95results about How to "Increase transmission strength" patented technology

A welding-type device has a wireless communication unit to transmit wireless signals comprising at least identification information or location information. The information may be transmitted either automatically or in response to request signals. Such a welding-type device may be configured to communicate with other welding-type devices, a monitoring device, or both. A wireless communication system has at least one welding-type device, at least one wireless communication assembly, and at least one monitoring device and is capable of assisting a user in locating particular welding-type devices, monitoring inventory, preventing theft of welding-type devices, and scheduling preventive maintenance.

The invention discloses a vehicle-borne emergency call-for-help system and a call-for-help method thereof, which enable manual call-for-help and automatic emergency call-for-help for car accidents to be realized and belong to the technical fields of automotive electronics and communication. According to the system and the method, embedded and integrated navigation technology and communication technology are adopted so as to realize manual or automatic emergence call-for-help. Vehicle collision detection is carried out through vehicle motion information acquisition by an information acquisition device in the system and safety airbag ignition detection; then, collision information is transmitted to a central processing unit for processing; and processed data and pre-stored basic vehicle information are transmitted and received through a triple-redundancy method via short message, network and voice DTMF at most and reliable technologies such as non-normal termination decision, dual antennas and standby power supplies are adopted so as to improve the success rate and reliability of call-for-help and rescue. According to the system provided by the invention, an original vehicle is only modified a little, and the system is suitable for all vehicles and has a wide range of application.

An improved antenna arrangement is distinguished by the following features: at least two antenna element systems are provided and each has at least one antenna element, which are arranged offset with respect to one another, at least in the horizontal direction, the at least two antenna element systems transmit and receive at least in one common polarization plane, a network is provided, via which the at least two antenna element systems can be supplied with a signal (Ain1, Ain2) with an intensity or amplitude which can be set differently or which can be adjusted relative to one another and preferably with a different phase angle.

The invention relates to a linkage clutch of a washing machine. The linkage clutch comprises a drive shaft and a drive shaft sleeve, wherein the drive shaft is rotatablely arranged in the drive shaft sleeve, a drive fluted disc is fixedly connected to the drive shaft, a driven fluted disc is fixedly connected to the drive shaft sleeve, a planetary gear which is synchronously meshed with the two fluted discs is arranged between the drive fluted disc and the driven fluted disc, the planetary gear is arranged on a planetary wheel cage with external teeth, a clutch gear ring is sleeved outside the planetary wheel cage and meshed with the planetary wheel cage and can slide up and down, insertion teeth are arranged at the lower end of the clutch gear ring, slots matched with the insertion teeth are arranged on the drive fluted disc, an electromagnetic coil is arranged above the clutch gear ring, a spring is arranged between the clutch gear ring and the electromagnetic coil, and the lower part of the drive shaft is connected with a drive member. In the linkage clutch of the washing machine, a plane bevel planetary wheel transmission mechanism and an electromagnetic clutch mechanism are adopted, the insertion teeth for inserting connection and the planetary wheel cage are adopted to serve as an internal gear mechanism of the clutch, and the advantages of compact structure, small volume, high transmission intensity, accuracy for control, skillful and reasonable structure design and strong practicability are achieved.

The invention discloses a mechanical sealing device of a high-pressure water injection pump. A shaft sleeve is provided with a step, a movable ring assembly is fixed on the outer wall of the shaft sleeve, one end of the movable ring assembly is abutted against the step, an elastic compensation assembly comprises a stationary ring seat, a stationary ring which is embedded on the stationary ring seat, an anti-rotation pin which is arranged on the stationary ring seat and a plurality of small springs, a sealing gland bush is provided with an axial accommodating hole, a plurality of spring holes are uniformly distributed on the circumference, the anti-rotation pin is plugged into the accommodating hole and can float in the axial direction, the small springs are arranged inside the spring holes, one end of each small spring is abutted against the stationary ring seat, the tail end of the stationary ring seat stretches out of the sealing gland bush, the tail end of the stationary ring seat is provided with a clamping spring, the elastic compensation assembly is pre-installed on the sealing bland bush, the inner wall of the sealing gland bush is fixedly provided with a distribution ring, and a plurality of injection holes are uniformly distributed on the distribution ring. The elastic compensation assembly is installed in a stationary manner and free from the influence of centrifugal force, the small springs which are uniformly distributed can result in good floatability, the elastic compensation assembly is pre-installed in the sealing gland bush through the clamping ring, and the injection holes which are uniformly distributed can realize multipoint washing, so that uniformity in cooling can be realized.

The invention relates to a motor specially used for a miniature circuit breaker. The motor comprises a permanent magnet motor and a reduction gearbox connected to the permanent magnet motor, wherein a motor gear is fixedly connected to a motor shaft of the permanent magnet motor, and meshed with an input gear of the reduction gearbox, the gear shaft of the input gear is fixedly connected to a box body of the reduction gearbox, the input gear is meshed with an output gear, the output gear is fixedly connected to an output gear shaft, and the output gear shaft can be rotatably fixed on the box body of the reduction gearbox. As the permanent magnet motor in the invention is provided with the motor gear which is provided with the input gear of the reduction gearbox, and the gear shaft of the reduction gearbox is directly fixed on the box body, therefore, the structure is compact, the whole volume of the motor is reduced, and the cost is reduced.

An embodiment of the invention provides a white laser generating device comprising an infrared laser source, a first optical fiber, a frequency doubling crystal, a second optical fiber and a spectrum widening module which are arranged sequentially. The infrared laser source is used for generating infrared laser, the frequency doubling crystal is used for utilizing frequency doubling effect to convert the infrared laser into visible laser, and the spectrum widening module is used for widening the visible laser to obtain white laser. The infrared laser source passes through the frequency doubling crystal for laser frequency doubling, efficient ultrashort pulse frequency doubling is realized, the visible laser of certain wavelength is output and then enters a nonlinear medium through coupling by the second optical fiber, and high-power broadband visible laser outputting is realized. At the moment, spectra can cover wavebands of 450-760 nm, and high-power white laser can be generated.

A transmission belt comprising a belt body and a cord. The belt body is made of a rubber composition. The cord is comprised of poly-p-phenylene benzobisoxazole fiber. The cord is embedded in the belt body. The belt body and the cord are formed into an integral whole by vulcanizing the rubber composition. The surface of the cord is subjected to a primary treatment involving coating a mixture of an epoxy compound and latex and heat treating, and a secondary treatment involving coating a resorcinol-formalin-latex adhesive and heat treating.

The invention discloses involute tooth-thickness variable non-circular gear transmission. The device comprises an involute tooth-thickness variable non-circular gear I and an involute tooth-thickness variable non-circular gear II, which are meshed with each other, wherein the axes of the involute tooth-thickness variable non-circular gear I and the involute tooth-thickness variable non-circular gear II are parallel in a plane or intersected in the plane, or the axes of the involute tooth-thickness variable non-circular gear I and the involute tooth-thickness variable non-circular gear II are spatially crossed. As the axes of the involute tooth-thickness variable non-circular gear I and the involute tooth-thickness variable non-circular gear II are parallel or intersected in the plane or spatially crossed, the involute tooth-thickness variable non-circular gear transmission can be utilized to realize spatial transmission, which not only inherits the advantages of high strength, good rigidity, convenience for manufacturing and processing and high reliability of involute tooth-thickness variable gear transmission of spatial parallel axes, concurrent axes and alternating axes, but also meets the requirement of gear ratio transmission.

The invention relates to a cutter head deep-loosening stubble-ploughing rotary tillage multifunctional machine which comprises a transmission case assembly arranged on the side edge and a gearbox assembly arranged at the central position. The transmission case assembly comprises a coulter transmission case assembly and a deep-loosening knife transmission case assembly, and the coulter transmission case assembly and the deep-loosening knife transmission case assembly are connected to two sides or the same side of the gearbox assembly through support arm casings. The coulter transmission case assembly and the deep-loosening knife transmission case assembly both comprise a transmission case body, a driving chain wheel, a driven chain wheel, a transmission chain and a driven half shaft and are further provided with a coulter shaft assembly and a deep-loosening cutter head shaft assembly. Two ends of the deep-loosening cutter head shaft assembly and two ends of the coulter shaft assembly are provided with flanges, one end of the deep-loosening cutter head shaft assembly and one end of the coulter shaft assembly are connected with the driven half shaft through the flanges, and the other end of the deep-loosening cutter head shaft assembly and the other end of the coulter shaft assembly are connected with a bearing half shaft through the flanges. The cutter head deep-loosening stubble-ploughing rotary tillage multifunctional machine is reasonable in structural design and convenient to use and maintain, a series of field operation such as deep loosening, rotary tillage, seeding, fertilizing, stubble ploughing and ditching can be achieved simultaneously, and the problems of land hardening and the like which are caused by the fact that the land cannot be ploughed deeply due to interplanting structural model are effectively solved.

The invention discloses a garbage collection and sorting machine. The machine comprises a control system, an identification device, a main cabinet and multiple sub cabinets. A horizontal movement device is arranged between the main cabinet and all the sub cabinets and provided with a vertical movement device, the vertical movement device is provided with a dumping device, and the dumping device isin transmission connection with a collection hopper. The main cabinet is provided with an opening, and a weighing mechanism is arranged in the main cabinet. A pushing device comprises a driving assembly, two connection bases and two lead screws, the two lead screws are rotatably arranged in the length direction of two baffles respectively, the two connection bases sleeve the two lead screws in atransmission mode respectively, the two ends of a push plate are connected with the two connection bases respectively, and the two lead screws are in transmission connection with the driving assemblyseparately. The identification device, the horizontal movement device, the vertical movement device, the pouring device and the driving assembly are electrically connected with the control system separately. The garbage collection and sorting machine is applied to the technical field of garbage sorting.

The invention belongs to the technical field of carton packaging machinery, and particularly relates to a film covering packaging device for carton green production. The film covering packaging devicefor the carton green production comprises a laminating machine, a stacking machine and a manipulator for transferring products between the laminating machine and the stacking machine. The film covering packaging device is further provided with a control system through which the laminating machine, the manipulator and the stacking machine work cooperatively. According to the film covering packaging device for the carton green production, the film covering and packaging work of the printing products can be completed quickly, so that the overall production efficiency of the printing products isimproved while the manpower investment is reduced, and the production capacity is increased.

A liquid crystal display device of a vertical alignment mode is provided in which a quenching pattern, which is generated by such liquid crystal molecules whose in-plane component of the alignment directions under applied voltage is aligned along the cross nicole directions, is unrecognizable for a user. In the liquid crystal display device of a vertical alignment mode, a liquid crystal layer is has a defined value of d / p between 0.0021×(Vmax)2−0.0458×(Vmax)+0.65 and 0.0021×(Vmax)2−0.0458×(Vmax)+0.50, and a defined value of d·Δn / λ between −0.00026×(Vmax)3+0.016×(Vmax)2−0.2281×(Vmax)+2.124 and −0.00026×(Vmax)3+0.016×(Vmax)2−0.2281×(Vmax)+1.7603, where Vmax [V] is the maximum applied effective voltage applied to the liquid crystal layer.

The invention discloses a coupling comprising a first half coupling body, a second half coupling body and middle connecting pieces. One end of the first half coupling body is provided with at least one pair of protruding teeth, two pairs of sliding contact faces are arranged on the two protruding teeth belonging to the same pair respectively, the inclination directions of the sliding contact faces are opposite, and the included angles between the sliding contact faces and the radial plane are equal. The second half coupling body is provided with an end section which is staggered with the protruding teeth. The middle connecting pieces are connected to the end section in a sliding mode and can only move freely in the axial direction, inclined sliding grooves are formed to be matched with the protruding teeth, and the second half coupling body can be connected to the protruding teeth in a mode that the second half coupling body can move freely in all directions of the sliding contact faces. Meanwhile, each protruding tooth is at least matched with one middle connecting piece, the mass of the middle connecting pieces matched with the two protruding teeth belonging to the same pair is equal, and the common mass center of all the middle connecting pieces matched with the protruding teeth in the pair is arranged on a rotating shaft of the second half coupling body. Therefore, radial deviation and axial deviation between the two shafts can be compensated, and dynamic loads generated by the middle connecting pieces can be mutually counteracted inside to achieve balance.

The invention discloses a wireless Bluetooth headset. A left headset / right headset of the wireless Bluetooth headset comprises a headset body, a battery, a PCB and an antenna module are installed in the headset body, the wireless Bluetooth headset further comprises a metal wire core arranged at the outside of the headset body, and the metal wire core is in ground connection with the PCB in the headset body. In the wireless Bluetooth headset disclosed by the invention, the wire core in an ear hook component is made of a metal material and is in ground connection with the PCB, so that the ear hook component extends the ground plane length and the area of the PCB, greatly improves the signal transmission efficiency and the signal radiation field intensity of the antenna ad effectively enhances the creeping wave transmission strength behind the brain, thereby ensuring the stability of a communication stability between the left headset and the right headset and finally improving the audio playing effect of the Bluetooth headset; and moreover, in view of the communication distance of an actually measured product, the communication distance between the left headset and the right headset is improved by more than 100%.

The invention discloses a weighing mechanism for recovering garbage and a garage collecting and classifying machine. The weighing mechanism for recovering the garbage comprises a base; the base is provided with a weighing device and a pushing device; baffle plates are separately arranged on the two sides of the weighing device; a push plate is slidingly connected between the two baffle plates; thebottom of the push plate is near the top surface of the weighing device; the push plate is in transmission connection with the pushing device; the pushing device comprises a drive module, two connecting bases and two lead screws; the two lead screws are rotatably arranged in the length directions of the two baffle plates; the two connecting bases are respectively sleeved on the two lead screws bytransmission; the two ends of the push plate are respectively connected with the two connecting bases; and the two lead screws are separately in transmission connection with the drive module. When classified garbage is collected, the garbage can be quickly weighed, and the weighed garbage is pushed into a next procedure, so that the garbage collecting and classifying automation and intelligence are conveniently achieved. The weighing mechanism is applied to the technical field of garbage classification.

The invention relates to the technical field of planetary gear transmission, in particular to a planetary gear carrier. The planetary gear carrier comprises a front planetary carrier body and a rear planetary carrier body. A connecting column connected with the rear planetary carrier body is arranged on the front planetary carrier body. A corresponding groove connected with the connecting column is formed in the rear planetary carrier body. Brazing holes are formed in the surface of the groove. The front planetary carrier body and the rear planetary carrier body are integrally connected through sintering and brazing. A transmission spline is arranged on the front planetary carrier body and is an outer spline. Island-shaped protrusion reinforcing structures are further arranged at the groove of the rear planetary carrier body and located at the two ends, in the circumferential direction, of the rear planetary carrier body. The planetary gear carrier has the advantages of being high in transmission strength, good in transmission stability, long in service life and the like.

The embodiment of the invention provides a screen protection film and electronic equipment. The screen protection film is used for fitting a display screen module; one side, facing away from the screen protection film, of the display screen module is provided with an ultrasonic fingerprint module; the screen protection film can penetrate ultrasonic waves emitted by the ultrasonic fingerprint module; the screen protection film is provided with a resonance layer; the resonance layer is provided with a first surface adjacent to the ultrasonic fingerprint module and a second surface opposite to the first surface; the resonance layer can enable ultrasonic waves emitted from the first surface towards the second surface and ultrasonic waves reflected from the second surface towards the first surface to be superimposed so as to generate resonance. The thickness of the screen protection film does not need to be compressed to reduce ultrasonic attenuation, so that the ultrasonic penetration property, fitting property and mechanical property of the screen protection film can be achieved.

The invention relates to an intelligent anti-theft well lid. The intelligent anti-theft well lid comprises a well lid bottom seat, a well lid and a downhole sensor, wherein the well lid is installed in the well lid bottom seat, a positioning device is arranged on a connection position of the well lid and the well lid bottom seat, an observation window is arranged in the well lid, a mounting frameis arranged on the observation window, the positioning device comprises a positioning groove formed in the periphery of the well lid bottom seat, a fixing device is arrange at the bottom of the well lid, a rotation mechanism is arranged in the fixing device, the rotation mechanism is movably connected in the positioning groove, an abnormal movement reminder device is arranged at the bottom of thefixing device, the abnormal movement reminder device is connected with the downhole sensor, the downhole sensor is connected with the mounting frame, and a transmitting antenna is arranged on the downhole sensor. The intelligent anti-theft well lid can be obtained by performing integrated anti-theft refit on a traditional well lid, and simultaneously by installing a wireless signal transmission device, the intelligent anti-theft well lid enhances signal intensity so as to guarantee signal transmission of heating equipment.

The invention provides a falling preventing device of a door rolling machine. The falling preventing device comprises a base. A concave cavity is arranged on the base, and a self-locking gear is mounted in the cavity and is fixedly connected with a transmission shaft; movable steel balls or steel columns are arranged among teeth of the self-locking gear, ball grooves are formed in the inner side wall of the cavity, self-locking bosses are arranged on the tops of the ball grooves, the teeth are provided with arc-shaped tops, the ball grooves comprise ball groove side arcs and ball groove bottom arcs, the ball groove side arcs of each ball groove are positioned on two sides of the ball groove, the ball groove bottom arc of each ball groove is positioned at the bottom of the ball groove, and the radiuses of the ball groove bottom arcs are smaller than those of the ball groove side arcs, so that the widths of side openings of the teeth and gaps among the tops of the teeth can be gradually enlarged when the teeth approach the self-locking bosses. The falling preventing device has the advantages that the unique ball grooves are designed, accordingly, the impact strength can be reduced, the steel balls or steel columns can rub with top arcs of the teeth and the inner walls of the ball grooves after being tossed out of bottom arcs of the teeth if chains are suddenly broken under the condition of high-speed rotation of the transmission shaft, frictional force can be increased when the teeth get close to the self-locking bosses, damping and decelerating effects can be realized, and the impact strength among the teeth, the steel balls or steel columns and the self-locking bosses can be reduced.

The invention provides a helmet safety experience device, which can simulate the feeling of a human body in case of a safety accident and ensures that builders can experience the importance of a helmet in building production activities. The helmet safety experience device comprises a master control system and further comprises a housing, as well as a mounting support, a knocking rod lifting mechanism, a knocking slider component and a knocking rod release component which are arranged in the housing, wherein a chute in the vertical direction is formed in the housing; the knocking rod lifting mechanism is arranged on the mounting support; the knocking slider component is positioned above a lifting support block; and the knocking rod release component is positioned above the knocking slider component. As the knocking rod lifting mechanism and the knocking rod release component are arranged, a knocking rod can be lifted to a certain height and then falls onto the helmet worn on the head of an experiencer in the manner of a freely falling body, and accordingly, the knocking safety experience of the helmet is realized.

The invention discloses a processing method of spiral bevel gears for main reducers of axle housings. The processing method comprises the processing methods of driving bevel gears, driven bevel gears and a motor coupling. Wherein the structural design of the driving bevel gears and the driven bevel gears is characterized in that the teeth number ratio of the driving bevel gears and the driven bevel gears is 47 to 11, the module is 4.65, the average pressure angle is 20 degrees and the midpoint helical angle is 35 degrees; and the teeth numbers of the meshed splines of a main teeth engagement sleeve,a main teeth connection sleeve and a motor engagement sleeve of the motor coupling are the same. According to the processing method disclosed by the invention, the structure of the driving bevel gears and the driven bevel gears is designed and the manufacturing procedures of gear milling and gear grinding are adopted to process the driving bevel gears and the driven bevel gears respectively, so that the processing operation is simple. In addition, the precision of the processed gears and the motor coupling is high, the engagement effect is good, the high strength of the gears is ensured and the noise of the gears in transmission is lowered.

The invention discloses a plant planting device for ecological restoration of a tailing pond in an arid region and a using method. The plant planting device comprises a gasoline engine, a rotating shaft is arranged at the bottom end of the gasoline engine, an end column is fixed to the bottom end of the rotating shaft, a first splicing block is fixed to the end face of the end column, and a second splicing block is arranged at the bottom end of the first splicing block; the using method comprises the following steps that firstly, sufficient gasoline is injected into the gasoline engine, and the gasoline engine is started through a pull rope to work; and secondly, a supporting frame is held, so that a vertical angle is formed between a drill rod and a contact surface. By designing the first splicing block and the second splicing block, a traditional integrated drill rod installation mode is divided into two parts, when the first splicing block and the second splicing block are subjected to large resistance, the inclined faces of the first splicing block and the second splicing block generate a mutual twisting and extruding effect, the second splicing block is extruded, the second splicing block slides into an installation block, then the first splicing block and the second splicing block are separated from each other, power transmission is stopped, and it is guaranteed that the gasoline engine cannot be subjected to load damage due to large power.

The invention discloses an electroplating solution filtering device. The electroplating solution filtering device comprises a bottom plate, a barrel body is arranged at the top of the left side of thebottom plate, the surface of the barrel body is fixedly connected to the top of the bottom plate through a connecting frame, a sealing cover is fixedly mounted at the top of the barrel body through abolt, and a concave-shaped filtering barrel located in the barrel body is fixedly mounted at the bottom of the sealing cover through a bolt. According to the electroplating solution filtering device,a scraping mechanism is driven by a transmission mechanism through a rotary rod to scrap the inner wall of the barrel body to a certain degree, then water in a water tank is injected into the barrelbody through a cleaning mechanism to clean, thus crud is discharged through a discharging pipe, the advantage that the inner wall of a fixing barrel is conveniently cleaned is achieved, and the problem that a fixing barrel of an existing filtering device is not provided with a certain cleaning mechanism, consequently the inner wall of the fixing barrel is prone to being tainted with much impurities after a long time using, cleaning is conducted by a user with a hand tool after a cover is opened, and the cleaning efficiency is lowered is solved.

The invention discloses a height-adjustable LED light post, comprising a bed plate. A transmission case is fixedly connected to the top of the bed plate, a support tube is welded to the top of the transmission case, the bottom end of the support tube is communicated with the top of the transmission case, the bottom of the inner wall of the transmission case is movably connected with a first screwthrough a bearing, and the top end of the first screw extends to the inside of the support tube. A transmission mechanism drives the first screw to rotate, the first screw can drive a transmission cylinder to move up and down through a first nut, and the transmission cylinder moves up and down while driving an LED light body to move up and down through a connecting plate and a square plate. Therefore, the LED light post has the advantage of realizing height adjusting, solves the problem of failure in adjusting height of the conventional LED light post which is of fixed arrangement, also avoidsthe problem of single function due to the fact that lighting range of the LED light is inconvenient to adjust due to failure in height adjustment of the LED light post, and brings convenience to users.

The invention discloses a drum-shaped toothed rail wheel for a coal mining machine. The drum-shaped toothed rail wheel comprises a toothed rail wheel main body and a plurality of drum-shaped teeth, wherein the tooth surface of each drum-shaped tooth smoothly transitions into an arc drum-shaped curved surface from the tooth surface center line to the two sides so as to form a drum-shaped tooth surface; a bearing matching through hole is formed in the center of the toothed rail wheel main body; and a plurality of connecting keys are arranged on the surface of the toothed rail wheel main body. The invention also discloses a preparing method of the drum-shaped toothed rail wheel for the coal mining machine, and the drum-shaped toothed rail wheel is obtained by processing 18Cr2Ni4WA alloy steelby means of the method. According to the drum-shaped toothed rail wheel for the coal mining machine and the preparing method of the drum-shaped toothed rail wheel, the meshing contact area between the drum-shaped toothed rail wheel and a pin row is increased through the drum-shaped tooth surfaces, the contact stress between the drum-shaped toothed rail wheel and the pin row is reduced, the service life of the drum-shaped toothed rail wheel is prolonged, and the drum-shaped toothed rail wheel has the advantages of excellent eccentric load resistance, stable transmission and strong bearing capacity; and through refining, forging, heat treatment, carburization and shot blasting, the tensile strength, bending strength, contact strength and toughness of the drum-shaped toothed rail wheel are improved.

The invention discloses an ammonium paratungstate crystallization kettle with strong stability. The crystallization kettle comprises a crystallization kettle body, wherein the surface of the crystallization kettle body is fixedly connected with a top plate, four corners of the bottom of the top plate are fixedly connected with support columns, the bottom of the crystallization kettle body is fixedly connected with a bottom plate, and the bottom of the bottom plate is fixedly connected with a transmission box. A transmission mechanism drives a bearing plate to move downwards by a lead screw anda thread sleeve, the bearing plate compresses pressing blocks tightly, and at the same time the bottom of the bearing plate also contacts with the ground, and the bearing plate drives sucking discs to move downwards to adsorb the ground, so that the crystallization kettle has the advantages of strong stability, and the problem that an existing crystallization kettle is supported only by triangular support columns at the bottom, and stability is poor is solved. The ammonium paratungstate crystallization kettle with strong stability avoids the phenomenon that a service life of the triangular support columns is reduced because the triangular support columns are easy to rub against the ground due to shaking, and is convenient for people to use.

The invention relates to a triangular chained clamping and cutting system for a small garlic harvester. The system comprises a clamping arm, cutting devices, a plant holder and a guider, the clampingarm consists of an isosceles-triangle transmission mechanism and a rectangular transmission mechanism, and a clamping passage is formed between the two mechanisms of the clamping arm. Two cutters arestaggered vertically while a small gap is reserved between the two cutters, and shafts of the cutters extend downwards by a certain distance to make it convenient to approach garlic bulbs to realize cutting. An included angle of 15-30 degrees is formed between the clamping passage and a transverse center line of the harvester, a feeding port of the clamping passage is positioned behind a limitingwheel of the harvester, and the front end of the guider is positioned on the inner side of the limiting wheel. The plant holder is parallel to the transverse center line of the harvester, the plant holder and the guider are positioned on two sides of the clamping passage and form a certain included angle, and picked garlic plants are guided into the clamping arm and delivered by the clamping arm to the tail end to realize garlic bulb cutting by the cutting devices.

The invention discloses a fastener switching device for an automobile wire harness. The fastener switching device for the automobile wire harness comprises a stud; a square plate is fixedly connectedto the bottom end of the stud; and a backing plate is fixedly connected to the bottom of the square plate. According to the fastener switching device for the automobile wire harness, a sleeve drives arubber sleeve I to move downwards through a thread sleeve and a concave sleeve and is in contact with the surface of an automobile metal sheet; and meanwhile, the concave sleeve can extrude the rubber sleeve I downwards so as to increase the friction force between the concave sleeve and the automobile metal sheet; the concave sleeve fixes the stud through an interaction force, and therefore, theadvantage that the stability of the fastener switching device is improved after clamping claws of the fastener switching device can be clamped into circular holes for compression is obtained; the problem that an existing fastener switching device is prone to being damaged due to shaking in the automobile using process because the existing fastener switching device is also fixed on the surface of the automobile metal sheet through clamping claws and circular holes and does not have a certain pressing mechanism is solved; the practicability of the fastener switching device is improved; and the use is made convenient for people.