KR20230120418A - Car for ground survey road maintenance - Google Patents

Abstract

The present invention relates to a ground survey vehicle for road maintenance, which can be raised or lowered with respect to the ground while a sinkhole sensing unit is mounted on the vehicle, and a camera mounted on the vehicle is protruded toward the ground so as to be installed on the driver's seat of the vehicle. Its purpose is to be able to check with the prepared monitor, and to protect the sensing unit from speed bumps, stones, and other various obstacles located on the ground.
A ground survey vehicle for road maintenance according to the present invention includes a vehicle unit; an elevation driving unit mounted on the vehicle; an elevation unit that can be moved up and down with respect to the ground by the elevation drive unit; and a sensing unit that is mounted on the elevation unit, moves up and down with respect to the ground, and senses a sinkhole existing on the ground during descent.

Description

Ground investigation vehicle for road maintenance {CAR FOR GROUND SURVEY ROAD MAINTENANCE}

The present invention relates to a ground survey vehicle for road maintenance, and more particularly, can be raised or lowered from the ground while a sensor for detecting a sinkhole is mounted on the vehicle, and a camera mounted on the vehicle protrudes toward the ground. It relates to a ground survey vehicle for road maintenance that can be checked with a monitor provided in the driver's seat of the vehicle and can protect the sensing unit from speed bumps, stones, and other various obstacles located on the ground.

In general, Ground Penetrating Radar (hereinafter referred to as GPR) is a device for accurately and objectively providing information on the location and depth of underground structures buried in the lower part of the road surface and cavities that may cause road depressions. .

Existing two-dimensional GPR exploration methods, including "Paved road safety diagnosis system and method using underground exploration radar" (hereinafter referred to as prior art) of Patent Registration No. 10-1241313, had the following problems.

Since it is difficult to grasp continuous signals for underground structures under the road surface or cavities such as sinkholes, which are objects to be investigated, reliability of the results may be lowered, and there are problems in that a lot of investigation time and input manpower are required.

In particular, in the case of the prior art, a low-frequency radar module and a plurality of high-frequency radar modules are mounted on a vehicle, and while moving on a road, low-frequency and high-frequency signals are radiated from the low-frequency radar module and the plurality of high-frequency radar modules at regular intervals, respectively, and corresponding low-frequency pulses The response signal and the high-frequency pulse response signal are received and recorded, and based on them, a radar image signal is generated and displayed on the screen.

However, in the case of the prior art, the low-frequency radar module and the plurality of high-frequency radar modules mounted on the vehicle interfere with the high-speed driving of the vehicle when it is necessary to move quickly to another place when the exploration is completed, so it is necessary to separate from the vehicle. There is a hassle.

In addition, in the prior art, when the exploration is to be resumed by moving the exploration location, the aforementioned low-frequency radar module and the plurality of high-frequency radar modules have to be mounted on the vehicle again, which is inconvenient.

Registered Patent Publication No. 10-1241313

The present invention has been made to solve the above problems of the prior art, and can raise or lower the sinkhole sensing unit mounted on the vehicle with respect to the ground, and the camera mounted on the vehicle protrudes toward the ground. The purpose is to provide a ground survey vehicle for road maintenance that can be checked with a monitor provided in the driver's seat of the vehicle and can protect the sensor from speed bumps, stones, and other various obstacles located on the ground.

A ground survey vehicle for road maintenance according to an embodiment of the present invention includes a vehicle unit; an elevation driving unit mounted on the vehicle; an elevation unit that can be moved up and down with respect to the ground by the elevation drive unit; and a sensing unit that is mounted on the elevation unit, moves up and down with respect to the ground, and senses a sinkhole existing on the ground during descent.

Further, the lift drive unit is installed to fold or unfold the loading unit of the vehicle in an upward and downward direction, and includes an elevation guide unit including upper and lower link portions for guiding the lift unit to move vertically with respect to the ground; Forward and backward driving units installed in the loading unit; a moving unit that is moved forward or backward by the forward and backward driving unit and has a guide member rotatably coupled to one side thereof; an additional guide member rotatably coupled to the mounting unit and positioned on a lower diagonal of the guide member; And a lifting operation unit having a lower side fixed to the lifting unit, an upper side fixed to the loading unit, and a predetermined area between the lower side and the upper side contacting the guide member and the additional guide member, respectively. When the reverse driver advances or reverses the movable part, the lifting operation part moves in both directions along the guide member and the additional guide member to raise or lower the lifting part, and the lifting guide part is folded or folded as the lifting part rises or falls. When the deployment operation is performed, the sensing unit is lowered or raised in a vertical direction with respect to the ground.

In addition, at least two or more of the lifting driving units are disposed on one side and the other side of the loading unit.

And, the lifting operation unit is formed of a chain or wire.

In addition, the housing disposed inside the loading box loaded in the loading section of the vehicle; a camera unit disposed to be spaced apart from each other along the longitudinal direction of the housing and photographing a sinkhole existing on the ground; A pull-out driving unit installed in the loading box and drawing the housing out of the loading box so that the camera unit photographs the sink hole; wherein the pull-out driving unit is formed as a cylinder or guides the withdrawal of the camera unit and a motor for generating power required for the camera unit to be drawn in and out of the screw unit.

And, at least one or more protruding rollers are installed on the front and rear surfaces of the sensing unit, and further include rollers that roll along obstacles on the road.

According to the ground survey vehicle for road maintenance according to the present invention, by raising or lowering the sinkhole sensing unit mounted on the vehicle to the ground, there is an effect of detecting a sinkhole while quickly moving to another place. .

In addition, the camera mounted on the vehicle can protrude toward the ground to be confirmed by a monitor provided in the driver's seat of the vehicle, so that the sinkhole detection operation can be easily performed.

In addition, by disposing rollers on the front and rear surfaces of the sensing unit, there is an effect of protecting the sensing unit from speed bumps, stones, and other various obstacles located on the ground.

1 is a perspective view showing a ground survey vehicle for road maintenance according to an embodiment of the present invention.
2 is a plan view showing a lift drive unit, a lift unit, and a sensing unit applied to a ground survey vehicle for road maintenance according to an embodiment of the present invention.
3 is a perspective view showing a lift drive unit applied to a ground survey vehicle for road maintenance according to an embodiment of the present invention, a lift unit, and a sensing unit;
4 and 5 are side views showing a state in which the lifting unit and the sensing unit are lowered or raised by the lifting driver applied to the ground survey vehicle for road maintenance according to an embodiment of the present invention.
6 is a side view showing a camera unit and a pull-out driving unit applied to a ground survey vehicle for road maintenance according to an embodiment of the present invention.
7 is a perspective view showing a camera unit and a pull-out driving unit applied to a ground survey vehicle for road maintenance according to an embodiment of the present invention.
8 is a side view showing another example of a pull-out driving unit applied to a ground survey vehicle for road maintenance according to an embodiment of the present invention.

Advantages and features of the present invention, and methods of achieving them, will become clear with reference to the detailed description of the following embodiments taken in conjunction with the accompanying drawings.

However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, and only these embodiments make the disclosure of the present invention complete, and common knowledge in the art to which the present invention belongs. It is provided to completely inform the person who has the scope of the invention, and the present invention is only defined by the scope of the claims. Like reference numbers designate like elements throughout the specification.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. However, the present invention may be embodied in many different forms and is not limited to the embodiments described herein. Like reference numerals have been assigned to like parts throughout the specification.

1 is a perspective view showing a ground investigation vehicle for road maintenance according to an embodiment of the present invention, and FIG. 2 shows an elevation driving unit, an elevation unit, and a sensing unit applied to the ground investigation vehicle for road maintenance according to an embodiment of the present invention. 3 is a perspective view showing an elevation driving unit, an elevation unit, and a sensing unit applied to a ground survey vehicle for road maintenance according to an embodiment of the present invention, and FIGS. 4 and 5 are according to an embodiment of the present invention. It is a side view showing a state in which the lifting unit and the sensing unit are lowered or raised by the lifting driving unit applied to the ground investigation vehicle for road maintenance, and FIG. 7 is a side view showing a drive unit, and FIG. 7 is a perspective view showing a camera unit and a pull-out drive unit applied to a ground survey vehicle for road maintenance according to an embodiment of the present invention, and FIG. 8 is a road maintenance unit according to an embodiment of the present invention. It is a side view showing another example of the pull-out drive applied to the ground survey vehicle.

A ground survey vehicle 1 for road maintenance according to an embodiment of the present invention includes a vehicle unit 10, a lift drive unit 20, a lift unit 30, a sensing unit 40, and a housing 50 And, it may include at least any one or more of the camera unit 60 and the pull-out driving unit.

While moving along the road, the vehicle unit 10 can cause the detector 40 to detect a sinkhole existing on the road, and the camera unit 60 to be described later to photograph the state of the road or the sinkhole. do.

The vehicle unit 10 may be formed of a known truck including a cab and a loading unit 11 .

In addition, the loading box 12 in the form of a box is loaded on the loading unit 11 .

The loading box 12 may be loaded with a camera unit 60 and various tools or items required for other road inspections or repairs.

The lift drive unit 20 is mounted on the vehicle unit 10 to elevate the lift unit 30, and the lift unit 30 moves up and down with respect to the ground by the lift drive unit 20 with the sensing unit 40 mounted thereon. do.

The elevation driving unit 20 includes at least one of an elevation guide unit 21, a forward and backward driving unit 22, a moving unit 23, an additional guide member 24, and a lifting operation unit 25. can do.

The elevation guide unit 21 is configured to guide the elevation unit 30 to be moved vertically to the ground.

To this end, the elevation guide part 21 may include an upper link part 211 and a lower link part 212 .

At this time, horizontal bars 111 are installed on both sides of the rear end of the loading part 11, and on the upper surface of the body part, two pivot guide pieces 31 are formed and arranged to be spaced apart from each other, so that the upper link part 211 ) and the lower link unit 212 may be applied.

The upper link part 211 includes a mounting hole mounted on the outer periphery of the horizontal bar 111 on the upper side.

The mounting hole may be rotated clockwise or counterclockwise while being mounted on the horizontal bar 111 . Due to this, the upper link portion 211 is rotated in an up and down direction based on the mounting hole.

The upper link portion 211 and the lower link portion 212 may be formed in a bar shape having a substantially 'c' cross-sectional shape so as to be easily coupled to each other.

The lower link portion 212 is formed to have a smaller size than the upper link portion 211 .

Accordingly, the upper portion of the lower link portion 212 is accommodated within the lower portion of the upper link portion 211 .

One first shaft (A) is installed in common through the contact area of the lower side of the upper link part 211 and the upper side of the lower link part 212 .

Therefore, the lower side of the upper link portion 211 and the upper side of the lower link portion 212 may be rotated in the up and down directions with respect to the first axis (A).

And, the lower side of the lower link part 212 is accommodated between the rotational pieces.

One second shaft (B) is installed through the lower link portion 212 and the rotation guide piece 31 in common.

Accordingly, the lower link portion 212 may be rotated in an up and down direction with respect to the second axis (B).

The upper link portion 211 and the lower link portion 212 are configured to be folded or deployed in the upward and downward directions, and the lower link portion 212 is connected to the main body via the rotation guide piece 31, so that the entire , When the reverse drive unit 22 is operated, the main body is lifted only in the vertical direction.

Furthermore, due to the upper link part 211 and the lower link part 212, the main body part can be moved up and down in a state in which structural stability is ensured.

The elevating structure of the main body will be described in detail below.

The forward/reverse driving unit 22 is configured to provide power so that the lifting unit 30 moves up and down.

Forward and backward driving unit 22 is formed in a ring shape on one side and a mounting hole mounted on the outer periphery of the horizontal bar 111 is formed.

The mounting hole is fixed to the horizontal bar (111). Therefore, the forward and backward driving unit 22 maintains a horizontal shape without being rotated in the up and down directions.

The forward and backward driving unit 22 may be applied to any one of a known hydraulic cylinder, an air cylinder, and a cam.

The drawing shows an example applied to a hydraulic cylinder or an air cylinder.

The moving unit 23 is disposed on one side of the loading unit 11 . The moving unit 23 is coupled to the piston of the forward and backward driving unit 22 .

Accordingly, the moving unit 23 moves forward or backward by the forward/reverse driving unit 22 .

The moving unit 23 may be formed in a polygonal block shape, and guide members 231 are rotatably coupled to both sides.

The guide member 231 is formed of a pulley or a roller R to guide the movement of the lifting operation unit 25 .

The ground survey vehicle 1 for road maintenance according to an embodiment of the present invention may further include a pair of rotation guides 80 for rotatably coupling the guide member 231 to the moving unit 23 in place. .

One surface of the rotation guide 80 is disposed to face each other, and is formed in a substantially rectangular frame shape, and a predetermined area of the surface facing each other is opened and fixed to the upper and lower surfaces of the moving unit 23, respectively.

The central part of the moving part 23 is accommodated in each inner space of the rotation guide 80, and the remaining parts may protrude out of the rotation guide 80.

In addition, the ground survey vehicle 1 for road maintenance according to an embodiment of the present invention has a third shaft C for rotatably coupling the guide member 231 to the moving part 23 and the rotation guide 80 can include

The third shaft (C) passes through the central portion of the rotation guide 80, the central portion of the guide member 231, and the central portion of the moving part 23 jointly.

Due to this, the guide member 231 may be rotated in place in a forward or reverse direction based on the third axis (C).

The additional guide member 24 may be formed of a pulley or a roller R to guide the movement of the lifting operation unit 25 together with the guide member 231 .

The additional guide member 24 includes an additional horizontal bar 241 having a circular cross section coupled to the side surface of the mounting unit 11 .

The additional guide member 24 includes a hollow. The additional horizontal bar 241 has a predetermined area located in the hollow of the additional guide member 24.

Accordingly, the additional guide member 24 may be rotated in place on the additional horizontal bar 241 .

The ground survey vehicle 1 for road maintenance according to an embodiment of the present invention may further include an additional rotation guide 90 for enabling rotation of the additional guide member 24 in place.

The additional rotation guide 90 is formed in a substantially 'c' cross-sectional shape.

One bent portion of the additional rotation guide 90 is bolted to the end of the additional horizontal portion, and the other bent portion is welded to the outer surface of the additional horizontal bar 241.

The other bent portion of the additional rotation guide 90 may be rounded into a curved shape so as to adhere to the outer surface of the additional horizontal bar 241 having a circular cross-section.

The additional guide member 24 is disposed on the rear right side of the guide member 231 based on FIG. 4 .

Also, the additional guide member 24 may be disposed lower than the guide member 231 .

Therefore, the additional guide member 24 is located on the lower diagonal of the guide member 231.

This is to allow a certain area of the lifting operation unit 25 to come into contact with the lower surface of the guide member 231 and another predetermined area of the lifting operation unit 25 to come into contact with the upper surface of the additional guide member 24 .

That is, due to the arrangement structure of the guide member 231 and the additional guide member 24, the bottom surface of the guide member 231 and the additional guide member based on the state in which the guide member 231 and the additional guide member 24 are stopped. Since the top surfaces of (24) are positioned on a horizontal line, the lifting operation unit 25 moves in a state where the portion between the certain area and the other certain area is level.

On the other hand, the lifting operation unit 25 is configured to substantially lift the lifting unit 30 through the power of the forward and backward driving unit 22 .

The lift operation unit 25 may be formed of a chain or wire, and an example formed of a chain is shown in the drawings.

The lower side of the lifting operation unit 25 is fixed to the upper surface of the main body unit, and the upper side constitutes the ground survey vehicle 1 for road maintenance according to an embodiment of the present invention, and the bracket unit coupled to the side surface of the loading unit 11 ( 100) is fixed.

At this time, the bracket part 100 is formed in a substantially elliptical shape and is coupled to the side surface of the loading part 11, and includes a base plate (101) including a pair of through holes, and a base plate (101). Coupling part 102 coupled to the upper side of the lifting operation part 25 and having a bolt part 103 protruding to the rear side of the base plate (101) through a through hole of the base plate (101) formed on one side, and It is fastened to the bolt part 103 and may include a nut 104 in close contact with the rear surface of the base plate (101).

Subsequently, a predetermined area between the lower and upper sides of the lifting operation unit 25 comes into contact with the guide member 231 and the additional guide member 24, respectively.

At this time, a certain area of the lifting operation unit 25 forms an approximate '⊂' shape by the guide member 231, and another predetermined area forms an approximate 'L' shape by the additional guide member 24.

And, the lifting part 30 forms a structure suspended from the guide member 231 and the additional guide member 24 through the lifting operation part 25 .

Therefore, when the forward/reverse driving unit 22 moves the moving unit 23 forward or backward, the lifting operation unit 25 moves in both directions along the guide member 231 and the additional guide member 24 and moves up and down. The unit 30 is raised or lowered, and the lifting guide unit 21 is folded or deployed as the lifting unit 30 is raised or lowered, so that the sensing unit 40 is lowered or raised only in the vertical direction with respect to the ground. do.

At least two or more lifting actuators 20 described above may be disposed on one side and the other side of the loading unit 11 so as to stably lift the lifting unit 30 .

In addition, the drawings show an example in which two lift drive units 20 are applied to one side and the other side of the loading unit 11, respectively.

On the other hand, the elevation unit 30 is formed in a substantially polygonal plate shape, and includes a main body portion on which the sensing unit 40 is mounted on a bottom surface and a guard portion that is vertically bent along the upper surface edge of the main body portion and wraps around the lower outer surface of the sensing unit 40. can do.

The sensing unit 40 is a component that detects a sinkhole existing on the road.

The sensing unit 40 may be mounted on the lower surface of the elevating unit 30 and move up and down with respect to the ground.

When detecting a sinkhole through the sensing unit 40, the lifting unit 30 is lowered through the lifting driving unit 20 so that the sensing unit 40 is closer to the ground, so that the sinkhole can be accurately detected. there is.

The sensing unit 40 may be formed of a ground penetrating radar (hereinafter referred to as 'GPR'). GPR is a non-destructive physical survey method, which detects sinkholes existing on the road by receiving the reflected wave according to the electromagnetic characteristics of the medium by using the high-frequency electromagnetic wave, the radar wave, as the transmission source.

At least one roller R is installed on the front and rear surfaces of the sensing unit 40 to protrude at regular intervals.

When the vehicle 10 travels on the road in a state in which the sensing unit 40 is lowered to the ground through the lift drive unit 20, the roller R rolls along a speed bump or other obstacle to detect the sensing unit Protect (40).

The housing 50 is a configuration in which at least one camera unit 60 is mounted.

The housing 50 is disposed in the inner space of the loading box 12 loaded in the loading part 11 of the vehicle part 10 .

The housing 50 may include a plurality of box parts 51 disposed to be spaced apart from each other.

Camera units 60 are respectively installed in the box unit 51 . The box part 51 has a structure with an open bottom so that the camera part 60 can take a picture of a sinkhole existing on the ground.

The camera unit 60 is installed in the inner space of the box unit 51 and captures a sinkhole existing on the ground through an open portion of the box unit 51 .

A monitor (not shown) electrically connected to the camera unit 60 is installed in the cab of the vehicle unit 10 .

Accordingly, an image photographed by the camera unit 60 is transmitted to the monitor in real time.

As a result, the operator located in the cab can sit comfortably in the cab and check the sinkhole without getting off the vehicle.

A door is formed in the loading box 12 so that a worker can enter and exit.

An upper portion of the loading box 12 is opened to allow the housing 50 to be drawn in or out.

The open portion may be formed above the door.

For example, as shown in FIG. 6 , the pull-out drive unit may be formed of a known hydraulic cylinder or air cylinder.

And, a forward button for moving the piston of the cylinder forward and a reverse button for moving the piston backward may be provided in the cab.

When the piston is moved forward by pressing the forward button, the housing 50 is drawn out of the loading box 12 and a sinkhole existing on the ground is photographed.

Then, when the reverse button is pressed to reverse the piston, it is drawn into the inside of the loading box 12 of the housing 50.

As another example, the pull-out drive unit may include a screw portion 71b for guiding the pull-out of the camera unit 60 and a motor 72b for generating power required for the pull-out and insert of the camera unit 60 .

As shown in FIG. 8 , a moving body 73b having a nut structure having a spiral formed on an inner periphery is formed on the upper surface of the housing 50 .

The moving body 73b is fastened to the spiral of the screw part 71b while being mounted on the outer periphery of the screw part 71b.

In addition, a rail part 74b having a certain length is formed on the ceiling surface of the loading box 12, and a slide part 75b whose upper part moves along the rail part 74b is formed on the upper surface of the moving body 73b. .

A guide hole formed in a substantially 'TT' cross-sectional shape is formed inside the rail part 74b, and a 'TT' shaped slide piece 751b having a shape corresponding to the guide hole is formed on the upper side of the slide part 75b. ) is formed.

The housing 50 can move forward or backward in the horizontal direction through the rail part 74b, the movable body 73b, and the slide part 75b.

In addition, a forward button for rotating the motor shaft of the motor 72b in a forward direction and a reverse button for rotating the motor shaft in a reverse direction may be provided in the cab.

For example, when the motor shaft is rotated in the forward direction by pressing the forward button, the screw portion 71b is rotated in the forward direction, and thus the movable body 73b is moved to the right end of the screw portion 71b, and the housing 50 and The camera unit 60 is withdrawn from the loading box 12 .

In addition, when the motor shaft is rotated in the reverse direction by pressing the reverse button, the screw portion 71b is rotated in the reverse direction, so that the moving body 73b moves to the left side of the screw portion 71b, and the housing 50 and the camera unit ( 60) is withdrawn from the loading box (12).

Next, an example of using the ground survey vehicle for road maintenance according to an embodiment of the present invention described above will be described.

First, in the case of general driving without sinkhole inspection, the elevation unit 30 is raised through the elevation driving unit 20 to separate the sensing unit 40 from the ground.

Further, in a state in which the sinkhole is located in the area to be inspected, the elevation unit 30 is lowered through the elevation driving unit 20 to bring the sensing unit 40 closer to the ground.

The operating method of the lift drive unit 20 will be described in detail as follows.

First, when the piston of the forward/backward driving unit 22 moves the moving unit 23 backward, the lifting operation unit 25 moves down along the guide member 24 and the additional guide member 24, and thereby the lifting operation unit ( The lifting part 30 coupled with the lower end of 25) descends. Therefore, the sensing unit 40 can detect a sinkhole by being close to the ground.

At this time, the descending distance of the elevation unit 30 varies depending on the length of the elevation operation unit 25. It can be formed to have.

Meanwhile, when the camera unit 60 is pulled out through the above-described pull-out drive unit, the sinkhole detected by the detector 40 can be monitored through a monitor provided in the driver's seat.

When a sinkhole is detected, the operator can mark it in color on the ground or place a cone-shaped marker on it to facilitate future repair work.

In this way, after detecting a sinkhole in a certain area, the vehicle unit 10 may be driven to detect another sinkhole located in front.

In the process of detecting the sinkhole, there is a case where the vehicle unit 10 moves forward or backward. As the cloud moves along bumps, stones, and other various obstacles, it is possible to guide the smooth driving of the vehicle unit 10, and the lifting unit 30 or the sensing unit 40 is prevented by speed bumps, stones, and other various obstacles. damage can be prevented.

Those skilled in the art to which the present invention pertains will understand that the present invention can be embodied in other specific forms without changing its technical spirit or essential features. Therefore, the embodiments described above should be understood as illustrative in all respects and not limiting. The scope of the present invention is indicated by the claims to be described later rather than the detailed description above, and all changes or modifications derived from the meaning and scope of the claims and equivalent concepts thereof are included in the scope of the present invention. should be interpreted

1: ground survey vehicle for road maintenance 10: vehicle department
11: loading part 111: horizontal bar
12: loading box 20: lifting drive unit
21: lifting guide part 211: upper link part
211a, 22a: mounting hole 212: lower link
22: forward and backward driving unit 23: moving unit
231: guide member 24: additional guide member
241: additional horizontal bar 25: lifting operation unit
30: lift part 31: rotation guide
40: sensing unit 50: housing
51: box part 60: camera part
70a, 70b: pull-out driving unit 71b: screw unit
72b: motor 73b: moving body
74b: rail part 75b: slide part
751b: slide piece 80: rotation guide
90: additional rotation guide 100: bracket part
101: base plate 102: coupling part
103: bolt part 104: nut

Claims (5)

vehicle department;
an elevation driving unit mounted on the vehicle;
an elevation unit that can be moved up and down with respect to the ground by the elevation drive unit; and
A ground survey vehicle for road maintenance including a sensing unit mounted on the elevation unit to move up and down with respect to the ground, and detecting a sinkhole existing on the ground when descending.
According to claim 1,
The lift drive unit,
an elevation guide portion including upper and lower link portions installed to fold or deploy the loading portion of the vehicle in an upward and downward direction and guide the elevation portion to ascend and descend in a vertical direction with respect to the ground;
Forward and backward driving units installed in the loading unit;
a moving unit that is moved forward or backward by the forward and backward driving unit and has a guide member rotatably coupled to one side thereof;
an additional guide member rotatably coupled to the mounting unit and positioned on a lower diagonal of the guide member; and
A lifting operation unit having a lower side fixed to the lifting unit, an upper side fixed to the loading unit, and a predetermined area between the lower side and the upper side being in contact with the guide member and the additional guide member, respectively,
When the forward or backward drive unit moves the moving unit forward or backward, the lifting operation unit moves in both directions along the guide member and the additional guide member to raise or lower the lifting unit, and the lifting guide unit moves the lifting unit up or down. A ground survey vehicle for road maintenance in which the sensing unit is lowered or raised in a vertical direction with respect to the ground by being folded or deployed according to the ground.
According to claim 2,
At least two or more of the lifting driving units are disposed on one side and the other side of the loading unit,
The elevation operation unit is a ground survey vehicle for road maintenance formed of a chain or wire.
According to claim 1,
a housing disposed inside the loading box loaded in the loading part of the vehicle;
a camera unit disposed to be spaced apart from each other along the longitudinal direction of the housing and photographing a sinkhole existing on the ground;
A pull-out drive unit installed in the loading box and pulling the housing out of the loading box so that the camera unit photographs the sink hole;
The pull-out drive unit is formed of a cylinder or includes a screw unit for guiding the pull-out of the camera unit and a motor for generating power necessary for the pull-out of the camera unit on the screw unit.
According to claim 1,
A ground surveying vehicle for road maintenance further comprising at least one roller protruding from the front and rear surfaces of the sensing unit and rolling along obstacles on the road.

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