Stainless steel manhole cover with supporting ribs
By setting an arc-shaped groove at the lower end of the stainless steel manhole cover's outer frame, and combining it with load-bearing, transmission, guiding, resetting, and support mechanisms, the problem of insufficient load-bearing capacity of the manhole cover is solved, thereby improving the load-bearing capacity and extending its service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGXI CHANGKUN STEEL STRUCTURE CO LTD
- Filing Date
- 2025-06-24
- Publication Date
- 2026-06-26
AI Technical Summary
The existing stainless steel manhole covers have insufficient load-bearing capacity, making them prone to damage and affecting their service life.
An arc-shaped groove is formed in a ring array at the lower end of the stainless steel manhole cover's outer frame. Through a combination of load-bearing, transmission, guiding, resetting, supporting, and positioning mechanisms, external pressure is dispersed and transmitted, thereby improving the load-bearing capacity.
It significantly enhances the load-bearing capacity of manhole covers, improving their service life and practicality.
Smart Images

Figure CN224412626U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of manhole cover technology, and in particular to a stainless steel manhole cover with supporting ribs. Background Technology
[0002] Manhole covers are used to cover deep wells in roads or homes to prevent people or objects from falling in. They can be classified by material, such as stainless steel manhole covers, high-strength fiber cement concrete manhole covers, and resin manhole covers, and are generally available in round and square shapes. They can be used in green belts, sidewalks, driveways, docks, alleyways, etc.
[0003] Chinese patent document CN205934982U discloses a stainless steel manhole cover. The stainless steel manhole cover includes an outer frame and an inner frame. The inner frame is fitted inside the outer frame. A lifting post is provided at each corner of the inner frame. The upper surface of the lifting post has a circular first through hole, and the lower part of the first through hole has a screw hole. Fasteners are used to fix the lifting post through the screw hole, and the head diameter of the fastener matches the diameter of the first through hole. Because the stainless steel manhole cover has a lifting post, and the upper end of the first through hole of the lifting post is tightened with fasteners, there are no gaps, preventing dust from entering the lifting post. When maintenance is needed, the fasteners are unscrewed, and the stainless steel manhole cover is opened with a lifting tool to complete the maintenance work.
[0004] While the aforementioned patent documents can prevent dust from entering the lifting column during implementation, they cannot improve the load-bearing capacity of the manhole cover. As a result, stainless steel manhole covers are prone to damage during use due to their light weight, which affects their service life. Utility Model Content
[0005] The main purpose of this utility model is to provide a stainless steel manhole cover with supporting ribs, which can effectively solve the problem of not being able to improve the load-bearing capacity of the manhole cover.
[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0007] A stainless steel manhole cover with supporting ribs includes an outer frame. The lower end of the outer surface of the outer frame has a plurality of arc-shaped grooves in a ring array communicating with the outside. Positioning holes are symmetrically formed on the top walls of the inner cavities of each of the arc-shaped grooves. A bearing mechanism is fixedly connected to the top wall of the inner cavity of the outer frame. A plurality of conduction mechanisms are fixedly connected in a ring array to the lower part of the bearing mechanism. A guide mechanism is fixedly connected to the middle position of the lower part of the bearing mechanism. A reset component is slidably connected to the lower part of the reset component. A support mechanism is fixedly connected to the lower side of the reset component. The lower parts of the plurality of conduction mechanisms are all fixedly connected to the upper side of the support mechanism. A plurality of positioning mechanisms are fixedly connected in a ring array to the outside of the support mechanism, and each positioning mechanism is movably connected to the inner cavity of its corresponding arc-shaped groove.
[0008] Preferably, the bearing mechanism includes a bearing frame, and a fixed plate is fixedly connected to the middle of the inner cavity of the bearing frame.
[0009] Preferably, the transmission mechanism includes a first fixed seat, a connecting plate rotatably connected to the middle of the first fixed seat, a second fixed seat rotatably connected to the lower part of the connecting plate, and the upper end of the outer surface of the first fixed seat is fixedly connected to the outer side of the lower end of the fixed plate.
[0010] Preferably, the guiding mechanism includes a guide post, and guide blocks are symmetrically fixedly connected to the lower part of the outer surface of the guide post, and the upper part of the outer surface of the guide post is fixedly connected to the middle part of the lower end of the fixed disk.
[0011] Preferably, the reset assembly includes a fixed housing, with symmetrical limit grooves on the left and right walls of the inner cavity of the fixed housing, a spring block fixedly connected to the bottom wall of the inner cavity of the fixed housing, two guide blocks slidably connected to the inner cavities of the corresponding limit grooves, and the lower end of the guide post fixedly connected to the upper end of the outer surface of the spring block.
[0012] Preferably, the support mechanism includes a support frame, a tripod is fixedly connected to the lower part of the inner surface of the support frame, and the upper middle part of the tripod is fixedly connected to the lower end of the outer surface of the fixed housing, and the outer surface of the fixed seat is fixedly connected to the upper part of the inner surface of the support frame.
[0013] Preferably, the positioning mechanism includes an arc-shaped plate, with threaded grooves symmetrically formed at the front and rear of the lower end of the outer surface of the arc-shaped plate. Each of the two threaded grooves is threaded with a fastening screw, and the outer surface of the arc-shaped plate is fixedly connected to the outer surface of the support frame. The arc-shaped plate is movably connected to the corresponding arc-shaped groove cavity, and the two fastening screws are threadedly connected to the corresponding positioning hole cavity.
[0014] Compared with the prior art, the present invention has the following beneficial effects:
[0015] 1. This utility model uses a bearing mechanism to support several transmission mechanisms. The transmission mechanism can distribute and transmit the downward pressure on the manhole cover frame and the bearing mechanism. At the same time, the guiding mechanism can guide the movement of the bearing mechanism, improving the practicality of the device. The reset component can reset the bearing mechanism upward. The support mechanism can support the manhole cover frame. The positioning mechanism can install and fix the support mechanism, improving the practicality and versatility of the device.
[0016] 2. When the upper part of the manhole cover frame is subjected to downward pressure, the fixing plate will deform synchronously with the upper part of the manhole cover frame, thereby driving several connecting plates to transmit the downward pressure to the support frame. This allows the pressure on the manhole cover frame embedded in the road to be dispersed, significantly enhancing the load-bearing capacity of the manhole cover frame itself and improving the practicality and versatility of the device. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0018] Figure 2 This is a schematic diagram of the bearing mechanism and the transmission mechanism of this utility model;
[0019] Figure 3 This is a schematic diagram of the reset component and guide mechanism of this utility model;
[0020] Figure 4 This is a schematic diagram of the support mechanism and positioning mechanism of this utility model.
[0021] In the diagram: 1. Outer frame of manhole cover; 11. Arc groove; 12. Positioning hole; 2. Bearing mechanism; 21. Bearing frame; 22. Fixing plate; 3. Transmission mechanism; 31. Fixing seat one; 32. Connecting plate; 33. Fixing seat two; 4. Reset assembly; 41. Fixing sleeve; 42. Limiting groove; 43. Spring block; 5. Guide mechanism; 51. Guide column; 52. Guide block; 6. Support mechanism; 61. Support frame; 62. Tripod; 7. Positioning mechanism; 71. Arc plate; 72. Threaded groove; 73. Fastening screw. Detailed Implementation
[0022] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.
[0023] like Figure 1As shown, a stainless steel manhole cover with supporting ribs includes an outer frame 1. The lower outer surface of the outer frame 1 has a plurality of arc-shaped grooves 11 arranged in a ring array, communicating with the outside. Positioning holes 12 are symmetrically arranged on the top wall of each arc-shaped groove 11. A bearing mechanism 2 is fixedly connected to the top wall of the inner cavity of the outer frame 1, which can support a plurality of transmission mechanisms 3. A plurality of transmission mechanisms 3 are fixedly connected in a ring array at the lower part of the bearing mechanism 2, which can disperse and transmit the downward pressure experienced by the outer frame 1 and the bearing mechanism 2. A guide mechanism 5 is fixedly connected to the lower middle position of the bearing mechanism 2. The system can guide the movement of the bearing mechanism 2. The lower part of the reset component 4 is slidably connected to the reset component 4, which can reset the bearing mechanism 2 upward. The lower side of the reset component 4 is fixedly connected to the support mechanism 6, which can support the outer frame 1 of the manhole cover. The lower part of several transmission mechanisms 3 is fixedly connected to the upper side of the support mechanism 6. Several positioning mechanisms 7 are fixedly connected to the outer ring array of the support mechanism 6, which can install and fix the support mechanism 6. The positioning mechanisms 7 are respectively movably connected to the inner cavity of the corresponding arc groove 11.
[0024] To achieve the purpose of bearing the load of several transmission mechanisms 3, refer to... Figure 2 The bearing mechanism 2 includes a bearing frame 21, and a fixed plate 22 is fixedly connected to the middle of the inner cavity of the bearing frame 21, which can realize the function of bearing several transmission mechanisms 3.
[0025] To achieve the goal of distributing and transmitting the downward pressure experienced by the manhole cover frame 1 and the load-bearing mechanism 2, refer to... Figure 2 The transmission mechanism 3 includes a fixed seat 31, a connecting plate 32 rotatably connected to the middle of the fixed seat 31, a fixed seat 33 rotatably connected to the lower part of the connecting plate 32, and the upper end of the outer surface of the fixed seat 31 is fixedly connected to the lower outer side of the fixed plate 22.
[0026] When the upper end of the manhole cover outer frame 1 deforms, the fixing plate 22 will deform synchronously with the upper end of the manhole cover outer frame 1. When the fixing plate 22 moves, it will drive several connecting plates 32 to squeeze the support frame 61, thereby dispersing and transmitting the downward pressure on the upper end of the manhole cover outer frame 1.
[0027] To guide the movement of the bearing mechanism 2, see [reference needed]. Figure 3 The guide mechanism 5 includes a guide post 51. Guide blocks 52 are symmetrically fixedly connected to the lower part of the outer surface of the guide post 51. These blocks can guide and limit the lifting and sliding of the guide post 51. The upper part of the outer surface of the guide post 51 is fixedly connected to the middle part of the lower end of the fixed plate 22.
[0028] To achieve the goal of resetting the bearing mechanism 2 upwards, refer to... Figure 3 The reset assembly 4 includes a fixed housing 41. The left and right walls of the inner cavity of the fixed housing 41 have symmetrical limit grooves 42. A spring block 43 is fixedly connected to the bottom wall of the inner cavity of the fixed housing 41, which can push the guide column 51 to move upward, thereby driving the fixed plate 22 and the outer frame of the well cover 1 to reset upward. The two guide blocks 52 are slidably connected to the inner cavity of the corresponding limit grooves 42. The lower end of the guide column 51 is fixedly connected to the upper end of the outer surface of the spring block 43.
[0029] To achieve the purpose of supporting the outer frame 1 of the manhole cover, refer to... Figure 4 The support mechanism 6 includes a support frame 61, which can support the outer frame 1 of the manhole cover. A tripod 62 is fixedly connected to the lower part of the inner surface of the support frame 61, which can support the support frame 61. The upper middle part of the tripod 62 is fixedly connected to the lower part of the outer surface of the fixed sleeve 41. The outer surface of the fixed seat 33 is fixedly connected to the upper part of the inner surface of the support frame 61.
[0030] To achieve the purpose of installing and securing support mechanism 6, please refer to... Figure 4 The positioning mechanism 7 includes an arc-shaped plate 71. The lower end of the outer surface of the arc-shaped plate 71 has symmetrically formed threaded grooves 72 at its front and rear. Each of the two threaded grooves 72 has a threaded fastening screw 73 connected to it. This allows the fastening screw 73 to pass through the corresponding threaded groove 72 and tighten into the corresponding positioning hole 12, thus fixing the arc-shaped plate 71 within the corresponding arc-shaped groove 11. The outer surface of the arc-shaped plate 71 is fixedly connected to the outer surface of the support frame 61, while the arc-shaped plate 71 is movably connected to the corresponding arc-shaped groove 11. The two fastening screws 73 are threadedly connected to the corresponding positioning holes 12.
[0031] The working principle of this utility model is as follows: When the outer frame 1 of the manhole cover is subjected to a large external pressure, the fixing plate 22 will deform downward along with the outer frame 1 of the manhole cover, thereby driving the guide column 51 to slide towards the inner cavity of the fixing sleeve 41. At this time, several connecting plates 32 will simultaneously squeeze the support frame 61, thereby dispersing the pressure on the fixing plate 22 outward, thus reducing the pressure on the upper end of the outer frame 1 of the manhole cover. After the pressure on the upper end of the outer frame 1 of the manhole cover is removed, the elastic force of the spring block 43 will push the guide column 51 upward to the initial position, thereby enabling the fixing plate 22 to provide stable support for the upper end of the outer frame 1 of the manhole cover.
[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A stainless steel manhole cover with support ribs, comprising a manhole cover outer frame body (1), characterized in that: The outer surface of the manhole cover frame (1) has several arc-shaped grooves (11) that communicate with the outside. The top walls of the inner cavity of the arc-shaped grooves (11) are symmetrically provided with positioning holes (12). The top wall of the inner cavity of the manhole cover frame (1) is fixedly connected to a bearing mechanism (2). The lower part of the bearing mechanism (2) is fixedly connected to several conduction mechanisms (3). The middle position of the lower part of the bearing mechanism (2) is fixedly connected to a guide mechanism (5). The upper part of the guide mechanism (5) is slidably connected to a reset component (4). The lower side of the reset component (4) is fixedly connected to a support mechanism (6). The lower part of the several conduction mechanisms (3) is fixedly connected to the upper side of the support mechanism (6). The outer ring array of the support mechanism (6) is fixedly connected to several positioning mechanisms (7). The several positioning mechanisms (7) are movably connected to the inner cavity of the corresponding arc-shaped grooves (11).
2. The stainless steel manhole cover with support ribs according to claim 1, characterized in that: The bearing mechanism (2) includes a bearing frame (21), and a fixed plate (22) is fixedly connected to the middle of the inner cavity of the bearing frame (21).
3. The reinforced stainless steel manhole cover of claim 2, wherein: The transmission mechanism (3) includes a fixed seat (31), a connecting plate (32) is rotatably connected to the middle of the fixed seat (31), a fixed seat (33) is rotatably connected to the lower part of the connecting plate (32), and the upper end of the outer surface of the fixed seat (31) is fixedly connected to the lower outer side of the fixed plate (22).
4. The reinforced stainless steel manhole cover as claimed in claim 2, wherein: The guiding mechanism (5) includes a guide post (51), and guide blocks (52) are symmetrically fixedly connected to the lower part of the outer surface of the guide post (51). The upper part of the outer surface of the guide post (51) is fixedly connected to the middle part of the lower end of the fixed disk (22).
5. The reinforced stainless steel manhole cover of claim 4, wherein: The reset assembly (4) includes a fixed housing (41), with symmetrical limit grooves (42) on the left and right walls of the inner cavity of the fixed housing (41), and a spring block (43) fixedly connected to the bottom wall of the inner cavity of the fixed housing (41). The two guide blocks (52) are slidably connected to the inner cavity of the corresponding limit grooves (42), and the lower end of the guide post (51) is fixedly connected to the upper end of the outer surface of the spring block (43).
6. The reinforced stainless steel manhole cover of claim 3, wherein: The support mechanism (6) includes a support frame (61), a tripod (62) is fixedly connected to the lower part of the inner surface of the support frame (61), and the middle part of the upper end of the tripod (62) is fixedly connected to the lower end of the outer surface of the fixed sleeve (41). The outer surface of the second fixed seat (33) is fixedly connected to the upper part of the inner surface of the support frame (61).
7. The reinforced stainless steel manhole cover of claim 6, wherein: The positioning mechanism (7) includes an arc plate (71). The lower end of the outer surface of the arc plate (71) is symmetrically provided with threaded grooves (72) at the front and rear. The inner cavities of the two threaded grooves (72) are threaded with fastening screws (73). The outer surface of the arc plate (71) is fixedly connected to the outer surface of the support frame (61). The arc plate (71) is movably connected to the inner cavity of the corresponding arc groove (11). The two fastening screws (73) are threadedly connected to the inner cavity of the corresponding positioning hole (12).