Water stop device for hydropower station construction

Abstract

The invention relates to the technical field of hydropower and water conservancy equipment, in particular to a water stop device for hydropower station construction, which comprises a water stop middle plate, water stop guide grooves are formed in the left part and the right part of the water stop middle plate in a penetrating manner, and two water stop inclined plates which are distributed left and right are slidably mounted in the water stop guide grooves. Two vortex springs in the sand brushing part accumulate force to generate resilience force during the period of the two water stop deflected plates, and after the two water stop deflected plates are unfolded, the release part is triggered, so that the two vortex springs in the force accumulation state rebound, two I-shaped wheels are driven to rotate, a left soft rope and a right soft rope are wound, a lifting block is subjected to the winding pulling force effect of the soft ropes, and the sand brushing part is used for brushing sand on the water stop deflected plates. The flexible sliding strip is driven to slide upwards to the interior of the transverse section area of the right-angle guide groove, the flexible sliding strip slides to drive the sand wiping scraping piece to move, the sand wiping scraping piece moves to wipe away gravel on the side wall of the water conservancy construction ditch, the outer side face of the water stop inclined plate can be tightly attached to the side wall of the water conservancy construction ditch, and the water stop effect of the device is improved.

Description

Technical Field

[0001] The invention relates to the technical field of hydropower and water conservancy equipment, and in particular to a water stopping device for construction of a hydropower station. Background Art

[0002] In the process of constructing the hydropower station ditch, in order to facilitate construction, it is usually necessary to isolate the constructed hydropower station ditch, which is a device used to prevent water from flowing through a specific waterproof area;

[0003] According to the Chinese patent authorization announcement number: CN117947747B, a water-stopping device for water conservancy project construction is disclosed. By installing an anti-seepage rubber pad at the bottom of the lifting block, it is ensured that there will be no gap at the bottom of the long water-stop strip when it is connected, which helps to improve safety during work. Nevertheless, the existing water-stopping device for water conservancy project construction still has shortcomings when used. The device achieves the purpose of water stopping by having the long water-stop strip contact the side wall of the water conservancy construction ditch after stretching. However, during the construction process, some mud and sand in the mortar will inevitably contaminate the side wall of the ditch, resulting in the above-mentioned long water-stop strip in the process of contacting the side wall of the ditch. The long water-stop strip will interfere with the sand particles, that is, the sand particles are blocked between the long water-stop strip and the side wall of the ditch, resulting in the long water-stop strip being unable to fit tightly against the side wall of the ditch, and gaps are easily present, which greatly reduces the water-stopping effect. Summary of the invention

[0004] To this end, the present invention provides a water-stopping device for hydropower station construction to solve the above-mentioned problems.

[0005] The present invention provides the following technical solution: a water-stop device for construction of a hydropower station, comprising a water-stop middle plate, the left and right parts of which are penetrated by water-stop guide grooves, two water-stop deflectors distributed on the left and right are slidably installed inside the water-stop guide grooves, the side faces of the two water-stop deflectors away from each other are each provided with a side groove, the upper part of the side faces of the two water-stop deflectors away from each other is provided with a traction groove, the traction groove is located at the top of the side groove, and the traction groove is connected with the inner wall of the side groove, and the side groove and the front wall and the rear wall of the traction groove are each provided with a right-angle guide groove;

[0006] Sand-sweeping components are provided for sliding inside the side grooves and the traction grooves, and are used to sweep away sand particles on the inner wall of the ditch during water conservancy construction;

[0007] A release component is provided inside the water-stop middle plate, and the release component is used for resetting the sand-brushing component.

[0008] As a preferred embodiment of the present invention, the sand-scraping member includes a flexible sliding strip, which is slidably installed inside two right-angle guide grooves at the front and back, and the sand-scraping blade extends into the traction groove. A sand-scraping blade is fixedly installed on one side of the flexible sliding strip away from the water-stop offset plate. A lifting block is fixedly installed at the top of one end of the flexible sliding strip located in the traction groove, and a soft rope is fixedly installed on the inner side of the lifting block.

[0009] As a preferred embodiment of the present invention, a winding groove is formed inside the water-stop middle plate. The winding groove is located at the top of the water-stop guide groove. Two winding shafts distributed left and right are rotatably installed between the front wall and the rear wall of the winding groove. Shaped wheels are fixedly installed on the outer walls of the two winding shafts. The soft rope movably penetrates the bottom wall of the water-stop guide groove and extends into the winding groove, and one end of the soft rope away from the lifting block is wound around the periphery of the shaped wheel. Coil springs are fixedly installed at the front ends of the outer walls of the winding shafts. Two limiting torsion hoops distributed left and right are fixedly installed on the front wall of the winding groove. One ends of the two coil springs away from the winding shafts are respectively fixedly connected to the inner walls of the two limiting torsion hoops.

[0010] As a preferred embodiment of the present invention, toothed rings are fixedly installed on the outer walls of the two shaped wheels, and the two toothed rings are meshed with each other. A worm gear is fixedly installed at the rear end of the outer wall of one of the winding shafts. A worm is meshed with the periphery of the worm gear. The worm is located between the two winding shafts on the left and right. A vertical shaft is fixedly installed inside the worm. A one-way clutch is fixedly installed on the upper part of the outer wall of the vertical shaft, and a driven gear is fixedly installed on the outer wall of the one-way clutch.

[0011] As a preferred embodiment of the present invention, a bearing hole is formed at the top of the water-stop middle plate. The bearing hole penetrates the winding groove and extends into the water-stop guide groove. A threaded rod is rotatably installed inside the bearing hole. The threaded rod is located in front of the vertical shaft. A handle is fixedly installed at the top of the threaded rod. A driving gear is fixedly installed on the outer wall of the threaded rod. The driving gear is meshed with the driven gear. An internally threaded moving block is threadedly connected to the outer wall of the threaded rod. A hinge seat is fixedly installed at the bottom of the internally threaded moving block. Two ejector rods distributed left and right are hinged at the bottom of the hinge seat. One ends of the two ejector rods away from the hinge seat are respectively hinged to the lower parts of the opposite surfaces of the two water-stop offset plates on the left and right. Vertical grooves are formed on both the front wall and the rear wall of the water-stop guide groove. The internally threaded moving block is slidably installed inside the two vertical grooves.

[0012] As a preferred embodiment of the present invention, the release member includes a slider. A path groove is formed at the top of the water stop middle plate, and the bottom of the path groove communicates with the top of the winding groove. The vertical shaft is rotatably installed inside the slider through a bearing, and the vertical shaft penetrates through the bottom and top of the slider. The slider is slidably installed between the left and right inner walls of the path groove, and a push spring is fixedly installed between the front of the slider and the front wall of the path groove.

[0013] As a preferred embodiment of the present invention, a force-bearing arm is fixedly installed at the front end of the top of the slider. Force pins are fixedly installed at both ends of the top of the force-bearing arm. Two left-right distributed guiding sliders are fixedly installed at the left end and the right end of the top of the water stop middle plate respectively. Two front-back distributed sliding rods are slidably penetrated through the inside of the two guiding sliders. A dial is fixedly installed at the end of the two sliding rods away from the path groove. A top groove is formed at the top of the water stop offset plate, and the dial extends into the inside of the top groove. A wedge block is fixedly installed at the end of the two sliding rods away from the dial. A return spring is sleeved around the outer periphery of each sliding rod, and the return spring is fixedly installed between the wedge block and one of the guiding sliders. The outer walls of the two force pins are respectively abutted against the wedge surfaces of the two wedge blocks.

[0014] As a preferred embodiment of the present invention, through holes for ropes are formed at the upper parts of the sides of the two water stop offset plates close to each other. The through holes for ropes communicate with the traction grooves. The soft rope movably penetrates through the through holes for ropes, and the aperture of the through holes for ropes is larger than the outer diameter of the soft rope.

[0015] As a preferred embodiment of the present invention, an internal thread hole is formed at the bottom wall of the top groove away from the through hole for ropes, and the internal thread hole extends into the inside of the right-angle guide groove. A limit bolt is threadedly connected inside the internal thread hole, and the bottom of the limit bolt abuts against the top of the lifting block.

[0016] As a preferred embodiment of the present invention, storage grooves are formed on the front and back of the water stop offset plate respectively. A support swing bar is rotatably installed inside the storage grooves. An expansion hole is formed at the bottom of the support swing bar. An adjusting rod is slidably installed inside the expansion hole at the bottom of the support swing bar. A support footrest is fixedly installed at the bottom of the adjusting rod. A fastening screw hole is formed through the lower part of the outer side of the fastening screw hole, and a fastening bolt is threadedly screwed inside the fastening screw hole. The end of the fastening bolt abuts against the outer wall of the adjusting rod. An adsorption magnet is fixedly installed inside the magnet fixing groove formed at the lower part of the inner wall of the storage groove away from its opening.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. In the present invention, two torsion springs in the sand-brushing component store energy during the period between the two water-stop offset plates to generate resilience. After the two water-stop offset plates are unfolded, the release component is triggered, causing the two torsion springs in the energy storage state to rebound, driving the rotation of the two I-shaped wheels, winding the left and right soft ropes, and the lifting block moves in the direction close to the I-shaped wheel under the action of the winding pulling force of the soft ropes. As a result, the flexible slide bar slides upward into the horizontal section area of the right-angle guide groove. The sliding of the flexible slide bar drives the sand-brushing blade to move, and the sand-brushing blade moves to brush away the gravel on the side wall of the water conservancy construction ditch. Since the sand-brushing blade brushes away the gravel attached to the side wall of the water conservancy construction ditch, the outer side of the water-stop offset plate can be closely attached to the side wall of the water conservancy construction ditch, improving the water-stop effect of the device.

[0019] 2. In the present invention, when the two water-stop offset plates move towards the middle, the triggering action on the release component is released. The slider moves forward to drive the vertical shaft and the worm to move, making the worm gear mesh with the worm again. At the same time, the threaded rod also drives the driving gear to reverse. The driving gear drives the driven gear meshing with it to reverse. Due to the one-way meshing drive characteristic of the one-way clutch, the driven gear cannot transmit the torque to the vertical shaft through the one-way clutch after reversing. Therefore, the reverse rotation of the driven gear will not cause the vertical shaft and the worm to rotate. Therefore, the worm gear is in a static state, and the two winding shafts and the I-shaped wheels do not rotate, so that the soft ropes wound around the periphery of the I-shaped wheels will not be released, which can avoid the soft ropes from being knotted and entangled, ensuring the smooth use of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural diagram of the present invention;

[0021] Figure 2 is a front half-sectional structural diagram of the water-stop middle plate in the present invention;

[0022] Figure 3 is a front half-sectional structural diagram of the water-stop middle plate and the water-stop offset plate in the present invention;

[0023] Figure 4 In the present invention Figure 3 is an enlarged structural diagram of part A;

[0024] Figure 5 is a front sectional structural diagram of the water-stop offset plate in the present invention;

[0025] Figure 6 is a detailed enlarged structural diagram of the I-shaped wheel and the torsion spring in the present invention;

[0026] Figure 7 is a structural diagram of the worm and the worm gear in the present invention;

[0027] Figure 8 is a detailed enlarged structural diagram of the winding groove in the present invention;

[0028] Figure 9 For the present invention Figure 8 A schematic diagram of the enlarged structure of part B;

[0029] Figure 10 It is a schematic diagram of the unfolded structure of the support swing bar in the present invention;

[0030] Figure 11 For the present invention Figure 10 Schematic diagram of the enlarged structure of part C.

[0031] In the figure: 1. water-stop middle plate; 101. water-stop guide groove; 102. water-stop deflector plate; 103. side groove; 104. traction groove; 105. right-angle guide groove; 106. top groove; 107. rope threading hole; 108. winding groove; 109. path groove; 1010. bearing hole; 1002. storage groove; 1003. magnetic sheet fixing groove; 1005. vertical groove; 1006. internal thread hole; 201. flexible slide; 202. sand scraper; 203. lifting block; 204. soft rope; 205. winding shaft; 206. I-shaped wheel; 207. vortex spring; 208. torsion limiting hoop; 209. gear ring; 2010. worm gear; 201 1. Worm; 2012. Vertical axis; 2013. One-way clutch; 2014. Driven gear; 301. Sliding block; 302. Push-up spring; 303. Force arm; 304. Force pin; 305. Guide slide; 306. Sliding rod; 307. Paddle; 309. Wedge; 3010. Return spring; 401. Support pendulum bar; 402. Adjustment rod; 403. Support pedal; 404. Fastening screw hole; 405. Fastening bolt; 406. Adsorption magnetic sheet; 501. Threaded rod; 502. Handle; 503. Driving gear; 504. Internal threaded moving block; 505. Articulated seat; 506. Push rod; 6. Limit bolt. DETAILED DESCRIPTION

[0032] 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.

[0033] See also Figure 1 - Figure 11 The technical solution provided by the present invention specifically includes the following embodiments:

[0034] Embodiment 1. A water stop device for hydropower station construction, including a water stop middle plate 1. Water stop guide grooves 101 are penetrated and opened in the left and right parts of the water stop middle plate 1. Two water stop offset plates 102 distributed left and right are slidably installed inside the water stop guide grooves 101. Side grooves 103 are opened on the side surfaces of the two water stop offset plates 102 away from each other. Traction grooves 104 are opened on the upper parts of the side surfaces of the two water stop offset plates 102 away from each other. The traction grooves 104 are located at the top of the side grooves 103, and the traction grooves 104 communicate with the inner walls of the side grooves 103. Right-angle guide grooves 105 are opened on the front and rear walls of the side grooves 103 and the traction grooves 104;

[0035] A bearing hole 1010 is opened at the top of the water stop middle plate 1. The bearing hole 1010 penetrates through the winding groove 108 and extends into the inside of the water stop guide groove 101. A threaded rod 501 is rotatably installed inside the bearing hole 1010. The threaded rod 501 is located in front of the vertical shaft 2012. A handle 502 is fixedly installed at the top of the threaded rod 501. An internally threaded moving block 504 is threadedly connected to the outer wall of the threaded rod 501. A hinge seat 505 is fixedly installed at the bottom of the internally threaded moving block 504. Two top rods 506 distributed left and right are hinged at the bottom of the hinge seat 505. The ends of the two top rods 506 away from the hinge seat 505 are respectively hinged to the lower parts of the opposite surfaces of the left and right water stop offset plates 102. Vertical grooves 1005 are opened on the front and rear walls of the water stop guide groove 101. The internally threaded moving block 504 is slidably installed inside the two vertical grooves 1005;

[0036] Specifically in this embodiment, the water stop middle plate 1 is placed in the water conservancy construction ditch. By manually rotating the handle 502 to drive the threaded rod 501 to rotate, the threaded rod 501 generates a threaded thrust, pushing the internally threaded moving block 504 downward along the two vertical grooves 1005. The downward movement of the internally threaded moving block 504 drives the hinge seat 505 to move downward together, exerting a downward thrust on the tops of the two top rods 506. Immediately afterwards, the two top rods 506 push the two water stop offset plates 102 outwards along the inner walls of the water stop guide grooves 101 towards the outside of the water stop guide grooves 101, causing the two water stop offset plates 102 to move away from each other and gradually approach the side walls of the water conservancy construction ditch. During the movement of the two water stop offset plates 102 away from each other, they also drive the two flexible slide bars 201 and the two sand-scraping blades 202 to move. Until the left and right water stop offset plates 102 contact the inner walls of both sides of the water conservancy construction ditch, stop rotating the handle 502 to achieve the water stop effect on the water conservancy construction ditch, facilitating construction.

[0037] Embodiment 2. A sand-scraping component is slidably provided inside the side grooves 103 and the traction grooves 104. The sand-scraping component is used to scrape off the sand grains on the inner wall of the water conservancy construction ditch;

[0038] The sand-brushing component includes a flexible slide bar 201. The flexible slide bar 201 is slidably installed inside two right-angle guide grooves 105 at the front and back, and the sand-brushing blade 202 extends into the traction groove 104. A sand-brushing blade 202 is fixedly installed on one side surface of the flexible slide bar 201 away from the water-stop offset plate 102. A lifting block 203 is fixedly installed at the top of one end of the flexible slide bar 201 located in the traction groove 104. A soft rope 204 is fixedly installed on the inner side surface of the lifting block 203;

[0039] A winding groove 108 is formed inside the water-stop middle plate 1. The winding groove 108 is located at the top of the water-stop guide groove 101. Two winding shafts 205 distributed left and right are rotatably installed between the front wall and the rear wall of the winding groove 108. Shaped wheels 206 are fixedly installed on the outer walls of the two winding shafts 205. The soft rope 204 movably penetrates through the bottom wall of the water-stop guide groove 101 and extends into the winding groove 108. One end of the soft rope 204 away from the lifting block 203 is wound around the periphery of the shaped wheel 206. Torsion springs 207 are fixedly installed at the front ends of the outer walls of the winding shafts 205. Two limit torsion hoops 208 distributed left and right are fixedly installed on the front wall of the winding groove 108. One ends of the two torsion springs 207 away from the winding shafts 205 are respectively fixedly connected to the inner walls of the two limit torsion hoops 208;

[0040] Toothed rings 209 are fixedly installed on the outer walls of the two shaped wheels 206. The two toothed rings 209 mesh with each other. A worm gear 2010 is fixedly installed at the rear end of the outer wall of one of the winding shafts 205. A worm 2011 meshes with the periphery of the worm gear 2010. The worm 2011 is located between the two winding shafts 205 on the left and right. A vertical shaft 2012 is fixedly installed inside the worm 2011. A one-way clutch 2013 is fixedly installed on the upper part of the outer wall of the vertical shaft 2012. A driven gear 2014 is fixedly installed on the outer wall of the one-way clutch 2013. A driving gear 503 is fixedly installed on the outer wall of the threaded rod 501. The driving gear 503 meshes with the driven gear 2014;

[0041] An internal threaded hole 1006 is formed at one end of the bottom wall of the top groove 106 away from the rope-passing hole 107. The internal threaded hole 1006 extends into the right-angle guide groove 105. A limit bolt 6 is threadedly connected inside the internal threaded hole 1006. The bottom of the limit bolt 6 abuts against the top of the lifting block 203;

[0042] A release component is provided inside the water-stop middle plate 1. The release component is used for the reset of the sand-brushing component;

[0043] The release component includes a slider 301. A path groove 109 is formed at the top of the water stop middle plate 1. The bottom of the path groove 109 is communicated with the top of the winding groove 108. The vertical shaft 2012 is rotatably installed inside the slider 301 through a bearing, and the vertical shaft 2012 penetrates through the bottom and top of the slider 301. The slider 301 is slidably installed between the left and right inner walls of the path groove 109. A push spring 302 is fixedly installed between the front of the slider 301 and the front wall of the path groove 109;

[0044] A force-receiving arm 303 is fixedly installed at the front end of the top of the slider 301. Force-receiving pins 304 are fixedly installed at both ends of the top of the force-receiving arm 303. Two left-right distributed guiding sliders 305 are fixedly installed at the left end and the right end of the top of the water stop middle plate 1. Two front-back distributed sliding rods 306 are slidably penetrated through the two guiding sliders 305. A dial 307 is fixedly installed at one end of the two sliding rods 306 away from the path groove 109. A top groove 106 is formed at the top of the water stop offset plate 102. The dial 307 extends into the top groove 106. A wedge block 309 is fixedly installed at one end of the two sliding rods 306 away from the dial 307. Return springs 3010 are sleeved on the outer periphery of the sliding rods 306. The return springs 3010 are fixedly installed between the wedge block 309 and one of the guiding sliders 305. The outer walls of the two force-receiving pins 304 are respectively abutted against the wedge surfaces of the two wedge blocks 309;

[0045] In this embodiment, specifically, by rotating the threaded rod 501, the driving gear 503 is also driven to rotate. The driving gear 503 drives the driven gear 2014 to rotate. The rotation of the driven gear 2014 drives the vertical shaft 2012 and the worm wheel 2010 to rotate under the one-way meshing action of the one-way clutch 2013. The rotation of the worm wheel 2010 drives the coaxial winding shaft 205 and the I-shaped wheel 206 connected thereto to rotate. The rotation of the I-shaped wheel 206 drives another I-shaped wheel 206 and the coaxial winding shaft 205 to rotate through two meshing gear rings 209, resulting in the winding of the left and right torsion springs 207 to generate a resilience force. The water stop offset plate 102 also drives the top groove 106 to move together. When the outer side of the sand scraping blade 202 contacts the side wall of the water conservancy construction ditch, the inner wall of one end of the top groove 106 just moves to abut against the inner side of the dial 307, causing the dial 307 to move. The movement of the dial 307 drives the two wedge blocks 309 to move together through the two slide bars 306, causing the left and right wedge blocks 309 to move away from each other, and the return spring 3010 is compressed and stores energy. The movement of the wedge blocks 309 away from each other causes the compressed push spring 302 to rebound, pushing the slider 301 to move backward along the path groove 109, and driving the vertical shaft 2012 and the worm 2011 to move together. The backward moving worm 2011 is disengaged from the meshing with the worm wheel 2010. Therefore, the self-locking of the worm 2011 to the worm wheel 2010 is released. At this time, the two limit bolts 6 on the left and right are rotated upward so that the bottom thereof is separated from the top of the lifting block 203. The two torsion springs 207 rebound, driving the left and right winding shafts 205 to rotate. The two winding shafts 205 drive the two I-shaped wheels 206 to rotate, winding the left and right soft ropes 204. The lifting block 203 is subjected to the winding pulling force of the soft rope 204 and moves in the direction close to the I-shaped wheel 206, thereby driving the flexible slide bar 201 to slide upward into the horizontal section area of the right-angle guide groove 105. The sliding of the flexible slide bar 201 drives the sand scraping blade 202 to move, and the sand scraping blade 202 moves to brush away the gravel on the side wall of the water conservancy construction ditch. When the flexible slide bar 201 drives the sand scraping blade 202 to completely move into the traction groove 104, continue to rotate the handle 502 to drive the threaded rod 501 to rotate, so that the internally threaded moving block 504 drives the hinge seat 505 to move downward, and continue to press the left and right ejector rods 506, pushing the two water stop offset plates 102 to both sides, so that the outer sides of the two water stop offset plates 102 are closely attached to the inner walls of both sides of the water conservancy construction ditch. Since the sand scraping blade 202 brushes away the gravel attached to the side wall of the water conservancy construction ditch, the outer side of the water stop offset plate 102 can be closely attached to the side wall of the water conservancy construction ditch, improving the water stop effect of the device.

[0046] Furthermore, rope holes 107 are provided on the upper part of the side surfaces adjacent to each other of the two water-stop deflectors 102, and the rope holes 107 are connected with the traction grooves 104. The soft rope 204 can flexibly pass through the rope holes 107. The diameter of the rope holes 107 is larger than the outer diameter of the soft rope 204. When the soft rope 204 is pulled, it will move along the inside of the rope holes 107. Therefore, the opening of the rope holes 107 can provide a giving way effect for the movement of the soft rope 204, avoid interference between the soft rope 204 and the water-stop deflectors 102, and ensure the free movement of the soft rope 204.

[0047] Embodiment 3: A path groove 109 is provided on the top of the water-stop middle plate 1, the bottom of the path groove 109 is connected to the top of the winding groove 108, the vertical shaft 2012 is rotatably mounted inside the slider 301 through a bearing, and the vertical shaft 2012 passes through the bottom and top of the slider 301, the slider 301 is slidably mounted between the left and right inner walls of the path groove 109, and a push spring 302 is fixedly mounted between the front part of the slider 301 and the front wall of the path groove 109;

[0048] A force-bearing arm 303 is fixedly installed at the top front end of the slider 301, and force-bearing pins 304 are fixedly installed at both ends of the top of the force-bearing arm 303. Two guide slides 305 distributed left and right are fixedly installed at the top left end and the top right end of the water-stop plate 1. Two slide bars 306 distributed front and back are installed in the internal sliding of the two guide slides 305. The ends of the two slide bars 306 away from the path groove 109 are jointly fixedly installed with a paddle 307. A top groove 106 is opened on the top of the water-stop deflector 102, and the paddle 307 extends to the inside of the top groove 106. A wedge block 309 is fixedly installed at the ends of the two slide bars 306 away from the paddle 307. The periphery of the slide bar 306 is sleeved with a return spring 3010, and the return spring 3010 is fixedly installed between the wedge block 309 and one of the guide slides 305. The outer walls of the two force-bearing pins 304 are respectively in contact with the wedge surfaces of the two wedge blocks 309.

[0049] Specifically in this embodiment, after the water stop is completed, the handle 502 is rotated in the reverse direction to drive the threaded rod 501 to reverse, so that the internally threaded moving block 504 drives the hinge seat 505 to move upward. And under the connection action of the two ejector rods 506, the two water stop offset plates 102 on the left and right move closer to each other along the inner wall of the water stop guide groove 101. The inner end surface of the top groove 106 releases the pressure on the dial 307. The resilience of the return spring 3010 drives the two wedges 309 on the left and right to move towards the middle. And under the wedge force of the wedge 309 and the force receiving pin 304, the force receiving arm 303 and the slider 301 are pushed forward along the path groove 109. The push spring 302 is compressed again. The forward movement of the slider 301 drives the vertical shaft 2012 and the worm 2011 to move, so that the worm wheel 2010 meshes with the worm 2011 again. At the same time, the threaded rod 501 also drives the driving gear 503 to reverse. The driving gear 503 drives the driven gear 2014 engaged with it to reverse. Due to the one-way meshing drive characteristic of the one-way clutch 2013, after the driven gear 2014 reverses, it cannot transmit the torque to the vertical shaft 2012 through the one-way clutch 2013. Therefore, the reverse rotation of the driven gear 2014 will not cause the vertical shaft 2012 and the worm 2011 to rotate. Therefore, the worm wheel 2010 is in a static state, and the two winding shafts 205 and the I-shaped wheels 206 do not rotate, so that the soft rope 204 wound around the periphery of the I-shaped wheel 206 will not be released, and the soft rope 204 can be prevented from being knotted and entangled.

[0050] Embodiment 4: The front and back of the water stop offset plate 102 are both provided with storage grooves 1002. A support swing bar 401 is rotatably installed inside the storage groove 1002. A telescopic hole is opened at the bottom of the support swing bar 401. An adjusting rod 402 is slidably installed inside the telescopic hole at the bottom of the support swing bar 401. A support footrest 403 is fixedly installed at the bottom of the adjusting rod 402. A fastening screw hole 404 is opened through the lower part of the outer side surface of the fastening screw hole 404. A fastening bolt 405 is screwed inside the fastening screw hole 404. The end of the fastening bolt 405 abuts against the outer wall of the adjusting rod 402. A magnetic sheet fixing groove 1003 is opened at the lower part of the inner wall of the storage groove 1002 away from its opening. An adsorption magnetic sheet 406 is fixedly installed inside the magnetic sheet fixing groove 1003;

[0051] Specifically in this embodiment, after the water stop offset plate 102 is removed from the inside of the water stop guide groove 101, the construction worker can rotate and unfold the support swing bar 401 from the inside of the storage groove 1002. And after loosening the fastening bolt 405, the adjusting rod 402 can be slid up and down telescopically to adjust the combined length of the support swing bar 401 and the adjusting rod 402. After the support footrest 403 at the bottom of the adjusting rod 402 abuts against the bottom of the water conservancy construction ditch, the fastening bolt 405 is tightened to fasten and lock the adjusting rod 402. The device is laterally supported by the rotated and unfolded support swing bar 401 and the adjusting rod 402, avoiding the device from tipping over due to the water pressure, and improving the stability of the device during use. The function of setting the adsorption magnetic sheet 406 is that when the support swing bar 401 and the adjusting rod 402 do not need to provide a supporting effect, after the support swing bar 401 is stored in the storage groove 1002, under the magnetic adsorption effect of the adsorption magnetic sheet 406, the support swing bar 401 will not easily rotate out of the storage groove 1002, ensuring the stability of the support swing bar 401 when not in use.

[0052] When a water stop device for hydropower station construction in this solution is working, the water stop middle plate 1 is placed in the water conservancy construction ditch. By manually rotating the handle 502 to drive the threaded rod 501 to rotate, the threaded rod 501 generates a threaded thrust to push the internally threaded moving block 504 downward along the two vertical grooves 1005. The downward movement of the internally threaded moving block 504 drives the hinge seat 505 to move downward together, applying a downward thrust to the tops of the two ejector rods 506. Immediately afterwards, the two ejector rods 506 push the two water stop offset plates 102 outwards along the inner wall of the water stop guide groove 101. The two water stop offset plates 102 move away from each other and gradually approach the side walls of the water conservancy construction ditch. During the movement of the two water stop offset plates 102 moving away from each other, they also drive the two flexible slide bars 201 and the two sand-scraping blades 202 to move. Until the two sand-scraping blades 202 on the left and right contact the inner walls of both sides of the water conservancy construction ditch, stop rotating the handle 502. At the same time, when the two water stop offset plates 102 move away from each other, they also drive the flexible slide bars 201, the sand-scraping blades 202 and the lifting block 203 to move together;

[0053] Meanwhile, the rotation of the threaded rod 501 also drives the rotation of the driving gear 503. The driving gear 503 drives the rotation of the driven gear 2014. The rotation of the driven gear 2014 drives the vertical shaft 2012 and the worm gear 2010 to rotate under the one-way meshing action of the one-way clutch 2013. The rotation of the worm gear 2010 drives the coaxial winding shaft 205 and the I-shaped wheel 206 connected thereto to rotate. The rotation of the I-shaped wheel 206 drives another I-shaped wheel 206 and the winding shaft 205 to rotate through two meshing gear rings 209, resulting in the winding of the left and right spiral springs 207 to generate a resilience force. The water-stop offset plate 102 also drives the top groove 106 to move together. When the outer side of the sand-scraping blade 202 contacts the side wall of the water conservancy construction ditch, the inner wall of one end of the top groove 106 just moves to abut against the inner side of the dial 307, causing the dial 307 to move. The movement of the dial 307 drives the wedge blocks 309 to move together through two slide bars 306, causing the left and right wedge blocks 309 to move away from each other, and the return spring 3010 is compressed and stores energy. The movement of the wedge blocks 309 away from each other causes the compressed push spring 302 to rebound, pushing the slider 301 to move backward along the path groove 109, and driving the vertical shaft 2012 and the worm 2011 to move together. The backward-moving worm 2011 is disengaged from the meshing with the worm gear 2010. Therefore, the self-locking of the worm 2011 to the worm gear 2010 is released. At this time, the two limit bolts 6 on the left and right are rotated upward so that the bottom thereof is separated from the top of the lifting block 203. The two spiral springs 207 rebound, driving the left and right winding shafts 205 to rotate. The two winding shafts 205 drive the two I-shaped wheels 206 to rotate, winding the left and right soft ropes 204. The lifting block 203 is subjected to the winding pulling force of the soft rope 204 and moves in the direction close to the I-shaped wheel 206, thereby driving the flexible slide bar 201 to slide upward into the horizontal section area of the right-angle guide groove 105. The sliding of the flexible slide bar 201 drives the sand-scraping blade 202 to move, and the sand-scraping blade 202 moves to brush away the gravel on the side wall of the water conservancy construction ditch. When the flexible slide bar 201 drives the sand-scraping blade 202 to completely move into the traction groove 104, continue to rotate the handle 502 to drive the threaded rod 501 to rotate, so that the internally threaded moving block 504 drives the hinge seat 505 to move downward, and continue to press the left and right ejector rods 506, pushing the two water-stop offset plates 102 to both sides, so that the outer sides of the two water-stop offset plates 102 are closely attached to the inner walls of both sides of the water conservancy construction ditch. Since the sand-scraping blade 202 brushes away the gravel attached to the side wall of the water conservancy construction ditch, the outer side of the water-stop offset plate 102 can be closely attached to the side wall of the water conservancy construction ditch, improving the water-stop effect of the device;

[0054] After the water stop is completed, rotate the handle 502 in the reverse direction to drive the threaded rod 501 to reverse, so that the internally threaded moving block 504 drives the hinge seat 505 to move upward. Under the connection action of the two ejector rods 506, the two water stop offset plates 102 on the left and right move closer to each other along the inner wall of the water stop guide groove 101. The inner end surface of the top groove 106 releases the pressure on the dial 307. The resilience of the return spring 3010 drives the two wedges 309 on the left and right to move towards the middle. Under the wedge force action of the wedge 309 and the force receiving pin 304, the force receiving arm 303 and the slider 301 are pushed forward along the path groove 109, and the push spring 302 is compressed again. The forward movement of the slider 301 drives the vertical shaft 2012 and the worm 2011 to move, so that the worm gear 2010 meshes with the worm 2011 again. At the same time, the threaded rod 501 also drives the driving gear 503 to reverse. The driving gear 503 drives the driven gear 2014 engaged with it to reverse. Due to the one-way meshing drive characteristic of the one-way clutch 2013, the driven gear 2014 cannot transmit the torque to the vertical shaft 2012 through the one-way clutch 2013 after reversing. Therefore, the reverse rotation of the driven gear 2014 will not cause the vertical shaft 2012 and the worm 2011 to rotate. Therefore, the worm gear 2010 is in a static state, and the two winding shafts 205 and the I-shaped wheels 206 do not rotate, so that the soft rope 204 wound around the periphery of the I-shaped wheel 206 will not be released, and the soft rope 204 can be prevented from being knotted and entangled.

[0055] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention.

Claims

1. A water stop device for hydropower station construction, characterized in that: It includes a water-stop middle plate (1). The left and right parts of the water-stop middle plate (1) are penetrated and provided with water-stop guide grooves (101). Two water-stop offset plates (102) distributed left and right are slidably installed inside the water-stop guide grooves (101). Side grooves (103) are formed on the side surfaces of the two water-stop offset plates (102) facing away from each other. Traction grooves (104) are formed on the upper parts of the side surfaces of the two water-stop offset plates (102) facing away from each other. The traction grooves (104) are located at the tops of the side grooves (103), and the traction grooves (104) communicate with the inner walls of the side grooves (103). Right-angle guide grooves (105) are formed on the front and rear walls of the side grooves (103) and the traction grooves (104). A sand-scraping component. The sand-scraping component is slidably arranged inside the side grooves (103) and the traction grooves (104), and is used for scraping off sand grains on the inner wall of the water conservancy construction ditch. A release component. The release component is arranged inside the water-stop middle plate (1), and is used for resetting the sand-scraping component.

2. The water stop device for hydropower station construction according to claim 1, wherein: The sand-scraping component includes a flexible slide bar (201). The flexible slide bar (201) is slidably installed inside the two right-angle guide grooves (105) at the front and back, and the sand-scraping blade (202) extends into the traction groove (104). A sand-scraping blade (202) is fixedly installed on the side surface of the flexible slide bar (201) away from the water-stop offset plate (102). A lifting block (203) is fixedly installed at the top of one end of the flexible slide bar (201) located in the traction groove (104). A soft rope (204) is fixedly installed on the inner side surface of the lifting block (203).

3. The water stop device for hydropower station construction according to claim 2, characterized in that: A winding groove (108) is formed inside the water-stop middle plate (1). The winding groove (108) is located at the top of the water-stop guide groove (101). Two winding shafts (205) distributed left and right are rotatably installed between the front and rear walls of the winding groove (108). Shaped wheels (206) are fixedly installed on the outer walls of the two winding shafts (205). The soft rope (204) movably penetrates through the bottom wall of the water-stop guide groove (101) and extends into the winding groove (108). One end of the soft rope (204) away from the lifting block (203) is wound around the periphery of the shaped wheel (206). Volute springs (207) are fixedly installed at the front ends of the outer walls of the winding shafts (205). Two limit torsion hoops (208) distributed left and right are fixedly installed on the front wall of the winding groove (108). One ends of the two volute springs (207) away from the winding shafts (205) are respectively fixedly connected to the inner walls of the two limit torsion hoops (208).

4. A water stop device for hydropower station construction according to claim 3, characterized in that: The outer walls of both of the I-shaped wheels (206) are fixedly provided with toothed rings (209), and the two toothed rings (209) are meshed with each other. A worm gear (2010) is fixedly installed at the rear end of the outer wall of one of the winding shafts (205). A worm (2011) is meshed around the worm gear (2010). The worm (2011) is located in the middle of the left and right winding shafts (205). A vertical shaft (2012) is fixedly installed on the inner wall of the worm (2011). A one-way clutch (2013) is fixedly installed on the upper part of the outer wall of the vertical shaft (2012). A driven gear (2014) is fixedly installed on the outer wall of the one-way clutch (2013).

5. The water stop device for hydropower station construction according to claim 4, characterized in that: A bearing hole (1010) is formed in the top of the water-stop middle plate (1). The bearing hole (1010) penetrates through the winding groove (108) and extends into the interior of the water-stop guide groove (101). A threaded rod (501) is rotatably installed in the bearing hole (1010). The threaded rod (501) is located in front of the vertical shaft (2012). A handle (502) is fixedly installed at the top of the threaded rod (501). A driving gear (503) is fixedly installed on the outer wall of the threaded rod (501). The driving gear (503) is meshed with the driven gear (2014). An internally threaded moving block (504) is in threaded connection with the outer wall of the threaded rod (501). A hinge seat (505) is fixedly installed at the bottom of the internally threaded moving block (504). Two laterally distributed ejector rods (506) are hinged to the bottom of the hinge seat (505). The ends of the two ejector rods (506) far away from the hinge seat (505) are respectively hinged to the lower parts of the opposite faces of the left and right water-stop offset plates (102). Vertical grooves (1005) are formed in the front wall and the rear wall of the water-stop guide groove (101). The internally threaded moving block (504) is slidably installed in the two vertical grooves (1005).

6. The water stop device for hydropower station construction according to claim 5, wherein: The release component includes a slider (301). A path groove (109) is formed in the top of the water-stop middle plate (1). The bottom of the path groove (109) is communicated with the top of the winding groove (108). The vertical shaft (2012) is rotatably installed in the slider (301) through a bearing, and the vertical shaft (2012) penetrates through the bottom and the top of the slider (301). The slider (301) is slidably installed between the left and right inner walls of the path groove (109). A push spring (302) is fixedly installed between the front part of the slider (301) and the front wall of the path groove (109).

7. A water stop device for hydropower station construction according to claim 6, characterized in that: A force-bearing arm (303) is fixedly installed at the front end of the top of the slider (301). Force-bearing pins (304) are fixedly installed at both ends of the top of the force-bearing arm (303). Two left-right distributed guiding sliders (305) are fixedly installed at the left end and the right end of the top of the water-stop middle plate (1). Two front-back distributed sliding rods (306) are slidably penetrated and installed inside the two guiding sliders (305). A dial (307) is fixedly installed at one end of the two sliding rods (306) away from the path groove (109). A top groove (106) is formed at the top of the water-stop offset plate (102). The dial (307) extends into the top groove (106). A wedge block (309) is fixedly installed at one end of the two sliding rods (306) away from the dial (307). Return springs (3010) are sleeved on the outer periphery of the sliding rods (306). The return springs (3010) are fixedly installed between the wedge block (309) and one of the guiding sliders (305). The outer walls of the two force-bearing pins (304) are respectively abutted against the wedge surfaces of the two wedge blocks (309).

8. A water stop device for hydropower station construction according to claim 7, characterized in that: Rope-passing holes (107) are formed in the upper parts of the sides of the two water-stop offset plates (102) close to each other. The rope-passing holes (107) communicate with the traction grooves (104). The soft rope (204) is movably penetrated through the rope-passing holes (107). The aperture of the rope-passing holes (107) is larger than the outer diameter of the soft rope (204).

9. The water stop device for hydropower station construction according to claim 8, characterized in that: An internal threaded hole (1006) is formed at one end of the bottom wall of the top groove (106) away from the rope-passing hole (107). The internal threaded hole (1006) extends into the right-angle guide groove (105). A limit bolt (6) is threadedly connected inside the internal threaded hole (1006). The bottom of the limit bolt (6) abuts against the top of the lifting block (203).

10. A water stop device for hydropower station construction according to claim 9, characterized in that: Receiving grooves (1002) are formed on the front and back of the water-stop offset plate (102). A supporting swing bar (401) is rotatably installed inside the receiving grooves (1002). A telescopic hole is formed at the bottom of the supporting swing bar (401). An adjusting rod (402) is slidably installed inside the telescopic hole at the bottom of the supporting swing bar (401). A supporting footrest (403) is fixedly installed at the bottom of the adjusting rod (402). A fastening threaded hole (404) is formed in the lower part of the outer side of the fastening screw hole (404). A fastening bolt (405) is threadedly screwed inside the fastening threaded hole (404). The end of the fastening bolt (405) abuts against the outer wall of the adjusting rod (402). A magnetic sheet fixing groove (1003) is formed in the lower part of the inner wall of one side of the receiving groove (1002) away from its opening. An adsorption magnetic sheet (406) is fixedly installed inside the magnetic sheet fixing groove (1003).

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