JPS6283807A - Rice field working machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is a system in which a sensor float is connected to this machine so that it can be raised and lowered, and a sensor float is pivoted to the seedling planting device so that it can swing up and down about a rear fulcrum. At the same time, the front fulcrum of the sensor float is supported so as to be relatively movable up and down by a support member provided in the whole seedling planting device so as to be able to swing up and down, thereby changing the ground pressure f of the sensor float.
The seedling planting device is configured to be controlled to raise and lower so that the vertical position of the front fulcrum with respect to the support member is within a set range based on the vertical swinging displacement caused by ill). A linkage mechanism configured to adjust the planting depth by changing the relative height of the seedling planting device to the seedling planting device, and to move the front fulcrum up and down in the same direction as the rear fulcrum moves up and down in the planting depth adjustment Ksp. Regarding the rice field work machine that is provided.

[Conventional technology]

Conventionally, in this type of paddy field work machine, the rear fulcrum of the sensor float is pivoted so as to be relatively swingable at one end of a bell crank loosely fitted to the operating shaft for adjusting the planting depth in a completely horizontal position. , the front fulcrum of the sensor float is pivoted to a bell crank-shaped support member pivotally supported at the front end of the planting case via a bending link, and the free ends 1 of the bell crank on the rear fulcrum side and the support member on the front fulcrum side are respectively The comrades are connected to be relatively swingable by a connecting rod, and when the rear fulcrum is moved up and down by the rotational movement of the operating shaft for adjusting the planting depth, the front fulcrum is also moved up and down by the same amount of vertical movement. There was (Unexamined Japanese Patent Publication No. 1983)
-102714).

[Problems to be Solved by the Invention] However, in the case where the vertical movement amount of the front and rear supports are set to be the same, the reference posture of the sensor float is simply parallel, so the problem is particularly soft (III When soaking seeds in the field, the sensor float caused the seedling phenomenon.

The purpose of the present invention is to make simple changes to the amount of elevation of the front and back supports relative to the seedling planting device when adjusting the seedling planting depth.
The point is to provide something that can solve the problems of the conventional technology.

Means for Solving Problem L] The characteristic configuration of the present invention resides in that the linking mechanism is configured so that the amount of vertical movement of the front fulcrum is smaller than the amount of vertical movement of the rear fulcrum. , its action and effect are as follows.

[For production]

In other words, the vertical movement t of the rear fulcrum for adjusting the planting depth is set to be larger than the amount of vertical movement of the front fulcrum, so when the rear fulcrum is lowered for seeding, the rear fulcrum is The amount of descent is smaller than the amount of descent of the front fulcrum υ, and the sensor float assumes a front stop position than the position before adjusting the planting depth. Also, if you raise the rear fulcrum for deeper planting, the amount of rise of the rear fulcrum will be smaller than the amount of rise of the front fulcrum,
The sensor float takes a forward and downward position compared to the position before adjusting the planting depth. [Effect of the invention] As a result, in the case of immersion seeding, the sensor float takes a relatively forward and downward position, making it easier to plant seedlings. The vertical displacement of the sensor float due to ups and downs of the attachment device is less likely to occur υ, the sensitivity of the pick sensor becomes dull, the up and down movement of the seedling planting device is suppressed, and planting is stable even in soft fields. Floating seedlings and falling seedlings can be suppressed, and when planting deeply, the sensor float is in a forward-down position, making it easy for the sensor float to move up and down due to the ups and downs of the seedling planting device, which means that the sensor sensitivity is sensitive. This reduces the mud pushing phenomenon caused by floats in hard fields, and since all planting is done deeply, even if the sensor sensitivity becomes somewhat sharper, it has little effect on the planting status of seedlings.

As described above, by simply making a change to the amount of vertical movement of the front fulcrum for adjusting the planting depth, a good planting posture of the seedlings can be ensured in any planting condition, and the planting process will be easier. This can contribute to higher efficiency.

(Example) As shown in Fig. 4, the engine (1) and mission case (2) are installed at the front of the machine, and the driving section (3) is installed at the rear end of the machine (A). Seedling stand (4), planting mechanism (5)
), a planting case QO1 that is transmission-connected to a transmission shaft (6) from inside the machine, and a float group (7) that includes sensor floats (7 people) and two side floats (7B). Seedling planting enclosure fit FB), hydraulic cylinder (
8) are interlocked and connected via a link mechanism (9) that can be raised and lowered to form a riding rice transplanter.

Elevation control of the seedling planting device (B) will be described in detail.

As shown in FIG. 1, the front fulcrum (P) of the sensor float (7A) and the support member αυ, which is pivotally supported to the front end of the planting case OqO in a vertically swingable manner, are interlocked and connected by a bending link @. A spring q3 is attached that biases the bending link 4 in a direction to extend it.

The bending link (2) and the arm aQ fixed to the operating shaft (to) of the valve Q4 that fully controls the hydraulic cylinder (8) are interlocked and connected by a wire mechanism αη, and the bending link (
The vertical swing motion of 2) is transmitted to the control pulp αΦ. In other words, when the bending link (6) extends due to the downward movement centering on the rear fulcrum (Q), which will be described later, due to a decrease in the ground pressure of the sensor flow (7A), the wire mechanism α
A force inch wire (17m) is pulled to control pulp a
Operate the spool (14 &) of No. 4 in the direction of the arrow, operate the hydraulic cylinder (8) to the side that lowers the seedling planting device (B), and adjust the distance (1) between the support member αυ and the front fulcrum (P).
1- Seedling planting device (Bl is lowered to keep it constant. On the other hand, when the ground pressure increases and the sensor flow) (7A) is lifted, the seedling planting device (B) e is raised. While keeping the distance 11) constant, the seedling planting device (B) is configured to be able to be controlled up and down so as to maintain a constant posture with respect to the rice field.

As shown in Figures 1 and 2, the first horizontal support shaft extending in the width direction of the aircraft below the planting case a is rotatably supported around its own axis. At the same time, this first horizontal support shaft (
It is connected to the rear fulcrum (R) of a plurality of arms (II't, two side flows) (7B) fixed to the main body (7B) so as to be relatively swingable. Also, sensor float (7A)
is a swinging arm G! that is pivotally supported to be vertically swingable on a second horizontal support shaft provided rearward from the horizontal support shaft (to). A rear fulcrum (Q) is connected to the end of υ, and this rear fulcrum (Q) is pivoted so as to be vertically swingable around four second horizontal support shafts, and the other end of the swinging arm Q] 1 horizontal support shaft (7) and link mechanism (foundation)
Since the first horizontal support shaft (to) rotates around its own axis, it can be raised and lowered together with the side float (7B), and the planting depth can be adjusted. ing.

The second horizontal support shaft (1) and the support shaft - which can rotate integrally with the support member αυ are connected to the first arm ■ which is erected on the second horizontal support shaft (1) and the support shaft (to). A linking mechanism @ is made up of a second arm (C) erected on the side and a connecting rod (7) that connects the first arm (2) and the second arm (7). The supporting member (b) is moved over the distance (1) in conjunction with the lifting and lowering of the rear fulcrum (Q) of the sensor float due to the rotation of the support shaft (g).
1) It is made to swing up and down in the same direction as the rear fulcrum (TQ) while keeping it constant. Further, as shown in FIG. 3, the first arm (2) and the second arm (4) are made to have the same length, and the length of the support member (Ll) and the rear fulcrum (Q) of the bell crank-shaped arm Qυ The length of the connection side L
By setting the relationship f (Lt < Ll) with l), the amount of vertical movement of the front fulcrum fP) is smaller than the amount of vertical movement of the rear fulcrum (Q) related to the planting depth adjustment operation. It is set as follows. Therefore, the sensor float (7
If A) attempts to obtain a shallow planting state by moving downward away from the seedling planting device (B), it will take a more forward-up position, and if it attempts to obtain a deeper planting state, it will take a forward-down position. Become a posture.

Actual flow side according to E] Φ Rear fulcrum for adjusting the planting depth (Pl, (Q
) is not limited to the method of setting the link length.

@ The paddy field working machine may be equipped with a fertilization device.

[Brief explanation of drawings]

The drawings show an embodiment of the paddy field working machine according to the present invention, FIG. 1 is a side view showing the state of connection between the seedling planting device and the raising/lowering valve of the seedling planting device, and FIG. 2 is a side view showing the relationship between the sensor float and the side float. FIG. 3 is an operational explanatory diagram showing the raising and lowering operation of the sensor float in adjusting the planting depth, and FIG. 4 is an overall side view. (A)...This machine, CB)...Seedling planting device, (P)...Front fulcrum, (Q)...Rear fulcrum% ( 7A)...Sensor float, (Foundation)...Linkage mechanism.

Claims (1)

[Claims] A seedling planting device (
The sensor float (7A) is pivoted vertically about the rear fulcrum (Q) to B), and the front fulcrum (P) of the sensor float (7A) is vertically supported to the seedling planting device (B). The support member (11) provided so as to be swingable is supported so as to be relatively movable up and down, and the support member (11) is supported by the support member (11) so as to be able to move up and down relative to each other.
The seedling planting device (B) is controlled to rise and fall so that the vertical position of the front fulcrum (P) with respect to 11) is within a set range, and the rear fulcrum (Q) is raised and lowered to raise and lower the sensor float (7A). The structure is configured to adjust the planting depth by changing the relative height of the seedling planting device (B), and as the rear fulcrum (Q) moves up and down in adjusting the planting depth, the front fulcrum (P)
The paddy field work machine is equipped with a linkage mechanism (27) for raising and lowering the wheels in the same direction, and the amount of vertical movement of the front fulcrum (P) is smaller than the amount of vertical movement of the rear fulcrum (Q). A paddy field working machine in which the linkage mechanism (27) is configured.