Seismometer protective cover

Abstract

The utility model provides a seismometer protective cover, which belongs to the technical field of earthquake monitoring facilities and comprises a cover body and a cover body, the cover body is used for enclosing a seismometer and is provided with an upper opening and a lower opening, the cover body is used for sealing the cover body, the bottom end of the cover body is fixedly connected with a seismometer foundation, and the side wall of the cover body is provided with a wire passing hole. The top end of the cover body is detachably connected with the cover body through a locking mechanism, and spaces are reserved between the cover body and the seismometer and between the cover body and the seismometer. According to the seismometer protective cover provided by the utility model, the seismometer in the protective cover can be conveniently overhauled while the seismometer is protected.

Description

Technical Field

[0001] The utility model relates to the technical field of seismic monitoring facilities, in particular to a protective cover for a seismometer. Background Art

[0002] A seismometer is a key device in seismic monitoring and research, used to measure and record the activities of seismic waves. At present, in the long-term seismic monitoring of most fixed seismic stations and the short-term seismic monitoring of temporary (mobile) seismic stations, different types of seismometers play an important role. Since seismometers are precision instruments and are sensitive to the environmental background, especially in field monitoring, seismometers are very vulnerable to the influence of the surrounding external environment, which interferes with the monitoring accuracy.

[0003] Both CN211905716U and CN112327351A disclose adding a protective cover outside the seismometer to protect the seismometer and reduce the influence of the surrounding environment, but the protective cover is an integral structure. To maintain the good working state of the seismometer, regular inspection and maintenance are required. For an integral protective cover, when inspecting the seismometer, the protective cover needs to be completely removed before operation, and after the inspection, the protective cover needs to be reset and connected to the foundation again, which is time-consuming and laborious. Summary of the Utility Model

[0004] In view of the above problems, in order to facilitate the inspection of the seismometer, the utility model provides a protective cover for a seismometer, which divides the protective cover into a detachable cover body and a cover. The cover can be closed and opened. When inspection is needed, only the cover needs to be quickly removed to achieve the effect of an upper opening, without removing the entire protective cover. After the inspection, the cover is fixedly installed on the cover body, with high inspection efficiency and saving manpower and time.

[0005] A protective cover for a seismometer provided by the utility model includes a cover body that encloses the seismometer and has upper and lower openings, and a cover that seals the cover body. The bottom end of the cover body is fixedly connected to the seismometer foundation. A wire passing hole is provided on the side wall of the cover body. The top end of the cover body and the cover are detachably connected by a locking mechanism. Spaces are left between the cover body and the cover and the seismometer.

[0006] As a further improvement of the utility model, the locking mechanism includes a plurality of groups of upper and lower opposite first ear plates and second ear plates arranged circumferentially along the cover body. The first ear plates are fixed on the cover, and the second ear plates are fixed on the cover body. A column is fixedly connected to the bottom surface of the second ear plate away from the first ear plate. A first through hole is provided in the first ear plate, a second through hole is provided in the second ear plate, and a threaded hole coaxial with and communicating with the first through hole and the second through hole is provided in the column. The first ear plate and the second ear plate are connected by a fastening bolt that sequentially passes through the first through hole and the second through hole and is threadedly connected to the column.

[0007] As a further improvement of the present utility model, the locking mechanism includes a plurality of buckles fixed on the outer side surface of the upper part of the cover body and arranged along the circumferential direction of the cover body, and a buckle ring fixed on the outer surface of the cover body and cooperating with the buckles.

[0008] As a further improvement of the present utility model, the locking mechanism includes a plurality of upper ear plates and lower ear plates arranged up and down opposite to each other along the circumferential direction of the cover body, and a clamp for clamping the upper ear plates and the lower ear plates.

[0009] As a further improvement of the present utility model, the protective cover is cylindrical.

[0010] As a further improvement of the present utility model, a limiting ring extending downward into the cover body is fixed on the bottom surface of the cover body, and the outer side surface of the limiting ring is in close contact with the inner side surface of the cover body.

[0011] As a further improvement of the present utility model, a heating component for maintaining the internal temperature stable is arranged in the cover body.

[0012] As a further improvement of the present utility model, a transparent observation window is arranged on the side wall of the cover body.

[0013] As a further improvement of the present utility model, the wire passing hole is located at the lower part of the cover body.

[0014] As a further improvement of the present utility model, the bottom section of the cover body is trapezoidal.

[0015] A seismometer protective cover provided by the present utility model improves the existing integrated protective cover. The protective cover is designed as a separable cover body and a cover, which are detachable. The locking mechanism is used to quickly install the cover onto the cover body to complete the combination of the cover body and the cover body; when maintenance is required, the locking mechanism is opened, and the cover can be removed from the cover body, making the upper part of the protective cover in an open state, which is convenient for maintaining the seismometer located inside the protective cover. Description of the Drawings

[0016] Figure 1 is a cross-sectional view of the seismometer protective cover of the present utility model.

[0017] Figure 2 is Figure 1 a partial enlarged view of part A in

[0018] Figure 3 is a schematic diagram of the first locking mechanism of the seismometer protective cover according to Embodiment 1 of the present utility model.

[0019] Figure 4 is Figure 3 a partial enlarged view of part B in

[0020] Figure 5 It is a top view of the seismometer protective cover in the first embodiment of the present utility model.

[0021] Figure 6 It is a schematic diagram of the second locking mechanism of the seismometer protective cover in the second embodiment of the present utility model.

[0022] Figure 7 It is a top view of a cover body of the seismometer protective cover in the second embodiment of the present utility model.

[0023] Figure 8 It is a schematic diagram of the third locking mechanism of the seismometer protective cover in the third embodiment of the present utility model.

[0024] Figure 9 It is a cross-sectional view of the third locking mechanism of the seismometer protective cover in the third embodiment of the present utility model in another direction.

[0025] Explanation of reference numerals: 1. Cover body; 11. Wire passing hole; 2. Cover body; 21. Limiting ring; 211. Rounded corner part; 22. Control handle; 3. Seismometer; 4. Heating component; 41. Temperature sensor; 42. Heater; 5. First locking mechanism; 51. First ear plate; 511. First through hole; 52. Second ear plate; 521. Second through hole; 53. Column; 531. Threaded hole; 54. Tightening bolt; 6. Second locking mechanism; 61. Buckle; 62. Buckle loop; 7. Third locking mechanism; 71. Upper ear plate; 711. Upper limiting groove; 72. Lower ear plate; 721. Lower limiting groove; 73. Clamp; 731. First clip; 732. Second clip; 733. Connecting plate. Detailed implementation manners

[0026] The following combines specific embodiments and attached Figures 1-9 to make a detailed description of the utility model, so that those skilled in the art can more fully understand the purpose, features and effects of the present utility model.

[0027] Unless otherwise defined, all technical and scientific terms used in the present utility model have the same meaning as commonly understood by those skilled in the art to which the present utility model belongs. When the definition of a term in the present utility model conflicts with the meaning commonly understood by those skilled in the art to which the present utility model belongs, the definition described in the present utility model shall prevail.

[0028] The present utility model provides a seismometer protective cover, which improves the protective cover in the prior art, thereby facilitating the maintenance of the seismometer inside the protective cover.

[0029] A seismometer protective cover, referring to Figure 1 , Figure 2, including a cover body 1 and a cover 2 that matches and is detachable from the top of the cover body 1. The cover body 1 and the cover 2 are detachably connected by a locking mechanism, and a seismometer 3 is placed inside the cover body 1.

[0030] The cover body 1 has an upper and lower open structure. The height of the cover body 1 is greater than the height of the seismometer 3, and there is a space between the inner wall of the cover body 1 and the seismometer 3. There is a space between the bottom surface of the cover 2 and the seismometer 3.

[0031] The bottom end of the cover body 1 is bonded and fixed to the foundation on which the seismometer 3 is placed to achieve bottom sealing. Specifically, structural adhesive can be used for bonding. A wire passing hole 11 penetrating the side wall is provided in the lower part of the cover body 1. The cable is led out of the protective cover through the wire passing hole 11, and the gap between the hole wall of the wire passing hole 11 and the cable is sealed with sealant, while playing a certain role in fixing the cable.

[0032] The length of the transverse section of the cover body 1 is the same as the length of the transverse section of the cover 2. When the cover 2 is installed on the cover body 1, the side surface of the cover 2 is flush with the outer side surface of the cover body 1, and the bottom surface of the cover 2 is in close contact with the top surface of the cover body 1.

[0033] A limiting ring 21 extending downward is fixed to the bottom surface of the cover 2. The limiting ring 21 extends into the cover body 1, and the outer side surface of the limiting ring 21 is in close contact with the inner side surface of the cover body 1. The limiting ring 21 can limit the cover 2 to prevent the cover 2 from moving horizontally on the top of the cover body 1, thus ensuring that the side surface of the cover 2 is flush with the outer side surface of the cover body 1; the setting of the limiting ring 21 realizes the clamping connection between the cover 2 and the cover body 1, and initially fixes the cover 2 on the cover body 1.

[0034] The outer bottom of the limiting ring 21 is a rounded corner part 211, and the rounded corner part 211 has a guiding function to facilitate the insertion of the limiting ring 21 into the cover body 1.

[0035] Since the limiting ring 21 is in close contact with the cover body 1, the cover 2 seals the top of the cover body 1. To ensure the sealing effect of the cover 2 on the cover body 1, in other examples, the surface layer of the limiting ring 21 can be a rubber layer.

[0036] To facilitate the installation and removal of the cover 2, a control handle 22 is fixed to the top surface of the cover 2.

[0037] Furthermore, the shape of the protective cover can be cylindrical or polygonal columnar. Preferably, the shape of the protective cover is cylindrical, which can reduce the force of the wind on the cover body 1.

[0038] The cover body 1 and the cover 2 are internally provided with a thermal insulation layer, so as to separate the internal and external environments, help maintain the internal temperature and reduce the influence of the external air temperature on the internal temperature. To further ensure the stability of the internal temperature and prevent the seismometer 3 from working at low temperature for a long time, a heating component 4 is provided on the inner wall of the cover body 1.

[0039] Specifically, the heating component 4 includes a temperature sensor 41, a heater 42, and a single-chip microcomputer (not shown in the figure) fixed on the inner wall of the cover 1. The heater 42 is an electric heater. Both the temperature sensor 41 and the heater 42 are communicatively connected to the single-chip microcomputer. The temperature sensor 41 collects temperature data and transmits the temperature signal to the single-chip microcomputer, and the single-chip microcomputer is used to control the start and stop of the heater 42 according to the received signal. The single-chip microcomputer pre-sets a low-temperature threshold and a shutdown threshold, where the shutdown threshold is greater than the low-temperature threshold. After the heating component 4 is powered on, when the temperature sensor 41 monitors that the temperature inside the protective cover is less than the low-temperature threshold, the single-chip microcomputer controls the heater 42 to start heating; when the temperature sensor 41 detects that the temperature inside the protective cover reaches the shutdown threshold, the single-chip microcomputer controls the heater 42 to stop heating to avoid the temperature inside the protective cover from being too high. The temperature difference between the shutdown threshold and the low-temperature threshold is within the range of 2 - 5 °C. Due to the good heat preservation and heat insulation effect of the protective cover, the temperature inside the protective cover can be maintained above the low-temperature threshold for a long time after heating.

[0040] There is a space left between the heating component 4 and the seismometer 3 to prevent the components in the heating component 4 from disturbing the seismometer 3 during operation.

[0041] Further, to increase the contact area between the cover 1 and the foundation and enhance the stability of the cover 1, in one example, the cross-section of the bottom of the cover 1 is trapezoidal, so that the cover 1 can be fixed more reliably during installation.

[0042] In one example, in order to facilitate observing whether there is a problem with the seismometer 3 inside the cover 1, a transparent observation window is also provided on the side wall of the cover 1, and the staff can observe the situation inside the protective cover from the outside through the observation window. In another example, the observation window can also be provided on the cover body 2.

[0043] The locking mechanism will be described in detail through specific embodiments below.

[0044] Embodiment 1

[0045] As a specific embodiment of the present invention, this embodiment provides a seismometer protective cover. Referring to Figure 3 、 Figure 4 , it includes a cover 1 and a cover body 2 that is matched with and detachable from the top of the cover 1. The cover 1 and the cover body 2 are connected by a first locking mechanism 5, and a seismometer 3 is placed inside the cover 1.

[0046] Specifically, the first locking mechanism 5 includes a first ear plate 51 fixed to the side surface of the cover body 2 and a second ear plate 52 fixed to the upper side surface of the housing 1. The bottom surface of the first ear plate 51 is flush with the bottom surface of the cover body 2, and the top surface of the second ear plate 52 is flush with the top surface of the housing 1. The first ear plate 51 and the second ear plate 52 are vertically opposite to each other. The number of the first ear plates 51 and the second ear plates 52 is equal. A vertical column 53 extending downward is fixed to the bottom surface of the second ear plate 52.

[0047] A first through hole 511 vertically penetrating the first ear plate 51 is formed in the first ear plate 51, a second through hole 521 vertically penetrating the second ear plate 52 is formed in the second ear plate 52, and a vertical threaded hole 531 is formed in the top surface of the column 53, and the bottom end of the threaded hole 531 is closed. The first through hole 511, the second through hole 521 and the threaded hole 531 are communicated and coaxial. A fastening bolt 54 is inserted into the first through hole 511 and the second through hole 521. The lower part of the fastening bolt 54 is threadedly connected to the column 53. The head of the fastening bolt 54 is hexagonal.

[0048] The number of the first locking mechanisms 5 is at least two. In Figure 3 one example, there are two first locking mechanisms 5, which are symmetrically arranged; in Figure 4 another example in

[0049] When in use, after inserting the limit ring 21 into the housing 1, adjust the cover body 2 to vertically align the first through hole 511 and the second through hole 521, and pass the fastening bolt 54 through the first through hole 511 and the second through hole 521 from above the first ear plate 51. When the bottom end of the fastening bolt 54 enters the threaded hole 531, turn the head of the fastening bolt 54 to realize the threaded connection between the fastening bolt 54 and the column 53. After the fastening bolt 54 is tightened, the first ear plate 51 and the second ear plate 52 are closely attached, so that the cover body 2 is reliably installed on the housing 1, and at the same time, the seal at the connection between the cover body 2 and the housing 1 is ensured.

[0050] When maintenance is required, turn the fastening bolt 54 in the reverse direction to screw the bottom end of the fastening bolt 54 out of the threaded hole 531, so that the first ear plate 51 and the second ear plate 52 can be separated, realizing the unlocking between the cover body 2 and the housing 1. Finally, pull up the control handle 22 to remove the cover body 2 from the housing 1.

[0051] In this embodiment, by fixing the column 53 with the threaded hole 531 to the second ear plate 52, the rapid installation of the fastening bolt 54 can be realized.

[0052] Embodiment 2

[0053] As another specific embodiment of the present invention, this embodiment provides a seismometer protective cover, referring to Figure 6 andFigure 7 , including a cover body 1 and a cover 2 that matches and is detachable from the top of the cover body 1. The cover body 1 and the cover 2 are connected by a second locking mechanism 6, and a seismometer 3 is placed inside the cover body 1.

[0054] Specifically, the second locking mechanism 6 includes a buckle 61 fixed on the upper side wall of the cover body 1 and a buckle loop 62 fixed on the top edge of the cover 2 and extending upward. The buckle 61 and the buckle loop 62 are matched to achieve quick locking and unlocking of the cover 2 and the cover body 1. The number of buckles 61 can be two, three, or four.

[0055] In this embodiment, the buckle loops 62 are arranged along the edge of the cover 2, so that the buckle locking function can be quickly realized without adjusting the cover 2 during use.

[0056] In this embodiment, the buckle 61 is a technical means in the prior art, and its structure is not improved.

[0057] In another example, the buckle loop 62 can also be fixed on the side of the cover 2, and the pull rod structure of the buckle 61 is adjusted accordingly. The above adjustments can be obtained by those skilled in the art without creative labor, and will not be elaborated in this embodiment.

[0058] During use, after inserting the limit ring 21 into the cover body 1, place the front pull rod of the buckle 61 at the buckle loop 62, and then press down the handle of the buckle 61 to quickly complete the locking of the cover 2 and the cover body 1, so that the cover 2 is reliably installed on the cover body 1, and at the same time, the seal at the connection between the cover 2 and the cover body 1 is ensured.

[0059] When maintenance is required, lift the handle of the buckle 61 to make the front pull rod of the buckle 61 leave the buckle loop 62, realizing the unlocking between the cover 2 and the cover body 1.

[0060] Embodiment III

[0061] As another specific embodiment of the present utility model, this embodiment provides a seismometer protective cover, referring to Figure 8 , Figure 9 , including a cover body 1 and a cover 2 that matches and is detachable from the top of the cover body 1. The cover body 1 and the cover 2 are connected by a third locking mechanism 7, and a seismometer 3 is placed inside the cover body 1.

[0062] Specifically, the third locking mechanism 7 includes an upper ear plate 71 fixed on the side of the cover 2, a lower ear plate 72 fixed on the upper side of the cover body 1, and an elastic clip 73 that clamps the upper ear plate 71 and the lower ear plate 72 in the middle. The clip 73 is type. The bottom surface of the upper ear plate 71 is flush with the bottom surface of the cover 2, and the top surface of the lower ear plate 72 is flush with the top surface of the cover body 1. The upper ear plate 71 and the lower ear plate 72 are vertically opposite. The number of the upper ear plate 71 and the lower ear plate 72 is equal.

[0063] The clip 73 includes a first clip piece 731 and a second clip piece 732 that face each other up and down, and a connecting plate 733 that is vertical and fixedly connected to the first clip piece 731 and the second clip piece 732. The first clip piece 731 is an arc-shaped that bends downward, and the second clip piece 732 is an arc-shaped that bends upward. The distance between the first clip piece 731 and the second clip piece 732 gradually decreases first and then increases in the direction away from the connecting plate 733. The enlarged opening of the clip 73 facilitates guiding the upper ear plate 71 and the lower ear plate 72, making it easier for the upper ear plate 71 and the lower ear plate 72 to be inserted into the clip 73 after they are opposed to each other. When the upper ear plate 71 and the lower ear plate 72 are inserted into the clip 73, the clip 73 undergoes a certain degree of deformation.

[0064] The top surface of the upper ear plate 71 is provided with an upper limit groove 711 that allows the first clip piece 731 to be inserted, and the bottom surface of the lower ear plate 72 is provided with a lower limit groove 721 that allows the second clip piece 732 to be inserted. The upper limit groove 711 and the lower limit groove 721 are vertically opposed. After the first clip piece 731 and the second clip piece 732 are respectively inserted into the upper limit groove 711 and the lower limit groove 721, the clip 73 clamps the upper ear plate 71 and the lower ear plate 72. The upper limit groove 711 forms a certain restriction on the first clip piece 731, and the lower limit groove 721 forms a certain restriction on the second clip piece 732, preventing the clip 73 from moving excessively in the direction perpendicular to the direction in which the upper ear plate 71 is inserted into the clip 73.

[0065] The number of the upper ear plates 71 and the lower ear plates 72 can be two, three or four.

[0066] During use, after inserting the limit ring 21 into the cover body 1, adjust the cover body 2 so that the upper limit groove 711 of the upper ear plate 71 is vertically opposed to the lower limit groove 721 of the lower ear plate 72. Then, insert the first clip piece 731 and the second clip piece 732 of the clip 73 into the upper limit groove 711 and the lower limit groove 721 respectively, completing the clamping of the clip 73 on the upper ear plate 71 and the lower ear plate 72, making the cover body 2 be reliably installed on the cover body 1, and at the same time ensuring the sealing at the connection between the cover body 2 and the cover body 1. Compared with the first embodiment, this embodiment is more time-saving and labor-saving.

[0067] The seismometer protective cover of the present utility model adopts a split design for the cover body 1 and the cover body 2, and is provided with a locking mechanism that can conveniently and quickly install the cover body 2 on the cover body 1 and remove the cover body 2 from the cover body 1. It not only realizes the effective protection of the seismometer by the protective cover during non-maintenance time, but also can quickly remove the cover body 2 during maintenance to repair the seismometer located inside the cover body 1 without removing the entire protective cover. After the maintenance is completed, the cover body 2 is locked on the cover body 1 again to achieve the enclosure of the cover body 1, with heat preservation, waterproofing and moisture isolation, so as to maintain a relatively independent internal environment inside the protective cover and reduce the influence of the external environment on the seismometer monitoring.

[0068] The above are only the preferred embodiments of the present utility model, and are not any other form of limitation to the present utility model. Any modification or equivalent change made according to the technical essence of the present utility model still belongs to the scope protected by the present utility model.

Claims

1. A seismometer protective cover, characterized in that: The invention comprises a cover body (1) which encloses a seismometer (3) and has upper and lower openings, and a cover body (2) which seals the cover body (1); the bottom end of the cover body (1) is fixedly connected to the base of the seismometer (3); a wire hole (11) is provided on the side wall of the cover body (1); the top end of the cover body (1) and the cover body (2) are detachably connected by a locking mechanism; and a space is left between the cover body (1), the cover body (2) and the seismometer (3).

2. The seismometer protective cover according to claim 1, characterized in that: The locking mechanism comprises a plurality of groups of first ear plates (51) and second ear plates (52) arranged in an upper and lower direction along the circumference of the cover body (1), wherein the first ear plates (51) are fixed on the cover body (2), and the second ear plates (52) are fixed on the cover body (1); the second ear plates (52) are fixedly connected to the pillar (53) at the bottom surface away from the first ear plates (51); the first ear plates (51) are provided with a first through hole (511), and the second ear plates (52) are provided with a second through hole (521); the pillar (53) is provided with a threaded hole (531) which is in communication with and coaxial with the first through hole (511) and the second through hole (521); the first ear plates (51) and the second ear plates (52) are connected by means of a fastening bolt (54) which passes through the first through hole (511) and the second through hole (521) in sequence and is threadedly connected to the pillar (53).

3. The seismometer protective cover according to claim 1, characterized in that: The locking mechanism comprises a plurality of buckles (61) fixed to the outer side surface of the upper part of the cover body (1) and arranged along the circumference of the cover body (1), and a buckle ring (62) fixed to the outer surface of the cover body (2) and cooperating with the buckles (61).

4. The seismometer protective cover according to claim 1, characterized in that: The locking mechanism comprises a plurality of groups of upper ear plates (71) and lower ear plates (72) arranged in a circumferential direction of the cover body (1) and opposed to each other, and a clamp (73) for clamping the upper ear plates (71) and the lower ear plates (72).

5. The seismometer protective cover according to claim 1, characterized in that: The protective cover is cylindrical.

6. The seismometer protective cover according to claim 1, characterized in that: A limiting ring (21) extending downward into the cover body (1) is fixed to the bottom surface of the cover body (2), and the outer side surface of the limiting ring (21) is in close contact with the inner side surface of the cover body (1).

7. The seismometer protective cover according to claim 1, characterized in that: A heating component (4) for maintaining a stable internal temperature is arranged inside the cover (1).

8. The seismometer protective cover according to claim 1, characterized in that: The side wall of the cover body (1) is provided with a transparent observation window.

9. The seismometer protective cover according to claim 1, characterized in that: The wire passing hole (11) is located at the lower part of the cover body (1).

10. The seismometer protective cover according to claim 1, characterized in that: The bottom cross-section of the cover body (1) is trapezoidal.

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