Chinese cabbage harvester

Abstract

The utility model relates to a Chinese cabbage harvester which comprises a vehicle body, a cutter body and a roller device are arranged at the front end of the vehicle body, the roller device is arranged above the cutter body, the roller device comprises a middle shaft assembly and a plurality of shifting rod assembly units, and the two ends of the middle shaft assembly are rotationally connected to the vehicle body. The driving lever assembly units are arranged around the circumference of the middle shaft assembly in an array mode, the area between every two adjacent driving lever assembly units can contain Chinese cabbages to be harvested, and the driving lever assembly units rotate along with the middle shaft assembly and push the Chinese cabbages in the harvesting direction so as to cut the roots of the Chinese cabbages. A plurality of shifting rod assembly units can sequentially harvest a plurality of Chinese cabbages in one rotation period, so that the harvesting efficiency of the Chinese cabbages can be improved; according to the Chinese cabbage harvester, the two steps of separating Chinese cabbages from soil and removing the roots of the Chinese cabbages are completed at a time, and effective cutting of the roots of the Chinese cabbages is achieved; and meanwhile, Chinese cabbages can be conveyed to the rear of the cutter body after root cutting, and the Chinese cabbages are prevented from being stacked at the cutter body.

Description

Technical Field

[0001] The utility model relates to the technical field of cabbage harvesting equipment, in particular to a cabbage harvester. Background Art

[0002] With the progress of society, machines are involved in every corner of life. The agricultural economy is the basic economy of our country and the foundation of national development. The popularization of agricultural mechanization has not only improved agricultural productivity, but also reduced the labor cost of agricultural labor. The manufacture of cabbage harvesters is precisely to meet the needs of agricultural modernization for mechanized operations. Cabbage was originally distributed in North China, but with the advancement of national agriculturalization, it is now widely cultivated throughout China. The terrain in the southeastern region of my country is mainly mountainous and hilly, with large terrain undulations, complex environment, and small field area. Cabbage is mainly planted in ridges.

[0003] Some structures of cabbage harvesters are disclosed in existing patents. For example, a cabbage harvester is disclosed in the Chinese utility model patent No. 202020936383.4, which specifically includes a cabbage harvesting device and a shoveling device. The shoveling device is installed in front of the cabbage harvesting device to shovel the cabbage out of the soil, so that the cabbage is gathered in the triangular cabbage collection area formed by the first fixed wheel, the second fixed wheel, the third fixed wheel and the fourth fixed wheel, and the cabbage is harvested by the first harvesting belt and the second harvesting belt. Combined with the drawings in the specification of the patent, it can be seen that the plow hook is at a certain distance from the cabbage collection area. After the cabbage is shoveled away from the soil by the shoveling device, the cabbage may fall over. Then, when the cabbage passes through this area, the root does not penetrate between the first blade and the second blade, that is, the first blade and the second blade cannot effectively remove its root. Utility Model Content

[0004] Therefore, it is necessary to provide a cabbage harvester to solve the problem that the existing cabbage harvester cannot effectively cut off the cabbage roots.

[0005] To achieve the above object, the inventor provides a cabbage harvester, comprising:

[0006] The car body has a knife body at its front end.

[0007] A roller device is arranged above the knife body, the roller device comprises a central axis assembly and a plurality of lever assembly units, both ends of the central axis assembly are rotatably connected to the vehicle body, the plurality of lever assembly units are arranged in a circular array around the central axis assembly, and the area between adjacent lever assembly units can accommodate the cabbage to be harvested, the lever assembly unit comprises a first connecting rod, a second connecting rod, a first fixing plate, a second fixing plate and a lever, one end of the first connecting rod is connected to one end of the central axis assembly, the other end of the first connecting rod is connected to the first fixing plate, one end of the second connecting rod is connected to the other end of the central axis assembly, the other end of the second connecting rod is connected to the second fixing plate, and the lever is connected between the first fixing plate and the second fixing plate;

[0008] The lever assembly unit rotates with the middle shaft assembly and pushes the cabbage along a harvesting direction to cut the root of the cabbage.

[0009] Furthermore, the number of the shifting rods is more than two, and the shifting rods are arranged in parallel with each other at intervals between the first fixing plate and the second fixing plate.

[0010] Furthermore, the two or more shifting rods form a pushing surface toward the knife body, and the pushing surface is inclined from top to bottom along the harvesting direction.

[0011] Furthermore, at least one of the lever outer covers is provided with an anti-slip cover.

[0012] Furthermore, when the lever assembly unit is close to the blade body, the lever with the anti-slip sleeve is farther away from the blade body than the lever without the anti-slip sleeve.

[0013] Furthermore, the lever assembly unit further includes a first spring, a second spring, a first slider and a second slider;

[0014] The first slider is fixed to the first fixing plate, and the first slider and the first spring are both sleeved on the first connecting rod. The first slider slides on the first connecting rod, and the first spring is disposed between the central axis assembly and the first slider. When the slider drives the first fixing plate to slide along the first connecting rod, the first spring is deformed.

[0015] The second slider is fixed on the second fixed plate, and the second slider and the second spring are both mounted on the second connecting rod. The second slider slides on the second connecting rod, and the second spring is disposed between the central axis assembly and the second slider. The second spring is deformed during the sliding of the second fixed plate along the second connecting rod by the slider.

[0016] Further, the first sliding block is arranged on a side of the first fixing plate away from the shifting rod, and the second sliding block is arranged on a side of the second fixing plate away from the shifting rod.

[0017] Furthermore, a first stopper is provided at one end of the first connecting rod away from the middle shaft assembly, and the first stopper is used to prevent the first sliding block from being separated from the first connecting rod;

[0018] A second limiting member is disposed at one end of the second connecting rod away from the central shaft assembly, and the second limiting member is used to prevent the second sliding block from detaching from the second connecting rod.

[0019] Furthermore, the cabbage harvester also includes a one-way needle bearing, and both ends of the central axis assembly are connected to the vehicle body through the one-way needle bearing.

[0020] Furthermore, the number of the lever assembly units is four.

[0021] Different from the prior art, the above technical solution has the following advantages: the cabbage harvester drives the lever assembly unit to rotate by setting a selected central axis assembly, and multiple lever assembly units can harvest multiple cabbages in sequence in one rotation cycle, which helps to improve the harvesting efficiency of cabbage; the cabbage harvester supports the middle part of the cabbage through the lever and pushes it toward the cutter body, and the root and leaf of the cabbage are cut and separated before the cabbage falls over, completing the two steps of separating the cabbage from the soil and removing the cabbage roots at one time, and realizing effective cutting of the cabbage roots; at the same time, the pushing inertia of the lever assembly unit on the cabbage can help the cabbage to be transported to the rear of the cutter body after the roots are cut, so as to avoid the cabbage from piling up at the cutter body. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a side view of a cabbage harvester according to the present embodiment;

[0023] Figure 2 This is a schematic diagram of a cabbage harvester drum device connected to a vehicle body according to this embodiment;

[0024] Figure 3 It is a three-dimensional diagram of a drum device of a cabbage harvester according to the present embodiment;

[0025] Figure 4 It is a side view of a drum device of a cabbage harvester according to the present embodiment;

[0026] Figure 5 It is a three-dimensional diagram of a lever assembly unit of a cabbage harvester according to the present embodiment;

[0027] Description of reference numerals:

[0028] x, harvesting direction;

[0029] 1. Car body;

[0030] 11. Knife body;

[0031] 12. Wheels;

[0032] 13. Ejector rod;

[0033] 2. Roller device;

[0034] 21. Middle shaft assembly;

[0035] 211, central axis;

[0036] 2121, first fastener;

[0037] 2122, second fastener;

[0038] 22. lever assembly unit;

[0039] 2211, first connecting rod;

[0040] 2212, second connecting rod;

[0041] 2221, first fixing plate;

[0042] 2222, second fixing plate;

[0043] 223. lever;

[0044] 224, anti-slip cover;

[0045] 2251, first spring;

[0046] 2252, second spring;

[0047] 2261, first slider;

[0048] 2262, second slider;

[0049] 2271, first stopper;

[0050] 3. One-way needle roller bearing. DETAILED DESCRIPTION

[0051] In order to explain in detail the possible application scenarios, technical principles, specific schemes that can be implemented, and the purposes and effects that can be achieved, the following is a detailed description of the specific embodiments listed in conjunction with the accompanying drawings. The embodiments described herein are only used to more clearly illustrate the technical solutions of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0052] Reference to "embodiment" herein means that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present application. The term "embodiment" appearing in various places in the specification does not necessarily refer to the same embodiment, nor does it particularly limit its independence or association with other embodiments. In principle, in the present application, as long as there is no technical contradiction or conflict, the various technical features mentioned in the embodiments can be combined in any way to form a corresponding implementable technical solution.

[0053] Unless otherwise defined, the technical terms used in this document have the same meanings as those generally understood by those skilled in the art to which this application belongs; the use of relevant terms in this document is only for describing specific embodiments and is not intended to limit this application.

[0054] In the description of this application, the term "and / or" is an expression used to describe the logical relationship between objects, indicating that three relationships may exist, for example, A and / or B, which means: A exists, B exists, and A and B exist at the same time. In addition, the character " / " in this article generally indicates that the objects before and after are in an "or" logical relationship.

[0055] In the present application, terms such as “first” and “second” are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship of quantity, priority or sequence between these entities or operations.

[0056] Without further limitations, in this application, the words "include", "comprises", "has" or other similar expressions used in the sentences are intended to cover non-exclusive inclusion. These expressions do not exclude the presence of additional elements in the process, method or product including the elements, so that the process, method or product including a series of elements may include not only those limited elements, but also other elements not explicitly listed, or also include elements inherent to such process, method or product.

[0057] Similar to the understanding in the Examination Guidelines, in this application, expressions such as "greater than", "less than", "exceed" and the like are understood to exclude the number itself; expressions such as "above", "below", "within" and the like are understood to include the number itself. In addition, in the description of the embodiments of this application, "multiple" means more than two (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups", "multiple times", etc., unless otherwise clearly and specifically limited.

[0058] In the description of the embodiments of the present application, space-related expressions used, such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "vertical", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or position relationship based on the orientation or position relationship shown in the specific embodiments or drawings, and are only for the convenience of describing the specific embodiments of the present application or facilitating the reader's understanding, and do not indicate or imply that the referred device or component must have a specific position, a specific orientation, or be constructed or operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0059] Unless otherwise expressly specified or limited, in the description of the embodiments of the present application, the terms such as "install", "connect", "connect", "fix", "set", etc. used should be understood in a broad sense. For example, the "connection" can be a fixed connection, a detachable connection, or an integrated setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For technicians in the technical field to which the present application belongs, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0060] See also Figures 1 to 5 , this embodiment is a cabbage harvester, comprising:

[0061] The car body 1 has a knife body 11 at its front end.

[0062] A roller device 2 is arranged above the blade body 11, the roller device 2 comprises a central axis assembly 21 and a plurality of lever assembly units 22, both ends of the central axis assembly 21 are rotatably connected to the vehicle body 1, the plurality of lever assembly units 22 are arranged in a circular array around the central axis assembly 21, and the area between adjacent lever assembly units 22 can accommodate the cabbage to be harvested, the lever assembly unit 22 comprises a first connecting rod 2211, a second connecting rod 2212, a first fixing plate 2221, a second fixing plate 2222 and a lever 223, one end of the first connecting rod 2211 is connected to one end of the central axis assembly 21, the other end of the first connecting rod 2211 is connected to the first fixing plate 2221, one end of the second connecting rod 2212 is connected to the other end of the central axis assembly 21, the other end of the second connecting rod 2212 is connected to the second fixing plate 2222, and the lever 223 is connected between the first fixing plate 2221 and the second fixing plate 2222;

[0063] The lever assembly unit 22 rotates with the central shaft assembly 21 and pushes the cabbage along the harvesting direction x to cut the root of the cabbage.

[0064] The body 1 of the cabbage harvester is equipped with a power system, which can drive the body 1 forward. Of course, in some embodiments, the cabbage harvester can also be driven by manual power. The blade of the cutter body 11 faces forward. When the lever assembly unit 22 pushes the cabbage toward the cutter body 11, and as the body 1 moves forward, the leaves and roots of the cabbage are cut by the cutter body 11. The ridge-planted cabbage is harvested by the cabbage harvester. As the body 1 moves forward and the roller device 2 rotates, one cabbage is harvested each time. The size of the cutter body 11 corresponds to the width of one cabbage.

[0065] The middle shaft assembly 21 is laterally connected to the front of the vehicle body 1. The middle shaft assembly 21 includes a middle shaft 211 and a first fastener 2121 and a second fastener 2122 at both ends thereof. The lever assembly unit 22 can be installed on the first fastener 2121 and the second fastener 2122. The two ends of the middle shaft 211 are connected to the vehicle body 1. The middle shaft 211 can rotate around its central axis direction as the rotation center. The cabbage cutting machine has two use states. One is that as the vehicle body 1 moves forward, the cabbage pushes the light rod to move forward in the direction of the cutter body 11. In the following embodiment with a one-way needle bearing 3, the cabbage will be smoothly pushed into the vehicle body 1 under the action of the one-way needle bearing 3; the other is that the power element drives the middle shaft 211, and the rotation of the middle shaft 211 drives the lever assembly unit 22 to support the cabbage in, and at the same time, the cutter body 11 moves forward with the vehicle body 1 to cut the root of the cabbage.

[0066] The rotation of the central axis assembly 21 drives each lever assembly unit 22 to rotate accordingly, and each lever assembly unit 22 rotates around the central axis of the central axis assembly 21, that is, rotates around the central axis of the central axis 211. The lever 223 is arranged in parallel with the central axis 211, and the area between the adjacent lever assembly units 22 can meet the height requirement of the cabbage, that is, by setting the length of the first connecting rod 2211 and the second connecting rod 2212, a certain distance is provided between the lever 223 and the central axis 211. During the rotation of the lever assembly unit 22, the lever 223 can bypass the top of the cabbage and then support the middle of the cabbage to push the cabbage toward the blade 11.

[0067] The harvesting direction refers to the direction opposite to the direction in which the vehicle body 1 moves.

[0068] The lever 223 is generally made of a stainless steel tube, and has a smooth surface, so that the lever 223 will not damage the surface of the cabbage during the process of pushing the cabbage.

[0069] The vehicle body 1 is provided with four wheels 12, and the cutter body 11 has a certain height from the bottom of the wheels 12. The wheels 12 will run in the furrows, so that the cutter body 11 can harvest the cabbages on the ridge surface.

[0070] The cabbage harvester drives the lever assembly unit 22 to rotate by setting a selected central axis assembly 21. Multiple lever assembly units 22 can harvest multiple cabbages in sequence in one rotation cycle, which helps to improve the harvesting efficiency of cabbage; the cabbage harvester supports the middle part of the cabbage through the lever 223 and pushes it to the cutter body 11, and cuts and separates the root and leaf of the cabbage before the cabbage falls, completing the two steps of separating the cabbage from the soil and removing the cabbage roots at one time, and realizing effective cutting of the cabbage roots; at the same time, the pushing inertia of the lever assembly unit 22 on the cabbage can help the cabbage to be transported to the rear of the cutter body 11 after the root is cut, so as to avoid the cabbage from piling up at the cutter body 11.

[0071] like Figures 2 to 5 As shown, in some embodiments, the number of the levers 223 is more than two, and the levers 223 are arranged in parallel between the first fixing plate 2221 and the second fixing plate 2222. Both ends of each lever 223 are connected and fixed to the first fixing plate 2221 and the second fixing plate 2222, and the first fixing plate 2221 and the second fixing plate 2222 are arranged in parallel and maintain a certain distance. Multiple levers 223 can provide a push force to multiple parts of the cabbage, so as to prevent the cabbage from flipping from the top of the lever 223 to the outside of the cabbage harvester after the lever 223 pushes, or to prevent the cabbage from escaping from the bottom of the lever 223 to the outside of the cabbage harvester. The contact position between the lever 223 and the cabbage is generally located in the middle of the cabbage, and the middle of the cabbage refers to the area close to its center along its height direction. The hardness of the middle of the cabbage is relatively large, which is convenient for the lever 223 to push and apply force.

[0072] like Figure 2 As shown, in some embodiments, two or more of the push rods 223 form a push surface toward the blade 11, and the push surface is inclined from top to bottom along the harvesting direction. The push surface is actually a virtual surface, which can be a plane or a curved surface, and specifically refers to the structure after the contact parts of each push rod 223 and the cabbage are connected when the cabbage is pushed by the push rod 223. Along the harvesting direction of the cabbage, the end of the push surface facing the outside of the cabbage harvester is higher than the end facing the inside of the cabbage harvester, so that the cabbage is in an inclined state after entering the drum device 2. Specifically, the central axis of the cabbage and the inclined angle of the harvesting direction are 55-65°. The root of the cabbage reaches the position of the blade 11 first, and the blade 11 cuts into the root of the cabbage. At this time, the leaves of the cabbage are still against the push rod 223, and the push rod 223 continues to push the cabbage and exert force on the cabbage. As the vehicle body 1 moves forward, the root and the leaf of the cabbage are successfully cut and separated.

[0073] In some embodiments, at least one of the levers 223 is covered with an anti-slip cover 224. The anti-slip cover 224 can be made of rubber or silicone. The anti-slip cover 224 is a tubular structure adapted to the lever 223. The anti-slip cover 224 is sleeved on the lever 223. When the lever 223 pushes the cabbage, the lever 223 sleeved with the anti-slip cover 224 has a greater friction force with the cabbage. At the same time, the anti-slip cover 224 is squeezed and deformed during the pushing process to increase the contact area with the cabbage, so as to prevent the cabbage from slipping from the lever assembly unit 22 and then detaching from the cabbage harvester.

[0074] In some embodiments, when the lever assembly unit 22 is close to the blade body 11, the lever 223 with the anti-slip sleeve 224 is farther from the blade body 11 than the lever 223 without the anti-slip sleeve. That is, when the cabbage harvester is working, the lever 223 with the anti-slip sleeve 224 in the lever assembly unit 22 that is in push contact with the cabbage is farther from the blade body 11 than the lever 223 without the anti-slip sleeve. That is, in the embodiment where part of the lever 223 is covered with the anti-slip sleeve, the lever 223 near the root of the cabbage is not covered with the anti-slip sleeve 224, and the lever 223 near the middle of the cabbage is covered with the anti-slip sleeve 224. During the process of the lever assembly unit 22 pushing the cabbage, the anti-slip sleeve 224 provides a greater friction force on the middle surface of the cabbage, so that the lever assembly unit 22 provides an effective pushing force on the cabbage.

[0075] like Figures 2 to 5 As shown, in some embodiments, the lever assembly unit 22 further includes a first spring 2251, a second spring 2252, a first slider 2261 and a second slider 2262;

[0076] The first slider 2261 is fixed on the first fixing plate 2221, and the first slider 2261 and the first spring 2251 are both sleeved on the first connecting rod 2211. The first slider 2261 slides on the first connecting rod 2211, and the first spring 2251 is disposed between the central axis assembly 21 and the first slider 2261. When the slider drives the first fixing plate 2221 to slide along the first connecting rod 2211, the first spring 2251 is deformed.

[0077] The second slider 2262 is fixed on the second fixed plate 2222, and the second slider 2262 and the second spring 2252 are both mounted on the second connecting rod 2212. The second slider 2262 slides on the second connecting rod 2212, and the second spring 2252 is disposed between the central axis assembly 21 and the second slider 2262. The slider drives the second fixed plate 2222 to slide along the second connecting rod 2212, and the second spring 2252 is deformed.

[0078] The elastic coefficient and length of the first spring 2251 and the second spring 2252 are the same, so that the elastic force of the first spring 2251 on the first slider 2261 and the elastic force of the second spring 2252 on the second slider 2262 are relatively consistent. The first slider 2261 is provided with a first slider 2261 through hole, and there is a clearance fit between the first slider 2261 through hole and the first connecting rod 2211. The first slider 2261 can slide along the first connecting rod 2211 with the first fixed block, and the first spring 2251 will be compressed or restored to its original deformation during the sliding process; similarly, the second slider 2262 is provided with a second slider 2262 through hole, and there is a clearance fit between the second slider 2262 through hole and the second connecting rod 2212. The second slider 2262 can slide along the second connecting rod 2212 with the second fixed block, and the second spring 2252 will be compressed or restored to its original deformation during the sliding process.

[0079] In this embodiment, by providing the first spring 2251, the second spring 2252, the first slider 2261 and the second slider 2262, when the lever 223 hits the top of the cabbage, or the lever 223 does not push the cabbage from the side, since the cabbage does not accurately enter between two adjacent lever assembly units 22, the lever 223 will drive the first fixed block and the second fixed block to slide toward the central axis 211, that is, the first slider 2261 on the first fixed block will compress the first spring 2251 along the first connecting rod 2211, and similarly, the second slider 2262 on the second fixed block will compress the second spring 2252 along the second connecting rod 2212. When the drum device 2 continues to rotate to the position of leaving the cabbage, the pressing force of the cabbage on the lever 223 is removed, the first slider 2261 is restored to the initial position by the elastic force of the first spring 2251, and the second slider 2262 is also restored to the initial position by the elastic force of the second spring 2252. In this embodiment, a control system is provided in the cabbage cutting machine, and the control system is electrically connected to the power system of the vehicle body 1. The control system includes a sensor provided on the lever assembly unit 22. When the sensor senses that the first spring 2251 and the second spring 2252 are squeezed, the control system controls the vehicle body 1 to stop moving forward. During this process, the roller device 2 continues to rotate until the cabbage is pushed by the next lever assembly unit 22, and then the power system of the vehicle body 1 is started to move forward to cut the roots of the cabbage.

[0080] like Figure 1 , Figure 2 As shown, in some embodiments, the cabbage cutting machine further includes a push rod 13 vertically connected to the vehicle body 1, the push rod 13 is located behind the drum device 2, and after the lever assembly unit 22 pushes the cabbage to the root and cuts it, the push rod 223 will be squeezed by the push rod 13 and move toward the central axis 211 so that the cabbage is dumped into the vehicle body 1. In some embodiments, there are two push rods 13, which are respectively located on both sides of the vehicle body 1, and the two push rods 13 squeeze both sides of the push rod 223 to compress the first spring 2251 and the second spring 2252. Since the push rod 223 is limited by the push rod 13, the cabbage can no longer be pushed into the vehicle body 1, and when the vehicle body 1 continues to move forward, the rear of its blade 11 still contacts and rubs against the bottom of the cabbage, so the top of the cabbage will dump toward the inside of the vehicle body 1 to obtain a more stable posture to facilitate its subsequent transportation operation.

[0081] like Figures 2 to 5As shown, in some embodiments, the first slider 2261 is disposed on a side of the first fixing plate 2221 away from the lever 223, and the second slider 2262 is disposed on a side of the second fixing plate 2222 away from the lever 223. Between the first fixing plate 2221 and the second fixing plate 2222 is an area for pushing the cabbage, and the first slider 2261 and the second slider 2262 are disposed outside the area, which can effectively prevent the first slider 2261 and the second slider 2262 from damaging the surface of the cabbage during the process of pushing the cabbage by the lever 223.

[0082] like Figures 2 to 5 As shown, in some embodiments, a first stopper 2271 is provided at one end of the first connecting rod 2211 away from the central axis assembly 21, and the first stopper 2271 is used to prevent the first slider 2261 from being separated from the first connecting rod 2211. A second stopper (not shown in the figure) is provided at one end of the second connecting rod 2212 away from the central axis assembly 21, and the second stopper is used to prevent the second slider 2262 from being separated from the second connecting rod 2212. The side of the first slider 2261 that faces away from the first spring 2251 can abut against the first limiting member 2271. In this state, the first slider 2261 is in the initial state and the first spring 2251 can also be in the original length state. When the first spring 2251 is compressed by the first slider 2261 and released, the first spring 2251 pops out of the first slider 2261, and the first slider 2261 is restricted by the first limiting member 2271 and will not detach from the first connecting rod 2211; similarly, the side of the second slider 2262 that faces away from the second spring 2252 can abut against the second limiting member. In this state, the second slider 2262 is in the initial state and the second spring 2252 can also be in the original length state. When the second spring 2252 is compressed by the second slider 2262 and released, the second spring 2252 pops out of the second slider 2262, and the second slider 2262 is restricted by the second limiting member and will not detach from the second connecting rod 2212.

[0083] like Figure 3 , Figure 4 As shown, in some embodiments, the cabbage harvester further includes a one-way needle bearing 3, and both ends of the middle shaft assembly 21 are connected to the vehicle body 1 through the one-way needle bearing 3. When the lever 223 hits the top of the cabbage, or the lever 223 does not push the cabbage from the side, the cabbage will actually exert a squeezing force on the lever 223. After the one-way needle bearing 3 is provided, the roller device 2 will only continue to rotate forward, and then the first spring 2251, the second spring 2252 and other structures are used to avoid the lever assembly unit 22 from damaging the cabbage, thereby preventing the cabbage from being cut unsuccessfully or falling off after cutting the root. The success rate of cabbage harvesting is guaranteed, and the efficiency of cabbage harvesting is improved.

[0084] like Figures 1 to 5 As shown, in some embodiments, there are four lever assembly units 22. That is, the angle between the first connecting rods 2211 of adjacent lever assembly units 22 is nearly 90°, and similarly, the angle between the second connecting rods 2212 of adjacent lever assembly units 22 is nearly 90°. This helps to orderly select cabbages through the lever assembly units 22 during harvesting, thereby improving the success rate of cabbage harvesting.

[0085] Finally, it should be noted that although the above embodiments have been described in the specification and drawings of this application, this does not limit the scope of patent protection of this application. All technical solutions generated by replacing or modifying equivalent structures or equivalent processes based on the essential concept of this application using the contents recorded in the specification and drawings of this application, as well as directly or indirectly implementing the technical solutions of the above embodiments in other related technical fields, are included in the scope of patent protection of this application.

Claims

1. A cabbage harvester, characterized in that: include: The car body has a knife body at its front end. A roller device is arranged above the knife body, the roller device comprises a central axis assembly and a plurality of lever assembly units, both ends of the central axis assembly are rotatably connected to the vehicle body, the plurality of lever assembly units are arranged in a circular array around the central axis assembly, and the area between adjacent lever assembly units can accommodate the cabbage to be harvested, the lever assembly unit comprises a first connecting rod, a second connecting rod, a first fixing plate, a second fixing plate and a lever, one end of the first connecting rod is connected to one end of the central axis assembly, the other end of the first connecting rod is connected to the first fixing plate, one end of the second connecting rod is connected to the other end of the central axis assembly, the other end of the second connecting rod is connected to the second fixing plate, and the lever is connected between the first fixing plate and the second fixing plate; The lever assembly unit rotates with the middle shaft assembly and pushes the cabbage along a harvesting direction to cut the root of the cabbage.

2. The cabbage harvester according to claim 1, characterized in that: The number of the shifting rods is more than two, and the shifting rods are arranged in parallel and at intervals between the first fixing plate and the second fixing plate.

3. The cabbage harvester according to claim 2, characterized in that: More than two of the shifting rods form a push surface toward the knife body, and the push surface is inclined from top to bottom along the harvesting direction.

4. The cabbage harvester according to claim 2 or 3, characterized in that: At least one of the lever outer covers is provided with an anti-slip cover.

5. The cabbage harvester according to claim 4, characterized in that: When the lever assembly unit is close to the blade body, the lever with the anti-slip sleeve is farther away from the blade body than the lever without the anti-slip sleeve.

6. The cabbage harvester according to claim 1, characterized in that: The lever assembly unit further includes a first spring, a second spring, a first slider and a second slider; The first slider is fixed to the first fixing plate, and the first slider and the first spring are both sleeved on the first connecting rod. The first slider slides on the first connecting rod, and the first spring is disposed between the central axis assembly and the first slider. When the slider drives the first fixing plate to slide along the first connecting rod, the first spring is deformed. The second slider is fixed on the second fixed plate, and the second slider and the second spring are both mounted on the second connecting rod. The second slider slides on the second connecting rod, and the second spring is disposed between the central axis assembly and the second slider. The second spring is deformed during the sliding of the second fixed plate along the second connecting rod by the slider.

7. The cabbage harvester according to claim 6, characterized in that: The first sliding block is arranged on a side of the first fixing plate away from the shifting rod, and the second sliding block is arranged on a side of the second fixing plate away from the shifting rod.

8. The cabbage harvester according to claim 6, characterized in that: A first stopper is provided at one end of the first connecting rod away from the middle shaft assembly, and the first stopper is used to prevent the first sliding block from being separated from the first connecting rod; A second limiting member is disposed at one end of the second connecting rod away from the central shaft assembly, and the second limiting member is used to prevent the second sliding block from detaching from the second connecting rod.

9. The cabbage harvester according to claim 1, characterized in that: The cabbage harvester also includes a one-way needle bearing, and both ends of the central shaft assembly are connected to the vehicle body through the one-way needle bearing.

10. The cabbage harvester according to claim 1, characterized in that: The number of the lever assembly units is four.

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