JPH0220Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a riding type rice transplanter in which an interplant transmission device for changing the drive speed of the seedling planting device relative to the traveling speed is provided below the footrest step.

Conventionally, in the above-mentioned riding-type rice transplanter, a manual operating tool for the interplant transmission is provided below the step so that it can be operated from the side and outside of the step. I had the inconvenience of not being able to operate the device while it was on.

For this reason, there is also a means to provide a manual operating tool for inter-station gear shifting above the step in a state in which it is interlocked and connected to the inter-station transmission device via a link mechanism, etc., so that the operator can operate it while riding on the vehicle body. However, this method has the disadvantage of complicating the structure.

The present invention was devised in view of the above-mentioned circumstances, and its purpose is to make it possible to easily operate the manual operating tool for the inter-stock transmission while the operator is on board, by making effective use of the original configuration. The point is that it is provided in a state where it can be operated.

The configuration of the present invention is that in the riding type rice transplanter mentioned above,
A manual operation tool for the inter-stand transmission is located below the footrest step and near an opening formed therein for inserting a pedal, and a space for inserting a hand is formed in the opening. .

In other words, we focused on the fact that the footrest step is formed with an opening for inserting the pedal, and by making effective use of this, we simplified the linkage structure between the manual operating tool for the inter-station transmission and the inter-station transmission. Although the foot rest step is positioned below the footrest so that the foot rest can be easily operated, the operator is also intended to be able to operate it through the pedal insertion hole. With a simple modification, it is now possible for workers to shift gears while remaining on the vehicle.

Embodiments of the present invention will be described in detail below based on the drawings.

As shown in FIGS. 1 and 2, it is equipped with a pair of left and right front wheels 1, 1 that can be driven and rotated and whose direction can be changed, and a pair of left and right rear wheels 2, 2 that can be driven and rotated,
Engine 3 and transmission case 4, driver's seat 5
an inclined seedling platform 6 that moves back and forth horizontally at a constant stroke with four pine-shaped seedlings W placed side by side in the rear of the passenger vehicle body, which is located in front of the vehicle and at the front end of the vehicle; Seedlings equipped with four planting claws 7 that take out and plant one seedling from the lower end of each pine-shaped seedling W, and three floats 8 arranged side by side at appropriate intervals in the lateral direction. The planting device 9 is connected to be movable up and down via a pair of upper and lower lifting links 10a and 10b, and a hydraulic cylinder 11 for lifting and lowering the seedling planting device is connected to the lower lifting link 10.
b is installed in a state where it can be operated to swing up and down with respect to the vehicle body,
In addition, in order to plant four seedlings in sequence as the aircraft advances, and to maintain a constant planting depth,
Further, in order to avoid contact of the seedling planting device 9 with the ground when traveling on a headland or on a road, the seedling planting device 9 is configured to be able to be raised and lowered relative to the vehicle body.

As shown in FIGS. 2 and 3, a belt tension type transmission clutch 1 is used to intermittently transmit the output of the engine 3 to the transmission case 4.
2, and an operating lever 13 and a foot pedal 14 are provided therefor. Inside the transmission case 12, there is a traveling transmission 15 that switches the traveling speed to two forward speeds and one reverse speed by sliding the sliding gear 15a, a front wheel differential transmission 16, and a sliding gear 17a. An inter-plant transmission device 17 that changes the drive speed of the seedling planting device 9 relative to the traveling speed by sliding, and an interlocking type planting device that intermittents the driving of the seedling planting device 9 by sliding the movable clutch piece 18a. a safety clutch 19 that automatically disconnects and operates when the drive torque of the seedling planting device 9 exceeds a set value;
Further, an interlocking type differential lock piece 20 is provided for switching the front wheel differential transmission 16 between a state in which differential rotation is allowed and a state in which differential rotation is inhibited. or,
A rear wheel drive transmission shaft 23 is provided to transmit the power of the front wheel differential transmission 16 to the input bevel gear 22 in the rear wheel drive case 21, and the output of the input bevel gear 22 is transmitted to the left and right rear wheels 2, 2. Specifically, steering clutches 24, 24 are provided which can be operated on and off individually by sliding movable clutch pieces 24a, 25a. Furthermore, an output shaft 25 for transmitting the power of the planting clutch 9 to the rear of the vehicle body is provided, and a transmission shaft 26 for driving the seedling planting device is connected to the vehicle body side output shaft 25 and the input shaft 27 of the seedling planting device 9, respectively. are interlocked and connected via universal joints 28, 28 so as to rotate together.

A footrest step 29 is provided at the lower front portion of the driver's seat 5, and a pair of left and right auxiliary footrests 30, 30 are provided at the front end above the seat.
are each bolted to the front end of the footrest step 29. The foot pedal 14 for operating the transmission clutch, and the steering clutch 2 for the rear wheels.
a pair of steering pedals 31A, 31B connected by rods to the respective support rods 14a, and
31a, 31b are pivotally supported on support shafts 32, 32 supported on the mission case 4, and a pair of left and right pedal insertion openings 33, 33 are provided at the connecting portions of the footrest step 29 and both auxiliary steps 30, 30. It has been formed.

To configure the inter-stock transmission 17 located below both the steps 29 and 30, as shown in FIG. 5, the sliding gear 17a is provided with two large and small gear parts, A spline connection is made to the passive side rotating shaft 34, and the driving side rotating shaft 3
5, a large diameter gear 36a that can freely engage with the small diameter gear portion;
And, two small diameter gears 36b and 36c which can freely engage with the large diameter gear part and have different numbers of teeth are fixed, so that the variable neutral state N, high speed drive state H, medium speed drive state M, and low speed It is arranged so that it can be switched to the driving state L. And the sliding gear 17a
A shift fork rod 37 is slidably supported through the transmission case 4, and a spring ball 38 for locking and fixing the shift fork rod 37 is attached to the transmission case 4, and the shift fork rod 37 is pushed. A manual operating tool 39 for pulling operation is fixed to the shift fork rod 37 in a state below the footrest steps 29, 30 and near the steering pedal insertion opening 33, and further, Both pedals 3 in 33
Support rods 31a, 31b for 1A, 31B
A manual insertion space S is formed between the two, so that an operator can change the speed while remaining on the vehicle body. Further, on the auxiliary step 30, there are marks N, for displaying the gear shift operation position.
A display board 40 marked with H, M, and L is attached.

Next, another embodiment will be described based on FIG. 6.

That is, the manual operating tool 39 is externally fitted and screwed onto the shift fork rod 37, and the mission case is held in a state in which the positioning locking member 41 of the manual operating tool 39 is engaged to allow rotation of the operating tool 39. 4
Further, a plurality of concave grooves 42 for rod position indication are formed in the shift fork rod 37, and by rotation of the manual operating tool 39,
The shift fork rod 37 can be slid.

In carrying out the present invention, the manual operation tool 39 can be changed to various configurations, such as a swing lever that locks and slides the shift fork rod 37.

Further, as the pedal insertion opening 30, for example, the clutch pedal 14 insertion opening 33 described in the embodiment may be used.
Various openings can be used, such as using a.

[Brief explanation of the drawing]

Figure 1 is a side view of the riding rice transplanter, Figure 2 is a plan view of the pedal attachment part, Figure 3 is a side view of the same part, and Figure 4 is a side view of the riding rice transplanter.
The figure is a schematic diagram of the transmission system, FIG. 5 is a cross-sectional plan view of the inter-stock transmission, and FIG. 6 is a cross-sectional plan view of another embodiment. 9... Seedling planting device, 17... Interplant transmission device, 2
9... Foot rest step, 33... Pedal insertion opening.

Claims (1)

[Scope of utility model registration request] A riding type rice transplanter is provided with an inter-plant transmission device 17 for changing the drive speed of the seedling planting device 9 relative to the traveling speed below the footrest steps 29, 30, and a manual operating tool for the inter-plant transmission device 17. 3
9 below the footrest steps 29, 30,
A riding-type rice transplanter characterized in that it is located near a pedal insertion opening 33 formed therein, and a space for hand insertion is formed in the opening 33.