EP2900397A1 - Outil de travail à main, outil élargisseur à main, système piston/cylindre hydraulique et procédé pour faire fonctionner un outil de travail à main - Google Patents

Outil de travail à main, outil élargisseur à main, système piston/cylindre hydraulique et procédé pour faire fonctionner un outil de travail à main

Info

Publication number
EP2900397A1
EP2900397A1 EP13770460.7A EP13770460A EP2900397A1 EP 2900397 A1 EP2900397 A1 EP 2900397A1 EP 13770460 A EP13770460 A EP 13770460A EP 2900397 A1 EP2900397 A1 EP 2900397A1
Authority
EP
European Patent Office
Prior art keywords
working
hydraulic piston
rotation
hydraulic
head
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
Application number
EP13770460.7A
Other languages
German (de)
English (en)
Other versions
EP2900397B2 (fr
EP2900397B1 (fr
Inventor
Egbert Frenken
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gustav Klauke GmbH
Original Assignee
Gustav Klauke GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Family has litigation
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Application filed by Gustav Klauke GmbH filed Critical Gustav Klauke GmbH
Publication of EP2900397A1 publication Critical patent/EP2900397A1/fr
Application granted granted Critical
Publication of EP2900397B1 publication Critical patent/EP2900397B1/fr
Publication of EP2900397B2 publication Critical patent/EP2900397B2/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D41/00—Application of procedures in order to alter the diameter of tube ends
    • B21D41/02—Enlarging
    • B21D41/026—Enlarging by means of mandrels
    • B21D41/028—Enlarging by means of mandrels expandable mandrels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/08—Tube expanders
    • B21D39/20—Tube expanders with mandrels, e.g. expandable
    • B21D39/203—Tube expanders with mandrels, e.g. expandable expandable by fluid or elastic material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/08—Tube expanders
    • B21D39/20—Tube expanders with mandrels, e.g. expandable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B33/00—Hand tools not covered by any other group in this subclass
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/02—Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member
    • F15B15/06—Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member for mechanically converting rectilinear movement into non- rectilinear movement
    • F15B15/063—Actuator having both linear and rotary output, i.e. dual action actuator

Definitions

  • the invention relates first to a manual working device with a actuated by an electric motor and / or hydraulic means, a working part having working head, wherein the working part is movable in a traversing direction and the working head, together with the working part, in the circumferential direction Umf to the direction of travel is rotatable. Further, the invention relates to a hand-on wheat for expanding tube ends, with a plurality of segments having expander, which segments, transverse to annenwagides, are arranged in a circle next to each other and radially displaceable by means of the segments acting on the expanding mandrel with respect to the circular arrangement for expanding are.
  • the invention relates to a hydraulic piston / cylinder arrangement, wherein a first, having a longitudinal axis having hydraulic cylinder is received with a first hydraulic piston in a receptacle. Moreover, the invention relates to a method for operating a
  • Manual working device with an actuated by an electric motor and / or by a hydraulic fluid, a working part having working head, wherein the working part is movable in a traversing direction and the working head is rotatable together with the working part, in the circumferential direction to the direction of travel.
  • DE 102 47549 B3 also discloses an expanding device which is actuated by an electric motor and hydraulically actuated, in which expansion segments which can be acted upon by an expanding mandrel are provided.
  • a hand tool in the sense of the present application in particular a hand tool that is operated with external force, be it hydraulically or by an electric motor.
  • the invention is concerned with the task of a hand-held working device, in particular a hydraulically and / or motor-operated hand-Aufweitêtêt specify, which is advantageously formed.
  • the invention is also concerned with the task of specifying an advantageous hydraulic piston / cylinder arrangement and / or to specify a method for operating a manual working device.
  • a possible solution of the problem is given according to a first inventive concept in a manual working device, in which is geared to that the working head is rotatable together with the working part hydraulically and / or by the action of the motor.
  • the motor method of the working part and the rotation of the working head by action of the same motor and / or the total acting hydraulic fluid can be achieved in the manual working device.
  • the segments are movable in the circumferential direction of the circuit arrangement by a hydraulic or possibly via a transmission, motorized force application.
  • the segments can thus be spread not only by such a force application, but also be moved in the circumferential direction. Since there are always gaps with respect to segments, or transitions between individual segments, at which transitions the expansion on a corresponding inner surface of the pipe or pipe end causes nonuniformities, such a displacement of the segments in the direction of a circle can achieve a further position with which such irregularities can be compensated.
  • the first hydraulic cylinder is rotatable in the receptacle, that a second hydraulic cylinder is provided with a second piston and that by means of the second piston on the first Hydraulic cylinder for rotation about the Longitudinal axis is acted upon.
  • the second hydraulic cylinder or the second hydraulic piston can in this case also be arranged in the same receptacle or in a receptacle fixed or fixable to the first receptacle.
  • a solution of the problem results in particular that when triggering a method of the working part without further intervention of a user and a rotation of the working head is performed together with the working part hydraulically and / or by the action of the motor.
  • the user can thus not only with one operation, the process of the working part, in the more concrete case, for example, the Aufweit- process trigger, but at the same time, albeit possibly offset in time to the method of the working part, the rotation of the working head.
  • the rotation of the working head is preferably relative to a handle on which the user holds the hand tool. So he can also apply the required counter-torque against the rotation so at the same time. This is particularly important when it concerns a widening device, as described in the strict sense, since the rotation is preferably carried out here, if still a certain expansion pressure on an example. Inner surface of a pipe end by the working part, possibly expanding mandrels exerted becomes.
  • the hand tool can also consist of a working head, which is connected, for example. Via a hose to a fußbetätigbares or motorized device for generating a hydraulic pressure.
  • the working part between a working position and a starting position is movable and that the rotation in the course of a process of the working part from the working position to the starting position. While in principle the rotation can initially take place independently of a method of the working part, it is correspondingly preferred that a bond to a method of the working part is given. In further detail, it is preferred that the rotation take place when the arbor Beitsteil moved back from the working position to the starting position or has completed this return movement. Relative to the expanding mandrel, this is a movement in which the expanding mandrel is driven back or retracted from the expanded position into the starting position.
  • the rotation of the working head can initially be derived from the movement of the working part.
  • the returning piston which optionally acts on the working part, moves over a stationary rotary spindle, which can be overrun in the opposite direction approximately corresponding to a ratchet mechanism.
  • the rotation is triggered by falling below a certain oil pressure, when the manual working device or the expanding device is actuated hydraulically by the electric motor.
  • a further preferred embodiment relates to the formation of the expansion segments with respect to the rotation.
  • a segment has a greatest extent in the circumferential direction by a first circumferential angle.
  • the rotation in the circumferential direction is effected by a second angle amount, it being provided that the first and the second angle amount are different.
  • This can be achieved favorably that such a rotation, for example, with respect to a further expansion process, such that at a portion of the inner surface of the tube to be expanded, which has previously met the transition between two segments, after the rotation outside the transition between two Is applied to segments.
  • the second angle amount is smaller than the first angle amount, wherein it is especially preferable to provide the second angle amount corresponding to approximately half of the first angle amount accordingly.
  • the working head or the expander head is rotatable without limiting the rotation angle.
  • a rotation always takes place only by an angular amount, which is significantly smaller than it corresponds to a full revolution, ie 360 degrees. For example, a rotation of 15 or 30 degrees.
  • any further rotation takes place in the same direction of rotation, without a rotation angle limit would be given, so the working or expansion head would have to be initially rotated back to allow further rotation in the same direction then.
  • Triggering the rotary movement process of the working head or expander is done without further user intervention is required.
  • a triggering of a working process that is, for example, a pressing or expanding process
  • the rotation takes place in a predetermined time sequence with respect to a triggering of a return travel of the working part or setting part.
  • the rotation can initially begin simultaneously with a triggering of a work process, that is, approximately parallel to the beginning of a movement of a (first) hydraulic piston.
  • the rotation can also take place at the same time beginning at the beginning of a return movement of the (first) hydraulic piston or, more generally, after the end of the working process.
  • the rotation does not take place directly with the triggering of the return travel of the setting part, but with a certain time delay.
  • this time delay can also be predetermined by the fact that it is turned off on the hydraulic pressure acting on the returning actuator, if it is a hydraulic piston / cylinder assembly. Since, in the case of a reversing, the dropping below of a certain pressure level occurs approximately reproducibly in time at the same point in time, starting with the triggering of the return travel, a temporal sequence is achieved to that extent.
  • the movement of the adjusting part and / or the rotation of the working head is effected by a pressurized by the engine hydraulic fluid.
  • one or more, possibly two hydraulic piston / cylinder arrangements are then provided in a suitable manner.
  • the working head or expanding head can not be moved without a motorized action or the action of a pressurized hydraulic fluid.
  • actuation for triggering a work operation with the hand-held implement and more preferably outside the specific time window in the course of the return travel of the actuating part, in which the rotation of the working head takes place, is thus preferably preferred a rigid coupling between the working head and the remaining Device parts given.
  • the movement of the actuating part and / or the rotation of the working head takes place by moving a hydraulic piston in a hydraulic cylinder, wherein the hydraulic piston is biased by a remindstellfe- in an initial position.
  • a first hydraulic piston for moving the actuating part and a second hydraulic piston may be provided, which second hydraulic piston provides the rotation. It is further preferred that the rotation of the second hydraulic piston is loaded in its initial position with a larger biasing force than acting on the control part first hydraulic piston. This at least concerning a first movement section of the first hydraulic piston. The said load results at a given hydraulic pressure by the effective surface of the hydraulic piston on the one hand and the force of the acting return spring on the other. Thus, a movement into a rotational output position of the second hydraulic piston which provides the rotation will be effected in chronological succession only after a movement or initial movement of the first hydraulic piston.
  • a rotational movement of the working head takes place only when the actuating part is retracted or at least substantially backward. is drawn.
  • the mandrel is reduced so far at the start of the rotary movement that the segments are required within the expansible end of the tube without the application of a greater counterforce by the user of the expander direction of rotation can be rotated.
  • the first hydraulic piston has a restoring spring which has a different spring characteristic as a function of the return travel. Namely on a first part of the return path causes a very high spring force and on a further part of the return path causes a lower spring force. In the period in which this high restoring force of the return spring acts, the pressure in the pressurized hydraulic fluid is so high that the second hydraulic piston performs no return movement. Rather, only when the lower spring force of the return spring of the first hydraulic piston acts.
  • FIG. 1 shows a perspective view of a motor-operated expanding device
  • FIG. 2 is a top view of the device of FIG. 1;
  • FIG. 3 shows a cross section through the device according to FIG. 1 or FIG. 2, cut in the plane III-III of the representation according to FIG. 2;
  • 4 shows a cross-sectional view of the device according to FIG. 1 or FIG. 2, cut in the plane IV-IV of FIG. 2;
  • FIG. 6 is an illustration, partially in section, of the expansion apparatus, in which the expanding mandrel is in the expanded position and a tube with flared end region is indicated;
  • FIG. 7 shows an illustration according to FIG. 1 of the device in the working position according to FIG. 6;
  • FIG. 8 shows an illustration according to FIG. 4 of the device in the working position according to FIG. 6;
  • FIG. 9 shows a further illustration according to FIG. 3, relating to a further embodiment, in the unactuated position
  • FIG. 10 is an illustration according to FIG. 9 in the actuated position
  • FIG. 11 shows the construction of a hydraulic manual working device with a widening working head
  • Fig. 12 is a plan view of the article of Fig. 11;
  • FIG. 13 shows a cross section through the article according to FIG. 11 or FIG. 14 shows a schematic view of a stationary hydraulic device with an expansion head connected via a hose;
  • FIG. 15 shows a cross section through the article according to FIG. 14 in the area of the expansion head and hose connection.
  • the hand widening device 1 further has a working head designed as a widening head 2, which serves for widening pipe ends (see also comparison FIGS. 3 and 6).
  • the working head 2 further has a spreading mandrel 3, see approximately Figures 2 and 3, formed control part.
  • the expander 2 in the embodiment together with the expanding mandrel 3, is motorized, d. H. ultimately triggered by the activity of the electric motor rotatable. Namely about a also the direction of travel of the expanding mandrel 3 corresponding first longitudinal axis y, see arrow P.
  • the widening head 2 has, in a further detail, segments 4 which are movable radially outward through the expanding mandrel 3 in order to expand a pipe end. These segments 4 are arranged in a circle next to each other. In the circumferential direction of such a circle K, see also FIG. 7, the segments 4, in the exemplary embodiment also together with the expanding mandrel 3, so that, in any case, no relative movement between the spreading mandrel 3 and the segments 4 results in the rotation the manner described rotatable.
  • the longitudinal axes x, y may also be provided in a deviating from a right angle extension, in particular at an obtuse angle.
  • the expansion segments 4 are formed in a circle-segment-like manner in cross-section and have a length 1 which can be inserted into a tube end and which preferably corresponds to the overall diameter. This corresponds to the summarized segments in the non-actuated state or is greater, approximately up to two or three times the diameter.
  • a stop wall 7 which surrounds the segments 4 in a vertical and annular manner is formed. It serves to limit the introduction of the segments 4 in a pipe end to be expanded.
  • the expanding mandrel 3 is acted upon by a first hydraulic piston 9, which is arranged in a first hydraulic cylinder 10. Both the expanding mandrel 3 and the hydraulic piston 9 move along the first longitudinal axis y. In the embodiment and preferred, this also has in particular for the implement generally and / or the hydraulic piston / cylinder arrangement as such meaning, the first hydraulic cylinder 10 together with the therein movably arranged hydraulic piston 9 and the working part, here the expanding mandrel 3 and a total of the working head 2, rotatably arranged.
  • the first hydraulic cylinder 10 is rotatably mounted in a receiving head 11.
  • a first larger pot-shaped recess 12 is formed in detail in the receiving head 11, which in any case exceeds an inner diameter, but preferably also exceeds an outer diameter of the first hydraulic cylinder 10 in its dimension.
  • the receiving head 11 is preferably a second, also coaxial with the first longitudinal axis y preferably formed and smaller diameter recess 13 is formed, in which a tapered shank of the first hydraulic cylinder 10 is received.
  • a seal is also provided only in the region of this tapered shank 14, in the embodiment by means of this according to a Einlegeut sealing O-ring 15. This is also achieved by the way that the recess 12 remains free of hydraulic fluid.
  • a second hydraulic piston 16 is provided, which runs in a second hydraulic cylinder 17.
  • This second hydraulic piston 16 is preferably provided solely for the rotational movement of the first hydraulic piston 10 or the working head 2.
  • Both the first hydraulic piston 9 and the second hydraulic piston 16 are preferably acted upon by the same hydraulic fluid.
  • the same hydraulic pressure is preferably applied to both hydraulic pistons 9, 16 in each case.
  • hydraulically parallel line 19 for the hydraulic fluid, which opens into the recess 13 and through a bore 20 in the tapered shaft portion 14 of the first hydraulic cylinder 10 for acting on the loading surface 21 of the first Hydraulic piston 9 is passed.
  • the hydraulic expansion device 1 is in the direction of the second longitudinal axis x, following the receiving head 11, as seen in the direction of the arrow R, constructed the same as that of such WO 03/084719 A2 (or the US 7,254,982 B2, US 7,412,868 B2 or US 7,412,877 B2) known hydraulic Ar- beitsêt.
  • a pump which is acted upon by a transmission and to which transmission subsequently, as already described preferably located in the grip region 6, an electric motor connects and finally a plug-in mechanism for the Accumulator and the accumulator.
  • the first hydraulic cylinder 10 in the exemplary embodiment and preferably in its area accommodated in the first recess 12 has an outer toothing 22, which is formed overall following a circular line.
  • Individual teeth 23 are in this case formed so that they, all teeth 23 in the same direction, in a first circumferential direction Ui have an overflow slope 24 and in the second circumferential direction U 2 a blocking breast 25.
  • This preferably extends with respect to a tangent to the addressed circle vertical or radial. In the latter case, she would have an undercut accordingly. It can also run with a positive inclination on the contrary as long as there is no overrun by the following entrainment part described below.
  • a Mitschleppteil 26 is connected, which extends during extension of the hydraulic piston 16, so in pressurization, in which operating condition in principle, the working part or the expanding mandrel, in an attack movement to one or more of the following in the circumferential direction Ui teeth 23rd moved, see also Figure 8.
  • a blocking member 27 is provided which has a disengage, for example, against spring force blocking head 28.
  • the blocking head 28 is evident in the position shown in Figure 4 on the blocking breast 25 of a tooth 23, such that the tendency of the movement of the Mitschleppteils 26 possible rotation of the working head 2 in the circumferential direction Ui is thereby blocked.
  • the second hydraulic piston 16 is, like the first hydraulic piston 9, loaded by a second return spring 30 in its initial position, see about Figure 4.
  • the load at acting hydraulic pressure is given by the spring force of the return spring 30 on the one hand and the effective piston surface on the other hand, in the rest position, Figure 4, the second hydraulic piston 16 is greater than that of the first hydraulic piston 9 (where given by the action of the first return spring 29 and effective area of action of the first hydraulic piston 16) in this respect.
  • the Mitschleppteil 26 is preferably rotatably connected in further detail with the second hydraulic piston 16 by means of a rotation axis 31. More preferably, it is biased by a compression spring 32 in a relation to the pivoted position shown in Figure 4 pivoted position shown in FIG 8. During the advancement of the second hydraulic piston 16, it is thus ensured that an engagement of the front hook section 33 of the drag-along part 26 takes place behind a further tooth 23. If, in the course of a pressing or working movement of the working part or of the expanding mandrel 3, the hydraulic medium has reached a maximum pressure predetermined in the exemplary embodiment, the return valve opens and both the first hydraulic piston 9 and the second hydraulic piston 16 run in the direction their starting position back, because according to the back pressure of the hydraulic fluid decreases.
  • the second hydraulic piston 16 pulls the first hydraulic cylinder 10 in the circumferential direction U 2 by means of the drag-along part 26 and thus rotates the working head 2.
  • the drag-along part 26 abuts against an inner surface 35 of the wall 43 of the receiving head 11 with a back 34. Since the drag-along part 26 is thus prevented from moving radially outward, in such a state, which is not acted upon by hydraulic fluid, the first hydraulic cylinder 10 can be rotated by the action of the drag-on part 26 and the blocking part 27 picking head 11.
  • a user must capture a certain restoring force of the device by hand, which is significantly facilitated by the arrangement of the working head 2 and the first hydraulic cylinder 10 corresponding to the first longitudinal axis y and the handle portion 6 corresponding to the second longitudinal axis x.
  • the working head 2 is further exchangeably fixed to the first hydraulic cylinder 10. In this case, preference is such that the expanding mandrel 3 is not exchanged.
  • the releasable attachment is achieved in the embodiment by a screw 39 between the working head 2 and an outer surface of the first hydraulic cylinder 10, wherein an reached end position by a locking screw 40 is securable.
  • attachment part 41 can be exchangeable, which supports the segments 4.
  • the attachment part 41 may be fixed to the first hydraulic cylinder 10 in the manner described intermediate part 42 front side facing the first end of the device.
  • FIGS. 9 and 10 there is shown an alternative embodiment of the expander, or more generally the first and second hydraulic piston / cylinder assemblies. Of importance here is that a certain flow characteristic with respect to retraction of the working part or of the expanding mandrel 3 and the rotation of the first hydraulic cylinder 10 takes place.
  • the first return spring 29 is formed in two parts. Namely, in a first part spring 44 and a second part spring 45.
  • the second part spring 45 which is arranged assigned to the first free end egg, a greater spring force than the first part spring 44. Also visible is preferably the second part spring in the embodiment of Tel - Lerfedern composed, while the first part of spring 44 is a conventional coil spring.
  • the spring force of the first part spring 44 is selected such that at the beginning of a return travel, ie from the position according to FIG. 10, a high pressure in the hydraulic medium is thereby achieved in that the second hydraulic piston 16 does not retract until complete expansion of the first part spring 44 of the first return spring 29 has been achieved.
  • first part spring 44 is supported on the one hand on an end-side inner surface of the first hydraulic cylinder 10, on the other hand on an intermediate flange 47, which is relatively movable to the second hydraulic piston 16, surrounding this, arranged.
  • the intermediate flange 47 also serves to support the second part spring 45 in the direction of the first free end egg.
  • FIGS. 11 to 13 another embodiment of a hand-held implement is shown.
  • the manual tool 48 is operated by pivoting the handles 49 and 50.
  • the handle 49 which is so far firmly - except for the here essential rotary mobility of the working head - connected to the working head, be referred to as a fixed handle.
  • the handle 50 is a movable handle.
  • a hydraulic pressure is generated with the movable handle 50 via a pump arrangement 51, which may be designed in detail according to EP 927 305 B1 (US Pat. No. 6,206,663 B1).
  • a hydraulic storage container 52 for example, is accommodated in the stationary handle 49.
  • the two-part process is then carried out in the manner described above in order to carry out a widening process.
  • te hydraulic piston 16 and the first hydraulic piston 9 acted upon. Also in this embodiment for carrying out a wide-range ganges.
  • a drive unit 53 is provided, with which in this embodiment hydraulic pressure is generated and hydraulic fluid is passed through a connected hydraulic hose 54 to the working head connected to the other end of the hydraulic hose 54 via this embodiment.
  • a first hydraulic piston 9 and a second hydraulic piston 16 are also provided here in the same way in the working head.
  • the working head corresponds in this respect to the prescribed working heads, and the description of a workflow is also true here in the same way.
  • connection nut 55 Via a connection nut 55, a connection is made to a connection part 56 to which the hydraulic hose 54 is finally fastened in the usual way.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Analytical Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Actuator (AREA)
  • Press Drives And Press Lines (AREA)
  • Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
  • Soil Working Implements (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Manipulator (AREA)
  • Shearing Machines (AREA)

Abstract

L'invention concerne un outil de travail à main comprenant une tête de travail actionnée par un moteur électrique et/ou un moyen hydraulique, présentant une partie de travail, cette dernière pouvant être déplacée dans un sens de déplacement et la tête de travail pouvant tourner avec la partie de travail dans la direction par rapport au sens de déplacement. Pour une réalisation avantageuse, il est proposé que la tête de travail puisse être mise en rotation conjointement avec la partie de travail par voie hydraulique et/ou par action du moteur. L'invention concerne également un outil élargisseur à main (1) destiné à élargir des extrémités de tuyau (37), comprenant une tête élargisseuse (2) présentant plusieurs segments (4) qui sont disposés en cercle les uns à côté des autres transversalement à une direction d'élargissement et qui peuvent être déplacés radialement par rapport à la disposition en cercle au moyen d'un mandrin d'écartement (3) agissant sur les segments (4). Pour une réalisation avantageuse, il est proposé que les segments (4) puissent être mis en rotation conjointement avec le mandrin d'écartement par voie hydraulique et/ou par un moteur dans la direction périphérique de la disposition en cercle. L'invention concerne aussi un système piston/cylindre hydraulique. L'invention concerne encore un procédé pour faire fonctionner un outil de travail à main et un outil élargisseur à main actionné par un moteur.
EP13770460.7A 2012-09-28 2013-09-26 Outil élargisseur à main Not-in-force EP2900397B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012109255.9A DE102012109255A1 (de) 2012-09-28 2012-09-28 Handarbeitsgerät, Hand-Aufweitgerät, hydraulische Kolben-/Zylinderanordnung und Verfahren zum Betreiben eines Handarbeitsgerätes
PCT/EP2013/070038 WO2014049035A1 (fr) 2012-09-28 2013-09-26 Outil de travail à main, outil élargisseur à main, système piston/cylindre hydraulique et procédé pour faire fonctionner un outil de travail à main

Publications (3)

Publication Number Publication Date
EP2900397A1 true EP2900397A1 (fr) 2015-08-05
EP2900397B1 EP2900397B1 (fr) 2019-06-19
EP2900397B2 EP2900397B2 (fr) 2022-07-13

Family

ID=49261537

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13770460.7A Not-in-force EP2900397B2 (fr) 2012-09-28 2013-09-26 Outil élargisseur à main

Country Status (14)

Country Link
US (1) US10406586B2 (fr)
EP (1) EP2900397B2 (fr)
KR (1) KR20150064105A (fr)
CN (1) CN104797357B (fr)
AU (1) AU2013322656B2 (fr)
BR (1) BR112015006915A2 (fr)
CA (1) CA2886913A1 (fr)
DE (1) DE102012109255A1 (fr)
ES (1) ES2745257T3 (fr)
IN (1) IN2015DN02591A (fr)
MX (1) MX2015003889A (fr)
RU (1) RU2663668C2 (fr)
WO (1) WO2014049035A1 (fr)
ZA (1) ZA201502847B (fr)

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WO2014049035A1 (fr) 2014-04-03
CA2886913A1 (fr) 2014-04-03
US10406586B2 (en) 2019-09-10
CN104797357A (zh) 2015-07-22
ZA201502847B (en) 2016-11-30
BR112015006915A2 (pt) 2017-07-04
RU2015115942A (ru) 2016-11-20
EP2900397B2 (fr) 2022-07-13
CN104797357B (zh) 2017-08-04
AU2013322656B2 (en) 2017-02-16
US20150258598A1 (en) 2015-09-17
MX2015003889A (es) 2015-11-18
KR20150064105A (ko) 2015-06-10
RU2663668C2 (ru) 2018-08-08
IN2015DN02591A (fr) 2015-09-11
EP2900397B1 (fr) 2019-06-19
ES2745257T3 (es) 2020-02-28
DE102012109255A1 (de) 2014-04-03

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