JPH0736101Y2 - Engine speed control device for reaper - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention controls the engine speed at a high speed when there is a raised culm for cutting, but controls the engine speed at a low speed when there is no raised culm. The present invention relates to an engine speed control device for a reaper.

[Prior art]

Conventionally, when performing cutting work with a binder, the engine speed is adjusted to a low speed to run at low speed in order to match the cutting blade position on the machine side with the planting row line of the cutting grain culm, but the cutting blade position is When it is in line, the engine speed is increased and the harvesting work is performed. In addition, since the aircraft turned around at the end of the field, it was necessary to adjust the engine speed again to a low speed and perform a turning operation at a low speed.

[Problems to be solved by the invention]

By the way, in the above-mentioned conventional reaper, at the beginning and at the end of the reaping work, in addition to the adjustment of the engine speed, the steering clutch and the reaping clutch are connected / disconnected, so that there are many operating points and there is much fatigue. I got it.

Therefore, in consideration of the above-mentioned conventional circumstances, the present invention was devised to solve the problem.It is possible to rotate the engine at high speed when there is a cutting culm with the slotl lever set to the high speed position. It is an object of the present invention to provide an engine speed control device for a reaper that has a simple operation and can rotate the engine at a low speed when there is no culm to be cut.

[Means for solving problems]

The present invention that achieves the above object is a reaper equipped with a throttle lever connected to a slot arm and an operation lever for inserting and disconnecting a mowing clutch, in which the operation lever and a detection sensor provided in front of the cutting blade are provided. In the meantime, the slotter arm that has moved to the high speed position at the high speed position of the slottle lever is moved to the low speed position at the entry position of the operation lever, and the slot arm at the low speed position is moved to the high speed position by detecting the grain culm of the detection sensor. It is provided with a restricting mechanism that allows it to be moved to.

[Action]

Therefore, even in the case of the reaper B provided with the slot lever 9 connected to the slot lever 17 and the operation lever 6 for connecting and disconnecting the cutting clutch 10, the operation lever 6 and the cutting blade 1 are provided in front. Between the detection sensor 4 and the detection sensor 4, the throttle arm 17 moved to the high speed position at the high speed position of the slot lever 9 is moved to the low speed position at the entry position of the operation lever 6, and the slot arm 17 at the low speed position is moved. Mechanism 20 for moving the low speed position by detecting the grain culm of the detection sensor 4
Therefore, even if the throttle lever 9 is operated to the high speed position, when the operation lever 6 is operated to the “in position”, the throttle mechanism 17 moves the throttle arm 17 to the low speed position by the restricting mechanism 20. Is kept at a low speed.

Moreover, when the detection sensor 4 detects a grain culm to be cut,
Since the throttle mechanism 17 is moved to the high speed position by the restriction mechanism 20, the engine 7 is held at the high speed rotation set by the throttle lever 9.

Further, when the aircraft is stopped, the throttle lever 9 is returned to the low speed position and the operation lever 6 is returned to the “off position”, but in conjunction with this, the restriction mechanism which returns to the original high speed position.
Since 20 does not engage with the slot arm 17 in the direction from the low speed position to the high speed position, the slot lever lever 9
The throttle arm 17 moved to the low speed position is held at the low speed position, and the starting safety of the engine 7 to be performed next time is ensured.

〔Example〕

Hereinafter, the drawings showing the present invention as an embodiment will be described.

As shown in FIG. 1, the binder B is provided with a clipper-type cutting blade 1 for cutting the napped culms K as the machine body advances,
Frames 2 in the front-rear direction that extend forward beyond the cutting blade 1 are provided on opposite sides of the cutting blade 1 so as to sandwich it. A vertical fulcrum shaft 3 located in front of the cutting blade 1 is fixed to one of the frames 2, and the napped culm K is attached to the fulcrum shaft 3.
The base end side of the detection sensor 4 for detecting the presence or absence of the sensor is rotatably fitted, and the base end side of the sensor 4 has a link 5 which rotates integrally with the sensor 4 about the fulcrum shaft 3. Is fixed.

In addition, a steering handle (not shown) provided behind the binder B is selectively tilted to the “cut position” indicated by the chain line and the “entry position” indicated by the solid line around the fulcrum shaft 6a, and the cutting clutch is selected.
An operation lever 6 for turning on / off 10 and a slot lever 9 for arbitrarily adjusting the rotation speed of the engine 7 between a "low speed position" shown by a chain line and a "high speed position" shown by a solid line are attached. When the operation lever 6 is tilted to the "ON position", the machine body starts running and can mow the harvested grain culm K, and when tilted to the "OFF position", the machine body can be stopped.

The slottle lever 9 is interlockingly connected to a governor arm 12 fixed to a governor shaft 11 via a Bowden wire 8. The governor arm 12 and a fulcrum shaft arranged adjacent to the arm 12 are supported.
An interlocking arm 14 that is swingably provided around the center 13 is interlockingly connected via a spring 15, and the spring 15 is an interlocking arm when the throttle lever 9 moves to a high speed position shown by a solid line. The arm 14 and the slot arm 17 interlocking with the arm 14 are provided so as to be urged toward the high speed position.

Further, the tip end of the interlocking arm 14 and the tip end of the slottdle arm 17 fixed to the slottlet shaft 16 of the engine 7 are pivotally connected by a connecting rod 19. The interlocking arm 14 is biased by a return spring 18 so as to be able to return to the low speed position of the throttle arm 17, and the return spring 18 is configured to be weaker than the spring 15. A connecting rod 21 whose one end is pivotally connected to the operating lever 6 by a connecting pin 6b.
The other end of the connecting pin 6b is pivotally connected to an operating arm (not shown) of the mowing clutch 10, and the operating lever 6 has the connecting pin 6b.
Is provided with a sliding shaft 22 which is concentrically connected at one end to the sliding shaft 22. The sliding shaft 22 is extended forward, and the tip end side thereof is slidable on a restriction mechanism 20 described later in detail. They are linked together.

The regulation mechanism 20 includes a throttle arm of the engine 7 between the detection sensor 4 provided in front of the cutting blade 1 and the operation lever 6.
It is opposite to the tip side of 17. In this restricting mechanism 20, the first joint 23 bent and formed in a U-shape in a plan view and the second joint 24 bent and formed in a U-shape in a plan view are integrally formed on the back straight portion. Although formed by being fixedly attached, the tip end side of the sliding shaft 22 slidably penetrates the first joint 23 formed in a U-shape to project forward, and the projecting portion thereof is formed. A plain washer 22a as a stopper is fixedly attached to the front washer 23a of the first joint 23, and a spring 25 is positioned between the inside of the front piece 23a of the first joint 23 and the plain washer 22c positioned by the snap ring 22b fitted to the outer diameter of the sliding shaft 22. Is provided with this spring 2
The first joint 23 is always urged toward the plain washer 22a by 5. In addition, it is desirable to interpose a tumbler whose length can be adjusted in the middle of the sliding shaft 22.

The other end of the sliding shaft 27, to which one end of the link 5 on the grain culm detection sensor 4 side is pivotally connected, slides on the second joint 24 which is extended rearward and is bent and formed in a U-shape. A flat washer 27a is fixed as a stopper that comes in contact with the front side piece 24a forming the second joint 24, though it is freely penetrating. The front side piece 24a is extended to the tip of the slott arm 17 described above at a position that restricts the movement of the arm 17 to the high speed side. It should be noted that it is desirable to interpose a tumbler whose length can be adjusted in the middle of the sliding shaft 27.

When performing the mowing work with this binder B, the engine 7
In order to increase the rotation speed of the engine, the throttle lever 9 is moved to the high speed side. With this movement, the Bowden wire 8 is pulled and the governor shaft 12 of the engine 7 is pulled through the governor arm 12.
11 rotates toward the right side in FIG. 1, and the urging force of the spring 15 pushes the throttle arm 17 to the high speed side via the interlocking arm 14 and the connecting rod 19, so that the rotation speed of the engine 7 increases. To do. In this case, since the operation lever 6 is still in the “off position” and the regulation mechanism 20 is held in the retracted position shown by the chain line, the slotted arm moved to the high speed position.
17 is held in that position, and the engine 7 is rotating at high speed.

When the operating lever 6 is tilted to the "in position" while the engine 7 remains in the high speed state, the sliding shaft 22 moves forward together with the regulation mechanism 20 and is slid by the front piece 24a that has moved forward. The tuttle arm 17 is pushed to a low speed position and the engine 7 is restricted to a low speed rotation. At this time, the cabana arm 12 is held at the initially set high speed position without moving and displacing only by reducing the spring 15. There is.

When the machine body advances due to the tilting of the operation lever 6 to the “entered position”, the grain culm detection sensor 4 is brought into contact with the stocker side of the napped grain culm K and displaced and moved to the rear side indicated by the chain line (grain culm). (Detection state), the sliding shaft 27 is pushed backward accordingly, and the flat washer 27a fixed to the sliding shaft 27 moves the regulating mechanism 20 integrally to the backward position indicated by the chain line. Spring
The throttle arm 17 urged by 15 is moved to the high speed position. Along with this, the engine 7 returns to the rotation speed at the high-speed position initially set by the throttle lever 9, so that the machine body advances in the high-speed rotation state of the engine 7, whereby the reaping work can be performed.

This state is continued while the standing culm culms K are continuously arranged at a predetermined interval, so that the mowing work can be performed with the engine 7 at a high speed, but when the culming culms K are lost at the end of the field, the rear culm culms K are lost. The grain culm detection sensor 4 that was tilted to the
Since the slotted arm 17 is pushed back to the low speed side by the front side piece 24a of the regulating mechanism 20 which is rotated forward by the urging force of the sliding shaft 27 integrally with the sliding shaft 27 and moves to the forward position shown by the solid line,
The rotation speed of the engine 7 can be automatically controlled to a low speed. It is possible to change the direction of the machine running at this low speed and adjust the position of the cutting blade 1 to the next cutting line.

Further, when the aircraft is stopped, the throttle lever 9 is returned to the low speed position and the operation lever 6 is returned to the “off position”.
The regulating mechanism 20 returns to the original rear position (high speed position) integrally with the sliding shaft 22 in conjunction with the tilting of the operation lever 6, but the regulating mechanism 20 moves in the direction from the low speed position to the high speed position. Since the front side piece 24a does not engage with the throttle arm 17, the throttle arm 17 moved to the low speed position by the throttle lever 9 by the return spring 18 is held at the low speed position, and the engine 7 is started next time. Safety is secured.

Above is the throttle lever 9 and the governor arm 12 and spring 1.
The embodiment in which the slot arm 17 is connected to the slot arm 17 via the interlocking arm 14 and the connecting rod 19 has been described, but in the present invention, the slot lever 9 is directly connected to the slot arm 17 via the Bowden wire 8 and the spring 15. It may be connected, in which case the return spring 18 is directly connected to the slotted arm 17. Further, although the binder has been described above, the present invention can also be used for a combine harvester.

[Effect of device]

As described above, the present invention provides a slotter lever connected to a slotter arm and a reaper equipped with an operating lever for connecting and disconnecting the reaping clutch, but the operating lever and the blade are provided in front of the reaper. The slotter arm, which has moved to the high speed position at the high speed position of the slotter lever, is moved to the low speed position when the operation lever is in the position between the detection sensor and this low speed position. Even if the throttle lever is moved to the high speed position by operating the operating lever to the on position, the restriction mechanism automatically moves the throttle lever to the low speed position even if the throttle lever is moved to the high speed position. Move
The engine can rotate at low speed.

Moreover, when the detection sensor detects a grain culm to be cut,
The restricting mechanism allows the throttle lever to move to a high speed position and the engine to rotate at the high speed initially set by the throttle lever.

Furthermore, when the aircraft is stopped, the throttle lever is returned to the low speed position and the operation lever is returned to the off position, but in conjunction with this, the restriction mechanism that returns to the original high speed position is from the low speed position to the high speed position. Since the throttle arm is not engaged in the direction toward, the throttle arm is held at the low speed position, and the starting safety of the next engine can be secured.

Therefore, with the throttle lever set to the high speed position, the engine can be rotated at high speed when there is a grain to be mowed, and the engine can be rotated at a low speed when there is no grain to be mowed. The adjustment of the engine speed at the beginning and the end of the harvesting work can be completely eliminated and the operation can be simplified.

[Brief description of drawings]

The drawing shows one embodiment of the present invention, and FIG. 1 is an explanatory view of essential parts showing an example of applying the present invention to a binder. B: reaper, 1 ... cutting blade, 4 ... detection sensor, 6 ...
Operating lever, 7 ... engine, 8 ... Bowden wire,
9 …… Slottle lever, 10 …… Mowing clutch, 15 ……
Spring, 18 ... Return spring, 20 ... Restricting mechanism, 22 ... Sliding shaft, 22a ... Plain washer, 23 ... First joint, 24 ... Second joint, 25 ... Spring, 27 ... Sliding Drive shaft, 27a ... Plain washer.

Claims (1)

[Scope of utility model registration request] 1. A reaper equipped with a throttle lever connected to a slot arm and an operation lever for inserting and disconnecting a reaping clutch, wherein the operation lever and the detection sensor provided in front of the cutting blade are provided with Restriction that moves the throttle arm that has moved to the high speed position at the high speed position of the slottle lever to the low speed position when the operation lever enters the position, and also moves the throttle arm at the low speed position to the high speed position by detecting the grain culm of the detection sensor. An engine speed control device for a reaper equipped with a mechanism.