Underwater positioning device and positioning method for underwater acoustic transducer

Abstract

The invention discloses an underwater positioning device and method for an underwater acoustic transducer. The underwater positioning device comprises positioning mechanisms installed on the tops of the two opposite side faces of a water tank, a movable mechanism is connected between the positioning mechanisms on the two sides, a lifting mechanism is connected to the movable mechanism in a sliding mode, and the transducer is installed on the lower portion of the lifting mechanism; fixing frames are arranged on the two sides of the positioning mechanism, and a tape is connected between the fixing frames on the two sides. Fixing frames are arranged on the two sides of the movable mechanism, and the movable mechanism is installed on the positioning mechanisms on the two sides of the water tank through the fixing frames on the two sides. The measuring tape can be laid on the top of the water tank, so that the follow-up X-axis installation precision of the transducer is improved, the multiple fixing frames can be installed on the two sides of the frame of the top of the water tank, the distance between the fixing frames on the two sides can be adjusted through the length of the water tank, and after the positions of the fixing frames after movement are determined, the fixing frames can be fixed. The first clamping block can be attached to the surface of the water tank by rotating the first lead screw, and the fixing frame can be fixedly installed on the surface of the water tank.

Description

Technical Field

[0001] The present invention relates to an underwater positioning device and a positioning method, and in particular to an underwater positioning device and a positioning method for an underwater acoustic transducer. Background Art

[0002] Hydroacoustic detection uses the ocean information carried by underwater sound waves to explore the ocean. Therefore, understanding the propagation characteristics of sound waves in water helps to understand the basic principles of underwater detection and better develop hydroacoustic detection technology. In the study of underwater sound wave propagation characteristics, the most important part is the experimental verification of theoretical research results. Hydroacoustic propagation experiments are mostly carried out in laboratory tanks or pools. How to accurately locate the position of the hydroacoustic transducer in the tank is an important part of ensuring the quality of the experiment.

[0003] In current water tank sound propagation experiments, a three-axis motion platform is generally used to position the underwater acoustic transducer. However, the size of the mechanical parts is designed according to the size of the pool. Once the pool is no longer in use or needs to be upgraded and enlarged, the equipment cannot be used. Summary of the invention

[0004] Purpose of the invention: The purpose of the present invention is to provide an underwater positioning device and positioning method for an underwater acoustic transducer, which can be installed on the surface of a water tank of various sizes so that the underwater acoustic transducer can be accurately positioned.

[0005] Technical solution: The present invention includes a positioning mechanism installed on the top of two opposite sides of the sink, a movable mechanism is connected between the positioning mechanisms on both sides, a lifting mechanism is slidably connected to the movable mechanism, and a transducer is installed at the bottom of the lifting mechanism; fixed frames are provided on both sides of the positioning mechanism, and a tape measure is connected between the fixed frames on both sides; fixed frames are provided on both sides of the movable mechanism, and the movable mechanism is installed on the positioning mechanisms on both sides of the sink through the fixed frames on both sides.

[0006] A casing is fixed on the top of the fixed frame, a rotating shaft is rotatably connected inside the casing, a tape measure is wound on the outside of the rotating shaft, a guide frame is provided on one side of the fixed frame at the bottom of the casing, the guide frame is located on the side opposite to the fixed frames on both sides, and the tape measure in the casing passes through the guide frame and is fixed to the fixed frame on the other side.

[0007] One side of the fixing frame is rotatably connected with a first screw rod, and a first clamping block is provided at the end of the first screw rod located inside the fixing frame. The first screw rod is rotated to make the first clamping block fit the surface of the water tank and lock it, thereby locking the positioning mechanism on the surface of the water tank.

[0008] The outer side of the fixing frame is rotatably connected to a second screw rod, and the end of the second screw rod extending into the fixing frame is fixedly connected to a second clamping block, and rollers are correspondingly installed on the other side of the second clamping block and the other end of the fixing frame. The fixing frames on both sides are respectively placed on both sides of the top of the sink frame, and the roller on one side is made to fit the inner wall of the sink. Then, the second screw rod is rotated to make the second clamping block drive the roller on the other side to fit the surface of the sink, so that the fixing frame can move on the surface of the sink.

[0009] A convex plate is arranged on the top of the fixing frame, and a retractable mounting plate and a scale plate are connected between the convex plates on the tops of the fixing frames on both sides.

[0010] The top of the fixing frame is rotatably connected to a third screw rod, and the third screw rod is rotated so that the bottom end of the third screw rod is closely fitted with the top of the water tank, so that the fixing frame is limited by friction.

[0011] The lifting mechanism comprises a sliding block, which is slidably connected to the mounting plate. A side plate is fixed to one side of the sliding block, a movable sleeve is fixed to the top of the side plate, and a scale rod is passed through the inside of the movable sleeve.

[0012] A limiting structure is installed at the lower part of the scale rod, and the transducer is fixed by the limiting mechanism.

[0013] The limiting mechanism comprises a mounting frame, which is mounted on the lower part of the scale rod. A fifth screw rod is threaded through the surface of the mounting frame, one end of the fifth screw rod is rotatably connected to a third clamping block, and a transducer is installed between the mounting frame and the third clamping block.

[0014] A positioning method for an underwater positioning device of an underwater acoustic transducer comprises the following steps:

[0015] S1, the positioning mechanism is clamped on both sides of the top of the sink through the fixing frames on both sides. During this period, the tape measure is stretched and laid on the top of the sink frame. After the position of the fixing frame is determined, the first screw is rotated to lock the positioning mechanism on the surface of the sink;

[0016] S2. After the fixing frame is installed, place the fixing frames on both sides on the top of the sink frame, and fit the rollers to the surface of the sink. During the movement of the fixing frame, confirm the installation position of the transducer X-axis by the scale on the surface of the tape measure. After the position of the fixing frame is determined, rotate the third screw to fix the fixing frame.

[0017] S3. Slidingly connect the slider and the mounting plate, determine the installation position of the Y-axis of the transducer by observing the scales on the slider and the scale plate surface, and adjust the scale rod to determine the fixed position of the Z-axis of the transducer.

[0018] Beneficial effects: The present invention has the following advantages:

[0019] (1) The present invention enables a tape measure to be laid on the top of the sink, thereby improving the subsequent X-axis installation accuracy of the transducer. Multiple fixing frames can be installed on both sides of the top frame of the sink. At this time, the distance between the fixing frames on both sides can be adjusted according to the length of the sink. During this period, the tape measure will be stretched so that the tape measure can be laid on the top of the sink frame. After the position of the fixing frame after movement is determined, the first screw rod can be rotated to make the first clamping block fit the surface of the sink, so that the fixing frame can be installed and fixed to the surface of the sink;

[0020] (2) By enabling the device to be installed on the top of sinks of different lengths and widths, after the fixing frame is installed, the two fixing frames are respectively placed on both sides of the top of the sink frame, so that the roller on one side fits with the inner wall of the sink, and then the second screw is rotated so that the second clamping block drives the roller on the other side to fit with the surface of the sink, so that the fixing frame can move on the surface of the sink. During the movement of the fixing frame, the subsequent X-axis installation position of the transducer can be confirmed by the scale on the surface of the tape measure. At the same time, according to the different widths of the sink, the installation plate and the scale plate can slide on the surface of the convex plate on the other side, so that the fixing frames on both sides can be normally installed on the surface of the top frame of the sink, thereby adapting to sinks of different sizes and enabling the transducer to obtain a precise positioning effect;

[0021] (3) The present invention enables the transducer to be freely adjusted and installed and fixed on the Y-axis and the Z-axis. The slider can move on the surface of the mounting plate. By observing the scale positions of the slider and the scale plate surface, the subsequent Y-axis installation position of the transducer can be determined. By rotating the fourth screw, the slider can be limited by friction. After that, the scale rod is adjusted to the position inside the movable sleeve, and the scale rod surface is observed to determine the subsequent fixed position of the Z-axis of the transducer. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0023] Figure 2 It is a schematic diagram of a partial three-dimensional structure of the present invention;

[0024] Figure 3 It is a schematic diagram of the local structure of the present invention;

[0025] Figure 4 It is a schematic cross-sectional structure diagram of the positioning mechanism in the present invention;

[0026] Figure 5 It is a structural schematic diagram of the activity mechanism in the present invention;

[0027] Figure 6 It is a structural schematic diagram of the lifting mechanism in the present invention;

[0028] Figure 7It is a schematic cross-sectional structure diagram of the lifting mechanism in the present invention. DETAILED DESCRIPTION

[0029] The present invention will be further described below in conjunction with the accompanying drawings.

[0030] like Figure 1 to Figure 7 As shown in FIG. 1 , the underwater positioning device for an underwater acoustic transducer of the present invention comprises a positioning mechanism 1 installed on the top of two opposite sides of a water tank, a movable mechanism 2 is connected between the positioning mechanisms 1 on both sides, and a lifting mechanism 3 is slidably connected to the movable mechanism 2, such as Figures 1 to 3 As shown, a transducer is installed at the lower part of the lifting mechanism 3.

[0031] like Figure 4 As shown, both sides of the positioning mechanism 1 are provided with a fixed frame 101, and the positioning mechanism 1 is clamped on the top of the water tank through the fixed frames 101 on both sides, and the fixed frames 101 on both sides are respectively clamped on both sides of the top of the water tank, wherein a casing 102 is fixed on the top of the fixed frame 101 on one side, and a rotating shaft 103 is rotatably connected inside the casing 102, and a tape measure 104 is wound on the outer side of the rotating shaft 103, and an opening is provided on the surface of the casing 102, and a guide frame 107 is provided on one side of the fixed frame 101 at the bottom of the casing 102, and the guide frame 107 is located on the opposite side of the fixed frames 101 on both sides, and the tape measure 104 in the casing 102 passes through the opening on the surface of the casing 102 and the guide frame 107 and is fixed to the fixed frame 101 on the other side. The guide frame 107 can guide the tape measure 104, so that the tape measure 104 will not be tilted upward when it is close to the surface of the casing 102, so that the tape measure 104 can fit the surface of the water tank. A handle 108 is provided at the end of the rotating shaft 103, and the rotating shaft 103 can be driven to rotate by the movable operating handle 108, thereby realizing the winding operation of the tape measure 104. A first screw rod 105 is rotatably connected to one side of the fixed frame 101, and a first clamping block 106 is provided at the end of the first screw rod 105 located inside the fixed frame 101. When the positioning mechanism 1 is clamped on the top of the sink through the fixed frames 101 on both sides, the distance between the fixed frames 101 on both sides can be adjusted according to the length of the sink. During this period, the tape measure 104 is stretched and laid on the top of the sink frame. After the position of the fixed frame 101 is determined, the first screw rod 105 is rotated to make the first clamping block 106 fit the surface of the sink and lock it, thereby locking the positioning mechanism 1 on the surface of the sink.

[0032] like Figure 5As shown, fixed frames 201 are provided on both sides of the movable mechanism 2, and the movable mechanism 2 is installed on the positioning mechanism 1 on both sides of the sink through the fixed frames 201 on both sides. The outer sides of the fixed frames 201 on both sides are rotatably connected with second screw rods 202, and the ends of the second screw rods 202 extending into the interior of the fixed frame 201 are fixedly connected with second clamping blocks 203, and a group of rollers 204 are correspondingly installed on the other side of the second clamping block 203 and the other end of the fixed frame 201, and a convex plate 205 is provided on the top of the fixed frame 201, and a retractable mounting plate 207 and a scale plate 208 are connected between the convex plates 205 on the tops of the fixed frames 201 on both sides, and a third screw rod 206 is also rotatably connected to the top of the fixed frame 201.

[0033] After the fixing frame 101 is installed, the fixing frames 201 on both sides are placed on both sides of the top of the water tank frame, and the roller 204 on one side is fitted with the inner wall of the water tank, and then the second screw rod 202 is rotated to make the second block 203 drive the roller 204 on the other side to fit with the surface of the water tank, so that the fixing frame 201 can move on the surface of the water tank. During the movement of the fixing frame 201, the subsequent installation position of the transducer on the X axis can be confirmed by the scale on the surface of the tape measure 104. At the same time, according to the different widths of the water tank, the mounting plate 207 and the scale plate 208 can slide on the surface of the convex plate 205 on the other side, so that the fixing frames 201 on both sides can be normally installed on the surface of the top frame of the water tank, so as to adapt to different sizes of water tanks and enable the transducer to obtain accurate positioning effect. After the position of the fixing frame 201 is determined, the third screw rod 206 is rotated to make the bottom end of the third screw rod 206 fit closely with the top of the water tank, so that the fixing frame 201 is limited by friction.

[0034] like Figure 6 and Figure 7 As shown, the lifting mechanism 3 includes a slider 301, which is slidably connected to the mounting plate 207, a fourth screw rod 302 is rotatably connected to the top of the slider 301, a side plate 303 is fixed to one side of the slider 301, a movable sleeve 304 is fixed to the top of the side plate, a scale rod 305 is penetrated inside the movable sleeve 304, and a fastening bolt 309 is threadedly penetrated on the surface of the movable sleeve 304. After adjusting the position of the scale rod 305, tighten the fastening bolt 309 so that the scale rod 305 can achieve a limiting effect through friction. A limiting structure is installed at the lower part of the scale rod 305, and the transducer is fixed by the limiting mechanism. The slider 301 can move on the surface of the mounting plate 207. By observing the scale positions of the slider 301 and the scale plate 208, the installation position of the transducer Y-axis can be determined, and the fourth screw 302 can be rotated to limit the slider 301 through friction. Then, the position of the scale rod 305 inside the movable sleeve 304 is adjusted, and the scale on the surface of the scale rod 305 is observed to determine the subsequent fixed position of the transducer Z-axis.

[0035] The limiting mechanism includes a mounting frame 306, which is mounted on the lower part of the scale rod 305. A fifth screw rod 307 is threaded through the surface of the mounting frame 306, and one end of the fifth screw rod 307 is rotatably connected to a third clamping block 308. The transducer is placed between the mounting frame 306 and the third clamping block 308, and the fifth screw rod 307 is rotated to move the third clamping block 308 toward the transducer, thereby fixing the transducer.

[0036] Pointers are fixed on the surfaces of the movable sleeve 304, the slider 301 and the fixed frame 201; through the setting of the pointer, the operator can more accurately observe the expected installation position of the transducer, thereby improving the detection accuracy.

[0037] The positioning method of the underwater positioning device for the underwater acoustic transducer of the present invention comprises the following steps:

[0038] S1, the positioning mechanism 1 is clamped on the top of the sink through the fixing frames 101 on both sides, and the distance between the fixing frames on both sides is adjusted according to the length of the sink. During this period, the tape measure 104 is stretched and laid on the top of the sink frame. After the position of the fixing frame 101 is determined, the first screw rod 105 is rotated to make the first clamping block 106 fit the surface of the sink and lock it, so that the positioning mechanism 1 is locked on the surface of the sink;

[0039] S2. After the fixing frame 101 is installed, the fixing frames 201 on both sides are placed on both sides of the top of the sink frame, and the roller 204 on one side is fitted with the inner wall of the sink. Then, the second screw rod 202 is rotated to make the second clamping block 203 drive the roller 204 on the other side to fit with the surface of the sink, so that the fixing frame 201 can move on the surface of the sink. During the movement of the fixing frame 201, the subsequent X-axis installation position of the transducer can be confirmed by the scale on the surface of the tape measure 104. At the same time, according to the different widths of the sink, the mounting plate 207 and the scale plate 208 can slide on the surface of the convex plate 205 on the other side, so that the fixing frames 201 on both sides can be normally installed on the surface of the top frame of the sink, so as to adapt to sinks of different sizes; after the position of the fixing frame 201 is determined, the third screw rod 206 is rotated to make the bottom end of the third screw rod 206 fit closely with the top of the sink, so that the fixing frame 201 is limited by friction;

[0040] S3. Slidingly connect the slider 301 to the mounting plate 207. By observing the scale positions on the slider 301 and the scale plate 208, the installation position of the transducer Y-axis can be determined. Rotate the fourth screw 302 to limit the slider 301 through friction. Then adjust the position of the scale rod 305 inside the movable sleeve 304. Observe the scale on the surface of the scale rod 305 to determine the subsequent fixed position of the transducer Z-axis.

Claims

1. An underwater positioning device for an underwater acoustic transducer, characterized in that: It comprises positioning mechanisms installed on the tops of two opposite sides of the water tank, a movable mechanism is connected between the positioning mechanisms on both sides, a lifting mechanism is slidably connected to the movable mechanism, and a transducer is installed at the bottom of the lifting mechanism; fixed frames are provided on both sides of the positioning mechanism, and a tape measure is connected between the fixed frames on both sides; fixed frames are provided on both sides of the movable mechanism, and the movable mechanism is installed on the positioning mechanisms on both sides of the water tank through the fixed frames on both sides.

2. The underwater positioning device for an underwater acoustic transducer according to claim 1, characterized in that: A casing is fixed on the top of the fixed frame, a rotating shaft is rotatably connected inside the casing, a tape measure is wound on the outside of the rotating shaft, a guide frame is provided on one side of the fixed frame at the bottom of the casing, the guide frame is located on the side opposite to the fixed frames on both sides, and the tape measure in the casing passes through the guide frame and is fixed to the fixed frame on the other side.

3. The underwater positioning device for an underwater acoustic transducer according to claim 2, characterized in that: A first screw rod is rotatably connected to one side of the fixing frame, and a first clamping block is arranged at the end of the first screw rod located inside the fixing frame.

4. The underwater positioning device for an underwater acoustic transducer according to claim 1, characterized in that: The outer side of the fixing frame is rotatably connected with a second screw rod, the end of the second screw rod extending into the fixing frame is fixedly connected with a second clamping block, and the other side of the second clamping block and the other end of the fixing frame are correspondingly installed with rollers.

5. The underwater positioning device for an underwater acoustic transducer according to claim 4, characterized in that: A convex plate is arranged on the top of the fixing frame, and a retractable mounting plate and a scale plate are connected between the convex plates on the tops of the fixing frames on both sides.

6. The underwater positioning device for an underwater acoustic transducer according to claim 4, characterized in that: The top of the fixing frame is rotatably connected with a third screw rod.

7. The underwater positioning device for an underwater acoustic transducer according to claim 1, characterized in that: The lifting mechanism comprises a sliding block, which is slidably connected to the mounting plate. A side plate is fixed to one side of the sliding block, a movable sleeve is fixed to the top of the side plate, and a scale rod is passed through the inside of the movable sleeve.

8. The underwater positioning device for an underwater acoustic transducer according to claim 7, characterized in that: A limiting structure is installed at the lower part of the scale rod.

9. The underwater positioning device for an underwater acoustic transducer according to claim 8, characterized in that: The limiting mechanism comprises a mounting frame, which is mounted on the lower part of the scale rod. A fifth screw rod is threaded through the surface of the mounting frame, one end of the fifth screw rod is rotatably connected to a third clamping block, and a transducer is installed between the mounting frame and the third clamping block.

10. A positioning method for an underwater positioning device for an underwater acoustic transducer based on any one of claims 1 to 9, characterized in that: The following steps are involved: S1, the positioning mechanism is clamped on both sides of the top of the sink through the fixing frames on both sides. During this period, the tape measure is stretched and laid on the top of the sink frame. After the position of the fixing frame is determined, the first screw is rotated to lock the positioning mechanism on the surface of the sink; S2. After the fixing frame is installed, place the fixing frames on both sides on the top of the sink frame, and fit the rollers to the surface of the sink. During the movement of the fixing frame, confirm the installation position of the transducer X-axis by the scale on the surface of the tape measure. After the position of the fixing frame is determined, rotate the third screw to fix the fixing frame. S3. Slidingly connect the slider and the mounting plate, determine the installation position of the Y-axis of the transducer by observing the scales on the slider and the scale plate surface, and adjust the scale rod to determine the fixed position of the Z-axis of the transducer.

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