JPH11243751A - Combine harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a combine harvester capable of readily carrying out an improvement in handleability such as operations to install and remove a reaping header by connecting a header input shaft to a feed input shaft on the side of a feeder house. SOLUTION: This combine harvester is obtained by connecting a header input shaft 58 provided in a reaping header 20 to a feed input shaft 45 on the side of the feeder house 21 in the combine harvester equipped with the reaping header 20 through the feeder house 21 at the front of a threshing part 4. At this time, a reel speed change case for transmitting a power to a reel for raking in unreaped culms is attached to a case bracket fixed onto the reaping header 20 and a high-speed clutch and a low-speed clutch for alternatively performing engaging and disengaging operations can further be installed in the interior of the reel speed change case to provide a high-speed or a low-speed output.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combine for threshing by feeding the whole amount of cereal stalks cut in a cutting section to a threshing section.

[0002]

Conventionally, a mowing header is mounted on a front side of a threshing unit via a feeder house so as to be able to move up and down, and a culm stalked by a reel is cut by a cutting blade and sent from the auger to the feeder house. There is a technique for performing a harvesting operation for feeding. However, in the prior art, since the drive connection between the feeder house and the mowing header is performed using a universal joint, there is a problem that simplification of the transmission structure, reduction in cost, reduction in weight, and the like cannot be easily achieved. Further, since the transmission of the uncut culm scraping reel is performed by the continuously variable transmission belt, there is a problem that the transmission structure cannot be easily simplified, downsized, and reduced in cost. Also, when the rake auger of the reaping header that feeds the reaping culm to the feeder house is driven by using an auger drive chain and a sprocket, a claw clutch type torque limiter that moves the input sprocket in the axial direction to turn on and off. When the torque limiter is actuated by the overload of the scraping auger, the auger drive chain is bent laterally and is damaged or cut.

[0003]

SUMMARY OF THE INVENTION The present invention provides a combine harvester in which a harvesting header is installed in front of a threshing unit via a feeder house, wherein a feed input shaft on the feeder house side is provided with a header input shaft provided on the harvesting header. Since the belt is connected and the belt is stretched between the feeder house and the reaping header to transmit power, the drive input structure of the reaping header can be simplified and lightened easily, and the belt is hung. By transmitting the driving force from the supply input shaft with different shaft cores to the header input shaft,
This makes it easy to improve the handleability such as the removal and attachment of the reaping header.

Further, a reel transmission case for transmitting power to an uncut culm raking reel is mounted on a case bracket which is fixed to a cutting header. And the securing of the support strength of the uncut culm squeezing reel using the reel transmission case can be easily performed.

Further, a high-speed clutch and a low-speed clutch, which are selectively engaged, are provided in a reel transmission case to output a high-speed or low-speed output. This eliminates the need for electrical components such as limit switches, and simplifies the speed change structure of the uncut culm scraping reel and reduces manufacturing costs.

In addition, the outer diameter of the input sprocket of the scraping auger for feeding the harvested grain culm of the harvesting header to the feeder house and the pitch diameter of the auger drive chain are made substantially the same. Since the auger drive chain rides over the bite and idles, it is possible to easily prevent breakage of the scraping auger etc. due to overload, and it is easy to simplify the structure and reduce the weight compared to the conventional torque limiter with a pawl clutch structure It is possible to eliminate the problem that the rotation locus of the auger drive chain shifts.

Further, a tension sprocket is provided which is displaced by an overload of a scraping auger for feeding the cutting grain culm of the cutting header to the feeder house, and the tension sprocket is displaced by an increase in driving load to drive the scraping auger. The auger drive chain can easily prevent the scraper auger from being damaged by overload, and can simplify and lighten the structure easily compared to the conventional torque limiter with a claw clutch structure. Can be eliminated.

Further, a cutting blade end is protruded outwardly from a side surface of the cutting header, and a crank arm which is pivotally supported on the outer surface of the cutting header and a cutting blade end are connected to each other through a cutout opening in the side of the cutting header. Thus, the number of components of the cutting blade drive mechanism can be easily reduced, and the cutting blade drive structure can be simplified and the manufacturing cost can be easily reduced.

[0009]

Embodiments of the present invention will be described below in detail with reference to the drawings. Fig. 1 is an overall side view of the combine, Fig. 2
Is a plan view of the same, in which (1) is a machine base equipped with a traveling crawler (2) on a track frame (3), and (4) is a large diameter and a small diameter 2 whose axes are orthogonal to the traveling direction of the body. A threshing section provided with two screw-shaped first and second handling cylinders (5) and (6) and an oscillating sorter (7), and (8) is a threshing section (4)
A grain tank for storing the grains of the threshing unit (4) which is arranged above the rear of the vessel and taken out through the fryer (9); (10) an upper discharge auger for taking out the grains in the grain tank (8); (1
1) is installed behind the grain tank (8) and the engine (1)
2) engine room inside, (13) driver's seat (1)
4) a driving operation unit provided with a steering handle (15) and the like in a driver's cab (16) and disposed above the front of the threshing unit (4);
(17) is a step for getting on and off the left and right workers arranged on both left and right sides of the cab (16), and (18) is a harvester which can be moved up and down via a hydraulic elevating cylinder (19) at the lower front of the threshing unit (4). Department.

[0010] The cutting section (18) includes a cutting header (20) for taking uncut kernels, and a header (2).
0) Connect the harvested culm to the threshing section (4) by connecting it to the approximate center of the rear part.
And an uncut culm scraping reel (22), a reciprocating drive type cutting blade (23), and a scraping auger (24) are attached to the cutting header (20). The feeder house (21) is provided below the driver's cab (16) and the driver's seat (14) in the center of the driver's cab (16).
The cut hulls taken in the header (20) are sent to the left side of the threshing unit (4) via a supply conveyor (25) provided in the feeder house (21). It is configured to perform threshing.

As shown in FIGS. 4 to 6, front and rear handling chambers (27) and (28) having a wider left and right width than the lower sorting chamber (26) are formed above the front of the threshing unit (4). Handling room (2
7) In (28), the large and small screw-type first and second handling cylinders (5) and (6) are advanced to substantially the right and left widths at the same axis center height, and the handling cylinder shafts (29) and (30) advance. The harvested culm from the feeder house (21) is fully introduced into the front handling chamber (27) from the left handling port (31) of the front handling chamber (27). The cereal stem is moved from the connection port (32) on the right side of the handling room (27) to the rear handling room (28), and the straw is discharged from the dust outlet (33) on the left side of the rear handling room (28). I have.

The first and second handling cylinders (5) and (6)
A rocking sorter (7) is provided below and a sorting conveyor (35) for feeding the sorting wind, and a first conveyor (35) for receiving the grain and sending it to the fryer (9). A second conveyor (37) for sending the second reduced product to the second reduction cylinder (36) is provided below the swinging sorter (7), and the grains of the first conveyor (35) are stored in the tank (8). Further, the reduced product of the second conveyor (37) is sent out to the upper surface of the swinging sorter (7), and each of the handling cylinder shafts (29) (3) of the first and second handling cylinders (5) and (6) is sent out.
0) is connected to the belt (38), and the counter shaft (4) is connected between the output shaft (39) of the engine (12) and the handle shaft (30).
0) is provided, the belts (41) and (42) are connected, and the first and second handling cylinders (5) and (6) are configured to rotate counterclockwise (the same direction) as viewed from the left side.

Further, the handle cylinder shaft (29) is connected to a belt (44) to a swing drive shaft (43) of the swing sorter (7), and a supply input shaft (4) of the supply conveyor (25).
5) connecting the handling cylinder shaft (29) to the belt (46);
The swing sorting machine (7) and the supply conveyor (25) are driven, and the handling cylinder shaft (30) is connected to the sorting input shaft (47) by a belt (48). 35) A sorting input shaft (47) is connected to a belt (49) to (37), and a sorting input shaft (4) is
7) is connected to the belt (50) to drive the Karino (34) and the first and second conveyors (35) and (37). Further, a traveling drive transmission case (51) for the traveling crawler (2) is provided below the rear end of the swinging sorter (7), and the traveling input shaft (52) of the transmission case (51) is connected to the output shaft. (39) to the belt (5
3) The output shaft (39) is connected to a belt (5) to a discharge auger (54) provided at the bottom of the grain tank (8).
5) It is configured to be connected so as to perform traveling drive and drive for discharging the grain in the grain tank (8). (56) is a tension-type threshing clutch, and (57) is a tension-type mowing clutch.

Further, the left end of the header input shaft (58) provided on the mowing header (20) is connected to the supply input shaft (45).
A belt (59) is connected to the right end, and a cutting blade (2) is connected to the right end of the header input shaft (58) via a crankshaft (60).
3), the middle of the header input shaft (58) is connected to the chain (62) to the left end of the raking shaft (61), and a claw clutch type high speed clutch (63) and a low speed clutch (6) are connected.
4) and the reel input shaft (6)
5) is connected to the unremoved culm pulling reel (2)
2) Reel shaft (66) to be mounted and reel input shaft (6)
An intermediate shaft (67) is provided between the chains (68) and (6).
9) The mowing part (18) is configured to be connected to drive the respective parts.

Further, as shown in FIGS. 7 and 8, input and output pulleys (70) and (71) for stretching the belts (46) and (59) are attached to both ends of the supply input shaft (45). Connect both ends of the input shaft (45) to the left and right
2) A rotatable shaft is supported by (72), and each of the elevating shafts (7
2) The (72) is rotatably supported by the left and right bearings (73) and (73), and the threshing side body (74) made of a thick steel plate and the reaping side body made of a thin iron plate. (75), the feeder house (21) in the form of a square tube is formed, the rear end of the threshing side body (74) is fixed to the elevating shaft (72), and the mowing side body is attached to the front end of the threshing side body (74). (7
5) The rear end is fixed, and the feeder house (21) formed by the main bodies (74) and (75) and the elevating shaft (72) are rotated about the axis of the input shaft (45).
The front mowing part (18) is configured to be moved up and down by an elevating cylinder (19).

Further, as shown in FIGS. 8, 9 and 10,
Left and right input sprockets (7) are connected to the supply input shaft (45).
6) While fixing (76), tension adjusting bolts (77) (7) are provided on both front sides of the feeder house (21).
7), a drum (79) is rotatably supported on the shaft (78), and a supply conveyor (2) is provided between the sprocket (76) and the drum (79).
5) A pair of left and right conveyor chains (80) and (80) are stretched, and a plurality of slats (81) forming the conveyor (25) are arranged at substantially equal intervals via the chains (80) and (80). Attach. Also, the slats (81) are formed by a lower plate (82) and an upper plate (83) made of an elastic rigid plate, and the thickness of the lower plate (82) is reduced to reduce the spring force. The thickness of the plate material (83) is increased to increase the spring force, and the respective plate materials (82) and (83) are overlapped up and down so that both ends are bolted to the cradle (84) of the chain (80).
Stop and fix, and slats (8
Lower plate (82) against overload while maintaining the rigidity of 1)
Is elastically deformed, and one end of the lower plate (82) is projected to the non-transport side of the chain (80).

The sprockets (76), (7)
6) An anti-winding drum (8)
6), a slat guide (88) is detachably fixed to the horizontal pipe (87) fixed to the side of the feeder house (21) and the drum (86), and the left and right conveyor chains (80) and (81) are fixed. The guide (88) is extended below the slat (81) on the non-transport side above the inside of the feeder house (21), and the downward deformation of the slat (81) is limited by the guide (88). ing.

As shown in FIGS. 8, 11 and 12, a square pipe type docking frame (89) having a length substantially equal to the vertical width of the feeder house (21) is provided on both sides of the front part of the feeder house (21). (89) and the left and right gate frames (92) between the square pipe-shaped upper and lower frames (90) and (91) of the mowing header (20).
(92) Fix the upper and lower ends, and feeder house (21)
The docking frame (89) is brought into contact with a docking guide (93) having a rearwardly expanding shape for guiding the left and right docking frames (89) and (89) between the left and right gate frames (92) and (92). ) And the stopper (9) for uniting and positioning the feeder house (21).
4) is integrally formed, and a docking guide (93) and a stopper (94) for abutting on the entire vertical width of the feeder house (21) are fixed to the gate frame (92). Guide (9
By the guide of 3) and the positioning of the stopper (94), the docking frame (89) at the front of the feeder house (21) is provided.
The right and left gate frames (9) of the mowing header (20)
2) Removably fit between (92) and upper hook (9)
The cutting header (20) and the feeder house (21) are configured to be separably connected by the engagement of 5) and the locking of the lower pin (96).

The left and right gate frames (92)
A pair of left and right intake guides (97) and (97) are provided on the front side of the stopper (94) between the (92) and the intake guide (97) is erected on the oblique front side of the gate frame (92). Left and right conveyor chains (80) and (80) and the front side of both right and left sides of the feeder house (21) where the both ends of the drum (79) are arranged are shielded by left and right intake guides (97) and (97), and the cutting header (20). Is taken into the center of the feeder house (21) by the guide of the take-in guide (97), and is fed to the conveyor chain (80) or the drum (7).
9) It is configured to prevent the cereal stems from entering and winding around the shaft supports on both sides.

As shown in FIGS. 9, 10 and 13,
The upper surface of the threshing-side main body (74) of the feeder house (21) is formed higher than the upper surface of the mowing-side main body (75), and the threshing-side main body is compared with the gap between the upper surface at the rear of the mowing-side main body (75) and the conveyor chain (80). (75) A large gap between the upper surface and the conveyor chain (80) is formed.
6) The distance between the lower surface of the front part and the upper surface of the feeder house (21) is enlarged, and the clogging of straw at the rear part of the feeder house (21) is prevented.

As is apparent from the above description, in the combine where the feeder house (21) for feeding the cut culm to the threshing unit (4) is provided, the upper surface of the threshing side main body (74) of the feeder house (21) is cut. (75) Even if the driver seat (14) or the like is provided above the feeder house (21) so as to protrude above the upper surface, a space for raising the feeder house (21) is secured, and the mounting height of the driver seat (14) or the like is secured. And the vertical width of the inside of the threshing side of the feeder house (21) is ensured, for example, to prevent the straw from being wound and clogged around the supply conveyor (25) drive unit inside the feeder house (21). The threshing side main body (74) and the reaping side main body (7)
5), the feeder house (21) is formed, and the rigidity of the threshing-side main body (74) is increased to secure the strength of the base of the feeder house (21).
1) While simplifying the drive structure of the base and preventing damage due to straw clogging, etc., the weight of the grain culm transfer section on the tip side of the feeder house (21) is reduced by forming the mowing side body (75) with lightweight material. The strength of the drive input base of the feeder house (21) is improved, and the weight of the feeder house (21) is reduced. Further, the slat (81) of the supply conveyor (25) in the feeder house (21) is formed of an elastic plate, and even if a foreign substance is caught, the slat (81) is temporarily deformed and the feeder house (21) or the slat (8) is deformed.
1) is prevented, and the upper plate material (8
3) and a structure for preventing damage while securing rigidity by a two-layer structure of a small lower plate (82), or the drum (79) of the supply conveyor (25) simply by extending the non-transport side of the slat (81). (86) and the like, so that the non-transporting side of the slat (81) can scrape the straw or the like.

The cutting blade (23) and the scraping auger (2)
4) A docking guide (93) is provided on the mowing header (20) on which the docking guide (93) is installed.
The stopper (94) is formed integrally with the feeder house (2).
1) The mowing side is united, and the docking guide (93)
And the stopper (94) are formed as one part to reduce the number of parts, to improve parts management or assembling workability, and to increase the strength of the docking guide (93) and the stopper (94) to each other so that the cutting header is obtained. While improving the rigidity of (20), the docking guide (93) is brought into contact with the entire vertical width of the feeder house (21), and the rigidity of the mowing header (20) is improved by attaching the docking guide (93). The strength of the connection between the mowing header (20) and the feeder house (21) is improved. Also, a supply conveyor (25) provided inside the feeder house (21) is provided with an intake guide (97) for blocking the front side on both sides, and a drum (7) for extending a slat (81) mounting chain (80).
9) Prevent the straw from wrapping around both ends, smoothen the intake of cereal stalks into the feeder house (21), eliminate the problem of clogging near the entrance, and near the slat (81) mounting chain (80) The amount of straw transported by the feed sprocket (76) is reduced by reducing the amount of straw that is transported, and the amount of grain transported by the supply conveyor (25) is maintained substantially uniform to improve threshing workability. 25) The configuration is such that fluctuations in required power are reduced to improve driving operability.

Further, as shown in FIGS. 14 to 19, the reel shaft (66) is provided at the front ends of a pair of left and right lift arms (98) and (98) so as to be adjustable in the front-rear direction. Attach uncut culm raking reel (22),
The middle part of the lift arm (98) and the cutting header (2)
0) A hydraulic reel lifting cylinder (99) is connected to the side, and both ends of the round pipe-shaped lift frame (100) are fixed to the left and right lift arms (98) and (98). Lift frame (10
0) is integrally fixed to the H shape.

The left and right lift arms (98)
(98) The left and right rotating arms (102) and (102) are rotatably connected to the rear end via lift fulcrum shafts (101) and (101).
2) Fix both ends of the round pipe-shaped rotating frame (103) to each arm (102) (102) and the frame (10).
3) is integrally fixed to an H-shape, and a left pivot arm (10) is attached to a support shaft (104) fixed to the left end of the upper frame (90).
2) The lower end is rotatably connected, and the lower end of the right rotating arm (102) is rotatably connected to the reel transmission case (105) fixed to the rear side of the right end of the reaper header (20). 104) A rotating arm (102) that can swing back and forth around the axis is erected on the rear side of the upper frame (90), and is rotated by the lift fulcrum shaft (101) positioned higher than the upper frame (90). The rear end of the lift arm (98) is connected to the upper end of the arm (102), and the cutting header (2)
0) Extend the lift arm (98) in the front-rear direction above.

A rotation fulcrum shaft (106) provided substantially on the same axis as the support shaft (104) is attached to the upper frame (90) via a bracket (107), and is attached to the rotation frame (103). Swing arm (10
8) Connect the middle to the pivot shaft (106),
An electric hydraulic unit (110) having a hydraulic oscillating cylinder (109) is mounted on the rear side of the mowing header (20),
The oscillating cylinder (109) of the unit (110) is connected to the lower end of the oscillating arm (108), and the oscillating arm (108) is rotated around the pivot (106) by the control of the oscillating cylinder (109). And rotate the frame (10
3) is moved in the front-rear direction to rotate the rotation arm (102) about the support shaft (104), and the lift fulcrum shaft (101) is rotated.
The lift arm (98) and the reel (22) are moved in the front-rear direction to adjust the position of the reel (22) in the front-rear direction with respect to the cutting blade (23). Also,
The fulcrum shaft (10) is controlled by the reel elevating cylinder (99).
1) The lift arm (98) is rotated around to adjust the height of the reel (22).

Further, as shown in FIGS. 5, 7, and 16,
Cutting header (2) for connecting feeder house (21)
0) Left and right bearing brackets (111) on the right side of the back
(112), and fix the brackets (111) (11).
2) disposing the header input shaft (58) via
A belt (59) for transmitting mowing power via the supply input shaft (45) is connected to the pulley (11) on the left end of the header input shaft (58).
3) and the header input shaft (58) from the right end of the bearing cylinder (114) fixed to the right bracket (112).
The right end protrudes, the crankshaft (60) is provided at the right end of the header input shaft (58), the crank rod (115) is attached, and the cutting blade (23) reciprocates through each shaft (60) and the rod (115). The cutting header (2) is located approximately in the middle between the left and right bearing brackets (111) and (112).
0) The front end of the support arm (116) is
7) Stop and fix the threshing part (4).
8) via a support shaft (119) to the support arm (11).
6) Connect the rear end rotatably and feeder house (2
1) and the support arm (116) are extended substantially in parallel both in a plan view and a side view, and a support shaft (119) is provided substantially on the axis of the supply input shaft (45) to provide the feeder house (21).
Reaping header (20) by means of and support arm (116)
Is connected to the front of the threshing unit (4) so as to be able to move up and down freely.

As is apparent from the above, the cutting header (2) is provided in front of the threshing unit (4) via the feeder house (21).
0) and mounting the uncut culm raking reel (22) to the mowing header (20) via the lift arm (98).
8) Connect the lift support shaft (101) of the base to the cutting header (2).
0) The reel (22) is disposed at a position higher than the upper surface.
The tilt angle of the lift arm (98) when the reel (22) is raised is kept small, the amount of forward movement when the reel (22) is lowered is kept small, and the longitudinal movement width of the reel (22) by raising and lowering is reduced. Let the culm scrape properly. Also, mount the base of the lift arm (98) to the mowing header (20).
The pivotable arm (102) is connected to the reel, and the reel (22) is moved back and forth by operating the pivotal arm (102) while maintaining the reel (22) at a substantially constant height. And a lift arm (100) for connecting and fixing the left and right lift arms (98) and (98) together to provide an integral fixation. The handleability is improved by miniaturization and the left and right swing of the lift arm (98) is prevented.
2) A rotating frame (103) for connecting and integrally fixing the (102) is provided to prevent the swinging of the rotating arm (102) from side to side and to improve the support strength of the lift arm (98). The left and right lift arms (98) and (98) fixed to the H shape via the (100) and the left and right rotation arms (102) and (102) fixed to the H shape via the rotation frame (103) are connected to the lift fulcrum. Shaft (10
1) to improve the support strength of the reel (22) and the scraping performance of the reel (22).

The threshing unit (4) and the cutting header (2)
A support frame (116) for connecting the feeder house (2) is provided substantially parallel to the side of the feeder house (21).
The cutting header (20) is supported by the cutting frame (1) and the support frame (116), and the feeder house (21) is arranged to be offset in the left-right width direction of the cutting header (20) according to the threshing input position. ) Simplification and weight reduction of the mowing header (20) structure by eliminating the need for reinforcing members to compensate for poor left-right balance
Improve front-to-back balance of the entire aircraft and cut header (2
It is configured to increase the cutting width of 0).

Further, as shown in FIGS. 17 to 19, the right column member (1) is formed between the right ends of the upper and lower frames (90) and (91).
20), the case bracket (121) provided on the right rear surface of the mowing header (20) is fixed to the upper frame (90) and the right pillar (120), and the reel bracket (105) is attached to the case bracket (121). Are fixed from behind by bolts (122). Further, the case (10) for supporting the scraping shaft (61) is supported.
5) The input bearing (123) of the case bracket (12)
1) A bolt (126) is fixed to the receiving stand (124) via a holding plate (125), and the reel input shaft (65) is connected to the output bearing portion (12) of the case (105).
7), and the upper frame (90) at the right end
8), the output bearing portion (127) is fixedly fastened with a bolt (130) via a holding plate (129), and the case (1) is fixed.
The right rotating arm (102) is rotatably supported by an output bearing (127) between the right side surface of the main body and the presser plate (129).

The high-speed chain (13) connected to the reel input shaft (65) by the high-speed clutch (63).
1) and a sprocket (132) (133), and a low-speed chain (134) and a sprocket (13) connected to the reel input shaft (65) by the low-speed clutch (64).
5) (136) is provided inside the reel transmission case (105) via the scraping shaft (61) and the reel input shaft (65), and the high speed clutch (63) and the low speed clutch (6) are provided.
4) is selectively driven by the operation of the speed change arm (137), and high-speed or low-speed driving force is input to the reel via the intermediate shaft (67) which is supported on the same axis as the right lift fulcrum shaft (101). The reel (22) is configured so as to be able to change its speed by transmitting it from the shaft (65) to the reel shaft (66). The right lift fulcrum shaft (101) is formed of a pipe, and the left end side of the intermediate shaft (67) is rotatably inserted into the hollow portion of the shaft (101) to support the shaft.

Further, as shown in FIGS. 5, 16, 17, and 20, the right end of the scraping shaft (61) and the right end of the support shaft (138) of the scraping auger (24) are connected to an auger drive chain. (139), the input sprocket (140), and the driving sprocket (141), and the outer diameter of the input sprocket (140) and the outer diameter of the input sprocket (140) sandwiched on both sides by a pair of chain guide plates (142) (142). The pitch diameter of the auger drive chain (139) is formed to be substantially the same size, and the drive load of the scraping auger (24) becomes larger than a predetermined value due to straw clogging or the like.
9) The input sprocket (140) is pushed up by the input sprocket (140) and the chain (139) jumps over the input sprocket (140).
Are idled, and when the driving load of the scraping auger (24) is equal to or less than a predetermined value, the auger (24) is rotated through the chain (139) to send the cut culms to the feeder house (21). doing.

A first sprocket (143) and a second sprocket (14), which are tension sprockets displaced by a change in the driving load of the scraping auger (24).
4), and a first sprocket (14) is attached to a tension arm (145) that rotates around the axis of the scraping shaft (61).
3) is attached, and the first sprocket (1) is attached to the arm (145) by the force of a tension spring (146).
43), the tension of the auger drive chain (139) is maintained, and a meshing spring (147) having a smaller spring force than the spring (146) is connected to the swing arm (148). 148), a second sprocket (144) is attached, and when the driving load of the scraping auger (24) becomes larger than a predetermined value, the tension of the chain (139) causes the second sprocket to resist the force of the spring (147). (144) is retracted and the first sprocket (14
By keeping the tension of the chain (139) by moving 3) backward, the length of the chain (139) wrapped around the input sprocket (140) is shortened, and the input sprocket (140) performs a biting action to run idle. It is configured to be.

As is clear from the above, the cutting header (2) is provided in front of the threshing unit (4) via the feeder house (21).
0), the harvester header (2) is attached to the feed input shaft (45) of the feeder house (21).
0) The header input shaft (58) provided in the belt (59)
Connect the feeder house (21) and the reaping header (2
Since the power is transmitted by stretching the belt (59) during the period 0), the drive input structure of the mowing header (20) is simplified and lightened, and the shaft core is laid by hanging the belt (59). The driving force is transmitted from the supply input shaft (45) having a different length to the header input shaft (58), and the cutting header (2) is transmitted.
0) Improve handleability such as desorption operation. Also, a reel transmission case (105) for transmitting power to the uncut culm raking reel (22) is attached to a case bracket (121) for fixing to the cutting header (20), and the mounting rigidity and cutting of the reel transmission case (105) are cut. Both the strength of the header (20) is improved by fixing the case bracket (121) to secure the strength of the uncut culm raking reel (22) using the reel transmission case (105), etc. A high-speed clutch (63) and a low-speed clutch (64), which are engaged in the clutch, are provided in the reel transmission case (105) to output at high speed or low speed. Eliminates the need for electrical components such as switches, and removes uncut culm scraping reels (2
It is configured to simplify 2) the shift structure and reduce the manufacturing cost.

Also, the scraping auger (2) which feeds the cut culm of the cutting header (20) to the feeder house (21).
4) The outer diameter of the input sprocket (140) and the pitch diameter of the auger drive chain (139) are formed to be substantially the same, and the input sprocket (14) is increased by increasing the driving load.
The auger drive chain (139) rides over the bite of (0), causing the auger drive chain (139) to run idle and preventing the scraper auger (24) from being damaged by overload. The weight is reduced and the rotation locus of the auger drive chain (139) is not shifted. Also, a first tension sprocket, which is displaced by an overload of a scraping auger (24) that feeds the cutting culm of the cutting header (20) to the feeder house (21).
And a second sprocket (143) (144) are provided, and the first and second sprockets (14
3) (144) is displaced to idle the rake auger (24) drive unit to prevent the rake auger (24) from being damaged by overload, and has a structure that is smaller than that of the conventional torque limiter having a pawl clutch structure. And the weight of the auger drive chain (139) is eliminated.

Further, as shown in FIGS. 16, 21 and 22, a cutting blade stand (149) is provided in front of the cutting header (20).
The cutting blade (23) is provided so as to be slidable back and forth through the cutout, and the right end of the cutting blade (23) is cut through the cutout opening (151) formed in the right plate (150) of the cutting header (20). (20) A side plate reinforcing frame (15) projecting outward on the right side and fixed to the outer surface of the right side plate (150).
2) A crank support shaft (155) is detachably attached to the support shaft (155) via a bearing plate (153) and a holding plate (154), and an intermediate portion of an L-shaped crank arm (156) is rotatably mounted on the support shaft (155). To support. In addition, the crank rod (11)
5) One end of the crank arm (156) is connected to the universal joint at the front end, and the roller (15) is connected to the other end of the crank arm (156).
7) is rotatably provided, and a hook plate (158) is fixed to the right end of the cutting blade (23).
The roller (157) is engaged with the hook (159) of 8). Then, the crank rod (115) is reciprocated back and forth by the rotation of the header input shaft (58),
Crank arm (15) around crank support shaft (155)
6) is swung, and the cutting blade (23) is reciprocally slid left and right to cut the culm base side of the grain stalk and mow.

As is clear from the above, the cutting blade (23) has an end protruding outside the side surface of the cutting header (20), and the cutting arm (156) and the crank arm (156) supported on the outer surface of the cutting header (20). Blade (23) ends with reaping header (20)
The cutting blade (23) is connected via the cutout opening (151) on the side surface to reduce the number of components of the cutting blade (23) drive mechanism, thereby simplifying the driving structure of the cutting blade (23) and reducing manufacturing costs. In addition, a chain (69) for driving the uncut culm scraping line (22) and a chain (13) for driving the scraping auger (24).
9), a crank rod (11) for driving a cutting blade (23)
5), etc., the cutting mechanism (18) drive mechanism is connected to the cutting header (2)
0) Since it is centrally arranged outside the right side surface, it is easy to simplify the maintenance work of the drive unit and improve the rigidity, etc., and the crank arm (20) is provided at the middle of the vertical width of the cutting header (20) on the right upper side of the cutting blade (23). 156) and the right end of the header input shaft (58) provided on the rear side of the mowing header (20) are connected by the crank rod (115). The crank rod (115) can be arranged at a high position outside the drive sprocket (141) with the header input shaft (5).
8) The drive section between the cutting blade (23) and the cutting blade (23) can be easily prevented from being wound around the drive section, and the drive input section on the right side of the scraping auger (24) can be protected by a high-rigidity component such as a crank rod (115). It is composed.

[0037]

As is apparent from the above embodiments, the present invention relates to a combiner in which a mowing header (20) is installed via a feeder house (21) in front of a threshing unit (4). Supply input shaft (45)
, The header input shaft (5
8) is connected to a belt (59), and the belt (5) is connected between the feeder house (21) and the cutting header (20).
9) is stretched to transmit the power, so that the drive input structure of the mowing header (20) can be simplified and lightened easily, and the shaft (59) has a different axis due to the belt (59). Since the driving force is transmitted from the supply input shaft (45) to the header input shaft (58), it is possible to easily improve the handleability such as the detachment operation of the cutting header (20).

A reel transmission case (105) for transmitting power to the uncut culm raking reel (22) is attached to a case bracket (121) for fixing the harvesting header (20). The mounting rigidity and the strength of the mowing header (20) can both be easily improved by fixing the case bracket (121), and the uncut culm scraping reel (22) using the reel transmission case (105) can be easily improved. The support strength can be easily ensured.

The high-speed clutch (63) and the low-speed clutch (64), which are selectively engaged, are provided in the reel speed change case (105) to output at high speed or low speed. As compared with the structure using the sword, electric components such as a speed change motor and a limit switch are not required, and the speed change structure of the uncut culm scraping reel (22) can be simplified and the manufacturing cost can be easily reduced. .

Further, a scraping auger (2) for feeding the cut culm of the cutting header (20) to the feeder house (21).
4) The outer diameter of the input sprocket (140) and the pitch diameter of the auger drive chain (139) are substantially the same, and the auger drive chain (139) gets over the bite of the input sprocket (140) due to an increase in drive load. Since the idler is idle, it is possible to easily prevent the scraper auger (24) from being damaged by an overload, and the structure and weight can be easily simplified as compared with the conventional torque limiter having the pawl clutch structure. In addition, it is possible to eliminate the problem that the rotation locus of the auger drive chain (139) is shifted.

Also, the scraping auger (2) for feeding the cut culm of the cutting header (20) to the feeder house (21).
The tension sprockets (143) and (144) which are displaced by the overload of 4) are provided, and the tension sprockets (143) and (144) are increased by increasing the driving load.
Is displaced and the drive unit of the scraping auger (24) runs idle, and it is easy to prevent the scraping auger (24) from being damaged by overload, and the structure is simplified as compared with the conventional torque limiter having the pawl clutch structure. And can be easily reduced in weight,
In addition, it is possible to eliminate the problem that the rotation locus of the auger drive chain (139) is shifted.

Further, a crank arm (156) and a cutting blade (2) are provided with an end of a cutting blade (23) projecting outwardly from a side surface of the cutting header (20) and supported on the outer surface of the cutting header (20).
3) Cut the edge of the mowing header (20) into the notch opening (1).
51), the number of components of the cutting blade (23) drive mechanism can be easily reduced, and the cutting blade (23) drive structure can be simplified and the manufacturing cost can be easily reduced. It can be aimed at.

[Brief description of the drawings]

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

FIG. 2 is a plan view of the same.

FIG. 3 is an explanatory front view of the same.

FIG. 4 is a plan view of a threshing unit.

FIG. 5 is an overall drive explanatory diagram.

FIG. 6 is an explanatory side view of the feeder house unit.

FIG. 7 is an explanatory plan view of the same part.

FIG. 8 is a plan view of the feeder house.

FIG. 9 is a side view of the same.

FIG. 10 is a partially enlarged side view of the same.

FIG. 11 is a partial plan view of a central part of a mowing header.

FIG. 12 is a partial side view of the same.

FIG. 13 is an explanatory view of elevating the mowing part.

FIG. 14 is an explanatory side view of an uncut culm scraping reel.

FIG. 15 is an enlarged plan view of the same.

FIG. 16 is an explanatory plan view of the right side of the mowing header.

FIG. 17 is an enlarged rear view of the reel transmission case.

FIG. 18 is an enlarged side view of the same part.

FIG. 19 is a rear view of a reel speed change case mounting portion.

FIG. 20 is a side view of a scraping auger driving unit.

FIG. 21 is a side view of the cutting blade drive unit.

FIG. 22 is a plan view of the same.

[Explanation of symbols]

(4) Threshing unit (20) Cutting header (21) Feeder house (22) Raised auger (23) Cutting blade (24) Raised auger (45) Supply input shaft (58) Header input shaft (59) Belt (63) ) High speed clutch (64) Low speed clutch (105) Reel transmission case (121) Case bracket (139) Auger drive chain (140) Input sprocket (143) First sprocket (tension sprocket) (144) Second sprocket (tension sprocket) (151) Notch opening (156) Crank arm

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Yuichi Shinfuku 1-32 Chayacho, Kita-ku, Osaka-Yanmar Agricultural Machinery Co., Ltd. (72) Inventor Koichi Kajihara 1-32 Chayacho, Kita-ku, Osaka-shi Yanmar Agricultural Machinery Co., Ltd.

Claims (6)

[Claims] Claims: 1. A combine harvester in which a cutting header is installed in front of a threshing unit via a feeder house, wherein a header input shaft provided on the cutting header is connected to a feed input shaft of the feeder house by a belt. . 2. The combine as claimed in claim 1, wherein a reel transmission case for transmitting power to the uncut culm scraping reel is attached to a case bracket fixed to the cutting header. 3. The combine according to claim 2, wherein a high-speed clutch and a low-speed clutch, which are selectively engaged, are provided inside the reel speed change case to output a high speed or a low speed. 4. A combine, wherein the outer diameter of the input sprocket of the scraping auger for feeding the cut culm of the cutting header to the feeder house and the pitch diameter of the auger drive chain are substantially the same. 5. A combine having a tension sprocket which is displaced by an overload of a scraping auger for feeding a cut culm of a cutting header to a feeder house. 6. A cutting arm end protruding outward from a side surface of the cutting header, and a crank arm that is pivotally supported on the outer surface of the cutting header and a cutting blade end are connected through a cutout opening in the side surface of the cutting header. A combine characterized in that: