Water measuring device convenient for measuring water level of drill hole

Abstract

The utility model relates to the technical field of water measuring devices convenient for measuring the water level of a drill hole, and discloses a water measuring device convenient for measuring the water level of the drill hole, which comprises a connecting seat, a ruler strip is wound and connected in the connecting seat, a detector is connected at the end of the ruler strip, a bracket is arranged on the outer wall of the connecting seat, and a water outlet is formed in the bracket. A clamping seat is assembled on the outer wall of the support, a detector and a restraining assembly are inserted into the clamping seat, the restraining assembly is assembled on the inner side wall of the connecting seat, the restraining assembly comprises a supporting part and a pressing part, the supporting part is used for being fixed to the inner side wall of the connecting seat and fixing the pressing part, and the pressing part is used for fixing the ruler strip. According to the water measuring device convenient to measure the water level of the drill hole, the restraining assembly is installed on the connecting base on the water measuring device, the effects of fixing the extended ruler strip and checking detection data of the ruler strip at any time are achieved, the ruler strip does not need to be held by hand, and the operation difficulty is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of water measuring device convenient to measure drilling water level, specifically a water measuring device convenient to measure drilling water level. BACKGROUND

[0002] In the fields of geological exploration, water conservancy project, mine exploitation and environmental monitoring, drilling water level measurement is a crucial basic work. Accurate grasp of drilling water level data has irreplaceable role for evaluating underground water resource reserves, analyzing geological structure stability, formulating engineering construction scheme and monitoring underground water environment change. Therefore, the performance of drilling water level measurement device directly affects the efficiency and data precision of relevant work.

[0003] At present, existing drilling water level measurement devices mainly include tape type water measuring device, floating ball type water measuring device and pressure sensor type water measuring device. Among them, the tape type water measuring device is a relatively traditional measuring equipment, which is usually composed of a tape with scale and a weight at the bottom. During measurement, the weight is slowly put into the drill hole, and when the weight touches the water surface, the water level depth is determined by reading the scale on the tape. However, this device cannot lock the pulled tape, and the process of manually lowering and lifting the tape is time-consuming and laborious, especially for deep drill holes, manual hand holding of the tape is required, and the operation difficulty is significantly increased. SUMMARY

[0004] To solve the above problems, i.e. to solve the problems raised in the background technology, the utility model provides a water measuring device convenient to measure drilling water level, which comprises a connecting seat, a tape is wound on the inside of the connecting seat, a detector is connected to the end of the tape, a bracket is installed on the outer wall of the connecting seat, a clamping seat is assembled on the outer wall of the bracket, a detector is inserted into the inside of the clamping seat,

[0005] a constraint assembly is assembled on the inner side wall of the connecting seat, the constraint assembly comprises a supporting part and a pressing part, the supporting part is used to fix on the inner side wall of the connecting seat and fix the pressing part, and the pressing part is used to fix the tape;

[0006] a driving assembly is assembled on the outer side wall of the connecting seat, the driving assembly comprises a motor, a first rotating shaft is assembled on the shaft end of the motor, a rotating wheel is arranged at the end of the first rotating shaft, the rotating wheel is connected to the first rotating shaft through a rotating part, a bending part is arranged between the rotating part and the first rotating shaft, and the bending part is used to fold and move the rotating part at the end of the first rotating shaft;

[0007] when the rotating wheel abuts against the outer wall of the connecting seat through the rotating part, the rotating wheel rotates clockwise to make the tape quickly wind in the connecting seat.

[0008] Preferably, the support part comprises:

[0009] The support is fixedly connected with sliding blocks on both sides, and the sliding blocks are connected with the connecting seat through a sliding groove. The sliding groove is arranged on the inner side wall of the connecting seat and is used for fixing the support. The support is used for fixing the pressing part.

[0010] Preferably, the pressing part comprises:

[0011] The support block is fixedly connected to the upper center position of the support. First, second and third inner cavities are arranged in the support block from top to bottom. The first, second and third inner cavities are communicated with each other. A connecting rod is connected to the inside of the support block. The connecting rod penetrates the first and second inner cavities and points to the third inner cavity. The upper and lower ends of the connecting rod are fixedly connected to the rotating disc and the pressing block, respectively. The pressing block is connected in the third inner cavity, and the pressing block rotates in the second inner cavity.

[0012] The first inner cavity is a square cavity, the second inner cavity is a circular cavity, and the third inner cavity is an elliptical cavity. The third inner cavities are communicated in the transverse direction of the support block, and the communicated third inner cavities are used for allowing the ruler to pass through.

[0013] Preferably, a first elastic member is arranged in the first inner cavity. A baffle is attached to the lower side of the first elastic member. The baffle is fixedly connected to the outer wall of the connecting rod near the lower side of the first inner cavity. The baffle is used for allowing the pressing block fixedly connected to the lower side of the connecting rod to be in the second inner cavity through the elastic force of the first elastic member.

[0014] Preferably, the rotating part comprises:

[0015] A groove is arranged above the first rotating shaft.

[0016] A first outer cylinder is sleeved on the outer wall of the groove. A second elastic member is arranged at the connection position of the first outer cylinder and the groove. The upper side of the first rotating shaft is fixedly connected with a first sector gear.

[0017] A second outer cylinder is arranged in the inside of the second outer cylinder. A second rotating shaft is connected with the second outer cylinder through a bearing. A rotating wheel and a second sector gear are fixedly connected to the two sides of the second rotating shaft, respectively. The second sector gear is engaged with the first sector gear. The second outer cylinder is connected with the first outer cylinder.

[0018] Preferably, the second outer cylinder is connected with the first outer cylinder through a hinge. An insertion slot is arranged on the upper surface of the first sector gear. A top block is fixedly connected to the end of the second sector gear.

[0019] When the top block is inserted into the insertion slot, the rotating wheel is disconnected from the connecting seat.

[0020] The beneficial technical effects of the utility model are that the constraint assembly is installed on the connecting seat of the water measuring device, the extended ruler is fixed, the detection data of the ruler can be checked at any time, the ruler does not need to be held by hand, the operation difficulty is reduced, meanwhile, the driving assembly is installed on one side of the water measuring device, when the rotating wheel on the driving assembly is in contact with the inside of the connecting seat through the bending part, the connecting seat can be turned when the rotating wheel rotates, the ruler can be conveniently wound in the inside of the connecting seat, the time and labor saving effect is achieved, and when the rotating wheel is separated from the connecting seat through the bending part, the constraint assembly can conveniently lock the ruler. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 The structure schematic diagram of the water measuring device convenient for measuring the water level of a borehole is shown.

[0022] Figure 2 The structure schematic diagram of the constraint assembly in the water measuring device is shown. Figure 1

[0023] Figure 3 The internal structure schematic diagram of the support block in the water measuring device is shown. Figure 2

[0024] Figure 4 The sectional view of the support block in the water measuring device is shown. Figure 3

[0025] Figure 5 The connecting structure schematic diagram of the pressing block in the water measuring device is shown.

[0026] Figure 6 The structure schematic diagram of the first rotating shaft in the water measuring device is shown. Figure 1

[0027] The internal connecting schematic diagram of the first outer cylinder and the second outer cylinder in the water measuring device is shown. Figure 7 Figure 6 The reference signs 1, connecting seat; 2, ruler; 3, clamping seat; 4, detector; 5, support; 6, motor; 7, support seat; 8, sliding groove; 9, sliding block; 10, support block; 11, baffle; 13, connecting rod; 14, rotating disc; 15, first elastic member; 16, pressing block; 17, first inner cavity; 18, second inner cavity; 19, third inner cavity; 20, first rotating shaft; 21, first outer cylinder; 22, second elastic member; 23, recess; 24, first sector gear; 25, insertion slot; 26, top block; 27, second sector gear; 28, second outer cylinder; 29, rotating wheel; 30, second rotating shaft; 31, bearing; 32, hinge. DETAILED DESCRIPTION

[0028]

[0029] ​​​​​The preferred embodiments of the present application will be described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present application, and are not intended to limit the protection scope of the present application.

[0030] Please refer to Figures 1 to 7 As shown in the figure, the utility model provides a kind of water measuring device for facilitating the measurement of borehole water level, connecting seat 1 is connected with ruler 2 by winding in the inside of connecting seat 1, detector 4 is connected at the end of ruler 2, support 5 is installed on the outer wall of connecting seat 1, clamping seat 3 is equipped on the outer wall of support 5, detector 4 is inserted in the inside of clamping seat 3.

[0031] The core basic components of water measuring device include connecting seat 1, ruler 2, detector 4, support 5 and clamping seat 3. The circular baffle on both sides of connecting seat 1 forms winding cavity, and the inside is transversely penetrated by rotating shaft (both sides are rotatably connected with circular baffle through bearing), one end of ruler 2 is fixed to the outer wall of rotating shaft, and the whole is wound on the shaft; the other end passes through the opening at the bottom of connecting seat 1 to connect detector 4. Support 5 is symmetrically installed on the outer wall below the circular baffle on both sides of connecting seat 1, and is placed on the ground through the bottom support surface, to realize the overall stable support of the device; clamping seat 3 is fixed to the outer side wall of support 5 by bolt, and the internal slot thereof is matched with the shape of detector 4, detector 4 is inserted in clamping seat 3 in non-working state, to realize storage positioning, and the water measuring device is existing equipment, and the specific innovation is as follows:

[0032] Constraint assembly, constraint assembly is assembled to the inner side wall of connecting seat 1, constraint assembly includes support part and pressing part, support part is used to be fixed in the inner side wall of connecting seat 1, and fixed pressing part, and pressing part is used to fix ruler 2;

[0033] Driving assembly, driving assembly is assembled to the outer side wall of connecting seat 1, driving assembly includes motor 6, motor 6 is installed at the position of the edge of the outer side wall of connecting seat 1, when the external power supply of motor 6 is connected, motor 6 starts to work, the shaft end of motor 6 is equipped with first rotating shaft 20, the end of first rotating shaft 20 is provided with rotating wheel 29, when motor 6 works, rotating wheel 29 rotates through first rotating shaft 20, rotating wheel 29 is connected with rotating part first rotating shaft 20 through rotating part, and the bending part is arranged between rotating part and first rotating shaft 20, the bending part is used to make rotating part fold and move at the end of first rotating shaft 20, and the bending part can make first rotating shaft 20 right angle bending and make first rotating shaft 20 vertical state;

[0034] Please refer to Figures 2 to 5 Specifically, support part includes:

[0035] Support 7, both sides of support 7 are fixedly connected with sliding block 9, sliding block 9 is connected with connecting seat 1 through sliding slot 8, wherein sliding slot 8 is opened in the inner side wall of connecting seat 1, and is used to fix support 7, and support 7 is used to fix pressing part.

[0036] And, the inside of the first inner cavity 17 is provided with the first elastic member 15, the lower part of the first elastic member 15 is attached with the baffle 11, the baffle 11 is fixed to the outer wall of the connecting rod 13 near the lower part of the first inner cavity 17, and the baffle 11 is used to make the pressing block 16 fixed to the lower part of the connecting rod 13 through the elastic force of the first elastic member 15 to be in the second inner cavity 18.

[0037] By adopting the above technical scheme, the support of the support 7 is formed by the sliding block 9 fixed on both sides and the sliding groove 8 of the inner wall of the connecting seat 1. The sliding groove 8 is axially provided along the inner wall of the connecting seat 1, and the cross section of the sliding block 9 is T-shaped, which is matched with the T-shaped groove of the sliding groove 8, and the two are matched with a gap (the gap is 0.1-0.2mm). This matching mode has two effects: one is adjustability, the support 7 can slide axially along the sliding groove 8, and the position of the pressing part can be adjusted according to the thickness change of the winding layer when the ruler 2 is wound, so as to ensure that the pressing force of the ruler 2 always acts on the surface of the winding layer; the other is stable positioning, after sliding to the position, the inner wall of the sliding groove 8 can be clamped by the clamping screw on the side of the sliding block 9, so as to fix the support 7 and avoid displacement due to vibration during work.

[0038] Further, the pressing part comprises:

[0039] The support block 10 is fixed to the upper center position of the support 7, the first inner cavity 17, the second inner cavity 18 and the third inner cavity 19 are sequentially provided in the support block 10 from top to bottom, the first inner cavity 17, the second inner cavity 18 and the third inner cavity 19 are communicated with each other, the connecting rod 13 is connected to the inside of the support block 10, the connecting rod 13 penetrates through the first inner cavity 17 and the second inner cavity 18 and points to the third inner cavity 19, the upper and lower ends of the connecting rod 13 are respectively fixed to the rotating disc 14 and the pressing block 16, the pressing block 16 is clamped in the third inner cavity 19, and the pressing block 16 rotates in the second inner cavity 18.

[0040] The shape of the first inner cavity 17 is a square cavity, the shape of the second inner cavity 18 is a circular cavity, and the shape of the third inner cavity 19 is an elliptical cavity. The third inner cavities 19 are communicated in the transverse direction of the support block 10, and the communicated third inner cavities 19 are used for the ruler 2 to pass through.

[0041] By adopting the above technical scheme, the support block 10 of the pressing part is fixed to the upper center position of the support 7 by welding, forming an integrated structure. The first inner cavity 17 (square), the second inner cavity 18 (circular) and the third inner cavity 19 (elliptical) in the support block 10 are communicated with each other, forming a movement channel of the connecting rod 13. The connecting rod 13 penetrates through the support block 10, and the upper and lower ends of the connecting rod 13 are respectively fixed to the rotating disc 14 (screwed) and the pressing block 16 (keyed), forming a “rotating disc- connecting rod-pressing block” linkage assembly.

[0042] Specific operation mode: the first elastic member 15 (using compression spring) in the first inner cavity 17 is always in pre-compressed state, the elastic force of which acts downward on the baffle 11, drives the connecting rod 13 to move downward along the second inner cavity 18 (circular cavity and connecting rod 13 clearance fit, play a guiding role), and finally makes the pressing block 16 tightly press the surface of the ruler 2 in the third inner cavity 19. Since the third inner cavity 19 is elliptical and transversely communicated, the ruler 2 can pass through it, and the bottom of the pressing block 16 is processed with anti-skid texture on the surface of the ruler 2, which cooperates with the elastic force of the first elastic member 15 to realize the elastic compression constraint of the ruler 2. The effect of this constraint is that the ruler 2 will not deviate laterally or twist during the winding process, ensuring the neatness during winding; at the same time, the elastic compression can adapt to the slight change of the thickness of the ruler 2, avoiding excessive extrusion leading to damage of the ruler.

[0043] Embodiment 2

[0044] Referring to Figure 6 and Figure 7 , specifically: the rotating part comprises:

[0045] the groove 23 is arranged above the first shaft 20;

[0046] the first outer cylinder 21 is sleeved on the outer wall of the groove 23, and the connecting part of the first outer cylinder 21 and the groove 23 is provided with the second elastic member 22; the upper part of the first shaft 20 is fixedly connected with the first sector gear 24;

[0047] the second outer cylinder 28 is internally provided with the second shaft 30, the second shaft 30 is connected with the second outer cylinder 28 through the bearing 31, and the two sides of the second shaft 30 are respectively fixedly connected with the rotating wheel 29 and the second sector gear 27; the second sector gear 27 is connected with the first sector gear 24 in meshing mode; wherein, the second outer cylinder 28 is connected with the first outer cylinder 21.

[0048] By adopting the above technical scheme, the rotating part realizes the working / detaching switching of the rotating wheel 29 through the meshing and linkage of multiple components, and the specific structure cooperation is as follows:

[0049] the first outer cylinder cooperates with the first shaft: the first outer cylinder 21 is sleeved on the outer wall of the groove 23 above the first shaft 20, and the gap fit therebetween; the second elastic member 22 (stretching spring) at the connecting part is fixed to the bottom of the groove 23 at one end, and connected to the inner wall of the first outer cylinder 21 at the other end, so that the first outer cylinder 21 always has upward restoring force. The first sector gear 24 fixedly connected to the upper part of the first outer cylinder 21 is meshed with the second sector gear 27 in the second outer cylinder 28, thereby forming gear transmission.

[0050] The second outer cylinder 28 is matched with the rotating wheel 29: the second rotating shaft 30 inside the second outer cylinder 28 is connected with the inner wall of the second outer cylinder 28 through the deep groove ball bearing 31, so as to realize low-friction rotation; the two sides of the second rotating shaft 30 are respectively fixed with the rotating wheel 29 (key connection) and the second sector gear 27 (welding fixed connection), so as to form a "rotating wheel-second rotating shaft-second sector gear" linkage assembly. At the same time, the second outer cylinder 28 is connected with the first outer cylinder 21 through the hinge 32, and can rotate around the hinge 32 to adjust the angle.

[0051] Further, the second outer cylinder 28 is connected with the first outer cylinder 21 through the hinge 32, the upper surface of the first sector gear 24 is provided with the insertion slot 25, and the end of the second sector gear 27 is fixedly connected with the top block;

[0052] When the top block 26 is inserted into the insertion slot 25, the rotating wheel 29 is separated from the connecting seat 1.

[0053] The implementation principle of the embodiment is that when the rotating wheel 29 is abutted on the outer wall of the connecting seat 1 through the rotating part, the rotating wheel 29 rotates clockwise to make the ruler 2 quickly wind in the connecting seat 1.

[0054] By adopting the above technical scheme, the locking and cooperation of the top block and the insertion slot: the insertion slot 25 provided on the upper surface of the first sector gear 24 is in size adaptation with the top block 26 fixedly connected at the end of the second sector gear 27. When it is needed to separate the rotating wheel 29 from the connecting seat 1, the first outer cylinder 21 is pulled upward, the second elastic member 22 is compressed, the first sector gear 24 is driven to rise, the top block 26 at the end of the second sector gear 27 is inserted into the insertion slot 25, at this time, the gear engagement relationship is maintained, but the second outer cylinder 28 can be turned upward through the hinge 32, thereby driving the rotating wheel 29 to separate from the outer wall of the connecting seat 1, so as to realize the double effects of transmission locking and separation.

[0055] Working principle:

[0056] 1. Preparation stage: place the device on the ground of the water measuring point through the support 5, unlock the clamping seat 3 to take out the detector 4; adjust the position of the support 7 of the constraint assembly, so that the ruler 2 passes through the third inner cavity 19 of the pressing part, and the pressing block 16 is pressed tightly to the ruler 2 under the action of the first elastic member 15; bend the bending part of the driving assembly, so that the first rotating shaft 20 is bent at right angles, and the rotating wheel 29 abuts on the outer side wall of the connecting seat 1, wherein the edge of the rotating wheel 29 is made of rubber, and the rubber has a certain friction. When the rotating wheel 29 rotates, the connecting seat 1 is driven to rotate, so as to realize the winding of the ruler.

[0057] 2. The ruler is released and the stage: manually unlock the restraint assembly (pull the baffle 11 upward, compress the first elastic member 15, make the pressing block 16 disengage from the ruler 2), slowly release the probe 4, the ruler 2 drives the rotating shaft in the connecting seat 1 to rotate counterclockwise, until the probe 4 contacts the water surface (confirmed by the signal feedback of the probe 4). The rotating disc 14 can be released at any time during the release process, the pressing block 16 is pressed tightly on the ruler 2 again, so that the ruler 2 is locked at any position, and the water depth data is read conveniently.

[0058] 3. The ruler recovery stage: connect the external power supply of the motor 6, the motor 6 drives the first rotating shaft 20 to rotate clockwise, and the rotating part is transmitted through the bending part. Since the rotating wheel 29 abuts against the outer wall of the connecting seat 1, when the rotating wheel 29 rotates clockwise, the rotating shaft in the connecting seat 1 is driven to rotate clockwise synchronously through friction, so that the ruler 2 is quickly wound and recovered. During the recovery process, the pressing block 16 of the restraint assembly is always pressed tightly on the ruler 2, so that the ruler 2 is not loose or deviated during winding, and the ruler 2 is wound neatly on the rotating shaft.

[0059] 4. The storage stage: after the ruler is recovered, the motor 6 is turned off, the top block 26 of the rotating part is inserted into the slot 25, the second outer cylinder 28 is turned over to make the rotating wheel 29 disengage from the connecting seat 1; the probe 4 is inserted into the clamping seat 3; the bending part is adjusted to make the first rotating shaft 20 in a vertical state, so that the occupied space of the device is reduced, and the device is convenient for subsequent carrying or storage.

[0060] Although the utility model has been described with reference to the preferred embodiments, various improvements can be made and equivalent parts can be replaced without departing from the scope of the utility model, especially, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way. The utility model is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

[0061] In addition, it should be noted that, in the description of the utility model, unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0062] The technical scheme of the utility model has been described in combination with the preferred embodiments shown in the drawings, but the person skilled in the art can easily understand that the protection scope of the utility model is obviously not limited to these specific embodiments. The person skilled in the art can make equivalent changes or replacements to the related technical features without deviating from the principles of the utility model, and the technical schemes after the changes or replacements will all fall within the protection scope of the utility model.

Claims

1. A water measuring device for facilitating the measurement of water level in a borehole, comprising a connecting seat (1), a ruler (2) is wound on the inside of the connecting seat (1), a detector (4) is connected to the end of the ruler (2), a support (5) is installed on the outer wall of the connecting seat (1), a clamping seat (3) is assembled on the outer wall of the support (5), the detector (4) is inserted into the clamping seat (3), characterized in that: a constraint assembly is assembled on the inner side wall of the connecting seat (1), the constraint assembly comprises a support part and a pressing part, the support part is used for fixing on the inner side wall of the connecting seat (1) and fixing the pressing part, and the pressing part is used for fixing the ruler (2); a driving assembly is assembled on the outer side wall of the connecting seat (1), the driving assembly comprises a motor (6), a first rotating shaft (20) is assembled on the shaft end of the motor (6), a rotating wheel (29) is arranged at the end of the first rotating shaft (20), the rotating wheel (29) is connected through a rotating part, a bending part is arranged between the rotating part and the first rotating shaft (20), and the bending part is used for folding and moving the rotating part at the end of the first rotating shaft (20); when the rotating wheel (29) abuts against the outer wall of the connecting seat (1) through the rotating part, the rotating wheel (29) rotates clockwise to make the ruler (2) quickly wind on the connecting seat (1).

2. The water measuring device for measuring water level in a borehole according to claim 1, wherein The support part comprises: a support base (7), sliding blocks (9) are fixedly connected on both sides of the support base (7), the sliding blocks (9) are connected with the connecting seat (1) through clamping and connecting of sliding grooves (8), the sliding grooves (8) are arranged on the inner side wall of the connecting seat (1) and are used for fixing the support base (7), and the support base (7) is used for fixing the pressing part.

3. The water level measuring device according to claim 2, wherein The pressing part comprises: a support block (10), the support block (10) is fixedly connected to the upper center position of the support base (7), first, second and third inner cavities (17, 18 and 19) are arranged in the support block (10) from top to bottom, the first, second and third inner cavities (17, 18 and 19) are communicated with each other, a connecting rod (13) is connected to the inside of the support block (10) in an up-down manner, the connecting rod (13) penetrates through the support block (10) and points to the third inner cavity (19) through the first and second inner cavities (17 and 18), the upper and lower ends of the connecting rod (13) are fixedly connected to a rotating disc (14) and a pressing block (16) respectively, the pressing block (16) is clamped in the third inner cavity (19), and the pressing block (16) rotates in the second inner cavity (18); wherein the first inner cavity (17) is a square cavity, the second inner cavity (18) is a circular cavity, and the third inner cavity (19) is an elliptical cavity, the third inner cavities (19) in the support block (10) are communicated in a transverse direction, and the communicated third inner cavities (19) are used for allowing the ruler (2) to pass through.

4. The water level measuring device of claim 3, wherein: The first inner cavity (17) is internally provided with a first elastic member (15), a baffle (11) is attached below the first elastic member (15), the baffle (11) is fixed to the outer wall of the connecting rod (13) near the lower part of the first inner cavity (17), and the baffle (11) is used to make the pressing block (16) fixed below the connecting rod (13) be in the second inner cavity (18) through the elastic force of the first elastic member (15).

5. The water level measuring device of claim 4, wherein, The rotating part comprises: A groove (23) is arranged above the first rotating shaft (20); A first outer cylinder (21) is sleeved on the outer wall of the groove (23), a second elastic member (22) is arranged at the connection between the first outer cylinder (21) and the groove (23), a first sector gear (24) is fixed to the upper part of the first rotating shaft (20); A second outer cylinder (28) is internally provided with a second rotating shaft (30), the second rotating shaft (30) is connected with the second outer cylinder (28) through a bearing (31), a rotating wheel (29) and a second sector gear (27) are respectively fixed to the two sides of the second rotating shaft (30), the second sector gear (27) is meshed and connected with the first sector gear (24), and the second outer cylinder (28) is connected with the first outer cylinder (21).

6. The water level measuring device of claim 1, wherein, The second outer cylinder (28) is connected with the first outer cylinder (21) through a hinge (32), the upper surface of the first sector gear (24) is provided with a slot (25), and the end of the second sector gear (27) is fixed with a top block (26). When the top block (26) is inserted into the slot (25), the rotating wheel (29) is disconnected from the connecting seat (1).

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