58results about How to "Increase path length" patented technology

The invention relates to a paddy field weeding robot path planning optimization method and device, equipment and a medium, and the method comprises the steps: determining the path direction of a shortest barrier-free path based on a preset path direction judgment strategy according to a first barrier-free path set and a corresponding first starting and ending point set, determining a second barrier-free path set, a second starting and ending point set corresponding to the second barrier-free path set, and a starting point and an ending point of each section of obstacle avoidance path; determining a route map according to sampling point data and a communication radius based on a PRM algorithm introduced with an artificial potential field method, and searching a shortest obstacle avoidance path connecting a starting point and an ending point of each section of obstacle avoidance path in the route map by adopting an improved A * graph search algorithm, and sequentially connecting the shortest barrier-free path and the shortest obstacle avoidance path of which the path direction is determined in the second barrier-free path set so as to determine an optimal weeding operation path. According to the invention, effective obstacle avoidance and shortest obstacle avoidance path planning can be realized.

The invention provides a power device with improved short-circuit current capability and a manufacturing method thereof. The power device comprises at least one cell. The cell is divided into two half cells along the width direction of the cell. Each half cell comprises a drift region, a source doped region and a source metal connected with the source doped region. The source doped region includes a source region and a plurality of contact regions. The source region comprises at least one first extension region, the plurality of contact regions are arranged in the length direction of the cell, and any two adjacent contact regions are spaced by the first extension region. And configuring the connection state of the source metal and the source doped region to be local connection of the source metal of at least one half-cell and at least one first extension region. According to the power device, the on-resistance is increased by prolonging the path of current flowing through the source region, and the short-circuit current capability is improved. The gate structures of part of the cells of the power device are adjusted, so that the short-circuit current capability and the conduction current capability of the device are further balanced. The manufacturing method is simple in steps.

The invention provides a plant protection spray head and a plant protection spraying device. The plant protection spray head comprises a shell, an isolation cylinder is coaxially sleeved with the shell, and an inner cavity with the left end open and the right end closed is formed between the shell and the isolation cylinder; a jet flow cavity with the right end open and the left end closed is formed in the isolation cylinder. A plurality of jet flow holes used for communicating the inner cavity with the jet flow cavity are formed in the barrel wall of the isolation barrel, and a set angle is formed between the jet flow holes and the axis of the inner cavity. By changing the internal structure of the plant protection sprayer, the liquid medicine flowing condition is improved, energy loss is reduced, and the liquid medicine utilization rate is increased. The plant protection spraying device can flexibly adjust the angle and direction of the spraying head according to the forms and growth stages of different crops, the utilization rate of pesticide is increased, and environmental pollution is reduced.

The invention discloses a mobile robot path planning method based on JPS. The method comprises the following steps: modifying a heuristic function of an algorithm; setting forced neighbor determination, and obtaining a path by using an improved JPS calculation method; and optimizing the calculated path by using a path detection algorithm, and optimizing the inflection points of the corners by using a Durbin curve. The problems of time efficiency, path planning credibility and the like of robot path planning calculation are researched, an A * algorithm and a JPS algorithm are disassembled, the algorithm conditions of the A * algorithm and the JPS algorithm are organically combined, the advantages of the A * algorithm and the JPS algorithm are selected through internal problems of the algorithms, and a new algorithm is formed through fusion. And checking whether the path condition can be optimized to reduce the path points or shorten the path or not by using a path detection algorithm, and improving the path efficiency, reliability and path length by using the path detection algorithm.

The invention discloses zip-top can one-way air conveying equipment, and relates to the technical field of zip-top can conveying equipment. The guide part is mounted on the machine body; the two channel plates are installed on the machine body, oppositely arranged and located below the guide part, and the ends of the zip-top cans are opposite to the channel plates; the conveying path is located in a space formed by the two channel plates and used for single-row movement of the zip-top cans, and first air holes inclining in the conveying direction of the conveying path are formed in the positions, right facing the conveying path, of the channel plates; the air boxes are installed on the machine body, located on the two sides of the channel plate, communicated with the fan air outlet pipeline and used for blowing air to the first air holes; a second air hole inclining upwards is formed in the position, right opposite to the guide part, of the middle of the channel plate, and the air box communicates with the second air hole to blow the zip-top cans in the second air hole upwards. And the conveying path passes above the second air hole. The ring-pull can air conveying line has the function of converting multiple paths into a single path, and the conveying efficiency and the conveying quality are improved.

The invention belongs to the technical field of path planning and robot motion planning, and particularly relates to a multi-strategy fusion improved RRT * sampling planning method and device and a storage medium, and the method comprises the steps: constructing a dual-search tree through a starting point and a target point in a three-dimensional working space, and selecting a to-be-expanded search tree through a random mode; halton-Bridge mixed sampling is adopted to generate sampling points, so that the global coverage uniformity is improved, and the narrow channel sampling capability is enhanced; calculating the dynamic step length of the exponential decay based on the local obstacle proportion; adopting a hierarchical guidance expansion strategy, preferentially expanding towards a target, introducing an improved artificial potential field to guide expansion when the expansion fails, and taking the bottom with random expansion; performing RRT * neighborhood father node reselection and reconnection optimization on the new node; greedy pruning, self-adaptive interpolation and cubic B-spline smoothing are carried out on a path after the double trees are connected, and an executable smoothing track is output; according to the scheme, planning efficiency, success rate and path quality are improved.

This invention discloses a high-transparency, high-haze polypropylene material and its preparation method. The material is prepared by mass ratios of 93.2-98 parts polypropylene, 1-4 parts light diffusing agent, 0.2-0.6 parts α-nucleating agent, 0.2-0.6 parts β-nucleating agent, 0.2-0.4 parts antioxidant, 0.2-0.6 parts dispersant, and 0.2-0.6 parts light stabilizer. The nucleating agent is a compound of α-nucleating agent and β-nucleating agent in a mass ratio of 2-5:2-6. By adding specific proportions of α-nucleating agent and β-nucleating agent, this invention induces the polypropylene molecular chains to arrange themselves in a specific manner, thereby forming different spherical (α-crystal form) and rod-shaped (β-crystal form) crystal structures. This causes optical fibers that pass through the material surface and into the matrix to undergo multiple refractions before penetrating the matrix, thus increasing the path length of light within the material and enabling the material to maintain high transparency while exhibiting higher haze.

The utility model relates to the technical field of centrifugal fans, and discloses a multistage noise reduction flow guide structure of a centrifugal fan, which comprises a centrifugal fan main body, the inner wall of the centrifugal fan main body is fixedly connected with sound absorption cotton, one end of the centrifugal fan main body is fixedly connected with a flow guide cylinder, and the inner wall of the flow guide cylinder is fixedly connected with a noise reduction component. A dustproof assembly is arranged at one end of the guide cylinder, the noise reduction assembly comprises a double-layer micro-perforated plate arranged on the inner wall of the guide cylinder, a honeycomb metal guide plate is fixedly connected into the double-layer micro-perforated plate, and the dustproof assembly comprises a mounting plate arranged at one end of the guide cylinder. According to the multi-stage noise reduction flow guide structure of the centrifugal fan, by arranging the sound absorption cotton, the reinforcing layer and the noise reduction assembly, the purpose of multi-stage noise reduction is achieved, the situation that when airflow enters the air inlet, vortexes can be formed, generated airflow turbulence collides with the fan in a large amount, and large noise is generated is avoided, and sound pollution generated by the centrifugal fan can be improved.

The utility model relates to a northern heating drainage chassis anti-freezing structure which comprises an air conditioning system and a drainage chassis, the air conditioning system comprises a compressor, a condenser, an expansion valve and an evaporator, the drainage chassis is arranged at the bottom of the condenser, a drainage opening is formed in the drainage chassis, and the drainage chassis is used for draining condensate water generated in the defrosting process. A refrigerant pipeline between the expansion valve and the evaporator penetrates through the drainage base plate, when the air conditioning system conducts heating, a refrigerant forms medium-temperature and medium-pressure liquid after passing through the expansion valve, and the medium-temperature and medium-pressure liquid passes through the drainage base plate so that the temperature of the drainage base plate can be increased. When the air conditioning system heats, the medium-temperature medium-pressure liquid refrigerant passing through the expansion valve flows through the drainage chassis, so that the temperature of the drainage chassis is increased. Therefore, the condensed water on the base plate cannot be frozen due to low temperature, so that the condensed water can be smoothly discharged.

The invention relates to the technical field of anti-corrosion pigments, in particular to a long-acting anti-corrosion pigment and a preparation method thereof. The long-acting anti-corrosion pigment is prepared from the following raw materials in parts by weight: 40 to 60 parts of attapulgite, 10 to 30 parts of zinc phytate, 5 to 10 parts of zirconium oxide, 1 to 3 parts of silane coupling agent, 8 to 15 parts of lanthanum ricinoleate and 5 to 10 parts of modified Ti3C2Tx nanosheet. The long-acting anti-corrosion pigment disclosed by the invention is prepared from the following components: lanthanum ricinoleate, modified Ti < 3 > C < 2 > T < x > nanosheets and the like. The lanthanum ricinoleate and the modified Ti3C2Tx nanosheet can effectively improve the corrosion resistance of the pigment. The obtained pigment has excellent corrosion resistance, and experimental results show that the acid resistance of the obtained pigment is larger than 36 d, the alkali resistance of the obtained pigment is larger than 32 d, the salt water resistance of the obtained pigment is larger than 45 d, and the salt fog resistance of the obtained pigment is larger than 20 d.

The utility model discloses an aeration device of an aeration tank, which relates to the technical field of heat exchangers and comprises an aeration tank, a scattering component, an interference component and an aeration pipeline are arranged in the aeration tank, and the scattering component, the interference component and the aeration pipeline are sequentially distributed in the aeration tank from high to low; a plurality of lifting assemblies are arranged at the upper port of the aeration tank; the scattering assembly comprises a plurality of mounting plates, and a plurality of turbines are arranged on the bottom surfaces of the mounting plates; the interference assembly comprises a plurality of baffles, and every two baffles are arranged on the two sides of the lower portion of one installation plate. The bubble removing device has the beneficial effects that the rising path length of bubbles in the aeration tank is prolonged through the baffle, the contact time of the bubbles and a water body is prolonged, and meanwhile, the bubbles are scattered by utilizing the turbine, so that the bubbles are reduced, the contact area of the bubbles and the water body is increased, and a bubble removing effect is achieved; and secondly, the scattering assembly, the interference assembly and the aeration pipeline are sequentially pulled out of the aeration tank by utilizing the lifting assembly, and the damaged or blocked aeration pipe can be maintained without draining sewage.

The invention belongs to the field of waste hard alloy recovery treatment, and particularly relates to a waste WC-Co hard alloy microwave oxidizing roasting method, the waste WC-Co hard alloy with the particle size below 150 mu m is subjected to oxidizing roasting under the assistance of microwaves, an oxidation product containing tungsten oxide and cobalt tungstate is obtained, the oxidizing roasting temperature is 400 DEG C or above, the oxidizing time is 30 min or above, and the oxidizing product containing tungsten oxide and cobalt tungstate is obtained. And the power of the microwave is more than 600W. According to the method, the waste WC-Co hard alloy is heated for oxidizing roasting by innovatively adopting microwave selective heating, so that the oxidation effect can be remarkably improved based on a brand new mechanism.

The utility model discloses an axial flow water turbine water guide mechanism which comprises an upper ring seat (1) and a lower ring seat (2), a plurality of guide vanes (3) are arranged between the upper ring seat (1) and the lower ring seat (2), rotating shafts (4) are arranged in the middles of the upper ends and the lower ends of the guide vanes (3), driving rings (5) are connected to the upper ring seat (1) in a rotating mode, servomotors (6) are connected to the driving rings (5), and the servomotors (6) are connected to the driving rings (5). The upper ends of the rotating shafts (4) are connected with the driving ring (5) through a first connecting rod (7) and a second connecting rod (8), and a linkage mechanism connected with the lower ends of all the rotating shafts (4) is arranged at the bottom of the lower ring seat (2); the linkage mechanism comprises a plurality of adapter plates (9), the adapter plates (9) are fixed to the lower ends of the rotating shafts (4) respectively, third connecting rods (10) are arranged between the adjacent adapter plates (9), and the third connecting rods (10) are hinged to the adapter plates (9). The utility model has the advantage of low maintenance frequency.

The utility model relates to the technical field of kitchen appliances, and discloses a range hood which comprises an exhaust fume collecting hood and an oil cup arranged at the bottom of the exhaust fume collecting hood, in the length direction of the exhaust fume collecting hood, the bottom of the exhaust fume collecting hood is connected with the oil cup through a detachable structure; a notch communicated with the oil cup is formed in the rear side of the bottom of the exhaust fume collecting hood, the notch and the detachable structure are arranged in a spaced mode, and a blocking part is further arranged at the bottom of the exhaust fume collecting hood and located between the notch and the detachable structure. The blocking part is arranged at the bottom of the exhaust fume collecting hood, so that oil stains at the notch can be prevented from directly flowing to the area where the detachable structure is located along the bottom of the exhaust fume collecting hood in the oil discharge process, the detachable structure can be prevented from being polluted by the oil stains, and the clean state of the area where the detachable structure is located is maintained.

This application provides a sound amplification device based on M-H metamaterials and a sound propagation method utilizing them. The sound amplification device includes at least an upper shell, a lower shell, and a waveguide located between the upper and lower shells. The waveguide is made of Mie metamaterials. The waveguide includes an outer wall with multiple sound wave inlets. The upper shell, lower shell, and outer wall enclose and form a waveguide space. A through-hole is provided within the waveguide space, penetrating the waveguide and the upper shell, serving as the sound wave outlet in the sound amplification device. The waveguide includes multiple fan-shaped sections arranged circumferentially around the through-hole. A waveguide channel is formed between adjacent fan-shaped sections, connecting the sound wave outlet and the sound wave inlets. The control current of the sound source is determined by the size of the sound amplification device and the scattering distribution of the sound amplification device under different resonance modes. The sound energy level at the sound wave outlet is higher than that at the sound source, and the propagation direction has an angle. By determining the control current at the sound source that best matches the size of the sound amplification device, low-cost, high-precision, and widely applicable sound propagation control is achieved.

The invention discloses a pipeline hoisting device, relates to the technical field of pipeline hoisting, and solves the problem that the efficiency of operations such as pipeline laying is low due to the fact that a large amount of time needs to be consumed for hoisting a pipeline. And meanwhile, the problems that the pipeline is not convenient enough to build and hoist, and different building and laying requirements of the pipeline are difficult to meet are solved. The pipeline hoisting device comprises two sets of foundation bottom plates, a sliding rail hoisting assembly, an automatic hoisting auxiliary conveying mechanism and a lifting hook, and the sliding rail hoisting assembly is installed at the tops of the two sets of foundation bottom plates through screws. According to the hoisting device, multiple sets of steel pipe pipelines can be hoisted at a time, and the building and laying efficiency of the steel pipe pipelines is improved. And meanwhile, when the construction and laying operation of the steel pipe pipeline is actually carried out, the construction and laying operation of the steel pipe pipeline in the vertical direction and the horizontal direction can be carried out according to requirements, different construction and laying requirements of the steel pipe pipeline are met, and the practicability is high.

The utility model discloses a sound insulation and ventilation device for noise prevention and control, and belongs to the technical field of ventilation equipment. The sound insulation ventilation device for noise prevention and control comprises a ventilation pipe body, two sound insulation plates are rotationally connected between the inner walls of the two sides of the ventilation pipe body, and a fan is fixedly installed between the inner walls of the ventilation pipe body; each control mechanism comprises a mounting box, a transmission threaded rod, a transmission toothed plate and a transmission gear, the mounting box is fixedly connected to the outer surface of one side of the ventilation pipe body, the sound insulation ventilation device for noise prevention and control, the ventilation pipe body and the two sound insulation plates form an S-shaped air duct, and the surfaces of the sound insulation plates are covered with efficient sound absorption materials. These materials can rapidly capture and absorb sound waves, preventing further propagation of noise to other areas through the ventilation system. Meanwhile, due to the vertical arrangement mode of the sound insulation plates, the path length of sound transmission is increased, and the intensity of noise is further weakened through multiple times of reflection and interference.

The utility model relates to the technical field of cable detection, in particular to a guiding and conveying mechanism which comprises a guiding pulley block. The guide pulley block comprises two first guide wheels which are provided with brackets and are symmetrically distributed, and a second guide wheel which is positioned in the middle of the two first guide wheels; a first supporting piece is fixed to the top of the first guide wheel, a second supporting piece is fixed to the bottom of the second guide wheel, and the first supporting piece and the second supporting piece can be clamped with each other. And the first guide wheel and the second guide wheel are sequentially arranged to form a cable passing path. The utility model has the beneficial effects that the guide pulley blocks which are staggered up and down form a composite stress field, and the traditional scheme of synchronously applying three mechanical stresses of bending, stretching and extruding is mostly single-direction stress, so that hidden damage is physically expanded when passing through the pulley.

The invention provides a capacitance thin film vacuum gauge and semiconductor equipment, the capacitance thin film vacuum gauge comprises a shell, an induction diaphragm, a fixed electrode and a substrate, the induction diaphragm is fixed in the shell and divides an inner cavity of the shell into a reference cavity and a measurement cavity; the fixed protruding part of the shell protrudes from the inner wall of the shell to the interior of the shell in the radial direction of the shell, the fixed protruding part is used for supporting the base plate, and the induction diaphragm is located between the fixed protruding part and the base plate in the axial direction of the shell. The surface, facing the sensing diaphragm, of the substrate comprises a groove, the groove is recessed away from the sensing diaphragm, and the bottom of the groove is used for fixing the fixed electrode. The substrate is directly fixed on the sensing diaphragm, the arrangement of structural members between the substrate and the sensing diaphragm is reduced, the processing tolerance is reduced, the structure is simplified, the assembling and debugging difficulty is reduced, the temperature influence on the gap between the sensing diaphragm and the fixed electrode only depends on the CTE of the single structural member of the groove of the substrate, and the detection stability and the detection precision are improved.

This utility model provides a multi-layer composite soundproof enclosure, including a support assembly and a composite soundproof panel installed on the support assembly. The composite soundproof panel includes a perforated plate with several holes; a sound-absorbing layer, which is a flexible porous layer with several evenly distributed wave-shaped or wedge-shaped protrusions; a honeycomb sandwich panel layer, including a honeycomb core plate with several honeycomb grids, the honeycomb grids being filled with sound-absorbing particles or sound-absorbing fibers; and a frame, which circumferentially covers the outside of the perforated plate, the sound-absorbing layer, and the honeycomb sandwich panel layer, and sequentially presses the perforated plate, the sound-absorbing layer, and the honeycomb sandwich panel layer to form the composite soundproof panel. This utility model can solve the technical problem of poor noise reduction effect of existing soundproof enclosures on low and medium frequency noise.

The utility model discloses a kind of full-sealed type tensioning wheels, it is related to engine transmission technical field.The tensioning wheel includes swing arm, bearing and pulley, swing arm is connected by bolt with bearing, pulley is sleeved in bearing outer. To solve the problem that bearing is easy to enter water and dust under harsh working condition, pulley one end surface is equipped with sealing cover, sealing structure is equipped between the other end surface and swing arm, and the outer wall of bearing outer ring is equipped with plugging ring. Sealing structure includes annular groove on swing arm and the rubber sealing ring arranged in, sealing ring is equipped with convex part with triangular section, is blocked in pulley inner hole wall and groove. Pulley is also equipped with let slot, and annular groove edge forms "n" shape barrier gap. The utility model passes through multiple sealing structure, effectively blocks the water, dust invasion path, significantly improves the sealing property and service life of tensioning wheel, and is applicable to engineering machinery and wade engine.

The application provides an acoustic resonator, comprising a substrate, a resonant functional layer arranged above the substrate, the resonant functional layer comprising at least a bottom electrode, a piezoelectric layer and a top electrode arranged in a stack, a resonant cavity arranged between the resonant functional layer and the substrate, an effective resonant area being defined by the area where the resonant functional layer overlaps the resonant cavity, a release hole at least penetrating the piezoelectric layer and communicating with the resonant cavity, a channel penetrating the resonant functional layer and communicating with the resonant cavity, the channel communicating with the release hole through the resonant cavity, and in a horizontal direction, the maximum cross-sectional area of the channel is greater than the maximum cross-sectional area of the release hole. By arranging the channel penetrating the resonant functional layer and communicating with the resonant cavity, the heat center area of the resonator is removed, the heat accumulation of the effective resonant area is reduced, and the temperature uniformity is improved. Further, the side wall of the channel is provided with a reinforcing structure extending along the side edge of any layer in the resonant functional layer to the side edge of another layer, so that the structural strength of the resonator is improved and the transverse wave is inhibited.

The invention relates to the technical field of leather production, in particular to a leather production system and method.The leather production system comprises a rack, a feeding and drying mechanism, a cooling mechanism, a softening mechanism, a pressing mechanism, a transferring mechanism and a pricking mechanism, and the feeding and drying mechanism comprises a drying box, a feeding and conveying assembly, a drying and conveying assembly, a constant-temperature conveying assembly and a drying and blowing assembly; the drying box is arranged on the rack, the cooling mechanism comprises a cooling conveying assembly and a discharging conveying assembly, a feeding port and a discharging port are formed in the two sides of the drying box respectively, one end of the feeding conveying assembly extends to the outside of the feeding port, and the other end of the discharging conveying assembly extends to the outside of the discharging port. One end of the discharging conveying assembly extends to the outer portion of the discharging opening and is close to the softening mechanism. Through the efficient, accurate and innovative process characteristics, the leather processing quality and efficiency are remarkably improved.

The utility model relates to a highway roadbed side slope antiskid device, including the protective net frame of installation in the side slope body slope surface, the protective net frame is fixed on the side slope body through the anchor rod and the anchor line, the protective net frame is arranged and is set up with many sets of buffer components on the upside and downside of the side slope body side, the buffer component includes the multiple material guide plate of the upper portion and lower portion transverse arrangement setting, the material guide plate is set up in inverted " V " character type, and there is gap between the adjacent material guide plate of upper portion and between the adjacent material guide plate of lower portion, to facilitate material to guide down, through the utility model can when the debris flow is from the side slope body by the upper to the downward flow, the gradient shape design of material guide plate and the mutual cooperation between multiple material guide plates, can play the good buffer effect to the debris flow. The material guide plate of staggered arrangement has increased the path length and the resistance of mudstone roll, has effectively slowed down the roll speed of mudstone, has reduced its impact force.

The utility model relates to building template technical field, proposes a kind of building template for concrete building, gradient vibration-suppression hole structure is constructed inside the core layer of damping layer, wherein relatively dense structure, to enhance the reflection and scattering effect of high-frequency vibration, wherein loose structure is conducive to absorption and dissipation low-frequency vibration energy, by controlling the gradient change of pore, realize the efficient suppression of different frequency vibration, set up spiral special-shaped hole in the damping layer, compared with traditional circular hole, can increase the path length and reflection times of vibration wave inside the propagation of damping material, when vibration wave propagates along spiral hole, will constantly occur reflection and refraction, thereby more vibration energy is converted into heat energy and other forms of energy and dissipates, simultaneously the existence of special-shaped hole can also enhance the interaction of damping material and air, further improve damping effect.

The application relates to a connecting assembly of a vehicle controller, a controller and a vehicle. The connecting assembly comprises an insulating base and a conductive piece. The insulating base has a receiving cavity. The insulating base comprises a first opening and a second opening, which are respectively communicated with the receiving cavity. The axial direction of the first opening intersects with the axial direction of the second opening. The conductive piece is connected to the insulating base. A part of the conductive piece is located in the receiving cavity. The conductive piece comprises a main body part and a bent part. The main body part passes through the first opening. The bent part is connected with the main body part and is bent relative to the main body part. The bent part passes through the second opening and extends out of the receiving cavity. The axial directions of the first opening and the second opening intersect with each other in the application. When the conductive piece passes through the insulating base, a certain bending path is formed. The bending increases the path length and difficulty of oil and gas penetration.

The present invention discloses a fully automatic printing system, which relates to the field of automatic printing technology and solves the problem that the ink on the surface of printed products is easily scratched, stained or even worn. At the same time, the problem of low product printing efficiency is solved. The fully automatic printing system includes a chassis, an upper frame, an automatic printing component and an integrated conveying and shaping mechanism. The top of the chassis is equipped with an upper frame, and the inner side of the upper frame is provided with an automatic printing component installed at the top edge of the chassis. The automatic printing component performs automatic printing operations on the product, and an integrated conveying and shaping mechanism is installed at the center of the top of the chassis. In the present invention, the products that have been printed and are being moved are subjected to automatic air-drying and shaping pretreatment to ensure that the ink printed on the surface of the product can be more firmly bonded to the product, and the printed ink will not be scratched, stained or even worn due to the vibration force and friction force of the above-mentioned operation, thereby effectively improving the quality of the product after printing.

The utility model relates to a cleaning device and a harvester, the cleaning device comprises a screen box, the rear end of the screen box is provided with a horizontal discharge port, the discharge port is provided with a cleaning loss detection mechanism, the cleaning loss detection mechanism is horizontally arranged at the discharge port, and the discharge port is provided with a discharge port. The length direction of the cleaning loss detection mechanism extends in the direction perpendicular to the material discharging direction, and the two ends of the cleaning loss detection mechanism are detachably connected to the screen box. The detection efficiency can be improved, and the grain loss rate can be reduced.

The utility model relates to the technical field of plastic casings, and provides a high-stability high-strength thermoplastic plastic casing assembly, which comprises a casing main body, a frame, a grid frame, a plug-in assembly and a heat dissipation dustproof assembly, the frame is arranged on the inner side of the casing main body, the grid frame is fixed in the frame, and the plug-in assembly is arranged on the inner side of the casing main body. The plug-in assembly is arranged between the casing main body and the frame, and the heat dissipation dustproof assembly is arranged on the casing main body; the inserting assembly comprises inserting grooves, first rubber protruding blocks, inserting rods and second rubber protruding blocks, the inserting grooves are formed in the upper side and the lower side of the machine shell body, the first rubber protruding blocks are vertically fixed in the inserting grooves, the inserting rods are fixed to the sides, close to the machine shell body, of the upper portion and the lower portion of the frame, and the second rubber protruding blocks are vertically fixed to the inserting rods; the heat dissipation dustproof assembly comprises a heat dissipation channel, a first baffle and a second baffle. The LED lamp is suitable for occasions needing light weight, high strength and good heat dissipation performance.