JPH0268227A - Running pedal for tractor and the like - Google Patents

Abstract

PURPOSE:To smoothly shift actuation to continuous acceleration and/or deceleration by locking both a forward and a reverse pedal at the depressing positions of both of the pedals as to make the running speed constant, and thereby concurrently providing a locking device which release the lock of both of the pedals themselves. CONSTITUTION:Depressing a par of a right and a left pedal; a forward pedal F and a reverse pedal R in front of a driver's seat from a neutral position makes each of them capable of accelerating a vehicle in the forward/reverse directions. And the front side peripheries of both of the pedals are formed with racks 9 and 10 in a saw tooth form, and the lower end section locking peripheries 16 and 17 of freely rotating locking pedals 14 and 15 are engaged with the racks so that a locking device 1 is provided which locks the return of both of the pedals F and R to a neutral position. This constitution allows the locking device 1 to be actuated so as to let both of the pedals at the depressing position for running the locked in movement when forward running speeds or reverse running speeds are to be kept constant on. In addition, when the lock of both of the pedals is to be released, depressing either of the pedals furthermore beyond the locking position allows the lock by the locking device 1 to be released.

Description

[Detailed description of the invention] Industrial applications The present invention relates to a running pedal for a tractor or the like.

Background Art and Problems to be Solved by the Invention In the case of a traveling pedal for a tractor having a forward traveling pedal for forward traveling operation and a reverse traveling pedal for reverse traveling operation, it is necessary to lock the depressed position of each forward traveling pedal and reverse traveling pedal. If a locking device is provided, it is troublesome because each operation for releasing the locking device must be performed separately.

Means for Solving the Problems This invention provides a forward pedal (F) that increases forward speed when the pedal is pressed from a neutral position, and a reverse pedal (R) that increases backward speed by pressing the pedal from a neutral position. The running speed is fixed by locking the appropriate depression position of R), and when either pedal (F) or (R) is depressed from this fixed position, both of these pedals (F) and (R) themselves are unfixed. A traveling pedal such as a tractor is provided with a locking device M(1).

Functions and Effects of the Invention When the tractor is running, when the forward pedal (F) is depressed from the neutral position, the forward traveling speed increases in accordance with the amount of depression, and when the pedal is loosened, it becomes slower. or.

Release it from the forward petal (F) and return it to the neutral position.

When the reverse pedal (R) is depressed from the neutral position, the reverse speed can be increased or decreased depending on the amount of depression, and the vehicle can freely travel forward, reverse, or stop traveling.

When maintaining and fixing these forward running speeds or reverse running speeds, operate the locking device (1) to fix the movement of the forward pedal (F) or reverse pedal (R) in the depressed running position. . As a result, the forward petal (F) or the reverse petal (R) is locked and fixed from returning to the neutral position, so even if you release your foot from each petal (F) or (R), the forward speed remains unchanged.
Or the reverse speed is maintained constant.

When releasing the fixation of the forward pedal (F) or the reverse pedal (R) by such a locking device (1).

Forward petal (F) or reverse petal (R) on either side
) from the current fixed position. By this depressing operation, the locking device (1) locks each forward pedal (F).
And the fixing can be released by being operated from the locking/fixing position with the reverse petal (R) to the locking/releasing position.

In this way, when either the forward pedal (F) or the reverse pedal (R) is fixed at the depressed operation position, to release this fixation, either the forward pedal (F) or the reverse pedal (R) must be pressed. Or one.

By stepping further from this fixed position, the locking and fixing of the locking device (1) can be released, and the operation can be performed quickly and without error, and this locking device w (
From the lock release position of 1), press the same pedal (F) or (
Since the speed can be increased by depressing R) more deeply, and the deceleration can be achieved by loosening the depressing button, a smooth transition to continuous acceleration/deceleration operation can be achieved.

Embodiment In addition, in the rotation, the traveling transmission device (2) of the tractor is provided with a hydraulic continuously variable transmission device (3) as a main transmission device,
By rotating the speed change control shaft (4) of this hydraulic continuously variable transmission (3) and the control arm (5) fixed thereto, forward and backward speed change can be performed. Normal neutral position i1 (
N), no power is transmitted to the traveling transmission N(2), but this neutral position! (N) to control arm (5)
When the control arm (5) is rotated toward the forward position (A), the forward travel speed is transmitted in accordance with this rotation angle, resulting in a sequential high-speed shift, and conversely, the forward travel speed is increased to return this control arm (5) to the neutral position (N). is decelerated and stops at the neutral position (N). The same applies when controlling the control arm (5) from the neutral position (N) to the reverse position (B), and in this case, reverse transmission is performed. The control shaft (4) is always urged to return to the neutral position (N).

A pair of left and right forward movement pedals are installed on the floor in front of the cockpit (
F) and reverse pedal (R) are located on the petal shaft (6) under the floor.
) is rotatably supported around the forward petal (F
) is the upper position of the petal shaft (6) and the control arm (5).
Connect with the interlocking rod (7).

By depressing this forward pedal (F), the control arm (5)
is rotated to the forward position (A). Also, reverse petal (
R) is the lower position of the petal axis +61 and the control arm (5
) are connected by an interlocking rod (8), and when the reverse pedal (R) is depressed, the control arm (5) is rotationally interlocked to the reverse position (B). These two interlocking rondos (7) 181
The connection position to the control arm (5) is the forward petal (F)
The rotation angle of the control arm (5) when the pedal is pressed.

The distance between the interlocking rond (7) side and the speed change control shaft (4) is shortened so that the rotation angle is wider than the rotation angle when the reverse pedal (R) is depressed.

Regarding the locking device M (1), the forward pedal (F) and the reverse pedal (R) have a serrated rack (9)0[I
The lock petal o4 (19 has an upper end locking edge Oe, ( 9), 0[ can be locked to prevent the forward petal (F) or the reverse petal (R) from returning to the neutral position.
A spring Oe is provided between the lock petal (b) tl'
Guide j into the long hole 0no, and insert the locking edge (old (5)) into the petal (
F) The structure is such that it is always pulled toward the (R) side. Also, the spring (
The seagull has each lock petal (to) (19 locking edges 0e (5)
is provided by pulling it so as to rotate it forward from the petals (F) and (R).

When the lock petal (to) is depressed from the position (to) to (c) at the appropriate position where the forward pedal (F) is depressed, this lock petal (b) resists the spring (to) and moves to the pin (13). rotated around and locked by the spring (old tension 9FIQ)
is locked to the rack (9). Therefore, the rack (9) of this forward pedal (F) is locked to the locking edge the.

The forward pedal is trying to move upward from the depressed position to the neutral position (
The return of F) is fixed, and even if this lock pedal (B) is attempted to be disengaged by the tension of the spring (FJ), this locking edge (IQ) cannot be disengaged from the engagement with the rack (9), so it will not return naturally. The lock pedal (+'j) of the reverse pedal (R) will not be released.
The same applies to fixing by.

To release the forward pedal (F) from being fixed by such a locking device (1), slightly depress the forward pedal (F) or the reverse pedal (R) from the fixed position, but the forward pedal (F) When you press the button, the rack (
9) The lock pedal (to) that is locked is in position N (c)
It is unlocked by rotating from to (to). Also, when the reverse pedal (R) is depressed, the forward pedal (F) is activated via the interlocking rod (8), control arm (5), interlocking rod (7), etc. It is rotated to the opposite upper side.

Also, at this time, the lock pedal ■ in the locking position (c) is rotated to (d) and (e) against the spring (Fl), and this rotation is in the opposite direction to the locking direction. , this forward pedal (
Do not interfere with F) returning to the neutral position.

[Brief explanation of the drawing]

The figures show one embodiment of the present invention, with FIG. 1 being a partial perspective view and FIG. 2 being a side view showing the operation. In the figure, the symbol (11 is a locking device, (F) is a forward pedal,
(R) indicates the reverse pedal.

Claims (1)

[Claims] A forward pedal that increases forward speed by pressing the pedal from the neutral position (
F) and the reverse pedal (R) that increases reverse speed, the forward pedal (F) and the reverse pedal (R) are locked at appropriate depression positions to fix the traveling speed, and from this fixed position A traveling pedal for a tractor or the like, which is provided with a locking device (1) that releases the fixation of both the pedals (F) and (R) even if the pedals (F) and (R) are stepped on.