86results about How to "Reduce vibration disturbance" patented technology

The invention discloses a railway fastener abnormality detection system based on monocular vision and laser speckles. The railway fastener abnormality detection system is used for detecting whether fasteners are abnormal or not and comprises laser speckle projectors, area array cameras, a wheel encoder, an RFID detector and an industrial personal computer, wherein the laser speckle projectors andthe area array cameras are arranged above a bottom sleeper of a train body, the laser speckle projectors are positioned right above the fasteners and project laser speckles towards fastener areas perpendicularly, the wheel encoder is fixed on a rotating shaft of a wheel and connected with the area array cameras, the RFID detector is fixed below the train body, and the industrial personnel computerpositioned in a carriage is connected with the area array cameras, the wheel encoder and the RFID detector. The railway fastener abnormality detection system has the advantages that with mottled grains on the surfaces of the fasteners increased through the laser speckle projectors, image block matching precision can be improved and the three-dimensional topography of the fasteners is constructedaccurately, so that various abnormalities of different types of fasteners can be detected effectively.

The invention provides a method and a device used for purifying and ingot-casting of multi-temperature area silicon material; the silicon material is added into a crucible after a fluxing medium is added; the silicon material is inductively heated, fused and vacuum-smelted; furthermore, oxidative gas is added to carry out the reaction; subsequently, temperature reducing and directional solidification are carried out to the silicon material to form silicon ingots by crystallization. The device comprises a crucible system, a lifting device, an induction heater and a resistance heater; the induction heater is arranged on the upper surface of the resistance heater so as to respectively form an induction heating area and a resistance heating area; the lifting device is arranged on the lower surface of the resistance heating area and can move up and down in the induction heating area and the resistance heating area; and the crucible system is arranged on the lifting device. The method and the device can be used for purifying and ingot-casting the silicon ingot with high purity and high purification efficiency, can complete the whole process in one furnace body and can save the time and energy resource.

The invention discloses a shock absorbing device, comprising a main shock absorbing device, the two ends of the main shock absorbing device are provided with the shock absorbing device; the main shock absorbing device comprises a casing, the two sides of the pipe wall of the casing are symmetrical A travel groove is opened, and a first electromagnet and a second electromagnet are respectively provided at both ends of the inner sleeve, the first electromagnet and the second electromagnet are arranged coaxially, and the first electromagnet and the second electromagnet are arranged on the same axis. The polarities of the irons repel each other, the two side walls of the first electromagnet and the second electromagnet are symmetrically and fixedly connected with connecting rods matched with the stroke grooves, and the top and bottom ends of the sleeve are sleeved with sleeves. The connecting rods pass through the stroke grooves, and the connecting rods are all fixed to the connecting collars, the outer parts of the sleeves are sleeved with shock-absorbing springs, and two ends of the shock-absorbing springs are respectively connected with a ferrule. The invention utilizes the principle of repulsion of opposite sexes of electromagnets, and offsets the vibration energy through the repulsion force of the electromagnets, which can effectively reduce the vibration.

The invention discloses a testing system and a testing method for the propeller ground test in the near space. The system comprises an incoming flow simulation system, a propeller rotating speed control system, a data measurement system and a support. The data measurement system comprises a two-component balance and a data acquisition and control module. The forward velocity and the rotating speed of a propeller are respectively and precisely controlled by a trailer and a motor. The propeller rotating speed control system comprises a motor, wherein the motor is fixed inside the two-component balance. The end portion of the output shaft of the motor extends out of the two-component balance. The propeller is fixed at the end portion of the output shaft of the motor and is driven by the motor to rotate. The support is of a cantilever beam structure, and the rear end of the cantilever beam structure is fixed at the front end of the head part of the trailer and is extending forwardly. The two-component balance is fixed at the front end of the support. According to the technical scheme of the invention, the test state is simulated by utilizing a track trailer. The forward velocity of the trailer is relatively low and the velocity control precision of the trailer is relatively high. Therefore, a stable incoming-flow environment is provided for the propeller.

The invention discloses a railway track fastener anomaly detection system based on binocular vision and laser speckle, comprising laser speckle projectors, cameras, laser displacement sensors, a wheelencoder, an RFID (radio frequency identification) detector and an industrial personal computer, wherein the laser speckle projectors and the cameras form a binocular stereo vision speckle imaging system for performing three-dimensional stereo measurement on fasteners; the laser displacement sensors are used for measuring mounting supporting heights of the fasteners so as to control imaging of thecameras; the wheel encoder and the RFID detector are used for measuring mileage; the industrial personal computer is used for acquiring and processing images and detecting whether the fasteners are abnormal by means of binocular vision stereo matching. The railway track fastener anomaly detection system based on binocular vision and laser speckle has the advantages that a laser speckle source isused to manually add speckle lines to the surface of fasteners, image block matching precision can be improved, three-dimensional shapes of the fasteners are accurately reconstructed, and various anomalies of different types of fasteners can be effectively detected.

The invention discloses a film magnetic characterization instrument under vacuum. The instrument includes an ultra-fast laser, beam splitters, a time delay line, reflectors, a polarization splitting prism, a frequency multiplier, two optical filters, at least one rectangular prism, an optical chopper, an optical focusing lens group, a multi-fiber sample rack, a hermetic vacuum cavity, a 1 / 2 slide, a beam splitter prism, a photodiode, a phase-locked amplifier, a magnet, a constant temperature apparatus, a translation stage, and an imaging apparatus. According to the invention, the instrument, by implementing in situ characterization in the preparation of films, increases measuring efficiency and precision. The instrument can achieve imaging effects by preparing a multi-fiber sample adjusting apparatus with as high as five fibers in combination with the translation stage for samples. Co-axial and vertical incidence of pump and detection beams simplifies light paths and reduces the difficulty in adjusting light paths. In addition, the instrument can enable samples to conduct magnetic characterization inside the vacuum cavity and prevents air or water vapor from polluting the samples.

The invention discloses a modular friction and wear testing machine and a testing method thereof, and the testing machine comprises a shell, a friction disc, a sample clamping device, a loading device, a pressure sensor, a wireless torque sensor and a stepping motor, wherein the left side of the shell is installed with the loading device, the inner end of the loading device is connected to the sample clamping device, the stepping motor is mounted on the left side of the shell, the motor shaft of the stepping motor is connected to a driving shaft through the wireless torque sensor, the drivingshaft is movably connected to a blind hole on the friction disc, the friction disc faces directly the sample clamping device, the pressure sensor is mounted on the inner end of the driving shaft and abuts in the blind hole, the end surface of the friction disc is mounted with a plurality of uniformly distributed projecting friction rods, the top, the bottom side and the bottom center of the shellare respectively provided with a top access hole, a side access hole and a residual liquid collecting hole, and a temperature sensor mounted on the sample is further provided. The modular friction andwear testing machine provided by the invention has the advantages of convenient operation, simple disassembly and assembly, stable load, diversified functions and modular design, is suitable for friction corrosion abrasion test under various conditions, and has wide application range.

The invention discloses an unbalance amount measuring device and a method thereof. A flat-plate-type vibrating piece is arranged in the extension part of a dynamic balance testing device, and the flat-plate-type vibrating piece only vibrates in two orthogonal directions of a plane in which the vibrating piece is arranged. Therefore, irregular tremor effects generated by driving wheels are shielded, and rotation amplitude generated by unbalance and vibration data formed due to the self-weight of a detected tire and a rotation shaft are intensively transmitted to a sensor group so as to improve the accuracy of detection data and further improve unbalance mass detection and rating dimension. The measuring device comprises the vibrating piece and the sensor group, wherein the vibrating piece is connected between a fixed seat and a shell of the rotation shaft. Two connecting ends of the vibrating piece are arrayed along the extension direction of the axial center line of the rotation shaft. The sensor group is at least provided with a horizontal sensor and a vertical sensor. The vertical sensor is arranged in parallel with the vibrating piece and the horizontal sensor is perpendicular to the plane in which the vibrating piece is arranged.

The invention discloses a chain saw and an electric tool. The chain saw includes a working part, a tool body, a brushless motor, a drive circuit, a controller and a motion detection device. The motiondetection device is connected with the tool body or the working part in a linkage mode for detecting the movement change of the tool body or the working part in at least one direction; and the controller is configured to control the drive circuit to enable the brushless motor to enter a braking process when the motion detection device detects that the change amount of movement of the tool body orthe working part in at least one direction exceeds a preset threshold value. The invention further provides a control method of the electric tool. The chain saw and the electric tool are simple in implementation method of recoil detection, simple in data processing, small in vibration interference and more accurate in detection; and meanwhile, quick braking can be realized faster, so that safetyaccidents caused by recoil can be effectively avoided.

The invention discloses a novel quakeproof chassis and particularly relates to the technical field of servers. A chip slot box (3) is hung at the internal top end of a server chassis shell (1) via flexible hanging steel ropes (2), safety air bags (4) are arranged on the outer sides of the chip slot box (3), the server chassis shell (1) is arranged at the upper end of a damping base (5), a fixing substrate (6) is arranged at the internal bottom end of the damping base (5), a plurality of elastic damping devices (7) are arranged on the fixing substrate (6), and the upper ends of the elastic damping devices (7) are connected with the bottom end of the server chassis shell (1). The novel quakeproof chassis is simple in structure, and by the aid of the elastic damping devices, shock interference between the server operations is reduced, and stability in operating of the server is guaranteed.

This invention relates to a kind of fission type dynamic automobile judge, the character is the invention includes two small weighing platform, and two small weighing platform disposal spacing fit for automotive wheel span. Each small weighing platform all composed by bearing plate, bearing rack, frame and weighting sensor group, each length all accord with wheel width when automobile drive past; the gap between small weighing platform frame and bearing plate has rubber plate for absorbing shock; below the small weighing platform's bearing rack there have three sensors, two of them sit in two adjacent angle of frame, one sit in another two angle's in-between position of frame, bearing rack via supporting stopcock be on sensor. This invention has low vibration strength, small vibration noise, high accuracy of weighting, and using less steel, reducing quantity of excavating installation work. Maintenance is convenience too.

The invention provides a combined permanent magnet eddy current speed governor which comprises a conductor rotor and a permanent magnet rotor, wherein the conductor rotor comprises a circumferential fixing sleeve, a first conductor supporting disk (1) and a second conductor supporting disk (15), wherein a first end face conductor (2) is arranged on the inner surface of the first conductor supporting disk (1), and a second end face conductor (14) is arranged on the inner surface of the second conductor supporting disk (15); a radial conductor is arranged on the inner surface of the circumferential fixing sleeve; the permanent magnet rotor comprises a first magnet mounting disk (4) and a second magnet mounting disk (12) which are parallel to each other; end face permanent magnets and radial permanent magnets are arranged on both the first magnet mounting disk (4) and the second magnet mounting disk (12). The combined permanent magnet eddy current speed governor combines a cylinder type structure with a disk type structure, the permanent magnets are simultaneously magnetized in the radial direction and the axial direction, and a copper conductor cuts magnetic lines of force in the radial direction and on the end face to increase electromagnetic damping. Output torque can be easily regulated by a regulating mechanism, and transmission power is greatly increased.

The invention provides a film-type two-way hydraulic vibration near-resonance type double-drum vibrating mill, comprising drums, film-type hydraulic vibration exciters, near-resonance spring groups, bases and hydraulic devices, wherein each film-type hydraulic vibration exciter comprises a film made of a flexible material, and two parallel rigid panel I and rigid panel II; the film is arranged between the rigid panel I and the rigid panel II; the film can form a closed space for containing a liquid independently or together with the rigid panel I or the rigid panel II; the liquid can pass in and out of the closed space through a channel; the closed space is communicated with a hydraulic source of which the flow direction periodically changes through the channel; the vibrating mill does not need a bearing; the hydraulic device does not need a piston; the exciting force can be completely balanced; the film-type two-way hydraulic vibration near-resonance type double-drum vibrating mill is simple to manufacture, convenient to repair, low in cost, high in vibration force, free of abrasion, free of leakage, free of heat dissipation, even in vibration force distribution, low in energy consumption, and small in external vibration interference; stepless frequency modulation and amplitude modulation can be achieved without shutdown; and the frequency modulation is uncorrelated to the amplitude modulation.

The invention disclose a medicine box labeling and conveying mechanism which comprises a conveying belt rail and guardrails, and further comprises guardrail adjustment brackets, a bottle feeding bracket, a bracket discharge bracket and a photoelectric bracket, wherein the guardrail adjustment bracket is arranged on the two sides of the conveying belt rail; the guardrails are fixed on the guardrail adjustment brackets and separately arranged along the direction of the conveying belt rail in parallel to form a transmission channel; the bottle feeding bracket and the bracket discharge bracket are sequentially mounted on the guardrails according to the conveying direction of the conveying belt rail; and the photoelectric bracket is mounted on the conveying belt rail between the bottle feeding bracket and the bracket discharge bracket. The mechanism has the advantages that the mechanism solves and overcomes the problem and the disadvantage in the conventional labeling equipment that the equipment is not convenient to maintain and the labeling is not stable; the working efficiency and the packing quality are improved; and the mechanism is simple in structure and convenient to operate, and has excellent practicability.

The invention provides a diagnosing experiment platform for a non-linear vibration fault of gears. The diagnosing experiment platform is applied to the technical field of gear vibration fault diagnosis. Two gears of a gear reducer in the experiment platform are connected with an input shaft and an output shaft respectively in a cantilever structural form. The input shaft and the output shaft are respectively fixed to a bearing seat through bearings with a certain distance. The output shaft is connected with a load servo motor through a belt, a vibration sensor is arranged on the bearing seat, the vibration sensor is in electrical connection with a signal amplifier, a signal amplified by the signal amplifier is transmitted to a signal processing computer through a data acquisition card, and parameter setting and state monitoring are conducted on a drive servo motor and the load servo motor through corresponding controllers and human-machine interfaces. The diagnosing experiment platform for the non-linear vibration fault of gears is small in vibration interference, the gears are convenient to disassemble, the gears can be accurately loaded through loading of the servo motor, vibration caused by mechanical loading and the beat vibration phenomenon of the gears in the time of no-load is avoided, and a structure is simple.

A transducer of measuring vibration is prepared as connecting permanent magnet with top cover and base; winding coil on coil skeleton being sheathed outside of permanent magnet; connecting coil skeleton top end with top cover through top cover spring and its bottom end with base through base spring; forming top cover, base, permanent magnet, coil skeleton, top cover spring and base spring to be an integral structure.

The invention belongs to the technical field of the multi-wire cutter main shaft loading test, and especially relates to a multi-wire cutter double-main shaft loading test stand. The multi-wire cutterdouble-main shaft loading test stand comprises a base, a motor mounting seat and a main shaft mounting seat; the motor mounting seat and the main shaft mounting seat are arranged on the base; a motoris arranged on the motor mounting seat; a driving shaft is arranged at 1 / 2 of the main shaft mounting seat, and a driven shaft is arranged on the other 1 / 2 of the main shaft mounting seat; a torque loading device is arranged between 1 / 2 of the driving shaft and the driven shaft, and a main roller is arranged between the other 1 / 2 of the driving shaft and the driven shaft; and a net tension loading device is arranged at one side of the main roller. The loading test is performed on the main shafts through the torque loading device and the net tension loading device, the operation performance ofthe main roller can be comprehensively reflected; various performance indexes of the main shafts can be reflected by arranging multiple sensors, and a computer is used for recoding and analyzing, a tested object can be comprehensively assessed, and the application field is wider.

The invention relates to an assembled cooling water pipe convenient for construction of a narrow bin surface and belongs to the technical field of concrete pouring construction. The assembled coolingwater pipe mainly consists of a three-branch pipe joint, a horizontal pipe, a vertical pipe and an interlayer connecting piece, and according to the principle that 'part of pre-distributed, multi-directional connection, connecting after pouring', the three-branch pipe joint is fixed at an appointed position of a foundation bin surface in advance, and concrete is poured after the vertical pipe is assembled, at this time, there is no obstruction in the horizontal direction, and after pouring, the upper layer horizontal pipe is connected to complete a cooling pipeline. And the top end joint of the cooling pipeline can be used as the basis of the next cooling pipeline for connection and circulation operation. According to the assembled cooling water pipe, the problems that the traditional cooling water pipe arrangement in the thin-wall concrete structure can only be bound by the steel bar net, the cooling effect is influenced by the fact that the path of one pipe is too long to be finished, the pouring quality is poor due to the fact that the vibration is not in place, and the like are solved; and the process is simple, the assembly is convenient, and the cooling effect is ensured.

The invention discloses a take-off and landing device of a rotor wing unmanned plane. The device comprises an outer cylinder, wherein the outer cylinder is movably connected with an inner cylinder through a first spring body in a sleeving mode, a support frame is connected to the bottom of the inner cylinder, a plurality of through holes are formed in the top of the outer cylinder in an annular configuration, first connecting rods are movably inserted in the through holes, a wind board is fixedly connected to the tops of the first connecting rods, first wedge shape parts are connected to the inner sides of the first connecting rods through first elastic expansion and contraction bodies, second wedge shape parts which are in selective contact with the first wedge shape parts are fixed to the outside of the inner cylinder, spacing boards which are in selective contact with the top of the inner cylinder are fixed to the inner sides of the first connecting rods, a second elastic expansion and contraction bodies are connected to the outer sides of the first connecting rods in a sleeving mode, and two ends of the second elastic expansion and contraction bodies are connected with the wind board and the outer cylinder respectively. The invention further discloses a take-off and landing method of the take-off and landing device of the rotor wing unmanned plane. According to the device, the shortage of the prior art can be improved, an oil liquid buffering structure is not used, and the self-weight of the rotor wing unmanned plane is further lowered.

The invention discloses a PCCP (prestressed concrete cylinder pipe) broken wire detection method and detection equipment, and the method comprises the following steps: fixing an exciter during each detection, symmetrically scanning a detector along the axial direction of a pipeline by taking the exciter as a center, and orthogonally placing the exciter and the detector; the method adopts an acquisition mode of forward scanning once and reverse scanning once, performs pipeline abnormity identification detection through acquisition of detection signals, and comprises the following steps: performing error analysis on acquired data and reference value data, performing error analysis on symmetry of the acquired data, and taking a mean value of two error analysis as a final error; and when the final error is greater than the threshold value, the broken wire exists. The equipment comprises a vehicle frame, wherein a module bracket is arranged on the vehicle frame; the module bracket is used for supporting and fixing the power module and the excitation module; the guide bearing is used for vertically sliding the excitation module; the pushing handle and the four groups of wheels are used for pushing the equipment to move in the pipeline; and a driving mechanism and a detection module are further arranged at the bottom of the frame.

The present invention relates to a novel motion ability measuring system releasing insects to upwardly creep from the bottom, motion ability of an insect individual or colony can be measured, and the insect motion ability measuring system can be used for scientific research or drug screening and the like. The principle of the system is that the insects are aggregated at the bottom of a container without external force, the insects are simultaneously released, and upward creeping of the insects is observed, and the motion ability is analyzed. Interference due to the fact that the insects are aggregated at the bottom in a traditional external force bump manner to start an experiment can be effectively prevented.

The invention relates to the technical field of pantograph-catenary detection, in particular to a non-contact detection system and method for overhead lines. The system comprises a car roof laser assembly which is used for being installed on a car roof, obtaining car roof detection data through measurement and transmitting the car roof detection data to a processor, wherein the car roof detection data comprises the height and the transverse offset of a contact net relative to the laser assembly; a vibration compensation assembly which is used for being installed at the vehicle bottom, obtaining vehicle bottom compensation data through measurement and transmitting the vehicle bottom compensation data to the processor, wherein the vehicle bottom compensation data comprises the position deviation of the vehicle body center and the track center and the height difference of the vehicle body and the track; a processor used for calculating geometric parameters of the contact network according to the vehicle roof detection data and the vehicle bottom compensation data; and a control host used for providing a synchronizing signal and a power supply for the car roof laser assembly, the vibration compensation assembly and the processor. According to the invention, the geometric parameters of the overhead line system can be dynamically detected in a non-contact manner, vibration interference is eliminated through vibration compensation, and the detection accuracy is improved.

The invention relates to a double-host distributed optical fiber type prestressed pipeline running safety prewarning system which comprises an indoor module and an outdoor module, wherein the outdoor module comprises a pipeline-end coupler, a leading-in-end coupler and a leading-out-end coupler; the leading-out-end coupler and the leading-in-end coupler which are matched with each other are arranged outside a butterfly valve of a prestressed pipeline respectively and connected through an optical fiber; the optical fiber distributed on the inner wall of the prestressed pipeline is guided to the outside of the prestressed pipeline through the leading-out-end coupler and guided to the inside of the prestressed pipeline through the leading-in-end coupler; the indoor module comprises two computers, two data acquisition cards, two photoelectric detectors, two semiconductor lasers and two indoor couplers. The system is simple in structure, scientific and reasonable in design, very high in monitoring sensitivity and positioning accuracy for steel wire breakage, easy to realize, reliable in running and more suitable for long-distance prestressed pipelines.

The invention belongs to the technical field of prefabricated assembly type buildings, and discloses a building civil engineering construction prefabricated assembly type structure which comprises a prefabricated assembly, and the prefabricated assembly comprises a prefabricated pile, prefabricated connecting bases fixed to the four sides of the prefabricated pile and prefabricated beams installed on the prefabricated connecting bases; and the limiting assembly comprises an inserting groove formed in the prefabricated connecting base, a first cavity groove, a first spring, limiting blocks symmetrically connected to the two ends of the first spring, limiting columns installed on the limiting blocks and limiting holes symmetrically formed in the two sides of the prefabricated connecting base. The end of the precast beam can be firmly locked in the precast connecting seat, so that the connecting strength between the precast beam and the precast pile is enhanced, loosening and cracking between the precast beam and the precast pile are prevented, the structural stability is greatly improved, and the precast beam connecting seat is convenient to assemble and good in using effect.

The invention relates to the technical field of a fan blade vibration quantity test device, in particular to a fan blade single side dynamic balancing machine. The fan blade single side dynamic balancing machine comprises an operation and control platform, wherein a laser is arranged at one side of the operation and control platform; a fan blade servo transmission mechanism is arranged beside the laser; the fan blade servo transmission mechanism comprises a machine frame and a base; a servo motor is arranged at the inner side of the machine frame; an output shaft of the servo motor passes through the machine frame to be connected with a rotating disc; a transmission assembly is arranged at one side of the machine frame; the rotating disc and the transmission assembly are in transmission connection through a first transmission belt; the base is provided with a jacking air cylinder; an output shaft of the jacking air cylinder is connected with a clamping jaw used for installing a fan blade; the transmission assembly is in transmission connection with the clamping jaw through a second transmission belt; the clamping jaw is arranged at an installing plate; an installing block is arranged under the installing plate; a support plate is connected between the installing plate and the installing block. The servo motor and the clamping jaw are matched for driving the fan blade to rotate; different work requirements are met; the fan blade detection precision and the fan blade detection efficiency are improved; the production quality of the fan blade is improved.

The invention discloses a control frame for laser marking and carving equipment. A support is included. Landing legs are arranged below the support. A vertical rod is fixedly connected to the surfaceof the support and connected with an installing disc through a height adjusting mechanism. The installing disc is provided with a sliding block through a drive mechanism. The sliding block is movablyprovided with two clamping plates. A laser module is clamped and connected in the two clamping plates. The two side walls of the clamping plates are provided with an air blowing pipe and an air suction pipe correspondingly. Lasers emitted by the laser module are used for carving and marking materials, the laser module is connected in the form of the clamping plates, replacement can be convenient and fast, the control frame can adapt to multiple types of laser modules, two pipelines are arranged on the two sides of the laser module, air blowing cleaning and tail gas collecting are conducted onthe material surface, hot melted or gasified substances can be prevented from being gathered on the surface of the carved position, and accordingly the laser acting effect is improved.

The invention discloses a device for detecting a telescope lens. The device comprises a workbench, an interferometer arranged in a casing of the workbench and a display arranged on a table top of the workbench. The casing of the workbench is also internally provided with a flat mirror and a flat mirror collimation adjusting mechanism. The flat mirror is positioned between the interferometer and the flat mirror collimation adjusting mechanism. The flat mirror is connected with one side of the flat mirror collimation adjusting mechanism in an inclined manner. The table top of the workbench is provided with a fixing plate I, an adjusting plate, a positioning column, extension springs and an image adjusting mechanism, wherein the image adjusting mechanism is used for adjusting directions and thicknesses of image lines. The fixing plate I is fixed on the table top. The adjusting plate is above the fixing plate I and is connected with the fixing plate I through the extension springs. The positioning column is shaped like an inverted T and is fixedly arranged above the adjusting plate. The image adjusting mechanism is arranged on the adjusting plate, and a lower end part of the image adjusting mechanism is movably connected with the fixing plate I. The device provided by the invention is simple in structure, small in size and convenient to operate.

The invention discloses a waterproof layer structure for a parking lot ground. The waterproof layer structure comprises a packed soil bottom layer, and a concrete base plate, a cement mortar screeding layer, an SBS modified asphalt waterproof sheet material, a cement mortar protection layer, a first reinforced concrete layer, a ceramsite concrete layer, a second reinforced concrete layer and a concrete surface layer are sequentially laid on the packed soil bottom layer from bottom to top. The waterproof layer structure for the parking lot ground solves the problem that an existing waterproof layer is likely to lose efficacy and leaks water, and achieves the purposes of improving the waterproof effect and prolonging the service life.

The embodiment of the invention provides a vehicle part damping method and device as well as a vehicle. The method comprises the following steps: acquiring a vibration signal by a vibration detectingpart; receiving the vibration signal and converting the vibration signal into a control signal capable of controlling an electromagnetic part by a control part; receiving the control signal by the electromagnetic part, and performing suspension control on the target part in the vehicle. The vehicle part damping method realizes suspending a target part in vehicle dynamic control according to the vibration signal, guarantees flexible fixation of the target part, reduces vibration interferences, and improves processing accuracy of the target part.

The invention discloses a multifunctional solid-phase low-temperature electrochemical nuclear magnetic resonance combination system experiment support frame. The frame comprises a main frame, a low-temperature vacuum supporting and shock absorbing frame module, a low-temperature tank positioning and protecting frame module, a displaying frame module and a low-temperature chamber lifting module, wherein the main frame comprises longitudinal stand columns, transverse support rods, layer rods and a grounded wire; the longitudinal stand columns are used for dividing the main frame into a left magnet area and a right low-temperature area; the layer rods are used for dividing the main frame into an upper layer and a lower layer; the low-temperature vacuum supporting and shock absorbing frame module comprises positioning rods and shock elimination sheets; the low-temperature tank positioning and protecting frame module comprises positioning transverse rods, positioning vertical rods and a longitudinal stand column of the main frame; the displaying frame module is located on the lower layer of the right side wall of the main frame; the low-temperature chamber lifting module comprises positioning vertical rods, positioning transverse rods, a clamping hoop lifting disc set, a pulley block and a hand cranking device. Through the adoption of a non-magnetic splicing material, all the function modules are spliced on the main frame; the function expandability of the frame is improved; the vibration interference of a vacuum pump is reduced; the speeds in processes of assembling and disassembling the low-temperature chamber can be effectively controlled.