EP0341394B1 - Dispositif pour élargir une cheminée à revêtir intérieurement par fraisage, ainsi que des applications - Google Patents

Dispositif pour élargir une cheminée à revêtir intérieurement par fraisage, ainsi que des applications Download PDF

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Publication number
EP0341394B1
EP0341394B1 EP89104394A EP89104394A EP0341394B1 EP 0341394 B1 EP0341394 B1 EP 0341394B1 EP 89104394 A EP89104394 A EP 89104394A EP 89104394 A EP89104394 A EP 89104394A EP 0341394 B1 EP0341394 B1 EP 0341394B1
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EP
European Patent Office
Prior art keywords
chimney
fluid
fluid motor
motor
milling
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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EP89104394A
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German (de)
English (en)
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EP0341394A2 (fr
EP0341394B2 (fr
EP0341394A3 (en
Inventor
Bernhard Dipl.-Ing. Foullois
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Friedrich Schiedel Kaminwerke GmbH
Original Assignee
Friedrich Schiedel Kaminwerke GmbH
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Application filed by Friedrich Schiedel Kaminwerke GmbH filed Critical Friedrich Schiedel Kaminwerke GmbH
Priority to AT89104394T priority Critical patent/ATE83305T1/de
Publication of EP0341394A2 publication Critical patent/EP0341394A2/fr
Publication of EP0341394A3 publication Critical patent/EP0341394A3/de
Priority to DD33864990A priority patent/DD297866A5/de
Publication of EP0341394B1 publication Critical patent/EP0341394B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
    • B08B9/027—Cleaning the internal surfaces; Removal of blockages
    • B08B9/04—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes
    • B08B9/049—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes having self-contained propelling means for moving the cleaning devices along the pipes, i.e. self-propelled
    • B08B9/051—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes having self-contained propelling means for moving the cleaning devices along the pipes, i.e. self-propelled the cleaning devices having internal motors, e.g. turbines for powering cleaning tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/18—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by milling, e.g. channelling by means of milling tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/18—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by milling, e.g. channelling by means of milling tools
    • B28D1/181—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by milling, e.g. channelling by means of milling tools using cutters loosely mounted on a turning tool support
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J3/00—Removing solid residues from passages or chambers beyond the fire, e.g. from flues by soot blowers
    • F23J3/02—Cleaning furnace tubes; Cleaning flues or chimneys
    • F23J3/026—Cleaning furnace tubes; Cleaning flues or chimneys cleaning the chimneys
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/45—Scale remover or preventor
    • Y10T29/4528—Scale remover or preventor with rotary head

Definitions

  • the invention relates to a device according to the features of the preamble of claim 1.
  • the invention further relates to applications of the device according to claims 23 to 26.
  • FR-A 2 074 527 shows an example of cleaning flue gas pipes of a boiler system.
  • a cleaning brush is inserted into the boiler pipe to be cleaned together with a pneumatic motor driven by compressed air.
  • the device does not act as a milling device, but rather as a radial grinding machine (cf.
  • a chimney cleaning device with a servo motor shows the unpublished DD-A1 262 073. Solid residues are first removed using a milling head. Then the milling head is replaced by a brush head and the inner wall surface of the chimney is further cleaned. In all these known cleaning methods, the inner wall surface of the pipe to be cleaned should be exposed as unharmed as possible.
  • a new flue gas-carrying inner pipe string must be drawn into the chimney in need of refurbishment (so-called lining), in certain cases with an additional radial distance outside this inner pipe string to be pulled in, be it because of the need to pull in a thermal insulation layer together with this, be it for Arrangement of another space, for example for ventilation purposes.
  • the new flue gas-carrying inner pipe string must each have a predefined inner and thus also an order of magnitude predefined outer diameter, so that, as a rule, pulling in the new inner pipe string used for refurbishment into the existing clear width of the chimney in need of renovation is out of the question. It is therefore necessary in all of these cases to remove at least the inner shell of the chimney in need of renovation prior to the installation of renovation pipe elements.
  • the materials of the inner pipes of existing chimneys and also of the rehabilitation layers to be included are very different and almost always very resistant.
  • Older chimneys made of natural or artificial stones, e.g. certain bricks, bricked up or in single-shell moldings made of concrete, in particular made of heat-insulating concrete.
  • the flue gas-carrying inner pipes often consist of chamottes of different grades up to glass, ceramic and stainless steel pipes.
  • the inner pipe lining was also formed from elements in the manner of ceramic tiles.
  • chimneys are not infrequently placed in sections on floor slab openings, so that, for example, actual building material, such as concrete from floors or ceilings of rooms, as well as reinforcing elements embedded therein, including reinforcing irons, reach into the clear cross section of the flue gas pipe, and often even there Form cross-sectional constrictions. Corresponding cross-sectional constrictions are often found even if mortar work was carried out improperly when moving the original chimney.
  • the invention is based on AT-A 203 707, in which, in addition to the use of grinding or beater tools, milling tools have also already been considered.
  • the grinding or milling tool in question can be moved up and down in this known device together with its drive motor in the clear cross section of the chimney.
  • the CS-B1 232 019 also shows a drive motor that can be moved in the clear cross section of a chimney with a connected milling cutter.
  • the invention prefers the use of actual milling tools. Insofar as milling tools are mentioned, they can also be replaced, in particular for special applications or additional work steps, by drilling or grinding tools which are included in the term cutting tools. In any case, the interior wall material of the chimney should be removed and not just an interior wall surface cleaned.
  • This previously known device differs from further-standing devices in which the drive motor is arranged outside the chimney and its torque is transmitted to the inside of the chimney via a possibly flexible shaft (cf. DE-A 1 229 230, WO 86/00391 of WIPO ).
  • the AT-A 203 707 and the CS-B1 232 019 each have an electric motor drive.
  • the stator of the electric motor also serves as a guide for the motor on the inside wall of the chimney.
  • the outlay in terms of equipment and the associated minimum diameter of the device are so great that they do not appear to be suitable for drilling out chimneys with nominal diameters of less than 150 mm. It certainly does not seem possible to have such a device due to the clear cross-section of a chimney of this nominal diameter which is additionally provided with internal deposits in order to then mill from bottom to top.
  • electromotive drives do not appear to be suitable at all for insertion into a chimney.
  • there is the risk of explosion in separated soot if there is a spark the risk of electrical short circuits on conductive areas of the chimney interior wall (e.g. protruding metal reinforcements or areas that have become conductive due to sooting due to liquid), fire risk due to overheating due to insufficient ventilation while avoiding the additional space required by liquid cooling , Risk of accidents for the operators, large working weight, rare availability of high current at the place of work and the like.
  • milling tools driven by electric motors tend to seize in the masonry, even if, as in the case of the aforementioned AT-A 203 707, decoupling devices acting against it are provided. Sensitive, stepless control is also difficult.
  • the whole device completely covers the cross section of the chimney, so that it is not possible to directly observe the milling process from the upper chimney mouth. An insight from below is not an option because of the falling cutter lift.
  • Both AT-A 203 707 and CS-B1 232 019 already have a guide device for interacting with the inner surface of the chimney for the up and / or down movement of the work unit, which has guide and support elements whose radial distances from the motor axis of the Drive motor are variable.
  • the guide and support elements guide the work unit and with it the milling tool along the working axis in the chimney and also support the working torque of the milling tool in the chimney.
  • the guide and support elements are arranged axially offset with respect to the drive motor, so that the overall arrangement is not very compact and the drive axis between the drive motor and milling tool of the work unit is exposed to high lateral moments, which lead to inaccurate axial working direction and damage to the drive axis can.
  • the invention has for its object to provide a device for milling a chimney to be lined, which is safe, convenient and universally applicable while retaining the advantages of the known device, and a compact, visual inspection of the work site construction of the milling tool permitted from above.
  • the fluid motor used in the device according to the invention can be operated, for example, with oil or with compressed air. If compressed air or another pneumatic gas is used, for example an inert gas such as nitrogen, there is no danger to the chimney from the outset. Pressure oils are expediently chosen in a non-inflammable manner. If such pressure oil escapes in a sooty chimney, it could even lead to the liquid binding of the soot and thus to a reduction in the original soot fire risk. In addition, fluid lines are less likely to get caught on projections and joints on the inner surface of a chimney to be milled out than electric lines.
  • Small diameters and small axial designs can be combined conveniently into an overall compact design, especially with fluid motors. This has a whole range of advantages, such as light weight and thus easy accessibility even at very large working depths, even with chimneys with a round inner cross section, sufficient visual insight into the working location of the milling tool from above, and easy maneuverability along uneven work paths.
  • Fluid motors also do not require cooling to prevent the motor from overheating.
  • the internal structure is technically simple and at the same time robust. There is therefore no risk if the fluid motor also works at greater working depths strikes the inside wall surface of the chimney. Even a design that is safe against damage when falling from a great height can be easily constructed.
  • the operating elements can be shielded against the dust generated during milling with simple means, for example a simple housing, especially since the elements of a fluid motor show from the outset a narrow, elongated design affecting the chimney.
  • An oil pressure pump which provides the operating fluid from outside the chimney, or in the case of a pneumatic pump of a compressor, can be driven at any work location simply by means of an internal combustion engine, for example a modern, low-noise diesel engine, without the need for a high-voltage connection.
  • the device according to the invention is not limited to the applicability in these problem cases, but the same fluid motor can be used for all applications with a respectively adapted milling tool, i.e. even a fluid motor of very small diameter with chimneys of maximum width.
  • the device according to the invention can be used both for milling out flue gas-carrying inner tubes with a round clear cross section and for those with non-round, for example approximately rectangular or square, cross sections.
  • the end cross-section is round due to the rotating working of the milling tool, with non-circular cross-sections initially only partially hollowing out the cross-section in the smallest diameter areas.
  • pressurized oil as the operating fluid is known to offer the advantage of being able to work with rod-like and relatively delay-free working with relatively large working pressures.
  • compressed air or other pneumatic gases is preferred for the present application of milling a chimney to be lined. Even if a leak should ever occur in a compressed air line, the leakage flow disappears without residue as long as the pneumatic fluid is not provided with moist components, which can even be preferred according to the description below. However, any moisture it contains evaporates from a chimney.
  • an operation with compressed air or the like can be regulated very simply and continuously from the outside of the chimney by changing the pressure of the compressed air via a control valve, for example directly on the compressor, but also at the location of the worker on the chimney, e.g. on the roof. Because of the compressibility of a pneumatic pressure fluid, the milling tool also runs gently against any resistances, so that even from the operating mode, the milling tool will hardly ever seize in the chimney.
  • the exhaust air (atmospheric air or other pneumatic pressure fluid) can be led out of the chimney via a separate outlet line.
  • the exhaust air is allowed to escape directly into the flue gas duct of the chimney. This creates an air cushion with a slight overpressure in this area. It has been shown that the dust formed during the milling process, which, in contrast to larger-sized milling lift - which has the tendency to fall down under the force of gravity from the outset - has the tendency to rise upwards, has a flow direction for downward flow receives. This has a double advantage.
  • the dust formed can flow downwards in a simple manner without or only with a low suction power; the suction power of a suction device arranged at the lower end of the chimney can also be kept small.
  • the possibility of a geometrical optical cross-section of the view from above past the fluid motor in the direction of the working place of the tool can be made fully usable for the operator, since the space above the milling tool or the air cushion mentioned remains free of dust.
  • a pleasant side effect is that the operators are not soiled by dust.
  • the exhaust air outlet is even directed downward onto the milling tool arranged below the fluid motor, it can be continuously cooled and kept free of undesired deposits. You can even do without an air dryer in the open pneumatic circuit; because it has been found that moisture in the compressed air is even beneficial for binding fine jams bes are.
  • the unit of fluid motor and milling tool is preferably suspended from a pure tension element, as is known per se from AT-A 203 707.
  • the fluid hose itself can serve as the pulling element, which must then be suitably equipped to be load-bearing.
  • a separate pulling element such as a pulling rope operated by a winch, e.g. made of steel, in question.
  • the suspension chain used in AT-A 203 707 can easily be replaced by such a pulling cable because of the lower weight of the fluid motor according to the invention.
  • the weight load of the milling tool by the fluid motor and the other elements of the fluid motor / milling tool unit is sufficient, even if there are materials that are very difficult to mill, such as a chamotte tube to be milled away or a steel tube to be milled away.
  • the decisive factor here is the right choice of milling tool.
  • the guide and support elements for the fluid motor in the chimney are expediently arranged only locally around the fluid motor.
  • the guide elements under consideration in AT-A 203 707 are each designed to be closed in a ring.
  • Claim 7 provides a first possibility for this. It is essential that the runners can be adjusted by changing the inside diameter of the chimney.
  • the runners which can be slightly curved in the shape of a sled runners in their central area and can be bent at their ends - also for maneuverability both upwards and downwards - ensure smooth sliding even if the inside wall of the chimney is uneven, without the risk of getting caught too often.
  • the pressure fluid which is also used as the operating means of the fluid motor, but is expediently supplied via a separate control line and outside the chimney, e.g. at the top of the chimney.
  • the control line and the pressure fluid line are connected to form a line part, for example by binding together using fastening tapes distributed over the length, in particular adhesive strips.
  • Fluid motors in particular pneumatic motors, can in principle achieve very high speeds, even in transition areas from milling to grinding (20,000 rpm and more). Without gear reduction, however, only relatively crumbly materials can be milled off.
  • the design of the fluid motor provided in the device according to the invention is suitable, not only in an area that has already been milled out of the chimney with the milling tool, as is usually the case with milling from top to bottom, but also to be guided together with the milling tool downwards through an area of the chimney that is still to be milled, in order to then carry out the milling upwards .
  • Such a milling process can be carried out in one step from bottom to top (see, for example, WO 86/00391 of WIPO) or in multiple steps with milling in layers, possibly with finishing finishing.
  • the device according to the invention is suitable for all possible working methods upwards and downwards as well as in one stage and in multiple stages.
  • All milling tools in question can be designed so that the same milling tool can be easily converted from an orientation for milling from top to bottom into a milling from bottom to top, or vice versa.
  • a reversible milling tool requires retrofitting after every working stroke. Particularly for a machining expansion in several stages under chip removal both in the downward stroke and in the upward stroke of the milling tool, however, analogous to the double-acting design of the guide elements according to claim 15, a double-acting design of the milling tool is recommended, so that it is designed to cut both upwards and downwards.
  • the most favorable is a double-acting geometry of the milling tool. This can e.g. be easily realized with known chains on the milling tool. If the working edge of the milling tool lies on a knitting cone, this is expediently arranged in tandem in such a way that the large surfaces of the knitting cone face each other.
  • milling tools are preferred in which such an arrangement is not possible.
  • training is recommended in which the effectiveness of the working direction of the milling tool in question can be changed in one direction at the end of the working stroke without having to disassemble and reassemble the milling tool.
  • Such a changeover can again be carried out, for example, by means of the operating fluid, in particular pneumatically, by leading a separate changeover line to the operator's workplace outside the chimney.
  • This reversing line can also be combined with the fluid hose to form a unit.
  • the guide elements according to claims 9 to 11 can be arranged according to claim 16 double-acting. If these guide means are only required in one direction, the resilient guide elements can easily be arranged in the same direction.
  • the milling tools with hammer mechanism according to claims 17 to 20 have already been mentioned above in connection with an increase in the milling effect.
  • they offer the advantage of being able to keep the torque support (the support function of the guide and support elements) to a minimum, since the milling element bounces back like a hammer on an anvil at its place of work and compensates for the counter-torque.
  • the measure according to claim 21 can also be provided to compensate for a counter torque.
  • Claim 22 specifies a measure for quickly changing various milling tools in order not to impair the very high working speed possible within the scope of the invention due to set-up dead times.
  • single-family houses have chimney heights from the basement floor to the upper chimney mouth, as a rule, at most in the range of 8 to 12 m height.
  • Three-storey houses start at a height of 16 to 17 m from the basement level.
  • Eight-storey houses, for example, have a corresponding height of around 48 to 50 m. All such heights from three-storey houses upwards can be easily milled with the device according to the invention in one go with the torque remaining the same, with basically no height restriction due to the very low weight and great flexibility. Should one want to work from the side of a chimney, this is also easily possible because of the simple construction of the device according to the invention.
  • Fig. 1 shows a schematic representation of a "cut" house with a chimney also shown in section.
  • a compressor 10 parked on the floor is connected to a fluid motor 12 which is drained off in the chimney and is designed as a pneumatic motor via a fluid hose 14 which supplies compressed air.
  • the fluid motor carries a milling tool 16, which here is formed by chains, e.g. however, it can also be formed by a suitably designed milling crown.
  • the milling tool 16 When the fluid motor 12 is pressurized with the compressed air, the milling tool 16 is set in rotation and thereby mills the chimney to the desired diameter, also with removal of sooting in the inner shell of the chimney and with the removal of protruding wall parts.
  • the chimney is continuously milled from bottom to top by slowly pulling up the fluid motor 12 together with the milling tool 16.
  • Working from top to bottom is also possible, e.g. with the milling crown mentioned.
  • a suction device is introduced, through which the dust that is formed is suctioned off.
  • a pressure oil pump 10 can replace the compressor 10 and the pneumatic motor and a hydraulic motor as the fluid motor 12.
  • a chimney 4 here as a house chimney, is erected on a chimney foundation 2 and has an outer chimney construction 6 running all around and an inner shell surrounded by it, which is provided as an inner pipe string 8 carrying flue gas.
  • the load-bearing chimney structure 6 is shown here as masonry made of artificial or natural stones and the inner pipe string 8 as a continuous layer, for example made of centrifugal cement.
  • the inner pipe string can also consist of fireclay or steel pipes and can also consist in the usual manner of axially adjoining and mostly sealed by grout or other sealing strands.
  • the chimney 4 ends at the top in a frontal plateau 20 on which one is not Shown chimney head, in modern chimneys, if necessary, via an end plate, not shown, on which the building can be placed.
  • the chimney 4 is expediently milled out with the chimney head removed and, if appropriate, also with the end plate removed.
  • a support frame or support frame 22 is mounted on the plateau 20 in such a way that it cannot be moved laterally, for example by clamping on the upper outer edge of the chimney.
  • the support frame 22 carries a roller 24, via which the fluid hose 14 in the arrangement according to FIG. 1 and a pull rope in the arrangement according to FIGS. 2 to 4 26 is performed.
  • the fluid motor 12 is suspended here on this traction cable 26, for which purpose the fluid hose 14 itself is used according to FIG. 1. If this fluid hose 14 itself is to take on the traction function, it must be designed to be correspondingly tensile, for example by a tensile hose reinforcement or hose casing.
  • the cable winch 28 or a hose unwinding roller are rigidly attached to the support structure with their shaft during operation, so that the winding forces are absorbed via the support structure at the upper end of the chimney 4.
  • the cable winch 28 is expediently adjustable in height.
  • the fluid hose 14 is here guided separately from the pull cable 26 from the upper end of the chimney 4 and connected to a compressor (cf. compressor 10 in FIG. 1) outside the chimney, which is driven by an internal combustion engine, expediently a diesel engine. Both the compressor and the internal combustion engine are mounted on a chassis 30 with a parking brake 32 and surrounded by a sound absorbing hood 34.
  • the chassis 30 can be placed on any flat base 36 next to the building in which the chimney 4 is built and braked against this base.
  • a pre-separator 42 for coarse milling removal and a main separator 44 for milling dust communicating therewith in the suction direction, which is also driven by a motor, are also arranged on chassis 38 and 40.
  • a pre-separator 42 for coarse milling removal and a main separator 44 for milling dust communicating therewith in the suction direction which is also driven by a motor
  • chassis 38 and 40 are also arranged on chassis 38 and 40.
  • about two electric motors 46 or, alternatively, compressed air motors can be provided, which can then expediently be supplied by the compressor arranged under the hood 34.
  • the two electric motors 46 enable a corresponding multiplication of the available drive power when supplied by the local mains voltage and can thus save a high-voltage connection. If necessary, more than two such motors 46 can also be provided.
  • the main separator is designed, for example, as an industrial vacuum cleaner and is connected via the suction lines shown through the opening of the chimney slide 18 to the floor space of the chimney 4 above the chimney foundation 2.
  • the milling tool 16 shown in FIG. 2 is described in more detail below with reference to FIG. 14.
  • the milling tool 16 used in FIGS. 3 and 4 is described in more detail below with reference to FIG. 15.
  • the fluid motor 12 also carries a guide 48, as is described in more detail with reference to FIGS. 9 and 10a to 10d.
  • the fluid motor 12 itself has the type described below with reference to FIG. 5, possibly with FIG. 6, which requires guidance.
  • the guide 48 is omitted with the basic structure according to FIGS. 2 to 4 remaining the same.
  • the inner pipe string 8 carrying the flue gas is milled in one go from bottom to top, in the arrangement according to FIG. 4 also in one go from top to bottom include an inner zone detected during the milling process, radially successive zones can be removed one after the other from the inside to the outside in alternate milling operations downwards, upwards, downwards etc.
  • Post-processing steps, such as finishing operations, can also be carried out by changing the milling tool 16 by means of the same fluid motor 12.
  • the milling tool 16 can optionally also be arranged at the top and the fluid motor 12 at the bottom in a manner not shown; however, this presents the difficulty of feeding the fluid motor to have to pass through the body of the milling tool at the top or alternatively to feed the fluid hose 14 from the beginning through the opening of the chimney slide 18, or another opening.
  • the pneumatic motor 12 shown in FIG. 5 has a cylinder 50, along the axis of which the rotor 52 of the pneumatic motor 12 extends.
  • the cylinder 50 is delimited on the outside and inside by a cylinder surface, but the inner cylinder surface is arranged eccentrically to the outer cylinder surface.
  • the cylinder 50 has a correspondingly changing wall thickness.
  • the rotor 52 has a cylindrical outer surface which, with the eccentric inner surface of the cylinder 50, delimits a compression space 54 (shown in cross-hatching).
  • the rotor 52 is in turn attached to a rotor shaft 56.
  • Slits 58 extending tangentially to the rotor shaft 56 are distributed over the circumference of the rotor 52, which is formed from a solid cylinder shell, and extend over the entire axial length of the rotor 52 and end at a radial distance from the rotor shaft 56. In practical embodiments, between four and six such slots are provided, for example. Rotor blades are loosely inserted in the slots. While the fluid motor 12 can otherwise be made of steel, the rotor blades 60 can be made of a suitable plastic, e.g. from phenoplasts or melanin resins, as are sold, for example, under the protected trade name "Pertinax".
  • the rotor lamellae 60 are rectilinear on their longitudinal edge interacting with the cylindrical inner surface of the cylinder 50 and flattened on their longitudinal edge engaging in the slots complementary to a corresponding basic configuration of the slots in order to be axially guided in the slots in their radially deepest engagement position.
  • the rotor lamellae When the rotor shaft rotates under the centrifugal force, the rotor lamellae are pressed outwards into contact with the inner wall surface of the cylinder 50. They divide the compression space 54 into wandering chambers distributed over the circumference of the rotor shaft, short-circuit air between the chambers being avoided as far as possible by sufficiently close contact of the slots on the rotor lamellae.
  • two continuous axially parallel bores 62 run alongside one another in the circumferential direction, via which the compressed air supplied by the compressor 10 via a compressed air hose 14 is fed to the compression space 54 via four slots 64.
  • the slots 64 extend in the circumferential direction of the cylinder 50 and are arranged in pairs in the vicinity of the two ends of the cylinder.
  • Radially through outlet holes 66 are distributed in the sickle of the tapering wall thickness of the cylinder, decreasing in the direction of rotation of the cylinder 52, and several, for example five, of these holes are expediently arranged in several, for example two, rows across the axial area between the slots 64 Distributed circumference of the cylinder 50.
  • the cylinder 50 is sealed off at both ends by a cover 68.
  • Each cover 68 carries on its side facing away from the compression space 54 a ball bearing 71 for the rotor shaft 56, which extends through axial openings in both covers 68 and is secured against axial displacement.
  • the rotor shaft 56 is extended beyond the ball bearing 71 as an input shaft of a single-stage reduction gear, here a planetary gear.
  • the planetary gear corresponds to the lower half of the exposure drawing according to FIG. 6, in the upper half of which further elements for the two-stage design of the reduction gear are shown, here an axially connected two-stage planetary gear.
  • a pinion 70 is seated on the driven end of the rotor shaft outside of the cylinder 50.
  • This pinion engages in an internal toothing of a planet gear cage 72.
  • the planet gears 74 supported in this mesh with a sun gear ring 76.
  • This is rigid on the inside of a pot-shaped extension 78 of an output shaft 80 , on which the shaft of the milling tool 16 is coupled in a rotationally fixed manner.
  • a second planetary gear stage is arranged axially between the output shaft 80 and the described first stage of the planetary gear, the elements of which in FIG. 6 are identified by the addition a while the functional parts are otherwise the same.
  • first stage of the planetary gear is not connected directly to the output shaft 80, but that, with the same design as the end of the output shaft facing the pneumatic motor, an axially aligned intermediate shaft 82 is used, on which a pinion 70a sits, which corresponds to the pinion 70 at the input of the first gear stage in the force application function.
  • the entire unit which is described by the cylinder 50 together with covers 68, the rotor shaft 56 mounted therein, and the planetary gear (85) (designated as a whole) (85), is formed by a two-part solid armored housing 84 on its suspension Surrounded side and all around, a solid lower end plate 86, which carries a first ball bearing 88 for the output shaft 80 inside and is connected tightly to the armor housing 84, on the side facing the milling tool 16, closes the housing.
  • the output shaft 80 is also supported by a second ball bearing 90 which is fastened to the inside of a first part 92 of the tank housing.
  • This first part 92 is arranged in the form of a hood and, starting from the end plate 86, comprises all of the above-mentioned parts of the output housing (s) and pneumatic motor, the hood base 94 being opposite the free end 96 of the rotor shaft 56 opposite the output shaft 80.
  • the cylinder 50 is provided with a slightly protruding ring flange at each of its two ends, and these ring flanges are tightly fitted into the housing of the first part 92 of the armored housing 84. This creates a certain annular gap between the outer surface of the cylinder 50, the two ring flanges and the inner surface of said first part 92, through which the exhaust air from the compression space 54 emerging from the outlet holes 66 can be freely distributed. This exhaust air can escape radially further outward through a ring of outlet holes distributed over the wall of the first part 92 in the circumferential direction.
  • the compressed air is fed to the pneumatic motor through an axially upwardly projecting inlet connection 100, which is integrally formed in the hood base 94. From there, the compressed air reaches the bores 62 via the free space 102 formed below the hood base 94 within the first part 92 and from there finally into the compression space 54 in the manner described.
  • the second part 104 is screwed around the outside on the side of the suspension of the fluid motor. As will be described later with reference to FIG. 9, the entire unit of fluid motor 12 and milling tool 16 is suspended on this second part 104.
  • the second part 104 encompasses the first part 92 of the armor housing 84 to below the exit holes 98 and is screwed into a recess on the first part such that both parts 92 and 104 of the armor housing 84 have a common, small-diameter cylindrical outer surface.
  • annular gap 106 is formed in the overlapping area between the two parts 92 and 104 of the armor housing 84, which lies opposite the exit holes 98 and is sealed in the region of the joint between the two parts of the armor housing.
  • the annular space 106 is extended radially inward in relation to the outer end face of the hood base 94 by an annular gap 108 between the outer end face of the hood base 94 and a massive continuation part 110 of the second part 104 that leads axially upward.
  • a radial bore 112 is first formed, which leads outside of the tank housing with an inlet pipe extending axially next to it for connection to the compressed air hose 14. This connection hole 112 is sealed off from the outer end of the inlet connector 100 on the hood base 94.
  • the annular gap 108 communicates with axially and radially running bores 105 and 107 in the continuation part 110 of the second part 104 of the armor housing 84, in order to finally exhaust the air from the pneumatic motor through an exhaust shaft 114 attached to the side of the armor housing, and thereby during milling to escape into the interior of the chimney.
  • the exit direction of this exhaust shaft is chosen axially parallel to the milling tool 16.
  • the exhaust air escaping only over a portion of the circumference of the armor housing is distributed as a jacket flow in such a way that not only blowing on the milling tool is possible, but also a lock against the rising of milling dust over the entire circumference of the armor housing.
  • the pneumatic motor according to FIG. 7 can basically be constructed in the same way, without prejudice to the graphic deviations in FIG. 7.
  • the torque is transmitted from the pneumatic motor to the milling tool in the absence of a reduction gear in a ratio of 1: 1, i.e. directly.
  • the free end of the rotor shaft 56 protruding from the cylinder 50 on the milling tool 16 side is connected to an output shaft 115, which corresponds to the output shaft 80 according to FIG. 5, via a striking mechanism 117.
  • This converts the continuous rotary movement of the rotor shaft 56 into a rotary-impact movement with impact action in the angular direction due to an interaction of a so-called hammer and an anvil of the impact tool that is effective per revolution of the rotor shaft.
  • An axial oscillation of the milling tool 116 can be dispensed with entirely if an axial component could also be included if necessary.
  • An essential feature of switching on such a striking mechanism is to compensate a counter torque occurring when the milling tool 16 is working - an elastic hammer blow between the hammer and anvil of the striking mechanism per revolution - by the impact of the impact in the striking mechanism.
  • FIG. 7 Another special feature of the pneumatic motor according to FIG. 7 is that the output shaft 115 is hollow, with a polygonal internal cross section, in particular as a hexagon.
  • a polygonal internal cross section in particular as a hexagon.
  • commercially available milling tools which are generally provided with a hexagon connection, can be simply plugged in with the transferability of very high torques.
  • a corresponding plug-in piece 118 of a milling tool 16 is shown in FIG. 7.
  • the bore of the hollow output shaft 115 can also be used as a supply channel for control fluid, in particular compressed air, for the milling tool.
  • a control line connection 120 is led out at the milling end of the hollow shaft, for example in order to change over a milling tool which can be reversed for working directions upwards and downwards when the working direction changes.
  • FIG. 8 and 9 to 11 show two possible preferred construction types of positive guides which can be used in the construction of a pneumatic motor according to FIG. 6 which requires torque support. Both types are characterized by a relatively little covered viewing gap between the tank housing 84 and the inner surface of the chimney 4.
  • connection coupling 124 here a so-called socket, for connecting the output shaft 80 according to FIG. 5 to the milling tool 16.
  • an eyelet 122 is provided at the upper end on the second part 104 of the tank housing, on which the Pull rope 26 can be latched.
  • connection piece 126 which is arranged here laterally on the tank housing and communicates with the connection bore 112, axially on the fluid motor analogously to the eyelet 122 and must be designed to transmit traction, i.e. with connection means to the reinforcement or tensile sheathing of the fluid hose 14.
  • a holding disk 128 is arranged in the region of both ends of the armor housing 84 with sufficient axial spacing for the guide (see in particular also FIGS. 10a and 10b, in which the holding disk 128 in plan view and in Side view is shown).
  • the retaining disk is clamped onto the outer circumference of the armored housing 84 along the action line 130 shown in dashed lines in FIG. 10a by means of tensioning screws 132.
  • the dashed double line 134 in FIG. 10a describes in the large square cross section of the holding disks 128 in the area of the center of the boundary lines of the square a pivot axis 134 for swivel arms 136.
  • These are straight levers, one end of which in the area of the axis 134 on a pivot pin 138 on the armored housing 84 is articulated and the other end is articulated to a cheek 140 on the radially inner side of a runner 142.
  • four runners 142 are distributed over the circumference of the pneumatic motor.
  • These have an elongated, at least approximately rectilinear central section 144 and ends 146 which are inwardly curved or inclined at the top and bottom.
  • the outer surface of the armor housing 84, the runners and the two swivel arms articulating the respective runners above and below form a parallel guide linkage.
  • All four parallel guide rods are adjusted together in their radial width by an axially displaceable actuating plate 147.
  • the circumference of the actuating plate in the region of a linkage 148 is connected to a linkage 152 in the central region of the respective upper swivel arm 136 via a tension lever 150 which extends along the outside of the tank housing.
  • the actuating plate 147 is axially displaceably guided on two diagonally opposite guide rods 154.
  • the guide rods in turn are screwed with their lower ends into the upper holding disk 128 and connected at their upper ends by a transverse yoke 156 to which the eyelet 122 is welded.
  • the actuating plate 147 lies in its lowest position due to the weight of the rods with runners articulated on it.
  • supply plate 147 serves a pneumatically actuated servo cylinder 158 which is attached to the front of the armor housing 84 and can be loosely supported with its punch 160 at the axial center of the actuating plate.
  • a fastening 162 at the point of attack on the actuating plate 147 is preferred.
  • the holding disk 128 is bevelled at the corners of its large square floor plan, and in each of the corners a radially extending incision 163 is provided, which in the area of the line of action 130 for tightening on the circumference of the Armor housing as well as in the embodiment described above is designed as a continuous slot.
  • One end of a rectilinear lever 164 is articulated within the incisions 163 along the triple-dashed imaginary axis 166.
  • the shape of the lever 164 can be seen from the top view according to FIG. 10c or the side view according to FIG. 10d.
  • the axis of action 166 corresponds to the pivot pin 168 according to FIG. 10d.
  • the free lever end is formed with a one-sided projection as fork 169, a shaft 172 being arranged on the two arms 170 of fork 169, on each of which a cutting wheel 174, or alternatively a roller or roller, is rotatably mounted.
  • An elastic-flexible buffer element in the form of a circumferential cellular rubber ring 176 is secured against the axial displacement in each case under the respective holding disk 128, on which the central region of the respective lever lies loosely to limit its downward pivoting position. If necessary, the axial position of this buffer element 176 can also be adjusted. With the appropriate setting, you can also choose the same or desired different radial exposure (e.g. in adaptation to the conical shape of the chimney) with different lengths of the levers 164. In this sense, the upper levers 164 are drawn with a shorter length than the lower levers 164. The somewhat further radial projection of the lower levers 164, which can also be seen in FIG.
  • a notch 178 can be seen in FIG. 9 on the outer circumference of the armored cylinder. This notch 178 is opposite a parallel corresponding notch on the covered other side. As a result, the two parts 92 and 104 of the armor housing 84 can be screwed on with a tool by applying a sufficient torque.
  • the guide rods 154 of the embodiment according to FIG. 8 are replaced here by a connecting pin 180 which is fixed at the top by the eyelet 122 and is rigidly connected at the bottom to the end face of the armored housing 84.
  • the connecting pin 180 a solid cylinder, with a smaller diameter than the armor housing 84 can be seen.
  • This has the advantage of being able to arrange the upper levers 164 with a particularly small radial projection. Because of the greater load on the lower levers, the problem does not arise to such an extent. All in all, this has the possibility of adapting to particularly small clear chimney widths.
  • Fig. 11 shows a simple modification with which the same structure of the guide can be formed double-acting, with a constant geometry without the need for conversion work.
  • the levers which are arranged in the form of a ring at the top and bottom, are connected to one another by tension elements 182 which extend along the armored housing 84 and which are expediently tension springs.
  • tension elements 182 which extend along the armored housing 84 and which are expediently tension springs.
  • the milling tool has a central support body 192 around which milling-effective elements held by the support body extend.
  • the upper end of the support body is shown here as a square, with hexagons instead being provided in the case of a design which complies with the standards.
  • These are rigidly attached to the mounting pins 194, which engage in corresponding mounting holes in the support body 192
  • Output shaft of the respective fluid motor 12 attached in axial alignment with its effective axis.
  • fastening couplings with slight lateral deflectability can also be provided, which, however, should absorb the torque that is effective in the angular direction.
  • the support body 192 extends with a constant cross section over the entire axial height of the milling element.
  • the lower end is formed as a support 196 which is fastened axially immovably to the support body 192 via a fastening pin 194.
  • spacer sleeves 198 and spacers 200 are loosely attached to the support body.
  • the spacers 200 are preferably arranged equidistantly, in which case the spacer sleeves 198 arranged between them each have the same axial length or can each be of the same design.
  • the bottom spacer sleeve 198 can be made shorter, as shown. Alternatively, you can do without them entirely and place the lowest spacer directly on the support 196.
  • each spacer disk has a single chain link 202 distributed around the circumference of the milling tool, each chain link carrying a milling disk 204 at its outer end.
  • FIG. 12 a representation is drawn in FIG. 12, in which the rotational state of the milling tool is assumed, so that the outer chain links 202, which are connected in a chain-like manner to both the spacer disks 200 and the milling disks 204, fly horizontally outward, as is also the case in FIG. 1 is shown with respect to longer chain-like milling tools.
  • the idle state such chains hang down under their own weight so that they can then be easily passed through areas of the chimney that have not yet been milled.
  • the milling disks 204 describe an active cone which initially widens conically from top to bottom and then tapers again conically and is axially symmetrical with respect to the middle spacer disk 200a in order to be able to mill equally effectively both upwards and downwards with the same geometry. Since the milling disks of the middle spacer 200a are subjected to the greatest stress due to their largest radial radius and should therefore be chosen to be particularly robust in each case, it is also advisable, as shown, to make the middle spacer 200a stronger than the other spacers (with the same Material with greater thickness). The spacers have different radial widths corresponding to the respective radial radius of the active cone at the point in question, while the individual chain links 202 can all be selected in the same way.
  • the support body 192 is, as mentioned with regard to the milling tool described above, provided with a lower support, not shown, analogous to the support 196, on which here lies a single elongated spacer sleeve 198a (instead of the majority of the spacer sleeves) 198 and spacers 200 of the embodiment described above).
  • a support plate 206 which is connected to the support body 192 in a rotationally fixed manner and is square here.
  • a radially extending slot 208 is formed in each of the four corner regions of this square support plate 206, in each of which a set screw 210 engages from the sides facing away from the spacer sleeve 198a.
  • a set screw 210 engages from the sides facing away from the spacer sleeve 198a.
  • four bow-shaped milling blades 212 can be pivoted out over the circumference of the milling tool, but can also be fixed in a specific angular position when the set screws 210 are tightened.
  • the milling lamella 212 can also be freely moved axially along the elongated holes 208, this position also being excluded when the set screw is tightened.
  • the milling tools each have a cutting edge 214 on at least one outer narrow side. It is also conceivable to provide a cutting edge 214 on both edges of the milling lamella, although only one cutting edge is used in one working direction, be it for working under different operating conditions, be it for the purpose of reverse assembly for subsequent wear of both cutting edges.
  • the cross section of the milling lamella 212 can also be selected such that a cutting edge 214 is only possible on one edge.
  • the cutting edges 214 are also shown axially radially outwards from top to bottom in order to describe a conical knitting cone again. If the working direction is reversed, this workpiece can also be repositioned by exchanging the legs of the bow-shaped milling blades, on which the set screws 210 engage between the support plates 206. Alternatively you can To produce a double effect, also select the issue of the milling blades themselves in the manner of a double cone, as has already been described with regard to the embodiment according to FIG. 12 with regard to various milling elements. Here the double cone would then be formed by the same milling element. Alternatively, one can also connect two milling tool elements according to FIG. 13 axially one after the other in the manner of the embodiment according to FIG.
  • articulations of the bow-shaped milling lamellae can also be provided simply via individual chain links, as is the case in the embodiment according to FIG. 12 with regard to the connection of the spacer disks 200 there with the outer milling disks 204 on the basis of the individual ones Chain links 202 is described.
  • a support disk 216 is fastened to the lower end of the support body 192 in a manner similar to the previously described support 196, e.g. by a fastening screw, not shown, with which the support disk 216 is screwed from below to the support body 192 which partially engages in the support disk 216.
  • Each rectangular groove 218 which are equidistant in the circumferential direction and which run axially are distributed over the circumference of the support disk 216.
  • an oscillating block 220 which forms a straight, short lever and essentially takes up the width of the rectangular groove with relative mobility, is articulated on a bearing pin 222 so as to be oscillatable.
  • the bearing pin 222 is in this case driven in with a form fit by means of through bores 224 opposite each other on the respective rectangular groove 218.
  • the oscillating blocks are essentially flush with the upper end face of the support disk 216.
  • the upper ends of the oscillating blocks 220 are also beveled at least on their radially inner side of the milling head.
  • a roof 226 of the same type inside and outside is shown with a flat ridge formation.
  • the ridge is essentially flush with the surface of the support plate 216 after the pivoting position of the vibrating block 220, while the radially inner roof slope 228 strikes the base of the rectangular groove 218 at a predetermined pivoting position of the vibrating block 220 and thus limits the pivoting out.
  • the double-sided roof design can be used to reverse the installation direction if the vibrating block wears on one side.
  • a threaded bore 230 is recessed.
  • a high stress-absorbing stud 232 is firmly screwed, which with a little radial play serves as a bearing shaft for a cylindrical shell-shaped base body 234 of a milling head 236.
  • the milling head is complemented by burrs 238, which are embedded in the cylindrical peripheral surface of the base body 234 and protrude radially from this peripheral surface, so that the base body and burrs together form a kind of radial hedgehog.
  • the burrs have the same length, so that the circumferential surface of the hedgehog describes a cylindrical, but possibly also a different envelope surface, e.g. an envelope surface slightly bulged in the middle axial length.
  • the pins themselves are straight and made of hard metal, e.g. a steel alloy or from other hard metals or hard metal alloys.
  • the receiving holes of these rows are offset from one another with a gap, the rows being arranged equidistantly.
  • the head of the respective stud 232 is, as shown, embedded in the base body on its outer end face.
  • this tool can be used with the same geometry working both downwards and upwards, with a support body 192 then optionally being provided on both end faces of the support disc 216.
  • a support body 192 then optionally being provided on both end faces of the support disc 216.
  • the oscillating blocks 220 which act as straight oscillating arms, can still hang vertically downwards somewhat freely, if the milling tool is not set in rotation. Then the outer enveloping surfaces of the three milling heads 236 are supported against one another in such a way that all three milling heads are essentially axially aligned, so that insertion into a chimney cross-section which has not yet been milled is conveniently possible.
  • vibrating blocks come to rest with their inner longitudinal surface at the bottom of the rectangular groove 218. You can also design the bottom of the "rectangle" groove bulged, in order to hold the oscillating block axially if necessary.
  • the embodiment shown does not permit a double-acting mode of operation without repositioning a support body 192 provided on both sides when fastening to the output shaft of the fluid motor 12.
  • the stop of the oscillating block 220 on the base of the rectangular groove 218 can be made detachable by means of a servo device such that the oscillating block is pivoted out of the hanging arrangement according to FIG. 5 into an essentially standing arrangement and there also by an outside, likewise servo adjustable support is fixed.
  • a servo control can in turn be carried out by means of the same equipment which is used for the operation of the fluid motor 12, but via a separate control line.
  • Such a striking mechanism can also be arranged at a different location, in particular between the fluid motor and its suspension, it will be described below in a direct connection after the rotor of the fluid motor. In this respect it replaces a separate reduction gear, in which the torque amplification of a reduction gear is exchanged for an increase in effectiveness by hammering. However, one can also combine torque amplification through reduction and hammer action by means of striking mechanism if necessary.
  • a hammer carrier 242 of the striking mechanism is driven with a ratio of 1: 1 by the rotor 52 of the pneumatic motor.
  • Two hammers 246 and two hammer pins 244 are loosely arranged in the hammer carrier 242 at diametrically opposite circumferential locations, the hammer pins 244 as end stops limiting a movement of the hammers 246 radially outward under the centrifugal force.
  • the hammers 246 are carried in the direction of rotation.
  • the arrangement of the hammers 246 in the hammer carrier 242 is designed differently, which manifests itself in different circumferential lengths from the circumferential grooves to be received and different geometries thereof.
  • the hammers 246 execute a wobbling movement.
  • the hammers 246 interact in the rotational direction with an anvil 248, which forms a non-rotatable, preferably rigid, unit with the output shaft 80 carrying the milling tool 16.
  • the anvil 248 is supported in the impact tool housing 250 via the bearing bush 252.
  • the output shaft 80 is thus also given a uniform mounting.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • General Engineering & Computer Science (AREA)
  • Working Measures On Existing Buildindgs (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Milling Processes (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Drilling And Boring (AREA)

Claims (26)

1. Dispositif pour fraiser l'intérieur d'une cheminée (4) à chemiser intérieurement, comportant
a. une unité de travail (12, 16) qui comprend un moteur d'entraînement (12) et un outil de fraisage (16) entraîné par celui-ci, et qui est conçu de manière à ce que du matériau de construction de la paroi de la cheminée (4) puisse être éliminé par fraisage;
b. une source de puissance (10) pouvant être disposée à l'extérieur de la cheminée (4) et destinée au moteur d'entraînement (12);
c. un dispositif de suspension (14, 26) pour l'unité de travail (12, 16), à l'aide duquel l'unité de travail (12, 16) peut être déplacée vers le haut ou vers le bas dans la cheminée (4);
d. une conduite de transmission de puissance (14) permettant la transmission de la puissance d'entraînement de la source de puissance (10) au moteur d'entraînement (12); et
e. un dispositif de guidage coopérant avec la surface intérieure de la cheminée (4), destiné au mouvement de soulèvement ou d'abaissement de l'unité de travail (12, 16) et comportant des éléments de guidage et d'appui (142; 164, 174, 176) dont les distances radiales à l'axe-moteur du moteur d'entraînement (12), sont variables,
caractérisé en ce que
f. le moteur d'entraînement est un moteur à fluide (12);
g. la source de puissance est une source de fluide (10);
h. la conduite de transmission de puissance et un tuyau de fluide (14), et
i. les éléments de guidage et d'appui (142; 164, 174, 176) sont disposés à la périphérie du moteur à fluide (12).
2. Dispositif selon la revendication 1, caractérisé en ce que le moteur à fluide (12) est un moteur pneumatique, le tuyau de fluide (14) une conduite d'air comprimé, et la source de fluide (10) un compresseur.
3. Dispositif selon la revendication 2, caractérisé en ce que l'échappement d'air (114) du moteur pneumatique (12) est agencé sur l'unité de travail (12, 16).
4. Dispositif selon la revendication 3, caractérisé en ce que l'échappement d'air (114) est dirigé vers le bas en direction de l'outil de fraisage (16).
5. Dispositif selon l'une des revendications 1 à 4, caractérisé en ce que l'unité de travail (12, 16) constitué du moteur à fluide (12) et de l'outil de fraisage (16), est suspendu à un élément étant uniquement un élément de traction (14; 26).
6. Dispositif selon la revendication 5, caractérisé en ce que l'unité de travail (12, 16) est suspendue au tuyau de fluide (14).
7. Dispositif selon l'une des revendications 1 à 6, caractérisé en ce que le moteur à fluide (12) comporte en tant qu'éléments de guidage et d'appui, des patins (142) s'étendant le long de l'axe du moteur à fluide (12) et dont la distance à l'axe du moteur à fluide (12) est réglable.
8. Dispositif selon la revendication 7, caractérisé par une commande par fluide, de préférence pneumatique, pour le réglage des patins (142).
9. Dispositif selon l'une des revendications 1 à 6, caractérisé en ce que le moteur à fluide (12) est pourvu d'au moins deux couronnes, se succédant axialement, d'éléments de guidage (164, 174, 176) à rappel élastique et répartis sur la périphérie du moteur à fluide.
10. Dispositif selon la revendication 9, caractérisé en ce que les éléments de guidage et d'appui (164, 174, 176) comportent des leviers (164) articulés sur le moteur à fluide (12) et reposant chacun sur un élément tampon (176) déformable de manière élastique et disposé en-dessous de l'articulation.
11. Dispositif selon la revendication 9 ou 10, caractérisé en ce que les éléments de guidage et d'appui (164, 174, 176) sont munis à leurs extrémités venant en contact avec la paroi intérieure de la cheminée (2), de roues de coupe (174) ou de galets tournants parallèles à l'axe.
12. Dispositif selon l'une des revendications 1 à 11, caractérisé en ce que le rotor du moteur à fluide (12) est relié à l'outil de fraisage (16) par l'intermédiaire d'un réducteur (85, 85a).
13. Dispositif selon la revendication 12, caractérisé en ce que le réducteur (85, 85a) est à plusieurs rapports.
14. Dispositif selon la revendication 12 ou 13, caractérisé en ce que le dit réducteur (85, 85a) est réalisé sous la forme d'un train épicydoï- dal.
15. Dispositif selon l'une des revendications 1 à 14, caractérisé en ce que les éléments de guidage et d'appui (144; 164, 174) du moteur à fluide (12) sont à double effet, c'est à dire sont réalisés de manière à effectuer un guidage aussi bien vers le haut que vers le bas.
16. Dispositif selon l'une des revendications 9 à 11 et 14, caractérisé en ce que les éléments de guidage et d'appui (164, 174) à rappel élastique, des deux couronnes, sont orientés les uns vers les autres et sont reliés entre-eux (182).
17. Dispositif selon l'une des revendications 1 à 16, caractérisé en ce qu'entre le moteur à fluide (12) et l'outil de fraisage (16) est intercalé un mécanisme à percussion (117) agissant en direction angulaire.
18. Dispositif selon la revendication 17, caractérisé en ce que le mécanisme à percussion (117) est réalisé sous la forme d'une pièce axiale de prolongement, amovible, et est disposé, le cas échéant entre le moteur à fluide (12) et un réducteur (85, 85a).
19. Dispositif selon la revendication 17 ou 18, caractérisé en ce que le moteur à fluide (12) est relié selon un rapport 1:1 au mécanisme à percussion (117) et celui-ci est relié à l'outil de fraisage (16) selon un rapport 1:1.
20. Dispositif selon l'une des revendications 17 à 19, caractérisé par un dispositif de commande qui met en route automatiquement le mécanisme de percussion (117), uniquement à une vitesse de rotation limite de l'outil de fraisage, de par exemple 2500 t/min.
21. Dispositif selon l'une des revendications 1 à 20, caractérisé en ce qu'entre le moteur à fluide (12) et sa suspension (14; 26) est agencé un mécanisme à percussion de compensation.
22. Dispositif selon l'une des revendications 1 à 21, caractérisé en ce que l'accouplement entre le moteur à fluide (12) et l'outil de fraisage (16) est réalisé sous la forme d'un raccord rapide.
23. Utilisation du dispositif selon l'une des revendications 1 à 22 pour le fraisage intérieur en un seul passage de longueurs de cheminée de plus de 15 m, par exemple d'immeubles d'au moins trois étages ou de cheminées d'usine complètes.
24. Utilisation du dispositif selon l'une des revendications 1 à 22 dans des cheminées à axe courbe.
25. Utilisation du dispositif selon l'une des revendications 1 à 22 dans des cheminées devant subir un fraisage intérieur, présentant un diamètre nominal de 140 mm ou moins (plus petit diamètre dans le cas de cheminées non circulaires) de leur section transversale intérieure.
26. Utilisation selon la revendication 25, avec comme condition que le diamètre nominal est au plus égal à 100 mm.
EP89104394A 1988-03-12 1989-03-13 Dispositif pour élargir une cheminée à revêtir intérieurement par fraisage, ainsi que des applications Expired - Lifetime EP0341394B2 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AT89104394T ATE83305T1 (de) 1988-03-12 1989-03-13 Vorrichtung zum ausfraesen eines auszufuetternden schornsteins sowie anwendungen.
DD33864990A DD297866A5 (de) 1989-03-13 1990-03-13 Verfahren und vorrichtung zum spanabhebenden erweitern, insbesondere zum ausfraesen, eines auszufuetternden schornsteins sowie anwendungen

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3808376A DE3808376A1 (de) 1988-03-12 1988-03-12 Vorrichtung zum ausfraesen eines auszufuetternden schornsteins
DE3808376 1988-03-12

Publications (4)

Publication Number Publication Date
EP0341394A2 EP0341394A2 (fr) 1989-11-15
EP0341394A3 EP0341394A3 (en) 1990-01-31
EP0341394B1 true EP0341394B1 (fr) 1992-12-09
EP0341394B2 EP0341394B2 (fr) 1995-09-13

Family

ID=6349637

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89104394A Expired - Lifetime EP0341394B2 (fr) 1988-03-12 1989-03-13 Dispositif pour élargir une cheminée à revêtir intérieurement par fraisage, ainsi que des applications

Country Status (7)

Country Link
US (1) US5096262A (fr)
EP (1) EP0341394B2 (fr)
AT (1) ATE83305T1 (fr)
DE (3) DE3808376A1 (fr)
HU (1) HU208574B (fr)
RU (1) RU2071580C1 (fr)
WO (1) WO1989008802A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19534794C1 (de) * 1995-07-30 1997-01-16 Jaeger Und Peters Schornsteint Vorrichtung zum Fräsen von Schornsteinen mit Fräswerkzeug

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT27U1 (de) * 1991-06-06 1994-10-25 Kuny Kaminbau Ing Fritz Baum & Vorrichtung zum aufweiten von schächten
DE4227309A1 (de) * 1992-08-18 1994-02-24 Harm Willem Holman Verfahren zur Vorbereitung der Demolierung bzw. Zerstörung von Gebäuden und dergleichen und Vorrichtung zur Anwendung des Verfahrens
US5555939A (en) * 1995-10-27 1996-09-17 Berger; Martin T. Apparatus for extinguishing chimney fires
US5992778A (en) * 1998-07-31 1999-11-30 Martin Engineering Company Cutting member for a cleaning apparatus used to dislodge adherent bulk material in a storage container
DE19948683C2 (de) * 1998-09-30 2002-11-07 Varioclean Lueftungsanlagenrei Verfahren zur Sanierung von Abluftanlagen im Wohnbereich
NO328188B1 (no) * 2008-03-11 2010-01-04 Qsst As Anordning og femgangsmåte for fjerning av avleiring i en borehullsinstallasjon
US8245779B2 (en) * 2009-08-07 2012-08-21 Geodaq, Inc. Centralizer apparatus
US20130220381A1 (en) * 2010-10-13 2013-08-29 Gerard J. MacNeil Lining material removal system and method
US8794712B2 (en) * 2010-10-13 2014-08-05 Gerard J. MacNeil Refractory material removal system and method
ITVI20130236A1 (it) * 2013-09-26 2015-03-27 Mpr S R L Dispositivo di ingrassaggio
NL2014360B1 (nl) * 2015-02-26 2016-10-13 Van Manen Gerrit Schoorsteenboor met geleiding.
US10562081B2 (en) * 2015-10-08 2020-02-18 Pneumat Systems, Inc. Counter-rotational dual whip-head device for fragmenting solidified bulk materials in containment vessels
WO2017184764A1 (fr) * 2016-04-19 2017-10-26 Ecolab Usa Inc. Dispositif de nettoyage pour système de transport pneumatique
EP3606680A4 (fr) * 2017-04-03 2021-01-13 Micronova Manufacturing, Inc. Configuration de balai-éponge plan à espacement réglable
CN110216591B (zh) * 2019-05-29 2020-04-21 大庆华油石油科技开发有限公司 一种具有收放装置垂直管道喷砂器
US20210102699A1 (en) * 2019-10-04 2021-04-08 ChimSteam, LLC Method and Apparatus for Cleaning Chimneys
CN111298925B (zh) * 2020-03-03 2022-04-08 许婷婷 一种工业用除尘装置
CN111472518B (zh) * 2020-04-14 2021-04-20 湖北工业大学 一种环保型建筑设计用烟道结构
CN111808620B (zh) * 2020-06-30 2021-08-17 安徽创能环保材料有限公司 煤热解废弃物的回收利用装置及其方法

Family Cites Families (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE274605C (fr) *
US1293777A (en) * 1918-11-04 1919-02-11 William J Hogue Oil-well-cleaning appliance.
US1558596A (en) * 1922-10-02 1925-10-27 Gauntlett & Company Inc Centrifugal reamer for oil wells and the like
FR569632A (fr) * 1923-08-09 1924-04-15 Appareil permettant le nettoyage intérieur des tuyaux sans les déplacer
US1592268A (en) * 1923-11-01 1926-07-13 Frank F Hill Well reamer
US1569203A (en) * 1923-11-21 1926-01-12 Marland Refining Company Scraping device
US1899727A (en) * 1930-08-08 1933-02-28 Sandstone Harvey David Combination cutting drill and reaming bit
US2095725A (en) * 1934-07-12 1937-10-12 Standard Oil Co Tube cleaner
US2232018A (en) * 1937-12-04 1941-02-18 Lon D Wright Safety device for an apparatus for cleaning water mains
US2175406A (en) * 1938-08-31 1939-10-10 William D Osborn Chain-head, descaling auger
US2275939A (en) * 1941-03-04 1942-03-10 Baker Oil Tools Inc Casing scraper
US2497659A (en) * 1944-10-21 1950-02-14 Thomas J Davis Tubing cleaning device
US2641791A (en) * 1949-06-21 1953-06-16 Harold W Wells Air-operated apparatus for removing dust accumulations from regenerative checkerwork
US2937008A (en) * 1955-09-30 1960-05-17 Whittle Frank High-speed turbo-drill with reduction gearing
US2889612A (en) * 1957-09-23 1959-06-09 Joosepson Aser Semi-automatic roto scaler
AT203707B (de) * 1957-12-13 1959-06-10 Konrad Maly Vorrichtung zum Regulieren und Erweitern von Kaminen, Rauchfängen od. dgl.
DE1229230B (de) * 1958-03-25 1966-11-24 Hildegard Maly Geb Hartmann Vorrichtung zum Reinigen und Erweitern von Kaminschlaeuchen
DE1175379B (de) * 1963-05-17 1964-08-06 Hans Woehler Schornstein-Reinigungsgeraet
CH490900A (de) * 1967-06-28 1970-05-31 Arx Paul Von Vorrichtung, mit deren Hilfe die Innenwand eines Rohres gereinigt und/oder mit einem Schutzanstrich versehen werden kann
US3480092A (en) * 1967-11-08 1969-11-25 Bell Telephone Labor Inc Rotary impact burrowing device
US3562836A (en) * 1968-12-30 1971-02-16 Raymond M Bremner Reaming tool
DE2064410A1 (de) * 1969-12-31 1971-07-08 Astrom, Nils Osten, Valhngby (Schweden) Vorrichtung zum Beseitigen von Ver stopfungen in Rohrleitungen und zum Reim gen von Rohrleitungen, insbesondere Ab gasleitungen
US3669199A (en) * 1970-03-19 1972-06-13 Youngstown Sheet And Tube Co Drilling apparatus
AT325290B (de) * 1973-09-18 1975-10-10 Baum Fritz Vorrichtung zum regulieren und erweitern der innenfläche eines rauchfanges od.dgl.
US4222445A (en) * 1979-01-08 1980-09-16 Vadetsky Jury V Reduction unit of drilling motor
DE2953685A1 (en) * 1979-05-25 1982-01-28 J Andreasen Unit for the cleaning of shafts(chutes)
DE3009013A1 (de) * 1980-03-08 1981-09-17 Westendorf, Hubert, 5000 Köln Vorrichtung zum reinigen von schaechten
DE3015381A1 (de) * 1980-04-22 1981-10-29 Rilco Maschinenfabrik Gmbh & Co Kg, 7401 Dusslingen Erdbohrvorrichtung
CS232019B1 (cs) * 1982-04-16 1985-01-16 Frantisek Jirik Zařízení pro frézování komínových průduchů
US4678045A (en) * 1983-07-18 1987-07-07 Lyons William C Turbine tool
US4509701A (en) * 1983-08-19 1985-04-09 Northern Vibrator Manufacturing Limited Apparatus for breaking up solidified material in a storage container
US4520524A (en) * 1984-03-26 1985-06-04 Long Jr Charles A Remotely controlled hydraulic cleaner apparatus
DK296584D0 (da) * 1984-06-18 1984-06-18 Leo Blicher Hansen Vaerktoej til rensning af skorstene og lignende
US4603747A (en) * 1985-02-14 1986-08-05 Golden James M Apparatus for removing internal tiles from chimneys
DE8626492U1 (de) * 1986-10-03 1987-05-21 Zellner, Siegfried, 8301 Laberweinting Vorrichtung zum nachträglichen Vergrößern des Kaminquerschnittes
DE8701745U1 (de) * 1987-02-05 1987-03-19 Fa. Ursula Schiedel, St. Veit, Glaan Kaminrohrstrang
DD262073A1 (de) * 1987-07-07 1988-11-16 Bauwesen Ingbuero Veb Schornsteinreinigungsgeraet
DD262467A1 (de) * 1987-07-13 1988-11-30 Max Reinhardt Fa Verfahren zur sanierung lotrechter schaechte, insbesondere von montageschornsteinen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19534794C1 (de) * 1995-07-30 1997-01-16 Jaeger Und Peters Schornsteint Vorrichtung zum Fräsen von Schornsteinen mit Fräswerkzeug

Also Published As

Publication number Publication date
HU208574B (en) 1993-11-29
WO1989008802A3 (fr) 1989-12-28
DE3808376A1 (de) 1989-09-28
DE58902935D1 (de) 1993-01-21
ATE83305T1 (de) 1992-12-15
US5096262A (en) 1992-03-17
HUT55898A (en) 1991-06-28
EP0341394A2 (fr) 1989-11-15
RU2071580C1 (ru) 1997-01-10
DE8903096U1 (de) 1989-10-26
EP0341394B2 (fr) 1995-09-13
EP0341394A3 (en) 1990-01-31
WO1989008802A2 (fr) 1989-09-21
HU891823D0 (en) 1991-04-29

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