A water-stopping and anti-seepage device for water retaining construction of water conservancy projects

Abstract

The present invention discloses a water-stopping and anti-seepage device for water retaining construction of a water conservancy project, comprising a water stop plate, a switching component, a support component and an extension component, one side of the water stop plate is fixedly connected with a positioning frame, and the insides of the water stop plate and the positioning frame are interconnected, both ends of one side of the water stop plate are provided with vertical grooves for the support component to unfold, and both sides of the water stop plate are fixedly connected with scrapers, and the scrapers correspond to the extension component. The present invention provides support to the water stop plate while effectively dispersing the load on the water stop plate by setting a support component; by setting an extension component, the width of the water channel is adaptively adjusted to achieve blocking and water stopping, and the extension process has self-locking properties to further effectively reduce the risk of water leakage at the gap; by setting a switching component, the device automatically switches to the water channel blocking operation after completing the support unfolding operation, effectively reducing the amount of operation of personnel to improve the working efficiency of the device.

Description

Technical Field

[0001] The invention relates to the technical field of water conservancy equipment, in particular to a water stopping and anti-seepage device for water retaining construction of a water conservancy project. Background Art

[0002] In water conservancy projects, water-stopping and anti-seepage of water retaining structures (such as dams, reservoirs, channels, etc.) is a key link to ensure the safety and durability of the project. Although traditional water-stopping and anti-seepage technology has met the needs of the project to a certain extent, its limitations have gradually emerged with the expansion of the project scale and the improvement of environmental requirements.

[0003] After searching, the Chinese patent with publication number CN118621741B includes a waterstop plate, the outer wall of the waterstop plate is fixedly installed with a loading tube, the inner wall of the loading tube is slidably installed with a ground pile, the interior of the waterstop plate is provided with a rectangular groove, the inner wall of the rectangular groove is provided with a C-shaped groove, and also includes an extension device; wherein the extension device includes a rectangular plate, a lifting cylinder, a gripping rod, a No. 1 spring, a contact block, a pushing plate, a No. 2 spring, a rubber plate and a resisting plate, the rectangular plate is slidably installed inside the rectangular groove, the lifting cylinder is slidably installed inside the rectangular plate, the kinetic energy is increased when the No. 2 spring is restored, the efficiency of the deployment of the rectangular plate is effectively improved, and then the initial velocity of the No. 2 spring when it is reset is slowed down, which helps to improve the safety of the staff in the waterstop preparation work.

[0004] However, in the process of the rectangular plate of the above-mentioned patent being unfolded in cooperation with the grip rod to fit the waterway, since the unfolding stroke of the rectangular plate is limited by the size of the C-shaped groove, that is, the unfolding degree of the rectangular plate is fixed, it is difficult for the device to achieve the same sealing and blocking effect on rivers of different widths and specifications. For waterways with smaller widths, the rectangular plate has not yet been unfolded to the maximum stroke when contacting both sides of the waterway. At this time, the self-locking relationship between the rectangular plate and the lifting cylinder has not yet been achieved, resulting in the risk of the rectangular plate being displaced due to water flow impact or vibration during the subsequent water-stopping process, thereby reducing the water-stopping quality of the device. On the other hand, in the use of the above-mentioned patent, due to the dynamics of the impact angle of the water flow on the waterstop plate and the uncertainty of the magnitude of the force, when the water flow impacts the top area of ​​the waterstop plate, the waterstop plate may be overloaded and may be tilted, thereby causing the water-stopping operation of the device to fail. Summary of the invention

[0005] The purpose of the present invention is to provide a water-stopping and anti-seepage device for water retaining construction of a hydraulic project, which has the advantages of adjustable deployment and load dispersion, and solves the problems raised in the background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a water-stopping and anti-seepage device for water retaining construction of a water conservancy project, comprising a water stop plate, a switching assembly, a support assembly and an extension assembly, one side of the water stop plate is fixedly connected to a positioning frame and the insides of the water stop plate and the positioning frame are interconnected, both ends of one side of the water stop plate are provided with vertical grooves for the support assembly to unfold, both sides of the water stop plate are fixedly connected to scrapers and the scrapers correspond to the extension assembly in position;

[0007] The switching assembly includes a driving motor as a power source of the device and a limiting shaft as an output shaft of the driving motor, and the limiting shaft extends through the interior of the positioning frame;

[0008] The support assembly includes a lifting mechanism connected to the switching assembly by transmission and a gripping mechanism for realizing the limited support of the water stop plate, the lifting mechanism includes a fixed shaft 1 fixedly connected to the inside of the water stop plate, and the gripping mechanism includes a support plate arranged on one side of the water stop plate;

[0009] The extension assembly includes a transmission mechanism connected to the switching assembly and an expansion mechanism for achieving waterway blocking, the transmission mechanism includes a bevel gear three that is limitedly rotated and connected to the outer contour of the bottom end of a fixed shaft, and the expansion mechanism includes a fixed shaft two that is fixedly connected to the inside of the water stop plate.

[0010] Preferably, a bevel gear 1 is fixedly connected to the outer contour of the middle section of the limit shaft and the bevel gear 1 is located inside the positioning frame, a fixing frame passes through the lower half of the limit shaft and the other end of the fixing frame is fixedly connected to the inner wall of the positioning frame, the limit shaft passes through the outer contour located inside the fixing frame, a positioning ring is fixedly connected to the outer contour of the middle section of the limit shaft located inside the limit frame, and a reset spring sleeved on the outer contour of the limit shaft is provided between the upper and lower sides of the positioning ring and the inner wall of the limit frame.

[0011] Preferably, a compression spring is passed through the connection between the fixing frame and the positioning frame, and one end of the compression spring is fixedly connected to the inner wall of the positioning frame, and the other end of the compression spring is fixedly connected to a positioning pin, and the positioning pin and the outer contour inclined surface of the limiting frame are mutually abutted and transmission connected.

[0012] Preferably, the middle section of the fixed shaft one passes through a bevel gear two, and the bevel gear two and the bevel gear one are meshed with each other and transmission connected, the upper surface of the bevel gear two is fixedly connected to a transmission wheel one sleeved on the outer contour of the fixed shaft one, and the bottom end of the bevel gear two is fixedly connected to a dividing ring sleeved on the outer contour of the fixed shaft one, a chain is meshed and transmission connected on the outer contour of the transmission wheel one, both ends of the chain are meshed and transmission connected with the transmission wheel two, a feed screw is fixedly connected at the axis center of the transmission wheel two, and the feed screw is limited and rotationally connected to the two ends inside the water stop plate, the upper half of the feed screw is screwed with a lifting rod, and the lifting rod is located in the vertical groove of the water stop plate and extends outward, the bottom end of the feed screw is limited and rotationally connected to a fixed rod, and the fixed rod passes through the water stop plate and extends outward.

[0013] Preferably, the top end of the support plate is penetrated by and rotatably connected with a positioning rod 1, the positioning rod 1 is penetrated by and rotatably connected to the other end of the lifting rod, the bottom end of the support plate is penetrated by and rotatably connected with a positioning rod 2, both ends of the positioning rod 2 located outside the support plate are penetrated by and rotatably connected with connecting rods, the other end of the connecting rods is penetrated by and rotatably connected with the same positioning rod 3, both ends of the positioning rod 3 are penetrated by and rotatably connected to the fixing rod, a bottom plate is fixedly connected between the connecting rods located on the left and right sides of the positioning frame, and a plurality of rivets are distributed on the outer surface of the bottom plate.

[0014] Preferably, the bottom end of the bevel gear three is fixedly connected to bevel gear one, the outer contour of the bevel gear one is meshed and transmission connected to bevel gear two, the axis of the bevel gear two is fixedly connected to a positioning shaft and both ends of the positioning shaft pass through and are rotatably connected to the inside of the water stop plate, the middle section of the positioning shaft is fixedly connected to a worm, and the bottom end of the worm is meshed and transmission connected to a worm wheel.

[0015] Preferably, the second fixed shaft passes through the axis of the worm wheel, and the positions of the second fixed shaft located on both sides of the worm wheel are rotatably connected to guide wheels, and the guide wheels are fixedly connected to the worm wheel, and the outer contours of the two guide wheels are meshed and transmission connected with racks located inside the water stop plate, the two racks are staggered, and the ends of the two racks pointing to the outside of the water stop plate are fixedly connected to the telescopic plate inside the water stop plate with limited sliding connection.

[0016] Preferably, the surfaces of the two telescopic plates are provided with holes for limiting the sliding of another rack, and the sliding extension position of the telescopic plate on the water stop plate corresponds to the position of the scraper.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention provides support components to effectively disperse the load on the waterstop plate while providing support for the waterstop plate, thereby eliminating the influence of water flow impact on the displacement of the waterstop plate.

[0019] 2. The present invention sets an extension component to adapt to the width of the waterway to achieve water blocking, and the extension process has a self-locking property to further effectively reduce the risk of water leakage in the gap.

[0020] 3. The present invention sets a switching component so that the device automatically switches to the waterway blocking operation after completing the support deployment operation, which effectively reduces the amount of operation by personnel and improves the working efficiency of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0022] Figure 2 It is a cross-sectional view of the main structure of the present invention;

[0023] Figure 3 It is a schematic diagram of the water stop plate frame of the present invention;

[0024] Figure 4 This is a schematic diagram of the structure of the switching component of the present invention;

[0025] Figure 5 It is a schematic diagram of the positional relationship between the lifting mechanism and the transmission mechanism of the present invention;

[0026] Figure 6 It is a schematic diagram of the lifting mechanism of the present invention;

[0027] Figure 7 It is a schematic diagram of the gripping mechanism of the present invention;

[0028] Figure 8 It is a schematic diagram of the transmission mechanism of the present invention;

[0029] Fig. 9 It is a schematic diagram of the unfolding mechanism of the present invention.

[0030] In the figure: 1. water stop plate; 11. positioning frame; 12. scraper; 2. drive motor; 21. limit shaft; 22. bevel gear one; 23. fixed frame; 24. compression spring; 25. positioning pin; 26. limit frame; 27. positioning ring; 28. reset spring; 3. fixed shaft one; 31. bevel gear two; 32. transmission wheel one; 33. separator ring; 34. chain; 35. transmission wheel two; 36. feed screw; 37. lifting rod; 38. fixed rod; 4. bevel gear three; 41. bevel gear one; 42. bevel gear two; 43. positioning shaft; 44. worm; 45. worm wheel; 5. support plate; 51. positioning rod one; 52. positioning rod two; 53. connecting rod; 54. positioning rod three; 55. bottom plate; 56. rivet; 6. fixed shaft two; 61. guide wheel; 62. rack; 63. telescopic plate. DETAILED DESCRIPTION

[0031] 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. Embodiment 1:

[0032] See also Figures 1 to 9 The present invention provides a technical solution: a water-stopping and anti-seepage device for water retaining construction of a water conservancy project, comprising a water stop plate 1, a switching assembly, a support assembly and an extension assembly, one side of the water stop plate 1 is fixedly connected to a positioning frame 11, and the insides of the water stop plate 1 and the positioning frame 11 are interconnected, both ends of one side of the water stop plate 1 are provided with vertical grooves for the support assembly to unfold, both sides of the water stop plate 1 are fixedly connected to scrapers 12, and the scrapers 12 correspond to the positions of the extension assembly;

[0033] The switching assembly includes a driving motor 2 as a power source of the device and a limiting shaft 21 as an output shaft of the driving motor 2, and the limiting shaft 21 extends through the interior of the positioning frame 11;

[0034] The support assembly includes a lifting mechanism connected to the switching assembly in a transmission manner and a gripping mechanism for realizing the limited support of the water stop plate 1, the lifting mechanism includes a fixed shaft 3 fixedly connected to the inside of the water stop plate 1, and the gripping mechanism includes a support plate 5 arranged on one side of the water stop plate 1;

[0035] The extension assembly includes a transmission mechanism connected to the switching assembly and an expansion mechanism for realizing waterway blocking, the transmission mechanism includes a bevel gear three 4 connected to the outer contour of the bottom end of the fixed shaft one 3 for limited rotation, and the expansion mechanism includes a fixed shaft two 6 fixedly connected to the inside of the water stop plate 1.

[0036] First, the waterstop plate 1 serves as the main structure of the device. After the waterstop plate 1 is placed inside the waterway, the waterway is blocked and closed through the cooperation of the waterstop plate 1 and the extension component to achieve the water-stopping function of the device. The positioning frame 11 provides limiting support for the switching component, and the scraper 12 further cooperates with the extension component to scrape off the mud adhered to its surface to ensure the cleanliness of the device.

[0037] When the device needs to be used, the water stop plate 1 is placed in the middle position of the waterway, and then the drive motor 2 is turned on to drive the switching component to work, and the switching component simultaneously drives the supporting component. At this time, the supporting component gradually unfolds and contacts the bottom of the waterway to achieve limited support for the water stop plate 1 while dispersing the load on the surface of the water stop plate 1. Then, after the supporting component is unfolded to the extreme position, the switching component automatically disconnects it from the supporting component and starts to drive the extending component. At this time, the extending component is synchronously unfolded to achieve blocking and water stopping of the waterway.

[0038] It should be noted that due to the uncertainty of the degree of silt accumulation at the bottom of the waterway and the width of both sides, when the device is applied to different waterways, there are differences in the maximum deployment degree of its support assembly and extension assembly. The above-mentioned support assembly and extension assembly with adjustable maximum stroke can effectively broaden the applicable scenarios of the device. Embodiment 2:

[0039] See also Figure 4 and Figure 5 This embodiment is further described on the basis of the first embodiment: a bevel gear 22 is fixedly connected to the outer contour of the middle section of the limit shaft 21 and the bevel gear 22 is located inside the positioning frame 11, a fixing frame 23 passes through the lower half of the limit shaft 21 and the other end of the fixing frame 23 is fixedly connected to the inner wall of the positioning frame 11, the limit shaft 21 is located inside the fixing frame 23 and the outer contour passes through the limit frame 26, a positioning ring 27 is fixedly connected to the outer contour of the limit shaft 21 located in the middle section inside the limit frame 26, and a reset spring 28 sleeved on the outer contour of the limit shaft 21 is provided between the upper and lower sides of the positioning ring 27 and the inner wall of the limit frame 26.

[0040] A compression spring 24 is provided through the connection between the fixing frame 23 and the positioning frame 11, and one end of the compression spring 24 is fixedly connected to the inner wall of the positioning frame 11, and the other end of the compression spring 24 is fixedly connected to a positioning pin 25, and the positioning pin 25 and the outer contour inclined surface of the limiting frame 26 are mutually abutted and transmission connected.

[0041] When the driving motor 2 is started, it drives the limit shaft 21 and the bevel gear 22 to rotate synchronously. At this time, the bevel gear 22 further drives the support assembly to unfold. When the support assembly is unfolded to the maximum stroke, it is locked by the silt at the bottom of the waterway. At this time, under the limiting action of the support assembly, the rotation of the bevel gear 22 causes it to generate a downward axial force, and then the bevel gear 22 drives the limit shaft 21 and the driving motor 2 to move downward as a whole until the bevel gear 22 is out of contact with the support assembly.

[0042] In the process of the bevel gear 22 driving the limit shaft 21 to move downward, the positioning ring 27 moves downward synchronously and tends to drive the return springs 28 on both sides thereof to move synchronously. The return spring 28 is limited by the limit frame 26. The displacement of the limit frame 26 will squeeze and cause the positioning pin 25 to shrink back into the fixed frame 23. This process requires overcoming the deformation work of the compression spring 24.

[0043] That is, during the downward movement of the positioning ring 27, the position of the limit frame 26 does not change at first. At this time, the positioning ring 27 drives the return springs 28 on both sides thereof to deform. The return spring 28 at the bottom of the positioning ring 27 is compressed and the return spring 28 at the top of the positioning ring 27 is stretched. Furthermore, as the deformation of the two return springs 28 gradually increases, the force of pushing and pulling the limit frame 26 increases synchronously. When this part of the force is greater than the compression modulus of the compression spring 24, the limit frame 26 starts to move downward and squeezes the positioning pin 25 under the action of its inclined surface to retract into the fixed frame 23.

[0044] Furthermore, when the lower inclined surface of the limit frame 26 passes through the positioning pin 25, the positioning pin 25 releases the support of the limit frame 26. At this time, the two reset springs 28 tend to reset and drive the limit frame 26, the positioning ring 27 and the limit shaft 21 to rapidly descend until the limit frame 26 contacts the bottom end of the fixed frame 23. At this time, the positioning pin 25 contacts the upper inclined surface of the limit frame 26 and under the reset action of the compression spring 24, the support and limit of the limit frame 26 are re-realized. In this process, the limit shaft 21 drives the bevel gear 22 to move downward rapidly, which corresponds to the bevel gear 22 disengaging from the support assembly and starting the switching process of the transmission extension assembly.

[0045] It can be seen from the above that, through the movement coordination of the various components in the switching assembly, the bevel gear 22 can be kept in the meshing position with the support assembly or the extension assembly, and during the switching process of its rising or falling movement, the reset spring 28 and the compression spring 24 provide auxiliary power to reduce the response time of the switching process, thereby achieving fast switching. Embodiment three:

[0046] See also Figure 5-Figure 7 This embodiment is further described on the basis of the second embodiment: the middle section of the fixed shaft 1 3 is penetrated by a bevel gear 2 31, and the bevel gear 2 31 and the bevel gear 22 are meshed and transmission-connected with each other, the upper surface of the bevel gear 2 31 is fixedly connected with a transmission wheel 1 32 sleeved on the outer contour of the fixed shaft 1 3, the bottom end of the bevel gear 2 31 is fixedly connected with a separation ring 33 sleeved on the outer contour of the fixed shaft 1 3, and the outer contour of the transmission wheel 1 32 is meshed and transmission-connected with a chain 3 4. Both ends of the chain 34 are meshed and transmission-connected with a transmission wheel 2 35. A feed screw 36 is fixedly connected to the axis of the transmission wheel 2 35, and the feed screw 36 is rotationally limited and connected to the two ends inside the water stop plate 1. The upper half of the feed screw 36 is screwed with a lifting rod 37, and the lifting rod 37 is located in the vertical groove of the water stop plate 1 and extends outward. The bottom end of the feed screw 36 is rotationally limited and connected with a fixed rod 38, and the fixed rod 38 penetrates the water stop plate 1 and extends outward.

[0047] The top end of the support plate 5 is penetrated by and rotatably connected with a positioning rod 1 51, which penetrates and is rotatably connected to the other end of the lifting rod 37, and the bottom end of the support plate 5 is penetrated by and rotatably connected with a positioning rod 2 52, and both ends of the positioning rod 2 52 located outside the support plate 5 are penetrated by and rotatably connected with a connecting rod 53, and the other end of the connecting rod 53 is penetrated by and rotatably connected with the same positioning rod 3 54, and both ends of the positioning rod 3 54 are penetrated by and rotatably connected to the fixing rod 38, and a bottom plate 55 is fixedly connected between the connecting rods 53 located on the left and right sides of the positioning frame 11, and a plurality of rivets 56 are distributed on the outer surface of the bottom plate 55.

[0048] When the bevel gear 22 is engaged with the support assembly, the bevel gear 22 drives the bevel gear 2 31, the transmission wheel 1 32 and the separating ring 33 to rotate synchronously. The separating ring 33 is used to separate the support assembly from the extension assembly to avoid excessive stress and structural damage caused by the simultaneous engagement of the bevel gear 22 with the support assembly and the extension assembly during the switching process; the transmission wheel 1 32 further drives the transmission wheel 2 35 and the feed screw 36 to rotate synchronously through the chain 34. At this time, the rotation of the feed screw 36 drives the lifting rod 37 to start descending under the limited cooperation of the vertical groove of the water stop plate 1, while the position of the fixing rod 38 remains fixed, thereby completing the deployment process of the support assembly.

[0049] When the lifting rod 37 descends, it drives the positioning rod 1 51 to descend synchronously. At this time, the support plate 5 and the positioning rod 2 52 descend synchronously and squeeze the connecting rod 53 to deflect along the axis of the positioning rod 3 54; along with the gradual deflection of the connecting rod 53, it approaches the horizontal state from the inclined state; when the lifting rod 37 descends to the maximum stroke along the vertical groove opened on the surface of the water stop plate 1, the connecting rod 53 is in a horizontal state, the bottom plate 55 is in contact with the bottom of the waterway, and the rivet 56 is inserted into the silt at the bottom of the waterway to further improve the grip of the support assembly; at this time, a triangular support frame is formed between the support plate 5, the bottom plate 55 and the water stop plate 1, and part of the load borne on the surface of the water stop plate 1 is transferred to the bottom of the waterway through the support plate 5 and the bottom plate 55, thereby effectively avoiding the damage of the water stop plate 1 caused by excessive local stress due to the impact of the water flow. At the same time, this triangular support frame further limits the lateral displacement and torsion of the water stop plate 1, thereby effectively avoiding the displacement of the water stop plate 1 under the impact of the water flow, and further ensuring the stability of the device.

[0050] It should be noted that in actual usage scenarios, due to the different degrees of silt accumulation at the bottom of the waterway, there are differences in the maximum degree of deflection of the connecting rod 53, that is, the bottom plate 55 may have contacted the silt at the bottom of the waterway before reaching a horizontal state. At this time, with the descent of the lifting rod 37, the bottom plate 55 further compacts the silt to increase the riveting degree of the rivet 56 at the bottom of the waterway, thereby improving the stability of the device; and even if the bottom plate 55 is in a nearly horizontal state, it can still form a triangular support frame between the support plate 5 and the water stop plate 1. Since the lifting rod 37 is in a fixed state when the feed screw 36 is not rotated, the support assembly can also provide effective support for the water stop plate 1 at this time.

[0051] Furthermore, when the bottom plate 55 compacts the sludge and reaches the maximum stroke, the lifting rod 37 cannot continue to descend, causing the transmission wheel 1 32 and the bevel gear 2 31 to be locked. The bevel gear 1 22 continues to rotate along with the limit shaft 21, causing the bevel gear 1 22 to generate a downward axial force, thereby completing the motion switching process described in Example 2. Embodiment 4:

[0052] See also Figure 5 , Figure 8 as well as Fig. 9 This embodiment is further explained on the basis of the third embodiment: the bottom end of the bevel gear three 4 is fixedly connected with a bevel gear one 41, and the outer contour of the bevel gear one 41 is meshed and transmission-connected with a bevel gear two 42, and the axis of the bevel gear two 42 is fixedly connected with a positioning shaft 43, and the two ends of the positioning shaft 43 pass through and are rotatably connected to the inside of the water stop plate 1, and the middle section of the positioning shaft 43 is fixedly connected with a worm 44, and the bottom end of the worm 44 is meshed and transmission-connected with a worm wheel 45.

[0053] The fixed shaft 6 passes through the axis of the worm gear 45, and the fixed shaft 6 is rotatably connected to the guide wheels 61 at the positions on both sides of the worm gear 45, and the guide wheels 61 are fixedly connected to the worm gear 45. The outer contours of the two guide wheels 61 are meshed and transmission connected with the racks 62 located inside the water stop plate 1. The two racks 62 are staggered, and the ends of the two racks 62 pointing to the outside of the water stop plate 1 are fixedly connected to the telescopic plate 63 inside the water stop plate 1 with limited sliding connection.

[0054] The surfaces of the two telescopic plates 63 are both provided with holes for limiting the sliding of the other rack 62 . The sliding extension position of the telescopic plates 63 on the water stop plate 1 corresponds to the position of the scraper 12 .

[0055] After the support assembly is expanded to the maximum stroke, the bevel gear 22 switches position and meshes with the bevel gear 3 4. At this time, the bevel gear 3 4 and the bevel gear 1 41 rotate synchronously with the bevel gear 22. The bevel gear 1 41 further drives the bevel gear 2 42, the positioning shaft 43 and the worm 44 to rotate synchronously. At this time, the rotation of the worm 44 further drives the worm wheel 45 to move synchronously.

[0056] Since the worm gear 45 is fixedly connected to the guide wheel 61, the fixed shaft 6 provides limiting support for the worm gear 45 and the guide wheel 61, that is, the worm gear 45 further drives the guide wheel 61 to rotate. At this time, the rack 62 slides horizontally and drives the telescopic plate 63 to extend synchronously from both ends of the water stop plate 1 until the telescopic plate 63 contacts the inner walls on both sides of the waterway.

[0057] When the telescopic plate 63 contacts the inner wall of the water channel, it reaches the maximum stroke. At this time, the rack 62 and the guide wheel 61 are locked and further cause the bevel gear three 4 to be unable to rotate. Under the limiting action of the bevel gear three 4, the bevel gear one 22 tends to drop again, but at this time the switching mechanism has moved to the bottom, thereby locking the bevel gear one 22 and the limiting shaft 21. At this time, the drive motor 2 is automatically turned off to keep the device in the maximum expansion state, and the water stop plate 1 cooperates with the telescopic plate 63 to achieve the water blocking operation of the water channel.

[0058] It should be noted that when the impact of water flow causes the telescopic plate 63 to tend to shrink toward the inside of the water stop plate 1, since the transmission relationship between the worm wheel 45 and the worm 44 is self-locking, without rotating the worm 44, the worm wheel 45 cannot be rotated via the guide wheel 61 and the rack 62, that is, the positions of the guide wheel 61 and the rack 62 are locked, thereby maintaining the extension assembly in the maximum expanded state, and the telescopic plate 63 is always against the inner walls on both sides of the waterway to reduce the risk of water leakage in the gap between the waterway and the telescopic plate 63.

[0059] When it is necessary to end the water blocking operation on the waterway, start the drive motor 2 and drive the limit shaft 21 to reverse. At this time, the bevel gear 1 22 meshes with the bevel gear 3 4 and controls the extension assembly to reset. In the process of the telescopic plate 63 retracting back into the water stop plate 1, the scraper 12 fits against the outer surface of the telescopic plate 63 to scrape the silt or foreign matter adhered to the surface of the telescopic plate 63, thereby ensuring the cleanliness of the device during repeated use.

[0060] When the telescopic plate 63 is retracted back into the water stop plate 1, the extension assembly is completely reset. At this time, the water stop plate 1 limits the telescopic plate 63, causing the extension assembly to stop moving as a whole. The bevel gear three 4 is locked and causes the bevel gear one 22 to generate an upward axial force, thereby driving the switching assembly to switch upward. After the switching process is completed, the bevel gear one 22 meshes with the bevel gear two 31 and drives the support assembly as a whole to start resetting under the reverse action. After the support assembly is completely reset, the bevel gear two 31 is locked and causes the bevel gear one 22 and the limit shaft 21 to be locked. At this time, the drive motor 2 is automatically turned off to keep the device in the maximum retracted state.

[0061] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A water-stopping and anti-seepage device for water retaining construction of a hydraulic project, comprising a water-stop plate (1), a switching component, a supporting component and an extending component, characterized in that: One side of the water stop plate (1) is fixedly connected to a positioning frame (11), and the interiors of the water stop plate (1) and the positioning frame (11) are interconnected; both ends of one side of the water stop plate (1) are provided with vertical grooves for the support assembly to unfold; both sides of the water stop plate (1) are fixedly connected to scrapers (12), and the scrapers (12) correspond to the positions of the extension assemblies; The switching assembly comprises a driving motor (2) as a power source of the device and a limiting shaft (21) as an output shaft of the driving motor (2), wherein the limiting shaft (21) penetrates and extends into the interior of the positioning frame (11); The support assembly comprises a lifting mechanism drivingly connected to the switching assembly and a gripping mechanism for realizing position-limiting support of the water stop plate (1), the lifting mechanism comprising a fixed shaft (3) fixedly connected to the inside of the water stop plate (1), and the gripping mechanism comprising a support plate (5) arranged on one side of the water stop plate (1); The extension assembly comprises a transmission mechanism connected to the switching assembly and an expansion mechanism for achieving waterway blocking, the transmission mechanism comprising a bevel gear three (4) connected to the outer contour of the bottom end of the fixed shaft one (3) in a limited rotation manner, and the expansion mechanism comprises a fixed shaft two (6) fixedly connected to the inside of the water stop plate (1); A bevel gear 1 (22) is fixedly connected to the outer contour of the middle section of the limit shaft (21), and the bevel gear 1 (22) is located inside the positioning frame (11); a fixing frame (23) passes through the lower half of the limit shaft (21), and the other end of the fixing frame (23) is fixedly connected to the inner wall of the positioning frame (11); the outer contour of the limit shaft (21) located inside the fixing frame (23) passes through the limit frame (26); a positioning ring (27) is fixedly connected to the outer contour of the limit shaft (21) located in the middle section inside the limit frame (26); and a return spring (28) sleeved on the outer contour of the limit shaft (21) is provided between the upper and lower sides of the positioning ring (27) and the inner wall of the limit frame (26); The top end of the support plate (5) is penetrated by and rotatably connected to a positioning rod 1 (51), the positioning rod 1 (51) penetrates and is rotatably connected to the other end of the lifting rod (37), the bottom end of the support plate (5) is penetrated by and rotatably connected to a positioning rod 2 (52), both ends of the positioning rod 2 (52) located outside the support plate (5) are penetrated by and rotatably connected to a connecting rod (53), the other end of the connecting rod (53) is penetrated by and rotatably connected to the same positioning rod 3 (54), both ends of the positioning rod 3 (54) are penetrated by and rotatably connected to the fixing rod (38), a bottom plate (55) is fixedly connected between the connecting rods (53) located on the left and right sides of the positioning frame (11), and a plurality of rivets (56) are distributed on the outer surface of the bottom plate (55).

2. A water-stopping and anti-seepage device for water-retaining construction of a hydraulic project according to claim 1, characterized in that: A compression spring (24) is passed through the connection between the fixing frame (23) and the positioning frame (11), and one end of the compression spring (24) is fixedly connected to the inner wall of the positioning frame (11), and the other end of the compression spring (24) is fixedly connected to a positioning pin (25), and the positioning pin (25) and the outer contour inclined surface of the limiting frame (26) are mutually abutted and transmission-connected.

3. A water-stopping and anti-seepage device for water-retaining construction of a hydraulic project according to claim 1, characterized in that: A bevel gear 2 (31) is passed through the middle section of the fixed shaft 1 (3), and the bevel gear 2 (31) and the bevel gear 1 (22) are meshed with each other and are transmission-connected, the upper surface of the bevel gear 2 (31) is fixedly connected to a transmission wheel 1 (32) sleeved on the outer contour of the fixed shaft 1 (3), the bottom end of the bevel gear 2 (31) is fixedly connected to a separation ring (33) sleeved on the outer contour of the fixed shaft 1 (3), a chain (34) is meshed on the outer contour of the transmission wheel 1 (32) and is transmission-connected, and the two ends of the chain (34) are connected to the transmission wheel 1 (32). The two ends are meshed and transmission-connected with a second transmission wheel (35); a feed screw (36) is fixedly connected at the axis of the second transmission wheel (35), and the feed screw (36) is rotationally connected to the two ends inside the water stop plate (1); a lifting rod (37) is screwed to the upper half of the feed screw (36), and the lifting rod (37) is located in the vertical groove of the water stop plate (1) and extends outward; the bottom end of the feed screw (36) is rotationally connected to a fixed rod (38), and the fixed rod (38) passes through the water stop plate (1) and extends outward.

4. A water-stopping and anti-seepage device for water-retaining construction of a hydraulic project according to claim 1, characterized in that: The bottom end of the bevel gear three (4) is fixedly connected to the bevel gear one (41), and the outer contour of the bevel gear one (41) is meshed and transmission-connected with the bevel gear two (42), the axis of the bevel gear two (42) is fixedly connected to a positioning shaft (43), and the two ends of the positioning shaft (43) pass through and are rotationally connected to the inside of the water stop plate (1), the middle section of the positioning shaft (43) is fixedly connected to a worm (44), and the bottom end of the worm (44) is meshed and transmission-connected with a worm wheel (45).

5. A water-stopping and anti-seepage device for water retaining construction of a hydraulic project according to claim 1, characterized in that: The second fixed shaft (6) passes through the axis of the worm wheel (45); the second fixed shaft (6) is rotatably connected to guide wheels (61) at positions on both sides of the worm wheel (45); and the guide wheels (61) are fixedly connected to the worm wheel (45); the outer contours of the two guide wheels (61) are meshed and transmission-connected with racks (62) located inside the water stop plate (1); the two racks (62) are staggered; and the ends of the two racks (62) pointing to the outside of the water stop plate (1) are fixedly connected to a telescopic plate (63) that is limitedly slidably connected to the inside of the water stop plate (1).

6. A water-stopping and anti-seepage device for water retaining construction of a hydraulic project according to claim 5, characterized in that: The surfaces of the two telescopic plates (63) are each provided with a hole groove for limiting the sliding of the other rack (62), and the sliding extension position of the telescopic plate (63) on the water stop plate (1) corresponds to the position of the scraper (12).

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