JP3108593B2 - Intermittent control device of reaping clutch - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutting clutch intermittent control device configured to detect the presence or absence of a grain stalk in a grain stalk raising path and automatically switch the cutting clutch on and off. The components of the control unit are mounted on one bracket at a time to reduce dimensional variations associated with disassembly and assembly work, improving ease of assembly and processing accuracy, and maintaining stable and smooth switching operation. The present invention relates to an intermittent control device for a reaping clutch.

[0002]

2. Description of the Related Art Conventionally, a mowing clutch lever provided on a traveling operation section is provided in a mowing machine which is provided with a cereal stem raising body at a tip portion of an airframe and travels on a field while cutting a raised stem of the culm with a cutting blade. In addition to the manual on / off operation of the clutch by the method described above, there is known a configuration in which the presence or absence of a grain culm is detected by a sensor provided in a path for raising the grain culm and the cutting clutch is automatically switched on and off. However, in the above-described configuration, the on / off state of the clutch is switched by the reaping clutch lever via the pulling wire, so that the switching structure is extremely complicated, and the assembly and disassembly require a high degree of adjustment. Not only is the technique required, but also with the elongation or catch of the pulling wire over time, the switching operation is likely to fail when the clutch is automatically switched on and off, and a stable harvesting operation cannot be performed smoothly. There was a fear that.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances to solve the conventional problems, and a purpose thereof is to provide an automatic on-off switching of a reaping clutch. The components can be mounted together on a single bracket without the need for special adjustment technology, to reduce variations during assembly and to eliminate malfunctions during switching operations. The present invention is intended to provide a cutting clutch intermittent control device capable of performing stable and smooth cutting.

[0004]

In order to solve the above-mentioned problems, a first technical means adopted by the present invention is to attach a shifter plate to a rotating shaft of a shifter for connecting and disconnecting a reaping clutch. The shifter plate is connected with a connecting rod that moves forward and backward in response to the detection of the presence or absence of a grain stem by a sensor bar provided inside the grain stem raising path, and slides in the axial direction in conjunction with the operation of the cutting clutch lever. The control rod was inserted into the support projection provided on the shifter plate, and a pair of coil springs having different pressing loads were coaxially inserted in the axial direction of the control rod inserted into the support projection with the support projection interposed therebetween. As it is
The control rod is elastically slidably mounted between both sides of a bracket formed into a U-shaped cross section, and the control rod is connected to the cutting clutch lever via a pull wire,

[0005] As a second technical means, a shifter plate is pivotally mounted on a rotating shaft of a shifter for connecting and disconnecting the mowing clutch, and a grain stalk is raised on a lower portion of the shifter plate substantially hanging from the rotating shaft. A control rod that moves forward and backward in conjunction with the detection of the presence or absence of a grain culm by a sensor bar provided inside the path is connected to the control rod that slides in the axial direction in response to the operation of the reaping clutch lever. A pair of coil springs with different pressing loads are inserted through the support projections provided in the upper part of the shifter plate located almost directly above the dynamic shaft and in the axial direction of the control rod inserted through the support projections. While being coaxially inserted, the control rod is mounted between both sides of a bracket formed by bending the control rod into a U-shape in cross section, and the control rod is moved in the axial direction by operating the cutting clutch lever via a pulling wire. I will slide Characterized by a characterized by being configured to,

[0006] As a third technical means, a shifter plate is pivotally mounted on a rotation shaft of a shifter for connecting and disconnecting the mowing clutch, and the grain bar is mounted on the shifter plate by a sensor bar provided inside a grain stem raising path. A connecting rod that moves forward and backward in conjunction with the detection of presence / absence is connected, and a control rod that slides in the axial direction in conjunction with the operation of the reaping clutch lever is rotatable and axially movable on the shifter plate. The control rod is inserted into the support projection provided, and the control rod is inserted in the axial direction of the control rod inserted through the support projection. The bracket is bent in the shape of a letter so as to be slidable in the axial direction between both sides, and the control rod inserted through the support projection is slid in the axial direction by operating the cutting clutch lever via a pulling wire. Configured And characterized in that,

Further, as a fourth technical means, there is provided a shifter plate which is mounted on a rotation shaft of a shifter for connecting and disconnecting the mowing clutch, and a sensor bar which is connected to the shifter plate and is provided inside a grain stem raising path. A connecting rod that moves forward and backward in response to the detection of the presence or absence of a grain stem, and a control rod that is also connected to the shifter plate and slides in the axial direction in response to the operation of the cutting clutch lever. The rod is inserted through the support projection provided on the shifter plate, and in the axial direction of the control rod inserted through the support projection, a pair of coil springs having different pressing loads are coaxially fitted with the support projection interposed therebetween. The control rod is axially slidably mounted between both sides of a bracket having a U-shaped cross section, and a switching hook engageable with the shifter plate is provided at an intermediate portion of the control rod. In conjunction with the on / off clutch operation of the latch lever, the shifter plate is rotated to the cut position or the contact position of the reaping clutch, and when the operation of the reaping clutch lever is fixed at a predetermined position, the cultivation of the grain stem by the sensor bar is performed. It is characterized in that the shifter plate is rotated to a disengaged position or a contact position of the reaping clutch by an advancing and retreating operation of the connecting rod in conjunction with the detection of the presence or absence.

[0008]

Therefore, according to the present invention, the switching setting of the mowing clutch can be reliably performed without any variation without requiring any advanced adjustment technology, and the working efficiency in the assembling and disassembling operations can be improved while improving the efficiency. The switching adjustment can be performed promptly, and the switching operation of the reaping clutch can be performed stably and quickly.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The construction of the present invention will be described in detail with reference to one embodiment shown in the drawings. 1 to 3, reference numeral 1 denotes a binder, 2 denotes a pre-processing unit of the binder 1, and the pre-processing unit 2 includes a pair of left and right grain stems on a support frame 5 including a horizontal pipe 3 and a vertical pipe 4. The raising members 6, 6 are erected in a rearwardly inclined manner, and a cutting blade 7 and a binding mechanism 7
and a transmission pipe 9 is obliquely provided on the body 1a from the intermediate position of the vertical pipe 4 toward the rear, and a rotational driving force from the engine 10 is provided. The transmission is transmitted to a transmission shaft 12 provided inside a transmission pipe 9 via a transmission 11 to drive the grain stem raising members 6 and 6 and the cutting unit 8. Reference numeral 13 denotes a driving handle extending obliquely rearward of the body main body 1a. Reference numeral 14 denotes a speed change lever provided on the body main body 1a. "ON", "OFF",
A harvesting clutch lever 16 that can be switched to three levels of “AUTO” is provided.

As shown in FIG. 4 (b), a gear case 19 having a driven shaft 17 and a cutting clutch 18 which is slidable in the axial direction is interposed at the connecting position between the vertical pipe 4 and the transmission pipe 9. The rotation driving force of the transmission shaft 12 entering the gear case 19 is transmitted to the bevel gear 21 inserted through the driven shaft 17 via the bevel gear 20, and the rotation of the rotation shaft 23 via the shifter 22 is performed. ,
A clutch groove 21a formed on the back surface of the bevel gear 21
The transmission of the driving force to the reaping portion 8 is intermittently performed by detachably fitting and locking the clutch claws 18 a of the reaping clutch 18 to the reaping clutch 18, and the rotating shaft 23 protruding from the outer surface of the gear case 19 is provided. A shifter plate 24 is axially mounted on the shaft via fixing bolts 23a. Reference numeral 25 denotes a driven shaft that transmits a driving force to the cereal stem raising bodies 6 and 6.

On the other hand, as shown in FIGS. 5 and 6, a sensor bar 26 for detecting the presence or absence of a cereal culm is formed between the cereal culm raising bodies 6, 6 near the tip of the horizontal pipe 3. It is rotatably supported on a rotating ring 27 on the side of the horizontal pipe 3 facing the inside of the cereal stem raising path a. Also, as shown in FIGS.
The other end of the connecting rod 28 having a leading end connected to the lower part of the shifter plate 24 substantially hanging from the rotating shaft 23 via a connecting bracket 40 described later. The shifter plate 24 is rotated by the connecting rod 28 that moves forward and backward, and the connecting rod 2
8 from the connection position 8 to the center of the shifter plate 24, that is, the upper part located almost immediately above the fixing bolt 23a,
A long hole 24a is formed, and a support protrusion 30 through which the control rod 29 is inserted is attached to the long hole 24a so as to be freely rotatable and movable in the axial direction of the rotating shaft 23.

The coil spring 31 and the coil breaking machine 31 are connected to the distal end of the control rod 29 via a stopper 31a.
The support projection 30 is connected to the coil bullet 32 having a larger pressing load.
The control rod 29 is axially slidably mounted between both sides of a bracket 33 having a U-shaped cross-section while being fitted coaxially with the support bracket interposed therebetween. 34 to the bracket 3 via mounting bolts 35, 35.
3 is removably mounted.
The end of the cutting clutch lever 16 on the side of the cutting clutch lever 16 is extended in the sliding direction of the control rod 29, and the extension end of the cutting cable lever 16 is connected to an outer cable 36a containing a tension wire 36 connected to the cutting clutch lever 16. The receiving portion 37 is formed integrally.

In addition, a switching hook engageable with a fitting groove 38 formed at a position below the support projection 30 of the shifter plate 24 in the middle between the coil bullets 31 and 32 fitted to the control rod 29. The shifter plate 24 is turned around the turning shaft 23 in accordance with the sliding movement of the control rod 29, and the cutting clutch 18 is intermittently connected. Reference numeral 40 denotes a connection bracket that penetrates the distal end of the connection rod 28 connected to the shifter plate 25. The connection bracket 40 connects the connection rod 28 to the coil bullet 4
1 to be held in the forward and backward directions.

In the configuration described above, when the reaping clutch lever 16 is tilted from the "OFF" position to the forward "ON" position as shown in FIG. Armed coil ammunition 32
9 overcomes the biasing force of the coil ammunition 31, and FIG.
As shown in (a), the control rod 29 slides in the direction of the arrow A, and the switching hook 39 provided at the intermediate portion of the control rod 29 also slides in the direction A in accordance with the sliding operation. When the switching hook 39 comes into contact with one end 38a of the fitting groove 38, the shifter plate 24 is fixed to the fixing bolt 23a.
(Rotating shaft 23), the shifter 22 moves the cutting clutch 18 in the axial direction of the driven shaft 17, the clutch pawl 18a fits into the clutch groove 21a of the bevel gear 21, and the cutting clutch 18 becomes “contact”, the rotational driving force of the transmission shaft 12 is transmitted to the driven shaft 17 via the bevel gear 20 and the bevel gear 21, and the cutting blade 7 of the cutting unit 8 can be always cut regardless of the presence or absence of a grain culm. It is driven to a proper state.

Further, when the above-mentioned reaping clutch lever 16 is
"AUTO" in the middle from the "N" position to the "OFF" position
When the operation is returned to the position, as shown in FIG. 10, the control rod 29 slides in the direction of arrow B against the urging force of the coil spring 32 by the pulling operation of the pulling wire 36, and the switching hook 39 is inserted into the fitting groove 38. Are free from contact with both hole ends 38a, 38b. At this point, the shifter plate 24 is moved forward and backward by the connecting rod 28, that is, when the sensor bar 26 is tilted in the direction of entry of the grain stem shown by the chain line in FIG. The rod 28 is pushed up in the direction of arrow C via the rotating ring 27, and the shifter plate 24 is rotated counterclockwise together with the rotating shaft 23 by the connecting bracket 40, and the reaping clutch 18 is brought into "contact" as described above.
As a result, the root of the grain stalk that has entered the path a by raising the grain stalk by driving the cutting blade 7 is cut off. When there is no cereal stalk in the stalk raising path a, the sensor bar 26 returns to the position shown by the solid line in FIG. 6, the connecting rod 28 is pulled back in the direction of the arrow D via the rotating ring 27, and Due to the urging force of 31, the shifter plate 24 rotates clockwise together with the rotating shaft 23 to the "disengaged" position. Conversely, the cutting clutch 18 is "disengaged" and the cutting drive of the cutting blade 7 is stopped. That is, the interception of the cutting clutch 18 is automatically performed by the detection of the presence or absence of a grain stem by the sensor bar 26.

Next, the cutting clutch lever 16 is moved to the "AUT
When the pull-back operation is performed from the “O” position to the rear “OFF” position, as shown in FIG. 9B, the pulling operation of the pulling wire 36 against the urging force of the coil armature 32 causes the control rod 29 to further move in the direction of arrow B. And the switching hook 39 is inserted into the fitting groove 38.
When the shifter plate 24 rotates clockwise together with the rotation shaft 23 at the time of contact with the other hole end 38b, the shifter 22 moves the cutting clutch 18 in the axial direction of the driven shaft 17, and the clutch pawl 18a The bevel gear 21 is disengaged from the clutch groove 21a, the transmission of the rotational driving force of the transmission shaft 12 via the bevel gear 20 and the bevel gear 21 is "disconnected", and the cutting drive of the cutting blade 7 The state is always switched to a stopped state regardless of the presence or absence.

In the switching operation of the cutting clutch lever 16 and the on-off control of the cutting clutch 18 by the automatic on-off operation of the sensor bar 26, the control rod 29 is provided with coil ammunition units 31, 32 having different pressing loads in the axial direction. Since the support protrusion 30 is inserted coaxially with the support protrusion 30 therebetween, the operating force of the tilting switching operation of the reaping clutch lever 16 is reliably transmitted to the shifter plate 24, and substantially from the rotation shaft 23 of the shifter plate 24. A connecting rod 28 interlocking with the detection of the presence or absence of a grain culm by the sensor bar 26 is connected to a lower portion of the suspended shifter plate 24, and the control rod 2
9 is supported by the support projection 30 provided on the upper part of the shifter plate 24 located almost directly above the rotation shaft 23, so that the configuration around the bracket 33 is made compact and the assemblability is improved. it can.

The control rod 29 has a support protrusion 30 supported by a long hole 24a formed in the shifter plate 24.
As shown in FIG. 11, even when the shifter plate 24 rotates, the support protrusion 30 rotates in conjunction with the rotation of the shifter plate 24 in the axial direction of the rotation shaft 23, as shown in FIG. It can move and slide the control rod 29 and shifter plate 2
4 can be smoothly linked. Further, the control rod 29 is inserted into the fitting groove 38 of the shifter plate 24.
Of the reaping clutch lever "ON", "OF"
F "and" AUTO "can be reliably performed.

[0019]

In short, according to the present invention, a shifter plate is pivotally mounted on a rotating shaft of a shifter for connecting and disconnecting a mowing clutch, and a grain is formed on the shifter plate by a sensor bar provided inside a grain stem raising path. Connecting a connecting rod that moves forward and backward in response to the detection of the presence of the culm, and inserting a control rod that slides in the axial direction in conjunction with the operation of the reaping clutch lever through a support projection provided on the shifter plate, In the axial direction of the control rod inserted through the support protrusion, while a pair of coil springs having different pressing loads are coaxially fitted with the support protrusion interposed therebetween,
Since the control rod was slidably mounted in the axial direction between both sides of the bracket formed by bending the control rod into a U-shaped cross section, and the control rod was connected to the reaping clutch lever via a pull wire, the pressing load of the pressing load was reduced. By simply changing the set dimensions of a pair of different coil ammunition to brackets with various changes, it is possible to easily adjust the strength of the pressing load of the coil ammunition in accordance with the operational feeling of the consumer. Since the coil ammunition is inserted coaxially across the support projection in the axial direction of the control rod, a smooth operation feeling can be achieved without causing such problems as bending of the coil armature and catching with the control rod. And its operating efficiency is also improved. Also,
On the lower part of the shifter plate, which is substantially suspended from the rotation axis,
A control rod that slides in the axial direction in conjunction with the operation of the reaping clutch lever is connected to a connecting rod that moves forward and backward in response to the detection of the presence or absence of a grain culm by the sensor bar, and is located almost directly above the rotation axis of the shifter. Since it is inserted into the support projection provided on the upper part of the shifter plate located, the configuration around the bracket is made compact, the assemblability can be improved, and the workability during inspection and maintenance can be improved. Further, the control rod, which slides in the axial direction in conjunction with the operation of the reaping clutch lever, is inserted through the support protrusion provided on the shifter plate so as to be rotatable and movable in the axial direction, so that the shifter plate rotates. In this case, the support projection can be easily moved in the axial direction of the rotating shaft while rotating in conjunction with the rotating operation, and the sliding operation of the control rod and the rotating operation of the shifter plate can be performed. It can be linked smoothly. Further, a switching hook engageable with the shifter plate is provided at an intermediate portion of the control rod, and the shifter plate is rotated to a disconnected position or a contact position of the cutting clutch in conjunction with the on / off clutch operation of the cutting clutch lever, And, when the operation of the mowing clutch lever is fixed at a predetermined position, the shifter plate is rotated to the disconnected position or the contact position of the mowing clutch by the reciprocating operation of the connecting rod interlocking with the detection of the presence or absence of the grain stem by the sensor bar. With such a configuration, the clutch switching operation by the reaping clutch lever can be reliably performed with a simple configuration. Thus, the component members of the intermittent control device can be mounted without requiring any special adjustment technology and with reduced variations at the time of assembly, and the ease of assembly and the processing accuracy can be improved. While improving work efficiency in assembly and disassembly work,
Switching adjustment again after disassembly and assembly can be performed quickly,
The switching operation of the mowing clutch can be performed stably and promptly without inducing the catch of the pulling wire. The operation failure at the time of switching caused by the tilting operation of the reaping clutch lever is wiped out, and the manual switching and automatic intermittent operation of the reaping clutch can be performed stably and smoothly, so that the grain culm can be reliably harvested. This is an extremely useful novel effect.

[Brief description of the drawings]

FIG. 1 is an overall side view.

FIG. 2 is a transmission system diagram of a driving force.

FIG. 3A is a perspective view of a main part showing a configuration around a driving handle. FIG. 3B is a perspective view of a main part showing an arrangement of a clutch lever.

FIG. 4A is a side view of a main part showing a mounted state of a cutting clutch lever. (B) is a principal part sectional view showing the structure at the connection position of the vertical pipe and the transmission pipe.

FIG. 5 is a main part side view showing a connection state of a bracket, a pull wire, and a coil bullet to a shifter plate.

FIG. 6 is a main part plan view showing a connection state of a sensor bar, a connecting rod, and a pull wire.

FIG. 7 is a main part side view showing a connection state of a bracket, a pull wire, a switching hook, and a coil ammunition to a shifter plate. It is a principal part side view which shows the connection state of the bracket, the tension wire, and the connecting rod with respect to a shifter plate.

FIG. 8 is an exploded perspective view showing attachment of a control rod and a shifter plate.

FIG. 9A is an operation explanatory view showing the operation of the control rod and the shifter plate when the reaping clutch lever is operated to the “in” side. (B) is an operation explanatory view showing the operation of the control rod and the shifter plate when the cutting clutch lever is operated to the “off” side.

FIG. 10 is an operation explanatory view showing the operation of the control rod and the shifter plate when the cutting clutch lever is operated to the “AUTO” position.

FIG. 11 is an operation explanatory view of a main part showing an operation state of a shifter plate and a control rod via a support protrusion.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 16 Cutting clutch lever 18 Cutting clutch 19 Gear case 22 Shifter 23 Rotating shaft 24 Shifter plate 24a Long hole 26 Sensor bar 28 Connecting rod 29 Control rod 31 Coil armature 32 Coil armature 33 Bracket 36 Pulling wire 39 Switching hook

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-1-179619 (JP, A) JP-A-62-51920 (JP, A) Japanese Utility Model Application No. 54-120419 (JP, U) Japanese Utility Model Application Model No. 51- 140724 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) A01D 69/00-69/06

Claims (4)

(57) [Claims] 1. A sifter plate is pivotally mounted on a rotation shaft of a shifter for connecting and disconnecting a reaping clutch. The shifter plate is linked to detection of the presence or absence of a grain culm by a sensor bar provided inside a grain stalk raising path. A control rod that connects the connecting rod that moves forward and backward and slides in the axial direction in conjunction with the operation of the reaping clutch lever is inserted into the support projection provided on the shifter plate, and the control rod that is inserted into the support projection is Axial sliding between the two sides of a bracket formed by bending the control rod into a U-shape cross section while a pair of coil springs with different pressing loads are inserted coaxially across the support projection in the axial direction. An intermittent control device for a reaping clutch, wherein the control lever is connected to the reaping clutch lever via a pull wire. 2. A sifter plate is pivotally mounted on a rotating shaft of a shifter for moving a cutting clutch toward and away from the cutting clutch, and is provided on a lower portion of the shifter plate substantially hanging down from the rotating shaft, inside a grain stem raising path. A control rod that slides in the axial direction in conjunction with the operation of the reaping clutch lever is connected to a connecting rod that moves forward and backward in response to the detection of the presence or absence of a grain culm by the sensor bar, and is located almost directly above the rotation axis of the shifter. A pair of coil springs with different pressing loads were coaxially inserted in the axial direction of the control rod inserted into the support projection while being inserted into the support projection provided on the upper part of the shifter plate located. As it is
The control rod is elastically mounted between both sides of a bracket formed into a U-shaped cross section, and the control rod is slid in the axial direction by operating the cutting clutch lever via a pulling wire. An intermittent control device for a reaping clutch. 3. A sifter plate is pivotally mounted on a rotation shaft of a shifter for connecting and disconnecting the reaping clutch, and the shifter plate is linked to detection of the presence or absence of a grain stalk by a sensor bar provided inside a grain stalk raising path. A control rod that connects the connecting rod that moves forward and backward and slides in the axial direction in conjunction with the operation of the reaping clutch lever is inserted into a support protrusion that is rotatably and axially movable on the shifter plate. At the same time, the control rod is bent into a U-shape in cross section while a pair of coil springs having different pressing loads are coaxially fitted with the support projection interposed therebetween in the axial direction of the control rod inserted through the support projection. The bracket is formed so as to be slidable in the axial direction between both sides of the bracket, and the control rod inserted into the support projection is slid in the axial direction by operating the cutting clutch lever via a pulling wire. And reaping Latch intermittent control device. 4. Detection of the presence or absence of a grain culm by a shifter plate that is pivotally mounted on a rotation shaft of a shifter for moving the reaping clutch on and off, and a sensor bar connected to the shifter plate and provided inside a grain culm raising path. A connecting rod that moves forward and backward in conjunction with the control lever, and a control rod that is similarly connected to the shifter plate and slides in the axial direction in response to the operation of the cutting clutch lever,
The control rod is inserted through a support projection provided on the shifter plate, and a pair of coil springs having different pressing loads are coaxially arranged in the axial direction of the control rod inserted through the support projection. While being fitted, the control rod is elastically slidably mounted on both sides of the bracket formed by bending the control rod into a U-shaped cross section, and a switching hook engageable with the shifter plate is provided between the control rods. When the shifter plate is turned to the disengagement position or the contact position of the reaping clutch in conjunction with the on / off clutch operation of the reaping clutch lever, and the operation of the reaping clutch lever is fixed at a predetermined position, A cutting clutch, characterized in that the shifter plate is rotated to a cutting position or a contacting position of a cutting clutch by an advancing and retreating operation of a connecting rod in conjunction with detection of presence or absence of a grain stem by a sensor bar. Of intermittent control device.