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Mounting method for escape manhole in tunnel

An installation method and technology in tunnels, applied in water conservancy projects, artificial islands, underwater structures, etc., can solve the problems of inability to open, high cost, high construction cost, etc., and achieve the effect of flexible use, low force and simple structure

Active Publication Date: 2010-09-01
SHANGHAI TUNNEL ENGINEERING RAILWAY TRANSPORTATION DESIGN INSTITUTE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In urban construction, upper and lower pipelines and pavement manhole covers must have strong bearing pressure. Most of them are made of cast iron, such as hinged manhole covers, anti-theft manhole covers, etc. At present, there are no molded products in China for manual power-assisted manhole covers, and foreign products use Manhole covers and bottom frames made of stainless steel are expensive and there are no large-size products. Among the various types of pipeline and road surface manhole covers, manhole covers that can be opened with assistance are rare. Generally, large-scale manhole covers are driven by electrical appliances or hydraulic pressure, but the system is complicated. High maintenance and debugging requirements, high cost, difficult to popularize and use
Therefore, when evacuating through safety passages and safety exits in emergency situations such as fire, it is easy to find that the manhole cover is not easy to open, or cannot be opened, or is not easy to seal, which will cause damage to personal property.

Method used

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  • Mounting method for escape manhole in tunnel
  • Mounting method for escape manhole in tunnel
  • Mounting method for escape manhole in tunnel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Embodiment 1: The installation method of this embodiment is: first reserve an opening on the tunnel slab structure, and then use expansion bolts or chemical anchor bolts at the opening to fix the manhole cover bottom frame 2 with the tunnel structure.

[0015] The upper cover 1 is connected to the bottom frame 2 through a hinge. Between the upper cover 1 and the bottom frame 2, two booster air pumps 3 are connected at symmetrical positions, and one end of the booster air pump 3 is installed on the reserved hinge under the upper cover 1. The other end is installed on the reserved hinge seat of the bottom frame 2, and a gas spring effect is formed between the bottom frame 2 and the upper cover 1 to achieve the function of reducing the opening force.

[0016] The lock 4 is installed on the upper cover 1, and utilizes rack and pinion transmission to jointly control the two dead bolts to achieve the function of locking with the bottom frame 2. The lock 4 includes a rack and ...

Embodiment 2

[0017] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the bottom frame 2 is pre-embedded in the tunnel slab structure.

[0018] The escape manhole cover installed by the method of the present invention has a lock 4 that can be opened from above and below (the driveway layer and the escape passage). The combination of the manhole cover and the lock makes the manhole cover have anti-jump measures to prevent the upper cover from bouncing or accidentally opening under the wheel pressure. When the situation occurs, there will be no bouncing noise when the wheel is pressed over, and the driving comfort will not be affected. Open the upper cover during use, the booster air pump will automatically open, the escape manhole cover can be easily opened by a single person, the opening force is less than 15kg, and the opening angle of the manhole cover is greater than 90 degrees, which can prevent the manhole cover from sliding down and closing rapidly after op...

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PUM

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Abstract

The invention relates to assembly of well covers, in particular to a method for assembling an escape well cover in a tunnel. The method comprises that: an opening is reserved on a tunnel structure first, and a bottom frame of the escape well cover in the tunnel is then fixedly connected to the opening; an upper cover is connected to the bottom frame; a power-assisted air pump is connected betweenthe upper cover and the bottom frame; and one end of the power-assisted air pump is connected with the upper cover, and the other end of the power-assisted air pump is connected with the bottom frame. The method has the advantages that the escape well cover in the tunnel is controlled on the spot, has a simple structure and strong bearing property due to increase of the stability of the well cover, uses small force, is flexible and convenient to use, has the abilities of self-locking, creepage resistance and seepage resistance, and not only can be used on an escape scuttle in the tunnel but also can be used on an access hole.

Description

technical field [0001] The invention relates to the installation of well covers, in particular to an installation method suitable for escape well covers in tunnels. Background technique [0002] In urban construction, upper and lower pipelines and pavement manhole covers must have strong bearing pressure. Most of them are made of cast iron, such as hinged manhole covers, anti-theft manhole covers, etc. At present, there are no molded products in China for manual power-assisted manhole covers, and foreign products use Manhole covers and bottom frames made of stainless steel are expensive and there are no large-size products. Among the various types of pipeline and road surface manhole covers, manhole covers that can be opened with assistance are rare. Generally, large-scale manhole covers are driven by electrical appliances or hydraulic pressure, but the system is complicated. The maintenance and debugging requirements are high, the cost is high, and it is not easy to promote...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D29/14
Inventor 曹文宏杨志豪胡章喜宋振华沈冲陈华
Owner SHANGHAI TUNNEL ENGINEERING RAILWAY TRANSPORTATION DESIGN INSTITUTE