A device for automatically and accurately detecting the length of tunnel anchor rods

Abstract

The utility model provides a device for automatically and accurately detecting the length of a tunnel anchor rod, comprising: a driving device is installed at the bottom of a mobile platform, and the mobile platform is driven to move within a preset area by the driving device; a laser distance measuring sensor is installed on the top of the mobile platform, and the laser distance measuring sensor is connected to a central processing unit and sends a distance measuring signal to the central processing unit; an image sensor is arranged adjacent to the laser distance measuring sensor on the top of the mobile platform, and the image sensor is connected to the mobile platform through an electric telescopic rod, and the image sensor is electrically connected to the central processing unit; an acoustic wave sensor is arranged adjacent to the electric telescopic rod on the top of the mobile platform, and the acoustic wave sensor is connected to the central processing unit and sends an acoustic wave measurement signal to the central processing unit, and the central processing unit comprehensively determines the length of the tunnel anchor rod according to the received multiple signals. The utility model solves the problem that the existing tunnel anchor rod length is difficult to be automatically and accurately measured.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel detection, in particular to a device for automatically and accurately detecting the length of a tunnel anchor rod. Background Art

[0002] At present, anchor rods are the most basic support part in tunnel construction, which can reinforce the main body of the tunnel, thereby improving the structural strength of the main body of the tunnel. Because anchor rods are an important support part in tunnel construction, the quality of their anchoring directly determines the safety of tunnel construction and operation. If the quality of anchoring is not high, serious safety accidents are prone to occur during the subsequent construction and operation of the tunnel. Therefore, it is necessary to accurately measure the length of anchor rods during the construction stage, which will help the subsequent construction planning and avoid safety accidents. Utility Model Content

[0003] The utility model provides a device for automatically and accurately detecting the length of a tunnel anchor rod, which is used to solve the problem that the length of the existing tunnel anchor rod is difficult to be automatically and accurately measured.

[0004] The utility model provides a device for automatically and accurately detecting the length of a tunnel anchor rod, which comprises:

[0005] Mobile platforms, laser range sensors, image sensors, and acoustic sensors;

[0006] A driving device is installed at the bottom of the mobile platform, and the mobile platform is driven to move within a preset area by the driving device;

[0007] The laser distance measuring sensor is installed on the top of the mobile platform, and the laser distance measuring sensor is connected to the central processing unit and sends a distance measuring signal to the central processing unit;

[0008] The image sensor is arranged adjacent to the laser ranging sensor on the top of the mobile platform, the image sensor is connected to the mobile platform via an electric telescopic rod, and the image sensor is electrically connected to the central processing unit;

[0009] The acoustic wave sensor is arranged adjacent to the electric telescopic rod on the top of the mobile platform. The acoustic wave sensor is connected to the central processor and sends an acoustic wave measurement signal to the central processor. The central processor comprehensively determines the length of the tunnel anchor rod based on the received multiple signals.

[0010] According to the device for automatically and accurately detecting the length of a tunnel anchor rod provided by the utility model, the mobile platform comprises a shell, a receiving cavity is formed inside the shell, and the driving device is installed in the receiving cavity;

[0011] A partition is also arranged in the shell, and a central processing unit and a power supply device are arranged on the partition.

[0012] According to the device for automatically and accurately detecting the length of a tunnel anchor rod provided by the utility model, the driving device comprises: a driving motor and a power wheel;

[0013] The driving motor is connected to four power wheels respectively through a transmission shaft and gears, and the driving motor drives the power wheels to rotate, thereby driving the mobile platform to move.

[0014] According to the device for automatically and accurately detecting the length of a tunnel anchor rod provided by the utility model, the laser ranging sensor sends a ranging signal to the anchor rod, and the ranging signal is received by the laser ranging sensor after being reflected by the anchor rod;

[0015] The laser ranging sensor sends the reflected ranging signal to the central processor.

[0016] According to the device for automatically and accurately detecting the length of a tunnel anchor rod provided by the utility model, the image sensor is installed on the top of the mobile platform through an electric telescopic rod;

[0017] The electric telescopic rod is extended or shortened by a telescopic motor, and the image sensor is transmitted to different heights by the extension and retraction of the electric telescopic rod to collect anchor rod images at different heights.

[0018] According to the device for automatically and accurately detecting the length of a tunnel anchor rod provided by the utility model, a knocking rod is connected to the electric telescopic rod, a knocking hammer is installed at the end of the knocking rod, a turntable is installed at the bottom of the electric telescopic rod, and the turntable is connected to a rotating motor through a gear;

[0019] The rotary motor drives the turntable to rotate, and the turntable drives the electric telescopic rod to rotate;

[0020] The electric telescopic rod rotates to drive the knocking rod to rotate, and the knocking hammer at the end of the knocking rod knocks the anchor rod to make a sound.

[0021] According to the device for automatically and accurately detecting the length of a tunnel anchor rod provided by the utility model, the image sensor collects image information of the anchor rod and sends the image information to a central processing unit.

[0022] According to the device for automatically and accurately detecting the length of a tunnel anchor rod provided by the utility model, the acoustic wave sensor is installed on the top of the mobile platform, and after the percussion hammer strikes the anchor rod, the acoustic wave sensor collects the acoustic wave information after the percussion;

[0023] After the acoustic wave sensor processes the acoustic wave signal, it sends the acoustic wave measurement signal to the central processor.

[0024] According to the device for automatically and accurately detecting the length of a tunnel anchor rod provided by the utility model, a plurality of obstacle avoidance sensors are installed on the side of the mobile platform, and active obstacle avoidance is performed during the movement of the mobile platform through the obstacle avoidance sensors.

[0025] According to the device for automatically and accurately detecting the length of a tunnel anchor rod provided by the utility model, the power supply device is connected to all power-consuming devices, and power is supplied to all power-consuming devices through the power supply device.

[0026] The utility model provides an automatic and accurate device for detecting the length of tunnel anchor rods. The device can drive the entire device to move through a set driving device, detect the length of anchor rods at different positions, measure the length of anchor rods in multiple ways by setting laser distance measuring sensors, image sensors and acoustic wave sensors, and then compare and calibrate multiple measurement results to increase the accuracy of anchor rod length measurement, thereby completing automatic and high-precision measurement of anchor rod length. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 It is a schematic diagram of the structure of a device for automatically and accurately detecting the length of tunnel anchor rods;

[0029] Reference numerals:

[0030] 1: Mobile platform; 2: Laser ranging sensor; 3: Image sensor; 4: Sound wave sensor; 5: Power wheel; 6: Electric telescopic rod; 7: Knocking rod; 8: Knocking hammer; 9: Obstacle avoidance sensor. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] Combine the following Figure 1 -Description of the utility model of an automatic and accurate device for detecting the length of a tunnel anchor rod, comprising:

[0033] Mobile platform 1, laser ranging sensor 2, image sensor 3 and acoustic wave sensor 4;

[0034] A driving device is installed at the bottom of the mobile platform 1, and the mobile platform 1 is driven to move within a preset area by the driving device;

[0035] The laser distance measuring sensor 2 is installed on the top of the mobile platform 1, and the laser distance measuring sensor 2 is connected to the central processing unit and sends a distance measuring signal to the central processing unit;

[0036] The image sensor 3 is disposed adjacent to the laser ranging sensor 2 on the top of the mobile platform 1, the image sensor 3 is connected to the mobile platform 1 via an electric telescopic rod 6, and the image sensor 3 is electrically connected to the central processing unit;

[0037] The acoustic wave sensor 4 is arranged adjacent to the electric telescopic rod 6 on the top of the mobile platform 1. The acoustic wave sensor 4 is connected to the central processing unit and sends an acoustic wave measurement signal to the central processing unit. The central processing unit comprehensively determines the length of the tunnel anchor rod based on the received multiple signals.

[0038] In the utility model, the mobile platform 1 comprises a shell, a receiving cavity is formed inside the shell, and the driving device is installed in the receiving cavity;

[0039] A partition is also arranged in the shell, and a central processing unit and a power supply device are arranged on the partition.

[0040] By setting up partitions, more compatible devices can be installed in the accommodating cavity, thereby improving the storage capacity and providing a support platform for the central processing unit, power supply equipment, etc. The power supply equipment is connected to all electrical devices, and power is supplied to all electrical devices through the power supply equipment.

[0041] The driving device includes: a driving motor and a power wheel 5;

[0042] The driving motor is connected to four power wheels 5 respectively through a transmission shaft and gears, and the driving motor drives the power wheels 5 to rotate, thereby driving the mobile platform 1 to move.

[0043] In the utility model, the driving motor receives the control instruction of the central processing unit, determines the range to be moved, moves within the preset range, and measures the length of the anchor rod.

[0044] At the same time, a plurality of obstacle avoidance sensors 9 are installed on the side of the mobile platform 1 , and the obstacle avoidance sensors 9 are used to actively avoid obstacles during the movement of the mobile platform 1 .

[0045] The obstacle avoidance sensors 9 are arranged around the mobile platform 1, and can collect obstacle information in multiple directions. After obtaining the obstacle signal, it is sent to the central processor, and the central processor sends a control instruction to the drive motor to control the mobile platform 1 to turn and avoid obstacles.

[0046] The laser ranging sensor 2 sends a ranging signal to the anchor rod, and the ranging signal is received by the laser ranging sensor 2 after being reflected by the anchor rod;

[0047] The laser ranging sensor 2 sends the reflected ranging signal to the central processing unit.

[0048] In the utility model, the laser ranging sensor 2 transmits a ranging signal to the anchor rod. When the ranging signal reaches the anchor rod, it is reflected by the anchor rod. The laser ranging sensor 2 receives the reflected ranging signal and sends the reflected ranging signal to the central processing unit. The central processing unit compares the transmitted ranging signal with the reflected ranging signal to obtain the length value of the anchor rod.

[0049] The image sensor 3 is mounted on the top of the mobile platform 1 through an electric telescopic rod 6;

[0050] The electric telescopic rod 6 is extended or shortened by the telescopic motor, and the image sensor 3 is transmitted to different heights by the extension and contraction of the electric telescopic rod 6 to collect images of the anchor rod at different heights. The image sensor 3 collects image information of the anchor rod and sends the image information to the central processor.

[0051] A knocking rod 7 is connected to the electric telescopic rod 6, a knocking hammer 8 is installed at the end of the knocking rod 7, and a turntable is installed at the bottom of the electric telescopic rod 6, and the turntable is connected to the rotating motor through gears;

[0052] The rotary motor drives the turntable to rotate, and the turntable drives the electric telescopic rod 6 to rotate;

[0053] The electric telescopic rod 6 rotates to drive the knocking rod 7 to rotate, and the knocking hammer 8 at the end of the knocking rod 7 knocks the anchor rod to make a sound.

[0054] In the utility model, the electric telescopic rod 6 can be extended or shortened under the drive of the telescopic motor. By changing the length of the electric telescopic rod 6, the image sensor 3 can be sent to different heights to collect corresponding anchor rod images to meet different height requirements. After the Maotai image is collected by the image sensor 3, it is sent to the central processing unit, and the image is analyzed by the central processing unit to determine the anchor rod length.

[0055] A rotating motor is also installed at the bottom of the electric telescopic rod 6, which drives the turntable to rotate. The turntable drives the electric telescopic rod 6 to rotate. While the electric telescopic rod 6 rotates, the knocking rod 7 rotates synchronously. The knocking hammer 8 at the end of the knocking rod 7 knocks the anchor rod, and the anchor rod makes a sound due to the knocking vibration.

[0056] The acoustic wave sensor 4 is installed on the top of the mobile platform 1. After the hammer 8 strikes the anchor rod, the acoustic wave sensor 4 collects the acoustic wave information after the striking.

[0057] After the acoustic wave signal is processed by the acoustic wave sensor 4, an acoustic wave measurement signal is sent to the central processing unit.

[0058] The acoustic wave measurement signal is sent to the central processor, which analyzes it and obtains the wave velocity of the anchored section and the wave velocity of the unanchored section from the reflected wave velocity of the anchor rod. Specifically, since the anchor rod (cable) in the anchor structure is bonded with concrete and surrounding rock, there is a large difference in elastic wave impedance between the rod body and the surrounding rock (soil). Therefore, when the anchor rod is struck to generate acoustic wave feedback, the average wave velocity of the acoustic wave feedback from the part of the anchor rod anchored in the rock mass is different from the average wave velocity of the acoustic wave feedback from the part not anchored in the rock mass. Therefore, according to the difference in the wave velocity of the acoustic wave feedback, the wave velocity of the anchored section and the wave velocity of the unanchored section are obtained from the reflected wave velocity of the anchor rod.

[0059] The length of the anchored section and the length of the unanchored section are calculated according to the wave velocity of the anchored section and the wave velocity of the unanchored section, respectively, and the length of the anchored section is calculated according to the length of the anchored section and the length of the unanchored section. Specifically, after the wave velocity of the anchored section and the wave velocity of the unanchored section are obtained, the length of the anchored section and the length of the unanchored section are calculated according to the corresponding feedback time, and the length of the anchored section and the length of the unanchored section are summed to calculate the length of the anchored section.

[0060] After the anchor rod length is measured by the laser distance sensor 2, the image sensor 3 and the acoustic wave sensor 4 respectively, the three data are compared, the values ​​with large deviations are discarded, and then the average value is calculated to finally determine the length of the anchor rod.

[0061] The utility model provides an automatic and accurate device for detecting the length of tunnel anchor rods. The driving device is set to drive the whole to move, detect the length of anchor rods at different positions, and measure the length of anchor rods in multiple ways by setting laser ranging sensors 2, image sensors 3 and acoustic wave sensors 4. Then, multiple measurement results are compared and calibrated to increase the accuracy of anchor rod length measurement, so as to complete automatic and high-precision measurement of anchor rod length.

[0062] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A device for automatically and accurately detecting the length of a tunnel anchor, characterized in that: include: Mobile platforms, laser range sensors, image sensors, and acoustic sensors; A driving device is installed at the bottom of the mobile platform, and the mobile platform is driven to move within a preset area by the driving device; The laser distance measuring sensor is installed on the top of the mobile platform, and the laser distance measuring sensor is connected to the central processing unit and sends a distance measuring signal to the central processing unit; The image sensor is arranged adjacent to the laser ranging sensor on the top of the mobile platform, the image sensor is connected to the mobile platform via an electric telescopic rod, and the image sensor is electrically connected to the central processing unit; The acoustic wave sensor is arranged adjacent to the electric telescopic rod on the top of the mobile platform. The acoustic wave sensor is connected to the central processor and sends an acoustic wave measurement signal to the central processor. The central processor comprehensively determines the length of the tunnel anchor rod based on the received multiple signals.

2. The device for automatically and accurately detecting the length of tunnel anchor rods according to claim 1 is characterized in that: The mobile platform comprises a shell, a receiving cavity is formed inside the shell, and the driving device is installed in the receiving cavity; A partition is also provided in the shell, and a central processing unit and a power supply device are installed on the partition.

3. The device for automatically and accurately detecting the length of a tunnel anchor rod according to claim 2 is characterized in that: The driving device comprises: a driving motor and a power wheel; The driving motor is connected to four power wheels respectively through a transmission shaft and gears, and the driving motor drives the power wheels to rotate, thereby driving the mobile platform to move.

4. The device for automatically and accurately detecting the length of a tunnel anchor rod according to claim 1 is characterized in that: The laser ranging sensor sends a ranging signal to the anchor rod, and the ranging signal is received by the laser ranging sensor after being reflected by the anchor rod; The laser ranging sensor sends the reflected ranging signal to the central processor.

5. The device for automatically and accurately detecting the length of a tunnel anchor rod according to claim 1 is characterized in that: The image sensor is installed on the top of the mobile platform through an electric telescopic rod; The electric telescopic rod is extended or shortened by a telescopic motor, and the image sensor is transmitted to different heights by the extension and retraction of the electric telescopic rod to collect anchor rod images at different heights.

6. The device for automatically and accurately detecting the length of a tunnel anchor rod according to claim 5, characterized in that: The electric telescopic rod is connected to a knocking rod, a knocking hammer is installed at the end of the knocking rod, and a turntable is installed at the bottom of the electric telescopic rod, and the turntable is connected to a rotating motor through a gear; The rotary motor drives the turntable to rotate, and the turntable drives the electric telescopic rod to rotate; The electric telescopic rod rotates to drive the knocking rod to rotate, and the knocking hammer at the end of the knocking rod knocks the anchor rod to make a sound.

7. The device for automatically and accurately detecting the length of a tunnel anchor rod according to claim 5, characterized in that: The image sensor collects image information of the anchor rod and sends the image information to the central processing unit.

8. The device for automatically and accurately detecting the length of a tunnel anchor rod according to claim 1 is characterized in that: The acoustic wave sensor is installed on the top of the mobile platform, and after the percussion hammer strikes the anchor rod, the acoustic wave sensor collects the acoustic wave information after the percussion; After the acoustic wave sensor processes the acoustic wave signal, it sends the acoustic wave measurement signal to the central processor.

9. The device for automatically and accurately detecting the length of a tunnel anchor rod according to claim 1, characterized in that: A plurality of obstacle avoidance sensors are installed on the side of the mobile platform, and the obstacle avoidance sensors are used to actively avoid obstacles during the movement of the mobile platform.

10. The device for automatically and accurately detecting the length of a tunnel anchor rod according to claim 2, characterized in that: The power supply device is connected to all power-consuming devices, and power is supplied to all power-consuming devices through the power supply device.

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