JP7296072B1 - chestnut harvester - Google Patents

Abstract

A harvesting machine capable of simultaneously harvesting burrs of chestnuts and chestnuts is provided. A multiple brush wheel section (20) having a plurality of brush wheels provided with rod-shaped members (41A to 41F) arranged radially around a shaft member (2), and a handle section (20) connected to shafts at both ends of the shaft member (2). 5, and a housing portion 1 having an opening in the direction of rotation of the multiple brush wheel portion 20, wherein the multiple brush wheel portion 20 and the rod-shaped members 41A to 41F are hard members. and a soft brush wheel 4 in which the rod-shaped members 41A to 41F are elastic soft members, which are arranged between the plurality of hard brush wheels in the multiple brush wheel portion 20. 10. [Selection drawing] Fig. 1

Description

The present invention relates to a chestnut harvester.

Chestnut is a food that can be cultivated in almost all prefectures in Japan. Chestnuts are cultivated in hilly and mountainous areas that occupy most of the land area in Japan, and are an important crop that supports local economies. However, chestnut cultivation is not mechanized. In addition, the number of workers engaged in chestnut production is aging and is on the decline. In order to maintain the production area of chestnuts, it is an urgent need to save labor and lighten the labor involved in chestnut production. In the production of chestnuts, the burden of harvesting chestnuts is particularly large. Harvesting chestnuts is a peculiar task of going around the orchard all day and bending down to pick up the fruits from the chestnut balls that have fallen to the ground.

Patent Document 1 discloses a chestnut harvesting device arranged along a tree line under a chestnut tree and used to collect chestnut burs that have fallen from the chestnut tree, and has a mesh through which the chestnuts do not pass. The burr net is formed with a dimensioned burr net, the burr net having a pair of end poles transversely across the burr net at opposite ends and the end poles. A predetermined number of intermediate poles crossing the burr-collecting net in the width direction are disclosed.

In Patent Document 2, a fixed clip is attached to the lower end of the post provided with a grip and a lever at the upper end of the post that is long enough to reach the ground when a person is standing, and the fixed clip faces the fixed clip. A nut picking tool is disclosed in which a movable clip is assembled, a spring is interposed in the movable clip, and the lever and the movable clip are connected by an operating rod.

In addition, although it does not relate to chestnuts, Patent Document 3 discloses a main body frame equipped with wheels that enable it to run on the ground, and elastic clamping discs disposed opposite each other on the left and right sides of a collection shaft supported by the main body frame. A ball collecting mechanism in which a plurality of clamping parts are arranged, each of which is arranged with a surplus ball removing disc having a diameter smaller than the diameter of the clamping disk, and a ball collection mechanism in which a lower edge is close to the ground surface, and an interval width corresponding to the clamping parts is provided. , a ball aligning mechanism consisting of a plurality of ball aligning plates arranged and supported by the support stay portion from the body frame, and a golf ball brought to an upper position by the rotation of the nipping portion is removed from the nipping portion by the discharge guide plate and accumulated. , discloses a golf ball collecting device comprising a collecting box provided on a body frame forwardly of the ball collecting mechanism.

Non-Patent Document 1 discloses a chestnut harvester. This harvester is a hand-push type with a brush that picks up chestnuts and puts them in a basket.

JP-A-9-313023 Registered Utility Model No. 3120258 JP 2012-34884 A

Bag-A-Nut (trademark) Harveters, [online], [searched on January 16, 2020], Internet <URL: https://baganut.com/product-cat/harvesters/chestnuts/>

The method of Patent Literature 1 requires a net to be arranged in advance, and a large amount of net is required when the production area is large. Also, depending on the arrangement of trees and the location of the farm, it is not possible to arrange the net properly. For this reason, the situations in which the conditions for use are met are limited. Moreover, Patent Document 2 can be used according to the situation of the farm, but it is necessary to pick up the chestnuts one by one. Patent Document 3 is not for chestnuts in the first place, it is not in the technical field where diversion can be easily conceived, and it is not designed for chestnuts.

The harvester of Non-Patent Document 1 can be operated by hand, and the user can harvest chestnuts by walking while pushing and pulling this device on the farm.

Here, chestnuts are to be harvested as "chestnuts in burrs" and as their fruits, "chestnuts". In chestnut farms, both are present during the harvesting season, and both must be collected. However, when harvesting chestnuts in burrs, the harvester of Non-Patent Literature 1 needs to be used in a state in which spacers are arranged to provide intervals between brushes for chestnut burrs. On the other hand, when harvesting chestnuts, it is necessary to use the brushes in a densely arranged state as a practical use of chestnuts. In the condition for burrs, chestnuts cannot be harvested because the distance between the brushes is too wide. On the other hand, in the practical state of the chestnut, the chestnut burs cannot be entwined, and either the chestnut burs pass by in a state of riding on the chestnut burrs, or the chestnut burrs are caught and the rotation of the shaft member is stopped. For this reason, additional countermeasures such as dividing the work into multiple times and performing separately have become necessary.

Under such circumstances, it is an object of the present invention to provide a harvesting machine capable of harvesting both chestnut balls and chestnuts at the same time.

As a result of earnest research to solve the above problems, the inventors of the present invention have found that the following inventions meet the above objects, and have completed the present invention. That is, the present invention relates to the following inventions.

<1> A multiple brush wheel portion in which a plurality of brush wheels each having a rod-shaped member arranged radially around a shaft member are stacked; handle portions connected to shafts at both ends of the multiple brush wheel portion; A chestnut harvester comprising:
A chestnut harvester in which the multiple brush wheel section includes hard brush wheels in which the rod-like members are hard members, and soft brush wheels in which the rod-like members are soft members and which are arranged between the hard brush wheels.
<2> The above <1>, wherein the rod-shaped member has a hook portion on the tip side of the outer circumference, and the pitch interval of the rod-shaped member of the hard brush wheel and/or the soft brush wheel is 15 mm to 40 mm. Harvester as described.
<3> The harvester according to <1> or <2> above, having claws arranged between the rod-shaped members of the hard brush wheel and the soft brush wheel and connected to the cage.

The harvester of the present invention can harvest chestnuts in burrs and chestnuts at the same time.

BRIEF DESCRIPTION OF THE DRAWINGS It is the cross-sectional schematic diagram which looked at the side concerning 1st embodiment of the harvester of this invention. 1 is a schematic front view of a multiple brush wheel unit according to a first embodiment of the present invention during harvesting; FIG. 1 is a schematic diagram of a brush wheel; FIG. FIG. 4 is a schematic diagram showing a state in which the amount of deflection of a brush wheel is measured; 4 is an image of a manufacturing example of a rod-shaped member used for a soft brush wheel. It is a partial image of a soft brush wheel in which a plurality of manufacturing examples of soft rod-shaped members are attached to a shaft member. 1 is a perspective view of a conventional harvester used as a reference for the present invention; FIG. FIG. 10 is a rear view of a multiple brush wheel portion of a conventional harvester used for harvesting chestnuts in a burr; FIG. 10 is a rear view of a multiple brush wheel portion of a conventional harvester used for harvesting chestnuts.

Embodiments of the present invention will be described in detail below. is not limited to the contents of In this specification, when the expression "~" is used, it is used as an expression including the numerical values before and after it.

[Harvesting machine of the present invention]
The harvesting machine of the present invention comprises a multiple brush wheel section in which a plurality of brush wheels each having a rod-shaped member arranged radially around a shaft member are stacked, and a handle section connected to the shafts at both ends of the multiple brush wheel section. and a storage section having an opening facing the direction of rotation of the multiple brush wheel section, the chestnut harvesting machine comprising:
In the multiple brush wheel portion, a hard brush wheel in which the rod-shaped member is a hard member and a soft brush wheel in which the rod-shaped member is a soft member are arranged between a plurality of the hard brush wheels in the multiple brush wheel portion. and chestnut harvesters.

[Harvesting machine of the present invention]
FIG. 1 is a schematic cross-sectional side view of a first embodiment of a harvester 10 of the present invention. FIG. 2 is a schematic front view of the multiple brush wheel section 20 according to the first embodiment of the harvester of the present invention. The harvester 10 of FIG. 1 is a schematic cross-sectional view of the soft brush wheel 4 portion of the multiple brush wheel section 20 (FIG. 2).

The harvester 10 has a multiple brush wheel section 20 , a handle section 5 and a housing section 1 . The multiple brush wheel section 20 has hard brush holes 3 and soft brush wheels 4 . The harvester 10 can have a structure conforming to a conventional chestnut harvester shown in FIG. 7(a) and the like.

The harvester 10 can harvest chestnuts by being pulled by the user holding the handle 5. - 特許庁Both chestnut balls 911 and 912 and chestnut nuts 92 can be harvested. A user holds the grip portion 5 and pulls it from the multiple brush wheel portion 20 toward the storage portion 1 side. This is a movement towards the right of the view in FIG. As a result, the soft brush wheels 4 and the like of the multiple brush wheel portion 20 rotate rightward and clockwise in FIG. The soft brush wheel 4 or the like picks up the chestnuts while rotating and feeds the chestnuts into the storage part 1. - 特許庁With such movement, the harvester 10 can harvest the chestnuts that have fallen on the ground into the container 1 .

The soft brush wheel 4 has a large number of soft rod-shaped members molded from soft materials, and a chestnut 92 can be sandwiched between these rod-shaped members. When picking up chestnut burrs 911 and 912 that are larger than the chestnut 92, the soft rod-like member bends to widen the space between the brushes to sandwich the chestnut burrs 911 and 912.例文帳に追加

When the rod-shaped member 41E and the rod-shaped member 41F come into contact with the chestnut burrs 912 on the ground, the chestnut burrs 912 are bent according to the size of the chestnut burrs 912 to widen the gap between them. The burrs 911 are sandwiched between the rod-shaped members 41A and 41B of the soft brush wheel 4 and move upward as the soft brush wheel 4 rotates. Moreover, the rod-shaped member 41C and the rod-shaped member 41D are widened enough to sandwich the chestnut 92 therebetween. The chestnut burs 911 and 912 and the chestnut nut 92 picked up from the ground by the soft brush wheel 4 or the like are detached so as to be repelled by the claws 11 and are housed in the housing portion 1.例文帳に追加

[Handle part 5]
The handle portion 5 is a portion that a user holds when using the harvester 10 . The handle portion 5 is connected to shafts at both ends of the shaft member 2 . In addition, the handle 5 is longer than the diameter of the brush wheel and has a shape such that the user can hold it from the tip of the basket, and the length is such that it is easy to hold at the height of the user's waist or chest.

[Container 1]
The storage part 1 is a part for storing chestnuts when the harvester 10 is used. The accommodation portion 1 is provided with an opening facing the direction of rotation of the multiple brush wheel portion. In the harvester 10 of FIG. 1, since the soft brush wheel 4 (multiple brush wheel portion 20) rotates clockwise, a rod-shaped member, a chestnut 92, and a chestnut burr 911 are arranged from left to right above the soft brush wheel 4. , 912 are open towards these rotations for movement. The storage part 1 may have such a structure by simply opening the entire upper surface, or may be closed on the right side in FIG. 1 in order to prevent the stored chestnuts from falling.

The storage unit 1 can be arranged to move in front of the multiple brush wheel unit 20 when harvesting chestnuts. For this reason, the lower part of the storage part 1 holds the handle part 5 by a frame that supports a basket placed at a position higher than the size of the chestnut so as to avoid the chestnuts, or by a frame connected to the handle part 5. It is preferable to have a structure in which the chestnut is positioned higher than the chestnut in association with the lifting.

[Claw 11]
The claw 11 is provided in front of the housing portion 1 and arranged between rod-like members such as the soft brush wheel 4 (see FIG. 2). One end of the claw 11 is connected to the opening of the housing portion 1 . The other end of the pawl 11 can be arranged near the upper end of the shaft member 2 of the multiple brush wheel portion 20 . The chestnuts caught in the multiple brush wheel portion 20 are separated from the multiple brush wheel portion 20 by the claws 11 so as to be repelled by the claws 11, and are stored in the storage portion 1 so as to be sent.

[Multiple brush wheel unit 20]
The multiple brush wheel portion 20 has a shape in which a plurality of brush wheels are stacked as shown in FIG. 2 and the like. The multiple brush wheel section 20 has a hard brush wheel 3 and a soft brush wheel 4 . Between the hard brush wheels 3, the soft brush wheels 4 are arranged, as shown in FIG.

[Brush wheel]
FIG. 3 is a schematic diagram of a brush wheel. The brush wheel includes a hard brush wheel 3 formed by molding a hard member into a rod-shaped member or the like, and a soft brush wheel 4 formed by molding a rod-shaped member or the like from a soft member. The hard brush wheel 3 and the soft brush wheel 4 may have the same shape except that the members used for molding them are different. In the present application, a portion that can be formed in a common shape between the hard brush wheel 3 and the soft brush wheel 4 may be simply referred to as a "brush wheel".

The brush wheel has a large number of rod-shaped members 31 (41) arranged radially around a shaft member 2 serving as a central shaft member. The brush wheel may have a shape in which a large number of plate-shaped members each having a portion for attaching a rod-shaped member to a plate-shaped shaft member are stacked to form the multiple brush wheel portion 20 . Alternatively, a part for attaching a rod-shaped member is provided in stages on a shaft member having a trunk length, and a stage in which a soft rod-shaped member is installed in each stage and a stage in which a hard rod-shaped member is installed are arranged in layers. The brush wheel portion 20 may also be used.

The size of the brush wheel and the number of rod-like members arranged can be appropriately set according to the conditions of the chestnut orchard, the size of the harvester 10, and the like. These are appropriately set according to the pitch intervals of the bar members (P1 in FIG. 3, P21 and P22 in FIG. 2) and the like. The overall length L1 shown in FIG. 3 can be, for example, approximately 40 to 80 cm.

[Hard brush wheel 3]
The hard brush wheel 3 is formed by molding a rod-like member 31 of a hard material. As the hard member, a resin material having high strength and high hardness can be used. For example, ABS or the like can be used. The hard brush wheel 3 may be the brush wheel of "Bag-A-Nut (trademark) Chestnut Harvesters" (Bag-A-Nut, LLC.) disclosed in the conventional non-patent document 1, or may be the same. You can use the one that conforms to

[Soft brush wheel 4]
The soft brush wheel 4 is formed by molding a rod-like member 41 of a soft material. Any soft member may be used as long as it can be deformed to such an extent that a burr or the like can be sandwiched between the plurality of rod-like members 41 . A so-called rubber-like resin or the like can be used. For example, a thermoplastic elastomer or the like can be used, and as a more specific example, a thermoplastic polyurethane elastomer (TPU) or the like can be used.

The flexibility of the soft brush wheel 4 should be such that it can be bent to the extent that a burr can be sandwiched between a plurality of rod-shaped members. On the other hand, after collecting the chestnuts in the storage unit 1, it is preferable to restore the pitch interval so that either the chestnuts or the chestnuts in the bowl can be stored next, so it is preferable to have elasticity. Considering the wear resistance of the rod-shaped member of the soft brush wheel when it is used for a long period of time, it is preferable that the surface has a certain degree of hardness. A hard brush wheel may be deformed and bent if it is pulled strongly, but a strong force is required and it will not bend sufficiently with a load that rides on a burr. Whitening and plastic deformation may occur.

In evaluating whether the rod-shaped member used for the soft brush wheel has appropriate elasticity and flexibility, evaluation can be performed, for example, as follows. FIG. 4 is a schematic diagram showing how the amount of deflection of the brush wheel is measured by this method. A state in which the base portion 45 is fixed to the fixing portion 8 and the shaft of the bar member 41b0 is arranged substantially horizontally in the same manner as when the bar member 41b0 is fixed to the shaft member of the brush wheel is defined as the reference position h0 in the initial state. Then, when the weight 81 is hung from the spherical portion 42 at the tip, the rod-shaped member 41b1 is bent to the height of the bending position h1. The vertical length between the reference position h0, which is the amount by which the tip of the bent rod member 41b1 is bent from the reference position h0, and the bending position h1 can be defined as the bending amount H01. It is preferable that the bending amount (50 gf) when the weight is 50 g is 10 mm or more, 15 mm or more, or 20 mm or more. Alternatively, when a weight of 20 g is hung from the spherical portion of the tip, the amount of deflection of the tip of the rod-like member from the initial position can be used as the amount of deflection. The bending amount (20 gf) may be 10 mm or more, 15 mm or more, or 20 mm or more. Moreover, this rod-like member has elasticity to such an extent that the tip can return to the vicinity of the initial position (within ±3 mm or about ±2 mm of the initial position) when the weight is removed and the load is released. The upper limit of the amount of deflection (50 gf, 20 gf) does not have to be set because there is a limit inevitably due to the length of the rod-shaped member, etc. The upper limit may be 40 mm or less.

In this embodiment, a soft member molded by a 3D printer is used using Ultrafuse TPU85A manufactured by BASF. The amount (20 gf) was about 20 mm and returned to the origin after the load was released. On the other hand, the member used for the hard brush wheel was less than 1 mm in deflection amount (50 gf) and almost no deflection was caused by the above-described method.

A soft brush wheel 4 is arranged between the hard brush wheels 3 . The number of hard brush wheels 3 and soft brush wheels 4 can be appropriately set according to the usage environment and the like. A hard brush wheel is overlapped with a plurality of stages (for example, 1 to 5 stages or 2 to 4 stages) of soft brush wheels, sandwiched between the hard brush wheels, and a plurality of layers of the soft brush wheels are further stacked and further sandwiched between the hard brush wheels. By repeating this process, the number of stages corresponding to the width W1 of the brush wheel portion that matches the design is stacked.

As shown in FIG. 2, the width W1 of the brush wheel portion can be appropriately designed according to the size of the chestnut orchard to be used. W1 can be, for example, about 30 cm to 1.5 m or about 40 cm to 1.2 m.

As a representative size, when the width is about 40 cm, the pitch interval (P21, P22) of the rod-shaped members is about 2 cm, and if about 19 stages of brush wheels are stacked, one hard stage and two soft stages are obtained. Furthermore, it is possible to stack one hard layer, two soft layers, etc., and use both ends as hard brush wheels.

[Pitch interval]
The pitch between the rod-like members of the hard brush wheel and soft brush wheel can be about 15 mm to 40 mm, 18 mm to 30 mm, or 20 to 28 mm. As shown in FIG. 2, the pitch interval has portions set as pitch intervals P21 and P22 between rod-shaped members of adjacent brush holes that are arranged so as to overlap. Further, as shown in FIG. 3, there is a portion that is set as a pitch interval P1 between adjacent tips of radially arranged rod-shaped members in the same brush wheel. These pitch intervals P21, P22, and P1 may be set to the same degree, or may be set to each interval.

By deforming the soft brush wheel, even a chestnut bur that is larger than the pitch between the rod-shaped members fitted to the chestnut can be pinched. On the other hand, the brush wheel portion also functions as a wheel when the harvester 10 is moved. Therefore, if the brush wheel is designed only with a soft brush wheel, the rod-shaped member may be deformed by the weight of the harvester 10 during movement, making it difficult to move. By also using a hard brush wheel in this brush wheel portion, the hard brush wheel can maintain the main strength as a wheel. In addition, excessive deformation of the soft brush wheels can be suppressed by arranging the hard brush wheels at intervals of a plurality of stages.

[Bar-shaped member]
FIG. 5 is an image of a production example of a rod-shaped member used in the soft brush wheel of the harvester of the present invention. It is preferable that the rod-like member has a hook portion on the tip side of the outer periphery. The rod-shaped member 41a has a shape that is assumed to be used by being inserted into and attached to a shaft member (see FIG. 6, etc.). The left end of FIG. 5 is the tip of the outer diameter of the brush wheel. The rod-shaped member 41a has a first hook portion 42 at the tip of the left end of a rod-shaped shaft portion 44, and further has a second hook portion 43 on the right side slightly inside from the tip. Moreover, the rod-shaped member 41a has an attachment portion 46 to the shaft member at the right end of the shaft portion 44 .

An example of dimensions will be described below using the rod-like member 41a as an example.
L11 is a length corresponding to the length of the rod-shaped member ahead of the shaft member. L11 is appropriately set within a sufficient bending range according to the diameter of the entire brush wheel, the diameter of the shaft member, and the like. For example, about 50 mm to 120 mm can be used as a guideline, and the lower limit may be about 60 mm or more, or about 70 mm or more, and the upper limit may be 110 mm or less, or 100 mm or less.
L21 is the center-to-center distance between the first hook 42 and the second hook 43 . L21 is appropriately set in order to stabilize a state in which a chestnut bur or a chestnut is sandwiched. For example, 10 mm to 25 mm, 15 mm to 20 mm, or 16 mm to 18 mm can be used as a guideline.
L22 is the length from the second hook portion 43 to the end of the shaft member when it is inserted into the shaft member. L22 can be appropriately set based on L11 and the like regarding the entire length of the rod-shaped member. For example, about 30 mm to 80 mm, about 35 mm to 70 mm, or about 45 to 60 mm can be used as a guideline.
D11 and D12 are widths corresponding to the diameters of the hooks designed in a substantially spherical shape, and are larger than the width W21 of the shaft of the rod-shaped member. D11 and D12 can be about 6 mm to 10 mm or about 7 mm to 9 mm as a guideline.
W21 is the width corresponding to the thickness of the shaft of the rod-shaped member. The thickness of this shaft affects the ease of bending, and the chestnut is caught on the hook due to the difference in level with the hook. W21 can be approximately 3 mm to 6 mm, or approximately 4 mm to 5 mm.

In the manufacturing example shown in FIG. 5, L11 is 75 mm, L21 is 16.9 mm in center distance, L22 is 50 mm, D11 is 8.5 mm, W21 is 4.6 mm, and D12 is 8.3 mm.

A rod-shaped member 41b in FIG. 5B is a manufacturing example of another rod-shaped member according to the rod-shaped member 41a. Here, the second hooking portion 43 has an oval shape. Also, considering the stability of the base side, a base portion 45 is provided.

By providing a spherical or elliptical hook 42 and a hook 43 at the tips of the rod-shaped members 41a and 41b, there is unevenness from the tip to the inside, and these function as hooks. .

FIG. 6 is an image of a soft brush wheel in which a plurality of rod-shaped members 41a shown in FIG. Here, the shape is such that it is inserted into the groove from the side, so that it is difficult to pull out. FIGS. 6(a)-(c) correspond to enlarged images of a portion of the soft brush wheel. 6(d) to (f), hard brush wheels (green, dark color part in the image) are provided as layers at both ends, and four layers of soft brush wheels (white, light color part in the image) are provided. are provided.

As shown in FIG. 6(a), in this manufacturing example, rod members can be inserted into the front and back of the shaft member, respectively. When the rod-shaped members are attached radially, the pitch between the tips of the rod-shaped members is about 3 cm.

FIG. 6(b) is an example of sandwiching a chestnut. Since chestnuts are about 3 cm long, the brush wheel can pick up the chestnuts by getting them between the rod-like members and catching them on the hooks.

FIG. 6(c) is an example of inserting chestnuts. Since the burrs are about 8 cm long, they are large enough to be difficult to get into the pitch interval of about 3 cm. However, since the rod-like member is made of a soft material, the shaft portion of the rod-like member is deformed, and the gap widens according to the burrs. As a result, the tip of the chestnut burr is less likely to protrude from the outer diameter of the tip of the brush wheel, and the chestnut burr can be picked up. In addition, since the overall shape of the chestnut burrs is the size including the burrs, the package in the center is the size of a plurality of stored chestnuts. For this reason, if the pitch interval can be widened to about 5 cm to 8 cm, the chestnut burrs will be present in the gaps between the rod-shaped members, and it is possible to sandwich the chestnut burrs.

FIGS. 6(d) to 6(f) are unit examples of the multiple brush wheel section. It was verified whether it is possible to insert a model product of chestnuts and chestnuts while rotating them by arranging the soft brush wheels between the hard brush wheels. As a result, it was confirmed that both chestnut balls and chestnut nuts could be sandwiched.

Thus, according to the harvester of the present invention, chestnuts and chestnuts in balls can be harvested at the same time. It is believed that this is because the soft brush wheels are arranged between the hard brush wheels, and when the soft brush wheels are deformed, the burs can be picked up.

[chestnut]
The harvester of the present invention can harvest chestnuts such as chestnut balls and chestnut nuts. Chestnuts vary in size depending on the variety, cultivation environment, period, individual differences, etc., but generally the sizes are as follows. Chestnut balls are generally about 7 cm to 12 cm in size. In addition, chestnuts are about 2 cm to 5 cm in size. Chestnuts are categorized into S size less than 29mm, M size 29mm to less than 32mm, L size 32mm to less than 35mm, 2L size 35mm to less than 39mm, 3L size 39mm or more, and 4L size 43mm or more. may occur. By appropriately setting the pitch interval of the tips of the rod-shaped members according to the size of chestnuts in the chestnut orchard to be used, chestnuts of various sizes can be harvested.

[Harvest machine (reference example)]
FIG. 7 is a perspective view of a conventional harvester used as a reference for the present invention. FIG. 8 is a rear view of a multiple brush wheel portion of a conventional harvester used for harvesting chestnuts. FIG. 9 is a rear view of a multiple brush wheel portion of a conventional harvester used for collecting chestnuts. The chestnut harvesting machine shown in FIGS. 7 to 9 will be described below as a harvesting machine of a reference example. The harvester of the present invention can appropriately refer to the structure of the harvester of the reference example, and solves the problem of the harvester of the reference example.

FIG. 7(a) is a perspective view showing the overall image of the harvester. This harvester is about 100 cm long, about 60 cm wide and about 110 cm high. In addition, although the handle portion is tilted to the left side here, the handle portion is tilted to the right side in FIG. 7(a) and pulled when in use. By pulling the handle portion, the chestnuts are lifted so as to be entangled with the multiple brush wheel portion on the left side of FIG. 7(a) and stored in the basket on the right side. FIG. 7(b) is an example of a brush wheel used in the multiple brush wheel section. This brush wheel has 63 rod-shaped members arranged radially around a central shaft member. The distance between the tips of adjacent bar-like members is about 2 cm, which is about the size of a chestnut. The brush wheel in FIG. 7(b) is molded from hard resin corresponding to the hard brush wheel of the present invention.

FIG. 8 shows the harvester ready for harvesting chestnut balls. This state is a multiple brush wheel portion in which a shaft member serving as a spacer is arranged between hard brush wheels. The spacer has a cylindrical outer shape and a thickness of about 5 cm. The spacer is only the central shaft member portion of the brush wheel which is not provided with the rod-like member. For this reason, the space between the hard brush wheels becomes a gap without a rod-like member, and the burrs can enter. The burrs are picked up by being caught by the brush (bar member) of the hard brush wheel. On the other hand, since the space between the spacer portions is too large, the chestnuts, which are usually about 2.5 cm, are difficult to be caught between the brushes and cannot be harvested.

FIG. 9 shows the harvester ready for harvesting chestnuts. In this state, hard brush wheels as shown in FIG. 7(b) are laid out as a multiple brush wheel portion. In this state, the pitch between the tips of the rod-like members is generally about 2 cm to 3 cm, and the chestnuts are efficiently caught between the hard brush wheels and picked up. On the other hand, the burrs are too large to be sufficiently inserted between the rod-shaped members, and when the multiple brush wheel section passes over the burrs, they run on the burrs. The multiple brush wheel part of the harvester also serves as a wheel when the harvester moves. For this reason, if there are chestnuts in the burrs, the harvester will be in a floating state, and the operation will become unstable. Also, burrs cannot be harvested while they are on the ground without being fully entangled in multiple brush wheel sections.

As mentioned above, the harvesting and transportation of chestnuts has not been mechanized. Therefore, in order to maintain the chestnut orchard, it is essential to significantly reduce working hours and lighten the workload. The harvester of the present invention can stably harvest chestnuts in burrs and chestnuts, and can be used for the purpose of unmanned harvesting, transportation, and collection work in chestnut orchards, lightening labor, and promoting the electrification of agricultural machinery. can contribute.

INDUSTRIAL APPLICABILITY The present invention can be used for harvesting chestnuts and is industrially useful.

10 harvester 1 basket 11 claw 2 shaft member 20 multiple brush wheel part 3 hard brush wheel 4 soft brush wheel 31, 41, 41A to 41F, 41a, 41b rod-like member 42 spherical part 43 oval part 44 shaft part 45 base part 46 attachment part 5 handle part 8 fixing part 81 weight 911, 912 chestnut burrs 92 chestnut

Claims (3)

a multiple brush wheel portion in which a plurality of brush wheels each having a rod-shaped member arranged radially around a shaft member are stacked;
a handle portion connected to shafts at both ends of the multiple brush wheel portion;
a chestnut harvesting machine comprising:
The multiple brush wheel portion comprises a hard brush wheel in which the rod-shaped member is a hard member, and a soft brush wheel in which the rod-shaped member is an elastic soft member, which is arranged between the plurality of hard brush wheels in the multiple brush wheel portion. A chestnut harvester having a brush wheel and a. The rod-shaped member has a hook on the tip side of the outer circumference,
The harvester according to claim 1, wherein the pitch distance between the bar members of the hard brush wheel and/or the soft brush wheel is 15 mm to 40 mm. 3. Harvesting machine according to claim 1 or 2, having pawls arranged between the bar members of the hard brush wheel and the soft brush wheel and connected to the cage.

Images