Adhesive bonding and miscellaneous chemical manufacture – Surface bonding means and/or assembly means therefor – Work-secured and/or work-guided
Reexamination Certificate
1998-12-22
2001-05-22
Crispino, Richard (Department: 1734)
Adhesive bonding and miscellaneous chemical manufacture
Surface bonding means and/or assembly means therefor
Work-secured and/or work-guided
C156S426000, C138S097000, C405S150100
Reexamination Certificate
active
06234226
ABSTRACT:
TECHNICAL FIELD
The present invention relates to a lining apparatus for providing a lining layer to an inner face of existing tubular culverts such as sewage pipes, water supply pipes and gas pipes of various cross sections including a circular, oval, rectangular or other polygonal shape. More specifically, this invention relates to an apparatus for lining an inner face of a tubular culvert having an arbitrary cross section for carrying out lining operation, in which a tubular body, or so-called lining pipe, formed by spirally winding a strip-like member comprising a sheet-like body, is inserted into a tubular culvert having various cross sections including a circular, oval, rectangular or other polygonal shape.
BACKGROUND ART
The applicant has proposed in Japanese Unexamined Patent Publication No. JP-A-8-200547 (hereinafter, referred to as “Prior Art 1”) a lining apparatus in which a strip-like member is continuously supplied and spirally wound to adhere at joint portions provided on its both sides, thereby to fabricate a tubular body. The lining apparatus advances along the internal diameter of the tubular body to extend the length thereof and thus fabricated tubular body is left at the site where the tubular body is completed. According to Prior Art 1, lining operation is applied to a tubular culvert which has a normal circular cross section. A rigid forming frame in an annular shape is used therein.
Next, the applicant has proposed in Japanese Unexamined Patent Publication No. JP-A-8-261363 (hereinafter, referred to as “Prior Art 2”) an apparatus of lining an inner face of a tubular culvert having an arbitrary cross section, which is not limited to a culvert having a circular cross section but is applicable to culverts having various cross sections in a horse shoe shape (oval shape), a rectangular shape, other polygonal shapes and so on. Prior Art 2 has been realized based on a conception of providing flexibility to a forming frame and providing plastic deformation performance to a strip-like member.
That is, according to the apparatus for lining an inner face of a tubular culvert having an arbitrary cross section, there is provided a lining apparatus in which an elongated strip-like member having plastic deformation performance which can be plastically deformed and in which joint portions are formed on both side edge portions thereof, is used, a tubular body formed by continuously supplying and spirally winding the strip-like member having plastic deformation performance and jointing the joint portions which are brought into contact with each other, is placed to remain in tubular culverts having deformed shape cross sections and the strip-like member having plastic deformation performance newly supplied in front of the tubular body which has already been formed, is added to form a portion of a lining pipe, the apparatus comprising
a forming frame which has a predetermined width and a lateral rigidity and which is made flexible in a longitudinal direction by a link mechanism; guide rollers which are mounted around the forming frame and are brought into contact with the inner face of the tubular body;
a joint mechanism unit which is attached to the forming frame, and arranged at a portion to closedly joint the joint portions of the tubular body that has been already formed and the strip-like member that is newly supplied and which comprises an outer face roller and an inner face roller for pinching the strip-like member; and
a regulating frame which is arranged on the inner side of the forming frame, maintaining a rigidity and having a guide track for deformed sectional shapes for restraining movement of the forming frame.
Further, according to the lining apparatus of Prior Art 2, movement of the forming frame is forced and the strip-like member is plastically deformed by which a lining pipe having a deformed shape cross section in conformity with the shape of the regulating frame is formed.
However, according to Prior Art 2, respective structures of the regulating frame and guide members engaged with the regulating frame are complicated and time and labor is needed in fabrication. Further, the regulating frame is proximate to the center, the inner diameter dimension of the regulating frame is downsized, in flowing water, a water flowing cross section is reduced and water flowing resistance is increased which constitutes a bottleneck in pipe making operation.
Furthermore, deficiency in bending the strip-like member having plastic deformation performance as well as lack in flexibility in mounting the forming frame and the like pose problems.
The present invention has been carried out in order to resolve these problems of the prior arts and it is an object of the present invention to provide an apparatus for lining an inner face of a tubular culvert having an arbitrary cross section in which in a lining apparatus at inside of a tubular culvert in a deformed shape using a regulating frame in respect of a strip-like member having plastic deformation performance, the structure is simplified, and the inner diameter dimension of the regulating frame is enlarged by which the winding operation of the strip-like member is smoothly carried out.
Furthermore, it is other object thereof to devise a measure further ensuring to bend the strip-like member having plastic deformation performance as well as facilitating mounting operation of a forming frame.
DISCLOSURE OF THE INVENTION
An apparatus for lining an inner face of a tubular culvert having an arbitrary cross section according to the present invention adopts the following constitution to achieve the above-described object.
First Invention
The first invention is an apparatus for lining an inner face of a tubular culvert having an arbitrary cross section which adopts the following constitution.
The feature resides in a lining apparatus for forming a lining pipe in the culvert by forming a tubular body by continuously supplying and spirally winding a long strip-like member formed with joint portions at both side edge portions thereof, bringing the joint portions into contact with each other and jointing together the joint portions, said tubular body being left in the tubular culvert and newly supplying the strip-like member at a front side of the tubular body which has already been formed thereby additionally forming portions of the lining pipe, said apparatus comprising:
a forming frame in a closed loop made flexible by a link mechanism comprising a series of links;
rotary guides rotatably installed to shafts axially supported by the forming frame;
a joint mechanism unit attached to the forming frame for jointing together the joint portion of the strip-like member of the tubular body constituting an already-formed portion of the lining pipe and the joint portion of the newly-supplied strip-like member; and
a regulating frame maintaining a rigidity, having a guide track at an outer periphery thereof and arranged on an inner side of the forming frame, said guide track being brought into contact with outer faces of the rotary guides at the forming frame.
According to the invention, a circular shape, an arch shape, a rectangular shape or other deformed sectional shape is adopted in the regulating frame.
Further, in this constitution, adoption of a strip-like member having plastic deformation performance, or elastic deformation performance, or addition of a peripheral length adjusting mechanism for adjusting a peripheral length of the forming frame to the forming frame and so on are selective matters.
The first invention is implemented in a first embodiment.
According to the constitution, by driving the joint mechanism unit, the lining pipe is formed by spirally winding the strip-like member around the forming frame. At this occasion, the movement of the forming frame is regulated by the regulating frame and the forming frame is moved along the shape of the regulating frame and the strip-like member having plastic deformation performance is exerted with a bending force at a corner portion. The lining apparatus for a tubular culvert forms t
Akimoto Eiki
Kitahashi Naoki
Kitayama Yasushi
Yamashiro Hamao
Crispino Richard
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Purvis Sue A.
Sekisui Kagaku Kogyo Kabushiki Kaisha
LandOfFree
Apparatus for lining an inner face of tubular culverts... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for lining an inner face of tubular culverts..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for lining an inner face of tubular culverts... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2454161