JP3313614B2 - 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 pre-processing device, and more particularly, to a combine harvester which can be moved laterally with respect to a body, and a vertical transport device which can swing up and down around a rear fulcrum. The vertical transport device follows the lateral movement of the reaping unit and swings left and right, and the stalk is engaged from the front of the reaping device toward the raking rotator above the raking rotator. The present invention relates to a technique for rationally arranging and configuring an auxiliary transport device or the like that performs a stationary transfer.

[0002]

2. Description of the Related Art Japanese Unexamined Patent Publication No.
No. 264,921 is known, and a vertical transport device (reference numeral 9) capable of swinging up and down at a rear horizontal support point.
Is erected in a circular arc extending over the rear of the transmission frame (reference numeral 17) and the rear portion of the auxiliary transport device (reference numeral 6) so that the reaping unit can swing left and right at a vertical fulcrum at the rear along with the lateral movement of the mowing unit. There is disclosed a structure in which a bracket (reference numeral 29) of a vertical transport device is fitted to a connecting rod (reference numeral 28).

[0003]

In the structure of the above publication,
The fixed support structure of the auxiliary transport device, the connection structure between the guide member and the auxiliary transport device, and the like are not disclosed, and the configuration of the portion is unknown. An object of the present invention is to provide a guide member,
Another object of the present invention is to rationally configure a pre-cutting device having a cutting portion that can move laterally, including a support structure for the auxiliary transport device.

[0004]

[Means for Solving the Problems]

[Configuration] A first aspect of the present invention for achieving the above object is to provide a vertical transport device that transports a grain stalk harvested by a mowing device to a start end of a feed chain so as to be vertically swingable about a horizontal axis at a rear portion thereof. A handling depth adjusting mechanism, a squeezing rotator that acts on the root side of the cereal stem located near the reaping device and forcibly transfers to the starting end of the vertical transport device, and an upper portion of the squeezing rotator An auxiliary transport device that locks and transfers the grain stem from the front of the mowing device toward the raking rotator, the auxiliary transport device being mounted on a drive shaft of the raking rotator, A harvesting pre-processing device for a combine, which is configured by winding an endless rotating band with a projection around a driven wheel body disposed in front thereof, wherein the cutting device, the raking rotator, the auxiliary transport device, The mowing part with The vertical transport device is configured to be able to swing left and right around a vertical axis at a rear portion thereof , and the upper end portion is a reaping portion.
Guide member connected to the upper fixed portion of the vehicle and the vertical transport device
The vertical portion of the vertical transport device is allowed to move up and down,
In addition, it engages in a state where the left and right swing movement is disabled, and
The drive wheel and the driven wheel in the auxiliary transport device are
To deploy a sheet metal cover member to cover,
Part is connected to a lower end of the guide member, and the cover member
A connecting member that raises the front of the unit and extends from the connecting stay for the device
In the middle of these front and rear connection support sites.
The cover member to the centering member loosely fitted to the drive shaft.
It is characterized by being connected and supported.

According to a second aspect of the present invention, in the first aspect, a lower end portion of the guide member made of a pipe material is externally inserted into a pin member standing and fixed to a rear portion of the cover member.
The cover member is connected to the lower end of the guide member by providing a pin that penetrates the pin member and the guide member.

According to the structure of the first aspect, the upper end of the guide member is raised and the lower end of the guide member is attached to the rear of the cover member of the auxiliary transport device. , And the front part of the cover member is raised to be attached to the connecting stay for the device, which corresponds to the fact that the cover member and the guide member form a loop-shaped frame including a cutting frame. In other words, the cover member and the guide member can be sufficiently supported by the mowing part by the integrated connection structure of these members without newly providing a dedicated strength member, and the support of the auxiliary transfer device and the vertical transfer device can be supported. Their original function of positioning guide is exerted as before.

According to the second aspect of the present invention, the cover member and the guide member are connected to each other by inserting a pin such as a split pin or a beta pin into the fitting portion. Assembling and dismounting can be performed relatively easily while showing the connected state.

[0008] As a result, in the combine according to the first or second aspect, the guide member and the auxiliary transfer device required for the harvester while adopting the lateral movement configuration and the handling depth adjustment configuration are required. With the support structure in which the guide member and the cover member are rationally arranged without deteriorating necessary functions and without providing a new member, it is possible to provide a pre-cutting treatment device. Was.

[0009] The combine according to the second aspect has an advantage that the cover member of the auxiliary transport device and the guide member for the vertical transport device can be connected and integrated while maintaining a state of easy assembling and detachment.

[0010]

FIG. 1 shows a side view of a self-removable combine harvester with two rows of cuts.
A mowing unit 4 is connected to the front of the body 2 having a horizontal axis fulcrum P so as to be able to swing vertically by a hydraulic cylinder 3, and a threshing device 5, a maneuvering unit 6, A grain hopper 7, an engine 8, and the like are mounted. As will be described in detail later, the mowing unit 4 is configured to be able to move laterally with respect to the machine body 2.

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. A pair of left and right packers 12a and 12b which rake the cutting culm into the middle of the cutting width and join together, and a pair of left and right cantilevered diagonally forward from the upper part of each packer. Are provided. And the vertical conveyance device 15 which conveys the harvested grain stem upward and backward and transfers it to the feed chain 14 of the threshing device 5 in a sideways posture is provided.
The cutting unit 4 that can be moved laterally constitutes a pre-cutting processing unit.

The vertical transport device 15 is composed of a stock-holding and transporting mechanism 15a acting on the grain culm stock side and a tip locking transporting mechanism 15b acting on the grain culm tip side. A known handling depth adjusting mechanism D capable of adjusting the handling depth by swinging up and down around the center is constituted.

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. 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 FIG. 3, FIG. 5, and FIG. 6, a cutting portion support base 18 erected at the front of the body 2 has a horizontal fulcrum P serving as a swinging fulcrum of the cutting portion. 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 slidable along the driving shaft 19, and the base boss 9a is capable of transmitting torque to the driving shaft 19 and being laterally slidable. 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.
The weeding frames 29a, 29b and 29c of the book are extended, and the right and left raising devices 10 are provided at the front portions of the left and right weeding frames 29a and 29c.
The lower portions of a and 10b are connected and supported, and the reaper 11 is mounted horizontally across the three weeding frames 29a, 29b and 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 the intermediate bevel gear case 34, a vertically-oriented transmission shaft 35, 36 is formed in a double transmission shaft between the lower and upper transmission cases 28.
Has been extended towards.

The inner vertical transmission shaft 35 is the intermediate transmission shaft 32
The lower end of the vertical transmission shaft 35 is inserted into a bevel gear case 37 provided at the right end of the transmission case 28 so that the lower end of the transmission case 28
The bevel gear is interlocked with the lateral transmission shaft 38 inserted through the shaft. Further, a cylindrical outer longitudinal transmission shaft 36 disposed on the outer side.
Similarly, a lower bevel gear is interlocked with the lower end of the intermediate transmission shaft 32 in a decelerated state, and a right packer 12a is attached to a lower portion thereof via a torque limiter 39. A scraping conveyance belt 13a is wound around.
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 the driven pulley 49a, 49b disposed diagonally forward of the conveyor belt 1 with a locking projection.
3a and 13b are wound. The driven pulleys 49a and 49b are supported by upper cover members Fa and Fb with respect to the auxiliary transport device 13.

The right cover member Fa has a rear portion connected to a guide member 52, which will be described later, and a front portion has a right end weeding frame 29.
The outer transmission, which is supported by being connected via a fixed stay (an example of a connecting member) 58 to an erecting supporting rod (an example of an erecting device connecting stay) 57 erected from a, and is a packer drive shaft. The shaft 36 is inserted vertically without contact.

A centering member 59 made of a synthetic resin such as nylon or polyamide resin is mounted on the upper surface of the cover member Fa with two bolts 59a so as to be slidable on the outer transmission shaft 36. Fa is positioned in the lateral direction by an outward transmission shaft 36 which is a rotating member (see also FIGS. 4 and 11). In addition, the presence of the centering member 59 makes it almost impossible for the gap between the outer transmission shaft 36 and the outer transmission shaft 36 to be reduced.
The foreign material is prevented from entering the inner portion of the drum portion 12d of the right packer 12a from between the positions.

A pipe frame 42 is erected from the left end of the transmission case 28 via a bevel gear case 41, and a horizontal transmission shaft 38 inserted through the transmission case 28 and a vertical transmission shaft 43 inserted through the pipe frame 42 are bevel gears. Are linked. In addition, the upper end of the pipe frame 42 and the upper part of the left raising device 10b are connected to the bevel gear case 44.
The vertical transmission shaft 43 inserted through the pipe frame 42 and the input shaft 31b of the raising device 10b are interlocked with the bevel gear.

The left cover member Fb is fixed to a support shaft 48 attached to the pipe frame 42 and a raising support rod (an example of a raising device connecting stay) 67 erected from the weeding frame 29c on the left end. Stay (example of connecting member) 60
(See FIG. 4), and the left packer 1
2b is rotatably supported on a support shaft 48. The left and right driven pulleys 49a and 49b are both configured to be adjustable in tension by the same structure, and will be described below.

As shown in FIGS. 12 and 13, the driven pulleys 49a and 49b are attached to the mounting bolt 6 via a collar 61.
3 and rotatably inserted into the mounting bolt 6.
The nut 3 and the nut 65 penetrate the circular hole 64a of the scraper member 64, the long holes 79 of the cover members Fa and Fb, the long holes 58a and 60a of the fixing stays 58 and 60, and the collar 61 to be integrally tightened. It is fixed.

The fixing stays 58, 60 and the cover members Fa,
Fb refers to those bolt insertion holes as driven pulleys 49a,
The driven pulley 49a can function as a tension ring as a long hole in the direction connecting the drive shaft 49b and the drive shaft 36, and the bolt insertion hole of the scraper member 64 is a circular hole 64a. Belt 1
Even if the tension operation of 3a is performed, the positional relationship between the scraper member 64 and the driven pulley 49a does not change.

As shown in FIG. 14, cover members Fa and F
A press-formed groove portion 66 is formed in the groove b which is raised upward with a width just enough for the scraper member 64 to enter, and serves as a stopper for the scraper member 64 against the tensioning operation described above. The tip portion of the scraper member 64 is bent and formed close to the pulley bottom on the rear side of the driven pulley 49a, so that the scraper function for preventing dust and foreign matter from adhering to the pulley bottom is always exerted well. .

The distal ends of the fixed stays 58 and 60 are bent upward to form tension support projections 68. As shown in FIG. 13, the nut 65 is loosened using the tool 69 such as a screwdriver and the like, and the nut 65, that is, the mounting bolt 63 is attached to the transport belt 13a using the tension fulcrum projection 68 as a fulcrum. To make it possible to forcibly move against the tension of the conveyor belt 13a.
Tension operation can be performed.

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 are interlocked 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 rotation case in which a common drive shaft 50 of the stock-holding and transporting mechanism 15a and the tip-locking and transporting mechanism 15b is mounted on the left end of the driving shaft 19 so as to be rotatable around a first horizontal axis P. 51, the vertical conveying device 15 is vertically swung by an electric drive mechanism (not shown) based on the detection result of the cereal culm length detection sensor, thereby maintaining a constant handling depth regardless of the culm length. Is performed.

Further, the vertical transport device 15 is pivotally supported so as to be able to swing left and right about a vertical second axis Y with respect to the rotating case 51, and is provided at the front of the vertical transport device 15. By loosely fitting the provided front and rear movable bracket 53 to a guide member 52 provided on the reaping unit 4 side, FIG.
As shown in (1), the vertical transport device 15 swings around the second fulcrum Y following the lateral movement of the reaper 4.

As shown in FIGS. 3 and 11, the guide member 5
2, a pipe member is formed in an arc shape with the first axis P as a center, the upper end portion is bolted to a bevel gear case (an example of an upper fixing portion of the cutting unit) 30, and the lower end portion is formed on the right side. It is connected to the cover member Fa of the auxiliary transport device 13. More specifically, a pin member 5 made of a bar is provided at the rear of the cover member Fa.
4, the cover member Fa and the guide member 52 are connected by inserting the lower end portion of the guide member 52 into the outside and inserting the split pin 55 into the pin member 54 and the guide member 52. I have.

Next, the support structure of the mowing part 4 will be described. As shown in FIGS. 3 and 14 to 17, a swing frame 70 pivotally supported by the body so as to be vertically swingable around a horizontal axis Q, and a hydraulic pressure for driving and swinging the swing frame 70. The cylinder 3 forms an elevating mechanism A for driving and lowering the mowing unit 4. The oscillating frame 70 has a left and right long pressing action portion 70a that contacts the main frame 9 from below,
The left and right arm portions 70b, 70b are composed of a gate-shaped bent pipe which is integrated with and fixedly integrated with a fulcrum pipe 70c.
The sliding contact reinforcing member 71 is attached to the lower surface of the area where the contact is made.

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 arms 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 of 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.

(Rotating Cutting Operation) In the normal turning cutting operation in which the left side of the machine body 1 is cut with the uncut ground, the transverse feed 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 transverse feed 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] A structure in which the guide member 52 and the cover member Fa are bolted together, or a roll pin or a beta pin is passed through the guide member 52 and the pin member 54 may be used.

[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 plan view showing a front part of the reaper.

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

FIG. 6 is a cross-sectional view showing a base of a transmission system to a mowing unit.

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 a 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 sectional view of a driven pulley supporting portion of the auxiliary transfer device.

FIG. 15 is a front view showing a horizontal sliding portion structure of the mowing portion.

FIG. 16 is a side view showing a structure of a horizontal slide portion of the mowing unit.

FIG. 17 is a bottom view showing the main part of the horizontal sliding portion structure of the mowing unit.

FIG. 18 is an exploded perspective view showing a structure of a lower limit adjusting mechanism.

[Explanation of symbols]

 Reference Signs List 4 reaping unit 11 reaping device 12a raking rotator 13 auxiliary transport device 13a endless rotating belt with projection 14 feed chain 15 vertical transport device 30 upper fixed portion 36 drive shaft 40a drive wheel 49a driven wheel 52 guide member 54 pin member 55 Pin 57 Connecting Stay for Raising Device 58 Connecting Member Fa Cover Member D Handling Depth Adjusting Mechanism P Horizontal Axis Y Vertical Axis

──────────────────────────────────────────────────続 き Continuation of the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) A01D 67/00 A01D 41/02 A01D 61/00

Claims (2)

(57) [Claims] 1. A handling depth adjusting mechanism comprising: a vertical conveying device that conveys a grain stalk cut by a cutting device to a feed chain start end, and is configured to be vertically swingable about a horizontal axis at a rear portion thereof; A raking rotator that acts on the root side of the cereal stem located near the reaping device and forcibly transfers it to the starting end of the vertical conveying device; An auxiliary transport device for locking and transferring the grain stem toward the rotating body, wherein the auxiliary transport device is provided with a drive wheel mounted on a drive shaft of the raking rotator, and a driven wheel disposed in front of the drive wheel. A cutting pre-processing device for a combine, which is configured by winding an endless rotating band with a projection, wherein a cutting unit including the cutting device, the raking rotator, and the auxiliary transport device is provided on a traveling machine body. With respect to the vertical transport device. Rear vertical axis by heart around configured to be left swinging movement, a guide member upper end portion is connected to the upper fixed part of the reaper
The front part of the vertical transport device is swung up and down by the vertical transport device.
Movement is allowed, but left and right swing movement is disabled.
And the drive wheel and the driven wheel in the auxiliary transfer device are lifted up.
In order to arrange a cover member made of sheet metal to cover from the side, a rear portion of the cover member is connected to a lower end portion of the guide member, and a front portion of the cover member is raised to extend from the device connecting stay.
The supporting member is connected to the connecting member , and a cover portion is provided at an intermediate portion between the front and rear connecting supporting portions.
The material is connected and supported to a centering member loosely fitted to the drive shaft.
A combine harvesting pretreatment device , characterized in that: 2. A lower end portion of the guide member formed of a pipe material is inserted into a pin member which is fixed to a rear portion of the cover member, and penetrates the pin member and the guide member. The combine harvesting pre-processing device according to claim 1, wherein the cover member is connected to a lower end portion of the guide member by providing a pin.