A municipal well lid anti-settling structure

Abstract

The utility model discloses a kind of municipal well lid anti-settling structures, it includes well lid plate, well lid seat and base, the well lid plate one end is hinged with well lid seat, the well lid seat is slidably sleeved with base, and several groups of adjusting rods are arranged between the two circumferentially, adjusting rod is threadedly connected with base while being rotatably connected with well lid seat, adjusting rod is provided with the limiting flange for lifting well lid seat, and adjusting rod upper end is provided with screwing portion, well lid seat is provided with through-hole, through-hole is set to adjusting rod upper side, and sealing plug is adapted to it. The utility model is slidably sleeved with base by setting well lid seat, and support and height adjustment are carried out using adjusting rod. When well lid seat height is not suitable due to road surface settlement, maintenance personnel need not excavate road surface, only need to open sealing plug, using special tool drives adjusting rod to rotate through through-hole, well lid seat height can be adjusted, so that it is flush with road surface.

Description

Technical Field

[0001] This utility model relates to the field of municipal engineering and water supply and drainage well cover technology, specifically to a municipal well cover anti-settlement structure. Background Technology

[0002] Municipal manhole covers, such as those for drainage wells, communication wells, and power wells, are indispensable facilities on urban roads. Traditional manhole cover structures typically consist of a manhole cover and a manhole base, with the base directly fixed to the manhole opening or the road surface base.

[0003] However, in actual use, due to the long-term impact of heavy vehicle traffic, natural settlement of roadbed materials, and temperature changes, manhole covers may protrude or fall below the road surface, resulting in uneven road surfaces. This causes severe bumps and abnormal noises when vehicles pass over them, affecting not only driving comfort and safety but also causing impact damage to the manhole cover and shaft structure. Traditionally, once a manhole cover is installed and settles, adjusting its height often requires completely demolishing the surrounding road surface and rebuilding, resulting in high maintenance costs, significant difficulty, and traffic disruption.

[0004] Therefore, there is an urgent need to design a municipal manhole cover anti-settlement structure that is structurally reasonable, easy to install and adjust, and can easily adjust the height of the manhole cover without large-scale excavation or even opening the manhole cover plate after road surface settlement, so that it always remains flush with the road surface. Utility Model Content

[0005] The purpose of this utility model is to overcome the defects existing in the background technology and provide a municipal manhole cover anti-settlement structure, which aims to solve the problems of existing manhole covers being difficult to adjust after road surface settlement, easily generating height differences, causing abnormal noise and safety hazards.

[0006] The technical solution adopted by this utility model to solve the above problems is: a municipal manhole cover anti-settlement structure, including a manhole cover plate, a manhole cover seat and a base. One end of the manhole cover plate is hinged to the manhole cover seat, and the manhole cover seat is slidably sleeved with the base. Several sets of adjusting rods are arranged circumferentially between the two. The adjusting rods are threadedly connected to the base and rotatably connected to the manhole cover seat. The adjusting rods are provided with limiting flanges for supporting the manhole cover seat, and the upper end of the adjusting rods is provided with a screwing part. The manhole cover seat has a through hole, which is set directly above the adjusting rods and is fitted with a sealing plug.

[0007] Preferably, the outer edge of the manhole cover seat adopts a double-layer edge structure, which includes an upper edge and a lower edge. The through hole is opened on the upper edge, and the lower edge is circumferentially provided with a through groove for the adjustment rod to pass through. The lower edge is also provided with a limiting protrusion below the through groove, and the limiting protrusion is provided with a limiting groove that matches the circular contour of the limiting flange.

[0008] Preferably, a plurality of grouting cylinders are provided between the upper and lower edges, and grouting ports and grouting outlets connected to the grouting cylinders are respectively provided on the upper and lower edges.

[0009] Preferably, the screwing part is fitted with a sleeve, which is located between the upper and lower edges. The sealing plug is provided with an extended cover edge, which is an annular cylindrical structure integrally formed with the sealing plug. Its inner wall is fitted with the outer wall of the screwing part, and its outer wall is fitted with the inner wall of the sleeve.

[0010] Preferably, the manhole cover seat has a drainage hole on its side wall, and the bottom surface of the drainage hole is flush with the upper surface of the lower edge.

[0011] Preferably, the base is provided with an installation step, an anti-fall net plate is installed on the installation step, the anti-fall net plate is provided with protrusions around its circumference, and the side wall of the installation step is provided with an L-shaped installation groove that matches the protrusions.

[0012] Preferably, the upper end of the sealing plug is provided with an enlarged edge, the upper end of the through hole is also provided with an enlarged groove adapted to the enlarged edge, and one side of the enlarged edge is also provided with a lug.

[0013] Preferably, the inner side of the manhole cover seat is provided with a retaining edge, the retaining edge has an annular groove, and a sound-absorbing and vibration-damping washer is provided in the annular groove.

[0014] Preferably, the upper surface of both the manhole cover plate and the manhole cover seat is provided with anti-slip protrusions.

[0015] Compared with the prior art, this utility model has the following advantages and effects:

[0016] This invention features a sliding connection between the manhole cover seat and the base, supported and height-adjusted by an adjusting rod. When road subsidence causes the manhole cover seat height to become unsuitable, maintenance personnel do not need to excavate the road surface. They only need to open the sealing plug and use a special tool to tighten the adjusting rod through the through-hole. The threaded transmission between the adjusting rod and the base allows the adjusting rod to rise and fall axially, and the limiting flange on it simultaneously lifts and lowers the manhole cover seat, thus adjusting its height to be flush with the road surface, reducing maintenance costs and traffic disruption. Furthermore, the outer edge of the manhole cover seat adopts a double-layer structure, including an upper and lower edge. This double-layer structure provides a larger horizontal support surface for the manhole cover seat, making its integration with the surrounding road structure more stable. In addition, high-strength grout (such as epoxy resin mortar or quick-drying cement) can be injected into the grouting cylinder through the grouting port on the upper edge. The grout flows down the grouting cylinder to the lower edge and exits from the grout outlet to fill gaps. After the grout solidifies, it re-solidifies the manhole cover seat and the base or roadbed into a whole, enhancing the structural stability and load-bearing capacity after height adjustment. Attached Figure Description

[0017] Figure 1 This is a perspective view of a municipal manhole cover anti-settlement structure according to an embodiment of this utility model.

[0018] Figure 2 This is a schematic diagram of the connection structure between the adjusting rod and the sealing plug in an embodiment of this utility model.

[0019] Figure 3 This is a schematic diagram of the connection structure of the adjusting rod in an embodiment of this utility model.

[0020] Figure 4 This is a structural schematic diagram of the base of an embodiment of this utility model.

[0021] Figure 5 yes Figure 1 A magnified view of the sealing plug at point A in the center.

[0022] Figure 6 This is a perspective view of a municipal manhole cover anti-settlement structure according to an embodiment of this utility model.

[0023] Attached drawings: 101 Manhole cover plate, 102 Manhole cover seat, 103 Base, 104 Adjusting rod, 105 Limiting flange, 106 Tightening part, 107 Through hole, 108 Sealing plug, 109 Upper edge, 110 Lower edge, 111 Through groove, 112 Limiting protrusion, 113 Limiting groove, 114 Grouting cylinder, 115 Grouting port, 116 Grouting outlet, 117 Sleeve, 118 Extended cover edge, 119 Drain hole, 120 Installation step, 121 Anti-fall net plate, 122 Protrusion, 123 L-shaped installation groove, 124 Expanded edge, 125 Expanded groove, 126 Lug, 127 Side guard, 128 Annular groove, 129 Noise-absorbing and vibration-damping washer, 130 Anti-slip protrusion. Detailed Implementation

[0024] The present invention will be further described in detail below with reference to the accompanying drawings and through embodiments. The following embodiments are explanations of the present invention, but the present invention is not limited to the following embodiments.

[0025] Example:

[0026] See Figure 1 - Figure 6This embodiment relates to a municipal manhole cover anti-settlement structure, specifically used for drainage wells, communication wells, and other manhole openings in municipal roads. It includes a manhole cover plate 101, a manhole cover seat 102, and a base 103. One end of the manhole cover plate 101 is hinged to the manhole cover seat 102 via a pin, allowing the manhole cover plate 101 to be easily opened and closed, facilitating subsequent maintenance of the underground facilities. The manhole cover seat 102 is slidably sleeved with the base 103, meaning the manhole cover seat 102 can slide vertically relative to the base 103. Furthermore, several sets (at least three sets) of adjusting rods 104 are circumferentially arranged between the two (manhole cover seat 102 and base 103). The adjusting rods 104 are threadedly connected to the base 103 (the base 103 has a threaded hole, and the lower part of the adjusting rod 104 has an external thread), and are rotatably connected to the manhole cover seat 102. The adjusting rod 104 is provided with a limiting flange 105 for lifting the manhole cover seat 102. The flange is used to lift the manhole cover seat 102 upward. The upper end of the adjusting rod 104 is provided with a screwing part 106 (internal hexagonal hole or special spline hole). The manhole cover seat 102 has a through hole 107. The position of the through hole 107 is directly above the screwing part 106 of the adjusting rod 104, and a sealing plug 108 is installed in the through hole 107.

[0027] Specifically, in this embodiment, the installation and adjustment process of the anti-settlement structure provided by this utility model is as follows: During installation, the base 103 is first pre-embedded and fixed at the manhole opening, and then firmly connected to the road base. Next, several sets of adjusting rods 104 are screwed into the pre-set threaded holes on the base 103, with the limiting flange 105 on the adjusting rod 104 located below a specific support surface of the manhole cover seat 102. With the cooperation of the manhole cover seat 102, the upper end (screwing part 106) of the adjusting rod 104 is rotatably connected to the manhole cover seat 102, and the weight of the manhole cover seat 102 is supported by the adjusting rod 104 through the limiting flange 105. After installation, if road surface or manhole settlement occurs, resulting in a height difference between the manhole cover seat 102 and the road surface, maintenance personnel can remove the sealing plug 108 at the through hole 107. Then, using a special tool (such as an Allen wrench or box wrench), they can turn the screwing part 106 of the adjusting rod 104 through the through hole 107, causing the adjusting rod 104 to rise or fall relative to the base 103. This, in turn, adjusts the height of the manhole cover plate 101 supported on the limiting flange 105 relative to the base 103. By adjusting all the adjusting rods 104 one by one, the upper surface of the manhole cover seat 102 and the manhole cover plate 101 can be made flush with the road surface. After adjustment, the sealing plug 108 is inserted into the through hole 107 to prevent debris from entering. Maintenance personnel can adjust the height of the manhole cover seat 102 without excavating the ground or even opening the manhole cover plate 101, reducing maintenance costs and traffic disruption.

[0028] The outer edge of the manhole cover seat 102 adopts a double-layer edge structure, including an upper edge 109 and a lower edge 110. This double-layer edge structure (upper edge 109 and lower edge 110) provides a larger horizontal support surface for the manhole cover seat 102, making its bonding with the surrounding road surface structure (such as asphalt or concrete) more stable. The through hole 107 is opened in the upper edge 109, and the lower edge 110 has a through groove 111 for the adjustment rod 104 to pass through. The lower edge 110 is also provided with a limiting protrusion 112 below the through groove 111. The limiting protrusion 112 has a limiting groove 113 that matches the circular contour of the limiting flange 105. The main body of the adjustment rod 104 passes through the through groove 111 of the lower edge 110, while the limiting flange 105 of the adjustment rod 104 is engaged in the limiting groove 113 on the limiting protrusion 112. A through hole 107 is provided on the upper edge 109, allowing the adjustment tool to pass through the upper edge 109 and directly drive the screwing part 106 located below the through hole 107. This structure is compact, concealing the adjustment rod 104 within the edge structure of the manhole cover seat 102, ensuring good stability without affecting the main function of the manhole cover seat 102.

[0029] A plurality of grouting cylinders 114 are provided between the upper edge 109 and the lower edge 110. Each of the upper edge 109 and the lower edge 110 has an injection port 115 and an outlet 116 connected to the grouting cylinders 114. This structure is used for secondary reinforcement after the height of the manhole cover seat 102 is adjusted. When the manhole cover seat 102 is adjusted to its final height flush with the road surface, a gap exists between the manhole cover seat 102 and the base 103 due to the adjustment. At this time, high-strength grout (such as epoxy resin mortar or quick-drying cement) can be injected into the grouting cylinders 114 through the injection port 115 of the upper edge 109. The grout will flow along the grouting cylinders 114 to the lower edge 110 and out through the outlet 116 to fill the gap. After the grout solidifies, the manhole cover seat 102 and the base 103 or the roadbed are re-solidified into a whole, enhancing the structural stability and load-bearing capacity after height adjustment.

[0030] See Figure 2 and Figure 3The screw-on part 106 is fitted with a sleeve 117, which is located between the upper edge 109 and the lower edge 110. The sealing plug 108 is provided with an extended cover edge 118, which is an annular cylindrical structure integrally formed with the sealing plug 108. Its inner wall is fitted with the outer wall of the screw-on part 106, and its outer wall is fitted with the inner wall of the sleeve 117. When the sealing plug 108 is inserted, its extended cover edge 118 (annular cylindrical structure) will simultaneously adhere to the inner wall of the screw-on part 106 and the inner wall of the sleeve 117 on its outer wall, forming a sealing effect. The design of sleeve 117 isolates the screwing part 106 from the grout filling the outer roadbed, preventing the screwing part 106 from failing (if mortar seeps into the inner hexagonal hole). At the same time, sleeve 117 (the height of which is equal to the distance between the upper edge 109 and the lower edge 110) forms upper and lower supports between the upper edge 109 and the lower edge 110, improving the structural strength.

[0031] See Figure 2 The manhole cover seat 102 has a drain hole 119 on its side wall. The drain hole 119 is located on the side wall of the manhole cover seat 102, and its bottom is flush with the upper surface of the lower edge 110 (i.e. the "bottom surface" of the upper edge 109). This allows water accumulated on the surface of the upper edge 109 to be discharged through the drain hole 119 in a timely manner, keeping the sleeve 117 and the screwing part 106 dry and extending their service life.

[0032] See Figure 4 The base 103 has an installation step 120, on which a fall-prevention net 121 is installed. The fall-prevention net 121 has protrusions 122 circumferentially arranged, and the side wall of the installation step 120 has an L-shaped installation groove 123 that matches the protrusions 122. During installation, the protrusions 122 of the fall-prevention net are aligned with the vertical opening of the L-shaped installation groove 123 and inserted. Then, the fall-prevention net is rotated to allow the protrusions 122 to slide into the horizontal opening of the L-shaped groove and lock in place. When maintenance personnel open the manhole cover 101 to work in the well, the fall-prevention net 121 effectively prevents personnel or (larger) objects from falling into the well, improving operational safety.

[0033] See Figure 5 The sealing plug 108 has an enlarged edge 124 at its upper end, and the through hole 107 has an enlarged groove 125 adapted to the enlarged edge 124 at its upper end. A lug 126 is also provided on one side of the enlarged edge 124. When the sealing plug 108 needs to be removed for height adjustment, maintenance personnel can use a tool (such as a screwdriver) to pry the lug 126, thereby easily pulling the sealing plug 108 out of the through hole 107.

[0034] See Figure 6The manhole cover seat 102 has a retaining edge 127 on its inner side, and the retaining edge 127 has an annular groove 128. A sound-absorbing and vibration-damping washer 129 is disposed in the annular groove 128. When the manhole cover plate 101 is closed, its inner edge will contact the retaining edge 127 of the manhole cover seat 102. In this invention, a sound-absorbing and vibration-damping washer 129 (usually made of elastic material such as rubber with a metal wire core) is pre-set in the annular groove 128 of the retaining edge 127. When the manhole cover plate 101 is closed, the washer is pressed between the manhole cover plate 101 and the manhole cover seat 102, which plays a buffering role. When a vehicle runs over it, it can effectively absorb the impact to eliminate the "clanging" noise caused by the rigid (such as metal) contact between the manhole cover plate 101 and the manhole cover seat 102. In addition, the upper surfaces of the manhole cover plate 101 and the manhole cover seat 102 are provided with anti-slip protrusions 130. The anti-slip protrusions 130 can adopt grid-like, striped, dotted, cross-shaped or other raised patterns. The anti-slip protrusions 130 can effectively prevent pedestrians and non-motorized vehicles from slipping on the manhole cover by increasing friction. At the same time, it increases the grip of motor vehicle tires and improves the safety of driving and pedestrians.

[0035] The above description in this specification is merely illustrative of the present invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, as long as they do not depart from the content of this specification or exceed the scope defined in the claims, all of which shall fall within the protection scope of this invention.

Claims

1. A municipal manhole cover anti-settling structure, characterized in that, The device includes a manhole cover plate, a manhole cover seat, and a base. One end of the manhole cover plate is hinged to the manhole cover seat, and the manhole cover seat is slidably sleeved with the base. Several sets of adjusting rods are circumferentially arranged between the two. The adjusting rods are threadedly connected to the base and rotatably connected to the manhole cover seat. The adjusting rods are provided with limiting flanges for supporting the manhole cover seat, and the upper end of the adjusting rods is provided with a screwing part. The manhole cover seat has a through hole, which is positioned directly above the adjusting rods and is fitted with a sealing plug.

2. The anti-settling structure of a municipal manhole cover according to claim 1, characterized in that: The outer edge of the manhole cover seat adopts a double-layer edge structure, which includes an upper edge and a lower edge. The through hole is opened on the upper edge, and the lower edge is circumferentially provided with a through groove for the adjustment rod to pass through. The lower edge is also provided with a limiting protrusion below the through groove, and the limiting protrusion is provided with a limiting groove that matches the circular contour of the limiting flange.

3. The anti-settling structure of a municipal manhole cover according to claim 2, characterized in that: Several grouting cylinders are provided between the upper and lower edges, and grouting ports and grouting outlets connected to the grouting cylinders are respectively provided on the upper and lower edges.

4. The anti-settling structure of a municipal manhole cover according to claim 2, characterized in that: The screwing part is fitted with a sleeve, which is located between the upper and lower edges. The sealing plug is provided with an extended cover edge, which is an annular cylindrical structure integrally formed with the sealing plug. Its inner wall is fitted with the outer wall of the screwing part, and its outer wall is fitted with the inner wall of the sleeve.

5. The anti-settling structure of a municipal manhole cover according to claim 2, characterized in that: The manhole cover seat has a drainage hole on its side wall, and the bottom surface of the drainage hole is flush with the upper surface of the lower layer.

6. The municipal manhole cover anti-settlement structure according to claim 1, characterized in that: The base is provided with an installation step, and a fall protection net plate is installed on the installation step. The fall protection net plate is provided with protrusions around its circumference, and the side wall of the installation step is provided with an L-shaped installation groove that matches the protrusions.

7. The anti-settling structure of a municipal manhole cover according to claim 1, characterized in that: The sealing plug has an enlarged edge at its upper end, and the through hole has an enlarged groove at its upper end that matches the enlarged edge. A lug is also provided on one side of the enlarged edge.

8. The municipal manhole cover anti-settlement structure according to claim 1, characterized in that: The inner side of the manhole cover seat is provided with a retaining edge, and the retaining edge has an annular groove, in which a sound-absorbing and vibration-damping washer is provided.

9. The municipal manhole cover anti-settlement structure according to claim 1, characterized in that: The manhole cover plate and the upper surface of the manhole cover base are both provided with anti-slip protrusions.

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