JP2569808Y2 - Transmission of walking type transplanter - Google Patents

Description

[Detailed description of the invention]

[0001]

INVENTION The present invention relates to a walking such as walking type rice transplanter
Field of the Invention The present invention relates to a transmission of a type transplanter .

[0002]

2. Description of the Related Art
This type of traveling vehicle is provided with a transmission that can perform a shift operation between a reverse shift state and a plurality of forward shift states.
However, conventionally, in the transmission, it is necessary to house at least the idler gears corresponding to the number of gears, so that the number of parts is inevitably increased and the structure is complicated, and as a result, the transmission can be reduced in size and weight. There was no reality.

[0003]

This invention SUMMARY OF THE INVENTION The walking-type transfer which can clean out these drawbacks in view of the such circumstances the
It was created for the purpose of providing a transmission of a planting machine , and is provided between an input shaft to which engine power is input and an intermediate shaft.
The reverse gear changes while power is transmitted to the output shaft via the shaft.
Speed change and multiple forward gear shift states
A walking type transplanter comprising a high-speed gear device,
One of the number of forward gear shifts,
Power transmission system from input shaft to output shaft via one intermediate shaft
Another forward gear that is slower than the one forward gear shift
Transmission of power from the input shaft via another intermediate shaft to the output shaft
While the reverse gear shifting is performed in the
A small-diameter gear 16a
And the small diameter gear is set on the intermediate shaft of the slow forward gear shift.
And the transmission gear 7a meshed with the transmission gear on the input shaft side.
Mesh with the input shaft,
Transmission shaft, output shaft via slow forward gear shifting shaft
It is characterized in that it is configured into a system that leads to The present invention is Yotsute this configuration, by reducing the number of gear measuring the reduction of simplification and parts of structures, in which as wear in contributing to reduction in size and weight of the transformer honey Chillon.

[0004]

Next, an embodiment of the present invention will be described with reference to the drawings. In the drawing, 1 is a walking type rice transplanter,
The rice transplanter 1 has an engine 2 mounted on the front side, and a seedling mounting table 3 having a front low and rear height is provided on the rear side. Then, the unit planted seedlings are scraped from the seedling mounting table 3 and planted on the rice field, and their basic configuration is the same as the conventional one.

[0005] Reference numeral 5 denotes a transmission which is integrally assembled with the engine 2. The transmission 5 includes first to fifth transmission shafts 6, 7, 7 in a case 5 a.
8, 9, 10 and the first axis ("input" of the present invention)
The engine power input by 6 is transferred to the third axis
(Corresponding to the "output shaft" of the present invention) A structure for outputting to the traveling system from the sprocket 8a provided at the outer end of the shaft 8 and to the planting system from the sprocket 9a provided at the outer end of the fourth shaft 9 However, an intermediate shaft for relaying power transmission from the engine 2 to the first shaft 6 is constituted by a pump shaft 11 a of the hydraulic pump 11.

On the other hand, a transmission lever 12 has a base end rotatably supported so that the transmission lever 12 can reciprocate in one direction, and a plate 12a is integrated with the base end. A pin 12b provided on the plate 12a is engaged with a U-shaped member provided on the base end of the shifter shaft 13. The shift operation positions of the shift lever 12 include reverse (R), neutral (N), and work traveling (F).
1), road running (F2) is set, and the work running area is set wide so that it can be used also as an inter-stock shift operation area described later.

[0007] The tip end of the shifter shaft 13 is fitted into the case 5a of the transmission 5 so as to be movable left and right, and a shifter fork 14 is integrally provided at the tip of the shifter fork. And a transmission gear 16 rotatably fitted to the fifth shaft 10 so as to be spline-fitted with the gears 15 and 16 so that both gears 15 and 16 can be shifted simultaneously.

The reverse position (R) of the transmission lever 12
In the shift operation state corresponding to the above, the engine power input to the first shaft 6 is transmitted to the cylindrical transmission gear 15 and the cylindrical transmission gear 15.
Large-diameter transmission gear 16 which always meshes with the first gear 15a
When the large diameter input gear 7a of the second shaft 7 meshed with the small diameter gear 16a of the formed in the large-diameter gear 16, the third shaft 8 which always meshes with the output gear 7b of the small-diameter second axis 7 Input gear 8
via the b and summer to transmission to the third axis 8, also in the shift operating state corresponding to the neutral position of the shift lever 12 (N), the large diameter of the small-diameter gear 16a and a second shaft 7
Is disengaged from the input gear 7a to cut off the power transmission. Further, in a slow shift operation state corresponding to the work traveling position (F1) of the shift lever 12, the input gear 7a of the second shaft 7 meshed with the cylindrical speed change gear 15 and the second gear 15b of the cylindrical speed change gear 15. And the output gear 7 of the second shaft 7
b, the engine power is transmitted to the third shaft 8 via the input gear 8b of the third shaft 8 which constantly meshes with the transmission shaft b. Further, in a fast shifting operation state corresponding to the road running position (F2) of the shift lever 12, a cylindrical gear 15, a transmission gear 16 which always meshes with the first gear 15a of the cylindrical gear 15, via the input gear 8b of the third axis 8 in which the speed change <br/> gear 16 is meshed The engine power is transmitted to the third shaft 8. In other words, in the reverse speed change state through the transmission path of “first shaft 6 → fifth shaft 10 → second shaft 7 → third shaft 8”, low speed shifting travel is performed . and going through the stage often shifting path than the forward gear state to go through a transmission path of a three-axis 8 "or high-speed shift running" the first shaft 6 → fifth axis 10 → third axis 8 "
Natsute Ri particular name is reversely rotated a third axis 8, and in road shifting state undergoing a transmission path from the "first shaft 6 → fifth shaft 10 → third shaft 8", the speed change gear of the large-diameter 16 is a first gear 15a of the cylindrical transmission gear 15 and an input gear 8 of the third shaft 8
b, and the power is transmitted to the third shaft 8 at the same time, so that the third shaft 8 is rotated at a higher speed than in the state of the work traveling speed change via the second shaft 7 which is the reduction shaft . The transmission gear 16 is configured to be used in both a shift operation state corresponding to the reverse position (R) of the shift lever 12 and a high-speed shift operation state corresponding to the road traveling position (F2). Have been.

On the other hand, 9b and 9c are the fourth shaft 9 respectively.
The first and second inter-gear gears 9b and 9c have different numbers of teeth. However, when the shift lever 12 is operated in the work operation range, the cylindrical gear is changed. The power transmission to the fourth shaft 9 is relayed by selectively meshing the first gear 15 a and the second gear 15 b of the gear 15.

In the embodiment of the present invention constructed as described above, the small-diameter gear 16a integral with the speed change gear 16 is interposed in the transmission path in the speed change operation state corresponding to the reverse position (R) of the speed change lever 12. Although the third shaft 8 is rotated in the reverse direction, the transmission gear 16 itself is moved to the road traveling position (F2).
In the high-speed shift operation state corresponding to the above, the transmission gear is interposed in the transmission path, and in this state, the first gear 15a of the cylindrical transmission gear 15 and the input gear 8b of the third shaft 8 are simultaneously meshed to The shaft 8 is rotated at high speed. That is, the fifth shaft 10 on which the transmission gear 16 is supported is connected to the reverse transmission shaft and the high speed shaft.
Will be also used for forward shifting in the (road) axis that, as a result, the obtained scale reduction simplified structure axis <br/> number in the unnecessary Batsukuaidora axis dedicated transformer Mitsu Chillon small type and weight of the 5 can be achieved.

Moreover, in a walking rice transplanter, a low-speed shift (F1) is normally used for work traveling, and the reverse position (R) and the road traveling position (F2) are usually used less frequently.
Therefore, the transmission gear 16 is used for both the reverse shift and the forward shift.
Sometimes, as in the case of combining with low-speed shifting
A.Durability is avoided by increasing the frequency of use
In addition, there is no inconvenience that a problem arises , and effective parts can be shared. Besides, fast forward gear shifting
The reverse speed change via the speed change shaft 10 for performing
From the first shaft 6 which is the fifth shaft 10 with a fast forward shift.
A reduction system leading to the large-diameter transmission gear 16, provided on the fifth shaft 10
From the small diameter gear 16a to the second shaft 7 having a slow forward shift.
Large-diameter input that meshes with the input side transmission gear 15
Reduction system to gear 7a, and second shaft 7 for slow forward shifting
From the small diameter output gear 7b to the large diameter input gear 8 of the output shaft 8.
As a result of the three-stage deceleration of the reduction system leading to b,
Sufficient reduction ratio can be secured

[0012]

[Effects] In summary, since the present invention is constructed as described above, the reverse gear shift and the plurality of forward gear changes are performed.
Reverse gear shifting while being able to perform speed changes with high speed
Performs the fast forward gear shift among the plurality of forward gear shifts.
Change the transmission gear provided on the intermediate shaft of the
That it is engaged with the speed change gear of the intermediate shaft
In other words, the shifting shaft for performing a fast forward gear shift is backed up.
Also used as an idler shaft. Therefore, the reverse gear
The necessity of a tuy idler shaft can be eliminated, reducing the number of parts and
Is it possible to simplify the structure?
Contributes to the reduction of mold weight. In addition, a fast forward gear shift is performed.
The reverse shift via the speed change shaft for
Reduction system leading to intermediate shaft for forward shift, intermediate shaft for fast forward shift
From the small diameter gear provided to the intermediate shaft for slow forward shifting
To the transmission gear that meshes with the transmission gear on the input shaft side.
Speed system, and slow forward speed reduction from intermediate shaft to output shaft
Sufficient deceleration for three-stage deceleration of the speed system
Ratio, and the back idler shaft
Interchangeable with the intermediate shaft for low fast forward gear shifting,
Inconveniences that cause a problem in durability can also be avoided .

[Brief description of the drawings]

FIG. 1 is a side view of a walking rice transplanter.

FIG. 2 is an internal side view of the transmission.

FIG. 3 is a developed sectional view of the same.

FIG. 4 is a sectional view of an essential part of the same.

FIG. 5 is a front view of a shift lever.

FIG. 6 is a side view of the same.

FIG. 7 is an operation explanatory view showing a reverse shift state.

FIG. 8 is an operation explanatory view showing a work traveling shift state.

FIG. 9 is an operation explanatory view showing a road traveling speed change state.

[Explanation of symbols]

Reference Signs List 1 rice transplanter 5 transmission 12 shift lever 16 shift gear 16a small diameter gear

Claims (1)

(57) [Scope of request for utility model registration] 1. An intermediate position from an input shaft to which engine power is input.
The reverse gear changes while power is transmitted to the output shaft via the shaft.
Speed change and multiple forward gear shift states
A walking type transplanter comprising a high-speed gear device,
One of the number of forward gear shifts,
Power transmission system from input shaft to output shaft via one intermediate shaft
Another forward gear that is slower than the one forward gear shift
Transmission of power from the input shaft via another intermediate shaft to the output shaft
While the reverse gear shifting is performed in the
A small-diameter gear is attached to the transmission gear (16) provided on the intermediate shaft of the transmission.
(16a), the small-diameter gear is shifted to a slow forward gear
Large gear that is provided on the intermediate shaft of
Gear gear (7a) having the same diameter as the input shaft.
From fast forward gear shift shaft to slow forward gear shift
A transmission for a walking type transplanter, wherein the transmission is configured to be a system extending to an output shaft via a speed shaft .