73results about How to "Improve vibration absorption capacity" patented technology

The invention relates to a multi-shaft linkage numerically-controlled machine tool, in particular to a turning, drilling and milling combined machine tool for machining a flange. The turning, drilling and milling combined machine tool for machining the flange comprises a lathe bed, a workbench and a workbench base, wherein the workbench and the workbench base are arranged on the lathe bed. Stand columns and a cross beam are arranged on the workbench. A double-stand-column symmetrical structure is arranged on the workbench. The cross beam is a fixed beam. Guide rails are arranged on the two sides of the lathe bed. The stand columns are arranged on the guide rails to support a machine tool head. A C-shaped shaft box, a tool rest, a servo feeding system, a workbench clamping system, a hydraulic system and a button station are further arranged on the lathe bed. The lathe bed is provided with the vertical tool rest. The tool rest is of a double-ram structure, a turning ram tool rest body is arranged on the right side, and a milling ram tool rest body is arranged on the left side. The basic part of the machine tool is of an integrally cast structure, and thus the machine tool has the characteristics of being high in strength, rigidity, vibration resistance and vibration absorption. The turning, drilling and milling combined machine tool also has the advantages that the number of control shafts is large, the functions are complete, the reliability is high, and the stability performance is good.

The invention relates to a polyurethane mixed component applied to a slow-rebound damping pad and a preparation method of the polyurethane mixed component and belongs to the technical field of polyurethane application. The polyurethane mixed component applied to the slow-rebound damping pad is composed of a component A and a component B, and the weight ratio of the component A to the component B is 100 (50-60); the component A is composed of polyether polyol A, polypolyols, a cross-linking agent, a chain extender, a foam stabilizer, a catalyst and a foaming agent; the component B is composed of polyether polyol B and isocyanate. The pad made of the polyurethane mixed component is good in rebound effect, and the shock absorption capacity and the hand feeling are improved; the invention further provides a preparation method which is simple, easy to conduct and capable of saving energy and protecting the environment.

The invention discloses a vibration absorber for a steering wheel and a vehicle with the vibration absorber. The vibration absorber comprises a mounting plate and a vibration attenuation component, a first plate and a second plate are arranged at the front end and the rear end of the mounting plate respectively, the vibration attenuation component is connected between the first plate and the second plate and comprises a vibration attenuation part, an elastic part and an adjusting part, the front end of the elastic part is fixed with the adjusting part, the rear end of the elastic part is fixed with the front side of the vibration attenuation part, the rear side of the vibration attenuation part is fixed with the second plate, and the adjusting part is arranged on the first plate and capable of moving back and forth thereon. The vibration absorber can well absorb vibration energy of the steering wheel, vibration energy can be converted into other types of energy such as heat energy which can be dissipated, and accordingly, energy and vibration can be absorbed. According to vibration frequency of different steering wheels and frequency fluctuation of the steering wheels due to the using loss of the vehicle, frequency can be adjusted to match with the vibration absorber, so that the vibration absorber can be applicable to different steering wheels.

The invention relates to a hydrodynamic-hydrostatic suspension mainshaft bearing which mainly comprises a mainshaft and a bearing, wherein the surface (opposite to the mainshaft) of the bearing is provided with a plurality of hydrostatic oil chambers, each hydrostatic oil chamber is respectively communicated with a lubricating-point pipeline by a bearing throttler, and each lubricating-point pipeline is connected with an oil body lubricated supply system by a main bearing pipeline; and the mainshaft bearing is characterized in that one or more overflow pressure regulating balancing holes are arranged on the hydrostatic oil chamber, and the overflow pressure regulating balancing holes are communicated with the oil body lubricated supply system. The hydrodynamic-hydrostatic suspension mainshaft bearing has the beneficial effects that an machine tool using the mainshaft bearing is high in rotation accuracy; the motion accuracy of the mainshaft is 0.1mu m-0.5mu m, the motion accuracy of the mainshaft subjected to accurate grinding can reach Ra0.01mu m, and the processing roundness error is 0.1mu m; the anti-vibration performance is strong: the adopted oil has a great vibration-absorbing capacity, therefore, the influence caused by outside vibrations can be weakened; the carrying capacity is large; the hydrostatic and hydrodynamic-hydrostatic mainshafts have strong carrying capacities, therefore, the mainshaft is suitable for the high-power and full-load cutting of various machine tools; the rigidity is high; and the mainshaft bearing is strong in oil rigidity.

The invention relates to a passive fluidic resistor suspension with an equivalent mechanical structure, and belongs to the technical field of engine supporting structures. The passive fluidic resistor suspension with the equivalent mechanical structure mainly comprises an external rubber mainspring, an upper connecting bolt connected with the external rubber mainspring, an external supporting spring, an upper fluid chamber, a lower fluid chamber, an inner gas chamber, an inner spring, a mass block and the like, wherein the inner spring and the mass block are arranged in the inner gas chamber. The upper fluid chamber which tightly abuts against the upper end face of a partition board between the upper fluid chamber and the lower fluid chamber, an external gas chamber and the inner gas chamber are arranged in sequence from outside to inside. The lower fluid chamber tightly abuts against the lower end face of the partition board between the upper fluid chamber and the lower fluid chamber. An inertia channel which enables the upper fluid chamber to be communicated with the lower fluid chamber is arranged in the partition board between the upper fluid chamber and the lower fluid chamber. According to the passive fluidic resistor suspension with the equivalent mechanical structure, the notch frequency of the fluidic resistor suspension is constant within a low frequency range, but the dynamic stiffness of the fluidic resistor suspension is reduced as far as possible within a notch frequency range; in addition, the dynamic stiffness of a corresponding peak frequency is reduced as far as possible, the noise lowering effect and the damping effect of the engine fluidic resistor suspension are improved within the low frequency range, and the fatigue performance and the creep property of the fluidic resistor suspension can also be improved.

The invention belongs to the technical field of precise machining and testing, and provides a precise indexing table based on transmission of a high-precision helical standard gear and a worm and an assembling method. Open-loop control is adopted, a high-precision harmonic motor is adopted for driving, and the worm and the helical gear with a self-locking function are adopted for helical angle engagement transmission. A tension spring anti-backlash mechanism is used for eliminating the backlash between the worm and the helical standard gear and reverse idle stroke errors of the indexing tableare reduced. The radial benchmark of the indexing table adopts a high-precision dense ball shaft system structure, and the radial comprehensive error of the indexing table is smaller than 0.5 micrometer due to the homogenizing effect of the errors. The axial benchmark adopts a plastic-coated sliding bearing structure which has high rigidity and a shock absorption function. The indexing precision of the well assembled indexing table can reach 10 seconds or below. The precise indexing table based on transmission of the high-precision helical standard gear and the worm can realize intermittent indexing or continuous indexing of any angle, has the advantages of being simple in structure, high in indexing precision, high in structure rigidity, stable in indexing precision and low in cost, and can be applied to light-loaded precision processing and test occasions.

An air conditioner having a cooling capacity of about 11 kW to about 16 kW, a mixed refrigerant in which R32 is contained at a content of about 50% or more is used as the refrigerant, and the refrigerant pipe is made of a ductile stainless steel material having a delta ferrite matrix structure of about 1% or less on the basis of a grain area.

The invention discloses a spinule type wall climbing robot with a bionic vibration absorption structure. The wall climbing robot comprises a body, a tail part arranged on the body and rotating wheels arranged on the two sides of the body, wherein each rotating wheel comprises spinule pieces and spacers, which are arranged at intervals; each spinule piece comprises a spinule, a flexible part and a turntable arranged on a circular shaft of the body; spinules are connected to the side edges of the turntables through the flexible parts. According to the wall climbing robot, the body and the tail part of the robot are connected through a vibration absorption unit, and the tail part has a balancing function in a climbing process of the robot; a bionic design for mixed characteristics of rigidity and flexibility of a living organism is adopted for the vibration absorption unit, and the vibration absorption unit is formed by filling a flexible material around a rigid material structure such as a vertebral column, and has vibration resisting and absorption functions; the spinule pieces, the spacers, the body and the tail part of the robot are made from falling-resistant materials, so that the overall falling resistance and the vibration absorption capability of the robot are improved, and the robot can fall from a great height without damage.

The invention relates to the technical field of fluid filtering, in particular to a fluid filter and a system thereof. The fluid filter comprises a filter tank and an elastic body. The filter tank isprovided with an in-tank space. The elastic body is arranged in the in-tank space. When the in-tank space reaches a certain pressure value, the volume of the elastic body can be compressed. An inlet pipeline and a flowing-out pipeline are arranged on the top or the bottom of the filter tank and communicate with the in-tank space. The system of the fluid filter comprises a hydraulic pump and the fluid filter. The liquid outlet end of the hydraulic pump communicates with the inlet pipeline of the fluid filter. According to the purposes, the fluid filter and the system of the fluid filter are provided, and the technical problem that the fluid pulse is high in the prior art is solved.

The invention discloses a manual-shift speed reducer of a crowned-gear clutch for large-size petroleum drilling machines, which comprises a case, an input shaft system, an output shaft system, a shift operating mechanism, a lubricating system, a ventilator system and a measuring rod system. A lower case, a middle case and an upper case are assembled from bottom to top vertically to form the case, the input shaft system, the output shaft system, the shift operating mechanism, the lubricating system, the ventilator system and the measuring rod system are arranged in the case, the input shaft system is used for inputting power and realizing high revolution speed, the output shaft system is used for outputting torque and realizing low revolution speed, and the shift operating mechanism is used for changing the transmission ratio of the input shaft system to the output shaft system. The manual-shift speed reducer of the crowned-gear clutch for the large-size petroleum drilling machines has wide applicable range of environmental temperature, is capable of running on open sites full time, is wide in applicable range of environmental temperature and has the advantages of high bearing capacity, long service life, large output torque, high transmission efficiency, low operation noise and vibration of the case, fine tightness, high exchangeability, convenience in installation, flexibility and stability in shift.

The invention provides a high-speed train wheel vibration absorbing device based on photonic crystals. The device comprises an upper cover plate, a lower cover plate, a 'dot defect' localized photoniccrystal vibration absorbing assembly, and a Bragger-type photonic crystal vibration absorbing assembly which is arranged in the space formed by the upper cover plate, the lower cover plate and the 'dot defect' localized photonic crystal vibration absorbing assembly. The device has the advantages of being simple in overall structure and convenient to produce, the device has better vibration absorbing and noise reduction effects on high-speed train wheels within medium high frequency domains, the requirements on working environments are lower, and the device can be used for reducing the noise of the high-speed train wheels, improving the noise and vibration characteristics of the high-speed train wheels, improving the working environment of workers and the like.

The embodiment of the invention discloses a vibration reducing device for a helicopter rotor blade, and relates to the technical field of helicopters. The vibration reducing device for the helicopter rotor blade comprises blade girders (1), a shock absorption device (2), bolts (3) and nuts (4), and is characterized in that the shock absorption device (2) is fixed inside the blade girders (1) through the bolts (3) and the nuts (4). The tuned mass of the shock absorption device plays a role in amplifying movement of a main mass block, the shock absorption device is installed at the blade tip position and can generate the highest torque to the root of the blade, the shock absorption effect is enhanced, and accordingly the waving vibration level of the blade can be effectively reduced.

Disclosed is a diamond saw capable of reducing noise by installing a damper for absorbing vibration in a shank. The low noise diamond saw comprises: a shank formed of a circular metallic plate; and a diamond blade bonded to an outer circumferential surface of the shank, in which a damper is partially bonded to one or both of upper and lower surfaces of the shank by a spot welding. Said one or both of the upper and lower surfaces of the shank may be provided with recesses having a thickness enough for an uppermost portion of the damper not to be higher than an uppermost portion of the diamond blade According to another embodiment of the present invention, a low noise diamond saw comprises: a shank formed of a circular metallic plate; and a diamond blade bonded to an outer circumferential surface of the shank, in which a plurality of recesses having a predetermined depth are formed in upper an d lower surfaces of the shank in correspondence with each other in a circumferential direction, a hole having a diameter smaller than that of the recess is formed in the recess, and a damper is mounted in the hole so that a clearance may not be generated between a surface of the recess and a surface of the damper. In the diamond saw, noise is reduced as the number of the dampers is increased.

[Solution] A centrifugal-pendulum-type vibration absorption device (10) constitutes a motion-starting device (1) together with a damper mechanism (8) that includes: a plurality of rotating elements including a drive member (81) connected to an engine via a lock-up clutch (9) and a driven member (83) connected to a transmission; and a first and second coil spring (SP1, SP2) that transmit torque between the drive member (81) and the driven member (83). The centrifugal pendulum-type vibration absorption device includes a support member (11) that rotates as a single unit with the driven member (83) of the damper mechanism (8) and a mass body (12) that is supported by the support member (11) so as to be able to oscillate freely, and is designed so as to have an effective degree greater than the degree of vibration which is generated by the engine and which is to be damped, by a correction quantity related to the hysteresis of the damper mechanism (8).

The invention provides a corrugated cardboard printing machine and a multipoint scraper-adjusting and ink-distributing device thereof, which can solve the problem that ink distributing is influenced because the laminating degree of a film scraper and an anilox roller are nonuniform on the full length of the anilox roller in the prior art. The technical scheme is characterized in that at least two sets of scraper frame adjusting devices are arranged on a supporting frame, each scraper frame adjusting device comprises a supporting frame guiding pipe, a supporting shaft, an adjusting nut and an adjusting handle, wherein the supporting frame guiding pipe penetrates through the supporting frame and is fixed with the supporting frame, a part of the supporting shaft is installed in the supporting frame guiding pipe, one end of the supporting shaft and the scraper frame are fixed, the other end of the supporting frame in the supporting frame guiding pipe is provided with the adjusting nut, the adjusting nut and the supporting frame guiding pipe are connected through screw threads, and the adjusting handle penetrates through the adjusting nut and is in threaded connection with the supporting shaft. In the invention, because a plurality of scraper frame adjusting devices are additionally arranged on the scraper frame, the precision adjustment of the scraper frame and the ink distributing effect are improved.

A novel subway vibration reduction track structure and a vibration absorber device are disclosed. The novel subway vibration reduction track structure comprises a pouring type shield tunnel foundation, a track plate is arranged above the shield tunnel foundation, two steel rails which are oppositely arranged are arranged on the track plate, a plurality of rectangular openings used for vibration reduction installation are formed in the inner bottom of the shield tunnel foundation, and foundation seats are arranged in the rectangular openings. The foundation seats are connected with an upper disc through a main vibration reduction assembly, and the upper disc is connected with the bottom of the track plate through a locking piece. The prefabricated track plate is placed on the foundation, the main vibration reduction equipment is installed in the gap between the foundation and the track plate through the multiple assembling openings formed in the track plate, and by adjusting a nut ring, vibration absorption springs in the main vibration reduction equipment and the magnetic layers which are arranged in the main vibration reduction equipment and repel each other in magnetism achieve the effect of effectively counteracting the vibration force of the track plate and the foundation generated during vibration; the effective installation of the vibration absorber can be ensured while the installation of the track plate is not influenced.

The invention relates to an assembly type all-direction same-frequency steel rail damping vibration absorber which comprises a shell, wherein the shell is installed on rail webs on the two sides of a steel rail and matched with the surface shape of the rail webs of the steel rail, the outer side face of the shell is flush with the rail bottom of the steel rail, an installation space is defined in the shell, the two ends of the shell are open, and the two ends of the shell are detachably connected with end covers; two elastic bodies which are cylindrical, wherein the axes of the elastic bodies are parallel to the length direction of the steel rail, and one end of each elastic body is detachably arranged on the inner side wall of the corresponding end cover; and a mass block which is installed in the installation space, wherein the two ends of the mass block are detachably connected with the other ends of the two elastic bodies in a one-to-one correspondence mode. A gap reserved between the mass block and the shell is larger than or equal to 5 mm. According to the fabricated all-direction same-frequency steel rail damping vibration absorber, the cutting reducing performance of rubber is utilized, so that the rigidity of a steel rail vibration absorber product is reduced; through the assembly type replaceable parts, the resonant frequency is rapidly adjusted, material waste is reduced, the vibration absorbing performance is better, and the application range is wider; and the elastic bodies and the mass block are both located in the shell, so that the service life is prolonged.

The invention relates to a composite plastic sports floor manufacturing method. A composite plastic sports floor takes PVC resin, an environmentally friendly plasticizer and an environmentally friendly stabilizer as base-materials, different types of additives are added as different structural layers, the different structural layers are bonded by a thermal fusion bonding mode to form the compositeplastic sports floor, 2450 MHz microwave is applied during heat curing, and the thermosetting efficiency of the sports floor is increased. The composite plastic sports floor has the advantages of easy cleaning, strong ultraviolet resistance, high aging resistance, high comfortableness, good resilience, and good vibration absorption effect.

The invention discloses a damping rack and detection equipment adopting the damping rack. The damping rack comprises a lower steel frame, a damping supporting assembly, a rack bearing platen and a detection bearing bottom column. The four damping supporting assemblies are arranged at four corners of the lower steel frame, the rack bearing bedplate with the low temperature deformation coefficient is arranged on the four damping supporting assemblies in a height-adjustable mode, and the jacking module is arranged at a jacking notch formed in the damping bottom plate and used for receiving and jacking a to-be-tested piece. The detection equipment comprises a functional outer box, a damping rack, a platform module, a transfer module and an optical detection device. The overall stability and vibration absorption performance are improved through the damping rack, the damping rack and the functional outer box of the detection equipment are arranged at intervals or are in non-rigid connection, the requirements of the detection equipment for stability, low vibration and low deformation are met, and basic possibility is provided for high-precision detection equipment.

The invention belongs to the technical field of vibration and noise reduction of rail transit and discloses a multidirectional hydraulic vibration reduction dynamic vibration absorber structure of a steel rail. The structure is arranged on two sides of a rail web of the steel rail. An elastic damping body is included. The elastic damping body is tightly attached and fixed to the steel rail, one ormore hydraulic vibrators are evenly embedded in the elastic damping body at intervals, each hydraulic vibrator comprises an even number of hydraulic telescopic rods, every two hydraulic telescopic rods are collinearly and oppositely connected together to form a spherical array structure, each hydraulic telescopic rod can be divided into a piston rod and a piston cylinder, and damping oil is arranged in each hydraulic telescopic rod. Vibration energy is consumed through telescopic movement of the hydraulic telescopic rod, a vertical vibration reduction effect can be achieved on a straight section of a railway, a transverse and vertical bidirectional vibration reduction effect can be realized on a curve section of the railway, and meanwhile an auxiliary anti-bending and anti-torsion effectcan be achieved.

The invention discloses an automobile power assembly suspension device, which comprises two assembly suspensions, and the two assembly suspensions are symmetrically installed on the engine. Device, core and bottom plate, the elastic main spring and the core are fixed by vulcanization, a cavity is formed between the elastic main spring and the bottom plate, the buffer device is installed inside the core, and the outside of the bottom plate A fixed plate is installed, the fixed plate is connected to the frame by welding, the core is installed in the limit cover, and the powertrain suspension can effectively reduce vibration and noise under various working conditions, especially Especially in idling conditions and general acceleration and cruising conditions, the vibration and noise reduction effect is good, especially the use of a new type of elastic main spring can better reduce vibration and noise, and the service life is greatly improved, making the driving environment comfortable for drivers and passengers The degree is more perfect, and the service life of vehicle components is greatly improved.

The invention provides a torsional vibration damper and a gasoline engine with a variable compression ratio, and the torsional vibration damper comprises hubs which are symmetrically arranged around a central axis; the inertia rings are symmetrically arranged on the outer side of the hub around the central axis; the first damping rubber is arranged between the hub and the inertia ring; one end of the inertia ring is coated with the support, and a cavity is formed by the support and the hub; and the second damping rubber is filled in the cavity.

The invention relates to the technical field of manufacturing of hydraulic machine stand columns, in particular to a novel hydraulic machine stand column structure. The novel hydraulic machine stand column structure comprises an upper face panel, a lower face panel, a stand column body defined by wall panels and a sliding block guide rail supporting plate. The upper face panel and the lower face panel are fixedly connected to the upper end and the lower end of the stand column body correspondingly. The sliding block guide rail supporting plate is fixedly connected to the side face of the stand column body. A rib plate structure is fixed into the stand column body. The rib plate structure is formed by symmetrically lapping four rib plates in a staggered mode. Five square cavities are formed by the four rib plates. Locating holes, a pull rod hole and a wire hole are formed in the cavities. The stand column body, the upper face panel, the lower face panel, the sliding block guide rail supporting plate and the rib plate structure are fixedly connected in a welded mode. The novel hydraulic machine stand column structure is simple in structure, convenient to operate and stable and reliable in operation. By arranging the rib plate structure in a hydraulic machine stand column, the equivalent stiffness of the stand column and the vibration absorption capacity of the stand column are improved. Consequently, vibration of a machine body can be effectively reduced and absorbed during transient load missing.