Mobile observation device for seismological observation

Abstract

The invention relates to the field of seismic observation, in particular to a mobile observation device for seismic observation, which comprises a seismometer, the seismometer comprises a seismometer body, a placement base and a protection cover, the protection cover comprises a main body part with an opening at the upper end, an upper crotch part for sealing the upper end of the main body part and a heat insulation part, and the upper crotch part comprises a plurality of blocking pieces. The blocking piece is rotationally connected to the upper end of the body part. In the transportation process and the use process after installation, the protective cover carries out external collision protection on the seismometer body, and the heat insulation part carries out oscillation protection on the seismometer body, so that the probability of damage and failure of the device is reduced. Meanwhile, the heat insulation part can play a certain role in heat insulation and wind prevention, so that the use environment of the seismometer body tends to be ideal, and the measurement error of the seismometer body is reduced. When the seismometer body is debugged, the upper blocking part of the shell is directly opened, the seismometer body does not need to be taken out, the operation is more convenient, and meanwhile, the seismometer body is protected to a certain extent in the debugging process.

Description

Technical Field

[0001] The present application relates to the field of earthquake observation, and in particular to a mobile observation device for earthquake observation. Background Art

[0002] Seismic flow observation is to record the changes of seismic activity by deploying seismic instruments on the surface or underground of the earth. Seismic instruments include seismometers and accelerometers, which can measure the vibration and acceleration of seismic waves. By processing seismic flow observation data and extracting the characteristics of seismic waves, the parameters of underground geological structures and seismic events can be inferred.

[0003] Existing seismic instruments are generally not protected and are shipped in ordinary packaging boxes. When used, they are taken out and placed on site. When installing, first clean the surface of the pier to ensure that the seismometer support feet are in good contact with the installation surface.

[0004] Secondly, use a compass to determine the north-south direction, and use a ruler or other tool to draw an accurate north-south direction line on the pier, and at the same time determine the magnetic north direction. The direction line should pass through the center of the seismometer where it will be placed, and the copper pointer at the bottom of the seismometer should be adjusted to align with the direction line to ensure the accurate direction of the seismometer. If you cannot directly observe the pointer, you can adjust the north arrow on the handle to align with the direction line.

[0005] After that, place the seismometer on the pendulum pier and make sure the level bubble on the top of the seismometer is completely moved to the center of the circle by adjusting the three foot screws of the seismometer. Finally, connect the cycloid to the seismometer and fix the cycloid to complete the installation of the seismometer.

[0006] Currently, comprehensive protection of mobile observation equipment during transportation and after installation has not been considered. Therefore, how to protect seismic instruments and reduce equipment failure caused by damage is an urgent problem to be solved by those skilled in the art. Summary of the invention

[0007] In order to improve the comprehensive protection of the mobile observation device, the present application provides a mobile observation device for earthquake observation.

[0008] The present application provides a mobile observation device for earthquake observation, which adopts the following technical solution: A mobile observation device for earthquake observation comprises a mobile network center and a mobile observation platform, wherein the mobile network center comprises power supply equipment, control equipment and communication equipment, the mobile observation platform comprises a pendulum, a seismometer and a data collector, the seismometer comprises a seismometer body, a placement base and a protective cover, the protective cover is mounted on the placement base, the seismometer body is mounted on the placement base and is located in the protective cover, the protective cover comprises a main body with an opening at the upper end, an upper crotch portion for closing the upper end of the main body, and a heat insulation portion for heat insulation, the upper crotch portion comprises a plurality of blocking sheets, The blocking piece is rotatably connected to the upper end of the main body; when adjacent blocking pieces abut against each other, the blocking piece closes the upper end of the main body and forms a through hole for the circuit of the seismometer body to pass through; when adjacent blocking pieces rotate outward and separate from each other, the main body opening is opened; the heat insulation part includes a fixed part attached to the inner wall of the main body and a movable part attached to the blocking piece, and the heat insulation part is hollow and elastic; when the blocking piece closes the upper end of the main body, the heat insulation part presses against the seismometer body; when the blocking piece opens the upper end of the main body, a gap exists between the heat insulation part and the seismometer body.

[0009] By adopting the above technical solution, during the transportation process and the use process after installation, the protective cover protects the seismometer body from external collisions, and the heat insulation part limits the seismometer body to achieve shock protection, thereby reducing the probability of device damage and failure. At the same time, the heat insulation part can also play a certain role in heat insulation and wind protection, making the use environment of the seismometer body more ideal and reducing its measurement error. At the same time, when debugging the seismometer body, the shell directly opens the upper gear part without taking out the seismometer body, which is more convenient to operate. At the same time, the seismometer body is also protected to a certain extent during the debugging process.

[0010] Optionally, the heat insulating part is made of an airbag, the inner cavities of the fixed part and the movable part are connected and the outer walls are fixed to each other, and the heat insulating part is provided with a control valve for inflating and deflating the heat insulating part.

[0011] By adopting the above technical solution, the heat insulation part can better fit the seismograph body, thereby improving the heat preservation and buffering capacity.

[0012] Optionally, the movable part closes the through hole and presses against the circuit of the seismometer body when it is inflated; when the blocking piece is opened, the upper end of the seismometer body is exposed outside the main body.

[0013] By adopting the above technical solution, sufficient space is provided to facilitate the user to perform debugging operations on the seismograph body.

[0014] Optionally, the lower end of the protective cover is open, and the placement base is slidably connected to the lower end of the protective cover and is used to close the lower end of the protective cover; when the seismometer is placed on the pendulum pier, the placement base is slid to open the lower end opening of the protective cover, and the seismometer body falls on the pendulum pier and is horizontally arranged.

[0015] By adopting the above technical solution, the seismometer body is still protected during the installation process. At the same time, it can also ensure that the seismometer body fits the pier to detect seismic waves.

[0016] Optionally, the placement base includes two symmetrically arranged support plates, which are slidably connected to the protective cover in the horizontal direction and fixed to the protective cover in the vertical direction, and when the two support plates abut against each other, the support plates close the lower end of the protective cover; the upward side of the support plate includes a support surface for supporting the seismometer body and a guide surface for guiding the seismometer body to slide downward, and the support surface is supported by one end of the guide surface away from the other support plate; when the two support plates slide outward, the seismometer body falls on the guide surface and moves downward along the guide surface.

[0017] Optionally, the protective cover is provided with a driving mechanism for driving the two support plates to slide synchronously outward or inward.

[0018] By adopting the above technical solution, the seismometer body is kept in a horizontal falling and non-inclined state as much as possible during the falling process, so that the seismometer body shell falls on the swing pier more stably.

[0019] Optionally, the driving mechanism includes a mounting block positioned and slidably connected to the main body along the vertical direction, and a transmission rod rotatably connected to the mounting block. Two transmission rods are provided and one transmission rod corresponds to one support plate. One end of the transmission rod is rotatably connected to the mounting block and the other end is rotatably connected to the support plate.

[0020] Optionally, when the control valve is closed, the drive mechanism is locked.

[0021] By adopting the above technical solution, it is possible to prevent the seismometer body from falling due to the driving mechanism opening the support plate during transportation.

[0022] Optionally, the swing pier includes a mounting portion, a horizontal portion universally mounted above the mounting portion, and a leveling assembly for adjusting the horizontal portion to be horizontal, wherein a pointing line and a level ruler are provided on the horizontal portion.

[0023] By adopting the above technical solution, the level of the horizontal part can be directly adjusted through the leveling component, and the placement direction of the protective cover on the pier can be determined by the pointing line, so there is no need to open the protective cover to adjust the position and levelness of the seismometer body, and the operation is more convenient.

[0024] Optionally, the leveling assembly includes at least three leveling parts evenly distributed on the mounting part, the leveling parts include an adjustment block radially slidably connected to the mounting part along the horizontal part and an adjustment force member for driving the adjustment block to move relative to the mounting part, the adjustment block is provided with an adjustment inclined surface, and the adjustment inclined surface supports the lower end surface of the horizontal part.

[0025] In summary, the present application includes at least one of the following beneficial technical effects: 1 During transportation and use after installation, the seismometer body should be protected from external collision and shock to reduce the probability of device damage and failure; 2. It plays a certain role in heat insulation and wind protection, making the use environment of the seismometer body more ideal and reducing its measurement error; 3. Make installation and debugging operations more convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural diagram of embodiment 1.

[0027] Figure 2 It is a structural schematic diagram of the seismometer and the swing pier in the first embodiment.

[0028] Figure 3 It is a cross-sectional view of the seismometer body in the first embodiment.

[0029] Figure 4 It is a structural schematic diagram of the seismometer and the swing pier in the second embodiment.

[0030] Figure 5 It is a cross-sectional view of the seismometer body in the second embodiment.

[0031] Figure 6 It is a cross-sectional view of the seismometer and the pendulum pier in the second embodiment.

[0032] Figure 7 It is a structural schematic diagram of the seismometer body in the second embodiment.

[0033] Figure 8 It is a cross-sectional view of the seismometer body in the third embodiment.

[0034] Description of reference numerals: 1. Mobile network center; 2. Mobile observation platform; 3. Swing pier; 31. Horizontal part; 311. Limiting groove; 312. Annular inclined surface; 313. Wire groove; 32. Mounting part; 321. Groove; 33. Connecting ball head; 34. Leveling member; 341. Adjusting block; 3411. Adjusting inclined surface; 342. Adjusting force member; 4. Seismometer body; 5. Placing base; 51. Support plate; 51 1. Guide surface; 52. Drive mechanism; 521. Mounting block; 522. Transmission rod; 523. Adjusting screw; 524. Limiting rod; 6. Protective cover; 61. Main body; 611. Adjusting groove; 612. Fixing screw hole; 62. Upper gear part; 621. Blocking sheet; 63. Heat insulation part; 631. Fixed part; 632. Movable part; 633. Control valve; 7. Limiting block; 8. Locking handle; 81. Locking rod. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1-8 This application is described in further detail.

[0036] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0037] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0038] The embodiment of the present application discloses a mobile observation device for earthquake observation.

[0039] Embodiment 1: Please refer to Figure 1 and Figure 2 In one embodiment of the present application, a mobile observation device for earthquake observation includes a mobile network center 1 and a mobile observation station 2. The mobile network center 1 includes power supply equipment, control equipment and communication equipment, and the mobile observation station 2 includes a pendulum 3, a seismometer and a data collector.

[0040] A plurality of mobile observation stations can form an earthquake observation station in a small area. During installation, the pier 3 is pre-buried in a soft soil site or fixed on a rock plate site by cement or other materials, and the seismometer is transported to the pier 3 and then installed on the pier 3.

[0041] Please refer to Figure 2 and Figure 3 In order to protect the seismometer during transportation and after installation, the seismometer includes a seismometer body 4, a placement base 5 and a protective cover 6. The protective cover 6 is installed on the placement base 5. The seismometer body 4 is installed on the placement base 5 and is located in the protective cover 6. The protective cover 6 includes a main body 61 with an open upper end, an upper stop 62 for closing the upper end of the main body 61, and a heat insulation part 63 for heat insulation. In this embodiment, the main body 61 is a hollow rectangular parallelepiped.

[0042] The upper crotch portion includes a plurality of blocking sheets 621. In this embodiment, there are four blocking sheets 621 and they are distributed corresponding to the four side walls of the main body 61. The blocking sheets 621 are rotatably connected to the upper end of the main body 61. When adjacent blocking sheets 621 abut against each other, the blocking sheets 621 form an umbrella-top shape to close the upper end of the main body 61 and form a through hole for the line of the seismometer body 4 to pass through; when adjacent blocking sheets 621 rotate outward and separate from each other, the main body 61 is opened. When the blocking sheets 621 are opened, the upper end of the seismometer body 4 is exposed outside the main body 61.

[0043] The heat insulating part 63 includes a fixed part 631 attached to the inner wall of the main body 61 and a movable part 632 attached to the blocking sheet 621. The heat insulating part 63 is hollow and elastic. In this embodiment, the heat insulating part 63 is made of an airbag. The inner cavities of the fixed part 631 and the movable part 632 are connected and the outer walls are fixed to each other. The heat insulating part 63 is provided with a control valve 633 for inflating and deflating the heat insulating part 63. The control valve 633 can be a butterfly valve, an extrusion valve, an airbag valve, etc. In this embodiment, the control valve 633 is a butterfly valve. When the blocking sheet 621 closes the upper end of the main body 61, the heat insulating part 63 is inflated and expanded to press against the seismometer body 4, and the through hole is closed and pressed against the line of the seismometer body 4; when the blocking sheet 621 opens the upper end of the main body 61, the control valve 633 is opened to deflate the heat insulating part 63, so that there is a gap between the heat insulating part 63 and the seismometer body 4.

[0044] During transportation, the heat insulation part 63 is inflated, and the seismometer body 4 is fixed and insulated by the heat insulation part 63, reducing the damage caused by vibration and ambient temperature to the seismometer body 4 during transportation. The protective cover 6 completely covers the seismometer body 4, which protects the seismometer body 4 from physical impact and rain during transportation, and also reduces the damage caused to the seismometer body 4. If the seismometer body 4 needs to be debugged, the control valve 633 can be opened to deflate the heat insulation part 63, and then the blocking sheet 621 can be opened, and the upper end of the seismometer body 4 is exposed outside the main body 61, and the seismometer body 4 can be debugged at this time.

[0045] In order to prevent the upper end of the protective cover 6 from being opened due to accidental touch, a locking handle 8 is provided on the protective cover 6. Both ends of the locking handle 8 are rotatably connected to locking rods 81, and the locking rod 81 is threadedly connected to the upper end of one of the blocking sheets 621. When the blocking sheet 621 needs to be rotated, the locking rod needs to be twisted to separate the locking handle 8 from the blocking sheet 621, thereby achieving the unlocking effect. In other embodiments, at least three locking rods 81 may be provided on the locking handle 8, and one locking rod 81 corresponds to one blocking sheet 621. Multiple locking handles 8 may also be provided, and one locking handle corresponds to two blocking sheets 621.

[0046] Embodiment 2: Please refer to Figure 4 , Figure 5 and Figure 6 The difference between the second embodiment and the first embodiment is that, in order to complete the installation of the seismometer without taking the seismometer body 4 out of the protective cover 6, the lower end of the protective cover 6 is set to be open, and the placement base 5 is slidably connected to the lower end of the protective cover 6 and is used to close the lower end of the protective cover 6. The swing pier 3 includes a mounting portion 32, a horizontal portion 31 mounted above the mounting portion 32, and a leveling assembly for adjusting the horizontal portion 31 to a horizontal level. A groove 321 for accommodating the horizontal portion 31 is provided on the mounting portion 32, a connecting ball head 33 is provided on the lower end surface of the horizontal portion 31, and a connecting ball groove is provided on the bottom wall of the groove 321. The connecting ball head 33 is rotatably connected in the connecting ball groove, thereby realizing a universal connection between the horizontal portion 31 and the mounting portion 32. A limiting groove 311 for accommodating the seismometer body 4 is provided on the horizontal portion 31. A pointing line and a level ruler are provided on the horizontal portion 31. A marking line corresponding to the pointing line is provided on the protective cover 6.

[0047] Before installing the seismometer, first adjust the horizontal part 31 relative to the mounting part 32 through the leveling assembly until the horizontal part 31 is adjusted to a horizontal level. The specific requirement is that the bubble on the level ruler is located in the middle of the level ruler. Then place the seismometer on the horizontal part 31 so that the marking line is aligned with the pointing line, so as to ensure that the seismometer body 4 is placed horizontally and in an accurate direction; open the control valve 633 to deflate the air, so that the seismometer body 4 loses the restriction of the heat insulation part 63, and finally slide the base 5 to open the lower end opening of the protective cover 6, and the seismometer body 4 falls into the limiting groove 311, thereby completing the installation of the seismometer body 4. In the process, it is not necessary to take the seismometer body 4 out of the protective cover 6, and the seismometer body 4 is still protected during the installation process. At the same time, it is not necessary to open the upper gear part 62, which is convenient to operate. If necessary, after the seismometer body 4 falls into the limiting groove 311, the heat insulation part 63 can still be inflated so that it limits the seismometer body 4 again, so that the seismometer body 4 is more stably installed in the protective cover 6, and the seismometer body 4 can also be protected from heat, rain, and shock.

[0048] Please refer to Figure 5 , Figure 6 and Figure 7 The leveling assembly includes at least three leveling members 34 evenly distributed on the mounting portion 32. The leveling member 34 includes a leveling block slidably connected to the mounting portion 32 along the radial direction of the horizontal portion 31 and an adjusting force member 342 for driving the adjusting block 341 to move relative to the mounting portion 32. An adjusting inclined surface 3411 is provided on the adjusting block 341, and the adjusting inclined surface 3411 supports the lower end surface of the horizontal portion 31. The adjusting force member 342 is arranged radially along the horizontal portion 31 and is threadedly connected to the mounting portion 32. One end of the adjusting force member 342 is rotatably connected to the adjusting block 341 and is fixedly connected to the adjusting block 341 along its axial direction. The adjusting block 341 is located in the groove 321. When adjusting the horizontality of the horizontal portion 31, the adjusting force member 342 can be rotated to drive the adjusting block 341 to approach the horizontal portion 31 or away from the horizontal portion 31, thereby adjusting the height of the horizontal portion 31 corresponding to this point. After adjusting multiple adjusting blocks 341, the horizontal portion 31 can be adjusted to a horizontal state.

[0049] In order to better support the horizontal portion 31 , an annular slope 312 is disposed at the lower end of the horizontal portion 31 . The angle of the annular slope 312 is the same as that of the adjusting slope 3411 , and the adjusting slope 3411 abuts against and supports the annular slope 312 .

[0050] In order to more conveniently adjust the seismometer to an accurate direction, a wire groove 313 is provided at the position of the horizontal portion 31 corresponding to the pointing line, and a limit block 7 is provided on the protective cover 6, and the limit block 7 corresponds to the position of the marking line. When the seismometer is placed on the horizontal portion 31, the limit block 7 slides and fits into the wire groove 313, and the direction of the seismometer body 4 can be ensured to be accurate. In order to reduce the collision of the limit block 7 when not installed, the limit block 7 is rotatably connected to the protective cover 6. During conventional transportation, the limit block 7 is rotated so that the limit block 7 no longer protrudes from the lower end of the protective cover 6, so that the seismometer can be stably placed on a horizontal surface such as a freight truck or other means of transportation.

[0051] In order to make the seismometer body 4 stably fall into the limiting groove 311, specifically, the placement base 5 includes two symmetrically arranged support plates 51, and the support plates 51 are slidably connected to the protective cover 6 in the horizontal direction and fixed to the protective cover 6 in the vertical direction. Specifically, a dovetail block is provided on the support plate 51, and a dovetail groove is provided on the protective cover 6. Through the cooperation of the dovetail groove and the dovetail groove, the support plate 51 is slidably connected to the protective cover 6 in the horizontal direction. When the two support plates 51 abut against each other, the support plate 51 closes the lower end of the protective cover 6. The upper side of the support plate 51 includes a support surface for supporting the seismometer body 4 and a guide surface 511 for guiding the seismometer body 4 to slide downward, and the support surface is supported by the end of the guide surface 511 away from the other support plate 51; when the two support plates 51 slide outward, the seismometer body 4 falls on the guide surface and moves downward along the guide surface.

[0052] The protective cover 6 is provided with a driving mechanism 52 for driving the two support plates 51 to slide outward or inward synchronously. The driving mechanism 52 includes a mounting block 521 that is vertically positioned and slidably connected to the main body 61, and a transmission rod 522 that is rotatably connected to the mounting block 521. Two transmission rods 522 are provided, and one transmission rod 522 corresponds to one support plate 51. One end of the transmission rod 522 is rotatably connected to the mounting block 521, and the other end is rotatably connected to the support plate 51.

[0053] Specifically, an adjustment groove 611 is provided on the main body 61 in the vertical direction, and fixing screw holes 612 are provided at both ends of the bottom wall of the adjustment groove 611. The mounting block 521 is slidably connected to the adjustment groove 611, and an adjustment screw 523 is threadedly connected to the mounting block 521. When the adjustment screw 523 is threadedly connected to the fixing screw hole 612, the mounting block 521 is fixed relative to the main body 61, and when the adjustment screw 523 is not embedded in the fixing screw hole 612, the mounting block 521 is slidably connected to the adjustment groove 611. During operation, the adjustment screw 523 is screwed out of the fixing screw hole 612, and then the mounting block 521 is slid. At this time, the transmission rod 522 rotates, thereby driving the support plate 51 to slide relative to the protective cover 6, thereby realizing the opening of the lower end of the protective cover 6.

[0054] In order to prevent the lower end of the protective cover 6 from being opened due to accidental touch, the driving mechanism 52 is locked when the control valve 633 is closed. Specifically, a limit rod 524 is provided on the mounting block 521. When the control valve 633 is in a closed state, the valve stem of the control valve 633 is located below the limit rod 524, so that the mounting block 521 cannot slide down, and the support plate 51 cannot be opened.

[0055] Embodiment three: Please refer to Figure 8 The difference between the third embodiment and the first embodiment is that a threading hole is provided on one of the blocking sheets 621 for the wires of the seismometer body 4 to pass through. When the heat insulating portion 63 is inflated, the heat insulating portion 63 fills the through hole formed by the blocking sheet 621, thereby locking the blocking sheet 621, so that when the heat insulating portion 63 is inflated, the blocking sheet 621 cannot be turned downward, thereby reducing the possibility of damage to the seismometer body 4 due to the blocking sheet 621 accidentally turning downward during transportation.

[0056] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A mobile observation device for earthquake observation, comprising a mobile network center (1) and a mobile observation station (2), wherein the mobile network center (1) comprises a power supply device, a control device and a communication device, and the mobile observation station (2) comprises a pendulum (3), a seismometer and a data collector, characterized in that: The seismometer comprises a seismometer body (4), a placement base (5) and a protective cover (6), wherein the protective cover (6) is mounted on the placement base (5), the seismometer body (4) is mounted on the placement base (5) and is located in the protective cover (6), the protective cover (6) comprises a main body (61) with an opening at the upper end, an upper crotch portion (62) for closing the upper end of the main body (61), and a heat insulation portion (63) for heat insulation, the upper crotch portion comprises a plurality of blocking sheets (621), and the blocking sheets (621) are rotatably connected to the upper end of the main body (61); when adjacent blocking sheets (621) abut against each other, the blocking sheets (621) close the upper end of the main body (61) and the blocking sheets (621) close the upper end of the main body (61). A through hole is formed for the circuit of the seismometer body (4) to pass through; when adjacent blocking sheets (621) rotate outward and separate from each other, the main body (61) is opened; the heat insulating portion (63) comprises a fixed portion (631) attached to the inner wall of the main body (61) and a movable portion (632) attached to the blocking sheet (621); the heat insulating portion (63) is hollow and elastic; when the blocking sheet (621) closes the upper end of the main body (61), the heat insulating portion (63) is pressed against the seismometer body (4); when the blocking sheet (621) opens the upper end of the main body (61), a gap exists between the heat insulating portion (63) and the seismometer body (4).

2. A mobile observation device for earthquake observation according to claim 1, characterized in that: The heat insulating part (63) is made of an air bag, the inner cavities of the fixed part (631) and the movable part (632) are connected and the outer walls are fixed to each other, and the heat insulating part (63) is provided with a control valve (633) for inflating and deflating the heat insulating part (63).

3. A mobile observation device for earthquake observation according to claim 2, characterized in that: When the movable part (632) is inflated, it closes the through hole and presses against the line of the seismometer body (4); when the blocking piece (621) is opened, the upper end of the seismometer body (4) is exposed outside the main body (61).

4. A mobile observation device for earthquake observation according to claim 2, characterized in that: The lower end of the protective cover (6) is open, and the placement base (5) is slidably connected to the lower end of the protective cover (6) and is used to close the lower end of the protective cover (6); when the seismometer is placed on the pendulum pier (3), the placement base (5) is slid to open the lower end opening of the protective cover (6), and the seismometer body (4) falls on the pendulum pier (3) and is arranged horizontally.

5. A mobile observation device for earthquake observation according to claim 4, characterized in that: The placement base (5) comprises two symmetrically arranged support plates (51), the support plates (51) are slidably connected to the protective cover (6) in the horizontal direction and are fixed to the protective cover (6) in the vertical direction, and when the two support plates (51) abut against each other, the support plates (51) close the lower end of the protective cover (6); the upper side of the support plate (51) comprises a support surface for supporting the seismometer body (4) and a guide surface (511) for guiding the seismometer body (4) to slide downward, and the support surface is supported by one end of the guide surface (511) away from the other support plate (51); when the two support plates (51) slide outward, the seismometer body (4) falls on the guide surface and moves downward along the guide surface.

6. A mobile observation device for earthquake observation according to claim 5, characterized in that: The protective cover (6) is provided with a driving mechanism (52) for driving the two support plates (51) to slide synchronously outward or inward.

7. A mobile observation device for earthquake observation according to claim 6, characterized in that: The driving mechanism (52) comprises a mounting block (521) which is slidably connected to the main body (61) in a vertical direction, and a transmission rod (522) which is rotatably connected to the mounting block (521); two transmission rods (522) are provided, and one transmission rod (522) corresponds to one support plate (51); one end of the transmission rod (522) is rotatably connected to the mounting block (521) and the other end is rotatably connected to the support plate (51).

8. A mobile observation device for earthquake observation according to claim 7, characterized in that: When the control valve (633) is closed, the drive mechanism (52) is locked.

9. A mobile observation device for earthquake observation according to claim 2, characterized in that: The swing pier (3) comprises a mounting portion (32), a horizontal portion (31) universally mounted above the mounting portion (32), and a leveling assembly for adjusting the horizontal portion (31) to a horizontal level, wherein a pointing line and a level ruler are provided on the horizontal portion (31).

10. A mobile observation device for earthquake observation according to claim 9, characterized in that: The leveling assembly comprises at least three leveling members (34) evenly distributed on the mounting portion (32), the leveling member (34) comprising an adjustment block (341) radially slidably connected to the mounting portion (32) along the horizontal portion (31) and an adjustment force member (342) for driving the adjustment block (341) to move relative to the mounting portion (32), the adjustment block (341) being provided with an adjustment inclined surface (3411), the adjustment inclined surface (3411) supporting the lower end surface of the horizontal portion (31).

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