JPS6225054Y2 - - Google Patents

Description

[Detailed Description of the Invention] "Industrial Application Field" The present invention relates to a manual override device for a combine harvester having an automatic steering device that automatically corrects the traveling direction of the combine harvester.

"Prior Art" Conventionally, as shown in Japanese Utility Model Application Publication No. 153232/1983, a manual priority arm that is linked to a side clutch lever and a manual priority switch that is switched via the arm are provided, and the manual priority switch is linked to the switching operation of the lever. There is now a technology to cancel automatic steering.

"Problems to be Solved by the Invention" However, in the prior art, the switch is fixed to the upper surface of a switch fixing bracket, the arm is horizontally suspended above the switch, and the arm is controlled by a side clutch lever. Since the switch was operated by pressing down from above, the arm and switch were easily damaged by the operation of the side clutch lever, and oil and dust on the lever rotation part were likely to adhere to the switch. There were structural and functional problems.

"Means for Solving the Problem" However, the present invention provides a manual priority arm that is linked to the on/off operation of the side clutch lever, and operates the manual priority switch for automatic steering in conjunction with the lever via the arm. In the device for switching the clutch lever, a switch fixing bracket is provided below a clutch lever shaft that supports the lever, and the switch is fixed to the horizontal lower surface side of the bracket that extends horizontally below the shaft, and The other end of the arm, one end of which is rotatably supported by the bracket, extends to the side clutch lever abutting position via the distal end of the horizontal portion.

``Function'' Therefore, since the switch is fixed on the horizontal lower surface side of the bracket, it is possible to easily prevent oil from the lever rotation part and dust from adhering to the switch, and also to prevent the switch from attaching to the switch. Because the manual priority arm is detoured to the tip of the horizontal section,
The arm can be interlocked with the clutch lever in a direction away from the distal end of the horizontal part, and the arm and the switch can be easily prevented from being damaged by the operation of the lever, and furthermore, the arm can be easily prevented from being damaged by the lever operation, and moreover, can be easily surrounded by the bracket and the arm, eliminating problems such as wires connected to the lever and repair workers coming into contact with the switch, and the structure is simpler and more functional than before. It can be configured as follows.

"Embodiments" Hereinafter, embodiments of the present invention will be described in detail based on the drawings. Figure 1 is a side view of the combine harvester, and Figure 2 is its plan view, where 1 is the machine base, 2 is a pair of traveling crawlers 3
A truck frame 4 equipped with a and 3b on both left and right sides is a pivot shaft that rotatably supports the machine 1 with respect to the truck frame 2, and 5 is a pivot shaft in front of the machine 1 with this pivot shaft 4 as a fulcrum. A lifting hydraulic cylinder 6 for lifting the grain upward is a threshing machine mounted on the machine base 1, and a handling cylinder 7 is mounted inside thereof in a longitudinal direction of the machine base 1. Reference numeral 8 denotes a reaping device for multi-row mowing, which includes a plurality of grass dividing boards 9 and a cutting blade 10. 1
Reference numeral 1 denotes a grain culm pinching transfer device, and this device 11 includes a feed chain 12 and a pinching rod 13.

Further, 14 is a step, and a driver's seat 15 is provided on this step 14, and a driving operation section 16 is formed in the front part of the driver's seat 15.
An operating column 17 is erected, and a threshing clutch lever 18, a reaping clutch lever 19, and left and right side clutch levers 20, 21 are erected from within this operating column 17 on an operating panel surface 17a.

Furthermore, 23 is a paddy receiving stand, and above it is facing a grain frying conveyor device 24 that takes out fine grains from the first mouth. 25 is a straw cutting device detachably installed at the rear of the threshing machine 6; 26 is a feed chain 1;
A straw removal chain 27 extends from the terminal end of the straw removal chain 2 to the upper part of the cutter of the straw removal cutting device 25, and 27 is a cover for the chain 26.

Further, 28 is an engine mounted on the machine base 1, and 29 is a drive sprocket for the traveling crawler 3. Further, 30 is the sprocket 2
Together with 9, a front idler supports the end of the traveling crawler 3; 31 is a carrier roller that is brought into sliding contact with the upper inner surface of the traveling crawler 3; and 32 is a truck roller that is brought into sliding contact with the lower inner surface of the traveling crawler 3. Furthermore, 33 is a dust suction/exhaust device whose suction port is opened toward the sorting style, and 34 is a handling barrel pulley cover.

Next, a bearing housing 35 is placed above the cutting blade 10.
A star wheel 36 is rotatably mounted on the bearing housing 35. Each star foil 36 is connected to the left and right grain culm lifting devices 37, 3.
8, 39, 40, and lower conveyor chains 41, 41 are provided coaxially with the star wheel 36, forming left and right lower conveying devices, and configured to pinch and convey the culm base of the grain culm. are doing.

Further, upper conveying devices 42, 42 for pinching and conveying the grain tip side are extended above the lower conveying device, and a ear tip conveying device 43 is installed behind these devices 42, 42, and the terminal end of this ear tip conveying device 43 is installed. A vertical conveying device 44 whose length can be adjusted is facing the culm, and the device 44
The terminal end extends to the starting end of the feed chain 12. Reaping frame 4 that supports the grass dividing board 9...
5 includes a running direction detection device 46 as shown in FIG.
There are 47.

The detection devices 46 and 47 include a sensor box 4 incorporating a steering sensor switch (not shown).
8, 50 and sensor arms 49, 51, which detect the distance from the uncut grain culm, turn on/off the steering sensor switch, and apply a detection signal to the automatic steering device 52. It is something.

Next, as shown in FIG. 3, inside the mission case 53 is a main shaft 54. Sub-shift shaft 55 and clutch shaft 5
6 is mounted on a shaft, and the main shaft 54 is equipped with a high-speed gear 57a.
A main shaft gear 57 having a low-speed gear 57b is fitted in a axially movable manner. Further, a high speed gear 58 that meshes with the gear 57a, a low speed gear 59 that meshes with the gear 57b, and a constant mesh gear 60 are fitted to the sub-transmission shaft 55, respectively. Furthermore, the clutch shaft 56 includes an input gear 61 and transmission bodies 62, 6.
3 and hydraulic clutch gears 64, 6.
5, hydraulic multi-plate (side clutch) 66,6
7 is turned on to transmit the rotational force of the transmission bodies 62 and 63 to the hydraulic clutch gears 64 and 65, while the piston rods of the steering cylinders 68 and 69 are moved and the hydraulic multi-plate clutches 66 and 67 are turned off and the hydraulic pressure is increased. It is constructed to cut off the driving force to the clutch gears 64, 65.

Furthermore, sprocket shafts 72 and 73 are mounted in final cases 70 and 71 provided on both sides of transmission case 53, and each sprocket shaft 72 and 7
The sprockets 29, 29 are fitted to the outer ends of the sprocket shafts 72, 73, and the inner ends of the sprocket shafts 72, 73 extend into the transmission case 53, and the respective hydraulic clutch gears are fitted to the inner ends of the sprocket shafts 72, 73, respectively. Spur gears 74 and 75 that mesh with gears 64 and 65 are fitted. on the other hand,
An input pulley 76 is fitted onto the main shaft 54, and the rotational force of the engine 28 is transmitted to the pulley 76.

Next, an electromagnetic switching valve 80 having solenoids 78 and 79 is provided on the discharge side of the hydraulic pump 77 to communicate the discharge side of the pump 77 and the pump port P of the switching valve 80. While connecting the port T to the tank 81, the switching valve 8
The ports A and B of 0 are connected to the steering cylinders 68 and 69 separately, and a relief valve 82 is provided between the discharge side of the pump 77 and the tank 81.

One solenoid 78 is for turning the combine machine to the left, and the other solenoid 79 is for turning the combine machine to the right.

In addition, the automatic steering device 52 and the power input terminal 8
An automatic steering switch 84 is connected between the automatic steering device 52 and the automatic steering output device 52, and a manual priority switch 85 is provided for switching off the automatic steering input to the automatic steering device 52 or the automatic steering output from the automatic steering device 52.

Next, as shown in FIGS. 4 to 8, an L-shaped switch fixing bracket 8 is installed inside the operating column 17.
6 is horizontally mounted, and the upper horizontal part 8 of this bracket 86
The manual priority switch 85 is attached to the lower surface of 6a using screws 87 and nuts 88.

Further, a cylindrical body 89 is provided at the bottom of the bracket 86.
is fixed by welding means, the proximal end of the manual priority arm 90 is inserted into this cylinder 89, a torsion coil spring 91 is wound around this part, and one end of this spring 91 is attached to the bracket 86, and the other end is fixed to the bracket 86. The ends are pressed against the arms 90, and the intermediate portions of the arms 90 are configured to abut against the distal end surface 86b of the upper horizontal portion 86a of the bracket 86.

The upper horizontal portion 86a of the bracket 86 also serves as a stopper for the manual priority arm 90, and is constructed to prevent the switch 85 from being damaged by the arm 90 and to simplify the structure.

Further, the actuator 85a of the switch 85 is operated at the intermediate portion of the manual priority arm 90, and the upper end of the arm 90 is extended to the base end portions of the left and right side clutch levers 20, 21. bend horizontally to form a horizontal portion 90a,
An L-shaped plate 90b, which is longer than the distance between the levers 20 and 21, is fixed to the horizontal portion 90a.

Furthermore, the side clutch levers 20, 21
The base end cylindrical portions 20a, 21a are loosely fitted to the clutch lever shaft 92, and each cylindrical portion 20a, 21a is loosely fitted to the clutch lever shaft 92.
The spring 9 is attached to the projecting pieces 93, 93 integrally formed with the
4,94 to the side clutch wires 95,9.
5 are connected.

Further, the manual priority switch 85 includes an actuator 85a and a push button 85b, and uses a normally closed contact point of the switch 85.

The L-shaped plate 90b is the side clutch lever 2.
0 and 21, and when any of the side clutch levers 20, 21 is turned off, the L-shaped plate 90b and the manual priority arm 90 are slid, and the switch 85 is turned from off to on. It is configured so that it can be switched.

The present invention is constructed as described above, and the driving force of the engine 28 is provided by hydraulic multi-plate clutches 66, 6.
7 and hydraulic clutch gears 64, 65 to spur gears 74, 75, and further to each sprocket 29, 29 via sprocket shafts 72, 73.
When the combine harvester is moving straight along the grain culm row, the automatic steering device 52 does not output an automatic steering signal, so the combine harvester moves straight. maintain.

On the other hand, when the combine moves to the left, the automatic steering device 52 outputs a right turn signal, and the switching valve 80
One solenoid 79 is energized, and the electromagnetic switching valve 8
0 and supplies hydraulic oil to the actuator 68 through each port P and B, and the right crawler 3b
Stop the combine harvester and correct the running direction of the combine to the right.

Conversely, when the combine moves to the right, the automatic steering device 52 outputs a left turn signal, and the switching valve 80
The other solenoid 78 is energized, and the electromagnetic switching valve 8
0 and supplies hydraulic oil to the actuator 69 through each port P and A, and the left crawler 3a
Stop the combine harvester and correct the running direction of the combine to the left. During this automatic steering, when either the left or right side clutch lever 20, 21 is turned off, the manual priority switch 85 is switched from off to on, and the automatic steering signal to the solenoids 78, 79 is interrupted, and the manual override switch 85 is switched from off to on. Priority is given to operations by

For example, when the left side clutch lever 20 is turned clockwise from the solid line position in FIG. 4, the L-shaped plate 90b and manual priority arm 90 swing clockwise against the coil spring 91.
The pressing force of the arm 90 on the actuator 85a of the switch 85 is released, the manual priority switch 85 is turned on and the automatic steering signal is cut off, and the side clutch is operated via the side clutch wire 95 etc. This allows the aircraft's traveling direction to be corrected to the left by manual operation.

"Effects of the Invention" As is clear from the above embodiment, the present invention provides a manual priority arm 90 which is linked to the on/off operation of the side clutch levers 20, 21, and a manual priority switch 85 for automatic steering is switched in linkage with the levers 20, 21 via the arm 90. The switch fixing bracket 86 is attached to the underside of the clutch lever shaft 92 which supports the levers 20, 21.
The switch 85 is fixed to the lower surface of the horizontal portion 86a of the bracket 86 which extends horizontally below the shaft 92, and the arm 90 is supported at one end by the bracket 86 so as to be rotatable.
The other end of the switch 85 is extended to the contact position of the side clutch levers 20, 21 via the tip end side of the horizontal portion 86a. Since the switch 85 is fixed to the lower surface side of the horizontal portion 86a of the bracket 86, it is possible to easily prevent the oil of the rotating portion of the levers 20, 21 and the adhesion of dust and the like to the switch 85. In addition, since the manual priority arm 90 provided on the bracket 86 is made to detour to the tip end side of the horizontal portion 86a, the arm 90 can be moved in a direction away from the tip end side of the horizontal portion 86a. 1, it is possible to easily prevent damage to the arm 90 and switch 85 by operating the levers 20, 21, and the outer periphery of the switch 85, such as above, below, front, back, etc., can be easily surrounded by the bracket 86 and arm 90, it is possible to eliminate inconvenience such as the wires connected to the levers 20, 21 and the worker performing repairs touching the switch 85, and it is possible to achieve practical effects such as a functional configuration with a simpler structure than before.

[Brief explanation of the drawing]

Fig. 1 is a side view of a combine harvester showing an embodiment of the present invention, Fig. 2 is a plan view thereof, Fig. 3 is an automatic steering system diagram, Fig. 4 is an enlarged sectional view of main parts, and Fig. 5 is a cross-sectional view of the main parts. 4
6 is a plan view of the switch 85, FIG. 7 is an explanatory cross-sectional view, and FIG. 8 is a view of the switch 85.
FIG. 20, 21...Side clutch lever, 85...
...Manual priority switch, 86...Switch fixing bracket, 86a...Horizontal part, 90...Manual priority arm, 92...Clutch lever shaft.

Claims (1)

[Scope of utility model registration request] In a device that is provided with a manual priority arm 90 that is linked to the on/off operation of the side clutch levers 20, 21, and that switches the manual priority switch 85 for automatic steering in conjunction with the levers 20, 21 via the arm 90, the lever A switch fixing bracket 86 is provided below the clutch lever shaft 92 that supports the clutch levers 20 and 21, and the switch 85 is fixed to the lower surface side of the horizontal portion 86a of the bracket 86 that extends horizontally below the shaft 92. , an automatic operation characterized in that the other end of the arm 90, one end of which is rotatably supported by the bracket 86, is extended to a contact position of the side clutch levers 20, 21 via the distal end side of the horizontal portion 86a. Manual override device for combines with a control device.