Drainage flood control node type dam

Abstract

The invention discloses a drainage and flood control node type dam, and relates to the technical field of drainage and flood control dams, the drainage and flood control node type dam comprises a dam foundation, bank walls mounted on the two sides of the dam foundation and a dam body mounted on the upper surface of the dam foundation, a gate hole is formed in the middle of the dam body in a penetrating mode, and a gate groove is formed in the dam body above the gate hole; a gate is slidably connected into the gate groove, a gate opening hoisting mechanism is installed on the upper surface of the dam body, and a protective weir is installed on the upper surface of the dam foundation on the rear side of the dam body. By arranging the protective weir, silt accumulation can be prevented, gate hole blockage can be avoided, water flow is prevented from impacting the dam body, water flow is prevented from permeating into the dam body, and the service life of the flood control dam is prolonged; through the arrangement of the groove, the sewage guide seat and the sewage collection tank and the centralized impurity removal mode of the sewage collection tank, fishes and shrimps cannot be intercepted while upstream floating impurities are removed, a large-area filter screen does not need to be manually cleaned, and the impurities in the sewage collection tank can be rapidly taken out.

Description

Technical Field

[0001] The invention relates to the technical field of drainage and flood control dams, and in particular to a drainage and flood control node-type dam. Background Art

[0002] Flood control dams are a type of infrastructure used to prevent floods and damage. They are usually built of concrete, earth, stone and other materials. They have the function of resisting floods and protecting the safety of surrounding areas. Dams usually have a wide protection range. In order to facilitate the drainage of dams, gates are usually installed in a node-like manner on the dams. The construction of dams can not only effectively prevent flooding, but also regulate river water levels by controlling the flow and velocity of floods, and can reduce the impact and damage of floods on ecosystems, and protect wetlands, forests and other ecological environments on both sides of the river.

[0003] Flood control dams separate the upstream and downstream. Floating impurities carried by the upstream water flow accumulate on the water-facing surface of the dam. If they are not cleaned for a long time, it is easy to affect the water quality, emit odor and affect the transparency of the river. Existing dams mostly use filter screens to remove floating impurities in the water. When the gates are opened, the water is discharged to intercept the impurities in the water. However, this impurity removal method will not only intercept impurities, but also fish and shrimp in the upstream water flow, which is not conducive to the balance of the ecosystem in the river. In addition, fish and shrimp will rot and stink on the filter screen, which increases the burden of manual entry into the dam to clean the large-area filter screen after the gates are closed. In addition, the impact resistance of the dam has always been the most concerned issue in history. The water level on the water-facing surface of the dam is high and there is a large pressure. When the water surface fluctuates, the impact on the dam is very large. Therefore, the existing dams are designed to be narrow at the top and wide at the bottom of the trapezoid and wave-breaking boards are installed on the water-facing surface to achieve the effect of reducing the impact. However, the dam is in contact with the water flow for a long time, and it is difficult to avoid water infiltration into the interior, which still affects the service life of the dam. Summary of the invention

[0004] The object of the present invention is to provide a drainage and flood control node-type dam to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a drainage and flood prevention node-type dam, comprising a dam foundation, bank walls installed on both sides of the dam foundation, and a dam body installed on the upper surface of the dam foundation, a gate hole is opened through the middle of the dam body, a gate slot is opened inside the dam body above the gate hole, a gate is slidably connected inside the gate slot, a gate opening winch mechanism is installed on the upper surface of the dam body, a protective weir is installed on the upper surface of the dam foundation at the rear side of the dam body, a gap between the dam body and the protective weir constitutes a sewage discharge channel, a sewage guide seat is installed on the bottom surface of the sewage discharge channel, a slide groove is opened on the rear side wall of the dam body, and a pressing mechanism is installed inside the slide groove; The left and right sides of the sewage guide seat are connected to sewage collecting boxes, a water outlet is opened inside the sewage discharge channel below the sewage collecting box, a connecting rod is connected to the upper surface of the sewage collecting box, a steel wire rope is connected to the middle of the connecting rod, and the top of the steel wire rope is pulled to the upper surface of the shore wall and connected to a lifting winch mechanism.

[0006] Preferably, the front and rear side walls of the sewage guide seat are respectively connected to the dam body and the protective weir, and the upper surface of the sewage guide seat is inclined from the middle to the left and right sides to form a sewage discharge slope, and the lowest point of the sewage discharge slope is flush with the top of the sewage collecting box.

[0007] Preferably, the sewage collecting box is in the shape of a hollow grid, there are two sewage collecting boxes, and they are movably inserted in the gap between the sewage guide seat and the bank walls on both sides. The rear side of the water outlet is connected to the sewage collecting box through the grid gap on the side wall of the sewage collecting box, and the front side of the water outlet penetrates the main body of the dam.

[0008] Preferably, the lifting and hoisting mechanism includes a lifting and hoisting frame installed on the upper surface of the shore wall, a hoisting roller is rotatably connected to the inner side of the lifting and hoisting frame, a lifting and hoisting motor is installed on the front side wall of the lifting and hoisting frame, a bracket is connected to the side wall of the lifting and hoisting frame, a guide roller is rotatably connected to the bracket, the bottom of the wire rope is connected to the dirt collecting box via a connecting rod, and the top of the wire rope is wound around the outer surface of the hoisting roller.

[0009] Preferably, an expansion groove is provided inside the protective weir, a water inlet groove is provided on the side wall of the protective weir behind the expansion groove, a baffle is arranged inside the expansion groove, the upper surface of the baffle extends from above the protective weir and is connected to a floating plate, there are several floating plates and they are arranged equidistantly on the upper surface of the baffle, and a groove is provided on the upper surface of the baffle between two adjacent floating plates.

[0010] Preferably, the width of the baffle is consistent with the width of the protective weir, the top of the baffle is connected to the floating plate, and the bottom of the baffle is slidably connected to the telescopic groove.

[0011] Preferably, the pressing mechanism includes a slide plate installed inside the slide groove, a pressing plate is vertically connected to the rear side wall of the slide plate, reinforcing ribs are connected between the upper surface of the pressing plate and the slide plate, the slide plate is slidably connected to the inner wall of the slide groove, and the number of pressing plates is several, and corresponds to the position of the floating plate.

[0012] Preferably, the gate opening winch mechanism includes a gate opening winch frame installed on the upper surface of the dam body, a first rope winding roller is rotatably connected to the inner side of the gate opening winch frame, a second rope winding roller is rotatably connected to the inner side of the gate opening winch frame on one side of the first rope winding roller, a first traction rope is wound around the outer surface of the first rope winding roller, a second traction rope is wound around the outer surface of the second rope winding roller, and a gate opening winch motor is installed on the front side wall of the gate opening winch frame.

[0013] Preferably, the first traction rope passes through the gate opening winch frame and extends into the slide groove to be connected to the upper surface of the slide plate, the second traction rope passes through the gate opening winch frame and extends into the gate groove to be connected to the upper surface of the gate, the first rope winding roller is connected to the second rope winding roller, and the first traction rope and the second traction rope are wound on the first rope winding roller and the second rope winding roller in opposite directions.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. This drainage and flood control node-type dam is equipped with a protective weir. By installing a protective weir on the rear side of the dam body, on the one hand, the protective weir blocks the silt in the upstream water flow to prevent the silt from accumulating on the water-facing side of the dam and causing the gate hole to be blocked. On the other hand, the protective weir replaces the dam body to contact the upstream water flow, blocking the water flow from impacting the dam body, and preventing the water flow from penetrating into the dam body and causing the dam to burst. At the same time, the sewage guide seat connects the dam body and the protective weir, reinforces the bottom of the protective weir, maintains the impact resistance of the protective weir, and extends the service life of the flood control dam.

[0015] 2. This drainage and flood prevention node-type dam is provided with grooves, sewage guide seats and sewage collecting boxes. When the upstream water level is higher than the protective weir, the floating plate is driven to move up, and the floating plate pulls the baffle plate to move up to block the water flow. Since the groove is lower than the upper surface of the baffle plate, impurities floating on the surface of the water flow will flow from the groove over the baffle plate into the sewage discharge channel, and flow into the two sewage collecting boxes along the sewage guide slope on the upper surface of the sewage guide seat. The floating impurities are intercepted by the grid gaps on the side walls of the sewage collecting boxes, and the filtered water is discharged from the outlet to the downstream. By starting the lifting winch motor, the lifting winch motor drives the winch roller to rotate, and the winch roller drives the wire rope to wind up. The sewage collecting box is pulled up by the wire rope to remove impurities. Through the centralized impurity removal method of the sewage collecting box, while removing the upstream floating impurities, the fish and shrimp will not be intercepted, and there is no need to manually clean the large-area filter screen, and the impurities in the sewage collecting box can be quickly removed.

[0016] 3. This drainage and flood control node-type dam is provided with a pressing mechanism. When the gate is opened for drainage, the first rope winding roller rotates to drive the first traction rope to unwind, and the slide plate connected to the first traction rope descends in the slide groove and drives the pressing plate to descend. The pressing plate presses the floating plate to push the floating plate downward, and the floating plate pushes the baffle plate downward, so that the upstream water flows through the baffle plate to flow downstream. When the pressing plate is in the uppermost position, the floating plate removes impurities according to the rising upstream water level, and the pressing plate moves downward to press the floating plate to drain water, thereby realizing rapid switching between upstream drainage and upstream impurity removal states.

[0017] 4. This drainage and flood control node-type dam is provided with a gate opening winch mechanism, and the gate opening winch motor drives the first rope winding roller and the second rope winding roller to rotate. Since the first traction rope and the second traction rope are wound in opposite directions on the first rope winding roller and the second rope winding roller, the first traction rope on the first rope winding roller is unwound, and the second traction rope on the second rope winding roller is wound up. The second traction rope pulls the gate upward to open the gate, and the slide plate and the pressing plate move downward under their own gravity to press the floating plate to start upstream drainage. The gate and the pressing plate are lifted and lowered in conjunction with each other to realize the simultaneous opening of the dam main body and upstream drainage. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the rear side split structure of the present invention; Figure 3 It is a schematic diagram of the side cutaway structure of the present invention; Figure 4 It is a schematic diagram of the connection structure of the gate opening hoisting mechanism of the present invention; Figure 5 It is a front cutaway structural schematic diagram of the present invention; Figure 6 It is a schematic diagram of the structure of the pressing mechanism of the present invention; Figure 7 It is a schematic diagram of the rear structure of the protective weir of the present invention; Figure 8 For the present invention Figure 5 Enlarged schematic diagram of the structure of part A in the middle.

[0019] In the figure: 1. dam foundation; 2. bank wall; 3. dam body; 31. gate groove; 4. gate hole; 5. gate; 6. gate opening winch mechanism; 61. gate opening winch frame; 62. first rope roller; 63. second rope roller; 64. first traction rope; 65. second traction rope; 66. gate opening winch motor; 7. protective weir; 71. telescopic groove; 72. water inlet groove; 73. baffle; 74. floating plate; 75. groove; 8. sewage discharge channel; 9. sewage guide seat; 91. sewage collecting box; 92. water outlet; 93. connecting rod; 94. wire rope; 95. lifting winch mechanism; 951. lifting winch frame; 952. winch roller; 953. lifting winch motor; 954. bracket; 955. guide roller; 10. slideway; 11. pressing mechanism; 111. slide plate; 112. pressing plate; 113. reinforcing rib. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0022] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] like Figures 1 to 8 As shown, the drainage and flood prevention node-type dam of this embodiment includes a dam foundation 1, bank walls 2 installed on both sides of the dam foundation 1, and a dam body 3 installed on the upper surface of the dam foundation 1. A gate hole 4 is opened through the middle of the dam body 3, and a gate groove 31 is opened inside the dam body 3 above the gate hole 4. A gate 5 is slidably connected inside the gate groove 31. The gate 5, the gate hole 4, and the gate groove 31 are all three in number and are arranged equidistantly in the dam body 3 to realize three-gate opening drainage. A gate opening winch mechanism 6 is installed on the upper surface of the dam body 3 to pull the gate 5 The gate is moved upward to open, and at the same time, it is also used to drive the pressing plate 112 to rise and fall. A protective weir 7 is installed on the upper surface of the dam foundation 1 on the rear side of the dam body 3, which serves as a mud barrier, anti-seepage and water flow impact protection on the rear side of the dam body 3, and provides basic conditions for removing floating objects on the upstream water surface. The gap between the dam body 3 and the protective weir 7 constitutes a sewage channel 8, and a sewage guide seat 9 is installed on the bottom surface of the sewage channel 8, which is used to remove floating objects on the upstream water surface. A chute 10 is opened on the rear side wall of the dam body 3, and a pressing mechanism 11 is installed inside the chute 10; The left and right sides of the sewage guide seat 9 are connected to sewage collecting boxes 91 for collecting water and floating impurities flowing down from the upper surface of the sewage guide seat 9. A water outlet 92 is provided inside the sewage discharge channel 8 below the sewage collecting box 91 for discharging the water filtered out of the sewage collecting box 91. A connecting rod 93 is connected to the upper surface of the sewage collecting box 91, and a steel wire rope 94 is connected to the middle of the connecting rod 93. The bottom of the steel wire rope 94 is connected to the sewage collecting box 91 through the connecting rod 93, which facilitates the suspension and lifting of the sewage collecting box 91. The top of the steel wire rope 94 is pulled to the upper surface of the shore wall 2 and is connected to a lifting winch mechanism 95, which is used to reel in and unreel the steel wire rope 94, so as to facilitate pulling the sewage collecting box 91 onto the shore wall 2.

[0024] Specifically, the front and rear side walls of the sewage guide seat 9 are respectively connected to the dam body 3 and the protective weir 7. The protective weir 7 contacts the upstream water flow instead of the dam body 3 to block the water flow from impacting the dam body 3. The sewage guide seat 9 connects the dam body 3 and the protective weir 7, and reinforces the bottom of the protective weir 7 to maintain the impact resistance of the protective weir 7. The upper surface of the sewage guide seat 9 is inclined from the middle to the left and right sides to form a sewage discharge slope, which facilitates the water and impurities falling on the sewage guide seat 9 to flow along the sewage discharge slope to both sides. The lowest point of the sewage discharge slope is flush with the top of the sewage collecting box 91, so that the water flow carries impurities along the sewage guide slope on the upper surface of the sewage guide seat 9 and flows into the two sewage collecting boxes 91 for collection.

[0025] Furthermore, the sewage collecting box 91 is in the shape of a hollow grid, which is convenient for solid-liquid separation of the incoming water flow and impurities, so that the floating impurities are cut off and the filtered water flows downward into the water outlet 92. There are two sewage collecting boxes 91, and they are movably inserted in the gap between the sewage guide seat 9 and the two side walls 2, so that it is convenient to lift and clean the sewage collecting box 91 after it is full of impurities. The rear side of the water outlet 92 is connected to the sewage collecting box 91 through the grid gap on the side wall of the sewage collecting box 91, and the front side of the water outlet 92 runs through the dam body 3, which is used to guide the water filtered by the sewage collecting box 91, so that the filtered water is discharged from the water outlet 92 downstream, so as to avoid water accumulation in the sewage discharge channel 8.

[0026] Furthermore, the lifting and hoisting mechanism 95 includes a lifting and hoisting frame 951 installed on the upper surface of the quay wall 2, and a hoisting roller 952 is rotatably connected to the inner side of the lifting and hoisting frame 951. A lifting and hoisting motor 953 is installed on the front side wall of the lifting and hoisting frame 951. The shaft end of the lifting and hoisting motor 953 passes through the side wall of the lifting and hoisting frame 951 and is connected to the hoisting roller 952, so that the lifting and hoisting motor 953 is started to drive the hoisting roller 952 to rotate. The lifting and hoisting motor 953 is essentially a motor with a forward and reverse circuit. In addition, a limit assembly used by a common hoist is also installed on the hoisting roller 952, which is used for winding and unwinding the hoisting roller 952. The side wall of the lifting and hoisting frame 951 is connected to Bracket 954, bracket 954 is rotatably connected with guide roller 955, which is used for pulling and guiding wire rope 94, the bottom of wire rope 94 is connected to dirt collecting box 91 through connecting rod 93, the top of wire rope 94 is wound on the outer surface of hoisting roller 952, and wire rope 94 is driven to wind through hoisting roller 952, and dirt collecting box 91 is pulled up by wire rope 94, the staff only needs to pick up dirt collecting box 91 at a fixed position on shore wall 2, and pour out the impurities stored inside, this centralized impurity removal method of dirt collecting box 91 will not intercept fish and shrimp while removing floating impurities upstream, and there is no need to manually clean large-area filter screen, and impurities in dirt collecting box 91 can be quickly removed.

[0027] Furthermore, a telescopic groove 71 is provided inside the protective weir 7, and a water inlet groove 72 is provided on the side wall of the protective weir 7 at the rear side of the telescopic groove 71. After the floating plate 74 moves up with the water level, the floating plate 74 pulls up the baffle plate 73, and there is inevitably a gap between the baffle plate 73 and the telescopic groove 71. Therefore, a small amount of water will flow into the telescopic groove 71 for operation. In order to avoid obstruction when the subsequent baffle plate 73 moves down in the telescopic groove 71, the water in the telescopic groove 71 is discharged through the water inlet groove 72, and a baffle plate 73 is provided inside the telescopic groove 71. The upper surface of the baffle plate 73 extends from the top of the protective weir 7 and is connected to the floating plate 74. The floating plate 74 is hollow inside and can float in water, and in practice During actual use, it is necessary to maintain the buoyancy of the float 74 to lift the baffle 73. There are several floats 74 and they are equidistantly arranged on the upper surface of the baffle 73. A groove 75 is provided on the upper surface of the baffle 73 between two adjacent floats 74. The height of the groove 75 is lower than the height of the upper surface of the baffle 73. When the water level rises and the float 74 floats, the water level is at the bottom of the float 74, that is, the upper surface of the baffle 73. The setting of the groove 75 can make impurities floating on the surface of the water flow pass through the baffle 73 from the groove 75 and flow into the sewage channel 8, thereby achieving the effect of automatic impurity removal. The impurity removal only acts on the surface water flow, and the fish and shrimp under the water flow are not affected.

[0028] Furthermore, the width of the baffle 73 is consistent with the width of the protective weir 7. The top of the baffle 73 is connected to the floating plate 74, and the bottom of the baffle 73 is slidably connected to the telescopic groove 71. When the upstream water level is higher than the protective weir 7, the floating plate 74 is driven to move upward, and the floating plate 74 pulls the baffle 73 upward to block the water flow. When the baffle 73 and the floating plate 74 rise to the highest position, the upstream water level is too high and is set as the drainage water level, and the gate is started to open for drainage.

[0029] Furthermore, the pressing mechanism 11 includes a slide plate 111 installed inside the slide groove 10, the slide plate 111 is inside the slide groove 10, and the pressing plate 112 connected to the rear side of the slide plate 111 extends through the side wall of the dam body 3, so that the slide plate 111 is stuck in the slide groove 10 to slide and rise and fall, and the stability of the pressing plate 112 is maintained. The rear side wall of the slide plate 111 is vertically connected to the pressing plate 112, and a reinforcing rib 113 is connected between the upper surface of the pressing plate 112 and the slide plate 111. 2, the slide plate 111, and the reinforcing rib 113 are all made of metal. In actual application, the weight of the pressing plate 112 and the slide plate 111 must be able to press down the floating plate 74 floating on the surface. The slide plate 111 is slidably connected to the inner wall of the chute 10. There are several pressing plates 112, which correspond to the positions of the floating plates 74. When the pressing plate 112 descends, it presses the floating plate 74 and pushes the floating plate 74 downward. The floating plate 74 pushes the baffle plate 73 downward, so that the upstream water flows through the baffle plate 73 to flow downstream, and drainage is started.

[0030] Furthermore, the gate opening winch mechanism 6 includes a gate opening winch frame 61 installed on the upper surface of the dam body 3, the gate opening winch frame 61 is rotatably connected to the first rope winding roller 62, the gate opening winch frame 61 on one side of the first rope winding roller 62 is rotatably connected to the second rope winding roller 63, the first rope winding roller 62 is wound with a first traction rope 64 on the outer surface, the second rope winding roller 63 is wound with a second traction rope 65 on the outer surface, and the gate opening winch motor 66 is installed on the front side wall of the gate opening winch frame 61. The shaft end passes through the gate opening winch frame 61 and is connected to the second rope winding roller 63. The gate opening winch motor 66 is essentially a motor with a forward and reverse circuit, and the first rope winding roller 62 and the second rope winding roller 63 are also equipped with a limiting component used in a common winch, which is used for winding and unwinding the first rope winding roller 62 and the second rope winding roller 63. There are three gate opening winch mechanisms 6, corresponding to three gates 5 respectively, and the three first traction ropes 64 on the three gate opening winch mechanisms 6 are connected together to the upper surface of the slide plate 111.

[0031] Furthermore, the first traction rope 64 passes through the gate opening hoist frame 61 and extends into the slide groove 10 and is connected to the upper surface of the slide plate 111, the second traction rope 65 passes through the gate opening hoist frame 61 and extends into the gate groove 31 and is connected to the upper surface of the gate 5, the first rope winding roller 62 is connected to the second rope winding roller 63, and the first traction rope 64 and the second traction rope 65 are wound in opposite directions on the first rope winding roller 62 and the second rope winding roller 63. When the gate opening hoist motor 66 drives the first rope winding roller 62 and the second rope winding roller 63 to rotate +, the first traction rope 64 on the first rope winding roller 62 is unwound, and the second traction rope 65 on the second rope winding roller 63 is wound, and the second traction rope 65 pulls the gate 5 to move up and open the gate, and the slide plate 111 and the pressing plate 112 move downward under their own gravity to press the floating plate 74, open the upstream drainage, and realize the linkage lifting of the gate 5 and the pressing plate 112.

[0032] The method of using this embodiment is as follows: when the dam body 3 separates the upstream and downstream of the river, the silt carried by the upstream water flow accumulates on the bottom of the water facing the protective weir 7, which can effectively prevent the silt flow from blocking the gate hole 4 when the gate is opened. The protective weir 7 replaces the dam body 3 to contact the upstream water flow, blocking the water flow from impacting the dam body 3, and at the same time preventing the water flow from penetrating into the dam body 3 to cause a breach. The dam body 3 and the protective weir 7 are connected by the sewage guide seat 9, and the bottom of the protective weir 7 is reinforced to maintain the impact resistance of the protective weir 7. As the upstream water level rises, when the upstream water level exceeds the protective weir 7, the water flow contacts the floating plate 74, causing the floating plate 74 to rise with the water level due to buoyancy, and the floating plate 74 drives the baffle 73 to move upward. The plate 73 blocks the upstream water flow. Since the groove 75 is lower than the upper surface of the baffle 73, a gap is provided for the water flow, so that the water flow at the top and the impurities floating on the surface will flow from the groove 75 over the baffle 73 into the sewage discharge channel 8. The water flow drives the impurities to flow along the sewage guide slope on the upper surface of the sewage guide seat 9 to the left and right sides, and finally flow into the two sewage collecting boxes 91. The floating impurities are intercepted by the grid gaps on the side walls of the sewage collecting boxes 91, and the filtered water flow passes through the dam body 3 from the outlet 92 and is discharged downstream. When the upstream water level is between the lowest and highest points of the baffle 73, the upstream water flow is in a state of removing impurities. When the water level reaches the highest point of the baffle 73, the water level is relatively high at this time. In order to avoid excessive water storage upstream to form floods. , by turning on the gate opening winch motor 66, the gate opening winch motor 66 drives the first rope roller 62 and the second rope roller 63 to rotate. Since the winding directions of the first traction rope 64 and the second traction rope 65 on the first rope roller 62 and the second rope roller 63 are opposite, the first traction rope 64 on the first rope roller 62 is unwound, and the second traction rope 65 on the second rope roller 63 is wound up. The second traction rope 65 pulls the gate 5 upward, so that the gate 5 enters the gate slot 31, and the gate hole 4 is opened to complete the gate opening. The first traction rope 64 is lengthened, so that the slide plate 111 and the pressing plate 112 move downward under their own gravity, and the pressing plate 112 moves downward to press the floating plate 74, and pushes the floating plate 74 to move downward, and the floating plate 74 drives the baffle plate 73 to move downward, so that the baffle plate 73 3 is lower than the upstream water level. At this time, the upstream water flows through the baffle 73 to flow downstream for drainage. When the upstream water level drops to the top of the protective weir 7, the water flow is significantly reduced by the protective weir 7. The gate opening winch motor 66 is reversed, the first traction rope 64 is wound up, and the second traction rope 65 is unwound, so that the pressing plate 112 moves up, and the gate 5 falls down to close the gate; when the dirt collecting box 91 collects impurities for a long time and stores too much impurities, the lifting winch motor 953 is started, the lifting winch motor 953 drives the winch roller 952 to rotate, the winch roller 952 drives the wire rope 94 to wind up, and the dirt collecting box 91 is pulled up by the wire rope 94. The staff will take the dirt collecting box 91 up on the bank walls 2 on both sides, and pour out the internal impurities for centralized treatment.

[0033] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A drainage and flood prevention node-type dam, comprising a dam foundation (1), bank walls (2) installed on both sides of the dam foundation (1), and a dam body (3) installed on the upper surface of the dam foundation (1), characterized in that: A gate hole (4) is provided through the middle of the dam body (3); a gate slot (31) is provided inside the dam body (3) above the gate hole (4); a gate (5) is slidably connected inside the gate slot (31); a gate opening winch mechanism (6) is installed on the upper surface of the dam body (3); a protective weir (7) is installed on the upper surface of the dam foundation (1) at the rear side of the dam body (3); a gap between the dam body (3) and the protective weir (7) constitutes a sewage discharge channel (8); a sewage guide seat (9) is installed on the bottom surface of the sewage discharge channel (8); a slide groove (10) is provided on the rear side wall of the dam body (3); a pressing mechanism (11) is installed inside the slide groove (10); The left and right sides of the sewage guide seat (9) are connected to sewage collecting boxes (91); a sewage discharge channel (8) below the sewage collecting box (91) is provided with a water outlet (92); a connecting rod (93) is connected to the upper surface of the sewage collecting box (91); a steel wire rope (94) is connected to the middle of the connecting rod (93); the top of the steel wire rope (94) is pulled to the upper surface of the quay wall (2) and is connected to a lifting winch mechanism (95).

2. The drainage and flood prevention node-type dam according to claim 1 is characterized by: The front and rear side walls of the sewage guide seat (9) are respectively connected to the dam body (3) and the protective weir (7); the upper surface of the sewage guide seat (9) is inclined from the middle to the left and right sides to form a sewage discharge slope; the lowest point of the sewage discharge slope is flush with the top of the sewage collecting box (91).

3. The drainage and flood prevention node-type dam according to claim 1 is characterized by: The sewage collecting box (91) is in the shape of a hollow grid. There are two sewage collecting boxes (91) and they are movably inserted into the gap between the sewage guide seat (9) and the two side bank walls (2). The rear side of the water outlet (92) is connected to the sewage collecting box (91) through the grid gap of the side wall of the sewage collecting box (91), and the front side of the water outlet (92) penetrates the dam body (3).

4. The drainage and flood prevention node-type dam according to claim 1 is characterized in that: The lifting and hoisting mechanism (95) comprises a lifting and hoisting frame (951) mounted on the upper surface of the quay wall (2); a hoisting roller (952) is rotatably connected to the inner side of the lifting and hoisting frame (951); a lifting and hoisting motor (953) is mounted on the front side wall of the lifting and hoisting frame (951); a bracket (954) is connected to the side wall of the lifting and hoisting frame (951); a guide roller (955) is rotatably connected to the bracket (954); the bottom of the steel wire rope (94) is connected to the dirt collecting box (91) via a connecting rod (93); and the top of the steel wire rope (94) is wound around the outer surface of the hoisting roller (952).

5. The drainage and flood prevention node-type dam according to claim 1 is characterized by: A telescopic groove (71) is provided inside the protective weir (7), a water inlet groove (72) is provided on the side wall of the protective weir (7) behind the telescopic groove (71), a baffle (73) is provided inside the telescopic groove (71), an upper surface of the baffle (73) extends from above the protective weir (7) and is connected to a floating plate (74), a plurality of floating plates (74) are arranged at equal distances on the upper surface of the baffle (73), and a groove (75) is provided on the upper surface of the baffle (73) between two adjacent floating plates (74).

6. The drainage and flood prevention node-type dam according to claim 5 is characterized by: The width of the baffle plate (73) is consistent with the width of the protective weir (7); the top of the baffle plate (73) is connected to the floating plate (74); and the bottom of the baffle plate (73) is slidably connected to the telescopic groove (71).

7. The drainage and flood prevention node-type dam according to claim 5, characterized in that: The pressing mechanism (11) comprises a slide plate (111) installed inside the slide groove (10); a pressing plate (112) is vertically connected to the rear side wall of the slide plate (111); a reinforcing rib (113) is connected between the upper surface of the pressing plate (112) and the slide plate (111); the slide plate (111) is slidably connected to the inner wall of the slide groove (10); the pressing plates (112) are in a plurality and correspond to the positions of the floating plates (74).

8. The drainage and flood prevention node-type dam according to claim 7 is characterized in that: The gate opening winch mechanism (6) comprises a gate opening winch frame (61) mounted on the upper surface of the dam body (3); a first rope winding roller (62) is rotatably connected to the inner side of the gate opening winch frame (61); a second rope winding roller (63) is rotatably connected to the inner side of the gate opening winch frame (61) on one side of the first rope winding roller (62); a first traction rope (64) is wound around the outer surface of the first rope winding roller (62); a second traction rope (65) is wound around the outer surface of the second rope winding roller (63); and a gate opening winch motor (66) is mounted on the front side wall of the gate opening winch frame (61).

9. The drainage and flood prevention node-type dam according to claim 8, characterized in that: The first traction rope (64) passes through the gate opening hoist frame (61) and extends into the slide groove (10) to be connected to the upper surface of the slide plate (111); the second traction rope (65) passes through the gate opening hoist frame (61) and extends into the gate groove (31) to be connected to the upper surface of the gate (5); the first rope winding roller (62) is connected to the second rope winding roller (63); and the first traction rope (64) and the second traction rope (65) are wound around the first rope winding roller (62) and the second rope winding roller (63) in opposite directions.

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