JP2000201523A - Wheel adjustment mechanism of mowing tying machine - Google Patents

Abstract

(57) [Summary] [Problem] To provide a wheel adjusting mechanism of a cutting and binding machine in which cutting and binding work is prevented by preventing the planted grain culm from being caught on the wheel adjusting mechanism 8 during the cutting and binding operation. SOLUTION: A wheel 3a driven through a transmission 6 is adjusted up and down by a wheel adjusting mechanism 8 for a body 3 that drives a cutting and binding device 5 through a transmission 6 transmitted from an engine 6a. In the configured mowing tying machine, the mowing tying device 5
The mounting bracket 80 on the side and the mounting bracket 82 on the side of the wheel 3a are provided so as to be position-adjustable by a mounting shaft 84 that enables vertical positioning, and an operating lever 83 is mounted on the mounting shaft 84 in a positioning operation position and a non-operation position. And a wheel adjusting mechanism of the cutting and binding machine provided so as to be switchable.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wheel adjusting mechanism of a tying and binding machine.

[0002]

2. Description of the Related Art Conventionally, a mowing and tying device comprising a mowing portion and a tying portion is fixed to an airframe, and the mowing and tying device and wheels are driven via a transmission transmitted from an engine. In addition, the mowing and binding device is fixed to the transmission, and a device in which it is difficult to adjust the height of the wheels with respect to the body has to be used as it is.

[0003]

However, when the mowing and bundling operation is performed in the field using the conventional mowing and bundling apparatus as described above, the height of the wheel adapted to the condition of the dry or wet field is required. Even if an attempt is made to adjust, since the height of the cutting and binding device with respect to the transmission is fixed as described above, the height cannot be set to an appropriate height according to the state of the field, and the cutting position of the planted grain culm and the cutting position There is a problem that the binding position changes in a field condition, and it is difficult to perform good cutting and binding.

[0004]

According to the present invention, there is provided a wheel adjusting mechanism for a mowing and binding machine according to the present invention, which drives a mowing and binding device 5 via a transmission 6 which is input from an engine 6a. On the other hand, in a mowing tying machine configured so that the wheels 3a driven via the transmission 6 are adjusted up and down by the wheel adjusting mechanism 8, the mounting bracket 80 on the body 3 side and the mounting bracket 82 on the wheel 3a side. Are provided so as to be position-adjustable by a mounting shaft 84 that enables vertical positioning, and an operation lever 83 is provided on the mounting shaft 84 so as to be switchable between a positioning operation position and a non-operation position. The operation lever 83 is configured to automatically move from the operation position to the non-operation position.

Therefore, since the height of the wheels 3a can be adjusted with respect to the machine body 3 by adjusting the wheel adjusting mechanism 8, the mowing and tying device 5 can be adjusted to an appropriate position so that the mowing and tying work can be performed satisfactorily. Can be. Further, since the operation lever 83 can automatically change between the operation position and the non-operation position, the operation lever 83 can be operated very favorably.

[0006]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a cutting and binding machine according to the present invention. As shown in FIG. 1, reference numeral 1 denotes a cutting section 5a for single-row cutting on a front portion of a body 3 having a U-shaped loop-shaped handle 2 and a wheel 3a for running one wheel (FIG. 2) in plan view. And a binding unit 5b.

The body 3 of the mowing and binding machine 1 has an engine 6a provided at the rear of the body at the center of a conventional steering wheel.
And a transmission (transmission case) 6 for transmitting the power of the engine 6a to the uncut side of the planted grain culm to transmit the speed of the wheels 3a and the cutting and binding machine 1 to the uncut side. The structure is such that it is provided adjacent to the engine 6a on the left and right sides so as to fit within the width of the handlebar 2. A transmission case 60 that connects the axle of the wheel 3a and the transmission 6 is provided rotatably on the uncut side of the transmission 6 via an output shaft portion 60a.
These are configured to support the handle 2 also as a connection reinforcing member via a frame structure 7 described later.

As shown in FIGS. 3 and 4, the cutting and tying device 5 integrally includes a cutting portion 5a and a tying portion 5b, and is attached to the machine body 3 via the frame structure 7. This achieves strong frame rigidity, lightweight aircraft, and good aircraft balance.

That is, the cutting section 5a is provided with a raising case 61 for receiving a single set of planted grain culms and performing a cutting operation, a raising guide 61a, and a lower rear cutting blade 62 on a cutting frame 6f. A binding unit 5b including a packer 63, a needle 63a, a knot portion, and the like is disposed on one right side of the cutting frame 6f. The knotter case 6n is formed on a sled frame 65 formed on both sides of the cutting frame 6f so as to also serve as a support frame. It is fixed. A transmission cylinder 70 and a vertical transmission case 71 extending from the transmission case 6 toward the front side.
Are connected in a T-shape to transmit the raising device built in the raising case 61, the cutting blade 62 and the binding portion 5b.

At the lower end of the vertical transmission case 71,
The binding portion 5b, the cutting blade 62, and the counter case 66 for driving the cutting blade 62 are fixed to the notter case 6n and the cutting frame 6f, and the upper portion of the vertical transmission case 71 has the lower front end fixed to the sled frame 65. It is fixed to the top of

In the illustrated handle 2, the grip 20 is formed in a loop shape, and both front ends of the handle bars 21 and 21 are detachably attached to the sled frame 65 of the cutting and binding device 5 via an attachment portion 65a. Attach and fix, and handle rod 2
The middle part of the first and second parts 21 is connected by a connecting rod 22 (FIG. 4), and a mounting bracket 80 provided on the left handle rod 21 (FIG. 3).
Is connected to a transmission case 60 via a wheel adjusting mechanism 8 described later to form a rigid frame. In addition, various operating tools such as operation levers and engine throttle levers are attached to the gripper 20.

The frame structure 7 comprises a transmission cylinder 70, a vertical transmission case 71 connected to the transmission cylinder 70 in a T-shape, and a handlebar 21 of the handlebar 2 having a substantially triangular shape in a side view as shown in FIG. By connecting the frames to form a rigid frame that does not cause frame collapse or the like, the frame structure can be formed without increasing the strength and weight of each mounting portion.

That is, the transmission cylinder 70 of the frame structure 7 connects the transmission 6 stably supported by the transmission case 60 to the vertical transmission case 71 firmly supported by the reaper 5a in a substantially horizontal posture in the vertical direction. The transmission shaft 70a is internally provided to form a downwardly L-shaped frame member having a long side and a short side.

The handle 2 is composed of left and right handle bars 2.
1 is bent downward, the lower end thereof is fixed to a mounting portion 65a formed at the rear of the sled frame 65 near the lower portion of the vertical transmission case 71, and the mounting piece 21a provided above the mounting portion 65a is fixed to the cutting frame 6f and the counter case. 66 and fastened together.

Also, as shown in FIG.
By connecting to the mounting piece 70b provided on the transmission cylinder 70 with the mounting piece 22a provided on the connecting rod 22 in the middle part of the first, the vertical transmission case 71 and the transmission cylinder 70 integrally formed in a downward L-shape are formed. On the other hand, the handle rod 21 is connected in a staggered manner so that the vertical transmission case 71, the transmission cylinder 70, and the handle rod 21 can form a rigid frame structure having substantially triangular rigidity in a side view. I have to. The attachment piece 21a of the right handlebar 21 is also connected to the notter case 6n as shown in FIG. 4 to improve the strength.

Further, the handle 2 supports the middle part of the handle rod 21 via the transmission case 60 and the wheel adjusting mechanism 8 so that the distance between the handle 2 and the wheel 3a can be changed to adjust the wheel 3a up and down. Supported, tying and binding machine 1
Can be appropriately adapted to the cutting and binding work in both dry and wet fields.

The wheel adjusting mechanism 8 includes a mounting bracket 80 provided on the handlebar 21 downward as shown in FIG.
And a mounting bracket 82 having an elongated hole 81 provided upward from the transmission case 60 with a mounting shaft 84 having an operation lever 83 as shown in FIG. Output shaft section 60a
Is supported so as to be rotatable within the range of the elongated hole 81.

As shown in FIGS. 5 and 6, a mounting bracket 80 on the body 3 and a mounting bracket 82 on the wheel 3a are provided so as to be moved up and down via a mounting shaft 84 so as to be positioned. Further, the operation lever 83 can be switched to the "positioning operation position" (solid line in FIG. 6A) and the "non-operation position" (chain line in FIG. 6A) by swinging the mounting shaft 84 as shown by arrows U and D. Even if the planted grain culm on the uncut side comes into contact with the operation lever 83 during the cutting and bundling operation, the operation lever 83 hangs in a free state with respect to the mounting shaft 84 as shown by a chain line. Since the operating lever 83 is freely rotated and retracted in the posture,
It is possible to prevent defects such as catching and shedding of the planted grain stem.

That is, the wheel adjusting mechanism 8 includes a mounting shaft 84.
A hexagonal head into which a spring washer and washer 8a, a screw portion 8c to be screwed into a nut 8b fixed to the mounting bracket 80, and a retaining ring (c pin) 8d and an operation lever 83 are slidably inserted into the other end. A non-engaging portion 8f of the operating lever 83, which is formed in a small-diameter cylindrical cross section, is formed between the operating lever engaging portion 8e and the receiving portion for receiving the spring washer.

The operating lever 83 has an operating state in which a hexagonal hole formed in the base thereof is fitted to the operating lever engaging portion 8e as shown by a solid line in FIG. It is configured such that it is detached from the joining portion 8e and moved to the non-engaging portion 8f to be in a non-operating state in which the screw can be freely rotated without being screwed.

Accordingly, in this configuration, in the solid line state shown in the figure, the operating lever 83 can be rotated to tighten the mounting shaft 84, so that the mounting bracket 82 is fixed between the stop washer 8a and the mounting bracket 80. As a result, the wheel 3a can be positioned and fixed at a predetermined height. Further, by operating the operation lever 83 to the loosening side, the distance between the handlebar 21 and the transmission case 60 is moved and fixed within the range of the long hole 81 (FIG. 5) to freely change the height of the wheel 3a. Is what you can do.

9 and FIG.
The guide plate 9a is provided so as to be able to guide and guide the harvested grain culm from above the cutting blade 62 toward the binding portion 5b, and 9a is provided behind the guide plate 9 and above the transmission cylinder 70. It is the cradle of the tying strap.

When the cutting and binding machine 1 configured as described above is run by adjusting the wheel adjusting mechanism 8 and positioning the height of the wheels 3a in accordance with the condition of the dry or wet field in the field, the cutting unit 5
While cutting the planted grain stalk at a, a series of cutting and tying work of tying to a predetermined weight at the tying portion 5b and discharging it outside the machine can be performed smoothly.

When performing such a cutting and binding work, for example, when the wheel 3a falls into a groove, sinks in a wetland, or crosses a ridge, the operator applies strong force to the handle 2.
It is common to raise or lower the hand.

On the other hand, the mowing tying machine 1 of the present invention connects the vertical transmission case 71, which transmits the mowing portion 5a and the tying portion 5b of the mowing tying device 5 by connecting them, and the transmission cylinder 70 in a T-shape. Further, by connecting the lower part of the vertical transmission case 71 and the rear part of the transmission cylinder 70 with the handle 2, the vertical transmission case 71 and the transmission cylinder 70 are further formed into a substantially triangular frame structure in a side view from the handle 2. I have.

Therefore, the mowing and binding device 5, the engine 6a and the transmission 6 can be supported in a well-balanced manner around the wheel 3a by the frame structure 7, and the handle 2 can be provided near the handle 2. The force can be dispersed to the triangular frame structure 7 without significantly bending the handle 2, and the traveling body 3 can easily escape from the above-mentioned situation while preventing deformation of the frame structure 7. be able to.

Further, by forming the handle 2 in a loop shape and connecting and fixing the intermediate portion of the handle rod 21 of the handle 2 to the transmission cylinder 70, the force is not concentrated on a specific local portion of the mounting portion. Since the frame structure can be simplified by simple means such as simple connection using the respective structural members of the body, there is an advantage that the lightweight and inexpensive mowing and binding machine 1 can be provided. .

At the time of the cutting and binding work, the uncultivated planted culm is guided sideways by a narrow guide (not shown) or the handle rod 21 of the handle 2 which gradually expands to the outside of the body toward the rear. Thus, the cutting and binding work is performed favorably.

At this time, since the operation lever 83 has been switched from the operation position shown by the solid line in FIG. 6 to the non-operation position shown by the dotted line, a part of the planted grain culm of the uncut area is moved by the wheel adjusting mechanism 8. When the operating lever 83 is in contact with the operating lever 83, the operating lever 83 is in a releasing position in which the operating lever 83 rotates from the hanging free position indicated by the solid line in FIG. The culm to be contacted can be released without being hooked on the operation lever 83, and the cutting and bundling work can be performed favorably while preventing the culm of the planted cereal culm from breaking or falling off.

As shown in FIG. 7, the wheel adjusting mechanism 8 has a long non-engaging portion 8f and a large gap between the operating lever 83 and the engaging portion 8e of the mounting shaft 84. If the operation lever 83 is released from the state in the operation position, the body vibration or the operation lever 83
Due to its own weight, the operating lever 83 changes its attitude greatly as shown by oblique lines toward the side opposite to the mounting shaft 84 and automatically moves to the non-operating position.

With this configuration, there is no need to move the operation lever 83 from the operation position to the non-operation position, and the wheel adjustment mechanism 8 can be provided with a simple structure and a reduced size.

[0032]

As described above, in the wheel adjusting mechanism of the cutting and binding machine according to the present invention, the mounting bracket 80 on the cutting and binding device 5 and the mounting bracket 82 on the wheel 3a can be positioned vertically. The wheel adjusting mechanism 8 is provided so as to be capable of adjusting the position with a mounting shaft 84, and the operating lever 83 is provided on the mounting shaft 84 so as to be switchable between a positioning operation position and a non-operation position.
Can be easily switched between the operating position and the non-operating position. Further, since the operation lever 83 is disposed near the upper portion of the wheel 3a, which is the joint between the transmission case 60 and the handle 2, the operability of the operation lever 83 is good and the hand is more handy than the transmission case 60. Easy to operate away.

Further, even if the planted grain culm comes in contact with the operating lever 83 in the non-operating position during the cutting and binding work, it is possible to satisfactorily prevent catching and shedding of the planted grain culm. Further, at this time, by providing the operation lever 83 so that the posture can be largely changed also on the inside, it is possible to more effectively prevent the contacted grain culm from being caught.

[Brief description of the drawings]

FIG. 1 is a plan view of a cutting and binding machine.

FIG. 2 is a side view of FIG.

FIG. 3 is a side view showing a configuration of a main part of the mowing and binding machine.

FIG. 4 is a plan view showing a configuration of a main part of the mowing and binding machine.

FIG. 5 is a side view showing the operation of the wheel adjustment mechanism.

6A is a rear view showing the configuration of the wheel adjusting mechanism in FIG. 5, and FIG. 6B is a front view of an operation lever.

FIG. 7 is a rear view showing another embodiment of the wheel adjusting mechanism.

[Explanation of symbols]

DESCRIPTION OF REFERENCE NUMERALS 1 cutting and binding machine 2 handle 3 traveling body 3a wheels 5 cutting and binding device 5a cutting portion 5b binding portion 6 transmission 6a engine 7 frame structure 8 wheel adjusting mechanism 8e operating lever engaging portion 8f non-engaging portion 20 gripping portion 21 handle rod 60 Transmission case 60a Output shaft part 61 Raised case 70 Transmission cylinder 71 Vertical transmission case 80, 82 Mounting bracket 81 Long hole 83 Operating lever 84 Mounting shaft

Claims (2)

[Claims] A vehicle body 3 for driving a cutting and binding device 5 via a transmission 6 transmitted from an engine 6a is vertically adjusted by a wheel adjusting mechanism 8 on a wheel 3a driven via the transmission 6. In the mowing tying machine constructed as described above, the mounting bracket 80 on the body 3 side and the mounting bracket 82 on the wheel 3a side are provided so as to be adjustable in position by a mounting shaft 84 that enables vertical positioning. And a wheel adjusting mechanism of the cutting and binding machine, wherein the operating lever 83 is switchably provided between a positioning operation position and a non-operation position. 2. The wheel adjusting mechanism of a mowing and binding machine according to claim 1, wherein the operation lever 83 is automatically moved from an operation position to a non-operation position.