Fabricated cofferdam

Abstract

The utility model discloses an assembly type cofferdam, relates to the technical field of cofferdams, and aims to solve the problems that when silt is poured between two metal baffles, a large amount of dust is raised by the silt, the surrounding environment of a river channel is influenced, and the environmental protection effect is influenced. According to the technical scheme, the device is characterized by comprising a plurality of guide columns and baffles spliced with each other, the guide columns and the baffles are detachably connected, a plurality of supporting rods are detachably connected to the guide columns, a working platform is detachably connected to the supporting rods, cavities are formed in the baffles, water conveying pipes are fixedly connected into the cavities, and one ends of the water conveying pipes penetrate through the baffles to the outside. When the cofferdam is constructed, river water can be poured into the cavity through the baffle and the cavity in the baffle, so that the weight of the baffle is increased, the stability of the baffle is improved, the baffle is prevented from being washed away by a riverway, the river water is poured into the baffle, a large amount of dust cannot be generated, the surrounding environment of the riverway is prevented from being influenced, and the environmental protection effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of cofferdam technology, and more specifically, to a prefabricated cofferdam. Background Technology

[0002] A cofferdam is a temporary retaining structure built in water conservancy projects to prevent river water from entering the cofferdam and thus avoid affecting the construction progress.

[0003] When constructing existing cofferdams, the construction location and required size of the construction site are usually planned first. Then, according to the planned location, several guide pillars are inserted into the river channel as basic support. Next, several metal baffles are inserted into the river channel and installed on the side walls of the guide pillars, forming a double-layer structure between the metal baffles and the guide pillars. Then, silt is poured between the two metal baffles to increase the weight between the two metal baffles, improve the stability of the metal baffles, and prevent the metal baffles from being washed away by the river channel. Finally, water pumps are used to pump out the river water inside the metal baffles, and support rods are added inside the cofferdam to complete the construction of the cofferdam.

[0004] However, when silt is poured between the two metal baffles, the silt will raise a lot of dust, affecting the surrounding environment of the river and the environmental protection effect.

[0005] Therefore, a new solution is needed to address this problem. Utility Model Content

[0006] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a prefabricated cofferdam, which solves the problem that when silt is poured between two metal baffles, a large amount of dust is raised, which affects the surrounding environment of the river and the environmental protection effect.

[0007] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a prefabricated cofferdam, comprising several guide columns and interlocking baffles, wherein the guide columns and baffles are detachably connected, several support rods are detachably connected to the guide columns, and a working platform is detachably connected to the support rods. A cavity is formed inside the baffle, and a water supply pipe is fixedly connected inside the cavity. One end of the water supply pipe passes through the baffle to the outside. An air exchange port and a water exchange port are formed at the top of the baffle, and a water outlet pipe is fixedly connected to the bottom of the water exchange port. Two limiting plates are rotatably connected to the baffle to control the opening and closing of the air exchange port and the water exchange port respectively. The limiting plates and the baffle are connected by spring hinges. An opening is formed on the working platform, and a net is fixedly connected to the opening. A water pump is provided inside the net, and an air pump is provided on the working platform. Both the output end of the water pump and the output end of the air pump are fixedly connected to connecting pipes.

[0008] The present invention is further configured such that: the side wall of the guide post is provided with a plurality of sliding grooves for the baffle to slide, and sealing strips are fixedly connected to both sides of the baffle; when the baffle slides in the sliding groove, the sealing strips and the side wall of the guide post abut against each other.

[0009] The present invention is further configured such that: a plurality of the support rods are arranged intersectingly, the side wall of the support rods is provided with slots for splicing themselves together, and the guide post is provided with an installation slot for inserting the support rods.

[0010] The present invention is further configured such that: a plurality of fixed rods of different lengths are fixedly connected to the bottom of the working platform, and when the working platform and the support rods come into contact with each other, the two ends of the fixed rods and the support rods come into contact with each other.

[0011] The present invention is further configured such that: a connecting ring 1 is fixedly connected to one end of the water supply pipe, a connecting ring 2 is fixedly connected to one end of the connecting pipe, a limiting block is fixedly connected to the connecting ring 1, and a limiting groove for the limiting block to be inserted is provided on the connecting ring 2, and the limiting block and the limiting groove are slidably connected.

[0012] The present invention is further configured such that: a positioning rod is fixedly connected to the bottom of the baffle, the bottom of the positioning rod is conical, and a positioning groove for the positioning rod to be inserted is provided on the baffle.

[0013] The present invention is further configured such that: a fixing plate is fixedly connected to both sides of the baffle, and a sealing layer is fixedly connected to the bottom of the baffle.

[0014] In summary, this utility model has the following beneficial effects: When constructing a cofferdam, the baffle is designed so that river water can be poured into the cavity inside the baffle, thereby increasing the weight of the baffle, improving its stability, preventing the baffle from being washed away by the river, and preventing the baffle from generating a large amount of dust when filled with river water, thus avoiding impacting the environment around the river and improving environmental protection. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ;

[0016] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ;

[0017] Figure 3 This is a cross-sectional view of the present invention;

[0018] Figure 4 This is a schematic diagram of the structure of the present invention. Figure 3 ;

[0019] Figure 5 This is an exploded view of the present invention.

[0020] In the diagram: 1. Guide column; 2. Baffle; 3. Support rod; 4. Working platform; 5. Chamber; 6. Water supply pipe; 7. Air vent; 8. Water exchange port; 9. Water outlet pipe; 10. Limiting plate; 11. Spring hinge; 12. Opening; 13. Net; 14. Water pump; 15. Air pump; 16. Connecting pipe; 17. Slide groove; 18. Sealing strip; 19. Slot; 20. Mounting slot; 21. Fixing rod; 22. Connecting ring one; 23. Connecting ring two; 24. Limiting block; 25. Limiting groove; 26. Positioning rod; 27. Positioning groove; 28. Fixing plate; 29. ​​Sealing layer. Detailed Implementation

[0021] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other.

[0022] In the description of this utility model, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] A type of prefabricated cofferdam, such as Figures 1-5As shown, it includes several guide posts 1 and interconnected baffles 2. The baffles 2 can be made of thin metal sheets, which can reduce the weight of the baffles 2, making it easier for workers to transport and install them. The guide posts 1 and the baffles 2 are detachably connected. Several support rods 3 are detachably connected to the guide posts 1, and a work platform 4 is detachably connected to the support rods 3. The work platform 4 facilitates the subsequent installation of the baffles 2 and the guide posts 1. A chamber 5 is opened inside the baffles 2, and a water pipe 6 is fixedly connected inside the chamber 5. One end extends through the baffle 2 to the outside. The top of the baffle 2 is provided with an air vent 7 and a water inlet 8. The bottom of the water inlet 8 is fixedly connected to a water outlet pipe 9. Two limiting plates 10 are rotatably connected to the baffle 2 to control the opening and closing of the air vent 7 and the water inlet 8 respectively. The limiting plates 10 and the baffle 2 are connected by a spring hinge 11. An opening 12 is provided on the working platform 4. A net 13 is fixedly connected to the opening 12. A water pump 14 is provided inside the net 13. An air pump 15 is provided on the working platform 4. The output ends of the water pump 14 and the air pump 15 are both fixedly connected to a connecting pipe 16.

[0025] When making baffle 2, several metal sheets are cut to the required specifications, and holes are reserved for fixing water pipe 6. After the metal sheets are cut, they are fixed together by welding to form baffle 2. At the same time, a cavity 5 is reserved in baffle 2. After baffle 2 is made, water pipe 6 is placed in the air and fixed together with the reserved holes, thus completing the making of baffle 2.

[0026] During the construction of the cofferdam, several guide columns 1 are inserted into the pre-planned positions. Then, the support rods 3 and the guide columns 1 are installed together. The working platform 4 is then installed on the support rods 3. At the same time, the net 13 is submerged in the river channel. Then, the water pump 14 and the air pump 15 are moved to the working platform 4, and the water pump 14 is placed in the net 13. The water pump 14 is then brought into contact with the river channel, thus completing the construction of the working platform 4 and the infrastructure.

[0027] After the work platform 4 is erected, a crane boat is used to lift the baffle 2 and move it between the two guide columns 1. Then, the baffle 2 is driven downward and installed with the guide columns 1. After the baffle 2 and the guide columns 1 are installed, the connecting pipe 16 and the water supply pipe 6 located at the output end of the water pump 14 are installed together. Then, the water pump 14 is started to draw water from the river into the connecting pipe 16. The water is then transported to the cavity of the baffle 2 through the connecting pipe 16 and the water supply pipe 6. At this time, the cavity inside the baffle 2 will be squeezed upward by the river water and exert a thrust on the limiting plate 10 located at the vent 7, causing the limiting plate 10 to rotate upward. At this time, the vent 7 is in the open state. At this time, the spring hinge 11 undergoes elastic deformation, which can compress the cavity inside the limiting plate 10. The air is discharged outwards. After the air in the baffle 2 is completely discharged, the spring hinge 11 deforms and restores its original position, causing the limiting plate 10 to return to its original position, closing the ventilation port 7, and separating the connecting pipe 16 and the water supply pipe 6. Then, the above operation is repeated to splice several baffles 2 and guide columns 1 together to form a cofferdam. Finally, the working platform 4 and support rod 3 are disassembled and the river water in the cofferdam is discharged outwards, thus completing the construction of the cofferdam. Through the setting of the baffle 2, the river water can be poured into the cavity inside the baffle 2, thereby increasing the weight of the baffle 2, improving the stability of the baffle 2, preventing the baffle 2 from being washed away by the river, and the filling of the baffle 2 with river water will not produce a large amount of dust, avoiding the impact on the environment around the river and improving the environmental protection effect.

[0028] When the cofferdam needs to be dismantled, the connecting pipe 16 at the output end of the air pump 15 and the water supply pipe 6 are connected to each other. Then, the air pump 15 is started to pump the external chamber into the chamber and squeeze the river water in the chamber. At this time, the river water in the chamber will be affected and discharged into the outlet pipe 9 and move upward along the water supply pipe 6. When the river water comes into contact with the limiting plate 10 located at the water exchange port 8, the river water will exert a pushing force on the limiting plate 10, causing the limiting plate 10 to rotate and the spring hinge 11 to undergo elastic deformation. When the water in the outlet pipe 9 is completely drained, the spring hinge 11 returns to its original state and closes the water exchange port 8. At this time, the weight of the baffle 2 itself becomes lighter, which makes it easier to dismantle and move the baffle 2 and facilitates the operation of the staff. After the river water in the baffle 2 is drained, the baffle 2 is lifted again by the crane boat and separated from the guide column 1, thus completing the dismantling of the cofferdam.

[0029] Furthermore, the guide post 1 has several grooves 17 on its side wall for the baffle 2 to slide. Sealing strips 18 are fixedly connected to both sides of the baffle 2. When the baffle 2 slides in the groove 17, the sealing strips 18 and the side wall of the guide post 1 abut against each other. The sealing strips 18 improve the sealing effect between the baffle 2 and the guide post 1, preventing river water from leaking through the gap between the baffle 2 and the guide post 1. When installing the baffle 2 and the guide post 1, the baffle 2 is inserted into the groove 17 and moves downward along the groove 17, while the sealing strips 18 and the guide post 1 abut against each other, thus completing the installation of the baffle 2 and the guide post 1. The grooves 17 facilitate the installation of the baffle 2 and the guide post 1, making it easy for operators to operate.

[0030] Furthermore, the intersecting arrangement of several support rods 3 enhances the stability of the joint after two support rods 3 are spliced ​​together. The sidewalls of the support rods 3 have slots 19 for splicing themselves together. When splicing two support rods 3, the slots 19 on the two support rods 3 come into contact, facilitating the installation of the two support rods 3. The guide column 1 has mounting slots 20 for inserting the support rods 3. When installing the support rods 3 and the guide column 1, the support rods 3 are inserted into the guide column 1, facilitating the fixation of the support rods 3 and the guide column 1. The bottom of the working platform 4 is fixedly connected to... Several fixed rods 21 of varying lengths are provided. When the working platform 4 and the support rod 3 are in contact, the two ends of the fixed rods 21 are in contact with the support rod 3. When installing the working platform 4 and the support rod 3, the working platform 4 is placed on the support rod 3, and the fixed rods 21 are in contact with the support rod 3. The fixed rods 21 can provide support for the support rod 3, which can further improve the stability of the support rod 3. When separating the working platform 4 and the support rod 3, the working platform 4 can be separated simply by lifting the working platform 4 upwards, which is convenient for the operator.

[0031] Furthermore, one end of the water supply pipe 6 is fixedly connected to a connecting ring 22, and one end of the connecting pipe 16 is fixedly connected to a connecting ring 23. A limiting block 24 is fixedly connected to the connecting ring 22, and a limiting groove 25 is provided on the connecting ring 23 for the limiting block 24 to be inserted. The limiting block 24 and the limiting groove 25 are slidably connected. When the connecting pipe 16 and the water supply pipe 6 are installed together, the limiting block 24 is inserted into the limiting groove 25, and at the same time, the side walls of the connecting ring 22 and the connecting ring 23 are pressed against each other. Then, rotating the connecting ring 22 causes the limiting block 24 to rotate within the limiting groove 25, thereby completing the installation of the connecting pipe 16 and the water supply pipe 6. The connection ring 22 and the connecting ring 23 ensure a tighter fit between the connecting pipe 16 and the water supply pipe 6 during installation, improving the sealing effect. At the same time, the limiting block 24 and the limiting groove 25 facilitate the installation of the connecting pipe 16 and the water supply pipe 6, making it easier for operators to operate.

[0032] like Figures 1-3 As shown, a positioning rod 26 is fixedly connected to the bottom of the baffle 2. The bottom of the positioning rod 26 is conical. The positioning rod 26 is slidably connected to the ventilation port 7. When the baffle 2 is inserted into the river channel, the conical bottom of the positioning rod 26 facilitates its insertion into the river channel, further improving the fixing effect of the baffle 2. When splicing the baffle 2, the positioning rod 26 can be inserted into the positioning groove 27, making it easier for workers to position the baffle 2 and install it. Fixing plates 28 are fixedly connected to both sides of the baffle 2. When the baffle 2 is spliced ​​together, the fixing plates 28 and the side walls of the other baffle 2 can come into contact with each other, improving the stability of the splice and further improving the fixing effect of the baffle 2. A sealing layer 29 is fixedly connected to the bottom of the baffle 2. The sealing layer 29 can be made of rubber, which can improve the sealing effect between the baffles 2 and prevent river water from seeping into the cofferdam.

[0033] The construction process of this utility model is as follows: When constructing the cofferdam, several guide columns 1 are inserted into the pre-planned positions. Then, the support rods 3 and the guide columns 1 are installed together. Then, the working platform 4 is installed on the support rods 3. At the same time, the net 13 is submerged in the river channel. Then, the water pump 14 and the air pump 15 are transported to the working platform 4, and the water pump 14 is placed in the net 13. The water pump 14 is brought into contact with the river channel, thereby completing the construction of the working platform 4 and the infrastructure.

[0034] After the work platform 4 is erected, a crane boat is used to lift the baffle 2 and move it between the two guide columns 1. Then, the baffle 2 is driven downward and installed with the guide columns 1. After the baffle 2 and the guide columns 1 are installed, the connecting pipe 16 and the water supply pipe 6 located at the output end of the water pump 14 are installed together. Then, the water pump 14 is started to draw water from the river into the connecting pipe 16. The water is then transported to the cavity of the baffle 2 through the connecting pipe 16 and the water supply pipe 6. At this time, the cavity inside the baffle 2 will be squeezed upward by the river water and exert a thrust on the limiting plate 10 located at the vent 7, causing the limiting plate 10 to rotate upward. At this time, the vent 7 is in the open state. At this time, the spring hinge 11 undergoes elastic deformation, which can compress the cavity inside the limiting plate 10. The air is discharged outwards. After the air in the baffle 2 is completely discharged, the spring hinge 11 deforms and restores its original position, causing the limiting plate 10 to return to its original position, closing the ventilation port 7, and separating the connecting pipe 16 and the water supply pipe 6. Then, the above operation is repeated to splice several baffles 2 and guide columns 1 together to form a cofferdam. Finally, the working platform 4 and support rod 3 are disassembled and the river water in the cofferdam is discharged outwards, thus completing the construction of the cofferdam. Through the setting of the baffle 2, the river water can be poured into the cavity inside the baffle 2, thereby increasing the weight of the baffle 2, improving the stability of the baffle 2, preventing the baffle 2 from being washed away by the river, and the filling of the baffle 2 with river water will not produce a large amount of dust, avoiding the impact on the environment around the river and improving the environmental protection effect.

[0035] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A prefabricated cofferdam, comprising a plurality of guide columns (1) and interlocking baffles (2), characterized in that: The guide post (1) and the baffle (2) are detachably connected. Several support rods (3) are detachably connected to the guide post (1). A working platform (4) is detachably connected to the support rods (3). A chamber (5) is opened inside the baffle (2). A water supply pipe (6) is fixedly connected inside the chamber (5). One end of the water supply pipe (6) passes through the baffle (2) to the outside. An air exchange port (7) and a water exchange port (8) are opened at the top of the baffle (2). A water outlet pipe (9) is fixedly connected to the bottom of the water exchange port (8). The baffle (2) is... Two limiting plates (10) are rotatably connected to control the opening and closing of the air exchange port (7) and the water exchange port (8) respectively. The limiting plate (10) and the baffle (2) are connected by a spring hinge (11). An opening (12) is provided on the working platform (4). A net (13) is fixedly connected to the opening (12). A water pump (14) is provided in the net (13). An air pump (15) is provided on the working platform (4). A connecting pipe (16) is fixedly connected to the output end of the water pump (14) and the output end of the air pump (15).

2. The prefabricated cofferdam according to claim 1, characterized in that: The guide post (1) has several grooves (17) on its side wall for sliding the baffle (2). The baffle (2) is fixedly connected to both sides with sealing strips (18). When the baffle (2) slides in the groove (17), the sealing strips (18) and the side wall of the guide post (1) abut against each other.

3. A prefabricated cofferdam according to claim 1, characterized in that: Several of the support rods (3) are arranged in a crisscross pattern. The side wall of the support rod (3) is provided with a slot (19) for splicing itself with each other. The guide post (1) is provided with an installation slot (20) for inserting the support rod (3).

4. A prefabricated cofferdam according to claim 3, characterized in that: The bottom of the work platform (4) is fixedly connected with several fixed rods (21) of different lengths. When the work platform (4) and the support rod (3) come into contact with each other, the two ends of the fixed rod (21) and the support rod (3) come into contact with each other.

5. A prefabricated cofferdam according to claim 1, characterized in that: One end of the water supply pipe (6) is fixedly connected to a connecting ring one (22), and one end of the connecting pipe (16) is fixedly connected to a connecting ring two (23). A limiting block (24) is fixedly connected to the connecting ring one (22), and a limiting groove (25) is provided on the connecting ring two (23) for the limiting block (24) to be inserted. The limiting block (24) and the limiting groove (25) are slidably connected.

6. A prefabricated cofferdam according to claim 1, characterized in that: The bottom of the baffle (2) is fixedly connected to a positioning rod (26), the bottom of the positioning rod (26) is conical, and the baffle (2) has a positioning groove (27) for the positioning rod (26) to be inserted.

7. A prefabricated cofferdam according to claim 1, characterized in that: The baffle (2) is fixedly connected to two sides by fixing plates (28), and a sealing layer (29) is fixedly connected to the bottom of the baffle (2).

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