JP2021170966A - Work vehicle - Google Patents

Abstract

To provide a seedling transplanter 1 for improving planting accuracy of pot seedlings.SOLUTION: A work vehicle according to one aspect of an embodiment includes a traveling car body, a fertilizer hopper, a delivery mechanism, a placement rack and a changeover mechanism. The fertilizer hopper is provided on the traveling car body and stores fertilizers. The delivery mechanism delivers the fertilizers stored in the fertilizer hopper. The placement rack can be disposed on the upper side of the fertilizer hopper. The changeover mechanism changes over a position of the placement rack between a placement position on which work materials can be placed, the position on the upper side of the fertilizer hopper, and a storage position, the position at a lateral side of the fertilizer hopper.SELECTED DRAWING: Figure 5

Description

The present invention relates to a work vehicle.

Conventionally, some work vehicles for planting seedlings in a field have a fertilizer application device for supplying fertilizer to the field (see, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2016-10373

However, in the above-mentioned work vehicle, since the fertilizer application device is provided, the work space on the work vehicle is narrowed.

The present invention has been made in view of the above, and an object of the present invention is to provide a work vehicle that widens a work space on the work vehicle.

In order to solve the above-mentioned problems and achieve the object, the work vehicle according to one aspect of the embodiment is stored in a traveling vehicle body, a fertilizer hopper provided in the traveling vehicle body and storing fertilizer, and the fertilizer hopper. The feeding mechanism for feeding the fertilizer, the mounting table that can be placed above the fertilizer hopper, and the above-mentioned stand are located above the fertilizer hopper and can be placed with work materials. It is provided with a switching mechanism for switching to a storage position which is a side position of the fertilizer hopper.

According to one aspect of the embodiment, the work space on the work vehicle can be widened.

FIG. 1 is a side view of the seedling transplanting machine according to the embodiment. FIG. 2 is a plan view in which a part of the seedling transplanting machine according to the embodiment is omitted. FIG. 3 is a plan view of the vicinity of the fertilizer application device according to the embodiment. FIG. 4 is a side view of the vicinity of the fertilizer application device according to the embodiment. FIG. 5 is a rear view of the vicinity of the fertilizer application device according to the embodiment as viewed from the rear. FIG. 6 is a schematic view showing a mounting table according to a modified example. FIG. 7 is a schematic view showing a mounting table according to a modified example. FIG. 8 is a schematic side view of the seedling transplanting machine according to the modified example. FIG. 9 is a schematic plan view of the seedling transplanting machine according to the modified example. FIG. 10 is a schematic side view of the seedling transplanting machine according to the modified example. FIG. 11 is a schematic plan view of the seedling transplanting machine according to the modified example. FIG. 12 is a schematic view showing a state in which the fertilizer hopper according to the modified example is rotated forward.

Hereinafter, embodiments of the work vehicle disclosed in the present application will be described in detail with reference to the accompanying drawings. The present invention is not limited to the embodiments shown below. In the following, a seedling transplanter for planting seedlings in a field will be described as an example of a work vehicle.

In the following description, the front-rear direction is the traveling direction when the seedling transplanting machine goes straight, and the front side of the traveling direction is defined as "front" and the rear side is defined as "rear". The traveling direction of the seedling transplanter is the direction from the cockpit to the steering wheel when going straight.

The left-right direction is a direction that is horizontally orthogonal to the front-back direction, and defines left-right toward the "front" side. That is, when the operator (also referred to as an operator) is seated in the driver's seat and faces forward, the left hand side is "left" and the right hand side is "right".

The vertical direction is the vertical direction. The front-back direction, the left-right direction, and the up-down direction are orthogonal to each other. Each direction is defined for convenience of explanation, and the present invention is not limited to these directions.

The seedling transplanting machine 1 according to the embodiment will be described with reference to FIGS. 1 and 2. FIG. 1 is a side view of the seedling transplanting machine 1 according to the embodiment. FIG. 2 is a plan view in which a part of the seedling transplanting machine 1 according to the embodiment is omitted. In the seedling transplanting machine 1, the seedling planting portion 4 is mounted on the rear side of the traveling vehicle body 2 so as to be able to move up and down via an elevating link mechanism 3. The main body portion of the fertilizer application device 5 is provided on the upper rear side of the traveling vehicle body 2.

The traveling vehicle body 2 is a four-wheel drive vehicle including a pair of left and right front wheels 10 and a pair of left and right rear wheels 11, which are driving wheels. An engine is mounted on the main frame 12 of the traveling vehicle body 2. The rotation generated by the engine is changed by a hydrostatic continuously variable transmission called HST. The rotational power generated by the shifted rotation is separated into a traveling power and an external extraction power and taken out. The traveling power is transmitted to the front wheels 10 and the rear wheels 11. The external extraction power is transmitted to the seedling planting section 4 and also to the fertilizer application device 5.

The engine is housed in the engine cover 15. A driver's seat is provided on the upper part of the engine cover 15. A front cover 17 incorporating various operation mechanisms is provided in front of the driver's seat. A pair of spare seedling frames 20 for carrying seedlings for replenishment are provided on the left and right sides of the front cover 17. A handle 21 for operating the front wheel 10 is provided on the upper portion of the front cover 17.

Horizontal floor steps 25 are provided on both the left and right sides of the lower ends of the engine cover 15 and the front cover 17. A part of the floor step 25 has a grid pattern, and for example, mud adhering to the worker's shoes can be dropped onto the field. Auxiliary steps 27 provided lower than the upper surface of the floor step 25 are provided at both left and right ends of the floor step 25. According to the auxiliary step 27, it is possible to facilitate the worker getting on and off the seedling transplanting machine 1.

The elevating link mechanism 3 is a parallel link mechanism and has an upper link 30 and a lower link 31. The upper link 30 and the tip end side of the lower link 31 are rotatably supported by the gate-shaped link base frame 32 in the vertical direction in a rear view erected at the rear end of the main frame 12. Further, a vertical link 33 is connected to the rear end side of the upper link 30 and the lower link 31. A connecting shaft 34 that is rotatably supported by the seedling planting portion 4 and extends in the front-rear direction of the traveling vehicle body 2 is connected to the lower end portion of the vertical link 33. The seedling planting portion 4 is provided so as to be rollable around the connecting shaft 34.

The seedling planting section 4 includes a seedling placing section 40 and a seedling planting device 41. The seedling placement section 40 places mat seedlings and reciprocates in the left-right direction to supply seedlings one by one to the seedling outlet of each row, and a horizontal row of seedlings is supplied to the seedling outlet. And the seedling feeding belt 40a transfers the seedlings downward.

The seedling planting device 41 takes out the seedlings from the seedling placing portion 40 by the seedling planting tool provided so as to be rotatable, and plants the seedlings in the field.

At the lower part of the seedling planting portion 4, a center float 45 is provided in the center and side floats 46 are provided at both left and right ends. When the aircraft is advanced with the center float 45 and the side float 46 installed on the mud surface of the field, the center float 45 and the side float 46 slide on the mud surface and level the ground. The seedlings are planted by the seedling planting device 41 in such a leveled field scene. The center float 45 and the side float 46 are rotatably provided, for example, around a support shaft in the left-right direction so as to move up and down in response to the unevenness of the topsoil surface of the field.

The fertilizer application device 5 includes a fertilizer hopper 50, a feeding mechanism 51, and a blower 52. The fertilizer application device 5 conveys the fertilizer delivered from the fertilizer hopper 50 by the feeding mechanism 51 by the air blown out by the blower 52, and supplies the fertilizer to the field via the fertilizer application hose 53 or the like.

A pair of fertilizer hoppers 50 are provided in the left-right direction of the traveling vehicle body 2. Specifically, the fertilizer hopper 50 is provided at each of the left and right ends of the traveling vehicle body 2. The fertilizer hopper 50 stores fertilizer to be supplied to the field.

The fertilizer hopper 50 branches into four chambers in the front-rear direction on the lower side. An opening is formed at the bottom of each chamber. A pair of fertilizer hoppers 50 are arranged on the left and right sides, and the number of openings on the lower side is four. The lower opening is provided according to the number of rows of the seedling transplanting machine 1. The seedling transplanting machine 1 according to the present embodiment has an eight-row planting structure, and eight openings are formed in the pair of fertilizer hoppers 50. The fertilizer hopper 50 may be divided into four chambers. A feeding mechanism 51 is connected to each opening on the lower side.

The upper end of the fertilizer hopper 50 is open so that fertilizer can be poured from above. A lid 50a that can be opened and closed is attached to the upper end of the fertilizer hopper 50.

The lid portion 50a rotates about a rotation shaft provided on the outside of the fertilizer hopper 50. Specifically, the lid portion 50a rotates about a rotation shaft provided outside the fertilizer hopper 50 in the left-right direction.

The feeding mechanism 51 conveys the fertilizer in the fertilizer hopper 50 to the fertilizer application hose 53 provided below by rotating the feeding portion. A recess is formed in the feeding portion, and the fertilizer that has flowed into the recess is conveyed to the fertilizer application hose 53 as it rotates.

The blower 52 blows air to each fertilizer hose 53. The air blown to the fertilizer hose 53 pushes the fertilizer of the fertilizer hose 53 toward the field. This supplies fertilizer to the field. The fertilizer application hose 53 is provided so as to supply fertilizer to the front side of the seedling planting device 41.

The seedling transplanting machine 1 according to the embodiment includes a mounting table 60 that can be arranged above the fertilizer hopper 50. Next, the mounting table 60 will be described with reference to FIGS. 3 to 5. FIG. 3 is a plan view of the vicinity of the fertilizer application device 5 according to the embodiment. FIG. 4 is a side view of the vicinity of the fertilizer application device 5 according to the embodiment. FIG. 5 is a rear view of the vicinity of the fertilizer application device 5 according to the embodiment as viewed from the rear. 3 to 5 show the vicinity of the fertilizer application device 5 provided on the left side.

The mounting table 60 can mount fertilizer and work materials such as spare seedlings. The mounting table 60 is switched between a mounting position and a storage position by the switching mechanism 61. The placement position is a position above the fertilizer hopper 50, and is a position where work materials can be placed. The storage position is a position separated from the upper part of the fertilizer hopper 50, the mounting table 60 is stored, and the work material cannot be placed. The storage position is, for example, a position inside the fertilizer hopper 50 in the left-right direction. Specifically, the storage position is a position facing the side wall of the fertilizer hopper 50 which is inside in the left-right direction, and a position where the mounting table 60 is substantially parallel to the vertical direction. FIG. 5 shows a mounting position and a mounting table 60 at the storage position.

The mounting table 60 is formed so as to have substantially the same size as the opening of the fertilizer hopper 50 in a plan view. The mounting table 60 has a plate shape, and a plurality of holes 60a are formed. The holes 60a are formed, for example, in three rows in the front-rear direction and three rows in the left-right direction. A stopper 60b is formed at the end of the mounting table 60 to prevent the work material from falling. The mounting table 60 rotates about a rotation shaft provided on the outside of the fertilizer hopper 50. For example, the mounting table 60 rotates about a rotation shaft provided inside the fertilizer hopper 50. The mounting table 60 rotates about a rotation shaft provided inside the rotation shaft of the lid portion 50a in the left-right direction.

The mounting table 60 rotates in a direction different from the rotation direction of the lid portion 50a of the fertilizer hopper 50. Specifically, the lid portion 50a rotates about the rotation axis outside the fertilizer hopper 50 in the left-right direction, and the mounting table 60 is centered on the rotation axis inside the fertilizer hopper 50 in the left-right direction. Rotates to. That is, the mounting table 60 and the lid portion 50a rotate around the rotation shafts provided in different directions with respect to the fertilizer hopper 50.

The switching mechanism 61 includes a support frame 62, a support arm 63, and a connecting portion 64. The support frame 62 is, for example, a metal pipe. The support frame 62 is formed in a substantially U shape. The support frame 62 includes a first member 62a to which the mounting table 60 is attached, a second member 62b extending downward from one end of the first member 62a, and a third member 62c extending downward from the other end of the first member 62a. Be prepared.

The first member 62a is provided so as to extend in the front-rear direction. The first member 62a is provided inside the fertilizer hopper 50 in the left-right direction. The first member 62a is provided above the fertilizer hopper 50. Specifically, the first member 62a is provided above the rotation axis of the lid portion 50a of the fertilizer hopper 50. A gap is provided between the mounting table 60 and the first member 62a so that the operator can insert his / her hand.

The second member 62b extends downward from the front end of the first member 62a. The second member 62b is provided in front of the fertilizer hopper 50. The second member 62b is provided with a handrail 62d. The handrail 62d is gripped by the operator when the operator gets on and off.

The third member 62c extends downward from the rear end of the first member 62a. The third member 62c is provided behind the fertilizer hopper 50.

The second member 62b and the third member 62c are formed so that the upper end side bends inward in the left-right direction.

The support arm 63 is provided so as to extend in the left-right direction. Two support arms 63 are provided side by side in the front-rear direction. The support arm 63 is rotatably attached to the first member 62a of the support frame 62 by the connecting portion 64. A mounting base 60 is attached to the support arm 63. That is, the mounting table 60 is rotatably attached to the first member 62a of the support frame 62 via the support arm 63 and the connecting portion 64.

The support arm 63 is formed in a substantially L shape. A hole is formed in the base end portion 63a of the support arm 63. The rotation shaft portion 65 is inserted into the hole in the front-rear direction.

When the mounting table 60 is rotated, the base end portion 63a of the support arm 63 abuts on the first member 62a and holds the mounting table 60 in the mounting position or the storage position. That is, the base end portion 63a of the support arm 63 also functions as a stopper that restricts the rotation of the mounting table 60 to the mounting position or the storage position. Specifically, when the mounting table 60 is in the storage position, one side 63b of the base end portion 63a of the support arm 63 comes into contact with the first member 62a. When the mounting table 60 is in the mounting position, the other side 63c of the base end portion 63a of the support arm 63 on the side opposite to the one side 63b comes into contact with the first member 62a.

The connecting portion 64 is attached to the first member 62a. The connecting portion 64 rotatably supports the support arm 63. The connecting portion 64 is provided so as to project upward from the first member 62a. A hole is formed in the connecting portion 64. The rotation shaft portion 65 is inserted into the hole in the front-rear direction. The rotating shaft portion 65 is provided with a head portion 65a that abuts on the connecting portion 64 at one end, and a hole 65b is formed at the other end into which a pin for preventing disconnection is inserted.

Next, the operation of the mounting table 60 will be described.

The mounting table 60 can be switched between a mounting position and a storage position. In the storage position, one side 63b of the base end portion 63a of the support arm 63 abuts on the first member 62a of the support frame 62, so that the position of the mounting table 60 is held. At the mounting position, work materials such as seedlings and fertilizer can be mounted on the mounting table 60.

The mounting table 60 can be rotated regardless of whether the lid portion 50a of the fertilizer hopper 50 is open or closed, and the position of the mounting table 60 can be changed from the storage position to the mounting position. At the mounting position, the position of the mounting table 60 is maintained by the other side 63c, which is the side opposite to the one side 63b, coming into contact with the first member 62a.

When the mounting table 60 is rotated from the storage position to the mounting position with the lid 50a of the fertilizer hopper 50 closed, the rotation axis of the mounting table 60 is located above the fertilizer hopper 50 and is supported. The other side 63c of the base end portion 63a of the arm 63 comes into contact with the first member 62a. As a result, the mounting table 60 is located above the lid portion 50a of the fertilizer hopper 50.

Further, when the mounting table 60 is rotated from the storage position to the mounting position with the lid portion 50a of the fertilizer hopper 50 open, the other side 63c of the base end portion 63a of the support arm 63 becomes the first member 62a. Contact. As a result, the mounting table 60 is located above the opening of the fertilizer hopper 50. The tip of the mounting table 60 is located inside the lid portion 50a of the fertilizer hopper 50. Therefore, when the lid portion 50a of the fertilizer hopper 50 rotates in the closing direction, the tip of the mounting table 60 comes into contact with the lid portion 50a of the fertilizer hopper 50, and the rotation of the lid portion 50a of the fertilizer hopper 50 is restricted. NS. That is, the lid portion 50a of the fertilizer hopper 50 is held in an open state.

For example, when the mounting table 60 is in the mounting position with the lid 50a of the fertilizer hopper 50 open, a spare fertilizer bag is placed on the mounting table 60. When replenishing fertilizer to the fertilizer hopper 50, the fertilizer bag placed on the mounting table 60 is opened, and when fertilizer is poured into the mounting table 60 from the fertilizer bag, the fertilizer is fertilized from the hole 60a formed in the mounting table 60. Fall into the fertilizer hopper 50. In this way, it becomes easy to replenish the fertilizer hopper 50 with fertilizer.

The seedling transplanting machine 1 according to the embodiment includes a traveling vehicle body 2, a fertilizer hopper 50, a feeding mechanism 51, a mounting table 60, and a switching mechanism 61. The fertilizer hopper 50 is provided on the traveling vehicle body 2 and stores fertilizer. The feeding mechanism 51 feeds out the fertilizer stored in the fertilizer hopper 50. The mounting table 60 can be arranged above the fertilizer hopper 50. The switching mechanism 61 switches the mounting table 60 between a mounting position above the fertilizer hopper 50 and on which work materials can be placed and a storage position on the side of the fertilizer hopper 50.

As a result, the seedling transplanting machine 1 can arrange the mounting table 60 at the mounting position above the fertilizer hopper 50 and load the work material on the mounting table 60. Further, in the seedling transplanting machine 1, when the work material is not placed on the mounting table 60, the mounting table 60 can be stored in the storage position. Therefore, the seedling transplanting machine 1 can secure a working space depending on whether or not the working material is placed. That is, the seedling transplanting machine 1 can widen the work space on the seedling transplanting machine 1. Further, the seedling transplanting machine 1 can change the working space according to the working state, and can improve the workability.

The fertilizer hopper 50 is provided at each of the left and right ends of the traveling vehicle body 2.

As a result, the work space can be further widened in the seedling transplanting machine 1 provided with the fertilizer hoppers 50 at the left and right ends.

The fertilizer hopper 50 includes a lid portion 50a that can open and close the opening provided at the upper end. The mounting table 60 is held in the mounting position in a state where the lid portion 50a is open.

As a result, the seedling transplanting machine 1 can place the work material on the mounting table 60 with the lid portion 50a of the fertilizer hopper 50 open. Therefore, for example, when the fertilizer bag is placed on the mounting table 60 with the lid 50a of the fertilizer hopper 50 open, the work is performed, and the fertilizer hopper 50 is replenished with fertilizer, the lid 50a of the fertilizer hopper 50 The fertilizer hopper 50 can be replenished with fertilizer without opening and closing. That is, the seedling transplanting machine 1 can improve workability.

The mounting table 60 is switched between a mounting position and a storage position by being rotated. The mounting table 60 rotates in a direction different from the rotation direction of the lid portion 50a.

As a result, the seedling transplanting machine 1 can rotate the mounting table 60 to switch the mounting table 60 to the mounting position or the storage position regardless of the open / closed state of the lid portion 50a.

The mounting table 60 restricts the lid portion 50a from rotating in the closing direction at the mounting position when the lid portion 50a is in the open state.

As a result, the seedling transplanting machine 1 can prevent the lid portion 50a from closing when the mounting table 60 is in the mounting position. Therefore, for example, contact between the lid portion 50a and the work material placed on the mounting table 60 can be suppressed.

The rotation shaft of the mounting table 60 is provided on the outside of the fertilizer hopper 50 in a plan view.

As a result, the seedling transplanting machine 1 can prevent the mounting table 60 from coming into contact with the fertilizer hopper 50 when the mounting table 60 is in the storage position, and deteriorates the mounting table 60 and the fertilizer hopper 50. It can be suppressed. Further, in the seedling transplanting machine 1, when the mounting table 60 is in the storage position, for example, the mounting table 60 can be suppressed from protruding in the left-right direction, and the storage space of the mounting table 60 can be reduced.

A plurality of holes 60a are formed in the mounting table 60.

As a result, for example, when the lid 50a of the fertilizer hopper 50 is open and the mounting table 60 is in the mounting position, the fertilizer can be passed through the holes 60a by pouring the fertilizer into the mounting table 60. The fertilizer hopper 50 is replenished. That is, the worker can easily replenish the fertilizer, and the seedling transplanting machine 1 can improve the workability of the fertilizer replenishment.

In the seedling transplanting machine 1 according to the modified example, the mounting table 60 may rotate about a rotation shaft provided along the left-right direction.

In the seedling transplanting machine 1 according to the modified example, the lid portion 50a of the fertilizer hopper 50 may rotate about a rotation shaft provided inside the fertilizer hopper 50 in the left-right direction. Further, in the seedling transplanting machine 1 according to the modified example, the mounting table 60 may rotate about a rotation axis provided outside the fertilizer hopper 50 in the left-right direction.

The seedling transplanting machine 1 according to the modified example may have the following configuration and the like.

As shown in FIG. 6, the seedling transplanting machine 1 may have a mounting table 60 having a substantially L-shape. FIG. 6 is a schematic view showing a mounting table 60 according to a modified example. The mounting table 60 mounts the fertilizer bag 100, which is a work material, at a position lateral to the fertilizer hopper 50, and allows fertilizer to be put into the fertilizer hopper 50 at a position above the fertilizer hopper 50. The operator can replenish the fertilizer hopper 50 from the fertilizer bag by rotating the mounting table 60 upward from the fertilizer bag placed in the lateral position. The worker can easily replenish the fertilizer hopper 50 with fertilizer.

As shown in FIG. 7, the seedling transplanting machine 1 may be provided with a plurality of stages, for example, two stages of the mounting table 70 in the vertical direction. FIG. 7 is a schematic view showing a mounting table 70 according to a modified example. The mounting table 70 rotates in the horizontal direction around a shaft portion 71 provided along the vertical direction.

As a result, the seedling transplanting machine 1 can increase the number of work materials that can be placed on the mounting table 70. Further, for example, the worker can easily carry out the transport work when the work material is placed on the seedling transplanting machine 1 from outside the field.

As shown in FIGS. 8 and 9, the seedling transplanting machine 1 includes a fertilizer hopper 80 extending in the left-right direction behind the traveling vehicle body 2. FIG. 8 is a schematic side view of the seedling transplanting machine 1 according to the modified example. FIG. 9 is a schematic plan view of the seedling transplanting machine 1 according to the modified example. A pair of fertilizer hoppers 80 may be provided in the left-right direction of the traveling vehicle body 2. The seedling transplanting machine 1 includes a sub hopper 81 below the spare seedling frame 20. The sub hopper 81 is attached to the front end side of the rotating member 82 extending in the front-rear direction. The rear end of the rotating member 82 is supported by the traveling vehicle body 2 so as to be rotatable. That is, the rotating member 82 and the sub hopper 81 rotate in the front-rear direction around the rear end of the rotating member 82.

The sub hopper 81 is a tank for storing fertilizer to be replenished in the fertilizer hopper 50. In the sub hopper 81, a supply port 81a for feeding fertilizer into the sub hopper 81 is formed forward. The supply port 81a is formed so as to open diagonally upward, for example. This facilitates the injection of fertilizer into the sub hopper 81. Further, in the sub hopper 81, a discharge port 81b for replenishing the fertilizer hopper 50 with fertilizer is formed rearward. The discharge port 81b is formed on the upper rear side.

The discharge port 81b of the rotating member 82 and the sub hopper 81 is provided so that the discharge port 81b of the sub hopper 81 is located above the fertilizer hopper 50 when the rotating member 82 and the sub hopper 81 rotate backward. Be done.

The spare seedling frame 20 is rotatable in the horizontal direction around the support member 20a extending in the vertical direction.

In the seedling transplanting machine 1, when fertilizer is replenished from the sub hopper 81 to the fertilizer hopper 50, the spare seedling frame 20 is rotated. In FIG. 9, the spare seedling frame 20 after rotation is shown by a broken line. Specifically, the spare seedling frame is rotated forward and retracted from above the sub hopper 81. Next, the rotating member 82 and the sub hopper 81 are rotated rearward. As a result, fertilizer is poured into the fertilizer hopper 50 from the discharge port 81b of the sub hopper 81, and the fertilizer is replenished.

Since the supply port 81a is formed so as to face diagonally upward, it is possible to suppress excessive storage of fertilizer in the sub hopper 81, and the sub hopper 81 is rotated rearward to fertilize the fertilizer hopper 50. When replenishing the fertilizer, it is possible to prevent the fertilizer from overflowing from the replenishment port 81a. The replenishment port 81a is provided with a lid, but it is possible to prevent the fertilizer from overflowing from the replenishment port 81a when the lid is forgotten to be closed or the lid is loosely closed.

By providing the sub hopper 81 below the spare seedling frame 20, the operator can easily get on and off from the side of the traveling vehicle body 2, and the work when the work is performed on the rear side of the traveling vehicle body 2 becomes easy. Further, the operator can replenish the fertilizer hopper 50 from the sub hopper 81 by rotating the rotating member 82 and the sub hopper 81 rearward, and the fertilizer can be easily replenished.

As shown in FIGS. 10 and 11, the seedling transplanting machine 1 may include a fertilizer application device 85 below the seedling planting section 4. FIG. 10 is a schematic side view of the seedling transplanting machine 1 according to the modified example. FIG. 11 is a schematic plan view of the seedling transplanting machine 1 according to the modified example.

The fertilizer hopper 86 is provided below the seedling placing portion 40 of the seedling planting portion 4. The fertilizer hopper 86 is provided along the seedling placing portion 40. The fertilizer hopper 86 is provided so that the length in the front-rear direction becomes shorter from the upper side to the lower side. The fertilizer hopper 86 is provided with an opening at the upper end, and the opening can be opened and closed by the lid portion 86a. The lid portion 86a is provided so that the upper end of the lid portion 86a is located above the upper end of the seedling placing portion 40 when the lid portion 86a is open. As a result, the fertilizer hopper 86 can prevent mud and water droplets from entering the fertilizer hopper 86 from the seedling placing portion 40 when the lid portion 86a is opened. For example, the fertilizer hopper 86 in the fertilizer hopper 86. It is possible to prevent the fertilizer from getting wet.

The upper end, or opening, of the fertilizer hopper 86 is provided above the rear end of the floor step 25. This facilitates the worker to replenish the fertilizer hopper 50 with fertilizer.

The feeding mechanism 87 attached to the lower end of the fertilizer hopper 86 is provided above the seedling feeding belt 40a.

In the fertilizer application device 85, the fertilizer delivered by the delivery mechanism 87 is supplied to the field by its own weight via the fertilizer application hose 88. That is, the fertilizer application device 85 can supply fertilizer to the field without using the blower 52 (see FIG. 1).

As shown in FIG. 12, the fertilizer hopper 86 can rotate in the front-rear direction about the lower end. FIG. 12 is a schematic view showing a state in which the fertilizer hopper 86 according to the modified example is rotated forward. When the fertilizer remaining in the fertilizer hopper 86 is discharged, the fertilizer hopper 86 is rotated forward. When discharging the fertilizer remaining in the fertilizer hopper 86, the seedling planting section 4 and the fertilizer application device 85 are rolled to bring the fertilizer remaining in the fertilizer hopper 86 closer to the discharge port side and from the discharge port. It may be discharged. As a result, the seedling transplanting machine 1 can easily discharge the fertilizer remaining in the fertilizer hopper 86.

When the seedling transplanting machine 1 performs the seedling planting work in the field, the seedling transplanting machine 1 may calculate the planting area in the field based on the rotation speed of the wheel, for example, the rear wheel 11. At that time, the seedling transplanting machine 1 calculates the planting area without counting the number of rotations of the wheels when the seedling transplanting machine 1 turns and retracts. As a result, the seedling transplanting machine 1 can accurately calculate the planted area.

When the seedling transplanting machine 1 advances to the vicinity of the shore of the field and automatically turns, the seedling transplanting machine 1 may detect the approach to the shore by an ultrasonic sensor and automatically stop the advance. Further, the seedling transplanting machine 1 detects the height of the traveling vehicle body 2 on the front side while turning by an ultrasonic sensor. Then, when the height of the front side of the traveling vehicle body 2 during turning becomes higher than the preset height, the seedling transplanting machine 1 may activate an auto diff lock that locks the differential.

Further, the seedling transplanting machine 1 activates the auto diff lock when the height in the left-right direction becomes higher than the preset height on the front side of the traveling vehicle body 2 during turning, that is, when the height difference in the left-right direction becomes large. You may. Further, the seedling transplanting machine 1 may decelerate the traveling vehicle body 2 when the above-mentioned auto diff lock is applied. Further, the seedling transplanting machine 1 may perform a pumping operation in which the auto diff lock is switched ON / OFF when the auto diff lock is operated.

Further, the seedling transplanting machine 1 controls so that the turning radius becomes small when the above-mentioned auto diff lock is applied or when the pumping operation is performed.

The seedling transplanting machine 1 may perform a pumping operation when the HST is open during turning and the rear wheel 11 does not rotate.

The seedling transplanting machine 1 may adjust the steering amount when the amount of change in the depth of the field is larger than a predetermined amount of change preset by the ultrasonic sensor when the automatic turning is performed. Further, when the seedling transplanting machine 1 is performing automatic turning, the amount of change in the depth of the field by the ultrasonic sensor is larger than the predetermined amount of change set in advance by the ultrasonic sensor, and the depth of the field becomes deeper. May adjust the vehicle speed. For example, the seedling transplanting machine 1 increases the vehicle speed. As a result, the seedling transplanting machine 1 can quickly escape from the deepened field.

Further, when the seedling transplanting machine 1 is performing automatic turning, the amount of change in the depth of the field by the ultrasonic sensor is larger than the predetermined amount of change set in advance by the ultrasonic sensor, and the depth of the field becomes deeper. May automatically stop and retreat. Further, the seedling transplanting machine 1 may meander and move forward while avoiding the retreated route after retreating.

The seedling transplanting machine 1 may return the handle 21 (steering) by a predetermined amount if it does not move forward when it is performing automatic turning.

The seedling transplanting machine 1 determines that the field is hard when the rotor height is higher than the set predetermined height by the sensor that detects the height of the rotor, and the seedling planting unit 4 determines the planting height. You may deepen the height and plant the seedlings deeply.

The seedling transplanting machine 1 may use a sensor that detects the height of the rotor as a hardness sensor. When the hardness of the field detected by the hardness sensor is hard, the seedling transplanting machine 1 may desensitize the rolling of the seedling planting portion 4. Further, the seedling transplanting machine 1 may increase the steering assist force when the hardness of the field detected by the hardness / softness sensor is hard. Further, when the hardness of the field detected by the hardness sensor is hard, the seedling transplanting machine 1 may increase the pressing force of the line drawing marker on the field. Further, the seedling transplanting machine 1 may increase the steering force for automatic straight-ahead movement when the hardness of the field detected by the hardness / softness sensor is hard.

Further effects and variations can be easily derived by those skilled in the art. For this reason, the broader aspects of the invention are not limited to the particular details and representative embodiments expressed and described above. Therefore, various modifications can be made without departing from the spirit or scope of the general concept of the invention as defined by the appended claims and their equivalents.

1 Seedling transplanter 2 Traveling vehicle body 4 Seedling planting part 5 Fertilizer application device 10 Front wheel 11 Rear wheel 50 Fertilizer hopper 50a Lid part 51 Feeding mechanism 60 Mounting stand 60a Hole 61 Switching mechanism 62 Support frame 63 Support arm 64 Connecting part 65 Rotating shaft Department

Claims (7)

With the running body
A fertilizer hopper provided on the traveling vehicle body to store fertilizer and
A feeding mechanism for feeding out the fertilizer stored in the fertilizer hopper,
A mounting table that can be placed above the fertilizer hopper,
The above-mentioned stand is provided with a switching mechanism for switching between a mounting position that is above the fertilizer hopper and on which work materials can be placed and a storage position that is a lateral position of the fertilizer hopper. A featured work vehicle. The work vehicle according to claim 1, wherein the fertilizer hopper is provided at each of the left and right ends of the traveling vehicle body. The fertilizer hopper
Equipped with a lid that can open and close the opening provided at the top
The work vehicle according to claim 1 or 2, wherein the pre-described stand is held in the pre-described position in a state where the lid portion is open. The pre-described stand is switched between the pre-described position and the storage position by being rotated.
The work vehicle according to claim 3, wherein the pedestal described above rotates in a direction different from the rotation direction of the lid portion. The work according to claim 3 or 4, wherein the above-mentioned stand restricts the rotation of the lid portion in the closing direction at the previously described placement position when the lid portion is in an open state. vehicle. The work vehicle according to any one of claims 1 to 5, wherein the rotation shaft of the pedestal described above is provided outside the fertilizer hopper in a plan view. The work vehicle according to any one of claims 1 to 6, wherein a plurality of holes are formed in the pedestal described above.

Images