42results about How to "Change the amplitude" patented technology

A backpack type small berry picking machine comprises a back frame, a miniature gasoline engine, a centrifugal type clutch, a steel wire flexible shaft, a secondary gear drive mechanism, an eccentric vibration mechanism, a housing, a front annular handle, a rear handle, and branch vibrators; the miniature gasoline engine is arranged on the back frame through a vibration isolation rubber pad; an output shaft of the miniature gasoline engine is connected with an input end of the steel wire flexible shaft through the centrifugal type clutch; a square joint of the output end of the steel wire flexible shaft is connected with a square interface of an axle drive bevel pinion of the secondary gear drive mechanism; the eccentric vibration mechanism comprises an upper crank, a lower crank, an eccentric adjustable camshaft, a dual-face guide rail, an upper reciprocating oscillating lever and a lower reciprocating oscillating lever; the branch vibrators are respectively fixed on the front ends of the upper and lower reciprocating oscillating levers; the front portion and rear portion of the housing are respectively provided with a front annular handle and a rear handle; the rear handle is provided with a speed regulator; the speed can be regulated so as to allow the small berry branches to generate different frequency vibrations, and the vibration force can separate the small berries from the branches.

The invention relates to a vibrating sieve, in particular to a flexible horizontal vibrating sieve. Balancing weights are arranged on an eccentric shaft, the eccentric mass change of the eccentric shaft is achieved, the vibrating form is flexible, and the amplitude is more flexible and changeable. The balancing weights with different masses can be selected to vibrate according to the type of ore,and thus the motion track can be switched between the straight line and the oval. Vibration exciters are arranged in different places on a sieve box, thus amplitude of the device at different positions can be adjusted slightly, and thus the device is applicable to different use occasions. The installing angle of the horizontal vibrating sieve is between -10 DEG C and +10 DEG C, the installing angle of the device is more flexible, and the suitable installing angle is selected according to the needed ore falling speed. The horizontal vibrating device is simple in structure, easy to assemble anddisassemble, convenient to debug and maintain, and capable of adapting to different working conditions.

The invention discloses a parallel mechanism based single drive one-translation two-rotation three-dimensional sand filling vibration-compaction machine. The machine comprises a fixed pedestal, a movable platform, a driving branch chain I and a driven branch chain II; the driving branch chain I and the driven branch chain II are respectively positioned at the left and right sides of the fixed pedestal; the two ends of the driving branch chain I are respectively connected to the fixed pedestal and the movable platform; the two ends of the driven branch chain II both are connected to the fixed pedestal; and the driven branch chain II is connected to the movable platform via a rotation pair R2. When a single drive is applied to the driving branch chain I, the movable platform can simultaneously carry out a three-dimensional vibration form of vertical vibration, deflection vibration and pitch vibration; the vibration-compaction machine has the characteristics of single input and multiple outputs, and is simple in structure, convenient in manufacturing and maintenance, energy-saving and reliable; through regulating a displacement drive on a moving pair, the vibration frequency and amplitude of the vibration platform can be changed; and by combining with a sand filling process, the fuse sand filling compactness is improved, and the fuse production efficiency is improved.

The invention discloses an electric toothbrush, which comprises a main body part and a brush head, wherein the main body part and the brush head are flexibly connected through a movable part, and theelectric toothbrush further comprises a motor; a steel wire, wherein the first end of the steel wire is connected to the output shaft of the motor, and can rotate along with the output shaft; and an eccentric shaft arranged inside the movable part, wherein the first end of the eccentric shaft is connected to the second end of the steel wire, and rotates along with the steel wire, the second end ofthe eccentric shaft is connected to the movable part in the manner of the radial moving of the movable part along with the second end of the eccentric shaft, the steel wire has at least a bending section, and the bending section is defined in the same plane. According to the present invention, the steel wire with the structure is arranged between the eccentric shaft and the motor so as to changethe axial position and the radial position of the eccentric shaft, such that the vibration frequency and the vibration amplitude of the brush head are changed so as to meet different requirements on vibration.

The invention discloses a modulation type piezoelectric loudspeaker, a loudspeaker system and a control method thereof and relates to the technical field of loudspeakers. The modulation type piezoelectric loudspeaker comprises a casing, a sound production piezoelectric piece, a sound production vibrating diaphragm and a piezoelectric valve, wherein the sound production piezoelectric piece and the sound production vibrating diaphragm are combined together. The sound production piezoelectric piece is used for driving the sound production vibrating diaphragm to generate oscillation air flow under the driving of audio driving electrical signals; and the piezoelectric valve is used for moving under the driving of control driving electrical signals so as to open or seal an air outlet of oscillating air flow or adjust the opening degree of the air outlet. The loudspeaker system and the loudspeaker system control method are provided. According to the modulation type piezoelectric loudspeaker, the opening and closing of the air outlet of the oscillating air flow generated by the sound production vibrating diaphragm and the size of the air outlet are controlled through the opening and closing of the piezoelectric valve, so that frequency of sound signals output by the loudspeaker is changed, high-fidelity replayed sounds are obtained while enough output air flow quantity is guaranteed, the structure is simple and reliable, the area of the piezoelectric piece does not need to be increased, and miniaturization is achieved easily.

The invention relates to the field of classified screening equipment, in particular to a vibrating screen with various vibrating tracks. The vibrating screen with various vibrating tracks comprises atop rack, a bottom rack and a sieve box. First sliding rods are arranged on opposite faces of the top rack and the bottom rack and located at the two ends of the sieve box separately. First sliding blocks are slidably arranged on the first sliding rods separately. Every two first sliding blocks arranged on the top rack and the bottom rack and located at the same end of the sieve box are connectedthrough a second sliding rod. Second sliding blocks are slidably arranged on the two second sliding rods separately. The two ends of the sieve box are fixedly connected with the two second sliding blocks separately. A partition plate dividing an inner cavity of the sieve box into an upper chamber and a lower chamber is arranged in the sieve box. An exciting device is arranged in the lower chamberof the sieve box. A sieve plate is arranged in the upper chamber of the sieve box. The vibrating screen has various vibrating tracks and can be conveniently controlled and adjusted in various vibrating tracks so as to adapt to screening production.

The invention discloses a novel mounting structure of a rubber spring of a vibration screen and a method for replacing the rubber spring. The novel mounting structure has the characteristics of variable stiffness and easy replacement. The structure mainly comprises an upper supporting plate, a lower supporting plate, main rubber springs, secondary rubber springs, pressing plates and first high-strength bolts, wherein the upper supporting plate is fixed to a screen box; the main rubber springs are positioned between the upper supporting plate and the lower supporting plate; the secondary rubber springs are positioned above the upper supporting plate and corresponding to the main rubber springs, and the pressing plates are positioned above the secondary rubber springs; the pressing plates, the secondary rubber springs, the main rubber springs, the upper supporting plate and the lower supporting plate are integrally connected through the first high-strength bolts. The novel mounting structure is reasonable, and convenient to dismount and replace, facilitates equipment repair, and can prolong the service life and improve the usage efficiency of equipment; meanwhile, the supporting stiffness of the screen box can be adjusted by changing the stiffness of the secondary rubber springs, so as to meet the amplitude requirements of different working conditions.

The invention relates to a magnetic-inductive flowmeter for measuring the flow rate of a flowing conductive medium with a measuring tube which consists of a nonconductive material, with a magnetic field generating apparatus for generating an especially changing magnetic field which permeates the measuring tube essentially perpendicular to the longitudinal axis of the measuring tube, with two measuring electrodes which are especially conductively coupled to the medium for tapping a measuring-circuit voltage which has been induced in the flowing medium and with a measuring device for detecting an empty tube, the measuring electrodes being located along a connecting line which runs perpendicular to the longitudinal axis of the measuring tube and perpendicular to the direction of the magnetic field. The measuring device for detecting an empty tube is made as an admittance measuring device which has a detector, a counter-electrode, an ac signal source and an evaluation unit, the detector having an electrode which is connected to the ac signal source so that the electrode can be loaded by an ac signal and furthermore the electric field extends from the electrode to a medium. The electrode of the detector and the counter-electrode are made planiform and are located essentially opposite one another on the outer surface of the measuring tube, the electrode of the detector being located above and the counter-electrode being located underneath the longitudinal axis of the measuring tube.

The present invention relates to an ultra sensitive in-situ magnetometer system, and more particularly to an ultra sensitive in-situ magnetometer system that can in-situ monitor a magnetic moment of a magnetic thin film with sub-monolayer precision while depositing and growing the magnetic thin film in an ultra high vacuum (UHV) chamber.

The invention discloses an automobile tire vibration excitation device and method for an automobile in an amplitude adjustable running state. The device comprises a vibration excitation device body, a transmission mechanism and a tightening mechanism, the vibration excitation device body comprises a crank shaft, an upper push rod, a lower push rod and a carrier table, the crank shaft capable of structurally rotating is mounted in a lower box, a lead screw guide rail mechanism can be mounted below each individual vibrating table in order to move the vibrating table, the distance between the vibrating tables is changed by rotating lead screws, a motor is connected with the vibrating tables in a belt transmission manner, belt transmission can loose and generate slip after the distance between the two vibrating tables is shortened, the motor can be mounted on a lifting table in order to avoid slipping and tension a conveyor belt again, the conveyor belt is stretched by changing the height of the motor, and the automobile tire vibration excitation device can normally run.

Various embodiments relate to a circuit arrangement for operating at least one discharge lamp (LL). In order to prevent intrinsic flicker at low dimming settings and low temperatures, according to various embodiments, a direct current which is fed into the discharge lamp so as to avoid striated discharges at relatively high dimming settings is reduced or entirely eliminated. In adddition, the invention also relates to a corresponding method which is used to operate at least one discharge lamp.

The invention discloses a dual-drive full-frequency bone conduction loudspeaker, and relates to the technical field of bone conduction audio transmission. The problems of lack of sound low-frequency output and high F0 value are solved. The dual-drive full-frequency bone conduction loudspeaker specifically comprises a magnet part, a sound body part and an elastic sheet supporting assembly part, themagnet part comprises U-shaped iron, a magnet, a washer sheet, an auxiliary magnet and an auxiliary washer sheet, and the U-shaped iron, the magnet, the washer sheet, the auxiliary magnet and the auxiliary washer sheet adopt a double-magnetic-circuit design; the voice body part comprises a voice coil, a fixing frame, an auxiliary voice coil and an auxiliary fixing frame. According to the invention, the structural design characteristics of double voice coils and double magnetic circuits are adopted; the vibration amplitude of the product can be increased; therefore, the sensitivity of sound and the effect of bass are effectively improved, the bass of the product is thicker and more comfortable, the elastic sheet supporting assembly part adopts a suspension supporting design, and the connected elastic sheet can be designed and modified according to requirements so as to change the amplitude of the elastic sheet supporting assembly part in the cavity and achieve the effect required by aclient.

The invention relates to a device for controlling a resonant ultrasound piezoelectric stage (1), including: a first stage (2) of increasing a DC voltage (VBATT) to an intermediate DC voltage (Vinter), a second modulation stage (3), including an inductor (Lp) connected to the intermediate DC voltage and a first switching transistor (M) for selectively controlling a phase of charging the inductor and a phase of transferring the energy stored in the inductor in response to a first stream of command pulses (Vl), to generate an excitation voltage (VE) of the piezoelectric stage, characterised in that the second stage includes a second switching transistor (M') connected in series between the drain of the first transistor and a terminal of the inductor, suitable for limiting the energy stored in the inductor during the charging phase in response to a second stream of command pulses (V2), so as to reduce the amplitude of the excitation voltage.

The invention discloses a vibratory separation test bed for pedicels of wine grapes. The vibratory separation test bed comprises a frame, a vibration mechanism, a data collector, a sensor, a fixing ring and an air pump. The vibration mechanism drives grape vines to vibrate, the fixing ring comprises a first semi-ring, a second semi-ring, air bags, a locking mechanism and a sliding part, the first semi-ring and the second semi-ring are each internally provided with one air bag, and the air pump is installed on the frame and inflates the air bags; an arc-shaped groove in a circumferential direction is formed in the outer arc surface of the first semi-ring, the sliding part comprises an arc-shaped plate, a transverse plate and a vertical plate, the two ends of the transverse plate are connected with the arc-shaped plate and the vertical plate respectively, the transverse plate penetrates through the arc-shaped groove, the vertical plate is used for installing the sensor, and the sensor is connected with the data collector. According to the vibratory separation test bed for the pedicels of the wine grapes, the sensor is installed by the fixing ring with the air bags, the sensor can be mounted and dismounted through inflation and deflation of the air bag, operation is convenient, time and labor are saved, the sensor can adapt to the grape vines in any shape, and mechanical damage to the grape vines is avoided.

The invention discloses a method and device for having control over vibration strength, and relates to the technical field of electromotor application. The method and device for having control over the vibration strength can achieve control over the vibration strength of a device in a low-cost mode. The method for having control over the vibration strength comprises the steps of (1) detecting the type of a received control signal, wherein the control signal comprises a positive control signal or a negative control signal; (2) increasing the distance between a rotary shaft of an eccentric electromotor and the gravity center of a cam when the received control signal is the positive control signal, wherein the increased distance is an assigned value; (3) reducing the distance between the rotary shaft of the eccentric electromotor and the gravity center of the cam when the received control signal is the negative control signal, wherein the reduced distance is an assigned value. The method and device for having control over the vibration strength is beneficial to having control over the vibration strength of the device with the eccentric electromotor.

The invention discloses a fixing chuck of a plastic pipeline cutting machine. The fixing chuck structurally comprises a fixing part, a cutting sleeve, a motor, a protective cover, a control button and a supporting frame, wherein the fixing part is movably matched with the interior of the cutting sleeve, the cutting sleeve is matched with the interior of the protective cover in a nested mode, the left side of the protective cover is fixed to the motor through a bolt, the motor is movably matched with the interior of the cutting sleeve, the lower end of the cutting sleeve is fixed to the surface of the supporting frame through bolts, the upper surface of the supporting frame is hinged to the lower end of the protective cover, and the fixing part comprises a clamp, a crank handle, a carrying frame, a protective plate and a pipe groove. According to the invention, the plastic pipeline is supported through the pipe frame, shock absorption is performed through pressure reducing seats on the two sides while the plastic pipeline is supported, so that the vibration force generated during cutting is counteracted, a supporting rod and an air pressure cavity of the supporting rod are buffered under the cooperation of a cushion block, the vibration amplitude is changed, vibration generated during cutting is effectively counteracted, and the problem that the cutting precision is not high due to the fact that the upper end frame pipe base shakes is solved.

The invention discloses a loudspeaker with optimized audio frequency, belonging to the technical field of loudspeakers. The essential technical scheme is that the loudspeaker with the optimized audio frequency comprises an annular magnet, a T-iron and a voice coil, wherein the lateral side of the annular magnet comprises at least three groups of interpole coils for producing complementary field, and the magnetic field produced by each group of the interpole coils basically has the same intensity and is evenly distributed along the lateral side of the annular magnet. The invention has simple structure, can improve loudspeaker acoustic effect, and is used in audio signal playing.

The invention provides an amplitude variable screening device based on a planar linkage mechanism. The amplitude variable screening device based on the planar linkage mechanism is composed of a material feeding part, a material screening part and a driving control part. A screening box of the material screening part is located below a material feeding device, one end of the screening box is connected with a triangular support through a fixed-point hanging rod, the other end of the screening box is hinged to a moving-point hanging rod, the moving-point hanging rod is connected with a control connecting rod, and the control connecting rod is connected with an output shaft of a control motor. The bottom of the screening box is hinged to a drive connecting rod, the drive connecting rod is hinged to a drive crank, and the drive crank is connected with an output shaft of a screening box drive motor. The driving control part comprises a drive motor controller and a control motor controller, the screening box drive motor is connected with the drive motor controller, and the control motor is connected with the control motor controller. According to the amplitude variable screening device based on the planar linkage mechanism, the amplitude of the front end of the screening box is changed by adjusting the hanging positions and the initial dip angles of a front-arranged hanging rod of the screening box in real time, and the situation that materials are stacked at the front end of the screening box when the feeding amount of the materials changes is avoided.

The invention discloses a rotary classifying screen with adjustable amplitude and inclination angle. The rotary classifying screen comprises a screen drum, supporting frames and a vibrating device; the screen drum is rotatably installed between the two supporting frames through a rotating shaft; the vibrating device is located below the screen drum, and the vibrating device makes contact with the head end of the screen drum; and the tail end of the screen drum is connected with an amplitude and inclination adjusting mechanism. When the rotary classifying screen is used, a lead screw can be driven to rotate by starting a motor, so that a sliding block is driven to move up and down, the inclination angle of the screen drum is adjusted, initial extrusion force on a damping spring is different due to the fact that the inclination angle of the screen drum is different, therefore, the initial compression length of the damping spring is changed, and the amplitude of the screen drum during vibration is changed.

The invention discloses a double-layer independent shock excitation screening device used for shield construction muck treatment. The device comprises an equipment installation support. An upper-layerbox body and a lower-layer box body are arranged on the equipment installation support. The bottom of the upper-layer box body communicates with the top of the lower-layer box body, an upper-layer screen and an upper-layer excitation motor are arranged in the upper-layer box body, a lower-layer screen and a lower-layer excitation motor are arranged in the lower-layer box body, and the particle size of the upper-layer screen is larger than the particle size of the lower-layer screen. By means of the double-layer independent shock excitation screening device used for shield construction muck treatment, the upper-layer box body and the lower-layer box body are in a series connection relationship, muck is subjected to two stages of screening treatment through the upper-layer screen and the lower-layer screen, and the overall treatment efficiency and treatment effect of the screening device can be effectively improved; and in addition, the upper-layer box body and the lower-layer box bodyare independent from each other in structure and function, the same vibration characteristic or different vibration characteristics can be used for different types of muck for vibration screening, thescreening device can achieve muck screening with different characteristics, and the overall treatment efficiency of the screening device is further improved.

The invention discloses a test tube oscillation device for laboratory analysis and testing, which comprises a device main body and a second test tube rack, a first test tube rack is arranged at the upper part in the device main body, the second test tube rack is arranged right below the first test tube rack and is arranged in a guide rail, the guide rail is fixedly mounted below the interior of the device main body, movable pins are arranged on the four sides of the bottom of the second test tube rack, connecting rods are fixedly installed in the movable pins, the other ends of the connecting rods are movably installed on movable plates through the movable pins, and the movable plates are arranged in the device main body. According to the test tube oscillation device for laboratory analysis and testing, test tubes of various types can be fixed, the multiple test tubes can be oscillated at a time, the practicability of the device body is improved, meanwhile, the device body can oscillate in a reciprocating motion mode in multiple horizontal directions, and the amplitude of the test tubes during oscillation can be changed; and therefore, the oscillation uniformity is ensured, and the detection accuracy is ensured.

The invention discloses a low-frequency vibration cutting chip breaking device which comprises a shell, a vibration cutting device and a power device. The vibration cutting device includes an amplitude modulation module, a vibration transmission module and a power transmission module. The amplitude modulation module of the device can realize each-degree graded adjustment between 0 degree and 360 degrees by using a double eccentric sleeve combination, a worm and gear mechanism and an angle indicating mechanism, and continuous adjustment of the vibration amplitude within the specified range canbe realized. The device can reliably realize turning chip breaking and can change the vibration amplitude of cutting of a tool, the vibration amplitude adjustment range of the device is 0 to 0.5 mm (graded speed regulation), and adjustment to appropriate parameters can be realized according to actual specific processing requirements. According to the low-frequency vibration cutting chip breaking device, the rotation speed of a motor is changed by a PWM motor governor, the change of the vibration frequency is achieved, and the frequency adjustment range is 25 Hz to 40 Hz.

The invention discloses a portable beauty apparatus comprising an energy exchange sheet and a liquid storage chamber directly connected with the energy exchange sheet. The portable beauty apparatus also comprises a power supply module, a boosting module and an oscillation module, wherein the power supply module is a battery, and the battery is connected with the energy exchange sheet by the boosting module and supplies power to the energy exchange sheet. The battery is adopted for supplying power, and the boosting circuit drives the energy exchange sheet. The invention has small volume and is convenient to carry.

The invention discloses a portable beauty apparatus comprising an energy exchange sheet and a liquid storage chamber directly connected with the energy exchange sheet. The portable beauty apparatus also comprises a power supply module, a boosting module and an oscillation module, wherein the power supply module is a battery, and the battery is connected with the energy exchange sheet by the boosting module and supplies power to the energy exchange sheet. The battery is adopted for supplying power, and the boosting circuit drives the energy exchange sheet. The invention has small volume and isconvenient to carry.

The invention discloses a punched metal sheet micro-connection separating device. The device comprises a separating support, a vibration falling table is arranged on the upper end face of the separating support, two fixed cross beams are fixed on the separating support, a suspending assembly is arranged on the fixed cross beams, a vibration separating assembly is arranged at the lower end of the suspending assembly, the lower end of the vibration separating assembly is connected with a vibration separating frame, and multiple of vacuum suckers are arranged at the lower end of the vibration separating frame at equal intervals. According to the device, micro-connection separating of metal sheets is achieved, the manpower is saved, the automation degree is high, and the separating effect is good.

The invention relates to a longitudinal vibration turning vibration ultrasonic amplitude-change pole. The longitudinal vibration turning vibration ultrasonic amplitude-change pole comprises an amplitude-change pole body, the front end of the amplitude-change pole body comprises a longitudinal vibration input end, the longitudinal vibration input end comprises a connecting screw hole, the longitudinal vibration input end is connected with a longitudinal vibration excitation device through the connecting screw hole; a bending vibration output end is arranged at the rear end of the amplitude-change pole body and comprises a tool clamping mechanism, the bending vibration output end is connected with and fixes a bending vibration tool through the tool clamping mechanism, a vibration node area is arranged in the middle of the amplitude-change pole and comprises the tool clamping mechanism; and a vibration dividing hole is formed between the vibration node area and the longitudinal vibrationinput end, at least one asymmetric notch is formed between the vibration node area and the bending vibration output end, and the vibration dividing hole and the asymmetric notch are transversely parallel and penetrate through the whole amplitude-change pole body.

The invention discloses a plate type valveless piezoelectric pump and a working method thereof. The plate type valveless piezoelectric pump comprises a plate type piezoelectric base body, a flexible rectangular strip, a pre-pressure frame and piezoelectric ceramic sheets; the piezoelectric base body is of a rectangular plate structure, the upper end face is provided with a rectangular groove, andthe lower end face is provided with a flow inlet hole and a flow outlet hole; the pre-pressure frame is of a frame structure with an opening, and the upper inner wall is provided with a convex rectangular structure which is used for pressing the flexible rectangular strip; the four rectangular piezoelectric ceramic sheets are symmetrically arranged on the two sides of the piezoelectric base body;and during working, the flow inlet hole is filled with liquid, same-frequency equal-amplitude electric signals with the phase difference of pi / 2 are adopted to excite the four piezoelectric ceramic sheets correspondingly, the piezoelectric base body generates second-order bending vibration and first-order longitudinal vibration, the second-order bending vibration and the first-order longitudinal vibration are coupled to form standing wave motion, a movable cavity is formed at the interface matched with the flexible rectangular strip, and the liquid is transported from the flow inlet hole to the flow outlet hole. The pump has the advantages that the structure is simple, the output flow is high, the backflow can be effectively reduced, and miniaturization can be realized.

The invention discloses a booster circuit of a portable beautifying instrument. The booster circuit is connected with a battery and a transduction sheet of the portable beautifying instrument. The booster circuit comprises a booster chip, a voltage stabilizing tube, a first inductor, a first resistor, a second resistor, a third resistor, a first capacitor, a second capacitor, and a switching module for changing division ratio of the resistors connected in parallel so as to enable the booster chip to output different voltage. According to the booster circuit, the division ratio of the feedback resistors is changed by the switching module, so that the feedback voltage ratio of the of the booster chip can be adjusted, the amplitude of the transduction sheet can be changed, and as a result, the spray quantity can be adjusted; meanwhile, the booster circuit has the characteristics of being simple in structure and low in cost.

The invention discloses a method and device for having control over vibration strength, and relates to the technical field of electromotor application. The method and device for having control over the vibration strength can achieve control over the vibration strength of a device in a low-cost mode. The method for having control over the vibration strength comprises the steps of (1) detecting the type of a received control signal, wherein the control signal comprises a positive control signal or a negative control signal; (2) increasing the distance between a rotary shaft of an eccentric electromotor and the gravity center of a cam when the received control signal is the positive control signal, wherein the increased distance is an assigned value; (3) reducing the distance between the rotary shaft of the eccentric electromotor and the gravity center of the cam when the received control signal is the negative control signal, wherein the reduced distance is an assigned value. The method and device for having control over the vibration strength is beneficial to having control over the vibration strength of the device with the eccentric electromotor.

A backpack type small berry picking machine comprises a back frame, a miniature gasoline engine, a centrifugal type clutch, a steel wire flexible shaft, a secondary gear drive mechanism, an eccentric vibration mechanism, a housing, a front annular handle, a rear handle, and branch vibrators; the miniature gasoline engine is arranged on the back frame through a vibration isolation rubber pad; an output shaft of the miniature gasoline engine is connected with an input end of the steel wire flexible shaft through the centrifugal type clutch; a square joint of the output end of the steel wire flexible shaft is connected with a square interface of an axle drive bevel pinion of the secondary gear drive mechanism; the eccentric vibration mechanism comprises an upper crank, a lower crank, an eccentric adjustable camshaft, a dual-face guide rail, an upper reciprocating oscillating lever and a lower reciprocating oscillating lever; the branch vibrators are respectively fixed on the front ends of the upper and lower reciprocating oscillating levers; the front portion and rear portion of the housing are respectively provided with a front annular handle and a rear handle; the rear handle is provided with a speed regulator; the speed can be regulated so as to allow the small berry branches to generate different frequency vibrations, and the vibration force can separate the small berries from the branches.