JP3260132B2 - Combine harvester - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combine harvester in which a pre-processing device at the front of a harvester moves left and right.

[0002]

2. Description of the Related Art Heretofore, there has been known a combine in which a pretreatment unit having a cutting blade for cutting grain culm is configured to be manually movable left and right. For example, there is a technique disclosed in Japanese Utility Model Laid-Open No. 2-142123.

[0003]

However, in the above prior art, the lever for adjusting the left and right positions of the reaper is located on the side of the fuselage, and the driver leaves the driver's seat for alignment. It had to be adjusted and there was a problem with operability.

[0004]

To solve the above object, according to an aspect of, the processing apparatus is manually operated before the reaper front in combine cutting apparatus movable in the right and left, pretreatment
Left and right while expanding and contracting in conjunction with the
Transmission case that transmits power from the rear of the mowing section to the pretreatment device
And restrict the expansion and contraction of the transmission case and move the pre-processing device
Provide a position fixing device to fix in the moving position,
A lock lever for fixing the position of the pretreatment device to be provided;
The handle for the left and right movement operation that is fixed to the control device is attached to the reaper so that the handle of the end of the lock lever together with the handle of the handle can be gripped by the hand of the operator on the cab. It was arranged at the upper right side.

[0005]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a right side view showing an embodiment of a position fixing device of a pretreatment device, FIG. 2 is an overall side view of a combine,
3 is a plan view of the track frame, and FIG. 4 is a front view of the track frame, wherein (1) is a track frame on which a traveling crawler (2) is mounted;
(3) a machine fixed to the track frame (1);
(4) a threshing unit in which a feed chain (5) is stretched to the left and a handling cylinder (6) and a processing cylinder (7) are built in;
(9) is a straw processing unit that faces the end of the straw chain (10), (11) is an engine unit that drives each unit of the combine, (12) is grain extracted from the threshing unit (4). A paddy tank for storing grains, (13) is a driver's cab provided with a driver's seat (14) and a driving operation unit (15), and a mowing unit (8)
The husks harvested in the above are subjected to threshing in the threshing unit (4).

As shown in FIGS. 4 to 6, the cutting unit (8) is raised by a left and right raising device (17) for raising uncut kernels taken in through a weeding plate (16). A left and right scraping device (18) for scraping the culm side of the grain stalk and transporting it to the rear, and a cutting blade (1) for cutting the culm of the grain stalk during scraping.
A pre-processing device constituted by 9) or the like is provided at the front of the reaping unit (8). The pre-processing device is supported by a horizontal transmission shaft case (20) disposed horizontally and horizontally below the mowing part (8). The horizontal transmission shaft case (20) is connected to the horizontal support rod (21) by a parallel link (22), and the pretreatment device can move left and right by the rotation of the parallel link (22). Lateral support rod (21)
Is integrally connected to a lower end of a vertical support rod (24) which is fixed forwardly and downwardly from a cutting input shaft case (23) provided horizontally and horizontally at a rearmost portion of the cutting unit (8). The reaping input shaft case (23) is supported on the machine base (3) by left and right bearing stands (25), and the vertical support rod (24) is provided.
By the expansion and contraction of the hydraulic cylinder (26) stretched between the machine and the machine (3), the pretreatment device can be moved up and down around the horizontal axis with the reaping input shaft case (23) as a fulcrum.

As shown in FIGS. 7 to 10, transmission to the pre-processing device is performed by a cutting input shaft (28) provided with a cutting input pulley (27) at the right end in a cutting input shaft case (23). The swing input shaft case (23) is pivotally supported by a middle portion thereof so as to be rotatable left and right, and is pivotally supported by a swing transmission shaft case (29) extending forward and contractible. The rear end of the transmission shaft (30) is positioned on the vertical axis (3
1) and two sets of bevel gears are interlocked and connected to each other, and power is transmitted to a pre-processing device in front of the reaping unit (8).

[0008] In the pre-processing device, the lateral transmission shaft case (2
From the right end of (0), a right-raising transmission shaft case (32) in which a gear case (32a) is incorporated in an intermediate portion is started up,
A transmission shaft case (33) is raised from the left end of the horizontal transmission shaft case (20), and the front end of the oscillating transmission shaft case (29) is raised to the upper part of the transmission shaft case (32). The front end of the swing transmission shaft (30) is linked to the upper right extension transmission shaft (34), which is pivotally supported in the upper portion of the right extension transmission shaft case (32), by a bevel gear. At the upper end of the upper right transmission shaft (34), a right raising drive shaft (35), which is provided with a drive sprocket of a tine chain of the right raising device (17), is interlocked with a bevel gear.

On the other hand, the lower end of the upper right raising transmission shaft (34) is raised right through the spur gear group of the gear case (32a), and the lower right raising transmission is supported in the lower portion of the transmission shaft case (32). The transmission shaft (36) is connected to the upper end of the shaft (36), and the lower part of the transmission shaft (36) is raised to the left and the lower end is raised to the left.
The lower left transmission shaft (37), which is supported inside, is interlocked to the lower end via a horizontal transmission shaft (38), which is supported in a horizontal transmission shaft case (20), and two sets of bevel gears. The upper end of the raising transmission shaft (37) is provided with the driving sprocket of the tine chain of the left raising device (17).
9) is interlockingly connected by a bevel gear. In addition, the transmission shaft (4) to the right raking device (18) and the cutting blade (19)
0) is branched from the horizontal transmission shaft (38), and the left scraping device (18) is driven by the drive of the right scraping device (18).

Then, as shown in FIG. 7, the swing transmission shaft case (29) pivots left and right about the vertical axis (31) in conjunction with the left and right movement of the pre-processing device. In this case, the power can be transmitted to the pretreatment device, and the components can be driven.

As shown in FIGS. 4 to 8, the reaping section (8) is provided with two grain culms that join the scraping side of the scraping device (18) of the pretreatment device. A vertical transport device (42) for transporting to the grain culm supply port (41) and an ear tip transport device (43). The vertical transport device (42) and the spike transport device (43) are supported via a drive case (44) at the left end of the cutting input shaft case (23), and can be lifted and lowered, that is, harvested, integrally with the pretreatment device. The entire part (8) can be moved up and down. The drive case (44) is provided with a mowing mechanism so that the vertical conveying device (42) and the spike conveying device (43) can rotate up and down integrally with the pretreatment device in order to adjust the handling depth. The input shaft case (23) is vertically rotatable about a horizontal axis coaxial with the rotation center. Further, a drive shaft (45) is supported by the drive case (44) in a substantially vertical direction, which is interlockingly connected to the mowing input shaft (28) by a bevel gear, and a lower end of the drive shaft (45) has a vertical transport device (42). ) Is provided with a drive sprocket for the vertical transfer chain, and a drive sprocket for the tip transfer tine chain of the tip transfer device (43) is provided at the upper end.
The vertical transport device (42) and the spike transport device (43) can rotate left and right about a drive shaft (45) in conjunction with the left and right movement of the pretreatment device.

As shown in FIGS. 9 and 10, the swing transmission case (29) is connected to a pre-processing device in which one end of the swing transmission case (28) is rotatably fitted around a vertical axis (31). A rear transmission case (29a) having a rear end integrally connected to the other end of a gear case (46) having an L-shaped cross section, which is a power output portion; A front transmission case (29b) having a front end integrally connected to a gear case (47) serving as an input portion, and a front transmission case (29) is provided inside the front end of the rear transmission case (29a).
b) The rear end is slidably fitted, and is capable of turning left and right and expanding and contracting. The swing transmission shaft (30) has a bevel gear (49) that extends rightward at the front end and meshes with a bevel gear (48) on the transmission shaft (34), and has a polygonal shaft portion (30a) at the rear end. A bevel gear (51) that is allowed to rotate only in the gear case (46) and is fitted into the bevel gear (51) that meshes with the bevel gear (50) attached to the upper end of the longitudinal axis (31) while allowing only axial sliding. This bevel gear (5
By sliding the swing transmission shaft (30) with respect to 1), it is possible to absorb a change in the inter-axis distance between the parallel vertical axis (31) and the right-hand transmission shaft (34) due to the left-right movement of the pretreatment device. .

As shown in FIG. 1, a position fixing device (52) of a pretreatment device is disposed on a rear upper portion on a right side of a reaping portion (8) which can be reached by an operator on a cab (13). . The position fixing device (52) includes a swing transmission shaft case (29).
The first part fixed by welding to the front end of the rear transmission case (29a)
Lock plate (53) and right-raised transmission case (3
2) A second lock plate (54) fixed to the upper gear case (47) by bolts, and a lock lever (55) for connecting each lock plate (53) (54) by engagement of a shaft and a hole. And right and left lock holes (56) and (57). On the upper right side of the gear case (47), the first lock plate (53) is on the upper side and the second lock plate (54) is on the lower side. The lock plates (53) and (54) are slidably overlapped with each other, and the lock lever (5) is vertically movable via a lever receiver (58) on the upper surface of the first lock plate (54) in the overlapping portion.
5) and a return spring provided between the split pin (59) inserted into the lower portion of the lock lever (55) and engaged with the upper surface of the first lock plate (54) and the upper surface of the lever receiver (58). By (60), the lower end of the lock lever (55) is penetrated and held on the lower surface of the first lock plate (53) through the positioning hole, and the position corresponding to the lower end of the lock lever (55) at the horizontal movement position of the pretreatment device. The left and right lock holes (56) and (57) are opened in the second lock plate (55). Further, a substantially L-shaped handle (61) for a left-right movement operation of the pretreatment device is provided, and the handle (61) is provided.
The mounting bracket (62) fixed to one end of the transmission case (32) is fixed to the upper right side of the transmission case (32) by bolts, and the grip (61a) at the end of the handle (61) is raised to the right to raise the transmission case ( The handle (61) is extended rearward from the right side of the upper end of the lock lever (32) so that the grip (55a) at the end of the lock lever (55) can be gripped together with the grip (61a) of the handle (61). The lock lever (55) is also formed in a substantially L-shape, and its grip portion (55a) extends rearward from the lower right side of the grip portion (61a) of the hand (61) so as to be substantially parallel to the grip portion (61a). ing.

When moving the pretreatment device,
Holding the grip (61a) of the handle (61) and the grip (55a) of the lock lever (55) with one hand from the cab (13), pull up the lock lever (55), and lower the lower end of the lock lever (55). From the left or right lock hole (56) (57) of the second lock plate (54), and the first lock plate (53) and the second lock plate (54).
Is released by making the swing transmission shaft case (29) extendable and contractable.
This is because the length of the swing transmission shaft case (29) during movement is longer than the length at the left and right movement position. In consideration of this, in the left or right moving position, the pretreatment device releases the lock lever (55), and the lock lever (55) is pulled down by the spring (60), and the lock lever (55) is pulled down. ) Is fitted in the left or right lock hole (56) (57) of the second lock plate (53) with the lower end of the first lock plate (53) penetrating the first lock plate (53). By engaging and connecting with the second lock plate (54) and restricting expansion and contraction of the swing transmission shaft case (29), the swing transmission shaft case (29) has a length corresponding to the length of the pre-processing device in the left-right movement position. Since the length is fixed and cannot be extended any more, the preprocessing device is fixed at the left and right movement positions.

[0015] Further, at the left and right movement position of the preprocessing device, the rear transmission case (29) of the swing transmission shaft case (29).
a) and the transmission shaft case (32) which is raised to the right is connected by the position fixing device (52), so that the rigidity of the entire mowing part (8) is increased, and the dripping of the pretreatment device is prevented. The posture can be stabilized, and the bevel gears (48) and (49) that interlock and connect the swing transmission shaft (30) and the transmission shaft (34) to the right to reduce the power loss. Can be done.

FIG. 11 shows another embodiment of the position fixing device. This position fixing device (52a) is also the same as the position fixing device (52), and the rear transmission case of the swing transmission shaft case (29). (29a) Raise the front end to the right and set the transmission shaft case (3
2) It is connected to the upper gear case (47), restricts the extension of the swing transmission shaft case (29) in the left-right movement position of the pre-processing device, and fixes the position of the pre-processing device in the left-right movement position so as to be able to move left-right. The connection between the rear transmission case (29a) and the gear case (47) includes the rear transmission case (29).
a) A swing operation lever (64) having a latch ring (63) attached to the side, and a hook body (65) attached to the gear case (47) and hooking the latch ring (63).
And a function similar to that of the position fixing device (52) is obtained.

A transmission case (29) in which the pre-processing device at the front of the reaping unit (8) moves right and left, and is transmitted from the reaping input shaft case (23) at the rear of the reaping unit (8) to the pre-processing device.
The transmission case (29) can be rotated left and right in conjunction with the left and right movement of the pre-processing device, and the transmission case (29)
Since the position fixing devices (52) and (52a) of the pretreatment device are provided between the front end and the pretreatment device, the position fixing devices (52) and (52a) do not function without soil or the like adhering thereto. The pretreatment device can be properly moved to the right and left and its position can be fixed at the right and left movement position.
, And cost reduction.

Further, since the position fixing devices (52) and (52a) have a structure for restricting the extension (extension and contraction) of the transmission shaft case (29), it is possible to prevent the pretreatment device from sagging due to insufficient support rigidity at the left and right movement positions. And stabilize the posture, prevent contact damage with the ground, etc.
9) The internal transmission shaft (30) and the transmission shaft (3
Gears (48) and (49) for interlocking and coupling 4) can be properly meshed to improve transmission efficiency.

[0019]

As is apparent from the above embodiments, the present invention provides that the pre-processing device at the front of the reaping section (8) is operated by manual operation.
In a combine harvester that is configured to be movable to the left and right, the left
Rotate to the right to transmit the mowing part (8) from the rear to the pre-processing device
Transmission case (29) and expansion and contraction of the transmission case (29)
Position to fix the pretreatment device at the left and right
A fixing device (52) is provided, and a position fixing device (52) is provided.
A lock lever (55) for fixing the position of the pretreatment device;
The handle (61) for the left and right movement operation, which is fixed to the processing device, and the handle (61a) of the handle (61) and the handle (55a) at the end of the lock lever (55) are connected to the cab (13). It is arranged at the upper right side of the reaper (8) so that it can be gripped by the hands of the operator who boarded
Without leaving the driver's cab (13), while holding at the driver's cab (13), with one hand, releasing operation of the lock for position fixing,
The right and left movement operation of the pretreatment device can be performed at once, and the operability has been greatly improved. Also, soil or the like adheres to the position fixing device (52).
To prevent malfunction and prevent pretreatment
The position can be fixed properly at the right and left movement and its left and right movement position.
You. Further, the position fixing device (52) is provided with the transmission shaft case (2).
9) The structure that regulates the elongation (expansion and contraction)
Hanging due to insufficient support stiffness at the lateral movement position of the device
Prevents galling, stabilizes posture, prevents damage to contact with the ground, etc.
Transmission shaft inside the transmission shaft case (29)
(30) and the transmission shaft (34) of the pretreatment device are linked and connected.
Gears (48) and (49) are properly engaged to improve transmission efficiency.
Can be improved.

[Brief description of the drawings]

FIG. 1 is a right side view showing an embodiment of a position fixing device of a pretreatment device.

FIG. 2 is an overall side view of the combine.

FIG. 3 is an overall plan view of the combine.

FIG. 4 is an overall front view of the combine.

FIG. 5 is a left side view of the reaper.

FIG. 6 is a plan view of a reaper.

FIG. 7 is a plan view showing a left-right rotation operation of the swing transmission shaft case.

FIG. 8 is a plan view showing the power transmission structure of the reaper.

FIG. 9 is a side sectional view of the swing transmission shaft case.

FIG. 10 is a right side view of a main part of the reaper.

FIG. 11 is a plan view showing another embodiment of the position fixing device of the pretreatment device.

[Explanation of symbols]

 (8) Mowing part (13) Driver's cab (55) Lock lever (61) Handle

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int. Cl. ⁷ , DB name) A01D 67/00 A01D 34/28-34/28 101

Claims (1)

(57) [Claims] 1. A combine harvester in which a pre-processing device at the front of a reaping unit is configured to be movable left and right by manual operation, while expanding and contracting in conjunction with left-right movement of the pre-processing device.
The power transmitted from the rear part of the reaper to the pre-processing device
A moving case, and a pre-processing device that regulates expansion and contraction of the transmission case.
A position fixing device is provided to fix the
Lock lever for fixing the position of the pretreatment device provided in the pre-processing device
And a handle for left and right movement operation fixed to the pretreatment device ,
The grip portion at the end of the lock lever together with the grip portion of the handle is arranged at the upper right side of the reaping portion so that the operator on the driver's cab can grip the grip portion. Combine harvester.