separators and vacuum distillation columns. The valve piston 12 and the valve head 13 are designed as one piece and consist of tungsten carbide. Furthermore, the control valve comprises different constructions across the entire control valve range. For example, the valve housing 100, the valve seat 6 and a packing retainer 14 are optionally shaped such that the inner hollow space tapers continuously from the valve inlet to the valve seat 6, which prevents evaporation upstream of the valve seat 6. Furthermore, the double control valve consists of a large sub-valve 36 and at least one small sub-valve 37, wherein the large sub-valve 36 is designed as an adjustable open-closed piston valve and the small sub-valve 37 is designed as a control valve.

The invention provides an automatic paper feeding device. The device comprises a paper taking module and a floating vibration absorption structure arranged on a paper inlet. The paper taking module is provided with a paper taking roller, and a paper separation roller. When the paper taking module is rotated to the paper taking position, the paper taking roller is contacted with the floating vibration absorption structure to ensure that paper is fed into the automatic paper feeding device. By arranging the floating vibration absorption structure, the impact force on the paper inlet and noise produced when the paper taking roller takes paper are reduced.

The present disclosure relates to a washing machine and a method for controlling the washing machine. The washing machine may include a tub, a vibration sensor provided at the tub, a drum accommodating laundry therein and provided to be rotatable in the tub, and a controller configured to measure a value regarding multi-axis vibration occurring in the tub with the vibration sensor at a detection section in which the drum rotates at a specific rotational speed during a dewatering process, determine a predicted value of maximum vibration displacement expected to be generated in the tub based onthe measured value, and determine whether to initialize the dewatering process at the detection section based on the determined predicted value of the maximum vibration displacement and a predetermined reference value.

A low-vibration insurance structure for a 2P high-speed copper bar rotor, relating to the technical field of high-voltage motor components, in particular a low-vibration insurance structure for a 2P high-speed copper bar rotor, which includes a copper bar rotor, and the left and right ends of the copper bar rotor The left fan and the right fan are respectively connected. The copper bar rotor is provided with a number of rotor copper bars. The rotor copper bars penetrate a rotor iron core and are hammered and tightened axially along the entire length of the iron core. The rotor The two ends of the copper bar are brazed with one end ring respectively, the outer end faces of the two end rings at the left end of the copper bar rotor are fastened to the left fan, and the outer end faces of the two end rings at the right end of the copper bar rotor are fastened to the The right fan, the left fan and the right fan have the same structure and the opposite direction of rotation, the left fan and the right fan all sequentially include a fan plate, fan blades and a fan pressing ring. The invention successfully solves the long-term vibration problem caused by the instability of the 2P high-voltage high-speed copper bar rotor motor under dynamic and thermal conditions during high-speed operation.

The invention discloses multifunctional automatic sun umbrella processing equipment. The multifunctional automatic sun umbrella processing equipment comprises a base and a material containing box. The material containing box is arranged on one side of the base. A cutting device capable of completing cutting processing through lifting is arranged on the side, away from the material containing box, of the upper surface of the base. A downward pressing structure capable of downwards pressing and clamping umbrella columns is arranged at the lower end of the cutting device. A conveying structure capable of helping directional conveying of umbrella column sections is arranged at the position, located between the material containing box and the cutting device, of the upper surface of the base. A discharging structure capable of achieving uniform and stable discharging is arranged above the material containing box and is in structural cooperation with the conveying structure. The multifunctional automatic sun umbrella processing equipment effectively solves the problems that in the prior art, due to vibration, cutting openings are deformed, and discharged materials cannot be orderly placed; and the umbrella columns can be fixedly clamped through the downward pressing structure, it is guaranteed that the cutting openings are orderly, the cut umbrella column sections can be orderly placed, and the umbrella column processing efficiency is greatly improved.

The invention discloses a production technology for a diamond thin-wall drill base body. The production technology comprises the steps that firstly, pipe body machining is conducted, wherein a, plate tailoring is conducted, the length and the width of a pipe body are calculated, and discharging is conducted through a plate shearing machine; b, pipe rolling is conducted, and plate rolling forming is conducted on a plate through a four-roller pipe rolling machine; c, welding is conducted, an argon arc welding machine is adopted for spot welding, then wire filling is conducted through the argon arc welding machine for outer circle welding, and then the argon arc welding machine is adopted for inner hole welding; d, shaping is conducted, and a shaping machine is adopted for roundness shaping; and e, circle correcting is conducted, a linear axial circle correcting machine is adopted for circle correcting, and the roundness of the pipe body is technically required to be within 0.3 mm; and secondly, pipe body and connector disc welding is conducted, the position of a welding head of the argon arc welding machine is adjusted, the welding head corresponds to the connecting position of the pipe body and the connector disc, and pipe body and connector disc welding is conducted. According to the production technology, the machining efficiency is high, time is short, losses are low, concentricity is high, the yield is increased, and the service life is prolonged.

The invention discloses an arc suppression overvoltage protection device, and belongs to the field of on-off arc suppression overvoltage protection. A fast on-off arc suppression overvoltage protection device includes a protection body. An upper support plate is fixedly connected to the bottom side of the protection body. The upper support plate is connected to a lower support plate through a buffer spring. A space between the upper support plate and the lower support plate is filled with thermoplastic buffer rubber. The thermoplastic buffer rubber can be heated to be softened in order to improves the shock absorption and buffering effect of the fast on-off arc suppression overvoltage protection device, achieve effective shock absorption, and prevent excessive vibration. In addition, a hole-type semiconductor and an electron-type semiconductor are disposed at one end in a cooling and dust removal ventilation box to absorb heat, thereby effectively lowering the temperature of the cooling water. Cold air is delivered into the protection body through an air blower to decrease the temperature, thereby effectively achieving shock absorption and prolonging the service life, effectively preventing the accumulation of dust and excessively high temperature, and effectively improving work efficiency.

The embodiment of the invention provides a breaking control method of an excavator, a controller of the excavator and the excavator, and relates to the technical field of engineering machinery. The breaking control method of the excavator comprising the steps of obtaining a signal characterizing the position relationship between a breaking hammer body and a drill rod; and controlling an oil line system according to the signal, and thus enabling a power oil cylinder to be in a floating state. In the breaking process, the position between the breaking hammer body and the drill rod changes, the fact indicates that the drill rod contacts an object to be broken, such as stone. At the moment, the power oil cylinder is in the floating state, the power oil cylinder does not provide power to a working arm, and the working arm falls under the action of gravity and compacts the drill rod by gravity, so that the method solves the problems that no hit or excessive vibration exists and a crawler belt is jacked up as the drill rod does not fall in place or falls too much due to improper operation.

The invention discloses an oscillating lens module and a projector. The oscillating lens module includes a frame, a first coil, a lens, and a second coil. The first coil and the second coil are connected to the frame and located in a magnetic field, wherein the first coil and the second coil are adapted to be electrified and to oscillate about a first axis and a second axis respectively via the magnetic field. The lens is connected to the first coil, wherein the lens is adapted to oscillate along with the first coil. An oscillation phase of the second coil is opposite to an oscillation phase of the first coil, such that forces applied on the frame by the first coil and the second coil are counterbalanced, so as to prevent the oscillating lens module from over vibrating which makes projection images shake and makes noise.

The invention discloses a rapid filtration device for interior decoration coating processing in the technical field of coating filtration equipment. The rapid filtration device comprises a base, wherein two groups of supporting rods are arranged on the base; a filtration drum is arranged in the two groups of supporting rods; a rotating seat is arranged on the drum wall of the filtration drum; theend parts of the supporting rods are inserted into the rotating seat; the upper end of a drum opening of the filtration drum is provided with a drum cover in a hinged manner; an insertion end is arranged in the center of the top of the drum cover; a sliding rail slot is formed in the inner drum wall of the filtration drum; and a stirring inner drum is arranged in the inner cavity of the filtrationdrum. The rapid filtration device is convenient for inserting a stirring rod for stirring during filtration of a coating, accelerating the dissolving of non-dissolved raw materials and preventing impurities from blocking a filtration net, so that the filtration speed is increased; through the arrangement of shock absorption feet, extremely high vibration during stirring is avoided; the drum coverprevents sputtering during stirring; the stirring inner drum can implement filtration and stirring and is convenient to take out and clean, so that the blockage of meshes due to long-time use of thefiltration net is avoided.

The invention discloses a platform-based high-grade automobile charging device capable of moving at any time. The platform-based high-grade automobile charging device comprises a charging pile body, wherein a first control switch is installed on the front surface of the charging pile body in an embedded mode, and a charging pile is fixed and moved through the matching use of a first electric telescopic rod and a second electric telescopic rod; when the charging pile needs to be fixed, the first electric telescopic rod is extended to the maximum extent, a supporting column is in contact with the ground, so that the function of stabilizing the charging pile is realized; and when the charging pile needs to be moved, the second electric telescopic rod is extended until idler wheels are in contact with the ground, the first electric telescopic rod is then retracted, and the charging pile is moved by using working of a biaxial motor; the outer surface of the first electric telescopic rod issleeved with a spring in a connection mode, so that the charging pile body can be conveniently protected; a damping seat is arranged inside a supporting seat, so that the damping effect can be conveniently increased; and by arranging a rotating shaft, a winding roller, a handle and the like, a charging wire can be conveniently wound on the winding roller, and the other end of the charging wire isarranged on a groove, so that the charging wire can be conveniently tidied up and protected.