Rapid arrangement device for seismograph for micro-motion exploration
The rapid deployment device for seismographs with a large triangular structure solves the problem of low deployment efficiency of microseismic exploration arrays, enabling rapid, uniform deployment and efficient exploration, and is suitable for different exploration depths.
Patent Information
- Application Number
- CN202520226022.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-13
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2035-02-13
AI Technical Summary
The existing microseismic exploration array has low deployment efficiency and requires multiple adjustments to the spacing between measurement stations, making the deployment process cumbersome.
A rapid deployment device using seismographs with a large triangular structure is employed, including a large equilateral triangle and three medium-sized equilateral triangles. By deploying seismographs at specific vertices and center points, inter-station measurements are avoided, and exploration is carried out using the spatial autocorrelation method.
It improves the speed and efficiency of seismograph deployment, has wide applicability, uniform distribution of seismographs, is easy to operate, and is easy to carry and store, meeting the needs of different exploration depths.
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Figure CN223624433U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a seismograph deployment device, belonging to the field of micro-motion exploration seismograph deployment, and particularly to a rapid deployment device for micro-motion exploration seismographs. Background Technology
[0002] Microseismic exploration is a geophysical method that uses the constant, minute vibrations on the Earth's surface as the object of observation for geological exploration; typically, seismographs are deployed in an array to explore for these minute vibrations.
[0003] Chinese patent application number 201710227949.9, filed on April 10, 2017, discloses a micro-motion array deployment device, including a fixed support, a rotating platform, and a ranging device. The rotating platform consists of a circular frame, an equilateral triangular frame one, and an equilateral triangular frame two, wherein the equilateral triangular frame one is inscribed within the circular frame, and the equilateral triangular frame two is inscribed within the equilateral triangular frame one. The rotating platform is fixed on the fixed support. The ranging device includes multiple laser ranging probes equally spaced on the circular frame and a reflector used in conjunction with them. Although this design uses the laser ranging device to measure the spacing between the array stages to complete the array deployment, it still has the following drawbacks:
[0004] In this design, during the ranging process of the laser ranging probe, the laser is reflected by the reflector to complete the measurement of the distance between the stations. When the position of the reflector is inaccurate, the position of the reflector needs to be repeatedly adjusted, and then the laser is used to measure the distance between the stations until the measured distance between the stations meets the requirements. Only then can the deployment position of the seismograph be determined. Therefore, the deployment efficiency of the array is low.
[0005] The information disclosed in this background section is intended only to enhance understanding of the overall background of this application and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Summary of the Invention
[0006] The purpose of this invention is to overcome the shortcomings and problems of existing technologies, such as the need for multiple measurements of the distance between stations and low array deployment efficiency, and to provide a rapid deployment device for micro-motion exploration that does not require measuring the distance between stations and has high array deployment efficiency.
[0007] To achieve the above objectives, the technical solution of this utility model is:
[0008] A rapid deployment device for seismographs in micro-motion exploration, the device comprising a large triangle;
[0009] The large triangle includes a first side, a second side, and a third side. The intersection of the first and second sides is the first vertex. One end of the first side is connected to one side of the first medium-sized triangle. The intersection of the second and third sides is the second vertex. One end of the second side is connected to one side of the second medium-sized triangle. The intersection of the third and first sides is the third vertex. The third side is connected to one side of the third medium-sized triangle. The large triangle has a center point in its middle.
[0010] The first medium-sized triangle includes a central first vertex, a central second vertex, and a central third vertex; the second medium-sized triangle includes a central fourth vertex, a central fifth vertex, and a central sixth vertex; and the third medium-sized triangle includes a central seventh vertex, a central eighth vertex, and a central ninth vertex.
[0011] The first vertex is located on the extension line of the large triangle away from the center point, the fifth vertex is located on the extension line of the large triangle away from the center point, and the ninth vertex is located on the extension line of the large triangle away from the center point.
[0012] The large triangle is an equilateral triangle, the first medium-sized triangle is an equilateral triangle, the second medium-sized triangle is an equilateral triangle, and the third medium-sized triangle is an equilateral triangle.
[0013] The side length of the first medium-sized triangle is one-third of the length of the first side, and one side of the first medium-sized triangle is located at the center of the first side.
[0014] The side length of the second medium-sized triangle is one-third of the length of the second side, and one side of the second medium-sized triangle is located at the center of the second side.
[0015] The side length of the third medium-sized triangle is one-third of the length of the third side, and one side of the third medium-sized triangle is located at the center of the third side.
[0016] The large triangle includes an upper triangle and a lower platform. The bottom of the upper triangle is connected to the top of the lower platform, and the length of the bottom of the upper triangle is equal to the length of the top of the lower platform.
[0017] The first vertex is a through hole, the second vertex is a through hole, the third vertex is a through hole, the center point is a through hole, all vertices of the first medium-sized triangle are through holes, all vertices of the second medium-sized triangle are through holes, and all vertices of the third medium-sized triangle are through holes.
[0018] The side length of the first medium-sized triangle is 0.5 meters, the side length of the second medium-sized triangle is 0.5 meters, the side length of the third medium-sized triangle is 0.5 meters, and the side length of the large-sized triangle is 1.5 meters.
[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0020] 1. In this utility model, a rapid deployment device for seismographs in micro-motion exploration includes a large triangle. The large triangle includes a first side, a second side, and a third side. The intersection of the first, second, and third sides is the first vertex, the second vertex, and the third vertex. There is a center point in the middle of the large triangle. The first side connects to a first medium-sized triangle, which includes the first, second, and third vertices. The second side connects to a second medium-sized triangle, which includes the fourth, fifth, and sixth vertices. The third side connects to a third medium-sized triangle, which includes the seventh, eighth, and ninth vertices. In application, first determine the area to be explored, then place the device flat on the ground in that area, and then determine the deployment requirements for the seismographs. When it is necessary to explore the three-dimensional structure of shear wave velocity at a relatively deep underground depth, seismographs are sequentially deployed at the first vertex, second vertex, third vertex, and center point. When it is necessary to explore the three-dimensional structure of shear wave velocity at a relatively shallow underground depth, any number or all of the first, second, or third medium-sized triangles can be selected, and then seismographs are deployed at their vertices. The more medium-sized triangles, the wider the exploration range. When it is necessary to explore the three-dimensional structure of shear wave velocity at both relatively deep and relatively shallow underground depths simultaneously, seismographs are sequentially deployed at the first vertex, second vertex, third vertex, and center point, and then any number or all of the first, second, or third medium-sized triangles can be selected, and then seismographs are deployed at their vertices. The advantages of this utility model also include:
[0021] Firstly, there is no need to measure the distance between seismographs when setting up the seismographs, so the deployment speed is faster and the deployment efficiency is improved.
[0022] Secondly, the seismographs can be deployed according to the deployment requirements, thus making them widely applicable.
[0023] Therefore, this invention eliminates the need to measure the spacing between stations and achieves high efficiency in station array deployment.
[0024] 2. In this utility model's rapid deployment device for micro-motion exploration seismometers, the large triangle is an equilateral triangle, the first medium-sized triangle is an equilateral triangle, the second medium-sized triangle is an equilateral triangle, and the third medium-sized triangle is an equilateral triangle. One side of the first medium-sized triangle is located on the center one-third of the first side, one side of the second medium-sized triangle is located on the center one-third of the second side, and one side of the third medium-sized triangle is located on the center one-third of the third side. In application, the array distribution of the equilateral triangles is compatible with the spatial autocorrelation method. The first, second, and third medium-sized triangles are located at the centers of the first, second, and third sides, respectively. Therefore, the vertices of the first, second, and third medium-sized triangles are relatively evenly distributed, resulting in a relatively even distribution of seismometers, which is beneficial for subsequent exploration of the three-dimensional structure of underground shear wave velocity. Therefore, the seismometer distribution is relatively even when this utility model is applied.
[0025] 3. In this utility model's rapid deployment device for micro-motion exploration seismographs, the large triangle includes an upper triangular shape and a lower platform shape. The first vertex, second vertex, third vertex, center point, middle first vertex, middle second vertex, middle third vertex, fourth vertex, middle fifth vertex, middle sixth vertex, middle seventh vertex, middle eighth vertex, and middle ninth vertex are all through holes. In application, dividing the large triangle into upper triangular and lower platform shapes facilitates carrying the device and reduces its storage space. Since all vertices are through holes, inserting the seismograph into these holes completes the deployment, making operation convenient. Therefore, this utility model is easy to operate.
[0026] 4. In this utility model's rapid deployment device for micro-motion exploration seismographs, the side lengths of the first, second, and third medium-sized triangles are 0.5 meters, and the side length of the large triangle is 1.5 meters. During application, the side lengths of the first, second, and third medium-sized triangles, the side length of the large triangle, and the number of devices can all be set as needed. To meet actual exploration requirements, the side lengths of the first, second, and third medium-sized triangles are set to 0.5 meters, and the side length of the large triangle is set to 1.5 meters. Therefore, this utility model matches actual needs. Attached Figure Description
[0027] Figure 1 This is a schematic diagram of the structure of this utility model.
[0028] Figure 2 yes Figure 1 A schematic diagram of the structure of the first medium-sized triangle.
[0029] Figure 3 yes Figure 1A schematic diagram of the structure of the second medium-sized triangle.
[0030] Figure 4 yes Figure 1 A schematic diagram of the structure of the third medium-sized triangle.
[0031] Figure 5 This is a schematic diagram of the structure of Example 3.
[0032] Figure 6 yes Figure 5 A schematic diagram of the upper-middle triangle structure.
[0033] Figure 7 yes Figure 5 A schematic diagram of the lower platform type structure.
[0034] Figure 8 This is a sample drawing of this utility model.
[0035] Figure 9 This is a schematic diagram of the three-dimensional structure of the shear wave velocity in Example 1.
[0036] Figure 10 This is a structural schematic diagram of Example 5.
[0037] In the diagram: Large triangle 1, First side 11, Second side 12, Third side 13, First vertex 14, Second vertex 15, Third vertex 16, Center point 17, Upper triangle 18, Lower platform 19, First medium triangle 2, Middle first vertex 21, Middle second vertex 22, Middle third vertex 23, Second medium triangle 3, Middle fourth vertex 31, Middle fifth vertex 32, Middle sixth vertex 33, Third medium triangle 4, Middle seventh vertex 41, Middle eighth vertex 42, Middle ninth vertex 43, Small triangle 5. Detailed Implementation
[0038] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0039] Please see Figure 1 — Figure 10 A rapid deployment device for seismographs in micro-motion exploration, the device comprising a large triangle 1;
[0040] The large triangle 1 includes a first side 11, a second side 12, and a third side 13. The intersection of the first side 11 and the second side 12 is the first vertex 14. One end of the first side 11 is connected to one side of the first medium triangle 2. The intersection of the second side 12 and the third side 13 is the second vertex 15. One end of the second side 12 is connected to one side of the second medium triangle 3. The intersection of the third side 13 and the first side 11 is the third vertex 16. The third side 13 is connected to one side of the third medium triangle 4. The large triangle 1 has a center point 17 in its middle.
[0041] The first medium-sized triangle 2 includes a central first vertex 21, a central second vertex 22, and a central third vertex 23; the second medium-sized triangle 3 includes a central fourth vertex 31, a central fifth vertex 32, and a central sixth vertex 33; the third medium-sized triangle 4 includes a central seventh vertex 41, a central eighth vertex 42, and a central ninth vertex 43.
[0042] The first vertex 21 is located on the extension line of the large triangle 1 away from the center point 17, the fifth vertex 32 is located on the extension line of the large triangle 1 away from the center point 17, and the ninth vertex 43 is located on the extension line of the large triangle 1 away from the center point 17.
[0043] The large triangle 1 is an equilateral triangle, the first medium triangle 2 is an equilateral triangle, the second medium triangle 3 is an equilateral triangle, and the third medium triangle 4 is an equilateral triangle.
[0044] The side length of the first medium-sized triangle 2 is one-third of the length of the first side 11, and one side of the first medium-sized triangle 2 is located at the center of the first side 11.
[0045] The side length of the second medium-sized triangle 3 is one-third of the length of the second side 12, and one side of the second medium-sized triangle 3 is located at the center of the second side 12.
[0046] The side length of the third medium-sized triangle 4 is one-third of the length of the third side 13, and one side of the third medium-sized triangle 4 is located at the center of the third side 13.
[0047] The large triangle 1 includes an upper triangle 18 and a lower platform 19. The bottom of the upper triangle 18 is connected to the top of the lower platform 19, and the length of the bottom of the upper triangle 18 is equal to the length of the top of the lower platform 19.
[0048] The first vertex 14 is a through hole, the second vertex 15 is a through hole, the third vertex 16 is a through hole, the center point 17 is a through hole, all vertices of the first medium-sized triangle 2 are through holes, all vertices of the second medium-sized triangle 3 are through holes, and all vertices of the third medium-sized triangle 4 are through holes.
[0049] The side length of the first medium-sized triangle 2 is 0.5 meters, the side length of the second medium-sized triangle 3 is 0.5 meters, the side length of the third medium-sized triangle 4 is 0.5 meters, and the side length of the large-sized triangle 1 is 1.5 meters.
[0050] The supplementary description of this utility model is as follows:
[0051] The spatial autocorrelation method described in this invention refers to a microseismic observation method based on a seismograph array, mainly used to explore the three-dimensional structure of underground shear wave velocity, and then the underground structure can be obtained based on the three-dimensional structure of shear wave velocity.
[0052] Example 1:
[0053] Please see Figure 1 — Figure 10 A rapid deployment device for micro-motion exploration seismographs includes a large triangle 1. The large triangle 1 includes a first side 11, a second side 12, and a third side 13. The intersection of the first side 11 and the second side 12 is a first vertex 14. One end of the first side 11 connects to one side of a first medium-sized triangle 2. The intersection of the second side 12 and the third side 13 is a second vertex 15. One end of the second side 12 connects to one side of a second medium-sized triangle 3. The intersection of the third side 13 and the first side 11 is a third vertex 16. The third side 13 connects to one side of a third medium-sized triangle 4. A center point 17 exists in the middle of the large triangle 1. The first medium-sized triangle 2 includes a central first vertex 21, a central second vertex 22, and a central third vertex 23. The second medium-sized triangle 3 includes a central fourth vertex 31, a central fifth vertex 32, and a central sixth vertex 33. The third medium-sized triangle 4 includes a central seventh vertex 41, a central eighth vertex 42, and a central ninth vertex 43. The first vertex 21 is located on the extension line of the large triangle 1 away from the center point 17, the fifth vertex 32 is located on the extension line of the large triangle 1 away from the center point 17, and the ninth vertex 43 is located on the extension line of the large triangle 1 away from the center point 17.
[0054] In application, first determine the area to be explored, then place the device flat on the ground in that area. Next, determine the seismograph deployment requirements. The first deployment method: When exploring the three-dimensional structure of shear wave velocity at a relatively deep depth, deploy the seismographs sequentially at the first vertex 14, the second vertex 15, the third vertex 16, and the center point 17. The relatively large spacing between the seismographs at the first vertex 14, the second vertex 15, the third vertex 16, and the center point 17, combined with the spatial autocorrelation method, allows for the exploration of the three-dimensional structure of shear wave velocity at a relatively deep depth. The second deployment method: When exploring the three-dimensional structure of shear wave velocity at a relatively shallow depth, deploy the seismographs at the first medium-sized triangle 2, the second medium-sized triangle 3, or the third... The medium-sized triangle 4 can be selected. Any number of triangles can be chosen, or all vertices of the triangles can be selected for seismograph deployment. Specifically, seismographs can be deployed at the first vertex (21), second vertex (22), third vertex (23), fourth vertex (31), fifth vertex (32), sixth vertex (33), seventh vertex (41), eighth vertex (42), and ninth vertex (43). Combined with the spatial autocorrelation method, this allows for the exploration of the three-dimensional structure of shear wave velocity at shallower depths. The more medium-sized triangles selected, the wider the range of the seismograph's exploration. The first and second deployment methods can be combined to simultaneously explore the three-dimensional structure of shear wave velocity at both deeper and shallower depths. The exploration results are as follows... Figure 9 As shown; the first vertex 14, the second vertex 15, the third vertex 16, the center point 17, the first central vertex 21, the second central vertex 22, the third central vertex 23, the fourth central vertex 31, the fifth central vertex 32, the sixth central vertex 33, the seventh central vertex 41, the eighth central vertex 42, and the ninth central vertex 43 are pre-set seismograph placement points, so there is no need to measure the spacing between the seismographs when setting them up.
[0055] Example 2:
[0056] The basic content is the same as in Example 1, except that:
[0057] Please see Figure 1 — Figure 8 The large triangle 1 is an equilateral triangle, the first medium-sized triangle 2 is an equilateral triangle, the second medium-sized triangle 3 is an equilateral triangle, and the third medium-sized triangle 4 is an equilateral triangle. The side length of the first medium-sized triangle 2 is one-third the length of the first side 11, and one side of the first medium-sized triangle 2 is located at the center of the first side 11. The side length of the second medium-sized triangle 3 is one-third the length of the second side 12, and one side of the second medium-sized triangle 3 is located at the center of the second side 12. The side length of the third medium-sized triangle 4 is one-third the length of the third side 13, and one side of the third medium-sized triangle 4 is located at the center of the third side 13.
[0058] In application, the second vertex 22 and the third vertex 23 are located at the two trisection points of the first side 11, the fourth vertex 31 and the sixth vertex 33 are located at the two trisection points of the second side 12, and the seventh vertex 41 and the eighth vertex 42 are located at the two trisection points of the third side 13. Therefore, the seismographs located at the first vertex 14, the second vertex 15, the third vertex 16, the center point 17, the first vertex 21, the second vertex 22, the third vertex 23, the fourth vertex 31, the fifth vertex 32, the sixth vertex 33, the seventh vertex 41, the eighth vertex 42, and the ninth vertex 43 are relatively evenly distributed, which makes the exploration of the three-dimensional structure of shear wave velocity at shallower underground depths more uniform, thus resulting in better exploration effects.
[0059] Example 3:
[0060] The basic content is the same as in Example 1, except that:
[0061] Please see Figure 1 — Figure 8 The large triangle 1 includes an upper triangle 18 and a lower platform 19. The bottom of the upper triangle 18 is connected to the top of the lower platform 19, and the length of the bottom of the upper triangle 18 is equal to the length of the top of the lower platform 19. The first vertex 14, the second vertex 15, the third vertex 16, and the center point 17 are all through holes. All vertices of the first medium-sized triangle 2, the second medium-sized triangle 3, and the third medium-sized triangle 4 are all through holes.
[0062] In application, the upper triangular shape 18 and the lower platform shape 19 divide the device into two corresponding and symmetrical structures, which facilitates the storage of the device and reduces the space required for storage, thus improving the portability of the device. The first vertex 14, the second vertex 15, the third vertex 16, the center point 17, the middle first vertex 21, the middle second vertex 22, the middle third vertex 23, the middle fourth vertex 31, the middle fifth vertex 32, the middle sixth vertex 33, the middle seventh vertex 41, the middle eighth vertex 42, and the middle ninth vertex 43 are all through holes. During deployment, the seismographs can be directly inserted into all the through holes in sequence to complete the array deployment, which further improves the accuracy of seismograph positioning and is easy to operate.
[0063] Example 4:
[0064] The basic content is the same as in Example 1, except that:
[0065] Please see Figure 1 — Figure 8The side length of the first medium-sized triangle 2 is 0.5 meters, the side length of the second medium-sized triangle 3 is 0.5 meters, the side length of the third medium-sized triangle 4 is 0.5 meters, and the side length of the large-sized triangle 1 is 1.5 meters.
[0066] In application, the side lengths of the first medium-sized triangle 2, the second medium-sized triangle 3, and the third medium-sized triangle 4 can be set as needed, as can the side length of the large-sized triangle 1. When the side lengths of the first medium-sized triangle 2, the second medium-sized triangle 3, and the third medium-sized triangle 4 are 0.5 meters, and the side length of the large-sized triangle 1 is 1.5 meters, basic exploration needs can be met.
[0067] Example 5:
[0068] The basic content is the same as in Example 1, except that:
[0069] Please see Figure 1 — Figure 10 The device includes multiple small triangles 5, which are connected to the first side 11, the second side 12, the third side 13, the first medium triangle 2, the second medium triangle 3, or the third medium triangle 4.
[0070] In application, multiple small triangles 5 can be added to this device as needed. The side length of the small triangles 5 is shorter, that is, the spacing between the seismographs deployed on the small triangles 5 is shorter. The deployed seismographs can meet the exploration requirements of the three-dimensional structure of shallow underground shear wave velocity. Alternatively, new seismograph deployment points can be set near the center point 17 as needed to meet exploration requirements.
[0071] The above description is only a preferred embodiment of the present utility model. The protection scope of the present utility model is not limited to the above embodiments. Any equivalent modifications or changes made by those skilled in the art based on the content disclosed in the present utility model should be included in the protection scope recorded in the claims.
Claims
1. A rapid deployment device for seismographs in micro-motion exploration, characterized in that: The device includes a large triangle (1); The large triangle (1) includes a first side (11), a second side (12) and a third side (13). The intersection of the first side (11) and the second side (12) is the first vertex (14). One end of the first side (11) is connected to one side of the first medium triangle (2). The intersection of the second side (12) and the third side (13) is the second vertex (15). One end of the second side (12) is connected to one side of the second medium triangle (3). The intersection of the third side (13) and the first side (11) is the third vertex (16). The third side (13) is connected to one side of the third medium triangle (4). The large triangle (1) has a center point (17) in the middle.
2. The rapid deployment device for micro-motion exploration seismographs according to claim 1, characterized in that: The first medium-sized triangle (2) includes the first central vertex (21), the second central vertex (22), and the third central vertex (23); the second medium-sized triangle (3) includes the fourth central vertex (31), the fifth central vertex (32), and the sixth central vertex (33); the third medium-sized triangle (4) includes the seventh central vertex (41), the eighth central vertex (42), and the ninth central vertex (43).
3. The rapid deployment device for micro-motion exploration seismographs according to claim 2, characterized in that: The first vertex (21) is located on the extension line of the large triangle (1) away from the center point (17), the fifth vertex (32) is located on the extension line of the large triangle (1) away from the center point (17), and the ninth vertex (43) is located on the extension line of the large triangle (1) away from the center point (17).
4. A rapid deployment device for seismographs in micro-motion exploration according to claim 1, 2, or 3, characterized in that: The large triangle (1) is an equilateral triangle, the first medium triangle (2) is an equilateral triangle, the second medium triangle (3) is an equilateral triangle, and the third medium triangle (4) is an equilateral triangle.
5. The rapid deployment device for micro-motion exploration seismographs according to claim 4, characterized in that: The side length of the first medium-sized triangle (2) is one-third of the length of the first side (11), and one side of the first medium-sized triangle (2) is located at the center of the first side (11).
6. The rapid deployment device for micro-motion exploration seismographs according to claim 5, characterized in that: The side length of the second medium-sized triangle (3) is one-third of the length of the second side (12), and one side of the second medium-sized triangle (3) is located at the center of the second side (12).
7. A rapid deployment device for micro-motion exploration seismographs according to claim 6, characterized in that: The side length of the third medium-sized triangle (4) is one-third of the length of the third side (13), and one side of the third medium-sized triangle (4) is located at the center of the third side (13).
8. A rapid deployment device for seismographs in micro-motion exploration according to claim 1, 2 or 3, characterized in that: The large triangle (1) includes an upper triangle (18) and a lower platform (19). The bottom of the upper triangle (18) is connected to the top of the lower platform (19). The length of the bottom of the upper triangle (18) is equal to the length of the top of the lower platform (19).
9. A rapid deployment device for micro-motion exploration seismographs according to claim 8, characterized in that: The first vertex (14) is a through hole, the second vertex (15) is a through hole, the third vertex (16) is a through hole, the center point (17) is a through hole, the vertices of the first medium-sized triangle (2) are all through holes, the vertices of the second medium-sized triangle (3) are all through holes, and the vertices of the third medium-sized triangle (4) are all through holes.
10. A rapid deployment device for seismographs in micro-motion exploration according to claim 1, 2, or 3, characterized in that: The side length of the first medium-sized triangle (2) is 0.5 meters, the side length of the second medium-sized triangle (3) is 0.5 meters, the side length of the third medium-sized triangle (4) is 0.5 meters, and the side length of the large-sized triangle (1) is 1.5 meters.
Citation Information
Patent Citations
A micro-motion array deployment device
CN107065004B