89 results about "Tooth missing" patented technology

The invention relates to an engine transient air inflow estimation method based on model. The invention is characterized in that the method includes the following physical models and computing methods: acquisition and processing of inlet pressure sensor signal, a main aeration model based on speed-density method, a secondary aeration model based on throttle valve flow characteristic, a throttle valve angle estimation model, an inlet air pipe dynamic load model and estimation of volumetric efficiency; calculation process is that the secondary aeration model and the throttle valve angle estimation model are sequentially calculated in 10ms task and the current inlet pressure, the main aeration model, the inlet air pipe dynamic load model and the volumetric efficiency estimation model are calculated in tooth-missing interruption. Control accuracy is improved, thus avoiding the phenomena that torque responsiveness is poor under transient working condition and emission is worsen.

In a driving force transmission mechanism in a motor type damper device, when a small AC synchronous motor rotates in one direction and a tooth-missing gear part of a tooth-missing gear engages with the first rack part of a rack member the rack member is moved upward to operate a baffle in an open direction and, when the tooth-missing gear part engages with the second rack part of the rack member, the rack member is moved downward to operate the baffle in a close direction. In this manner, even when the baffle and the rack member are operated in both directions, the tooth-missing gear is required to be rotated in only one direction and the rotation of the small AC synchronous motor is not required to be reversed. Therefore, the structure of a control circuit for the motor type damper device can be simplified.

The invention relates to an automatic door and drawer opening device used for a refrigerator. The automatic door and drawer opening device comprises a shell and an upper cover. A drive assembly, a push rod, a guide rail, a reset spring, a microswitch and a microswitch stirring rod are arranged in the shell. One end of the reset spring is connected to the shell, and the other end of the reset spring is connected to the push rod. A gear shaft of a tooth-missing gear is sleeved with the tail end of the microswitch stirring rod. An arc-shaped protrusion is arranged in the tail end of the microswitch stirring rod. An arc-shaped groove is formed in the upper end of the gear shaft of the tooth-missing gear. The start end face of the microswitch stirring rod abuts against the side face of an elastic piece of the microswitch. The automatic door and drawer opening device is reasonable in structural design, the installation space is saved, the process requirement is lowered, the production cost is reduced, and the work reliability and stability are improved; and the tooth-missing gear is arranged, when a door or drawer of the refrigerator is pushed open, the push rod ingeniously resets through the reset spring, and therefore the push rod does not need to be driven by a motor to reset, control is more flexible, intelligent and user-friendly, and noise generated when the device works is greatly reduced.

The invention relates to a preparation device of a disinfecting solution for the gynecology and obstetrics department. The device comprises a preparation box body, a motor, a worm, a rotating shaft, stirring shafts, a turbine, a transmission shaft, a tooth-missing gear, a material blocking plate, a rack, a telescopic rod and a limit spring, the rotating shaft is fixedly connected with the output end of the motor through the worm, the stirring shafts are mounted on the rotating shaft, the transmission shaft is rotatably connected to the inside of the preparation box body, the turbine is fixedlyarranged at the front position of the transmission shaft, the tooth-missing gear is fixedly arranged at the rear position of the transmission shaft, the rack is slidably connected to the inside of the preparation box body, the telescopic rod is fixedly arranged at the right end of the rack, the telescopic rod is connected with the inner wall of the preparation box body through the limit spring, the tooth-missing gear is located on the rack, and the material blocking plate is arranged at the left end of the rack. The above design realizes the cyclic opening and closing of a feeding hopper, achieves the purpose of intermittent feeding, completes layered stirring and improves the stirring effect.

The invention discloses a feeding device. The feeding device comprises a push rod, a base, a tooth missing gear as a force application device, and a drive rod with a rack, wherein a plurality of tooth missing sections are arranged on the tooth missing gear, the tooth missing gear is driven by a motor and engaged with the rack on the drive rod, the drive rod is connected with the push rod, and the push rod is connected to the base through a return spring. The feeding device is capable of realizing multiple reciprocating actions by virtue of the plurality of tooth missing sections as the gear rotates by one circle, and therefore, the working efficiency of the feeding device is improved and the processing progress is accelerated.

In order to overcome the defects of an existing gingival margin curve extraction mode, the present invention discloses a gingival margin curve design method for a personalized implant tooth. The gingival margin curve design method for the personalized implant tooth comprises the following steps of: a step 1 of respectively reconstructing gingival margin profiles of a residual tooth of a patient suffering from tooth missing and a three-dimensional dental model of a sample, extracting feature regions of gingival margin curves according to an obtained maximum principal curvature value, extracting gingival margin feature lines of the residual tooth of the patient suffering from tooth missing and the sample by utilizing a granular computing and cellular automaton combining method, then respectively fitting the gingival margin feature curves of the residual tooth of the patient suffering from tooth missing and the dental model of the sample, and finally, constructing a single gingival margin curve of the residual tooth of the patient suffering from tooth missing and the sample; a step 2 of constructing a gingival margin biological multivariate statistical analysis model of the sample; and a step 3 of designing a personalized gingival margin curve of a missed tooth of the patient. The method disclosed by the present invention aims to improve accuracy and efficiency of designing the implant tooth gingival margin curve, improve the repaired gingival margin profile form of the implant tooth, and improve a repair success rate of the personalized implant tooth.

The invention discloses a device for testing the wear resistance of a tire and the impact resistance of a hub, which comprises a detection platform, wherein the upper end face of the detection platform is provided with a bracket and an installation table, the installation table is provided with a horizontal through hole, the through hole is internally provided with a first transmission shaft, theend, which is away from a buffer installation device, of the first transmission shaft is provided with a tooth missing gear, the other end of the first transmission shaft is provided with a cross-shaped bracket, and four brackets of the cross-shaped bracket are sequentially provided with an impact friction device, an inclination friction device, a pit friction device and a flat ground friction device. The device can simulate the friction received by the tire and the impact received by the hub more accurately in a complex road condition or a single road condition, and can test the wear resistance of the tire and the impact resistance of the hub more accurately.

The invention provides a tablet batch crushing device, in particular to a tablet batch crushing device for a pediatric pharmacy. The invention aims at solving the technical problem to provide the tablet batch crushing device for the pediatric pharmacy with the advantages that the work efficiency can be improved; the work intensity can be reduced; the operation is simple. In order to solve the technical problems, the invention provides the tablet batch crushing device for the pediatric pharmacy. The device comprises a base, first support frames, a second support frame, a tooth-missing rack, a baffle plate, a spring, a first connecting plate, a slide rail, a slide block, a first fixed plate, a first motor and the like, wherein the first support frames are vertically connected to the left side and the right side of the top of the base; the second support frame is horizontally connected onto the upper part of the right side surface of the first support frame positioned at the left side. Tablets in a medicine crushing tank can be crushed in batches through the continuous vertical movement of a medicine crushing hammer, so that the tablet crushing in batches can be realized; the work efficiency can be improved; the work intensity can be reduced.

The invention discloses a combined type hollow camshaft. The combined type hollow camshaft comprises a camshaft body, a combined type cam and a signal wheel, wherein the combined type cam and the signal wheel are arranged on the camshaft body. The combined type cam and the signal wheel are provided with assembly holes used for being formed in the camshaft body. The camshaft body is fixedly connected with a cam base circle part of the combined type cam and a tooth missing part of the signal wheel through pin structures. A machining process comprises the following steps that the hollow camshaft body is cast; a blind hole is machined in a corresponding shaft neck of a fastening cam on the camshaft body, a step hole corresponding to the blind hole in the camshaft body is machined in the combined type cam, and a cam rivet is pressed into the corresponding holes in the combined type cam and the camshaft body; a fixed hole is machined in the tooth missing part of the signal wheel, and a blind hole corresponding to the fixed hole is machined in the camshaft body; and a conical pin is pressed into the fixed hole of the signal wheel and the blind hole corresponding to the fixed hole. The machining process difficulty and cost are reduced.

A paper discharge roller pair, a roller support member, a support member rotation mechanism, a drive transmission unit, and a single drive source are provided; the paper discharge roller pair has a second roller disposed opposite to the first roller; the roller support member is freely rotatably supported The first roller can move between the first position where the first roller can cooperate with the second roller to discharge the sheet and the second position where the first roller is separated from the second roller; the support member turning mechanism makes the roller support member Rotation; the drive transmission part transmits the drive to the support member rotation mechanism; the single drive source transmits the drive to the drive transmission part. The roller support member is provided with a tooth-less gear portion and a cam stopper portion, and the support member turning mechanism has a tooth-less gear and a cam respectively corresponding to the tooth-less gear portion and the cam stopper portion of the roller support member, so that the roller support member can be Movement from the first position to the second position and movement of the roller support member from the second position to the first position.

The invention discloses an efficient assembling device for a new energy battery pack. The device comprises an assembly box, a first conveyor belt and a second conveyor belt; a first rectangular opening is formed in the side wall of one side of the assembly box; a second rectangular opening is formed in the side wall of the other side of the assembly box; one end of the first conveyor belt movablypenetrates through the first rectangular opening and extends into the assembly box. A T-shaped pressing block, a control box and a tooth missing gear are combined, so that a battery and a battery boxcan be efficiently assembled and the accuracy of assembly is improved; an electromagnet attracts an iron block to move rightwards after being electrified and two clamping plates clamp the battery on the first conveyor belt, and, after clamping, move rightwards along with an annular sleeve; the T-shaped pressing block can press the battery and insert the battery into the battery box when a movablerod loosens the battery; thus, battery assembling is achieved, battery damage caused during battery assembling is effectively avoided, manual operation is not needed, the automation degree is high, and the labor intensity of workers is effectively relieved.

The invention provides a mobile phone cover plate silk-screen defect detection device and method based on machine vision. The method comprises the steps: an industrial camera obtains a to-be-detectedmobile phone cover plate image, a computer carries out binarization, registration and differential processing on the image, and a differential image is obtained; whether there is a defect is determined; and if YES, the defect is classified, and the corresponding mobile phone cover plate is moved to the corresponding position of a recycling box according to a classification result. The device and method have the beneficial effects that according to the technical scheme provided by the invention, detection and classification algorithms are used for researching four defects including window toothpulling, window tooth missing, stains and light leakage in mobile phone cover plate defects, so that detection and classification of the four defects are realized; and the defect detection algorithmis high in adaptability, high-precision detection of cover plate silk-screen defects of different brands and different series of products can be achieved by manufacturing different templates, and thedetection precision is high.

The invention provides a sheet supply device which can reduce up-and-down movement of pressing paper along with paper supply movement. The sheet supply device comprises a paper supply roller, an input gear, a first output gear, a clutch mechanism, a pressing plate, a cam controlling the ascending displacement and the descending displacement of the pressing plate, a second output gear which meshes with the input gear and rotates to make the cam rotate and consists of a sector gear comprising a first tooth missing part and a second tooth missing part without teeth, a spring applying rotating force to the second output gear, and a maintaining mechanism maintaining a first stop state and a second stop state. In the first stop state, the input gear faces the first tooth missing part, and in the second stop state, the input gear faces the second tooth missing part; when the input gear stops, the first stop state is formed, and when the paper supply roller rotates, the second stop state is formed.

The invention discloses a hydraulic windlass with a rope guider. The hydraulic windlass comprises a hydraulic windlass body, a motion and power output gear and the rope guider, wherein the hydraulic windlass body is provided with a windlass winding drum; the motion and power output gear and the rope guider are arranged on the casing of the windlass winding drum; the motion and power output gear adopts a gear structure that teeth are lost uniformly in the circumference; the rope guider is provided with a transmission chain and a bidirectional spiral rod; the tooth missing gear is meshed with a first shaft gear of the transmission chain; the transmission chain is connected with the bidirectional spiral rod; a rope guide operation component is arranged on the bidirectional spiral rod; the windlass winding drum is internally provided with an oil motor and a multi-stage planetary reducer; a chain wheel is arranged on the outer surface of the planetary reducer.

The invention discloses an adjustable intermittent drive mechanism and belongs to the technical field of drive mechanisms. The adjustable intermittent drive mechanism comprises a box body base, a power input mechanism, a gear mechanism and an output mechanism. The gear mechanism comprises a driving gear arranged on the box body base, a driving gear disc I and a driving gear disc II are connected on the driving gear, the driving gear disc I and the driving gear disc II are coaxial and are provided with tooth missing sections, arc-shaped grooves are formed in the two driving gear discs, the driving gear disc I is connected with the driving gear disc II through the arc-shaped grooves, and the two driving gear discs are meshed with a driven gear in the output mechanism. Through the adopted structure, the adjustable intermittent drive mechanism has the advantages that the structure is reasonable, output adjustment is simple and convenient, output of intermittent movement can be achieved, and drive is stable.

The invention relates to a method for adjusting a route reciprocating clearance. A rectangular frame is arranged in the middle of a machine frame; sliding shafts are symmetrically fixed at two ends of the rectangular frame of a machine body; the machine frame is mounted in a sliding bearing through the sliding shafts at the two ends of the rectangular machine frame; the machine frame has a degree of freedom for moving relative to the sliding bearing; long slotted holes which are communicated from inner to outer are arranged at in upper and lower two edges of the rectangular frame of the machine frame; a rack is composed of two same parts; the rack is fixedly mounted in the long slotted holes at the upper and lower two edges of the rectangular frame of the machine frame through bolts; and a tooth-missing gear is fixedly mounted in the middle of the rectangular frame of the machine frame through a central shaft.

The invention relates to a mobile type polishing machine for plate surfaces, in particular to a mobile type high-efficiency high-stability polishing machine for plate surfaces. In order to solve the technical problems, the invention provides the mobile type high-efficiency high-stability polishing machine for plate surfaces, which is environmentally-friendly, energy-saving, simple to operate, and is integrated in polishing process. The mobile type high-efficiency high-stability polishing machine for plate surfaces comprises a first bearing base, a supporting table, a first clamping rubber roller, a first gear, a first rotary rod, a motor, a second rotary rod, a first bevel gear, a tooth-missing bevel gear and the like, wherein the third bearing base is arranged below the fourth bearing base; and the third bearing base is connected with a fixed plate in a bolt connecting mode. The mobile type polishing machine achieves the effects of being energy-saving, environmentally-friendly, time-saving and labor-saving.

The invention relates to an agricultural machine, and especially relates to a feeding mechanism installed on a planting machine and capable of providing pot seedlings for a mechanical seedling taking device and automatically feeding the pot seedlings. The automatic feeding mechanism used for bidirectional screw axis slide block type seedling feeding of a farmland planting machine comprises a pot disc rack, a transverse feeding mechanism and a vertical feeding mechanism; and the transverse feeding mechanism mainly includes a box body, a double screw shaft, a slide block and a decollators, and the vertical feeding mechanism mainly includes a double screw shaft, a tooth missing gear I, a transmission shaft, a gear I, a tooth missing gear II, a gear II, sprocket wheels and a chain. The automatic feeding mechanism has a compact structure, is convenient to operate, is installed on the planting machine, and can provide the pot seedlings for the mechanical seedling taking device and automatically sending the pot seedlings to realize the seedling taking automation of the planting machine, so the automatic feeding mechanism has the advantages of machine mechanism simplification, production cost reduction, and work reliability and work efficiency increase.

The invention belongs to the mining technical field and specifically relates to a real-time visual detection method for electric shovel bucket tooth missing. The method comprises the following steps:1)shooting a group of positive and negative samples of electric shovel bucket teeth in advance; 2) extracting HOG features of the positive and negative samples; 3) inputting the HOG features to an SVMclassifier for training and obtaining a decision function; 4) inputting the pictures shot in real time on site, carrying out HOG feature extraction through a detection window, and then, through SVM classification, finishing preliminary detection of the electric shovel bucket teeth; 5) carrying out SC constraint on the obtained electric shovel bucket tooth detection result to finish accurate detection of the electric shovel bucket teeth, wherein the step is realized through the following specific substeps: a) image preprocessing and contour extraction, b) SC feature calculation and c) shape similarity calculation; and 6) comparing the accurate detection result of the electric shovel bucket teeth and the number of bucket teeth set in advance when the electric shovel bucket teeth are intactto judge whether the electric shovel bucket teeth are missing. The method overcomes the problem of low accuracy due to false detection and detection miss of a conventional visual detection method, andreduces false alarm rate.

The invention discloses an automatic welding machine for plastic carry strips. A motor is reduced by a reducer, and then drives a plurality of rotating shafts with cams or tooth-missing gears to synchronously rotate; the cams and the tooth-missing gears push various executing components to complete the feeding of plastic bags, the opening of the bags, intermittent feeding of a double-layer plastic film coil, cutting of the plastic film into strips, and bending of the film strips into a U shape; and the U-shaped film strips extend into the opened bags, the bags are folded, and an electrothermal welding head presses and welds the strips to form the carry strips of the plastic carry bags. The automatic welding machine has the advantages of high automation level and simple and convenient operation, and can be combined with bag-making equipment such as a hot cutting machine and the like to form a full automatic plastic carry strip welding machine.

The invention discloses a movable bridge type tooth pile for a false tooth, which comprises a tooth pile matrix, a fixed pin and a movable pin. The size of the tooth pile matrix is adaptive to an inner cavity of a false tooth crown for being assembled in the false tooth crown; the fixed pin is vertically arranged at one side of the bottom of the tooth pile matrix; a pin hole vertically running through the tooth pile matrix is formed in the other side of the tooth pile matrix, which is opposite to the fixed pin; the pin hole is used for inserting the movable pin and the movable pin is longer than the pin hole; a tooth residual root is provided with a first positioning hole and a second positioning hole in advance; the fixed pin is connected with the first positioning hole by a safety pin from one side of the bottom of the tooth pile matrix; the movable pin then is inserted into the pin hole from the top of the tooth pile matrix, until the bottom end of the movable pin penetrates through the pin hole and is connected with the second positioning hole by a safety pin. According to the movable bridge type tooth pile for the false tooth, which is disclosed by the invention, independent mounting of the false tooth crown in a to-be-repaired tooth missing position can be implemented, so that full-crown repair carried out after part of tooth body tissues of healthy teeth at both sides of a missed tooth are abraded is avoided; moreover, the safety pins at both ends are assembled with a core, so that stability of a false tooth mounting structure can be kept; under the assisting action of an adhesive, the structure can be more stable.

The invention provides an induction tooth missing device which comprises an upper towing wheel, a lower towing wheel, a zipper assembling puller and a puller installing platform, wherein the zipper assembling puller is arranged on the puller installing platform, and a tooth missing induction block is arranged behind the zipper assembling puller. When the induction tooth missing device works, the upper towing wheel and the lower towing wheel rotate in the reversed directions, and after a zipper is assembled through the zipper assembling puller, the zipper is pulled out through common action of the upper towing wheel and the lower towing wheel, the tooth missing induction block is arranged behind the zipper assembling puller, and after the zipper is assembled, the tooth missing induction block detects the assembled zipper. When a part of the zipper misses teeth and is detected, the tooth missing induction block reacts and marks the part of the zipper, and therefore real-time monitoring in the working process of a tooth row machine is achieved, and normal production of products is guaranteed. The invention further provides the tooth row machine which comprises a motor, a support frame and a zipper assembling device is the induction tooth missing device provided with the structure.

The invention provides a clamping tool for drilling a drive shaft and belongs to the technical field of clamps. The clamping tool solves the problem how to improve the drilling precision of the drive shaft. The clamping tool comprises a base plate and a support fixed to the base plate. The support is provided with a locating hole for the drive shaft to penetrate through is formed in the support in a penetrating manner. The base plate is further provided with a stop block and an ejecting and pressing mechanism. The stop block and the ejecting and pressing mechanism are located on the two sides of the support in the forming direction of the locating hole. The clamping tool is characterized in that the locating hole is a spline hole, a tooth missing position is arranged on the portion, between the two spline teeth, of the inner side wall of the locating hole, a cavity communicating with the lower portion of the locating hole is formed in the support, an elastic locating assembly is arranged in the cavity, and the elastic locating assembly partially extends into the lower portion of the locating hole under the elastic force effect of the elastic locating assembly. According to the clamping tool for drilling the drive shaft, while accuracy of the drilling position is ensured, the drilling precision is improved, and the production efficiency of enterprises is improved.

The invention relates to spike assisting equipment, and particularly relates to spike assisting equipment for sports volleyball teaching. The technical problem is to provide spike assisting equipmentfor sports volleyball teaching which does not need to waste extra manpower and is consistent in serving height and angle. The spike assisting equipment for sports volleyball teaching comprises a moving plate, first fixing blocks, rollers, a motor, a tooth-missing bevel gear, a bearing pedestal, a rotating rod, a winding wheel, a first steel wire rope, a first bevel gear, a mounting plate and the like, wherein the first fixing blocks are symmetrically arranged at the front and back of the left side of the bottom of the moving plate, the rollers are symmetrically arranged at the front and back of the right side of the bottom of the moving plate, and the motor is arranged at the right side of the bottom of the moving plate. The spike assisting equipment is provided with a ball inlet cylinder,a plurality of volleyballs can be put in the ball inlet cylinder, and the volleyballs in the ball inlet cylinder can move to a lifting plate in a placement cylinder, so that people can perform a spike, and it is unnecessary for people to add a volleyball into the placement cylinder after performing a spike, thereby being capable of enabling the operation to be more convenient.

The invention relates to a method for segmenting three-dimensional tooth grid data based on a harmonic field algorithm. The method comprises steps of introducing three-dimensional tooth grid data, sequentially picking two points for each tooth to be segmented in the three-dimensional tooth grid data, and determining the foreground constraint point and the background constraint point of each toothto be segmented; determining whether the vertex in the three-dimensional tooth mesh data is located in the concave surface, and further determining the concave surface information of the vertex; calculating the Gaussian curvature value of the vertex in the three-dimensional tooth grid data; calculating a harmonic field scalar value based on the harmonic field algorithm; calculating an unknown coefficient matrix x; and obtaining the segmentation boundary contour of each tooth to be segmented by the boundary contour threshold division and smoothing the segmentation boundary contour, and finallycompleting segmentation of the three-dimensional tooth grid data. The method solves the phenomenon that the segmentation error is caused by the inconspicuous tooth boundary, can better segment the teeth in the case of teeth missing and high crowding degree, and has high robustness.

In order to overcome the defects of an existing gingival margin curve extraction mode, the present invention discloses a gingival margin curve design method for a personalized implant tooth. The gingival margin curve design method for the personalized implant tooth comprises the following steps of: a step 1 of respectively reconstructing gingival margin profiles of a residual tooth of a patient suffering from tooth missing and a three-dimensional dental model of a sample, extracting feature regions of gingival margin curves according to an obtained maximum principal curvature value, extracting gingival margin feature lines of the residual tooth of the patient suffering from tooth missing and the sample by utilizing a granular computing and cellular automaton combining method, then respectively fitting the gingival margin feature curves of the residual tooth of the patient suffering from tooth missing and the dental model of the sample, and finally, constructing a single gingival margin curve of the residual tooth of the patient suffering from tooth missing and the sample; a step 2 of constructing a gingival margin biological multivariate statistical analysis model of the sample; and a step 3 of designing a personalized gingival margin curve of a missed tooth of the patient. The method disclosed by the present invention aims to improve accuracy and efficiency of designing the implant tooth gingival margin curve, improve the repaired gingival margin profile form of the implant tooth, and improve a repair success rate of the personalized implant tooth.

The invention discloses an energy storage rebounding fruit picking equipment. The energy storage rebounding fruit picking equipment comprises a cutting device for cutting a fruit stem, a drive mechanism for driving the cutting device, and a shell body for installing the cutting device, a hollow groove is arranged on the shell body, the shell body is provided with a partition plate for dividing thehollow groove into an upper cavity and a lower cavity, the cutting device is arranged in the upper cavity, the drive mechanism is arranged in the lower cavity, the cutting device comprises a fixing plug pin, a driven gear, an irregular gear, a blade, a movable plug pin and a coil spring, the fixing plug pin is arranged on the partition plate, an axis sleeve of the driven gear is arranged on the fixing plug pin, the driven gear can rotate relatively to the fixing plug pin, the axis of the irregular gear is rotatably arranged on the partition plate, the irregular gear comprises a toothed part and a tooth missing part, the movable plug pin is eccentrically arranged one surface, back on to the partition plate, of the driven gear, the blade is provided with two openings for allowing the fixingplug pin and the movable plug pin to penetrate through, the coil spring is located at the upper part of the blade, one end of the coil spring is connected to the fixing plug pin, and the other end ofthe coil spring is connected to the movable plug pin.

The invention discloses an auxiliary tooth socket applicable to a mixed dentition period. The auxiliary tooth socket comprises a tooth socket body, wherein the tooth socket body comprises a non-transparent mechanism which is arranged at a tooth losing part, and a transparent mechanism which sleeves dentitions at the two sides of the tooth losing part to fix the auxiliary tooth socket, wherein the non-transparent mechanism is internally provided with a containing cavity which is set according to a tooth growth period of the tooth losing part; and the non-transparent mechanism is set to be a tooth shape after a lost tooth grows. The auxiliary tooth socket applicable to the mixed dentition period, provided by the invention, is mainly used for patients who are 6 to 12 years old at the mixed dentition period; the tooth losing part is set to be the tooth shape after the lost tooth grows, and the part sleeving the dentitions is set to be a transparent structure, so that the auxiliary tooth socket has a very strong aesthetic feeling; and meanwhile, inarticulacy caused by the fact that air leaks from the lost tooth and injuries to gums can be prevented, and the auxiliary tooth socket has very strong enablement practiability and operability.

The invention discloses a metal can lid feeding and conveying mechanism, and belongs to the field of container equipment processing mechanical equipment. A lid feeding mechanism of the metal can lid feeding and conveying mechanism is vertically arranged on a fixing bracket and on one side of a lid transferring mechanism, a lid guiding mechanism is obliquely arranged on the fixing bracket and on the upper side of a lid conveying mechanism downwards, a lid feeding connecting plate is slidably arranged on the lower side of a lid bearing hopper in the vertical direction, the two sides of a lid conveying belt are connected to a main lid conveying roller and an auxiliary lid conveying roller in a winding manner, a tooth missing gear and a lid conveying gear are connected in a meshed manner, a lid guide chute is arranged in a lid guide rail, the upper end of the lid guide rail communicates with a lid outlet guide hole, and a buffer mechanism and a lid blowing mechanism are sequentially arranged on the upper side of the lower end of the lid guide rail in the oblique direction from top to bottom. The metal can lid feeding and conveying mechanism is reasonable in structure design, can lids can be continuously and efficiently fed one by one in a sliding manner, the can lids can be smoothly and accurately conveyed intermittently, the automation degree of feeding and conveying of the can lids is improved, and the production and use requirements are met.

The invention discloses a bionic hopping robot. The number of power source pieces of an existing hopping robot is large, the effective power density is low, the weight is large, and the hopping height and the distance are small. The bionic hopping robot comprises a rack, a front-leg hopping mechanism, a rear-leg hopping mechanism and a transmission mechanism. The front-leg hopping mechanism comprises a front-leg shaft, a front-leg power rod, a front-leg small spring, a front-leg connecting rod, a front-leg large spring and a front-leg sole rod. The rear-leg hopping mechanism comprises a rear-leg shaft, a rear-leg power rod, a rear-leg small spring, a rear-leg connecting rod, a rear-leg large spring and a rear-leg sole rod. The transmission mechanism comprises a motor, a pull roll wheel, a spring, a gear set, a second driven shaft, a first driven shaft, a power rod set and a steel cable. The gear set comprises three tooth-missing gears and three full-tooth gears. According to the bionic hopping robot, through collaborative operation of the front-leg hopping mechanism and the rear-leg hopping mechanism, stable and continuous hopping advance can be conducted.