Aramid fabric reinforced rubber dam

Abstract

The utility model discloses a kind of aramid fabric reinforced rubber dams, belong to the technical field of hydraulic engineering.The dam includes dam body, and the dam body is by the reinforcing framework layer of outer rubber layer, inner rubber layer and aramid fabric composition.Dam still includes the support mechanism of the protection mechanism and backwater surface of outer rubber layer water surface, and protection mechanism includes fixed frame one and fixed frame two fixed on dam body, protection plate is slidably connected on fixed frame one, and respectively set on fixed frame two and protection plate inclined block one and inclined block two, convert water flow horizontal thrust into vertical force of driving protection plate lifting.The utility model passes through setting the protection mechanism and multistage buffer support mechanism that can be self-adapting lifting with water level, solve the problem that existing rubber dam outer rubber layer is vulnerable to impact wear, dam body is prone to stress concentration, realize the initiative protection and flexible support to dam body, significantly improve the impact resistance of dam.

Description

Technical Field

[0001] This utility model relates to the field of water conservancy engineering technology, and in particular to an aramid fabric reinforced rubber dam. Background Technology

[0002] Rubber dams, as a common type of hydraulic engineering structure, are widely used in irrigation, power generation, flood control, and landscaping due to their advantages such as simple structure, low cost, convenient construction, and strong adaptability to foundations. Traditional rubber dams typically use canvas or nylon fabric as the skeleton material to withstand water pressure.

[0003] With the development of materials science, in order to improve the overall strength and service life of the outer rubber layer, the industry has begun to use aramid fabrics with superior performance as the reinforcing skeleton layer. Aramid fabrics, with their high strength, high modulus, tear resistance, and fatigue resistance, have indeed fundamentally enhanced the inherent load-bearing capacity of rubber dams, enabling them to withstand greater water pressure and significantly improving the structural safety of the outer rubber layer itself.

[0004] However, while existing technologies have improved the strength of the internal framework of the outer adhesive layer, they have overlooked a crucial issue: no matter how robust the internal framework is, the outer adhesive layer, as the interface directly in contact with the water flow, is constantly exposed to the harsh natural environment. In actual operation, the mud, sand, and rocks carried by the water flow, as well as trees, debris floating during the flood season and even ice blocks in winter, will continuously impact, scratch, and wear the outer adhesive layer.

[0005] This continuous external physical damage leads to premature scratches, aging, and breakage on the surface of the outer adhesive layer. This not only affects the aesthetics and sealing performance of the dam, but more seriously, weakening the protective function of the outer adhesive layer exposes the inner core aramid fabric reinforcement layer, making it vulnerable to ultraviolet radiation, chemical corrosion, and physical damage. Ultimately, this negates the advantages of its high-performance materials and affects the long-term safe and stable operation of the entire dam. Current technologies generally lack an effective structure capable of actively protecting the outer adhesive layer and resisting external impacts and abrasion.

[0006] Therefore, this utility model proposes an aramid fabric-reinforced rubber dam to address the shortcomings of the prior art. Utility Model Content

[0007] In the existing technology, the water-facing surface of an aramid fabric-reinforced rubber dam is directly exposed to the impact and abrasion of water flow and floating objects, which easily leads to premature damage to the outer rubber layer, thereby affecting the long-term performance of the internal reinforcing skeleton layer and the overall operational reliability of the dam. The present invention aims to provide an aramid fabric-reinforced rubber dam with an improved structure that can effectively solve the above problems.

[0008] This utility model provides an aramid fabric reinforced rubber dam, including a dam body, which includes an outer rubber layer, an inner rubber layer, and a reinforcing skeleton layer made of aramid fabric sandwiched between the outer rubber layer and the inner rubber layer; it also includes a protective mechanism disposed on the water-facing side of the outer rubber layer.

[0009] The protective mechanism includes a fixed frame 1 and a fixed frame 2 that are fixed to each other on the outer wall of the dam, a protective plate that is slidably connected to the outer wall of the fixed frame 1, an inclined block 1 that is slidably connected to the inner side of the fixed frame 2, and an inclined block 2 that is fixed to the bottom of the protective plate.

[0010] Furthermore, inclined block one and inclined block two are combined through mutually compatible guide inclined surfaces set on their respective outer walls, and these two guide inclined surfaces slide in contact. When inclined block one moves along fixed frame two under the thrust of water flow, its guide inclined surface pushes the guide inclined surface of inclined block two. Through this inclined surface transmission method, the horizontal thrust acting on inclined block one is efficiently converted into a vertical driving force that drives the protective plate to rise and fall synchronously, thereby realizing the adaptive adjustment of the protective plate position.

[0011] Preferably, an aramid fabric reinforced rubber dam further includes a support mechanism disposed on the back surface of the outer rubber layer; the support mechanism includes a limiting frame fixed to the outer wall of the dam body, a rotating seat two slidably connected to the limiting frame, a rotating seat one fixed to the outer wall of the outer rubber layer, and rotating arms rotatably connected to the rotating seat one and the rotating seat two at both ends respectively, forming a complete force transmission and dispersion device.

[0012] Preferably, the support mechanism further includes an elastic ring attached to the outer wall of the outer adhesive layer, and an elastic pad sandwiched between the elastic ring and the outer adhesive layer. The elastic ring and the elastic pad can work together to generate elastic deformation, serving as a first-stage buffer device to initially absorb and weaken the impact energy of the water flow.

[0013] Preferably, the inner wall of the limiting frame is provided with a sliding groove, the rotating seat 2 is fitted into the sliding groove and can slide along the length direction of the sliding groove. The limiting frame accurately guides and restricts the movement trajectory of the rotating seat 2 through the sliding groove structure, effectively preventing it from shifting laterally under complex forces.

[0014] Preferably, the support mechanism further includes a limiting component; the limiting component includes a limiting block fixed to the outer wall of the limiting frame, and a limiting rod whose end is connected to the rotating seat two and is slidably adapted to the outer wall of the limiting block, the two working together to constrain the sliding behavior of the rotating seat two.

[0015] Preferably, the protective plate is slidably connected up and down along the outer wall of the fixed frame, so that its protective coverage can accurately adapt to the real-time rise and fall of the water level, thereby achieving all-time, blind-spot-free protection of the water-facing surface of the outer adhesive layer.

[0016] Preferably, the displacement of the inclined block 1 will automatically change with the increase or decrease of the water flow thrust caused by the change in water level. This design enables the lifting range of the protective plate to be precisely matched with the water level, realizing the automation of the protective height adjustment without any external energy or manual intervention.

[0017] Preferably, during the sliding process of the limiting rod along the outer wall of the limiting block, the impact energy is further dispersed and consumed through the sliding friction generated between the two contact surfaces, while forming a flexible constraint on the sliding speed of the rotating seat, thereby improving the stability and damping effect of the entire support mechanism.

[0018] This utility model has the following beneficial effects: 1. This utility model solves the problems of existing rubber dams, such as their simple structure, reliance on the outer rubber layer itself to passively withstand impacts, and susceptibility to damage due to wear and stress concentration, by setting a protective mechanism on the water-facing side of the outer rubber layer and a supporting mechanism on the water-repellent side, and working in conjunction with the aramid fabric-reinforced outer rubber layer. It achieves dual protection of the outer rubber layer through active protection and flexible support, significantly improving the dam's impact resistance, durability, and operational reliability.

[0019] 2. This utility model, by setting up a protective mechanism composed of a fixed frame, a protective plate and an inclined block, uses the thrust of water flow to drive the protective plate to automatically rise and fall with the water level, which solves the problem that the water-facing surface of traditional rubber dams is directly exposed to the impact of water flow and debris, which easily leads to rapid wear and aging of the outer rubber layer surface. It achieves the technical effect of providing dynamic adaptability protection for the water-facing surface of the outer rubber layer at all water levels, effectively isolating external damage sources and extending the service life of the outer rubber layer.

[0020] 3. This utility model solves the problem of stress concentration, material fatigue, or even tearing, when the impact force of water flow directly acts on the outer rubber layer by setting up a multi-level buffer support mechanism consisting of an elastic ring, an elastic pad, a rotating arm, and a limiting component. It achieves the technical effect of effectively absorbing and evenly dispersing the impact force to the dam body, avoiding local overload of the outer rubber layer, and ensuring the long-term stability of the dam structure. Attached Figure Description

[0021] Figure 1 This is a three-dimensional schematic diagram of an aramid fabric-reinforced rubber dam proposed in this utility model; Figure 2 This is a schematic diagram of the reinforcing skeleton layer of an aramid fabric-reinforced rubber dam proposed in this utility model. Figure 3 This is a schematic diagram of the structure of the outer rubber layer of an aramid fabric-reinforced rubber dam proposed in this utility model; Figure 4 This is a schematic diagram of the structure of a limiting frame for an aramid fabric-reinforced rubber dam proposed in this utility model; Figure 5 This is a schematic diagram of the structure of a fixing frame 2 for an aramid fabric reinforced rubber dam proposed in this utility model; Figure 6 This is a schematic diagram of the inclined block of an aramid fabric-reinforced rubber dam proposed in this utility model; Figure 7 This is a schematic diagram of the inclined block two of an aramid fabric reinforced rubber dam proposed in this utility model.

[0022] Legend: 1. Dam body; 2. Outer rubber layer; 3. Reinforcing skeleton layer; 4. Inner rubber layer; 5. Support mechanism; 51. Elastic ring; 52. Elastic pad; 53. Rotating seat one; 54. Rotating arm; 55. Rotating seat two; 56. Limiting frame; 57. Limiting component; 571. Limiting rod; 572. Limiting block; 6. Protective mechanism; 61. Fixing frame one; 62. Protective plate; 63. Fixing frame two; 64. Inclined block one; 65. Inclined block two. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. Example

[0024] Reference Figures 1 to 7 This utility model provides an aramid fabric-reinforced rubber dam, which aims to solve the problems of fatigue damage, accelerated aging, and leakage or damage caused by local stress concentration in the outer rubber layer of existing rubber dams under the impact and wear of complex water flow and floating objects.

[0025] An aramid fabric-reinforced rubber dam includes a dam body 1, whose internal structure comprises an outer rubber layer 2, an inner rubber layer 4, and a reinforcing skeleton layer 3 sandwiched between the outer rubber layer 2 and the inner rubber layer 4. The outer rubber layer 2 is the external protective layer in direct contact with the water, possessing excellent wear resistance, impact resistance, and weather resistance. The inner rubber layer 4 is located inside the reinforcing skeleton layer 3, providing internal sealing and protection. The reinforcing skeleton layer 3, as the core load-bearing skeleton of the outer rubber layer 2, is composed of high-strength, tear-resistant, and aging-resistant aramid fabric. Its excellent mechanical properties significantly enhance the overall load-bearing capacity and tear resistance of the outer rubber layer 2, forming the basis for its ability to withstand enormous water pressure and external impacts.

[0026] To further enhance the protective capability and stability of an aramid fabric-reinforced rubber dam, this embodiment adds a protective mechanism 6 to the upstream side of the dam body 1 and a support mechanism 5 to the downstream side. The protective mechanism 6 and the support mechanism 5 work together to achieve comprehensive protection of the outer rubber layer 2.

[0027] The protective mechanism 6 includes a first fixed frame 61 and a second fixed frame 63, which are fixed to the outer wall of the outer adhesive layer 2. The first fixed frame 61 and the second fixed frame 63 form the basic framework that provides support and guidance. The protective plate 62 is slidably connected to the outer wall of the first fixed frame 61. The protective plate 62 is the component that directly bears the impact and friction of the water flow, and its up-and-down sliding can cover the water-facing surface of the outer adhesive layer 2 at different water levels. The first inclined block 64 is slidably connected to the inner side of the second fixed frame 63. The first inclined block 64 is a key component for realizing water level sensing and mechanical conversion, and its position and movement are affected by the thrust of the water flow. The second inclined block 65 is fixed to the bottom of the protective plate 62. The second inclined block 65 acts as the other half of the conversion component that cooperates with the first inclined block 64, transmitting its movement to the protective plate 62.

[0028] The outer walls of inclined blocks 64 and 65 are equipped with matching guide slopes, which slide in close contact. When the water level rises, the water flow acts on inclined block 64, generating a horizontal thrust that pushes it to move towards inclined block 65 along the interior of fixed frame 63. Because the guide slopes of inclined blocks 64 and 65 are in close contact, the horizontal movement of inclined block 64 efficiently converts the horizontal thrust generated by the water flow into an upward vertical driving force, which acts on inclined block 65. This vertical driving force then causes the protective plate 62, fixed to inclined block 65, to slide smoothly upward along the outer wall of fixed frame 61. Through this linkage mechanism, the protective plate 62 can automatically track the rising water level, always covering the area of ​​the outer adhesive layer 2 exposed to the water, effectively preventing damage to the unprotected portion from high-water flow and debris. When the water level drops, the thrust of the water flow decreases. Under the influence of its own weight and the reduced thrust of the water flow, the inclined block 64 moves back to its original position along the fixed frame 63 in a direction away from the inclined block 65. At the same time, the inclined surface guides the inclined block 65 and the protective plate 62 to slide downwards in sync, ensuring that the protective plate 62 always adheres to the water-facing surface of the outer adhesive layer 2 corresponding to the current water level, continuously providing comprehensive protection and preventing stones and debris from scraping and impacting the outer adhesive layer 2 when the water level is low. It also continuously disperses the impact force of the water flow through its streamlined outer wall.

[0029] Support mechanism 5 is located on the backwater side of outer adhesive layer 2. Its main function is to absorb and evenly disperse the impact force generated by water flow on outer adhesive layer 2, prevent local stress concentration, and thus protect the long-term stability of outer adhesive layer 2 structure. Support mechanism 5 includes a limiting frame 56 fixed to the outer wall of dam body 1, which provides fixed support points and sliding guide rails. Rotating seat 2 55 is slidably connected inside the limiting frame 56. Rotating seat 2 55 is a force transmission node, and its sliding characteristics allow the outer adhesive layer 2 to make appropriate displacement when subjected to force. Rotating seat 1 53 is fixed to the outer wall of outer adhesive layer 2, serving as another force transmission node and tightly connected to outer adhesive layer 2. The two ends of rotating arm 54 are rotatably connected to rotating seat 1 53 and rotating seat 2 55, respectively. Rotating arm 54 is a flexible connecting component for transmitting and decomposing impact force between rotating seat 1 53 and rotating seat 2 55.

[0030] When the water flow impacts the outer adhesive layer 2, the impact force first acts on the outer adhesive layer 2 and is then transmitted through it to the rotating seat 53 fixed thereon. Under the action of the impact force, the rotating seat 53 drives the rotating arm 54 to rotate around itself, and pulls the rotating seat 55 to slide smoothly along the inner groove of the limiting frame 56. This linkage method effectively disperses the impact force of the water flow, preventing the impact force from being directly concentrated at a certain point on the outer adhesive layer 2. Instead, it is evenly transmitted to the dam body 1 through the structure of the support mechanism 5, thereby protecting the outer adhesive layer 2 from local stress damage and ensuring the long-term stability of the dam structure.

[0031] The support mechanism 5 also includes an elastic ring 51 attached to the outer wall of the outer adhesive layer 2, and an elastic pad 52 sandwiched between the elastic ring 51 and the outer adhesive layer 2. The elastic ring 51 has a ring structure and can undergo elastic deformation when impacted, its function being to initially absorb the impact energy of the water flow. The elastic pad 52 is a finer, more flexible layer, its function being to tightly fill the tiny gap between the elastic ring 51 and the outer adhesive layer 2, preventing localized stress concentration caused by the elastic ring 51 directly and rigidly contacting the outer adhesive layer 2 or by uneven stress on its own ring structure, ensuring that the impact force can be more evenly transmitted to the subsequent structure through the coordinated deformation of the elastic ring 51 and the elastic pad 52.

[0032] The support mechanism 5 also includes a limiting component 57, which includes a limiting block 572 fixed to the outer wall of the limiting frame 56 and a limiting rod 571 connected to the end of the rotating seat 55. The limiting rod 571 is slidably adapted to the outer wall of the limiting block 572. In the assembled state, when the rotating seat 55 slides along the groove of the limiting frame 56, the limiting rod 571 connected to it will slide synchronously along the outer wall of the limiting block 572. This sliding fit structure of the limiting rod 571 and the limiting block 572 ensures that the sliding process of the rotating seat 55 is flexibly constrained. On the one hand, it further disperses the locally concentrated impact force through sliding friction, and on the other hand, it prevents the rotating seat 55 from sliding violently due to excessive impact force, thereby improving the stability and impact resistance of the entire support mechanism 5.

[0033] The inner wall of the limiting frame 56 is specially provided with a sliding groove, and the rotating seat 55 is fitted into the sliding groove and can slide along the length of the sliding groove. The function of the sliding groove structure is to provide precise guidance and limitation for the movement of the rotating seat 55, effectively preventing the support mechanism 5 from shifting laterally under complex stress conditions, and ensuring that the force transmission path is always stable and controllable.

[0034] In a preferred embodiment, the protective plate 62 is slidably connected up and down along the outer wall of the fixed frame 61. This connection method allows its coverage area to accurately follow the rise and fall of the water level, always providing effective shielding for the outer rubber layer 2 on the water-facing side. The displacement of the inclined block 64 changes accordingly with the increase or decrease of the water flow thrust caused by the change in water level. This ensures that the rise and fall of the protective plate 62 can be precisely matched with the water level height, achieving adaptive protection across all water levels. During the sliding process of the limiting rod 571 along the outer wall of the limiting block 572, the sliding friction generated between the two contact surfaces further consumes and disperses the impact energy. At the same time, the limiting block 572 applies a flexible constraint to the sliding of the limiting rod 571, effectively preventing the sliding speed of the rotating seat 55 from being too fast, and enhancing the damping effect and stability of the entire mechanism.

[0035] The implementation principle of this application embodiment is as follows: An aramid fabric reinforced rubber dam is based on "material reinforcement as the core, dual-mechanism collaboration as the guarantee, and water level adaptation as the key". Relying on the high strength, tear resistance, and aging resistance of aramid fabric, an integrated structure of "reinforced skeleton + functional outer layer + linkage protection" is constructed. The aramid fabric reinforcement skeleton layer 3 serves as the core load-bearing skeleton, which is tightly composited with the inner rubber layer 4 and the outer rubber layer 2. It works in conjunction with the protection mechanism 6 on the water-facing side and the support mechanism 5 on the back side, and adapts to the rise and fall of water level to achieve dynamic protection. Among them, the protection mechanism 6 consists of a fixed frame 61, a protective plate 62, a fixed frame 63, an inclined block 64, and an inclined block 65; the support mechanism 5 includes an elastic ring 51, an elastic pad 52, a rotating seat 53, a rotating arm 54, a rotating seat 55, a limiting frame 56, and a limiting component 57. The structure not only enhances the impact and wear resistance of the outer adhesive layer 2 itself from the material level, but also disperses the water flow load and avoids local stress concentration through the linkage of the dual mechanisms, ultimately achieving the core goal of the dam to retain water stably for a long time and resist damage from complex water flow environments.

[0036] The support mechanism 5 is pre-assembled on the backwater side of an aramid fabric reinforced rubber dam. Its elastic ring 51 and elastic pad 52 are tightly fitted to the inner side of the outer rubber layer 2, and the elastic pad 52 is sandwiched between the elastic ring 51 and the outer rubber layer 2 to form a flexible transition layer. The rotating seat 1 53 is fixed to the outer wall of the outer rubber layer 2. The two ends of the rotating arm 54 are respectively hinged to the rotating seat 1 53 and the rotating seat 2 55. The rotating seat 2 55 is embedded in the sliding groove of the limiting frame 56 and can slide along its inner wall. Multiple limiting frames 56 are fixed to the outer wall of the outer rubber layer 2. The limiting block 572 of the limiting component 57 is fixed to the outer wall of the limiting frame 56. One end of the limiting rod 571 is connected to the rotating seat 2 55, and the other end is slidably adapted to the limiting block 572, together forming a complete force transmission structure. When the water flow impacts the outer adhesive layer 2, the impact force first acts on the elastic ring 51 and the elastic pad 52: the elastic ring 51 initially absorbs the impact energy through the elastic deformation of its own annular structure, while the elastic pad 52, with its more delicate flexible deformation, tightly fills the tiny gap between the elastic ring 51 and the outer adhesive layer 2, preventing local stress concentration caused by the elastic ring 51 directly and rigidly contacting the outer adhesive layer 2 or by uneven force on its own annular structure. This prevents the contact point of the elastic ring 51 from cracking due to excessive stress, and also prevents the outer adhesive layer 2 from being rigidly squeezed by the elastic ring 51, causing local damage. The impact force is evenly transmitted to the subsequent structure through the coordinated deformation of the two, initially weakening the pressure of the water flow on the surface of the dam. The remaining impact force that is not completely buffered is transmitted to the rotating seat 53 through the outer adhesive layer 2, causing the rotating arm 54 to swing adaptively around the rotating seat 53. 54 pulls the rotating seat 55 at the other end to slide smoothly along the inner wall of the limiting frame 56. The limiting frame 56 restricts the movement trajectory of the rotating seat 55 through the sliding groove to prevent the support mechanism 5 from shifting laterally. During this process, the limiting rod 571 connected to the rotating seat 55 slides synchronously along the outer wall of the limiting block 572 with its own elasticity. On the one hand, it further disperses the locally concentrated impact force through sliding friction. On the other hand, the matching relationship between the two forms a flexible constraint on the sliding speed of the rotating seat 55, preventing it from sliding violently due to excessive impact force. Finally, the support mechanism 5 evenly transmits the impact force of the water flow to the overall structure of the outer adhesive layer 2, which not only effectively resists the direct impact of the water flow on the outer adhesive layer 2, but also protects the outer adhesive layer 2 and the elastic ring 51 from local stress damage, ensuring the long-term stability of the dam structure and avoiding leakage or damage caused by impact deformation.

[0037] The protective mechanism 6 is located on the water-facing side of the outer rubber layer 2. The first fixed frame 61 and the second fixed frame 63 are fixed to the outer wall of the outer rubber layer 2. The protective plate 62 is slidably connected to the outer wall of the first fixed frame 61 and can slide up and down along it. The first inclined block 64 is movably embedded in the inner side of the second fixed frame 63. The second inclined block 65 is fixed to the bottom of the protective plate 62. The outer walls of the first inclined block 64 and the second inclined block 65 are set as mutually compatible guide inclined surfaces, forming a complete linkage protective structure. As the water level rises, the water flow coverage expands and the impact force increases simultaneously. The stronger water flow thrust acts on the inclined block 64, pushing it to move horizontally along the fixed frame 63 towards the inclined block 65, and the displacement increases with the rise in water level. At this time, the guide slope of the inclined block 64 slides in contact with the guide slope of the inclined block 65, converting the greater horizontal thrust into a stronger vertical upward driving force, causing the inclined block 65 to move upward simultaneously with a greater amplitude, thereby pulling the protective plate 62 to slide smoothly up to a higher position along the outer wall of the fixed frame 61, so that the protective plate 62 completely covers the newly exposed area of ​​the outer adhesive layer 2 on the water-facing side after the water level rises, avoiding damage to the unprotected part caused by high water flow and debris. As the water level drops, the water flow coverage area shrinks and the thrust weakens. Under the combined effect of its own weight and the reduced thrust of the water flow, the inclined block 64 moves horizontally away from the inclined block 65 along the fixed frame 63. During this process, the guiding inclined surface of the inclined block 64 pushes the inclined block 65 in the opposite direction, causing it to move down synchronously. This, in turn, pulls the protective plate 62 to slide smoothly down the outer wall of the fixed frame 61, always adhering to the water-facing surface of the outer rubber layer 2 corresponding to the current water level. This not only prevents the protective plate 62 from creating a gap in the protection below due to its excessive position, but also accurately blocks the scraping and impact of stones and debris on the outer rubber layer 2 in the low water flow. At the same time, the streamlined outer wall of the protective plate 62 continuously disperses the impact force of the water flow, reducing the intensity of direct water scouring, and always maintaining full water level adaptation protection for the outer rubber layer 2, ensuring the structural integrity of the dam's water-facing surface.

[0038] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An aramid fabric reinforced rubber dam, comprising a dam body (1), the dam body (1) comprising an outer rubber layer (2), an inner rubber layer (4) and a reinforcing skeleton layer (3) made of aramid fabric sandwiched between the outer rubber layer (2) and the inner rubber layer (4). Its features are, It also includes a protective mechanism (6) disposed on the water-facing side of the outer adhesive layer (2); The protective mechanism (6) includes a fixed frame one (61) and a fixed frame two (63) that are fixed to each other on the outer wall of the dam body (1), a protective plate (62) that is slidably connected to the outer wall of the fixed frame one (61), an inclined block one (64) that is slidably connected to the inner side of the fixed frame two (63), and an inclined block two (65) that is fixed to the bottom of the protective plate (62). The guide inclined surface of the inclined block one (64) slides in contact with the guide inclined surface of the inclined block two (65). When the inclined block one (64) moves along the fixed frame two (63) under the action of water flow thrust, it pushes the guide inclined surface of the inclined block two (65) through its guide inclined surface, thereby converting the horizontal thrust into a vertical driving force, and driving the protective plate (62) to rise and fall synchronously.

2. The aramid fabric-reinforced rubber dam according to claim 1, characterized in that, It also includes a support mechanism (5) disposed on the backwater side of the outer adhesive layer (2); the support mechanism (5) includes a limiting frame (56) fixed to the outer wall of the dam body (1), a rotating seat two (55) slidably connected to the limiting frame (56), a rotating seat one (53) fixed to the outer wall of the outer adhesive layer (2), and a rotating arm (54) rotatably connected to the rotating seat one (53) and the rotating seat two (55) at both ends respectively.

3. The aramid fabric-reinforced rubber dam according to claim 2, characterized in that, The support mechanism (5) further includes an elastic ring (51) attached to the outer wall of the outer adhesive layer (2) and an elastic pad (52) sandwiched between the elastic ring (51) and the outer adhesive layer (2). The elastic ring (51) and the elastic pad (52) are used to deform together to initially absorb the impact energy of the water flow.

4. The aramid fabric-reinforced rubber dam according to claim 2, characterized in that, The inner wall of the limiting frame (56) is provided with a sliding groove, the rotating seat (55) is fitted into the sliding groove and can slide along the length direction of the sliding groove. The limiting frame (56) restricts the movement trajectory of the rotating seat (55) through the sliding groove.

5. The aramid fabric-reinforced rubber dam according to claim 2, characterized in that, The support mechanism (5) further includes a limiting component (57); the limiting component (57) includes a limiting block (572) fixed to the outer wall of the limiting frame (56), and a limiting rod (571) whose end is connected to the rotating seat (55) and is slidably adapted to the outer wall of the limiting block (572).

6. The aramid fabric-reinforced rubber dam according to claim 1, characterized in that, The protective plate (62) slides up and down along the outer wall of the fixed frame (61) so that its coverage area can adapt to the rise and fall of the water level.

7. The aramid fabric-reinforced rubber dam according to claim 1, characterized in that, The displacement of the inclined block (64) changes with the increase or decrease of the water flow thrust caused by the change of water level, thereby realizing the automatic adjustment of the lifting range of the protective plate (62).

8. The aramid fabric-reinforced rubber dam according to claim 5, characterized in that, During the sliding process along the outer wall of the limiting block (572), the limiting rod (571) further disperses the impact force through sliding friction and forms a flexible constraint on the sliding speed of the rotating seat (55).

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