KR101937596B1 - Driving system for trailer - Google Patents

Abstract

The present invention relates to a driving system for a trailer. According to the present invention, the driving system for a trailer comprises: a trailer (10) connected to the rear of a tow vehicle (1) driven by a driver to be towed; an autonomous driving unit (20) mounted in the trailer (10) to enable the trailer (10) to be autonomously driven; a tow unit (30) connecting the tow vehicle (1) and trailer (10) to be separated from each other; a sensor unit (40) mounted in the tow vehicle (1) to collect driving information required for autonomous driving; and a communication unit (50) transmitting the collected driving information to the autonomous driving unit (20).

Description

[0001] DRIVING SYSTEM FOR TRAILER [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a trailer driving system, and more particularly, to a trailer driving system in which a trailer towed by a towing vehicle is equipped with an autonomous running function and is paired with a towing vehicle and autonomously travels with reference to the collected driving information .

As a transportation means for transporting a large-capacity cargo, a trailer is used. The trailer does not have its own power and therefore moves in a manner that is pulled by the tractor, as disclosed in the following prior art documents. Here, the tractor and the trailer are connected to each other by a method of inserting a king pin into a coupler of a tractor.

Since the cargo loaded on the trailer is generally large and has a large weight, the trailer itself is designed to be large and long, and can be classified into a flat type, a van type, and a bus type depending on its structure.

This trailer is connected to the rear of the truck and is towed and has a large and long body, making it difficult to control the trailer's movement during truck driving. Therefore, there is a problem that the trailer can not be operated unless it is an experienced driver. In particular, since the angle of refraction between the tractor and the trailer is limited and the turning radius is reduced, it is difficult to operate on a road with a narrow width and a large number of refractions. In addition, the trailer coupling structure by the king pin and the coupler is limited in the upward and downward refraction, and there is a possibility that the connection structure of the trailer connection structure is broken during operation in an uphill where the inclination is severe.

Accordingly, there is a desperate need for a solution to the problem of the conventional trailer.

KR 10-2008-0044305 A

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems of the prior art, and an object of the present invention is to provide a trailer which is trailed by a traction vehicle, is paired with a traction vehicle, System.

A trailer driving system according to the present invention comprises: a trailer which is connected to and pulled to the rear of a towing vehicle operated by a driver; An autonomous drive unit mounted on the trailer to autonomously drive the trailer; A traction unit detachably connecting the towing vehicle and the trailer to each other; A sensor unit mounted on the towing vehicle and collecting driving information necessary for autonomous driving; And a communication unit for transmitting the collected driving information to the autonomous drive unit.

Further, in the trailer driving system according to the present invention, the autonomous driving unit may include a driving unit for driving the wheels of the trailer; A steering unit for steering the trailer; And an autonomic drive control unit for receiving the collected driving information and controlling the driving unit and the steering unit.

 Further, in the trailer driving system according to the present invention, the driving unit may include an electric motor for rotating the wheels of the trailer; And a battery for supplying electricity to the electric motor.

Further, in the trailer driving system according to the present invention, the driving unit may include an electric motor for rotating the wheels of the trailer; And a generator mounted on the trailer, for supplying electricity to the electric motor.

Further, in the trailer driving system according to the present invention, the driving unit individually transmits power to the left and right wheels, and the steering unit controls the rotational speeds of the left and right wheels respectively, And the trailer is driven in a direction in which the wheel with a low speed is disposed.

Further, in the trailer driving system according to the present invention, the trailer is self-driven by mounting a plurality of trailers each having the autonomous travel portion.

Further, in the trailer traveling system according to the present invention, the autonomous travel section controls the trailer to be arranged at the rear center of the towing vehicle when the towing vehicle goes straight, and when the towing vehicle starts to turn to the right, Controls the trailer to be arranged on the rear left side of the towing vehicle when the right turn of the towing vehicle is finished and the trailer starts to turn to the right, The trailer is arranged on the rear left side of the towing vehicle.

Further, in the trailer running system according to the present invention, the autonomous running section controls the towing section to separate the towing vehicle and the trailer from each other when the towing vehicle rotates.

Further, in the trailer driving system according to the present invention, the traction unit includes an electromagnet; And a traction control unit that supplies or cuts off current to the electromagnets.

Further, in the trailer driving system according to the present invention, the tow portion includes a link portion formed by hinging a plurality of links to each other, and is bent when the towing vehicle rotates.

Further, in the trailer traveling system according to the present invention, the pulling portion may include an engaging groove member recessed in an outer surface thereof and having a sliding groove curved from one end to the other end; And a coupling protrusion member having protrusions inserted into the sliding groove to be slidable.

Further, in the trailer traveling system according to the present invention, the towing portion includes a plurality of connecting members into which one of the towing portions is inserted, the length of which is extended when the towing vehicle rotates, The length is contracted.

The trailer driving system further includes a rear sensor unit mounted on the trailer and collecting road information on the rear side and transmitting the road information to the driver of the tow vehicle through the communication unit do.

The features and advantages of the present invention will become more apparent from the following detailed description based on the accompanying drawings.

Prior to that, terms and words used in the present specification and claims should not be construed in a conventional and dictionary sense, and the inventor may properly define the concept of the term in order to best explain its invention It should be construed as meaning and concept consistent with the technical idea of the present invention.

According to the present invention, since the traction vehicle and the trailer are detachably connected to each other at the traction portion, the trailer can autonomously run based on the travel information collected from the traction vehicle, so that the driver can connect the vehicle, As a result, the trailer can be easily traversed on a road with a narrow width, an uphill road, or the like.

1 is a schematic view illustrating a trailer driving system according to an embodiment of the present invention.
2 to 4 are block diagrams of the autonomous drive unit shown in Fig.
5 is a plan view showing a trailer driven by a trailer driving system according to the present invention.
6 is a schematic view illustrating a trailer driving system according to another embodiment of the present invention.
7 to 9 are plan views showing an embodiment of the pulling portion shown in Figs. 1 to 5. Fig.

BRIEF DESCRIPTION OF THE DRAWINGS The objectives, specific advantages and novel features of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG. It should be noted that, in the present specification, the reference numerals are added to the constituent elements of the drawings, and the same constituent elements are assigned the same number as much as possible even if they are displayed on different drawings. Also, the terms "first "," second ", and the like are used to distinguish one element from another element, and the element is not limited thereto. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the following description of the present invention, detailed description of related arts which may unnecessarily obscure the gist of the present invention will be omitted.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a schematic view of a trailer driving system according to an embodiment of the present invention, and FIGS. 2 to 4 are views showing the configuration of the autonomous drive unit shown in FIG. 1. FIG.

1 to 4, a trailer driving system according to the present invention includes a trailer 10, which is connected to and pulled behind a traction vehicle 1 driven by a driver, a trailer 10 mounted on a trailer 10, A traction unit 30 for detachably connecting the traction vehicle 1 and the trailer 10 to each other and a traction unit 30 mounted on the traction vehicle 1 for running on the self- A sensor unit 40 for collecting information, and a communication unit 50 for transmitting the collected driving information to the autonomous drive unit 20. [

The present invention relates to a trailer driving system in which a trailer towed by a towing vehicle is equipped with an autonomous running function and is paired with a towing vehicle and autonomously travels with reference to collected traveling information. The trailer is a vehicle for transporting cargo and the like, which is conventionally pulled and driven by a tractor without a separate driving device, and is made large and long for transporting a large amount of cargo. Conventionally, the conventional trailer is difficult to control unless it is an experienced driver. Since the trailer has a small turning radius and a small vertical angle of refraction, the trailer is limited in its operation in an uphill road with a narrow width and a large number of refractions. As a solution to the problem, Respectively.

Specifically, the trailer driving system according to the present invention includes a trailer 10, an autonomous drive unit 20, a traction unit 30, a sensor unit 40, and a communication unit 50.

The trailer 10 is a vehicle configured to carry cargo. In general, the trailer 10 is composed of a frame and wheels arranged on the left and right sides of the frame. The trailer 10 may be of a flat type, a vane type, or a bus type as long as it is capable of moving while being pulled by the towing vehicle 1. Further, The shape and structure are not particularly limited. Accordingly, as the population enjoying outdoor activities is increased, the trailer 10 can be implemented in the form of a camping trailer. Here, the camping trailer is generally driven by two wheels, one on each side, but the number of wheels is not limited to two.

On the other hand, the towing vehicle 1 is a transportation machine capable of traveling on the road, and there is no particular limitation as long as it is a vehicle that can be operated by a driver, equipped with an independent power device, a steering device, Therefore, it can be a tractor, a truck, a power cultivator, a manager, or the like, and it may be a general passenger car or a small lorry. Therefore, in constructing the cargo truck, the driver's car can be used as the towing vehicle 1 and the cargo space can be implemented as the trailer 10.

Here, the trailer 10 moves along the road on which the towing vehicle 1 travels while being pulled by the towing vehicle 1, but the movement is not necessarily controlled depending on the movement of the towing vehicle 1, As such, autonomous driving is possible. At this time, the autonomous drive unit 20 carries out autonomous drive.

The autonomous drive unit 20 is constituted by a device mounted on the trailer 10 and controlling the running of the trailer 10. According to this, since the trailer 10 is not operated by the driver and the trailer 10 is provided with the autonomous running function, the trailer 10 can move by itself. It should be noted that the trailer 10 is not necessarily driven separately from the towing vehicle 1 even if it is driven by the autonomous drive unit 20 and is normally driven by the traction and steering of the towing vehicle 1, Mode, the vehicle may be switched to an autonomous mode in consideration of various factors such as road conditions and the like.

Here, the autonomous drive unit 20 may include a drive unit 21, a steering unit 23, and an autonomous drive control unit 25. The driving unit 21 is a device for driving the wheels of the trailer 10 and generates a driving force independent of the towing vehicle 1 by applying a rotational force to the wheels. The steering portion 23 is a device for changing the traveling direction of the trailer 10, whereby the trailer 10 is steered. In order for the trailer 10 to maintain normal and stable running, the driving unit 21 and the steering unit 23 must operate in a complementary manner, and the autonomous-travel control unit 25 controls its operation. At this time, the travel information necessary for the autonomous travel is collected by the sensor unit 40, which will be described later, and is transmitted to the autonomous travel control unit 25, so that the autonomous travel control unit 25 generates a command necessary for autonomous travel Thereby controlling the driving unit 21 and the steering unit 23. In addition, the autonomous drive control unit 25 can utilize artificial intelligence, big data, and is operated in a manner such as navigation with the master vehicle 10 or the like, thereby preventing an accident that may occur during self-driving.

The power of the driving unit 21 for rotating the wheels of the trailer 10 can be obtained from various fuels such as light oil, gasoline, and natural gas. Electricity can also be used in consideration of exhaustion of fossil fuel and environmental problems. In driving the trailer 10 using electricity, the driving unit 21 may include an electric motor 21a and a battery 21b (see FIG. 3). Here, the electric motor 21a rotates the shaft to generate a rotational force, and the shaft is directly connected to the wheels of the trailer 10, or the rotational force can be applied to the wheels of the trailer 10 by combining the gear box and the rotational shaft have. The battery 21b supplies electricity to the electric motor 21a. On the other hand, the device for supplying electric power to the electric motor 21a is not necessarily limited to the battery 21b, but a separate generator 21c may be used (see Fig. 4). Here, the generator 21c can be mounted on the trailer 10, in which the trailer 10 on which the generator 21c is mounted is either the trailer 10 directly connected to the towing vehicle 1, or the trailer 10, Or other trailer 10 connected to the vehicle.

The tow portion 30 is a device configuration for connecting the traction vehicle 1 and the trailer 10 to each other. The towing portion 30 is not particularly limited as long as the trailer 10 is configured to be pulled to the towing vehicle 1 and is free from connection and disconnection. Therefore, it can be realized by using a conventional coupler and a king pin. It may also be of an electromagnetic type. That is, it is possible to connect and disconnect the traction vehicle 1 and the trailer 10 with magnetic force by using an electromagnet that is magnetized when an electric current flows and is restored to its original state that is not magnetized when the electric current is interrupted. At this time, a traction control section may be mounted to supply or cut off current. Therefore, the driver or the like can connect the traction vehicle 1 and the trailer 10, or disconnect the traction vehicle 1 by operating the traction control unit as necessary.

Here, the electromagnet may be disposed in any one of the traction vehicle 1 and the trailer 10, and the other may be a magnetic body magnetized in a magnetic field generated by the electromagnet to stick to the electromagnet. At this time, the electromagnet and the magnetic body may be formed in such a shape that the interfaces facing each other are curved convexly toward each other (see Fig. 5). When the traction vehicle 1 is rotated in this manner, the trailer 10 moves as the magnetic body slides in the left and right directions along the curved outer surface of the electromagnet and in the forward and backward directions approaching and departing from the electromagnet. However, the arrangement of the electromagnet and the magnetic body and the form thereof can be variously modified, and the scope of the right of the present invention is not limited by the above-described arrangement and form.

Further, the pulling portion 30 is not necessarily composed of an electromagnetic type, but can be implemented in various physical ways, and an embodiment thereof will be described later with reference to FIGS. 7 to 9. FIG.

On the other hand, the sensor unit 40 detects and collects the traveling information necessary for the autonomous traveling of the trailer 10. Accordingly, the sensor unit 40 may be implemented by a camera, a radar, a ridar, or the like. This sensor unit 40 is mounted on the towing vehicle 1 and collects the distance and near information of the road on which the towing vehicle 1 travels so that the collected information is transmitted to the trailer 10 ).

The communication unit 50 is configured to transmit the traveling information collected by the sensor unit 40 to the trailer 10. At this time, the communication unit 50 may be implemented by a transmitter that transmits travel information, a receiver that receives travel information transmitted from a transmitter, and a transmission / reception wireless antenna. Here, the transmitter may be disposed on the traction vehicle 1 and the receiver may be disposed on the trailer 10, respectively. However, the configuration of the communication unit 50 is not particularly limited as long as it can transmit the running information to the trailer 10, and therefore, it can be implemented as a wired communication device, and further, all known communication means can be used.

Based on the above description, according to the present invention, the trailer 10 driven by the towing vehicle 1 is equipped with an autonomous running function, and based on the road information on which the towing vehicle 1 travels, the trailer 10 The trailer 10 can be easily run on roads with narrow widths, curved roads, uphill roads, and the like. Since the traction unit 1 and the trailer 10 are connected and disconnected by the traction unit 30 so that a vehicle familiar to the driver can be used as the towing vehicle 1, the driver who is unfamiliar with the operation of the trailer 10 The trailer 10 can be pulled easily.

Meanwhile, the trailer driving system according to the present invention may further include a rear sensor unit 60. The rear sensor unit 60 is composed of a camera, a radar, a ridar, etc., and is attached to the trailer 10 to collect information on the rear road of the trailer 10. The collected rear road information is transmitted to the driver through the communication unit 50 described above, so that the driver can easily drive the towing vehicle 1 backward based on the information.

Hereinafter, the manner in which the trailer 10 is autonomously driven will be described in detail.

5 is a plan view showing a trailer driven by a trailer driving system according to the present invention.

First, the manner in which the trailer 10 is steered will be described. The steering unit 23 (see FIGS. 1 and 2) of the above-described autonomous drive unit 20 is configured to rotate the wheels of the trailer 10 It can be implemented to change the direction by rotating the wheel to the left or right with respect to the traveling direction, but it is also possible to steer by varying the rotation speed of the wheel.

In the case of steering according to the wheel rotation speed, the driving unit 21 (see Figs. 1 to 4) is implemented so as to transmit power separately to each of the left and right wheels. For example, when the electric motor 21a (see Fig. 3 or Fig. 4) is used as the driving portion 21, the electric motor 21a (see Fig. 3 or Fig. 4) Or a combination of a gear box and a rotary shaft or the like can transmit independent power for each wheel.

Here, the steering unit 23 (see Figs. 1 and 2) is formed so as to be able to control the rotational speed of each of the left and right wheels. 1 and 2) controls the relative rotation speed of the wheels so that the trailer 10 can be steered to the left and right sides of the trailer 10, .

In the trailer driving system according to the present invention, the trailer 10 can be driven by an autonomous running function in a curved road, in which it is controlled in such a way as to minimize the limitation by the turning radius. Here, the control of the trailer 10 is performed by the autonomous drive unit 20 described above.

5, when the traction vehicle 1 and the trailer 10 go straight in a line and then enter the curved road so that the traction vehicle 1 starts to turn to the right, the front center portion of the trailer 10 Can be controlled to be arranged on the rear right side of the towing vehicle 1. Here, the rear right side of the traction vehicle 1 is a right side of the trailer 10 when viewed toward the rear of the traction vehicle 1, that is, when viewed along the traveling direction, Direction.

On the other hand, when the right turn of the towing vehicle 1 is finished and the trailer 10 starts to turn to the right, the trailer 10 can be arranged on the rear left side of the towing vehicle 1. Therefore, at the time of the right turn, the rear right side of the traction vehicle 1 and the front right side of the trailer 10 can be prevented from colliding with each other, and the turning radius can be maximized.

By applying the same principle, the trailer 10 can be arranged on the rear left side of the towing vehicle 1 when the towing vehicle 1 starts to turn left when turning left. Further, when the left turn of the towing vehicle 1 is finished and the trailer 10 starts to turn to the right, the trailer 10 can be arranged on the rear right side of the towing vehicle 1. This can be applied in the case where the towing vehicle 1 is turned left in a state that the towing vehicle 1 and the trailer 10 are aligned in a line and the towing vehicle 1 and the trailer 10 The trailer 10 may be arranged on the rear right side of the towing vehicle 1 immediately when the towing vehicle 1 starts to turn left when the towing vehicle 1 is turned left without being arranged in a line have. Here, the rear left side of the traction vehicle 1 refers to a direction deflected to the left with respect to the center of the traction vehicle 1 when the rear side of the traction vehicle 1 is viewed from the trailer 10.

On the other hand, the trailer 10 can be arranged at the rear center portion of the towing vehicle 1 when the vehicle enters the straight traveling section after leaving the winding road.

The autonomous drive unit 20 may also separate the traction vehicle 1 and the trailer 10 by controlling the electromagnetic traction unit 30 when the traction vehicle 1 rotates. At this time, the trailer 10 is not influenced by the towing vehicle 1 but is driven to rotate by itself in accordance with the autonomous traveling function.

6 is a schematic view illustrating a trailer driving system according to another embodiment of the present invention.

6, the trailer driving system according to the present invention includes a plurality of trailers 10 connected to each other, an autonomous drive unit 20 and a communication unit 50 mounted on the trailer 10, have. Here, the plurality of trailers 10 are detachably connected to each other, and the connection can be made by the pulling portion 30 described above or by a connecting structure different from the pulling portion 30. In this case, each trailer 10 is autonomously driven to facilitate control of the trailer 10, so that the trailers 10 can be connected and separated according to the amount of cargo transported.

Hereinafter, the pulling unit 30, which is implemented in a different form, will be described in addition to the above-described electromagnetically pulling unit 30. [ 7 to 9 are plan views showing an embodiment of the pulling portion shown in Figs. 1 to 5. Fig.

Here, the towing portion 30 can be used to connect the towing vehicle 1 and the trailer 10, and one of the trailers 10 and one of the trailers 10.

First, referring to FIG. 7, the pulling portion 30 according to the first embodiment may be configured to be a refracting type. In this embodiment, the pulling portion 30 may include a link portion 33a, wherein the link portion 33a is formed by hinging a plurality of links 31a to each other. One of the links 31a is connected to one end of the other link 31a and the fixing member extending from the traction vehicle 1 or the trailer 10, It can be rotated around the center. Therefore, the link portion 33a is bent during the rotation of the traction vehicle 1 and the trailer 10, so that the trailer 10 and the trailer 10 can be moved between the traction vehicle 1 and the trailer 10 and / ) Can be corrected while keeping the binding.

The pulling portion 30 according to the second embodiment can be configured as a sliding type. Specifically, as shown in FIG. 8, the pulling portion 30 according to the present embodiment may include a coupling groove member 31b and a coupling projection member 33b. Here, one of the coupling groove member 31b and the coupling projection member 33b is mounted on the rear of the traction vehicle 1, and the other is mounted on the front of the trailer 10, respectively. When a plurality of trailers 10 are connected, one of them is mounted on the rear of one of the trailers 10 and the other is mounted on the front of another of the trailers 10, respectively.

On the outer surface of the coupling groove member 31b, a concave recessed sliding groove S is formed. The sliding groove S has a shape curved in a bow shape from one end to the other end, and is convexly arranged in the outer direction of the vehicle on which the coupling groove member 31b is mounted.

 The coupling protrusion member 33b has a connecting rod L whose one end is connected to the traction vehicle 1 or the trailer 10 and the other connecting rod L which is slidably inserted into the sliding groove S And may be formed as a projection P. Therefore, when the traction vehicle 1 or the trailer 10 disposed at the front is rotated, the projection P slides along the sliding groove S, thereby correcting the rotational angle of the vehicle. Here, one end of the linkage L is hinged to the traction vehicle 1 or the trailer 10 so that the linkage L can be rotatably provided.

It is also possible to forcibly adjust the position of the projection P in the sliding groove S so as to adjust the running position of the trailer 10 to be towed. This is because the rotation motor 35b is mounted on the coupling groove member 31b and the rotation shaft of the rotation motor 35b and the projection P of the coupling projection member 33b are connected to the actuator 37b composed of the cylinder and the piston, . Here, the position of the projection P is adjusted in such a manner that the projection P is slid while the rotation motor 35b rotates and the length of the actuator 37b elongates and contracts.

Referring to Fig. 9, the pulling portion 30 according to the third embodiment can be configured as a quilting ornament. The decorative pulling portion 30 includes a plurality of connecting members 31c connected to each other in such a manner that the other one is inserted, and the length is variable. At this time, either one end or the other end of the traction unit 30 is hinged to the traction vehicle 1 and the other one is hinged to the trailer 10, so that the traction unit 30 can rotate. Here, the length of the pulling portion 30 is elongated when the towing vehicle 1 rotates, and contracted when the towing vehicle 1 goes straight. Therefore, the length of the towing portion 30 is extended during the rotation of the towing vehicle 1, so that sufficient space can be secured between the towing vehicle 1 and the trailer 10, so that the turning radius is not restricted . Here, although the traction unit 30 is described in relation to the traction vehicle 1 and the trailer 10, in the case of connecting a plurality of trailers 10, the first trailer 10 disposed in front of the trailer 10 is not limited to the above- The second trailer 10 disposed rearwardly on the first trailer 10 corresponds to the above-described trailer 10 and can easily grasp the contents of the present invention.

Here, the pulling portion 30 formed of a plurality of connecting members 31c may be implemented as an actuator capable of moving back and forth the inner connecting member inserted into the outer connecting member. For example, have.

On the other hand, a buffering member (not shown) may be disposed in the collision area in order to prevent the rear surface of the traction vehicle 1 from colliding with the front surface of the trailer 10. The buffer member is a member having elasticity, for example, a spring, a rubber block, or the like can be used. Such a cushioning member protects the trailer 10 by preventing the trailer 10 from impacting when the towing vehicle 1 rotates beyond a rotatable radius. These buffer members can be arranged in the same manner even when the trailers 10 are connected to each other.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the same is by way of illustration and example only and is not to be construed as limiting the present invention. It is obvious that the modification or improvement is possible.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

1: tow vehicle 10: trailer
20: autonomous drive unit 21:
21a: electric motor 21b: battery
21c: generator 23: steering part
25: autonomous drive control unit 30:
40: sensor unit 50: communication unit
60: rear sensor unit

Claims (13)

A trailer which is connected to a rear portion of a towing vehicle operated by a driver and generates an independent propulsion force without a driver's operation while proceeding;
The trailer is mounted on the trailer and generates a propelling force independent of the towing vehicle by applying a rotational force to the wheels of the trailer. The relative rotation speed of the trailer wheel is controlled to steer the traveling direction of the trailer, An autonomous drive section;
A traction unit detachably connecting the towing vehicle and the trailer to each other;
A sensor unit mounted on the towing vehicle and collecting traveling information necessary for autonomous traveling of the trailer;
A rear sensor unit mounted on the trailer and collecting information on a rear road of the trailer;
A communication unit disposed in the towing vehicle and transmitting the traveling information collected by the sensor unit to the trailer; and a receiver disposed in the trailer and receiving the traveling information transmitted by the transmitter; And
And an autonomous drive unit for controlling driving of the trailer using the received drive information,
The self-
A steering unit for steering the trailer; a steering unit for steering the trailer; and an autonomic drive control unit for controlling the driving unit and the steering unit using the received driving information, wherein the driving unit comprises: And the steering unit controls the rotation speeds of the left and right wheels differently so as to steer the trailer in a direction in which the wheels with slow rotation speed are disposed,
Wherein the driving information collected by the sensor unit includes distance and near information of the road on which the towing vehicle travels,
And the communication unit transmits the rear road information collected by the rear sensor unit to the driver.
delete The method according to claim 1,
The driving unit
An electric motor for rotating the wheels of the trailer; And
A battery for supplying electricity to the electric motor;
The trailer driving system comprising:
The method according to claim 1,
The driving unit
An electric motor for rotating the wheels of the trailer; And
A generator mounted on the trailer and supplying electricity to the electric motor;
The trailer driving system comprising:
delete The method according to claim 1,
Wherein the trailer is a plurality of trailers, each of which is equipped with the autonomous travel portion and autonomously travels.
The method according to claim 1,
The self-
Controls the trailer to be arranged at the rear center of the towing vehicle when the towing vehicle goes straight,
When the towing vehicle starts to turn to the right, controls the trailer to be arranged on the rear right side of the towing vehicle,
Controls the trailer to be arranged on the rear left side of the towing vehicle when the right turn of the towing vehicle is finished and the trailer starts to turn to the right,
And controls the trailer to be arranged on a rear left side of the towing vehicle when the towing vehicle turns to the left.
The method according to claim 1,
The self-
And controls the traction unit when the towing vehicle rotates to separate the towing vehicle and the trailer from each other.
The method according to claim 1,
The pulling portion
Electromagnet; And
A traction control unit for supplying or blocking current to the electromagnet;
The trailer driving system comprising:
The method according to claim 1,
The pulling portion
A link portion formed by hinging a plurality of links to each other;
Wherein the towing vehicle is bent when the towing vehicle rotates.
The method according to claim 1,
The pulling portion
An engaging groove member recessed in the outer surface, the engaging groove member having a sliding groove curved from one end to the other end; And
A coupling protrusion member having protrusions inserted into the sliding groove to be slidable;
The trailer driving system comprising:
The method according to claim 1,
The pulling portion
A plurality of connecting members into which the other one is inserted;
Wherein the length of the towing vehicle is elongated when the towing vehicle rotates, and the length is contracted when the towing vehicle goes straight.
delete

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