Tunnel radar monitoring device and detection method

Abstract

The application provides a tunnel radar monitoring device and a detection method, and belongs to the technical field of radar monitoring. The tunnel radar monitoring device comprises a base, two mutually parallel sliding rods arranged at the same horizontal height on the top of the base, the sliding rods are arranged to move along the length direction, a telescopic rod is hingedly arranged on each of the two sliding rods, the axis of the hinge is perpendicular to the sliding rod, and the end of the telescopic rod is provided with a radar. A chassis is used for mounting and moving the base, and the base is arranged to move along the height direction of the chassis. The tunnel radar detection method is realized by using the above-mentioned tunnel radar monitoring device, and comprises the following steps: first step: adjusting the position of the chassis; second step: adjusting the position of the hinge shaft of the telescopic rod; third step: adjusting the height position of the base; fourth step: adjusting the angle of the telescopic rod; and fifth step: scanning along the extension direction of the tunnel. According to the scheme, the radar monitoring of both sides of the tunnel can be realized in tunnels of various shapes, the operation is simpler, and the monitoring efficiency is higher.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of radar monitoring, and particularly relates to a tunnel radar monitoring device and a detection method. BACKGROUND

[0002] The radar monitoring technology for tunnels is to detect geological targets by detecting signals reflected by underground geological bodies or signals transmitted through geological bodies with the help of high-frequency short-pulse electromagnetic waves emitted by a directional transmitting antenna.

[0003] Tunnels can be divided into traffic tunnels, water tunnels, municipal tunnels and mine tunnels according to their purposes. Different tunnels and tunnels with different traffic volumes have certain differences in structure. For example, tunnels with small traffic volume and some subway tunnels usually have only a single lane, and the cross section of such tunnels is mostly a single circle. Common high-speed traffic tunnels are usually double-circle tunnels. A single-circle tunnel refers to a circular structure with a single point as the center of the cross section, while a double-circle tunnel has a larger width, and the centers of the arc inner walls on both sides of the tunnel do not coincide but are arranged at intervals along the same horizontal plane.

[0004] Most existing tunnel radar monitoring devices can adapt to the curvature of the tunnel inner wall by setting a rotating support, so that the radar is attached to the tunnel inner wall to meet the monitoring needs at different positions. For example, the invention patent with the application number CN202210732689.1 discloses a tunnel wall rear radar detection vehicle, which is provided with coaxially swingable first and second telescopic rods. The first and second telescopic rods adjust the position of the radar at the ends thereof by swinging, so as to adapt to monitoring at different positions. Moreover, because the first and second telescopic rods are provided at the same time, the device can simultaneously monitor the inner walls on both sides of the tunnel to improve the monitoring efficiency. However, this scheme is only applicable to tunnels with a single circle structure. If it is used in a double-circle tunnel, the swinging centers of the two telescopic rods cannot coincide with the centers of the two circles of the double-circle tunnel at the same time. Therefore, the length of the telescopic rod needs to be adjusted constantly during use to ensure that the radar maintains a consistent distance from the tunnel inner wall at different heights, thereby ensuring the accuracy of the monitoring structure. However, frequent adjustment of the length of the telescopic rod will make the monitoring process more tedious and reduce the monitoring efficiency. SUMMARY

[0005] To solve the problems of the prior art, the present application provides a tunnel radar monitoring device and a detection method, which can simultaneously monitor the two sides of the tunnel in tunnels of various shapes, is simpler to operate, and has higher monitoring efficiency.

[0006] To achieve the purpose of the present application, the following scheme is adopted:

[0007] A tunnel radar monitoring device, comprising: a base and a chassis.

[0008] The base top is provided with two mutually parallel sliding rods at the same horizontal height, the sliding rods are movably arranged along the length direction, and the sliding rods are hingedly provided with telescopic rods, the hinged axis is perpendicular to the sliding rod, and the telescopic rod is provided with a radar at the end.

[0009] The chassis is used for mounting and moving the base, and the base is movably arranged along the height direction of the chassis.

[0010] A tunnel radar detection method is realized by using the tunnel radar monitoring device, and comprises the following steps:

[0011] Step 1: adjust the position of the chassis to be in the middle of the tunnel width direction;

[0012] Step 2: determine the structure of the tunnel according to the tunnel design drawing, and adjust the position of the hinged axis of the telescopic rod in the tunnel width direction, so that the hinged axis of the telescopic rod is in the same vertical plane as the axis of the tunnel;

[0013] Step 3: adjust the height position of the base, so that the hinged axis of the telescopic rod is in the same horizontal plane as the axis of the tunnel;

[0014] Step 4: extend the radar by using the telescopic rod, so that the inner wall of the tunnel enters the scanning range of the radar, and the angle of the telescopic rod is adjusted;

[0015] Step 5: move the chassis along the extension direction of the tunnel, and continuously scan by using the radar during the movement.

[0016] The beneficial effects of the present application are that the radar is installed by using the telescopic rod to adapt to different radii of the tunnel, the horizontal and height positions of the hinged axis of the telescopic rod are adjustable, the hinged axis can coincide with the axis of the tunnel, so that only the angle of the telescopic rod needs to be adjusted when monitoring the different height positions of the inner wall of the tunnel, and the monitoring efficiency is higher; and the two telescopic rods are arranged on the movably arranged sliding rods, and the two telescopic rods can be used to monitor the two sides of the tunnel with different widths at the same time. BRIEF DESCRIPTION OF DRAWINGS

[0017] The drawings described herein are only for illustrating selected embodiments, not all possible embodiments, and are not intended to limit the scope of the present application.

[0018] Figure 1 The overall structure schematic diagram of the preferred scheme of the present application is shown.

[0019] Figure 2 The overall structure schematic diagram of the preferred scheme of the present application is shown. Figure 1 The partial enlarged view of A in the middle.

[0020] Figure 3The overall sectional view of the preferred embodiment of the present application is shown.

[0021] Figure 4 The structural sectional view of the connection part of the telescopic rod and the radar is shown

[0022] Figure 5 The partial sectional view of the connection part of the wedge-shaped block and the base is shown.

[0023] Figure 6 The end view of the present application when monitoring a single-centered tunnel is shown.

[0024] Figure 7 The state diagram of the present application when monitoring a double-centered tunnel is shown.

[0025] Figure 8 The end view of the present application when monitoring a double-centered tunnel is shown.

[0026] Markings in the figure: base-1, guide rail-11, driving motor-12, sliding rod-2, rack-21, circular arc plate-22, telescopic rod-3, connecting rod-31, telescopic spring-32, worm-33, adjusting motor-34, mounting groove-35, radar-4, connecting spring-41, chassis-5, through hole-51, strip-shaped groove-52, wedge-shaped block-6, protruding block-61, spring plate-62, bidirectional screw-7. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the embodiments of the present application are described in detail below in combination with the drawings, but the embodiments described in the present application are part of the embodiments of the present application, not all the embodiments.

[0028] Embodiment 1, as shown in Figure 1 , Figure 3 , a tunnel radar monitoring device, comprising: a base 1, a telescopic rod 3, a radar 4 and a chassis 5.

[0029] The top of the base 1 is provided with two mutually parallel sliding rods 2 at the same horizontal height, the sliding rods 2 are movably arranged along the length direction, and the telescopic rods 3 are hingedly arranged on the two sliding rods 2, the axis of the hinge is perpendicular to the sliding rods 2, and the telescopic rods 3 are provided with the radar 4 at the end, specifically, the telescopic rods 3 are hydraulic telescopic cylinders or threaded telescopic structures.

[0030] The chassis 5 is used for mounting and moving the base 1, and the base 1 is movably arranged along the height direction of the chassis 5.

[0031] As shown in Figure 6As shown, when monitoring a single-center tunnel, the hinge axis of the telescopic rod 3 is set along the extension direction of the tunnel; by moving the two sliding rods 2, the hinge axes of the two telescopic rods 3 are set along the same axis; the base 5 is adjusted along the tunnel width direction so that the hinge axis of the telescopic rod 3 is in the same vertical plane as the center of the tunnel; then the height of the base 1 on the base 5 is adjusted so that the hinge axis of the telescopic rod 3 is in the same horizontal plane as the center of the tunnel; at this point, the hinge axes of both telescopic rods 3 coincide with the center of the tunnel; during monitoring, only the swing angle of the telescopic rod 3 around the hinge axis needs to be adjusted, and the two radars 4 can simultaneously scan and monitor the positions at different heights on both sides of the tunnel inner wall.

[0032] like Figure 7 , Figure 8 As shown, when monitoring a double-center tunnel, the hinge axis of the telescopic rod 3 is also set along the extension direction of the tunnel; by moving the two sliding rods 2, the hinge axes of the two telescopic rods 3 are respectively aligned with the two centers of the tunnel in the same vertical plane; the height of the base 1 on the chassis 5 is adjusted so that the hinge axes of the two telescopic rods 3 are aligned with the two centers of the tunnel in the same horizontal plane; at this point, the hinge axes of the two telescopic rods 3 coincide with the two centers of the tunnel; during monitoring, by adjusting the swing angle of the telescopic rods 3 around the hinge axis, the two radars 4 can simultaneously scan and monitor the positions at different heights on both sides of the tunnel inner wall.

[0033] When aligning the axis of telescopic rod 3 with the tunnel axis, the tunnel design drawings can be used to measure the tunnel axis position based on the side and bottom of the tunnel. In order to ensure the maximum passage width, the tunnel axis must be located above the tunnel surface during the design process, so that the maximum width of the tunnel is located on the tunnel surface.

[0034] By moving the base 1 along the extension direction of the tunnel via the chassis 5, the purpose of monitoring the entire tunnel can be achieved. With the direction of travel of the chassis 5 as a reference, it can be understood that the sliding rod 2 is set along the width direction of the base 1, while the hinge axis of the telescopic rod 3 is parallel to the length direction of the base 1. During monitoring, the width direction of the base 1 is aligned with the width direction of the tunnel.

[0035] As a preferred option, chassis 5 can be designed as either unpowered or powered. When the unpowered design is adopted, it can be pushed manually or mounted on a vehicle for movement. When the powered design is adopted, a vehicle can be used directly as chassis 5, or chassis 5 can be designed in the form of a conventional vehicle.

[0036] Preferred, such as Figure 2 , Figure 4As shown, the end of the telescopic rod 3 is provided with a connecting rod 31 along the length direction, and a telescopic spring 32 is arranged between the bottom of the connecting rod 31 and the end of the telescopic rod 3, so that the connecting rod 31 has the ability to elastically move along the length direction of the telescopic rod 3. The top of the connecting rod 31 is connected to the radar 4 through a ball hinge structure, and the radar 4 and the connecting rod 31 are provided with a plurality of connecting springs 41 along the circumference. The connecting springs 41 are in a state of being stretched or compressed at the same time, for making the radar 4 perpendicular to the connecting rod 31. The above structure makes the radar 4 and the telescopic rod 3 present an active connection state, and through the ball hinge structure, the telescopic spring 32 and the connecting spring 41, the radar 4 can be buffered and avoided in time when encountering obstacles, so as to avoid damage to the radar 4.

[0037] Preferably, as shown in Figure 1 , Figure 3 The top surface of the base 1 is provided with a pair of parallel guide rails 11, and the two sliding rods 2 are respectively arranged on the two guide rails 11. The sliding rods 2 are parallel to the guide rails 11, and the opposite sides of the two sliding rods 2 are provided with racks 21 parallel to the guide rails 11. The teeth of the racks 21 are oppositely arranged. The base 1 is provided with a driving motor 12, and the main shaft of the driving motor 12 is coaxially provided with a gear. The gear is meshed with the two racks 21 on both sides. Specifically, the driving motor 12 and the gear are arranged between the two racks 21. When the driving motor 12 drives the gear to rotate, the two sliding rods 2 can be driven to move along the guide rails 11 at the same time, and the moving directions are opposite. The above scheme can quickly adjust the position of the telescopic rod 3, so that the hinge axis of the telescopic rod 3 is quickly aligned with the axis of the tunnel.

[0038] As a further preferred scheme, when the hinge axes of the two telescopic rods 3 coincide, the axis of the driving motor 12 is in the same vertical plane as the hinge axes of the two telescopic rods 3, and the driving motor 12 is arranged at the middle position in the width direction of the base 1, so as to ensure the balance of the counterweights on both sides of the base 1.

[0039] Preferably, as shown in Figure 1As shown, each of the two sliding rods 2 has an arc plate 22 at its top, either opposite or in the same direction. The arc plate 22's axis is coaxial with the hinge axis of the telescopic rod 3. One side of the arc plate 22 is parallel to the sliding rod 2, and the other side is located above the corresponding sliding rod 2. The included angle between the two sides of the arc plate 22 is greater than 90 degrees. The outer arc of the arc plate 22 has teeth of a worm gear structure. A worm 33, which meshes with the teeth, is rotatably mounted on the telescopic rod 3. The axis of the worm 33 is set along the tangent direction of the arc plate 22. Because the arc plate 22 is fixedly mounted on the sliding rod 2, while the telescopic rod... 3 is hinged to the sliding rod 2, and the worm 33 meshes with the teeth of the worm wheel structure. Therefore, by rotating the worm 33, it can move along the arc trajectory of the arc plate 22, thereby driving the telescopic rod 3 to swing along the hinge axis. Furthermore, the transmission structure of the worm wheel and worm 33 has a self-locking function. After the position of the telescopic rod 3 is adjusted, stopping the rotation of the worm 33 locks the position of the telescopic rod 3, preventing it from swinging on its own. This also reduces the need for a separate angle locking mechanism for the telescopic rod 3, simplifying the overall structure of the equipment. The above scheme allows the two telescopic rods 3 to adjust their angle independently, such as... Figure 7 , Figure 8 As shown, the radar 4 on the two telescopic poles 3 of this device can simultaneously monitor different height positions on both sides of the tunnel.

[0040] Preferred, such as Figure 1 , Figure 4 As shown, the telescopic rod 3 is equipped with an adjusting motor 34, and the worm gear 33 is coaxially mounted on the main shaft of the adjusting motor 34, so that the adjusting motor 34 can drive the worm gear 33 to rotate; more preferably, the lower end of the telescopic rod 3 is provided with a mounting groove 35, and the arc plate 22 and the worm gear 33 are both located between the mounting grooves 35.

[0041] Preferred, such as Figure 1 , Figure 3 and Figure 5 As shown, a through hole 51 for mounting the base 1 is vertically opened in the middle of the chassis 5. The base 1 is movable along the axis of the through hole 51. A strip groove 52 is opened on the side wall opposite to the through hole 51. A wedge block 6 is provided in each of the strip grooves 52. The inclined surface of the wedge block 6 is inclined towards the upper part of the middle of the base 1 and abuts against the bottom edge of the base 1. The wedge block 6 is slidably set in the strip groove 52. By moving the wedge block 6, the base 1 can be moved by using its inclined surface, thereby adjusting the height position of the base 1 on the chassis 5. In this solution, the through hole 51 is set on the chassis 5 to mount the base 1, which allows the base 1 to have a lower monitoring position to adapt to a larger height range of the tunnel axis.

[0042] Preferably, the cross-section of the strip groove 52 is a cross-shaped structure, and the cross-section of the wedge block 6 matches the cross-section of the strip groove 52 to ensure that the installation structure of the wedge block 6 has sufficient support force to support the base 1.

[0043] Preferably, as shown in Figure 5 Preferably, as shown in

[0044] Preferably, as shown in Figure 3 Preferably, as shown in Figure 5 Preferably, as shown in

[0045] Preferably, as shown in Figure 3 Preferably, as shown in

[0046] Preferably, as shown in

[0047] Embodiment 2, a tunnel radar detection method, which is realized by using the tunnel radar monitoring device described in embodiment 1, including the following steps:

[0048] Step 1: Adjust the position of the base plate 5 to the middle of the tunnel width direction, this process can be measured by a tape measure or reference design drawings to determine the midpoint position of the tunnel width, at this point, the base 1 is in the middle of the base plate 5 width position by default;

[0049] Second step: according to the tunnel design drawings to determine the structure of the tunnel, and adjust the hinge axis of the telescopic rod 3 in the direction of the width of the tunnel, so that the hinge axis of the telescopic rod 3 and the axis of the tunnel are in the same vertical plane;

[0050] Third step: adjust the height position of the base 1, so that the hinge axis of the telescopic rod 3 and the axis of the tunnel are in the same horizontal plane;

[0051] Fourth step: use the telescopic rod 3 to extend the radar 4, so that the inner wall of the tunnel enters the scanning range of the radar 4, and adjust the angle of the telescopic rod 3;

[0052] Fifth step: move the chassis 5 along the extension direction of the tunnel, and continuously scan using the radar 4 during the movement.

[0053] The above only describes the preferred embodiments of the present application, and does not mean the only or limit the present application. Those skilled in the art should understand that various changes or equivalent replacements made to the present application without departing from the scope of the present application, all belong to the scope of protection of the present application.

Claims

1. A tunnel radar monitoring device, characterized in that, include: The base (1) has two parallel sliding rods (2) at the same horizontal height on its top. The sliding rods (2) are both movable along their own length direction. The two sliding rods (2) are hinged with telescopic rods (3). The axis of the hinge is perpendicular to the sliding rods (2). The ends of the telescopic rods (3) are respectively equipped with radar (4). The chassis (5) is used to install and move the base (1), and the base (1) is moved along the height direction of the chassis (5); The top surface of the base (1) is provided with a pair of parallel guide rails (11). The guide rails (11) are arranged along the width of the tunnel. Two sliding rods (2) are slidably mounted on the two guide rails (11). The sliding rods (2) are parallel to the guide rails (11). On the opposite side of the two sliding rods (2), there is a rack (21) parallel to the guide rails (11). The base (1) is provided with a drive motor (12). Its main shaft is coaxially equipped with gears. Both sides of the gear mesh with the two racks (21) at the same time.

2. The tunnel radar monitoring device according to claim 1, characterized in that, A connecting rod (31) is inserted through the end of the telescopic rod (3) along the length direction, and a telescopic spring (32) is provided between the bottom of the connecting rod (31) and the end of the telescopic rod (3). The top of the connecting rod (31) is connected to the radar (4) through a ball joint structure, and multiple connecting springs (41) are provided around the circumference of the radar (4) and the connecting rod (31). The connecting springs (41) are in a state of simultaneous tension or compression.

3. The tunnel radar monitoring device according to claim 1, characterized in that, The top of each of the two sliding rods (2) is provided with an arc plate (22) at one of their opposite or opposite ends. The axis of the arc plate (22) is coaxial with the hinge axis of the telescopic rod (3). One side of the arc plate (22) is parallel to the sliding rod (2), and the other side is located above the corresponding sliding rod (2). The included angle between the two sides of the arc plate (22) is greater than 90 degrees. The outer arc wall of the arc plate (22) is provided with teeth of a worm gear structure. The telescopic rod (3) is provided with a worm (33) that meshes with the teeth. The axis of the worm (33) is set along the tangent direction of the arc plate (22).

4. The tunnel radar monitoring device according to claim 3, characterized in that, The telescopic rod (3) is equipped with an adjusting motor (34), and the worm gear (33) is coaxially mounted on the main shaft of the adjusting motor (34).

5. A tunnel radar monitoring device according to claim 1, characterized in that, The chassis (5) has a through hole (51) vertically opened in the middle for mounting the base (1). The base (1) is moved along the axis of the through hole (51). A strip groove (52) is opened on the side wall opposite to the through hole (51). A wedge block (6) is provided in each of the strip grooves (52). The inclined surface of the wedge block (6) is inclined towards the upper part of the middle of the base (1) and abuts against the bottom edge of the base (1). The wedge block (6) is slidably set in the strip groove (52).

6. A tunnel radar monitoring device according to claim 5, characterized in that, The lower end of the wedge block (6) is provided with a protrusion (61) facing the middle of the base (1). When the wedge block (6) moves to the far end of the strip groove (52), the protrusion (61) is supported on the bottom surface of the base (1).

7. A tunnel radar monitoring device according to claim 5, characterized in that, The top surface of each wedge block (6) is provided with a spring plate (62). When the inclined surface of the wedge block (6) abuts against the base (1), the end of the spring plate (62) is pressed against the top surface of the base (1). When the wedge block (6) moves to the far end of the strip groove (52), the spring plate (62) is located outside the base (1), and the bottom surface of the end of the spring plate (62) is still higher than the bottom surface of the base (1).

8. A tunnel radar monitoring device according to claim 5, characterized in that, The bottom of the chassis (5) is provided with a two-way lead screw (7), which has screws with opposite directions of rotation at both ends. The screws at both ends of the two-way lead screw (7) pass through two wedge blocks (6) respectively, and the midpoint of the two-way lead screw (7) is located in the middle of the two wedge blocks (6).

9. A tunnel radar detection method, characterized in that, The tunnel radar monitoring device according to any one of claims 1 to 8 is used, comprising the following steps: Step 1: Adjust the position of the chassis (5) so that it is in the middle of the tunnel width direction; Step 2: Determine the structure of the tunnel according to the tunnel design drawings, and adjust the position of the hinge axis of the telescopic rod (3) in the tunnel width direction so that the hinge axis of the telescopic rod (3) is in the same vertical plane as the tunnel axis. Step 3: Adjust the height of the base (1) so that the hinge axis of the telescopic rod (3) is on the same horizontal plane as the tunnel axis; Step 4: Extend the radar (4) using the telescopic rod (3) so that the tunnel wall enters the scanning range of the radar (4), and adjust the angle of the telescopic rod (3). Step 5: Move the chassis (5) along the extension direction of the tunnel and continuously scan with radar (4) during the movement.

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