A cofferdam retaining structure for a water conservancy construction passage

Abstract

The application discloses a cofferdam retaining structure of a water conservancy construction passage and relates to the technical field of water conservancy engineering. The cofferdam retaining structure comprises a cofferdam plate, the outer surface of the lower end of the cofferdam plate is fixedly connected with a plug column at equal distances, the bottom end of the plug column is conical, the outer surface of one side of the cofferdam plate is provided with a material guide frame, a slot hole is formed in the cofferdam plate and corresponds to the plug column, and the slot hole penetrates into the interior of the plug column at one end. The cofferdam plate is provided with an arc-shaped plate on one side, and elastic sheets are arranged between the two groups of arc-shaped plates. When water continuously impacts the arc-shaped plate, the arc-shaped plate repeatedly extrudes the elastic sheets at one end, the elastic sheets push the supporting strips to move the sliding blocks, the arc-shaped plate buffers the impact force of the water under the action of the spring and the elastic sheets, the damage of the water to the cofferdam plate is slowed down, the replacement frequency of the cofferdam plate is greatly reduced, and the reinforcement cost of the dam is reduced.

Description

Technical Field

[0001] This invention relates to the field of water conservancy engineering technology, and in particular to a cofferdam retaining structure for a construction channel in water conservancy projects. 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 structure. It is mainly used in hydraulic structures. Except when it is part of a formal building, cofferdams are mostly dismantled after use. The height of the cofferdam must be higher than the highest water level that may occur during the construction period. For example, a cofferdam for water conservancy projects disclosed in Chinese Patent (Announcement No.: CN218667593U) achieves watertightness between the bottom of the water-retaining plate and the surface of the dam, reducing the difficulty of water-retaining plate installation.

[0003] However, the above technical solution uses a water-blocking plate to directly block water. In actual use, the water flow will continuously impact the water-blocking plate. Under long-term impact, the connection between the water-blocking plate and the dam is very easy to loosen, or even cause damage to the water-blocking plate. After the water-blocking plate is damaged due to the impact of the water flow, the damaged water-blocking plate needs to be replaced, which greatly increases the overall maintenance cost. Summary of the Invention

[0004] The purpose of this invention is to address the problem that existing technologies use water-blocking plates to directly block water, but in actual use, the water flow continuously impacts the water-blocking plates. Under prolonged impact, the connection between the water-blocking plates and the embankment is easily loosened, and the water-blocking plates may even be damaged. After the water-blocking plates are damaged due to the impact of the water flow, the damaged water-blocking plates need to be replaced, which greatly increases the overall maintenance cost. Therefore, this invention proposes a cofferdam retaining structure for water conservancy engineering construction channels.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a cofferdam retaining structure for a construction channel of a water conservancy project, comprising a cofferdam plate, wherein inserts are fixedly connected at equal intervals on the lower outer surface of the cofferdam plate, and the bottom end of the inserts is conical; a material guide frame is provided on one outer surface of the cofferdam plate, and slots are opened inside the cofferdam plate at positions corresponding to the inserts; one end of the slot penetrates into the interior of the inserts, and the other end of several sets of slots penetrates into the exterior of the cofferdam plate and communicates with the material guide frame;

[0006] The outer surface of the insert is fixedly connected with several sets of annular frames one at equal intervals from top to bottom, and the inner diameter of the annular frames one decreases from top to bottom. Several sets of through holes are opened on the inner surface of the slot corresponding to the positions of the annular frames one. The outer surface of the annular frames one is fixedly connected with annular frames two at equal intervals, and an receiving groove is formed between the annular frames two and the annular frames one. The inner diameter of the annular frames two increases from top to bottom.

[0007] The inner surface of the first annular frame is provided with a discharge hole at a position corresponding to the second annular frame. A base plate is fixedly connected to the outer surface of the baffle plate on the side away from the guide frame near the bottom end. An anti-impact mechanism is provided between the base plate and the baffle plate to improve the stability of the baffle plate.

[0008] Furthermore, the impact-resistant mechanism includes an arc-shaped plate and an elastic sheet; an arc-shaped plate is fixedly connected to both ends of the outer surface of the baffle plate away from the guide frame, and one end of the arc-shaped plate is fixedly connected to the baffle plate, while the other end is a free end. An elastic sheet is fixedly connected between the two sets of arc-shaped plates. The elastic sheet is arc-shaped in its natural state, and the arc-shaped plate is made of elastic stainless steel. The outer surface of the arc-shaped plate is in contact with the outer surface of the base plate, and a sandbag is provided between the arc-shaped plate and the base plate.

[0009] Furthermore, the outer surface of the arc-shaped plate is provided with several sets of guide holes, and a guide ring is fixedly connected to the side of the outer surface of the arc-shaped plate away from the baffle plate at the position corresponding to the guide hole. The outer diameter of the guide ring decreases sequentially from the baffle plate to the guide hole.

[0010] Furthermore, the upper outer surface of the elastic sheet is rotatably connected to support bars near both sides, and the upper outer surface of the baffle plate is provided with movable grooves at positions corresponding to the two sets of support bars. A guide post is fixedly connected inside the movable groove, and a slider is movably connected to the outer surface of the guide post. The support bar is rotatably connected to the slider, and a spring is provided outside the guide post. One end of the spring is fixedly connected to the slider, and the other end is fixedly connected to the movable groove.

[0011] Furthermore, each of the two sets of arc-shaped plates has a movable strip one hinged to the outer surface of the outer surface of the two sets of arc-shaped plates near the side of the enclosure plate, and a movable strip two is hinged to the outer surface of the enclosure plate at the position corresponding to the movable strip one. A movable plate is provided between the movable strip one and the movable strip two, and the movable strip one and the movable strip two are all hinged to the movable plate.

[0012] Furthermore, movable holes are provided on the upper outer surface of the movable plate and the upper outer surface of the base plate. A rod is provided between the two sets of movable holes corresponding to each other. The bottom end of the rod is tapered, and the diameter of the rod cross-section is smaller than the inner diameter of the movable hole. Several sets of elastic clips are provided at equal intervals from top to bottom on the outer surface of the rod.

[0013] Furthermore, the elastic clip includes several sets of support plates, one end of which is a free end and the other end is fixedly connected to the insertion rod. The support plate and the insertion rod are an integral structure. The free end of the support plate is inclined away from the insertion rod. Several sets of arc-shaped strips are evenly arranged on the outer surface of the support plate, and the cross-section of the arc-shaped strips is triangular.

[0014] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0015] 1. In this invention, an arc-shaped plate is set on one side of the enclosure panel, and an elastic sheet is set between two sets of arc-shaped plates. As the water flow continuously impacts the arc-shaped plate, one end of the arc-shaped plate repeatedly squeezes the elastic sheet. The elastic sheet pushes the support bar to move the slider. Under the action of the spring and the elastic sheet, the arc-shaped plate buffers the impact force of the water flow, thereby reducing the damage of the water flow to the enclosure panel, greatly reducing the replacement frequency of the enclosure panel, and reducing the cost of dam reinforcement.

[0016] 2. In this invention, while the enclosure is stably installed on the ground using insert rods and posts, the movable strips 1 and 2 push and pull the moving plate up and down during the process of the curved plate being repeatedly squeezed by the water flow. As the moving plate moves down, it pushes the support plate, causing the support plate to drive the insert rods deeper into the ground. This continuously strengthens the connection between the enclosure and the ground during the process of the enclosure being impacted by the water flow, preventing the enclosure from loosening under long-term water flow impact and further improving the stability of the enclosure. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 This is a combined view of the insertion rod and insertion post of the present invention;

[0019] Figure 3 This is a combined view of the insert post and the annular frame of the present invention;

[0020] Figure 4 This is a schematic diagram of the impact-resistant mechanism of the present invention;

[0021] Figure 5 This is a combined view of the support strip and the enclosure panel of the present invention;

[0022] Figure 6 This is a combined view of the insertion rod and support piece of the present invention;

[0023] Figure 7 This is a combined view of the support sheet and the movable plate of the present invention.

[0024] Reference numerals in the attached drawings: 1. Enclosure plate; 2. Insert post; 3. Guide frame; 4. Circular frame one; 5. Circular frame two; 6. Base plate; 7. Impact-resistant mechanism; 71. Arc plate; 72. Elastic sheet; 73. Guide hole; 74. Guide ring; 75. Support bar; 76. Spring; 77. Sliding block; 8. Movable bar one; 81. Movable bar two; 82. Moving plate; 83. Insert rod; 84. Support plate; 85. Arc bar. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Example 1: As Figure 1-3 As shown, the present invention proposes a cofferdam retaining structure for a construction channel of a water conservancy project, including a cofferdam 1. The lower outer surface of the cofferdam 1 is fixedly connected with columns 2 at equal intervals, and the bottom end of the columns 2 is conical. The cofferdam 1 is placed vertically in the installation area, and the cofferdam 1 is fixed by inserting the columns 2 into the ground. A small number of sandbags are set on the upper outer surface of the base plate 6 at the position between the arc plate 71 and the cofferdam 1.

[0027] A material guide frame 3 is provided on one outer surface of the enclosure plate 1, and slots are opened inside the enclosure plate 1 at positions corresponding to the insertion post 2. One end of the slot penetrates into the interior of the insertion post 2, and the other end of several sets of slots penetrates into the exterior of the enclosure plate 1 and communicates with the material guide frame 3 to inject cement slurry into the material guide frame 3.

[0028] The outer surface of the insertion post 2 is fixedly connected with several sets of annular frames 4 at equal intervals from top to bottom, and the inner diameter of the annular frames 4 decreases from top to bottom. Several sets of through holes are opened on the inner surface of the slot corresponding to the annular frames 4. The outer surface of the annular frames 4 is fixedly connected with annular frames 5 at equal intervals, and a receiving groove is formed between the annular frames 5 and the annular frames 4. The inner diameter of the annular frames 5 increases from top to bottom, which increases the contact area for cement grout injection, improves stability, and reduces the difficulty of the insertion post 2 separating from the ground.

[0029] A discharge hole is provided on the inner surface of the first ring frame 4, corresponding to the position of the second ring frame 5. Cement slurry enters between the insertion rod 83 and the ground through the discharge hole to reinforce the enclosure plate 1. A base plate 6 is fixedly connected to the outer surface of the enclosure plate 1 on the side away from the guide frame 3 near the bottom. After the enclosure plate 1 is installed stably, cement slurry is injected into the guide frame 3. The cement slurry enters the interior of the first ring frame 4 and the second ring frame 5 through the slot, and finally enters the ground insertion hole and the interior of the insertion post 2, thereby enhancing the stability of the enclosure plate 1.

[0030] Example 2: Figure 1-5 As shown, the difference between this embodiment and embodiment 1 is that an anti-impact mechanism 7 for improving the stability of the enclosure plate 1 is provided between the base plate 6 and the enclosure plate 1. The anti-impact mechanism 7 includes an arc plate 71 and an elastic sheet 72.

[0031] Arc-shaped plates 71 are fixedly connected to both ends of the outer surface of the enclosure plate 1 on the side away from the guide frame 3. One end of the arc-shaped plate 71 is fixedly connected to the enclosure plate 1, and the other end is a free end. An elastic sheet 72 is fixedly connected between the two sets of arc-shaped plates 71. The elastic sheet 72 is arc-shaped in its natural state. The arc-shaped plate 71 is made of elastic stainless steel. The outer surface of the arc-shaped plate 71 is in contact with the outer surface of the base plate 6.

[0032] The outer surface of the arc plate 71 is provided with several sets of guide holes 73, and a guide ring 74 is fixedly connected to the side of the outer surface of the arc plate 71 away from the baffle plate 1 at the position corresponding to the guide hole 73. The outer diameter of the guide ring 74 decreases sequentially from the baffle plate 1 to the guide hole 73, and the water flows into the interior of the baffle plate 1 through the guide ring 74.

[0033] Support bars 75 are rotatably connected to the upper outer surface of the elastic sheet 72 near both sides, and movable grooves are opened on the upper outer surface of the baffle plate 1 at the positions corresponding to the two sets of support bars 75. Guide columns are fixedly connected inside the movable grooves, and sliders 77 are movably connected to the outer surface of the guide columns. The support bars 75 and sliders 77 are rotatably connected.

[0034] A spring 76 is provided on the outside of the guide column, and one end of the spring 76 is fixedly connected to the slider 77, and the other end is fixedly connected to the movable groove. During use, the water flow continuously impacts the arc plate 71, and one end of the arc plate 71 repeatedly squeezes the elastic sheet 72. The elastic sheet 72 pushes the support bar 75 to push the slider 77 to move. Under the action of the spring 76 and the elastic sheet 72, the arc plate 71 buffers the impact force of the water flow and reduces the damage of the water flow to the enclosure plate 1.

[0035] Example 3: Figure 2-7 As shown, the difference between this embodiment and Embodiments 1 and 2 is that the outer surfaces of the two sets of arc-shaped plates 71 are hinged with movable strip 1 8 on the side near the enclosure plate 1, and movable strip 2 81 is hinged to the outer surface of the enclosure plate 1 at the position corresponding to movable strip 1 8. A movable plate 82 is provided between the corresponding movable strip 1 8 and movable strip 2 81, and movable strip 1 8 and movable strip 2 81 are all hinged to the movable plate 82. During the process of the arc-shaped plate 71 being impacted by water flow and repeatedly squeezing the elastic sheet 72, movable strip 1 8 and movable strip 2 81 push and pull the movable plate 82 up and down.

[0036] Movable holes are provided on the upper outer surface of the movable plate 82 and the upper outer surface of the base plate 6. A rod 83 is provided between the two sets of movable holes. The bottom end of the rod 83 is tapered, and the diameter of the cross-section of the rod 83 is smaller than the inner diameter of the movable hole. Several sets of elastic clips are provided at equal intervals from top to bottom on the outer surface of the rod 83.

[0037] The elastic clip includes several sets of support plates 84. One end of each support plate 84 is a free end, and the other end is fixedly connected to the insertion rod 83. The support plate 84 and the insertion rod 83 are an integral structure. The free end of the support plate 84 is inclined away from the insertion rod 83. During the downward movement of the moving plate 82, the support plate 84 is pushed, causing the support plate 84 to drive the insertion rod 83 deeper into the ground. Several sets of arc-shaped strips 85 are evenly arranged on the outer surface of the support plate 84, and the cross-section of the arc-shaped strips 85 is triangular. Under its own elasticity, the support plate 84 pushes the arc-shaped strips 85 to fit with the corresponding movable holes, increasing the coefficient of friction between the support plate 84 and the movable holes, so that the moving plate 82 can push the insertion rod 83 downward.

[0038] The working process and principle of this invention are as follows:

[0039] Step 1: Place the fence panel 1 vertically in the installation area and fix the fence panel 1 by inserting the posts 2 into the ground. Place a small number of sandbags on the outer surface of the upper end of the base plate 6 between the arc plate 71 and the fence panel 1.

[0040] Step 2: After the fence panel 1 is installed and stabilized, cement grout is injected into the material guide frame 3. The cement grout enters the interior of the first ring frame 4 and the second ring frame 5 through the slots, and finally enters the interior of the ground insertion holes and the insertion posts 2, thereby enhancing the stability of the fence panel 1.

[0041] Step 3: After grouting is completed, insert the rod 83 into the corresponding movable plate 82 so that the rod 83 is inserted into the two sets of corresponding movable holes. Push the rod 83 downward to insert it into the ground. During the downward movement of the rod 83, the support plate 84 is squeezed by the movable hole and contracts towards the rod 83. After separating from the movable hole, it expands away from the rod 83 under its own elastic force. The upper and lower corresponding movable holes are misaligned under the action of the spring 76 and the elastic plate 72.

[0042] Step 4: During use, the water flow continuously impacts the arc-shaped plate 71, and one end of the arc-shaped plate 71 repeatedly squeezes the elastic sheet 72. The elastic sheet 72 pushes the support bar 75 to move the slider 77. Under the action of the spring 76 and the elastic sheet 72, the arc-shaped plate 71 buffers the impact force of the water flow, thereby reducing the damage of the water flow to the barrier plate 1.

[0043] Step 5: During the process of the arc plate 71 being repeatedly squeezed by the water flow, the movable strip 1 8 and movable strip 2 81 push and pull the moving plate 82 up and down. During the downward movement of the moving plate 82, the supporting plate 84 is pushed, so that the supporting plate 84 drives the insertion rod 83 to penetrate deeper into the ground.

[0044] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A cofferdam retaining structure for a construction passage in a water conservancy project, comprising a retaining plate (1), characterized in that, The lower outer surface of the enclosure (1) is fixedly connected with inserts (2) at equal intervals, and the bottom end of the inserts (2) is conical. A guide frame (3) is provided on one side of the outer surface of the enclosure (1), and slots are opened in the enclosure (1) at positions corresponding to the inserts (2). One end of the slots penetrates into the interior of the inserts (2), and the other ends of several sets of slots penetrate into the exterior of the enclosure (1) and communicate with the guide frame (3). The outer surface of the insert (2) is fixedly connected with several sets of annular frames (4) at equal distances from top to bottom, and the inner diameter of the annular frames (4) decreases from top to bottom. Several sets of through holes are opened on the inner surface of the slot corresponding to the position of the annular frames (4). The outer surface of the annular frames (4) is fixedly connected with annular frames (5) at equal distances, and a receiving groove is formed between the annular frames (5) and the annular frames (4). The inner diameter of the annular frames (5) increases from top to bottom. The inner surface of the first ring frame (4) is provided with a discharge hole at the position corresponding to the second ring frame (5). The outer surface of the baffle (1) is fixedly connected to the bottom end of the side away from the guide frame (3). An anti-impact mechanism (7) for improving the stability of the baffle (1) is provided between the bottom plate (6) and the baffle (1). The impact-resistant mechanism (7) includes an arc plate (71) and an elastic sheet (72); the outer surface of the enclosure plate (1) is fixedly connected to the arc plate (71) on the side away from the guide frame (3) near both ends, and one end of the arc plate (71) is fixedly connected to the enclosure plate (1), while the other end is a free end; An elastic sheet (72) is fixedly connected between the two sets of arc-shaped plates (71). The elastic sheet (72) is arc-shaped in its natural state. The arc-shaped plates (71) are made of elastic stainless steel. The outer surface of the arc-shaped plates (71) is in contact with the outer surface of the base plate (6). A sandbag is provided between the arc-shaped plates (71) and the base plate (6). Several sets of guide holes (73) are opened on the outer surface of the arc-shaped plates (71). A guide ring (74) is fixedly connected to the side of the outer surface of the arc-shaped plates (71) away from the enclosure plate (1) at the position corresponding to the guide hole (73). The outer diameter of the guide ring (74) is equal to that of the enclosure plate (1). The plate (1) decreases in the direction of the guide hole (73) in sequence. The upper outer surface of the elastic sheet (72) is rotatably connected to the support strip (75) near both sides. The upper outer surface of the baffle plate (1) is provided with movable grooves at the positions corresponding to the two sets of support strips (75). The movable groove is fixedly connected to the guide post, and the outer surface of the guide post is movably connected to the slider (77). The support strip (75) is rotatably connected to the slider (77). The guide post is provided with a spring (76), and one end of the spring (76) is fixedly connected to the slider (77), and the other end is fixedly connected to the movable groove.

2. The cofferdam retaining structure for a construction passage in a water conservancy project according to claim 1, characterized in that, Both sets of arc-shaped plates (71) have a movable strip (8) hinged on the side of the outer surface of the two sets of arc-shaped plates (71) close to the enclosure plate (1), and a movable strip (81) is hinged on the outer surface of the enclosure plate (1) at the position corresponding to the movable strip (8). A movable plate (82) is provided between the corresponding movable strip (8) and movable strip (81), and the movable strip (8) and movable strip (81) are all hinged to the movable plate (82).

3. The cofferdam retaining structure for a construction passage in a water conservancy project according to claim 2, characterized in that, The upper outer surface of the movable plate (82) and the upper outer surface of the base plate (6) are provided with movable holes. A rod (83) is provided between the two sets of movable holes. The bottom end of the rod (83) is tapered, and the diameter of the cross-section of the rod (83) is smaller than the inner diameter of the movable hole. Several sets of elastic clips are provided at equal intervals from top to bottom on the outer surface of the rod (83).

4. The cofferdam retaining structure for a construction passage in a water conservancy project according to claim 3, characterized in that, The elastic clip includes several sets of support plates (84). One end of the support plate (84) is a free end, and the other end is fixedly connected to the insertion rod (83). The support plate (84) and the insertion rod (83) are an integral structure. The free end of the support plate (84) is inclined away from the insertion rod (83). Several sets of arc strips (85) are evenly arranged on the outer surface of the support plate (84), and the cross-section of the arc strips (85) is triangular.

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