A landmark device capable of underwater positioning

Abstract

The present invention relates to the field of underwater positioning technology, and specifically to a landmark device that can be positioned underwater, comprising: a mounting seat, the upper end of which is fixedly connected to a landmark body, the upper end of which is fixedly connected to a signal transmitter; a fixing mechanism, the fixing mechanism comprising a first one-way bearing and a second one-way bearing, a groove is provided at the lower end of the mounting seat, a T-shaped plate is slidably connected to the inner wall of the groove, an insertion block is fixedly connected to the lower end of the T-shaped plate, and a limiting ring is fixedly connected to the inner wall of the groove near the notch. The present invention is provided with a fixing mechanism, which can intermittently drive two tooth plates to move downward, and then drive the insertion block to move downward into the soil in the water through the T-shaped plate, so as to fix the position of the landmark body, thereby avoiding the phenomenon in the prior art that the landmark is placed in the water only by the weight of the landmark, so that the landmark will follow the flow of the water, thereby causing the initial position of the landmark to change, affecting the measurement result.

Description

Technical Field

[0001] The invention relates to the technical field of underwater positioning, and in particular to a landmark device capable of underwater positioning. Background Art

[0002] At present, the measurement of rock movement observation stations in subsidence waters in coal mining subsidence areas has always been a pain point in measurement. Many observation stations are submerged in water, making them difficult to find and measure, and finally the measurement has to be abandoned. Due to the lack of measurement data, the research results on the laws of surface subsidence are distorted. What's worse, completely different results are given, leading to major decision-making errors and irreparable economic losses.

[0003] At present, the observation of rock movement in the subsidence waters of coal mining subsidence areas is mainly carried out by setting up markers and then sinking them into the water. However, this method only places the marker in the water by its weight. Due to the continuous flow of water, the marker will follow the flow of water, which will cause the initial position of the marker to change, affecting the measurement results. Summary of the invention

[0004] The purpose of the present invention is to solve the problems existing in the prior art and to propose a landmark device that can be positioned underwater.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A landmark device capable of underwater positioning comprises:

[0007] A mounting seat, the upper end of which is fixedly connected to a benchmark body, and the upper end of which is fixedly connected to a signal transmitter;

[0008] The fixing mechanism comprises a first one-way bearing and a second one-way bearing, wherein a groove is formed at the lower end of the mounting seat, and the inner wall of the groove is slidably connected to a T-shaped plate, and the lower end of the T-shaped plate is fixedly connected to an insertion block, and the inner wall of the groove near the notch is fixedly connected to a limiting ring, and the first plate is slidably connected above the inner wall of the groove, and the lower end of the first plate is fixedly connected to two tooth plates, and the lower ends of the two tooth plates are fixedly connected to the upper end of the T-shaped plate. The inner walls of the groove located on both sides of the two tooth plates are rotatably connected to the first rod and the second rod respectively, the side wall of the first rod is fixedly connected to the side wall of the inner ring of the first one-way bearing, the side wall of the second rod is fixedly connected to the side wall of the inner ring of the second one-way bearing, the side wall of the outer ring of the first one-way bearing is fixedly connected to the first gear, and the side wall of the outer ring of the second one-way bearing is fixedly connected to the second gear, and the side walls of the first gear and the second gear are respectively meshed with the side walls of the two tooth plates.

[0009] Preferably, both ends of the first rod and the second rod are arranged outside the mounting seat, and both ends of the first rod and the second rod are fixedly connected with a C-shaped plate, the upper ends of the two C-shaped plates are provided with a sliding groove, the inner wall of the sliding groove is slidably connected with a slider, the upper ends of the two sliders are jointly rotated with a C-shaped rod, the inner wall of the sliding groove is slidably connected with a plurality of sliding rods, and the side wall of the sliding rod is slidably connected with the side wall of the slider.

[0010] Preferably, two arc-shaped plates are fixedly connected to the upper end of the mounting seat, and the side walls of the two arc-shaped plates are provided with through grooves. The side walls of the C-shaped rod are slidably connected to the inner walls of the through grooves, and the upper ends of the two arc-shaped plates are commonly fixedly connected to a circular plate. The upper end of the C-shaped rod is elastically connected to the lower end of the circular plate through a plurality of first springs, and the side walls of the C-shaped rod are threadedly connected to a threaded rod, and the side walls of the threaded rod are arranged to pass through the side walls of the circular plate.

[0011] Preferably, a stabilizing mechanism is provided in the insertion block, and the stabilizing mechanism includes a cavity opened in the insertion block, the inner walls on both sides of the cavity are elastically connected to the second plates through a plurality of second springs, the side walls of the second plates are fixedly connected to a plurality of fixing rods, the side walls of the fixing rods are slidably connected to the side walls of the insertion block, the top of the cavity is rotatably connected to two lead screws corresponding to the two second plates one by one, the side walls of the lead screws are threadedly connected to threaded plates, the side walls of the threaded plates are fitted with the inner walls of the cavity, and the lower end of the threaded plate is rotatably connected to the corresponding side walls of the second plate through a stabilizing plate.

[0012] Preferably, the lower end of the mounting seat is provided with two first circular grooves corresponding to the two lead screws, the tops of the two first circular grooves are rotatably connected to vertical rods, the upper end of the vertical rod is provided with a first clamping groove, the inner wall of the first clamping groove is fitted with a first rectangular rod, the upper ends of the two first rectangular rods are commonly fixedly connected to a third plate, the side walls of the threaded rod pass through the side walls of the third plate, and the side walls of the two first rectangular rods pass through the side walls of the circular plate.

[0013] Preferably, a second slot is formed at the lower end of the vertical rod, the upper end of the lead screw passes through the upper end of the insertion block and is fixedly connected to the second rectangular rod, and the inner wall of the second slot is slidably connected to the side wall of the second rectangular rod.

[0014] Preferably, a driving mechanism is provided in the groove, and the driving mechanism includes a second circular groove opened at the top of the groove, the inner wall of the second circular groove is rotatably connected to a threaded cylinder, the upper end of the first plate is fixedly connected to a rifle rod, the side wall of the rifle rod is threadedly connected to the inner wall of the threaded cylinder, and a torsion spring is fixedly connected between the top of the second circular groove and the upper end of the threaded cylinder.

[0015] Preferably, it also includes two third one-way bearings, the two vertical rod side walls are respectively fixedly connected to the two third one-way bearing inner ring side walls, the two third one-way bearing outer ring side walls are respectively fixedly connected to two second wheels, the threaded cylinder side wall is fixedly connected to two first wheels corresponding to the two second wheels one by one, and a synchronous belt is connected between the first wheel and the corresponding second wheel.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] 1. A fixing mechanism is provided to intermittently drive the two tooth plates to move downward, and then drive the insertion block to move downward into the soil in the water through the T-plate to fix the position of the marker body, thereby avoiding the phenomenon in the prior art that the marker is placed in the water only by its weight, so that the marker follows the flow of water, thereby causing the initial position of the marker to change and affecting the measurement results.

[0018] 2. Set the first rectangular rod, and the staff presses the third plate, and can apply pressure to the mounting seat through the two first rectangular rods to prevent the insertion block from moving downward. At this time, the mounting seat will be moved upward by the opposite force, causing the insertion block to be unable to be inserted into the soil.

[0019] 3. A lead screw, a fixing rod and a driving mechanism are arranged so that after the insertion block is fixed, the multiple fixing rods will slide out from the side wall of the insertion block and be inserted into the soil again, further increasing the stability of the insertion block into the soil. There is no need to set up too much electrical equipment, thereby reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic structural diagram of a landmark device capable of underwater positioning proposed by the present invention;

[0021] Figure 2 for Figure 1 A vertical cross-sectional structural schematic diagram of ;

[0022] Figure 3 for Figure 2 A schematic diagram of the structure of the middle mounting seat and the insertion block;

[0023] Figure 4 for Figure 3 A schematic diagram of the structure enlargement at the center A;

[0024] Figure 5 for Figure 1 Structural schematic diagram of the fixing mechanism, stabilizing mechanism and driving mechanism;

[0025] Figure 6 for Figure 1 A schematic diagram of a top cross-sectional structure of a fixing mechanism;

[0026] Figure 7For Figure 1 Schematic diagram of the front - view sectional structure of the driving mechanism in

[0027] Figure 8 For Figure 1 Schematic diagram of the structure after the separation of the threaded rod, the first rectangular rod and the circular plate in

[0028] In the figure: 1. Mounting base; 2. Benchmark body; 3. Signal transmitter; 4. Groove; 5. T - shaped plate; 6. Insert block; 7. Limit ring; 8. First plate; 9. Tooth plate; 10. First rod; 11. Second rod; 12. First one - way bearing; 13. Second one - way bearing; 14. First gear; 15. Second gear; 16. U - shaped plate; 17. Slide groove; 18. Slide block; 19. U - shaped rod; 20. Slide rod; 21. Arc - shaped plate; 22. Circular plate; 23. Through - slot; 24. First spring; 25. Threaded rod; 26. First circular groove; 27. Vertical rod; 28. First card slot; 29. First rectangular rod; 30. Third plate; 31. Cavity; 32. Second spring; 33. Second plate; 34. Fixed rod; 35. Lead screw; 36. Threaded plate; 37. Stabilizing plate; 38. Second circular groove; 39. Threaded cylinder; 40. Torsion spring; 41. Rifled rod; 42. Third one - way bearing; 43. First wheel; 44. Second wheel; 45. Second card slot; 46. Second rectangular rod. Specific embodiments

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

[0030] Referring to Figure 1-Figure 8 , a benchmark device that can be positioned underwater, including a mounting base 1, the upper end of the mounting base 1 is fixedly connected with a benchmark body 2, and the upper end of the benchmark body 2 is fixedly connected with a signal transmitter 3. When a measuring instrument passes through the water surface, the benchmark body 2 and the signal transmitter 3 can be captured accordingly, realizing the observation of the rock movement in the subsidence water area of the coal - mining subsidence area, which is the prior art.

[0031] Fixing mechanism, the fixing mechanism includes a first one - way bearing 12 and a second one - way bearing 13. A groove 4 is opened at the lower end of the mounting base 1. The inner wall of the groove 4 is slidably connected with a T - shaped plate 5. The lower end of the T - shaped plate 5 is fixedly connected with an insert block 6. The inner wall of the groove 4 near the notch is fixedly connected with a limit ring 7 (as Figure 3As shown), a first plate 8 is slidably connected to the upper part of the inner wall of the groove 4, and two tooth plates 9 are fixedly connected to the lower end of the first plate 8, and the lower ends of the two tooth plates 9 are fixedly connected to the upper end of the T-shaped plate 5. The inner walls of the groove 4 located on both sides of the two tooth plates 9 are rotatably connected to the first rod 10 and the second rod 11 respectively, the side wall of the first rod 10 is fixedly connected to the inner ring side wall of the first one-way bearing 12, the side wall of the second rod 11 is fixedly connected to the inner ring side wall of the second one-way bearing 13, the outer ring side wall of the first one-way bearing 12 is fixedly connected to the first gear 14, the outer ring side wall of the second one-way bearing 13 is fixedly connected to the second gear 15, and the side walls of the first gear 14 and the second gear 15 are respectively meshed with the side walls of the two tooth plates 9.

[0032] like Figure 3 As shown, when the first rod 10 rotates counterclockwise, the inner ring of the first one-way bearing 12 does not drive the outer ring thereof to rotate, and when the first rod 10 rotates clockwise, the inner ring of the first one-way bearing 12 drives the outer ring thereof to rotate;

[0033] When the second rod 11 rotates counterclockwise, the inner ring of the second one-way bearing 13 drives its outer ring to rotate, and when the second rod 11 rotates clockwise, the inner ring of the second one-way bearing 13 does not drive its outer ring to rotate, so that when the first rod 10 rotates clockwise and the second rod 11 rotates counterclockwise, the first one-way bearing 12 drives the first gear 14 to rotate clockwise, and the second one-way bearing 13 drives the second gear 15 to rotate counterclockwise, which can drive the two tooth plates 9 to move downward, and then drive the insertion block 6 to move downward into the soil in the water through the T-plate 5, so as to fix the position of the marker body 2, thereby avoiding the phenomenon that the marker follows the flow of water in the prior art, which causes the initial position of the marker to change and affects the measurement result.

[0034] Both ends of the first rod 10 and the second rod 11 are arranged outside the mounting seat 1, and both ends of the first rod 10 and the second rod 11 are fixedly connected with a C-shaped plate 16, and a slide groove 17 is opened on the upper ends of the two C-shaped plates 16, and a slider 18 is slidably connected to the inner wall of the slide groove 17. A C-shaped rod 19 is rotated together at the upper ends of the two sliders 18, and a plurality of slide rods 20 are slidably connected to the inner wall of the slide groove 17, and the side walls of the slide rods 20 are slidably connected to the side walls of the slider 18.

[0035] Two arc-shaped plates 21 are fixedly connected to the upper end of the mounting seat 1. The side walls of the two arc-shaped plates 21 are provided with through grooves 23. The side walls of the C-shaped rods 19 are slidably connected to the inner walls of the through grooves 23. The upper ends of the two arc-shaped plates 21 are fixedly connected to a circular plate 22. The upper end of the C-shaped rods 19 is elastically connected to the lower end of the circular plate 22 through a plurality of first springs 24. The side walls of the C-shaped rods 19 are threadedly connected to threaded rods 25. The side walls of the threaded rods 25 penetrate the side walls of the circular plate 22 (such as Figure 2 and Figure 8 shown).

[0036] In the present invention, since the device is placed in water, and the length of the threaded rod 25 is set to be relatively long (not shown in the figure), the staff can drive the C-shaped rod 19 to move up and down through the threaded rod 25. At this time, the C-shaped rod 19 drives the two C-shaped plates 16 to rotate upward and downward intermittently through the two sliders 18 and the two slide grooves 17, so that the first rod 10 and the second rod 11 can rotate clockwise and counterclockwise intermittently, so as to realize the intermittent downward movement of the insertion block 6 into the soil. There is no need to set up some electrical equipment to realize the movement of the insertion block 6, which reduces the production cost, and no electrical equipment is used in the water, which improves the operation safety.

[0037] The insert block 6 is provided with a stabilizing mechanism, which includes a cavity 31 formed in the insert block 6, and the inner walls on both sides of the cavity 31 are elastically connected to a second plate 33 (such as Figure 3 and Figure 5 As shown in the figure, a plurality of fixing rods 34 are fixedly connected to the side wall of the second plate 33, and the side wall of the fixing rod 34 is slidably connected to the side wall of the insertion block 6, and two lead screws 35 corresponding to the two second plates 33 are rotatably connected to the top of the cavity 31, and a threaded plate 36 is threadedly connected to the side wall of the lead screw 35, and the side wall of the threaded plate 36 is fitted with the inner wall of the cavity 31, and the lower end of the threaded plate 36 is rotatably connected to the corresponding side wall of the second plate 33 through a stabilizing plate 37.

[0038] like Figure 3 As shown, when the lead screw 35 rotates clockwise, the threaded plate 36 will be driven to move downward. At this time, the threaded plate 36 will drive the second plate 33 to move toward the inner wall of the cavity 31 through the stabilizing plate 37. At this time, multiple fixing rods 34 will slide out from the side wall of the insertion block 6 and insert into the soil, further increasing the stability of the insertion block 6 in the soil.

[0039] The lower end of the mounting seat 1 is provided with two first circular grooves 26 corresponding to the two lead screws 35. The tops of the two first circular grooves 26 are rotatably connected to the vertical rods 27. The upper end of the vertical rod 27 is provided with a first clamping groove 28. The inner wall of the first clamping groove 28 is attached to a first rectangular rod 29 (such as Figure 4 As shown), the upper ends of the two first rectangular rods 29 are fixedly connected to the third plate 30, the side wall of the threaded rod 25 penetrates the side wall of the third plate 30, and the side walls of the two first rectangular rods 29 penetrate the side wall of the circular plate 22 (as shown in FIG. Figure 8 shown).

[0040] Since the device is placed in water, the length of the two first rectangular rods 29 is set to be longer (not shown in the figure). Before the insertion block 6 moves downward, the two first rectangular rods 29 are passed through the side walls of the circular plate 22 and fit with the inner walls of the two first slots 28 respectively. Then, the threaded rod 25 is passed through the third plate 30 and the circular plate 22 and is threadedly connected with the side walls of the C-shaped rod 19. At this time, the staff presses the third plate 30, applies pressure to the mounting seat 1, and moves the threaded rod 25 up and down to prevent the insertion block 6 from moving downward. At this time, the mounting seat 1 will be moved upward by the opposite force, resulting in the insertion block 6 being unable to be inserted into the soil.

[0041] A second slot 45 is provided at the lower end of the vertical rod 27, the upper end of the lead screw 35 passes through the upper end of the insertion block 6 and is fixedly connected to a second rectangular rod 46, and the inner wall of the second slot 45 is slidably connected to the side wall of the second rectangular rod 46 (such as Figure 3 shown).

[0042] A driving mechanism is provided in the groove 4, and the driving mechanism includes a second circular groove 38 opened at the top of the groove 4, and the inner wall of the second circular groove 38 is rotatably connected to a threaded cylinder 39, a rifle rod 41 is fixedly connected to the upper end of the first plate 8, and the side wall of the rifle rod 41 is threadedly connected to the inner wall of the threaded cylinder 39, and a torsion spring 40 is fixedly connected between the top of the second circular groove 38 and the upper end of the threaded cylinder 39.

[0043] It also includes two third one-way bearings 42, the side walls of the two vertical rods 27 are fixedly connected to the inner ring side walls of the two third one-way bearings 42, the outer ring side walls of the two third one-way bearings 42 are fixedly connected to two second wheels 44, the side wall of the threaded cylinder 39 is fixedly connected to two first wheels 43 corresponding to the two second wheels 44, and a synchronous belt is connected between the first wheel 43 and the corresponding second wheel 44.

[0044] When the threaded barrel 39 rotates counterclockwise, the outer ring of the third one-way bearing 42 does not drive the inner ring thereof to rotate. When the threaded barrel 39 rotates clockwise, the outer ring of the third one-way bearing 42 drives the inner ring thereof to rotate.

[0045] When the first plate 8 moves downward, the rifle rod 41 drives the threaded cylinder 39 to rotate counterclockwise, and elastic potential energy is stored in the torsion spring 40. At this time, the outer ring of the third one-way bearing 42 does not drive the inner ring thereof to rotate. When the first plate 8 stops moving, the two first rectangular rods 29 are inserted into the two first slots 28, thereby limiting the rotation of the vertical rod 27. At this time, although there is a tendency for the torsion spring 40 to release elastic potential energy, it still cannot be released and can only continuously store elastic potential energy as the first plate 8 continues to move downward.

[0046] When the first plate 8 moves downward to separate the rifle rod 41 from the threaded tube 39, the lower surface of the T-plate 5 fits with the upper surface of the limit ring 7, indicating that the insertion block 6 is in place. The staff can disassemble the threaded rod 25 and the two first rectangular rods 29 in turn. The two first rectangular rods 29 are respectively moved out of the two first slots 28. The elastic potential energy of the torsion spring 40 is released to drive the threaded tube 39 to rotate clockwise, and then drive the two vertical rods 27 to rotate clockwise through the two first wheels 43, two synchronous belts, two second wheels 44 and two third one-way bearings 42. At this time, the two vertical rods 27 drive the two lead screws 35 to rotate clockwise through the two second rectangular rods 46, so that after the insertion block 6 is fixed, the multiple fixing rods 34 are inserted into the soil again, without the need to set up too much electrical equipment, thereby reducing production costs.

[0047] When observing rock movement in the subsidence waters of coal mining subsidence areas, the staff firstly passes the two first rectangular rods 29 through the side walls of the circular plate 22 and fits them with the inner walls of the two first slots 28, then passes the threaded rod 25 through the third plate 30 and the circular plate 22 in sequence and then threads them with the side walls of the U-shaped rod 19, and finally the staff can place the device at the corresponding observation point and sink it into the water;

[0048] Then the staff presses the third plate 30, so that the two first rectangular rods 29 apply pressure to the mounting seat 1 through the two vertical rods 27, and then the staff can move the threaded rod 25 up and down, driving the C-shaped rod 19 to move up and down. At this time, the C-shaped rod 19 drives the two C-shaped plates 16 to rotate upward and downward intermittently through the two sliders 18 and the two slide grooves 17, so that the first rod 10 and the second rod 11 can rotate clockwise and counterclockwise intermittently;

[0049] When the two T-shaped plates 16 rotate upward, the first rod 10 rotates clockwise and the second rod 11 rotates counterclockwise. The first one-way bearing 12 drives the first gear 14 to rotate clockwise, and the second one-way bearing 13 drives the second gear 15 to rotate counterclockwise. At this time, the two tooth plates 9 can be driven to move downward, and then the insertion block 6 can be driven to move downward into the mud in the water through the T-shaped plate 5.

[0050] When the two U-shaped plates 16 rotate downward, the first rod 10 rotates counterclockwise and the second rod 11 rotates clockwise. At this time, the first one-way bearing 12 does not drive the first gear 14 to rotate clockwise, and the second one-way bearing 13 does not drive the second gear 15 to rotate counterclockwise, so that the positions of the two toothed plates 9 remain unchanged. In this way, when the two U-shaped plates 16 rotate upward and downward intermittently, the T-shaped plate 5 intermittently drives the insertion block 6 to move down into the soil in the water to fix the position of the marker body 2, thereby avoiding the phenomenon in the prior art that the marker is placed in the water only by the weight of the marker, so that the marker will follow the flow of the water, thereby causing the initial position of the marker to change, affecting the measurement result;

[0051] When the first plate 8 moves downward, the rifle rod 41 drives the threaded cylinder 39 to rotate counterclockwise, and elastic potential energy is stored in the torsion spring 40. At this time, the outer ring of the third one-way bearing 42 does not drive the inner ring thereof to rotate. When the first plate 8 stops moving, the two first rectangular rods 29 are inserted into the two first slots 28, thereby limiting the rotation of the vertical rod 27. At this time, although there is a tendency for the torsion spring 40 to release elastic potential energy, it still cannot be released and can only continuously store elastic potential energy as the first plate 8 continues to move downward.

[0052] When the first plate 8 moves downward to separate the rifle rod 41 from the threaded barrel 39, the lower surface of the T-plate 5 fits with the upper surface of the limit ring 7, indicating that the insertion block 6 is inserted in place. At this time, the staff can disassemble the threaded rod 25 and the two first rectangular rods 29 in turn. At this time, the two first rectangular rods 29 are respectively moved out of the two first slots 28. At this time, the torsion spring 40 releases elastic potential energy, driving the threaded barrel 39 to rotate clockwise, and then through the two first wheels 43, the two synchronous belts, the two second wheels 44 and the two third one-way bearings. 42 drives the two vertical rods 27 to rotate clockwise, and at this time, the two vertical rods 27 drive the two lead screws 35 to rotate clockwise through the two second rectangular rods 46, driving the threaded plate 36 to move downward, and the threaded plate 36 will drive the second plate 33 to move toward the inner wall of the cavity 31 through the stabilizing plate 37, so that after the insertion block 6 is fixed, the multiple fixing rods 34 will slide out from the side wall of the insertion block 6 and be inserted into the soil again, further increasing the stability of the insertion block 6 in the soil, without setting up too many electrical equipment, and reducing production costs;

[0053] When a measuring instrument passes by the water surface later, the marker body 2 and the signal transmitter 3 can be captured accordingly, so as to realize the observation of rock movement in the subsidence water area of ​​the coal mining subsidence area.

[0054] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A landmark device capable of underwater positioning, characterized in that: Including: A mounting base (1), the upper end of the mounting base (1) is fixedly connected to a monument body (2), and the upper end of the monument body (2) is fixedly connected to a signal transmitter (3); A fixing mechanism, the fixing mechanism includes a first one-way bearing (12) and a second one-way bearing (13), a groove (4) is opened at the lower end of the mounting base (1), a T-shaped plate (5) is slidably connected to the inner wall of the groove (4), the lower end of the T-shaped plate (5) is fixedly connected to an insertion block (6), a limiting ring (7) is fixedly connected to the inner wall of the groove (4) near the notch, a first plate (8) is slidably connected to the upper part of the inner wall of the groove (4), two toothed plates (9) are fixedly connected to the lower end of the first plate (8), the lower ends of the two toothed plates (9) are fixedly connected to the upper end of the T-shaped plate (5), a first rod (10) and a second rod (11) are respectively rotatably connected to the inner walls of the groove (4) on both sides of the two toothed plates (9), the side wall of the first rod (10) is fixedly connected to the inner ring side wall of the first one-way bearing (12), the side wall of the second rod (11) is fixedly connected to the inner ring side wall of the second one-way bearing (13), the outer ring side wall of the first one-way bearing (12) is fixedly connected to a first gear (14), the outer ring side wall of the second one-way bearing (13) is fixedly connected to a second gear (15), and the side walls of the first gear (14) and the second gear (15) are respectively meshed with the side walls of the two toothed plates (9); Both ends of the first rod (10) and the second rod (11) are arranged outside the mounting base (1), and U-shaped plates (16) are fixedly connected to both ends of the first rod (10) and the second rod (11), chutes (17) are opened at the upper ends of the two U-shaped plates (16), sliders (18) are slidably connected to the inner walls of the chutes (17), a U-shaped rod (19) is rotatably connected to the upper ends of the two sliders (18) together, a plurality of sliding rods (20) are slidably connected to the inner walls of the chutes (17), and the side walls of the sliding rods (20) are slidably connected to the side walls of the sliders (18); Two arc-shaped plates (21) are fixedly connected to the upper end of the mounting base (1), through grooves (23) are opened on the side walls of the two arc-shaped plates (21), the side wall of the U-shaped rod (19) is slidably connected to the inner wall of the through groove (23), a circular plate (22) is fixedly connected to the upper ends of the two arc-shaped plates (21) together, the upper end of the U-shaped rod (19) is elastically connected to the lower end of the circular plate (22) through a plurality of first springs (24), and a threaded rod (25) is threadedly connected to the side wall of the U-shaped rod (19), and the side wall of the threaded rod (25) penetrates through the side wall of the circular plate (22).

2. The underwater positioning landmark device according to claim 1, characterized in that: The insert block (6) is provided with a stabilizing mechanism, the stabilizing mechanism comprising a cavity (31) provided in the insert block (6), the inner walls on both sides of the cavity (31) being elastically connected to second plates (33) via a plurality of second springs (32), the side walls of the second plates (33) being fixedly connected to a plurality of fixing rods (34), the side walls of the fixing rods (34) being slidably connected to the side walls of the insert block (6), the top of the cavity (31) being rotatably connected to two lead screws (35) corresponding to the two second plates (33), the side walls of the lead screws (35) being threadedly connected to a threaded plate (36), the side walls of the threaded plate (36) being in contact with the inner wall of the cavity (31), and the lower end of the threaded plate (36) being rotatably connected to the side wall of the corresponding second plate (33) via a stabilizing plate (37).

3. The underwater positioning landmark device according to claim 2, characterized in that: The lower end of the mounting seat (1) is provided with two first circular grooves (26) corresponding to the two lead screws (35) in a one-to-one manner, the tops of the two first circular grooves (26) are rotatably connected to a vertical rod (27), the upper end of the vertical rod (27) is provided with a first clamping groove (28), the inner wall of the first clamping groove (28) is fitted with a first rectangular rod (29), the upper ends of the two first rectangular rods (29) are commonly fixedly connected to a third plate (30), the side wall of the threaded rod (25) penetrates the side wall of the third plate (30), and the side walls of the two first rectangular rods (29) penetrate the side wall of the circular plate (22).

4. The underwater positioning landmark device according to claim 3, characterized in that: A second slot (45) is formed at the lower end of the vertical rod (27); the upper end of the lead screw (35) passes through the upper end of the insertion block (6) and is fixedly connected to a second rectangular rod (46); the inner wall of the second slot (45) is slidably connected to the side wall of the second rectangular rod (46).

5. The underwater positioning landmark device according to claim 4, characterized in that: A driving mechanism is provided in the groove (4), and the driving mechanism comprises a second circular groove (38) opened at the top of the groove (4); the inner wall of the second circular groove (38) is rotatably connected to a threaded cylinder (39); the upper end of the first plate (8) is fixedly connected to a rifle rod (41); the side wall of the rifle rod (41) is threadedly connected to the inner wall of the threaded cylinder (39); and a torsion spring (40) is fixedly connected between the top of the second circular groove (38) and the upper end of the threaded cylinder (39).

6. The underwater positioning landmark device according to claim 5, characterized in that: It also includes two third one-way bearings (42), the side walls of the two vertical rods (27) are respectively fixedly connected to the inner ring side walls of the two third one-way bearings (42), the outer ring side walls of the two third one-way bearings (42) are respectively fixedly connected to two second wheels (44), the side wall of the threaded cylinder (39) is fixedly connected to two first wheels (43) corresponding to the two second wheels (44), and a synchronous belt is connected between the first wheel (43) and the corresponding second wheel (44).

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