JP2022085156A - Grass mower - Google Patents

Abstract

To provide a grass mower having an engine as a drive source, capable of keeping a substantially horizontal state of an engine, not only when the grass mower is inclined in a lateral direction but also when the grass mower is inclined in a cross direction.SOLUTION: A grass mower comprises: a main body; an engine; at least a left and right pair of drive wheels; and a mower blade power source actuating a mower blade. The grass mower further comprises: a conversion mechanism for converting rotation of a rotation output shaft of the engine into a liquid pressure or power; a rotation drive source which is driven by output from the conversion mechanism, and rotates the drive wheels; and a tilt mechanism for integrally, tilting the engine and the conversion mechanism, with respect to the main body, in at least a lateral direction and a cross direction of the main body.SELECTED DRAWING: Figure 1

Description

Patent Law Article 30, Paragraph 2 Application Applicable 6th Railway Technology Exhibition 2019 / 3rd Bridge / Tunnel Technology Exhibition, Makuhari Messe Hall 5, 6, 7, 8 (2-1 Nakase, Mihama-ku, Chiba City, Chiba Prefecture) , November 27-29, 1st year of Reiwa

The present invention relates to a mowing machine, and more particularly to a mowing machine suitable for mowing on slopes such as around railway tracks, roadsides, and slopes beside embankments.

Many of the grass mowers that have been proposed so far are driven by an engine such as a 4-cycle engine. However, if the engine is tilted from the horizontal, the rotation of engine oil and the like becomes poor, and there is a risk that problems such as engine seizure and engine stop due to insufficient fuel supply may occur.

In order to solve these drawbacks, the engine should be tiltably supported around the output shaft of the engine or an axis parallel to the output shaft with respect to the mowing machine body, and even if the mowing machine is tilted on a sloping ground, the tilt should be offset. A mowing machine capable of maintaining an engine in a substantially horizontal state by changing the attitude of the engine has been proposed (Patent Documents 1 to 3).

However, in the above-mentioned conventional mowing machine, when the mowing machine is tilted to the left or right in the traveling direction, the engine can be tilted around the output shaft or an axis parallel to the output shaft to maintain it almost horizontally, but the mowing machine advances. When it is tilted in the front-rear direction with respect to the direction, it has a drawback that the posture of the engine cannot be changed and the engine cannot be maintained in a horizontal state.

For this reason, when mowing grass on a slope such as a slope of a railway track using a conventional example mowing machine, the mowing machine may be advanced in a direction orthogonal to the slope direction and tilted to the left or right. However, there was a restriction that a driving route that did not tilt in the front-back direction had to be selected.

Japanese Unexamined Patent Publication No. 7-312947 Japanese Patent No. 5650972 Japanese Unexamined Patent Publication No. 2017-78783

The present invention has been made in view of the situation of the conventional mower, and in a mower whose drive source is an engine, the engine is used not only when the mower is tilted to the left or right in the traveling direction but also when the mower is tilted in any other direction. The challenge is to provide a mower that can keep the mower almost horizontal.

As a result of diligent research and trial and error to solve the above problems, the present inventors support the engine in a conventional mowing machine so that the engine can be tilted only around the rotation output shaft or the axis parallel to the rotation output shaft. The only thing that could be done was that the engine's rotational output was transmitted to the drive wheels via a mechanical power transmission mechanism, and the mechanical and direct power between the engine's rotational output shaft and the drive wheels. It was found that the degree of freedom in the tilting direction of the engine with respect to the mowing machine body can be dramatically increased by cutting off the transmission relationship.

That is, the present invention is a mowing machine including a main body, an engine, at least a pair of left and right drive wheels, a steering wheel, and a mowing blade power source for operating the mowing blade, and further, rotation of the rotation output shaft of the engine. The engine and the conversion mechanism are integrally integrated with a conversion mechanism that converts The above problem is solved by providing a mowing machine provided with a tilting mechanism for tilting the main body at least around the left-right axis and the front-back axis of the main body.

Further, in the present invention, the tilting mechanism integrally combines the engine and the conversion mechanism with respect to the main body in addition to the rotation of the left-right direction axis and the rotation of the front-back direction axis of the main body. The above problem is solved by providing a mowing machine which is a tilting mechanism capable of tilting around an oblique axis.

In the present specification, "tilt around the left-right axis" means tilt corresponding to so-called pitching, and "tilt around the front-rear axis" means tilt corresponding to so-called rolling. ing. Further, the "tilt around the diagonal axis" literally means the tilt around the axis oriented in the diagonal direction assumed between the left-right axis and the front-back axis.

According to the mowing machine according to the present invention, there is a concern about seizure and fuel supply shortage due to the tilt of the engine even when mowing on slopes around railway tracks or slopes on the side of roads or embankments. There is an advantage that the mowing machine can be run to mow the grass.

It is a top view which shows an example of the mower of this invention. It is a side view which shows an example of the mower of this invention. It is a partial plan view which shows only the part of the rear side main body taken out. FIG. 3 is a cross-sectional view taken along the line xx'of FIG. It is a figure which shows an example of the tilting state of the 1st pallet. FIG. 3 is a cross-sectional view taken along the line yy'in FIG. It is a figure which shows an example of the tilting state of the 2nd pallet. It is a figure which shows the state which attached the handle for transportation to the front body. It is a figure which shows the state which attached the handle for transportation to the rear side main body. It is a top view which shows another example of the mower of this invention. It is a top view which shows the further example of the mower of this invention.

Hereinafter, the present invention will be described in detail with reference to the drawings, but it goes without saying that the present invention is not limited to those illustrated.

FIG. 1 is a plan view showing an example of a mower according to the present invention, and FIG. 2 is a side view. In FIGS. 1 and 2, 1 is a mower according to the present invention. The mower 1 has a frame-shaped main body 2. The main body 2 is composed of two parts, a front main body 2a and a rear main body 2b, and the front main body 2a and the rear main body 2b are detachably connected by a detachable connecting mechanism 3a, 3b, 3c, 3d. (However, the connecting mechanism 3c does not appear in FIGS. 1 and 2). The mower 1 shown in FIGS. 1 and 2 is composed of a front main body 2a and a rear main body 2b that are detachably connected, but the front main body 2 and the rear main body 2b are integrally configured. Of course, one main body 2 may be formed.

4a and 4b are a pair of left and right drive wheels, and 5a and 5b are steering wheels. Reference numeral 6 is an engine, and reference numeral 7 is an accompanying unit including a fuel tank and the like attached to the engine 6. Reference numeral 8 is a rotary output shaft of the engine 6, and the rotary output shaft 8 is mechanically connected to the conversion mechanism 9.

The conversion mechanism 9 is a device that converts the rotation of the rotary output shaft 8 of the engine 6 into hydraulic pressure or electric power, and any device that can convert the rotation of the rotary output shaft 8 into hydraulic pressure or electric power. It may be a device having a mechanism or structure. Typically, it is preferable to use a hydraulic pump such as a hydraulic pump that converts the rotation of the rotary output shaft 8 into hydraulic pressure such as hydraulic pressure, and a generator that converts the rotation of the rotary output shaft 8 into electric power as the conversion mechanism 9. ..

10a and 10b are connection circuits, and 11a and 11b are rotational drive sources for rotationally driving the drive wheels 4a and 4b, respectively. The rotation drive sources 11a and 11b are connected to the conversion mechanism 9 via the connection circuits 10a and 10b, respectively. The hydraulic pressure or electric power generated by the conversion mechanism 9 is supplied to the rotary drive sources 11a and 11b by the connection circuits 10a and 10b, and the drive wheels 4a and 4b are rotationally driven.

For example, when the conversion mechanism 9 is a hydraulic pump that generates hydraulic pressure, a hydraulic motor such as a hydraulic motor that is rotationally driven by hydraulic pressure is used as the rotary drive sources 11a and 11b. As the connection circuits 10a and 10b, a flexible pipeline for transmitting hydraulic pressure, such as a hose, is used. The return path of the working liquid returning from the hydraulic motors of the rotary drive sources 11a and 11b to the hydraulic pump of the conversion mechanism 9 is not shown.

On the other hand, when the conversion mechanism 9 is a generator that generates electric power, electric motors that are rotationally driven by electric power are used as the rotational drive sources 11a and 11b, and in that case, the connection circuits 10a and 10b are used. Electric conductors, which are the usual means of transmitting electric power, are used.

In any case, in the mowing machine 1 according to the present invention, the output of the engine 6 is not directly transmitted to the drive wheels 4a and 4b via the mechanical power transmission mechanism, but is once hydraulic pressure or electric power in the conversion mechanism 9. After being converted to Rotate the wheels 4a and 4b. Therefore, in the mower 1 of the present invention, the positional relationship between the engine 6 and the drive wheels 4a and 4b can be freely changed regardless of the orientation of the rotary output shaft 8 of the engine 6. Therefore, the posture of the engine 6 with respect to the main body 2 can be freely changed not only when the mower 1 is tilted around an axis parallel to the rotary output shaft 8 but also when it is tilted around other axes. It is possible to keep the engine 6 in a horizontal state.

The rotational drive sources 11a and 11b for rotationally driving the drive wheels 4a and 4b have a rotational direction switching means for switching the rotational direction of the drive wheels 4a and 4b, a speed adjusting means for adjusting the rotational speed, and a rotational torque for adjusting the rotational torque. Adjustment means are provided, and by operating these appropriately or remotely by a signal from the outside, the mowing machine 1 can be moved forward or backward, the traveling speed can be changed, or the slope of the work place can be tilted. It is possible to achieve stable running of the mowing machine 1 by changing the rotational torque of the drive wheels 4a and 4b according to the angle and the condition of the ground.

It is desirable that the rotational torque for rotating the drive wheels 4a and 4b can be adjusted separately for the left and right drive wheels 4a and 4b. When the rotational torques of the drive wheels 4a and 4b can be adjusted separately, the drive wheels located below the inclination when the mowing machine 1 of the present invention travels while tilting the slope around the front-rear axis. By making the rotational torque of the mowing machine larger than the rotational torque of the drive wheel located on the upper side of the inclination, there is an advantage that the mowing machine 1 can be effectively prevented from sliding down in the inclined direction and can be advanced in the target direction. can get. Similar effects and advantages can be obtained by making the ground contact width of the drive wheel located on the lower side of the tilt larger than the ground contact width of the drive wheel located on the upper side of the tilt instead of the rotational torque.

12a and 12b are mowing blades, and 13a and 13b are mowing blade power sources for operating the mowing blades 12a and 12b, respectively. In this example, the mowing blades 12a and 12b are mowing blades of a type that mow the grass by rotating, but may be mowing blades that mow the mowing by an operation other than rotation.

In this example, the mowing blade power sources 13a and 13b are electric motors, and are connected to the batteries 15a and 15b, which are power sources, via connection lines 14a and 14b, respectively. However, the mowing blade power sources 13a and 13b are not limited to electric motors, and any power source that can operate the mowing blades 12a and 12b to mow the grass may be used, and the rotary drive source 11a may be used. , 11b may be a hydraulic motor such as a hydraulic motor.

When the conversion mechanism 9 is a generator, the electric power for driving the mowing blade power sources 13a and 13b may be supplied from the conversion mechanism 9 instead of the batteries 15a and 15b. When the conversion mechanism 9 is a hydraulic pump such as a hydraulic pump, a hydraulic motor may be used as the mowing blade power sources 13a and 13b, and the hydraulic pressure for driving the motor may be supplied from the conversion mechanism 9. ..

Reference numeral 16 is a steering mechanism, which includes an actuator and a power source (not shown), operates based on a human operation and / or an external signal, changes the directions of the steering wheels 5a and 5b, and changes the traveling direction of the mower 1. It can be changed as appropriate.

Reference numeral 17 is a control device. The control device 17 includes means for receiving a control signal and a position information signal from the outside. The control device 17 is connected to the engine 6, the conversion mechanism 9, the rotary drive sources 11a and 11b, the mowing blade power sources 13a and 13b, and the steering mechanism 16 via appropriate connecting means. As a result, the control device 17 can control the operation of the mower 1 by controlling the operation of each connected member based on the control signal from the outside, the position information signal, or its own judgment.

FIG. 3 is a partial plan view showing only the portion of the rear main body 2b taken out. In the figure, 2bs are subframes laid between the main frames of the rear main body 2b. In FIG. 3, reference numeral 18 is a first pallet, and the first pallet 18 is connected to the first tilting axis ax1 via a connecting body 19 attached to one side side thereof (upper side side in the drawing). There is. Reference numerals 20a and 20b are bearing mechanisms for supporting the first tilting shaft ax1 at both ends thereof, respectively, and include a drive device (not shown). The drive device of the bearing mechanisms 20a and 20b can be operated by a human operation or a control signal to tilt the coupling body 19 and the first pallet 18 together with the first tilting shaft ax1 around the axis of the first tilting shaft ax1. can.

As shown in FIG. 3, since the first tilting shaft ax1 is parallel to the rotational output shaft 8 of the engine 6, when the drive device of the bearing mechanisms 20a and 20b is operated, the first pallet 18 is attached to the rear main body 2b. On the other hand, it tilts around an axis parallel to the rotation output shaft 8 of the engine 6. The second pallet 21 is present on the first pallet 18, and the engine 6 is arranged on the second pallet 21 as described later. In this example, the first tilting shaft ax1 and the rotational output shaft 8 of the engine 6 are both parallel to the front-rear axis of the main body 2, so that the bearing mechanisms 20a and 20b and their driving device are connected. Together with 19 and the first pallet 18, it corresponds to a tilting mechanism that tilts the engine 6 and the conversion mechanism 9 around the anteroposterior axis of the main body 2.

Reference numeral 21 is a second pallet arranged on the first pallet 18, and the engine 6 and the accompanying unit 7 are mounted on the second pallet 21. The second pallet 21 is connected to the second tilting axis ax2 via a connecting body 22 attached to one side side thereof (the left side side in the drawing). 23a and 23b are bearing mechanisms that pivotally support the second tilting shaft ax2 at both ends thereof, are mounted on the first pallet 18, and include a drive device (not shown). The drive device of the bearing mechanisms 23a and 23b is operated by a human operation or a control signal to tilt the connecting body 22 and the second pallet 21 together with the second tilting shaft ax2 around the axis of the second tilting shaft ax2. Can be done.

As shown in FIG. 3, since the second tilting shaft ax2 is orthogonal to the rotational output shaft 8 of the engine 6, when the drive device of the bearing mechanisms 23a and 23b is operated, the second pallet 21 is the first pallet 18 On the other hand, with the engine 6 and the accompanying unit 7 mounted, the engine 6 is tilted around an axis orthogonal to the rotational output shaft 8. In this example, since the second tilting shaft ax2 is parallel to the left-right axis of the main body 2, the bearing mechanisms 23a and 23b and the driving device thereof, together with the connecting body 22 and the second pallet 21, are the engine 6 and the conversion mechanism. 9 corresponds to a tilting mechanism that tilts the main body 2 around the left-right axis.

FIG. 4 is a cross-sectional view taken along the line xx'of FIG. As can be seen in FIG. 4, on the subframe 2bs of the rear main body 2b, the first pallet 18 whose one side is attached to the first tilting shaft ax1 via the connecting body 19 is a bearing mechanism 20a, 20b. It is installed in a state where it is supported by the shaft.

FIG. 5 is a diagram showing an example of a tilted state of the first pallet 18. As shown in FIG. 5, when the mowing machine 1 travels on the inclined slope E in a direction orthogonal to the inclined direction, the drive wheels 4a and 4b move in the left-right direction (that is, the main body 2) in the traveling direction according to the inclination of the slope E. At this time, when the drive device provided in the bearing mechanisms 20a and 20b supporting the first pallet 18 is operated, the first pallet 18 is rearward as shown by the arrow in the figure. The first tilting shaft ax1 is tilted around the axis of the first tilting shaft ax1 with respect to the side main body 2b, and the first pallet 18 is maintained in a horizontal state together with the second pallet 21 and the engine 6 and the accompanying unit 7 arranged on the side main body 2b. be able to.

FIG. 6 is a cross-sectional view taken along the line yy'in FIG. As can be seen in FIG. 4, on the first pallet 18, the second pallet 21 whose one side is attached to the second tilting shaft ax2 via the connecting body 22 is pivotally supported by the bearing mechanisms 23a and 23b. It is installed in a state of being.

FIG. 7 is a diagram showing an example of the tilted state of the second pallet 21. As shown in FIG. 7, when the mowing machine 1 travels down the slope E with an inclination, the main body 2 of the mowing machine 1 including the rear main body 2b descends forward in the front-rear direction (that is, the left-right axis of the main body 2). At this time, when the drive device provided in the bearing mechanisms 23a and 23b supporting the second pallet 21 is operated, the second pallet 21 is moved with respect to the first pallet 18 as shown by the arrow in the figure. The engine 6 arranged on the second pallet 21 is tilted around the axis of the second tilting shaft ax2 together with the accompanying unit 7 and the conversion mechanism 9 connected to the rotary output shaft 8 of the engine 6. It can be maintained in a horizontal state.

The drive device for tilting and driving the first pallet 18 and the second pallet 21 to a horizontal state against the tilt of the mower 1 includes a drive device combining an electric motor and a gear mechanism, an electric cylinder, and a hydraulic cylinder. An appropriate drive device such as the above can be used. Further, the power for operating these drive devices may be supplied in the form of hydraulic pressure or electric power from the above-mentioned conversion mechanism 9, or may be supplied from the battery 15a or 15b, or from another power supply device. Is also good. In any case, these drive devices are tilting mechanisms that integrally tilt the engine 6 and the conversion mechanism 9 with respect to the main body 2 at least around the left-right axis and the front-back axis of the main body 2. become.

In the above-described example, the first pallet 18 and the second pallet 21 are each around the axis of the first tilt axis ax1 and the second tilt axis ax2 located near one side of the pallet 18. The first tilting shaft ax1 may be provided substantially in the center of the first pallet 18 in parallel with the rotation output shaft 8 of the engine 6, and similarly, the second tilting shaft ax2 may be provided. It may be provided in a direction orthogonal to the rotation output shaft 8 of the engine 6 at substantially the center of the second pallet 21.

Further, instead of providing two pallets, the first pallet 18 and the second pallet 21, a single pallet having a hemispherical convex portion on the lower surface is prepared, and a hemispherical protrusion that fits with the hemispherical convex portion is prepared. By providing a recess in the frame of the rear main body 2b and engaging the hemispherical recess with the hemispherical convex portion provided on the lower surface of the pallet, a single recess is provided with respect to the rear main body 2b. The pallet may be attached so as to be tiltable. The relationship between the hemispherical concave portion and the convex portion may be reversed, and the hemispherical concave portion is provided on the lower surface of a single pallet, and the hemispherical convex portion engaged with the hemispherical concave portion is provided on the rear main body 2b. You can do it.

In this case, since the pallets are supported by the rear main body 2b by the hemispherical uneven portions that slidably engage with each other, the pallets can be tilted 360 degrees in any direction with respect to the main body 2. For example, by arranging appropriate drive means such as an electric cylinder or a hydraulic cylinder between the four corners of the pallet and the rear main body 2b and appropriately expanding and contracting these, the pallet can be moved to the left-right direction axis of the mowing machine 1. The engine 6 installed on the pallet regardless of the direction in which the mowing machine 1 is tilted by tilting not only around the cylinder or the anteroposterior axis, but also around the right diagonal axis and around the left diagonal axis. Can always be maintained in a horizontal state together with the accompanying unit 7 and the conversion mechanism 9.

The driving force of the driving means for tilting the pallet can be obtained from an appropriate device. For example, when the drive means is a hydraulic cylinder and the conversion mechanism 9 is a hydraulic pump, the hydraulic pressure to be the driving force may be obtained from the conversion mechanism 9, and the drive means is an electric cylinder and the conversion mechanism. When the 9 is a generator, the hydraulic pressure that becomes the driving force may be obtained from the conversion mechanism 9 or an appropriate battery.

Further, the driving means such as the electric cylinder or the hydraulic cylinder that tilts the pallet may be manually operated, but like other devices mounted on the mower 1, the control device 17 may or may not operate it at its own discretion. It is desirable to be controlled and operated by a control signal received from the outside.

In any case, there are no particular restrictions on the specific configuration and structure of the tilting mechanism that tilts the engine 6 together with the conversion mechanism 9 around the left-right axis of the main body 2, around the front-rear axis, and further around the diagonal axis. However, the desired tilting motion may be realized by any configuration, structure, and mechanism.

When suitable, the mower 1 according to the present invention includes a tilt sensor that detects the tilt of the main body 2, the engine 6, or the conversion mechanism 9. The output from the tilt sensor is sent to the control device 17, and is sent from the control device 17 to the tilt mechanism as a control signal of the tilt mechanism that tilts the pallet. As a result, even when the mower 1 is tilted back and forth, left and right, or in another direction, the posture of the engine 6 is controlled so as to maintain a substantially horizontal state. The attitude control of the engine 6 based on the tilt sensor and its output signal is the same in the mower 1 provided with the first pallet 18 and the second pallet 21 described above.

8 and 9 show a state in which the mower 1 according to the present invention is disassembled into a front main body 2a and a rear main body 2b after the work is completed, and a transport handle 24 or 25 is attached to each of the front main body 2a and the rear main body 2b. .. Since the handles 24 and 25 for transportation are provided with a connecting mechanism that engages with a part of the connecting mechanisms 3a to 3d left in the front main body 2a or the rear main body 2b, respectively, the handles 24 and 25 are provided. Is easy and reliable to attach to and remove from the front main body 2a and the rear main body 2b.

As described above, the main body 2 of the mowing machine 1 according to the present invention is composed of the front main body 2a and the rear main body 2b, both of which are detachably connected by the connecting mechanisms 3a to 3d, and thus assembled at the mowing work site. Is also easy. Moreover, after the mowing work, the front main body 2 and the rear main body 2b are disassembled, and by further attaching the handles 24 and 25, the steering wheels 5a and 5b or the drive wheels 4a and 4b are used as wheels, which is desired in the manner of a rear car. Can be transported to the location of.

FIG. 10 is a plan view showing another example of the mower according to the present invention. The mower 1 of this example is different from the examples described so far in that the front main body 2a and the rear main body 2b are connected by the rotary connecting mechanism 26 instead of the connecting mechanisms 3a to 3d. Since the front main body 2a and the rear main body 2b are relatively rotatably connected around the front-rear axis of the main body 2 by the rotary connection mechanism 26, the pair of left and right steering wheels 5a and 5b are the drive wheels 4a. Independent of 4b, the front main body 2a can be tilted around the front-rear axis of the main body 2.

As described above, the pair of left and right steering wheels 5a and 5b can be tilted independently of the drive wheels 4a and 4b, together with the front main body 2a, around the front-rear axis of the main body 2. Therefore, for example, according to the present invention. Even when the mowing machine 1 approaches the slope from a flat place, only the steering wheels 5a and 5b located in front are tilted around the front-rear axis of the main body 2 in response to the inclination of the slope. Since it can come into contact with the slope, there is an advantage that all the wheels of the steering wheels 5a and 5b and the drive wheels 4a and 4b come into contact with the ground and the stable running of the mowing machine 1 is maintained.

FIG. 11 is a plan view showing still another example of the mower according to the present invention. The mower 1 of this example is different from the examples described so far in that the front main body 2a and the pair of left and right steering wheels 5a and 5b are connected by the rotary connecting mechanism 27. Since the front main body 2a and the steering wheels 5a and 5b are relatively rotatably connected around the front-rear axis of the main body 2 by the rotary connecting mechanism 27, the pair of left and right steering wheels 5a and 5b are the drive wheels 4a. Independent of 4b, each axle can be tilted around the front-rear axis of the main body 2.

In this way, the pair of left and right steering wheels 5a and 5b can be tilted independently of the drive wheels 4a and 4b, together with the axle, around the front-rear axis of the main body 2, and thus the same as the above-mentioned example. For example, even when the mowing machine 1 according to the present invention approaches the slope from a flat place, only the steering wheels 5a and 5b located in front correspond to the inclination of the slope, and the front-rear direction axis of the main body 2 Since it can tilt around and come into contact with the slope, all the wheels of the steering wheels 5a and 5b and the drive wheels 4a and 4b come into contact with the ground, which has the advantage of maintaining stable running of the mowing machine 1. be.

The mowing machine according to the present invention is provided with a means for receiving a control signal and a position information signal from the outside in a preferred embodiment thereof, and is arranged by remote operation from the outside or at a GPS signal or a construction site. It is possible to efficiently mow the target construction site by automatic driving that is executed by determining the traveling route and traveling range by itself based on the signal from the position signal transmitting device or the like.

According to the mowing machine according to the present invention, the engine can be kept horizontal even on a slope such as around a railroad track, a roadside, or a slope on the side of an embankment. You can run the mower and mow the grass without doing anything. The present invention greatly contributes to the efficiency of mowing work at the actual work site, and its industrial applicability is great.

1 Mowing machine 2 Main body 3a to 3d Coupling mechanism 4a, 4b Drive wheel 5a, 5b Steering wheel 6 Engine 7 Engine accompanying unit 8 Rotating output shaft 9 Conversion mechanism 10a, 10b Connection circuit 11a, 11b Rotating drive source 12a, 12b Mowing blade 13a, 13b Mowing blade Power source 14a, 14b Connection line 15a, 15b Battery 16 Steering mechanism 17 Control device 18 First pallet 19, 22 Connection body 20a, 20b, 23a, 23b Bearing mechanism 21 Second pallet 24, 25 Handle 26, 27 rotation Coupling mechanism ax1 1st tilt axis ax2 2nd tilt axis E slope

Claims (10)

A mowing machine equipped with a main body, an engine, at least a pair of left and right drive wheels, a steering wheel, and a mowing blade power source for operating the mowing blade.
Further, a conversion mechanism that converts the rotation of the rotary output shaft of the engine into hydraulic pressure or electric power, and a rotary drive source that is driven by the hydraulic pressure or electric power output from the conversion mechanism to rotate the drive wheels.
A mower having a tilting mechanism that integrally tilts the engine and the conversion mechanism with respect to the main body at least around the left-right axis and the front-back axis of the main body. The tilting mechanism integrally combines the engine and the conversion mechanism with respect to the main body around the left-right axis of the main body and around the front-rear axis, and also around the diagonal axis of the main body. The mowing machine according to claim 1, which is a tilting mechanism capable of tilting. The mower according to claim 1 or 2, wherein the conversion mechanism is a hydraulic pump or a generator, and the rotary drive source is a hydraulic motor or an electric motor. The mowing blade power source is a hydraulic motor or an electric motor driven by the hydraulic pressure or electric power output from the conversion mechanism, or an electric motor driven by electric power supplied from the electric power source mounted on the main body. The mowing machine according to any one of claims 1 to 3, which is a motor. A tilt sensor for detecting the tilt of the main body or the engine or the conversion mechanism is provided, and a control means for controlling the tilt mechanism so that the engine maintains a substantially horizontal state based on the output of the tilt sensor is provided. The mowing machine according to any one of claims 1 to 4. The pair of left and right drive wheels are a pair of drive wheels in which a left or right drive wheel having a relatively wide contact width and a right or left drive wheel having a relatively narrow contact width are combined. The mower described in either. 1. The described mowing machine. The main body is composed of at least a front main body including the steering wheels, at least the pair of left and right drive wheels, and a rear main body including the engine, and the front main body and the rear main body are detachably connected to each other. The mower according to any one of claims 1 to 7, further comprising a mechanism. The mowing machine according to any one of claims 1 to 8, wherein the steering wheels are a pair of left and right steering wheels, and are mounted independently of the driving wheels so as to be tiltable around an axial axis in the front-rear direction of the main body. The engine, the conversion mechanism, the rotary drive source, the mowing blade power source, based on the receiving means for receiving the control signal and / or the position information signal from the outside and the received control signal and / or the position information signal. The mowing machine according to any one of claims 1 to 9, further comprising a control means for controlling the operation of the tilting mechanism or the direction of the steering wheel.

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