JPH06165609A - Farm tractor - Google Patents

Abstract

(57) [Abstract] [Purpose] Various controls between the agricultural tractor body and working equipment were made wireless using radio wave transmitters and receivers. [Structure] In an agricultural tractor that detachably connects a working machine (4) having a control means (34) to the rear of the machine body (2),
A hand control unit (36) that controls the work machine (4) on the machine body (2) side
A radio wave transmitter / receiver (37) was provided, and a work machine (4) side was equipped with a controller (40) and a radio wave transmitter / receiver (41) that were operated by an independent power source.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an agricultural tractor in which a working machine such as a rotary is connected to a rear portion of a machine body.

[0002]

2. Description of the Related Art Conventionally, in an agricultural tractor in which the main machine side and the working machine side are detachable via a hitch device, a hand control device provided on the main machine side controls the working machine side control means. In addition, there are wire harnesses having a coupler that are extended or a hitch device that is provided with a coupling joint for connection.

[0003]

However, when removing the working machine side of the agricultural tractor from the machine, it is necessary to release the hitch device to disconnect the working machine side, and then to disconnect the coupler and joint on the wire harness side. was there.

However, it is often forgotten to disconnect the coupler and the coupling joint of the wire harness, and the wire harness and the coupling joint are sometimes damaged.

Further, the manufacturing cost of the hitch device provided with a coupling joint for connection is high.

[0006]

Therefore, according to the present invention, in an agricultural tractor in which a working machine having a control means is detachably connected to the rear of the machine body, a hand controller for controlling the work machine is provided on the machine body side. In addition to providing a radio wave transmitter / receiver, the working machine side is provided with an agricultural tractor equipped with a controller and a radio wave transmitter / receiver that are operated by an independent power source.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail with reference to the drawings. Reference numeral 1 is an agricultural tractor, which is detachably connected to a rear portion of a machine body 2 via a hitch device 3.

Reference numeral 6 is a top link mounting bracket fixed to the rear portion of the machine body 2, 7 is a lower link mounting pin, and 8 is an automatic connection mechanism provided in the hitch device 3 so that the working machine 4 can be automatically mounted.

Reference numeral 9 denotes a rear view gate-shaped hitch frame which constitutes the automatic connection mechanism 8. The upper part is connected to the top link 10 and the lower part is connected to the lower link 11 so as to be vertically movable. There is.

Reference numeral 12 is a lift arm, and 13 is a lift link having a hydraulic expansion / contraction mechanism 13A on one side.
And lower link 11 are connected. 14 is the PTO on the side of Aircraft 2
A universal joint that freely connects the shaft 15 and the dock clutch 17 on the clutch case 16 side.

Further, on the upper portion of the hitch frame 9,
A U-shaped bearing portion 20 that supports an upper frame 19 of a rotary working portion 18 which is the working machine 4 is fixed, and lower lower sides of the hitch frame 9 are provided on both lower lower sides of the rotary working portion 18. The hook portions 22 and 22 to which the pins 21 and 21 are detachably fitted are fixed. 23 is an automatic connection mechanism 8
The lock mechanism 24 of FIG.

Reference numeral 26 is a rotary pawl, and the rotary pawl 26
The upper part of is covered by the rotary cover 27,
The rotary cover 27 is rotatable in the front-rear direction according to the tillage depth. Reference numeral 28 is an electric actuator that rotates the rotary cover 27 in the front-rear direction, and is expandable and contractable by a drive motor 29.

Reference numeral 30 denotes a rear cover which is continuous with the rear portion of the rotary cover 27, and the rear cover 30 is the rotary cover 27.
It is freely movable with respect to.

Reference numeral 31 is a detection sensor for detecting the rotation angle of the working device 32 such as the rear cover 30 and other conditions. The detection sensor 31 is composed of a potentiometer 33.
The detection sensor 31 and the electric actuator 28 constitute the control means 34.

Reference numeral 35 is an elevating operation lever for vertically moving the working machine 4 side, and 36 is a hand control unit for controlling the control means 34 provided on the working machine 4 side. Then, the same-hand control unit 36 is connected to a radio wave transmitter / receiver 37 which transmits a signal to the working machine 4 side by radio waves and receives a radio wave of a signal emitted by the working machine side. 37-1 is an antenna, 38 is a power supply battery.

Reference numeral 40 denotes a controller for controlling the control means 34 on the working machine 4 side, which is connected to the radio wave emitting / receiving device 41. The controller 40 and the radio wave transmitter / receiver 41 are mounted on the working machine 4 side.
Reference numeral 41 denotes a signal received from the radio wave emitting / receiving device 37 on the side of the machine body 2 as a radio wave, and the controller 40 outputs the detection result of the control means 34.
Signal is generated by this, and this is transmitted by radio waves from the body 2 side.
The signal is transmitted to the receiver 37. 41-1 is an antenna, and 42 is a power supply battery mounted on the working machine 4 side.
A horizontal sensor 43 is provided on the working machine 4 side and is connected to the controller 40.

The embodiment of the present invention is configured as described above, and when the working machine 4 is detached from the machine body 2 of the agricultural tractor, the automatic connecting mechanism 8 provided in the hitch device 3 is operated to disconnect the working machine 4. Only, again, the machine body 2 and the working machine 4
Since there is no wire harness or the like between and, the working machine 4 can be easily separated.

As described above, according to the above embodiment, the airframe 2
In the agricultural tractor to which the working machine 4 having the control means 34 is detachably connected in the rear of the machine, a hand control unit 36 for controlling the working machine 4 and a radio wave transmitter / receiver 37 are provided on the machine body 2 side, and work is performed. Since the machine 4 is an agricultural tractor equipped with a controller 40 and a radio wave generator / receiver 41 that are operated by independent power sources, when the working machine 4 is separated from the agricultural tractor machine body 2, the hitch device 3 is used. Release and work machine 4
It is only necessary to disconnect the connector, and it is not necessary to disconnect the coupler of the wire harness or the coupling joint for connection, and the work can be done efficiently.

Further, it is not necessary to provide an expensive coupling joint for connection to the hitch device.

[0020]

According to the present invention, in an agricultural tractor in which a working machine having a control means is detachably connected to the rear of the machine body, the machine body side has a hand control unit for controlling the work machine and radio wave reception / reception. Since it is an agricultural tractor equipped with a machine and a working machine side equipped with a controller and a radio wave generator / receiver that operate from an independent power source, a hitch device should be used when disconnecting the working machine from the agricultural tractor body. It is only necessary to release and disconnect the working machine, and it is not necessary to disconnect the coupler of the wire harness or the coupling joint for connection, and the work can be performed efficiently.

Further, it is not necessary to provide the hitch device with an expensive coupling joint for connection.

[Brief description of drawings]

FIG. 1 is a side view of a main part of an agricultural tractor according to the present invention.

FIG. 2 is a rear view showing the hitch device.

[Explanation of symbols]

 1 Agricultural tractor 2 Aircraft 4 Working machine 36 Hand control unit 37 Radio wave transmitter / receiver 40 Controller 41 Radio wave transmitter / receiver

Claims (1)

[Claims] 1. An agricultural tractor in which a working machine (4) having a control means (34) is detachably connected to the rear of the machine body (2), and the working machine (4) is controlled on the machine body (2) side. Hand control unit (36)
An agricultural tractor equipped with a radio wave transmitter / receiver (37), and a controller (40) and a radio wave transmitter / receiver (41) that are operated by an independent power source on the working machine (4) side.