Underwater positioning device for marine surveying and mapping

Abstract

The invention discloses an underwater positioning device for marine surveying and mapping, and relates to the technical field of underwater positioning, the underwater positioning device comprises a protective shell, a supporting seat is fixedly mounted at the bottom of the protective shell, a sealing sliding door is slidably mounted on the inner wall of the protective shell, a handle is fixedly mounted at the top of the sealing sliding door, and a hanging ring is fixedly mounted at the top of the protective shell; a fixing plate is fixedly mounted on the inner wall of the protective shell, a sonar positioning system is fixedly mounted at the top of the fixing plate, a counterweight frame is fixedly mounted on the outer wall of the protective shell, a counterweight block is arranged on the inner wall of the counterweight frame, and rotating shafts are rotationally mounted at the top and the bottom of the counterweight frame. The rotating shaft rotates to drive the rotating rod to rotate, the balancing weight is added into the counterweight frame after the rotating rod finishes rotating, and the sealing sliding door is limited through the limiting block, so that the sealing sliding door is prevented from moving upwards, water enters the equipment, and the equipment is corroded and aged.

Description

Technical Field

[0001] The present invention relates to the field of underwater positioning technology, in particular to an underwater positioning device used for ocean surveying and mapping. Background Art

[0002] The underwater positioning device in ocean surveying is a technical tool used to obtain the precise position of underwater targets or equipment. The equipment is transported to the sea surface by a transport ship, then lowered to the seabed by a lifting rope and positioned by a sonar positioning system.

[0003] The patent with patent announcement number CN204587234U relates to an underwater positioning device for a platform, including an outer cover, an upper fixed plate, a lower fixed plate, a hydraulic cylinder, a hydraulic motor, a connecting rod, a drill bit, and a movable plate. The outer cover is connected to the lower fixed plate to form the outer shell of the device. The upper fixed plate and the lower fixed plate are connected up and down by guide columns. The hydraulic cylinder is installed downward on the upper fixed plate and a movable plate is installed at the end of the piston rod of the hydraulic cylinder. The movable plate is penetrated by the guide column and rises and falls along the guide column under the drive of the hydraulic cylinder. The hydraulic motor is installed downward on the movable plate and its rotating shaft is connected to the drill bit through a connecting rod; the lower fixed plate is opened with a hole at the position corresponding to the connecting rod and the drill bit so that the drill bit can extend through the hole from under the lower positioning plate.

[0004] In the above patent, the hydraulic motor is mounted downward on a movable plate and its rotating shaft is connected to the drill bit through a connecting rod; a hole is opened in the lower fixing plate at the position corresponding to the connecting rod and the drill bit so that the drill bit can extend out from under the lower positioning plate through the hole. However, the equipment may be in a rocky area on the seabed, and using a drill bit to drill a hole to fix the equipment may be unstable, resulting in the equipment being unable to be fixed on the seabed. Summary of the invention

[0005] In view of the deficiencies of the prior art, the present invention provides an underwater positioning device for ocean surveying and mapping, which solves the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: an underwater positioning device for marine surveying and mapping, comprising: a protective shell, a support seat is fixedly installed at the bottom of the protective shell, a sealed sliding door is slidably installed on the inner wall of the protective shell, a handle is fixedly installed on the top of the sealed sliding door, a lifting ring is fixedly installed on the top of the protective shell, a fixed plate is fixedly installed on the inner wall of the protective shell, a sonar positioning system is fixedly installed on the top of the fixed plate, a counterweight frame is fixedly installed on the outer wall of the protective shell, a counterweight block is arranged on the inner wall of the counterweight frame, a rotating shaft is rotatably installed on the top and bottom of the counterweight frame, a rotating rod is fixedly installed on the surface of the rotating shaft, a sliding block is slidably installed on the surface of the counterweight frame, a limiting block is fixedly installed on the surface of the sliding block, and the limiting block contacts the surface of the sealed sliding door, firstly, the rotating shaft at the bottom of the counterweight frame is rotated, and the rotation of the rotating shaft will drive the rotating rod to rotate, and the counterweight block is added to the inside of the counterweight frame after the rotating rod rotates, and when the counterweight block completely enters the counterweight frame, the rotating shaft and the rotating rod at the top of the counterweight frame are rotated to limit the counterweight block.

[0007] The equipment is placed steadily on the seabed through the lifting device, and the sonar positioning system sends out sound wave signals to the receiver on the transport ship, providing real-time positioning information of underwater targets. It is widely used in seabed exploration and environmental monitoring. When the counterweight block is completely inserted into the counterweight frame, the rotating shaft and rotating rod on the top of the counterweight frame are rotated to limit the counterweight block. The weight of the counterweight block itself ensures a smooth descent to prevent the equipment from shaking left and right during the descent, affecting the safe placement of the equipment. At the same time, the sealing sliding door is limited by the limit block to prevent the sealing sliding door from moving upward, causing water to enter the equipment and causing corrosion and aging of the equipment.

[0008] According to the above technical solution, a No. 1 spring is arranged between the counterweight frame and the sliding block, and the sliding block is reset by the No. 1 spring, and a lifting device is arranged above the lifting ring.

[0009] According to the above technical solution, the surface of the counterweight frame is provided with a supporting device for auxiliary supporting equipment and a sealing device for improving the sealing effect, the supporting device includes a sliding rod, a supporting base plate, a connecting rod and a card plate, and the equipment is placed on the bottom of the water, and the supporting base plate will contact the bottom of the water during the process of placing it on the bottom of the water. Due to the weight of the equipment itself, the sliding rod will shrink, and the protective shell will move downward to drive the counterweight frame to move downward. The sliding rod slides through the surface of the support seat, the supporting base plate is fixedly installed at the bottom of the sliding rod, the connecting rod is fixedly installed on the top of the supporting base plate, and the card plate is fixedly installed on the top of the connecting rod.

[0010] According to the above technical solution, a connecting plate is fixedly installed at the bottom of the sliding rod, a sliding plate is slidably installed on the inner wall of the protective shell, a sealing plate is fixedly installed on the surface of the sliding plate, a square plate is fixedly installed on the surface of the counterweight frame, a support frame is rotatably installed on the inner wall of the square plate, and a rotating plate is fixedly installed on the surface of the support frame. The downward movement of the protective shell will cause the connecting plate to move upward, the upward movement of the connecting plate will drive the sliding plate to move upward, the upward movement of the sliding plate will push the rotating plate to move upward, the upward movement of the rotating plate will drive the support frame to rotate downward, and the downward rotation of the support frame will support the equipment.

[0011] According to the above technical solution, a No. 2 spring is arranged between the sliding rod and the support seat, and the No. 2 spring is used to drive the sliding rod to reset. A No. 3 spring is arranged between the protective shell and the sliding plate, and the No. 3 spring is used to drive the sliding plate to reset. A No. 1 torsion spring is arranged between the square plate and the support frame, and the No. 1 torsion spring is used to drive the support frame to reset.

[0012] According to the above technical solution, the sealing device includes an L-shaped plate, a supporting slide plate, a trapezoidal block, a connecting block and a supporting plate. The sealing plate is driven upward by the upward movement of the sliding plate. The upward movement of the sealing plate will drive the L-shaped plate to move upward. The upward movement of the L-shaped plate will push the trapezoidal block to move toward the protective shell. The supporting slide plate is slidably installed on the bottom of the fixed plate, the L-shaped plate is fixedly installed on the surface of the sealing plate, the trapezoidal block is fixedly installed on the surface of the supporting slide plate, the connecting block is fixedly installed on the top of the supporting slide plate, and the support plate is fixedly installed on the top of the connecting block.

[0013] The downward movement of the counterweight frame will drive the rotating shaft and the rotating rod to move downward. The downward movement of the rotating rod will be stuck between the card plates. The card plates will limit the rotating rod to prevent the counterweight from slipping and causing the equipment to shake left and right during recovery, affecting the recovery of the equipment. The upward movement of the sliding plate will push the rotating plate to move upward. The upward movement of the rotating plate will drive the support frame to rotate downward. The downward rotation of the support frame will support the equipment to prevent the equipment from being unstable when placed on the bottom of the water, posing a safety hazard.

[0014] According to the above technical solution, a sliding groove is provided on the inner wall of the protective shell, a sliding long plate is slidably installed on the inner wall of the sliding groove, a groove is provided on the surface of the protective shell, a sealing block is slidably installed on the inner wall of the groove, and an air hole is provided between the sliding groove and the groove. When the support slide plate and the support plate move toward the direction close to the protective shell, the sliding long plate will be squeezed to move away from the support plate. When the sliding long plate moves away from the support plate, the gas inside the sliding groove will enter the groove through the air hole.

[0015] According to the above technical solution, a No. 4 spring is arranged between the supporting slide plate and the fixed plate, and the supporting slide plate is reset by the No. 4 spring. A No. 5 spring is arranged between the inner wall of the sliding groove and the sliding long plate, and the sliding long plate is reset by the No. 5 spring. A No. 6 spring is arranged between the groove and the sealing block, and the sealing block is reset by the No. 6 spring.

[0016] By supporting the sliding plate and the supporting plate to move toward the protective shell, the inner wall of the protective shell will be supported to prevent the underwater pressure from being too high, which will cause the protective shell to be deformed and pose a safety hazard. At the same time, the supporting sliding plate and the supporting plate to move toward the protective shell will squeeze the sliding long plate to move away from the supporting plate. The sliding long plate to move away from the supporting plate will squeeze the gas inside the slide groove into the groove through the air holes. The gas will push the sealing block to move toward the sealing sliding door, and the sealing sliding door will be sealed by the sealing block to improve the sealing effect.

[0017] The present invention provides an underwater positioning device for ocean surveying and mapping. It has the following beneficial effects:

[0018] (1) This invention uses a lifting device to steadily place the equipment on the seabed, and transmits sound wave signals to the receiver on the transport ship through the sonar positioning system, providing real-time positioning information of underwater targets. It is widely used in seabed exploration and environmental monitoring. When the counterweight block is completely inserted into the counterweight frame, the rotating shaft and rotating rod on the top of the counterweight frame are rotated to limit the counterweight block. The weight of the counterweight block itself ensures a smooth descent and prevents the equipment from shaking left and right during the descent, affecting the safe placement of the equipment. At the same time, the sealing sliding door is limited by the limit block to prevent the sealing sliding door from moving upward, causing water to enter the equipment and causing corrosion and aging of the equipment.

[0019] (2) In this invention, the downward movement of the counterweight frame will drive the rotating shaft and the rotating rod to move downward. The downward movement of the rotating rod will get stuck between the clamping plates, and the clamping plates will limit the rotating rod to prevent the counterweight from slipping, causing the equipment to shake left and right during recovery, affecting the recovery of the equipment. The upward movement of the sliding plate will push the rotating plate to move upward. The upward movement of the rotating plate will drive the support frame to rotate downward. The downward rotation of the support frame will support the equipment to prevent the equipment from being unstable when placed on the bottom of the water, which poses a safety hazard.

[0020] (3) The invention supports the inner wall of the protective shell by supporting the sliding plate and the supporting plate to move toward the protective shell, thereby preventing the underwater pressure from being too high and causing the protective shell to deform, thereby posing a safety hazard. At the same time, the movement of the supporting sliding plate and the supporting plate toward the protective shell will squeeze the long sliding plate to move away from the supporting plate. The movement of the long sliding plate away from the supporting plate will squeeze the gas inside the slide groove into the groove through the air holes. The gas pushes the sealing block to move toward the sealing sliding door, and the sealing sliding door is sealed by the sealing block, thereby improving the sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the overall cross-sectional structure of the present invention;

[0023] Figure 3 This is a schematic diagram of the bottom structure of the protective shell of the present invention;

[0024] Figure 4 This is a schematic diagram of the cross-sectional structure of the protective shell of the present invention;

[0025] Figure 5 This is a schematic diagram of the cross-sectional structure of the counterweight frame of the present invention;

[0026] Figure 6 This is a schematic diagram of the structure of the fixing plate and the supporting slide plate of the present invention;

[0027] Figure 7 It is a schematic diagram of the structure of the support plate and the sliding long plate of the present invention.

[0028] In the figure: 1. protective shell; 2. support seat; 3. sealed sliding door; 4. handle; 5. lifting ring; 6. fixing plate; 7. sonar positioning system; 8. counterweight rack; 9. counterweight block; 10. rotating shaft; 11. rotating rod; 12. sliding block; 13. limiting block; 141. sliding rod; 142. supporting bottom plate; 143. connecting rod; 144. clamping plate; 145. connecting plate; 146. sliding plate; 147. sealing plate; 148. square plate; 149. support frame; 1410. rotating plate; 151. L-shaped plate; 152. supporting slide plate; 153. trapezoidal block; 154. connecting block; 155. supporting plate; 156. sliding long plate; 157. air hole; 158. sealing block. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0030] See also Figure 1-Figure 7One embodiment of the present invention is: an underwater positioning device for marine surveying and mapping, comprising: a protective shell 1, a support seat 2 is fixedly installed at the bottom of the protective shell 1, a sealed sliding door 3 is slidably installed on the inner wall of the protective shell 1, a handle 4 is fixedly installed on the top of the sealed sliding door 3, a lifting ring 5 is fixedly installed on the top of the protective shell 1, a fixing plate 6 is fixedly installed on the inner wall of the protective shell 1, and a sonar positioning system 7 is fixedly installed on the top of the fixing plate 6, a counterweight frame 8 is fixedly installed on the outer wall of the protective shell 1, a counterweight block 9 is arranged on the inner wall of the counterweight frame 8, a rotating shaft 10 is rotatably installed on the top and bottom of the counterweight frame 8, a rotating rod 11 is fixedly installed on the surface of the rotating shaft 10, a sliding block 12 is slidably installed on the surface of the sliding block 12, a limiting block 13 is fixedly installed on the surface of the sliding block 12, and the limiting block 13 is in contact with the surface of the sealed sliding door 3, and the weight of the counterweight block 9 itself ensures the stability during descent, and prevents the equipment from shaking left and right during descent, which affects the safe placement of the equipment.

[0031] A No. 1 spring is arranged between the counterweight frame 8 and the sliding block 12 , and the sliding block 12 is driven to reset by the No. 1 spring. A lifting device is arranged above the lifting ring 5 .

[0032] When this embodiment is working, the positioning device is transported to the sea surface by a transport ship, and then the device is stably placed on the seabed by a lifting device. The sonar positioning system 7 sends a sound wave signal to the receiver on the transport ship, providing real-time positioning information of underwater targets. It is widely used in seabed exploration and environmental monitoring. At the same time, when it is placed in the water, the rotating shaft 10 at the bottom of the counterweight frame 8 is first rotated. The rotation of the rotating shaft 10 will drive the rotating rod 11 to rotate. After the rotation of the rotating rod 11 is completed, the counterweight block 9 is added to the inside of the counterweight frame 8. When the counterweight block 9 completely enters the counterweight frame 8, the counterweight frame 8 is rotated. The rotating shaft 10 and the rotating rod 11 at the top limit the counterweight block 9, and the weight of the counterweight block 9 itself ensures a smooth descent to prevent the equipment from shaking left and right during the descent, which affects the safe placement of the equipment. At the same time, the rotation of the rotating rod 11 will push the sliding block 12 to move toward the direction close to the sealed sliding door 3. The movement of the sliding block 12 toward the direction close to the sealed sliding door 3 will drive the limiting block 13 to move toward the direction close to the sealed sliding door 3. The sealing sliding door 3 is limited by the limiting block 13 to prevent the sealing sliding door 3 from moving upward, which will cause water to enter the equipment and cause corrosion and aging of the equipment.

[0033] See also Figure 1-Figure 7On the basis of the above-mentioned embodiment, in another embodiment of the present invention, a support device for auxiliary supporting equipment and a sealing device for improving the sealing effect are provided on the surface of the counterweight frame 8, and the support device includes a sliding rod 141, a supporting base plate 142, a connecting rod 143 and a clamping plate 144. The sliding rod 141 slides through the surface of the supporting seat 2, the supporting base plate 142 is fixedly installed at the bottom of the sliding rod 141, the connecting rod 143 is fixedly installed at the top of the supporting base plate 142, and the clamping plate 144 is fixedly installed at the top of the connecting rod 143 to prevent the counterweight block 9 from slipping, causing the equipment to shake left and right during recovery, affecting the recovery of the equipment.

[0034] A connecting plate 145 is fixedly installed at the bottom of the sliding rod 141, a sliding plate 146 is slidably installed on the inner wall of the protective shell 1, a sealing plate 147 is fixedly installed on the surface of the sliding plate 146, a square plate 148 is fixedly installed on the surface of the counterweight frame 8, a supporting frame 149 is rotatably installed on the inner wall of the square plate 148, and a rotating plate 1410 is fixedly installed on the surface of the supporting frame 149 to prevent the equipment from being unstable when placed on the bottom of the water, which poses a safety hazard.

[0035] A No. 2 spring is arranged between the sliding rod 141 and the support seat 2, and the sliding rod 141 is reset by the No. 2 spring. A No. 3 spring is arranged between the protective shell 1 and the sliding plate 146, and the sliding plate 146 is reset by the No. 3 spring. A No. 1 torsion spring is arranged between the square plate 148 and the support frame 149, and the support frame 149 is reset by the No. 1 torsion spring.

[0036] The sealing device includes an L-shaped plate 151, a supporting slide 152, a trapezoidal block 153, a connecting block 154 and a supporting plate 155. The supporting slide 152 is slidably installed on the bottom of the fixed plate 6, the L-shaped plate 151 is fixedly installed on the surface of the sealing plate 147, the trapezoidal block 153 is fixedly installed on the surface of the supporting slide 152, the connecting block 154 is fixedly installed on the top of the supporting slide 152, and the supporting plate 155 is fixedly installed on the top of the connecting block 154 to prevent the underwater pressure from being too high, which may cause deformation of the protective shell 1 and pose a safety hazard.

[0037] A sliding groove is provided on the inner wall of the protective shell 1, and a sliding long plate 156 is slidably installed on the inner wall of the sliding groove. A groove is provided on the surface of the protective shell 1, and a sealing block 158 is slidably installed on the inner wall of the groove. An air hole 157 is provided between the sliding groove and the groove, and the sealing block 158 is pushed by gas to move in the direction of the sealing sliding door 3, and the sealing sliding door 3 is sealed by the sealing block 158 to improve the sealing effect.

[0038] A No. 4 spring is arranged between the supporting slide plate 152 and the fixed plate 6, and the supporting slide plate 152 is reset by the No. 4 spring. A No. 5 spring is arranged between the inner wall of the slide groove and the sliding long plate 156, and the sliding long plate 156 is reset by the No. 5 spring. A No. 6 spring is arranged between the groove and the sealing block 158, and the sealing block 158 is reset by the No. 6 spring.

[0039] When this embodiment is working: by placing the equipment on the bottom of the water, the supporting bottom plate 142 will contact the bottom of the water during the process of placing it on the bottom of the water. Due to the weight of the equipment itself, the sliding rod 141 will shrink, and the downward movement of the protective shell 1 will drive the counterweight frame 8 to move downward. The downward movement of the counterweight frame 8 will drive the rotating shaft 10 and the rotating rod 11 to move downward. The downward movement of the rotating rod 11 will be stuck between the clamping plate 144, and the clamping plate 144 will limit the rotating rod 11 to prevent the counterweight block 9 from slipping, causing the equipment to shake left and right during recovery, affecting the recovery of the equipment. At the same time, the downward movement of the protective shell 1 will cause the connecting plate 145 to move upward. The upward movement of the connecting plate 145 will drive the sliding plate 146 to move upward. The upward movement of the sliding plate 146 will push the rotating plate 1410 to move upward. The upward movement of the rotating plate 1410 will drive the supporting frame 149 to rotate downward. The downward rotation of the supporting frame 149 will support the equipment to prevent the equipment from being unstable when placed on the bottom of the water, posing a safety hazard.

[0040] The upward movement of the sliding plate 146 drives the sealing plate 147 to move upward, and the upward movement of the sealing plate 147 drives the L-shaped plate 151 to move upward, and the upward movement of the L-shaped plate 151 drives the trapezoidal block 153 to move in the direction close to the protective shell 1, and the movement of the trapezoidal block 153 in the direction close to the protective shell 1 drives the supporting slide plate 152 to move in the direction close to the protective shell 1, and the movement of the supporting slide plate 152 in the direction close to the protective shell 1 drives the connecting block 154 and the supporting plate 155 to move in the direction close to the protective shell 1. The movement in the direction will support the inner wall of the protective shell 1 to prevent the underwater pressure from being too high, which will cause the protective shell 1 to be deformed and pose a safety hazard. At the same time, the support slide plate 152 and the support plate 155 moving in the direction close to the protective shell 1 will squeeze the sliding long plate 156 to move in the direction away from the support plate 155. The sliding long plate 156 moving in the direction away from the support plate 155 will squeeze the gas inside the slide groove to enter the groove through the air hole 157, and the sealing block 158 will be pushed by the gas to move in the direction of the sealing sliding door 3, and the sealing sliding door 3 will be sealed by the sealing block 158 to improve the sealing effect.

[0041] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An underwater positioning device for ocean surveying and mapping, characterized in that: The invention comprises a protective shell (1), a support seat (2) is fixedly mounted on the bottom of the protective shell (1), a sealed sliding door (3) is slidably mounted on the inner wall of the protective shell (1), a handle (4) is fixedly mounted on the top of the sealed sliding door (3), a lifting ring (5) is fixedly mounted on the top of the protective shell (1), a fixing plate (6) is fixedly mounted on the inner wall of the protective shell (1), a sonar positioning system (7) is fixedly mounted on the top of the fixing plate (6), a counterweight frame (8) is fixedly mounted on the outer wall of the protective shell (1), and the counterweight frame ( 8) A counterweight block (9) is arranged on the inner wall, a rotating shaft (10) is rotatably mounted on the top and bottom of the counterweight frame (8), a rotating rod (11) is fixedly mounted on the surface of the rotating shaft (10), a sliding block (12) is slidably mounted on the surface of the counterweight frame (8), a limit block (13) is fixedly mounted on the surface of the sliding block (12), the limit block (13) is in contact with the surface of the sealing sliding door (3), and a supporting device for auxiliary supporting equipment and a sealing device for improving the sealing effect are arranged on the surface of the counterweight frame (8).

2. The underwater positioning device for ocean surveying and mapping according to claim 1, characterized in that: A No. 1 spring is provided between the counterweight frame (8) and the sliding block (12), and a lifting device is provided above the lifting ring (5).

3. The underwater positioning device for ocean surveying and mapping according to claim 2, characterized in that: The support device comprises a sliding rod (141), a supporting base plate (142), a connecting rod (143) and a clamping plate (144); the sliding rod (141) slides through the surface of the supporting seat (2); the supporting base plate (142) is fixedly mounted on the bottom of the sliding rod (141); the connecting rod (143) is fixedly mounted on the top of the supporting base plate (142); and the clamping plate (144) is fixedly mounted on the top of the connecting rod (143).

4. The underwater positioning device for ocean surveying and mapping according to claim 3, characterized in that: A connecting plate (145) is fixedly mounted on the bottom of the sliding rod (141), a sliding plate (146) is slidably mounted on the inner wall of the protective shell (1), and a sealing plate (147) is fixedly mounted on the surface of the sliding plate (146).

5. The underwater positioning device for ocean surveying and mapping according to claim 4, characterized in that: A square plate (148) is fixedly mounted on the surface of the counterweight frame (8), a support frame (149) is rotatably mounted on the inner wall of the square plate (148), and a rotating plate (1410) is fixedly mounted on the surface of the support frame (149).

6. The underwater positioning device for ocean surveying and mapping according to claim 5, characterized in that: A No. 2 spring is provided between the sliding rod (141) and the support seat (2), a No. 3 spring is provided between the protective shell (1) and the sliding plate (146), and a No. 1 torsion spring is provided between the square plate (148) and the support frame (149).

7. The underwater positioning device for ocean surveying and mapping according to claim 6, characterized in that: The sealing device comprises an L-shaped plate (151), a supporting slide plate (152), a trapezoidal block (153), a connecting block (154) and a supporting plate (155); the supporting slide plate (152) is slidably mounted on the bottom of the fixing plate (6); and the L-shaped plate (151) is fixedly mounted on the surface of the sealing plate (147).

8. The underwater positioning device for ocean surveying and mapping according to claim 7, characterized in that: The trapezoidal block (153) is fixedly mounted on the surface of the supporting slide plate (152), the connecting block (154) is fixedly mounted on the top of the supporting slide plate (152), and the supporting plate (155) is fixedly mounted on the top of the connecting block (154).

9. The underwater positioning device for ocean surveying and mapping according to claim 8, characterized in that: The protective shell (1) has an inner wall provided with a slide groove, a long sliding plate (156) is slidably mounted on the inner wall of the slide groove, a groove is provided on the surface of the protective shell (1), a sealing block (158) is slidably mounted on the inner wall of the groove, and an air hole (157) is provided between the slide groove and the groove.

10. The underwater positioning device for ocean surveying and mapping according to claim 9, characterized in that: A No. 4 spring is provided between the supporting slide plate (152) and the fixed plate (6), a No. 5 spring is provided between the inner wall of the slide groove and the sliding long plate (156), and a No. 6 spring is provided between the groove and the sealing block (158).

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