JPS60230521A - Throttle operating mechanism of prime mover - Google Patents

Abstract

PURPOSE:To permit a prime mover to be declerated only when a main clutch is to be cut-off for a long time by interlocking a lever connected to a throttle valve with a throttle operating lever and a main clutch lever and installing a delay throttle operating mechanism into the interlocking mechanism. CONSTITUTION:A lever 19 connected to the throttle valve of a prime mover is interlocked with a throttle operating lever 20 and a main clutch lever 21 for operating a main clutch into ON and OFF, through wires 26 and 28, respectively. A damper 22 and a spring 27 are installed in the middle parts of the wires 26 and 28, and a delay throttle operating mechanism is constituted of these devices. When the main clutch is to be operated into OFF for a long time, a hook 32 is engaged with the hole 33a of an engaging tool 33 by stepping-in a clutch pedal 29. Then, the operating rod of the damper 22 slowly projects, and the spring 27 is extended, and therefore, the prime mover can be decelerated automatically.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a throttle operating device for a prime mover, and conventionally, the throttle valve of the prime mover of an agricultural machine is operated in conjunction with both the main clutch lever and the latch lever to disengage the main clutch. There was a configuration that operated the throttle valve to the low speed side when the main clutch was turned off, but the engine decelerated immediately every time the main clutch was turned off, so be careful each time you turn the main clutch on. There was a drawback that the prime mover would stall unless the main clutch was turned on slowly or the throttle lever was moved to the speed-increasing side in advance and the main clutch was turned off.

The purpose of this invention is to create a practical throttle operating device for a prime mover that reduces fuel consumption and noise by decelerating the prime mover only when the main clutch is operated in the OFF position for a long period of time. .

To achieve this objective, the present invention provides an agricultural working machine in which an agricultural tractor body (1) equipped with a prime mover (4) is appropriately equipped with a working machine Qll, and a lever connected to a throttle valve of the prime mover (4). Ql is interlocked with both the throttle lever installed at the driver's hand and the main clutch lever ■υ that operates the main clutch to turn it on and off, and during this interlocking mechanism, the main clutch lever A throttle operating device for a prime mover in an agricultural machine equipped with a delayed throttle operation mechanism configured to shift the rotation speed of the prime mover (4) to a low speed rotation after a predetermined period of time when the prime mover (4) is operated from the “on” state to the “off” state. By using this configuration, the prime mover is automatically decelerated only when the main clutch is operated in the OFF position for a long period of time, allowing economical fuel consumption and low noise. When turned off, the motor is not decelerated and the rotation of the motor is maintained close to the set state, producing a unique effect that prevents engine stalling.

One embodiment of the present invention will be described in detail based on the drawings. (1) is a towing vehicle body, an engine stand (3) is fixed to the front part of a traveling Minoshiron case (2), and a prime mover is mounted on the engine stand (3). (
4) Fully equipped, front wheels (5), (5) for steering are provided on both left and right sides of the traveling transmission case (2), and a pair of left and right chain cases (6), (6) are provided at the rear to control the rear wheels (
7) , (7) is mounted on an axis.

(8) is the hood, (9) is the control handle, and αO is the control seat.

αυ is a rice transplanter which is an example of a working machine, and the towing vehicle body (1
) is attached to the rear of the machine so that it can be raised and lowered by the lifting link mechanism (2). αTen is a planting mission case, αXun is a seedling tank that moves back and forth from side to side, a9 is a seedling planting tool, Q$,
Qη is a leveling float.

(To) is a spare seedling platform, and the control seat α of the towing vehicle body (1)
They are provided on both the left and right sides of O.

α9 is a lever that is connected to the throttle valve of the prime mover (4) and decelerates or accelerates the prime mover.

The handle is the throttle lever. (2η is when the main clutch (not shown) in the traveling transmission case (2) is
Main clutch lever attached to the shifter shaft that turns off
It is.

The handle is a damper and is a cylindrical body (22a) in which oil is stored.
A ram (C) connected to the operating rod (2) is provided inside, and this ram (goods) is biased by a spring (C) in the direction in which the operating rod (to) is retracted, and is also pulled into the ram (C). A valve (24a) through which oil flows rapidly in the direction and valves (2, 4b) through which oil flows slowly in the protruding direction are provided, and this damper is connected to the lever α field. It is interposed in the middle of the wire (A) that links the throttle lever (E).

, @ is a spring, which connects the lever α9 and the main clutch lever?
The spring tension of the damper (A) is also increased by intervening in the middle of the wire (C) that interlocks the damper (A).

This spring (2) and the damper (A) constitute a delay throttle and operating mechanism.

The wing is a crassochipetal, and is swingably attached to the tip of an arm (7) whose base is attached to the shifter shaft of the main clutch, and protrudes upward from the step base 01).

A hook (2) is integrally fixed to this clutch petal handle, and is detachably provided in a locking hole (38a) of a locking tool (to) provided under the step stand (01).

In the figure, (goods) and (to) indicate the stopper of lever 0I, and ⑼ indicates the change lever.

Next, to explain the function of the upper side, the preliminary seedling mounting table (to) and rice planting 11! After placing and storing the seedlings in the seedling tank α4 of Ql), start the prime mover (4), set and operate the throttle lever appropriately, and do not depress the clutch pedal (A). Then, while propelling the towing vehicle body (1), the rice transplanter 6°C side is also transmitted at the same time.

Then, the soil preparation floats αG and αno on the rice transplanter side float to the soil surface of the paddy field and are pulled, and the seedling planting tool Qυ removes seedlings one by one from the seedling tank (14) that moves back and forth from side to side. Plant by dividing and engaging. When the number of seedlings in the seedling tank (14) is running low and you want to replenish the seedlings in the preliminary seedling stand (to), step on the cranoid petal and attach the hook 02 to the hole (:la) in the locking device (g). The operator maintains the main clutch in the ``off'' position to reliably perform replenishment operations.At this time, the operation rod of the damper (a) only protrudes very slowly, so the spring (a) When the motor (motor) is fully extended, lever a9 is not activated suddenly to the low speed side, and the motor (
4) only slows down slowly.

Then, when the replenishment operation is time-consuming and takes a long time, the prime mover (4) becomes slow.

Furthermore, when replenishment is quick and can be done in a short time, the prime mover (4) does not slow down yet, but only slows down a little. When resuming work, when the clutch pedal is released, oil passes through the valve (24a) side, so the lever (11) quickly returns to the high speed side and the prime mover (
4) The towing vehicle body (1) is smoothly propelled without stalling. When stopped for a long time, the prime mover (4) is naturally decelerated, resulting in less fuel and less noise.

In the embodiment, the delay throttle actuation mechanism is constructed by the bumper blade and the spring (A), but the present invention is not limited to this embodiment, and it is of course possible to use a structure in which the lever 09 is actuated by an electromagnetic solenoid operated by a timer.

[Brief explanation of the drawing]

The figures show an embodiment of the present invention, in which Fig. 1 is a partially cutaway side view of a riding rice transplanter, Fig. 2 is a simplified side view showing the interlocking mechanism, and Fig. 3 is the main part. FIG. Symbols in the figure: (1) is the towing vehicle body, (4) is the prime mover, αυ is the working machine (rice transplanter), α field is the lever, (1) is the throttle lever, and Qυ is the main clutch lever. Patent applicant name: Iseki Agricultural Machinery Co., Ltd. Representative: Akira Takashi Iseki

Claims (1)

[Claims] In an agricultural working machine in which an agricultural towing vehicle body (1) equipped with a prime mover (4) is appropriately equipped with a working machine (Ql), a lever connected to a throttle valve of the prime mover (4) is provided at the operator's hand. It is interlocked with both the throttle lever and the main clutch lever Qυ, which operates the main clutch on and off, and during this interlocking mechanism, the main clutch lever ψη is turned from the on state to the off state. A throttle operating device for a prime mover in an agricultural working machine, which is provided with a delay throttle actuation mechanism configured to shift the rotational speed of the prime mover (4) to a low rotation speed after a predetermined time when the engine is operated.