JP2821868B2 - 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 pre-processing device which can be slid left and right disposed at the front of a reaping unit. The present invention relates to a configuration for properly transmitting power so that power is not transmitted.

[0002]

2. Description of the Related Art Conventionally, a rear end is rotatably connected to a reaping input shaft case at a rear portion of a reaping portion, and a transmission shaft case extending forward and backward is provided so as to extend and contract. There was a technology to transmit to the pretreatment device to slide.

[0003]

It is already known that the reaping unit moves up and down about the reaping input shaft case as a fulcrum. When the reaping unit moves up and down, the transmission shaft case and the internal power transmission are controlled by the pre-processing device. There is a problem in that an external force acting on the shaft to cause abnormal extension thereof acts to damage the transmission shaft case, the transmission shaft, other driving connection members, the rotation connection portion of the transmission shaft case, and the like.

[0004]

SUMMARY OF THE INVENTION Accordingly, the present invention provides a transmission shaft case for transmitting a pre-processing device at the front of a reaping unit to the pre-processing device from a reaping input shaft case at the rear of the reaping unit. The transmission shaft case is rotatable left and right in conjunction with the left and right slide of the pre-processing device, and the rear transmission is connected to the cutting input shaft case so that the rear end can be rotated left and right in a retractable combine harvester. Between the shaft case and the connecting portion on the preprocessing device side connecting the front end of the front transmission shaft case in which the rear portion slidably fits into the front portion of the rear transmission shaft case, there is an external force in the direction away from the preprocessing device. On the other hand, a buffer mechanism for buffering the force is provided.

[0005]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a right side view of a main part of the mowing unit, FIG. 2 is an overall side view of the combine, FIG. 3 is a plan view thereof, and FIG. 4 is a front view thereof, wherein (1) shows a traveling crawler (2). A track frame to be installed, (3) a machine fixed to the track frame (1), (4) a feed chain (5)
Threshing section with a handle cylinder (6) and a processing cylinder (7) built-in on the left side, (8) is a double-row cutting section, (9) is a straw processing step facing the end of a straw chain (10) Unit, (11) an engine unit for driving each unit of the combine, (12) a paddy tank for storing grains extracted from the threshing unit (4), (13) a driver's seat (14) and a driving operation unit (15) The cab is provided with a stalk, and is configured so that grain stalks cut by the cutting unit (8) are subjected to threshing by 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 be slid left and right by the rotation of the parallel link (22). Side support rod (2
1) is integrally connected to the lower end of a vertical support rod (24) that is fixed forwardly and downwardly from a cutting input shaft case (23) horizontally and horizontally provided at the rearmost part 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 (2) is provided.
The pretreatment device can be moved up and down around a horizontal axis with the reaping input shaft case (23) as a fulcrum by expansion and contraction of a hydraulic cylinder (26) stretched between 4) and the machine base (3).

As shown in FIGS. 1, 7 to 9, the 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).
Are pivotally supported at the intermediate portion of the cutting input shaft case (23) so as to be rotatable left and right, and are also pivotally supported within a swinging transmission shaft case (29) that extends to extend forward and backward. The rear end of the rocking transmission shaft (30) is interlocked to the cutting input shaft (28) by a longitudinal axis (31) and two sets of bevel gears,
Power is transmitted to a pretreatment device in the 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 set up on the rear side of the right-raising device (17), and the lateral transmission shaft case (2) is raised.
The transmission shaft case (33) rises leftward from the left end of the device (0) to the rear of the device (17), and the front end of the swing transmission shaft case (29) rises right to the transmission shaft case. (3
2), and the front end of the oscillating transmission shaft (30) is interlockingly connected by a bevel gear to the upper right-raising transmission shaft (34) which is pivotally supported in the upper portion of the transmission shaft case (32). . 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 supported by 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) rotates left and right about the vertical axis (31) in conjunction with the left and right slide of the pre-processing device. Also, power can be transmitted to the pretreatment device, and each part 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), which is interlockingly connected to the mowing input shaft (28) by a bevel gear, is supported on the drive case (44) in a substantially vertical direction, and this drive shaft (45) is supported.
A drive sprocket of the vertical transfer chain of the vertical transfer device (42) is provided at the lower end, and a spike transfer device (43) is provided at the upper end.
The drive sprocket of the tip transfer tine chain is provided, and the vertical transfer device (42) and the tip transfer device (43) can be rotated left and right about the drive shaft (45) in conjunction with the left and right slide of the preprocessing device. ing.

As shown in FIGS. 1, 9 and 10, the swing transmission case (29) has one end side thereof fitted to the cutting input shaft case (28) so as to be rotatable around the longitudinal axis (31). A rear transmission case (29a) having a rear end integrally connected to the other end of the gear case (46) having an L-shaped cross section, which is a power output portion to the processing device;
And a front transmission case (29b) having a front end integrally connected to a gear case (47), which is a power input unit on the pretreatment device side, on the upper part of the transmission shaft case (32) extending rightward. The rear end of the front transmission case (29b) is slidably fitted inside the front end of the case (29a), and is capable of turning left and right and expanding and contracting. The swing transmission shaft (30)
Bevel gear (48) on the transmission shaft (34) raised to the right at the front end
The bevel gear (49) meshing with the shaft is fixed, and the polygonal shaft portion (30a) at the rear end is supported by the gear case (46) while allowing only rotation, and the bevel gear (49) attached to the upper end of the longitudinal axis (31). The bevel gear (51) meshing with the bevel gear (51) is fitted so as to allow only sliding in the axial direction. The sliding of the swing transmission shaft (30) with respect to the bevel gear (51) causes the pretreatment device to slide left and right. It is possible to absorb a change in the distance between the parallel vertical axis (31) and the right-raising transmission shaft (34).

Further, as shown in FIGS. 1 and 10, between the rear transmission case (29a) and the right-raising transmission shaft case (32) of the swing transmission shaft case (29), the pretreatment device separation direction (A). Buffer mechanism (5) that buffers the external force
2), and the shock absorbing mechanism (52) is parallel to the front transmission case (29b) by a bracket (53) which is fixed to the gear case (47) of the transmission shaft case (32) by right-raising and bolted. The connecting rod (5
4) The front nut is loosely inserted into the spring seat (55) projecting and fixed from the outer surface of the rear transmission case (29a), and is screwed to the front end of the spring seat (55) and the connecting rod (54). (57)
The connecting rod (5) is provided by a compression spring (58) provided therebetween.
4) is elastically pulled rearward. When the cutting unit (8) is moved up and down by the buffer mechanism (52), the right raising device (17) of the pre-processing device moves the swing transmission shaft case (2).
9) and by absorbing the force of pulling the swing transmission shaft (30) forward, the abnormal extension operation of the swing transmission shaft case (29) and the swing transmission shaft (30) is prevented. Rear transmission case (2) necessary for extension of transmission shaft case (29)
9a) and the front transmission case (29b) can be reduced in wrapping amount, and the shaft projecting space (59) of the gear case (46) which needs to be provided at the rear end side of the swing transmission shaft (30) can be reduced. In comparison, the swing transmission case (29) can be made lighter and more compact, and furthermore, by simultaneously preventing the posture change of the right elevating device (17) tilting forward, the elevating device (17) can be raised to the left with respect to the longitudinal axis (31). The parallelism of the transmission shaft case (32) and the perpendicularity of the swing transmission shaft case to these are maintained, and the malfunction of the expansion and contraction operation due to the bending deformation at the joint of the swing transmission shaft case (29) is prevented. And a drive coupling member such as a bevel gear (48) (49) (50) (51) between the swing transmission shaft (30) and the longitudinal axis (31) and the right-raising transmission shaft (34), and a swing transmission. Shaft case (2 ) And the Reaper input shaft case (2
3) and to prevent the breakage of the connecting shaft with the power transmission shaft case (32) without generating any twisting or the like.

The left and right slides of the pretreatment device are located at the cab (1).
3) is manually pushed and pulled left and right by an operator who has boarded the transmission shaft case (3) as shown in FIG.
A handle (61) for pushing and pulling is fixed to the upper portion of 2) via a bracket (60), and the hand holding the handle (61) is pulled rightward and rearward to the right outside of the transmission shaft case (32). By pulling upward with the upper end of the lock lever (62) provided in the direction, a left or right lock hole (left and right lock holes) at a left and right slide position of a pretreatment device integrally formed on the front outer periphery of the right link (22). The lower end of the lock lever (62) is pulled out from the illustration (not shown), so that the pretreatment device can slide left and right. The pre-processing device locks the lock lever (6) in the left or right lock hole in the left and right slide position.
2) The lower end is fitted by the return spring (63) and fixed in position.

The cushioning mechanism (52) maintains a proper posture even when the pre-processing device is slid left and right, and also prevents the swinging transmission shaft case (29) from being stretched due to poor expansion / contraction operation, thereby providing a smooth operation. Left and right slide can be performed.

[0016]

As is apparent from the above embodiments, the present invention is directed to a case where the pre-processing device at the front of the reaping unit (8) slides right and left, and the reaping input shaft case (2) at the rear of the reaping unit (8).
3) A transmission shaft case (29) for transmitting power to the pre-processing device is further provided, and the transmission shaft case (29) is rotatable left and right in conjunction with the left-right slide of the pre-processing device, and is a retractable combine harvester. In the reaping input shaft case (23)
Transmission shaft case (29) that connects the rear end
a) and a connecting portion (47) on the pretreatment device side for connecting the front end of the front transmission shaft case (29b) whose rear portion is slidably fitted to the front portion of the rear transmission shaft case (29a). A buffer mechanism (52) for buffering an external force in a direction away from the pretreatment device is provided. When the reaping unit (8) moves up and down, the transmission shaft case (29) and An external force that abnormally extends the internal transmission shaft (30) can be prevented from acting on the internal transmission shaft (30), and the transmission shaft case (29) and the transmission shaft (3) can be prevented.
0), and other components such as the drive connecting member and the rotary connecting portion of the transmission shaft case (29) can be prevented from being damaged.

[Brief description of the drawings]

FIG. 1 is a right side view of a main part of a reaper.

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 mowing unit.

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

FIG. 8 is a plan view showing a transmission structure of the mowing unit.

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

FIG. 10 is a side view of a buffer mechanism.

[Explanation of symbols]

 (8) Cutting part (23) Cutting input shaft case (29) Swing transmission shaft case (29a) Rear transmission shaft case (29b) Front transmission shaft case (47) Gear case (connecting part) (52) Buffer mechanism

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) A01D 34/28-34/30 A01D 61/00-67/00

Claims (2)

(57) [Claims] 1. A pre-processing device at the front of a reaping unit slides left and right, and a transmission shaft case for transmitting power from a reaping input shaft case at a rear of the reaping unit to the pre-processing device is provided. In a combine harvester that can rotate left and right in conjunction with left and right slides and expands and contracts, a rear transmission shaft case that connects a rear end to the cutting input shaft case so as to be able to rotate left and right, and a front of the rear transmission shaft case. A buffer mechanism for buffering an external force in a direction away from the pre-processing device between the pre-processing device and a connecting portion on the pre-processing device side for connecting the front end of the front transmission shaft case in which the rear portion is slidably fitted to the portion. A combine harvester, comprising: 2. The buffer mechanism is connected from a connecting portion on the pretreatment device side.
Connecting rod extending rearward, connecting rod side and rear transmission shaft case
Side, and a connecting rod provided between spring seats
2. The combination according to claim 1, comprising a spring for urging the elastic force.
Reaper.