JP2594175Y2 - Engine control equipment for mobile agricultural machines - Google Patents

Description

[Detailed description of the invention]

[0001] The present invention relates to an engine control device mounted on a mobile agricultural machine such as a combine or a binder. In particular, a rotation adjustment mechanism for varying the rotation speed of an engine is controlled by both a control lever and a foot pedal via an adjustment cable. The present invention relates to an engine control device.

[Industrial applications]

[0002]

2. Description of the Related Art Conventionally, a control device for adjusting an engine rotation speed of a mobile agricultural machine such as a combine or a binder includes:
A control lever for manual operation provided on the side of the steering and a foot pedal for stepping operation provided on the floor of the driver's seat are connected to a link mechanism, and the link mechanism is used to control rotation of the engine. A mechanism configured to be connected to a mechanism via an adjustment cable has been proposed. (Japanese Utility Model Application No. 62-91652)

[0003] In the above configuration, the rotation speed of the engine can be adjusted by operating either the control lever or the foot pedal, and the speed can be adjusted more flexibly. When connected to the mechanism, the tension force during the adjustment operation, especially when the foot pedal is depressed with a large load, the inner wire of the adjustment cable connected to it expands, which increases play and reduces operation accuracy. In addition to this, it has a structural defect that induces the locking pin attached to the tip of the inner wire to fall off, and in the worst case, the foot pedal operation becomes uncontrollable. there were.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned situation, and has been made to solve the conventional drawbacks. The inner cable of the adjustment cable connected to the inner wire is prevented from coming off, the reliability of the control device is improved, and play due to the inner wire being stretched is suppressed, so that the engine speed can always be smoothly operated. It is intended to provide an engine control device for a mobile agricultural machine.

[0005]

In order to solve the problems, the technical means adopted by the present invention includes a first adjustment cable having a start end connected to a control lever and a second adjustment cable having a start end connected to a foot pedal. and Jiyointo portion rotatable pivoting arm for actuating the rotation adjustment mechanism of the engine
Via respective timber to connect to each other, the pivot arm
Body with a connecting pin for connecting the tip of
Are bent into an L-shape to form a joint member, and
Inner water at the end of each adjustment cable inserted into the extra length
Of ear, while transmural interpolation factor stopping the terminating inner wire of the first adjusting cable surplus length portion, the tip end side inner wire of the second regulating cable, a ring-shaped engagement to be engaged in the elongated portion Attach the stopper and extend the inner wire
The other end of the coil bullet machine connected to the machine body one end along the direction, and connected to the locking piece, depression against the Futopeda <br/> Le depression standby position the biasing force of the coil bullet machine When you do
Rotating earth and the locking piece locked so to extra length portion of the joint member
The rotating mechanism is configured to rotate.

[0006]

Therefore, according to the present invention, it is possible to prevent the inner cable of the adjusting cable connected between the foot pedal and the rotation adjusting mechanism from coming off.
The reliability of the control device can be improved, the elongation of the inner wire can be suppressed, and the rotation speed of the engine can always be smoothly controlled.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of the present invention will be described in detail with reference to an embodiment shown in the drawings. 1 to 4, reference numeral 1 denotes a body frame of an agricultural tractor, in which an engine 2 is mounted on a front portion of the body frame 1 and a steering mast 3 is provided upright at a rear position thereof. A part 4 is provided.

A hood bracket 6 is formed on a panel frame 5 formed on the front surface of the driving operation unit 4.
A support pin 7 having a length of l and fixed to the hood bracket 6 and a fixing screw 8 having a length L (> l) are laterally attached to support plates 10a and 10b which are bent toward the bonnet 9 side. The bonnet 7 can be easily mounted by inserting and fixing only the fixing screw 8 with the nut 11.

On the side of the steering mast 3, a control lever 12 having a base end connected to a rotation link 12a is provided in parallel, and will be described later via a first adjustment cable 13 connected to the rotation link 12a. Joint member 1
4 and the floor 1 of the driving operation unit 4
5 is provided with a foot pedal 16, which is connected to the joint member 14 via a second adjustment cable 17. On the other hand, a rotation adjustment mechanism 1 for controlling the rotation speed of the engine 2 is provided on the engine 2 side.
8 is provided, and its rotating arm 18 a is connected to the joint member 14.

As shown in FIG. 5, the joint member 14 is formed by bending a main body 14a and its extra length 14b into an L-shape, and the first adjustment cable 13 is attached to the extra length 14b .
And an insertion hole 19 through which the inner wire 13a is inserted.
Insertion holes 20 through which the inner wire 17a of the adjustment cable 17 is inserted are formed, and a locking pin 21 is attached to a tip end of the inner wire 13a. The insertion hole 20 has a rectangular guide hole 22.
Are formed so as to communicate with each other, so that a ring-shaped locking piece 23 formed with a locking hole 23a can be inserted in a state of being fixed to a tip end of the inner wire 17a.

Reference numeral 24 denotes a connecting pin provided on the main body 14a for pivotally supporting the tip of the rotating arm 18a. A coil bullet having one end locked to the body frame 1 is provided in a stop hole 24a of the connecting pin 24. The other end of the machine 25 is engaged,
Similarly, a coil ammunition 2 having one end locked to the body frame 1 side
The other end of 6 is locked in the locking hole 23 a of the locking piece 23. Reference numeral 24 denotes a rotating arm 18 provided on the main body 14a.
a connecting pin for pivotally supporting the tip of
Of the blind hole 24a, and the other end of the coil bullet machine 25 engaged at one end to the body frame 1 side is engaged, the
The other end of the coil bullet 26 whose one end is locked to the body frame 1 along the extending direction of the inner wire 17a is locked in a locking hole 23a of the locking piece 23. An outer bracket 27 is attached to a front position of the joint member 14, and engagement holes 28 and 29 formed in the outer bracket 27 are provided with the first and second adjustment cables 13 and 17, respectively. The outer 13b, 17b is engaged. Reference numerals 30 and 31 denote fixing bolts and nuts for closing the guide holes 22 of the joint member 14.

In the above configuration, when the control lever 12 is now rotated to the high speed side, the rotation link 1
The inner wire 13a of the first adjustment cable 13 connected to 2a is pulled, the rotation arm 18a of the rotation adjustment mechanism 18 is rotated via the joint member 14, and the engine 2 is switched to high-speed rotation drive. When the control lever 13 is returned, the joint member 14 is pulled back by the urging force of the coil spring 25, and accordingly, the rotating arm 1 is moved.
8a also returns to the steady state, and the engine 2 enters the idling state.

On the other hand, when the foot pedal 16 of the driving operation unit 4 is depressed, the inner wire 17a of the second adjusting cable 17 is pulled, and is fixed to the tip of the inner wire 17a to hold the depressing standby posture. 23 is the remaining of the joint member 14 against the urging force of the coil bullet 26.
At the time of contact with the insertion hole 20 of the long portion 14b , the joint member 14 is pulled and the rotating arm 1 of the rotation adjusting mechanism 18 is rotated.
8a rotates, and the engine 2 switches to high-speed rotation drive.

By adjusting the rotation speed of the engine 2 by using the control lever 13 and the foot pedal 16 as described above,
The locking piece 23 is fixed to the end of the inner wire 17a of the second adjustment cable 17 and is connected to the extra length 14b of the joint member 14 via the coil spring 26, so that the foot pedal 16 is depressed. A large tensile load due to the operation is not directly applied to the locking piece 23, and the inner wire 17a is always kept in a tensioned state by the urging force of the coil spring 26.
Even if elongation occurs, loosening, play and the like of the inner wire 17a are wiped out, so that the foot pedal 16 can be smoothly depressed.

When performing inspection and maintenance work, extra
Fixing bolt 30 attached to the guide hole 22 of the portion 14b
The connection state between the joint member 14 and the second adjustment cable 17 can be easily released simply by removing the nut 31 and shifting the locking piece 23 locked in the insertion hole 20 to the opened guide hole 22 side. And disassembly and assembly during inspection and maintenance work can be easily performed.

In this embodiment, the joint member 14 is formed by bending the main body 14a and the extra length portion 14b into an L-shape, and connecting the inner length 17a of the second adjustment cable 17 to the extra length portion 14b . 6 is formed, and a rectangular guide hole 22 is communicated with the insertion hole 20. However, the present invention is not limited to this.
(A) As shown in (b), a main body 1 bent and formed in an L-shape
4a and the corner portion 32 of the elongated portion 14b, the locking piece 23
A guide hole 22a for inserting the inner wire 17a and an insertion hole 20a for inserting the inner wire 17a are formed so as to communicate with each other across the corner portion 32, and the locking piece 23 is inserted into the guide hole 22a. May be moved to the insertion hole 20a side to lock the locking piece 23 in the insertion hole 20a.

[0017]

In summary, according to the present invention, the first adjustment cable having the start end connected to the control lever and the second adjustment cable having the start end connected to the foot pedal are pivotally operated to operate the rotation adjustment mechanism of the engine. For a free rotating arm
A body provided with a connecting pin for connecting the tip of the rotating arm to be separately connected via a joint member, respectively.
And the extra length is bent into an L-shape to form a joint member.
End of each adjustment cable formed and inserted through the extra length
Of the end-side inner wire, while transmural interpolation factor stopping the terminating inner wire of the first adjusting cable surplus length portion, the tip end side inner wire of the second regulating cable, a ring to be engaged in the elongated portion Attachment-shaped locking piece and the inner
The other end of the coil bullet machine having one end connected to the body side along the extending direction of the wire, connected to the locking piece, depression standby position
Of upon depressing operation against the biasing force of the coil bullet machine foot pedal, because I configured to rotate actuating the pivoting arms locked so the engaging piece to the extra length portion of the joint member, by foot pedal At the time of the stepping operation, the joint member is operated with an appropriate play, so that a steep stepping load is not directly applied to the joint member,
While the inner wire is maintained in a moderately tensioned state by the biasing force of the coil ammunition and the engine rotation speed can be controlled smoothly, when the foot pedal is released, the Due to the urging force of a coil machine interposed between the locking piece and the locking piece ,
Since the locking of the member to the extra length can be quickly released, the return rotation resistance of the joint member or the return resistance of the inner wire can be eliminated as much as possible, and a quick return operation of the foot pedal can be promoted. Also, in an interconnected operation such as relatively fine-tuning the rotation speed with the foot pedal with respect to the set speed with the control lever,
Regardless of the magnitude of the operation amount on the control lever side, the inner wire of the second adjustment cable inserted into the joint member can be maintained in a constant tension state, and the inner wire of the second adjustment cable can be connected to other mechanisms and members induced by the loosening of the inner wire. This is an extremely useful practical effect that operability of the foot pedal with good response can be secured while preventing interference.

[Brief description of the drawings]

FIG. 1 is a side view of a main part of an agricultural tractor equipped with an engine control device.

FIG. 2 is a plan view of a main part partially omitted from the above.

FIG. 3 is a bottom view of a main part of the support plate.

FIG. 4 is an operation explanatory view showing an attached state of a hood bracket.

FIG. 5 is an exploded perspective view of the engine control device.

FIG. 6A is a right side view of a main part showing another embodiment. (B) is a partially cutaway front view of the same.

[Description of Signs] 2 Engine 12 Control lever 13 First adjustment cable 13a Inner wire 14 Joint member 14a Main body 14b Extra length 16 Foot pedal 17 Second adjustment cable 17a Inner wire 18 Rotation adjustment mechanism 19 Insertion hole 20 Insertion hole 23 Engagement Piece 26 coil ammunition

Claims (1)

(57) [Scope of request for utility model registration] A first adjustment cable having a start end connected to a control lever and a second adjustment cable having a start end connected to a foot pedal actuate a rotation adjustment mechanism of the engine .
In order to connect to the rotatable rotatable arms via a joint member, respectively, the tip of the rotatable arm is connected.
The main body with the connecting pin and the extra length are folded into an L-shape.
Bend to form a joint member and insert through the extra length
Among the terminating inner wire of the adjusting cable that, while transmural interpolation factor stopping the terminating inner wire of the first adjusting cable surplus length portion, the tip end side inner wire of the second regulating cable, the extra length portion Attach a ring-shaped locking piece to be locked , and one end along the extension direction of the inner wire.
The other end of the coil bullet machine connected to the machine body, and connected to the engaging piece, the foot pedal depression waiting position of the coil bullet machine
When stepping in against the urging force , the joint members
Engine control apparatus in a mobile agricultural machine which is characterized by being configured by engaging the locking piece in the elongated portion of the rotating arm to rotate actuation.