A seismic geomagnetic field disturbance observation sensor fixing device

Abstract

The utility model discloses a seismic geomagnetic field disturbance observation sensor fixing device, including active support, passive support and leveling mechanism; the active support and passive support are located below the two ends of the sensor to support the magnetic bar sensor; the main structure of the active support and the passive support is the same, both including a balance base and a support seat; the balance base is rectangular in shape, carrying the support seat and the leveling mechanism; the support seat is located on the balance base, and is used to carry the sensor to be detected. The seismic geomagnetic field disturbance observation sensor fixing device provided by the utility model uses active support and passive support at both ends to carry a sensor more than one meter long, and uses the cooperation between a laser balancer and a receiver to adjust the passive support, so that both supports can maintain a horizontal position, which can effectively reduce the floor space and size of the fixing device, thereby reducing the difficulty of adjustment by operators on site and improving ease of use.

Description

Technical Field

[0001] The utility model relates to a sensor fixing device for observing earthquake geomagnetic field disturbance. Background Art

[0002] In order to study the electromagnetic field changes related to the development and occurrence of earthquakes, seismic electromagnetic disturbance observation, as one of the means to capture short-term anomalies of earthquakes, has been widely valued by seismologists at home and abroad in recent years. Inductive magnetic sensors are sensors that use Faraday's law of electromagnetic induction to measure magnetic field changes and are one of the important components of seismic electromagnetic disturbance observation instruments. According to the requirements of the seismic electromagnetic disturbance observation specification, three inductive magnetic sensors are generally required to observe the geomagnetic field signals in three mutually perpendicular directions (north-south, east-west and vertical to the ground); and equipped with a complete set of sensor fixtures, including horizontal and vertical directions, for placing and installing inductive magnetic sensors, which is convenient for field mobile comparative observations and fixed station observations. Among them, the inductive magnetic sensor fixture must ensure the high-precision installation orientation of the sensor.

[0003] At present, common inductive sensors are usually placed directly on the ground or buried in shallow soil layers in the horizontal direction during field experiments or seismic station observations, and are fixed by brackets for vertical observations. However, traditional installation and fixing methods cannot guarantee the positioning accuracy of parallel or orthogonal sensors, which affects the data quality of the observation equipment and causes errors in the identification and analysis of electromagnetic observation data.

[0004] At the same time, due to the shallow soil layer or uneven ground during on-site operations, the operator is required to manually adjust the sensor support. Adjustment on the ground is difficult, and it is even more difficult to adjust in the shallow soil layer under the surface. Therefore, traditional supports are difficult to apply on the operation site and cannot guarantee the stability and accuracy of the detection.

[0005] In addition, the sensor used for detection is a rod-type magnetic bar with a length of more than one meter. If it is supported by a traditional horizontal base, a very long base plate is required, which not only increases the detection cost, but also makes it difficult to level the overly long base plate. What's more, the narrow space in the shallow soil pit makes it even more difficult to level the long base plate. Utility Model Content

[0006] The technical problem to be solved by the utility model is to improve the traditional sensor support so that it can be quickly adjusted on site, ensure that it can be directly used on site, reduce the operation process, and increase the stability of detection.

[0007] In order to solve the above technical problems, the technical solution of the utility model is: a seismic geomagnetic field disturbance observation sensor fixing device, including active support, passive support and leveling mechanism; the active support and passive support are located below the two ends of the sensor to support the magnetic bar sensor; the main structure of the active support and passive support is the same, both including a balance base and a support base; the balance base is rectangular in shape, carrying the support base and the leveling mechanism; the support base is located on the balance base, and is used to carry the sensor to be detected;

[0008] The leveling mechanism includes a laser level and a receiver; the laser level is located on the support seat of the active support, facing the driven support; the receiver is located on the support seat of the driven support, facing the laser level, and receives the laser emitted by the laser level.

[0009] Furthermore, at least three balancing screws are provided on the balancing bases of the active support and the passive support. The balancing screws pass through the balancing base and contact the ground. The height is adjusted by nuts to achieve the horizontal position of the balancing base.

[0010] Furthermore, a plurality of the balancing screws are distributed below the balancing base and correspond to each other to maintain the stability of the balancing base, that is, a three-point support of a triangle or a four-point support of a rectangle.

[0011] Furthermore, at least two support seats are provided, which are symmetrically distributed on the balance base, and the arc surface integrally processed thereon matches with the outer circle of the sensor to be detected to form a support.

[0012] Furthermore, a support plate is provided between two adjacent support seats, and the support plate is fixedly connected to the support seat and the balance base to enhance the strength of the support seat.

[0013] Furthermore, a bubble level is provided on the active support, and the bubble level is located on the surface of the balancing base and is used to adjust the horizontal position of the active support.

[0014] Furthermore, the laser level is vertically connected to the support base and determines the horizontal direction by emitting laser. When the active support is adjusted to the horizontal, its laser also remains horizontal.

[0015] Furthermore, the receiver is located on the support base at a position relative to the laser level, and is provided with a sensing disk and an indicator light. When the laser emitted by the laser level is received by the sensing disk, the indicator light turns green, indicating that the driven support and the active support are located at the same horizontal position; when the sensing disk cannot sense the laser, the indicator light turns red, and the driven support needs to be continuously adjusted until the indicator light turns green.

[0016] Furthermore, a hydraulic support is provided below the active support and the passive support balancing base to replace the balancing screws. There are no less than three hydraulic supports distributed below the balancing base, and their height is adjusted by hydraulic pressure to thereby adjust the horizontal state of the balancing base.

[0017] Compared with the prior art, the utility model provides a seismic geomagnetic field disturbance observation sensor fixing device which uses active supports and passive supports at both ends to carry a sensor more than one meter long. The sensor is first leveled using a bubble level on the active support, and then the passive support is adjusted using the cooperation between a laser balancer and a receiver, so that both supports can maintain a horizontal position to support the sensor. This can effectively reduce the floor space and size of the fixing device, thereby reducing the difficulty of adjustments by operators on site and improving ease of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The front view of the utility model is shown.

[0019] Figure 2 A structural schematic diagram of the active support of the utility model is shown.

[0020] Among them: 1. Active support, 2. Driven support, 3. Leveling mechanism, 4. Balance base, 5. Support seat, 6. Laser level, 7. Receiver, 8. Balance screw, 9. Bubble level, 10. Induction plate, 11. Indicator light, 12. Support plate, 13. Sensor to be detected, 14. Compass. DETAILED DESCRIPTION

[0021] As shown in the figure, a seismic geomagnetic field disturbance observation sensor fixing device includes an active support 1, a passive support 2 and a leveling mechanism 3; the active support 1 and the passive support 2 are located below the two ends of the sensor to support the magnetic bar type sensor; the main structure of the active support 1 and the passive support 2 is the same, both including a balance base 4 and a support base 5; the balance base 4 is rectangular in shape and carries the support base 5 and the leveling mechanism 3; the support base 5 is located on the balance base 4 and is used to carry the sensor to be detected;

[0022] The leveling mechanism 3 includes a laser level 6 and a receiver 7; the laser level 6 is located on the support seat 5 of the active support 1, facing the driven support 2; the receiver 7 is located on the support seat 5 of the driven support 2, facing the laser level 6, and receives the laser emitted by the laser level 6.

[0023] Furthermore, at least three balancing screws 8 are provided on the balancing base 4 of the active support 1 and the passive support 2. The balancing screws 8 pass through the balancing base 4 and contact the ground. The height is adjusted by nuts to achieve the horizontal position of the balancing base 4.

[0024] Furthermore, a plurality of the balancing screws 8 are distributed below the balancing base 4 and correspond to each other to maintain the stability of the balancing base 4 , namely, a three-point support of a triangle or a four-point support of a rectangle.

[0025] Furthermore, at least two support seats 5 are provided, which are symmetrically distributed on the balancing base 4, and the arc surface integrally processed thereon matches with the outer circle of the sensor to be detected to form a support.

[0026] Furthermore, a support plate 12 is provided between two adjacent support seats 5 , and the support plate 12 is fixedly connected to the support seat 5 and the balancing base 4 to enhance the strength of the support seat 5 .

[0027] Furthermore, a bubble level 9 is provided on the active support 1 . The bubble level 9 is located on the surface of the balancing base 4 and is used to adjust the horizontal position of the active support 1 .

[0028] Furthermore, the laser level 6 is vertically connected to the support base 5 and determines the horizontal direction by emitting laser. When the active support 1 is adjusted to a horizontal level, its laser also remains horizontal.

[0029] Furthermore, the receiver 7 is located on the support base 5 at a position relative to the laser level 6, and is provided with a sensing disk 10 and an indicator light 11. When the laser emitted by the laser level 6 is received by the sensing disk 10, the indicator light 11 lights up green, indicating that the driven support 2 and the active support 1 are located at the same horizontal position; when the sensing disk 10 cannot sense the laser, the indicator light 11 lights up red, and it is necessary to continue to adjust the driven support 2 until the indicator light 11 lights up green.

[0030] Furthermore, a hydraulic support is provided below the balancing base 4 of the active support 1 and the passive support 2. There are no less than three hydraulic supports distributed below the balancing base 4. The height of the hydraulic supports is adjusted by hydraulic pressure, thereby adjusting the horizontal state of the balancing base 4.

Claims

1. A seismic geomagnetic field disturbance observation sensor fixing device, characterized in that: It includes an active support, a passive support and a leveling mechanism; the active support and the passive support are located below the two ends of the sensor to support the magnetic bar sensor; the main structures of the active support and the passive support are the same, both including a balancing base and a supporting base; the balancing base is rectangular in shape and carries the supporting base and the leveling mechanism; the supporting base is located on the balancing base and is used to carry the sensor to be detected; The leveling mechanism includes a laser level and a receiver; the laser level is located on the support seat of the active support, facing the driven support; the receiver is located on the support seat of the driven support, facing the laser level, and receives the laser emitted by the laser level.

2. A device for fixing a sensor for observing earthquake geomagnetic field disturbance according to claim 1, characterized in that: The active support and the passive support balancing bases are both provided with no less than three balancing screws, the balancing screws penetrate the balancing base and contact the ground, and the height is adjusted by nuts to achieve the horizontal position of the balancing base.

3. A seismic geomagnetic field disturbance observation sensor fixing device according to claim 2, characterized in that: A plurality of balancing screws are distributed below the balancing base and correspond to each other to maintain the stability of the balancing base.

4. The device for fixing a seismic geomagnetic field disturbance observation sensor according to claim 1, characterized in that: The support base is provided with no less than two and symmetrically distributed on the balance base, and the arc surface integrally processed thereon matches with the outer circle of the sensor to be detected to form a support.

5. The device for fixing a seismic geomagnetic field disturbance observation sensor according to claim 1, characterized in that: The active support is provided with a bubble level, which is located on the surface of the balancing base and is used to adjust the horizontal position of the active support.

6. The device for fixing a sensor for observing earthquake geomagnetic field disturbance according to claim 1, characterized in that: A compass or a compass is also arranged on the active support, located on the surface of the balance base, for adjusting the horizontal direction of the active support.

7. The device for fixing a seismic geomagnetic field disturbance observation sensor according to claim 1, characterized in that: The laser level is vertically connected to the support seat and determines the horizontal direction by emitting laser. When the active support is adjusted to be horizontal, the laser also remains horizontal.

8. The device for fixing a seismic geomagnetic field disturbance observation sensor according to claim 7, characterized in that: The receiver is located on the support base at a position relative to the laser level, and is provided with a sensing disk and an indicator light. When the laser emitted by the laser level is received by the sensing disk, the indicator light turns green, indicating that the driven support and the active support are located at the same horizontal position; when the sensing disk cannot sense the laser, the indicator light turns red, and the driven support needs to be continuously adjusted until the indicator light turns green.

9. The device for fixing a sensor for observing earthquake geomagnetic field disturbance according to claim 1, characterized in that: A hydraulic support is arranged below the active support and the passive support balancing base. There are no less than three hydraulic supports distributed below the balancing base. The height of the hydraulic supports is adjusted by hydraulic pressure, thereby adjusting the horizontal state of the balancing base.

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