Water conservancy construction cofferdam device

Abstract

The utility model relates to cofferdam device technical field, especially water conservancy construction cofferdam device, including bottom board, the bottom board is hollow annular structure, the top of bottom board is fixed with peripheral fender and inner fender respectively by welding, the peripheral fender is surrounded in the outside of inner fender, fill several inner lining rods between the peripheral fender and inner fender, the surface of inner lining rod is fixed with the inner wall surface of peripheral fender and the surface of inner fender respectively by welding, the inner lining rod is arranged along the equidistance distribution of inner ring wall annular of peripheral fender, still inlaying the reinforcing ring that has been penetrated between several inner lining rods. The scheme will fill the inner lining rod and be fixed with the peripheral fender and inner fender by welding, form the compact combination type structure, this design not only effectively disperses the impact force of water flow, still can fill the sandstone particle through the gap between the inner and outer fender, greatly increase overall weight and compactness, the filling of sandstone not only strengthens the deformation resistance of cofferdam, makes its installation on riverbed more stable.

Description

Technical Field

[0001] This utility model relates to the field of cofferdam device technology, and in particular to a cofferdam device for water conservancy construction. Background Technology

[0002] A cofferdam is an important facility used in hydraulic engineering to temporarily block water flow and create a dry working environment. It is commonly used in construction projects in water bodies such as rivers, lakes, and reservoirs.

[0003] The main function of a cofferdam is to block water flow and lower the water level, allowing construction workers to operate in a dry or relatively dry environment, thereby improving construction efficiency and safety. Sensors and control systems are used to monitor combustion parameters in real time and automatically adjust variable blade angles to achieve adaptive control. According to the authorized publication number "CN221589667U", a hydraulic construction cofferdam device is disclosed, including a cofferdam body composed of multiple enclosure plates. The inner circumference of the cofferdam body is provided with support mechanisms fixedly installed on the corresponding enclosure plates. The support mechanism includes a base arranged along the extension direction of the enclosure plates, and diagonal bracing components for supporting the enclosure plates are provided on the base. The diagonal bracing components are rotatably retractable onto the base, and locking components are provided on the base corresponding to the diagonal bracing components for fixing them to the base. Through the arrangement of the base and diagonal bracing components, the base is fixed to the enclosure plates, and the diagonal bracing components support it, thereby improving the enclosure plates' resistance to wind and wave impacts and effectively reducing the possibility of the enclosure plates collapsing due to wind and wave impacts.

[0004] Currently, most small cofferdam structures are composed of multiple pillars and a single layer of retaining panels. When the construction period is long, water seepage is likely to occur. At the same time, most retaining panels are only embedded in the riverbed at the bottom, creating an isolation space between the retaining panel and the riverbed. However, if the riverbed is soft, it is difficult to guarantee the long-term stability of the cofferdam by simply inserting the bottom of the retaining panel into the riverbed. Therefore, further reinforcement is needed to ensure the safety and stability of the cofferdam during construction. Utility Model Content

[0005] The purpose of this utility model is to address the aforementioned shortcomings in the existing technology by proposing a cofferdam device for water conservancy construction.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a cofferdam device for water conservancy construction, comprising a bottom plate, the bottom plate being a hollow annular structure, an outer perimeter and an inner perimeter welded and fixed above the bottom plate, the outer perimeter surrounding the outer perimeter, a plurality of inner lining rods filling the space between the outer perimeter and the inner perimeter, the surfaces of the inner lining rods being welded and fixed to the inner wall of the outer perimeter and the surface of the inner perimeter, the inner lining rods being equidistantly distributed in an annular pattern along the inner ring wall of the outer perimeter, and reinforcing rings being embedded and penetrating between the plurality of inner lining rods;

[0007] The bottom plate is provided with a push frame at its lower end. The outer wall of the push frame is a conical structure, and the lower end of the push frame is a pointed structure.

[0008] The outer perimeter is covered with a convex edge plate, and a number of pins are welded to the lower end of the convex edge plate. The lower end of each pin has a pointed protrusion, and a number of barbs are welded to the surface of each pin.

[0009] Preferably, the outer and inner barriers are of the same height, both are cylindrical structures, and are made of stainless steel.

[0010] Preferably, the inner wall of the inner enclosure is fixedly installed with a plurality of internal support components, each internal support component including a rod seat and a support rod, with rod seats respectively sleeved at both ends of the support rod, and the rod seats are fixed to the inner wall of the inner enclosure by screws.

[0011] Preferably, the upper ends of the outer perimeter and the inner perimeter are both covered with connecting seats. The connecting seats are U-shaped structures, and the two ends of the connecting seats are fixedly installed to the outer perimeter and the inner perimeter by fastening screws, respectively.

[0012] Preferably, a positioning seat is fixed at the upper end of the connecting seat, and a positioning rod is slidably inserted inside the positioning seat.

[0013] Preferably, the upper ends of several positioning rods are all fitted with the same foot pedal, which is a circular ring structure.

[0014] Preferably, a plurality of positioning cylinders are fixedly distributed on the upper end of the convex edge plate, and a second positioning rod is inserted and fixed inside the positioning cylinder. The upper end of the second positioning rod is fixed to the lower end of the foot pedal by screws, and the second positioning rod is staggered with the connecting seat.

[0015] The design scheme proposed in this utility model has the following beneficial effects in application:

[0016] 1. This scheme welds and fixes the outer and inner retaining walls together and fills them with inner lining rods to form a tight combined structure. This design not only effectively disperses the impact force of the water flow, but also fills the gap between the inner and outer retaining walls with sand and gravel particles, which greatly increases the overall weight and density. The filling of sand and gravel not only enhances the deformation resistance of the cofferdam, but also makes its installation on the riverbed more stable.

[0017] 2. As described in 1, the cofferdam device has a conical propulsion frame at the lower end of the bottom plate. Its pointed structure can be efficiently embedded into the riverbed to form a preliminary fixation. At the same time, the plugs welded to the outer retaining surface can penetrate into the riverbed strata and achieve multi-point anchoring through the pointed protrusion and barb design. The barb structure can effectively resist water flow scouring or external force pulling after the plugs are inserted, preventing the cofferdam from shifting or tilting.

[0018] 3. As described in 2, the support rod assembly installed inside the inner enclosure strengthens the radial compressive strength of the cofferdam through horizontal and vertical distribution, and also forms a ladder structure. Workers can climb up and down with the help of the support rods, which facilitates the entry and exit of the cofferdam or the transportation of vehicles and materials, thus solving the cumbersome problem of traditional cofferdams requiring the additional construction of ladders. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the overall bottom structure of this utility model;

[0021] Figure 3 This is a schematic diagram showing the distribution of the inner liner rod and reinforcing ring of this utility model;

[0022] Figure 4 This is a schematic diagram of the insert structure of this utility model;

[0023] Figure 5 This is a top view schematic diagram of the outer perimeter and inner perimeter of this utility model.

[0024] In the diagram: 1. Bottom plate; 11. Outer perimeter baffle; 12. Inner perimeter baffle; 13. Inner liner rod; 14. Reinforcing ring; 15. Push-in frame; 16. Insert post; 17. Tip protrusion; 18. Barb; 19. Protruding edge plate; 2. Rod seat; 21. Support rod; 3. Connecting seat; 31. Fastening screw; 4. Positioning seat; 41. Positioning rod one; 42. Foot pedal; 43. Positioning cylinder; 44. Positioning rod two. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0026] Example 1

[0027] Reference Figures 1-5A cofferdam device for hydraulic construction includes a bottom plate 1, which is a hollow annular structure. An outer perimeter 11 and an inner perimeter 12 are welded and fixed to the top of the bottom plate 1. The outer perimeter 11 surrounds the outer perimeter 12. A plurality of inner lining rods 13 are filled between the outer perimeter 11 and the inner perimeter 12. The surfaces of the inner lining rods 13 are welded and fixed to the inner wall of the outer perimeter 11 and the surface of the inner perimeter 12, respectively. The inner lining rods 13 are equidistantly distributed in an annular shape along the inner wall of the outer perimeter 11. A reinforcing ring 14 is also embedded between the plurality of inner lining rods 13. The outer perimeter 11 and the inner perimeter 12 form a double-layered combined structure, which can effectively increase the water-blocking effect of the cofferdam. The addition of inner lining rods 13 between the outer perimeter 11 and the inner perimeter 12 can further increase the overall integrity. The gaps formed between the outer perimeter 11, the inner perimeter 12 and the inner lining rods 13 can be filled with sand and gravel particles for compaction. At the same time, the weight of the entire cofferdam is increased, making its installation on the riverbed more stable.

[0028] The bottom plate 1 is provided with a push frame 15 at the lower end. The outer wall of the push frame 15 is a conical structure, and the lower end of the push frame 15 is a pointed structure. The push frame 15 is the part that is inserted into the riverbed. Its conical structure can better embed into the riverbed when it is pushed, thereby ensuring that the upper enclosure part is placed vertically and stably.

[0029] The outer perimeter 11 is covered with a convex edge plate 19. Several inserts 16 are welded and fixed to the lower end of the convex edge plate 19. The lower end of the inserts 16 is provided with a pointed protrusion 17. Several barbs 18 are welded and fixed to the surface of the inserts 16. By adding inserts 16, the positioning effect of the overall cofferdam and the riverbed can be further improved in conjunction with the push frame 15. The multi-point reinforcement support of the inserts 16 can ensure the safety and stability of the cofferdam during long-term construction.

[0030] The outer perimeter 11 and the inner perimeter 12 are of the same height, both are cylindrical structures, and are made of stainless steel. The cylindrical structure can better divert water flow when it impacts the load-bearing surface, thus preventing the cofferdam from being damaged due to excessive water impact.

[0031] The inner wall of the inner enclosure 12 is fixedly equipped with several internal support components. The internal support components include rod seats 2 and support rods 21. The two ends of the support rods 21 are respectively fitted with rod seats 2. The rod seats 2 are fixed to the inner wall of the inner enclosure 12 by screws. Multiple support rods 21 are distributed along the same horizontal plane inside the inner enclosure 12, which can strengthen the cofferdam from the inside. Multiple support rods 21 distributed along the same vertical plane can form a ladder structure, which facilitates workers to go up and down to enter and exit the cofferdam.

[0032] The upper ends of the outer perimeter 11 and the inner perimeter 12 are both covered with connecting seats 3. The connecting seats 3 are U-shaped structures. The two ends of the connecting seats 3 are fixedly installed to the outer perimeter 11 and the inner perimeter 12 by fastening screws 31 respectively. By adding connecting seats 3 at the ports of the outer perimeter 11 and the inner perimeter 12, the connection strength of the two perimeters can be further improved, and separation and loosening can be avoided.

[0033] The upper end of the connecting seat 3 is fixed with a positioning seat 4, and a positioning rod 41 is slidably inserted inside the positioning seat 4. Through the distribution of multiple positioning rods 41, the foot pedal 42 can have multiple support points at the fence position.

[0034] Among them, the upper ends of several positioning rods 41 are all equipped with the same foot pedal 42. The foot pedal 42 is a circular structure. The foot pedal 42 can be used by workers to walk on the top of the cofferdam during the construction process, which facilitates entering and exiting the cofferdam and transporting objects.

[0035] Among them, several positioning cylinders 43 are fixedly distributed on the upper end of the convex edge plate 19, and positioning rods 44 are inserted and fixed inside the positioning cylinders 43. The upper end of the positioning rods 44 is fixed to the lower end of the pedal 42 by screws. The positioning rods 44 and the connecting seat 3 are staggered. In order to further improve the support stability of the pedal 42, the load-bearing capacity of the pedal 42 can be further enhanced by adding the positioning rods 44 as auxiliary support on the convex edge plate 19.

[0036] In practice

[0037] The outer perimeter 11 and inner perimeter 12 of this scheme are welded to form a double-layer cylindrical structure with the same height and made of stainless steel. The cylindrical design can effectively divert the impact water flow and reduce local pressure. The inner lining rods 13 are distributed in a ring at equal intervals and welded between the inner wall of the outer perimeter 11 and the outer wall of the inner perimeter 12 to form a grid-like support frame, which improves the overall deformation resistance. The reinforcing ring 14 passes through the inner lining rods 13 laterally to further strengthen the grid structure. The gaps between the outer perimeter 11, the inner perimeter 12 and the inner lining rods 13 are filled with sand and gravel particles. The dense filling increases the self-weight of the cofferdam and prevents displacement caused by water impact. The convex edge plate 19 is fixed to the outer wall of the outer perimeter 11. The insert 16 welded to its lower end is embedded into the riverbed through the pointed protrusion 17 and the barb 18. It works in conjunction with the conical tip of the propulsion frame 15 to achieve multi-point anchoring and ensure the vertical stability of the cofferdam on the riverbed.

[0038] The propulsion frame 15 is welded to the lower end of the bottom plate 1. Its conical outer wall and pointed structure facilitate insertion into the soft soil layer of the riverbed. The cofferdam is initially positioned by applying downward pressure. The inserts 16 are evenly distributed along the lower end of the convex plate 19. The pointed protrusions 17 reduce the insertion resistance. The barbs 18 prevent pull-out by interlocking with the soil layer in the opposite direction. The propulsion frame 15 and the inserts 16 form a double anchoring system: the propulsion frame 15 provides the main bearing capacity and distributes the weight of the cofferdam; the inserts 16 serve as auxiliary fixing points to resist the impact of lateral water flow. The welding distribution of the barbs 18 increases the contact area with the soil and avoids slippage caused by local stress concentration.

[0039] The pole seat 2 is fixed to the inner wall of the inner enclosure 12 by screws. The two ends of the support rod 21 are sleeved on the pole seat 2 to form a horizontal annular reinforcing ring. Multiple support rods 21 are evenly distributed in the same plane to resist the radial compression of the enclosure by water pressure. The vertically arranged support rods 21 form a ladder structure, which allows workers to climb in and out of the cofferdam to meet the needs of construction and maintenance. The connecting seat 3 covers the upper port of the outer enclosure 11 and the inner enclosure 12. The U-shaped structure is locked with fastening screws 31 to prevent the port from deforming. The positioning seat 4 is fixed to the upper end of the connecting seat 3. The positioning rod 41 is slidably inserted into it to form an adjustable support network. The foot pedal 42 is installed on the top of the positioning rod 41. The circular design provides a circular working platform to facilitate material transportation and personnel movement.

[0040] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A cofferdam device for hydraulic construction, comprising a bottom plate (1), characterized in that: The bottom plate (1) is a hollow annular structure. An outer perimeter (11) and an inner perimeter (12) are welded and fixed on the top of the bottom plate (1). The outer perimeter (11) surrounds the outside of the inner perimeter (12). Several inner lining rods (13) are filled between the outer perimeter (11) and the inner perimeter (12). The surfaces of the inner lining rods (13) are welded and fixed to the inner wall of the outer perimeter (11) and the surface of the inner perimeter (12). The inner lining rods (13) are equidistantly distributed in an annular shape along the inner ring wall of the outer perimeter (11). A reinforcing ring (14) is also embedded between several inner lining rods (13). The bottom plate (1) is provided with a push frame (15) at its lower end. The outer wall of the push frame (15) is a conical structure, and the lower end of the push frame (15) is a pointed structure. The outer perimeter (11) is covered with a convex edge plate (19), and a number of inserts (16) are welded and fixed to the lower end of the convex edge plate (19). The lower end of the inserts (16) is provided with a pointed protrusion (17), and a number of barbs (18) are welded and fixed to the surface of the inserts (16).

2. The cofferdam device for hydraulic construction according to claim 1, characterized in that: The outer perimeter (11) and the inner perimeter (12) are of the same height, both are cylindrical structures, and are made of stainless steel.

3. A cofferdam device for hydraulic construction according to claim 1, characterized in that: The inner wall of the inner enclosure (12) is fixedly installed with several internal support components. The internal support components include rod seats (2) and support rods (21). The two ends of the support rods (21) are respectively fitted with rod seats (2). The rod seats (2) are fixed to the inner wall of the inner enclosure (12) by screws.

4. A cofferdam device for hydraulic construction according to claim 3, characterized in that: The upper end of the outer perimeter (11) and the upper end of the inner perimeter (12) are both covered with connecting seats (3). The connecting seats (3) are U-shaped structures. The two ends of the connecting seats (3) are fixedly installed to the outer perimeter (11) and the inner perimeter (12) respectively by fastening screws (31).

5. A cofferdam device for hydraulic construction according to claim 4, characterized in that: The upper end of the connecting seat (3) is fixed with a positioning seat (4), and a positioning rod (41) is slidably inserted inside the positioning seat (4).

6. A cofferdam device for hydraulic construction according to claim 5, characterized in that: The upper ends of several positioning rods (41) are all equipped with the same pedal (42), which is a circular structure.

7. A cofferdam device for hydraulic construction according to claim 6, characterized in that: The upper end of the convex edge plate (19) is fixed with several positioning cylinders (43). The positioning cylinders (43) are inserted and fixed with positioning rods (44). The upper end of the positioning rods (44) is fixed to the lower end of the foot pedal (42) by screws. The positioning rods (44) and the connecting seat (3) are staggered.

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