JPH0724965Y2 - Slide control device for tillage part of tractor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a slide control device for a cultivating part of a tractor.

(B) Conventional technology Conventionally, the tillage and weeding work in the orchard are configured to be performed by the tiller connected to the tractor body through the elevator link mechanism, and the tiller is connected to the elevator link mechanism. On the other hand, the main beam and the tilling claw are configured to be laterally movable to improve the work efficiency.

In addition, such a cultivating part has a non-contact type distance sensor attached diagonally forward to the end of the main beam, so as not to damage the trunks of many fruit trees planted in the orchard,
It keeps a constant interval, and also efficiently performs middle tillage and weeding work.

(C) Problems to be solved by the invention However, the distance sensor attached to the main beam of the tillage part detects the obstacle diagonally forward of the tillage part, and when the main beam is moved to perform the tilling work. When the obstacle is located on the side of the tillage part, the sensor cannot detect the obstacle and moves the main beam to the side.

Therefore, there is a possibility that the cultivated part and an obstacle located on the side of the cultivated part come into contact with each other and damage the case of the cultivated part.

(D) Means for Solving the Problems In the present invention, a rotary tiller, which allows the main beam to move laterally via an elevating link mechanism, is attached to the rear part of the agricultural tractor, and at the end of the beam, A non-contact type distance sensor is rotatably attached, and further, a rotation mechanism for operating by lateral movement of the main beam is linked to the same sensor, and the detection direction of the sensor is freely changeable.
The sensor detects the distance between the cultivator and the obstacle, and the main beam of the cultivator is configured to move laterally based on this detection result. It is what

(E) Action / effect In the present invention, when the main beam of the tilling part is moved to the side to perform the tilling work in the orchard, for example, when the main beam is moved to the side, a non-contact type distance sensor is used. It is directed to the front, and automatically activates the main beam in the neutral direction based on the detection result of the obstacle of the distance sensor facing forward.

In addition, since the cultivating unit has a rotation mechanism that operates by movement of the main beam and is linked to a distance sensor, the sensor is rotated to change its direction and set the main beam to a neutral state. If so, the sensor is turned to the side.

Therefore, when the distance sensor is turned to the side, by detecting obstacles on the side of the tilling part, contact between the tilling part and obstacles can be prevented, and damage to the case of the tilling part can be avoided. You can

(F) Embodiment An embodiment of the present invention will be described in detail with reference to the drawings. In FIGS. 1 and 2, (A) shows an agricultural tractor, and a 3P link mechanism is provided behind a traveling body (B). The rotary tiller (C) is connected via the lifting link mechanism (1).

The traveling machine body (B) is provided with a prime mover section (2) at a front portion thereof, and transmits power to a transmission case (4) connected behind the prime mover section (2) via a clutch housing (3).
The rear wheels (5) arranged on the left and right sides of the mission case (4) are driven, and the front wheels (6) arranged on the left and right sides of the prime mover section (2) are erected on the driving section (7). The steering body (8) is steered to drive the traveling body (B).

The up-and-down link mechanism (1) has an up-and-down link rod (10) on the rear of the traveling vehicle (B) and the machine frame (9) of the rotary tiller (C).
(11) and the middle of the lower link rod (11) and the lift arm (13) of the hydraulic lifting mechanism (12) mounted on the upper surface of the transmission case (4) via the lift rod (14). The rotary tiller (C) is moved up and down.

As shown in FIG. 3, the rotary tiller (C) has a main beam (1) under the machine frame (9) of the lifting link mechanism (1).
5) is horizontally installed so that it can slide to the left and right, and between the machine frame (9) and the main beam (15), the outer cylinder (15a) and the outer cylinder (15a) connected to the machine frame (9) A hydraulic device (15b) made up of a rod (15c) inserted in is inserted. In addition, (15d)
Is a connecting rod that connects the machine frame (9) and the outer cylinder (15a).

Further, the main beam (15) is connected to the rod (15c) via the interlocking frame (15e), and the lifting link mechanism (1) is connected.
The main beam (15) is vertically slidable, the chain case (16) is hung vertically from the main beam (15), and the tiller shaft (17) is attached to the lower end of the chain case (16). In addition, the power from the prime mover (2) is used to rotate a plurality of plowing pawls (18) planted on the plowing shaft (17) to perform plowing work.

The outer periphery of the tilling claw (18) except the lower surface is covered with a rotary cover (19).

Further, the upper end of the rotary cover (19) has a second
As shown in FIG. 3 and FIG. 3, a non-contact type distance sensor (S) is provided, and the sensor (S) is composed of a transmitter, a receiver and a controller. The controller can detect and calculate the time period during which the ultrasonic waves emitted by the receiver and received by the trunk as an obstacle are still received, and the distance between the sensor and the trunk can be detected.

The distance sensor (S) is configured to operate the hydraulic device (15b) of the main beam (15) by the controller to laterally move the rotary tiller (C) in the left-right direction.

Further, the distance sensor (S) has a rotating mechanism (20) at the right end of the main beam (15) of the rotary tiller (C).
The rotation mechanism (20) is arranged so that the direction of the sensor (S) can be freely changed. The structure will be described in detail below.

That is, on the rod (15C) of the main beam (15),
A substantially L-shaped sensor support rod (21) is erected at the right end portion, and a distance sensor (S) is rotatably attached to the horizontal portion of the support rod (21), below the sensor (S). A rotating shaft (22) is vertically provided on the shaft.

In addition, the lower end of the rotating shaft (22) has a rotating mechanism (20).
Pinion (23) is connected, and further the same pinion (23)
The rack (24) of the rotating mechanism (20) is engaged with the.

Moreover, the rack (24) of the rotating mechanism (20) is the third
As shown in the figure, it is formed on the right side of the operating rod (25) extending in the left-right direction, and the operating rod (25) is attached to the machine casing (9).
It extends from the connecting rod (15d) to the right.

With such a structure, when the main beam (15) is moved in the lateral direction, the operating rod (25) is also moved, and the operating rod (2) is moved.
Along with the movement of 5), the distance sensor (S) is adjusted by the rack (24) of the rotation mechanism (20) and the pinion (23).
It is configured to rotate 90 degrees.

In this embodiment, the distance sensor (S) is directed to the side when the rotary tiller (C) is in the neutral state, and is directed to the front when the rotary tiller (C) is moved to the right. There is.

The distance sensor (S) controls a hydraulic device (15b) for laterally moving the rotary tiller (C), and as shown in FIG. 4, the rotary tiller (C) is moved to the right. When moving, the main beam of the cultivating section (C) is moved to the left side based on the distance to the obstacle detected by the distance sensor (S) facing forward and set in advance in the controller to smoothly cultivate. I am trying to do the work.

On the other hand, as shown in FIG. 5, when the rotary tiller (C) is moved to a neutral state, the distance sensor (S) facing the side removes an obstacle on the side of the tiller (C). It is something to detect.

The embodiment of the present invention is configured as described above, and when the main beam (15) of the rotary tiller (C) is moved laterally to perform the tilling work in the orchard, the main beam (15) is used.
When the vehicle is moved to the side, the non-contact type distance sensor (S) attached to the right end of the main beam (15) is directed forward, and the distance sensor (S) facing forward detects the obstacle. First, the main beam (15) is automatically actuated to the other.

Further, in the rotary tiller (C), the rack (24) of the operating rod (25) connected to the main beam (15) and the pinion (23) are interlocked to rotate the distance sensor (S). When the main beam (15) is in a neutral state, the sensor (S) can be changed to face sideways.

Therefore, when the distance sensor (S) is directed to the side, by detecting an obstacle on the side of the rotary tillage part (C), the contact between the tillage part (C) and the obstacle is prevented, It is possible to avoid damage to the rotary case (19) of the tilling section (C).

Further, in the present invention, the agricultural tractor (A) is configured to be capable of changing the vehicle height, and its structure will be described in detail below.

That is, in FIG. 6, the drive shaft (30) extends in the left-right direction at the front part of the agricultural tractor (A), and the front wheel (6) rotates at the tip of the shaft (30). It is installed freely.

At the tip of the drive shaft (30), as shown in FIG. 6, the transmission shaft (31) is interlockingly connected to the lower position of the shaft (30) via output and input gears (30a) (30b). The king pin (33) is interlocked with the transmission shaft (31) via the bevel gears (32a) (32b).

Further, the kingpin (33) has a bevel gear (34a) (3
The axle shaft (35) for mounting the front wheel (6) is interlocked via 4b).

The drive shaft (30) is pivotally supported by the axle case (36), the transmission case (37) of the transmission shaft (31) is attached to the case (36), and the kingpin case (38) is attached to the case (37). ) Are connected.

In addition, the king pin case (38) has a gear case (3
9) is rotatably connected, and the front wheels (6) are steerable.

A knuckle arm (40) is attached to the upper end of the kingpin case (38), and the gear case (39) is rotated by the arm (40).

Further, in such a structure, the transmission case (37) is formed in a substantially O-shaped shape, and the drive shaft (3
The output case at the tip of 0), the input gears (30a) (30b) and the displaced transmission shaft (31) are stored, and the transmission case (3
7) is rotatable up and down with respect to the drive shaft (30) so that the vehicle height of the agricultural tractor (A) can be changed.

That is, the transmission case (37) is the axle case (36).
And the king pin case (38) to each flange (41) (4
It is rotatably joined via 2).

The flanges (41) and (42) are connected by bolts (43) as shown in FIG.

6 and 7, each flange (41) (42) is provided with a semi-arc shaped groove (44) on the joint surface (41a) of one flange (41) and the other flange (42). )
(45) that fits into the groove (44) on the joint surface (42a) of
Is protruding.

Then, as shown in FIG. 6, the front wheel (6) is fixed to the gear case (39) by a fixing pin (46), and the drive case (30) is displaced by the driving force to displace the transmission case (37). The drive shaft (30) is configured to rotate upward and downward.

In addition, each flange (4
The protrusions (45) are guided by the groove (44) to rotate the transmission case (37) 180 degrees.

Further, in the structure of the transmission case (37), as shown in FIGS. 6 and 7, the joined flanges (41) are joined together.
An expansion prevention plate (47) is attached to the (42), and the expansion prevention plate (47) has an annular frame body (47a) formed in a substantially U-shaped cross section.

Then, the expansion prevention plate (47) is fitted to the peripheral edge portions of the flanges (41) (42), and the left and right side walls (47) of the expansion prevention frame (47) are fitted.
b) (47c) is abutted on the outer surface of each flange (41) (42) to prevent the expansion of each flange (41) (42) and to smoothly rotate the transmission case (37). I am configuring.

[Brief description of drawings]

1 is an overall side view of the agricultural tractor of the present invention, FIG. 2 is a plan view of the agricultural tractor of the present invention, FIG. 3 is an explanatory view of a rotary tiller of the present invention, and FIGS. 4 and 5 are rotary. FIG. 6 is a sectional view showing the structure of a front wheel, and FIG. 7 is a sectional view taken along line I-I of FIG. (A): Agricultural tractor (C): Rotary tiller (S): Distance sensor (20): Rotating mechanism

Claims (1)

[Scope of utility model registration request] 1. A rotary tiller (C) having a main beam (15) laterally movable via a lifting link mechanism (1) is attached to a rear part of an agricultural tractor (A), and the beam (15) is also attached. ), A non-contact type distance sensor (S) is rotatably attached to the end of the main beam (15), and a rotation mechanism (20) for operating by lateral movement of the main beam (15) is also provided in the sensor (S).
The sensor (S) is configured to change the detection direction freely, and the sensor (S) detects the distance between the cultivator (C) and the obstacle, and the cultivator is based on the detection result. (C)
A slide control device for a tilling part of a tractor, which is configured to laterally move a main beam (15) of the.