37results about How to "Small structural changes" patented technology

The utility model discloses an electric automobile charging cable which is applied to a charging pile, the lower end of the charging pile is fixedly provided with a charging cable, one end of the charging cable is fixedly provided with a charging gun, and the outer side surface of the charging cable is provided with a buffer mechanism used for protecting the joint of the charging cable and the charging gun. The buffer mechanism comprises a buffer section, a fixing ring, an extension block, a connecting hole and a connecting rope, the buffer section is arranged between the charging cable and the charging gun, and the buffer section is also a part of the charging cable when attention needs to be paid, that is, a common charging cable is only used for determining the mounting position of the fixing ring. According to the utility model, the buffer mechanism is arranged on the outer side of the charging cable aiming at the complex use condition of the common electric vehicle charging cable, and when the charging cable is about to be dragged to the limit, certain buffer can be provided, so that the effect of protecting the connection position of the charger and the charging cable can be achieved.

The utility model relates to a closed hydraulic system, a walking system and a rotary system, which comprise a hydraulic pump component connected with a power source, an oil outlet of the hydraulic pump component is connected with an oil inlet of a hydraulic motor component through a first loop, and an oil outlet of the hydraulic motor component is connected with an oil inlet of the hydraulic pump component through a second loop; a third loop is arranged between the first loop and the second loop, and a proportional valve is arranged on the third loop. The proportional valve is additionally arranged to be communicated with the oil way between the hydraulic pump assembly and the rotary motor, the galloping phenomenon of closed system braking can be rapidly solved, the refitting cost is low, control and debugging are easy, and the matched debugging time is shortened.

An automatic cleaning device for water-based coatings includes a mixing tank (1), a drive motor (2), a base box (3), a feed inlet (4), a water inlet (5), a hollow mixing shaft (6), mixing blades with spray nozzles (7), spray nozzles (7a), a sound insulation and heat preservation layer (8), an annular air duct (9), an air inlet pipe (10), a tank wall spray ring (11), a nozzle (11a), a discharge port (12), a liquid discharge port (13), a water pump (14), a cleaning agent tank (15), a liquid level sensor (16), a control system (17), and a base (18). This device utilizes a rotating mixing shaft and blades to effectively carry the cleaning solution through high-pressure rotary spraying, reducing the consumption of cleaning solvents and water, thus saving resources. The cleaning is thorough, ensuring no residue remains on the tank, mixing shaft, and blades, greatly reducing the risk of cross-contamination between different batches or colors of coatings.

A top liquid cooling energy storage battery box comprises a box body, a battery module, a liquid cooling plate and a water inlet and outlet component, the box body comprises a lower box body and a box cover, the top of the lower box body is open, the battery module is fixed in the lower box body, the box cover covers the top of the lower box body, and insulating sheets are fixed on the inner side of the bottom surface of the lower box body and the inner side of the box cover; the liquid cooling plate is located at the top end of the battery module, the battery module comprises a plurality of battery monomers and a busbar located at the top end of the battery monomers, the surface of the liquid cooling plate is coated with an insulating material, a heat-conducting structural adhesive is filled between the liquid cooling plate and the busbar, the liquid cooling plate is connected with a water inlet and outlet part, and the water inlet and outlet part is used for inlet and outlet of cooling liquid. According to the utility model, the busbar can be directly cooled, so that cold energy is transferred to the whole battery through the tabs and the current collector, and the temperature and temperature difference of the battery are quickly reduced; the utility model belongs to the technical field of energy storage batteries.

The present application belongs to the field of battery material technology, and specifically relates to a dry high-load composite positive electrode sheet with gradient distribution and a preparation method thereof, wherein the conductive carbon material, multi-size oxide solid electrolyte particles, and positive electrode active material are pre-mixed and dispersed at high speed to obtain a first powder; a binder is added to the first powder, and a low-temperature and low-speed dispersion treatment is performed to obtain a second powder; the second powder is subjected to a heat preservation treatment to obtain a pre-fiberized second powder; the binder is fiberized and other components are uniformly dispersed to form a third powder; the third powder is subjected to a multi-stage hot rolling treatment to obtain a first electrode membrane; steps 1-5 are repeated to adjust the component ratio to prepare a second electrode membrane; the first and second electrode membranes and the carbon-coated aluminum foil current collector are stacked and rolled in sequence to obtain a high-load composite positive electrode sheet with gradient distribution. The present application realizes gradient distribution preparation, improves the lithium ion diffusion rate, uniform electric field distribution, improves the rate performance of thick electrodes and the adhesion of the electrode sheet, and prevents shedding.

The present application relates to a kind of multifunctional water supply equipment, multifunctional water supply equipment includes: water supply host, it includes host shell and water supply tank;Functional water machine, it includes functional water tank and anti-overflow component, anti-overflow component includes balance chamber;Functional water machine is detachably connected to water supply host, when functional water machine is connected to water supply host, water supply tank supplies water for functional water tank;Wherein, balance chamber is communicated with functional water tank, when functional water machine is connected to water supply host, the highest point of the water space of balance chamber, no less than the highest point of the water space of functional water tank, and no less than the highest water level of water supply tank, to make balance chamber can prevent functional water tank overflow.The multifunctional water supply equipment of the present application, water supply host is used in cooperation with functional water machine, water function is richer, integrated effect is good and cost is low, in addition, anti-overflow component is additionally provided in functional water machine, to prevent functional water tank overflow, use is safer.

The invention discloses a combined structure of a push plate and a magnetic steel assembly and a magnetic latching relay, and belongs to the technical field of electromagnetic magnetic latching relays. The combined structure comprises a pushing plate and a magnetic steel assembly. A cylindrical clamping part is arranged at the tail part of the pushing plate, and at least one local thinning area is processed in the thickness direction of the pushing plate. And the top end of the magnetic steel assembly is provided with a clamping groove with an opening part with narrowed width. The local thinning area is aligned with and penetrates through the opening part to complete assembly, the radial size of the clamping part in the non-thinning area is larger than the width of the opening part, and the clamping part can rotate in the clamping groove and cannot be disengaged after being installed. The problem that the push plate is easy to fall off from the magnetic steel assembly is solved, and the push plate has the advantages of being easy and convenient to assemble, reliable in connection and long in service life.

The invention discloses a nickel-loaded hierarchical porous SAPO-34 catalyst and a preparation method and application thereof.The method comprises the steps that an aluminum source is added into a water solution of a phosphorus source, stirring is conducted, then a template agent and a silicon source are added, stirring and uniform mixing are conducted, and a precursor solution is prepared; carrying out hydrothermal reaction treatment on the precursor solution, and calcining a product to prepare an original SAPO-34 carrier; the preparation method comprises the following steps: putting an original SAPO-34 carrier into an organic acid solution, stirring, and drying and calcining to obtain an acid-treated SAPO-34 carrier; and adding the SAPO-34 carrier subjected to acid treatment into a Ni (NO3) 2 solution, fully stirring and uniformly mixing, drying, and carrying out heat treatment to obtain the nickel-loaded hierarchical porous SAPO-34 catalyst. The method is simple in process and reasonable in design, the catalyst has an excellent hierarchical porous structure and appropriate surface acidity, the reaction activity and selectivity of the catalyst are effectively improved, and the reaction energy efficiency is effectively improved.

The invention discloses a heat dissipation micro-channel and a heat dissipation device. The technical problem that stable operation of a cooled part is affected due to the fact that an existing micro-channel heat dissipation device has a large temperature gradient is solved. The micro-channel heat dissipation device comprises a micro-channel for circulation of a cooling working medium, the heat exchange area of the upstream of the micro-channel is smaller than that of the downstream of the micro-channel, and the micro-channel is arranged between a micro-channel bottom plate and a micro-channel cover plate to form the heat dissipation device. By carrying out material reduction treatment on the upstream of the micro-channel, the heat exchange area from the upstream of the micro-channel to the downstream of the micro-channel is increased in a gradient manner, the heat exchange performance of the downstream of the micro-channel is enhanced, the hot-spot temperature is reduced, the uniformity of the surface temperature of a cooled part is improved, and the deformation and warping risks of the cooled part are reduced; the reliability and the service life of a cooled part are improved; by increasing the upstream sectional area of the micro-channel, the resistance of the cooling working medium flowing along the micro-channel is reduced, the pressure drop and the pumping work required when the cooling working medium flows are reduced, and the energy consumption of the cooled part is further reduced.

The invention relates to a wiper blade (1), in particular for a motor vehicle, comprising an elongate main body (6) and a wiper strip (7) arranged on the main body (6), at least one cavity (8) being provided on the main body (6), said cavity extending along a longitudinal extension (3) of the main body (6). According to the invention, at least one hot air inlet (9) is provided, through which hot air can be conducted into the at least one cavity (8) during operation, and at least one hot air outlet (10, 11, 12, 13) is provided between the base body (6) and the wiper strip (7).

The utility model discloses a refrigerator which comprises a refrigerator body, an inner container, a door body, a container and a magnetic generation assembly. The container comprises a container body and a drawer which are arranged in the refrigeration chamber, the container body forms a containing cavity with an opening in the front side, and the drawer is arranged in the containing cavity in a drawable mode and can open and close the opening in the front side of the containing cavity; a reinforcing rib layer is arranged on the outer side wall of the container body and comprises a plurality of transverse ribs and vertical ribs, the transverse ribs and the vertical ribs are arranged in a crossed mode to form a net structure with a plurality of grids, and clamping holes are formed in at least part of the side walls of the grids; the magnetic generation assembly comprises a shell and a magnetic part, the edge of the shell is provided with a buckle capable of being clamped into the clamping hole so that the shell can be buckled to the reinforcing rib layer, the shell and the reinforcing rib layer can form an installation cavity in an enclosing mode, the magnetic part is contained in the installation cavity, and the magnetic part is configured to enable the containing cavity to have a magnetic field. According to the refrigerator, the technical problems that a magnetic part is inconvenient to arrange, later dismounting and maintenance are not facilitated, and the fresh-keeping effect is poor can be solved.

The utility model discloses a kind of double-effect contrast defocus microlens sheet, including substrate, the substrate both sides include outer side and inner side, the substrate includes by the curvatures of outer side and inner side jointly constituted refractive area of correcting vision;The outer side surface has regularly and uniformly distributed miniature convex lens, the center of the miniature convex lens is equipped with myopia refractive correction area;The inner side is processed into annular scattering area with scattering effect, the center of the annular scattering area is center visible area without scattering effect;The center of the myopia refractive correction area and center visible area coincides with the geometric center of substrate. Advantageous effect: the utility model can achieve the premise that lens basic visible effect, the function of two can control myopia degree deepening principle is stacked in the mode of double myopia prevention and control effect.

The invention provides a potassium ion battery positive electrode material and a preparation method thereof, the molecular formula of the potassium ion battery positive electrode material is NaxCoyAzO2, x, y and z are atomic numbers, and A is a transition metal element; wherein 0.5 < = x < = 1, 0.6 < = y < = 0.9, and 0.1 < = z < = 0.4. The preparation method of the positive electrode material of the potassium ion battery comprises the following steps: (1) placing cobalt salt, manganese salt or nickel salt, sodium salt and a solvent in a ball milling tank for ball milling to obtain viscous powder; (2) drying the viscous powder to obtain mixed metal powder; and (3) sintering the material to obtain the positive electrode material. The potassium ion battery positive electrode material provided by the invention can inhibit multiple phase changes during charging and discharging, reduce structural changes and keep an electrochemical structure stable.

The present application relates to the technical field of voltage and visual detection, and discloses an electric arc furnace conductive cross arm integrating arc voltage and visual working condition detection, comprising: a conductive cross arm body, including a cross arm main beam, a conductive copper bar arranged on the cross arm main beam, and an electrode holder arranged at one end of the conductive copper bar; a voltage detection assembly, including an integrated voltage detection module arranged on the electrode holder, and a floating adaptive power taking mechanism arranged between the conductive copper bar and the integrated voltage detection module; a visual detection assembly; and a water-cooled protection assembly. The present application integrates arc voltage detection and visual working condition detection functions, adds a high-temperature-resistant visual acquisition unit on the basis of original voltage acquisition, synchronously acquires arc voltage parameters and visual images of the electrode and the molten pool area, and verifies multi-dimensional data linkage, thereby greatly improving the comprehensiveness and accuracy of electric arc furnace working condition detection, resisting high-temperature radiation and strong electromagnetic interference at the same time, and guaranteeing long-term stable operation of the double detection systems.

The invention provides an air conditioner indoor unit which comprises an air inlet, a fan, an evaporator and a complete machine electric control box, air sucked in from the air inlet is blown out after being subjected to heat exchange through the evaporator under driving of the fan, the complete machine electric control box is located on one side of the evaporator in the length direction, a pulse sterilization assembly is arranged in the air conditioner indoor unit, and the pulse sterilization assembly is connected with the complete machine electric control box. The pulse sterilization assembly comprises a pulse ultraviolet light module and a pulse electric control module; the pulse ultraviolet light module comprises a pulse sterilization lamp, the pulse sterilization lamp is located on the side, away from the draught fan, of the evaporator, pulse light emitted by the pulse sterilization lamp at least irradiates the evaporator, the pulse ultraviolet light module is installed on the evaporator, or the distance between the pulse ultraviolet light module and the evaporator is smaller than 8 mm. According to the indoor unit of the air conditioner, the internal structure of the air conditioner can be fully utilized, the evaporator and the air duct in the air conditioner can be thoroughly sterilized without large structural adjustment on the interior of the air conditioner, the structure is compact, and production and processing are convenient.

The application discloses a three-dimensional knife library, an automatic powder printing system and a scraper replacing method, and belongs to the technical field of additive manufacturing. The system comprises a forming chamber and a scraper positioning assembly arranged in the forming chamber. The scraper positioning assembly is connected with the scraper in a lockable mode and is used for leveling the scraper. The forming chamber is provided with a sealable scraper replacing opening and is communicated with the three-dimensional knife library through the scraper replacing opening. The three-dimensional knife library is automatically controlled to realize the recycling of the replaced scraper and the installation of a new scraper. The scraper positioning assembly in the system is used for automatically leveling the scraper, and the three-dimensional knife library is used for automatically recycling the replaced scraper and automatically installing the new scraper, so that the problem that the scraper cannot be automatically replaced and leveled in the prior art is solved.

The invention provides a vehicle air conditioning box, a vehicle air conditioning system and a control method thereof.The vehicle air conditioning box comprises a box body shell, the box body shell is provided with an inner space, a main heat exchange air duct is formed in the inner space, and an air inlet and an air supply outlet are formed in the box body shell; an in-vehicle heat exchanger and an in-vehicle fan corresponding to the in-vehicle heat exchanger are arranged in the main heat exchange air duct, an inlet of the air return duct is controllably communicated with an air outlet side space of the in-vehicle heat exchanger, and an outlet of the air return duct is communicated with an air inlet side space of the in-vehicle heat exchanger. The air inlet side space and the air outlet side space are both located in the main heat exchange air duct. The air return duct is arranged on the air conditioning box, so that part of airflow subjected to heat exchange with the in-vehicle heat exchanger can be guided into the air inlet side space of the in-vehicle heat exchanger to enter the in-vehicle heat exchanger again for secondary heat exchange, and it is guaranteed that the air outlet temperature of the air conditioning system can reach the temperature value set by a user; and the use comfort and the satisfaction degree of the user are improved.

The invention discloses a preparation method and application of an oxide glass electrode of a lithium ion capacitor, and belongs to the technical field of oxide glass electrodes, and the preparation method of the oxide glass mainly comprises the following steps: weighing glass raw materials according to glass composition, uniformly mixing, heating, melting, cooling and annealing, grinding the annealed glass into glass powder, and preparing for preparing an electrode plate; the preparation method comprises the following steps: weighing an active substance, a conductive agent and a binder in proportion, mixing in a ball milling tank, and dropwise adding a proper amount of dispersant for ball milling; blade-coating the slurry on a metal aluminum foil current collector for drying; and cutting the dried pole piece into electrode slices by using a slicing machine to prepare for assembling the lithium ion capacitor. According to the preparation method and application of the oxide glass electrode of the lithium ion capacitor, the obtained oxide glass electrode shows excellent electrochemical performance, meanwhile, the production process is simple, no pollution is caused to the environment, good application prospects are achieved, and more choices are provided for electrode materials of the lithium ion capacitor.

The application relates to an RV reducer with an output locking function, which comprises an RV reducer body, an output locking disc, an input shaft limiting screw, a motor connecting shaft and an elastic component. The output locking disc is coaxially fixed outside an output disc of the RV reducer body. An input shaft of the RV reducer body is installed in the reducer body in a displaceable manner along an axial direction. An installation hole is arranged at a power input end of the input shaft, and an outer spline is arranged at the other end. The input shaft limiting screw is connected with a self-locking threaded hole on the output locking disc, and the elastic component is arranged in the installation hole. The output shaft limiting screw and the elastic component are matched to realize axial positioning of the input shaft. The inner end of the motor connecting shaft is drivingly connected with the power input end. When the RV reducer is in a running state, the outer spline of the input shaft is in a disengaged state with a spline hole section of the output locking disc. When the RV reducer is in a locking state, the outer spline of the input shaft is in a matched state with the spline hole section of the output locking disc. The application realizes self-locking of the reducer.

The invention discloses a sodium-rich polyanion positive electrode material and a preparation method thereof. The structural general formula of the positive electrode material is NazMnTi (1-x-y) MxAy (PO4) 3, z is greater than 3 and less than or equal to 4, x is greater than 0 and less than 1, and y is greater than 0 and less than or equal to 0.33; m is one or more than two of metal elements Al, V, Cr, Mn, Fe, Ni, Cu and Zn, and A is one or more than two of alkali metal or alkaline earth metal elements Li, Na, K, Mg and Ca. The sodium-rich polyanion positive electrode material and the preparation method thereof have the characteristics of excellent rate capability, cycling stability and high gram volume.

The invention discloses a method for suppressing coupling interference of a communication line of a high-voltage wiring harness of an electric vehicle, and the method comprises the steps: constructing an interference reference signal and a communication interference observation signal based on a current sampling signal of the high-voltage wiring harness and a receiving end voltage monitoring signal of the communication line, and generating an interference frequency band configuration parameter in combination with short-time Fourier transform, a cancellation signal is output under the constraint least mean square adaptive framework and is superposed and fed back through a cancellation injection network, so that the coupling interference voltage is constrained by a suppression threshold value when the interference level changes; the problem that it is difficult to carry out broadband and working condition self-adaptive suppression on a high-voltage wire harness communication line coupling channel in an existing electric vehicle noise elimination technology and an active electromagnetic interference filtering technology is effectively solved.

The application discloses a self-cleaning structure of a washing machine and a use method, relates to the technical field of washing machine cleaning, and comprises a washing machine outer drum, an inner drum and a rotating shaft. A plurality of through holes are arranged on the outer drum wall, and a fan-shaped nozzle type spray head is arranged outside each through hole. The jet flow of the spray head passes through the through hole and is directed to the interlayer between the inner drum and the outer drum, and the inner drum tripod dead angle is directionally sprayed. A cleaning agent box, a cleaning agent premixing box, a booster pump and an independent water delivery pipeline are arranged in the washing machine body. The water inlet is communicated with the premixing box, and the premixing box outlet is connected with each spray head through the booster pump. During use, the external water and the cleaning agent are mixed in the premixing box according to a proportion, and the mixture is sprayed into the interlayer by the spray head after being pressurized by the high-pressure pump, so that 360-degree cleaning is realized in cooperation with the self-rotation of the inner drum. The structure adopts a two-stage self-cleaning mode combining chemical dissolution and physical flushing, can effectively remove the residual washing powder and chemical deposits such as scale that are not melted on the tripod, and prevents the spray head from being blocked.

The utility model discloses an outdoor AGV tractor steering axle structure which comprises an axle body, two hubs, two steering knuckles, an oil cylinder assembly, two brake discs and two brake calipers, the oil cylinder assembly and the steering knuckles on the left side and the right side are in rotating connection, the steering knuckles are matched with the axle body through tapered roller bearings, and the two hubs are arranged on the axle body. The steering knuckle and the connecting shaft are matched and fixed through a screw, the steering angle sensor is detachably installed on the upper surface of the axle body, and a rotor of the angle sensor and the upper end of the connecting shaft form synchronous movement through a transmission assembly. Due to the fact that the connecting shaft and the steering knuckle are fixed through the screw, the steering angle sensor is detachably installed on the upper surface of the axle body, and the rotor of the angle sensor and the upper end of the connecting shaft form synchronous movement through the transmission assembly, the design reduces the structural change of the whole axle, guarantees the overall structure of the axle, optimizes the assembling mode, improves the assembling efficiency and reduces the manufacturing cost. And the whole structure is more compact, and the occupied space is reduced.

The present invention relates to the technical field of single crystal furnaces, and provides an anti-rod-falling protection device and system, and a single crystal furnace, the device comprises: a clamping mechanism suitable for being arranged on an isolation valve in the single crystal furnace, the isolation valve is provided with a through hole for a crystal rod to pass through; the clamping mechanism is provided with at least two clamping parts distributed on the two opposite sides of the through hole, and at least one clamping part can move close to the through hole. Through the arrangement, the original structure of the single crystal furnace is slightly changed, and the sealing difficulty is not increased; the influence on the strength, rigidity and other properties of the single crystal furnace is effectively avoided; and the actuating mechanism is arranged outside the single crystal furnace, so that the sealing difficulty is not additionally increased, the influence of high temperature in the furnace in the working process is avoided, and the operation reliability is ensured.

The utility model discloses a double-water-circulation constant-temperature and constant-humidity cabinet which comprises a cabinet body, a refrigerating and heating system and a humidifying system are arranged in the cabinet body, a submersible heater is arranged in a water tank, a water temperature probe is arranged in the water tank, and a water tank evaporator is located in the water tank. An air temperature probe is arranged in the cabinet body; the air evaporator is located in the air duct, the air duct is provided with an air circulating fan, and the refrigeration constant-temperature water pump is communicated with a pipeline of the air evaporator; the refrigeration constant-temperature water pump is positioned in the water tank; the water temperature probe, the submersible heater, the air temperature probe and the refrigeration constant-temperature water pump are electrically connected with the microcomputer power panel, and a microcomputer control module in the microcomputer power panel controls the submersible heater, the air circulating fan, the refrigeration constant-temperature water pump and the compressor to work. The temperature rise temperature fluctuation is small, the temperature reduction temperature fluctuation is small, the constant-temperature and constant-humidity process with small temperature fluctuation can be automatically achieved, and the temperature in the cabinet can be accurately controlled. And the dehumidification efficiency is improved. The structure change is small.

The utility model discloses a kind of adjustable steam extraction devices for adjusting extraction steam turbine, belong to the field of steam turbine in electric power energy industry.The device includes the intermediate steam chamber and cylinder outer pipeline system in steam turbine cylinder;The intermediate steam chamber is composed of semicircular steam chamber upper half and steam chamber lower half, the inside of steam chamber lower half is equipped with steam chamber, the bottom of steam chamber is equipped with inlet steam guide pipe, the axial steam outlet side of steam chamber is equipped with several vane nozzle steam channel;The steam chamber upper half is baffle in axial steam outlet side;The cylinder outer pipeline system includes the pipeline of intercommunication intermediate exhaust steam chamber and intermediate steam chamber, butterfly valve is equipped on pipeline, part of steam body discharged from intermediate exhaust steam chamber is transported to intermediate steam chamber by the cooperation of pipeline and butterfly valve.The utility model has good steam tightness, high steam control precision, simple structure.

This invention provides a refrigerator. It includes a cabinet, a door, a refrigeration system, and a heat source. The refrigeration system includes a cabinet side portion, a door side portion, a first connecting pipe, and a second connecting pipe. The cabinet side portion is installed in the cabinet and has a compressor. The door side portion is installed in the door and has a first throttling device and a first evaporator. The inlet of the first evaporator is connected to the outlet of the first throttling device. One end of the first connecting pipe and one end of the second connecting pipe are respectively connected to the cabinet side portion at two locations on the cabinet side portion. The other end of the first connecting pipe is connected to the inlet of the first throttling device, and the other end of the second connecting pipe is connected to the outlet of the first evaporator. The heat source is configured to heat part or all of the first connecting pipe. Heating the first connecting pipe with the heat source reduces the risk of condensation on the exposed portions of the high / low pressure connecting hoses.

The utility model discloses a double-track blank insertion lifting mechanism of a bottle blowing machine, and relates to the technical field of bottle blowing machines. The double-track blank insertion lifting mechanism comprises a cam lifting track and a blank insertion device, an inner track and an outer track are arranged on the cam lifting track; the blank inserting device comprises a bearing support concentric with the sliding rail, a rotary support is installed on the bearing support, the upper side of the rotary support is connected with a main star wheel cylinder, and a lifting guide fork assembly A and a lifting guide fork assembly B which are matched with the inner rail and the outer rail respectively are arranged on the main star wheel cylinder. The inner track and the outer track are arranged, the two sets of lifting guide fork assemblies matched with the inner track and the outer track respectively are arranged at the ends of the main star wheel cylinder in a matched mode, on one hand, the number of the lifting guide assemblies can be reduced, the size of the star wheel cylinder is reduced, and cost is reduced, and on the other hand, bearing idler wheels matched with the track faces are enlarged. And meanwhile, the structural change is small, and the modifiability is high.

The invention relates to the technical field of agricultural equipment, in particular to the technical field of seeding machines, in particular to a seeding monitoring system and method of a seeding machine, solves the problems of inaccurate seed leakage monitoring, high cost and poor applicability in the prior art, and is simple in structure, controllable in cost, capable of accurately identifying seed leakage and high in practicability. A first monitoring unit and a second monitoring unit are arranged on the inner side of the top of the shell, the first monitoring unit and the second monitoring unit form a first monitoring point and a second monitoring point on the transmission track of the seed spoon respectively, the first monitoring point is located at the upstream of the seed spoon separation area, and the second monitoring point is located at the downstream of the seed spoon separation area; the distance between the first monitoring point and the second monitoring point is smaller than the distance between the seed spoons.