Vibrator bottom grid and line pepper harvester

Abstract

The invention discloses a vibrator bottom grating and a line pepper harvester, the vibrator bottom grating comprises a plurality of grating strips arranged according to a preset direction at preset intervals, and the working surface of the grating strips is provided with at least one convex part which arches towards the side where a vibration roller of a vibrator is located and avoids a vibration finger arranged on the vibration roller; 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 separating line pepper fruits from fruit seedlings.

Description

Technical Field

[0001] The invention relates to a vibrator bottom grid of a vibrator equipped with a chili pepper harvester, and also relates to a chili pepper harvester equipped with the vibrator bottom grid. Background Art

[0002] With the decrease in the rural labor force, machine harvesting / reaping has gradually become the mainstream. As for pepper harvesters, with the maturity of technology, in order to standardize the design and manufacture of pepper harvesters, the Chinese machinery industry has issued the recommended standard JB / T 12825-2016, the standard name is "Pepper Harvester" (On March 8, 2019, the Ministry of Agriculture and Rural Affairs issued the standard number DG / T 114-2019, the standard name is "Pepper Harvester").

[0003] According to the industry standard JB / T 12825-2016, the fruit shape index is the ratio of fruit length to fruit diameter (largest end diameter), and string peppers are defined as peppers with a fruit shape index greater than 8. Tomatoes, by contrast, are more spherical, with a fruit shape index around 1. In other words, existing tomato harvesters are suitable for harvesting round peppers, but not string peppers. This is because during the harvesting of nearly spherical fruits like tomatoes and round peppers, the fruit and vine are separated by a vibrating drum that vibrates at a given frequency during its rotation. The drum is equipped with vibrating fingers (also known as spring teeth). These fingers move the vines backward while shaking the relatively heavy spherical fruit off the vines, effectively separating the fruit from the vines.

[0004] Correspondingly, a bottom grid is installed below the vibrating drum. Under the support of the bottom grid and the movement of the vibrating fingers, the fruit vines are pushed onto the fruit vine conveyor belt, while the fruits fall through the bottom grid onto the fruit conveyor belt. The bottom grid is composed of several circular grid bars, in an arc-shaped comb-finger structure, with one end fixed and the other end suspended, which plays the role of supporting the fruit vines.

[0005] This structure, which is derived from a tomato harvester, can separate nearly spherical fruits such as tomatoes and round peppers. However, when harvesting linear pepper fruits such as chili peppers, the linear pepper fruits are difficult to separate from the fruit vines because the linear pepper fruits are similar in shape to the fruit vines and the linear peppers themselves are relatively light in weight. However, methods such as increasing the vibration frequency and amplitude of the vibrator may lead to a high mechanical breakage rate of the fruit. Therefore, improvements need to be made to the separation structure so that it can adapt to the separation of linear pepper fruits. Summary of the Invention

[0006] The purpose of the present invention is to provide a vibrator bottom grid suitable for separating pepper fruits from fruit vines. The present invention also provides a pepper harvester equipped with the vibrator bottom grid.

[0007] According to a first aspect of an embodiment of the present invention, there is provided a vibrator bottom grid, comprising: Grid bars, a plurality of which are arranged in a predetermined direction and at a predetermined interval, and a working surface of the grid bars is provided with at least one convex portion that arches toward the side where the vibrating roller of the vibrator is located and avoids the vibrating fingers provided on the vibrating roller; an inlet-side fixing portion, used for fixing one end of the grille bar; and The outlet side fixing portion is used to fix the other end of the grille bar.

[0008] Optionally, the grille bars are divided into groups; Accordingly, each group of grid bars is adapted with outlet-side fixing portions and inlet-side fixing portions that are independent of each other.

[0009] Optionally, each group of grille bars has two or three grille bars.

[0010] Optionally, at least one group having two grille bars is included.

[0011] Optionally, the inlet-side fixing portion and the outlet-side fixing portion are plate-type fixing portions; The corresponding grid bars are welded to the corresponding inlet-side fixing portion and outlet-side fixing portion.

[0012] Optionally, the fixing hole on the plate-type fixing portion is an elongated hole extending in the extension direction of the grille bars.

[0013] Optionally, the convex portion is an arc-shaped or V-shaped member formed by bending a rod, and both ends of the convex portion are fixed to corresponding grille bars.

[0014] Optionally, the V angle of the convex portion constituting the V-shaped member is 60° to 150°; The height of the convex portion is 22% to 27% of the radial length of the vibrating finger in the vibrator.

[0015] Optionally, the number of protrusions on each grille bar is no more than five or five pairs; When the convex portions are arranged in pairs, the two convex portions are symmetrical about a midplane passing through the axis of the grille bar; the midplane has the axis of the vibrator as a normal; and the angle between the convex portions arranged in pairs is less than or equal to 15°; If the convex portions are evenly arranged in the extension direction of the grille bars, the left and right middle surfaces of all the convex portions are coplanar with the middle surface or are arranged in sequence with one convex portion tilted toward one side of the middle surface and the other convex portion tilted toward the other side of the middle surface.

[0016] According to a second aspect of an embodiment of the present invention, a chili pepper harvester is provided, comprising the vibrator bottom grid described in the first aspect of the embodiment of the present invention.

[0017] The bottom grille according to an embodiment of the present invention has a protrusion on the grille bars that protrudes toward the side where the vibrating roller is located. This protrusion has been shown to make it easier to separate the chili pepper fruits from the vines. In comparison, known vibrator bottom grilles typically require a stronger vibrating roller or vibrating fingers to improve the separation efficiency of chili pepper fruits from the vines, which can result in a higher mechanical breakage rate for the chili peppers. However, the vibrator bottom grille according to an embodiment of the present invention can effectively reduce the mechanical breakage rate for chili peppers. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Schematic diagram of the assembly structure of the vibrator bottom grid on the vibrator in one embodiment.

[0019] Figure 2 This is a left side view of the assembly structure of the vibrator bottom grid on the vibrator in one embodiment.

[0020] Figure 3 Schematic diagram of the bottom grid structure of the vibrator in one embodiment.

[0021] Figure 4 Schematic diagram of a wide-bottom grille structure in one embodiment.

[0022] In the figure: 100. bottom grille, 200. rotating motor, 300. left fixed seat, 400. barrier grille, 500. vibration roller, 600. vibration mechanism, 700. right fixed seat, 800. material inlet, 900. material outlet.

[0023] 10. Wide bottom grille, 20. Arrangement interval, 30. Narrow bottom grille.

[0024] 1. Inlet side fixing hole, 2. Inlet side fixing plate, 3. Triangular barrier strip, 4. Grille bar, 5. Grille groove, 6. Outlet side fixing plate, 7. Outlet side fixing hole. DETAILED DESCRIPTION

[0025] The mechanical breakage rate, defined in the industry standard JB / T 12825-2016, is one of the key indicators for evaluating pepper harvester performance. For string peppers, using traditional pepper harvesters can easily result in a high mechanical breakage rate (greater than 5%) while ensuring efficient separation of the fruit from the vine. However, maintaining a satisfactory mechanical breakage rate can also make separation of the fruit from the vine more difficult.

[0026] Figure 1The figure shows a schematic diagram of the assembly structure of a vibrator bottom grille (hereinafter referred to as bottom grille 100) on a vibrator in one embodiment. In the figure, bottom grille 100 is fixed at both ends to the bottom of the vibrating roller 500 of the vibrator. In this application scenario, bottom grille 100 is a curved grille, and under ideal conditions, its axis is collinear with the axis of the vibrating roller 500.

[0027] Vibrating fingers (also known as spring teeth) are distributed on the vibration roller 500. Multiple groups of vibrating fingers are distributed on the cylinder of the vibration roller 500 in a roughly vortex manner. The vibrating finger groups are staggered between the grille bars 4 of the bottom grille 100 in the axial direction of the vibration roller 500. When the vibrating fingers rotate to a predetermined angle, they can intervene in the grille grooves 5 (also known as the gaps between the grille bars) of the bottom grille 100, but the amount of intervention is generally not large, about 1 to 1.5 times the thickness of the bottom grille.

[0028] The side of the bottom grid 100 facing the vibration roller 500 is its working surface. In the embodiment of the present invention, the working surface of the grid bars 4 of the bottom grid 100 is provided with the following Figure 4 The triangular barrier strip 3 illustrated in the figure, based on the description above, is offset between the vibrating fingers and the grille bars 4 in the axial direction of the vibration roller 500. Under this condition, there will be no motion interference between the vibrating fingers rotating with the vibration roller 500 and the bottom grille 100, and the axial vibrating fingers of the vibration roller 500 are roughly located in the middle of the grille groove 5. The width of the grille groove 5 is generally much larger than the axial dimension of the corresponding vibrating fingers in the vibration roller 500, thereby allowing, for example, the triangular barrier strip 3 to have a certain inclination angle relative to the plane with the axis of the vibration roller 500 as the normal.

[0029] The axial direction of the vibration roller 500 is the direction of the spokes, which is also called the left-right direction, the width direction or the transverse direction.

[0030] Accordingly, the feeding and discharging directions determine the front and rear directions, such as Figure 2 The side where the material inlet 800 is shown is generally called the front side, and the side where the material outlet 900 is shown is generally called the rear side. The front-to-back direction is also called the longitudinal direction, length direction, head-to-tail direction, etc.

[0031] Figure 3 The bottom grid 100 of the middle vibrator has a plurality of grid bars 4. The number of grid bars 4 has nothing to do with the improved part of the present invention and belongs to the existing configuration, so it will not be described in detail here. 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 inclination value when, for example, the triangular barrier strip 3 is set with a certain inclination angle.

[0032] Obviously, the grid bars 4 are arranged axially of the vibrator, and the distance between their working surface and the axis of the vibration roller 500 is roughly equivalent to the maximum radial extension of the vibration fingers of the vibration roller 500, and slightly smaller than the top circle diameter of the vibration roller 500. This has been mentioned above and will not be repeated here.

[0033] exist Figures 1 to 4 In the illustrated structure, the working surface of the grid bar 4 is provided with three, for example, triangular barrier bars 3 that arch toward the side where the vibrating roller 500 of the vibrator is located and avoid the vibrating fingers provided on the vibrating roller 500 .

[0034] Regarding the number of, for example, triangular barrier strips 3, Figure 3 and Figure 4 It can be clearly seen that each grid bar 4 is provided with three triangular barrier bars 3, and the number and shape of the three triangular barrier bars 3 may be correlated to each other. For example, when the height of the triangular barrier bars 3 is relatively low, the number of the triangular barrier bars 3 may 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, causing excessive impurities to pass through the bottom grid 100 and fall on, for example, a star wheel bed for transporting fruits located below the bottom grid 100. This will be specifically explained below and will not be repeated here.

[0035] In addition, if Figure 3 and Figure 4 As shown, both ends of the grille 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 as shown in the figure, so that the bottom grille 100 is reliably fixed and the relative position between the bottom grille 100 and the vibration roller 500 is relatively fixed.

[0036] Correspondingly, one end of the two ends of the grid bar 4 is fixed to the inlet-side fixing portion, and the other end is fixed to the outlet-side fixing portion. The grid bar 4 is preferably fixed to the corresponding fixing portion by welding.

[0037] Known pepper harvesters have a working width (also known as a 3.6-meter radius), though some have smaller radiuses for smaller plots, which can still reach 2.6 meters. Accordingly, the width of the bottom grille 100 corresponds to the radius, making it relatively large. Due to its relatively large dimensions, it is considered a large-scale component, making dimensional accuracy difficult to ensure and making assembly and disassembly very inconvenient. In particular, the fixing holes are prone to misalignment with the fixing holes on the machine body.

[0038] Furthermore, as use progresses, the bottom grille 100 is prone to local deformation or damage, and the problem of inaccurate alignment of the fixing holes after disassembly is particularly prominent. In view of this, in an embodiment of the present invention, the grille bars 4 are divided into several groups, that is, the assembly units are miniaturized, which makes it easier to ensure the dimensional accuracy of the smaller assembly units, thereby ensuring the assembly accuracy of the assembly units.

[0039] Since the number of fixing holes on a single assembly unit is relatively small, the assembly interference between these relatively few fixing holes is relatively small, thereby ensuring better assembly and disassembly flexibility.

[0040] At the same time, if a single assembly unit is damaged or deformed beyond tolerance, only the single assembly unit needs to be replaced or repaired.

[0041] Accordingly, if Figure 4 As shown, each group of grille bars 4 is adapted with independent outlet side fixing parts and inlet side fixing parts, such as the inlet side fixing plate 2 and the outlet side fixing plate 6 shown in the figure, to form a grille bar assembly, which constitutes the aforementioned assembly unit.

[0042] In addition, as mentioned above, the pepper harvester has a variety of spokes, and different bottom grilles 100 need to be provided to meet the needs of different spokes. By unitizing the bottom grilles 100, a certain number of grille bar assemblies can be adapted to the bottom grilles 100 of different spokes, thereby having better adaptability.

[0043] The grille bar assemblies that comprise a bottom grille 100 can have a variety of specifications. The specifications here refer to the number of grille bars 4. It has been demonstrated that two sizes of grille bar assemblies are sufficient for most bottom grille 100 assemblies: one with two grille bars 4 and one with three grille bars 4.

[0044] Furthermore, in a more specific implementation, at least one group of two grille bars 4 is included, which is mainly used to adjust the width of the bottom grille 100 .

[0045] It should be noted that groups with two grille bars 4 generally have better adaptability. In theory, the fewer grille bars 4 in a grille bar assembly, the better the adaptability. Obviously, when each grille bar assembly has only one grille bar 4, it can adapt to all widths, but this method is obviously relatively difficult to assemble. Using a group with three grille bars 4 as the base group and a group with fewer grille bars 4 as the adjustment group, the overall assembly difficulty is not high while providing greater assembly flexibility.

[0046] exist Figure 4In the illustrated structure, the inlet side fixing portion and the outlet side fixing portion both adopt plate-type fixing portions, such as the inlet side fixing plate 2 and the outlet side fixing plate 6 shown in the figure, which have a simple structure and can ensure strength.

[0047] The grid bars 4 and the inlet side fixing plate 2 are both made of metal materials, generally Q355 steel plates, which have good welding properties. The grid bars 4 can be fixed to the corresponding inlet side fixing parts and outlet side fixing parts by welding.

[0048] exist Figure 4 In the illustrated structure, three inlet-side fixing holes 1 are opened on the inlet-side fixing plate 2, and three outlet-side fixing holes 7 are opened on the outlet-side fixing plate 6. Both the inlet-side fixing holes 1 and the outlet-side fixing holes 7 are elongated holes extending in the extension direction of the grille bar 4, so as to facilitate adjustment of the assembly position of the grille bar assembly in the extension direction of the grille bar 4.

[0049] Regarding the shape of the convex portion, Figure 4 The illustrated structure shows a triangular barrier bar 3, which is a bent steel bar. The bent bar forming the triangular barrier bar 3 is V-shaped, or it can be an arc-shaped member, with the V-shaped member being preferred. Both the V-shaped and arc-shaped members have defined ends, allowing the protrusions to be welded to the corresponding grille bars 4.

[0050] Furthermore, the V angle of the convex portion constituting the V-shaped member is 60° to 150°; and the height of the convex portion is 22% to 27% of the radial length of the vibrating finger in the vibrator.

[0051] In general, 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 breakage rate is relatively low. Conversely, the efficiency of separating the fruit from the vine is relatively high, but the mechanical breakage rate is relatively high.

[0052] It should also be noted that, depending on the direction of the material, the side of the material can be relatively inclined ribs, while the back side can be other angles. Figure 4 The middle triangular barrier strip 3 is roughly arranged in the form of an isosceles triangle, and in some embodiments, the side of the material can be an inclined rib, and the right side in the figure is the back side. Whether it is inclined or not has little effect on the fruit falling off the fruit vine.

[0053] When a plurality of, for example, triangular barrier strips 3 are provided on each grille bar 4 , the V angle of the triangular barrier strip 3 is used as a parameter, and the plurality of triangular barrier strips 3 are arranged in the extending direction of the grille bar 4 .

[0054] If arc-shaped convex portions are used, the convex portions arranged sequentially from the inlet side to the outlet side are arranged in a manner in which the heights gradually increase.

[0055] Furthermore, the number of protrusions on each grille bar 4 is no more than five or five pairs; accordingly, when the protrusions are arranged in pairs, the two protrusions are symmetrical about the middle plane passing through the axis of the grille bar; the middle plane takes the axis of the vibrator as the normal; the angle between the protrusions arranged in pairs is less than or equal to 15° to avoid the vibrating fingers.

[0056] If the protrusions are evenly arranged in the extension direction of the grille bars 4, the left and right middle surfaces of all the protrusions are coplanar with the middle surface or are arranged in sequence with one of them tilted toward one side of the middle surface and the other tilted toward the other side of the middle surface.

[0057] It has been verified that when the convex parts on the grating bar 4 are arranged tilted to one side, the efficiency of separating the fruit from the fruit vines is relatively high. Under the condition of being able to effectively avoid the vibrating fingers, the convex parts can be arranged in sequence with one of them tilted toward one side of the middle surface and the other tilted toward the other side of the middle surface. This can ensure that the efficiency of separating the fruit from the fruit vines is relatively high under the condition of the same number of convex parts.

[0058] Correspondingly, the corresponding mid-surfaces are the left and right mid-surfaces of the grid bar 4 . Obviously, the left and right mid-surfaces are the mid-surfaces with the axis of the vibration roller 500 as the normal line.

Claims

1. A vibrator bottom grid, characterized in that, include: Grid bars, a plurality of which are arranged in a predetermined direction and at a predetermined interval, and a working surface of the grid bars is provided with at least one convex portion that arches toward the side where the vibrating roller of the vibrator is located and avoids the vibrating fingers provided on the vibrating roller; an inlet-side fixing portion, used for fixing one end of the grille bar; and The outlet side fixing portion is used to fix the other end of the grille bar.

2. The vibrator bottom grid according to claim 1, characterized in that: The grille bars are divided into groups; Accordingly, each group of grid bars is adapted with outlet-side fixing portions and inlet-side fixing portions that are independent of each other.

3. The vibrator bottom grid according to claim 2, characterized in that: Each set of grille bars has two or three grille bars.

4. The vibrator bottom grid according to claim 3, characterized in that: At least one group of two grille bars is included.

5. The vibrator bottom grid according to any one of claims 2 to 4, characterized in that: The inlet side fixing portion and the outlet side fixing portion are plate-type fixing portions; The corresponding grid bars are welded to the corresponding inlet-side fixing portion and outlet-side fixing portion.

6. The vibrator bottom grid according to claim 5, characterized in that: The fixing holes on the plate-type fixing portion are elongated holes extending in the extending direction of the grid bars.

7. The vibrator bottom grid according to claim 1, characterized in that: The convex portion is an arc-shaped or V-shaped member formed by bending a rod, and both ends of the convex portion are fixed on corresponding grid bars.

8. The vibrator bottom grid according to claim 7, characterized in that: The V angle of the convex portion constituting the V-shaped member is 60° to 150°; The height of the convex portion is 22% to 27% of the radial length of the vibrating finger in the vibrator.

9. The vibrator bottom grid according to claim 7 or 8, characterized in that: The number of protrusions on each grille bar shall not exceed five or five pairs; When the convex portions are arranged in pairs, the two convex portions are symmetrical about a midplane passing through the axis of the grille bar; the midplane has the axis of the vibrator as a normal; and the angle between the convex portions arranged in pairs is less than or equal to 15°; If the convex portions are evenly arranged in the extension direction of the grille bars, the left and right middle surfaces of all the convex portions are coplanar with the middle surface or are arranged in sequence with one convex portion tilted toward one side of the middle surface and the other convex portion tilted toward the other side of the middle surface.

10. A chili pepper harvester, characterized in that: The vibrator bottom grid comprises the vibrator bottom grid according to any one of claims 1 to 9.

Images