65results about How to "Play the role of vibration isolation" patented technology

The invention relates to a five-dimensional vibration isolation device which is suitable for equipment arranged on a dynamic carrier. Aiming at the problem of five-dimensional vibration of the equipment on the dynamic carrier, one hybrid mechanism-based vibration isolation platform is arranged between an equipment mounting platform and a carrier connecting platform to realize five-dimensional vibration isolation. The vibration isolation platform consists of the equipment mounting platform (1), a middle platform (2), the carrier connecting platform (5), six branched chains comprising vibration isolation subsystems and a constraint branch containing no vibration isolation subsystem, so that vibration isolation along spatial three-movement two-rotation directions can be realized. Each vibration isolation subsystem in each branched chain is formed by connecting a linear spring (3) and a magneto-rheological damper (4) in parallel; and control over the entire platform is realized by changing a damping coefficient of the magneto-rheological damper. Since the movement and the rotation of a hybrid mechanism are fully decoupled, the control of the system is relatively simple. Experiments prove that the vibration isolation platform using the five-dimensional vibration isolation device enables that a vibration signal transferred to the equipment by the carrier is obviously weakened, so that the vibration isolation platform has the advantage of effectively and reliably improving the dynamic environment of the equipment of the dynamic carrier.

The invention relates to a large-span steel connecting bridge and an integral hoisting method thereof. One end of a steel connecting bridge is connected with an original building through a high-strength bolt, and the other end is connected with a new building through a lead core rubber support saddle; an integral hoisting method is adopted for the hoisting of the steel connecting bridge, before a caterpillar crane enters a main hoisting position, a truck crane is used for raising the steel connecting bridge so as to move the steel connecting bridge to the installation position, and until the steel center stays in the main hoisting range of the caterpillar crane, the steel connecting bridge is integrally hoisted to the place through the caterpillar crane. Through a shock-isolation support saddle and a damper, the large-span steel connecting bridge can be arranged between the original building and the new building when the installation position is not previously reserved, the difficulties such as the restriction of the construction field, the restriction of the underground structural complexity and the restriction of the narrow integral hoisting space structure and the like can be overcome during the hoisting process, the normal use of the original building is ensured, and the construction period is shortened. The method can be widely applicable to the construction of the connecting bridge which is established on the present building.

The invention discloses a vibration isolation structure based on bistable curved beams. A plurality of cell element structures are sequentially connected and regularly arranged in a plane or space to form the vibration isolation structure. Each cell element structure comprises a supporting rod, the bottom end of each supporting rod is connected with the top of the corresponding bistable curved beam, the two ends of each bistable curved beam are connected with the two ends of a connecting rod correspondingly, and a spring is connected between the top of each bistable curved beam and the corresponding connecting rod. The vibration isolation structure is simple in structure and easy to manufacture, the positive stiffness and the negative stiffness in a whole vibration isolation system are easy to adjust, then the force corresponding to a quasi-zero stiffness interval is adjusted so as to adapt to different loads, meanwhile, the minimum unit modular design can adapt to different structural environments, and the engineering requirements are met.

The invention discloses a double-layer active-passive electromechanical integrated type vibration isolation device. The double-layer active-passive electromechanical integrated type vibration isolation device comprises a passive upper rubber vibration isolator (a), an intermediate framework structure (c), a mounting bottom plate (d), four electromagnetic exciters (b), integrated type control signal conditioning equipment and acceleration signal conditioning equipment (f), the intermediate framework structure (c) is arranged between the upper rubber vibration isolator (a) and the mounting bottom plate (d), the four electromagnetic exciters (b) serve as active executing mechanisms symmetrically arranged at the left and right sides of the intermediate framework structure (c), and the integrated type control signal conditioning equipment and acceleration signal conditioning equipment (f) are symmetrically arranged in front and rear grooves of the intermediate framework structure (c). The double-layer active-passive electromechanical integrated type vibration isolation device can well inhibit the vibration due to wide-frequency band external disturbance excitation, and the double-layer active-passive electromechanical integrated type vibration isolation device is mainly used for controlling the vibration of different kinds of marine diesel engines, steam turbines, pumps, the like rotating and reciprocating mechanical equipment, nuclear emergency power generator sets and the like large power equipment.

The invention aims to provide an intelligent shock absorber of a pipeline. The intelligent shock absorber comprises a pipe clamp, a bracket, a central frame structure and a low-layer rubber shock absorber. The pipe clamp is a circular structure comprising two semi-circular pipe clamps, the pipeline passes through the interior of the annular structure, a rubber clamping ring is mounted between the annular structure and the pipeline, the pipe clamp is fixed on the bracket, the bracket is fixed on the central frame structure, the low-layer rubber shock absorber is mounted between the central frame structure and a base structure, a power amplification module is arranged in the central frame structure, inertia type electromagnetic actuation modules which are connected with the power amplification module are arranged respectively on two sides of the power amplification module, and an acceleration sensor is arranged on the top plate of the central frame structure and connected with the power amplification module. The intelligent shock absorber is mainly aimed to isolate the pipeline system shocks which are ubiquitous on ships, and is capable of effectively controlling the transfer of broadband shocks from a pipeline system to a ship structure.

A vibration isolation platform composed of the two sets of inclined springs comprises the two sets of inclined springs, a vertical spring and an object carrying platform, the two sets of inclined springs are arranged at the two sides of the object carrying platform and comprise the two pairs of inclined springs which are symmetrically arranged up and down, the two pairs of inclined springs comprise two pairs of inclined springs which are symmetrically arranged up and down, and the two pairs of inclined springs comprise four inclined springs which are symmetrically arranged left and right. Oneend of each inclined spring is movably connected with the object carrying platform, and the other end is movably connected with a movable seat I. The vertical spring is arranged at the lower portion of the object carrying platform, one end of the vertical spring is movably connected with the lower portion of the object carrying platform, and the other end is fixedly connected with a movable base II. According to the vibration isolation platform, the inclined springs are adjusted by adjusting the positions of the sliding pieces and the supporting columns, so that the negative stiffness generated by the two sets of inclined springs counteracts the positive stiffness of the vertical spring to achieve the purposes of zero dynamic stiffness, a wider zero-stiffness characteristic interval and abetter vibration reduction effect, and the vibration reduction performance of the vibration isolation platform is improved.

The invention provides a multifunctional star arrow adapter which comprises an upper port, a lower port and a plurality of damp rods, wherein the upper port is used for connecting a satellite, and the lower port is used for connecting a carrier rocket. The star arrow adapter is mounted between the satellite and the carrier rocket, so that the thrust supplied by the rocket can be transferred, a structure bearing function can be achieved, a vibration isolating function can be achieved, and various vibrations and impact loads transferred from the rocket to the satellite can be isolated or reduced in a launching process, so that the dynamic environment of the satellite can be effectively improved, and the protection for the satellite can be realized. The multifunctional star arrow adapter is integrated with bearing and vibration isolating functions, is light in weight, is free from external energy supply and is suitable for aerospace engineering application.

A suspension system of a suspension electric vehicle comprises a mounting beam, a vibration damping mechanism, a load bearing mechanism and a torsion resistance mechanism, wherein the vibration damping mechanism is integrally mounted on one end of the load bearing mechanism, the other end of the load bearing mechanism is connected to the power system, the vibration damping mechanism is connected to the mounting beam, one end of the torsion resistance mechanism is connected to the power system, and the other end of the torsion resistance mechanism is connected to the subframe. The load-bearingelement skeleton I and skeleton II are arranged on both sides of the power system, the damping element I is arranged on the skeleton I, and the damping element II is arranged on the skeleton II, so that the mounting beam is more force-bearing and the structure is more stable. By adjusting the direction of the rubber bushings in the damping element I and the damping element II, the stiffness of theentire suspension system in all directions is more reasonable, the limit capacity of the suspension system to the dynamic system is improved. The vibration damping element I is arranged on the frameI and the vibration damping element II is arranged on the frame II, so that the force on the mounting beam is more reasonable and the structure is more stable. The design of the anti-torsion mechanismimproves the anti-torsion ability of the whole system. The invention also discloses a method for using the suspension system of the suspension electric vehicle.

The invention discloses a multi-axis cascade connection direct driving PCB drilling machine. The multi-axis cascade connection direct driving PCB drilling machine comprises a bed, a the bed is provided with a beam, the beam is provided with a beam motor fixing plate, an X-axis linear motor is arranged between the beam and the beam motor fixing plate, the bed is provided with a plurality of cascade connection drilling hole structures connected through cascade connection shafts, every cascade connection drilling hole structure comprises a drilling hole assembly and a Z-axis linear motor, the bed is provided with a Y-axis motion platform, and a Y-axis linear motor is arranged between the bed and the Y-axis motion platform. The multi-axis cascade connection direct driving PCB drilling machine is designed by taking factors such as manufacturing cost, operating cost and machinability into consideration, solves the problems of high load and high vibration due to high-speed driving, achieves optimum compatibility among a control system, a motion system and a mechanical system, can meet requirements of high-quality multi-level drilling hole machining, and overcomes technology defects of low accuracy and poor stability of multi-axis drilling hole machining compared to single-axis machining by improving the cascade structure so as to further improve multi-axis machining accuracy as well as maintain high machining efficiency.

The invention belongs to the technical field of flow induced vibration and relates to a device for pipeline vibration testing. The device comprises a driving mechanism, vibration isolation sections attwo ends, a U-shaped bent pipe section, a test piece, a visual pipe section, a pipeline supporting structure and a pressure measuring system, wherein the vibration isolation sections are arranged attwo ends of the device, the visual pipe section, the test piece and the U-shaped bent pipe section are sequentially connected between the two vibration isolation sections, the pressure test system isinstalled before and behind the test piece, the driving mechanism is arranged at one side of the U-shaped bent pipe section and is connected with the vibration isolation section, and the pipeline supporting structure is used for supporting the whole device. The device can simulate a vibration problem caused by the change of a flow field inside a pipeline and verify the numerical calculation modelof pipeline vibration. With a simple method adopted, the state of the pipeline can be accurately evaluated, and a pipeline vibration solution can be verified.

The invention relates to an extrusion forming mold. The extrusion forming mold comprises a mold sleeve; a ladder-shaped inner cavity penetrating a vertical direction is disposed in the mold sleeve; the inner cavity comprises a mold plate cavity, a mold core cavity and an open cavity successively along an axial direction; a mold core is arranged in the mold core cavity; a mold plate is arranged in the mold plate cavity; an outer peripheral surface of the mold plate is sleeved by an elastic ring that elastically contracts and expands in a radial direction; the elastic ring is provided with an inner peripheral surface matching the outer peripheral surface of the mold plate in a flexible support manner and an outer peripheral surface matching with the inner wall of the mold plate cavity in a flexible support manner. With the extrusion forming mold, cracking phenomenon of the mold plate can be prevented and a service life of the mold is prolonged.

The invention provides a micro-surfacing process suitable for on-site replenishment construction. The micro-surfacing process comprises three steps of the optimization of the overall structure of a road pavement, the improvement of a surface fine treatment material, and micro-surfacing on-site replenishment construction. The invention provides a road pavement fine-treatment method having the advantages of high pavement overall strength, good durability, good low-temperature cracking resistance, strong skid resistance, reduction of carbon emission, energy conservation and ecological environment protection. The construction efficiency can be improved, the construction progress can be accelerated and the energy can be saved; in short, the micro-surfacing process is an efficient continuous construction method.

The invention provides a vibration isolation device, a vibration isolation system and a vehicle, and relates to the technical field of vibration attenuation. The invention aims to reduce the rigid displacement of a vehicle-mounted battery pack under the condition that the vehicle-mounted battery pack is not subjected to vibration excitation while the influence of the vibration excitation on the vehicle-mounted battery pack is reduced, thereby reducing the probability that the vehicle-mounted battery pack collides or pulls with components nearby. The vibration isolation device comprises a base,a spring member and an elastic support beam for supporting a vibration isolation object; the elastic support beam is fixed on the base; the spring member is positioned between the base and the elastic support beam; and the elastic support beam is used for generating linear buckling when the vibration isolation object is subjected to the vibration excitation. The vibration isolation device is usedin vibration attenuation of the vehicle-mounted battery pack.

The invention discloses a power-assisted walking and auxiliary supporting mechanism. The power-assisted walking and auxiliary supporting mechanism comprises a left leg, a right leg, feet, a waist wearing module and an auxiliary supporting telescopic rod, wherein the feet are installed on the left leg and the right leg correspondingly, the left leg and the right leg each comprise a hip joint connecting piece, a thigh supporting rod, a thigh rope driving mechanism, a knee joint connecting piece, a shank supporting rod, a shank rope driving mechanism, an ankle joint connecting piece and a vibration reducing module, the hip joint connecting pieces are connected with the waist wearing module, the thigh supporting rods and the hip joint connecting pieces are connected and can rotate relatively,the thigh supporting rods are rotationally connected with the shank supporting rods through the knee joint connecting pieces, the feet comprise foot bottom, electric folding wheel sets and foot binding belts, the vibration reducing module comprises vibration reducing mechanisms and foot buffer pads, the foot buffer pads are installed on the foot bottom, the vibration reducing mechanisms are connected with the ankle joint connecting pieces, and the vibration reducing mechanisms are connected with the foot buffer pads and the foot bottom. The power-assisted walking and auxiliary supporting mechanism is good in transmission efficiency, safe and reliable, and the smoothness during power-assisted walking is improved.

The invention discloses a vibration isolation platform composed of three groups of oblique springs. The vibration isolation platform composed of the three groups of oblique springs comprises the threegroups of oblique springs, a vertical spring and a carrying platform, wherein the three groups of oblique springs are located in the same vertical plane, the three groups of oblique springs are symmetrically arranged at the two sides of the carrying platform, the three groups of oblique springs comprise three pairs of oblique springs, and one pair of the oblique springs at the upper side and onepair of the oblique springs at the lower side are arranged in the form of up-down symmetry by taking one pair of the oblique springs at the middle as a center; the three pairs of oblique springs comprise six oblique springs which are arranged in the form of left-right symmetry, one end of each oblique spring is movably connected with the carrying platform, and the other end of each oblique springis movably connected with a movable seat I; and the vertical spring is arranged on the lower part of the carrying platform, one end of the vertical spring is movably connected with the lower part of the carrying platform, and the other end of the vertical spring is fixedly connected with a movable seat II. According to the vibration isolation platform composed of the three groups of oblique springs, the oblique springs are adjusted by adjusting a slide element and a support column, so that the negative stiffness generated by the three groups of oblique springs is counteracted with the positivestiffness of the vertical spring to reach dynamic stiffness zero, and a wider zero stiffness characteristic interval and a better vibration reduction effect are achieved.

The invention provides a magnetic suspension type intelligent vibration isolation device. The magnetic suspension type intelligent vibration isolation device comprises a substrate, an excitation coil, a lower sleeve, an upper sleeve and a floating type piston which are all sequentially arranged from bottom to top. A magnetic core is arranged on the substrate, the excitation coil is sleeved outside the magnetic core, the lower sleeve is connected with the substrate, the magnetic core and the excitation coil are sleeved in the lower sleeve, silicone oil is placed in the upper sleeve, a waterproof breathable film adhered to an inner wall of the upper sleeve is arranged above the silicone oil, a permanent magnet is arranged at the bottom end of the floating type piston, and the lower portion of the floating type piston penetrates through the waterproof breathable film to be placed in the silicone oil. The magnetic suspension type intelligent vibration isolation device is a mixed vibration control device used for precise vibration isolation and can be applied to vibration isolation of a precise instrument platform or various micro-vibration isolation environments.

The invention provides a multifunctional compound vibration isolator with both stiffness and damping being adjustable, and the multifunctional compound vibration isolator combines a high static stiffness and low dynamic stiffness vibration isolation technology and a variable damping technology. The structure of the multifunctional compound vibration isolator is mainly formed by an electromagneticvibration isolator with the high static stiffness and low dynamic stiffness feature and a magneto-rheological damper through parallel connection. The electromagnetic vibration isolator and the magneto-rheological damper are independently electrified, the multiple functions are achieved, and meanwhile the problem that the vibration damping performance deteriorates due to a jumping phenomenon when an existing negative stiffness technology is applied can be well solved. The electromagnetic vibration isolator adopts a magnetic tooth structure, by changing the input exciting current, online adjustment of electromagnetism stiffness can be achieved, and therefore the inherent frequency of the vibration isolation system is lowered. The variable damping technology adopts the magneto-rheological damper, and the damper of this type achieves damping change also through change of the input current. When the multifunctional compound vibration isolator works, the mode that the electromagnetic vibration isolator works alone, or the mode that the magneto-rheological damper works alone, or the mode that the electromagnetic vibration isolator and the magneto-rheological damper simultaneously work canbe selected.

The invention discloses a pavement vibration energy recovery power generation device and method based on a three-dimensional super material. The device comprises a multi-cantilever beam annular structure, an upper half sphere case and a lower half sphere case, wherein the upper half sphere case and the lower half sphere case are made of the three-dimensional super material. The multi-cantilever beam annular structure is arranged inside a hollow sphere body formed by the upper half sphere case and the lower half sphere case. The three-dimensional super material sphere cases can realize the isotropic vibration wave gathering; the pavement vibration wave energy can be recovered to the maximum degree; the multi-cantilever beam annular structure can effectively convert electric energy; the damage to the pavement due to the frequent vibration can be reduced; meanwhile, the energy can be converted into electric energy, so that the effective utilization of the energy is realized.

The invention discloses a passenger vehicle engine suspension device which comprises a fixing plate, a sleeving component, a lifting component, a fixing sleeve, a support sleeve and vibration reduction assemblies. A first vibration reduction gasket is arranged at the upper end of the fixing plate, the sleeving component is arranged in the middle of the lower end of the fixing plate, the lifting component is slidably connected with the inner side of the sleeving component, lead screws are arranged on the left side and the right side of the lower end of the fixing plate and are positioned in thesleeving component, and the lower ends of the lead screws penetrate the lifting component. The passenger vehicle engine suspension device has the advantages that vibration reduction and vibration isolation effects can be realized by the first vibration reduction gasket, first springs and second vibration reduction gaskets in the passenger vehicle engine suspension device for engines in the perpendicular directions; vibration reduction and vibration isolation effects can be realized by vibration reduction layers and the vibration reduction assemblies in the passenger vehicle engine suspensiondevice for the engines in the perpendicular directions, vibration reduction and vibration isolation effects further can be realized by the vibration reduction layers and the vibration reduction assemblies for the engines in the horizontal left-right directions, and vibration reduction and vibration isolation effects further can be realized by third vibration reduction gaskets in the passenger vehicle engine suspension device for the engines in the horizontal front-rear directions.

The invention provides a supporting type vibration reduction structure, relates to the technical field of vibration reduction, and solves the technical problem that an existing structure difficultly has good vibration isolation performance while stably supporting a vibration animal. The supporting type vibration reduction structure comprises an upper base, a lower base and an elastic assembly located between the upper base and the lower base and used for reducing vibration, wherein the upper base is provided with a first supporting end used for abutting against the lower base after the elasticassembly deforms, and / or the lower base is provided with a second supporting end used for abutting against the upper base after the elastic assembly deforms so as to limit the deformation quantity ofthe elastic assembly. According to the supporting type vibration reduction structure, the elastic assembly elastically deforms to reduce vibration; through the structure that the first supporting endabuts against the lower base or the second supporting end abuts against the upper base, the deformation amount of the elastic assembly is limited, and the situation that the elastic assembly deformsexcessively and is difficult to support a vibrating object is prevented; and by means of the structure, vibration reduction and the stable supporting effect are combined, the structural stability is considered while vibration is reduced, and the structure can be used for supporting vibration animals to reduce vibration transmission.

The invention provides a vibration damping device. The device comprises an elastic bottom support, a first vibration damping element and a second vibration damping element, wherein a cavity is formedinside the first vibration damping element, the first vibration damping element sleeves outside the second vibration damping element, the second vibration damping element comprises a positive stiffness element, the first vibration damping element comprises a negative stiffness element, the bottom of the first vibration damping element and the bottom of the second vibration damping element are fixed on the elastic bottom support, the top of the first vibration damping element and the top of the second vibration damping element are supported on the bottom of an object subjected to vibration damping, and the first vibration damping element and the second vibration damping element perform parallel support on the object subjected to vibration damping. The vibration damping device applies positive and negative stiffness theoretical design, so that the vibration damping device has high static stiffness and low dynamic stiffness at a static equilibrium position. According to the structure, thenatural frequency of the system is reduced, so that a resonance area is expanded, in addition, the vibration damping device with the high static rigidity and low dynamic rigidity has a smaller displacement transmission rate, a washing machine using the device can be effectively isolated from vibration presented by the object subjected to vibration damping, so that the purpose of vibration dampingis achieved.

The invention discloses an air filter air outlet pipe. The air filter air outlet pipe comprises a first air filter air outlet pipe, a third air filter air outlet pipe, a rubber sleeve and a second airfilter air outlet pipe made of an elastomer material, at least three circles of ripples are annularly arranged on the second air filter air outlet pipe, and the left end part of the first air filterair outlet pipe is fixedly connected with the right end part of the second air filter air outlet pipe. The left end part of the second air filter air outlet pipe is detachably and fixedly connected with the right end part of the third air filter air outlet pipe, the left end of the third air filter air outlet pipe is detachably connected with the right end of the rubber sleeve in an inserted mode,the right end of the first air filter air outlet pipe is fixedly connected with the air filter upper shell, and the left end of the rubber sleeve is detachably and fixedly connected with an engine connector in a sealed mode. According to the air filter air outlet pipe, the usage amount of the rubber hose is reduced, the part cost is reduced, the sealing performance is improved, the arrangement space is small, the interference between the air filter air outlet pipe and the peripheral parts is avoided, the abrasion risks are eliminated, the manufacturing process is simple, the manufacturing errors are reduced, and the vibration isolation performance is improved.

The invention provides a multi-stage damping shock absorber. The multi-stage damping shock absorber comprises an elastic packaging housing, a primary buffer plunger, a primary shock absorbing and damping disc, a secondary buffer plunger, a secondary porous damping disc, a first viscous oil fluid and a second viscous oil fluid, wherein the primary buffer plunger, the primary shock absorbing and damping disc, the second buffer plunger and the second porous damping disc are all mounted in a cavity of the elastic packaging housing; the second buffer plunger is mounted on the second porous damping disc; the primary shock absorbing and damping disc is mounted on the secondary buffer plunger; the primary buffer plunger is mounted on the primary shock absorbing and damping disc; the second viscous oil fluid is placed at the bottom of the cavity of the elastic packaging housing; and the first viscous oil fluid is placed at the upper part of the cavity of the elastic packaging housing. The multi-stage damping shock absorber is simple in structure, excellent in shock absorption, skillful in design and favorable in performance, and is convenient and practical.