KR20240057034A - Unmanned electric cart for sports ground management - Google Patents

Abstract

The present invention relates to an unmanned electric cart for sports ground management, and more specifically, to level the bottom surface of a sports ground made of dirt, while the worker performs the leveling work while controlling the driving direction and driving speed using a controller from a distance. The present invention relates to an unmanned electric cart for sports ground management that improves management efficiency by performing foreign matter removal, leveling work, etc. in a single work process. To this end, the present invention includes a frame, a body covering the frame, and a body disposed on the frame. An unmanned electric cart including a driving caster, a battery, and a drive motor that operates by receiving electricity from the battery to drive the driving caster, comprising: a flat part that is detachably coupled to the frame to scrape off protrusions on the ground; A ground preparation unit including a collection unit that separates and collects foreign substances contained in the soil and a roller that compacts the ground; a travel control unit that controls the operation of the drive motor according to the detection value detected through the sensing unit; An elevating unit disposed on the frame, coupled with the ground clearance unit, and operating by applied power and signals to raise or lower the ground clearance unit; A sensing unit including a sensor disposed on the body to detect obstacles in front, sides, and below the body, and a GPS to check location information of the body; And a controller that is connected to the driving control unit to enable wireless communication and controls the operation of the driving control unit from a distance.

Description

Unmanned electric cart for sports ground management}

The present invention relates to an unmanned electric cart for sports ground management, and more specifically, to level the bottom surface of a sports ground made of dirt, while the worker performs the leveling work while controlling the driving direction and driving speed using a controller from a distance. This is about an unmanned electric cart for sports ground management that improves management efficiency by performing foreign matter removal and leveling work in a single work process.

Playgrounds where sports activities such as ball games take place or are provided at schools have sand or dirt floors. Playgrounds made of sand or dirt, i.e. sports grounds, have a rough surface due to various conditions or have some of the stones on the surface. Because it is exposed, it is a major cause of injuries and accidents during use.

In particular, in the case of school playgrounds, olivine playgrounds were used, which were created to use eco-friendly materials. The olivine playgrounds were introduced because they generate less dust and have good drainage efficiency, but on the contrary, they generate asbestos, a class 1 carcinogen, causing fatal health problems. there is.

In addition, safety compatibility issues have been raised about artificial turf filler (rubber powder), natural grass playgrounds are criticized for being ornamental when used heavily, and playgrounds made of urethane (elastic packaging material) have low drainage efficiency and are highly slippery. There was a problem with accidents occurring.

In the case of playgrounds made of soil (massato), the surface is composed of mixed soil that is a mixture of soil particles, moisture, air, and base components. Due to its characteristics, it is weak to rain and wind and sensitive to climate change, so careful management is required. For example, when it rains, If left unmanaged more than 3 times or for more than 6 months, there is a problem that the playground is damaged to the extent that it cannot serve as a playground, and the lower layer of the surface and the lower part of the topsoil layer turn black or swell, making the soil weak and weeds around the playground. As time goes by, water pooling occurs concentrated in areas that are not level, and when it rains, the area where water pooling occurs turns into mud, making it unusable.

Therefore, leveling work is performed to remove foreign substances on the surface and organize uneven surfaces at regular intervals. This management is carried out several times using tools such as brooms or brushes to first even out the surface or remove foreign substances such as stones. After tidying up the surface, the surface is firmly compacted by moving large roller equipment along the surface.

However, the work of cleaning the surface using a broom or brush required the use of work time and manpower in proportion to the area of the sports ground, and even if a large manpower was invested, it was difficult to completely remove foreign substances.

In addition, since the work of preparing the surface and the work of flattening the surface are carried out separately, there is a problem that not only the time required for the work increases, but also the cost.

The prior art proposed to solve the above problems includes Korea Registered Utility Model No. 20-0472847, which relates to a stadium floor preparation device that smoothens a stadium floor made of soil such as a tennis court, It is comprised of a flexible press plate with a length and width of 500 to 3000 mm, a plurality of brushes densely planted on the bottom of the press plate, and a traction means that allows the press plate to be placed on the stadium floor and towed.

The prior art made as described above can be expected to have some effect in removing foreign substances from the playground, but there is a problem that additional leveling work must be performed because leveling work cannot be performed.

In addition, Republic of Korea Patent No. 10-1863278 provides 'playground cleaning equipment', and in the prior art, in order to solve the above-mentioned problems, a flat part for crushing the compacted sand of the playground ground and a collecting part and surface for removing foreign substances are used. The compaction rollers for pressing are arranged sequentially and moved while being towed by a traveling device such as a four-wheeled motorcycle or passenger car, so that leveling of the playground and removal of foreign material can be done at once.

However, since the above prior art can be used only when a separate traveling device is installed for towing, there is a problem in that it cannot be used in terrain or locations where towing means such as four-wheeled motorcycles, passenger cars, etc. cannot move, and the towing means cannot be used while driving. There were problems such as foreign substances becoming embedded in the surface due to the load.

Republic of Korea Registered Utility Model No. 20-0472847 Republic of Korea Patent No. 10-1863278

The present invention was proposed to solve the above problems. The worker performs leveling while controlling the driving direction and speed using a controller from a distance, and removes foreign substances and smoothes in one work process. The purpose is to provide unmanned electric carts for sports ground management that improve management efficiency.

In addition, the present invention can save labor costs by allowing removal of foreign substances and leveling of the sports ground with a minimum number of workers, and since no towing means is required, the problems of smoke generation and fine dust due to the operation of the towing means are eliminated. The purpose is to provide an unmanned electric cart for sports ground management that can be blocked in advance.

In addition, the purpose is to provide an unmanned electric cart for sports ground management that can prevent accidents by checking for foreign substances while driving through multiple sensors as well as preventing collisions with pedestrians or other objects.

In order to achieve the above object, the present invention,

An unmanned electric cart comprising a frame, a body covering the frame, a driving caster disposed on the frame, a battery, and a drive motor that operates by receiving electricity from the battery and driving the driving caster,

a ground preparation unit that is detachably coupled to the frame and includes a flat part that scrapes off protrusions on the ground, a collection part that separates and collects foreign substances contained in the soil, and a roller that compacts the ground;

a travel control unit that controls the operation of the drive motor according to the detection value detected through the sensing unit;

An elevating unit disposed on the frame, coupled with the ground clearance unit, and operating by applied power and signals to raise or lower the ground clearance unit;

A sensing unit including a sensor disposed on the body to detect obstacles in front, sides, and below the body, and a GPS to check location information of the body; and

It includes a controller that is connected to the driving control unit to enable wireless communication and controls the operation of the driving control unit from a distance.

In addition, the frame is further equipped with an air bucket to maintain the ground leveling unit horizontal with respect to the ground during driving and ground clearing.

In addition, the lifting unit is characterized in that it includes a lifting driving means that receives power from the battery and operates by receiving a signal from the travel control unit, and a lifting frame that connects the lifting driving means and the ground clearance unit.

At this time, the lifting frame is disposed at the lower part of the frame and includes a basket including a floor surface on which the ground clearance unit is placed, a lifting bar protruding upward from the edge of the floor surface, and a rail on which the lifting bar of the basket is movably disposed. And, it is characterized in that it includes a power transmission device connecting the lifting bar and the lifting driving means.

In addition, the ground clearing unit is characterized in that the flat part, the collecting part, and the roller are arranged sequentially from front to back, assuming that the direction in which the body moves is forward.

In addition, the body includes a display that displays environmental information such as remaining battery information, available time of the battery, operation information of the drive motor, external temperature, humidity, etc., and receives a signal from the driving control unit to emit light to the outside. Alternatively, an alarm means for emitting sound may be further provided.

The present invention achieved as described above has the advantage of being able to provide high operational reliability as well as high efficiency in foreign matter removal and leveling operations.

In addition, the present invention has the advantage of improving economic efficiency by reducing labor costs because one manager can control the driving speed and driving direction as well as the height of the ground clearance unit using a controller at a distance.

In addition, the present invention can shorten the work time by reducing the weight of each component and controlling the torque of the drive motor, and can minimize the time required for work by performing foreign matter removal, leveling work, and compaction work at once. It works.

In addition, the present invention has the effect of improving safety by preventing collisions by detecting foreign substances as well as pedestrians and various objects placed on the sports ground through detection values detected through a plurality of sensors.

Figure 1 is an exemplary diagram showing an unmanned electric cart for sports ground management according to the present invention.
Figure 2 is an exemplary diagram schematically showing a frame constituting the present invention.
Figure 3 is an exemplary diagram schematically showing a paper organizing unit constituting the present invention.
Figure 4 is a schematic diagram showing a travel control unit constituting the present invention.
Figure 5 is a schematic diagram showing a lifting unit constituting the present invention.

Hereinafter, other purposes and features of the present invention in addition to the above purposes will be clearly revealed through the description of the embodiments with reference to the accompanying drawings.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as generally understood by a person of ordinary skill in the technical field to which the present invention pertains. Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and should not be interpreted in an ideal or excessively formal sense unless explicitly defined in the present application. No.

Hereinafter, a preferred embodiment of the unmanned electric cart for sports ground management according to the present invention will be described with reference to the attached drawings.

First, the unmanned electric cart (1) for sports ground management according to the present invention includes a frame (10), a body (20) covering the frame (10), a running caster (30) disposed on the frame (10), and a battery. (B) and a drive motor (40) that operates by receiving electricity from the battery (B) and drives the driving caster (30), and is detachably coupled to the frame (10). A flat part 51 that scrapes off the protrusions of the ground, a collection part 52 that separates and collects foreign substances contained in the soil, a ground preparation part 50 including a roller 53 that compacts the ground, and a driving device for driving. A travel control unit 60, which controls the travel speed and direction of the caster 30, and the ground clearance unit 50, which are disposed on the frame 10, are combined, and operate by applied power and signals to control the ground clearance unit. A lifting unit 70 that raises or lowers the body 20, a sensor 81 disposed on the body 20 to detect obstacles in front, sides, and below the body 20, and a It includes a sensing unit 80 including a GPS 82 that checks location information, and a controller 90 that is connected to the driving control unit 60 to enable wireless communication and controls the operation of the driving control unit 60 from a distance. do.

The frame 10 is formed by welding or combining a plurality of bars, and the shape and structure of the frame 10 can be changed depending on the shape and arrangement position of each structure, which will be described later, and is shown in the drawing. and is not limited to ratios.

At this time, the frame 10 is preferably made of a metal material that can guarantee durability while reducing the overall load. For example, it is made of stainless steel that is light in weight but can provide a certain strength and is resistant to moisture so there is no risk of corrosion. However, additional reinforcing materials or reinforcing pipes may be placed in areas where safety must be ensured by supporting the deployed structure.

Meanwhile, the frame 10 is further provided with an air bucket 11 to keep the ground clearing unit 50 horizontal with respect to the ground during driving and ground clearing. The air bucket 11 is provided with the frame 10. It is placed on both sides of the width direction, and air is injected or discharged through an air pump (not shown in the drawing) to balance the left and right sides of the frame 10.

This air bucket 11 detects the tilt of the frame 10 to one side through the sensor 81 of the sensing unit 80, which will be described later, and adjusts the tilt angle by injecting or expelling air according to the detected tilt. By doing so, the ground leveling unit 50, which will be described later, is maintained in horizontal contact with the ground.

The body 20 is coupled to cover the frame 10 and protects the components placed on the frame 10 from dust, foreign substances, and moisture.

This body 20 may have a corrosion-resistant coating layer formed on the surface to minimize the adsorption of dust and reduce corrosion caused by rainwater, and may be made of a transparent material or have a transparent window formed in some areas so that the inside can be viewed from the outside. there is.

Meanwhile, the body 20 is provided with a display 21 that displays environmental information such as information on the remaining amount of the battery B, which will be described later, the usable time of the battery, operation information of the driving motor 40, which will be described later, and external temperature and humidity. It is further provided with an alarm means 22 that receives a signal from the driving control unit 60, which will be described later, and emits light or sound to the outside.

The display 21 operates by the applied power and displays the above-mentioned information externally, allowing the manager to check the operation information of the battery and drive motor in real time, and checks the temperature and humidity of the work site. Allows you to adjust the appropriate driving speed according to.

The alarm means 22 emits light or sound when the remaining battery charge is below a certain percentage, an object moving such as a pedestrian is detected around the body 20, or a foreign object of a predetermined size or larger is detected on the surface or upper surface of the sports ground. Use to notify the outside world so that the manager can take follow-up action.

This alarm means 22 may be made of a warning light that emits light to the outside, a speaker that emits sound, or all of these.

The traveling caster 30 is disposed below the frame 10 and moves the frame 10 while rotating by power transmitted from a drive motor 40, which will be described later. The structure and shape of the driving caster 30 can be changed in various ways, and of course, it is not limited to the structure and shape shown in the drawings.

In addition, the driving caster 30 can control the driving direction of the frame 10 through a steering means (not shown in the drawing). For example, the driving caster 30 uses the rotational force of the drive motor 40, which will be described later, to control the driving direction of the frame 10. ) The running direction of the frame 10 can be adjusted by adjusting the distributed rotational force in the process of distribution.

The battery (B) is used to supply electricity to components requiring power, and is made of a rechargeable type capable of charging and discharging. It receives power from an external terminal, stores it, and then supplies the required power. An example is a lithium-ion battery. can be used

The drive motor 40 receives electricity from the battery B, operates by receiving an execution command signal from the driving control unit 60, which will be described later, and supplies rotational force to the driving caster 30 to rotate it. , the drive motor 40 that can provide the necessary output is selected and used in consideration of the rotational force for moving the frame 10.

The ground preparation unit 50 is detachably coupled to the frame 10 to prepare the ground, that is, the surface. To this end, it is composed of a flattening part 51 that scrapes off the protrusions of the ground, and a flattening part 51. It includes a collection unit 52 that separates and collects foreign substances contained in the soil while passing through the scraped soil, and a compaction roller 53 that hardens the ground by pressurizing and compacting the soil from which the foreign substances have been separated.

When the moving direction of the frame 10 is assumed to be forward, the ground clearing unit 50 is arranged in the order of the flat part 51, the collecting part 52, and the roller 53 to remove foreign substances through one operation. The time required for leveling work can be minimized by removing, collecting removed foreign substances, and compacting the scratched ground.

Meanwhile, the specific configuration of the ground organizing unit 50 utilizes the structure of 'playground organizing equipment' proposed and registered by the applicant of the present invention, Republic of Korea Patent No. 10-1863278 (registered on May 25, 2018), and detailed information about this is provided. The explanation is omitted.

The travel control unit 60 operates by the applied power and controls the travel speed and direction of the travel caster 30, and executes control commands transmitted through the controller 90, which will be described later, or performs sensing, which will be described later. It is configured to compare the sensed value detected through the unit 80 with a previously stored reference value and execute a control command corresponding to the calculated result value.

Here, looking in more detail at the operation of the driving control unit 60 based on the detection value detected through the sensing unit 80, a receiving unit 61 that receives the detection value detected through the sensing unit 80, the A calculation unit 62 that calculates a result value by comparing the sensed value received through the receiver 61 with a pre-stored reference value, a command call unit 63 that calls a control command corresponding to the calculated result value, and the command It includes a command execution unit 64 that executes the control command called from the call unit 63 and simultaneously transmits the control command to be executed to the controller 90, which will be described later.

The receiving unit 61 is connected to the sensing unit 80 and receives the sensing value detected by the sensing unit 80, and stores the received sensing value, date, and time together in the form of a data table.

The calculation unit 62 calculates a result value by comparing the detection value detected through the receiver 61 with a previously stored reference value. Here, the reference value is a foreign matter specific to the size of the foreign matter depending on the degree and shape of exposure upward from the ground. It may be a specific value for a fixed or moving object, such as a specific value or an object-specific value that specifies the object according to the size and shape of the object and the moving speed. Additionally, the reference value may be a pre-entered optimal driving speed according to the temperature and humidity of the working environment.

This reference value is compared with the sensed value transmitted through the receiver 61 to check whether the sensed value is within, less than, or greater than the range of the reference value, and a result value is calculated.

The command call unit 63 calls a control command corresponding to the result value calculated by the calculation unit 62, where the control command is the drive motor ( 40), it is a control command that controls the operation of the alarm means 22 and the lifting unit 70.

The control command called from the command call unit 63 is transmitted to the command execution unit 64, the command execution unit 64 executes the transmitted control command, and the command execution unit 64 is operated by the administrator. The control command transmitted from the controller 90 is executed.

The driving control unit 60 configured as described above controls the driving direction and driving speed of the frame by controlling the operation of the driving caster, more precisely, the driving motor 40, through the sensing value detected through the sensing unit 80. Alternatively, the operation of the driving motor 40 is controlled through a control command transmitted from the manager's controller 90.

The elevating unit 70 is disposed on the frame 10 and detachably coupled to the ground clearance unit 50, and its operation is controlled by the travel control unit 60 to move the position of the ground clearance unit 50 in the up and down directions. Adjust.

This elevation unit 70 lowers the ground clearance unit 50 to contact the ground during the process of leveling the ground, and when the flattening operation is not in progress, the ground clearance unit 50 is lowered to improve the mobility of the frame. Raise it so that it does not touch the ground.

The lifting unit 70 for this includes a lifting driving means 71 that receives power from the battery (B) and operates by receiving a signal from the traveling control unit 60, and the lifting driving means 71 and the ground It includes a lifting frame 72 connecting the organizing unit 50.

The lifting and lowering driving means 71 operates through power applied from a battery and control commands transmitted from the travel control unit 60 or the controller 90, and may be comprised of either a motor or a cylinder.

The lifting frame 72 connects the lifting driving means 71 and the ground clearing unit 50, and is disposed at the lower part of the frame 10, and has a floor surface 722 on which the ground clearing unit 50 is placed. And, a basket 721 including a lifting bar 723 protruding upward from the edge of the floor surface 722, and a rail 724 on which the lifting bar 723 of the basket 721 is movably arranged, and , and a power transmission body 725 connecting the lifting bar 723 and the lifting driving means 71.

The basket 721 is formed by interconnecting a plurality of bars, and includes a bottom surface 722 on which the ground clearance unit 50 is placed and an elevating bar protruding upward from the edge of the bottom surface 722 ( 723).

Here, the bottom surface 722 is penetrated in the center up and down so that the introduced ground clearance unit 50 can contact the ground, and at this time, the bottom surface 722 has a front end opened to form a flat portion of the ground clearance unit 50 ( 51) can be partially inserted into the ground.

The lifting bar 723 extends vertically upward from the upper surface of the floor surface 722 and goes up and down along a rail 724, which will be described later. It is preferable that a plurality of these lifting bars 723 are arranged at positions spaced apart from each other on the edge of the floor surface 722 to improve the stability of the lifting operation. In addition, on one side of the lifting bar 723, a plurality of rolling bearings (not shown in the drawing) will be placed at mutual intervals to improve movement stability by reducing frictional resistance when moving while inserted into the rail 724, which will be described later. You can.

The rail 724 is disposed on the body 20, extends in the vertical direction, and is arranged in a position and number corresponding to the position and number of the lifting bars 723.

The rail 724 is formed in a 'ㄷ' shape with one side open and the lifting bar 723 is movably inserted. The shape of the rail 724 is an example and can of course be changed.

The power transmitter 725 connects the lifting driving means 71 and the lifting bar 723 to transmit the driving force of the lifting driving means 71 to the lifting bar 723. It changes depending on the lifting driving means (71). For example, when the lifting drive means 71 is made of a motor, the power transmission body 725 is made of a wire or chain that rotates by the rotational force of the motor, and a coupler to which the wire is coupled is disposed on the lifting bar 723. A corresponding gear with which the chain engages may be arranged.

The lifting unit 70 configured as described above raises the ground leveling unit 50 from the ground or lowers it to contact the ground, thereby increasing the efficiency of the leveling operation and improving the convenience of movement.

The sensing unit 80 includes a sensor 81 disposed on the body 20 to detect obstacles in front, sides, and below the body 20, and a GPS (GPS) that checks location information of the body 20. 82).

The sensor 81 is for detecting the movement of an object or the presence of foreign substances, and includes an ultrasonic sensor that detects movement and recognizes abnormal obstacles, a frame or the ground clearance unit ( 50), a gyroscope for adjusting the air bucket 11 by calculating the tilt, optically scanning the state of the ground, and transmitting the results of measuring the intensity of reflected or transmitted light to the receiver 61. It may be composed of one or more of a laser scanner and an inductance sensor (LDC) that detects the surrounding ground condition and transmits the measurement results of detecting abnormal conditions according to material composition, operation, and location target to the receiver 61.

This sensing unit 80 detects the front and sides of the body 20 as well as the ground being flattened using the various sensors described above, and transmits the detection values of foreign substances and moving objects to the driving control unit 60 to control the driving motor. By controlling the operation of (40), accidents due to collision can be prevented in advance, and work speed can be increased and work efficiency can be maximized by promptly notifying the manager if separate action is required, such as foreign substances of a size that cannot be handled. You can.

The controller 90 is connected to the travel control unit 60 to enable wireless communication so that the manager controls the operation of the travel control unit 60 from a distance, and the controller 90 and the travel control unit 60 communicate with each other. It is configured to enable two-way communication capable of transmitting and receiving, enabling real-time response and prompt follow-up measures regarding driving conditions and emergency situations.

This controller 90 may be configured in the form of an application on a portable terminal called a smartphone or in the form of separate hardware, and since its structure and operational relationship are known, detailed illustration and description will be omitted.

As described above, the present invention has been described with specific details such as specific components and limited embodiments and drawings, but this is only provided to facilitate a more general understanding of the present invention, and the present invention is not limited to the above embodiments. , those skilled in the art can make various modifications and variations from this description.

Accordingly, the spirit of the present invention should not be limited to the described embodiments, and the scope of the patent claims described later as well as all things that are equivalent or equivalent to the scope of this patent claim shall fall within the scope of the spirit of the present invention. .

1: Unmanned electric kit for sports ground management
10: frame
11: air bucket 12: air pump
20: body
21: Display 22: Alarm means
30: Driving caster
40: driving motor
50: Ground organizing unit
51: Flat part 52: Collection part
53: roller
60: Driving control unit
61: receiving unit 62: calculating unit
63: Command call unit 64: Command execution unit
70: Elevating section
71: Elevating driving means 72: Elevating frame
721: Basket 722: Bottom surface
723: Elevating bar 724: Rail
725: Power transmission system
80: sensing unit
81: Sensor 82: GPS
90: controller

Claims (3)

A frame 10, a body 20 covering the frame 10, a driving caster 30 and a battery B disposed on the frame 10, and the battery B operate while receiving electricity from the battery B. An unmanned electric cart including a drive motor (40) that drives a traveling caster (30),
A flat part 51 that is detachably coupled to the frame 10 to scrape off protrusions on the ground, a collection part 52 that separates and collects foreign substances contained in the soil, and a roller 53 that compacts the ground. including a ground clearance unit (50);
A travel control unit 60 that controls the operation of the drive motor 40 according to the detection value detected through the sensing unit 80;
An elevating unit 70 disposed on the frame 10, coupled to the ground clearing unit 50, and operating by applied power and signals to raise or lower the ground clearing unit 50;
A sensing unit ( 80); and
An unmanned electric kit for sports ground management including a controller (90) that is wirelessly connected to the driving control unit (60) and controls the operation of the driving control unit (60) from a distance. The method of claim 1, wherein the lifting unit 70,
Lifting and lowering drive means (71) that receive power from the battery (B) and operate by receiving signals from the travel control unit (60),
An unmanned electric cart for sports ground management, characterized in that it includes a lifting frame (72) connecting the lifting driving means (71) and the ground clearance unit (50). The method of claim 2, wherein the lifting frame 72 is,
A basket 721 disposed at the lower part of the frame 10 and including a bottom surface 722 on which the ground clearance unit 50 is placed, and an elevating bar 723 protruding upward from the edge of the bottom surface 722. class,
A rail 724 on which the lifting bar 723 of the basket 721 is movably placed,
An unmanned electric cart for sports ground management, characterized in that it includes a power transmission body (725) connecting the lifting bar (723) and the lifting driving means (71).

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