JP6900968B2 - Seedling transplanter - Google Patents

Description

The present invention relates to a seedling transplanting machine that performs a work of transplanting seedlings to a field.

Patent Document 1 describes a walking type seedling transplanting machine.

This seedling transplanter moves to the field while the worker holds the handle provided at the rear of the machine and walks, and in the field, the worker sits on a seat provided on the vehicle body and heads toward the seedling supply device provided at the rear of the machine. The seedlings are moved forward while supplying the seedlings, and the seedling transplanting device moves up and down to transplant the seedlings to the ridges of the field.

Japanese Patent No. 5949728

Since the car body of the seedling transplanter moves up and down according to the height of the ridges, workers who sit backwards on the seats of the car body running forward notice that the car body tilts when concentrating on the seedling supply work. Difficult and risk of falling.

An object of the present invention is to prevent a worker from tipping over by detecting the inclination of the vehicle body in a seedling transplanting machine that supplies seedlings while sitting on a seat provided on the vehicle body.

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

The present invention
A worker sits on a seat (33) provided on a vehicle body (2) that is supported by a traveling device (1b, 13) and moves up and down by a hydraulic valve unit (BU) to supply seedlings to a seedling supply device (20). In a seedling transplanting machine that performs seedling transplanting work
A vehicle body inclination detecting member (100) for detecting the inclination of the vehicle body (2) is provided, and when the vehicle body inclination detecting member (100) detects an inclination of a predetermined value or more, the driving of the traveling device (1b, 13) is stopped. ,
The seedling transplanting machine is characterized in that the vehicle body inclination detecting member (100) is provided on the elevating sensor (5) that detects the height of the vehicle body (2).
In the first invention related to the present invention, a worker sits on a seat (33) provided on a vehicle body (2) supported by a traveling device (1b, 13) and moved up and down by a hydraulic valve unit (BU). In a seedling transplanting machine that supplies seedlings to a supply device (20) and performs seedling transplanting work, a vehicle body inclination detecting member (100) for detecting the inclination of the vehicle body (2) is provided, and the vehicle body inclination detecting member (100) is provided. The seedling transplanting machine is characterized in that when a tilt of a predetermined value or more is detected, the driving of the traveling device (1b, 13) is stopped.

The second invention related to the present invention is the first invention related to the present invention, wherein the vehicle body inclination detecting member (100) is provided on the elevating sensor (5) for detecting the height of the vehicle body (2) . The seedling transplanting machine of the invention.

In the third invention related to the present invention, the suppression arm (41) supporting the suppression ring (4) that suppresses the field scene after the seedling planting tool (U) is transplanted is used as the vehicle body inclination detecting member (100). When an inclination detection sensor (106b, 106c) for detecting upward rotation is provided near the pivot axis (40) of the suppression arm (41) and the inclination detection sensor (106b, 106c) detects an inclination of a predetermined value or more. The seedling transplanting machine of the first invention related to the present invention, characterized in that the driving of the traveling device (1b, 13) is stopped.

In the fourth invention related to the present invention , the vehicle body inclination detection member (100) is an inclinometer (110) provided under the seat (33), and the inclinometer (110) is turned on at an inclination of a predetermined value or more. (106d) is provided, and when the tilt detection sensor (106d) detects on, the driving of the traveling device (1b, 13) is stopped, which is the seedling transplanting machine of the first invention related to the present invention. ..

According to the present invention, it is possible to prevent the vehicle body (2) from further traveling and falling. Further, the elevating sensor (5) that comes into contact with the field scene can easily detect the inclination of the vehicle body (2) with respect to the field scene, and the fall danger angle can be reliably monitored.
In the first invention related to the present invention, the seedling transplanting machine is a seedling feeding device (20) in which an operator sits on a seat (33) provided on a vehicle body (2) supported by a traveling device (1b, 13). Seedlings are transplanted to the vehicle body, but when the vehicle body inclination detection member (100) detects an inclination of the vehicle body (2) above a predetermined level, the driving of the traveling devices (1b, 13) is stopped. It is possible to prevent 2) from further traveling and falling.

In the second invention related to the present invention, in addition to the effect of the first invention related to the present invention, the elevating sensor (5) in contact with the field scene detects the inclination of the vehicle body (2) with respect to the field scene. It is easy and reliable to monitor the fall risk angle.

In the third invention related to the present invention, in addition to the effect of the first invention related to the present invention, a suppression arm (41) for supporting the suppression ring (4) provided in the seedling transplanter is provided as a vehicle body inclination detecting member. By setting (100), the configuration is not complicated, and the seedling transplanting machine has a simple configuration in which tilt detection sensors (106b, 106c) are added.

In the fourth invention related to the present invention, in addition to the effect of the first invention related to the present invention, the inclinometer (110) and the inclining detection sensor (106d) provided in the lower part of the seat (33) are before the work. It is easy to check and adjust the tilt angle of the vehicle body (2) on which the tilt detection sensor (106d) is turned on.

It is a left side view of the whole seedling planting machine which concerns on embodiment of this invention. Same as above It is a plan view of the whole seedling planting machine. It is an enlarged plan view of the mission case part of the vehicle body as above. It is a perspective view of the hopper for planting seedlings as above. It is a perspective view for explaining the operation of the suppression ring of the same as above. The same is the same as the hydraulic circuit diagram. It is a partially enlarged side view of the lifting sensor of the same as above. It is the enlarged side view of the suppression arm of the same as above. It is an enlarged side view of the suppression arm of another Example of this invention. It is an enlarged side view of the seat which concerns on embodiment of this invention. It is a partial side view of the Example which provided the tail wheel which concerns on embodiment of this invention.

An embodiment of the present invention will be described below with a two-row planting seedling planting machine. In the following description, the side on which the steering wheel 8 is arranged is the rear side, and the opposite side, that is, the side on which the engine 6 is arranged is the front side. Then, the right-hand side of the worker standing toward the front side of the machine at the rear of the machine is the right, and the left-hand side is the left.

In the vehicle body 2, the engine 6 and the mission case 7 are arranged at the front portion of the main frame 2a, the steering handle 8 is provided at the rear end portion of the main frame 2a, and the left and right axle housings 9 overhanging both sides of the mission case 7 are provided. A traveling transmission case 10 that swings up and down is provided in each of the rotating cylinders 9a that rotate around, and a driving wheel 1a that transmits a driving force and a traveling wheel 1b that rotates by receiving the driving force are provided in the traveling transmission case 10. The left and right traveling wheels 1b and the left and right front wheels 13 mounted on the front wheel axle 12 provided at the front end of the vehicle body 2 are used for traveling. A hydraulic pump 6a driven by the power of the engine 6 is provided on the left side surface of the engine 6. Further, a fuel tank 6b is provided on the upper side of the engine 6, and a bonnet 6c covers the upper portion thereof.

The front parts of the left and right deceleration cases 7L and 7R are fixed to both the left and right sides of the mission case 7, and the rear part of the left and right deceleration cases 7L and 7R protrudes rearward from the rear part of the mission case 7 (or from the mission case 7). The left and right deceleration cases 7L and 7R are connected and fixed by the connecting case 7a between the protruding ends. Therefore, the mission case 7, the left and right deceleration cases 7L / 7R, and the connecting case 7a form a frame structure of the framework, and the strength of the 7 parts of the mission case is improved to form a robust frame structure of the traveling part, so that the running stability is improved. improves.

The tips of the left and right drive shafts 7b protruding from the left and right sides of the mission case 7 have a structure in which the left and right drive shafts 7b are freely rotatable and inserted into the inner ends of the left and right transmission shafts 7c that drive the left and right drive wheels 1a, respectively. The left and right first drive sprockets 7d are mounted on the tips of the two so as to rotate integrally with each other.

On the other hand, the left and right driven shafts 7e are attached to the protruding ends of the left and right deceleration cases 7L and 7R, respectively. The left and right driven shafts 7e are mounted with the first driven sprocket 7f and the second driven sprocket 7g rotating integrally.

Further, the left and right second driven sprockets 7h are mounted on the inner ends of the left and right transmission shafts 7c in a state of being integrally rotated.

Then, the left and right first transmission chains 7i are hung around the left and right first drive sprockets 7d and the left and right first driven sprockets 7f, respectively, and the left and right second transmission chains 7j are respectively mounted on the left and right second drive sprockets 7g and the left and right second driven sprockets 7h. It is being hung around.

Further, the left and right first driven sprocket 7d and the left and right second driven sprocket 7g have the same number of teeth, and the left and right first driven sprocket 7f and the left and right second driven sprocket 7h have the same number of teeth. The number of teeth of the left and right first driven sprocket 7d and the left and right second driven sprocket 7g is twice the number of teeth of the left and right first driven sprocket 7f and the left and right second driven sprocket 7h.

Therefore, the drive rotation speed of the left and right drive shafts 7b is reduced to 1/4 in the left and right deceleration cases 7L and 7R and transmitted to the left and right transmission shafts 7c, respectively.

Further, a base portion of a left-right support frame 7k that rotatably supports the left-right rotating cylinder portion 9a is fixed to each outer wall of the left-right deceleration cases 7L and 7R.

The vehicle body 2 is provided with an aircraft control mechanism that controls the position of the aircraft by moving the left and right traveling transmission cases 10 up and down with respect to the aircraft. In this machine body control mechanism, a lifting hydraulic cylinder 15 as a lifting actuator is provided rearward from the hydraulic valve unit BU arranged on the mission case 7, and the tip of the piston rod of the lifting hydraulic cylinder 15 is in the left-right direction of the machine. An interlocking arm 16 as a long arm is rotatably attached around an axis in the vertical direction. The left and right ends of the interlocking arm 16 and the left and right housing arms 14 fixed to the rotating cylinder portion 9a are connected via left and right rods 18 as a connecting body. The left rod 18 on the left side incorporates a rolling cylinder 17 as a rolling actuator, and its length can be changed by expanding and contracting the rolling cylinder 17.

The elevating hydraulic cylinder 15 and the rolling cylinder 17 are operated by controlling the hydraulic oil supplied from the hydraulic pump 6a by the elevating control valve 49 and the rolling control valve 48 in the hydraulic valve unit BU, respectively. When the elevating hydraulic cylinder 15 is expanded and contracted, the left-right traveling transmission case 10 moves up and down with respect to the machine body in the same direction by the same amount, and the machine body moves up and down. Further, when the rolling cylinder 17 is expanded and contracted, the left traveling transmission case 10 moves up and down with respect to the airframe, and the airframe tilts left and right.

An elevating sensor 5 is provided at the lower part of the mission case 7 so as to extend downward and rearward and come into contact with the ridge surface. When the elevating sensor 5 rotates up and down, the rotation is transmitted to the elevating control valve 49 by the connecting rod 5d, and the elevating sensor 5 The elevating hydraulic cylinder 15 is operated in the direction in which the angle of 5 returns to the original position (elevation control). As a result, the aircraft is controlled to move up and down so that the height from the upper surface of the ridge to the aircraft is kept constant, and the planting depth of the seedlings is controlled to be constant regardless of the height change of the ridge. Good growth of seedlings after attachment.

The rolling control valve 48 in the hydraulic valve unit BU is switched in conjunction with the left / right inclination detection of the upper surface of the ridge A due to the fluctuation of the relative height of the left / right suppression wheels 4, which will be described later. The rolling cylinder 17 operates appropriately to control the body to return horizontally to the left and right.

By expanding and contracting the rolling cylinder 17 on one side that connects between one housing arm 14 and the side end of the interlocking arm 16, the traveling transmission case 10 on this side is connected by the rod 18 on the other side. The vehicle body 2 can be rolled up and down with respect to the traveling transmission case 10 on the side of the vehicle, so that the vehicle body 2 can be tilted horizontally or parallel to the soil surface. The posture can be controlled. Then, such rolling control is performed by detecting the left-right tilted state by the suppression ring 4 that suppresses the planted seedlings at the seedling planting position from the left and right sides.

That is, in a seedling planting machine in which the left and right traveling transmission cases 10 can swing up and down with respect to the vehicle body 2, two left and right seedling planting tools U are arranged in parallel in the left and right direction of the machine body, and the left and right seedling planting is performed. The left and right seedling planting hoppers 3 of the tool U are used to control the rolling of the left and right seedling planting positions by the vertical swing of the left and right suppression wheels 4. The left and right sides of the seedlings planted in the field are suppressed by the pressure ring 4 by raising and lowering the seedling planting hopper 3, and the seedling planting posture is stabilized. At this time, the left and right suppression wheels 4 for suppressing the left and right seedling planting positions are configured to function as sensors for detecting the left and right inclination of the seedling planting soil surface. Each of the left and right suppression wheels 4 swings up and down independently for each of the left and right seedling planting positions, and detects the left-right inclination of the planted soil surface by the difference in height of the swinging positions, and these soil surfaces. The traveling transmission case 10 is swung up and down by detecting the inclination of the vehicle body 2, and rolling control is performed so as to keep the vehicle body 2 parallel to the soil surface.

Further, by swinging the left and right traveling transmission cases 10 to the non-sapling position (the state in which the aircraft is raised to the maximum by moving it downward), both the left and right suppression wheels 4 are interlocked so as to rise to the non-grounded height. It is configured. That is, when raising the aircraft high, the left and right traveling transmission cases 10 are moved downward to raise the vehicle body 2 to the non-sapling posture, and the left and right suppression wheels 4 are raised in conjunction with the non-acting posture position, and the vehicle body is raised. It is in a state where it does not interfere with the running turn of 2, and the aircraft can be easily turned.

Further, an operation panel 8a is provided at the base of the control handle 8, and the elevating control valve 49 is manually operated on the operation panel 8a to manually move the aircraft up and down and to stop the driving of the planting portion. A lever 8b and a main clutch lever 8c for turning on / off the main clutch are provided.

The seedling planting hopper 3 is arranged within the rear width between the left and right traveling transmission cases 10 as a two-row planting configuration arranged at regular intervals on the left and right. At the rear of the vehicle body 2, a seedling supply device 20 for connecting and rotating a plurality of seedling cups 19 is provided in a turntable configuration, and a seedling planting hopper 3 is placed on the left and right under the rear side of the seedling supply device 20. Two are arranged in. By rotating the seedling cup 19 in the left-right direction, seedlings are taken out from the seedling tray mounted in advance on the auxiliary seedling cradle 21 on the upper part of the vehicle body 2 and supplied to each seedling cup 19. When each of the seedling cups 19 rotates and is located above the seedling planting hopper 3, the shutter at the bottom of the cup is opened to drop and supply the contained seedlings to the lower seedling planting hopper 3. Is.

The seedling planting hopper 3 is provided so as to be able to open and close and rotate to the left and right with respect to the seedling planting bracket 22 as a frame portion, and has a seedling guide 23 on the upper side for guiding the seedlings supplied from the seedling cup 19 to fall. However, it is configured to be driven up and down via parallel link arms 25 and 26 as an up and down link device whose base is attached to the seedling planting transmission case 24. The seedling planting transmission case 24 is fixed to the vehicle body 2 frame portion, and is transmitted from the mission case 7 portion. The upper link arm 25 is moved up and down via the rod 28 by the crank arm shaft 27 rotated by a part of the transmission mechanism, and the seedling planting hopper 3 is planted in the vertical direction along the locus P.

The left and right seedling planting hopper 3 has a beak-shaped shape, and the upper portion thereof is pivotally supported by the seedling planting bracket 22 by a left-right rotation support shaft 3a in the front-rear direction of the machine body, and the lower end thereof is pivotally supported in the left-right direction of the machine body. It is provided so that it can be opened and closed. A tension spring 3b is provided between the left and right seedling planting hoppers 3, and the left and right seedling planting hoppers 3 are held in a closed state by the attractive force of the tension spring 3b.

On the other hand, the left and right opening / closing arms 3c extend upward from the upper ends of each of the left and right seedling planting hoppers 3, and the outer wire of the operation wire 31 is connected to the upper portion of the left opening / closing arm 3c to connect the outer wire of the operation wire 31 to the right opening / closing arm 3c. The inner wire of the operation wire 31 is connected to the upper part, and the inner wire of the operation wire 31 is connected to the arm 30 formed at the base end of the lower link arm 26 by the operation wire 31 to raise and lower the left and right seedling planting hoppers 3. Along with this, the left and right seedling planting hoppers 3 are opened and closed. That is, the left and right seedling planting hoppers 3 are moved up and down by rotating the crank arm shaft 27 while drawing a substantially elliptical planting locus P, and the left and right seedling planting hoppers 3 are lowered from the position immediately before the top dead center. Is closed, the inner wire of the operation wire 31 is pulled by the arm 30 at the lowest position, and the left and right opening / closing arms 3c operate in the direction of approaching each other to open the left and right seedling planting hoppers 3 to the front of the highest position of the ascending stroke. It remains open.

FIG. 7 shows the tip of the elevating sensor 5, and the inclination detection rod 100 as a vehicle body inclination detection member is pivotally supported by the pivot 107 at the rear end of the elevating sensor 5, and the upper side thereof is attached to the elevating sensor 5 by the bolt 105. The arm 101 standing on the inclination detection rod 100 and the arm 102 standing on the elevating sensor 5 are attracted by the tension spring 103 by being pressed by the attached pressing plate 104.

Therefore, when the front side of the vehicle body 2 is lifted, the inclination detection rod 100 is pressed against the ridge surface, the pressing plate 104 is pushed and bent, the inclination detection rod 100 is flipped up, the inclination detection sensor 106a is pushed, and a stop signal is sent to the engine 6. Be done. As a result, the operator sitting on the seat 33 knows that the traveling is stopped and the vehicle body 2 has a risk of falling. It should be noted that the position of the inclination detection rod 100 is easier to detect the inclination of the vehicle body 2 on the front side than the ground contact portion of the traveling transmission case 10. Further, the presser plate 104 is replaced with a new one when the vehicle body 2 is tilted and bent.

FIG. 8 shows a suppression arm 41 to which the suppression ring 4 is attached. When an inclination detection sensor 106c is provided on the suppression arm shaft 40 that pivotally supports the suppression arm 41, the rear portion of the suppression arm 41 is raised and the vehicle body 2 is tilted. The tilt detection sensor 106c is turned on to stop the rotation of the engine 6 and the running is stopped.

In the embodiment of FIG. 9, when the rear portion of the suppression arm 41 is raised and the vehicle body 2 is tilted, the sensor block 108 provided on the front side of the suppression arm shaft 40 turns on the inclination detection sensor 106b.

FIG. 10 shows an embodiment in which the inclinometer 110 is provided on the seat frame 112 attached to the seat support 113 erected from the vehicle body 2, and the inclinometer 110 scales the inclination of the weight 111 suspended from the seat frame 112 with the pointer 111a. It is displayed on 11b, and the inclination of the weight 111 is detected by the inclination detection sensor 106d. It is preferable to adjust the position of the tilt detection sensor 106d up and down to see how much the tilt detection sensor 106d is turned on by actually tilting the vehicle body 2.

FIG. 11 shows an embodiment in which the tail wheel 115 is provided at the rear of the traveling transmission case 10 so as to be able to move up and down. The tail wheel frame 118 pivotally supported by the traveling transmission case 10 is connected to a tail wheel lever provided in the vicinity of the control handle 8. When the vehicle is raised and lowered by the lifting cable 116 and then lowered and fixed, the tail wheel 115 touches the ground even if the front of the vehicle body 2 is lifted to prevent it from tipping backward. A step 117 is provided on the upper side of the tail wheel 115 so that the operator can stand and steer.

Although not shown, a stop switch for the engine 6 is provided on the grip of the steering wheel 8 so that the engine 6 stops when the hand is released from the grip. It is safe to release your hand and stop running.

BU hydraulic valve unit U seedling planting tool 1b Traveling wheel (traveling device)
2 Body 4 Suppression wheel 5 Lifting sensor 10 Wheelie transmission case 13 Front wheel (wheelie)
20 Seedling supply device 33 seats
40 Pivot shaft 41 Suppression arm 100 Body tilt detection member 106b, 106c, 106d Tilt detection sensor 110 Tiltmeter

Claims (1)

A worker sits on a seat (33) provided on a vehicle body (2) that is supported by a traveling device (1b, 13) and moves up and down by a hydraulic valve unit (BU) to supply seedlings to a seedling supply device (20). In a seedling transplanting machine that performs seedling transplanting work
A vehicle body inclination detecting member (100) for detecting the inclination of the vehicle body (2) is provided, and when the vehicle body inclination detecting member (100) detects an inclination of a predetermined value or more, the driving of the traveling device (1b, 13) is stopped. ,
A seedling transplanting machine characterized in that a vehicle body inclination detecting member (100) is provided on an elevating sensor (5) that detects the height of the vehicle body (2).

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