JP7405129B2 - crop pulling machine - Google Patents

Description

The present invention relates to a crop pulling machine for pulling root crops such as radish from a field.

BACKGROUND ART A technology described in Patent Document 1 is known as a crop pulling machine that pulls root crops such as radish out of the field from the soil. The crop pulling machine described in Patent Document 1 uses a pulling device to raise the stems and leaves of a crop, grips the pulled stems and leaves with a pulling device and pulls them out of the field, and removes the stems and leaves using a cutting device disposed below the pulling device. By cutting off the harvested part of the crop, it is returned to the field, allowing workers to harvest the crop with light force.

Japanese Patent Application Publication No. 2016-214199

An object of the present invention is to provide a crop pulling machine that facilitates cutting with a cutting blade.

The above problems of the present invention are solved by the following solving means.

The invention according to claim 1 includes:
A clamping conveyance belt (44) constituting a pulling device (21) that conveys the crop backward and upward in the traveling direction as the machine body (2) advances, and pulls out the crop;
a shoulder aligning belt (57) disposed below the holding conveyor belt (44) and along the horizontal direction;
In a crop pulling machine equipped with a cutting blade (61) for cutting stems and leaves of crops,
The cutting blade (61) is provided below the approximate center of the clamping conveyance belt (44) in the front-rear direction and above the shoulder alignment belt (57),
The triggering device (26) for raising the foliage of the crop and guiding it to the pulling device (21) is provided on the front side of the machine body (2), and the triggering support member (22) supporting the triggering device (26) is provided. Provided on the upper side of the drawing device (21) in the conveying direction,
A protective cover (111) covering the extraction device (21) is removably provided,
The crop pulling machine is characterized in that the protective cover (111) is configured to be able to be divided into front and back parts based on the front end of the raising support member (22) .

The invention according to claim 2 includes:
The cutting blade (61) is formed as a plate-shaped fixed blade, and is arranged to be inclined from the front to the rear, and the rear end straddles the conveyance area (44a) of the pinch conveyor belt (44). A crop pulling machine according to claim 1, characterized in that it is arranged as follows.

The present invention makes it easier to cut stems and leaves with a cutting blade.

Furthermore, compared to the case where the protective cover (111) is not divided according to the position where the raising support member (22) is supported, it is not necessary to remove the raising support member (22) when removing the protective cover (111). This makes it easier to attach and detach the protective cover (111). Therefore, when the inside of the extraction device (21) is clogged with foliage, the work efficiency of removing the foliage 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 a crop pulling machine according to an embodiment. FIG. 2 is a front view of the crop pulling machine of the embodiment. FIG. 3 is a right side view of the crop pulling machine of the embodiment. FIG. 4 is a left side view of the crop pulling machine of the embodiment. FIG. 5 is a rear view of the crop pulling machine of the embodiment. FIG. 6 is an explanatory diagram of the main parts of the conveyance section of the crop pulling machine of the embodiment. FIG. 7 is an explanatory diagram of the main part of the pattern alignment part of the crop pulling machine of the embodiment, with FIG. 7A being a plan view and FIG. 7B being a side view. FIG. 8 is an explanatory diagram of another form of the embodiment, FIG. 8A is an explanatory diagram of a configuration for vibrating a foliage guide, and FIG. 8B is an explanatory diagram of a configuration for vibrating a cutting blade. FIG. 9 is an explanatory diagram of the stand in the crop pulling machine of the embodiment, FIG. 9A is an explanatory diagram of the removed state, FIG. 9B is an explanatory diagram of the crop fall prevention state, and FIG. 9C is an explanatory diagram of the stored state. . 10A and 10B are explanatory diagrams of an actuator according to an embodiment, FIG. 10A is a schematic diagram, FIG. 10B is an explanatory diagram of an example of a shock absorbing section, and FIG. 10C is an explanatory diagram of another example of a shock absorbing section. FIG. 11 is an explanatory diagram of a crop pulling machine according to an embodiment in which a loading platform is provided, FIG. 11A is a schematic diagram, and FIG. 11B is an explanatory diagram of a moving mechanism of the loading platform.

Embodiments of this invention will be described below.

FIG. 1 is a plan view of a crop pulling machine according to an embodiment.

FIG. 2 is a front view of the crop pulling machine of the embodiment.

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

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

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

A crop pulling machine 1 according to an embodiment of the present invention has a pair of left and right main frames 2 extending in the front-rear direction. The main frame 2 has a horizontal portion 2a and an inclined portion 2b extending obliquely upward from the rear end of the horizontal portion 2a. A travel transmission 3, which is an example of a drive device, is supported at the rear end of the inclined portion 2b. An engine 4, which is an example of a drive device and is an example of an internal combustion engine, is arranged behind the traveling transmission 3. Drive from an engine 4 is transmitted to the traveling transmission 3.

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

In the internal space of the inner case 6a, a telescopic travel transmission shaft 6b that transmits driving force from the travel transmission 3 is provided so as to be extendable and retractable in the left-right direction. The telescopic travel transmission shaft 6b is mounted so as to be telescopically extended in conjunction with the movement of the inner case 6a in the left-right direction.

Note that the left rear wheel transmission case 6L has a prismatic shape such as a square or hexagon, and the internal space also has the same shape. The inner case 6a has a prismatic outer shape similar to the rear wheel transmission case 6L, but the inner space is circular with a larger diameter than the telescoping transmission shaft 6b.

The left rear wheel transmission case 6L is rotatably provided to the traveling transmission 3, and when the left rear wheel transmission case 6L is rotated, the inner case 6a rotates together, 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 right rear wheel transmission case 6R is rotatably provided, and a traveling transmission shaft 6c is provided in a circular internal space. The outer shape of the right rear wheel transmission case 6R 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 at the lower portions of the left and right chain cases 7, respectively. Therefore, 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, 6R, and the chain case 7.

With the above configuration, by moving the inner case 6a 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. . This makes it possible to change the left and right spacing between the left and right rear wheels 8L and 8R according to the width of the ridge, and prevent the height of the machine from differing in the left and right directions. It can be kept horizontally and crops can be pulled out efficiently.

In addition, after adjusting the distance between the left and right rear wheels 8L and 8R, in order to lock the movement of the inner case 6a, a sliding lock pin 6d is installed at the outer end (left end) of the left rear wheel transmission case 6L. to restrict sliding of the inner case 6a. When sliding the inner case 6a, pull out this sliding lock pin 6d.

A rear cover 11 is supported on the top of the traveling transmission 3. A U-shaped handle 12 extending rearward is arranged inside the rear cover 11. Further, behind and above the engine 4, an operating lever 15, various operating buttons (not shown), display lamps, etc. are arranged.

A front wheel support section 16 extending rightward is supported at the front end of the right main frame 2. A front wheel support pipe 17 extending in the vertical direction is supported by 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 in the embodiment is formed into a hexagonal column shape, it can be formed into any shape such as a square pipe or a round bar shape. A front wheel 18 is rotatably supported at the lower end of the front wheel support pipe 17.

A pulling device 21 is supported at the front end of the main frame 2 . On the upper surface of the pulling device 21, a pair of left and right lifting support arms 22, which are examples of lifting support members, are supported. The raising support arm 22 is formed in an inverted U shape. A trigger arm 24 is supported at the front end of the trigger support arm 22 via a rotating shaft 23 . A triggering device 26 is supported at the front end of the triggering arm 24 .

The raising device 26 has a pair of left and right side raising parts 27 arranged at the rear and a front raising part 28 arranged at the front. Each horizontal triggering portion 27 is connected to the front end of the triggering arm 24. Each horizontal raising part 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 around the pulley. A plurality of raising paddles 27b are formed on the belt 27a and project outward. In the embodiment, the rotation direction is set so that the paddle 27b moves from below to above in the gap between the side triggering parts 27 as the pulley rotates.

The front raising part 28, like the side raising part 27, has a pair of upper and lower pulleys built therein, and a belt 28a is stretched around the pulleys. Further, a plurality of front raising paddles 28b are formed on the belt 28a. In the front raising part 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 that it moves from below to above on the rear side of the front raising part 28 as the pulley rotates.

In Embodiment 1, the drive from the engine 4 is input to the gearbox 31 in front of the traveling transmission 3, and the drive from the gearbox 31 causes the drive through the chain case 32, universal joint 33, etc. 27L, and the upper pulley is driven. The drive input to the left lateral triggering section 27L is transmitted to the pulley of the left front triggering section 28L through a shaft (not shown) that passes through the inside of the left connecting pipe 29a. The drive input to the left front raising part 28L is transmitted to the pulley of the right front raising part 28R through a shaft (not shown) passing through the inside of the front connecting pipe 29b. The drive input to the right front raising part 28R is transmitted to the pulley of the right side raising part 27R through a shaft (not shown) passing through the inside of the right connecting pipe 29c.

FIG. 6 is an explanatory diagram of the main parts of the conveyance section of the crop pulling 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 conveyance sections 41. Each conveyance section 41 has a plurality of pulleys 42. Rotation is transmitted to the rearmost pulley 42 from the gearbox 31 via a universal joint 43. A clamping conveyor belt 44 is stretched between each pulley 42 . The pinching conveyance belts 44 are arranged in pairs on the left and right, and are supported by pulleys 42 so that the pinching conveyance belts 44 are pressed against each other in the widthwise inner conveyance area 44a. The rotation direction of the clamping and conveying belt 44 of the embodiment is set so that it moves from the front to the rear in the conveying area 44a. Note that the conveyance area 44a is set at a position corresponding to the center position of the raising device 26 in the width direction.

Therefore, when the stems and leaves of crops such as radish and turnips are raised by the raising device 26 and enter the conveyance area 44a, they are clamped by the clamping conveyance belt 44, and as the clamping conveyance belt 44 rotates. , the crop whose stems and leaves are held can be moved backwards and upwards. Note that the rotational speed of the clamping and conveying belt 44 is set to a rotational speed corresponding to the traveling speed of the crop pulling machine 1. Therefore, when the crop is transported by the clamping conveyor belt 44, the forward traveling speed of the crop pulling machine 1 corresponds to the backward moving speed of the clamping conveyor belt 44, so that the position of the crop in the front-rear direction is does not change, rises on the spot, and is pulled out from the field.

FIG. 7 is an explanatory diagram of the main part of the pattern alignment part of the crop pulling machine of the embodiment, with FIG. 7A being a plan view and FIG. 7B being a side view.

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

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

The type alignment belts 57 are arranged in pairs on the left and right, similarly to the nipping and conveying belts 44. Note that, unlike the nipping and conveying belt 44, the type alignment belt 57 is disposed along the horizontal direction and does not raise the stem and leaf portion. Further, in the widthwise inner conveyance area 44a, the pattern alignment belts 57 are arranged with a gap between them. Therefore, when the stems and leaves pass through the gaps between the pattern alignment belts 57, the stems and leaves can move in the vertical direction. The upper surface of the harvested part (excluding stems and leaves) of the crop such as radish, which is lifted by the clamping and conveying belt 44, the so-called shoulder part of the radish, etc., comes into contact with the lower surface of the mold alignment belt 57, and the radish, etc. moves further upward. It is regulated not to do so.

A cutting blade 61, which is an example of a cutting section, is fixedly supported on the upper surface of the mold alignment device 51.

The cutting blade 61 is arranged on the left side in the width direction with respect to the conveyance area 44a. The cutting blade 61 is formed into a plate shape, and a blade portion 61a capable of cutting the stem and leaves is formed on the front surface. The cutting blade 61 of the embodiment is arranged so as to be inclined inward (to the right) in the width direction as it goes from the front to the rear. Note that the inner end (rear end, right end) of the cutting blade 61 is arranged on the right side of the conveyance area 44a. Therefore, the cutting blade 61 is arranged so as to straddle the transport area 44a.

(Height adjustment mechanism of the trigger part)
A connecting portion 71 that connects the left and right raising support arms 22 is supported at 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 located at the rear. The handle portion 73 is rotatably supported around a rotating shaft 73a extending along the direction in which the extraction device 21 is inclined. An actuator 74 for adjusting the raising height is supported at the front end of the handle portion 73. The actuator 74 is configured such that its length along the axial direction of the rotating shaft 73a can be expanded and contracted as the handle portion 73 rotates.

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

(Front wheel height adjustment mechanism)
A bracket 81 is supported on the right front upper surface of the handle 12. A rear end of a transmission shaft 82 extending forward is rotatably supported by the bracket 81 . A handle portion 83 for adjusting the height of the front wheel 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 an actuator 84 for adjusting the height of the front wheel. The actuator 84 has a housing 84a extending on an extension of the front wheel support pipe 17. The housing 84a of the embodiment is formed in a hexagonal cylindrical shape like the front wheel support pipe 17, and the upper end of the front wheel support pipe 17 is accommodated in the lower part 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 unrotatable in the circumferential direction.

An adjustment shaft 84b extending along an extension of the front wheel support pipe 17 is rotatably supported inside the housing 84a. Inside the upper end of the housing 84a are a first bevel gear 84c supported by the transmission shaft 82, and a second bevel gear 84d meshing with the first bevel gear 84c and supported by the upper end of the adjustment shaft 84b. is accommodated. A male threaded portion (described later) is formed at the lower end of the adjustment shaft 84b, and is threaded into 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 rotates, and the adjustment shaft 84b rotates via the bevel gears 84c and 84d. When the adjustment shaft 84b rotates, the threaded portion causes the front wheel support pipe 17 to move in the axial direction (vertical direction). Therefore, by operating the handle portion 83, the length of the actuator 84 can be expanded or contracted, and the height of the front wheel 18 can be adjusted.

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

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

Therefore, when the operator manually rotates the handle portion 92 for adjusting the rear wheel, the actuator 93 expands and contracts to move the rear wheel adjusting arm 94 in the front-rear direction. As a result, the corresponding side of the left and right rear wheel transmission cases 6L, 6R 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 is rotated in the vertical direction. let

Therefore, the rear wheel 8 moves up and down relative to the support member 91 for rear wheel adjustment, the traveling transmission 3, the main frame 2, etc., and the height of the rear wheel is adjusted. In the embodiment, a handle portion 92, an actuator 93 for rear wheel adjustment, and a rear wheel adjustment arm 94 are installed on both left and right sides, so that the heights of the left and right rear wheels 8 can be adjusted individually.

The members denoted by the reference numerals 91 to 94 constitute rear wheel height adjustment mechanisms 91 to 94 as an example of a vehicle height adjustment device.

(Effect of Example)
In the crop pulling machine 1 of the embodiment having the above configuration, when harvesting crops such as radishes and turnips, when the crop pulling machine 1 is moved along the ridges, the foliage is raised by the raising device 26. The raised stems and leaves are pinched by the clamping and conveying belt 44 of the pulling device 21 and pulled upward as the crop pulling machine 1 advances. In addition, in the crop pulling machine 1 of the embodiment, the radish etc. are not completely pulled out, but are pulled out part way from a state where the roots are firmly spread out in the field. Then, when the stem and leaves are cut by the cutting blade 61, the harvested part of the crop falls and is accommodated in the hole where it was planted in the field. Therefore, after passing through the crop pulling machine 1, the crops stand in the field, partially pulled out, and can be picked up by an operator with a light force.

In the crop pulling machine 1 of the embodiment, the stem and leaf guide 46 is arranged in front of the cutting blade 61. Therefore, the stems and leaves moving rearward on the clamping and conveying belt 44 come into contact with the stems and leaves guide 46 and are guided before being cut by the cutting blade 61. The stems and leaves held by the holding and conveying belt 44 rise along the slope of the holding and conveying belt 44 until the shoulder of the crop comes into contact with the lower surface of the forming belt 57. When they come into contact, the stems and leaves held by the holding and conveying belt 44 are pulled downward. Therefore, a portion of the foliage (for example, a short foliage) falls off from the nipping and conveying belt 44, and in the space between the nipping and conveying belt 44 and the alignment belt 57, the foliage spreads in the front, back, left and right directions due to gravity. It may be stored away.

When the foliage spreads, the foliage becomes easily caught by the cutting blade 61, making it difficult to cut the foliage smoothly. If the cutting blade 61 does not cut smoothly, the time when the harvested part falls will be delayed, and the harvested part will fall out of the hole in the field, causing the crop to fall, making collection work troublesome, and causing the lower part of the crop to fall. If the upper part remaining in the hole moves with the crop pulling machine 1, there is a risk that the crop may break or be damaged.

On the other hand, in the crop pulling machine 1 of the embodiment, the stem and leaf guide 46 guides the stem and leaf portion toward the center of the conveyance area 44a on the upstream side of the cutting blade 61. Therefore, compared to a configuration that does not include the stem and leaf guide 46, the expanded stem and leaf portions are more likely to be smoothly cut by the cutting blade 61 in a densely packed state. Therefore, the timing at which the crops fall onto the field is easily stabilized, and the occurrence of problems such as crops falling over or breaking when returned to the field is reduced.

In addition, the foliage guide 46 of the embodiment is arranged between the clamping and conveying belt 44 and the cutting blade 61, and contacts only the foliage of the crop to bring the foliage together (make it dense). can.

Further, in the embodiment, the stem and leaf guide 46 is arranged on the right side, and the cutting blade 61 is arranged on the left side. Therefore, the stems and leaves that spread to the left can be cut together with the cutting blade 61, and the stems and leaves that spread to the right can be guided to the cutting blade 61 by the stem and leaf guide 46 and cut. Therefore, compared to the case where the leaf guides 46 are provided on both sides, the number of parts can be reduced and the manufacturing cost can be reduced.

Note that by arranging the stem and leaf guides 46 on both sides of the transport area 44a, it is also possible to configure a structure in which the left side of the stem and leaf portion is guided by the leaf and leaf guides.

Furthermore, in the embodiment, the leaf guide 46 is inclined toward the center of the conveyance area 44a as it goes rearward. Therefore, from the point of view of the guided stem and leaf portion, it is in a state of narrowing toward the cutting blade 61. Therefore, compared to the case where the stem is not narrowed, the cutting blade 61 tends to gather the stems and leaves more closely, and the cutting by the cutting blade 61 tends to cut smoothly.

In the embodiment, the leaf guide 46 is fixedly supported by the extraction device 21, but the present invention is not limited thereto. For example, it is also possible to move the foliage guide 46 closer to and away from the transport area 44a, or to adjust the inclination angle in the front-rear direction. By doing so, it is possible to appropriately guide the stems and leaves depending on the type and growth conditions of the crop.

Further, in the embodiment, the stem and leaf guide 46 arranged on the right side is arranged so that its left end does not straddle the conveyance area 44a. That is, although it is inclined, it is arranged as close to parallel to the transport area 44a as possible. If the angle of inclination becomes large, the force that the foliage of the crop receives from the foliage guide 46 during transportation will increase, and the foliage may break or break. If the stems and leaves break, 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 portions with the cutting blade 61 than when the inclination angle is large.

In order to reduce the force exerted on the foliage of the crop, the foliage guide 46 should be made of a material that can guide the foliage and has a cushioning performance, such as a plate spring-like metal body having elasticity in the width direction or hard rubber. It is also possible to have a configuration having the following.

FIG. 8 is an explanatory diagram of another form of the embodiment, FIG. 8A is an explanatory diagram of a configuration for vibrating a foliage guide, and FIG. 8B is an explanatory diagram of a configuration for vibrating a cutting blade.

In FIG. 8A, in another embodiment, a rotating roller 101 that contacts the nipping conveyance belt 44 is arranged below the nipping conveyance belt 44. In FIG. An eccentric cam 102, which is an example of a vibrating member, is supported coaxially with the rotating roller 101. The eccentric cam 102 is installed so as to periodically come into contact with and separate from the foliage guide 46. Therefore, vibrations (fine vibrations) are generated in the leaf guide 46 as the holding and conveying belt 44 rotates. When the foliage guide 46 vibrates slightly, it can be expected that the foliage of the crop that comes into contact with the foliage guide 46 will be sent downstream in a manner similar to peristaltic motion. Further, even if the stems and leaves become entangled with the stems and leaves guide 46, they can be removed by vibration. Therefore, it is possible to prevent a delay in cutting due to entanglement of the stems and leaves, which would disturb the timing at which the crops whose stems and leaves have been cut return to the field.

In addition, although the vibration to the leaf guide 46 is obtained from the clamping conveyance belt 44 as an example, it is not limited to this. For example, it is possible to take any form such as providing a separate motor for generating microvibration or obtaining drive from the pattern alignment belt 57. Furthermore, the member that contacts the foliage guide 46 is not limited to the eccentric cam 102, and may be any structure (vibrating member) capable of imparting vibration, such as a crankshaft.

Moreover, in FIG. 8B, it is also possible to add not only a configuration in which the foliage guide 46 is vibrated, but also a configuration in which the cutting blade 61 is vibrated using a rotating roller 106 or an eccentric cam 107. Note that by slightly vibrating the cutting blade 61, cutting performance can be improved compared to a case where the cutting blade 61 is not vibrated slightly.

Note that the vibration direction of the cutting blade 61 is desirably set to reciprocate along the left-right direction, which is the direction in which the cutting blade 61 extends. In FIG. 8B, the rotation axis of the rotating roller 106 and the rotation axis of the eccentric cam 107 are changed by 90 degrees through 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 vibration to the cutting blade 61 is obtained from the nipping and conveying belt 44 as an example, the present invention is not limited to this, and a structure may be adopted in which the vibration to the cutting blade 61 is obtained from the pattern alignment belt 57.

Further, in the pulling device 21 of the crop pulling machine 1 according to the embodiment, the upper surface of the nipping conveyor belt 44 is covered with a 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 the front end of the raising support arm 22 as a reference. Therefore, when attaching and detaching the front cover 111a and the rear cover 111b, it is possible to attach and detach only each cover 111a and 111b without removing the raising support arm 22 from the frame of the extraction device 21. Therefore, work efficiency is improved.

In addition, when removing the front cover 111a, it can be removed by raising the raising device 26 upward using the raising adjusting device 72 and then pulling it out forward.

Therefore, by removing each cover 111a, 111b, the front part (the area where cutting is performed with the cutting blade 61 while aligning the shapes) and the rear part (the area where cutting is performed by the cutting blade 61 while aligning the shapes) and the rear part (the area where the cut stems and leaves are held and It is also possible to individually adjust the clamping force of the clamping conveyance belt 44 according to the conveyance range) and the conveyance range.

In addition, if the protective covers 111 are connected, it is necessary to remove the long protective covers 111 when replacing parts, removing clogged leaves, etc., and reducing work efficiency. This places a burden on workers. On the other hand, in the configuration of the embodiment in which the covers 111a and 111b are divided, there is no need to attach and detach long covers from the front and back, which improves work efficiency and reduces the labor of the operator.

In the embodiment, the connecting portion 71 that connects the upper portions of the left and right raising support arms 22 can be formed in an inverted U shape, that is, a so-called arch shape. In this case, the connecting portion 71 does not come into contact with the stems and leaves conveyed by the nipping conveyance belt 44, and does not interfere with the conveyance of the stems and leaves. Furthermore, by connecting the raising support arms 22, the entire structure can be reinforced compared to the case where they are not connected by the connecting portion 71.

Note that the connecting portion 71 is fixed to the left and right raising support arms 22 by, for example, fastening with bolts from above, so that when it is necessary to remove the connecting portion 71, it can be easily removed. is possible.

FIG. 9 is an explanatory diagram of the stand in the crop pulling machine of the embodiment, FIG. 9A is an explanatory diagram of the removed state, FIG. 9B is an explanatory diagram of the crop fall prevention state, and FIG. 9C is an explanatory diagram of the stored state. .

In FIG. 9, in the crop pulling machine 1 of the embodiment, a 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. A support hole 121a is formed in the rear part of the stand support member 121.

A stand 122 is removably supported by the stand support member 121 . The stand 122 has a rod-shaped long arm portion 123 and a short arm portion 124 extending vertically from one end of the long arm portion 123. Therefore, the stand 122 of the embodiment is formed into 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 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, the second mounting hole 123b, and the third mounting hole 124a intersect with each other by 90° in the direction in which they pass through each arm portion 123, 124.

As shown in FIG. 9A, when the stand 122 is supported by the stand support member 121 with the fastening member 126 passing through the first mounting hole 123a and the support hole 121a, the short arm portion 124 can be grounded on the field. be. Therefore, the stand 122 functions as a leg that supports the crop pulling 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, etc., the crop pulling machine 1 is held in an upright position on 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.

In addition, as shown in FIG. 9B, when the third attachment hole 124a is fastened to the support hole 121a, even if a crop such as a radish that falls after cutting the stems and leaves is about to fall during the crop pulling operation, the long arm It is also possible for the portion 123 to act as a guide to prevent the radish or the like from falling over.

In the embodiment, when the stand 122 is attached to the third attachment hole 124a, the long arm portion 123 is set to be approximately 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, it is also possible to incline the long arm portion 123 to the right or left side in the width direction.

In FIG. 9C, when the second mounting hole 123b is fastened to the support hole 121a, the stand 122 can be kept in a stored state when the crop pulling 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 attached and detached by pulling it forward. The work of attaching and detaching the stand 122 is easier than when the stand support member 121 has a semi-cylindrical shape with the front closed, that is, when the stand support member 121 is attached to the rear wheel transmission case 6 in the reverse direction.

Note that although the stand 122 of the embodiment has three holes, the first mounting hole 123a to the third mounting hole 124a, the present invention is not limited to this, and the holes may be formed depending on the purpose and use. It is also possible to increase or decrease the number of .

10A and 10B are explanatory diagrams of an actuator according to an embodiment, FIG. 10A is a schematic diagram, FIG. 10B is an explanatory diagram of an example of a shock absorbing section, and FIG. 10C is an explanatory diagram of another example of a shock absorbing section.

In FIG. 10, in the actuators 74, 84, 93 of the crop pulling machine 1 of the embodiment, a male threaded portion 131 is provided at the tip of each shaft 73a, 84b, 92a. A female threaded portion 132 is formed at the tip of the adjusted side 75, 17, 94, and a male threaded portion 131 is screwed into the female threaded portion 132. Therefore, when each shaft 73a, 84b, 92a rotates, the side to be adjusted 75, 17, 94 moves in the axial direction due to the screw fitting between the male threaded portion 131 and the female threaded portion 132, and is adjusted. Therefore, the length of the actuators 74, 84, 93 in the axial direction changes as a whole.

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

In FIG. 10A, it is also possible to provide a shock absorbing portion 136 in the middle of each shaft 73a, 84b, 92a. By providing the shock absorbing portion 136, the load of the wheels 8, 18, etc. during work can be reduced on the traveling transmission 3, engine 4, etc.

In FIG. 10B, the shock absorbing section 136 includes, for example, a plurality of sets of disk-shaped springs 137, each of which is an example of a load absorbing member, placed facing each other in the middle of each of the shafts 73a, 84b, and 92a. It is possible to configure With this configuration, the impact in the axial direction of each shaft 73a, 84b, 92a can be absorbed by the center portion 137a of the disc-shaped spring 137 being elastically deformed in the axial direction, and the impact on each shaft 73a, 84b, 92a can be absorbed by The rotation of 92a can be transmitted.

In FIG. 10C, as another example, the shock absorbing part 136 is provided with a key 138a on one 138 of each shaft 73a, 84b, 92a, and a key groove 139a on the other 139, It is also possible to provide a configuration in which a spring 140, which is an example of a load absorbing member, is mounted between one side 138 and the other side 139. With this configuration, impact in the axial direction of each shaft 73a, 84b, and 92a can be absorbed, and rotation can be transmitted.

In the embodiment, actuators 93 for rear wheel adjustment are installed separately on the left and right, making it possible to adjust the left and right rear wheels 8 independently. Therefore, it can be set according to the conditions of the field and road surface (the spacing and height of the ridges, etc.). Therefore, it is possible to prevent the crop pulling machine 1 from being tilted with respect to the horizontal and causing problems such as crop breakage due to the crop being pulled diagonally when pulling the crop.

Further, in each actuator 74, 84, 93, the number of disc-shaped springs 137, the magnitude of the elastic coefficient, and the magnitude of the elastic coefficient of the spring 140 can be arbitrarily changed according to the design, specifications, etc. Therefore, the shock absorption capacity can be adjusted by replacing the crop pulling machine 1 before shipment or during maintenance and inspection.

Furthermore, in the crop pulling machine 1 of the embodiment, it is also possible to removably provide a cover that covers the sides of the traveling transmission 3, the pulling device 21, and the type aligning device 51 on the outside of the main frame 2. By providing such a cover, it is possible to prevent an accident from occurring due to an operator accidentally touching the drawing device 21, the mold aligning device 51, or the like. By attaching and detaching this cover, it is possible to perform maintenance, inspection and cleaning of the extracting device 21 and the mold aligning device 51, and to remove stems and leaves stuck inside.

In addition, the structure is not limited to a structure in which the entire cover is removable, but a lid or a door may be provided on the cover at a position corresponding to the driving transmission 3, so that maintenance of the driving transmission 3 can be performed without removing or attaching the entire cover. It is also possible to do so.

FIG. 11 is an explanatory diagram of a crop pulling machine according to an embodiment in which a loading platform is provided, 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 pulling machine 1 of the embodiment is configured to be able to travel with harvested crops loaded on a loading platform 151. Therefore, the worker can perform the harvesting work of the crops while performing the pulling work, and the time and labor required for the harvesting work of the crops can be reduced.

In addition, compared to the case where crops are directly placed on the top surface of the extraction device 21 where bolts and the like protrude, placing the crops on the loading platform 151 on the top surface of the extraction device 21 reduces damage to the harvested crops. Ru.

Further, the loading table 151 of the embodiment is arranged on the left side with respect to the conveyance area 44a so as not to block the conveyance area 44a of the nipping conveyance belt 44. Therefore, the loading platform 151 is prevented from interfering with the work of the extraction device 21.

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

Further, the loading table 151 of the embodiment supports a side plate 152 extending upward from the left end. Therefore, compared to the case where the side plate 152 is not provided, crops are prevented from falling from the left side. Note that the side plate 152 may be provided on the right side, or may be provided on both sides.

Furthermore, the loading platform 151 of the embodiment is formed in a mesh shape, so that even if mud, dirt, etc. are placed on the loading platform 151, it can be dropped through the mesh.

In FIG. 11B, the loading table 151 of the embodiment has a fixed part 151a and a movable part 151b, and the movable part 151b is supported so as to be movable in the left-right direction with respect to the fixed part 151a. Note that 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 crops can be loaded can be expanded.

Moreover, by storing the movable part 151b to the right after use, the body width of the crop pulling machine 1 can be reduced.

Further, the side plate 152 can be configured to be movable between an upright state and a collapsed state with a hinge or the like with respect to the loading platform 151. With this configuration, when the crops are loaded onto the loading platform 151, the crops are placed in an upright position to prevent them from falling, and when the crops are unloaded from the loading platform 151, the crops are placed in the lying position to facilitate loading and unloading.

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

1...crop pulling machine,
2...Airframe,
4... Drive device,
6... Traveling transmission case 8, 18... Wheel 21... Pulling device 22... Raising support member 26... Raising device 44a... Conveying area 46... Leaf guide member 61... Cutting section 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 (2)

A clamping conveyance belt (44) constituting a pulling device (21) that conveys the crop backward and upward in the traveling direction as the machine body (2) advances, and pulls out the crop;
a shoulder aligning belt (57) disposed below the holding conveyor belt (44) and along the horizontal direction;
In a crop pulling machine equipped with a cutting blade (61) for cutting stems and leaves of crops,
The cutting blade (61) is provided below the approximate center of the clamping conveyance belt (44) in the front-rear direction and above the shoulder alignment belt (57),
The triggering device (26) for raising the foliage of the crop and guiding it to the pulling device (21) is provided on the front side of the machine body (2), and the triggering support member (22) supporting the triggering device (26) is provided. Provided on the upper side of the drawing device (21) in the conveying direction,
A protective cover (111) covering the extraction device (21) is removably provided,
A crop pulling machine characterized in that the protective cover (111) is configured to be able to be divided into front and back parts based on the front end of the raising support member (22) . The cutting blade (61) is formed as a plate-shaped fixed blade, and is arranged to be inclined from the front to the rear, and the rear end straddles the conveyance area (44a) of the pinch conveyor belt (44). A crop pulling machine according to claim 1, characterized in that it is arranged as follows.