JPH0125531B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a riding type rice transplanter, and more particularly to a riding type rice transplanter equipped with a safety device when entering a field while traveling in reverse.

[Prior Art] A riding rice transplanter of the type in which a planting machine is installed at the rear of a traveling vehicle body via a lift mechanism so as to be able to move up and down freely, is used when entering a field or when entering by reversing. However, if the rear wheel goes over the ridge and the front wheel is still on the ridge, the riding rice transplanter will end up on the bottom, and in severe cases, the rear end of the float may get stuck in the mud in the field. You may find yourself stuck inside. If the float was not aware of this condition and tried to drive further into the field, the rear end of the float would plunge deep into the mud, causing an accident that would cause the float to break.

[Purpose of the Invention] Therefore, the present invention is designed to quickly solve a situation in which the tiller is deep when entering the field, and the wheel that has gone over the ridge is buried deep and the rear end of the float gets stuck in the mud, causing a load to be applied. In order to prevent damage to the float, the main change lever of the vehicle body is shifted to reverse speed when driving over a ridge and a load is applied to the rear end of the grading float. The operating mechanism is configured to activate a warning device such as a horn or lamp, or forcibly interrupt the travel drive system and automatically stop the vehicle from moving backwards. It is characterized by:

[Example] Hereinafter, the configuration of the present invention will be explained with reference to an illustrated example.

In Fig. 1, a planting machine 3 is attached to the rear of the traveling vehicle body 1 via a lift mechanism 2 so as to be able to move up and down, and in this figure, the planting machine 3 is shown raised to its upper limit. It is shown. Running vehicle body 1
As shown in Fig. 2, the main change lever 4 can be set to three forward speed positions and a reverse speed position (hereinafter referred to as the R speed position), and the first switch 5 is disposed in the R speed position. It is designed to be turned on when the main change lever 4 is set to the R speed position. The pedal 6 connects and disconnects a main clutch (not shown). A pair of soil leveling floats 8 are arranged on both sides of the main float 7 of the planting work machine 3, and the upper part of the bracket 9 in the center thereof is pivotally connected to the main body 11 of the planting work machine 3. The tip of the side float 8 is connected to the arm 1 of the main body 11 via a link-based telescoping mechanism 12.
1a. As shown in FIGS. 3 and 4, a second switch 13 is fixed to the lower surface of the arm 11a.
A pair of numerals 3 are provided on the left and right side floats 8 (the other is not shown), and the tips 8a of the soil leveling floats 8 are moved to the position indicated by the chain line 8A in FIG. 3 by the action described later. When the second switch 13 is raised, the operating rod 13a of the second switch 13 is pressed to turn on the second switch 13, and when the first switch 5 is turned on, an electric circuit is closed and the actuating mechanism is activated. In FIG. 5, the first switch 5 and the pair of left and right second switches 13 are connected in parallel, and a warning horn 14 is connected to the track 10.
It is connected between a and 10b.

In Fig. 1, the riding rice transplanter is moving from outside the field as shown by the arrow 15 and is about to cross the ridge 16, and in this case, the planting machine is moving with the lift mechanism 2 as described above. The main change lever 4 is in the R speed position. From this state, the running vehicle body 1
When the float tries to move further backward, the rear end of the soil leveling float 8 is in the mud of the field, so the float is subjected to earth pressure due to the mud and is pushed into the soil of the field 17, descending in the direction of arrow 18. In extreme cases, an excessive force will be applied to the float and it will be damaged. That is, the leveling float 8 is indicated by the arrow 1.
It is rotated in 8 directions, and its tip 8a is rotated in the 3rd direction.
As shown in the figure, when it rises to the 8A position as shown in the chain line, the operating rod 1
3a to turn on the second switch 13.
At this time, the main change lever 4 is in the R speed position and the first switch 5 is turned on in advance, so when either the left or right second switch 13 is turned on, the first and second switches are turned on. The horn 14 shown in FIG. 5 is activated by the AND signal (operating mechanism) to generate a warning sound, or a warning lamp (not shown) is simultaneously turned on.

The operator who confirms this warning by the activation of the horn stops the backward movement of the vehicle body 1, thereby preventing damage to the float 8 for leveling the ground.

A solenoid 21 is used in place of the horn 14 shown in FIG.
Even if 1a is pivotally connected to the pedal 6, the safety of the earth leveling float 8 can be ensured. That is, the solenoid 2 is activated by the operation of the first and second switches 5 and 13.
1, the pedal 6 is rotated in the direction of arrow 22 and the main clutch is automatically released, so that the vehicle 1 is automatically stopped. Further, the horn 14 may be activated to generate a warning sound at the same time as the main clutch is released.

[Effects of the Invention] As explained above, according to the present invention, when the main change lever is set to the reverse speed position, the actuating mechanism is activated by the movement in which the rear part of the soil leveling float plunges into the field and the tip thereof rises. Since the structure is configured to issue a warning and release the main clutch, the operating mechanism is automatically activated by the abnormal pressure applied to the ground leveling float when the aircraft is tilted backwards, so that the leveling float due to forced backward movement is automatically activated. damage can be prevented.

[Brief explanation of drawings]

Figure 1 is a side view showing how the riding rice transplanter according to the present invention is introduced into a field, Figure 2 is a plan view showing the setting position of the main change lever, and Figure 3 is a side view showing the tip of the soil leveling float. 4 is a perspective view of the same as above, and FIG. 5 is an electric circuit diagram provided in the riding type rice transplanter of the present invention. 1... Travel vehicle, 2... Lift mechanism, 3... Planting work machine, 4... Main change lever, 5... First switch, 6... Pedal, 8... Land leveling float, 9... Bracket, 11...Main body, 12...
Telescopic mechanism, 13... second switch, 14... horn, 16... ridge, 17... field, 21... solenoid.

Claims (1)

[Claims] 1. A planting work machine is connected to the rear of the traveling vehicle body via a lift mechanism so that it can move up and down, and this planting work machine has a float that can move up and down at the front end, and the main change lever is moved backward. An actuation mechanism is provided that operates when the front side of the soil leveling float of the planting work machine rises abnormally when the planting work machine is set at the high speed position, and this actuation mechanism operates the warning device or controls the running state of the traveling vehicle body. A riding-type rice transplanter characterized by the following configurations.