Water level measuring device

Abstract

The invention relates to the technical field of water level measurement, in particular to a water level measuring device which comprises a protection box, a mounting platform fixedly connected with the lower surface of the protection box, a driving unit arranged outside the protection box, a protection unit driven by the driving unit and a limiting unit driven by the protection unit. The measuring unit is limited through a limiting unit, and the limiting unit is located in the protection box. The device has the beneficial effects that the daily water level acquisition work of operation and maintenance personnel can be reduced, when the water surface is not stable (stormy waves and the like) and rises to the alarm water level, the measurement work does not occur, and only when the water surface stably rises to the alarm water level and the driving unit is driven to perform dual driving, the measurement work does not occur. The protection effect of the protection unit on the internal structure of the protection box and the limiting effect of the limiting unit on the measurement unit can be relieved at the same time, and the measurement operation is automatically triggered.

Description

Technical Field

[0001] The invention relates to the technical field of water level measurement, in particular to a water level measuring device. Background Art

[0002] Changes in water levels in rivers and reservoirs are crucial to people's lives. However, existing water level measurement methods usually involve installing scales or measuring devices in the water, which requires operation and maintenance personnel to collect water level data regularly and indiscriminately, which is relatively cumbersome. In addition, when new operation and maintenance personnel are not familiar with the water level corresponding to the data value, they are likely to miss the best time to adjust the water level, resulting in unexpected events. At the same time, measuring devices placed in water for a long time are easily damaged, shortening the service life of the equipment. Summary of the invention

[0003] In view of the above problems or problems existing in the prior art, the present invention is proposed.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions: a water level measuring device, comprising a protection box, a mounting platform fixedly connected to the lower surface of the protection box, a driving unit arranged outside the protection box, a protection unit driven by the driving unit, a limiting unit driven by the protection unit, and a measuring unit limited by the limiting unit, wherein the limiting unit is located inside the protection box; The bottom plate of the protection box is provided with an opening, and the protection unit is located at the opening and is used for isolating and protecting the interior of the protection box.

[0005] As a preferred solution of the water level measuring device of the present invention, the driving unit is provided with two groups, including a first floating unit and a second floating unit arranged below the protection box, wherein the first floating unit and the second floating unit are arranged below the protection box.

[0006] As a preferred solution of the water level measuring device of the present invention, the first floating unit includes a first position-limiting tube fixedly connected to the lower surface of the protection box, a first fixing port arranged on the side wall of the first position-limiting tube, a first floating plate vertically moving along the first position-limiting tube, a first vertical rack fixedly connected to the upper end of the first floating plate, a first fixing column fixedly connected to the inner wall of the first position-limiting tube at one end, a first movable column movably arranged in the first position-limiting tube, a first spring connecting the first movable column and the inner wall of the first position-limiting tube, a first sliding block engaged with the first vertical rack, and a first gear rotatably connected to the first position-limiting tube; The first fixed column is arranged opposite to the first movable column, and the first gear is arranged opposite to the first fixed opening.

[0007] As a preferred solution of the water level measuring device of the present invention, the second floating unit includes a second position-limiting tube fixedly connected to the lower surface of the protection box, a second fixing port arranged on the side wall of the second position-limiting tube, a second floating plate vertically moving along the second position-limiting tube, a second vertical rack fixedly connected to the upper end of the second floating plate, a second fixing column fixedly connected to the inner wall of the second position-limiting tube at one end, a second movable column movably arranged in the second position-limiting tube, a second spring connecting the second movable column and the inner wall of the second position-limiting tube, a second sliding block engaged with the second vertical rack, and a second gear rotatably connected to the second position-limiting tube; The second fixed column is arranged opposite to the second movable column, and the second gear is arranged opposite to the second fixed opening.

[0008] As a preferred solution of the water level measuring device of the present invention, the protection unit includes a rotating plate rotatably connected to the bottom plate of the protection box, two arc grooves arranged on the rotating plate, two movable columns moving along the two arc grooves, two fixed plates fixedly connected to the bottom plate of the protection box, two movable plates fixedly connected to the upper ends of the two movable columns, a third gear fixedly connected to the lower surface of the rotating plate, a connecting pipe whose upper end is fixedly connected to the lower surface of the third gear, a rectangular plate fixedly connected to the lower end of the connecting pipe, a first limiting assembly driven by the first movable column, a second limiting assembly driven by the second movable column, a first driven assembly driven by the first limiting assembly, and a second driven assembly driven by the second limiting assembly; The two moving plates are simultaneously located between the two fixed plates.

[0009] As a preferred solution of the water level measuring device of the present invention, wherein: the first limiting assembly includes a first mounting plate fixedly arranged on the mounting platform, a first special-shaped block for limiting the rectangular plate, and a third spring connecting the first mounting plate and the first special-shaped block; The second limiting assembly includes a second mounting plate fixedly arranged on the mounting platform, a second special-shaped block for limiting the rectangular plate, and a fourth spring connecting the second mounting plate and the second special-shaped block.

[0010] As a preferred solution of the water level measuring device of the present invention, the first driven component includes a first limit frame fixedly connected to the lower surface of the protection box, a first horizontal plate horizontally moving along the first limit frame, a first pressure plate horizontally moving along the first limit frame, a fifth spring connecting the first pressure plate and the first limit frame, a first rack fixedly connected to the side wall of the first horizontal plate, a second rack fixedly connected to the lower surface of the first horizontal plate, and a first inclined column with one end fixedly connected to the lower surface of the first horizontal plate; The second driven assembly includes a second limiting frame fixedly connected to the lower surface of the protection box, a second horizontal plate horizontally moving along the second limiting frame, a second pressing plate horizontally moving along the second limiting frame, a sixth spring connecting the second pressing plate and the second limiting frame, a third rack fixedly connected to the side wall of the second horizontal plate, a fourth rack fixedly connected to the lower surface of the second horizontal plate, and a second inclined column with one end fixedly connected to the lower surface of the second horizontal plate; The first horizontal plate and the second horizontal plate are arranged coplanar with the third gear.

[0011] As a preferred solution of the water level measuring device of the present invention, the measuring unit includes a group of parallel vertical plates and a fixed frame fixedly connected to the bottom plate of the protection box, a rotating shaft rotatably connected to the group of parallel vertical plates, a traction rope with one end fixedly connected to the rotating shaft and wound around the rotating shaft, and a measuring probe fixedly connected to the other end of the traction rope.

[0012] As a preferred solution of the water level measuring device of the present invention, wherein: the limiting unit comprises two limiting vertical plates fixedly connected to the two moving plates; The two limiting vertical plates are arranged in parallel and are used to limit the two ends of the rotating shaft.

[0013] The beneficial effects of the present invention are as follows: the present invention can reduce the daily water level collection work of the operation and maintenance personnel, and when the water surface does not stably rise to the alarm water level (wind and waves, etc.), no measurement operation occurs. Only when the water surface stably rises to the alarm water level and drives the driving unit to perform double driving, can the protection unit's protective effect on the internal structure of the protection box and the limit unit's limit effect on the measuring unit be released at the same time, and the measurement operation is automatically triggered. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them: Figure 1 It is a schematic diagram of the overall structure of the water level measuring device.

[0015] Figure 2 A partial structure diagram Figure 1 .

[0016] Figure 3 A partial structure diagram Figure 1 Schematic top view of .

[0017] Figure 4 A partial structure diagram Figure 1 A front view schematic diagram of .

[0018] Figure 5 Schematic diagram of partial structural explosion Figure 1 .

[0019] Figure 6 Schematic diagram of partial structural explosion Figure 2 .

[0020] Figure 7 This is a schematic diagram of the protection box structure.

[0021] In the figure: 101, protection box; 101a, opening; 102, installation platform; 200, driving unit; 201, first floating unit; 201a, first limit tube; 201b, first fixed port; 201c, first floating plate; 201d, first vertical rack; 201e, first fixed column; 201f, first movable column; 201g, first spring; 201h, first slider; 201i, first gear; 202, second floating unit; 202a, first Second limit tube; 202b, second fixed port; 202c, second floating plate; 202d, second vertical rack; 202e, second fixed column; 202f, second movable column; 202g, second spring; 202h, second slider; 202i, second gear; 300, protection unit; 301, rotating plate; 302, arc groove; 303, moving column; 304, fixed plate; 305, moving plate; 306, third gear; 307, connecting tube; 308, rectangular plate; 309, first limit assembly; 309a, first mounting plate; 309b, first special-shaped block; 309c, third spring; 310, second limit assembly; 310a, second mounting plate; 310b, second special-shaped block; 310c, fourth spring; 311, first follower assembly; 311a, first limit frame; 311b, first horizontal plate; 311c, first pressing plate; 311d, fifth spring; 311e, first rack; 311f, second rack; 311f ... 11g, first inclined column; 312, second driven assembly; 312a, second limiting frame; 312b, second horizontal plate; 312c, second pressure plate; 312d, sixth spring; 312e, third rack; 312f, fourth rack; 312g, second inclined column; 400, limiting unit; 401, limiting vertical plate; 500, measuring unit; 501, parallel vertical plate; 502, fixing frame; 503, rotating shaft; 504, traction rope; 505, measuring probe. DETAILED DESCRIPTION

[0022] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0023] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0024] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0025] Example 1

[0026] Reference Figure 1 to Figure 7 , is an embodiment of the present invention, which provides a water level measuring device, comprising a protection box 101, a mounting platform 102 fixedly connected to the lower surface of the protection box 101, a driving unit 200 arranged outside the protection box 101, a protection unit 300 driven by the driving unit 200, a limiting unit 400 driven by the protection unit 300, and a measuring unit 500 limited by the limiting unit 400, wherein the limiting unit 400 is located inside the protection box 101, the protection box 101 is fixedly arranged on the riverside and the dam, and the driving unit 200 is arranged facing the water surface; The bottom plate of the protection box 101 is provided with an opening 101 a , and the protection unit 300 is located at the opening 101 a for isolating and protecting the interior of the protection box 101 .

[0027] It should be noted that the minimum height of the drive unit 200 is the height of the water level that requires an alarm. When the water level does not reach the alarm water level, the device does not perform measurements, thereby reducing the data collection work of the operation and maintenance personnel and further reducing the work difficulty of new operation and maintenance personnel.

[0028] Furthermore, the driving unit 200 is provided with two groups, including a first floating unit 201 and a second floating unit 202 which are arranged below the protection box 101 , wherein the first floating unit 201 and the second floating unit 202 are arranged below the protection box 101 .

[0029] Furthermore, the first floating unit 201 includes a first position-limiting tube 201a fixedly connected to the lower surface of the protection box 101, a first fixing port 201b arranged on the side wall of the first position-limiting tube 201a, a first floating plate 201c vertically moving along the first position-limiting tube 201a, a first vertical rack 201d fixedly connected to the upper end of the first floating plate 201c, a first fixed column 201e fixedly connected to the inner wall of the first position-limiting tube 201a at one end, and a first movable column 201e movablely arranged in the first position-limiting tube 201a. 201f, a first spring 201g connecting the first movable column 201f and the inner wall of the first position-limiting tube 201a, a first slider 201h engaged with the first vertical rack 201d, and a first gear 201i rotatably connected to the first position-limiting tube 201a, wherein an adaptive position-limiting groove and a protrusion are provided between the first floating plate 201c and the first position-limiting tube 201a, so that the first floating plate 201c can only be vertically lifted and lowered along the first position-limiting tube 201a, and both sides of the first slider 201h are inclined surfaces; The first fixed column 201e is disposed opposite to the first movable column 201f, and the first gear 201i is disposed opposite to the first fixed opening 201b.

[0030] It should be noted that when the water level rises and drives the first float 201c to rise vertically along the first position limiting tube 201a, the first vertical rack 201d drives the first slider 201h to rise and drives the first gear 201i to rotate. During the rising process of the first slider 201h, the inclined surface on one side of the first slider 201h is squeezed by the first fixed column 201e, and the first movable column 201f is driven to move horizontally along the first position limiting tube 201a through the inclined surface on the other side of the first slider 201h, and the first spring 201g contracts.

[0031] Furthermore, the second floating unit 202 includes a second position-limiting tube 202a fixedly connected to the lower surface of the protection box 101, a second fixing port 202b arranged on the side wall of the second position-limiting tube 202a, a second floating plate 202c vertically moving along the second position-limiting tube 202a, a second vertical rack 202d fixedly connected to the upper end of the second floating plate 202c, a second fixed column 202e fixedly connected to the inner wall of the second position-limiting tube 202a at one end, and a second movable column 202e movably arranged in the second position-limiting tube 202a. 202f, a second spring 202g connecting the second movable column 202f and the inner wall of the second position-limiting tube 202a, a second slider 202h engaged with the second vertical rack 202d, and a second gear 202i rotatably connected to the second position-limiting tube 202a, wherein an adaptive position-limiting groove and a protrusion are provided between the second floating plate 202c and the second position-limiting tube 202a, so that the second floating plate 202c can only be vertically lifted and lowered along the second position-limiting tube 202a, and both sides of the second slider 202h are inclined surfaces; The second fixed column 202e is disposed opposite to the second movable column 202f, and the second gear 202i is disposed opposite to the second fixed opening 202b.

[0032] It should be noted that when the water level rises and drives the second float 202c to rise vertically along the second position limiting tube 202a, the second vertical rack 202d drives the second slider 202h to rise and drives the second gear 202i to rotate. During the rising process of the second slider 202h, one side inclined surface of the second slider 202h is squeezed by the second fixed column 202e, and the other side inclined surface of the second slider 202h drives the second movable column 202f to move horizontally along the second position limiting tube 202a, and the second spring 202g contracts.

[0033] Furthermore, the protection unit 300 includes a rotating plate 301 rotatably connected to the bottom plate of the protection box 101, two arc grooves 302 arranged on the rotating plate 301, two moving columns 303 moving along the two arc grooves 302, two fixed plates 304 fixedly connected to the bottom plate of the protection box 101, two moving plates 305 fixedly connected to the upper ends of the two moving columns 303, a third gear 306 fixedly connected to the lower surface of the rotating plate 301, a connecting pipe 307 fixedly connected to the lower surface of the third gear 306 at the upper end, and a connecting pipe 308 connected to the connecting pipe 309. The lower end of the tube 307 is fixedly connected to a rectangular plate 308, a first limit assembly 309 driven by the first movable column 201f, a second limit assembly 310 driven by the second movable column 202f, a first driven assembly 311 driven by the first limit assembly 309, and a second driven assembly 312 driven by the second limit assembly 310, wherein the two fixed plates 304 are arranged inside the protection box 101, and the rotating plate 301 is arranged at the opening 101a to protect the measuring device inside the protection box 101; The two movable plates 305 are simultaneously located between the two fixed plates 304 and move linearly along the two fixed plates 304 .

[0034] Further, the first limiting assembly 309 includes a first mounting plate 309a fixedly arranged on the mounting platform 102, a first special-shaped block 309b for limiting the rectangular plate 308, and a third spring 309c connecting the first mounting plate 309a and the first special-shaped block 309b, wherein the first special-shaped block 309b includes a first limiting rod for limiting the rectangular plate 308 and a first extrusion rod for driving the first driven assembly 311 to move, and one end of the first extrusion rod is an inclined surface; It should be noted that the horizontal movement of the first movable column 201 f drives the first special-shaped block 309 b to move horizontally along the surface of the installation platform 102 .

[0035] The second limiting assembly 310 includes a second mounting plate 310a fixedly disposed on the mounting platform 102, a second special-shaped block 310b for limiting the rectangular plate 308, and a fourth spring 310c connecting the second mounting plate 310a and the second special-shaped block 310b, wherein the second special-shaped block 310b includes a second limiting rod for limiting the rectangular plate 308 and a second extrusion rod for driving the second driven assembly 312 to move, and one end of the second extrusion rod is a slope.

[0036] It should be noted that the horizontal movement of the second movable column 202 f drives the second special-shaped block 310 b to move horizontally along the surface of the installation platform 102 .

[0037] Furthermore, the first driven assembly 311 includes a first limit frame 311a fixedly connected to the lower surface of the protection box 101, a first horizontal plate 311b horizontally moving along the first limit frame 311a, a first pressure plate 311c horizontally moving along the first limit frame 311a, a fifth spring 311d connecting the first pressure plate 311c and the first limit frame 311a, a first rack 311e fixedly connected to the side wall of the first horizontal plate 311b, a second rack 311f fixedly connected to the lower surface of the first horizontal plate 311b, and a fifth spring 311d connecting the first pressure plate 311c and the first limit frame 311a. The first inclined column 311g is connected to the first horizontal plate 311b, wherein one side wall of the first horizontal plate 311b is in contact with the second limiting tube 202a for limiting, and the first horizontal plate 311b is located between the protection box 101 and the first limiting frame 311a, when the first movable column 201f moves horizontally, the first special-shaped block 309b is synchronously driven to move horizontally, and the first horizontal plate 311b moves horizontally close to the third gear 306 under the cooperation of the second limiting tube 202a and the first extrusion rod, so that the first rack 311e is meshed with the third gear 306 and the second rack 311f is meshed with the second gear 202i at the same time; It should be noted that when the first floating unit 201 drives the first limiting component 309 to move horizontally along the installation platform 102, the first limiting component 309 drives the first driven component 311 to move horizontally along the first limiting frame 311a. It should be noted that the second rack 311f is engaged with the second gear 202i, that is, when only the first floating unit 201 is driven, the first driven component 311 cannot drive the protection unit 300 to rotate, that is, the water level measurement function cannot be achieved.

[0038] The second driven assembly 312 includes a second limit frame 312a fixedly connected to the lower surface of the protection box 101, a second horizontal plate 312b horizontally moving along the second limit frame 312a, a second pressure plate 312c horizontally moving along the second limit frame 312a, a sixth spring 312d connecting the second pressure plate 312c and the second limit frame 312a, a third rack 312e fixedly connected to the side wall of the second horizontal plate 312b, a fourth rack 312f fixedly connected to the lower surface of the second horizontal plate 312b, and a The second inclined column 312g, wherein one side wall of the second horizontal plate 312b is in contact with the first limiting tube 201a and the second horizontal plate 312b is located between the protection box 101 and the second limiting frame 312a. When the second movable column 202f moves horizontally, the second special-shaped block 310b is synchronously driven to move horizontally. The second horizontal plate 312b moves horizontally close to the third gear 306 under the cooperation of the first limiting tube 201a and the second extrusion rod, so that the third rack 312e is meshed with the third gear 306 and the fourth rack 312f is meshed with the first gear 201i; It should be noted that when the second floating unit 202 drives the second limiting assembly 310 to move horizontally along the installation platform 102, the second limiting assembly 310 drives the second driven assembly 312 to move horizontally along the second limiting frame 312a. It should be noted that the fourth rack 312f is engaged with the first gear 201i, that is, when only the second floating unit 202 is driven, the second driven assembly 312 cannot drive the protection unit 300 to rotate, that is, the water level measurement function cannot be achieved.

[0039] The first horizontal plate 311 b and the second horizontal plate 312 b are disposed coplanarly with the third gear 306 .

[0040] It should be noted that when the first rack 311e and the third rack 312e are meshed with the third gear 306 at the same time, the first rack 311e and the third rack 312e move horizontally at the same speed but in opposite directions, driving the third gear 306 to rotate, thereby releasing the protective function of the protection unit 300 on the protective box 101.

[0041] Preferably, when wind and waves drive one of the floating units, it cannot drive the protection unit 300 to release the protection of the protection box 101, that is, it cannot trigger the measurement unit 500 to work. Only when the water surface rises steadily to the alarm water level and the two floating units are driven at the same time, can the protection unit 300's protection of the internal structure of the protection box 101 and the limit unit 400's limit effect on the measurement unit be released, and the measurement operation can be automatically triggered.

[0042] Furthermore, the measuring unit 500 includes a group of parallel vertical plates 501 and a fixed frame 502 fixedly connected to the bottom plate of the protective box 101, a rotating shaft 503 rotatably connected to the group of parallel vertical plates 501, a traction rope 504 one end of which is fixedly connected to the rotating shaft 503 and wound around the rotating shaft 503, and a measuring probe 505 fixedly connected to the other end of the traction rope 504, wherein the traction rope 504 moves vertically along the fixed frame 502.

[0043] Furthermore, the limiting unit 400 includes two limiting vertical plates 401 fixedly connected to the two moving plates 305; The two limiting vertical plates 401 are arranged in parallel and are used to limit the two ends of the rotating shaft 503 , wherein rubber is provided on the surfaces of the two limiting vertical plates 401 and the rotating shaft 503 to increase the friction between the limiting vertical plates 401 and the rotating shaft 503 .

[0044] It should be noted that when the protection unit 300 releases the protection function on the internal structure of the protection box 101, the two limit vertical plates 401 move horizontally away from the two ends of the rotating shaft 503, and the measuring unit 500, under the dead weight of the measuring probe 505, separates from the protection box 101 and passes through the installation platform 102 to realize automatic measurement of the water level.

[0045] When in use, the present invention includes two use states: In the first use state, the water surface is not stable (wind and waves, etc.) and rises to the alarm water level, and the device does not perform measurement operations. Specifically, when the water surface rises unstably and only the driving action of the first floating unit 201 is triggered, the first floating unit 201 drives the first limit assembly 309 to move horizontally along the installation platform 102, and the first limit assembly 309 drives the first driven assembly 311 to move horizontally along the first limit frame 311a, the second rack 311f is meshed with the second gear 202i and the first rack 311e is meshed with the third gear 306, and the first gear 201i is idling and cannot drive the third gear 306 to rotate, that is, the protection unit 300 cannot release the internal structure of the protection box 101. On the other hand, when the water surface rises unstably and only the driving action of the second floating unit 202 is triggered, the second floating unit 202 drives the second limiting assembly 310 to move horizontally along the mounting platform 102, and the second limiting assembly 310 drives the second driven assembly 312 to move horizontally along the second limiting frame 312a, the fourth rack 312f is meshed with the first gear 201i and the third rack 312e is meshed with the third gear 306, but the rotation of the second gear 202i still cannot drive the third gear 306 to rotate, that is, the protective effect of the protection unit 300 on the internal structure of the protection box 101 cannot be released, that is, the water level cannot be measured; The second use state is that the water surface rises steadily to the alarm water level, triggering the device to automatically perform water level measurement operations, which includes two use processes: In the first use process, the driving unit 200 performs dual driving to drive the protection unit 300 to rotate, and releases the protection function of the protection unit 300 on the internal structure of the protection box 101. Specifically, when the water surface rises steadily, the first floating unit 201 and the second floating unit 202 are driven synchronously, and the first floating plate 201c rises vertically along the first limit tube 201a, and the first vertical rack 201d drives the first slider 201h to rise and drives the first gear 201i to rotate. During the rising process of the first slider 201h, one side of the inclined surface of the first slider 201h is squeezed by the first fixed column 201e, and through the first slider 201h The inclined surface on the other side drives the first movable column 201f to move horizontally along the first limiting tube 201a, and the first spring 201g contracts. The horizontal movement of the first movable column 201f drives the first special-shaped block 309b to move horizontally along the upper surface of the mounting platform 102. The first horizontal plate 311b moves horizontally close to the third gear 306 under the cooperation of the second limiting tube 202a and the first extrusion rod, so that the first rack 311e is engaged with the third gear 306 and the second rack 311f is engaged with the second gear 202i. On the other hand, the second floating plate 202c rises vertically along the second limiting tube 202a, and the second vertical rack 202d drives The second slider 202h rises and drives the second gear 202i to rotate. During the rising process of the second slider 202h, one side slope of the second slider 202h is squeezed by the second fixed column 202e, and the other side slope of the second slider 202h drives the second movable column 202f to move horizontally along the second limiting tube 202a. The second spring 202g contracts, and the second movable column 202f moves horizontally to drive the second special-shaped block 310b to move horizontally along the upper surface of the installation platform 102. The second horizontal plate 312b moves horizontally close to the third gear 306 under the cooperation of the first limiting tube 201a and the second extrusion rod, so that the third gear 306 is realized. The rack 312e meshes with the third gear 306, and the fourth rack 312f meshes with the first gear 201i. Under the rotation of the first gear 201i and the second gear 202i, the first rack 311e and the third rack 312e move horizontally at the same speed but in opposite directions, so that the third gear 306 rotates. The rotation of the third gear 306 drives the rotating plate 301 to rotate, and synchronously drives the two arc grooves 302 to rotate. The two moving columns 303 move along the two arc grooves 302, and the two moving plates 305 move horizontally under the limitation of the two fixed plates 304, thereby releasing the protection unit 300 from protecting the internal structure of the protection box 101. In the second usage process, the protection unit 300 rotates and synchronously drives the limit unit 400 to release the limiting effect on the rotating shaft 503, triggering the measuring unit 500 to automatically measure the water level. Specifically, the rotating plate 301 rotates to make the two movable plates 305 move horizontally under the limitation of the two fixed plates 304, and synchronously drives the two limit vertical plates 401 to move horizontally and separate from the two ends of the rotating shaft 503. Under the dead weight of the measuring probe 505, the measuring unit 500 separates from the protection box 101 and passes through the installation platform 102 to realize automatic measurement of the water level.

[0046] In summary, the beneficial effect of a water level measuring device of the present invention is that it can reduce the daily water level collection work of operation and maintenance personnel, and when the water surface does not rise to the alarm water level stably (wind and waves, etc.), no measurement operation occurs. Only when the water surface rises to the alarm water level stably and drives the driving unit 200 to perform dual driving, can the protection unit 300's protective effect on the internal structure of the protection box 101 and the limiting effect of the limiting unit 400 on the measuring unit be released at the same time, and the measurement operation is automatically triggered.

[0047] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A water level measuring device, characterized in that: include, A protection box (101), a mounting platform (102) fixedly connected to the lower surface of the protection box (101), a driving unit (200) arranged outside the protection box (101), a protection unit (300) driven by the driving unit (200), a limiting unit (400) driven by the protection unit (300), and a measuring unit (500) limited by the limiting unit (400), wherein the limiting unit (400) is located inside the protection box (101); The bottom plate of the protection box (101) is provided with an opening (101a); the protection unit (300) is located at the opening (101a) and is used to isolate and protect the interior of the protection box (101).

2. The water level measuring device according to claim 1, characterized in that: The driving unit (200) is provided with two groups, including a first floating unit (201) and a second floating unit (202) arranged below the protection box (101), wherein the first floating unit (201) and the second floating unit (202) are arranged below the protection box (101).

3. The water level measuring device according to claim 2, characterized in that: The first floating unit (201) comprises a first position-limiting tube (201a) fixedly connected to the lower surface of the protection box (101), a first fixing port (201b) arranged on the side wall of the first position-limiting tube (201a), a first floating plate (201c) vertically movable along the first position-limiting tube (201a), a first vertical rack (201d) fixedly connected to the upper end of the first floating plate (201c), a first fixed column (201e) one end of which is fixedly connected to the inner wall of the first position-limiting tube (201a), a first movable column (201f) movably arranged in the first position-limiting tube (201a), a first spring (201g) connecting the first movable column (201f) and the inner wall of the first position-limiting tube (201a), a first sliding block (201h) engaged with the first vertical rack (201d), and a first gear (201i) rotatably connected to the first position-limiting tube (201a); The first fixed column (201e) and the first movable column (201f) are arranged opposite to each other, and the first gear (201i) is arranged opposite to the first fixed port (201b).

4. The water level measuring device according to claim 3, characterized in that: The second floating unit (202) comprises a second position-limiting tube (202a) fixedly connected to the lower surface of the protection box (101), a second fixing port (202b) arranged on the side wall of the second position-limiting tube (202a), a second floating plate (202c) vertically movable along the second position-limiting tube (202a), a second vertical rack (202d) fixedly connected to the upper end of the second floating plate (202c), a second fixed column (202e) one end of which is fixedly connected to the inner wall of the second position-limiting tube (202a), a second movable column (202f) movably arranged in the second position-limiting tube (202a), a second spring (202g) connecting the second movable column (202f) and the inner wall of the second position-limiting tube (202a), a second sliding block (202h) engaged with the second vertical rack (202d), and a second gear (202i) rotatably connected to the second position-limiting tube (202a); The second fixed column (202e) is arranged opposite to the second movable column (202f), and the second gear (202i) is arranged opposite to the second fixed port (202b).

5. The water level measuring device according to claim 4, characterized in that: The protection unit (300) comprises a rotating plate (301) rotatably connected to the bottom plate of the protection box (101), two arc grooves (302) provided on the rotating plate (301), two moving columns (303) moving along the two arc grooves (302), two fixed plates (304) fixedly connected to the bottom plate of the protection box (101), two moving plates (305) fixedly connected to the upper ends of the two moving columns (303), a third gear (306) fixedly connected to the lower surface of the rotating plate (301), A connecting tube (307) whose upper end is fixedly connected to the lower surface of the third gear (306), a rectangular plate (308) fixedly connected to the lower end of the connecting tube (307), a first limiting assembly (309) driven by the first movable column (201f), a second limiting assembly (310) driven by the second movable column (202f), a first driven assembly (311) driven by the first limiting assembly (309), and a second driven assembly (312) driven by the second limiting assembly (310); The two movable plates (305) are simultaneously located between the two fixed plates (304).

6. The water level measuring device according to claim 5, characterized in that: The first limiting component (309) comprises a first mounting plate (309a) fixedly arranged on the mounting platform (102), a first special-shaped block (309b) for limiting the rectangular plate (308), and a third spring (309c) connecting the first mounting plate (309a) and the first special-shaped block (309b); The second limiting assembly (310) comprises a second mounting plate (310a) fixedly arranged on the mounting platform (102), a second special-shaped block (310b) for limiting the rectangular plate (308), and a fourth spring (310c) connecting the second mounting plate (310a) and the second special-shaped block (310b).

7. The water level measuring device according to claim 6, characterized in that: The first driven component (311) comprises a first limit frame (311a) fixedly connected to the lower surface of the protection box (101), a first horizontal plate (311b) moving horizontally along the first limit frame (311a), a first pressure plate (311c) moving horizontally along the first limit frame (311a), a fifth spring (311d) connecting the first pressure plate (311c) and the first limit frame (311a), a first rack (311e) fixedly connected to the side wall of the first horizontal plate (311b), a second rack (311f) fixedly connected to the lower surface of the first horizontal plate (311b), and a first inclined column (311g) having one end fixedly connected to the lower surface of the first horizontal plate (311b); The second driven component (312) comprises a second limit frame (312a) fixedly connected to the lower surface of the protection box (101), a second horizontal plate (312b) horizontally moving along the second limit frame (312a), a second pressure plate (312c) horizontally moving along the second limit frame (312a), a sixth spring (312d) connecting the second pressure plate (312c) and the second limit frame (312a), a third rack (312e) fixedly connected to the side wall of the second horizontal plate (312b), a fourth rack (312f) fixedly connected to the lower surface of the second horizontal plate (312b), and a second inclined column (312g) having one end fixedly connected to the lower surface of the second horizontal plate (312b); The first horizontal plate (311b) and the second horizontal plate (312b) are arranged coplanarly with the third gear (306).

8. The water level measuring device according to claim 7, characterized in that: The measuring unit (500) comprises a group of parallel vertical plates (501) and a fixing frame (502) fixedly connected to the bottom plate of the protection box (101), a rotating shaft (503) rotatably connected to the group of parallel vertical plates (501), a traction rope (504) having one end fixedly connected to the rotating shaft (503) and wound around the rotating shaft (503), and a measuring probe (505) fixedly connected to the other end of the traction rope (504).

9. The water level measuring device according to claim 8, characterized in that: The limiting unit (400) comprises two limiting vertical plates (401) fixedly connected to the two movable plates (305); The two limiting vertical plates (401) are arranged in parallel and are used to limit the two ends of the rotating shaft (503).

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