JPS6230919Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention is a reaper in which a reaping section is configured to be driven and oscillated up and down around a first horizontal axis via a fluid pressure cylinder. The structure is configured to be able to swing freely toward the front of the machine about a second horizontal axis located lower than the first horizontal axis, and between the reaping section and the fluid pressure cylinder, the first horizontal axis of the reaping section is arranged in a state in which the cylinder is extended. A bending link mechanism is installed to allow the aircraft to swing forward about the horizontal axis.
The present invention relates to a device in which the reaping section is configured to be able to be moved forward and away from the machine by swinging forward about the first and second horizontal axes.

In such a reaping machine, the reaping part can be moved forward by swinging around the first and second horizontal axes, while being able to perform reaping work, traveling on the road, storing, etc. with a short front-to-back length of the machine. By positioning
The advantage is that while the reaping section remains connected to the machine, a space with a sufficient width in the front and rear direction is created between the reaping section and the machine, making maintenance of the reaping section and the machine extremely advantageous. has. However, with conventional systems, the position and posture of the reaping section relative to the machine when the reaping section is moved forward is regulated by the grounding action of the reaping section, and the distance forward is left to the judgment of the operator. As a result, the position and attitude of the front-separated reaping section relative to the machine is uncertain, and especially when performing maintenance on sloped or uneven ground, the reaping section may move unexpectedly due to contact with the worker, creating a dangerous situation. There was a strong possibility that such a situation would arise. Moreover, when the reaping section is lifted and moved rearward, the first horizontal axis is located in front of the second horizontal axis, so when the reaping section is lifted, the reaping section is moved backwards due to its weight. Therefore, when the above-mentioned hip bending link mechanism is fully extended to a straight line state and the reaping section is swung rearward around the first horizontal axis, the Due to the tension of the extension and bending link mechanism, it was impossible or extremely difficult for one person to move the reaping section toward the machine.

An object of the present invention is to eliminate such inconveniences.

The reaper according to the present invention is as follows:
A first regulating mechanism is provided for regulating the swinging of the reaping section toward the front of the machine about the second horizontal axis, and
The present invention is characterized in that a second regulating mechanism is provided for regulating the waist bending link mechanism from reaching a fully extended state in a state of maximum forward swing of the reaping section around the first horizontal axis.

In other words, the presence of the regulating mechanism makes it possible to determine the position and attitude of the reaping section that has moved forward, with respect to the machine, so that by moving the reaping section forward to the full limit, the reaping section can always be This makes it possible to safely perform maintenance on the reaping section and the machine by moving the reaping section away from the front in a stable position and posture. Moreover, when lifting the cutting part that has been separated from the front and moving it backward,
Even if the reaping section swings forward around the first horizontal axis due to lifting of the reaping section, the regulating mechanism prevents the reaping section from swinging until the hip bending link mechanism reaches its fully extended state. The link mechanism is naturally bent by swinging around the first horizontal axis of the reaping section, and can be maintained in a state that allows the reaping section to swing around the first horizontal axis. It has become possible to move easily by one person.

Hereinafter, an embodiment of the present invention will be described based on the drawings. The front part of the machine is equipped with a crawler traveling device 1, a threshing device 2, a weeding tool 3, a pulling device 4, a reaping device 5, and a reaped grain culm. A device 6 for conveying and supplying the threshing device 2 to the threshing device 2 is connected to a reaping section 8 which is assembled to a frame 7, and this reaping section 8 is configured to be able to swing up and down around the first horizontal axis _a1 of the machine. A combine harvester (an example of a reaper) is also provided with a hydraulic cylinder 9 that drives and oscillates the reaping section 8 up and down by expansion and contraction.
In this case, the reaping section 8 is configured as follows.
In other words, the member 10 that swingably supports the reaping part 8 around the first horizontal axis _a1 is moved to the second horizontal axis a, which is lower than the first horizontal axis _a1 and located forward. _{The second} horizontal axis is pivoted to the frame 11 of the machine so as to be able to swing forward about the second horizontal axis _A2 , and the first horizontal axis _A1 is displaced from the rear to the front with respect to the second horizontal axis A2. The first transverse axis _a1 of the reaping section 8 is arranged between the frame 7 and the cylinder 9 of the reaping section 8 in a state where the cylinder 9 is extended _. A bending link mechanism 12 that allows the aircraft to swing toward the front side around
By swinging forward about A ₁ and the second horizontal axis A ₂ , it is configured to be able to move forward and away from the machine while maintaining a substantially constant posture.

The bending link mechanism 12 is configured by pivotally connecting the free ends of a first link R1 that is pivotally connected to the reaping section frame ₇ and a second link _R2 that is pivotally connected to the cylinder 9 side. The first link _R1 is fixed in a position overlapping the reaping part frame 7 in a state where the reaping part 8 is swung rearward around the second horizontal axis _a2 , and the second link R ₂ is a bending part for vertically swinging the reaping section from the link R3 which is driven and oscillated up and down by the cylinder ₉ when the reaping section ₈ is in a rearward swinging position around the second horizontal axis a2. This constitutes the link mechanism 13.

Thus, the support member 10 and the machine frame 11
The second part of the reaping part 8 in the extended state
_The front swing of the supporting member 10 at a certain angle θ ₁ or more with respect to the machine frame 11 is restricted, and the second A first regulating mechanism using a bending link mechanism that allows this backward swing by bending as it swings backward around the horizontal axis _a2 .
A ₁ is provided, and the waist bending link mechanism 1
2, in the maximum forward swing state of the reaping section 8 around the first horizontal axis _a2 , the contact between the stopper _S1 on the first link _R1 side and the stopper _S2 on the second link _R2 side. A second restriction mechanism _A2 is provided which restricts the bending link mechanism 12 from being extended to a fully extended state in a straight line due to this engagement.

In the figure, 14 indicates how the support member 10 is centered on the first horizontal axis.
This is a metal fitting for fixing the a ₁ in a posture in which the a 1 is located behind the second horizontal axis a ₂ .

According to the above configuration, when the reaping section 8 is moved forwardly apart, forward rocking of the reaping section 8 beyond a certain level around the second horizontal axis _a2 is regulated by the first regulating mechanism _A1 , and , the forward rocking of the reaping section ₈ around the first horizontal axis a1 is regulated by the second regulating mechanism _A2 , and as a result, the reaping section 8 is kept at a fixed position with respect to the machine. Move forward in a fixed position.

When the front separated reaping section 8 is lifted and returned to the rear position, the forward swinging force about the first horizontal axis _a1 due to the lifting is applied to the reaping section 8, but the swinging force is Since it is regulated by the regulating mechanism _A2 , the bending link mechanism 12 is not fully extended, and the first part of the reaping section 8 is
Smooth backward swinging around the horizontal axis _a1 is possible.

In addition, the first regulating mechanism using the above-mentioned bending link mechanism
A ₁ is formed with a long hole b for flexibility that automatically releases the tension in the extended state as the reaping part 8 swings around the second horizontal axis a ₂ . , this first
The regulating mechanism A ₁ includes a wire or chain that becomes fully extended when the forward swing angle of the support member 10 with respect to the machine reaches a certain angle θ ₁ between the support member 10 and the machine frame 11. It may be made by being stretched.

The second regulating mechanism _A2 may be a wire (or chain) or a bent link (not shown) suspended between the reaping section frame 7 and the support member 11, as shown by the imaginary line in the figure. It's okay if it's hot.

[Brief explanation of the drawing]

The drawings illustrate an embodiment of the reaper according to the present invention, and FIG. 1 is a side view, and FIGS. 2A and 2B are enlarged side views of main parts showing the operation. 8...Reaping section, 9...Fluid pressure cylinder, _A1 ...
...first regulation mechanism, 12...hip bending link mechanism,
A ₂ ...Second regulatory mechanism.

Claims (1)

[Scope of utility model registration request] In a reaper in which the reaping section 8 is configured to be movable up and down around the first horizontal axis _a1 via a fluid pressure cylinder 9, the reaping section 8 is moved around the first horizontal axis a1.
The reaping section 8 is configured to be able to swing freely toward the front of the machine around the second horizontal axis _A2 located at a lower position than _A1 , and the reaping section 8 is configured to swing freely toward the front of the machine around the second horizontal axis _A2 . A first regulating mechanism A ₁ for regulating rocking is provided between the reaping section 8 and the fluid pressure cylinder 9, and a first horizontal axis a 1 of the reaping section 8 is provided between the reaping section 8 and the fluid pressure cylinder 9 when the cylinder ₉ is in an extended state.
A bending link mechanism 12 that allows the body to swing toward the front side around the surroundings _is interposed, and the bending link mechanism A reaping machine characterized by being provided with a second regulating mechanism _A2 that regulates that the mechanism 12 is in a fully extended state.