91results about How to "Low motion noise" patented technology

The invention relates to an electrically-driven small bionic four-leg robot. The electrically-driven small bionic four-leg robot is a twelve-degree-of-freedom pure electrically-driven small mammalian bionic four-leg robot. The robot is of a four-leg robot mechanism structure designed based on the bionic structure and the motion feature of a four-leg mammal. The electrically-driven small bionic four-leg robot comprises a mechanical system and a power and motion control system. The simplified mechanical structure and a highly-integrated small real-time motion control system are adopted in the electrically-driven small bionic four-leg robot. Each leg of the robot is provided with three low damping moment control joints directly driven by a permanent-magnet synchronous motor (PMSM), each leg is provided with a spring energy storage mechanism, and therefore the four-leg robot has the higher energy using efficiency. Multiple motion gaits such as creeping, walking, trotting and running can be achieved through the electrically-driven small bionic four-leg robot, and the electrically-driven small bionic four-leg robot has the advantages of being simple in mechanical structure, ultra-low in noise, and low in cost, achieving dynamic self-balancing and the like.

A low-noise humanoid robotic head system, which can effectively mimic motion of human head, is presented in this invention. The system is a four-degrees-of-freedom (DOF) head that has a 3DOF neck and 1DOF lip. Because the involved mechanical components are limited to cables, cable housings, shaft, fixed pulleys, ball bearing, compression springs, rods, and static base plate, the measured a-weighted noise level of the robotic head system is no more than 30 dB.

The invention relates to a door open / close structure of a floor type air conditioner, which comprises an air outlet frame assembly and a door plate, wherein an air outlet is arranged on an air outlet frame assembly, and the door plate is located at the front side of the air outlet frame assembly and shields the air outlet; and a transmission mechanism that drives the door plate to open or close and a drive mechanism connected with the transmission mechanism are arranged on the air outlet frame assembly. The drive mechanism comprises a motor. The transmission mechanism comprises a gear, a rack and a reversing block, wherein the gear is installed on an output shaft of the motor, the rack is engaged with the gear and the reversing block is connected with the rack, the air outlet frame assembly is provided with a transverse groove, the reversing block is provided with an oblique guide groove, positioning columns are arranged inside the door plate, and the positioning columns pass through the transverse guide groove and the oblique guide groove orderly. The two positioning columns are respectively arranged at the upper and lower parts of the door plate. The door open / close structure of the invention has the characteristics of simple and reasonable structure, flexible operation, stable movement, reliable performance, low manufacturing cost, long service life, and wide application range.

The invention relates to a full-automatic visual spot-welding robot which comprises a bottom plate mechanism, as well as a visual identification system, an automatic spot-welding system, a motion platform system and an industrial personal computer (IPC) which are arranged on the bottom plate mechanism, wherein the visual identification system comprises an industrial camera, a light source and a light source controller; the industrial camera and the light source are connected with the bottom plate mechanism by virtue of a lifting table, and the light source is positioned under the industrial camera; the automatic spot-welding system comprises a micro-spot-welding mechanism and a micro-spot-welding controller; the micro-spot-welding mechanism is connected with the bottom plate mechanism by virtue of a lifting mechanism; the motion platform system comprises an X-axis module and a Y-axis module; the Y-axis module is slidably connected to the X-axis module; and the motion platform system is positioned below the visual identification system and the micro-spot-welding mechanism. The robot capable of realizing a full-automatic spot-welding function has the functions of automatically locating the spot-welding position of a workpiece in a visual way, guaranteeing the precise translational motion of the workpiece, welding in an automatic micro-spot-welding way, and the like.

The invention relates to a linear motor module for robot splicing. The linear motor module comprises a rotor assembly, a stator assembly, a brake and a controller, wherein the brake is connected to the rotor assembly, the rotor assembly sleeves the stator assembly, connection holes are formed in both of the rotor assembly and the stator assembly, the rotor assembly comprises a shell, a coil, a connector, a grating reading head, a first limit switch and a second limit switch, the stator assembly comprises a stator body, a permanent magnet and a grating, the brake comprises a wedge-shaped block,a braking spring, a piston, a braking block and an extrusion spring, and the grating reading head, the first limit switch, the second limit switch and the piston all are electrically connected with the controller.

The invention discloses a PPG-based non-contact non-invasive heart rate and respiration measuring method. The method comprises the following steps: step 1, image acquisition; step 2, region of interest ROI acquisition; step 3, ICA and consistency analysis; step 4, change signal acquisition; step 5, Gaussian filtering processing and multi-scale analysis; and step 6, fast Fourier transform. According to the method, a novel time domain heart rate and respiratory value signal extraction scheme based on a histogram statistics thought is used, noise information contained in obtained time domain signals is reduced, and the accuracy of heart rate detection is enhanced; a Gaussian filtering denoising method is innovatively used, so that the robustness of the system is greatly improved; Overlays isconstructed for an algorithm with a large calculation amount, and hardware acceleration is carried out at a PL end; and the PS end utilizes a time overlapping method to improve algorithm parallelism,realizes portability of hardware of the low-performance FPGA, and meets the requirements of real-time heart rate and respiratory value calculation on high frame number of a video.

The invention discloses a variable timing system oil-way of a minicar engine cylinder body assembly, comprising a VVT oil-way and a hydraulic tensioner oil-way. The VVT oil-way comprises a VVT oil-way placed in the main body of the cylinder body, a VVT oil-way placed in the main body of a cylinder cover and a VVT oil-way located in a first camshaft bearing cover; the pressure oil and the lubricating oil supplied to the VVT enter the main body of the cylinder cover through the main body of the cylinder body through the Q point and are divided into two paths through the B point; after the B-C oil-way driving the VVT passes an oil pressure control valve, the B-C oil-way is divided into a VVT advance angle control oil-way and a VVT lag angle control oil-way, the pressure oil of the two oil-ways respectively enters the lag angle control oil-way and the advance angle control oil-way in the first camshaft bearing cover matched with the main body of the cylinder cover to control a VVT regulating gas inlet phase. The variable timing system oil-way has reliable sealing, the pressure oil leakage and mixing phenomenon does not occur; and the distance between the supplementation oil-way of the hydraulic tensioner and the main oil-way is relatively short, the hydraulic tensioner can supplement the lubricating oil in time, and the motion noise of the chains is greatly reduced.

The invention provides a linear type intersected belt type sorting machine. The linear type intersected belt type sorting machine comprises a sorting machine frame, sorting road junctions and a machine body running on guide tracks, wherein the two parallel guide tracks are mounted on two inner sides of the sorting machine frame; the machine body comprises chain plate shells, a miniature electric drum, a common drum, a supporting plate, tensioning bolts, lateral wheels, supporting wheels and a belt driven by the miniature electric drum; the miniature electric drum is mounted on the chain plate shell at one end of the machine body; the common drum is mounted on the chain plate shell at the other end of the machine body; the lateral wheels and the supporting wheels are mounted on the outer sides of the chain plate shells; the supporting wheels roll on the guide tracks; and two ends of the supporting plate are respectively connected with the chain plate shells by bolts. Parcel loading amount of the unit length of the sorting machine can be increased, the components cannot be worn easily, noises are small, the structure is simple, the sorting machine is convenient to repair, the frame is short, and the turning radius in a vertical plane is small.

The invention discloses a manufacturing process of an automotive light gear. The manufacturing process of the automotive light gear comprises the following steps of first, carrying out rough machiningon a gear raw material to obtain a gear blank with a central large hole; second, carrying out heat treatment on the gear blank; third, carrying out semifinishing on the gear blank to obtain a semi-finished product of gear with teeth; fourth, carrying out plasma surface hardening carbonitriding treatment and sulfurizing treatment on the semi-finished product of gear; and fifth, carrying out secondary finish machining on the semi-finished product of gear to obtain a finished product of gear. According to the manufacturing process of the automotive light gear, because of the tooth surface hardening carbonitriding treatment and sulfurizing treatment, the hardening time is shortened, energy consumption is reduced, the surface friction coefficient is decreased, and the surface abrasive resistance is improved.

The invention belongs to the technical field of an operation platform and relates to a large-moment direct-drive plane rotary platform device. A base, a core shaft, a coil winding, a hydraulic cylinder, a hydraulic seat, a reading head seat and a reading head are fixed through bolts to integrally form a stator; a rotor is formed by a tabletop, a hydraulic sheet, a magnet yoke and a magnetic railing ruler; the stator is coupled with the rotor through a bearing and is fixed in an inner ring of the bearing by a bolt; the rotor is fixed on an outer ring of the bearing by a bolt; glue is filled into the coiling winding to be encapsulated, and magnetic steel is stuck on the magnet yoke by glue; stamp gum is coated on the back face of the magnetic railing ruler, and magnetic railing rule is directly adhered to the tabletop; the hydraulic cylinder and the hydraulic seat are sequentially fixed on the base; the hydraulic sheet is fixed between the hydraulic seat and a pressing head of the hydraulic cylinder of the tabletop; the reading head and the reading head seat are sequentially fixed on the base; the coil winding is uniformly wound and fixed on the core shaft; and the magnetic railing ruler is fixed on the side face of the tabletop. The large-moment direct-drive plane rotary platform device disclosed by the invention has the advantages of simple structure, easiness in control, large moment, stability in rotation, high positioning precision, long service life and friendly working environment.

A selective counterweight for sports apparatus is composed of a plastic casing with filling hole and its plug, intalling hole, locating hole, reinforcing ribs, and locating boss and recess, and the filler which is the mixture of water, cement and sand or steel sand and can be filled in said plastic casing via said filling hole.

The invention discloses a snakelike robot with a boosting device. The snakelike robot comprises a head module, a plurality of joint modules and a tail module which are connected in series. The head module is fixedly connected with the first joint module; the adjacent joint modules are rotatably connected through rotatory connection structures, and the last joint module and the tail module are rotatably connected through a rotatory connection structure; each module is internally provided with an MCU controller; the MCU controller of the head module sends a control command to the MCU controllerof each joint module and the MCU controller of the tail module after receiving the control command; the tail module is provided with a propeller, and the propeller is connected with the MCU controllerof the tail module. The snakelike robot has the advantages that on the basis that the snakelike robot can complete bionic movement and has a wriggling ability, the propeller is added to the tail of the robot, so that the snakelike robot can have a moving ability when being incapable of wriggling, and the moving speed can be increased when the snakelike robot swims in a bionic way.

The invention discloses a gearing device of a hanging digital-radiography system, which comprises a cable-wire turnplate shaft, a motor, a worm gear reduction box and a primary synchronous belt, and a transition shaft and a secondary synchronous belt as well, wherein, the shaft of the motor is connected with the worm gear reduction box, the primary synchronous belt surrounds one end of the transition shaft and the shaft of the worm gear reduction box, and the secondary synchronous belt surrounds the cable-wire turnplate shaft and the other end of the transition shaft. The gearing device of the hanging digital-radiography system utilizes the synchronous belts to carry out driving, and the transmission process is smooth and precise, thereby reducing the motional noise of the gearing device to the minimum; meanwhile, the characteristics of the self-lockable worm gear reduction box are utilized to improve the safety of the gearing device, and since no motor with electromagnetic brake is needed, the cost is saved.

The invention provides a buoy camera shooting control system and method, and belongs to the technical field of ocean observation and detection. The buoy camera shooting control system comprises a buoybody, and a camera arranged in the buoy body, and an underwater sound monitoring device used for monitoring a sea area sound signal in real time, and a main control unit arranged in the buoy body. The underwater acoustic monitoring device is connected with the buoy body, and the main control unit is electrically connected with the camera and the underwater acoustic monitoring device and used forcontrolling the camera to be turned on and off according to an acoustic signal monitored by the underwater acoustic monitoring device. The buoy camera shooting control method comprises the following steps: the main control unit controlling the camera on the buoy body to be turned on and off according to an acoustic signal monitored by the underwater acoustic monitoring device. Under the conditionof limited energy and power consumption, the system not only has a real-time monitoring function, but also can intelligently control the opening and closing of a photographing or video recording function.

The invention discloses a bag bottom folding preventing device for a double-layer bag bagging machine and belongs to the field of package bag processing equipment. The bag bottom folding preventing device for the double-layer bag bagging machine comprises a bag grabbing rack mounted on the driving guide sliding mechanism of the bagging machine, a left retracting mechanism and a right retracting mechanism mounted on the left and the right of the bag grabbing rack respectively, a left mechanical claw and a right mechanical claw, wherein the left mechanical claw is connected with the left retracting mechanism through a left bag grabbing arm, the right mechanical claw is connected with the right retracting mechanism through a right bag grabbing arm, the bag grabbing rack is used for driving the left mechanical claw and the right mechanical claw to move back and forth, the left retracting mechanism and the right retracting mechanism are used for driving the left mechanical claw and the right mechanical claw to move towards the inside or the outside of the bag grabbing rack, and the left mechanical claw and the right mechanical claw are used for clamping internal bags. The bag bottom folding preventing device for the double-layer bag bagging machine solves the problem of folding of the inner bags of double-layer bags and can fully fill the bottoms of the bags with materials during application, thereby making full use of space of the double-layer bags. Meanwhile, the bag bottom folding preventing device for the double-layer bag bagging machine is simple in structure and good in use effects.

The invention relates to an apparatus and a method for vector component data acquisition. Aspects of the disclosure may reduce motion noise by mounting vector component sensors on a bottom-weighted instrument platform that is supported with a spherical bearing. An apparatus for data acquisition is provided. The apparatus includes a base assembly, a spherical bearing mounted to the base assembly, and an instrument platform having at least one vector component sensor fixed thereto. The instrument platform is mounted on and supported by the spherical bearing. The spherical bearing couples the instrument platform to the base assembly and allows free angular rotation of the instrument platform, within a tilt angle range. The instrument platform is bottom weighted in that it has a center of massdisposed below its center of rotation. The apparatus may include a controller that receives and / or stores data from the at least one sensor.

The invention relates to a device for measuring cardiac functions, in particular to a staged ladder for measuring cardiac chronotropic functions, which comprises a bottom plate, wherein the upper surface of the bottom plate is provided with a staged ladder and a sliding device along the front part in the length direction of the bottom plate; the staged ladder comprises three layers of ladders, wherein a first-stage ladder, a second-stage ladder and a third-stage ladder are respectively arranged from bottom to top, i.e. the second-stage ladder is arranged above the first-stage ladder, and the third-stage ladder is arranged above the second-stage ladder; the height of the first-stage ladder is 25cm; the height of the second-stage ladder and the height of the third-stage ladder are 20cm; the first-stage ladder is fixed on the bottom plate; the second-stage ladder and the third-stage ladder slide along the length direction of the bottom plate through the sliding device; a locking device is arranged between the back side surfaces of each of the ladders; the sliding device comprises slide ways and a slide way fixing frame fixed on the bottom plate; the slide ways are respectively arranged at the contact part of the first-stage ladder and the second-stage ladder and the contact part of the second-stage ladder and the third-stage ladder; and the slide ways are fixed on the slide way fixing frame.

The invention discloses a moving door mechanism and an air conditioning device. The moving door mechanism comprises a motor, a gear box, a gear, a rack and a moving door, wherein the motor is fixed atthe gear box; the gear is accommodated in the gear box and is connected with an output shaft of the motor; the rack is mutually meshed with the gear; the moving door is fixed on the rack; and the gear box comprises at least one moving component, and the moving component props against the moving door and bears the weight of the moving door. According to the technical scheme, the moving door mechanism is steady to work and does not shake, noise in the motion process is reduced, and the user experience is improved.

The invention relates to an automatic sample feeding device for detecting a chemical oxygen demand of water quality. The automatic sample feeding device comprises a machine box, a Y-axis movement assembly, an X-axis movement assembly and a sample feeding module. The automatic sample feeding device is characterized in that a clamping groove for fixing a test tube rack is formed in a bottom plate of the machine box; a fixing bracket is arranged on the side face of the machine box; the Y-axis movement assembly is fixedly arranged at the upper end of the fixing bracket of the machine box through a screw; the X-axis movement assembly is fixedly arranged on a Y slide block of the Y-axis movement assembly; the sample feeding module is fixedly arranged at the lower end of the fixing bracket. The automatic sample feeding device adopts a quantitative tube device to realize accurate control of liquid feeding amount; a quantitative tube is matched with a liquid level sensor to be used so that an injection molding pump stops a liquid feeding process when the liquid feeding amount reaches the liquid level sensor; a reagent only exists in the quantitative tube and a pipeline and does not flow into the injection molding pump so that pollution and corrosion to the injection molding pump caused by liquid are avoided. According to the automatic sample feeding device, the liquid feeding amount is increased and the sample feeding of two types of liquid can be realized simultaneously.

The invention discloses a small track probing robot with damping vibration absorbing wheels. According to the small track probing robot, the service life can be prolonged, the noise in movement is reduced and the operation is stable; moreover, necessary high automotive performance for the small track probing robot is provided, and the strong vibration and impact produced by performing high-speed cross-country mobility in complex and rugged environment or when walking up and down the stairs can be greatly reduced. The damping absorbing wheels are arranged in rows between the two sides of a robot body and a track, so that the vibration absorbing and buffering effects can be achieved, and the damping vibration absorbing wheels can serve as bearing wheels of the small probing robot; moreover, the track of the robot is able to adopt to the rough grounds, and the movement performance of the robot is effectively improved.

The invention discloses a security patrol robot for a closed park. The security patrol robot comprises a moving module, and a detection module, a control module, an execution module and a power supply module which are assembled on the moving module, wherein the control module comprises a main control computer in communication connection with a power system, an inertial navigation device in communication connection with the main control computer and a wireless communication mechanism, the main control computer is in communication connection with a remote control end through the wireless communication mechanism, the detection module comprises a camera and a laser radar which are used for collecting pictures, a smoke sensor used for detecting smoke information and a toxic gas sensor used for detecting toxic gas. Compared with a crawler-type mobile chassis, a wheel-type mobile chassis has the advantages of high speed, high efficiency, low motion noise and high flexibility, and can normally operate in an uneven ground working environment; and the camera, the laser radar, the smoke sensor and the poison gas sensor are matched for use, so that security patrol can be effectively carried out in the closed park.

The invention discloses an electromagnetic valve for hemodialysis. The electromagnetic valve for hemodialysis mainly structurally comprises a valve body provided with an inner cavity, an extendable sliding iron core is mounted in the inner cavity of the valve body, and the upper end of the iron core and a top coil of the inner cavity are fixed while the lower end of the iron core is connected with a sealing gasket to drive the sealing gasket to move up and down and control the valve to open and close. The electromagnetic valve for hemodialysis has the advantages of low power consumption, small size, excellent corrosion resistance, no medium leakage, easiness in cleaning, simplicity in operation, convenience in mounting and capability of making an electromagnetic system high in switching speed, rapid to respond and high in efficiency.

The present invention discloses a pork rib block cutting device and relates to the field of food processing devices. The pork rib block cutting device comprises a front-end bracket assembly, an intermediate bracket assembly, a rear-end bracket assembly, a high-pressure gas pipeline, a rear-end pulley assembly, block cutting belts, a pork rib block pushing-out assembly, block cutting hobs, synchronous belts, synchronous wheels, a speed reducer, a motor, etc. The motor drives a front-end pulley assembly via the speed reducer, the synchronous belts and synchronous wheels are used to transmit motion to the block cutting hobs, cutting edges of the block cutting hobs can form bisection with cutting edges on the block cutting belts, and thus a whole slice of the pork ribs are cut into blocks. Inorder to avoid adhesion of the pork rib blocks, the pork rib block pushing-out assembly is arranged inside the block cutting hobs, air injection rollers are arranged at rear-ends of the belts, under functions of a cam plate, sealing roller assemblies, etc. the air injection rollers inject high-pressure gas in fixed positions, and the cut pork rib blocks adhering to the block cutting belts are blown off. The device can be applied to automatic block cutting of the whole slice of the pork ribs.

The invention discloses an integral bearing mechanism for a ball screw. The integral bearing mechanism comprises a screw, a flange-type bearing sleeve, a bearing group, a gland and a locking nut, wherein the end part of the screw is provided with a shaft shoulder, and the shaft shoulder is provided with a threaded part; a step-type through hole is formed inside the flange-type bearing sleeve, the step-type through hole consists of a large circular hole and a small circular hole, and the large circular hole and the small circular hole are coaxially arranged; the bearing group consists of at least two bearings of the same model number, and the bearing group is installed in the large circular hole; the gland is of a disc-shaped structure, a shaft through hole is formed in the circular hole, a cylindrical lug boss is arranged on one end of the gland, the lug boss is installed into the large circular hole and fit to the outer end surface of the bearing group; the locking nut is matched with the threaded part of the screw; the inner end surface of the bearing group is fit to a stepped surface formed by the large circular hole and the small circular hole, and the inner end surface of the locking nut is fit to the outer end surface of the gland. By adopting the integral bearing mechanism, the contact rigidity and high-precision stable rotation property of the bearing can be greatly improved; moreover, the positioning precision stability is good.

A bogie skirting board installation structure of a high-speed EMU is characterized by comprising a bogie skirting board, a fixed support, an anti-rotating sliding block, a fastening bolt, a lock nut and safety pins. The bogie skirting board is provided with four sleeve bases, the fixed support is provided with four fixed pins, the four sleeve bases of the bogie skirting board and the four fixed pins of the fixed support are installed in an inserted connection mode, the inner side of the bogie skirting board is provided with a sliding groove, the anti-rotating sliding block is arranged in the sliding groove, and the lock nut is placed in the anti-rotating sliding block and penetrates the fixed support to fasten the bogie skirting board and the fixed support together through the lock nut and the safety pins to form a stable anti-loosing structure. According to the bogie skirting board installation structure, it is guaranteed that the bogie skirting board is not loosened, and the safety of the bogie skirting board is improved. Nylon sleeves are arranged between the sleeve bases and the fixed pins, and motion noises of the bogie skirting board are reduced. The inner side of the bogie skirting board is provided with the sliding groove, the exposed surface is kept smooth, and an appearance effect and an air resistance reduction effect of the bogie skirting board are improved.

The invention discloses a combined arm strength training aid. The combined arm strength training aid comprises a main rod (2), a left handle (3), a right handle (3), a left spring (5) and a right spring (5), wherein a locating sleeve (1) is arranged in the middle of the main rod (2), the left handle (3) and the right handle (3) are correspondingly arranged on the two sides of the main rod (2) in a sleeving mode, the left spring (5) and the right spring (5) are correspondingly arranged on the two sides of the main rod (2) in a sleeving mode, and the two ends of the main rod (2) are correspondingly provided with detachable locating mechanisms (6); the left handle (3) and the right handle (3) are arranged on the inner side of the main rod (2), and the left spring (5) and the right spring (5) are arranged on the outer side of the main rod (2); the two ends of the left spring (5) and the right spring (5) are correspondingly provided with spring bushings (4) capable of sliding relative to the main rod (2); sliding sleeves capable of sliding relative to the main rod (2) are arranged in the left handle (3) and the right handle (3). By the adoption of the structure, the combined arm strength training aid has the advantages that the structure is simple and reasonable, function transformation is convenient, many actions can be trained, the bodybuilding effect is good, and exercise, entertainment and fun are integrated.

The invention relates to an electrically-driven small bionic four-leg robot. The electrically-driven small bionic four-leg robot is a twelve-degree-of-freedom pure electrically-driven small mammalian bionic four-leg robot. The robot is of a four-leg robot mechanism structure designed based on the bionic structure and the motion feature of a four-leg mammal. The electrically-driven small bionic four-leg robot comprises a mechanical system and a power and motion control system. The simplified mechanical structure and a highly-integrated small real-time motion control system are adopted in the electrically-driven small bionic four-leg robot. Each leg of the robot is provided with three low damping moment control joints directly driven by a permanent-magnet synchronous motor (PMSM), each leg is provided with a spring energy storage mechanism, and therefore the four-leg robot has the higher energy using efficiency. Multiple motion gaits such as creeping, walking, trotting and running can be achieved through the electrically-driven small bionic four-leg robot, and the electrically-driven small bionic four-leg robot has the advantages of being simple in mechanical structure, ultra-low in noise, and low in cost, achieving dynamic self-balancing and the like.

The invention discloses a three-wheel scooter. The scooter comprises a handlebar(1), a front pike stand pipe (3), a connection base (4), left and right pedal tubes (6, 7), a front wheel (9), a universal rear wheel (10) and a braking device (2), wherein the left and right pedal tubes (6, 7) are rotationally arranged on a rotation shaft (20), a folding device is arranged between the connection base (4) and the left and right pedal tubes (6, 7), the device comprises a lock screw stem (5), a positioning shaft (11) and left and right positioning plates (17, 23), the positioning shaft (11) is arranged on a left and right guide groove (21), the lock screw stem (5) is connected with the positioning shaft (11), the left and right positioning plates (17, 23) are provided with a driving bayonet (16) and a folding bayonet (18) symmetrically, and the two ends of the positioning shaft (11) are locked on the driving bayonet (16) or the folding bayonet (18). After adopting the structure, the scooter has the advantages of simple and reasonable structure, convenient folding operation, safe and stable use, low noise, long service life and the like.