A calibration detection device for ultrasonic depth sounder

Abstract

The invention provides a calibration detection device for an ultrasonic depth sounder, which relates to the technical field of ultrasonic depth sounding and comprises: a base and a depth sounder; a group of brackets are fixedly installed on the top of the base, a limiting hole is provided at the bottom of a second rod, and a limiting rod at the top of the first rod is plugged and installed on the limiting hole at the bottom of the second rod, and a reflection calibration plate is fixedly installed on the outer side of the first rod at the bottom; the second rod and the first rod are automatically self-locked after being in a 180-degree unfolded position, so that the depth sounder is always in a vertical upper position of the bottom reflection calibration plate, so as to improve the calibration accuracy of the device, and the device has better assembly adjustability; the problem that it is difficult to quickly locate and disassemble the depth sounder, which is easy to affect the work efficiency, and the device is difficult to compare and calibrate a deeper position, when the calibration rod is too long, the operation is inconvenient, and when a rope is used to calibrate a deeper position, the depth sounder is easy to be not on the same vertical line as the calibration plate, which affects the standard accuracy of the device.

Description

Technical Field

[0001] The invention relates to the technical field of ultrasonic depth sounding, and in particular to a calibration detection device for an ultrasonic depth sounder. Background Art

[0002] The ultrasonic depth sounder uses water as the ultrasonic medium. When measuring depth, the ultrasonic transducer is placed at a certain position underwater. The depth from the transducer to the bottom of the water can be calculated based on the propagation speed of the ultrasonic wave in the water and the time interval from the ultrasonic signal being emitted to being received. The propagation speed of the ultrasonic wave in the water quality of different regions has a certain deviation, so the ultrasonic depth sounder needs to be calibrated.

[0003] As for the existing calibration and detection device of the ultrasonic depth sounder, it is not easy to quickly locate and disassemble the depth sounder, which easily affects the work efficiency. In addition, the device is not easy to compare and calibrate at a deeper position. When the calibration rod is too long, the operation is inconvenient. When a rope is used to calibrate a deeper position, the depth sounder is likely to be on a different vertical line from the calibration plate, which affects the standard accuracy of the device. Summary of the invention

[0004] The disclosed embodiment relates to a calibration detection device for an ultrasonic depth sounder, which uses a limit rod to automatically self-lock the second rod and the first rod when they are in the unfolded 180-degree position, so that the depth sounder is always in a vertically upper position of the reflection calibration plate outside the bottom first rod, so as to improve the calibration accuracy of the device, and the device has better assembly adjustability, which is convenient for calibration at different depths as needed, further improving the calibration accuracy of the device.

[0005] In a first aspect of the present disclosure, there is provided a calibration detection device for an ultrasonic depth sounder, specifically comprising: a base and a depth sounder;

[0006] A group of brackets are fixedly installed on the top of the base, a group of magnetic plates are fixedly installed on the outer ends of the brackets, a group of fixing plates are fixedly installed on the bottom of the base, a motor is fixedly installed on the outer ends of the fixing plates, a first gear is fixedly installed on the transmission shaft of the motor, a group of moving frames are slidably installed on the left end of the base, and two groups of plugging rods are fixedly installed on the left end of the moving frame, a depth sounder is plugged and installed on the outer end of the base, a cable is connected to the top of the depth sounder, a group of jacks are respectively opened at both ends of the depth sounder, and the plugging rods at the left end of the moving frame are respectively plugged and installed on the jacks at both ends of the depth sounder, and a calibration rod group is also slidably plugged on the base, and the calibration rod group is The rod group includes a first rod member, a second rod member and a threaded rod. The outer ends of the first rod member and the second rod member are provided with scale lines. The first rod member and the second rod member are alternately arranged, and the adjacent first rod member and the second rod member rotate together. The first rod member and the second rod member are installed and connected in the same way, and the first rod member and the second rod member are symmetrical structures. A limiting rod is slidably installed on the top of the first rod member, and an iron column is fixedly installed on the outer end of the limiting rod. A limiting hole is opened at the bottom of the second rod member, and the limiting rod at the top of the first rod member is plugged and installed on the limiting hole at the bottom of the second rod member. A reflection calibration plate is fixedly installed on the outer side of the bottom first rod member.

[0007] In at least some embodiments, a group of first elastic members are respectively sleeved and installed on the fixed rods at the left end of the base, and the bottom ends of the first elastic members are respectively in contact with the top surfaces of the connecting plates on the movable frame.

[0008] In at least some embodiments, a synchronous wheel is fixedly mounted on the outer end of the first gear, a synchronous wheel is fixedly mounted on the outer end of the second gear, and the first gear and the second gear are connected together through a synchronous belt transmission.

[0009] In at least some embodiments, two sets of guide grooves are formed on the base, and the front and rear ends of the first rod are respectively fixedly connected with guide blocks, and the guide blocks at the front and rear ends of the first rod are respectively slidably mounted on the guide grooves of the base.

[0010] In at least some embodiments, a group of threaded holes are formed at the top of the first rod, a group of docking holes are formed at the bottom of the second rod, and the threaded rod passes through the docking holes at the bottom of the second rod and is threadedly installed on the threaded holes at the top of the first rod.

[0011] In at least some embodiments, two sets of fixing rods are fixedly installed on the left end of the base, and a set of connecting plates are fixedly installed on both ends of the movable frame. The connecting plates are provided with sliding holes, and the sliding holes of the connecting plates at both ends of the movable frame are respectively slidably installed on the fixing rods at the left end of the base.

[0012] In at least some embodiments, a group of inner slide grooves are formed at the top of the first rod, a group of sliding shafts are fixedly mounted on the limiting rod, and the sliding shafts on the limiting rod are slidably mounted in the inner slide grooves at the top of the first rod.

[0013] In at least some embodiments, a rack is fixedly mounted on the front end of the first rod, a second gear is rotatably mounted on the bottom of the fixed plate, and the first gear and the second gear are respectively meshed and transmission-connected with the rack at the front end of the first rod.

[0014] In at least some embodiments, a group of second elastic members are installed in the inner slide groove at the top of the first rod, and the inner ends of the second elastic members are in contact with the outer end surface of the sliding shaft on the limiting rod.

[0015] In at least some embodiments, two groups of positioning grooves are opened at the left end of the base, and a group of positioning blocks are fixedly connected to the front and rear ends of the depth sounder respectively, and the positioning blocks at the front and rear ends of the depth sounder are plugged and installed in the positioning grooves at the left end of the base.

[0016] The present invention provides a calibration detection device for an ultrasonic depth sounder, which has the following beneficial effects:

[0017] The present invention uses a movable frame to facilitate rapid positioning and disassembly of the depth sounder, and cooperates with the reflection calibration plate to measure the time interval from the emission of ultrasonic waves in different water qualities to the reception, so that the device has better working efficiency; the first gear cooperates with the second gear to play an auxiliary guiding driving role on the calibration rod group, so as to perform positioning calibration at different depths, thereby improving the use efficiency of the device; the second rod and the first rod are automatically self-locked after being in the unfolded 180-degree position through the limit rod, so that the depth sounder is always in the vertical upper position of the reflection calibration plate outside the bottom first rod, so as to improve the calibration accuracy of the device, and the device has better assembly adjustability, which is convenient for calibration of different depths according to needs, further improving the calibration accuracy of the device, and when the device is used, under the action of the magnetic plate, the iron column drives the limit rod to automatically move outward, so that the second rod and the first rod are folded and stored, so that the device has better linkage, and the ultrasonic propagation velocity deviation in water quality of water bodies in different regions is calculated according to the propagation velocity of ultrasonic waves in water and the time interval from the emission of ultrasonic signals to the reception, and the ultrasonic depth sounder has been calibrated.

[0018] In addition, the sliding holes of the connecting plates at both ends of the mobile frame are respectively slidably installed on the fixed rod at the left end of the base, and the mobile frame is pulled upward to plug and install the positioning blocks at the front and rear ends of the depth sounder on the positioning grooves at the left end of the base. After the depth sounder moves to the fixed position, the mobile frame is released, and under the action of the first elastic member on the fixed rod, the mobile frame moves downward, and the plugging rod at the left end of the mobile frame is respectively plugged and installed on the jacks at both ends of the depth sounder, so that the depth sounder of the device is easy to quickly locate and disassemble, and cooperates with the reflection calibration plate outside the first rod member at the bottom to measure the time interval from the emission to the reception of ultrasonic waves in different water qualities, and the depth sounder is always placed on the vertical top of the reflection calibration plate outside the first rod member at the bottom, so that the device has better working efficiency.

[0019] In addition, the guide blocks at the front and rear ends of the first rod are respectively slidably installed on the guide grooves of the base, and the first gear and the second gear are respectively meshed and connected with the rack at the front end of the first rod, and the first gear and the second gear are connected together through a synchronous belt drive. The motor drives the first gear and the second gear to rotate, so as to drive the first rod and the second rod to move downward in sequence, which plays an auxiliary guiding drive role for the calibration rod group, so as to perform positioning calibration at different depths, thereby improving the use efficiency of the device.

[0020] In addition, the threaded rod passes through the docking hole at the bottom of the second rod and is threadedly installed on the threaded hole at the top of the first rod, the adjacent first rod and the second rod rotate together, and the first rod and the second rod are easy to assemble quickly, the motor drives the first rod and the second rod to move downward in sequence through the first gear and the second gear, the sliding shaft on the limiting rod is slidably installed in the inner sliding groove at the top of the first rod, and when the second rod and the first rod are in a vertical state, under the action of the second elastic member in the inner sliding groove, the limiting rod at the top of the first rod is plugged and installed on the limiting hole at the bottom of the second rod, so that the second rod and the first The rod is automatically self-locked after being in the unfolded 180-degree position, so that the depth sounder is always in a vertical upper position of the reflection calibration plate outside the first rod at the bottom, so as to improve the calibration accuracy of the device, and the device has better assembly adjustability, which is convenient for calibration of different depths according to needs, and further improves the calibration accuracy of the device. When the device is used, the second rod and the first rod are moved up, and under the action of the magnetic plate, when the iron column moves to the outer end of the magnetic plate, the iron column is magnetically attracted to the magnetic plate, and the iron column drives the limit rod to automatically move outward, so that the second rod and the first rod can be folded and stored, so that the device has better linkage. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.

[0022] The drawings described below are only related to some embodiments of the present invention, but are not intended to limit the present invention.

[0023] In the attached picture:

[0024] Figure 1 It is a front axial schematic diagram of a calibration and detection device for an ultrasonic depth sounder of the present invention.

[0025] Figure 2 It is a schematic rear axial view of a calibration detection device for an ultrasonic depth sounder of the present invention.

[0026] Figure 3 It is a disassembled schematic diagram of the calibration detection device of the ultrasonic depth sounder of the present invention.

[0027] Figure 4It is a schematic diagram of a calibration rod group of a calibration detection device for an ultrasonic depth sounder of the present invention.

[0028] Figure 5 It is a schematic cross-sectional view of the connection between the first rod and the second rod of the calibration detection device of the ultrasonic depth sounder of the present invention.

[0029] Figure 6 It is a schematic diagram of the installation of the first rod member of the calibration detection device of the ultrasonic depth sounder of the present invention.

[0030] Figure 7 It is a bottom schematic diagram of a base of a calibration detection device for an ultrasonic depth sounder of the present invention.

[0031] Figure 8 It is a schematic diagram of the installation of the ultrasonic depth sounder of the calibration detection device of the present invention.

[0032] Fig. 9 It is a schematic diagram of disassembling and assembling the depth sounder of the calibration detection device of the ultrasonic depth sounder of the present invention.

[0033] Reference numerals list

[0034] 1. Base; 101. Bracket; 1011. Magnetic plate; 102. Guide groove; 103. Fixed plate; 1031. Motor; 1032. First gear; 1033. Second gear; 1034. Synchronous belt; 104. Fixed rod; 1041. First elastic member; 105. Moving frame; 1051. Connecting plate; 1052. Inserting rod; 106. Positioning groove; 2. Calibration rod group; 201. First rod member; 2011, guide block; 2012, rack; 2013, threaded hole; 2014, inner slide groove; 2015, limit rod; 2016, slide shaft; 2017, second elastic member; 2018, iron column; 202, second rod; 2021, docking hole; 2022, limit hole; 203, threaded rod; 3, depth sounder; 301, cable; 302, positioning block; 3021, jack; 4, reflection calibration plate. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the embodiment of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] Example 1: Please refer to Figures 1 to 9 As shown:

[0037] The present invention provides a calibration detection device for an ultrasonic depth sounder, comprising a base 1 and a depth sounder 3;

[0038] A group of brackets 101 are fixedly installed on the top of the base 1, and a group of magnetic plates 1011 are fixedly installed on the outer end of the brackets 101. A group of fixed plates 103 are fixedly installed on the bottom of the base 1, and a motor 1031 is fixedly installed on the outer end of the fixed plate 103. A first gear 1032 is fixedly installed on the transmission shaft of the motor 1031. A group of mobile frames 105 are slidably installed on the left end of the base 1, and two groups of plug rods 1052 are fixedly installed on the left end of the mobile frame 105. The depth sounder 3 is plugged and installed on the outer end of the base 1. A cable 301 is connected to the top of the depth sounder 3. A group of sockets 3021 are respectively opened at both ends of the depth sounder 3, and the plug rods 1052 at the left end of the mobile frame 105 are respectively plugged and installed on the sockets 3021 at both ends of the depth sounder 3. A calibration rod group 2 is also slidably plugged on the base 1, and the calibration rod group 2 includes a first Rod 201, second rod 202 and threaded rod 203, outer ends of the first rod 201 and the second rod 202 are provided with scale lines, the first rod 201 and the second rod 202 are alternately arranged, and the adjacent first rod 201 and the second rod 202 are rotated together, the first rod 201 and the second rod 202 are installed and connected in the same way, and the first rod 201 and the second rod 202 are symmetrical structures, a limiting rod 2015 is slidably installed on the top of the first rod 201, and an iron column 2018 is fixedly installed on the outer end of the limiting rod 2015, a limiting hole 2022 is provided at the bottom of the second rod 202, and the limiting rod 2015 at the top of the first rod 201 is plugged and installed on the limiting hole 2022 at the bottom of the second rod 202, and a reflection calibration plate 4 is fixedly installed on the outer side of the bottom first rod 201.

[0039] Among them, Figure 8 and Fig. 9As shown, two groups of positioning grooves 106 are provided at the left end of the base 1, and a group of positioning blocks 302 are fixedly connected to the front and rear ends of the depth sounder 3, and the positioning blocks 302 at the front and rear ends of the depth sounder 3 are plugged and installed on the positioning grooves 106 at the left end of the base 1. Two groups of fixing rods 104 are fixedly installed on the left end of the base 1, and a group of connecting plates 1051 are fixedly installed at both ends of the mobile frame 105, respectively. Sliding holes are provided on the connecting plates 1051, and the sliding holes of the connecting plates 1051 at both ends of the mobile frame 105 are respectively slidably installed on the fixing rods 104 at the left end of the base 1, and a group of first elastic members 1041 are respectively sleeved and installed on the fixing rods 104 at the left end of the base 1, and the bottom ends of the first elastic members 1041 are respectively in contact with the top surfaces of the connecting plates 1051 on the mobile frame 105; specifically, the sliding holes of the connecting plates 1051 at both ends of the mobile frame 105 are respectively The movable frame 105 is slidably installed on the fixed rod 104 at the left end of the base 1, and the movable frame 105 is pulled upward to plug and install the positioning blocks 302 at the front and rear ends of the depth sounder 3 on the positioning grooves 106 at the left end of the base 1. After the depth sounder 3 moves to the fixed position, the movable frame 105 is released, and under the action of the first elastic member 1041 on the fixed rod 104, the movable frame 105 moves downward, and the insertion rod 1052 at the left end of the movable frame 105 is respectively plugged and installed on the sockets 3021 at both ends of the depth sounder 3, so that the depth sounder 3 of the device is convenient for rapid positioning and disassembly, and cooperates with the reflection calibration plate 4 outside the first rod 201 at the bottom to measure the time interval from the emission to the reception of ultrasonic waves in different water qualities, and the depth sounder 3 is always placed on the vertical top of the reflection calibration plate 4 outside the first rod 201 at the bottom, so that the device has better working efficiency.

[0040] In the embodiments of the present disclosure, Figure 6 and Figure 7As shown, two sets of guide grooves 102 are provided on the base 1, and the front and rear ends of the first rod 201 are respectively fixedly connected with guide blocks 2011, and the guide blocks 2011 at the front and rear ends of the first rod 201 are respectively slidably installed on the guide grooves 102 of the base 1, and the front end of the first rod 201 is also fixedly installed with a rack 2012, and the bottom of the fixed plate 103 is also rotatably installed with a second gear 1033, and the first gear 1032 and the second gear 1033 are respectively meshed and connected with the rack 2012 at the front end of the first rod 201, and the outer end of the first gear 1032 is fixedly installed with a synchronous wheel, and the outer end of the second gear 1033 is fixedly installed with a synchronous wheel, and the first gear 1032 and the second gear 1033 are respectively meshed and connected with the rack 2012 at the front end of the first rod 201. They are driven and connected together by a synchronous belt 1034; specifically, the guide blocks 2011 at the front and rear ends of the first rod 201 are respectively slidably installed on the guide groove 102 of the base 1, and the first gear 1032 and the second gear 1033 are respectively meshed and connected with the rack 2012 at the front end of the first rod 201, and the first gear 1032 and the second gear 1033 are driven and connected together by a synchronous belt 1034, and the motor 1031 drives the first gear 1032 and the second gear 1033 to rotate, so as to drive the first rod 201 and the second rod 202 to move downward in sequence, which plays a role of auxiliary guide drive for the calibration rod group 2, so as to perform positioning calibration at different depths, thereby improving the use efficiency of the device.

[0041] Embodiment 2: Based on Embodiment 1, wherein Figure 4 and Figure 5As shown, a group of inner slide grooves 2014 are opened at the top of the first rod 201, a group of sliding shafts 2016 are fixedly installed on the limit rod 2015, and the sliding shafts 2016 on the limit rod 2015 are slidably installed in the inner slide grooves 2014 at the top of the first rod 201, a group of second elastic members 2017 are installed in the inner slide grooves 2014 at the top of the first rod 201, and the inner ends of the second elastic members 2017 are in contact with the outer end surfaces of the sliding shafts 2016 on the limit rod 2015, and the first rod 201 A group of threaded holes 2013 are opened at the top of the second rod 202, a group of docking holes 2021 are opened at the bottom of the second rod 202, and the threaded rod 203 passes through the docking holes 2021 at the bottom of the second rod 202 and is threadedly installed on the threaded holes 2013 at the top of the first rod 201; specifically, the threaded rod 203 passes through the docking holes 2021 at the bottom of the second rod 202 and is threadedly installed on the threaded holes 2013 at the top of the first rod 201, and the adjacent first rod 201 and the second rod 202 are rotated When the second rod 202 and the first rod 201 are in a vertical state, the limiting rod 2015 at the top of the first rod 201 is plugged into the limiting hole 2022 at the bottom of the second rod 202 under the action of the second elastic member 2017 in the inner groove 2014, so that the second rod 202 and the first rod 201 are automatically self-locked after being in the unfolded 180-degree position, so that the depth sounder 3 is always in the vertical upper position of the reflection calibration plate 4 outside the first rod 201 at the bottom, so as to improve the calibration accuracy of the device, and the device has better assembly adjustability, which is convenient for calibration at different depths according to needs, and further improves the calibration accuracy of the device.

[0042] Specific usage and function of this embodiment: In the present invention, the movable frame 105 is pulled upward to plug and install the positioning blocks 302 at the front and rear ends of the depth sounder 3 on the positioning grooves 106 at the left end of the base 1. After the depth sounder 3 moves to the fixed position, the movable frame 105 is released. Under the action of the first elastic member 1041 on the fixed rod 104, the movable frame 105 moves downward, and the plugging rod 1052 at the left end of the movable frame 105 is respectively plugged and installed on the plug holes 3021 at both ends of the depth sounder 3, so that the depth sounder 3 of this device is convenient for rapid positioning and disassembly. The motor 1031 drives the first gear 1032 and the second gear 1033 to rotate, so as to drive the first rod 201 and the second rod 202 to move downward in sequence, which plays an auxiliary guiding driving role for the calibration rod group 2. When the second rod 202 is in the same vertical state as the first rod 201, under the action of the second elastic member 2017 in the inner slide groove 2014, the limiting rod 2 at the top of the first rod 201 015 is plugged and installed on the limiting hole 2022 at the bottom of the second rod 202, so that the second rod 202 and the first rod 201 are automatically self-locked after being in the unfolded 180-degree position, so that the depth sounder 3 is always in the vertical upper position of the reflection calibration plate 4 outside the bottom first rod 201, so as to improve the calibration accuracy of the device, and when the device is used, the second rod 202 and the first rod 201 move up, under the action of the magnetic plate 1011, when the iron column 2018 moves to the outer end of the magnetic plate 1011, the iron column 2018 is magnetically attracted to the magnetic plate 1011, and the iron column 2018 drives the limiting rod 2015 to automatically move outward, so that the second rod 202 and the first rod 201 can be folded and stored, so that the device has better linkage, and the ultrasonic propagation speed deviation in the water quality of water bodies in different regions is calculated according to the propagation speed of ultrasonic waves in water and the time interval from the emission of ultrasonic signals to the reception of ultrasonic signals, and the ultrasonic depth sounder 3 has been calibrated.

Claims

1. A calibration detection device for an ultrasonic depth sounder, characterized in that: It comprises a base (1) and a depth sounder (3); A group of brackets (101) are fixedly mounted on the top of the base (1), a group of magnet plates (1011) are fixedly mounted on the outer ends of the brackets (101), a group of fixed plates (103) are fixedly mounted on the bottom of the base (1), a motor (1031) is fixedly mounted on the outer ends of the fixed plates (103), a first gear (1032) is fixedly mounted on the transmission shaft of the motor (1031), a group of moving frames (105) are slidably mounted on the left end of the base (1), and two groups of plug rods (1052) are fixedly mounted on the left end of the moving frames (105), a depth sounder (3) is plugged and mounted on the outer end of the base (1), and the depth sounder (3) is fixedly mounted on the outer end of the base (1). ) is connected to the top of the depth sounder (3), a group of sockets (3021) are respectively provided at both ends of the depth sounder (3), and the plug rods (1052) at the left end of the mobile frame (105) are respectively plugged and installed on the sockets (3021) at both ends of the depth sounder (3), and a calibration rod group (2) is also slidably plugged on the base (1), and the calibration rod group (2) includes a first rod member (201), a second rod member (202) and a threaded rod (203), and the outer ends of the first rod member (201) and the second rod member (202) are both provided with scale lines, and the first rod member (201) and the second rod member (202) are alternately arranged, and adjacent first rod members (20 1) and the second rod (202) are rotated together, the first rod (201) and the second rod (202) are installed and connected in the same manner, and the first rod (201) and the second rod (202) are symmetrical structures, a limit rod (2015) is slidably installed on the top of the first rod (201), an iron column (218) is fixedly installed on the outer end of the limit rod (2015), a limit hole (2022) is provided at the bottom of the second rod (202), and the limit rod (2015) at the top of the first rod (201) is plugged and installed on the limit hole (2022) at the bottom of the second rod (202), and the bottom of the first rod A reflection calibration plate (4) is fixedly installed on the outer side of (201); a group of inner slide grooves (2014) are opened on the top of the first rod (201), a group of sliding shafts (2016) are fixedly installed on the limit rod (2015), and the sliding shafts (2016) on the limit rod (2015) are slidably installed in the inner slide grooves (2014) at the top of the first rod (201); a group of second elastic members (2017) are installed in the inner slide grooves (2014) at the top of the first rod (201), and the inner ends of the second elastic members (2017) are in contact with the outer end surfaces of the sliding shafts (2016) on the limit rod (2015);The slide shaft (216) on the limit rod (215) is slidably installed in the inner slide groove (214) at the top of the first rod (201). When the second rod (202) and the first rod (201) are both in a vertical state, under the action of the second elastic member (217) in the inner slide groove (214), the limit rod (215) at the top of the first rod (201) is plugged and installed in the limit hole (2022) at the bottom of the second rod (202), so that the second rod (202) and the first rod (201) are automatically extended after being in the 180-degree unfolded position. Self-locking, so that the depth sounder (3) is always in a vertically upper position of the reflection calibration plate (4) outside the first rod (201) at the bottom; when the device is used, the second rod (202) and the first rod (201) move upward, and under the action of the magnetic plate (1011), when the iron column (2018) moves to the outer end of the magnetic plate (1011), the iron column (2018) is magnetically attracted to the magnetic plate (1011), and the iron column (2018) drives the limit rod (2015) to automatically move outward, so that the second rod (202) and the first rod (201) can be folded and stored. ; 2. The ultrasonic depth sounder calibration detection device according to claim 1, characterized in that: The left end of the base (1) is provided with two groups of positioning grooves (106), and the front and rear ends of the depth sounder (3) are respectively fixedly connected with a group of positioning blocks (302), and the positioning blocks (302) at the front and rear ends of the depth sounder (3) are plugged and installed on the positioning grooves (106) at the left end of the base (1).

3. The ultrasonic depth sounder calibration detection device according to claim 1, characterized in that: Two groups of fixed rods (104) are fixedly mounted on the left end of the base (1), and a group of connecting plates (1051) are fixedly mounted on both ends of the movable frame (105). Sliding holes are provided on the connecting plates (1051), and the sliding holes of the connecting plates (1051) at both ends of the movable frame (105) are slidably mounted on the fixed rods (104) at the left end of the base (1).

4. The ultrasonic depth sounder calibration detection device according to claim 1, characterized in that: A group of first elastic members (1041) are respectively sleeved and installed on the fixed rod (104) at the left end of the base (1), and the bottom ends of the first elastic members (1041) are respectively in contact with the top surface of the connecting plate (1051) on the movable frame (105).

5. The calibration detection device for an ultrasonic depth sounder according to claim 1, characterized in that: The base (1) is provided with two groups of guide grooves (102), the front and rear ends of the first rod (201) are respectively fixedly connected with guide blocks (2011), and the guide blocks (2011) at the front and rear ends of the first rod (201) are respectively slidably mounted on the guide grooves (102) of the base (1).

6. The ultrasonic depth sounder calibration detection device according to claim 1, characterized in that: A rack (2012) is fixedly mounted on the front end of the first rod (201), and a second gear (1033) is rotatably mounted on the bottom of the fixed plate (103), and the first gear (1032) and the second gear (1033) are respectively meshed and transmission-connected with the rack (2012) at the front end of the first rod (201).

7. The ultrasonic depth sounder calibration detection device according to claim 1, characterized in that: A synchronous wheel is fixedly mounted on the outer end of the first gear (1032), a synchronous wheel is fixedly mounted on the outer end of the second gear (1033), and the first gear (1032) and the second gear (1033) are connected together by driving via a synchronous belt (1034).

8. The ultrasonic depth sounder calibration detection device according to claim 1, characterized in that: A group of threaded holes (2013) are formed at the top of the first rod (201), a group of docking holes (2021) are formed at the bottom of the second rod (202), and the threaded rod (203) passes through the docking holes (2021) at the bottom of the second rod (202) and is threadedly mounted on the threaded holes (2013) at the top of the first rod (201).

Images