A pepper picking roller and a pepper harvester

Abstract

The invention relates to a pepper picking roller and a pepper harvester, comprising a central shaft, at least one group of variable diameter outer rollers and picking spring teeth; the central shaft is used to drive the variable diameter outer rollers and the picking spring teeth to rotate around itself; the variable diameter outer rollers, the radius of which changes linearly along the length direction, one group of variable diameter outer rollers is two, and the cross-sections are symmetrically distributed on the periphery of the central shaft in a V-shaped manner; the picking spring teeth are evenly distributed along the circumferential direction of the periphery of the variable diameter outer rollers; because the invention is provided with at least one group of profiling outer rollers, after assembling two profiling outer rollers in one group, a V-shaped profiling structure similar to the appearance of a pepper tree can be formed; firstly, because the shape is similar to the appearance of the pepper tree, the impact of the picking rollers on the pepper tree during the picking process can be effectively reduced, and the pepper tree can be prevented from lodging; secondly, the radii at various locations of the structure are different, which can effectively reduce the linear speed of the picking spring teeth at the top of the pepper tree, and further reduce the damage caused to the pepper tree by the picking rollers during the picking process.

Description

Technical Field

[0001] The invention relates to the field of agricultural machinery, in particular to a pepper picking roller. Background Art

[0002] Pepper is one of the vegetables with the largest planting area and output in my country. Its harvesting is divided into mechanical harvesting and manual harvesting: manual harvesting is generally based on the difference in regional labor force, and is accompanied by differences. Generally speaking, the cost of manual harvesting of pepper is 600-1000 yuan, and due to the short harvesting window period, the harvesting cost increases year by year; mechanical harvesting is efficient and low-cost, and can meet the requirements of the harvesting window period. Therefore, the quality of pepper harvesting machinery greatly affects the planting area of ​​pepper, and then affects the development of the entire pepper industry chain. The picking parts of pepper harvesters used in my country include snap-finger type, comb-finger type, spiral type, etc. Among them, the spiral type is mostly vertical or inclined structure, relying on the gap between the spiral roller movement to pick peppers, and the operation efficiency is low. The comb-finger or snap-finger structure is generally a cylindrical picking roller with comb fingers or snap fingers evenly distributed on it. It does not need to be aligned when working, and relies on the gap between the comb-finger spring teeth for picking. Generally, the picking roller has a fast working speed, and the picking process has a large impact on the pepper fruit, resulting in a high breakage rate. Although improvements have been made to the structures of the snap-finger and comb-finger types, using flexible materials or flexible connections instead of the original rigid connections, the flexible materials or structures cannot significantly reduce the loss rate because the rotation radius is a fixed value and the rotation centrifugal force is much greater than the picking force. The use of mechanization has improved the efficiency of picking peppers, but problems such as high breakage rate and low picking rate during the harvesting of peppers have hindered the promotion of pepper harvesters to a certain extent. There are fewer types of pepper picking rollers in China, which has hindered the promotion and application of pepper harvesters.

[0003] Therefore, designing a pepper picking roller that can reduce the impact on the pepper tree while ensuring the picking effect is a technical problem that needs to be solved urgently in the field. Summary of the invention

[0004] In order to solve at least one of the above technical problems, the present invention provides a pepper picking roller.

[0005] The present invention is implemented as follows: a pepper picking roller comprises a central axis, at least one group of variable diameter outer rollers and picking spring teeth; the central axis is used to drive the variable diameter outer rollers and the picking spring teeth to rotate around itself; the variable diameter outer rollers are symmetrically distributed on the periphery of the central axis with a V-shaped cross-section; and the radius of the variable diameter outer roller changes linearly along the length direction; the picking spring teeth are evenly distributed along the circumferential direction of the outer periphery of the variable diameter outer roller.

[0006] Optionally, the radius of the variable diameter outer roller varies in the range of 60 mm to 500 mm.

[0007] Optionally, the inside of the variable diameter outer roller is a hollow structure.

[0008] Optionally, the reducing outer roller and the central shaft are fitted in an interference fit.

[0009] Optionally, the picking spring teeth are in an L-shape.

[0010] Optionally, the bending direction of the picking spring teeth is consistent with the rotation direction of the central axis.

[0011] Optionally, the picking spring teeth and the variable diameter outer roller are connected by threaded connection.

[0012] Optionally, the plane at the end of the picking spring tooth is an arc surface.

[0013] Optionally, the gap distance between the picking spring teeth is 50mm-100mm.

[0014] On the other hand, a pepper harvester includes a harvester body and a pepper picking roller; the harvester body includes an engine, a conveyor belt, wheels and a picking roller mounting platform; the pepper picking roller is located on the picking roller mounting platform, and the pepper picking roller is the above-mentioned pepper picking roller.

[0015] The beneficial technical effects of implementing the present invention are as follows: since the present invention is provided with at least one group of contoured outer rollers, after assembling two contoured outer rollers in one group, a V-shaped contoured structure similar to the appearance of a chili tree can be formed; firstly, since the shape is similar to the appearance of the chili tree, the impact of the picking rollers on the chili tree during the picking process can be effectively reduced, preventing the chili tree from falling over; secondly, the different radii at various locations of the structure can effectively reduce the linear speed of the picking spring teeth at the top of the chili tree, further reducing the damage caused to the chili tree by the picking rollers during the picking process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is the installation schematic diagram of the present invention;

[0017] Figure 2 This is a schematic diagram of the installation of the picking spring teeth of the present invention;

[0018] Figure 3 It is a schematic diagram of the operation of the present invention. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] It should be noted that if the embodiments of the present invention involve directional indications, such as up, down, left, right, front, back, etc., then the directional indication is only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly. In addition, if the embodiments of the present invention involve descriptions of "first, second", "S1, S2", "step one, step two", etc., then such descriptions are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of indicated technical features or indicating the execution order of the method, etc. Those skilled in the art can understand that anything that does not violate the gist of the invention under the technical concept of the invention should be included in the protection scope of the present invention.

[0021] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0022] like Figure 1-3 As shown, the present invention provides a pepper picking roller, comprising a central axis 1, at least one group of variable diameter outer rollers 2 and picking spring teeth 3; the central axis 1 is used to drive the variable diameter outer rollers 2 and the picking spring teeth 3 to rotate around itself; the variable diameter outer rollers 2 are symmetrically distributed on the periphery of the central axis 1 with a V-shaped cross-section; and the radius of the variable diameter outer rollers 2 changes linearly along the length direction; the picking spring teeth 3 are evenly distributed along the circumferential direction of the outer periphery of the variable diameter outer roller 2.

[0023] For example, when picking peppers on a pepper tree, since the variable diameter outer roller 2 is symmetrically installed on the periphery of the central axis 1 with a V-shaped cross-section, the variable diameter outer roller 2 will form an inverted V-shaped motion trajectory below the axis of the central axis 1 when rotating with the central axis 1. At this time, the central axis 1 moves horizontally to the top of the pepper tree. In space, the shape of the pepper tree is similar to a V-shape. At this time, the inverted V-shaped motion trajectory formed by the variable diameter outer roller 2 during transmission will be consistent with the shape of the pepper tree, and the picking spring teeth 3 located on the periphery of the variable diameter outer roller 2 will only contact the ends of the branches and trunks of the pepper tree, reducing the impact on the main body of the pepper tree and achieving protection for the pepper tree; secondly, according to the linear velocity formula "linear velocity = angular velocity * radius", when the angular velocity is the same, the radius becomes smaller and the linear velocity will decrease. Therefore, the linear velocity of the picking spring teeth 3 located at the small radius position of the variable diameter outer roller 2 will decrease, and the corresponding position is exactly the top position of the pepper tree, which is also the position most easily damaged by the picking spring teeth 3. Reducing the linear velocity of the picking spring teeth 3 here is beneficial to protecting the pepper tree.

[0024] The key points of the present invention are, firstly, utilizing the different radii of the variable diameter outer roller 2 at different locations along the length direction to form an inverted V-shaped motion trajectory during its rotation, and then utilizing the inverted V-shaped motion trajectory to match the V-shaped shape of the pepper tree, thereby reducing the impact of the picking roller on the pepper tree while ensuring the pepper picking effect, thereby achieving protection of the pepper tree; secondly, by changing the radius of the variable diameter outer roller 2, the linear speed of the outer picking spring teeth 3 thereof is reduced, thereby reducing the damage of the picking spring teeth 3 to the peppers, thereby ensuring the pepper picking effect in one step.

[0025] It is worth noting that in this embodiment, only the inverted V-shaped motion trajectory of the variable diameter outer roller 2 is limited, but the specific dimensions such as the span and depth of the motion trajectory are not limited. In other words, the specific dimensions such as the span and depth of the inverted V-shaped motion trajectory formed by the variable diameter outer roller 2 can be arbitrarily set by technical personnel in this field according to actual conditions.

[0026] It is worth noting that in this embodiment, only one group of two variable diameter outer rollers 2 is used as an example, and their specific number is not limited. That is to say, the number of variable diameter outer rollers 2 can be one group or more groups, and the specific number can be arbitrarily set by technical personnel in this field according to actual use needs.

[0027] Preferably, power drive wheels 4 for driving the central shaft 1 to rotate are provided at both ends of the central shaft 1 .

[0028] For example, during the picking process, the power driving wheel 4 is connected to a power source such as an engine to drive the central shaft 1 to rotate, and drive the variable diameter outer roller 2 and the picking spring teeth 3 to move.

[0029] Preferably, the radius of the variable diameter outer roller 2 varies in the range of 60 mm to 500 mm.

[0030] Specifically, since the height and branch length of each pepper tree are different, it is necessary to optimize the radius of the variable diameter outer roller 2 to ensure the picking effect of peppers. For this purpose, this embodiment provides a preferred implementation scheme.

[0031] For example, after analyzing the heights and branch lengths of a large number of pepper trees, it was found that the height difference between the top of the pepper tree and the bottom layer of fruits is about 460mm. At the same time, in order to ensure the structural strength of the variable outer roller 2 itself, the minimum diameter of the variable outer roller 2 should be above 60mm. Accordingly, the radius variation range of the variable outer roller 2 is set in the range of 60mm-500mm. Within this range, the inverted V-shaped motion trajectory formed by the movement of the variable outer roller 2 can be highly consistent with the existing pepper shape, and under the premise of ensuring the pepper picking effect, it can minimize the impact on the main body of the pepper tree and achieve protection of the pepper tree.

[0032] Preferably, the inside of the variable diameter outer roller 2 is a hollow structure. Preferably, the variable diameter outer roller is in a frustum shape, and after being processed by spinning of steel plates, annular ribs are added at different diameters to increase the compressive strength.

[0033] Specifically, since the variable diameter outer roller 2 needs to rotate with the central shaft 1, when the structure and mass of the variable diameter outer roller 2 are too large or too heavy, the load on the central shaft 1 will increase, resulting in the need for a larger power source to meet the driving needs. For this reason, this embodiment provides a preferred implementation scheme.

[0034] For example, the variable diameter outer roller 2 adopts a hollow structure, which can effectively reduce the mass of the variable diameter outer roller 2. At the same time, the hollow structure is conducive to better controlling the radius of each part of the variable diameter outer roller 2 during the production process, so that the inverted V-shaped motion trajectory formed by the movement of the variable diameter outer roller 2 can better fit the shape of the pepper tree, so as to better ensure the picking effect of the peppers.

[0035] Preferably, the reducing outer roller 2 and the central shaft 1 are fitted in an interference fit.

[0036] Specifically, since the variable diameter outer roller 2 needs to rotate around itself together with the central shaft 1, the variable diameter outer roller 2 needs to be tightly connected to the central shaft 1 to prevent the variable diameter outer roller 2 from falling off when the central shaft 1 rotates at high speed. For this purpose, this embodiment provides a preferred implementation scheme.

[0037] For example, the variable diameter outer roller 2 and the center shaft 1 are connected by interference fit, which can make the variable diameter outer roller 2 and the center shaft 1 tightly connected, preventing the variable diameter outer roller 2 from falling off when the center shaft 1 rotates at high speed. At the same time, this connection method facilitates the processing of the variable diameter outer roller 2 and reduces the manufacturing cost of the variable diameter outer roller 2.

[0038] Preferably, the variable diameter outer roller 2 is provided with spring tooth positioning holes 201 whose number is equal to the picking spring teeth 3 .

[0039] Specifically, in order to facilitate the subsequent installation and positioning of the picking spring teeth 3, providing the spring tooth positioning holes 201 on the variable diameter outer roller 2 can effectively improve the installation efficiency of the staff and facilitate identification by the staff.

[0040] Preferably, the picking spring teeth 3 are L-shaped, have the same length, and are evenly arranged along the variable diameter outer roller to form a variable diameter picking surface.

[0041] Specifically, since the peppers will be hung on the branches of the pepper tree through the pepper stalks after maturity, and an arc will be formed between the peppers and the pepper branches under the action of gravity, it is necessary to use picking spring teeth 3 with a specific shape to pick the peppers to ensure that the peppers are fully picked without damaging the main body of the pepper tree. For this purpose, this embodiment provides a preferred implementation scheme.

[0042] For example, the shape of the picking spring teeth 3 is designed to be L-shaped. When the variable diameter outer roller 2 rotates, the picking spring teeth 3 rotates together with the variable diameter outer roller 2. During the rotation, the bent part of the picking spring teeth 3 will be inserted under the arc area formed by the pepper stalk, and as the rotation continues, the picking spring teeth 3 will pull the pepper stalk until it breaks, thereby completing the picking of the peppers.

[0043] More specifically, the picking spring tooth 3 includes a vertical portion 301 and a bent portion 302 .

[0044] For example, the vertical portion 301 is used to connect with the variable diameter outer roller 2 to increase the straight-line distance of the picking spring teeth 3, and the bent portion 302 is used to contact the pepper stalk to pull the pepper stalk to break. The two parts are used to complete different functions in the picking process.

[0045] Preferably, the bending direction of the picking spring teeth 3 is consistent with the rotation direction of the central axis 1.

[0046] Specifically, since the pepper picking process is mainly completed by pulling the pepper stems with the picking spring teeth 3 until they break, the installation direction of the picking spring teeth 3 also has a certain influence on the picking effect. For this reason, this embodiment provides a preferred implementation scheme.

[0047] For example, the bending direction of the picking teeth 3 is consistent with the rotation direction of the central axis 1. During the picking process, when the variable diameter outer roller 2 rotates forward, the picking teeth 3 also rotate forward with the variable diameter outer roller 2. When the picking teeth 3 are inserted under the arc area formed by the pepper stalk, the picking teeth 3 continue to rotate forward. During the rotation process, the picking teeth 3 tear the pepper stalk to pieces, and during this process, the picking teeth 3 continue to move forward, and the peppers will move downward under the action of gravity. That is to say, when the picking teeth 3 tear the pepper stalk to pieces, the peppers will immediately separate from the picking teeth 3 under the action of gravity, thereby avoiding damage to the peppers caused by the subsequent rotation of the picking teeth 3 and improving the integrity of the peppers.

[0048] In addition, the picking spring teeth further adopt an arc-shaped rod with a spring at the bottom. Due to the built-in shock-absorbing function, the picking spring teeth reduce damage to the peppers during the collision with the peppers, and at the same time increase the service life of the picking spring teeth.

[0049] Preferably, the picking spring teeth 3 are connected to the variable diameter outer roller 2 by threaded connection.

[0050] Specifically, since the picking teeth 3 need to frequently contact with pepper trees, field weeds, etc. during the picking process, the picking teeth 3 are prone to wear, deformation, and breakage. The picking teeth 3 in such conditions will make it difficult to pick peppers. Therefore, it is necessary to adjust the connection method between the picking teeth 3 and the variable diameter outer roller 2 to facilitate the user to quickly replace the picking teeth 3. For this purpose, this embodiment provides a preferred implementation scheme.

[0051] For example, the connection mode between the picking spring teeth 3 and the variable diameter outer roller 2 is set to a threaded connection. After analysis, it is found that the external forces applied to the picking spring teeth 3 during the picking process are mostly tangential forces. Therefore, the forces applied to the connection between the picking spring teeth 3 and the variable diameter outer roller 2 are also mostly tangential forces. Therefore, it is necessary to increase the distance that the picking spring teeth 3 penetrate into the variable diameter outer roller 2 to prevent the shear force from pulling and deforming the picking spring teeth 3. At the same time, since there are certain requirements on the installation direction of the picking spring teeth 3 during use, the use of threaded connection can increase the distance that the picking spring teeth 3 penetrate into the variable diameter outer roller 2 and facilitate installation. The threaded connection also makes it easy for the operator to adjust the direction of the picking spring teeth 3 during installation to meet the use requirements of picking.

[0052] Preferably, the plane at the end of the picking spring tooth 3 is an arc surface.

[0053] Specifically, since the picking teeth 3 have a high probability of contacting the pepper body during the picking process, when the linear speed of the picking teeth 3 is high, even if the end face of the picking teeth 3 is flat, it may cause damage to the pepper, resulting in damage to the pepper and affecting the picking effect of the pepper. For this reason, this embodiment provides a preferred implementation scheme.

[0054] For example, the plane at the end of the picking spring tooth 3 is set to an arc surface. During the picking process, when the picking spring tooth 3 contacts the pepper, since the interior of the pepper is a hollow structure, when the arc surface at the end of the picking spring tooth 3 contacts the pepper, only a collision will occur without causing damage to the fleshy layer of the pepper, thereby reducing damage to the pepper and improving the final picking effect.

[0055] Preferably, the gap distance between the picking spring teeth 3 is 50mm-100mm.

[0056] Specifically, during the picking process, the spacing between the picking teeth 3 is directly related to the picking effect. When the spacing between the picking teeth 3 is too close, the peppers will be in contact with multiple picking teeth 3 at the same time, which may easily cause the peppers to be damaged; when the spacing between the picking teeth 3 is too far, the peppers on the pepper tree may be missed, affecting the final picking effect. For this reason, this embodiment provides a preferred implementation scheme.

[0057] For example, the gap distance between the three picking spring teeth is set between 50mm-100mm. According to the research on pepper trees, the distance between peppers is between 50mm-100mm. Therefore, setting the gap distance between the three picking spring teeth within 50mm-100mm can prevent damage to the peppers as much as possible while ensuring the picking effect.

[0058] It is worth noting that in this embodiment, only the interval between the picking spring teeth 3 is limited, but the specific interval between the picking spring teeth 3 is not limited. That is to say, the specific interval between the picking spring teeth 3 can be arbitrarily set by technical personnel in this field as long as it is within this interval.

[0059] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A pepper picking roller, characterized in that: It comprises a central shaft (1), at least one set of variable diameter outer rollers (2), and picking spring teeth (3); The central shaft (1) is used to drive the variable diameter outer roller (2) and the picking spring teeth (3) to rotate around itself; The variable diameter outer roller (2) is symmetrically distributed around the central axis (1) with a V-shaped cross section; and the radius of the variable diameter outer roller (2) changes linearly along the length direction; The picking spring teeth (3) are evenly distributed along the circumferential direction of the outer diameter-changing outer roller (2); When in operation, the central shaft (1) moves horizontally to the pepper tree, and the variable diameter outer roller (2) forms an inverted V-shaped motion trajectory that matches the shape of the pepper tree when rotating along with the central shaft (1).

2. The pepper picking roller according to claim 1, characterized in that: The radius of the variable diameter outer roller (2) varies in the range of 60 mm to 500 mm.

3. The pepper picking roller according to claim 2, characterized in that: The inside of the variable diameter outer roller (2) is a hollow structure.

4. The pepper picking roller according to claim 3, characterized in that: The reducing outer roller (2) and the center shaft (1) are fitted in an interference fit.

5. The pepper picking roller according to claim 1, characterized in that: The picking spring tooth (3) is in an L-shape.

6. The pepper picking roller according to claim 5, characterized in that: The bending direction of the picking spring teeth (3) is consistent with the rotation direction of the central axis (1).

7. The pepper picking roller according to claim 6, characterized in that: The picking spring teeth (3) are connected to the diameter-changing outer roller (2) by threaded connection.

8. The pepper picking roller according to claim 7, characterized in that: The plane at the end of the picking spring tooth (3) is an arc surface.

9. The pepper picking roller according to claim 8, characterized in that: The gap distance between the picking spring teeth (3) is 50mm-100mm.

10. A pepper harvester, comprising a harvester body and a pepper picking roller; The harvester body, including the engine, conveyor belt, wheels and picking roller mounting platform; The pepper picking roller is located on the picking roller mounting platform and is characterized in that: The pepper picking roller is the pepper picking roller according to any one of claims 1 to 9.

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