JP2000043662A - Roll-over protective structure for tractor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a working machine from coming into contact with a roll- over protective structure for prevention of damage to them. SOLUTION: This tractor involving a derrickable roll-over protective structure 4 between the rear part of an operator's seat 2 of a vehicle body 1 and a working machine 3 connected to the rear side of the vehicle body 1, wherein a position lever 5 vertically-operating a lift arm 6 connected to the working machine 3 is formed so that a restraining arm 27 may be interlocked through a rod 29 by the rearward inclination of the roll-over protective structure 4 to restrain the position lever 5 from operating upwards by more than a prescribed amount.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tractor rope.

[0002]

Conventionally, in a configuration in which the lops provided at the rear upper part of the cockpit fall backward, when the working machine connected to the rear of the vehicle body is lifted, the working machine collides with the rearwardly moving lops. And both may be damaged.

[0003]

SUMMARY OF THE INVENTION In view of the above-mentioned problems, the present invention provides a tractor with a rope as follows. That is, a lops 4 that can be raised and lowered between a rear portion of the cockpit 2 of the vehicle body 1 and a work machine 3 connected to the rear side of the vehicle body 1, and a position lever 5 that vertically moves a lift arm 6 connected to the work machine 3. Are the tractor lops that are interlocked so as to restrain the upward movement of the position lever 5 by a predetermined amount or more when the lops 4 is retracted.

[0004]

The ropes 4 stand up behind the cockpit 2
Work is performed by a working machine 3 connected to the rear of the vehicle body 1, and the working machine 3 can be moved up and down by operating a position lever 5 to move a lift arm 6 up and down. Further, when the ropes 4 are not required, they can fall down to the rear of the cockpit 2 so that they do not obstruct storage or the like.

When the work implement 3 is connected to the rear part of the tractor body 1 and the ropes 4 fall down on the rear side, even if the work implement 3 is raised by the operation of the position lever 5, the lift arm 6 Work motion 3 is not lifted because the upward movement of a predetermined amount or more is suppressed. For this reason, contact between the working machine and the ropes can be prevented, and damage to both can be prevented.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION A tractor body 1 has a front wheel 8 steered by operating a steering handle 7 and a rear wheel 11 below a fender 9 on the outer side of the cockpit 2 mounted under a front hood 10. The vehicle is driven in a four-wheel drive mode by driving the engine E. A lift arm 6 which is moved up and down by hydraulic pressure is provided on the rear side of the cockpit 2 so that a work implement 3 such as a rotary tilling device connected to a hitch 12 on the rear side of the vehicle body 1 can be moved up and down.

A battery 50, a water tank 33 described later, and the like are provided inside the hood 10 in front of the engine E. As shown in FIG. 4, the battery 50 of the tractor is provided with a battery base 49 that can rotate back and forth in the radiator room in front of the radiator 48 below the bonnet 10, The battery 50 to be mounted is moved back and forth. Thereby, the battery 50 and the radiator 4
8 to facilitate cleaning.

The ropes 4 are located at the rear side of the cockpit 2
It is formed in a gate shape when viewed from the front, and the left and right sides are attached to and supported by both ends of the connected horizontal frame 15 from the rear axle housing 13 to the upper ends of the left and right rope support frames 14 erected. A bracket 16 is provided on a lateral end of the horizontal frame 15, and a bracket 17 fixed to the ropes 4 side is connected to the bracket 16 by an undulating shaft 18, and the lops 4 is raised and lowered around the undulating shaft 18 in the front-rear direction. It is rotatable.

Around this undulating shaft 18, a bracket 17 is provided.
A pin hole 19 is provided on the bracket 16 side and two pin holes 20 and 21 are provided on the bracket 16 side at the front and rear, and the lock pin 22 is connected to the pin hole of the bracket 17 when the lops 4 is in the upright state A. 19 and the pin hole 20 of the bracket 16, and the lock pin 22
Is replaced over the pin holes 19 and 21 so that the postures A and B
Is fixed.

When working with the working machine 3 connected to the rear side of the tractor body 1, the lops 4 is in the upright state A, and when not working, it is in the lying down state B so as not to obstruct storage or the like. The position lever 5 is located on one side of the cockpit 2
This position lever 5 is pivotally supported by a position shaft 23.
Is detected by a potentiometer, and a hydraulic control valve of a hydraulic circuit for vertically moving the lift arm 6 is operated to raise and lower the lift arm 6. The lift arm 6 can be raised and lowered in accordance with each operation position from the lowermost position L of the position lever 5 to the restraint position M and the uppermost position H.

The position lever 5 is provided with an operating piece 24, which can be turned by contacting a bracket 25 on the upper part of the vehicle body 1 with an arm pin 26 to contact a pivoting support arm 27.
A rod 2 is connected between the restraining arm 27 and an arm 28 protrudingly connected to the bracket 17 at the lower end of the left and right lops 4.
Connect at 9. Loop state 4 with Loops 4 falling backward
In this case, the restraint arm 27 is rotated to the restraint position b, and the operation piece 24 of the position lever 5 is engaged at the restraint position M so that the operation to the uppermost position H is not performed. Cut off. For this reason, the lift arm 6 and the work implement 3 due to the lift arm 6 are not raised above the restraint position.

When the ropes 4 are in the standing state A,
The restraint arm 27 is rotated to the non-restraint position a, and no restraint is performed even at the uppermost position H of the position lever 5. FIG.
In the following, the fender 9 of the tractor will be described.
A fountain nozzle 30 is provided below the fender 9 to cover the rear wheel 11.
Is provided, and from a water tank 33 provided on a front axle bracket 32 at the front of the vehicle body 1,
Water is supplied by a pump 34 and a pipe 35, and each fountain nozzle 30
From the rear wheel 11 to facilitate removal of mud adhering to the rear wheel 11.

Referring to FIG. 5, the working machine 3 will be described. The working machine 3 is provided with a water supply pipe 38 which can be injected into the lower surface of the rear cover 37 through a fountain hole 45 on the upper surface of the rear cover 37 connected to the rear part of the cultivation cover 36. ,
This is to make it easier for mud adhering to the rear cover 37 to fall off. 39 is a tilling transmission case, 40 is a rotary tilling shaft having a tilling claw 41, 42 is a flat plate provided at the rear end of the rear cover 37, and 43 is a lower tooth.

The pipe 38 is connected to a pump 34 on the vehicle body 1 side by a hose 44, and pressurized water is sent. A fountain hole 45 for water injection over the water supply pipe 38 and the rear cover 37.
Is formed and can be fountain downward. 46 is the rear cover 3
7 is an absorber capable of lowering the pressure on the till cover 36. Reference numeral 47 denotes an absorber capable of lowering the flat plate 42 against the rear cover 37.

[Brief description of the drawings]

FIG. 1 is a side view of a rope support.

FIG. 2 is a rear view thereof.

FIG. 3 is a side view of the tractor.

FIG. 4 is a perspective view of a battery unit mounted on the tractor.

FIG. 5 is a side view showing the work machine, a rear view of a part thereof, and a cross-sectional view.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Body 2 Cockpit 3 Work implement 4 Lops 5 Position lever 6 Lift arm

Claims (1)

[Claims] A lops (4) that can be raised and lowered between a rear portion of a cockpit (2) of a vehicle body (1) and a work machine (3) connected to a rear side of the vehicle body (1).
And a position lever 5 for vertically operating the lift arm 6 connected to the work implement 3, and a tractor that is interlocked with the tractor so that the upward movement of the position lever 5 by a predetermined amount or more is suppressed when the ropes 4 are retracted. Lops.