Sensor mounting device applied to abrupt slope seismological observation

Abstract

The invention relates to the technical field of seismological observation, in particular to a sensor mounting device applied to abrupt slope seismological observation. Comprising a packaging frame; the fixed cylinder is mounted on the packaging frame; the sliding cylinder is in spline connection with the interior of the fixed cylinder; the sensor is arranged at the lower end of the sliding cylinder; the protection air bag is arranged on the sliding cylinder, and the protection air bag wraps the sensor and is used for protecting the sensor; the control mechanism is arranged on the sliding cylinder and used for changing the shape of the protection air bag. The protection air bag performs wrapping protection on the sensor when descending into a well, the protection air bag firstly makes contact with the well wall when colliding with the well wall, buffering is provided for the sensor through air in the protection air bag so as to weaken impact generated by collision, and after installation is completed, the protection air bag expands and fixes the lower end of the device. Meanwhile, external impurities are prevented from falling into the well to influence the reliability of data monitored by the sensor.

Description

Technical Field

[0001] The present invention relates to the technical field of earthquake observation, and in particular to a sensor installation device used for steep slope earthquake observation. Background Art

[0002] With the combined impact of global climate change and human activities, geological disasters such as landslides and mud-rock flows are becoming more frequent. In mountainous areas with complex geological conditions, secondary disasters such as earthquakes often become the triggering factors of large-scale landslides. In order to improve the effectiveness of disaster prevention and control, real-time monitoring of slope stability has become a key prevention and control measure. Among them, the dynamic data acquisition system based on seismic observation sensors can accurately capture the internal stress-strain response of rock and soil, providing a core basis for disaster warning.

[0003] At present, shallow well deployment is commonly used for steep slope earthquake monitoring: the sensor needs to be fixed on the installation base at the bottom of the well and immersed in the water in the well to achieve in-situ detection of groundwater level fluctuations. However, this technology has significant risks:

[0004] The installation distance between the sensor and the wellhead can be up to several meters. During the continuous downward movement under the action of gravity, the slight vibration of the wellhead will be transmitted to the end of the sensor through the cable, forming a displacement superposition effect. Affected by the geometric deviation of the well wall (±5cm / m) and the swing of the sensor, the sensor after displacement amplification is prone to mechanical collision with the well wall, resulting in the following problems:

[0005] 1. Piezoelectric element damage causes signal drift (measured error can reach ±15%);

[0006] 2. The waterproof sealing structure is damaged, causing a short circuit;

[0007] 3. The reference position offset causes the monitoring data to be distorted.

[0008] Such structural defects directly affect the accuracy of seismic wave P / S phase identification and seriously restrict the reliability of slope stability analysis. Summary of the invention

[0009] In order to overcome the above disadvantages, the present invention provides a sensor installation device for steep slope earthquake observation.

[0010] The technical solution of the present invention is: a sensor installation device for steep slope earthquake observation, comprising:

[0011] Packaging rack;

[0012] A fixed cylinder, mounted on the packaging frame;

[0013] A sliding cylinder, spline-connected in the fixed cylinder;

[0014] A sensor, disposed at the lower end of the sliding cylinder;

[0015] A protective airbag is arranged on the sliding cylinder, and the protective airbag wraps the sensor to protect the sensor;

[0016] The control mechanism is arranged on the sliding cylinder and is used for changing the shape of the protection airbag.

[0017] Furthermore, it is particularly preferred that the control mechanism comprises:

[0018] A sliding frame, slidably connected to the sliding cylinder, and used for squeezing the protective airbag;

[0019] A spring, disposed between the sliding frame and the sliding cylinder;

[0020] A protection component is arranged on the sliding frame and is used to limit the position of the sliding frame.

[0021] In addition, it is particularly preferred that the protective airbag is divided into two parts, the upper part is the air storage part, and the lower part is the expansion part, and the degree of expansion of the expansion part of the protective airbag close to the sliding cylinder is smaller than the degree of expansion of the expansion part of the protective airbag away from the sliding cylinder, which is used to provide stable protection while reducing interference to the sensor.

[0022] In addition, it is particularly preferred that the protection component comprises:

[0023] The transmission cylinder is slidably connected to the sliding frame. The transmission cylinder is rotatably connected to spaced limiting blocks. The limiting blocks are slidably connected to the sliding cylinder, and the limiting blocks are used to squeeze the sliding frame.

[0024] In addition, it is particularly preferred that the protection component further comprises:

[0025] A first electric push rod is disposed on the transmission cylinder;

[0026] The telescopic rod is arranged on the transmission cylinder, the telescopic end of the first electric push rod and the telescopic end of the telescopic rod are fixedly connected to a transmission frame, and the spaced limit blocks and the transmission frame are both driven by gear racks.

[0027] In addition, it is particularly preferred that it further comprises:

[0028] A power mechanism is arranged on the fixed cylinder and is used to provide power for the transmission cylinder. The power mechanism includes:

[0029] A rotating shaft, rotatably connected to the fixed cylinder, the rotating shaft passes through the fixed cylinder, and the rotating shaft is fixedly connected to a spline sleeve;

[0030] The threaded shaft is spline-connected to the spline sleeve, the threaded shaft is threadedly connected to the transmission cylinder, and the threaded shaft is rotationally connected to the sliding cylinder.

[0031] In addition, it is particularly preferred that the power mechanism further comprises:

[0032] A sliding plate, slidably connected to the fixed cylinder, and the sliding plate is slidably connected to the rotating shaft;

[0033] A second electric push rod is fixedly connected to the fixed cylinder, and a telescopic end of the second electric push rod is fixedly connected to the sliding plate;

[0034] The tension spring is arranged between the sliding cylinder and the sliding plate.

[0035] In addition, it is particularly preferred that it further comprises:

[0036] A support mechanism is provided on the sliding cylinder and is used to provide stable support for the sliding cylinder. The support mechanism includes:

[0037] The articulated frames are provided in a plurality and are circumferentially distributed between the sliding cylinder and the sliding frame. A support plate is provided on the articulated frames.

[0038] In addition, it is particularly preferred that the support plates distributed circumferentially are assembled into a cylindrical structure for providing rigid protection for the sensor.

[0039] In addition, it is particularly preferred that when the support plate supports the sliding cylinder, the fastening force thereof is always greater than the tension of the tension spring.

[0040] Compared with the prior art, the present invention has the following advantages: the present invention provides wrapping protection for the sensor when the protective airbag is lowered into the well. When the sensor collides with the well wall, the protective airbag first contacts the well wall and provides a buffer for the sensor through the gas inside the airbag to reduce the impact caused by the collision. After installation, the protective airbag expands and fixes the lower end of the device, thereby preventing foreign impurities from falling into the well and affecting the reliability of the sensor monitoring data.

[0041] Through the cooperation of the second electric push rod and the sliding plate, the tension spring is stretched after the device is fixed, so that the fixed cylinder and the sliding cylinder can be quickly reset to a compact state (i.e., an initial state) when an earthquake occurs, so as to improve the impact resistance of the device when an earthquake occurs, thereby improving the practicality of the device;

[0042] Through the mutual cooperation of the support plates distributed in the circumferential array, rigid support is provided when the device is installed, thereby preventing the reliability of monitoring data from being reduced due to vibration of the sensor. When an earthquake occurs, the support plates distributed in the circumferential array are assembled together into a cylindrical structure to protect the sensor, thereby improving the structural survival rate of the sensor when encountering an earthquake. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0044] Figure 2 It is a three-dimensional structural cross-sectional view of the packaging frame and the fixing tube of the present invention;

[0045] Figure 3 It is a three-dimensional structural schematic diagram of the internal structure of the fixed cylinder of the present invention;

[0046] Figure 4 It is a three-dimensional structural schematic diagram of the positional relationship between the rotating shaft and the threaded shaft of the present invention;

[0047] Figure 5 It is a three-dimensional structural cross-sectional view of the sliding frame and the transmission cylinder of the present invention;

[0048] Figure 6 It is a three-dimensional structural cross-sectional view of the sliding tube and the protective airbag of the present invention;

[0049] Figure 7 It is a three-dimensional structural schematic diagram of the hinged frame of the present invention in an open state;

[0050] Figure 8 A three-dimensional structural cross-sectional view of the protective airbag of the present invention in an expanded state;

[0051] Fig. 9 It is an exploded view of the sliding cylinder of the present invention.

[0052] In the accompanying drawings: 1-packaging frame, 2-fixed cylinder, 3-sliding cylinder, 4-sensor, 5-protective airbag, 6-sliding frame, 7-spring, 8-transmission cylinder, 9-limiting block, 10-first electric push rod, 11-telescopic rod, 12-transmission frame, 13-rotating shaft, 14-spline sleeve, 15-threaded shaft, 16-sliding plate, 17-second electric push rod, 18-tension spring, 19-articulated frame, 20-support plate. DETAILED DESCRIPTION

[0053] The present invention will be further described below in conjunction with the embodiments shown in the accompanying drawings.

[0054] A sensor installation device for steep slope earthquake observation, such as Figure 1-Figure 9As shown, it includes: a packaging frame 1; a fixed cylinder 2, which is installed on the packaging frame 1; a sliding cylinder 3, which is splined in the fixed cylinder 2; a sensor 4, which is arranged at the lower end of the sliding cylinder 3; a protective airbag 5, which is arranged on the sliding cylinder 3, and the protective airbag 5 wraps the sensor 4, so as to protect the sensor 4; the protective airbag 5 is divided into an upper and lower part, wherein the upper part is an air storage part, and the lower part is an expansion part, the expansion degree of the expansion part of the protective airbag 5 close to the sliding cylinder 3 is smaller than the expansion degree of the expansion part of the protective airbag 5 away from the sliding cylinder 3, so as to provide stable protection while reducing interference to the sensor 4; a control mechanism is arranged on the sliding cylinder 3, and is used to change the shape of the protective airbag 5.

[0055] like Figure 3-Figure 6 , Figure 8 and Fig. 9 As shown, the control mechanism includes: a sliding frame 6, which is slidably connected to the sliding cylinder 3 and is used to squeeze the protection airbag 5; a spring 7, which is arranged between the sliding frame 6 and the sliding cylinder 3; and a protection component, which is arranged on the sliding frame 6 and is used to limit the sliding frame 6.

[0056] In the above scheme, the sensor 4 is protected by the protective airbag 5 (eg Figure 6 As shown), and after the sensor 4 reaches the specified position (i.e., the monitoring position), the shape of the protective airbag 5 is changed, so as to provide targeted protection for the movement state and detection state of the sensor 4; the protective airbag 5 is made of elastic material, and the protective airbag 5 is divided into an upper and lower part (the upper part is the air storage part, and the lower part is the expansion part). The air storage part of the protective airbag 5 can only be deformed in the vertical direction, and the expansion part of the protective airbag 5 can be circumferentially expanded and deformed to produce compression with the well wall and fix the sensor 4. A circular cover is provided on the lower side of the packaging frame 1, which is used to seal the wellhead after the installation of the device is completed, so as to prevent external impurities from affecting the monitoring environment in the well.

[0057] like Figure 3-Figure 6 As shown, the protection component includes: a transmission cylinder 8, which is slidably connected to the sliding frame 6, and the transmission cylinder 8 is rotatably connected to spaced limit blocks 9, which are slidably connected to the sliding cylinder 3 and are used to squeeze the sliding frame 6.

[0058] like Figure 5 and Figure 6 As shown, the protection component also includes: a first electric push rod 10, which is arranged on the transmission cylinder 8; a telescopic rod 11, which is arranged on the transmission cylinder 8, the telescopic end of the first electric push rod 10 and the telescopic end of the telescopic rod 11 are commonly fixed to a transmission frame 12, and the spaced limit blocks 9 and the transmission frame 12 are transmitted through gear racks.

[0059] In the above scheme, the purpose is to control the positional relationship between the transmission cylinder 8 and the sliding frame 6 through the limit block 9. The first electric push rod 10 and the telescopic rod 11 are symmetrically distributed, and the center of symmetry of the two is located on the axis of the transmission cylinder 8. It is used to prevent the telescopic end of the first electric push rod 10 from being damaged by excessive deflection force. The limit blocks 9 are distributed in a circumferential array on the transmission cylinder 8, thereby ensuring the stability of the force direction between the transmission cylinder 8 and the sliding frame 6.

[0060] like Figure 2-Figure 7 As shown, it also includes: a power mechanism, which is arranged on the fixed cylinder 2 and is used to provide power for the transmission cylinder 8. The power mechanism includes: a rotating shaft 13, which is rotatably connected to the fixed cylinder 2, the rotating shaft 13 passes through the fixed cylinder 2, and the rotating shaft 13 is fixedly connected with a spline sleeve 14; a threaded shaft 15, which is splined to the spline sleeve 14, the threaded shaft 15 is threadedly connected to the transmission cylinder 8, and the threaded shaft 15 is rotatably connected to the sliding cylinder 3.

[0061] like Figure 4 and Figure 8 As shown, the power mechanism also includes: a sliding plate 16, which is slidably connected to the fixed cylinder 2, and the sliding plate 16 is slidably connected to the rotating shaft 13; a second electric push rod 17, which is fixed to the fixed cylinder 2, and the telescopic end of the second electric push rod 17 is fixed to the sliding plate 16; a tension spring 18, which is arranged between the sliding cylinder 3 and the sliding plate 16.

[0062] In the above scheme, the purpose is to detect that after an earthquake occurs, the sensor 4 is controlled to retract by the first electric push rod 10, so as to protect the sensor 4 and prevent the earthquake from damaging the sensor 4. A handle is provided on the upper side of the rotating shaft 13. The handle of the rotating shaft 13 is located above the packaging frame 1 and is detachable. After installation, it can be removed to prevent accidental touch caused by external factors. A rotation self-locking device is provided at the rotation point of the rotating shaft 13 and the fixed cylinder 2 (an existing device, not shown in the figure, is used to control the relative state between the rotating shaft 13 and the fixed cylinder 2).

[0063] Working process: When using this device to install the sensor 4 on a steep slope, the user first builds a monitoring well at a pre-buried location perpendicular to the steep slope surface. After the monitoring well is built, the user selects a fixing tube 2 of appropriate length according to the well depth to ensure that the sensor 4 can be stably immersed in water. Then the user moves the device to the monitoring well, points the sensor 4 toward the well and controls the device to gradually move downward along the direction of the monitoring well. When the device moves downward, since the sensor 4 is wrapped with a protective airbag 5, if the sensor 4 collides with the well wall due to shaking, the protective airbag 5 first contacts the well wall and provides a buffer for the sensor 4 through the gas therein, so as to reduce the impact caused by the collision, thereby protecting the sensor 4 from damage.

[0064] When the circular cover on the lower side of the packaging frame 1 contacts the wellhead, the device stops moving downward, the user temporarily fixes the packaging frame 1 (to prevent the packaging frame 1 from rotating), and at the same time controls the telescopic end of the second electric push rod 17 to extend, and the telescopic end of the second electric push rod 17 drives the sliding plate 16 to move downward, and the sliding cylinder 3 and the parts thereon move downward synchronously with the sliding plate 16 and the tension spring 18 by their own gravity. At this time, the sensor 4 moves down to the monitoring position in the well, and then the user turns the upper side handle of the rotating shaft 13, and the rotating shaft 13 drives the threaded shaft 15 to rotate through the spline sleeve 14, and the rotating shaft 13 drives the threaded shaft 15 to rotate. Since the sliding cylinder 3 limits the rotation of the transmission cylinder 8 through the limit block 9, the threaded shaft 15 drives the transmission cylinder 8 to move downward through its thread when rotating, and the transmission cylinder 8 drives the sliding frame 6 to move downward through the limit blocks 9 distributed in the circumferential array, and the sliding frame 6 moves downward to synchronously squeeze the gas storage part and the spring 7 of the protection airbag 5. In this process, the gas in the gas storage part of the protection airbag 5 is squeezed and gradually moves toward its expansion part, so that its expansion part gradually expands, until the expansion part of the protection airbag 5 is squeezed to the well wall and the sliding cylinder 3 is fixed (the state of the expansion part of the protection airbag 5 is as shown in FIG. Figure 8 As shown), the user controls the telescopic end of the second electric push rod 17 to retract, and the telescopic end of the second electric push rod 17 drives the sliding plate 16 to move upward. Since the sliding cylinder 3 is fixed at this time, the sliding plate 16 moves upward and stretches the tension spring 18. The user seals and fixes the packaging frame 1 to the wellhead of the monitoring well. The user removes the turning handle on the rotating shaft 13 and locks the relative position of the two through the rotating self-locking device between the rotating shaft 13 and the fixed cylinder 2. At this time, the installation of the device is completed.

[0065] During the expansion process of the expansion part of the protection airbag 5, since the expansion degree of the side of the protection airbag 5 close to the sensor 4 is smaller than that of the other side, when the expansion part of the protection airbag 5 expands and fixes the sliding cylinder 3, the contact between the protection airbag 5 and the sensor 4 is gradually lost, so that the sensor 4 is completely immersed in water to ensure its monitoring accuracy, and the inflated protection airbag 5 blocks the upper side of the sensor 4 to prevent foreign debris from falling into the monitoring well and disturbing the monitoring data of the sensor 4, thereby ensuring the reliability and stability of the monitoring data of the sensor 4.

[0066] When an earthquake occurs, the sensor 4 monitors and determines the occurrence of an earthquake through data, and then controls the telescopic end of the first electric push rod 10 to retract. The telescopic end of the first electric push rod 10 drives the transmission frame 12 to move downward. During this process, the telescopic end of the telescopic rod 11 moves synchronously with the transmission frame 12, and the transmission frame 12 drives the limit blocks 9 distributed in the circumferential array to rotate through gears and racks until the limit blocks 9 lose the cover of the sliding frame 6. The spring 7 drives the sliding frame 6 to move upward rapidly, and the sliding frame 6 is reset. The protective airbag 5 is reset at the same time and loses the fixation to the sliding cylinder 3. At this time, the tension spring 18 drives the sliding cylinder 3 and the parts thereon to move upward and reset, so that the protective airbag 5 resumes the wrapping of the sensor 4, and the device shrinks to a compact state (that is, the sliding cylinder 3 is in close contact with the fixed cylinder 2) to resist the impact caused by the earthquake and prevent the earthquake from damaging the sensor 4.

[0067] like Figure 1-Figure 3 , Figure 7 and Figure 8 As shown, it also includes: a supporting mechanism, which is arranged on the sliding cylinder 3 and is used to provide stable support for the sliding cylinder 3. The supporting mechanism includes: a hinge frame 19, which has a plurality of hinge frames 19 and is circumferentially distributed between the sliding cylinder 3 and the sliding frame 6. A supporting plate 20 is arranged on the hinge frame 19. The circumferentially distributed supporting plates 20 are assembled into a cylindrical structure to provide rigid protection for the sensor 4. When the supporting plate 20 supports the sliding cylinder 3, its fastening force is always greater than the tension of the tension spring 18.

[0068] In the above scheme, it is intended to provide a rigid support for the device, so as to prevent the vibration caused by external factors after the device is installed from being transmitted to the sensor 4, causing its position in the monitoring well to change continuously, thus affecting the monitoring result; when the above sliding frame 6 moves downward relative to the sliding cylinder 3, the sliding frame 6 synchronously drives the support plates 20 distributed in the circumferential array to expand outward through the articulated frame 19 until the support plates 20 contact the well wall and provide a rigid support for the device (such as Figure 7 As shown), at this time, the expansion part of the protective airbag 5 synchronously contacts the well wall and provides soft support for the device, thereby preventing the sensor 4 from reducing the reliability of the monitoring data due to vibration, and the support plate 20 can also replace the tension spring 18 with a tension spring with a larger elastic coefficient for the hard support between the device and the well wall, so as to improve the reaction sensitivity of the device when encountering an earthquake. When an earthquake occurs (that is, when the above-mentioned sliding frame 6 moves upward and resets relative to the sliding cylinder 3), the sliding frame 6 synchronously drives the circumferential array distributed support plate 20 to retract through the circumferential array distributed articulated frame 19, and the circumferential array distributed support plates 20 are jointly assembled into a tubular structure for protecting the sensor 4, thereby improving the structural survival rate of the sensor 4 when encountering an earthquake.

[0069] The above description is only an embodiment of the present invention and is not intended to limit the present invention. Any equivalent substitution made within the principle of the present invention should be included in the protection scope of the present invention. The content not elaborated in detail in the present invention belongs to the existing technology known to the technicians in this professional field.

Claims

1. A sensor installation device for steep slope earthquake observation, characterized in that: include: Packaging frame (1); A fixed cylinder (2) mounted on the packaging frame (1); A sliding cylinder (3) is spline-connected in the fixed cylinder (2); A sensor (4) is arranged at the lower end of the sliding cylinder (3); A protective airbag (5) is arranged on the sliding cylinder (3), and the protective airbag (5) wraps the sensor (4) to protect the sensor (4); A control mechanism is arranged on the sliding cylinder (3) and is used to change the shape of the protection airbag (5).

2. A sensor installation device for steep slope earthquake observation according to claim 1, characterized in that: The control mechanism comprises: A sliding frame (6) is slidably connected to the sliding cylinder (3) and is used to squeeze the protective airbag (5); A spring (7) is arranged between the sliding frame (6) and the sliding cylinder (3); A protection component is arranged on the sliding frame (6) and is used to limit the position of the sliding frame (6).

3. A sensor installation device for steep slope earthquake observation according to claim 2, characterized in that: The protective airbag (5) is divided into two parts, the upper part is the air storage part, and the lower part is the expansion part. The expansion degree of the expansion part of the protective airbag (5) close to the sliding cylinder (3) is smaller than the expansion degree of the expansion part of the protective airbag (5) away from the sliding cylinder (3), so as to provide stable protection while reducing interference to the sensor (4).

4. A sensor installation device for steep slope earthquake observation according to claim 2, characterized in that: The protection component comprises: A transmission cylinder (8) is slidably connected to the sliding frame (6); the transmission cylinder (8) is rotatably connected to spaced limit blocks (9); the limit blocks (9) are slidably connected to the sliding cylinder (3); and the limit blocks (9) are used to squeeze the sliding frame (6).

5. A sensor installation device for steep slope earthquake observation according to claim 4, characterized in that: The protection component also includes: A first electric push rod (10) is arranged on the transmission cylinder (8); The telescopic rod (11) is arranged on the transmission cylinder (8); the telescopic end of the first electric push rod (10) and the telescopic end of the telescopic rod (11) are fixedly connected to a transmission frame (12); and the spaced-apart limit blocks (9) and the transmission frame (12) are both driven by gear racks.

6. A sensor installation device for steep slope earthquake observation according to claim 5, characterized in that include: A power mechanism is arranged on the fixed cylinder (2) and is used to provide power for the transmission cylinder (8), and the power mechanism comprises: A rotating shaft (13) is rotatably connected to the fixed cylinder (2), the rotating shaft (13) passes through the fixed cylinder (2), and the rotating shaft (13) is fixedly connected to a spline sleeve (14); The threaded shaft (15) is spline-connected to the spline sleeve (14), the threaded shaft (15) is threadedly connected to the transmission cylinder (8), and the threaded shaft (15) is rotationally connected to the sliding cylinder (3).

7. A sensor installation device for steep slope earthquake observation according to claim 6, characterized in that: The power mechanism also includes: A sliding plate (16) is slidably connected to the fixed cylinder (2), and the sliding plate (16) is slidably connected to the rotating shaft (13); A second electric push rod (17) is fixedly connected to the fixed cylinder (2), and a telescopic end of the second electric push rod (17) is fixedly connected to the sliding plate (16); A tension spring (18) is arranged between the sliding cylinder (3) and the sliding plate (16).

8. A sensor installation device for steep slope earthquake observation according to claim 7, characterized in that: include: A support mechanism is arranged on the sliding cylinder (3) and is used to provide stable support for the sliding cylinder (3), and the support mechanism comprises: The articulated frames (19) are provided in a plurality and are circumferentially distributed between the sliding cylinder (3) and the sliding frame (6). A support plate (20) is provided on the articulated frames (19).

9. A sensor installation device for steep slope earthquake observation according to claim 8, characterized in that: The support plates (20) distributed in the circumferential direction are assembled together to form a cylindrical structure, which is used to provide rigid protection for the sensor (4).

10. A sensor installation device for steep slope earthquake observation according to claim 8, characterized in that: When the support plate (20) supports the sliding cylinder (3), its fastening force is always greater than the tension of the tension spring (18).

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