Water level alarm device for hydraulic engineering construction

Abstract

The invention belongs to the technical field of water conservancy projects, and particularly relates to a water level alarm device for water conservancy project construction, which comprises a base, one side of the upper end surface of the base is fixedly connected with a support column, one side of the upper end of the support column is rotatably provided with a rotating roller, the rotating roller is wound with a rope, and one side of the upper end of the support column is provided with a support roller. The rope is attached to the surface of one side of the supporting roller, a shell is fixedly connected to the end of the rope, an alarm is arranged on one side of the upper end of the shell, two first sliding rods are slidably connected to one side of an inner cavity of the shell, and a lifting plate is fixedly connected to the lower ends of the first sliding rods. By means of the water flow driving type alarm assembly, when the water level rises to the warning line, the edge of the mounting plate is flush with the impact ball, when water flow impacts the floating block, the edge of the mounting plate makes contact with the impact ball, and when the edge of the mounting plate makes contact with the impact ball, a sound is made to remind a construction party to take emergency measures in time.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of water conservancy projects, and particularly relates to a water level alarm device for water conservancy project construction. BACKGROUND

[0002] Water conservancy project construction is an engineering activity of constructing water conservancy facilities according to a design scheme through specific processes and technical means. Such an engineering activity is often carried out in water areas such as lakes and rivers. During the construction process, the water level needs to be monitored in real time to determine whether the water level is close to the warning value, and an alarm is given when the water level is close to the warning value to prompt the construction party to take emergency measures (such as suspending work or reinforcing cofferdams), so as to avoid construction risks such as foundation pit collapse and equipment submersion.

[0003] Patent No. CN215598517U discloses a water level alarm device for water conservancy project construction. The back of the buoyancy plate assembly is movably connected with a warning water level adjusting assembly. The water level alarm device for water conservancy project construction is provided with a buoyancy plate assembly and a water pump assembly. When the water level in the area rises, the buoyancy plate moves upward in the inside of the sliding vertical plate through the sliding block. As the buoyancy plate rises, the pressing block at the top of the buoyancy plate contacts the pressure sensor. After the pressure sensor receives the signal, the signal is transmitted to the control room. The staff in the control room can receive the signal. If there is no operator to manage within a certain time, the water pump starts to work. The water pump transports water to the water outlet connecting pipe through the connecting pipe and discharges it to control the water level in the area. The device can realize automatic drainage function, save a lot of manual water level monitoring time, reduce the working intensity of technical personnel, and solve the problem of needing a large number of manpower for water level monitoring in many places.

[0004] However, the above technical solution still has the following deficiencies in actual application: The buoyancy plate is placed on the water surface. When the water level in the area rises, the buoyancy plate moves upward. As the buoyancy plate rises, the pressing block at the top of the buoyancy plate contacts the pressure sensor. After the pressure sensor receives the signal, the alarm gives an alarm. Although this way can realize water level alarm, in some cases, when the pressure sensor and the alarm are out of power or malfunction, the alarm cannot be given, so that the construction party is difficult to take emergency measures in time, and construction risks are likely to occur. SUMMARY

[0005] In order to make up for the deficiencies of the prior art and solve at least one technical problem proposed in the background art, the application provides a water level alarm device for water conservancy project construction.

[0006] The top end face of described sliding panel also is provided with an interlocking structure, and the interlocking structure of described sliding panel also is provided with an interlocking structure, and the interlocking structure of described sliding panel also is provided with an interlocking structure. The water flow driven alarm assembly includes a sleeve 1 which is evenly distributed around the outer shell in the radial direction and is slidably connected to the outer shell. The inner cavity of the sleeve 1 is slidably connected to a plug rod, and the end of the plug rod is fixedly connected to a collision ball.

[0007] Preferably, one side of the upper end of the pillar is fixedly connected to a motor 1, and the output end of the motor 1 is fixedly connected to the rotating roller.

[0008] Preferably, one end of the plug rod is fixedly connected to spring 2, and the other end of spring 2 is fixedly connected to one end of the inner cavity of sleeve 1.

[0009] Preferably, a locking assembly is further provided on the housing; The locking assembly includes a rotating ring rotatably arranged on one side of the outer wall of the shell, a socket is provided on one side of the rotating ring, a connecting rod is fixedly connected to one side of the lifting plate, a groove is provided on one side of the shell, the connecting rod penetrates the groove of the shell, and the connecting rod can move longitudinally in the groove, and a positioning column is fixedly connected to one side of the lower end surface of the connecting rod, and the positioning column can be inserted into the socket.

[0010] Preferably, the rotating ring is provided with a plurality of connecting rods 3 for one rotation, and one end of the connecting rod 3 is rotatably connected to one end of the sleeve.

[0011] Preferably, a sliding rod four is rotatably provided on one side of the rotating ring, and the sliding rod four is slidably connected to a sleeve two. One end of the sleeve two is rotatably provided on the outer shell, and a spring one is sleeved on one side of the sliding rod four. One end of the spring one is fixedly connected to one end of the sliding rod four, and the other end is fixedly connected to the second end of the sleeve.

[0012] Preferably, the housing is further provided with an anti-interference component; The anti-interference assembly comprises a fixed ring fixedly connected to one side of the outer ring of the shell, a plurality of connecting rods I rotatably arranged at the lower end surface of the fixed ring, a connecting rod II rotatably arranged at one end of the connecting rod I, a traction plate rotatably arranged at one end of the connecting rod II, and a stretch cloth fixedly connected between adjacent two traction plates.

[0013] Preferably, a gear ring is rotatably arranged at one side of the upper end surface of the fixed ring, a gear is fixedly connected to one end of the connecting rod I, the gear is interlocked with the tooth block of the outer ring of the gear ring, and the gear is rotatably arranged on the fixed ring.

[0014] Preferably, a motor II is fixedly connected to one side of the upper end surface of the fixed ring, and the output end of the motor II is fixedly connected to one end of the connecting rod I.

[0015] Preferably, a plurality of fastening nails are arranged at the lower end surface of the base.

[0016] The present application has the following advantages: 1. The water level alarm device for water conservancy construction utilizes a water flow driven alarm assembly, when the water level rises to the warning line, the edge of the mounting plate is flush with the impact ball, when the water flow impacts the float, the edge of the mounting plate will contact the impact ball, and when the two contact, a sound will be emitted, and when the mounting plate contacts the impact ball, the spring II will be compressed, and then the spring II will recover, causing the impact ball to rebound and impact the mounting plate again, causing the mounting plate to move again, and the mounting plate will contact other impact balls. Under the continuous impact of the water flow on the float and the rebound of the impact ball, a continuous sound is produced, reminding the construction party to take emergency measures in time, the entire sound emission process does not require electrical control, thereby avoiding the situation that when the pressure sensor and the alarm are powered off or malfunction, the alarm cannot be performed, and further improving the safety of the construction.

[0017] 2. The water level alarm device for water conservancy construction utilizes a locking assembly, which can keep the impact ball at a proper distance when the water level does not reach the warning line, regardless of how the mounting plate moves, the impact ball will not hinder the rising of the mounting plate, when the water level reaches the warning line, the reset ring is rotated to make the impact ball close to the mounting plate, the mounting plate can contact the impact ball and normally emit a sound. Thus, when the water level does not reach the warning line, the float is displaced horizontally under the impact of wind or water splashes, causing the impact ball to hinder the movement of the mounting plate when the float rises, resulting in the situation that the subsequent alarm work cannot be normally performed.

[0018] 3. The water level alarm device for water conservancy project construction disclosed herein utilizes an anti-interference component. When the outer shell descends, aquatic plants are prevented from directly contacting the float due to the traction plate and stretching cloth. Furthermore, due to the small opening at the bottom of the funnel-shaped structure, aquatic plants are also unable to enter the interior of the funnel-shaped structure through the opening until the float descends to a suitable height. This prevents the float from becoming entangled by aquatic plants during descent and while on the water surface, preventing the float from properly floating and moving, which in turn affects the intensity of subsequent impacts between the impact ball and the mounting plate, hindering the proper functioning of the alarm. Furthermore, when the float descends to a suitable height, the volume of the entire funnel-shaped structure increases, and the opening at its bottom also increases until it is the same size as the bottom opening of the outer shell. This increases the contact area between the bottom of the float and the water surface, making it more easily pushed by the water flow, increasing the distance between the mounting plate and the impact ball, and further improving the alarm effect. In addition, when the volume of the entire funnel-shaped structure becomes larger, the aquatic plants will be pushed to the periphery, avoiding the situation where the aquatic plants are entangled on the rope due to their close proximity, and ensuring the normal use of the rope. Compared with the method of setting the volume of the funnel-shaped structure larger, this adjustable method can reduce the space occupied by the device when the entire device is idle, making it easier to store.

[0019] 4. The water level alarm device for water conservancy project construction described in the present invention has a base that, when placed on the shore, the fastening nails can penetrate into the soil, so that the base is firmly connected to the ground, thereby ensuring the stability of the entire device during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below with reference to the accompanying drawings.

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of the shell; Figure 3 yes Figure 2 A partial enlarged view of the middle A; Figure 4 This is a schematic diagram of the three-dimensional structure of the shell from another perspective; Figure 5 It is a schematic diagram of the three-dimensional structure of the shell half section; Figure 6 This is a schematic diagram of the three-dimensional structure of the shell half section from another perspective; Figure 7 It is a schematic diagram of the three-dimensional structure of the sleeve; Figure 8 yes Figure 7 A partial enlarged view of point B in the middle; Figure 9 It is a schematic diagram of the half-section structure of the sleeve and the connecting rod.

[0022] In the figure: 1. Base; 2. Fastening nail; 3. Rotating roller; 4. Motor 1; 5. Rope; 6. Support roller; 7. Pillar; 8. Housing; 9. Alarm; 10. Stretch cloth; 11. Traction plate; 12. Fixing ring; 13. Ring gear; 14. Motor 2; 15. Gear; 16. Connecting rod 1; 17. Connecting rod 2; 18. Connecting rod 3; 19. Mounting plate; 20. Sliding rod 1; 21. Pressure sensor; 22. Pressure rod; 23. Rotating ring; 24. Sleeve 1; 25. Connecting rod; 26. Impact ball; 27. Sliding rod 2; 28. Sliding rod 3; 29. ​​Slider; 30. Lifting plate; 31. Connecting rod; 32. Sleeve 2; 33. Sliding rod 4; 34. Spring 1; 35. Spring 2; 36. Positioning column; 37. Socket; 38. Floating block. DETAILED DESCRIPTION

[0023] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] Please refer to Figures 1-9 The present invention provides a technical solution: a water level alarm device for water conservancy project construction, comprising a base 1, a pillar 7 is fixedly connected to one side of the upper end surface of the base 1, a rotating roller 3 is rotatably provided on one side of the upper end of the pillar 7, a rope 5 is wound around the rotating roller 3, a support roller 6 is provided on one side of the upper end of the pillar 7, the rope 5 is in contact with one side surface of the support roller 6, the end of the rope 5 is fixedly connected to a shell 8, an alarm 9 is provided on one side of the upper end of the shell 8, two slide bars 20 are slidably connected to one side of the inner cavity of the shell 8, the lower end of the slide bar 20 is fixedly connected to a lifting plate 30, and the lifting plate 30 is fixedly connected to the lower end of the slide bar 20. Two sliding rods 3 28 are fixedly connected at both ends of the plate 30, and the sliding rod 3 28 is slidably connected to the slider 29. Both sides of the lower end of the slider 29 are slidably connected to the sliding rod 27. The two ends of the sliding rod 27 are fixedly connected to the mounting plate 19, and the lower end surface of the mounting plate 19 is fixedly connected to the floating block 38. One side of the upper end surface of the lifting plate 30 is fixedly connected to the pressure rod 22. A pressure sensor 21 is provided on one side of the upper end of the inner cavity of the shell 8. The end of the pressure rod 22 is aligned with the pressure sensor 21. When the pressure sensor 21 detects pressure, the alarm 9 sounds. A water flow-driven alarm component is also provided on the shell 8. The water flow driven alarm assembly includes a sleeve 24 uniformly distributed radially around the shell 8 and slidably connected to the shell 8. The inner cavity of the sleeve 24 is slidably connected to a plug rod 25, and the end of the plug rod 25 is fixedly connected to an impact ball 26.

[0025] In this embodiment, Figure 1 、 Figure 6 、 Figure 9As shown, the upper end of the support 7 is fixedly connected with a motor 4, and the output end of the motor 4 is fixedly connected with the rotating roller 3.

[0026] The one end of the plug rod 25 is fixedly connected with a spring 35, and the other end of the spring 35 is fixedly connected with the inner cavity of the sleeve 24.

[0027] Specifically, in the prior art, the buoyancy plate is placed on the water surface, when the water level in the area rises, the buoyancy plate will move upwards, and as the buoyancy plate rises, the pressing block at the top of the buoyancy plate contacts the pressure sensor 21, and the pressure sensor 21 alarms after receiving the signal. Although this way can realize water level alarm, in some cases, when the pressure sensor 21 and the alarm are not powered or malfunction, the alarm cannot be performed, thereby causing the construction party to be difficult to take emergency measures in time, and construction risks are prone to occur.

[0028] Therefore, in order to solve the above problems, in use, the base 1 is placed on the shore, the shell 8 is above the water surface, then the rotating roller 3 is driven to rotate by the motor 4, the rope 5 is unwound, the shell 8 is lowered, until the bottom of the floating block 38 is at the height of the water level warning line, and at this time, the pressure rod 22 is separated from the pressure sensor 21, and the edge of the mounting plate 19 is lower than the impact ball 26.

[0029] When the water level rises, the floating block 38 rises due to the buoyancy, and the pressure rod 22 contacts the pressure sensor 21, and the alarm 9 sounds after the pressure sensor 21 receives the pressure signal, thereby reminding the construction party to take emergency measures in time. Moreover, when the pressure rod 22 contacts the pressure sensor 21, the impact ball 26 is flush with the edge of the mounting plate 19 at this time, and the floating block 38 is moved under the push of the water flow, since the second sliding rod 27 can slide on the sliding block 29, and the sliding block 29 can slide along the third sliding rod 28, no matter which direction the floating block 38 is impacted by the water flow, the floating block 38 will move, and when the floating block 38 moves, the edge of the mounting plate 19 will contact the impact ball 26, and when the two contact, a sound will be emitted, and when the mounting plate 19 contacts the impact ball 26, the spring 35 will be compressed, and then the spring 35 will recover, so that the impact ball 26 rebounds and hits the mounting plate 19 again, so that the mounting plate 19 moves again, and then the mounting plate 19 contacts other impact balls 26. That is, under the continuous impact of the water flow on the floating block 38 and the rebound of the impact ball 26, a continuous sound is produced, reminding the construction party to take emergency measures in time, and the whole sound emission process does not need to be controlled by electricity, thereby avoiding the situation that the pressure sensor 21 and the alarm 9 cannot alarm when they are not powered or malfunction, and further improving the safety of construction.

[0030] In the embodiment, as shown in Figure 5 , Figure 7 , Figure 8 shown, the shell 8 is further provided with a locking assembly; The locking assembly includes a rotating ring 23 rotatably arranged on one side of the outer wall of the shell 8, a socket 37 is provided on one side of the rotating ring 23, a connecting rod 31 is fixedly connected to one side of the lifting plate 30, a groove is provided on one side of the shell 8, the connecting rod 31 penetrates the groove of the shell 8, and the connecting rod 31 can move longitudinally in the groove, and a positioning column 36 is fixedly connected to one side of the lower end surface of the connecting rod 31, and the positioning column 36 can be inserted into the socket 37.

[0031] The rotating ring 23 is provided with a plurality of connecting rods 3 18 for one rotation, and one end of the connecting rod 3 18 is rotatably connected to one end of the sleeve 1 24 .

[0032] A sliding rod 4 33 is rotatably provided on one side of the rotating ring 23, and the sliding rod 4 33 is slidably connected to the sleeve 2 32. One end of the sleeve 2 32 is rotatably provided on the outer shell 8, and a spring 1 34 is sleeved on one side of the sliding rod 4 33. One end of the spring 1 34 is fixedly connected to one end of the sliding rod 4 33, and the other end is fixedly connected to the end of the sleeve 2 32.

[0033] Specifically, in the above embodiment, although the alarm can be activated by audibly striking the impact ball 26 against the mounting plate 19, in some cases, when the water level has not yet reached the warning line but the wind is strong or the water flow is turbulent, the float 38 is easily displaced laterally by the impact of the wind or water spray. As a result, when the float 38 rises, the impact ball 26 blocks the movement of the mounting plate 19, causing the subsequent alarm to fail to function properly. Furthermore, if the distance between the impact ball 26 and the mounting plate 19 is set too far, the impact ball 26 will not be able to contact the mounting plate 19, and the alarm will also fail to function properly.

[0034] Therefore, in order to avoid the above problems, when this embodiment is in use, the positioning column 36 in the initial state is plugged into the socket 37, the spring 1 34 is in a compressed state, and the impact ball 26 maintains a certain distance from the mounting plate 19. When the mounting plate 19 moves to the extreme position in any direction, the impact ball 26 will not contact the mounting plate 19, nor will it hinder the movement of the mounting plate 19.

[0035] When the water level rises, the float 38 and the lifting plate 30 move upward. When the mounting plate 19 is flush with the impact ball 26, the positioning post 36 disengages the socket 37, and the spring 1 34 returns to its original position. The rotating ring 23 rotates, and the connecting rod 3 18 drives the sleeve 1 24 to slide on the housing 8. Multiple sleeves 1 24 then slide simultaneously, and the impact ball 26 approaches the mounting plate 19. At this time, if the float 38 is moved by the impact of the water flow, the edge of the mounting plate 19 will contact the impact ball 26, and the sound can be emitted normally. This avoids the situation where the float 38 is laterally displaced by the impact of wind or water before the water level reaches the warning line, causing the impact ball 26 to block the movement of the mounting plate 19 when the float 38 rises, resulting in the subsequent alarm function not being able to function normally.

[0036] As shown in the embodiment, Figures 2-4 The anti-interference assembly is arranged on the outer shell 8. The anti-interference assembly comprises a fixed ring 12 fixedly connected to one side of the outer ring of the outer shell 8, a plurality of connecting rods I 16 rotatably arranged on the lower end surface of the fixed ring 12, a connecting rod II 17 rotatably arranged at one end of the connecting rod I 16, a traction plate 11 rotatably arranged at one end of the connecting rod II 17, and a stretch cloth 10 fixedly connected between adjacent two traction plates 11. The stretch cloth 10 is made of elastic material.

[0037] A gear ring 13 is rotatably arranged on one side of the upper end surface of the fixed ring 12. One end of the connecting rod I 16 is fixedly connected with a gear 15. The gear 15 is meshed with the tooth block of the outer ring of the gear ring 13. The gear 15 is rotatably arranged on the fixed ring 12.

[0038] A motor II 14 is fixedly connected to one side of the upper end surface of the fixed ring 12. The output end of the motor II 14 is fixedly connected with one end of the connecting rod I 16.

[0039] Specifically, in the above embodiment, when the floating block 38 is placed on the water surface, the water area where the floating block 38 is placed may have aquatic plants such as reeds and waterweeds. Therefore, the floating block 38 may be entangled by the aquatic plants during the descending process and when it is on the water surface, so that the floating block 38 is difficult to normally float up and move, thereby affecting the subsequent alarm work.

[0040] Therefore, in order to solve the above problems, in the embodiment, the plurality of traction plates 11 and the plurality of stretch cloths 10 are cooperated to form a funnel-shaped structure, and the outer shell 8 is wrapped.

[0041] When the outer shell 8 descends, the aquatic plants will not directly contact the floating block 38 due to the traction plates 11 and the stretch cloths 10. In addition, due to the small opening at the bottom of the funnel-shaped structure, the aquatic plants are also difficult to enter the inside of the funnel-shaped structure through the opening until the floating block 38 descends to the appropriate height. Therefore, the floating block 38 is difficult to normally float up and move due to being entangled by the aquatic plants during the descending process and when it is on the water surface, thereby affecting the subsequent impact degree of the impact ball 26 and the mounting plate 19, and causing the alarm work to be difficult to normally perform.

[0042] Furthermore, while the above-described method can prevent the float 38 from becoming entangled by aquatic plants, the bottom opening of the funnel-shaped structure is relatively small, so the contact area between the bottom of the float 38 and the water surface is also relatively small. Consequently, the water flow cannot easily propel the float 38, resulting in insufficient contact between the mounting plate 19 and the impact ball 26, which in turn affects the alarm function. Therefore, to address this issue, after the float 38 descends to a suitable height, the motor 2 14 drives the connecting rod 1 16 and gear 15 on one side to rotate, which in turn rotates the ring gear 13, which in turn rotates the remaining connecting rods 16 and gears 15. This, driven by the connecting rods 1 16 and 2 17, causes the multiple traction plates 11 to move radially. Simultaneously, the stretching cloth 10 is stretched, increasing the volume of the entire funnel-shaped structure, and the bottom opening thereof also increases until it is the same size as the bottom opening of the housing 8. This increases the contact area between the bottom of the float 38 and the water surface, making it more easily propulsed by the water flow, increasing the distance between the mounting plate 19 and the impact ball 26, and further enhancing the alarm function. In addition, when the volume of the entire funnel-shaped structure becomes larger, the aquatic plants will be pushed to the periphery, avoiding the situation where the aquatic plants are entangled on the rope 5 due to their proximity to the rope 5, and ensuring the normal use of the rope 5. Compared with the method of setting the volume of the funnel-shaped structure larger, this adjustable method can reduce the space occupied by the device when the entire device is idle, making it easier to store.

[0043] In this embodiment, Figure 1 As shown, a plurality of fastening nails 2 are provided on the lower end surface of the base 1 .

[0044] Specifically, when the base 1 is placed on the shore, the fastening nails 2 can penetrate into the soil, so that the base 1 is firmly connected to the ground, thereby ensuring the stability of the entire device during operation.

[0045] Working principle: The base 1 is placed on the shore, and the fastening nails 2 can be inserted into the soil to firmly connect the base 1 to the ground, thereby ensuring the stability of the entire device during operation. The housing 8 is placed above the water surface, and then the motor 14 is used to drive the rotating roller 3 to rotate, unwinding the rope 5, causing the housing 8 to descend until the bottom of the floating block 38 is at the height of the water level warning line. At this time, the pressure rod 22 and the pressure sensor 21 are separated, and the edge of the mounting plate 19 is lower than the impact ball 26. When the water level rises, the floating block 38 rises due to the buoyancy, and the pressure rod 22 contacts the pressure sensor 21. After the pressure sensor 21 receives the pressure signal, the alarm 9 sounds, thereby reminding the construction party to take emergency measures in time. In addition, when the pressure rod 22 contacts the pressure sensor 21, the impact ball 26 is flush with the edge of the mounting plate 19, and the float 38 is moved under the push of the water flow. Since the slide bar 27 can slide on the slider 29, and the slider 29 can slide along the slide bar 3 28, no matter which direction the float 38 is impacted by the water flow, the float 38 will move. When the float 38 moves, the edge of the mounting plate 19 will contact the impact ball 26, and a sound will be made when the two contact. In addition, when the mounting plate 19 contacts the impact ball 26, the spring 2 35 will be compressed, and then the spring 2 35 will recover, causing the impact ball 26 to rebound and hit the mounting plate 19 again, causing the mounting plate 19 to move again, and the mounting plate 19 will contact other impact balls 26 again. The continuous impact of the water flow on the float 38 and the rebound of the impact ball 26 produce a continuous sound, reminding the construction party to take emergency measures in a timely manner. The entire sound generation process does not require electronic control, thus avoiding the situation where the pressure sensor 21 and the alarm 9 are out of power or malfunction and cannot be used to alarm, further improving the safety of construction. In the initial state, the positioning column 36 is plugged into the socket 37, the spring 1 34 is in a compressed state, and the impact ball 26 maintains a certain distance from the mounting plate 19. When the mounting plate 19 moves to the extreme position in any direction, the impact ball 26 will not contact the mounting plate 19 and will not hinder the movement of the mounting plate 19. When the water level rises, the float 38 and the lifting plate 30 move upward. When the mounting plate 19 is flush with the impact ball 26, the positioning post 36 disengages the socket 37, and the spring 1 34 returns to its original position. The rotating ring 23 rotates, and the connecting rod 3 18 drives the sleeve 1 24 to slide on the housing 8. Multiple sleeves 1 24 then slide simultaneously, and the impact ball 26 approaches the mounting plate 19. At this point, if the float 38 is impacted by the water flow and moves, the edge of the mounting plate 19 will contact the impact ball 26, allowing the sound to be emitted normally. This prevents the float 38 from being displaced laterally by wind or water spray before the water level reaches the warning line. This would cause the impact ball 26 to block the movement of the mounting plate 19 when the float 38 rises, preventing the subsequent alarm from functioning properly. The multiple traction plates 11 and the multiple stretch fabrics 10 cooperate to form a funnel-shaped structure that wraps around the housing 8.When the housing 8 descends, aquatic plants are prevented from directly contacting the float 38 by the traction plate 11 and the stretch cloth 10. Furthermore, due to the small opening at the bottom of the funnel-shaped structure, aquatic plants are also unlikely to enter the interior of the funnel-shaped structure through the opening until the float 38 descends to a suitable height. This prevents the float 38 from becoming entangled by aquatic plants during its descent and while on the water surface, which could hinder its ability to float and move normally, thereby affecting the intensity of the subsequent impact between the impact ball 26 and the mounting plate 19 and preventing the alarm from functioning properly. Furthermore, while the above-described method can prevent the float 38 from becoming entangled by aquatic plants, due to the small opening at the bottom of the funnel-shaped structure, the contact area between the bottom of the float 38 and the water surface is also small, making it difficult for the water flow to propel the float 38 to move. This could result in insufficient contact between the mounting plate 19 and the impact ball 26, thus affecting the alarm function. Therefore, in order to solve this problem, when the float 38 drops to a suitable height, the motor 2 14 drives the connecting rod 16 and the gear 15 on one side to rotate, and the ring gear 13 rotates, and the remaining connecting rods 16 and gears 15 rotate, then the multiple traction plates 11 can be moved radially under the transmission of the connecting rod 16 and the connecting rod 2 17. At the same time, the stretch cloth 10 is stretched, so that the volume of the entire funnel-shaped structure becomes larger, and the opening at its bottom also becomes larger until it is the same size as the bottom opening of the outer shell 8, thereby expanding the contact area between the bottom of the float 38 and the water surface, and the float 38 is more easily pushed by the water flow, which intensifies the distance between the mounting plate 19 and the impact ball 26, and further improves the alarm effect. In addition, when the volume of the entire funnel-shaped structure becomes larger, the aquatic plants will be pushed to the periphery, avoiding the situation where the aquatic plants are entangled on the rope 5 due to their proximity to the rope 5, and ensuring the normal use of the rope 5. Compared with the method of setting the volume of the funnel-shaped structure larger, this adjustable method can reduce the space occupied by the device when the entire device is idle, making it easier to store.

[0046] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A water level alarm device for water conservancy project construction, comprising a base (1), characterized in that: One side of the upper end surface of the base (1) is fixedly connected to a pillar (7), one side of the upper end of the pillar (7) is rotatably provided with a rotating roller (3), a rope (5) is wound around the rotating roller (3), one side of the upper end of the pillar (7) is provided with a supporting roller (6), the rope (5) is in contact with the surface of one side of the supporting roller (6), the end of the rope (5) is fixedly connected to a shell (8), one side of the upper end of the shell (8) is provided with an alarm (9), one side of the inner cavity of the shell (8) is slidably connected to two sliding rods (20), the lower end of the sliding rod (20) is fixedly connected to a lifting plate (30), and the two ends of the lifting plate (30) are fixedly connected to two sliding rods (3). (28), the slide bar 3 (28) is slidably connected to the slide bar (29), and both sides of the lower end of the slide bar (29) are slidably connected to the slide bar 2 (27), and both ends of the slide bar 2 (27) are fixedly connected to the mounting plate (19), and the lower end surface of the mounting plate (19) is fixedly connected to the floating block (38), and one side of the upper end surface of the lifting plate (30) is fixedly connected to the pressure rod (22), and a pressure sensor (21) is provided on one side of the upper end of the inner cavity of the shell (8), and the end of the pressure rod (22) is aligned with the pressure sensor (21). When the pressure sensor (21) detects pressure, the alarm (9) sounds, and the shell (8) is also provided with a water flow driven alarm component; The water flow driven alarm assembly comprises a sleeve (24) uniformly distributed radially around the outer shell (8) and slidably connected to the outer shell (8); a plug rod (25) is slidably connected to the inner cavity of the sleeve (24); and an impact ball (26) is fixedly connected to the end of the plug rod (25).

2. A water level alarm device for water conservancy project construction according to claim 1, characterized in that: One side of the upper end of the support (7) is fixedly connected to a motor 1 (4), and the output end of the motor 1 (4) is fixedly connected to the rotating roller (3).

3. The water level alarm device for water conservancy project construction according to claim 1, characterized in that: One end of the plug rod (25) is fixedly connected to a spring 2 (35), and the other end of the spring 2 (35) is fixedly connected to one end of the inner cavity of the sleeve 1 (24).

4. A water level alarm device for water conservancy project construction according to claim 1, characterized in that: The housing (8) is also provided with a locking assembly; The locking assembly includes a rotating ring (23) rotatably arranged on one side of the outer wall of the housing (8), a socket (37) is provided on one side of the rotating ring (23), a connecting rod (31) is fixedly connected to one side of the lifting plate (30), a groove is provided on one side of the housing (8), the connecting rod (31) penetrates the groove of the housing (8), and the connecting rod (31) can move longitudinally in the groove, and a positioning column (36) is fixedly connected to one side of the lower end surface of the connecting rod (31), and the positioning column (36) can be inserted into the socket (37).

5. A water level alarm device for water conservancy project construction according to claim 4, characterized in that: The rotating ring (23) is provided with a plurality of connecting rods (18) for one rotation, and one end of the connecting rod (18) is rotatably connected to one end of the sleeve (24).

6. A water level alarm device for water conservancy project construction according to claim 5, characterized in that: A sliding rod four (33) is rotatably provided on one side of the rotating ring (23), and the sliding rod four (33) is slidably connected to a sleeve two (32). One end of the sleeve two (32) is rotatably provided on the housing (8), and a spring one (34) is sleeved on one side of the sliding rod four (33). One end of the spring one (34) is fixedly connected to one end of the sliding rod four (33), and the other end is fixedly connected to the end of the sleeve two (32).

7. The water level alarm device for water conservancy project construction according to claim 1, characterized in that: The housing (8) is also provided with an anti-interference component; The anti-interference component includes a fixed ring (12) fixedly connected to one side of the outer ring of the housing (8), a plurality of connecting rods (16) are rotatably provided on the lower end surface of the fixed ring (12), a connecting rod (17) is rotatably provided at one end of the connecting rod (16), a traction plate (11) is rotatably provided at one end of the connecting rod (17), and a stretching cloth (10) is fixedly connected between two adjacent traction plates (11), and the stretching cloth (10) is made of elastic material.

8. A water level alarm device for water conservancy project construction according to claim 7, characterized in that: A gear ring (13) is rotatably provided on one side of the upper end surface of the fixing ring (12), and a gear (15) is fixedly connected to one end of the connecting rod (16). The gear (15) and the outer ring gear block of the gear ring (13) are meshed with each other, and the gear (15) is rotatably provided on the fixing ring (12).

9. A water level alarm device for water conservancy project construction according to claim 8, characterized in that: One side of the upper end surface of the fixing ring (12) is fixedly connected to the second motor (14), and the output end of the second motor (14) is fixedly connected to one end of the first connecting rod (16).

10. The water level alarm device for water conservancy project construction according to claim 1, characterized in that: The lower end surface of the base (1) is provided with a plurality of fastening nails (2).

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