JP2015084707A - Combine harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide simplified belt-type gear change means capable of variably controlling reaping speed of a reaping part in a combine harvester.SOLUTION: The combine harvester includes: an input shaft (16) to a threshing part (9) erected at the front part of the threshing part (9) in an attitude facing the horizontal direction; an input shaft (17) to a reaping part (8) erected in an attitude parallel to the input shaft (16); threshing input pulleys (18a and 18b) and reaping input pulleys (19a and 19b) each of which integrally includes large and small different-diameter pulleys, journaled to the input shaft (16) of the threshing part (9) and the input shaft (17) of the reaping part (8) respectively; and a high-speed-side transmission belt (20H) and a low-speed-side transmission belt (20L) laid across the threshing input pulleys and the reaping input pulleys. The combine harvester can be thus changed over between a state of acting a tension clutch pulley (22) operable from a driver's seat (12) on the high-speed-side transmission belt (20H) and a state of acting it on the low-speed-side transmission belt (20L).

Description

  The present invention relates to a combine harvester for harvesting and harvesting stem straw such as rice wheat and rapeseed.

  Conventionally, a threshing feed chain of a threshing device or a cutting and conveying device of a reaping unit is generally driven by using a stepped transmission having a two-speed range of high speed and low speed. It is known (see, for example, Patent Document 1).

The stepped transmission includes a gear type stepped transmission as disclosed in Patent Document 1 and a belt type stepped transmission.
In particular, in the latter belt type stepped transmission, the high-speed tension pulley and the low-speed tension pulley are alternately applied to the high-speed transmission belt and the low-speed transmission belt to switch between the high-speed side and the low-speed side. What to operate is known.

JP 2008-86243 A

  SUMMARY OF THE INVENTION An object of the present invention is to provide a simple belt-type transmission means that performs shift control of the cutting speed of a cutting unit in a combine.

In order to solve the above problems, the present invention has taken the following technical means.
That is, the invention described in claim 1 includes an input shaft (16) to the threshing portion (9) installed in a posture facing the left-right direction on the front portion of the threshing portion (9), and parallel to the input shaft (16). An input shaft (17) to the mowing unit (8) installed in a proper posture, an input shaft (16) to the threshing unit (9) and an input shaft (17) to the mowing unit (8) And a threshing input pulley (18a, 18b) and a reaping input pulley (19a, 19b), which are integrally provided with large and small diameter pulleys, respectively, and provided between the threshing input pulley and the reaping input pulley. (20H) and the low-speed side transmission belt (20L), a state where the tension clutch pulley (22) operable from the driver's seat (12) acts on the high-speed side transmission belt (20H), and the low-speed side transmission belt (20L) and acting on Is combined, characterized in that are configured to be exchange.

  According to a second aspect of the present invention, the tension clutch pulley (22) includes a shaft of the input shaft (16, 17) between a tension position of the high speed transmission belt (20H) and a tension position of the low speed transmission belt (20L). The combine according to claim 1, wherein the combine is configured to be slidable in a central direction.

  According to a third aspect of the present invention, the speed change lever (21) for switching the tension clutch pulley (22) opens and closes the tension clutch by a swing operation in the front-rear direction, and moves the tension position at a high speed by a slide operation in the horizontal direction. The combine according to claim 1 or 2, wherein the combiner is configured to switch between a low speed side and a low speed side.

  The invention according to claim 4 is provided with a safety cover (26) that covers the belt speed change mechanism from the outside, and the safety cover (26) is configured to be able to swing upward and open and to be opened and closed from the operating position. A combine according to claim 1 or claim 2 or claim 3.

  In short, according to the first aspect of the present invention, the cutting speed can be easily changed according to the situation of the culm to be harvested, and the speed can be easily changed depending on the type of the crop, thereby improving the crop adaptability. To do. In addition, the speed change operation can be easily performed from the driving position, and the work efficiency can be increased.

  According to the second aspect of the invention, in addition to the effect of the first aspect of the invention, the tension clutch pulley (22) is switched between the high speed side and the low speed side by sliding, so that one tension arm or tension pulley is used. Thus, the cutting speed can be changed, and it can be carried out at a low cost.

  According to the invention described in claim 3, in addition to the effect of the invention described in claim 1 or 2, it is not necessary to separately provide a tension clutch on / off lever and a tension clutch pulley (22) switching lever. The configuration of the tension switching operation mechanism can be simplified.

  According to the invention of claim 4, in addition to the effect of the invention of claim 1 or claim 2 or claim 3, according to the above configuration, the safety cover (26) is configured to swing open and close. Belt replacement and maintenance of the belt transmission mechanism can be performed easily. Moreover, since the safety cover swings upward, it can be easily opened and closed even in a narrow space between the driver's seat and the threshing portion, and maintenance can be easily performed from the driving position.

Side view of general purpose combine Front view of the main part of a general-purpose combiner Front view of the main part Same as above Side view of the main part Top view of the feed conveyor Side view of the main part Disassembled perspective view of tension roller Side view of main parts of feed conveyor Side view of the main part Side view of general purpose combine Rear view of main parts of general combine Side view of the main part Rear view of the main part Side view of general-purpose combiner with sun visor Front view of the main part Side view showing sun visor support configuration Front view of the main part Side view when sun visor is set in Glentank Front view of the main part Side view with sun visor set in Glen Hopper Front view of the main part

An embodiment of the present invention will be described with reference to the drawings.
FIG. 1 and FIG. 2 show a general-purpose combine that harvests and harvests crop stalks such as paddy and rapeseed that grow up in the field, and has a pair of left and right traveling crawlers 2 and 2 at the bottom. On the front side of the vehicle body 1, a scraping reel 4 having a scraping tine 3 for scraping the crop stalk backward, a clipper-type horizontal cutting blade device 5 for cutting the stalk after scraping, and a stem after cutting A pre-cutting processing unit 8 including a scraping auger 7 and the like for scraping the scissors onto the table 6 is provided.

  In the feeder house 10 equipped from the left side to the rear side of the pre-cutting processing unit 8, the feed conveyor 11 that inherits the crop stalks from the pre-cutting processing unit, lifts and conveys the crops up and feeds them into the threshing unit 9. Is equipped. On the right side of the feeder house 10, a driving operation unit including a driver's seat 12 and an operation box 13 is installed, and a sun visor 14 is provided above the operation unit, and a crop is temporarily stored behind the driving operation unit. A Glen tank 15 is installed.

  The threshing input shaft 16 to the threshing portion laid horizontally on the front side of the threshing portion 9 and the cutting input shaft 17 to the feed conveyor 11 of the pre-cutting processing portion 8 have threshing input pulleys 18a and 18b having large and small diameters and cutting. Input pulleys 19a and 19b are attached to the shaft, and the high speed side transmission belt 20H and the low speed side transmission belt 20L are wound between the threshing input pulleys 18a and 18b and the reaping input pulleys 19a and 19b, and from the position of the driver seat 12 The tension clutch pulley 22 is switched between the high speed side and the low speed side by operating the speed change lever 21 so that the speed change control in two steps can be performed.

  In the embodiment shown in FIG. 2, the tension clutch pulley 22 is configured such that the tension arm 23 swings and displaces with the threshing input shaft 16 as a fulcrum. And switching to the low speed side.

  In the embodiment shown in FIG. 3, the tension arm 23 is configured to be slidable in the left and right direction integrally with a separately mounted slide shaft 24, and the tension position to the high speed side transmission belt 20 </ b> H and the low speed side transmission The belt 20L is configured to slide through a tension spring 25 between a tension position on the belt 20L.

  Further, the tension clutch pulley 22 turns the tension clutch on and off by a forward / backward swing operation around the slide shaft 24 core of the speed change lever 21 or the threshing input shaft 16 core disposed near the driver's seat 12, It is interlocked to switch the tension position between the high speed side and the low speed side by a sliding operation (in the direction of the threshing input axis).

  The safety cover 26 covering the belt-type transmission mechanism is configured so as to be able to swing upward and open with the upper support shaft as a rotation fulcrum, and is arranged so that it can be easily opened and closed from the operating position. This is effective when the belt-type transmission mechanism is accommodated in the space between the driver's seat 12 and the threshing unit 9.

  In the tension roller 30 at the starting end of the feed conveyor 11, as shown in FIG. 6, the cylindrical drum 31 at the center of the tension roller 30 is divided into half cylinders 31a and 31b that can be removed by nom bolts 32, and The removed cylindrical drum portion is taken out from the cleaning port of the feeder house 10 with the cleaning lid 33, and the space between the bottom surface of the feeder house and the feed conveyor start end is widened, so that the clogged crop can be easily removed.

  Further, as shown in FIGS. 9 and 10, the tension roller 30 at the beginning of the feed conveyor 11 is lifted upward via a push-up jack 34 to form a wide space between the lower portion of the tension roller and the lower surface of the feeder house, thereby It can also be configured to facilitate removal.

  In the example of FIG. 11, the tension roller shaft 35 protrudes to the left outside from the feed conveyor 11 and a handle 36 or a pulley is attached. When clogging occurs, the handle 36 is rotated in the reverse direction so that the clogging material is discharged forward and removed. It is composed.

Note that a handle may be provided on the input shaft on the input end side of the feed conveyor, and when the jam occurs, the feed conveyor may be rotated in reverse by operating the handle to remove the clogging.
Next, the embodiment shown in FIGS. 12 to 14 will be described. On the outer side surface portion of the step frame 38, a lower first step 39 close to the ground and a second upper step close to the step floor 37 via the support bracket 42. Step 40 is provided. In contrast to the fixed second step 40, the first step 39 is pivotally fixed around the support pin 41 so that it can be switched between the step use state and the step storage state shown in FIG.

On the back side of the first step 39 and the second step 40, the foot-tip mounting plates 43a and 43b are fixedly provided on the step frame side, so that the step of the foot-tip can be stabilized.
In the embodiment shown in FIGS. 15 and 16, the columns 44 </ b> L and 44 </ b> R of the sun visor 14 are erected from both sides of the front surface of the operation box 13 located on the front side of the driver's seat 12, and the middle portion of the column is placed in the operation box 13. It is also connected and held by an operation handle 45 projecting upward from the top.

Further, the sun visor 14 is configured such that the vertical position can be changed and adjusted by an adjusting mechanism 46 provided in the middle of the support column 44.
In the embodiment shown in FIGS. 17 and 18, the columns 44 </ b> L and 44 </ b> R that support the sun visor 14 via the support frame 47 and the frame stay 48 have a plurality of attachment plates 49 a each having several attachment holes 50. 49b and 49c can be mounted and supported, and installed in the mounting holes provided in the tank and hopper as common parts in the Glen tank 15 specification as shown in FIGS. 19 and 20 and Glen Hopper 51 specification as shown in FIGS. It has a structure that can be supported.

8 Mowing section (processing section before harvesting)
DESCRIPTION OF SYMBOLS 9 Threshing part 12 Driver's seat 16 Threshing input shaft 17 Cutting input shaft 18 Threshing input pulley 19 Cutting input pulley 20H High speed side transmission belt 20L Low speed side transmission belt 21 Shift lever 22 Tension clutch pulley 23 Tension arm 24 Slide shaft 26 Safety cover 27 Support Shaft 21 Longitudinal cutting blade device 27 Cutting blade drive shaft 31 Wobble mechanism 32 Wobble shaft 33 First swing arm 34 Second swing arm

Claims (4)

  An input shaft (16) to the threshing portion (9) installed in a posture facing the left-right direction at the front portion of the threshing portion (9), and a cutting portion (8) installed in a posture parallel to the input shaft (16) ), And an input shaft (16) to the threshing portion (9) and an input shaft (17) to the reaping portion (8) are integrated with pulleys having different diameters. The threshing input pulleys (18a, 18b) and the reaping input pulleys (19a, 19b) that are provided are respectively provided on a shaft, and the high speed side transmission belt (20H) and the low speed side transmission belt (20L) are provided between the threshing input pulley and the reaping input pulley. ) And the tension clutch pulley (22) operable from the driver's seat (12) is switched between a state acting on the high speed side transmission belt (20H) and a state acting on the low speed side transmission belt (20L). It is configured to be possible Combine that.   The tension clutch pulley (22) is configured to be slidable in the axial direction of the input shaft (16, 17) between a high-speed transmission belt (20H) tension position and a low-speed transmission belt (20L) tension position. The combine according to claim 1.   The speed change lever (21) for switching the tension clutch pulley (22) is used to turn the tension clutch on and off by swinging back and forth, and to switch the tension position between the high speed side and the low speed side by sliding left and right. The combine according to claim 1 or claim 2 configured.   A safety cover (26) for covering the belt transmission mechanism from the outside is provided, and the safety cover (26) is configured to be able to swing upward and open so that it can be opened and closed from the operating position. Or the combine of Claim 3.

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