JP3449787B2 - Combine grain culm conveyor - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for conveying grain culms of a combine harvester with multiple cuttings. 2. Description of the Related Art In a multi-shed combine of three or more lines, a vertical truss chain and a culm conveying system up to a vertical convey tine cannot be constituted as one, and a culm base conveying chain is separately provided on the left and right sides. And a tip carrying tine are arranged, and the left and right stem transport chains and the tip carrying tine are joined in a Y-shape at the lower ends of the vertical carrying chain and the vertical carrying tine. Here, the vertical transport chain and the vertical transport tine can be moved up and down with the handling depth adjustment mechanism at the front end with the rear end side as the fulcrum. The tip length supplied to the handling chamber by this handling depth adjustment operation Is kept constant. [0003] In the above-described apparatus for adjusting the handling depth, when the rear end of the tip tine and the lower end of the vertical tine reach the same height, they are wrapped. In this case, the tines interfere with each other and are broken, so that the rear end working area of the tip transfer tine and the lower end working area of the vertical transfer tine cannot be wrapped, resulting in poor inheritance performance and spillage of the culm. SUMMARY OF THE INVENTION It is an object of the present invention to provide a combine grain culm conveying device capable of successfully transferring the rear end of the tip tine and the lower end of the vertical tine. SUMMARY OF THE INVENTION Accordingly, the present invention is to arrange a culm base transfer chain and a head transfer tine on the left and right, and to vertically transfer the left and right culm base transfer chain and the head transfer tine. At the lower end of the tine, it has a Y-shape, and has a vertical transport chain and a handling depth adjustment mechanism that moves the lower end of the vertical tine up and down with this upper end as a fulcrum. In the set grain culm conveyance device, when the lower end of the vertical conveyance tine moves upward from the rear end of the ear conveyance tine by the handling depth adjustment operation, the extension range of the rear end of the front conveyance tine is extended.
It is characterized in that a long tine guide is provided to wrap the front end tine rear end operating range in the vertical conveying tine lower end operating range in plan view. [0006] Therefore, in the grain culm conveying apparatus of the combine of the present invention, the front end tine action range and the vertical end tine action range of the vertical transfer tine are wrapped in a plan view when the long culm is used. The succession performance of the rear end and the lower end of the vertical transfer tine is improved,
The occurrence of spilling of the culm at the inherited portion is eliminated, and the uniformity of the culm and the conveying posture are improved. An embodiment of the present invention will be described below in detail with reference to the drawings. FIG. 1 is an enlarged explanatory view of the working range of the rear end of the tip conveying tine,
FIG. 2 is an overall side view of the combine, and FIG. 3 is a plan view thereof. In the figure, (1) is a track frame on which a left-right traveling crawler (2) is mounted, and (3) is the track frame (1).
(4) a threshing unit having a feed chain (5) stretched on the left side and a handling drum (6) installed therein, (7) a harvesting unit equipped with a grain culm conveying device, (8) ) Is the straw processing section,
(9) a driver's cab provided with a driver's seat (10) and a driving operation unit (11); (12) a kernel tank for storing kernels from a threshing unit (4) via a fryer cylinder (13); ) Is a discharge auger for taking out the grains in the grain tank (12) out of the machine;
(15) is an engine that drives each part of the combine, and is configured to continuously perform harvesting and threshing work. As shown in FIGS. 4 to 8, the reaper (7)
Is a three-section raising case (18) having a raising tine (17) for raising an uncut grain culm which is taken in through a weeding board (16), and a star for scraping the culm base side of the raised grain culm. A foil (19) and a scraping belt (20), a cutting blade (21) for cutting the stem side at the time of scraping, and a diagonally left side of the stem side and the tip side of the grain stem of one right after cutting. Right culm transfer chain (22) and right ear tip transfer tine (23) to be transferred backward
And the left culm base transport chain (24) and the right where the culm side and spike side of the left two culms after cutting are merged near the feed end position of the right culm base transport chain (22) diagonally right and backward. The feed chain (5) has a head tip and a tip (25), and the stem side and the tip side of the three grain culms that join the feed end of the right stem feed chain (22) are inherited by the feed start end of the feed chain (5). A vertical transport chain (26) and a vertical transport tine (27), which are vertical transport devices for transporting, are used to transport the cut three grain culms to the right and left culm transport chains (24) (22) of the cutting unit (7).
And Y formed by the right and left tip tine (25) and (23), the vertical transfer chain (26) and the vertical tine (27).
It is configured to be conveyed to a feed chain (5) via a character-shaped cereal culm conveyance path to perform threshing. From the front side of the threshing unit (4), a cutting connection pipe (which extends obliquely downward and forward) through a space between a traveling mission (28) fixed to the front end of the machine stand (3) and a left traveling crawler (2). 29). An input gear case (30) is fixed to the upper end (running body side) of the cutting connection pipe (29), and a vertical rotation fulcrum pipe (7) of the cutting section (7) is provided from the lower left and right side surfaces of the input gear case (30). 31 and 32 are fixedly protruding in the lateral direction of the machine body on the same axis. The left and right vertical fulcrum pipes (31) and (32) are rotatably supported by left and right receiving stands (33) and (34) which are erected and fixed at the front end of the machine base (3). A hydraulic cylinder (35) for cutting and raising and lowering is installed between the stands (3). A bevel gear case (36) is fixed to the lower end of the cutting connection pipe (29).
A bearing pipe (37) is integrally formed on the surface facing the mounting surface of the cutting connection pipe (29) of 6) in the lateral direction of the machine body. The cutting blade (21) and the right star wheel (1)
9) and scraping belt (20) and left culm base transfer chain (2
4) and left ear tip tine (25) and raising case (1)
8) The left transmission case (38) for transmitting power to the left end is connected to the left end, and the right starwheel (19) and the scraping belt (20), the right culm base transfer chain (22) and the right ear tip transfer tine (23) are connected. ) Is provided with a slide pipe (40) for connecting a right transmission case (39) for transmitting power to the right end. The slide pipe (40) is connected to the bearing pipe (3).
7), the lower end of the cutting connection pipe (29) is slidably and rotatably supported in the lateral direction of the machine body at the lower end, and a hydraulic cylinder for cutting sliding (between the bearing pipe (37) and the right transmission case (39)). 41). There are provided four cutting frames (42) extending in the longitudinal direction of the machine in parallel, and the rear ends of the respective cutting frames (42) are integrally connected by a horizontal connecting pipe (43) to form a horizontal connecting pipe (43). The left and right ends are integrally connected to the outer ends of the left and right transmission cases (38) and (39) via a connection frame (44). ) (32) as a fulcrum for raising and lowering the mowing part (7), and the mowing part (7) in the lateral direction of the machine body by the expansion and contraction operation of the hydraulic cylinder (41) for mowing slide.
Is configured to slide. A lower portion of each raising case (18) is supported by a support pipe (45) integrally connected to the front end of the cutting frame (42). A horizontal transmission pipe (47) is integrally extended from the upper end of the driven transmission pipe (46) standing and fixed to the left transmission case (38) to the right side of the fuselage.
7) The right end side is supported by the rightmost mowing frame (42) via a connecting pipe (not shown), and each raising case (1) is supported.
The upper part of 8) is supported by a chain case (48) provided on the horizontal transmission pipe (47). A cutting upper connecting pipe (49) having one end fixed to the input gear case (30) and the other end fixed to an intermediate portion of the cutting connecting pipe (29) is provided on the left side of the operation section (11). The cutting side panel (50) installed along the edge in the front-rear direction of the fuselage is connected to the cutting upper connecting pipe (4
9) A vertical cutting upper rear support which is fixed to the upper surface side, has a lower end pivotally supported on the front side of the cutting upper connecting pipe (49), and has an upper end pivotally supported at an intermediate portion of the cutting side panel (50). A shaft (51) is provided, and a vertical cutting upper front support shaft (53) is provided in the middle of the horizontal transmission pipe (47) via a bracket (52). A rotating frame (54) extending between the front and rear support shafts (53) and (51);
4) A vertical rear bearing pipe (55) fixed to the rear end is rotatably fitted and supported outside the rear support shaft (51).
A vertical front bearing pipe (56) fixed to the front end of the rotating frame (54) is rotatably fitted to and supported by the outside of the front support shaft (53), and the cutting unit (7) is connected to the cutting upper connecting pipe (49). ) And the rotating frame (54), the rotation of the cutting unit (7) about the slide pipe (40) as a fulcrum is restricted by the cutting upper connecting pipe (49) and the rotating frame (54), The rotation frame (54) is configured to rotate in the horizontal direction following the slide of the mowing part (7). As shown in FIGS. 5 and 6, and FIGS. 9, 11 and 12, the horizontal support shaft (5
7) protrudes from the left side and is fixed, and a vertical support shaft (58) which is a left and right rotation fulcrum of the vertical transport device perpendicular to the horizontal support shaft (57).
And a vertical transport output case (59) integrally extending from the lower surface. A bevel gear case (60) is provided on the lower left side of the input gear case (30) at the upper end of the cutting connection pipe (29).
Are integrally formed, and a left and right turning fulcrum pipe (31) of the mowing part (7) is fixedly mounted on the left side surface of the bevel gear case (60), and the vertical support shaft (58) of the vertical conveyance output case (59) is connected. A rotatable bearing portion (61) is integrally formed on the upper surface of the bevel gear case (60) in the radial direction of the vertically rotating fulcrum pipes (31) and (32) of the mowing portion (7), and the vertical transport output case ( 59), on the left side of the input gear case (30), in parallel with the left and right rotation fulcrum pipe (31), and the horizontal support shaft (57).
The horizontal support shaft (57) is rotatably supported around the vertical support shaft (58) by the vertical support shaft (58) of the vertical transport output case (59). The upper ends of the vertical transport chain (26) and the vertical transport tine (27) are driven by sprockets (62) and (63).
And a vertical transport drive case (65) that is supported via a sprocket shaft (64).
Is rotatably supported on the horizontal support shaft (57) of the vertical transport output case (59), and the vertical transport chain (26) and the vertical transport tine (27) are integrated with the mowing unit (7) when it is raised and lowered. The vertically rotating fulcrum pipes (31) and (32) of the reaping unit (7) are raised and lowered to the fulcrum, and the vertical transport chain (26) and the vertical transport tine (27) are moved via the following mechanism (A) to the reaping unit ( 7)
Can be rotated left and right about the vertical support shaft (58) as a fulcrum following the left and right slide, and can be independently rotated vertically using the horizontal support shaft (57) as a fulcrum via the handling depth adjustment mechanism (B). Make up. As shown in FIGS. 9, 10 and 11, the follower mechanism (A) includes a cutting connection pipe (2) on the non-operating side of the vertical transport chain (26) from the front side of the vertical transport output case (57).
The frame (66) extends to the left side of 9), a support plate (67) integrally fixed to the front end of the frame (66) is provided with a driven fulcrum shaft (68), and a right culm base transport chain (22).
A driving-side fulcrum shaft (71) is provided on the right side of the lower bearing plate (70) of the rear end-side guide roller (69), and a non-acting-side driven fulcrum shaft (71) is provided at the lower end of the vertical transport chain (26). 68) and the driving end fulcrum shaft (71) on the lower surface of the non-working side at the rear end side of the right culm base transfer chain (22) by a connecting arm (72), and following the left and right slide of the cutting unit (7). The vertical transport chain (26) and the vertical transport tine (27) are connected to the vertical support shaft (58).
Is rotated left and right with the fulcrum as a fulcrum so that the relative position between the rear ends of the left and right stem transport chains (24) and (22) of the slide-type mowing part (7) and the lower end of the vertical transport chain (26) is always kept constant. It is composed. The connecting arm (72) has a boss (73) integrally fixed at the rear end rotatably fitted on the driven-side fulcrum shaft (68), and has a screw (74) integrally formed at the front end driven by a main part. The lower end of the side fulcrum shaft (71) is inserted into a ring portion (75) that rotates about this axis, and the axial movement is regulated by a bolt (76), and the fulcrum shaft is rotated between the fulcrum shafts (68) and (71). Stretch freely,
The angle change of the connecting arm (72) absorbs a change in the front-rear distance of the driven-side fulcrum shaft (72) with respect to the driven-side fulcrum shaft (71), which occurs due to the rotation following the linear movement. As shown in FIGS. 9 and 12, the handling depth adjusting mechanism (B) is configured on a base (77) integrally fixed to the upper surface of the frame (66) of the following mechanism (A). One end of the U-shaped pipe (78) is integrally fixed to the vertical transfer drive case (65), and the other end of the U-shaped pipe (78) is connected to the vertical transfer chain (2).
6) and a vertical transfer tine (27), and a handling depth adjusting motor (80) is fixedly mounted on a front end side upper surface of the base (77) via a motor bracket (79).
The tip of the screw shaft (81), which is the rotation shaft of (0), is mounted on the base (7).
7) The bearing is rotatably supported on a bearing bracket (82) fixed to the upper surface on the rear end side, and the screw shaft (81) is connected to the horizontal support shaft (5).
7) is stretched in a direction substantially perpendicular to the plan view, and the screw shaft (8
A push-pull arm (84) for rotatably connecting one end to a nut body (83) screwed into 1) is provided, and the push-pull arm (8) is provided.
The other end of 4) is rotatably connected to the U-shaped pipe (78), and the nut body (83) is moved back and forth on the screw shaft (81) by rotation of the screw shaft (81), so that the push-pull arm (84) and the U-shaped pipe (78), the vertical transport drive case (65) is rotated about the horizontal support shaft (57) of the vertical transport output case (59) as a fulcrum, and the vertical transport chain (22) and The lower side of the upper transfer tine (23) is connected to the left and right culm base transfer chains (24) and (22) and the left and right culm base transfer tine (25).
(23) It is configured so as to be raised and lowered with respect to the rear end side and to adjust the handling depth for keeping the tip length supplied to the handling room of the threshing unit (4) substantially constant. A switch arm (85) extends from the nut body (83), and a lower limit switch (86) and an upper limit switch for adjusting the handling depth via a switch bracket (88) fixedly mounted on a base (77). The limit switch (87) is disposed opposite to the switch arm (85), and the lower end of the vertical transport chain (26) is located at the lower end of the left and right culm transport chain (24) (2).
2) From the lowermost position where the height is almost the same as the height of the rear end, the lower end of the vertical transport chain (26) has the left and right spike transport tines (25).
(23) The vertical transport chain (26) and the vertical transport tine (27) in a range exceeding the rear end height to the highest position where the vertical transport chain (26) and the vertical transport tine (27) are in a substantially horizontal posture. ) Is configured to be moved up and down by restricting the handling depth adjustment range by the limit switches (86) and (87). As shown in FIGS. 2, 12 and 13, a tip guide plate (90) mounted on the upper surface of the case (89) of the vertical tine (27) is connected to the U-shaped pipe (78), and the case (89) A lower guide plate (92) is attached between the chain guide (91) of the vertical transport chain (26) and the vertical transport tine (27) and the vertical transport chain (26) are supported by the U-shaped pipe (78). A tine guide (93) extending on the working side of the transfer tine (27) and a holding rod (94) for pressing the working side of the vertical transfer chain (26) are supported at the tip of the U-shaped pipe (78). As shown in FIGS. 12 and 13, on the front side of the tip guide plate (90), a tip switch (95) and a stock switch (96), which are culm length sensors, are provided. Switch (95) (96) is connected to U-shaped pipe (7
8) is fixed in parallel in the stem length direction via a bracket (97), and the switch arms (95a) and (96a) of the switches (95) and (96) are swingably movable in the grain stem conveying direction. 90) A configuration in which each of the switches (95a) and (96a) is protruded substantially perpendicular to the surface, and each of the switches (95a) and (96a) is switched by the transported cereal stem through each of the switch arms (95a) and (96a) to detect the cereal stem length. And a culm length sensor (95) (9) on the lower surface side of the chain guide (91).
A culm detection switch (98), which is a grain culm sensor, is provided in front of the detection position of 6).
8) The switch arm (98a) is protruded at a substantially right angle to the working side of the vertical transport chain (26) so as to swing freely in the grain culm transport direction, and the switch (98) is switched by the transport culm via the switch arm (98a). , And the presence or absence of a grain culm is detected. Each of the switches (86) is connected to a controller (not shown) constituted by a microcomputer.
(87) (95) (96) and (98) are connected and the handling depth adjusting motor (80) is connected to the controller. When both the switches (95) and (96) are turned off (For short culm) or when the switches (95) and (96) are both turned on (for long culm)
The automatic depth control for driving the motor (80) to rotate forward or reverse so that the tip side switch (95) is turned off and the stock side switch (96) is turned on is performed. Adjust the limit switches (86) (87)
It is configured to perform automatically within the setting range of. still,
The automatic handling depth control is performed only when the culm detection switch (98) is turned on and the transported grain culm is detected, and the control is not performed when the switch (98) is off and not detected. As shown in FIG. 1, the left ear tip tine (2
5) A front-end transfer tine adjusting mechanism (99) for expanding the rear-end working range by the above-described handling depth adjusting operation, and raises each transfer tine (25a) of the left front-end transfer tine (25). An extension tine guide (101) for extending a rear end of the tine guide (100) to be held;
The extension tine guide (101) is slidably mounted between a working position (solid line position) and a non-working position (virtual line position) on the fulcrum shaft (102) as a fulcrum.
A spring (106) for urging the 1) to the non-operation position and a stopper (107) for bringing the extension tine guide (101) into contact with the non-operation position are provided. On the other hand, an eccentric arm (103), which is an operating arm of the extension tine guide (101), is provided in the handling depth adjusting mechanism (B), and the eccentric arm (10) is provided.
3) is disposed on the side of the screw shaft (81), one end is rotatably supported on the motor bracket (79) via the support shaft (104), and the other end is the length of the bearing bracket (82). The eccentric arm (10) is slidably fitted into the hole (105).
3) is mounted on the support shaft (104) at the side of the screw shaft (81) so as to be swingable. The extension tine guide (101) is connected to the eccentric arm (103) via a wire (108) to urge the eccentric arm (103) toward the screw shaft (81). A pin (109) extending from the nut body (83) is slidably brought into contact with the eccentric arm (103). When adjusting the handling depth (at the time of short culm) until the lower end of the vertical transport tine (27) passes the rear end height from the lowest position to the left and right tip transport tine (25) (27), the pin of the nut body (83) is used. (109) slides in front of the bent portion (103a) in the middle of the eccentric arm (103), and the eccentric arm (103b) in front of the bent portion (103a) is parallel to the screw shaft (81). The eccentric arm (103) swings in a state where the eccentric arm (103c) on the rear side of the bent portion (103a) is inclined in a direction approaching the screw shaft (81) (state of a virtual line), and the wire (108). , The extension tine guide (101) is held at the non-operation position by the spring (106) and the stopper (107), and the transport tine (25a) is lowered at the rear end side of the tine guide (100).
The rear end working range of the left ear tip tine (25) does not overlap with the lower end working area of the vertical feeding tine (27) in plan view, while the lower end of the vertical feeding tine (27) has left and right ear tine feeding tines (25). (23) When adjusting the handling depth from the height of the rear end to the highest position (at the time of a long culm), the pin (109) of the nut body (83) is bent at the middle of the eccentric arm (103). The eccentric arm (103a), which slides on the rear side of the bent portion (103a) and is located on the front side of the bent portion (103a), is inclined in a direction away from the screw shaft (81), and is bent.
03a), the eccentric arm (103) swings in a state (solid line state) where the eccentric arm (103c) behind the eccentric arm (103c) is parallel to the screw shaft (81), tensioning the wire (108), and extending the tine guide ( 101) is swung and held at the operating position against the spring (106), and the transport tine (25a) is held upright from the rear end of the tine guide (100) to the rear end of the extended tine guide (101), and the vertical transport tine is held. The lower end working range of (27) and the rear end working range of the left ear tip transfer tine (25) are wrapped in a plan view as shown by the hatched portion (110), and the left ear tip transfer tine (25) rear end at the time of long culm is It is configured so as to improve the transfer performance with the vertical transport tine (27). As is apparent from the above embodiments, the present invention provides a culm-conveying chain (22) (24) and a pier-conveying tine (23) (25) on the left and right sides. Original transfer chain (22) (24) and tip transfer tine (23)
(25) is transferred to the vertical transfer chain (26) and the vertical transfer tine (2).
At the lower end of 7), a handling depth adjusting mechanism (B) that merges in a Y-shape and moves the lower end of the vertical transport chain (26) and the vertical transport tine (27) up and down around this upper end as a fulcrum.
In the combine culm conveying device in which the movement trajectory of the tip transport tine (23) (25) and the vertical transport tine (27) are set apart, the vertical transport from the rear end of the tip transport tine (25) by the handling depth adjustment operation When the lower end of the tine (27) moves upward, the working area of the rear end of the tip tine (25) is extended.
An extended tine guide (101) for extending the length is provided so that the vertical transfer tine (27) wraps the front end tine (25) rear end operation range in a plan view at the lower end operation range. (25) Since the rear end working range and the vertical transfer tine (27) lower end working range are wrapped in a plan view, the inheritance performance of the rear end of the tip transfer tine (25) and the lower end of the vertical transfer tine (27) is improved, It is possible to eliminate the occurrence of spilling of the culm at the inherited portion, and to achieve remarkable effects such as the uniformity of the culm and the good transport posture.

[Brief description of the drawings] FIG. 1 is an enlarged explanatory view of a front end working range of a tip transport tine. FIG. 2 is an overall side view of the combine. FIG. 3 is an overall plan view of the combine. FIG. 4 is a side view of the reaper. FIG. 5 is a plan view of a reaper. FIG. 6 is an explanatory diagram of a reaping input unit. FIG. 7 is an explanatory view of a cutting slide unit. FIG. 8 is a plan view showing a holding structure of the mowing part. FIG. 9 is a side view of a handling depth adjusting mechanism. FIG. 10 is a plan view of the following mechanism. FIG. 11 is a plan view of a handling depth adjusting mechanism. FIG. 12 is a side view of the vertical transport device. FIG. 13 is an explanatory view showing a support structure of the vertical transport device. [Explanation of symbols] (22) (24) Tum base transfer chain (23) (25) Ear transport tine (26) Vertical transport chain (27) Vertical transport tine (99) Tip end tine rear end working range adjustment mechanism (B) Handling depth adjustment mechanism

Claims (1)

(57) [Claims] [Claim 1] Left and right culm base transfer chains (22) (24)
And the tip transfer tines (23) and (25) are arranged, and the left and right culm base transfer chains (22) and (24) and the tip transfer tines (23) and (25) are moved vertically by the vertical transfer chain (26) and the vertical transfer tines (27). ) At the lower end of the vertical transfer chain (26) and the vertical transfer tine (27) are provided with a handling depth adjusting mechanism (B) for vertically moving the lower end about this upper end as a fulcrum. In the combine culm conveying device in which the movement trajectory of the tine (23) (25) and the vertical conveying tine (27) are set apart, the vertical conveying tine (27) lower end from the rear end of the ear conveying tine (25) by the handling depth adjustment operation. When the is moved upward, an extension tine guide (101) for extending the rear end working range of the tip tine (25 ) is provided ,
An apparatus for transporting grain culms of a combine, characterized in that the vertical end of the tine (27) and the rear end of the front tine (25) are wrapped in a plan view.