JPH0213318A - Driving apparatus for mobile farm-working machine - Google Patents

Abstract

PURPOSE:To stabilize the running of the subject machine at a fixed position by keeping the lateral horizontal posture of a working apparatus by the control of a rolling cylinder and fixing the extension of the rolling cylinder with a fixing apparatus at the same position of the driving wheel. CONSTITUTION:A machine body is driven by a pair of right and left driving wheels 1, 2 and the farm work is performed with a working apparatus 3. In the above process, the inclination of the machine body caused by the change in the furrow pan of the running soil surface is detected by a rolling sensor and a rolling cylinder 4 is extended or contracted according to the detected signal to cause relative vertical displacement of the right and left driving wheels 1, 2 and keep the working apparatus 3 in laterally horizontal posture. On the other hand, the running at a fixed position can be stabilized by adjusting the right and left wheels 1, 2 at the same position and fixing the extension and the contraction of the rolling cylinder 4 by energizing a fixing apparatus 5. The fixing effect is remarkable in the case of running on a road or transporting the machine with a truck, etc.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a traveling device for a mobile agricultural machine, and can be used in a seedling planting machine, a tractor cultivating device, and the like.

Problems to be Solved by the Prior Art and the Invention In a seedling transplanter, when the m body rolls from side to side due to changes in the depth of the soil tiller, etc., the seedling planting depth in the seedling planting device changes. A pair of left and right running wheels are moved up and down relative to each other to control and hold the working device horizontally. But this soil! Jl? ! In places where there is a significant change in the depth and depth of l, if this is detected and rolling control is performed, the rolling control will be delayed and it will be difficult to perform smooth control.
2) The rolling cylinder itself that performs relative vertical movement,
A fixing device is provided to fix this expansion and contraction to fix rolling control.

Means for Solving the Problems The present invention provides a hydraulic rolling system that controls a pair of left and right running wheels (1) and (2) to relatively move one step downward to maintain the left and right horizontal posture of a working device (3). Cylinder (4)
There is a fixing device 'J!' that can fix the expansion and contraction of this rolling cylinder (4) at the same position on the left and right running wheels (1) and (2). 1(5) is provided for a traveling device of a mobile agricultural machine.

Functions and Effects of the Invention The machine is propelled by a pair of left and right running wheels (1) and (2) while work is carried out by the working device (3).Due to changes in the running soil surface, such as a tiller, etc. When tilted,
The rolling cylinder (4) is controlled to expand or contract by detecting this tilted state using a rolling sensor or the like. By expanding and contracting this rolling cylinder (4), the left and right running wheels (1)
(2) are relatively moved up and down, and the working device (3) is placed in a horizontal horizontal position.

When fixing to prevent such rolling control, place the left and right running wheels (1) and (2) in the same position and operate the fixing device (5) to allow the rolling cylinder (4) to expand and contract. It is fixed in a state where it cannot be used.

In this way, the vertical movement between the pair of left and right running wheels (1) and (2) is fixed by the fixing device (5) of the rolling cylinder (4) so as not to expand or contract. ) (2) is fixed at the same position, this posture does not change, and the fixed position traveling can be stabilized regardless of the detection of the rolling sensor or the operation of the rolling control valve. Furthermore, when traveling on the road or when being carried on a truck or the like, this effect can be exerted and a stable horizontal posture can be maintained. Furthermore, it is possible to easily confirm the left and right parallel postures of the left and right running wheels (1) and (2) with respect to the vehicle body.

Embodiment In Figs. 1 and 2 on the ward side, the seedling transplanter has a wheel transmission case that is movable up and down about the transmission shaft (7) on both sides of the front left and right sides of the vehicle body (6) along the front-rear direction. (8) is provided, and the running wheels (1) and (2) are installed at the tip of this wheel transmission case (8).
It is equipped with a shaft so that it can be rotated by transmission. In addition, an engine (9) is mounted on the front end of the vehicle body (6), and each running wheel (1) (
2) and the rear working device (3), which is a seedling planting device, are configured to be powered. The seedling planting device consists of a seedling tank (10) that accommodates seedlings and moves back and forth from side to side, and a seedling planting device (11) that separates and plants the W delivered from this l'lT tank (10). A control handle (12) is provided at the top. Further, a float (13) is provided along the lower side of the vehicle body (6) to level out the seedling planting position by the seedling planting device (11).

A pitching cylinder (14) that expands and contracts in the front-rear direction by the hydraulic pressure of the hydraulic circuit is provided on the front part of the vehicle body (6). The left end of this pitching arm (16) connects the rolling cylinder (4) with the arm (17) at the base of the wheel transmission case (8) on the running wheel (1) side. The left end of the pitching arm (16) is connected to the arm (18) at the base of the wheel transmission case (8) on the running wheel (2) side. 17) with a rod (19).

The float (13) is attached to the rear of the vehicle body (6) near the seedling planting area.
) by swinging the front part in the vertical direction as a swing shaft (20), the pitching control valve (21) is switched, and the pitching cylinder (14) is controlled to expand and contract, thereby controlling the left and right running wheels (1 ) and (2) at the same time to change the vertical position relative to the vehicle body (6), and move the vehicle body (
6) Control the height.

The rolling control device is provided with a rolling sensor (33) that detects the left and right inclination of the vehicle body (6), and switches the control valve of the rolling cylinder (4) by detecting the inclination of the vehicle body (6) by the rolling sensor (33). , expands and contracts this rolling cylinder (4). When this rolling cylinder (4) extends, the left running wheel (1) is pushed upward and the right running wheel (2) is about to be pushed downward. )(2) changes, the supporting force on the left running wheel (1) side becomes smaller, and the vehicle body (6) begins to roll to the left.

Also, when the rolling cylinder (4) is shortened, it acts in the opposite direction and rolls to the right.

The rolling cylinder of such a rolling control device (
A lock pin (22) is provided on the side of the piston (1).
8) on the side of the control handle (12).
) A lock arm (25) that is moved up and down via a wire (24) is pivoted (2B) L, and the engagement f'1l (27) of this lock arm (25) is connected to the lock bin (22). By engaging with the pistons (34), the pistons (34) are prevented from moving in and out of the rolling cylinders (4). The fixed position of this rolling cylinder (4) is when the left and right running wheels (1) and (2) are in the same position with respect to the vehicle body (6), that is, in a position parallel to the left and right with respect to the vehicle body (6). can.

In Figures 3 to 5, the difference from the upper side is that the number of planting rows of the seedling planting device is increased, and a side flow (2B) is provided on the outside of the flow (13) so as to be able to swing vertically. The rolling sensor (33) is in the form of a pendulum that swings from side to side, and the pitching arm (16) is replaced by a piston (15).
This sliding boss (29
) Rolling 7 rotatably pivoted (32)
- A rolling cylinder (4), a piston (18) and a fixing device (5) are provided between this rolling arm (30) and the wheel transmission case (8) on the right running wheel (2) side. etc., and are connected to the wheel transmission case (8) on the left running wheel (1) side by a rod (31).

By expansion and contraction of the rolling cylinder (4).

The rolling arm (30) rotates around the pivot portion (32) to vertically move the left and right running wheels (1) and (2) in a seesaw manner.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is a partially sectional plan view, Fig. 2 is a side view, Fig. 3 is a plan view of another embodiment, and Fig. 4 is a side view thereof. FIG. 5 is a partially enlarged side view. In the figure, symbols (1) and (2) are running wheels, (3) is a working device, (4) is a rolling cylinder, and (5) is a fixed ? C position is shown.

Claims (1)

[Claims] This rolling cylinder (4) is connected to a hydraulically operated rolling cylinder (4) that controls the pair of left and right running wheels (1) and (2) to move up and down relative to each other to maintain the left and right horizontal posture of the working device (3). The left and right running wheels (1)
A traveling device for a mobile agricultural machine comprising a fixing device (5) that can be fixed at the same position as (2).