A convenient water depth measuring device

Abstract

The invention relates to the field of measurement technology, and provides a water depth measurement device that is easy to use, comprising a measuring hull, a load-bearing frame, a suspension assembly, a water depth measurement mechanism and a measurement auxiliary mechanism, wherein the water depth measurement mechanism comprises a length measurement component and a sinking part, a winding wheel and a first angle sensor in the length measurement component are both fixedly connected to a first transverse rotating shaft, a second driving part is transmission-connected to the first angle sensor, a gravity ball in the sinking part is wound on the surface of the winding wheel through the steel wire, the measurement auxiliary mechanism comprises a fixed component and a swing component, a longitudinal tube in the fixed component is installed above a fixed shell, a balance column in the swing component is connected to the fixed shell, a swing arm is fixedly connected between the balance column and the second transverse rotating shaft, a threading ring is fixedly connected to the balance column, the balance column is slidably connected to an arc-shaped guide rail, a steel wire runs through the longitudinal tube and the threading ring, and a second angle sensor is fixedly connected to the second transverse rotating shaft, and the device has the characteristics of being easy to use and accurate in measurement.

Description

Technical Field

[0001] The invention relates to the field of measurement technology, and in particular to a water depth measurement device which is easy to use. Background Art

[0002] Publication No. CN114413727A discloses a water depth measuring device, including a hull, a measuring component and a control component. A hanging conveyor rail is provided on the ring on the lower outer wall of the hull. The measuring component can rotate around the hull through the hanging conveyor rail. The measuring component can be adjusted in both height and width directions. The measuring component is used to measure the water depth. The hull is provided with a control room. The control component is arranged in the control room and is used to control the opening and closing of the measuring component, the hull and the hanging conveyor rail. The measuring component is arranged to be able to rotate around the hull and can achieve telescopic adjustment in both height and width directions. The measurement range of a docked, non-moving hull is the ring belt area along the rotation of the hull, and the measurement range is wide. The original connecting rope and the sounding hammer are used as a combined measuring tool to measure the water depth. No expensive high-end equipment is involved, the investment cost is small, and a relatively accurate water depth measurement result can be obtained as a whole.

[0003] The above technical solution also has the following defects: when the flow velocity below the river is high, the impact of the water flow will impact the connecting rope and the sounding hammer, causing them to tilt, which will affect the accuracy of the measurement result. Summary of the invention

[0004] The purpose of the present invention is to provide a water depth measuring device that is easy to use, aiming to solve the problems existing when using the existing water depth measuring device.

[0005] To achieve the above object, the present invention provides the following technical solution: a water depth measuring device that is easy to use, comprising a measuring hull and a carrier, wherein the carrier is fixedly connected to the measuring hull, and further comprising:

[0006] A suspension assembly, the suspension assembly comprising a suspension connected to a carrier frame;

[0007] A water depth measuring mechanism, the water depth measuring mechanism comprises a length measuring component and a sinking part, the length measuring component comprises a second driving part, a winding wheel, a first transverse rotating shaft and a first angle sensor, the second driving part and the first transverse rotating shaft are both connected to the suspension, the winding wheel and the first angle sensor are both fixedly connected to the first transverse rotating shaft, the second driving part is transmission-connected to the first angle sensor, the sinking part comprises a gravity ball and a steel wire, the gravity ball is connected to the end of the steel wire, and the steel wire is wound on the surface of the winding wheel;

[0008] A measurement auxiliary mechanism, the measurement auxiliary mechanism includes a fixed component and a swing component, the fixed component includes a longitudinal tube, a fixed shell and an arc guide rail, the longitudinal tube is fixedly connected above the fixed shell, the suspension is fixedly connected to the fixed shell, and the arc guide rail is located on the surface of the fixed shell;

[0009] The swing assembly includes a threading ring, a balance column, a swing arm, a second transverse rotating shaft and a second angle sensor. The balance column is connected to a fixed shell, the center of the bottom end surface of the longitudinal tube and the center of the arc guide rail coincide with the axis of the balance column, the swing arm is fixedly connected between the balance column and the second transverse rotating shaft, the threading ring is fixedly connected to the balance column, the balance column is slidably connected to the arc guide rail, the steel wire passes through the longitudinal tube and the threading ring, and the second angle sensor is fixedly connected to the second transverse rotating shaft.

[0010] As a further solution of the present invention, it also includes an adjustment component, which includes a telescopic part, a bent plate, a ring and a slide plate. The telescopic part is fixedly connected between the suspension and the bent plate. A slide plate is arranged under the bent plate and is used to support the gravity ball. A ring is arranged at the other end of the bent plate.

[0011] As a further solution of the present invention, the water depth measuring mechanism also includes a transmission part and a limiting rib. The limiting rib is arranged on the surface of the first transverse rotating shaft. The transmission part includes a sleeve, a second transmission gear and a limiting plate. The second transmission gear and the limiting plate are fixedly connected to the sleeve. The sleeve is movably sleeved on the surface of the first transverse rotating shaft. A limiting groove is arranged on the inner wall of the sleeve. The limiting rib is slidably connected to the limiting groove. The second driving part is transmission-connected to the second transmission gear. The ring is movably sleeved on the surface of the sleeve.

[0012] As a further solution of the present invention, the suspension assembly also includes a first bracket, a base plate, a guide rail, a falling opening and a one-way opening frame, the first bracket is fixedly connected to the side wall of the suspension, the first transverse rotating shaft is connected to the first bracket, the base plate is fixedly connected to the bottom of the suspension, the surface of the base plate is provided with a guide rail, the one-way opening frame is fixedly connected to the surface of the base plate, the surface of the one-way opening frame is provided with a falling opening, the guide rail passes through the one-way opening frame, and the slide plate is slidably connected to the guide rail.

[0013] As a further solution of the present invention, the suspension assembly also includes a pawl, which is installed on the surface of the first bracket. When the telescopic member drives the skateboard to disengage from the falling mouth, the second transmission gear engages with the pawl. When the telescopic member drives the skateboard to enter the falling mouth, the second transmission gear is connected to the second driving part.

[0014] As a further solution of the present invention, the suspension assembly also includes a first drive unit, a longitudinal rotating shaft and a first transmission gear. A longitudinal rotating shaft is fixedly connected above the suspension, the first drive unit and the longitudinal rotating shaft are connected to the carrier frame, the first transmission gear is fixedly connected to the longitudinal rotating shaft, and the first drive unit is in transmission connection with the first transmission gear.

[0015] As a further solution of the present invention, the fixing assembly further includes a second bracket and a mounting frame, the second bracket is fixedly connected to the fixing shell and the mounting frame bracket, and the suspension is fixedly connected to the mounting frame.

[0016] The beneficial effects of the present invention are as follows: the present application, through the design of combining a suspension assembly, a water depth measuring mechanism and a measuring auxiliary mechanism, can not only obtain the descending distance data of the steel wire by obtaining the rotation angle data of the winding wheel through the first angle sensor, but can also directly obtain the inclination angle data of the steel wire at the bottom of the longitudinal tube by monitoring the rotation angle of the second lateral rotating shaft through the second angle sensor, thereby being able to use the cosine theorem of a right triangle to quickly and accurately obtain the depth data of river water with a relatively large flow rate. The application has the characteristics of strong practicality, low investment cost, easy use and accurate measurement, and solves the problem of being unable to quickly and accurately measure the depth of river water with a large flow rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a first stereoscopic diagram of a water depth measuring device that is easy to use according to an embodiment of the present invention.

[0018] Figure 2 An exploded view of a water depth measuring device that is easy to use according to an embodiment of the present invention.

[0019] Figure 3 It is a three-dimensional diagram of a suspension assembly according to an embodiment of the present invention.

[0020] Figure 4 The figure is a schematic diagram of the disassembly of the water depth measurement mechanism according to the embodiment of the present invention.

[0021] Figure 5 It is a disassembled schematic diagram of the measurement auxiliary mechanism according to an embodiment of the present invention.

[0022] Figure 6 It is a three-dimensional diagram of a fixing assembly according to an embodiment of the present invention.

[0023] Figure 7 It is a three-dimensional diagram of a swing assembly according to an embodiment of the present invention.

[0024] Figure 8 It is a schematic diagram of the disassembly of the adjustment component and the transmission part according to an embodiment of the present invention.

[0025] Fig. 9 This is a second stereoscopic view of a water depth measuring device that is easy to use according to an embodiment of the present invention.

[0026] Fig.10 For the present invention Fig. 9 A partial enlarged view of point a in the middle.

[0027] Fig.11 For the present invention Figure 1 A partial enlargement of point b in the middle.

[0028] Fig.12 It is a planar cross-sectional view of the assembled water depth measurement mechanism and the auxiliary measurement mechanism according to an embodiment of the present invention.

[0029] Fig.13 It is an assembly diagram of the water depth measurement mechanism and the measurement auxiliary mechanism according to an embodiment of the present invention.

[0030] Fig.14 For the present invention Fig.13 A partial enlargement of point c in the middle.

[0031] Fig.15 It is a side view of the present invention after being connected with the measuring hull.

[0032] Figure numerals: 1-suspension assembly, 11-first driving part, 12-suspension, 13-longitudinal rotating shaft, 14-first transmission gear, 15-first bracket, 16-pawl, 17-bottom plate, 171-guide rail, 18-falling mouth, 19-one-way opening frame, 2-water depth measuring mechanism, 21-length measuring component, 211-second driving part, 212-winding wheel, 213-first lateral rotating shaft, 214-transmission part, 2141-sleeve, 2142-second transmission gear, 2143-limiting plate, 215-first angle sensor, 21 6-limiting ribs, 22-falling part, 221-gravity ball, 222-steel wire, 3-measurement auxiliary mechanism, 31-fixed component, 311-longitudinal tube, 312-fixed shell, 313-second bracket, 314-arc guide rail, 315-mounting frame, 32-swing component, 321-threading ring, 322-balance column, 323-swing arm, 324-second lateral rotation axis, 325-second angle sensor, 4-adjustment component, 41-telescopic part, 42-bend plate, 43-ring, 44-skateboard, 5-carrying frame, 6-measuring hull. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0034] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0035] See also Figures 1 to 15 In one embodiment of the present invention, a water depth measuring device that is easy to use includes a measuring hull 6 and a carrier 5, wherein the carrier 5 is fixedly connected to the measuring hull 6, and further includes:

[0036] A suspension assembly 1, wherein the suspension assembly 1 comprises a suspension 12 connected to a carrier frame 5;

[0037] A water depth measuring mechanism 2, the water depth measuring mechanism 2 comprises a length measuring component 21 and a falling part 22, the length measuring component 21 comprises a second driving part 211, a winding wheel 212, a first transverse rotating shaft 213 and a first angle sensor 215, the second driving part 211 and the first transverse rotating shaft 213 are both connected to the suspension 12, the winding wheel 212 and the first angle sensor 215 are both fixedly connected to the first transverse rotating shaft 213, the second driving part 211 is transmission-connected to the first angle sensor 215, the falling part 22 comprises a gravity ball 221 and a steel wire 222, the gravity ball 221 is connected to the end of the steel wire 222, and the steel wire 222 is wound on the surface of the winding wheel 212;

[0038] The measurement auxiliary mechanism 3 includes a fixed component 31 and a swing component 32. The fixed component 31 includes a longitudinal tube 311, a fixed shell 312 and an arc guide rail 314. The longitudinal tube 311 is fixedly connected above the fixed shell 312. The suspension 12 is fixedly connected to the fixed shell 312. The arc guide rail 314 is located on the surface of the fixed shell 312.

[0039] The swing assembly 32 includes a threading ring 321, a balance column 322, a swing arm 323, a second transverse rotating shaft 324 and a second angle sensor 325. The balance column 322 is connected to the fixed shell 312. The center of the bottom end surface of the longitudinal tube 311 and the center of the arc guide rail 314 coincide with the axis of the balance column 322. The swing arm 323 is fixedly connected between the balance column 322 and the second transverse rotating shaft 324. The threading ring 321 is fixedly connected to the balance column 322. The balance column 322 is slidably connected to the arc guide rail 314. The steel wire 222 passes through the longitudinal tube 311 and the threading ring 321. The second angle sensor 325 is fixedly connected to the second transverse rotating shaft 324.

[0040] Furthermore, the fixing assembly 31 further includes a second bracket 313 and a mounting bracket 315 , the second bracket 313 is fixedly connected to the fixing housing 312 and the mounting bracket 315 , and the suspension 12 is fixedly connected to the mounting bracket 315 .

[0041] In the embodiment of the present invention, after the diameter of the winding wheel 212 is determined, the length of the steel wire 222 wound and released by the winding wheel 212 when it rotates one circle is the length of the winding wheel 212. The descent distance data of the steel wire 222 can be obtained. The calibers of the longitudinal tube 311 and the threading ring 321 are consistent with the diameter of the steel wire 222. When the measuring hull 6 is located on the river surface, the longitudinal tube 311 remains vertical to the water, and the distance between the bottom of the longitudinal tube 311 and the river surface is fixed. The gravity ball 221 is a lead ball or a metal ball. When the river water flow rate is small, the impact force of the water flow on the gravity ball 221 is small. At this time, the steel wire 222 and the central axis of the longitudinal tube 311 coincide by default. The river water depth can be calculated by obtaining the descent distance data of the steel wire 222.

[0042] See also Figure 1 , Figure 8 and Fig. 9 In one embodiment of the present invention, an adjustment component 4 is further included, and the adjustment component 4 includes a telescopic member 41, a bent plate 42, a ring 43 and a slide plate 44. The telescopic member 41 is fixedly connected between the suspension 12 and the bent plate 42. A slide plate 44 is arranged below the bent plate 42. The slide plate 44 is used to support the gravity ball 221. A ring 43 is arranged at the other end of the bent plate 42.

[0043] In the embodiment of the present invention, when the measurement is completed, the telescopic member 41 moves the slide plate 44 to the falling opening 18 by moving the bent plate 42. It is necessary that an avoidance opening may be provided on the surface of the slide plate 44, or the size of the slide plate 44 may be smaller than the size of the falling opening 18, so that a margin is left between the slide plate 44 and the falling opening 18, which is used to avoid the steel wire 222 when winding and releasing the steel wire 222. At this time, the second transmission gear 2142 disengages from the ratchet 16 and is connected to the second drive unit 211 for transmission. The second drive unit 211 drives the winding wheel 212 and the first horizontal rotating shaft 213 to rotate and wind up the steel wire 222 through the second transmission gear 2142. When the gravity ball 221 moves to the position of the falling opening 18, the staff manually places the gravity ball 22 on the surface of the slide plate 44.

[0044] See also Figure 1 , Figures 8 to 11 In one embodiment of the present invention, the water depth measuring mechanism 2 further includes a transmission part 214 and a limiting rib 216. The limiting rib 216 is arranged on the surface of the first transverse rotating shaft 213. The transmission part 214 includes a sleeve 2141, a second transmission gear 2142 and a limiting plate 2143. The second transmission gear 2142 and the limiting plate 2143 are both fixedly connected to the sleeve 2141. The sleeve 2141 is movably sleeved on the surface of the first transverse rotating shaft 213. A limiting groove is arranged on the inner wall of the sleeve 2141. The limiting rib 216 is slidably connected to the limiting groove. The second driving part 211 is transmission-connected to the second transmission gear 2142. The collar 43 is movably sleeved on the surface of the sleeve 2141.

[0045] See also Figures 3 to 11 Furthermore, the suspension assembly 1 also includes a first bracket 15, a base plate 17, a guide rail 171, a falling opening 18 and a one-way opening frame 19, the first bracket 15 is fixedly connected to the side wall of the suspension 12, the first transverse rotating shaft 213 is connected to the first bracket 15, the base plate 17 is fixedly connected to the bottom of the suspension 12, the surface of the base plate 17 is provided with a guide rail 171, the one-way opening frame 19 is fixedly connected to the surface of the base plate 17, the surface of the one-way opening frame 19 is provided with a falling opening 18, the guide rail 171 penetrates the one-way opening frame 19, and the slide plate 44 is slidably connected to the guide rail 171.

[0046] In an embodiment of the present invention, the suspension assembly 1 also includes a pawl 16, which is installed on the surface of the first bracket 15. When the telescopic member 41 drives the skateboard 44 to disengage from the falling mouth 18, the second transmission gear 2142 engages with the pawl 16. When the telescopic member 41 drives the skateboard 44 to enter the falling mouth 18, the second transmission gear 2142 is connected to the second driving part 211 in transmission. The telescopic member 41 is an electric telescopic rod. The telescopic member 41 achieves the purpose of disengaging the skateboard 44 from the top of the falling mouth 18 by moving the bent plate 42. At this time, the moving skateboard 44 drives the second transmission gear 2142 to move to a position engaged with the pawl 16 through the limiting plate 2143, and the gravity ball 221 sinks into the river under the action of gravity.

[0047] See also Figure 1 and Fig. 9 In one embodiment of the present invention, the suspension assembly 1 further includes a first driving unit 11, a longitudinal rotating shaft 13 and a first transmission gear 14. The longitudinal rotating shaft 13 is fixedly connected above the suspension 12. The first driving unit 11 and the longitudinal rotating shaft 13 are connected to the carrier frame 5. The first transmission gear 14 is fixedly connected to the longitudinal rotating shaft 13. The first driving unit 11 is in transmission connection with the first transmission gear 14.

[0048] In an embodiment of the present invention, in order to facilitate the purpose of adjusting the direction of the measuring device according to the direction of the water flow by driving the first transmission gear 14 and the suspension 12 to rotate around the longitudinal rotation axis 13 by the first driving part 11, the one-way opening frame 19 can prevent the gravity ball 221 from falling off.

[0049] Working principle: In the initial state, due to the limiting support of the slide plate 44 and the one-way opening frame 19, the gravity ball 221 will not fall off the bottom plate 17. When it is necessary to measure the depth of a turbulent river, the telescopic member 41 first moves the slide plate 44 away from the top of the drop opening 18 by moving the curved plate 42. At this time, the moving slide plate 44 drives the second transmission gear 2142 to move to a position engaged with the ratchet 16 through the limiting piece 2143. In the process of the gravity ball 221 sinking into the river under the action of gravity, it will pass through the steel The wire 222 drives the winding wheel 212 to rotate, and the first angle sensor 215 is used to monitor the rotation angle of the winding wheel 212. When the size of the winding wheel 212 is limited, the descending distance data of the wire 222 can be directly obtained through the rotation angle of the winding wheel 212. The function of the ratchet 16 is to prevent the winding wheel 212 from reversing, so that the first angle sensor 215 can obtain the rotation angle data of the winding wheel 212 more accurately, thereby ensuring the accuracy of the descending distance data of the wire 222. The speed is fast and the impact force is large. The gravity ball 221 will tilt towards the water flow direction during the descent process. The longitudinal tube 311 is used to ensure that the internal steel wire 222 is in a vertical state with the horizontal plane. When the water flow impact drives the gravity ball 221 and the steel wire 222 to tilt, the steel wire 222 will drive the threading ring 321 and the balance column 322 to slide along the arc guide rail 314. The sliding balance column 32 drives the second horizontal shaft 324 to rotate through the swing arm 323. It should be noted that due to the bottom of the longitudinal tube 311 The center of the end face and the center of the arc guide rail 314 coincide with the axis of the balance column 322. Therefore, the rotation angle of the swing arm 323 around the second transverse rotation axis 324 is the inclination angle of the steel wire 222 at the bottom of the longitudinal tube 311. The second angle sensor 325 can directly obtain the inclination angle data of the steel wire 222 at the bottom of the longitudinal tube 311 by monitoring the rotation angle of the second transverse rotation axis 324. The first angle sensor 21 and the second angle sensor 325 upload the data to the remote computer system.

[0050] The distance between the bottom of the longitudinal tube 311 and the water surface is fixed, which is set as a constant h here and saved in the computer program. It is assumed here that the bottom of the river is a plane, and the center point of the bottom of the longitudinal tube 311, the projection point of the longitudinal tube 311 and the bottom of the river, and the center point of the gravity ball 221 form a right triangle. The volume of the gravity ball 221 is negligible. Since the distance between the center point of the gravity ball 221 and the center point of the bottom of the longitudinal tube 311 is the descending distance data L1 (the hypotenuse of the right triangle) of the steel wire 222, the angle between the central axis of the longitudinal tube 311 and the steel wire 222 is the inclination angle data α (the angle between the hypotenuse and the right side of the right triangle) of the steel wire 222 at the bottom of the longitudinal tube 311 obtained by the second angle sensor 325 by monitoring the rotation angle of the second transverse rotating shaft 324. The distance H1 from the center point of the bottom of the longitudinal tube 311 to the bottom of the river can be obtained by using the cosine theorem of the right triangle. Finally, the computer system can directly output the river depth H=H1-h.

[0051] In summary, the present application, through the design of combining the suspension assembly 1, the water depth measuring mechanism 2 and the measuring auxiliary mechanism 3, can not only obtain the descending distance data of the steel wire 222 by obtaining the rotation angle data of the winding wheel 212 through the first angle sensor 215, but also can directly obtain the inclination angle data of the steel wire 222 at the bottom of the longitudinal tube 311 by monitoring the rotation angle of the second transverse rotating shaft 324 through the second angle sensor 325, so as to use the cosine theorem of the right triangle to quickly and accurately obtain the depth data of the river water with a large flow rate. It has the characteristics of strong practicality, low investment cost, easy use and accurate measurement, and solves the problem of not being able to quickly and accurately measure the depth of the river water with a large flow rate.

[0052] For those skilled in the art, although several embodiments and examples of the present invention are described, these embodiments and examples are presented as examples and are not intended to limit the scope of the invention. These new embodiments can be implemented in various other ways, and various omissions, substitutions, and changes can be made without departing from the scope of the subject matter of the invention. These embodiments and their variations are included in the scope and subject matter of the invention, and are included in the invention described in the claims and the scope of their equivalents.

[0053] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A water depth measuring device convenient to use, comprising a measuring hull (6) and a carrier (5), wherein the carrier (5) is fixedly connected to the measuring hull (6), characterized in that: Also includes: A suspension assembly (1), the suspension assembly (1) comprising a suspension (12) connected to a carrier frame (5); A water depth measuring mechanism (2), the water depth measuring mechanism (2) comprising a length measuring component (21) and a sinking part (22), the length measuring component (21) comprising a second driving part (211), a winding wheel (212), a first transverse rotating shaft (213) and a first angle sensor (215), the second driving part (211) and the first transverse rotating shaft (213) are both connected to a suspension (12), the winding wheel (212) and the first angle sensor (215) are both fixedly connected to the first transverse rotating shaft (213), the second driving part (211) is transmission-connected to the first angle sensor (215), the sinking part (22) comprises a gravity ball (221) and a steel wire (222), the gravity ball (221) is connected to the end of the steel wire (222), and the steel wire (222) is wound on the surface of the winding wheel (212); A measurement auxiliary mechanism (3), the measurement auxiliary mechanism (3) comprising a fixed component (31) and a swing component (32), the fixed component (31) comprising a longitudinal tube (311), a fixed shell (312) and an arc-shaped guide rail (314), the longitudinal tube (311) being fixedly connected above the fixed shell (312), the suspension (12) being fixedly connected to the fixed shell (312), and the arc-shaped guide rail (314) being located on the surface of the fixed shell (312); The swing assembly (32) comprises a threading ring (321), a balance column (322), a swing arm (323), a second transverse rotating shaft (324) and a second angle sensor (325); the balance column (322) is connected to the fixed housing (312); the center of the bottom end surface of the longitudinal tube (311) and the center of the arc guide rail (314) both coincide with the axis of the balance column (322); the swing arm (323) is fixedly connected between the balance column (322) and the second transverse rotating shaft (324); the threading ring (321) is fixedly connected to the balance column (322); the balance column (322) is slidably connected to the arc guide rail (314); the steel wire (222) passes through the longitudinal tube (311) and the threading ring (321); and the second angle sensor (325) is fixedly connected to the second transverse rotating shaft (324); An adjustment component (4), the adjustment component (4) comprising a telescopic member (41), a bent plate (42), a collar (43) and a slide plate (44), the telescopic member (41) being fixedly connected between the suspension frame (12) and the bent plate (42), a slide plate (44) being arranged below the bent plate (42), the slide plate (44) being used to support the gravity ball (221), and a collar (43) being arranged at the other end of the bent plate (42); The water depth measuring mechanism (2) further comprises a transmission part (214) and a limiting rib (216); the limiting rib (216) is arranged on the surface of the first transverse rotating shaft (213); the transmission part (214) comprises a sleeve (2141), a second transmission gear (2142) and a limiting plate (2143); the second transmission gear (2142) and the limiting plate (2143) are both fixedly connected to the sleeve (2141); the sleeve (2141) is movably sleeved on the surface of the first transverse rotating shaft (213); a limiting groove is arranged on the inner wall of the sleeve (2141); the limiting rib (216) is slidably connected to the limiting groove; the second driving part (211) is transmission-connected to the second transmission gear (2142); and the collar (43) is movably sleeved on the surface of the sleeve (2141).

2. A water depth measuring device convenient to use according to claim 1, characterized in that: The suspension assembly (1) further comprises a first bracket (15), a base plate (17), a guide rail (171), a drop opening (18) and a one-way opening frame (19); the first bracket (15) is fixedly connected to a side wall of the suspension (12); the first transverse rotation axis (213) is connected to the first bracket (15); the base plate (17) is fixedly connected to the bottom of the suspension (12); the surface of the base plate (17) is provided with a guide rail (171); the surface of the one-way opening frame (19) is fixedly connected to the surface of the base plate (17); the drop opening (18) is provided on the surface of the one-way opening frame (19); the guide rail (171) passes through the one-way opening frame (19); and the slide plate (44) is slidably connected to the guide rail (171).

3. A water depth measuring device convenient to use according to claim 2, characterized in that: The suspension assembly (1) further comprises a pawl (16), wherein the pawl (16) is mounted on the surface of the first bracket (15); when the telescopic member (41) drives the slide plate (44) to disengage from the drop opening (18), the second transmission gear (2142) engages with the pawl (16); when the telescopic member (41) drives the slide plate (44) to enter the drop opening (18), the second transmission gear (2142) is transmission-connected with the second driving part (211).

4. A water depth measuring device convenient to use according to claim 1, characterized in that: The suspension assembly (1) further comprises a first driving unit (11), a longitudinal rotating shaft (13) and a first transmission gear (14); the longitudinal rotating shaft (13) is fixedly connected to the top of the suspension (12); the first driving unit (11) and the longitudinal rotating shaft (13) are connected to the carrier frame (5); the first transmission gear (14) is fixedly connected to the longitudinal rotating shaft (13); and the first driving unit (11) is transmission-connected to the first transmission gear (14).

5. A water depth measuring device convenient to use according to claim 1, characterized in that: The fixing assembly (31) further comprises a second bracket (313) and a mounting frame (315); the second bracket (313) is fixedly connected to the fixing housing (312) and the mounting frame (315); and the suspension (12) is fixedly connected to the mounting frame (315).

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