CN216429605U - Tunnel shaft excavation pilot shaft safety device - Google Patents
Tunnel shaft excavation pilot shaft safety device Download PDFInfo
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- CN216429605U CN216429605U CN202122599814.XU CN202122599814U CN216429605U CN 216429605 U CN216429605 U CN 216429605U CN 202122599814 U CN202122599814 U CN 202122599814U CN 216429605 U CN216429605 U CN 216429605U
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- apron
- shaft
- reinforcing bar
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Abstract
The utility model relates to a tunnel shaft excavation pilot shaft safety device belongs to tunnel construction engineering technical field. Tunnel shaft excavation shaft guide safety device include reinforcing bar waist hoop, apron and handle, reinforcing bar waist hoop for the cylindricality cage cover skeleton that forms by a plurality of vertical reinforcing bars and annular steel bar welding, the top welding of reinforcing bar waist hoop has the apron, the welding of apron middle part has the handle. The utility model discloses conveniently promote the apron at apron top surface welding handle, apron bottom surface welding reinforcing bar waist hoop does benefit to the apron and places the direction, compares five minute boards or bamboo springboard cover shaft and leads well head not only environmental protection but also safety, repeatedly usable after the preparation moreover, simple to operate.
Description
Technical Field
The utility model belongs to the technical field of tunnel construction engineering, specific theory relates to a tunnel shaft excavation pilot shaft safety device.
Background
At present, in the excavation construction process of a vertical shaft of a diversion tunnel, a vertical shaft guide shaft is usually constructed firstly, then expanding excavation is carried out, the guide shaft is impacted into a circular hole by adopting an impact drill, the guide shaft is most convenient and efficient, and the safety protection of the guide shaft is particularly important when the vertical shaft is expanded excavation. It is common practice to cover the shaft pilot well head with a five-split plate or a bamboo springboard. The covering of the five-divided board or the bamboo gangplank is inconvenient and environmentally-friendly, and has potential safety hazards.
Disclosure of Invention
In order to overcome the problem that exists among the background art, the utility model provides a tunnel shaft excavation pilot shaft safety device, repeatedly usable, the installation effectiveness is high, safety ring protects.
In order to achieve the above purpose, the utility model is realized by the following technical scheme:
the utility model provides a tunnel shaft excavation shaft guiding safety device, includes reinforcing bar waist hoop, apron and handle, reinforcing bar waist hoop for the cylindricality cage that is formed by a plurality of vertical reinforcing bars and annular steel bar welding covers the skeleton, the top welding of reinforcing bar waist hoop has the apron, the welding of apron middle part has the handle.
Furthermore, the cover plate is processed into a round shape by a thick steel plate, and the diameter of the cover plate is larger than that of a guide well of the vertical well of the tunnel.
The utility model has the advantages that:
the utility model discloses conveniently promote the apron at apron top surface welding handle, apron bottom surface welding reinforcing bar waist hoop does benefit to the apron and places the direction, compares five minute boards or bamboo springboard cover shaft and leads well head not only environmental protection but also safety, repeatedly usable after the preparation moreover, simple to operate.
Drawings
FIG. 1 is a schematic view of the installation of the present invention;
FIG. 2 is a schematic view of the cover plate structure of the present invention;
fig. 3 is a bottom view of the present invention.
In the figure, 1-cover plate, 2-handle, 3-vertical steel bar, 4-annular steel bar, 5-lifting equipment hook, 6-tunnel vertical shaft and 7-tunnel vertical shaft guide shaft.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the following will describe in detail the preferred embodiments of the present invention to facilitate understanding of the technical staff.
As shown in fig. 1-3, a tunnel shaft excavation shaft guiding safety device, including reinforcing bar waist hoop, apron 1 and handle 2, reinforcing bar waist hoop for the cylindricality cage cover skeleton that forms by the welding of a plurality of vertical reinforcing bar 3 and annular reinforcing bar 4, length 100 ~ 120cm, diameter 100cm, reinforcing bar waist hoop is formed by 8 long 100 ~ 120cm twisted steel and 4 welding of 4 annular reinforcing bars, vertical reinforcing bar 3 evenly arranges in the hoop, annular reinforcing bar 4 evenly arranges in vertical direction, annular reinforcing bar 4 welds in the 3 outsides of vertical reinforcing bar. The top welding of reinforcing bar waist hoop has apron 1, and the welding of 1 middle part of apron has handle 2, and handle 2 is processed into a few style of calligraphy with the round steel, and 2 full welds of handle are at 1 top surfaces of apron, and 2 round steel diameters of handle are 25mm, and 2 high 30 ~ 40cm of handle, handle 2 and the every section of apron 1 welding section are long 30 cm. The utility model discloses at 1 top surface welding handle 2 of apron conveniently promote apron 1, 1 bottom surface welding reinforcing bar waist hoop of apron does benefit to apron 1 and places the direction, compares five minute boards or bamboo springboard cover shaft and leads well head not only environmental protection but also safety, repeatedly usable after the preparation moreover, simple to operate.
The cover plate 1 is processed into a round shape by a thick steel plate, the diameter of the cover plate is larger than that of a guide well 7 of a vertical shaft of a tunnel, and the preferred diameter of the cover plate is 140-160 cm.
The utility model discloses a use:
during the use, handle 2 hangs on lifting means lifting hook 5, hangs into tunnel shaft 6 to place at tunnel shaft leading shaft 7 suitable for reading, the reinforcing bar waist hoop get into in the tunnel shaft leading shaft 7 can, apron 1 covers 6 well heads of tunnel shaft can.
Finally, it is noted that the above-mentioned preferred embodiments illustrate rather than limit the invention, and that, although the invention has been described in detail with reference to the above-mentioned preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the scope of the invention as defined by the appended claims.
Claims (2)
1. The utility model provides a tunnel shaft excavation pilot shaft safety device which characterized in that: tunnel shaft excavation shaft guide safety device include reinforcing bar waist hoop, apron and handle, reinforcing bar waist hoop for the cylindricality cage cover skeleton that forms by a plurality of vertical reinforcing bars and annular steel bar welding, the top welding of reinforcing bar waist hoop has the apron, the welding of apron middle part has the handle.
2. The tunnel shaft excavation shaft guiding safety device of claim 1, characterized in that: the cover plate is processed into a round shape by a thick steel plate, and the diameter of the cover plate is larger than that of a guide well of a vertical well of the tunnel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122599814.XU CN216429605U (en) | 2021-10-28 | 2021-10-28 | Tunnel shaft excavation pilot shaft safety device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122599814.XU CN216429605U (en) | 2021-10-28 | 2021-10-28 | Tunnel shaft excavation pilot shaft safety device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216429605U true CN216429605U (en) | 2022-05-03 |
Family
ID=81333210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122599814.XU Active CN216429605U (en) | 2021-10-28 | 2021-10-28 | Tunnel shaft excavation pilot shaft safety device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216429605U (en) |
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2021
- 2021-10-28 CN CN202122599814.XU patent/CN216429605U/en active Active
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