Self-locking drainage ditch cover plate structure for civil aviation airport

Abstract

The self-locking drainage ditch cover plate structure for the civil aviation airport comprises a rectangular outer frame, a first cover plate, a second cover plate and two pieces of angle iron, a rectangular sinking table is arranged on the inner side face of the rectangular outer frame, shaft rods are arranged on the two side faces of the first cover plate and the two side faces of the second cover plate, and shaft holes corresponding to the shaft rods are formed in the inner side face of the rectangular outer frame. The first cover plate and the second cover plate are oppositely arranged, the two angle irons are arranged at the two ends of the rectangular outer frame, two first L-shaped locking rods are arranged at the end, close to the shaft rod, of the bottom of the first cover plate at intervals, two second L-shaped locking rods are arranged at the end, close to the shaft rod, of the bottom of the second cover plate at intervals, and first locking openings corresponding to the first L-shaped locking rods and the second L-shaped locking rods respectively are formed in the angle irons. The first locking opening is communicated with the lower edge of the angle iron, notches corresponding to the first L-shaped locking rod and the second L-shaped locking rod are formed in the rectangular sinking table, and when the first cover plate and the second cover plate cover the rectangular outer frame, the first L-shaped locking rod and the second L-shaped locking rod both penetrate through the notches and the first locking opening.

Description

Technical Field

[0001] This utility model relates to a self-locking drainage ditch cover structure for civil aviation airports. Background Technology

[0002] Civil aviation airports have large flight areas with numerous drainage ditches for water collection and drainage. Some of these ditches need to cross patrol roads or even the apron to reach nearby stormwater storage areas. This necessitates constructing some drainage ditches as reinforced concrete culverts or open drains with covers. In other locations, drainage ditches can be designed as lower-cost concrete channels with standardized covers or storm drain grates. Traditional drainage ditch covers and storm drain grates lack self-locking mechanisms and reliable fixing devices to the drainage ditches. The same applies to load-bearing covers placed on patrol roads or even the apron; they are placed solely on top of the drainage ditches by their weight. If large vehicles or aircraft drive over them, they may vibrate and pop out, affecting operations and traffic safety within the flight area and even the activity area. Currently, there are also drain covers fixed with screws on the market, but opening them is cumbersome, and regular tightening and maintenance are required to prevent screws from loosening and allowing foreign objects to enter the airport. Summary of the Invention

[0003] The problem to be solved by this utility model is to provide a self-locking drainage ditch cover structure for civil aviation airports, which overcomes the shortcomings of the prior art.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a self-locking drainage ditch cover structure for civil aviation airports, including a rectangular outer frame, a first cover plate, a second cover plate, and two angle irons. The inner side of the rectangular outer frame has a rectangular recessed platform. The two sides of the first cover plate and the two sides of the second cover plate each have a shaft. The shaft is located near one end of the first cover plate or the second cover plate. The inner side of the rectangular outer frame has shaft holes near both ends that correspond to the shafts. The shafts pass through the shaft holes. The first cover plate and the second cover plate are arranged opposite to each other. When the first cover plate and the second cover plate are closed on the rectangular outer frame, the bottom surface of the first cover plate and the bottom surface of the second cover plate are in contact with the upper surface of the rectangular recessed platform.

[0005] Two angle irons are respectively positioned near the two ends of the rectangular outer frame. Two L-shaped locking rods are spaced apart at the bottom of the first cover plate near the end of the shaft, and two L-shaped locking rods are spaced apart at the bottom of the second cover plate near the end of the shaft. The angle irons have first locking holes corresponding to the L-shaped locking rods and L-shaped locking rods respectively. The first locking holes are connected to the lower edge of the angle irons. The rectangular recessed platform has notches corresponding to the L-shaped locking rods and L-shaped locking rods respectively. When the first cover plate and the second cover plate are closed on the rectangular outer frame, the L-shaped locking rods and L-shaped locking rods pass through the notches and the first locking holes.

[0006] Optionally, the first locking port on the angle iron is an L-shaped locking port, which is divided into a horizontal part and a vertical part. The vertical part is perpendicular to and passes through the lower edge of the angle iron, and the horizontal part is located in the middle of the vertical plate of the angle iron. The distance between the two opposite inner sidewalls inside the rectangular outer frame is greater than the width of the first cover plate and the second cover plate. When the first cover plate and the second cover plate are closed on the rectangular outer frame, the first L-shaped locking rod and the second L-shaped locking rod can be moved horizontally to allow the first cover plate and the second cover plate to enter the horizontal part of the L-shaped locking port.

[0007] Optionally, one side of the first cover plate and one side of the second cover plate each have a second locking rod. The inner wall of the rectangular outer frame has a second locking slot corresponding to each of the second locking rods. The upper surface of the rectangular outer frame has a threaded hole corresponding to and passing through each of the second locking slots. A bolt is installed in the threaded hole. When the side of the first cover plate with the second locking rod moves horizontally to fit against the inner side of the rectangular outer frame, the second locking rod on the first cover plate can extend into the second locking slot. When the side of the second cover plate with the second locking rod moves horizontally to fit against the inner side of the rectangular outer frame, the second locking rod on the second cover plate can extend into the second locking slot. The end of the bolt can abut against the second locking rod.

[0008] Optionally, the bolt has an internal hexagonal end located at the end of the upper surface of the rectangular frame.

[0009] Optionally, the upper surface of the rectangular frame has countersunk holes that correspond one-to-one with the threaded holes, the countersunk holes are in communication with the threaded holes, and the internal hexagonal end is located inside the countersunk holes.

[0010] Optionally, the second locking hole corresponding to the second locking rod on the side of the first cover plate and the second locking hole corresponding to the second locking rod on the side of the second cover plate are respectively located on opposite inner sides of the rectangular outer frame.

[0011] The advantages and positive effects of this utility model are: due to the adoption of the above technical solution, the structure is reasonably designed and has a self-locking function. During maintenance, the ditch cover can be completely separated from the drainage ditch, which facilitates the maintenance and repair of the inside of the drainage ditch. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of a specific embodiment of the present invention (with the second cover plate open);

[0013] Figure 2 yes Figure 1 A schematic diagram of the overall structure as seen from below;

[0014] Figure 3 This is a schematic diagram of the overall structure of the second specific embodiment of this utility model (both side cover plates are fully closed);

[0015] Figure 4 This is a schematic diagram of the overall structure of the second specific embodiment of the present invention (where the second cover plate is open);

[0016] Figure 5 yes Figure 3 A schematic diagram of the outer frame after removing the side cover plates;

[0017] Figure 6 yes Figure 3 A schematic diagram of the structure of the first cover plate;

[0018] In the diagram: 1. Rectangular outer frame; 1-1. Hexagonal end; 1-2. Rectangular countersunk; 1-3. Notch; 1-4. Shaft hole; 1-5. Second locking port; 2. Angle iron; 2-1. First locking port; 2-2. L-shaped locking port; 3. First cover plate; 3-1. L-shaped locking rod one; 4. Second cover plate; 4-1. L-shaped locking rod two; 4-2. Shaft; 4-3. Locking rod two. Detailed Implementation

[0019] The present invention will be further described in detail below with reference to specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention. In the description of the present invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description, 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, and therefore should not be construed as a limitation of the present invention. In the description of the present invention, it should be noted that unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a mechanical connection or an electrical connection; it can refer to a direct connection or an indirect connection through an intermediate medium; it can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in the present invention can be understood through specific circumstances. Specific Implementation Method 1

[0021] like Figure 1 , Figure 2 As shown, this utility model provides a self-locking drainage ditch cover structure for civil aviation airports, including a rectangular outer frame 1, a first cover plate 3, a second cover plate 4, and two angle irons 2. The inner side of the rectangular outer frame 1 has a rectangular recess 1-2. The two sides of the first cover plate 3 and the two sides of the second cover plate 4 each have a shaft. The shaft is located at one end near the first cover plate 3 or the second cover plate 4. The inner side of the rectangular outer frame 1 has shaft holes 1-4 corresponding to the shafts at both ends. The shafts 4-2 pass into the shaft holes 1-4. The first cover plate 3 and the second cover plate 4 are arranged opposite to each other. When the first cover plate 3 and the second cover plate 4 are closed on the rectangular outer frame 1, the bottom surface of the first cover plate 3 and the bottom surface of the second cover plate 4 are in contact with the upper surface of the rectangular recess 1-2.

[0022] Two angle irons 2 are respectively set near the two ends of the rectangular outer frame 1. Two L-shaped locking rods 3-1 are spaced apart at the bottom of the first cover plate 3 near the shaft. Two L-shaped locking rods 4-1 are spaced apart at the bottom of the second cover plate 4 near the shaft 4-2. The angle iron 2 has a first locking slot 2-1 corresponding to the L-shaped locking rods 3-1 and 4-1 respectively. The first locking slot 2-1 is connected to the lower edge of the angle iron 2. The rectangular recess 1-2 has a notch 1-3 corresponding to the L-shaped locking rods 3-1 and 4-1 respectively. When the first cover plate 3 and the second cover plate 4 are closed on the rectangular outer frame 1, the L-shaped locking rods 3-1 and 4-1 both pass through the notch 1-3 and the first locking slot 2-1.

[0023] In the above structure, after the first cover plate 3 and the second cover plate 4 are closed with the rectangular outer frame 1, the L-shaped locking rod 3-1 and the L-shaped plastic steel rod 4-1 respectively extend into the first locking hole 2-1 on the angle iron 2. The angle iron 2 presses down the two L-shaped locking rods, making the cover plate less likely to bounce up under the action of external vibration. In this structure, the cover plate and the rectangular outer frame 1 are not connected and fixed with screws. It is convenient to open and close without screws and does not require regular tightening and maintenance, thus avoiding the intrusion of foreign objects into the airport due to screw falling off. Specific Implementation Method Two

[0025] This embodiment further improves the structure of the first locking port 2-1 based on Embodiment 1, adjusting the first locking port 2-1 into an L-shaped locking port 2-2, as follows. Figure 3 As shown, the L-shaped lock opening 2-2 is divided into a horizontal part and a vertical part. The vertical part is perpendicular to and passes through the lower edge of the angle iron 2. The horizontal part is located in the middle of the vertical plate of the angle iron 2. The distance between the two opposite inner sidewalls inside the rectangular outer frame 1 is greater than the width of the first cover plate 3 and the second cover plate 4. When the first cover plate 3 and the second cover plate 4 are closed on the rectangular outer frame 1, the L-shaped locking rod 3-1 and the L-shaped locking rod 4-1 can be moved horizontally to enter the horizontal part of the L-shaped lock opening. The purpose of improving the structure of the first lock opening 2-1 into the L-shaped lock opening 2-2 is to enable the angle iron 2 to further lock the cover plate.

[0026] like Figures 3 to 6 As shown, one side of the first cover plate 3 and one side of the second cover plate 4 both have locking rods 4-3. The inner wall of the rectangular outer frame 1 has second locking holes 1-5 corresponding to the locking rods 4-3. The upper surface of the rectangular outer frame 1 has threaded holes corresponding to and passing through the second locking holes 1-5. Bolts are installed in the threaded holes. When the side of the first cover plate 3 with the locking rods 4-3 moves horizontally to fit against the inner side of the rectangular outer frame 1, the locking rods 4-3 on the first cover plate 3 can extend into the second locking holes 1-5. When the side of the second cover plate 4 with the locking rods 4-3 moves horizontally to fit against the inner side of the rectangular outer frame 1, the locking rods 4-3 on the second cover plate 4 can extend into the second locking holes 1-5. The end of the bolt can abut against the locking rods 4-3. By locking the second locking rod 4-3 on the side of the cover plate with bolts, the cover plate is fixedly connected to the rectangular outer frame 1. Even under external vibration, the bolts are unlikely to loosen due to the double locking (L-shaped locking port 2-2 and L-shaped locking rod 3-1, L-shaped locking rod 4-1; locking rod 4-2 and second locking port 1-5). This further ensures that the cover plate will not separate from the rectangular outer frame 1 after it is closed, extending the period of bolt loosening and thus extending the periodic inspection cycle for bolt loosening.

[0027] The bolt has an internal hexagonal end 1-1 at the end of the upper surface of the rectangular outer frame 1. The internal hexagonal end 1-1 prevents the bolt from being loosened by simple tools, thus further ensuring safety.

[0028] The upper surface of the rectangular outer frame 1 has countersunk holes that correspond one-to-one with the threaded holes. The countersunk holes are connected to the threaded holes, and the internal hexagonal end 1-1 is located inside the countersunk holes to prevent the upper end of the bolt from protruding from the upper surface of the rectangular outer frame 1, thereby reducing damage and loosening caused by collisions.

[0029] The second locking slots 1-5 corresponding to the locking rod 4-3 on the side of the first cover plate 3 and the second locking slots 1-5 corresponding to the locking rod 4-3 on the side of the second cover plate 4 are respectively located on opposite inner sides of the rectangular outer frame 1, ensuring the symmetry of the overall structure after locking and avoiding structural damage caused by uneven force.

[0030] The embodiments of this utility model have been described in detail above, but the content described is only a preferred embodiment of this utility model and should not be considered as limiting the scope of implementation of this utility model. All equivalent changes and improvements made in accordance with the claims of this utility model should still fall within the patent coverage of this utility model.

Claims

1. A self-locking drainage ditch cover structure for civil aviation airports, characterized in that: The device includes a rectangular outer frame, a first cover plate, a second cover plate, and two angle irons. The inner side of the rectangular outer frame has a rectangular recess. The two sides of the first cover plate and the two sides of the second cover plate each have a shaft. The shaft is located near one end of the first cover plate or the second cover plate. The inner side of the rectangular outer frame has shaft holes near both ends that correspond to the shafts. The shafts pass through the shaft holes. The first cover plate and the second cover plate are arranged opposite to each other. When the first cover plate and the second cover plate are closed on the rectangular outer frame, the bottom surface of the first cover plate and the bottom surface of the second cover plate are in contact with the upper surface of the rectangular recess. Two angle irons are respectively positioned near the two ends of the rectangular outer frame. Two L-shaped locking rods are spaced apart at the bottom of the first cover plate near the end of the shaft, and two L-shaped locking rods are spaced apart at the bottom of the second cover plate near the end of the shaft. The angle irons have first locking holes corresponding to the L-shaped locking rods and L-shaped locking rods respectively. The first locking holes are connected to the lower edge of the angle irons. The rectangular recessed platform has notches corresponding to the L-shaped locking rods and L-shaped locking rods respectively. When the first cover plate and the second cover plate are closed on the rectangular outer frame, the L-shaped locking rods and L-shaped locking rods pass through the notches and the first locking holes.

2. The self-locking gutter cover plate structure for a civil airport according to claim 1, characterized in that: The first locking port on the angle iron is an L-shaped locking port, which is divided into a horizontal part and a vertical part. The vertical part is perpendicular to and passes through the lower edge of the angle iron. The horizontal part is located in the middle of the vertical plate of the angle iron. The distance between the two opposite inner sidewalls inside the rectangular outer frame is greater than the width of the first cover plate and the second cover plate. When the first cover plate and the second cover plate are closed on the rectangular outer frame, the first L-shaped locking rod and the second L-shaped locking rod can be moved horizontally to allow the first cover plate and the second cover plate to enter the horizontal part of the L-shaped locking port.

3. The self-locking gutter cover plate structure for a civil airport according to claim 2, characterized in that: Both the first cover plate and the second cover plate have locking rods on one side. The inner wall of the rectangular outer frame has a second locking slot corresponding to each locking rod. The upper surface of the rectangular outer frame has threaded holes corresponding to and passing through each second locking slot. A bolt is installed in the threaded hole. When the side of the first cover plate with the locking rod moves horizontally to fit against the inner side of the rectangular outer frame, the locking rod on the first cover plate can extend into the second locking slot. When the side of the second cover plate with the locking rod moves horizontally to fit against the inner side of the rectangular outer frame, the locking rod on the second cover plate can extend into the second locking slot. The end of the bolt can abut against the locking rod.

4. The self-locking gutter cover plate structure for a civil airport according to claim 3, characterized in that: The bolt has an internal hexagonal end located at the end of the upper surface of the rectangular outer frame.

5. The self-locking gutter cover structure for a civil airport according to claim 4, characterized in that: The upper surface of the rectangular frame has countersunk holes that correspond one-to-one with the threaded holes. The countersunk holes are connected to the threaded holes, and the internal hexagonal end is located inside the countersunk holes.

6. The self-locking gutter cover structure for a civil airport according to claim 5, characterized in that: The second lock hole corresponding to the second lock rod of the first cover plate side and the second lock hole corresponding to the second lock rod of the second cover plate side are respectively located on the opposite inner sides of the rectangular outer frame.

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