Apparatus for everting a lining material
a technology of everting and lining material, which is applied in the direction of mechanical equipment, pipe elements, pipe/joints/fittings, etc., can solve the problems of considerable everting force, inability to smoothly carry out the drawing out process, and inability to everte and insert smoothly and reliably
Inactive Publication Date: 2010-06-17
KAMIYAMA TAKAO +3
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AI Technical Summary
Benefits of technology
This approach enables the pipe-lining material to be smoothly and reliably inserted into pipelines without stopping partway, reducing everting force requirements and minimizing friction, even for materials with larger diameters or heavier thicknesses.
Problems solved by technology
Therefore, the resistance of being drawn out of the container during eversion is considerable, and there is a problem in that a considerable everting force is required.
Also, since the pipe-lining material is folded and stored, there is problem in that the upper portion of the folded pipe-lining material shifts up and down in accordance with the amount drawn out during the operation, and the drawing out process cannot be smoothly carried out.
This causes considerable friction to be generated, resulting in eversion resistance.
In particular, the lining material may stop everting partway in the process when the lining material has considerable thickness and a large amount of everting pressure is required, or when the lining material is heavy because of a large diameter.
Method used
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[0022]The present invention will be described below in detail with reference to the embodiments shown in the drawings.
[0023]FIG. 1 shows the external appearance of an apparatus for everting a pipe-lining material for rehabilitating pipes such as sewage pipes, gas pipes, communication cable pipes, power cable pipes, and other deteriorated underground pipes. The component indicated by the reference numeral 20 is a storage container having an airtight structure in which the pipe-lining material is stored, and is ordinarily mounted on a load-carrying platform of a truck by way of two support plates 12 (one of which is not visible) so as to be moved to a work site. Vertical adjustment mechanisms 13 and 14 (the remaining two are not visible and are not shown) are disposed at the four corners of the storage container 20, and the storage container 20 can thereby be kept horizontal.
[0024]As shown in FIG. 2, a guide unit 22 having a plurality of guide rollers 21, and an induction nozzle 30 in...
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An apparatus for everting and inserting a pipe-lining material to rehabilitate an underground pipeline comprises an everting nozzle that is disposed so that an opening thereof faces an opening of the pipeline. The pipe-lining material is brought un-everted up to the everting nozzle and attached to the nozzle opening thereof and fluid pressure is applied inside the pipe-lining material to evert and insert it in the pipe-extending direction of the pipeline to be rehabilitated. Eversion of the pipe-lining material is started at the location of the pipeline opening and the pipe-lining material remains flat without being everted in a curved portion where the travel direction of the pipe-lining material changes toward the pipeline opening. This allows no considerable friction to be generated at the curved portion and the pipe-lining material to be smoothly and reliably everted and inserted into the affected pipeline.
Description
BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates to an apparatus for everting a lining material, and particularly relates to an apparatus for everting and inserting a tubular pipe-lining material into a deteriorated underground pipeline to line and rehabilitate the interior surface thereof.[0003]2. Description of the Prior Art[0004]There are pipe lining methods for lining the interior of sewage pipes, gas pipes, communication cable pipes, power cable pipes, and other deteriorated underground pipes and repairing the pipes without unearthing the pipes from the ground.[0005]A known example of such above-described pipe lining methods is to use a pipe-lining material composed of a tubular resin-adsorbing material that is covered at its external surface with an airtight plastic film and is impregnated with an uncured liquid curable resin. In this method, the pipe-lining material is everted and inserted into a pipeline by fluid pressure using a ...
Claims
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IPC IPC(8): F16L55/18
CPCF16L55/1651B29C63/36F16L55/18
InventorKAMIYAMA, TAKAOKANETA, KOJIFUJII, KENJIGOTO, RYOICHI
OwnerKAMIYAMA TAKAO