Magnetometer tail towing device for surveying vessel

Abstract

The utility model relates to the technical field of marine surveying and mapping, and discloses a magnetometer tail towing device for a surveying ship, which comprises a magnetometer body, a towing chain connected with the surveying ship is arranged at the head part of the magnetometer body, a tail component is arranged at the tail part of the magnetometer body, and the towing chain is connected with the surveying ship. The tail assembly comprises a tail body block which can be in threaded connection with the magnetometer body. According to the magnetometer tail towing device for the surveying vessel, the balancing weight and the tail body block are integrated into the tail assembly, the tail assembly is arranged at the tail of the magnetometer body, so that enough sinking force is given to the magnetometer body, the connecting assembly is further arranged in the tail assembly, and the connecting assembly can utilize components contained in the connecting assembly; the states of the two connecting bolts are adjusted at the same time, so that the connecting relation between the two balancing weights and the tail body block can be changed at the same time through the two connecting bolts, and the purposes of simplifying the operation step of replacing the balancing weights and improving the use efficiency of the whole device are achieved.

Description

Technical Field

[0001] This utility model relates to the field of marine surveying technology, specifically to a stern-towed magnetometer for surveying ships. Background Technology

[0002] Marine magnetometers are an indispensable tool in marine geophysical exploration and marine engineering development. By measuring magnetic anomalies on the seabed, they can infer seabed geological structures and mineral distribution.

[0003] When conducting marine measurements, magnetometers need to be stably suspended or close to the seabed. This requires the installation of counterweights to provide the necessary sinking force, enabling the magnetometer to descend smoothly to the predetermined measurement depth and maintain a stable measurement posture. The weight of the counterweights also needs to be adjusted according to different measurement depths. To simplify the installation steps of counterweights of different weights, we propose a tail-towed magnetometer for measuring ships. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a stern-towed magnetometer for measuring ships, which solves the problems mentioned in the background.

[0005] This utility model provides the following technical solution: a tail tow for a magnetometer used on a measuring vessel, comprising: a magnetometer body, a drag chain for connecting the head of the magnetometer body to the measuring vessel, a tail assembly on the tail of the magnetometer body, the tail assembly including a tail block threadedly connected to the magnetometer body, a limiting sleeve fixedly mounted on the outer surface of the tail block, a connecting nut inserted into the limiting sleeve, and a counterweight fixedly mounted on the side of the connecting nut; a connecting assembly is also provided on the tail block, the connecting assembly including a columnar block rotatably mounted on the tail block, a connecting shaft fixedly mounted on the bottom surface of the columnar block, and a fixed mounting bracket. The system includes a main bevel gear mounted at the lower end of the connecting shaft, a secondary bevel gear meshing and driving with the main bevel gear, a disc-shaped shaft rotatably disposed inside the tail block and fixedly connected to the secondary bevel gear, a square rod fixedly mounted on the side of the disc-shaped shaft, a connecting bolt slidably connected to the square rod, an auxiliary nut fixedly mounted on the inner wall of the tail block and threadedly connected to the connecting bolt, a slide rod slidably disposed inside the connecting shaft, a slider fixedly mounted at the top of the slide rod, a connecting rod fixedly mounted at the bottom of the slide rod, a dynamic friction ring fixedly mounted at the end of the connecting rod, a fixed friction ring fixedly mounted inside the tail block, and a return spring fixedly connected at both ends to the slider and the columnar block respectively.

[0006] Preferably, the columnar block has a hexagonal socket that mates with a hexagonal wrench, the slider has the same shape as the hexagonal socket, and the slider is slidably connected to the columnar block.

[0007] Preferably, there are two secondary bevel gears, which are symmetrically arranged on both sides of the central axis of the connecting shaft.

[0008] Preferably, the square rod is located in the cavity inside the tail block, and a limiting block is fixedly installed on the end of the square rod, and the limiting block is located inside the connecting bolt and is slidably connected to the connecting bolt.

[0009] Preferably, the connecting bolt is located in the cavity inside the limiting sleeve, and the connecting bolt can be threadedly connected to the connecting nut.

[0010] Preferably, the dynamic friction ring has friction patterns on its side near the fixed friction ring to enhance the friction between the dynamic friction ring and the fixed friction ring.

[0011] Preferably, the connecting shaft has grooves for passing through both ends of the connecting rod.

[0012] Preferably, there are two of each of the limiting sleeve and the counterweight, and the two counterweights are symmetrically arranged on both sides of the center line of the tail block.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The tail-mounted magnetometer for measuring vessels combines a counterweight block and a tail block into a tail assembly, which is then positioned at the tail of the magnetometer body. This provides sufficient sinking force to the magnetometer body. The tail assembly also includes a connecting component. This connecting component allows for simultaneous adjustment of the state of two connecting bolts, thereby changing the connection relationship between the two counterweight blocks and the tail block. This simplifies the counterweight replacement process and improves the overall efficiency of the device.

[0015] 2. The tail tow of the magnetometer for the surveying vessel includes a fixed friction ring and a moving friction ring in its connecting components. Therefore, the friction between the fixed and moving friction rings can be used to limit the rotation of the internal components, thereby locking the state of the connecting bolts. This ensures the stability of the connection between the counterweight and the tail block, preventing the counterweight from falling off during the magnetometer's detection process. This further improves the overall stability of the device and meets the requirements of actual use. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a cross-sectional schematic diagram of the tail block structure of this utility model;

[0018] Figure 3 This is an exploded view of the square rod structure of this utility model;

[0019] Figure 4 for Figure 2 Enlarged schematic diagram of the structure at point A in the middle;

[0020] Figure 5 This is an exploded view of the slide bar structure of this utility model.

[0021] In the diagram: 1. Magnetometer body; 2. Cable chain; 3. Tail assembly; 31. Tail block; 32. Counterweight; 33. Connecting nut; 34. Limiting sleeve; 4. Connecting assembly; 41. Columnar block; 42. Slider; 43. Connecting shaft; 44. Main bevel gear; 45. Secondary bevel gear; 46. Disc shaft; 47. Square rod; 471. Limiting block; 48. Auxiliary nut; 49. Connecting bolt; 410. Return spring; 411. Slide rod; 412. Fixed friction ring; 413. Dynamic friction ring; 414. Connecting rod. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-5 A tail-towed magnetometer for a surveying vessel includes: a magnetometer body 1, a tow chain 2 for connecting to the surveying vessel at the head of the magnetometer body 1, and a tail assembly 3 at the tail of the magnetometer body 1. The tail assembly 3 includes a tail block 31 that can be threadedly connected to the magnetometer body 1. A limiting sleeve 34 is fixedly installed on the outer surface of the tail block 31, and a connecting nut 33 is inserted into the limiting sleeve 34. A counterweight 32 is fixedly installed on the side of the connecting nut 33. Two limiting sleeves 34 and two counterweights 32 are provided. The two counterweights 32 are symmetrically arranged on both sides of the center line of the tail block 31. The symmetrical arrangement of the two counterweights 32 makes the overall structure more stable, ensuring that the magnetometer body 1 still has a stable attitude when it is in the water, and ensuring that it can perform effective and stable detection work.

[0024] The tail block 31 is also provided with a connecting assembly 4, which includes a columnar block 41 rotatably mounted on the tail block 31, a connecting shaft 43 fixedly mounted on the bottom surface of the columnar block 41, a main bevel gear 44 fixedly mounted on the lower end of the connecting shaft 43, a secondary bevel gear 45 meshing and transmitting with the main bevel gear 44, a disc-shaped shaft 46 rotatably mounted inside the tail block 31 and fixedly connected to the secondary bevel gear 45, a square rod 47 fixedly mounted on the side of the disc-shaped shaft 46, a connecting bolt 49 slidably connected to the square rod 47, and a fixing bolt. An auxiliary nut 48 is installed on the inner wall of the tail block 31 and threadedly connected to the connecting bolt 49; a slide rod 411 is slidably disposed inside the connecting shaft 43; a slider 42 is fixedly installed at the top of the slide rod 411; a connecting rod 414 is fixedly installed at the bottom of the slide rod 411; a dynamic friction ring 413 is fixedly installed at the end of the connecting rod 414; a fixed friction ring 412 is fixedly installed inside the tail block 31; and a return spring 410 is fixedly connected at both ends to the slider 42 and the columnar block 41, respectively. The columnar block 41 has a mechanism for engaging a hexagonal wrench. The hexagonal socket has a slider 42 with the same shape, and the slider 42 is slidably connected to the cylindrical block 41. Two secondary bevel gears 45 are provided, symmetrically arranged on both sides of the central axis of the connecting shaft 43. A square rod 47 is located in the internal cavity of the tail block 31, and a limit block 471 is fixedly installed on the end of the square rod 47. The limit block 471 is located inside the connecting bolt 49 and slidably connected to the connecting bolt 49. The limit block 471 prevents the connecting bolt 49 from falling off, ensuring the structure is in good working order. To ensure the stability of the connection between the structures, the connecting bolt 49 is located in the cavity inside the limiting sleeve 34, and the connecting bolt 49 can be threadedly connected to the connecting nut 33. The side of the moving friction ring 413 near the fixed friction ring 412 is provided with friction grooves to enhance the friction between the moving friction ring 413 and the fixed friction ring 412. This design can ensure that the moving friction ring 413 and the fixed friction ring 412 can form a certain friction force, thereby locking the state of the internal structure and improving the stability of the overall structure. The connecting shaft 43 is provided with a sliding groove for passing through both ends of the connecting rod 414.

[0025] Working principle: The connecting nut 33 fixed on the counterweight 32 can be inserted into the limiting sleeve 34 fixed on the tail block 31. Then, using the threaded connection between the connecting nut 33 and 39, the counterweight 32 is fixed to the side of the tail block 31. The tail block 31 can be connected to the magnetometer body 1. Then, the drag chain 2 is used to connect the magnetometer body 1 to the survey vessel. After the survey vessel is sailing, the magnetometer body 1 can be dragged to the stern of the survey vessel and placed into the ocean interior for detection. When it is necessary to change the counterweight 32 to a different weight, first insert the hexagonal wrench into the cylindrical block 41. The slider 42 is squeezed inside the cylindrical block 41. As the slider slides downwards, the sliding rod 411, fixed to the slider 42, is connected to the moving friction ring 413 via the connecting rod 414. The moving friction ring 413 slides downwards synchronously, creating a gap between the moving friction ring 413 and the fixed friction ring 412 inside the tail block 31. This drives the columnar block 41 to rotate, and the connecting shaft 43, fixed to the columnar block 41, rotates synchronously inside the tail block 31. Because the main bevel gear 44 and the secondary bevel gear 45, fixed to the end of the connecting shaft 43, mesh and transmit power, and the secondary bevel gear 45 is fixed to the side of the disc-shaped shaft 46, the disc-shaped shaft 46 rotates with the connecting shaft 43. The square rod 47 on shaft 46 rotates synchronously, and the connecting bolt 49, which is slidably connected to the square rod 47, is also threadedly connected to the auxiliary nut 48 fixed inside the tail block 31. Therefore, after the square rod 47 rotates, the connecting bolt 49 will unscrew from inside the connecting nut 33, releasing the connection between the bolt and the nut 33. When replacing the counterweight 32 and the connecting nut 33 with the appropriate weight, the columnar block 41 is rotated again, causing the connecting bolt 49 to screw back into the connecting nut 33, connecting the counterweight 32 to the tail block 31. Finally, the hex wrench is pulled out, the slider 42 is released from its restraint, and the slider 42 and the columnar block 48 are respectively connected at both ends. Under the elastic action of the fixed connection return spring 410, the slider 42, slide rod 411, connecting rod 414 and moving friction ring 413 slide upward synchronously, eliminating the gap between the fixed friction ring 412 and the moving friction ring 413, so that the moving friction ring 413 and the fixed friction ring 412 are in close contact. Then, the friction patterns on the contact surfaces of the moving friction ring 413 and the fixed friction ring 412 cooperate with each other to generate a certain friction force. Since the connecting rod 414 and slide rod 411 are all in a sliding connection relationship with the connecting shaft 43, the rotation of the connecting shaft 43 can be restricted under the action of this friction force, thereby locking the internal structure movement and locking the state of the connecting bolt 49.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A stern-towed measuring instrument for ships, characterized in that, include: The magnetometer body (1) has a drag chain (2) at its head that connects to the measuring vessel. The tail assembly (3) is provided at the tail of the magnetometer body (1). The tail assembly (3) includes a tail block (31) that can be threadedly connected to the magnetometer body (1). A limiting sleeve (34) is fixedly installed on the outer surface of the tail block (31). A connecting nut (33) is inserted into the limiting sleeve (34). A counterweight (32) is fixedly installed on the side of the connecting nut (33). The tail block (31) is also provided with a connecting assembly (4), which includes a columnar block (41) rotatably disposed on the tail block (31), a connecting shaft (43) fixedly installed on the bottom surface of the columnar block (41), a main bevel gear (44) fixedly installed on the lower end of the connecting shaft (43), a secondary bevel gear (45) meshing and transmitting with the main bevel gear (44), a disc-shaped shaft (46) rotatably disposed inside the tail block (31) and fixedly connected with the secondary bevel gear (45), a square rod (47) fixedly installed on the side of the disc-shaped shaft (46), and a slidably connected to the square rod (47). The following components are included: a connecting bolt (49), an auxiliary nut (48) fixedly installed on the inner wall of the tail block (31) and threadedly connected to the connecting bolt (49), a slide rod (411) slidably installed inside the connecting shaft (43), a slider (42) fixedly installed at the top of the slide rod (411), a connecting rod (414) fixedly installed at the bottom of the slide rod (411), a dynamic friction ring (413) fixedly installed at the end of the connecting rod (414), a fixed friction ring (412) fixedly installed inside the tail block (31), and a return spring (410) fixedly connected at both ends to the slider (42) and the columnar block (41) respectively.

2. The stern-towed magnetometer for measuring ships according to claim 1, characterized in that, The columnar block (41) has a hexagonal socket that mates with a hexagonal wrench. The shape of the slider (42) is consistent with the shape of the hexagonal socket, and the slider (42) is slidably connected to the columnar block (41).

3. The stern-towed magnetometer for measuring ships according to claim 1, characterized in that, There are two secondary bevel gears (45), which are symmetrically arranged on both sides of the central axis of the connecting shaft (43).

4. The stern-towed magnetometer for measuring ships according to claim 1, characterized in that, The square rod (47) is located in the cavity inside the tail block (31). A limiting block (471) is fixedly installed on the end of the square rod (47), and the limiting block (471) is located inside the connecting bolt (49) and is slidably connected to the connecting bolt (49).

5. The stern-towed magnetometer for measuring ships according to claim 1, characterized in that, The connecting bolt (49) is located in the cavity inside the limiting sleeve (34), and the connecting bolt (49) can be threadedly connected to the connecting nut (33).

6. The stern-towed magnetometer for measuring ships according to claim 1, characterized in that, The dynamic friction ring (413) has friction patterns on its side near the fixed friction ring (412) to enhance the friction between it and the fixed friction ring (412).

7. The stern-towed magnetometer for measuring ships according to claim 1, characterized in that, The connecting shaft (43) has grooves for passing through both ends of the connecting rod (414).

8. The stern-towed magnetometer for measuring ships according to claim 1, characterized in that, Two of each of the limiting sleeve (34) and the counterweight (32) are provided, and the two counterweights (32) are symmetrically arranged on both sides of the center line of the tail block (31).

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