JPS6018457A - Traveling gear wheel tilting device - Google Patents

Abstract

PURPOSE:To facilitate the turning operation of a vehicle such as a single-wheel rice planting machine, by coupling the axle of the vehicle with the power transmission in such a way of rotatable in the vertical direction, and by providing this coupling part with a driver device to rotate the axle vertically according to necessity. CONSTITUTION:A chain case 11, whose base is pivoted to the side face of the transmission case, is extended outward, and the wheel is borne through a joint part 13 provided with a wheel tilting device 12 at the rear part of this chain case 11. Said wheel tilting device 12 has an oil-hydraulic cylinder 41 pivoted on a prop 43 protruding upward from the axle case 45, and the tip of a piston rod 42 is fixed rotatably to a prop 44 fastened to the joint case 38. When the vehicle is turning to the right, the wheel 14 can be tilted to the right using a control lever by controlling a value 49 through a wire, by contracting the cylinder 41 oil-hydraulically, and thereby drawing up the axle case 45 round a pin 39.

Description

[Detailed description of the invention] The present invention relates to a wheel tilting device for a one-wheel rice transplanter or the like.

When turning a one-wheeled walking rice transplanter, it was necessary to tilt the machine toward the turning side using the control base or the force of one's own arm, which was difficult and required a great deal of effort. The object of the present invention is to provide a wheel tilting device for facilitating the turning operation of a one-wheel type rice transplanter. , an axle of a traveling device such as a one-wheeled rice transplanter is connected to a transmission device that transmits power to the axle so as to be rotatable in the vertical direction,
The vehicle is characterized in that the connecting portion is provided with a drive device that rotates the axle in the vertical direction as required. Hereinafter, a detailed description will be given based on the embodiments shown in the drawings.

Figure '51 is a side view of a one-wheel walking rice transplanter equipped with a wheel tilting device according to the present invention, Figure 2 is a plan view thereof, and Figures 3 and 4 are an enlarged pressure view and top view of the main parts. , FIG. 5 is a plan sectional view, and FIG. 6 is an explanatory diagram of the operation. rice transplanter l
is made up of a front power section 2 and a rear planting section 3 connected by a frame 4, and the power section 2 has a central float 5 connected to a telescopic link 5.
a, 5b, and a pair of left and right side floats 6.6 are attached to the lower surface of the planting section 3, the rear portions of which are pivotally connected (P) to the transmission case described later, and the front portions of which are attached to the long support 6a. It is attached to the frame 4 in a freely movable manner.

The power unit 2 is provided with an engine 7, a fuel tank 8, a transmission case 9, and a hydraulic pump 10, and a chain case 11 whose base is pivoted to the side surface of the mission case 9 extends rearward. . A wheel 14 is pivotally supported at the rear of the chain case 11 via a joint portion 13 provided with a tilting device 12.

The transmission case 17, which also serves as the machine frame of the planting section 3, has a J
A pair of left and right handles 1 that protrude rearward from the bottom of the case
8.18 is provided, and in front of it is provided along the handle 18 a slanted handle 19 whose rear end is in the ``-'' position. The +'/i tank 9 is supported so as to be movable left and right, and is reciprocated by power transmitted from the power unit 2 to the transmission device in the transmission case 17 via the transmission shaft in the frame 4. Also, during the planting work, the planting tool 20 swings downward in an elliptical orbit, and plants one plant at a time into the soil, which is supplied from the tank 11.

The structure of joint r:++ 13 is shown in FIG. One end of the primary support 22 is accessed by a key 25 to the driven sprocket 24 of the main shaft 23, and a flange 26 is attached to the other end by a key 27. Further, the secondary axis 29 that is integral with the profit margin 14 is the -order axis 2
The primary shaft 22 is connected to the flange 26 through a capole joint 3o at its end on the primary shaft 22 side. At the pole joint 3°, the core 32 and the casing 33 are in contact with each other on a spherical surface.
Although the secondary i29 can rotate in the direction perpendicular to the plane of the paper in FIG. It is configured as follows. Casing 33 is Porto 35
It is fixed to the flange 26 by. The secondary side joint case 37 is attached to the primary side joint case 38 fixed to the chain case 11 by pins 39 and 39, and is integrally moved up and down with the secondary shaft 29 around the pin 39 (see Fig. 5). (perpendicular to the paper surface). 4o is a flexible cover.

The wheel tilting device 12 is composed of a hydraulic cylinder 41, which is a driving device for rotating an axle, a piston rod 42 protruding from the cylinder, and struts 43 and 44. The hydraulic cylinder 41 is pivotally connected to a support 43 projecting upward from the axle case 45, and the flat tip 42a of the piston rod 42 is connected to the edge 38 of the primary joint case 38.
A and J are rotatably mounted on a support post 44 fixed to a. Hydraulic valve 49 that operates hydraulic cylinder 41
is connected by a wire 47 to a shaft 46 attached near the grip 18a of the handle 18, so that the hydraulic oil sent from the hydraulic pump 10 can be switched and supplied to the hydraulic cylinder 41. It has become.

The middle part of the chain case 11 is connected to the frame 4 by a hydraulic cylinder 50, and by expanding and contracting the hydraulic cylinder 50, the chain case 11 is moved to 1F.
It can be moved down -L together with the wheel 14. The operating lever 51a of the hydraulic valve 51 that supplies hydraulic oil to the hydraulic cylinder 50 is connected to the central float 5 via a rotating piece 52 and rods 53 and 54, which are pivotally connected to the frame 4 by a pin 52a. When the ground pressure of the float 5 increases, rotate the chain case ll downwards and remove the wheel 14.
The hydraulic cylinder 50 is expanded and contracted in the direction of lowering the chain case 11, and conversely in the direction of rotating the chain case 11 in the j-direction when the ground pressure decreases. Note that the rod 56 that engages with the elongated hole 52b of the rotating piece 52 is connected to the wire 5.
7 to the lever 59, and the return spring 60
By pulling the rod 56 against this, the rotating piece 52 can be rotated clockwise in FIG. 1, and the wheel can be lowered.

When this one-wheel rice transplanter 1 is running straight, the wheels 14 are kept perpendicular to the ground, but when turning, the eleven wheels 14 can be tilted in the lateral direction of the machine by operating the lever 46. That is, when turning to the right, when the valve 49 is operated using the lever 46 so that the piston rod 42 is pulled into the hydraulic cylinder 41, the secondary shaft 29, together with the secondary side joint case 37 and the axle case 45, moves the pin 39. The wheel l4 is pulled upward as a center of rotation, and the wheel l4 is tilted to the right. Since the center of gravity of the aircraft body shifts to the right side of the grounding point M of the wheels 14, the above operation allows a smooth right turn. Conversely, in the case of a left turn, if the lever 46 is operated in the direction in which the piston rod 42 is projected from the hydraulic cylinder 41, the secondary shaft 29 will rotate downward around the pin 39, and the wheel will move to the left. It is tilted.

At this time, the center of gravity of the aircraft moves to the left of the grounding point N, so it is possible to smoothly turn left. In the illustrated example, a rice transplanter of a type in which power is transmitted by a chino in a chino case 11 is used, but the same applies to a rice transplanter of a type in which rotary power is transmitted by a transmission shaft.

As explained above, since the wheel tilting device according to the present invention can tilt the wheels in a desired direction when turning a one-wheeled walking rice transplanter, etc., a traveling device equipped with this device can It becomes extremely easy to move around, reduces the labor burden on the operator, and allows even relatively weak workers to operate it. It goes without saying that this wheel tilting device can be used for traveling devices other than rice transplanters.

[Brief explanation of drawings]

Fig. 1 is a side view of a one-wheel walking rice transplanter equipped with a wheel tilting device according to the present invention, Fig. 2 is a plan view thereof, and Figs. 3 and 4 are enlarged front and top views of main parts. , FIG. 5 is a plan sectional view, and FIG. 6 is an explanatory diagram of the operation. l...1 wheel type walking rice transplanter, 4 river frame, 5,6...
・Float, 7... Engine, 9... Mission case, 10... Hydraulic pump, 11... Cheno case, 12... Tilting device, 13... Joint part, 14
...Wheel, 18...Handle, 19...Bacteria tank, 22...-Secondary shaft, 29...Secondary shaft, 3o...Pole joint, 34...Ball, 39... ...Pin, 41
・... Hydraulic cylinder, 42... Piston rod,
43.44...Strut, 46...Lever, 49...
valve. Patent applicant: Iseki Agricultural Machinery Co., Ltd. Agent: Hiroshi Sugawara, patent attorney

Claims (1)

[Claims] (1) Connect the axle of a traveling device such as a one-wheeled rice transplanter to a transmission device that transmits power to the axle so that it can rotate in the vertical direction, and connect the axle to the connection part as needed below -L. What is claimed is: 1. A wheel tilting device for a traveling device, characterized in that it is provided with a drive device that rotates the wheels in a direction.