Coating apparatus – With indicating – testing – inspecting – or measuring means – With means for visual observation
Patent
1986-11-25
1988-11-08
McIntosh, John
Coating apparatus
With indicating, testing, inspecting, or measuring means
With means for visual observation
118105, 118408, 118DIG10, B05C 708
Patent
active
047827866
DESCRIPTION:
BRIEF SUMMARY
The invention refers to a device to fill in and glue all kinds of depressions in inaccessible pipe conduits. The invention includes a remote-controlled vehicle carrying a mastic spreading device or apparatus for depositing and spreading the material used for filling and glueing. It also includes a television camera for locating depressions. These depressions are craters, breakouts or cracks. Cracks must not only be filled but the material used to fill them needs to connect the walls of the cracks in a manner that renders them capable of again supporting loads; the walls of the crack need to be glued together.
A device that repairs such inaccessible pipe conduits, i.e. those of a diameter of 25-100 centimeters (10 to 40 inches) is already known from European patent specification No. 0 025 204. It comprises, a device that drills holes into the damaged spots of the conduit for subsequently closing them, and a supplementary device which fills the drilled holes already closed from the outside at the inner side with a mastic material. The supplementary vehicle then brushes this area so that the conduit again presents a completely smooth inner surface, at least at the repair spot. This supplementary device could be used independently if the depressions are only minor corrosion spots or breakouts that do not need to be drilled and that can be repaired by simple coating with mastic material.
In the invention disclosed in European patent specification No. 0 025 204 however, the supplementary vehicle for carrying out the closure of the holes, i.e. the mastic spreading device or apparatus, is integral with the drilling device. For construction purposes the mastic carrying conduits were built rigidly into the device. This meant that after each job was completed the device had to be withdrawn from the conduit to be free from the rapidly hardening mastic material and to be cleaned at an accessible location to the conduit, i.e. below a vertical servicing manhole. This resulted in delays in using the device which prevented the repair work to be carried out rapidly.
The object of the present invention resides in introducing as a separate machine an improved supplementary device for filling the drilled, milled or at least damaged spots in the conduit (the drilling of the holes or the milling of the cracks being no longer a part of the same machine in such a manner that, after completing a job the present machine may be more quickly serviced and made ready for further use. The cleaning and other attendant work therefore can be carried out independently from the operation of the device.
The present invention is characterized by a pipe removably carried on the vehicle and containing the filling material.
Preferably the pipe is supported in a cylinder revolvable by a drive about its longitudinal axis and fixed onto it by means of locks whereas the mastic spreading apparatus is disposed on the tube and connected to it by closures.
An embodiment of the device according to the present invention is illustrated in the enclosed drawings wherein
FIG. 1 represents a side view of the device,
FIG. 2 a view from top onto the device, the propelling drive being removed but indicated in dotted lines, and
FIG. 3 a front view of the device with the mastic spreading apparatus.
The device comprises a vehicle with a base plate 1. The latter carries on its one end a large supporting bearing 2, on its center a middle vertical supporting plate 3 and its other end a second or end plate 4. The plates are secured to the base plate in a suitable manner. In addition base plate 1 carries a casing 5, close to supporting plate 3. This casing houses the electronic control for operating the entire device.
The vehicle comprises also axles supported on base plate 1 for the propelling means. These propelling means may be wheels; in the present embodiment, however, they consist of two caterpillar chains 6, one on each side of the device. Each chain runs over two wheels 7, 8, one of them, preferably both, being driven whereby wheels 8 are connected to driving wheel
REFERENCES:
patent: 2910042 (1959-10-01), Gallmeyer et al.
patent: 3895604 (1975-07-01), Ryan
patent: 3960644 (1976-06-01), McFadden
patent: 4308824 (1982-01-01), Muta et al.
patent: 4329937 (1982-05-01), Holland
Kunststoff-Technik AG Himmler
McIntosh John
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