Underwater laser detection bearing adjusting device erected on ice surface

Abstract

The invention is suitable for the technical field of laser detection, and provides an underwater laser detection bearing adjusting device erected on an ice surface, which comprises a transmitting end, a receiving end and a connecting belt, the transmitting end comprises a transmitting end bracket, an adjusting mechanism, a laser pen and a laser transmitting device; the adjusting mechanism comprises a direction adjusting mechanism and a pitching adjusting mechanism, the pitching adjusting mechanism is arranged on the transmitting end support through the direction adjusting mechanism, one end of the pitching adjusting mechanism is connected with the laser transmitting device through a first connecting assembly, and the laser pen is arranged at the other end of the pitching adjusting mechanism; the receiving end comprises a receiving end support, a reflector, a diaphragm mechanism and a laser receiving device. The diaphragm mechanism and the laser receiving device are both arranged on the receiving end support. According to the invention, through pre-alignment of the laser pen and the diaphragm mechanism and combination of bidirectional precision adjustment, precise transmission of a light path is ensured, and the device is suitable for scenes of under-ice detection and the like and has the characteristics of light weight, rapid installation and adjustment and high environmental adaptability.

Description

Technical Field

[0001] The present invention relates to the field of laser detection technology, in particular to an underwater laser detection bearing adjustment device mounted on an ice surface. Background Art

[0002] The Panama Canal shipping hub's operational crisis (2023) highlights the strategic value of dynamic polar ice monitoring in the context of global climate change, thereby propelling research on polar ice dynamics and evolution into a new stage of development. Comprehensive polar environment detection technology has been officially incorporated into the national key research and development tasks in the forefront of science and technology. Its core goal is to build an all-weather ice detection technology system that adapts to the needs of Arctic shipping route development and Antarctic scientific research. This is not only an important measure to address the evolving global polar governance landscape, but also a key technological path to enhance the country's polar strategic capabilities. Underwater laser detection technology beneath the ice has important application value in polar scientific research, glacier hydrological research, underwater resource exploration, and environmental monitoring. However, achieving high-precision optical path alignment and stable detection in low-temperature, dynamically changing ice environments still faces multiple technical bottlenecks. First, there are the material and structural challenges in extremely low-temperature environments. Traditional load-bearing devices, mostly made of metal or conventional composite materials, are prone to shrinkage and embrittlement in extreme temperatures below -30°C, leading to mechanical deformation and transmission component seizure. The second issue is the impact of the dynamic characteristics of the ice surface on optical path alignment. When the ice layer is affected by temperature gradients, water erosion, and external loads, it is prone to local melting, tilting, or crack expansion, causing the detection platform to drift. The existing fixed brackets lack adjustment and compensation capabilities, and the optical path offset is large, which seriously affects the detection resolution of underwater targets. The third issue is the environmental adaptability of the existing adjustment system. The mainstream optical path adjustment mechanism relies on motors or piezoelectric ceramics for drive, but is prone to problems such as motor torque attenuation and piezoelectric material response nonlinearity at low temperatures.

[0003] Existing laser detection devices utilize the principle of secondary reflection, whereby a first laser is reflected to form a second laser, which is then transmitted to a target with a different rotational orientation. For example, Chinese invention patent publication number CN108732577A proposes a laser detection device that lacks adjustment capabilities. Another Chinese invention patent publication number CN115685218A improves the laser detection device to accommodate smaller workspaces, expanding its scope of application. While the device is smaller, offers improved stability and reliability, it also lacks adjustment capabilities. Both laser detection devices fail to address low-temperature conditions and lack adjustment capabilities.

[0004] Existing load-bearing adjustment devices adjust the installation or placement angle of equipment. For example, Chinese invention patent publication number CN119713037A proposes a large load-bearing angle adjustment device. The pitch adjustment mechanism includes at least four pitch adjustment components, and the horizontal adjustment mechanism includes at least four horizontal adjustment components. The adjustment components are complex and do not take into account extreme environments. Accuracy is difficult to ensure in low-temperature environments.

[0005] Therefore, in view of the above situation, there is an urgent need to provide an underwater laser detection load-bearing adjustment device mounted on the ice surface to overcome the shortcomings in current practical applications. Summary of the Invention

[0006] The purpose of the present invention is to provide an underwater laser detection load-bearing and adjustment device mounted on an ice surface, aiming to solve the problems of existing laser detection devices having poor adaptability to low temperatures, lacking adjustment capabilities, and being heavy and unsuitable for bearing on ice surfaces.

[0007] The present invention is implemented as follows: an underwater laser detection load adjustment device mounted on an ice surface, comprising:

[0008] A transmitting end, a receiving end and a connecting belt, wherein the transmitting end and the receiving end are connected by the connecting belt;

[0009] The transmitting end includes a transmitting end bracket, an adjustment mechanism, a laser pen and a laser transmitting device;

[0010] The adjustment mechanism includes an azimuth adjustment mechanism and a pitch adjustment mechanism. The pitch adjustment mechanism is arranged on the transmitting end bracket through the azimuth adjustment mechanism, and one end of the pitch adjustment mechanism is connected to the laser emitting device through a first connecting component. The laser pen is arranged on the other end of the pitch adjustment mechanism.

[0011] The receiving end includes a receiving end bracket, a reflector, an aperture mechanism and a laser receiving device. The laser receiving device is installed in the middle of the receiving end bracket through a flange. The reflector and the receiving end bracket are connected through a second connecting component, and the center of the reflector is coaxial with the center of the laser receiving device. The aperture mechanism and the laser receiving device are both arranged on the receiving end bracket. The laser pen is aligned with the aperture mechanism for pre-calibration, and cooperates with the adjustment mechanism to adjust the optical path of the laser emitting device so that the laser can irradiate the center position of the reflector.

[0012] As a further solution of the present invention: the transmitting end bracket includes a transmitting end mounting plate and a first supporting member located below the transmitting end mounting plate, and a first level is provided on the transmitting end mounting plate.

[0013] As a further solution of the present invention: the first support member includes a first support leg arranged at the bottom of the launch end mounting plate, and there are three first support legs, and each first support leg is equipped with a first handle screw;.

[0014] As a further solution of the present invention: the azimuth adjustment mechanism includes a slewing bearing and an azimuth mechanism mounting plate, and the azimuth mechanism mounting plate is rotatably mounted on the transmitting end mounting plate via the slewing bearing;

[0015] The orientation mechanism mounting plate is also provided with a handle and a locking screw.

[0016] As a further solution of the present invention: the pitch adjustment mechanism includes a pitch mechanism gear box provided on the azimuth mechanism mounting plate, and the pitch mechanism gear box is equipped with a pitch mechanism frame and a hand wheel, and the top of the pitch mechanism frame has a mounting position for the laser pointer;

[0017] The first connecting assembly includes a first connecting rod and a first interface. The first interface is arranged at the end of the pitch mechanism frame away from the laser pen, and the first connecting rod is connected to the first interface. The first connecting rod is also equipped with a locking device.

[0018] As a further solution of the present invention: the surface of the reflector is coated with a waterproof and corrosion-resistant film layer.

[0019] As a further solution of the present invention: the receiving end bracket includes a receiving end mounting plate and a second support member located below the receiving end mounting plate, and a second level is provided on the receiving end mounting plate.

[0020] As a further solution of the present invention: the aperture mechanism includes an aperture and an aperture mechanism bracket provided on a receiving end mounting plate, and a height adjustment platform is provided between the aperture and the aperture mechanism bracket;

[0021] The second connecting assembly includes a second interface provided below the receiving end mounting plate, and a second connecting rod is connected to the second interface.

[0022] As a further solution of the present invention: the connecting belt is made of flexible material.

[0023] As a further solution of the present invention: the total weight of the transmitting end is less than 60kg, the total weight of the receiving end is less than 50kg, and both the transmitting end and the receiving end are made of low temperature resistant materials.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. Composite leveling technology: A rapid leveling solution with three-level support legs and a high-precision spirit level solves the problem of dynamic settlement of the ice surface.

[0026] 2. Dual-reference adjustment mechanism: Through the linkage adjustment of azimuth and pitch, the receiver can accurately detect the optical path of the transmitter. The azimuth adjustment mechanism has an adjustment range of ±30° and the pitch adjustment mechanism has an adjustment range of ±15°, with an accuracy of ±0.5°.

[0027] 3. Weather-resistant optical design: Combination of low-temperature materials and coating technology ensures stable optical performance in -40°C environment.

[0028] 4. Modular expansion architecture: The combination of quick-release connecting rods and intelligent counterweights supports 10m underwater detection extension. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0030] Figure 1 It is a structural schematic diagram of the present invention.

[0031] Figure 2 Schematic diagram of the structure of the transmitter in the present invention.

[0032] Figure 3 It is a structural schematic diagram of the transmitting end bracket in the present invention.

[0033] Figure 4 for Figure 3 Schematic diagram of the top view structure.

[0034] Figure 5 It is a structural schematic diagram of the orientation adjustment mechanism in the present invention.

[0035] Figure 6 for Figure 5 Schematic diagram of the top view structure.

[0036] Figure 7 It is a structural schematic diagram of the pitch adjustment mechanism in the present invention.

[0037] Figure 8 for Figure 7 Schematic diagram of the side structure.

[0038] Figure 9 Schematic diagram of the structure of the first connecting rod in the present invention.

[0039] Figure 10 Schematic diagram of the structure of the receiving end in the present invention.

[0040] Figure 11 It is a structural schematic diagram of the receiving end bracket in the present invention.

[0041] Figure 12 for Figure 11 Schematic diagram of the top view structure.

[0042] Figure 13 This is a schematic diagram of the installation and adjustment of the present invention before use.

[0043] In the accompanying drawings: 1-transmitter bracket, 2-laser transmitting device, 3-laser receiving device, 4-receiving bracket, 5-reflector, 6-laser pen, 7-adjustment mechanism, 8-first connecting rod, 9-first handle screw, 10-first support leg, 11-transmitter mounting plate, 12-first level, 13-locking screw, 14-slewing bearing, 15-azimuth mechanism mounting plate, 16-handle, 17-handwheel, 18-angle adjustment platform, 19-first interface, 20-pitch mechanism frame, 21-pitch mechanism gearbox, 22-locking device, 23-aperture mechanism, 24-second connecting rod, 25-second support leg, 26-second handle screw, 27-height adjustment platform, 28-aperture, 29-aperture mechanism bracket, 30-second interface, 31-receiving bracket, 32-second level. DETAILED DESCRIPTION

[0044] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0045] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0046] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0047] The present invention will be further explained below with reference to specific embodiments.

[0048] See alsoFigures 1-13 An embodiment of the present invention provides an underwater laser detection bearing and adjustment device mounted on an ice surface, comprising a transmitter, a receiver, and a connecting belt, wherein the transmitter and the receiver are connected by the connecting belt. The transmitter comprises a transmitter bracket 1, an adjustment mechanism 7, a laser pen 6, and a laser emitting device 2.

[0049] The adjustment mechanism 7 includes an azimuth adjustment mechanism and a pitch adjustment mechanism. The pitch adjustment mechanism is arranged on the transmitting end bracket 1 through the azimuth adjustment mechanism, and one end of the pitch adjustment mechanism is connected to the laser emitting device 2 through a first connecting component, and the laser pen 6 is arranged on the other end of the pitch adjustment mechanism; the transmitting end bracket 1 includes a transmitting end mounting plate 11 and a first support member located below the transmitting end mounting plate 11, and a first level 12 is provided on the transmitting end mounting plate 11; the first support member includes a first leg provided at the bottom of the transmitting end mounting plate 11, and the first legs are provided with three legs, each of which is equipped with a first handle screw 9; the azimuth adjustment mechanism includes a slewing bearing 14 and an azimuth mechanism mounting plate 15, the azimuth mechanism mounting plate 15 is rotatably mounted on the transmitting end mounting plate 11 via a slewing bearing 14; the azimuth mechanism mounting plate 15 is also provided with a handle 16 and a locking screw 13; the pitch adjustment mechanism includes a pitch mechanism gearbox 21 provided on the azimuth mechanism mounting plate 15, and the pitch mechanism gearbox 21 is equipped with a pitch mechanism frame 20 and a handwheel 17, and the top of the pitch mechanism frame 20 has a mounting position for the laser pointer 6; the first connecting assembly includes a first connecting rod 8 and a first interface 19, the first interface 19 being provided at the end of the pitch mechanism frame 20 away from the laser pointer 6, and the first connecting rod 8 is connected to the first interface 19, and the first connecting rod 8 is also equipped with a locking device 22;

[0050] The receiving end includes a receiving end bracket 4, a reflector 5, an aperture mechanism 23 and a laser receiving device 3. The laser receiving device 3 is installed in the middle of the receiving end bracket 4 through a flange. The reflector 5 and the receiving end bracket 4 are connected by a second connecting component, and the center of the reflector 5 is coaxial with the center of the laser receiving device 3. The aperture mechanism 23 and the laser receiving device 3 are both arranged on the receiving end bracket 4. The laser pen 6 is pre-calibrated with the aperture mechanism 23 and cooperates with the adjustment mechanism 7 to adjust the optical path of the laser emitting device 2 so that the laser can irradiate the center position of the reflector 5; the laser pen 6 and the laser emitting device 2 are respectively installed at the upper and lower ends of the pitch adjustment mechanism, and by adjusting The reflector 5 is coated with a waterproof and corrosion-resistant film. The receiving-end bracket 4 includes a receiving-end mounting plate 31 and a second support member located below the receiving-end mounting plate 31, and a second level 32 is provided on the receiving-end mounting plate 31. The aperture mechanism 23 includes an aperture 28 and an aperture mechanism bracket 29 located on the receiving-end mounting plate 31, with a height adjustment platform 27 provided between the aperture 28 and the aperture mechanism bracket 29. The second support member includes three second legs 25 located at the bottom of the receiving-end mounting plate 31, each of which is equipped with a second handle screw 26.

[0051] The second connecting assembly includes a second interface 30 arranged below the receiving end mounting plate 31, and the second connecting rod 24 is connected to the second interface 30; the connecting belt is made of flexible material; the total weight of the transmitting end is less than 60kg, the total weight of the receiving end is less than 50kg, and both the transmitting end and the receiving end are made of low-temperature resistant materials.

[0052] In the embodiments of the present invention, the mounting system for the transmitter bracket 1 includes, but is not limited to, a tripod mount. Considering the unevenness of the ice surface in polar environments, a tripod mount is used for transmitter bracket 1. Tripod mounts offer stability and excellent load-bearing capacity, but other mounts can be used on smooth ice surfaces. The first leg 10 of the transmitter bracket 1 features three levels of angle adjustment. It is secured by a hinged locking mechanism and the first handle screw 9 adjusts the angle to accommodate varying terrain and adjusts the height of the mounting plate. The three levels of height adjustment for the first leg 10 are 541.8mm, 581.1mm, and 605.3mm, respectively.

[0053] Preferably, the main body material of the transmitting end bracket 1 is made of low-temperature resistant aluminum alloy (hardness HRB≥80 at -50°C), and the surface is anodized to enhance corrosion resistance.

[0054] Specifically, a quick-install connection interface is provided in the center of the transmitting end mounting plate 11, which can be quickly installed on the adjustment mechanism 7 without tools. The first connecting rod 8 adopts a quick-install and quick-disassemble design. The number of connecting rods can be determined according to the environment of the test site and the test requirements, and multiple sections can be quickly connected and assembled.

[0055] Specifically, a high-precision level (accuracy ±0.05 mm / m) is embedded in the edge of the transmitter mounting plate 11 to ensure that the transmitter is leveled as a whole.

[0056] The adjustment mechanism 7 is divided into an azimuth adjustment mechanism and a pitch adjustment mechanism, which is used to adjust the optical path of the laser at the transmitting end to accurately reach the center position of the reflector 5 at the receiving end, and locate the emission direction of the laser emitting device 2 under the ice surface through the emission direction of the laser pen 6 on the ice surface.

[0057] Specifically, the azimuth mechanism mounting plate 15 is rotatably mounted on the transmitting end mounting plate 11 through a slewing bearing 14. The horizontal angle of the transmitting light path can be adjusted by rotating the handle 16 in azimuth. After reaching the ideal position, it is locked by the locking screw 13 to prevent the movement of the azimuth mechanism mounting plate 15 from affecting the accuracy. The adjustment range of the azimuth adjustment mechanism is: ±30°.

[0058] Specifically, the entire pitch adjustment mechanism is installed on the azimuth rotation mechanism, and the pitch mechanism gear box 21 is rotated by the hand wheel 17 to adjust the pitch angle of the angle adjustment platform 18. The adjustment range of the pitch adjustment mechanism is: ±15°.

[0059] Preferably, the pitch mechanism gear box 21 is placed in the pitch mechanism frame 20, which ensures the stability and operation accuracy of the gear box.

[0060] Preferably, the lubricating oil of the azimuth adjustment mechanism and the pitch adjustment mechanism is low-temperature resistant grease, which reduces the friction resistance of the adjustment mechanism 7 and ensures the fine-tuning accuracy.

[0061] Furthermore, by adjusting the laser pen 6 to align with the pinhole aperture 28 device at the receiving end through the azimuth adjustment mechanism, the mounting brackets at both ends can be preliminarily positioned, and the pitch angle of the transmitting light path can be adjusted by rotating the pitch mechanism handwheel 17. Precise adjustment in two directions ensures that the receiving end can accurately receive the light path of the transmitting end.

[0062] The laser emitting assembly in this embodiment includes a laser pen 6 and a laser emitting device 2. The laser pen 6 is used for pre-calibration and emits visible laser light to the center of the receiving end aperture 28. The laser emitting device 2 is coaxially installed with the laser pen 6 and is fixed to the upper and lower ends of the pitch adjustment mechanism through a quick-release connecting rod (i.e., the first connecting component), and is linked through the adjustment mechanism 7.

[0063] Specifically, the quick-release connecting rod (i.e., the first connecting component) utilizes a tool-free plug-in structure that conforms to the ISO 12240-4 standard interface. Each section is 1 meter long and can be expanded to 10 sections (total length 10 meters). The interface features a built-in spring-loaded locking pin with a tensile strength of 500N or greater after insertion, ensuring a secure connection even under vibration on the ice.

[0064] Specifically, under the premise of ensuring structural height and accuracy, the total weight of the transmitter is less than 60kg, achieving lightweight.

[0065] In this embodiment, the receiving-end bracket 4 has the same structural form as the transmitting-end bracket 1. The second interface 30 and the aperture mechanism 23 are mounted on the receiving-end mounting plate 31. A second level 32 is also mounted on the receiving-end mounting plate 31 for leveling the entire mechanism. The laser receiving device 3 is mounted in the middle of the receiving-end bracket 4 via a flange, and receives the transmitting-end laser signal via the reflector 5 below. The reflector 5 is fixed to the connecting rod. Through design and installation, the center of the reflector 5 is ensured to be aligned with the center of the laser receiving device 3, ensuring that the light path emitted by the transmitting end can accurately enter the laser receiving device 3 through the reflector 5. The connecting rod is installed through the connecting rod interface on the bracket, and the reflector 5 is extended deep into the ice surface by connecting multiple connecting rods. The second connecting component used at the receiving end is the same as the first connecting component at the transmitting end, making it easy to install and use.

[0066] Specifically, the structure of the receiving end bracket 4 is consistent with that of the transmitting end bracket 1, the second leg 25 supports three-level angle adjustment, and the material is the same low-temperature resistant aluminum alloy; the laser receiving device 3 is fixed at the center of the receiving end mounting plate 31, the aperture mechanism 23 is offset on a second leg 25 of the receiving end mounting plate 31, and the second interface 30 is placed at the other end of the center circle diameter of the receiving end mounting plate 31 to achieve balance. A second spirit level 32 is configured on the edge of the receiving end mounting plate 31 to adjust the balance of the tripod legs.

[0067] Specifically, the aperture mechanism 23 includes an aperture mechanism bracket 29, an aperture 28 height adjustment platform 27, and the aperture 28. The aperture mechanism bracket 29 is made of lightweight and durable material and is fixed to the receiving end mounting plate 31. The aperture 28 height adjustment platform 27 is equipped with a height adjustment slide driven by a manual knob. The aperture 28 has an adjustable aperture and an involute edge design to reduce diffraction effects.

[0068] Preferably, the reflector 5 is coated with a multi-layer composite film with a reflectivity of ≥98.5% and an annual attenuation rate of <0.5% in an environment of -40°C. The mirror is rigidly connected to the laser receiving device 3 via a flange, and the coaxiality error between the center of the laser receiving device 3 and the center of the reflector 5 is <0.01 mrad.

[0069] Preferably, the lubricating oil of the height adjustment platform 27 is low-temperature resistant grease to reduce the friction resistance of the adjustment mechanism 7 and ensure fine-tuning accuracy.

[0070] Specifically, under the premise of ensuring structural height and accuracy, the total weight of the receiving end is less than 50kg, achieving lightweight.

[0071] In this embodiment, the laser detection load adjustment device pre-installed reference Figure 13Before the device is actually used, preliminary installation and adjustment can be carried out on the ground. The laser emitting device 2 and the emitting mirror can be directly installed on the connecting rod interface without passing through the connecting rod. After the upper and lower lasers are aligned through the adjustment mechanisms at both ends, the status of each mechanism is solidified. After the connecting rod is installed on site, fine-tuning can be performed through gaskets to align the upper and lower light paths.

[0072] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An underwater laser detection bearing and adjustment device mounted on an ice surface, comprising a transmitting end, a receiving end, and a connecting belt, wherein the transmitting end and the receiving end are connected by the connecting belt, characterized in that: The transmitting end comprises a transmitting end bracket (1), an adjusting mechanism (7), a laser pen (6) and a laser transmitting device (2); The adjustment mechanism (7) includes an azimuth adjustment mechanism and a pitch adjustment mechanism, the pitch adjustment mechanism is arranged on the emission end bracket (1) through the azimuth adjustment mechanism, and one end of the pitch adjustment mechanism is connected to the laser emitting device (2) through a first connecting component, and the laser pen (6) is arranged on the other end of the pitch adjustment mechanism; The receiving end includes a receiving end bracket (4), a reflector (5), an aperture mechanism (23) and a laser receiving device (3). The laser receiving device (3) is installed in the middle of the receiving end bracket (4) through a flange. The reflector (5) and the receiving end bracket (4) are connected through a second connecting component, and the center of the reflector (5) is coaxial with the center of the laser receiving device (3). The aperture mechanism (23) and the laser receiving device (3) are both arranged on the receiving end bracket (4). The laser pen (6) is aligned with the aperture mechanism (23) for pre-calibration, and cooperates with the adjustment mechanism (7) to adjust the optical path of the laser emitting device (2) so that the laser can irradiate the center position of the reflector (5).

2. The underwater laser detection load adjustment device mounted on the ice surface according to claim 1 is characterized in that: The transmitting end bracket (1) comprises a transmitting end mounting plate (11) and a first support member located below the transmitting end mounting plate (11), and a first level (12) is provided on the transmitting end mounting plate (11).

3. The underwater laser detection load-adjusting device mounted on the ice surface according to claim 2, characterized in that: The first support member comprises a first support leg arranged at the bottom of the launch end mounting plate (11), and there are three first support legs, each of which is equipped with a first handle screw (9).

4. The underwater laser detection load-adjusting device mounted on the ice surface according to claim 2, characterized in that: The azimuth adjustment mechanism (7) comprises a slewing bearing (14) and an azimuth mechanism mounting plate (15), wherein the azimuth mechanism mounting plate (15) is rotatably mounted on the transmitting end mounting plate (11) via the slewing bearing (14); The orientation mechanism mounting plate (15) is also provided with a handle (16) and a locking screw (13).

5. The underwater laser detection load-adjusting device mounted on the ice surface according to claim 4 is characterized in that: The pitch adjustment mechanism (7) includes a pitch mechanism gear box (21) arranged on an azimuth mechanism mounting plate (15), and the pitch mechanism gear box (21) is equipped with a pitch mechanism frame (20) and a hand wheel (17), and the top of the pitch mechanism frame (20) has a mounting position for a laser pen (6); The first connecting assembly comprises a first connecting rod (8) and a first interface (19), wherein the first interface (19) is arranged at an end of the pitch mechanism frame (20) away from the laser pen (6), and the first connecting rod (8) is connected to the first interface (19), and the first connecting rod (8) is also equipped with a locking device (22).

6. The underwater laser detection load-adjusting device mounted on the ice surface according to claim 1, characterized in that: The surface of the reflector (5) is plated with a waterproof and corrosion-resistant film layer.

7. The underwater laser detection load-adjusting device mounted on the ice surface according to claim 1, characterized in that: The receiving end bracket (4) comprises a receiving end mounting plate (31) and a second support member located below the receiving end mounting plate (31), and a second level (32) is provided on the receiving end mounting plate (31).

8. The underwater laser detection load-adjusting device mounted on the ice surface according to claim 7, characterized in that: The aperture mechanism (23) includes an aperture (28) and an aperture mechanism bracket (29) arranged on a receiving end mounting plate (31), and a height adjustment platform (27) is arranged between the aperture (28) and the aperture mechanism bracket (29); The second connection assembly comprises a second interface (30) arranged below the receiving end mounting plate (31), and a second connecting rod (24) is connected to the second interface (30).

9. The underwater laser detection load-adjusting device mounted on the ice surface according to claim 1, characterized in that: The connecting belt is made of flexible material.

10. The underwater laser detection load-adjusting device mounted on the ice surface according to claim 1, characterized in that: The total weight of the transmitting end is less than 60 kg, the total weight of the receiving end is less than 50 kg, and both the transmitting end and the receiving end are made of low-temperature resistant materials.

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