JP5497581B2 - Transplanter - Google Patents

Description

  The present invention relates to a transplanter such as a riding type rice transplanter, and more particularly, to a transplanter provided with a seedling transport stand for transporting a spare seedling from a front side to a rear side of a traveling machine body.

  2. Description of the Related Art A transplanting machine such as a riding type rice transplanter that is configured by connecting a planting work machine to the rear part of a traveling machine body and planting seedlings while traveling in a farm field is widely known. In the seedling planting work using such a transplanter, when the number of seedlings placed on the seedling table during the planting work is reduced, the operator puts the traveling machine body perpendicularly to the heel, I received a spare seedling from an assistant who was in the process and replenished the seedling stand.

  Conventionally, in order to reduce such a supplementary seedling replenishment operation, a transplanter having a seedling carrier on the outer side of the traveling machine has been proposed. For example, the seedling conveying platform shown in Patent Documents 1 and 2 is composed of a roller conveyor capable of conveying the spare seedling from the front side to the rear side of the traveling machine body, and the operator travels the preliminary seedling conveyed by the seedling conveying table. Since it can be received on the rear side of the machine body, the spare seedling can be efficiently transferred to the seedling stage.

  Moreover, the seedling conveyance stand shown by patent document 1, 2 can be rotated in the up-down direction and / or the left-right direction. According to such a seedling transport stand, when supplying the spare seedling from a truck on the edge, it is possible not only to adjust the transport start end position of the seedling transport stand up and down and / or left and right, but also There is an advantage that it is possible to solve the problem that the seedling conveyance table obstructs the work when the fertilizer is replenished to the fertilizer tank provided below the conveyance table.

JP 2009-153423 A Japanese Patent Application No. 2010-2776

  However, when the seedling transport table can be rotated in the vertical direction and / or the left-right direction, at least during the rotation operation of the seedling transport table, the entire load of the seedling transport table is supported by the rotation fulcrum portion. The rotating fulcrum portion has to be made strong, and the increase in size and cost of the rotating fulcrum portion has been a problem. In particular, as in the case of the seedling carrier shown in Patent Document 2, when turning in the left-right direction with a pivotal fulcrum provided behind the center of gravity as a fulcrum, the pivotal fulcrum is biased forward. Since the load acts, the above problem is remarkable.

  The present invention was created for the purpose of solving these problems in view of the situation as described above, and includes a seedling transport stand for transporting a spare seedling from the front side to the rear side of the traveling machine body, In the transplanter capable of rotating the seedling carrier in the left-right direction, a support stay provided on the outer side of the traveling machine body, an operation stay provided rotatably in the left-right direction with respect to the support stay, A support member extending outwardly from the operation stay, and when the seedling carrier is supported by the support member, the operation stay includes a rotation fulcrum portion that serves as a rotation fulcrum of the seedling conveyance table, and the rotation A rotation operation unit provided in front of the fulcrum unit and operated when rotating the seedling carrier, and is in a predetermined rotation posture between the rotation operation unit and the rotation fulcrum unit. By receiving the load of the seedling carrier from below, the posture of the seedling carrier Characterized in that a posture holding aid means for assisting the lifting.

  According to the first aspect of the present invention, there is provided posture holding assisting means for receiving the load of the seedling conveyance table in a predetermined rotation posture from below while allowing the seedling conveyance table to be rotated in the left-right direction. Therefore, the load acting on the rotation fulcrum portion can be reduced, and the rotation fulcrum portion can be reduced in size and cost. In addition, since the posture holding auxiliary means can be configured compactly between the rotation operation part and the rotation fulcrum part, for example, in a transplanting machine in which a fertilizer tank is arranged below the seedling carrier, the posture holding auxiliary means is a fertilizer. It is possible to prevent the supply from being hindered.

It is a whole side view of a riding type rice transplanter. It is a whole top view of a riding type rice transplanter. It is the whole top view of the riding type rice transplanter which shows the state which rotated the seedling conveyance stand. It is a principal part side view of a riding type rice transplanter. It is a perspective view which shows the rotation fulcrum part of a seedling conveyance stand. It is a principal part front view of riding type rice transplanter. It is a principal part front view of the riding type rice transplanter which shows the state which rotated the seedling conveyance stand.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. First, the configuration and operation common to Patent Document 2 will be described, and then the configuration and operation unique to the present invention will be described.

  1 to 3, reference numeral 1 denotes a riding type rice transplanter (transplanting machine) having an eight-row planting specification, and the riding type rice transplanter 1 has a traveling machine body 4 supported by a front wheel 2 and a rear wheel 3. An engine mounting portion 5 for mounting an engine (not shown) is formed at the front portion of the traveling machine body 4. A fertilizer tank 6 for storing paste fertilizer is provided on each of the left and right outer portions of the engine mounting portion 5, and a seedling carrier 7, which will be described later, along the front-rear direction above each fertilizer tank 6. Is arranged.

  In the upper part of the fertilizer tank 6, a supply port 6a for supplying paste fertilizer is formed, and a supply port cover 6b for opening and closing the supply port 6a is provided. The replenishing port cover 6b is rotatably provided with the rear end as a fulcrum, and the replenishing port 6a is opened by rotating the replenishing port cover 6b upward and rearward.

  In addition, a control unit 8 on which an operator gets on the rear of the engine mounting unit 5 is configured. The control unit 8 includes a steering handle 9, a driver seat 10, and the like, and a floor step 11 that forms a floor surface of the control unit 8 is provided in front of and below the driver seat 10.

  The floor step 11 is connected to a front step 12 provided on the left and right outer portions of the engine mounting portion 5 and a wide step 13 that expands the left and right width of the floor step 11. By going through 13, it is possible to get into the control unit 8 from either the front or side of the aircraft.

  On the other hand, a planting work machine 15 is connected to the rear part of the traveling machine body 4 via a lifting link mechanism 14 so as to be lifted and lowered. The planting work machine 15 includes a seedling stage 16 which is inclined in a low shape before and after the height, a planting mechanism 17 for scraping seedlings from the seedling stage 16 and planting them in a field, and fertilizer in the soil simultaneously with planting seedlings. It comprises a fertilizing nozzle 18 for discharging.

  Further, a rear step 19 and a rear wide step 20 that extends the left and right widths are provided at the rear part of the traveling machine body 4, and an operator stands on the rear step 19 and the rear wide step 20 and seedlings. A preliminary seedling can be supplied to the mounting table 16.

  Next, the seedling carrier 7 will be described in detail. As shown in FIGS. 1-3, the seedling conveyance stand 7 is arrange | positioned in the left-and-right both outer side part of the traveling body 4 (engine mounting part 5) in the form which overlaps with the fertilizer tank 6 in top view, The front end portion is located in front of the traveling machine body 4, and the rear end portion is located beside the driver seat 10.

  The seedling carrier 7 is composed of a rectangular roller conveyor that rotatably supports a plurality of rollers 21 between the left and right side frames, and conveys the spare seedlings in a self-propelled manner along a front, rear, and lower slope. It is configured. Moreover, the seedling conveyance stand 7 of this embodiment is divided and formed into a front seedling conveyance stand 7F, an intermediate seedling conveyance stand 7M, and a rear seedling conveyance stand 7R. These seedling transfer stands 7F, 7M, and 7R are connected via hinges 22 and 23, respectively. When not in operation, the rear seedling transfer stand 7R and the front seedling transfer stand 7F are located above the intermediate seedling transfer stand 7M. Can be stored in a folded shape.

  In addition, when the seedling conveyance stand 7 conveys the preliminary seedling from the front side to the rear side of the traveling machine body 4, the front seedling conveyance stand 7F and the rear seedling conveyance stand 7R are moved forward and backward with respect to the intermediate seedling conveyance stand 7M. The extended posture is used, that is, the front seedling transfer stand 7F extends from the intermediate seedling transfer stand 7M to the front side of the machine body, and the rear seedling transfer stand 7R extends from the intermediate seedling transfer stage 7M to the rear side of the machine body. . In the present embodiment, when simply referred to as the seedling transport base 7, it means the seedling transport base 7 in the extended posture.

  Next, the attachment part of the seedling carrier 7 will be described. As shown in FIGS. 1 to 7, the attachment part of the seedling carrier 7 is provided with a support stay 24 provided on the outer side of the traveling machine body 4 and an operation provided to be rotatable in the left-right direction with respect to the support stay 24. A stay 25 and a support member 26 extending outward from the operation stay 25 are provided, and the seedling carrier 7 is attached to the support member 26.

  The support stay 24 is formed in a square shape in a side view, and a lower end side is fixed to the body frame, and a substantially U-shaped rotation support bracket 27 is welded to the upper end side. A rotation fulcrum pipe (rotation fulcrum part) 28 is provided between the upper plate part 27 a and the lower plate part 27 b of the rotation support bracket 27, and an operation stay 25 is provided on the rotation fulcrum pipe 28. A rotation fulcrum shaft (rotation fulcrum portion) 29 protruding downward from the rear end portion is rotatably inserted and secured by a retaining fitting 30.

  The rotation fulcrum shaft 29 is arranged on the rear side of the center of the seedling carrier 7 in the front-rear direction. If it does in this way, when rotating the seedling conveyance stand 7 in the left-right direction, the front end side (the heel side) where the assistant supplies the spare seedling while suppressing the amount of rotation on the rear end side where the worker receives the spare seedling. Therefore, the position adjustment range on the heel side can be secured widely.

  Further, the upper plate portion 27 a of the rotation support bracket 27 is provided with a long hole 27 c that is curved concentrically around the rotation fulcrum shaft 29. On the other hand, a guide pin 31 inserted into the long hole 27c is provided at the rear end portion of the operation stay 25. The guide pin 31 comes into contact with the end edge portion of the long hole 27c, so that the seedling carrier 7 A horizontal rotation range is defined.

  Further, the upper plate portion 27a of the rotation support bracket 27 has three lock holes 27d arranged on the circumference centering on the rotation fulcrum shaft 29, and a lock pin 32 provided on the operation stay 25 side is provided with each lock. By selectively inserting into the hole 27d, the rotation position of the seedling carrier 7 is a standard position parallel to the traveling machine body 4 (see FIG. 2), and the inward rotation position where the tip side is rotated inward of the machine body. (Not shown), the tip end side is configured to be positioned at each of the outward rotation positions (see FIG. 3) rotated outward from the machine body. The lock pin 32 is provided on a lock pin bracket 33 provided at the rear end portion of the operation stay 25 so as to be movable up and down, and is always urged by the coil spring 34 toward the lock hole 27d.

  The operation stay 25 includes a front rotation operation unit (rotation operation unit) 35 for rotating the seedling carrier 7 from the front side of the machine body (the side of the heel). The front rotation operation unit 35 of the present embodiment includes a grip 36 that extends downward from the front end of the operation stay 25 and a front operation lever 37a of a lock pin operation tool 37 that operates the lock pin 32. Has been.

  The lock pin operating tool 37 is rotatably supported by lever support pieces 38 and 39 provided at the front end portion and the rear end portion of the operation stay 25. The front operation lever 37a described above is formed at the front end of the lock pin operating tool 37, while the rear operation lever 37b for rotating the seedling carrier 7 from the rear of the machine body is formed at the rear end. Furthermore, an engagement arm 37c that engages with the lock pin 32 is provided in the intermediate portion.

  When the front operation lever 37a or the rear operation lever 37b is turned to the inside of the machine body, the engagement arm 37c resists the urging force of the coil spring 34 and pulls out the lock pin 32 from the lock hole 27d. Rotation operation in the left-right direction is allowed. Further, after the seedling carrier 7 is rotated to any position (any one of the three positions described above) and then released from the front operation lever 37a or the rear operation lever 37b, it is locked by the urging force of the coil spring 34. The pin 32 is inserted into the predetermined lock hole 27d, and the rotation operation of the seedling carrier 7 is restricted at a predetermined rotation position.

  Next, the effect | action of the riding type rice transplanter 1 provided with the seedling conveyance stand 7 is demonstrated. The operator places the seedling on the seedling placing table 16 and starts planting in a state where the spare seedling is placed on the seedling transporting stand 7 in the extended or folded posture. During planting, the planting mechanism 17 scrapes the seedlings placed on the seedling mounting table 16 to plant them in the field, and the paste fertilizer stored in the fertilizer tank 6 is discharged from the fertilizer nozzle 18 into the soil. .

  When the number of seedlings placed on the seedling stage 16 is reduced, the operator first replenishes the seedling stage 16 with the spare seedlings placed on the seedling carrier stage 7, but if the seedlings still run short, The traveling machine body 4 is brought close to the heel with the transfer table 7 extended.

  In the case of a leveled rectangular farm field, the operator stops the traveling machine body 4 perpendicular to the heel-side track. On the other hand, the assistant on the heel side supplies the spare seedling from the front end of the seedling transport stand 7 at the standard position. The seedlings supplied to the seedling transport stand 7 are self-propelled along the inclination of the seedling transport stand 7 toward the rear side of the machine body and come into contact with the rear end portion of the seedling transport stand 7 and stop. Then, the worker can receive the spare seedling supplied on the rear step 19 or the rear wide step 20 and replenish the seedling mounting table 16 to resume the planting work.

  On the other hand, when the assistant is at the edge of the triangular field, or when the traveling machine body 4 is stopped with respect to the shore-side track, the assistant pushes the front operation lever 37a of the front rotation operation unit 35. After operating and removing the lock pin 32 from the lock hole 27d, the seedling transport base 7 is changed from the standard position to the inward rotation position or the outward rotation position, and the front end position of the seedling transport base 7 is adjusted.

  Moreover, also when supplying the paste fertilizer to the fertilizer tank 6, it is preferable to make the seedling conveyance stand 7 into an outward rotation position. That is, as shown in FIG. 3, in this rotating position, the upper portion of the fertilizer tank 6 (supply port 6a) is in an open state, so when pouring paste fertilizer into the supply port 6a using a bucket or the like, It can prevent that the seedling conveyance stand 7 becomes obstructive.

  Next, the configuration and operation unique to the present invention will be described. The riding type rice transplanter 1 according to the embodiment of the present invention receives the load of the seedling carrier 7 in a predetermined rotation posture (in this embodiment, a standard position parallel to the traveling machine body 4) from below, Posture holding assisting means 40 for assisting the posture holding of the seedling carrier 7 is provided. In this way, the load of the seedling carrier 7 in a predetermined rotational posture can be received from below while the seedling carrier 7 can be rotated in the left-right direction. The load acting on the parts (the rotation fulcrum pipe 28 and the rotation fulcrum shaft 29) is reduced, and the rotation fulcrum part can be reduced in size and cost. In addition, the posture retention assisting means 40 of the present embodiment receives the load of the seedling carrier 7 at the standard position that is the most frequently used rotation position, and thus the above-described effect becomes remarkable.

  If it demonstrates concretely, the attitude | position holding assistance means 40 of this embodiment is provided with the roller 41 and the plate 42, and is comprised. The roller 41 is rotatably provided to the roller bracket 43 protruding from the operation stay 25 via a roller shaft 44 facing in the front-rear direction, while the plate 42 is a plate bracket 45 protruding from the support stay 24. On the other hand, a pair of left and right bolts 46 and nuts 47 are provided. When the seedling transport base 7 is in a predetermined rotation posture (standard position), the roller 41 rides on the plate 42, so that the load of the seedling transport base 7 can be received at a position other than the rotational fulcrum portion. It can be done. Further, by configuring the posture holding assisting means 40 using the roller 41, there is also an advantage that the smooth rotation of the seedling transport base 7 is not hindered.

  Further, a concave portion 42a that is slightly recessed is formed at the upper end of the plate 42 on which the roller 41 rides, and the roller 41 can be dropped here. If it does in this way, when rotating seedling conveyance stand 7 from other rotation positions to a standard position, not only becomes easy to understand a standard position but it becomes possible to control play of seedling conveyance stand 7 in a standard position. Become.

  The plate 42 is preferably adjustable in the vertical position. For example, if the hole portion of the plate 42 or the plate bracket 45 through which the bolt 46 passes is a long hole extending in the vertical direction, the vertical position of the plate 42 can be adjusted. In this way, since the vertical position of the plate 42 can be adjusted according to the vertical position of the roller 41, there is an advantage that the roller 41 can be smoothly run on the plate 42.

  Next, the arrangement of the posture holding auxiliary means 40 will be described. As shown in FIG. 4, the posture holding auxiliary means 40 is disposed between the front side rotation operation unit 35 and the rotation fulcrum shaft 29. If it does in this way, it will become possible to comprise posture maintenance auxiliary means 40 compactly using the space between rotation operation part 35 and rotation fulcrum shaft 29. Further, the rotation fulcrum shaft 29 of the present embodiment is provided on the rear side of the center of gravity of the seedling carrier 7, and a load biased forward is applied. This load is provided on the front side of the rotation fulcrum shaft 29. The posture holding assisting means 40 can be reliably received.

  Moreover, it is preferable to arrange | position the attitude | position support auxiliary | assistance means 40 behind the rear end of the supply port 6a of the fertilizer tank 6, and the supply port cover 6b. That is, if the posture holding assisting means 40 is in front of the rear ends of the replenishing port 6a and the replenishing port cover 6b, the posture holding assisting means 40 may interfere with the fertilizer replenishment of the fertilizer tank 6. FIG. As shown in FIG. 7, if the posture holding assisting device 40 is disposed behind the rear ends of the supply port 6 a and the supply port cover 6 b, the supply port 6 a even if the supply port cover 6 b interferes with the roller 41. Can be kept open and fertilizer can be replenished without problems.

  According to the present embodiment configured as described, the seedling transport base 7 for transporting the preliminary seedling from the front side to the rear side of the traveling machine body 4 is provided, and the seedling transport base 7 can be rotated in the left-right direction. In the riding type rice transplanter 1, the support stay 24 provided on the outer side of the traveling machine body 4, the operation stay 25 provided so as to be rotatable in the left-right direction with respect to the support stay 24, and the outside from the operation stay 25. The support stay 26 supports the seedling carrier 7 with the support member 26, and the operation stay 25 includes a rotation fulcrum shaft 29 serving as a rotation fulcrum of the seedling carrier 7, A rotation operation unit 35 that is provided in front of the movement fulcrum shaft 29 and is operated when the seedling carrier 7 is rotated. A predetermined amount is provided between the rotation operation unit 35 and the rotation fulcrum shaft 29. By receiving the load of the seedling carrier 7 in the rotating posture from below Since the posture holding assisting means 40 for assisting the posture holding of the seedling carrier 7 is provided, the load acting on the rotation fulcrum can be reduced while the seedling carrier 7 can be rotated in the left-right direction. Therefore, it is possible to reduce the size and cost of the pivot point. In addition, since the posture holding auxiliary means 40 can be configured compactly between the rotation operation unit 35 and the rotation fulcrum shaft 29, the posture holding can be maintained when the fertilizer is replenished in the fertilizer tank 6 disposed below the seedling carrier 7. The auxiliary means 40 can be prevented from getting in the way.

DESCRIPTION OF SYMBOLS 1 Riding type rice transplanter 4 Traveling machine body 6 Fertilizer tank 6a Supply port 6b Supply port cover 7 Seedling conveyance stand 15 Planting work machine 18 Fertilization nozzle 24 Support stay 25 Operation stay 26 Support member 28 Rotation fulcrum pipe 29 Rotation fulcrum shaft 32 Lock pin 35 Front rotation operation portion 37 Lock pin operation tool 37a Front operation lever 37b Rear operation lever 40 Posture holding auxiliary means 41 Roller 42 Plate

Claims (1)

In the transplanting machine provided with a seedling transport stand for transporting the preliminary seedling from the front side to the rear side of the traveling machine body, and capable of rotating the seedling transport stand in the left-right direction,
A support stay provided on an outer side of the traveling machine body;
An operation stay provided to be rotatable in the left-right direction with respect to the support stay;
A support member extending outward from the operation stay,
In supporting the seedling carrier with the support member,
The operation stay is
A rotation fulcrum part that becomes a rotation fulcrum of the seedling carrier,
A rotation operation unit provided in front of the rotation fulcrum unit and operated when rotating the seedling carrier;
Between the turning operation part and the turning fulcrum part, posture holding assisting means for assisting in holding the posture of the seedling carrying stand by receiving the load of the seedling carrying stand in a predetermined turning posture from below is provided. A transplanter characterized by that.

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