JPH06907Y2 - All culm-type companion - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a front part of a traveling vehicle body equipped with a threshing device, a mowing device for cutting planted husks, and a slaughtered device for cutting husks. The present invention relates to an all-cule throw-in type combine in which a mowing section made up of a feeding device is vertically movable.

[Conventional technology]

Generally, in the combine harvester having the structure described at the beginning, because of the structure in which the cut culms are sent to the whole culm threshing device, for example, at the time of harvesting husks having a grained part only at the upper end of the culm such as rice and wheat, It is desirable to cut only the tips of the culms and send them to the threshing device in order to improve the processing capacity,
In the conventional combine harvester, as described above, a harvesting operation may be performed in which only the tips of the culms are cut.

[Problems to be solved by the device]

However, as mentioned above, in the work in which only the tip of the culm is cut, the uncut stock remains on the ground, which may hinder the next plowing work, and there is room for improvement.

Therefore, a cutting device provided in the cutting unit is provided at a lower position further rearward so that a means for cutting the uncut stock can be moved up and down.
It is conceivable to adjust the proper stock origin position by raising and lowering it (see, for example, Japanese Patent Laid-Open No. 60-244217).

However, it is not possible to deal with the case where the ground partly undulates only by providing the cutting means capable of moving up and down, and the cutting amount changes and the length of the stock after cutting increases or decreases. There is a concern that it may rush into the rising ground.

An object of the present invention is to realize a cutting means capable of cutting a leftover plant stock as close to the ground as possible, and to realize a structure in which the cutting means can move up and down by following a change in the ground level.

[Means for Solving the Problems]

In order to achieve the above-mentioned object, the present invention has a mowing unit comprising a cutting device for cutting planted husks, and a feeding device for feeding the cut husks to the threshing device, in the front part of a traveling vehicle equipped with the threshing device. In the all culm throw-in type combine that connects the
A cutting blade mechanism for cutting the stock left uncut by the reaping device is provided in a state in which it can be moved up and down by a double-acting hydraulic cylinder, and the cutting blade mechanism is in a floating control state in which it moves up and down in a ground following state. A hydraulic valve that controls the hydraulic cylinder, and a floating operation position that is connected to the drain oil passage in a state where a pair of supply and discharge oil passages for the hydraulic cylinder are connected to each other by a short-circuit oil passage, and
The throttle mechanism is provided in the drain oil passage on the lower side in the oil discharge direction than the short-circuit oil passage, and its action and effect are as follows.

[Action]

The operation will be described with reference to FIG. 1 and FIG. 2. During the harvesting work, as shown in FIG. 2, the hydraulic cylinder (11) is actuated to move up and down the entire mowing part (B) to move the shell. The height level of the mowing device (5) is set so that only the tips of the culms (K) are harvested, and the cutting blade mechanism (14) is provided separately from the height adjustment of the mowing part (B). Set the hydraulic valve (17) for the double-acting hydraulic cylinder (16) that operates only the lifting and lowering unit to the floating operation position (F).

At the floating operation position (F), the pair of oil supply / discharge passages (a), (b) of the hydraulic cylinder (16) are short-circuited in the hydraulic valve (17), and the throttle mechanism (18) is connected to the drain oil passage (18). 19) and the hydraulic cylinder (16) is connected to the throttle mechanism (19).
The back pressure generated by the cylinder allows the cylinder to freely expand and contract while being filled with pressure oil.

Therefore, in this floating operation position (F), for example, when the cutting blade mechanism (14) that follows the ground reaches a recess such as a hole in the ground, the cutting blade mechanism (14) is in a state of floating in the air. In this case, the hydraulic cylinder (16) is accompanied by oil discharge in the upper oil supply / discharge passage (a) and oil supply in the lower oil supply / discharge passage (b) in FIG.
Moves in the direction of shortening, and the cutting blade mechanism (14) moves downward by its own weight until it touches the ground.

In addition, the cutting blade mechanism (14) shows the raised part (G
When the pressure reaches (a), the hydraulic cylinder (16) moves in the extension direction along with the oil discharge in the lower oil supply / discharge passage (b) and the oil supply in the upper oil supply / discharge passage (a). The cutting blade mechanism (14) has its raised portion (Ga)
It will follow and rise.

As described above, in the floating operation position (F), the cutting blade mechanism follows the ground contact with the ground, so that the uncut cutting stock can be cut at a position near the ground regardless of the undulation of the ground.

[Effect of device]

As a result, it is possible to economically provide a structure that can satisfactorily cut uncut stock at a position near the ground even if there is undulation by a relatively simple modification that provides a floating operation position on the hydraulic valve of the lifting cylinder. It was

〔Example〕

 Embodiments of the present invention will be described below with reference to the drawings.

As shown in FIG. 2, the threshing device (1) and the Glen tank (2) are mounted, and the cutting unit (B) is provided at the front part of the vehicle body (A) which is driven by the pair of left and right crawler traveling devices (3). It is connected so that it can be moved up and down to form an all-cullet-type combine harvester.

As shown in FIG. 1 and FIG. 1, the mowing section (B) is a reel (4) for scraping the planting culm (K), and a clipper-type mowing device for cutting the planting culm (K) ( 5), Husks (K ₁ ) from the mowing device (5)
Conveyor (6) to send the rear, husks from the conveyor (6) the auger (7) that moves the culms from the cutting unit (B) to the substantially left-right center of the threshing device (1a) ) Feeding device (8).

The supply device (8) is composed of front and rear wheels (8a), (8b) and endless belts (8c) wound around the front and rear wheels (8a), (8b), and the traveling vehicle body (A) It is driven by transmitting power from the rear wheel body (8b), and this power is transmitted to the support shaft (9) of the wheel body (8a) via the front wheel body (8a). Furthermore, the reel (4), the conveyor (6), and the auger are driven by the power transmitted to the support shaft (9).
A drive system (not shown) is configured so that (7) is driven and the reaping device (5) is reciprocally driven.

Further, the support shaft (10) of the wheel body (8a) at the rear of the supply device (8) has its both ends idly supported by the traveling vehicle body (A), and the traveling vehicle body (A) and the mowing device (5). The reaper (B) is configured to swing up and down around the support shaft (10) by the operation of the hydraulic cylinder (11) arranged between.

In this combine harvester, the cutting capacity of the threshing device (1) was improved by cutting only the tips of the planting culms (K), and the uncut crop (K ₂ ) was cut at a level as close to the ground as possible. A cutting blade mechanism for cutting is provided in the cutting unit (B).

That is, with respect to the lower surface of the mowing part (B), the left and right pivots (1
A vertically swingable frame (13) is extended rearward via (2), and the clipper-type cutting blade mechanism (14) is attached to the swing end of the frame (13). In the cutting blade mechanism (14), the arm (15) attached to the end of the pivot shaft (12) has a hydraulic cylinder.
It is rocked and raised by being driven by (16).

Further, the hydraulic cylinder (16) is configured as a double-acting type, and is controlled by a hydraulic valve (17).
A floating operation position (F) for setting the cutting blade mechanism (14) in a floating state is formed in (17).

That is, the hydraulic valve (17) is in the floating operation position.
In addition to (F), operating position (UP) to raise the cutting blade mechanism (14),
A down position (DOWN) and a neutral position (N) are formed to form a 4-position operation type, and the floating operation position (F) is a pair of oil supply / discharge passages for the hydraulic cylinder (16).
(a), (b) are connected by the short-circuit oil passage (c), and the throttle mechanism (19)
A hydraulic system is formed so as to communicate with the drain oil passage (18) via the.

Then, in the floating operation position (F), the hydraulic valve (17)
When is set, a floating control state that can be raised and lowered in a floating state without being disturbed by the hydraulic system that drives and raises the cutting blade mechanism (14) is slowly and smoothly revealed by the throttle mechanism (19). Is configured.

Then, during the harvesting work, the cutting unit (B) is set to a level at which only the tip portion (K ₁ ) of the culm (K) is harvested, and then the hydraulic valve (17) is set to the floating operation position (F). The cutting blade mechanism (14) moves up and down by following the undulations of the ground (G) by the sled body (14a) provided on the lower surface of the cutting blade mechanism (14).
(K ₂ ) is cut at a level close to the ground (G).

In the figure, (20) is a hydraulic pump that supplies pressure oil to the hydraulic system of the cutting blade mechanism (14), and (21) is a relief valve.

[Another embodiment]

The present invention may be configured such that the cutting blade mechanism is connected to the traveling vehicle body so as to be able to move up and down.

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]

The drawings show an embodiment of the all-cullet throw-in type combine according to the present invention, and FIG. 1 is a view showing a hydraulic system for controlling elevation of a cutting blade mechanism,
FIG. 2 is a side view showing a front portion of the all culm throw-in type combine. (1) …… Thrushing device, (5) …… Mowing device, (8) …… Supply device, (14) …… Mowing blade mechanism, (16) …… Hydraulic cylinder, (17)…
… Hydraulic valve, (18)… Drain oil passage, (19)… Throttle mechanism,
(a), (b) ... oil supply and discharge passage, (c) ... short-circuit oil passage, (A) ... traveling vehicle, (B) ... mowing section.

Claims (1)

[Scope of utility model registration request] 1. A mowing device (5) for cutting planted husks on the front part of a vehicle body (A) equipped with a husk removing device (1), and a cut husk to the threshing device (1). Mowing part consisting of feeding device (8)
(B) is an all-cullet throw-in type combine that can be moved up and down, and a cutting blade mechanism (14) for cutting the stock left uncut by the cutting device (5) is a double-acting hydraulic cylinder (16). A hydraulic valve (17) for controlling the hydraulic cylinder (16) so that the cutting blade mechanism (14) is in a floating control state in which the cutting blade mechanism (14) moves up and down while following the ground.
A pair of oil supply and discharge passages (a) to the hydraulic cylinder (16),
Drain oil passage with (b) communicating with each other through the short-circuit oil passage (c)
A floating operation position (F) connected to (18) is formed, and a throttle mechanism (19) is provided in the drain oil passage (18) on the lower side in the oil discharge direction than the short-circuit oil passage (c). All culm type combine.