163results about How to "Improve anti-offset performance" patented technology

The invention discloses a dynamic wireless charging apparatus and a parameter acquiring method thereof. The dynamic wireless charging apparatus comprises an energy emitting module and an energy receiving module. The energy emitting module comprises a high-frequency inversion unit, an LC filter unit, a first compensation unit, and a power emitting coil which are successively connected. The high-frequency inversion unit converts DC power into high-frequency AC power. After the high-frequency AC power is adjusted by the LC filter unit and the first compensation unit, energy is emitted in a high-frequency magnetic field coupling mode. The energy receiving module comprises a power receiving coil, a second compensation unit, and an uncontrolled rectification unit which are successively connected, and converts received high-frequency AC power into DC power supplied to a load. The dynamic wireless charging apparatus may automatically adjust the current of a primary-side power coil according to the mutual inductance coupling degree of the power coil so as to obtain a characteristic maintaining stable output power, is suitable for dynamic wireless charging application occasions with a wide bias, and has high transmission efficiency and a soft switch characteristic. In addition, compensation topology provides a primary side inversion power supply with a zero-load current-limiting protection function.

The invention relates to a free hydraulic forging press comprising a frame press body, a mobile worktable and a hydraulic cylinder, wherein the frame press body comprises an upper cross beam, a sliding block, upright posts and a lower cross beam, and the mobile worktable is connected with the press body. The free hydraulic forging press is characterized in that the frame press body is in an integral pre-stressed structure, that is to say, each upright post is in a hollow structure; a pre-stressed pull rod penetrates through and is arranged in a center hole of each upright post and extends outof the upper cross beam and the lower cross beam; pre-stressed nuts are respectively arranged at the end part of each pre-stressed pull rod; a plunger piston unbalance loading resisting mechanism is arranged on the hydraulic cylinder; a guide device is arranged between the upright post and the sliding block; a stepped mobile mechanism is arranged below the mobile worktable; and a leveling device is arranged below the mobile worktable. The invention has the advantages of large nominal force, strong unbalance loading resistance, long sliding stroke and the like; and the mobile worktable has long moving stroke.

The invention relates to a sliding block guide track structure of a four-column hydraulic press. The sliding block guide track structure is characterized in that the four columns of the hydraulic press are rectangular, guide tracks are arranged on the four side surfaces of each column, rectangular guide chambers matched with the column guide tracks are arranged at the four corners of the sliding block of a hydraulic press, and a guide plate and an adjusting device matched with the guide tracks are correspondingly installed on the internal side of each guide chamber. The thrust surface of a sliding block guide mechanism is increased, the problem that the clearance between guide tracks becomes smaller because of unbalance loading is solved, the strength and the unbalanced loading resistanceof the sliding block guide mechanism are greatly improved and the service life of the sliding block guide mechanism is improved; and the installation is easy and the adjustment of the clearance between guide tracks is convenient.

The present invention provides an electric vehicle wirelessly powered type electromagnetic coupling mechanism. On the basis of the segmented guide rail power supply mode, a primary-side energy transmission mechanism adopts a T-shaped magnetic core and an L-shaped coil, so that the self-inductance value is reduced. Meanwhile, the resonant voltage is reduced and the safety of the system is guaranteed. The internal resistance of the coil is reduced and the system efficiency is improved. A secondary-side energy pickup mechanism adopts the multi-coil parallel mode, so that the electric energy pick-up capability of a pickup terminal is optimized. Therefore, the pick-up power is greater. The anti-offset capability of energy transmission is improved and the power transmission stability is ensured.

The invention discloses a high-speed fine press having a structure that one end of a double-crank rod which has 180-degree phase difference is connected with a movable slide block by a main connecting rod, the other end of the double-crank rod is connected with an auxiliary slide block by an auxiliary connecting rod, same multiple-rod branch chains are symmetrically arranged at the left sides and the right sides of the movable slide block and a pressing slide block so as to connect the movable slide block and the pressing slide block together; the movable slide block makes reciprocation movement up and down under the drive of the double-crank rod and the main connecting rod so as to push a lower connecting rod, an upper connecting rod and a swinging block to swing at two sides through the push of push rods of the two multiple-rod branch chains, and the pressing slide block is further driven to do reciprocation movement up and down, and a workpiece is placed under the pressing slide block, therefore, the pressing processing of metal or nonmetal workpieces is completed. A parallelogram structure of a movable branch chain of the invention can ensure that the pressing slide block is always kept in a horizontal position and the force at horizontal direction of the pressing slide block can be balanced by a mechanism, thereby the capability of uneven loading resistance and the machining precision of the press are enhanced.

The invention discloses a constant-current output radio energy transmission system capable of improving the anti-deviation ability, and belongs to the technical field of radio energy transmission, which comprises a primary side energy emission module used for transmitting the energy output from an alternating voltage source Vi to a primary side energy transfer module and a secondary side energy pickup module; A primary energy relay module for receiving a portion of the energy emitted by the primary energy relay module and transmitting the energy to the secondary energy relay module; A secondary energy relay module for receiving energy emitted by the primary energy relay module and transmitting the energy to the secondary energy pickup module; A secondary side energy pickup module for receiving energy emitted from the primary side energy emitting module and the secondary side energy relay module and outputting the energy to the AC equivalent load Rac, The invention solves the problems that the prior art has complex structure, high cost, potential safety hazard and low system efficiency when the prior radio energy transmission system deviates from the prior art.

The invention provides a hydraulic system of a stepless speed regulation hydropress, belongs to the hydraulic system of a hydropress, and solves the problems that an existing deviation-rectifying synchronous control system is not high in control precision and has a bad capability of resisting unbalance loading. The hydraulic system comprises a first hydraulic cylinder, a second hydraulic cylinder, a sliding block, a first flow pump, a second flow pump, a third flow pump, a first servo valve, a second servo valve, a third servo valve and a fourth servo valve, wherein the first flow pump, the second flow pump and the third flow pump are respectively driven by a first motor, a second motor and a third motor. By applying the hydraulic system, the stepless speed regulation can be available within a certain scope, and the problem that a stepless speed regulation technology of a traditional hydropress is narrow in adaptive aspect is solved; according to different speeds, a different quantity of flow pumps are used; the direct return of large-flow high pressure liquid to an oil tank is avoided, so that the energy can be effectively saved; when one small flow pump and the servo valve connected with the small flow pump are adopted for synchronous regulation, the precision of synchronization between the first hydraulic cylinder and the second hydraulic cylinder is effectively improved, and the unbalance loading resistance capability of equipment is improved.

The invention is applied to the technical field of wireless charging, and discloses a wireless charging and coupling structure and a design method thereof. The wireless charging and coupling structurecomprises a transmitting end and a receiving end which are arranged oppositely, an air gap is formed between the transmitting end and the receiving end, and the receiving end and the transmitting endare arranged coaxially. The transmitting end sequentially comprises a first aluminum plate, a first magnetic core arranged on the first aluminum plate and a first resonant coil arranged on the firstmagnetic core from outside to inside, wherein the first resonant coil is arranged concentrically with the first magnetic core; the receiving end sequentially comprises a second aluminum plate, a second magnetic core arranged on the second aluminum plate and a second resonance coil arranged on the second magnetic core from outside to inside, wherein the second resonance coil is arranged concentrically with the second magnetic core; and the radius of the first magnetic core is larger than the radius of the second magnetic core, and the radius of the second resonance coil is larger than the radius of the second resonance coil. According to the resonant type electric automobile wireless charging and electromagnetic coupling structure, the coupling degree is improved, the magnetic leakage is reduced, the magnetic loss is reduced, the charging efficiency is improved, the volume and the weight of the magnetic cores are reduced, and the anti-migration capability of the system is improved.

The invention relates to a twelve-motor parallel drive multi-link mechanical servo press, which belongs to the technical field of forging machinery. The twelve-motor parallel drive multi-link mechanical servo press comprises a rack, linear drive mechanisms, a parallel mechanism, a toggle mechanism and stamping sliders, wherein the linear drive mechanisms comprise six groups with the same structure; the parallel mechanism is a six-degree-of-freedom parallel mechanism; the six groups of linear drive mechanisms are connected with the six-degree-of-freedom parallel mechanism; the toggle mechanism is connected with the six-degree-of-freedom parallel mechanism and the stamping sliders respectively; and the rack is sleeved outside the drive mechanisms and the stamping sliders. The twelve-motor parallel drive multi-link mechanical servo press has the advantages of simple structure, easy control, low manufacturing cost, and capability of solving the problem that large-tonnage servo presses cannot be built because the conventional servo presses are limited by poor loading capacity of ball screws and small power and output torque of servo motors.

The invention discloses a booster for a servo press, which comprises a frame, four moving branched chains of the same structure, a sliding platform, a guide rod and two links. The four same moving branched chains are symmetrically arranged, wherein two branched chains are jointly connected to one link to form a left mechanism of a symmetric mechanism, the other two branched chains are jointly connected to the other link to form a right mechanism of the symmetric mechanism, each branched chain comprises three connecting rods, one connecting rod is connected to the guide rod, one connecting rod is connected to the sliding platform, and the rest connecting rod is connected to the frame. Four-point output of the four branched chains on the sliding platform can be obtained by means of input of the guide rod. Besides, the booster has a great boosting effect at some positions of the sliding platform, namely a great output force can be obtained at the position of the sliding platform by applying a small input force to the guide rod. The booster is simple in structure, low in manufacturing cost and capable of effectively solving the problem that an existing servo press cannot realize four-point output through single-point input.

The invention relates to a weight detection device, in particular to an ice coating detection device for a cable. The ice coating detection device comprises a fiber grating wavelength modulator, an optical divider and a fiber grating weighing sensor, wherein the fiber grating wavelength modulator is connected with the optical divider through a signal transmission optical cable; the optical divider is connected with the fiber grating weighing sensor through a signal transmission optical cable; the upper end of the fiber grating weighing sensor is fixedly suspended, and the lower end of the fiber grating weighing sensor is connected with the cable; an elastic body is arranged in the middle of the fiber grating weighing sensor; the elastic body is provided with the fiber grating sensor; a broadband light source is arranged in the fiber grating wavelength modulator; the broadband light source is transmitted to the fiber grating sensor through a signal transmission optical cable; the fiber grating sensor is used for transmitting a wavelength signal of reflected light of the broadband light source to the fiber grating wavelength modulator; and the fiber grating wavelength modulator is used for obtaining the weight change of the cable according to a received wavelength signal. Due to the adoption of the ice coating detection device, the ice coating condition of the cable can be effectively detected.

The invention discloses an induction type wireless electric energy transmission system with strong anti-offset capability, and belongs to the field of wireless electric energy transmission. The invention aims to solve the problem of poor offset resistance of the traditional compensation topology. An output voltage of an inverter circuit is provided for a load through a rectification circuit afterpassing through a primary side compensation topology, a loose coupling transformer and a secondary side compensation topology; the primary side compensation topology, the loose coupling transformer and the secondary side compensation topology are equivalent to a compensation topology controlled source model; a ratio relationship between the output voltage of the secondary side compensation topology and the input voltage of the primary side compensation topology is obtained; according to the target ratio relation, primary side coil self-inductance and secondary side coil self-inductance of theloose coupling transformer, equivalent impedance corresponding to the compensation inductor L1 and the compensation capacitor C1, equivalent impedance corresponding to the primary side coil self-inductance and the compensation capacitor C2, equivalent impedance corresponding to the secondary side coil self-inductance and the compensation capacitor C3, and equivalent impedance corresponding to thecompensation capacitor C4 are determined. According to the invention, the anti-offset capability of the system can be remarkably improved, and zero-phase angle input is realized.

The invention provides a three-transmitting-coil coupling mechanism and a magnetic coupling WPT system formed by the three-transmitting-coil coupling mechanism. A transmitting end comprises a first coil, a second coil and a third coil. The first coil is a multi-turn coil formed by winding an independent wire, and a peripheral charging area is formed; the second coil and the third coil are multi-turn coils which are formed by connecting another independent wire in series in an unwound area in the first coil and winding in sections, and a central charging area is formed; and non-winding areas are reserved in the third coil and between the third coil and the second coil, the first coil is connected with the first resonance compensation circuit and works at a first resonance frequency, and thesecond coil and the third coil are connected in series and then are connected with the second resonance compensation circuit and work at a second resonance frequency. The system has the effects thatthe anti-offset capability is improved, the system cost is reduced, and the system can be applied to mobile equipment application occasions with different power levels.

The invention discloses a composite type energy-absorbing anti-creeper of a rail vehicle. The composite type energy-absorbing anti-creeper comprises a piston rod, a flange, an inner sleeve and an outer sleeve, wherein the inner sleeve is arranged in the outer sleeve in a sealing mode; damping liquid is arranged in the inner sleeve; one end of the piston rod is equipped with a piston which can be in sliding connection to the inner sleeve; a damping hole is formed in the inner sleeve; a damping hole sealer is arranged on the damping hole; a guide hole which is in sliding connection to the pistonrod is formed in the flange; one side of the flange is fixedly connected to one end of the inner sleeve and one end of the outer sleeve; the other side of the flange is equipped with a cutting tool;and the cutting tool extends into a guide slot in the piston rod. According to the anti-creeper disclosed by the invention, a cut cutting part pushes the piston to extrude the damping liquid to absorbenergy, so that energy absorption and electric load resistance of the device are greatly improved, and therefore, the anti-creeper is high in collision force stability and energy-absorbing efficiency, and is good in energy-absorbing adjustability; and damping hole sealers of different specifications are selected, so that rail vehicle collision working conditions under different speed grades can be met, and therefore, collision resistance of the rail vehicle are improved.

The invention discloses an electrically-controlled multifunctional combined proportional variable axial plunger pump which comprises a plunger pump main body and a variable mechanism, wherein the variable mechanism is arranged on one side of the plunger pump main body. The plunger pump main body comprises a pump body and a variable disk which is arranged inside the pump body, the variable mechanism comprises a variable plunger, a first oil cavity and a second oil cavity, the variable plunger is connected with the variable disk, the first oil cavity and the second oil cavity are formed at the two ends of variable plunger, and a hydraulic control system is further arranged on the outer side of the pump body. The hydraulic control system comprises a controller, a servo proportional valve, a transitional plate, a position detection mechanism and a pressure detection mechanism, wherein the servo proportional valve is connected with the controller and is used for controlling the flow quantity of oil, the position detection mechanism is used for monitoring the position of a plunger, the pressure detection mechanism is used for monitoring the pressure in the oil outlet of the plunger pump main body, the transitional plate is mounted on the outer side of the pump body, the transitional plate is provided with two oil outlets, the two oil outlets are communicated with the first oil cavity and the second oil cavity respectively, and the position detection mechanism and the pressure detection mechanism are respectively connected with the controller. The electrically-controlled multifunctional combined proportional variable axial plunger pump has the advantages that the flow quantity, the pressure and the power of a hydraulic pump can be controlled simultaneously, and energy consumption is low.

There are provided a release agent capable of attaining a toner excellent in an anti-offset property and an anti-filming property, without detaching from a kneaded mass even in a case of granulating by heating a dispersion medium containing the kneaded mass, as well as a toner using the release agent and a manufacturing method thereof. A release agent containing a compatible site having compatibility with the binder resin and a releasing site chemically bonded with the compatible site and having the releasing ability is used as the release agent when preparing a kneaded mass by melt-kneading at least a binder resin, a colorant, and a release agent, whereby detachment of the release agent from the kneaded mass can be prevented in producing particles of kneaded mass as the toner particles by mixing the kneaded mass to an aqueous medium prepared and heating and stirring them.

The invention provides a wireless charging system double-DD coupler and a method and system for determining structural parameters of the wireless charging system double-DD coupler. The coupler comprises a primary side electric energy emission side and a secondary side electric energy pickup side, and the two sides are of a double-layer structure and formed by orthogonally overlapping two DD coilswith the same length and width. Moreover, the double-layer DD coil structure can be further covered with a ferrite shielding layer to enhance the coupling performance of the coupler. According to themethod and the system for determining the structural parameters of the coupler, the structural parameters of the coil are determined according to the output power level of the equipment to be charged,the coil design cost, the size limiting condition of an application scene, the volume limiting condition of a ferrite strip and the cost, and the structural parameters of the ferrite strip in the ferrite shielding layer are determined according to the structural parameters of the coil. According to the double-DD coupler, the output power of a wireless charging system is improved, the difficulty of cross coupling on system analysis is reduced, and the method and the system shorten the structural parameter analysis and processing period of the coupler.

The invention discloses a coupling mechanism applied to an electric vehicle wireless power transmission system. The coupling mechanism comprises a ground end electric energy transmitting mechanism composed of an end rectangular transmitting coil, a ground end E-shaped ferrite and a ground end shielding aluminum plate, and a vehicle end electric energy receiving mechanism composed of a vehicle endsquare receiving coil, a vehicle end E-shaped ferrite and a vehicle end chassis shielding aluminum plate. An electric vehicle wireless power transmission system is constructed, circuit simulation parameters of the system are determined, and comparative analysis is performed on the coupling coefficient change and the Litz wire length of a traditional coupling mechanism under the offset condition. After being applied to an electric vehicle wireless power transmission system, the coupling coefficient between the two coils can be increased during normal work, the use of Litz wires of the coils isreduced, and the system loss is reduced; under the working condition that the coupling mechanism is not aligned, the anti-offset capability is enhanced, the safety and stability of the system are improved, normal work can still be ensured when the offset is large, and the safety and reliability of the wireless power transmission system are ensured.

The invention provides an energy absorbing element. The energy absorbing element comprises two first mounting plates, two bent plates which are connected at interval positions of the two first mounting plates and distributed symmetrically, and an energy absorbing piece which stretches along the symmetric axes of the two bent plates and has two opposite ends respectively and fixedly connected withthe two first mounting plates, the bent plates comprise bent bodies and two connecting parts which are positioned at two opposite ends of the bodies and respectively connected with the two first mounting plates; the bent positions of the bodies are provided with grooves, and the thicknesses of the connecting parts are less than that of the bodies; the invention further provides an energy absorbingdevice. Cooperation among the first mounting plates, the bent plates and the energy absorbing piece is adopted, by accurately reducing local structure strength of the bent plates, the energy absorbing piece is subjected to folding shrinkage deformation along the symmetric axes of the two bent plates in the process of collision, and an additional guiding structure does not require to be arranged,thereby solving the problems that the energy absorbing device is unable to bear eccentric load under the condition of not having a guiding structure to support and a backward moving space is reservedwhen the guiding structure needs installing.

The invention discloses a dual-cylinder dual-frame plate-and-frame hydraulic press having a large table surface and capable of bearing 20,000 tons or 30,000 tons. The hydraulic press comprises a chassis and a workbench arranged on the chassis, wherein the chassis consists of a plurality of independent plates and frames which are arranged in parallel; and the plates and the frames are breadthwise pre-tightened and fixed through a plurality of groups of high-strength screw rods arranged up and down to form two groups of plate-and-frame chassis. The upper part of the inside of the chassis is fixed with a downward master hydraulic cylinder and four quick hydraulic cylinders which are positioned in the corners of the master hydraulic cylinder; the piston of each quick hydraulic cylinder is fixed with a downward guide post; the lower end of a plunger piston of the master hydraulic cylinder is fixed with a walking beam of which the four corners are fixed on the four guide posts; the four corners at the lower part of the chassis are also provided with four levelling hydraulic cylinders corresponding to the quick hydraulic cylinders; and the pistons of the levelling hydraulic cylinders are fixed to the lower ends of the guide posts. The dual-cylinder dual-frame plate-and-frame hydraulic press having the large table surface has the advantages that: the bias load resisting capacity is improved; the distortion of the chassis of the press is reduced; the parallelism between a slide block (namely the walking beam) and the workbench, and the operating verticality of the slide block in the working stroke of the press are ensured; and the weight and cost of equipment are reduced remarkably.

The invention discloses a vertical imposed load device of a hydraulic support, relates to the field of a test device of the hydraulic support, and aims at providing an adaptive test device for the hydraulic support. A test device for a vertical imposed load of the hydraulic support comprises a base (1), a double-spherical-hinge oil cylinder (2), a loading platform (3), a gas adjustment mechanism (4), a first guide rail (5) and a stand column (6), wherein the stand column (6) is inserted into the base (1) and is fixed in the base (1) through a hinge pin or welding; the first guide rail (5) is fixed on the stand column (6); the gap adjustment mechanism (4) is fixed on the loading platform (3); one end of the double-spherical-hinge oil cylinder (2) is fixed on the loading platform (3), and the other end of the double-spherical-hinge oil cylinder (2) is fixed in the base (1); the loading platform (3) can slide along the first guide rail (5) up and down. The test device for a vertical imposed load of the hydraulic support can perform tests of support performance and contraction allowance performance of the hydraulic support, has the characteristics of strong bias load resisting ability and gap adjustability, and can be effectively leveled.

The invention discloses an electric proportional variable axial plunger pump comprising a plunger pump body and a variable mechanism arranged on one side of the plunger pump body. The plunger pump body comprises a pump body and a variable tray arranged inside the pump body. The variable mechanism comprises a variable piston connected with the variable tray and a first oil chamber and a second chamber which are formed at two ends of the variable plunger. A hydraulic control system is further arranged on the outer side of the pump body, and comprises a controller, a proportional direction value, a transition plate and a detection mechanism, wherein the proportional direction value is connected with the controller and used for controlling flow of oil, the detection mechanism is used for detecting the position of the variable piston, the transition plate provided with two oil outlets is mounted on the outer side of the pump body. The two oil outlets are communicated with the first and second oil chambers respectively, the proportional direction valve is mounted on the transition plate, and the detection mechanism is connected with the controller. The electric proportional variable axial plunger pump has the advantages of simplicity in control, high reliability and repeat accuracy, and emission can be regulated in real time during operation.

The invention relates to a large eccentric load multifunctional forging hydraulic machine. The large eccentric load multifunctional forging hydraulic machine is composed of upper cross beams, lower cross beams, four stand columns, pull rods, nuts, a sliding block with a cylinder, a side cylinder and a return cylinder. A movable workbench is arranged on the lower cross beams. The forging hydraulic machine is characterized in that the sliding block with the cylinder and the four stand columns are provided with mutually matched guiding devices; the side faces of all corners of the sliding block with the cylinder are each provided with a groove; the three side faces adjacent to each groove are each provided with a guide rail assembly, and the three side faces adjacent to each stand columns are each provided with a fixing guide plate matched with the corresponding guide rail assembly, so that a four-corner twelve-face overall guiding structure with the anti-eccentric load capacity of the hydraulic machine is formed; and a workbench detecting transmission device is mounted on the lower cross beams. The hydraulic machine has the advantages that the anti-eccentric load capacity of a press can be greatly improved, the hydraulic machine is prevented from being damaged, the service life is prolonged, and the user input cost is lowered; a mechanical transmission mode meets the hot die forging using requirement and is accurate in detection without being influenced by high temperatures, and the quite high sensitivity is maintained all the time under the high frequency application working condition. The forging requirements of various workpieces are met, and the workpiece quality and production efficiency are improved.

The invention provides a designing method of a constant-pressure oil supply type load-deflection resistance horizontal type servo oil cylinder. The horizontal type servo oil cylinder comprises a cylinder body, a cylinder cover and a piston rod, wherein a guide sleeve of the cylinder cover is provided with oil pads not symmetrical up and down in the axis direction, the oil pad on the lower side of the piston rod is a supporting oil pad, the oil pad on the upper side of the piston rod is a bearing reaction oil pad, a hydraulic loop in front of a center oil inlet of each oil pad is connected with a damper, an independent oil supply system supplies pressure oil to the oil pads at the same time, and the pressure of the pressure oil provided by the oil supply system keeps unchangeable. According to the servo oil cylinder designed according to the method, in the whole working process, the piston rod and a piston keep a certain gap all the time, the guide sleeve and the cylinder body also keep a certain gap all the time, oil film lubrication is formed, friction between the piston rod and the guide sleeve as well as between the piston and the cylinder body is reduced, the bearing capacity and the load-deflection resistance capacity of the system are improved, the reliability of the horizontal type servo oil cylinder is greatly improved, and the service life of the horizontal type servo oil cylinder is prolonged greatly.

The invention discloses a tension and torsion double-component strain sensor and relates to the technical field of sensors, particularly to the improving technology of strain sensors. The tension and torsion double-component strain sensor comprises a lower threaded flange connector, an upper threaded flange connector and bearing columns; both the lower threaded flange connector and the upper threaded flange connector are of a cylindrical structure; the bottom surface of the lower threaded flange connector and the top surface of the upper threaded flange connector are provided with transverse grooves and longitudinal grooves respectively, and the transverse grooves are perpendicular to the longitudinal grooves; the four bearing columns are vertically arranged and connected between the lower threaded flange connector and the upper threaded flange connector and evenly distributed on the circumference which takes the axis of the lower threaded flange connector as the center; a strain sheet for measuring axial tension is adhered to the center of the four bearing columns; strain sheets for measuring torsion are adhered to the roots of the four bearing columns. The tension and torsion double-component strain sensor solves the problems of poor unbalance loading resisting capacity and large position errors of sensors due to influence of the processing precision during the mechanical machining of elastomers of existing strain sensors.

The invention relates to the technical field of rail type dynamic wireless charging, and particularly discloses a guide rail type dynamic wireless charging system capable of correcting the position and a position correcting method thereof. A primary side structure of the system comprises multiple sections of guide rail type wireless energy transmitting coils and multiple sections of guide rail type primary side position detecting coils arranged on the two sides of the multiple sections of guide rail type wireless energy transmitting coils. A secondary side structure comprises a wireless energyreceiving coil matched with the multiple sections of guide rail type wireless energy transmitting coils and a secondary side position detection coil arranged above the wireless energy receiving coil.The current change of the primary side position detection coil is detected to reflect the coupling condition change of the primary side position detection coil and the secondary side position detection coil, so that the position deviation condition of the secondary side structure is detected, the position of the secondary side structure is further adjusted, the position deviation detection precision of the guide rail type dynamic wireless charging system is improved, the deviation resistance of the guide rail type dynamic wireless charging system is improved, and efficient energy transmissionof the primary side structure and the secondary side structure is achieved.

The invention discloses a cutting type railway vehicle energy absorption anticreeper. The cutting type railway vehicle energy absorption anticreeper comprises a piston rod, a cylinder body, an inner sleeve, a flange and a cooling pipe. The inner sleeve and the cylinder body are internally provided with cooling liquid. The inner sleeve and one end of the cylinder body are each connected with one side of the flange. The flange is provided with a guiding hole, wherein the piston rod is connected with the guiding hole in a sliding manner, and the guiding hole is aligned with the inner sleeve. A cutting tool is mounted at the other side of the flange and extends into a guiding groove in the piston rod. The cooling pipe unidirectionally extends to the mounting position of the cutting tool in a communicating manner from the interior of the cylinder body. The end, away from the flange, of the inner sleeve is provided with a damping hole, wherein the damping hole communicates with the cylinderbody. According to the cutting type railway vehicle energy absorption anticreeper, the mode that the tool is cooled through the cooling liquid is adopted; the probability that the tool is molten in the cutting process is lowered; reliability of the cutting tool is improved; meanwhile, after cutting, a cutting portion pushes a piston to extrude the cooling liquid in the cylinder body, and when vehicle collision occurs, part of kinetic energy can be converted into kinetic energy and pressure energy of the cooling liquid; and the breakage probability of the tool is lowered.

The invention relates to the technical field of unmanned aerial vehicle wireless charging, and in particular discloses an unmanned aerial vehicle electric field coupling mechanism, a wireless chargingsystem, a platform and an unmanned aerial vehicle. The unmanned aerial vehicle electric field coupling mechanism comprises a transmitting end and a receiving end, the transmitting end comprises a transmitting end upper circular truncated cone and a transmitting end lower circular truncated cone which are separated from each other by a first preset height, and the receiving end comprises a receiving end hollow upper circular truncated cone and a receiving end hollow lower circular truncated cone which are separated from each other by a second preset height; the transmitting end is made of solid insulating materials, the outer side face is covered with first metal foil, the receiving end is made of light insulating materials, and the inner side face is covered with second metal foil. Insulating isolation layers are arranged on the outer surface of the first metal foil or / and the outer surface of the second metal foil. The coupling mechanism can improve the anti-offset capability of thecharging system and reduce the flight power consumption of the unmanned aerial vehicle, the cost is low, too high voltage and current impact is not generated in the moving-in and moving-out processesof the unmanned aerial vehicle, and when metal conductors exist between the coupling mechanisms or around the coupling mechanisms, eddy current loss of the conductors cannot be caused.

The invention provides a single-capacitor coupling mechanism and system for wireless charging of an unmanned aerial vehicle and the unmanned aerial vehicle, the coupling mechanism comprises a transmitting end and a receiving end, the transmitting end is provided with a charging circular truncated cone with a small upper part and a large lower part, and the side surface of the charging circular truncated cone forms a primary side transmitting polar plate by laying a metal film; the receiving end is provided with a circular-truncated-cone-shaped receiving cover matched with the charging circular truncated cone, and the side face of the circular-truncated-cone-shaped receiving cover forms a secondary side receiving polar plate by laying a metal film. And the primary side transmitting polar plate and the secondary side receiving polar plate form a single-capacitor electric field coupling mechanism to realize wireless charging. In a system formed by the system, the transmitting end is further provided with a direct-current power supply, an inverter and a primary side circuit topological structure, and the receiving end is further provided with a rectifying and filtering device and a rechargeable battery pack. The single-capacitor coupling mechanism has the advantages that the structure is simple, the weight is light, the coupling capacitance value can be greatly improved, deviation can be corrected through the gravity of the unmanned aerial vehicle, the anti-deviation capacity of the system is improved, and meanwhile the requirements for frequent load switching and portability of the small unmanned aerial vehicle can be met.