EP0994971A1 - Schwenkvorrichtung mit ausleger - Google Patents
Schwenkvorrichtung mit auslegerInfo
- Publication number
- EP0994971A1 EP0994971A1 EP98939615A EP98939615A EP0994971A1 EP 0994971 A1 EP0994971 A1 EP 0994971A1 EP 98939615 A EP98939615 A EP 98939615A EP 98939615 A EP98939615 A EP 98939615A EP 0994971 A1 EP0994971 A1 EP 0994971A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- boom
- support structure
- swivel
- arm
- coupling
- 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.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/12—Opening or sealing the tap holes
Definitions
- the invention relates to a swivel device with a boom for swiveling a working member between a rest position and a working position.
- a swivel device with a boom for swiveling a working member between a rest position and a working position.
- Such a device is used, for example, for swiveling a taphole cannon attached to the boom into a working position in front of the taphole of a blast furnace, and for subsequently pressing the cannon against the taphole.
- a classic swivel device for a taphole cannon comprises, in a known manner, an extension arm at the free end of which the taphole cannon is attached.
- the second end of the boom is pivotally mounted in a fixed support structure.
- the swivel range of the boom should be as large as possible in order to be able to swing the stuffing cannon as far as possible out of the area of the tapping channel. It should also be noted that modern stuffing cannons work with ever higher stuffing pressures. Consequently, the swivel device, which is to press the stuffing cannon against the tap hole, must be designed for ever greater contact forces.
- Hydraulic cylinders are now used in the tap hole tamping machines to pivot the boom.
- rotary motors were used to drive the boom instead of the hydraulic cylinders.
- a tap hole tamping machine with an electric motor is described for example in DE-A-895604. This electric motor transmits its torque to the boom via a toothed and worm gear.
- a magnetic brake enables the boom to be locked in the working position. It is obvious that such a solution can no longer be used economically in modern tamping machines with very high contact pressures.
- Taphole cannon known, which has a hydraulic cylinder and a hydraulic rotary motor. Radial to the swivel axis of the
- Boom extends an arm connected to the boom on which the Piston rod of a double-acting hydraulic cylinder is fastened by means of a first swivel joint.
- the housing of this hydraulic cylinder is fastened to a fixed arm by means of a second swivel joint, which protrudes far from the support structure of the boom.
- the hydraulic rotary motor is attached to the boom. It engages via a pinion with a gear wheel which is fixedly arranged on the support structure of the boom. This rotary motor pivots the boom between a rest and work position.
- the hydraulic cylinder only has the task of transmitting a moment of force to the boom in the working position in order to press the and the stuffing cannon against the tap hole and then tear it off again.
- the hydraulic cylinder is only switched on in a short swivel range near the furnace. Its two pressure chambers are relieved to the tank over the remaining swivel range.
- the stroke of the hydraulic cylinder is designed such that when the boom is pivoted, the length of the hydraulic cylinder inevitably adapts to the variable distance between the first and second rotary joint.
- the pivoting device is a closed three-part transmission, the support structure forming the frame, the support arm forming the driven link, and the hydraulic cylinder, as a variable-length link, closing the transmission between the support structure and the boom.
- the present invention has for its object to make the swivel device from US-A-3,765,663 more compact.
- a swiveling device like the swiveling device from US-A-3,765,663, comprises a boom for carrying the working member; a support structure in which the boom is pivotally mounted at one end about a pivot axis; a rotary drive, for pivoting the boom between its rest position and its working position, and a lifting drive, for generating a contact pressure.
- the support structure forms the frame
- the support arm forms the driven link of a transmission that passes through Lift drive between the support structure and boom is closed.
- the swivel device comprises a coupling device which is connected in series with the linear drive in such a way that the linear drive can be disengaged from the forced running of the transmission.
- the inevitable change in length of the lifting drive when the boom is pivoted can be prevented by the coupling device.
- the total stroke of the linear actuator therefore only needs to be designed for its actual function, ie the generation of a contact pressure in the working position.
- additional freedom of design regarding the arrangement of the linear actuator in the pivoting device is obtained. This enables the machine to be made more compact, simpler and cheaper.
- the energy requirement of the swivel device can be significantly reduced.
- the lifting drive is designed as a short hydraulic cylinder which is carried by the boom. This hydraulic cylinder is then supported by the coupled coupling device on the support structure for transmitting a contact pressure.
- the coupling device comprises a pivot arm which is pivotably mounted in the support structure.
- the linear actuator is mounted between the swivel arm and the boom.
- this swivel arm can be swiveled freely relative to the support structure and to the boom, its swivel axis being essentially coaxial with the swivel axis of the boom.
- a locking device makes it possible to block the swivel arm in the working position relative to the support structure, as a result of which the lifting drive is coupled into the swivel gear for the purpose of transmitting a contact pressure.
- a locking device for the above-described swivel arm has a bolt which is used to lock the Swivel arm relative to the support structure in a corresponding slot and can be executed.
- This locking bolt can be inserted and removed from the elongated hole using a short-stroke cylinder, for example.
- a locking device for the above-described swivel arm has a swivel bolt which can be swiveled in to lock the swivel arm into a position in which, in the working position of the swivel arm, it rests on an abutment.
- This locking device has the advantage that a shock absorber can be installed relatively easily in the abutment, which dampens the engagement of the linear drive in the swivel gear.
- Swivel devices according to the invention are, for example, advantageously suitable for carrying a taphole cannon, the latter being pivotably mounted on the free end of the boom.
- a rigid control rod is connected in an articulated manner to the taphole tamping cannon and the supporting structure. This control rod thus determines the orientation of the taphole cannon in a known manner depending on the pivoting angle of the boom.
- the control rod can also be articulated on this swivel arm instead of on the supporting structure.
- the coupling device comprises a first coupling head at the end of the piston rod of the hydraulic cylinder and a second coupling head on the support structure.
- the two coupling heads are designed to complement each other. In the working position of the boom, the first and second coupling heads are arranged relative to one another such that the first coupling head can be supported on the second coupling head by extending the piston rod of the hydraulic cylinder.
- the boom is out of its Working position swiveled towards the rest position, the first coupling head detaches from the second coupling head and the hydraulic cylinder can now be pivoted freely with the boom.
- the boom advantageously has a spring-centered alignment device for the hydraulic cylinder articulated to the boom. This alignment device ensures that the hydraulic cylinder always comes to a favorable coupling position when the boom is pivoted into its working position.
- FIG. 1 shows a plan view of a tap hole tamping machine with a swiveling device according to the invention, in the rest position in front of the blast furnace;
- Figure 2 is a plan view of the taphole tamping machine of Figure 1, in the working position in front of the blast furnace; 3 shows a section along the section line 3-3 of Figure 1;
- Figure 4 shows a section along the section line 4-4 of Figure 3;
- FIG. 5 shows a section as in Figure 3, with an alternative locking device, the latter being shown in the unlocked position;
- Figure 6 the same section as in Figure 5, wherein the pivoting device is shown in the locked position.
- Figure 7 a plan view as in Figure 1, with an alternative embodiment of the pivoting device
- Figure 8 a plan view as in Figure 2, with the pivoting device of Figure 7;
- FIG. 9 a section along the broken section line 9-9 of FIG. 8.
- FIG. 1 shows a taphole tamping machine 10 according to the invention in a rest position in front of a blast furnace 12, which is indicated schematically by an arc.
- This taphole machine 10 consists in essentially from a swivel device 14 according to the invention and a known tap hole cannon 16. The latter is not described further here.
- the pivoting device 14 comprises a columnar base 18, which forms a support structure for a boom 20. Instead of being set up on the floor as a base, this supporting structure 18 can of course also be suspended.
- the boom 20 is pivotally supported at one end in this support structure 18.
- the position of the pivot axis of the boom 20 in the support structure 18 is shown by the reference numeral 22. This axis 22 mostly inclined slightly towards the blast furnace relative to the vertical.
- the tap hole cannon 16 is pivotally suspended.
- the position of the pivot axis of the tap hole cannon 16 in the boom 20 is shown by the reference numeral 24.
- a relatively short, preferably double-acting hydraulic cylinder 28 lies directly along the boom 20.
- This hydraulic cylinder 28 in the embodiment shown it is the cylinder base, is connected to the front end of the boom 20 by means of a first swivel joint 32.
- the boom 20 advantageously has a lateral projection on which the first swivel joint 32 is attached.
- the latter is pivotally mounted in the support structure 18 so that its pivot axis is essentially coaxial with the pivot axis of the boom 20.
- FIG. 3 shows the mounting of the boom 20 and the swivel arm 38 in the support structure in more detail.
- the boom 20 has at its supported end a cylindrical socket 40 which is fastened to a flange 44 of the support structure 18 by means of a ball bearing 42.
- the outer ring 46 of this ball bearing 42 ie the ring to which the socket 40 is attached, forms a ring gear 48.
- the reference numeral 50 is a Rotation motor referred to, which can be designed for example as a hydraulic motor or electric motor.
- This rotary motor 50 is attached to the flange 44 and can be engaged in the ring gear 48 by means of a pinion 52.
- the rotary motor 50 can consequently pivot the rotatably mounted boom 20 about the axis 22.
- the exact angular position of the boom 20 is detected by an angle encoder 51 when pivoting.
- the latter like the rotary motor 50, is attached to the flange 44 and can be engaged in the ring gear 48 by means of a pinion 53
- the swivel arm 38 is rotatably supported by means of a ball bearing 54.
- the inner ring 56 of the ball bearing 54 is fastened to the support structure 58 with a second flange 58, and the outer ring 60 is fastened to the swivel arm 38.
- the ball bearing 54 is coaxial with the ball bearing 42 so that the pivot axis 22 of the arm 20 is identical to the pivot axis of the pivot arm 38.
- a locking device is designated globally in FIG. 3 by reference numeral 62.
- This locking device 62 enables the swivel arm 38 to be locked in a rotationally fixed manner on the support structure 18.
- it comprises a locking bolt 64 which can be inserted and executed in an elongated hole 66 of an end plate 68 of the support structure 18 (see also FIG. 4).
- the locking bolt 64 is formed by the piston of a short-stroke cylinder 70 fastened on the swivel arm 38.
- the reference numerals 72, 74 denote flexible hydraulic connection lines of the hydraulic cylinder 28 which are shown schematically in FIG. These hydraulic connection lines 72, 74 are advantageously integrated into a hydraulic circuit 78 via a rotary connection 76.
- the lower part of the rotary connection is fastened to the support structure 18 in a rotationally fixed manner, the upper part to which the lines 72, 74 are connected, on the other hand, is freely rotatable.
- the pivoting device 14 when viewed kinematically, is actually a when the pivoting arm 38 is locked is closed three-part swivel gear, the support structure 18 forms the frame, the boom 20 forms the driven link, and the hydraulic cylinder 28 closes the transmission between the support structure and the boom as a thrust member.
- the swivel arm 38 and the locking device 62 thus form a coupling device which is connected in series with the hydraulic cylinder 28 and by means of which the hydraulic cylinder 28 can be disengaged from the swivel gear when the boom 20 is pivoted by the rotary motor 50 .
- Piston rod of the hydraulic cylinder 28 is completely retracted.
- Locking device 62 is unlocked, i.e. the hydraulic cylinder 28 is from the
- Hydraulic cylinder 28 is connected to the boom 20, is here with the
- the boom in its working position lies at a certain angular position of the boom 20 of the locking bolt 64 above the elongated hole 66 in the support structure 18.
- the short-stroke cylinder 70 can be actuated, the locking bolt 64, which has been retracted so far, in the Elongated hole 66 of the support structure 18 occurs and assumes the position shown in FIG. 3.
- the extension of the locking bolt 64 is advantageously triggered via the angle sensor 51, depending on the angular position of the arm 20. If the locking bolt 64 is inserted into the elongated hole 66, the piston rod of the hydraulic cylinder 28 can be extended.
- the pivot arm 38 is pivoted in the opposite direction of the arrow 80 until the locking bolt 64 abuts a first end 82 of the elongated hole 66 in the support structure 18.
- the hydraulic cylinder 28 is integrated into the swivel gear for transmitting a contact pressure to the boom 20.
- the hydraulic cylinder 28 is supported on the support structure 18 via the swivel arm 38 and the locking bolt 64 in order to exert a moment of force on the boom 20, as a result of which the taphole cannon is pressed against the taphole.
- the piston rod of the hydraulic cylinder 28 is retracted so that the stuffing gun 16 is subsequently torn away from the tap hole.
- the locking bolt 64 first moves in the elongated hole 66 until it abuts a second end 84 of the elongated hole 66 in the support structure 18.
- the hydraulic cylinder 28 is integrated into the swivel gear for transmitting an opposing force of force to the boom 20.
- it is supported on the support structure 18 via the pivot arm 38 and the locking bolt 64 in order to pivot the boom 20 away from the blast furnace 12.
- the hydraulic cylinder 28 is actuated to press on or tear off the tap hole cannon 16, the rotary motor 50 is advantageously idling.
- the taphole cannon 16 is advantageously aligned with the taphole via a control rod. It could be a classic control rod Execution arrive, which is hinged at one end to a fixed point of the support structure 18 and at the other end to the taphole cannon 16 (see for example Figures 7 and 8). However, a new control rod arrangement is shown in FIGS. 1 and 2. This is a variable-length control rod 90 which is hinged at one end to the swivel arm 38 and at the other end to the taphole cannon 16. The length of the control rod 90 is changed via a built-in lifting drive, for example a hydraulic cylinder 92 or a spindle drive.
- a built-in lifting drive for example a hydraulic cylinder 92 or a spindle drive.
- the length of the control rod 90 is changed synchronously by pressurizing the hydraulic cylinder 92.
- the control rod 90 is supported here on the swivel arm 38 blocked by the hydraulic cylinder 28 in order to swivel the taphole cannon 16 about the swivel axis 24.
- This control rod arrangement has significant advantages.
- the control rod 90 is always on the same side of the boom 20. In other words, the control rod 90 does not have to cross the boom 20 when pivoting. This reduces the overall height of the machine.
- the alignment of the taphole cannon can be made much more flexible when swiveling than with a classic control rod. For example, a comparison of FIGS. 1 and 7 shows that the machine from FIG. 1 has a much more compact position than the machine from FIG. 7. It should also be emphasized that in this embodiment the boom 20 can perform a complete rotation about its pivot axis 22.
- This locking device comprises a swivel bolt 96 on the support structure 18 and at least one abutment 98 on the swivel arm 38.
- the swivel bolt 96 is shown in the unlocked position of the locking device.
- the pivot bolt 96 is shown abutting the abutment 98.
- a shock absorber can be integrated very easily Coupling the hydraulic cylinder 28 dampened in the swivel gear.
- the swivel device advantageously has two abutments that are angularly spaced apart, the swivel bolt being in contact with the taphole cannon 16 against the first abutment and when the taphole cannon 16 is torn loose against the second abutment.
- This coupling device comprises a first coupling head 110 at the end of the piston rod 130 of the hydraulic cylinder 128, and a second coupling head 112 on the support structure 18.
- the second coupling head 112 which is complementary to the first coupling head 110, is designed as a fixed point on the support structure 18.
- the first and second coupling heads 110, 122 are arranged relative to one another in such a way that the first coupling head 110 can be supported on the second coupling head 112 by extending the piston rod 130 of the hydraulic cylinder 128.
- the hydraulic cylinder 128 is coupled into the swivel gear for transmitting a contact pressure to the boom 20.
- the hydraulic cylinder 128 is articulated to a projection 132 of the boom 20.
- a lever 134 connects its pivot axis to a spring-centered alignment device 136 on the boom 20.
- This alignment device 136 aligns the disengaged hydraulic cylinder 128 essentially parallel to the boom 20 and thus facilitates the coupling of the two coupling heads 110 and 112 in the working position of the boom 20.
- the two coupling heads 110 and 112 are shown in the engaged position. It can be seen that the first coupling head 110 has two pins 140 ', 140 "which are arranged symmetrically to the axis 144 of the hydraulic cylinder 128. In the engaged position, these pins 140', 140" are in corresponding bearing recesses 142 ', 142 "(see FIG 7) of the second coupling head 112.
- the reference numeral 146 shows a hole in the first coupling head 110 through which a locking bolt 148 can be pushed through. With the aid of this locking bolt 148, the first Coupling head 110 can be mechanically locked in the support structure, so that the hydraulic cylinder 128 can also be used to tear the tap hole cannon 16 from the tap hole.
- the locking bolt 148 can be actuated, for example, by a small hydraulic cylinder 150 which is attached to the support structure 18.
- the rotary motor 50 can also be designed to tear the tap hole cannon 16 away from the tap hole.
- the moment of force that is required for this is in fact significantly smaller than the moment of force that is required for pressing the tap hole cannon 16.
- the swivel devices described are particularly advantageous when a large swivel angle and a large contact pressure are required. Other advantages are their compactness and their low oil absorption. It should be noted that a low oil intake not only has a positive effect on the design of the hydraulic system, but in most cases also has a positive influence on the energy consumption of the swivel device.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Jib Cranes (AREA)
- Forklifts And Lifting Vehicles (AREA)
- Load-Engaging Elements For Cranes (AREA)
- Vehicle Body Suspensions (AREA)
- Shovels (AREA)
- Actuator (AREA)
- Spray Control Apparatus (AREA)
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
LU90093A LU90093B1 (de) | 1997-07-16 | 1997-07-16 | Schwenkvorrichtung mit Ausleger |
LU90093 | 1997-07-16 | ||
PCT/EP1998/004129 WO1999004044A1 (de) | 1997-07-16 | 1998-07-04 | Schwenkvorrichtung mit ausleger |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0994971A1 true EP0994971A1 (de) | 2000-04-26 |
EP0994971B1 EP0994971B1 (de) | 2001-10-10 |
Family
ID=19731699
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98939615A Expired - Lifetime EP0994971B1 (de) | 1997-07-16 | 1998-07-04 | Schwenkvorrichtung mit ausleger |
Country Status (11)
Country | Link |
---|---|
US (1) | US6248288B1 (de) |
EP (1) | EP0994971B1 (de) |
KR (1) | KR20010021763A (de) |
CN (1) | CN1075115C (de) |
AT (1) | ATE206767T1 (de) |
AU (1) | AU8806198A (de) |
BR (1) | BR9810889A (de) |
DE (1) | DE59801701D1 (de) |
HK (1) | HK1027599A1 (de) |
LU (1) | LU90093B1 (de) |
WO (1) | WO1999004044A1 (de) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2468910B (en) * | 2009-03-27 | 2011-05-11 | Siemens Vai Metals Tech Ltd | A taphole drill |
CN102839245A (zh) * | 2012-09-04 | 2012-12-26 | 无锡市长江液压缸厂 | 液压泥炮的曲臂与液压缸连接结构 |
CN102827978A (zh) * | 2012-09-04 | 2012-12-19 | 无锡市长江液压缸厂 | 液压泥炮的液压管路连接结构 |
CN103352094B (zh) * | 2013-07-04 | 2015-01-21 | 中冶京诚工程技术有限公司 | 旋转式揭盖机及高炉铁沟的旋转式揭盖方法 |
CN106113080A (zh) * | 2016-07-28 | 2016-11-16 | 苏州优银机械有限公司 | 一种同心连接的工业悬臂连接组件 |
CN106439177B (zh) * | 2016-09-22 | 2018-11-09 | 南京金匡环保科技有限公司 | 肘杆爆开式冲击快放阀 |
CN114888273A (zh) * | 2022-05-19 | 2022-08-12 | 湖南镭目科技有限公司 | 一种管路固定装置 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT327247B (de) | 1970-11-27 | 1976-01-26 | Wurth Anciens Ets Paul | Vorrichtung zum stopfen des stichloches eines schachtofens |
DE2822605C2 (de) * | 1978-05-24 | 1987-01-15 | Dango & Dienenthal Maschinenbau GmbH, 5900 Siegen | Schwenkvorrichtung, insbesondere für Stichlochstopfmaschinen |
US4247088A (en) | 1978-10-05 | 1981-01-27 | Ishikawajima-Harima Jukogyo Kabushiki Kaisha | Mud gun |
CN86200020U (zh) * | 1986-01-07 | 1986-10-22 | 北京钢铁学院 | 液压矮泥炮 |
LU87926A1 (fr) * | 1991-04-26 | 1992-11-16 | Wurth Paul Sa | Procede de bouchage du trou de coulee d'un four a cuve et machine de bouchage pour la mise en oeuvre de ce procede |
-
1997
- 1997-07-16 LU LU90093A patent/LU90093B1/de active
-
1998
- 1998-07-04 US US09/462,623 patent/US6248288B1/en not_active Expired - Fee Related
- 1998-07-04 CN CN98807136A patent/CN1075115C/zh not_active Expired - Fee Related
- 1998-07-04 KR KR1020007000326A patent/KR20010021763A/ko not_active IP Right Cessation
- 1998-07-04 AU AU88061/98A patent/AU8806198A/en not_active Abandoned
- 1998-07-04 BR BR9810889-1A patent/BR9810889A/pt not_active Application Discontinuation
- 1998-07-04 DE DE59801701T patent/DE59801701D1/de not_active Expired - Fee Related
- 1998-07-04 EP EP98939615A patent/EP0994971B1/de not_active Expired - Lifetime
- 1998-07-04 WO PCT/EP1998/004129 patent/WO1999004044A1/de not_active Application Discontinuation
- 1998-07-04 AT AT98939615T patent/ATE206767T1/de not_active IP Right Cessation
-
2000
- 2000-10-25 HK HK00106777A patent/HK1027599A1/xx not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of WO9904044A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO1999004044A1 (de) | 1999-01-28 |
DE59801701D1 (de) | 2001-11-15 |
BR9810889A (pt) | 2000-09-26 |
ATE206767T1 (de) | 2001-10-15 |
KR20010021763A (ko) | 2001-03-15 |
LU90093B1 (de) | 1999-01-18 |
CN1263562A (zh) | 2000-08-16 |
US6248288B1 (en) | 2001-06-19 |
CN1075115C (zh) | 2001-11-21 |
HK1027599A1 (en) | 2001-01-19 |
EP0994971B1 (de) | 2001-10-10 |
AU8806198A (en) | 1999-02-10 |
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