KR20240065577A - Electric tow truck for ground cleaning - Google Patents

Abstract

The present invention relates to an electric towing vehicle for sports equipment, comprising: a car body forming an outer surface; a drive wheel disposed at the bottom of the vehicle body to be moved on the ground; and a connector fixed to the vehicle body to which the playground equipment is connected, wherein the playground equipment is detachably connected to the connector, thereby reducing replacement time and preventing safety accidents in the process of clearing the playground with a stable travel system. It's about an electric tow truck that can be used as a playground equipment.

Description

Playground equipment electric tow truck {ELECTRIC TOW TRUCK FOR GROUND CLEANING}

The present invention relates to an electric tow vehicle for playground equipment, and more specifically, to an electric tow vehicle for playground equipment equipped with functions for towing playground maintenance equipment.

Playgrounds where ball sports activities take place generally have a floor made of sand or dirt. Playgrounds made of sand or dirt must be maintained frequently because the surface becomes uneven or has stones due to various factors.

This kind of management first involves scrubbing the road surface several times using a brush to even out the road surface or remove foreign substances such as stones. Then, the road surface is firmly compacted using roller equipment with a large load. At this time, a lot of time and manpower had to be used to clean the floor using a brush. However, despite this investment of time and manpower, the floor is often not evenly cleaned, and foreign substances such as stones are often still left on the road surface. These foreign substances have become a factor that can cause injuries to participants during sports activities.

Accordingly, Korean Patent Publication No. 10-1526519 and Korean Patent Publication No. 10-1863278 disclose playground maintenance equipment that can simultaneously perform sand crushing, foreign matter removal, and roller work without separate equipment or work. In addition, Korean Patent Publication No. 10-2380742 discloses a Masato playground maintenance method using the above playground maintenance equipment. And, as shown in FIG. 1, the playground maintenance equipment is being towed using existing vehicles such as four-wheeled motorcycles.

When using an existing vehicle as above, there was a problem that a lot of time was consumed in the process of installing and dismantling the playground maintenance equipment on the vehicle, and the work that could be performed was limited to the operation of the existing vehicle. In addition, additional costs have increased as existing vehicles must be washed or maintained after use, and there is a limitation in that it is difficult to separately protect against safety accidents for pedestrians walking in the playground.

KR 10-1526519 B1 (2015.06.05. Announcement) KR 10-1863278 B1 (2018.05.30. Announcement) KR 10-2380742 B1 (2022.03.31. Announcement)

The present invention was made to solve the problems of the prior art. The present invention relates to an electric playground equipment towing vehicle equipped with a stable driving system and various functions to efficiently tow the playground equipment.

In order to achieve the above-described object, the present invention provides an electric towing vehicle for sports equipment, comprising: a car body forming an outer surface; a drive wheel disposed at the bottom of the vehicle body to be moved on the ground; and a connector fixed to the vehicle body to which the playground equipment is connected, and the playground equipment may be detachably connected to the connector.

In addition, the electric playground equipment towing vehicle according to the present invention includes a steering device for controlling the driving direction; and a battery supplying power; wherein the driving wheel includes a front wheel including a pair of front wheels connected to the same axis, and a rear wheel including a pair of rear wheels connected to the same axis. It is formed with four wheels, and the steering device may be connected to the front wheel.

In addition, the electric playground equipment towing vehicle according to the present invention includes a drive motor that transmits power to the rear wheels; and a servomotor that transmits power to the steering device connected to the front wheel. The driving motor or the servomotor may receive power from the battery.

In addition, the steering device includes a rotating member, one end of which is connected to the servomotor and the other end of which rotates in the left and right directions based on one end by the power of the servomotor; and a link member connecting the other end of the rotating member and the pair of front wheels. The steering direction may be adjusted depending on the rotation direction of the rotating member.

In addition, the electric towing vehicle for the playground equipment according to the present invention includes a load sensor disposed in the connector to measure the load applied from the playground equipment; An angular velocity sensor that measures the angular velocity of the driving motor; and a control module for controlling the angular speed of the drive motor, wherein the control module includes set values for a reference load and a reference speed for data measured by the load sensor and the angular velocity sensor, respectively, and the reference load And when the reference speed is exceeded, the angular speed of the drive motor can be controlled to a low speed so that the torque is increased.

In addition, the electric playground equipment towing vehicle according to the present invention may further include a communication module that is connected to the control module and performs wireless network communication with the user terminal.

Additionally, the battery may be disposed lower than the coupling position between the connector and the playground equipment.

In addition, the electric playground equipment towing vehicle according to the present invention may be formed so that the center of gravity (C.G.) of the vehicle body and the battery is located lower than the tops of the front and rear wheels.

The vehicle body includes a front portion forming a front surface; a pair of side parts spaced apart from each other in the left and right directions so that the front and rear wheels of the drive wheel are disposed; a pair of joints connecting the front portion and a pair of side portions; and an upper surface portion forming the upper surface, wherein the front portion, the pair of side portions, and the upper ends of the pair of joint portions may all be connected to one of the upper surface portions.

In addition, the front portion is inclined so that the upper end is disposed rearward than the lower end, and of the pair of side portions, the side portion disposed on the left is inclined so that the upper end is disposed to the right of the bottom, and the side portion disposed on the right , it can be tilted so that the top is placed to the left of the bottom.

The electric playground equipment towing vehicle according to the present invention with the above-described configuration is implemented as an integrated product capable of remote operation by applying electric power while increasing compatibility with existing playground equipment, thereby reducing wasted manpower and replacement time. It has the advantage of maximizing efficiency by being able to perform more diverse functions.

In addition, the electric playground equipment towing vehicle according to the present invention has the advantage of enabling more stable operation on unpaved playgrounds by implementing a stable driving system, and has the effect of preventing safety accidents such as pedestrian collisions during the playground clearing process. .

Figure 1 is a diagram showing a playground equipment connected to an existing vehicle according to the prior art.
Figure 2 is a perspective view of an electric towing vehicle for a playground equipment connected to a playground equipment according to the present invention.
Figure 3 is a front view of an electric towing vehicle for a playground equipment connected to a playground equipment according to the present invention.
Figure 4 is a plan view showing the interior of the electric playground equipment tow truck according to the present invention.
Figure 5 is a front view of an electric playground equipment tow vehicle according to the present invention.
Figure 6 is a configuration diagram of an electric playground equipment towing vehicle according to the present invention.
Figure 7 is a perspective view of an electric playground equipment towing vehicle according to the present invention.
Figure 8 is a front view showing the body of an electric playground equipment tow vehicle according to the present invention.

Hereinafter, an electric playground equipment towing vehicle according to the present invention will be described in detail with reference to the attached drawings. The drawings introduced below are provided as examples so that the idea of the present invention can be sufficiently conveyed to those skilled in the art. Accordingly, the present invention is not limited to the drawings presented below and may be embodied in other forms. Additionally, like reference numerals refer to like elements throughout the specification.

If there is no other definition in the technical and scientific terms used here, they have meanings commonly understood by those skilled in the art to which this invention pertains, and the gist of the present invention is not required in the following description and attached drawings. Descriptions of well-known functions and configurations that may be confusing are omitted.

Figures 2 and 3 relate to an electric tow vehicle for playground equipment according to the present invention, Figure 2 is a perspective view of an electric tow vehicle for playground equipment connected to a playground equipment, and Figure 3 is a front view of an electric tow vehicle for playground equipment connected to a playground equipment. Each is indicated.

Referring to Figures 2 and 3, the electric playground equipment towing vehicle 10 according to the present invention includes a car body 100 forming the outer surface of the vehicle, and a drive wheel disposed at the lower part of the car body 100 to be moved on the ground. It may include (200) and a connector (300) fixed to the vehicle body (100) to which the playground equipment (20) is connected. At this time, the playground equipment 20 has a work body 21 that performs sand crushing, foreign matter removal, or roller work, and one end is connected to the work body 21 and the other end is detachably connected to the connector 300. It may include a connection frame (22). And as the connector 300 is disposed at the rear of the vehicle body 100, the electric playground equipment towing vehicle 10 can tow the playground equipment 20 from the front. The connector 300 may be in the form of a ring penetrating in the left and right directions so that the connecting frame 22 can be rotated in the up and down and left and right directions, and the end of the connecting frame 22 is a ring penetrating in the up and down directions. It could be my brother. Through rotation in the up and down and left and right directions, the electric towing vehicle 10 for the playground equipment can prevent shock damage due to vertical movement and rotation in the process of towing the playground equipment 20, thereby improving durability. This can lead to advantages.

Figures 4 to 6 relate to an electric tow truck for playground equipment according to the present invention, Figure 4 is a plan view showing the interior of the electric tow car for playground equipment, Figure 5 is a front view of the electric tow car for playground equipment, and Figure 6 is a front view of the electric tow car for playground equipment. The configuration diagram of the electric tow truck for sports equipment is shown.

Referring to FIG. 4, the electric playground equipment towing vehicle 10 according to the present invention may further include a steering device 400, a battery 500, and a control module 600. At this time, the steering device 400 is a device that controls the driving direction of the vehicle and may be connected to the drive wheel 200. Here, the drive wheel 200 may be composed of four wheels and include a front wheel 210 including a pair of front wheels 211 and a rear wheel 220 including a pair of rear wheels 221. there is. And the pair of front wheels 211 are connected to each other through the front axle 212 extending left and right and can rotate together, and the pair of rear wheels 221 are connected to each other through the rear axle 222 extending left and right. They are connected to each other and can rotate together. At this time, the pair of front wheels 211 may be spaced apart from each other left and right, and the pair of rear wheels 221 may also be spaced apart from each other left and right. The steering device 400 may be connected to either the front wheel 210 or the rear wheel 220, and in this embodiment, it is steered from the front wheel 210 and the rear wheel 220 is driven. Let me explain by example.

The playground equipment electric towing vehicle 10 according to the present invention may include a drive motor 510 and a servomotor 520 that receive power from the battery 500 and generate power. Here, the driving motor 510 and the servomotor 520 may be supplied with power from one battery 500, or each may include a battery 500. Additionally, the drive motor 510 may be connected to the rear wheel 220 to generate driving force, and the drive motor 510 may be formed of a DC motor or the like. In addition, the servomotor 520 can rotate the steering device 400 and can rotate left and right based on the up and down axis.

The steering device 400 may include a rotating member 410 and a link member 420. One end of the rotating member 410 may be connected to the servomotor 520, and the link member 420 may be connected to the other end of the rotating member 410. And the link member 420 is a first link member 421 connecting one front wheel 211 and the rotating member 410, and the other front wheel 211 and the rotating member 410. It may include a second link member 422 connecting the two. At this time, the first link member 421 and the second link member 422 may each be formed of two or more links. In addition, one end of the first link member 421 and the second link member 422 is hinged with the rotating member 410, and the other end of the first link member 421 is connected to one of the front wheels 211. and the other end of the second link member 422 may be hinged to the other front wheel 211. Accordingly, when the rotating member 410 rotates (R) in one direction of left (clockwise in the drawing) or right (counterclockwise in the drawing), the pair of front wheels 211 can be rotated together. Here, the steering device 400 can be controlled through a signal generated from the control module 600.

Referring to FIG. 5, the battery 500 may be placed below the coupling height between the connector 300 and the end of the connection frame 22 of the playground equipment 20. That is, the ring penetrating in the left and right directions of the connector 300 and the ring penetrating in the vertical direction disposed at the end of the connection frame 22 may be located at a predetermined height relative to the ground, which is the connector ( 300) may correspond to the location installed on the vehicle body. Additionally, the battery 500 may be placed at a lower position and fixed to the vehicle body 100 closer to the ground than the connector 300. Accordingly, the electric playground equipment towing vehicle (10) of the present invention can maintain its posture even when a large load is generated due to the playground equipment (20) being caught by an obstacle, etc. during the process of managing the playground, enabling more stable operation. In addition, the center of gravity (CG) point of the vehicle body 100 and the battery 500 may be placed lower than the top of the front wheels 211 and rear wheels 221. At this time, when the diameters of the front wheels 211 and the rear wheels 221 are different, the center of gravity may be formed at a lower position than the upper end of the wheel with a smaller diameter among the front wheels 211 and the rear wheels 221. Additionally, as shown, the battery 500 may be disposed between the front wheels 211 and the rear wheels 221 in the front-to-back direction.

Referring to Figure 6, the playground equipment electric towing vehicle 10 according to the present invention includes a load sensor 710 disposed on the connector 300 to measure the load applied from the playground equipment 20 and the drive motor. It may include an angular velocity sensor 720 that measures the angular velocity of 510. And the load sensor 710 and the angular velocity sensor 720 can transmit measured information to the control module 600. At this time, the control module 600 can preset the reference load and reference speed, determine whether excessive load has been applied to the connector 300, and calculate the current speed of the vehicle. Here, the control module 600 includes set values for the reference load and reference speed with respect to the data measured by the load sensor 710 and the angular velocity sensor 720, but both the reference load and the reference speed exceed. In this case, the angular speed of the drive motor 510 can be controlled to a low speed to increase the torque. That is, the drive motor 510 can increase torque by reducing the angular speed at the same output, and can be automatically controlled to normalize when idling occurs in the drive wheel 200.

The playground equipment electric towing vehicle 10 according to the present invention may further include an external measurement sensor 730, such as a camera or lidar. At this time, the external measurement sensor 730 may be installed toward the front, or may be configured to measure both the side and rear directions. Here, the control module 600 can receive measured information in conjunction with the external measurement sensor 730, and can also control the drive motor 510 and the servo motor 520 based on the input information. . For example, when a front obstacle is detected through the external measurement sensor 730, the control module 600 can stop the drive motor 510 to brake or change the driving direction through control of the servo motor 520. there is.

The electric playground equipment towing vehicle 10 according to the present invention may further include a communication module 800 that communicates with the user terminal 30 and the like through a wireless network. At this time, the communication module 800 is connected to the control module 600 and can transmit and receive data. And when a control signal is received from the user terminal 30 authorized by the communication module 800, the control module 600 can control the driving motor 510 and the servo motor 520 based on this. Alternatively, the control module 600 may transmit information measured by the load sensor 710, the angular velocity sensor 720, and the external measurement sensor 730 to the user terminal 30 through the communication module 800. At this time, examples of the networks include 3rd Generation Partnership Project (3GPP) network, Long Term Evolution (LTE) network, World Interoperability for Microwave Access (WIMAX) network, Internet, Local Area Network (LAN), and Wireless Local Area (Wireless LAN). Network), WAN (Wide Area Network), PAN (Personal Area Network), Bluetooth network, satellite broadcasting network, analog broadcasting network, DMB (Digital Multimedia Broadcasting) network, etc., but are not limited thereto. In addition, the user terminal 30 may be implemented as a fixed terminal such as a desktop PC, laptop computer, ultrabook, etc., or may be implemented as a server equipped with a display, and may be implemented as a digital broadcasting terminal, It may be implemented in various types of mobile terminals such as mobile phones, personal digital assistants (PDAs), portable multimedia players (PMPs), navigation, tablet PCs, and wearable devices.

Figures 7 and 8 relate to an electric tow vehicle for playground equipment according to the present invention. Figure 7 shows a perspective view of the electric tow vehicle for playground equipment, and Figure 8 shows a front view showing the body of the electric tow vehicle for playground equipment, respectively.

Referring to Figures 7 and 8, the car body 100 is oriented left and right so that the front part 110 forming the front surface, the front wheels 211 and the rear wheels 221 of the drive wheel 200 are arranged. a pair of side parts 120 spaced apart from each other, a pair of joint parts 130 connecting the front part 110 and the pair of side parts 120, and an upper surface part 140 forming the upper surface. It can be included. And the car body 100 may be formed so that the front part 110, the pair of side parts 120, and the tops of the pair of joint parts 130 are all connected to one upper surface part 140. . That is, the edges of the upper surface portion 140 may be formed to share the upper edges of the front portion 110, the pair of side portions 120, and the pair of joint portions 130. In addition, the electric playground equipment towing vehicle 10 according to the present invention may have a lightweight structure on the upper side of the vehicle body 100 so that the center of gravity is located lower than the top of the wheels, as described above, and it is possible to achieve this by using a lighter structure. The detailed configuration is as follows.

The front portion 110 may include a first front portion 111 and a second front portion 112 connected between the top of the first front portion 111 and the upper surface portion 140. At this time, the first front portion 111 may have a surface extending in the vertical and left and right directions. Additionally, the second front portion 112 may be formed so that the top of the second front portion 112 is inclined toward the rear rather than the bottom. In addition, the second front part 112 may also extend in the left and right directions in the same way as the first front part 111.

Among the pair of side parts 120, the side part 120 disposed on the left is inclined so that its top is disposed to the right of the bottom, and the side portion 120 disposed on the right has its top disposed to the left of the bottom. It can be tilted as much as possible. At this time, the side portion 120 may include a first side portion 121 extending in the vertical direction and a second side portion 122 connected between the top of the first side portion 121 and the upper surface portion 130. . Additionally, the second side portion 122 may be formed to be inclined as described above. Accordingly, the gap between the upper ends of the pair of side parts 120 may be narrower than the gap between the lower ends. In addition, other sides of the first side portion 121 and the second side portion 122 may extend in the front-back direction.

Among the pair of joint portions 130, the joint portion 130 disposed on the left may be inclined so that the edge contacting the front portion 110 is disposed to the right of the edge contacting the side portion 120, The joint 130 disposed on the right side may be inclined so that the edge in contact with the front part 110 is disposed to the left of the edge in contact with the joint 130. That is, the gap between the pair of joints 130 may be formed to narrow toward the front. In addition, the pair of joints 130 includes a first joint 131 extending in the vertical direction and a second joint connected between the upper end of the first joint 131 and the upper surface 140. It may include (132). Additionally, the second joint 132 may be formed so that the upper end of the second joint 132 is inclined more toward the rear than the lower end.

The top of the first front part 111, the first side part 121, and the first joint 131 is disposed lower than the top of the front wheel 211 or the rear wheel 221 of the drive wheel 200. You can.

The second side portion 122 may be configured to have a vertical height that narrows toward the front due to the second joint portion 132. In more detail, the second side portion 122 includes a flat surface 122a formed at the same height along the front-to-back direction, and an expanded surface 122b that extends to the front of the flat surface 122a and becomes smaller in height toward the front. can do. In addition, the second side portion 122 may further include a reduced surface 122c that extends toward the rear of the flat surface 122a and whose height decreases toward the rear so that the center of gravity can be directed forward.

The vehicle body 100 may have a storage portion 150 that opens upward and rearward and is recessed at the rear. That is, the receiving portion 150 may be formed on the rear side of the upper surface portion 140 of the vehicle body 100, and the hollow receiving portion 150 may be open to the upper and rear sides. Additionally, a plurality of extension grooves 151 may be formed on the bottom of the receiving portion 150. At this time, the extension groove 151 extends in the front and rear directions, and a plurality of the extension grooves 151 may be arranged to be spaced apart from each other in the left and right directions.

The joint 130 may include a lower reinforcement portion 133 that extends below the first joint 131 and has a lower end inclined toward the rear than the upper end. And the lower end of the lower reinforcement part 133 may be disposed above the lower end of the front wheel 211 or the rear wheel 221 of the driving wheel 200. In addition, the front portion 110 and the side portion 120 may also include a reinforcement portion extending to the bottom of the first front portion 111 and the first side portion 121.

As described above, the present invention has been described with reference to specific details such as specific components and limited embodiment 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-mentioned embodiment. No, 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 all matters that are equivalent or equivalent to the claims of this patent as well as the claims described later shall fall within the scope of the spirit of the present invention. will be.

10: Electric towing vehicle for playground equipment
20: Sports equipment
21: body of work
22: connection frame
30: User terminal
100: car body
110: front part
111: first front part
112: 2nd front part
120: side part
121: first side portion
122: second side portion
122a: flat surface
122b: expansion surface
122c: reduced surface
130: joint
131: first joint
132: second joint
133: Bottom reinforcement part
140: upper surface
150: storage unit
151: Extension groove
200: driving wheel
210: front wheel
211: front wheel
212: front axis
220: rear wheel
221: rear wheel
222: rear axle
300: Connector
400: Steering device
410: Rotating member
420: Link member
421: First link member
422: Second link member
500: Battery
510: Drive motor
520: Servo motor
600: Control module
710: Load sensor
720: Angular velocity sensor
730: External measurement sensor

Claims (10)

In the sports equipment electric towing vehicle that tows the sports equipment,
a car body forming the exterior;
a drive wheel disposed at the bottom of the vehicle body to be moved on the ground; and
A connector fixed to the vehicle body and connected to the sports equipment;
Including,
An electric towing vehicle for playground equipment, characterized in that the playground equipment is detachably connected to the connector.
According to paragraph 1,
A steering device that controls the driving direction; and
Batteries that provide power;
It further includes,
The driving wheel is,
It is formed of four wheels, including a front wheel including a pair of front wheels connected to the same axis, and a rear wheel including a pair of rear wheels connected to the same axis,
An electric tow vehicle for sports equipment, characterized in that the steering device is connected to the front wheels.
According to paragraph 2,
A drive motor that transmits power to the rear wheels; and
A servo motor that transmits power to the steering device connected to the front wheel;
It further includes,
An electric towing vehicle for playground equipment, wherein the drive motor or the servomotor receives power from the battery.
According to paragraph 3,
The steering device is,
a rotating member whose one end is connected to the servomotor and whose other end rotates in the left and right directions based on one end by the power of the servomotor;
a link member connecting the other end of the rotating member and the pair of front wheels;
It further includes,
An electric tow vehicle for sports equipment, characterized in that the steering direction is adjusted according to the rotation direction of the rotating member.
According to paragraph 3,
A load sensor disposed on the connector to measure the load applied from the exercise equipment;
An angular velocity sensor that measures the angular velocity of the driving motor; and
A control module that adjusts the angular speed of the drive motor;
Including,
The control module is,
The data measured from the load sensor and the angular velocity sensor contain set values for the standard load and standard speed, respectively, and control the angular speed of the drive motor at a low speed so that the torque increases when both the standard load and the standard speed are exceeded. An electric tow truck for sports equipment, characterized in that:
According to clause 5,
A communication module connected to the control module and communicating with a user terminal over a wireless network;
An electric tow vehicle for sports equipment, further comprising:
According to paragraph 2,
The battery is,
An electric towing vehicle for a playground equipment, characterized in that it is disposed lower than the coupling position between the connector and the playground equipment.
In clause 7,
An electric tow vehicle for playground equipment, characterized in that the center of gravity (CG) of the vehicle body and the battery is located lower than the tops of the front and rear wheels.
According to clause 8,
The car body is,
A front portion forming the front surface;
a pair of side parts spaced apart from each other in the left and right directions so that the front and rear wheels of the drive wheel are disposed;
a pair of joints connecting the front portion and a pair of side portions; and
an upper surface portion forming the upper surface;
Including,
An electric towing vehicle for sports equipment, characterized in that the front part, the pair of side parts, and the top of the pair of joints are all connected to the upper surface part.
According to clause 9,
The front part is inclined so that the upper end is disposed rearward than the lower end,
Of the pair of side parts,
The side portion disposed on the left is inclined so that the top is disposed to the right of the bottom,
The side portion disposed on the right side is inclined so that the upper end is disposed to the left of the lower end.