Rail type upper manhole prefabricated cover plate
By combining precast cover plates with concrete tracks, the problems of heavy existing roof cover plates and large footprint and corrosion of steel supports are solved, achieving the effects of not damaging the waterproof structure, saving space and improving safety.
Patent Information
- Application Number
- CN202422928712.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-29
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2034-11-29
AI Technical Summary
The existing manhole covers on the roof are heavy, and their installation requires damage to the waterproof structure. The steel supports occupy a large area and are prone to corrosion, posing safety hazards.
Precast cover plates are combined with concrete tracks, and anti-derailment blocks are installed at both ends of the tracks to avoid the use of steel supports. Cast-in-place concrete tracks are used instead of steel supports.
It does not damage the roof's waterproof structure, saves space, reduces safety hazards, avoids steel frame corrosion, and improves safety and aesthetics.
Smart Images

Figure CN223621153U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of power engineering, and more specifically, to a track-mounted prefabricated manhole cover. Background Technology
[0002] Currently, roofs and structures are equipped with manholes for the inspection and maintenance of roof equipment. However, existing manhole covers are heavy and require manual pushing and pulling to the side supports before further work can proceed. Installing these supports damages the roof's waterproofing structure, and the steel supports must be at the same height as the manholes, protruding significantly from the roof. These supports occupy a large area, and the steel is prone to rusting over time. Furthermore, maintenance personnel are susceptible to tripping over the supports, potentially leading to accidents. Utility Model Content
[0003] The technical problem to be solved by this utility model is to overcome the shortcomings of the existing technology and provide a track-type prefabricated manhole cover.
[0004] This utility model discloses a prefabricated manhole cover plate with track type, which is realized by the following technical solution: a prefabricated cover plate 1, a steel handle 3 fixed on the prefabricated cover plate; concrete tracks 2 are poured on both sides of the manhole 4 on the roof; the two side walls of the prefabricated cover plate are embedded in the concrete tracks, and track anti-derailment blocks 5 are respectively set at both ends of the concrete tracks.
[0005] The size and shape of the prefabricated cover slab are adapted to the manholes on the roof.
[0006] The length of the concrete track shall not be less than twice the length of the precast cover plate.
[0007] Compared with the prior art, the beneficial effects of this utility model are:
[0008] First, this utility model uses cast-in-place concrete tracks, which do not damage the original roof structure and waterproofing, avoiding maintenance work and costs related to roof leaks. Second, it avoids the need for roof steel supports to be at the same height as roof manholes, resulting in excessive protrusions from the roof, thus saving roof space occupied by supports, increasing building space, and providing more room for installing other necessary equipment. Third, replacing the original steel supports with cast-in-place roof tracks effectively prevents the original roof steel supports from rusting over time. Fourth, it solves the problem of high protrusions from roof supports, which could easily cause maintenance personnel to trip and fall, leading to safety accidents. Attached Figure Description
[0009] Figure 1 This is a cross-sectional view of the structure of this utility model;
[0010] Figure 2 This is the left structural view of the present invention;
[0011] Figure 3This is a top view of the structure of this utility model. Detailed Implementation
[0012] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. Many specific details are set forth in the following description to provide a thorough understanding of this utility model; the described embodiments are merely some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this utility model pertains. The terminology used in this specification of the utility model is for the purpose of describing particular embodiments only and is not intended to limit the utility model.
[0013] This utility model is as follows Figure 1-3 As shown, a precast manhole cover plate with track type includes a precast cover plate 1, on which a steel handle 3 is fixed; concrete tracks 2 are poured on both sides of the manhole 4 on the roof; the two side walls of the precast cover plate are embedded in the concrete tracks, and anti-derailment blocks 5 are respectively provided at both ends of the concrete tracks.
[0014] The size and shape of the prefabricated cover slab are adapted to the manholes on the roof.
[0015] The implementation of this utility model is as follows: Prefabricated track-type manhole cover plates 1 are manufactured according to the actual site conditions and design drawings, and steel handles 3 are embedded at both ends within the prefabricated cover plates. After factory processing, the covers are transported to the site and installed manually or mechanically onto the manhole 4 on the roof. A concrete track 2 is cast-in-place at the manhole on the roof. Anti-derailment blocks 5 are installed at both ends of the concrete track, preventing the cover plate from derailing. The track-type prefabricated manhole cover plates not only meet maintenance requirements but also save roof area, enhance roof aesthetics, and reduce personnel safety accidents caused by excessive roof protrusions.
[0016] The above description is only a preferred embodiment of the present utility model. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.
Claims
1. A track-mounted prefabricated manhole cover, characterized in that, It includes a precast cover plate with steel handles fixed on it; concrete tracks are poured on both sides of the manhole on the roof; the two side walls of the precast cover plate are embedded in the concrete tracks, and anti-derailment blocks are set at both ends of the concrete tracks.
2. The prefabricated manhole cover plate of the track type according to claim 1, characterized in that, The size and shape of the prefabricated cover slab are adapted to the manholes on the roof.