A steel cover with inspection holes

Abstract

This utility model belongs to the field of underground engineering construction. To address the need for maintenance personnel to directly and conveniently observe the water flow and quality in pools or channels beneath steel cover plates, a steel cover plate with an inspection hole is disclosed. The steel cover plate includes an inspection hole, an inspection hole cover plate, and a concealed handle. The concealed handle is installed on the inspection hole cover plate and can be hidden inside or at the bottom of the inspection hole cover plate. The concealed handle includes a handle that extends above the inspection hole cover plate when the inspection hole needs to be opened. The advantages of this utility model are: convenient and safe operation; the inspection hole cover plate can be opened and closed freely, sealing off gas and preventing loss; the concealed handle facilitates traffic and enhances overall aesthetics.

Description

Technical Field

[0001] This utility model belongs to the field of underground engineering construction, and specifically relates to a steel cover plate with inspection holes. Background Technology

[0002] In underground wastewater treatment plants, the tops of pools or channels serve as operating areas and require enclosed steel covers to prevent personnel from falling and to prevent odors from escaping. However, during plant operation, maintenance personnel need to monitor water flow and quality in certain pools or channels, necessitating frequent opening and closing of the steel covers. Ordinary steel covers are large and heavy, requiring two people to lift them, making them inconvenient to operate. Utility Model Content

[0003] To enable maintenance personnel to directly and conveniently observe the water flow and quality in the pool or canal beneath a steel cover plate, this utility model provides a steel cover plate with inspection holes. Specifically, this utility model achieves this through the following technical solution:

[0004] A steel cover plate with an inspection hole includes a steel cover plate, an inspection hole, an inspection hole cover plate, and a concealed handle; the inspection hole is disposed on the steel cover plate; the size of the inspection hole cover plate matches the inspection hole; the inspection hole cover plate is used to close the inspection hole; the concealed handle is disposed on the inspection hole cover plate and can be hidden inside the inspection hole cover plate or at the bottom of the inspection hole cover plate; the concealed handle includes a handle; the handle can extend above the inspection hole cover plate when it is necessary to open the inspection hole.

[0005] Preferably, both the inspection hole and the inspection hole cover are rectangular in shape; stiffening frames and normal stiffening ribs are arranged at the bottom of the steel cover panel around the inspection hole; the stiffening frames are straight strips, parallel to the rectangular side of the nearest inspection hole; one end of the normal stiffening rib is perpendicularly connected to the adjacent stiffening frame; the other end of the normal stiffening rib extends into the inspection hole to support the inspection hole cover when it is in a closed state; the normal stiffening rib maintains a distance from the hidden handle.

[0006] Preferably, the opening side length of the inspection hole is 15cm to 20cm, the distance between the stiffening frame and the rectangular side of the nearest inspection hole is 2cm, and the length of the normal stiffening rib is 3cm.

[0007] Preferably, the inspection hole cover includes a hinge, and the inspection hole cover is movably connected to the steel cover plate on one side of the inspection hole via the hinge. By pulling the handle on the hidden handle, the inspection hole cover can be opened and closed with the hinge as the fulcrum.

[0008] The inspection hole cover includes a bowl-shaped groove located on the upper part of the inspection hole cover and away from the hinge. A circular hole is located at the center of the bottom of the bowl-shaped groove, penetrating the upper and lower parts of the inspection hole cover. The concealed handle also includes a push-to-rebound mechanism and a stainless steel fixing support. The push-to-rebound mechanism includes a housing and a telescopic rod. The housing is fixed to the stainless steel fixing support, which is welded to the bottom of the inspection hole cover. One end of the telescopic rod is connected to the push-to-rebound mechanism, and the other end passes through the circular hole and connects to the handle. The diameter of the circular hole is larger than the maximum outer diameter of the telescopic rod, smaller than the maximum outer diameter of the handle, and the minimum inner diameter of the bowl-shaped groove is larger than the maximum outer diameter of the handle.

[0009] Preferably, the steel cover plate includes a panel, a frame, stiffening ribs, and a sealing ring. The panel of the steel cover plate is made of patterned steel plate; the frame is arranged at the bottom edge of the steel cover plate; the stiffening ribs are made of smooth steel plate and are arranged at the bottom of the steel cover plate; the sealing ring is made of rubber gasket and is respectively attached to the bottom edge of the steel cover plate and the outside of the frame.

[0010] Preferably, the handle and the bowl-shaped groove have matching outlines, and the handle is threadedly connected to the end of the telescopic rod.

[0011] Preferably, there is one or more inspection holes, and the number of inspection hole cover plates matches the number of inspection holes.

[0012] The beneficial effects of this utility model are:

[0013] 1. This utility model has one or more inspection holes on the steel cover plate, allowing maintenance personnel to directly observe or perform inspection work through the inspection holes. Only one person is needed to operate it, making it convenient and safe.

[0014] 2. This utility model uses a hinge to fix the inspection hole cover plate to the steel cover plate, which can be opened and closed freely, and can seal the gas and prevent loss.

[0015] 3. The inspection hole cover is equipped with a hidden handle to prevent accidental activation by personnel while walking, which facilitates traffic and maintains the overall aesthetics. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0017] Figure 2 This is a cross-sectional view of the present invention at the inspection hole;

[0018] Figure 3 This is a schematic diagram of the installation of the inspection hole cover plate of this utility model;

[0019] Figure 4 This is a three-dimensional schematic diagram of the concealed handle of this utility model;

[0020] Figure 5 This is a schematic diagram of the installation of the concealed handle of this utility model;

[0021] Figures 6-9 This is a schematic diagram showing the concealed handle of this utility model in use.

[0022] Explanation of reference numerals in the attached drawings: 1-Steel cover plate, 11-Panel, 12-Frame, 13-Reinforcing rib, 14-Sealing ring, 2-Inspection hole, 21-Rectangular hole, 22-Reinforcing frame, 23-Normal reinforcing rib, 3-Inspection hole cover plate, 31-Rectangular panel, 32-Hinge, 33-Bowl-shaped groove, 34-Round hole, 4-Hidden handle, 41-Handle, 42-Press-rebound device, 421-Telescopic rod, 422-Housing shell, 43-Stainless steel fixed support. Detailed Implementation

[0023] The present invention will be further described below with reference to specific embodiments. These specific embodiments are further explanations of the principles of the present invention and are not intended to limit the present invention in any way. Any technologies identical or similar to the present invention do not exceed the scope of protection of the present invention.

[0024] like Figures 1 to 5As shown, a steel cover plate with an inspection hole includes: a steel cover plate 1, an inspection hole 2, an inspection hole cover plate 3, and a concealed handle 4. The steel cover plate 1 is used to enclose underground sewage treatment plant pools or channels, etc. The dimensions and steel thickness of each part of the steel cover plate 1 comply with the relevant requirements of the national standards "Ditches and Covers" and drawing sets 02J331, 08J332, and 08G221. The inspection hole 2 is located on the steel cover plate 1. Through the inspection hole 2, maintenance personnel can observe the water flow and water quality in the pool or channel below the steel cover plate 1. The dimensions of the inspection hole cover plate 3 match those of the inspection hole 2; the inspection hole cover plate 3 is used to close the inspection hole 2; when maintenance personnel need to observe the water flow and water quality in the pool or channel below the steel cover plate 1, they can simply open the inspection hole cover plate 3. The dimensions and steel thickness of each part of the inspection hole cover plate must also comply with the relevant requirements of the national standards "Ditches and Covers" and drawing sets 02J331, 08J332 and 08G221; the hidden handle 4 is installed on the inspection hole cover plate 3 and is hidden inside the inspection hole cover plate 3 or at the bottom of the inspection hole cover plate 3, so that maintenance personnel can easily open the inspection hole cover plate 3 as a handle when they need to observe the water flow and water quality in the pool or canal below the steel cover plate 1; the hidden handle 4 includes a handle 41; the handle 41 can extend above the inspection hole cover plate 3 when the inspection hole 2 needs to be opened; after the inspection hole 2 is closed, the handle 41 and the hidden handle 4 can be hidden inside the inspection hole cover plate 3; that is, when maintenance personnel need to observe the water flow and water quality in part of the pool or canal below the steel cover plate 1, the handle 41 extends above the inspection hole cover plate 3. Maintenance personnel can open the inspection hole 2 by pulling up the inspection hole cover 3 using the handle 41. When closing the inspection hole 2 after observation, the handle 41, along with the concealed handle 4, retracts into the inspection hole cover 3, ensuring a smooth surface for both the steel cover 1 and the inspection hole cover 3 when closed, facilitating passage on the upper part of the steel cover 1 and maintaining an aesthetically pleasing appearance. Regarding how the inspection hole cover 3 is fixed to the steel cover 1 for easy opening and closing of the inspection hole, those skilled in the art can provide steps or ribs along the edge of the inspection hole 2 to support the inspection hole cover 3; this invention does not impose such limitations.

[0025] To clarify, for ease of description, the bottom of the steel cover panel refers to the side of the steel cover panel facing the enclosed underground sewage treatment plant tank or canal, while the top of the steel cover panel refers to the side of the steel cover panel facing away from the enclosed underground sewage treatment plant tank or canal. Similarly, the bottom of the inspection hole cover refers to the side of the inspection hole cover facing the underground sewage treatment plant tank or canal, while the top of the inspection hole cover refers to the side of the inspection hole cover facing away from the underground sewage treatment plant tank or canal.

[0026] Another preferred embodiment is based on the above embodiment, wherein both the inspection hole 2 and the inspection hole cover plate 3 are rectangular in shape; stiffening frames 22 and normal stiffening ribs 23 are arranged at the bottom of the steel cover plate panel around the inspection hole 2; the stiffening frames 22 are used to enhance the rigidity of the steel cover plate 1 at the opening of the inspection hole 2; the stiffening frames 22 are straight bars, parallel to the rectangular side of the nearest inspection hole; one end of the normal stiffening rib 23 is perpendicularly connected to the adjacent stiffening frame 22; the other end of the normal stiffening rib 23 extends into the inspection hole. Inside the inspection hole 2, the inspection hole cover plate 3 is used to support the inspection hole cover plate 3 in a closed state; the normal stiffening rib 23 is kept at a distance from the hidden handle 4; that is, the inspection hole cover plate is a rectangular panel 31, the lateral length of the normal stiffening rib 23 is greater than the distance from the stiffening frame 22 to the rectangular side of the nearest inspection hole 2, a part of its lateral length is arranged at the bottom of the steel cover plate 1 panel around the inspection hole 2, and the other part of its lateral length extends into the interior of the inspection hole 2 to support the rectangular panel 31 in a closed state.

[0027] The fact that the normal stiffening rib 23 keeps a distance from the hidden handle 4 means that when the rectangular panel 31 closes the inspection hole 2, the normal stiffening rib 23 will not block the hidden handle 4 from being in place, and will not occupy the space of the hidden handle 4 when the inspection hole cover plate 3 is in the closed state.

[0028] More preferably, the opening side length of the inspection hole 2 is 15cm to 20cm, the distance between the stiffening frame 22 and the rectangular side of its nearest inspection hole 2 is 2cm, and the normal stiffening rib 23 is 3cm long. In practice, the inspection hole cover plate 1 can be made of patterned steel plate, with a size 1mm to 2mm smaller than the inspection hole; this utility model does not impose any limitations on this.

[0029] See appendix Figure 2 and attached Figure 3 Based on the previous embodiments, the inspection hole cover 3 includes a hinge 32, and the inspection hole cover 3 is movably connected to the steel cover plate 1 on one side of the inspection hole 2 via the hinge 32. By pulling the handle 41 on the hidden handle 4, the inspection hole cover 3 can be opened and closed with the hinge 32 as a fulcrum, thereby opening or closing the inspection hole. When opening and closing the inspection hole cover 3, in order to save effort, the hidden handle 4 can be arranged on the inspection hole cover 3 in an area away from the hinge 32, increasing the power arm for opening and closing the inspection hole cover 3. This utility model does not limit this.

[0030] Another embodiment is shown in the appendix. Figure 2 Appendix Figure 3 Appendix Figure 4 and attached Figure 5Based on the previous embodiment, the inspection hole cover 3 includes a bowl-shaped groove 33, which is arranged on the upper part of the inspection hole cover 3 and away from the hinge 32; a round hole 34 is arranged in the center of the bottom of the bowl-shaped groove 33, which penetrates the upper part and the bottom of the inspection hole cover 3; the hidden handle 4 also includes a press-and-rebound device 42 and a stainless steel fixing support 43; the press-and-rebound device 42 includes a housing 422 and a telescopic rod 421; the housing 422 is fixed to the hinge 32. The stainless steel fixing support 43 is welded to the bottom of the inspection hole cover plate 3; one end of the telescopic rod 421 is connected to the press rebound device 42, and the other end of the telescopic rod 421 passes through the circular hole 34 and is connected to the handle 41; the diameter of the circular hole 34 is greater than the diameter of the maximum outer diameter of the telescopic rod 421, the diameter of the circular hole 34 is smaller than the maximum outer diameter of the handle 41, and the minimum inner diameter of the bowl-shaped groove 33 is greater than the maximum outer diameter of the handle 41.

[0031] The press-and-rebound device 42 is a common device in the prior art. Pressing it once causes it to indent, thus retracting the telescopic rod 421 connected to it. Pressing it again causes it to protrude, thus extending the telescopic rod 421. When the telescopic rod 421 retracts, the handle 41 connected to it descends into the bowl-shaped groove and locks, thus concealing the hidden handle 4 inside the inspection hole cover 3. The handle 41 is not exposed above the upper part of the inspection hole cover 3, or is flush with the upper part of the inspection hole cover 3. When the telescopic rod 421 extends, the handle 41 connected to it springs up and extends outside the bowl-shaped groove 33, thus extending above the upper part of the inspection hole cover 3. Maintenance personnel can then grasp the handle 41 to open the inspection hole cover. In other words, when maintenance personnel need to observe the water flow and quality in the pool or canal under the steel cover, and need to open the inspection hole cover, they press the handle 41. This transmits force to the push-back mechanism 42 via the telescopic rod 421. The push-back mechanism 42 then protrudes, and the telescopic rod 421 extends, pushing the handle 41 up and extending it above the upper part of the inspection hole cover 3. Maintenance personnel can then easily and safely open the inspection hole cover by holding the handle. After closing the inspection hole cover 3, maintenance personnel press the handle 41. This transmits force to the push-back mechanism 42 via the telescopic rod 421. The push-back mechanism 42 retracts until the handle 41 locks inside the bowl-shaped groove 33, thus concealing the telescopic rod 421 and the handle 41 within the inspection hole cover 3 and the bowl-shaped groove 33, facilitating traffic and maintaining an aesthetically pleasing appearance.

[0032] The diameter of the circular hole 34 is larger than the maximum outer diameter of the telescopic rod 421, so that the telescopic rod 421 can freely extend and retract within the circular hole 34. The diameter of the circular hole 34 is smaller than the maximum outer diameter of the handle 41, so that the handle 41 will not sink into the circular hole 34 when pressed, and the handle 41 can extend above the inspection hole cover plate 3 when the rebound device 42 is pressed out. The minimum inner diameter of the bowl-shaped groove 33 is larger than the maximum outer diameter of the handle 41, so that the handle 41 can be hidden inside the bowl-shaped groove 33 after the telescopic rod 421 is retracted.

[0033] like Figures 6 to 9 As shown, when maintenance personnel use this utility model for observation or testing, they can adopt the following steps: Step 1: In normal condition, the inspection hole cover 3 is closed, the telescopic rod 421 is in the locked state, and the round handle 41 is hidden in the bowl-shaped groove 33. At this time, press Figure 8 , Figure 9 Operation: Press handle 41 all the way down to unlock, then release. The telescopic rod 421 will spring upwards, with the round handle 41 protruding above the rectangular panel 31. Maintenance personnel hold handle 41 to open the inspection hole cover 3 for observation. Second step: After observation, maintenance personnel hold handle 41 to close the inspection hole cover 3. At this time, the telescopic rod 421 is in the spring-up position, and handle 41 protrudes above the rectangular panel 31. Then press... Figure 6 , Figure 7 Operation: Press the handle 41 all the way down to retract the telescopic rod 421 and put it back into the locked state. Then release the handle 41 and it will retract into the bowl-shaped groove 33.

[0034] See appendix Figure 1 and attached Figure 2 In another preferred embodiment, based on the above embodiments, the steel cover plate 1 includes a panel 11, a frame 12, stiffening ribs 13, and a sealing ring 14. The panel of the steel cover plate 1 is made of patterned steel plate; the frame 12 is arranged at the bottom edge of the steel cover plate 1 to better seal the underground sewage treatment plant pool or canal; the stiffening ribs 13 are made of smooth steel plate and are arranged at the bottom of the steel cover plate 1 to strengthen the steel cover plate 1; the sealing ring 14 is made of rubber gasket and is respectively attached to the bottom edge of the steel cover plate 1 and the outer side of the frame 12 to better seal the underground sewage treatment plant pool or canal. Furthermore, the stiffening ribs 13 are arranged at the bottom of the steel cover plate 1 and are horizontally and vertically connected to the frame 12 within the frame 12.

[0035] In another preferred embodiment, the handle 41 and the bowl-shaped groove 33 have matching outlines, and the handle 41 is threadedly connected to the end of the telescopic rod 421. The matching outlines of the handle 41 and the bowl-shaped groove 33 mean that after the inspection hole cover plate 3 closes the inspection hole 2, and the hidden handle 4 is hidden inside the inspection hole cover plate 3, the handle 41 can be embedded in the bowl-shaped groove 33 without any extra space visible from the surface of the bowl-shaped groove 33. The purpose is that after the hidden handle 4 is hidden inside the inspection hole cover plate 3, the surface of the inspection hole cover plate 3 is flat, without obvious depressions or gaps. Of course, sufficient space is reserved between the handle 41 and the round hole 34 to allow for sufficient downward pressure on the handle 41, enabling it to trigger the push-back mechanism 42 to bulge. Furthermore, the handle 41 is a round handle. Based on the above embodiment, the number of inspection holes 2 is one or more, and the number of inspection hole cover plates 3 matches the number of inspection holes 2.

Claims

1. A steel cover plate with an inspection hole, comprising a steel cover plate, an inspection hole, an inspection hole cover plate, and a concealed handle; the inspection hole is disposed on the steel cover plate; the size of the inspection hole cover plate matches the inspection hole; the inspection hole cover plate is used to close the inspection hole; the concealed handle is disposed on the inspection hole cover plate and can be concealed inside the inspection hole cover plate or at the bottom of the inspection hole cover plate; the concealed handle includes a handle; the handle can extend above the inspection hole cover plate when it is necessary to open the inspection hole; both the inspection hole and the inspection hole cover plate are rectangular in shape; a stiffening frame and normal stiffening ribs are disposed at the bottom of the steel cover plate panel around the inspection hole; the stiffening frame is a straight bar shape, and is positioned at a distance from the inspection hole. The rectangular side of the nearest inspection hole is parallel; one end of the normal stiffening rib is perpendicularly connected to the adjacent stiffening frame; the other end of the normal stiffening rib extends into the inspection hole to support the inspection hole cover plate in the closed state; the normal stiffening rib maintains a distance from the hidden handle; the opening side length of the inspection hole is 15cm to 20cm, the distance between the stiffening frame and the rectangular side of the nearest inspection hole is 2cm, and the normal stiffening rib is 3cm long; the inspection hole cover plate includes a hinge, and the inspection hole cover plate is movably connected to the steel cover plate on one side of the inspection hole via the hinge; by pulling the handle on the hidden handle, the inspection hole cover plate can be opened and closed with the hinge as a fulcrum; characterized in that The inspection hole cover includes a bowl-shaped groove located on the upper part of the inspection hole cover and away from the hinge. A circular hole is located at the center of the bottom of the bowl-shaped groove, penetrating the upper and lower parts of the inspection hole cover. The concealed handle also includes a push-to-rebound mechanism and a stainless steel fixing support. The push-to-rebound mechanism includes a housing and a telescopic rod. The housing is fixed to the stainless steel fixing support, which is welded to the bottom of the inspection hole cover. One end of the telescopic rod is connected to the push-to-rebound mechanism, and the other end passes through the circular hole and connects to the handle. The diameter of the circular hole is larger than the maximum outer diameter of the telescopic rod, smaller than the maximum outer diameter of the handle, and the minimum inner diameter of the bowl-shaped groove is larger than the maximum outer diameter of the handle.

2. A steel cover plate with an inspection hole according to claim 1, characterized in that... The steel cover plate includes a panel, a frame, stiffening ribs, and a sealing ring. The panel of the steel cover plate is made of patterned steel plate. The frame is arranged at the bottom edge of the steel cover plate. The stiffening ribs are made of smooth steel plate and are arranged at the bottom of the steel cover plate. The sealing ring is made of rubber gasket and is respectively attached to the bottom edge of the steel cover plate and the outside of the frame.

3. A steel cover plate with an inspection hole according to claim 1, characterized in that... The handle and the bowl-shaped groove are matched in shape, and the handle is connected to the end of the telescopic rod by a thread.

4. A steel cover plate with an inspection hole according to claim 1, characterized in that... The inspection hole may be one or more, and the number of inspection hole cover plates matches the number of inspection holes.

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