246results about How to "Solve fatigue" patented technology

An endoscope apparatus is provided. An endoscope apparatus includes a slave device including a plurality of drive motors configured to adjust insertion and insertion direction of an insertion tube of an endoscope, and a plurality of load sensors provided on the plurality of drive motors; and a master device including displacement sensors configured to generate signals for driving the drive motors according to an operator manipulation, and resistive motors configured to operate based on loads detected by the load sensors. The drive motors produce drive forces according to the signals generated by the displacement sensors and the resistive motors produce resistive forces corresponding to the operator manipulation based on the loads detected by the load sensors.

The invention relates to a mobile phone software system, in particular to an eyesight protection system of smart mobile phones. The eyesight protection system comprises a system setting module, a screen state monitoring module, a continuous use time timing module, a rest time timing module and an eye protection module. The system setting module sets continuous use time and rest time as well as screen protection passwords, chooses the eye protection mode, etc. The screen state monitoring module monitors screen turn-on and turn-off acts of a mobile phone operation system. The continuous use time timing module conducts timing when a user continuously uses a mobile phone. The rest time timing module conducts timing in the eye protection period. The eye protection module protects the eyesight according to a selected eye protection mode when eyes rest. The eyesight protection system is simple, starts from helping the users to rest eye muscles, achieves scientific eye protection through ways of reminding the users to rest, pause staring at mobile phone screens, listening to music to relax and guiding the users to do eye exercises, effectively protects the eyesight, and prevents eye diseases.

The invention discloses a health care product with the function of reducing blood sugar. The health care product comprises L-arabinose, chromium-enriched yeast and any one or more of taurine, Chinese wolfberry extract, L-carnitine tartrate and bitter melon extract. The health care product has the functions of reducing the blood sugar and controlling blood fat simultaneously, has good taste, and is particularly suitable for patients with diabetes.

The invention provides a series-parallel-connection force-feedback remote-control manipulator, and relates to an operation manipulator to resolve the problems that a master manipulator of a master-slave remote-control operation robot only adopts a series-connection or parallel-connection structure, a series-connection master manipulator structure has no clamping freedom degree, an operator can not adapt, and the hands of the operator are tired after long-time operation, and a parallel-connection master manipulator structure is not flexible to move, small in work space, difficult to meet the requirements of flexible motion and large rotation angle of an enterocoelia operation instrument. The series-parallel-connection force-feedback remote-control manipulator comprises a series-connection mechanism, a parallel-connection mechanism and a clamping mechanism, wherein the series-connection mechanism comprises a first rotation arm, a second rotation arm, a first balancing weight, a second balancing weight, a first encoder, a second encoder, a third encoder and a force sensor, and the clamping mechanism comprises a clamping seat, a fourth encoder, a first servo motor, a speed reducer, a third balancing weight and a clamping device. The series-parallel-connection force-feedback remote-control manipulator is applied to the mini-invasive enterocoelia surgery.

The invention discloses a communication data link health state test device, system and method of an electric vehicle charging facility. The electric vehicle charging facility comprises a charging control unit and a charging pile main control plate, wherein the charging control unit is connected with and communicates with charging pile main control plate through a CAN bus. The test device comprisesa communication simulation and fault detection unit, a CAN transceiver, a human-machine interaction unit and a power supply. The test device is accessed to the CAN bus through the CAN transceiver. Auser sends a test command signal to the communication simulation and fault detection unit through the human-machine interaction module. The communication simulation and fault detection unit selects acharging control unit detection module or a charging pile main control plate detection module to execute corresponding tests according to the test command signal, thereby obtaining test result data offault states, fault types and fault positions of a CAN communication link. The communication simulation and fault detection unit of the test device transmits the test result data to the human-machineinteraction module for outputting. According to the invention, human resource cost of the link test can be reduced and test quality and efficiency are improved.

The disclosed electromagnetic relay is composed of magnetic circuit part static and moving springs and base, and middle mechanism. In magnetic circuit, winding and yoke are positioned on the base. Armature, static and moving springs are setup at the base. The static spring consists of static contact and riveted spring leaves. Moving contact for forming circuital channel is riveted on head part of the moving spring leaves including two pieces of spring leaves riveted. Rivets form bulge structure of positioning springs. The said middle mechanism is composed of promoting block and spring. One end of the spring is installed on bulge structure in window of upper part of the promoting block, and the other end of the spring is installed on bulge structure on combined head of the moving spring. Overtravel of contact is generated by compression deformation of spring, and not generated from deformation of moving spring directly so as to solve problem of high cyclic fatigue of moving spring.

The invention discloses a composite bridge deck applied to long-span bridges and city bridges. The composite bridge deck comprises a bridge deck body, wherein the bridge deck body is formed through combining a lower wave-shaped steel plate and an upper concrete slab; shear connectors which are symmetrically welded to wave crests of the wave-shaped steel plate upwards extend into the concrete slab; reinforcing steel bars and annular hoop reinforcements which are used for bundling up the reinforcing steel bars are arranged at the middle part of the concrete slab in a balanced manner. According to the composite bridge deck, the characteristics of the wave-shaped steel plate and the characteristics of the concrete slab are combined together, properties of materials are fully utilized, the flexural bearing capacity is enough under heavy loads, the deformation is small enough under the action of concentrated loads, and too-large secondary stress resulting from weld seams can be avoided; a top plate of a steel bridge deck is replaced with the concrete slab, so that the construction cost of a bridge floor system can be reduced; the quantity of welding is very small, so that the damage to the bridge deck caused by defects of a welding process can be reduced; due to the wrinkling effect of the wave-shaped steel plate, the problem that the deformation of the steel plate and the deformation of concrete are non-synchronous can be greatly solved, and the cracking of the transverse bridge direction of the bridge deck is avoided.

The invention relates to a brain-computer interface, an artificial intelligence and an algorithm for pattern recognition, and more particularly, to an SSVEP EEG classification method based on a convolution neural model enhanced by EMD data, which can be applied to the fields of medical instruments, human-computer interaction, robot control and the like. At first, that method preprocess the original EEG data, After preprocessing, the EEG data are decomposed by using the empirical mode decomposition method, and a large amount of artificial EEG data are generated by mixing, which accord with thetime-frequency domain characteristics of the original EEG signal. The artificial EEG data and the original EEG data are combined and used for the parameter training of the neural network, so as to achieve the effect of using a small amount of EEG data to effectively train the network parameters. Finally, the complex Morlet wavelet transform is used to generate EEG tensor, and the original time-domain data is converted into aggregate time-domain data. The tensor dictionary of frequency-domain and spatial information is used as the input of neural network, and the EEG training set is classifiedby convolution neural network model.

The invention discloses a notification message prompting method and a notification message prompting apparatus and a mobile terminal. The method comprises the following steps: monitoring, by a mobile terminal, a notification message, and finding an application program matched with the notification message according to the notification message; extracting message characteristic information from the notification message according to a preset rule, and inquiring a graphic corner mark corresponding to the message characteristic information from a pre-established corner mark database according to the message characteristic information; and displaying the graphic corner mark on an application program icon. By virtue of the technical means for displaying the corner mark on the application program icon, prompting or hinge for a user is realized, the problem of information fatigue caused by a digital corner mark is overcome, and the richness for reminding or prompting information is improved compared with the single digital display of the digital corner mark.

The invention discloses an inter-frame difference-based violent behavior detection method, system and device, and a medium, and the method comprises the steps: inputting all frame images of a to-be-detected video into a first convolutional neural network, and outputting the appearance features of each frame image; processing the to-be-detected video by using an inter-frame difference method, and extracting a plurality of difference frame images; inputting each differential frame image into a second convolutional neural network, and outputting an action feature of each differential frame image;inputting the appearance features of each frame of image into a first classifier, and outputting a first classification label of the current frame of image; inputting the action feature of each differential frame image into a second classifier, and outputting a second classification label of the current differential frame image; fusing the first classification label and the second classificationlabel, and outputting a violent behavior detection result of the current frame image; and when the frame number of the violent behavior image exceeds a set threshold, considering that the violent behavior exists in the to-be-detected video.

The invention relates to the technical field of customs clearance security inspection, and is a self-service double-gate customs clearance security inspection device and a customs clearance security inspection method therefor. The former comprises a control unit, a first gate machine, and a second gate machine. The first gate comprises a first gate machine portion and a first gate located behind the first gate machine portion, wherein a first protective baffle is disposed between the first gate machine portion and the first gate, and a forward intrusion detection unit is mounted on the inner side wall of the first protective baffle. The second gate machine comprises a second gate machine portion and a second gate, wherein second protective baffles are disposed between the second gate machine portion and the first gate, and between the second gate machine portion and the second gate, and a second information collecting unit is mounted on the gate machine portion, and a trailing detecting unit is mounted on the inner side wall of the second protective baffles. According to the self-service double-gate customs clearance security inspection device and the customs clearance security inspection method therefor, the problems of low efficiency and easy to cause false detection in the existing manual security inspection mode can be solved, which can effectively identify passengers and baggage, effectively reduce the false detection rate of the trailing detection, improve the efficiency of passing, identify the control personnel at the same time , and help eliminate security risks.

The invention discloses a light-weight magnesium alloy passenger vehicle body framework which comprises a vehicle body framework body, a vehicle head framework installed at the front end of the vehicle body framework body, a vehicle tail framework installed at the rear end of the vehicle body framework body and multiple connecting mechanisms. Each of the vehicle head framework, the vehicle body framework body and the vehicle tail framework is composed of multiple magnesium alloy section bars in a connected mode, and every two magnesium alloy section bars are buckled and connected into a wholethrough the corresponding connecting mechanism. The potential quality hazards of welded metal fatigue and stress concentration are effectively overcome, the technical problem that a magnesium alloy ispoor in welding performance and the problem that magnesium alloy frameworks are high in riveting cost are solved as well, and connection of the magnesium alloy frameworks of a whole vehicle is reliable.

The invention discloses a personal authentication credential management method and system based on a mobile terminal. The personal authentication credential management method based on the mobile terminal comprises the steps that a user registers an authentication credential on the mobile terminal to carry out network application login; the login network application and the authentication credential of the user are recorded and stored, the user authentication credential is encrypted, the user authentication credential is periodically modified, and meanwhile, a verification identification token is allocated to the user; when the user logs in the network application, the user identity state is verified by the verification identification token; and when the existing user identity state of the user has no permission of logging in the network application, the verification identification token is taken back, and isolated locking or destroy processing is carried out on the data information of a user account. The invention further discloses a personal authentication credential management system based on the mobile terminal, which can realize a centralized management mode of personal passwords, solve the problem of user password fatigue and ensure the security of corporate confidential data in the mobile terminal.

The invention discloses intelligent glasses based on augmented reality and a screen adjustment device and relates to the technical field of intelligent wearing equipment. The intelligent glasses based on augmented reality comprise a host shell and an imaging shell. The screen adjustment device comprises a first connecting piece and a rotating shaft, a body of the first connecting piece is disposed in the host shell, a first end of the first connecting piece is a first convex lug which extends from the host shell into the rear end of the imaging shell, the first convex lug is provided with a round hole, a middle cylindrical portion of the rotating shaft is disposed in the round hole in the first convex lug and is in clearance fit with the cylindrical surface of the round hole, and the front end of the host shell is in arc clearance fit with the rear end of the imaging shell. The intelligent glasses based on the augmented reality and the screen adjustment device have the advantages that an imaging screen body can be adjusted both bilaterally and vertically, so that the problem of eye fatigue caused by the fact that a user is bound to move eyeballs to adapt to screen positions is solved; the imaging screen body can be moved conveniently when the user needs to view external real scenes.

The invention discloses a compound gingko health product solid preparation which is prepared by mixing ginkgo leaf extract, salvia miltiorrhiza bunge, American ginseng, seabuckthorn flavone and gelatin or an enteric substrate. The compound gingko health product solid preparation comprises the following effective components in parts by weight: 1-60 parts of ginkgo leaf extract, 1-60 parts of salvia miltiorrhiza bunge, 1-30 parts of American ginseng and 0.5-20 parts of seabuckthorn flavone. The gingko, the salvia miltiorrhiza bunge, the American ginseng and the seabuckthorn flavone are comprehensively mixed to achieve the effects of convenient use and comprehensive nourishing. The health product of the compound gingko health product solid preparation has values as both food and medicine and can be used by a patient with a cerebral-vascular disease and a patient with higher blood fat and used for resisting cancer, resisting fatigue, resisting anoxia, resisting radiation, resisting aging, strengthening immunity, and the like by a healthy person. The compound gingko health product solid preparation mainly has two formulations of pills and soft capsules, is convenient for use, is beneficial to absorption and meets the requirement on health by wide consumers.

The invention discloses a whole-span prefabricated H-steel-concrete composite beam bridge and a construction method. The whole-span prefabricated H-steel-concrete composite beam bridge comprises an H-steel combination and a concrete bridge plate which is poured on the H-steel combination; the H-steel combination comprises H-steels placed in parallel in the bridge width direction; and the whole-span length is the length direction of the H-steels. The whole-span prefabricated H-steel-concrete composite beam bridge has the advantages that the construction of a bridge deck slab is simple and the hoisting weight of the bridge deck slab is light; during making, factory machining and manufacturing procedure does not exist and the later mounting and erecting difficulty is reduced; and meanwhile, as the H-steels can avoid adverse effects such as welding residual stress, more stable mechanical property, better bearing capacity and better durability are obtained; and the making cost can be greatly reduced. Compared with the steel plate girder in the prior art, the whole-span prefabricated H-steel-concrete composite beam bridge has the advantages that the welding or bolting process can be eliminated; construction processes uneasy to control, such as prestressed structure steel strand tensioning and grouting, hollow slab girder hinge joint connection and so on do not exist; the quality of aprofiled-steel composite beam can be effectively guaranteed; and requirements on equipment and technical skills of workers can be reduced.

The invention discloses an implementation method of a laser projection keyboard. The method is characterized by including: detecting light reflecting signals generated when fingers tap a projected virtual keyboard area; judging whether the lasting time of the light reflecting signals is in a preset value range or not; if so, identifying the position information of positions tapped by the fingers according to the light reflecting signals so as to identify corresponding input. In addition, the invention further discloses the laser projection keyboard. By the implementation method and the laser projection keyboard, when the fingers are placed on the key area of the keyboard for a rest when keyboard input is not performed, mistaken identification of the laser keyboard is avoided, and the situation that other areas cannot be used to perform input is avoided.

The invention relates to the field of traditional Chinese medicine, in particular to a traditional Chinese medicine composition mainly used for strengthening yang and tonifying kidney and a preparation method thereof. The traditional Chinese medicine composition is mainly prepared from an oyster extracting solution, a sea cucumber extracting solution, a dendrobium officinale extracting solution, xylitol and microcrystalline cellulose. The traditional Chinese medicine composition can be used for being made into various dosage forms, such as oral liquid, tablets, capsules, pills, granules, powder, medicinal liquor and paste. The traditional Chinese medicine composition and the preparation method thereof have the advantages that a remarkable effect is achieved on the aspect of improvement of the sexual function, experimental results show that sexual vitality of mice taking the composition is improved remarkably, the content of serum testosterone of normal mice and emasculated mice taking the composition is increased obviously, and it is thus clear that the traditional Chinese medicine composition can remarkably improve sexuality. The traditional Chinese medicine composition is a pure natural traditional Chinese medicine preparation, the untoward effect and side effect caused by irritation of the stomach and intestines can be reduced, the effectiveness is achieved fast, and the composition can be made into various dosage forms for a user to take.

The invention discloses a vertical conveyor comprising a frame body. A driving sprocket set and a driven sprocket set are disposed on the frame body. A transmission chain set is disposed between the driving sprocket set and the driven sprocket set. The transmission chain set is composed of transmission chains; each adjacent two of the transmission chains form a circulating conveyor chain set which a bracket is hinged to, a telescopic support is disposed on one side of the bracket, when the telescopic support is retracted, the bracket, the telescopic support and the circulating conveyor chain set form a triangular support platform, and when the telescopic support is extended, the bracket naturally droops. The vertical conveyor is capable of conveying cargoes continuously and vertically in two directions in a narrow cargo hatch and is high in conveying efficiency; the defects such that existing manual conveying causes low efficiency, ease of fatigue and high labor cost are overcome; conveying operation can be fast, efficient and safe.

A method of manufacturing a sheet by disposing a pair of working rolls (11, 12) of different diameters between upper and lower reinforcement rolls (13, 14) and driving only the large diameter work roll (12) of these working rolls so as to roll a plate material (x), comprising the steps of disposing only a small diameter working roll (11) of the pair of working rolls is disposed so that the rotating axis thereof is positioned over a mill center or on the downstream side of the mill center in the rolling direction and disposing the large diameter working roll (12) so that the rotating axis thereof is positioned on the downstream side of the rotating axis of the small diameter working roll (11) in the rolling direction before the plate material is rolled, whereby the dynamic burden of the working rolls can be reduced even when a rolling load is increased due to an increase in rolling width.

The invention relates to a vertical double-electric-torque wrench which is applied to dismounting and mounting a connection bolt of a steel rail of a railway. The vertical double-electric-torque wrench comprises a shell, a power output assembly and a sleeve, wherein the power output assembly is arranged in the shell and comprises at least one battery and a motor, the battery and the motor are connected, an output shaft of the lower end of the motor is in transmission connection with the sleeve, a vertical rod is fixedly arranged at the upper end of the shell, an axial line of the vertical rod is superposed with an axial line of the output shaft of the motor, and the upper end of the vertical rod is provided with a vertical operation handle. The vertical double-electric-torque wrench disclosed by the invention is provided with the vertical rod, and an operator does not need to squat and stoop to dismounting and mounting the bolts arranged on a sleeper of the steel rail, so that the labor intensity of the operator can be reduced, and the problem of the operator is easy to tired is solved.

The laser micro function digital microscope device includes pedestal, cantilever connected integrally with the pedestal, object stage on the cantilever, laser focusing mechanism on the cantilever, laser set on one side of the laser focusing mechanism, digital image acquisition mechanism set on the laser focusing mechanism, and lighting and reading mechanism set on the pedestal and cantilever. The laser micro function digital microscope device is superior to common optical microscope likely leading fatigue of human eyes, and can act directly on the observed microscopic matter and produce digital document of the observed process. The present invention has wide application in biomedicine and other fields.

The invention discloses a full-prefabricated assembly type concrete freight transport suspension type monorail structure. The structure comprises multiple prefabricated concrete track beams, the two ends of each prefabricated concrete track beam are connected with prefabricated concrete crossbeams, prefabricated hollow concrete piers are arranged at the two ends of each prefabricated concrete crossbeam, the bottoms of the two prefabricated hollow concrete piers corresponding to each prefabricated concrete crossbeam are installed on a prefabricated raft foundation, and each prefabricated raft foundation is fixed to the ground, wherein the length of each prefabricated concrete track beam is smaller than or equal to 10 m. Each component is a prefabricated member, quick assembly type construction is facilitated, the construction schedule is quickened, and construction cost is greatly saved; each component is prefabricated through reinforced concrete, the quality is reliable, the construction speed is high, maintenance cost in the later stage is low, construction cost is low, the structure is more environment-friendly, and traveling safety is facilitated; and the prefabricated raft foundations are adopted, the construction speed can be increased, soil texture exploration conducted in the earlier stage is not needed, and the earlier stage engineering cost is reduced.

The invention relates to a high-speed railway bridge wind blocking structure. An existing common-speed railway bridge wind prevention measure cannot meet the wind prevention requirement of a strong wind area high-speed railway bridge. The high-speed railway bridge wind blocking structure comprises vertical columns, a bent vertical column and a wind blocking plate, the vertical columns and the bent vertical column are vertically and fixedly spliced, the upper portion of the bent vertical column is vertical, the lower portion of the bent vertical column is bent towards a central line of a bridge body, the vertical portion of the upper portion of the bent vertical column is fixed at a flange of the bridge body, the bottom end is fixed to a box beam web or T-shaped beam horseshoe, the wind blocking plate is fixed between the longitudinally adjacent vertical columns, and a wind blocking plate hole is formed in the wind blocking plate. Safety of a bridge structure and the wind blocking structure is met, cross air acting on a train body is changed by the wind blocking structure, the critical wind speed of train safety operation is improved, train operation stability is improved, and operation faults are decreased.

The invention discloses a neurosurgical ultrasonic focusing-assisted three-stage atomization cooling and postoperative wound film forming device, which solves the problem that the skull base tumor removal device in the prior art cannot cool the grinding area and timely coat the wound It has the beneficial effect of timely coating. The scheme is as follows: a device for neurosurgical ultrasonic focusing-assisted three-stage atomization cooling and postoperative wound film formation, a transducer shell, and a variable amplitude set inside the transducer shell At least two layers of piezoelectric ceramic sheets II are arranged on the top of the horn II, and an electrode sheet connected to the ultrasonic generator is arranged between two adjacent layers of piezoelectric ceramic sheets II. The bottom of the transducer shell has a hemispherical structure. The inner side of the spherical structure is provided with a plurality of piezoelectric elements connected to the ultrasonic generator; the nozzle is located at the bottom of the horn II, the nozzle is connected to the medical nanofluid storage cup, and compressed gas can also be passed into the nozzle, and the nozzle Electrodes are also provided inside.

The invention discloses a friction-type stud shearing-force connection part and a construction method thereof. The friction-type stud shearing-force connection part includes a stud shearing-force connection part main body, a mounting nut, a sleeve, a fixing nut and a semiconductor spring; the stud shearing-force connection part main body comprises a thread section, a thread-free extrusion sectionand a pulling-resistant pier in sequence from bottom to top; during factory prefabrication, the stud shearing-force connection part main body is sleeved with the fixing nut, the sleeve and the semiconductor spring from the thread section in sequence, the upper end face of the fixing nut is located at the top of the thread section and is fixed, the upper end of the sleeve is fixed to the lower endface of the fixing nut, the upper end of the semiconductor spring and the lower end of the sleeve are connected into one, and the shearing-force connection parts are mounted on a maim beam at intervals according to needed shearing resistant requirements. By the adoption of the friction-type stud shearing-force connection part and the construction method thereof, force transferring modes of traditional shearing force connection parts are improved, interface friction is reasonably utilized, the pretension force of the friction-type stud shearing-force connection part can be monitored and controlled, and the design philosophy of combining resistance and releasement can be achieved. The factory prefabrication degree is high, bolt splicing is conducted on the spot, and the labor cost is saved.

The invention discloses an electric three-wheeled luggage barrow suitable for an airport. The electric three-wheeled luggage barrow is mainly characterized in that the lower ends of a front suspension and a rear suspension of the tail end of the left portion of a frame are provided with a front second bearing pedestal and a rear second bearing pedestal respectively, the outer portion of the front end face of the front second bearing pedestal and the outer portion of the rear end face of the rear second bearing pedestal are provided with a front rubber rear wheel and a rear rubber rear wheel respectively, the rubber rear wheels are driven by a DC motor through chain transmission, a front wheel component is arranged on the lower end face of a front wheel stand of the tail end of the right portion of the frame, a front wheel is arranged at the lower end of the front wheel component, a small journal of a front half shaft provided with the front rubber rear wheel and a small journal of a rear half shaft provided with the rear rubber rear wheel are connected with an active rotor of a front magnetic power brake and an active rotor of a rear magnetic powder brake through couplings and flat keys respectively, an advancing / retreating switch and a start switch are arranged on the upper end face of a front armrest arm, and a brake switch is arranged on the upper end face of a rear armrest arm. The problem that a passenger feels tired when pushing the luggage barrow to find an unoccupied seat in a waiting hall of the airport to wait for an airplane or pushing the luggage barrow to walk from a gate of the waiting hall of the airport to a security check is solved, and the passenger can conveniently and easily wait for the airplane or board the airplane.

The invention relates to the field of household products, and particularly relates to a combined type table and chair. The combined type table and chair comprises a chair seat, a chair back and a table top, wherein each of the chair back and the chair seat is in a flat-plate structure; one side part of the chair back is articulated with one side part of the chair seat; the chair back is connected with a first supporting part used for fixing the chair back; and the table top is positioned above the chair seat, and the table top is connected with the chair seat through a first connecting part. When the combined type table and chair disclosed by the invention is in use, the chair seat is placed on a bed, then the chair back is opened and supported on a bed surface through the first supporting part, then the table top is connected to the chair seat through the first connecting part, and then the combined type table and chair can be used; and therefore, the problem that fatigue can be caused when a person leans against a bed head for a long time can be solved.

The invention discloses a hand-held neurosurgical rotary ultrasonic resonance water-harvesting grinding device. The problems that a skull base tumor removal device in the prior art is large in size and difficult to operate are solved. The device has the advantages of high grinding efficiency and good cooling effect. According to the technical scheme, the hand-held neurosurgical rotary ultrasonic resonance water-harvesting device includes a main shaft and a water-harvesting grinding tool for grinding biological bones. The main shaft is disposed in an electric spindle housing, a rotor winding iscircumferentially arranged on the outer surface of the main shaft, a stator winding corresponding to the rotor winding is disposed in the electric spindle housing, and the electronic windings can beenergized to drive the rotation of the main shaft. The main shaft is connected to the water-harvesting grinding tool through an ultrasonic vibration mechanism, and driven by the main shaft and the ultrasonic vibration mechanism, the water-harvesting grinding tool realizes longitudinal vibration and rotary motion, and micro-convex bodies are arranged on the surface of the water-harvesting grindingtool.

A semisubmersible floating platform (1) for supporting at least one wind turbine, comprising four buoyant columns (3), each of them being attached to a ring pontoon (2); a transition piece (4) configured to support one wind turbine, disposed on the buoyant columns (3); and a heave plate (5) assembled to the internal perimeter of the ring pontoon (2). The ring pontoon (2) comprises four pontoon portions forming a quadrilateral-shaped ring pontoon (2) wherein the first end of each column (3) is attached to a respective corner of said quadrilateral-shaped ring pontoon (2). The heave plate (5) islocated in the internal perimeter of the ring pontoon (2), both defining a hollow. The pontoon (2) is preferably divided into a plurality of compartments or construction blocks that may be filled withfixed ballast, such as concrete. The transition piece (4) has four arms arranged in star configuration and protruding from a central point at which the wind turbine is located, the connection betweenthe transition piece (4) and the columns (3) being designed to be located above the sea splash zone. Each of the buoyant columns (3) comprises at least one ballast tank configured for allocating seawater in order to adjust the draft and to compensate for the inclination of the platform (1), said at least one ballast tank comprised in each column (3) being independent of the at least one ballasttank of the other columns (3).