Measuring device for underwater topography in shallow water area

Abstract

The invention discloses a shallow water area underwater terrain measuring device which comprises a telescopic supporting rod structure with the adjustable length, a floating table structure capable of floating on the water surface, a measuring pyramid and a digital display control panel. One end of the telescopic supporting rod structure is provided with a first lifting rope assembly which is used for being connected with the floating table structure and can achieve lifting of the floating table structure. The telescopic supporting rod structure is detachably provided with a moving wheel structure used for supporting and moving the telescopic supporting rod structure, and the telescopic supporting rod structure is provided with a supporting frame structure used for positioning and supporting the telescopic supporting rod structure. Through cooperation and cooperation among the telescopic supporting rod structure, the floating table structure, the first lifting rope assembly, the measuring pyramid, the second lifting rope assembly and the like, adjustment of the detection position on the water surface and automatic vertical measurement of the water area depth of a detection point can be rapidly achieved, the measuring efficiency is improved, and the measuring precision is also improved.

Description

Technical Field

[0001] The invention relates to the technical field of water area measurement, and in particular to a device for measuring underwater topography in a shallow water area. Background Art

[0002] Currently, in deep-water areas, surveyors use RTK to measure the underwater elevation by boat. In shallow river areas, where boats are not available, surveyors wear boots and use handheld RTK to measure. However, in shallow water areas, the bottom of the water is silty and the terrain is complex, so there are great safety risks when personnel go into the water to work.

[0003] A device for measuring underwater topography in shallow water areas with publication number CN221764494U has a measuring rod hole in the center of the top plate of the measuring tripod, a top plate fixing clamp is welded to the lower plate surface of the top plate, a shore-based measuring rod is vertically inserted into the measuring rod hole, the top plate fixing clamp is clamped and connected to the shore-based measuring rod, and the measuring rod is placed vertically in the water.

[0004] However, currently when measuring water areas, the depth is determined by extending and retracting the rod, which is inconvenient for controlling the base point, and the position of the measuring point on the water surface is also inconvenient to change and adjust. Summary of the invention

[0005] The purpose of the present invention is to provide a device for measuring underwater topography in shallow water areas in order to solve the above-mentioned problems.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] The present invention provides a shallow water area underwater topography measuring device, comprising a telescopic support rod structure with adjustable length, a floating platform structure capable of floating on the water surface, a measuring pyramid and a digital display control panel, wherein one end of the telescopic support rod structure is provided with a first lifting rope assembly for connecting with the floating platform structure and enabling the floating platform structure to be lifted and lowered;

[0008] The telescopic support rod structure is detachably provided with a moving wheel structure for supporting and moving the telescopic support rod structure, the telescopic support rod structure is provided with a support frame structure for positioning and supporting the telescopic support rod structure, and the telescopic support rod structure is provided with a weight balance assembly capable of changing the center of gravity position at one end thereof close to the first lifting rope assembly;

[0009] The floating platform structure is provided with a first lifting rope assembly capable of lifting and lowering the measuring pyramid, and the floating platform structure is provided with a positioning clamping structure capable of clamping and fixing the measuring pyramid.

[0010] Furthermore, the telescopic support rod structure includes a main support rod, a sliding channel is opened in the main support rod, one end of the sliding channel is open and a suspension rod is slidably arranged at the opening, a first electric telescopic rod for driving the suspension rod to slide and move in the sliding channel is fixedly arranged in the sliding channel, a first wheel frame with a U-shaped outer profile is fixedly arranged at one end of the suspension rod passing through the main support rod, a rope support wheel is rotatably arranged on the first wheel frame, and the output end of the digital display control panel is electrically connected to the input end of the first electric telescopic rod.

[0011] Furthermore, the second lifting rope assembly includes a second lifting shell fixedly arranged on the main support pole, a second rope reel is rotatably arranged in the second lifting shell, a second lifting rope is wound around the second rope reel, a second motor is arranged on the second rope reel for driving it to rotate in the second lifting shell, a second rope threading hole for passing the second lifting rope is provided on one side of the second lifting shell, an annular groove is provided on the outer side of the rope support wheel along its circumferential direction, one end of the second lifting rope passes through the second rope threading hole and around the annular groove in sequence and is connected to more than four hanging ropes, the lower end of the hanging rope is fixedly connected to the floating platform structure, and the output end of the digital display control panel is electrically connected to the input end of the second motor.

[0012] Furthermore, the main support pole is provided with a first rope threading ring for passing the second lifting rope, and the lifting pole is provided with a second rope threading ring for passing the second lifting rope, the outer contours of the first rope threading ring and the second rope threading ring are both ring-shaped and have a circular cross-sectional shape, the end of the second lifting rope is fixedly connected with a first hanging joint, the upper ends of the hanging ropes are fixedly connected with second hanging joints, and the first hanging joint and the second hanging joint are threadedly connected to each other.

[0013] Furthermore, the floating platform structure includes a floating platform, an annular airbag is arranged on the outside of the floating platform, the outside of the floating platform and the inside of the annular airbag are connected to each other by more than six connecting ropes, the outer shape of the floating platform is a truncated cone shape, an open groove is opened at the center of the floating platform, and the first lifting rope assembly and the positioning clamping structure are respectively arranged in the open groove.

[0014] Further, the first lifting rope assembly includes two support plates distributed in parallel, the support plates are fixedly arranged on the floating platform, and a first lifting shell is fixedly arranged between the two support plates. A first rope reel is rotatably arranged in the first lifting shell, and a first lifting rope is wound around the first rope reel. A first motor for driving the first rope reel to rotate in the first lifting shell is arranged on the first rope reel, and a first rope threading hole for passing the first lifting rope is opened on the bottom side of the first lifting shell, and one end of the first lifting rope passes through the first rope threading hole and is fixedly connected to the measuring pyramid. A torque sensor is arranged between one of the ends of the rotation axis of the first rope reel and the inner side of the first lifting shell, and a floating disk is arranged on the first lifting rope between the first lifting shell and the measuring pyramid, and a through hole for sliding the first lifting rope is opened on the floating disk. More than two distance sensors for detecting the distance from the floating disk are arranged on the bottom side of the first lifting shell, and the output ends of the torque sensor and the distance sensor are respectively electrically connected to the input end of the digital display control panel, and the output end of the digital display control panel is electrically connected to the input end of the first motor.

[0015] Furthermore, the positioning and clamping structure includes an embedding groove opened on the inner side wall of the opening groove, a second electric telescopic rod is fixedly arranged in the embedding groove, a push rod head end of the second electric telescopic rod faces the opening groove and is fixedly connected to a clamping plate, an outer contour of the clamping plate is consistent with an outer contour of the measuring pyramid, and an output end of the digital display control panel is electrically connected to an input end of the second electric telescopic rod.

[0016] Furthermore, the ballast balancing assembly includes a slide cylinder slidably arranged on the main support rod, a containing rack with a U-shaped outer profile is fixedly arranged on one side of the slide cylinder, a plurality of ballast blocks are detachably arranged in the containing rack, and more than two hanging rods are fixedly arranged in the containing rack, each of the ballast blocks is penetrated by a hanging hole for sliding through the hanging rod, and a third electric telescopic rod for driving the slide cylinder to slide on the main support rod is fixedly arranged on the main support rod, a push rod head end of the third electric telescopic rod is fixedly connected to the containing rack, and an output end of the digital display control panel is electrically connected to an input end of the third electric telescopic rod.

[0017] Furthermore, the support frame structure includes a connecting member, one side of the connecting member is hinged to the main support pole through a hinge seat, and the other side of the connecting member is hinged to one end of two supporting legs through two hinged swivels, each supporting leg is fixed with a nail foot at the other end, a connecting belt is provided between the two supporting legs, and two binding straps are provided on the connecting belt for binding the supporting legs to the main support pole.

[0018] Furthermore, the movable wheel structure comprises a fixing seat fixedly arranged on the main support rod, a second wheel frame with a U-shaped outer contour is fixedly arranged on the fixing seat by bolts, and a wheel body is rotatably arranged on the second wheel frame.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. Through the coordination and cooperation between the telescopic support rod structure, the floating platform structure, the first lifting rope assembly, the measuring pyramid and the second lifting rope assembly, the adjustment of the detection position on the water surface and the automatic vertical measurement of the water depth of the detection point can be quickly realized, which not only improves the measurement efficiency but also improves the measurement accuracy;

[0021] 2. The second lifting rope assembly cooperates with the telescopic support rod structure to enable the staff to drive and move the floating platform structure on the shore, as well as switch between the two detection modes of floating detection and suspended detection on the water surface;

[0022] 3. The second electric telescopic rod can drive the clamping plate to clamp and fix the measuring pyramid, so as to keep the measuring pyramid in a stable state and avoid the problem of random shaking of the measuring pyramid during movement;

[0023] 4. The weight balancing assembly can balance the weight of the floating platform structure, thereby making the operation of the telescopic support rod structure more labor-saving and convenient when supported by the support frame structure;

[0024] 5. The telescopic support rod structure can be easily moved on the riverside road through the moving wheel structure thereon. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0026] Figure 2 The present invention Figure 1 A schematic diagram of a three-dimensional structure in a first direction;

[0027] Figure 3 The present invention Figure 1 A schematic diagram of the local enlarged structure at B;

[0028] Figure 4 It is a three-dimensional structural schematic diagram of the support frame structure of the present invention;

[0029] Figure 5 The present invention Figure 1 A schematic diagram of the local enlarged structure at C;

[0030] Figure 6 The present invention Figure 2 A schematic diagram of the local enlarged structure at D;

[0031] Figure 7 The present invention Figure 1 AA cross-sectional structural diagram;

[0032] Figure 8 The present invention Figure 1 A schematic diagram of the structure in the second direction;

[0033] Fig. 9 The present invention Figure 8 Schematic diagram of the local enlarged structure at E.

[0034] The accompanying drawings are marked as follows: 1. telescopic support rod structure; 101. main support rod; 102. suspension rod; 103. first rope threading ring; 104. first wheel frame; 105. rope support wheel; 106. first electric telescopic rod; 107. second rope threading ring; 2. floating platform structure; 201. floating platform; 202. connecting rope; 203. annular airbag; 204. opening groove; 3. first lifting rope assembly; 301. support plate; 302. first lifting shell; 303. first motor; 304. first rope retracting and releasing drum; 305. floating plate; 306. torque sensor; 307. distance sensor; 308. first rope threading hole; 309. first lifting rope; 310. through hole; 4. measuring pyramid; 5. positioning clamping structure; 501. embedded groove; 502. second Electric telescopic rod; 503, clamping plate; 6, second lifting rope assembly; 601, second lifting shell; 602, second lifting rope; 603, first hanging joint; 604, second hanging joint; 605, hanging rope; 606, second rope reel; 607, second motor; 7, ballast balance assembly; 701, slide; 702, storage rack; 703, ballast block; 704, hanging rod; 705, third electric telescopic rod; 8, support frame structure; 801, hinged seat; 802, connecting piece; 803, hinged swivel; 804, supporting foot; 805, connecting belt; 806, nail foot; 807, binding belt; 9, moving wheel structure; 901, second wheel frame; 902, fixed seat; 903, wheel body; 10, digital display control panel; 11, handle. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical scheme and advantages of the present invention clearer, the technical scheme of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] See also Figure 1-Figure 9As shown, the present invention provides a device for measuring underwater topography in shallow water areas, comprising a telescopic strut structure 1 with adjustable length, a floating platform structure 2 capable of floating on the water surface, a measuring pyramid 4 and a digital display control panel 10, wherein one end of the telescopic strut structure 1 is provided with a first lifting rope assembly 3 for connecting with the floating platform structure 2 and capable of lifting and lowering the floating platform structure 2; a moving wheel structure 9 for supporting and moving the telescopic strut structure 1 is detachably provided, a supporting frame structure 8 for positioning and supporting the telescopic strut structure 1 is provided, and a weight balancing assembly 7 capable of changing the center of gravity is provided at one end of the telescopic strut structure 1 close to the first lifting rope assembly 3; a first lifting rope assembly 3 capable of lifting and lowering the measuring pyramid 4 is provided on the floating platform structure 2, and a positioning clamping structure 5 capable of clamping and fixing the measuring pyramid 4 is provided on the floating platform structure 2.

[0037] See the instruction manual Figure 2 , Figure 3 and Figure 8 As shown, the telescopic support rod structure 1 includes a main support rod 101 with a round rod shape, a sliding channel is provided in the main support rod 101, one end of the sliding channel is open and a suspension rod 102 is slidably arranged at the opening, a first electric telescopic rod 106 for driving the suspension rod 102 to slide and move in the sliding channel is fixedly arranged in the sliding channel, a first wheel frame 104 with a U-shaped outline is fixedly arranged at one end of the suspension rod 102 passing through the main support rod 101, a rope support wheel 105 is rotatably arranged on the first wheel frame 104, and the output end of the digital display control panel 10 is electrically connected to the input end of the first electric telescopic rod 106. Through the above-mentioned specific structural design, the extension and retraction of the push rod of the first electric telescopic rod 106 can drive the suspension rod 102 to slide and move in the sliding channel, and the rope support wheel 105 pushes the second lifting rope 602 to move the floating platform structure 2 in the horizontal direction, thereby changing the measurement point on the water surface.

[0038] See the instruction manual Figure 2 , Figure 3 and Figure 7As shown, the second lifting rope assembly 6 includes a second lifting shell 601 fixedly arranged on the main support rod 101, and a handle 11 is arranged on the second lifting shell 601 for hand-held operation by the staff. A second rope reel 606 is rotatably arranged in the second lifting shell 601, and a second lifting rope 602 is wound around the second rope reel 606. In actual application, a second rope reel groove is provided on the outer side of the second rope reel 606 along its circumferential direction, and a second motor 607 for driving it to rotate in the second lifting shell 601 is arranged on the second rope reel 606. In actual application, the second motor 607 is fixedly arranged at the central axis of the second rope reel 606, and one of the central axis ends of the second rope reel 606 is connected to the The inner sides of the second lifting shell 601 are rotatably connected to each other, and the second motor 607 passes through the other central axis end of the second rope reel 606 and is fixedly connected to the inner side of the second lifting shell 601. A second rope threading hole for passing the second lifting rope 602 is provided on one side of the second lifting shell 601, and an annular groove is provided on the outer side of the rope support wheel 105 along its circumferential direction. The annular groove serves as a directional support and limit for the second lifting rope 602. One end of the second lifting rope 602 passes through the second rope threading hole and bypasses the annular groove in turn and is connected to more than four hanging ropes 605. The lower end of the hanging rope 605 is fixedly connected to the floating platform structure 2, and the output end of the digital display control panel 10 is electrically connected to the input end of the second motor 607. Through the above-mentioned specific structural design, the second lifting rope assembly 6 can play a role in stabilizing the lifting of the floating platform structure 2, so that during the lifting and suspension process of the floating platform structure 2, the floating platform structure 2 remains vertically downward under the action of its own gravity, thereby realizing vertical detection of the water depth. In addition, the second lifting rope assembly 6 cooperates with the telescopic strut structure 1 to realize the driven movement of the position of the floating platform structure 2 by the staff on the shore, as well as the conversion of the two detection modes of floating detection and suspension detection on the water surface.

[0039] A first rope threading ring 103 for passing the second lifting rope 602 is provided on the main support pole 101, and a second rope threading ring 107 for passing the second lifting rope 602 is provided on the lifting pole 102. The outer contours of the first rope threading ring 103 and the second rope threading ring 107 are both ring-shaped and have a circular cross-sectional shape. The end of the second lifting rope 602 is fixedly connected with a first hanging joint 603, and the upper ends of the hanging ropes 605 are fixedly connected with second hanging joints 604, and the first hanging joint 603 and the second hanging joint 604 are threadedly connected to each other.

[0040] See the instruction manual Figure 2 , Figure 7 and Figure 8As shown, the floating platform structure 2 includes a floating platform 201, an annular airbag 203 is arranged on the outer side of the floating platform 201, the outer side of the floating platform 201 and the inner side of the annular airbag 203 are connected to each other by more than six connecting ropes 202, the outer shape of the floating platform 201 is a truncated cone shape, and an open groove 204 is opened at the center of the floating platform 201, and the first lifting rope assembly 3 and the positioning clamping structure 5 are respectively arranged in the open groove 204.

[0041] See the instruction manual Figure 1 , Figure 5 , Figure 7 , Figure 8 and Fig. 9As shown, the first lifting rope assembly 3 includes two parallel distributed support plates 301, the support plates 301 are fixedly arranged on the floating platform 201, and a first lifting shell 302 is fixedly arranged between the two support plates 301, a first rope drum 304 is rotatably arranged in the first lifting shell 302, a first lifting rope 309 is wound around the first rope drum 304, and a first motor 303 for driving it to rotate in the first lifting shell 302 is arranged on the first rope drum 304. In actual application, the first motor 303 is fixedly arranged at the central axis of the first rope drum 304, one of the central axis ends of the first rope drum 304 is rotatably connected to the inner side of the first lifting shell 302, and a torque sensor 306 is arranged at the connection between them, and the first motor 303 is driven from the other central axis of the first rope drum 304. The first end of the first lifting shell 302 passes through and is fixedly connected to the inner side of the first lifting shell 302. The bottom side of the first lifting shell 302 is provided with a first rope threading hole 308 for passing the first lifting rope 309. One end of the first lifting rope 309 passes through the first rope threading hole 308 and is fixedly connected to the measuring pyramid 4. A floating plate 305 is provided on the first lifting rope 309 located between the first lifting shell 302 and the measuring pyramid 4. A through hole 310 is penetrated on the floating plate 305 for sliding the first lifting rope 309. More than two distance sensors 307 for detecting the distance from the floating plate 305 are provided on the bottom side of the first lifting shell 302. The output ends of the torque sensor 306 and the distance sensor 307 are respectively electrically connected to the input end of the digital display control panel 10, and the output end of the digital display control panel 10 is electrically connected to the input end of the first motor 303. In practical applications, the first lifting rope assembly 3 cooperates with the measuring pyramid 4 to detect the water depth, and the torque sensor 306 and the distance sensor 307 cooperate to realize automatic detection of the water depth. Specifically, the first motor 303 drives the first retractable rope drum 304 to rotate to retract the first lifting rope 309. In the process of retracting and releasing the first lifting rope 309, the torque sensor 306 is at a larger value due to the influence of the weight of the measuring pyramid 4 in the suspended state. When the measuring pyramid 4 touches the bottom, the first lifting rope 309 loosens, resulting in a smaller detection value of the torque sensor 306. At this time, the torque sensor 306 transmits the detected electrical signal to the digital display control panel 10, and the digital display control panel 10 controls the first motor 303 to stop rotating. At this time, the distance sensor 307 detects the distance of the floating plate 305 floating on the water surface. When the floating plate 305 falls on the water surface, the distance sensor 307 sets the distance detected at this time as the initial value, and calculates the number of retracted and released circles of the first retracted and released rope drum 304 by the first motor 303 after this time point until the measuring pyramid 4 touches the bottom, and obtains the descending distance of the measuring pyramid 4, thereby judging the water depth distance.

[0042] The positioning and clamping structure 5 includes an embedding groove 501 provided on the inner side wall of the opening groove 204, a second electric telescopic rod 502 is fixedly arranged in the embedding groove 501, a push rod head end of the second electric telescopic rod 502 faces the opening groove 204 and is fixedly connected with a clamping plate 503, the outer contour of the clamping plate 503 is consistent with the outer contour of the measuring pyramid 4, and the output end of the digital display control panel 10 is electrically connected to the input end of the second electric telescopic rod 502. In order to avoid the problem that the measuring pyramid 4 is always in a suspended state, resulting in the problem that the measuring pyramid 4 shakes randomly during the movement, the second electric telescopic rod 502 can drive the clamping plate 503 to clamp and fix the measuring pyramid 4, thereby keeping the measuring pyramid 4 in a stable state.

[0043] See the instruction manual Figure 2 and Figure 6 As shown, the ballast balance assembly 7 includes a slide 701 slidably set on the main support rod 101, and a U-shaped containing rack 702 is fixedly set on one side of the slide 701. A plurality of ballast blocks 703 are detachably set in the containing rack 702, and more than two hanging rods 704 are fixedly set in the containing rack 702. Each ballast block 703 is penetrated by a hanging hole for sliding through the hanging rod 704. A third electric telescopic rod 705 for driving the slide 701 to slide on the main support rod 101 is fixedly set on the main support rod 101, and the push rod head end of the third electric telescopic rod 705 is fixedly connected to the containing rack 702, and the output end of the digital display control panel 10 is electrically connected to the input end of the third electric telescopic rod 705.

[0044] The support frame structure 8 includes a connecting member 802, one side of which is hinged to the main support pole 101 through a hinge seat 801, and the other side of the connecting member 802 is hinged to one end of two supporting legs 804 through two hinged swivels 803, each supporting leg 804 is fixed with a nail foot 806 at the other end, a connecting belt 805 is provided between the two supporting legs 804, and two binding straps 807 for binding the supporting legs 804 to the main support pole 101 are provided on the connecting belt 805.

[0045] The moving wheel structure 9 includes a fixing seat 902 fixedly arranged on the main support rod 101 , on which a second wheel frame 901 with a U-shaped profile is fixedly arranged by bolts, and on which a wheel body 903 is rotatably arranged.

[0046] When in use, the telescopic support rod structure 1 is moved on the riverside road by the moving wheel structure 9 thereon. When it reaches the position to be detected, it stops moving, unties the binding belt 807, and separates the support leg 804 from the main support rod 101 by hinged rotation through the hinge seat 801. Then, the two support legs 804 are separated by the hinged rotating head 803 until the connecting belt 805 is in a straight state. Then, the nail foot 806 is inserted into the ground for fixing. The floating platform structure 2 is hung on the second hanging joint 603 through the threaded connection of the second hanging joint 604. On the lifting rope 602, at this time, the push rod of the first electric telescopic rod 106 is extended, thereby driving the lifting rod 102 to extend outward, and the floating platform structure 2 is lifted above the water surface. In order to balance the weight of the floating platform structure 2 and make the operation of the telescopic support rod structure 1 more labor-saving, the third electric telescopic rod 705 of the ballast balance assembly 7 drives the ballast block 703 to move axially along the main support rod 101, and the moving direction is toward the side away from the floating platform structure 2. When the floating platform structure 2 moves to the monitoring point, the second lifting rope assembly 6 lowers the floating platform structure 2 to the water surface. When the measuring cone 4 floats and the water surface is calm, the measuring cone 4 can be directly dropped by the first lifting rope assembly 3 for detection. Specifically, the first motor 303 drives the first rope reel 304 to rotate. In the process of releasing the first lifting rope 309, the torque sensor 306 is at a larger value due to the weight of the measuring cone 4. When the measuring cone 4 touches the bottom, the first lifting rope 309 loosens, causing the torque sensor 306 to detect a smaller value. At this time, the torque sensor 306 transmits the detected electrical signal to the digital display control panel 10, which is controlled by the digital display. The panel 10 controls the first motor 303 to stop rotating. At this time, the distance sensor 307 detects the distance of the floating plate 305 floating on the water surface. When the floating plate 305 falls on the water surface, the distance detected by the distance sensor 307 is a certain value. The number of retracted and released circles of the first retracted and released rope drum 304 by the first motor 303 after this time point until the measuring pyramid 4 touches the bottom is calculated to obtain the descending distance of the measuring pyramid 4, thereby judging the water depth distance. Then, the floating platform structure 2 is driven by the telescopic support rod structure 1 to move to the next measuring point on the water surface.

[0047] When the water surface is not calm, the measurement may be inaccurate due to the fluctuation of waves. The second lifting rope assembly 6 can be used to lift the floating platform structure 2 so that the floating platform structure 2 is separated from the water surface by a certain distance, and then the above-mentioned depth measurement method can be used for measurement.

Claims

1. A device for measuring underwater topography in shallow water areas, characterized in that: The invention comprises a telescopic support rod structure (1) with adjustable length, a floating platform structure (2) capable of floating on the water surface, a measuring pyramid (4) and a digital display control panel (10); one end of the telescopic support rod structure (1) is provided with a second lifting rope assembly (6) for connecting with the floating platform structure (2) and enabling the floating platform structure (2) to be lifted and lowered; The telescopic support rod structure (1) is detachably provided with a moving wheel structure (9) for supporting its movement, the telescopic support rod structure (1) is provided with a support frame structure (8) for positioning and supporting it, and the telescopic support rod structure (1) is provided with a weight balance assembly (7) capable of changing the center of gravity position at one end close to the first lifting rope assembly (3); The floating platform structure (2) is provided with a first lifting rope assembly (3) capable of lifting and lowering the measuring pyramid (4), and the floating platform structure (2) is provided with a positioning clamping structure (5) capable of clamping and fixing the measuring pyramid (4).

2. The device for measuring underwater topography in shallow water areas according to claim 1, characterized in that: The telescopic support rod structure (1) comprises a main support rod (101), a sliding channel is provided in the main support rod (101), one end of the sliding channel is open and a suspension rod (102) is slidably arranged at the opening, a first electric telescopic rod (106) for driving the suspension rod (102) to slide and move in the sliding channel is fixedly arranged in the sliding channel, a first wheel frame (104) with a U-shaped profile is fixedly arranged at one end of the suspension rod (102) passing through the main support rod (101), a rope support wheel (105) is rotatably arranged on the first wheel frame (104), and an output end of the digital display control panel (10) is electrically connected to an input end of the first electric telescopic rod (106).

3. The device for measuring underwater topography in shallow water areas according to claim 2, characterized in that: The second lifting rope assembly (6) includes a second lifting shell (601) fixedly arranged on the main support pole (101), a second rope reel (606) rotatably arranged in the second lifting shell (601), a second lifting rope (602) wound around the second rope reel (606), a second motor (607) for driving the second rope reel (606) to rotate in the second lifting shell (601), a second rope threading hole for passing the second lifting rope (602) is provided on one side of the second lifting shell (601), an annular groove is provided on the outer side of the rope support wheel (105) along its circumferential direction, one end of the second lifting rope (602) passes through the second rope threading hole and bypasses the annular groove and is connected to more than four hanging ropes (605), the lower end of the hanging rope (605) is fixedly connected to the floating platform structure (2), and the output end of the digital display control panel (10) is electrically connected to the input end of the second motor (607).

4. The device for measuring underwater topography in shallow water areas according to claim 3, characterized in that: The main support pole (101) is provided with a first rope threading ring (103) for passing the second lifting rope (602), and the lifting pole (102) is provided with a second rope threading ring (107) for passing the second lifting rope (602). The first rope threading ring (103) and the second rope threading ring (107) are both annular in shape and circular in cross-section. The end of the second lifting rope (602) is fixedly connected with a first hanging joint (603), and the upper ends of the hanging ropes (605) are fixedly connected with a second hanging joint (604), and the first hanging joint (603) and the second hanging joint (604) are threadedly connected to each other.

5. The device for measuring underwater topography in shallow water areas according to claim 1, characterized in that: The floating platform structure (2) includes a floating platform (201), an annular airbag (203) is arranged on the outer side of the floating platform (201), the outer side of the floating platform (201) and the inner side of the annular airbag (203) are connected to each other through more than six connecting ropes (202), the outer shape of the floating platform (201) is a truncated cone shape, an open groove (204) is opened at the center of the floating platform (201), and the first lifting rope assembly (3) and the positioning clamping structure (5) are respectively arranged in the open groove (204).

6. The device for measuring underwater topography in shallow water areas according to claim 5, characterized in that: The first lifting rope assembly (3) comprises two support plates (301) arranged in parallel, wherein the support plates (301) are fixedly arranged on the floating platform (201), and a first lifting shell (302) is fixedly arranged between the two support plates (301), and a first rope reel (304) is rotatably arranged in the first lifting shell (302), and a first lifting rope (309) is wound around the first rope reel (304), and a first motor (303) is arranged on the first rope reel (304) for driving the first lifting rope to rotate in the first lifting shell (302), and a first rope threading hole (308) for passing the first lifting rope (309) is provided on the bottom side of the first lifting shell (302), and one end of the first lifting rope (309) passes through the first rope threading hole (308) and is fixedly connected to the measuring pyramid (4). A torque sensor (306) is arranged between one of the ends of the rotation axis of the first rope reel (304) and the inner side of the first lifting shell (302); a floating plate (305) is arranged on the first lifting rope (309) between the first lifting shell (302) and the measuring pyramid (4); a through hole (310) is penetrated through the floating plate (305) for sliding the first lifting rope (309); more than two distance sensors (307) for detecting the distance from the floating plate (305) are arranged on the bottom side of the first lifting shell (302); the output ends of the torque sensor (306) and the distance sensor (307) are respectively electrically connected to the input end of the digital display control panel (10); and the output end of the digital display control panel (10) is electrically connected to the input end of the first motor (303).

7. The device for measuring underwater topography in shallow water areas according to claim 5, characterized in that: The positioning clamping structure (5) comprises an embedding groove (501) provided on the inner side wall of the opening groove (204), a second electric telescopic rod (502) being fixedly arranged in the embedding groove (501), a push rod head end of the second electric telescopic rod (502) facing the opening groove (204) and being fixedly connected to a clamping plate (503), an outer contour of the clamping plate (503) being consistent with an outer contour of the measuring pyramid (4), and an output end of the digital display control panel (10) being electrically connected to an input end of the second electric telescopic rod (502).

8. The device for measuring underwater topography in shallow water areas according to claim 2, characterized in that: The ballast balance assembly (7) includes a slide (701) slidably arranged on a main support rod (101), a U-shaped storage rack (702) is fixedly arranged on one side of the slide (701), a plurality of ballast blocks (703) are detachably arranged in the storage rack (702), more than two hanging rods (704) are fixedly arranged in the storage rack (702), each of the ballast blocks (703) is penetrated by a hanging hole for sliding through the hanging rod (704), a third electric telescopic rod (705) is fixedly arranged on the main support rod (101) for driving the slide (701) to slide on the main support rod (101), a push rod head end of the third electric telescopic rod (705) is fixedly connected to the storage rack (702), and the output end of the digital display control panel (10) is electrically connected to the input end of the third electric telescopic rod (705).

9. The device for measuring underwater topography in shallow water areas according to claim 2, characterized in that: The support frame structure (8) comprises a connecting member (802), one side of the connecting member (802) is hinged to the main support pole (101) via a hinge seat (801), and the other side of the connecting member (802) is hinged to one end of two supporting legs (804) via two hinged swivels (803), each supporting leg (804) is fixedly provided with a nail foot (806) at the other end, a connecting belt (805) is provided between the two supporting legs (804), and two binding belts (807) are provided on the connecting belt (805) for binding the supporting legs (804) to the main support pole (101).

10. The device for measuring underwater topography in shallow water areas according to claim 2, characterized in that: The movable wheel structure (9) comprises a fixing seat (902) fixedly arranged on the main support rod (101), a second wheel frame (901) having a U-shaped outer profile being fixedly arranged on the fixing seat (902) by means of bolts, and a wheel body (903) being rotatably arranged on the second wheel frame (901).

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