JPH0555807U - Steering control device for combine harvester - Google Patents

Abstract

(57) [Summary] [Object] The present invention is intended to provide a steering control device using a multi-steering lever, which can be obtained at low cost and has good operability. is there. [Structure] A pair of lever switches S ₁ and S ₂ are provided on the left and right of the multi-steering lever, a direction sensor is provided at the mowing section, and the current to the solenoid for opening and closing the side clutch is interrupted according to the detection result of this direction sensor. In the made combine, the lever switch S
₁ and S ₂ are constituted by double throw contact type micro switches, and when the lever switch is in the OFF state (the state where the multi-steering lever is in the neutral position), the solenoid can be energized through the direction sensor and is turned ON. A steering control device of a combine configured to energize a solenoid through a circuit bypassing the direction sensor in a state (a state in which a multi-steering lever is tilted).

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention relates to a steering control device for a combine, which is capable of performing a steering operation of opening and closing a side clutch by opening and closing a lever switch by operating a multi-steering lever and a steering control automatically based on a detection result of a direction sensor.

[0002]

[Prior Art]

 Conventionally, a combine that inputs the detection result of the direction sensor to the microcomputer and outputs the calculation result of the microcomputer to the side clutch operating device for automatic steering control, or a combine that operates by turning the side clutch on and off manually Already known.

[0003]

[Problems to be solved by the device]

 Since the steering control device in the known combine controls the traveling direction using the microcomputer, the cost is significantly increased. Further, since automatic control and manual operation are switched by the automatic manual changeover switch, the cost is further increased and the operation becomes complicated.

[0004]

[Means for Solving the Problems]

 The present invention has a combine steering system in which a pair of lever switches are provided on the left and right of the multi-steering lever, a directional sensor is provided at the mowing section, and the current to the solenoid that turns on and off the side clutch is interrupted according to the detection result of this directional sensor. In the above, the lever switch is composed of a double throw contact type micro switch, and when the lever switch is in the OFF state (the state where the multi-steering lever is in the neutral position), the solenoid can be energized via the direction sensor. , ON state (the state where the multi-steering lever is tilted) is configured to energize the solenoid through the circuit bypassing the direction sensor, so that the side clutch disengagement is performed at the same time as the automatic steering is switched by the operation of the multi-steering lever. Or before entering so that you can enter The problem was solved.

[0005]

[Action]

 When the multi-steering lever is set to the neutral position during the mowing and threshing work, the aircraft runs with both side clutches engaged, and during that time, the direction of travel is corrected based on the detection results of the direction sensor. Also, when turning the aircraft, if the multi-steering lever is tilted sideways to the turning position, the normally closed lever switch on that side disconnects from the contact on the automatic circuit side where the direction sensor is inserted. Then, the contact on the circuit side bypassing the direction sensor is turned on, so the solenoid is energized and the side clutch on that side is disengaged, and the aircraft turns. When the multi-steering lever is released after turning the aircraft, it returns to the neutral position, and the lever switch comes into contact with the contact point on the automatic circuit side, and the direction is automatically controlled again.

[0006]

【Example】

 The present invention will be described in more detail with respect to the combine shown in the drawings. An engine 7, a grain hopper 8 and a cutter 9 are arranged, a headlight 10 is provided on the lower front surface of the operation panel 5, a parking brake lever 11 is provided on a side portion, and a machine base 2 below the grain hopper 8 is provided. A foldable subfloor 12 is attached to the side of the, and turn indicators 13, 13 are attached to both outer surfaces of the grain hopper 8. Further, in front of the threshing device 3, while adjusting the handling depth of the grass body 15 ..., The grain culm raising body 16 having a large number of raising claws 16a .., the cutting blade, and the cutting grain culm. A pretreatment device, such as a grain culm conveying device, which is supplied to the threshing device 3, is mounted so as to be able to move up and down.

A U-shaped gripping rod 17 is fixed to one side of the upper part of the operation panel 5 on the front side, and a base of a multi-steering lever 18 provided at the center is provided with a hydraulic cylinder for moving up and down the pretreatment device. The lift valve 18a inserted in the oil passage and the clutch valve d inserted in the oil passage of the side clutch cylinders c, c for operating the side clutch a and the side brake b are linked and linked, and the clutch valve d is in the neutral position. When the operating position is changed from the left to the right operating position, the hydraulic oil is press-fitted into one of the side clutch cylinders c, and the spool 24a slides to the other, thereby actuating the shifter 24b to disconnect the side clutch a. Further, a main operation lever 22, an auxiliary speed change lever 23, a lift lock knob 26, a hydraulic lift lever are provided on a side operation panel 21 arranged on the side of the threshing device 3 of the operation part including the operation panel 5 and the driver's seat 6. 27, a threshing clutch lever 28, and a reaping clutch lever 30 are provided. Reference numeral 31 is a clutch pedal and 31a is a narrow guide.

Double-contact type micro switches 14a and 14b are provided on opposite sides of the multi-steering lever 18, and the side clutch a and the side brake b are side clutches similar to the conventional ones. It is mounted on both sides of the center gear 24a mounted on the shaft 24 and is pushed out by energizing the solenoids sol (R) and sol (L) to the outside of the cam 19 protruding from the outer peripheral surface of the side clutch a. There is provided a clutch pin 25 which presses the inclined surface 19b of the cam 19 and operates to disengage the side clutch a.

FIG. 3 is a direction control circuit diagram for connecting / disconnecting the side clutch a by the clutch pin 25. The fuse and the changeover switch 34 connected to a 12V power source, the direction sensor 35, the solenoid sol (R), The micro-switches 14a and 14b are inserted in series in the automatic control circuit 32 leading to (L). These micro-switches 14a and 14b are in the state where the multi-steering lever 18 is in the neutral posture. When the multi-steering lever 18 is contacted with the contacts C and E and the multi-steering lever 18 is tilted to the left or right, the one on that side bypasses the direction sensor 35 and is connected to the solenoids sol (R) and (L). It is in contact with the contact D or F. The direction sensor 35 is composed of a right end grass body 15 and a right sensor 35a and a middle sensor 35b provided at the rear portion of the grass body 15 inside thereof.

When performing the mowing and threshing work, when the changeover switch 34 is turned on, the monitor lamp 37 is turned on, and when the machine is inserted into the napped culm, the direction sensor 35 causes the grain culm row. And the solenoid sol (R) or (L) is energized according to the detection result, the clutch pin 25 projects and the side clutch a is disengaged to correct the direction. Is transported and supplied to the threshing device 3 by the grain culm transporting device for threshing processing.

When the multi-steering lever 18 is tilted to one side to the left (right) turn (fine correction position) as shown in FIG. The switch 14a or 14b is switched to the contact D or F, the automatic control circuit 32 is disconnected, and at the same time the corresponding solenoid sol (R) or (L) is energized, the clutch pin 25 on that side projects. Cut the side clutch a or b. At that time, since the side clutch b or a on the other side is in the engaged state and the crawler on that side is forcibly driven, the side clutch shaft 24 rotates together with the crawler on the disengaged side, whereby the cam 19 rotates. As it moves, it repeatedly makes and breaks intermittently, and eventually the aircraft turns gently. Then, when the tilting angle of the multi-steering ring lever 18 is tilted to the left (right) turning position, the clutch valve d is switched and hydraulic oil is press-fitted into the side clutch cylinder c, and the spool 24a also serving as a shifter shaft is shifted to the shifter 24b. Is rotated to completely disengage the side clutch a, and the multi-steering lever 18 is fully tilted to the sudden turning position, the side brake b is activated and the aircraft rapidly turns. When the multi-steering lever 18 is released after adjusting after the aircraft has finished traveling, it automatically returns to the neutral position, and the microswitch 14a or 14b is switched to the contact C or E to operate the steering wheel. Return to a state where automatic control can be performed.

[0012]

[Effect of the device]

 According to the present invention, a pair of lever switches are provided on the left and right of the multi-steering lever 18, and a direction sensor 35 is provided at the mowing part. The detection result of the direction sensor 35 is used to interrupt the current to the solenoid for opening and closing the side clutch. In such a combine, the lever switch is constituted by double-throw contact type micro switches 14a and 14b, and the lever switch is in an OFF state (a state in which the multi-steering lever 18 is in a neutral position) and a direction sensor is provided to the solenoid. Since the solenoid is energized via 35, the solenoid is energized via the circuit bypassing the direction sensor 35 in the ON state (the state where the multi-steering lever 18 is tilted), so automatic manual switching is performed. Tilt the multi-steering lever 18 without operating the switch. The one-touch operation immediately turns the automatic control circuit into the disengaged state, and the side clutch on that side can be disengaged. In addition, simply releasing the hand from the multi-steering ring lever 18 results in automatic control based on the detection result of the direction sensor 35. It can be returned to the state. Further, since the lever switch is simply replaced by the double throw contact type micro switches 14a and 14b without requiring an expensive microcomputer, the cost can be remarkably reduced.

[Brief description of drawings]

FIG. 1 is a perspective view of a combine.

FIG. 2 is a perspective view of a driving unit.

FIG. 3 is a control circuit diagram.

FIG. 4 is a plan view showing an operation pattern of a multi-steering lever.

FIG. 5 is a cross-sectional view of a side clutch portion of the transmission.

FIG. 6 is a vertical sectional view of the same.

FIG. 7 is an exploded perspective view showing a relationship between a side clutch pin and a side clutch.

[Explanation of symbols]

 1 Traveling device 3 Threshing device 5 Operation panel 14a, 14b Micro switch 18 Multi steering lever 19 Cam 32 Automatic control circuit 33 Manual circuit 35 Direction sensor

Claims (1)

[Scope of utility model registration request] 1. A pair of lever switches are provided on the left and right of the multi-steering lever 18, and a direction sensor 3 is provided at the cutting section.
5 is provided, and in the combine in which the current to the solenoid for opening and closing the side clutch is interrupted according to the detection result of the direction sensor 35, the lever switch is constituted by the double throw contact type micro switches 14a and 14b. When the lever switch is in the OFF state (the state where the multi-steering lever is in the neutral position), the solenoid can be energized through the direction sensor, and in the ON state (the state where the multi-steering lever 18 is tilted), the direction sensor 35 is activated. A combine steering control device characterized in that the solenoid is energized through a circuit bypassing the.