Vibrator bottom grid and line pepper harvester

Abstract

The utility model discloses a vibrator bottom grid and a line pepper harvester, and the vibrator bottom grid comprises a plurality of grid strips which are arranged at preset intervals according to a preset direction, at least one convex part which arches towards the side where a vibration roller of the vibrator is located and avoids a vibration finger arranged on the vibration roller is arranged on the working surface of the grating strip; the inlet side fixing part is used for fixing one end of each grille bar; and the outlet side fixing part is used for fixing the other end of the grid bar. The bottom grid of the vibrator is suitable for separation of line pepper fruits and fruit seedlings.

Description

Technical Field

[0001] This utility model relates to a vibrator bottom grid for a vibrator in a chili harvester, and also to a chili harvester equipped with the vibrator bottom grid. Background Technology

[0002] According to the industry standard JB / T 12825-2016, the fruit shape index refers to the ratio of fruit length to fruit diameter (diameter at the larger end), and a linear chili pepper is defined as a chili pepper with a fruit shape index greater than 8. In contrast, tomatoes are more spherical in shape, with a fruit shape index of around 1. In other words, existing tomato harvesters are suitable for harvesting round chili peppers but not for linear chili peppers. This is because, during the harvesting of nearly spherical fruits like tomatoes and round chili peppers, the separation of the fruit from the vine is achieved by the vibration of a vibrating drum at a given frequency during its rotation. The vibrating drum is covered with vibrating fingers (also known as spring teeth). These vibrating fingers propel the vine backward while simultaneously shaking the relatively heavier spherical fruit off the vine, thus separating the fruit from the vine.

[0003] Correspondingly, a bottom grid is provided below the vibrating roller. Under the support of the bottom grid and the movement of the vibrating fingers, the vines are pushed onto the vine conveyor belt, while the fruits fall through the bottom grid onto the fruit conveyor belt. The bottom grid consists of several circular grid strips with an arc-shaped comb-like structure, fixed at one end and suspended at the other, thus serving to support the vines.

[0004] This structure, derived from tomato harvesters, can separate nearly spherical fruits such as tomatoes and round peppers. However, when harvesting linear peppers such as chili peppers, the linear peppers are difficult to separate from the vines because the fruits are similar in shape to the vines and the peppers themselves are relatively light. Increasing the vibration frequency and amplitude of the vibrator may lead to a higher rate of mechanical damage to the fruits. Therefore, the separation structure needs to be improved to adapt to the separation of linear peppers. Utility Model Content

[0005] The purpose of this utility model is to provide a vibrating bottom grid suitable for separating chili pepper fruits from vines. This utility model also provides a chili pepper harvester equipped with the vibrating bottom grid.

[0006] According to a first aspect of the present invention, a vibrator bottom grid is provided, comprising:

[0007] A grid bar, a plurality of such grid bars are arranged in a predetermined direction at a predetermined interval, and the working surface of the grid bar is provided with at least one protrusion that arches toward the vibrating drum of the vibrator and avoids the vibrating finger provided on the vibrating drum;

[0008] An inlet-side fixing part is used to fix one end of the grille bar; and

[0009] The outlet-side fixing part is used to fix the other end of the grid bar.

[0010] Optionally, the grid bars are divided into several groups;

[0011] Accordingly, each set of grid bars is equipped with independent outlet-side fixing parts and inlet-side fixing parts.

[0012] Optionally, each set of grid bars may have two or three grid bars.

[0013] Optionally, at least one group with two grid strips may be included.

[0014] Optionally, the inlet-side fixing part and the outlet-side fixing part are plate-type fixing parts;

[0015] The corresponding grating strips are welded onto the corresponding inlet-side fixing parts and outlet-side fixing parts.

[0016] Optionally, the fixing holes on the plate fixing part are elongated holes extending in the extension direction of the grid strip.

[0017] Optionally, the protrusion is an arc-shaped or V-shaped part formed by bending a rod, and the two ends of the protrusion are fixed to the corresponding grid strips.

[0018] Optionally, the V-angle of the protrusion constituting the V-shaped part is 60°~150°;

[0019] The height of the protrusion is 22% to 27% of the radial length of the vibrator.

[0020] Optionally, the number of protrusions on each grille bar shall not exceed five or five pairs;

[0021] When the protrusions are arranged in pairs, the two protrusions are symmetrical about the mid-plane of the grid bar axis; the mid-plane is normal to the vibrator axis; the included angle between the paired protrusions is less than or equal to 15°.

[0022] If the protrusions are evenly arranged in the extension direction of the grid strip, all the protrusions are arranged in a sequentially spaced manner with their left and right middle surfaces coplanar with the middle surface, or with one of them skewed to one side of the middle surface and the other skewed to the other side of the middle surface.

[0023] According to a second aspect of the present invention, a chili pepper harvester is provided, including the vibrator bottom grid described in the first aspect of the present invention.

[0024] The bottom grid according to this utility model embodiment has protrusions on the grid bars that extend towards the vibrating roller. Verification has shown that with these protrusions, it is easier to separate the chili pepper fruit from the vine. In comparison, known vibrating bottom grids, in order to improve the separation efficiency of chili pepper fruit from the vine, usually require the vibrating roller of the vibrator to have a stronger vibration capability or the vibrating fingers to have a stronger agitating capability, which may lead to a higher mechanical breakage rate of the chili pepper. The vibrating bottom grid based on this utility model embodiment can effectively reduce the mechanical breakage rate of chili peppers. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the assembly structure of the bottom grid of the vibrator on the vibrator in one embodiment.

[0026] Figure 2 This is a left view of the assembly structure of the vibrator bottom grid on the vibrator in one embodiment.

[0027] Figure 3 This is a schematic diagram of the vibrator bottom grid structure in one embodiment.

[0028] Figure 4 This is a schematic diagram of a wide-bottomed grille structure in one embodiment.

[0029] In the diagram: 100. Bottom grid, 200. Rotary motor, 300. Left fixed seat, 400. Barrier grid, 500. Vibrating roller, 600. Vibration mechanism, 700. Right fixed seat, 800. Material inlet, 900. Material outlet.

[0030] 10. Wide bottom grille, 20. Arrangement spacing, 30. Narrow bottom grille.

[0031] 1. Inlet side fixing hole, 2. Inlet side fixing plate, 3. Triangular barrier strip, 4. Grating strip, 5. Grating groove, 6. Outlet side fixing plate, 7. Outlet side fixing hole. Detailed Implementation

[0032] The mechanical breakage rate, defined in industry standard JB / T 12825-2016, is one of the main indicators for evaluating the performance of chili harvesters. For long, thin chilies, using traditional chili harvesters, while meeting the requirement of efficient fruit-vine separation, easily leads to a persistently high mechanical breakage rate (greater than 5%). Conversely, ensuring the mechanical breakage rate of long, thin chilies remains within acceptable limits makes fruit-vine separation quite difficult.

[0033] Figure 1The diagram shows a schematic of the assembly structure of the vibrator bottom grid (hereinafter referred to as bottom grid 100) on the vibrator in one embodiment. In the diagram, the bottom grid 100 is fixed to the bottom of the vibrating drum 500 of the vibrator by fixing at both ends. In this application scenario, the bottom grid 100 is a curved grid, and its axis is collinear with the axis of the vibrating drum 500 under ideal conditions.

[0034] Vibrating fingers (also known as spring teeth) are distributed on the vibrating drum 500. Multiple sets of vibrating fingers are distributed on the drum body of the vibrating drum 500 in a roughly vortex manner. The vibrating finger sets are offset from the grid bars 4 of the bottom grid 100 in the axial direction of the vibrating drum 500. When the vibrating fingers rotate to the predetermined corner position, they can intervene in the grid groove 5 (also known as the gap between grid bars) of the bottom grid 100, but the intervention amount is generally small, about 1 to 1.5 times the thickness of the bottom grid.

[0035] The side of the bottom grid 100 facing the vibrating roller 500 is its working surface. In this embodiment of the invention, the working surface of the grid bars 4 of the bottom grid 100 is provided with... Figure 4 The triangular barrier strip 3 illustrated above, based on the previous description, is offset from the grid strip 4 in the axial direction of the vibrating drum 500. Under this condition, the vibrating finger rotating with the vibrating drum 500 will not cause motion interference with the bottom grid 100. Furthermore, the vibrating finger in the axial direction of the vibrating drum 500 is approximately located in the middle of the grid groove 5. The width of the grid groove 5 is generally much larger than the size of the corresponding vibrating finger in the axial direction of the vibrating drum 500. Therefore, it is permissible for, for example, the triangular barrier strip 3 to have a certain tilt angle relative to the plane with the axis of the vibrating drum 500 as the normal.

[0036] Among them, the axial direction of the vibrating drum 500 is the direction of the machine spokes, which is also called the left-right direction, the width direction, or the transverse direction.

[0037] Accordingly, the feeding and discharging directions determine the front and rear directions, such as... Figure 2 The side where the material inlet 800 is located is generally called the front side, and the side where the material outlet 900 is located is generally called the rear side. The front and rear directions are also called longitudinal, length direction, head and tail direction, etc.

[0038] Figure 3 The bottom grid 100 of the vibrator has a plurality of grid bars 4. The number of grid bars 4 is unrelated to the improvements made in this invention and is a conventional configuration, which will not be described further here. Accordingly, given the number and specifications of the grid bars 4 and the radius of the vibrator, Figure 4 The size of the grid groove 5 is also determined, and the size of the grid groove 5 also determines the maximum allowable tilt angle value when, for example, the triangular barrier strip 3 is set with a certain tilt angle.

[0039] Obviously, the grid bars 4 are arranged axially in the vibrator. The distance between their working surface and the axis of the vibrating drum 500 is roughly equivalent to the maximum radial extension of the vibrating finger of the vibrating drum 500, and slightly smaller than the top circle diameter of the vibrating drum 500. This has been mentioned above and will not be repeated here.

[0040] exist Figures 1-4 In the illustrated structure, the working surface of the grid bar 4 is provided with three triangular barrier bars 3, for example, that arch towards the vibrating roller 500 of the vibrator and avoid the vibrating fingers set on the vibrating roller 500.

[0041] Regarding, for example, the number of triangular barrier strips 3, Figure 3 and Figure 4 As can be clearly seen, each grid bar 4 is provided with three triangular barrier bars 3. The number of these bars and their shape can be related to each other. For example, when the height of the triangular barrier bars 3 is relatively low, the number of triangular barrier bars 3 can be relatively large. However, the height of the triangular barrier bars 3 should not be too large, otherwise it will cause excessive obstruction to the fruit vines, resulting in too many impurities passing through the bottom grid 100 and falling onto the star wheel bed, which is used to transport the fruit, located below the bottom grid 100. This will be explained in detail below and will not be repeated here.

[0042] In addition, such as Figure 3 and Figure 4 As shown, both ends of the grid bar 4 have fixing parts, such as the inlet side fixing plate 2 used as the inlet side fixing part and the outlet side fixing plate 6 used as the outlet side fixing part, so as to reliably fix the bottom grid 100 and fix the relative position between the bottom grid 100 and the vibrating roller 500.

[0043] Accordingly, one end of the grid bar 4 is fixed to the inlet-side fixing part, and the other end is fixed to the outlet-side fixing part. Preferably, the grid bar 4 is fixed to the corresponding fixing part by welding.

[0044] Since the known working width (also known as the working width) of chili harvesters can reach 3.6 meters, and although there are chili harvesters with smaller working widths for small plots, their working width can still reach 2.6 meters, the width of the bottom grid 100 corresponds to the working width, resulting in a relatively large size. Due to its relatively large size, it is considered a large-sized component, making it difficult to guarantee dimensional accuracy and causing significant inconvenience in assembly and disassembly. In particular, the mounting holes are prone to misalignment with the mounting holes on the machine body.

[0045] Furthermore, with prolonged use, the bottom grille 100 is prone to localized deformation or damage, with inaccurate alignment of the fixing holes after disassembly and reassembly being particularly prominent. In view of this, in this embodiment of the invention, the grille strips 4 are divided into several groups, i.e., the assembly unit is miniaturized. This makes it easier to ensure the dimensional accuracy of the smaller assembly units, thereby guaranteeing the assembly accuracy of the assembly units.

[0046] Because the number of mounting holes on a single assembly unit is relatively small, the assembly interference between these relatively few mounting holes is relatively small, thus ensuring greater flexibility in assembly and disassembly.

[0047] At the same time, if a single assembly unit is damaged or its deformation exceeds the tolerance, only that single assembly unit needs to be replaced or repaired.

[0048] Accordingly, such as Figure 4 As shown, each set of grid bars 4 is equipped with an independent outlet-side fixing part and an inlet-side fixing part, such as the inlet-side fixing plate 2 and the outlet-side fixing plate 6 shown in the figure, thereby forming a grid bar assembly, which constitutes the aforementioned assembly unit.

[0049] In addition, as mentioned earlier, chili harvesters have various spokes, and different bottom grids 100 are needed to adapt to different spokes. By modularizing the bottom grid 100, a certain number of grid bar components can be adapted to the bottom grid 100 of different spokes, thus achieving better adaptability.

[0050] The grid strip assembly that makes up a bottom grid 100 can have various specifications, and the specifications here refer to the number of grid strips 4. After verification, it has been found that using two specifications of grid strip assembly can basically meet the assembly needs of most bottom grids 100s: one specification is a grid strip assembly with two grid strips 4, and the other specification is a grid strip assembly with three grid strips 4.

[0051] Furthermore, in a more specific implementation, at least one group with two grid strips 4 is included, primarily for adjusting the width of the bottom grid 100.

[0052] It should be noted that groups with two grid strips 4 generally have better adaptability. Theoretically, the fewer grid strips 4 in a grid strip assembly, the better the adaptability. Obviously, when each grid strip assembly has only one grid strip 4, it can adapt to the entire width, but this method is obviously more difficult to assemble. Using groups with three grid strips 4 as the base group and groups with fewer grid strips 4 as the adjustment group, the overall assembly difficulty is not high while having better assembly flexibility.

[0053] exist Figure 4In the illustrated structure, both the inlet-side fixing part and the outlet-side fixing part adopt plate-type fixing parts, such as the inlet-side fixing plate 2 and the outlet-side fixing plate 6 shown in the figure. The structure is simple and the strength can be guaranteed.

[0054] Both the grating strip 4 and the inlet side fixing plate 2 are made of metal materials, generally Q355 steel plate, which has good welding performance. The grating strip 4 can be fixed to the corresponding inlet side fixing part and outlet side fixing part by welding.

[0055] exist Figure 4 In the illustrated structure, the inlet-side fixing plate 2 has three inlet-side fixing holes 1, and the outlet-side fixing plate 6 has three outlet-side fixing holes 7. Both the inlet-side fixing holes 1 and the outlet-side fixing holes 7 are elongated holes extending in the extension direction of the grid bar 4, so as to facilitate the adjustment of the assembly position of the grid bar assembly in the extension direction of the grid bar 4.

[0056] Regarding the shape of the convex part, Figure 4 In the illustrated structure, the triangular barrier strip 3 is a bent steel bar. The bent part forming the triangular barrier strip 3 in the figure is a V-shaped part, but it can also be an arc-shaped part, with the V-shaped part being preferred. Whether it is a V-shaped part or an arc-shaped part, it has two definite ends, so that the protrusions can be fixed to the corresponding grid strip 4 by welding.

[0057] Furthermore, the V-angle of the protrusion constituting the V-shaped part is 60°~150°; the height of the protrusion is 22%~27% of the radial length of the vibrator.

[0058] Generally speaking, when the V-angle of the convex part is relatively large, the efficiency of separating the fruit from the vine is relatively low, but the mechanical damage rate is relatively low. Conversely, when the V-angle of the convex part is relatively small, the efficiency of separating the fruit from the vine is relatively high, but the mechanical damage rate is relatively high.

[0059] It should also be noted that, depending on the material's direction, the ribs on the side facing the material can be relatively inclined, while the ribs on the opposite side can be at other angles. Figure 4 The triangular barrier strip 3 is generally arranged in an isosceles triangle manner. In some embodiments, the side of the material can be an inclined rib, while the right side of the figure is the back side. Whether it is inclined or not has little impact on the fruit falling off the vine.

[0060] When each grid bar 4 is provided with multiple, for example, triangular barrier bars 3, the V-angle of the triangular barrier bars 3 is used as a parameter, and the multiple triangular barrier bars 3 are in the extending direction of the grid bar 4.

[0061] If an arc-shaped protrusion is used, the protrusions arranged sequentially from the inlet side to the outlet side are arranged in a manner that gradually increases in height.

[0062] Furthermore, the number of protrusions on each grid bar 4 is no more than five or five pairs; correspondingly, when the protrusions are arranged in pairs, the two protrusions are symmetrical about the mid-plane of the grid bar axis; the mid-plane is normal to the vibrator axis; the included angle between the paired protrusions is less than or equal to 15° to avoid the vibration finger.

[0063] If the protrusions are evenly arranged in the extension direction of the grid strip 4, all the protrusions are arranged in a sequentially spaced manner with their left and right middle surfaces coplanar with the middle surface, or with one of them skewed to one side of the middle surface and the other skewed to the other side of the middle surface.

[0064] After verification, when the protrusions on the grid strip 4 are arranged to one side, the efficiency of separating the fruit from the vine is relatively high. Under the condition of effectively avoiding vibration, the protrusions can be arranged in a way that one side is tilted to one side of the middle surface and the other side is tilted to the other side of the middle surface. This can ensure that the efficiency of separating the fruit from the vine is relatively high when the number of protrusions is the same.

[0065] Correspondingly, the corresponding middle surfaces are the left and right middle surfaces of the grid strip 4, which are obviously the middle surfaces with the axis of the vibrating roller 500 as the normal.

Claims

1. A vibrator base grid, characterized in that, include: A grid bar, a plurality of such grid bars are arranged in a predetermined direction at a predetermined interval, and the working surface of the grid bar is provided with at least one protrusion that arches toward the vibrating drum of the vibrator and avoids the vibrating finger provided on the vibrating drum; An inlet-side fixing part is used to fix one end of the grille bar; and The outlet-side fixing part is used to fix the other end of the grid bar.

2. The vibrator bed grid of claim 1, wherein, The grid strips are divided into several groups; Accordingly, each set of grid bars is equipped with independent outlet-side fixing parts and inlet-side fixing parts.

3. The vibrator bed grid of claim 2, wherein, Each set of grilles has two or three grilles.

4. The vibrator bed grid of claim 3, wherein, It includes at least one group with two grid strips.

5. A grid for a vibrator base according to any one of claims 2 to 4, wherein The inlet-side fixing part and the outlet-side fixing part are plate-type fixing parts; The corresponding grating strips are welded onto the corresponding inlet-side fixing parts and outlet-side fixing parts.

6. The vibrator bed grid of claim 5, wherein, The fixing holes on the plate-type fixing part are elongated holes extending in the extension direction of the grid strip.

7. The vibrator bed grid of claim 1, wherein, The protrusion is an arc-shaped or V-shaped part formed by bending a rod, and the two ends of the protrusion are fixed to the corresponding grid strips.

8. The vibrator bed grid of claim 7, wherein, The V-angle of the protrusion that constitutes the V-shaped part is 60°~150°; The height of the protrusion is 22% to 27% of the radial length of the vibrator.

9. The vibrator bed grid according to claim 7 or 8, characterized in that The number of protrusions on each grille bar is no more than five or five pairs; When the protrusions are arranged in pairs, the two protrusions are symmetrical about the mid-plane of the grid bar axis; the mid-plane is normal to the vibrator axis; the included angle between the paired protrusions is less than or equal to 15°. If the protrusions are evenly arranged in the extension direction of the grid strip, all the protrusions are arranged in a sequentially spaced manner with their left and right middle surfaces coplanar with the middle surface, or with one of them skewed to one side of the middle surface and the other skewed to the other side of the middle surface.

10. A string pepper harvester characterized by, Includes the vibrator bottom grid as described in any one of claims 1 to 9.

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