Openable and closable bridge drainage hole cover

Abstract

This utility model relates to the field of bridge drainage hole technology and discloses an openable and closable bridge drainage hole cover, comprising: a filter frame with multiple filter holes arranged on the side wall of the filter frame, a top plate fixedly connected to the top of the filter frame, and a water inlet hole communicating with the filter frame on the top plate; and a top sleeve and a bottom sleeve disposed within the filter frame and movably inserted between each other, with an elastic element provided between the top sleeve and the bottom sleeve for moving them apart; a sealing cap integrally formed on the top of the top sleeve; and the bottom sleeve connected to the filter frame. The total height of the top sleeve and the bottom sleeve is extendable between a first length and a second length. When at the first length, the sealing cap blocks the water inlet hole; when at the second length, the sealing cap is positioned above the water inlet hole under the force of the elastic element. This utility model, through the height-adjustable design of the top and bottom sleeves, can quickly cut off the discharge path of pollutants in emergency situations such as hazardous chemical leaks.

Description

Technical Field

[0001] This utility model relates to the field of bridge drainage hole technology, and in particular to an openable and closable bridge drainage hole cover. Background Technology

[0002] Among the numerous cross-river bridges in China, some were built a long time ago, and the technical standards they followed during construction differ from those used today. These bridges generally have drainage holes on their decks, and most of these holes are designed to directly discharge liquids into the water body, lacking any closing mechanism. In the event of a sudden emergency on the bridge deck, such as a hazardous chemical transport vehicle encountering an accident or a hazardous chemical leak, the existing drainage holes are ineffective, and hazardous chemicals will flow into the water body through the pipes, causing serious damage to the ecological environment.

[0003] Traditional fixed drain holes have revealed significant shortcomings in oil spill incidents. When oil or other pollutants leak, fixed drain holes cannot actively block the discharge of pollutants, which then flow into water bodies, causing pollution. This design lacks flexibility and emergency response capabilities, and cannot adjust the drainage function of the drain holes in a timely manner according to actual conditions. Once a pollution incident occurs, the discharge of pollutants is difficult to control, leading to an expansion of the pollution area and increasing the difficulty and cost of pollution control.

[0004] Given the shortcomings of traditional fixed drainage holes in responding to sudden pollution incidents, it is particularly necessary to develop an openable and closable bridge drainage hole cover. Utility Model Content

[0005] The present invention aims to provide an openable and closable bridge drainage hole cover to overcome the shortcomings mentioned above.

[0006] In order to achieve the above objectives, the technical solution of this utility model is as follows:

[0007] Openable and closable bridge drainage hole covers include:

[0008] A filter frame, wherein multiple filter holes are provided on the side walls of the filter frame, and a top plate is fixedly connected to the top of the filter frame, the top plate having a water inlet hole communicating with the filter frame; and

[0009] A top sleeve and a bottom sleeve are disposed within the filter frame and are movably inserted into each other. An elastic element is provided between the top sleeve and the bottom sleeve to move them away from each other. A sealing cap is integrally formed on the top of the top sleeve. The bottom sleeve is connected to the filter frame. The total height of the top sleeve and the bottom sleeve is telescopic between a first length and a second length. When it is at the first length, the top sleeve and the bottom sleeve are locked together by screwing, and the sealing cap blocks the water inlet. When it is at the second length, the sealing cap is positioned above the water inlet under the force of the elastic element, and the top sleeve is intermittently engaged with the water inlet.

[0010] Furthermore, the openings of the top sleeve and the bottom sleeve are arranged opposite to each other. The inner sidewall of the top sleeve is inserted into the circumference of the outer sidewall of the bottom sleeve. The sidewall of the top sleeve is provided with a through sliding groove. The sliding groove is inverted "L" shape and includes a horizontal groove and a vertical groove. One end of the horizontal groove is connected to the top of the vertical groove. The sidewall of the bottom sleeve is threaded with a sliding screw. The sliding screw is slidably connected along the horizontal groove and the vertical groove respectively. When the sliding screw is located in the horizontal groove, the total height of the top sleeve and the bottom sleeve is at the first length. When the sliding screw is located at the bottom of the vertical groove, the total height of the top sleeve and the bottom sleeve is at the second length.

[0011] Furthermore, the outer wall of the bottom sleeve is fitted with a plurality of sealing rings, which are respectively interference-fitted with the outer wall of the bottom sleeve and the inner wall of the top sleeve.

[0012] Furthermore, the elastic element is a compression spring embedded between the top sleeve and the bottom sleeve, with the top end of the compression spring connected to the bottom of the inner cylinder of the top sleeve and the bottom end of the compression spring connected to the bottom of the inner cylinder of the bottom sleeve.

[0013] Furthermore, the upper surface of the sealing cover is hinged with a screw ring and has an insert groove adapted to the screw ring. The screw ring can be inserted into or removed from the insert groove in a flip-out manner.

[0014] Furthermore, the lower end of the filter frame is provided with a stepped hole, the small hole of the stepped hole is located below the large hole of the stepped hole, a limiting ring is fixedly connected to the outer wall of the bottom sleeve, the bottom sleeve is provided through the stepped hole, and the limiting ring abuts against the end wall of the large hole of the stepped hole.

[0015] Furthermore, the inner wall of the stepped hole is provided with a limiting protrusion, and the outer wall of the limiting ring is provided with a limiting groove, and the limiting protrusion and the limiting groove are engaged.

[0016] Furthermore, a damping rubber ring is fixedly connected to the inner wall of the stepped hole, and the outer wall of the bottom sleeve located below the limiting ring is rubbed against the damping rubber ring.

[0017] Furthermore, a sealing ring is fixedly connected to the outer wall of the top sleeve located below the sealing cover. When the total height of the top sleeve and the bottom sleeve is at the first length, the sealing ring is interference-fitted with the water inlet hole.

[0018] Compared with the prior art, this utility model has at least the following advantages:

[0019] (1) This utility model achieves the opening and closing effect of the sealing cover on the water inlet hole through the height-adjustable top sleeve and bottom sleeve. In emergency situations such as hazardous chemical leaks, the operator can press down and twist the top sleeve to block the water inlet hole, thereby quickly cutting off the discharge path of pollutants, effectively preventing hazardous chemicals from entering the water body and protecting the ecological environment.

[0020] (2) This utility model can quickly cut off the discharge path of pollutants through the drainage hole on the bridge deck, control the pollution within the smallest range, and prevent pollutants from entering the water body under the bridge, thereby greatly reducing the scope and difficulty of pollution control.

[0021] (3) This utility model, through the design of sliding screws and inverted "L"-shaped sliding grooves, can quickly switch between normal drainage and emergency sealing. Operators only need to perform simple pressing and turning operations with the screw ring to complete the switch from drainage to sealing within a few seconds. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the overall structure of the openable and closable bridge drainage hole cover of this utility model.

[0024] Figure 2 This is a cross-sectional view of the openable and closable bridge drainage hole cover of this utility model.

[0025] Figure 3 This is a schematic diagram of the structure of the bottom sleeve of this utility model;

[0026] Figure 4 This utility model Figure 2 A magnified view of a portion of region A in the middle.

[0027] Reference numerals in the attached drawings: 1. Filter frame; 2. Filter hole; 3. Top plate; 4. Water inlet hole; 5. Top sleeve; 6. Bottom sleeve; 7. Elastic element; 8. Sealing cover; 9. Sliding groove; 10. Sliding screw; 11. Sealing ring; 12. Tightening ring; 13. Embedding groove; 14. Stepped hole; 15. Limiting ring; 16. Limiting protrusion; 17. Limiting groove; 18. Damping rubber ring; 19. Sealing ring. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] Reference Figure 1-2 This utility model provides an openable and closable bridge drainage hole cover, installed at the drainage hole of a bridge. Its main body is a filter frame 1, with multiple filter holes 2 distributed on its side walls for preliminary filtration of impurities in the liquid entering the drainage hole. A top plate 3 is fixedly connected to the top of the filter frame 1, and water inlet holes 4 are arranged on the top plate 3, communicating with the interior of the filter frame 1 to guide water flow into the filter frame 1. Inside the filter frame 1, a top sleeve 5 and a bottom sleeve 6 are movably inserted. The openings of the top sleeve 5 and the bottom sleeve 6 are arranged opposite each other, with the inner side wall of the top sleeve 5 inserted into the circumference of the outer side wall of the bottom sleeve 6. An elastic element 7 is provided between the top sleeve 5 and the bottom sleeve 6, used to move the top sleeve 5 and the bottom sleeve 6 away from each other. The total height of the top sleeve 5 and the bottom sleeve 6 is telescopic between the first length and the second length. When in the first length, the top sleeve 5 and the bottom sleeve 6 are locked together by screwing, and the sealing cover 8 blocks the water inlet hole 4. When in the second length, the sealing cover 8 is located above the water inlet hole 4 under the action of the elastic element 7, and the top sleeve 5 is intermittently engaged with the water inlet hole 4.

[0031] Specifically, the elastic element 7 is a compression spring embedded between the top sleeve 5 and the bottom sleeve 6. The top end of the compression spring is connected to the bottom of the inner cylinder of the top sleeve 5, and the bottom end is connected to the bottom of the inner cylinder of the bottom sleeve 6. The function of the compression spring is to move the top sleeve 5 and the bottom sleeve 6 away from each other. Multiple sealing rings 11 are fitted on the outer wall of the bottom sleeve 6, and the sealing rings 11 are respectively interference-fitted with the outer wall of the bottom sleeve 6 and the inner wall of the top sleeve 5. The multiple sealing rings 11 between the top sleeve 5 and the bottom sleeve 6 further enhance the sealing performance and reduce the possibility of external impurities corroding the compression spring.

[0032] The top of the top sleeve 5 is integrally formed with a sealing cap 8, which is used to seal the water inlet hole 4 on the top plate 3. The bottom sleeve 6 is connected to the lower end of the filter frame 1. Specifically, the lower end of the filter frame 1 is provided with a stepped hole 14, with the smaller hole of the stepped hole 14 located below the larger hole. A limiting ring 15 is fixedly connected to the outer wall of the bottom sleeve 6. The bottom sleeve 6 passes through the stepped hole 14, and the limiting ring 15 abuts against the end wall of the larger hole of the stepped hole 14. A limiting protrusion 16 is provided on the inner wall of the larger hole of the stepped hole 14, and a limiting groove 17 is provided on the outer wall of the limiting ring 15. The limiting protrusion 16 and the limiting groove 17 engage to achieve a stable connection between the bottom sleeve 6 and the filter frame 1. By providing the limiting protrusion 16 and the limiting groove 17, the bottom sleeve 6 and the filter frame 1 can remain relatively stationary when the top sleeve 5 is screwed on, thereby preventing the top sleeve 5 and the bottom sleeve 6 from rotating synchronously.

[0033] Combined with reference Figure 3 A damping rubber ring 18 is fixedly connected to the inner wall of the small hole 14 in the stepped hole. The outer wall of the bottom sleeve 6, located below the limiting ring 15, is rubbed against the damping rubber ring 18, providing a certain damping effect. This frictional connection between the damping rubber ring 18 and the outer wall of the bottom sleeve 6 allows for quick installation and removal of the bottom sleeve 6 and the filter frame 1. When the bottom sleeve 6 is installed on the filter frame 1, it prevents detachment. If a large amount of debris accumulates inside the filter frame 1, affecting its filtration effect, the bottom sleeve 6 can be separated from the filter frame 1 by external force, allowing for timely cleaning of the debris through the water inlet 4. Alternatively, when components such as the top sleeve 5, bottom sleeve 6, and elastic element 7 are damaged and need replacement, the bottom sleeve 6 can be quickly removed from the filter frame 1 for replacement.

[0034] The top sleeve 5 has a through sliding groove 9 on its side wall. The sliding groove 9 is inverted "L" shape and includes a horizontal groove and a vertical groove. One end of the horizontal groove is connected to the top of the vertical groove. The bottom sleeve 6 has a sliding screw 10 threadedly connected to its side wall. The sliding screw 10 slides along the horizontal groove and the vertical groove respectively. By changing the position of the sliding screw 10 in the sliding groove 9, the total height of the top sleeve 5 and the bottom sleeve 6 can be controlled to extend or retract between a first length and a second length.

[0035] Reference Figure 4 A sealing ring 19 is fixedly connected to the outer wall of the top sleeve 5 located below the sealing cover 8. When the total height of the top sleeve 5 and the bottom sleeve 6 is at the first length, the sealing ring 19 is in an interference fit with the water inlet 4, thereby achieving the sealing of the water inlet 4 by the sealing cover 8. The sealing cover 8 and the water inlet 4 are in an interference fit through the sealing ring 19 to ensure the sealing effect.

[0036] To facilitate the pressing and turning control of the top sleeve 5, the sealing cover 8 of this utility model is hinged with a turning ring 12 on its upper surface, and is provided with an inserting groove 13 that matches the turning ring 12. The turning ring 12 can be inserted into or removed from the inserting groove 13 in a flip-out manner, making it convenient for operators to turn the top sleeve 5 through the turning ring 12.

[0037] Working principle of this utility model:

[0038] When in normal drainage mode, the total height of the top sleeve 5 and the bottom sleeve 6 is at the second length. At this time, the sliding screw 10 is located at the bottom of the vertical groove of the sliding groove 9. Under the action of the elastic element 7, the top sleeve 5 is intermittently engaged with the water inlet hole 4, and the sealing cover 8 is located above the water inlet hole 4, but does not block the water inlet hole 4. Water can enter the filter frame 1 through the water inlet hole 4 and be discharged through the filter hole 2, realizing the normal drainage function of the bridge deck.

[0039] It should be understood that, under normal circumstances, the drainage holes on the bridge deck are located on the side of the bridge deck. After installation, this utility model should ensure that the top plate 3 is flush with the bridge deck. When a vehicle passes over the sealing cover 8, the sealing cover 8 can be pressed down into the water inlet 4. After the vehicle leaves, the sealing cover 8 returns to its original position above the water inlet 4 under the action of the elastic element 7, thus not affecting the drainage function. It should be noted that, since the drainage holes are located on the side of the bridge deck, the probability of vehicles passing over the sealing cover 8 is greatly reduced, reducing the fatigue stress of the compression spring. However, the possibility of damage to the compression spring cannot be ruled out. Workers should conduct routine inspections and replace the spring promptly when damage occurs.

[0040] When it is necessary to close the drain hole, such as in an emergency like a hazardous chemical leak, the operator can press down and tighten the top sleeve 5 using the screw ring 12. During the pressing process, the sliding screw 10 slides upward along the vertical groove of the sliding groove 9 until it slides into the horizontal groove. Then, by tightening, the sliding screw 10 is locked in the horizontal groove. At this time, the total height of the top sleeve 5 and the bottom sleeve 6 is shortened to the first length, the sealing cover 8 blocks the water inlet hole 4, and the sealing ring 19 is interference-fitted with the water inlet hole 4 to ensure a sealing effect. At this time, the top sleeve 5 and the bottom sleeve 6 are locked in place by tightening, preventing the top sleeve 5 from springing back due to the elastic element 7.

[0041] To facilitate operation of the bridge drainage hole cover by non-workers, a prompt can be engraved on the top plate 3 of this utility model, such as "Press down and turn clockwise to lock", to remind non-workers such as freight drivers to close the drainage hole.

[0042] When the emergency is over and the drain hole needs to be reopened, the operator again uses the screw ring 12 to screw the top sleeve 5, causing the sliding screw 10 to slide from the horizontal groove to the vertical groove. At this time, under the action of the elastic element 7, the sliding screw 10 slides in the vertical groove, and the total height of the top sleeve 5 and the bottom sleeve 6 returns to the second length. Under the force of the elastic element 7, the sealing cover 8 is positioned above the water inlet 4, and the top sleeve 5 and the water inlet 4 are intermittently engaged, restoring normal drainage function.

[0043] Through the above structure and operating steps, the openable and closable bridge drainage hole cover can ensure smooth drainage of the bridge deck under normal circumstances, and can quickly close the drainage hole in emergency situations such as hazardous chemical leaks, blocking the discharge path of pollutants, effectively preventing pollutants from entering the water body and protecting the ecological environment.

[0044] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0045] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. An openable and closable bridge drainage hole cover, characterized in that, include: A filter frame (1), the sidewall of which is provided with a plurality of filter holes (2), and a top plate (3) is fixedly connected to the top of the filter frame (1), the top plate (3) being provided with a water inlet hole (4) communicating with the filter frame (1); and A top sleeve (5) and a bottom sleeve (6) are installed inside the filter frame (1) and are movably inserted into each other. An elastic element (7) is provided between the top sleeve (5) and the bottom sleeve (6) to drive them away from each other. A sealing cap (8) is integrally formed on the top of the top sleeve (5). The bottom sleeve (6) is connected to the filter frame (1). The total height of the top sleeve (5) and the bottom sleeve (6) is telescopic between a first length and a second length. When it is at the first length, the top sleeve (5) and the bottom sleeve (6) are locked in place by screwing. The sealing cap (8) blocks the water inlet hole (4). When it is at the second length, the sealing cap (8) is located above the water inlet hole (4) under the force of the elastic element (7), and the top sleeve (5) and the water inlet hole (4) are intermittently engaged.

2. The openable and closable bridge drainage hole cover according to claim 1, characterized in that, The openings of the top sleeve (5) and the bottom sleeve (6) are arranged opposite to each other. The inner sidewall of the top sleeve (5) is inserted into the outer sidewall of the bottom sleeve (6). The sidewall of the top sleeve (5) is provided with a through sliding groove (9). The sliding groove (9) is an inverted "L" shape, including a horizontal groove and a vertical groove. One end of the horizontal groove is connected to the top of the vertical groove. The sidewall of the bottom sleeve (6) is threaded with a sliding screw (10). The sliding screw (10) is slidably connected along the horizontal groove and the vertical groove respectively. When the sliding screw (10) is located in the horizontal groove, the total height of the top sleeve (5) and the bottom sleeve (6) is at the first length. When the sliding screw (10) is located at the bottom of the vertical groove, the total height of the top sleeve (5) and the bottom sleeve (6) is at the second length.

3. The openable and closable bridge drainage hole cover according to claim 2, characterized in that, The outer wall of the bottom sleeve (6) is fitted with a plurality of sealing rings (11), and the sealing rings (11) are respectively press-fitted with the outer wall of the bottom sleeve (6) and the inner wall of the top sleeve (5).

4. The openable and closable bridge drainage hole cover according to claim 3, characterized in that, The elastic element (7) is a compression spring embedded between the top sleeve (5) and the bottom sleeve (6). The top end of the compression spring is connected to the bottom of the inner cylinder of the top sleeve (5), and the bottom end of the compression spring is connected to the bottom of the inner cylinder of the bottom sleeve (6).

5. The openable and closable bridge drainage hole cover according to claim 1, characterized in that, The upper surface of the sealing cover (8) is hinged with a screw ring (12) and has an insert groove (13) adapted to the screw ring (12). The screw ring (12) can be inserted into or removed from the insert groove (13) in a flip-out manner.

6. The openable and closable bridge drainage hole cover according to claim 1, characterized in that, The filter frame (1) is provided with a stepped hole (14) at its lower end. The small hole of the stepped hole (14) is located below the large hole of the stepped hole (14). A limiting ring (15) is fixedly connected to the outer wall of the bottom sleeve (6). The bottom sleeve (6) is provided through the stepped hole (14), and the limiting ring (15) abuts against the end wall of the large hole of the stepped hole (14).

7. The openable and closable bridge drainage hole cover according to claim 6, characterized in that, The inner wall of the stepped hole (14) is provided with a limiting protrusion (16), and the outer wall of the limiting ring (15) is provided with a limiting groove (17). The limiting protrusion (16) and the limiting groove (17) are engaged.

8. The openable and closable bridge drainage hole cover according to claim 6, characterized in that, The inner wall of the stepped hole (14) is fixedly connected to a damping rubber ring (18), and the outer wall of the bottom sleeve (6) located below the limiting ring (15) is rubbed against the damping rubber ring (18).

9. The openable and closable bridge drainage hole cover according to any one of claims 1 to 8, characterized in that, A sealing ring (19) is fixedly connected to the outer wall of the top sleeve (5) located below the sealing cover (8). When the total height of the top sleeve (5) and the bottom sleeve (6) is at the first length, the sealing ring (19) is press-fitted with the water inlet (4).

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