A cofferdam for hydraulic structure construction and a construction process thereof

Abstract

The application belongs to the field of building construction, and particularly relates to a cofferdam for hydraulic building construction and a construction process thereof, which comprises a baffle plate, the inside of the baffle plate is a hollow structure, a fixing seat is rotationally connected to the right side of the baffle plate, a water inlet is formed in the left side of the baffle plate, a water level observation mechanism is arranged in the inside of the baffle plate, a drainage pipeline is fixedly connected to the right side of the baffle plate, a one-way valve is fixedly connected to the inside of the drainage pipeline, a transmission mechanism is arranged in the inside of the baffle plate, and an auxiliary mechanism is fixed below the transmission mechanism. The baffle plates are mutually spliced to form a construction site, the fixing seat is used to support and fix to avoid collapse, the water level observation mechanism can observe the water flow height and drainage condition in the inside, the drainage pipeline is used for pumping and emptying, the transmission mechanism is used to realize the pressure change in the baffle plate, thereby accelerating the output of water flow, and the requirement of rapid drainage is realized.

Description

Technical Field

[0001] This invention relates to a cofferdam for construction, and more specifically to a cofferdam for hydraulic engineering construction and its construction process. Background Technology

[0002] A cofferdam is a temporary retaining structure built in water conservancy projects to construct permanent water conservancy facilities. Its function is to prevent water and soil from entering the construction site of the building, so as to facilitate drainage, excavation of foundation pits, and construction of buildings within the cofferdam.

[0003] Most existing cofferdams only serve as barriers. When constructing a traditional cofferdam, it is made up of multiple panels that are built to a height higher than the predicted height so that water can be pumped out. Because the cofferdam has good sealing and waterproofing properties, it will isolate the water within the barrier area. Subsequently, construction workers need to use external machinery to drain the water, which requires a lot of financial and human resources. Moreover, the drainage process and warning signs are not visible from the outside. Summary of the Invention

[0004] The main technical problem solved by this invention is to provide a cofferdam for hydraulic engineering construction and its construction process, which can solve the problem of automatic drainage after the cofferdam is built, and can adjust the extension length of the drainage pipe according to different water levels to serve as a warning and observation function.

[0005] To solve the above-mentioned technical problems, according to one aspect of the present invention, more specifically, a cofferdam for hydraulic engineering construction includes a baffle plate, the interior of which is a hollow structure. A fixed seat is rotatably connected to the right side of the baffle plate, and a water inlet is provided on the left side of the baffle plate. A water level observation mechanism is provided inside the baffle plate, a drainage pipe is fixedly connected to the right side of the baffle plate, a one-way valve is fixedly connected inside the drainage pipe, a transmission mechanism is provided inside the baffle plate, and an auxiliary mechanism is fixed below the transmission mechanism.

[0006] Furthermore, the water level observation mechanism includes an L-shaped plate, a limiting block, and a drain pipe. The L-shaped plate is fixedly connected inside the baffle. A through-type pressure-reducing groove is formed on the surface of the L-shaped plate. Two connecting members are fixedly connected to the left side of the L-shaped plate. A threaded sleeve is rotatably connected between the connecting members. The threaded sleeve passes through the connecting members. Threaded rods are threaded to both ends of the threaded sleeve. An adapter block is threaded to the outer wall of the threaded rod. A limiting groove is formed on the outer wall of the adapter block. A convex block is slidably connected inside the limiting groove. A pressure-reducing block is fixedly connected to the right side of the convex block. The pressure-reducing block passes through the pressure-reducing groove and is slidably connected thereto. The limiting block is fixedly connected to the right end of the pressure-reducing block. The drain pipe is fixedly connected to the opposite side of the limiting block. Insertion holes are formed at both ends of the baffle, and the drain pipe passes through the insertion holes.

[0007] Furthermore, a concave component is fixedly connected to the inner left side of the baffle, a limiting gear is rotatably connected inside the concave component, a spiral float is rotatably connected inside the baffle, a driving gear is fixedly connected to the outer wall of the spiral float, the driving gear meshes with the limiting gear and the threaded sleeve respectively, a float block is slidably connected to the outer wall of the spiral float, and a vertical rod is fixedly connected inside the baffle, the vertical rod passing through the float block.

[0008] Furthermore, the transmission mechanism includes a cam, a shaft, and a rotating wheel. The shaft is fixedly connected to the inner right side of the baffle and the right side of the L-shaped plate. The cam and the rotating wheel are fixedly connected to the outer wall of the shaft. Racks are fixedly connected to opposite sides of the connecting plate. The racks mesh with the rotating wheel. A cam groove is formed on the outer wall of the cam. A sleeve is fixedly connected to the inner right side of the baffle and the right side of the L-shaped plate. A compression rod is rotatably connected to the outer wall of the sleeve. The other end of the compression rod is located inside the cam groove and is slidably connected.

[0009] Furthermore, the auxiliary mechanism includes a sealing plate, a piston, and a connecting rod. The bottom end of the compression rod is rotatably connected to the connecting rod, which passes through the L-shaped plate and the sealing plate. The bottom end of the connecting rod is fixedly connected to the piston. A water inlet is provided on the left side of the sealing plate, and a sealing door is fixedly connected to the left side of the piston. The sealing door is adapted to the water inlet.

[0010] Furthermore, a reset groove is provided on the upper surface of the fixed base, a reset block is slidably connected inside the reset groove, a reset spring is fixedly connected inside the reset groove, the reset spring is fixedly connected to the reset block, and a reset rod is rotatably connected to the upper surface of the reset block, and the reset rod is rotatably connected to the right side of the baffle.

[0011] Furthermore, the upper surface of the fixing base is threaded with bolts.

[0012] Furthermore, a torsion spring is fixedly connected to the outer wall of the spiral float.

[0013] Furthermore, the front and rear sides of the baffle are rotatably connected to a combination plate, the combination plate including a base plate, a ground axis, and concave and convex parts. The base plate is fixedly connected to the front and rear surfaces of the baffle, and the concave and convex parts are rotatably connected to the base plate through the ground axis. A water pump is fixedly connected to the rear end of the drainage pipe.

[0014] According to another aspect of the present invention, a construction process for a cofferdam used in hydraulic engineering construction is provided, comprising the following steps:

[0015] S1. Install the baffle at the designated position through the fixing seat, and then splice multiple baffles in sequence to form a square, and perform waterproofing work.

[0016] S2. Water flows in from the inlet and is discharged from the drain pipe;

[0017] S3. During water discharge, the incoming water lifts the float block, causing the spiral float to rotate, which in turn causes the drive gear to drive the threaded sleeve to rotate, further extending the discharge pipe. The higher the water level, the farther the extension distance.

[0018] S4. When the drain pipe extends, the rack moves, which in turn rotates the cam, which in turn adjusts the angle of the compression rod, thereby controlling the height adjustment of the sealing door, performing negative pressure water suction, and accelerating the discharge of water.

[0019] The beneficial effects of the cofferdam for hydraulic engineering construction and its construction process of the present invention are as follows:

[0020] The construction site is formed by splicing together set baffles, which are supported and fixed by fixed seats to prevent collapse. The water level observation mechanism can observe the water flow height and drainage situation inside. The drainage pipes are used to pump out water and empty it. The transmission mechanism is used to realize the pressure change inside the baffles, thereby accelerating the output of water and realizing the need for rapid drainage.

[0021] The water level is determined by the distance the drain pipe extends out of the insertion hole through the water level observation mechanism. As the water level drops, the distance the drain pipe extends out decreases, thus allowing for observation of the drainage situation.

[0022] Through the transmission mechanism, the threaded sleeve rotates, causing the threaded rod to move forward due to the restriction of the adapter block, and also causing the limit block to move, which in turn allows the rack to move and mesh with the rotating wheel, thereby allowing the compression rod to slide with the cam groove, thus creating an angle change for adjustment;

[0023] The auxiliary mechanism is designed to drive the piston to draw air through the linkage rod, thereby creating a negative pressure effect and accelerating drainage. Attached Figure Description

[0024] The present invention will now be described in further detail with reference to the accompanying drawings and specific implementation methods.

[0025] Figure 1 This is a schematic diagram of the overall structure of a cofferdam for hydraulic engineering construction according to the present invention;

[0026] Figure 2 This is a schematic diagram of the internal structure of a cofferdam for hydraulic engineering construction according to the present invention;

[0027] Figure 3This invention relates to a cofferdam for hydraulic engineering construction. Figure 2 A magnified structural diagram at point A;

[0028] Figure 4 This is a top view of the internal structure of the baffle plate in a cofferdam for hydraulic engineering construction according to the present invention.

[0029] Figure 5 This is a side view of the internal structure of the baffle plate in a cofferdam for hydraulic engineering construction according to the present invention.

[0030] In the diagram: 1. Baffle; 2. Fixed base; 3. Inlet; 4. Water level observation mechanism; 5. Drainage pipe; 6. Check valve; 7. Transmission mechanism; 8. Auxiliary mechanism; 9. L-shaped plate; 10. Limiting block; 11. Pipeline; 12. Connecting piece; 13. Threaded sleeve; 14. Threaded rod; 15. Adapter block; 16. Limiting groove; 17. Convex block; 18. Pressure reducing block; 19. Insertion hole; 20. Concave part; 21. Limiting gear; 22. Helical float; 23. Drive gear; 24. Float 25. Float block; 26. Cam; 27. Shaft; 28. Rotary wheel; 29. ​​Rack; 30. Cam groove; 31. Sleeve rod; 32. Compression rod; 33. Sealing plate; 34. Piston; 35. Linking rod; 36. Sealing door; 37. Reset groove; 38. Reset block; 39. Reset spring; 40. Reset rod; 41. Bolt; 42. Torsion spring; 43. Vertical rod; 44. Pressure relief groove; 45. Inlet; 46. Combination plate; 47. Base plate; 48. Ground shaft; 49. Concave and convex parts; 40. Water pump. Detailed Implementation

[0031] The present invention will be described in detail below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in the present application can be combined with each other.

[0032] According to one aspect of the invention, such as Figure 1 As shown in Figure 5, a cofferdam for hydraulic engineering construction is provided, including a baffle 1. The interior of the baffle 1 is a hollow structure. A fixed seat 2 is rotatably connected to the right side of the baffle 1. A water inlet 3 is provided on the left side of the baffle 1. A water level observation mechanism 4 is provided inside the baffle 1. A drainage pipe 5 is fixedly connected to the right side of the baffle 1. A one-way valve 6 is fixedly connected inside the drainage pipe 5. A transmission mechanism 7 is provided inside the baffle 1. An auxiliary mechanism 8 is fixed below the transmission mechanism 7. The position of the baffle 1 is fixed by the fixed seat 2. Water enters through the water inlet 3 and then exits through the drainage pipe 5. Since the one-way valve 6 is fixed inside the drainage pipe 5, the direction of water flow is ensured. Negative pressure is applied inside the baffle 1 by the transmission mechanism 7 and the auxiliary mechanism 8, thereby accelerating the discharge of water.

[0033] In this embodiment, the water level observation mechanism 4 includes an L-shaped plate 9, a limiting block 10, and a drain pipe 11. The L-shaped plate 9 is fixedly connected inside the baffle 1. A through-type pressure relief groove 43 is opened on the surface of the L-shaped plate 9. Two connecting pieces 12 are fixedly connected to the left side of the L-shaped plate 9. A threaded sleeve 13 is rotatably connected between the connecting pieces 12. The threaded sleeve 13 passes through the connecting pieces 12. Threaded rods 14 are threaded to both ends of the threaded sleeve 13. An adapter block 15 is threaded to the outer wall of the threaded rod 14. An opening is opened on the outer wall of the adapter block 15. There is a limiting groove 16, and a convex block 17 is slidably connected inside the limiting groove 16. A pressure reducing block 18 is fixedly connected to the right side of the convex block 17. The pressure reducing block 18 passes through the pressure reducing groove 43 and is slidably connected to it. A limiting block 10 is fixedly connected to the right end of the pressure reducing block 18. A pipe 11 is fixedly connected to the opposite side of the limiting block 10. Insertion holes 19 are opened at both ends of the baffle 1. The pipe 11 passes through the insertion holes 19. The threaded sleeve 13 rotates to move the threaded rod 14 forward, thereby moving the adapter block 15, and further realizing the extension of the pipe 11.

[0034] In this embodiment, a concave part 20 is fixedly connected to the inner left side of the baffle 1. A limiting gear 21 is rotatably connected inside the concave part 20. A spiral float 22 is rotatably connected inside the baffle 1. A driving gear 23 is fixedly connected to the outer wall of the spiral float 22. The driving gear 23 is meshed with the limiting gear 21 and the threaded sleeve 13 respectively. A float block 24 is slidably connected to the outer wall of the spiral float 22. A vertical rod 42 is fixedly connected inside the baffle 1. The vertical rod 42 passes through the float block 24. The upward movement of the float block 24 drives the spiral float 22 to rotate, which in turn drives the driving gear 23 to rotate, thereby causing the threaded sleeve 13 to rotate.

[0035] In this embodiment, the transmission mechanism 7 includes a cam 25, a shaft 26, and a rotating wheel 27. The shaft 26 is fixedly connected to the inner right side of the baffle 1 and the right side of the L-shaped plate 9. The cam 25 and the rotating wheel 27 are fixedly connected to the outer wall of the shaft 26. The rack 28 is fixedly connected to the opposite side of the limiting block 10. The rack 28 is meshed with the rotating wheel 27. The outer wall of the cam 25 has a cam groove 29. The sleeve 30 is fixedly connected to the inner right side of the baffle 1 and the right side of the L-shaped plate 9. The outer wall of the sleeve 30 is rotatably connected to a compression rod 31. The other end of the compression rod 31 is located inside the cam groove 29 and is slidably connected. The rack 28 causes the rotating wheel 27 to rotate, which in turn causes the cam 25 to rotate. Due to the shape of the cam 25, the angle of the compression rod 31 changes.

[0036] In this embodiment, the auxiliary mechanism 8 includes a sealing plate 32, a piston 33, and a connecting rod 34. The bottom end of the compression rod 31 is rotatably connected to the connecting rod 34, which passes through the L-shaped plate 9 and the sealing plate 32. The bottom end of the connecting rod 34 is fixedly connected to the piston 33. A water intake port 44 is provided on the left side of the sealing plate 32. A sealing door 35 is fixedly connected to the left side of the piston 33. The sealing door 35 is adapted to the water intake port 44. The angle change of the compression rod 31 causes the height adjustment of the connecting rod 34, thereby causing the piston 33 to rise and drive the sealing door 35 to open, forming a negative pressure to accelerate water absorption.

[0037] In this embodiment, a reset groove 36 is provided on the upper surface of the fixed base 2. A reset block 37 is slidably connected inside the reset groove 36. A reset spring 38 is fixedly connected inside the reset groove 36. The reset spring 38 is fixedly connected to the reset block 37. A reset rod 39 is rotatably connected to the upper surface of the reset block 37. The reset rod 39 is rotatably connected to the right side of the baffle 1. The reset groove 36 is used to slide the position of the reset block 37, thereby supporting the baffle 1.

[0038] In this embodiment, the upper surface of the fixing base 2 is threaded with bolts 40 to form a fixation.

[0039] In this embodiment, a torsion spring 41 is fixedly connected to the outer wall of the spiral float 22, and is reset later.

[0040] In this embodiment, a combination plate 45 is rotatably connected to both the front and rear sides of the baffle 1. The combination plate 45 includes a base plate 46, a ground shaft 47, and a concave-convex part 48. The base plate 46 is fixedly connected to the front and rear surfaces of the baffle 1. The concave-convex part 48 is rotatably connected to the base plate 46 through the ground shaft 47. A water pump 49 is fixedly connected to the rear end of the drainage pipe 5. Multiple sets of baffles 1 are spliced ​​by interlocking two adjacent concave-convex parts 48. The angle of the concave-convex part 48 can be adjusted by rotating the ground shaft 47, thereby completing the interlocking at the corner.

[0041] According to another aspect of the present invention, a construction process for a cofferdam used in hydraulic engineering construction is provided, comprising the following steps:

[0042] S1. Install the baffle 1 in the designated position through the fixing seat 2, and splice multiple baffles 1 in sequence to form a square, and do a good job of waterproofing.

[0043] S2. Water flows in from inlet 3 and is discharged from drain pipe 5;

[0044] S3. During water discharge, the incoming water lifts the float block 24, which in turn causes the spiral float 22 to rotate, which in turn causes the drive gear 23 to drive the threaded sleeve 13 to rotate, further extending the discharge pipe 11. The higher the water level, the farther the extension distance.

[0045] S4. When the drain pipe 11 extends, the rack 28 moves, which in turn causes the cam 25 to rotate, thereby adjusting the angle of the compression rod 31 and controlling the height adjustment of the sealing door 35 to perform negative pressure water suction and accelerate the discharge of water.

[0046] The working principle of this device is as follows: multiple baffles 1 are spliced ​​together and fixed with bolts 40. The baffles 1 are supported by a return spring 38 and a return rod 39. Water flows in from the inlet 3 and accumulates. Due to the buoyancy of the float block 24, the water rises in the accumulation, driving the spiral float 22 to rotate, which in turn drives the drive gear 23 to rotate, which in turn drives the threaded sleeve 13 to rotate. The rotation of the threaded sleeve 13 causes the threaded rod 14 to move forward, which in turn moves the adapter block 15, further enabling the drain pipe 11 to extend, making it easier to observe the water flow height and drainage situation. When the drain pipe 11 extends, the limit block 10 drives the rack 28 to move, which in turn drives the cam 25 to rotate. Due to the shape of the cam 25, the angle of the compression rod 31 changes, which adjusts the height of the linkage rod 34, which in turn causes the piston 33 to rise, driving the sealing door 35 to open, forming a negative pressure to accelerate water absorption.

[0047] All electrical components mentioned in this article are real-world electrical components.

[0048] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present invention are also within the protection scope of the present invention.

Claims

1. A cofferdam for hydraulic engineering construction, comprising a baffle (1), characterized in that: The baffle (1) has a hollow interior. A fixed seat (2) is rotatably connected to the right side of the baffle (1). A water inlet (3) is opened on the left side of the baffle (1). A water level observation mechanism (4) is provided inside the baffle (1). A drain pipe (5) is fixedly connected to the right side of the baffle (1). A one-way valve (6) is fixedly connected inside the drain pipe (5). A transmission mechanism (7) is provided inside the baffle (1). An auxiliary mechanism (8) is fixed below the transmission mechanism (7). The water level observation mechanism (4) includes an L-shaped plate (9), a limiting block (10), and a drain pipe (11). The L-shaped plate (9) is fixedly connected inside the baffle (1). A through-type pressure relief groove (43) is opened on the surface of the L-shaped plate (9). Two connectors (12) are fixedly connected to the left side of the L-shaped plate (9). A threaded sleeve (13) is rotatably connected between the connectors (12). The threaded sleeve (13) passes through the connectors (12). Threaded rods (14) are threaded to both ends of the threaded sleeve (13). A transition is threaded to the outer wall of the threaded rod (14). Block (15), the outer side wall of the adapter block (15) is provided with a limiting groove (16), the inside of the limiting groove (16) is slidably connected to a convex block (17), the right side of the convex block (17) is fixedly connected to a pressure reducing block (18), the pressure reducing block (18) passes through the pressure reducing groove (43) and is slidably connected to it, the right end of the pressure reducing block (18) is fixedly connected to the limiting block (10), the opposite side of the limiting block (10) is fixedly connected to the pipe (11), the front and rear ends of the baffle (1) are provided with insertion holes (19), the pipe (11) passes through the insertion holes (19). A concave part (20) is fixedly connected to the inside left side of the baffle (1). A limiting gear (21) is rotatably connected inside the concave part (20). A spiral float (22) is rotatably connected inside the baffle (1). A drive gear (23) is fixedly connected to the outer wall of the spiral float (22). The drive gear (23) meshes with the limiting gear (21) and the threaded sleeve (13) respectively. A float block (24) is slidably connected to the outer wall of the spiral float (22). A vertical rod (42) is fixedly connected inside the baffle (1). The vertical rod (42) passes through the float block (24).

2. A cofferdam for hydraulic engineering construction according to claim 1, characterized in that: The transmission mechanism (7) includes a cam (25), a shaft (26), and a rotating wheel (27). The shaft (26) is fixedly connected to the right side of the baffle (1) and the right side of the L-shaped plate (9). The cam (25) and the rotating wheel (27) are fixedly connected to the outer wall of the shaft (26). The rack (28) is fixedly connected to the opposite side of the limiting block (10). The rack (28) meshes with the rotating wheel (27). A cam groove (29) is provided on the outer wall of the cam (25). A sleeve rod (30) is fixedly connected to the right side of the baffle (1) and the right side of the L-shaped plate (9). A compression rod (31) is rotatably connected to the outer wall of the sleeve rod (30). The other end of the compression rod (31) is located inside the cam groove (29) and is slidably connected.

3. A cofferdam for hydraulic engineering construction according to claim 2, characterized in that: The auxiliary mechanism (8) includes a sealing plate (32), a piston (33), and a connecting rod (34). The bottom end of the compression rod (31) is rotatably connected to the connecting rod (34). The connecting rod (34) passes through the L-shaped plate (9) and the sealing plate (32). The bottom end of the connecting rod (34) is fixedly connected to the piston (33). A water inlet (44) is provided on the left side of the sealing plate (32). A sealing door (35) is fixedly connected to the left side of the piston (33). The sealing door (35) is adapted to the water inlet (44).

4. A cofferdam for hydraulic engineering construction according to claim 3, characterized in that: The upper surface of the fixed base (2) is provided with a reset groove (36), and a reset block (37) is slidably connected inside the reset groove (36). A reset spring (38) is fixedly connected inside the reset groove (36). The reset spring (38) is fixedly connected to the reset block (37). A reset rod (39) is rotatably connected to the upper surface of the reset block (37). The reset rod (39) is rotatably connected to the right side of the baffle (1).

5. A cofferdam for hydraulic engineering construction according to claim 4, characterized in that: The upper surface of the fixed base (2) is threaded with bolts (40).

6. A cofferdam for hydraulic engineering construction according to claim 5, characterized in that: A torsion spring (41) is fixedly connected to the outer wall of the spiral float (22).

7. A cofferdam for hydraulic engineering construction according to claim 6, characterized in that: The front and rear sides of the baffle (1) are rotatably connected to a combination plate (45). The combination plate (45) includes a base plate (46), a ground shaft (47), and a concave-convex part (48). The base plate (46) is fixedly connected to the front and rear surfaces of the baffle (1). The concave-convex part (48) is rotatably connected to the base plate (46) through the ground shaft (47). A water pump (49) is fixedly connected to the rear end of the drainage pipe (5).

8. A construction process for a cofferdam used in hydraulic engineering construction, comprising the cofferdam described in claim 7, characterized in that, Includes the following steps: S1. Install the baffle (1) in the designated position through the fixing seat (2), and splice multiple baffles (1) in sequence to form a square, and do a good job of waterproofing. S2. Water flows in from the inlet (3) and is discharged from the drain pipe (5); S3. During the water discharge, the incoming water lifts the float block (24), which in turn causes the spiral float (22) to rotate, and the drive gear (23) drives the threaded sleeve (13) to rotate, thus extending the discharge pipe (11). The higher the water level, the farther the extension distance. S4. When the drain pipe (11) extends, the rack (28) moves, which in turn causes the cam (25) to rotate, which in turn causes the angle of the compression rod (31) to be adjusted, which in turn controls the height adjustment of the sealing door (35) to perform negative pressure water suction and accelerate the discharge of water.

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