A water gate bottom anti-seepage water stopping structure

Abstract

This utility model relates to the field of water conservancy engineering technology, and provides a seepage-proof and water-stopping structure at the bottom of a sluice gate, solving the problem of weak sealing performance of existing seepage-proof and water-stopping structures at the bottom of sluice gates. This utility model includes: a base plate, cast into the foundation of the sluice gate; a water-stopping base, located in the middle of the base plate and protruding upwards, with a continuous inverted trapezoidal groove on its top along the water flow direction; an elastic sealing strip, embedded in the inverted trapezoidal groove, with its top protruding above the groove surface; a pressure plate, covering the top of the elastic sealing strip, with its two sides bent downwards to form limiting flanges; and an anchoring component, including vertical anchor rods pre-embedded in the water-stopping base and fastening bolts penetrating the pressure plate, the bottom of the fastening bolts being threadedly connected to the anchor rods, and the top of the fastening bolts pressing the pressure plate with a disc spring assembly; the inverted trapezoidal groove, the elastic sealing strip, and the pressure plate form a three-dimensional seepage-proof layer, improving seepage resistance.

Description

Technical Field

[0001] This utility model relates to the field of water conservancy engineering technology, specifically to a seepage-proof and water-stopping structure at the bottom of a sluice gate. Background Technology

[0002] A sluice gate is a low-head hydraulic structure built on the banks of rivers, canals, reservoirs, and lakes, with the functions of blocking and releasing water. When the gate is closed, it can block floods, tides, and raise the water level to meet the needs of upstream water intake or navigation. When the gate is opened, it can release floods, drain water, flush sand, take in water, or regulate the flow according to the needs of downstream water use. A seepage-proof and water-stopping structure is used at the bottom of the sluice gate, but the existing seepage-proof and water-stopping structures still have certain defects in use.

[0003] Chinese Patent Publication No. CN219886720U discloses a seepage-proof and water-stopping structure for the bottom of a sluice gate. This utility model uses a sealing sleeve to seal the connection between the base frame and the gate, thereby ensuring the sealing performance of the bottom of the gate. The spring force can drive the first connecting plate to move inside the mounting box, so that the sealing sleeve can contact the connection of the gate, thereby improving the sealing performance of the sealing sleeve for the bottom of the gate and making it convenient for workers to use.

[0004] This invention improves the sealing performance by making the sealing sleeve fit tightly against the bottom of the gate, but gaps may still exist that allow water to flow through, so the sealing performance is still not strong enough. Utility Model Content

[0005] Therefore, in order to address the above problems, this utility model provides a seepage-proof and water-stopping structure at the bottom of a sluice gate, which solves the problem of weak sealing performance of existing seepage-proof and water-stopping structures at the bottom of sluice gates.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0007] A seepage-proof and water-stopping structure at the bottom of a sluice gate includes:

[0008] The base slab is cast onto the foundation of the sluice gate.

[0009] The water-stopping base is located in the middle of the base plate and protrudes upwards. A continuous inverted trapezoidal groove is opened on its top along the direction of water flow.

[0010] An elastic sealing strip is embedded in the inverted trapezoidal groove, with its top protruding above the surface of the groove.

[0011] The pressure plate covers the top of the elastic sealing strip, with its two sides bent downwards to form limiting flanges;

[0012] The anchoring components include vertical anchor rods pre-embedded in the water-stop base and fastening bolts penetrating the pressure plate. The bottom of the fastening bolts is threadedly connected to the anchor rods, and the top of the fastening bolts is pressed against the pressure plate by a disc spring assembly.

[0013] Furthermore, the inclined sidewall of the groove forms an angle of 55°-65° with the horizontal plane, and the groove depth is 0.6-0.8 times the thickness of the elastic sealing strip.

[0014] Furthermore, the bottom of the elastic sealing strip is provided with a dovetail-shaped friction-increasing protrusion, and the bottom surface of the groove is provided with a matching dovetail-shaped slot.

[0015] Furthermore, a 2-5mm gap is formed between the limiting flange of the pressure plate and the side wall of the groove, and the height of the limiting flange is 1 / 3-1 / 2 of the groove depth.

[0016] Furthermore, the disc spring assembly is composed of at least two layers of disc springs stacked together, and its pre-compression is adjusted by a torque control nut.

[0017] Furthermore, the lower end of the vertical anchor rod is provided with an enlarged diameter anchor head, the diameter of which is twice the diameter of the anchor rod.

[0018] Furthermore, the surface of the pressure plate is provided with cross reinforcing ribs, the height of which is 0.3-0.6 times the plate thickness.

[0019] Furthermore, the cross reinforcing ribs are provided on the lower surface of the pressure plate, and the cross reinforcing ribs are integrally formed with the pressure plate.

[0020] Furthermore, it also includes a protective cover that covers the outside of the fastening bolts and disc spring assembly.

[0021] Compared with the prior art, the beneficial effects of this utility model are:

[0022] This invention forms a three-dimensional anti-seepage layer by using an inverted trapezoidal groove, an elastic sealing strip, and a pressure plate to improve seepage resistance. The disc spring assembly provides continuous clamping force to compensate for foundation settlement. The threaded connection between the pre-embedded vertical anchor rod and the bolt, combined with the disc spring pre-compression, increases the connection pull-out resistance. The mechanical constraint of the elastic sealing strip by the limiting flange solves the problem of sealing strip displacement under high-pressure water. Attached Figure Description

[0023] Figure 1 This is a cross-sectional structural diagram of an embodiment of the present utility model;

[0024] Figure 2 for Figure 1 Enlarged structural diagram at point A in the middle;

[0025] Figure 3 This is a schematic diagram of the cross-reinforcing rib structure of an embodiment of this utility model.

[0026] Explanation of icon numbers:

[0027] Base plate 1;

[0028] Water-stop base 2; groove 21; slot 211;

[0029] 3. Elastic sealing strip; 31. Friction-increasing convex strip;

[0030] Pressure plate 4; limiting flange 41; cross reinforcing ribs 42;

[0031] Anchoring component 5; Anchor bolt 51; Expanded diameter anchor head 511; Fastening bolt 52; Disc spring assembly 53;

[0032] Protective shield 6. Detailed Implementation

[0033] The following will describe the implementation of this utility model in detail with reference to specific embodiments, so that the process of how this utility model uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0034] Example:

[0035] like Figures 1 to 3 As shown, a seepage-proof and water-stopping structure at the bottom of a sluice gate includes: a base plate 1, cast on the foundation of the sluice gate; a water-stopping base 2, located in the middle of the base plate 1 and protruding upward, with a continuous inverted trapezoidal groove 21 on its top along the water flow direction; an elastic sealing strip 3, embedded in the inverted trapezoidal groove 21, with its top protruding above the surface of the groove 21; a pressure plate 4, covering the top of the elastic sealing strip 3, with its two sides bent downward to form limiting flanges 41; and an anchoring component 5, including a vertical anchor rod 51 pre-embedded in the water-stopping base 2 and a fastening bolt 52 penetrating the pressure plate 4, the bottom of the fastening bolt 52 being threadedly connected to the anchor rod 51, and the top of the fastening bolt 52 being pressed against the pressure plate 4 by a disc spring assembly 53.

[0036] A three-dimensional anti-seepage layer is formed by the inverted trapezoidal groove 21, the elastic sealing strip 3 and the pressure plate 4 to improve the anti-seepage pressure. The disc spring group 53 provides continuous clamping force to compensate for foundation settlement. The threaded connection of the pre-embedded vertical anchor rod 51 and the bolt 52, together with the disc spring pre-compression, increases the connection pull-out resistance. The limit flange 41 mechanically constrains the elastic sealing strip 3 to solve the problem of sealing strip displacement under high pressure water.

[0037] The inclined sidewall of the groove 21 forms an angle of 60° with the horizontal plane, and the groove depth is 0.6 times the thickness of the elastic sealing strip 3; the inclination angle decomposes the lateral water pressure into the clamping force of the elastic sealing strip 3, reducing shear deformation.

[0038] The bottom of the elastic sealing strip 3 is provided with a dovetail-shaped friction-increasing protrusion 31, and the bottom surface of the groove 21 is provided with a matching dovetail-shaped slot 211. The dovetail-shaped friction-increasing protrusion 31 and the dovetail-shaped slot 211 are mechanically interlocked, which improves the resistance to horizontal shear force, eliminates the fretting wear of the elastic sealing strip 3, increases the fatigue life of the expansion and contraction cycle, and eliminates the maintenance process of periodically resetting the sealing strip in the traditional structure.

[0039] A 2-5mm gap is formed between the limiting flange 41 of the pressure plate 4 and the side wall of the groove 21. The height of the limiting flange 41 is 1 / 3-1 / 2 of the depth of the groove 21. The gap is to facilitate the placement of the pressure plate on the water-stop base 2. It can vary within the range of 2-5mm depending on the specific construction situation, and is not specifically limited. The height of the limiting flange 41 is the same.

[0040] The disc spring assembly 53 is composed of two layers of disc springs stacked together, and its pre-compression is adjusted by the torque control nut. The stacked disc springs provide nonlinear pre-tightening force, and the torque nut adjustment compensates for the creep of the anchor rod 51, which can stabilize the sealing pressure for a long time.

[0041] The lower end of the vertical anchor rod 51 is provided with an enlarged diameter anchor head 511, the diameter of which is twice the diameter of the anchor rod 51. The enlarged diameter anchor head 511 can adapt to different foundations such as sand and soft rock, and reduce stress concentration in the anchoring section.

[0042] The surface of the pressure plate 4 is provided with cross reinforcing ribs 42, the height of which is 0.3 times the thickness of the plate; the cross reinforcing ribs 42 are provided on the lower surface of the pressure plate and are integrally formed with the pressure plate 4.

[0043] It also includes a protective cover 6, which covers the outside of the fastening bolt 52 and the disc spring assembly 53. The protective cover 6 is used to block contact with corrosive media and extend the service life of the components.

[0044] Although the present invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims, and all such changes shall be within the scope of protection of the present invention.

Claims

1. A water gate bottom anti-seepage waterproof structure, characterized in that, include: The base slab is cast onto the foundation of the sluice gate. The water-stopping base is located in the middle of the base plate and protrudes upwards. A continuous inverted trapezoidal groove is opened on its top along the direction of water flow. An elastic sealing strip is embedded in the inverted trapezoidal groove, with its top protruding above the surface of the groove. The pressure plate covers the top of the elastic sealing strip, with its two sides bent downwards to form limiting flanges; The anchoring components include vertical anchor rods pre-embedded in the water-stop base and fastening bolts penetrating the pressure plate. The bottom of the fastening bolts is threadedly connected to the anchor rods, and the top of the fastening bolts is pressed against the pressure plate by a disc spring assembly.

2. The water lock bottom anti-seepage and water-stopping structure according to claim 1, characterized in that: The inclined sidewall of the groove forms an angle of 55°-65° with the horizontal plane, and the groove depth is 0.6-0.8 times the thickness of the elastic sealing strip.

3. The water lock bottom anti-seepage and water-stopping structure according to claim 1, characterized in that: The bottom of the elastic sealing strip is provided with a dovetail-shaped friction-increasing protrusion, and the bottom surface of the groove is provided with a matching dovetail-shaped slot.

4. The water lock bottom anti-seepage and water-stopping structure according to claim 1, characterized in that: A 2-5mm gap is formed between the limiting flange of the pressure plate and the side wall of the groove, and the height of the limiting flange is 1 / 3-1 / 2 of the groove depth.

5. The water lock bottom anti-seepage and water-stopping structure according to claim 1, characterized in that: The disc spring assembly consists of at least two layers of disc springs stacked together, and its pre-compression is adjusted by a torque control nut.

6. The seepage-proof and water-stopping structure at the bottom of a sluice gate according to claim 1, characterized in that: The lower end of the vertical anchor rod is provided with an enlarged diameter anchor head, the diameter of which is twice the diameter of the anchor rod.

7. The seepage-proof and water-stopping structure at the bottom of a sluice gate according to claim 1, characterized in that: The surface of the pressure plate is provided with cross reinforcing ribs, and the height of the cross reinforcing ribs is 0.3-0.6 times the thickness of the plate.

8. The seepage-proof and water-stopping structure at the bottom of a sluice gate according to claim 1, characterized in that: Cross reinforcing ribs are provided on the lower surface of the pressure plate, and the cross reinforcing ribs are integrally formed with the pressure plate.

9. The seepage-proof and water-stopping structure at the bottom of a sluice gate according to claim 1, characterized in that: It also includes a protective cover that covers the outside of the fastening bolts and disc spring assembly.

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