JPH09308309A - Sulky administration machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable the regulation of the sensitivity for sensing the lifting and lowering of a tillage working machine in a sulky administration machine composed so as to keep the above-ground height of the tillage working machine constant. SOLUTION: This sulky administration machine is obtained by connecting a tillage working machine 2 through a lifting and lowering link mechanism 3 to the rear of a mobile machine 1, installing a rear cover 33 in a rear edge of a tillage cover unit of the tillage working machine 2 so as to freely and vertically rotate, interposing hanger rods 34 between the rear cover 33 and the tillage cover unit so as to freely and vertically slide, on the other hand, disposing a changeover valve for changing over the lifting and lowering cylinder of the lifting and lowering link mechanism 3 in a machine body frame 4, making a valve changeover arm 47 capable of rotating and operating the changeover valve act thereon, enabling the changeover operation of the changeover valve, then interposing each feedback wire 40 between the valve changeover arm 47 and the hanger rods 34, fitting plural wire installing parts at an interval in the rotation radial direction of the valve changeover arm 47 therein and attaching the end of the feedback wire 40 to each wire installing part so as to enable the free replacement.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a passenger management machine.

[0002]

2. Description of the Related Art Conventionally, as a riding management machine, for example, a tilling work machine is movably connected to the rear of a traveling machine through a lifting link mechanism, and a rear cover is provided at a rear end edge of a tilling cover body of the tilling work machine. Is mounted rotatably up and down, and a hanger rod is vertically slidably interposed between the rear cover and the tillage cover body in conjunction with the vertical rotation operation of the rear cover. A feedback wire is provided between them, and the vertical movement of the rear cover is linked to the lifting movement of the lifting link mechanism via the hanger rod and the feedback wire to maintain a constant plowing depth by the tiller. There is something I did.

[0003]

However, in the above-mentioned conventional riding management machine, since the wire mounting portion of the feedback wire is formed only on the hanger rod, the degree of pulling of the feedback wire can be changed. Therefore, the lifting sensitivity of the lifting link mechanism with respect to the rear cover could not be adjusted.

Further, the support structure for the hanger rod is also complicated, making it difficult to manufacture a passenger control machine, and the number of parts is large, so that the weight of the machine body cannot be reduced.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention connects a tilling work machine to the rear of a traveling machine so as to be able to move up and down through a lifting link mechanism, and a tilling cover body of the tilling work machine. A rear cover is rotatably attached to the rear edge of the rear end of the rear cover, and a hanger rod is vertically slidably interposed between the rear cover and the cultivating cover body in conjunction with the vertical movement of the rear cover. A switching valve for switching the lifting cylinder of the lifting link mechanism is provided on the frame,
A valve switching arm that rotates is acted on the switching valve to enable the switching operation of the switching valve, and a feedback wire is provided between the valve switching arm and the hanger rod so that the upper and lower parts of the rear cover are In the riding management machine configured to keep the plowing depth of the tilling machine constant by linking the raising and lowering movements of the raising and lowering link mechanism with the hanger rod and the feedback wire in conjunction with the rotating movement, the valve switching arm has a plurality of wires. The mounting parts should be spaced apart in the radial direction of rotation of the valve switching arm, and the ends of the feedback wires should be removably mounted on each wire mounting part so that the lifting sensitivity of the lifting link mechanism with respect to the rear cover can be adjusted. I am trying.

Further, a plurality of wire mounting portions are provided on the hanger rod at intervals in the extending direction of the hanger rod,
The end portion of the feedback wire is removably attached to each wire attachment portion so that the working range of the hanger rod can be adjusted.

Then, the tilling machine is provided with a tilling frame connected to the lifting link mechanism, and a pair of support arms are extended in a downwardly inclined direction from the tilling frame in the left-right width direction,
While attaching the tillage cover to the tips of both support arms, the hanger rod stays project from the respective support arms to the upper rear, and the middle part of the hanger rod is slidably attached to the tip of each hanger rod stay. I have decided.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION In a riding management machine according to the present invention, a tilling work machine is movably connected to a rear side of a traveling machine which is capable of self-propelling via a lifting link mechanism. The front end of the tilling frame that extends in the front-rear direction is connected to the mechanism, the base ends of a pair of left and right cylindrical support arms are attached to the upper part of the tilling frame, and both support arms are inclined downward in the left-right width direction. Along with the extension, the tip ends of both support arms are formed in a flat shape, and the tiller cover bodies stretched laterally from the middle part of the side wall of the main body are attached to the tip ends.

A hanger rod stay is provided in the middle of each of the support arms so as to project rearward and upward, and an upper end edge of the rear cover is rotatably attached to the rear end edge of the tilling cover body so that the left and right sides of the rear cover can be rotated. The base ends of a pair of left and right hanger rods are rotatably attached to the side portions, and the middle part of the hanger rod is rotatably attached to the tip end of the hanger rod stay.

In addition, a plurality of wire attachment portions are formed at the tip of one hanger rod along the extension direction of the hanger rod, a feedback wire is attached to the wire attachment portion, and the feedback wire is operated to move up and down the link mechanism. It is interlockingly connected to the lifting operation unit provided for this purpose.

The lifting and lowering operation section has a lever support shaft rotatably mounted on the machine body frame, and a lifting lever attached to the right end of the lever support shaft, and a valve switching arm rotatable back and forth in the middle of the lever support shaft. On the other hand, the switching valve of the lifting cylinder of the lifting link mechanism is arranged at the upper rear position of these, and the switching spool is projected forward from the switching valve, and the rear end of the valve switching arm is attached to the switching spool. By rotating and pressing the valve action part formed on
By switching the switching valve, the lifting cylinder is expanded and contracted so that the tilling implement can be moved up and down via the elevator link mechanism, so that the tilling depth of the tiller is maintained at a constant level. It was done.

Moreover, the upper and lower wire mounting portions are formed at the tip of the valve switching arm at intervals in the radial direction of rotation of the valve switching arm, and the feedback wire can be replaced with the upper and lower wire mounting portions.

Therefore, a plurality of wire mounting portions are provided on the valve switching arm at intervals in the radial direction of rotation of the valve switching arm, and the end portions of the feedback wires are removably mounted on each wire mounting portion. By changing the feedback wire to a different wire attachment portion, the turning radius of the valve switching arm can be changed by the feedback wire, and the lifting sensitivity of the lifting link mechanism with respect to the rear cover can be adjusted.

Further, a plurality of wire mounting portions are provided on the hanger rod at intervals in the extending direction of the hanger rod,
Since the tip of the feedback wire is removably attached to each wire attachment part, by changing the feedback wire to a different wire attachment part, it is possible to change the operation range of the switching valve by the feedback wire, and the cultivating work. The control range of the tilling depth by the machine can be adjusted.

Moreover, the tilling work machine is provided with a tilling frame connected to the lifting link mechanism, and a pair of support arms are extended in a downward slope in the left-right width direction from the tilling frame, and the tiller cover bodies are provided at the tips of both support arms. In addition to mounting, the hanger rod stay projects from each support arm rearward and upward, and the middle part of the hanger rod is attached to the tip of each hanger rod stay so that it can slide up and down, so the hanger rod support structure is simple. Support structure
The number of parts can be reduced, and the weight of the machine can be reduced.

[0016]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a view showing a riding management machine A according to the present invention. The riding management machine A has a plowing work machine 2 via a lifting link mechanism 3 behind a traveling machine 1 capable of self-propelling. Connect
The cultivator work 2 is configured to be able to move up and down.

The traveling machine 1 is provided with a driving part 5 on the front part of the machine body frame 4 and a prime mover part 6 and a transmission part 7 on the rear part thereof, while the lower part of the driving part 5 is located on the left and right sides of the machine body frame. The front wheels 8,8 are attached via the wheel stays 9,9, and the left and right rear wheels 10,10 are attached to the mission unit 7.
Are linked together via rear axle cases 11,11. Reference numeral 12 denotes a transmission mechanism interposed between the prime mover section 6 and the mission section 7. The transmission mechanism 12 is a clutch for connecting / disconnecting the transmission of power by making the transmission belt 12a tensionable / relaxable by the tension arm 12b. It also has functions.
13 is a fuel tank and 14 is a bonnet.

The operating unit 5 is, as shown in FIGS. 1 and 2,
A casing body 15 having a floor surface portion, a seat support portion, and left and right rear fender portions is stretched on the machine body frame 4, and a pair of left and right step bodies 16, 16 are provided at the front edge of the casing body 15.
Is extended in a state of being inclined toward the front upper side, the handle column 17 is erected at the front center of the casing body 15, and the steering shaft 18 in the handle column 17 is made substantially orthogonal to the step body 16. The steering wheel 18 is installed upright in this state, and the handle 19 is attached to the upper end of the steering shaft 18. Step bodies 16 and 16 have guard pipes 16a and 16a on the outer edges.
And install both guard pipes 16a, 16a on the handle column 17
The front portion of the traveling machine 1 is formed small and strong so that it can be turned in a small direction. Reference numeral 20 is a forward / reverse speed change lever arranged at the left side position of the handle column 17, and 21 is a brake pedal arranged at the right side position of the handle column 17.

The driver section 5 has a seat 22 placed at the rear position of the handle column 17, and on the right side of the seat 22,
An elevating lever 23, a rotary clutch lever 24, a stop valve lever 25, and a depth lever 26 are arranged intensively in order from the front.

As shown in FIG. 3 and FIG. 4, the tiller implement 2 connects the front end of a tilling frame 59 extending in the front-rear direction to the elevating link mechanism 3 and vertically extending below the tiller frame 59. The upper end of the tilling power transmission case 27 is attached, the tilling shaft 28 is projected in the left-right width direction at the lower end of the tilling power transmission case 27, and a plurality of tilling claws 29 are attached to the same tilling shaft 28.
A pair of left and right cylindrical support arms on top of the tilling frame 59.
Attach the base ends of 30,30 and extend both support arms 30,30 to the left and right side in a downwardly inclined shape.
Tip ends of 30, 30 are formed in a flat shape, and a tillage cover body 31 is attached to the tip end portion so as to extend laterally from the middle portion of the side wall of the tillage transmission case 27 to the left and right sides.

Hanger rod stays 32, 32 are provided at the midpoints of the support arms 30, 30 so as to project rearward and upward, while the upper end edge of the rear cover 33 is vertically rotated at the rear end edge of the tillage cover body 31. The rear ends of the pair of left and right hanger rods 34, 34 are attached to the left and right sides of the rear cover 33 via the mounting brackets 35, 35 so that they can be rotated up and down, and at the tip of the hanger rod stays 32, 32. Midway portions of the hanger rods 34, 34 are vertically slidably mounted on the formed U-shaped mounting portions 32a, 32a. 36 is a side cover and 37 is a rear cover biasing spring. Although the hanger rod stay 32 is formed in the middle of the support arm 30 in the present embodiment, the hanger rod stay 32 is not limited to the middle of the support arm 30, and the hanger rod stay 32 is formed at the tip of the support arm 30. May be formed.

Moreover, the base end of the wire mounting arm 38 is attached to the tip of the left hanger rod 34, the wire mounting arm 38 is extended to the left side, and the tip is moved in the vertical direction which is the extension direction of the hanger rod 34. The upper and lower wire mounting parts 38a, 38b to form the upper and lower wire mounting parts 38a and 38b, and the lower wire mounting part 38b with the mounting pin 39b facing rearward. The feedback wire 40 is protrusively provided so as to be replaceable. In this embodiment, the base end of the feedback wire 40 is attached to the attachment pin 39b of the lower wire attachment portion 38b. Reference numeral 32b is a wire fixing stay formed on the mounting portion 32a of the hanger rod stay 32.

The feedback wire 40 is interlockingly connected to an elevating operation section 41 provided for elevating the elevating link mechanism 3.

As shown in FIGS. 5 and 6, the raising / lowering operation portion 41 is attached to the shaft support bracket 42 attached to the machine body frame 4,
A tubular support body 43 is attached with its axis facing in the left-right width direction, and a lever support shaft 44 extending in the left-right width direction is rotatably inserted in the tubular support body 43. The lower end of the lever support 45 is attached to the right end, and the lower end of the lift lever 23 is attached to the upper end of the lever support 45.

A valve actuating arm 46 is fixedly attached to a midway portion of the lever support shaft 44, and a valve switching arm 47 is attached rotatably back and forth through a boss portion 48, while the rear upper position of these is provided. A switching valve 49 of a lifting cylinder (not shown) of the lifting link mechanism 3 is disposed in the switching spool 49a so that the switching spool 49a projects forward from the switching valve 49, and the switching spool 49a is provided with the valve operating arm 46. Valve action part 46a and valve switching arm 47 formed on the rear upper part
The valve action portion 47a formed at the rear end portion is rotated and pressed, and the switching valve 49 is switched, whereby the lifting cylinder is expanded and contracted, and the tiller implement 2 is moved up and down. It is possible to raise and lower through. 57 is an urging spring.

Moreover, at the tip of the valve switching arm 47,
The upper and lower wire mounting portions 52a, 52b are formed at intervals in the radial direction of rotation of the valve switching arm 47, and the feedback wire 40 can be replaced with the upper and lower wire mounting portions 52a, 52b. The feedback wire 40 is attached to the lower wire attachment portion 52b.

Further, a temporary fixing body 50 is fixedly attached to the left end portion of the lever support shaft 44, and the lower end portion of the temporary fixing body 50 is extended rearward and downward to extend the arm portion 50a for automatic neutral return. A wire 51 for automatic neutral return is provided between the tip of the arm 50a for automatic neutral return and the lifting cylinder, and a temporary fixing cam is provided on the upper end surface of the temporary fixing body 50. Part 50b is formed, and the temporary fixing cam part 50b is raised and the temporary fixing concave part 50c is formed.
A neutral temporary fixing recess 50d and a descending temporary fixing recess 50e are formed. Reference numeral 58 is a biasing spring.

Further, the front end of a temporary fixing arm 54 as a temporary fixing action member extending rearward and upward is freely swingable up and down via a boss 55 on a temporary fixing arm support shaft 53 attached to the machine body frame 4. The rolling roller 56 is rotatably attached to the rear end portion of the temporary fixing arm 54, and the rolling roller 56 is brought into contact with the temporary fixing cam portion 50b of the temporary fixing body 50.

In this way, when the raising / lowering lever 23 is shifted to the raising operation position (a), the rolling roller 56 engages with the raising temporary holding recess 50c, so that the raising / lowering lever 23 can be temporarily fixed. Similarly, when the lifting lever 23 is shifted to the neutral operation position (b) and the lowering operation position (c), respectively, the rolling roller 56 causes the neutral temporary fixing recess 50d,
Engage in the recesses 50e for temporary lowering
It is possible to temporarily fix 23.

When the elevating lever 23 is operated to the raising operation position (a), the valve operating portion of the valve operating arm 46 is operated.
46a presses the switching spool 49a, switches the hydraulic circuit so that the switching valve 49 operates so that the lifting cylinder shortens, and the lifting cylinder pulls the wire 51 for automatic neutral return for automatic neutral return. The wire 51 rotates the arm 50a for automatic neutral return counterclockwise to move the lever support shaft 44a.
The elevating lever 23 is automatically returned to the neutral operation position (b) via the valve, and the valve operating arm 46 is returned to the neutral position so that the switching valve 49 can be switched to the neutral position.

The passenger management machine A is configured as described above and is used as described below.

That is, when the field is cultivated by the tiller 2, the tiller 2 is lowered by the lifting link mechanism 3 and the rear end of the rear cover 33 is brought into contact with the ground (see FIG. 6). The field is cultivated by rotating the cultivating claw 29.

Then, when the tilling implement 2 further descends from the state shown in FIG. 6, that is, when the tilling depth becomes deeper, the rear cover 33 pivots upward, and the hanger rods 34,3.
4 moves up. Then, the feedback wire 40 attached to the tip of the hanger rod 34 is pulled,
The valve switching arm 47 rotates clockwise in FIG. 5,
The valve action part 47a presses the switching spool 49a of the switching valve 49, the switching valve 49 performs switching operation, operates the lifting cylinder, and raises the tilling implement 2 by the lifting link mechanism 3.

On the other hand, when the tiller 2 is raised and the plowing depth becomes shallow, the rear cover 33 rotates downward and the hanger rods 34, 34 move downward. Then, the feedback wire 40 attached to the tip of the hanger rod 34 is slackened, and the valve switching arm 47 is rotated counterclockwise in FIG. 5, contrary to the above, the lifting link mechanism 3 causes the tilling implement 2 to move. Let it descend.

In this way, the riding management machine A is capable of automatically maintaining a constant plowing depth.

At that time, compared with the case where the feedback wire 40 is attached to the lower wire attaching portion 52b of the valve switching arm 47, the feedback wire 40 is attached to the case where the feedback wire 40 is attached to the upper wire attaching portion 52a. The turning radius of the valve switching arm 47 can be increased, and when the feedback wire 40 is attached to the upper wire attachment portion 52a, even if the rear cover 33 is slightly turned, the feedback wire 40 can be rotated.
Is pulled, and the lifting link mechanism 3 lifts and lowers the tiller implement 2. That is, by replacing the feedback wire 40 with the upper and lower wire mounting portions 52a and 52b, the rear cover 33
The lifting sensitivity of the lifting link mechanism 3 with respect to can be adjusted.

Further, as compared with the case where the feedback wire 40 is attached to the lower wire attaching portion 38b of the tip of the hanger rod 34, the operation range of the hanger rod 34 is smaller when the feedback wire 40 is attached to the upper wire attaching portion 38a. It can be set to the upper side, that is, to the side where the plowing depth is made shallow, and the operating range to the switching valve 49 can be made variable. That is, by changing the feedback wire 40 to the upper and lower wire mounting portions 38a and 38b, the operation range of the feedback wire 40 to the switching valve 49 can be changed, and the control range of the tilling depth by the tiller 2 can be changed. can do.

Further, since the hanger rod 34 is attached by the hanger rod stays 32, 32 formed integrally with the support arms 30, 30 for supporting the tillage cover body 31, the support structure of the hanger rod 34 can be simplified. The support structure can be provided, the number of parts can be reduced, and the weight of the machine body can be reduced.

[0040]

The present invention is embodied in the form described above and has the following effects.

(1) In the present invention according to claim 1, a plurality of wire mounting portions are provided on the valve switching arm at intervals in the radial direction of rotation of the valve switching arm, and each wire mounting portion has an end portion of the feedback wire. Since the valve is attached removably, it is possible to change the turning radius of the valve switching arm by the feedback wire by changing the feedback wire to a different wire attachment part, which increases the lifting sensitivity of the lifting link mechanism with respect to the rear cover. It can be adjusted.

(2) In the present invention according to claim 2, a plurality of wire mounting portions are provided on the hanger rod at intervals in the extending direction of the hanger rod, and the tip of the feedback wire can be freely attached to each wire mounting portion. Because it is installed,
By changing the feedback wire to a different wire attachment portion, the operating range of the feedback wire to the switching valve can be made variable, and the control range of the tilling depth by the tiller can be adjusted.

(3) In the present invention according to claim 3, the tilling work machine is provided with a tilling frame connected to the lifting link mechanism,
A pair of support arms are extended downward in the left-right width direction from the cultivating frame in a downwardly inclined manner, the cultivating cover bodies are attached to the tips of both support arms, and hanger rod stays project from the respective support arms rearward and upward, Since the middle part of the hanger rod is attached to the tip of each hanger rod stay so that it can slide up and down, the hanger rod support structure can be a simple support structure, the number of parts can be reduced, and the machine body is lightweight. Can be converted.

[Brief description of drawings]

FIG. 1 is a side view of a passenger management machine according to the present invention.

FIG. 2 is a plan view of the same.

FIG. 3 is a side view of the cultivator.

FIG. 4 is a rear view of the same.

FIG. 5 is a side view of a lifting operation unit.

FIG. 6 is a front view of the same.

[Explanation of symbols]

 A Passenger management machine 1 Traveling machine 2 Tillage work machine 3 Lifting link mechanism 4 Body frame 23 Lifting lever 27 Tilling power transmission case 30 Support arm 31 Tilling cover body 32 Hanger rod stay 33 Rear cover 34 Hanger rod 38a Upper wire mounting part 38b Lower wire mounting Part 40 Feedback wire 47 Valve switching arm 52a Upper wire mounting part 52b Lower wire mounting part 59 Tillage frame

Claims (3)

[Claims] 1. A tilling implement (2) is movably connected to the rear of the traveling implement (1) through an ascending / descending link mechanism (3), and the tiller cover body (31) of the tiller implement (2) is connected. The rear cover (3
3) Mounted vertically so that the hanger rod (34) can be installed between the rear cover (33) and the tillage cover body (31).
It is installed so that it can slide up and down in conjunction with the vertical rotation operation of 3) .On the other hand, a switching valve (49) for switching the lifting cylinder of the lifting link mechanism (3) is provided on the machine frame (4) and The switching valve (49) is actuated by the rotating valve switching arm (47) to enable the switching operation of the switching valve (49), and the valve switching arm (47) and the hanger rod.
Insert the feedback wire (40) between (34) and
The vertical movement of the rear cover (33) is linked to the vertical movement of the lifting link mechanism (3) via the hanger rod (34) and the feedback wire (40) to maintain a constant plowing depth by the tiller (2). In the passenger management machine configured to hold the valve switching arm (47), the valve switching arm (47) has a plurality of wire mounting parts (52a, 52a).
b) at intervals in the turning radius direction of the valve switching arm (47), attach the ends of the feedback wires (40) to the wire attachment parts (52a, 52b) in a freely replaceable manner, and attach the rear cover (33 ), The lift sensitivity of the lifting link mechanism (3) can be adjusted. 2. A tilling implement (2) is movably connected to the rear of the traveling implement (1) through a lifting link mechanism (3), and the tiller cover body (31) of the tilling implement (2) is connected. The rear cover (3
3) Mounted vertically so that the hanger rod (34) can be installed between the rear cover (33) and the tillage cover body (31).
It is installed so that it can slide up and down in conjunction with the vertical rotation operation of 3) .On the other hand, a switching valve (49) for switching the lifting cylinder of the lifting link mechanism (3) is provided on the machine frame (4) and The switching valve (49) is actuated by the rotating valve switching arm (47) to enable the switching operation of the switching valve (49), and the valve switching arm (47) and the hanger rod.
Insert the feedback wire (40) between (34) and
The vertical movement of the rear cover (33) is linked to the vertical movement of the lifting link mechanism (3) via the hanger rod (34) and the feedback wire (40) to maintain a constant plowing depth by the tiller (2). In the passenger management machine configured to be retained on the hanger rod (34), a plurality of wire attachment parts (38a, 38b) are attached to the hanger rod (34).
With a space in the extension direction of the hanger rod (34),
Feedback wire on each wire attachment part (38a, 38b)
A passenger management machine characterized in that the end portion of (40) is removably attached so that the operating range of the switching valve (49) can be changed. 3. A tilling implement (2) is movably connected to the rear of the traveling implement (1) via an ascending / descending link mechanism (3), and the tiller cover body (31) of the tiller implement (2) is connected. The rear cover (3
3) Mounted vertically so that the hanger rod (34) can be installed between the rear cover (33) and the tillage cover body (31).
It is installed so that it can slide up and down in conjunction with the vertical rotation operation of 3) .On the other hand, a switching valve (49) for switching the lifting cylinder of the lifting link mechanism (3) is provided on the machine frame (4) and The switching valve (49) is actuated by the rotating valve switching arm (47) to enable the switching operation of the switching valve (49), and the valve switching arm (47) and the hanger rod.
Insert the feedback wire (40) between (34) and
The vertical movement of the rear cover (33) is linked to the vertical movement of the lifting link mechanism (3) via the hanger rod (34) and the feedback wire (40) to maintain a constant plowing depth by the tiller (2). In the riding management machine configured to be retained at the cultivating machine, the cultivating work machine (2) is provided with the cultivating frame (59) connected to the lifting link mechanism (3), and a pair of lateral support is provided from the cultivating frame (59). Extend the arms (30,30) in a downward slope,
Tillage covers (31) are attached to the tips of both support arms (30, 30), and hanger rod stays (32) project from the respective support arms (30) toward the rear upper side, and each hanger rod stay (32) ) A passenger management machine characterized in that the middle part of the hanger rod (34) is attached to the tip of (1) so that it can slide up and down.