Small radish harvester

Abstract

The utility model provides a small radish harvester which comprises a frame body, two U-shaped guiding deep digging devices are arranged at the front end of the frame body and used for detecting the position of a radish and digging the radish, four universal wheels are arranged on the peripheral side of the bottom of the frame body, and a handheld handle is fixedly connected to the rear end of the frame body. The transmission tensioning mechanism comprises two groups of oppositely arranged fixing plates, two groups of transmission gear sets, two tensioning belts and two driving pieces; wherein the two groups of fixing plates are vertically and fixedly connected to the left inner side wall and the right inner side wall of the frame main body respectively; the two transmission gear sets are installed on the corresponding fixing plates in a pivoted mode respectively, and each transmission gear set comprises a driving gear and a driven gear. The two tensioning belts sequentially bypass the driving gears and the driven gears of the two transmission gear sets correspondingly to form an upper closed transmission path and a lower closed transmission path. The device can continuously dig, convey and separate radishes, all links are tightly matched in the whole harvesting process, frequent manual intervention is not needed, and the harvesting efficiency of the radishes is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to agricultural machinery technical field, concretely relates to a small -size radish harvester. BACKGROUND

[0002] Traditional radish harvesting relies on manual excavation and screening, and has problems such as low efficiency, high labor intensity, high radish breakage rate and leaf residue. The existing mechanical harvester has a complex structure and is difficult to adapt to small-scale farmland operation. UTILITY MODEL CONTENTS

[0003] The utility model is directed at the deficiencies of the prior art, and provides a small -size radish harvester.

[0004] The specific technical scheme is as follows:

[0005] A small -size radish harvester, comprising

[0006] The frame body is provided with two U-shaped guide deep excavators at the front end for detecting the position of radish and excavating radish, four universal wheels are arranged on the bottom periphery, and a handheld handle is fixedly connected to the rear end.

[0007] The transmission tensioning mechanism comprises two groups of fixed plates, two groups of transmission gear sets, two tensioning belts and two driving members; wherein the two groups of fixed plates are vertically fixed to the left and right inner side walls of the frame body respectively; the two groups of transmission gear sets are pivotally installed on the corresponding fixed plates, and each group of transmission gear set comprises a driving gear and a driven gear; the two tensioning belts are sequentially wound around the driving gears and the driven gears of the two groups of transmission gear sets respectively, forming two closed transmission paths, and the two tensioning belts are used for clamping and transmitting the radish leaves at the upper end of the radish excavated by the U-shaped guide deep excavator; the two driving members are connected with the output shafts of one group of driving gears respectively, for driving the two transmission gear sets to rotate in opposite directions; and

[0008] The U-shaped separation plate is fixed between the lower ends of the two groups of fixed plates, and the U-shaped cutout provided on the U-shaped separation plate is vertically arranged with the transmission surfaces of the two tensioning belts, for separating radish and radish leaves.

[0009] Optionally, the two U-shaped guide deep excavators are arranged in a U-shaped structure, the opening of which faces forward, and the lower end of the U-shaped guide deep excavator is at an inclined angle with the ground, for guiding the radish roots into the two U-shaped guide deep excavators and completing deep excavation.

[0010] Optionally, the upper end of the U-shaped guide deep excavator is provided with a guide plate connected with the two tensioning belts, for guiding the excavated radish into the belt transmission path.

[0011] Optionally, the guide plate is provided with a misaligned groove misaligned with the driven gear.

[0012] Optionally, the two U-shaped guiding diggers are provided with electric push-pull mechanisms and spacing sensor groups electrically connected with the electric push-pull mechanisms, for synchronously driving the two U-shaped guiding diggers to move towards or away from each other to adapt to radishes of different sizes.

[0013] Optionally, the spacing sensor groups comprise laser ranging sensors and ultrasonic arrays for real-time detection of the current spacing and the size of the radish roots.

[0014] Optionally, the driving member is a servo motor.

[0015] Optionally, opposite sides of the two tension belts are provided with concave-convex stripes.

[0016] Optionally, the frame body is made of high-strength aluminum alloy and is provided with a rust-proof coating on the surface.

[0017] Optionally, the hand-held handle is in a hollow tubular structure.

[0018] Compared with the prior art, the small radish harvester has the following beneficial effects:

[0019] Compared with the traditional manual radish harvesting method, the small radish harvester can continuously dig, transport and separate radishes, and each link is closely coordinated in the whole harvesting process, without frequent manual intervention, so that the radish harvesting efficiency is greatly improved, and more radishes can be harvested in the same time, which can significantly improve the production efficiency for large-scale radish planting. The operator only needs to hold the hand-held handle of the harvester to control the moving direction of the harvester, without the heavy labor of bending to dig radishes and manually separating radishes and radish leaves. In the whole harvesting process, the part of manual participation is mainly to control the movement of the harvester, so that the labor intensity is effectively reduced, and the radish harvesting work is more relaxed. In addition, due to the small structure and the design of the universal wheels at the bottom, the harvester can be flexibly used in small-area radish planting land or family farms, and can be easily operated in narrow planting rows or family farms with slightly undulating terrain, which is suitable for different planting layouts and terrains and has strong applicability. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 FIG. 1 is a general structural diagram of a small radish harvester according to the present application;

[0021] Figure 2 FIG. 2 is a side view structural diagram of the small radish harvester according to the present application;

[0022] Figure 3 FIG. 3 is a front view structural diagram of the small radish harvester according to the present application.

[0023] In the figure: 1, frame body; 11, U-shaped guide deep digger; 111, guide plate; 112, staggered slot; 12, universal wheel; 13, hand handle; 2, transmission tensioning mechanism; 21, fixed plate; 22, transmission gear set; 221, driving gear; 222, driven gear; 23, tensioning belt; 24, driving part; 3, U-shaped separation plate. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0025] It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict.

[0026] The utility model will be further described below with reference to the drawings and specific embodiments, but is not as the limitation of the utility model.

[0027] The small-sized radish harvester provided in the utility model refers to Figures 1-3 , comprising

[0028] The frame body 1 is provided with two U-shaped guide deep diggers 11 at the front end for detecting the position of radish and digging radish, four universal wheels 12 are arranged on the bottom periphery, and the rear end is fixedly connected with a hand handle 13;

[0029] The transmission tensioning mechanism 2 comprises two groups of fixed plates 21 arranged oppositely, two groups of transmission gear sets 22, two tensioning belts 23 and two driving parts 24. The two groups of fixed plates 21 are respectively perpendicularly fixed to the left and right inner side walls of the frame body 1. The two groups of transmission gear sets 22 are respectively pivotally installed on the corresponding fixed plates 21, and each group of transmission gear sets 22 comprises a driving gear 221 and a driven gear 222. The two tensioning belts 23 are respectively wound around the driving gears 221 and the driven gears 222 of the two groups of transmission gear sets 22 in sequence, forming two closed transmission paths, and the two tensioning belts 23 are used for clamping and transmitting the radish leaves at the upper end of the radish dug by the U-shaped guide deep digger 11. The two driving parts 24 are respectively connected with the output shafts of one group of driving gears 221, and are used for driving the transmission gear sets 22 to rotate in opposite directions; and

[0030] The U-shaped separation plate 3 is fixed between the lower ends of the two groups of fixed plates 21, and the U-shaped cutout provided on the U-shaped separation plate 3 is arranged opposite to the transmission surfaces of the two tensioning belts 23, and is used for separating radish and radish leaves.

[0031] When the harvester is started, the driving member 24 starts to work, driving the driving gear 221 connected thereto to rotate, and the rotation of the driving gear 221 drives the driven gear 222 to rotate through the meshing between the gears, so that the two tension belts 23 start to operate; in the process of moving forward, the U-shaped guide digger 11 at the front end of the frame body 1 continuously detects the position of the radish, and once the radish is detected, the U-shaped guide digger 11 digs the radish out of the soil, and the radish leaves at the upper end of the radish are transported by the tension belts 23, and in the process of transportation, the radish and the radish leaves are moved together to the position of the U-shaped separation plate 3. Since the U-shaped cutout on the U-shaped separation plate 3 is arranged perpendicularly to the transmission surface of the two tension belts 23, the radish will pass through the U-shaped cutout smoothly, while the radish leaves at the upper end of the radish will be blocked by the U-shaped separation plate 3, realizing the separation of the radish and the radish leaves, at this time, the radish without leaves will be separated from the tension belts 23, while the separated radish leaves will continue to be transported upward until the end of the tension belts 23, and then be separated from the device. Compared with the traditional manual harvesting method of radish, this small radish harvester can continuously dig, transport and separate radish, greatly improving the harvesting efficiency of radish. In the same time, more radish can be harvested, reducing the labor cost and labor time. The operator only needs to hold the hand-held handle 13 of the harvester to control the moving direction of the harvester, without the need to bend down to dig radish and manually separate radish and radish leaves and other heavy labor, effectively reducing the labor intensity. Due to its small structure and the design of the universal wheel 12 at the bottom, this harvester can be used flexibly in small-area radish planting land or family farms, and is suitable for different planting layouts and terrains.

[0032] Referring to Figures 1-3 , the two U-shaped guide diggers 11 are arranged in a lateral U-shaped structure, the opening of which faces forward and the lower end of the U-shaped guide digger 11 is at an inclined angle with the ground, for guiding the radish root into the two U-shaped guide diggers 11 and completing the digging. When the harvester moves forward, since the opening of the U-shaped guide digger 11 faces forward, the radish will first contact the opening part of the front end of the U-shaped guide digger 11, and as the harvester continues to move forward, the radish gradually moves to the inside of the two U-shaped guide diggers 11 under the guidance of the lateral U-shaped structure of the U-shaped guide digger 11, and since the lower end of the U-shaped guide digger 11 is at an inclined angle with the ground, the inclined lower end will penetrate into the soil along the shape and growth direction of the radish root, so as to completely surround the radish root inside the two U-shaped guide diggers 11. In the subsequent digging process, the U-shaped guide digger 11 effectively digs the radish out of the soil through its shape and the inclined angle with the ground, ensuring that the radish root is intact and the whole radish can be smoothly dug out of the soil.

[0033] The upper end of the U-shaped guiding digger 11 is provided with a guide plate 111 connected with the two tensioning belts 23, which is used to guide the dug radishes into the transmission path of the belts. When the radishes are dug by the U-shaped guiding digger 11, the radishes are at the upper end position of the U-shaped guiding digger 11, at this time, the guide plate 111 plays a role. Since the guide plate 111 is connected with the two tensioning belts 23, it provides a transition channel for the radishes from the U-shaped guiding digger 11 to the transmission path of the tensioning belts 23. The guide plate 111 is shaped to match the shape of the radishes, and can fit the surface of the radishes, so that the radishes will not collide or be stuck when entering the guide plate 111 from the U-shaped guiding digger 11. Moreover, the position of the guide plate 111 corresponds to the transmission starting position of the tensioning belts 23, when the radishes move under the guidance of the guide plate 111, they can accurately enter the transmission path of the two tensioning belts 23, thereby realizing the seamless connection of the radishes from digging to transmission. The existence of the guide plate 111 ensures the smooth transition of the radishes from the U-shaped guiding digger 11 to the transmission path of the tensioning belts 23, avoids the jamming or falling phenomenon of the radishes in the transfer process, and improves the smoothness of the whole radish harvesting equipment. Since the guide plate 111 can guide the radishes into the transmission path by fitting the surface of the radishes, the collision and friction between the radishes and the equipment are minimized in this process, thereby reducing the possibility of damage to the radishes during the guiding process, ensuring the quality of the radishes, and the smooth guiding process reduces the failure and adjustment time of the equipment in the radish transmission link. The whole radish harvesting process can be continuously and stably carried out, thereby improving the overall work efficiency of radish harvesting.

[0034] With reference to Figure 1 The guide plate 111 is provided with a misaligned groove 112 misaligned with the driven gear 222, the position and shape of the misaligned groove 112 are designed according to the position and working state of the driven gear 222, and the purpose is to avoid unnecessary interference between the guide plate 111 and the driven gear 222 during work. The main effect of the misaligned groove 112 is to avoid interference between the guide plate 111 and the driven gear 222, which makes the equipment more stable and reliable during operation, reduces the risk of equipment failure caused by collision or interference between parts, and improves the service life of the equipment. Since the interference between the guide plate 111 and the driven gear 222 is avoided, the transmission of the radishes on the guide plate 111 will not be hindered in any way, and the radishes can be smoothly transmitted to the tensioning belts 23 according to the predetermined path, ensuring the continuity of the radish harvesting process and improving the harvesting efficiency.

[0035] In addition, the two U-shaped guiding diggers 11 can also be provided with an electric push-pull mechanism and a spacing sensor group electrically connected to the electric push-pull mechanism, for synchronously driving the two U-shaped guiding diggers 11 to move towards or away from each other to adapt to radishes of different sizes. The main function of the electric push-pull mechanism is to provide power to drive the two U-shaped guiding diggers 11 to move towards or away from each other, which can be set as an electric push rod, etc. Through this moving mode, the spacing between the two U-shaped guiding diggers 11 can be changed to adapt to radishes of different sizes. The spacing sensor group includes a laser ranging sensor and an ultrasonic array for real-time detection of the current spacing and the size of the radish root. When the harvester starts working, the laser ranging sensor and the ultrasonic array in the spacing sensor group start at the same time. The laser ranging sensor accurately measures the distance between the two U-shaped guiding diggers 11 by using the reflection principle of laser. The ultrasonic array detects the space occupied by the radish root between the two U-shaped guiding diggers 11 by emitting and receiving ultrasonic waves, thereby obtaining the size information of the radish root. After receiving the information transmitted by the sensor, the control system analyzes according to the pre-set algorithm. If the detected size of the radish root is large and exceeds the range that can be accommodated by the current spacing between the two U-shaped guiding diggers 11, the control system will issue an instruction to the electric push-pull mechanism to drive the two U-shaped guiding diggers 11 to move away from each other to increase the spacing between them, so as to ensure that the radish root can smoothly enter the inside of the U-shaped guiding digger 11 for digging. Conversely, if the size of the radish root is small, in order to more accurately dig the radish and avoid excessive disturbance to the soil around the radish, the control system will instruct the electric push-pull mechanism to drive the two U-shaped guiding diggers 11 to move towards each other to reduce the spacing between them, so that they better fit the radish root for digging. These sensors will transmit the detected spacing and radish root size information to the control system (which is electrically connected to the electric push-pull mechanism) in real time, so that various sizes of radishes can be effectively adapted, whether they are large or small radish varieties. The harvester can adjust the spacing of the U-shaped guiding diggers 11 through the electric push-pull mechanism, thereby achieving accurate digging and reducing the incomplete digging or damage to the radish caused by the size difference of the radish.

[0036] The driving member 24 is a servo motor. The servo motor can realize various motion modes such as position control, speed control, torque control, etc. through different control modes, and can be flexibly switched according to actual needs to meet the requirements of different application scenarios. Moreover, a permanent magnet synchronous generator can be used to provide power. The permanent magnet synchronous generator has high-efficiency and stable power output characteristics. In a small radish harvester, the permanent magnet synchronous generator can provide continuous and stable power for the transmission gear set 22 to ensure stable operation of the tension belt 23.

[0037] The opposite side of the two tight belts 23 is provided with concave-convex stripes. In the process of radish transmission, the concave-convex stripes increase the friction between the belt and the upper end of the radish. When the radish is excavated by the U-shaped guiding excavator 11 and introduced into the belt transmission path by the guide plate 111, the concave-convex stripes can effectively prevent the upper end of the radish from slipping on the belt, ensuring that the upper end of the radish can be stably transmitted with the belt to the U-shaped separation plate 3 for separation of radish and radish leaves.

[0038] The frame body 1 is made of high-strength aluminum alloy, and the surface is sprayed with a rust-proof coating. High-strength aluminum alloy has the characteristics of light weight and high strength. In this device, this makes the entire equipment easy to move and operate, reducing the labor intensity of the operator. At the same time, its surface is sprayed with a rust-proof coating. Since the harvester often comes into contact with moist soil and air during field work, it is prone to rust. The rust-proof coating can effectively isolate air and moisture, prevent the frame body 1 from rusting, prolong the service life of the equipment, and ensure the reliability and durability of the equipment.

[0039] The hand-held handle 13 is designed as a hollow tubular structure. This structure design ensures that the hand-held handle 13 has sufficient strength while reducing the weight of the hand-held handle 13, making it easier for the operator to hold for a long time. The hollow structure also provides hidden wiring space for some lines of the harvester (such as the lines of the electric push-pull mechanism, the distance sensor group, etc.), making the appearance of the equipment more neat, and reducing the risk of damage to the exposed lines.

[0040] Principle: When the harvester is started, the driving member 24 starts to work, as the driving member 24 is connected with the output shaft of the driving gear 221, the power output of the driving member 24 will drive the driving gear 221 connected therewith to rotate, the rotation of the driving gear 221 drives the driven gear 222 to rotate through the meshing between the gears, in the two groups of transmission gear sets 22, the transmission relationship between the gears makes the whole transmission system run stably; with the coordinated rotation of the driving gear 221 and the driven gear 222, the two tension belts 23 start to run, forming an upper and lower closed transmission path, preparing for the transmission of radish. In the process of moving forward of the harvester, the U-shaped guide digger 11 at the front end of the frame body 1 continuously detects the position of the radish, the U-shaped guide digger 11 can effectively contact the radish in the soil, once the radish is detected, the U-shaped guide digger 11 will use its shape and digging ability to dig the radish out of the soil, the radish leaves at the upper end of the radish dug out are transmitted by the running tension belt 23, and the radish moves with the movement of the belt. In the transmission process, the radish and radish leaves move together with the belt to the position of the U-shaped separation plate 3, as the U-shaped cutout on the U-shaped separation plate 3 is vertically arranged with the transmission surface of the two tension belts 23, the radish will smoothly pass through the U-shaped cutout, because the shape and size of the radish can adapt to the space of the U-shaped cutout, and the radish leaves at the upper end of the radish will be blocked by the U-shaped separation plate 3, so as to realize the separation of the radish and the radish leaves. At this time, the radish without leaves will be separated from the tension belt 23, and the separated radish leaves continue to be transmitted upward until the end of the tension belt 23, and then are separated from the device.

[0041] The above is only the preferred embodiment of the present application, and does not limit the implementation and protection scope of the present application. For those skilled in the art, it should be realized that any equivalent replacement and obvious change made according to the content of the present application should be included in the protection scope of the present application.

Claims

1. A small-sized radish harvester characterized by comprising: Comprising The frame body is provided with two U-shaped guide diggers at the front end for detecting the position of radish and digging radish, four universal wheels are arranged on the bottom periphery, and a hand-held handle is fixedly connected at the rear end; The transmission tensioning mechanism comprises two groups of fixed plates arranged opposite to each other, two groups of transmission gear sets, two tensioning belts and two driving members; wherein the two groups of fixed plates are respectively vertically fixed to the left and right inner side walls of the frame body; the two groups of transmission gear sets are respectively pivotally installed on the corresponding fixed plates, and each group of transmission gear sets comprises a driving gear and a driven gear; the two tensioning belts are respectively wound around the driving gears and the driven gears of the two groups of transmission gear sets in sequence, forming two closed transmission paths; the two tensioning belts are used for clamping and transmitting the radish leaves at the upper end of the radish dug by the U-shaped guide diggers; the two driving members are respectively connected with the output shafts of one group of driving gears, and are used for driving the two groups of transmission gear sets to rotate in opposite directions; and The U-shaped separation plate is fixed between the lower ends of the two groups of fixed plates, and a U-shaped notch provided on the U-shaped separation plate is arranged perpendicular to the transmission surfaces of the two tensioning belts, and is used for separating radish and radish leaves.

2. The baby carrot harvester of claim 1, wherein, The two U-shaped guide diggers are arranged in a U-shaped structure, the opening of which faces forward, and the lower end of the U-shaped guide digger forms an inclined angle with the ground, which is used for guiding the radish roots into the two U-shaped guide diggers and completing deep digging.

3. The baby carrot harvester of claim 1, wherein, The upper end of the U-shaped guide digger is provided with a guide plate connected with the two tensioning belts, which is used for guiding the radish dug out into the belt transmission path.

4. The baby carrot harvester of claim 3, wherein, The guide plate is provided with a misaligned groove misaligned with the driven gear.

5. The baby carrot harvester of claim 1, wherein, The two U-shaped guide diggers are provided with an electric push-pull mechanism and a distance sensor group electrically connected with the electric push-pull mechanism, which are used for synchronously driving the two U-shaped guide diggers to move towards or away from each other to adapt to radishes of different sizes.

6. The baby carrot harvester of claim 5, wherein, The distance sensor group comprises a laser ranging sensor and an ultrasonic array for real-time detection of the current distance and the size of the radish root.

7. The baby carrot harvester of claim 1, wherein, The driving member is a servo motor.

8. The baby carrot harvester of claim 1, wherein, The opposite sides of the two tensioning belts are provided with concave-convex stripes.

9. The baby carrot harvester of claim 1, wherein, The frame body is made of high-strength aluminum alloy, and the surface is sprayed with a rust-proof coating.

10. The baby carrot harvester of claim 1, wherein, The hand-held handle is provided in a hollow tubular structure.

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