An overflow dam with flood discharge function for water conservancy projects

Abstract

The invention discloses an overflow dam with a flood discharge function for a water conservancy project, which belongs to the technical field of water conservancy projects and comprises a dam body, wherein a flood discharge opening is provided on the outside of the dam body, a gate is slidably connected inside the flood discharge opening, the dam body is in a right-angle trapezoid and is divided into a flood discharge side and a water storage side, an inclined portion is provided on the water storage side, and the inclined direction of the inclined portion is gradually inclined toward the flood discharge opening, and the inclined angle is 30-50 degrees, so that in the process of opening the gate to release water, the driving force generated by the water flow can be directly transmitted to the thrust fan, and the driving auger is driven to rotate by the rotating thrust fan, and in the process of driving the driving auger to rotate, the inclined inclined portion and the inclined rotating driving auger can quickly drive the accumulated silt and sediment to the flood discharge port position along with the water flow, thereby reducing the silt and sediment accumulated on the side wall of the inclined portion, and reducing the phenomenon of continuous accumulation of silt and sediment.

Description

Technical Field

[0001] The invention relates to the technical field of water conservancy projects, and in particular to an overflow dam with a flood discharge function for water conservancy projects. Background Art

[0002] In the construction of water conservancy projects, facing the complex and changeable climate and terrain conditions, how to effectively manage and control water flow becomes the key. Overflow dams, as a special type of water discharge structure, are widely used in gravity dam hubs and undertake important flood discharge tasks.

[0003] In the patent entitled "An overflow dam with flood discharge function for water conservancy projects" and the patent publication number CN112030898B, it is proposed that by setting a suspension rope wound on both ends of the shaft rod, when the upstream water level is full during the flood peak, the water blocked by the overflow dam can be completely released by slowly lifting the plug plate. When the plug plate is lifted, the water flow at the bottom impacts the rotating wheel, which will cause the rope reel to start reeling, thereby providing a lift to the plug plate itself, making the lifting of the plug plate more labor-saving. At the same time, the water flapping plate and the spiral plate arranged on the outer wall of the transmission rod can be used to When in use, when the transmission rod rotates, the silt accumulated near the root of the dam body can be mobilized, and the silt can be slowly moved toward the gap so as to be discharged from the gap. However, the spiral plate for dredging the silt accumulation is arranged at the bottom of the dam body, and the power comes from the transmission box at the water outlet. Once the spiral plate is wrapped with a large amount of silt, the power of the external transmission may not be fully transmitted to the spiral plate through the pulley, resulting in the spiral plate being unable to rotate. When the spiral plate cannot rotate, the accumulated silt cannot be discharged. Therefore, an overflow dam with flood discharge function for water conservancy projects is proposed. Summary of the invention

[0004] The object of the present invention is to provide an overflow dam with flood discharge function for water conservancy projects 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: an overflow dam with a flood discharge function for a water conservancy project, comprising a dam body, a flood discharge opening is provided on the outside of the dam body, a gate is slidably connected to the inside of the flood discharge opening, the dam body is in a right-angle trapezoid and is divided into a flood discharge side and a water storage side, an inclined portion is provided on the water storage side, the inclined direction of the inclined portion is gradually inclined toward the flood discharge opening, the inclined angle is 30-50 degrees, and the inclined portion gradually inclined toward the flood discharge opening is used to accumulate accumulated silt against the inclined portion toward the flood discharge opening during the water storage process, so that the accumulated silt is quickly discharged through the flood discharge opening during the flood discharge process;

[0006] A plurality of positioning plates are fixedly connected to a side of the inclined portion away from the flood discharge side, and a transmission auger is movably connected to the outside of the plurality of positioning plates. An end of the transmission auger close to the flood discharge opening penetrates the outer wall of the positioning plate and is fixedly connected to a thrust fan, and the outer blades of the thrust fan extend into the flood discharge opening. The transmission auger is installed in an inclined manner, and the inclination angle is the same as that of the inclined portion. The inclined transmission auger is used for driving the thrust fan to rotate by the flowing water during the process of opening the gate for flood discharge, and the thrust fan drives the transmission auger to rotate. The rotation of the transmission auger will push the mud and sand accumulated at the position of the inclined portion to the flood discharge opening, thereby cleaning the mud and sand relying on the position of the inclined portion.

[0007] Preferably, there are multiple transmission augers and thrust fans, and the multiple transmission augers and thrust fans are connected to the side of the inclined portion away from the flood discharge side through multiple positioning plates. The multiple transmission augers and thrust fans are arranged vertically upward, and the ends of the multiple transmission augers away from the thrust fans penetrate the outer wall of the positioning plate and are fixedly connected with transmission gears. The multiple transmission gears are meshed with each other. The multiple transmission augers and thrust fans arranged vertically upward are used for cleaning up the accumulated mud and sand from top to bottom during the flood discharge process, when the flowing water drives the thrust fan to rotate, and the power from above is gradually transmitted to the transmission augers at the bottom through the meshing transmission between the transmission gears, so as to avoid the phenomenon that the transmission augers at the bottom are completely wrapped by mud and sand and cannot rotate.

[0008] Preferably, the multiple transmission augers and thrust fans located above the bottom are in a gradually inclined state, and the thrust fans in the inclined state are facing the bottom of the gate. The position of the transmission gears in the transmission augers and thrust fans in the gradually inclined state is higher than the thrust fans. When the gate moves upward to open the flood discharge outlet, the water flows gradually toward the position of the flood discharge outlet below, and the water flowing gradually toward the flood discharge outlet below will flow to the position of the gradually inclined thrust fans, thereby driving the thrust fans to rotate faster.

[0009] Preferably, the push-flow fan located above the bottom and in a gradually inclined state is a turbine fan. The push-flow fan of the turbine fan is used for flood discharge. The water flowing gradually downward will meet the blades of the turbine fan. The water flowing gradually downward will be guided to form a rotating flow area to form a vortex. The formation of the vortex increases the speed of the water flow, thereby increasing the kinetic energy of the water flow and accelerating the rotation speed of the transmission auger driven by the push-flow fan.

[0010] Preferably, a plurality of extended cutting parts are integrally formed on the outside of the transmission auger located above the bottom and in a gradually inclined state. The plurality of extended cutting parts are used to cut lumps in the mud and sand during the process of the transmission auger rotating and pushing the mud and sand, thereby reducing the mud and sand agglomeration phenomenon and separating and breaking up the mud and sand.

[0011] Preferably, the plurality of extended cutting portions are staggered.

[0012] Preferably, the positioning plate is a hollow strip plate, and a winding motor is fixedly connected to the side wall of the hollow inner cavity of the positioning plate, and the output shaft of the winding motor is fixedly connected to the winding roller, the outside of the positioning plate is integrally formed with a sliding groove, the inside of the sliding groove is slidably connected to a fixed seat, a support bearing is embedded in the inside of the fixed seat, the inner ring of the support bearing is fixedly connected to the outer wall of the transmission auger, and the outer ring of the support bearing is fixedly connected to the inner wall of the fixed seat, and a plurality of auxiliary rollers are rotatably connected to the side wall of the hollow inner cavity of the positioning plate, and a lifting steel cable is wound around the outside of the auxiliary roller, one end of the lifting steel cable is fixedly connected to the top of the fixed seat, and the other end of the lifting steel cable passes through the side wall of the positioning plate and is respectively wound around the side walls of the auxiliary roller and the winding roller.

[0013] Preferably, a water-permeable groove is provided inside the transmission gear, and the water-permeable groove is used to generate a driving force to assist the transmission auger in rotating when water flows through it.

[0014] Preferably, a first winding wheel is fixedly connected to the transmission auger, a cable is wound around the outside of the first winding wheel, a support frame is fixedly connected to the dam body, a plurality of positioning seats are fixedly connected to the support frame, a winding rod is rotatably connected to the inside of the positioning seat, a second winding wheel is fixedly connected to the outside of the winding rod, one end of the cable away from the first winding wheel is wound around the outside of the second winding wheel, a suspension cable is wound around the winding rod, one end of the suspension cable away from the winding rod is connected to the gate, and one end of the winding rod away from the positioning seat is connected to a driving motor.

[0015] Preferably, a plurality of auxiliary support wheels are fixedly connected to one side of the support frame close to the inclined portion, and the cables are laid on the auxiliary support wheels.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] In the present invention, silt and sediment are accumulated as a whole through the inclined inclined portion, and an inclined transmission auger and a thrust fan are also installed on the inclined surface of the inclined portion, so that in the process of opening the gate to release water, the driving force generated by the water flow can be directly transmitted to the thrust fan, and the transmission auger is driven to rotate by the rotating thrust fan. In the process of driving the transmission auger to rotate, the inclined inclined portion and the inclined rotating transmission auger can quickly drive the accumulated silt and sediment into the flood discharge port position along with the water flow, thereby reducing the silt and sediment accumulated on the side wall of the inclined portion and reducing the phenomenon of continuous accumulation of silt and sediment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of an embodiment of the present invention;

[0019] Figure 2 It is a schematic diagram of the structure of multiple transmission augers in an embodiment of the present invention;

[0020] Figure 3 It is a schematic structural diagram of the inclined state of multiple transmission augers in an embodiment of the present invention;

[0021] Figure 4 It is a schematic diagram of the structure of a thrust flow fan in a turbine fan according to an embodiment of the present invention;

[0022] Figure 5 It is a schematic structural diagram of an extended cutting portion in an embodiment of the present invention;

[0023] Figure 6 It is a schematic cross-sectional structural diagram of a positioning plate in an embodiment of the present invention;

[0024] Figure 7 Schematic diagram of the structure of the first winding wheel in an embodiment of the present invention.

[0025] In the figure: 100, dam body; 101, inclined portion; 102, positioning plate; 103, transmission auger; 104, thrust fan; 105, gate; 106, transmission gear; 107, support frame; 200, extension cutting portion; 300, sliding groove; 301, fixed seat; 302, support bearing; 303, winding motor; 304, winding roller; 305, auxiliary roller; 400, first winding wheel; 401, positioning seat; 402, winding rod; 403, driving motor; 404, second winding wheel; 405, auxiliary support wheel; 500, water-permeable groove. DETAILED DESCRIPTION

[0026] 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.

[0027] Embodiment 1: Figure 1As shown, the present application discloses an overflow dam with a flood discharge function for a water conservancy project, comprising a dam body 100, a flood discharge opening is provided on the outside of the dam body 100, a gate 105 is slidably connected to the inside of the flood discharge opening, the dam body 100 is in a right-angle trapezoid and is divided into a flood discharge side and a water storage side, an inclined portion 101 is provided on the water storage side, the inclined direction of the inclined portion 101 is gradually inclined toward the flood discharge opening, the inclined angle is 30-50 degrees, and the inclined portion 101 gradually inclined toward the flood discharge opening is used to accumulate the accumulated silt against the inclined portion 101 toward the flood discharge opening during the water storage process, so that the accumulated silt is quickly discharged through the flood discharge opening during the flood discharge process;

[0028] A plurality of positioning plates 102 are fixedly connected to the side of the inclined portion 101 away from the flood discharge side, and a transmission auger 103 is movably connected to the outside of the plurality of positioning plates 102. The end of the transmission auger 103 close to the flood discharge opening penetrates the outer wall of the positioning plate 102 and is fixedly connected to a thrust fan 104. The outer blades of the thrust fan 104 extend into the flood discharge opening. The transmission auger 103 is installed in an inclined manner, and the inclination angle is the same as that of the inclined portion 101. The inclined transmission auger 103 is used for driving the thrust fan 104 to rotate by the flowing water when the gate 105 is opened for flood discharge, and the thrust fan 104 drives the transmission auger 103 to rotate. The rotation of the transmission auger 103 will push the mud and sand accumulated at the position of the inclined portion 101 to the flood discharge opening, thereby cleaning the mud and sand relying on the position of the inclined portion 101.

[0029] Specifically, during use, the dam body 100 is used to block the water flow, and the overflow dam formed by multiple dam bodies 100 is used to store water. During the water storage process, the mud and silt in the water flow will accumulate on the water storage side. An inclined portion 101 is provided on the water storage side. The mud and silt near the flood discharge port can be accumulated in an inclined shape through the setting of the inclined portion 101. When the staff opens the gate 105, the mud and silt accumulated in an inclined shape can quickly enter the flood discharge port along the inclined angle of the inclined portion 101, thereby quickly cleaning the mud and accumulated silt at the flood discharge port. At the same time, multiple positioning plates 102 are installed on the inclined surface of the inclined portion 101, and multiple positioning plates 102 are used to The transmission auger 103 and the thrust fan 104 are installed. By installing the transmission auger 103 and the thrust fan 104, when the gate 105 is opened, the water flows out quickly from the gap between the gate 105 and the flood discharge outlet, and when the water flows out quickly, the water flows will push the thrust fan 104 to rotate continuously. When the thrust fan 104 rotates continuously, the transmission auger 103 will be driven to rotate continuously. When the transmission auger 103 rotates continuously, the transmission auger 103 can rotate and push the silt and sand accumulated on the side wall of the inclined portion 101, and push the sand far away from the flood discharge outlet to the flood discharge outlet, thereby cleaning the sand far away from the flood discharge outlet and reducing the accumulation of sand.

[0030] Furthermore, the transmission auger 103 and the thrust fan 104 are installed in an inclined manner, and the inclination angle is the same as the inclination angle of the inclined portion 101. This allows the inclined transmission auger 103 to quickly push the mud and silt to the flood discharge outlet during the silt and sand cleaning process along the inclined surface of the inclined portion 101 during rotation, so that during the flood discharge process, the mud and silt can be discharged together with the water flow as the water flow flows, further reducing the accumulation of mud and sand.

[0031] like Figure 7 As shown, a first winding wheel 400 is fixedly connected to the transmission auger 103, and a cable is wound around the outside of the first winding wheel 400. A support frame 107 is fixedly connected to the dam body 100, and a plurality of positioning seats 401 are fixedly connected to the support frame 107. A winding rod 402 is rotatably connected inside the positioning seat 401, and a second winding wheel 404 is fixedly connected to the outside of the winding rod 402. An end of the cable away from the first winding wheel 400 is wound around the outside of the second winding wheel 404, and a suspension cable is wound around the winding rod 402. An end of the suspension cable away from the winding rod 402 is connected to the gate 105, and an end of the winding rod 402 away from the positioning seat 401 is connected to a driving motor 403.

[0032] Specifically, during use, the staff drives the winding rod 402 to rotate through the driving motor 403. The winding rod 402 can reel in the external hanging cable during the rotation process. The hanging cable can pull the gate 105 during the reeling process, and pull the gate 105 upward, so as to open the flood discharge outlet blocked by the gate 105. At the same time, when the flood discharge outlet blocked by the gate 105 is opened, water flows out from the flood discharge outlet and drives the push flow fan 104 to rotate. During the rotation of the push flow fan 104, it will continue to drive the first winding wheel 400 to rotate. The rotation of the first winding wheel 400 will transmit power to the second winding wheel 404 through the wound cable. When the power is transmitted to the second winding wheel 404, it can assist the winding rod 402 to lift the gate 105. The overall crane of the gate 105 does not completely rely on the lifting of the winding rod 402. A traditional gate opening device is arranged inside it to drive the gate 105 to rise and fall.

[0033] like Figure 1-Figure 2 As shown, a plurality of auxiliary support wheels 405 are fixedly connected to one side of the support frame 107 close to the inclined portion 101 , and cables are laid on the auxiliary support wheels 405 .

[0034] Specifically, during use, the auxiliary support wheel 405 supports the cable, ensuring that the cable used to assist the rotation of the winding rod 402 does not rub against the side wall of the support frame 107 .

[0035] The technical solution in the above-mentioned embodiment of the present application has at least the following technical effects or advantages: relative to the prior art, in the present application, silt and sand are accumulated as a whole through the inclined inclined portion 101, and an inclined transmission auger 103 and a thrust fan 104 are also installed on the inclined surface of the inclined portion 101, so that in the process of opening the gate to release water, the driving force generated by the water flow can be directly transmitted to the thrust fan 104, and the transmission auger 103 is driven to rotate by the rotating thrust fan 104. In the process of driving the transmission auger 103 to rotate, the inclined inclined portion 101 and the inclined rotating transmission auger 103 can quickly drive the accumulated silt and sand into the flood discharge port position along with the water flow, thereby reducing the silt and sand accumulated on the side wall of the inclined portion 101 and reducing the phenomenon of continuous accumulation of silt and sand.

[0036] Embodiment 2: Considering that during use, the accumulated silt and sand will gradually accumulate on the side wall of the inclined portion 101 due to the flow of water, when the silt at the bottom accumulates to a certain extent, it will wrap the transmission auger 103 at the bottom. When the silt wraps the transmission auger 103, it will cause the transmission auger 103 to be unable to rotate and the silt cannot be discharged in time. In view of the above technical problems, this application proposes the following technical solutions to solve the above technical problems, specifically:

[0037] like Figure 2 As shown, there are multiple transmission augers 103 and push-flow fans 104, and the multiple transmission augers 103 and push-flow fans 104 are connected to the side of the inclined portion 101 away from the flood discharge side through multiple positioning plates 102. The multiple transmission augers 103 and push-flow fans 104 are arranged vertically upward, and one end of the multiple transmission augers 103 away from the push-flow fan 104 passes through the outer wall of the positioning plate 102 and is fixedly connected with a transmission gear 106. The multiple transmission gears 106 are meshed with each other. The multiple transmission augers 103 and push-flow fans 104 arranged vertically upward are used for cleaning up the accumulated mud and sand from top to bottom during the flood discharge process, and the meshing transmission between the transmission gears 106 gradually transmits the power from above to the transmission augers 103 at the bottom, so as to avoid the transmission augers 103 at the bottom being completely wrapped by mud and sand and unable to rotate.

[0038] Specifically, during use, the number of transmission augers 103 and push flow fans 104 is increased to multiple, and the arrangement is vertically upward. The multiple transmission augers 103 and push flow fans 104 arranged vertically upward can gradually clean up the accumulated silt and sand from top to bottom during the process of opening the gate to release water. During the accumulation of silt and sand, the silt and sand will accumulate at the bottom in large quantities due to gravity, and the amount of silt and sand will decrease as you go up. Therefore, when the multiple transmission augers 103 and push flow fans 104 are rotating, the transmission augers 103 and push flow fans 104 located at the top rotate faster, and the transmission augers 103 and push flow fans 104 with faster rotation speeds at the top rotate faster. The dynamic auger 103 and the thrust fan 104 can not only gradually push and clean the silt and sand accumulated on the top, but also gradually transmit the rotational force generated during the rotation process downward through multiple transmission gears 106. Therefore, during the rotation process of multiple transmission augers 103 and thrust fans 104, the silt is gradually cleaned from top to bottom, and the accumulated silt and sand are cleaned step by step from bottom to top. While speeding up the silt cleaning speed, the amount of silt accumulation at the bottom is reduced, and the phenomenon that the transmission auger 103 and thrust fan 104 at the bottom are wrapped by the silt accumulation at the bottom, which makes it impossible for the transmission auger 103 and thrust fan 104 at the bottom to rotate in time, is reduced.

[0039] Furthermore, a water-permeable groove 500 is provided inside the transmission gear 106 , and the water-permeable groove 500 is used to generate a driving force to assist the transmission auger 103 in rotating when water flows through the groove.

[0040] Specifically, by providing the water-permeable slot 500 , the thrust fan 104 can also pass through the water flow while rotating, and the thrust force generated by the water flow passing through can assist the transmission auger 103 to rotate.

[0041] The technical scheme in the above-mentioned embodiment of the present application has at least the following technical effects or advantages: relative to embodiment one, in the present embodiment, through the arrangement of multiple vertically upwardly arranged transmission augers 103 and thrust fans 104, not only the speed of sludge cleaning can be increased, but also the sludge can be cleaned step by step from top to bottom, reducing the cleaning pressure at the bottom during the sludge accumulation cleaning process, and during the rotation of the upper transmission auger 103, the power can be transmitted to the lower transmission auger 103 through the transmission gear 106 to assist the rotation of the lower transmission auger 103, reduce the phenomenon that the sludge is wrapped and cannot rotate due to insufficient power, further speed up the cleaning speed, and avoid the phenomenon that a large amount of sludge at the bottom accumulates and wraps the transmission auger 103, causing the transmission auger 103 to be unable to rotate and unable to clean.

[0042] Embodiment 3: Considering that during the process of opening the gate to release water, the gate 105 is pulled upward from bottom to top, during the upward pulling process, the water flow will be concentrated to flow to the gap below, and the push flow fan 104 located above is not in the same direction as the downstream direction of the water flow during the downward flow of the water flow, which results in the push flow fan 104 located above being poorly driven by the water flow. In view of the above technical problems, the present application proposes the following technical solutions to solve the above technical problems, specifically:

[0043] like Figure 3 As shown, multiple transmission augers 103 and push-flow fans 104 located above the bottom are in a gradually inclined state, and the push-flow fans 104 in the inclined state are facing the bottom of the gate 105. The position of the transmission gear 106 in the transmission augers 103 and push-flow fans 104 in the gradually inclined state is higher than the push-flow fans 104. When the gate 105 moves upward to open the flood discharge outlet, the water flows gradually toward the position of the flood discharge outlet below, and the water flowing gradually toward the flood discharge outlet below will flow to the position of the gradually inclined push-flow fans 104, thereby driving the push-flow fans 104 to rotate faster.

[0044] Specifically, during use, the multiple transmission augers 103 and push flow fans 104 located above are adjusted to a gradually downward tilted state, so that the position of the transmission gear 106 is higher than the position of the push flow fan 104, so that in the process of opening the gate to release water and flood, the push flow fan 104 is tilted to a downstream state, so that the push flow fan 104 rotates with the downward flowing water, and the tilted push flow fan 104 is continuously pushed to rotate by the downward flowing water, thereby increasing the driving force of the downward flowing water on the push flow fan 104.

[0045] like Figure 4As shown, the push-flow fan 104 located above the bottom and in a gradually inclined state is a turbine fan. The push-flow fan 104 of the turbine fan is used in the process of flood discharge. The water flowing gradually downward will meet the blades of the turbine fan. The water flowing gradually downward will be guided to form a rotating flow area to form a vortex. The formation of the vortex increases the speed of the water flow, thereby increasing the kinetic energy of the water flow and accelerating the rotation speed of the transmission auger 103 driven by the push-flow fan 104.

[0046] Specifically, during use, the push-flow fan 104 can also be set as a turbine fan. During the flood discharge process, the water flow gradually flowing downward will meet the blades of the turbine fan, and the water flow gradually flowing downward will be guided to form a rotating flow area to form a vortex. The formation of the vortex converts the kinetic energy of the water into pressure energy and kinetic energy on the turbine blades. This energy conversion drives the turbine blades to start rotating. With the continuous formation of the vortex and the continuous conversion of energy, the turbine fan is able to accelerate its rotation. During the accelerated rotation of the turbine fan, the kinetic energy can be continuously transmitted to the outside of the transmission auger 103, so that the transmission auger 103 is accelerated. The accelerated rotation of the transmission auger 103 can also transmit the kinetic energy to the transmission auger 103 and the inside of the push-flow fan 104 located below through the transmission gear 106, so that the additional power is transmitted in time.

[0047] The technical solution in the above-mentioned embodiment of the present application has at least the following technical effects or advantages: relative to embodiment 2, in the present embodiment, by tilting the multiple transmission augers 103 and the thrust fans 104 located above, the thrust fans 104 can form a downstream flow with the flowing water during the process of opening the gate to release water. In the downstream state, the water flow can transmit more power to the thrust fans 104, thereby accelerating the rotation of the thrust fans 104. At the same time, during the tilting process of the transmission auger 103, the accumulation of mud and silt on the transmission auger 103 can be reduced, thereby reducing the accumulation of mud and silt and accelerating the cleaning of mud and silt.

[0048] Embodiment 4: Considering that during the cleaning process, the accumulated silt and sand may agglomerate. When the agglomerated silt is stuck between the multiple transmission augers 103, the agglomerated silt will slow down the rotation speed of the multiple transmission augers 103. In view of the above technical problems, the present application proposes the following technical solutions to solve the above technical problems, specifically:

[0049] like Figure 5 As shown, a plurality of extended cutting parts 200 are integrally formed on the outside of the transmission auger 103 which is located above the bottom and in a gradually inclined state. The plurality of extended cutting parts 200 are used to cut lumps in the mud and sand during the process of the transmission auger 103 rotating and pushing the mud and sand, thereby reducing the phenomenon of mud and sand agglomeration and separating and breaking up the mud and sand. The plurality of extended cutting parts 200 are staggered.

[0050] Specifically, during use, when the continuously rotating transmission auger 103 encounters agglomerated sludge, the agglomerated sludge is stuck between the spiral blades, causing increased friction. The spiral blades of the stuck transmission auger 103 slow down the rotation speed of the transmission auger 103. Through the provision of multiple extended cutting parts 200, the staggered extended cutting parts 200 can cut and break up the agglomerated sludge stuck between the multiple transmission augers 103 during use, thereby reducing the phenomenon that the agglomerated sludge slows down the rotation of the transmission auger 103.

[0051] like Figure 4 - Figure 6 As shown, the positioning plate 102 is a hollow strip plate, and a winding motor 303 is fixedly connected to the side wall of the hollow inner cavity of the positioning plate 102, and the output shaft of the winding motor 303 is fixedly connected to the winding roller 304. A sliding groove 300 is integrally formed on the outside of the positioning plate 102, and a fixed seat 301 is slidably connected inside the sliding groove 300. A support bearing 302 is embedded inside the fixed seat 301, and the inner ring of the support bearing 302 is fixedly connected to the outer wall of the transmission auger 103, and the outer ring of the support bearing 302 is fixedly connected to the inner wall of the fixed seat 301. A plurality of auxiliary rollers 305 are rotatably connected to the side wall of the hollow inner cavity of the positioning plate 102, and a lifting steel cable is wound around the outside of the auxiliary roller 305, one end of the lifting steel cable is fixedly connected to the upper part of the fixed seat 301, and the other end of the lifting steel cable passes through the side wall of the positioning plate 102 and is respectively wound around the side walls of the auxiliary roller 305 and the winding roller 304.

[0052] Specifically, during use, when multiple transmission augers 103 become stuck and cannot rotate, the winding motor 303 is started to drive the winding roller 304 to rotate. The winding roller 304 will wind up the lifting steel cable during the rotation. In the process of continuously winding up the lifting steel cable, the auxiliary roller 305 can cooperate to continuously drive the fixed seat 301 and the support bearing 302 to slide inside the sliding groove 300. When the fixed seat 301 is adjusted in position inside the sliding groove 300, it can also drive the transmission augers 103 to adjust the overall position, thereby increasing the distance between the multiple transmission augers 103, thereby separating the lumps stuck between the multiple transmission augers 103.

[0053] Furthermore, the distance between the multiple transmission augers 103 can be adjusted by installing a waterproof hydraulic cylinder in the positioning plate 102 to push the fixing seat 301 to adjust the up and down positions.

[0054] The technical solution in the above-mentioned embodiment of the present application has at least the following technical effects or advantages: relative to the third embodiment, in the present embodiment, the extended cutting portion 200 integrally formed on the outside of the transmission augers 103 can be used to break up the silt and sand formed between the multiple transmission augers 103, thereby avoiding the phenomenon that the silt and sand agglomerates are stuck to the multiple transmission augers 103, reducing the problem of the transmission augers 103 rotating too slowly due to the stuck connection of the silt and sand, and at the same time, the spacing between the multiple transmission augers 103 can be adjusted to reduce the rotation stuck phenomenon caused by the stuck connection of hard objects between the multiple transmission augers 103.

[0055] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. 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. An overflow dam with flood discharge function for a water conservancy project, comprising a dam body (100), characterized in that: The dam body (100) is provided with a flood discharge opening on the outside, and a gate (105) is slidably connected to the inside of the flood discharge opening. The dam body (100) is in a right-angle trapezoidal shape and is divided into a flood discharge side and a water storage side. The water storage side is provided with an inclined portion (101). The inclined direction of the inclined portion (101) is gradually inclined toward the flood discharge opening, and the inclined angle is 30-50 degrees. The inclined portion (101) gradually inclined toward the flood discharge opening is used to accumulate accumulated silt at the flood discharge opening position by relying on the inclined portion (101) during the water storage process, so that the accumulated silt is quickly discharged through the flood discharge opening during the flood discharge process; A plurality of positioning plates (102) are fixedly connected to a side of the inclined portion (101) away from the flood discharge side, and a transmission auger (103) is movably connected to the outside of the plurality of positioning plates (102). An end of the transmission auger (103) close to the flood discharge opening penetrates the outer wall of the positioning plate (102) and is fixedly connected to a push flow fan (104). The outer blades of the push flow fan (104) extend into the flood discharge opening. The transmission auger (103) is installed in an inclined manner, and the inclination angle is the same as that of the inclined portion (101). The inclined transmission auger (103) is used for driving the push flow fan (104) to rotate when the gate (105) is opened for flood discharge. The push flow fan (104) drives the transmission auger (103) to rotate. The rotation of the transmission auger (103) pushes the sediment accumulated at the inclined portion (101) to the flood discharge opening, thereby cleaning the sediment at the inclined portion (101). The number of the transmission augers (103) and the push flow fans (104) is plural, and the plurality of the transmission augers (103) and the push flow fans (104) are all connected to a side of the inclined portion (101) away from the flood discharge side via a plurality of positioning plates (102). The plurality of transmission augers (103) and the push flow fans (104) are arranged vertically upward, and one end of the plurality of transmission augers (103) away from the push flow fans (104) passes through the outer wall of the positioning plate (102) and is fixedly connected to a transmission gear (106). The gears (106) mesh with each other, and the plurality of transmission augers (103) and thrust fans (104) arranged vertically upward are used to clean the accumulated silt from top to bottom during the flood discharge process, when the flowing water drives the thrust fans (104) to rotate, and the power from above is gradually transmitted to the transmission augers (103) at the bottom through the meshing transmission between the transmission gears (106), so as to prevent the transmission augers (103) at the bottom from being completely covered by silt and unable to rotate; The plurality of transmission augers (103) and push flow fans (104) located above the bottom are in a gradually inclined state, the push flow fans (104) in the inclined state face the bottom of the gate (105), the position of the transmission gear (106) in the transmission augers (103) and push flow fans (104) in the gradually inclined state is higher than the push flow fans (104), when the gate (105) moves upward to open the flood discharge outlet, the water gradually flows toward the flood discharge outlet below, and the water gradually flowing toward the flood discharge outlet below flows toward the gradually inclined push flow fans (104), thereby driving the push flow fans (104) to rotate faster.

2. The overflow dam with flood discharge function for water conservancy project according to claim 1, characterized in that: The thrust fan (104) located above the bottom and in a gradually inclined state is a turbine fan. The thrust fan (104) of the turbine fan is used in the process of flood discharge. The water flow gradually flowing downward will meet the blades of the turbine fan. The water flow gradually flowing downward will be guided to form a rotating flow area to form a vortex. The formation of the vortex increases the speed of the water flow, thereby increasing the kinetic energy of the water flow, and accelerating the rotation speed of the transmission auger (103) driven by the thrust fan (104).

3. The overflow dam with flood discharge function for water conservancy project according to claim 1, characterized in that: A plurality of extending cutting portions (200) are integrally formed on the outside of the transmission auger (103) located above the bottom and in a gradually inclined state. The plurality of extending cutting portions (200) are used to cut lumps in the mud and sand during the process of the transmission auger (103) rotating and pushing the mud and sand, thereby reducing the mud and sand agglomeration phenomenon and separating and breaking up the mud and sand.

4. The overflow dam with flood discharge function for water conservancy project according to claim 3, characterized in that: The plurality of extending cutting portions (200) are arranged in a staggered manner.

5. The overflow dam with flood discharge function for water conservancy project according to claim 1, characterized in that: The positioning plate (102) is in the shape of a hollow strip plate. A winding motor (303) is fixedly connected to the side wall of the hollow inner cavity of the positioning plate (102). The output shaft of the winding motor (303) is fixedly connected to the winding roller (304). The outer part of the positioning plate (102) is integrally formed with a sliding groove (300). The interior of the sliding groove (300) is slidably connected to a fixed seat (301). A support bearing (302) is embedded in the interior of the fixed seat (301). The inner ring of the support bearing (302) is rotatably connected to the transmission roller (304). The outer wall of the auger (103) is fixedly connected, the outer ring of the support bearing (302) is fixedly connected to the inner wall of the fixed seat (301), and a plurality of auxiliary rollers (305) are rotatably connected to the side wall of the hollow inner cavity of the positioning plate (102), and a lifting steel cable is wound around the outside of the auxiliary roller (305), one end of the lifting steel cable is fixedly connected to the top of the fixed seat (301), and the other end of the lifting steel cable passes through the side wall of the positioning plate (102) and is respectively wound around the side walls of the auxiliary roller (305) and the winding roller (304).

6. The overflow dam with flood discharge function for water conservancy project according to claim 1, characterized in that: A water-permeable groove (500) is provided inside the transmission gear (106), and the water-permeable groove (500) is used to generate a driving force to assist the transmission auger (103) in rotating when water flows through the groove.

7. The overflow dam with flood discharge function for water conservancy project according to claim 1, characterized in that: A first winding wheel (400) is fixedly connected to the transmission auger (103), and a cable is wound around the outside of the first winding wheel (400). A support frame (107) is fixedly connected to the dam body (100), and a plurality of positioning seats (401) are fixedly connected to the support frame (107). A winding rod (402) is rotatably connected to the inside of the positioning seat (401), and a second winding wheel (404) is fixedly connected to the outside of the winding rod (402). An end of the cable away from the first winding wheel (400) is wound around the outside of the second winding wheel (404), and a suspension cable is wound around the winding rod (402), and an end of the suspension cable away from the winding rod (402) is connected to the gate (105), and an end of the winding rod (402) away from the positioning seat (401) is connected to a driving motor (403).

8. The overflow dam with flood discharge function for water conservancy project according to claim 7, characterized in that: A plurality of auxiliary support wheels (405) are fixedly connected to one side of the support frame (107) close to the inclined portion (101), and cables are laid on the auxiliary support wheels (405).

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