JP2566319Y2 - Horizontal control device for tractor working machine - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a horizontal control device for a tractor working machine.

[0002]

2. Description of the Related Art Conventionally, as a horizontal control device for detecting the inclination angle of a working device of an agricultural tractor and controlling the working device in a horizontal state, a device provided with a tilt detection sensor at a rear upper position of a traveling vehicle body is known. Exists.

[0003]

However, in the above-mentioned prior art, a work machine is vertically connected to a rear portion of a traveling vehicle body via a lift arm and a lower link, and a tilt is detected at an upper rear portion of the traveling vehicle body. Since the sensor is provided, the left-right inclination posture of the working device is calculated from the left-right inclination angle of the traveling vehicle body, and the left-right posture of the working device with respect to the traveling vehicle body is corrected based on the calculation result. Cannot be controlled horizontally.

[0004]

According to the present invention, a working device is connected to a rear portion of a traveling vehicle body via a top link and a left and right lower link, and a pair of left and right lift arms provided at the rear portion of the traveling vehicle body. In the tractor working machine in which the working unit is movable up and down by the lift arm, the upper and lower portions of the left and right lower links are connected via a fixed lift link and a telescopic lift link. The base of the sensor connecting flexible member is connected, the work implement side inclination detection sensor is connected to the tip of the sensor connection flexible member, and the wire harness connected to the work implement side inclination detection sensor is connected to the sensor connecting flexible member. The work implement side inclination detection sensor is covered with a sensor cover body having a magnet. On the other hand, there is provided a horizontal control device for a tractor working machine, wherein a sensor mounting base is mounted on a working device, and the work machine side inclination detection sensor is detachably mounted on the sensor mounting base via a magnet. Things.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail with reference to the drawings. Reference numeral 1 denotes an agricultural tractor, which comprises a traveling vehicle body 2 and a working device 4 such as a rotary working machine 3. 5 is
This is a three-point hitch that connects the traveling vehicle body 2 and the rotary work machine 3 to be able to move up and down freely. Reference numeral 6 denotes a lift arm connected to the hydraulic cylinder 7, which suspends left and right lower links 9-1 and 9-2 via left and right lift links 8-1 and 8-2.

A top link 10 is connected to a top mast 11 on the rotary working machine 3 side, and a base is connected to a top link mounting metal 12 on the traveling vehicle body 2 side.

In FIG. 2, reference numeral 13 denotes a lift cylinder provided on the right lift link 8-2. Reference numeral 14 denotes a sensor connection flexible member provided at the tip of the lift arm 6 on the traveling vehicle body 2 side, and connects the base 14-1 to the lift arm pin 15.

The sensor connecting flexible member 14 is flexible while being extendable and contractable, and a work implement side inclination detecting sensor 16 is connected to the rear end 14-2. Reference numeral 17 denotes a sensor cover body having a magnet 18. The center cover body 17 covers the work implement-side inclination detection sensor 16.

Reference numeral 19 denotes a top mast 11 on the rotary working machine 3 side.
The rotary work machine 3
While being installed in parallel with the tillage device 3-1
In contrast, when the rotary work machine 3 is connected, the work machine-side inclination detection sensor 16 can be mounted. Reference numeral 20 denotes a wire harness that extends from the work implement-side inclination detection sensor 16, and is penetrated inside the sensor connecting flexible member.

The embodiment of the present invention is configured as described above. When the rotary working unit 3 is connected to the rear part of the traveling vehicle body 2, the left and right lower links 9-1, 9-2 and the top link 10 are connected.
The rotary working machine 3 is connected to the rotary work machine 3 via a
Is extended to the rotary work machine 3 side, and a work machine side inclination detection sensor 16 provided at the rear end of the sensor connecting flexible member 14 is provided on the top mast 11 so that it can be mounted on a sensor mount 19. In this case, since the sensor cover body 17 on which the sensor 16 is mounted has the magnet 18, the sensor 16 can be easily attached with one touch.

Therefore, the right and left inclination of the rotary work machine 3 is reliably detected by the sensor 16 and the controller 16 detects the inclination.
The controller 21 drives the drive valve 22 to cause the lift cylinder 13 to expand and contract.

When the rotary work machine 3 is removed from the traveling vehicle body 2, the work machine-side inclination detection sensor 16 can be easily removed.

As described above, according to the above-described embodiment, the sensor connecting flexible member 14 is connected to the lift arm 6 on the traveling vehicle body 2 side.
A work implement side inclination detection sensor 16 is provided at the rear end of the sensor 14, and the detection sensor 16 is a sensor cover body having a magnet 18.
17 allows the sensor to be easily mounted on the sensor mount 19 on the working device 4 side.

Therefore, the swinging of the working device 4 in the left-right direction can be reliably detected by the work implement-side inclination detecting sensor 16 and fed back to the controller 21. Further, the controller 21 and the drive valve 22 Thus, the working device 4 can always be controlled to be in a horizontal state while the lift cylinder 13 is vertically extended and contracted.

FIGS. 5 and 6 show another embodiment of the mounting portion of the work implement side inclination detecting sensor. In the drawing, reference numeral 30 denotes a sensor connection extending rearward from the traveling vehicle body 2 side. Flexible member, which can be extended and contracted and bendable in the left-right direction. Reference numeral 31 denotes a ball joint provided inside the sensor connecting flexible member 30, and reference numeral 32 denotes a working machine side inclination detection sensor connected to a rear end of the sensor connecting flexible member 30 via a sensor cover 33. A magnet 34 is fixed to a lower portion of the 33.

Reference numeral 35 denotes a sensor mounting base provided on the top mast 11 on the rotary working machine 3 side, to which a sensor cover 33 can be attached.

Reference numeral 36 denotes a tillage cover that covers a tillage claw shaft 37. The tillage cover 36 is rotatable in the front-rear direction by a rotation motor 38 and an actuator 39. Reference numeral 40 denotes a link mechanism that operates according to the opening / closing operation of the rear cover 41, and is connected to a rear cover sensor 43 provided in the sensor cover 33 via a push-pull wire.

The power harness 44 of the rotary motor 38 and the push-pull wire 42 on the rear cover 41 side are guided to the sensor mount 35, and the sensor cover 33 and the sensor It is connected to the traveling vehicle body 2 via the connecting flexible member 30.

FIG. 7 shows connection terminals provided on the sensor mount. In FIG. 7, reference numeral 45 denotes a power harness.
A connection terminal for connecting to 44, which is made of stainless steel or the like. 46 is a lower recess provided on the sensor mounting base 35 side,
47 is an upper concave portion provided on the sensor cover 33 side, and these are each made of engineering plastic. Reference numeral 48 denotes a spring body that supports the lower side of the connection terminal 45, and 49 denotes a spring body that presses the upper side of the connection terminal 45.
Is connected to

Therefore, in the case of the above embodiment, when the rotary work machine 3 is connected to the traveling vehicle body 2, both are connected via the lower link and the top link.
The sensor cover 33 provided on the rear end of the sensor connecting flexible member 30 is attached to the sensor mount 35 on the rotary working machine 3 side.
Place on top. In this case, the sensor cover 33 is securely set on the sensor mounting base 35 by the magnet 34 attached to the sensor cover 33. Accordingly, the inclination angle of the rotary work machine 3 can be reliably detected by the work machine-side inclination detection sensor 32 for the left-right inclination of the rotary work machine 3.

When the sensor cover 33 is set on the sensor mounting base 35, the rotating motor 38 for the tillage cover 36
Is connected to a battery and operation switches on the traveling vehicle body.

At the same time, the push-pull wire 42 for transmitting the opening / closing operation of the rear cover 41 and the rear cover sensor 43 are connected, and the opening / closing of the rear cover 41 is controlled.

As described above, according to the above-described embodiment, when the working device is connected to the traveling vehicle body, the working machine-side inclination detecting sensor is moved to the rotary working machine side with one touch via the sensor connecting flexible member. Can be installed,
When removing the working device, the detection sensor can be easily removed. At the same time,
The harness for the power supply of the rotary motor for the cultivation cover can be easily connected to the traveling vehicle body, and when the rear cover sensor is installed in the sensor cover, the rear cover sensor is controlled by a push-pull wire via the sensor mounting base. Can be done.

[0024]

According to the present invention, the following effects can be obtained.

That is, in the present invention, since the work implement-side inclination detection sensor can be directly attached to the work equipment, the work equipment can be accurately level-controlled.

Moreover, since the work implement-side inclination detection sensor is detachably attached to the sensor mounting base attached to the work equipment via a magnet, it is easy to connect / disconnect the work equipment to / from the traveling vehicle body. The sensor can be detached.

Further, since the work implement-side inclination detection sensor is connected to the distal end of the lift arm provided on the traveling vehicle body via the sensor connection flexible member, the sensor connection flexible member is used as much as possible. And the wire harness penetrated into the sensor connecting flexible member can be shortened, and the protection of the wire harness can be secured. Good horizontal control can be ensured.

[Brief description of the drawings]

FIG. 1 is an overall side view of an agricultural tractor equipped with the present invention.

FIG. 2 is a perspective view showing a main part of the present invention.

FIG. 3 is a schematic side view of the same.

FIG. 4 is a schematic plan view of the same.

FIG. 5 is an overall side view showing another embodiment of the present invention.

FIG. 6 is a schematic side view of the same.

FIG. 7 is an explanatory view showing connection terminals of a sensor mounting base.

[Explanation of symbols]

 2 Traveling body 4 Work equipment 6 Lift arm 8-1 Lift link 8-2 Lift link 9-1 Lower link 9-2 Lower link 12 Top link 14 Flexible member for sensor connection 16 Work implement side inclination detection sensor

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hideki Kamiyama 1-32 Chaya-cho, Kita-ku, Osaka-shi, Osaka Inside Yanmar Diesel Co., Ltd. (72) Inventor Shuichi Togami 428 Enami, Okayama-shi, Okayama Pref. Incorporated (56) References JP-A 62-192209 (JP, U) JP-A 57-31114 (JP, U) JP-A 2-92180 (JP, U) JP-A 59-64603 (JP, U) U)

Claims (1)

(57) [Scope of request for utility model registration] A working device (4) is provided at the rear of a traveling vehicle body (2).
Via the top link (12) and the left and right lower links (9-1, 9-2)
To the left and right at the rear of the traveling body (2).
The tip of a pair of lift arms (6, 6) and the left and right lower
Link (9-1, 9-2) and a fixed lift link (8-1)
And a telescopic lift link (8-2)
The working device (4) can be moved up and down by the lift arms (6, 6).
Of the lift arm (6, 6) on the tractor implement
Connect the base (14-1) of the cable member (14) to connect the sensor
Work implement side inclination detection sensor at the end of the flexible member (14)
ー (16) is connected and the work machine side inclination detection sensor
Connect the wire harness (20) connected to (16) to the sensor
Penetrating through the joining flexible member (14),
The tilt detection sensor (16) is a sensor having a magnet (18).
-While covering with the cover body (17), attach the sensor mounting base (19) to the work equipment (4), and
-Mount the work machine side inclination detection sensor (16) on the mounting base (19).
A horizontal control device for a tractor working machine, which is detachably attached via a gnet (18) .