CA2292725A1 - Device for milling or enlarging the inside diameter or the inside contour of an earthwork - Google Patents
Device for milling or enlarging the inside diameter or the inside contour of an earthwork Download PDFInfo
- Publication number
- CA2292725A1 CA2292725A1 CA002292725A CA2292725A CA2292725A1 CA 2292725 A1 CA2292725 A1 CA 2292725A1 CA 002292725 A CA002292725 A CA 002292725A CA 2292725 A CA2292725 A CA 2292725A CA 2292725 A1 CA2292725 A1 CA 2292725A1
- Authority
- CA
- Canada
- Prior art keywords
- extension arm
- carrier
- axis
- milling
- swiveling
- 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.)
- Abandoned
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F3/00—Sewer pipe-line systems
- E03F3/06—Methods of, or installations for, laying sewer pipes
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/10—Making by using boring or cutting machines
- E21D9/1006—Making by using boring or cutting machines with rotary cutting tools
- E21D9/1013—Making by using boring or cutting machines with rotary cutting tools on a tool-carrier supported by a movable boom
- E21D9/102—Making by using boring or cutting machines with rotary cutting tools on a tool-carrier supported by a movable boom by a longitudinally extending boom being pivotable about a vertical and a transverse axis
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/01—Methods or apparatus for enlarging or restoring the cross-section of tunnels, e.g. by restoring the floor to its original level
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Hydrology & Water Resources (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Earth Drilling (AREA)
- Laser Beam Processing (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
- Sewage (AREA)
- Soil Working Implements (AREA)
- Inorganic Insulating Materials (AREA)
Abstract
The invention relates to a device for milling or enlarging the inside diameter or the inside contour of an earthwork such as a conduit for example, with a milling tool which is held on an extension inn on a carrier which can be positioned in the cross section to be milled, with the carrier having rolls for support and for traversing the cross section to be milled. Optimal working conditions can be achieved in such a way that the extension inn is gimbal-mounted on the carrier about a horizontal swiveling axis and about a further swiveling axis and the point of articulation of the extension arm is height-adjustable.
Description
BACKGROUND OF THE INVENTION
The present invention relates to a device for milling and enlarging the inside diameter or the inside contour of as earthwork such as a conduit for example, with a milling tool which is held on an extension arm on a carrier which can be positioned irx the cross section to be milled, with the carrier haying rolls for support and for traversing the cross section to be milled.
DESCRIPTION OF THE PRIOR ,ART
A milling device for enlarging the inside diameter of a conduit is described in AT 396 270 :for example. In this known device the excavation tool is movably held along a connecting link, with the connecting link being produced accordiztg to the proEle to be milled in order to adapt the milling machine appropriately. The known apparatus is provided with a carrier which is braced in the inside diameter. It has already been proposed principally to hold the milling tool on the frame by a freely guided robot arm whose movements are controllable in conforrraity with the profile, WO 90/ 12979 shows as apparatus for working pipe systems in forrn of a go-devil which is held on several supporting wheels. The go-devil carries a tool on an extension arm. The extension arm is arranged on a pivoted bogie so as to be swivelable in the radial direction, with the bogie being swivelable about a longitudinal axis. In this manner the tool can be brought to any desired position on the pipe wall. Such a device is suitable for inspection and minoz maintenance work, particularly in pipe systems with a small cross sections. It has been seen however that rough work cannot be easily performed with a device of such an arrangeanent. Particularly the enlargement of the cress suction by milling has proved to be problematic, since in this way it is not possible to achieve any favorable angle of attack far the milling tool. 1V,(oreover, the relatively large occurring forces cannot be absorbed optimally by the gear mechanism.
The present invention relates to a device for milling and enlarging the inside diameter or the inside contour of as earthwork such as a conduit for example, with a milling tool which is held on an extension arm on a carrier which can be positioned irx the cross section to be milled, with the carrier haying rolls for support and for traversing the cross section to be milled.
DESCRIPTION OF THE PRIOR ,ART
A milling device for enlarging the inside diameter of a conduit is described in AT 396 270 :for example. In this known device the excavation tool is movably held along a connecting link, with the connecting link being produced accordiztg to the proEle to be milled in order to adapt the milling machine appropriately. The known apparatus is provided with a carrier which is braced in the inside diameter. It has already been proposed principally to hold the milling tool on the frame by a freely guided robot arm whose movements are controllable in conforrraity with the profile, WO 90/ 12979 shows as apparatus for working pipe systems in forrn of a go-devil which is held on several supporting wheels. The go-devil carries a tool on an extension arm. The extension arm is arranged on a pivoted bogie so as to be swivelable in the radial direction, with the bogie being swivelable about a longitudinal axis. In this manner the tool can be brought to any desired position on the pipe wall. Such a device is suitable for inspection and minoz maintenance work, particularly in pipe systems with a small cross sections. It has been seen however that rough work cannot be easily performed with a device of such an arrangeanent. Particularly the enlargement of the cress suction by milling has proved to be problematic, since in this way it is not possible to achieve any favorable angle of attack far the milling tool. 1V,(oreover, the relatively large occurring forces cannot be absorbed optimally by the gear mechanism.
SUMMARY OF THE INVENTION
It is the object of the present invention to avoid such disadvantages and to provide a device of the kind rrxentioned above izt which a known movable basic appliance can be adapted in a particularly easy manner to any desired contours and an automatic control of the advance is enabled, e.g, along a line control device.
This object is achieved in accordance with the inventivr~ that the extension azm is gimbal-mounted on th.e carrier about a horizontal axis and about a further axis and that the point of articulation on the extension arm is height-adjustable.
Aue to the fact that a gimbal-mounted extension arm is provided and the substantially horizontal swivelirxg axis of the extension arm for pivoting the extension arm in the direction of height is arranged in or close to the horizontal diameter of an outer envelope circle about the planned shape of profile, the necessary prerequisites arc fulfilled to align the device in a self traversing manner to a directional or guide beam and work out the desired setpoiat profile. For this purpose the substantially hozizontal swiveling axis is advantageously arranged on a carriage or rocker adjustable in the direction of height. It is adequate for the precise control to align said substantially horizontal swiveliztg axis on the section guide beam in order to enable the adherence to the correct geometrical conditions with respect to the scheduled profrlc in the inside diameter to be carved or enlarged.
The relevant aspect of the present invention is aXso that due to the design it is advaatageously possible to absorb the occurring forces by way of the structure. It is fiuther important that the bearing of the extension artn is provided with more degrees of freedom for the milling tool than would actually be necessary, Even without the height adjustability of the point of articulation the milling tool could still reach every point on the conduit wall within certain limits. However, it is the arrangement in accordance with the invention which ensures a precise control and secures a favorable angle of attack for the tool.
An embodiment in accordance with the invention is provided in a particularly advantageous manner in such a way that the swiveling axis for the horizontal swiveling of the extension arm extends substantially normal to the horizontal swiveling axis, thus ensuring in particular that interior contours or inside diameters which depart fram the circular shape can securely be covered by the extension arm and the milling tools. The required control signals are represented in such a design as the X and Y coordinates of the respective setpoint profile in the cross section to be milled so as to allow automatic traversing along a guide beam in analogy to the method along a line control device.
An embodiment is provided izn a particularly simple manner iz~ such a way that t>ae actuating drives far the vertical and horizontal swiveling of the extension arm are formed by hydraulic cylinders whose position is monitored by a control circuit and is adjusted depending on. a predetermined setpoint profile. The gimbal mounting and the device for the adjustmeztt of the height position of the horizontal swiveling axis can principally be retrofitted on known traversable devices, with an automatic process being enabled in a simple manner due to the geometric design.
A secure adjustment and positioning of the device in the inside diameter can be ensured in a simple mariner in such a way that the carrier carries at least three supporting tolls on the arms which are arranged in a Y-shaped manner izt the cross-sectional plane and are adjustable in the direction torwards the inner surface of the profile. The use of a substantially Y-shaped arrangement of the supporting rolls allows a substantial self centering of the device particularly in cases of cross sections that depart from the circular shape, so that the required effort for subsequent corrections on the section guide beartA can be kept very low. A process control unit earl be used to precisely select different profiles with the hydraulic pistons. The device can be used utuiversally without say major retrofitting work.
An embodiment is provided in accordance with a ftu~tlter preferred development iz~ such a way that the milling tool is arranged on the extension arm at the end of the carrier which is the rear end in the direction of advance or traverse. The removal of the carved material can be omitted with such an arrangement since the same can be simply rinsed away and no longer forms an obstruction during the further advance.
The milling tools can be formed in a particularly simple manner by mihing rollers or milling heads whose axis of rotation is in alignment with the axis of the extension arm. In the case of such an arrangement it is possible, with a respective shape and geometry of the head, to maintain a substantially plane contact of the carving tools with the inner contour and the innez wall of the inside diameter to be enlarged, thus allowing the working speed to be ~increascd.
It is the object of the present invention to avoid such disadvantages and to provide a device of the kind rrxentioned above izt which a known movable basic appliance can be adapted in a particularly easy manner to any desired contours and an automatic control of the advance is enabled, e.g, along a line control device.
This object is achieved in accordance with the inventivr~ that the extension azm is gimbal-mounted on th.e carrier about a horizontal axis and about a further axis and that the point of articulation on the extension arm is height-adjustable.
Aue to the fact that a gimbal-mounted extension arm is provided and the substantially horizontal swivelirxg axis of the extension arm for pivoting the extension arm in the direction of height is arranged in or close to the horizontal diameter of an outer envelope circle about the planned shape of profile, the necessary prerequisites arc fulfilled to align the device in a self traversing manner to a directional or guide beam and work out the desired setpoiat profile. For this purpose the substantially hozizontal swiveling axis is advantageously arranged on a carriage or rocker adjustable in the direction of height. It is adequate for the precise control to align said substantially horizontal swiveliztg axis on the section guide beam in order to enable the adherence to the correct geometrical conditions with respect to the scheduled profrlc in the inside diameter to be carved or enlarged.
The relevant aspect of the present invention is aXso that due to the design it is advaatageously possible to absorb the occurring forces by way of the structure. It is fiuther important that the bearing of the extension artn is provided with more degrees of freedom for the milling tool than would actually be necessary, Even without the height adjustability of the point of articulation the milling tool could still reach every point on the conduit wall within certain limits. However, it is the arrangement in accordance with the invention which ensures a precise control and secures a favorable angle of attack for the tool.
An embodiment in accordance with the invention is provided in a particularly advantageous manner in such a way that the swiveling axis for the horizontal swiveling of the extension arm extends substantially normal to the horizontal swiveling axis, thus ensuring in particular that interior contours or inside diameters which depart fram the circular shape can securely be covered by the extension arm and the milling tools. The required control signals are represented in such a design as the X and Y coordinates of the respective setpoint profile in the cross section to be milled so as to allow automatic traversing along a guide beam in analogy to the method along a line control device.
An embodiment is provided izn a particularly simple manner iz~ such a way that t>ae actuating drives far the vertical and horizontal swiveling of the extension arm are formed by hydraulic cylinders whose position is monitored by a control circuit and is adjusted depending on. a predetermined setpoint profile. The gimbal mounting and the device for the adjustmeztt of the height position of the horizontal swiveling axis can principally be retrofitted on known traversable devices, with an automatic process being enabled in a simple manner due to the geometric design.
A secure adjustment and positioning of the device in the inside diameter can be ensured in a simple mariner in such a way that the carrier carries at least three supporting tolls on the arms which are arranged in a Y-shaped manner izt the cross-sectional plane and are adjustable in the direction torwards the inner surface of the profile. The use of a substantially Y-shaped arrangement of the supporting rolls allows a substantial self centering of the device particularly in cases of cross sections that depart from the circular shape, so that the required effort for subsequent corrections on the section guide beartA can be kept very low. A process control unit earl be used to precisely select different profiles with the hydraulic pistons. The device can be used utuiversally without say major retrofitting work.
An embodiment is provided in accordance with a ftu~tlter preferred development iz~ such a way that the milling tool is arranged on the extension arm at the end of the carrier which is the rear end in the direction of advance or traverse. The removal of the carved material can be omitted with such an arrangement since the same can be simply rinsed away and no longer forms an obstruction during the further advance.
The milling tools can be formed in a particularly simple manner by mihing rollers or milling heads whose axis of rotation is in alignment with the axis of the extension arm. In the case of such an arrangement it is possible, with a respective shape and geometry of the head, to maintain a substantially plane contact of the carving tools with the inner contour and the innez wall of the inside diameter to be enlarged, thus allowing the working speed to be ~increascd.
-5.
As an alternative it is also possible that the axis of rotation of the milling tool is disposed transversally to the axis of the extension arm.
As has already been mentioned, the device is preferably arranged in such a way that the swiveling axes of the extension arm can be aligned with a guide beam, in particular a laser beam, For the purpose of a fully automatic traverse of the device in the interior of the inside diameter depending on the setpoints of a guide beam, the arrangement has been provided in such a way that at least one of the rolls is connected with a traversing mecixanism.
The present invention further relates to a method for milling and enlarging the inside diameter or the inner contour of an earthwork such as a conduit, preferably by using a device of the kind mentioned above. It is provided for in accordance with the invention that a milling tovl is used which is fastened to an extension arm which is gimbal-rzlounted on a point which is arranged at the height of a horizontal diameter of as outer envelope circle about the setpoint shape of profile. A particularly precise enlargement progress can be achieved with such a method.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention is explained below in closer detail by reference to embodiments schematically shown in the drawings, wherein:
Fig. 1 shows a schematic side view of a device in accordance with the invention and Fig. 2 shows a rear view of the device in accordance with the invention as seen in the direction of advance.
DETAILED DESCRIPTION OF THE PREFERRED EIVIBODIMENTS
Fig. 1 shows a dame 1 on which running wheels 2 and 3 axe rotationally held.
Running wheel 3 is connected with a drive motor (not shown), with the running wheels being movable on the base of a conduit profile 4.
In the basic frame 1 of the rrxachine an extension arm 7 is articulated swivelably in the direction of height on a rocker 5 about a substantially hozizontal axis 6. The extension arrn 7 is gimbal-mounted, with the substantially vertical swiveling axis being designated with reference numeral 8. E~ctension arm 7 carries at its face-side end milling or cutting tools 9 which are rotationally held coaxially to the axis of the extension azm, with the respective drive motor being designated with reference numeral 10. The substantially vertical swiveling axis 8 is encompassed by a fork 11 of the extension arm 7, thus ensuring a secure absorption o;f the powers ofreeoil.
The swiveling drive for swiveling the extension arm 7 about the substantially horizontal axis 6 is formed by a hydraulic cylinder 12 which acts on any arm 13 of the cardan joint. The swiveling in the substantially horizontal direction is effected by hydraulic cylinder 14, with said two hydraulic cylinders 14, 12 being connected with a central control device 17 by way of control lines 15 and 16, which control device also processes the signals of a line control device (not shown).
For the purpose of the correct adjustment of height of the substantially horizontal swiveling axis G the rocker 5 is swiveled by a hydraulic cylinder 18 so that the horizontal swiveling axis 6 extends substantially diametrically in the envelope circle of the cross section of conduit 4.
The centering or further support is ensured by supporting rolls 19 wluich can be pressed against the inner wall of conduit 4 by mcaas of hydraulic cylinders 20 and are held in a joint carrier 21. As is shown in fig. 2, carriers 21 w>xich are indicated by the dot-dash lines can preferably be arranged in a Y-shaped manner, with self adjustment being enabled in the case of a substantially egg-shaped cross section jointly with the lower driven supporting roll 3.
Departing from the position as shown in the dot-dash, line, the supporting rolls 19 can also be positioned in any desired manner, as has been indicated with the rolls 19 shown in the drawing with the solid limes.
In the illustration in accordance with fig. 2 the envelope circle outwardly encompassing the profile cross section is designated with reference numeral 22. The substantially horizontal swiveling axis is aligned with the horizontal diameter 23 of said envelope circle, so that a precise adjustment of the entire device to a section guide beam caxa be performed. As is shown in fig. 2, separate hydraulic cylinders 14 can be used for swiveling the extension arm 7 on either side, with the substantially horizontal swiveling axis 6 being adjustable in the direction of height along the vertical longitudinal centter plane o~ the inside diameter to be milled, which place has been indicated with reference numeral 24.
As an alternative it is also possible that the axis of rotation of the milling tool is disposed transversally to the axis of the extension arm.
As has already been mentioned, the device is preferably arranged in such a way that the swiveling axes of the extension arm can be aligned with a guide beam, in particular a laser beam, For the purpose of a fully automatic traverse of the device in the interior of the inside diameter depending on the setpoints of a guide beam, the arrangement has been provided in such a way that at least one of the rolls is connected with a traversing mecixanism.
The present invention further relates to a method for milling and enlarging the inside diameter or the inner contour of an earthwork such as a conduit, preferably by using a device of the kind mentioned above. It is provided for in accordance with the invention that a milling tovl is used which is fastened to an extension arm which is gimbal-rzlounted on a point which is arranged at the height of a horizontal diameter of as outer envelope circle about the setpoint shape of profile. A particularly precise enlargement progress can be achieved with such a method.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention is explained below in closer detail by reference to embodiments schematically shown in the drawings, wherein:
Fig. 1 shows a schematic side view of a device in accordance with the invention and Fig. 2 shows a rear view of the device in accordance with the invention as seen in the direction of advance.
DETAILED DESCRIPTION OF THE PREFERRED EIVIBODIMENTS
Fig. 1 shows a dame 1 on which running wheels 2 and 3 axe rotationally held.
Running wheel 3 is connected with a drive motor (not shown), with the running wheels being movable on the base of a conduit profile 4.
In the basic frame 1 of the rrxachine an extension arm 7 is articulated swivelably in the direction of height on a rocker 5 about a substantially hozizontal axis 6. The extension arrn 7 is gimbal-mounted, with the substantially vertical swiveling axis being designated with reference numeral 8. E~ctension arm 7 carries at its face-side end milling or cutting tools 9 which are rotationally held coaxially to the axis of the extension azm, with the respective drive motor being designated with reference numeral 10. The substantially vertical swiveling axis 8 is encompassed by a fork 11 of the extension arm 7, thus ensuring a secure absorption o;f the powers ofreeoil.
The swiveling drive for swiveling the extension arm 7 about the substantially horizontal axis 6 is formed by a hydraulic cylinder 12 which acts on any arm 13 of the cardan joint. The swiveling in the substantially horizontal direction is effected by hydraulic cylinder 14, with said two hydraulic cylinders 14, 12 being connected with a central control device 17 by way of control lines 15 and 16, which control device also processes the signals of a line control device (not shown).
For the purpose of the correct adjustment of height of the substantially horizontal swiveling axis G the rocker 5 is swiveled by a hydraulic cylinder 18 so that the horizontal swiveling axis 6 extends substantially diametrically in the envelope circle of the cross section of conduit 4.
The centering or further support is ensured by supporting rolls 19 wluich can be pressed against the inner wall of conduit 4 by mcaas of hydraulic cylinders 20 and are held in a joint carrier 21. As is shown in fig. 2, carriers 21 w>xich are indicated by the dot-dash lines can preferably be arranged in a Y-shaped manner, with self adjustment being enabled in the case of a substantially egg-shaped cross section jointly with the lower driven supporting roll 3.
Departing from the position as shown in the dot-dash, line, the supporting rolls 19 can also be positioned in any desired manner, as has been indicated with the rolls 19 shown in the drawing with the solid limes.
In the illustration in accordance with fig. 2 the envelope circle outwardly encompassing the profile cross section is designated with reference numeral 22. The substantially horizontal swiveling axis is aligned with the horizontal diameter 23 of said envelope circle, so that a precise adjustment of the entire device to a section guide beam caxa be performed. As is shown in fig. 2, separate hydraulic cylinders 14 can be used for swiveling the extension arm 7 on either side, with the substantially horizontal swiveling axis 6 being adjustable in the direction of height along the vertical longitudinal centter plane o~ the inside diameter to be milled, which place has been indicated with reference numeral 24.
Claims (11)
1. A device for milling or enlarging the inside diameter or the inside contour of an earthwork such as a conduit, with a milling tool which is held on an extension arm on a carrier which can be positioned in the cross section to be milled, with the carrier having rolls for support and for traversing the cross section to be milled, the extension arm being gimbal-mounted on the carrier about a horizontal swiveling axis and about a further swiveling axis wherein the point of articulation of the extension arm is height-adjustable.
2. A device according to claim 1, wherein the point of articulation of the extension arm is arranged on a rocker which is swivelably arranged relative to the carrier.
3. A device according to claim 1, wherein the horizontal swiveling axis of the extension arm is arranged in the zone of a horizontal diameter of an outer envelope circle about the setpoint shape of profile.
4. A device according to claim 1, wherein the further swiveling axis is arranged substantially normal to the horizontal swiveling axis.
5. A device according to claim 1, wherein hydraulic cylinders far swiveling the extension arm axe provided whose position is monitored by a control circuit and is adjustable depending on a predetermined setpoint profile.
6. A device according to claim 1, wherein the carrier carries at least three supporting rolls on arms which are preferably arranged in a Y-shaped manner in the cross-sectional plane and are adjustable in the direction towards the inner surface of the profile.
7. A device according to claim 1, wherein the milling tool is arranged on the extension arm on the end of the carrier which is the rear end in the direction of advance or traverse, with the milling tool preferably having an axis of rotation which is in alignment with the axis of the extension arm.
8. A device according to claim 1, wherein the swiveling axes of the extension arm can be brought into alignment with a guide beam, in particular a laser beam.
9. A device according to claim 1, with the carrier being held on running wheels, wherein at least one running wheel is provided with a drivable arrangement.
10. A device according to claim 1, wherein at least once supporting roll is provided with a drivable arrangement.
11. A method for milling and enlarging the inside diameter or the inner contour of an earthwork such as a conduit, wherein a milling tool is used which is fastened to an extension arm which is gimbal-mounted on a point which is arranged at the height of a horizontal diameter of an outer envelope circle about the setpoint shape of profile.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ATA2123/98 | 1998-12-21 | ||
| AT0212398A AT408110B (en) | 1998-12-21 | 1998-12-21 | DEVICE FOR EDITING AND ENLARGING THE LIGHT CROSS SECTION OF AN EARTH WORK |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2292725A1 true CA2292725A1 (en) | 2000-06-21 |
Family
ID=3528273
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002292725A Abandoned CA2292725A1 (en) | 1998-12-21 | 1999-12-20 | Device for milling or enlarging the inside diameter or the inside contour of an earthwork |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP1013875B1 (en) |
| JP (1) | JP2000186494A (en) |
| KR (1) | KR100369752B1 (en) |
| AT (2) | AT408110B (en) |
| CA (1) | CA2292725A1 (en) |
| DE (1) | DE59911189D1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101391314B (en) * | 2008-09-25 | 2012-09-05 | 湖州机床厂有限公司 | Spherical surface hole boring and milling mechanism |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4060304A (en) * | 1976-07-01 | 1977-11-29 | Abramson Joseph O | Battery cables and process for making same |
| CN107605030B (en) * | 2017-09-19 | 2020-10-27 | 郑州华隆机械制造有限公司 | Pipeline dredging and obstacle removing vehicle |
| CN114109430B (en) * | 2021-11-30 | 2024-05-03 | 中国矿业大学 | Hard rock cutting dual-purpose entry driving machine |
| CN115229579B (en) * | 2022-09-20 | 2023-03-24 | 江苏强弘阀门有限公司 | Valve pipe fitting equipment of polishing |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1248589B (en) * | 1965-03-11 | 1967-08-31 | Gewerk Eisenhuette Westfalia | Extraction and jacking machine |
| DE2027192A1 (en) * | 1970-06-03 | 1972-02-03 | Paurat, Friedrich Wilhelm, 4222 Friedrichsfeld | Tunneling machine |
| DE2113190B1 (en) * | 1971-03-18 | 1972-05-25 | Paurat F | Method and device for driving routes and tunnels |
| GB1501113A (en) * | 1974-04-20 | 1978-02-15 | Anderson Mavor Ltd | Tunnelling machines |
| FR2459360B1 (en) * | 1979-06-21 | 1986-04-18 | Tim Tech Ind Minieres | SYSTEM FOR EXCAVATING UNDERGROUND GALLERIES |
| DE2933766C2 (en) * | 1979-08-21 | 1982-08-12 | Mannesmann AG, 4000 Düsseldorf | Partial section tunneling machine |
| DE3738802A1 (en) * | 1987-11-14 | 1989-05-24 | Atlas Copco Eickhoff Road | PARTIAL CUTTING MACHINE FOR PROCESSING ROUTES OR TUNNELS |
| DE3740753A1 (en) * | 1987-12-02 | 1989-06-15 | Atlas Copco Eickhoff Road | CARRIAGE ARRANGEMENT ON PARTIAL CUTTING MACHINES |
| DK201389D0 (en) * | 1989-04-26 | 1989-04-26 | Gammelgaard Lone Lykke | APPARATUS FOR USE IN RENOVATION OF PIPE SYSTEMS, NAMELY CLOCK PIPE SYSTEMS |
| AT396270B (en) * | 1989-04-27 | 1993-07-26 | Wiener Betriebs & Bau | MACHINING DEVICE FOR ENLARGING THE LIGHT CROSS SECTION OF THE INTERNAL WALL OF A PROFILE OF AN EARTHWORK CONSTRUCTION, IN PARTICULAR DIFFERENT FROM THE CIRCULAR SHAPE |
-
1998
- 1998-12-21 AT AT0212398A patent/AT408110B/en not_active IP Right Cessation
-
1999
- 1999-12-20 CA CA002292725A patent/CA2292725A1/en not_active Abandoned
- 1999-12-21 DE DE59911189T patent/DE59911189D1/en not_active Expired - Lifetime
- 1999-12-21 JP JP11362053A patent/JP2000186494A/en active Pending
- 1999-12-21 AT AT99890396T patent/ATE283962T1/en active
- 1999-12-21 KR KR10-1999-0059858A patent/KR100369752B1/en not_active IP Right Cessation
- 1999-12-21 EP EP99890396A patent/EP1013875B1/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101391314B (en) * | 2008-09-25 | 2012-09-05 | 湖州机床厂有限公司 | Spherical surface hole boring and milling mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1013875B1 (en) | 2004-12-01 |
| ATE283962T1 (en) | 2004-12-15 |
| EP1013875A3 (en) | 2001-08-16 |
| KR20000048297A (en) | 2000-07-25 |
| JP2000186494A (en) | 2000-07-04 |
| KR100369752B1 (en) | 2003-01-30 |
| EP1013875A2 (en) | 2000-06-28 |
| DE59911189D1 (en) | 2005-01-05 |
| AT408110B (en) | 2001-09-25 |
| ATA212398A (en) | 2001-01-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Discontinued |