JPS6040373Y2 - Brake pedal on a tractor - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a brake pedal for a tractor.

That is, in the device of the present invention, the hydraulic pedals 10.10 of the hydraulic circuit for raising and lowering the work machine are arranged above the tread plates 8, 9 of the left and right brake pedals 7.7, which are installed in parallel and can be operated separately. In order to enable the working machine to move upward by pressing either of the hydraulic pedals 10.10, and to switch the left and right brake pedals 7.7 between a separate operating state and a simultaneous operating state, a brake pedal is provided. The provided lock metal 14 is configured with a lock portion that can maintain both the hydraulic pedals 10, 10 in a depressed state at the same time, so that bundle operation can be performed reliably with both hands when turning the tractor for work, and the bundle can be operated on the road. At times, the brake pedals are simultaneously activated, and both hydraulic pedals are kept depressed to maintain the work equipment raised, so that work can be carried out safely.

Hereinafter, a description will be given based on an embodiment of the device of the present invention.

Reference numeral 1 denotes a tractor body, which is a normal tractor that includes a prime mover 2, wheels 3, 4, and links 5, 6 to which a working machine (not shown) is attached, and has a built-in hydraulic mechanism (not shown) for raising and lowering the working machine. It is.

As shown in FIG. 3, the brake pedals 7.7 of the machine body 1 are individually arranged on the left and right sides, and a hydraulic pedal 10.10 is protruded from the upper surface of the footplate 8.9.

This hydraulic pedal 10 is normally pushed upward by a spring 12 centered around a support 11 as shown in FIG. A microswitch 13.13 that senses the vertical movement of the hydraulic mechanism 11 is built in, and is configured to operate a solenoid valve or the like when a hydraulic circuit (not shown) in the hydraulic mechanism is opened or closed.

Further, a lock metal 14 is mounted on the upper surface of the footboard 8 so as to be rotatable about a fulcrum 15, and its shape is approximately U-shaped in the lateral direction, and the U-shaped portion engages the hydraulic pedal 10. .1
0 at the depressed position at the same time.

Further, reference numerals 16 and 16 are cables for transmitting electrical signals from the microswitch 15 to operate solenoid valves and the like.

Note that 17 and 18 are stoppers for the lock metal 14.

Next, the operation of the device of the present invention will be explained.

When the tractor body 1 is traveling for work, only the bundle needs to be held securely.

When the aircraft 1 reaches the edge of the field and turns, at the same time as cutting the bundle, lightly place your foot on either the left or right turning side of the brake pedals 8, 9, and the hydraulic pedal 10
goes down in the direction of arrow A, passes the cable 16 through the lower microswitch 13, operates the solenoid valve in the hydraulic circuit, and the work machine rises.

If the brake pedal 8 or 9 is continued to be strongly depressed, the brake pedal 8 or 9 rotates to stop the wheel 4 on the turning side, allowing the wheel 4 to turn easily.

When the brake pedal 8 or 9 is released at the same time as the turning is completed, the hydraulic pedal 10 is pushed up by the spring 12 in the opposite direction of arrow A, and at the same time, the micro switch 15 senses this and switches the hydraulic circuit. Then, the work machine descends and resumes work in a straight line.

In addition, when moving on the road or in the field, use the hydraulic pedal 1.
0.10 at the same time and rotate the lock metal 14 in the direction of the arrow, the hydraulic pedal 10°10 enters inside the U-shape on the side of the lock metal 14 and is fixed.

Therefore, the working machine rises and is held stopped at the top dead center, so the brake pedals 7.7 are connected to the left and right,
The operation is exactly the same as for normal driving.

As explained above, the device of the present invention replaces the hydraulic pedals 10.10 of the hydraulic circuit for raising and lowering the work machine with the upper blades of the tread plates 8, 9 of the left and right brake pedals 7.7, which are installed in parallel and can be operated separately. Hydraulic pedal 10.1
A lock metal 14 provided on the brake pedal is used to enable the working machine to move upward by pressing either one of the brake pedals 7.0 and to switch the left and right brake pedals 7. is the hydraulic pedal 10.1
Since the construction is equipped with a locking part that can maintain the 0 in the depressed state at the same time, when the tractor is turned for work, it is possible to raise the work equipment while reliably operating the bundle with both hands, and brake the wheels in the turning direction at the same time, making it possible to perform turning work. It is very easy and can be done safely.

In addition, the lifting of the working machine alone can be performed by lightly pressing the hydraulic pedal 10, 10 or by fixing it with the locking metal 14, and when driving on the road, the same ease as normal operation can be obtained.

[Brief explanation of the drawing]

The drawings show an integrated embodiment of the device of the present invention, in which Fig. 1 is an overall side view of a tractor equipped with the device of the present invention, Fig. 2 is a side view of a brake pedal, and Fig. 3 is a side view of a tractor equipped with the device of the present invention. FIG. 2 is a plan view of a main part taken from arrow A in the figure. 1...Tractor body, 7...Brake pedal, 8, 9...Treadboard, 10...
Hydraulic pedal, 13...Micro switch, 14
... Lock money, 16 ... Cable.

Claims (1)

[Scope of utility model registration request] Hydraulic pedals 10.10 of a hydraulic circuit for raising and lowering a work machine are respectively disposed on the upper blade portions of left and right brake pedals 7.7 of left and right brake pedals 7.7 which are installed in parallel and can be operated separately. A lock metal 14 is provided on the brake pedal in order to enable the working machine to move upward by pressing either of the brake pedals 7. A brake pedal for a tractor, characterized in that it is constructed with a lock portion that can maintain both the hydraulic pedals 10 and 10 in a depressed state at the same time.