A prefabricated inspection well for roads

Abstract

This invention discloses a prefabricated manhole for roads, belonging to the field of manhole technology. It includes a connected prefabricated manhole cylinder, a heightening unit, and a top-mounted manhole cylinder connected in sequence. The heightening unit comprises several connected prefabricated manhole cylinders. An anti-fall warning mechanism is installed inside the top-mounted manhole cylinder. The anti-fall warning mechanism includes two symmetrically arranged mounting shafts. The mounting shafts are slidably mounted in mounting annular grooves on the inner wall of the top-mounted manhole cylinder. An unfolding positioning mechanism is installed within the mounting annular grooves. The mounting shafts and the unfolding positioning mechanism are positioned opposite each other. Several arc-shaped protective plates are installed on the mounting shafts. Using this prefabricated manhole for roads, when not under maintenance, the anti-fall warning mechanism retracts inside the top-mounted manhole cylinder, and the multiple arc-shaped protective plates provide an anti-fall function. During maintenance, after opening the manhole cover, the semi-circular sliding plate is raised to the manhole opening position, and the arc-shaped protective plates unfold, providing a protective warning function.

Description

Technical Field

[0001] This invention relates to the field of inspection well technology, and in particular to a prefabricated inspection well for roads. Background Technology

[0002] In municipal and highway engineering projects, inspection wells need to be installed at regular intervals. Inspection wells are installed to facilitate the maintenance and installation of underground infrastructure such as power supply, water supply, drainage, sewage, communications, cable television, gas pipes, and streetlights. They are generally located at pipe intersections, bends, changes in pipe diameter or slope, and at regular intervals along straight pipe sections to facilitate periodic inspections of ancillary structures.

[0003] In existing technologies, prefabricated structures are used to shorten project timelines, i.e., prefabricated components are assembled on-site. A search revealed patent CN218597225U, which discloses a prefabricated inspection manhole for highways, including an upper manhole frame, a lower manhole frame, and a manhole cover. The upper and lower manhole frames are connected by bolts for sealing. An inlet is located at the top of the upper manhole frame, and the manhole cover is placed at the inlet. A rubber sealing ring is provided on the lower end of the manhole cover. Multiple inlet pipes are provided on all four sides of the upper manhole frame, and each inlet pipe contains a variable-diameter rubber tube. The larger end of the variable-diameter rubber tube is directly connected to the inner wall of the inlet pipe. A sealing mechanism is used to achieve a seal between the manhole cover and the upper manhole frame, and the variable-diameter rubber tubes are used to achieve a seal between the inlet pipe and the roadway.

[0004] Patent CN217923992U discloses a prefabricated inspection well structure, including a cement base, a cement-cast well, a water pipe installation channel, and an inspection well. The cement-cast well is fixed to the top of the cement base. Two water pipe installation channels are fixedly installed on the outer wall of the cement-cast well. An inspection well is fixedly installed inside the cement-cast well. The inspection well includes a first assembly cylinder and several second assembly cylinders, all of which are inserted into the cement-cast well. The cement-cast well protects the inspection well from direct pressure from the soil layer, reducing the probability of pressure damage. Furthermore, a drainage well is provided next to the inspection well, allowing surface water to drain into the water pipe installation channel, preventing water from entering the inspection well and causing wall flow, further reducing the probability of damage and preventing collapse during use, effectively improving its safety factor.

[0005] The existing technology still has the following problems: (1) The inspection wells set on the road have no protective warning mechanism, which means that warning signs need to be placed on the road when maintenance is carried out, resulting in poor protective performance.

[0006] (2) Existing inspection wells are generally equipped with anti-fall nets, but they need to be removed during maintenance and then fixed again after maintenance, which is a cumbersome operation. Summary of the Invention

[0007] The purpose of this invention is to provide a prefabricated inspection well for roads, thereby solving the aforementioned technical problems.

[0008] To achieve the above objectives, the present invention provides a prefabricated manhole for roads, comprising a connecting prefabricated manhole cylinder, a heightening unit, and a top mounting manhole cylinder connected in sequence. The heightening unit includes several connecting prefabricated manhole cylinders connected in sequence. A manhole cover is provided on the top mounting manhole cylinder. An anti-fall warning mechanism is provided inside the top mounting manhole cylinder. The anti-fall warning mechanism includes two symmetrically arranged mounting shafts. The mounting shafts are slidably disposed in a mounting ring groove on the inner wall of the top mounting manhole cylinder. An unfolding positioning mechanism is provided in the mounting ring groove. The mounting shafts are arranged opposite to the unfolding positioning mechanism. Several arc-shaped protective plates are provided on the mounting shafts.

[0009] Preferably, the mounting bracket includes a semi-circular sliding plate, on which at least two rotating shafts are mounted via bearing seats, and several arc-shaped protective plates are fixed side by side on the rotating shafts.

[0010] Preferably, the circular angle corresponding to the arc-shaped protective plate is 90°-180°, and the arc-shaped protective plates on the two mounting brackets are staggered.

[0011] Preferably, the unfolding positioning mechanism includes a plurality of drive racks and a plurality of elastic telescopic components, wherein the plurality of drive racks are circumferentially distributed in the mounting ring groove, and the drive racks are arranged opposite to the meshing gears of the rotating shaft; Several elastic telescopic components are circumferentially distributed in the mounting ring groove. Each elastic telescopic component includes a hollow fixing screw tube, and a telescopic rod is connected inside the hollow fixing screw tube through an ejector spring. The top of the telescopic rod is inclined.

[0012] Preferably, there are two rotating shafts arranged in a V-shape, with one rotating shaft higher than the other, and a transmission gear is provided on the semi-circular sliding plate, which is located between the meshing gear of the drive rack and the rotating shaft.

[0013] Preferably, there are three rotating shafts arranged in a trapezoidal shape, with the height of the three rotating shafts increasing sequentially.

[0014] Preferably, the curved protective plate is provided with an extension mechanism, which includes a trapezoidal mounting slider, which is disposed in a curved groove on the side of the curved protective plate. A rotating screw is provided on the trapezoidal mounting slider, and a curved extension plate is provided on the rotating screw. A reflective strip is provided on the curved extension plate.

[0015] Preferably, the trapezoidal mounting slider is provided with at least one elastic positioning component, the elastic positioning component includes a clamping spring, one end of the clamping spring is connected to a mounting plate, one side of the mounting plate is provided with an operating groove, the mounting plate is threaded into the mounting through hole of the trapezoidal mounting slider, a limit ring is fixed at one end of the mounting through hole opposite to the arc-shaped protective plate, and a ball is provided between the limit ring and the other end of the clamping spring.

[0016] Preferably, the bottom of the connecting assembly well is a sealed structure, the two ends of the connecting assembly well are open structures, and U-shaped foot pedals are provided on the inner walls of both the connecting assembly well and the connecting assembly well.

[0017] Preferably, both the open end of the connecting assembly well tube and the end connected to the assembly well tube are provided with a docking groove. The docking groove is provided with a limiting groove, which includes a vertical sliding groove and a horizontal arc groove that are connected. The other end of the connecting assembly well tube and the bottom of the top mounting well tube are provided with limiting columns.

[0018] Therefore, the present invention adopts the above-mentioned prefabricated inspection well for roads, which has the following beneficial effects: when not under maintenance, the anti-fall warning mechanism is retracted inside the top-mounted well cylinder, and multiple arc-shaped protective plates play an anti-fall role. During maintenance, after opening the well cover, the semi-circular sliding plate is raised to the well opening position, the arc-shaped protective plates unfold, and the arc-shaped protective plates play a protective and warning role.

[0019] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0020] Figure 1 This is an exploded view of a prefabricated inspection well for road use according to the present invention; Figure 2 This is a schematic diagram of the connection and assembly well shaft structure of the present invention. Figure 3 This is a schematic diagram of the mounting bracket structure of the present invention; Figure 4 This is a schematic diagram of the elastic telescopic component structure of the present invention; Figure 5 This is a schematic diagram of the extended mechanism structure of the present invention; Figure 6 This is a schematic diagram of the anti-fall warning mechanism of the present invention when deployed; Figure 7 This is a schematic diagram of the structure of the arc-shaped extended plate of the present invention when unfolded. Figure 8 This is a diagram showing the arrangement of the rotating shaft in Embodiment 2 of the present invention.

[0021] Figure Labels 1. Connecting assembly shaft; 2. Connecting assembly shaft; 3. Installing shaft at the top; 31. Installing ring groove; 4. Manhole cover; 5. Fall protection warning mechanism; 51. Installing shaft bracket; 511. Semi-circular sliding plate; 512. Rotating shaft; 52. Arc-shaped protective plate; 521. Arc-shaped sliding groove; 53. Meshing gear; 54. Transmission gear; 6. Deployment positioning mechanism; 61. Drive rack; 62. Elastic telescopic component; 621. Hollow fixed helical tube; 622 7. Ejection spring; 623. Telescopic rod; 7. Extension mechanism; 71. Trapezoidal mounting slider; 711. Mounting through hole; 72. Rotating screw; 73. Arc-shaped extension plate; 74. Reflective strip; 75. Elastic positioning component; 751. Tightening spring; 752. Mounting plate; 753. Operating groove; 754. Limiting ring; 755. Rolling ball; 8. U-shaped foot pedal; 9. Connecting groove; 10. Vertical slide groove; 11. Horizontal arc-shaped groove; 12. Limiting post. Detailed Implementation

[0022] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0023] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0024] Example 1 like Figure 1 As shown, a prefabricated inspection manhole for roads includes a connecting prefabricated manhole cylinder 1, a heightening unit, and a top-mounted manhole cylinder 3 connected in sequence. The heightening unit includes several connecting prefabricated manhole cylinders 2 connected in sequence, and a manhole cover 4 is installed on the top-mounted manhole cylinder 3. The bottom of the connecting prefabricated manhole cylinder 1 is a sealed structure, and a through hole for connecting pipes is opened on its circumference. This is a conventional setting in existing technology, and the through hole can be set according to the actual engineering layout. Figure 2As shown, the connecting assembly well 2 has open ends. U-shaped footrests 8 are provided on the inner walls of both the connecting assembly well 1 and the connecting assembly well 2 for easy climbing by maintenance personnel. Both the open end of the connecting assembly well 1 and one end of the connecting assembly well 2 have mating grooves 9. These grooves have limiting grooves, including a vertical sliding groove 10 and a horizontal arc-shaped groove 11. Limiting posts 12 are provided at the other end of the connecting assembly well 2 and at the bottom of the top-mounted well 3. During on-site assembly, the limiting post 12 slides down the vertical sliding groove 10 and rotates to enter the horizontal arc-shaped groove 11. This vertically limits the movement between the wells, eliminating the need for bolt fixing; subsequent waterproofing and foundation reinforcement are sufficient.

[0025] A fall protection warning mechanism 5 is installed inside the top mounting shaft 3. The fall protection warning mechanism 5 includes two symmetrically arranged mounting brackets 51, which are slidably disposed within the mounting ring grooves 31 on the inner wall of the top mounting shaft 3. Figure 3 As shown, the mounting bracket 51 includes a semi-circular sliding plate 511. Two rotating shafts 512 are mounted on the semi-circular sliding plate 511 via bearing seats. Two arc-shaped protective plates 52 are fixed side by side on the rotating shafts 512. The two rotating shafts 512 are arranged in a V-shape, with one rotating shaft 512 higher than the other to prevent the arc-shaped protective plates 52 from touching. Since the two rotating shafts 512 are far from the inner wall of the top mounting shaft 3, a transmission gear 54 needs to be set on the semi-circular sliding plate 511 to engage the deployment positioning mechanism 6. The circular angle corresponding to the arc-shaped protective plate 52 is 180° (the size of the circular angle can be adjusted according to actual needs). The arc-shaped protective plates 52 on the two mounting brackets 51 are staggered in both the horizontal and vertical directions.

[0026] An unfolding positioning mechanism 6 is provided within the mounting annular groove 31. The unfolding positioning mechanism 6 includes several drive racks 61 and several elastic telescopic components 62. The drive racks 61 are circumferentially distributed within the mounting annular groove 31. A transmission gear 54 is positioned between the drive racks 61 and the meshing gear 53 of the rotating shaft 512. When the semi-circular sliding plate 511 is lifted, the drive racks 61 cause the transmission gear 54 and the meshing gear 53 to rotate, thereby causing the rotating shaft 512 to unfold the arc-shaped protective plate 52. Several elastic telescopic components 62 are circumferentially distributed within the mounting annular groove 31, such as… Figure 4 As shown, the elastic telescopic component 62 includes a hollow fixed screw tube 621. A telescopic rod 623 is connected inside the hollow fixed screw tube 621 through an ejector spring 622. The top of the telescopic rod 623 is inclined. When the semi-circular sliding plate 511 passes the telescopic rod 623, the telescopic rod 623 is gradually squeezed into the hollow fixed screw tube 621 under the action of the inclined head structure. After passing the telescopic rod 623, the telescopic rod 623 pops out under the action of the ejector spring 622, which supports the semi-circular sliding plate 511.

[0027] When not under maintenance, the fall protection warning mechanism 5 is retracted inside the top-mounted well shaft 3, and multiple arc-shaped protective plates 52 serve as fall protection. During maintenance, after opening the well cover 4, the semi-circular sliding plate 511 is raised to the well opening position, and the arc-shaped protective plates 52 unfold, serving as a protective warning.

[0028] like Figure 5 As shown, the arc-shaped protective plate 52 is provided with an extension mechanism 7. The extension mechanism 7 includes a trapezoidal mounting slider 71, which is disposed in the arc-shaped groove 521 on the side of the arc-shaped protective plate 52. A rotating screw 72 is provided on the trapezoidal mounting slider 71, and an arc-shaped extension plate 73 is provided on the rotating screw 72. A reflective strip 74 is provided on the arc-shaped extension plate 73. The trapezoidal mounting slider 71 is equipped with two elastic positioning components 75. Each elastic positioning component 75 includes a clamping spring 751. One end of the clamping spring 751 is connected to a mounting plate 752. An operating groove 753 is provided on one side of the mounting plate 752. The mounting plate 752 is threaded into the mounting through hole 711 of the trapezoidal mounting slider 711. A limit ring 754 is fixed to the end of the mounting through hole 711 opposite to the arc-shaped protective plate 52. A ball bearing 755 is provided between the limit ring 754 and the other end of the clamping spring 751. Under the action of the clamping spring 751, the trapezoidal mounting slider 71 can be fixed at any position in the arc-shaped groove 521, such as... Figure 6 As shown, the arc-shaped extension plate 73 is located in the middle of the arc-shaped groove 521, as... Figure 7 As shown, the arc-shaped extension plate 73 is located at the tail of the arc-shaped slide 521. The angle of the arc-shaped extension plate 73 can be adjusted by rotating the screw 72. Adjustments can be made according to the actual environment.

[0029] Example 2 The difference between this embodiment and Embodiment 1 is that: three rotating shafts 512 are provided, and there is no need to provide transmission gears 54, such as... Figure 8 As shown, the three rotating shafts 512 are arranged in a trapezoidal shape, with their heights increasing sequentially. The number of rotating shafts 512 can be adjusted according to actual conditions to make them fit more closely to the interior of the top-mounted well casing 3; other components can be added accordingly.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solutions of the present invention, and these modifications or equivalent substitutions cannot cause the modified technical solutions to deviate from the spirit and scope of the technical solutions of the present invention.

Claims

1. A prefabricated manhole for roads, comprising a connecting prefabricated manhole cylinder, a heightening unit, and a top-mounted manhole cylinder connected in sequence, wherein the heightening unit comprises a plurality of connecting prefabricated manhole cylinders connected in sequence, and a manhole cover is provided on the top-mounted manhole cylinder, characterized in that: The top mounting shaft is equipped with a fall prevention warning mechanism, which includes two symmetrically arranged mounting shafts. The mounting shafts are slidably mounted in the mounting ring groove on the inner wall of the top mounting shaft. An unfolding positioning mechanism is installed in the mounting ring groove. The mounting shafts are arranged opposite to the unfolding positioning mechanism. Several arc-shaped protective plates are installed on the mounting shafts.

2. The prefabricated inspection well for roads according to claim 1, characterized in that: The mounting bracket includes a semi-circular sliding plate, on which at least two rotating shafts are mounted via bearing seats, and several arc-shaped protective plates are fixed side by side on the rotating shafts.

3. A prefabricated inspection well for roads according to claim 2, characterized in that: The circular angle corresponding to the arc-shaped protective plate is 90°-180°, and the arc-shaped protective plates on the two mounting brackets are connected in an incorrect manner.

4. A prefabricated inspection well for roads according to claim 3, characterized in that: The deployment positioning mechanism includes several drive racks and several elastic telescopic components. The drive racks are circumferentially distributed in the mounting ring groove, and the drive racks are arranged opposite to the meshing gears of the rotating shaft. Several elastic telescopic components are circumferentially distributed in the mounting ring groove. Each elastic telescopic component includes a hollow fixing screw tube, and a telescopic rod is connected inside the hollow fixing screw tube through an ejector spring. The top of the telescopic rod is inclined.

5. A prefabricated inspection well for roads according to claim 4, characterized in that: There are two rotating shafts arranged in a V-shape, with one rotating shaft higher than the other. A transmission gear is provided on the semi-circular sliding plate, and the transmission gear is located between the meshing gear of the drive rack and the rotating shaft.

6. A prefabricated inspection well for roads according to claim 4, characterized in that: There are three rotating axes arranged in a trapezoidal shape, with the height of the three rotating axes increasing sequentially.

7. A prefabricated inspection well for roads according to claim 5 or 6, characterized in that: An extension mechanism is provided on the arc-shaped protective plate. The extension mechanism includes a trapezoidal mounting slider, which is set in an arc-shaped groove on the side of the arc-shaped protective plate. A rotating screw is provided on the trapezoidal mounting slider, and an arc-shaped extension plate is provided on the rotating screw. A reflective strip is provided on the arc-shaped extension plate.

8. A prefabricated inspection well for roads according to claim 7, characterized in that: The trapezoidal mounting slider is provided with at least one elastic positioning component, which includes a clamping spring. One end of the clamping spring is connected to a mounting plate. One side of the mounting plate is provided with an operating groove. The mounting plate is threaded into the mounting through hole of the trapezoidal mounting slider. A limit ring is fixed at the end of the mounting through hole opposite to the arc-shaped protective plate. A ball is provided between the limit ring and the other end of the clamping spring.

9. A prefabricated inspection well for roads according to claim 1, characterized in that: The bottom of the connecting assembly shaft is a sealed structure, while both ends of the connecting assembly shaft are open structures. U-shaped foot pedals are provided on the inner walls of both the connecting assembly shaft and the connecting assembly shaft.

10. A prefabricated inspection well for roads according to claim 1, characterized in that: Both the open end of the connecting assembly well tube and the end connected to the assembly well tube are provided with a docking groove. The docking groove is provided with a limit groove, which includes a vertical sliding groove and a horizontal arc groove that are connected. The other end of the connecting assembly well tube and the bottom of the top mounting well tube are provided with limit columns.

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