147results about How to "To achieve the purpose of vibration reduction" patented technology

The invention discloses a piezoelectric and electromagnetic induction dual energy feedback type magneto-rheological vibration damper which comprises a vibration damper body and a vibration damper controller. The vibration damper body comprises a cylinder barrel, a pressure supporting floating piston, a middle isolation floating piston, a piston rod, piezoelectric generation modules, a spring pressing plate, a force transfer spring, a spring clamping seat, a lower permanent magnet, a magnetic coil, an upper permanent magnet, a magnetism isolating plate, a piston, an excitation coil winding, an electromagnetic induction coil fixing rod and an electromagnetic induction coil. A control box is arranged on the outer wall of the cylinder barrel, the vibration damper controller is arranged inside the control box, and a rectifier, a storage battery charging circuit, a first controllable constant current source circuit and a second controllable constant current source circuit are further arranged inside the control box. The invention further discloses a control method of the piezoelectric and electromagnetic induction dual energy feedback type magneto-rheological vibration damper. The piezoelectric and electromagnetic induction dual energy feedback type magneto-rheological vibration damper has the piezoelectric and electromagnetic induction dual energy feedback function, can achieve not only a damping change function but also a rigidity change purpose, and has good vibration damping performance.

The present invention discloses a cylinder washing machine having a magneto-rheological active damper and belongs to the technology field of household appliances. The objective of the present invention is to improve damping mechanisms of a cylinder washing machine and then to provide a cylinder washing machine having a magneto-rheological active damper. Said washing machine comprising a machine housing and a washing cylinder equipped with asuspension spring and a matching block thereon is characterized in that at least two magneto-rheological active dampers are mounted below the washing cylinder. The magneto-rheological active dampers are connected to an electronic control unit which is connected to a sensor unit to form a closed loop control return. The damping force is adjusted real time and exactly, on the basis of vibration instances acquired, with a reflection velocity of 10-20 ms. Said cylinder washing machine is capable of adjusting damping force of a damper in time according to its vibration instances, then to achieve the purpose of eliminating or reducing vibrations of a washing machine. Said damper can be applied in a variety of cylinder washing machines.

The invention discloses an inerter capable of adjusting an inertance coefficient. The inerter comprises an upper lifting lug, a flywheel chamber, a flywheel, a lead screw, a stroke chamber, a lead screw nut and a lower lifting lug. The upper lifting lug is connected with the upper end of the flywheel chamber. The flywheel is located inside the flywheel chamber. The upper end of the lead screw is connected with the lower end of the flywheel. The lower end of the lead screw stretches out of the flywheel chamber and extends to the stroke chamber. The lead screw nut is located inside the stroke chamber. The lead screw nut is in screw-thread fit with the lead screw. The lower lifting lug is connected with the lower end of the stroke chamber. The periphery of the flywheel is provided with a rotor coil capable of rotating along with the flywheel. The periphery of the flywheel chamber is provided with a stator coil electrically connected with a power source. Rotation of the flywheel is restrained or accelerated by controlling the magnitude and direction of current generated by the power source, and therefore the inertance coefficient is adjusted to meet the requirement for practical engineering application. The inerter is suitable for being applied on a bridge to achieve the purpose of vibration reduction.

The invention discloses a vibration damper and a downhole drill comprising the same. The vibration damper comprises a first joint and a second joint, and the first joint and the second joint are respectively provided with a central through hole. The vibration damper is characterized in that the second joint comprises a piston body; the piston body and the first joint can be longitudinally and glidingly matched; a first cavity is formed between one end of the piston body, which faces the first joint, and the first cavity is communicated with the central through hole of the first joint. When the vibration damper is utilized, the second joint compresses high-pressure gas in the first cavity to enable the volume of the first cavity to generate changes, and the high-pressure gas in the first cavity absorbs vibration energy to achieve the goals of buffering and vibration damping; due to the fact that the pressure change of the high-pressure gas is smaller, the change of an acting force transferred to the first joint through the first cavity is smaller, and further, the peak value of an impact force transferred to the first joint by the second joint can be better limited, and the impact vibration is reduced so that the vibration damper has more superior vibration damping effect.

The invention discloses a vibration damping device of a gear transmission flywheel, which comprises a box body, a rack and a first transmission shaft, wherein the rack is erected at the two ends of the box body; the first transmission shaft is arranged in the box body through a bearing; and one end of the first transmission shaft is provided with a first gear engaged with the rack, and the other end of the first transmission shaft is provided with the flywheel. In the device, the rack and the first transmission shaft are erected on the box body; and one end of the first transmission shaft is provided with the first gear engaged with the rack, and the other end of the first transmission shaft is provided with the flywheel. Through rack-gear transmission, the vibration of reciprocating linear motion is converted into the rotational motion of the flywheel, so that the inertia property of a large mass block can be acquired by the flywheel with lower mass in the device; and when the rack moves in the reverse direction, the reverse motion of the flywheel can be prevented due to the higher inertia property of the flywheel. The aim of vibration reduction can be fulfilled in combination with the frictional damping effect of the transmission of the gear. In the device, a damper and the large mass block are not required and the cost is correspondingly reduced.

The invention belongs to the field of manufacturing of automatic lifting devices of engineering machinery and discloses an active safety seat system. A seat is controlled by a central processing unit and can automatically move in an all-around manner, and independent supports of four supports of the seat are relatively independent. When any side of a mechanical platform inclines and the front side or the rear side of the mechanical platform ascends, the seat is maintained horizontal integrally; when one side of the mechanical platform inclines, the seat moves towards a centrifugal force direction, in other words, the seat moves rightwards integrally when the mechanical platform inclines leftwards and moves leftwards integrally when the mechanical platform inclines rightwards; when the front portion of the mechanical platform ascends, the two front supports of the seat descend, the two rear supports of the seat ascend, and the seat is maintained horizontal; when the mechanical platform is collided by external force from the front side or the rear side, the left side or the right side, the seat moves forwards or backwards, rightwards or leftwards. The active safety seat system is widely applied to the fields of aviation, ships, automobiles and the like.

The present invention discloses a method for recognizing a car suspension vibration transmission path and contribution amount. The method comprises the steps of building a car suspension multi-body dynamics analysis model by using simulation software; setting an input output channel in a virtual test bench and performing vibration simulation; acquiring system speed admittance; calculating response of force and speed input into a car body; calculating to obtain a power flow input into the car body from each path; and performing list ranking on total power flow values of all paths that are obtained through calculation and are within a frequency research range, so as to analyze impact of each path on the vibration response of the suspension system. According to the method, the power flow is used as a uniform value to describe the vibration transmission process of the suspension system, the power flow represents vibration response in a form of scalar, and different transmission paths are not limited by directions and units any longer; and an absolute value of vibration transmission is obtained by using the power flow, and the power flow of a connection interface focused by the system is lowered so as to achieve shock absorption.

The invention discloses a ceiling lamp vibration reduction installer. The ceiling lamp vibration reduction installer comprises a lamp installation seat for installing a ceiling lamp and a bracket for supporting and fixing the lamp installation seat and connected to a ceiling; and the bracket comprises bracket sleeves fixedly arranged on a seat body in a sleeved manner and suspension arms connected to the outer sides of the bracket sleeves. The bracket furthermore comprises vibration reduction devices fixed to the ceiling and used for being installed and fixed to the upper ends of the suspension arms; each vibration reduction device comprises a barrel body and a vibration reduction piece arranged on the barrel body, each vibration reduction piece comprises a disc spring located at the bottom of the corresponding barrel body and a rubber spring arranged on the corresponding disc spring in a supported manner, the suspension arms penetrate through the disc springs and the rubber springs in sequence from the bottoms of the barrel bodies, and the upper ends of the suspension arms are tightened through fasteners; and the lamp is installed on the lamp installation seat, the lamp installation seat is supported by the bracket, the suspension arms of the bracket are matched with the vibration reduction devices, when vibration is generated, the disc springs and the rubber springs in the barrel bodies of the vibration reduction devices act jointly to conduct vibration reduction on movement of the suspension arms, and thus the purpose of vibration reduction on the ceiling lamp is achieved.

The invention provides an oil-gas suspension cylinder and a vehicle. The oil-gas suspension cylinder comprises a cylinder barrel, a throttling piston, a piston rod and a pneumatic piston, wherein thethrottling piston is arranged in the cylinder barrel, and is used for partitioning the space in the cylinder barrel into a roded cavity and a rodless cavity; the piston rod is located in the roaded cavity, and connected with the throttling piston; a piston rod barrel cavity is formed in the piston rod; the pneumatic piston is arranged in the piston rod barrel cavity slidably; the piston rod barrelcavity is partitioned by the pneumatic piston into a throttling cavity and a gas cavity independent of each other; and the throttling cavity is adjacent with the rodless cavity and communicates withthe roded cavity. Due to the technical scheme of the oil-gas suspension cylinder, oil-gas separation in the oil-gas suspension cylinder is effectively achieved, so that damping force in two directionsin the oil-gas suspension cylinder is more balanced, and the driving stability of the vehicle can be kept easily; the oil-gas ratio can also be accurately controlled, inflating and deflating are moreconvenient and faster, and maintaining is convenient; and cavitation by mixed gas in oil liquid on sealing pieces and parts can also be eliminated, and the service life of the oil-gas suspension cylinder is prolonged.

The invention discloses an aerodynamic damping type transport vehicle for fragile-goods transportation in commerce and trade. The aerodynamic damping type transport vehicle is characterized in that a damping inflator is welded to the center of transport vehicle chassis, an inflator piston is installed in the damping inflator, a damping pillar is fixedly installed on the inflator piston, a left damping balloon and a right damping balloon are communicated with the damping inflator through connecting air pipes, a left guiding cylinder is welded to the left end on the transport vehicle chassis, a right guiding cylinder is welded to the right end on the transport vehicle chassis, a left guiding column is installed in the left guiding cylinder, a right guiding column is installed in the right guiding cylinder, a goods loading plate is welded to the tops of the left guiding columns and the right guiding columns, the top end of a left pull spring is fixed on an upper left hanging frame, the bottom of the left pull ring is fixed on a lower left hanging frame, the top end a right pull spring is fixed on an upper right hanging frame, and the bottom of the right pull spring is fixed on a lower right hanging frame. The aerodynamic damping type transport vehicle is simple in structure, scientific and reasonable in design and convenient in use.

The invention discloses a suspended type monorail transit track beam, belongs to the technical field of rail traffic and aims at providing the suspended type monorail transit track beam. By improvingthe vibration absorbing performance of the suspended type monorail transit track beam, the train running comfort is improved. The suspended type monorail transit track beam comprises a track beam topplate, track beam web plates and track beam bottom plates, wherein the track beam web plates are arranged on the left and right sides of the track beam top plate, and the track beam bottom plates arearranged on the internal side walls of the track beam web plates; vibration absorbing rubber pads are arranged on the track beam bottom plates; running rails are arranged on the vibration absorbing rubber pads; and the running rails are connected to the track beam bottom plates through fastener systems. The suspended type monorail transit track beam is applicable to the suspended type monorail transit track beams.

The invention discloses a vibration-damping pedestal. The vibration-damping pedestal is composed of three bases, two V-shaped balance rods, a first connecting rod, a second connecting rod, a third connecting rod, a fourth connecting rod, a fifth connecting rod, weight balls, an installation plate and other components. According to the vibration-damping pedestal, springs, the weight balls and the multiple transmission connecting rods are introduced, multiple conversion of vibration energy generated by a power source is achieved, and the vibration energy is converted into various forms of energy to be consumed through the interaction of the multiple connecting rods, or the vibration energy is consumed only in a vibration-damping pedestal mechanism, so that vibration of a vibration source installed on the vibration-damping pedestal is reduced, the purpose of vibration damping is achieved, and accordingly the influence on the usability of equipment around the vibration source is reduced.

The invention is applicable to the antivibration device field and provides a multidirection antivibration vibration absorber. The vibration absorber comprises a shell, wherein the upper end of the shell is open, the lower end is sealed, the inside of the shell is provided with an elastic part with an inner cavity, the outer wall of the elastic part closely sticks to the inner wall of the shell, the upper end of the elastic part is sealed, the lower end is open, the upper end of the elastic part is higher than that of the shell, the upper end of the elastic part is connected with an antivibration product, and an air valve which can be communicated with the cavity of the elastic part is fixedly arranged on the shell. The invention also provides a lamp. The lamp comprises a lamp body, a support arranged on the lamp body and the vibration absorber. When the system which is composed of the vibration absorber and lamp provided by the invention is excited by multidirectional antivibration, the elastic part deforms to compress the air in the cavity so that the air in the cavity of the elastic part is heated, the vibrational energy of the vibration source generates damp heat through the deformation of the elastic part and the heat generated by the air compression of the cavity of the elastic part is gradually lost, thus achieving the aim of reducing the vibration.

The invention discloses a chassis of a split vertical indoor unit and the split vertical indoor unit, wherein the chassis of the split vertical indoor unit is arranged at the bottom of a casing of the split vertical indoor unit; an accommodation cavity which can be used for accommodating a compressor is defined by the chassis and the casing; a damping mechanism is arranged on the chassis and comprises a damping part and a damping layer; the damping layer is arranged on the chassis, and the upper surface of the damping layer is propped against the bottom wall and/or the side wall and parts of side wall of the compressor; the damping part is arranged on the chassis; and in addition, a mounting part of the compressor is elastically supported on the chassis through the damping part. According to the technical scheme disclosed by the invention, the strength of the chassis of the split vertical indoor unit can be improved, and further the anti-vibration performance of the split vertical indoor unit is improved.

The invention relates to an obstructive piston type particle damper. According to the technical scheme, the lower portion of a guide rod (8) is fixedly connected with a screw hole in the closed end of a damper shell (3) through a thread, and the lower end of the guide rod (8) is fixedly connected with a base through a thread. The upper end of a piston rod (1) penetrate a cover plate (6) and a damper cover (2) to be connected with an external mechanical vibrating system, and the upper portion of the guide rod (8) is movably sleeved with the lower portion of the piston rod (1). A cavity below the cover plate (6) is filled with particle damping materials (7). The piston rod (1) is a whole formed by a rod body and a rotary body, and the rotary body is a sphere or a spheroid or a rhombohedron. A round hole is formed in the lower end face of the piston rod (1) inwards along the axis, and the diameter of the round hole and the guide rod (8) are in clearance fit. The obstructive piston type particle damper is simple and reliable in structure, convenient to manufacture, low in cost, stable in damping effect and wide in application range, can generate large damping and adjust the magnitude of the damping, is suitable for vibration attenuation of periodic vibrating equipment, and is also suitable for vibration attenuation of impact vibrating equipment.

The invention provides a design method for vibration damping of a TBM cutter head, belonging to the vibration damping design field of a full-face tunnel boring machine. TBM crushes rock in extremely complex geological environment, under long-term bad working conditions, it frequently bears impact load and vibrates violently. Aimed at the problem of violent vibration of TBM cutter caused by the strong interaction between hob and rock in the process of rock breaking of TBM, this paper tries to reduce the vibration near hob from the point of view of replacing the material of parts and components.The material of wedge block connected with hob is replaced by damping alloy, and the vibration is reduced by the internal friction of damping alloy. In addition, through the simulation analysis of different structure cutter disks under different working conditions, the area with severe vibration on the cutter disks is found, and the material of hob connecting wedge block in this area is replacedby damping alloy, so as to reduce the cost of vibration damping, so as to achieve the purpose of replacing part of hob connecting wedge block material with damping alloy to damp vibration.

The invention discloses a fixing base with shock absorption function for a smart battery on an unmanned aerial vehicle. The fixing base comprises a smart battery, a smart battery holder, a smart battery fixing buckle, a flight control module group, a shock absorption silicone rubber gasket, smart battery positioning concave grooves and a screw. The fixing base is characterized in that the smart battery comprises a smart battery upper shell and a smart battery lower shell, the smart battery fixing buckle is arranged on the smart battery upper shell, and the smart battery positioning concave grooves are formed in the four edges of the smart battery lower shell. According to the fixing base with shock absorption function for the smart battery on the unmanned aerial vehicle, when the unmanned aerial vehicle flies, shock is isolated through the shock absorption silicone rubber gasket and an unmanned aerial vehicle body, so that transmission of shock is reduced or isolated, the shock brought by a power group and the shock brought due to various reasons in a flight are isolated through silicone rubber, so that the vibration frequency can be quickly attenuated to achieve the purpose of shock absorption, the principle lies in that the battery and the unmanned aerial vehicle body are subjected to shock absorption and isolation, and the self-weight of the battery is utilized to suppress the shock.

The invention provides a damping device and a lamp using the same. The damping device comprises a mounting disk, a guide post perpendicular to the mounting disk is fixedly arranged on the mounting disk, the guide post is arranged in a mounting sleeve in a penetrating mode, a spring located in the mounting sleeve is sleeved on the guide post, the upper end of the spring abuts against the upper end of the mounting sleeve, the lower end of the spring abuts against a blocking member which is fixedly arranged at the lower end of the guide post, and the blocking member is arranged in the mounting sleeve. According to the lamp using the damping device, the lamp can shake up and down when receiving vibration shock, and the mounting sleeve can shake up and down along with the lamp, so that the lamp is damped, components with poor shock resistance such as a bulb and an electric ballast in the lamp can be prevented from falling off due to the vibration shock received by the lamp, normal usage of the lamp is guaranteed, and the service life of the lamp is prolonged.