KR102489254B1 - Measuring device for tunnel of vehicle - Google Patents

Abstract

An apparatus for measuring inside a tunnel for a vehicle according to an embodiment of the present invention includes: a lifting unit that is movably coupled to a vehicle; A scaffolding structure that provides a boarding space for people and is coupled to the upper part of the elevating unit; a jib that is elastically coupled to the elevation part; and a GPR survey unit coupled to an end of the jib and examining an inner wall of the tunnel, wherein the scaffold structure is rotatable about a vertical axis on the elevation unit.

Description

Tunnel internal measuring device for vehicles {MEASURING DEVICE FOR TUNNEL OF VEHICLE}

The present invention relates to a tunnel interior measuring device for a vehicle, which is installed in a vehicle and capable of measuring the interior of a tunnel.

Tunnel construction can be carried out in the order of tunnel excavation, reinforcement, and concrete lining installation. That is, after pouring reinforcing shotcrete (SHOTCRETE) on the rock excavation surface of the excavated tunnel to make the excavation surface even, a nonwoven fabric or waterproof sheet is attached to the outer surface of the shotcrete. After attaching a non-woven fabric or waterproof sheet to the outer surface of the shotcrete, concrete is placed on the inner side and cured to form a tunnel lining.

Non-destructive testing may be performed on the tunnel lining concrete to determine the state of the inside of the tunnel including the inner wall surface of the tunnel. Non-destructive testing may include rebound hardness testing, crack testing, hammer testing, and GPR exploration.

The rebound hardness test is an inspection method that measures the surface strength of concrete and determines the compressive strength of concrete from the measured value. Crack inspection is an inspection for determining the length and depth of a crack, and in particular, ultrasonic waves can be used to measure the depth of a crack. The condition of the concrete can be judged based on the crack depth. The hammering test is a method of diagnosing the state of concrete through the impact sound generated by hitting the concrete. GPR survey is a survey method using reflected waves returned from a reflector after radiating electromagnetic waves to concrete.

When performing a precise tunnel safety diagnosis to determine the conditions inside the tunnel, the inspector makes the diagnosis by relying on the naked eye, which leads to a problem in which the accuracy of the judgment is low. Additionally, investigators may have difficulty lifting or handling heavy equipment.

The inventor of the present invention has come to complete the present invention after a long period of research and trial and error on a measuring device for measuring the inside of a vehicle tunnel for determining the condition inside the tunnel.

An object of the present invention is to provide a tunnel interior measuring device for a vehicle that easily determines conditions inside a tunnel including an inner wall surface of the tunnel.

Other non-specified objects of the present invention will be additionally considered within the scope that can be easily inferred from the following detailed description and effects thereof.

According to one aspect of the present invention, a lifting unit that is coupled to a vehicle to be moved up and down; A scaffolding structure that provides a boarding space for people and is coupled to the upper part of the elevating unit; a jib that is elastically coupled to the elevation part; and a GPR survey unit coupled to an end of the jib to examine an inner wall of the tunnel, wherein the scaffold structure is rotatable about a vertical axis on the elevation unit.

When the scaffolding structure is raised to the highest point by the elevating unit, the scaffolding structure may rotate 90 degrees.

The elevation unit may include a height adjustment unit installed in the vehicle; and a support portion coupled to the height adjusting portion, and the house may be coupled to the support portion.

The support portion may be coupled to the height adjusting portion, the scaffold structure may be coupled to the support portion, and the scaffold structure may be rotatable on the support portion.

The elevation part, the support part is coupled to the height adjusting part, and further includes a sliding part coupled to the support part, the scaffold structure is coupled to the sliding part, and the sliding part slides back and forth with respect to the support part. And, the scaffolding structure may be rotatable on the sliding part.

When the scaffolding structure is raised to the highest point by the height adjusting unit, the sliding unit slides to the rear side, and the scaffolding structure can be rotated 90 degrees.

The GPR exploration unit may include a frame coupled to an end of the house; a probe coupled to the frame to inject electromagnetic waves into the inner wall of the tunnel and analyze reflected waves; and a contact portion coupled to the frame and contacting an inner wall of the tunnel, wherein the contact portion may include a wheel.

A light emitting unit may be coupled to the wheel.

The house may be capable of adjusting an angle with respect to the elevation part.

According to another aspect of the present invention, a lifting unit coupled to be able to move up and down in a vehicle; A scaffolding structure that provides a boarding space for people and is coupled to the upper part of the elevating unit; a jib that is elastically coupled to the vehicle; and a GPR survey unit coupled to an end of the jib to investigate an inner wall of the tunnel, wherein the scaffold structure is rotatable about a vertical axis on the elevation unit.

According to an embodiment of the present invention, the accuracy and reliability of determining the condition inside the tunnel can be improved.

According to an embodiment of the present invention, the risk of a safety accident can be reduced when determining the condition inside the tunnel.

On the other hand, even if the effects are not explicitly mentioned here, it is added that the effects described in the following specification expected by the technical features of the present invention and their provisional effects are treated as described in the specification of the present invention.

1 to 4 are diagrams showing a measuring device inside a vehicle tunnel according to an embodiment of the present invention.
5 and 6 are diagrams showing an inside measuring device for a vehicle tunnel according to another embodiment of the present invention.
It is revealed that the accompanying drawings are illustrated as references for understanding the technical idea of the present invention, and thereby the scope of the present invention is not limited thereto.

In the description of the present invention, if it is determined that a related known function may unnecessarily obscure the subject matter of the present invention as an obvious matter to those skilled in the art, the detailed description thereof will be omitted.

Terms used in this application are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this application, the terms "include" or "have" are intended to designate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, but one or more other features It should be understood that the presence or addition of numbers, steps, operations, components, parts, or combinations thereof is not precluded.

Hereinafter, an apparatus for measuring the inside of a vehicle tunnel according to the present invention will be described in detail with reference to the accompanying drawings. will be omitted.

1 to 4 are diagrams showing a measuring device inside a vehicle tunnel according to an embodiment of the present invention.

The device for measuring the inside of a tunnel for vehicles according to an embodiment of the present invention is used for diagnosing and determining the condition inside the tunnel by measuring and examining the inside of the tunnel by an investigator inside the tunnel (hereinafter, an investigator). (lining, etc.) can be measured, investigated, diagnosed, and judged.

An apparatus for measuring inside a vehicle tunnel according to an embodiment of the present invention may be installed in the vehicle 1 . Here, the vehicle 1 includes a truck or the like, and the type of vehicle 1 is not limited in the present invention. In addition, the vehicle tunnel interior measurement device may be coupled to a luggage compartment of a vehicle (truck), but is not limited thereto.

Referring to FIG. 1 , an apparatus for measuring inside a vehicle tunnel according to an embodiment of the present invention may include a lift unit 10, a scaffold structure 20, a house 100, and a GPR exploration unit 30.

The elevation unit 10 is configured to be movably coupled to the vehicle 1 . The lifting unit 10 may be moved up and down, and may be raised and lowered to any point between the lowest point and the highest point. Also, the elevation part 10 may be rotatable about a vertical axis.

The elevating unit 10 may elevate the scaffolding structure 20 . The scaffolding structure 20 may be elevated together with the vertical elevation of the elevation unit 10 . The scaffolding structure 20 may be positioned from the lowest point to the highest point by the elevating unit 10 .

The scaffolding structure 20 is a structure that provides a boarding space for people, and an investigator can board the scaffolding structure 20 to measure and examine the inner wall of the tunnel. The scaffolding structure 20 includes a plate on which an investigator can stand or sit, and may further include a handrail. The height of the handrail may be set based on the average male height for the safety of the investigator.

In addition, a control device capable of controlling the house 100 and/or the GPR exploration unit 30 may be seated on the scaffold structure 20, and an investigator may operate the control device within the scaffold structure 20. there is. An investigator may board the tunnel scaffold structure 20 and control the house 100 and/or the GPR exploration unit 30 with a control device while inspecting the inside of the tunnel (the inner wall of the tunnel). Here, 'control' may include position movement, length adjustment, height adjustment, angle adjustment, start and end of exploration, and the like.

The scaffolding structure 20 may be coupled to an upper portion of the elevating unit 10 . Since the scaffold structure 20 is coupled to the upper part of the elevation part 10, it can move along with the elevation of the elevation part 10. That is, when the elevation part 10 rises, the scaffold structure 20 rises together, and when the elevation part 10 descends, the scaffold structure 20 may descend together.

At the lowest point of the elevating unit 10 and the scaffolding structure 20, the investigator gets on the scaffolding structure 20, and when the elevating unit 10 rises, the scaffolding structure 20 and the investigator climb on the inner wall of the tunnel (eg, tunnel ceiling surface) can rise close to it.

Meanwhile, the scaffold structure 20 may be rotatable about a vertical axis on the elevation part 10 . Rotating about the vertical axis means rotating about the z axis when the ground is in the xy plane. The scaffolding structure 20 may be rotatable 360 degrees about a vertical axis.

The scaffolding structure 20 can be rotated about a vertical axis as needed. The scaffold structure 20 can rotate 90 degrees when it is raised to the highest point by the elevating unit 10. For example, when an investigator boards the scaffold structure 20 at the lowest point of the scaffold structure 20 and the scaffold structure 20 rises to the highest point, the scaffold structure 20 may rotate 90 degrees.

The scaffolding structure 20 may have a rectangular bottom. When the scaffolding structure 20 is at the lowest point, the long side of the scaffolding structure 20 may be arranged perpendicular to the longitudinal direction of the truck, but when it is at the highest point, it is rotated 90 degrees so that the long side is parallel to the longitudinal direction of the truck. can be placed.

The elevation unit 10 includes height adjusting units 11 and 12 and a support unit 13 and may further include a sliding unit 14 .

The height adjustment units 11 and 12 may be installed in a vehicle, and are coupled to a lower part (fixed end) 11 having a fixed position and on the lower part 11, up and down on the lower part 11. It includes an upper part (moving end) 12 that can be moved, and the height of the entire height adjusting parts 11 and 12 (height from the lower part to the upper part) varies according to the up and down movement of the upper part 12. can A flexible structure may be interposed between the lower part 11 and the upper part 12 .

The support part 13 may be coupled to the height adjusting parts 11 and 12 . The support part 13 is not a structure whose height changes by itself, and may be positioned (combined) below or above the height adjusting parts 11 and 12 .

When the support part 13 is positioned (coupled) on the lower side of the height adjusting parts 11 and 12, the lower fixing ends 11 of the height adjusting parts 11 and 12 may be fixed to the support part 13. When the support part 13 is positioned (coupled) on the upper side of the height adjusting parts 11 and 12, the support part 13 is coupled to the upper moving end 12, and the upper moving end 12 moves up and down. Along with it, the support part 13 can also move together.

In FIG. 1 , the support part 13 is shown as being located on the height adjusting parts 11 and 12 , but is not limited thereto, and the support part 13 may be located under the height adjusting parts 11 and 12 .

When the support unit 13 is coupled to the height adjusting units 11 and 12, the scaffolding structure 20 may be coupled to the support unit 13. According to the elevation of the elevation unit 10, the support unit 13 and the scaffold structure 20 may also ascend and descend together.

In the elevation part 10, the support part 13 is coupled to the height adjusting parts 11 and 12, the scaffold structure 20 is coupled to the support part 13, and the scaffold structure 20 is coupled to the support part 13 ) may be rotatable about a vertical axis.

In addition, the elevating unit 10 may be rotatable about a vertical axis. When the support unit 13 is coupled to the height adjusting units 11 and 12, the support unit 13 rotates on the vertical axis on the height adjusting units 11 and 12. can be rotated about When the height adjustment units 11 and 12 are coupled to the support unit 13, the lower fixing ends 11 of the height adjustment units 11 and 12 may rotate about a vertical axis on the support unit 13. Accordingly, the height adjustment unit (11, 12) as a whole can be rotated with respect to the vertical axis.

The sliding part 14 can be coupled to the support part 13 and can slide back and forth with respect to the support part 13 . The support part 13 can further slide left and right.

The scaffolding structure 20 may be coupled to the sliding part 14 . Therefore, when the sliding part 14 slides, the scaffold structure 20 can also move in parallel on the xy plane.

As described above, the scaffold structure 20 may have a rectangular bottom. When the scaffolding structure 20 is at the lowest point, the long side of the scaffolding structure 20 may be arranged perpendicular to the longitudinal direction of the truck, but when it is at the highest point, it is rotated 90 degrees so that the long side is parallel to the longitudinal direction of the truck. can be placed.

Here, when the scaffolding structure 20 is at the highest point (when the height control units 11 and 12 are raised to the highest point), the sliding part 14 slides to the rear so that the scaffolding structure 20 can move backward. there is. After that, the scaffolding structure 20 can rotate 90 degrees. According to this, a space for the long side of the scaffold structure 20 to be parallel to the longitudinal direction of the truck can be secured.

The jib 100 is a structure elongated in a certain direction and may be installed on the vehicle 1 .

The house 100 may be flexible. That is, the length of the house 100 can be adjusted. The house 100 may be implemented with at least one of a jimmy jib, a crane, and a rod. The length of the house ijb may be 9 to 15 m, but is not limited thereto, and the length of the house 100 may be determined differently depending on the size of the tunnel.

The house 100 may be installed on the elevation part 10 . The house ijb may be installed on the support part 13 of the elevation part 10 . When the support part 13 is positioned (combined) below the height adjusting parts 11 and 12, the house 100 may expand and contract while being fixed under the height adjusting parts 11 and 12. When the support part 13 is located (combined) above the height adjusting parts 11 and 12, the house 100 can move up and down according to the height adjusting parts 11 and 12.

The angle of the house 100 may be adjustable with respect to the elevation part 10 . The house 100 may be coupled to the support part 13 so that an angle can be adjusted.

The GPR exploration unit 30 is coupled to the end of the house 100 and may investigate the inner wall of the tunnel. The GPR exploration unit 30 uses a GPR exploration method. The GPR exploration unit 30 may measure the inner wall of the tunnel while being in contact with the inner wall surface T of the tunnel.

GPR survey is a type of non-destructive survey that uses the reflected wave returned to the reflector after radiating electromagnetic waves to the concrete. According to the GPR survey, it is possible to investigate the thickness of concrete reinforcement, internal cavity, lining steel support, lining thickness, lining back cavity, etc.

Referring to FIG. 1, the lower fixed ends 11 of the height adjusting units 11 and 12 are fixed to the vehicle, and the upper movable end 12 is located as close as possible to the lower fixed end 11 to reach the lowest point. located in The house 100 is coupled to the support part 13 coupled to the upper moving end 12, and the sliding part 14 is coupled to the support part 13. A scaffolding structure 20 is coupled to the sliding part 14 .

The house 100 can expand and contract, adjust its angle, and move to the inner wall surface T of the tunnel. In this case, expansion and contraction, rotation, and angle adjustment of the connecting structure 700 to be described later may also be performed. An investigator riding on the scaffolding structure 20 can control the extension, rotation, and angle adjustment of the house 100, the connecting structure 700, the elevation unit 10, and the scaffolding structure 20.

Referring to FIG. 2, while the upper moving end 12 moves upward, the height adjusting parts 11 and 12 lengthen upward, and accordingly, the support part 13, the sliding part 14, and the scaffolding structure The height of (20) can also be increased.

Referring to FIG. 3 , the sliding part 14 slides to the rear side, and the scaffolding structure 20 can also move to the rear side.

Referring to Figure 4, the scaffolding structure 20 can be rotated 90 degrees. An investigator riding on the scaffolding structure 20 may control the exploration unit within the scaffolding structure 20 . According to the movement of the sliding part 14 and the rotation of the scaffold structure 20, the scaffold structure 20 can occupy a space with sufficient margin.

Meanwhile, the length of the house 100 is extended so that the GPR probe 30 can contact the inner wall surface T of the tunnel, and the angle of the house 100 relative to the support 13 can be adjusted.

The GPR probe 30 may include a frame 200, a probe 300, and a contact unit 400.

The frame 200 is coupled to the end of the house 100 (the end facing the inner wall of the tunnel). The frame 200 may serve to support the probe 300. The frame 200 may be formed of a combination of plate-like members, and may be formed of metal or plastic material.

Referring to FIG. 7 , the frame 200 may include a horizontal portion 210 and a vertical portion 220 . In the basic state (the frame 200 is not rotated), the horizontal part 210 is formed horizontally with the ground, and the vertical part 220 is formed perpendicularly to the ground (perpendicular to the horizontal part 210). there is. The house 100 may be coupled to the vertical portion 220 of the frame 200.

The horizontal portion 210 and the vertical portion 220 may each be formed in a plate shape. One side of the vertical portion 220 may look at the inner wall of the tunnel. The vertical portion 220 may be coupled to be erected at both ends of one surface of the horizontal portion 210 . In this case, the cross section of the frame 200 may have a 'c' shape. However, the coupling relationship between the horizontal portion 210 and the vertical portion 220 is not limited. Meanwhile, the vertical portion 220 and the horizontal portion 210 may be manufactured and attached to each other or integrally manufactured.

The explorer 300 may be coupled to the frame 200 to inject electromagnetic waves into the inner wall of the tunnel and analyze the reflected waves. The probe 300 may include a transmitter that emits electromagnetic waves, a receiver that receives reflected waves, and an analyzer. The explorer 300 may conduct exploration while in contact with the inner wall surface T of the tunnel.

After the transmitter makes the electromagnetic waves incident on the inner wall of the tunnel, the receiver receives the reflected waves that are continuously reflected from the medium interface and return. In addition, the analyzer may analyze the reflected wave to measure the condition of the inner wall of the tunnel (existence, depth, location, and scale of internal cracks and cavities).

Part of the electromagnetic wave is reflected at the interface where the properties of the medium change, and part of it is transmitted to another medium layer and continues to proceed. The propagation speed and wavelength of electromagnetic waves vary according to the characteristics (dielectric constant) of each medium through which the electromagnetic waves pass, and the reflection characteristics depend on the dielectric constant difference between the two mediums. Therefore, the thickness and location of the medium layer can be identified through the properties of the medium (dielectric constant) and the time the electromagnetic wave passes through the medium, and the interface between the two materials, the presence or absence of internal cracks and cavities, and the depth, location, and scale of the medium can be measured. can do.

The contact portion 400 may be coupled to the frame 200 so as to contact the inner wall surface T of the tunnel. The contact portion 400 may contact the inner wall surface T of the tunnel for GPR exploration. When the frame 200 comes close to the inner wall surface T of the tunnel, the contact portion 400 may contact the inner wall surface T of the tunnel before the probe 300. Accordingly, the contact portion 400 can prevent the probe 300 from colliding with the inner wall surface T of the tunnel.

Referring back to FIG. 7 , the contact portion 400 may include a support 410 and wheels 420 .

The support 410 may serve to support the wheel 420 . The support 410 is coupled to the frame 200, and in particular, may be coupled to one surface of the horizontal portion 210 of the frame 200.

The support 410 may include a horizontal support 411 and a vertical support 412 . The horizontal support 411 of the support 410 may be coupled to one surface of the horizontal portion 210 of the frame 200. Here, the horizontal support 411 is positioned on the same plane as the horizontal portion 210 of the frame 200, but the vertical support 412 may be formed perpendicular to the horizontal support 411.

If the horizontal portion 210 of the frame 200 is placed on the xy plane, the horizontal support 411 is on the xy plane, but may be disposed perpendicular to the horizontal portion 210 of the frame 200. That is, the horizontal portion 210 of the frame 200 may be disposed parallel to the y-axis, and the horizontal support 411 may be disposed parallel to the x-axis.

The vertical support 412 is made of a pair and may be coupled to both ends of the horizontal support 411 . The horizontal support 411 and the vertical support 412 may be integrally formed. The horizontal part 210 of the frame 200 and the horizontal support 411 are arranged perpendicular to each other on the xy plane (the horizontal part 210 of the frame 200 is arranged parallel to the y-axis, the horizontal support 411 is x axis), the vertical portion 220 of the frame 200 may be placed on the xz plane, and the vertical support 412 may be placed on the yz plane.

The support 410 may be formed as a pair. A pair of supports 410 may be disposed biased toward both ends of the horizontal portion 210 of the frame 200, respectively. Here, the support 410 may include two horizontal supports 411 and four vertical supports 412 . Meanwhile, the explorer 300 may be disposed between the pair of supports 410 (between the pair of horizontal supports 411).

The wheel 420 may be coupled to the support 410 . The wheel 420 is coupled to the vertical support 412, and when there are a plurality of vertical supports 412, the wheel 420 may be coupled to each vertical support 412. Therefore, when the number of vertical supports 412 is 4, the number of wheels 420 is also 4.

The outer circumferential surface of the wheel 420 may be coupled to the support 410 in a form capable of contacting the inner wall surface T of the tunnel. That is, when the explorer 300 is in contact with the inner wall surface (T) of the tunnel, the outer circumferential surface of the wheel 420 is in contact with the inner wall surface (T) of the tunnel. All four wheels 420 may come into contact with the inner wall surface T of the tunnel. Accordingly, the position of the frame 200 can be fixed, and the probe 300 can stably perform exploration without shaking.

Meanwhile, the wheel 420 may roll while in contact with the inner wall surface T of the tunnel. That is, the wheel 420 may rotate along the inner wall surface T of the tunnel. Accordingly, the aspect to be diagnosed can be changed. The wheel 420 may rotate minutely, and the surface to be measured by the probe 300 may be minutely changed.

A light emitting unit (not shown) may be installed on the wheel 420 . When the inside of the tunnel is dark and the ground user cannot accurately see the movement of the wheel 420, the user can determine the position of the wheel 420 through the light of the light emitting part of the wheel 420.

The light emitting part of the wheel 420 is installed on the outer surface of the wheel 420 so that the user can easily observe the light. The light emitting part of the wheel 420 may include a light source such as an LED. In addition, the light emitting part of the wheel 420 may include a piezoelectric element. According to the piezoelectric element coupled to the wheel 420, when the wheel 420 rolls along the inner wall surface (T) of the tunnel or is pressed toward the inner wall surface (T) of the tunnel, current is generated by the piezoelectric effect and the light source emits light. can

The position of the contact part 400 may be changed so that the length between the inner wall surface T of the tunnel and the contact part 400 changes. For example, the support 410 may be stretched, and accordingly, the distance between the inner wall surface T of the tunnel and the wheel 420 may change.

In this case, the support 410 may include a flexible vertical support 412 . The vertical support 412 may include a fixed support 412a and a movable support 412b. The moving support 412b may move up and down with respect to the fixed support 412a.

On the other hand, when there is a pair of supports 410 and a total of four vertical supports 412, each of the vertical supports 412 may simultaneously expand and contract.

Alternatively, each of the vertical supports 412 may expand and contract differently. In this case, all of the plurality of wheels 420 of the contact portion 400 can easily come into contact with the inner wall surface T of the tunnel even when the inner wall surface T of the tunnel is curved.

Specifically, in a state where the vertical support 412 is not stretched, the frame 200 moves along the inner wall surface of the tunnel by expansion, rotation, and angle adjustment of the house 100, the connecting structure 700 and the fixed connector 710 described later. (T) Can move closer.

After the frame 200 moves closer to the inner wall surface T of the tunnel, the position of the frame 200 is fixed, and only the vertical support 412 can be extended. The up and down movement of the vertical support 412 can be made relatively fine, and accordingly, a sudden collision between the explorer 300 and the inner wall surface T of the tunnel can be prevented.

Meanwhile, the structure for extending and contracting the support 410 may be implemented in a method other than the above-described method, and is not limited to the above-described method.

A connection structure 700 may be interposed between the house 100 and the frame 200 . The connection structure 700 may connect the house 100 and the frame 200 to each other.

The connection structure 700 may be rotatably coupled to the house 100, and the frame 200 may be rotatably coupled to the connection structure 700. Here, the rotation direction of the connection structure 700 relative to the house 100 and the rotation direction of the frame 200 relative to the connection structure 700 may be different from each other. Accordingly, the explorer 300 can diagnose various parts of the inner wall surface T of the tunnel.

A fixed connecting rod 710 may be fixedly coupled to the house 100 . The connecting structure 700 may be rotatably coupled to the fixed connecting rod 710 .

A hinge portion 711 may be interposed between the fixed connection base 710 and the connection structure 700 . The connection structure 700 can rotate about the hinge portion 711 of the fixed connecting rod 710 as an axis, for example, the connection structure 700 can rotate on the xy plane. Alternatively, the connection structure 700 may rotate on the yz plane. However, the rotation direction of the connecting structure 700 is not limited and may vary as needed.

A rotation coupling part 720 may be provided between the connection structure 700 and the frame 200 . The rotary coupling part 720 may include a bearing. The frame 200 may rotate around the rotation coupling part 720 . For example, the frame 200 may rotate around the y-axis. The rotation angle range may be 150 degrees, but is not limited, and the rotation direction is also not limited and may vary as needed.

The connection structure 700 and the like may include a robotics (joint) system.

8 is a diagram showing another example of a frame in the present invention. 8, illustration of the explorer 300 is omitted.

Referring to FIG. 8 , the position of the frame 200 may change so that the length between the inner wall surface T of the tunnel and the contact portion 400 changes. For example, the frame 200 may further include a second frame 230 , and the frame 200 may move up and down relative to the second frame 230 .

In this case, the frame 200 may be coupled to the inside of the second frame 230, and the connection structure 700 may be coupled to the second frame 230. The second frame 230 may rotate with respect to the connection structure 700 . In addition, a stopper 231 may be provided on the second frame 230 to limit the position of the frame 200 .

Referring to FIG. 8 (a), the frame 200 may be positioned inside the second frame 230 and the position may be fixed by a stopper 231. Referring to FIG. 8( b ), the frame 200 may move up and down relative to the second frame 230 .

Specifically, in the state of FIG. 8 (a), the frame 200 can be moved closer to the inner wall surface T of the tunnel by the expansion and contraction of the house 100, the connection structure 700, and the fixed connecting rod 710, etc. .

After the frame 200 moves closer to the inner wall surface T of the tunnel, the frame 200 may rise from the second frame 230 as shown in FIG. 8(b). The up and down movement of the frame 200 can be made relatively fine, and a sudden collision between the explorer 300 and the inner wall surface T of the tunnel can be prevented.

9 is a diagram showing another example of a frame in the present invention.

Referring to FIG. 9 , the contact part 400 may further include a buffer part 430 . The shock absorber 430 can alleviate impact when the outer circumferential surface of the wheel 420 contacts the inner wall surface T of the tunnel.

The buffer unit 430 may include a highly elastic material, for example, a spring. The buffer 430 may be built into the support 410 (vertical support 412).

Referring to FIG. 9 (a), as the axis of the wheel 420 is coupled to the support 410 (vertical support 412), the shock absorber 430 is coupled to the axis of the wheel 420.

Referring to FIG. 9(b) , when the wheel 420 contacts the inner wall surface T of the tunnel, the axis of the wheel 420 may contract the buffer 430 inside the support 410. Accordingly, the shock absorber 430 absorbs impact, and the wheel 420 can be protected from impact. When the wheel 420 is separated from the inner wall surface T of the tunnel, the buffer 430 may return to its original state by elastic force.

9 shows only a spring as the buffer unit 430, but the buffer unit 430 is not limited to the spring, and any configuration capable of a buffer action may be applied.

Referring to FIGS. 5 and 6 , the house 100 may be directly installed on the vehicle 1 instead of the elevator 10 . In this case, the scaffold structure 20 is coupled to the elevating portion 10, and the elevating portion 10 and the scaffolding structure 20 move together, but the house ijb can act independently. In addition, the support part 13 and the sliding part 14 in the elevation part 10 may be omitted.

FIG. 5 shows before the lifting part 10 rises, and FIG. 6 shows it after the lifting part 10 rises. The scaffold structure 20 may rotate 90 degrees when the elevation part 10 is located at the highest point.

The protection scope of the present invention is not limited to the description and expression of the embodiments explicitly described above. In addition, it is added once again that the protection scope of the present invention cannot be limited due to obvious changes or substitutions in the technical field to which the present invention belongs.

1: vehicle
10: lift part
20: scaffolding structure
30: GPR exploration department
100: jib
200: frame
300: explorer
400: contact
410: support
420: wheel
430: buffer part
700: connection structure

Claims (10)

a lifting unit that is coupled to the vehicle so that it can be moved up and down;
A scaffolding structure that provides a boarding space for people and is coupled to the upper part of the elevating unit;
a jib that is elastically coupled to the elevation part; and
A GPR survey unit coupled to the end of the jib and examining the inner wall of the tunnel,
The scaffolding structure is rotatable about a vertical axis on the elevation,
The lift part,
a height adjustment unit installed in the vehicle;
a support unit coupled to the height adjusting unit; and
Including a sliding portion coupled to the support portion,
The house is coupled to the support,
The scaffold structure is rotatably coupled to the sliding part,
When the scaffolding structure is raised to the highest point by the elevating unit,
After the sliding part moves from the house to the rear side and the scaffolding structure moves backward, the scaffolding structure rotates,
The GPR exploration unit,
a frame coupled to the end of the house;
a probe coupled to the frame to inject electromagnetic waves into the inner wall of the tunnel and analyze reflected waves; and
A contact portion coupled to the frame and contacting the inner wall of the tunnel,
The contact part includes a buffer part,
The buffer unit includes an elastic member to mitigate the impact when the contact unit contacts the inner wall of the tunnel,
In-vehicle tunnel measuring device. According to claim 1,
Characterized in that the scaffold structure rotates 90 degrees,
In-vehicle tunnel measuring device. According to claim 1,
The bottom of the scaffolding structure is formed in a rectangle,
Characterized in that the scaffolding structure is rotated so that the long side of the floor is arranged parallel to the longitudinal direction of the vehicle,
In-vehicle tunnel measuring device. According to claim 1,
The height adjusting unit includes a lower part having a fixed position and an upper part coupled to the lower part and moving up and down on the lower part,
Characterized in that a stretchable structure is interposed between the lower part and the upper part,
In-vehicle tunnel measuring device. According to claim 1,
The contact part contacts the inner wall of the tunnel before the explorer,
Characterized in that the height of the probe is lower than the height of the contact,
In-vehicle tunnel measuring device.
delete According to claim 1,
the contact part,
a support coupled to the frame; and
Including a wheel coupled to the support,
Characterized in that the buffer unit is built into the support,
In-vehicle tunnel measuring device. According to claim 7,
A light emitting unit is coupled to the wheel,
In-vehicle tunnel measuring device. According to claim 1,
The house is characterized in that the angle can be adjusted with respect to the support,
In-vehicle tunnel measuring device.

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