JPH074108B2 - Straw bundling device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a straw bundling device which is installed in a rear part of a combine so as to bind threshing-treated straw.

"Prior Art" Japanese Patent Laid-Open No. 56-78522 discloses a means for interlocking and connecting a handle depth adjusting device for a threshing supply grain culm and a straw stock source control guide frame that aligns the straw stock base with wires. It is in.

"Problems to be solved by the invention" However, in the case of the above means, when the working depth adjusting device is stored in the deep handling side such as at the end of work, the guide frame also moves to the tip side fully, so that the cutting process in the next process is performed. In the case of a long culm at the beginning, there was a defect that the movement adjustment of the guide frame to the stock root side could not be made in time and the straw stock root was bent by the guide frame or wrapped around the guide frame.

"Means for Solving the Problems" Therefore, the present invention includes an straw binding unit at the rear of a series of grain culm transporting paths including a cutting transport unit, a threshing transport unit, and a straw transport unit, and the binding unit. In the structure provided with a stock aligning plate that moves and adjusts according to the culm length of straw, a grain culm sensor for detecting the presence or absence of grain culm is provided at an appropriate position in the grain culm transport path, and the grain culm sensor is used. When the grain culm is not detected, the alignment plate is forcibly moved to the most original position.

[Operation] Therefore, according to the present invention, when the grain culm sensor does not detect grain culm at the end of work or the like, the aligning plate is automatically moved to the most original position to start cutting in the next step. Occasionally, even if the straw is conveyed to the binding part, the binding source of this straw does not interfere with the aligning plate and cause stagnant jams, bending and winding of the straw, and good binding work. Can be started, and then the alignment of the stockholders can be improved by moving the aligning plate to the optimum position.

[Example] Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

FIG. 1 is an explanatory plan view of a binding portion, FIG. 2 is an overall side view of a combine, and FIG. 3 is a plan view of the combine. ,
(3) is a machine stand that is supported on the track frame (1) via a rotation fulcrum shaft (4) and an elevating cylinder (5), and (6) is a handling cylinder () on which a feed chain (7) is stretched on the left side. 8) built-in threshing section, (9) a mowing section provided with a cutting blade (10) and a grain culm transport mechanism (11), (12) a straw cutting section provided behind the threshing section (6), 13) is a paddy tank for holding the grains taken out from the threshing section (6) through the fried cylinder (14), (15) is an engine for driving each part of the combine, (16) is a driver's seat (17) and It is a driver's cab provided with a driving operation unit (18), and is configured to continuously mow grain culms and thresh.

As shown in FIG. 4, the grain culm conveying mechanism (11) which is the reaping and conveying section of the reaping section (9) includes a vertical conveying chain (19),
The cutting grain culm whose culm is cut by the cutting blade (10) is formed by the chain (19) so as to be conveyed to the starting end of the feed chain (7) which is a threshing conveying section, and the handling depth adjusting fulcrum (20) is also formed. The vertical conveying chain (19) is supported so as to be swingable and displaceable around the center, and the end of the chain (19) is brought into contact with and separated from the starting end of the feed chain (7) to adjust the handling depth. The piston rod (22) of the hydraulic cylinder (21), which is a vertical conveyance adjusting mechanism for adjusting the handling depth, is connected to the vertical conveyance chain (19), and a limit switch (detects the end of forward and backward movement of the piston rod (22) ( twenty three)
Provide (24). A hydraulic pump (25) is connected to the hydraulic cylinder (21) via a 3-position 4-port electromagnetic hydraulic switching valve (28) having solenoids (26) (27).

Furthermore, a grain culm sensor (29) is provided near the chain (19) in the middle of the grain culm conveying path from the reaping section (9) to the threshing section (6).
In addition to the above, the neutralization and deep handling sensors (31) (32), which are handling depth sensors, are provided in the handling mouth (30) of the threshing unit (6), and based on these sensors (29) (31) (32) The hydraulic cylinder (21) is controlled to adjust the handling depth.

As shown in FIGS. 1 and 5 to 6, the straw binding unit (33a) having a binding machine (33) behind the threshing unit (6).
And a straw chain (34) which is a straw conveying section that selectively feeds straw to the binding machine (33) or the straw cutting section (12). (19)
The straw that has been inherited by the straw chain (34) is fed to the straw cutting unit (12) or the straw binding machine (33).

The binding machine (33) includes a clutch door (35) for stopping the movement of the straw at the binding position, a packer (36) for focusing and compressing the straw, and a needle (37) for winding a string around the straw bundle. And a binding mission case (38), and a transmission case (39) above the mission case (38).
A knotting device (41) having a discharge arm (40), etc.
Is supported, and after the binding is completed, the bound bundle is discharged to the outside of the machine by the discharge arm (40).

Further, the binding machine (33) has a rear portion to the binding frame (42),
Further, the front part is slidably supported by a guide frame (43) fixed to the binding frame (42) and is linked to the binding adjustment motor (44) via a gear transmission mechanism (45). ), The binding machine (33) is connected via a coupling member (47), and the binding machine (33) is moved left and right by the forward and reverse rotation drive of the motor (44).
The bundling machine (33) is configured to adjust the bundling position left and right.

Further, a stocker alignment plate (48) is provided on the left side of the binding frame (42), and a transport deck for guiding and holding straw from below is provided between the alignment plate (48) and the binding machine (33). 49) and auxiliary deck (50). The upper surface of the rotating roll (52) faces the center of the deck (49) through the opening (51), and when the roll (52) is rotated by the driving force of the motor (53), the roll (52) is rotated. The straw that comes into contact with the upper surface of the plant is moved in the direction of the aligning plate (48) so that its root comes into contact with the aligning plate (48). Furthermore, the auxiliary deck (50) is integrally connected to the horizontal feed case (54) for moving and adjusting the aligning plate (48) left and right, and the auxiliary frame (42) is attached to the rear portion of the horizontal feed case (54). And the guide frame (43) supports the front end of the L-shaped auxiliary deck (50), and the frame (42).
The hexagonal shaft (55) provided on the line connecting the (43) is formed in a three-point support structure for supporting the front part of the transverse feed case (54). Then, the transverse feed case (54) is connected to the aligning plate adjusting motor (56) through the rotary screw shaft (57),
The aligning plate (48) and the auxiliary deck (50) are configured to move right and left by forward and reverse driving of the motor (56).

The aligning plate (48) is horizontally swingably supported by the transverse feed case (54) through a rotation fulcrum shaft (58) and is rotatable by the case (54) and a hexagonal shaft (55). The fixed arm (61) of the fulcrum shaft (58) is connected to the swing link (59) of the case (54) fitted to the shaft via the rod (60), and the input of the straw cutting part (12) is performed. A pair of reduction gears (63) (6) on the cutter shaft (62a) of the high-speed cutter (62)
4) Cutter shaft (65a) of low speed cutter (65)
The tip end of a swing plate (69) for fixing the base end to the hexagonal shaft (55) is connected to the gear (64) via an eccentric shaft (66), a rod (67) and a connecting plate (68). , Gears (64)
When the rod (67) is rotated, the aligning plate (48) is reciprocally swung about the fulcrum shaft (58).

Reference numeral (70) is a binding and picking roll provided at the rear of the straw chain (34).

FIG. 7 shows a position control circuit for the vertical conveying chain (19) and the aligning plate (48), which is provided with a main switch (72) for applying a power source (71) and an opening switch for the grain stem sensor (29). (29a), the deep sensor (27) is connected to the main switch (72) through the close switch (31a) of the neutral sensor (31) and the limit switch (24), and the switch (29a) and the neutral sensor ( The shallow handle solenoid (26) is connected to the main switch (72) through the open switch (31b) of (31), the open switch (32a) of the deep sensor (32), and the limit switch (23).

In addition, the timers (73) (74), which output the solenoids (26) (27) for a certain time after the solenoids (26) (27) are turned on for a certain time, are arranged in parallel circuits with the solenoids (26) (27). Set up.

Further, the potentiometer type vertical transfer position sensor (75) for detecting the position of the vertical transfer chain (19) which is moved and adjusted by the hydraulic cylinder (21) and the position of the aligning plate (48) which is horizontally moved by the motor (56) are set. A potentiometer type alignment plate position sensor (76) for detection is provided, and a comparison circuit (77) for detecting and outputting the displacement difference is provided, and an operation controller (78) for adjusting the displacement difference is provided as the sensor. A position difference (positional deviation) larger than that set by the adjuster (78) occurred between the vertical transport chain (19) and the aligning plate (48) provided between the (76) and the comparison circuit (77). At this time, the comparison circuit (77) is provided so as to output a difference signal.

Further, a timer switch (73a) (74a) (74a) connected to the main switch (72) through the switch (29a) and turned on by an output signal of each timer (73) (74).
a) and a switch circuit (79) (80) connected to the comparison circuit (77), respectively, for operating the relay switches (81a) (82a) for operating the motor (56) in the forward and reverse directions. ) (82) to long culm and short culm limit (83)
The switch circuit (79) (80) is connected via (84), and when the difference signal is output from the comparison circuit (77) when the timer switch (73a) or (74a) is turned on, the motor (56) is provided so as to drive in the forward or reverse direction.

In addition, the timer (85) is connected to the main switch (72) via the close switch (29b) of the grain culm sensor (29), and the timer (85) is kept constant by turning on the close switch (29b). Timer switches (85a) (85b) which are turned on after a lapse of time are provided between the main switch (72) and each long culm side limit switch (83) and between the limit switch (24) connections, respectively, When the culm sensor (29) no longer detects grain culm, the vertical transport chain (19) is moved to the storage position on the deepest handling side (in the direction of arrow a in FIG. 4) for a certain period of time, and the aligning plate (48) is also moved. Is moved toward the longest culm side (direction of FIG. 1b) near the root of the stock.

Note that (86) is a series of grain culm composed of a grain culm transport mechanism (11) that is a reaping transport unit, a feed chain (7) that is a threshing transport unit, and a straw chain (34) that is a straw transport unit. This is a transport route, and the grain culm sensor (29) can be installed at an appropriate position in the transport route (86).

This embodiment is configured as described above, and when performing continuous mowing and threshing work, the mowing grain culm (A) whose culm is cut by the cutting blade (10) is fed by the vertical transport chain (19) to the feed chain ( 7) It is conveyed to the starting end, and when the main switch (72) is turned on, the cut culm supplied to the starting end of the feed chain (7) is transferred to the culm sensor (2).
9) and the culm length is detected by the sensors (31) (32), the solenoids (26) (27) are selectively excited to operate the switching valve (28) appropriately, and the hydraulic cylinder (21). ), The piston rod (22) is moved back and forth to swing and displace the chain (19), and the handling depth is automatically adjusted.
Further, at this time, after a certain period of time has passed since the solenoids (26) (27) have been excited (approximately the time width during which the grain culms are conveyed from the sensor (31) (32) positions to the aligning plate (48) positions) The motor (56) is driven in the forward and reverse directions according to the amount of movement of the transport chain (19), and the aligning plate (48) is adjusted to move left and right to adapt to the actual length of straw culm at this binding position. The stock aligning operation is performed by the aligned plates (48).

When the grain culm sensor (29) no longer detects grain culm, such as at the end of work, the aligning plate (48) moves toward the most root (direction of FIG. 1b) and starts cutting in the next step. This prevents interference between the straw and the alignment plate (48).

The vertical transport chain (19) and the aligning plate (48) may be mechanically linked to each other in the same manner as in the above embodiment, and the aligning plate (48) may be mechanically or It may be configured to be electrically linked. Further, when the vertical transport chain (19) or the handling depth adjusting lever is at the deepest handling position (the chain (19) is in the stored state), the aligning plate (48) may be moved to the most stock position.
Further, even when the stock positions are not aligned during manual handling, the stock aligning plate is located at the most stock position so that the straw does not bend due to interference with the stock plate.

Further, in the above-described embodiment, each sensor (29) (31) (32)
Although the configuration is shown in which it is provided in front of the threshing unit (6), it may be provided in the rear of the threshing unit (6).

"Effects of the Invention" As is apparent from the above-described embodiments, the present invention is directed to a series of grain culm transport paths (the culm transport route (11), the threshing transport unit (7), and the straw transport unit (34). In a structure in which a straw bundling part (33a) is provided at the rear of 86), and a stock gathering plate (48) that moves and adjusts according to the straw culm length is provided in the bundling part (33a), A grain culm sensor (29) for detecting the presence or absence of grain culm is provided at an appropriate position in the route (86), and the grain culm sensor (2
Since the aligning plate (48) is forcibly moved to the most original position when the grain culm is not detected by (9), the aligning plate (48) is always the most original ( Even if the straw is transported to the bundling part (33a) at the longest culm position, the stock of this straw interferes with the aligning plate (48), causing stagnant jams and bending the straw. Good bundling work can be started without winding or winding, and after that, by moving the aligning plate (48) to the optimum position, it is possible to improve the alignment of the stockholders, which is a remarkable effect.

[Brief description of drawings]

1 is a plan view of the binding unit, FIG. 2 is an overall side view of the combine, FIG. 3 is the same plan view, FIG. 4 is an explanatory view of a vertical transport unit, and FIG. 5 is a side view of the binding unit. FIG. 6 is a rear view of the same, and FIG. 7 is a control circuit diagram. (7) …… Threshing transport unit (11) …… Mowing transport unit (29) …… Grain culm sensor (33a) …… Straw bundling unit (34) …… Straw transport unit (48) …… Plate (86): Grain culm transport route

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yasuyoshi Kawato 1-32, Chayacho, Kita-ku, Osaka City, Osaka Prefecture Yanmar Agricultural Machinery Co., Ltd. (56) Reference JP-A-56-78522 (JP, A) 58-107709 (JP, U)

Claims (1)

[Claims] 1. A straw bunching unit is provided at the rear of a series of grain culm transporting paths composed of a mowing transport unit, a threshing transporting unit, and a straw transporting unit, and the straw bunching unit moves to the binding unit according to the culm length of straw. In the structure provided with a stock arranging plate to adjust, provided a grain culm sensor for detecting the presence or absence of grain culm at an appropriate position in the grain culm transport path,
A straw bundling device characterized in that the aligning plate is forcibly moved to the most original position when the grain culm is not detected by the grain culm sensor.