JPH0119622Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a rear-mounted rice transplanter in which a planting device is connected to the rear of a passenger traveling machine via a lifting device.

With this type of rice transplanter, the operator needs to accurately determine the direction of movement of the machine when starting the planting work, so most of the operator's attention is used to keep an eye on the front and operate the machine. Furthermore, it is difficult to confirm whether the operation and conditions of the planting device installed at the rear of the aircraft are appropriate for rice transplantation. In other words, when using a planting device, it is necessary to check the status of various factors such as the remaining amount of seedlings, height above the ground, and delineation marker during planting work, but when the above-mentioned forward gaze is required, It is extremely difficult to look back and confirm these facts.

For this reason, there have been cases where the machine has been driven without confirming whether the planting device is appropriate for planting, resulting in poor planting.

For example, if the rice transplanter is lowered and driven without any seedlings, the planting surface that has undergone the driving and planting action will be considerably roughened, making it impossible to run the rice transplanter again to plant. This would become impossible, resulting in the problem of having to transplant rice artificially.

The purpose of the present invention is to eliminate such inconveniences and to enable the operator to check the status of the planting device while looking ahead.

In order to achieve this purpose, the present invention provides the rice transplanter described at the beginning with a lowering detection mechanism that detects the lowering of the planting device to the planting position, and a lowering detection mechanism that detects the lowering of the planting device to the planting position. A display device is installed in front of the traveling body, and is equipped with a seedling amount detection mechanism that detects the presence of more than a fixed amount of seedlings, and is equipped with a descending indicator and a seedling amount indicator that display the detection results of these detection mechanisms, respectively. This configuration adopts a configuration in which the bonnet is arranged on the upper surface of the bonnet toward the rear of the bonnet and toward the seat. With this configuration, the worker sitting in the driver's seat can check whether the planting device is suitable for starting work without changing his or her line of sight, which is caused by always looking at the indicator while working. As a result, the above-mentioned problems can be avoided and work efficiency can be improved and mistakes can be prevented at a higher level, and
We were able to achieve this in one fell swoop.

In addition, by having a descending indicator and a seedling amount indicator separately arranged side by side, you can not only check whether it is appropriate to start planting by looking at the display, but also check the elevation status of the planting device and the seedlings. Since it is possible to check the quantity status at each individual site at the same time, there is also the advantage that practical convenience is further improved.

Next, embodiments of the present invention will be described.

FIG. 1 shows an example of a rice transplanter. This rice transplanter is equipped with a four-wheel parallel link type lifting device 2 at the rear of a four-wheeled passenger traveling body 1, and a pair of left and right hanging links 3 at the rear of this lifting device 2. , 3, the planting device 4 is connected in a rollable manner. and,
At the top of the bonnet 6 located in front of the seat 5 of the traveling aircraft 1, there are two stays 7 on the left and right,
A lamp display device 8 is attached toward the seat 5 side.

This lamp display device 8 includes a descending indicator lamp 10, a planting amount indicator lamp 11, and a line marker indicator lamp 12 arranged side by side. and,
The display boards 10a, 11a, 12a covering the rear sides of each of the display lamps 10, 11, 12 display transparent pictures of planting nails, pine seedlings, and markers as shown in FIG. 2, respectively. lamp 10,1
The display purpose of items 1 and 12 has been clarified. Further, a sensor rib 35 in the form of a long protrusion in the front-rear direction is provided at the center of the top of the display device 8 to serve as an indicator marker, and this rib 35 is used as an indicator tool as a forward indicator.

The lamps 10, 11, and 12 are turned on and off in response to detection results from a lowering detection mechanism 13, a seedling amount detection mechanism 14, and a marker detection mechanism 15, which will be described below. First, the descent detection mechanism 13 will be explained together with the elevating and lowering operation structure.

A lifting operation lever 17 that controls the expansion and contraction of the lifting hydraulic cylinder 16 of the lifting device 2 is disposed on the operating section of the traveling machine body 1, and this lever 17 is moved along the guide groove 19 of the operation guide plate 18 shown in FIG. It is designed so that it can be moved freely. The guide groove 1 of this guide plate 18
A normally closed first limit switch 20 is disposed at the lowering operation position, which is one end of the limit switch 9, and the operation lever 17 comes into contact with the first limit switch 20.
This switch 20 is opened.

This first limit switch 20 is interposed in the power supply circuit of the descending ramp 10. Therefore, when the operating lever 17 is in the descending operation position and the planting device 4 is descended, the descending ramp 10 is The light goes out, indicating to the operator that the lowering operation of the planting device 4 has been completed. The operating lever 17 also serves as an on/off operation for the planting clutch of the planting device 4, and controls the engagement of the planting clutch by displacement to the lower operating position. Therefore, the lowering detection mechanism 13 is also used as a mechanism for detecting the driving of the planting device, and the lowering indicator lamp display 10 also indicates that the planting clutch has been engaged. A detailed explanation of this dual-purpose structure will be omitted since it belongs to general technology and can be easily understood.

Next, the seedling amount detection mechanism 14 will be explained.

As shown in FIG. 4, a pressure contact sensor 22 that can be freely moved in and out from the back side is provided in the middle of each seedling placement portion of the seedling placement stand 21 of the planting device 4, and this sensor 22 is held in place by a spring (not shown). It is biased in the protrusion direction (the direction of the arrow in FIG. 4). And this sensor 22
A normally closed second limit switch 23 is provided on this seedling mounting stand 21, which is switched by being pressed by the seedlings placed thereon.

Then, the plurality of second limit switches 23
are interposed in parallel with the power supply circuit of the seedling amount display lamp 11, so that when the pressure sensor 22 has a sufficient amount of seedlings pressed by the placed seedlings, the lamp 11 is turned off, and conversely, the pressure sensor 22 turns off the lamp 11. When any one of the sensors 22 is not pressed by a seedling, the lamp 11 is turned on (or blinks) to indicate that the amount of seedlings is insufficient.

Next, the marker detection mechanism 15 will be explained together with the marker egress/retraction structure.

As shown in FIG. 6, the line marker 24 has its base end pivotally connected to both ends of the horizontal frame 25 of the planting device 4 so as to be able to swing up and down. The wire 2 is connected to the rear protruding end 2b of the top link 2a of No. 2.
6, 26 are stretched, and when the planting device 4 rises due to a change in the distance between the protruding end 2b and the marker pivot portion due to elevation, the marker 24 becomes an upright position, and when it descends, the spring 27 The biasing force causes it to fall sideways.

The line marker 24 is provided with a locking structure 28 that locks in an upright position. These lock structures 28, 28 fix pins 29, 29 near the swing centers of the markers 24, 24, and when the markers 24, 24 are in the upright position, the pins 29, 29,
Engagement arms 30, 30 that fit into the lateral frame 29 from above are pivotally supported on the horizontal frame 25 so as to be able to swing up and down. The lower ends of the operating levers 31, 31 are pivotally connected to the engaging arms 30, 30, and the upper ends of the levers 31, 31 are slidably moved up and down to the seedling stand 2.
It is held by a guide member 33 fixed to one support arm 32. A normally open third limit switch 34 is fixedly disposed on the horizontal frame 25 at a position where each marker 24 comes into contact with the base when the marker 24 assumes an upright position. They are interposed in the power supply circuit of the marker display lamp 12 in series with each other. In this manner, the lamp 12 is turned on when both markers 24 are in the upright position, and is turned off when the markers 24 are out of this position and into the extended position.

The above embodiments can also be modified by combining one or more of the following.

The colors emitted by the three indicator lamps 10, 11, and 12 are set to be different from each other, for example, red, blue, and green. (To change the luminescent color, use the color of the lamp itself or the display board 1 that covers this lamp.)
This can be done by changing the color of the transparent parts 0a, 10b, and 10c. ) As shown in FIG. 6, the display device 8 has a structure in which the upper front part of the bonnet 6 projects upward and display plates 10a, 10b, and 10c are provided on the rear surface.

The upper surface of the display device 8 is formed into a chevron shape projecting forward in plan view as shown in FIG. 7, and this chevron plate is used as a forward movement indicator instead of an index marker. In this case, if the top surface of the display device is provided with an index line pointing forward and backward as shown in the figure, it will be easier to aim.

The first and second limit switches 20, 23
is always open, and multiple or second limit switches 23
are arranged in series with each other, and the third limit switch 34
is normally closed, and the third limit switch 34 on the left and right
are arranged in parallel with each other, and each of the lamps 10, 1
1 and 12 should be reversed from the above.

If the lift operation lever 17 does not also operate the planting clutch, a fourth limit switch similar to the first limit switch 20 is provided on the operation lever of the planting clutch or the clutch actuating portion of the planting clutch for planting. The display device 8 is provided with a planting clutch display lamp which constitutes a device drive state detection mechanism and is blinked by the fourth limit switch.

In a device having a conventionally known planting clutch on/off device that automatically turns on the planting clutch when the height of the planting device 4 reached a certain level or less by the lifting device 2, the fourth limit switch shown above is replaced with the first limit switch. 20 in the power supply circuit of the descending indicator lamp 10.

This made it possible to directly detect the descending state of the planting device 4.

Instead of each of the lamps 10, 11, 12, a horn with different tones, rhythms, or pitches is provided.

The number of seedling quantity display lamps 10 corresponding to the number of seedling placing parts of the seedling placing stand is provided, and the second seedling quantity display lamp 10 of each seedling placing part is
One limit switch 23 is provided in each power supply circuit of the lamp 10 to display the amount of seedlings in each seedling placement part.

Two marker display lamps 12 are provided, and the left and right third limit switches 34 are connected to the lamps 12.
One marker is provided in each power supply circuit to display the entry and exit of the left and right line markers 24, 24, respectively.

Items that do not have a picture attached to the display board.

Manually moving the line marker in and out. (The structure is well known).

In addition to the above, the object to be detected may be one that detects and displays the on/off state of each clutch and its display. In this case, the detection means is preferably a limit switch interposed in the power supply circuit of each indicator lamp as described above, or each operating lever operating section of each clutch or a clutch piece actuating section.

[Brief explanation of drawings]

The drawings show an embodiment of the rice transplanter according to the present invention, in which Fig. 1 is an overall side view of the rice transplanter, Fig. 2 is a rear view showing the display device, Fig. 3 is a perspective view showing the descent detection mechanism, and Fig. 4 is a perspective view showing the descending detection mechanism. FIG. 5 is a front view showing the line drawing marker detection mechanism and the marker operating tool; FIGS. 6 and 7 are perspective views showing another embodiment of the display device; FIG. 8 is a rear view showing another embodiment of the display board. DESCRIPTION OF SYMBOLS 1... Traveling body, 2... Lifting device, 4... Planting device, 10... Lowering indicator, 11... Seedling amount indicator, 13... Lowering detection mechanism, 14... Seedling amount detecting mechanism, 8 ...Display device, 6...Bonnet, 5...
Seat, 35... indicator.

Claims (1)

[Scope of utility model registration request] In a rice transplanter in which a planting device 4 is connected to the rear of a passenger traveling machine body 1 via a lifting device 2, a descent detection mechanism 1 detects descent of the planting device 4 to a planting posture.
3, and a seedling amount detection mechanism 14 for detecting that the amount of seedlings to be planted by the planting device 4 is greater than a predetermined amount, and the detection results by each of these detection mechanisms 13 and 14 are displayed separately. A display device 8 in which a descending indicator 10 and a seedling amount indicator 11 are arranged side by side,
Positioned on the upper surface of the front bonnet 6 of the traveling aircraft 1 and within the visual field of the operator who sees the forward indicator indicator 35 provided on the bonnet 6,
The rice transplanter is located behind the bonnet 6 towards the seat 5 side.