37results about How to "Extend the vibration time" patented technology

The invention belongs to the field related to additive manufacturing and discloses a powder distribution device and an additive manufacturing device. The powder distribution device comprises a powder spreading platform and hoppers arranged above two sides of the powder spreading platform, powder materials are placed in the hoppers, powder-material placing locations are arranged on the two sides of the powder spreading platform, the powder materials are transferred to the powder-material placing locations through the hoppers, scrapers vertically arranged above the powder spreading platform are allowed to move along the horizontal direction as well as the vertical direction, and the scrapers are respectively located on one sides of the powder-material placing locations when moving along the vertical direction. The powder distribution device is provided with the scrapers allowed to move along the horizontal direction as well as the vertical direction, two-way powder scraping is realized, thickness of powder layers is evener as compared with the existing one-way powder scraping, and powder spreading efficiency is improved. Further more, the scrapers are vertically arranged, so that two-way powder scraping can be better realized, and waste of the powder materials is avoided.

The invention discloses a vibration energy collector. The collector comprises a piezoelectric cantilever beam and a mass block. The piezoelectric cantilever beam comprises a main beam which is transversely arranged, a plurality of first auxiliary beams which are vertically arranged and a plurality of second auxiliary beams which are vertically arranged. One end of the main beam is a fixed end. The other end of the main beam is a free end. The mass block is fixed to the free end of the main beam. The plurality of first auxiliary beams are arranged with intervals and are fixed to one side of the main beam. The plurality of second auxiliary beams are arranged with intervals and are fixed to the other side of the main beam. By using the vibration energy collector, the main beam of the piezoelectric cantilever beam is provided with the plurality of first auxiliary beams and the plurality of second auxiliary beams; each auxiliary beam possesses a respective resonant frequency and resonant frequency points of the vibration energy collector are increased; and when each auxiliary beam generates vibration, voltage attenuation of two sides of each resonant frequency point is slow so that a bandwidth is increased. Simultaneously, through the auxiliary beams, an electricity production area is correspondingly increased, output electric energy is improved and a problem that a frequency point energy density is low is solved.

The invention discloses a vibration energy harvester. The vibration energy harvester comprises a piezoelectric cantilever beam and a quality block, wherein the piezoelectric cantilever beam comprises a fixed plate, a first circuitous plate, a second circuitous plate and a vibration plate; the fixed plate and the vibration plate are separately arranged; the first circuitous plate and the second circuitous plate are oppositely arranged; one end of the first circuitous plate is connected with the fixed plate; the other end of the first circuitous plate is circuitous along a direction toward the second circuitous plate and is connected with the vibration plate; one end of the second circuitous plate is connected with the fixed plate; the other end of the second circuitous plate is circuitous along a direction toward the first circuitous plate and is connected with the vibration plate; and the quality block is fixed on the vibration plate. According to the vibration energy harvester, the fixed plate and the vibration plate are connected through the first circuitous plate and the second circuitous plate; compared with the traditional straight cantilever vibration energy harvesters with the same size, the vibration energy harvester of such a structure has the advantages of decreasing the widths of actual cantilevers, and being easier to sense the vibration and lower in resonant frequency.

An improved eccentric type self-locking nut fundamentally solves the problems of looseness and the like under the working conditions of high vibration frequency, high vibration strength, long vibration period and the like in the prior art and comprises a lower body and an upper body, an eccentric boss is arranged on the upper portion of the lower body, and an eccentric hole is formed in the lower portion of the upper body. The eccentric type self-locking nut is technically characterized in that the eccentric boss of the lower body and the eccentric hole of the upper body are connectively fixed in a close fit manner through a thin-walled sleeve with a frustum, the external diameter of the eccentric boss of the lower body is as same as the internal diameter of the thin-walled sleeve with the frustum, the internal diameter of the eccentric hole of the upper body is as same as the external diameter of the thin-walled sleeve with the frustum, axial central lines of the eccentric boss, the eccentric hole and the thin-walled sleeve with the frustum as well as a thread central line of the upper body and a thread central line of the lower body deviate from a same eccentric axis when the eccentric boss, the eccentric hole and the thin-walled sleeve with the frustum are in the initial state, and an axial initial distance is set between the end of the upper body and the end of the lower body. The eccentric type self-locking nut is simple in processing technology, reasonable in bearing after being matched with a connecting bolt, convenient to mount and demount like a common nut and capable of using own looseness moment to achieve a locking function, and has the advantages of capability of remarkably improving nut looseness preventing effect, more benefit to reuse and the like.

The invention provides an auxiliary device for hang-dried jujube harvest. The auxiliary device comprises a dragging and carrying support, a primary collecting transporting unit, a sorting unit, a terminal collecting unit and a storage battery. The dragging and carrying support comprises a dragging and carrying base plate, and the primary collecting transporting unit comprises two transporting mechanisms; each transporting mechanism comprises a conveyer belt, a conveyer belt support and a driving motor, and the two conveyer belt supports are hinged to the rear portion of the dragging and carrying base side by side; a first chute located in the lower side of the each conveyer belt is formed in front of each conveyer belt support, and the sorting unit comprises a sorting screen and a miniature vibrating motor; the sorting screen is located below the outlet ends of the two sorting screens, and the miniature vibrating motor is located on the bottom plane of a feeding port of the sorting screen; and the terminal collecting unit comprises a second chute, a third chute and a collecting box. Through the device, automatic collecting and primary sorting of hang-dried jujubes can be achieved, the harvest efficiency of the hang-dried jujubes is improved, and meanwhile the labor intensity of harvest is also relieved.

The embodiment of the invention relates to the field of motor control, and discloses a linear motor resonance frequency detecting method and device. The linear motor resonance frequency detecting method provided by the embodiment of the invention comprises the steps that S10 multi-frequency noise is added to a drive signal of a motor; S20 the motor is controlled to vibrate under the drive signal with the multi-frequency noise, and the characteristic physical quantity corresponding to each frequency is detected when the motor vibrates; and S30 the frequency corresponding to the detected maximumcharacteristic physical quantity is used as resonance frequency. The embodiment of the invention further discloses a linear motor resonance frequency detecting device. According to the embodiment ofthe invention, the resonance frequency of the linear motor is detected.

The invention discloses a waste gas dust removal device, and relates to the technical field of waste gas treatment devices. The dust removal device comprises a dust removal box body and a mounting frame fixed at the bottom of the dust removal box body, wherein one vertical side surface of the dust removal box body communicates with an air inlet pipe and an air outlet pipe; a partition plate is horizontally arranged in the dust removal box body and divides the interior of the dust removal box body into a dust removal cavity and a dirt collection cavity; a plurality of dust removal parts extending into the dust removal cavity are fixedly mounted on the partition plate, and openings of the dust removal parts communicate with the dirt collection cavity; and each dust removal part comprises a mounting framework, a filter bag and a vibration part, the outer side of the mounting framework is sleeved with the filter bag, and the vibration part for driving the mounting framework to vibrate is mounted on the inner side of the mounting framework. According to the invention, the plurality of dust removal parts are mounted in the dust removal box body, so that the filtering area is effectively increased, and the filtering effect is improved; and in addition, dust attached to the interiors of the dust removal parts is cleaned through the arranged vibration parts.

The invention discloses a self-powered dynamic weighing device based on a magnetostrictive material and a working method. The device comprises a base, a supporting plate, a bearing column, a guide assembly, a weighing assembly and self-energizing assemblies. The weighing assembly is installed on the base. The guide assembly is installed on the base. A cross beam capable of sliding up and down is arranged in the guide assembly. The bearing column is fixed to the cross beam, the bottom end of the bearing column abuts against the weighing assembly, and the top end of the bearing column is fixed to the supporting plate. One or more energy supply arms are arranged on the cross beam. The energy supply arms are made of an elastic material. The number of the self-energizing assemblies corresponds to the number of the energy supply arms. The self-energizing assembly comprises a pushing plate, a transmission assembly, an impeller and a magnetostriction energy collection module. The magnetostriction energy collection module is installed on the base and comprises a magnetostriction rod, an induction coil and a permanent magnet. According to the working method, parameters such as the vehicle speed, the wheel distance and the axle number of the vehicle are measured and calculated by detecting the time of each wheel, and comprehensive data acquisition of vehicles passing through the road can be realized.

The invention discloses a reduction belt capable of improving the deceleration effect and reducing the vibration effect. The reduction belt includes longitudinal decelerating strips and transverse anti-slip strips. The length direction of the longitudinal deceleration strips corresponds to that of the provided roadway; meanwhile, the longitudinal decelerating strips are arranged along the width direction and the length direction of the provided road. The longitudinal decelerating strips are arranged side by side along the width direction of the provided road at the same intervals; the longitudinal decelerating strips are arranged in a staggered pattern along the length direction of the provided road at the same intervals. The longitudinal decelerating strips are arranged side by side with a width of 20-50 cm; the longitudinal decelerating strips are arranged in a staggered pattern with a width of 100-200 cm. The thickness of the transverse anti-slip strips is below that of the longitudinal decelerating strips; the length direction of the transverse anti-slip strips corresponds to the width direction of the provided road. The transverse anti-slip strips are laid at the same intervals on the road provided between the longitudinal deceleration strips.

The invention provides an oil smoke suction device of an integrated cooker, and belongs to the field of articles for daily use. The oil smoke suction device solves the problem that the conventional integrated cooker is loud in noise. The oil smoke suction device of the integrated cooker is characterized in that the integrated cooker comprises a casing and a fan arranged in the casing; a smoke exhaust channel provided with an outlet and an inlet is formed in the casing; a smoke gathering tank is fixed in the casing; the upper end of the smoke gathering tank is inserted into the outlet of the smoke exhaust channel; among the inner walls on the four sides of the smoke gathering tank, guide surfaces arranged obliquely are arranged on the left inner wall and the right inner wall, and planes are arranged on the front inner wall and the rear inner wall; a smoke guide port is formed in the front wall of the smoke gathering tank; the fan is arranged on the front side of the smoke gathering tank, and comprises a housing; an air inlet of the fan is formed in the rear side of the housing, and directly faces the smoke guide port; a bottom plate is arranged below the housing; the bottom plate and the smoke gathering tank are fixed; a supporting plate is arranged between the bottom plate and the housing; the fan is arranged on the upper side of the supporting plate; and a plurality of buffer springs are arranged between the supporting plate and the bottom plate. The oil smoke suction device of the integrated cooker is low in noise.

The invention discloses a building material mixing device, and relates to the technical field of building material mixing. The building material mixing device comprises a base, a mixing cylinder and a driving motor are fixedly installed at the top of the base, the driving motor is located at the top of the mixing cylinder, and an output shaft of the driving motor is fixed to the top end of a mixing and stirring roller. According to the building material mixing device, in the mixing and stirring process of lime and other building materials, heavy stones are close to the inner wall of the mixing barrel under the action of large centrifugal force, when mixing and stirring blades rotate, a mixture of the lime and the other building materials can penetrate through a screening channel, the stone blocks with large diameters are blocked by the two protruding parts in the screening channel and stay in the screening channel, and through cooperation of a driving mechanism and a storage mechanism, the stone blocks can be pushed into a storage bin to be stored, so the situation that the stone blocks exist in the mixed wall coating mixture and affect a wall coating can be prevented.

The invention discloses a dynamic weighing device based on a multi-cantilever beam structure, and a weighing method thereof. The process from the installation and wiring of the existing dynamic weighing equipment to the use of the equipment has great damage to the road surface, and takes a long time. The device comprises a shell, an elastic element, a force transmission block, cantilever beams, a mass block, a mechanical induction mechanism, a power storage module and a wireless transmission module. The inner ends of the cantilever beams do not make contact with each other and make contact with the bottom face of the force transmission block. The end part of the inner end of each cantilever beam is positioned above the mass block. One or more cantilever beams are provided with piezoelectric layers. And the outer end of each cantilever beam is fixed with the side wall of a road surface mounting groove. The mechanical induction mechanism, the mass block, the force transmission block and the piezoelectric cantilever beams can collide when the piezoelectric cantilever beams vibrate, the piezoelectric cantilever beams continuously collide due to the reactive force of the elastic element, and the vibration time of the piezoelectric cantilever beams can be longer due to the continuous collision, so the magnitude of electric energy generated by the piezoelectric cantilever beams is increased.

The invention discloses a storage tank for polymer particles, and relates to the technical field of storage of the polymer particles. The storage tank comprises a tank body and a sampling device, wherein the sampling device comprises a sampling tube vertically and glidingly connected to the bottom of the tank body; a plurality of rotary cutting blades which are spirally arranged are arranged at the top port of the sampling tube, and the rotary cutting blades are arranged at intervals and are tilted toward the center of the sampling tube; the bottom port of the sampling tube is connected with atube plug or a sample storage device; a lifting mechanism is arranged at the bottom of the tank body, and a rotating mechanism is connected on the lifting mechanism and vertically moves under the driving of the lifting mechanism; and the sampling tube is connected on the rotating part of the rotating mechanism and rotates under the driving of the rotating mechanism. The storage tank for the polymer particles solves the technical problem of complicated sampling of the polymer particles stored in the prior art, realizes the quantitative stable sampling, controls the sampling quantity accurately, and cannot affect the environment inside the tank body. The invention further provides a sampling method applying the storage tank for the polymer particles.

The invention discloses a double-ball type self-resetting wave energy collecting device which comprises a protective shell, an eccentric inner spherical shell with the gravity center not coincident with the sphere center is arranged in the protective shell, a first energy collecting mechanism and a second energy collecting mechanism are arranged in the eccentric inner spherical shell, and the first energy collecting mechanism comprises a cantilever beam made of a flexible material; the second energy collecting mechanism comprises a pipeline arranged on the eccentric inner spherical shell and a first permanent magnet arranged in the pipeline in a sliding mode, the pipeline is provided with a cantilever beam, a piezoelectric plate is attached to the cantilever beam, one end of the cantilever beam is fixedly connected with the inner wall of the eccentric inner spherical shell, and the other end of the cantilever beam is provided with a second permanent magnet playing a role of a mass block. The first permanent magnet and the second permanent magnet are opposite, the corresponding magnetic poles are the same, a coil is further arranged on the outer side of the pipeline, repulsion of the first permanent magnet and the second permanent magnet can prolong the vibration time of the cantilever beam, meanwhile, magnetic induction lines can be cut, power is generated through the Faraday effect, and compared with an energy collection device of a single-ball structure, the power generation efficiency is greatly improved.

The invention discloses a vibration device for automatically separating an isolation ring and a material handle. The vibration device includes a base, a material trough, a material trough support device, a material trough guide device and an excitation source. The base is connected to the material trough guide device through a lower support rod and an upper support rod which are adjustable in height, the material trough guide device is connected to the material trough in a sliding manner, and the material trough is connected with the excitation source enabling the material trough to slide along the material trough guide device; the material trough is internally provided with a screen plate and a sliding groove which are arranged in parallel, the screen plate is arranged above the sliding groove, and the material trough guide device comprises an upper chute, a lower chute and a supporting roller connected to the upper chute and the lower chute. The excitation source is an excitation plate, the excitation plate is provided with a guide shaft, and the lower end of the material trough is provided with a slot plate, and the guide shaft is connected to the slot plate. By means of the vibration device, the vibration amplitude of the material trough can be adjusted by installing the guide shaft in different connection holes, the degree of separation between the material handle and theisolation ring can also be achieved by reducing the height difference between the two ends of the material trough to prolong the vibration time and or can be achieved by increasing the vibration rangeof the material.

The invention discloses a screening device for fertilizer processing, and relates to the technical field of fertilizer processing. The screening device for fertilizer processing comprises a driving base and a screening pipe, a driving motor is fixedly mounted at the bottom of the inner wall of the driving base, an output shaft of the driving motor is fixed to the bottom of a spiral driving piece, and the spiral driving piece penetrates through a partition plate and is rotationally connected with the partition plate. According to the screening device for fertilizer processing, the spiral driving piece is driven by the driving motor to rotate so that fertilizer in the driving base can ascend, and under the action of a feeding opening, the non-caked fertilizer enters a conveying cavity and descends into the driving base; and under slight vibration of a vibration mechanism, naturally adhered and gathered fertilizers can be loosened and then enter a conveying cavity, and the damped and caked fertilizers can rise to the topmost part of the screening pipe along with the spiral driving piece due to relatively high stability, so that automatic screening of the fertilizers is completed, and the screening effect of the fertilizers is better.