JPH0724995Y2 - Combine - Google Patents

Description

[Detailed Description of the Invention] "Industrial application field" The present invention relates to a combine for threshing a grain culm cut by a mowing section in a threshing section.

[Prior Art] Conventionally, as shown in Japanese Utility Model Publication No. 1-27628 or Japanese Utility Model Publication No. 1-72032, power is transmitted from a mowing input shaft inserted into a mowing rotation fulcrum shaft to a mowing section by shaft conduction. It was

[Problems to be Solved by the Invention] Since the conventional technology requires a bevel gear to change the rotation direction, the number of power transmission parts from the cutting rotation fulcrum shaft portion to the cutting portion increases, and the weight and weight of the power transmission portion are increased. There was a problem that the bevel case became large. Further, when the mowing unit is configured to be movable left and right, by securing a mounting space for the bevel case for transmitting the mowing unit, the lateral movement stroke of the mowing unit is limited by the bevel case mounting,
Since the left and right width cannot be easily reduced by axial conduction, there is a problem that the transported grain culms are likely to interfere with the axial conduction section in a structure in which the reaping unit moves left and right and the grain culm transporting member swings left and right. It was

[Means for Solving the Problems] Therefore, the present invention provides a mowing unit which is movable vertically and horizontally with respect to a mowing rotation fulcrum shaft of a machine body, and the mowing rotation fulcrum shaft is a power transmission shaft to the mowing unit. In the combine configured in
A chain is used to transmit power between the mowing rotation fulcrum shaft and the mowing frame side drive part, and a mowing drive shaft for pivotally supporting the sprocket is slidably attached to the sprocket at the chain end on the mowing frame side. Is characterized by.

[Effect] Therefore, since power is transmitted from the mowing rotation fulcrum shaft side to the mowing frame side drive unit by chain conduction, simply installing a single sprocket on the mowing rotation fulcrum shaft side makes it approximately orthogonal to the mowing rotation fulcrum shaft. The power transmission direction can be changed to the direction of rotation, and compared to the conventional bevel gear structure, it is possible to reduce the number of power transmission parts from the cutting rotation fulcrum shaft to the cutting unit, and the chain conduction reduces the left and right width compared to the conventional method. In addition to being able to easily reduce the interference between the grain culm and the chain conducting portion in the structure for lateral movement of the reaping unit and horizontal swinging of the grain culvert transporting member, the connection structure of the reaping drive shaft and the chain provided on the side of the reaping frame that is freely movable left and right. Can be made simpler and more compact than before by installing a sprocket, and since the reaping drive shaft is extended in the lateral movement width of the reaping frame, the reaping frame and the reaping drive shaft reinforce each other. As a result, the rigidity can be easily improved, and the cutting power transmission portion can be made lighter and more compact and the cost can be easily reduced as compared with the conventional case.

[Example] Hereinafter, an example of the present invention will be described in detail with reference to the drawings. First
The drawing is a plan view of the mowing unit, FIG. 2 is an overall side view of the combine, and FIG. 3 is the same plan view. In the drawing, (1) is a track frame equipped with a traveling crawler (2), ( 3) is a machine base that is fixedly supported on the track frame (1), (4) is a feed chain (5) that is stretched to the left, and a handling cylinder (6), a rocking sorter (7), a karako (8), etc. Threshing section with (9)
Is a mowing unit for two rows, which is provided with a cutting blade and a grain culm transport mechanism,
(10) is a straw cutter that faces the end of the straw chain (11) connected to the end of the feed chain (5), and (12)
Is an engine for driving each part of the combine, (13) is a paddy tank for storing grains taken out from the threshing part (4) by facing the fried cylinder (14), (15) is a driver's seat (16) and driving operation It is a driver's cab provided with a part (17), and the reaping part (9)
In the above, the grain culm is continuously cut and the cut grain culm is threshed by the threshing unit (4).

As shown in FIGS. 1 and 4, the reaping section (9) is a grain culm raising member having raising tines (19) for raising uncut grain culms to be taken in through the sward plate (18). The raising case (20), the left and right star wheels (21) and the left and right sweeping belts (22) for scratching the culm side and the tip side of the raised culm, and the culm side is cut during the scraping. A cutting blade (23) which is a mowing member, the foil (21) and a belt (22)
Vertical transfer chain (24) and upper part which are grain culm carriers that convey and inherit the culm side and the tip side of the two-row cut grain culm that joins the scraping side of the feed chain to the feed start end of the feed chain (5). A cross section which is a cutting transmission chain case, which is provided with a tip transporting tine (25), and which is erected and fixed to the front end of the machine base (3) via a cutting rotation fulcrum shaft (27) (28). While supporting the base end of the rectangular cutting connection pipe (29), a cutting lifting cylinder (30) is provided between the connection pipe (29) and the track frame (1) to expand and contract the cylinder (30). The operation is configured to raise and lower the reaper (9).

In addition, the mowing frame (3
1), the grass plate (18) is attached to the tip of the mowing frame (31), and the cutting blade (23) is attached via the receiving plate (32). 3
3) Left and right rear reaping cases (35), which are transmission gear cases for vertically raising and fixing the pipes (34) to the rear of both sides, are integrally connected via brackets (36) and supported on the tip side of the swaying shake (31). A raking drive for supporting the lower side of the raising case (20) that supports the lower side via a pipe (37) and supporting the upper side of the raising case (20) by the raising pipe (34) and supporting the base end in the middle of the left raising pipe (34). The left star wheel (21) and the left scraping belt (22) on the drive side are attached to the tip of the case (38), and the tip of the scraping support frame (39) for supporting the base end in the middle of the right raising pipe (34). Driven Right Star Wheel (21)
And the right sweeping belt (22) are respectively supported, and the receiving cylinder (41) and the guide frame (42) having a U-shaped cross section are horizontally fixed to the tip of the connecting pipe (29), which are integrally connected in parallel. Connecting the proximal horizontal frame (33) to the connecting pipe (2
9) Horizontally slidably supported to the left and right via the guide frame (42) at the tip, and reciprocally moved to the left and right by being forwardly and reversely rotated by the electric motor (43) by being inserted and supported by the receiving cylinder (41). The reaping case (35) is rotatably supported at both ends of the mowing section lateral feed shaft (44), which is a feeding member, by the left and right reciprocating movement of the lateral feed shaft (44) that also functions as a support for the mowing frame (31). Slide the reaping frame (31) left and right, and arrange the reaper (9) approximately in front of the center between the left and right traveling crawlers (2) and (2) to perform middle-splitting work, and the left traveling crawler (2). The reaping unit (9) is arranged on the outer side of the machine to perform the ridge cutting work.

Further, the reaping input shaft (45) inserted into the left fulcrum shaft (27) and the tip of the connecting pipe (29) are horizontally and slidably mounted on the tip of the connecting pipe (29) so that the reaping input case can be slid from both ends. (3
5) A reaping drive shaft (46) having a hexagonal cross section for distributing and transmitting power to each part of the reaper (9) via a sprocket (45) (46) in the connecting pipe (29). 47) (4
8) The reaper drive chain (49) stretched over the sprocket (4) connects the reaper drive force transmitted to the reaper input shaft (45) on the threshing machine side through the reaper input pulley (50).
7) (48) and the chain (49) are configured to conduct the inside of the connecting pipe (29) and transmit it to the cutting section (9).

As is clear from the above, the cutting support fulcrum shaft (27) of the machine body
A combiner comprising a reaper (9) movably up and down and left and right with respect to (28), and the reaping rotation fulcrum shafts (27) (28) serving as a power transmission shaft to the reaper (9). The chain (49) transmits power between the mowing rotation fulcrum shafts (27) (28) and the mowing frame (31) side driving unit, and the sprocket (4) at the end of the chain (49) on the mowing frame (31) side.
8) The sprocket (48) is supported by a mowing drive shaft (46) slidably attached to the sprocket (48). Power is transmitted to the drive unit on the frame (31) side, and the mowing rotation fulcrum shaft (27)
A single sprocket (47) is provided on the (28) side to change the power transmission direction to a direction substantially orthogonal to the cutting rotation fulcrum shafts (27) and (28), and the cutting frame (31) is movable left and right. Side drive shaft (46) and the chain (49)
Are connected by a sprocket (48), and the cutting drive shaft (46) is extended in the lateral movement width of the cutting frame (31).

As shown in FIG. 5 and FIG. 7, the reaping rotation fulcrum shafts (27) and (28) formed separately on the left and right sides have the reaping input shaft (45) and the reaper on the left rotation fulcrum shaft (27). Input pulley (5
0) and the safety clutch (51) provided between the input shaft (45) and the pulley (50) are assembled, while the cutting input support shaft (52) is inserted into the right rotation support shaft (28). At the same time, a handling depth fulcrum case (56) for supporting the feed end side of the vertical transport chain (24) and the upper tip transport tine (25) via these drive sprockets (53) (54) and the same drive shaft (55). ) Is provided, the fulcrum case (56) is rotatably supported on the left end of the left fulcrum shaft (28), and the drive shaft (55) is attached to the input shaft (52) by a pair of bevel gears (57). ) (58)
The cutting rotation fulcrum shafts (27) and (28) are divided into blocks and divided into a cutting drive input portion and a grain culm transporting drive supporting portion.

Then, the flanges (59) (60) at the ends of the rotary fulcrum shafts (27) (28) are opposed to and joined to both sides of the base end of the connecting pipe (24), and the respective flanges (59) (60) are joined. The spacers (61) and the bolts (62) are integrally connected to each other, and the base ends of the connecting pipes (29) are sandwiched therebetween, and the rotation fulcrum shafts (27) and (28) are fastened and fixed on the same axis from both sides. At the same time, the rotary fulcrum shafts (27) and (28) are slidably connected in the tensioning direction of the chain (49) through the tension adjusting slots (63) and (64) of the cutting drive chain (49). Tighten and fix both ends of the pipe (29). The output side sprocket () of the chain (49) is formed by the output side end of the reaping input shaft (45) and the input side end of the reaping input support shaft (52) which are projected to the inside of the base end of the connecting pipe (29). 47) is rotatably supported by the sprocket (47)
The reaping input shaft (45), the reaping input shaft (52), and the chain (49) are interlocked by. Further, the base end opening of the connecting pipe (29) is opened and closed via a cover plate (65). The chain (49) and the sprocket (4) are
7) Assembly and the synthetic resin raw chain guide plates (66) (6) (6) (6) (6) that also serve to prevent noise from being stretched above and below the chain (49)
The insertion and tensioning of 7) is performed from the base end opening of the connecting pipe (29) which is opened via the cover plate (65), and the leaf spring-like chain tension (6) is arranged on the loose side of the chain (49).
8) is provided, and one end of the chain tension (68) is attached to a pin (70) fixed to the inner surface side of the lid plate (65) via a pair of left and right brackets (69) (69), and the chain tension (68) is attached. ) Is disposed on the side where the chain guide plate (67) is arranged, and the center portion of the chain guide plate (67) is cut from the end portion on the base end side of the connecting pipe (29) by a predetermined width and a predetermined length to prevent the lateral displacement prevention groove (71) of the chain tension (68). ) Is formed,
The chain plate (68) is configured to be attached / detached via the lateral displacement prevention groove (71) by attaching / detaching the lid plate (65).

In the figure, (72) is a connecting pipe (29) and this pipe (2
A rubber pad which is interposed between the rotary fulcrum shafts (27) and (28) and the cover plate (65) to be joined to 9) so as to properly and closely join them, and to prevent misalignment and seal.
Reference numeral (73) is a guide roller of the chain (49) which is rotatably supported on the inner middle portion of the connecting pipe (29) via a shaft (74).

As shown in FIG. 8 and FIG. 9, the spectacle-shaped left and right bearing bodies (75) (76), which are positioning members, are integrally fixed to both ends of the connecting pipe (29), and the upper side of each bearing body (75) is fixed. Both ends of the boss (76) of the sprocket (48) on the input side of the chain (49) are rotatably supported by bearings (77) in the opening, and the drive shaft (46) is provided in a hexagonal inner hole of the boss (76). Is slidably supported right and left so that only rotation is transmitted to the drive shaft (46) without exerting a tensile force in the radial direction by the chain (48), and the bearing body (75) Between the boss (76) and the boss (76) and the drive shaft (4
The seal members (78) and (79) between 6) are configured so that they can be used as those having independent functions (rotation / slide).

Further, in the lower opening of the bearing member (75), the receiving cylinder (4
1) is press-fitted and fixed, the positional relationship between the receiving cylinder (41) and the drive shaft (46) is determined by the bearing member (75), and the parallelism therebetween is maintained.

Further, an integrally fixed fixing flange (80) is provided at the left end of the receiving tube (41), and a screw-in type detachable flange (81) is provided at the right end, and a bracket (82) is provided on the front side from the fixing flange (80). ) Is integrally fixed and protruded, the left end of the guide frame (42) is integrally fixed to the bracket (82), and the bracket (82) is integrally bent at the tip of the connecting pipe (29) to be bent into an L shape. The cover plate (83) and the bracket (84) integrally fixed in the middle of the guide frame (42) are integrally connected via a bolt (85), and the receiving cylinder (41) and the detachable flange (81) are further connected. Bolts from above and below at the joints of (86)
A pair of upper and lower tightening metal fittings (87) to prevent loosening
And a bracket (88) integrally fixed to the upper fitting (87) and a bracket (89) integrally fixed to the right end of the guide frame (42) are integrally connected via a bolt (90), The guide frame (42) is integrally connected in parallel to the outside of the tip of the connecting pipe (29) to the receiving tube (41) which is horizontally fixed to the tip of the connecting pipe (29). The frame (42) and the bearing member (75) allow the lateral feed shaft (44), the base end lateral frame (33) of the mowing frame (31), and the drive shaft (46) to be held in parallel and slid to the left and right. At the same time, all the load of the reaper (9) is directly received by the connecting pipe (29).

In the figure, (91) and (92) are left and right outermost brackets (8) that integrally connect the receiving tube (41) and the guide frame (42).
2) Adjust bolt (93) from (88) toward the outside of the machine.
The left and right sliding stoppers of the mowing frame (31) are fixed by protruding through the (94).

As shown in FIGS. 8 and 10, a metal or synthetic resin sleeve (96) forming a spiral thread groove (95) is provided on the inner peripheral surface, and the detachable flange (81) is removed. After inserting the sleeve (96) from the right end of the receiving cylinder (41) to this inner surface, the detachable flange (81) is screwed into the receiving cylinder (41) to form on the inner end surface of the fixing flange (80). The other mating surface (96a) formed on the left end surface of the sleeve (96) is pressed against the mating surface (80a) of the
6) is inserted and fixed between the flanges (80) and (81) on the inner surface of the receiving tube (41) to prevent the sleeve (96) from rotating with the transverse feed shaft (44) to be inserted on the inner surface. There is.

A plurality of steel balls (97), which are protrusions, are provided on the transverse feed shaft (44) along the leads of the screw groove (95), and the steel balls (97) are hemispherical recesses (98). Embedded in the wall thickness of the lateral feed shaft (44) and fixed in position.
4) Approximately half of the steel ball (97) projecting from the outer peripheral surface is fitted into the screw groove (95), and the lateral feed shaft (44) is normally and reversely rotated by the electric motor (43). It is configured to reciprocate (slide) left and right with respect to 41).

In the figure, (99) is each flange (80) (8
1) and the lateral feed shaft (41), and the sleeve (96) is hermetically inserted between the receiving tube (41) and the lateral feed shaft (41).

As shown in FIG. 11, a sprocket shaft (100) is integrally connected to the left end of the transverse feed shaft (41), and the sprocket shaft (100) is bearing (101) in the left reaping case (35).
And a lateral feed drive case (10) integrally supporting the motor shaft (102) and the sprocket shaft (100) of the electric motor (43) in the cutting case (35).
3) in the interlocking connection via the bevel gears (104) (105), and the left end of the drive shaft (46) is rotatably supported by the same left cutting case (35) through the bearing (106). , The left raising drive shaft (107) and the drive shaft (46) to be inserted into the left raising pipe (34), the cutting case (3
In 5), they are interlockingly connected via bevel gears (108) (109).

The left stopper (91) is the mowing frame (3
1) Move to the right end position at the left end of the mowing case (35)
It is abutted against and regulates its movement.

As shown in FIG. 12, the right end of the transverse feed shaft (41) is rotatably supported by the right cutting case (35) through a bearing (110), and the right end of the drive shaft (46) is the same. The reaping case (35) on the right side is rotatably supported via a bearing (111), and the right raising drive shaft (112) and the driving shaft (46) inserted into the right raising pipe (34) are reaped. The case (35) is interlockingly connected via bevel gears (113) (114).

In addition, the stopper (92) on the right side is the mowing frame (3
1) Move to the left end position at the right end of the mowing case (35)
The bracket (36) is abutted to regulate the movement.

As shown in FIGS. 13 and 14, the cutting case (35) on the left side.
An eccentric shaft (116) that rotatably supports the base end of the mowing crank rod (115) is provided on the raising drive shaft (107) that projects to the lower surface, and the left raising drive shaft (1
07) and the eccentric shaft (116) are inserted into and supported by the same cam body (117) in parallel and key-fitted, and at the same time, the shafts (107) (11)
6) The engaging groove (118) (119) is formed at the same height position on the outer circumference of the end, and the through hole (120) is formed between the shafts (107) and (116) so as to be orthogonal to this axial direction. (117), the engaging grooves (118) (119) of the shafts (107) (116) are exposed in the through hole (120), and the shaft is inserted into the through hole (120). The tapered surface (123) of the wedge shaft body (122), which is loosely tightened to the (117) via the nut (121), is engaged with the locking grooves (118) (119) of the shafts (107) (116). By combining, the shafts (107) (11) from the cam body (117)
6) is restricted from being pulled out, and the eccentric shaft (116) is rotated about the axis of the drive shaft (107) by raising it to the left, and the crank rod (11
5) is rocked back and forth to move back and forth left and right.

As shown in FIG. 12, the cutting crank rod (11
The tip of 5) is rotatably connected to one end of a left and right swing arm (125) that is swingably supported by a support plate (124) that is integrally connected to the right cutting case (35), and the left and right swings Arm (1
The cutting blade (23) is reciprocally slid from the right side to the left and right via the 25).

As shown in FIG. 15, the transverse feed shaft (44) and the crank rod (115) are used as a protection member for the reaping drive shaft (46), and the drive shaft (46) and the rotation fulcrum shaft (27) ( 28)
The transverse feed shaft (44) is arranged on the connecting pipe (29) on the tip side of the drive shaft (46) on or below the line (l) connecting the shaft cores of the Connect the rod (115) to the pipe (29) below the mowing drive shaft (46).
The rotation fulcrum shaft (27) is arranged on the lower surface side, and these shafts (41) (44) (115) are arranged in a triangular shape in a side view so that the drive shaft (46) is located at the upper apex position. When the cutting section (9) is moved up and down around the (28), the transverse feed shaft (44) and the crank rod (115) are provided between the drive shaft (46) and the ground.
Are configured to intervene.

As shown in FIG. 16, of the vertical transfer chain (24) and the upper tip transfer tine (25) in which the feed end portion is supported by the rotation fulcrum shaft (28) through the handling depth fulcrum case (56). At the feed start end side, the cutting frame (3
1) Right pull-up pipe (34) and scraping support frame (3)
9) to be held by the scraping support frame (3
9) A handle depth adjusting motor (128) supported by a bracket (127), and a lower end of the motor (128) is interlockingly connected to the motor (128) so that the upper end is raised to the right and the bearing body (129) is attached to the upper end of the pipe (34).
A vertical screw shaft (130) rotatably supported via a rod, a rod (132) integrally extending rearward from a nut body (131) screwed to the vertical screw shaft (130), and the rod (132). A sliding cylinder (134) provided with a vertically rotatable fulcrum bracket (133) slidably fitted and supported, and the vertical transfer chain (2) at the tip.
The front driven sprocket (135) of 4) is rotatably supported via the support shaft (136) to support the vertical rotation fulcrum bracket (13).
Vertical rotation arm (137) that rotatably supports the base end on 3)
Is provided in the handling depth adjusting mechanism (126), and the vertical screw shaft (130) is rotated forward and backward by the motor (128) to vertically move the rod (132) through the nut body (131). , The vertical transfer chain (24) together with the upper tip transfer tines (25), the grain culm transfer height on the feed start end side is adjusted around the rotation fulcrum shaft (28), and the mowing frame (31) When sliding left and right, the handling depth adjustment mechanism (126)
The vertical transport chain (24) is configured to move the feed start end side thereof to the left and right along with the upper tip transport tine (25).

The present embodiment is configured as described above, and the mowing unit (9) is located on the left side of the machine to perform normal mowing work so as not to step on the uncut culm by the left traveling crawler (2). During the splitting work, the mowing part (9) is moved to the right side of the machine to prevent the right running crawler (2) from stepping on the uncut culm, and during the ridge cutting work, the mowing part (9) is moved to the left side of the machine. It is moved to prevent the left running crawler (2) from riding on the ridge.

[Advantages of the Invention] As is apparent from the above embodiments, the present invention is provided with a mowing unit (9) movably up and down and to the left and right with respect to the mowing rotation fulcrum shafts (27) and (28). In a combine in which the dynamic fulcrum shafts (27) (28) are configured as power transmission shafts to the mowing unit (9), a chain is provided between the mowing rotation fulcrum shafts (27) (28) and the mowing frame (31) side driving unit. The power is transmitted by the (49), and the cutting drive shaft (46) for pivotally supporting the sprocket (48) is slidable with respect to the sprocket (48) at the end of the chain (49) on the cutting frame (31) side. With it installed,
Since power is transmitted from the cutting rotation fulcrum shaft (27) (28) side to the chain (49) side drive unit to the cutting frame (31) side drive unit, a single sprocket is provided on the cutting rotation fulcrum shaft (27) (28) side. (47)
The power transmission direction can be converted to a direction substantially orthogonal to the mowing rotation fulcrum shafts (27) and (28) simply by providing the reaping rotation fulcrum shafts (27) (28) compared to the conventional bevel gear structure. Power transmission parts to the mowing part (9) can be reduced, and the lateral width of the mowing part (9) can be laterally moved and the grain transfer member (24) can be oscillated horizontally by making the lateral width of the chain (49) smaller than before. It is possible to easily reduce the interference between the grain culm and the conduction part of the chain (49) at the same time, and the movable mowing frame (31)
The connection structure between the mowing drive shaft (46) and the chain (49) provided on the side can be made simpler and more compact than before by installing the sprocket (48), and the mowing drive shaft can be moved in the lateral movement width of the mowing frame (31). Since the (46) is extended, the mowing frame (31) and the mowing drive shaft (46) serve as reinforcing members for each other, and the rigidity can be easily improved, and the mowing power transmitting section is lighter and more compact than the conventional one. And cost reduction can be easily achieved.

[Brief description of drawings]

FIG. 1 is a plan view of the mowing section, FIG. 2 is an overall side view of the combine, FIG. 3 is a plan view of the combine, FIG. 4 is a side view of the mowing section, and FIG. 5 is a sectional plane view of the mowing input section. Fig. 6 is a front view of the same cross section, Fig. 7 is a side view of the same cross section, Fig. 8 is a cross sectional plan view of the right and left reaping moving section, Fig. 9 is a side view of the same, and Fig. 10 is a lateral feed shaft. Sectional view, Fig. 11 is a sectional plan view of the left mowing case,
FIG. 12 is a sectional plan view of the right mowing case, FIG. 13 is an explanatory view of mounting the mowing crank rod, FIG. 14 is a sectional view of the cam body, and FIG.
FIG. 15 is a side view of the mowing drive shaft portion, and FIG. 16 is a support view of the grain culm carrier. (9) …… Mowing section (27) (28) …… Mowing rotation fulcrum shaft (31) …… Mowing frame (46) …… Mowing drive shaft (48) …… Sprocket (49) …… Mowing drive chain

Claims (1)

[Scope of utility model registration request] 1. A mowing unit (9) is movably provided vertically and horizontally with respect to a mowing rotation fulcrum shaft (27) (28) of the machine body, and the mowing rotation fulcrum shaft (27) (28) is mowed. In a combine configured as a power transmission shaft to (9), a chain (49) transmits power between the mowing rotation fulcrum shafts (27) (28) and the mowing frame (31) side drive unit, and at the same time, the mowing frame ( 3
The cutting drive shaft (4) that pivotally supports the sprocket (48) with respect to the sprocket (48) at the end of the chain (49) on the 1) side.
6) A combine characterized by having slidably attached.