A three-dimensional seismic sensor deployment auxiliary orientation device

Abstract

This utility model discloses an auxiliary orientation device for the deployment of a three-dimensional seismic sensor, comprising a longitudinal support module, a lateral adjustment module, a parallel linkage adjustment module, and an auxiliary orientation module. The top of the longitudinal support module is threadedly connected to the bottom of the lateral adjustment module. A parallel linkage adjustment module is installed on the upper part of the lateral adjustment module, and the auxiliary orientation module is installed at both ends of the parallel linkage adjustment module. The auxiliary orientation module includes a compass and a pointing plate. A compass is installed at one end of the parallel linkage adjustment module, and a pointing plate parallel to the north-south scale of the compass is installed at the other end. This auxiliary orientation device can effectively reduce the influence of various factors such as field station deployment conditions, the alignment of the north-south equipment with the reference line, the parallelism / coincidence of the reference line with manual visual inspection, and the differences in the technical level of the deployment personnel. This utility model has the characteristics of cost saving, simple use, convenient transportation, and easy maintenance, and can be applied to the deployment of field stations with good application prospects.

Description

Technical Field

[0001] This utility model belongs to the technical field of earthquake observation devices, specifically relating to an auxiliary orientation device for the deployment of a three-dimensional earthquake sensor. Background Technology

[0002] The core task of seismic sensors is to accurately record the entire process of ground motion triggered by earthquakes, providing real, reliable, and complete observational data for earthquake science research. In modern seismology, the accurate orientation of the three-axis seismic sensors is crucial for obtaining high-quality seismic observation data and conducting earthquake analysis based on that data. The azimuth deviation of seismic sensors mainly originates from two aspects: the instrument manufacturing process and the instrument deployment process. During manufacturing, modern seismic sensors typically employ an integrated design, meaning the three axes of the sensor are orthogonal, with orthogonality deviations of less than 0.9° across all three axes. Passing the final inspection of the instrument ensures the orthogonality of the three axes. Therefore, the azimuth deviation of seismic sensors primarily stems from the instrument deployment process.

[0003] The traditional steps for deploying seismic sensors are as follows: First, use a compass, handheld GPS, or mobile phone compass to determine true north at the planned location; then, draw a reference line for true north; finally, set up the seismic sensor, ensuring the reference line is parallel or coincident with the instrument's north direction; and finally, fine-tune the sensor's leveling screws to center the circular bubble level. However, in actual deployment, significant errors or even mistakes can easily occur due to factors such as limited space in the field, different seismic sensor specifications, the alignment of the north-pointing device with the reference line, the parallelism / coincidence of the reference line with manual observation, sensor leveling, and differences in the experience and skill level of the personnel involved in the deployment. While using a combination of GPS differential measurement and a theodolite to determine true north provides some accuracy, this method is heavily influenced by the observation environment, has a cumbersome process, and poor equipment portability, making it impractical for field deployment of seismic sensors.

[0004] To reduce the impact of azimuth deviations caused by factors such as field instrument deployment conditions, seismic sensor shape, north-pointing equipment and reference line delineation, reference line parallelism / coincidence with manual visual inspection, seismic sensor leveling, and differences in the skill level of deployment personnel, and to minimize orientation errors, developing a practical, portable, and easy-to-operate auxiliary orientation device for the installation of three-dimensional seismic sensors that meets deployment requirements is an excellent solution. Currently, there is a lack of auxiliary orientation devices on the market specifically designed for the deployment of seismic monitoring equipment that can reduce orientation errors and are easy to carry, requiring further research and development. Utility Model Content

[0005] This utility model provides an auxiliary orientation device for the deployment of a three-dimensional seismic sensor. The auxiliary orientation device includes a longitudinal support module, a lateral adjustment module, a parallel linkage adjustment module, and an auxiliary orientation module. It is characterized by strong practicality, portability, and ease of operation. It can effectively reduce the influence of various factors such as field station deployment conditions, the shape of the seismic sensor equipment, the delineation of the north-pointing equipment and the reference line, the parallelism / coincidence of the reference line with manual visual inspection, and the differences in the technical level of the deployment personnel.

[0006] To mitigate the aforementioned impacts, the technical solution provided by this utility model is as follows:

[0007] This utility model embodiment provides an auxiliary orientation device for the deployment of a three-dimensional seismic sensor, including a longitudinal support module (1), a lateral adjustment module (2), a parallel linkage adjustment module (3), and an auxiliary orientation module (4); wherein, the top of the longitudinal support module (1) is threadedly connected to the bottom of the lateral adjustment module (2); the lateral adjustment module (2) is equipped with the parallel linkage adjustment module (3) on its upper part, and the auxiliary orientation module (4) is installed at both ends of the parallel linkage adjustment module (3). The auxiliary orientation module (4) includes a compass (401) and a pointing plate (402). One end of the parallel linkage adjustment module (3) is equipped with the compass (401) with a fixed scale, and the other end is equipped with the pointing plate (402) which is parallel to the north-south scale of the compass (401).

[0008] The parallel linkage adjustment module (3) includes a first telescopic square tube (301), a second telescopic square tube (302), and a telescopic tube reference scale (303). The second telescopic square tube (302) is disposed inside the first telescopic square tube (301) and can move along the left and right directions of the first telescopic square tube (301). The first telescopic square tube (301) and the second telescopic square tube (302) are both provided with telescopic tube reference scales (303). The first telescopic square tube (301) is installed in the inner cavity of the upper support frame (203) of the horizontal adjustment module (2), and the first telescopic square tube (301) and the second telescopic square tube (302) can be retracted into the upper support frame (203).

[0009] In a preferred embodiment of this utility model, the longitudinal support module (1) includes a bottom helical structure (101), a tripod (102), a meshing gear (103), a telescopic support column (104), a fixed helical structure (105), and a top internal thread (106). The three tripods (102) are connected to the bottom of the telescopic support column (104) through the meshing gear (103). Each tripod (102) has a bottom helical structure (101) fixed at its bottom. The fixed helical structure (105) is disposed on the side of the telescopic support column (104). The top internal thread (106) is disposed on the top of the telescopic support column (104) and is used to be threadedly connected to the bottom tube bolt (201) of the lateral adjustment module (2).

[0010] In a preferred embodiment of this utility model, the lateral adjustment module (2) includes a bottom external tube bolt (201), a locking nut (202), and an upper support frame (203). The bottom external tube bolt (201) is vertically connected to the upper support frame (203). The locking nut (202) is located on the bottom external tube bolt (201). After the bottom external tube bolt (201) is threadedly connected to the top internal thread (106), the locking nut (202) is spirally connected to the bottom external tube bolt (201). The locking nut (202) can lock the lateral adjustment module (2) and the longitudinal support module (1). At the same time, the locking nut (202) can finely adjust the rotation angle of the auxiliary orientation module (4).

[0011] Compared with the prior art, this utility model provides an auxiliary orientation device for the deployment of a three-dimensional seismic sensor, which has the following beneficial effects: The auxiliary orientation device includes a longitudinal support module, a lateral adjustment module, a parallel linkage adjustment module, and an auxiliary orientation module. It is highly practical, portable, and easy to operate, and can effectively reduce the influence of various factors such as field station deployment conditions, the alignment of the north-pointing equipment with the reference line, the parallelism / coincidence of the reference line with manual visual inspection, and the differences in the technical level of the deployment personnel. Therefore, this utility model has the characteristics of cost saving, simple use, convenient transportation, and easy maintenance, and can be applied to the deployment of field stations with good application prospects. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1This is a front view of an auxiliary orientation device for deploying a three-dimensional seismic sensor, provided in an embodiment of this application.

[0014] Figure 2 This is a top view of an auxiliary orientation device for deploying a three-dimensional seismic sensor, provided in an embodiment of this application.

[0015] Explanation of reference numerals in the attached drawings: Longitudinal support module 1, bottom helical structure 101, tripod 102, meshing gear 103, telescopic support column 104, fixed helical structure 105, top internal thread 106, lateral adjustment module 2, bottom tube external bolt 201, locking nut 202, upper load-bearing frame 203, parallel linkage adjustment module 3, first telescopic square tube 301, second telescopic square tube 302, telescopic tube reference scale 303, auxiliary orientation module 4, compass 401, north reference plate 402, circular level bubble 403. Detailed Implementation

[0016] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application. The terms "upper," "lower," "front," "rear," "left," and "right," etc., used when describing the installation position or direction of the structure or components in this embodiment are based on the orientation shown in the accompanying drawings. They are merely for convenience of description, used to distinguish the relative positions of various components or directions, and do not represent the orientation of the device or functional component in this embodiment during use.

[0017] like Figure 1 and Figure 2 As shown, this utility model embodiment provides an auxiliary orientation device for deploying a three-dimensional seismic sensor, including a longitudinal support module 1, a lateral adjustment module 2, a parallel linkage adjustment module 3, and an auxiliary orientation module 4. The top of the longitudinal support module 1 is threadedly connected to the bottom of the lateral adjustment module 2; the parallel linkage adjustment module 3 is mounted on the upper part of the lateral adjustment module 2; the auxiliary orientation module 4 is installed at both ends of the parallel linkage adjustment module 3, and the auxiliary orientation module 4 includes a compass 401 and a pointing plate 402. One end of the parallel linkage adjustment module 3 is provided with a compass 401 with fixed graduations, and the other end is provided with a pointing plate 402 parallel to the north-south graduations of the compass 401.

[0018] The longitudinal support module 1 includes a bottom helical structure 101, tripods 102, meshing gears 103, a telescopic support column 104, a fixing helical structure 105, and a top internal thread 106. Three tripods 102 are connected to the bottom of the telescopic support column 104 via meshing gears 103. Each tripod 102 has a bottom helical structure 101 fixed to its bottom. The fixing helical structure 105 is located on the side of the telescopic support column 104. The multi-section support column 104 can be fixed and moved via the fixing helical structure 105. The top internal thread 106 is located at the top of the telescopic support column 104 and is used for threaded connection with the bottom external bolt 201 of the lateral adjustment module 2.

[0019] The tripod 102 provides stable support. Coarse leveling of the auxiliary orientation module 4 is achieved by adjusting the position of the tripod legs, while fine leveling of the auxiliary orientation module 4 is achieved by adjusting the bottom helical structure 101. The meshing gear 103 is located at the top of the tripod 102; adjusting the meshing degree of the meshing gear 103 maintains the stability of the tripod 102. Adjusting the fixing helical structure 105 brakes the retractable support column 104. The retractable support column 104 serves to support the lateral adjustment module 2, the parallel linkage adjustment module 3, and the auxiliary orientation module 4; it is also retractable for easy carrying and can be adjusted to the appropriate height according to the deployment requirements of the seismic sensor. The top of the retractable support column 104 includes an internal thread 106, maintaining a threaded connection with the lateral adjustment module 2.

[0020] The support system consisting of the tripod 102 and the telescopic support column 104 of the longitudinal support module 1 can provide fixed support for the entire device. The tripod 102 is connected to the telescopic support column 104. The tripod 102 and the telescopic support column 104 are engaged by gears at the intersection of the tripod 102 and the telescopic support column 104, which can be extended and retracted from 0 to 180°, so that the auxiliary equipment can be used in various terrains while also being portable.

[0021] The lateral adjustment module 2 includes a bottom external bolt 201, a locking nut 202, and an upper support frame 203. The bottom external bolt 201 is vertically connected to the upper support frame 203. The locking nut 202 is located on the bottom external bolt 201. After the bottom external bolt 201 is threadedly connected to the top internal thread 106, the locking nut 202 is spirally connected to the bottom external bolt 201. The bottom external bolt 201 can be threadedly connected to the top internal thread 106 of the telescopic support column 104 in the longitudinal support module 1. Furthermore, the auxiliary orientation module 4 can be roughly oriented by adjusting the number of rotations of the thread. The locking nut 202 can lock the lateral adjustment module 2 and the longitudinal support module 1, and can also finely adjust the rotation angle of the auxiliary orientation module 4. The upper support frame 203 is a cube with an internal hollow structure. Its bottom is welded and fixed to the bottom external bolt 201, mainly maintaining the extension and retraction of the square tube of the parallel linkage adjustment module 3.

[0022] The parallel linkage adjustment module 3 includes a first telescopic square tube 301, a second telescopic square tube 302, and a telescopic tube reference scale 303. The second telescopic square tube 302 is disposed inside the first telescopic square tube 301 and can move along the left and right directions of the first telescopic square tube 301. The telescopic tube reference scale 303 is provided on the surface of both the first telescopic square tube 301 and the second telescopic square tube 302. The first telescopic square tube 301 is installed in the inner cavity of the upper support frame 203 of the horizontal adjustment module 2, and the first telescopic square tube 301 and the second telescopic square tube 302 can retract into the upper support frame 203.

[0023] When in use, the first telescopic square tube 301 and the second telescopic square tube 302 of the parallel linkage adjustment module 3 can adjust the distance between the auxiliary equipment and the seismic sensor according to the actual situation on site, making it suitable for various terrains and different distances. At the same time, the scale markings can be used to ensure that the two telescopic square tubes on both sides remain parallel when adjusted at different azimuth angles.

[0024] The auxiliary orientation module 4 consists of a compass 401 with a fixed scale at one end and a north reference plate 402 at the other end. The auxiliary orientation module 4 is welded to both ends of the parallel linkage adjustment module 3. The compass 401 is a custom-made compass containing a circular level bubble 403. Its scale (NS direction) is strictly parallel to the north reference plate 402 at the other end, and simultaneously, strictly perpendicular to the central axis of the square tube of the parallel linkage adjustment module 3. Orientation is performed according to the auxiliary orientation procedure.

[0025] The basic steps of the auxiliary orientation process are as follows: determine the deployment location of the three-dimensional seismic sensors; determine the installation location of the auxiliary orientation device; deploy the tripod of the longitudinal support module 102, adjust the position of the tripod 102 to keep the upper load-bearing frame 203 of the lateral adjustment module 2 roughly level, and fix the meshing gear 103 on the upper part of the tripod 102 to keep the tripod stable; reasonably adjust the length of the telescopic support column 104 to keep the elevation of the upper load-bearing frame 203 basically consistent with the height of the top of the sensor to be deployed, and adjust the fixing spiral structure 105 to brake the telescopic support column 104; adjust the telescopic square tubes 301 and 302 of the parallel linkage adjustment module 3, and observe the reference of the telescopic tubes. The scale 303 ensures that the expansion and contraction of the square tubes on both sides are basically consistent; adjust the number of thread turns of the bottom external bolt 201 of the lateral adjustment module 2 and the top internal thread 106 of the telescopic support 104, observe the north needle of the compass 401 and the N direction of the compass scale, and keep the north needle of the compass and the N direction of the compass scale basically coincident; adjust the bottom foot screw structure 101 of the longitudinal support module 1 to center and level the circular level bubble 403 of the compass 401; fine-tune the locking nut 202, observe the north needle of the compass 401 and the N direction of the compass 401, and keep them completely coincident; deploy the three-dimensional seismic sensor, and keep its north direction mark completely aligned with the N direction of the north reference plate 402.

[0026] Example 1

[0027] A three-dimensional seismic sensor deployment auxiliary orientation device includes a longitudinal support module 1, a lateral adjustment module 2, a parallel linkage adjustment module 3, and an auxiliary orientation module 4. The working principle is as follows: 1) Observe the three-dimensional seismic sensor installation conditions to determine the intended deployment location; 2) Determine the location of the auxiliary orientation device within 1m of the intended sensor location; 3) Deploy the tripod of the longitudinal support module 102, adjust the position of the tripod 102 to maintain the upper support frame 203 of the lateral adjustment module 2 roughly level, and fix the meshing gear 103 on the upper part of the tripod 102 to keep the tripod stable; 4) Adjust the length of the telescopic support column 104 appropriately to maintain the elevation of the upper support frame 203 basically consistent with the height of the top of the intended sensor, and adjust the fixing spiral structure 105 to brake the telescopic support column 104; 5) Adjust the first telescopic square tube 30 of the parallel linkage adjustment module 3 according to actual needs. 1) Adjust the second telescopic square tube 302 and observe the telescopic tube reference scale 303 to ensure that the telescopic amount of the two square tubes is basically consistent; 6) Adjust the number of threads of the bottom tube external bolt 201 of the lateral adjustment module 2 and the top internal thread 106 of the telescopic support 104, observe the north needle of the compass 401 and the N direction of the compass scale, and keep the north needle of the compass and the N direction of the compass scale basically coincident; 7) Adjust the bottom foot screw structure 101 of the longitudinal support module 1 to center and level the circular level bubble 403 of the compass 401; 8) Fine-tune the locking nut 202, observe the north needle of the compass 401 and the N direction of the compass scale, and keep them completely coincident; 9) Deploy the three-dimensional seismic sensor and keep its north direction mark completely aligned with the N direction of the north reference plate 402.

[0028] The longitudinal support module 1 supports adjustment within a range of 50-120cm. The tripod 102 is fixed with bolts at the intersection with the telescopic support column 104, and can support extension and retraction from 0-180°.

[0029] The telescopic square tube of the parallel linkage adjustment module 3 can support extension and retraction of 30-100cm, allowing the distance between the auxiliary equipment and the seismic sensor to be adjusted according to the actual site conditions. Simultaneously, the scale markings ensure that the telescopic square tubes on both sides remain parallel when adjusted at different azimuth angles.

[0030] In the auxiliary orientation module 4, the compass 401 can maintain a distance of 30-100cm from the seismic sensor, and the north reference plate 402 can align its north direction with that of the sensor. This effectively reduces the impact of factors such as the field installation environment, magnetic field environment, manual visual inspection, and close proximity of equipment during instrument deployment. It also simplifies the orientation process and reduces operation time. Except for the compass needle, all other parts of this invention are made of non-magnetic materials such as aluminum alloy to avoid the influence of the device's own magnetic field.

[0031] The above describes an auxiliary orientation device for deploying a three-dimensional seismic sensor, comprising a longitudinal support module 1, a lateral adjustment module 2, a parallel linkage adjustment module 3, and an auxiliary orientation module 4. This invention effectively reduces errors caused by differences in personnel skills or electromagnetic interference from other orientation aids during the deployment and orientation of seismic sensors and other equipment. Furthermore, this device is portable and easy to deploy, which helps improve the observation accuracy of seismic sensors.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An auxiliary orientation device for deploying a three-dimensional seismic sensor, characterized in that, The application relates to a vertical support module (1), a horizontal adjustment module (2), a parallel linkage adjustment module (3) and an auxiliary orientation module (4); wherein the top end of the vertical support module (1) is in threaded connection with the bottom of the horizontal adjustment module (2); the upper part of the horizontal adjustment module (2) is provided with the parallel linkage adjustment module (3), and the auxiliary orientation module (4) is arranged at the two ends of the parallel linkage adjustment module (3); the auxiliary orientation module (4) comprises a compass (401) and a pointing plate (402); one end of the parallel linkage adjustment module (3) is provided with the compass (401) with fixed scale, and the other end is provided with the pointing plate (402) parallel to the north-south scale of the compass (401). The parallel linkage adjustment module (3) comprises a first telescopic square tube (301), a second telescopic square tube (302) and telescopic tube reference scales (303); the second telescopic square tube (302) is arranged in the first telescopic square tube (301) and can move in the left-right direction of the first telescopic square tube (301); the first telescopic square tube (301) and the second telescopic square tube (302) are both provided with the telescopic tube reference scales (303) on the surfaces; the first telescopic square tube (301) is arranged in the inner cavity of the upper bearing frame (203) of the horizontal adjustment module (2), and the first telescopic square tube (301) and the second telescopic square tube (302) can be retracted into the upper bearing frame (203).

2. The device according to claim 1, wherein, The vertical support module (1) comprises bottom foot screw structures (101), tripod supports (102), meshing gears (103), telescopic struts (104), fixed screw structures (105) and top inner threads (106); three tripod supports (102) are connected to the bottom of the telescopic struts (104) through the meshing gears (103); the bottom of each tripod support (102) is fixed with a bottom foot screw structure (101); the fixed screw structures (105) are arranged on the side of the telescopic struts (104); the top inner threads (106) are arranged on the top of the telescopic struts (104) and are used for being in threaded connection with the bottom pipe outer bolts (201) of the horizontal adjustment module (2).

3. The device according to claim 2, wherein, The horizontal adjustment module (2) comprises bottom pipe outer bolts (201), locking nuts (202) and an upper bearing frame (203); the bottom pipe outer bolts (201) are connected with the upper bearing frame (203) vertically; the locking nuts (202) are arranged on the bottom pipe outer bolts (201); after the bottom pipe outer bolts (201) are in threaded connection with the top inner threads (106), the locking nuts (202) are in threaded connection with the bottom pipe outer bolts (201); the locking nuts (202) can lock the horizontal adjustment module (2) and the vertical support module (1); meanwhile, the locking nuts (202) can finely adjust the rotation angle of the auxiliary orientation module (4).

Images