Lawn mower

Abstract

To provide a mower which stably travels on a ridge and allows a mowing work of a top face and a sloped face of the ridge.SOLUTION: A mower according to one embodiment of the present invention mows while traveling on a ridge, includes: a mowing part having a blade and provided on a front side of a travel part; and a mowing part having a blade and provided on a rear side of the travel part. In a back view, the blade pf the mowing part provided on the front side is aligned in a right-left direction and partly overlapped with the blade of the mowing part provided on a rear side.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a lawn mower. In particular, it relates to a self-propelled lawn mower.

Background Art

[0002] Conventionally, in order to remove weeds and the like growing on the top surface or side surface of a ridge, a lawn mower is used to regularly perform ridge mowing operations. Patent Document 1 discloses a self-propelled lawn mower that performs mowing operations on the top surface (upper surface) and side surface while traveling on a ridge by remote control via wireless communication. The lawn mower described in Patent Document 1 includes a cutting blade portion having a horizontal cutting blade and an inclined cutting blade at the front of the machine body, and while traveling, it can remove weeds and the like growing on the top surface of the ridge using the horizontal cutting blade and remove weeds and the like growing on the side surface of the ridge using the inclined cutting blade.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Since the lawn mower described in Patent Document 1 has a cutting blade portion at the front of the machine body, there is a problem that the weight of the machine body is concentrated on the front part of the machine body, making it easy to lose balance. Also, in order to reduce the interference between the horizontal cutting blade and the inclined cutting blade and secure the inclination adjustment range of the inclined cutting blade, a mechanism is required, which makes the configuration of the cutting blade portion more complicated than the conventional configuration, and there is a possibility that the weight of the cutting blade portion is more likely to be applied to the front part of the machine body than before. As a result, the lawn mower of Patent Document 1 has a problem in mowing There is a risk of losing balance while driving.

[0005] The objective of one embodiment of the present invention is to provide a machine that can stably travel along a ridge and mow grass on the top and slopes of the ridge. The objective is to provide a lawnmower that can be used for commercial purposes. [Means for solving the problem]

[0006] A lawnmower according to one embodiment of the present invention is a lawnmower that cuts grass while traveling on a ridge. , a cutting section having a blade and located in front of the running section, and a cutting section having a blade and located behind the running section It is equipped with a cutting section.

[0007] In a rear view, the cutting blade portion is located at the front, and the cutting portion is located at the rear. The blade portion of the blade is arranged so as to be aligned in the left-right direction and partially overlapping. stomach.

[0008] In a rear view, the cutting blade portion is located at the front, and the cutting portion is located at the rear. The cutting blades are arranged in a left-right direction, and the cutting blades are located in the front. When combined with the cutting blade located at the rear, it has at least three blades. Of the at least three blade portions, the two blade portions located at both ends in the left-right direction, The angle of the cutting surface, which is the surface containing the trajectory of the blade as it cuts grass, relative to the horizontal plane can be adjusted independently. It should be possible.

[0009] Of the three blade portions mentioned above, the remaining two blade portions are those located at both ends in the left-right direction. The blade portion is provided between the two blade portions located at both ends in the left-right direction, and the left-right direction It has a control unit that can independently drive the two blade sections located at both ends and the remaining blade section. That's fine.

[0010] The cutting blade located at the rear consists of two blades located at both ends in the left-right direction. Yes, the cutting blade portion provided in front of the cutting section is, of the at least three blade portions, The remaining blade portion may be the two blade portions located at both ends in the left-right direction.

[0011] The cutting blades located at the front and the cutting blades located at the rear are driven It is equipped with a battery and an engine that serve as a power source for the purpose of, and the battery is located at the front. Power is transmitted to the blades of either the cutting section or the cutting section located at the rear. Upon reaching the other blade, the engine may transmit power to the other blade.

[0012] The cutting blades located at the front and the cutting blades located at the rear are driven It is equipped with a battery and an engine that serve as a power source for the purpose, and in a rear view, it is provided at the front The cutting section and the cutting section located at the rear are arranged to be aligned in the left-right direction. When the cutting section provided at the front and the cutting section provided at the rear are combined, There are at least three blade sections, and of the at least three blade sections, the left and right ends are located In the two blade sections, the angle of the cutting surface, which is the surface containing the trajectory of cutting grass, with respect to the horizontal plane. Each is independently adjustable, and the two blades located at both ends in the left-right direction are, The cutting section located in front of the vehicle, or the cutting section located in the rear of the vehicle, either one of the blades This is a part, and of the at least three blade parts, the two blade parts located at both ends in the left-right direction. The remaining blade portion, excluding the front, is provided between the two blade portions located at both ends in the left-right direction, and the front It is the other blade part of the mowing part provided on the side or the mowing part provided on the rear side, and the memory battery supplies power to the blade parts located at both ends in the left - right direction, and the engine may supply power to the remaining blade parts.

[0013] The two blade parts located at both ends in the left - right direction are the blade parts of the mowing part provided on the rear side, and the remaining blade parts are the mowing part provided on the front side. The battery may be provided behind the position where the engine is provided with respect to the traveling direction of the traveling part.

[0014] The machine body connected to the traveling part, the connecting member that supports the mowing part, the connecting part that connects the connecting member to the machine body and supports the connecting member so as to be rotatable in the vertical direction, and the lower limit restricting part that restricts the lower limit rotation position of the connecting member with respect to the machine body are provided.

Advantages of the Invention

[0015] According to an embodiment of the present invention, it is possible to provide a lawn mower that can stably travel on a ridge and perform lawn mowing operations on the top surface and the side surface of the ridge.

Brief Description of the Drawings

[0016] [Figure 1] It is a plan view showing the configuration of a lawn mower according to an embodiment. [Figure 2] It is a left side view showing the configuration of a lawn mower according to an embodiment. [Figure 3] It is a block diagram for explaining the power flow of the lawn mower 100 according to an embodiment. [Figure 4] It is a rear view showing the configuration of the top - field mowing part and the side - surface mowing part according to an embodiment. [Figure 5] It is a rear view showing the configuration of the top - field mowing part and the side - surface mowing part according to an embodiment. ​​​​ [Figure 6] This is a plan view showing the configuration of the blade according to one embodiment. [Modes for carrying out the invention]

[0017] The present invention will be described below with reference to the drawings. However, the present invention is It can be implemented in many different ways, and the interpretation is limited to the examples shown below. Not done. Furthermore, in the drawings referenced in this embodiment, the same part or having a similar function may be... The part that is repeated will have the same symbol or the same symbol followed by an alphabet letter to explain its repetition. (Details omitted.) Additionally, identical or similar members are provided at left and right positions relative to the direction of travel. In this case, L (left-side member) or R (right-side member) shall be added after the symbol of the member in question. Left and right parts When no particular distinction is made between materials, L and R may be omitted in the explanation.

[0018] In the specification and claims of this application, "above" means that the grass cutter cuts grass on the ridge. In the state of working while progressing, it indicates the direction perpendicular to the ridge, and "down" means, It indicates the opposite direction to "up". Also, for the sake of explanation, "front" refers to the top cutting relative to the running part. The direction in which the part is located is indicated, and "back" indicates the opposite direction from "front". Also, "left" or " "Right" indicates the left or right of the "rear" of the lawnmower.

[0019] In the specification and claims of this application, the left-right length of each component of the lawnmower is It is called "width". Also, the center line of the lawnmower in a plan view (parallel to the direction of travel, and the cutting edge When using the line passing through the center of the machine as a reference, the side that is relatively closer to the center line is called the "inside". The side furthest from the center line is called the "outside."

[0020] <First Embodiment> [Components of Lawn Mower 100] The grass cutter 100 of this embodiment is a self-propelled grass cutter that performs grass cutting work on ridges while moving. Specifically, it is remotely controlled by a remote controller and moves along the ridges to mow the grass. This is a lawnmower used for mowing.

[0021] Figure 1 is a plan view showing the configuration of the lawnmower 100 of this embodiment. Figure 2 is an embodiment of this embodiment. Figure 3 is a left side view showing the configuration of the lawnmower 100. This is a block diagram illustrating the flow of power. Figure 4 shows the lawnmower 100 of this embodiment. This is a rear view showing the configuration. Figure 5 is a rear view showing the configuration of the lawnmower 100 of this embodiment. In addition, in the lawnmower 100 according to this embodiment shown in Figure 1, the state of the slope mowing section 80 is , adjusted to a position parallel or approximately parallel to the horizontal plane 203 (see Figure 4), and the length in the left-right direction The (width) is adjusted to the position where it is maximized. The lawnmower according to this embodiment is shown in Figure 4. In 100, the state of the slope mowing section 80 is determined according to the slope of the embankment 202 of the ridge 200, and the mowing surface 2 The angle α between 04L and 204R and the horizontal plane 203 has been adjusted.

[0022] As shown in Figure 1 or Figure 2, the lawnmower 100 of this embodiment comprises a machine body 10, a running section 20, A mowing unit 120 having a top mowing unit 30 and a slope mowing unit 80, a control unit 40, and a linkage machine. The system includes a structure 50, an engine 60, an alternator 70, and a battery 41, and is controlled by a control unit 40. The drive of each part is controlled. Then, the brush cutter 100 moves under its own power using the travel unit 20, By controlling the drive of the cutting unit 30 and the slope cutting unit 80, the top surface of the ridge 200 can be mowed in a single pass. It is now possible to perform grass cutting work on 201 and slope 202.

[0023] The main body 10 is the frame that forms the skeleton of the lawnmower 100. It includes a support plate 15 fixed to the body 14 and extending forward. The support plate 15 has a top surface Mounting members 11L and 11R for attaching the cutting unit 30 are provided. At the rear of the main body 14 is a slope mowing attachment member 12 for attaching the slope mowing section 80. A feature is provided. The aircraft body 10 is made of metal material (e.g., steel, aluminum), fiber reinforcement. It can be constructed using plastic (FRP) materials, etc., but this is not the only example. isn't it.

[0024] The running section 20 has a pair of left and right crawlers 20L and 20R, and the running section of the lawnmower 100 It functions as a step. In a rear view, the crawler 20L is facing the direction of travel of the brush cutter 100. The Crawler 20R is a left-side drive system. Since the structure of the Ra20R is the same as that of the Crawler20L, we will focus on the Crawler20L here. I will explain.

[0025] As shown in Figure 2, the crawler 20L consists of a crawler belt 21L, a drive wheel 22L, and a driven wheel. Includes 23L, crawler frame 24L, and drive unit 54L. Crawler belt 21L is It is strung between the drive wheel 22L and the driven wheel 23L, and rotates in accordance with the rotation of the drive wheel 22L. In this embodiment, the crawler belt 21L is made of an elastic material (specifically rubber), It has multiple lug sections (protrusions). The drive wheel 22L receives power from the drive unit 54L (Figure 3). It rotates due to the power applied. In this embodiment, a motor is used as the drive unit 54L. The drive unit 54L is powered by electricity supplied from the alternator 70 and the battery 41. The power generated by the rotation of the drive wheel 22L is transmitted to the driven wheel 23L via the crawler belt 21L. Reaching the target. The crawler frame 24L allows the drive wheels 22L and driven wheels 23L to rotate independently. I support it.

[0026] The cutting unit 120 includes a top cutting unit 30 located in front of the traveling unit 20, and a traveling unit 20. It has a slope mowing section 80 located behind section 20. The slope mowing section 80 is located on both the left and right sides. It has a pair of left-side slope mowing sections 80L and right-side slope mowing sections 80R. Further details will be described later. The top cutting section 30 is located in the direction (forward) of the machine body 10's movement and is used to cut weeds and other plants growing on the ridges. It functions as a means of cutting grass (grass cutting work). Also, the top cutting section 30 It is provided between the left slope mowing section 80L and the right slope mowing section 80R in the left-right direction. It can be done.

[0027] The control unit 40 is located above the machine body 10 and controls the traveling unit 20, the cutting unit 120, and the battery It has the function of controlling the RI 41. The control unit 40 includes, for example, a computing unit, memory, and communication circuit. It has an electronic circuit board equipped with circuits, etc. The control unit 40 (memory) contains the lawnmower 100 Control programs for various functions are stored in the memory, and the arithmetic unit controls from the memory. The program is read, and the control unit 40 controls the travel unit 20 and the top field harvesting based on the control program. This is the central part that controls the mowing section 30 and the slope mowing section 80.

[0028] The linkage mechanisms 50L and 50R connect the machine body 10 and the running section 20, and the machine body 10 and the running section It has the function of relatively changing the positional relationship with 20. The link mechanism 50L is for grass cutting. This is the link mechanism on the left side in the direction of travel of machine 100, and it is connected to crawler 20L. Link mechanism 50R is the right-side link mechanism and is connected to crawler 20R.

[0029] The linkage mechanism 50L consists of link arm 51L, link arm 52L, and electric cylinder 53 Includes L. The link mechanism 50R includes link arm 51R, link arm 52R and electric cylinder This includes the 53R. Note that the structure of the 50R link mechanism is the same as that of the 50L link mechanism. Here, we will focus on the link mechanism 50L in our explanation.

[0030] In the link mechanism 50L, one end of the link arm 51L is attached to the crawler frame 24L. It is rotatably connected, and the other end is rotatably connected to the electric cylinder 53L. The arm 51L has a bent portion, at which it is rotatably connected to the machine body 10. The link arm 52L is connected at one end to the crawler frame 24L and at the other end to the machine body 10. This connects link arm 51L, link arm 52L, and crawler frame 2. The parallel link is formed by 4L and the aircraft body 10. The electric cylinder adjusts according to the unevenness of the ground. By extending and retracting 53L and operating the parallel link, the space between the machine body 10 and the running section 20 The system is configured to change the vertical positional relationship, allowing the aircraft 10 to travel while maintaining a horizontal position.

[0031] As shown in Figure 2 or Figure 3, the engine 60 is mounted above the aircraft body 10 and is used for top-grass cutting. Power sources for drive units 33L and 33R that drive the blade sections 32L and 32R included in section 30, and It functions as a power source for the alternator 70. The power generated by the engine 60 is, The drive units 33L and 33R, and the other are transmitted via a power transmission means (not shown) consisting of a belt or the like. The power is then transmitted to a separately provided alternator 70. A first power transmission means for transmitting power to 70, and a means for transmitting power to the top cutting section 30. It includes a second power transmission means for that purpose.

[0032] The alternator 70 is located above the aircraft 10. The alternator 70 and engine A belt (not shown) of the first power transmission means is stretched across n60. As the engine's power is transmitted, the alternator 70 generates electricity. The turner 70 supplies the generated power to the battery 41 and also to the slope mowing unit 80. The drive units 83L and 83R (Figures 1 and 3) that drive the included blade sections 82L and 82R, and It also functions as a power source for the drive units 54L and 54R (Figure 3) that drive the running unit 20. The power generated by the alternator 70 is used to power the wire harness, harness cables, etc. Power supply means (not shown) that supply power and / or control signals (electrical signals) referred to as [specific term]. via drive units 83L and 83R, drive units 54L and 54R, drive units 33L and 33R , and is also supplied to the battery 41.

[0033] The alternator 70 is equipped with a power generation control circuit (not shown) for controlling power generation. It is equipped with a sensor that detects the battery voltage. The power generation control circuit monitors this detection result and controls the power generation status of the alternator 7 The 0 itself is designed to control it. In other words, the power generation control circuit monitors the battery voltage. It is in a ring state, and when the battery voltage falls below a predetermined value, it generates power and enters a power supply state. The alternator 70 is controlled so that power is cut off if the battery voltage exceeds a predetermined value.

[0034] The battery 41, like the alternator 70, is located above the fuselage 10 and behind the engine 60. It is provided on the side. The battery 41 stores the electricity generated by the alternator 70. The Teri 41 uses the stored electricity to drive the blades 82L and 82R included in the slope cutting section 80. Drive units 83L and 83R (Figures 1 and 2), and a drive unit that drives the running unit 20 forward and backward. It functions as a power source that supplies power to 54L and 54R (Figure 3). In addition, battery 41 stores The power is used by a link mechanism 50 that changes the vertical positional relationship between the machine body 10 and the running section 20. As a power source to supply power to the electric cylinders 53L and 53R for operating L and 50R It works. Furthermore, the power stored in battery 41 is supplied in the same way as the alternator 70. Through means, drive units 83L and 83R, drive units 54L and 54R, and electric cylinder 5 It is supplied to 3L and 53R.

[0035] The lawnmower 100 of this embodiment may include a cover member. The cover member is a bag It has the role of covering and protecting the Terri 41, control unit 40, alternator 70, and engine 60. The cover member also includes the battery 41, the control unit 40, the alternator 70, and the engine It may also be configured to cover a portion of n60.

[0036] As shown in Figure 1, the grass cutter 100 according to this embodiment has a top-grass cutting mechanism in front of the machine body 10. The machine is equipped with section 30, and the right slope mowing section 80R and the left slope mowing section 80L are located at the rear of the machine body 10. It is positioned symmetrically with respect to the center line 110. Also, in a rear view, the top trimming section 30 It is positioned between the right slope mowing section 80R and the left slope mowing section 80L, The mowing section 30, the right slope mowing section 80R, and the left slope mowing section 80L form a triangle. It is positioned in such a way. Therefore, the weight of the cutting unit 120 is not like that of a conventional lawnmower. It does not concentrate on one side. Also, above the aircraft body 10 are the control unit 40, the alternator 70, The engine 60 is positioned on the center line 110. With this configuration, the embodiment In the lawnmower 100, the weight of the lawnmower 100 is concentrated at a specific point on the lawnmower 100. This suppresses the tendency to lose balance while driving. Therefore, according to this embodiment, The 100 grass cutter can travel stably along the top of the ridges and is capable of cutting grass on the top of the ridges and slopes. ru.

[0037] Furthermore, in this embodiment, the grass cutter 100 has the top cutting section 30 positioned in front of the travel section 20. Because it is installed there, the grass can be cut before the grass growing on the top surface 201 is flattened by the traveling unit 20. This results in a better finish on the ridges after mowing. Furthermore, the weight of the mowing unit 120 is distributed. From this perspective, the arrangement of the top mowing section 30 and the slope mowing section 80 is as follows in this embodiment. The arrangement is not limited to this, but the slope mowing section 80 is provided in front of the running section 20, It is also possible to configure the plant to have a top cutting section 30 located behind the running section 20.

[0038] [Configuration of the top cutting section 30] In the following, using Figures 1, 2, 4, and 5, we will explain the configuration of the top cutting section 30 and the slope The configuration of the harvesting unit 80 will be explained in detail. First, the configuration of the top-level harvesting unit 30 will be explained. The top cutting section 30 is supported so as to be suspended from the support plate 15 via the mounting member 11. It is provided. The top cutting section 30 is located in front of the traveling section 20 and cuts the top surface of the ridge. It is designed to cut weeds and other grass that have grown in the area.

[0039] As shown in Figure 1 or Figure 2, the top cutting section 30 is arranged side by side with the casing 31. Casing includes two cutting edges 32L and 32R, and drive sections 33L and 33R. 31 covers the top and sides of the blade sections 32L and 32R, preventing the scattering of soil, pebbles, grass, etc. into the surrounding area. This prevents the following. Note that the structure of the blade section 32R and the drive section 33R is the same as the structure of the blade section 32L and the drive section 33L Since the structure is the same as before, we will focus on the blade portion 32L and the drive portion 33L in this explanation. The blade section 32L consists of multiple grass cutting blades 32La and a cutting blade mount for attaching the multiple grass cutting blades 32La. It has a section 32Lb. The cutting blade mounting section 32Lb is connected to the rotating shaft 32Lc of the drive unit 33L. It is connected and rotates with power from the engine 60. The rotation of the cutting blade mounting section 32Lb, Multiple grass-cutting blades 32La also rotate, and the blade section 32L is configured to cut grass. 33L has a second power transmission means (not shown) including a belt (not shown), and an engine Power from 60 is transmitted to multiple grass cutting blades 32La via the cutting blade mounting section 32Lb. The second power transmission means incorporates an (electric) clutch (not shown) and a control unit. 40 controls the clutch to transmit power from the engine 60 to the top cutting section 30. It is configured to allow control over whether or not this occurs. In this embodiment, the second power transmission means is Multiple gears (Figure) divide the rotational force of the belt and transmit it to both the drive unit 33L and 33R. (Details omitted) Multiple gears are used to drive the engine 60, which is transmitted via a belt. However, it is designed to transmit evenly to both the drive units 33L and 33R. Therefore, the multiple grass cutting blades 32La of the blade section 32L and the multiple grass cutting blades 32R of the blade section 32R 'a' rotates at the same time and speed.

[0040] In the grass trimmer 100 according to this embodiment shown in Figure 1, the blades 32L and 32R are located on the top surface 201 (Figure 4) The width (cutting width) that can be used to cut the grass is the cutting width W1, and the crawler belt 2 The width between the left end of 1L and the right end of Crawler Belt 21R (crawler width) is Crawler width W 2. In this embodiment, the cutting width W1 is configured to be larger than the crawler width W2, and the crawler 20 Because the blades 32L and 32R cut the grass before L and 20R flatten it, This prevents grass from being left uncut due to grass lodging on the crawler tracks 20L and 20R.

[0041] As shown in Figure 1, the blades 32L and 32R are positioned left and right with respect to the center line 110 of the machine body 10. They are arranged symmetrically or nearly symmetrically. In addition, there are multiple grass-cutting blades on the blade section 32L and multiple blades on 32R. The rotational trajectories of the grass cutting blades are arranged to partially overlap. Furthermore, the blade sections 32L and 32 The positions of the multiple mowing blades that make up R are such that they do not come into contact with each other when stationary. It is misaligned. As a result, the grass cutter 100 according to this embodiment is positioned on the top surface 201 of the ridge 200. It is possible to cut the grass without leaving any untouched patches. In this embodiment, the rotational trajectory is When the grass-cutting blades that make up the blade section rotate around the axis of rotation, the tip of the outermost grass-cutting blade is It is the trajectory it traces. For example, the rotational trajectory is the rotation of the grass-cutting blade 32La that makes up the blade portion 32L. This is the trajectory traced by the tip of the outermost grass-cutting blade 32La when it rotates around the axis 32Lc. .

[0042] In the grass trimmer 100 according to this embodiment, the blades 32L and 32R do not interfere with each other. They are arranged with a phase shift. The second power transmission means distributes the power from the engine 60. The branch then moves the blade sections 32L and 32R at the same timing and speed via the drive sections 33L and 33R. It is configured to be driven in degrees. When the rotating shaft of engine 60 rotates, the second power transmission Through the means, the rotating shafts 32Lc and 32Rc of the drive units 33L and 33R rotate, driving The blade sections 32L and 32R connected to sections 33L and 33R also rotate. As a result, the blade section 32 The L and 32R can cut grass growing on the top surface 201. The output of the 60 engine is comparative. Because of its large size, engine 60 can reliably transmit power to drive units 33L and 33R. Yes, it is possible. As a result, the drive units 33L and 33R can stably supply power to the blade units 32L and 32R. The blades 32L and 32R transmit the information and cut the grass growing on the top surface 201 of the ridge 200 without leaving any behind. Therefore, the grass trimmer 100 according to this embodiment enables stable grass trimming work.

[0043] In the grass trimmer 100 according to this embodiment, the blade portion 32 of the top cutting section 30 is rotated. An example was shown using engine 60 as the power source. However, the examples described here are not the only ones. Furthermore, a motor can be used as the power source for rotating the blade sections 32L and 32R. In this case, the control unit 40 is used to independently control the drive units 33L and 33R, and the blade unit The 32L and 32R may be driven independently.

[0044] In the grass trimmer 100 according to this embodiment, the blades 32L and 32R of the top cutting section 30 rotate An example consisting of multiple rotating grass-cutting blades 32La and 32Ra was shown. However, here it is explained In addition to the above example, the blade sections 32L and 32R consist of two blade-shaped members equipped with multiple V-shaped blades. It is constructed by overlapping multiple V-shaped blades of a blade-shaped member, with one of the two blade-shaped members on the left. After moving, one moves to the right, and the other moves to the right and then to the left (that is, left and right) The two blade-shaped members move in opposite directions repeatedly, or move in different directions. The grass trimmer 100 may have the function of cutting grass by rotating in the direction of rotation. 32L and 32R are blades similar to those found in, for example, hair clippers.

[0045] [Configuration of the slope mowing section 80] Next, the configuration of the slope mowing unit 80 will be described in detail. As shown in Figure 1 or Figure 2, the machine body 1 Behind 0, a slope mowing attachment member 12 is fixed at a position passing through the center line 110. The slope mowing section 80 is supported on the machine body 14 via the slope mowing section mounting member 12. The slope mowing section 80 consists of a pair of left and right slope mowing sections 80L and right slope mowing section 80 It includes R. Details will be described later, but the left slope mowing section 80L and the right slope mowing section 80 R is configured to allow multiple mowing blades to be angled from a horizontal position to an angle that matches the slope of the embankment. It is designed to cut weeds and other grass growing on the top of the ridge or slope. It is.

[0046] As shown in Figures 1, 2, or 4, the slope mowing section 80 is connected to the main body 14. Member 88, connecting member 90 rotatably supported by connecting member 88, and from the connecting member 90 to the left and right A pair of left and right support members 86L and 86R extend and are supported by the connecting member 90, each having a blade portion A pair of left and right slope mowing sections 80L and 80R, having left slope mowing The surface (cutting surface) 204L includes the trajectory of the blades of the mowing section 80L and the right-side slope mowing section 80R as they cut the grass. Alternatively, a pair of left and right angle adjustment mechanisms 130L adjust the angle between 204R and the horizontal plane 203. It has a radius of 130R. In this embodiment, the mowing surface 204L or 204R is the slope mowing section. 80 (Blade portion 82L of the left slope mowing section 80L and blade portion 82R of the right slope mowing section 80R) This is the surface that includes the trajectory of cutting the grass. For example, in the case of a rotating blade as in this embodiment, the cutting surface 204L or 204R is the surface that includes the rotational trajectory of the blade, as described above for clippers. In the case of a blade section including two blade-shaped members that reciprocate in different left-right directions, the cutting surface 204L or 204R is a surface that includes the trajectory of the blade's movement in the left-right direction.

[0047] As shown in Figure 2, the connecting member 88 is connected to the left slope mowing section 80L via the connecting member 90. It supports the right slope mowing section 80R. The front part of the connecting member 88 is the slope of the machine body 14. The cutting unit mounting member 12 is configured to be removable from the cutting unit mounting member 12. The rear of the connecting member 88 has a protruding portion 8 An 8a is provided. The protruding portion 88a has an insertion hole formed through which a pin-shaped member 88b is inserted. The pin-shaped member 88b is inserted into the insertion hole and the insertion hole formed in the arm portion 90b. The protruding portion 88a is inserted through the pin-shaped member 88b, with the center point of the pin-shaped member 88b as the pivot point (the central axis as the pivot axis). The connecting member 90 (arm portion 90b) is rotatably supported. Further details will be described later, In this embodiment, the connecting member 90 is rotatably supported with respect to the connecting member 88 (protruding portion 88a). This configuration allows the slope mowing section 80 to move upwards in relation to obstacles. Furthermore, the rear end 88c of the protruding portion 88a is a member that limits the lower limit position of the connecting member 90. It functions in this way. That is, the rear end 88c of the protruding portion 88a is engaged with the connecting member 90. It is configured to contact member 90a and restrict the downward rotational movement of the connecting member 90. In this specification, the rear end 88c of the projection 88a is referred to as the lower limit portion.

[0048] As shown in Figure 1, Figure 2, or Figure 4, the connecting member 90 is provided with a pin-shaped member 88b The frame section 90b and the rear of the arm section 90b are provided, and support members 86L and 86R are attached to them. It has a mounting member 90c for attaching to it. The arm portion 90b has a pin-shaped engaging part. Member 90a is provided as a protrusion.

[0049] As shown in Figure 4, the angle adjustment mechanism 130 (130L and 130R) is supported by the support member 86L The left slope mowing section 80L is connected to the support member 86R and the right slope mowing section 80R. The structure of the angle adjustment mechanism 130R is the same as the structure of the angle adjustment mechanism 130L, therefore Here, we will focus on the angle adjustment mechanism 130L. The angle adjustment mechanism 130L is used for mowing the left slope. The blade section 82L included in the cutting section 80L is adjusted from a horizontal position to an angle that matches the slope of the embankment. It has the function of centering the mowing section mounting pin 89La on the left slope mowing section 80L The angle of the blade portion 82L is adjusted by rotating it. The angle adjustment mechanism 130L is, for example, Lock plate 84L, cam portion 87L, support member 89L connected to cam portion 87L, and It includes a spring 97L connected between the lock plate 84L and the left slope mowing section 80L.

[0050] As shown in Figures 1 and 4, the left slope mowing section 80L and the right slope mowing section 80R are These are the casings 81L and 81R, the blade sections 82L and 82R, and the drive section 83L and Includes 83R. In the lawnmower 100 according to this embodiment, the control unit 40 is used to drive the drive unit 83 L and 83R can be controlled independently, and the blade sections 82L and 82R can be driven independently. Section 82L and blade section 82R are multiple, similar to the blade sections 32L and 32R of the top cutting section 30. Grass cutting blades 82La and 82Ra, cutting blade mounting parts 82Lb and 82Rb, and rotating shaft 82Lc It is a part composed of and 82Rc, and multiple grass cutting blades 82La and 82Ra rotate This cuts the grass growing on the ridge. In addition, the blades 82L and 82R are located on the top cutting section 30 Similar to the blade sections 32L and 32R, two blade-shaped members are provided, each having multiple V-shaped blades. It is constructed by overlapping multiple V-shaped blades in an offset manner, and the two blade-like members move back and forth in opposite directions. Alternatively, the two blade-shaped members rotate in different directions relative to each other, thereby enabling the grass trimmer 100 to... It may also have a function for cutting grass. Note that the structure of the right slope mowing section 80R is the same as the left slope mowing section. Since it is the same as section 80L, we will focus on the left slope mowing section 80L in this explanation.

[0051] The casing 81L is connected to the lock plate 84L via the spring 97L, and the support member 8 It is connected to the cam section 87L via 9L. As a result, the left slope mowing section 80L is the support section It is supported by material 86L. Also, as shown in Figure 2, in the left slope mowing section 80L, The casing 81L covers the blade section 82L and, similar to the casing 31 of the top cutting section 30, the soil This prevents pebbles, grass, and other debris from scattering into the surrounding area. Note that the casing 81L includes a lock plate 8 One end of spring 97L, which spans between 4L and 4L, is connected. Also, casing 81L A pair of support members 89L are provided, which are connected to the cam portion 87L. The 81L has a handle 140 which serves as a gripping part when adjusting the angle of the left slope cutting section 80L. L is provided. Also, the drive unit 83L is the part for rotating the blade unit 82L. It has a motor that is driven by power supplied from the alternator 70 and the battery 41. It is.

[0052] In the lawnmower 100 according to this embodiment, the control unit 40 is used to control the drive units 83L and 83R The drive unit 83L and The 83R receives power from the alternator 70 or battery 41 to the blades 82L and 8 It is supplied to 2R. In this embodiment, when the blades 82L and 82R are driven, normally In this case (when the battery voltage is above a specified value), the alternator 70 generates (supplies) power. The system is in a stopped state, and power is supplied to the blades 82L and 82R only from the battery 41. On the other hand, if the power supply from battery 41 is insufficient (battery voltage is predetermined) If the value falls below a certain level, the alternator 70 generates power and supplies power from the battery 41. In addition to the power supply, the power generated by the alternator 70 is also supplied to the blade sections 82L and 82R. It can be done.

[0053] Note that the battery 41 and the drive units 83L and 83R, and the alternator 70 and the drive unit 83L And 83R are connected, for example, by a wire harness. As mentioned above, left side method The surface mowing section 80L and the right slope mowing section 80R are equipped with angle adjustment mechanisms 130L and 130R. It is provided and configured so that the positions of the drive units 83L and 83R can be changed, The mower 100 uses a battery as the power source for the blade sections 82L and 82R and the drive sections 83L and 83R. By using the Teri 41 or Alternator 70, the drive unit 83L is connected via a wire harness. And connect 83R to battery 41 or alternator 70 using a wire harness The power to rotate the blades 82L and 82R is transmitted to the blades 82L and 82R. It is configured to do so. In other words, the lawnmower 100 is powered by an engine. In this case, there is no need for a power transmission means, and the position of the drive units 83L and 83R The left slope mowing section 80L and the right slope mowing section 80R, whose positions change, (with a simple configuration) It is now possible to supply electricity.

[0054] [Driving the top mowing unit 30 and the slope mowing unit 80] The driving methods for the top mowing unit 30 and the slope mowing unit 80 will be explained using Figures 1 to 4.

[0055] The control unit 40 operates according to the control program stored in the control unit 40, remote control It controls each part by executing control based on signals obtained from a radio (not shown). Unit 40 is based on signals obtained from various sensors (not shown) installed on the lawnmower 100. Control, position control using GNSS (Global Navigation Satellite System), and signals obtained from servers, etc. It also has the function to perform various controls, such as controls based on regulations.

[0056] First, we will describe an example in which both the top mowing unit 30 and the slope mowing unit 80 are driven. Example For example, the control unit 40 controls the top cutting unit 30 and the slope from a remote controller (not shown). Both the cutting unit 80 and the other are driven to cut the grass growing on the top surface 201 (Figure 4) of the ridge 200 (Figure 4), and The first work signal is received to execute the operation of mowing the grass growing on the slope 202 (Figure 4) of the ridge 200. do.

[0057] The control unit 40 operates the engine 60 based on the first work signal. Before receiving the second power, the lawnmower 100 transmits power to the top cutting section 30. Although the clutch of the transmission means is disengaged, the control unit 40 receives the first work signal. After the engine 60 has started, the clutch control is performed by the user's remote controller operation, etc. Upon receiving a signal, the clutch is controlled to switch from a disconnected state to a connected state. As a result, the engine's power is transmitted to the drive units 33L and 33R of the top-mounted cutting unit 30. The blades 32L and 32R of the top cutting section 30 rotate. The drive section 83L of the slope cutting section 80. And 83R receives the first working signal and after the engine 60 is running, the user's remote The drive starts when a drive control signal for both harvesting units is received via controller operation or other means. It is controlled by the control unit 40 in this manner. Similarly, after the engine 60 has been operated, the user When the control unit 40 receives a driving control signal via remote controller operation or the like, the driving unit 2 The drive units 54L and 54R of unit 0, and the electric cylinders 53L and 53R of unit 20 are driven It initiates these operations and controls them according to a predetermined program.

[0058] Furthermore, when the engine starts after receiving the first work signal, the alternator 70's power generation control is activated. The circuit begins monitoring the battery voltage. The power generation control circuit then monitors the battery voltage. If the voltage is above a predetermined value, power generation will not occur; if the battery voltage falls below a predetermined value, power generation will occur. This controls the power generation state of the alternator 70.

[0059] The electricity generated by the alternator 70 is used by the drive units 83L and 83R of the slope mowing unit 80. It is supplied to the drive units 54L and 54R of the running unit 20, and any excess that is not supplied to them Power is supplied to the battery 41 and stored. In other words, the alternator 70 is used for slope mowing. The batteries are used to control the drive units 83L and 83R of section 80 and the drive units 54L and 54R of the running section 20. It functions as a supplementary power source when the voltage drops.

[0060] As a result, the lawnmower 100 moves while maintaining the horizontal position of the machine body 10, and the blade section 32L and Using 32R, the grass growing on the top surface 201 of the ridge 200 is cut, and the blades 82L and 82R Using this, the grass growing on the slope 202 of the ridge 200 can be cut. In this embodiment, Even if the voltage drops, the alternator 70 drives the slope mowing unit 80. By supplying power to 3L and 83R, and the drive units 54L and 54R of the running unit 20, Because it can be driven stably, the grass trimmer 100 can be driven while cutting grass without leaving any untouched spots. It is possible to cut it.

[0061] Next, the top mowing section 30 and the left slope mowing section 80L or the right slope mowing section 80R An example of driving with either one will be described. For example, the control unit 40 is a remote controller (not shown). (Not performed) From the top mowing section 30 and the left slope mowing section 80L or the right slope mowing section 80R Drive either of the two, and remove the grass growing on the top surface 201 (Figure 4) of the ridge 200, and the right side of the ridge 200 The second operation involves mowing the grass growing on either the side or left side of the slope 202 (Figure 4). Receives a signal.

[0062] The control unit 40 operates the engine 60 based on the second work signal. Top cutting unit 30 The drive of the vehicle, the drive of the travel unit 20, and the power generation control of the alternator 70 are as described in the first operation above. Since this is the same as when a signal is received, a detailed explanation will be omitted. Here, as an example, An example of driving the left-side slope mowing unit 80L will be explained.

[0063] The control unit 40 receives the second work signal and drives the engine 60, and then the user's remote control When a control signal is received for driving the left mowing unit via controller operation, etc., the right slope mowing unit 8 The drive unit 83R of the 0R is not driven, and only the drive unit 83L of the left slope mowing unit 80L is driven. The process begins. While the drive unit 83L of the left slope mowing unit 80L is being driven, the battery voltage reaches a predetermined value. When the voltage drops below a certain level, the alternator 70 begins supplying power, and the drive unit 83L receives power from the alternator 70. Power will also be supplied.

[0064] As a result, the grass trimmer 100 moves along the travel unit 20, and the blades 32L and 32 Using R, the grass growing on the top surface 201 of the ridge 200 is cut, and the blade 82L (or blade 82 Using R), it is possible to cut the grass growing on the slope 202 on the left (or right) side of the ridge 200. .

[0065] Next, we will describe an example in which only the top cutting unit 30 is driven. For example, the control unit 40 is user - By operating the remote controller etc., of the top mowing section 30 and the slope mowing section 80, The top cutting unit 30 is driven only to cut the grass growing on the top surface 201 (Figure 4) of the ridge 200. The control unit 40 receives a third work signal to be executed. Based on the third work signal, the engine 6 0 is activated. After the engine 60 is activated, the control unit 40 controls the user's remote control. When a control signal for driving the top mowing unit is received via operation or other means, the slope mowing unit 80 is driven. Without doing so, control is used to start driving the drive units 33L and 33R of the top cutting unit 30. Regarding the drive of the field cutting unit 30, the drive of the travel unit 20, and the power generation control of the alternator 70: This is similar to the drive based on the first work signal described above.

[0066] When only the top cutting unit 30 is driven, after receiving the third work signal, the control unit 40 The drive control signal for driving the drive unit of the slope mowing unit 80 is not received. Therefore, after receiving the third work signal, the control unit 40 drives the engine 60, but the battery 4 Power is supplied from the alternator 70 to the drive units 83L and 83R of the slope mowing unit 80. Control is implemented to prevent this from happening, and the drive units 83L and 83R of the slope mowing unit 80 are not driven. When the battery voltage falls below a predetermined value and the alternator 70 is generating power, the alternator The power from unit 70 is not supplied to the drive units 83L and 83R of the slope mowing unit 80, but to the travel unit 20 The power is supplied to the drive units 54L and 54R, and any excess power is stored in the battery 41. .

[0067] As a result, the brush cutter 100 does not drive the drive units 83L and 83R, and the blade unit 32L And 32R are driven, and using the blades 32L and 32R, the top surface 201 of the ridge 200 is used It can cut grass.

[0068] Next, we will explain an example in which the top mowing unit 30 is not driven, and only the slope mowing unit 80 is driven. In this case, for example, the control unit 40 receives instructions from a remote controller (not shown) regarding slope mowing. The fourth operation involves driving only the mowing section 80 to perform the task of cutting the grass growing on the slope 202 of the ridge 200. Receives a signal.

[0069] The control unit 40 operates the engine 60 based on the fourth work signal. When 0 receives a drive control signal to drive the drive unit of the slope mowing unit 80, The drive unit of the take-up unit 80 starts driving and receives a drive control signal to drive the travel unit 20. Then, the drive units 54L and 54R and the electric cylinders 53L and 53R are started to operate. At this time, the control unit 40 does not receive the clutch control signal, therefore the second power transmission hand The clutch of the stage is kept in the disengaged state, and power from the engine 60 drives the top cutting section 30. It is controlled so that it is not transmitted to the moving parts 33L and 33R. Therefore, the power of the engine 60 This is not transmitted to the drive units 33L and 33R, and the blades 32L and of the top cutting unit 30 The 32R will not rotate. The power of the 60 engine is for the alternator 70 to generate electricity. It is used as a power source. Power from the engine is not transmitted to the top cutting section 30. Other operations, excluding the above, are the same as those when the first work signal is received. be.

[0070] As a result, the grass trimmer 100 does not drive the drive units 33L and 33R, but the blade unit 82L and The 82R is driven, and the blades 82L and 82R are used to cut grass growing on the slope 202 of the ridge 200. It can be mowed. Note that here, the left slope mowing section 80L and the right slope mowing section 8 We have described a configuration in which both the 0R blade sections 82L and 82R are driven, but for left-side slope mowing Control to rotate only the blade portion 82 of section 80L or the right slope mowing section 80R. It is also possible.

[0071] [Escape mechanism for slope mowing section 80] Next, the slope mowing unit 80 moves upward according to the slope 202 or the top surface 201. The movement from top to bottom will be explained with reference to Figure 2. In this embodiment, slope mowing The rib section 80 moves up and down according to the shape of the ridge being worked on (shape of the slope 202 or top surface 201). The mechanism that performs this action is called the escape mechanism. When the grass cutter 100 of this embodiment performs grass cutting work, When the slope mowing unit 80 collides with an obstacle such as a clod of soil or a stone, the slope mowing unit 80 will hit the slope 20 2 or an upward force acts from the top surface 201. The connecting member 90 has a pin-shaped member 88b Since it is rotatably supported by the connecting member 88 via the obstacle, the slope 202 or When an upward force is applied from the top surface 201 to the slope cutting section 80, the connection is adjusted accordingly. Member 90 rotates upward with the pin-shaped member 88b as the pivot point (axis of rotation). When the slope mowing section 80 moves away from the obstacle, the slope mowing section 80 moves under its own weight, engaging with the engaged member 90a It returns to a position where it abuts the rear end 88c of the protruding portion 88a. That is, the connecting member 90 is connected to the aircraft body 1 The rear end 8 of the protruding portion 88a rotates upward or downward relative to the main body 14 (aircraft body 0), and the rear end 8 The downward rotation of the aircraft 10 is restricted by 8c (lower limit section). In this embodiment of the lawnmower 100, when an obstacle such as a clod of soil or a stone comes into contact with the slope mowing section 80 However, the slope mowing section 80 can escape from below to above, and the slope mowing section 80 is not damaged. This can prevent the following. In addition, the slope mowing section 80 of this embodiment follows the unevenness of the ridge, It is possible to perform grass cutting work while moving from the side upwards and from upwards downwards.

[0072] In this embodiment, a part of the connecting member 88 (the rear end 88c of the protruding portion 88a) is used as the lower limit limit portion. While this is how it functions, the configuration of the lower limit section is not limited to this. For example, slope mowing The connecting member 90 is rotatably supported by the mounting member 12 of the slope mowing section, and the slope mowing section mounting member A member that serves as a lower limit limit may be provided at 12. In this case, as in this embodiment... The main body 14 and the slope mowing attachment member 12 are not configured as separate components, and the main body 14 and slope mowing It is also possible to integrate the mounting member 12 with the lower limit section. It is also possible to configure it by attaching a stopper separately.

[0073] Furthermore, in this embodiment, the slope mowing section 80 is rotatable vertically relative to the main body 14. We have described an example of a configuration in which the lower limit position is restricted by a lower limit limit section, but a similar configuration can be used for Tenbakari It can also be applied to the mounting section 30. In this case, the support plate is attached to the main body 14. The to 15 is supported so as to be able to rotate in the vertical direction, and a support plate 1 is attached to the front end of the main body 14. A lower limit limit section is provided to regulate the lower limit position of 5. Note that the aircraft body 14 and support plate 15 refers to a connection part (not shown) that is provided separately from the main body 14 of the aircraft, and is fixed to the main body 14. It may be connected via a connecting part, and the main body 14 has the function of connecting a support plate. You can connect it this way.

[0074] [Angle adjustment mechanism for slope mowing section 80] The lawnmower 100 according to this embodiment has an angle adjustment mechanism 130 (130L and 130R) In accordance with the width of the top surface 201 of the ridge 200 and the slope of the embankment 202, the left side of the embankment is mowed in advance. The position of the mowing section 80L and the right slope mowing section 80R, the mowing surface 204L or 204R and the horizontal plane 20 The angle α between 3 and each other can be adjusted independently (see Figure 4). The structure of the adjustment mechanism 130R is the same as the structure of the angle adjustment mechanism 130L, therefore, here the angle Let's focus on the adjustment mechanism 130L in this explanation.

[0075] As shown in Figure 4, the angle adjustment mechanism 130L is, as mentioned above, for example, a lock plate 84L, support member 86L, ​​slider 85L that can slide left and right, slider 85L Between the connected support member 89L and the lock plate 84L and the left slope mowing section 80L Includes spring 97L which is stretched across.

[0076] As shown in Figures 2 and 3, the lock plate 84L is connected to the support member 86L and the left slope mowing It connects to section 80L. The lock plate 84L is a pair of plates positioned facing each other front and back. The lock plate members 84Lc and 84Ld, and a pair of lock plate members 84Lc and Each lock plate member 84 has a connecting pin 84Le that connects 84Ld at its upper end. Lc and 84Ld are formed in an elongated shape, and comb-like elongated grooves 84La are formed. Elongated groove 84L a engages with the angle adjustment pin 84Lb, described later, which is fixed to the slider 85L, and mows the left slope. Multiple positioning recesses 84Lf are provided to position and fix the angle of the cutting section 80L (blade section 82L). In this embodiment, there are five. The positioning recess 84Lf engages with the angle adjustment pin 84L To prevent b from falling out, when the angle adjustment pin 84Lb is engaged, it is diagonally upward when viewed from the rear. It is configured to be inclined. Also, each lock plate member 84Lc and 84Ld The lower end is rotatably connected to a support member 89L fixed to the left slope mowing section 80L. The lower end of the long groove 84La of each lock plate member 84Lc and 84Ld and the support member 8 A spring 97L is connected between the connection point with 9L.

[0077] The slider 85L consists of a slider body 85Ld inserted into the support member 86L and an upper clamping member. It consists of 85Lb and a lower clamping member 85Lc, and clamps the slider 85L to the support member 86L. A clamping portion 85Lbc is integrally formed for this purpose. The lower part of the slider body 85Ld is An angle adjustment pin 84Lb is fixed, inserted into the long groove 84La of the lock plate 84L. Furthermore, the lower clamping member 85Lc has a cutting section attachment part for attaching the support member 89L. 98L is fixed. The cutting unit mounting part 98L is connected via the cutting unit mounting pin 89La. The support member 89L is connected to the cutting unit mounting portion 98L, and the support member 89L is rotatable relative to the cutting unit mounting portion 98L. It is composed of.

[0078] Refer to Figure 4, and adjust the angle of the left slope mowing section 80L using the angle adjustment mechanism 130L. Let's explain the operation. Hold the handle 140L and operate the lock plate 84L, position Move the lock plate 84L so that the angle adjustment pin 84Lb is released from the recess 84Lf. This causes the lock plate 84L to rotate relative to the support member 89L, and the support member 8 9L rotates relative to slider 85L with the cutting section mounting pin 89La as the pivot point (axis of rotation). It rotates. Then, the lock plate 84L is moved further and returned to its original position. By fitting the angle adjustment pin 84Lb into a positioning recess 84Lf that is different from the recess 84Lf, , the angle of the blade portion 82L of the left slope cutting section 80L (i.e., including the rotational trajectory of the blade portion 82L) The angle α) between the cutting surface 204L and the horizontal surface 203 can be changed. The angle α increases as it engages with the recess 84Lf. Depending on the slope of the embankment 202, By changing the positioning recess 84Lf that fits into the angle adjustment pin 84Lb, the angle α can be adjusted on the slope 2 The angle can be adjusted according to the slope of 02. When the angle adjustment pin 84Lb is inserted into the uppermost positioning recess 84Lf, the angle α becomes 90. At a certain degree, the cutting surface 204L, including the rotational trajectory of the blade 82L, becomes vertical, and the lowest position When the angle adjustment pin 84Lb is inserted into the recess 84Lf, the angle α becomes 180 degrees, i.e., the blade portion 8 The mowing surface 204L, which includes the rotational trajectory of 2L, is configured to be horizontal.

[0079] As described above, in the lawnmower 100 according to this embodiment, the lock plate 84L and Using 84R, the mowing surface 204L of the left slope mowing section 80L and the right slope mowing section 80R. Furthermore, the angle α between 204R and the horizontal plane 203 can be adjusted. Therefore, this embodiment The lawnmower 100 in this configuration is suitable for the width of the top surface 201 of the ridge 200 and the slope of the embankment 202. It can perform grass cutting work.

[0080] Furthermore, the grass cutter 100 according to this embodiment has a left slope cutting section 80L and a right slope cutting section It is also possible to perform grass cutting work with the angle α of the 80R section adjusted to horizontal. In a rear view, the blade portion 32L of the top cutting section 30 and the blade portion 8 of the left slope cutting section 80L 2L, part of the blade 32R of the top cutting section 30 and part of the blade 82R of the right slope cutting section 80R overlap They are arranged in a doubled state in the left-right direction. Also, the left slope mowing section 80L and the right slope mowing section When the angle α of section 80R is adjusted horizontally, the height of the blade section 82L,R is the blade of the top cutting section 30. Sections 32L and R are configured to be the same height. This results in the left slope mowing section. When the angle α of 80L and the right slope mowing section 80R is set to horizontal, in the left-right direction, The area from the blade section 82L of the side slope mowing section 80L to the blade section 82R of the right slope mowing section 80R remains uncut. This makes it possible to mow the grass without any problems.

[0081] Furthermore, the grass cutter 100 of this embodiment has a left slope cutting section 80L and a right slope cutting section 8 It is possible to perform grass cutting work by adjusting the angle α of 0R to be symmetrical (angle α is the same on both sides). As shown in Figure 5, the grass cutting work is performed by adjusting the angle α asymmetrically (to different angles). It is also possible to do so.

[0082] [Adjustment mechanism for the left-right position of the slope mowing unit 80] The grass cutter 100 according to this embodiment has a left-side slope cutting section that matches the width of the ridge (top surface). An adjustment mechanism is provided to independently adjust the positions of the 80L and the right-side slope mowing section 80R in the left-right direction. The adjustment mechanism is located on the left slope mowing section 80L and the right slope mowing section 80R. Although they are provided on both sides, the configuration is the same on both sides, so here we will discuss the adjustment mechanism for the left side. Only the following will be explained. The leftward adjustment mechanism is configured such that the support member 86L is slidably configured as described above. A slider 85L and a cam portion 87L that locks the slider 85L to the support member 86L. , has . The cam portion 87L is fixed to the clamping portion 85Lbc of the slider 85L. In this embodiment, the cam portion 87L is composed of a cam lever, and by operating the lever 87La, upper clamping is performed. By tightening the support member 86L with member 85Lb and lower clamping member 85Lc, the support member 86 Fix the position of slider 85L relative to L. Specifically, when lever 87La is moved, A cam portion (not shown) provided at the base of bar 87La acts to grip the upper clamping member 85Lb and the lower The clamping member 85Lc tightens the support member 86L and fixes the slider 85L. When 87La is raised, the upper clamping member 85Lb and the lower clamping member 85Lc are positioned relative to the support member 86L. The clamping is released, and the slider 85L becomes able to slide against the support member 86L.

[0083] Alternatively, instead of the above configuration, the support member 86L may be configured to extend and retract in the left-right direction, and the support member 86 The configuration also allows for adjusting the left-right position of the left slope mowing section 80L by changing the length of L. It is possible. For example, the support member 86L can be composed of at least two members, and one member Other components are slidably housed inside, and the length of the support member 86L is adjustable. It should be done. Furthermore, the length of the support member 86L is fixed by providing the cam portion 87L as described above. That's fine.

[0084] [Positional relationship between blade sections 32L and 32R, and blade sections 82L and 82R] The positional relationship between blade sections 32L and 32R, and blade sections 82L and 82R, will be explained. (Figure) As shown in 1, the blade portions 32L and 32R are, in a plan view, left and right with respect to the center line 110. They are arranged symmetrically or nearly symmetrically. Also, as shown in Figure 4, in a rear view, the blade portion 32L and 32R are arranged so that they partially overlap. Also, as shown in Figure 1, In a surface view, the blade portion 32L and the blade portion 82L are aligned along parallel lines 111 parallel to the center line 110. They are arranged to overlap, and as shown in Figure 4, in a rear view, the blade portion 32L and the blade portion 82L and They are arranged so as to overlap. Also, as shown in Figure 1, in a plan view, the blade portion 32R The blade portion 82R is positioned to overlap along a parallel line 112 that is parallel to the center line 110. As shown in Figure 4, in a rear view, the blade portion 32R and the blade portion 82R are arranged to overlap. It is.

[0085] The state of the slope mowing section 80 shown in Figure 1 is at the position where the length (width) in the left-right direction is maximized. In the state adjusted to the maximum width, the blade portion 32L and the blade portion 32R overlap, and the blade portion 32 L and blade portion 82L overlap, and blade portion 32R and blade portion 82R overlap. It is solvable. Furthermore, when the grass trimmer 100 performs grass cutting work in this state, the grass cutting width is width This is W3. Also, the state of the slope mowing section 80 shown in Figure 4 is the state with the most significant adjustments. The angle is adjusted, and the blade portion 32L and the blade portion 32R overlap, and the blade portion 32L and It can be understood that the blade sections 82L and 32R overlap, and that blade section 82R is in an overlapping state. It is Noh.

[0086] Furthermore, the state of the slope mowing section 80 shown in Figure 5 is the blade section 32R of the top mowing section 30 and The blade portion 82R of the right slope mowing section 80R is aligned with the center line 11 in the plan view shown in Figure 1. It is adjusted to overlap along parallel lines 112 parallel to 0, and in a rear view, Blade sections 32L and 82L overlap, and blade sections 32R and 82R overlap. It is possible to understand this.

[0087] That is, in a rear view, the left slope mowing section 80L and the slope mowing section 80 that constitute the slope mowing section 80 The top cutting section 30 is positioned so as to be sandwiched between the blade sections 82L and 82R of the right slope cutting section 80R. Blades 32L and 32R are provided. And, in a view from the rear, blades 32L and 32 R, blade portion 82L, and blade portion 82R are arranged to be aligned in the left-right direction, and the left slope cutting section 8 Regardless of the position of the 0L and the right-side slope cutting section 80R in the left-right direction, the adjacent blades on the left and right The parts themselves, that is, the blade section 32L and the blade section 82L, and the blade section 32R and the blade section 82R, are at their tips. They are arranged so that parts of them overlap.

[0088] Therefore, in the grass cutter 100 of this embodiment, the left slope cutting section of the slope cutting section 80 Regardless of the position of the 80L and the right-side slope mowing section 80R, the rear view (perpendicular to the direction of travel) In the direction of cutting, the grass should be cut without leaving any stubble between the blade section 82L and the blade section 82R. This is possible. When mowing grass on a flat area, i.e., flat mowing, as shown in Figure 1. Furthermore, by horizontally deploying the slope cutting unit 80, the blade can be used on ridges and fields with wide top surfaces. By utilizing the width from section 82L to blade section 82R, grass cutting work can be performed efficiently. Furthermore, as shown in Figure 4, the slope cutting section 80 is angled to correspond to the slope of the ridge, and the slope Even when performing grass cutting work, the blades 32L and 32R of the top cutting section 30 and the slope cutting Since part of section 80 overlaps with the blade sections 82L and 82R, in one pass of the brush cutter 100, the ridge Not only can it mow the top and slopes of the field, but it can also mow the grass on the shoulders of the field edges without leaving any areas uncut. It is possible. Furthermore, as shown in Figure 5, the control unit 40 controls the right slope mowing unit 80R of the ridge. It is controlled to cut grass on a flat surface similar to the top surface, and the left slope cutting section 80L corresponds to the slope of the ridge. Even if the angle is adjusted by doing so, the surface (plane) parallel or nearly parallel to the top of the ridge will not be mowed. This allows for grass cutting work to be performed without leaving any areas uncut on the shoulders of the ridges.

[0089] <Second Embodiment> The second embodiment is a configuration in which the positional relationship of the blade portion differs from that of the grass trimmer 100 according to the first embodiment. explain.

[0090] Figure 6(A) is a plan view showing the positional relationship of the blades of the brush cutter 100B according to the second embodiment. Yes, Figure 6(B) is a plan view showing the positional relationship of the blades of the brush cutter 100C according to the second embodiment. This is a diagram.

[0091] As shown in Figure 6(A), in the lawnmower 100B, the blades 32R and 82R are located on the running section 20 The blades 32L and 82L are positioned in front of the running section 20, and are positioned rearward relative to the running section 20. The blade sections 32L and 32R are positioned so that a portion of them overlaps with respect to the center line 110. The blades 32R and 82R are arranged so that they are aligned in the left-right direction. This means that a portion of it is arranged to overlap along a parallel line 112 that is parallel to the center line 110. Blade sections 32L and 82L are arranged side by side in the left-right direction, and the blade sections 32L and 82L are A portion of it is arranged to overlap along a parallel line 111 that is parallel to the center line 110.

[0092] As shown in Figure 6(B), the positional relationship of the blades in the brush cutter 100C is as follows: brush cutter 10 In relation to the positional relationship of the blades at 0B, the blade 82R is positioned in front of the blade 32R. The difference lies in the fact that the blade portion 82L is positioned rearward relative to the blade portion 32L. (Grass trimmer 100) Other aspects of C are similar to the positional relationship of the blades in the brush cutter 100B, The explanation here will be omitted.

[0093] Although not shown in the diagram, in both the case of lawnmower 100B and lawnmower 100C, In a rear view, the blades 32L, 32R, 82L, and 82R are aligned in the left-right direction. They are arranged so as to be adjacent to each other, and the blades 32L and 32R are connected to the blade 82L and the blade 82R It is provided between them, and the blade portion 82L and the blade portion 32L are provided so that they partially overlap, and the blade portion 32L The blade portion 32R and the blade portion 82R are provided to partially overlap, and the blade portion 32R and the blade portion 82R partially overlap. It is provided in the rear view. Also, the blade portion 32L, blade portion 32R, blade portion 82L, and blade Sections 82R are arranged in the left-right direction, and blade sections 82L and 82R are provided at both ends. In machine 100B and brush cutter 100C, the blade portion is provided in front of the traveling portion 20 and The positional relationship with the blade located at the rear may be reversed.

[0094] The present invention has been described above with reference to the drawings, but the present invention is not limited to the embodiments described above. This invention is not a fixed invention, and can be modified as appropriate without departing from the spirit of the present invention. For example, based on each embodiment, a person skilled in the art may add, delete, or modify components as appropriate. Any actions taken are also included within the scope of the present invention, as long as they embody the essence of the present invention. Furthermore, as described above... The configurations according to each embodiment can be combined as appropriate, as long as they do not contradict each other. Technical matters common to all construction methods are included in each component even if not explicitly stated.

[0095] Other effects and benefits that are different from the effects and benefits brought about by the embodiments described above. However, this is clear from the description herein, or easily predictable to a person skilled in the art. Therefore, it is naturally understood that this is brought about by the present invention. [Explanation of Symbols]

[0096] 10: Aircraft body, 11L, 11R: Mounting parts, 12: Slope mowing section mounting parts, 14: Aircraft body 15: Support plate, 20: Running section, 20L, 20R: Crawler, 21L, 21R: Crawler Roller belt, 22L: Driving wheel, 23L: Driven wheel, 24L: Crawler frame, 30: Top Field mowing part, 31: Casing, 32, 32L, 32R: Blade part, 33L, 33R: Driving part , 40: Control part, 41: Battery, 50: Link mechanism, 50L, 50R: Link mechanism, 5 1L, 51R, 52L, 52R: Link arm, 53L, 53R: Electric cylinder, 54L , 54R: Driving part, 70: Alternator, 60: Engine, 80: Slope mowing part, 80L : Left slope mowing part, 80R: Right slope mowing part, 81L, 81R: Casing, 82L , 82R: Blade part, 32La, 32Ra, 82La, 82Ra: Grass cutting blade, 32Lb, 32 Rb, 82Lb, 82Rb: Blade mounting part, 32Lc, 32Rc, 82Lc, 82Rc: Rotating Axis, 83L, 83R: Driving part, 84L, 84R: Lock plate, 84La, 84Ra : Long groove, 84Lc, 84Ld: Lock plate member, 84Le: Connecting pin, 84Lf, 8 4Rf: Positioning recess, 85L, 85R: Slider, 85Lbc, 85Rbc: Holding part, 85Lb, 85Rb: Upper holding member, 85Lc, 85Rc: Lower holding member, 86L, 86R: Support member, 87L, 87R: Cam part, 87La, 87Ra: Lever, 88: Connecting member, 8 8a: Protrusion, 88c: Rear end, 89L, 89R: Support member, 90: Connecting member, 90a: To-be Engaged member, 90b: Arm part, 90c: Mounting member, 84Lb, 84Rb: Angle adjustment pin, 88b: Pin-shaped member, 89La: Mowing part mounting pin, 97L, 97R: Spring, 98L, 9 8R: Mowing part mounting part, 100: Grass mower, 110: Center line, 111: Parallel line, 112: Parallel line, 120: Mowing part, 130, 130L, 130R: Angle adjustment mechanism, 140L, 1 40R: Handle, 200: Ridge, 201: Top surface, 202: Slope, 203: Horizontal plane, 204L 204R: ripped noodles

Claims

1. A self-propelled grass cutter having a running section that cuts grass while traveling along the ridges, A cutting unit is located in front of the vehicle, A cutting unit is provided at the rear of the aforementioned traveling unit, Equipped with, The cutting section provided at the front and the cutting section provided at the rear include a pair of left and right cutting sections. The pair of left and right cutting units are adjustable in angle to the horizontal plane. Lawn mower.

2. The pair of left and right harvesting units are positioned symmetrically with respect to the center line in the front-rear direction that passes through the center of the machine body connected to the running unit. The lawnmower according to claim 1.

3. The cutting section provided at the front and the other cutting section provided at the rear each have a first blade and a first drive unit that drives the first blade. Each of the pair of left and right cutting sections has a second blade and a second drive unit that drives the second blade. A lawnmower according to claim 1 or 2.

4. The lawnmower according to claim 3, wherein the first drive unit and the second drive unit can be driven independently.

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