JP3210492B2 - Mowing grass clogging detection device in the mowing machine transport section - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for detecting clogged grass in a mowing machine transport unit.

[0002]

2. Description of the Related Art Conventionally, as one form of a mowing machine, a mowing section is connected to a position below a traveling section capable of self-running via a connecting mechanism, and a lower case of a transport section is connected to the mowing section. There is one that transports cut grass urged by a slower to a grass collecting case provided at the rear of the aircraft through a duct pipe connected to the slower case.

[0003]

However, when the mowing grass has a lot of moisture, such as when the grass is wet, the mowing grass sticks to the inner wall surface of the duct pipe or the lower case, and obstructs the flow of the mowing grass. The flowing grass was entangled with the grass, and the flowing state of the grass gradually deteriorated, and eventually the grass was frequently clogged. .

[0004] Further, during mowing work in a place with a high grass height or a place where the vegetation density of grass is high, a large amount of cut grass may flow from the mowing part into the slower case and clog the slower case and the duct pipe.

In such a state, if the mowing machine is immediately operated to reduce the amount of cutting by, for example, slowing down the speed of the mowing machine, clogging does not occur. In many cases, grass was clogged up inside the lower case.

[0006]

According to the present invention, a mowing section is arranged below a self-propelled traveling section, and a starting end of a duct pipe is connected to a thrower case attached to one side of the mowing section.
Connected to the grass collecting case at the end of the duct pipe, the grass cut in the mowing section is introduced into the thrower case, the grass is urged by the thrower in the thrower case, and the grass is cut into the grass collecting case through the duct pipe. In a mowing machine configured to be conveyed, a sensor unit is disposed at a mowing grass inflow portion of a mowing grass case, and the sensor unit includes a sensor rod that can be tilted in a mowing grass flow direction on an inner wall surface of the mowing grass case at the mowing grass inflow portion. Protrude, interlockingly connect a sensor switch that turns ON / OFF by tilting the sensor rod to the sensor rod, connect the sensor switch to the display unit,
The display unit is operated by turning on / off the sensor switch by tilting of the sensor rod due to the flow of the grass passing through the grass inflow section, and furthermore, the sensor rod is urged in the upstream direction of the grass flow. It is an object of the present invention to provide a device for detecting a mowing grass clogging of a mowing machine transport unit, wherein a spring is provided in such a manner that a biasing force of the spring can be changed. Further, in the present invention, the sensor rod protruding from the cut grass inflow portion of the grass collection case is positioned in the interior space of the grass collection case immediately below the sensor rod in a state where the sensor rod is tilted to the downstream side of the flow of cut grass. It is also characterized in that it is configured so that the part directly below the rod is open.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described with reference to the drawings.

A shown in FIG. 1 is a mower equipped with a transport unit mounting structure according to the present invention, in which a mowing unit 2 is connected via a connecting mechanism 3 to a position directly below a self-propelled traveling unit 1. At the same time, an elevating mechanism 4 is interposed between the traveling unit 1 and the coupling mechanism 3 so that the mowing unit 2 can be moved up and down between the mowing work position where the mowing unit 2 is in contact with the ground and the raised non-working position. A grass collecting case 5 is attached to the rear end, and a conveying unit 6 is interposed between the grass collecting case 5 and the mowing unit 2, and the grass cut by the mowing unit 2 is transferred by the conveying unit 6. And the same grass is stored in the grass collection case 5.

As shown in FIG. 1, the traveling unit 1 has a motor unit 11 at a front portion on a vehicle body frame 10 and a driving unit 12 at an intermediate position.
The fuel tank 13 and the battery 14 are mounted on the rear, the left and right front wheels 15, 15 are mounted on the front of the body frame 10, and the left and right rear wheels 16, 16 are mounted on the rear with the rear axle case. 17
Mounting via.

As shown in FIG. 1, the motor unit 11 includes an engine 20, a radiator 21, an air cleaner 22, and the like.

A hydrostatic transmission (HST) 24 operatively connected to the front of the rear axle case 17 is operatively connected to the engine 20 via a drive shaft 25.
Are interlockingly connected via a transmission mechanism 26.

As shown in FIG. 1, the operating section 12 has a handle column 27 standing upright behind the body frame 10 immediately behind the air cleaner 22 of the prime mover section 11, and a handle 28 is attached to the upper end thereof. Immediately behind the handle 28, a seat 29 is placed directly above the fuel tank 13 via a seat support frame 30. 31 is the accelerator pedal, 32 is the brake pedal,
33 is a gearshift lever, 34 is a mowing section elevating lever, and 35 is a grass collecting section opening / closing lever.

The left and right sides and the rear of the handle column 27 are covered with a handle column cover 40, and the lower left and right sides and the rear of the handle column cover 40 are covered with a vehicle body cover 41.

The mowing section 2 includes, as shown in FIGS.
The left and right mowing blades 46 and 47 are arranged at the left and right positions in a box-shaped mowing unit cover 45 having an open lower side, and the central mowing blade 48 is positioned slightly forward between the two mowing blades 46 and 47. The mower blades 46, 47, and 48 are rotatably mounted on the ceiling wall 45a of the mower cover 45 so that the rotary shafts 49, 50, and 51 can rotate substantially vertically. Pulley 5 attached to the section
The transmission belt 55 is wound in a relaxed state between 2, 53 and 54, and the transmission belt 55 is tensioned by the tension mechanism 56 so that all the grass cutting blades 46, 47 and 48 can be interlocked.

The rotation support shaft 51 of the central mowing blade 48 is provided.
The upper end of the ceiling wall of the mowing cover 45 as shown in FIG.
An input gear case 57 is attached to the upper end of the rotation support shaft 51 so as to protrude outward from the outside 45a, and the terminal end of the transmission mechanism 26 is operatively connected to the input gear case 57.

As shown in FIG. 3, the upper end of the rotary support shaft 50 of the right mowing blade 47 is projected upward from the ceiling wall 45a of the mowing cover 45, and is conveyed to the upper end of the rotary support shaft 50. An output gear case 58 for transmitting power to the unit is attached.

Also, at the lower edge of the front side of the mowing cover 45,
As shown in FIG. 3, the left and right front mowing guide plates 80, 81 are provided in a horizontal state. 82 is a reinforcing pipe.

With the above construction, when the mowing blades 46, 47, 48 are rotated, the mowing blades cut the grass near the ground surface, and the cut grass is cut into the front inner wall surface of the mowing cover 45 and the left and right front mowing guide plates 80, 47. 81 It moves rightward along the upper surface, and is guided to the cut grass discharge portion 45b formed on the right side of the cut grass cover 45.

Also, at the front and rear of the mowing cover 45,
Front and rear fittings 94, 95 fixed to the front and rear portions of the reinforcing pipe 82
The front gauge wheel 78 and the rear gauge wheel 79 are mounted via the through holes so that the vertical position can be adjusted.

As shown in FIG. 3 and FIG.
A grass information room is provided at the grass discharge section 45b on the right side of the grass mowing section cover 45.
The lower pipe 84 communicates and connects the lower case 84 via 83, and a duct pipe connecting portion 85 extending rearward and upward is formed on the upper rear side of the lower case 84, and the starting end of the duct pipe 86 is connected and connected,
The end is connected to a grass collection case 5 at the rear of the fuselage.

As shown in FIG. 4, the cut grass guide chamber 83 has a substantially square introduction port formed by a peripheral wall 87 on the side where the cut grass cover 45 is connected.
An inclined guide wall 90 is formed from a square inlet 88 toward a suction opening 89 of a substantially semi-circular lower case 84.

Inside the lower case 84, a four bladed lower 91 is provided. As shown in FIG. 3, the output gear case 58 is interlocked to the lower shaft 92 of the lower 91 via an interlocking mechanism 59. are doing.

According to the above configuration, the cut grass transported to the cut grass discharge portion 45b of the cut grass cover 45 is sucked into the lower case 84 through the cut grass guide chamber 83, and is urged rearward and upward by the rotation of the lower 91. Then, it is conveyed to the grass collecting case 5 via the duct pipe connecting portion 85 and the duct pipe 86 and stored in the grass collecting case 5.

Then, as shown in FIG.
In the vicinity of the cut grass inflow portion j, the sensor unit S of the cut grass clogging detection device according to the present invention is installed.

As shown in FIG. 5, the sensor section S is provided with a sensor rod on the wall surface of the grass collecting case 5 near the cut grass inflow section j.
S1 is inserted so as to be tiltable in the flow direction of the mowing grass, so that the inner end of the sensor rod S1 protrudes from the inner wall surface of the grass collecting case 5, and between the outer end of the sensor rod S1 and the outer wall of the grass collecting case 5. A spring S2 is interposed between the sensor S1 and the spring S2 to urge the inner end of the sensor rod S1 in the upstream direction of the flow of the mowing grass. This means for replacing the spring S2 or changing the mounting position of the spring S2 on the sensor rod S1 side. Can change the urging force.

A sensor switch S3 which is turned on when the rod S1 is in the neutral position and turned off when the rod S1 is tilted to the downstream side of the flow of cut grass is interlockingly connected to the sensor rod S1.

The sensor section S may be installed at the end of the duct pipe 86.

Then, as shown in FIG. 6, the sensor switch S3 is set to the above-mentioned mower clutch lever switch 37.
And the panel switch 38 and the warning lamp 39 of the display unit p, and when both the mower clutch lever switch 37 and the panel switch 38 are ON, the sensor switch S3
When it is turned on / off, the warning lamp 39 of the display unit p blinks. In the figure, b is a power supply, and m is a main switch.

According to the above configuration, if there is no cut grass in the lower case 84 or the duct pipe 86 and there is cut grass passing through the cut grass inflow portion j, the cut grass is caught on the sensor rod S1 and resists the urging of the spring S2. Then, the sensor rod S1 is tilted to the downstream side of the flow of the cut grass, the sensor switch S3 linked with the tilting of the sensor rod S1 is kept in the OFF state, and the warning lamp 39 of the display unit p is not turned on.

However, when the grass begins to be clogged in the lower case 84 and the duct pipe 86, there is no grass passing through the grass inflow section j, and the sensor rod S1 returns to the neutral position and the sensor switch S3 is turned on. The warning lamp 39 on the display unit p is turned on. Also, by changing the urging force of the sensor rod S1, the relationship between the blinking of the warning lamp 39 on the display unit p and the degree of grass clipping can be adjusted. The lamp 39 can be turned on.

Therefore, the presence or absence of cut grass in the lower case 84 and the duct pipe 86 and the time when the cut grass begins to be clogged can be detected by the blinking of the warning lamp 39 on the display section p.

In the embodiment of the present invention, the panel switch 38 is turned on and the mower clutch lever is turned on.
When 36 is inserted, the respective mowing blades 46, 47, 48 of the mowing section 2 rotate to cut the grass, and the cut grass is cut in the mowing section case 45 by the rotation of the respective mowing blades 46, 47, 48 to release the mowing grass. From 45-1, it is carried into the inside of the lower case 84, and the cut grass is urged by the rotation of the lower 91 of the lower case 84, and the urged grass is conveyed to the grass collecting case 5 at the rear of the aircraft through the duct pipe 86. You.

At this time, since both the mower clutch lever switch 37 and the panel switch 38 are ON, the sensor switch S3 is energized.

Then, the lower case 84 and the duct pipe
When the cut grass is not clogged in 86 and the cut grass is flowing normally to the grass collection case 5, the flowing cut grass hits the sensor rod S1, and the sensor rod is pressed against the bias of the spring S2.
Tilt S1 downstream. Due to the tilt of the sensor rod S1, the sensor switch S3 is kept in the OFF state, and the warning lamp 39 of the display unit p is not turned on.

However, the lower case 84 and the duct pipe
When clogging of the cut grass begins to occur during 86, the cut grass does not reach the vicinity of the cut grass inflow portion of the grass collecting case 5. Therefore, the sensor rod S1 returns to the neutral position, the sensor switch S3 is turned on, and the warning lamp 39 on the display unit p is turned on.

Further, the urging force of the sensor rod S1 in the upstream direction is changed by means such as the replacement of the spring S2 or the change of the spring mounting position, so that the warning lamp 39 of the display part p blinks and the degree of the grass clipping of the sensor rod S1 is reduced. By adjusting the relationship, it is possible to detect this state at an early stage of cutting grass clogging.

If both the mower clutch lever switch 37 and the panel switch 38 are not ON, the sensor switch S3 is not energized, so that the warning lamp 39 of the display unit p is not turned on unnecessarily. 38 off
By doing so, the warning lamp 39 can be kept off when it is not necessary even during the mowing operation.

[0038]

As described above, when clogging of the cut grass starts to occur in the duct pipe or the lower case, the flow of cut grass in the cut grass inflow section of the grass collecting case connected to the end of the duct pipe in which the sensor unit is installed. Then, the warning lamp on the display unit is turned on to notify the above clogging. Further, based on the above-mentioned notification, the speed change device of the traveling unit is operated, the traveling speed is reduced to reduce the amount of mowing at the mowing unit, and the amount of mowing flowing into the thrower case is reduced, thereby reducing the amount of mowing. Clogging can be prevented beforehand. Moreover, in the present invention, since a spring for urging the sensor rod in the upstream direction of the cutting grass flow is connected to the sensor rod so that the urging force of the spring can be changed, the spring is displayed by changing the urging force of the spring. The relationship between the blinking of the warning lamp of the section and the degree of grass clipping can be easily adjusted.

Further, in the present invention, the internal space of the grass collecting case is positioned directly below the sensor rod in a state where the sensor rod protruding from the grass inflow portion of the grass collecting case is tilted to the downstream side of the flow of the grass. In this way, the cut grass that is flowing is in contact with the sensor rod while the cut grass is flowing. Immediately after cutting, the grass rod falls toward the interior space of the grass collecting case, and the sensor rod does not become a resistance of the flowing grass, and the grass can smoothly flow into the grass collecting case. It is possible to prevent cutting grass clogging near the sensor rod).

[Brief description of the drawings]

FIG. 1 is a side view of a mower equipped with a mowing grass clogging detection device according to the present invention.

FIG. 2 is an enlarged side view of a mowing section.

FIG. 3 is a cross-sectional plan view of a mowing section.

FIG. 4 is a partial cross-sectional side view showing a transport unit.

FIG. 5 is an explanatory sectional view showing a structure of a sensor unit.

FIG. 6 is a circuit diagram showing a circuit configuration of the cutting grass clogging detection device.

[Explanation of symbols]

 A mowing machine j mowing grass inflow section p display section S sensor section S1 sensor rod S3 sensor switch 1 running section 2 mowing section 5 grass collecting case 6 transport section 84 slower case 91 lowerer 86 duct pipe

Claims (2)

(57) [Claims] 1. A mowing part (2) below a self-propelled traveling part (1).
And connect the starting end of the duct pipe (86) to the lower case (84) attached to one side of the mowing section (2), and the grass collecting case (5) at the end of the duct pipe (86). Connect to the mowing section
The grass cut in (2) is introduced into the lower case (84),
In the mower (A), which is configured to urge the grass by the thrower (91) in the thrower case (84) and transport the grass into the grass harvesting case (5) through the duct pipe (86), A sensor section (S) is arranged at the cut grass inflow section (j) of (5), and the sensor section (S) is a grass collection case (5) of the cut grass inflow section (j).
Sensor rod (S1) that can be tilted in the flow direction of mowing on the inner wall surface
, And the sensor switch (S3), which is turned on / off by tilting the rod (S1), is linked to the sensor rod (S1), and the sensor switch (S3) is connected to the display (p). The sensor rod (S
The display (p) is activated by turning on / off the sensor switch (S3) due to the tilting of (1), and the same is applied to the sensor rod (S1).
To urge the sensor rod (S1) in the upstream direction of cutting grass flow
Change the biasing force of the spring (S2).
A mowing grass clogging detecting device for a mowing machine transport unit, wherein the mowing mower transporting unit is connected to the mowing machine. 2. A mowing section (2) below a traveling section (1) capable of self-propelling.
, And attached to one side of the mowing section (2)
Connect the starting end of the duct pipe (86) to the
Connect the grass collection case (5) to the end of the pipe (86)
The grass cut in (2) is introduced into the lower case (84),
In the lower case (84) of the lower case (84), the cutting grass is urged.
To the grass collection case (5) via the duct pipe (86).
In the mower (A), the sensor section (S) is installed at the mowing grass inlet (j) of the grass collecting case (5).
And the sensor part (S) is a grass collection case (5) of the cut grass inflow part (j).
Sensor rod (S1) that can be tilted in the flow direction of mowing on the inner wall surface
To the sensor rod (S1) and tilt the same rod (S1).
Therefore, the sensor switch (S3) that turns on and off is linked and
Connect the sensor switch (S3) to the display (p) and
The sensor rod (S
Displayed by turning ON / OFF the sensor switch (S3) due to the tilting of 1).
Activate the indicator (p), and cut grass in the grass collection case (5)
The sensor rod (S1) protruding into the section (j)
Grass just below the sensor rod (S1) while tilting to the flow side
By positioning the internal space of the case (5),
Configure so that the part immediately below the salrod (S1) is open.
Cutting clogging detection device for a mowing machine transport unit, characterized in that
Place.