JP2008263909A5 - - Google Patents

Description

Combine

  The present invention relates to a combine harvester for harvesting grains such as soybeans, red beans, rice, wheat and buckwheat.

Conventionally, a combine equipped with a take-up reel type mowing device is known. The take-up reel is provided with a reel transmission connected to a drive mechanism of the take-up reel in order to change the rotation speed according to the type of crop to be cut and the posture of the cereal.
JP 2002-360038 A JP 2001-327214 A

According to the inventions described in Patent Documents 1 and 2 above, it is necessary to perform shift switching by the reel transmission device interlocked with the drive mechanism of the take-up reel while the take-up reel is being driven.
Therefore, there is an inconvenience that the reel transmission device cannot be shifted when the combine drive is stopped. Further, when the reel transmission becomes large, there is a problem that the transmission part comes into contact with the culm during the cutting operation and threshing, resulting in a harvest loss.
An object of the present invention is to provide a combine having a compact take-up reel capable of switching the shift of a reel transmission device even when driving is stopped.

The above-described problems of the present invention can be solved by the following means.
The invention according to claim 1 is a combine comprising a reaping device (6) having a take-up reel (12) and a transmission (34) for changing the rotational speed of the take-up reel (12). (34) includes a reel drive shaft (36), a rotation fulcrum (41a) provided in the vicinity of the reel drive shaft (36), and a slide gear (41) that rotates about the rotation fulcrum (41a). ) Provided on the rotation shaft (12a) of the plurality of transmission sprockets (37a to 37d) having different effective diameters and the plurality of transmission sprockets (37a to 37d) and the take-up reel (12). and a chain (38) which wound around the sprocket (12b), said Li by rotation of one said sliding gear shifting sprockets (41) of said multiple gear shifting sprockets (37a to 37d) And the shift sprocket moved on the axis of the reel drive shaft (36) and the end of the reel drive shaft (36) are engaged. It is a feature combine.

According to a second aspect of the invention, the rear of one lateral side to provide a cockpit (10), a slide operable shift rod from the cockpit (10) side to the vehicle body width direction of the cutting device (6) (44) the provided by the sliding gear in conjunction with the sliding of the shift rod (44) (41) slides into the machine body transverse direction, the sliding gear plurality of arranged rotatably on the circumferential surface (41) The combine according to claim 1, wherein any one of the speed change sprockets (37a to 37d) is engaged with the end of the reel drive shaft (36).
According to a third aspect of the present invention, a gear (44b) that meshes with the slide gear (41) is provided at an end of the speed change rod (44), and the speed change rod (44) is slid in the body width direction and then the speed change. The combine according to claim 2, wherein the slide gear (41) is rotated by rotating the rod (44).

According to the first aspect of the present invention, a plurality of speed change sprockets ( 37 a to 37 d ) having different diameters provided on the circumference of the slide gear ( 41 ) that can rotate around the rotation fulcrum ( 41 a ). Although by turning over the input sprocket provided on the rotating shaft of write reel (12) (12a) (12b) and a chain (38), said chain when shifting the rotational speed of the scraping reel (12) One of the plurality of speed change sprockets ( 37a to 37d ) multiplied by ( 38 ) is removed from the reel drive shaft ( 36 ) and replaced with another speed change sprocket ( 37a to 37d ) having a different effective diameter. By engaging with and driving the shaft ( 36 ) , the take-up reel ( 12 ) can be shifted, and a transmission ( 34 ) provided for shifting the take-up reel ( 12 ). ) Can be made compact.

Therefore, the width of the machine body is suppressed, and the harvest loss due to threshing is reduced because there is little catching or contact with the uncut side of the field on the side of the combine. Further, since the rotation speed of the scraping reel ( 12 ) can be changed even when the reel drive shaft ( 36 ) is stopped, the speed can be changed regardless of whether the combine is in operation or stopped. Efficiency can be improved.

According to the invention described in claim 2, in addition to the effect of the invention described in claim 1, when it is desired to change the speed of the transmission ( 34 ) , the transmission rod ( 44 ) is remotely operated from the cockpit ( 10 ) side. Therefore, the shifting operation of the transmission ( 34 ) can be easily performed, and the work efficiency of the combine can be improved.
According to the invention of claim 3, in addition to the effect of the invention of claim 2, the slide rod (44) is slid from the cockpit (10) side and then rotated to rotate the take-up reel (12). The rotational speed can be changed.

Embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a side view of a combine having a scraping reel that performs a grain harvesting operation according to an embodiment of the present invention, FIG. 2 is a plan view of the combine of FIG. 1, and FIG. 3 is each drive of the combine of FIG. FIG. 4 is a side view showing a take-in reel and its transmission, and FIG. 5 is a plan view of FIG. 4 (FIG. 5 (a)) and main parts of the transmission of FIG. 5 (a). 6 is a side view (partial sectional view) of the part (FIG. 5B) and a partial sectional view of the reel drive shaft part of FIG. 5A (FIG. 5C).
In this specification, the left and right sides in the forward direction of the combine are referred to as left and right, respectively.

At the bottom of the traveling frame 2 of the combine 1 shown in FIG. 1, a crawler 4 formed of a flexible material such as rubber is formed into an endless belt shape and wound around a drive sprocket 4a and a plurality of idler wheels 4b. Needless to say, the traveling device 3 is configured to be able to travel without being largely submerged in the wet field, and a front reel of the traveling frame 2 is mounted with a scavenging reel type mowing device 6 so that the combine 1 on the upper portion of the traveling frame 2 is advanced. A threshing device 7 is mounted on the left half side in the direction. The grain that has been threshed by the threshing device 7 and selected as straw or the like is temporarily stored in a grain tank 8 arranged on the right half side in the traveling direction of the combine 1, and the grain is stored in the grain tank 8. Is accumulated. As shown in FIG. 3, the grain fed downward by a rotary valve provided at the bottom of the Glen tank 8 is conveyed to the discharge cylinder 9 by the pressurized air from the blower 52, and the discharge port at the tip of the discharge cylinder 9 To the outside of the combine 1. Further, an operation seat (control seat) 10 is provided in a cabin 11 on which an operator rides and operates between the reaping device 6 and the threshing device 7 on the upper side of the traveling frame 2.

  On both sides of the reaping device 6 having the take-up reel 12, the weed ridges 13 are arranged. The planted culm in the field that has been scraped off by the weed culm 13 and raked by the rotating scraping reel 12 is trimmed by the cutting blade 15, and the obtained culm is fed into the auger 16. .

  When the power transmission mechanism shown in FIG. 3 is described, the cereal straw is fed from the auger 16 to the threshing apparatus 7 (FIGS. 1 and 2) by an elevator 19 that is attached to a chain 18 and driven obliquely upward. The cereals contained in the object to be processed are threshed by a handling cylinder 20 (not shown), sieved by a swinging shelf 21 in a sorting room (not shown) provided below the handling chamber, and dropped into the processed object. The to-be-processed object which is blown away by the air-blow sorting by the first and falls to the first transfer trough on the front side is made up of grains, and the milling cylinder (Fig. 1 and Fig. 2) connected to the Glen tank 8 (Figs. 1 and 2) by the first conveyor 24 (Not shown) and is put into the Glen tank 8 by the milling cylinder.

  In addition, the object to be processed that contains a large amount of the second product (normal grain, branch raft, ear cut grain, scorpion grain, sawdust, etc.) that has fallen into the second transport trough on the rear side is contained in the second transport trough. From the provided second conveyor (lower) 27, the second conveyor (upper) 25 is sent to the handling cylinder 20 in the handling chamber again, threshed again, and sent to the Glen tank 8 by the first conveyor 24.

  The power of these devices is from the transmission system from the engine 28 via the hydrostatic continuously variable transmission 30 and the gear transmission 31, and from the transmission system from the engine 28 via the second transmission 32 to the elevator of the reaping device 6. 19 is input.

  FIG. 4 shows a side view of the take-up reel 12 and its transmission 34. Further, as shown in FIG. 5, the speed change device 34 of the take-up reel 12 is a speed change sprocket 37 (37a) which can freely engage and disengage from the input sprocket 12b and the reel drive shaft 36 which rotate integrally with the rotary shaft 12a of the take-up reel 12. ˜37d), an endless chain 38 is stretched over. The sprocket 40 having the largest diameter with the reel drive shaft 36 as the central axis is a sprocket for inputting power from the elevator 19 shown in FIG.

  The transmission sprocket 37 is composed of four transmission sprockets 37 a to 37 d having different effective diameters, which are rotatably supported on a circumference around the central shaft 41 a of the slide gear 41.

  A center shaft 41a of the slide gear 41 is a shaft that supports a boss portion 41b integral with the slide gear 41 so as to be slidable in the axial direction. A shift rod 44 supported by a reel support frame 42 is connected to a shift handle 44a (FIG. 2). ) In the direction of arrow A (FIG. 5), the inner end surface of the gear 44b fixed to one end of the speed change rod 44 hits the shifter 45 and pushes the front end of the shifter 45 to the inside of the cutting width. . The shifter 45 is configured as a balance-rotating type having a square shape in plan view. When the front end portion of the shifter 45 is pushed inside the cutting width, the rear end portion protrudes outside the cutting width.

  The boss portion 41b of the slide gear 41 is locked to the rear end portion of the shifter 45, and the operation of the shifter 45 causes the slide gear 41 supported by the boss portion 41b to resist the biasing force of the spring 46. It can slide in the direction of arrow B along the central axis 41a. When the slide gear 41 is pushed by the shifter 45 and slides in the direction of arrow B, the spline portion 36a provided on the outer periphery of the tip end portion of the reel drive shaft 36 and the spline provided on the inner peripheral surface of the hole of the boss portion of the transmission sprocket 37a. The engagement with the portion 37aa is released. Thereafter, a shift handle 44a (FIG. 2) attached to the other end of the speed change rod 44 is rotated to rotate the slide gear 41 by 1/4 turn, and the next speed change sprocket 37b is moved to the axis of the reel drive shaft 36. It is moved on the core wire and moved to a position where it can engage with the spline portion 36a at the tip of the reel drive shaft 36. When the speed change rod 44 is moved in the arrow B direction by operating the speed change handle 44a, the shifter 45 and the slide gear 41 are returned to their original positions by the urging force of the spring 46, and another speed change sprocket 37b having a different effective diameter is used as the reel. The spline portion 36a of the drive shaft 36 is splined with the spline portion 36a so as to rotate integrally. As shown in the state where the sprocket 37a is extracted from the tip of the reel drive shaft 36 in FIG. 5C, the transmission sprocket 37a is spline-engaged with the spline 36a at the tip of the reel drive shaft 36, and this The chain 38 is also wound around the two transmission sprockets 37b and 37d adjacent to each other. However, since these transmission sprockets 37b and 37d are in a freely rotating state, they are only driven and rotated by driving the chain 38.

  By engaging any one of the four transmission sprockets 37a to 37d having different effective diameters with the reel drive shaft 36, the rotational speed of the rotary shaft 12a of the take-up reel 12 can be changed in four stages. It is possible, and the structure for shifting over 4 stages is compact, so the body width is suppressed, and the influence on the uncut side of the field is small, so that it is less likely to come into contact with the uncut grain slag, Harvest losses due to threshing are also reduced.

  Since the operation of changing the rotational speed of the take-up reel 12 can be performed by the speed change handle 44a provided at the tip of the speed change rod 44 on the right side of the fuselage of the operation seat 10, the operator can easily rotate the take-up reel 12 by remote control. The speed can be changed. Further, the adjacent shift sprocket among the four shift sprockets 37a to 37d having different effective diameters by one rotation of the shift handle 44a is engaged with the spline portion 36a of the reel drive shaft 36. The shift state of the reel 12 can be clearly understood. Further, since the speed change handle 44a is provided on the right side (the already cut side) of the reaping device 6, the operator can go down to a place where there is no uncut grain culm in the field and perform the speed change operation of the take-up reel 12.

In addition, since the speed change rod 44 for remote operation is arranged behind the reel support arm 48, the tip side of the cereal scraped by the take-up reel 12 becomes difficult to come into contact with the speed change rod 44. However, it becomes difficult to obstruct the conveyance of long crops, and a stable scraping and conveying action to the auger 16 can be expected. The reel support arm 48 supports a sprocket 49 (FIG. 4) for forming a bypass of the chain 38 provided near the reel drive shaft 36 and the rotary shaft 12 a of the take-up reel 12. The reel support arm 48 can move the scraping reel 12 up and down in the direction of arrow C (FIG. 1) with the reel drive shaft 36 as a pivot point.
As shown in FIG. 1, the outer surface of the reel support arm 48 is covered with a cover 50.

  In the following invention, after threshing the cereals harvested by the scraping reel 12, the obtained grain is blown and conveyed from the glen tank 8 to the discharge cylinder 9 using the blower 52 shown in FIGS. A power transmission mechanism from the engine 28 to the blower 52 at the upper right of the power transmission mechanism diagram of FIG. 3 is used.

  FIG. 6A shows a right side view of the grain tank 8 portion of the combine of FIG. 1, and FIG. 6B shows a front view of the Glen tank 8 seen from the direction of arrow A in FIG. 6A. FIG. 7A shows a front view of the feeding feeder 53 portion for blowing air disposed in the lower part of the Glen tank 8 as seen from the direction of arrow A in FIG. 6A, and FIG. The rotary blade 53a inside the feeding feeder 53 of (a) is shown.

  As shown in FIG. 6A, the blower 52 is disposed in a space below the grain tank 8, and sends air blown from the blower 52 to the passage below the feed feeder 53 for the grains discharged from the grain tank 8, The grain is sent out from the lower passage of the feeder 53 toward the discharge tube 9.

  The blower 52 is driven by transmitting the driving force of the engine 28 by turning a discharge clutch (not shown) on and off with a manual lever. The drive motor 54 of the feeding feeder 53 starts after this predetermined time due to the “engagement” of the discharge clutch, and the feeding feeder 53 starts to drive.

  In addition, a grain sensor 55 (FIG. 7A) is provided on the inclined inner surface of the Glen tank 8 directly above the feeding feeder 53. A control device (not shown) integrates the time that the feeding feeder 53 is rotating after the grain sensor 55 is turned off, and after a certain time, the discharge clutch (not shown) is turned off to reduce the rotation of the engine 28. Further, a control device (not shown) operates the turning motor 57 (FIG. 6A) of the discharge cylinder 9 to instruct to automatically turn the discharge cylinder 9 facing the vertical direction to the retracted position on the fuselage by the gear 58. When a storage button (not shown) to be performed is pressed, the grain air blow control by the blower 52 or the like is stopped. Even when the operator leaves the operation seat 10 in this way, the high-speed rotation of the engine 28 is not continued after the grains are discharged from the discharge cylinder 9, and fuel consumption can be suppressed.

When a control device (not shown) turns on an automatic stop switch (not shown), the discharge cylinder 9 facing the vertical direction after the grain discharge is automatically returned by the gear 58 to the storage position by the turning motor 57, and then the engine. When 28 is automatically stopped, even if the operator leaves the operation seat 10 during this time, the high rotation of the engine 28 is not continued after the grain is discharged from the discharge tube 9, and fuel consumption can be suppressed. . Further, if an alarm is sounded when the discharge tube 9 is automatically returned to the storage position, the operator can be alerted even if the operator leaves the operation seat 10.
Although the discharge cylinder 9 is not described in detail, the extension length of the discharge cylinder 9 can be expanded and contracted by an automatic extension switch and an automatic storage switch.

  The present invention has applicability to agricultural machines such as combine harvesters.

It is a left view of the combine which performs the harvesting operation | work of the grain which is one Example of this invention. It is a top view of the combine of FIG. It is a power transmission mechanism figure of the main drive member of the combine of FIG. It is a detailed side view of the take-up reel type harvesting device of the combine of FIG. 4 is a plan view (FIG. 5 (a)) of the drive device for the take-up reel of FIG. 4 and a side view (partially sectional view) (FIG. 5 (b)) and FIG. FIG. 5C is a partial cross-sectional view of the reel drive shaft portion of FIG. 6A is a right side view of the grain tank portion of the combine of FIG. 1, and FIG. 6B is a front view of the grain tank as viewed from the direction of arrow A in FIG. Fig.7 (a) is a front view of the feeding feeder part for ventilation conveyance arrange | positioned at the lower part of the Glen tank seen from the arrow A direction of Fig.6 (a), FIG.7 (b) is FIG.7 (a). It is a figure which shows the rotary blade inside the feeding feeder.

DESCRIPTION OF SYMBOLS 1 Combine 2 Traveling frame 3 Traveling device 4 Crawler 4a Drive sprocket 4b Idle rolling wheel 6 Harvesting device 7 Threshing device 8 Glen tank 9 Discharge tube 10 Operation seat (control seat) 11 Cabin 12 Stuck reel 12a Rotating shaft 12b Input sprocket 13 minutes Kusanagi 15 Cutting blade 16 Auger 18 Chain 19 Elevator 20 Handling cylinder 21 Swing shelf 23 Kara fan 24 First conveyor 25 Second conveyor (upper) 27 Second conveyor (lower)
28 Engine 30 Hydrostatic continuously variable transmission 31 Gear transmission 32 Second transmission 34 Stake reel transmission 36 Reel drive shaft 36a Reel drive shaft spline part 37 (37a to 37d) Speed change sprocket 38 Chain 40 Sprocket 41 Slide Gear 41a Central shaft 42 Reel support frame 44 Shift rod 44a Shift handle 44b Gear 45 Shifter 46 Spring 48 Reel support arm 49 Sprocket 50 Reel support arm cover 52 Blower 53 Feeding feeder 53a Rotating blade 54 Drive motor 55 Grain sensor 57 Turning motor 58 Gear

Claims (3)

In a combine comprising a reaping device (6) having a take-up reel (12) and a transmission (34) for changing the rotational speed of the take-up reel (12),
The transmission (34) rotates about a reel drive shaft (36), a rotation fulcrum (41a) provided in the vicinity of the reel drive shaft (36), and the rotation fulcrum (41a). A plurality of transmission sprockets (37a to 37d) having different effective diameters provided on the circumference of the slide gear (41), and a rotation shaft (12a) of the plurality of transmission sprockets (37a to 37d) and the take-up reel (12) and a chain (38) wound over the input sprocket and (12b) provided on,
One of gear shifting sprockets are moved on the axis core of the said reel drive shaft by rotation of the sliding gear (41) (36) of said multiple gear shifting sprockets (37a to 37d), said reel drive shaft (36) A combine having a configuration in which the speed change sprocket moved on the shaft core line and the end of the reel drive shaft (36) are engaged. The reaping provided device (6) behind the one lateral side cockpit (10), a slide operable shift rod (44) provided from the cockpit (10) side to the vehicle body width direction, the shift rod (44 The slide gear (41) slides in the width direction of the machine body in conjunction with the slide of (), so that the plurality of speed change sprockets (37a to 37d) arranged rotatably on the circumferential surface of the slide gear (41). The combine according to claim 1, wherein any one of the speed change sprockets is engaged with an end of the reel drive shaft (36). A gear (44b) meshing with the slide gear (41) is provided at an end of the speed change rod (44), and the speed change rod (44) is rotated after the speed change rod (44) is slid in the body width direction. The combine according to claim 2, characterized in that the slide gear (41) rotates.