JPH057406A - Rear wheel driving mechanism of main transplanter body of riding-type rice transplanter - Google Patents

Abstract

PURPOSE:To reduce the size of a rear wheel driving mechanism by rotatably extending a driving shaft for the right and left rear wheels between a transmission at the front part of the machine body and the right and left rear axle cases at the back of the body. CONSTITUTION:Driving shafts 14,14 for the right and left rear wheels are rotatably extended between a transmission 5 at the front part of the machine body and the right and left rear axle cases 12,12 at the back of the body. The transmission is directly connected in interlocked state to the right and left rear axle cases to enable the driving of the right and left rear wheels 80, 80 with the right and left rear wheel driving shafts.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rear wheel drive mechanism in a rice transplanter body of a passenger rice transplanter.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 12, a rear wheel drive mechanism in a rice transplanter main body of a passenger rice transplanter has a left and right rear axle cases (b) in which left and right sides of a transmission (a) and left and right rear axles are axially supported. A chain transmission mechanism (c) (c) is interposed between the transmission mechanism (b) and (b), and power is transmitted by the transmission mechanism (c) (c).

[0003]

However, in the conventional example described above, the chain transmission mechanisms (c) and (c) are provided between the transmission (a) and the left and right rear axle cases (b) and (b). Therefore, a large number of parts such as a chain and a sprocket are required, resulting in a complicated structure as a whole and a high cost.

[0004]

According to the present invention, a riding rice transplanter comprising a self-propelled rice transplanter main body and a planting device connected to the rear of the rice transplanter main body in a vertically movable manner, is provided with a transmission at the front of the rice transplanter main body. The left and right rear axle cases having the left and right rear axles are arranged at the rear of the main body of the same plant, and the left and right rear wheel drive shafts are respectively mounted between the transmission and the left and right rear axle cases. It is intended to provide a rear wheel drive mechanism in a rice transplanter body of a riding rice transplanter.

[0005]

The engine power is transmitted to the transmission case, and the speed of the transmission is changed. Then, the left and right rear wheel drive shafts connected to the transmission are rotated, and the left and right rear wheel drive shafts drive the left and right rear axle shafts provided in the left and right rear axle cases.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail with reference to the drawings. In FIG. 1, (A) is a riding rice transplanter, and a planting device (2) is provided behind a self-propellable rice transplanter body (1). Are connected via a lifting link mechanism (3) so that they can be lifted and lowered.

In the rice transplanter body (1), a prime mover part (4) is mounted on the upper surface of the front frame (a), and the front part of the transmission (5) is connected to the rear end of the front frame (a). The front wheels (7) and (7) are installed on the left and right sides of the front part of the transmission (5) via the left and right front axle cases (6) and (6), and the lower connecting frame is installed at the rear part of the transmission (5). The front end of (8) is connected, the front end of the upper connecting frame (9) is connected to the rear part, and the rear end of each upper connecting frame (8) (9) is connected by the standing frame (10) to the side surface. Articulated frame (11)
Is formed.

Left and right rear axle cases (12) and (12) are provided on the left and right rear lower ends of the coupling machine frame (11) so as to project outward, and the left and right rear wheels (12) and (12) are provided through the rear axle cases (12) and (12). 13) (1
3) is pivotally supported, and the left and right rear wheel drive shafts (14) (1) are respectively provided between the rear axle case (12) (12) and the transmission (5).
4) is mounted.

The elevating link mechanism (3) has a vertical frame (10).
The front end of the upper and lower links (15) and (16) and the rear end of the
A parallel lifting link mechanism is supported by the planting frame (17) of (2) to extend and retract the lifting cylinder (19) provided between the rear end of the transmission (5) and the lift arm (18). By operation, it supports the planting device (2) so that it can move up and down.

In the planting device (2), the seedlings on the seedling stand (21) provided above the planting frame (17) forming the parallel lifting link mechanism are mounted on the rear end of the planting mission case (20). Planted nails (2
It is configured to be planted in a field by rotating the planting of 2), and the drive of the planting device is adapted to receive power from the transmission (5) via the planting transmission shaft (23).

In the figure, (24) is a front casing which covers the outside of the motor part (4) so that it can be opened and closed, and (25) is the cover (24).
Auxiliary shift lever provided on the left side of the, (26) is the handle, (27)
Is a seat lower casing provided from the lower surface of the motor part (4) to below the seat (28), (29) is a main transmission lever, (30) is a pedal, (31) is a float, and (32) is a belt.

In the riding rice transplanter (A) having such a structure, the gist of the present invention is to provide the left and right rear wheel drive shafts (14) (1) provided between the transmission (5) and the left and right rear axle cases (12, 12).
This is related to the arrangement structure of 4) and will be described in detail below.

That is, as shown in FIGS. 2 and 4, the bevel gears (77) provided at the left and right ends of the rear output shaft (52) of the transmission (5) are protruded from the left and right side surfaces of the transmission case (53). Left and right rear wheel drive shafts (14) (14) are extended diagonally outward from the protrusions (77a) (77a), and left and right rear axle cases (12) (12) are attached to the rear ends of the coaxial (14) (14). The left and right rear wheel drive shafts (14) and (14) are arranged in a substantially C-shape that opens rearward in plan view, thereby reducing the lateral width and front-rear length of the transmission (5). (5) is made smaller and lighter, and the front wheels of the left and right rear wheel drive shafts (14) (14) are prevented from interfering with the front wheels (7) (7), and the left and right rear wheels (13) (13) The amount of overhang from the left and right rear axle cases (12) and (12) can be reduced to provide a structure advantageous in strength.

In the figure, (81) is the left and right rear axle case (1
2) A horizontal frame that connects (12).

Further, as shown in FIG. 5, the rear output shaft (52) is located on the line connecting the front differential shaft (51) and the rear axle (80) in a side view, and the transmission (5) and the left and right rear axle cases are positioned. The height of the member connecting with (12) can be lowered to lower the center of gravity and the running stability can be improved.

6 to 9, the input shaft (54) and the intermediate shaft (5
6) shows the meshing state of the constant mesh four-speed transmission mechanism (B) provided between the input pulley (55) and the left end of the input shaft (54).
One-way clutch (82) on the left side of the input shaft
The first driving gear (83a) is loosely fitted in one direction only via the shaft. A third driving gear (85a) integrally formed with the second passive gear (84b) is rotatably loosely fitted to the right side of the input shaft (54). The first clutch portion (68a) is interposed between the first driving gear (83a) and the second passive gear (84b), and the input shaft (5
The power transmission destination of 4) is the first driving gear (83a) and the second passive gear.
It is possible to switch to (84b).

On the left side of the intermediate shaft (56), the first passive gear (83
The second driving gear (84a) integrally formed with b) is freely rotatably fitted, the third passive gear (85b) is loosely fitted on the right side of the intermediate shaft (56), and the output is output on the right side. Fit the gear (86) onto the intermediate shaft (56).

The second drive gear (84a) and the third passive gear
The second clutch part (68b) is interposed in the middle of (85b), and the power receiving destination of the intermediate shaft (56) can be switched to the second driving gear (84a) or the third passive gear (85b). I have to.

The first, second, and third driving gears and the passive gear are always in mesh with each other, and the first and second clutch portions (6
8a) and (68b) occlusal switching allows the input shaft (54) pulley (5
The power from 5) is transmitted to the traveling transmission shaft (57) and the planted transmission shaft (58) by shifting in four stages as shown in FIGS.

In FIG. 6, the first clutch portion (68a) is the first driving gear (83a) and the second clutch portion (68b) is the third passive gear (8a).
5b) is engaged and the speed is reduced in three stages by the first, second and third original passive gears.

In FIG. 7, the first clutch part (68a) is the second passive gear (84b) and the second clutch part (68b) is the third passive gear.
It engages with (85b) and is decelerated in one step by the 3rd original passive gear.

In FIG. 8, the first clutch part (68a) is the first driving gear (83a) and the second clutch part (68b) is the second passive gear.
The gear is engaged with (84b) and the first original passive gear is used to reduce the speed by one step.

In FIG. 9, the first clutch portion (68a) is the second passive gear (84b) and the second clutch portion (68b) is the second driving gear.
It engages with (84a) and is performing one-step deceleration by the 2nd original passive gear.

As described above, since the two shafts and the three sets of meshing gears enable four-step deceleration, the structure is simplified and the transmission (5) can be made smaller and lighter.

Further, FIG. 10 shows a shift pattern of the main transmission lever (29). As shown in FIG. 11, a guide plate (87) is provided on the left side of the seat (28) so as to project from the guide plate (87). A substantially h-shaped guide hole (88) is drilled, and the middle of the main speed change lever (29) is inserted through the hole (88). When the lever (29) is placed in the (N) position, it is neutral. , Put it in the (H) position for high speed on the road, (L ₁ )
When it is placed in the (L ₂ ) position, it is set to the first and second low speeds with planting, and when it is placed with (R ₁ ) and (R ₂ ), it moves back. From the 2nd speed, it is possible to reverse with one movement of the main speed change lever (29), and the forward / backward switching operation of the main speed change lever (29) for changing the direction during planting work can be performed quickly and easily. Therefore, the work efficiency can be improved.

[0026]

According to the present invention, in a rice transplanter main body of a passenger rice transplanter, a transmission is provided at the front part of the rice transplanter main body, and left and right rear axles having rear left and right axles at the rear of the rice transplanter main body (1). With rear axle case, and
Since the left and right rear wheel drive shafts are mounted between the transmission and the left and right rear axle cases, the transmission and the left and right rear axle cases can be directly interlocked with each other, and therefore the rear wheel drive mechanism can be made compact. It is constructed and can be manufactured at low cost.

Further, according to the present invention, mud is less attached to the left and right rear wheel drive shafts, and the washing work after the rice planting work is easy.

[Brief description of drawings]

FIG. 1 is an overall side view of a riding rice transplanter according to the present invention.

FIG. 2 is a plan development view of a transmission.

FIG. 3 is a cross-sectional side view showing an arrangement state of a transmission shaft.

FIG. 4 is a schematic plan view of the rice transplanter body.

FIG. 5 is a schematic side view of the same.

FIG. 6 is an explanatory view of a meshed state of a four-speed transmission mechanism.

FIG. 7 is an explanatory diagram of a meshed state of a four-speed transmission mechanism.

FIG. 8 is an explanatory diagram of a meshed state of a four-speed transmission mechanism.

FIG. 9 is an explanatory diagram of a meshed state of a four-speed transmission mechanism.

FIG. 10 is a plan view of a main shift lever guide plate.

FIG. 11 is a side view of the same.

FIG. 12 is a schematic plan view showing a conventional structure.

[Explanation of symbols]

 (5) Transmission (12) (12) Left and right rear axle cases (14) (14) Left and right rear wheel drive axles (80) (80) Left and right rear axles

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hiroshi Kitagawara 2-18-1 Inadera, Amagasaki City, Hyogo Prefectural Kanzaki Luxury Machinery Works Co., Ltd.

Claims (1)

What is claimed is: 1. A riding rice transplanter comprising a self-propelled rice transplanter main body (1) and a planting device (2) connected to the rear of the rice transplanter main body (1) so as to move up and down. The transmission (5) is installed in the front part, and the left and right rear axles (80) are installed in the rear part of the Dodder transplanter body (1).
The left and right rear axle cases (12) and (12) having (80) are arranged, and the left and right rear wheel drive shafts (14) are respectively provided between the transmission (5) and the left and right rear axle cases (12) and (12).
A rear wheel drive mechanism in a rice transplanter main body of a riding rice transplanter characterized by having (14) mounted on the shaft.