CN219495206U - Tunnel section detector and tunnel vertical section positioning mechanism thereof - Google Patents

Abstract

The utility model discloses a tunnel section detector and a tunnel vertical section positioning mechanism thereof, belonging to the field of tunnel lining detection. The section positioning mechanism comprises an external laser range finder arranged on the side part of the turret support and an angle sensor arranged on the horizontal rotating mechanism. The laser beam of external laser range finder is horizontal to be penetrated for measure its distance that reaches tunnel one side wall, and angle sensor is used for detecting external laser range finder's rotation angle, and external laser range finder and angle sensor all are connected with the controller, are used for uploading the detected data in real time, and the controller accomplishes the location of tunnel vertical section according to the detected data. According to the utility model, the external laser range finder and the angle sensor are additionally arranged on the conventional tunnel section detector, so that the rotation angle from the initial position to the vertical section can be accurately obtained, the vertical section position of the tunnel can be simply and conveniently obtained, the section positioning function is added for the conventional tunnel section detector, and the accuracy of the detection result of the tunnel section detector is ensured.

Description

Tunnel section detector and tunnel vertical section positioning mechanism thereof

Technical Field

The utility model relates to the field of tunnel lining detection, in particular to a tunnel section detector and a tunnel vertical section positioning mechanism thereof.

Background

In order to detect whether the tunnel lining has deformation or not and prevent serious safety accidents, the tunnel in the construction period and the operation period needs to be regularly subjected to lining section measurement. The measuring instrument mainly adopted at present is a laser tunnel section detector, such as a laser tunnel section detector disclosed in the prior art CN 201820712709.8. The conventional laser tunnel section detector collects distance data from the instrument to the lining along the circumferential direction of the lining through a laser ranging function and records ranging points, then a computer software can be used for generating lining contour lines from the collected data, the generated lining contour lines are compared with standard sections in a tunnel design file, and whether the lining has obvious deformation or not is judged.

However, in the current tunnel section data acquisition process, there is a relatively plagued problem that before the data is acquired by the section meter, the orientation of the laser distance meter needs to be adjusted to the direction vertical to the tunnel axis, namely, the vertical section of the tunnel is determined, so that the laser distance meter can accurately acquire the data along the circumferential direction of the tunnel, if the vertical section cannot be accurately positioned, the measured section can be larger than the actual section, and the comparison and judgment result is affected. The existing method for determining the vertical section of the tunnel comprises the steps of total station instrument hole external leading points, positioning by means of the side wall of an overhaul channel in the tunnel or a curb marking line and the like. The method for introducing points outside the total station hole has high precision, but the set reference points and the set turning points are easily destroyed on the tunnel construction site, and the manual error is large when the turning points are more, so that the method is time-consuming and labor-consuming and has low efficiency. The method for positioning the side wall of the overhaul channel or the road edge marking in the tunnel is convenient to implement, but has low precision, is difficult to realize accurate positioning, and affects the measurement result.

Therefore, the conventional tunnel vertical section positioning method still has inconvenience and defects, and further improvement is needed. How can establish a new tunnel section detector and tunnel vertical section positioning mechanism thereof, make it through increasing external laser range finder and angle sensor on original tunnel section detector basis, can simply convenient realization tunnel vertical section's location, ensure tunnel section detector testing result's precision, simple structure, the effect is showing, becomes the urgent needs improvement's of current industry target.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a tunnel vertical section positioning mechanism based on a tunnel section detector, which can simply and conveniently realize the positioning of the tunnel vertical section by adding an external laser range finder and an angle sensor on the basis of the original tunnel section detector, ensure the accuracy of the detection result of the tunnel section detector, has a simple structure and obvious effect, thereby overcoming the defects of the conventional tunnel section detector and tunnel vertical section positioning method.

In order to solve the technical problems, the utility model provides a tunnel vertical section positioning mechanism based on a tunnel section detector, which comprises a laser section scanner, a turret bracket for mounting the laser section scanner, a horizontal rotating mechanism for driving the turret bracket to horizontally rotate, and a controller for controlling the laser section scanner and the horizontal rotating mechanism to act, wherein the side part of the turret bracket is provided with an external laser range finder, the laser beam of the external laser range finder is horizontally emitted and used for measuring the distance from the laser beam to a side wall of a tunnel, the horizontal rotating mechanism is provided with an angle sensor for acquiring the rotating angle of the turret bracket, the controller is used for controlling the horizontal rotating mechanism to rotate, acquiring the detection data of the external laser range finder and the angle sensor in real time, and positioning the tunnel vertical section is completed according to the detection data.

Further improvement, be equipped with two on the capstan head support external laser rangefinder, two external laser rangefinder is located respectively the both sides of laser section scanner, and the laser beam direction that its sent just is opposite to in same axial, be used for measuring respectively and reach the distance of corresponding tunnel side wall, two external laser rangefinder all with the controller is connected.

Further improved, the laser beam emitted by the external laser range finder is perpendicular to the laser beam emitted by the laser section scanner.

Further improvement, be equipped with the recess that is used for the joint on the side cover casing of capstan head support external laser rangefinder, the recess bottom is equipped with data transmission and receives the serial ports, the inner of data transmission receive the serial ports with the controller is connected, external laser rangefinder adopts the drum type casing, the outer end of drum type casing is equipped with laser rangefinder unit, its inner be equipped with data transmission emission serial ports that data transmission receive the serial ports to be connected, be used for with the data transmission that laser rangefinder unit obtained arrives in the controller.

Further improved, a plurality of elastic bulges are arranged on the outer side of the inner end of the cylindrical shell, and a plurality of concave points matched with the elastic bulges are arranged on the inner wall of the groove on the side cover shell.

Further improved, the angle sensor is a steering angle sensor, and an angle measuring wheel of the steering angle sensor is arranged on the periphery of an output shaft of an electric rotor of the horizontal rotating mechanism, is used for collecting the rotating angle of the turret support and is uploaded to the controller.

Further improved, the tunnel section detector further comprises a fixed support, the base of the horizontal rotating mechanism is fixed on the fixed support, and a circumferential angle dial is arranged on the periphery of the base of the horizontal rotating mechanism.

As a further improvement of the utility model, the utility model also provides a tunnel section detector, which comprises the tunnel vertical section positioning mechanism, so that the tunnel section detector has a vertical section positioning function before tunnel section detection, and the accuracy of the detection result of the tunnel section detector is ensured.

With such a design, the utility model has at least the following advantages:

1. according to the tunnel vertical section positioning mechanism, the external laser range finders are additionally arranged on the side cover shell of the conventional tunnel section detector, the angle sensors are additionally arranged on the electric rotor of the horizontal rotating mechanism, the data acquisition of the external laser range finders and the angle sensors is performed through the controller, the principle that the external laser range finders vertically reach the side wall of the tunnel to be the minimum distance or the principle that the length of a connecting line perpendicular to two parallel lines is the minimum is utilized, the tunnel vertical section can be accurately positioned, the rotation angle from the initial position of the tunnel section detector to the vertical section can be accurately positioned by utilizing the angle synchronous monitoring of the angle sensors, the tunnel vertical section position can be simply, conveniently and accurately obtained, the section positioning function is added for the conventional tunnel section detector, and the accuracy of the detection result of the tunnel section detector is ensured. And the positioning efficiency is high, and the detection time of the whole section is saved.

2. The external laser range finder can be simply and conveniently installed and fixed on the side cover shell through the transformation of the side cover shell, and the structure is simple and the operation is convenient.

Drawings

The foregoing is merely an overview of the present utility model, and the present utility model is further described in detail below with reference to the accompanying drawings and detailed description.

FIG. 1 is a schematic diagram of the overall structure of the tunnel section detector of the present utility model.

Fig. 2 is an enlarged view of a partial structure of the tunnel section detector of the present utility model.

Fig. 3 is a schematic diagram of the internal structure of the tunnel section detector of the present utility model.

Fig. 4 and 5 are schematic perspective views of different angles of an external laser range finder in the tunnel vertical section positioning mechanism of the present utility model.

Fig. 6 is a schematic diagram of an end structure of an externally connected laser rangefinder (in which an inner structure of an elastic protrusion is shown) in the tunnel vertical section positioning mechanism of the present utility model.

Fig. 7 is a schematic structural view of an external laser range finder mounting groove in the tunnel vertical section positioning mechanism of the present utility model.

Fig. 8 is a schematic diagram of the installation structure of the electric rotor and the angle sensor in the tunnel vertical section positioning mechanism of the present utility model.

Wherein, 1, fixing a bracket; 2. a horizontal rotation mechanism; 21. an electric rotor; 22. a circumferential angle dial; 3. a turret support; 31. a central column; 32. a side plate; 33. a side cover housing; 331. a groove; 332. a data transmission and reception serial port; 333. pits; 4. a laser section scanner; 5. a controller; 6. a power supply; WIFI signal transmitter; 8. externally connecting a laser range finder; 81. a data transmission transmitting serial port; 82. an elastic protrusion; 9. externally connecting a laser range finder; 10. an angle sensor.

Detailed Description

The tunnel vertical section positioning mechanism is an improvement on the conventional tunnel section detector, so that the positioning function of the tunnel vertical section is added on the basis of the original detection function, and a more accurate lining contour line is provided for deformation monitoring of the tunnel lining section, so that the tunnel lining detection result is more accurate and reliable. Specific examples are as follows.

Referring to fig. 1 and 2, the whole structure of the tunnel section detector of this embodiment is the same as the structure of the laser tunnel section detector disclosed in the prior art CN201820712709.8, and the tunnel vertical section positioning mechanism is based on the improvement of this structure, and of course, the laser tunnel section detectors of other structures may be improved according to practical situations.

The tunnel section detector in this embodiment comprises a fixed support 1, a horizontal rotation mechanism 2 arranged on the fixed support 1, a turret support 3 arranged on the upper part of the horizontal rotation mechanism 2, a laser section scanner 4 arranged on the turret support 3, and a controller 5 for controlling the actions of the laser section scanner 4 and the horizontal rotation mechanism 2. Namely, the horizontal rotating mechanism 2 drives the turret support 3 to complete rotation in the horizontal direction under the action of the controller 5, the laser section scanner 4 achieves circumferential annular rotation under the action of the controller 5, circumferential distance collection of tunnel lining is completed, and finally a tunnel lining contour line is formed.

The turret support 3 comprises a central column 31, two side plates 32 and two side cap housings 33. Two side plates 32 are fixedly connected to the central column 31 and are used for mounting the laser section scanner 4. The two side cover cases 33 are detachably provided on the two side plates 32, respectively. The cavity formed between the side housing shell 33 and the side plate 32 is used for mounting the controller 5, the power supply 6 and the WIFI signal transmitter 7, as shown in fig. 3. Wherein, the power supply 6 is a general lithium battery. The WIFI signal transmitter 7 is network equipment capable of establishing a WIFI hot spot and is used for being connected with wireless control equipment matched with the section instrument.

The improvement of the embodiment is that an external laser range finder 8 is arranged on a side cover shell 33 of the turret support 3. The laser beam of the external laser range finder 8 is horizontally emitted and used for measuring the horizontal distance of the laser beam reaching a side wall of the tunnel. And the horizontal rotating mechanism 2 is also provided with an angle sensor 10 for acquiring the rotating angle of the turret support 3. When the section is positioned, the controller 5 controls the horizontal rotating mechanism 2 to rotate, so as to drive the turret support 3 and the external laser range finder 8 to rotate, meanwhile, the controller 5 collects distance data detected by the external laser range finder 8 and rotation angle data detected by the angle sensor 10 in real time, starting at an initial angle of 0 degree, only rotating by 180 degrees, and the rotation angle surface corresponding to the obtained minimum distance data is the vertical section of the tunnel, namely the positioning of the vertical section of the tunnel is completed.

And after the vertical section of the tunnel is obtained, the controller 5 controls the horizontal rotating mechanism 2 to rotate by a rotating angle a corresponding to the minimum distance data, namely the vertical section position of the tunnel, and then the laser section scanner 4 can be started after the rotating angle b or 180-b is continued according to the included angle b between the laser beam emitted by the external laser range finder 8 and the laser beam emitted by the laser section scanner 4, so that the laser detection of the lining section of the tunnel is completed.

In a preferred embodiment, the turret support 3 is further provided with another external laser rangefinder 9 opposite to the external laser rangefinder 8, the two external laser rangefinders 8 and 9 are respectively located at two sides of the laser section scanner 4, and the directions of the laser beams emitted by the external laser rangefinders are just opposite, and the laser beams are respectively used for measuring the distance reaching the corresponding tunnel side wall in the same axial direction, and the two external laser rangefinders 8 and 9 are both connected with the controller 5. The sum of the distances obtained by the two external laser rangefinders 8 and 9 is the distance between the two opposite side walls of the tunnel, and the rotation angle surface corresponding to the minimum value of the sum of the distances obtained by the two external laser rangefinders 8 and 9 is the vertical section of the tunnel, so that the positioning of the vertical section of the tunnel can be more accurately completed.

Preferably, the laser beam axial direction emitted by the external laser range finders 8 and 9 is vertical to the laser beam axial direction emitted by the laser section scanner 4, so that after the vertical section positioning of the tunnel is conveniently completed, the laser detection of the lining section of the tunnel can be started only by horizontally rotating the laser section scanner 4 by 90 degrees, and the method is simple and convenient and easy to operate.

Specifically, referring to fig. 4 to 7, a groove 331 for clamping the external laser rangefinder 8 is provided on the side cover housing 33 of the turret support 3, a data transmission receiving serial port 332 is provided at the bottom of the groove 331, and the inner end of the data transmission receiving serial port 332 is connected with the controller 5. The external laser range finder 8 adopts a cylindrical shell structure. The outer end of the cylindrical shell is provided with a laser ranging unit, and the inner end of the cylindrical shell is provided with a data transmission and transmission serial port 81 connected with the data transmission and reception serial port 332, so that data obtained by the laser ranging unit are transmitted to the controller 5.

And, a plurality of elastic protrusions 82 are arranged on the outer side of the inner end of the cylindrical shell, and the elastic protrusions 82 can stretch up and down under the action of a pressure spring as shown in fig. 6. The inner wall of the recess 331 on the side cover housing of the turret support 3 is provided with a plurality of concave points 333 matching with the elastic protrusions 82. The external laser rangefinder 8 can be mounted on the side cover 33 of the turret support 3 through the cooperation of the elastic protrusions 82 and the pits 333, and the method is simple and convenient. In addition, the structure of the external laser rangefinder 9 and the connection structure thereof with the turret support 3 are the same as the structure of the external laser rangefinder 8 and the connection structure thereof with the turret support 3.

The angle sensor 10 in this embodiment is a steering angle sensor, and an angle measuring wheel of the steering angle sensor is disposed on the periphery of an output shaft of the electric rotor 21 of the horizontal rotation mechanism 2, as shown in fig. 8, and is used for collecting the rotation angle of the turret support 3, and uploading the rotation angle to the controller 5.

In addition, the circumference of the base of the horizontal rotation mechanism 2 is also provided with a circumferential angle dial 22 for referencing the rotation angle of the turret support 3, and the rotation of the horizontal rotation mechanism 2 can be realized manually after the vertical section of the tunnel is positioned, so that the laser section scanner 4 is started to finish the laser scanning of the lining section of the tunnel.

According to the tunnel vertical section positioning mechanism, the external laser range finders are additionally arranged on the side cover shell of the conventional tunnel section detector, the angle sensors are additionally arranged on the electric rotor of the horizontal rotating mechanism, the data acquisition of the external laser range finders and the angle sensors is performed through the controller, the principle that the external laser range finders vertically reach the side wall of the tunnel to be the minimum distance or the principle that the length of a connecting line perpendicular to two parallel lines is the minimum is utilized, the tunnel vertical section can be accurately positioned, the rotation angle from the initial position of the tunnel section detector to the vertical section can be accurately positioned by utilizing the angle synchronous monitoring of the angle sensors, the tunnel vertical section position can be simply, conveniently and accurately obtained, the section positioning function is added for the conventional tunnel section detector, and the accuracy of the detection result of the tunnel section detector is ensured. And the external laser range finder is simple and convenient to install on the side cover shell, high in positioning efficiency and capable of saving the detection time of the whole section.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

The above description is only of the preferred embodiments of the present utility model, and is not intended to limit the utility model in any way, and some simple modifications, equivalent variations or modifications can be made by those skilled in the art using the teachings disclosed herein, which fall within the scope of the present utility model.

Claims (8)

1. The utility model provides a tunnel vertical section positioning mechanism based on tunnel section detector, tunnel section detector includes laser section scanner and is used for installing the turret support of laser section scanner, and drives the horizontal rotary mechanism of turret support horizontal rotation, control the controller of laser section scanner and horizontal rotary mechanism action, its characterized in that, the lateral part of turret support is equipped with external laser rangefinder, the laser beam level of external laser rangefinder is penetrated for measure its distance that reaches a tunnel side wall, be equipped with on the horizontal rotary mechanism and be used for gathering turret support rotation angle's angle sensor, the controller is used for controlling horizontal rotary mechanism is rotatory, and the real-time acquisition external laser rangefinder with angle sensor's detection data, accomplishes tunnel vertical section's location according to the detection data.

2. The tunnel vertical section positioning mechanism according to claim 1, wherein two external laser rangefinders are arranged on the turret support, the two external laser rangefinders are respectively positioned at two sides of the laser section scanner, the directions of laser beams emitted by the external laser rangefinders are just opposite, and the two external laser rangefinders are respectively used for measuring the distance reaching the corresponding tunnel side wall in the same axial direction, and the two external laser rangefinders are connected with the controller.

3. The tunnel vertical section positioning mechanism of claim 1, wherein the laser beam emitted by the external laser range finder is axially perpendicular to the laser beam emitted by the laser section scanner.

4. The tunnel vertical section positioning mechanism according to any one of claims 1 to 3, wherein a groove for clamping the external laser range finder is formed in a side cover shell of the turret support, a data transmission receiving serial port is formed in the bottom of the groove, the inner end of the data transmission receiving serial port is connected with the controller, the external laser range finder adopts a cylindrical shell, a laser range finding unit is arranged at the outer end of the cylindrical shell, and a data transmission transmitting serial port connected with the data transmission receiving serial port is formed in the inner end of the cylindrical shell and used for transmitting data obtained by the laser range finding unit into the controller.

5. The tunnel vertical section positioning mechanism according to claim 4, wherein a plurality of elastic protrusions are arranged on the outer side of the inner end of the cylindrical shell, and a plurality of concave points matched with the elastic protrusions are arranged on the inner wall of the groove on the side cover shell.

6. The tunnel vertical section positioning mechanism according to claim 1, wherein the angle sensor is a steering angle sensor, and an angle measuring wheel of the steering angle sensor is arranged on the periphery of an output shaft of an electric rotor of the horizontal rotation mechanism, and is used for collecting the rotation angle of the turret support and uploading the rotation angle to the controller.

7. The tunnel vertical section positioning mechanism according to claim 1, wherein the tunnel section detector further comprises a fixed bracket, the base of the horizontal rotation mechanism is fixed on the fixed bracket, and a circumferential angle dial is provided on the outer periphery of the base of the horizontal rotation mechanism.

8. A tunnel section detector comprising the tunnel vertical section positioning mechanism according to any one of claims 1 to 7.