JP3310562B2 - 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 harvesting pretreatment device, and more particularly, to actively transferring a cut culm or a grain culm in a state immediately before being cut to a starting end of a vertical conveying device. The present invention relates to a structure of a squeezing rotary body for transporting and an auxiliary transport device.

[0002]

2. Description of the Related Art An auxiliary conveying device is disposed above a rotator to provide a locking and conveying action to a cereal culm from the front of a mowing device. An endless swivel belt with a projection is wound around a drive wheel mounted on the drive shaft of the scraping rotary member and a driven wheel in front of the drive wheel. Then, as shown in Japanese Patent Application Laid-Open No. 8-154453, a support frame (a member denoted by reference numeral 27 in the drawings of the above-mentioned publication) attached to a support shaft of a swiveling rotary shaft.
Thus, the driven wheel was rotatably supported.

[0003]

In the structure disclosed in the above publication, power is transmitted to the drive shaft of the rotator from below, whereby the support frame of the auxiliary transfer device is fixed to the upper end of the support shaft. However, in the case of adopting a structure in which power is transmitted from above the auxiliary conveyance device to the scraping rotator due to a layout change of the pre-cutting device, etc., the support frame can be simply fixed as the drive shaft on which the support shaft rotates. Disappears. For example, it is assumed that the support frame is attached and fixed by way of a stay or the like extending from a fixing portion of the mowing pretreatment device,
Means can be considered in which the drive shaft is inserted through a large hole formed in the support frame to maintain a non-contact state between the two even if there is some dimensional error. Foreign matter, such as dust, easily enters, which is inconvenient. An object of the present invention is to make it possible to arrange and set the support frame of the auxiliary transport device without the above-mentioned inconvenience even in a structure in which the input is made to the rotator from above.

[0004]

[Means for Solving the Problems]

[Structure] In order to achieve the above object, the present invention relates to a raking rotator that acts on the root side of a grain stalk located near a mowing device and forcibly transfers it to a starting end of a vertical conveying device, An auxiliary transport device that locks and transfers the grain stalk from the front of the reaper to the raking rotator above the body, the auxiliary transport device being mounted on a drive shaft of the raking rotator, In a combine harvesting pre-processing device configured by winding an endless rotating band with a projection around a driven wheel body disposed in front of the driven wheel body, the driven wheel body is supported by a sheet metal support frame through which a drive shaft is inserted. Support and fixing the support frame to the fixed part of the mowing part.
The drive shaft is positioned at the upper end of the drive shaft.
And fix the position with a gear case.
Slidably fitted to instrumentation, the support frame the centering member
To the gap between the drive shaft and the support frame.
It is characterized in that it is configured to be closed .

According to the first aspect of the present invention, the support frame for supporting the driven wheel and the drive shaft are fitted via the centering member. The two can be brought close to each other until they come into sliding contact with each other, so that there is almost no gap between the drive shaft and the support frame to prevent or suppress foreign substances such as straw chips and dust from entering between the drive shaft and the support frame. it can.
In addition, since the centering member can be positioned by the above-described close arrangement, it is possible to maintain the position of the support frame without rattling due to the presence of the drive shaft, or to correct the lateral displacement of the support frame and to assist the auxiliary transport device. , It is possible to exert a knock-pin-like effect of causing the regular set position to appear.

In other words, either a structure in which the power to the scraping rotary body is input from above by extending the drive shaft thereof, or a structure in which power is input to the drive shaft from below as in the conventional case. However, it is possible to prevent foreign matter from entering through a gap between the support frame of the auxiliary transport device and the rotating drive shaft, and to position the support frame using the drive shaft.

[Effect] As a result, in the combine according to the first aspect, the structure in which the drive shaft of the squeezing rotary body penetrates the support frame of the auxiliary transfer device can position the support frame with the drive shaft, and can be driven. Pre-cutting processing to transmit power to the drive shaft from above or to extend the drive shaft upwards, because it was possible to achieve a desirable state where functions could be shared so that foreign matter could be prevented from entering between the shaft and the support frame. The layout of the department could be reasonably constructed.

[0008]

FIG. 1 shows a side view of a self-removable combine harvester with two rows of cuts.
A cutting section 4 which is a pre-cutting device is connected to the front of the body 2 having a horizontal axis fulcrum P so as to be vertically oscillated by a hydraulic cylinder 3. A device 5, a control unit 6, a grain hopper 7, an engine 8, and the like are mounted.

The cutting section 4 includes a cutting section main frame 9 supported so as to be able to swing up and down about a horizontal axis fulcrum P, a pair of left and right raising devices 10a and 10b arranged in parallel, and a raised grain stalk. Clipper-type reaper 11 that cuts the root of a plant, a pair of left and right packers that rake the cut culm into the middle of the cutting width and join
(Scraping rotating body equivalent) 12a, 12b, each packer upper extending out the right and left pair of auxiliary conveying device cantilevered obliquely forward from 13, cutting culms in its side position is conveyed rearwardly upwards A vertical transport device 15 and the like for transferring the feed chain 14 to the threshing device 5 are provided.

The vertical transport device 15 comprises a stock-holding / transporting mechanism 15a acting on the grain culm stock side and a head locking transport mechanism 15b acting on the grain culm tip side. It is configured to be able to adjust the handling depth by swinging up and down around the center.

Next, the transmission system will be described. As shown in FIG. 5, the output of the engine 8 is branched into a working system and a traveling system, one branch power is transmitted to the threshing device 5 and the grain discharging mechanism of the grain hopper 7, and the other branch power is traveling. The transmission is transmitted to a hydrostatic continuously variable transmission (HST) 16 as a transmission for the vehicle, and after being appropriately shifted, decelerated by a transmission case 17 and transmitted to the left and right crawler traveling devices 1. Also,
The shift output of the hydrostatic continuously variable transmission 16 is branched in the transmission case 17, and a part of the branch power is transmitted to the reaper 4.

More specifically, as shown in FIGS. 3, 5, and 6, a cutting section support table 18 erected at the front of the body 2 has a horizontal fulcrum P serving as a swinging fulcrum of the cutting section. Drive shaft 19 concentrically
The drive shaft 19 and the mowing unit drive shaft 21 of the transmission case 17 are interlockingly connected via a one-way clutch 22 and a belt transmission mechanism 23, and only the forward rotation power of the branch transmission power is provided. Is transmitted to the driving shaft 19 as a mowing unit driving force.

The base boss 9a of the mowing section main frame 9 is supported so as to be able to slide laterally along the driving shaft 19, and the base boss 9a is capable of transmitting torque to the driving shaft 19 and having a lateral position. Bevel gear 2 fitted externally so that it can slide freely
4 and a bevel gear 25 meshing with the bevel gear 24
Are mounted so as to be able to move laterally together with the base end boss 9a.
A pipe frame 27 that supports the front-rear transmission shaft 26 is extended forward from the base end boss 9a, and a bevel gear 25 is connected to the rear end of the front-rear transmission shaft 26.

As shown in FIG. 4 and FIG. 7, a tubular transmission case 28 is connected to the front end of the reaper main frame 9 horizontally and horizontally, and forwardly from the transmission case 28.
Weed weeding frames 29a, 29b, 29c are extended,
The lower portions of the left and right raising devices 10a and 10b are connected and supported at the front portions of the left and right weeding frames 29a and 29c, and 3
The reaper 11 is mounted horizontally across the weeding frames 29a, 29b, 29c.

As shown in FIGS. 7 to 9, the front end of the pipe frame 27 and the upper part of the right raising device 10a are connected by a bevel gear case 30, and the front-rear transmission shaft 26 and the input shaft 31a of the raising device 10a are connected. And bevel gears are linked. In addition, a cylindrical case 33 in which a longitudinal intermediate transmission shaft 32 interlocked with a bevel gear is inserted into a front-rear transmission shaft 26 at a lower portion of the bevel gear case 30,
Further, an intermediate bevel gear case 34 is provided at a lower portion thereof. From this intermediate bevel gear case 34, first vertically-oriented transmission shafts 35 and 36 are extended toward the lower transmission case 28 in a double shaft shape inside and outside.

The inner shaft 35 of the first vertical transmission shaft is interlocked with the lower end of the intermediate transmission shaft 32 in a speed-up state with a bevel gear, and the lower end of the inner shaft 35 has a bevel gear case 37 provided at the right end of the transmission case 28. And a bevel gear is interlocked with a lateral transmission shaft 38 inserted through the transmission case 28.
The cylindrical outer shaft 36 disposed outside the inner shaft is also interlocked with the lower end of the intermediate transmission shaft 32 in a decelerated state with a bevel gear, and the right-side packer 12a is mounted below the lower end via a torque limiter 39. , This packer 12
Drive pulley provided on top of a (corresponding to drive wheel) 4
0a is the right side scraping conveyor belt (endless rotating body with protrusion
Equivalent) 13a is wound on. It is to be noted that the left packer 12b is driven by an occlusal drive with respect to the driven right packer 12a.

The left and right auxiliary transporting devices 13 include a driving pulley 4
0a, 40b and driven pulleys disposed diagonally forward
(Equivalent to a driven wheel body) The squeezing transport belts 13a and 13b with locking projections are wound around 49a and 49b. The driven pulleys 49a and 49b are supported by sheet metal support frames Fa and Fb, which are upper cover members for the auxiliary transport device 13.

The right supporting frame Fa includes a weeding rod 29a.
A support plate 56 supported by a fixed portion of the mowing unit 4,
The outer shaft (corresponding to the drive shaft) 36, which is a packer drive shaft, is supported by a stay 58 fixed to a raising support rod 57 erected from the weeding frame 29a at the right end. It is inserted. However, a centering member 59 made of a synthetic resin such as nylon or polyamide resin is used.
The support frame Fa is mounted on the upper surface of the support frame Fa with two bolts 59a so as to be slidable on the outer shaft 36. As a result, the support frame Fa is positioned in the lateral direction by the outer shaft 36 which is a rotating member. (Figures 4 and 11
See also). Also, the presence of the centering member 59 allows the outer shaft 36
And the support frame F
This prevents foreign matter from entering the inside of the drum portion 12d of the right side packer 12a from between the outer shaft 36 and the outer shaft 36.

From the left end of the transmission case 28, a pipe frame 42 is erected via a bevel gear case 41, and a horizontal transmission shaft 38 inserted through the transmission case 28 and a second vertical transmission shaft 43 inserted through the pipe frame 42 are provided. Is linked to the bevel gear. The upper end of the pipe frame 42 and the upper part of the left raising device 10b are connected via a bevel gear case 44, and the second vertical transmission shaft 43 inserted into the pipe frame 42 and the input shaft of the raising device 10b. 3
1b is interlocked with the bevel gear.

The left support frame Fb is supported by a support shaft 48 attached to the pipe frame 42 and a stay 60 fixed to a raising support rod 67 erected from the weeding frame 29c at the left end. (See Fig. 4), left side
The packer 12b is rotatably supported on a support shaft 48. The left and right driven pulleys 49a and 49b are both configured to be capable of adjusting the tension by the same structure, and the left one will be described.

As shown in FIGS. 12 and 13, the driven pulley 49b is inserted into a shaft bolt 63 via a collar 61 and a washer 62, and the shaft bolt 63 is tightened to a nut portion 64a of a tension member 64. Thus, it is fixed to the support frame Fb. A long hole 65 is formed in the support frame Fb together with the stay 60.
Are fixedly fastened together by a collar 61, a washer 62, a support frame Fb, and a stay 60.
And the support frame Fb are thereby integrated.

The tension member 64 is bent through an adjusting hole 66 formed in the support frame Fb to form a scraper portion 64b close to the pulley bottom at the rear side of the driven pulley 49b. In other words, since the tension member 64 is tension-moved integrally with the driven pulley 49b, a scraper function for preventing dust and foreign matters from adhering to the bottom of the pulley is always exerted satisfactorily. In addition, a tension member 64 is formed to extend forward so as to cover the elongated hole 65 formed in the stay 60 or the like regardless of the tension adjustment.

As shown in FIGS. 9 and 10, in the bevel gear case 37 provided at the right end of the transmission case 28, the cutting blade drive shaft 45 heading in the front-rear direction and the inner vertical transmission shaft 35 interlock with the bevel gear. And the cutting blade drive shaft 45
The cutting blade drive shaft 4 is engaged with a crank 46 provided at the front end of the cutting blade 11 and a vertical knife head 47 provided in the cutting device 11.
The rotation of 5 causes the mowing device 11 to reciprocate left and right at a constant stroke.

As shown in FIG. 3 and FIG.
5 is a rotating case 51 in which a common drive shaft 50 of the stock-holding / conveying mechanism 15a and the tip-locking / conveying mechanism 15b is attached to the left end of the driving shaft 19 so as to be rotatable about a horizontal axis P.
The vertical transport device 15 is vertically rocked by an electric drive mechanism (not shown) based on the detection result of the grain culm length detection sensor, so that the handling depth is maintained irrespective of the culm length. Handling depth control is performed.

Next, the support structure of the cutting unit 4 will be described. As shown in FIG. 3 and FIGS. 14 to 17, a swing frame 70 pivotally supported by the body so as to be able to swing up and down around a horizontal axis Q, and a hydraulic pressure for driving and swinging the swing frame 70. The cylinder (an example of an actuator) 3 constitutes a lifting mechanism A for driving and lowering the cutting unit 4. The oscillating frame 70 includes a left and right long pressing portion 70a that contacts the main frame 9 from below, and left and right arm portions 70b, 70b.
b and an integral bent pipe integrated with the fulcrum pipe 70c.
On the lower surface of the area where the pressing action portion 70a contacts,
The sliding contact reinforcing member 71 is attached.

The distal end of the piston rod 3a of the hydraulic cylinder 3 is pivotally supported by a U-shaped mounting bracket 72 fixed to the pressing action portion 70a, and a stopper disk 73 screwed to the lower surface of the mounting bracket 72. And a contact member 7 capable of contacting the stopper disk 73
4 is fixed to the main body 3b of the hydraulic cylinder 3. That is, the reduction limit of the hydraulic cylinder 3, that is, the lowering limit of the mowing part 4 is determined by the contact between the contact member 74 and the stopper disk 73.
The diameter is substantially spirally changed so that the contact position with the contact member 74 can be variably adjusted by rotating the screw by loosening the screw. Therefore, a lower limit adjusting mechanism B is provided which can adjust the lower limit position of the cutting unit 4 up and down by adjusting the position of the stopper disk 73.

A lateral feed member 75 which is engaged with the main frame 9 and moves left and right integrally therewith, a screw shaft 76 which is mounted on the left and right arm portions 70b, 70b in a state of being screwed thereto, and The provision of the geared motor 77 for driving and rotating the screw shaft 76 constitutes a transverse feed mechanism C for forcibly sliding the main frame 9, that is, the cutting unit 4. Arm 70 for supporting the left side of screw shaft 76
b, a geared motor 77 is attached to the bracket 70d, and a bar member 78 for preventing rotation of the lateral feed member 75 is fixed to the left and right arm portions 70b, 70b. It is also a reinforcing member that contributes to the improvement of the strength and rigidity of 70.

As shown in FIG. 15, the load on the main frame 9 is always applied to the pressing portion 70a,
For the sake of preventing a load from acting on the
The bottom portion 75a of the cross feed member 75 having a U-shape and the main frame 9
The lower surface is set so that a gap is formed up and down even when the two are closest to each other. Bar member 78
Since the lateral feed member 75 is prevented from rotating, the bottom ends 75f, 75r of the front and rear of the lateral feed member 75 and the lower surface of the main frame 9 abut when the screw shaft 76 is driven in reverse rotation of normal rotation and reverse rotation. Therefore, the collision sound is not generated. The main frame 9 includes a swing frame 52
And moves up and down following the vertical swing of the swing frame 70, and when the vehicle climbs a raised object on the ground, the cutting section 4 is attached to the swing frame 70.
Only one can lift away. In addition, the cutting section 4 is slid and adjusted as follows depending on the form of work.

(Rotary Cutting Operation) During normal rotary cutting in which the left side of the machine body 1 is uncut and the cutting operation is performed, the traverse mechanism C is driven to move the cutting unit 4 to the maximum as shown in FIG. Slide to the left,
The left end of the cutting width projects to the uncut land more than the left crawler traveling device 1. By doing so, the uncut mushroom culm closest to the machine 1 is moved to the left crawler traveling device 1.
The soil raised by the sinking of the left crawler traveling device 1 in the wetland work pushes the root of the uncut grass culm or the uncut grass culm that has fallen to the fuselage side is moved to the left crawler traveling device 1. Contact or stepping down can be avoided beforehand.

(Intermediate Splitting Operation) At the time of the intermediate splitting operation in which the cutting is performed while cutting the middle of the field, the traverse mechanism C is driven to move the cutting unit 4 to the right as far as possible as shown in FIG. The sliding displacement is performed so that the cutting width falls within the stepping width of the left and right crawler traveling device 1. By doing so, the pair of raising devices 10a,
At 10b, three grain culms can be cut, and the entire surface can be cut without stepping down by the left and right (particularly right) crawler traveling device 1.

[Another Embodiment] The centering member 59 may be a low friction member made of a metal for a sliding portion, a bush material, or the like.

[Brief description of the drawings]

FIG. 1 is an overall side view of a combine.

FIG. 2 is a plan view showing a horizontal sliding state of the reaper.

FIG. 3 is a side view showing a base of the reaper.

FIG. 4 is a cross-sectional view showing a base of a transmission system to a mowing unit.

FIG. 5 is a diagram of a transmission system to a reaper.

FIG. 6 is a plan view showing a front part of the reaper.

FIG. 7 is a vertical cross-sectional side view showing an auxiliary transport device in a power transmission system of the reaper.

FIG. 8 is a front view showing a part of the power transmission system of the reaper.

FIG. 9 is a longitudinal sectional side view showing the drive system of the right packer and the reaper.

FIG. 10 is a cross-sectional plan view showing a drive system of the reaper.

FIG. 11 is a perspective view showing a cover support structure of the right auxiliary transfer device.

FIG. 12 is a cross-sectional view showing a driven pulley support structure of the auxiliary transfer device.

FIG. 13 is a plan view of a driven pulley supporting portion of the auxiliary transfer device.

FIG. 14 is a front view showing the structure of the horizontal slide portion of the mowing unit.

FIG. 15 is a side view showing a structure of a horizontal slide portion of the mowing unit.

FIG. 16 is a bottom view showing the main part of the horizontal sliding portion structure of the mowing portion.

FIG. 17 is an exploded perspective view showing the structure of a lower limit adjusting mechanism.

[Explanation of symbols]

Reference Signs List 11 harvester 12a packer 13 auxiliary transport device 13a scraping transport belt 15 vertical transport device 36 outer shaft (first vertical transmission shaft) 40a drive pulley 49a driven pulley 59 centering member Fa support frame

Continuation of the front page (56) References JP-A-8-154453 (JP, A) JP-A 4-120430 (JP, U) JP-A 62-57610 (JP, U) JP-A 59-38737 (JP , U) Fully open sho 59-16293 (JP, U) Fully open sho 60-57934 (JP, U) Fully open sho 59-55427 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB) Name) A01D 57/00

Claims (1)

(57) [Claims] 1. A scraping rotator (12a) which acts on the root side of a cereal stem located near a mowing device (11) and forcibly transfers it to the start end of a vertical transport device (15). An auxiliary transport device (13) for locking and transferring the grain stalk from the front of the mowing device (11) toward the scraping rotary member (12a) above the rotary body (12a); ) To the drive shaft (3) of the scraping rotating body (12a).
6) and a driven wheel body (49a) disposed in front of the driven wheel body (40a) and an endless rotating band (1) with a projection.
3a) is a pre-cutting device for harvesting a combine, which is configured by winding the driven wheel (49a) on a sheet metal support frame (Fa) through which the drive shaft (36) is inserted. And fixing the support frame (Fa) to the fixing portion of the cutting portion (4).
And the drive shaft (36) is fixed to the drive shaft (3).
6) bevel gear case (34) located at the upper end.
And fix the centering member (59) to the drive shaft (36).
The centering member (59) is supported so as to be slidable.
The drive shaft (36) fixed to an upper surface of a frame (Fa).
To close the gap between the frame and the support frame (Fa)
And the combine are reaping the pre-processing unit.