JPH0984440A - Reaping device for combine harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a reaping device for a combine harvester capable of maintaining the relative position between a pretreating device and a longitudinally transporting device approximately constant. SOLUTION: A longitudinally transporting device is connected through a treating depth adjusting mechanism to a transmission shaft case which is linked to the right and left sliding of a pretreating device, rotated right and left and transmits powder to the pretreating device not changed much in a height position even in the right and left rotation so that the longitudinally transporting device which is made to rise while being linked to the left sliding of the pretreating device and rotated left is turned downward around a rear horizontal shaft by the stretching action of an adjusting link of the treating depth adjusting mechanism moving left approximately horizontally to keep the pretreating device at a light sliding position and a longitudinally transporting device position based on the pretreating device at a lift sliding position approximately constant.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combine reaping device in which a pretreatment device is slidable from side to side and to a structure for keeping the relative positions of the pretreatment device and the vertical conveying device substantially constant. .

[0002]

2. Description of the Related Art Conventionally, by vertically rotating a vertical conveying device around a rear horizontal axis, a handling depth for changing a grain culm passing height at a leading end of the vertical conveying device with respect to an end of a grain culm conveying path of a pretreatment device. Making adjustments. Also, in the case where the pretreatment device slides to the left and right, the vertical transport device rotates left and right in conjunction with the left and right slide of the pretreatment device, and keeps the relative position of these left and right directions substantially constant. ing.

[0003]

The vertical movement of the vertical conveyance device is performed in a plane having an upper left tilt centering on a rear drive shaft provided coaxially with the drive sprockets of the vertical conveyance chain and the upper conveyance tine chain. Done. For this reason, there is a problem in that as the position of the vertical conveyance device is rotated to the left, the position becomes higher, and the relative position with respect to the pretreatment device changes significantly.

[0004]

SUMMARY OF THE INVENTION Therefore, the present invention is directed to a pretreatment device that rotates left and right in conjunction with left and right slides of the pretreatment device and whose height position does not change much even when the pretreatment device is rotated left and right. By connecting the vertical transfer device to the transmission shaft case via the handling depth adjustment mechanism, the vertical transfer device, which is going to rise while turning left in conjunction with the left slide of the pretreatment device, is moved substantially horizontally to the left. By the tensioning action of the adjusting link of the moving depth adjustment mechanism, the handle is rotated downward around the horizontal axis to make the position of the vertical transport device substantially constant relative to the pretreatment device in the right slide position and the pretreatment device in the left slide position. It is something to keep.

[0005]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a front view showing a horizontal rotation operation of a vertical conveyance device, FIG. 2 is an overall side view of the combine, FIG. 3 is a plan view of the combine, and FIG. 4 is a front view of the combine, in which (1) is a traveling crawler ( 2) a track frame, 3) a machine base fixed to the track frame 1, and 4) a feed chain 5 mounted on the left side, and a handling cylinder 6 and a processing cylinder 7) built-in threshing unit, (8) mowing unit for two-rows having grain culm vertical conveying device, (9) Straw processing unit (10) Straw processing unit facing the end, (11) combine (12) is a paddy tank that stores the grains extracted from the threshing unit (4), and (13) is a driver's seat (14)
A cab including a driving operation unit (15), and is configured such that the grain culms harvested by the harvesting unit (8) are shredded by the threshing unit (4).

As shown in FIGS. 4 to 6, the mowing section (8) is raised by the left and right raising devices (17) for raising uncut grain culms which are taken in through the sward plate (16). Left and right scraping device (18) that scrapes the culm root side of the grain stalk and conveys it backward, and a cutting blade (1) that cuts the stalk root of the grain stalk when scraping
A pretreatment device composed of 9) and the like is provided in the front part of the mowing section (8). This pretreatment device is supported by a horizontal transmission shaft case (20) horizontally arranged horizontally below the reaper (8). The lateral transmission shaft case (20) is connected to the lateral support rod (21) by a parallel link (22), and the pretreatment device can slide left and right by the rotation of the parallel link (22). Lateral support rod (2
1) is integrally connected to the lower end of a vertical support rod (24) projecting downward and fixed forward from a cutting input shaft case (23) horizontally installed horizontally at the rear end of the cutting unit (8).
The reaping input shaft case (23) is supported on the machine base (3) by the left and right bearing bases (25), and the vertical support rods (2).
The pretreatment device can be raised and lowered around the horizontal axis with the reaping input shaft case (23) as a fulcrum by the expansion and contraction of the hydraulic cylinder (26) that is stretched between the 4) and the machine base (3).

As shown in FIGS. 7 to 9, the transmission to the pretreatment device is carried out by the cutting input shaft (28) provided with the cutting input pulley (27) at the right end in the cutting input shaft case (23). The swing input shaft case (23) is rotatably pivoted in the middle part of the reaping input shaft case (23) and is pivotally supported in a swing transmission shaft case (29) that is extendably extended forward. The rear end of the transmission shaft (30) is connected to the cutting input shaft (28) by the vertical axis (3
1) and two sets of bevel gears are interlockingly connected, and power is transmitted to the pretreatment device at the front of the mowing section (8).

In the pretreatment device, the lateral transmission shaft case (2
From the right end of (0), the right raising transmission shaft case (32) in which the gear case (32a) is incorporated in the middle part is started up,
The transmission shaft case (33) is raised to the left from the left end of the lateral transmission shaft case (20), and the front end of the rocking transmission shaft case (29) is raised to the right and positioned above the transmission shaft case (32). The front end of the rocking transmission shaft (30) is connected to the upper right raising transmission shaft (34) pivotally supported in the upper portion of the right raising transmission shaft case (32) by a bevel gear. A right raising drive shaft (35) provided with a drive sprocket for the tine chain of the right raising device (17) is linked to the upper end of the upper right raising transmission shaft (34) by a bevel gear.

On the other hand, the lower end of the upper right raising transmission shaft (34) is raised rightward through the spur gear group of the gear case (32a), and the lower right raising transmission is pivotally supported in the lower portion of the transmission shaft case (32). The lower end of the shaft (36) is interlockingly connected to the upper end of the shaft (36), and the lower end of the shaft (36) is left up.
The left raising transmission shaft (37) pivotally supported in the lower end is connected to the lower end of the lateral transmission shaft case (20) through a lateral transmission shaft (38) pivotally supported in the lateral transmission shaft case (20) and two sets of bevel gears. The upper end of the lifting drive shaft (37) is provided with the driving sprocket of the tine chain of the left lifting device (17) and the left lifting drive shaft (3).
9) is interlocked with a bevel gear. In addition, the transmission shaft (4) to the right scraping device (18) and the cutting blade (19)
0) is branched from the lateral transmission shaft (38), and the left scraping device (18) is driven by the driving of the right scraping device (18).

As shown in FIG. 7, the swing transmission shaft case (29) rotates substantially horizontally (left and right) about the vertical axis (31) in conjunction with the left and right slide of the pretreatment device. Power can be transmitted to the pretreatment device at any of the left and right positions, and each part can be driven.

As shown in FIGS. 4 to 8, the mowing section (8) is provided on the front side of the threshing section (4) with two rows of grain culms which join the scraping side of the scraping apparatus (18) of the pretreatment apparatus. It is equipped with a vertical transport device (42) and a tip transport device (43) for transporting to the grain culm supply port (41). The vertical transfer device (42) and the tip transfer device (43) are supported at the left end of the reaping input shaft case (23) via a drive case (44), and can be moved up and down together with the pretreatment device. The whole part (8) can be raised and lowered. In addition, in order to adjust the handling depth of the vertical transfer device (42) and the tip transfer device (43), this drive case (44) is mowed so that each device can integrally rotate up and down separately from the pretreatment device. It is connected to the input shaft case (23) so as to be vertically rotatable about a horizontal axis coaxial with the center of rotation. Further, a drive shaft (45) is supported on the drive case (44) in a substantially vertical direction, and a drive sprocket of a vertical transfer chain (42a) of the vertical transfer device (42) is provided at a lower end of the drive shaft (45). And the tip transfer device (4
A drive sprocket for the tip transport tine chain (43a) of 3) is provided, and the vertical transport device (42) and the tip transport device (43) are interlocked with the left and right slides of the pretreatment device to move right and left around the drive shaft (45). It is rotatable.

As shown in FIGS. 8 and 9, the transmission to the vertical transfer device (42) is performed by driving the drive shaft (44) into the horizontal shaft portion of the drive case (44) fitted to the reaping input shaft case (23). Four
The horizontal shaft (46), which is interlockingly connected with 5) by a bevel gear, is axially supported. The horizontal shaft (46) is arranged on the same axis as the reaping input shaft (28) and is interlocked by a spline boss. The vertical transfer device (42) and the tip transfer device (4) are connected.
It is transmitted to 3).

Further, FIG. 1, FIG. 4, FIG. 5, FIG. 8 and FIG.
0, as shown in FIG. 11, the grain culm conveying side of the vertical conveying device (42) rises from the outside to the upper side, and is inverted downward above the tip transporting device (43) so as not to convey the grain culm of the vertical conveying device (42). It is provided with a substantially inverted U-shaped vertical conveyance frame (47) that hangs down on the side surface. This vertical transport frame (47) includes a vertical transport device (4
2) Chain guide rails and chain guide rollers for stretching the vertical transfer chain (42), and a cutting guide (48) for holding the grain culms on the vertical transfer chain (42) are attached, and the tip is transferred. A chain case, a chain guide rail, a chain guide roller, a tip guide plate and a tine guide (49) of the tip conveying tine chain (43a) of the device (43) are attached, and a pair of long and short sensor arms (50a) (for detecting culm length) ( 50b) etc. are attached, and one end of this vertical transport frame (47) is
The connecting pipe (5) is attached to the drive case cover (52) that holds the drive shaft (45) through the bearing (51).
3) and a guide rail (5) for vertical rotation of a vertical transfer device (42) provided integrally with the pretreatment device.
It is slidably connected to 4) by a connecting pipe (55). Further, the vertical conveyance frame (47) is connected to the rear part of the swing transmission shaft case (29) by a handling depth adjusting mechanism.

The handling depth adjusting mechanism is provided in the swing transmission shaft case (2
The nut body (5
A screw shaft (58) to which 7) is screwed is rotatably supported, and a forward / reverse rotation motor (59) for rotating the screw shaft (58) forward and backward.
The nut body (57) projects a pin (61) for slidably engaging the tip into an elongated hole (60) formed in the base stand (56) from the upper surface to prevent corotation. The screw shaft (58) is reciprocally moved in the front-rear direction on the shaft by the forward and reverse rotations of the screw shaft (58). Also this nut body (57)
Is a lower end of a vertical link (63) whose middle portion is rotatably supported by a fulcrum shaft (62) fixed laterally to the outer surface of the rocking rolling shaft case (29) and a nut body (57). The tip of the pin (64) protruding from the left side surface is slidably engaged with the long hole (65) formed at the lower end of the vertical link (63) to interlock and connect the vertical link (63). The nut body (57) is swung around the fulcrum shaft (62) as the nut body (57) moves back and forth. The lower end of the vertical rod (66) suspended from the upper end of the vertical link (63) is connected to the vertical frame (47), and the vertical transfer device (42) and the tip transfer device having the drive case (44) as a fulcrum. (4
3) A downward load is hung and supported by a handling depth adjusting mechanism, so that the position can be maintained at the vertical turning position after the handling depth is adjusted.

A balance spring (67) for urging the vertical link (63) to rotate in the direction of pulling up the vertical rod (66) is stretched between the vertical link (63) and the base (56).

The vertical conveying device (42) is provided with a grain culm sensor for detecting the presence or absence of grain culm, and the culm length sensors (50a) (51b) are provided only when the grain culm is detected.
Based on the above, the depth control for controlling the operation of the forward / reverse rotation motor (59) by the controller is performed. That is, when both the culm length sensors (50a) (51b) are both turned off (during short culm), or when the culm length sensors (50a) (51b) are both turned on (during long culm), the tip side The motor (59) is operated in the forward and reverse directions so that the culm length sensor (50a) of the No. and the culm length sensor (50b) of the culm side are turned on, and the vertical conveying device (42) and the tip conveying by the handling depth adjusting mechanism. By vertically rotating the device (43) integrally around the horizontal axis around the drive shaft case (44) as a fulcrum, it is possible to maintain a constant length of the tip supplied to the threshing section (4). .

Further, as shown in FIG. 1, when the vertical conveying device (42) and the tip conveying device (43) rotate left and right in conjunction with the left and right slides of the pretreatment device, the fulcrum of rotation is the vertical drive shaft ( 45), if this is simply rotated right and left, the vertical conveyance device (4
2) and the start position of the tip transport device (43) is (A) when the pretreatment device is moved to the right slide position.
When it is at the height position of (A ') and is moving to the left slide position, it becomes (B) and (B'), and when the pretreatment device is moved to the left slide position, the vertical conveying device (42)
And the start end of the tip transport device (43) is raised. However, the vertical transfer device (42) and the tip transfer device (43) are connected to the swing transmission shaft case (29) by the handling depth adjusting mechanism, and are linked to the left and right slides of the pretreatment device. The rocking transmission shaft case (29) also has a vertical axis (3
1) Around the vertical link (63) and the vertical rod (66), the height positions of the vertical link (63) and the vertical rod (66) hardly change because they rotate left and right around and move in a substantially horizontal direction. When (43) rotates left by interlocking with the left slide of the pretreatment device, it simultaneously rotates downward around the horizontal axis.
As a result, when the pretreatment device is moved to the left slide position, the vertical transfer device (42) and the tip transfer device (43).
The starting end positions of the vertical conveying device (42) and the tip conveying device (43) can be maintained substantially constant even if the pretreatment device slides left and right. ing.

Further, the handling depth adjusting mechanism is a vertical transfer device (4
2) and the tip transfer device (43) are hung by the vertical rod (66), almost no bending force acts on this vertical rod (66), and only tensile force acts on this vertical rod (66). ) And the balance spring (67) is attached to the vertical link (63) and at a position closer to the rotation fulcrum, the expansion and contraction is reduced and it can be assembled in a small space. Moreover, since the nut body (57) linearly moves on the screw shaft (58) and the vertical link (63) rotates, the action points of the nut body (57) on the vertical link (63) are the shortest culm and the longest culm. Since it is sometimes farthest from the fulcrum, the torque required for the motor (59) can be reduced, which allows the handling depth adjusting mechanism to be made compact and the cost to be reduced at the same time. Further, the screw shaft (58) and the vertical link (6
By changing the angle formed by 3) and 3), the rotation amount of the vertical link (63) can be changed even with the screw shaft (58) of the same length, and the vertical transfer device (42) and the tip transfer device (43) can be changed. The vertical rotation position and the rotation amount can be easily set.

[0019]

As is apparent from the embodiments described above, the present invention is configured such that a pretreatment device having a raising device, a scraping device, and a cutting blade is slidable to the left and right, and a vertical conveying device is provided around a rear horizontal axis. It can be rotated up and down, and can be rotated diagonally left and right with a predetermined inclination in conjunction with the left and right slides of the pretreatment device, and can be rotated substantially horizontally in conjunction with the left and right slides of the pretreatment device. In a combine harvesting device provided with a transmission shaft case for a moving pretreatment device, the vertical conveyance device is used as a transmission shaft case, and a vertical movement device is vertically rotated around a rear horizontal axis through a handling depth adjusting mechanism. Because of the connection, even if the vertical conveyance device rotates left and right in conjunction with the left-right slide of the pretreatment device, the position of the vertical conveyance device does not change, and the threshing performance is not adversely affected.

Further, since the handling depth adjusting mechanism has a link mechanism for suspending the vertical conveying device, a bending member does not act on the link mechanism and a connecting member having lower strength than the conventional one can be used.
The handling depth adjusting mechanism can be made compact and the cost can be easily reduced, and malfunctions and failures due to twisting of the link mechanism can be eliminated.

[Brief description of drawings]

FIG. 1 is a front view showing a horizontal rotation operation of a vertical conveyance 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 side view of the reaper.

FIG. 6 is a plan view of a reaping unit.

FIG. 7 is a plan view showing a horizontal rotation operation of the vertical conveyance device.

FIG. 8 is a front cross-sectional view of a reaping input shaft case portion.

FIG. 9 is a plan view showing a power transmission structure of a reaping unit.

FIG. 10 is a side view of the handling depth adjusting unit.

FIG. 11 is a plan view of a handling depth adjusting unit.

[Explanation of symbols]

 (17) Raising device (18) Scraping device (19) Cutting blade (29) Transmission case (42) Vertical transfer device (45) Vertical transfer drive shaft

Claims (2)

[Claims] 1. A pretreatment device having a raising device, a scraping device, and a cutting blade is configured to be slidable to the left and right, and a vertical conveyance device is rotatable up and down around a rear horizontal axis. It is configured to rotate diagonally left and right with a predetermined inclination in conjunction with left and right slides, and a transmission shaft case for the pretreatment device that rotates substantially horizontally in conjunction with left and right slides of the pretreatment device is provided. In the combine harvesting device, the vertical transporting device is connected to the transmission shaft case via a handling depth adjusting mechanism for vertically rotating the vertical transporting device around a horizontal axis. 2. The combine harvesting device according to claim 1, wherein the handling depth adjusting mechanism has a link mechanism for suspending the vertical conveying device.