A high-strength wear-resistant glass manhole cover

Abstract

The present invention discloses a high-strength, wear-resistant glass manhole cover, which relates to the technical field of manhole covers, including a manhole cover, a protective ring body and tempered glass, an aluminum strip coated on the edge of the tempered glass, and a protective ring body including a limit ring, a side protective ring and a fan-shaped protective block; the fan-shaped protective block is driven by a push plate arranged in the side protective ring to synchronously expand or contract, and the fan-shaped protective block forms a movable channel for replacing the tempered glass after contraction, and forms a ring body to support the aluminum strip of the tempered glass after contraction. When the fan-shaped protective block contracts, a movable channel is formed, and the tempered glass can be taken out of the protective ring body to complete the disassembly of the tempered glass. When unfolded, it is in a ring shape and can support the tempered glass, making installation and disassembly convenient, while effectively supporting the glass and not easily deformed. The glass material part gives the manhole cover a certain degree of transparency and glossiness, and the situation inside the well can be directly seen through the glass without opening the manhole cover for inspection.

Description

Technical Field

[0001] The present invention relates to the technical field of manhole covers, in particular to a high-strength wear-resistant glass manhole cover. Background Art

[0002] In municipal engineering, glass manhole covers (typically those made of high-strength tempered or laminated glass) offer unique design features and advantages in certain specific scenarios (such as transparent lighting and decorative landscape effects). However, in most conventional municipal and road applications, they suffer from significant shortcomings and pose significant safety risks, resulting in extremely strict restrictions and even prohibitions on their use in areas with heavy traffic. Whether from pedestrians or vehicle tires, the glass surface is easily scratched and worn, rapidly losing its transparency and quickly losing its original aesthetic appeal. Hard objects like sand, gravel, and metal shavings on the road surface can greatly accelerate the wear process, necessitating replacement of the glass manhole cover. Installation and removal of glass manhole covers require even support to avoid excessive localized stress. Replacement and repair are also more cumbersome than with bulky traditional manhole covers. Summary of the Invention

[0003] The present invention aims to provide a high-strength, wear-resistant glass manhole cover having a fan-shaped protective block that forms a movable channel when retracted, allowing the tempered glass to be removed from the protective ring body and disassembled. When unfolded into a ring shape, it can support the tempered glass, making installation and disassembly convenient, while effectively supporting the glass and preventing deformation. The glass portion gives the manhole cover a certain degree of transparency and gloss, allowing the user to directly see the situation inside the manhole through the glass, without having to open the manhole cover for inspection.

[0004] To achieve the above-mentioned object, the present invention provides the following technical solution: a high-strength wear-resistant glass manhole cover, comprising:

[0005] The manhole cover seat is assembled on the concrete manhole ring seat on the ground, and the concrete manhole ring seat is located at the manhole mouth;

[0006] The manhole cover includes a protective ring body and tempered glass. The edge of the tempered glass is covered with aluminum strips. The protective ring body includes a limit ring, a side protection ring and a fan-shaped protection block. The outer wall of the side protection ring is hinged on the manhole cover base.

[0007] There are several fan-shaped protection blocks, one edge of the side protection ring is fixed on the limiting ring, the aluminum strip of the tempered glass is placed on the limiting ring and placed in the side protection ring, each fan-shaped protection block is driven by a push plate set in the side protection ring to expand or contract synchronously, and after the fan-shaped protection block contracts, a movable channel for replacing the tempered glass is formed, and after the fan-shaped protection block contracts, a ring body is formed to support the aluminum strip of the tempered glass.

[0008] As an optional embodiment, a circle of support ring is fixed on the inner wall of the manhole cover seat, and the top of the support ring is provided with a ring groove for accommodating the side protection ring. The top surface of the support ring is used to support the fan-shaped protection block and accommodate the side protection ring.

[0009] As an optional embodiment, the interior of the side protection ring is divided into a sealing chamber and a receiving chamber by a spacer ring, and the push plate passes through the spacer ring;

[0010] An annular groove communicating with the receiving chamber is provided on the inner circumference of the side protection ring, and the annular groove is used for the fan-shaped protection block to unfold and telescopically move through;

[0011] A switch blind groove is also provided on the top of the side protection ring.

[0012] As an optional embodiment, the push plate is driven to reciprocate by a cylinder or a driving member.

[0013] As an optional embodiment, the number of the cylinders is consistent with the number of push plates, the rod of each cylinder is connected to one end of the push plate, and the other end of the push plate passes through the side protection ring and is connected to the fan-shaped protection block.

[0014] As an optional embodiment, the driving member includes a rotating ring, a push rod, a rotating sleeve and a support frame. Push rods distributed at equal intervals are provided on the outer circumference of the rotating ring. The number of support frames and push plates is the same. The rotating sleeve is clamped on the support frame and rotates. A number of equally spaced arc grooves are provided on the inner circumference of the rotating sleeve. The rotating ring passes through the rotating sleeve and the push rods are inserted into the arc grooves.

[0015] As an optional embodiment, a gear ring is provided on the outer wall of the rotating ring, and a gear is provided on the outer wall of the rotating sleeve, and the gear is engaged with the tooth groove of the push plate.

[0016] As an optional embodiment, a gear ring is provided on the outer wall of the rotating ring, a spiral pattern is provided on the outer wall of the rotating sleeve, the spiral pattern is meshed with the worm gear, a screw connected to the center of the worm gear is meshed with the screw sleeve, and the screw sleeve is fixed to the port of the push plate;

[0017] A frame body for supporting the screw rod is arranged in the side protection ring, and a clamping block for clamping into the strip groove on the side of the screw sleeve is also arranged.

[0018] As an optional embodiment, a support block with a right-angled trapezoidal cross-section is provided on the side of the fan-shaped protection block that connects to the tempered glass, and one end of the inclined surface of the support block faces the tempered glass. A vertical side panel is fixed on the right-angled end of the support block, and a vertical groove connected to the ring groove is provided on the inner circumference of the side protection ring, and the vertical groove is used for the side panel to pass through.

[0019] As an optional embodiment, the outer walls of the support block and the side panels are covered with rubber pads, the side panels move to push the tempered glass to the center position, and the support block moves to cooperate with the limit ring to clamp the tempered glass.

[0020] Technical effects and advantages of the present invention:

[0021] 1. By providing expandable and retractable fan-shaped protective blocks, a movable channel is formed when retracted, allowing the tempered glass to be removed from the protective ring body and completed for disassembly. When expanded into a ring shape, it can support the tempered glass, thus preventing it from falling. The ring support evenly distributes the edge pressure of the tempered glass, eliminating stress concentration at sharp corners. The rounded and smooth contour completely eliminates these stress concentration points, and the stress can be more evenly distributed along the entire circumference. The protective ring body forms a closed pressure ring with excellent structural rigidity, which can more effectively support the glass and disperse external forces throughout the protective ring body, making it less prone to deformation.

[0022] 2. The glass material gives the manhole cover a certain degree of transparency and glossiness. You can directly see the situation inside the well through the glass without having to open the manhole cover for inspection. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is the overall structural diagram of the present invention;

[0024] Figure 2 This is a structural diagram of the support ring of the present invention;

[0025] Figure 3 It is a partial cross-sectional view of the manhole cover of the present invention;

[0026] Figure 4 For the present invention Figure 3 A magnified view of point A;

[0027] Figure 5 This is a structural diagram of the driving member of the present invention;

[0028] Figure 6 For the present invention Figure 5 Enlarged view of point B;

[0029] Figure 7 This is a diagram of the cylinder-driven sector-shaped protection block movement structure of the present invention;

[0030] Figure 8 A side view of the spiral pattern provided on the rotating sleeve of the present invention;

[0031] Figure 9 This is a front view of the spiral pattern provided on the rotating sleeve of the present invention.

[0032] In the picture:

[0033] 1. Manhole cover seat; 11. Support ring;

[0034] 2. Manhole cover; 21. Protective ring; 211. Limiting ring; 212. Side protection ring; 213. Sector protection block; 22. Tempered glass;

[0035] 3. Driving member; 31. Rotating ring; 32. Push plate; 33. Push rod; 34. Rotating sleeve; 341. Arc groove; 35. Support frame; 36. Ring gear; 37. Gear; 38. Worm gear; 39. Screw sleeve;

[0036] 4. Support block; 41. Side panel. DETAILED DESCRIPTION

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0038] See also Figure 1-Figure 5 , a high-strength wear-resistant glass manhole cover, comprising:

[0039] The manhole cover seat 1 is assembled on the concrete manhole ring seat on the ground, and the concrete manhole ring seat is located at the manhole mouth;

[0040] The manhole cover seat 1 is made of ductile iron material. The manhole cover seat 1 is used to protect the core components of the well wall and prevent soil from sliding to the bottom of the well through the edge structure.

[0041] The manhole cover 2 includes a protective ring body 21 and a tempered glass 22. The edges of the tempered glass 22 are covered with aluminum strips. The protective ring body 21 includes a limiting ring 211, a side protection ring 212 and a fan-shaped protection block 213. The outer wall of the side protection ring 212 is hinged to the manhole cover base 1.

[0042] The tempered glass 22 is constructed using a multi-layer structure. High-temperature quenching and rapid cooling create a compressive stress layer on the surface, significantly increasing its hardness and strength. This treatment makes the surface of the tempered glass 22 more resistant to wear and scratches.

[0043] The good insulation performance of the tempered glass 22 also gives it unique advantages in some special places, such as near electrical equipment or inflammable and explosive areas, reducing safety risks.

[0044] The glass portion imparts a degree of transparency and gloss to the manhole cover, making it aesthetically pleasing. It can blend in with diverse urban landscapes and architectural styles, enhancing the city's overall image. For example, in historical and cultural districts or modern commercial areas, this type of manhole cover can create a unique visual feature. Glass is a recyclable material, and the use of composite glass manhole covers reduces reliance on non-renewable resources, meeting the requirements of environmental protection and sustainable development. Furthermore, the use of environmentally friendly materials and production processes can minimize environmental impact.

[0045] Due to the permeability of the glass, the situation in the well can be directly seen through the glass without opening the well cover 2 for inspection.

[0046] The length of the top and bottom edges of the tempered glass 22 covered by the aluminum strips does not exceed 10 cm. The aluminum strips can effectively protect the edges of the tempered glass 22. The side protection ring 212 can rotate around the manhole cover seat 1. When the tempered glass 22 is assembled in the side protection ring 212, the manhole cover seat 1 can be opened or sealed by rotation.

[0047] There are several fan-shaped protection blocks 213, one edge of the side protection ring 212 is fixed on the limiting ring 211, the aluminum strips of the tempered glass 22 are placed on the limiting ring 211 and placed in the side protection ring 212, and each fan-shaped protection block 213 is driven by the push plate 32 set in the side protection ring 212 to expand or retract synchronously. After the fan-shaped protection block 213 is retracted, a moving channel for replacing the tempered glass 22 is formed. After the fan-shaped protection block 213 is retracted, a ring body is formed to support the aluminum strips of the tempered glass 22.

[0048] Among them, the fan-shaped protection block 213 can move synchronously. When the fan-shaped protection block 213 is synchronously retracted into the side protection ring 212, the tempered glass 22 can be taken out or put into the protection ring body 21 for installation and disassembly. The above structure facilitates the replacement of the tempered glass 22 after the surface is worn or damaged.

[0049] A circle of support ring 11 is fixed on the inner wall of the manhole cover base 1. The top of the support ring 11 is provided with a ring groove for accommodating the side protection ring 212. The top surface of the support ring 11 is used to support the fan-shaped protection block 213 and accommodate the side protection ring 212.

[0050] When the tempered glass 22 rotates to seal the wellhead of the manhole cover 1, the side protection ring 212 can be screwed into the ring groove to keep the top surface of the manhole cover 2 flush. The support ring 11 supports the unfolded fan-shaped protection block 213 and the bottom of the side protection ring 212.

[0051] The interior of the side protection ring 212 is divided into a sealing chamber and a receiving chamber by a spacer ring, and the push plate 32 passes through the spacer ring;

[0052] An annular groove connected to the storage chamber is provided on the inner circumference of the side protection ring 212, and the annular groove is used for the fan-shaped protection block 213 to unfold and telescopically move through; a switch blind groove is also provided on the top of the side protection ring 212, and the switch blind groove allows the manhole cover 2 to rotate around the manhole cover seat 1 to provide a fulcrum.

[0053] The push plate 32 is guided and supported by the spacer ring, and the push plate 32 can only move along the spacer ring.

[0054] Example 1: See Figure 7 The push plate 32 is driven to move back and forth by a cylinder. The number of cylinders is consistent with the number of push plates 32. The rod of each cylinder is connected to one end of the push plate 32, and the other end of the push plate 32 passes through the side protection ring 212 and is connected to the fan-shaped protection block 213.

[0055] One end of the cylinder is hinged in the sealed chamber, and the rod of the cylinder is hinged to one end of the push plate 32. Several cylinders can be connected in series or in parallel:

[0056] Series connection: Multiple cylinders are arranged in series, with the outlet of one cylinder connected to the intake of the next. This configuration can significantly increase the total thrust output of the system, while maintaining the same pulling force as a single cylinder of the same bore.

[0057] ‌Side-by-side series connection‌: Multiple cylinders are placed side by side, with each cylinder directly connected in series with the next.

[0058] The connection mode between the cylinders is set according to the demand, and the push plate 32 is synchronously driven to move by multiple cylinders, thereby driving the sector-shaped protection block 213 to expand or contract synchronously.

[0059] Tempered glass 22 installation and removal steps:

[0060] The manhole cover 2 is rotated around the manhole cover seat 1. When the manhole cover seat 1 is in the open state, the sector-shaped protection block 213 is located above the tempered glass 22, and the limit ring 211 is located below the tempered glass 22. The cylinder is driven to drive the push plate 32 to move, thereby driving the multiple sector-shaped protection blocks 213 to move synchronously. The sector-shaped protection blocks 213 are retracted into the storage chamber, forming a moving channel. The diameter of the moving channel is larger than the diameter of the tempered glass 22. The tempered glass 22 can be taken out of the protective ring body 21 to complete the removal of the tempered glass 22.

[0061] After disassembly, place the new tempered glass 22 on the limiting ring 211, and then the cylinder drives the sector-shaped protection block 213 to unfold, and the sector-shaped protection block 213 moves to the top of the tempered glass 22, thereby realizing the installation of the tempered glass 22, and allowing the manhole cover 2 to rotate around the manhole cover seat 1 to seal the manhole cover seat 1.

[0062] Example 2: Please refer to Figure 6 The power structure for driving the push plate 32 to move in this embodiment is different. The power structure of this embodiment adopts a driving member 3, and the rest of the structure is the same. The driving member 3 in this embodiment includes a swivel 31, a push rod 33, a rotating sleeve 34 and a support frame 35. The outer circumference of the swivel 31 is provided with push rods 33 distributed at equal intervals. The number of support frames 35 and the push plate 32 is the same. The swivel sleeve 34 is clamped on the support frame 35 and rotates. A number of equally spaced arc grooves 341 are provided on the inner circumference of the swivel sleeve 34. The swivel 31 passes through the swivel sleeve 34, and the push rod 33 is inserted into the arc groove 341.

[0063] A gear ring 36 is provided on the outer wall of the rotating ring 31 , and a gear 37 is provided on the outer wall of the rotating sleeve 34 . The gear 37 is engaged with the tooth groove of the push plate 32 .

[0064] The swivel 31 is stuck by the block in the sealed chamber, and the swivel 31 rotates along the sealed chamber. A transmission shaft passes through the bottom of the side protection ring 212, and the top of the transmission shaft engages with the ring gear 36. The transmission shaft is driven to rotate manually or electrically. When the transmission shaft rotates, it can drive the ring gear 36, the swivel 31 and the push rod 33 to rotate. During the rotation, the push rod 33 passes through the arc groove 341 to drive the rotating sleeve 34 to rotate. The rotation of the rotating sleeve 34 and the gear 37 drives the push plate 32 to reciprocate on the spacer ring. Through the above structure, the rotation of the swivel 31 drives multiple swivels 31 to reciprocate, so as to realize the expansion or contraction step of the fan-shaped protection block 213.

[0065] Example 3: Please refer to Figure 8-Figure 9 The structure of the rotating sleeve 34 of this embodiment is different from that of the second embodiment, and the rest of the structure is the same as that of the second embodiment. The outer wall of the rotating sleeve 34 of this embodiment is provided with a spiral pattern, which is engaged with the worm gear 38, and the screw connected to the center of the worm gear 38 is engaged with the screw sleeve 39, and the screw sleeve 39 is fixed to the port of the push plate 32; a frame for supporting the screw is provided in the side protection ring 212, and a block is also provided to be clamped into the strip groove on the side of the screw sleeve 39.

[0066] Among them, the rotating ring 31 of this embodiment is driven to rotate by the transmission shaft manually or electrically. During the rotation, the rotating ring 31 drives the ring gear 36, the rotating ring 31 and the push rod 33 to rotate. During the rotation, the push rod 33 passes through the arc groove 341 to drive the rotating sleeve 34 and the spiral pattern to rotate. After the worm gear 38 rotates, it pushes the screw sleeve 39 to move along the block to drive the push plate 32 to move synchronously.

[0067] A support block 4 with a right-angled trapezoidal cross-section is provided on the side where the sector-shaped protection block 213 connects to the tempered glass 22, and one end of the inclined surface of the support block 4 faces the tempered glass 22. A vertical side plate 41 is fixed on the right-angled end of the support block 4. A vertical groove connected to the ring groove is provided on the inner circumference of the side protection ring 212, and the vertical groove is used for the side plate 41 to pass through.

[0068] The outer walls of the support block 4 and the side panel 41 are covered with rubber pads. The side panel 41 moves to push the tempered glass 22 to the center position, and the support block 4 moves to cooperate with the limiting ring 211 to clamp the tempered glass 22.

[0069] In order to maintain the firmness of the connection of the tempered glass 22 after assembly, the fan-shaped protection block 213 is driven to move by the push plate 32. When the tempered glass 22 is assembled, the fan-shaped protection block 213 is retracted into the storage chamber, and the tempered glass 22 is supported by the limit ring 211. After the push plate 32 drives the fan-shaped protection block 213 to expand, the fan-shaped protection block 213 drives the support block 4 to move synchronously. The inclined surface of the support block 4 contacts the aluminum strip at the edge of the tempered glass 22. As the support block 4 moves, the rubber pad is slowly squeezed until the plane of the support block 4 contacts the aluminum strip at the edge of the tempered glass 22. At this time, it cooperates with the limit ring 211 to clamp the tempered glass 22, and pushes the tempered glass 22 to the center position as the side panel 41 moves.

[0070] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A high-strength wear-resistant glass manhole cover, characterized in that: include: A manhole cover seat (1) is assembled on a concrete manhole ring seat on the ground, and the concrete manhole ring seat is located at the manhole mouth; A manhole cover (2), the manhole cover (2) includes a protective ring body (21) and tempered glass (22), the edge of the tempered glass (22) is covered with an aluminum strip, the protective ring body (21) includes a limit ring (211), a side protection ring (212) and a fan-shaped protection block (213), and the outer wall of the side protection ring (212) is hinged on the manhole cover base (1); The fan-shaped protection blocks (213) are provided in plurality, one edge of the side protection ring (212) is fixed on the limiting ring (211), the aluminum strip of the tempered glass (22) is placed on the limiting ring (211) and placed in the side protection ring (212), each fan-shaped protection block (213) is driven by a push plate (32) provided in the side protection ring (212) to synchronously expand or contract, and after the fan-shaped protection block (213) contracts, a moving channel for replacing the tempered glass (22) is formed, and after the fan-shaped protection block (213) contracts, a ring body is formed to support the aluminum strip of the tempered glass (22).

2. A high-strength wear-resistant glass manhole cover according to claim 1, characterized in that: A support ring (11) is fixed on the inner wall of the manhole cover seat (1), and a ring groove for accommodating a side protection ring (212) is provided on the top of the support ring (11). The top surface of the support ring (11) is used to support the fan-shaped protection block (213) and accommodate the side protection ring (212).

3. The high-strength wear-resistant glass manhole cover according to claim 1, characterized in that: The interior of the side protection ring (212) is divided into a sealing chamber and a receiving chamber by a spacer ring, and the push plate (32) passes through the spacer ring; An annular groove communicating with the receiving chamber is provided on the inner circumference of the side protection ring (212), and the annular groove is used for the fan-shaped protection block (213) to unfold and telescopically move through; A switch blind groove is also provided on the top of the side protection ring (212).

4. The high-strength wear-resistant glass manhole cover according to claim 1, characterized in that: The push plate (32) is driven to move back and forth by a cylinder or a driving member (3).

5. The high-strength wear-resistant glass manhole cover according to claim 4, characterized in that: The number of the cylinders is consistent with the number of the push plates (32), the rod of each cylinder is connected to one end of the push plate (32), and the other end of the push plate (32) passes through the side protection ring (212) and is connected to the fan-shaped protection block (213).

6. The high-strength wear-resistant glass manhole cover according to claim 4, characterized in that: The driving member (3) includes a rotating ring (31), a push rod (33), a rotating sleeve (34) and a support frame (35). The outer peripheral surface of the rotating ring (31) is provided with push rods (33) distributed at equal intervals. The number of the support frames (35) and the push plates (32) is the same. The rotating sleeve (34) is clamped on the support frame (35) and rotates. The inner peripheral surface of the rotating sleeve (34) is provided with a plurality of arc grooves (341) at equal intervals. The rotating ring (31) passes through the rotating sleeve (34), and the push rods (33) are inserted into the arc grooves (341).

7. The high-strength wear-resistant glass manhole cover according to claim 6, characterized in that: A gear ring (36) is provided on the outer wall of the rotating ring (31), and a gear (37) is provided on the outer wall of the rotating sleeve (34). The gear (37) is meshed with the tooth groove of the push plate (32).

8. The high-strength wear-resistant glass manhole cover according to claim 6, characterized in that: A gear ring (36) is provided on the outer wall of the rotating ring (31), and a spiral pattern is provided on the outer wall of the rotating sleeve (34), the spiral pattern is meshed with the worm wheel (38), a screw connected to the center of the worm wheel (38) is meshed with the screw sleeve (39), and the screw sleeve (39) is fixed to the end of the push plate (32); A frame supporting the screw is provided in the side protection ring (212), and a clamping block is also provided for clamping into the strip groove on the side of the screw sleeve (39).

9. A high-strength wear-resistant glass manhole cover according to claim 7 or 8, characterized in that: A support block (4) having a right-angled trapezoidal cross section is provided on the side of the sector-shaped protection block (213) that is in contact with the tempered glass (22), and one end of the inclined surface of the support block (4) faces the tempered glass (22). A vertical side plate (41) is fixed on the right-angled end of the support block (4). A vertical groove communicating with the ring groove is provided on the inner circumference of the side protection ring (212), and the vertical groove is used for the side plate (41) to pass through.

10. The high-strength wear-resistant glass manhole cover according to claim 9, characterized in that: The outer walls of the support block (4) and the side plate (41) are both covered with rubber pads. The side plate (41) moves to push the tempered glass (22) to a central position, and the support block (4) moves to cooperate with the limiting ring (211) to clamp the tempered glass (22).

Images