JPS63125405A - Rear wheel moving device of tractor - Google Patents

Abstract

PURPOSE:To make movement of the rear wheels simple and easy by providing a moving device for moving one of the right and left rear wheels in the axle direction by changing the connecting position with a lift arm between the lift arm for raising and lowering an operating device by oil pressure and the right and left rear wheels. CONSTITUTION:In a tractor, in case, for example, where the left rear wheel is moved inwardly in its axle direction, a chain 22 is provided so that it connects the right side part 21 of a rotary arm 18 in the shape of the letter T which constitutes part of a wheel moving device 8 and a lift arm 3 on the right hand side. The lift arm 3 is raised and rotated in this state, and the rotary arm 18 is rotated in the arrow (a) direction. A ring 26 is pulled inward through a rod 24 by this, and the left wheel 4 is moved inwardly to a axle 6. And in order to move this left rear wheel 4 outwardly, the chain 22 is provided so that it connects the left side part 20 the rotary arm 18 and a lift arm 2 on the left hand side, and the arm 2 is raised and rotated the same as above.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a rear wheel moving device for adjusting the movement of the rear wheels of a tractor.

Prior Art When moving the rear wheels in the direction of the wheel axle, the vehicle body is raised using a jack or the like, and the mounting position of the wheels is moved.

Problems to be Solved by the Invention When a vehicle body becomes larger, not only the vehicle body but also the axle become heavy, making it difficult to move the axle in the axial direction.

Means for Solving the Problems This invention provides lift arms (2) and (3) for hydraulically raising and lowering a working device connected to the rear of a vehicle body (1).

By changing the connection position of the lift arms (2) and (3) between the left and right rear wheels (4) and (5), the left rear wheel (4) or the right rear wheel (5) can be attached to the shaft ( 61 (7
A rear wheel moving device for a tractor is provided with an axle moving device (8) for moving in one direction.

Effects of the Invention When a working device is attached to the rear of the vehicle body (1) of a tractor and a predetermined work is performed, the working device is raised and lowered by vertical movement of the lift arms (2) and (3) using hydraulic pressure.

When moving the wheel (4) or (5) in the direction of the shaft (61, (71), move the wheel between the rear wheel (4) on the side to be moved and the lift arms (2), (3). Device (8)
By connecting the lift arms (2) and (3) with hydraulic pressure, the rear wheels (4) are moved in the direction of the shaft (6) via the axle moving device (8). , the distance between the left and right rear wheels (4) and (5) can be changed.

Effects of the Invention When moving the rear wheels (4), (5) in this way, the lift arms (2), (3) are moved by the wheel moving device (8).
) and the rear wheels (4) and (5), the hydraulic lift arm (2) lifts and lowers one working device.
) and (3), the movement operation can be performed simply and easily.

Embodiment In the illustrated example, the tractor is equipped with a front wheel (9) and an engine (11) at the front of the vehicle body (11), and a rear wheel (4) +51, a driver's seat (10), and a cabin (11) at the rear. ,
PTO axis (link mechanism consisting of top link and lower link 0 to 13° that connects the working equipment, and lift arm f2 that is moved up and down by hydraulic pressure) +31 etc. are provided. 0!9 is a steering handle, (1e is the fuel tank, ((7) is each left and right lift arm (2) (31)
This is a rod that connects the lower link (14) and the lower link (14).

The lift arms (2) and (3) are provided as a pair of left and right at the rear end of the vehicle body (1), and are integrally moved up and down. Further, below the lift arms (2) and (3), a T-shaped rotating arm f11 has a center portion that rotates around an axis (191) in the longitudinal horizontal direction with respect to the rear end surface of the vehicle body (1). The left side (2G) and the right side (211) are provided so as to be freely attachable and detachable, and protrude to the left and right sides of this rotating arm fllll. (3) can be connected to an appropriate length. Also, the lower side opening of this rotating arm (11) that protrudes downward can be connected to
a rear wheel (4) located at the same height as the axles (6) and (7), connected to one end of the rod C4, and provided slidably in the axial direction with respect to the axles (6) and (7); The other end of the rod 24 is connected to the ear part (5) of the ring e which is rotatably fitted to the boss part (29) of (5), and these rotary arms, rod r241, etc. are detachable. As, wheel moving device (8)
It consists of

A pin hole is provided in the rear wheel +41 (boss part C'S of 51), and a pin +2'J inserted from the boss part is connected to the pin hole c!l provided at appropriate intervals on the shaft f61 (71). At the same time, when moving the wheel (41 (51) position with respect to the shaft (61 (7)). Lift arm f21 (31, and wheel T4 (5) by wheel moving device (8), etc.), use this pin. Remove 4.

When moving the left wheel (4) inward, connect the chain Q3 between the rotation arm (right side Q1 of Ill) and the right lift arm (C) as shown in Figure 1. By the upward rotation of the lift arm (3), the first rotation arm (II) is rotated in the direction of the arrow, and the ring I2e is rotated via the rod 24.
is pulled inward to move the wheel (4) inward relative to the shaft (6) (Fig. 2). In addition, when moving this wheel (4) outward in the opposite direction, connect the chain Q3 between the left side of the rotating arm f11 and the left lift arm (2), and move this lift in the same way. When arm (2) is rotated upward,
The rotating arm ++e is rotated in the opposite direction of the arrow (A), and the axle (4) is moved outward.

Also, when moving the right axle (5), the tip of the rod 120 may be connected to the ring (5) of this wheel (5) in the same manner.

In the case where the ring (29) is rotatably fitted to the boss part (c), the axles (4), (5) are connected to the axles (6), (
The axles (4) and (5) can be moved in the axial direction even when the axles (4) and (7) are rotated together with the axles (4) and (7) or are rotatable relative to the axles (6) and (7). Also, this wheel moving device (8)
The tip of the rod (241) may not be connected to the ring Ce, but may simply be engaged with a groove formed on the outer peripheral surface of the wheel side surface or the boss.
When moving the 1+51, it is a good idea to remove the link mechanism and working equipment.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; FIG. 1 is a partial rear view, FIG. 2 is an operational view, FIG. 3 is a rear view, and FIG. 4 is a side view. In the figure, reference numeral (1) indicates the vehicle body, (2) and (3) indicate the lift arm, (4) and (5) indicate the rear wheels, (61+71 indicates the shaft, and (8) indicates the axle moving device.

Claims (1)

[Claims] This lift arm (2) (3) is installed between the lift arm (2) (3) for hydraulically raising and lowering the working device connected to the rear of the vehicle body (1) and the left and right rear wheels (4) (5). )
By changing the connection position with the left rear wheel (4)
Or a rear wheel moving device for a tractor, which is provided with a wheel moving device (8) that moves the right rear wheel (5) in the direction of the axes (6) and (7).