Garlic sprout harvester

Abstract

A garlic stalk harvester comprises a walking frame, on which are arranged, from front to back, a stalk clamping device for clamping garlic stems and leaves at the root of the garlic plant to wrap the garlic stalks, a stalk pulling device for straightening the garlic stalks, a bolting device and a stalk collecting box. The walking frame is also provided with a transmission mechanism for driving the stalk pulling device and the bolting device to rotate; the bolting device comprises a bolting wheel rotatably arranged on the walking frame, and a bolting wheel is arranged on the outer side of the bolting wheel along the Paired stalk-picking combs and bolting grippers are arranged around the circumference of the machine. The bolting grippers, when open, receive straightened garlic stalks. When closed, they clamp the stalks and extract them as the bolting wheel rotates. The central portion of the stalk-picking combs features a central guide groove for receiving straightened garlic stalks. Pressure sensors, located at the tops of the stalk-picking combs, provide feedback control of the bolting grippers' opening and closing when they come into contact with the buds of the garlic stalks within the central guide groove. This garlic stalk harvester reduces damage to garlic plants during the harvesting process, improves bolting efficiency, and enhances stability, making it suitable for widespread use.

Description

Technical Field

[0001] The present invention relates to the technical field of agricultural machinery, in particular to a garlic sprout harvester. Background Art

[0002] Garlic is one of my country's important cash crops, ranking first worldwide in terms of cultivated area, yield, and export volume. Garlic stalks are a popular vegetable, and nationwide, garlic stalk production has been steadily increasing in recent years. Harvesting garlic stalks is highly time-sensitive; failure to harvest them promptly can severely impact both stalk quality and yield. With the expansion of garlic cultivation and the difficulty of hiring labor, garlic farmers are increasingly demanding garlic stalk harvesters. Harvesting garlic stalks requires minimal damage to the plants to prevent them from continuing to grow, which places high demands on mechanized harvesting.

[0003] like Figure 1 As shown in the figure, garlic plants can be roughly divided into several parts from top to bottom, including involucre s1, scape s2, leaf s3, pseudostem s4, bulb s5 and fibrous root s6. At present, the harvesting of garlic scapes in China is mainly done manually, and the main harvesting methods include scape clipping, scape tying and scape cutting. Many domestic scholars have designed corresponding garlic scape harvesters based on the principle of manual scape harvesting. However, the following problems may arise during use:

[0004] (1) Garlic stalks are the flower stems of garlic plants. There are flower buds on the top of the stalks. According to the agronomic requirements for garlic stalk harvesting, the best time to harvest is when the stalks are just bent. However, since the stalks are mixed with the garlic leaves when they are bent, and the bending direction is disordered, it is difficult to accurately clamp the stalks when they are bolting. This cannot guarantee the quality of the stalks and may also clamp the garlic leaves and damage them.

[0005] (2) The bolting device is the core part of the garlic stalk harvesting machinery. Whether it is installed on a chain or on a bolting wheel, the existing technology adopts a mechanical clamping method. The principle is to clamp the bolting clamp in the bolting area through a cam and open the bolting clamp in the stalk delivery area. Regardless of whether the garlic stalk is clamped or not, the process of clamping and releasing the stalk will be executed cyclically, which will eventually lead to missed stalks, broken stalks, etc., resulting in a low bolting rate and poor use effect. Summary of the Invention

[0006] The purpose of the present invention is to provide a garlic stalk harvester, which reduces the damage rate to garlic plants during the stalk removal process, improves the bolting rate and stability, and is suitable for popularization and use.

[0007] The technical solution adopted by the present invention is: a garlic stalk harvester, comprising a traveling frame, on which are arranged, from front to back, a stalk clamping device for clamping garlic stems and leaves at the root of the garlic plant to wrap the garlic stalks, a stalk pulling device for straightening the garlic stalks, a stalk bolting device, and a stalk collecting box; the traveling frame is also provided with a transmission mechanism for driving the stalk pulling device and the stalk bolting device to rotate;

[0008] The bolting device includes a bolting wheel rotatably arranged on a traveling frame, and a pair of bolting comb teeth and bolting clamps are arranged on the outer side of the bolting wheel along its circumference;

[0009] The bolting gripper can receive the straightened garlic stalk in the open state, and can clamp the garlic stalk in the closed state and pull out the garlic stalk as the bolting wheel rotates;

[0010] The middle part of the stalk picking comb teeth is provided with a central guide groove for receiving the straightened garlic stalks, and the top of the stalk picking comb teeth is provided with a pressure sensor which can feedback control the opening and closing of the stalk picking clamp when it contacts the flower bud of the garlic stalk in the central guide groove.

[0011] As a preferred solution, the bolting gripper includes a cover shell, and two gripper shafts are rotatably arranged on the top of the cover shell. The two gripper shafts are engaged and transmitted through the gripper shaft gears in the middle of the cover shell. The outer ends of the two gripper shafts are provided with clamping plates that rotate with the gripper shafts, and the cover shell has a built-in servo that drives one of the gripper shafts to rotate.

[0012] As a preferred solution, the cover is provided with a vibrating spring piece capable of driving the splint to vibrate, and the walking frame is provided with a vibration generating mechanism in vibration contact with the vibrating spring piece.

[0013] As a preferred solution, the middle portion of the vibrating spring is rotatably connected to the cover via a rotating shaft, a roller is provided at one end of the vibrating spring, and the other end extends into the gap between the splint and the cover.

[0014] As a preferred solution, the clamping plate is in sliding cooperation with the clamping shaft along its axial direction, and the cover shell has a built-in elastic retaining member that is in flexible contact with the clamping plate.

[0015] As a preferred solution, the vibration generating mechanism includes a sleeve, which is fixed at the axial hole in the center of the end face of the bolting wheel. The sleeve has a built-in isolation bearing, and the isolation bearing is provided with a main transmission shaft. A vibration gear that is in vibration contact with the roller is fixed at one end of the main transmission shaft, and the other end of the main transmission shaft is connected to the output shaft of the first stepper motor on the walking frame through a coupling.

[0016] As a preferred solution, baffles are provided on the comb teeth on both sides of the pressure sensor to prevent accidental touch.

[0017] As a preferred solution, the stalk clamping device includes two stalk clamping assemblies adjustably fixed to the traveling frame, with a gap between the two stalk clamping assemblies for the root of the garlic plant to pass through;

[0018] Each stalk clamping assembly includes a mounting frame, a connecting plate is fixed to the lower end of the mounting frame, a stalk clamping wheel mounting seat is fixed to the connecting plate, a horizontal stalk clamping wheel is rotatably arranged in the stalk clamping wheel mounting seat, a second stepper motor is fixed to the stalk clamping wheel mounting seat, and an output shaft of the second stepper motor is fixedly connected to the stalk clamping wheel;

[0019] Gathering guide pieces are arranged opposite to each other on the two clamping stem assemblies.

[0020] As a preferred solution, the stalk-pushing device includes a stalk-pushing wheel rotatably arranged on a walking frame, and the rotation direction of the stalk-pushing wheel is opposite to the rotation direction of the stalk-pulling wheel; a stalk-pushing bar is fixed on the outer side of the stalk-pushing wheel along its circumference, and the middle part of the stalk-pushing bar is bent toward the center line of the stalk-pushing wheel to form an arc-shaped gathering part, and an anti-slip claw is fixed on the gathering part of the stalk-pushing bar.

[0021] As a preferred solution, the central guide groove is "V"-shaped, and its width gradually narrows from the outer end to the end connected to the bolting wheel. The narrowed end of the central guide groove corresponds to the center position of the bolting clamp when it is in the open state.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. The bolting device mainly uses the bolting comb teeth on the bolting wheel that are paired with the bolting clamp. The pressure sensor on the upper side of the bolting comb teeth contacts the garlic buds, triggering the closing of the bolting clamp, which can prevent the bolting clamp from missing or wrong clamping, ensuring the accuracy and efficiency of bolting.

[0024] 2. The height of the stalk clamping device and the spacing of the stalk clamping wheels are adjustable to adapt to different varieties of garlic. The stalk clamping wheels are driven by two stepper motors respectively. The speed of the stalk clamping wheels can be adjusted according to the different growth rates of garlic plant stems to ensure that the garlic stalks are clamped off from the inside while reducing damage to the stem epidermis.

[0025] 3. A stalk-pulling device for straightening the garlic stalk is provided on the front side of the bolting device, which is conducive to the bolting gripper of the bolting device to accurately grasp the garlic stalk;

[0026] The stalk-pulling device has an arc-shaped stalk-pulling bar that can grab the garlic stalk buds and lift them up. The lifted leaves slide down naturally, and the entire garlic stalk-pulling device has a large range of grabbing and lifting, and has a gathering effect on the garlic stalks, which is conducive to aligning the stalk-pulling clamp. In order to prevent the garlic stalks from sliding, anti-slip claws are welded and installed on the arc-shaped stalk-pulling bar to further improve the stalk-pulling effect.

[0027] 4. The two clamps of the bolting clamp can generate a small amplitude vibration when clamping the garlic stalk, which prevents the tensile strain limit of the garlic stalk from exceeding the instant the clamp is pulled upward. It also plays a certain buffering role, reducing the bolting force required for bolting, reducing the risk of garlic stalk breaking at any position, ensuring that the garlic stalk breaking point is at the clamping position, the length of the pulled garlic stalk is consistent, and the garlic stalk is damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0029] Figure 1 This is a schematic diagram of a garlic sprout plant;

[0030] Figure 2 It is an overall axial side schematic diagram of the present invention;

[0031] Figure 3 It is a schematic diagram of the walking frame of the present invention;

[0032] Figure 4 Schematic diagram of the clamping device of the present invention;

[0033] Figure 5 Schematic diagram of the bolting device of the present invention;

[0034] Figure 6 This is a cross-sectional diagram of the bolting device;

[0035] Figure 7 Schematic cross-section of the bolting wheel of the present invention;

[0036] Figure 8 This is a schematic diagram of the bolting clamp of the present invention;

[0037] Figure 9 A schematic diagram of a vibrating shrapnel according to the present invention;

[0038] Figure 10 Schematic diagram of the stalk-pulling device of the present invention;

[0039] Figure 11 This is a schematic plan view of the comb teeth of the present invention;

[0040] Figure 12 This is an axial schematic diagram of the stalk-pulling device of the present invention;

[0041] Figure 13 The figure is a schematic diagram of the cooperation between the stalk-pulling comb teeth and the stalk-pulling clamp when the present invention is in use.

[0042] Reference numerals:

[0043] 1. Traveling frame; 101. Frame, 102. Traveling wheels, 103. Rear universal wheels, 104. Traveling motor, 105. Mounting frame for clamping device, 106. Control cabinet, 107. Control switch, 108. Handrail;

[0044] 2. Stalk clamping device; 201. Mounting frame, 202. Connecting plate, 203. Stalk clamping wheel mounting seat, 204. Stalk clamping wheel, 205. Second stepping motor, 206. Guide guard plate, 207. Guide gathering plate;

[0045] 3. Stalk pushing device; 301. Stalk pushing wheel, 302. Stalk pushing bar, 303. Gathering part, 304. Anti-slip claw;

[0046] 4. Bolting device, 401. Bolting wheel, 402. Bolting gripper, 403. Stalk removal comb, 404. Centering guide groove, 405. Pressure sensor, 406. Collector ring; 407. Anti-accidental touch baffle, 4021. Cover, 4022. Gripper shaft, 4023. Gripper shaft gear, 4024. Clamp, 4025. Servo; 4026. Spring seat, 4027. Support spring;

[0047] 5. Vibrating shrapnel, 501. Rotating shaft, 502. Roller, 503. Window, 504. Guide rail;

[0048] 6. Vibration generating mechanism, 601. Sleeve, 602. Isolation bearing, 603. Main transmission shaft, 604. Vibration gear, 605. Coupling, 606. First stepper motor;

[0049] 7. Synchronous wheel;

[0050] 8. Collection box for sedges. DETAILED DESCRIPTION

[0051] The present invention is described in detail below by way of exemplary embodiments. However, it should be understood that elements, structures, and features in one embodiment may also be beneficially combined in other embodiments without further description.

[0052] It should be noted that: unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning understood by persons having ordinary skills in the field to which the invention belongs. The words "one", "an" or "the" and the like used in the patent application specification and claims of the present invention do not express a quantity limitation, but indicate the existence of at least one; the words "first", "second" and "third" used herein shall not be regarded as a limitation on the order of components, but are only used to distinguish different components; the words "include" or "comprise" and the like indicate that the elements or objects appearing before "include" or "comprise" include the elements or objects listed after "include" or "comprise" and their equivalents, but do not exclude other elements or objects with the same function.

[0053] In order to more clearly describe the specific structure of the garlic scape harvester, Figure 1-13 Describe this embodiment:

[0054] A garlic stalk harvester comprises a walking frame 1, on which are arranged, from front to back, a stalk clamping device 2 for clamping garlic stems and leaves at the root of the garlic plant to wrap the garlic stalks, a stalk pulling device 3 for straightening the garlic stalks, a bolting device 4 and a stalk collecting box 8. The walking frame 1 is also provided with a transmission mechanism for driving the stalk pulling device 3 and the bolting device 4 to rotate; the bolting device 4 comprises a bolting wheel 401 rotatably arranged on the walking frame 1, and a bolting wheel 401 is provided on the outer side of the bolting wheel 401 along its circumference. The present invention provides a pair of stalk-picking comb teeth 403 and a stalk-picking gripper 402; the stalk-picking gripper 402 can receive the straightened garlic stalk in the open state, and can clamp the garlic stalk and pull out the garlic stalk as the stalk-picking rotating wheel 401 rotates in the closed state; the middle of the stalk-picking comb teeth 403 has a central guide groove 404 for receiving the straightened garlic stalk, and the top of the stalk-picking comb teeth 403 has a pressure sensor 405 that can feedback control the opening and closing of the stalk-picking gripper 402 when it contacts the flower bud of the garlic stalk in the central guide groove 404;

[0055] During use, the walking frame 1 is controlled to move along the planting direction of the garlic plant. The root of the garlic plant first passes through the stalk clamping device 2, so that the lower side of the garlic stalk in the garlic stem and leaves is clamped off or clamped to a state that is easy to pull out. Then the rotating stalk pulling device 3 straightens the bent garlic stalk, and the stalk-taking wheel 401 drives the stalk-taking comb teeth 403 and the stalk-taking clamping hand 402 to rotate. The stalk-taking comb teeth 403 and the stalk-taking clamping hand 402 successively receive the garlic stalk from bottom to top, and the garlic stalk falls into the central guide groove 404 and the stalk-taking clamping hand 402 in the open state. Figure 13 As shown, the stalk-picking comb teeth 403 slide along the garlic stalks until the pressure sensor 405 at the top contacts the bud of the garlic stalk, which controls the bolting gripper 402 to close and grab the garlic stalks. When the garlic stalks rotate to the top of the stalk collecting box 8 as the bolting wheel 401 rotates, the bolting gripper 402 returns to the open state, and the garlic stalks fall into the stalk collecting box 8. By reasonably setting sensors to control the bolting gripper 402, missed and wrong clamping can be avoided, ensuring the accuracy and efficiency of bolting.

[0056] The garlic bud protrudes and swells at the top of the garlic bud. The bud is a hollow structure and will be flattened by excessive pressure. Therefore, the garlic bud cannot be directly used to extract the garlic bud. However, the position of the bud is fixed. Therefore, the bud can be used to trigger the pressure sensor to determine the grasping position of the bolting gripper 402 on the garlic bud, avoiding the force difference caused by different grasping positions on the garlic bud, ensuring the accuracy of bolting, and also facilitating the extracted garlic bud to fall into the bud collecting box 8.

[0057] See Figure 11 and Figure 12The stalk picking comb teeth 403 can be in the form of a sheet as a whole, and their length direction is roughly along the radial direction of the bolting wheel 401; the central guide groove 404 is roughly in the shape of a "V", and its width gradually narrows from the outer end to the end connected to the bolting wheel 401. The narrowed end of the central guide groove 404 corresponds to the center position of the bolting clamp 402 when it is in the open state. After receiving the garlic stalk, the garlic stalk position is moved to the middle area along the axial direction of the bolting wheel 401 to facilitate the clamping of the bolting clamp 402 The width of the narrowed end is slightly larger than the diameter of the upper part of the garlic stalk and smaller than the diameter of the flower bud. After the garlic stalk falls into the central guide groove 404, it slides to the narrowed end as the central guide groove 404 rotates, so that the flower bud of the garlic stalk is pressed against the upper side of the narrowed end, thereby triggering the pressure sensor. The pressure sensor 405 covers at least both sides of the narrowed end to ensure effective contact with the flower bud of the garlic stalk. Specifically, a sheet-type pressure sensor can be selected, which has a certain sensitivity and is not prone to scratching with leaves and causing accidental contact.

[0058] Anti-accidental-touch baffles 407 are provided on the stalk-picking comb teeth 403 on both sides of the pressure sensor 405; the height of the anti-accidental-touch baffles 407 is higher than the height of the installation side of the pressure sensor 405 to prevent the messy leaves of the garlic stalk from accidentally touching the sensor.

[0059] See Figure 3 The walking frame 1 serves as the carrier of the entire harvester and has the functions of walking and steering. It mainly includes a frame part and a walking part. The frame part is welded into a frame 101 by 4 50x50x1000 load-bearing square steels, 2 50x50x250 connecting square steels, and 8 50x50x200 supporting square steels. Two 50x50x110 aluminum profiles are installed at the front end through standard angle fittings and bolts as the garlic stalk clamping device mounting frame 105. There is a gap between the two aluminum profiles to ensure that the garlic stalks pass through horizontally. The walking part includes a walking wheel 102 arranged on the front side of the bottom of the frame 101 and a rear universal wheel 103 on the rear side, as well as a walking motor 104 on the top of the frame 101. The output shaft of the walking motor 104 drives the walking wheel 102 to rotate through a transmission method of a belt, pulley or chain, and a sprocket. The two walking wheels 102 are controlled by two different walking motors 104. The motor generates a speed difference to control the steering of the entire walking frame.

[0060] The walking frame 1 also has a control cabinet 106, a control switch 107, an armrest 108 and a power supply. The armrest 108 is located at the rear end of the frame and close to the control switch 107. The control switch 107 is connected to and controls electrical components such as motors through the control cabinet 106.

[0061] See Figure 4The stalk clamping device 2 includes two stalk clamping assemblies which are adjustable and fixed to the walking frame 1. There is a gap between the two stalk clamping assemblies for the root of the garlic plant to pass through; each stalk clamping assembly includes a mounting frame 201, a connecting plate 202 is fixed to the lower end of the mounting frame 201, a stalk clamping wheel mounting seat 203 is fixed to the connecting plate 202, a horizontal stalk clamping wheel 204 is rotatably arranged in the stalk clamping wheel mounting seat 203, a second stepping motor 205 is fixed to the stalk clamping wheel mounting seat 203, and the output shaft of the second stepping motor 205 is fixedly connected to the stalk clamping wheel 204; the mounting frame 201 is fixed to the clamping frame by bolts On the aluminum profile of the stalk device mounting frame 105, the mounting frame 201 and the connecting plate 202, and the connecting plate 202 and the stalk clamping wheel mounting seat 203 are all connected by bolts. Waist-shaped holes that cooperate with the bolts are provided on the mounting frame 201, the connecting plate 202 and the stalk clamping wheel mounting seat 203 to achieve adjustment of the vertical height or horizontal relative position of the two stalk clamping wheels 204. This adjustment can adapt to different varieties of garlic. The stalk clamping wheels are driven by two stepping motors respectively. The rotation speed of the stalk clamping wheels can be adjusted according to the different growth of garlic plant stems, ensuring that the garlic stalks are clamped internally while reducing damage to the stem epidermis.

[0062] Before use, the height of the stalk clamping wheel 204 is adjusted according to the height of the garlic plant variety. Then, the two stalk clamping wheels 204 are adjusted so that the minimum distance between them is smaller than the diameter of the garlic stalk. The two stalk clamping wheels 204 rotate relative to each other, and the garlic stalk passing between them is clamped off from the place where the stems and leaves are wrapped, or is clamped to a state that is easy to pull out, which is convenient for subsequent extraction of the garlic stalk.

[0063] Gathering guide members are relatively arranged on the two stalk clamping assemblies. The gathering guide members are wide in front and narrow in the rear in the traveling direction of the walking frame 1, which is conducive to the garlic stalks within a certain width range to enter between the two stalk clamping wheels 204 to avoid omission; illustratively, the gathering guide members include a guide guard plate 206 on the mounting frame 201 and a guide gathering plate 207 at the front end of the stalk clamping wheel mounting seat 203.

[0064] See Figure 10 The stalk-pulling device 3 includes a stalk-pulling wheel 301 rotatably mounted on the walking frame 1, and the rotation direction of the stalk-pulling wheel 301 is opposite to the rotation direction of the bolting wheel 401; a stalk-pulling bar 302 is fixed to the outer side of the stalk-pulling wheel 301 along its circumference, and the middle part of the stalk-pulling bar 302 is bent toward the center line of the stalk-pulling wheel 301 to form an arc-shaped gathering portion 303. A stalk-pulling device for straightening the garlic stalk is provided on the front side of the bolting device, which is conducive to the bolting clamp of the bolting device to accurately grasp the garlic stalk; the stalk-pulling bar of the stalk-pulling device is designed to be arc-shaped, which can clamp the garlic stalk bud and lift it up, and the lifted leaves slide down accordingly, so the entire garlic stalk lifting and grasping range is large, and it has a gathering effect on the garlic stalk, which is conducive to aligning the bolting clamp;

[0065] In order to prevent the garlic scapes from slipping and further improve the scape plucking effect, anti-slip claws 304 are fixed on the gathering part 303 of the scape plucking strip 302 . For example, four anti-slip claws 304 can be provided and spaced apart on the gathering part 303 .

[0066] See Figure 8 The bolting gripper 402 can be opened and closed. The bolting gripper 402 specifically includes a housing 4021. Two gripper shafts 4022 are rotatably mounted on the top of the housing 4021. The two gripper shafts 4022 are meshed and driven by a gripper shaft gear 4023 in the middle of the housing. Clamps 4024 are provided at the outer ends of the two gripper shafts 4022, rotating along with the gripper shafts 4022. The housing 4021 has a built-in servo 4025 that drives one of the gripper shafts 4022 to rotate. In principle, the servo 4025 controls the rotation of one gripper shaft 4022. Since the two gripper shafts 4022 are meshed and connected by the gripper shaft gear 4023, the two clamps 4024 can rotate in opposite directions to achieve opening and closing.

[0067] See Figure 6 、 Figure 7 and Figure 8 The cover 4021 is provided with a vibrating spring piece 5 that can drive the clamping plate 4024 to vibrate, and the walking frame 1 is provided with a vibration generating mechanism 6 that is in vibration contact with the vibrating spring piece 5; the two clamping plates can generate a small amplitude vibration when clamping the garlic stalk, so as to prevent the tensile strain limit of the garlic stalk from exceeding when the clamping plates are pulled upward, and also play a certain buffering role, thereby reducing the bolting force required for bolting, reducing the risk of the garlic stalk breaking at any position, ensuring that the breaking point of the garlic stalk is at the clamping position, the length of the pulled garlic stalk is consistent, and the garlic stalk is damaged;

[0068] See Figure 9 The middle portion of the vibrating spring 5 is rotatably connected to the housing 4021 via a rotating shaft 501. A roller 502 is provided at one end of the vibrating spring 5, and the other end extends into the gap between the clamping plate 4024 and the housing 4021. In the specific design, a through window 503 is provided on the vibrating spring 5, allowing the gripper shaft 4022 to pass through the window 503 to avoid interference.

[0069] See Figure 7 In order to ensure that the splint 4024 can vibrate effectively, the splint 4024 is made to slide and cooperate with the clamping shaft 4022 along its axial direction, so that the splint 4024 has a small vibration space. An elastic retainer that is in flexible contact with the splint 4024 is provided in the cover 4021. The elastic retainer limits the position of the splint 4024, on the one hand to prevent it from detaching, and on the other hand to enable the splint 4024 to be quickly reset; the upper end of the splint 4024 has a non-circular slot, and the cross-sectional shape of the clamping shaft 4022 is adapted thereto, so that the splint 4024 can still rotate with the clamping shaft 4022 when sliding within a small range;

[0070] The elastic retaining member may specifically be a spring seat 4026 and a support spring 4027; the spring seat 4026 is fixed in the bolting wheel 401, and the support spring 4027 is axially arranged along the clamping shaft 4022, with one end fixed to the spring seat 4026 and the other end fixed to or abutting the rotation center of the clamping plate 4024, thereby ensuring that the clamping plate 4024 does not separate from the support spring 4027 during rotation;

[0071] Furthermore, since the clamping plate 4024 slides in a small range axially on the clamping shaft 4022, in order to ensure the stability of the clamping plate 4024 as it rotates, an arc-shaped guide rail 504 can be set on the vibrating spring piece 5. The center of the guide rail is at the rotation center of the clamping plate 4024, and a corresponding arc-shaped slide groove is set on the clamping plate 4024. Under the action of the guide rail, the clamping plate 4024 is more stable when clamping garlic sprouts.

[0072] See Figure 6 and Figure 7 , exemplarily, the vibration generating mechanism 6 includes a sleeve 601, which is fixed at the axial hole in the center of the end face of the bolting wheel 401, and the sleeve 601 has a built-in isolation bearing 602. The isolation bearing 602 is provided with a main transmission shaft 603, and one end of the main transmission shaft 603 is fixed with a vibration gear 604 that is in vibration contact with the roller 502, and the other end of the main transmission shaft 603 is connected to the output shaft of the first stepper motor 606 on the walking frame 1 through a coupling 605. In this vibration mode, the vibration gear 604 is driven to rotate by an external motor, and the tooth tips and adjacent tooth grooves of the vibration gear 604 alternately contact the roller 502 at one end of the vibration spring 5, so that the vibration spring 5 swings slightly along the rotating shaft 501, and the other end of the vibration spring 5 reciprocates to impact the splint 4024 of the bolting clamp 402; the first stepper motor 606 transmits power to the vibration gear 604 through the main transmission shaft 603; the main transmission shaft 603 and the bolting wheel 401 are separated by an isolation bearing 602 to prevent the transmission from affecting the rotation of the bolting wheel 401; the rotation direction of the main transmission shaft 603 is set according to the installation method of the vibration spring 5 to ensure that the vibration spring 5 can be directed towards the splint 4024 when exerting force.

[0073] See Figure 5 The transmission mechanism includes a transmission assembly 9. The rotation of the bolting wheel 401 is realized by the transmission assembly 9 between the synchronous wheel 7 and the main transmission shaft 603. For example, the synchronous wheel 7 is fixed on the sleeve 601. The transmission assembly 9 includes a reversing shaft 901, a bolting wheel transmission shaft 902, a transfer gear 903 and a transmission belt 904. The reversing shaft 901, the bolting wheel transmission shaft 902 and the main transmission shaft 603 are arranged in parallel. The reversing shaft 901 and the main transmission shaft 603 are connected by two transfer gears 903. The reversing shaft 901 and the bolting wheel transmission shaft 902, and the bolting wheel transmission shaft 902 and the synchronous wheel 7 are all connected by belts and pulleys.

[0074] The transmission mechanism also includes a pulley group for driving the stem removing device 3 to rotate. In the front view shown in the figure, the stem removing wheel 403 rotates clockwise, and the rotation direction of the stem removing device 3 is opposite to that of the stem removing wheel 403.

[0075] See Figure 5 Since the bolting gripper 402 is located in the bolting wheel 401 and rotates therewith, a slip ring 406 is provided on the main transmission shaft 603 , and the servo 4025 of the bolting gripper 402 is electrically connected to the control cabinet 106 through the slip ring 406 .

[0076] The stalk collecting box 8 is placed at the rear end of the walking frame 1, and a stalk removing claw with a width smaller than the minimum gap between the stalk removing comb teeth is fixed on the stalk collecting box 8 by bolts. The stalk removing claw itself has no power and the garlic stalks are removed by rotating the stalk pulling wheel 401, making it convenient for the garlic stalks to be separated from the central guide groove 404.

[0077] Parts not described in detail in the above embodiments are prior art.

[0078] It should be noted that although the present invention has been described with reference to the above embodiments, the present invention may also have other various embodiments. Without departing from the spirit and scope of the present invention, it is obvious that those skilled in the art may make various corresponding changes and modifications to the present invention, and such changes and modifications shall fall within the scope of protection of the appended claims and their equivalents.

Claims

1. A garlic sprout harvester, characterized by: The invention comprises a walking frame (1), on which are arranged, from front to back, a stalk clamping device (2) for clamping garlic stems and leaves at the root of the garlic plant to wrap the garlic stalks, a stalk-pulling device (3) for straightening the garlic stalks, a stalk-bolting device (4), and a stalk-collecting box (8); the walking frame (1) is also provided with a transmission mechanism for driving the stalk-pulling device (3) and the stalk-bolting device (4) to rotate; The bolting device (4) comprises a bolting wheel (401) rotatably arranged on a walking frame (1), and a pair of bolting comb teeth (403) and bolting grippers (402) are arranged on the outer side of the bolting wheel (401) along its circumference. The bolting gripper (402) can receive the straightened garlic scape in an open state, and can clamp the garlic scape in a closed state and pull out the garlic scape as the bolting wheel (401) rotates; The middle portion of the stalk picking comb teeth (403) is provided with a central guide groove (404) for receiving the straightened garlic stalk, and the top of the stalk picking comb teeth (403) is provided with a pressure sensor (405) capable of feedback-controlling the opening and closing of the stalk picking gripper (402) when in contact with the flower bud of the garlic stalk in the central guide groove (404); The bolting gripper (402) comprises a housing (4021), two gripper shafts (4022) are rotatably arranged on the top of the housing (4021), the two gripper shafts (4022) are meshed and driven by gripper shaft gears (4023) in the middle of the two gripper shafts (4022), and a clamping plate (4024) is provided at the outer ends of the two gripper shafts (4022) and rotates with the gripper shafts (4022). The housing (4021) has a built-in steering gear (4025) that drives one of the gripper shafts (4022) to rotate. The cover shell (4021) is provided with a vibration spring (5) capable of driving the splint (4024) to generate vibration, and the walking frame (1) is provided with a vibration generating mechanism (6) in vibration contact with the vibration spring (5); The middle portion of the vibrating shrapnel (5) is rotatably connected to the housing (4021) via a rotating shaft (501); a roller (502) is provided at one end of the vibrating shrapnel (5), and the other end extends into the gap between the clamping plate (4024) and the housing (4021); an arc-shaped guide rail (504) is provided on the vibrating shrapnel (5), the center of the guide rail (504) being located at the rotation center of the clamping plate (4024); and an arc-shaped sliding groove corresponding to the guide rail (504) is provided on the clamping plate (4024); The clamping plate (4024) is slidably engaged with the clamping shaft (4022) along its axial direction, and the housing (4021) has a built-in elastic retaining member that is in flexible contact with the clamping plate (4024); the elastic retaining member comprises a spring seat (4026) and a support spring (4027), and the spring seat (4026) is fixed in the bolting wheel (401); the support spring (4027) is axially arranged along the clamping shaft (4022), with one end fixed to the spring seat (4026) and the other end fixed to or in contact with the rotation center of the clamping plate (4024); The vibration generating mechanism (6) comprises a sleeve (601), the sleeve (601) being fixed to an axial hole at the center of the end face of the bolting wheel (401), the sleeve (601) having a built-in isolation bearing (602), a main transmission shaft (603) being provided in the isolation bearing (602), a vibration gear (604) being fixed at one end of the main transmission shaft (603) in vibration contact with the roller (502), and the other end of the main transmission shaft (603) being connected to an output shaft of a first stepper motor (606) on the walking frame (1) via a coupling (605).

2. The garlic sprout harvester according to claim 1, characterized in that: Anti-accidental-touch baffles (407) are provided on the stalk-taking comb teeth (403) on both sides of the pressure sensor (405).

3. The garlic sprout harvester according to claim 1, characterized in that: The stalk clamping device (2) comprises two stalk clamping assemblies fixed on the walking frame (1) in an adjustably manner, and a gap is provided between the two stalk clamping assemblies for the root of the garlic plant to pass through; Each stalk clamping assembly comprises a mounting frame (201), a connecting plate (202) being fixed to the lower end of the mounting frame (201), a stalk clamping wheel mounting seat (203) being fixed to the connecting plate (202), a horizontal stalk clamping wheel (204) being rotatably arranged in the stalk clamping wheel mounting seat (203), a second stepping motor (205) being fixed to the stalk clamping wheel mounting seat (203), and an output shaft of the second stepping motor (205) being fixedly connected to the stalk clamping wheel (204); Gathering guide pieces are arranged opposite to each other on the two clamping stem assemblies.

4. The garlic sprout harvester according to claim 1, characterized in that: The stalk removing device (3) comprises a stalk removing wheel (301) rotatably arranged on a walking frame (1), wherein the rotation direction of the stalk removing wheel (301) is opposite to the rotation direction of the stalk pulling wheel (401); a stalk removing bar (302) is fixed to the outer side of the stalk removing wheel (301) along its circumference, and the middle part of the stalk removing bar (302) is bent toward the center line of the stalk removing wheel (301) to form an arc-shaped gathering portion (303), and an anti-slip claw (304) is fixed to the gathering portion (303) of the stalk removing bar (302).

5. The garlic sprout harvester according to claim 1, characterized in that: The central guide groove (404) is V-shaped, and its width gradually narrows from the outer end to the end connected to the bolting wheel (401). The narrowed end of the central guide groove (404) corresponds to the center position of the bolting clamp (402) when it is in an open state.

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