A cofferdam device and cofferdam method for sluice maintenance

Abstract

The application discloses a cofferdam device and method for sluice maintenance, which comprises two L-shaped water retaining frames, the two water retaining frames are symmetrically arranged, and the two water retaining frames are connected through an extension assembly, and the extension assembly is used for adjusting the distance between the two water retaining frames; a plurality of stacked water retaining plates are arranged between the two water retaining frames, the bottom surface of the water retaining plate at the bottom is provided with a rubber sealing strip, and the rubber sealing strip is arranged between any two water retaining plates. The two water retaining frames are vertically fixed in the water channel through the extension assembly, the water retaining plate is clamped between the two water retaining frames, the water channel can be quickly blocked, the water in the water channel is isolated from the sluice, and thus the sluice can be conveniently detected and maintained, the use of the extension assembly can reduce the water permeation probability between the water retaining frame and the side wall of the water channel guide wall, and the blocking effect is enhanced. Moreover, the whole device can be removed and reused after the sluice maintenance is completed.

Description

Technical Field

[0001] This invention relates to the field of water conservancy engineering, specifically to a cofferdam device and cofferdam method for sluice gate maintenance. Background Technology

[0002] Sluice gates play a vital role in water conservancy projects, serving functions such as regulating river water levels, flood control, irrigation, and other water resource management. Regular inspection and maintenance are crucial to ensure the proper functioning of sluice gates. During sluice gate maintenance, it is typically necessary to construct cofferdams around the gate to create a relatively dry working environment, facilitating necessary maintenance work.

[0003] Currently, sluice gate maintenance cofferdams are usually constructed using concrete, steel, or other fixed materials, which may have shortcomings in some cases, such as long construction period, high cost, and poor adjustability. Summary of the Invention

[0004] To address the aforementioned shortcomings of the prior art, this invention provides a cofferdam device and cofferdam method for sluice gate maintenance that is simple to install, reusable, and highly adaptable.

[0005] To achieve the above-mentioned objectives, the technical solution adopted by this invention is as follows:

[0006] A cofferdam device for sluice gate maintenance is provided, comprising two L-shaped water-blocking frames arranged symmetrically and connected by a telescopic component for adjusting the distance between the two water-blocking frames; a plurality of stacked water-blocking plates are arranged between the two water-blocking frames, and a rubber sealing strip is provided on the bottom surface of the bottom water-blocking plate, and a rubber sealing strip is provided between any two water-blocking plates.

[0007] Furthermore, the water-blocking plate includes two barriers, and a first telescopic structure is provided between the two barriers. The first telescopic structure includes two connecting plates provided on both sides of the barriers. A first sliding strip is provided on the side of the connecting plate near the barriers, and a first sliding groove is provided on the surface of the barriers to slide with the first sliding strip.

[0008] Two barriers and two connecting plates enclose an abutment space. An abutment plate is installed within the abutment space, and both sides of the abutment plate abut against the two barriers of any water-blocking plate. The length of the abutment plate is equal to the height of several water-blocking plates stacked together.

[0009] Furthermore, the water-blocking frame includes a horizontal support section and a vertical water-blocking section, the water-blocking section being provided with a slot for cooperating with the water-blocking plate; the telescopic component includes an underwater cylinder, the two ends of which are fixedly connected to the water-blocking sections of the two water-blocking frames respectively; and guide telescopic rods are provided on both the upper and lower sides of the underwater cylinder, the two ends of which are fixedly connected to the water-blocking sections of the two water-blocking frames respectively.

[0010] Furthermore, a side sealing assembly is provided inside the card slot. The side sealing assembly includes a push plate, the side wall of which is fitted with the groove wall of the card slot, and the push plate and the card slot are slidably engaged. Several pushing cylinders are evenly distributed vertically on the side of the push plate away from the water-blocking plate, and the pushing cylinders are all horizontally arranged. A protective plate is also provided below the water-blocking part, the bottom surface of the push plate is fitted with the protective plate, and the push plate and the protective plate are slidably engaged.

[0011] Furthermore, the side sealing assembly also includes a locking structure, which includes a sealing plate. A rubber sealing strip is provided on one side of the sealing plate, and the other side of the sealing plate is slidably engaged with a push plate. The cross-section of the sealing plate along its length is U-shaped, and the push plate is located in the recess of the U-shape. A locking rod is provided at the end of the U-shape. One end of the locking rod is hinged to the sealing plate, and the other end of the locking rod is rotatably connected to the slot through a limiting shaft. The limiting shaft restricts the angle between the locking rod and the horizontal plane to be no less than -20°. When the push cylinder is in its maximum extension state, the locking rod is in a horizontal state.

[0012] The locking structure allows the active clamping of the water-retaining plate by the pushing cylinder to be converted into a passive clamping by mechanical limiting, eliminating the need for continuous work by the pushing cylinder. At the same time, the reaction force can release the underwater cylinder, so no extra energy loss is generated after the cofferdam device is installed.

[0013] Furthermore, it also includes a pressure-down auxiliary plate, with both ends of the pressure-down auxiliary plate connected to the top of the sealing plates of the two water-blocking frames respectively; and the pressure-down auxiliary plate includes two symmetrically arranged locking strips, which are connected by a connecting strip. The bottom surface of the connecting strip is provided with a second sliding strip, and the locking strip is provided with a second sliding groove that slides with the second sliding strip.

[0014] The setting of the downward pressure auxiliary plate can reduce the local pressure when the sealing plate is pressed down, making it easier for the sealing plate to move down, thereby locking the water barrier plate with the locking structure. At the same time, the downward pressure auxiliary plate can cover the contact space of the top water barrier plate, preventing rainwater or water from the ditch from splashing into the contact space.

[0015] Furthermore, a side rubber sealing strip is provided on the side of the water barrier away from the water barrier plate.

[0016] Furthermore, there are multiple telescopic components, which are evenly spaced in the vertical direction of the water barrier, and the support part of the water barrier is provided with one telescopic component.

[0017] A cofferdam method using the above-mentioned cofferdam device for sluice gate maintenance includes the following steps:

[0018] S1: The two water-blocking frames are connected by multiple telescopic components to obtain the mounting frame. The mounting frame is placed in the water channel in front of the sluice gate to be inspected, and the support part is located on the side of the water-blocking part closer to the sluice gate to be inspected.

[0019] S2: Controls the extension of multiple telescopic components so that the two water-blocking frames are respectively attached to the guide walls of the water channel on both sides through the side rubber sealing strips;

[0020] S3: Stack several water-blocking plates in sequence between two water-blocking frames, and connect all the water-blocking plates from top to bottom through the abutment space;

[0021] S4: Control all the push cylinders to extend, so that the push plate and sealing plate clamp the water baffle plate;

[0022] S5: Connect both ends of the lowering auxiliary plate to the sealing plate. At this time, push the cylinder to stop working. Use the tool to press down the lowering auxiliary plate so that the locking rod makes an angle of -20° with the horizontal plane, and complete the setting of the cofferdam device.

[0023] S6: Drain the water around the sluice gate to be inspected.

[0024] Furthermore, in step S2, when the telescopic component extends, a tool is used to control the guide telescopic rod to be perpendicular to the guide wall of the water channel.

[0025] The beneficial effects of this invention are as follows:

[0026] This invention uses a telescopic assembly to vertically fix two water-blocking frames in a water channel, and then inserts a water-blocking plate between the two frames. This allows for rapid sealing of the water channel, isolating the water in the channel from the sluice gate, thus facilitating the inspection and maintenance of the sluice gate. The use of the telescopic assembly reduces the probability of water seepage between the water-blocking frames and the sidewall of the water channel guide wall, enhancing the sealing effect. Furthermore, the entire device can be disassembled and reused after the sluice gate maintenance is completed.

[0027] By incorporating the side sealing components, this cofferdam device can be used to seal off channels of varying widths, thus enhancing its applicability. Attached Figure Description

[0028] Figure 1 This is a three-dimensional structural diagram of the cofferdam device in Example 1;

[0029] Figure 2 This is a schematic diagram of the assembly of the water-blocking plate and the water-blocking part in Example 1;

[0030] Figure 3 This is a partial assembly diagram of the water-blocking plate in Example 2;

[0031] Figure 4 This is a schematic cross-sectional view of the side sealing assembly in Example 2;

[0032] Figure 5 This is a partial three-dimensional structural diagram of the side sealing assembly when the cylinder is in its maximum extension state in Example 3;

[0033] Figure 6 This is a partial cross-sectional schematic diagram of the side sealing assembly when the cylinder is in its maximum extension state as shown in Example 3.

[0034] Figure 7 This is a partial cross-sectional schematic diagram of the side sealing assembly when the cylinder is in the retracted state, as shown in Example 3.

[0035] Figure 8 This is a partial cross-sectional schematic diagram of the side sealing assembly after the auxiliary pressing plate is pressed down in Example 3;

[0036] Figure 9 This is a schematic diagram of the pressure auxiliary plate structure in Example 3;

[0037] Figure 10 for Figure 9 Enlarged view of point A in the middle;

[0038] The components include: 1. Water barrier frame; 2. Water barrier plate; 201. Barrier plate; 202. Connecting plate; 203. First sliding bar; 204. First sliding groove; 205. Abutment plate; 3. Rubber sealing strip; 4. Support part; 5. Water barrier part; 6. Slot; 7. Underwater cylinder; 8. Guide telescopic rod; 9. Push plate; 10. Pushing cylinder; 11. Protective plate; 12. Sealing plate; 13. Locking rod; 14. Limiting pivot; 15. Downward auxiliary plate; 151. Locking strip; 152. Connecting strip; 153. Second sliding bar; 154. Second sliding groove; 16. Side rubber sealing strip. Detailed Implementation

[0039] The specific embodiments of the present invention are described below to enable those skilled in the art to understand the present invention. However, it should be understood that the present invention is not limited to the scope of the specific embodiments. For those skilled in the art, various changes are obvious as long as they are within the spirit and scope of the present invention as defined and determined by the appended claims. All inventions utilizing the concept of the present invention are protected.

[0040] Example 1

[0041] like Figures 1-2As shown, a cofferdam device for sluice gate maintenance includes an L-shaped water-blocking frame 1. There are two water-blocking frames 1, which are symmetrically arranged and connected by a telescopic component. The telescopic component is used to adjust the distance between the two water-blocking frames 1. Several stacked water-blocking plates 2 are arranged between the two water-blocking frames 1. The bottom surface of the bottom water-blocking plate 2 is provided with a rubber sealing strip 3, and a rubber sealing strip 3 is provided between any two water-blocking plates 2.

[0042] The water-blocking plate 2 includes two barrier plates 201, and a first telescopic structure is provided between the two barrier plates 201. The first telescopic structure includes two connecting plates 202 provided on both sides of the barrier plate 201. A first sliding strip 203 is provided on the side of the connecting plate 202 near the barrier plate 201, and a first sliding groove 204 is provided on the surface of the barrier plate 201 to slide in cooperation with the first sliding strip 203.

[0043] Two baffles 201 and two connecting plates 202 enclose an abutment space. An abutment plate 205 is provided in the abutment space, and both sides of the abutment plate 205 abut against the two baffles 201 of any water-blocking plate 2. The length of the abutment plate 205 is equal to the height of several water-blocking plates 2 stacked together.

[0044] In practice, the narrow sides of the barrier 201 are all fixed with rubber sealing strips 3 by adhesive bonding; the surface of the abutment plate 205 is covered with sealing rubber, and the sealing and water blocking are achieved by abutting with the barrier 201 and by using tools to press the abutment plate 205 down to abut with the water channel.

[0045] The water barrier 1 includes a horizontal support part 4 and a vertical water barrier part 5. The water barrier part 5 is provided with a slot 6 that connects with the water barrier plate 2. The telescopic component includes an underwater cylinder 7. The two ends of the underwater cylinder 7 are fixedly connected to the water barrier parts 5 of the two water barriers 1 respectively. Guide telescopic rods 8 are provided on both the upper and lower sides of the underwater cylinder 7. The two ends of the guide telescopic rods 8 are fixedly connected to the water barrier parts 5 of the two water barriers 1 respectively.

[0046] A side rubber sealing strip 16 is provided on the side of the water barrier 1 away from the water barrier plate 2. In practice, the side rubber sealing strip 16 is fixedly installed on the side of the water barrier 1 away from the water barrier plate 2 by bolts.

[0047] There are multiple telescopic components, which are evenly spaced in the vertical direction of the water barrier 1, and the support part 4 of the water barrier 1 is equipped with one telescopic component. In specific implementation, the underwater cylinders 7 of the multiple telescopic components are connected in series through air pipes. The air source compressor of the underwater cylinders 7 is located outside the water channel, and the air source compressor supplies air to several underwater cylinders 7 through air pipes.

[0048] The cofferdam method used in this embodiment includes the following steps:

[0049] S1: The two water-blocking frames 1 are connected by multiple telescopic components to obtain the mounting frame. The mounting frame is placed in the water channel in front of the sluice gate to be inspected, and the support part 4 is located on the side of the water-blocking part 5 close to the sluice gate to be inspected.

[0050] S2: Control the extension of multiple telescopic components so that the two water-blocking frames 1 are respectively attached to the guide walls of the water channel on both sides through the side rubber sealing strips 16; when the telescopic components extend, the guide telescopic rod 8 is controlled by hand using a hooked steel rod to keep it perpendicular to the guide wall of the water channel. This prevents the telescopic components from continuing to extend when they are not perpendicular to the guide wall of the water channel, which could cause irreversible damage to the connection between the water-blocking frame 1 and the telescopic components.

[0051] S3: Stack several water-blocking plates 2 in sequence between two water-blocking frames 1, and connect all the water-blocking plates 2 in series from top to bottom through the abutment space with the abutment plate 205 to complete the setting of the cofferdam device;

[0052] S4: Pump away the water around the sluice gate to be inspected. In practice, algae and other substances that affect the sealing effect may be attached to the inner wall of the canal. Although the above-mentioned cofferdam device is equipped with rubber sealing plates 12, the impact of water will cause the algae and other substances between the rubber sealing plates 12 and the inner wall of the canal to detach, resulting in gaps. Sandbags can be used to seal the gaps.

[0053] Example 2

[0054] like Figures 3-4 As shown, the difference between this embodiment and Embodiment 1 is that: a side sealing assembly is provided in the slot 6, which includes a push plate 9. The side wall of the push plate 9 is in contact with the groove wall of the slot 6, and the push plate 9 and the slot 6 are in sliding engagement; several pushing cylinders 10 are evenly distributed vertically on the side of the push plate 9 away from the water-blocking plate 2, and the several pushing cylinders 10 are all horizontally arranged; a protective plate 11 is also provided below the water-blocking part 5, and the bottom surface of the push plate 9 is in contact with the protective plate 11, and the push plate 9 and the protective plate 11 are in sliding engagement. The protective plate 11 is provided to prevent water from entering the slot 6 from below and corroding the pushing cylinders 10. In specific implementation, rubber sealing strips 3 are glued and fixed to the bottom surface of the protective plate 11 and the water-blocking part 5; the several pushing cylinders 10 are connected in series through air pipes, and the air source compressor of the pushing cylinders 10 is located outside the water channel. The air source compressor supplies air to the several pushing cylinders 10 through the air pipes.

[0055] The cofferdam method used in this embodiment includes the following steps:

[0056] S1: The two water-blocking frames 1 are connected by multiple telescopic components to obtain the mounting frame. The mounting frame is placed in the water channel in front of the sluice gate to be inspected, and the support part 4 is located on the side of the water-blocking part 5 close to the sluice gate to be inspected.

[0057] S2: Control the extension of multiple telescopic components so that the two water-blocking frames 1 are respectively attached to the guide walls of the water channel on both sides through the side rubber sealing strips 16; when the telescopic components extend, the guide telescopic rod 8 is controlled by hand using a hooked steel rod to keep it perpendicular to the guide wall of the water channel. This prevents the telescopic components from continuing to extend when they are not perpendicular to the guide wall of the water channel, which could cause irreversible damage to the connection between the water-blocking frame 1 and the telescopic components.

[0058] S3: Stack several water-blocking plates 2 in sequence between two water-blocking frames 1, and connect all the water-blocking plates 205 from top to bottom through the abutment space;

[0059] S4: Control all the pushing cylinders 10 to extend, so that the push plate 9 and the sealing plate 12 clamp the water-blocking plate 2. At the same time, the barrier plate 201 of each water-blocking plate 2 clamps the abutment plate 205, so that there will be no gaps in the water-blocking plate 2, and the cofferdam device is set up.

[0060] S5: Pump away the water around the sluice gate to be inspected. In practice, algae and other substances that affect the sealing effect may be attached to the inner wall of the water channel. Although the above-mentioned cofferdam device is equipped with rubber sealing plate 12, the impact of water will cause the algae and other substances between the rubber sealing plate 12 and the inner wall of the water channel to detach, resulting in gaps. Sandbags can be used to seal the gaps.

[0061] Example 3

[0062] like Figures 5-10 As shown, the difference between this embodiment and embodiment 2 is that the side sealing assembly also includes a locking structure. The locking structure includes a sealing plate 12, a rubber sealing strip 3 is provided on one side of the sealing plate 12, and the other side of the sealing plate 12 is slidably engaged with the push plate 9. The cross-section of the sealing plate 12 in the length direction is U-shaped, the push plate 9 is located in the recess of the U-shape, and a locking rod 13 is provided at the end of the U-shape. One end of the locking rod 13 is hinged to the sealing plate 12, and the other end of the locking rod 13 is rotatably connected to the slot 6 through a limiting shaft 14. The limiting shaft 14 limits the angle between the locking rod 13 and the horizontal plane to not less than -20°. When the pushing cylinder 10 is in the maximum extension state, the locking rod 13 is in a horizontal state.

[0063] It also includes a pressure-down auxiliary plate 15, with both ends of the pressure-down auxiliary plate 15 connected to the tops of the sealing plates 12 of the two water-blocking frames 1 by bolts; and the pressure-down auxiliary plate 15 includes two symmetrically arranged retaining strips 151, which are connected by a connecting strip 152. The bottom surface of the connecting strip 152 is provided with a second sliding strip 153, and the retaining strip 151 is provided with a second sliding groove 154 that slides and engages with the second sliding strip 153. In specific implementation, the connecting strip 152 is provided with screw holes. After the water-blocking plate 2 is pressed down and tightened by using the pressure-down auxiliary plate 15, the bolts are screwed into the screw holes. The bolts abut against the retaining strips 151, locking the retaining strips 151 and the connecting strip 152, preventing the sealing plate 12 from accidentally moving upward and causing gaps between the sealing plates 12 on both sides and the water-blocking plate 2.

[0064] The cofferdam method used in this embodiment includes the following steps:

[0065] S1: The two water-blocking frames 1 are connected by multiple telescopic components to obtain the mounting frame. The mounting frame is placed in the water channel in front of the sluice gate to be inspected, and the support part 4 is located on the side of the water-blocking part 5 close to the sluice gate to be inspected.

[0066] S2: Control the extension of multiple telescopic components so that the two water-blocking frames 1 are respectively attached to the guide walls of the water channel on both sides through the side rubber sealing strips 16; when the telescopic components are extended, use tools to control the guide telescopic rod 8 to be perpendicular to the guide wall of the water channel.

[0067] S3: Stack several water-blocking plates 2 in sequence between two water-blocking frames 1, and connect all the water-blocking plates 205 from top to bottom through the abutment space;

[0068] S4: Control all push cylinders 10 to extend, so that push plate 9 and sealing plate 12 clamp water baffle 2;

[0069] S5: Connect both ends of the lowering auxiliary plate 15 to the sealing plate 12. At this time, the pushing cylinder 10 stops working. Use a heavy object or manpower to press down the lowering auxiliary plate 15 so that the locking rod 13 makes an angle of -20° with the horizontal plane. When pressing down, because the pushing cylinder 10 stops working, the pushing cylinder 10 partially retracts. Under the premise that the water-blocking plate 2 or the sealing plate 12 is not subjected to an upward force, the rebound force of the rubber sealing strip 3 will make the sealing plate 12 continue to work to both sides. With the help of the limiting rotating shaft 14, the sealing plate 12 and the water-blocking plate 2 are kept tightly sealed, thereby preventing water seepage and completing the setting of the cofferdam device.

[0070] S6: Drain the water around the sluice gate to be inspected.

Claims

1. A cofferdam device for sluice gate maintenance, characterized in that, The system includes two L-shaped water-blocking frames arranged symmetrically and connected by a telescopic component for adjusting the distance between them. Several stacked water-blocking plates are arranged between the two water-blocking frames, with a rubber sealing strip on the bottom surface of the bottommost water-blocking plate, and a rubber sealing strip between any two water-blocking plates. The water-blocking plate includes two plates, and a first telescopic structure is provided between the two plates. The first telescopic structure includes two connecting plates provided on both sides of the plates. A first sliding strip is provided on the side of the connecting plate near the plates, and a first sliding groove is provided on the surface of the plates to slide with the first sliding strip. The two baffles and two connecting plates enclose an abutment space. An abutment plate is provided in the abutment space, and both sides of the abutment plate abut against the two baffles of any water-blocking plate. The length of the abutment plate is equal to the height of several water-blocking plates stacked together. The water-blocking frame includes a horizontal support part and a vertical water-blocking part. The water-blocking part is provided with a slot for cooperating with the water-blocking plate. The telescopic component includes an underwater cylinder. The two ends of the underwater cylinder are respectively fixedly connected to the water-blocking parts of the two water-blocking frames. Guide telescopic rods are provided on both the upper and lower sides of the underwater cylinder. The two ends of the guide telescopic rods are respectively fixedly connected to the water-blocking parts of the two water-blocking frames. A side sealing assembly is provided in the slot, the side sealing assembly includes a push plate, the side wall of the push plate is in contact with the groove wall of the slot, and the push plate and the slot are slidably engaged; a plurality of pushing cylinders are vertically and evenly distributed on the side of the push plate away from the water-blocking plate, and the plurality of pushing cylinders are all horizontally arranged; a protective plate is also provided below the water-blocking part, the bottom surface of the push plate is in contact with the protective plate, and the push plate and the protective plate are slidably engaged; The side sealing assembly also includes a locking structure, which includes a sealing plate. A rubber sealing strip is provided on one side of the sealing plate, and the other side of the sealing plate is slidably engaged with a push plate. The cross-section of the sealing plate along its length is U-shaped, and the push plate is located in the recess of the U-shape. A locking rod is provided at the end of the U-shape. One end of the locking rod is hinged to the sealing plate, and the other end of the locking rod is rotatably connected to the slot through a limiting shaft. The limiting shaft limits the angle between the locking rod and the horizontal plane to not less than -20°. When the pushing cylinder is in its maximum extension state, the locking rod is in a horizontal state. It also includes a pressure-down auxiliary plate, the two ends of which are respectively connected to the top of the sealing plates of the two water-blocking frames; and the pressure-down auxiliary plate includes two symmetrically arranged locking strips, the two locking strips are connected by a connecting strip, the bottom surface of the connecting strip is provided with a second sliding strip, and the locking strip is provided with a second sliding groove that slides with the second sliding strip.

2. The cofferdam device for sluice gate maintenance according to claim 1, characterized in that, The water barrier is provided with a side rubber sealing strip on the side away from the water barrier plate.

3. The cofferdam device for sluice gate maintenance according to claim 1, characterized in that, There are multiple telescopic components, which are evenly spaced in the vertical direction of the water barrier, and the support part of the water barrier is provided with one telescopic component.

4. A cofferdam method using the cofferdam device for sluice gate maintenance as described in any one of claims 1-3, characterized in that, Includes the following steps: S1: The two water-blocking frames are connected by multiple telescopic components to obtain the mounting frame. The mounting frame is placed in the water channel in front of the sluice gate to be inspected, and the support part is located on the side of the water-blocking part closer to the sluice gate to be inspected. S2: Controls the extension of multiple telescopic components so that the two water-blocking frames are respectively attached to the guide walls of the water channel on both sides through the side rubber sealing strips; S3: Stack several water-blocking plates in sequence between two water-blocking frames, and connect all the water-blocking plates from top to bottom through the abutment space; S4: Control all the push cylinders to extend, so that the push plate and sealing plate clamp the water baffle plate; S5: Connect both ends of the lowering auxiliary plate to the sealing plate. At this time, push the cylinder to stop working. Use the tool to press down the lowering auxiliary plate so that the locking rod makes an angle of -20° with the horizontal plane, and complete the setting of the cofferdam device. S6: Drain the water around the sluice gate to be inspected.

5. The cofferdam method according to claim 4, characterized in that, In step S2, when the telescopic component extends, a tool is used to control the guide telescopic rod to be perpendicular to the guide wall of the water channel.

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