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51results about How to "Reduced vibration damping" patented technology
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Shaping device of solid hot extrusion magnesium alloy wheel hub and shaping method thereof
A solid-state hot squeezing apparatus for shaping the Mg-alloy wheel hub is composed of upper die plate, male die and its heater, heat isolating plate between said upper die plate and male die, moulding cavity heater for left and right moulding cavities, heat isolating plate between female die and its die plate, push-out rod, and temp controller. Its shaping method includes such steps as blanking, heating, holding temp, preheating die set squeezing cutting, surface treating and ageing treating.
Owner:HARBIN INST OF TECH
Multi-field coupling energy-saving tuned mass vibration reduction device
ActiveCN102493573ASuitable for low-carbon economic development needsThe principle is clear and reliableShock proofingMulti fieldMechanical energy
The invention provides a multi-field coupling energy-saving tuned mass vibration reduction device. By using power-electricity-magnetism-heat multi field coupling, aluminum sheets cut magnetic induction lines so as to change vibration mechanical energy into electric energy aiming at the vibration excitation of the external on an engineering structure, the aluminum sheets are fixed by using screws,the damping ratio can be adjusted by adjusting the distance between the aluminum sheets and a strong magnet, and a copper coil is fixed at the backs of the aluminum sheets to absorb energy which is generated by eddy current in the aluminum sheets, so current is generated in the copper coil; a nickel steel sheet is inserted into the copper coil to increase the magnetic flux density of the copper coil; the diameter and number of turns of the coil are adjusted, the number of the nickel steel sheet is increased, and the size of the nickel steel sheet is adjusted to ensure that current with different magnitudes is generated in the copper coil, so the damping ratio can be adjusted; and meanwhile, the current in the copper coil is stored in a storage battery in a charging way, so the power supply demand of structural illumination or sight can be met.
Owner:中铁桥研科技有限公司 +2
Sand cushion isolation and shock absorption device for comprehensive pipe gallery and building method thereof
ActiveCN106869171AInexpensive and convenient materialsLow costArtificial islandsProtective foundationStructure of the EarthBuilding construction
The invention provides a sand cushion isolation and shock absorption device for a comprehensive pipe gallery and a building method thereof. The sand cushion isolation and shock absorption device has the advantages of simple structure, convenience in construction, low cost of construction, high applicability and convenience in popularization and implementation. The sand cushion isolation and shock absorption device comprises a foundation isolation and shock absorption device and side wall isolation and shock absorption devices. The comprehensive pipe gallery is buried in a stratum and is formed by foundation mats at the bottom, side walls on the two sides and top plates at the top in a surrounded mode. A foundation isolation and shock absorption layer is arranged under the foundation mats of the comprehensive pipe gallery and is formed by packing coarse sand by earthwork cloth, and a rammed 37 lime earth layer is arranged under the foundation isolation and shock absorption layer. Side wall isolation and shock absorption layers are arranged on the earth meeting surfaces of the side walls of the comprehensive pipe gallery and are formed by packing coarse sand by earthwork cloth. The foundation isolation and shock absorption device and the side wall isolation and shock absorption devices surround the three surfaces of the comprehensive pipe gallery except for the top plates, thereby forming an isolation and shock absorption layer.
Owner:XI AN JIAOTONG UNIV
Ocean platform vibration absorbing energy feedback device based on nonlinear energy sink
PendingCN110641639ATake advantage ofReduced vibration dampingShip vibration reductionMachines/enginesEnergy feedbackElectric energy
The invention provides an ocean platform vibration absorbing energy feedback device based on a nonlinear energy sink and belongs to the field of deepwater marine drilling platforms. The ocean platformvibration absorbing energy feedback device based on the nonlinear energy sink consists of a platform, a swaying-surging nonlinear energy sink and a heaving nonlinear energy sink. The swaying-surgingnonlinear energy sink is mounted around the platform so that the swaying and surging of the platform can be reduced; and the heaving nonlinear energy sink is mounted under the platform so that the heaving of the platform can be reduced; structures such as mass blocks, springs, straight shafts and linear power generators are arranged in the swaying-surging nonlinear energy sink and the heaving nonlinear energy sink; the linear power generators are placed between the mass blocks and the straight shafts; when the platform is subject to a load to generate motion response, the springs drive the mass blocks to move on the straight shafts in a reciprocating manner; in the process, the linear power generators between the mass blocks and the straight shafts convert the vibration energy into electric energy so as to generate electric energy, which can be used by the platform, while the ocean platform motion response is reduced; and therefore, energy is sufficiently utilized.
Owner:OCEAN UNIV OF CHINA
Special-shaped rubber shock absorber
ActiveCN105156534AImprove usabilityNo change in structure sizeInertia effect dampersDynamic energyEngineering
The invention belongs to the technical field of rubber vibration isolators, and relates to a special-shaped rubber shock absorber. The special-shaped rubber shock absorber comprises a variable-section rubber shock absorption mat, a rubber shock absorption flat mat and a special-shaped bolt. Vibration energy and impact energy are transformed into heat energy and deformation energy of rubber materials through deformation of a rubber part, and the functions of vibration isolation and buffering are achieved on a light electronic board. A small-diameter part of the variable-section rubber shock absorption mat is arranged in a hole of the electronic board, and the function of attenuating the dynamic energy, in the radial direction of the shock absorber, of the electronic board is achieved. The function of attenuating the dynamic energy in the axial direction of the shock absorber is achieved through a large-diameter part of the variable-section rubber shock absorption mat and the rubber shock absorption flat mat. The variable-section rubber shock absorption mat and the rubber shock absorption flat mat are arranged on the electronic board through the special-shaped bolt. Meanwhile, dynamic displacement of the shock absorber is limited, and the functions of limiting and mounting are achieved.
Owner:AEROSPACE RES INST OF MATERIAL & PROCESSING TECH +1
Pressure oil pipe and engine comprising same
ActiveCN102032022AReduce processing difficultyReduces the possibility of crackingAdjustable jointsLubricant conduit arrangementsPetroleum engineering
The invention discloses a pressure oil pipe which comprises a pipe body (1) and a joint body (2), wherein the joint body (2) is provided with a connecting sleeve pipe (21), and the pipe body (1) is connected into the connecting sleeve pipe (21); an annular slot (211) is further drilled on the inner wall of the connecting sleeve pipe (21), and a first limiting part (31) and a second limiting part (32) are respectively arranged at both sides of the annular slot (211) along the axial direction; and a protruded part (11) is arranged on the circumferential outer wall of the pipe body (1), and the protruded part (11) is slidably arranged in the annular slot (211) along the axial direction and positioned between the first limiting part (31) and the second limiting part (32). Through the structural design of the pressure oil pipe, on one hand, the own processing process difficulty of the pressure oil pipe can be lowered, on the other hand, the cracking possibility of the pressure oil pipe along with the vibration of an engine can be reduced. In addition, the invention also discloses the engine comprising the pressure oil pipe.
Owner:WEICHAI POWER CO LTD
Underwater damper for arched steel tower in construction condition
The invention discloses an underwater damper for an arched steel tower in a construction condition. The underwater damper is one of a drilling type, a closed opening type and an opening type, which are symmetrical structures: (1) the drilling type is as follows: drilling in the motion direction of the damper, utilizing water flowing through a pipeline to form turbulence, and increasing resistance with shearing stress of the pipe wall; (2) the closed opening type is as follows: punching on the surface of a cubic box body with a hole inside, un-punching on the top surface and punching on the other five surfaces so as to generate generates turbulence inside the box body by water flow to consume energy; (3) the opening type is as follows: using an un-flat surface including an I type or a Chinese character Wang shape, so as to increase disturbance of the damper to the flow field and increase the damping. The acceleration of a spring oscillator system with the underwater damper is attenuated quickly, so that the underwater damper designed by the invention achieves the effect of increasing the system damping, and the effect is very remarkable.
Owner:CHANGAN UNIV
Vibration attenuation and noise reduction pad and motor installation structure of range hood
ActiveCN102213292ALower natural frequencyDecay dampingNon-rotating vibration suppressionSupports/enclosures/casingsVibration attenuationEngineering
The invention relates to a vibration attenuation and noise reduction pad. The vibration attenuation and noise reduction pad comprises a columnar body (1); an axially perforative through hole (3) through which an installation screw (2) passes is formed in the body; an annular groove (4) is formed on the peripheral surface of the middle part of the body (1); the vibration attenuation and noise reduction pad is characterized in that: a plurality of radial gaps (5) are formed on at least one of the upper end face and the lower end face of the body (1) at intervals along the circumference; each radial gap (5) radially perforates through the circumferential wall of the body (1); the radial gaps divide the contact surface into a plurality of small elastic units, so the contact area between the body 1 and a connected body is reduced; when the body (1) is screwed and squeezed by the screw, a connecting force is dispersed to each independent elastic unit; at the moment, the vibration produced by a connected component can be stopped and absorbed by the elastic units, so the vibration energy transmitted to a thin plate shell is effectively reduced; and particularly, when the vibration attenuation and noise reduction pad is applied to a system in the class of fans, aims of reducing vibration and attenuating noise can be fulfilled effectively.
Owner:NINGBO FOTILE KITCHEN WARE CO LTD
Rubber damper with adjustable frequency
InactiveCN103486175ASimple structureIngenious designHigh internal friction springsSteel platesEngineering
The invention discloses a rubber damper with the adjustable frequency. The rubber damper with the adjustable frequency comprises a top plate (1) and a base plate (2), wherein rubber plates (3) are arranged between the top plate (1) and the base plate (2). The rubber damper with the adjustable frequency is characterized in that upper baffles (4) are arranged on the lower end face of the top plate (1), lower baffles (5) are arranged on the upper end face of the base plate (2), each lower baffle (5) comprises two sub-baffles (6) which are arranged in a parallel mode, when the upper baffles (4) and the lower baffles (5) are buckled in an opposite mode, each upper baffle (4) exactly enters a gap (7) formed between every two adjacent sub-baffles (6), a gap is reserved between each upper baffle (4) and the base plate (2), a gap is reserved between each lower baffle (5) and the top plate (1), the number of layers of the rubber plates (3) is at least two, and a middle steel plate (8) is further arranged between every two adjacent rubber plates (3). The rubber damper with the adjustable frequency is simple in structure and exquisite in design, and the frequency of the rubber damper can be adjusted according to different frequencies of needed damping devices so that the rubber damper can adapt to the damping devices.
Owner:雅生活明日环境发展有限公司
Environment-friendly sewage treatment device for construction site
InactiveCN111921248AEasy to moveReduced vibration dampingStationary filtering element filtersSewage treatmentMechanical engineering
The invention provides an environment-friendly sewage treatment device for a construction site. The environment-friendly sewage treatment device comprises a base; a damping plate is movably mounted atthe top of the base; a traction column is fixedly mounted in the middle of the right side of the base; supporting legs are fixedly installed at the four corners of the two sides of the base. Oppositesupporting columns are fixedly mounted at the top of the damping plate. A treatment cylinder is fixedly mounted at the top of each supporting column; a sludge cavity and a treatment cavity are formedin the treatment cylinder; a filter plate is fixedly mounted on the inner wall of the treatment cavity, sludge wastewater poured into a sludge inlet can be filtered in the filter plate, a protectionblock is fixedly mounted on the right side of the top of the filter plate, and a first electric telescopic rod is fixedly mounted in the left end of the protection block, so that a push plate can be pushed by extension of the first electric telescopic rod to discharge residual sludge filtered on the filter plate into the sludge cavity through a through groove formed in the lower part of the outerwall of a sludge blocking wall in a sludge blocking device.
Owner:京山俊平机电科技有限公司
Electric bicycle rear suspension system with worm and gear mechanism for regulating wheelbase
The invention provides an electric instead-of-walk vehicle rear hanging frame system with a worm wheel and worm rod adjusting the wheel base. In the system, both ends of a worm wheel of a worm wheel and worm rod mechanism are provided with output shafts which are mutually separated, coaxial with the worm wheel and driven by the worm wheel, the output shafts which are extended out of end covers of both ends of a shell of the worm wheel and worm rod mechanism are fixedly connected with an oscillating arm respectively, two rear wheels of the electric instead-of-walk vehicle are respectively arranged on one end of the corresponding oscillating arms, which are away from the output shafts. The two output shafts are elastic twisted rod shafts, which are fixedly connected with both ends of a worm wheel hub hole respectively. The mechanism is also provided with a friction disk, an inertia disk and an oil gap packing piece, and the oil gap packing piece brings the oil gap in which the viscous oil is filled. The system has the advantages of the adjustment of the wheel base between the front and the rear wheels, better damping performance and long service life, and a rider, particularly the elder or the disabled, can feel especially comfortable.
Owner:CHONGQING UNIV +1
Production equipment for tailing micro powder
ActiveCN105944813AElicit activityHigh degree of automationSolid waste managementGrain treatmentsEngineeringBiological activation
Owner:厦门兑泰新材料科技有限公司
Manual-shift speed reducer of crowned-gear clutch for large-size petroleum drilling machines
InactiveCN102588564AGood vibration dampingReduced vibration dampingControlled membersGear lubrication/coolingReduction driveReducer
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.
Owner:CSR ZIYANG TRANSMISSION
Pod rain-line type damper suitable for stay cable
ActiveCN103161125AFor the purpose of dampingSimple technologyBridge structural detailsVibration attenuationEngineering
The invention discloses a pod rain-line type damper suitable for a stay cable. The damper is wound on a stay cable tightly and closely and comprises a protective sleeve, a metal woven layer, cabin partition boards and particles enclosed in cabins. A rope-type cavity is formed by the metal woven layer. The cabin partition boards divide the cavity into a plurality of small cabins, and particles with different particle diameters are evenly distributed in each small cabin. The protective sleeve is coated outside the entire rope-type cavity. The pod rain-line type damper suitable for the stay cable has the advantages that vibration energy of the stay cable can be consumed through the forms such as motions of the particles in the pod rain-line type damper, collisions and frictions between the particles and collisions and frictions between the particles and cabin walls, so that the aim of vibration attenuation of the stay cable is achieved. Due to the fact that the pod rain-line type damper is wound on the stay cable tightly and closely, the aim of damaging of rain lines on the stay cable is achieved. Wind and rain vibrations of the stay cable can be reduced effectively. At the same time, internal damping of the stay cable is increased, so that vibrations in other forms are reduced.
Owner:TONGJI UNIV
Aviation piston type engine driving torsional damper
InactiveCN101813157AStrong ability to absorb large torque changesReduced torsional stiffnessVibration suppression adjustmentsPistonTorsional rigidity
The invention discloses an aviation piston type engine driving torsional damper, which at least comprises a damper casing as an input component, a reducing gear as an output component and a fixed gear ring fixedly connected with the reducing gear, wherein the damping casing is connected with a crankshaft and commonly rotates along with the crankshaft; and at least two groups of elastic connecting keys are arranged between the damper casing and the fixed gear ring and are used for transmitting the toque to the reducing gear. By outputting the torque of the crankshaft by using two paths, the driving torsional damper has the functions of damping and increasing the damping, can reduce the torsional rigidity of a combined part of the crankshaft of the engine and a driving system and tunes the inherent frequency of torsional vibration of the driving system.
Owner:JINCHENG GROUP
Hanging-type handheld vibrating plastering machine
PendingCN108505731AWith speed control functionReduced vibration dampingBuilding constructionsEngineeringWinch
The invention discloses a hanging-type handheld vibrating plastering machine, and relates to a building plastering machine. The hanging-type handheld vibrating plastering machine is composed of a handheld vibrating plastering device, a sling, a hanging bracket and an electric winch. The handheld vibrating plastering device is connected with the hanging bracket and the electric winch through the sling. A high-frequency vibrator, a control handle and a controller are arranged on a machine body of the handheld vibrating plastering device. The handheld vibrating plastering device is connected withthe hanging bracket only through the sling to be hung on the lower portion of one end of a hanging arm of the hanging bracket. A constructor operates the handheld vibrating plastering machine throughthe control handle with the controller to make back and forth movement from bottom to top for construction. The electric winch is arranged on the hanging bracket constituted by a base, a vertical column and the hanging arm, and the hanging arm can rotate in the horizontal direction. The hanging-type handheld vibrating plastering machine has the characteristics of simple structure, flexible operation and high practicability.
Owner:吴奉军
Rocker bearing water tank damper
ActiveCN102995785BImprove vibration resistanceOvercome the difficulty of controlling the vibration damping effectShock proofingVibration attenuationEngineering structures
The invention discloses a rocker bearing water tank damper, and belongs to the technical field of energy dissipation and vibration attenuation of civil engineering structures. The rocker bearing water tank damper comprises a plurality of rocker sliding support saddles, a water tank, a damper support saddle, a box column, and a viscous damper; each rocker sliding support saddle comprises an upper support saddle plate, a metal ball and a lower support saddle plate; the upper support saddle plate is fixed at the lower surface of the water tank; the lower support saddle plate is fixed on an upper top plate or a spandrel girder of the structure; the upper saddle plate is opposite to the lower saddle plate; the metal ball is placed in the middle to achieve oppositely sliding between the upper support saddle plate and the lower support saddle plate; the box column is arranged at the bottom part of the water tank; the damper support saddle is arranged on the upper top plate or the spandrel girder of the structure; and the viscous damper is horizontally arranged between the box column and the damper support saddle. By adopting the rocker bearing water tank damper, on one hand, the adverse effect of a high-level water tank on the structure under the horizontal load is removed; and on the other hand, dynamic response of the structure under the horizontal load is greatly reduced by the formed water tank damping system. The rocker bearing water tank damper is stable in damping effect, simple in structure, safe and reliable, good in durability, and strong in designability.
Owner:TSINGHUA UNIV +1
Electromechanical hydraulic hybrid power transmission device for cutting part of coal mining heading machine
InactiveCN103573960AProtection securityHigh output torqueGearing controlFluid gearingsCoal miningHydraulic hybrid vehicle
The invention discloses an electromechanical hydraulic hybrid power transmission device for a cutting part of a coal mining heading machine. The device comprises an input shaft, a hydraulic torque converter, a first planet row, a clutch, a second planet row and a third planet row, wherein the hydraulic torque converter comprises a turbine and a pump wheel; the turbine is connected with the input shaft; the pump wheel is connected with a sun wheel of the first planet row; a planet carrier of the first planet row is connected with a driving disc of the clutch; a driven disc of the clutch is connected with the input shaft; a gear ring of the first planet row is fixedly connected with a sun wheel of the second planet row; a planet carrier of the second planet row is fixedly connected with a sun wheel of the third planet row; a planet wheel of the third planet row is connected with an output shaft. On the premise of taking the efficiency of a transmission system into full consideration, compared with a power transmission system for a cutting part of the existing coal mining heading machine, the electromechanical hydraulic hybrid power transmission device for the cutting part of the coal mining heading machine has the advantages that self-adaptive stepless speed variation is realized; a rock is broken forcibly through reflux power; safety protection is realized by the clutch; buffering and damping are realized by a hydraulic reflux speed-adjusting device.
Owner:CHONGQING UNIV
Security unmanned aerial vehicle with undercarriage folding and unfolding functions and high-definition shooting function
InactiveCN110979707ARealize the buffering effectImprove clarityUndercarriagesAircraftsUncrewed vehicleStructural engineering
The invention relates to a security unmanned aerial vehicle with undercarriage folding and unfolding functions and a high-definition shooting function. The unmanned aerial vehicle comprises a main body, a camera, four flight devices and four brackets, and further comprises a folding and unfolding mechanism and four supporting mechanisms, the folding and unfolding mechanism comprises a first cylindrical notch, a piston block, a first permanent magnet, a second permanent magnet, an air pressure sensor, a connecting rod and four air collecting assemblies, each supporting mechanism comprises a second cylindrical notch, an undercarriage, a buffer assembly, a spring, a third pipeline, a second electric valve, a second pipeline and a first electric valve, each air collecting assembly comprises anair collecting pipe, a third electric valve and a first pipeline, and each buffer assembly comprises an air conveying hole and an air bag. The buffering effect on the camera is achieved through the folding and unfolding mechanism, shaking of the camera is reduced, the shooting definition of the unmanned aerial vehicle is improved, shielding of the supporting mechanisms on shooting of the camera is reduced through folding and unfolding of the supporting mechanisms, and the practicability of the unmanned aerial vehicle is improved.
Owner:广州贤智科技有限公司
Ultrahigh-strength low-dynamic-static-stiffness-ratio polyurethane microporous elastic backing plate and preparation method thereof
The invention relates to a polyurethane microporous elastic backing plate with ultrahigh strength and low dynamic and static stiffness ratio, and belongs to the technical field of microporous polyurethane. The elastic backing plate is obtained by curing and molding a component A and a component B; the component A is prepared by uniformly mixing PTMEG (polytetramethylene ether glycol) 1000, PTMEG 2000, BDO (butanediol), DEA (diethylene glycol), H2O, AK7703, BDMAE (butanediol), T12 and a carbon nano tube; the component B is a prepolymer with the-NCO value of 12-14, which is formed by stirring and reacting isocyanate and polytetrahydrofuran ether polyol for 4-6 hours at the temperature of 80-100 DEG C in a protective gas atmosphere; the molar ratio of the active-H contained in the component A to the-NCO group contained in the component B is (1.00: 0.98)-(1.00: 1.03). The polyurethane microporous elastic base plate has ultrahigh strength, proper static stiffness and lower ratio of dynamic stiffness to static stiffness, and can meet the use requirements of elastic base plates on special sections of heavy haul railways.
Owner:山东奥卓新材料有限公司
A Composite Vibration Isolation Device Based on Particle Damping and Memory Alloy Materials
ActiveCN106012709BSuppression of resonance peaksImprove the vibration isolation effectRailway tracksVibration attenuationSoft materials
Owner:TONGJI UNIV
Shaping device of solid hot extrusion magnesium alloy wheel hub and shaping method thereof
A solid-state hot squeezing apparatus for shaping the Mg-alloy wheel hub is composed of upper die plate, male die and its heater, heat isolating plate between said upper die plate and male die, moulding cavity heater for left and right moulding cavities, heat isolating plate between female die and its die plate, push-out rod, and temp controller. Its shaping method includes such steps as blanking, heating, holding temp, preheating die set squeezing cutting, surface treating and ageing treating.
Owner:HARBIN INST OF TECH
Portable electronic apparatus vibration damping structure and notebook-type computer
ActiveCN100547518CIncrease dampingIncrease structural dampingDigital data processing detailsSolid based dampersPeriodic oscillationEnergy absorption
The invention relates to a vibration-reducing and damping structural part of a portable electronic device and a notebook computer. The vibration-damping structural part of the portable electronic device includes: a damping cavity, which is opened on the casing of the portable electronic device; a cover plate, which covers the damping cavity; and a vibration-damping component, which is placed in the above-mentioned damping cavity. The above-mentioned damping cavity can be independent, or divided into several sub-damping cavities by partitions. The vibration-damping components mentioned above can be particles, thin rods, flat plates and the like. The vibration-damping structural components of the portable electronic equipment of the present invention, when periodic or non-periodic vibrations are caused by external forces such as vibration, drop, impact, etc., especially random vibrations, the vibration-damping components enclosed in the cavity move and collide with each other It consumes a lot of energy, absorbs and consumes a lot of vibration energy, and reduces the harm caused by vibration. The damping structure is compact, light and thin, and the damping does not change with temperature in the range of -40-80°C, which is its excellent characteristic.
Owner:LENOVO (BEIJING) LTD
Pressure oil pipe and engine comprising same
ActiveCN102032022BReduce processing difficultyReduces the possibility of crackingAdjustable jointsLubricant conduit arrangementsPetroleum engineering
The invention discloses a pressure oil pipe which comprises a pipe body (1) and a joint body (2), wherein the joint body (2) is provided with a connecting sleeve pipe (21), and the pipe body (1) is connected into the connecting sleeve pipe (21); an annular slot (211) is further drilled on the inner wall of the connecting sleeve pipe (21), and a first limiting part (31) and a second limiting part (32) are respectively arranged at both sides of the annular slot (211) along the axial direction; and a protruded part (11) is arranged on the circumferential outer wall of the pipe body (1), and the protruded part (11) is slidably arranged in the annular slot (211) along the axial direction and positioned between the first limiting part (31) and the second limiting part (32). Through the structural design of the pressure oil pipe, on one hand, the own processing process difficulty of the pressure oil pipe can be lowered, on the other hand, the cracking possibility of the pressure oil pipe along with the vibration of an engine can be reduced. In addition, the invention also discloses the engine comprising the pressure oil pipe.
Owner:WEICHAI POWER CO LTD
High-strength low-dynamic-static-stiffness-ratio polyurethane microporous elastic backing plate and preparation method thereof
The invention relates to a polyurethane microporous elastic backing plate with high strength and low dynamic and static stiffness ratio, and belongs to the technical field of microporous polyurethane. The elastic backing plate is obtained by curing and molding a component A and a component B; the component A is prepared from PTMEG (polytetramethylene ether glycol) 1000, BDO (butanediol), H2O, AK7703, BDMAE (butanediol), T12 and a carbon nano tube; the component B is a prepolymer with the-NCO value of 12-14, which is formed by stirring and reacting isocyanate and polytetrahydrofuran ether polyol for 4-6 hours at the temperature of 80-100 DEG C in a protective gas atmosphere; the molar ratio of the active-H contained in the component A to the-NCO group contained in the component B is (1.00: 0.98)-(1.00: 1.03). According to the method, the component A and the component B are preheated and then poured, cured and formed. The polyurethane microporous elastic base plate has higher strength, proper static rigidity and lower ratio of dynamic rigidity to static rigidity, and can meet the use requirements of common road sections of heavy haul railways on the elastic base plate.
Owner:山东奥卓新材料有限公司
Engine vibration isolator used on engineering machinery
PendingCN110529544AImprove shock absorption and cushioning effectAvoid compression failuresSpringsShock absorbersVibration isolationPiston
The invention discloses an engine vibration isolator used on engineering machinery. The engine vibration isolator comprises an engine vibration isolator body, a lower suspension piston, a nitrogen shock absorber and a sliding piston, wherein the engine vibration isolator body is fixed on the engine vibration isolator fixed chassis; an engine box body is arranged in the engine vibration isolator body; a plurality of groups of fixing bolts are arranged on the engine vibration isolator fixed chassis; an engine box vibration reduction pad is fixed to the lower surface wall of the engine box body,the engine box body is fixedly installed on the upper surface wall of an upper suspension piston through bolts, the upper suspension piston is arranged on the inner surface wall of the engine vibration isolator body, and an air sealing ring is fixed to the side surface wall, making contact with the engine vibration isolator body, of the upper suspension piston in a sealed mode. By arranging the engine box vibration reduction pad, an air chamber, a nitrogen cylinder, the nitrogen shock absorber and a telescopic spring, the problems that an engine vibration isolation device is short in service life and poor in vibration isolation effect are solved.
Owner:XINJIANG NORTH CONSTR GRP CO LTD
Design method of non-circular C-shaped damping ring with controllable contact pressure
ActiveCN114547771AGreat damping performanceControllable contact pressureGeometric CADSustainable transportationContact pressureGear wheel
The invention provides a design method of a non-circular C-shaped damping ring with controllable contact pressure. Based on the design method, corresponding non-circular C-shaped damping ring free profiles can be designed according to different contact pressure requirements, so that the contact pressure depends on the gear rotating speed and also depends on profile deformation, and the problem that the contact pressure is uncontrollable under the designed rotating speed is solved; and the optimal contact pressure corresponding to the maximum vibration reduction efficiency of the damping ring can be obtained under the designed rotating speed. Based on the design method, the contact pressure between the damping ring and the gear is uniformly distributed, and the contact rate is high. When the vibration damper is installed in a gear, even contact pressure can be generated, the contact rate is high, and the situation that the vibration damping performance is reduced due to a non-contact area can be avoided.
Owner:CHONGQING UNIV
Motor with anti-shake and damping functions
ActiveCN111864971AGood vibration resistanceGood vibration reduction effectSupports/enclosures/casingsPhysicsDamping function
The invention discloses a motor with anti-shake and damping functions. The motor comprises a base assembly, a bearing assembly and a pressure stabilizing shaft assembly, wherein the basic assembly islocated in the middle of the whole device, the bearing assembly is arranged on one side of the base assembly, the pressure stabilizing shaft assembly is arranged in the bearing assembly, mist in a pressure stabilizing tank can be slowly accumulated at the bottom of the pressure stabilizing tank under the action of gravity, water molecules are atomized through the water flow atomization assembly toform circulation of the water molecules, and the aerial fog mixture can effectively cool down a motor transmission shaft area while vibration isolation, and improve the continuous operation performance of the device.. The motor can effectively avoid the characteristics of poor vibration reduction and shock absorption effect of pure gas, low flow rate of pure liquid vibration reduction, easiness in accumulation and poor flexibility, can further avoid characteristics of poor stability of spring vibration reduction and easiness in driving surrounding objects to swing due to aftershock of the spring, and is stable in vibration reduction effect.
Owner:SUZHOU SAIRONG CONSTITUTION&DECORATION ENG CO LTD
A motor with anti-shake and shock-absorbing functions
ActiveCN111864971BMake the most of the effectsWell mixedSupports/enclosures/casingsPressure stabilizationDrive shaft
The invention discloses a motor with anti-vibration and shock absorbing functions, which includes a base assembly, a bearing assembly, and a pressure-stabilizing shaft assembly. A pressure stabilizing shaft assembly is arranged inside the assembly. The mist in the pressure stabilizing tank of the present invention will slowly accumulate at the bottom of the pressure stabilizing tank under the action of gravity, and is atomized by the water flow atomizing component to form a cycle of water molecules, and the aerosol mixture is in the At the same time of vibration isolation, it can effectively cool down the area of the motor drive shaft and improve the continuous operation performance of the device. The invention can effectively avoid the characteristics of poor vibration damping effect of pure gas, and avoid the low flow rate and easy accumulation of pure liquid vibration damping The characteristics of poor flexibility can avoid the poor stability of spring vibration reduction, and the characteristics of spring aftershocks are easy to drive the surrounding objects to swing, and the vibration reduction effect is stable.
Owner:SUZHOU SAIRONG CONSTITUTION&DECORATION ENG CO LTD
Hydraulic vibration reduction mechanism with variable restoration damping based on swing motor
PendingCN112253688AChange the damping force valueAvoid Axial DeformationRotating vibration suppressionMechanical engineeringMechanics
The invention discloses a hydraulic vibration reduction mechanism with variable restoration damping based on a swing motor, and belongs to the technical field of hydraulic vibration reduction. The hydraulic vibration reduction mechanism comprises a swing motor oil cylinder (1), an oil chamber is arranged in the swing motor oil cylinder (1), a swing motor rotating shaft (4) is arranged in the oil chamber, a blade (5) is connected to the swing motor rotating shaft (4), the swing motor rotating shaft (4) drives the blade (5) to swing in the oil chamber in a reciprocating mode, and at least one arc-shaped channel is formed between the blade (5) and the inner wall of the swing motor oil cylinder (1) at intervals. The hydraulic vibration reduction mechanism is characterized in that a one-way conduction mechanism is installed on the blade (5), and the one-way conduction mechanism is closed along with the restoration movement of the swing motor rotating shaft (4). According to the hydraulic vibration reduction mechanism with the variable restoration damping based on the swing motor, the one-way conduction mechanism is arranged on the blade, so that the flow area of oil is blocked to a certain extent during restoration, and the damping force value during restoration is changed.
Owner:郭怀宝
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