240 results about "Leafy vegetables" patented technology

The invention discloses a leaf vegetable disease detection method based on few sample learning and prototype attention. The method comprises the following steps: S1, preprocessing and enhancing data; s2, performing multi-scale feature extraction on the image; s3, global feature modeling is carried out; s4, target detection and semantic segmentation; and S5, carrying out few-sample optimization and fine tuning. According to the leaf vegetable disease detection method based on few-sample learning and prototype attention, a few-sample learning network architecture is introduced for solving the problem of agricultural disease data sample scarcity, rapid and accurate disease area identification and segmentation can be realized under a limited data condition, target detection and semantic segmentation tasks are combined, and the detection efficiency is improved. Disease positioning and fine-grained segmentation are carried out, the detection precision and segmentation performance are improved, prototype extraction and an attention mechanism are fused, the learning ability of the model under the low-sample condition is effectively improved, the method can be applied to disease detection and control of the vegetable planting area in real time, and efficient disease management of farmers is supported.

The invention discloses a leafy vegetable image segmentation method, system and device and a medium, and relates to the technical field of target segmentation, and the method comprises the steps: collecting leafy vegetable image data, and extracting a multi-scale initial feature map; convolution is carried out on the multi-scale initial feature map to obtain a multi-scale feature map, new feature mapping is generated for the multi-scale feature map from bottom to top, and the new feature mapping is fused to obtain a final feature map; and generating an initial prediction mask based on the final feature map, carrying out blocking, DCT transformation, correction and boundary optimization operation on the initial prediction mask, outputting a multi-dimensional DCT vector containing mask information, and taking the final multi-dimensional DCT vector as a final prediction mask to obtain a segmentation result of the leaf vegetable image. On the basis of the method, the local features of the leaf vegetables are captured, multi-scale feature fusion is carried out, core information of leaf vegetable images is reserved, and the influence of environmental factors is reduced.

The invention belongs to the technical field of vegetable culture media, and relates to a leaf vegetable culture medium with pepper seed meal as a raw material and a preparation method thereof.The leaf vegetable culture medium is prepared by mixing and stirring pepper seed meal leavening, regenerated old media, activated coco coir powder, bamboo fiber charcoal powder, modified diatomite, modified zeolite powder and an adhesive according to the mass ratio of (8-12): (4-8): (2-4): (1-3): (3-7): (1-3): (1-3); placing for 2-3 days in an environment with the humidity of 70-80% and the temperature of 40-50 DEG C, then drying until the water content is less than or equal to 8%, and sterilizing to obtain the leafy vegetable culture medium. The Chinese prickly ash seed meal is used as a main raw material, and combined with compound bacteria fermentation, old substrate regeneration, functional material modification and waste high-value treatment, the defects of an existing substrate in the aspects of environmental friendliness, nutrient release, recovery rate, water and fertilizer retention capacity and the like are systematically overcome.

The invention relates to the technical field of microorganisms, in particular to bacillus thuringiensis ZL-5, a compost biological agent as well as a preparation method and application of the compost biological agent. The preservation number of the bacillus thuringiensis ZL-5 is CCTCC (China Center for Type Culture Collection) NO: M 20241070. According to the method, the leafy vegetable waste is used as a main material, the straw is used as an auxiliary material, the provided composting biological agent is added to compost the leafy vegetable waste, the temperature of a compost body can be increased to 60 DEG C or above in the 2th day and can be kept at the high-temperature period of 6-8 days, and the leafy vegetable waste is completely decomposed about the 20th day. In a compost body added with the biological agent, the percentage value of Hu-rich and the percentage value of humic acid are 9.0%-12% and 20%-30% respectively, after composting, the leaf vegetable organic fertilizer remarkably improves the germination index of lettuce seeds, and biochemical humic acid remarkably promotes the dry quality, plant height, chlorophyll content and leaf area of the overground part, the dry weight of the underground part and the total root tip number of the lettuce.

The invention provides a leaf vegetable disease detection, regulation and control method and system based on deep learning. And collecting a growth image and environmental parameter data of the leafy vegetables, performing disease detection by using the improved DETR model, and outputting a bounding box and a disease category of a disease area. Segmenting by adopting a weak supervision segmentation method based on a bounding box to obtain a pixel-level segmentation map of each disease region, extracting color, shape and area characteristics of the disease regions, and carrying out grading quantification on the diseases to generate a disease grade score. The optimal planting strategy is obtained through the deep Q network model, the environment parameters such as illumination, temperature and humidity are adjusted through the execution mechanism, the leaf vegetable growth environment is optimized, and the production efficiency is improved. According to the method, deep learning and intelligent regulation and control technologies are combined, efficient disease recognition and fine environment regulation and control can be achieved, loss caused by diseases is reduced, the yield and quality of leafy vegetables are improved, manual intervention is reduced, and the method has high practicability and popularization value.

The invention relates to the technical field of vegetable cleaning and packaging, and discloses a leafy vegetable cleaning and packaging machine which comprises a machine body, and a root removing system, a yellow leaf removing system, a cleaning system, a water removing system and a packaging system which are sequentially mounted on the machine body from front to back. Root removing, yellow leaf removing, cleaning, water removing and packaging are integrated, full-process automatic operation is achieved, efficiency is greatly improved, manual intervention is reduced, precise operation is ensured, time cost is remarkably saved, processing work is efficient and smooth, the leaf vegetable processing device can adapt to most types of leaf vegetables, and the limiting baffle, the v-shaped groove and the like can be adjusted according to the types and the sizes of the leaf vegetables.

The utility model relates to the technical field of vegetable cleaning, and discloses a leaf vegetable cleaning device which comprises a box body, a cleaning cylinder detachably connected to the box body, a driving part arranged on the box body and a transmission assembly arranged on the box body, a plurality of communicating holes are formed in the peripheral side of the cleaning cylinder, and a containing opening allowing stem vegetables to pass through is formed in one end of the cleaning cylinder; at least part of the cleaning cylinder is located in the box body, the cleaning cylinder is provided with a center shaft, the transmission assembly comprises a driving part arranged on an output shaft of the driving part and a driven part in transmission connection with the center shaft, and the driven part is in transmission connection with the driving part. All leaf vegetables in the cleaning cylinder can be in contact with cleaning water in the box body, so that the leaf vegetables can be cleaned; moreover, the leafy vegetables have inertia, so that a rotating speed difference exists between the leafy vegetables and the cleaning cylinder, and the leafy vegetables can roll over under the action of the rotating speed difference, so that the cleaning effect on the leafy vegetables is improved.

The utility model discloses a full-automatic leaf vegetable harvesting and bundling machine which comprises a main body frame and wheels located at the bottom of the main body frame, a harvesting unit is arranged on the front portion of the main body frame 23, a bundling unit is arranged on the rear portion of the main body frame, and the harvesting unit conveys harvested vegetables to the bundling unit through a conveying unit. Conveying of the conveying unit is completed through the driving unit; according to the full-automatic bundling system, the bundling compactness and shape can be intelligently adjusted according to the number and length of leaf vegetables, so that the bundled leaf vegetables are neater and more attractive; the full-automatic operation mode not only greatly improves the working efficiency, but also reduces the dependence on manpower, so that the agricultural production is easier and more efficient.

The utility model discloses a vibration shoveling and cutting device of a self-propelled leaf vegetable orderly harvester, and relates to the technical field of leaf vegetable harvesting machinery, and the vibration shoveling and cutting device is provided with a bearing frame, a first bearing rod, a driving frame, a cutter mounting plate, a vibration shoveling cutter, a driving mechanism, a second bearing rod, a connecting shaft, an adjusting mechanism and a traction mechanism which are matched with one another; under the matching action of the driving frame, the cutter mounting plate, the vibration scraper knife and the driving mechanism, the vibration scraper knife on the cutter mounting plate can be driven to rapidly vibrate in a reciprocating mode, and therefore leaf vegetables can be effectively cut. Meanwhile, under the action of mutual cooperation of a second bearing rod, a connecting shaft, an adjusting mechanism and a traction mechanism, the effect of quickly adjusting the height position of a vibration scraper knife on a cutter mounting plate can be achieved, so that the effects of saving time and labor, accelerating the harvesting progress of leaf vegetables and reducing the labor intensity of workers are achieved.

A self-propelled leaf vegetable orderly harvester comprises a rack, a plurality of supporting frames are installed at the bottom of the rack, and a plurality of sets of lower conveying mechanisms are arranged at the tops of the supporting frames; the leaf vegetables can be orderly conveyed in the conveying structure and gathered and collected in the conveying process, meanwhile, the stem and leaf vegetables are changed into a tiled state from a vertical state to be adjusted, the leaf vegetables fall into the collecting structure from a horizontal state, in the adjusting process, the lodging directions of the stem and leaf vegetables are consistent, and the leaf vegetables are not prone to falling off. Therefore, the phenomenon that the leafy vegetables are disordered is avoided, the conveying uniformity of the stem and leafy vegetables is improved, and the harvesting operation efficiency is improved. The conveying belt is made of a flexible material, so that the clamping force can be prevented from being too large, the conveying belt can be better attached to the vegetables, better flexible clamping is realized, the vegetables are clamped to the maximum extent on the premise that the vegetables are not damaged, and the damage to the vegetables is reduced; the harvesting efficiency can be greatly improved, meanwhile, the labor intensity can be reduced, the application range is wide, and therefore the production cost of planting enterprises is reduced.

The utility model discloses a liftable and rotatable multi-layer plant planting device which is characterized by comprising a three-dimensional planting frame, a planting unit, a lifting unit, a rotating unit, a nutrient solution circulating unit, an illumination unit and a control unit. The three-dimensional planting frame comprises supporting stand columns, a base and a top base. Each planting unit comprises a planting box base, a planting box and a planting box cover. The top end of the lifting unit is connected with the planting box base; the rotating unit is located between the planting box base and the planting box; the nutrient solution circulating unit comprises a water tank, a water pipe and a water pump; the illumination unit comprises a light supplementing lamp and an illumination controller; the control unit comprises a sensor, a processor and a communicator. The utility model discloses a liftable and rotatable multi-layer plant planting device which can meet the requirement for simultaneous planting of various crops such as seedlings, leafy vegetables and rice, and the space utilization rate of plant planting is further increased.

The utility model relates to the technical field of cultivation frames, in particular to an intelligent cultivation frame which comprises an outer frame and is characterized in that a water supply system is fixedly installed at the bottom of the outer frame, a plurality of cultivation mechanisms are sequentially and movably installed on the inner side of the outer frame from bottom to top, and a folding pipeline is installed between the water supply system and the cultivation mechanisms. A controller I is mounted on the outer frame; the cultivation mechanism comprises a layer plate, the layer plate is connected to the outer frame through a transmission device, and scanning water spraying mechanisms are arranged on the two long side faces of the layer plate through sliding devices. Each layer of cultivation mechanism can move independently, the light source problem is solved, and meanwhile the growth requirements of various plants can be met, for example, leaf vegetables need small interlayer spacing, ball vegetables need medium interlayer spacing, and forage grass and solanaceous vegetables need large interlayer spacing.

The invention relates to a row-aligning root-removing and harvesting device for hydroponic leaf vegetable cultivation plates in a plant factory. The row-aligning root-removing and harvesting device comprises an automatic conveying and root-removing device, an automatic root-cutting device and a harvesting and conveying device, the automatic conveying and root removing device comprises a conveying table and conveying table conveying belts arranged on the two sides of the conveying table, the edges of the two sides of a cultivation plate are supported on the two conveying table conveying belts to achieve forward conveying, and the automatic root cutting device conducts root cutting operation on the roots of leafy vegetables on the cultivation plate. The automatic conveying and root removing device further comprises a plurality of root removing mechanisms which are arranged side by side in the left-right direction, and the root removing mechanisms pull out the cut roots downwards. According to the device, leaves can be automatically gathered, part of roots are cut off after being exposed, the leaves are prevented from being damaged in the cutting and harvesting process, the roots separated from leaf vegetables are pulled out downwards from the sponge through the root removing device and fall into the root collecting box, the treated leaf vegetables are conveyed upwards to be collected, the full-automatic harvesting requirement of the hydroponic leaf vegetables is met, and the working efficiency is effectively improved. And meanwhile, the labor cost is saved.

The invention relates to a leaf vegetable constant-force clamping and conveying mechanism based on a non-circular gear system and a transmission ratio algorithm. The clamping and conveying mechanism comprises a rack and a plurality of constant-force clamping modules installed on the rack. The constant-force clamping module comprises a non-circular gear system, the non-circular gear system comprises a front-end non-circular gear rotationally connected with the mounting shell and a rear-end non-circular gear, and the front-end non-circular gear is in transmission connection with the rear-end non-circular gear through a plurality of middle non-circular gears; a floating connecting rod is fixedly connected to the first rotating shaft, a floating clamping wheel is installed on the floating connecting rod, and the wheel face of the floating clamping wheel abuts against the inner side face of the clamping conveying belt. The constant-force clamping module serves as a core component of the whole clamping and conveying mechanism, and constant-force clamping of leaf vegetables is achieved through the design of a non-circular gear train. The driving module is used for driving the clamping belt to rotate. Clamping damage in the mechanical harvesting process of the leafy vegetables can be avoided, flexible clamping and conveying of the leafy vegetables under different feeding amounts are achieved, and low-damage orderly harvesting of the leafy vegetables is completed.

The application discloses a kind of special sulfur-based compound fertilizer of leaf vegetable, preparation method and device, belong to compound fertilizer preparation technical field.The preparation of the compound fertilizer includes the following steps: sulfur, anhydrous ethanol are mixed and stirred, constant temperature oscillation, stand until clear state, take supernatant and mix with distilled water, oscillation, add sodium dodecyl sulfate, oscillation, add coating agent, oscillation, obtain material B, stand by;Ammonia is introduced into phosphoric acid to adjust to pH 4.3-4.8, filter pressing, collect filtrate to obtain feed liquid D;Material B is filtered, and the filter residue is collected and mixed with feed liquid D, guar gum and locust bean gum are added, oscillation is carried out, a mixed slurry is obtained, granulation is carried out, drying is carried out, screening is carried out, and cooling is carried out, to obtain the compound fertilizer, improve the sulfur and phosphorus ammonium slurry combination degree, avoid the loss of fertilizer efficiency, prevent the occurrence of safety hazards.

The invention provides an efficient and energy-saving food processing raw material pretreatment combined device, and relates to the technical field of food processing. The device comprises a dewatering outer barrel, a base plate, a centrifugal tray mechanism, a water confluence assembly, a master controller and a hot blast stove. The centrifugal tray mechanism is composed of a centrifugal disc, a centrifugal rotating shaft, a jacking and pulling assembly and a liftable circular stop rod piece, and a centrifugal dewatering cavity is formed by the centrifugal tray mechanism and the internal air injection conical cylinder assembly. The water confluence assembly collects and weighs water removed through centrifugation and transmits data to the master controller. The master controller intelligently adjusts the rotating speed of the dewatering motor according to real-time moisture data, the hot blast stove is started when the dewatering rate reaches a set value, hot air is jetted to materials through the centrifugal rotating shaft and the jet cone, and combined drying is carried out. The device realizes automatic connection of centrifugal dewatering and hot air drying, has the advantages of high dewatering efficiency, good energy-saving effect and capability of protecting material quality, and is particularly suitable for pretreatment of food raw materials such as leaf vegetables and berries.

The invention provides a nutrient solution formula. The nutrient solution formula comprises organic nitrogen, organic phosphorus, organic potassium, active calcium, quick-acting sulfur, magnesium, zinc, selenium, ferrous sulfate, organic silicon, expanded fertilizer, mineral source humic acid, chitin, live bacterial fertilizer, boric acid, manganese sulfate, zinc sulfate heptahydrate, ammonium molybdate, copper sulfate heptahydrate, disodium iron ethylenediaminetetraacetate, citric acid and water. According to the nutrient solution formula and the preparation system thereof provided by the invention, microelements are added into the formula, so that the nutrient requirements of vegetables during growth are met, the growth of the vegetables is promoted, and meanwhile, citric acid is added, so that the nutrient solution is stable in property, and the effectiveness of the nutrient solution can be kept in a relatively long period; the physiological acid-base reaction caused in the nutrient solution absorption process of the leaf vegetables can be kept stable, the activity of the root system is improved through high water-soluble phosphorus in the formula, the photosynthesis is improved through the magnesium element, long-acting biological sulfur is provided, and continuous energy supply is provided.

This utility model discloses a cutting knife assembly for removing roots from leafy vegetables, relating to the field of food processing technology. The utility model includes a fixed plate with a fixed column fixedly connected to its outer wall. A cutting knife mechanism and a collecting mechanism are provided on the fixed plate. The cutting knife mechanism includes a second fixed plate fixedly connected to the outer wall of the fixed plate, with a circular hole inside the second fixed plate. By incorporating the cutting knife, the utility model first inserts one side of the leafy vegetable leaf through the circular hole, blocking the root. Then, the operator holds one side of the leafy vegetable leaf with one hand, positioning the root below the cutting knife, while the other hand squeezes the pressing plate. This mechanism achieves hand-foot separation, using the pressing plate as a safety interlock to ensure the operator's hands are in a safe position during the cutting action, while simultaneously cutting the root of the leafy vegetable, facilitating subsequent processing.

The present application relates to a kind of hydraulic control system and control method for leaf vegetable harvester, including front wheel steering hydraulic system, rear wheel drive hydraulic system and header lifting hydraulic system, front wheel steering hydraulic system realizes the front wheel steering of leaf vegetable harvester, rear wheel drive hydraulic system realizes the advance and retreat of leaf vegetable harvester, and header lifting hydraulic system realizes the leaf vegetable harvesting start of leaf vegetable harvester;The present application gathers together to drive rear wheel advance or retreat and front wheel steering with header lifting, guarantee stable transmission process and reduce the labor intensity of operator.

The invention relates to the technical field of planting substrates, and particularly discloses a seedling substrate special for leafy vegetables. The substrate is prepared from a bottom substrate and a covering substrate material, wherein the bottom substrate is prepared from the following substances: turf, perlite, vermiculite, a water-retaining agent loaded with growth promoting elements, potassium nitrate, calcium superphosphate, Previcle and chlorothalonil; the covering substrate is composed of vermiculite and carbendazim. Compared with the prior art, the prepared seedling raising substrate has the advantages of being good in water-retaining property, high in seedling survival rate and the like.

The present invention discloses a leafy vegetable disease detection method based on few-shot learning and prototype attention, comprising the following steps: S1, preprocessing and enhancing data; S2, performing multi-scale feature extraction on images; S3, global feature modeling; S4, target detection and semantic segmentation; S5, few-shot optimization and fine-tuning. The present invention adopts the above-mentioned leafy vegetable disease detection method based on few-shot learning and prototype attention. Aiming at the problem of scarcity of agricultural disease data samples, the few-shot learning network architecture is introduced. It can realize fast and accurate disease area identification and segmentation under limited data conditions, combines target detection and semantic segmentation tasks, performs disease location and fine-grained segmentation, improves detection accuracy and segmentation performance, integrates prototype extraction with attention mechanism, effectively improves the learning ability of the model under low-sample conditions, can be applied in real time to disease detection and control in vegetable planting areas, and supports farmers in efficient disease management.

The invention provides a multifunctional paenibacillus terrae capable of degrading organophosphorus pesticides, resisting diseases and promoting growth, the strain is paenibacillus terrae and is preserved in the China General Microbiological Culture Collection Center (CGMCC), and the preservation number is CGMCC No.30973. The invention further provides a preparation method of the paenibacillus terrae. The strain can degrade organophosphorus pesticides: profenofos, malathion, diazinon, phoxim and fenthion, wherein the degradation effect on the diazinon is the best; the growth and development of meloidogyne incognita can be inhibited, and tomato rhizobium caused by the meloidogyne incognita Fusarium oxysporum can be antagonized, and tomato fusarium wilt caused by the fusarium oxysporum can be prevented and treated; the fertilizer can increase the supply of rapidly available phosphorus in soil and promote the growth of leaf vegetables.

The invention discloses a prefabricated photocatalyst film for retaining freshness of leaf vegetables as well as a preparation method and application of the prefabricated photocatalyst film. The photocatalyst film comprises the following components in parts by weight: 100 parts of chitosan; 0.5 to 2 parts of metal-nitrogen doped titanium dioxide; 0.5 to 1 part of riboflavin; 30 to 40 parts of glycerol; wherein the metal-nitrogen doped titanium dioxide is iron-nitrogen doped titanium dioxide and / or copper-nitrogen doped titanium dioxide. The photocatalyst film is used for sealing the prefabricated leaf vegetables, composite LED illumination in the cold chain distribution process is combined, the antibacterial and fresh-keeping effects are achieved, microbial infection of the prefabricated vegetables in the cold chain distribution process can be reduced, water loss and chlorophyll degradation can be reduced, and the shelf life of the prefabricated vegetables can be prolonged.

The utility model discloses a rooted leafy vegetable harvester which comprises a rack, and small traveling wheels are symmetrically arranged on the front portion of the rack. Large traveling wheels are symmetrically arranged at the rear part of the rack; lifting mechanisms are arranged on the two sides of the rack, the moving ends of the lifting mechanisms are connected with a moving frame, a plurality of obliquely-arranged harvesting and conveying mechanisms are detachably connected to the moving frame, and break shovels are detachably connected to the front ends of the harvesting and conveying mechanisms; a leafy vegetable storage mechanism is arranged on the rear portion of the upper end of the rack and connected with the harvesting and conveying mechanism. A root removing mechanism is arranged at the front end of the rack; a first driving mechanism is arranged on the rack, and the first driving mechanism is connected with the large advancing wheel and the leaf vegetable storage mechanism; and a second driving mechanism is arranged on the moving frame and is connected with the harvesting and transporting mechanism. When the leafy vegetables are collected, the roots of the leafy vegetables can be removed, and processing steps are reduced.

The present invention discloses an intelligent leafy vegetable harvester, which uses a motor to drive a triangular crawler as a traveling mechanism, and drives the cutting, soil shaking, and conveying mechanisms to operate through the motor. It adopts two sets of conveying mechanisms. The primary conveyor conveys the cut leafy vegetables, and the secondary conveyor mechanism uses a time switch to achieve the collection of leafy vegetables in one direction to a fixed position. This machine adopts two sets of electric control systems. One set is controlled by buttons on the machine itself, and the other set realizes remote control through a remote controller. The remote controller sends signals to the control mechanism of the whole machine to enable the whole machine to automatically move forward, turn, and complete operations in the field.

The utility model relates to clean vegetable processing equipment, which belongs to the technical field of clean vegetable equipment and comprises a rack, a vegetable cutter is fixed at the top of the rack, a first cleaning machine is arranged below the vegetable cutter, a second cleaning machine is arranged below the first cleaning machine, a vegetable basket is arranged below the discharge end of the second cleaning machine, and spin-drying machines are arranged on the front side and the rear side of the second cleaning machine. According to the utility model, the conventional complex clean vegetable processing production line is integrated into one device, the processes of cutting, cleaning and dewatering of the conventional production line are realized, the device is miniaturized, the occupied area is greatly reduced, and the use of small and medium-sized restaurant kitchens and vegetable processing factories is facilitated. And the method is wide in universality and can be used for processing various root vegetables and leaf vegetables.

The present invention relates to the use of a Raman spectral signature of nitrate, as a biomarker for an early, real-time diagnosis of nitrogen status in growing plants in a non-invasive or non-destructive way in order to detect nitrogen deficiency before the onset of any visible symptoms. The early, real-time diagnosis of nitrogen deficiency in plants makes it possible to correct nitrogen deficiency for the avoidance of negative effects on the yield and biomass of growing plants or leafy vegetables.

The utility model belongs to the technical field of agricultural machinery, and particularly relates to a harvesting device for potted leaf vegetables in a greenhouse, which comprises two groups of oppositely arranged driving components, the driving components are arranged on channels on two sides of a seedbed, each group of driving components comprises a front wheel and a rear wheel, a first fixing rod is arranged between the front wheel and the rear wheel, and a second fixing rod is arranged between the front wheel and the rear wheel. Second fixing rods are arranged on the front wheels, vibrators are oppositely arranged on the second fixing rods on the two sides, and a thin rope is arranged between the two vibrators and used for harvesting leaf vegetables. A net bag is arranged between the second fixing rod and the rear wheel and used for collecting harvested leaf vegetables. According to the harvesting device, it is ensured that damage to leaf vegetables in the harvesting process is minimized, meanwhile, the harvesting continuity and efficiency are improved, the harvesting device is convenient to operate, the planting environment of a modern greenhouse is fully considered, and optimization is carried out particularly according to the characteristics of a tidal seedbed.

The present invention relates to a constant-force clamping and conveying mechanism for leafy vegetables based on a non-circular gear system and a transmission ratio algorithm. The clamping and conveying mechanism includes a frame and a plurality of constant-force clamping modules mounted on the frame. The constant-force clamping module includes a non-circular gear system, which includes a front non-circular gear rotatably connected to a mounting shell, and a rear non-circular gear. The front non-circular gear is transmission-connected to the rear non-circular gear via a plurality of intermediate non-circular gears. A floating connecting rod is fixed to the first rotating shaft, and a floating clamping wheel is mounted on the floating connecting rod. The wheel surface of the floating clamping wheel is pressed against the inner side surface of the clamping conveyor belt. The constant-force clamping module is the core component of the entire clamping and conveying mechanism. By designing the non-circular gear system, the constant-force clamping of the leafy vegetables is achieved. The driving module is used to drive the clamping belt to rotate. The present invention can avoid clamping damage during the mechanical harvesting process of leafy vegetables, realize flexible clamping and conveying of leafy vegetables under different feed amounts, and complete low-damage and orderly harvesting of leafy vegetables.