JP6719744B2 - Self-propelled mower - Google Patents

Description

The present invention relates to a mower. More specifically, the present invention relates to a self-propelled mower, which enables a worker to remotely mow the grass.

The "multi-faced mower in a mower" described in Patent Document 1 is a "mowing machine in which a rotary cutting blade 9 for plane cutting is mounted in front of a machine equipped with a prime mover 2" The side cutting rotary cutting blades 15 and 15 are arranged so that the vertical position can be adjusted and the tilt angle can be adjusted, and the side cutting rotary cutting blades 15 and 15 can be respectively attached to the prime mover. Multi-faced mowing device in a mower that is configured to be detachable together with the flexible interlocking coupling bodies 21 and 21 that transmit the power of 2. (Practical model registration claim range).
Therefore, "By removing the side surface cutting blades 15 and 15, this machine can perform a single surface cutting work with a narrow cutting width of the conventional structure of the plane cutting blade body 9 alone, as well as the side surface cutting blade bodies 15 and 15. By attaching either one of them, it is possible to perform two-sided mowing work on a flat surface and one slope, which is convenient for mowing work on banks and ditches, and by installing both of them, the width of the plane mowing work can be significantly expanded. The efficiency is remarkably improved, and it is convenient because it is possible to mow three planes at once on a flat surface and two slopes.Especially, when this machine is used for mowing ridges, ridges with different upper plane widths, field scenes and ridge tops are used. The ridges with different heights can be adjusted by changing the vertical position of the side cutting blades 15 and 15 and, in addition, the inclination angle Θ of the side cutting blades 15 and 15 against the change of the inclination angle of both slopes. Θ can be changed and adjusted, and the cutting work on the upper plane of the ridge and both slopes can be performed reliably and efficiently at the same time” (“Detailed description of the device”).

The "edge-edge mower" described in Patent Document 2 is a "machine (7) equipped with traveling wheels (4), provided with a horizontal cutting blade (14) protruding forward along the ridge upper surface (9a)," The inclined cutting blades (16) inclined along the ridge side surfaces (9b) and (9c) are provided on both right and left sides of the horizontal cutting blade (14), and the horizontal cutting blade (14) and the inclined cutting blade (16) are provided. In a vehicle equipped with an engine (2) for driving, the horizontal cutting blade (14) and the inclined cutting blade (16) are provided at positions displaced from each other in the front-rear direction, and the engine (2) is seen from a side view. Edge mowers provided vertically above or in the vicinity of the traveling wheels (4)"("Claims").
Therefore, "Because the horizontal cutting blade and the inclined cutting blade are provided so as to be displaced in the front-rear direction with respect to each other, there is little interference between the horizontal cutting blade and the inclined cutting blade due to the change of the inclination angle of the inclined cutting blade, and the inclined cutting blade is reduced. There is an effect that the tilt adjustment range of can be set to be relatively large, and that one ridge-edge mower can handle more ridges. The horizontal mower can be compactly stored by storing it on the rear side.On the other hand, the engine is located above the traveling wheels, so that the weight of the engine is relatively large on the traveling wheels, and the edge mower is located. There is also an effect that the vehicle can be stably driven.” (“Effect of invention”).

Patent document 3 "Mowing machine having multiple cutting blades" discloses that a plurality of power take-off shafts 2a, 2b,... Are projected at the front part of a traveling main body A having left and right wheels 1a, 1b each of which can be vertically adjusted. A plurality of rotary cutting blades 3a, 3b,..., which are installed in front of the traveling main unit A in the lateral direction, are connected to each other by the respective bending support rods 4 so that the rotary cutting blades 3a, 3b,. Each power take-off shaft 2a, 2b,... and each rotary cutting blade 3a, 3b.. Can be bent and expanded by being supported and installed by a bending support rod 5, each stay 6, etc. "A lawn mower having multiple cutting blades, characterized in that they are connected by power transmission through each other."("Claims for utility model registration").
For this reason, "it is possible to change the postures of a plurality of parallel rotary cutting blades 3a, 3b... From a horizontal posture to an inclined posture, and for example, mow the portion from the horizontal plane to the inclined plane on the ridge side of the field all at once. It is possible to adjust the left and right wheels 1a and 1b up and down even on a sloping ground so that the traveling machine A can be operated stably without tilting, and it is possible to mow efficiently with multiple cutting blades, which is preferable. Can be carried out” (“Detailed description of the device”).

The "two-sided mowing machine" described in Patent Document 4 has a "cutting blade mechanism 5 for plane cutting and a cutting blade mechanism 8 for slope cutting on the front side of the machine body 1 to the left and right in front view. In a double-sided mowing machine mounted side by side, the machine body 1 is provided with an assembling machine frame 6 that rotates up and down around a support shaft S in the front-rear direction, and in this, a support shaft W in the up-down direction is installed at the center. A supporting machine frame 7 that rotates back and forth is supported, and the supporting machine frame 7 is mounted with a rotary blade mechanism 80 including a rotary blade 81 having a small diameter and a rotary shaft 82 for rotating the rotary blade 81 in parallel. The cutting blade mechanism 8 for slope cutting is used as a cutting surface.
Therefore, "a support machine in which the cutting blade mechanism 8 for slope cutting is supported by the assembly machine frame 6 that rotates up and down about the support shaft S with respect to the machine body 1 so as to rotate back and forth about the support shaft W. Since the rotary blade mechanisms 80... Consisting of small-diameter rotary blades 81 are arranged in parallel in the frame 7, the power for driving and rotating the rotary blades 81... Can be reduced. By rotating the swivel centering around the spindle W and inclining it in the front-back direction at a desired angle, the action width for mowing the grass is expanded or contracted, so that the width of the slope (high It is possible to adjust the cutting width of the cutting blade mechanism 8 for slope cutting in response to the change in the height without changing the required power. effect").

The "mowing machine and the cutting blade device" described in Patent Document 5 "is capable of not only wide-cutting a plane but also simultaneously cutting a plane and a slope adjacent to each other, and furthermore, there is an obstacle on the slope. A mowing machine and a cutting blade device which can be used as they are and have good workability and handleability" ("summary" "problem"), "riding type traveling machine body (1) and the machine body". A plurality of cutting blades (18, 19, 20, 21) arranged in front of (1) in the left-right direction, and a prime mover (11) for driving the plurality of cutting blades (18, 19, 20, 21). And a mower.” (“Claim 1”).

Japanese Utility Model Publication No. 60-85119 Japanese Patent Laid-Open No. 11-9053 Japanese Utility Model Publication No. 61-77732. JP-A-8-317717 JP, 2000-184813, A

Patent Document 1 "Multi-faced mowing device in a mower" has a problem that it is difficult to take various tilting postures of cutting blades.
In patent document 2 "edge mower", it was difficult to change the positional relationship between the cutting blades.
In Patent Document 3 "Mowing machine having multiple cutting blades", the cutting blades cannot be adjusted in the left-right direction.
In Patent Document 4 "Mowing machine for two-sided cutting", it is difficult to change the cutting width according to the width of the upper surface of the ridge.
In Patent Document 5 "Mowing Machine and Cutting Blade Device", it was difficult to apply to ridge weeding.

Therefore, an object of the present invention is to solve these problems.
INDUSTRIAL APPLICABILITY The present invention reduces interference with a horizontal cutting blade by changing the inclination angle of the inclined cutting blade, makes the inclination adjustment range of the inclined cutting blade relatively large, and copes with more grass cutting such as ridges with one mower. To be able to.
The cutting blades can be tilted in various postures depending on the relative positions of the rotary blades, and a flat surface, both downward inclinations, one side upward inclinations, and the like can be mowed in one step, which enables efficient work. Allow working width to be changed.
The operator can work away from the mower to some extent, is less affected by the scattering of dust and foreign objects, can perform comfortable work, and does not need to operate the handle for steering, which is a burden on the operator's body. Contributes to less labor.

The self-propelled mower of the present invention is
An aircraft having a running part,
It has a cutting blade part for plane cutting provided in the front part of the machine body,
The rotary cutting blade of the cutting blade section,
There are three or more places on the left and right,
The rotary cutting blade located in the center of each of the rotary cutting blades is connected to a link mechanism having a first cutting blade holding arm and a second cutting blade holding arm for attaching the cutting blade portion in the left-right direction. It can be changed by moving the cutting blade left and right rotation axis horizontally around the rotation center,
The rotary cutting blades of the cutting blades located on both the left and right sides of the machine body have a rotating mechanism having a fixed arm, a first arm and a second arm, and the fixed arm extends the first arm and the second arm. Or you can change the tilt angle in the left and right direction by making it contracted,
In the extended state, the cutting blade unit vertically rotates about a vertical rotation center or a rotation axis that is a rotation center provided on the machine body, and follows a grounded surface.
I will provide a.

In addition, the self-propelled mower of the present invention,
The rotary cutting blades of the cutting blade portion provided on at least both the left and right sides can be independently driven,
I will provide a.

In addition, the self-propelled mower of the present invention,
It is possible to change the tread of the running part,
I will provide a.

In addition, the self-propelled mower of the present invention,
The traveling part is electrically driven, and the worker can perform grass cutting work by remote control.
I will provide a.

In addition, the self-propelled mower of the present invention,
The remote operation is an operation unit operated by a worker, which is connected to the machine body by wire.
I will provide a.

In addition, the self-propelled mower of the present invention,
In remote operation, an operation unit operated by an operator operates a control unit provided on the machine body to control the operation of the machine body by a command signal by wireless communication,
I will provide a.

According to the invention,
Since the horizontal cutting blade and the inclined cutting blade are provided so as to be displaced in the front-back direction, there is little interference with the horizontal cutting blade when the inclination angle of the inclined cutting blade is changed, and the inclination adjustment range of the inclined cutting blade is relatively large. One self-propelled mower can handle more ridges.
Further, since the drive source is located above the traveling wheels, the weight of the drive source is applied to the traveling wheels at a relatively large rate, and the self-propelled mower can be stably driven.

The rotary blades can be changed in the left-right direction position, and the rotary blades located on the left and right sides can change the left-right inclination angle. It can be a posture. It is possible to mow a field such as a flat surface, both downward slopes, and one side upward slope in a single process, which enables efficient work. The working width can also be changed.
Further, if the drive of the cutting unit is independent, the drive of the cutting blade when not in use can be stopped. In particular, when the work is performed with one or both of the left and right sides raised, the raised cutting blade can be stopped, so that safe work can be performed.

Since the tread of the traveling part can be changed, it is possible to work in a narrow place, and when traveling on an inclined surface, if it is wide, the falling angle is improved and safe work can be performed.
Since the traveling part is not driven by the engine but is driven electrically, there is less noise and vibration, and since the operator can remotely control it, he or she can work away from the self-propelled mower to some extent, and dust or foreign matter may scatter. It is not easily affected and you can work comfortably. Further, since it is not necessary to operate the handle for steering or the like, the burden on the body of the operator is small, which contributes to light labor.

It is a side view of the plane cutting posture of the self-propelled grass mower of the Example which concerns on embodiment of this invention. It is a front view of the plane cutting posture of the self-propelled grass mower of the Example which concerns on embodiment of this invention. It is a rear view of the plane cutting posture of the self-propelled grass mower of the Example which concerns on embodiment of this invention. It is a front view of a mowing operation state in which a plane and right and left slopes of a ridge of a self-propelled mower according to an embodiment of the present invention are simultaneously mowed. In the mowing work state of the plane and the left and right slopes on the ridge of the self-propelled mower according to the embodiment of the present invention at the same time, the left side slope is an upslope, so the left side reaper [Fig. 4] is a front view in the highest position. It is a partial cross-section top view of the self-propelled mower of the Example which concerns on embodiment of this invention. It is a top view of the state which expanded the central cutting blade and side cutting blade of the self-propelled grass mower of the Example which concerns on embodiment of this invention. FIG. 7 is a bottom view of the self-propelled mower of the example according to the embodiment of the present invention in the state shown in FIG. 6. It is a partial cross-sectional side view containing the central cutting blade in the horizontal ridge of the self-propelled grass mower of the Example which concerns on embodiment of this invention. It is a partial cross-section side view containing the central cutting blade in the state where the cutting blade part was descended during the mowing operation on the ridge on the front side in the traveling direction of the self-propelled mower of the embodiment according to the present invention. It is a partial cross-sectional side view containing the central cutting blade in the state where the cutting blade part was raised during the cutting work on the ridge on the front side in the traveling direction of the self-propelled grass mower of the embodiment according to the present invention. It is a partial cross-sectional side view containing the central cutting blade in the state which raised the cutting blade part most during the mowing work of the self-propelled grass mower of the Example which concerns on embodiment of this invention. It is a partial rear view in the state which raised the left cutting blade most during the mowing operation of the self-propelled grass mower of the Example which concerns on embodiment of this invention. It is a partial rear view when the left cutting blade is made into a horizontal state during the mowing work of the self-propelled grass mower of the example which concerns on embodiment of this invention. It is a partial rear view of the left cutting blade inclining downward during the mowing operation of the self-propelled grass mower of the example according to the embodiment of the present invention. It is a partial rear view of the left cutting blade lowermost inclination state during the reaping work of the self-propelled mower of the example which concerns on embodiment of this invention. It is a side view showing an operation procedure of a knob bolt during a mowing operation on a ridge in a horizontal state in a traveling direction of a self-propelled mower according to an embodiment of the present invention. It is a side view showing the operation procedure of the knob bolt during the mowing work on the ridge on the front side in the traveling direction of the self-propelled grass mower according to the embodiment of the present invention. It is a plane partial cross section figure showing the drive system of the crawler of the self-propelled mower of the example which concerns on embodiment of this invention. It is a rear view showing the adjustment state of the tread of the right and left crawlers of the self-propelled mower of the example which concerns on embodiment of this invention. It is a schematic diagram of the cutting blade posture of the self-propelled grass mower of the Example which concerns on embodiment of this invention. It is a schematic diagram of the cutting blade posture of the self-propelled grass mower of the Example which concerns on embodiment of this invention. It is a schematic diagram of the cutting blade posture of the self-propelled grass mower of the Example which concerns on embodiment of this invention. It is a schematic diagram of the cutting blade posture of the self-propelled grass mower of the Example which concerns on embodiment of this invention. It is a schematic diagram of the cutting blade posture of the self-propelled grass mower of the Example which concerns on embodiment of this invention. It is a schematic diagram of the cutting blade posture of the self-propelled grass mower of the Example which concerns on embodiment of this invention. It is a schematic side view of the working state of the self-propelled mower of the Example which concerns on embodiment of this invention.

An embodiment according to an embodiment of the present invention will be described with reference to the drawings shown in FIGS. 1 to 27.
Reference numeral 11 is a self-propelled mower according to the embodiment of the present invention. Reference numeral 12 is a body of the self-propelled mower 11. A driving battery 13 is mounted on the machine body 12. Reference numeral 14 is a control unit, and 15 is a main body operation unit. Each is installed in the airframe 12. In FIG. 19, reference numeral 16 is a main body frame forming the machine body 12.
Reference numeral 21 is a traveling section of the self-propelled mower 11. The traveling unit 21 is provided below the machine body 12. The traveling unit 21 has a crawler 22 including a left crawler 22a and a right crawler 22b installed in parallel to the traveling direction. The crawler 22 is driven by the drive system 31 shown in FIG.

As shown in FIG. 19, the drive system 31 has the following configuration.
The main body frame 16 has a substantially lateral Y-shaped cross section, and a wide Y-shaped portion faces the traveling direction, and a narrow Y-shaped portion faces rearward in the traveling direction. A crawler 22 is installed on the outer side in the longitudinal direction of the body frame 16.
32 is an electric motor. 321 is a motor case, 322 is a motor rotating shaft, and 323 is a nut. The motor case 321 is provided on the outer periphery of the electric motor 32 and houses the electric motor 32. 324 is a drive sprocket. The drive sprocket 324 is attached along the outer periphery of the motor case 321 with the motor rotation shaft 322 as the center of rotation.

The motor rotation shaft 322 is attached and fixed by a nut 323 to a portion of the main body frame 16 having a substantially Y-shaped cross section at a side end in the traveling direction, which is wide and protrudes outside the crawler 22.
Reference numeral 221 shown in FIG. 19 is a sprocket fitting recess. The sprocket fitting concave portion 221 is provided inside the crawler 22, that is, on the electric motor 32 side in a concave shape. The drive sprocket 324 is fitted in the sprocket fitting recess 221.
The motor rotation shaft 322 of the electric motor 32 is fixed to the main body frame 16, the drive sprocket 324 is fitted in the sprocket fitting recess 221, and the electric motor 32 rotates, the main body of the electric motor 32 and the drive sprocket 324 rotate. Then, the fitted crawler 22 is driven.
The electric motor 32 is installed so as to be located inside the crawler 22 which is a traveling wheel.

In FIG. 19, 33 is a tension sprocket and 331 is a tension sprocket rotating shaft. The tension sprocket 33 is attached around the tension sprocket rotating shaft 331 with the tension sprocket rotating shaft 331 as a rotating shaft.
The tension sprocket rotating shaft 331 is attached to the Y-shaped narrowed end portion, which is the end opposite to the attachment position of the electric motor 32 of the body frame 16 in the crawler 22 which is substantially laterally Y-shaped. The tension sprocket 33 is a driven sprocket and is fitted in the sprocket fitting recess 221 at the rear end with respect to the traveling direction which is a position symmetrical to the sprocket fitting recess 221 in which the drive sprocket 324 attached to the electric motor 32 fits. And the crawler 22 driven by the electric motor 32 is driven.
34 is a tension bolt. The tension bolt 34 urges the tension sprocket 33 toward the sprocket fitting recess 221 into which the tension sprocket 33 is fitted.

Reference numeral 35 is a sliding shaft, and 351 is a fixed pin. Both ends of the sliding shaft 35 are attached and fixed to the right crawler 22b and the left crawler 22a by fixing pins 351.
The sliding shaft 35 is a fixed pin 351 and constitutes a tread changing portion A. In the tread changing section A, the distance between the right crawler 22b located on the right side in the traveling direction and the left crawler 22a located on the left side in the traveling direction is adjusted to change the tread of the traveling section 21 as shown in FIG. It is possible.
That is, when the sliding shaft 35 inserted in the body frame sliding pipe 352 slides in the right crawler 22b and the left crawler 22a, that is, in the width direction, the tread between the right crawler 22b and the left crawler 22a is changed. In this embodiment, the fixing pin 351 is inserted and fixed in the hole, but the sliding shaft 35 may be slid and moved and fixed by the cylinder.

Reference numeral 41 denotes a cutting blade portion for a mower, that is, a cutting blade portion for plane cutting. The cutting blade part 41 for plane cutting is provided in the front part of the body 12 of the self-propelled mower 11.
42 is a rotary cutting blade. The rotary cutting blades 42 of the cutting blade portion 41 are provided at three or more locations in the left-right direction, and four locations in this embodiment. The rotary cutting blade 42 is composed of a horizontal cutting blade 42a, which is a central cutting blade arranged side by side at two central positions, and an inclined cutting blade 42b located on the left and right sides in the traveling direction of the horizontal cutting blade 42a. The inclined cutting blade 42b includes a right cutting blade 42b1 and a left cutting blade 42b2. The inclined cutting blade 42b has a rotation axis located outside the extension line of the left and right widths of the machine body 12.
Reference numeral 46 shown in FIG. 9 is a cutting blade. An electric motor 47 is installed for each cutting blade 46 and drives the cutting blade 46. Therefore, the cutting blades 46 of the rotary cutting blade 42 of the cutting blade portion 41 provided at three or more positions in the left-right direction can be independently driven.
A cutting blade cover 48 covers the upper part of the cutting blade 46.

43 is a cutting blade guide part. The cutting blade guide portion 43 is provided on the lower surface side of the rotary cutting blade 42 of the cutting blade portion 41, and relative to the rotary shaft 44 of the rotary cutting blade 42 via a bearing 45, as shown in FIG. It is rotatable and has a bowl-shaped curved surface with respect to the ground contact surface. The cutting blade guide part 43 does not rotate in conjunction with the cutting blade 46.
Since the ground contact surface is a bowl-shaped curved surface, it is easy to travel while sliding after cutting grass, and there is little obstruction to the forward movement of the self-propelled grass mower, and stable driving can be expected.

In FIG. 9, reference numeral 51 is a link mechanism. The link mechanism 51 shown in FIG. 9 relates to the horizontal cutting blade 42a that is the central cutting blade, and has the following configuration.
52 is a first cutting blade holding arm. The base of the first cutting blade holding arm 52 is attached to the body 12 of the self-propelled mower 11.
Reference numeral 53 is a second cutting blade holding arm. The base of the second cutting blade holding arm 53 is attached to the side of the cutting blade 41 for plane cutting. Reference numeral 54 denotes a cutting blade left/right rotating shaft. The cutting blade left/right rotation shaft 54 is formed in a substantially vertical direction, and connects the tip of the first cutting blade holding arm 52 and the tip of the second cutting blade holding arm 53 so as to be horizontally rotatable. Therefore, as shown in FIGS. 6 to 8, the second cutting blade holding arm 53 can be horizontally moved from the first cutting blade holding arm 52 or the machine body 12.

In FIG. 9, 55 is a stopper pin. 56 is a long hole. The long hole 56 is provided on the side surface of the machine body 12 in an arc shape on the rear side in the traveling direction of the first cutting blade holding arm 52. Reference numeral 58 is the center of vertical rotation. The vertical rotation center 58 is the center of vertical movement of the first cutting blade holding arm 52 and is attached to the machine body 12 side. 57 is an electric cylinder. The electric cylinder 57 is installed between the two crawlers 22 installed in the center of the machine body 12 in parallel in the left-right direction toward the traveling direction, and is expandable and contractable in the traveling direction. The tip of the electric cylinder 57 is fitted into the long hole 56, and the electric cylinder 57 expands and contracts to be guided and moved by the long hole 56.

When the electric cylinder 57 is extended, the tip moves along the elongated hole 56 to the lower portion of the elongated hole 56 that curves toward the cutting blade portion 41 side for the mower. When it is further extended, the front end side of the first cutting blade holding arm 52 is raised with the vertical rotation center 58 as the rotation center. Then, as shown in FIG. 12, the second cutting blade holding arm 53 is lifted.
Conversely, when the electric cylinder 57 is contracted, the tip of the electric cylinder 57 is slidable along the elongated hole 56. That is, the first cutting blade holding arm 52 is vertically rotatable, and the second cutting blade holding arm 53 and the rotary cutting blade 42 connected to the first cutting blade holding arm 52 are vertically movable. Therefore, as shown in FIGS. 10 and 11, the cutting blade portion 41 moves up and down following the irregularities of the ground contact surface with which the cutting blade guide portion 43 is in contact.
FIG. 10 shows the state where the cutting blade part 41 is at the lowest position, and the tip of the electric cylinder 57 is located at the lower end of the elongated hole 56 to prevent the first cutting blade holding arm 52 from rotating downward. ..
In FIGS. 6 to 8, 59 is a long hole. The ends of the first cutting blade holding arm 52 and the second cutting blade holding arm 53 are positioned in the left-right direction, and bolts are inserted and fixed. When the fixing of the bolt is released, the first cutting blade holding arm 52 to the second cutting blade holding arm 53 can move in the horizontal direction around the cutting blade left/right rotation shaft 54 as a rotation center, and the left and right positions of the cutting blade 46 can be obtained. It can be adjusted.

As shown in FIGS. 9 to 12, the first cutting blade holding arm 52 is provided with a ground pressure adjusting means B.
On the side surface side of the first cutting blade holding arm 52, a ground pressure adjusting arm 65 that rotates up and down around the vertical rotation center 58 of the first cutting blade holding arm 52 is provided on the front side of the first cutting blade holding arm 52. It is provided along. The ground pressure adjusting arm 65 is V-shaped with its opening facing forward, and has a stopper pin 55, which is provided at one lower rotating end portion in the horizontal direction orthogonal to the traveling direction, as the first cutting blade holding arm. It is provided in contact with the lower end surface of 52. The arm portion facing upward, which is the other rotation end side, is provided with a plurality of holes for spring engagement in the vertical direction. Further, a ground pressure adjusting mast 66 facing the arm portion and directed upward toward the machine body 12 is similarly provided upright with a plurality of spring hooking holes provided therein. The spring 64 is bridged between the ground pressure adjusting arm 65 side and the ground pressure adjusting mast 66 side. The turning force of the ground pressure adjusting arm 65 is changed depending on the position of the spring 64 in the hole for spring application. As a result, the turning force of the stopper pin 55 provided in contact with the lower end surface of the first cutting blade holding arm 52 to lift the first cutting blade holding arm 52 upward is changed. By changing the turning force, the ground pressure of the cutting blade portion 41 provided in front is changed. Therefore, the required power for cutting can be reduced without being significantly affected by the resistance of the ground pressure when the cutting blade guide portion 43 is working.

In the rotation mechanism relationship of the inclined cutting blade 42b that is the left cutting blade 42b2 shown in FIGS. 13 to 18, 61 is a fixed arm, 62 is a first arm, and 63 is a second arm. The first arm 62 is attached to the machine body 12, and the first arm 62 and the second arm 63 are rotatably attached by a rotation pin 62a. These arms are attached to an inclined cutting blade 42b including a right cutting blade 42b1 and a left cutting blade 42b2, respectively.
The fixed arm 61 is provided with three mounting holes 61a, 61b, and 61c. By selecting each hole and inserting the turning pin into the first arm 62 and the second arm 63, the bent state of the first arm 62 and the second arm 63 can be selected.
In this embodiment, the mutual positional relationship between the first arm 62 and the second arm 63 is adjusted by the fixed arm 61 provided with the three attachment holes 61a, 61b, 61c, but the first arm 62 and the second arm 63 are adjusted. Alternatively, the cylinder may be bridged over and slid by the cylinder to be moved and fixed.

By selecting the mounting hole of the fixed arm 61 and inserting it into the fixing pins of the first arm 62 and the second arm 63, the inclined cutting blade 42b is in the uppermost fixed state shown in FIG. 13, the horizontal fixed state shown in FIG. The vertical rotation shown in FIGS. 15 and 16 can be freely set.

In FIG. 1 and FIG. 17, 73 is a front and rear rotary shaft of the inclined cutting blade 42b, and 71 is a knob bolt. The frame on the side of the inclined cutting blade 42b is rotatably connected to the body 12 side by a rotation shaft 73 in the horizontal direction in the front-rear direction (up and down) and is provided above the rotation shaft 73. The knob bolt 71 is screwed into a fixing hole provided in communication with the side frame and the machine body 12 side to fix the rotation. When the knob bolt 71 is removed, the inclined cutting blade 42b can be rotated back and forth (up and down) around the front and rear rotation shafts 73. By being rotatable, the cutting blade guide portion 43 of the inclined cutting blade 42b rotates up and down in accordance with the grounded surface. When the knob bolt 71 is removed, it is inserted into the knob bolt insertion hole 72 and held.

As shown in the figure, the horizontal cutting blade 42a (central cutting blade) and the inclined cutting blades 42b located on the side (right cutting blade, left cutting blade) can be laterally displaced and adjusted in position.
The rotary cutting blades 42 of the cutting blade portion 41 located on both the left and right sides can change the inclination angle in the left and right direction as shown in FIGS.
Therefore, as for the upper surface of the ridge L, since the central two reams perform mowing, it is possible to mow all three surfaces of the upper surface of the ridge L and the slope of the ridge L in one pass without reciprocating work.

In FIG. 1, FIG. 3, FIG. 6, FIG. 7, etc., 14 is a control unit, and 15 is a main body operation unit.
The traveling unit 21 is electrically driven, and the worker D can perform grass cutting work by remote control.
In the remote operation, as shown in FIG. 27, the operation unit operated by the worker D operates the control unit 14 provided in the machine body 12 for controlling the operation of the machine body 12 by a command signal by wireless communication.
Alternatively, the operation unit operated by the worker D is performed by the operation unit connected to the machine body 12 by wire.

Next, the operation of the self-propelled mower 11 according to this embodiment will be described. As shown in a side view in FIG. 1, a front view in FIG. 2, a rear view in FIG. 3, and a schematic front view in FIG. 21, the self-propelled mower 11 takes a plane mowing posture. At this time, the rotary cutting blade 42 includes a horizontal cutting blade 42a, which is a central cutting blade that is arranged side by side at two central positions, and an inclined cutting blade 42b, which is positioned on the left and right sides in the traveling direction of the horizontal cutting blade 42a. The blade 42b1 and the left cutting blade 42b2 are horizontally installed on the same plane.
FIG. 6 is a plan view at this time, and FIG. 8 is a bottom view at this time.

As shown in the front view of FIG. 4 and the schematic front view of FIG. 22, in the mowing work state in which the plane and the left and right slopes of the ridge L of the self-propelled mower 11 are simultaneously mowed, the rotary cutting blade 42 is Horizontal cutting blades 42a, which are central cutting blades arranged side by side at two central positions, are installed horizontally.
The right cutting blade 42b1 and the left cutting blade 42b2, which are inclined cutting blades 42b, are inclined along the left and right slopes. The movement of the inclined cutting blade 42b from the horizontal state to the inclined state will be described below.
As shown in FIG. 2 to FIG. 5, FIG. 13 to FIG. 18, and FIG. 20, the fixed arm 61 is hung from the cutting blade portion 41 side to the machine body 12 side, and the mounting hole 61a, the mounting hole 61b, and the mounting hole 61c. 3 mounting holes are provided. A pivot pin 62a is provided in a protruding manner at a joint between the first arm 62 and the second arm 63. On the first arm 62, a pivot pin 62b is provided so as to project from the joint with the second arm 63 toward the machine body 12 side. On the second arm 63, a turning pin 63b is provided so as to project from the joint with the first arm 62 toward the cutting blade 41 side.
In the horizontal state before the right cutting blade 42b1 and the left cutting blade 42b2 are tilted along the left and right slopes, the left cutting blade 42b2 takes the state shown in FIG. That is, one of the mounting holes 61 a located at both ends of the fixed arm 61 is selected from the three mounting holes of the mounting hole 61 a, the mounting hole 61 b, and the mounting hole 61 c provided in the fixed arm 61. Is attached to a turning pin 63b provided on the first arm 62, and the other attachment hole 61c is attached to a turning pin 62b provided on the first arm 62. The mounting hole 61b is in a free state. Therefore, the first arm 62 and the second arm 63 are horizontally positioned and fixed.

In order to tilt the right cutting blade 42b1 and the left cutting blade 42b2 along the left and right slopes, the rotating mechanism of the inclined cutting blade 42b having the fixed arm 61, the first arm 62, and the second arm 63 is operated. Let That is, as shown in FIGS. 4, 15, and 16, a first arm 62 attached to the machine body 12 and a second arm 63 rotatably attached from the first arm 62 with a rotation pin 62a. In between, let the stretchable state.
The mounting hole 61b located in the middle is selected from the three mounting holes of the mounting hole 61a, the mounting hole 61b, and the mounting hole 61c provided in the fixed arm 61, and the first arm 62 and the second arm 63 are The turning pin 62a is inserted and fixed. At this time, the mounting hole 61 a is mounted on the rotation pin 63 b provided on the second arm 63. The mounting hole 61c is in a free state. Therefore, the first arm 62 and the second arm 63 can freely rotate, and both can take an extended state.

By the way, as shown in FIG. 9, the cutting blade guide portion 43 is rotatable relative to the rotary shaft 44 of the rotary cutting blade 42 via a bearing 45, and has a bowl-shaped curved surface with respect to the ground contact surface. Have. Therefore, when the knob bolt 71 is removed, the tilted cutting blade 42b can be rotated back and forth (up and down) about the front and rear rotation shafts 73. By being rotatable, the cutting blade guide portion 43 of the inclined cutting blade 42b rotates up and down in accordance with the grounded surface.
Since the cutting blade guide part 43 of the inclined cutting blade 42b is in the free state, the inclined cutting blade 42b can be inclined as shown in FIGS. Become parallel.

As shown in the front view in FIG. 5 and the schematic front view in FIG. 23, in the mowing work state in which the plane and the left and right slopes of the ridge L of the self-propelled mower 11 are simultaneously mowed, the left slope is an upslope. Therefore, the left cutting blade 42b2, which is the left cutting unit, is in the highest position. At this time, the rotary cutting blade 42 is horizontally installed with the horizontal cutting blade 42a, which is a central cutting blade located at two central positions side by side.
The left cutting blade 42b2, which is the inclined cutting blade 42b, is inclined along the left slope.
As shown in FIG. 5 and FIG. 13, in order to bring the left cutting blade 42b2, which is the left cutting portion, to the highest position, the inclined cutting blade 42b having the fixed arm 61, the first arm 62, and the second arm 63 is provided. To activate the rotating mechanism. That is, the fixing of the fixed arm 61, the first arm 62, and the second arm 63 is temporarily released, and as shown in FIG. 5, the first arm 62 attached to the machine body 12 and the first arm 62 are rotated. With the second arm 63 rotatably attached by the moving pin 62a, the contracted state is obtained.

Next, the mounting hole 61b located in the middle is selected from the three mounting holes 61a, 61b, and 61c provided in the fixed arm 61, and the rotation pin of the second arm 63 is selected. Insert and fix 63b. The attachment hole 61c is attached to the rotation pin 62b provided on the first arm 62. The mounting hole 61a located at the tip is in a free state. The first arm 62 and the second arm 63 are fixed in a contracted state.
Therefore, the cutting blade guide portion 43 of the inclined cutting blade 42b is in the highest position and is not grounded.

As shown in FIG. 9 and FIG. 17, the self-propelled grass mower 11 takes a plane mowing position on the horizontal ridge L.
At this time, the rotary cutting blade 42 is horizontally installed on the same plane as the horizontal cutting blade 42a and the inclined cutting blade 42b, that is, the right cutting blade 42b1 and the left cutting blade 42b2.

As shown in FIG. 10 and FIG. 18, in a field scene in which the direction of travel is lowered to the front, the rotary cutting blade 42 of the self-propelled grass mower 11 is in the front-falling mowing posture.
At this time, the rotary cutting blade 42 is installed on the same plane as the horizontal cutting blade 42a and the inclined cutting blade 42b, that is, the right cutting blade 42b1 and the left cutting blade 42b2, in a front-down direction.

As shown in a partial cross-sectional side view in FIG. 11, in a field scene in which the traveling direction is raised forward, the rotary cutting blade 42 of the self-propelled mower 11 takes a forward raised mowing posture.
At this time, the rotary cutting blade 42 is installed on the same plane as the right cutting blade 42b1 and the left cutting blade 42b2, which are the horizontal cutting blade 42a and the slanted cutting blade 42b, and are raised upward.

FIG. 13 shows a state in which the left cutting blade 42b2 is fully raised during the mowing operation of the self-propelled grass mower 11. FIG. 14 shows the left cutting blade 42b2 in a horizontal state during the mowing work of the self-propelled grass mower 11. In FIG. 15, the left cutting blade 42b2 is tilted downward during the mowing operation of the self-propelled mower 11. FIG. 16 shows the left cutting blade 42b2 in the lowermost inclined state during the mowing work of the self-propelled mower 11.

As shown in FIG. 7, the rotary cutting blade 42 has a horizontal cutting blade 42a that is a central cutting blade, and a right cutting blade 42b1 and a left cutting blade 42b2 that are inclined cutting blades 42b in a state in which the width in the traveling direction is widened. Represents
FIG. 20 shows the tread adjustment state of the right crawler 22b and the left crawler 22a located on the left and right of the self-propelled mower 11.

According to the self-propelled mower 11 according to the embodiment of the present invention, the horizontal cutting blade 42a and the inclined cutting blade 42b are provided so as to be displaced in the front-rear direction, so that the inclination angle of the inclined cutting blade 42b is changed. There is little interference with the horizontal cutting blade 42a, and the tilt adjustment range of the inclined cutting blade 42b can be made relatively large, so that one self-propelled mower 11 can deal with more ridges.
Further, since the electric motor 32 is located above the crawler 22, the weight of the electric motor 32 is applied to the crawler 22 side at a relatively large ratio, and the self-propelled mower 11 can be stably driven.

Since the rotary cutting blades 42 can change their respective lateral positions, and the rotary cutting blades 42 located on the left and right sides have a structure in which the inclination angle in the horizontal direction can be changed, the rotary cutting blades 42 have various positional relationships. The cutting blade can be inclined. It is possible to mow a field such as a flat surface, both downward slopes, and one side upward slope in a single process, which enables efficient work. The working width can also be changed.
Further, since the driving of the cutting unit is independent, the driving of the cutting blade when not in use can be stopped. In particular, when the work is performed with one or both of the left and right sides raised, the raised cutting blade can be stopped, so that safe work can be performed.

Since the tread of the crawler 22 that is the traveling unit 21 can be changed, it is possible to work in a narrow place, and when traveling on an inclined surface, if the state is wide, the falling angle is improved and safe work can be performed.
Since the crawler which is the traveling unit 21 is driven by electric power rather than being driven by an engine, there is little noise and vibration, and since the operator can remotely control it, he/she can work away from the self-propelled mower 11 to some extent, and dust and It is not affected by the scattering of foreign matter, etc., and you can perform comfortable work. Further, since it is not necessary to operate the handle for the operation, the burden on the operator's body is small and it contributes to light labor.

According to the mowing blade portion 41 for the mowing machine according to the embodiment of the present invention, the cutting blade guide portion 43 that is the ground protector does not rotate together with the cutting blade 46, so that the lower surface is not damaged or worn. It is no longer necessary to replace the cutting blade guide part 43, which is a ground protector. It is extremely economical and convenient. Further, the extra fuel required for contact resistance is not consumed. And since the ground protector on the lower surface does not rotate, it is possible to perform the mowing work with the cutting blade guide part 43, which is the ground protector, on the ground, significantly reducing the labor of the worker and enabling light work. And

Further, since the cutting blade guide portion 43 does not rotate, resistance due to rotation from the ground contact surface is not received, and the steerability of the forward movement of the self-propelled grass mower 11 is not easily hindered, and required power can be reduced. Further, by providing the bowl-shaped curved surface with respect to the ground surface, the resistance of the ground portion can be minimized.
Since the cutting blade guide portion 43 is provided with the ground pressure adjusting means B at the time of work, the ground pressure can be adjusted to an optimum ground pressure according to the conditions of the mowing field and work can be performed with a minimum power.
When the cutting blade guide portion 43 is held by the link mechanism 51 that can follow the unevenness of the ground contact surface, the cutting blade can follow the field scene and perform cutting with high accuracy.

11 Self-propelled mower 12 Body 14 Control part 15 Operation part 21 Traveling part 41 Cutting blade for plane cutting (cutting blade for mower)
42 rotary cutting blade 43 cutting blade guide portion 51 link mechanism 64 spring B adjusting means

Claims (6)

An aircraft having a running part,
It has a cutting blade part for plane cutting provided in the front part of the machine body,
The rotary cutting blade of the cutting blade section,
There are three or more places on the left and right,
The rotary cutting blade located in the center of each of the rotary cutting blades is connected to a link mechanism having a first cutting blade holding arm and a second cutting blade holding arm for attaching the cutting blade portion in the left-right direction. It can be changed by moving the cutting blade left and right rotation axis horizontally around the rotation center,
The rotary cutting blades of the cutting blades located on both the left and right sides of the machine body have a rotating mechanism having a fixed arm, a first arm and a second arm, and the fixed arm extends the first arm and the second arm. Or you can change the tilt angle in the left and right direction by making it contracted,
In the extended state, the cutting blade unit vertically rotates about a vertical rotation center or a rotation axis that is a rotation center provided on the machine body, and follows a grounded surface.
A self-propelled mower characterized by that. The self-propelled grass mower according to claim 1, wherein the rotary cutting blades of the cutting blades provided on at least both the left and right sides can be independently driven. The self-propelled mower according to claim 1, wherein the tread of the traveling section can be changed. The self-propelled mower according to any one of claims 1 to 3, wherein the traveling section is electrically driven, and an operator can remotely perform a mowing operation. The self-propelled mower according to any one of claims 1 to 4, wherein the remote operation is an operation unit operated by an operator, which is connected to the machine body by a wire. In the remote operation, the operation unit operated by an operator operates a control unit that controls the operation of the machine body provided on the machine body by a command signal by wireless communication, according to any one of claims 1 to 5. Hay mower.

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