92results about How to "Realize the function of vibration reduction" patented technology

The invention provides a multifunctional vehicle-borne battery box, which comprises a box cover, a box body, connecting bodies and a battery system. The multifunctional vehicle-borne battery box is characterized in that: at least one wall of the battery box is a hollow double-walled structure composed of an inner wall and an outer wall. The inner wall is a heat conduction wall, and is in fixed and sealing connection with the box body through fixation bodies, so that the battery box is divided into a box body space and a double-walled space that are not communicated mutually. The double-walled space is provided with ventilation holes that are equipped with ventilation doors. And the double-walled space can be communicated with the outside through the ventilation doors. The multifunctional vehicle-borne battery box provided in the invention can satisfy the heat preservation, waterproofness, shock resistance, impact resistance, heat dissipation and other technological requirements needed by an electric vehicle battery box, so that the reliability and service life of a battery system can be improved.

A real-time controlling system used for controlling an intelligent active vibration isolation unit comprises an intelligent active vibration isolation unit, a base, a DSP vibration controlling card, a piezo-electricity type accelerating sensor, a signal collecting device and a signal conditioning device, wherein, the intelligent active vibration isolation unit is fixed on the base; when the base is vibrated, the signal collecting device collects two error signals and one vibration source signal on the horizontal and vertical planes of the intelligent active vibration isolation unit transmitted from the vibration source detected by the piezo-electricity type accelerating sensor, and all the three signals enter the DSP vibration controlling card; after the three signals are calculated through the control algorithm in the DSP vibration controlling card, two signals to be controlled are outputted and processed through the signal conditioning device, and the two signals to be controlled are outputted to two giant magnetostrictive actuators in the intelligent active vibration isolation unit in the horizontal direction and in the vertical direction, thereby generating relevant extension and shrinkage and realizing the active vibration control of the intelligent active vibration isolation unit. The invention has the advantages of quick speed, real time and high precision.

The invention provides an automatic adjustment vibration reducer, and belongs to the technical field of automobiles. The automatic adjustment vibration reducer solves the technical problem that in an existing vibration reducer, the magnitude of resistance borne by a main piston cannot be adjusted according to vibration amplitude. The automatic adjustment vibration reducer comprises a main piston, a piston rod, an ascending one-way valve, a descending one-way valve and a hydraulic oil cylinder. A working oil cavity is formed in the hydraulic oil cylinder. The main piston is located in the working oil cavity. The lower end of the piston rod is fixedly connected with the main piston. Multiple lower damping oil holes are formed in the side wall of the lower portion of the hydraulic oil cylinder, and the lower damping oil holes are distributed in the axial direction of the hydraulic oil cylinder. The ascending one-way valve can block all the lower damping oil holes. Multiple upper damping oil holes are formed in the side wall of the upper portion of the hydraulic oil cylinder, and the upper damping oil holes are distributed in the axial direction of the hydraulic oil cylinder. The descending one-way valve can block all the upper damping oil holes. According to the vibration reducer, the magnitude of resistance borne during up-and-down movement of the piston can be adjusted according to the vibration amplitude, and a good vibration reduction effect is achieved.

A shock-absorbing comfortable sole comprises an outsole in contact with the ground and a midsole fixed on the upper surface of the outsole. The midsole comprises an upper layer and a lower layer. One or a plurality of through holes penetrating through the midsole in the thickness direction are respectively reserved on a heel, a rear sole and / or a front sole of the upper midsole. Projections corresponding to the through holes on the upper midsole are arranged on the upper surface of the lower midsole. The projections on the lower midsole are connected with the through holes on the upper midsole respectively in an embedded manner. Bottom grains protruding the lower surface of the outsole and corresponding to the projections on the lower midsole in position are arranged on the lower surface of the outsole. The upper midsole is hard, the lower midsole is soft, and when the surface of the upper midsole is stepped by a foot in walking, the upper surfaces of the soft projections are recessed highly and the upper surface of the hard upper midsole is recessed lowly, so that the upper surface of the upper midsole is flat or slightly uneven alternately, a foot sole of a wearer can be massaged, walking fatigue can be relieved, and the effect is evident.

The invention aims at providing a diesel generator with a variable spring support and a vibration reducing control method of the diesel generator. The support can be automatically regulated along with the working condition of the diesel generator, and therefore the vibration reducing effect of the diesel generator is improved. The diesel generator comprises the support and a diesel generator body; the support is composed of a bottom plate, a support plate, a framework, springs, an air pump and an air bag, the bottom end of the framework is closed, and the top end of the framework is open; the bottom plate is movably installed on the lower portion of the framework, the support plate is supported over the bottom plate through the springs, and the diesel generator body is fixedly connected with the upper portion of the framework and located on the support plate; the air bag and the air pump are arranged under the bottom plate, and the top end of the air bag abuts against the bottom plate; the air pump is connected with the air bag to inflate or deflate the air bag; the air pump is provided with a control unit, the framework is provided with a height sensor used for detecting the height of the bottom plate, the diesel generator body is provided with a revolving speed sensor used for detecting the revolving speed of a crank shaft, and the control unit is connected with the height sensor and the revolving speed sensor.

The present invention relates to a heat-dissipation type GPS navigation device with a vibration reduction function for outdoor work, comprising a main body, a strap, a display screen and a circuit board. The display screen is arranged on the top of the main body. The strap is arranged on the main body. The circuit board is in a shape of a cuboid. The circuit board is parallel to the display screen. The circuit board is arranged in the main body. The circuit board is provided with a GPS navigation system. A heat dissipation mechanism and four vibration reduction mechanisms are arranged in the main body. The four vibration reduction mechanisms are uniformly arranged around the circuit board. The heat dissipation mechanism comprises a driving component and two heat dissipation components. Each of the vibration reduction mechanisms comprises a fixing block, an airbag and two vibration reduction components. The heat-dissipation type GPS navigation device with a vibration reduction functionfor outdoor work not only realizes a heat dissipation function through the heat dissipation mechanism, but also realizes buffer and vibration reduction effects through the vibration reduction mechanisms, thereby preventing the circuit board from being damaged.

A device for transmitting torque comprises a centrifugal force pendulum having a pendulum flange and pendulum mass. The pendulum flange can be supported by rotating about a rotational axis, and the pendulum mass can be mounted on the pendulum flange by moving in a plane of rotation. The device for transmitting the torque further comprises a brake element which can be pressed against the pendulum mass in the axial direction for braking the pendulum mass.

The invention provides a vibration damper for an ultrahigh-voltage steel tube tower. The vibration damper comprises a damping material layer and an elastic material layer. The damping material layer is sleeved on the outer wall of a base steel tube of the ultrahigh-voltage steel tube tower. The elastic material layer is sleeved on the outer wall of the damping material layer. When the base steel tube of the ultrahigh-voltage steel tube tower is bent and vibrated by influence of wind vibration, the inner surface and the outer surface of the damping material layer respectively produce compression and extension deformation so that the damping material layer bears shear stress and strain and then the vibration energy of the base steel tube can be consumed. The elastic material layer is used for limiting the free deformation of the outer surface of the damping material layer and ensuring the cooperation between the damping material layer and the base steel tube, thereby enhancing the damping performance of components and the whole structure and realizing the function of vibration damping.

The invention discloses an active suspension having a spiral spring and a rubber spring non-concentric with each other in the technical field of vehicle suspensions. The lower end of an inner cylinderof an active force actuator extends out of an outer cylinder and is concentrically and fixedly connected with a first rubber spring; the first rubber spring consists of a rigid outer ring, a rubber main spring, a rigid guide rail and a rigid inner tube; the spiral spring which is non-concentric with the first rubber spring and the active force actuator is arranged beside the active force actuator; the upper end of the spiral spring is pressed against a connecting plate of a vehicle body; the lower end of the spiral spring is supported on a spring mounting seat fixedly connected to a lower fork arm; the lower fork arm is connected between the vehicle body and a wheel; and the upper end of the outer cylinder of the active force actuator is concentrically and fixedly connected with the lowerend of a rigid outer ring of a second rubber spring whose structure is as same as the structure of the first rubber spring. Except for a primary vibration absorbing function formed by the active force actuator and the spiral spring, the active suspension having the spiral spring and the rubber spring non-concentric with each other also has a secondary vibration absorbing function formed by the first rubber spring and a three-stage vibration absorbing function formed by the second rubber spring.

The invention provides a heavy equipment airdrop self-suction damping cargo platform (1), and relates to airdrop equipment design technique. The heavy equipment airdrop self-suction damping cargo platform is characterized in that the lower bottom surface of the cargo platform is connected with a releasing soleplate (8) by a compression spring (11); the cargo platform is also provided with two sets of releasing locks which comprise an unlocking sliding block (2) and a releasing sliding block (3) which is provided with a lock tongue (4); the lock tongue extends out by passing through the side surface of the cargo platform; a reverse pushing spring (12) is arranged between the releasing sliding block (3) and the internal wall of the lock chamber; the cargo platform is provided with a locking guiding torsion spring component which comprises a torsion spring (6) with two ends bearing the force along the same direction; one end of the torsion spring is provided with a releasing rod (5) and the other end thereof is provided with a guiding rod (10); the releasing rod (5) is restricted or released by the lock tongue; the guiding rod (10) is matched with a guiding trough (9) which is arranged on the releasing soleplate (8) so as to limit the position. The heavy equipment airdrop self-suction damping cargo platform has the advantages of simple structure, and better damping and anti-vibration effect.

The invention relates to a surveying and mapping vehicle with a vibration reduction function based on a 5G communication technology. The vehicle comprises a vehicle body, a surveying and mapping device and four cameras, and further comprises a buffering mechanism and a cleaning mechanism. The buffering mechanism comprises a cylindrical notch, a piston block, a supporting pipe and two vibration reduction assemblies. The cleaning mechanism comprises an installation bearing, a torsion spring, a support, fan blades, an air exhaust assembly and four cleaning assemblies. Each vibration reduction assembly comprises a sliding rod, a spring, a sliding sleeve and a connecting rod. The cleaning assembly comprises a first transmission rod, a second transmission rod and a cleaning brush. The air exhaust assembly comprises a first through hole, a second through hole, a first one-way valve, a second one-way valve and a communicating hose. According to the surveying and mapping vehicle with the vibration reduction function based on the 5G communication technology, shaking of the surveying and mapping device during traveling of the surveying and mapping vehicle is reduced through the buffer mechanism, the damage probability of the surveying and mapping device is reduced, the fault rate of the surveying and mapping vehicle is reduced, the cameras can be cleaned through the cleaning mechanism, and the surveying and mapping precision of the surveying and mapping vehicle is improved.

The invention relates to a small triangular crawler chassis applicable to hilly and mountainous regions. The small triangular crawler chassis comprises a frame, triangular crawler traveling mechanismsand steering mechanisms, the triangular crawler traveling mechanisms are positioned on two sides of a front axle and a rear axle on the lower portion of the frame, the steering mechanisms are positioned among the rear axle and the triangular crawler traveling mechanisms, the triangular crawler traveling mechanisms comprise crawlers, supports, driving wheels, guide wheels, tension wheels and loading wheels, the driving wheels are connected onto the supports, the guide wheels and the tension wheels are connected to two ends of the lower portions of the supports, the loading wheels are connectedto the lower portions of the supports and positioned among the tension wheels and the guide wheels, the crawlers surround the driving wheels, the guide wheels, the loading wheels and the tension wheels, dampers II and damping springs II are arranged among the tension wheels and the supports, and horizontal dampers I and damping springs I are arranged on the lower portions of the supports. According to the chassis, a sensor is combined with a lifting cylinder, the attitude of the chassis is manually or automatically leveled, multi-aspect damping is realized by the aid of the bidirectional dampers and the damping springs, and the whole chassis has higher passing ability, stability and smoothness.

The invention relates to a moveable wheel assembly which comprises a wheel, a moveable wheel installing leg (2) provided with an absorber, a steering stretching driving device, a stretching driving device for rotation of the leg and a stretching arm. Both ends of the stretching driving device for rotation of the leg are respectively hinged to the moveable wheel installing leg and a first arm section of the stretching arm. In addition, the invention further provides a vehicle comprising the moveable wheel assembly. After the moveable wheel assembly provided by the invention is installed on the vehicle, vibration attenuating and steering functions are effectively realized, and the moveable wheel assembly is driven by the stretching driving device for rotation of the leg and the stretching arm so that the height position and transverse position of the wheel are changed. According to the moveable wheel assembly provided by the invention, the wheel position is conveniently adjusted when the vehicle encounters a barrier so that the vehicle is easy to escape from difficulty. The moveable wheel assembly provided by the invention is in particular applied to a guiderail cleaning vehicle for providing possibility and support for inter-line operation, so that contradiction between sanitary work and traffic jam is solved conveniently.

The invention discloses a rear suspension oil cylinder for a heavy-duty industrial mining vehicle. The rear suspension oil cylinder is arranged at the rear part of a vehicle and used for supporting an upper vehicle frame and a lower vehicle frame and comprises a cylinder body, a guide sleeve arranged at the front end of the cylinder body, a piston rod and a piston, wherein the piston rod is in sliding fit with the guide sleeve, the piston is in sliding fit with the inner wall of the cylinder body, the cylinder body is partitioned into a rod cavity and a rodless cavity of the oil cylinder by the piston, the piston is positioned at the tail end of the piston rod, the piston and the piston rod are of an integral structure, the piston rod is provided with an inner cavity which is communicated with the rodless cavity, one end of the inner cavity is closed, an inflation valve for injecting oil and inflating air to the rodless cavity is arranged at the tail part of the cylinder body, and the piston rod is respectively and radially provided with a damping hole for communicating the inner cavity and the rod cavity and a steel ball which pushes unidirectionally against the rod cavity from the inner cavity. The rear suspension oil cylinder can be suitable for different pavement situations by making reciprocated up-down movement in the traveling process of the vehicle, and achieves the functions of shock absorption and support; and the alternate change of the damping forces can be realized in the traveling process of the vehicle due to adoption of the damping hole and the steel ball which pushes unidirectionally against, therefore the purpose of ensuring the movement stability of the vehicle is achieved.

The invention discloses a speed-reducing type wheel electric drive system of an electric vehicle. A hub is supported on a wheel support shaft on a suspension steering knuckle through a hub bearing; a first-level speed reducing gear pair is in transmission with a second-level speed reducing gear pair; a motor shaft of a wheel drive motor is in pivot joint with a slider of a sliding guide pair; a guide rail of the sliding guide pair is vertically fixed on the suspension steering knuckle; the wheel drive motor can relatively slide on the suspension steering knuckle in the vertical direction; and the slider and the suspension steering knuckle are borne by a dynamic vibration reducing spring and a dynamic vibration reducing damper. According to the invention, through the movable connection design between a drive motor and a speed reducing transmission mechanism, the dead weight of the drive motor is transformed into the mass of a dynamic vibration reducer, and thus the vibration reducing function of the dynamic vibration reducer can be realized without needing additional mass block of the dynamic vibration reducer. Through the invention, the unsprung mass of the wheel electric drive system is effectively reduced, and the dead weight of the drive motor generates an effect of reducing the negative effect of the unsprung mass of the wheel electric drive system.

The invention discloses a cooling and vibration reduction tool bar applied to machining for a large-pitch screw rod, and belongs to the technical field of machining. Aiming at the existing problems, the invention provides a cooling and vibration reduction tool bar applicable to a wide vibration frequency band, and solving the problems of high instantaneous vibration amplitude, poor cooling effectof multi-edge cutting, and the like. The invention discloses a cooling and vibration reduction tool bar applied to machining for a large-pitch screw rod. The cooling and vibration reduction tool bar applied to machining for the large-pitch screw rod comprises a cooling unit, a tool bar body, a tool bar head, a turning tool, a vibration reduction unit and a protection ring, wherein the vibration reduction unit is located at a groove of the tool bar body; a bulge part of the tool bar head is matched with the groove of the tool bar body, and fixes the vibration reduction unit; the turning tool isfixed to one end away from the bulge part, of the tool bar head; the cooling unit comprises a cooling spray head, a cooling liquid branch flow channel, a cooling liquid turning joint, a cooling liquid flow-distribution joint, a cooling liquid main flow channel and a cooling liquid connection hole; the cooling liquid branch flow channel is formed in the tool bar head and communicates with the cooling spray head; and the cooling spray head is arranged on one end surface for fixing the turning tool, of the tool bar head. The cooling and vibration reduction tool bar applied to machining for the large-pitch screw rod is mainly applied to machining for the large-pitch screw rod.

The invention relates to a navigation device with a damping function for private cars. The navigation device comprises a main body, a fixed box and a display screen, wherein the display screen is arranged on one side of the main body; the fixed box is of a cuboid shape; the fixed box is arranged below the main body; a navigation system is arranged in the main body; a heat-dissipating mechanism isarranged in the main body; two damping mechanisms are arranged in the fixed box; the heat-dissipating mechanism is positioned between the two damping mechanisms; each damping mechanism comprises a connecting rod, a first spring, a limiting block and a mounting hole; and the heat-dissipating mechanism comprises a water inlet tube, a fixed tube, a first one-way valve, two water outlet tubes and twosecond one-way valve. Through the adoption of the navigation device with the damping function for the private cars, the buffering and damping functions are realized through the damping mechanisms, andthe heat-dissipating function is realized through the heat-dissipating mechanism.

The invention discloses a bogie frame which comprises side beams and a cross beam positioned between the side beams, wherein an air spring seat for mounting an air spring is arranged on each side beam; a main air chamber of the mounted air spring is positioned in an inner cavity of each side beam; the cross beam is of a hollow seamless steel tube structure; the frame also comprises a channel; the channel is used for communicating the main air chamber of each air spring with the cavity of the cross beam. According to the frame provided by the invention, the cavity of the cross beam is used as an additional air chamber of the air spring; the cross beam is of the hollow seamless steel tube structure and is good in air tightness, so the damping requirement of the high-speed train can be met.

The invention discloses an axle box suspension device, a bogie and a railway wagon. The axle box suspension device comprises an axle box, guide frames and springs, wherein the guide frames are located on two sides of the axle box, the axle box is provided with spring bearing parts, and the springs are located between the guide frames and the spring bearing parts; two swing blocks and a spring damping gear are arranged between at least one guide frame and the spring; the two swing blocks are distributed side by side at intervals in the direction parallel to the axis of the axle box, an upper end of each swing block is matched with the guide frame in a rotatable mode, a lower end of each swing block is matched with the spring damping gear in a rotatable mode, and the swing blocks are obliquely arranged; an included angle is formed between the shaft box and the vertical direction, and a lower end deviates to the axle box; and a first friction surface of the spring damping gear and a second friction surface of the axle box form a friction pair capable of moving relatively. The device can improve dynamic performance of the vehicle and ensure that the dynamic performance of the vehicle is continuous and stable.

The invention relates to an electronic component manufacturing equipment with the impurity removing function. The equipment comprises a box body and a dispensing pipe, the box body is in a cuboid shape, the dispensing pipe is vertically arranged at the bottom of the box body and communicates with the box body, glue and an execution system are arranged in the box body, and an auxiliary mechanism and a cleaning mechanism are arranged on the dispensing pipe; the auxiliary mechanism comprises a fixing ring, a sealing disc, a magnet block, a moving pipe, two connecting blocks, two reset assembliesand two connecting assemblies, each reset assembly comprises a guide rod, a first spring, a fixing block and a guide hole, each connecting assembly comprises a sliding block, a limiting block, a fixing rod and a second spring, and the cleaning mechanism comprises two cleaning assemblies. According to the electronic component manufacturing equipment with the impurity removing function, the functionof preventing glue from dripping is achieved through the auxiliary mechanism, and in addition, the function of removing impurities on the substrate is achieved through the cleaning mechanism.

The invention provides a fracturing truck large pump bi-directional self-adaptation shock absorber. According to the shock absorber, the bottom of a box body is provided with a longitudinal shock absorbing base, the upper portion of the box body is provided with a bearing plate, a cross-shaped rubber partition plate is installed inside the box body, a longitudinal shock absorbing device is arranged inside the partition plate space, a transverse shock absorbing base, a connecting plate and a fixing rib plate are connected through bolts, transverse shock absorbing rubber is arranged between the transverse shock absorbing base and the fixing rib plate in an embedded mode, the tops of the transverse shock absorbing base and the transverse shock absorbing rubber are provided with sliding blocks, two sides of each sliding block are provided with transverse shock absorbing devices, and concave rubber is arranged between the two transverse shock absorbing devices. A longitudinal shock absorbing disc spring is sleeved on a longitudinal disc spring support, and two ends of the longitudinal disc spring support are respectively provided with a longitudinal disc spring sleeve and longitudinal shock absorbing rubber. A transverse disc spring sleeve and a transverse shock absorbing disc spring are sleeved on a transverse fixing double-thread screw, the end portion of the transverse fixing double-thread screw is fixed on the fixing rib plate through fixing nuts, and the sliding blocks are arranged between the two transverse shock absorbing disc springs.

The invention relates to a high-efficiency vertically-arranged milling cutterhead and special blades, and belongs to the technical field of cutters for metal cutting machining. A main fastening bolt hole is formed in the top of the cutterhead, the cutterhead is connected with a power transmission shaft through a bolt, the cutterhead is positioned through a key slot, so that the cutterhead can be well mounted and fixed on the main shaft, and machining vibration is reduced; a plurality of cutter grooves of vertically-arranged cutter clamps are uniformly formed in the periphery of the cutterhead,and the cutter clamps are locked in the cutter grooves through locking screws; and each cutter clamp is provided with a cutter holder for installing the special blades, the special blades are fixed in cutter holders through pressing screws, and the axial cutting depth of the special blade can be adjusted through eccentric adjusting pins. The special blades and the cutter clamps adopt a vertical installation mode, the operation is simple and convenient, the service life of a cutter can be prolonged, and the production efficiency is improved.

The invention belongs to the technical field of helicopter vibration active control, and discloses a modeling method for a secondary path of a helicopter vibration active control system. The method comprises the following steps: S1, numbering a plurality of actuators and a plurality of vibration sensors; S2, starting the ith actuator; S3, sending an output force instruction to the ith actuator; S4, after the output force of the ith actuator is stabilized, selecting vibration data of all vibration sensors in a preset time period; S5, closing the ith actuator to stop working; S6, repeatedly executing the steps S2-S5 until the vibration data of all the vibration sensors corresponding to the Nth actuator is obtained, thereby obtaining all the collected vibration data; and S7, determining a secondary path model according to all the acquired vibration data. The method is high in feasibility, short in time consumption and relatively high in effectiveness and reliability. And after the secondary path modeling is completed, if the force transmission path and the dynamic characteristics of the helicopter are not changed, modeling does not need to be carried out again.

Disclosed are an axle box suspension device and a bogie. The axle box suspension device comprises an axle box and guide frames located on the two sides of the axle box respectively, springs are arranged between the guide frames and spring bearing parts of the axle box respectively, and swing blocks and spring damping gears are arranged between one or two of the guide frames and the springs; the upper end of each swing block matches the guide frame in a rotational degree of freedom mode, the lower end of each swing block is matched with each spring damping gear in a rotational degree of freedom mode, an inclined angle is formed between each swing block and the vertical direction, and the lower end of each swing block deviates to the axle box; a first contact face is arranged on the side, corresponding to the axle box, of the spring damping gear, the spring damping gear is tightly attached to a second contact face on the side face of the axle box through the first contact face, and the first contact face and the second contact face can move relatively. The invention can improve the dynamic performance of the vehicle and ensure that the dynamic performance of the vehicle is continuous and stable.

The invention relates to wireless communication equipment with buffering and damping functions for a ship. The equipment comprises a main body, and the main body is in a cuboid shape. A signal processing system is arranged in the main body; a heat dissipation mechanism and two buffer mechanisms are arranged at the bottom of the main body; the heat dissipation mechanism is located between the two buffer mechanisms. The heat dissipation mechanism comprises a heat dissipation pipe, fan blades, a transmission shaft and a transmission assembly. The buffer mechanism comprises a water tank, a heat conduction rod, a heat conduction pipe, an extrusion disc, a spring, an assembly hole and a through hole; the water tank is arranged at the side, provided with the mounting hole, of the body, and a gapis formed between the water tank and the body. According to the wireless communication equipment with the buffering and vibration reduction functions for the ship, the heat dissipation function is achieved through the heat dissipation mechanism, and in addition, the buffering and vibration reduction functions are achieved through the buffering mechanism.

The invention discloses a front suspension oil cylinder for a mining vehicle. The front suspension oil cylinder is arranged between an upper vehicle rack and a lower vehicle rack, and comprises a cylinder body, a cylinder bottom fixed at the tail end of the cylinder body, a piston rod matched with the cylinder body inner wall liquid seal in a sliding manner and a piston, wherein a ring sleeve of the piston is fixed at the tail end of the piston rod; the piston rod is provided with an inner chamber of which one end is closed and communicated with a rodless cylinder cavity of the cylinder body; and a non-return valve and a damping hole for communication of the inner chamber and a rod cylinder cavity of the cylinder body are radially formed at the piston rod near to the piston. According to the invention, in the vehicle moving process, the oil cylinder can repeatedly move up and down by the incentive effect of the road surface to adapt to the conditions of the road surface, so as to achieve the functions of vibration damping and support; and by utilizing the non-return valve and the damping hole formed on the piston rod in the moving process, alternate change of damping in size can be realized to achieve the purpose of guaranteeing the motion stability of the vehicle.

The invention relates to the technical field of ultrasonic machining, and discloses a transducer with a large-size flange and an amplitude changing pole of the transducer. The amplitude changing polecomprises an amplitude changing pole body and the flange arranged on the outer edge of the amplitude changing pole body. The front end of the amplitude changing pole body is used for installing a machining tool, and the periphery of the flange is used for being connected with an ultrasonic machining device body. The flange is provided with a damping structure for reducing transmission of ultrasonic vibration from the amplitude changing pole body to the ultrasonic machining device body. The range of the specific value of the outer diameter of the flange to the outer diameter of the amplitude changing pole body is 1.5:1-3:1. The transducer with the large-size flange and the amplitude changing pole of the transducer have the beneficial effects that through increasing of the radial size of theflange, integral rigidity of the amplitude changing pole can be ensured, meanwhile, the damping structure can be better arranged on the flange, ultrasonic vibration transmitted to the ultrasonic machining device body from the amplitude changing pole through the flange can be effectively reduced, accordingly, ultrasonic vibration energy losses are reduced, it is ensured that the ultrasonic vibration energy is effectively transmitted to the machining tool, and accordingly the ultrasonic machining efficiency of the machining tool is improved.

The invention relates to a heat dissipation type public transportation system payment device based on a block chain technology. The device comprises a main body, a supporting rod and an induction plate, wherein the main body is in a cuboid shape; a payment system is arranged in the main body; a through hole is formed in the top of the main body; the induction plate is parallel to the top of the main body and is positioned in the through hole; the induction plate is in sliding and sealed connection with the inner wall of the through hole; the supporting rod is perpendicular to the induction plate; a mounting hole is formed in the bottom of the main body; the supporting rod penetrates through the mounting hole; the supporting rod is in sliding and sealed connection with the inner wall of themounting hole; a processor and a memory are arranged in the main body; the processor is electrically connected with the memory; and a memory receives block chain data written by block chain nodes andstores the block chain data. According to the heat dissipation type public transportation system payment device based on the block chain technology, the functions of buffering and vibration reductionare achieved through a vibration reduction mechanism; and in addition, the function of heat dissipation of the main body is achieved through a heat dissipation mechanism.