Grass cutter, ground maintenance system, and ground maintenance method

Abstract

To provide a grass mower capable of preventing an object on the ground from contacting a cutter and of efficiently maintaining the ground while preventing a travel unit from overriding the object.SOLUTION: A grass mower 10A includes: a first travel unit 20 traveling on the ground 2; a first work device 30 which is connected to the first travel unit 20 and has a cutter 31 mowing grass of the ground 2; and a first guide member 41 provided in front of the first travel unit 20. When the first travel unit 20 is traveled forward, a ball 5 (an object) on the ground 2 contacting the first guide member 41 moves along the first guide member 41.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a grass cutter, a grounds maintenance system, and a grounds maintenance method. [Background technology]

[0002] Some grass cutters for cutting grass (turf) on the grounds of golf driving ranges are equipped with a working device having a blade for cutting the grass on the grounds and a traveling device for moving the working device on the grounds (see, for example, Patent Documents 1 and 2). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] European Patent No. 1211924 [Patent Document 2] JP 2019-201574 A Summary of the Invention [Problem to be solved by the invention]

[0004] In the grass cutter described in the above-mentioned Patent Document 1, a cover is placed on the bottom of the main body to prevent balls scattered on the ground from coming into contact with the blades and being damaged. In this configuration, the sides and top of the main body are not covered with a cover, so when the wheels of the grass cutter run over a ball on the ground, the ball bounces off the wheels and goes inside the cover, causing the blades to come into contact with the ball and damaging it.

[0005] In the grass cutter described in Patent Document 2 mentioned above, the blade and a cover that covers the bottom and sides of the main body prevent balls scattered on the ground from coming into contact with the blade, preventing the balls from being damaged. However, there is a problem in that the mounting structure of the cover is complicated.

[0006] When the above-mentioned conventional grass cutter is used to maintain the ground, it is not possible to prevent the wheels of the grass cutter from running over the balls on the ground. Therefore, the grass on the ground is cut by the grass cutter after the balls on the ground are collected by the ball collector. In this way, when maintaining the ground, the grass cutter can only run on the ground after the ball collector has finished its work, which results in a problem that the work time required for the entire maintenance of the ground is long.

[0007] The present invention solves the above problems and provides a ball It prevents the blade from coming into contact with the blade and also prevents the running gear from ball To provide a grass cutter, a ground maintenance system, and a ground maintenance method capable of efficiently maintaining a ground while preventing the grass cutter from running over obstacles. [Means for solving the problem]

[0008] In order to solve the above problem, the first invention is a grass cutter, comprising a traveling device that travels on a ground, a first working device that is connected to the traveling device and has a blade for cutting grass on the ground, and a guide member provided in front of at least one of the traveling device and the first working device. ball is configured to move along the guide member. The guide member is connected to at least one of the traveling device and the first working device so as to be able to tilt freely. By tilting the guide member relative to at least one of the traveling device and the first working device, it is possible to adjust the moving direction of the ball abutting against the guide member when the traveling device is caused to travel forward.

[0009] In order to solve the above problems, a second invention is a ground maintenance system including a grass cutter and a recovery machine, the grass cutter including a first traveling device, a first working device having a blade for cutting grass on the ground, and a front part of at least one of the first traveling device and the first working device. When the first running device is caused to run forward, a first guide member is provided on the ground that abuts against the first guide member. ball is configured to move along the first guide member. The first guide member is connected to at least one of the first traveling device and the first working device so as to be able to tilt freely. By tilting the first guide member relative to at least one of the first traveling device and the first working device, it is possible to adjust the moving direction of the ball abutting against the first guide member when the first traveling device is caused to travel forward.The recovery machine has a second running device and a The ball and a second working device that collects and stores the grass. The grass cutter and the collection machine can run simultaneously or sequentially on the same ground.

[0010] In order to solve the above problems, a third invention is a ground preparation method using a grass cutter and a grass collector. The grass cutter includes a traveling device that travels on a ground, a first working device that is connected to the traveling device and has a blade for cutting grass on the ground, and a guide member provided in front of at least one of the traveling device and the first working device. The guide member is connected to at least one of the traveling device and the first working device so as to be able to tilt. By tilting the guide member relative to at least one of the traveling device and the first working device, the moving direction of a ball that comes into contact with the guide member can be adjusted when the traveling device travels forward. The grass cutter and the collector are driven simultaneously or sequentially on the same ground. The ball and collect the wastewater in a container of the recovery machine. ball The grass on the ground is cut by the blade of the grass cutter. The above The ground abutting against the guide member ball moves along the guide member. Effect of the Invention

[0011] In the present invention, the guide member of the grass cutter is on the ground. ball To push away ball This prevents the grass cutter from coming into contact with the blade and being damaged. ball This prevents the ball from running over the ground. ball Even if the grass is scattered, the grass cutter can cut the grass on the ground. ball Since the work of collecting the trash can and the work of removing the trash can can be carried out efficiently simultaneously or sequentially, the work efficiency when preparing the grounds can be improved. [Brief description of the drawings]

[0012] [Figure 1] 1 is a plan view showing an example of a grounds maintenance system according to a first embodiment of the present invention. [Diagram 2] 1 is a side view showing an example of a grounds maintenance system according to a first embodiment of the present invention. [Diagram 3]FIG. 2 is a plan view of a mower of a grounds maintenance system according to an embodiment of the present invention, the mower having a tiltable end guide. [Figure 4] FIG. 13 is a plan view showing a modified example of the grass cutter of the ground maintenance system according to the first embodiment of the present invention, in which balls can be collected by the guide member. [Diagram 5] FIG. 11 is a plan view showing an example of a grounds maintenance system according to a second embodiment of the present invention. [Figure 6] FIG. 13 is a plan view showing a modified example of the grounds maintenance system according to the second embodiment of the present invention, the plan view showing a configuration having linear guide members. [Figure 7] FIG. 13 is a plan view showing a modified example of the grounds maintenance system according to the second embodiment of the present invention, the plan view showing a configuration having a slidable guide member. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] EMBODIMENTS OF THE PRESENT DISCLOSURE and reference examples The above will be described in detail with reference to the drawings as appropriate. In addition ,fruit embodiment and reference examples In the description, the same components are denoted by the same reference numerals, and duplicate descriptions will be omitted. The following embodiments and reference examples Now, a case will be described in which the grass cutter, the ground maintenance system and the ground maintenance method of the present invention are applied to a golf driving range (ball court).

[0014] [First Reference example ] first Reference example As shown in FIG. 1 and FIG. 2, the ground maintenance system 1A includes a grass cutter 10A for cutting grass (turf) on the ground 2, and a ball cutter 10B for cutting the grass on the ground 2. 5 The grass cutter 10A and the collection machine 50A can run on the upper surface of the same ground 2 simultaneously or sequentially.

[0015] The grass cutter 10A is a vehicle that cuts grass on the ground 2 while moving on the upper surface of the ground 2. The grass cutter 10A is equipped with a first traveling device 20 that travels on the upper surface of the ground 2, a first working device 30 having a blade 31 that cuts grass on the ground 2, and a first guide member 41 provided on the first traveling device 20. The first working device 30 is connected to the first traveling device 20. Reference example In the grass cutter 10A, the first traveling device 20 and the first working device 30 are integrally constructed.

[0016] As shown in FIG. 1, the first traveling device 20 includes a vehicle body 21 and four wheels 22 provided on the front, rear, left and right sides of the vehicle body 21. The first working device 30 cuts grass on the ground 2 by rotating a blade 31 provided at the lower center of the body 21. A driving device (not shown), such as a motor or an engine, for driving the wheels 22 of the first traveling device 20 and for rotating the blade 31 is mounted inside the vehicle body 21.

[0017] The grass mower 10A is configured such that a control unit mounted on the vehicle body 21 drives the first traveling device 20 and the first working device 30 based on position information from a satellite positioning system (GNSS: Global Navigation Satellite System) such as GPS, millimeter wave radar, or the like, to move over the upper surface of the ground 2. Note that the grass mower 10A may drive the first traveling device 20 and the first working device 30 by remote control using a transmitter.

[0018] A first guide member 41 is provided in front of the body 21 of the first traveling device 20. The ball 5 on the ground 2 comes into contact with the first guide member 41 before the wheels 22 of the first traveling device 20 and the blade 31 of the first working device 30. This prevents the ball 5 from contacting the blade 31 and also prevents the wheels 22 from running over the ball 5 on the ground 2. Since the first guide member 41 extends in the left-right direction, the ball 5 on the ground 2 moving along the first guide member 41 can be directed in the left-right direction, and the ball 5 can be moved away from the car body 21. The material of the first guide member 41 is not particularly limited, but examples thereof include metal, resin, and elastic body.

[0019] The first guide member 41 is fixed to the front end surface of the vehicle body 21. Both left and right end portions of the first guide member 41 protrude outward beyond the left and right outer ends of the left and right wheels 22, 22. In this manner, the ball 5 is moved outward beyond the left and right outer ends of the left and right wheels 22, 22, and therefore contact between the wheels 22 and the ball 5 can be prevented.

[0020] first Reference example The first guide member 41 is curved so as to be displaced rearward from the center toward both ends in the left-right direction.

[0021] As a result, when the grass cutter 10A is driven forward, the ball 5 on the ground 2 that comes into contact with the first guide member 41 moves smoothly from the left-right direction to the rear, preventing the ball 5 from accumulating around the first guide member 41 and moving away in the opposite direction to the traveling direction of the vehicle body. This configuration is particularly effective in a situation where a large number of balls 5 are scattered on the ground 2 and the balls 5 come into contact with the car body 21 one after another.

[0022] When the grass cutter 10A is caused to travel forward by the first traveling device 20, if the ball 5 on the ground 2 comes into contact with the front surface of the first guide member 41, the ball 5 moves left and right along the front surface of the first guide member 41 and moves outward beyond the wheels 22. In this manner, the grass cutter 10A moves forward while the ball 5 on the ground 2 is pushed aside by the first guide member 41.

[0023] The recovery machine 50A is a vehicle that moves over the upper surface of the ground 2 and collects and stores balls 5, which are a number of objects scattered on the ground 2. The recovery machine 50A includes a second running device 60 that runs on the upper surface of the ground 2, and a second working device 70 that collects and stores the balls 5 on the ground 2. The second working device 70 is connected to the second traveling device 60. Reference example In the recovery machine 50A, the second traveling device 60 and the second working device 70 are integrally configured.

[0024] The second traveling device 60 includes a vehicle body 61 and four wheels 62 on the front, rear, left and right sides of the vehicle body 61 .

[0025] The second working device 70 comprises a drum 71 for collecting balls 5 on the ground 2 and a container 72 capable of storing multiple balls 5, the drum 71 and the container 72 being arranged in the center of the vehicle body 61 in the fore-and-aft direction.

[0026] The drum 71 is a cylindrical member that rotates about an axis in the left-right direction. The drum 71 is configured to rotate so that the grooves on the outer periphery of the drum 71 scoop up the ball 5 on the ground 2. Container 72 is a tank capable of storing a plurality of balls 5. Balls 5 picked up from ground 2 by drum 71 are sent from drum 71 into container 72. Container 72 is provided with a discharge mechanism that discharges balls 5 to the outside of vehicle body 61.

[0027] A driving device (not shown), such as a motor or an engine, for driving the wheels 62 of the second traveling device 60 and for moving the drum 71 up and down is mounted inside the vehicle body 61.

[0028] The recovery machine 50A is configured such that a control unit mounted on the vehicle body 61 drives the second traveling device 60 and the second work device 70 based on position information obtained from a satellite positioning system (GNSS: Global Navigation Satellite System) such as GPS, millimeter wave radar, or the like, to autonomously move on the upper surface of the ground 2. Note that the recovery machine 50A may drive the second traveling device 60 and the second work device 70 by remote control using a transmitter.

[0029] Next, a method of preparing the ground 2 of a golf driving range using the above-described ground preparation system 1A will be described. first Reference example 1 and 2, the grass cutter 10A and the collector 50A are run simultaneously on the same field 2. In this case, if the grass cutter 10A is controlled to move in an area after the collector 50A has passed, the ball 5 will not hit the grass cutter 10A. The grass cutter 10A may also be run following the collector 50A.

[0030] The recovery machine 50A moves over the upper surface of the ground 2, collects the balls 5 on the ground 2 with a drum 71, and stores the balls 5 in a container 72. When a large number of balls 5 are stored in the container 72, the recovery machine 50A moves to a discharge area provided inside or outside the ground 2, and discharges the balls 5 in the container 72.

[0031] The grass cutter 10A cuts grass on the ground 2 with the blade 31 while moving over the upper surface of the ground 2. At this time, the grass cutter 10A moves forward (in the traveling direction) while pushing aside the ball 5 on the ground 2 with the first guide member 41.

[0032] In this way, by running the grass cutter 10A and the retriever 50A on the ground 2 at the same time, the balls 5 scattered on the ground 2 are retrieved and the grass on the ground 2 is cut at the same time, thereby preparing the ground 2.

[0033] In the above-described grass cutter 10A, ground maintenance system 1A, and ground maintenance method, as shown in Fig. 1, when the grass cutter 10A travels on the ground 2, the first guide member 41 of the grass cutter 10A pushes aside the ball 5 on the ground 2. This makes it possible to prevent the ball 5 from coming into contact with the blade 31 and being damaged, and also makes it possible to prevent the wheels 22 of the grass cutter 10A from running over the ball 5 on the ground 2.

[0034] In this way, even if the balls 5 are scattered on the ground 2, the grass on the ground 2 can be cut by the grass cutter 10A. By simultaneously cutting the grass by the grass cutter 10A and collecting the balls 5 by the collection machine 50A, the work efficiency when preparing the ground 2 can be improved.

[0035] The above is the first aspect of the present invention. Reference example The present invention relates to the first Reference example The present invention is not limited to the above and can be modified as appropriate without departing from the spirit of the present invention. first Reference example In the above, it is sufficient that the grass cutter 10A is provided with the first guide member 41, and the grass cutter 10A does not necessarily have to perform grass cutting work. For example, in periods when mowing is not required or when priority is given to collecting the balls 5 on the ground 2, the grass cutter 10A may be configured not to perform mowing but to move and collect the balls 5 along the first guide member 43. In this configuration, the balls 5 may be collected by moving the collector 50A through an area where the grass cutter 10A has gathered a large number of balls 5, thereby improving the efficiency of maintaining the ground 2.

[0036] first Reference example In the embodiment, as shown in FIG. 1, the grass cutter 10A and the collection machine 50A are run simultaneously on the ground 2, but the grass cutter 10A and the collection machine 50A may be run sequentially on the ground 2. For example, while one of the grass cutter 10A and the recovery machine 50A is traveling on the ground 2, the other of the grass cutter 10A and the recovery machine 50A may be traveling on the ground 2. Moreover, only one of the grass cutter 10A and the recovery machine 50A may be run on the ground 2 and the work completed, and then the other of the grass cutter 10A and the recovery machine 50A may be run on the ground 2 alone.

[0037] As long as the first guide member 41 can push aside the ball 5 on the ground 2, the shape and size of the first guide member 41 are not limited. For example, the figure 3 shows As an embodiment of the present invention, End guides 42, 42 may be connected to both left and right ends of the first guide member 41. The end guide 42 is tiltable about an axis in the up-down direction relative to the first guide member 41. In this configuration, by adjusting the inclination angle of the end guide 42 relative to the first guide member 41, the moving direction of the ball 5 pushed aside by the first guide member 41 and the end guide 42 can be adjusted. 4, a configuration may be adopted in which a plurality of balls 5 are moved along first guide member 43 while being held by first guide member 43. In this case, the operation of collecting balls 5 and the operation of cutting grass can be performed simultaneously by a single device.

[0038] first Reference example In the ground maintenance system 1A, as shown in FIG. 1, a first guide member 41 is provided only on the grass cutter 10A, but a guide member may also be provided on the collection machine 50A so that the ball 5 is guided to the drum 71 by the guide member.

[0039] The configurations of the blade 31 and the first traveling device 20 of the grass cutter 10A are not limited, and various existing devices can be used. Similarly, the configurations of the collection mechanism and the second traveling device 60 of the collection machine 50A are not limited, and various existing devices can be used.

[0040] first Reference exampleIn the ground maintenance system 1A, the ground 2 is maintained as a driving range for golf, but the type of the ground 2 is not limited. For example, the ground 2 may be used for cutting grass on farmland. In addition, as a reference example of the present invention, It is also possible to collect objects such as fruits and nuts on the ground.

[0041] [Second Reference example ] Next, the second Reference example Next, the ground maintenance system 1B will be described. second Reference example As shown in FIG. 5, the ground maintenance system 1B includes the first Reference example It has a configuration substantially similar to that of the grounds maintenance system 1A (see FIG. 1) except that the working device and the traveling device are separate and that guide members are provided on the grass cutter and the collection device.

[0042] second Reference example In the grass cutter 10B, the first traveling device 20 and the first working device 30 are configured separately. The first working device 30 is detachably connected to the rear part of the vehicle body 21 of the first traveling device 20. Reference example The first working device 30 is provided with four wheels 32 on the front, rear, left and right sides. Reference example The first working device 30 travels while being towed by the first traveling device 20.

[0043] second Reference example In the grass cutter 10B, two first guide members 44, 44 are provided on the left and right sides of the front end of the vehicle body 21. Reference example The first guide member 44 is curved so as to be displaced rearward from the end on the central side in the left-right direction toward the outer end. Reference example The left and right first guide members 44, 44 are rotatable about an axis in the vertical direction at the center in the left-right direction. Here, the left and right first guide members 44, 44 are rotatable about an axis in the vertical direction, but the left and right first guide members 44, 44 may be fixed to the front end portion of the vehicle body 21 without being rotatable.

[0044] second Reference exampleThe left and right first guide members 44, 44 of the grass mower 10B are continuous with each other at the center of the front end of the body 21 in the left-right direction. As a result, when the first traveling device 20 is caused to travel forward, the ball 5 that comes into contact with the front surfaces of the left and right first guide members 44, 44 moves along the first guide members 41 to the outside of the wheels 22.

[0045] Furthermore, the second Reference example The outer ends of the left and right first guide members 44, 44 protrude outward from the outer ends in the left and right direction of the four front, rear, left and right wheels 22 of the first traveling device 20 and the four front, rear, left and right wheels 32 of the first working device 30. This makes it possible to prevent the ball 5 on the ground 2 moved by the first guide members 44 from coming into contact with the blade 31 of the first working device 30 which is towed by the first traveling device 20 and traveling, and to prevent the wheels 32 of the first working device 30 from running over the ball 5 on the ground 2.

[0046] second Reference example In the recovery machine 50B, the second traveling device 60 and the second working device 70 are configured separately. The second working device 70 is detachably connected to the rear part of the vehicle body 61 of the second traveling device 60. Reference example The second working device 70 is provided with four wheels 73 on the front, rear, left and right sides. Reference example The second working device 70 travels while being towed by the second traveling device 60.

[0047] second Reference example The second traveling device 60 of the recovery machine 50B and the first traveling device 20 of the grass cutter 10B are of the same model and have the same configuration. Therefore, two second guide members 45, 45 are also provided on the left and right sides at the front end of the vehicle body 61 of the recovery machine 50B, and the second guide members 45 are rotatable about an axis in the vertical direction. Similar to the first guide member 44, the second guide member 45 may also be fixed to the front end of the vehicle body 21 without being rotatable about an axis in the vertical direction.

[0048] second Reference exampleThe second guide member 45 of the collector 50B is fixed in a state where the first guide member 44 of the grass cutter 10B is rotated about 180 degrees around a vertical axis or where the first guide member 44 is turned upside down. The left and right second guide members 45, 45 are separated from each other at the center in the left-right direction of the front end of the vehicle body 61. As a result, when the second running device 60 is caused to run forward, the ball 5 that abuts against the front faces of the left and right second guide members 45, 45 moves along the front faces of the second guide members 45 toward the center in the left-right direction of the vehicle body 61, passes between the two second guide members 45, 45, and is guided to the drum 71.

[0049] Also, the second Reference example The outer end of the second guide member 45 protrudes outward beyond the vehicle body 61. In this configuration, the range in which the balls 5 can be collected is wider than in a recovery machine that does not have the second guide member 45, so that more balls 5 on the ground 2 can be collected.

[0050] In the ground maintenance system 1B as described above, the first running device 20 of the mower 10B and the second running device 60 of the collection machine 50B are of the same model, so that the cost associated with maintaining the ground 2 can be reduced.

[0051] The above is the second aspect of the present invention. Reference example The present invention relates to the second Reference example Without being limited to the above, Reference example Similarly, modifications can be made as appropriate without departing from the spirit of the invention. second Reference example As shown in FIG. 1, the first guide member 44 and the second guide member 45 are curved in an arc shape, but as shown in FIG. 6, the first guide member 44 and the second guide member 45 may be formed in a straight line.

[0052] second Reference exampleThe first guide member 44 and the second guide member 45 are configured to rotate about an axis in the up-down direction as shown in Fig. 1, but the first guide member 44 and the second guide member 45 may be configured to be slidable in the front-rear direction as shown in Fig. 7. In this configuration, by moving the first guide member 44 diagonally backward and outward from a state in which the first guide members 44, 44 are connected as in the grass cutter 10B, the second guide members 45, 45 can be separated as in the collection machine 50B.

[0053] second Reference example In the grounds maintenance system 1B, as shown in Fig. 1, the first traveling device 20 is provided with the first guide member 44, but the first work device 30 may also be provided with the first guide member 44. Similarly, the second traveling device 60 is provided with the second guide member 45, but the second work device 70 may also be provided with the second guide member 45.

[0054] second Reference example In the ground maintenance system 1B, since the first traveling device 20 and the second traveling device 60 are the same model, a recovery machine can be configured by removing the first working device 30 from the first traveling device 20 and attaching the second working device 70 to the first traveling device 20. Also, a grass cutter can be configured by removing the second working device 70 from the second traveling device 60 and attaching the first working device 30 to the second traveling device 60. [Explanation of symbols]

[0055] 1A Ground Maintenance System (First Reference example ) 1B Ground Maintenance System (Second Reference example ) 2. Ground 5. Ball 10A Grass trimmer (first Reference example ) 10B Grass trimmer (second Reference example ) 20 First running gear 21 Body 22 wheels 30 First working device 31 Knives 32 wheels 41 First guide member (first Reference example ) 42 End guide 43 First guide member (first Reference example (A variation of 44 First guide member (second Reference example ) 45 Second guide member 50A Recovery Machine (First Reference example ) 50B Recovery Machine (Second Reference example ) 60 Second traveling device 61 Body 62 wheels 70 Second working device 71 Drums 72 Container 73 Wheels

Claims

1. A running device that runs on the ground; A first working device connected to the traveling device and having a blade for cutting grass on the ground; A guide member provided in front of at least one of the traveling device and the first working device, When the running device is caused to run forward, the ball on the ground that has come into contact with the guide member moves along the guide member, the guide member is connected to at least one of the traveling device and the first working device so as to be able to tilt freely; A grass mower characterized in that the direction of movement of the ball abutting the guide member can be adjusted when the traveling device is traveling forward by tilting the guide member relative to at least one of the traveling device and the first working device.

2. The grass cutter according to claim 1, The guide member extends in the left-right direction, A grass mower, characterized in that, when the traveling device is caused to travel forward, the ball abutting against the guide member moves in the left-right direction along the guide member.

3. The grass cutter according to claim 2, The traveling device is provided with left and right wheels, The brush cutter, wherein the guide member protrudes outward beyond outer ends of the wheels in the left-right direction.

4. A grass cutter according to any one of claims 1 to 3, The traveling device and the first working device are configured separately from each other, The grass cutter, wherein the first working device is detachably connected to the traveling device.

5. A grass cutter according to claim 4, a second working device for collecting and storing the balls on the ground; A grass mower, characterized in that the second working device can be connected to the traveling device from which the first working device has been detached.

6. 1. A grounds maintenance system including a mower and a collector, comprising: The grass cutter is A first running device; A first working device having a blade for cutting grass on the ground; a first guide member provided in front of at least one of the first traveling device and the first working device, When the first running device is caused to run forward, the ball on the ground that has come into contact with the first guide member moves along the first guide member, the first guide member is connected to at least one of the first traveling device and the first working device so as to be able to tilt freely; by tilting the first guide member relative to at least one of the first traveling device and the first working device, a moving direction of the ball abutting against the first guide member can be adjusted when the first traveling device is caused to travel forward, The recovery machine includes: A second traveling device; a second working device that collects and stores the balls on the ground; A ground maintenance system, characterized in that the grass cutter and the collection machine are capable of running simultaneously or sequentially on the same ground.

7. A grounds maintenance system as claimed in claim 6, comprising: The first traveling device and the first working device are configured separately from each other, The first working device is detachably connected to the first traveling device, The second traveling device and the second working device are configured separately from each other, A ground maintenance system, wherein the second work apparatus is removably connected to the second traveling apparatus.

8. A ground maintenance system as claimed in claim 6 or claim 7, comprising: The recovery machine includes: a second guide member provided in front of at least one of the second traveling device and the second working device, A ground preparation system characterized in that, when the second running device is caused to run forward, the ball that comes into contact with the second guide member moves along the second guide member.

9. A ground maintenance system according to any one of claims 6 to 8, comprising: A ground maintenance system, characterized in that the retriever is capable of collecting the golf balls from the top surface of the ground.

10. A ground maintenance method using a grass cutter and a grass collector, comprising: The grass cutter is A running device that runs on the ground; A first working device connected to the traveling device and having a blade for cutting grass on the ground; a guide member provided in front of at least one of the traveling device and the first working device, the guide member is connected to at least one of the traveling device and the first working device so as to be able to tilt freely; by tilting the guide member relative to at least one of the traveling device and the first working device, a moving direction of the ball abutting against the guide member can be adjusted when the traveling device is caused to travel forward, The grass cutter and the recovery machine are run simultaneously or sequentially on the same ground, Collecting the balls on the ground with the collecting machine and storing the balls in a container of the collecting machine; Cutting grass on the ground with the blade of the grass cutter; A ground preparation method, characterized in that the ball on the ground abutting against the guide member provided at the front end of the grass cutter in the traveling direction moves along the guide member.

11. A ground preparation method as claimed in claim 10, comprising: The ground is provided in a golf ball court, A ground preparation method, comprising the steps of: (a) collecting the golf balls from the ground;

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