An engineering survey and landslide prevention early warning device

Abstract

The present invention discloses an engineering survey and landslide prevention warning device, comprising an adjusting mechanism and a positioning mechanism. The adjusting mechanism is composed of a mounting part and a detection part arranged inside the mounting part, a connecting part and a movable component for limiting the position of the connecting part, and the mounting part is composed of a first cylinder, a movable body and a second cylinder. The positioning mechanism is provided with a sliding part and a positioning component symmetrically arranged at both ends of the sliding part, and the positioning component is provided with a pulling part, a fixing part, a second elastic part and a first positioning part and a second positioning part arranged rotationally symmetrically. The engineering survey and landslide prevention warning device has a compact structure and a clever design. It is not only convenient to adjust the insertion depth of the detection part, but also can be quickly fixed. Moreover, when it is not needed for warning use in the later stage, the inserted landslide prevention warning device can be taken out so that it can be reused. At the same time, its structure is compact, which is convenient for exploration personnel to carry when conducting exploration.

Description

Technical Field

[0001] The invention relates to landslide early warning technology, in particular to an engineering survey and landslide prevention early warning device. Background Art

[0002] Due to the different geographical locations and geological structures of each region, the geological disasters in the epigenetic zone are complex due to the combined influence of multiple source mechanisms such as structural faults, groundwater, and ground fissures. The research foundation of the formation mechanism, zoning assessment, prevention and control theory, and emergency rescue of sudden geological disasters is extremely weak, which requires the safety considerations during engineering construction and operation to shift from single disasters to multiple disasters. This shift requires us to study the disaster mechanism of multiple disasters and their safety emergency management model by integrating high-level theoretical analysis, high-tech, and cross-integrated technical experimental methods. At the same time, the impact of natural disasters on disaster evacuation, emergency rescue force deployment, resource scheduling, social force participation, military-police-civilian coordination, etc. in key geological disaster risk areas cannot be ignored. Therefore, it is urgent to respond to early warning and prevention and control under different sudden natural disasters, and a landslide warning device that is easy to install and can adapt to different complex terrains is needed.

[0003] Therefore, a monitoring and early warning device is provided in the prior art to monitor and warn the above-mentioned disasters. However, the existing monitoring and early warning equipment has the following problems: first, the installation stability is not good enough, which in turn affects the monitoring effect of the sensor; second, the device is difficult to install quickly, which is not conducive to recycling and reuse, and is difficult to adapt to different complex terrains. Summary of the invention

[0004] In order to solve the defects of the above-mentioned prior art, the present invention proposes an engineering survey and landslide prevention early warning device.

[0005] The technical solution of the present invention is achieved in this way:

[0006] An engineering survey and landslide prevention early warning device, characterized in that it comprises:

[0007] The adjusting mechanism is composed of a mounting member and a detection member arranged inside the mounting member, a connecting member and a movable assembly for limiting the position of the connecting member. The mounting member is composed of a first cylinder, a movable body and a second cylinder. The interior of the first cylinder is hollowed out to form a first movable area, the interior of the movable body forms a third movable area, and the interior of the second cylinder forms a second movable area. The first movable area, the second movable area and the third movable area are connected. The first cylinder is provided with a cover plate, and a through hole is provided in the middle of the cover plate. The detection member is arranged in the first movable area, and one end of the detection member extends out of the first movable area through the through hole. The detection member is sleeved with a first elastic member, one end of the first elastic member contacts the detection member, and the other end remains in contact with the cover plate. The connecting member is provided at multiple locations, and the connecting member is connected end to end and remains connected to the detection member. The movable assembly is arranged in the third movable area. The movable assembly is composed of symmetrically arranged movable members. The movable member is provided with a first hinged rod, and the first hinged rod is installed on the movable body. A passing area is formed between the movable members, and the connecting member is arranged in the passing area. The movable body is provided with a second hinged rod.

[0008] The cam is an elastic member connected to the first end of the second cam and the elastic member is connected to the first end of the second cam.

[0009] In the present invention, the detection member is composed of a detection head, a rod body and a connecting disk, the first elastic member is sleeved on the rod body, the detection head is located outside the first active area, and the connecting disk is connected to the connecting member.

[0010] In the present invention, the connecting piece is composed of a guide body, a columnar body and an unlocking body, the guide body is connected to the unlocking body through the columnar body, the guide body is provided with a first contact surface, the first contact surface is provided with a first threaded hole, the guide body is also provided with an inclined surface and an annular surface, the diameter of the annular surface is larger than the diameter of the columnar body, the diameter of the unlocking body is smaller than the diameter of the columnar body, and the unlocking body is provided with a first threaded portion that cooperates with the first threaded hole.

[0011] In the present invention, one end of the movable part forms a limiting end, and the other end forms a rotating end. The limiting end is provided with a first plane and a second plane, and the first plane and the second plane are vertically arranged between them. The limiting end is provided with a third hinge rod, and the movable part and the third hinge rod on the movable part are connected by a tension spring.

[0012] In the present invention, when the tension spring is in a stretched state, the first plane corresponds to the first plane, and the distance between the first plane and the first plane is H1, and the distance H1 matches the diameter of the columnar body.

[0013] In the present invention, when the tension spring is in a natural state, the second plane corresponds to the second plane, and the distance between the second plane and the second plane is H2, the distance H2 is smaller than the diameter of the columnar body, and the distance H2 is larger than the diameter of the unlocking body.

[0014] In the present invention, the movable part is provided with a first guide surface, a second guide surface and a third guide surface, the first guide surface is connected to the second plane, the second guide surface is connected to the first plane, the second guide surface is connected to the third guide surface, and the angle between the second guide surface and the third guide surface is less than 180°.

[0015] In the present invention, a second threaded hole is provided in the middle of the adjusting member, and a second threaded portion matching with the second threaded hole is provided on the second cylinder.

[0016] In the present invention, the first positioning member and the second positioning member are provided with a rotation hole, the rotation hole is installed on the second hinge rod, and the first positioning member and the second positioning member are also provided with a spike portion and a plurality of teeth.

[0017] In the present invention, both the first positioning member and the second positioning member are provided with a blocking block, and the blocking block is used to limit the rotation angle of the first positioning member and the second positioning member.

[0018] The engineering survey and landslide warning device of the present invention has the following beneficial effects: the engineering survey and landslide warning device has a compact structure and a clever design. It is not only convenient to adjust the insertion depth of the detection member, but also can be quickly fixed. When the warning is not needed in the later stage, the inserted landslide warning device can be taken out so that it can be reused. At the same time, it has a compact structure, which is convenient for prospectors to carry when conducting exploration. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the engineering survey and landslide prevention early warning device of the present invention;

[0020] Figure 2 for Figure 1 Exploded diagram of

[0021] Figure 3 for Figure 2 Cross-sectional view of the mounting parts in FIG.

[0022] Figure 4 for Figure 3 A local enlarged view of point A in FIG.

[0023] Figure 5 for Figure 2 Schematic diagram of some structures in ;

[0024] Figure 6 for Figure 5 A local enlarged view of point B in FIG.

[0025] Figure 7 for Figure 5 Schematic diagram of the structure of the detection parts and the connecting parts;

[0026] Figure 8 for Figure 5 Schematic diagram of the connector structure in FIG.

[0027] Fig. 9 for Figure 6 A schematic diagram of the structure of the rotating state of the active components in FIG.

[0028] Fig.10 for Figure 2 Schematic diagram of the positioning mechanism structure;

[0029] Fig.11 for Fig.10 The main view of

[0030] Fig.12 for Fig.10 Exploded diagram of some structures;

[0031] Fig.13 for Fig.12 A schematic diagram of the structure of the first positioning member in FIG.

[0032] Fig.14 for Fig.12 Schematic diagram of the structure of the second elastic member.

[0033] In the figure: adjustment mechanism 1, positioning mechanism 2, detection member 3, detection head 4, mounting member 5, connecting member 6, movable assembly 7, first cylinder 8, movable body 9, second cylinder 10, first movable area 11, third movable area 12, second movable area 13, cover plate 14, through hole 15, rod body 16, first elastic member 17, movable member 18, first hinge rod 19, blocking block 20, second hinge rod 21, connecting plate 22, guide body 23, columnar body 24, unlocking body 25, first threaded hole 27, inclined surface 28, annular surface 29, first threaded portion 31, second contact surface 32, limiting end 33, rotating end 34, first plane 35, second plane 36, third hinge rod 37, tension spring 38, first limiting space 39, second limiting space 40, first guide surface 41, second guide surface Guide surface 42, third guide surface 43, passing area 44, sliding member 45, positioning assembly 46, pulling member 47, fixing member 48, second elastic member 49, first positioning member 50, second positioning member 51, extension arm 52, retaining member 53, hook body 54, mounting head 55, third threaded portion 56, third threaded hole 57, blocking plate 58, spiral segment 59, first mounting rod 60, second mounting rod 61, mounting area 62, first mounting hole 63, second mounting hole 64, V-shaped portion 65, first pulling rod 66, second pulling rod 67, first pulling arm 68, second pulling arm 69, first fixing hole 70, second fixing hole 71, reinforcing rod 72, third elastic member 73, adjusting member 74, second threaded hole 75, second threaded portion 76, rotating hole 77, spike portion 78, and teeth 79. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0035] like Figures 1 to 14 As shown, the engineering survey and early warning device for preventing landslides of the present invention comprises an adjusting mechanism 1 and a positioning mechanism 2. The positioning mechanism 2 is installed on the adjusting mechanism 1. The adjusting mechanism 1 is used to change the insertion depth of the detection member 3, and the positioning mechanism 2 is used to fix the adjusting mechanism 1, thereby fixing the position of the detection head 4. The early warning device for preventing landslides can not only facilitate the adjustment of the insertion depth of the detection member 3, but also achieve rapid fixation. Moreover, when the early warning is not needed in the later stage, the inserted early warning device for preventing landslides can be taken out so that it can be reused. At the same time, its structure is compact, which is convenient for the prospectors to carry when conducting exploration.

[0036] The adjustment mechanism 1 is composed of a mounting part 5, a detection part 3 arranged inside the mounting part 5, a connecting part 6, and a movable component 7 for limiting the position of the connecting part 6. The mounting part 5 is used to realize the positioning of the connecting part 6 and the installation of the detection part 3. There are multiple connecting parts 6, and the number of connecting parts 6 can be increased or reduced according to the actual insertion depth of the detection head 4, so as to make timely changes for different exploration environments. The detection head 4 is an ultrasonic sensor that can detect the internal structure of rocks, mines, tunnels, etc., detect the internal vibration frequency of the mountain, and thus transmit the data to the control system in a timely manner, so that the control system and the staff can make timely analysis.

[0037] Ultrasonic sensors can use the propagation characteristics of ultrasound in the medium for exploration. When exploring the interior of a mountain, they mainly rely on the propagation speed, attenuation characteristics, reflection, refraction and other phenomena of ultrasound in the rock. By analyzing these phenomena, the structure, rock properties and possible abnormal bodies inside the mountain can be inferred.

[0038] The mounting member 5 is composed of a first cylinder 8, a movable body 9 and a second cylinder 10. The interior of the first cylinder 8 is hollowed out to form a first active area 11, the interior of the movable body 9 forms a third active area 12, and the interior of the second cylinder 10 forms a second active area 13. The first active area 11, the second active area 13 and the third active area 12 are connected, and the movable body 9 is arranged between the first cylinder 8 and the second cylinder 10.

[0039] A cover plate 14 is provided on the first cylinder 8, and a through hole 15 is provided in the middle of the cover plate 14. The cross section of the through hole 15 is square, and the cross section of the rod body 16 is also square, so that the square through hole 15 can limit the rod body 16 and prevent the rod body 16 from rotating, but can achieve the sliding of the rod body 16.

[0040] The detection member 3 is arranged in the first active area 11, and one end thereof extends out of the first active area 11 through the through hole 15. A first elastic member 17 is sleeved on the detection member 3, one end of the first elastic member 17 contacts the detection member 3, and the other end remains in contact with the cover plate 14. The connecting member 6 is provided at multiple locations, and the connecting member 6 is connected end to end and remains connected to the detection member 3.

[0041] The movable component 7 is arranged in the third movable area 12. The movable component 7 is composed of symmetrically arranged movable parts 18. The movable parts 18 are provided with a first hinged rod 19. The first hinged rod 19 is installed on the movable body 9. A passing area 44 is formed between the movable parts 18. The connecting part 6 is arranged in the passing area 44. The movable body 9 is provided with a second hinged rod 21.

[0042] The detection member 3 is composed of a detection head 4, a rod body 16 and a connection disk 22. The first elastic member 17 is sleeved on the rod body 16. The detection head 4 is located outside the first active area 11, and the connection disk 22 is connected to the connection member 6. One end of the first elastic member 17 is in contact with the cover body, and the other end is kept in contact with the connection disk 22. When the detection member 3 is pushed, the first elastic member 17 is blocked by the cover plate 14, so that the first elastic member 17 is compressed and deformed.

[0043] Among them, a connecting member 6 is set at the lower end of the connecting disk 22. The connecting member 6 is directly installed at the lower end of the connecting disk 22, or it can form an integrated structure with the connecting disk 22. Then, the number of connecting members 6 is increased according to actual needs to control the insertion depth of the detection head 4.

[0044] The connecting member 6 is composed of a guide body 23, a columnar body 24 and an unlocking body 25. The guide body 23 is connected to the unlocking body 25 through the columnar body 24, the guide body 23 is provided with a first contact surface 26, the first contact surface 26 is provided with a first threaded hole 27, the guide body 23 is also provided with an inclined surface 28 and an annular surface 29, the diameter of the annular surface 29 is larger than the diameter of the columnar body 24, the diameter of the unlocking body 25 is smaller than the diameter of the columnar body 24, and the unlocking body 25 is provided with a first threaded portion 31 that matches the first threaded hole 27.

[0045] A second contact surface 32 is provided at the lower end of the guide body 23 . The first contact surface 26 and the second contact surface 32 are both planes. The diameter of the first contact surface 26 is smaller than the diameter of the second contact surface 32 .

[0046] When the connecting members 6 are connected, the first threaded portion 31 on one connecting member 6 is installed correspondingly to the first threaded hole 27 on another connecting member 6 .

[0047] One end of the movable member 18 forms a limiting end 33, and the other end forms a rotating end 34. The limiting end 33 is used to limit the connection member 6 between the movable members 18, and the rotating end 34 is used to cooperate with the limiting end 33 to guide the insertion of the connection member 6. A first plane 35 and a second plane 36 are provided on the limiting end 33, and the first plane 35 and the second plane 36 are vertically arranged. A third hinge rod 37 is provided on the limiting end 33, and the movable member 18 and the third hinge rod 37 on the movable member 18 are connected by a tension spring 38. A first limiting space 39 is formed between the first plane 35 and the first plane 35, and a second limiting space 40 is formed between the second plane 36 and the second plane 36.

[0048] When the tension spring 38 is in a stretched state, the first plane 35 corresponds to the first plane 35, and the distance between the first plane 35 and the first plane 35 is H1, and the distance H1 matches the diameter of the columnar body 24. When the tension spring 38 is in a natural state, the second plane 36 corresponds to the second plane 36, and the distance between the second plane 36 and the second plane 36 is H2, and the distance H2 is less than the diameter of the columnar body 24, and the distance H2 is greater than the diameter of the unlocking body 25.

[0049] The movable part 18 is provided with a first guide surface 41, a second guide surface 42 and a third guide surface 43, the first guide surface 41 is connected to the second plane 36, the second guide surface 42 is connected to the first plane 35, the second guide surface 42 is connected to the third guide surface 43, and the angle between the second guide surface 42 and the third guide surface 43 is less than 180°.

[0050] like Fig. 9 As shown, when the movable member 18 is in a vertical state, the columnar body 24 on the connecting member 6 is placed in the first limiting space 39, and the first contact surface 26 is kept in contact with the columnar body 24. The tension spring 38 is in a stretched state, and the second contact surface 32 is kept in contact with the second plane 36, so that the movable member 18 in the vertical state can support the connecting member 6. At this time, the connecting member 6 is pushed by the elastic force of the first elastic member 17, and the thrust acts on the movable member 18 to keep the position of the movable member 18 unchanged. When the movable member 18 is in a horizontal setting, a second limiting space 40 is formed between the second planes 36 on the movable member 18, and the unlocking body 25 is in the second limiting space 40, but the distance of the second limiting space 40 is greater than the diameter of the unlocking body 25. At this time, the tension spring 38 is in a natural state.

[0051] When the detection member 3 needs to be pushed to limit, it only needs to be directly inserted, so that the guide body 23 on the connecting member 6 can first push the first plane 35, then keep the second guide surface 42 in contact with the inclined surface 28, and push the limit end 33 to rotate upward, keep the tension spring 38 stretched, so that the guide body 23 can pass through the passing area 44 between the movable members 18. When reaching the specified position, the columnar body 24 is kept in the first limit space 39, and the second contact surface 32 is in contact with the second plane 36.

[0052] When the position of the detection member 3 needs to be pulled out, the connection member 6 needs to be pushed toward the detection head 4 first, so that the columnar body 24 passes over the first limiting space 39, so that the unlocking body 25 is placed in the first limiting space 39. Since the diameter of the unlocking body 25 is smaller than the diameter of the columnar body 24, the limiting end 33 cannot contact the unlocking body 25, and the movable member 18 is kept reset under the elastic force of the tension spring 38, so that the unlocking body 25 is placed in the second limiting space 40. At this time, the connection member 6 can be pulled, so that the guide body 23 on the connection member 6 pushes the first guide surface 41, pushes the limiting end 33, and makes the limiting end 33 rotate downward, so that the guide body 23 can pass over the limiting end 33, so that the connection member 6 can be taken out from between the movable members 18, and the detection member 3 is pulled, so as to change the position of the detection head 4.

[0053] The positioning mechanism 2 is arranged on the mounting member 5, and the positioning mechanism 2 is provided with a sliding member 45 and positioning components 46 symmetrically arranged at both ends of the sliding member 45, and the positioning component 46 is provided with a pulling member 47, a fixing member 48, a second elastic member 49, and a first positioning member 50 and a second positioning member 51 that are rotationally symmetrically arranged, and the first positioning member 50, the second positioning member 51, the second elastic member 49 and the fixing member 48 are installed on the second hinge rod 21. A symmetrical extension arm 52 is arranged on the sliding member 45, and a retaining member 53 is arranged on the extension arm 52, and one end of the retaining member 53 is connected to the extension arm 52, and the other end forms a hook body 54, and the middle of the pulling member 47 is arranged in the hook body 54.

[0054] The fixing member 48 comprises a mounting head 55 and a third threaded portion 56 . A third threaded hole 57 cooperating with the third threaded portion 56 is provided on the second hinge rod 21 . The fixing member 48 also comprises a blocking plate 58 . The blocking plate 58 contacts the first positioning member 50 .

[0055] The second elastic member 49 is composed of a spiral section 59 and a first mounting rod 60 and a second mounting rod 61 disposed at both ends of the spiral section 59. A mounting area 62 is formed in the middle of the spiral section 59, and the second elastic member 49 is disposed on the second hinge rod 21 through the mounting area 62. A first mounting hole 63 is disposed on the first positioning member 50 to cooperate with the first mounting rod 60, and a second mounting hole 64 is disposed on the second positioning member 51 to cooperate with the second mounting rod 61. When the first positioning member 50 rotates, since it rotates downward, the first mounting rod 60 pushes the spiral section 59 to deform, so that the spiral sections 59 that were originally close together are separated, and the second mounting rod 61 also pushes the spiral section 59 to deform, so that the spiral sections 59 that were originally close together are separated.

[0056] The pulling member 47 is composed of a V-shaped portion 65 and a first pulling rod 66 and a second pulling rod 67 arranged at both ends of the V-shaped portion 65. The first pulling rod 66 is provided with a first pulling arm 68, and the second pulling rod 67 is provided with a second pulling arm 69. The first pulling rod 66 and the first pulling arm 68 are vertically arranged, and the second pulling rod 67 and the second pulling arm 69 are vertically arranged. The first positioning member 50 is provided with a first fixing hole 70, and the second positioning member 51 is provided with a second fixing hole 71. The first pulling arm 68 is arranged in the first fixing hole 70, and the second pulling arm 69 is arranged in the second fixing hole 71. The first pulling rod 66, the second pulling rod 67 and the V-shaped portion 65 are connected by a reinforcing rod 72.

[0057] One end of the pulling member 47 is connected to the first positioning member 50, and the other end is connected to the second positioning member 51. The retaining member 53 is movably connected to the middle of the pulling member 47. One end of the second elastic member 49 is connected to the first positioning member 50, and the other end is connected to the second positioning member 51. The third elastic member 73 and the adjusting member 74 are sleeved on the second cylinder 10. One end of the third elastic member 73 contacts the sliding member 45, and the other end contacts the adjusting member 74. The middle of the adjusting member 74 is provided with a second threaded hole 75, and the second cylinder 10 is provided with a second threaded portion 76 that matches the second threaded hole 75. When the adjusting member 74 rotates, the elastic force of the third elastic member 73 can be changed, thereby changing the elastic force of the pulling sliding member 45.

[0058] The retaining member 53 is pulled to compress the third elastic member 73 , and the pulling member 47 is kept to drive the first positioning member 50 and the second positioning member 51 to rotate on the second hinge rod 21 , and the second elastic member 49 is kept to deform elastically.

[0059] The first positioning member 50 and the second positioning member 51 are provided with a rotation hole 77, which does not coincide with the center line of the first positioning member 50 and the second positioning member 51, and is eccentrically arranged. The rotation hole 77 is installed on the second hinge rod 21. The first positioning member 50 and the second positioning member 51 are also provided with a spike portion 78 and a plurality of teeth 79. The teeth 79 and the spike portion 78 can contact with the rock mass or soil, so that fixation is achieved through the teeth 79 and the spike portion 78.

[0060] The first positioning member 50 and the second positioning member 51 are both provided with a blocking block 20, which is used to limit the rotation angle of the first positioning member 50 and the second positioning member 51. The blocking blocks 20 on the first positioning member 50 and the second positioning member 51 block the first positioning member 50 and the second positioning member 51 from rotating toward each other, so that the blocking blocks 20, at the position where they block the first positioning member 50 and the second positioning member 51, keep the distance between the spikes 78 on the first positioning member 50 and the second positioning member 51 at the maximum. When the retaining member 53 is pulled, the retaining member 53 drives the sliding member 45 to compress the third elastic member 73, thereby driving the pulling member 47, so that the pulling member 47 pulls the first positioning member 50 and the second positioning member 51, and keeps the first positioning member 50 and the second positioning member 51 rotating around the second hinge rod 21, so that the maximum distance between the first positioning member 50 and the spike portion 78 on the second positioning member 51 changes to the minimum distance, and the entire anti-collapse warning device can be inserted into the crack or the drilled hole to achieve rapid installation, improve the installation efficiency of the anti-collapse warning device, save time, and improve the overall engineering survey efficiency.

[0061] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An engineering survey and landslide prevention early warning device, characterized in that: include: The adjusting mechanism is composed of a mounting member, a detecting member arranged inside the mounting member, a connecting member, and a movable assembly for limiting the position of the connecting member. The mounting member is composed of a first cylinder, a movable body, and a second cylinder. The interior of the first cylinder is hollowed out to form a first movable area, the interior of the movable body forms a third movable area, and the interior of the second cylinder forms a second movable area. The first movable area, the second movable area, and the third movable area are connected. The first cylinder is provided with a cover plate, and a through hole is provided in the middle of the cover plate. The detecting member is arranged in the first movable area, and one end of the detecting member extends out of the first movable area through the through hole. The detecting member is sleeved with a first elastic member, one end of the first elastic member contacts the detecting member, and the other end remains in contact with the cover plate. The connecting member is provided at multiple locations, and the connecting member is connected end to end and remains connected to the detecting member. The movable assembly is arranged in the third movable area. The movable assembly is composed of symmetrically arranged movable members. The movable member is provided with a first hinged rod, and the first hinged rod is installed on the movable body. A passing area is formed between the movable members, and the connecting member is arranged in the passing area. The movable body is provided with a second hinged rod. The cam is an elastic member connected to the first end of the second cam and the elastic member is connected to the first end of the second cam.

2. The engineering survey and landslide prevention early warning device according to claim 1 is characterized in that: The detection member is composed of a detection head, a rod body and a connecting disk. The first elastic member is sleeved on the rod body. The detection head is located outside the first active area. The connecting disk is connected to the connecting member.

3. The engineering survey and landslide prevention early warning device according to claim 1, characterized in that: The connecting piece is composed of a guide body, a columnar body and an unlocking body, the guide body is connected to the unlocking body through the columnar body, the guide body is provided with a first contact surface, the first contact surface is provided with a first threaded hole, the guide body is also provided with an inclined surface and an annular surface, the diameter of the annular surface is larger than the diameter of the columnar body, the diameter of the unlocking body is smaller than the diameter of the columnar body, and the unlocking body is provided with a first threaded portion that cooperates with the first threaded hole.

4. The engineering survey and landslide prevention early warning device according to claim 3 is characterized in that: One end of the movable part forms a limiting end, and the other end forms a rotating end. The limiting end is provided with a first plane and a second plane, and the first plane and the second plane are vertically arranged between them. The limiting end is provided with a third hinge rod, and the movable part and the third hinge rod on the movable part are connected by a tension spring.

5. The engineering survey and landslide prevention early warning device according to claim 4 is characterized in that: When the tension spring is in a stretched state, the first plane corresponds to the first plane, and the distance between the first plane and the first plane is H1, and the distance H1 matches the diameter of the columnar body.

6. The engineering survey and landslide prevention early warning device according to claim 5, characterized in that: When the tension spring is in a natural state, the second plane corresponds to the second plane, and the distance between the second plane and the second plane is H2, the distance H2 is smaller than the diameter of the columnar body, and the distance H2 is larger than the diameter of the unlocking body.

7. The engineering survey and landslide prevention early warning device according to claim 6, characterized in that: The movable part is provided with a first guide surface, a second guide surface and a third guide surface, the first guide surface is connected to the second plane, the second guide surface is connected to the first plane, the second guide surface is connected to the third guide surface, and the angle between the second guide surface and the third guide surface is less than 180°.

8. The engineering survey and landslide prevention early warning device according to claim 1, characterized in that: A second threaded hole is arranged in the middle of the adjusting member, and a second threaded portion matching with the second threaded hole is arranged on the second cylinder.

9. The engineering survey and landslide prevention early warning device according to claim 1, characterized in that: The first positioning member and the second positioning member are provided with a rotation hole, and the rotation hole is installed on the second hinge rod. The first positioning member and the second positioning member are also provided with a spike portion and a plurality of teeth.

10. The engineering survey and landslide prevention early warning device according to claim 9, characterized in that: The first positioning member and the second positioning member are both provided with a blocking block, and the blocking block is used to limit the rotation angle of the first positioning member and the second positioning member.

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