Cofferdam scour prevention structure for river regulation
By introducing water-retaining plates, extension plates, water-passing plates, and buffer mechanisms into the cofferdam anti-scour structure, the problem of not being able to determine the water flow intensity in the existing technology has been solved, enabling real-time monitoring of water flow intensity and improving construction safety.
Patent Information
- Application Number
- CN202423149672.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2034-12-20
AI Technical Summary
Existing cofferdam structures cannot effectively assess water flow intensity, leading to a risk of sudden collapse under the impact of large water flows, which affects construction safety.
A river regulation cofferdam anti-scour structure was designed, which includes a water-blocking plate, an extension plate, a water-passing plate, a buffer mechanism, and a bottom support mechanism. The water flow intensity is judged by the rotation of the extension plate and the deformation of the spring, and the water flow velocity is slowed down by the combination of the water-blocking plate and the water-passing plate. The structure stability is improved by combining the buffer mechanism and the bottom support mechanism.
It enables real-time monitoring and timely early warning of water flow intensity, reduces the risk of cofferdams being impacted by large water flows, and improves construction safety and stability.
Smart Images
Figure CN223577148U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to cofferdam protection technical field more specifically, especially, relates to a river regulation cofferdam anti -scour structure. BACKGROUND
[0002] Cofferdam refers to the temporary enclosure structure built in the river regulation engineering, its function is to prevent water and soil into the building site, so as to drain in cofferdam, excavate foundation pit, build building. In order to protect the stability of cofferdam, cofferdam anti -scour mechanism is arranged on the outside.
[0003] Cofferdam anti -scour structure can slow down the flow rate, when the flow rate is too large, cofferdam anti -scour structure also has the risk of toppling, at this time, cofferdam is also impacted by strong current, the existing cofferdam anti -scour structure cannot judge the flow intensity, and sudden danger is prone to occur, causing loss. SUMMARY
[0004] The utility model discloses to overcome the above situation's insufficient, aims at providing a river regulation cofferdam anti -scour structure, can judge the flow intensity, and it is convenient for timely evacuation.
[0005] A river regulation cofferdam anti -scour structure, it include: fender, the fender is multiple arc board composition;Extension board, the extension board rotation is connected in the both sides of fender;Water pass board, the water pass board is located at the rear of fender;Buffer mechanism, the buffer mechanism is located at the top of water pass board, and the buffer mechanism is higher than water pass board;Bottom support mechanism, the bottom support mechanism is located at river bottom, and the fender and water pass board are located above bottom support mechanism.
[0006] Further, the convex arc surface of the fender is opposite to the flow, the inner side of the fender is recessed inward, and the side wall of the both ends of the fender is provided with a positioning plate.
[0007] Further, the extension board is a rectangular plate as a whole, the top of the extension board is provided with a sliding groove, and the side edge of the extension board is rotationally connected with the side edge of the fender through a rotating shaft.
[0008] Further, the sliding groove is slidably connected with a sliding block, the front end of the sliding block is provided with a first universal joint, the rear end of the positioning plate is provided with a second universal joint, and the first universal joint and the second universal joint are connected through a spring.
[0009] Further, a plurality of water passing holes are arranged on the surface of the water pass board, the length of the water pass board is greater than the length of the cofferdam, and the two sides of the water pass board are arranged on the inner side of the extension board.
[0010] Further, the water baffle inner side is equipped with a support rod, the water baffle front end is equipped with a connecting rod, the connecting rod penetrates the support rod, the connecting rod front end is screwed with a positioning nut, and the positioning nut is attached to the support rod.
[0011] Further, the buffer mechanism comprises a buffer plate, a front positioning rod and a rear positioning rod, the buffer plate is rotationally connected to the water baffle top front end, the front positioning rod is arranged in front of the water baffle, and the rear positioning rod is arranged at the water baffle rear end.
[0012] Further, the buffer plate top is a forwardly bent arc shape, and the spacing between the front positioning rod and the rear positioning rod is greater than the thickness of the arc plate.
[0013] Further, the bottom support mechanism comprises a support plate and four positioning cones, the positioning cone bottom penetrates the support plate, a limiting disc is arranged below the positioning cone, and the limiting disc is in contact with the support plate bottom.
[0014] Further, the front end positioning cone top penetrates the positioning plate front end, and the water baffle rear end is equipped with a positioning cylinder, and the rear end positioning cone penetrates the positioning cylinder.
[0015] Compared with the prior art, the utility model has the beneficial effects that:
[0016] ①When the water flow impacts the extension plate to make the extension plate rotate, the spring is followed to be lengthened, the spring lengthening tension is increased, the impact resistance of the extension plate is increased, if the extension plate is still impacted by the water flow to be attached to the water baffle rear end at this time, the water flow impact force is too large, and the cofferdam construction personnel should stop construction. BRIEF DESCRIPTION OF DRAWINGS
[0017] The drawings are used to provide further understanding of the utility model, and constitute a part of the specification, are used together with the embodiments of the utility model to explain the utility model, and do not constitute the limitation on the utility model.
[0018] Figure 1 It is a whole structure schematic view of a river regulation cofferdam anti-impact structure.
[0019] Figure 2 It is a schematic view of another view of a river regulation cofferdam anti-impact structure.
[0020] Figure 3 It is a schematic view of a bottom support mechanism in a river regulation cofferdam anti-impact structure.
[0021] In the figure: 1, the water baffle; 11, the positioning plate; 111, the second universal joint; 12, the support rod; 2, the extension plate; 21, the sliding groove; 22, the sliding block; 23, the first universal joint; 24, the spring; 3, the water passing plate; 31, the water passing hole; 32, the connecting rod; 33, the positioning cylinder; 4, the buffer mechanism; 41, the buffer plate; 42, the front positioning rod; 43, the rear positioning rod; 5, the bottom support mechanism; 51, the support plate; 52, the positioning cone; 521, the limiting disc. DETAILED DESCRIPTION
[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.
[0023] As shown in Figure 1 , Figure 2 , a river regulation cofferdam anti-scour structure, comprising: a water baffle 1, the water baffle 1 is composed of multiple arc-shaped plates; an extension plate 2, the extension plate 2 is rotatably connected to the two sides of the water baffle 1; a water passing plate 3, the water passing plate 3 is arranged behind the water baffle 1; a buffer mechanism 4, the buffer mechanism 4 is arranged above the water passing plate 3, and the buffer mechanism 4 is higher than the water passing plate 3; a bottom support mechanism 5, the bottom support mechanism 5 is arranged on the river bottom, and the water baffle 1 and the water passing plate 3 are arranged above the bottom support mechanism 5.
[0024] The convex arc surface of the water baffle 1 is opposite to the water flow, the inner side of the water baffle 1 is recessed inward, and the side wall of the two ends of the water baffle 1 is provided with a positioning plate 11. The water baffle 1 is higher than the normal water level of the river during construction, the construction cofferdam is arranged behind the water baffle 1, the width of the water baffle 1 is greater than the width of the construction cofferdam, the two side arcs of the water baffle 1 extend away from the construction cofferdam, the water flow with a large flow rate is forced to slow down after impacting the water baffle 1, the water is distributed to the side away from the construction cofferdam, the water flow speed and the water flow rate directly impacting the construction cofferdam are reduced, and the construction cofferdam is more stable.
[0025] The extension plate 2 cooperates with the water baffle 1 to block water, and the impact of the water flow can be judged by rotating the extension plate 2, so that it is judged whether further protection measures are needed. The extension plate 2 is a rectangular plate as a whole, the top of the extension plate 2 is provided with a sliding groove 21, the sliding groove 21 is higher than the normal water level, the side edge of the extension plate 2 is rotatably connected to the side edge of the water baffle 1 through a rotating shaft, when the water flow impacts the extension plate 2, the extension plate 2 will rotate inward, and when the side edge of the extension plate 2 coincides with the rear end surface of the water baffle 1, the extension plate 2 cannot continue to rotate inward to the water baffle 1.
[0026] The sliding block 22 is slidably connected to the sliding groove 21, and the front and rear ends of the sliding block 22 are larger than the height of the sliding groove 21, so that the sliding block 22 slides left and right on the sliding groove 21. The front end of the sliding block 22 is provided with a first universal joint 23, and the rear end of the positioning plate 11 is provided with a second universal joint 111. The first universal joint 23 and the second universal joint 111 are oppositely arranged, and the first universal joint 23 and the second universal joint 111 are connected by a spring 24. The spring 24 is used to enhance the ability of the extension plate 2 to resist water flow. When the water flow impacts the extension plate 2 and makes the extension plate 2 rotate, the spring 24 will follow and become longer. After the spring 24 becomes longer and the pulling force increases, the impact resistance of the extension plate 2 becomes larger. If the extension plate 2 is still impacted by the water flow to the rear end of the water baffle 1 at this time, the water flow impact force is too large, and the cofferdam construction personnel should stop construction. When the extension plate 2 rotates, the sliding block 22 moves along the sliding groove 21, and the first universal joint 23 and the second universal joint 111 rotate, so that the spring 24 is bent as much as possible to reduce the service life of the spring 24.
[0027] The surface of the water passing plate 3 is provided with a plurality of water passing holes 31, and the length of the water passing plate 3 is greater than the length of the cofferdam. The water passing plate 3 is arranged on the inner side of the extension plate 2. The water on the side of the water baffle 1 enters the front end of the water passing plate 3, and then passes through the water passing holes 31, so that the water flow is further slowed down. The water passing through the water passing plate 3 impacts on the cofferdam, and the water flow intensity at this time is not enough to threaten the stability of the cofferdam.
[0028] The inner side of the water baffle 1 is provided with a support rod 12, and the two ends of the support rod 12 are connected with the inner wall of the water baffle 1. The support rod 12 strengthens the strength of the water baffle 1. The front end of the water passing plate 3 is provided with a connecting rod 32, the connecting rod 32 penetrates through the support rod 12, and the front end of the connecting rod 32 is screwed with a positioning nut. The positioning nut is attached to the support rod 12. The water baffle 1 and the water passing plate 3 are connected as a whole through the support rod 12, the connecting rod 32 and the positioning nut, so that the device is more stable.
[0029] When the water level rises beyond the water baffle 1, the buffer mechanism 4 tries to slow down the flow rate of the upper water flow. The buffer mechanism 4 includes a buffer plate 41, a front positioning rod 42 and a rear positioning rod 43. The buffer plate 41 is rotatably connected to the top front end of the water passing plate 3. The front positioning rod 42 is arranged in front of the water passing plate 3, and the rear positioning rod 43 is arranged at the rear end of the water passing plate 3.
[0030] The top of the buffer plate 41 is a forwardly bent arc shape, when water hits the buffer plate 41, the water moves back along the arc shape, colliding with the opposite water flow to slow down the flow rate. The spacing between the front positioning rod 42 and the rear positioning rod 43 is greater than the thickness of the arc-shaped plate, and the buffer plate 41 rotates between the front positioning rod 42 and the rear positioning rod 43, so that the angle of the buffer plate 41 can match the flow rate and depth, when the water level is low, the arc-shaped section of the buffer plate 41 is inclined downward, so that the angle of the water flow back is increased, and the interception strength is increased, when the water level is high, the buffer plate 41 is relatively inclined upward, so that the buffer plate 41 is rotated backward, so that the interception blocking area is increased.
[0031] The bottom support mechanism 5 is used to connect with the river bottom, and is used to support the water retaining plate 1 and the water passing plate 3. Figure 3 As shown in the figure, the bottom support mechanism 5 includes a support plate 51 and four positioning cones 52, the bottom of the positioning cone 52 penetrates the support plate 51, the lower part of the positioning cone 52 is fixedly connected with a limiting disc 521, and the limiting disc 521 is in contact with the bottom of the support plate 51. In use, the bottom of the positioning cone 52 is anchored into the riverbed for positioning, and the limiting disc 521 limits the downward movement of the support plate 51, so as to avoid the support plate 51 from sinking into the riverbed.
[0032] The top of the front positioning cone 52 penetrates the front end of the positioning plate 11, and the rear end of the water passing plate 3 is provided with a positioning cylinder 33, and the rear positioning cone 52 penetrates the positioning cylinder 33. The upper part of the positioning cone 52 fixes the water passing plate 3 and the water retaining plate 1, so as to stably arrange the device in the river channel.
[0033] Finally, it should be noted that: the above only describes the preferred embodiments of the present application, and is not used to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.
Claims
1. A river channel regulation cofferdam anti-scour structure, characterized in that, include: Water baffle (1), wherein the water baffle (1) is composed of multiple arc-shaped plates; Extension plate (2), which is rotatably connected to both sides of the baffle plate (1); A water-passing plate (3) is located behind the water-blocking plate (1); A buffer mechanism (4) is located above the water-passing plate (3) and is higher than the water-passing plate (3). The bottom support mechanism (5) is located at the bottom of the river, and the water baffle (1) and the water flow plate (3) are located above the bottom support mechanism (5).
2. The river regulation cofferdam anti-scour structure according to claim 1, characterized in that: The protruding arc surface of the baffle plate (1) is opposite to the water flow, the inner side of the baffle plate (1) is recessed inward, and the side walls at both ends of the baffle plate (1) are provided with positioning plates (11).
3. The river regulation cofferdam anti-scour structure according to claim 2, characterized in that: The extension plate (2) is a rectangular plate in general. The top of the extension plate (2) is provided with a sliding groove (21). The side of the extension plate (2) is rotatably connected to the side of the baffle plate (1) through a rotating shaft.
4. The river regulation cofferdam anti-scour structure according to claim 3, characterized in that: A slider (22) is slidably connected to the slide groove (21). The front end of the slider (22) is provided with a first universal joint (23), and the rear end of the positioning plate (11) is provided with a second universal joint (111). The first universal joint (23) and the second universal joint (111) are connected by a spring (24).
5. The river regulation cofferdam anti-scour structure according to claim 4, characterized in that: The surface of the water-passing plate (3) is provided with a plurality of water-passing holes (31). The length of the water-passing plate (3) is greater than the length of the cofferdam. The two sides of the water-passing plate (3) are located on the inner side of the extension plate (2).
6. The river regulation cofferdam anti-scour structure according to claim 5, characterized in that: The water baffle (1) is provided with a support rod (12) on the inner side, and the front end of the water passage plate (3) is provided with a connecting rod (32). The connecting rod (32) passes through the support rod (12), and a positioning nut is screwed to the front end of the connecting rod (32). The positioning nut is in contact with the support rod (12).
7. The river regulation cofferdam anti-scour structure according to claim 6, characterized in that: The buffer mechanism (4) includes a buffer plate (41), a front positioning rod (42) and a rear positioning rod (43). The buffer plate (41) is rotatably connected to the top front end of the water-passing plate (3). The front positioning rod (42) is located in front of the water-passing plate (3), and the rear positioning rod (43) is located at the rear end of the water-passing plate (3).
8. The river regulation cofferdam anti-scour structure according to claim 7, characterized in that: The top of the buffer plate (41) is an arc shape that bends forward, and the distance between the front positioning rod (42) and the rear positioning rod (43) is greater than the thickness of the arc plate.
9. A river regulation cofferdam anti-scour structure according to claim 8, characterized in that: The base support mechanism (5) includes a support plate (51) and four positioning cones (52). The bottom of the positioning cones (52) penetrates the support plate (51). A limiting plate (521) is provided below the positioning cones (52), and the limiting plate (521) contacts the bottom of the support plate (51).
10. A river regulation cofferdam anti-scour structure according to claim 9, characterized in that: The top of the positioning cone (52) at the front end penetrates the front end of the positioning plate (11), and the rear end of the water-passing plate (3) is provided with a positioning cylinder (33), and the positioning cone (52) at the rear end penetrates the positioning cylinder (33).