126results about How to "Realize automatic return" patented technology

The invention provides a method and system for returning of an unmanned plane. Automatic returning of the unmanned plane can be realized after a user clicks a button. The method comprises: obtaining a coordinate of a take-off point after the unmanned plane takes off; planning a flight path and obtaining coordinates of passing points in the flight in real time to form flight path information; receiving a return command from a hand-held terminal; calculating a return path from a coordinate of a present position to the coordinate of the take-off point according to the coordinate of the present position, the flight path information, and the coordinate of the take-off point of the unmanned plane; and controlling the unmanned plane to return along the return path and to land.

The invention discloses a negative pressure pneumatic type automatic sampler for a water sample in a medium-deep layer. The negative pressure pneumatic type automatic sampler comprises a sampling water storage chamber, a balance weight device and a gas-liquid tank, wherein a sampling hole is formed in the upper part of the sampling water storage chamber, a gas-liquid piston cylinder is arranged below the sampling hole, a liquid storage cavity of the gas-liquid piston cylinder is connected with the gas-liquid tank through a pipeline, an environmental pressure control valve is arranged on the pipeline, a balancing weight of the balance weight device is fixed on a balancing weight frame through a balancing weight fixed releasing control valve, the balancing weight fixed releasing control valve is connected with the gas-liquid tank through a water returning pipeline, a water returning control valve is arranged on the water returning pipeline, and a pressure trigger button matched with a water returning control valve is arranged at the bottom of the liquid storage cavity. The negative pressure pneumatic type automatic sampler submerges in water under the action of gravity of the balancing weight, so that the water sample in the medium-deep layer with the depth of below 10-30m is automatically acquired, the balancing weight is discarded, a device automatically returns and the acquired sample is brought out due to the adoption of an underwater negative pressure pneumatic technology.

The invention provides an electric vehicle wireless charging device automatic alignment system and method. The system comprises a wireless charging starting button, a wireless charging receiving device, a wireless charging transmitting device, an image recognition automatic locating device and a moving control driving device, wherein the image recognition automatic locating device obtains the distance between the wireless charging transmitting device and the wireless charging receiving device according to collected information, and controls the moving control driving device and the wireless charging receiving device to move in the horizontal direction and the longitudinal direction. According to the electric vehicle wireless charging device automatic alignment system and method, a mobile wireless receiving device is adopted to achieve automatic alignment, compared with a method in which a driver uses a park assist system, the complicated parking procedures are reduced, the installation is simple, and the cost is lowered; the relative distance of a wireless transceiving device is obtained through a binocular vision system, through a horizontal control driving device, a longitudinal control driving device and a vertical lifting control driving device, the purpose that the receiving device moves in the vertical direction is achieved, and the problem that charging efficiency of vehicles is low when underpans differ in height is solved.

The invention discloses a method for automatic return flight without a GPS (global positioning system) signal. A high-definition camera system is adopted for acquiring ground building video information and storing the ground building video information in an image storage system in a flight process of an airplane; feature information of buildings and terrains is extracted through an image processing algorithm to build an airline information library; ground building images and terrains are also acquired during return flight; the images are processed in a vertical flip manner and compared with the existing airline feature information library; if a plurality of feature buildings or terrains are matched with the airline information library, an airline can be confirmed by a distance measuring device to confirm an instantaneous position of the airplane so as to guide the airplane to realize automatic return flight. The method also can realize automatic return flight without the GPS signal, can be widely applied to actual return flight of various airplanes such as civil airplanes, military airplanes and the like, neither depends on an external control system nor receives data such as the GPS signal and the like, and particularly has the concealed advantages when being applied to the military airplanes.

The invention relates to the field of agricultural machinery, in particular to a method and a machine for cutting and rubbing forage grass used for ensiling and machining of the livestock breeding industry. The machine for cutting and rubbing the forage grass is composed of a rack (19), a gearbox (16), an automatic feeding device (6), a cutting and rubbing chamber (7), a thrower shell (11) and a discharge port (9). The machine can be used for cutting or rubbing operation on all kinds of dry (fresh) forage grass, crop straw and the like. When feed blocking happens in the operating process, a first operating arm (33) on the gearbox (16) is placed into a neutral gear, a second operating arm (31) is placed into a reverse gear, then automatic feed returning can be achieved, and the accident is removed. The machine is easy to operate and high in safety. In the rubbing operation, the breaking ratio of stem joints of materials is promoted, the rubbing effect is good, the rubbed forage grass is convenient to eat for animals, and the ingestion ratio is promoted.

The invention discloses an unmanned plane return flight landing method based on visual sense. An unmanned plane comprises a visual sense module, which is formed by a super wide angle single lens or a plurality of cameras. During the flying process of the unmanned plane, the visual sense module is used to record characteristic points of a flight route to form an image characteristic track. During the return flight of the unmanned plane, the visual sense module is used to acquire a real-time image, and the own flight is determined and adjusted by comparing the characteristic point distribution of the real-time image and the characteristic point distribution of the image frame of the image characteristic track. The unmanned plane return flight landing method based on the visual sense is advantageous in that automatic return flight based on the visual sense module is realized; safe landing is realized by adopting optical flow; obstacles in a landing area are avoided; the safety performance of the unmanned plane is improved, and the accident rate of the unmanned plane is reduced.

The invention provides an automatic book placing and returning device suitable for library book placing, returning and tidying, and belongs to the field of mechanical automation. The automatic book placing and returning device is composed of a moving trolley, a lifting mechanism, a placing and returning device body and a storage book rack, and automation is achieved under the action of a scanningdevice, a drive device and a control system. The placing and returning device body is used for taking out, placing and returning to-be-returned books from the storage book rack to a library book rack.The placing and returning device body comprises a three-coordinate moving table, a taking and placing device and an expanding device. The taking and placing device and the expanding device are connected through a rotation joint. The taking and placing device can do 90-degree rotation motion and can finish the taking and placing task of the to-be-returned books. The expanding device is used for reserving the position of the to-be-returned books on the book rack. The storage book rack is used for storing the to-be-returned books, and a movable baffle is arranged on one side of the storage bookrack. On the basis that an existing library book rack structure does not need to be changed, automatic book placing and returning are achieved, the book management efficiency is greatly improved, andthe labor intensity of management personnel is relieved.

The invention provides a spanner assembly and a communication product. The spanner assembly is used for inserting a veneer handle bar in and pulling the veneer handle bar out of a case. The spanner assembly comprises a handle, a first elastic element, a jacking piece and a connector. The first elastic element and the jacking piece abut against the portion between the handle and the connector. The connector is connected to the veneer handle bar. The handle is in pivot joint with the connector. A groove is formed in the connector. The portion between the jacking piece and the handle is jacked by the first elastic element. The jacking piece abuts against the interior of the groove, so that the handle is located to the connector. When the handle is driven by external force to rotate relative to the connector, the jacking piece slides along the side wall of the groove till the jacking piece is separated from the groove. When external force is eliminated, under the elastic effect of the first elastic element, the jacking piece is reset and abuts against the interior of the groove. After rotating relative to the veneer handle bar, the spanner assembly can be automatically reset under the effect of the first elastic element.

The invention discloses a novel floating caliper disc brake which comprises a brake disc and a brake caliper. The brake caliper on the right side of the brake disc is provided with a piston chamber and a shaft hole, and an electric push rod passes through the shaft hole. A smart encoder that precisely controls the stroke of the electric push rod is mounted on the electric push rod. According to the scheme, a mode of driving a piston by the electric push rod is adopted, and the problem of sealing and oil leakage of a traditional brake does not occur. At the same time, the smart encoder on the electric push rod can accurately control the displacement of a movable brake block and avoid the excessive friction between the movable brake block and the brake disc. After a long period of work, wearoccurs on the surface of the brake disc, and the smart encoder can also well control the displacement of the movable brake block to continue braking. In addition, both sides of the movable brake block and a fixed brake block are provided with damping pieces, the braking vibration and noise can be effectively reduced during braking, and thus the brake according to the scheme is simple in structureand high in reliability.

The invention belongs to a double-trough automatic material returning device for cows. The double-trough automatic material returning device comprises a frame and two troughs arranged in the frame. The double-trough automatic material returning device is characterized in that the frame comprises a bottom surface, a left side surface, a right side surface and a cross beam on the top, the front surface and the rear surface of the frame are open, a scraping plate is arranged at the bottom of the cross beam, the cross beam and the scraping plate are connected through a telescopic damping spring, a rotating mechanism is arranged between the frame and the two troughs, a supporting sleeve is arranged on the side surface in the frame, the center of the supporting sleeve is provided with a shaft hole, the rotating mechanism is connected with the two troughs in the frame and a speed reducer outside the frame through the shaft hole, the speed reducer is connected with a motor control box, and the two troughs are parallel to the bottom surface of the frame. According to the double-trough automatic material returning device, since the two troughs are exchanged vertically in position and turned over, the troughs can return materials automatically, inconvenience caused by manual material return is overcome, and the material return speed is increased; due to the fact that the motor control box is used for controlling the time for turning over the two troughs, automation of the double-trough automatic material returning device is achieved, waste of forage is reduced, and the feed intake of the cows is increased.

The invention provides a pneumatic automatic return device. The problem that in the prior art, the return speeds of doors with different weights are different is solved. The pneumatic automatic return device comprises a shell, an upper convex shaft, a lower convex shaft, a piston, a sealed air chamber and an adjusting device, wherein the shell is of a hollow structure, the upper convex shaft is arranged in a gear sleeve, one end of the upper convex shaft extends outwards from the end part of the gear sleeve, the upper convex shaft only rotates in the gear sleeve, the lower convex shaft is also arranged in the gear sleeve and does reciprocating rectilinear motion only in the length direction of the gear sleeve, the upper convex shaft is in contact with the lower convex shaft, acting force always exists between the upper convex shaft and the lower convex shaft, the rotating motion of the upper convex shaft is synchronous with the rectilinear motion of the lower convex shaft, one end of the piston is used for continuously propping the lower convex shaft against the upper convex shaft, the sealed air chamber is a sealed cavity formed by an upper sealing piece and a lower sealing piece in the shell, high-pressure air is arranged in the sealed cavity, the other end of the piston extends into the sealed cavity, and the adjusting device is used for adjusting the volume of the sealing cavity.

The invention belongs to the technical field of machining equipment, in particular to a special type woodworking compound milling machine. The special type woodworking compound milling machine comprises a base frame, a main workbench mechanism, a feed mechanism, a power devive and a vice workbench mechanism. The main workbench mechanism comprises a main workbench and two fixed supports. The feed mechanism comprises a base, a gantry frame, a sliding table and the power device. The vice workbench mechanism comprises a vice workbench, a lead screw nut and a lead screw and is arranged in front of the gantry frame, a plurality of installing holes are formed in the vice workbench, the lead screw nut is fixed to the rear side of the vice workbench, and the lead screw penetrates through the lead screw nut and is connected with the lead screw nut in a threaded mode. The special type woodworking compound milling machine is reasonable in structure, capable of achieving multi-function and multi-angle milling, punching and copying machining of complicated surface woods, simple in operation, flexible in using, small in energy consumption and occupied area and has great application and promotion value.

The invention provides a protection device for accelerator mistaken stepping in car emergency braking. The device is characterized in that the device comprises a braking foot bar, an accelerator foot bar, a locking mechanism and a mounting seat; the braking foot bar and the accelerator foot bar are mounted on a left ear base and a right ear base of the two ends of the mounting seat through a circular column of the left end of an outer ring and a core shaft correspondingly and axially fixed through flat keys; the locking mechanism comprises the outer ring and a star wheel, the star wheel is mounted in the outer ring, and a baffle is mounted at the right end of the star wheel; wedge-shaped grooves are formed in the star wheel, friction rollers are mounted in the wedge-shaped grooves and pressed at the larger-diameter ends of the wedge-shaped grooves through sensitive springs; and the star wheel and the core shaft are connected through a spline, block columns are arranged on the baffle and the mounting seat to enable a volute spiral spring mounted between the block columns to have compressed elastic potential energy, and the mounting seat is fixed to the corresponding position which a right foot in a vehicle can reach through a bolt set. According to the device, accelerator mistaken stepping can be effectively judged, and rapid response is achieved; and the device is simple in structure, safe and reliable. When danger is removed, automatic resetting of the protection device can be achieved only by loosening the foot.

The invention discloses a multi-sensor information acquisition navigation system and method.The multi-sensor information acquisition navigation system comprises an information acquisition unit.The information acquisition unit transmits acquired information to a processor unit, and the processor unit packages the information and transmits the information to an upper computer after further processing the information.The processor unit comprises a filter module, a posture calculation module, an inertial navigation module and a control module of a gyrostabilizer.Needed algorithms are built in the processor unit to perform operation processing on the acquired information, the processing speed is high, and meanwhile the operation burden of the upper computer is relieved.

The invention discloses a returning device and a roller drying machine with the same. The returning device comprises a receiving hopper and a feeding pipe, wherein the receiving hopper is connected to one end of the feeding pipe which is internally provided with a poking rod; one end of the poking rod is connected with a rope type connecting piece; and the other end of the rope type connecting piece extends out of the feeding pipe to be connected with the outermost end of the hopper. The roller drying machine with the returning devicecomprises a roller body, a sealing cover at the end part of a roller and a charging device, wherein the roller body comprises N-level rollers, i.e., a first-level roller, a second-level roller,ellipsis and the Nth-level roller which are arranged from inside to outside in sequence; the discharging end of the second-level roller, i.e., the feeding end of the third-level roller, is provided with a plurality of the returning devices along the circumferential direction; the outermost end of the hopper is fixedly connected onto the inner wall of the feeding end of the third-level roller; the feeding pipe penetrates through the first-level roller to the inner part of the first-level roller inwards; and the opening direction of the hopper is consistent to the rotating direction of the roller body. The returning device disclosed by the invention has the advantages that automatic returning can be realized, multi-time circulation can be achieved, and the volume of the roller body and the whole drying machine do not need to be enlarged.

The invention relates to the technical field of teaching display devices, and particularly relates to a display device for ethnology teaching. The display device for ethnology teaching comprises a support base, wherein the bottom surface of the support base is provided with a plurality of universal wheels. The display device for ethnology teaching is characterized in that a plurality of clamping blocks fixedly connected with a first connecting rod are installed on a display board, a push block fixedly connected with a second connecting rod is installed above each clamping block, opposite side surfaces of the two connecting rods are provided with a row of sawteeth, and opposite movements of the two connecting rods are realized through a gear between the two connecting rods, so that movements of the clamping blocks are realized through pushing a push rod, and materials in ethnology teaching are clamped and fixedly or quickly taken down. Node clamping and fixing for the second connecting rod are realized through a clamping rod on the second connecting rod, and swinging for the clamping rod is realized through a pull rod above the push blocks, so that release for the second connecting rod is realized, and automatic return of the second connecting rod is realized. The materials in ethnology teaching can be fixed and displayed or taken down and replaced conveniently according to the mode, and the display device for ethnology teaching is very convenient and practical.

The invention discloses a facility agriculture root vegetable sampler. The facility agriculture root vegetable sampler comprises a cutting cylinder, a vegetable pressing board, a fixing table and a material box. The lower part of the fixing table is connected with the material box, a vegetable outlet communicating with the material box is formed in the fixing table, the vegetable pressing board isarranged above the fixing table, a vegetable cutting hole is formed in the middle part of the vegetable pressing board, and the vegetable cutting hole is aligned with the upper and lower parts of thevegetable outlet. The corners of the vegetable pressing board are connected with the fixing table through connecting rods, the cutting cylinder is arranged at the upper end of the vegetable pressingboard, and the cutting cylinder is matched with the vegetable cutting hole. The root vegetables are placed on the fixing table to be fixed by the vegetable pressing board, the rapid cutting and sampling of the vegetables are realized by the cutting cylinder, the shape of samples is the same each time, it is only necessary to cut the samples into the same length according to the detection requirements, the sampling process is safe and efficient, a lot of time is saved, the oxidation time after sample cutting is shortened, and the accuracy and reliability of experimental data are increased.

The invention discloses a sheet conveying and grooving device, and belongs to the field of building material processing machinery and equipment. According to the sheet conveying and grooving device, alifting support is horizontally arranged on the lower side of a conveying support, a plurality of material conveying rotating rollers are sequentially and uniformly arranged on the lifting support inthe horizontal direction, a plurality of material bearing rotating rollers are sequentially and vertically arranged on a material bearing support in the horizontal direction, a plurality of materialpressing rotating rollers are sequentially and vertically arranged on a material pressing support in the horizontal direction, an upper fixing rotating shaft and a lower fixing rotating shaft are sequentially and horizontally connected to a fixing support in a rotating mode from top to bottom, a grooving rotating disc is vertically arranged at one end of the upper fixing rotating shaft, a groovinginclined plane is arranged on one side of the grooving rotating disc, and a grooving pressing rod is arranged on a reciprocating support in a sliding mode in the horizontal direction. According to the sheet conveying and grooving device, the structural design is reasonable, sheets can be stably and accurately conveyed in a translation mode according to requirements, the side edges of the sheets can be continuously subjected to grooving processing in the sheet conveying process, the processing automation degree of the sheets can be improved, and the requirement for processing and using can bemet.

The invention discloses follow-up hooks on a tray lifting mechanism of a shuttling car. The technical problem of achieving automatic returning of two swinging rods in a four-connecting-rod swinging rod mechanism is solved. A four-connecting-rod mechanism shaped like a parallelogram serves as a lifting mechanism and replaces a traditional eccentric wheel lifting mechanism, a frame of the shuttlingcar serves as the bottom edge of the four-connecting-rod mechanism, the top edge of the four-connecting-rod mechanism serves as an executing mechanism of a top connecting tray, parallel left and rightswinging vertical rods are pushed by a gear-rack mechanism, when lifting is conducted, the gear-rack mechanism pushes the two parallel swinging vertical rods to pass through the perpendicular position which has 90 degrees with a car plate of the shuttling car and then be limited by fixed limiting blocks, the follow-up hooks are arranged between swinging rods and pushing and lifting sliding blocks, the swinging rods and the pushing and lifting sliding blocks are connected in a hooked manner through the follow-up hooks when the sliding blocks push the swinging rods leftwards to lift the tray, the pushing and lifting sliding blocks pull the swinging rods to the acute-angle position with the frame of the shuttling car from the over position through the follow-up hooks, and returning of the swinging rods is achieved.

The invention relates to a power supply method for a drone with multiple battery packs. The drone includes a drone body, a drone power supply system includes a power module and a mainboard control module for controlling the operation of the power module, and the power module includes a plurality of battery assemblies which are connected in parallel. The method comprises the following steps that S1, the battery assemblies are numbered as the first battery assembly, the second battery assembly, ... and the nth battery assembly separately in a use order; S2, the motherboard control module startsthe first battery assembly according to the numbering sequence; S3, when the electric quantity of the first battery assembly is equal to or less than a critical electric quantity value, the mainboardcontrol module controls the first battery assembly to stop working and simultaneously starts the second battery assembly; S4, when the electric quantity of the second battery assembly is equal to or less than the critical electric quantity value, battery switching is performed according to the method in step S3 until the nth battery assembly is started; S5, when the remaining electric quantity ofthe nth battery assembly is equal to or less than a return electric quantity value, the mainboard control module controls the drone to automatically return.

The invention relates to a material automatic transporting technological method, and provides a material coating automatic transporting line lifting appliance idle station returning technological method. According to the technological method provided by the invention, a plurality of processing process grooves are formed in a row and are divided into a plurality of groups, a traveling track is arranged above the processing process grooves, a program control travelling crane is mounted in each processing process groove on the travelling track, each group of travelling crane transfers a workpiece lifting appliance from the first processing process groove to the last processing process groove, so as to accomplish processing, and the workpiece is broken off from the lifting appliance and enters into the subsequent handling. The method is characterized in that an idle station is additionally arranged between each two groups of processing process grooves, a lifting appliance bracket is mounted on the idle station, the returning of the lifting appliance is that the last program control traveling crane transfers the idle lifting appliance on the workpiece discharging station to the workpiece charging station in sequence through each idle lifting appliance in the middle and each program control crane; according to the technological method provided by the invention, a large number of precious workshop field and idle lifting appliance returning transporting equipment are saved, and material transferring lines such as airplane, vehicle and machine in manufacturing industry are adopted.

The invention discloses a plant sampling system based on an unmanned aerial vehicle. The system includes a plant sampling device, the unmanned aerial vehicle and a ground base station; the plant sampling device is installed on the unmanned aerial vehicle; the unmanned aerial vehicle includes a vehicle-mounted control system; the vehicle-mounted control system is connected to the plant sampling device and is in wireless communication with the ground base station. The disclosed plant sampling system depends on an unmanned aerial vehicle technique and can achieve mechanical and automatic plant sampling, improve the work efficiency, save manpower and material resources and improve the data sampling precision and a detection result.

The invention relates to an integrated structural minimally-invasive fascia closer. The integrated structural minimally-invasive fascia closer comprises a thread clamp and a puncture needle, wherein the thread clamp comprises a shell body and a pull rod arranged in the shell body, the end portion of the pull rod is fixedly connected with a thread slot fixing head, a thread fixing slot is arranged at the end portion of the thread slot fixing head, the outer wall of the shell body and the side wall of the wire slot fixing head are connected by virtue of two groups of connection outer shells in a mirror symmetry about the axis of the shell, and each connection outer shell group comprises a supporting outer shell A with the end portion being connected with the outer wall of the shell body and a supporting outer shell B with the end portion being connected with the thread slot fixing head; a constraint thread slot is arranged on the side wall, corresponding to the supporting outer shell A, of the shell body; a thread passing opening is coaxially formed in the supporting outer shell A, the puncture needle comprises a needle tube main body, a lantern ring is also arranged in the needle tube main body, the lantern ring is fixedly provided with a traction rod which is connected with the inner wall of the needle tube main body in a sliding manner, an opening is formed in the lantern ring, and two axial ends of the opening of the lantern ring are elastically closed under the extrusion of the inner wall of the needle tube main body.

The invention provides a building steel bar end thread rolling mechanism. The mechanism comprises a base, a motor rolling integrated device is fixed on the middle part of the base, rib stripping mechanisms are symmetrically connected with two sides of the motor rolling integrated device, the rib stripping mechanisms are fixed in a shell body, the shell body is fixed on the base, feeding mechanismsare arranged on the outer sides of the rib stripping mechanisms, clamping mechanisms are installed on the feeding mechanisms, the motor rolling integrated device comprises a motor base, a motor stator is fixed on the inner wall of the motor base, a rotatable motor rotor with a built-in permanent magnet is arranged in the motor base, three thread rolling wheels which are evenly distributed are meshed with the inner ring of the motor rotor, and the three thread rolling wheels are installed on three rotating shafts and are supported by a planet carrier. After rib stripping is completed, a steelbar is controlled by a second servo motor to be bitten into the front ends of the thread rolling wheels, the steel bar to be rolled, the three thread rolling wheels and the inner ring of the motor rotor form a planetary gear train, and the motor rotor rotates to drive the thread rolling wheels to rotate to complete rolling. The thread rolling mechanism improves the machining efficiency, is not prone to deviation and is high in thread rolling quality.

The invention relates to the technical field of vehicle fuel systems, and discloses a fuel temperature control valve. The fuel temperature control valve comprises a first joint, a second joint and a third joint which communicate with one another, wherein a wax type sensor is installed in a hole of the first joint, an induction end of the wax type sensor extends out of the first joint, and the other end of the wax type sensor is provided with a push rod; the push rod abuts against a valve which slides in the hole of the first joint, the other end of the valve is provided with a first spring abutting against the valve, a first valve port cooperating with the valve is arranged in the first joint, a pressure valve and a second valve port cooperating with the pressure valve are arranged in thesecond joint, and a second spring which inwards abuts against the pressure valve is arranged in the second joint; and the invention further discloses fuel temperature control system of a vehicle usingthe fuel temperature control valve. According to the fuel temperature control valve and the vehicle fuel temperature control system, the high-temperature returned oil is controlled to enter a filteror a fuel tank according to the temperature of the fuel in the filter, so that the whole performance of the whole vehicle is improved.

The invention provides pulping equipment based on variable-stroke reciprocating pressure punching and turbulent flow filtration flushing type pulping, the pulping equipment mainly comprises a slurry generating device, a power driving device, a variable-stroke reciprocating driving device, a turbulent flow filtration flushing device, a down-pressing back-flushing device and a reciprocating pressurepunching device, the variable-stroke reciprocating driving device comprises a rotating shaft, a cam a and a cam b, the turbulent flow filtration flushing device mainly comprises a spoiler, the down-pressing back-flushing device mainly comprises an impeller rotor, and the reciprocating pressure punching device comprises an ejector rod, a pressing plate and a spring. The pulping equipment is characterized in that crushed materials are subjected to combined type crushing and decomposition of variable-stroke reciprocating pressure punching, turbulent flow filtration punching and down-pressing back-flushing. The variable-range reciprocating driving of the pressing plate is realized through the variable-range reciprocating driving device, and the turbulent flow filtration flushing device is used for realizing turbulent flow stirring and filtering impact breaking decomposition of the crushed materials, impact crushing and decomposition of the crushed materials at the bottom end of a materialbarrel are realized through the downward-pressing back-flushing device, and reciprocating stamping and crushing decomposition of the crushed materials can be realized through the reciprocating pressure punching device.

The invention discloses an electric vehicle and a return shift operating device. The return shift operating device is characterized in that by fitting between a W-shaped shift lever operating guide channel and a shift lever in which a return spring is arranged, the shift lever can be stably positioned at a neutral gear when not operated, and the shift lever can reliably return to the neutral gear after the shift lever is turned to a driving gear and a reversing gear and after acting force is removed. The control process is simple, production and development costs are lowered, and the return shift operating device is convenient to popularize and apply.

The invention discloses an automatic return overturning handle. The automatic return overturning handle comprises a handle base and an outer handle structure rotationally connected with the handle base; a handle containing area is formed in the handle base; the outer handle structure comprises a handle swing arm installed in the handle containing area and rotationally connected with the handle base; the outer handle structure comprises an initial horizontal posture, a pressing triggering in-place posture, a welcome position posture and a door opening in-place posture; the outer handle structure further comprises a center rotating shaft penetrating through the connecting position of the operation part and the overturning part of the handle swing arm; and the handle swing arm is rotationally connected with the handle containing area through the center rotating shaft. The automatic return overturning handle can automatically realize the switch of the four states of an automobile handle, namely the initial horizontal posture, the pressing triggering in-place posture, a welcome position posture and the door opening in-place posture, also omits a complex gear structure design, and improves the reliability of the handle structure.

The invention discloses a car seat pedal turnover mechanism capable of regulating in multiple stages and automatically returning. The car seat pedal turnover mechanism capable of regulating in multiple stages and automatically returning consists of a pedal returning mechanism and a multi-stage regulating and locking mechanism, wherein the pedal returning mechanism consists of a first return spring, a first pedal shaft, a first damping gear and a second damping gear; the multi-stage regulating and locking mechanism consists of a second pedal shaft, a locking wheel, a bracket, a left set bar, a left return spring, a left hinge pin, a right set bar, a right return spring, a right hinge pin, a driving block, a driving lever, a second return spring, a hinge pin and a pulling lever; when the foot of a passenger applies downward load to a pedal, the pedal rotates around the pedal shaft; the wedge-shaped locking groove of the locking wheel is meshed with the left set bar and the right set bar, and the pedal is locked; when the passenger does not use the pedal, the driving lever can be pressed to unlock the locking mechanism; meanwhile, an automatic returning mechanism begins to work; and the pedal automatically returns to the original nonuse position.

The invention discloses acontrast agent auxiliary injector for intervention department and an auxiliary supporting assembly thereof, and relates to the technical field of medical instruments, which comprises an injection mechanism, and an auxiliary injector and an auxiliary supporting assembly which are used for moving the injection mechanism; the injection mechanism comprises an injection pipe, an injection head arranged at one end of the injection pipe, a piston installed in the injection pipe in a matched mode and a push rod fixedly connected to one end of the piston. The auxiliary injector and the auxiliary supporting assembly provided by the invention are reasonable in structure, scale marks are arranged on the injection pipe, the injection pipe is a transparent pipe, the injection amount of a contrast agent is convenient to observe, the contrast agent is convenient to inject by arranging the push rod pushing part, operation is convenient, labor is saved, pushing of the push rod to move is stopped by arranging a push rod thrust unit, the elastic force of a limiting spring, a thrust piston and a thrust rod, so that unnecessary pain of the patient caused by excessive liquid in the biliary tract due to the fact that the blood vessel of the patient is blocked and the contrast agent is injected into the body of the patient through mechanical thrust is avoided.