JP6969593B2 - Porting machine - Google Patents

Description

The present invention relates to a transplant machine such as a transplant machine.

A transplanting machine equipped with a planting mechanism having a planting hopper corresponding to each of the four planting strips and a suppression mechanism having a suppression device corresponding to each of the four planting hoppers is known (Patent Document 1). reference).

Japanese Unexamined Patent Publication No. 2016-029892

Regarding the above-mentioned transplanting machine, it is necessary to rotate the suppression mechanism upward during turning or non-working driving to prevent it from being worn by touching the ground and becoming running resistance and deteriorating the running performance. Yes, the suppression mechanism is raised to a predetermined height in conjunction with the rise in vehicle height.

However, in order to raise each of the four suppression mechanisms, it is necessary to increase the number of components and arrange the components so as not to interfere with each other and the components of other mechanisms linked to the increase. Therefore, there is a problem that the maintainability is low and the weight of the machine is increased due to the complicated mechanism.

It is an object of the present invention to provide a transplanting machine in which the configuration of the interlocking ascending mechanism of the suppression mechanism interlocked with the vehicle height increase is simplified in order to overcome the above-mentioned problems.

The invention of claim 1 is around a plurality of planting devices (41a, 41b, 41c, 41d) for planting seedlings in a field and the seedlings planted by the plurality of planting devices (41a, 41b, 41c, 41d). In a transplanting machine provided with a suppression device (100a, 100b, 100c, 100d) for suppressing soil and an elevating member (300) for moving the vehicle height up and down on a vehicle body (10), the plurality of suppression devices (100a, 100b). , 100c, among 100d), an outer suppression device left and right are arranged on the body outside (100a, 100d), or either of the upper side rotation of the inner suppression device left and right are arranged on the body inside (100b, 100c) The left and right outer suppression devices (100a, 100d) or the left and right inner suppression devices (100b, 100c) are configured to rotate upward in conjunction with the above, and the plurality of suppression devices (100a, 100b, 100c, 100d) detect. A horizontal maintenance mechanism is provided to bring the vehicle body (10) into a horizontal posture with respect to the field scene according to the unevenness of the field scene, and the horizontal maintenance mechanism is a rotatable left and right suppression rotation shaft (73, 73). The left and right outer suppression devices (100a, 100d) are provided on the outside of the machine body, and the left and right inner suppression devices (100b, 100c) are rotatably provided on the inside of the machine body rather than the left and right outer suppression devices (100a, 100d). At the same time, tilt detection arms (310, 310) that rotate in conjunction with the rotation of the left and right suppression rotation shafts (73, 73) are provided inside the machine body rather than the left and right inner suppression devices (100b, 100c). In addition to being provided, a transmission member (320, 320) for transmitting the rotation of the left and right inclination detection arms (310, 310) to move the vehicle height of the vehicle body (10) up and down is provided. It is a transplant machine.

According to the second aspect of the present invention, the left and right suppression rotation shafts (73, 73) are rotatably mounted on the outside of the machine body by interlocking the left and right outer suppression devices (100a, 100d). 73a, 73a) are formed respectively, and the left and right outer suppression devices (100a, 100d) are the outer mounting shaft portion (74, 74) to be mounted on the interlocking mounting portion (73a, 73a) and the outer mounting shaft portion. The left and right outer suppression support arms (75,75) attached to (74,74) and the outer suppression rotating bodies (80,80) attached to the left and right outer suppression support arms (75,75), respectively. The left and right inner suppression devices (100b, 100c) are configured to include an inner mounting shaft portion (86, 86) that is rotatably mounted on the interlocking mounting portion (73a, 73a) and the inner mounting shaft portion (86). , 86), the left and right inner suppression support arms (88,88) whose left and right width on the base side is narrower than the left and right width on the rear side of the machine from the base, and the left and right inner suppression support arms (88,88). The transplanting machine according to claim 1, wherein the transplanting machine is composed of an inner suppressing rotating body (80, 80) to be mounted on each of the above.

According to the third aspect of the present invention, the left and right outer sides support the outer support plates (81, 81) that support the left and right outer suppression rotating bodies (80, 80) in an inclined posture so as to approach each other toward the lower side of the machine body. Inner support plates (81, 81) provided on the suppression support arms (75, 75) to support the left and right inner suppression rotating bodies (80, 80) in an inclined posture so as to approach each other toward the lower side of the machine. Are provided on the left and right inner suppression support arms (88, 88), respectively, and the outer mounting member (81, 80) for mounting the outer suppression rotating body (80, 80) on the left and right outer support plates (81, 81). 81), and the inner mounting member (81,81) for mounting the inner suppression rotating body (80,80) to the left and right inner support plates (81,81) are the outer suppression rotating body (80,80). The transplanting machine according to claim 2, wherein the squeezing rotating body (80, 80) is arranged on the lower side of the machine body from the vertical center of the rotating body (80, 80).

According to the fourth aspect of the present invention, the outer suppression device (100a, 100d) is provided with an interlocking member (92, 92) that comes into contact with the inner suppression device (100b, 100c) and moves up and down when rotating upward. The transplant machine according to any one of claims 1 to 3 , wherein each of the devices (100a, 100d) is provided toward the inner suppression device (100b, 100c).

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In the first related invention related to claims 1 to 4, the plurality of planting devices (41a, 41b, 41c, 41d) are provided with a seedling supply device (42) for transporting and supplying seedlings. The planting devices (41a, 41b, 41c, 41d) are arranged according to the positions of the left and right outer suppression devices (100a, 100d) and the left and right inner suppression devices (100b, 100c). In the outer suppression device (100a, 100d) and the left and right inner suppression devices (100b, 100c), the seedlings supplied from the seedling supply device (42) are guided into the planting device (41a, 41b, 41c, 41d). Seedling guides (38a, 38b, 38c, 38d) are provided respectively, and the outer seedling guides (38a, 38d) provided on the planting device (41a, 41d) located outside in the left-right direction of the machine are longitudinal in the left-right direction of the machine. The inner seedling guides (38b, 38c) provided in the planting device (41b, 41c) located outside in the left-right direction of the machine as well as in the direction are arranged with the front-back direction of the machine as the longitudinal direction, and the inner seedling guide (the inner seedling guide). 38b, a ported device you characterized in that near the body front 38c) is positioned below the transport path of the seedling supply device (42).

According to the invention of claim 1, when raising the vehicle height of the vehicle body (10) before turning or the like, either the left and right outer suppression devices (100a, 100d) or the left and right inner suppression devices (100b, 100c) are moved upward. If it is configured to rotate, the other can be raised in conjunction with each other, so that it is not necessary to configure an upward rotation mechanism by the number of suppression devices (100a, 100b, 100c, 100d), and the configuration can be simplified and parts can be simplified. The points will be reduced.
Further, the left and right outer suppression devices (100a, 100d) rotate together with the left and right suppression rotation shafts (73, 73), so that the left and right inner suppression devices (100b, 100c) rotate due to the unevenness of the field. However, since the amount of rotation of the left and right tilt detection arms (310, 310) does not change, unnecessary horizontal maintenance of the vehicle body (10) is prevented, and the planting posture of the seedlings is prevented from being disturbed.
In addition, by providing the left and right tilt detection arms (310, 310) inside the fuselage rather than the left and right inner suppression devices (100b, 100c), the placement routes of the transmission members (320, 320) are concentrated near the center of the left and right sides of the fuselage. Can be made to.

According to the second aspect of the present invention, in addition to the effect of the first aspect of the present invention, the left and right suppression rotation shafts (73,73) are formed on the outer side of the machine body to form interlocking mounting portions (73a, 73a). The outer suppression devices (100a, 100d) are prevented from spinning when moving up and down due to the unevenness of the field, and the left-right inclination of the vehicle body (10) can be detected with high accuracy .

Further, by making the left and right width of the left and right inner suppression support arms (88,88) narrower than the left and right width of the rear side of the machine body from the base, the left and right inner suppression support arms (88,88) and the left and right It is possible to prevent the tilt detection arms (310, 310) from interfering with each other .

According to the invention of claim 3, in addition to the effect of the invention of claim 2, the attachment position of the outer attachment member 81, 81) and the inner attachment member (81, 81) is set to the outer suppression rotating body (80, 80). ) And the left and right of the adjacent outer suppression rotating body (80, 80) and the inner suppression rotating body (80, 80) by making the aircraft lower than the vertical center of the inner suppression rotating body (80, 80). Even if the distance is narrow, the outer mounting members (81b, 81b) and the inner mounting members (81, 81) are prevented from interfering with each other .

As a result, the outer mounting member (81,81) and the inner mounting member (81,81) can be easily attached and detached, and the work efficiency is improved .

According to the invention of claim 4, in addition to the effect of the invention of any one of claims 1 to 3 , the outer suppression device (100a, 100d) is provided with the interlocking member (92, 92), whereby the outer suppression device is provided. When (100a, 100d) is rotated upward, the inner suppression device (100b, 100c) can be rotated upward in conjunction with each other, so that a mechanism for upward rotation of the inner suppression device (100b, 100c) becomes unnecessary. ..

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According to the first related invention, in addition to the effects of the inventions of claims 1 to 4 , the longitudinal direction of the outer seedling guides (38a, 38b) of the planting device (41a, 41d) on the outer side of the machine is arranged as the left-right direction of the machine. As a result, the seedlings can be reliably guided to the planting device (41a, 411d) outside the machine body even if the drop timing of the seedlings dropped and supplied from the seedling supply device (42) is slightly different.

Further, the longitudinal direction of the inner seedling guide (38b, 38c) of the planting device (41b, 41c) inside the machine body is arranged as the front-back direction of the machine body, and the inner seedling guide (38b) is arranged below the transport path of the seedling supply device (42). , 38c), the planting device (41a, 41d) on the outside of the machine and the planting device (41b, 41c) on the inside of the machine are prevented from interfering with each other by facing the vicinity of the front side of the machine.

Left side view of the transplanter Floor plan of the transplanter Front view of the main part showing the four planting hoppers Side view of the main part showing the planting hopper Top view showing the four planting hoppers Rear view of the main part showing the suppression device of Article 4 Top view showing the four suppression devices Rear view of the main part showing the suppression device of Article 4 of another configuration example Side view of the main part showing the suppression device of Article 4 of another configuration example Top view showing the suppression device of Article 4 of another configuration example Enlarged view of the main part showing the rolling mechanism due to the height difference between the left and right suppression devices Enlarged view of the main part showing the rolling mechanism due to the height difference between the left and right suppression devices Schematic diagram of the main part showing the rolling mechanism due to the height difference between the left and right suppression devices (A) Front view of the main part showing the hopper mounting stay of the planting hopper for adjusting the line spacing, (b) Perspective view of the main part showing the hopper mounting stay of the planting hopper for adjusting the line spacing. (A) Front view of the main part showing the left and right planting hoppers set between the basic rows, (b) Front view of the main part showing the left and right planting hoppers set between the narrow rows, (c) Between the wide rows. Front view of the main part showing the set left and right planting hoppers Side view of the main part showing the planting device with different tilted postures of the left and right planting hoppers Side view of the main part showing the rolling mechanism by the height difference of the front side suppression device

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. This embodiment is an example of a transplanting machine for planting seedlings of crops such as onions and lettuce.

First, the configuration and operation of the transplanting machine according to the present embodiment will be specifically described with reference to FIGS. 1 and 2.

In FIGS. 1 and 2, a four-row planting transplanter is shown, and the planting mechanism 40 has four planting hoppers 41 in the left-right direction of the machine. The planting hopper 41 includes left and right outer planting hoppers 41a and 41d provided on both the left and right outer sides of the machine body, and left and right inner planting hoppers 41b and 41c provided between the left and right outer planting hoppers 41a and 41d. Consists of.

The transplant machine of the present embodiment is a so-called passenger-type transplant machine having not only a handle 13 for a walking worker but also a seat 14 on which the worker rides and a pair of left and right floors 15.

At the front of the vehicle body 10, an engine 20 and the like are arranged together with a pair of left and right driven front wheels 11. The driving force generated by the engine 20 is transmitted to the pair of left and right driving rear wheels 12 and the like via the pair of left and right traveling chain cases 21.
The operation unit 30 is a unit for a walking worker to perform a vehicle body running operation while walking behind the vehicle body 10.

The planting mechanism 40 has a planting hopper 41 corresponding to a plurality of planting rows, that is, left and right outer planting hoppers 41a and 41d, and left and right inner planting hoppers 41b and 41c, which are raised and lowered to plant seedlings. Is.

In the present application, the planting mechanism 40 is configured to raise and lower the outer planting hopper 41a and the inner planting hopper 41b on the left side of the machine body, and the outer planting hopper 41d and the inner planting hopper 41c on the right side of the machine body to plant seedlings. be.

The outer planting hopper 41a, the inner planting hopper 41b, the outer planting hopper 41d, and the inner planting hopper 41c are the first planting hopper 41a and the aircraft arranged on the outside of one of the left and right sides of the machine body in order to distinguish them from each other. It is called a second planting hopper 42b arranged inside one of the left and right sides, a third planting hopper 41c arranged inside the other left and right sides of the aircraft, and a fourth planting hopper 41d arranged outside the other left and right sides of the aircraft. You may.

The seedling supply table 42 has a plurality of seedling storage cups for accommodating seedlings introduced by the boarding worker, which are connected in a loop and are circulated.

At the rear of the vehicle body 10, four planting hoppers 41 for planting seedlings supplied by the seedling supply table 42, a suppression mechanism 50 for applying a suppression load to the soil around the planted seedlings, and the like are mounted on the drive rear wheel 12. Is placed with.

As shown in FIGS. 3 to 5, the first to fourth planting hoppers 41a, 41b, 41c, 41d have a pair of left and right beak-shaped hopper configurations 39, which open and close on the lower side with the upper side as a rotation fulcrum. It is composed of 39 and a seedling guide 38 that guides the seedlings that are dropped and supplied from the seedling supply table 42 to the inside of the left and right hopper constituents 39, 39.

The seedling guide 38 has an elliptical shape in a plan view, and the outer seedling guides 38a and 38d provided above the outer planting hoppers 41a and 41d located on the left and right outer sides of the machine are mounted in a posture in which the longitudinal direction faces the left and right direction of the machine. On the other hand, the inner seedling guides 38b and 38c provided above the inner planting hoppers 41b and 41c located on the left and right inner sides of the machine are mounted in a posture in which the longitudinal direction faces the front and rear direction of the machine. Further, the left and right inner seedling guides 38b and 38c are arranged so that the front portion of the machine body faces the transport path below the transport path in the left-right direction of the seedling supply table 42.

As shown in FIGS. 1 and 2, in the seedling supply table 42, a plurality of seedling transport cups 42a ... The seedlings are dropped and supplied at a predetermined position, that is, above the first to fourth planting hoppers 41a, 41b, 41c, 41d. The rotation pitch of the plurality of seedling transport cups 42a ... Is changed by this circumferential drive according to the switching operation (not shown).

In this case, when the stocks are switched, the position where the seedlings are dropped and supplied to the first and fourth planting hoppers 41a and 41d located near the boundary between the linear transport portion and the arc transport portion of the seedling supply table 42 is the machine body. It changes significantly in the left-right direction, and the positions where the seedlings are dropped and supplied to the second and third planting hoppers 41b and 41c located in the linear transport portion of the seedling supply table 42 are almost unchanged.

By directing the longitudinal direction of the left and right outer seedling guides 38a and 38d to the left and right directions of the machine, even if the rotation pitch of the seedling supply table 42 is changed and the drop supply position of the seedlings fluctuates greatly, the seedlings are left and right outer seedling guides. Since the seedlings fall within the left-right width of 38a and 38d, it is possible to prevent the occurrence of places where the seedlings cannot be planted due to a mistake in taking over the seedlings. This eliminates the need to manually replant the seedlings and reduces the labor of the worker.

In addition, the longitudinal direction of the left and right inner seedling guides 38b and 38c is directed toward the front and rear of the machine body, and the front side part of the machine body of the left and right inner seedling guides 38b and 38c is arranged below the linear transport part of the seedling supply table 42. The left-right spacing between the inner seedling guides 38b and 38c is widened, and the left and right inner seedling guides 38b and 38c can be prevented from coming into contact with the elevating mechanism of the planting mechanism 40. It is possible to configure a transplanting machine suitable for narrow planting work.

The suppression mechanism 50 that suppresses the circumference of the seedlings planted by the first to fourth planting hoppers 41a, 41b, 41c, 41d is simply the outer side corresponding to the left and right outer planting hoppers 41a, 41d, respectively. It is composed of the suppression tools 100a and 100d and the inner suppression tools 100b and 100c corresponding to the left and right inner planting hoppers 41b and 41c, respectively.

The suppression mechanism 50 will be specifically described with reference to FIGS. 6 to 7.

First, compression support plates 71, 71 are provided on the left and right sides of the rear cylindrical frame 70 arranged in the left-right direction at the rear of the vehicle body 10, and rolling support plates 72, 72 are provided between the left and right suppression support plates 71, 71. The left and right suppression rotation shafts 73 and 73 are rotatably provided through mounting holes (not shown) formed on the rear side of the machine body of the left and right suppression support plates 71 and 71 and the left and right rolling support plates 72 and 72, respectively. Although the inner ends of the left and right compression rotation shafts 73 and 73 are not connected to each other, in order to prevent contact with soil and stones and to prevent the suppression rotation shafts 73 and 73 from moving toward the inside of the fuselage. One protective collar 69 covers the outer periphery of the left and right suppression rotation shafts 73 and 73 near the inner end of the machine body.

Then, the outer mounting bosses 74, 74 constituting the left and right outer suppression tools 100a, 100d are interlocked and rotated over a predetermined range from the outer end portions of the left and right suppression rotation shafts 73, 73 toward the left and right inside. Interlocking mounting portions 73a and 73a to be mounted are formed, respectively.

The interlocking mounting portions 73a and 73a have a polygonal column shape such as a quadrangular prism and a hexagonal column, and the holes of the outer mounting bosses 74 and 74 to be inserted and mounted into the interlocking mounting portions 73a and 73a have the same shape.

The left and right outer mounting bosses 74, 74 are provided with front bolts to prevent the outer mounting bosses 74, 74 from being displaced in the left-right direction at the front positions of the machine, and the left and right outer mounting bosses 74, 74 are provided with outer ends of the machine body. A retaining washer and a retaining bolt are provided in the portion to prevent the suppression action range of the left and right outer suppression tools 100a and 100d from changing during work.

The outer mounting boss 74 is provided with a pair of left and right outer suppression frames 75, 75 protruding toward the rear side of the machine body, and a first outer connecting arm connecting the rear ends of the left and right outer suppression frames 75, 75. The lower end portion of the outer suppression spring mechanism 77 for strengthening the suppression action by urging the outer suppression tools 100a and 100d downward is connected to 76.

Further, a second outer connecting arm 78 for connecting the left and right outer suppression frames 75, 75 is provided at a position on the front side of the machine body from the first outer connecting arm 76, and the second outer connecting arm 78 is provided on the front side of the machine body and left and right outer suppression. Between the left and right sides of the frames 75 and 75, hopper scrapers 79 and 79 that come into contact with the left and right outer planting hoppers 41a and 41d to scrape off the soil are attached to the front side of the machine body, and in the field scene around the planted seedlings. Suppressing mounting plates 81 and 81, which mount the compression wheels 80 and 80 on the rear side of the machine body, which come into contact with each other and step on the soil that has risen and softened during planting, are attached, respectively.

In the left and right compression mounting plates 81, 81, the left and right widths of the compression wheel mounting portions 81b, 81b on the rear side of the machine body are wider than the left and right widths of the scraper mounting portions 81a, 81a. It has a "b" or "d" shape in a plan view and protrudes toward, and elongated holes 81c in the left-right direction are formed in the compression wheel mounting portions 81b and 81b. A plurality of the elongated holes 81c may be formed in the front-rear direction of the machine body.

Further, the left and right compression wheels 80, 80 are rotatably mounted on the L-shaped compression mounting stays 82, 82 which are upside down when viewed from the front (rear surface). Specifically, a fixing nut (not shown) is welded to a portion facing the left-right direction of the machine body, and the suppression axles 83, 83 of the compression wheels 80, 80 are welded to the portion facing the machine body up-down direction, respectively. The suppression axles 83, 83 are arranged so as to project toward the left and right center portions of the left and right outer suppression frames 75, 75.

Further, the suppression wheels 80, 80 face the outer peripheral surface at the rear side position of the suppression wheels 80, 80 at the portions of the suppression mounting stays 82, 82 facing in the vertical direction of the aircraft and above the suppression axles 83, 83. , 80 are provided with compression wheel scrapers 84 and 84, respectively, which scrape off the soil adhering to the 80. The left and right compression wheel scrapers 84, 84 scrape off the soil adhering to the outer peripheral surfaces of the suppression rings 80, 80, so that the diameter of the suppression rings 80, 80 changes depending on the soil, and it is possible to prevent the suppression action from being weakened.

As a result of the above, the left and right outer planting hoppers 41a and 41d level the soil around the planted seedlings, and the left and right outer suppression tools 100a, which rotate the left and right suppression rotation shafts 73 and 73 according to the unevenness of the field. 100d is configured.

Spacer collars 85 and 85 are provided between the left and right outer mounting bosses 74 and 74 and the left and right sides of the left and right suppression support plates 71 and 71, respectively, and inside the fuselage from the left and right spacer collars 85 and 85. , Inner mounting bosses 86 and 86 are provided rotatably, respectively. The inner mounting bosses 86, 86 are hollow cylinders, and are configured to rotate around the left and right suppression rotation shafts 73, 73.

The bases of the pair of left and right inner suppression plates 87, 87 are inserted into the outer peripheral surfaces of the left and right inner mounting bosses 86, 86 and fixed by welding or the like. Then, the inner suppression frames 88 and 88 are fixed to the rear end portions of the left and right inner suppression plates 87 and 87, respectively.

The left and right inner suppression plates 87 and 87 are rectangular parallelepiped plates whose vertical width is wider than the left and right width, and the left and right width is narrower than the diameter of the inner suppression frames 88 and 88. Further, the left and right inner suppression frames 88 and 88 are attached to the outer sides of the left and right inner suppression plates 87 and 87, respectively. Then, on the inner connecting arm 89 that connects the rear ends of the left and right inner suppressing frames 88 and 88, the lower end portion of the inner suppressing spring mechanism 90 that urges the inner suppressing tools 100b and 100c downward to strengthen the suppressing action is provided. Link.

Further, on the front side of the inner connecting arm 89 and between the left and right inner suppression frames 88 and 88, the hopper scrapers 79 and 79 come into contact with the left and right inner planting hoppers 41b and 41c to scrape off the soil. Is mounted on the front side of the machine body, and the suppression mounting plates 81 and 81 for mounting the suppression wheels 80 and 80 on the rear side of the machine body are mounted respectively.

The suppression mounting stays 82 and 82 are also provided on the left and right suppression mounting plates 81 and 81, respectively, the suppression wheels 80 and 80 are provided on the suppression axles 83 and 83, and the left and right compression wheel scrapers 84 and 84 are provided, respectively. ..

As described above, the left and right inner planting hoppers 41b and 41c are configured to level the soil around the planted seedlings and to rotate the left and right inner pressurizers 100b and 100c according to the unevenness of the field. NS.

The suppression mounting plates 81, 81 attached to the left and right inner suppression frames 88, 88 are arranged inside the machine body with respect to the suppression mounting plates 81, 81 attached to the left and right outer suppression frames 75, 75, whereby the inner side is arranged. The suppression action areas of the suppression rings 80 and 80 of the suppression tools 100b and 100c are closer to the rear side of the machine body than the suppression action areas of the outer suppression tools 100a and 100d.

Further, the left and right cable member arms 312 and 312 constituting the inclination detection member 300 described later rotate between the left and right of the left and right inner pressurizing tools 100b and 100c and on the outside of the rolling support plates 72 and 72, respectively. It can be installed freely. The left and right cable member arms 312 and 312 are arranged between the left and right inner suppression plates 87 and 87 and facing the space 91 formed in front of the left and right inner suppression frames 88 and 88. It is configured.

As described above, the suppression device 50 is configured.

Of the left and right outer suppression frames 75 and 75, interlocking rods 92 and 92 protruding toward the inside of the aircraft are provided near the center of the outer suppression frame 75 located inside the aircraft in the front-rear direction and on the lower side of the aircraft. The end side of the interlocking rods 92, 92 on the inner side of the machine body is made to face below the inner suppression frame 88 located on the outer side of the machine body among the left and right inner suppression frames 88, 88.

By arranging the interlocking rods 92 and 92 so as to face below the left and right inner suppression frames 88 and 88, the left and right inner suppression tools 100b and 100c are interlocked when the left and right outer suppression tools 100a and 100d are rotated upward. Then, it rotates upward, and at the time of downward rotation, the left and right inner suppressors 100b and 100c rotate downward according to the downward rotation amount of the left and right outer suppressors 100a and 100d.

With the above configuration, the adjacent left and right inner suppressors 100b and 100c can be rotated up and down in conjunction with the vertical rotation of the left and right outer suppressors 100a and 100d. It can be detected by 300 and the posture of the vehicle body 10 with respect to the field scene can be kept horizontal. As a result, it is possible to prevent the seedlings from being planted diagonally in the field scene and to prevent the traveling direction from being disturbed by the inclination of the vehicle body 10, and it is possible to prevent the seedlings from being planted with a decrease in accuracy.

Further, when there are large irregularities or stones near the center of the ridges being planted, which are not so related to the left-right inclination of the vehicle body 10, the left and right inner suppressors 100b and 100c can be independently rotated up and down. Therefore, it is prevented that the left and right inner suppressors 100b and 100c become running resistance due to the influence of unevenness and stones.

Further, since the distance between the left and right of each of the suppression rings 80 and 80 can be adjusted, it is possible to suppress an appropriate position according to the type of seedling to be planted and the growth stage. This prevents the soil around the seedlings from solidifying, causing the seedlings to fall or suffering from poor growth due to the influence of the outside air, and the suppression rings 80 and 80 to prevent the seedlings from being trampled, resulting in good seedling growth. become.

Further, by mounting the left and right inner suppression plates 87 and 87 having narrow left and right widths on the left and right inner mounting bosses 86 and 86, the cable member arms 312 and 312 rotate up and down without interfering with the inner suppression plates 87 and 87. Since it is possible, when the vehicle body 10 is tilted in the left-right direction, it can be quickly returned to the horizontal posture, and the deterioration of the seedling planting accuracy is prevented.

The above-mentioned suppression device 50 needs to be grounded during planting work, but if it is near a field scene during non-working running, it may become running resistance or may be damaged by coming into contact with an object near the ground. Further, if the suppression device 50 is located near the field scene during turning, the suppression device 50 may hinder the turning running or may be damaged by the ground resistance.

During non-working or turning, the elevating cylinder is extended to raise the vehicle height of the vehicle body 10 higher than during planting work. The end is pulled toward the front of the machine. Then, the other end of the suppression elevating cable is connected to the elevating cable stays 93, 93 provided on the left and right outer mounting bosses 74, 74. The suppression elevating cable starts to pull up the suppression device 50 at a position where the vehicle height of the vehicle body 10 exceeds the upper limit position of the planting work, and loosens and suppresses when the vehicle height is lower than the upper limit position of the planting work. The device 50 is stretched so as not to be pulled upward.

As a result, the suppression device 50 automatically rotates upward when the vehicle height is set so that the planting work is not performed, so that the suppression device 50 is prevented from coming into contact with the ground while traveling or turning, and the vehicle body may be damaged or the vehicle body may be damaged. It is prevented from hindering the running of 10.

Further, since the left and right outer suppression tools 100a and 100d are configured to rotate upward, the left and right inner suppression tools 100b and 100c can be rotated upward in conjunction with each other, so that the left and right inner suppression tools 100b and 100c can be rotated upward. The mechanism for vertically rotating the vehicle body 10 according to the vehicle height adjustment is not required, and the configuration can be simplified.

The compression rings 80, 80 of the first to fourth suppression tools 100a, 100b, 100c, and 100d shown in the figure are arranged in a horizontal or substantially horizontal posture with respect to the ground plane. For seedlings such as lettuce seedlings that have a certain width on the left and right, it is preferable to arrange the above-mentioned suppression rings 80 and 80 that can widely suppress both the left and right sides of the seedling.

However, for seedlings with a small left-right width such as onion seedlings, even if the left-right spacing of the suppression rings 80 and 80 is minimized, the soil around the seedlings cannot be sufficiently suppressed, and the seedlings may fall or be in the soil. Cold air may enter and be affected by low temperatures.

The second suppression device 150 for suppressing the soil near the thin seedlings is configured as follows. As shown in FIGS. 8 to 10, the left side mounting plate 180L is attached to the outer suppression frame 75 and the inner suppression frame 88 located on one side of the left and right sides of the machine (on the left side of the machine) with the left side mounting plate 180L facing downward, and the lower end portion of the left side mounting plate 180L. In addition, the left side suppression stay 181L, which has a "he" shape when viewed from the side, is welded at the lower front side of the machine and in a posture toward the left and right center parts of the left and right outer suppression frames 75,75 or the left and right inner suppression frames 88,88. Fixed by.

Then, the left side suppression axle 182L is arranged in a posture toward the left and right center portions of the left and right outer suppression frames 75,75 or the left and right inner suppression frames 88,88 and toward the upper side of the machine body, and the left side suppression axle 182L is used for left side suppression. The wheel 183L is rotatably arranged in a left-right tilted posture closer to the left-right center portion of the left-right outer suppression frames 75, 75 or the left-right inner suppression frames 88, 88 toward the lower side of the machine body when viewed from the rear.

The left side compression wheel 183L is fixed to the left side of the left side axle 182L by using a fixing member 184 such as a bolt or a nut from one side of the machine body, that is, from the lower side of the machine body. It is configured to be attached to the lower side of the fuselage.

Further, a long hole in the vertical direction or a plurality of mounting holes in the vertical direction are formed in the vicinity of the front end of the left side compression stay 181L to which the left side compression ring 183L is mounted, and the vertical position of the left suppression ring 183L can be adjusted. Attach to.

Further, a left wheel tractor paste 185L facing the lower side of the fuselage is provided on the front and rear portions of the left side wheel tractor stay 181L, and the action portion faces the rear side of the left wheel tractor paste 185L via the side surface of the left wheel tractor ring 183L. , L-shaped left scraper 186L is provided. A long hole in the front-rear direction is formed in the left scraper paste 185L so that the front-rear distance between the left-side compression ring 183L and the left-side scraper 186L can be adjusted.

Then, the right side mounting plate 180R is attached to the outer suppression frame 75 and the inner suppression frame 88 located on the left and right sides of the machine (on the right side of the machine) with the right side mounting plate 180R facing downward, and to the lower end of the right side mounting plate 180R, "to" in a side view. The right side suppression stay 181R in the shape of "" is fixed by welding or the like at the lower rear side of the machine body and in a posture toward the left and right center portions of the left and right outer suppression frames 75, 75 or the left and right inner suppression frames 88, 88.

Then, the right side suppression axle 182R is arranged in a posture toward the left and right center portions of the left and right outer suppression frames 75,75 or the left and right inner suppression frames 88,88 and toward the upper side of the machine body, and the right side suppression axle 182R is used for right side suppression. The wheel 183R is rotatably arranged in a left-right tilted posture closer to the left-right center portion of the left-right outer suppression frames 75, 75 or the left-right inner suppression frames 88, 88 toward the lower side of the machine body when viewed from the rear.

The right-side compression wheel 183R is fixed from the left and right sides of the right-side compression axle 182R, that is, from the lower side of the fuselage by using fixing members 184 such as bolts or nuts. It is configured to be attached to the lower side of the fuselage.

In addition, a long hole in the vertical direction or a plurality of mounting holes in the vertical direction are formed near the front end of the right-side compression stay 181R to which the right-side compression ring 183R is mounted, and the vertical position of the right suppression ring 183R can be adjusted. Attach to.

Further, a right-side wheel tractor paste 185R facing the lower side of the aircraft is provided on the front-rear portion of the right-side suppression stay 181R, and the action portion faces the rear side of the right-side scrap paste 185R via the side surface of the right-side suppression ring 183R. , An L-shaped right scraper 186R is provided. A long hole in the front-rear direction is formed in the right-side scraper paste 185R so that the front-rear distance between the right-side compression ring 183R and the right-side scraper 186R can be adjusted.

In the above configuration, since the lower sides of the left and right suppression rings 183L and 183R are close to each other in the rear view, the suppression action positions of the left and right suppression rings 183L and 183R can be brought closer to the planted seedlings. As a result, the soil around the seedlings remains soft, and it is possible to prevent the seedlings from collapsing due to the influence of wind or the like, or to lower the temperature in the soil and adversely affect the growth.

Further, by making the mounting positions of the left side mounting plate 180L and the right side mounting plate 180R different in the front-rear direction of the machine body, the front-rear positions of the left and right suppression wheels 183L and 183R are less likely to be displaced, and the surroundings of the seedlings can be reliably suppressed. The outer suppressors 100a and 100d and the inner suppressors 100b and 100c interfere with each other while narrowing the left-right distance between the inner side of the machine and the inner suppressors 100b and 100c of the outer suppressors 100a and 100d. Is prevented.

Further, since the mounting position of the fixing member 184 for fixing the left and right compression rings 183L and 183R is lower than the upper and lower center portions of the left and right compression rings 183L and 183R, the right suppression wheels of the outer compression rings 100a and 100d Although the left and right distance between the 183R and the left side compression ring 183L of the inner compression wheels 100b and 100c is narrow, a space for attaching and detaching the fixing member is formed diagonally below the left and right compression rings 183L and 183R. The work time required can be reduced.

Next, as shown in FIGS. 11 to 13, the tilt of the vehicle body 10 in the left-right direction is detected based on the difference in the amount of vertical rotation of the left and right outer suppressors 100a and 100d, and the vehicle body 10 is placed in a horizontal posture with respect to the field scene. The arrangement of the inclination detecting member 300 to be performed will be described.

A space for arranging the inclination detecting member 300 to which the cable member 320 is connected is formed between the left and right of the left and right inner pressurizing tools 100b and 100c. As described above, the tilt detection member 300 has a tilt detection arm member 310 corresponding to the left and right outer pressurizing tools 100a and 100d, respectively.

The left cable member 320 is connected to the left tilt detection arm member 310 interlocking with the suppression rotation shaft 73 on the left side of the machine, and the right cable member 320 is right tilt interlocking with the suppression rotation shaft 73 on the right side of the machine. It is connected to the detection arm member 310.

The lower cable in the cable member 320, which is a rolling wire as a linking member, is located below the main frame or handle frame of the vehicle body 10 from the rear to the front without interfering with the rotatable compression device 50. Be laid out.

The inclination detection arm member stopper 310c is brought into contact with the vehicle body sticking plate 10a as the contacted member from below, so that the tilt detection arm member stopper 310c is attached to the elevating link device 40a due to excessive elevation of the suppression device 50 due to the descent of the vehicle body 10 at the end of the ridge. Suppress interference.

To facilitate various adjustment operations, the left and right inner suppression plates 87, 87, the left and right inner suppression frames 88, 88, and the inclination detection member 300 projecting rearward at an inclination angle that does not overlap in the side view are provided. A cable member 320 towed by left and right tilt detection arm members 310 that rotate in conjunction with the first to fourth pressurizers 100a, 100b, 100c, and 100d is connected.

The vehicle body front-rear direction adjustment bolt 310b is inserted into the vehicle body front-rear direction adjustment slot 310a, and the rear portion of the tilt detection arm member as a wire support arm for positioning is attached to the front portion of the vehicle body front-rear direction adjustment arm member so as to be movable in the vehicle body front-rear direction. Has been done. Therefore, based on the detection result of the inclination detecting member 300, the vehicle body 10 is inclined so that the first to fourth planting hoppers 41a, 41b, 41c, 41d are perpendicular to the field scene, and the planting horizontal maintenance is maintained. The rolling function as a function is realized more reliably.

The cable outer member receiving 321 of the cable member 320 is located in front of the planting mechanism support portion 40b of the planting mechanism 40 so that the adjustment operation can be easily performed.

The tilt detection arm member regulator 310d formed on the horizontal maintenance sensitivity adjustment plate of the tilt detection arm member 310 together with the cable passage hole through which the cable inner member of the cable member 320 passes causes a change in the cable operating range due to the sensitivity adjustment. Instead, it regulates the cable operating range and suppresses the increase in hydraulic valve load due to excessive cable traction. The tilt detection arm member regulator 310d of the left tilt detection arm member 310 regulates the cable operating range of the left tilt detection arm member 310 by abutting the right tilt detection arm member 310 from above, and the right tilt detection arm member. The tilt detection arm member regulator 310d of 310 regulates the cable operating range of the right tilt detection arm member 310 by abutting the left tilt detection arm member 310 from below.

The left or right tilt detection arm member 310 is divided into a suppression tool arm 311 interlocking with the left and right outer suppression tools 100a and 100d, and a cable member arm 312 to which the cable member 320 is connected.

In the present embodiment, the left inclination detection arm member 310 is divided into a suppression tool arm 311 interlocking with the left and right outer suppression tools 100a and 100d, and a cable member arm 312 to which the cable member 320 is connected. There is.

The cable member arm 312 is attached to the suppressor arm 311 so that the attachment position can be adjusted.

The left tilt detection arm member 310 is divided into a pressurizing tool arm 311 as a rotation support shaft arm on the front side of the vehicle body and a cable member arm 312 as an adjustment arm on the rear side of the vehicle body. The adjustment bolt 311b is inserted into the vehicle body vertical adjustment slot 311a. As a result, the amount of left-right movement in the planting horizontal maintenance function is adjusted by rotating the cable member arm 312 in the vertical direction.

In the vicinity of the right tilt detection arm member 310, there is a so-called depth sensor for adjusting the vehicle height based on the amount of rotation while rotating in contact with an uneven field scene, and the left and right outside of the vehicle body rolling mechanism. Since the reference portion for detecting the difference in the amount of rotation of the pressurizing tools 100a and 100d is provided, and the right inclination detection arm member 310 which is the vertical height reference in the planting horizontal maintenance function is not divided, the vehicle body 10 The left-right inclination can be easily set according to the field inclination, the field soil quality, and the like, and the planting posture in which the planting hopper 41 is more vertical to the field scene is realized more reliably, and the seedling planting accuracy is improved.

When the left and right outer suppression tools 100a and 100d rotate up and down, the left and right suppression rotation shafts 73 and 73 rotate in conjunction with each other, and the left and right cable member arms 312 and 312 rotate in the front-rear direction in conjunction with each other. do. At this time, the amount of pulling of each of the cable members 320 and 320 fluctuates due to the change in the vertical position of each of the left and right inclination detection arm members 310 and 310, and each one side end portion of the cable members 320 and 320 is connected. The opening degree of the hydraulic valve (not shown) is changed in either the extension direction or the contraction direction. When the opening degree of the hydraulic valve changes, the connected rolling cylinder expands, and the traveling transmission case 21 on the left and right sides is rotated up and down to change the vehicle height on the left and right sides of the vehicle body 10.

As a result, the left-right inclination of the vehicle body 10 can be changed according to the inclination of the field scene, so that the planting posture of the seedlings becomes vertical or substantially perpendicular to the field scene, and the planting accuracy is improved.

In addition, instead of the left and right outer suppressors 100b and 100c provided near the center of the left and right sides of the vehicle body 10 where the difference in height between the left and right is unlikely to occur, the difference in height between the left and right tends to be large due to the influence of the depth of the ridges and the like. By detecting the left-right inclination of the vehicle body 10 by the outer suppressors 100a and 100d, the vehicle body 10 can be rolled into a horizontal posture when there is a large left-right inclination that affects the planting of seedlings.

As a result, it is possible to prevent the rolling cylinder from expanding and contracting and the vehicle body 10 from frequently rolling when a slight left-right inclination that does not affect the planting of seedlings is detected, so that the planting posture is prevented from being disturbed. ..

Only the vertical adjustment of the vehicle body regarding the left and right outer pressurizing tools 100a and 100d can be performed, and so-called left-right balance adjustment, lift position adjustment, stopper position adjustment and the like are unnecessary.

Since the cable member 320 is located behind the space in the left-right direction of the left and right inner planting hoppers 41b and 41c and the left and right outer pressurizers 100a and 100d, not only the front-back movement operation of the cable member 320 but also the cable member arm It is easy to perform adjustment operations such as vertical rotation of 312.

The first to fourth planting hoppers 41a, 41b, 41c, 41d raise and lower the first planting hopper 41a and the second planting hopper 41b on one side of the left and right sides of the machine (on the left side of the machine) by the elevating link device 40aL on the left side. At the same time, the third planting hopper 41c and the fourth planting hopper 41d on the left and right sides of the machine (on the right side of the machine) are moved up and down by the elevating link device 40aR on the right side.

The left-right spacing between the seedlings to be planted, the so-called inter-row spacing, can be set by moving the planting hopper in the left-right direction in a transplanting machine that can easily secure the adjustment range, such as double-row planting. In a multi-row planting machine such as a 4-row planting machine in which it is difficult to secure an adjustment range by the device, the hopper structure of the planting hopper is arranged in an inclined posture in the left-right direction of the machine, and the space between the rows is set.

Therefore, in the multi-row planting transplant machine, the planting rows are basically determined by the planting hopper attached, and it is necessary to replace the planting hopper with a planting hopper corresponding to the different rows in order to perform the work between the different rows. There is. However, there is a problem that a lot of man-hours are required for the replacement work and extra time and labor must be spent.

The configuration of the first to fourth planting hoppers 41a, 41b, 41c, 41d to be attached to the left and right elevating link mechanisms 40aL, 40aR to solve this problem will be described. In this case, the configuration will be described using the elevating link mechanism 40aL on the left and right sides of the machine and the first and second planting hoppers 41a and 41b. Since the planting hoppers 41c and 41d of No. 4 have a symmetrical structure, the description thereof will be omitted.

As shown in FIGS. 3 to 5, at the rear of the upper and lower elevating link arms 420 and 421, the first and second planting hoppers 41a, which rotate back and forth by the elevating and lowering of the upper and lower elevating link arms 420 and 421, Swing arms 422 and 422 that swing 41b in the front-rear direction are provided. A cylindrical mounting support shaft 423 is provided on the upper side of the left and right swing arms 422 and 422, respectively, in the left-right direction.

Then, a U-shaped hopper mounting stay 424 is mounted on the front side of the planted hoppers 41a, 41b, 41c, 41d in a plan view. As shown in FIGS. 14A and 14B, the left and right sides of the hopper mounting stay 424 form bent portions 425 and 425 toward the front side of the machine body, respectively, and the bent portions 425 and 425 have the mounting support shaft. The receiving holes 425a and 425a into which the 423 is inserted are formed.

Further, in the hopper mounting portion 426 located between the left and right bent portions 425 and 425 of the hopper mounting stay 424, holes having the same diameter are continuously provided in the left-right direction of the machine body, and the planting hopper 41a (41b) is provided. Mounting holes 426a and 426a for passing fixing members such as bolts are formed on both the left and right sides, which are located lower as they approach the center in the left-right direction of the machine. Further, a receiving member, for example, a nut, which is detachably received by the fixing member, is provided on the back surface (rear side of the machine body) of the hopper mounting stay 424 so that the fixing member can be attached and detached.

The mounting holes 426a are formed by overlapping holes 426a1, 426a2, 426a3, etc. having the same diameter, and can be moved without completely removing the fixing member and the receiving member by loosening the tightening of the fixing member. Then, the posture of the planting hopper 41a (41b, 41c, 41d) can be easily changed.

The hopper mounting stay 424 is mounted on the front side of the hopper frame 427, which mounts the seedling guide 38 for guiding the seedlings falling from the seedling supply table 42 and the left and right hopper components 39, 39. In the front side portion of the hopper frame 427, one hole having the same diameter as the hole 426aL (426aC, 426aR ...) constituting the mounting hole 426a is formed on each side, and a fixing member such as a bolt is inserted into this hole. And.

In the case where the above mounting hole 426a is composed of three holes 426a1, 426a2, 426a3 in the left-right direction, an example of changing the angle of the planting hopper 41a (41b) to change the planting rows of seedlings will be described. do. When the fixing members are inserted into and fixed to the central holes 426a2 and 426a2 shown in FIG. The space between the planting hoppers 41a and 41b is set to the basic space S.

Next, as shown in FIG. 15B, in the planting hopper 41a on the right side, one of the left and right fixing members is provided in the hole 426a1, and the other left and right fixing members are provided in the hole 426a3. Then, in the planting hopper 41b on the left side, one of the left and right fixing members is provided in the hole 426a3, and the left and right fixing members are provided in the hole 426a1.

As a result, the left and right planting hoppers 41a and 41b are in a posture of approaching each other toward the lower end side, so that the space between the adjacent left and right planting hoppers 41a and 41b is set to the narrow space N.

Next, as shown in FIG. 15 (c), in the planting hopper 41a on the right side, one of the left and right fixing members is provided in the hole 426a3, and the other left and right fixing members are provided in the hole 426a1. The left-right planting hopper 41b is provided with one of the left and right fixing members in the hole 426a1 and the left and right fixing members in the hole 426a3.

As a result, the left and right planting hoppers 41a and 41b are in a posture in which they are separated from each other toward the lower end side, so that the spaces between the left and right planting hoppers 41a and 41b that are adjacent to each other are set to wide strips W.

With the above configuration, the planting rows of the seedlings can be changed without moving the left and right planting hoppers 41a and 41b in the left-right direction, so that the planting hoppers 41a, 41b, 41c and 41d interfere with each other. It is possible to plant seedlings at appropriate left-right intervals without any problems.

As a result, the seedlings can grow with an appropriate growth space, so that the size and yield of the harvested crop are ensured. In addition, since the field is well ventilated during growth, pests and molds are less likely to occur.

When setting the space between the left and right planting hoppers 41a and 41b, it is common to have the same posture on the left and right as shown in FIGS. 15 (a) to 15 (c). The mounting posture may be changed on only one side, and different planting strips may be set to further improve the adaptability of working conditions.

When the seedlings to be transplanted are crops such as onions whose harvesting part grows underground, the planting positions of the planting hoppers 41a, 41b, 41c, 41d are not side by side, and the first planting hoppers 41a and the third planting are not arranged side by side. It is desirable to make a so-called staggered planting in which the planting position between the attached hoppers 41c and the planting position between the second planting hopper 41b and the fourth planting hopper 41d are displaced back and forth.

As shown in FIG. 16, by arranging the left and right planting hoppers 41a, 41b, 41c, and 41d at different front-back tilt angles in the side view, the arrangement corresponds to staggered planting. By changing the front-rear tilt angle of the hopper mounting stay 424 mounted on the mounting support shaft 423, the front-back tilt angles of the left and right planting hoppers 41a, 41b, and 41c, 41d can be made different.

As a result, the crop can obtain a sufficient growth space in the soil, so that the size and yield of the harvested crop can be ensured.

As described above, the left-right inclination of the field scene (ridge surface) is detected by using the difference in the left-right rotation amount of the left and right outer suppressors 100a and 100d, but since it is configured to be detected on the rear side of the machine body. For some seedlings that are planted before the aircraft rolls, the planting depth may not be as set or the planting attitude may be tilted to the left or right. This may cause problems such as poor growth of seedlings or collapse of seedlings.

In order to deal with this problem, as shown in FIG. 17, at the lower part of the vehicle body 10 and at the position on the front side of the machine body from the planting hoppers 41a, 41b, 41c, 41d, the surface is grounded by the ridge surface and the surface is pressed and leveled by the load. At the same time, left and right front suppression devices 500 and 500 that rotate up and down according to the unevenness of the ridge surface that cannot be compressed by the ground load are provided. Since the planting depth of the front side suppression devices 500 and 500 becomes shallow when the ridge surface is excessively pressed, the ground contact load can be adjusted but is set lightly, so that the soil quality and ridges of the field are hardened. Depending on the method, the ridge surface may not be pressed and leveled, so that it can rotate up and down to become a running resistance and prevent it from diving into the soil.

The front side suppression device 500 is provided in the vicinity of the central portion in the left-right direction of the vehicle body 10 so as to be rotatable back and forth near the upper portion of the L-shaped sensor arm 501 in a side view, and is located near the bent portion on the lower side of the sensor arm 501. , The base of the roller arm 503, which is rotatably mounted with the front suppression roller 502 near the rear end, is rotatably mounted up and down. Further, in the vicinity of the rear end portion of the sensor arm 501 and at a position above the roller arm 503, a rotation regulation hole 501a for inserting a regulation pin 504 that contacts the upper surface of the roller arm 503 and restricts upward rotation is vertically provided. Multiple formations are formed at predetermined intervals in the direction. A urging support arm 509 is rotatably provided at the bent portion of the sensor arm 501 together with the sensor arm 501 in an inclined posture toward the rear side and upper side of the machine body when viewed from the side.

Then, on the rear side of the roller arm 503 and on the front side of the mounting portion of the front compression roller 502, the lower side of the compression spring 505 that urges the roller arm 503 downward to press and equalize the ridge surface is attached. At the same time, the upper end portion is attached to the rear upper side of the urging support arm 509. The compression spring 505 is configured such that a spring body 505b is provided on the outer periphery of the rod 505a and the urging force can be adjusted by a pressure adjusting nut 505c provided on the upper side.

Further, an auxiliary spring that urges the sensor arm 501 to the front side to prevent unnecessary rotation of the sensor arm 501 due to vibration of the machine body or the like on the lower side and the rear side of the rotation fulcrum of the sensor arm 501. Attach the front side of the 506. The rear side of the auxiliary spring 506 shall be mounted on the vehicle body 10.

Further, near the upper part of the sensor arm 501, the base side of the second cable member 507 that is pulled or loosened by the front-back rotation of the sensor arm 501 is mounted. The end sides of the left and right second cable members 507 are attached to the hydraulic valves in place of the cable members 320 and 320, respectively, and when the opening degree of the hydraulic valves changes, the connected rolling cylinder expands. Then, the traveling transmission case 21 on the left and right sides is rotated up and down to change the vehicle height on the left and right sides of the vehicle body 10. As described above, the left and right front suppression devices 500 and 500 are configured, respectively.

If the front suppression rollers 502 are not in contact with the ground, the left and right front suppression devices 500, 500 will rotate downward due to their own weight and the urging force of the suppression spring 505. In this state, the left and right front suppression devices 500, 500 are located at the height immediately before touching the field scene or touching the field scene, and the operator pushes the rear side of the vehicle body 10 downward to lift the front side. When turning with the drive rear wheel 12 on the inner side of the turn as a fulcrum, the left and right front suppression devices 500, 500 may come into contact with the ground and hinder smooth turning.

In order to prevent this problem, the roller arm 503 is rotated to the upper limit by being pulled or loosened in conjunction with the expansion and contraction of the elevating cylinder near the central portion in the front-rear direction of the roller arm 503. A lift cable 508 that rotates the rear side upward of the machine is attached to each of the left and right sides. As a result, when the elevating cylinder is contracted during turning and the rear side of the left and right running transmission cases 21 and 21 is lowered to make the vehicle body 10 a vehicle height suitable for turning, the left and right front side suppression devices 500 and 500 are used for the vehicle body. Since it rotates upward until it approaches the lower part of 10, the turning running can be smoothly performed and the decrease in work efficiency is prevented.

With the above configuration, the height of the field scene before planting the seedlings is detected and the rolling control of the vehicle body 10 is performed. Therefore, even if the ridge surface is inclined to the left or right from the start of the ridge planting work, the vehicle body 10 is horizontal. It is maintained and the planting posture of seedlings is stable.

Further, by restricting the upward rotation position of the roller arm 503 with the regulation pin 504, the roller arm 503 rotates upward immediately in a place where the pressure cannot be leveled, so that the vehicle body is in a place where the ridge surface is inclined to the left or right. 10 makes it easier to maintain level.

Further, by urging the roller arm 503 downward with the compression spring 505, the small protrusions on the ridge surface can be pressed and leveled to be flattened, so that the planting depth and the planting posture are disturbed by unnecessary rolling control. Is prevented and the planting accuracy of seedlings is improved.

Further, by urging the sensor arm 501 to the front of the machine body by the auxiliary spring 506, it is possible to prevent the sensor arm 501 from rotating significantly when the vehicle body 10 vibrates and pulling the second cable member 507. Rolling control is prevented from being erroneously performed in a place where the ridge surface is flat.

The transplanting machine in the present invention has a simple structure for the suppression mechanism, which makes the structure simple and easy to maintain, and the number of parts is reduced to reduce the weight. Therefore, the seedlings can be run in the field. It is useful for the purpose of transplanting the seedlings and using it as a transplanting machine having a structure in which the surroundings of the transplanted seedlings are suppressed by a suppression mechanism.

10 Body 38a Outer seedling guide 38b Inner seedling guide 38c Inner seedling guide 38d Outer seedling guide 41a First planting hopper (planting device)
41b 2nd planting hopper (planting device)
41c 3rd planting hopper (planting device)
41d 4th planting hopper (planting device)
42 Seedling supply table (seedling supply device)
73 Suppression rotation shaft 73a Interlocking mounting part 74 Outer mounting boss (outer mounting shaft part)
75 Outer suppression frame (outer suppression arm)
80 Suppression ring (outer suppression rotating body, inner suppression rotating body)
81 Suppression mounting plate (outer support plate, inner support plate)
86 Inner mounting boss (inner mounting shaft)
88 Inner suppression frame (inner suppression arm)
92 Interlocking rod (interlocking member)
100a Outer suppression device (suppression device, outer suppression device)
100b Inner suppression device (suppression device, outer suppression device)
100c inner suppression device (suppression device, outer suppression device)
100d outer suppression device (suppression device, outer suppression device)
300 Tilt detection member (elevating member)
310 Tilt detection arm member 320 Cable member (transmission member)

Claims (4)

A plurality of planting devices (41a, 41b, 41c, 41d) for planting seedlings in a field and a suppression device for suppressing the soil around the seedlings planted by the plurality of planting devices (41a, 41b, 41c, 41d). In a transplant machine provided with (100a, 100b, 100c, 100d) and an elevating member (300) for moving the vehicle height up and down on the vehicle body (10).
Of the plurality of suppression devices (100a, 100b, 100c, 100d), the left and right outer suppression devices (100a, 100d) arranged on the outside of the machine body, or the left and right inner suppression devices (100b, 100c) arranged on the inside of the machine body. either outside suppression device of the right and left in conjunction with the upper side rotation (100a in), 100d) or the left and right inner suppression device (100b, 100c) and configured to be rotated upward,
A horizontal maintenance mechanism is provided to make the vehicle body (10) in a horizontal posture with respect to the field scene according to the unevenness of the field scene detected by the plurality of suppression devices (100a, 100b, 100c, 100d).
The horizontal maintenance mechanism is provided with the left and right outer suppression devices (100a, 100d) on the outer side of the machine body of the left and right suppression rotation shafts (73, 73) that can be rotated, respectively, from the left and right outer suppression devices (100a, 100d). The left and right inner suppression devices (100b, 100c) are rotatably provided inside the machine, and the left and right suppression rotation shafts (73) are located inside the machine than the left and right inner suppression devices (100b, 100c). , 73) are provided with tilt detection arms (310, 310) that rotate in conjunction with the rotation of the left and right tilt detection arms (310, 310), and the rotation of the left and right tilt detection arms (310, 310) is transmitted to the vehicle of the vehicle body (10). A transplanting machine characterized in that it is configured by providing a transmission member (320, 320) that moves the height up and down. The left and right suppression rotation shafts (73, 73) each form an interlocking mounting portion (73a, 73a) for interlocking and rotatably mounting the left and right outer suppression devices (100a, 100d) on the outside of the machine body. death,
The left and right outer suppression devices (100a, 100d) are mounted on the outer mounting shaft portion (74,74) to be mounted on the interlocking mounting portion (73a, 73a) and the outer mounting shaft portion (74,74), respectively. It is composed of left and right outer suppression support arms (75,75) and outer suppression rotating bodies (80,80) attached to the left and right outer suppression support arms (75,75), respectively.
The left and right inner suppression devices (100b, 100c) include an inner mounting shaft portion (86, 86) that is rotatably mounted on the interlocking mounting portion (73a, 73a) and the inner mounting shaft portion (86, 86). Attached to the left and right inner suppression support arms (88,88) and the left and right inner suppression support arms (88,88), each of which has a left-right width on the base side connected to the base narrower than the left-right width on the rear side of the aircraft. The transplanting machine according to claim 1, wherein the transplanting machine is composed of an inner suppressing rotating body (80, 80). The left and right outer suppression support arms (75,75) support the outer support plates (81,81) that support the left and right outer suppression rotating bodies (80, 80) in an inclined posture that approaches each other toward the lower side of the machine. )
The left and right inner suppression support arms (88,88) support the inner support plates (81,81) that support the left and right inner suppression rotating bodies (80,80) in an inclined posture that approaches each other toward the lower side of the machine. )
The outer mounting member (81, 81) for mounting the outer suppression rotating body (80, 80) on the left and right outer support plates (81, 81), and the inner side on the left and right inner support plates (81, 81). The inner mounting member (81,81) for mounting the squeezing rotating body (80, 80) is more than the vertical center of the outer squeezing rotating body (80, 80) and the inner squeezing rotating body (80, 80). The transplanting machine according to claim 2, wherein the transplanting machine is arranged on the lower side. From the outer suppression device (100a, 100d), an interlocking member (92, 92) that comes into contact with the inner suppression device (100b, 100c) and moves up and down is attached to the outer suppression device (100a, 100d). The transplant machine according to any one of claims 1 to 3 , wherein each of them is provided toward the inner suppression device (100b, 100c).

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