21results about How to "Reduce vibration frequency" patented technology

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 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.

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 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.

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.

The present application relates to a kind of space camera carbon fiber bipod support device and space camera device, space camera carbon fiber bipod support device includes upper base, lower base, carbon fiber rod, lower base is two, each lower base is hinged on one carbon fiber rod, carbon fiber rod upper end is hinged on upper base;Carbon fiber rod is cylindrical, the side wall of carbon fiber rod includes multiple groups of composite lay-up, each group of composite lay-up includes the damping layer and carbon fiber layer of composite layer lamination bonding layer.By adjusting the lay-up material, lay-up thickness, lamination mode etc. of carbon fiber rod, the stiffness and damping adjustment of carbon fiber rod can be realized, so as to adapt to the requirements of different camera loads;Carbon fiber bipod support device can reduce the overall vibration frequency of camera load, in the form of overall vibration of camera load, most of the vibration energy is absorbed, so as to reduce the vibration energy acting on the weak part of camera itself, improve the vibration environment adaptability of camera load.

The application relates to the technical field of deep foundation pit construction, in particular to a supporting pile protection structure for deep foundation pit construction in a coastal silt zone, which comprises a water stop curtain device, the top of the water stop curtain device is provided with a corbel device, and the surface of the water stop curtain device is provided with uniformly distributed first stabilizing devices; the raw pile and the cooked pile are connected together through positioning pieces, which can increase the connecting strength and compactness between the raw pile and the cooked pile, reduce the probability of the existence of gaps on the overall surface of the water stop curtain device, improve the overall strength of the water stop curtain device, and enable the supporting pile to be more stably limited in situ; meanwhile, the supporting pile is arranged between the two adjacent cooked piles, and the supporting pile and the raw pile are connected together through the positioning pieces, so that even if the force received by the supporting pile is parallel to the raw pile or the included angle between them is small, the raw pile can also pull the supporting pile through the positioning groove and the positioning piece.

The utility model relates to the technical field of shock absorption and noise reduction mechanisms, in particular to an excavator with a shock absorption and noise reduction mechanism, a cab shell is mounted on the rear side of the upper portion of an excavator body, a base is mounted in the middle of the upper portion of the excavator body, a shock absorption damping rod is hinged to the upper portion of the base, and a movable seat is hinged to the upper portion of the shock absorption damping rod. A rubber sleeve is mounted on the lower side of the periphery of the movable seat; the excavator has the beneficial effects that when an excavator body works, vibration can be transmitted to a cab, the vibration is transmitted to the damping rods through the base, the vibration amplitude and frequency are preliminarily weakened through stretching and retracting of the multiple sets of damping rods, and the rubber sleeves protect the internal damping rods against external influences; the movable seat and the connecting seat are connected through the air bag, the air bag can well absorb vibration, the spring rod limits the movement range of the connecting seat under the influence of vibration, and when the connecting seat collides with the movable seat under the influence of vibration, the rubber pad can effectively absorb vibration and reduce noise.

This application discloses a fluid actuator and a wireless charger. The fluid actuator includes a piezoelectric pump, which comprises a pump housing, a base, and multiple sets of vibration components. The pump housing has an air inlet and an air outlet. The base is disposed inside the pump housing and divides the space inside the pump housing into multiple air chambers. Each air chamber is connected to at least one air inlet and at least one air outlet. Each air chamber is provided with at least one set of vibration components, which include an elastic substrate and a piezoelectric element. The elastic substrate is connected to the base, and the piezoelectric element is disposed on the elastic substrate. The piezoelectric element is used to drive the elastic substrate to vibrate when energized, so as to generate an airflow from the air inlet to the air outlet within the air chamber. This can enhance the heat dissipation efficiency of electronic devices and prevent heat from being unable to be dissipated in a timely manner.

The invention discloses a high-speed and high-precision drilling and tapping numerical control machining tool and disc tool magazine, and belongs to the technical field of workpiece machining equipment.The high-speed and high-precision drilling and tapping numerical control machining tool comprises a driving component, a mounting part, a moving assembly, a mounting frame, a three-axis feeding assembly and a mounting base, the three-axis feeding assembly is mounted at the top of the mounting base, and the mounting frame is further mounted at the top of the mounting base; the mounting frame is arranged behind the three-axis feeding assembly, the moving assembly is mounted at the front end of the mounting frame, the driving component is in transmission connection to the moving assembly, and the mounting part is mounted at the front end of the mounting frame. The problem that in the prior art, due to the fact that the degree of freedom of a machine tool is low, machining efficiency is low is solved. And the machining cost is reduced while the practicability is improved.

This utility model discloses a hook assembly and lifting equipment based on anti-disengagement of steel ingot molds, relating to the field of steel ingot mold lifting. The key technical points are: it includes an installation part and an elastic telescopic part located below the installation part. A hook is installed on the telescopic part of the elastic telescopic part. The elastic telescopic part has a high-strength spring and a damper. The effect is that when the hook lifts the steel ingot mold, the shaking and impact forces generated during the lifting process due to starting and stopping inertia and running vibrations are first transmitted to the elastic telescopic part. The high-strength spring in the elastic telescopic part absorbs some energy through its own elastic deformation, reducing the impact force. At the same time, the damper plays a buffering role, effectively dissipating the remaining energy, reducing the vibration amplitude and frequency, thereby reducing the periodic alternating load borne by the connection between the hook and the steel ingot mold, avoiding hook fatigue fracture, preventing relative displacement or disengagement between the steel ingot mold and the hook, and ensuring lifting safety.

The utility model relates to the technical field of steering systems, in particular to a lightweight steering engine shell structure capable of increasing structural strength. A lightweight steering gear shell structure capable of increasing structural strength is characterized in that a claw rib is arranged between one side of a driving gear pipe wall and a rack pipe wall, the claw rib is of a Y-shaped structure, a transverse rib at one end of the claw rib is connected with the rack pipe wall, the other end of the claw rib is forked to form an upper side wing plate and a lower side wing plate, and the upper side wing plate and the lower side wing plate are connected with the driving gear pipe wall. An upper side wing plate of the cleat rib is connected with the outer side of the pipe wall of the driving gear, and a lower side wing plate of the cleat rib is connected with the outer side surface of the bearing hole; a first reinforcing rib is arranged between the other side of the driving gear pipe wall and the rack pipe wall. Compared with the prior art, the horn rib structure is designed, so that the strength of the shell is obviously improved under the conditions that the thin wall thickness is kept and the weight of the shell is increased slightly; and meanwhile, the local thickness can be prevented from being too large, so that the casting defect caused by non-uniform cooling in the casting process can be better avoided.

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

The utility model discloses a bar transportation is with elastic buffer support device relates to transportation technical field. Bar transportation is with elastic buffer support device, including shallow, top plate, upper clamping seat, lower clamping seat and a plurality of limit seat, the inside of shallow is provided with elastic buffer subassembly, and elastic buffer subassembly includes three damper and four fixed link, when shallow meets uneven road surface or is subjected to the shock of vibration in elastic buffer subassembly, lower clamping seat will slide up and down because of the external force acting on the upper end inner wall of shallow, at this moment, the lug connected with lower clamping seat slides along the fixed link, and the buffer spring is compressed or stretched, and the buffer spring absorbs part vibration energy through elastic deformation, plays the primary buffering effect, and three damper starts simultaneously, and the vibration energy is consumed through the damping effect of internal medium, and the vibration amplitude and frequency of lower clamping seat are reduced, and the buffer spring is worked together, and the buffering effect is further improved, and the influence of vibration on bar is reduced.

This utility model discloses a rapid positioning device for laser marking of butterfly valve plates, belonging to the field of butterfly valve plate positioning. It includes a buffer assembly and a positioning assembly. The buffer assembly includes a mounting plate, with three first legs fixedly connected to the lower end of the mounting plate. Second legs are sleeved on the side surfaces of each of the three first legs. Two dampers are detachably mounted on the lower ends of the second legs, and buffer springs are sleeved on the side surfaces of the two dampers. A receiving block is detachably mounted on the upper end of the mounting plate, with a magnet installed inside the receiving block. A valve plate body is located on the upper end of the receiving block. Several guide grooves are equidistantly opened on the surface of the mounting plate. This utility model, through the combination of the buffer assembly and the positioning assembly, not only facilitates rapid clamping and positioning of valve plate bodies of different sizes, thereby enhancing the versatility of the positioning device, but also, through the cooperation of the above structures, facilitates shock absorption of the positioning device, thus ensuring stability and enhancing the safety of the positioning device.

The application provides a detection device and a terminal. The detection device comprises a shell, a cavity, a positioning column, a mounting bracket and a first damping assembly. The cavity is surrounded by the shell, and the positioning column, the mounting bracket and the first damping assembly are located in the cavity. The positioning column is fixedly connected with the shell and is arranged protruding relative to the inner wall of the cavity. The mounting bracket is connected with the positioning column through the first damping assembly to be fixed relative to the shell. The mounting bracket is used for being connected with a vibration source. The technical scheme of the application can reduce the transmission of vibration between the detection device and a carrier, thereby reducing vibration noise and the influence of vibration on the measurement of the detection device, and improving the comfort of a driver and a passenger.

The application discloses a heat dissipation type supporting mechanism for a computer host and a use method thereof, relates to the field of supporting equipment, and comprises a supporting assembly and a host assembly arranged at the upper end of the supporting assembly. One side of the host assembly is provided with a driving assembly. The driving assembly comprises an inverted recess type support. A ventilation opening is arranged at one side of the inner wall of the inverted recess type support. A filter screen plate is arranged at one side of the ventilation opening. A long groove is arranged at one side of the ventilation opening. The supporting assembly comprises a bottom cavity seat arranged at the lower end of the inverted recess type support. A lifting plate is slidably connected to the upper end of the bottom cavity seat. A supporting plate is arranged on the top surface of the lifting plate. One side of the top surface of the supporting plate is provided with a long cavity. The clamping component in the supporting assembly can stably support the host equipment, prevents shaking of the host equipment, and buffers the vibration force generated by the host in the bottom cavity seat, so that the protection and buffering effect of the host assembly is further improved, and the service life of the host equipment is prolonged.

The application belongs to the technical field of organic electroluminescent materials, and particularly relates to a thermally activated delayed fluorescence material and an organic electroluminescent device thereof, wherein through precise design of an outer carbazole derivative part deuterium substitution, efficient balance of cost, stability and photoelectric performance is achieved. In terms of photoelectric performance, the outer carbazole part deuterium substitution retains the hole transport characteristics of carbazole, the low vibration frequency of C-D bond inhibits non-radiative transition, and the quantum efficiency is improved. Meanwhile, the cost of the carbazole part deuterium substitution is also lower than that of full deuterium substitution, which is conducive to reducing the production cost.

The utility model provides a Karpin ship water propeller fixing device, which relates to the technical field of water propellers and comprises a propeller mounting support, a support is arranged at the top end of the long edge of the propeller mounting support close to two sides, an upper end fixing plate is mounted on the support, and a pressing structure is arranged between the top end of the upper end fixing plate and the support. A fixed pressing plate is arranged on the inner side of the support and located below the upper end fixing plate, and a shock pad is bonded to the bottom of the fixed pressing plate. A spring set composed of a plurality of spring pieces symmetrically arranged on the two sides is arranged between the fixing pressing plate and the upper end fixing plate, after the upper end fixing plate is installed, the spring set is compressed and continuously keeps exerting pressure on the fixing pressing plate, fixing of an engine and a pump body shell is achieved, shaking is avoided while vibration is absorbed while the telescopic guide sleeve rod is matched for stable installation, and the service life of the engine is prolonged. The multi-damping design brings more stable and comfortable driving experience to a user, the propeller and the ship body are effectively protected, and the service life of equipment is prolonged.