Measuring point device for monitoring and measuring tunnel deformation

Abstract

The present invention discloses a measuring point device for monitoring and measuring tunnel deformation, comprising: a shell, which is used to be fixed on the side wall of the tunnel, and the top of the shell is an open structure; a baffle, which is covered at the opening on the top of the shell; a first driving device, which is connected to the baffle and can drive the baffle to move up and down; a pressure sensing device, which is arranged on the top of the baffle; an ultrasonic sensor, which is arranged in the shell; a second driving device, which is connected to the ultrasonic sensor and can drive the ultrasonic sensor to move up and down; a posture acquisition device, which is used to acquire the posture of the ultrasonic sensor and can transmit data to the background; a control device, which is arranged in the shell and is respectively connected to the first driving device, the pressure sensing device and the second driving device. The above structure can avoid the situation where the staff needs to clean the measuring point due to contamination, and is also conducive to avoiding the situation where the staff needs to re-establish the measuring point due to burying the measuring point.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel construction, and in particular to a measuring point device for monitoring and measuring tunnel deformation. Background Art

[0002] Tunnels are engineering structures buried in the ground and are a form of human use of underground space. During tunnel construction, due to the influence of excavation, stress will be redistributed, resulting in a certain amount of convergence and settlement deformation of the tunnel. Excessive deformation will cause the tunnel structure to become unstable and damaged, causing economic losses and casualties. Therefore, it is essential to monitor and measure the convergence and settlement deformation of the tunnel in real time throughout the tunnel construction process.

[0003] In the prior art, when monitoring and measuring tunnel deformation, optical distance measurement is usually used to measure the distance from the measuring station to the measuring point. The real-time coordinates of the measuring point are calculated based on the coordinates of the measuring station and the distance from the measuring station to the measuring point, so as to calculate the convergence deformation and settlement deformation of the tunnel, and then guide the construction. Therefore, it is necessary to set a prism at the measuring point for the above optical distance measurement. However, the process of shotcrete spraying during tunnel construction often contaminates the prism at the measuring point or even buries the prism at the measuring point, requiring the staff to clean the measuring point or re-establish the measuring point, which is time-consuming and labor-intensive, and will affect the effectiveness and guidance of the monitoring and measurement results. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a measuring point device for monitoring and measuring tunnel deformation, which can avoid the situation where the staff needs to clean the measuring point due to contamination of the measuring point, and is also conducive to avoiding the situation where the staff needs to re-establish the measuring point due to burial of the measuring point.

[0005] According to an embodiment of the present invention, a measuring point device for monitoring and measuring tunnel deformation includes: a shell, the shell is used to be fixed on the side wall of the tunnel, and the top of the shell is an open structure; a baffle, the baffle cover is arranged at the opening at the top of the shell; a first drive device, the first drive device is connected to the baffle and can drive the baffle to move up and down; a pressure sensing device, the pressure sensing device is arranged on the top of the baffle; an ultrasonic sensor, the ultrasonic sensor is arranged in the shell; a second drive device, the second drive device is connected to the ultrasonic sensor and can drive the ultrasonic sensor to move up and down; a posture acquisition device, the posture acquisition device is used to acquire the posture of the ultrasonic sensor and can transmit data to the background; a control device, the control device is arranged in the shell and is respectively connected to the first drive device, the pressure sensing device and the second drive device.

[0006] The measuring point device for monitoring and measuring tunnel deformation according to the embodiment of the present invention has at least the following beneficial effects: before monitoring and measuring tunnel deformation, the baffle is driven to move back to the shell by the first driving device, and the ultrasonic sensor is driven to move a preset distance by the second driving device so that the ultrasonic sensor extends out of the shell, so that the ultrasonic wave used for distance measurement is only propagated in the air, which is beneficial to improve the measurement accuracy. When monitoring tunnel deformation, since the distance from the measuring station to the measuring point is measured by ultrasonic distance measurement, it is possible to avoid the situation where the measuring point is contaminated and the staff needs to clean the measuring point. When the process of spraying concrete is implemented at the measuring point, concrete is sprayed onto the baffle. At this time, the pressure sensing device detects the external pressure, and the control device immediately controls the first driving device to drive the baffle toward The shell moves, and at the same time, the second driving device is controlled to drive the ultrasonic sensor to move a preset distance so that the ultrasonic sensor is retracted into the shell, thereby preventing the ultrasonic sensor from being buried in concrete. When the external pressure detected by the pressure sensing device tends to be stable, the process of spraying concrete at the measuring point is completed. At this time, the baffle is driven by the first driving device to move back to the shell to push up the unsolidified concrete layer, and at the same time, the ultrasonic sensor is driven by the second driving device to move a preset distance so that the ultrasonic sensor is re-extended from the shell. The posture acquisition device is used to acquire the posture of the ultrasonic sensor after it is re-extended from the shell and can transmit relevant data to the background, so as to correct the deviation of the measurement result caused by the change of posture of the ultrasonic sensor before and after the movement.

[0007] According to some embodiments of the present invention, a wireless transmission device for transmitting data to a background is disposed in the housing, and the posture acquisition device is connected to the wireless transmission device.

[0008] According to some embodiments of the present invention, the pressure sensing device is connected to the wireless transmission device.

[0009] According to some embodiments of the present invention, the first driving device includes a first driving motor and a screw lifting mechanism, the first driving motor and the screw lifting mechanism are arranged on the housing, the first driving motor is connected to the control device, the output shaft of the first driving motor is transmission-connected to the screw lifting mechanism, and the screw lifting mechanism is connected to the baffle.

[0010] According to some embodiments of the present invention, the second driving device includes a second driving motor, a threaded rod and a sleeve, the second driving motor is arranged in the shell, the second driving motor is connected to the control device, the output shaft of the second driving motor is connected to the threaded rod, so that the second driving motor can drive the threaded rod to rotate, the sleeve is sleeved on the threaded rod and threadedly connected to the threaded rod, a limiting structure for limiting the rotation of the sleeve is arranged in the shell, the ultrasonic sensor is arranged on the upper part of the sleeve, and the posture acquisition device is arranged on the sleeve or on the ultrasonic sensor.

[0011] According to some embodiments of the present invention, the limiting structure includes a limiting plane arranged on the side of the sleeve, and the limiting plane is in contact with the inner wall of the shell.

[0012] According to some embodiments of the present invention, the posture acquisition device is a gyroscope.

[0013] According to some embodiments of the present invention, a lithium battery for power supply is disposed in the housing.

[0014] According to some embodiments of the present invention, the area of ​​the orthographic projection of the baffle along its moving direction is much larger than the opening area of ​​the top of the shell.

[0015] According to some embodiments of the present invention, the pressure sensing device includes a resistance strain gauge laid on the upper surface of the baffle and a flexible protective layer laid on the upper surface of the resistance strain gauge.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 It is a schematic structural diagram of an ultrasonic sensor of a measuring point device for monitoring and measuring tunnel deformation according to an embodiment of the present invention being retracted into a housing;

[0019] Figure 2 yes Figure 1 A partial enlarged schematic diagram in the middle;

[0020] Figure 3 It is a schematic structural diagram of an ultrasonic sensor extending out of a housing of a measuring point device for monitoring and measuring tunnel deformation according to an embodiment of the present invention.

[0021] Reference numerals:

[0022] Shell 100, base plate 110, frame column 120, frame beam 130, baffle 200, pressure sensing device 210, resistance strain gauge 211, flexible protective layer 212, first drive device 300, first drive motor 310, screw lifting mechanism 320, ultrasonic sensor 400, second drive device 500, second drive motor 510, threaded rod 520, sleeve 530, posture acquisition device 600, control device 700, wireless transmission device 800, lithium battery 900. DETAILED DESCRIPTION

[0023] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0024] In the description of the present invention, it is necessary to understand that if it involves orientation description, the orientation or position relationship indicated by, for example, up, down, front, back, left, right, etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0025] In the description of the present invention, if the words such as several, greater than, less than, exceed, above, below, within, etc. appear, among which, several means one or more, more means more than two, greater than, less than, exceed, etc. are understood as not including the number itself, and above, below, within, etc. are understood as including the number itself.

[0026] In the description of the present invention, if the words "first", "second", etc. appear, they are only used to distinguish the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the sequence of the indicated technical features.

[0027] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0028] Reference Figures 1 to 3 The measuring point device for monitoring and measuring tunnel deformation according to an embodiment of the present invention includes a shell 100, a baffle 200, a first driving device 300, a pressure sensing device 210, an ultrasonic sensor 400, a second driving device 500, a posture acquisition device 600 and a control device 700.

[0029] The shell 100 is used to be fixed on the side wall of the tunnel. The top of the shell 100 is an open structure. The baffle 200 is covered at the opening at the top of the shell 100. The first driving device 300 is connected to the baffle 200 and can drive the baffle 200 to move up and down. The pressure sensing device 210 is arranged on the top of the baffle 200. The ultrasonic sensor 400 is arranged in the shell 100. The second driving device 500 is connected to the ultrasonic sensor 400 and can drive the ultrasonic sensor 400 to move up and down. The posture acquisition device 600 is used to collect the posture of the ultrasonic sensor 400 and can transmit data to the background. The control device 700 is arranged in the shell 100 and is respectively connected to the first driving device 300, the pressure sensing device 210 and the second driving device 500. Specifically, the first driving device 300, the pressure sensing device 210 and the second driving device 500 can be connected to the control device 700 by wire or by wireless. Among them, the control device 700 can be a PLC controller or other types of controllers, which are not limited here.

[0030] Before monitoring and measuring the deformation of the tunnel, the baffle 200 is driven to move back to the shell 100 by the first driving device 300, and the ultrasonic sensor 400 is driven to move a preset distance by the second driving device 500 so that the ultrasonic sensor 400 extends out of the shell 100, so that the ultrasonic wave used for distance measurement is only propagated in the air, which is beneficial to improve the measurement accuracy. When monitoring the deformation of the tunnel, since the distance from the measuring station to the measuring point is measured by ultrasonic distance measurement, it is possible to avoid the situation where the staff needs to clean the measuring point due to contamination of the measuring point. When the process of spraying concrete is implemented at the measuring point, the concrete is sprayed onto the baffle 200. At this time, the pressure sensing device 210 detects the external pressure, and the control device 700 immediately controls the first driving device 300 to drive the baffle 200 to move toward the shell 100, and controls the second driving device 50 0 drives the ultrasonic sensor 400 to move a preset distance so that the ultrasonic sensor 400 is retracted into the shell 100, thereby preventing the ultrasonic sensor 400 from being buried by concrete. When the external pressure detected by the pressure sensing device 210 tends to be stable, the process of spraying concrete at the measuring point is completed. At this time, the baffle 200 is driven by the first driving device 300 to move back to the shell 100 to push up the unsolidified concrete layer, and at the same time, the ultrasonic sensor 400 is driven by the second driving device 500 to move a preset distance so that the ultrasonic sensor 400 is re-extended from the shell 100. Among them, the posture acquisition device 600 is used to collect the posture of the ultrasonic sensor 400 after it is re-extended from the shell 100 and can transmit relevant data to the background, so as to correct the deviation of the measurement result caused by the change of the posture of the ultrasonic sensor 400 before and after the movement.

[0031] Reference Figure 1 and Figure 3 In some of the embodiments, a wireless transmission device 800 for transmitting data to the background is provided in the housing 100, and the posture acquisition device 600 is connected to the wireless transmission device 800, and data is transmitted by wireless transmission, thereby reducing wiring costs and line maintenance costs.

[0032] It should be noted that, in some of the embodiments, the pressure sensing device 210 is connected to the wireless transmission device 800. When the external pressure detected by the pressure sensing device 210 exceeds the bearing capacity of the first driving device 300, that is, the bearing capacity of the first driving device 300 is unable to allow the first driving device 300 to drive the baffle 200 to push open the concrete layer, the background can warn the relevant staff to notify the relevant staff to go to the measuring point to remove the concrete layer.

[0033] Reference Figure 1 and Figure 3 In some embodiments, the first drive device 300 includes a first drive motor 310 and a screw lifting mechanism 320, which are arranged on the housing 100, the first drive motor 310 is connected to the control device 700, the output shaft of the first drive motor 310 is transmission-connected to the screw lifting mechanism 320, and the screw lifting mechanism 320 is connected to the baffle 200. Specifically, the screw lifting mechanism 320 includes a screw and a nut, the output shaft of the first drive motor 310 is transmission-connected to the nut of the screw lifting mechanism 320, the screw of the screw lifting mechanism 320 is connected to the baffle 200, the screw lifting mechanism 320 has a high bearing capacity, and can provide sufficient bearing capacity to cooperate with the first drive motor 310 to push up the concrete layer sprayed at the measuring point when the volume is limited, wherein the specific structure of the screw lifting mechanism 320 is a well-known technology and will not be described here.

[0034] It should be noted that, in some of the embodiments, the number of the screw lifting mechanisms 320 is four, and the four screw lifting mechanisms 320 are distributed in a rectangular array. Correspondingly, each screw lifting mechanism 320 is configured with a first drive motor 310, which can reduce the bearing capacity required to be provided by each screw lifting mechanism 320, which is beneficial to extending the service life of the screw lifting mechanism 320.

[0035] Reference Figure 1 and Figure 3In some of the embodiments, the shell 100 is surrounded by a base plate 110, four frame columns 120, four frame beams 130 and four side plates (not shown in the figure), wherein the end of the frame beam 130 protrudes from the outer wall of the shell 100, and the first drive motor 310 and the screw lifting mechanism 320 are arranged on the part of the frame beam 130 protruding from the outer wall of the shell 100, and the frame columns 120 and the frame beams 130 can provide sufficient supporting force for the first drive device 300.

[0036] It should be noted that, in some other embodiments, the first driving device may also be a cylinder or an electric push rod, which is not limited here.

[0037] Reference Figure 1 and Figure 3 In some embodiments, the second driving device 500 includes a second driving motor 510, a threaded rod 520 and a sleeve 530. The second driving motor 510 is arranged in the shell 100. The second driving motor 510 is connected to the control device 700. The output shaft of the second driving motor 510 is connected to the threaded rod 520 so that the second driving motor 510 can drive the threaded rod 520 to rotate. Specifically, the output shaft of the second driving motor 510 is connected to the threaded rod 520 through a coupling. The sleeve 530 is sleeved on the threaded rod 520 and threadedly connected with the threaded rod 520. A limiting structure for limiting the rotation of the sleeve 530 is provided in the shell 100. The ultrasonic sensor 400 is arranged on the upper part of the sleeve 530. The posture acquisition device 600 is arranged on the sleeve 530 or on the ultrasonic sensor 400. Its structure is simple and easy to control.

[0038] It should be noted that, in some of the embodiments, the limiting structure includes a limiting plane (not shown in the figure) arranged on the side of the sleeve 530, and the limiting plane is attached to the inner wall of the shell 100, and its structure is simple and easy to implement.

[0039] It should be noted that, in some other embodiments, the limiting structure can also be a guide sleeve fixedly arranged in the shell, and the guide sleeve is sleeved on the lower part of the sleeve. Accordingly, the cross-section of the sleeve is a regular polygon, and the shape of the cross-section of the guide sleeve is adapted to the shape of the cross-section of the sleeve, so that the sleeve can move up and down relative to the guide sleeve but cannot rotate relative to the guide sleeve. This is not limited here.

[0040] It should be noted that, in some other embodiments, the second driving device may also be a cylinder or an electric push rod, which is not limited here.

[0041] It should be noted that in some of the embodiments, the attitude acquisition device 600 is a gyroscope. Of course, the attitude acquisition device can also be a three-dimensional angle sensor, which is not limited here.

[0042] Reference Figure 1 and Figure 3 In some of the embodiments, a lithium battery 900 for power supply is disposed in the housing 100, which reduces the wiring cost and the line maintenance cost.

[0043] Reference Figure 1 and Figure 3 In some of the embodiments, the area of ​​the orthographic projection of the baffle 200 along its moving direction is much larger than the opening area of ​​the top of the shell 100, which is helpful in preventing concrete from being sprayed into the interior of the shell 100.

[0044] Reference Figure 1 and Figure 2 In some embodiments, the pressure sensing device 210 includes a resistance strain gauge 211 laid on the upper surface of the baffle 200 and a flexible protective layer 212 laid on the upper surface of the resistance strain gauge 211. Specifically, the resistance strain gauge 211 is connected to the control device 700 through a line, wherein the flexible protective layer 212 can be a metal layer, a rubber layer or other layered structures, which is not limited here.

[0045] In the description of this specification, if the description involves reference terms such as "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples" and "some examples", it means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0046] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A measuring point device for monitoring and measuring tunnel deformation, characterized in that: include: A shell (100), the shell (100) being used to be fixed on a side wall of a tunnel, and the top of the shell (100) being an open structure; a baffle (200), the baffle (200) being arranged to cover the opening at the top of the shell (100); A first driving device (300), the first driving device (300) being connected to the baffle (200) and capable of driving the baffle (200) to move up and down; A pressure sensing device (210), the pressure sensing device (210) being arranged on the top of the baffle (200); An ultrasonic sensor (400), the ultrasonic sensor (400) being arranged in the housing (100); a second driving device (500), the second driving device (500) being connected to the ultrasonic sensor (400) and capable of driving the ultrasonic sensor (400) to move up and down; A posture acquisition device (600), the posture acquisition device (600) is used to acquire the posture of the ultrasonic sensor (400) and can transmit the data to a background; A control device (700), wherein the control device (700) is disposed in the housing (100) and is respectively connected to the first drive device (300), the pressure sensing device (210), and the second drive device (500).

2. The measuring point device for monitoring and measuring tunnel deformation according to claim 1, characterized in that: A wireless transmission device (800) for transmitting data to a background is arranged in the housing (100), and the posture acquisition device (600) is connected to the wireless transmission device (800).

3. The measuring point device for monitoring and measuring tunnel deformation according to claim 2, characterized in that: The pressure sensing device (210) is connected to the wireless transmission device (800).

4. The measuring point device for monitoring and measuring tunnel deformation according to claim 1, characterized in that: The first driving device (300) comprises a first driving motor (310) and a screw lifting mechanism (320); the first driving motor (310) and the screw lifting mechanism (320) are arranged on the housing (100); the first driving motor (310) is connected to the control device (700); the output shaft of the first driving motor (310) is transmission-connected to the screw lifting mechanism (320); and the screw lifting mechanism (320) is connected to the baffle (200).

5. The measuring point device for monitoring and measuring tunnel deformation according to claim 1, characterized in that: The second driving device (500) comprises a second driving motor (510), a threaded rod (520) and a sleeve (530); the second driving motor (510) is arranged in the housing (100); the second driving motor (510) is connected to the control device (700); the output shaft of the second driving motor (510) is connected to the threaded rod (520) so that the second driving motor (510) can drive the threaded rod (520) to rotate; the sleeve (530) is sleeved on the threaded rod (520) and is threadedly connected to the threaded rod (520); a limiting structure for limiting the rotation of the sleeve (530) is arranged in the housing (100); the ultrasonic sensor (400) is arranged on the upper part of the sleeve (530); and the posture acquisition device (600) is arranged on the sleeve (530) or on the ultrasonic sensor (400).

6. The measuring point device for monitoring and measuring tunnel deformation according to claim 5, characterized in that: The limiting structure comprises a limiting plane arranged on the side of the sleeve (530), and the limiting plane is in contact with the inner side wall of the shell (100).

7. The measuring point device for monitoring and measuring tunnel deformation according to claim 1, characterized in that: The posture acquisition device (600) is a gyroscope.

8. The measuring point device for monitoring and measuring tunnel deformation according to claim 1, characterized in that: A lithium battery (900) for supplying power is arranged in the housing (100).

9. The measuring point device for monitoring and measuring tunnel deformation according to claim 1, characterized in that: The area of ​​the orthographic projection of the baffle (200) along its moving direction is much larger than the opening area of ​​the top of the shell (100).

10. The measuring point device for monitoring and measuring tunnel deformation according to claim 1, characterized in that: The pressure sensing device (210) comprises a resistance strain gauge (211) laid on the upper surface of the baffle (200) and a flexible protective layer (212) laid on the upper surface of the resistance strain gauge (211).

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