JP7081642B2 - Crop extractor - Google Patents

Description

The present invention relates to a crop extractor for extracting root vegetable crops such as radish from a field.

The technique described in Patent Document 1 is known as a crop extractor for extracting root vegetable crops such as radish from a field and for extracting a crop firmly rooted in the field from the soil. The crop extraction machine described in Patent Document 1 raises the foliage of a crop and raises it with a device, sandwiches the caused foliage with a extraction device, pulls it out from the field, and uses a cutting device arranged below the extraction device to remove the foliage. By cutting the part, the harvested part of the crop is returned to the field, and the worker can harvest the crop with a light force.

Japanese Unexamined Patent Publication No. 2016-214199

In the configuration described in Patent Document 1, the extraction device has a pair of belts that incline upward toward the rear, and the foliage portion is sandwiched between the pair of belts, so that the crop is extracted. At this time, although the foliage portion of the portion sandwiched by the belt is dense, the portion of the foliage portion that is not sandwiched, that is, the position cut by the lower cutting device, is not denser than the belt portion. There is. If the foliage is not dense, it may not be cut smoothly when the foliage is cut by the cutting device, and the foliage may be caught by the cutting device. If the foliage is not cut smoothly, it takes time for the harvested part of the crop from which the foliage was cut to fall into the field, and the crop returned to the field collapses, making it difficult for the worker to lift and harvest. There is a problem that it is pulled out excessively and the vicinity of the lower end of the harvesting part of the crop is broken, and the commercial value is lowered.

In addition, the holding force of the pulling device needs to be adjusted according to the diameter and amount of the foliage of the crop, but the upper side in the transport direction for pulling out the crop from the field and the lower side in the transport direction where the separated foliage is released. Since the holding force required on the side is different, it may be necessary to adjust the holding force of a part of the front and back. At this time, it is necessary to remove the protective cover that covers the upper part of the extraction device. There is a problem that extra labor is required for the work.

In addition, on the upper side of the extraction device in the transport direction, clogging may occur when a large diameter or large amount of foliage is pinched, but in order to clear this clogging, the long protective cover must be removed in the front and back. There is a problem that extra labor is required for the attachment / detachment work.

It is a technical subject of the present invention to make the foliage portion dense at the cutting position and to reduce the labor required for attaching and detaching the protective cover.

The above-mentioned problem of the present invention is solved by the following solution means.

The invention according to claim 1 is a drawing device (21) for pulling out crops by transporting them to the rear side and upward in the traveling direction as the machine body (2) progresses, and a crop being pulled out by the pulling-out device (21). In a crop extraction machine provided with a cutting portion (61) for cutting the foliage portion of
The cutting portion (61) arranged corresponding to the transport region (44a) in which the pulling device (21) transports the foliage portion, and the cutting portion (61) with respect to the transport direction of the pulling device (21). ), The foliage guide member (46) is provided to guide the portion of the foliage portion that is not sandwiched by the extraction device (21) toward the center of the transport region (44a).
A raising device (26) that raises the foliage of the crop and guides it to the pulling device (21) is provided on the front side of the machine body (2), and the raising support member (22) that supports the raising device (26) is pulled out. Provided on the upper side of the device (21) in the transport direction
A protective cover (111) that covers the extraction device (21) is detachably provided.
The protective cover (111) is located at the same position where the raising support member (22) is provided on the machine body (2), or at a position in front of the position where the raising support member (22) is provided on the machine body (2). ) Is a crop extraction machine characterized in that it can be divided into front and back .

The invention according to claim 2 is
The protective cover (111) is composed of a front cover (111a) and a rear cover (111b).
The crop extraction machine according to claim 1, wherein the front cover (111a) and the rear cover (111b) are independently and detachably configured .

In the invention according to claim 3, the cut portion (61) has a base supported on one side in the width direction of the machine body (2) and the cut portion (2) from the one side with respect to the width direction of the machine body (2). It has a tip portion extending to the other side beyond the transport region (44a) and has a tip portion.
The crop extraction machine according to claim 1 or 2 , wherein the crop extraction device (21) is arranged in an inclined posture toward the center of the transportation region (44a) toward the downstream side in the transportation direction.

The invention according to claim 4 is arranged on both sides of the transport region (44a) in the width direction of the airframe, and is inclined toward the center of the transport region (44a) as it goes downstream in the transport direction. The crop extraction machine according to any one of claims 1 to 3 , further comprising a foliage guide member (46).

A first related invention relating to claims 1 to 4 is a drawing device (21) having a belt-shaped transport member (44) that sandwiches and rotates the foliage portion, and the transport member (44). It is a crop extraction machine characterized by comprising a vibrating member (102) that vibrates the foliage guide member (46) by transmitting a drive from the foliage guide member (46).

Further, claims 1 to 4 , and a second related invention related to the first related invention are supported by the wheels (8, 18) supported by the machine (2) and the body (2). The vehicle height is raised and lowered by the driven drive device (4), the traveling transmission case (6) for transmitting the driving force of the driving device (4) to the wheels (8, 18), and the traveling transmission case (6). It is characterized by being provided with a vehicle height adjusting device (91 to 94) for adjusting the vehicle height and a load absorbing member (137, 140) provided in the vehicle height adjusting device (91 to 94) to absorb a traveling load. It is a crop extraction machine.

Further, claims 1 to 4 , and a third related invention related to the first and second related inventions include a triggering device (26) that raises the foliage portion and guides the foliage portion to the extraction device (21). The raising support member (22) which is supported by the raising adjustment device (72) and the pulling-out device (21) to raise and lower the raising device (26) to adjust the vertical position, and supports the raising adjustment device (72). ) And above the extraction device (21) and above the upper end of the raising support member (22), and at a position avoiding the transport area (44a) to load crops. It is a crop extraction machine characterized by being equipped with a possible loading platform (151).

Further, in the fourth related invention relating to claims 1 to 4, the raising device (26) that raises the foliage portion and guides the foliage portion to the pulling device (21), and the transport direction of the pulling device (21). It is supported by the machine body (2) at the position on the upstream side of the above, and is detachably supported by the raising support member (22) that supports the raising device (26) and the machine body (2), and is above the drawing device. The protective cover (111) is provided with the protective cover (111) divided at the same position as the position supported by the airframe (2) or at a position in front of the raised support member (22). It is a crop extraction machine characterized by.

According to the first aspect of the present invention, by guiding the foliage portion toward the center of the transport region (44a) by the foliage guide member (46), the foliage portion can be made denser at the cutting position as compared with the conventional case. can. Therefore, poor cutting of the foliage portion can be reduced, the timing at which the crop is returned to the field can be stabilized, and the harvested portion of the crop can be reduced from collapsing or breaking.

Further, the number of parts can be reduced as compared with the case where the foliage guide members (46) are provided on both sides.

Further , it is necessary to remove the raising support member (22) when removing the protective cover (111), as compared with the case where the protective cover (111) is not divided according to the position where the raising support member (22) is supported. This eliminates the problem and facilitates the work of attaching and detaching the protective cover (111). Therefore, when the foliage portion is clogged inside the extraction device (21), the work efficiency of the work of removing the foliage portion by removing the protective cover (111) can be improved, and the labor of the operator is also reduced.

According to the invention of claim 2, in addition to the effect of the invention of claim 2, when the rear cover (111b) is attached or detached, it is not necessary to remove the raising support member (22) from the extraction device (21). , Workability is improved.

Further, since the front cover (111a) and the rear cover (111b) can be attached and detached independently, the holding force can be individually adjusted between the upper side in the transport direction and the lower side in the transport direction of the extraction device (21).

According to the invention of claim 3, in addition to the effect of the invention of any one of claims 1 to 3, cutting is performed by a foliage guide member (46) arranged on one side of the transport region (44a). By guiding the foliage portion extending on the side opposite to the portion (61) toward the transport region (44a), cutting at the cutting portion (61) can be facilitated.

Further, when the foliage guide member (46) is along the transport direction, it is possible to prevent excessive resistance from being applied to the foliage portion, and it is possible to prevent the crop from being pulled out and transported from being hindered and the fall timing from being delayed. Will be done.

According to the invention of claim 4 , in addition to the effect of the invention of any one of claims 1 to 3, the foliage guide member (46) arranged on both sides of the transport region (44a) is used for the foliage portion. By guiding the above, the spread of the foliage can be concentrated from both sides toward the center of the transport region (44a).

Further, according to the first related invention, in addition to the effect of the invention according to any one of claims 1 to 4 , the foliage guide member (46) is vibrated to make it peristaltic. The foliage portion in contact with the foliage guide member (46) can be sent to the downstream side. Further, even if the foliage portion is entangled with the foliage guide member (46), it can be removed by vibration. Therefore, it is possible to reduce the delay in cutting due to the entanglement of the foliage portion and the disorder of the timing when the crop from which the foliage portion has been cut returns to the field.

Further, according to the second related invention, in addition to the effect of the invention according to any one of claims 1 to 4 or the first related invention, the vehicle height adjusting device (91 to 94) is used. The vehicle height can be adjusted, and even if a load is applied to the wheels (8, 18) during traveling, it can be absorbed by the load absorbing member (137, 140), and the influence on the drive device (4) can be reduced. .. Therefore, it is possible to stabilize the running and improve the durability of the drive device (4).

Further, according to the third related invention, in addition to the effect of the invention according to any one of claims 1 to 4 , or the first or second related invention, the crop is placed on the loading platform (151). Can be loaded, and crop recovery work can be easily performed. In addition, the crops loaded on the loading platform (151) can be restrained from falling by the raising support member (22).

Further, according to the fourth related invention, in addition to the effect of the invention according to any one of claims 1 to 4 , the protective cover corresponds to the position where the raising support member (22) is supported. Compared with the case where (111) is not divided, when the protective cover (111) is removed, it is not necessary to remove the raising support member (22), and the work of attaching and detaching the protective cover (111) becomes easy. Therefore, when the foliage portion is clogged inside the extraction device (21), the work efficiency of the work of removing the foliage portion by removing the protective cover (111) can be improved, and the labor of the operator is also reduced.

FIG. 1 is a plan view of the crop extractor of the embodiment. FIG. 2 is a front view of the crop extractor of the embodiment. FIG. 3 is a right side view of the crop extractor of the embodiment. FIG. 4 is a left side view of the crop extractor of the embodiment. FIG. 5 is a rear view of the crop extraction machine of the embodiment. FIG. 6 is an explanatory diagram of a main part of the transport section of the crop extraction machine of the embodiment. FIG. 7 is an explanatory view of a main part of a mold alignment portion of the crop extraction machine of the embodiment, FIG. 7A is a plan view, and FIG. 7B is a side view. FIG. 8 is an explanatory diagram of another embodiment of the embodiment, FIG. 8A is an explanatory diagram of a configuration in which the foliage guide is vibrated, and FIG. 8B is an explanatory diagram of a configuration in which the cutting blade is vibrated. 9A and 9B are explanatory views of a stand in the crop extraction machine of the embodiment, FIG. 9A is an explanatory diagram of a removed state, FIG. 9B is an explanatory diagram of a crop fall suppression state, and FIG. 9C is an explanatory diagram of a stored state. .. 10A is an explanatory diagram of an actuator of an embodiment, FIG. 10A is a schematic diagram, FIG. 10B is an explanatory diagram of an example of a shock absorbing unit, and FIG. 10C is an explanatory diagram of another example of the shock absorbing unit. 11A and 11B are explanatory views when a loading platform is provided in the crop extraction machine of the embodiment, FIG. 11A is a schematic diagram, and FIG. 11B is an explanatory diagram of a moving mechanism of the loading platform.

Embodiments of the present invention will be described below.

FIG. 1 is a plan view of the crop extractor of the embodiment.

FIG. 2 is a front view of the crop extractor of the embodiment.

FIG. 3 is a right side view of the crop extractor of the embodiment.

FIG. 4 is a left side view of the crop extractor of the embodiment.

FIG. 5 is a rear view of the crop extraction machine of the embodiment.

The crop extraction machine 1 of the embodiment of the present invention has a pair of left and right mainframes 2 extending in the front-rear direction. The main frame 2 has a horizontal portion 2a and an inclined portion 2b extending diagonally upward from the rear end of the horizontal portion 2a. A traveling transmission 3 as an example of a driving device is supported at the rear end of the inclined portion 2b. Behind the traveling transmission 3, an engine 4 as an example of an internal combustion engine, which is an example of a driving device, is arranged. The drive from the engine 4 is transmitted to the traveling transmission 3.

The left and right rear wheel transmission cases 6L and 6R are supported by the traveling transmission 3. In the internal space of the rear wheel transmission case 6L on the left side of the traveling transmission 3, an inner case 6a is provided so as to be slidable in the left-right direction along the rear wheel transmission case 6L on the left side.

In the internal space of the inner case 6a, a telescopic traveling transmission shaft 6b for transmitting a driving force from the traveling transmission 3 is provided so as to be expandable and contractible in the left-right direction. The telescopic traveling transmission shaft 6b is mounted so as to expand and contract in conjunction with the movement of the inner case 6a in the left-right direction.

The rear wheel transmission case 6L on the left side has a prismatic shape such as a square or a hexagon, and the internal space has the same shape. The outer shape of the inner case 6a is a prism shape like the rear wheel transmission case 6L, but the internal space is a circle having a diameter larger than that of the telescopic traveling transmission shaft 6b.

The left rear wheel transmission case 6L is rotatably provided on the traveling transmission 3, and when the left rear wheel transmission case 6L is rotated, the inner case 6a rotates, but the telescopic traveling transmission shaft 6b does not rotate. do.

On the other hand, on the right side of the traveling transmission 3, a rear wheel transmission case 6R on the right side is rotatably provided, and a traveling transmission shaft 6c is provided in a circular internal space. The outer shape of the rear wheel transmission case 6R on the right side may be circular or prismatic.

Chain cases 7 (7L, 7R) are provided at the outer ends of the telescopic traveling transmission shaft 6b and the traveling transmission shaft 6c, respectively. Rear wheels 8 (8L, 8R) are supported on the lower side of the left and right chain cases 7, respectively. Therefore, the rotation from the engine 4 is transmitted to the rear wheels 8 through the traveling transmission 3, the left and right rear wheel transmission cases 6L and 6R, and the chain case 7.

With the above configuration, when the inner case 6a is moved in the left-right direction along the left rear wheel transmission case 6L, the left chain case 7L and the left rear wheel 8L can be brought closer to or separated from the main frame 2. .. As a result, the left-right spacing of the left and right rear wheels 8L and 8R can be changed according to the ridge width, and the height of the machine can be prevented from being different in the left-right direction. It can be kept horizontal and the crops can be pulled out efficiently.

After adjusting the distance between the left and right rear wheels 8L and 8R, the sliding lock pin 6d provided at the outer end (left end) of the left rear wheel transmission case 6L to lock the movement of the inner case 6a. Is inserted to regulate the sliding of the inner case 6a. When sliding the inner case 6a, pull out the sliding lock pin 6d.

A rear cover 11 is supported on the upper part of the traveling transmission 3. Inside the rear cover 11, a U-shaped handle 12 extending rearward is arranged. Further, an operation lever 15, various operation buttons (not shown), indicator lamps, and the like are arranged behind and above the engine 4.

A front wheel support portion 16 extending to the right is supported at the front end portion of the right main frame 2. A front wheel support pipe 17 extending in the vertical direction is supported on the front wheel support portion 16 via a housing 84a of an actuator 84, which will be described later. Although the front wheel support pipe 17 of the embodiment is formed in a hexagonal columnar shape, it can have an arbitrary shape such as a square pipe or a round bar shape. The front wheel 18 is rotatably supported at the lower end of the front wheel support pipe 17.

A drawing device 21 is supported at the front end of the main frame 2. A pair of left and right raising support arms 22 as an example of the raising support member is supported on the upper surface of the pulling device 21. The raising support arm 22 is formed in an inverted U shape. A raising arm 24 is supported at the front end portion of the raising support arm 22 via a rotation shaft 23. A raising device 26 is supported at the front end of the raising arm 24.

The raising device 26 has a pair of left and right lateral raising portions 27 arranged rearward and a front raising portion 28 arranged forward. Each lateral raising portion 27 is connected to the front end of the raising arm 24. Each lateral raising portion 27 has a pair of upper and lower pulleys (not shown) built therein. The rotation axis of the pulley is arranged in the front-rear direction. A belt 27a is stretched on the pulley. A plurality of raising paddles 27b are formed on the belt 27a so as to project outward. In the embodiment, the rotation direction is set so that the paddle 27b moves from the lower side to the upper side in the gap between the laterally raised portions 27 as the pulley rotates.

Similar to the lateral raising portion 27, the front raising portion 28 has a built-in pair of upper and lower pulleys, and the belt 28a is stretched on the pulleys. Further, a plurality of front-raising paddles 28b are formed on the belt 28a. In the front raising portion 28, the rotation axis of the pulley is arranged in the left-right direction. The rotation direction of the front-raising paddle 28b is set so as to move from the lower side to the upper side on the rear side of the front-raising portion 28 as the pulley rotates.

In the first embodiment, the drive from the engine 4 is input to the gearbox 31 in front of the traveling transmission 3, the drive from the gearbox 31 is triggered, and the lateral raising portion on the left side is passed through the chain case 32, the universal joint 33, and the like. It is input to 27L and the upper pulley is driven. The drive input to the left lateral raising portion 27L is transmitted to the pulley of the left front raising portion 28L through a shaft (not shown) penetrating the inside of the left connecting pipe 29a. The drive input to the front raising portion 28L on the left side is transmitted to the pulley of the front raising portion 28R on the right side through a shaft (not shown) penetrating the inside of the front connecting pipe 29b. The drive input to the front raising portion 28R on the right side is transmitted to the pulley of the lateral raising portion 27R on the right side through a shaft (not shown) penetrating the inside of the right connecting pipe 29c.

FIG. 6 is an explanatory diagram of a main part of the transport section of the crop extraction machine of the embodiment.

The extraction device 21 is arranged so as to be inclined upward toward the rear. In FIGS. 1 and 6, the extraction device 21 has a pair of left and right transport portions 41. Each transport unit 41 has a plurality of pulleys 42. Rotation is transmitted from the gearbox 31 to the rearmost pulley 42 via the universal joint 43. A sandwiching transport belt 44 is stretched between the pulleys 42. The sandwiched transport belts 44 are arranged in pairs on the left and right, and are supported by a pulley 42 so that the sandwiched transport belts 44 are pressed against each other in the transport area 44a inside in the width direction. The rotation direction of the sandwiched transport belt 44 of the embodiment is set so as to move from the front to the rear in the transport region 44a. The transport region 44a is set at a position corresponding to the central position in the width direction of the raising device 26.

Therefore, for crops having foliage such as radishes and turnips, when the foliage portion is triggered by the device 26 and enters the transport area 44a, it is pinched by the pinch transport belt 44, and is accompanied by the rotation of the pinch transport belt 44. The crops with the foliage sandwiched between them are configured to be movable backward and upward. The rotation speed of the pinching transfer belt 44 is set to a rotation speed corresponding to the traveling speed of the crop extraction machine 1. Therefore, when the crop is transported by the pinch transport belt 44, the forward traveling speed of the crop extraction machine 1 and the backward moving speed of the pinch transport belt 44 correspond to each other, so that the crop is positioned in the front-rear direction. Does not fluctuate, rises on the spot, and is pulled out of the field.

FIG. 7 is an explanatory view of a main part of a mold alignment portion of the crop extraction machine of the embodiment, FIG. 7A is a plan view, and FIG. 7B is a side view.

In FIG. 7B, a foliage guide 46 as an example of a foliage guide member is fixedly supported on the lower surface of the extraction device 21. In FIG. 7A, the foliage guide 46 is arranged on the right side in the width direction with respect to the transport region 44a. Further, the foliage guide 46 of the embodiment is formed in a plate shape, and is arranged so as to be inclined inward (left side) in the width direction from the front to the rear. The inner end (rear end, left end) of the foliage guide 46 is set at a position that does not straddle the transport area 44a.

In FIG. 7A, a mold alignment device 51 is arranged below the extraction device 21. The mold alignment device 51 has a pair of left and right mold alignment portions 52. Each mold alignment portion 52 has a plurality of pulleys 53. Rotation is transmitted from the gearbox 31 to the rearmost pulley 53 via the transmission shaft 54 and the chain 56. A model alignment belt 57 is stretched between the pulleys 53.

The model alignment belts 57 are arranged in pairs on the left and right, similar to the sandwiching and transporting belts 44. In addition, unlike the sandwiching and transporting belt 44, the mold alignment belt 57 is arranged along the horizontal direction and does not raise the foliage portion. Further, in the transport region 44a on the inner side in the width direction, the mold alignment belts 57 are arranged with a gap. Therefore, when the foliage portion passes through the gap between the mold alignment belts 57, the foliage portion can move in the vertical direction. The upper surface of the harvested portion (excluding the foliage) of crops such as radish lifted by the pinch transport belt 44, the so-called shoulder portion of the radish, comes into contact with the lower surface of the mold alignment belt 57, and the radish or the like moves further upward. It is regulated not to.

A cutting blade 61 as an example of the cutting portion is fixedly supported on the upper surface of the mold aligning device 51.

The cutting blade 61 is arranged on the left side in the width direction with respect to the transport region 44a. The cutting blade 61 is formed in a plate shape, and a blade portion 61a capable of cutting a foliage portion is formed on the front surface thereof. The cutting blade 61 of the embodiment is arranged so as to be inclined inward (right side) in the width direction from the front to the rear. The inner ends (rear end, right end) of the cutting blade 61 are arranged on the right side of the transport area 44a. Therefore, the cutting blade 61 is arranged so as to straddle the transport region 44a.

(Height adjustment mechanism of the raising part)
A connecting portion 71 for connecting the raising support arms 22 to each other is supported on the upper part of the left and right raising support arms 22. A raising adjustment device 72 is supported at the left end of the connecting portion 71. The raising adjustment device 72 has a handle portion 73 arranged at the rear. The handle portion 73 is rotatably supported around a rotation shaft 73a extending along the inclination direction of the extraction device 21. An actuator 74 for raising and height adjustment is supported at the front end of the handle portion 73. The actuator 74 is configured so that the length of the rotating shaft 73a along the axial direction can be expanded and contracted with the rotation of the handle portion 73.

An adjusting arm 75 is rotatably supported at the front end of the actuator 74 about a rotation shaft 75a. The lower end of the adjusting arm 75 is connected to the raising arm 24. Therefore, when the operator manually rotates the handle portion 73, the actuator 74 expands and contracts, the raising arm 24 moves up and down, and the raising device 26 moves up and down. Therefore, it is possible to adjust the height of the raising device 26 by rotating the handle portion 73.

(Front wheel height adjustment mechanism)
A bracket 81 is supported on the upper surface of the front portion on the right side of the handle 12. The rear end of the transmission shaft 82 extending forward is rotatably supported by the bracket 81. A handle portion 83 for adjusting the height of the front wheels is connected to the rear end of the transmission shaft 82. The front end of the transmission shaft 82 is supported by the upper end of the actuator 84 for adjusting the height of the front wheels. The actuator 84 has a housing 84a extending over an extension of the front wheel support pipe 17. The housing 84a of the embodiment is formed in a hexagonal cylinder shape like the front wheel support pipe 17, and the upper end portion of the front wheel support pipe 17 is housed in the lower portion of the housing 84a. Therefore, the front wheel support pipe 17 is supported with respect to the housing 84a so as to be movable in the axial direction and non-rotatable in the circumferential direction.

Inside the housing 84a, an adjusting shaft 84b extending along the extension of the front wheel support pipe 17 is rotatably supported. Inside the upper end of the housing 84a, a first bevel gear 84c supported by the transmission shaft 82 and a second bevel gear 84d that meshes with the first bevel gear 84c and is supported by the upper end of the adjusting shaft 84b. Is housed. A male threaded portion (described later) is formed at the lower end of the adjusting shaft 84b, and is screw-fitted to a female threaded portion (described later) at the upper end of the front wheel support pipe 17. Therefore, when the handle portion 83 is manually rotated by the operator, the transmission shaft 82 is rotated, and the adjustment shaft 84b is rotated via the bevel gears 84c and 84d. When the adjusting shaft 84b rotates, the front wheel support pipe 17 moves in the axial direction (vertical direction) due to the threaded portion. Therefore, by operating the handle portion 83, the length of the actuator 84 can be expanded and contracted, and the height of the front wheel 18 can be adjusted.

(Rear wheel height adjustment mechanism)
At the rear end of the main frame 2, a support member 91 for adjusting the rear wheels is supported behind the traveling transmission 3 and below the engine 4. The support member 91 for adjusting the rear wheels has a horizontal portion 91a and an inclined portion 91b that inclines upward from both ends of the horizontal portion 91a toward the outside in the width direction. A rotation shaft 92a of the handle portion 92 for adjusting the rear wheels is rotatably supported at the upper end of each inclined portion 91b. An actuator 93 for adjusting the rear wheels is supported at the front end of the rotating shaft 92a. The rear wheel adjusting actuator 93 is configured in the same manner as the raising height adjusting actuator 74.

An upper end portion of the rear wheel adjusting arm 94 is connected to the front end of the rear wheel adjusting actuator 93 via a rotation shaft 94a. The rear wheel adjusting arm 94 is fixed to the left and right rear wheel transmission cases 6L and 6R.

Therefore, when the operator manually rotates the handle portion 92 for adjusting the rear wheels, the actuator 93 expands and contracts, and the rear wheel adjusting arm 94 is moved in the front-rear direction. As a result, of the left and right rear wheel transmission cases 6L and 6R, the corresponding side rotates back and forth, and the chain case 7 attached to the end of the telescopic traveling transmission shaft 6b or the traveling transmission shaft 6c rotates in the vertical direction. Let me.

Therefore, the rear wheels 8 move up and down relatively with respect to the support member 91 for adjusting the rear wheels, the traveling transmission 3, the main frame 2, and the like, and the height of the rear wheels is adjusted. In the embodiment, the handle portion 92, the actuator 93 for adjusting the rear wheels, and the rear wheel adjusting arm 94 are installed on both the left and right sides, and the heights of the left and right rear wheels 8 can be adjusted individually.

The rear wheel height adjusting mechanisms 91 to 94 as an example of the vehicle height adjusting device are configured by the members designated by the reference numerals 91 to 94.

(Action of Example)
In the crop extraction machine 1 of the embodiment having the above configuration, when the crop extraction machine 1 is moved along the ridges when harvesting crops such as radishes and turnips, the foliage portion is caused by the raising device 26. The raised foliage portion is sandwiched by the sandwiching transport belt 44 of the extraction device 21, and is extracted upward as the crop extraction machine 1 progresses. In the crop extraction machine 1 of the embodiment, the radish and the like are not completely extracted, but are extracted halfway from the state where the roots are firmly rooted in the field. Then, when the foliage portion is cut by the cutting blade 61, the harvested portion of the crop falls and is accommodated in the hole planted in the field. Therefore, after passing through the crop extraction machine 1, the crop is in a state of standing in the field without being pulled out, and the worker can recover the crop with a light force.

In the crop extraction machine 1 of the embodiment, the foliage guide 46 is arranged in front of the cutting blade 61. Therefore, the foliage portion that moves backward by the sandwiching transport belt 44 comes into contact with the foliage guide 46 and is guided before being cut by the cutting blade 61. The foliage portion sandwiched by the sandwiched transport belt 44 rises along the inclination of the sandwiched transport belt 44 until the shoulder of the crop contacts the lower surface of the pattern alignment belt 57, but the shoulder of the crop is attached to the pattern alignment belt 57. Upon contact, the foliage portion sandwiched by the sandwiching transport belt 44 is pulled downward. Therefore, a part of the foliage portion (for example, a short foliage portion) falls off from the sandwiching transport belt 44, and the foliage portion expands in the front-back and left-right directions due to gravity in the space between the sandwiching transport belt 44 and the model alignment belt 57. It may end up.

When the foliage portion is widened, the foliage portion is likely to be caught by the cutting blade 61, and the foliage portion is difficult to be cut smoothly. If the cutting with the cutting blade 61 is not performed smoothly, the time when the harvested part falls will be delayed, and the crop will fall out of the hole in the field, causing the crop to fall, making the recovery work troublesome, or the lower part of the crop to fall. If the remaining upper part of the hole moves with the crop extraction machine 1, the crop may be broken or damaged.

On the other hand, in the crop extraction machine 1 of the embodiment, the foliage guide 46 guides the foliage portion toward the center of the transport region 44a on the upstream side of the cutting blade 61. Therefore, as compared with the configuration without the foliage guide 46, the expanded foliage portion is likely to be smoothly cut by the cutting blade 61 in a state of being densely reassembled. Therefore, the timing at which the crop falls into the field is likely to be stable, and the occurrence of problems such as the crop returned to the field falling or breaking is reduced.

Further, the foliage guide 46 of the embodiment is arranged between the sandwiching transport belt 44 and the cutting blade 61, and may come into contact with only the foliage portion of the crop to gather the foliage portions together (make them dense). can.

Further, in the embodiment, the foliage guide 46 is arranged on the right side and the cutting blade 61 is arranged on the left side. Therefore, the foliage portion spreading to the left side can be cut while being gathered by the cutting blade 61, and the foliage portion spreading to the right side can be cut by being guided by the cutting blade 61 by the foliage guide 46. Therefore, the number of parts can be reduced and the manufacturing cost can be reduced as compared with the case where the foliage guides 46 are provided on both sides.

By arranging the foliage guides 46 on both sides of the transport region 44a, it is possible to guide the foliage portion on the left side with the foliage guide.

Further, in the embodiment, the foliage guide 46 is inclined toward the center of the transport region 44a as it goes backward. Therefore, for the guided foliage portion, it is in a state of being narrowed toward the cutting blade 61. Therefore, as compared with the case where the cutting blade 61 is not narrowed, the foliage portion is likely to be densely packed with the cutting blade 61, and the cutting with the cutting blade 61 is likely to be smoothly performed.

In the embodiment, the foliage guide 46 is fixedly supported by the extraction device 21, but the present invention is not limited to this. For example, the foliage guide 46 can be brought close to and separated from the transport region 44a, and the inclination angle in the front-rear direction can be adjusted. By doing so, it is possible to appropriately guide the foliage according to the type and growth condition of the crop.

Further, in the embodiment, the foliage guide 46 arranged on the right side is arranged so that the left end does not straddle the transport region 44a. That is, although it is inclined with respect to the transport region 44a, it is arranged as close to parallel as possible. If the inclination angle is large, the force that the foliage portion of the crop receives from the foliage guide 46 increases with the transportation, and the foliage portion may be broken or cut. If the foliage is broken, there is a problem that it becomes difficult to cut with the cutting blade 61. Therefore, in the embodiment in which the foliage guides 46 are arranged as close to parallel as possible, it is easier to cut the foliage portion with the cutting blade 61 as compared with the case where the inclination angle is large.

In order to reduce the force applied to the foliage of the crop, for example, the foliage guide 46 can guide the foliage like a leaf spring-like metal body having elasticity in the width direction or hard rubber, and has cushioning performance. It is also possible to have a configuration having.

FIG. 8 is an explanatory diagram of another embodiment of the embodiment, FIG. 8A is an explanatory diagram of a configuration in which the foliage guide is vibrated, and FIG. 8B is an explanatory diagram of a configuration in which the cutting blade is vibrated.

In FIG. 8A, in another embodiment of the embodiment, a rotary roller 101 that comes into contact with the pinch transport belt 44 is arranged below the pinch transport belt 44. An eccentric cam 102 as an example of a vibrating member is supported coaxially with the rotating roller 101. The eccentric cam 102 is installed so as to periodically contact and separate from the foliage guide 46. Therefore, the foliage guide 46 generates vibration (slight vibration) with the rotation of the sandwiching and transporting belt 44. When the foliage guide 46 vibrates slightly, the foliage portion of the crop in contact with the foliage guide 46 can be expected to be sent to the downstream side in the form of peristaltic movement. Further, even if the foliage portion is entangled with the foliage guide 46, it can be removed by vibration. Therefore, it is possible to prevent the cutting from being delayed due to the entanglement of the foliage portion and disturbing the timing at which the crop from which the foliage portion has been cut returns to the field.

The vibration to the foliage guide 46 exemplifies the configuration obtained from the sandwiching and transporting belt 44, but is not limited to this. For example, a motor for generating micro-vibration may be provided separately, or a drive may be obtained from the mold alignment belt 57, or any other form may be used. Further, the member that comes into contact with the foliage guide 46 is not limited to the eccentric cam 102, and may have an arbitrary configuration (vibration member) such as a crank shaft that can be subjected to vibration.

Further, in FIG. 8B, it is possible to add not only the configuration for vibrating the foliage guide 46 but also the configuration for vibrating the cutting blade 61 by using the rotary roller 106 and the eccentric cam 107. By slightly vibrating the cutting blade 61, the cutability can be improved as compared with the case where the cutting blade 61 is not slightly vibrated.

The vibration direction of the cutting blade 61 is preferably set to reciprocate along the left-right direction in which the cutting blade 61 extends. In FIG. 8B, the rotation axis of the rotary roller 106 and the rotation axis of the eccentric cam 107 are changed by 90 ° via the bevel gears 108 and 109, and the eccentric cam 107 is brought into contact with the left end of the cutting blade 61 to vibrate in the left-right direction. It is also possible.

Although the configuration in which the vibration to the cutting blade 61 is obtained from the sandwiching and conveying belt 44 is exemplified, the configuration is not limited to this, and a configuration in which the vibration is obtained from the mold alignment belt 57 is also possible.

Further, in the extraction device 21 of the crop extraction machine 1 of the embodiment, the upper surface of the sandwiching transfer belt 44 is covered with the protective cover 111. The protective cover 111 has a front cover 111a and a rear cover 111b. In the embodiment, the boundary between the front cover 111a and the rear cover 111b is set with reference to the front end portion of the raising support arm 22. Therefore, when the front cover 111a and the rear cover 111b are attached and detached, only the covers 111a and 111b can be attached and detached without removing the raising support arm 22 from the frame of the pulling device 21. Therefore, workability is improved.

When the front cover 111a is removed, it can be removed by raising the raising device 26 upward by the raising adjustment device 72 and then pulling it forward.

Therefore, by removing the covers 111a and 111b, the front part (the range where cutting is performed by the cutting blade 61 while aligning the molds) and the rear part (the foliage part after cutting) of the sandwiching transport belt 44 are sandwiched. It is also possible to individually adjust the pinching force of the pinching transport belt 44 according to the transport range).

In addition, when the protective cover 111 is connected, it is necessary to remove the long protective cover 111 when replacing parts, removing or cleaning the clogged foliage, etc., which reduces work efficiency. It puts a burden on the worker. On the other hand, in the configuration of the embodiment in which the covers 111a and 111b are divided, it is not necessary to attach and detach the long covers in the front and rear, the work efficiency is improved, and the labor of the operator can be reduced.

In the embodiment, the connecting portion 71 connecting the upper portions of the left and right raising support arms 22 can be formed in an inverted U shape, that is, an arch shape. In this case, the connecting portion 71 does not come into contact with the foliage portion transported by the sandwiching transport belt 44, and does not interfere with the transport of the foliage portion. Further, as compared with the case where the connecting portion 71 is not connected, the whole can be reinforced by connecting the raising support arms 22 to each other.

The connecting portion 71 can be easily removed when it is necessary to remove the connecting portion 71 by fixing the connecting portion 71 to the left and right raising support arms 22 by, for example, bolting from above. Is possible.

9A and 9B are explanatory views of a stand in the crop extraction machine of the embodiment, FIG. 9A is an explanatory diagram of a removed state, FIG. 9B is an explanatory diagram of a crop fall suppression state, and FIG. 9C is an explanatory diagram of a stored state. ..

In FIG. 9, in the crop extraction machine 1 of the embodiment, the stand support member 121 is supported on the front surface of the rear wheel transmission case 6. The stand support member 121 of the embodiment is formed in a semi-cylindrical shape with an open front. The stand support member 121 is formed with a support hole 121a at the rear portion.

The stand 122 is detachably supported on the stand support member 121. The stand 122 has a rod-shaped long arm portion 123 and a short arm portion 124 extending in the vertical direction from one end of the long arm portion 123. Therefore, the stand 122 of the embodiment is formed in a substantially L shape. A first mounting hole 123a is formed at the tip of the long arm portion 123. A second mounting hole 123b is formed at the base end portion of the long arm portion 123. A third mounting hole 124a is formed at the tip of the short arm portion 124. The first mounting hole 123a and the second mounting hole 123b and the third mounting hole 124a intersect at 90 ° in the directions penetrating the arm portions 123 and 124.

As shown in FIG. 9A, in a state where the first mounting hole 123a and the support hole 121a are penetrated by the fastening member 126 and the stand 122 is supported by the stand support member 121, the short arm portion 124 can be grounded to the field scene. be. Therefore, the stand 122 functions as a leg that supports the crop extraction machine 1 in a stopped state. Therefore, for example, when adjusting the distance between the rear wheels 8 according to the width of the ridges in the field, the crop extraction machine 1 is held in an upright state by the stand 122, and the width of the rear wheel transmission case 6 and the rear wheels 8 is adjusted. It is also possible to adjust the position of the direction.

Further, as shown in FIG. 9B, when the crop is fastened to the support hole 121a through the third mounting hole 124a, even if a crop such as a radish that falls after cutting the foliage is about to fall during the crop extraction work, the long arm It is also possible to prevent the radish and the like from falling by using the part 123 as a guide.

In the embodiment, when the stand 122 is mounted in the third mounting hole 124a, the long arm portion 123 is set to be substantially parallel to the front-rear direction, but the present invention is not limited to this. .. By changing the penetrating direction of the third mounting hole 124a, the long arm portion 123 can be tilted to the right or left in the width direction.

In FIG. 9C, when the crop extraction machine 1 is fastened to the support hole 121a by the second mounting hole 123b, the stand 122 can be stored when the crop extraction machine 1 is put away in a warehouse or the like.

The stand support member 121 of the embodiment is formed in a semi-cylindrical shape with an open front, and the stand 122 can be pulled forward and attached / detached. The work of attaching and detaching the stand 122 is easier than in the case of a semi-cylindrical shape in which the front is closed, that is, in the case where the stand support member 121 is mounted on the rear wheel transmission case 6 in the reverse direction.

In the stand 122 of the embodiment, a case where three holes of the first mounting hole 123a to the third mounting hole 124a are formed is exemplified, but the present invention is not limited to this, and the holes are not limited to these, depending on the purpose and application. It is also possible to increase or decrease the number of.

10A is an explanatory diagram of an actuator of an embodiment, FIG. 10A is a schematic diagram, FIG. 10B is an explanatory diagram of an example of a shock absorbing unit, and FIG. 10C is an explanatory diagram of another example of the shock absorbing unit.

In FIG. 10, in the actuators 74, 84, 93 of the crop extraction machine 1 of the embodiment, the male screw portion 131 is provided at the tip end portion of each of the shafts 73a, 84b, 92a. A female threaded portion 132 is formed at the tip of the adjusted side 75, 17, 94, and the male threaded portion 131 is screw-fitted. Therefore, when the shafts 73a, 84b, 92a rotate, the adjusted sides 75, 17, and 94 are adjusted in the axial direction due to the screw fitting between the male screw portion 131 and the female screw portion 132. Therefore, the length of the actuators 74, 84, and 93 as a whole changes in the axial direction.

In FIG. 10A, in the actuators 74, 84, 93 of the embodiment, the retaining ring 133 is supported on each shaft 73a, 84b, 92a, and the retaining ring 134 is supported on the adjusted side 75, 17, 94. ing. Therefore, even if the handle portions 73, 83, and 92 are turned too much, the retaining ring 133 is caught on the retaining portion 134. Therefore, it is possible to prevent the male threaded portion 131 from falling off from the female threaded portion 132.

In FIG. 10A, it is also possible to provide a shock absorbing portion 136 in the middle of each of the shafts 73a, 84b, 92a. By providing the shock absorbing unit 136, it is possible to reduce the load on the wheels 8, 18 and the like during work from being applied to the traveling transmission 3 and the engine 4.

In FIG. 10B, as an example, a plurality of sets of shock absorbing portions 136 are installed, with dish-shaped springs 137 as an example of a load absorbing member facing each other in the middle of each shaft 73a, 84b, 92a. It can be configured. With this configuration, the axial impact of the shafts 73a, 84b, 92a can be absorbed by the elastic deformation of the central portion 137a of the dish-shaped spring 137 in the axial direction, and the shafts 73a, 84b, The rotation of 92a can be transmitted.

In FIG. 10C, as another example, the shock absorbing unit 136 is provided with a key 138a on one of the shafts 73a, 84b, 92a, a key groove 139a is formed on the other 139, and the shafts 73a, 84b, 92a are formed. It is also possible to mount a spring 140 as an example of the load absorbing member between the one 138 and the other 139. With this configuration, it is possible to absorb the impact of each of the shafts 73a, 84b, 92a in the axial direction and to transmit the rotation.

In the embodiment, the actuator 93 for adjusting the rear wheels is installed separately on the left and right, and the left and right rear wheels 8 can be adjusted independently. Therefore, it can be set according to the condition of the field or the road surface (the distance between the ridges, the height, etc.). Therefore, it is possible to prevent the crop pulling machine 1 from tilting with respect to the horizontal and pulling out the crop diagonally, causing problems such as the crop breaking.

Further, in each of the actuators 74, 84, 93, the number of dish-shaped springs 137, the magnitude of the elastic modulus, and the magnitude of the elastic modulus of the spring 140 can be arbitrarily changed according to the design, specifications, and the like. Therefore, the shock absorbing capacity can be adjusted by replacing the crop extraction machine 1 before shipping or at the time of maintenance and inspection.

Further, in the crop extraction machine 1 of the embodiment, it is also possible to detachably provide a cover covering the side of the traveling transmission 3, the extraction device 21, and the mold alignment device 51 on the outside of the main frame 2. By providing such a cover, it is possible to prevent an operator from accidentally putting his or her hand in the extraction device 21, the mold alignment device 51, or the like to cause an accident or the like. By attaching and detaching this cover, it is possible to maintain and clean the extraction device 21 and the mold alignment device 51, and to remove the foliage portion clogged inside.

Further, the configuration is not limited to the structure in which the entire cover can be attached and detached, and a lid and a door are provided at positions corresponding to the traveling transmission 3 of the cover so that the traveling transmission 3 can be maintained without attaching and detaching the entire cover. It is also possible to do.

11A and 11B are explanatory views when a loading platform is provided in the crop extraction machine of the embodiment, FIG. 11A is a schematic diagram, and FIG. 11B is an explanatory diagram of a moving mechanism of the loading platform.

In FIG. 11, a loading platform 151 is supported on the upper surface of the protective cover 111 on the left side of the extraction device 21. The crop extraction machine 1 of the embodiment is configured to be able to run with the harvested crops placed on the loading platform 151. Therefore, the worker can collect the crop while pulling out the crop, and the time and labor required for the crop harvesting work can be reduced.

Further, as compared with the case where the crop is directly placed on the upper surface of the extraction device 21 where the bolt or the like is protruding, by placing the crop on the loading platform 151 on the upper surface of the extraction device 21, damage to the harvested crop is reduced. To.

Further, the loading platform 151 of the embodiment is arranged on the left side with respect to the transport area 44a so as not to block the transport area 44a of the sandwiched transport belt 44. Therefore, it is prevented that the loading platform 151 interferes with the work of the extraction device 21.

Further, the front end (lower end) of the loading platform 151 is arranged corresponding to the upper end of the raising support arm 22. Therefore, even if the crop loaded on the loading platform 151 tries to move forward along the inclination of the loading platform 151 (inclination of the extraction device 21), the raising support arm 22 acts as a stopper and the movement of the crop is suppressed. Therefore, the number of parts can be reduced as compared with the case where the stopper is separately provided.

Further, the loading platform 151 of the embodiment supports a side plate 152 extending upward from the left end. Therefore, the crop is prevented from falling from the left side as compared with the case where the side plate 152 is not provided. The side plate 152 can be provided on the right side or on both sides.

Further, the loading platform 151 of the embodiment is formed in a mesh shape, and even if mud, dust, or the like is placed on the loading platform 151, it can be dropped from the mesh.

In FIG. 11B, the loading platform 151 of the embodiment has a fixed portion 151a and a movable portion 151b, and the movable portion 151b is supported so as to be movable in the left-right direction with respect to the fixed portion 151a. The side plate 152 is supported by the movable portion 151b. Therefore, by pulling out the movable portion 151b to the left, the area on which the crop can be loaded can be expanded.

Further, by storing the movable portion 151b on the right side after use, the width of the crop extraction machine 1 can be reduced.

Further, the side plate 152 can be configured to be movable between an upright state and an inverted state with a hinge or the like with respect to the loading platform 151. With such a configuration, when the crop is loaded on the loading platform 151, it can be prevented from falling in an upright state, and when the crop is unloaded from the loading platform 151, it can be in an inverted state to facilitate loading and unloading.

In addition, the configuration is not limited to opening and closing the entire side plate 152, and it is also possible to provide an opening in the side plate 152 and provide a lid or a door that can open and close the opening.

1 ... Crop extractor,
2 ... Airframe,
4 ... Drive device,
6 ... Traveling transmission case 8, 18 ... Wheels 21 ... Pulling device 22 ... Raising support member 26 ... Raising device 44a ... Transport area 46 ... Stem and leaf guide member 61 ... Cutting part 72 ... Raising adjustment device 91-94 ... Vehicle height adjustment device 102 ... Vibration member 111 ... Protective cover 137, 140 ... Load absorbing member 151 ... Loading platform

Claims (4)

A pulling device (21) for pulling out crops by transporting them to the rear and upward in the traveling direction as the machine (2) progresses, and a cutting part (21) for cutting the foliage of the crop being pulled out by the pulling device (21). In the crop extractor equipped with 61)
The cutting portion (61) arranged corresponding to the transport region (44a) in which the pulling device (21) transports the foliage portion, and the cutting portion (61) with respect to the transport direction of the pulling device (21). ), The foliage guide member (46) is provided to guide the portion of the foliage portion that is not sandwiched by the extraction device (21) toward the center of the transport region (44a).
A raising device (26) that raises the foliage of the crop and guides it to the pulling device (21) is provided on the front side of the machine body (2), and the raising support member (22) that supports the raising device (26) is pulled out. Provided on the upper side of the device (21) in the transport direction
A protective cover (111) that covers the extraction device (21) is detachably provided.
The protective cover (111) is located at the same position where the raising support member (22) is provided on the machine body (2), or at a position in front of the position where the raising support member (22) is provided on the machine body (2). ) Is a crop extraction machine that can be divided into front and back . The protective cover (111) is composed of a front cover (111a) and a rear cover (111b).
The crop extraction machine according to claim 1, wherein the front cover (111a) and the rear cover (111b) are independently and detachably configured . The cut portion (61) extends beyond the transport region (44a) from the base portion supported on one side in the width direction of the machine body (2) and from the one side in the width direction of the machine body (2). With a tip that extends to the other side
The crop extraction machine according to claim 1 or 2 , wherein the crop extraction device (21) is arranged in an inclined posture toward the center of the transportation region (44a) toward the downstream side in the transportation direction. The foliage guide member (46) is provided on both sides of the transport region (44a) in the width direction of the machine body and is inclined toward the center of the transport region (44a) as it goes downstream in the transport direction. The crop extraction machine according to any one of claims 1 to 3 , wherein the crop extraction machine is characterized in that.

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