JPS62289111A - Automatic clutch apparatus of waste straw bundler - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] 3. Detailed Description of the Invention "Field of Industrial Application" The present invention relates to a waste straw binding machine installed at the rear of a combine harvester to bind waste straw that has been threshed. The drive input shaft of the straw tying machine is interlocked with the cutter shaft of the straw cutting section through the tying clutch. Conventional technology Conventionally, the drive source for the straw tying machine and the straw cutting section were separate.

``Problem to be solved by the invention'' Therefore, the tying machine is driven or can be driven even during the straw removal work, which is not only dangerous for the operation, but also causes the tying machine to be driven during the straw removal work. In this case, there were drawbacks such as the negative effects of noise caused by this working sound and increased power consumption.

"Means for Solving the Problems" Therefore, the present invention provides a culm sensor for detecting the culm being transferred in a series of culm conveying paths from the reaping conveyance section to the waste straw conveyance section, and the culm sensor Clutch disengagement means is provided for operating the clutch on and off in response to the culm detection and non-detection signals, and for disengaging the clutch regardless of the output signal of the culm sensor.

"Function" According to the present invention, during the tying operation, the driving force is transmitted to the tying machine based on the output signal of the culm sensor to drive the tying machine, and the clutch is disengaged by the clutch disengagement operation means. When the cutting operation is performed, the drive of the tying machine is stopped, so there is no influence of work noise from the tying machine, and power consumption can be reduced.Moreover, these switches are easy to operate and are safe. You can also excel.

"Example" An embodiment of the present invention will be described below in detail with reference to the drawings.

Figure 1 is an electrical circuit diagram of the binding section, Figure 82 is an overall side view of the combine harvester, and Figure 3 is a plan view of the same. ,
(3) Ik above 5. The machine base is supported by the Tsuku frame (1) via the rotation fulcrum shaft (4) and the lifting cylinder (5), and (6) has a built-in handle #4 (8) on which the feed chain (7) is stretched on the left side. The threshing part (9) is the cutting blade (10
) and a culm conveying mechanism (11), (12)
(13) is a straw cutting section provided at the rear of the threshing section (6);
) is a paddy tank that holds the grains taken out from the threshing section (6) via the grain lifting barrel (14), (15) is the engine that drives each part of the combine, and (16) is the driver's seat (17) and the driver's seat. It is a driver's cab equipped with an operation part (18), and is configured to continuously reap and thresh the husk.

As shown in FIGS. 4 and 5, the straw cutting section (12)
A straw bundling part (IS) is installed on the rear side, and the bundling part (19)
is equipped with a straw tying machine (20), and the tying part (1
9) Alternatively, a straw removal chain (21) that selectively feeds waste straw to the straw removal cutting section (12) is provided, and the waste straw transferred from the feed chain (7) to the straw removal chain (21) is provided. The structure is such that the straw is fed into the straw removal cutting section (12) or the straw removal binding section (19).

The binding machine (20) includes a clutch door (22) that stops the movement of waste straw at a binding position, a backer (23) that collects and compresses the waste straw, and a needle (24) that wraps a string around the waste straw bundle. A discharge arm (27) is provided above the mission case (25) via the transmission case (28a) (2Efb).
), etc., is supported, and after the binding is completed, the tied bundle is discharged outside the machine by a discharge arm (27).

As shown in FIGS. 6 and 7, the binding machine (20
) has a guide frame (3) whose rear part is fixed to the binding body frame (29) and whose front part is fixed to the binding body frame (29).
0) so as to be slidable left and right, and the binding position adjustment motor (31) is equipped with a reduction gear (3) which is a gear transmission mechanism.
2) The binding machine (20) is connected to the rotating screw shaft (34) interlockingly connected through (33) through the coupling member (35) and the bracket (38), and the motor (31) is driven in the forward and reverse directions. By moving the binding machine (20) left and right, the binding position of the binding machine (20) can be adjusted from side to side.

On the other hand, sandwiching the binding machine (20) in the center, there is a tip guide plate (37) on the right side, and a main deck book for guiding the culm center (37) on the left side.
8) in one body, and further to the left side of the main deck (38), an auxiliary deck book (3G) for stock head guidance and a stock head alignment plate (40) are provided in one body. The main deck (3
8) is a rotating roll (42) above the central opening (41).
) The upper surface is facing, and the motor (43) rotates the roller a7(4)'+ of the roll C42).
Nine rows of waste straw are moved toward the alignment plate (40), and the straw is provided so that the base of the straw is brought into contact with the alignment plate (40).

Further, the auxiliary deck (39) and the stock alignment plate (40) are supported by the horizontal feed case (44), and the case (44)
4) is connected to an alignment plate position adjustment motor (46) via a rotating screw shaft (45), and the auxiliary deck (39) and stock alignment plate (4) are moved by forward and reverse driving of the adjustment motor (46).
0) and are configured to be integrally adjusted by moving left and right.

Further, the alignment plate (40) is arranged in the horizontal feed case (44).
) is horizontally swingably supported via a rotation fulcrum shaft (47), and a cutter shaft (48a) of a high-speed cutter (48), which is the input shaft of the straw removal cutting section (12), is equipped with a pair of reduction gears. (
49) An eccentric shaft (50) is attached to the gear (50) of the cutter shaft (51a) of the low-speed cutter (51) connected via
2) and the fulcrum shaft (4) via the swing link mechanism (53).
7) are connected to move the alignment plate (40) back and forth around the fulcrum shaft (47) when the gear (50) rotates, thereby facilitating the alignment effect of the stock base.

By the way, the bundling input shaft (54) that inputs the driving force to the bundling machine (20) is connected to the V pulley (55) (5B), the V belt (57), and the tension boob (58) that constitutes the bundling input clutch (58a). ) is interlocked and connected to the high-speed force lid shaft (48a). The input shaft (54
) on the main body frame (29), the middle of the tension arm (60) of the tension pulley (58) is swingably supported via a fulcrum shaft (61). , an eccentric shaft (62) of a large-diameter reduction gear (33) fixed to the right end of the rotating screw shaft (34);
and the other end shaft (Ha) of the tension arm (60) are interconnected via a rod engagement fitting (64) that is fitted into the connecting rod (63) and the eccentric shaft (62) so as to freely rotate. It is set up like this. Then, the tension arm spring (65) which presses the tension boob 9 (58) against the bell (57) with return spring force is attached to the fulcrum shaft (61).
), and the rotation of the gear (33) causes the eccentric shaft (
When the rod (82) is in the retreat position, the rod (83) and the engagement fitting (64) are disengaged to be in a free state, and the tension pulley (57) is applied to the belt (57) by the force of the spring (135).
58) to put the clutch (58a) into the engaged state, the eccentric shaft (62) moves to the forward position due to the rotation of the gear (33), and the engagement fitting (64) moves to the rod (63).
When the other end of the tension arm (60) comes into contact with the fixed locking plate (66) of the spring (65) and pushes up the other end of the tension arm (60), the tension arm (57) is released from the clutch (58a). ) is turned off.

Note that (67) is a motor bracket for attaching the motor (31) to the binding body frame (29), and (68) is a binding roll provided at the rear of the straw removal chain (21).

As shown in FIG. 8, in the straw conveyance path (21a) formed by the straw removal chain (21), the chain (21)
A waste straw sensor (69) is provided which is a culm sensor that detects waste straw transferred by the sensor (69), and when the sensor (69) detects waste straw, the clutch (58a) is driven in the forward direction.
a clutch activation limit switch (70) that turns on and stops the driving of the motor (31);
8) a clutch disengagement limit switch (71) that is driven in reverse to disengage the clutch (58a) and stop the drive of the motor (31) when the discarded straw is no longer detected;
and a left-right position limit switch (72) that detects the end of left-right movement when adjusting the left-right position of the bundle 411 (20).
73) is provided in the binding part (19). The on/off limit switch (70) (?l) is connected to the screw shaft (3
4) is turned on and off by a switch operation cam (86) that is integrally fixed to the switch.

FIG. 1 shows the control circuit of the motor (31),
A selection switch (74) which is a clutch disconnection operation means to be switched when the waste straw transferred by the waste straw chain (21) is sent to the waste straw cutting part (12) or the waste straw binding part (19) for cutting or binding work. , key switch (75)
is connected to the power source (76) via the motor (
The closing contact (78a) of the forward rotation manual operation switch (78) for 1-position adjustment is connected to the operation relay (77) of the relay switch (77a) that drives the relay switch (77a) for forward rotation of The bundling side switching terminal ( of the selection switch (74) 74
When a) is chain-stitched and one song is discharged; the sensor (69) is in the ON state to scoop out and dry the crucible; that is, when the open switch (89a) is ON;
The screw shaft (34) is moved in the positive direction from the position where the cam (8th) operates the cut-off limit switch (71) to the position where the cut-off limit switch (70) is operated and the closing contact (70a) is turned off. Motor (31) to rotate approximately half a rotation
It is designed to drive in forward rotation. Note that the motor (
31), the binding machine (20) is rotated in the normal direction as shown in Fig. 8 (a).
) toward the stock side in the direction of the arrow, or when reversing, the binding machine (
20) to the tip side in the direction of the arrow (b) in the figure.

In addition, the operating relay (80) of the relay switch (80a) that drives the motor (31) in reverse is connected to the closing contact bar 8a) (79a), the closing switch (139b) of the straw discharging sensor (69), and the The open contact (70b) of the clutch engagement limit switch (70), the self-holding relay (81) of the contact (70b), and the delay timer switch (82)
) and the binding side switching terminal (?4a) of the selection switch (74) is connected via the closing contact (71a) of the clutch disconnection limit switch (71), and the opening relay switch (?4a) of the relay (81) is connected. 81a) is connected to the open contact (70b) to a differential circuit, and the straw removal sensor (69
) is in the OFF state of the sensor (69) when the switch (69a) no longer detects the culm is turned off, and the sensor (69) is turned on from the switch (69b) off, the timer is turned on from the switch (89b) turned on. After a certain period of time (approximately 1 second) set by the timer of the switch (82), the cam (86)
) operates the cut-off limit switch (71) from the position where the cut-off limit switch (70) is operated.
The motor (31) is provided so as to be driven in the reverse direction to rotate the screw shaft (34) approximately half a turn in the opposite direction to the position where 1a) is turned off.

Further, the contact point (78b) of the operation switch (78) for manually adjusting the position of the binding machine (20) to the left (toward the stock side) and the self-holding relay (78b) of the contact point (78b)
83) and the left position limiter, the relay (77) is connected to the switching terminal (
74a), and the relay switch (83a) and cut-off limit switch (71) of the relay (83).
) and the closing switch (89c) of the straw discharging sensor (69) are connected to the open contact (78b) in a parallel circuit, and the off-state 8 (lock switch () of the straw discharging sensor (69)
89α) is turned on) to stop normal rotation of the motor (31) by the operation switch (78).
Even after the open contact (78b) of 78) is turned off, the cam (86) operates the cut-off limit switch (71) and closes the close contact (71b).
) is provided to drive the motor (31) in normal rotation until it is turned off.

Furthermore, the open contact (72b) of the left position limit switch (72) and the self-holding relay (84) of the contact (72b) are connected to the open switch (89a) and the switching terminal (72b).
4a) connect the closing contacts (78a) and (79a) to the parallel circuit between them, and connect the relay switch (84a) of the relay (84) to the opening contact (?2b) to the parallel circuit;
The on state of the straw removal sensor (89) (open switch (89a)
the operation switch (78) of the motor (31)
During normal rotation drive, the left position limit switch (72) is operated and the close contact (72a) is turned off and the open contact (72b) is turned on, after which the cam (86) operates the input limit switch (70). The motor (31) is provided to rotate in the normal direction until the closing contact (70a) is turned off.

On the other hand, the opening contact (79b) of the operation switch (79), which manually moves the binding machine (20) to the right direction (toward the tip side), the self-holding relay (85) of the contact (79b), and The operating relay (80) is connected to the bundling side switching terminal (74a) via the right position limit switch (73).
), the relay switch (85a) of the relay (85) and the clutch disengagement limit switch (7
The closed contact (71c) of 1) and the normally closed contact (9cl) of the straw removal sensor (69) are connected to the contact (79b) in a parallel circuit.

Straw removal sensor (68) off state (close switch (89d)
When the motor (3) is turned on by the operation switch (79)
When stopping the reverse drive of 1), even after the open contact (79b) of the switch (78) is turned off, the cam (86) operates the cut-off limit switch (71), and this close contact (71c) is turned off.
) The motor (31) is provided to be driven in reverse until it is turned off.

In addition, the cutter side switching terminal (
74b) is directly connected to the cutting limit switch (71), and when the switch (74) is switched to the cutter side during binding work, the motor (31) is driven in reverse fh1.
．． 76G+9. t1/y; +14-(5Ra)fy
'a J-1-h-t-, 4-4A It is provided to stop driving the motor (31) when the closing contact (71a) of the ITI limit switch (71) is turned off.

Note that the relay (8) is connected between the closing switch (69b) and the closing contact (71a) of the cut-off limit switch (71).
1) is directly connected through the close relay switch (81b) t-, and when the straw removal sensor (69) detects the straw culm during the bundling operation, the motor (31) is driven in forward rotation, and the cam (86) is Operate the limit switch (70) and close the contact (70a).
), when the sensor (69) no longer detects the culm and the close switch (89b) is turned on, the motor (31) is immediately driven in reverse, and the cam (86) is activated to turn off the limit switch (71). ) to return the closing contact (71a) to its original state.

The nut flow side is configured as described above, and its operation will be explained below.

The bundling work is started by switching the selection switch (74) to the bundling side, and the manual operation switch (7B) (79) is used to turn the motor (3
By driving 1) in the forward and reverse directions, the left and right position of the binding machine (2o) is adjusted. As shown in FIG. 9, the straw removal sensor detects that the waste straw from the feed chain (7) has been taken over by the straw removal chain (21) and the waste straw has moved to the waste straw transport path (21a). (69) is detected, that is, the sensor (69) is in the on state (open switch (139)
When (a) is on), the motor (31) is driven in normal rotation and the large diameter reduction gear (
33), from the state shown by the phantom line in Figure 8, in which the cut-off limit switch (71) is turned off by the cam (86) (the contact (71a) is turned off), to the state shown by the solid line in the same figure. When the motor (31) is driven forward in a state where the duty limit switch (70) is turned off by the cam (88) (contact (70a) is turned off) as shown in FIG.
1) The drive stops. During rotation of the gear (33), the eccentric shaft (82) moves to the retreat position, and the engagement between the rod (63) and the engagement fitting (84) is released, and the tension pulley (58) is moved to the tension arm. Spring(
The binding clutch (58a) is brought into contact with the bell (57) by the return spring force of the binding machine (20), and the driving force from the cutter shaft (48a) is transmitted to the binding machine (20).

During such bundling work, the straw removal sensor (69) no longer detects the transfer of waste straw, that is, the sensor (63) is in an OFF state (
Switch (89a) off, switch (Hb) on)
When the timer switch (82) is turned on, the motor (
31) is reversely driven, and the cam (86) turns off the cut-off limit switch (71) (turns off the contact (71a)).
When this occurs, the drive of the motor (31) is stopped.During this drive, the gear (33) rotates in the opposite direction, and the binding clutch (58a) is forced to disengage as shown in the imaginary line in FIG. It is something.

In addition, as shown in Figure 10, the straw removal sensor (
69) detects the culm (switch (t(9a
), the motor (31) is driven to rotate in the normal direction, and before the cam (86) turns off the input limit switch (70) (turns off the contact (70a)), an error such as an erroneous operation occurs. The straw sensor (68) is in an off state in which the straw sensor (68) does not detect the culm (switch (Ha) is off, switch (89b)
When the switch is turned on), the motor (31) is immediately driven in reverse to return the cut-off limit switch (71) to its original state position where it is turned off (contact (71a) turned off) by the cam (86). It is.

Furthermore, as shown in Figure 11, the straw removal sensor (6
9) is in the on state (switch (e9a) is on), the motor (31) rotates forward, and the required limit switch (70)
The motor (
After the drive of the selection switch (74) is stopped, the selection switch (74) is stopped.
) is switched to the cutter side, the motor (31) is driven in reverse rotation, and when the cut-off limit switch (71) is turned off (contact (71a) turned off) by the cam (86), the motor (31) is driven to rotate in the opposite direction. This is a selection switch (74) that stops the operation.
When the is switched to the cutter side, the bundling manual clutch (
58a) is held in place.

FIG. 12 shows a configuration example in which the above embodiment is implemented using a control circuit (87) consisting of a small computer.
Switch the manual operation switch (78) (79) to change the left/right position FA of the binding machine (20) to the forward/reverse changeover switch (88).
Instead, the same switch configuration as described above is used except that the left and right position adjustment is performed by a single switch (88), and the same operation and effect as in the above embodiment is achieved. Identical components are given the same numbers and detailed explanation thereof will be omitted.

"Effects of the Invention" As is clear from the above embodiments, the present invention provides a method for connecting the drive input shaft (54) of the straw tying machine (20) to the tying input clutch (54).
8a) of the cutter shaft (48a) of the straw cutting section (12)
In the structure in which the shell culm sensor (69) detects the shell culm being transferred is provided in a series of shell culm conveyance paths from the reaping conveyance section to the waste straw conveyance section (21a), the shell culm sensor (69) The clutch (58a) is turned on and off using the culm detection and non-detection signals of the culm sensor ().
Since the device is equipped with a clutch disengagement means (74) that disengages the clutch (58a) regardless of the output signal of the tying machine (69), the tying machine (
20) can be stopped and maintained. As a result, there is a shadow of work noise from the binding machine (20) during cutting work! You can work safely without incurring any damage, and
It is possible to reduce wasteful consumption of power, reduce power consumption, and change the working mode quickly and easily by operating a switch, which brings about remarkable effects.

[Brief explanation of the drawing]

Fig. 1 is an electric circuit diagram of the bundling section, Fig. 2 is an overall side view of the combine, Fig. 3 is a plan view of the same, Fig. 4 is a rear view of the straw bundling section, Fig. 5 is a plan view of the combine, Figure 6 is a side view of the binding input clutch section, Figure 7 is an explanatory plan view of the same, Figure 8 is an explanatory diagram of the operation of the binding unit, Figures 9 to 11 are timing charts, and Figure 12 is another modification. It is an explanatory diagram showing an example. (12)... Straw cutting section (20)... Straw tying machine (2)
1a)... Straw conveyance section (48a)... Cutter
Axis (54)... Drive input shaft

Claims (1)

[Claims] In a structure in which the drive input shaft of the waste straw tying machine is interlocked and connected to the cutter shaft of the waste straw cutting section via a binding input clutch, the culm being transferred to a series of culm transport paths from the reaping conveyance section to the waste straw conveyance section. A clutch disengagement device is provided with a shell culm sensor that detects the shell culm sensor, and operates the clutch on and off based on the shell culm detection and non-detection signals of the shell culm sensor, and disengages the clutch regardless of the output signal of the shell culm sensor. An automatic clutch device for a straw tying machine characterized by being equipped with an operating means.