Trinity loose circle detection device

Abstract

The utility model provides a kind of triad loosening circle detection device, it is related to surrounding rock loosening circle measurement field, and it includes: drive host computer and a pair of detection mechanism, drive host computer two sides are symmetrically equipped with telescopic rod body, detection mechanism is connected respectively by telescopic rod body and drive host computer, servo motor and data transmission processing module are equipped in drive host computer, the top of detection mechanism is equipped with borehole imaging unit, borehole imaging unit includes cone shell, cone shell top is equipped with camera hole, miniature camera is fixedly installed in camera hole;Ultrasonic transmitter and receiving sensor are equipped on the shell face of cone shell.The utility model first integrates three kinds of technologies of borehole imaging, rock stress loading and ultrasonic detection into one equipment, forms visual perception, mechanical response, elastic wave analysis triad detection technology.The surrounding rock after excavation is divided into three categories, small loosening circle surrounding rock, middle loosening circle surrounding rock and large loosening circle surrounding rock, so that loosening circle detection is more accurate.

Description

Technical Field

[0001] This utility model relates to the field of measuring loosened zones in surrounding rock, and more specifically, to a three-in-one loosened zone detection device. Background Technology

[0002] The loosened zone of surrounding rock is a manifestation of the combined effects of various factors such as surrounding rock stress and properties. The development depth of the loosened zone reflects the surrounding rock stress and strength. The higher the strength of the surrounding rock, the shallower the loosened zone; the lower the strength, the deeper the loosened zone. Conversely, the higher the surrounding rock stress, the deeper the loosened zone; and vice versa. However, the theory of loosened zone support avoids the limitations of measuring surrounding rock stress, strength, and structural surfaces, and is an important basis for roadway support design. Based on the development depth of the loosened zone, it is classified, and different support methods are adopted for roadways with different loosened zone types.

[0003] In mine surveying, ensuring the accuracy of the measurement process is crucial. The entire process is extremely complex and demands a high level of skill from the surveyors. Traditional surveying requires manual pushing and pulling, with the push rod needing to be manually disassembled for both, a time-consuming and labor-intensive process. Due to differences in the operators' professional knowledge and surveying techniques, inaccuracies in the pushing and pulling distances are inevitable, leading to measurement errors.

[0004] Furthermore, traditional measuring equipment is limited in scope and has poor applicability when detecting vertical boreholes or boreholes at an angle to the roof, making manual advancement difficult. Additionally, when encountering hard or broken roofs, relying solely on imaging or acoustic detection techniques often fails to accurately determine the extent of the loose zone. Summary of the Invention

[0005] The purpose of this invention is to provide a three-in-one loose ring detection device that integrates borehole imaging detection, stress detection, and ultrasonic detection, making loose ring detection more accurate.

[0006] The embodiments of this utility model are implemented as follows:

[0007] This application provides a three-in-one loose ring detection device, including a drive host and a pair of detection mechanisms. The drive host has symmetrically arranged telescopic rods on both sides. The detection mechanisms are respectively connected to the drive host through the telescopic rods. The drive host is equipped with a servo motor and a data transmission processing module.

[0008] Furthermore, the top of the detection mechanism is equipped with a drilling imaging unit, which includes a conical shell. A camera hole is opened at the top of the conical shell, and a miniature camera is fixedly installed inside the camera hole. An ultrasonic transmitter and a receiving sensor are provided on the shell surface of the conical shell.

[0009] Furthermore, the detection mechanism includes a main shaft, on which a main tube is fitted. The top of the main tube is connected to the bottom of the conical outer shell. A water supply device is provided inside the main tube, and water injection holes are provided on the surface of the conical outer shell.

[0010] Furthermore, a secondary tube is slidably mounted on the main shaft. The walls of both the main tube and the secondary tube are provided with the same number of protrusions. Each protrusion is movably connected to a connecting rod. The connecting rods are matched in pairs to form a set of telescopic arms. Each set of telescopic arms is movably connected to a support plate.

[0011] Furthermore, stress sensors are also installed on the support plate.

[0012] Furthermore, ball bearings are evenly distributed on the inner walls of both the main tube and the auxiliary tube.

[0013] Furthermore, the telescopic rod is also equipped with a coupling, which is connected to the bottom of the secondary tube.

[0014] Furthermore, the drive unit is also equipped with Mecanum wheels at the bottom.

[0015] Compared with the prior art, the embodiments of this utility model have at least the following advantages or beneficial effects:

[0016] This invention is the first to integrate three technologies—drilling imaging, rock stress loading, and ultrasonic detection—into a single device, forming a three-in-one detection technology encompassing visual perception, mechanical response, and elastic wave analysis. It categorizes the excavated surrounding rock into three types: small loosened zone, medium loosened zone, and large loosened zone, making loosened zone detection more accurate. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0019] Figure 2 This is a schematic diagram of the detection mechanism in an embodiment of the present invention;

[0020] Figure 3 This is a cross-sectional view of the main tube, the secondary tube, and the conical shell in an embodiment of this utility model;

[0021] Figure 4 This is a top view of the conical outer shell in an embodiment of the present invention;

[0022] Figure 5 This is a top view of the support plate in an embodiment of this utility model.

[0023] Icons: 1-Drive host, 2-Telescopic rod, 3-Conical shell, 31-Miniature camera, 4-Ultrasonic transmitter, 5-Receiver sensor, 6-Main shaft, 7-Main main body, 8-Water supply device, 801-Water injection pipe, 9-Water injection hole, 10-Secondary pipe, 11-Boss, 12-Connecting rod, A-Telescopic arm, 13-Support plate, 14-Stress sensor, 15-Ball bearing, 16-Coupling. Detailed Implementation

[0024] The embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0025] Example 1

[0026] Please refer to Figures 1-5 This application provides a three-in-one loose ring detection device, including a drive host 1 and a pair of detection mechanisms. The drive host 1 has telescopic rods 2 symmetrically arranged on both sides. The detection mechanisms are connected to the drive host 1 through the telescopic rods 2. The drive host 1 is equipped with a servo motor and a data transmission processing module.

[0027] The top of the detection mechanism is equipped with a drilling imaging unit, which includes a conical shell 3. The top of the conical shell 3 has a camera hole (not shown in the figure), and a groove is provided inside the camera hole, in which a wireless miniature camera 31 is fixedly installed. The shell surface of the conical shell 3 also has a groove, in which an ultrasonic transmitter 4 and a receiving sensor 5 are respectively provided to transmit and receive ultrasonic signals.

[0028] Furthermore, the detection mechanism includes a main shaft 6, on which a main tube body 7 is fitted. The top of the main tube body 7 is connected to the bottom of the conical outer shell 3. A water supply device 8 is provided inside the main tube body 7 (which needs to be filled with water before use). A water injection hole 9 is provided on the shell surface of the conical outer shell 3. The water supply device 8 and the water injection hole 9 are connected by a water injection pipe 801.

[0029] In actual use, the image information captured by the miniature camera 31 can be transmitted to the data transmission processing module in real time, and then transmitted to the staff's mobile terminal (mobile phone, computer, etc.) through the data transmission processing module. The staff can observe the actual situation of the surrounding rock at the first time and make timely responses.

[0030] When ultrasonic detection is required, a location with intact borehole walls is first selected. The staff controls the water supply device 8 to start supplying water through the data transmission processing module. The water flows through the water injection hole 9 to flush away the rock cuttings in the borehole, so that the device has good acoustic coupling with the borehole wall. Then, the ultrasonic transmitter 4 and the receiving sensor 5 are turned on, and the data received by the receiving sensor 5 is transmitted to the data transmission processing module for processing and analysis.

[0031] It should be noted that both the ultrasonic transmitter 4 and the receiving sensor 5 in this embodiment can be controlled to start and stop via wireless signals. This is a mature existing technology on the market, so we will not go into too much detail about their specific models and principles.

[0032] Furthermore, according to the principle of rock mass acoustic wave detection, the propagation speed of ultrasonic waves is related to the density and elastic constant of the rock mass. If the surrounding rock has a high degree of fissure development and fracture, the wave impedance will be greater and the measured sound velocity will be lower; conversely, if the fissure is not developed and the fracture is not high, the wave impedance will be smaller and the measured sound velocity will be greater. By testing the wave changes of ultrasonic waves within a certain depth range of the surrounding rock in the tunnel, the loosening range of the surrounding rock can be determined. Finally, based on the recorded data, a borehole depth-wave velocity curve is plotted, and the waveform changes are observed. Once the waveform stabilizes, sampling and storage can be performed, and then the sensor is moved outward to the next point for testing until the borehole opening test is completed. Therefore, workers can also judge the depth of the loosened zone of the surrounding rock from the curve change trend. Based on the thickness of the loosened zone and the amount of rock fragmentation and deformation, the excavated surrounding rock can be divided into three categories: small loosened zone surrounding rock, medium loosened zone surrounding rock, and large loosened zone surrounding rock.

[0033] In this embodiment, a secondary tube 10 is also slidably provided on the main shaft 6. The main tube 7 and the secondary tube 10 are both provided with the same number of protrusions 11 around their tube walls. Each protrusion 11 is movably connected to a connecting rod 12. The connecting rods 12 are adapted to each other to form a set of telescopic arms A. Each set of telescopic arms A is movably connected to a support plate 13.

[0034] In actual use, the main tube 7 cannot slide axially because it is connected to the conical outer shell 3, while the secondary tube 10 can slide back and forth axially along the main shaft 6. The bottom of the secondary tube 10 is snapped to the top of the telescopic rod 2 (not shown in the figure). When the telescopic rod 2 pushes the secondary tube 10 to slide towards the main tube 7, it drives the connecting rod 12 on the boss 11 to start rotating, and the telescopic arm A extends outward, while driving the support plate 13 to support outward. Similarly, when the telescopic rod 2 pulls the secondary tube 10 to slide in the direction of the main unit 1, the telescopic arm A retracts inward, while driving the support plate 13 to retract inward.

[0035] Furthermore, a stress sensor 14 is also installed on the support plate 13 for real-time monitoring of the anchoring force. During use, the operator uses the stress sensor 14 to transmit the values ​​back to the data transmission and processing module in real time to ensure that the contact pressure between the support plate 13 and the borehole wall is moderate (e.g., a threshold of ≥5MPa is set), avoiding excessive embedding that could damage the borehole wall or cause anchoring failure. In addition, during actual monitoring, the stress sensor 14 records stress fluctuations based on the magnitude of the rock mass rebound force. Each time the plate advances 10cm, the stress change is repeatedly measured to determine the range of the loosened zone of the surrounding rock.

[0036] Optionally, in this embodiment, the protrusions 11 on the main tube 7 and the secondary tube 10 are each set to 5, thereby enabling the installation of 5 sets of telescopic arms A and support plates 13, which can detect the anchoring force in multiple directions and further improve the accuracy of the data.

[0037] Example 2

[0038] This embodiment is basically the same as Embodiment 1, except that in this embodiment, ball bearings 15 are evenly distributed on the inner sidewalls of both the main tube 7 and the secondary tube 10. A coupling 16 is also fitted onto the telescopic rod 2, and the coupling 16 is snap-fitted to the bottom of the secondary tube 10.

[0039] In this embodiment, the telescopic rod 2 is driven by a servo motor, allowing it to not only extend and retract but also rotate 360°. The telescopic rod 2 can drive the coupling 16 to rotate synchronously. Since ball bearings 15 are provided on the inner walls of the main tube 7 and the secondary tube 10, both the main tube 7 and the secondary tube 10 can rotate on the main shaft 6. When the telescopic rod 2 rotates, the coupling 16 drives the secondary tube 10 to rotate, thereby driving the main tube 7 to rotate synchronously. Thus, the support plate 13 can rotate freely 360° and adjust its angle arbitrarily to adapt to boreholes of different diameters. Furthermore, it can detect changes in surrounding rock stress in three-dimensional space, thereby initially determining the extent of the loosening zone. This method is more accurate than traditional detectors that only detect stress changes in a single direction.

[0040] In this embodiment, the bottom surface of the drive host 1 is also provided with 4 Mecanum wheels (not shown in the figure), which are located at the 4 corners of the bottom. Each Mecanum wheel is driven by a separate servo motor, and each servo motor is electrically connected to the data transmission processing module. Thus, during use, the operator can freely control the movement of the drive host 1 to facilitate the advancement of the probe.

[0041] In summary, the embodiments of this utility model provide a three-in-one loosening zone detection device. This utility model is the first to integrate three technologies—drilling imaging, rock stress loading, and ultrasonic detection—into a single device, forming a three-in-one detection technology encompassing visual perception, mechanical response, and elastic wave analysis. It categorizes the excavated surrounding rock into three types: small loosening zone, medium loosening zone, and large loosening zone, making loosening zone detection more accurate.

[0042] The above are only some embodiments and implementation methods of this application. The protection scope of this application is not limited thereto. In the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other. Any combination of features in different embodiments is also within the protection scope of this application. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the protection scope of this application.

Claims

1. A three-in-one loose ring detection device, characterized in that, It includes a drive host and a pair of detection mechanisms. The drive host has symmetrically arranged telescopic rods on both sides, and the detection mechanisms are respectively connected to the drive host through the telescopic rods. The drive host is equipped with a servo motor and a data transmission processing module.

2. The three-in-one loose ring detection device according to claim 1, characterized in that, The top of the detection mechanism is equipped with a drilling imaging unit, which includes a conical shell. A camera hole is opened at the top of the conical shell, and a miniature camera is fixedly installed inside the camera hole. An ultrasonic transmitter and a receiving sensor are provided on the shell surface of the conical shell.

3. The three-in-one loose ring detection device according to claim 2, characterized in that, The detection mechanism includes a main shaft, on which a main tube is fitted. The top of the main tube is connected to the bottom of the conical outer shell. A water supply device is provided inside the main tube, and a water injection hole is provided on the surface of the conical outer shell.

4. The three-in-one loose ring detection device according to claim 3, characterized in that, A secondary tube is also slidably mounted on the main shaft. The walls of both the main tube and the secondary tube are provided with the same number of protrusions. Each protrusion is movably connected to a connecting rod. The connecting rods are adapted to each other to form a set of telescopic arms. Each set of telescopic arms is movably connected to a support plate.

5. The three-in-one loose ring detection device according to claim 4, characterized in that, The support plate is also equipped with a stress sensor.

6. The three-in-one loose ring detection device according to claim 5, characterized in that, Ball bearings are evenly distributed on the inner walls of both the main tube and the secondary tube.

7. The three-in-one loose ring detection device according to claim 6, characterized in that, The telescopic rod is also equipped with a coupling, which is connected to the bottom of the secondary tube.

8. The three-in-one loose ring detection device according to claim 1, characterized in that, The drive unit is also equipped with Mecanum wheels at its bottom.

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