Safe access hole convenient to open

Abstract

The utility model relates to the technical field of access holes, and particularly discloses a safety access hole convenient to open, which comprises an access base and an access cover, and the access cover covers the access base; wherein at least two lock bodies are arranged on the access cover in an embedded mode, and when a key stretches into a lock hole for unlocking, the lock bodies can be used for lifting the access cover to be separated from the access base by lifting the key; the top surface of the lock body is flush with or approximately flush with the top surface of the access cover; a big-end-down splayed gap is formed between the peripheral outer wall of the access cover sunken groove and the inner wall of the access base vertical frame; the periphery of the access cover is provided with an edge extending outwards, and when the access cover covers the access base, the edge can completely cover the top plane of the access base. The lock is used for management, illegal opening is avoided, safety is improved, and meanwhile the technical defect that the cover plate inclines and is difficult to open can be overcome.

Description

Technical Field

[0001] The utility model relates to the technical field of inspection openings, in particular to a safety inspection opening that is easy to open. Background Art

[0002] The opening method of the inspection opening in the prior art is to provide a hollow hole on the top surface of the inspection cover for a hook or a crowbar to stretch into and open it. However, ladies' high heels and elderly people's crutches can easily get stuck in such hollow holes and cause safety hazards.

[0003] At the same time, the split design of traditional manhole covers cannot be safely managed, and the existing crowbar opening method can also cause illegal opening operations by non-professional engineers, which is relatively unsafe. In addition, there are at least the following technical defects:

[0004] The outer wall of the upper cover of traditional decorative manhole covers is parallel to the inner wall of the vertical frame, and for the sake of beauty and safety, the gap is left very small. When the upper cover is tilted a little when opened with a crowbar, it will interfere with the vertical frame, and it takes a force several times greater than the weight of the cover to open it. The hollow hook holes on the inspection cover are often pried off, and the upper cover and the vertical frame will also be deformed, making the inspection cover more difficult to open.

[0005] Traditional cast iron manhole covers cannot be installed with ground decoration materials. After installation, they are not only unsightly but also block the blind path. In rainy and snowy days, the friction coefficient of cast iron manhole covers is different from that of ground decoration materials, which can easily cause pedestrians to slip and create safety hazards.

[0006] Traditional stainless steel manhole covers can meet the aesthetic requirements, but due to their own material properties, even when they are very thick, they cannot meet the requirements of residual deformation of the manhole covers. Therefore, cast iron manhole covers are installed under traditional stainless steel manhole covers to ensure safety. Summary of the Invention

[0007] In response to the defects in the prior art, the utility model provides a safety inspection port that is easy to open. The figure-eight gap between the inspection base and the inspection cover is utilized to avoid mutual interference between the inspection base and the inspection cover when opening, making it easier to open the inspection cover. The provision of two lock bodies makes the inspection port convenient for safe management, not easy to lose, and can avoid illegal opening to improve safety. The lock body replaces the traditional hollow hook hole and the elastic cover plate of the lock body is in a normally closed state to prevent it from being stuck to high heels, elderly people's crutches, etc., which is more humane. The design of the outward-turned edge protects the gap, which can avoid the technical defect of mud and sand blocking the gap and making it difficult to open.

[0008] In order to solve the above technical problems, the technical solutions adopted by the present invention are as follows:

[0009] A conveniently opened safety inspection port comprises an inspection base and an inspection cover, wherein the inspection cover is covered on the inspection base;

[0010] At least two lock bodies are arranged on the inspection cover in an embedded manner. When a key is inserted into the keyhole to unlock, the key can be lifted to separate the inspection cover from the inspection base.

[0011] Moreover, the top surface of the lock body is flush with or nearly flush with the top surface of the inspection cover.

[0012] The periphery of the inspection cover has an outward extending edge. When the inspection cover is closed on the inspection base, the edge can completely cover the top plane of the inspection base.

[0013] The inspection cover is provided with a square sunken groove, and the sunken depth of the sunken groove is not less than the height of the floor tile.

[0014] In an alternative solution, criss-crossing reinforcing ribs are provided in the sunken groove to enhance the bearing capacity of the inspection cover. When laying floor tiles, it can also increase the bonding strength between the cement concrete and the floor tiles, enhance the strength of the paving material, and ensure that the upper paving material is not easily crushed. The vertical frame of the sunken groove is wavy, having better compressive strength and impact resistance.

[0015] It should be noted that the sunken groove of the inspection cover enables the blind sidewalk bricks to be freely laid, completely solving the problems of broken heads and detours caused by manhole covers in traditional blind sidewalks, and greatly facilitating the travel of the blind.

[0016] When the inspection cover is closed on the inspection base, an inverted trapezoidal gap with a smaller upper part and a larger lower part is formed between the outer wall of the periphery of the sunken groove of the inspection cover and the inner wall of the vertical frame of the inspection base.

[0017] It should be noted that the outer wall of the vertical frame on the periphery of the inspection cover of the traditional inspection opening and the inner wall of the vertical frame of the inspection base are in a parallel relationship. When prying open the inspection cover with a crowbar, when the inspection cover tilts a little, interference will occur between the outer wall of the vertical frame of the inspection cover and the inner wall of the vertical frame of the inspection base. This is why the hollow hook holes on the inspection cover are often pried damaged and the inspection cover cannot be opened. The inverted trapezoidal gap with a smaller upper part and a larger lower part can completely avoid being pried damaged.

[0018] It should also be noted that due to the setting of the inverted trapezoidal gap with a smaller upper part and a larger lower part, even when sediment buries between the inspection cover and the inspection base, the sediment can fall downward through the inverted trapezoidal gap, avoiding blockage between the outer wall of the vertical frame on the periphery of the sunken groove and the inner wall of the vertical frame of the inspection base.

[0019] When the inspection cover is closed on the inspection base, the outer wall of the periphery of the sunken groove of the inspection cover converges inward from top to bottom, and the inner wall of the vertical frame of the inspection base expands outward from top to bottom.

[0020] When the inspection cover is closed on the inspection base, the outer wall of the circumferential side of the sunken groove of the inspection cover converges inward from top to bottom, and the inner wall of the upright frame of the inspection base is vertically arranged.

[0021] In order to ensure that the inspection cover can be smoothly opened without mutual interference with the inspection base even when it is tilted, an alternative technical solution also includes: when the inspection cover is closed on the inspection base, the outer wall of the circumferential side of the sunken groove of the inspection cover is vertically arranged, and the inner wall of the upright frame of the inspection base expands outward from top to bottom.

[0022] Both the inspection base and the inspection cover are made of cast iron material or stainless steel material, or the cast iron material is the main body and the part exposed on the ground is wrapped with stainless steel.

[0023] A decorative border is provided on the part of the inspection cover exposed on the ground, and the width of the decorative border is 15mm - 30mm. Generally, 17mm, 18mm, 20mm, 24mm, 30mm are selected.

[0024] It should be noted that due to the lower limit groove provided on the inspection cover, the top surface area is mainly occupied by the floor tiles embedded in the lower limit groove, and the decorative border is only 17mm - 30mm, looking like only a narrow circle. If the narrow decorative border is covered with stainless steel material, it will achieve that the square floor tiles are surrounded by a narrow stainless steel border, which can not only play the role of distinguishing the position of the inspection opening, but also aesthetically decorate the floor tiles embedded inside. The design scheme of using stainless steel edge wrapping reduces the cost of using all stainless steel materials on the premise of good corrosion resistance and meets the aesthetic requirements of high-grade places.

[0025] At the same time, the design of the relatively narrow decorative border enables most of the position of the sole to fall on the floor decoration material, so that even in rainy or snowy weather, people will not slip due to the stainless steel or cast iron material.

[0026] The upright frame of the inspection base and the upright frame of the sunken groove of the inspection cover are set to be wavy.

[0027] The upright frame of the inspection base is used to support the inspection cover, and its four sides are set to be wavy, achieving a relatively thick bearing capacity with a relatively thin wall thickness structure. The wavy upright frame of the sunken groove of the inspection cover enables the inspection cover to have better compressive strength and impact resistance, and the strength and impact resistance requirements can be achieved with a relatively thin wall thickness structure.

[0028] Reinforcing ribs are arranged in a crisscross pattern in the sunken groove of the inspection cover.

[0029] The beneficial effects of the present utility model are reflected in:

[0030] By inserting two keys into the keyhole of the lock body and pulling up the inspection cover, the purpose of opening the inspection port can be achieved. Moreover, the lock body is in a normally closed state, which avoids the drawback of illegal opening of the inspection cover when there is no need for inspection, and at the same time can prevent loss. Since the lock body opens the inspection cover through a key, there is no need to reserve a hollow hole, and it also avoids the jamming of high heels, crutches, etc., achieving two goals with one action. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0032] Figure 1 is an exploded view of a conveniently opened safety inspection port provided by an embodiment of the present invention;

[0033] Figure 2 is a top view of a conveniently opened safety inspection port provided by an embodiment of the present invention;

[0034] Figure 3 is Figure 2 the cross-sectional view taken along the A-A direction in

[0035] The description of the reference numerals is as follows:

[0036] 1. Inspection base; 101. Vertical frame; 102. Inverted V-shaped gap; 2. Inspection cover; 201. Sunken groove; 202. Square ring; 203. Reinforcing rib; 301. Lock body; 302. Key. SPECIFIC EMBODIMENTS

[0037] The following will describe in detail the embodiments of the technical solutions of the present invention with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention, so they are only examples and cannot be used to limit the protection scope of the present invention.

[0038] It should be noted that unless otherwise specified, the technical terms or scientific terms used in this application should have the ordinary meaning understood by those skilled in the art to which the present invention belongs.

[0039] The present invention provides a conveniently opened safety inspection port, which is used to prevent being stuck by high heels and crutches, and can also avoid illegal opening and loss, improve safety, and at the same time avoid the technical defects that it is difficult to open due to the inspection cover being tilted and stuck or sediment covering the gap.

[0040] The implementable embodiments include:

[0041] Such as Figures 1 - 3As shown in the figure, a safety inspection opening that is convenient to open includes an inspection base 1 and an inspection cover 2, and the inspection cover 2 is covered on the inspection base 1; among them,

[0042] Two lock bodies 301 are embedded in the inspection cover 2. When a key 302 is inserted into the keyhole to unlock, the inspection cover 2 can be lifted by pulling up the key 302 to separate it from the inspection base 1.

[0043] Moreover, the top surface of the lock body 301 is flush or nearly flush with the top surface of the inspection cover 2; the nearly flush means that the top surface of the lock body 301 can be 1 mm - 5 mm lower than the top surface of the inspection cover 2.

[0044] The periphery of the inspection cover 2 has an outward-extending edge. When the inspection cover 2 is covered on the inspection base, the edge can completely cover the top plane of the inspection base.

[0045] The two lock bodies can be located at the positions extending inward from the midpoints of the opposite two sides of a square inspection cover, or at two opposite positions on the diagonal of a square inspection cover. Of course, when the inspection cover is circular, the central connection line of the two lock bodies can be set to pass through or be close to the center of the circular inspection cover. Such a setting can ensure that the inspection cover can be lifted and placed smoothly when lifted.

[0046] By inserting two keys into the keyholes of the lock bodies and pulling up the inspection cover, the purpose of opening the inspection opening can be achieved. Moreover, the lock bodies are in a normally closed state. When there is no need for inspection, it avoids the drawback of illegal opening of the inspection cover, and at the same time can prevent loss. Since the lock bodies open the inspection cover through keys, there is no need to reserve hollow holes, and it also avoids the jamming of high heels and crutches, achieving two goals with one action.

[0047] In some embodiments, the inspection cover 2 has a square sunken groove 201, and the sunken depth of the sunken groove 201 is not less than the height of the floor tile.

[0048] Among them, floor decoration materials such as floor tiles or special floor tiles for blind paths can be laid in the sunken groove 201; when the inspection cover 2 is located on a blind path, there is no need to divert the blind path, and it only needs to be directly laid in the sunken groove 201 to achieve the purpose of disconnecting or bypassing the blind path. Moreover, the sunken depth should meet the requirement that the upper top surface of the floor tile does not exceed the top surface of the inspection cover 2 after installation.

[0049] In some embodiments, the sunken groove 201 is provided with criss-crossing reinforcing ribs 203 to enhance the bearing capacity of the inspection cover 2. Laying floor tiles can also increase the bonding strength between the cement concrete and the floor tiles, enhance the strength of the paving material, and ensure that the upper paving material is not easily crushed; the vertical frame of the sunken groove 201 is wavy, having better compressive strength and impact resistance.

[0050] The outer wall of the vertical frame on the circumferential side of the inspection cover 2 of the traditional inspection opening is parallel to the inner wall of the vertical frame of the inspection base 1. When prying open the inspection cover with a crowbar, if the inspection cover 2 tilts a little bit, interference will occur between the outer wall of the vertical frame of the inspection cover 2 and the inner wall of the vertical frame of the inspection base 1. This is why the hollow hook holes on the inspection cover are often pried damaged and the inspection cover cannot be opened. The upper-small and lower-large inverted trapezoidal gap can completely avoid being pried damaged.

[0051] Meanwhile, due to the setting of the upper-small and lower-large inverted trapezoidal gap 102, even when sediment buries between the inspection cover 2 and the inspection base 1, the sediment can fall downward through the inverted trapezoidal gap 102, avoiding the blockage between the outer wall of the vertical frame on the circumferential side of the sunken groove 201 and the inner wall of the vertical frame 101 of the inspection base 1.

[0052] In some embodiments, when the inspection cover 2 is closed on the inspection base 1, an upper-small and lower-large inverted trapezoidal gap 102 is formed between the outer wall on the circumferential side of the sunken groove 201 of the inspection cover 2 and the inner wall of the vertical frame 101 of the inspection base 1.

[0053] Among them, the setting of the upper-small and lower-large inverted trapezoidal gap 102 enables the inspection cover not to interfere with the inspection base 1 even when the inspection cover is tilted, and can be smoothly opened; meanwhile, even when sediment buries between the inspection cover 2 and the inspection base 1, the sediment can fall downward through the inverted trapezoidal gap 102, avoiding the blockage between the outer wall on the circumferential side of the sunken groove 201 and the inner wall of the vertical frame 101 of the inspection base 1, and avoiding the situation of not being able to open.

[0054] Another optional embodiment is that when the inspection cover 2 is closed on the inspection base 1, the outer wall on the circumferential side of the sunken groove 201 of the inspection cover 2 converges inward from top to bottom, and the inner wall of the vertical frame 101 of the inspection base 1 expands outward from top to bottom.

[0055] This embodiment provides an alternative solution for the inverted trapezoidal gap 102, which can be that the outer wall on the circumferential side of the sunken groove 201 of the inspection cover 2 converges inward irregularly from top to bottom, and the inner wall of the vertical frame 101 of the inspection base 1 expands outward irregularly from top to bottom. That is to say, it does not need to be a smooth curve profile, and can also be an irregular wavy curve or a multi-segment broken line.

[0056] Another optional embodiment is that when the inspection cover 2 is closed on the inspection base 1, the outer wall on the circumferential side of the sunken groove 201 of the inspection cover 2 converges inward from top to bottom, and the inner wall of the vertical frame 101 of the inspection base 1 is vertically arranged.

[0057] Among them, the contour of the outer wall on the circumferential side of the sunken groove 201 converging inwards from top to bottom can be an irregular curve, and the inner wall of the vertical frame 101 of the maintenance base 1 can also be an irregular contour line, such as a wavy shape.

[0058] Another optional implementation is that when the maintenance cover 2 is closed on the maintenance base 1, the outer wall on the circumferential side of the sunken groove 201 of the maintenance cover 2 is vertically arranged, and the inner wall of the vertical frame 101 of the maintenance base 1 expands outwards from top to bottom.

[0059] Among them, the vertical arrangement of the outer wall on the circumferential side of the sunken groove 201 of the maintenance cover 2 can also be a standing state with an irregular contour line; the inner wall of the vertical frame 101 of the maintenance base 1 expands outwards from top to bottom, and its contour line can also be an irregular curve, such as an S shape.

[0060] In some embodiments, both the maintenance base 1 and the maintenance cover 2 are made of cast iron material or stainless steel material, or the cast iron material is the main body and the part exposed on the ground surface is wrapped with stainless steel.

[0061] In some embodiments, the part of the maintenance cover 2 exposed on the ground surface is a decorative border, which can be a square ring 202, and the square ring 202 is covered with stainless steel material.

[0062] Through this embodiment, the problem of insufficient aesthetics of traditional cast iron materials for maintenance openings can be reasonably avoided.

[0063] In the previous embodiment, in order to avoid slipping in rainy and snowy weather, another optional implementation is that the width of the stainless steel material is not greater than 30 mm, and the width of the stainless steel material can be selected as 20 mm, 10 mm, 5 mm.

[0064] Among them, the edge of the stainless steel material is arranged on the circumferential side of the floor tile embedded in the sunken groove to form a circle, and the width of the edge of this circle is not greater than 30 mm. This circle can be inside the edge extending outwards around the maintenance cover. With the design of stainless steel edge wrapping, on the premise of good corrosion resistance and aesthetics, the cost of using all stainless steel materials is also reduced.

[0065] In some embodiments, the part of the maintenance cover 2 exposed on the ground surface is provided with a decorative border, which can be a square ring 202, and the width of the square ring 202 is 15 mm - 30 mm. Generally, 17 mm, 18 mm, 20 mm, 24 mm, 30 mm are selected.

[0066] It should be noted that since the lower limit groove 201 is provided on the inspection cover 2, the top surface area is mainly occupied by the floor tiles embedded in the lower limit groove 201, and the decorative border is only 15 mm - 30 mm, looking like a narrow strip. If the narrow decorative border 202 is covered with stainless steel material, the square floor tiles will be surrounded by a narrow stainless steel border, which can not only play a role in distinguishing the position of the inspection opening, but also aesthetically decorate the floor tiles embedded inside. The design scheme of using stainless steel edging reduces the cost of using all stainless steel materials on the premise of good corrosion resistance and meets the aesthetic requirements of high-class places.

[0067] At the same time, the narrow design of the decorative border enables most of the sole of the shoe to fall on the floor decoration material. Even in rainy or snowy weather, people will not slip due to stainless steel or cast iron materials.

[0068] In some embodiments, the vertical frame 101 of the inspection base 1 is provided with a wavy shape.

[0069] The vertical frame 101 of the inspection base 1 is used to support the inspection cover 2. Its four sides are provided with a wavy shape, and the thin wall thickness structure achieves the bearing capacity of the thick wall thickness.

[0070] In some embodiments, criss-crossing reinforcing ribs 203 are provided in the sunken groove 201 of the inspection cover 2.

[0071] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and the description of the present invention.

Claims

1. A conveniently opened safety inspection port, comprising an inspection base (1) and an inspection cover (2), wherein the inspection cover (2) covers the inspection base (1); characterized in that: At least two lock bodies (301) are embedded on the inspection cover (2), and when a key (302) is inserted into the lock hole to unlock the lock, the key (302) can be lifted up to separate the inspection cover (2) from the inspection base (1); Furthermore, the top surface of the lock body (301) is flush or nearly flush with the top surface of the inspection cover (2); The periphery of the inspection cover (2) has an outwardly extending edge, and when the inspection cover (2) is closed onto the inspection base (1), the edge can completely cover the top plane of the inspection base (1).

2. The convenient-to-open safety inspection hatch according to claim 1, characterized in that: The inspection cover (2) is provided with a square sunken groove (201), and the sunken depth of the sunken groove (201) is not less than the height of the floor tiles.

3. The convenient-to-open safety inspection hatch according to claim 2, characterized in that: When the inspection cover (2) is closed onto the inspection base (1), an eight-shaped gap (102) with a smaller top and a larger bottom is formed between the peripheral outer wall of the sunken groove (201) of the inspection cover (2) and the inner wall of the vertical frame (101) of the inspection base (1).

4. The convenient-to-open safety inspection hatch according to claim 2, characterized in that: When the inspection cover (2) is closed onto the inspection base (1), the peripheral outer wall of the sunken groove (201) of the inspection cover (2) converges inward from top to bottom, and the inner wall of the vertical frame (101) of the inspection base (1) expands outward from top to bottom.

5. The convenient-to-open safety inspection hatch according to claim 2, characterized in that: When the inspection cover (2) is closed onto the inspection base (1), the peripheral outer wall of the sunken groove (201) of the inspection cover (2) converges inward from top to bottom, and the inner wall of the vertical frame (101) of the inspection base (1) is arranged vertically.

6. The convenient-to-open safety inspection hatch according to claim 2, characterized in that: When the inspection cover (2) is closed onto the inspection base (1), the peripheral outer wall of the sunken groove (201) of the inspection cover (2) is arranged vertically, and the inner wall of the vertical frame (101) of the inspection base (1) expands outward from top to bottom.

7. The convenient-to-open safety inspection hatch according to claim 2, characterized in that: The inspection base (1) and the inspection cover (2) are both made of cast iron or stainless steel, or are mainly made of cast iron with the portion exposed on the ground being rimmed with stainless steel.

8. The convenient-to-open safety inspection hatch according to claim 7, characterized in that: The portion of the inspection cover (2) exposed to the ground is provided with a decorative border, and the width of the decorative border is 15mm-30mm.

9. The convenient-to-open safety inspection hatch according to claim 1, characterized in that: The vertical frame (101) of the inspection base (1) and the vertical frame of the sunken groove (201) of the inspection cover (2) are arranged in a wavy pattern.

10. The convenient-to-open safety inspection hatch according to claim 2, characterized in that: The sunken groove (201) of the inspection cover (2) is provided with crisscross reinforcing ribs (203).

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