JPH0655057B2 - Combine - Google Patents

Description

TECHNICAL FIELD The present invention relates to a combine, and more particularly to a technique for improving work efficiency at harvest.

[Conventional technology]

Taking harvesting work with combine harvester as an example, when harvesting work with conventional combine harvester, as shown in Fig. 8, it is necessary to mow the grain culms of the headland (Pm), (Pm) in the field in advance. so,
Carriage routes (Rm) and (Rm) are formed on these headland parts (Pm) and (Pm), and the harvesting work is carried out by running the car body in the direction indicated by the arrow in the figure. ), (Pm) between the fields (P
Carry out a) the grain culm of a).

[Problems to be Solved by the Invention]

However, when carrying out harvesting work by traveling the vehicle body as described above, the vehicle body travels many times along the traveling routes (Rm), (Rm), so the headland parts (Pm), (Pm) are damaged. Not only is it lost, but the time required to travel along these travel routes (Rm), (Rm) is wasted, which causes a reduction in work efficiency.

Therefore, it is possible to perform so-called mowing, in which the vehicle body is run in a spiral shape from the edge of the field toward the center of the field. Since it appears, it is difficult to run following the stock row, and a combine that can work efficiently is desired.

An object of the present invention is to construct a combine that performs a harvesting operation while maintaining a high efficiency while allowing the vehicle to travel along the stock row by rational modification of the vehicle.

[Means for Solving the Problems]

A feature of the present invention is that a work frame provided with a pre-mowing processing section and a threshing device, left and right traveling devices, and a traveling frame provided with a hydraulic motor that independently drives these traveling devices are provided by a rotary connection mechanism. , A pair of hydraulic pumps for each of the hydraulic motors are provided on the work frame while being connected so as to make a turn of at least 180 degrees about the longitudinal axis, and the work frame is set in a predetermined turning posture with respect to the traveling frame. In this case, and in each of the cases where the turning posture is set by turning 180 degrees from the turning posture, a hydraulic joint for switching the left and right flow passages of the hydraulic oil from the pair of hydraulic pumps to the left and right hydraulic motors is the rotary coupling mechanism. It is provided on the same axis as the shaft core of the above, and its action and effect are as follows.

[Action]

If the above features are configured as shown in FIGS. 1, 2, and 6, for example, when performing harvesting work, the headland parts (Pm), (Pm) of the field are preliminarily set as shown in FIG. When mowing and mowing the grain culm in the field part (Pa) sandwiched between these headland parts (Pm) and (Pm), first the car body is made to travel straight along the route (Ra) and the car body part When (Pm), (Pm) is reached, the work frame (6) can be rotated 180 degrees, and the travel frame (12) can be moved backwards, and the travel route (Rb) can be laterally shifted by the cutting width. It is possible to restart the harvesting work without repeatedly moving the car body on the headland (Pm) as in the past.

Further, since the hydraulic joint (23) is provided coaxially with the axis (Y) of the rotary coupling mechanism (D), when the work frame (6) is turned, the relative attitude with respect to the traveling frame (12) should be maintained. First, the hydraulic oil from the pair of hydraulic pumps (25), (25) is transferred to the hydraulic motors (7), (7).
Can be supplied to the running frame (12) during this turning.
With respect to the work frame (6), by simply turning the work frame (180) by 180 degrees, the hydraulic oil flow paths (27), (27), supplied from the pair of hydraulic pumps (25), (25) to the hydraulic motors (7), (7), Hydraulic joints on both sides of (28)
Since (23) automatically switches, the hydraulic motor (7) on the fixed side is driven by the hydraulic pump (25) on the fixed side based on the work frame (6) regardless of the turning posture. This means that the right side traveling device (C) is based on the work frame (6).
Control the work frame regardless of the turning posture.
Since it suffices to control the hydraulic pump (25) on the fixed side of (6), for example, by arranging an operation lever or the like for controlling this hydraulic pump (25) on the right side of the work frame (6), work can be performed. Regardless of the turning posture of the frame (6), when the right traveling device (C) is controlled, it suffices to operate the right operating lever (when controlling the left traveling device (C). As well).

That is, according to the present invention, by connecting the work frame (6) to the traveling frame (12) so that the work frame (6) can freely rotate, only the work frame (6) can be rotated, and work can be performed in a form in which the vehicle body reciprocates. Moreover, since the oil passages are switched by the hydraulic joint (23), even if the work frame (6) is rotated during work, left and right traveling based on the work frame (6) without using a complicated configuration. The left and right traveling devices (C), (C) can be controlled by a fixed operation from the side of the work frame (6) without changing the control relationship of the devices (C), (C).

〔The invention's effect〕

Therefore, the vehicle body is allowed to follow the stock row to enable highly efficient harvesting work, and a simple oil passage switching structure is provided to perform a special switching operation when the work frame is turned. Even if it does not exist, the combine is configured to perform the steering operation with a fixed operation feeling without changing the feeling of the left and right steering operations.

〔Example〕

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

As shown in FIGS. 2 to 5, a plurality of raising devices (1)
.., Hair clipper type mowing device (2), transport device for sending mowing grain culms
(3) Pre-cutting section (A) consisting of etc. and feed chain (4) to which the cut culms from the transfer device (3) are handed, threshing device (B) consisting of handling barrel (5), etc. Prepare for the frame (6), hydraulic motor (7), deceleration case (8), drive sprocket
(9), a large number of idle wheels (10) ,, a traveling device (C) including a crawler belt (11), etc. is provided on both left and right sides of the traveling frame (12),
Rotational connection mechanism between work frame (6) and traveling frame (12)
By (D), a combine is constructed by connecting so as to be able to turn 180 degrees or more around the longitudinal axis (Y).

As shown in FIG. 5, the working frame (6) is configured by connecting a number of front-rear facing frames (6a) and left-right facing frames (6b), and this working frame (6) is shown in FIG. As described above, the engine (13), the triple pump (P) driven by the power from the engine (13), the driver's seat (14) arranged above the engine (13), and the rear of the driver's seat (14) Each of the Glen tanks (15) is provided, and the traveling frame (12) includes a support frame (12a) formed in a rectangular shape so as to surround the rotation coupling mechanism (D), a drive sprocket (9), and an idle wheel ( 10) .Consists of a track frame (12b) that supports each of them, and a leg-shaped connection frame (12c) that connects them, and the rotary connection mechanism (D) is attached to the work frame (6) side. Plate (1
6), a ring-shaped member (17), a support member (18) attached to the traveling frame (12) side, and a ring gear (19), and a ring gear (19) for rotating the work frame (6). A swivel drive mechanism including a pinion gear (20) meshing with, a reduction case (21) and a hydraulic motor (22) is provided on the side of the work frame (6).

A hydraulic joint (23) is arranged coaxially with the longitudinal axis (Y) of the rotary coupling mechanism (D), and the pressure oil on the side of the work frame (6) passes through this hydraulic joint (23). It is adapted to be supplied to the traveling hydraulic motors (7), (7).

That is, the hydraulic circuit provided in this combine is shown in FIG. 1, and the triple pump (P) is arranged in front of the driver's seat (14) as shown in FIG. ), And two variable displacement hydraulic pumps (25), (25) and one constant displacement pump (26) that change the discharge amount thereof, and each hydraulic pump (25), (25) The hydraulic oil from 25) is sent to the hydraulic joint (23) via the pair of first flow paths (27), (27), respectively, and the hydraulic joint (23) and the traveling hydraulic motor (7) ), (7) are also formed with a pair of second flow paths (28), (28), respectively.

Further, the hydraulic joint (23) is a hydraulic pressure to which hydraulic oil is supplied from the hydraulic pump (25) on a predetermined side every time the work frame (6) rotates 180 degrees with respect to the traveling frame (12). The motor (7) has a function of a switching valve so that it can be switched to the left and right, and the operating direction of the steering lever (24) and the steering direction match even if the work frame (6) is set in any direction. Is configured.

Further, the hydraulic oil from the constant capacity pump (26) is passed through the first switching valve (29) and the pair of oil passages (30) to the hydraulic motor (2) for turning.
2) and a hydraulic motor (33) (not shown only in the hydraulic circuit diagram) for driving the mowing pretreatment section (A) via the second switching valve (31) and the pair of oil passages (32). To be supplied to.

The outline of the structure of the hydraulic joint (23) is shown in FIG. 6, and the hydraulic joint (23) is a work frame.
The first member (23a) fixed to the (6) side and the traveling frame (1
A second member (23b) fixed to the side (2) and fitted in the member (23a).
And the first member (23a) extends between the space in which the second member (23b) is fitted and the outer wall of the first member (23a), and the vertical axis (Y) is sandwiched between the first member (23a) and the outer wall of the first member (23a). A pair of guideways up and down to face each other
(34), (34) are formed, and the second member (23b) and the guide paths (34), (34) and the second path are displaced only at a predetermined rotational phase and a rotational phase displaced by 180 degrees from this rotational phase. A pair of connecting paths (36), so as to communicate with the lower ports (35) of the member (23b),
By forming (36), the guideway (36),
First channel (27), (27) communicating with (36) and port (35)
・ The second flow paths (28) and (28) connected to the first and second members, respectively.
The (23a) and (23b) are communicated with each other at a predetermined rotation phase, and are switched and communicated with each other at a phase displaced from this rotation phase by 180 degrees.

[Another embodiment]

In addition to the above-described embodiment, the present invention is configured such that, for example, the traveling device is a multi-wheel type, and a spool type valve element is provided inside the hydraulic joint as a structure for switching the flow path in the hydraulic joint, and the swing operation is performed. Can be implemented in various ways, for example, by using an electric motor.

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

[Brief description of drawings]

The drawings show an embodiment of the combine according to the present invention. FIG. 1 is a hydraulic circuit diagram showing a traveling hydraulic system of the combine, FIG. 2 is an overall side view of the combine, and FIG. 3 is a lower part of the combine. FIG. 4 is a vertical sectional front view, FIG. 4 is a sectional view of a turning drive system, and FIG. 5 is a plan view showing a traveling system, a turning system, etc. of the combine,
FIG. 6 is a schematic perspective view of a hydraulic joint, FIG. 7 is a plan view showing a working form of the combine, and FIG. 8 is a plan view showing a working form of the conventional combine. (6) …… Work frame, (7) …… Hydraulic motor, (12) …… Traveling frame, (23) …… Hydraulic joint, (25) …… Hydraulic pump, (28) …… Flow path, (A ) …… Mowing pretreatment section, (B) …… Thrushing device, (C) …… Traveling device, (D) …… Rotary coupling mechanism, (Y)
…… Vertical axis.

Claims (1)

[Claims] 1. A work frame (6) equipped with a pre-mowing treatment section (A) and a threshing device (B), left and right traveling devices (C), (C), and
Hydraulic motors that drive these traveling devices (C) and (C) independently
The traveling frame (12) provided with (7) and (7) is a rotary coupling mechanism.
(D) is connected so that it can rotate at least 180 degrees around the longitudinal axis (Y), and the hydraulic motor
A pair of hydraulic pumps (25) and (25) for (7) and (7) respectively are provided on the work frame (6), and the work frame (6) is set to a predetermined turning posture with respect to the traveling frame (12). In this case, and in each of the cases where the turning posture is set by turning 180 degrees from this turning posture, the hydraulic oil from the pair of hydraulic pumps (25), (25) to the left and right hydraulic motors (7), (7) Channel (27),
A combine comprising a hydraulic joint (23) for replacing the right and left of (28) on the same axis as the axis (Y) of the rotary coupling mechanism (D).