94results about How to "Reduce vibration frequency" patented technology

The invention discloses a damping mechanism and a warp knitting machine and process based on the damping mechanism, and relates to the field of damping mechanisms, the damping mechanism comprises a damping hydraulic cylinder and a damping hydraulic rod, the damping hydraulic rod is inserted in the damping hydraulic cylinder, a damping cylinder is fixedly installed on the damping hydraulic cylinder, and a flow limiting hole is formed between the damping cylinder and the damping hydraulic cylinder; an adjusting plate is connected to the damping hydraulic cylinder through a screw cylinder, a damping plate is fixedly installed on the top of the damping hydraulic rod, a damping spring is arranged between the damping plate and the adjusting plate, and the damping hydraulic cylinder and the damping hydraulic rod are sleeved with the damping spring. The base is rapidly leveled, the damping mechanisms and the warp knitting machine body are prevented from inclining, the stress of the damping mechanisms is consistent, the damping effect on the warp knitting machine body is better, the inclination degree of the base is more conveniently known, and the situation that the base is inclined due to misoperation of the leveling unit is prevented; the length of the supporting unit is prevented from being changed under the condition that the leveling unit vibrates, the flatness of the base is guaranteed, and the running stability of the warp knitting machine body is improved.

The invention relates to the technical field of steel strip cutting and slitting, in particular to cold-rolled steel strip slitting equipment which comprises a cutting mechanism, the cutting mechanism comprises a cutting knife used for cutting a steel strip, a first iron core is arranged on the side wall of the cutting knife in a sliding mode, and a first electromagnetic coil making contact with the first iron core is arranged on the outer gap of the first iron core in a sleeving mode; and the bottom end of the cutting knife is fixedly connected with a second iron core. After a steel belt is placed on the top of the cutting table, the steel belt can push a rotating wheel and a rolling frame to synchronously move upwards, the telescopic end of a first elastic telescopic rod drives a first conducting strip to slide on a first resistance plate, the current of a first sliding rheostat is detected through a current detection module in a PLC, and therefore the thickness of the steel belt is fed back; according to the thickness of the steel belt, the PLC controls current introduced into the first electromagnetic coil and the second electromagnetic coil, so that the cutting knife generates proper frequency to perform high-frequency vibration up and down and left and right.

The utility model provides an electric tool which comprises a tool body, the tool body comprises a first shell, a battery mounting part and a first power supply terminal, the battery mounting part is arranged on the first shell, and the first power supply terminal is arranged on the battery mounting part; the battery pack comprises a second shell, a battery combination part and a second power supply terminal, and the battery pack is mounted on the battery mounting part of the tool main body through the battery combination part; the magnetic attraction assembly comprises a first magnetic attraction part and a second magnetic attraction part which are matched with each other, the first magnetic attraction part is arranged on the battery mounting part, and the second magnetic attraction part is arranged on the battery combining part; according to the electric tool, by arranging the magnetic attraction assembly, when the electric tool works, the vibration frequency and / or the gap between the first power supply terminal and the second power supply terminal can be reduced by means of the attraction force between the two magnetic attraction components, so that the probability of poor contact between the terminals is reduced, the condition of sparking between the terminals is avoided, and the service life of the whole machine is prolonged.

The invention belongs to the field of organic electroluminescent materials, and discloses a blue light host material, a preparation method and an organic electroluminescent device. The structure of the blue light host material is as shown in a chemical formula I: # imgabs0 #. After the blue light host material provided by the invention is applied to the organic electroluminescent device, the driving voltage of the photoelectric device can be reduced, the luminous efficiency of the photoelectric device can be improved, and the service life of the photoelectric device can be prolonged.

The utility model discloses a tricycle rear wheel seat damping stabilizing mechanism which comprises a tricycle body, a tricycle frame is arranged at the bottom of the tricycle body, two damping mechanisms are fixedly connected to the lower end of the tricycle frame, a rear axle is fixedly connected to the bottoms of the two damping mechanisms, and wheels are installed at the two ends of a rotating shaft of the rear axle. The middle part of the upper end of the rear axle is fixedly connected with a buffer mechanism; the buffering mechanism comprises a mounting plate and a first spring shock absorber, the mounting plate is fixedly connected to the middle of the upper end of the rear axle, the upper end of the mounting plate is fixedly connected with second rotating frames, the two second rotating frames are perpendicular to the rear axle, and the other end of the first spring shock absorber is rotationally connected with a first rotating frame. The buffering effect of the tricycle during uphill or downhill can be improved, the situation that the damping effect on the tricycle is reduced due to the fact that the weight borne by one end of the plate spring is too large is avoided, meanwhile, the return speed of the plate spring is reduced, and the stability of the tricycle during running on a slope is improved.

The utility model discloses a vibration reduction platform based on low-frequency limit cooperative control, which belongs to the technical field of vibration reduction platforms and comprises a bottom plate, a top plate, a vibration reduction component, a pressure bearing part and a sliding component. The top plate is connected with the bottom plate through the damping assembly. The vibration reduction assembly comprises a supporting block, a wedge-shaped piece, a movable piece, a movable rod, a fixed plate and a vibration reduction spring A; the four supporting blocks are evenly arranged on one side of the top plate through the pressure bearing pieces. The wedge-shaped piece is connected with one end of the supporting block; the two movable parts are symmetrically arranged on the two sides of the wedge-shaped part. The movable rods are fixedly arranged on the sides, deviating from each other, of the two movable parts; the fixed plate is sleeved on the movable rod; according to the vibration reduction platform based on low-frequency limit cooperative control, vibration force can be dispersed and buffered through the arranged vibration reduction assembly, the vibration frequency can be reduced, low-frequency limit vibration reduction is achieved, cooperative control over the vibration force can be achieved through multiple dispersion and buffering, and the vibration reduction effect is improved. Therefore, the effect of low-frequency limit cooperative control is realized.

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 utility model relates to the technical field of automobile braking, and discloses an automobile brake disc with a shockproof function, which comprises an installation disc body, an installation groove is fixedly arranged at the inner end of the installation disc body, a shockproof assembly is arranged at the inner end of the installation groove, and the shockproof assembly comprises a limiting hydraulic rod. The limiting hydraulic rod is fixedly mounted at the inner end of the mounting groove, a clamping plate is fixedly mounted at the lower end of the limiting hydraulic rod, a clamping groove is fixedly formed in the position, located on the outer side of the limiting hydraulic rod, of the upper end of the clamping plate, and a rotating ball is rotationally mounted at the lower end of the clamping plate; and springs are fixedly mounted at the inner ends of the mounting grooves and located on the outer sides of the limiting hydraulic rods. According to the automobile brake disc with the shockproof function, the tension of the springs is limited through the limiting hydraulic rods, so that the springs cannot generate elasticity violently, the vibration frequency of the springs is reduced, the vibration sense of a driver in the driving process can be reduced, the driving concentration of the driver is improved, and the driving comfort of the driver is effectively improved.

The invention relates to the technical field of packaging barrels, in particular to an anti-impact packaging barrel which comprises a sealing cover, a barrel body, a handle and bolts, a damping pad is arranged on the outer side of the barrel body, a connecting plate is fixedly connected to the side, away from the barrel body, of the damping pad, a mounting groove is formed in the inner side of the connecting plate, and a damping rod is fixedly connected to the inner side of the mounting groove; a damping rod is arranged on the base, a spring is arranged on the outer side of the damping rod, and one end of the damping rod is fixedly connected with an elastic protection pad. In the shock absorber, through the arrangement of the damping rod, the spring and the elastic protection pad, vibration energy generated by impact can act on the elastic protection pad, and the elastic protection pad can act on the damping rod and the spring after being deformed to a certain degree; the spring can store and release the vibration energy, the damping rod can consume the energy, the vibration amplitude and frequency of the connecting plate are jointly reduced, the vibration energy transmitted to the barrel body is reduced, and the barrel body is not prone to deformation.

The aquadag coating device comprises a shell and an aquadag groove, the aquadag groove is located at the top of the shell and used for containing aquadag and allowing a tungsten filament to penetrate through an opening of the groove, the aquadag coating device further comprises a pressing and covering part which is placed on the upper side of the aquadag groove, presses and covers the tungsten filament and is used for reducing vibration of the tungsten filament, and the pressing and covering part has adsorbability. Inclined guide plates are symmetrically arranged at the bottom in the shell and guide aquadag towards the center of the bottom of the shell, one ends of the guide plates are located on the side wall of the shell, the other ends of the guide plates are located on a bottom plate of the shell, porous filter plates are arranged at the joints of the guide plates and the bottom plate and are perpendicular to the guide plates, and the guide plates are made of heat conduction materials. A temperature adjusting element is arranged on the side, away from the aquadag groove, of the bottom plate, and a pump body is arranged in the center of the bottom plate and connected with the aquadag groove through a conveying pipe. Through the structural design, the problems of splashing, deposition, viscosity change, oil pump blockage and the like in the coating process of aquadag can be solved, and the lubricating effect in the tungsten wire drawing process is improved.

The utility model discloses a transportation driving counterweight tool, and particularly relates to the field of counterweight tools, the transportation driving counterweight tool comprises a framework assembly, a limiting seat is fixed at the top of the framework assembly, a pressing seat is arranged at the top of the framework assembly, the device is provided with a reinforcing connecting device, and the outer side of a counterweight is stably reinforced by a positioning reinforcing block; the weight of the balance weight tool can be well borne, the speed change in the running process is overcome, the balance weight is firmly fixed to the framework assembly, the risk that the balance weight slides out in the running process is reduced, the multiple brackets play a role in auxiliary supporting, and the vibration frequency of the tool in the conveying and running process is reduced; the device is provided with a stabilizing and reinforcing device, when a framework assembly is placed, after a supporting anti-skid pad is attached to the placing position of the framework assembly, the corresponding face of a positioning nut and the corresponding face of a connecting metal plate are attached to fix the position of the supporting anti-skid pad, and the supporting area of the framework assembly is increased through the supporting anti-skid pad when the framework assembly is placed; and the placement structure of the device is stable.

The invention relates to the technical field of animal transportation, in particular to a transfer cage. The transfer cage comprises a cage body, a movable assembly and a noise reduction assembly. The cage body is provided with a cavity and an opening. The opening is used for animals to enter and exit the chamber; the movable assembly comprises a guide rail, rollers and a body. The guide rail is connected with the end of the opening. The rollers are connected with the body; the rollers are movably matched with the guide rails; the body is used for opening or closing the opening; the noise reduction assembly comprises a starting switch, a first sound receiver, a processor and a first loudspeaker; the starting switch and the first sound receiver are arranged at the movable matching part of the body and the guide rail; the processor and the first loudspeaker are arranged on the cage body; the processor is electrically connected with the starting switch, the sound receiver and the first loudspeaker at the same time. According to the transfer cage, noise and vibration frequency can be reduced in the transportation process, the possibility of stress of animals is reduced, and a more comfortable activity space is provided for the animals.

This application relates to an earphone, which includes a housing, a speaker module, and a vibrator. The housing has a receiving cavity and includes a first housing and a second housing. The first housing and the second housing are connected by an elastic connector so that the first housing can vibrate relative to the second housing. The first housing and the second housing enclose the receiving cavity. The first housing or the second housing is provided with a sound outlet, which communicates with the receiving cavity. The speaker module is disposed in the receiving cavity. The sound waves emitted by the speaker module are conducted through the air and transmitted through the sound outlet. The vibrator is disposed in the receiving cavity and connected to the first housing. The vibrator drives the first housing to vibrate so as to conduct sound waves through the bone. This application realizes the conduction of sound waves through "air conduction combined with bone conduction", and the elastic connector can effectively alleviate the sound leakage problem and improve the low-frequency sound quality.

The utility model belongs to the technical field of medical diagnosis, and particularly relates to a kit for folate metabolism disorder diagnosis, which comprises an outer box, shockproof structures are installed on the end face and the bottom of an inner cavity of the outer box and located at the corners, each shockproof structure comprises a first universal joint, a supporting disc is installed at the other end of each first universal joint, and a spring is installed on each supporting disc; through the design of a fixed structure, the problems that a plurality of reagent bottles are placed in the kit and mixed together, cross infection is easily caused, and the diagnosis result is influenced are solved, so that the accuracy of the diagnosis result is guaranteed; through the design of the shockproof structure, the problem that reagent bottles in the kit are damaged due to the fact that the kit is bumped or collides with other objects in the transportation process of the kit is solved, and therefore the safety of the reagent bottles in the transportation process is guaranteed.

The utility model discloses an engine shock -proof connecting support, it relates to vehicle power equipment installation damping field, and the bottom both ends of power source are provided with front connecting piece and rear connecting piece respectively, and are fixedly connected through the power source connecting piece of positioning screw and shock -proof connecting support main part front and rear both ends, the rear of power source connecting piece is provided with buffer sleeve, and the left and right sides in buffer sleeve are equipped with buffer cover, and two reinforcing cross bars are arranged on the carrier support, two reinforcing cross bars all are equipped with two locating rods, and locating rod is provided with locating hole no.

The utility model discloses a vacuum drying oven, and belongs to the technical field of vacuum drying ovens, the vacuum drying oven comprises an oven body, an exhaust pipe penetrates through the top end of the oven body, one end of the exhaust pipe is fixedly connected with an adapter pipe, a mounting seat is fixedly mounted at the bottom end of the adapter pipe, and an exhaust pump is fixedly mounted on the upper surface of the mounting seat; a damping mechanism is fixedly mounted at the bottom end of the mounting seat, and a switch button is arranged on the outer side wall of the box body. Through the arrangement of the balance seat, the positioning hole, the baffle, the shock absorber, the bearing plate and the rubber mat, the positioning hole is convenient for mounting bolts, fixing the balance seat and the mounting seat and supporting the air pump, the shock absorber can be used for relieving the shock caused by the operation of the air pump and reducing the shock frequency, and the rubber mat can be used for avoiding position sliding as much as possible when the air pump operates, so that the service life of the air pump is prolonged. And the friction with the ground is increased, and resonance generated during operation of the sucking pump cannot be transmitted into the box body, so that the box body is supported more stably, and the optimal use effect is achieved.

The utility model relates to the technical field of dryers, and discloses a dryer for producing cat and dog pet food, which comprises a drying box, a drying component is fixedly mounted on the inner wall of the drying box, a sealing cover plate is movably mounted at the top end of the drying box, and a feeding bin is fixedly connected to the outer side wall of the drying box. A temperature controller is fixedly mounted at the bottom of the outer wall of the drying box, a supporting seat is fixedly connected to the bottom end of the drying box, a drawing box is slidably connected to the inner wall of the supporting seat, and a handle is fixedly connected to the outer side wall of the drawing box. Through the arrangement of the conical cover, the filter screen, the mounting base, the fan and the heating wire, the fan is mounted and supported through the mounting base, pet food in the drying box can be prevented from falling into the mounting base through the conical cover, hot air flow is emitted through the heating wire, the hot air flow is blown into the drying box through the fan, the pet food is dried, and hot air circulation is facilitated through the filter screen; and when more pet food is stacked, the interior of the food is dried more uniformly, and practicability is high.

The present invention discloses a limited space electromechanical structure fixed connection part for air conditioning and ventilation in the technical field of electromechanical structure fixed connection parts, comprising a temperature sensor, a shell, a motor and a connection end, wherein the connection end is rotatably connected to the inside of the shell through a connecting rod, a blade is fixedly connected to the connection end, and the output shaft of the motor is fixedly connected to a support part, and a drive ring is arranged on the left side of the support part; in the present invention, when heat dissipation is needed, the motor moves to the left relative to the connection end, and the contact between the heat accumulation area therebetween and the external cold air will increase, so that the heat accumulation area between the motor and the connection end will be reduced, thereby facilitating cooling, and the synchronous rotation of the motor and the connection end is completed by clamping of a clamping block, and when the motor quickly moves to the extreme left side and the clamping block clamps the connection end, although the distance between the motor and the connection end will be extended, it can still stably and quickly resume rotation under the clamping of the clamping block.

The invention discloses a rotor unmanned aerial vehicle with a retractable unmanned aerial vehicle structure, and relates to the technical field of unmanned aerial vehicles, the rotor unmanned aerial vehicle comprises a fuselage, a bent frame is fixedly mounted on the outer surface of the fuselage, and a protective frame is fixedly mounted at the top of the bent frame; the retractable undercarriage is used for stably supporting the unmanned aerial vehicle; and a balance driving member. According to the rotor unmanned aerial vehicle with the retractable unmanned aerial vehicle structure, when the unmanned aerial vehicle lands, the supporting blocks make contact with the ground, and when the unmanned aerial vehicle lands, the supporting blocks are affected by the weight of the unmanned aerial vehicle and extrude the ground, so that when the obliquely-arranged supporting blocks make contact with the ground, the supporting blocks make contact with the ground; damping rods connected to the surfaces of positioning blocks are driven to rotate in clamping blocks through rotating rings according to the terrain influence, so that the contact angle between supporting blocks and the ground is adjusted when the unmanned aerial vehicle is parked, the supporting blocks arranged in multiple directions are attached to and matched with the ground at the moment, the unmanned aerial vehicle is parked stably, and the phenomenon that the unmanned aerial vehicle shakes during landing is avoided.

The utility model provides an ore composition detecting and analyzing device which comprises a device main body support, an adjusting piece and a guiding piece, and the left side and the right side of the lower end of the device main body support are respectively provided with a bottom plate used for fixing. The device body support is installed above an underground hole, the adjusting rotating handle is rotated according to the size of the hole to enable the adjusting external thread and the adjusting threaded hole to rotate in a screwed mode, the two sets of guiding pieces at the two ends can move front and back correspondingly, and the guiding wheels are attached to the inner side face of the hole; and in the moving process of the guide wheels, the vibration frequency can be reduced through the spring damping shock absorbers, so that the detection frame can be stably guided in the process of going deep into the hole, the detection frame can be driven by the lifting rope to move up and down by adding the device main body bracket, and detection and analysis of ores with different depths are facilitated.

This invention belongs to the field of integrated circuit equipment technology and discloses a high-damping vibration-damping base for integrated circuits, including a lower base. The integrated circuit equipment is placed inside the upper base and is centered and clamped by four first flexible square rings in the clamping assembly. When the integrated circuit equipment is used and subjected to vibration during operation, the upper base vibrates. The force on the upper base is transmitted to the second block, the second spherical rod, the elastic damper, the first spherical rod, and the first block, causing the elastic damper to extend and retract, thus mitigating the impact force generated during vibration. Since the multiple second spherical rods and the first spherical rods can move in a circular motion around the second block and the first block, when the integrated circuit equipment vibrates irregularly, the impact force generated in multiple directions of movement of the integrated circuit equipment can be mitigated, reducing the vibration frequency of the upper base relative to the lower base.

This utility model belongs to the field of ventilator technology, and in particular to a ventilator housing structure, including a body with a shell on the body. Two transformers are housed inside the shell, and two transformer-to-transformer heat dissipation assemblies corresponding to the transformers are provided on the shell. Each transformer-to-transformer heat dissipation assembly includes a filter screen, a voltage-stabilizing heat dissipation plate, and a pressure pad. The pressure pad is fixed to one side of the voltage-stabilizing heat dissipation plate and attached to the outer surface of the transformer. By attaching the pressure pad to the outer surface of the transformer and covering the outside of the transformer with the voltage-stabilizing heat dissipation plate, the position of the transformer can be further stabilized after the shell is installed, and heat dissipation is facilitated. Simultaneously, by rotating the position of the filter screen, the filter screen and voltage-stabilizing heat dissipation plate can be pulled out from the shell, facilitating direct inspection of the transformer through the corresponding position on the shell. This not only ensures stable operation of the ventilator and reduces the vibration frequency of the transformer inside the ventilator, but also extends the service life of the ventilator.

The utility model discloses a miniature steel ball stub bar and tail double-layer screening machine which comprises a discharging hopper, a discharging pipe is fixedly connected to the bottom of the front end of the inner wall of the discharging hopper, multiple sets of lower supporting columns are welded to the two ends of the top of a frame body, spring washers are connected to the bottom ends of the outer walls of the lower supporting columns in a sleeved mode, and springs are connected to the top ends of the outer walls of the lower supporting columns in a sleeved mode. The top ends of the inner walls of the springs are sleeved with upper supporting columns, second screening plates are welded to the tops of the upper supporting columns, baffles are welded to the two ends of the top of each second screening plate, first screening plates are welded to the tops of the baffles, the first screening plates can screen steel ball blank finished products, and blank waste and chippings can directly penetrate through the first screening plates and fall on the surfaces of the second screening plates. The second screen plate can screen steel ball blank waste materials, blank chippings can penetrate through the second screen plate to fall on the ground, through the arrangement of the two screen plate structures of the first screen plate and the second screen plate, material heads and material tails can be thoroughly screened out, and the product quality can be greatly improved.

The utility model discloses a cushioning assembly of a compressor special for an oxygen generator. The cushioning assembly comprises a supporting cushioning frame and a fixed base, wherein the supporting cushioning frame and the fixed base are arranged inside an oxygen generator body and outside the compressor; the supporting cushioning frame comprises two sets of fixing frames and a cushioning frame, a plurality of sets of cushioning structures are arranged between the fixing frames and the cushioning frame, mounting sleeves are arranged at the two ends of the fixing frames, cushioning blocks corresponding to the mounting sleeves are arranged at the two ends of the cushioning frame, moving blocks are arranged on the two sides of the cushioning blocks, and the moving blocks are arranged on the two sides of the cushioning frame. A plurality of springs are mounted between the cushioning block and the bottom of the mounting sleeve; a buffer plate is arranged in the fixed base, and a plurality of buffer springs I are mounted at the bottom of the buffer plate; according to the utility model, the supporting cushioning frame is arranged on the shell of the compressor to reduce the vibration frequency generated to the connecting piece when the compressor works; the supporting cushioning frame connected with the compressor shell is installed on the fixed base, and a buffering plate is arranged in the fixed base so that the vibration influence generated by the compressor can be further reduced.

The invention discloses a prospective speed planning method based on a continuous trajectory. The method comprises the following steps: obtaining at least two continuous motion trajectories of an industrial controller; acquiring a first trajectory parameter of the first target trajectory and a second trajectory parameter of the second target trajectory; calculating first velocity vector data of the first target trajectory based on the coordinate information of the first space where the first target trajectory is located, and calculating second velocity vector data of the second target trajectory based on the coordinate information of the second space where the second target trajectory is located; based on the first velocity vector data and the second velocity vector data, determining a change result of the sub-direction of each axis of the second target trajectory relative to the sub-direction of each axis of the first target trajectory; and based on the first trajectory parameter, the second trajectory parameter and the change result, performing prospective speed planning on the motion trajectory of the industrial controller. The machining efficiency can be improved, and meanwhile the service life of equipment is prolonged.

The utility model discloses a ground reinforcing device for installation and construction of a fan tower drum, and relates to the technical field of installation and construction of fan tower drums. The device comprises two reinforcing rings which can be enclosed to form an annular structure, the two reinforcing rings are connected or disconnected through a plurality of connecting pieces, the reinforcing rings are provided with a plurality of limiting pieces and grounding rods which are the same in number, and each limiting piece comprises a limiting frame arranged on the reinforcing ring in a sliding mode; a lead screw is arranged on the reinforcing ring in a threaded mode, and the free end of the lead screw is rotationally connected with the limiting frame. When the device is used, vibration of the fan tower drum is preliminarily buffered through the multiple first buffering pieces together, vibration force generated by the fan tower drum on the reinforcing ring is transmitted to the grounding rod through the multiple second buffering pieces, then the vibration force is transmitted to the ground through the grounding rod, the vibration force and vibration frequency of the fan tower drum are reduced, and the service life of the fan tower drum is prolonged. Therefore, the phenomenon that the fixing structure is loosened is avoided.

The utility model discloses a noise reduction device for coal preparation plant chute, including installation support, still include buffer board, and the buffer board is rotatoryly installed below the lowest end of the transfer chute body, and the lowest end of buffer board is supported to set up damping device. The utility model discloses through the buffer board of elastic setting can change angle and buffer of the discharge end of transfer chute body to reduce the impact force of material at chute export position to avoid the violent impact of material direct delivery to the inside component of chute, and the problem of the serious noise pollution, the accelerated wear and tear of equipment key part, the shortened service life of further causing is avoided, through the setting filling cotton block below the transfer chute body, the elastic support is carried out to the transfer chute body, and the vibration frequency of transfer chute body is reduced, and the vibration noise of transfer chute body can also be absorbed.

The invention relates to the technical field of motorcycle shock absorbers, and discloses a four-spring shock absorber which comprises four supporting cylinders, a telescopic rod is arranged in an inner cavity of each supporting cylinder, the lower portions of every two adjacent supporting cylinders can move in the radial direction, and the four-spring shock absorber is characterized in that damping cavities are formed between the telescopic rods and the interiors of the supporting cylinders and communicated with the inner cavities; any one of the supporting cylinders is a high-damping supporting cylinder, a damper is arranged in the high-damping supporting cylinder, and the damping device has the advantages of being low in manufacturing cost and good in damping effect.

A kind of floating construction floor structure for sound insulation and vibration reduction of machine room equipment, the floating construction floor structure includes concrete floor structure layer, sound insulation and vibration reduction layer, waterproof structure layer, floating construction layer in turn from bottom to top distribution, the periphery of concrete floor structure layer is built with surrounding edge structure to form with vibration reduction floating construction installation area, the inner side of surrounding edge structure is pasted with frame isolation strip, sound insulation and vibration reduction layer is fixed in the vibration reduction floating construction installation area above concrete floor structure layer, waterproof structure layer is fixed above sound insulation and vibration reduction layer, floating construction layer is fixed above waterproof structure layer.The utility model can separate sound insulation and vibration reduction layer from building main body by installing frame isolation strip on one side of surrounding edge structure, so that floating construction floor structure plays the maximum acoustic effect, the lower part of floating construction layer is laid with sound insulation and vibration reduction layer, waterproof structure layer layer, can effectively improve the function of concrete structure floor sound insulation, waterproof, dustproof, effectively reduce the vibration frequency generated when equipment runs.

The utility model relates to the field of agricultural mechanical equipment, in particular to a threshing machine. A feeding groove is connected to the side of the front end of the threshing cavity, a straw discharging opening is connected to the side of the rear end of the threshing cavity, a supporting net is arranged on the inner side of the threshing cavity, a rotating shaft, a draught fan for driving threshing and the rear portion are arranged in the threshing cavity in the front-back direction, and a plurality of driving wheels are arranged in the portion, located in the threshing cavity, of the rotating shaft. The rear side of the draught fan is connected with an air suction piece, an opening of the air suction piece faces downwards, and a wind power adjusting plate used for adjusting the suction force is arranged on the air suction piece. A detachable vibrating screen and a vibrating mechanism for driving the vibrating screen to vibrate are mounted on the frame body and below the threshing cavity; dual wind power adjustment is designed, so that the device can be suitable for grains with different weights, dust and sundries can be sucked out, and mistaken discharge of grains is reduced; the vibrating screen capable of being quickly replaced is designed, so that the vibrating screen is suitable for grain particles of different sizes; the smashing knife is designed, straw winding and blocking are prevented, and the use efficiency is guaranteed.