JPH0142440Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a reaping machine comprising a running section consisting of a single running wheel and a pre-processing section that performs a reaping operation.

[Prior art and problems to be solved by the invention] Conventionally, in this type of single-wheeled reaping machine, the transmission shaft that transmits power from the transmission case on the running section side to the pre-processing section side is connected to the machine body. center,
In other words, since it was placed above the running wheels in the front-rear direction, the transmission shaft had to be located at a high position, which resulted in a high center of gravity, and since it was a single wheel, it was still less stable. The drawback was that the aircraft became more unstable and lacked safety.

Therefore, the transmission shaft is provided above the axle-side transmission case disposed on either the left or right side of the running wheel.
For example, it is possible to lower the center of gravity of the machine by configuring the transmission shaft and the axle-side transmission case to overlap vertically and positioning the transmission shaft at a lower position than when the transmission shaft is arranged above the running wheels. It has been proposed as shown in Publication No. 57-22739. however,
Reapers need to adjust the cutting height according to field conditions such as wet fields by vertically adjusting the running section relative to the pre-processing section, but the mowing machine has a transmission shaft and an axle-side transmission case that are wrapped vertically. This is not an exception, even if
Therefore, in such a device, a power distribution case section is provided to which power from the engine is input, and the power is distributed from the power distribution case section to the axle side transmission case section and the transmission shaft for transmitting power to the pretreatment section. The structure must be designed so that the running section can be adjusted up and down relative to the pretreatment section, and as a result, the running section requires two cases: a power distribution case and an axle-side transmission case. However, the structure is complicated, reducing the weight and compactness, and in one case, a new drawback arises in that power cannot be transmitted to the axle side and the transmission shaft side.

[Means for Solving the Problems] The present invention was devised in view of the above-mentioned circumstances with the aim of providing a reaper that can eliminate these drawbacks. The running part is located on either the left or right side of the running wheels, and the rear end receives power from the engine, and the front end receives power from the engine. A reaper including a transmission case provided with an axle for transmitting power to the running wheels, the inner end of the counter shaft protruding from the inner surface of the transmission case on the running wheel side; A transmission shaft whose rear end is interlocked and connected to the protruding inner end of the countershaft for transmitting power to the pre-processing section is connected to the transmission case and the transmission case so that it overlaps with the transmission case and the travel wheel when viewed from the side. It is characterized in that it is disposed in the front-rear direction, passing between the two.

The present invention allows power to be taken out from one transmission case to the axle side and the preprocessing section side, but the transmission shaft is located at a lower position to lower the center of gravity of the machine and allow for stable running. This is what I did.

[Example] Next, an example of the present invention will be described based on the drawings. In the drawing, reference numeral 1 denotes a running body of a reaping machine, and the running body 1 includes a pre-processing section 2 for reaping a predetermined amount of stem culms to be planted in the field, tying them together and discharging them to the side of the machine, and a wide section. The running section 4 is equipped with a single running wheel 3 that runs under low pressure.

To explain the pre-processing section 2, a pair of left and right sled bodies 9 and 10 each having a sharp tip are disposed approximately equidistantly from the center line LL in the width direction of the machine body 1 with the cutting blade 5 in between. It is set up. The lower side of the raising body 6 is supported by fixing the lower back surface of the raising body 6 to the distal end of one of the sled bodies 9 via a fixing member 6a. A grass cutting body 11 is further integrally fixed to the tip of the sled body 9. Also,
At the tip of the other sled body 10, there is a raising guide body 7 that functions as a weed cutting body corresponding to the grass cutting body 11.
The lower part of the is integrally fixedly supported. Furthermore, a cutting blade 5 and a binding device 8 are attached to the rear upper surface of the sled body 10, thereby firmly connecting the left and right rear sides of the sled bodies 9 and 10. As described above, an integrated pre-processing section 2 is constituted by the pulling body 6, the pulling guide body 7, the binding machine 8, the cutting blade 5, etc. which are connected and supported by the sled bodies 9 and 10. has been done.

Reference numeral 12 denotes an operating handle, and the operating handle 12 is installed obliquely from the lower front of the running section 4 to the upper rear of the running section 4 so as to sandwich the left and right sides of the running section 4, and its left and right front ends are They are bent downward to form mounting portions 12a, respectively. Mounting part 1
2a is attached and fixed to mounting portions 9a and 10a which are bent at the rear end portions of both the sled bodies 9 and 10, respectively, in the shape of a rising rear.
A sled body 9 to which a pulling guide body 7, a binding machine 8, etc. are attached;
10 is integrally supported by the operating handle 12.

Reference numeral 13 denotes a guide plate provided on the cutting and tying unit side to guide the stem culm cut by the cutting blade 5 to the tying machine 8 side. The front end of a mounting bracket 14a is fixed to the mounting bracket 14a, which is used for the fuel tank 14 provided therein and has a ball loading portion 14b for a binding cord formed on the front side. Also,
Mounting bracket 1 whose front end is fixed to guide plate 13
4a is supported by an auxiliary rod 12b installed between the left and right operating handles 12, and is integrated with the preprocessing section 2.

The engine 15 provided on the running section 4 side is arranged below the fuel tank 14 and above the running wheels 3, but in this embodiment, the engine 15 is arranged on the left side of the running wheels 3. It is fixed to the upper right wall (inner wall) on the rear end side of the transmission case 16. Then, the drive shaft 15a of the engine 15 that entered the transmission case 16
is connected to the counter shaft 18 via a clutch mechanism 17 so as to be disconnectable. 15b is the drive shaft 1
5a is a fixed gear, 17a is a gear on the clutch mechanism 17 side that always meshes with gear 15b, 17b is a gear that always meshes with gear 18a on the counter shaft 18 side,
17c and 17d are clutch pawls. Furthermore, gears 18b and 18c are spline-fitted to the counter shaft 18 and are movable in the axial direction by the operation of a shifter (not shown) in conjunction with the operation of the traveling speed change lever 19. Further, gears 20a and 20b are fixed to the shaft 20, and when the shifter operates, the gear 18
By meshing gear b with gear 20a or gear 18c with gear 20b, two forward speeds can be achieved. On the other hand, gears 21a and 21b that rotate integrally are rotatably attached to the back shaft 21, but the gear 21b is always meshed with the gear 20b, and the gear 18c is meshed with the gear 21a by the operation of the shifter. In particular, it is now possible to shift to one reverse speed. On the other hand, a gear 3b fixed to an axle 3a for the running wheel 3 supported on the front end of the transmission case 16 is always meshed with a gear 22a fixed to the shaft 22. The shafts 20 and 22 are interlocked and connected so as to be decelerated by a chain 23 suspended between sprockets 22c and 22b.

On the other hand, the counter shaft 18 extends from the right side wall (inside wall) of the transmission case 16 to the running wheel 3.
It protrudes toward the side, and a bevel gear 18d is fixed to the protruding end. 24 is a transmission shaft that transmits power from the traveling section 4 to the pretreatment section 2 side;
The transmission shaft 24 is located between the running wheel 3 at the center of the fuselage and the transmission case 16 on the side in a plan view, and extends in the front-rear direction so as to wrap around the running wheel 3 and the transmission case 16 in a side view. Although the transmission shaft 24
is disposed closer to the traveling wheels 3 than to the transmission case 16, and a bevel gear 24a provided at the rear end of the transmission shaft 24 is constantly meshed with the bevel gear 18d.

The cylindrical cover body 25 is disposed in the front-rear direction passing between the transmission 16 and the running wheels 3, covers the transmission shaft 24 eccentrically toward the running wheels 3, and serves as a support member for the running section 4. Although,
The middle part of the cylindrical cover body 25 is integrally fixed to the middle part of the left operating handle 12 via a fixing member 25a, and the front end part is fixed to the gear case 26 of the reaping binding part 2. Cylindrical cover body 25
A bevel case 25b that houses the bevel gears 18d and 24a is integrally formed at the rear end.
One end of the bevel case 25b is rotatably fitted to the transmission case 16, and the running section 4 can move up and down relative to the pretreatment section 2 about the axis of the counter shaft 18. It is becoming possible to do this. Then, by tightening and fixing the adjustment bolt 28 on the transmission case 16 side to the adjustment plate 27 with the elongated hole 27a provided in the cylindrical cover body 25 at an arbitrary position, the traveling section 4 can be adjusted to the pretreatment section 2.
The height can be adjusted to the desired height. The gear case 26 also transfers the power from the engine 15 transmitted through the transmission shaft 24 to the binding machine 26.
and a cylindrical cover body 29 for a transmission shaft that transmits power from the gear case 26 to the pulling body 6 side.
As a result, the rear end side of the raising body 6 is supported.

In the figure, 30 is a lifting claw, and 31 is a reinforcing rod that reinforces the fixation between the cylindrical cover body 25 and the gear case 26.

In the embodiment of the present invention configured as described above, the traveling body 1 includes a lifting body 6 and a lifting guide body 7.
The stem culms pulled up by the cutting blade 5 and cut by the cutting blade 5 are tied to the binding machine 8.
It is composed of a pretreatment section 2 that is tied together and discharged to the outside of the machine, and a running section 4 consisting of a single running wheel 3. The transmission shaft 24 is located between the running wheel 3 and the transmission case 16 on the side of the running wheel 3 in a plan view, and is located between the running wheel 3 and the transmission case 16 in a side view. It is located in a low, wrapped position. Therefore, the transmission shaft 24 is located at a lower position than the conventional one disposed above the running wheels 3, and the center of gravity of the machine is lowered, improving the balance of the machine and improving running stability.

Moreover, power can be taken out from the transmission case 16 to the transmission shaft 24 because the transmission shaft 24 is arranged on the side of the transmission case 16 on the running wheel side.
The transmission shaft 24 can be taken out directly from the inner end protruding from the case of the counter shaft 18 provided in the counter shaft 18, and therefore the transmission shaft 24 can be configured to be relatively rotated in the vertical direction around the rotation fulcrum of the counter shaft 18. The configuration allows power to be taken out from a pair of transmission cases 16 to the running wheels 3 and the pre-processing section 2, and can easily accommodate vertical adjustment of the running section 1 with respect to the pre-processing section 2. This eliminates the need for a two-case structure in which the transmission shaft is placed above the axle-side transmission case.

On the other hand, in this device, the transmission shaft 24, which is relatively long and heavy, is inserted through the cylindrical cover body 25, and the cylindrical cover body 25 connects the pretreatment section 2 and the running section 4 to the operating handle 12. The power transmission shaft 24 has to be made thicker to some extent because it has to be supported along with the cylindrical cover body 25, but since the transmission shaft 24 is eccentric to the center of the fuselage with respect to the axis of the cylindrical cover body 25, It is possible to improve left and right balance.

Further, the cutting height can be adjusted by adjusting the tightening position of the adjustment bolt 28 to the adjustment plate 27.
In this case, the engine 15 has a running section 4 that moves up and down with respect to the preprocessing section 2 using the counter shaft 18 as a fulcrum.
It also moves up and down and tilts. For this reason, when the fuel tank 14 is integrally provided on the running section 4 side as in the conventional case, the fuel tank 14 will tilt as the running section 4 moves up and down.
There is a risk that fuel may spill out from the fuel tank 14, but in this embodiment, the fuel tank 14 is configured to be integrated with the pretreatment section 2 side, so the temporary running section 4 can be moved up and down. However, the fuel tank 14 will always be maintained in a horizontal position,
Therefore, blowing out of fuel from the fuel tank 14 can be effectively prevented. Furthermore, in this case, since the space between the engine 15 and the fuel tank 14 can be opened, the effect of heat from the engine 15 and the like on the fuel tank 14 can be reduced as much as possible.
Also, a mounting bracket 14a for the fuel tank 14
In the case where a winding ball of the binding string is provided at the end, the relationship between the winding ball and the tying machine 8 is always constant, so that the winding string can be smoothly fed out, and there is little damage to various parts.

Furthermore, in transmission 16,
Conventionally, power is transmitted from the running wheels 3 to the axle 3a by connecting the axle 3a and the shaft one shaft in front of it using a chain transmission mechanism, in order to downsize the transmission mechanism and simplify the gear ratio. The sprocket was made to have a considerably large diameter to provide deceleration transmission, but as a result, the lower side of the transmission case 16 protruded significantly downward, and the distance between the surface and the transmission case 16 became small. Therefore, in wet fields, etc., the lower part of the transmission case 16 tends to sink into the rice field, resulting in a disadvantage that running performance in wet fields is significantly reduced. however,
In this embodiment, gear reduction is performed between the axle 3a and the shaft 22 one shaft in front of the axle, and two-stage reduction is performed in which the shaft 22 and the shaft 20 one shaft in front of the axle 3a are chain-reduced. The diameter of the gear 3b on the axle 3a side can be made smaller than that of the conventional one, and the weight of the case is therefore reduced, and the lower part of the transmission case 16 is also made smaller accordingly, making it easier to fit the field. The interval becomes large. Therefore, even when driving in wet fields, the problem of the lower part of the transmission case 16 sinking into the rice field can be effectively prevented, and the driving performance in wet fields is improved.

[Operations and Effects] In summary, the present invention is constructed as described above, so the transmission shaft is located at a low position on the side where it wraps around the transmission case and the running wheels when viewed from the side, rather than above the running wheels. This allows the center of gravity of the aircraft to be lowered, resulting in excellent running stability.

Moreover, the power is taken out from the transmission case to the transmission shaft through the inner end of the transmission shaft protruding from the case of the countershaft, which is attached to the transmission case with a general-purpose structure, on the inner surface of the transmission case on the running wheel side. Can be taken out directly. Therefore, even with a simple structure that does not require a complicated mechanism, in which the transmission shaft is assembled to the transmission case so that it swings up and down around the axis of the counter shaft, it is possible to adjust the cutting height, etc. Therefore, it is possible to immediately and easily respond to vertical adjustment of the traveling section relative to the pretreatment section, and the transmission system can be constructed with a two-case structure, such as one in which the transmission shaft is placed above the transmission case on the axle side. There is no need to do this, and a simple one-case structure is sufficient, making the structure simple and greatly contributing to making it lighter and more compact.

[Brief explanation of drawings]

The drawings show an embodiment of the reaper according to the present invention, in which Fig. 1 is an overall side view of the reaper, Fig. 2 is an overall plan view of the same, and Fig. 3 is an exploded view of the transmission. , FIG. 4 is an enlarged view of the main part, FIG. 5 is an enlarged plan view of the main part, and FIG. 6 is a vertical sectional view of the main part. In the figure, 1 is a traveling body, 2 is a pre-processing section, 3 is a traveling wheel, 4 is a traveling section, 15 is an engine, 16 is a transmission case, 18 is a counter shaft, 24
is the transmission shaft.

Claims (1)

[Scope of utility model registration request] It is composed of a running section equipped with a single running wheel and a pre-processing section that performs the reaping operation. In a reaping machine equipped with a transmission case having an axle at the front end for transmitting power to the running wheels, there is a countershaft on the inner surface of the transmission case on the running wheel side. A transmission shaft having a protruding end and a rear end interlockingly connected to the protruding inner end of the counter shaft for transmitting power to the pre-processing section is attached to a running wheel so as to wrap with the transmission case and the running wheel when viewed from the side. A reaping machine characterized in that the reaping machine is disposed so as to pass between the housing and the transmission case so as to face in the front-back direction.