JPH0748034Y2 - binder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a binder having a binding device.

[Conventional technology]

Conventionally, the binder is configured so that the traveling speed of the machine can be selected by a multi-speed shift system by gear transmission, and mowing, transporting,
The mowing unit for bundling was configured to be driven at a constant speed suitable for their operation.

[Problems to be solved by the device]

Since the binder is a walking type, the speed change for running is set within the limit of the walking speed of a person,
The minimum speed is set in consideration of the operation of the reaper. That is, if the traveling speed is set to be too slow, the cutting work will be delayed with respect to the conveyance speed in the cutting unit, and the cutting stems will be bound in a state in which the tips precede, and the binding posture is disturbed. In addition, since it causes inconvenience such as inducing a bad binding, it was set to a low speed in a range where it would not occur.

On the other hand, you can select a slower running speed to make it easier for beginners to work at extremely slow speeds or when it is difficult to walk in deep mud until they get used to it. Although it is desired to do so, it was difficult to realize it for the above-mentioned reason.

Therefore, it has been considered to apply a means adopted in the combine, that is, a so-called harmonic means for increasing or decreasing the driving speed of the mowing unit in synchronization with the traveling speed.

However, due to the mechanism of forming a knot in the binding string when the shoot arm releases the stem culm, if the drive speed of the binding device is unnecessarily slowed down, the knot will not be made well and a binding failure will occur. There was also a problem in adopting harmonic means because the speed had to be set higher (specifically 150 to 200 rpm).

It is an object of the present invention to provide a binder that enables a work traveling at a lower speed than before without the above inconvenience.

[Means for Solving the Problems]

For the above-mentioned purpose, the present invention constitutes a binder by allowing a cutting unit having a bundling device to shift gears through a transmission mechanism, and also having a continuously variable transmission mechanism for traveling capable of displaying a fine speed shift state. Further, it is characterized in that a linking means for forcibly moving the speed change mechanism to the low speed side is provided in association with the clutch disengaging operation of the reaping clutch.

[Action]

According to the above construction, the traveling speed can be continuously changed by the continuously variable transmission mechanism, so that it is possible to arbitrarily realize a slower speed state than the conventional one, and the drive speed of the cutting unit is also intervened by the transmission mechanism. Because you can change gears,
The speed can be set from low speed to high speed within the range where the operation of the binding device is not affected.

Therefore, if you operate the continuously variable transmission mechanism to select a slow low-speed running state that was not possible in the past, if you operate the transmission mechanism and drive the cutting unit at a low speed, the selected travel speed will be a low speed just before stopping. Although it cannot be completely eliminated depending on the speed, it is possible to prevent the stem culm from being conveyed to the bundling device with the tip of the tip as in the past, and the bundling is set by the setting of the speed change mechanism described above. It also eliminates defects.

If the mowing unit is driven at a high speed when traveling at a high speed, the mowing and harvesting work can be performed more smoothly and at high speed without the mowing stems being stagnant in the mowing unit.

In addition, since the transmission mechanism is operated to the low speed side in conjunction with the disengagement operation of the mowing clutch, that is, the drive speed of the mowing section is operated to the low speed side, the mowing clutch is then turned on to start traveling. At times, the drive speed of the mowing unit is always in a low speed state, and a state suitable for the starting speed when the continuously variable transmission is set to the low speed side can always be displayed without performing a dedicated operation of the transmission. It will be possible.

[Effect of device]

Therefore, while adopting a continuously variable transmission mechanism that allows the traveling speed to be arbitrarily selected within the setting range by the action of b, the operability of speed setting is improved, and the mowing traveling at a lower speed can be performed in the state where the binding failure does not occur as much as possible. In addition to the above, it was possible to provide a binder having a high practical value that is easy to operate because the traveling operation in actual work is further simplified by the action of (b).

To do.

As shown in FIG. 5, a rear part is provided with a driving part (G) composed of an engine (E) and a transmission device (1) directly connected to the engine and a handle (2), and travels to a side part of the driving part (G). As soon as the transmission case (4) for supporting the wheels (3) is attached, a cutting section (6) driven by a PTO shaft (5) extending forward from the transmission (1) is provided at the front. Make up the inder.

The mowing part (6) has been used to raise the planting stems (7), the raising device (8) for cutting the stems, the transport device (9) for transporting the cutting stems, and the transporter (9). It is composed of a binding device (10) which bundles the stems and ties them and then releases them.

The transmission is an internal friction type continuously variable transmission (hereinafter referred to as CVT).
(A) and a forward / reverse rotation switching mechanism (B) are configured to selectively select forward rotation, which is continuously variable, and reverse rotation, which is reverse at a constant gear ratio. At the same time, the drive speed of the reaper (6) can be changed by the speed change mechanism (C) provided on the PTO shaft (5).

As shown in FIG. 2, the CVT (A) has three taper cones (13) which are revolved around the main shaft (12) around the main shaft (12) axis (Y), and A transmission member (14) capable of shifting in the axial direction is circumscribed over these tapered cones (13), and the transmission member (1)
4) is a shift shaft (15) that is operated by a shift lever (11)
The shift operation is performed by rotating the.

This CVT (A) is set to zero speed at which output rotation stops when the gear is operated to the lowest speed side.

The speed change mechanism (C) is composed of a two-stage gear transmission that can be switched between high and low, and has a structure capable of changing gears by selection of meshing by a shift rotator (17) by a swing shifter (16).

As shown in FIG. 1, the speed change lever (11) of the CVT (A) is configured to be shiftable along the bent operation path (W), and the traveling speed is 0 m / m in the first operation path (18). from s
Up to 1.0 m / s, in the second operation route (19), a speed of 1.0 m / s or more for traveling can be continuously selected.

And it is attached to the handle (2) and the operation path (W)
An operation lever (25) that is interlocked by a swing shifter (16) of a speed change mechanism (C) and a wire (21) is provided in an operation frame (20) that forms the operation lever (25). The speed change mechanism (C) is switched between high and low by rocking. By the way, the gear ratio of the speed change mechanism (C) is determined so that the drive speed of the raising device (7) is 0.75 m / s on the low speed side (L) and 1.15 m / s on the high speed side (H). There is.

In the speed change mechanism (C), the operation lever (25) for manually switching the height is provided in the operation frame (20) as described above.

A clutch lever (24) for the harvesting clutch (F) is also provided on the operation frame (20), and then these operation levers (25).
The structure of the clutch lever (24) will be described.

As shown in FIG. 1, the clutch lever (24) of the reaping clutch (F) and the operation lever (25) of the speed change mechanism (C) are arranged in parallel with the operation frame (20), and the clutch lever The cutting position of (24) and the low speed (L) position of the operating lever (25) are arranged on the same side in the front-rear direction. An interlocking bar (26) formed by laterally fixing a round bar to the clutch lever (24) is provided. The operating lever (25) is interlocked with the clutch disengagement operation of the clutch lever (24).
The linking means (D) for forcibly moving to the low speed (L) side is configured.

As shown in FIGS. 3 and 4, the raising device (7) is attached to the upper sprocket (27) from the drive shaft (28) to the chain mechanism (29).
Is configured to input power by a chain mechanism (29) centered on the shaft center (P) of the drive shaft (28).
It is configured to be movable on the radius locus (30) of.

In other words, when the planting width of the crop is wide and the culm is long, the raising device (7) is located on the upper side (the phantom line in Fig. 3), and the planting width is wide, and the length of the short culm or lodging culm is large. When the lower side (3rd
They are located at the one-dot broken line in the figure), and when they have the standard width, they are moved to the intermediate positions (solid lines in FIG. 3) on the radial locus (30) and kept locked.

It should be noted that reference numerals are added to the claims of the utility model for convenience of comparison with the drawings, but the present invention is not limited to the configurations of the accompanying drawings by the entry.

[Brief description of drawings]

FIG. 1 shows an embodiment of a binder according to the present invention, FIG. 1 is a mechanism diagram of an operating system showing a linking means, FIG. 2 is a sectional view showing a structure of a continuously variable transmission mechanism, FIG. 3 and FIG. FIG. 5 is a front view showing a structure of the raising device, a sectional side view, and FIG. 5 is an overall side view. (6) ... Mowing section, (10) ... Bundling device, (A) ... Continuously variable transmission mechanism, (C) ... Transmission mechanism, (D) ... Coupling means, (F) ... Mowing clutch.

Claims (1)

[Scope of utility model registration request] 1. A continuously variable transmission mechanism (A) for traveling in which a fine speed shift state can be revealed, and a transmission mechanism (C) capable of changing the drive speed of a reaper (6) having a binding device (10). And a linkage means (D) for forcibly moving the speed change mechanism (C) to the low speed side in association with the clutch disengaging operation of the reaping clutch (F).