Garlic shoot harvester

Abstract

A young garlic shoot harvester comprises a walking machine frame, a young garlic shoot clamping device, a young garlic shoot pulling device, a young garlic shoot drawing device and a young garlic shoot collecting box are sequentially arranged on the walking machine frame from front to back, the young garlic shoot clamping device is used for clamping off garlic stems and leaves at the roots of garlic plants to wrap young garlic shoots, the young garlic shoot pulling device is used for strengthening the young garlic shoots, and a transmission mechanism for driving the young garlic shoot pulling device and the young garlic shoot drawing device to rotate is further arranged on the walking machine frame. The bolting device comprises a bolting rotating wheel rotationally arranged on the walking rack, and paired bolting comb teeth and bolting clamping hands are arranged on the outer side of the bolting rotating wheel in the circumferential direction of the bolting rotating wheel; the bolting clamping hand can receive the righting young garlic shoots in an open state, and can clamp the young garlic shoots and pull out the young garlic shoots along with the rotation of the bolting rotating wheel in a closed state; a pressure sensor capable of feeding back and controlling opening and closing of the bolting clamp when the pressure sensor is in contact with buds of the young garlic shoots in the middle guide groove is arranged at the top of the bolting comb teeth. The young garlic shoot harvester reduces the damage rate to garlic plants in the young garlic shoot taking process, improves the young garlic shoot taking rate and stability, and is suitable for application and popularization.

Description

Technical Field

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

[0002] Garlic is one of the important economic crops in my country, and its planting area, output and export volume rank first in the world. Garlic stalks are one of the vegetables that people like to eat. From a national perspective, the output of garlic stalks has been growing steadily in recent years. The harvesting of garlic stalks is very time-sensitive. If the stalks are not harvested in time, the quality of the garlic stalks and the yield of garlic will be seriously affected. With the large-scale development of garlic planting and the difficulty in hiring workers, garlic farmers are more and more in need of garlic stalk harvesters. When harvesting garlic stalks, it is necessary to minimize the damage to the plants so as not to affect the continued growth of garlic, which requires high mechanized harvesting of garlic stalks.

[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 domestic garlic scape harvesting 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. The following problems may arise during use: (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 harvesting garlic stalks, the best time to harvest is when the stalks are just bent. 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, which cannot guarantee the quality of the stalks. In addition, the garlic leaves may be clamped and damaged. (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 that the bolting clamp is clamped in the bolting area through a cam and opened in the stalk delivery area. Regardless of whether the garlic stalk is clamped, the process of clamping and releasing the stalk will be executed cyclically, which will eventually lead to missing stalks, broken stalks, etc., resulting in a low bolting rate and poor use effect. Summary of the invention

[0004] The purpose of the 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.

[0005] The technical scheme adopted by the present invention is: a garlic stalk harvester, comprising a walking frame, on which a stalk clamping device for clamping garlic stems and leaves at the root of garlic plants to wrap the garlic stalks, a stalk pulling device for straightening the garlic stalks, a stalk bolting device and a stalk collecting box are arranged in sequence from front to back, and a transmission mechanism for driving the stalk pulling device and the stalk bolting device to rotate is also arranged on the walking frame; The bolting device comprises a bolting wheel rotatably arranged on a walking frame, and a pair of bolting comb teeth and bolting grippers are arranged on the outer side of the bolting wheel along its circumference; The bolting gripper can receive the straightened garlic stalk in an open state, and can clamp the garlic stalk in a closed state and pull out the garlic stalk as the bolting rotating wheel rotates; The middle part of the stalk picking comb teeth is provided with a central guide groove for receiving the straightened garlic stalk, 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 contacting with the flower bud of the garlic stalk in the central guide groove.

[0006] As a preferred solution, the bolting clamp includes a cover shell, with two clamping shafts rotatably arranged on the top of the cover shell, the two clamping shafts are meshed and transmitted through the clamping shaft gears in the middle of the cover shell, and the outer ends of the two clamping shafts are provided with clamping plates that rotate with the clamping shafts, and the cover shell has a built-in servo that drives one of the clamping shafts to rotate.

[0007] As a preferred solution, the cover shell is provided with a vibrating spring piece capable of driving the clamping plate to vibrate, and the walking frame is provided with a vibration generating mechanism in vibration contact with the vibrating spring piece.

[0008] As a preferred solution, the middle portion of the vibration spring is rotatably connected to the cover shell via a rotating shaft, a roller is provided at one end of the vibration spring, and the other end extends into the gap between the clamping plate and the cover shell.

[0009] As a preferred solution, the clamping plate is slidably matched 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.

[0010] 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 a main transmission shaft is provided in the isolation bearing. 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.

[0011] As a preferred solution, baffles to prevent accidental touch are provided on the comb teeth for taking stalks on both sides of the pressure sensor.

[0012] As a preferred solution, the stalk clamping device comprises two stalk clamping assemblies which are adjustably fixed on the walking frame, and 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, a connecting plate is fixed at the lower end of the mounting frame, a stalk clamping wheel mounting seat is fixed on the connecting plate, a horizontal stalk clamping wheel is rotatably arranged in the stalk clamping wheel mounting seat, a second stepping motor is fixed on the stalk clamping wheel mounting seat, and an output shaft of the second stepping motor is fixedly connected to the stalk clamping wheel; Gathering guide pieces are arranged opposite to each other on the two clamping stem assemblies.

[0013] As a preferred embodiment, 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-drop claw is fixed on the gathering part of the stalk pushing bar.

[0014] As a preferred embodiment, the central guide groove is in a "V" shape, and its width gradually narrows from the outer end to the end connected to the bolting wheel, and the narrowed end of the central guide groove corresponds to the center position of the bolting clamp when it is in an open state.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The bolting device mainly uses the bolting comb teeth matched with the bolting clamp on the bolting wheel. The pressure sensor on the upper side of the bolting comb teeth contacts the garlic bud and triggers the closing of the bolting clamp, which can prevent the bolting clamp from missing or wrong clamping, and ensure the accuracy and efficiency of bolting.

[0016] 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 rotation speed of the stalk clamping wheels can be adjusted according to the stalks of garlic plants with different growth potentials to ensure that the garlic stalks are clamped off from the inside while reducing damage to the epidermis of the stems.

[0017] 3. A stalk-pulling device for straightening the garlic stalk is arranged 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; The stalk-pulling bar of the stalk-pulling device is designed to be arc-shaped, which can clamp the garlic stalk buds and lift them up. The lifted leaves will slide down naturally, and the entire garlic stalk-pulling and lifting range is large. It also 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 off, anti-drop claws are welded and installed on the arc-shaped stalk-pulling bar to further improve the stalk-pulling effect.

[0018] 4. The two clamps of the bolting clamp can generate a small amplitude vibration when clamping the garlic stem, which can prevent the tensile strain limit of the garlic stem from exceeding the moment the clamp is pulled upward. It also plays a certain buffering role, reduces the bolting force required for bolting, reduces the risk of garlic stem breaking at any position, ensures that the garlic stem breaking point is at the clamping position, the length of the pulled garlic stem is consistent, and the garlic stem is damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. 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 creative work.

[0020] Figure 1 is a schematic diagram of a garlic sprout plant; Figure 2 It is an overall axial side schematic diagram of the present invention; Figure 3 It is a schematic diagram of the walking frame of the present invention; Figure 4 It is a schematic diagram of the clamping device of the present invention; Figure 5 It is a schematic diagram of the bolting device of the present invention; Figure 6 It is a cross-sectional schematic diagram of the bolting device; Figure 7 It is a cross-sectional schematic diagram of the bolting wheel of the present invention; Figure 8 It is a schematic diagram of the bolting clamp of the present invention; Fig. 9 It is a schematic diagram of the vibrating spring piece of the present invention; Fig.10 It is a schematic diagram of the stalk pulling device of the present invention; Fig.11 This is a plan view of the comb teeth of the present invention; Fig.12 It is an axial schematic diagram of the stalk pulling device of the present invention; Fig.13 The figure is a schematic diagram of the cooperation between the stalk comb teeth and the stalk pulling clamp when the present invention is in use.

[0021] Reference numerals: 1. Traveling frame; 101. Frame; 102. Traveling wheel; 103. Rear universal wheel; 104. Traveling motor; 105. Mounting frame for clamping stalk device; 106. Control cabinet; 107. Control switch; 108. Handrail; 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; 3. Stalk pushing device; 301. Stalk pushing wheel, 302. Stalk pushing bar, 303. Gathering part, 304. Anti-drop claw; 4. Bolting device, 401. Bolting wheel, 402. Bolting gripper, 403. Comb teeth for taking stalks, 404. Centering guide groove, 405. Pressure sensor, 406. Collector ring; 407. Anti-mistaken touch baffle, 4021. Cover, 4022. Gripper shaft, 4023. Gripper shaft gear, 4024. Clamp, 4025. Servo; 4026. Spring seat, 4027. Support spring; 5. vibrating spring, 501. rotating shaft, 502. roller, 503. window, 504. guide rail; 6. Vibration generating mechanism, 601. Sleeve, 602. Isolation bearing, 603. Main transmission shaft, 604. Vibration gear, 605. Coupling, 606. First stepper motor; 7. Synchronous wheel; 8. Collection box for sedges. DETAILED DESCRIPTION

[0022] The present invention is described in detail below by way of exemplary embodiments. However, it should be understood that, without further description, elements, structures and features in one embodiment may also be beneficially combined in other embodiments.

[0023] It should be noted that: unless otherwise defined, the technical terms or scientific terms used in this document shall have the usual meanings understood by people with 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 quantity restrictions, but indicate the existence of at least one; the words "first", "second" and "third" used in this document shall not be regarded as restrictions on the order of components, but are only used to distinguish different components; words such as "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.

[0024] In order to more clearly describe the specific structure of the garlic scape harvester, Figure 1-13 Describe this embodiment: A garlic stalk harvester comprises a walking frame 1, on which a stalk clamping device 2 for clamping garlic stems and leaves at the root of a garlic plant to wrap the garlic stalk, a stalk pulling device 3 for straightening the garlic stalk, a bolting device 4 and a stalk collecting box 8 are arranged in sequence from front to back. 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 arranged 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 pulling gripper 402; the stalk pulling 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 pulling 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 pulling gripper 402 when it contacts the flower bud of the garlic stalk in the central guide groove 404; 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 leaf is clamped off or clamped to a state that is easy to pull out. Then the rotating stalk pulling device 3 straightens the garlic stalk in a bent state, and the stalk pulling rotating wheel 401 drives the stalk picking comb teeth 403 and the stalk pulling clamping hand 402 to rotate. The stalk picking comb teeth 403 and the stalk pulling 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 pulling clamping hand 402 in the open state. Fig.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 stalks, which can control 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, thereby ensuring the accuracy and efficiency of bolting. The garlic stalk bud protrudes and swells at the top of the garlic stalk. The bud is a hollow structure, and excessive pressure will flatten it. Therefore, the garlic stalk cannot be directly extracted by using the bud. However, the position of the bud is fixed, so the bud can be used to trigger the pressure sensor to determine the grasping position of the bolting gripper 402 on the garlic stalk, avoiding the force difference caused by different grasping positions on the garlic stalk, ensuring the accuracy of bolting, and also facilitating the extracted garlic stalk to fall into the stalk collecting box 8; See also Fig.11 and Fig.12 The stalk picking comb teeth 403 can be in the shape 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, and the narrowed end of the central guide groove 404 corresponds to the central position of the bolting gripper 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, which is convenient for the bolting gripper 402 to grip. ; 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 on 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 easy to be scratched by the leaves to cause false touch; Anti-mistaken-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-mistaken-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.

[0025] See also Figure 3The walking frame 1 serves as the carrier of the entire harvester and has the functions of walking and steering, and 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 pieces and bolts as a mounting frame 105 for the garlic stalk clamping device. There is a gap between the two aluminum profiles to ensure that the garlic stalks can pass 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, a pulley or a chain, and a sprocket. The two walking wheels 102 are controlled by two different walking motors 104, and the motor generates a speed difference to control the steering of the entire walking frame; 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.

[0026] See also Figure 4 The stalk clamping device 2 includes two stalk clamping assemblies which are adjustably fixed to the walking frame 1, and there is a gap between the two stalk clamping assemblies for the root and stem 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 1 by bolts On the aluminum profile of the stalk device mounting frame 105, the mounting frame 201 and the connecting plate 202, the connecting plate 202 and the stalk clamping wheel mounting seat 203 are all connected by bolts, and waist-shaped holes matched with the bolts are arranged on the mounting frame 201, the connecting plate 202 and the stalk clamping wheel mounting seat 203 to achieve the adjustment of the vertical height or horizontal relative position of the two stalk clamping wheels 204, and the adjustment can adapt to different varieties of garlic. The stalk clamping wheels are driven by two stepping motors respectively. According to the stalks of garlic plants with different growth potentials, the rotation speed of the stalk clamping wheels can be adjusted respectively, so as to ensure that the garlic stalks are clamped off internally while reducing the damage to the epidermis of the stalks; Before use, the height of the stalk clamping wheel 204 is adjusted according to the height adjustment requirements of the variety of garlic plants, and then the two stalk clamping wheels 204 are adjusted so that the minimum distance between the two 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 the two is clamped off from the place where the stems and leaves are wrapped, or is clamped to a state that is easy to be pulled out, which is conducive to the subsequent extraction of the garlic stalk; Gathering guide members are arranged relatively 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.

[0027] See also Fig.10 The stalk pushing device 3 includes a stalk pushing wheel 301 rotatably arranged on the walking frame 1, and the rotation direction of the stalk pushing wheel 301 is opposite to the rotation direction of the bolting wheel 401; a stalk pushing bar 302 is fixed to the outer side of the stalk pushing wheel 301 along its circumference, and the middle part of the stalk pushing bar 302 is bent toward the center line of the stalk pushing wheel 301 to form an arc-shaped gathering part 303. A stalk pushing device for straightening the garlic stalk is arranged 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 pushing bar of the stalk pushing 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, and the entire garlic stalk is grasped and lifted up in a large range, and has a gathering effect on the garlic stalk, which is conducive to aligning the bolting clamp; In order to prevent the garlic scapes from slipping and further improve the scape plucking effect, anti-drop claws 304 are fixed on the gathering part 303 of the scape plucking strips 302 . Exemplarily, four anti-drop claws 304 may be provided and spaced apart on the gathering part 303 .

[0028] See also Figure 8 The bolting gripper 402 can be opened and closed. The bolting gripper 402 specifically includes a cover 4021. Two gripper shafts 4022 are rotatably arranged on the top of the cover 4021. The two gripper shafts 4022 are meshed and driven by the gripper shaft gears 4023 in the middle of the cover 4021. The outer ends of the two gripper shafts 4022 are provided with clamping plates 4024 that rotate with the gripper shafts 4022. The cover 4021 is built with a steering gear 4025 that drives one of the gripper shafts 4022 to rotate. In principle, the steering gear 4025 controls the rotation of one gripper shaft 4022. Since the two gripper shafts 4022 are meshed and connected by the gripper shaft gears 4023, the two clamping plates 4024 can be rotated in opposite directions to achieve opening and closing.

[0029] See also Figure 6 , Figure 7 and Figure 8 The cover 4021 is provided with a vibration spring 5 capable of driving the clamping plate 4024 to vibrate, and the walking frame 1 is provided with a vibration generating mechanism 6 in vibration contact with the vibration spring 5; the two clamping plates can generate a small amplitude vibration when clamping the garlic stalks, so as to prevent the clamping plates from exceeding the tensile strain limit of the garlic stalks at the moment of pulling upwards, and also play a certain buffering role, reducing the bolting force required for bolting, reducing the risk of the garlic stalks breaking at any position, ensuring that the garlic stalk breaking point is at the clamping position, the length of the pulled garlic stalks is consistent and uniform, and the garlic stalks are not damaged; See also Fig. 9 The middle part of the vibration spring piece 5 is rotatably connected to the housing 4021 through a rotating shaft 501. A roller 502 is provided at one end of the vibration spring piece 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 vibration spring piece 5, so that the clamping hand shaft 4022 passes through the window 503 to avoid interference.

[0030] See also Figure 7 In order to ensure that the clamping plate 4024 can vibrate effectively, the clamping plate 4024 is slidably matched with the clamping hand shaft 4022 along its axial direction, so that the clamping plate 4024 has a small vibration space, and an elastic retaining member that is in flexible contact with the clamping plate 4024 is provided in the cover shell 4021. The elastic retaining member limits the position of the clamping plate 4024, on the one hand to avoid separation, and on the other hand to enable the clamping plate 4024 to quickly reset; the upper end of the clamping plate 4024 has a non-circular slot, and the cross-sectional shape of the clamping hand shaft 4022 is adapted thereto, so that the clamping plate 4024 can still rotate with the clamping hand shaft 4022 when sliding in a small range; 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 along the axial direction of the clamping shaft 4022, with one end fixed on the spring seat 4026 and the other end fixed to or abutting against the rotation center of the clamping plate 4024, so as to ensure that the clamping plate 4024 does not separate from the support spring 4027 when rotating; Furthermore, since the clamping plate 4024 has a small range of sliding on the axial direction of the clamping shaft 4022, in order to ensure the stability of the clamping plate 4024 when rotating, an arc-shaped guide rail 504 can be set on the vibration spring piece 5, and 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 the garlic sprouts.

[0031] See also Figure 6 and Figure 7Exemplarily, the vibration generating mechanism 6 includes a sleeve 601, which is fixed at the axial hole at the center of the end face of the bolting wheel 401. The sleeve 601 has a built-in isolation bearing 602. The isolation bearing 602 is provided with a main transmission shaft 603. A vibration gear 604 that is in vibration contact with the roller 502 is fixed at one end of the main transmission shaft 603. 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 are alternately in contact with the roller 502 at one end of the vibration spring piece 5, so that the vibration spring piece 5 swings slightly along the rotating shaft 501, and the other end of the vibration spring piece 5 reciprocates to impact the clamping plate 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 the 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 piece 5 to ensure that the vibration spring piece 5 can be directed toward the clamping plate 4024 when exerting force.

[0032] See also 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, illustratively, 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 transmission 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 transmission gears 903, the reversing shaft 901 and the bolting wheel transmission shaft 902, the bolting wheel transmission shaft 902 and the synchronous wheel 7 are all connected by belts and pulleys; The transmission mechanism also includes a pulley group for driving the stem removing device 3 to rotate. In the front view of 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.

[0033] See also Figure 5 Since the bolting gripper 402 is located in the bolting wheel 401 and rotates therewith, a collector ring 406 is provided on the main transmission shaft 603 , and the servo 4025 of the bolting gripper 402 and the control cabinet 106 are electrically connected through the collector ring 406 .

[0034] The stalk collecting box 8 is placed at the rear end of the walking frame 1. A stalk removing claw with a width smaller than the minimum gap of the stalk removing comb teeth is fixed on the stalk collecting box 8 by bolts. The stalk removing claw itself has no power. The garlic stalks are pulled off by rotating the stalk pulling wheel 401, which facilitates the separation of the garlic stalks from the central guide groove 404.

[0035] The parts not described in detail in the above embodiments are prior art.

[0036] It should be noted that although the present invention is described by 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 deformations to the present invention, but these changes and deformations should all fall within the scope of protection of the appended claims of the present invention and their equivalents.

Claims

1. A garlic stalk harvester, characterized in that: 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 a garlic plant to wrap the garlic stalk, a stalk pulling device (3) for straightening the garlic stalk, 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 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 stem in an open state, and can clamp the garlic stem and pull out the garlic stem as the bolting rotating wheel (401) rotates in a closed state; The middle 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) which can feedback control 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).

2. A garlic stalk harvester according to claim 1, characterized in that: The bolting gripper (402) comprises a cover shell (4021), two gripper shafts (4022) are rotatably arranged on the top of the cover shell (4021), the two gripper shafts (4022) are meshed and driven through gripper shaft gears (4023) in the middle of the two gripper shafts (4022), a clamping plate (4024) that rotates with the gripper shafts (4022) is provided at the outer ends of the two gripper shafts (4022), and a steering engine (4025) that drives one of the gripper shafts (4022) to rotate is built in the cover shell (4021).

3. A garlic stalk harvester according to claim 2, characterized in that: The cover shell (4021) is provided with a vibration spring (5) capable of driving the clamping plate (4024) to generate vibration, and the walking frame (1) is provided with a vibration generating mechanism (6) that is in vibration contact with the vibration spring (5).

4. A garlic stalk harvester according to claim 3, characterized in that: The middle part of the vibration spring piece (5) is rotatably connected to the cover shell (4021) via a rotating shaft (501); a roller (502) is provided at one end of the vibration spring piece (5), and the other end extends into the gap between the clamping plate (4024) and the cover shell (4021).

5. The garlic stalk harvester according to claim 4, characterized in that: The clamping plate (4024) is slidably matched with the clamping shaft (4022) along its axial direction, and the cover shell (4021) has a built-in elastic retaining member that is in flexible contact with the clamping plate (4024).

6. The garlic stalk harvester according to claim 4, characterized in that: The vibration generating mechanism (6) comprises a sleeve (601), the sleeve (601) being fixed at 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 arranged in the isolation bearing (602), a vibration gear (604) being fixed at one end of the main transmission shaft (603) for vibrating 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).

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

8. The garlic scape harvester according to claim 1, characterized in that: The stalk clamping device (2) comprises two stalk clamping assemblies which are adjustably fixed to the walking frame (1), 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 at the lower end of the mounting frame (201), a stalk clamping wheel mounting seat (203) being fixed on 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 on 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.

9. The garlic stalk 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), the rotation direction of the stalk removing wheel (301) being opposite to the rotation direction of a stalk pulling rotating wheel (401); a stalk removing bar (302) is fixed to the outer side of the stalk removing wheel (301) along its circumference, 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 part (303), and an anti-dropping claw (304) is fixed to the gathering part (303) of the stalk removing bar (302).

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

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