Dam water level detection alarm device

Abstract

The invention relates to the technical field of water level detection equipment, in particular to a dam water level detection alarm device which comprises a flood discharge mechanism, and the flood discharge mechanism comprises a box body and is used for discharging flood when a dam floods. A second bevel gear drives a connecting shaft to rotate, so that a shifting rod can be driven to rotate, the shifting rod can abut against a moving plate in a reciprocating mode, the moving plate and a sliding column slide back and forth on a limiting frame, the sliding column drives a sliding rail column at the end to move together, and therefore a sliding seat is driven to slide in the sliding rail column in a reciprocating mode; according to the water level alarm device, the two rotating rods are driven to swing in a reciprocating mode, so that the rotating rods can drive the knocking blocks at the bottom ends and the opposite inner walls of the [-shaped steel plates to knock back and forth to make a sound, and therefore when the water level rises fast, the device can make a sound to warn workers to take other prevention and treatment measures, and the device can automatically give an alarm sound under the condition that electricity is not used; therefore, the water level sensor can still play a role in reminding when the power is cut off or the water level sensor loses effect.

Description

Technical Field

[0001] The invention relates to the technical field of water level detection equipment, in particular to a dam water level detection alarm device. Background Art

[0002] When the water level of the dam is high, the embankment is soaked in water until it is saturated, and the water content of the rock and soil increases sharply, resulting in a significant reduction in shear strength. When the water level drops suddenly, the soil loses the supporting force provided by the original water body, and the embankment is prone to slippage and collapse. When the water level drops, the groundwater in the dam body will have a downward component velocity, especially when the water level drops suddenly, the anti-slip force generated by the water pressure decreases, but the dam body has a large horizontal and vertical permeability, which will affect the stability of the dam. Many dam constructions ignore the hazards of groundwater flow, and the hazards of high groundwater levels to dams are equivalent to floods, and they need to be modified to divert the flow to avoid damaging the slopes. Therefore, it is necessary to monitor the water level of the dam.

[0003] Water level changes may also increase the risk of natural disasters. For example, during the rainy season, if the water level in a reservoir is too high, it is necessary to release water in advance to free up storage capacity for possible floods. Existing dam water level detection is mostly carried out through water level sensors. When a power outage or sensor damage occurs due to a flood, the water level detection device will fail, making it difficult to warn people, which may lead to flood disasters. Existing detection and alarm devices are difficult to release and block the rising flood in time. Summary of the invention

[0004] The purpose of the present invention is to provide a dam water level detection alarm device to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A dam water level detection alarm device, comprising:

[0007] A flood discharge mechanism, the flood discharge mechanism comprising a box body, and the flood discharge mechanism is used to discharge flood water when the dam is flooded;

[0008] The floating mechanism is fixedly arranged on the box body;

[0009] An alarm mechanism is fixedly arranged inside the box body, and is used to give an alarm prompt when the water level of the dam rises;

[0010] The water blocking mechanism is fixedly arranged on the top of the box body, and is used for blocking the rising water of the dam.

[0011] Furthermore, the flood discharge mechanism comprises:

[0012] A chute is provided on the top of the box;

[0013] The flood discharge hole is opened inside the box;

[0014] The propeller blade is arranged inside the flood discharge hole;

[0015] A speed shaft, fixedly connected to the center of the propeller blade;

[0016] The positioning cylinder is rotatably sleeved on the outside of the speed shaft, and the positioning cylinder is fixedly connected to the inner wall of the box body; the bevel gear 1 is fixedly sleeved on the outer wall of the speed shaft;

[0017] Bevel gear two is meshingly connected to one side of bevel gear one.

[0018] Furthermore, the flood discharge mechanism comprises:

[0019] The connecting shaft is fixedly connected to the center of the second bevel gear, and the connecting shaft is rotatably connected to the positioning cylinder; the rotating disk is fixedly connected to the top of the connecting shaft;

[0020] A lever, fixedly connected to the top of the turntable;

[0021] The first synchronous pulley is fixedly connected to the center of the turntable.

[0022] Furthermore, a filter frame is fixedly connected to the side wall of the box.

[0023] Furthermore, the floating mechanism comprises:

[0024] The limit seat is fixedly connected to the top of the box;

[0025] A sliding plate is slidably sleeved in the limiting seat;

[0026] The air bag is fixedly arranged at the bottom end of the sliding plate.

[0027] Furthermore, the floating mechanism comprises:

[0028] A tooth plate 1, fixedly connected to the side wall of the sliding plate;

[0029] The first tooth column is rotatably connected to the top of the limit seat and meshed with the first tooth plate;

[0030] A screw rod is fixedly connected to the center of the first gear column;

[0031] The closing plate is screwed together with the screw.

[0032] Furthermore, the alarm mechanism comprises:

[0033] A movable plate is arranged inside the box;

[0034] A sliding column fixedly connected to the side wall of the moving plate;

[0035] The slide rail column is fixedly connected to the end of the sliding column;

[0036] The sliding seat is slidably sleeved inside the slide rail column;

[0037] There are two rotating rods, one end of which is rotatably connected to the sliding seat;

[0038] The knocking block is fixedly connected to the bottom ends of the two rotating rods;

[0039] The U-shaped steel plate is rotatably connected to the rotating rod, and the U-shaped steel plate is fixedly connected to the inner wall of the box body.

[0040] Furthermore, the alarm mechanism includes:

[0041] The limiting frame is slidably sleeved outside the sliding column;

[0042] There are two reset springs, one end of each of which is fixedly connected to the limiting frame, and the other end is fixedly connected to the moving plate. Furthermore, the water blocking mechanism includes:

[0043] The rotating column is rotatably connected inside the box body;

[0044] The worm is fixedly connected to the top end of the rotating column;

[0045] The second synchronous pulley is fixedly sleeved on the outer wall of the rotating column;

[0046] One end of the synchronous belt is sleeved on the second synchronous pulley, and the other end is sleeved on the first synchronous pulley;

[0047] The worm gear is meshed and connected to one side of the worm;

[0048] The driving shaft is fixedly connected to the central position of the worm gear;

[0049] There are three second tooth columns, which are fixedly sleeved on the outer wall of the driving shaft at equal distances;

[0050] There are three second tooth plates, which are all meshed and connected to the second tooth columns;

[0051] The lifting plate is fixedly connected to the side wall of the second tooth plate;

[0052] The pushing roller is rotatably connected to the top of the lifting plate;

[0053] The water blocking plate is rotatably connected to the top of the box body, and the bottom of the water blocking plate is slidably abutted against the pushing roller.

[0054] Furthermore, the water blocking mechanism includes:

[0055] The limiting plate is fixedly connected to the side wall of the lifting plate;

[0056] The moving seat is slidably sleeved on the limiting plate;

[0057] The adjusting lead screw is screwed and connected in the moving seat and is rotationally connected to the box body;

[0058] There are two limiting columns, both of which are slidably and embeddedly connected to the moving seat.

[0059] Compared with the prior art, the beneficial effects of the present invention are:

[0060] 1. When the water level in the dam rises, it will cause the airbag to drive the sliding plate to rise, and then the sliding plate drives the first toothed plate to rise. The first toothed plate can drive the first tooth column to rotate, thereby driving the screw rod to rotate, so that the screw rod drives the closing plate to slide in the chute, thereby driving the closing plate to open the flood discharge hole. Therefore, it is convenient to discharge the flood from the flood discharge hole. By providing a filter frame on the side wall of the box body, it can prevent sundries from flowing through the flood discharge hole and causing blockage of the flood discharge channel.

[0061] 2. When the water flow discharges from the flood discharge hole, it can drive the propeller blades to rotate rapidly, thereby driving the first bevel gear and the second bevel gear to mesh and rotate through the rotating speed shaft. Therefore, the second bevel gear can drive the connecting shaft to rotate, and then the connecting shaft drives the turntable to rotate. Therefore, it can drive the lever to rotate, so that the lever can reciprocally abut against the moving plate. The moving plate and the sliding column slide back and forth on the limiting frame. The sliding column drives the sliding rail column at the end to move together. Therefore, the sliding seat is driven to reciprocally slide in the sliding rail column, thereby driving the two rotating rods to reciprocally swing, so that the rotating rods can drive the knocking block at the bottom and the inner wall of the U-shaped steel plate to knock back and forth to make a sound. In this way, when the water level rises rapidly, the device can make a sound to warn the staff to take other prevention and control measures. This device can automatically generate an alarm sound without using electricity. Therefore, it can still play a reminder role when the power is cut off or the water level sensor fails.

[0062] 3. The rotation of the turntable can drive the first synchronous pulley at the top to rotate. Driven by the synchronous belt, the second synchronous pulley can be driven to rotate together. The second synchronous pulley can drive the rotating column and the worm at the top to rotate together. The worm drives the worm wheel on one side to rotate, so that the worm wheel drives the drive shaft to rotate. The drive shaft drives the three second tooth columns to rotate. The second tooth columns drive the second toothed plate to rise, so that the second toothed plate drives the lifting plate to rise. Then the lifting plate drives the pushing roller at the top to abut against the bottom of the water blocking plate. In this way, the water blocking plate can be driven to stand up, so that it can play a role in blocking the flood, preventing the water level from being too high and overflowing the dam to cause disasters. After the water level drops, the moving seat can be driven to move by the adjusting lead screw, so that the moving seat slides along the limiting column, thereby enabling the lifting plate to move horizontally, so that the second toothed plate is separated from the second tooth column. Then the lifting plate descends under the action of gravity, so that the water blocking plate returns to a flat state again. Description of the Drawings

[0063] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0064] Figure 2 is the overall top view structure schematic diagram of the present invention;

[0065] Figure 3 is the structure schematic diagram of the flood discharge mechanism of the present invention;

[0066] Figure 4 is the structure schematic diagram of the propeller blade of the present invention;

[0067] Figure 5 is the structure schematic diagram of the floating mechanism of the present invention;

[0068] Figure 6 is the structure schematic diagram of the alarm mechanism of the present invention;

[0069] Figure 7 is the structure schematic diagram of the water blocking mechanism of the present invention;

[0070] Figure 8 is the structure schematic diagram of the lifting plate of the present invention.

[0071] In the figure: 100, flood discharge mechanism; 101, box body; 102, sliding groove; 103, flood discharge hole; 104, filter frame; 105, propeller blade; 106, rotation speed shaft; 107, positioning cylinder; 108, bevel gear one; 109, bevel gear two; 110, connecting shaft; 111, turntable; 112, lever; 113, synchronous pulley one; 200, floating mechanism; 201, limit seat; 202, sliding plate; 203, airbag; 204, toothed plate one; 205, toothed column one; 206, screw rod; 207, closing plate; 300, alarm mechanism; 301, moving plate; 302, sliding column; 303, slide rail column; 304, limit frame; 305, return spring; 306, sliding seat; 307, rotating rod; 308, knocking block; 309, C-shaped steel plate; 400, water blocking mechanism; 401, rotating column; 402, worm; 403, synchronous pulley two; 404, synchronous belt; 405, worm gear; 406, driving shaft; 407, toothed column two; 408, toothed plate two; 409, lifting plate; 410, pushing roller; 411, water blocking plate; 412, limit plate; 413, moving seat; 414, adjusting screw rod; 415, limit column. Detailed implementation manners

[0072] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0073] Please refer to Figure 1-8 In an embodiment of the present invention, a dam water level detection and alarm device includes: a flood discharge mechanism 100, the flood discharge mechanism 100 includes a box body 101, and the flood discharge mechanism 100 is used to discharge flood water when the dam is flooded; a floating mechanism 200 is fixedly arranged on the box body 101; an alarm mechanism 300 is fixedly arranged inside the box body 101, and the alarm mechanism 300 is used to give an alarm prompt when the water level of the dam rises; a water blocking mechanism 400 is fixedly arranged on the top of the box body 101, and the water blocking mechanism 400 is used to block the rising water body of the dam; the flood discharge mechanism 100 includes: a chute 102 is opened on the top of the box body 101; a flood discharge hole 103 is opened inside the box body 101; a propeller blade 105 is arranged inside the flood discharge hole 103; a speed shaft 10 6 is fixedly connected to the center of the propeller blade 105; the positioning cylinder 107 is rotatably sleeved on the outside of the speed shaft 106, and the positioning cylinder 107 is fixedly connected to the inner wall of the box body 101; the bevel gear 108 is fixedly sleeved on the outer wall of the speed shaft 106; the bevel gear 2 109 is meshed and connected to one side of the bevel gear 108; the flood discharge mechanism 100 includes: a connecting shaft 110 is fixedly connected to the center of the bevel gear 2 109, and the connecting shaft 110 is rotatably connected to the positioning cylinder 107; a turntable 111 is fixedly connected to the top of the connecting shaft 110; a shifting rod 112 is fixedly connected to the top of the turntable 111; a synchronous pulley 113 is fixedly connected to the center of the turntable 111, and a filter frame 104 is fixedly connected to the side wall of the box body 101.

[0074] Specifically, when the water level in the dam rises, the airbag 203 drives the sliding plate 202 to rise, and then the sliding plate 202 drives the tooth plate 204 to rise. The tooth plate 204 can rotate the tooth column 205, thereby driving the screw 206 to rotate, so that the screw 206 drives the closing plate 207 to slide in the slide groove 102, thereby driving the closing plate 207 to open the flood discharge hole 103, so that the flood is discharged from the flood discharge hole 103. The filter frame 104 is arranged on the side wall of the box body 101 to prevent debris from flowing through the flood discharge hole 103 and causing the flood discharge channel to be blocked;

[0075] When the water flow is discharged from the flood discharge hole 103, it can drive the propeller blade 105 to rotate rapidly, so that the first bevel gear 108 and the second bevel gear 109 can be driven to mesh and rotate through the rotating speed shaft 106. Therefore, the connecting shaft 110 can be driven to rotate by the second bevel gear 109. Then, the connecting shaft 110 drives the turntable 111 to rotate. Therefore, the lever 112 can be driven to rotate, so that the lever 112 can reciprocally abut against the moving plate 301. The moving plate 301 and the sliding column 302 slide back and forth on the limiting frame 304. The sliding column 302 drives the slide rail column 303 at the end to move together. Therefore, the sliding seat 306 is driven to slide reciprocally in the slide rail column 303, so as to drive the two rotating rods 307 to swing reciprocally, so that the rotating rods 307 can drive the knocking block 308 at the bottom and the inner wall of the U-shaped steel plate 309 to knock back and forth to make a sound. In this way, when the water level rises rapidly, the device can make a sound to warn the staff to take other prevention and control measures. This device can automatically generate an alarm sound without using electricity. Therefore, it can still play a reminder role when there is a power outage or the water level sensor fails;

[0076] The rotation of the turntable 111 can drive the first synchronous pulley 113 at the top to rotate. Under the linkage of the synchronous belt 404, the second synchronous pulley 403 can be driven to rotate together. The second synchronous pulley 403 can drive the rotating column 401 and the worm 402 at the top to rotate together. The worm 402 is used to drive the worm gear 405 on one side to rotate, so that the worm gear 405 drives the drive shaft 406 to rotate. The drive shaft 406 is used to drive the three second tooth columns 407 to rotate. The second tooth columns 407 are used to drive the second tooth plate 408 to rise, so that the second tooth plate 408 drives the lifting plate 409 to rise. Then, the lifting plate 409 drives the pushing roller 410 at the top to abut against the bottom of the water blocking plate 411. In this way, the water blocking plate 411 can be driven to stand up, so that it can play a role in blocking the flood, preventing the water level from rising too high and overflowing the dam to cause disasters. After the water level drops, the moving seat 413 can be driven to move by the adjusting screw rod 414, so that the moving seat 413 slides along the limiting column 415, so that the lifting plate 409 moves horizontally, so that the second tooth plate 408 can be separated from the second tooth columns 407. Then, the lifting plate 409 drops under the action of gravity, so that the water blocking plate 411 returns to a flat state again.

[0077] Embodiment 1

[0078] As Figure 6As shown, in this embodiment, the floating mechanism 200 includes: a limit seat 201 fixedly connected to the top of the box body 101; a sliding plate 202 slidably sleeved in the limit seat 201; and an airbag 203 fixedly arranged at the bottom end of the sliding plate 202. The floating mechanism 200 further includes: a first toothed plate 204 fixedly connected to the side wall of the sliding plate 202; a first toothed column 205 rotatably connected to the top of the limit seat 201 and meshed with the first toothed plate 204; a screw rod 206 fixedly connected to the central position of the first toothed column 205; and a closing plate 207 threadedly connected to the screw rod 206. The alarm mechanism 300 includes: a moving plate 301 arranged inside the box body 101; a sliding column 302 fixedly connected to the side wall of the moving plate 301; a sliding rail column 303 fixedly connected to the end of the sliding column 302; a sliding seat 306 slidably sleeved inside the sliding rail column 303; two rotating rods 307, one end of each being rotatably connected to the sliding seat 306; a knocking block 308 fixedly connected to the bottom ends of the two rotating rods 307; and a C-shaped steel plate 309 rotatably connected to the rotating rods 307, the C-shaped steel plate 309 being fixedly connected to the inner wall of the box body 101. A limit frame 304 is slidably sleeved outside the sliding column 302; and two reset springs 305 are provided, one end of each being fixedly connected to the limit frame 304 and the other end being fixedly connected to the moving plate 301.

[0079] In this embodiment, when water flows out from the flood discharge hole 103, it can drive the propeller blade 105 to rotate rapidly, so that the first bevel gear 108 and the second bevel gear 109 can be driven to mesh and rotate through the rotating speed shaft 106. Therefore, the connecting shaft 110 can be driven to rotate by the second bevel gear 109, and then the turntable 111 can be driven to rotate by the connecting shaft 110. Thus, the lever 112 can be driven to rotate, so that the lever 112 can reciprocally abut against the moving plate 301. The moving plate 301 and the sliding column 302 slide back and forth on the limit frame 304, and the sliding rail column 303 at the end is driven to move together by the sliding column 302. Therefore, the sliding seat 306 is driven to slide reciprocally in the sliding rail column 303, so as to drive the two rotating rods 307 to swing reciprocally, so that the rotating rods 307 can drive the knocking block 308 at the bottom end and the relative inner wall of the C-shaped steel plate 309 to knock back and forth to make a sound. In this way, when the water level rises rapidly, the device can make a sound to warn the staff to take other prevention and control measures. This device can automatically generate an alarm sound without using electricity, so it can still play a reminder role when there is a power outage or the water level sensor fails.

[0080] Embodiment Two

[0081] As Figure 7-8As shown, in this embodiment, the water blocking mechanism 400 includes: a rotating column 401 rotatably connected to the inside of the box body 101; a worm 402 is fixedly connected to the top of the rotating column 401; a synchronous pulley 403 is fixedly sleeved on the outer wall of the rotating column 401; one end of the synchronous belt 404 is sleeved with the synchronous pulley 403, and the other end is sleeved with the synchronous pulley 1 113; a worm wheel 405 is meshed and connected to one side of the worm 402; a driving shaft 406 is fixedly connected to the center position of the worm wheel 405; three tooth columns 407 are provided, which are fixedly sleeved on the outer wall of the driving shaft 406 at equal distances; three tooth plates 408 are provided, all of which are meshed and connected with the tooth columns 407; a lifting plate 409 is fixedly connected to the side wall of the tooth plate 408; a pushing roller 410 is rotatably connected to the top of the lifting plate 409; a water blocking plate 411 is rotatably connected to the top of the box body 101, and the bottom of the water blocking plate 411 slides against the pushing roller 410. The limit plate 412 is fixedly connected to the side wall of the lifting plate 409; the moving seat 413 is slidably connected to the limit plate 412; the adjusting screw rod 414 is screwed and connected to the moving seat 413, and is rotatably connected to the box body 101; two limit columns 415 are provided, both of which are slidably embedded in the moving seat 413.

[0082] In a specific implementation, the rotation of the turntable 111 can drive the synchronous pulley 113 at the top to rotate, and under the linkage of the synchronous belt 404, the synchronous pulley 2 403 can be driven to rotate together, and the synchronous pulley 2 403 can drive the rotating column 401 and the worm 402 at the top to rotate together, and the worm 402 is used to drive the worm wheel 405 on one side to rotate, so that the worm wheel 405 drives the driving shaft 406 to rotate, and the driving shaft 406 drives the three tooth columns 2 407 to rotate, and the tooth column 2 407 drives the tooth plate 2 408 to rise, so that the tooth plate 2 408 drives the lifting plate 409 to rise, and then the lifting plate 409 drives the top push roller 410 to collide with the bottom of the water blocking plate 411, which can drive the water blocking plate 411 to stand up, so that it can play a role in blocking floods and prevent the water level from being too high and overflowing the dam to cause disasters. After the water level is lowered, the movable seat 413 can be driven to move by adjusting the screw rod 414, so that the movable seat 413 slides along the limiting column 415, so that the lifting plate 409 moves horizontally, so that the tooth plate 408 and the tooth column 407 are separated, and then the lifting plate 409 descends under the action of gravity, so that the water blocking plate 411 is restored to a flat state.

[0083] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0084] 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 dam water level detection alarm device, characterized in that: Including: A flood discharge mechanism (100), the flood discharge mechanism (100) includes a box body (101), and the flood discharge mechanism (100) is used for flood discharge during the flood of the dam; A floating mechanism (200), fixedly arranged on the box body (101); An alarm mechanism (300), fixedly arranged inside the box body (101), and the alarm mechanism (300) is used for alarm prompts when the water level of the dam rises; A water blocking mechanism (400), fixedly arranged on the top of the box body (101), and the water blocking mechanism (400) is used for blocking the rising water body of the dam.

2. A dam water level detection and alarm device according to claim 1, characterized in that: The flood discharge mechanism (100) includes: A chute (102), opened on the top of the box body (101); A flood discharge hole (103), opened inside the box body (101); Propeller blades (105), arranged inside the flood discharge hole (103); A rotating speed shaft (106), fixedly connected to the center position of the propeller blades (105); A positioning cylinder (107), rotatably sleeved outside the rotating speed shaft (106), and the positioning cylinder (107) is fixedly connected to the inner wall of the box body (101); A first bevel gear (108), fixedly sleeved on the outer wall of the rotating speed shaft (106); A second bevel gear (109), meshed and connected to one side of the first bevel gear (108).

3. A dam water level detection and alarm device according to claim 1, characterized in that: The flood discharge mechanism (100) includes: A connecting shaft (110), fixedly connected to the center position of the second bevel gear (109), and the connecting shaft (110) is rotatably connected to the positioning cylinder (107); A turntable (111), fixedly connected to the top end of the connecting shaft (110); A lever (112), fixedly connected to the top of the turntable (111); A first synchronous pulley (113), fixedly connected to the center position of the turntable (111).

4. A dam water level detection and alarm device according to claim 3, characterized in that: A filter frame (104) is fixedly connected to the side wall of the box body (101).

5. A dam water level detection and alarm device according to claim 3, characterized in that: The floating mechanism (200) Including: A limit seat (201), fixedly connected to the top of the box body (101); A sliding plate (202), slidably sleeved in the limit seat (201); An airbag (203), fixedly arranged at the bottom end of the sliding plate (202).

6. A dam water level detection and alarm device according to claim 5, characterized in that: The floating mechanism (200) includes: A first toothed plate (204), fixedly connected to the side wall of the sliding plate (202); A first toothed column (205), rotatably connected to the top of the limit seat (201), and meshed and connected to the first toothed plate (204); A screw rod (206), fixedly connected to the center position of the first toothed column (205); A closing plate (207), screwed to the screw rod (206).

7. A dam water level detection and alarm device according to claim 5, characterized in that: The alarm mechanism (300) includes: A moving plate (301), arranged inside the box body (101); A sliding column (302), fixedly connected to the side wall of the moving plate (301); A sliding rail column (303), fixedly connected to the end of the sliding column (302); A sliding seat (306), slidably sleeved inside the sliding rail column (303); There are two rotating rods (307), one end of which is rotatably connected to the sliding seat (306); A knocking block (308), fixedly connected to the bottom ends of the two rotating rods (307); A U-shaped steel plate (309), rotatably connected to the rotating rod (307), and the U-shaped steel plate (309) is fixedly connected to the inner wall of the box body (101).

8. A dam water level detection and alarm device according to claim 7, characterized in that: The alarm mechanism (300) comprises: A limiting frame (304) is slidably sleeved on the outside of the sliding column (302); Two return springs (305) are provided, one end of each of which is fixedly connected to the limit frame (304) and the other end of each of which is fixedly connected to the movable plate (301).

9. A dam water level detection and alarm device according to claim 7, characterized in that: The water blocking mechanism (400) comprises: A rotating column (401) is rotatably connected to the interior of the box body (101); A worm (402) is fixedly connected to the top of the rotating column (401); The second synchronous pulley (403) is fixedly sleeved on the outer wall of the rotating column (401); A synchronous belt (404), one end of which is sleeved with the second synchronous pulley (403), and the other end of which is sleeved with the first synchronous pulley (113); A worm wheel (405) meshingly connected to one side of the worm (402); A driving shaft (406) is fixedly connected to the center of the worm gear (405); The second gear column (407) is provided with three teeth, which are fixedly sleeved on the outer wall of the driving shaft (406) at equal distances; The second tooth plate (408) is provided with three teeth, and all of them are meshed and connected with the second tooth column (407); A lifting plate (409) is fixedly connected to the side wall of the second tooth plate (408); A push roller (410) is rotatably connected to the top of the lifting plate (409); The water blocking plate (411) is rotatably connected to the top of the box body (101), and the bottom of the water blocking plate (411) is in sliding contact with the pushing roller (410).

10. A dam water level detection and alarm device according to claim 9, characterized in that: The water blocking mechanism (400) comprises: A limiting plate (412) is fixedly connected to the side wall of the lifting plate (409); The movable seat (413) is slidably sleeved with the limiting plate (412); The adjusting screw rod (414) is screwed into the movable seat (413) and is rotationally connected to the box body (101); There are two limit posts (415), both of which are slidably embedded in the movable seat (413).

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