EP2128381B1 - Tool for removing a cutting tool - Google Patents
Tool for removing a cutting tool Download PDFInfo
- Publication number
- EP2128381B1 EP2128381B1 EP09005840.5A EP09005840A EP2128381B1 EP 2128381 B1 EP2128381 B1 EP 2128381B1 EP 09005840 A EP09005840 A EP 09005840A EP 2128381 B1 EP2128381 B1 EP 2128381B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tool according
- actuating element
- base part
- tool
- chisel
- 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.)
- Active
Links
- 230000033001 locomotion Effects 0.000 claims description 13
- 238000010168 coupling process Methods 0.000 claims description 12
- 238000005859 coupling reaction Methods 0.000 claims description 12
- 230000008878 coupling Effects 0.000 claims description 11
- 239000012530 fluid Substances 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 claims description 4
- 238000003801 milling Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
- E21C35/18—Mining picks; Holders therefor
- E21C35/19—Means for fixing picks or holders
-
- 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
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
- B25B27/023—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same using screws
-
- 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
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
- B25B27/026—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same fluid driven
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
- E21C35/18—Mining picks; Holders therefor
- E21C35/188—Mining picks; Holders therefor characterised by adaptations to use an extraction tool
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/28—Small metalwork for digging elements, e.g. teeth scraper bits
- E02F9/2891—Tools for assembling or disassembling
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49815—Disassembling
- Y10T29/49822—Disassembling by applying force
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/53—Means to assemble or disassemble
- Y10T29/53704—Means to assemble or disassemble tool chuck and tool
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/53—Means to assemble or disassemble
- Y10T29/53796—Puller or pusher means, contained force multiplying operator
- Y10T29/5383—Puller or pusher means, contained force multiplying operator having fluid operator
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/53—Means to assemble or disassemble
- Y10T29/53909—Means comprising hand manipulatable tool
Definitions
- the invention relates to a tool for disassembling a bit, in particular a bit holder, having a base part which receives an actuator, wherein the actuator has a Austreibdorn, and wherein the actuator is adjustable, and wherein the actuator directly or indirectly on a cylinder Piston system or is coupled to an electromotive unit.
- Such tools are used, for example, in road milling machines, recyclers, surface miners, etc. They are used for dismantling chisels, especially shank chisels (round shank chisels).
- the chisels are held clamped in chisel shots.
- the bit receptacles are usually designed as through holes.
- the bit holder itself are mounted on the surface of a Fräswalzenrohres, in particular welded or set exchangeable to the base carriers, which in turn are welded onto the surface of a Fräswalzenrohrs.
- To facilitate the dismantling of the chisel tools are known, as in the DE 296 23 508 U1 are described.
- This tool has two lever arms, which are connected by a joint.
- One of the lever arms forms a Austreibdorn, the other lever forms a handle.
- the Austreibdorn can be introduced with its free end in the bit shots so that it abuts the end of the chisel shank of the driven out chisel.
- the tool can be placed with the second lever against a support shoulder on the Fräswalzenrohr.
- the chisel can then be pushed out of the bit holder with a lever adjustment.
- the Austreibdorn is guidedgefädelt from the chisel. Fiddling with the double lever is difficult in confined mounting space and is time consuming.
- the tool requires a support shoulder on the milling drum, which is not always available.
- Disassembly tools are also known from the prior art, which can be attached with Abziehklauen to the chisel head of the chisel. In this case, a circumferential groove in the chisel head is required, in which engage the Abziehklauen.
- Another disassembly tool is from the WO 2005/005119 A1 known.
- This tool has a servo motor to which a tool changer is coupled.
- a transfer member of the tool changer carries a Austreibdorn.
- This tool has a support arm that can be fixed to the bit holder. To the support arm, a pivot lever is coupled, which carries a handle. The bit holder carries a linearly adjustable plunger. To disassemble the chisel, the swivel lever is attached to the ram with a lever arm turned away from the handle. As a result of an adjustment of the handle, the plunger can be adjusted and pushed out with this the chisel from the bit holder.
- the plunger installed with the chisel holder requires additional parts and assembly work. In addition, it requires a space on the chisel holder, which is unacceptable in modern precision milling.
- this design requires the determination of the bit in a blind hole-like bit holder. This can pollute during operation, resulting in a system failure.
- the actuator is indirectly or directly coupled to a fluid-actuated cylinder-piston system or to an electromotive unit.
- the cylinder can z. B. a fluid cylinder, in particular a hydraulic cylinder, which can be acted upon via an oil circuit. In particular, can thus build a great pressure on the piston and transmit correspondingly large forces on the actuator. In this way chisels can be dismantled reliably without much effort.
- the electromotive unit may, for. B. be a spindle-nut unit, which is driven by an electric motor.
- the actuator is pivotally mounted on the base part about a stationary pivot bearing.
- the base part can be assigned to the bit holder and via the stationary pivot bearing can be a reproducible expulsion realize.
- the base part has a support portion for supporting directly on the bit holder or indirectly on the bit holder, for. B. has a wear plate. Due to the stationary assignment of the tool to the bit holder can be dispensed with additional support parts, such as Abdrückschulter on the Fräswalzenrohr. This can be realized on the Fräswalzenrohr a compact arrangement of the individual bit holder and there is no additional effort required, as is the case in the prior art.
- such locations are used on the bit holder for the support, which are not exposed to excessive wear, so that the tool can always be recognized reproducible.
- the wear plate which is usually disposed between the bit head and a bearing surface of the bit holder, provides such an ideal support point.
- the support portion may be arranged on a fork-shaped Abuiteil.
- the tool With the fork-shaped Abuiteeil the tool can be attached to the bit holder so that the support section comes to rest laterally of the bit head of the bit.
- the support section can then attack on the wear plate.
- the base part spaced from the support portion has an outer stop surface for attachment to the bit holder.
- a conceivable variant of the invention may be characterized in that the base part has a receptacle in which the actuator is received between two side walls delimiting the receptacle, and in that the side walls have bearing receptacles on which the actuator is pivotably mounted.
- a further preferred variant of the invention provides that the displacement movement of the actuator is limited by means of at least one stop arranged on the base part.
- the actuator can then be limited in its movement. In this case, the movement can then be controlled so that jamming of the steep link in one of its end positions is not possible.
- the actuator In the initial position, the actuator is positioned with appropriate limit by means of a stop so that a light attachment to the bit holder is possible.
- the limitation of the actuating movement of the actuator in the disassembly position prevents the actuator jammed in the bit holder.
- the actuator is movable out of its initial position into the disassembly position, and that the steep member is held spring-biased by a spring element in the starting position. This measure ensures that the actuator, when the cylinder is depressurized, remains in its initial position or returns to it. It goes without saying that z. B. can be dispensed by the use of a double-acting cylinder on the spring preload.
- the base part is indirectly or directly coupled by means of a connection part to a handle part, and that the handle part is pivoted by means of a pivot bearing relative to the base part.
- the Austreibdorn is connected to a lever arm which has a coupling for the pivotable connection of a piston rod, and that the lever is pivotally mounted at a distance from the coupling.
- the FIG. 1 shows a tool 10 with a handle 12.
- a battery is integrated.
- the battery can be charged via two power contacts 11 in a corresponding charging station.
- the battery is used to power an electric motor.
- This electric motor is housed in a neck housing, which is connected to the handle 12.
- housing a cylinder 13 is housed.
- the cylinder 13 is presently designed as a hydraulic cylinder, so that in the neck housing a corresponding hydraulic circuit system is integrated.
- a piston is slidably mounted between two end positions.
- a trigger 12.1 is grown. This trigger 12.1 closes a contact of a circuit and thus activates the electric motor in the attachment housing.
- the electric motor causes in conjunction with the hydraulic system, the adjustment of the piston in the cylinder 13.
- the fluid connections are designed as quick couplings.
- the hoses can be connected to counter-coupling pieces of hoses.
- the hoses may, for example, depart from a hydraulic system of a road milling machine or a surface miner.
- the integrated in the handle 12 lines are guided to the cylinder 13.
- a piston is again housed linearly adjustable.
- the adjustment movement of the piston can be controlled by means of a valve which is controllable via a trigger 12.1 on the handle 12.
- On the cylinder 13 can in the FIG. 4 shown adapter 20 are connected.
- This adapter 20 will be described with reference to FIGS FIGS. 1 and 4 explained in more detail below.
- He has a base part 20.1.
- the base part 20.1 defines a receptacle 20.2 with two side walls 20.4.
- an actuator 60 is pivotally mounted in the form of a lever.
- the actuator 60 has a lever arm 64, to which a Austreibdorn 65 is integrally connected.
- the Austreibdorn 65 is bent formed.
- the free end of Austreibdorns 65 is designed convex spherical.
- the lever arm 64 is provided at its end remote from the Austreibdorn 65 with a bore which forms a bearing seat 63.
- This bearing receptacle 63 is in alignment with corresponding holes in the side walls 20.4. Through the aligned holes and the bearing seat 63, a bearing pin can be pushed through 20.6 and secured by means of retaining rings, as the FIG. 4 illustrated.
- the bearing pin 20.6 forms an axis of rotation according to FIG. 1 vertical to the image plane.
- the lever arm 64 is provided with a coupling 62.
- a piston rod 14 can be connected with its bearing receptacle 15.
- the piston rod 14 carries at its end facing away from the bearing receptacle 15 a collar 16, as the FIG. 4 illustrated.
- connection part 20.10 is integrally formed.
- the FIG. 1 illustrates that the connecting part 20.10 has a cup-shaped receptacle, which communicates via a through hole with the receptacle 20.2 in spatial communication.
- a spring element 20.11 is used in the cup-shaped receptacle.
- the spring element 20.11 is designed as a spiral spring.
- the piston rod 14 is passed through the spiral spring, so that the free end of the piston rod 14 comes into contact with the actuator 60.
- the piston rod 14 comes with its bearing receptacle 15 to the coupling 62 to lie.
- the lever arm 64 has in the region of the coupling 62 two mutually aligned bores, which can be aligned with the bearing receptacle 15 in the piston rod 15.
- the piston rod 14 is provided with its collar 16 against the projecting from the cup-shaped receptacle spring end. Subsequently, by a pressure on the collar 16, the spring element 20.11 are compressed until the bearing seat 15 is aligned with the bores of the coupling 62. Through the aligned holes and the bearing seat 15, a hinge pin can be pushed through. As the FIG. 4 illustrates circular openings 20.5 are present in the side walls 20.4.
- the lever arm 64 can be aligned with its holes on the holes in the coupling 62. Then, the hinge pin can be pushed through the apertures 20.5 in the holes of the lever arm 64 and through the bearing seat 15 therethrough. This makes it easy to connect or disconnect the piston rod 14 perform.
- the piston rod 14 in the in FIG. 1 shown position held spring biased. Thus, the actuator 60 is fixed in this position.
- the adapter 20 can be connected to the neck housing.
- a rotary bearing is formed between the connecting part 20.10 and the attachment housing, so that the attachment housing can be rotated relative to the base part 20.1.
- the piston rod 14 rests with its collar 16 against the piston guided in the cylinder 13.
- the piston in the cylinder 13 is arranged in its, the Ausschiebposition determining end position.
- stops 20.8 and 20.9 are provided in the area of the receptacle 20.2 of the base part 20.1.
- stops 20.8 and 20.9 are used to limit the adjustment of the actuator 60.
- the actuator 60 corresponding mating surfaces, which can be brought into abutment with the stops 20.8 and 20.9.
- the actuator 60 In the FIG. 1 is the actuator 60 to the stop 20.8.
- the actuator 60 In the FIG. 3 If the actuator 60 is applied to the stop 20.9.
- a Ab healedeil 20.13 is integrally formed on the base part 20.1.
- the Ab healedeil 20.13 is fork-shaped and has a support portion 20.14.
- the above-described tool 10 is for disassembling a chisel 50 received in a chisel holder 40.
- the bit holder 40 is replaceably held in a base carrier 30.
- the base support 30 has a plug-in receptacle which receives a plug-in extension of the bit holder 40. With its clamping screw 32, the bit holder 40 can be fixed to the base support 30.
- the base support 30 has a concave support surface 31. With this, it can be placed on the surface of a Fräswalzenrohrs and welded to it.
- the bit holder 40 has a projection 41, in which a bit holder 43 is incorporated as a bore.
- the bit receptacle 43 is accessible on the back by means of a recess 42.
- the chisel 50 is in the present case designed as a round shank chisel.
- the chisel 50 has a chisel head, to which a chisel shaft 51 is integrally formed.
- a clamping sleeve is mounted on the drill collar 51 .
- the clamping sleeve is axially immovable on the drill collar 51, but freely rotatably supported in the circumferential direction.
- the chisel 50 is inserted with its chisel shaft 51 in the bit holder 43 of the chisel holder 40 so that it is held clamped therein by means of the clamping sleeve.
- the chisel 50 In the inserted state, the chisel 50 is supported with its chisel head on a wear protection disk 54, which is mounted on the chisel shaft 51.
- the wear shield 54 is disposed between the bit head and the collet.
- the wear protection disk 54 lies with its side facing away from the bit head on a support surface of the bit holder 40.
- the bit 50 may rotate with its bit on the wear shield 54.
- the drill collar 51 rotates in the clamping sleeve.
- the chisel head of the chisel 50 carries in the usual way a chisel tip 52, for example consisting of hard metal.
- the tool 10 described in the figures is used.
- the tool 10 is placed on the bit holder 40, wherein the Ab coupledeil 20.13 rests with its support portion 20.14 on the front of the wear plate 54.
- the pressing member 20.13 can of course also be indirectly or directly supported at a suitable, arbitrary position of the bit holder 40.
- the base part 20.1 further has a stop surface 20.7, with which the base part 20.1 is supported on the surface of the chisel holder 40.
- a defined assignment of the tool 10 to the bit holder 40 can be effected.
- the electric motor With the actuation of the trigger 12.1, the electric motor is activated in the attachment housing. This promotes hydraulic fluid in the cylinder 13, whereby the piston is displaced in the cylinder 13. Since the piston rests directly or indirectly on the collar 16 of the piston rod 14, this is also in the in FIG. 2 adjusted positions shown. In this adjustment, the spring element 20.11 is compressed.
- the actuator 60 With the adjustment of the piston rod 14, the actuator 60 is pivoted about its bearing seat 63. In this case, then the actuator 60 emerges with its Austreibdorn 65 in the bit holder 43 such that the free end of Austreibdorns 65 comes into contact with the support surface 53 on the drill collar 51. With the adjustment of the actuator 60 of the bit 50 is pushed out of the bit holder 43. The support section 20.14 holds the wear shield 54 in position. Accordingly, the clamping sleeve pushes into the cylindrical bore of the wear protection disk 54. The clamping sleeve is compressed radially inwardly, whereby their clamping effect is partially compensated. As a result, a lower expulsion force is required. The adjusting movement of the actuator 60 is limited by the stop 20.9.
- FIGS. 5 to 8 are shown tool variants.
- the illustrations according to Figure 5 to 7 corresponds to the change-holder system consisting of base support 30, bit holder 40 and chisel 50 of the arrangement according to FIGS. 1 to 4
- the FIG. 8 illustrates that the tools according to the invention 10 is not limited solely to the use of these principle known change systems. Rather, an application is conceivable in which the bit holder 40 is welded directly to a Fräswalzenzenrohr F (see weld 44).
- the tool design according to FIG. 5 corresponds essentially to the design of the tool according to FIGS. 1 to 4 , Only the actuator 60 is constructed differently.
- This actuator 60 is designed as a planar transmission in the form of a space-saving four-bar system.
- two levers 61, 65.2 are used, which are pivotally connected via pivot bearings 65.1, 65.4 to a Austreibdorn 65.
- the pivot axes are aligned perpendicular to the image plane.
- the second lever 65.2 is coupled at its, the Austreibdorn 65 opposite end via a pivot bearing 65.3 to the side walls 20.4.
- the pivot axes are again perpendicular to the image plane.
- FIG. 5 shows the starting position of the tool.
- the piston rod 14 is moved linearly downwards in the image plane.
- the coupled via the Austreibdorn 65 levers 61 and 65.2 are pivoted synchronously clockwise.
- the Austreibdorn 65 moves into the bit holder 43 and pushes the bit 50 on its support surface 53 from the bit holder 43, overcoming the clamping force of the clamping sleeve S.
- FIG. 6 shows a further tool design, wherein the adapter 20 again substantially the adapters 20 according to the tools 10 after Figure 1 to 5 equivalent. It will therefore be discussed only on the different features and otherwise reference is made to the above statements.
- the connecting part 20.10 of the adapter 20 is provided with a receptacle into which a bent tube 66.2 is inserted and held therein.
- this tube 66.2 is a pliable element 66.7, in this case a link chain, as it is used in principle in the drive technology used.
- the link chain is pivotally attached at its one end to the bearing seat 15 of the piston rod (14). At the other end of the chain, the last chain link forms the expelling mandrel 65.
- FIG. 6 again shows the tool home position. Upon actuation of the trigger 12.1, the piston rod (14) (down) is moved. It enters a cylindrical connection area of the tube 66.2.
- the link chain is moved in the tube 66.2, wherein the tube 66.2 prevents buckling of the link chain.
- the Austreibdorn 65 is supported on the support surface 53 of the chisel 50 and pushes him from the bit holder 43 from.
- a fluid 66.3 preferably filled a liquid in the tube 66.2.
- a piston 66.1 is connected by means of a cross-head joint.
- the piston 66.1 seals with its outer contour with the aid of a sealing ring on the inner wall of the cylindrical portion of the tube 66.2.
- a second piston 66.6 is used sealed in the other pipe end, which is also cylindrical.
- the piston 66.6 can be adjusted linearly and carries the Austreibdorn 65.
- the tube 66.2 can dive through the recess 42 in the bit receptacle 43, so that the Austreibdorn 65 of the support surface 53 of the bit 65 is opposite.
- the piston 66.1 In an adjustment of the piston rod 14, the piston 66.1 is inserted into the tube 66.2.
- the fluid 66.3 transmits this adjusting movement to the second piston 66.6.
- the Austreibdorn 65 pushes the bit 50 from the bit holder 43 from.
- the spring element 20.11 presses the actuator 60 in the starting position.
- the piston 66.1 is pulled upwards.
- the second piston 66.6 is also sucked back into its starting position by the fluid 66.3.
- FIG. 8 a tool 10 is shown, in which an electric motor 66.8 is integrated in the handle 12.
- the output shaft 66.9 of the electric motor 66.8 is equipped with a spindle 66.11. With the electric motor 66.8 turned away, the output shaft is rotatably fixed in the adapter 20 by means of a ball bearing 66.10. Further, the actuator 60 is received in the adapter 20 between the two side walls 20.4, which in the present case has the shape of a disc.
- the actuator 60 is provided at the edge with a toothing 66.12, which meshes with the spindle 66.11.
- the actuator 60 is held in the adapter 20, wherein the bearing receptacle 63 forms the pivot axis.
- the actuator 60 carries the Austreibdorn 65 which is integrally formed and eccentric to the bearing seat 63.
- the tool 10 can be used again with the Austreibdorn 65 through the recess 42 in the bit holder 43, so that the Austreibdorn 65 of the support surface 53 of the bit 50 is opposite.
- the electric motor 66.8 is activated.
- the output shaft 66.9 is set in rotary motion.
- the spindle 66.11 rotates the actuator 60 clockwise via the teeth 66.12.
- About the spacing of the teeth 66.12 to the pivot bearing 53 a sufficiently large lever arm is formed.
- the Austreibdorn 65 pushes with a rotation of the actuator 60, the bit 50 from the bit holder 43 from.
- the electric motor controls 66.8 changes the direction of rotation until the actuator 60 again in his FIG. 8 has reached the end position shown. In this position, the electric motor 66.8 then turns off.
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- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Percussive Tools And Related Accessories (AREA)
- Details Of Cutting Devices (AREA)
- Automatic Tool Replacement In Machine Tools (AREA)
- Road Repair (AREA)
- Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Treatment Of Fiber Materials (AREA)
Description
Die Erfindung betrifft ein Werkzeug für die Demontage eines Meißels, insbesondere aus einem Meißelhalter, mit einem Basisteil, das ein Stellglied aufnimmt, wobei das Stellglied einen Austreibdorn aufweist, und wobei das Stellglied verstellbar ist, und wobei das Stellglied mittelbar oder unmittelbar an einem Zylinder-Kolbensystem oder an einer elektromotorischen Einheit angekoppelt ist.The invention relates to a tool for disassembling a bit, in particular a bit holder, having a base part which receives an actuator, wherein the actuator has a Austreibdorn, and wherein the actuator is adjustable, and wherein the actuator directly or indirectly on a cylinder Piston system or is coupled to an electromotive unit.
Solche Werkzeuge kommen beispielsweise bei Straßenfräsmaschinen, Recycler, Surface-Minern etc. zum Einsatz. Sie dienen zur Demontage von Meißeln, insbesondere Schaftmeißeln (Rundschaftmeißeln). Die Meißel sind dabei in Meißelaufnahmen geklemmt gehalten. Die Meißelaufnahmen sind üblicherweise als Durchgangsbohrungen ausgestaltet. Die Meißelhalter selbst sind auf der Oberfläche eines Fräswalzenrohres befestigt, insbesondere aufgeschweißt oder an Basisträgern auswechselbar festgelegt, die wiederum auf der Oberfläche eines Fräswalzenrohrs aufgeschweißt sind. Zur Erleichterung der Demontage der Meißel sind Werkzeuge bekannt, wie sie in der
Dieses Werkzeug weist zwei Hebelarme auf, die mittels eines Gelenks miteinander verbunden sind. Einer der Hebelarme bildet dabei einen Austreibdorn, der andere Hebel bildet ein Griffteil. Der Austreibdorn kann mit seinem freien Ende in die Meißelaufnahmen derart eingeführt werden, dass er endseitig am Meißelschaft des auszutreibenden Meißels anschlägt.This tool has two lever arms, which are connected by a joint. One of the lever arms forms a Austreibdorn, the other lever forms a handle. The Austreibdorn can be introduced with its free end in the bit shots so that it abuts the end of the chisel shank of the driven out chisel.
Das Werkzeug kann mit dem zweiten Hebel gegen eine Stützschulter auf dem Fräswalzenrohr gestellt werden. Der Meißel lässt sich dann mit einer Hebelverstellung aus der Meißelaufnahme ausschieben. Abschließend wird der Austreibdorn aus der Meißelaufnahme herausgefädelt. Das Hantieren mit dem Doppelhebel gestaltet sich im beengten Montageraum schwierig und ist zeitaufwendig. Darüber hinaus benötigt das Werkzeug eine Stützschulter auf der Fräswalze, die nicht immer verfügbar ist. Aus dem Stand der Technik sind auch Demontagewerkzeuge bekannt, die mit Abziehklauen an den Meißelkopf des Meißels angesetzt werden können. Dabei ist eine umlaufende Nut im Meißelkopf erforderlich, in die die Abziehklauen eingreifen. Mit diesen Werkzeugen kann eine Demontage der Meißel nicht mehr durchgeführt werden, wenn die Meißelköpfe so stark verschlissen sind, dass die Nut nicht mehr ausreichend vorhanden ist. Auch Meißel mit abgebrochenen Meißelköpfen können nicht demontiert werden. Solche Werkzeuge sind aus der
Ein weiteres Demontagewerkzeug ist aus der
Ein weiteres Werkzeug ist in der
Weiterhin erfordert diese Bauweise die Festlegung des Meißels in einer sacklochartigen Meißelaufnahme. Diese kann im Betriebseinsatz verschmutzen, was zu einem Systemausfall führt.Furthermore, this design requires the determination of the bit in a blind hole-like bit holder. This can pollute during operation, resulting in a system failure.
Es ist Aufgabe der Erfindung, ein Werkzeug der eingangs erwähnten Art zu schaffen, mit dem Meißel einfach und schnell gewechselt werden können.It is an object of the invention to provide a tool of the type mentioned, with the chisel can be changed easily and quickly.
Diese Aufgabe wird dadurch gelöst, dass das Stellglied mittelbar oder unmittelbar an einem fluidbeaufschlagten Zylinder-Kolbensystem oder an einer elektromotorischen Einheit angekoppelt ist. Der Zylinder kann z. B. ein Fluidzylinder, insbesondere ein Hydraulik-Zylinder sein, der über einen Ölkreislauf beaufschlagbar ist. Insbesondere lässt sich damit ein großer Druck auf den Kolben aufbauen und entsprechend große Kräfte auf das Stellglied übertragen. Auf diese Weise lassen sich Meißel ohne großen Kraftaufwand zuverlässig demontieren. Die elektromotorische Einheit kann z. B. eine Spindel-Mutter-Einheit sein, die von einem Elektromotor antreibbar ist.This object is achieved in that the actuator is indirectly or directly coupled to a fluid-actuated cylinder-piston system or to an electromotive unit. The cylinder can z. B. a fluid cylinder, in particular a hydraulic cylinder, which can be acted upon via an oil circuit. In particular, can thus build a great pressure on the piston and transmit correspondingly large forces on the actuator. In this way chisels can be dismantled reliably without much effort. The electromotive unit may, for. B. be a spindle-nut unit, which is driven by an electric motor.
Gemäß einer bevorzugten Ausgestaltungsvariante der Erfindung kann es vorgesehen sein, dass das Stellglied an dem Basisteil um eine ortsfeste Schwenklagerung schwenkbar gelagert ist. Das Basisteil kann dem Meißelhalter zugeordnet werden und über die ortsfeste Schwenklagerung lässt sich ein reproduzierbarer Austreibvorgang verwirklichen.According to a preferred embodiment variant of the invention, it can be provided that the actuator is pivotally mounted on the base part about a stationary pivot bearing. The base part can be assigned to the bit holder and via the stationary pivot bearing can be a reproducible expulsion realize.
Wenn es vorgesehen ist, dass sich der Austreibdorn mit der Verstellbewegung des Stellglieds auf einer Bogenbahn bewegt, dann kann ein variierender Momentenverlauf verwirklicht werden. Beispielsweise kann bei entsprechender Werkzeugauslegung zu Beginn der Verfahrbewegung ein hohes Moment erzeugt werden, das sich dann kontinuierlich reduziert. Damit wird auf einfache Weise dem Erfordernis Rechnung getragen, wonach zu Beginn der Verfahrbewegung zunächst die Haftreibung zwischen dem Meißel und der Meißelaufnahme überwunden werden muss.If it is provided that the Austreibdorn moves with the adjustment of the actuator on a curved path, then a varying torque curve can be realized. For example, with appropriate tool design at the beginning of the movement, a high torque can be generated, which then reduces continuously. Thus, the requirement is taken into account in a simple manner, according to which at the beginning of the movement movement first the static friction between the bit and the bit receptacle has to be overcome.
Bevorzugter Weise ist es vorgesehen, dass das Basisteil einen Stützabschnitt zur Abstützung unmittelbar an dem Meißelhalter oder mittelbar an dem Meißelhalter, z. B. an einer Verschleißscheibe aufweist. Durch die ortsfeste Zuordnung des Werkzeugs zum Meißelhalter kann auf zusätzliche Stützteile, beispielsweise Abdrückschulter auf dem Fräswalzenrohr verzichtet werden. Damit lässt sich auf dem Fräswalzenrohr eine kompakte Anordnung der einzelnen Meißelhalter verwirklichen und es ist kein zusätzlicher Aufwand erforderlich, wie dies beim Stand der Technik der Fall ist.Preferably, it is provided that the base part has a support portion for supporting directly on the bit holder or indirectly on the bit holder, for. B. has a wear plate. Due to the stationary assignment of the tool to the bit holder can be dispensed with additional support parts, such as Abdrückschulter on the Fräswalzenrohr. This can be realized on the Fräswalzenrohr a compact arrangement of the individual bit holder and there is no additional effort required, as is the case in the prior art.
Bevorzugter Weise werden solche Stellen am Meißelhalter für die Abstützung verwendet, die keinem übermäßigen Verschleiß ausgesetzt sind, so dass das Werkzeug stets reproduzierbar angesetzt werden kann. Insbesondere bietet die Verschleißscheibe, die üblicherweise zwischen dem Meißelkopf und einer Auflagefläche des Meißelhalters angeordnet ist, einen solchen idealen Abstützpunkt.Preferably, such locations are used on the bit holder for the support, which are not exposed to excessive wear, so that the tool can always be recognized reproducible. In particular, the wear plate, which is usually disposed between the bit head and a bearing surface of the bit holder, provides such an ideal support point.
Beispielsweise kann der Stützabschnitt an einem gabelförmigen Abdrückteil angeordnet sein. Mit dem gabelförmigen Abdrückteil kann das Werkzeug so an den Meißelhalter angesetzt werden, dass der Stützabschnitt seitlich des Meißelkopfs des Meißels zum liegen kommt. Hier kann der Stützabschnitt dann auf der Verschleißscheibe angreifen.For example, the support portion may be arranged on a fork-shaped Abdrückteil. With the fork-shaped Abdrückteil the tool can be attached to the bit holder so that the support section comes to rest laterally of the bit head of the bit. Here, the support section can then attack on the wear plate.
Gemäß einer bevorzugten Ausgestaltungsvariante der Erfindung kann es vorgesehen sein, dass das Basisteil beabstandet zu dem Stützabschnitt eine außen liegende Anschlagfläche zum ansetzten an den Meißelhalter aufweist. Mit dem Stützabschnitt und der Anschlagfläche kann eine definierte Zuordnung des Werkzeugs zum Meißelhalter erzeugt werden. Damit lässt sich das Werkzeug stets auf die gleiche Weise dem Meißelhalter zuordnen.According to a preferred embodiment variant of the invention, it may be provided that the base part spaced from the support portion has an outer stop surface for attachment to the bit holder. With the support portion and the stop surface, a defined assignment of the tool to the bit holder can be generated. This always allows the tool to be assigned to the bit holder in the same way.
Eine denkbare Erfindungsvariante kann dadurch gekennzeichnet sein, dass das Basisteil eine Aufnahme aufweist, in der das Stellglied zwischen zwei, die Aufnahme begrenzenden Seitenwänden aufgenommen ist, und dass die Seitenwände Lageraufnahmen aufweisen, an denen das Stellglied schwenkbar gelagert ist.A conceivable variant of the invention may be characterized in that the base part has a receptacle in which the actuator is received between two side walls delimiting the receptacle, and in that the side walls have bearing receptacles on which the actuator is pivotably mounted.
Diese einfache konstruktive Gestaltung ermöglicht eine stabile Führung des Stellglieds zwischen den beiden Seitenwänden.This simple structural design allows stable guidance of the actuator between the two side walls.
Eine weitere bevorzugte Erfindungsvariante sieht vor, dass die Verfahrbewegung des Stellglieds mittels wenigstens eines, am Basisteil angeordneten Anschlags begrenzt ist. Das Stellglied kann dann in seiner Verfahrbewegung begrenzt werden. Dabei lässt sich die Verfahrbewegung dann so steuern, dass ein Verklemmen des Steilglieds in einer seiner Endlagenstellungen nicht möglich ist.A further preferred variant of the invention provides that the displacement movement of the actuator is limited by means of at least one stop arranged on the base part. The actuator can then be limited in its movement. In this case, the movement can then be controlled so that jamming of the steep link in one of its end positions is not possible.
In der Ausgangsstellung ist das Stellglied bei entsprechender Begrenzung mittels eines Anschlags so positioniert, dass ein leichtes Ansetzen an dem Meißelhalter möglich ist. Die Begrenzung der Stellbewegung des Stellglieds in der Demontageposition verhindert, dass das Stellglied in der Meißelaufnahme verklemmt.In the initial position, the actuator is positioned with appropriate limit by means of a stop so that a light attachment to the bit holder is possible. The limitation of the actuating movement of the actuator in the disassembly position prevents the actuator jammed in the bit holder.
Hierbei kann es insbesondere vorgesehen sein, dass das Stellglied aus seiner Ausgangsstellung heraus in die Demontagestellung bewegbar ist, und dass das Steilglied mittels eines Federelements in der Ausgangsstellung federvorgespannt gehalten ist. Diese Maßnahme stellt sicher, dass das Stellglied dann, wenn der Zylinder drucklos geschaltet ist in seiner Ausgangsstellung verharrt bzw. in diese zurückkehrt. Es versteht sich von selbst, dass z. B. durch die Verwendung eines doppelt wirkenden Zylinders auf die Federvorspannung verzichtet werden kann.In this case, it can be provided in particular that the actuator is movable out of its initial position into the disassembly position, and that the steep member is held spring-biased by a spring element in the starting position. This measure ensures that the actuator, when the cylinder is depressurized, remains in its initial position or returns to it. It goes without saying that z. B. can be dispensed by the use of a double-acting cylinder on the spring preload.
Um eine einfache und zuverlässige Bedienung des Werkzeugs auch an schwer zugänglichen Orten zu erreichen, kann es vorgesehen sein, dass das Basisteil mittelbar oder unmittelbar mittels eines Anschlussteils an ein Griffteil angekoppelt ist, und dass das Griffteil mittels einer Schwenklagerung gegenüber dem Basisteil verschwenkt ist. Gemäß einer bevorzugten Ausgestaltungsvariante der Erfindung kann es vorgesehen sein, dass der Austreibdorn an einen Hebelarm angeschlossen ist, der eine Kopplung für die schwenkbare Anbindung einer Kolbenstange aufweist, und dass der Hebel im Abstand zu der Kopplung schwenkbar gelagert ist.In order to achieve a simple and reliable operation of the tool even in hard to reach places, it may be provided that the base part is indirectly or directly coupled by means of a connection part to a handle part, and that the handle part is pivoted by means of a pivot bearing relative to the base part. According to a preferred embodiment variant of the invention, it can be provided that the Austreibdorn is connected to a lever arm which has a coupling for the pivotable connection of a piston rod, and that the lever is pivotally mounted at a distance from the coupling.
Die Erfindung wird im Folgenden anhand mehrerer in den Zeichnungen dargestellten Ausführungsbeispielen näher erläutert. Es zeigen:
- Figur 1:
- in Seitenansicht und im Teilschnitt einen Basisträger mit einem Meißelhalter, dem eine Werkzeug zugeordnet ist in einer ersten Betriebstellung;
- Figur 2:
- die Darstellung gemäß
Figur 1 in einer zweiten Betriebstellung; - Figur 3:
- die Darstellung gemäß
Figur 1 in einer dritten Betriebstellung; - Figur 4:
- in perspektivischer Darstellung ein Adapter des in
Figur 1 gezeigten Werkzeugs; - Figur 5:
- in Seitenansicht und im Teilschnitt den Basisträger und den Meißelhalter gemäß
Figur 1 , wobei dem Meißelhalter eine weitere Ausgestaltungsvariante eines Werkzeuges zugeordnet ist; - Figur 6:
- in Seitenansicht und im Teilschnitt den Basisträger und den Meißelhalter gemäß
Figur 1 , wobei dem Meißelhalter eine dritte Ausgestaltungsvariante eines Werkzeuges zugeordnet ist; - Figur 7
- in Seitenansicht und im Teilschnitt den Basisträger und den Meißelhalter gemäß
Figur 1 , wobei dem Meißelhalter eine vierte Ausgestaltungsvariante eines Werkzeuges zugeordnet ist und - Figur 8
- in Seitenansicht und im Teilschnitt ein Fräswalzenrohr mit einem daran befestigten Meißelhalter, wobei dem Meißelhalter eine fünfte Ausführungsvariante eines Werkzeuges zugeordnet ist.
- FIG. 1:
- in side view and in partial section a base support with a bit holder, which is associated with a tool in a first operating position;
- FIG. 2:
- the representation according to
FIG. 1 in a second operating position; - FIG. 3:
- the representation according to
FIG. 1 in a third operating position; - FIG. 4:
- in perspective an adapter of in
FIG. 1 shown tool; - FIG. 5:
- in side view and in partial section the base support and the chisel holder according to
FIG. 1 wherein the bit holder is associated with a further embodiment variant of a tool; - FIG. 6:
- in side view and in partial section the base support and the chisel holder according to
FIG. 1 wherein the chisel holder is associated with a third embodiment variant of a tool; - FIG. 7
- in side view and in partial section the base support and the chisel holder according to
FIG. 1 wherein the bit holder is associated with a fourth embodiment variant of a tool and - FIG. 8
- in side view and in partial section a Fräswalzenrohr with a chisel holder attached thereto, wherein the chisel holder is associated with a fifth embodiment of a tool.
Die
Sie können an Gegen-Kuppelstücke von Schläuchen angeschlossen werden. Die Schläuche können dabei beispielsweise von einem Hydrauliksystem einer Straßenfräsmaschine oder eines Surface-Miners abgehen. Die im Griff 12 integrierten Leitungen sind zu dem Zylinder 13 geführt. In dem Zylinder 13 ist wieder ein Kolben linear verstellbar untergebracht. Die Verstellbewegung des Kolbens kann mittels eines Ventils, der über einen Auslöser 12.1 am Griff 12 steuerbar ist geregelt werden. An den Zylinder 13 kann der in der
Diese Lageraufnahme 63 steht in Flucht mit entsprechenden Bohrungen in den Seitenwänden 20.4. Durch die fluchtenden Bohrungen und die Lageraufnahme 63 kann ein Lagerbolzen 20.6 hindurch geschoben und mittels Sicherungsringen gesichert werden, wie dies die
Dabei kommt die Kolbenstange 14 mit ihrer Lageraufnahme 15 an der Kupplung 62 zum liegen. Der Hebelarm 64 weist im Bereich der Kupplung 62 zwei zueinander fluchtende Bohrungen auf, die auf die Lageraufnahme 15 in der Kolbenstange 15 ausgerichtet werden können.In this case, the
Hierzu wird die Kolbenstange 14 mit ihrem Bund 16 gegen das, aus der topfförmigen Aufnahme herausragende Federende gestellt. Anschließend kann durch einen Druck auf den Bund 16 das Federelement 20.11 komprimiert werden, bis die Lageraufnahme 15 mit den Bohrungen der Kupplung 62 fluchtet. Durch die fluchtenden Bohrungen und die Lageraufnahme 15 kann ein Gelenkbolzen hindurch geschoben werden. Wie die
Der Hebelarm 64 kann mit seinen Bohrungen auf die Bohrungen in der Kupplung 62 ausgerichtet werden. Dann lässt sich der Gelenkbolzen durch die Durchbrüche 20.5 in die Bohrungen des Hebelarms 64 und durch die Lageraufnahme 15 hindurch schieben. Damit lässt sich eine einfache An- beziehungsweise Abkoppelung der Kolbenstange 14 durchführen. Im angekoppelten Zustand ist die Kolbenstange 14 in der in
Mittels des Anschlussteils 20.10 kann der Adapter 20 mit dem Ansatzgehäuse verbunden werden. Dabei ist zwischen dem Anschlussteil 20.10 und dem Ansatzgehäuse eine Drehlagerung gebildet, so dass das Ansatzgehäuse gegenüber dem Basisteil 20.1 verdreht werden kann. Im montierten Zustand liegt die Kolbenstange 14 mit ihrem Bund 16 an dem im Zylinder 13 geführten Kolben an. Dabei ist der Kolben im Zylinder 13 in seiner, die Ausschiebposition bestimmenden Endlage angeordnet.By means of the connecting part 20.10, the
Wie die
Diese Anschläge 20.8 und 20.9 dienen zur Begrenzung der Verstellbewegung des Stellglieds 60. Hierzu weist das Stellglied 60 entsprechende Gegenflächen auf, die mit den Anschlägen 20.8 und 20.9 in Anlage gebracht werden können. In der
Wie aus der
Das vorstehend beschriebene Werkzeug 10 dient zur Demontage eines Meißels 50, der in einem Meißelhalter 40 aufgenommen ist. Der Meißelhalter 40 ist austauschbar in einem Basisträger 30 gehalten.The above-described
Der Basisträger 30 weist hierzu eine Steckaufnahme auf, die einen Steckansatz des Meißelhalters 40 aufnimmt. Mit seiner Klemmschraube 32 kann der Meißelhalter 40 an dem Basisträger 30 fixiert werden. Der Basisträger 30 besitzt eine konkave Stützfläche 31. Mit dieser kann er auf die Oberfläche eines Fräswalzenrohrs aufgesetzt und daran festgeschweißt werden. Der Meißelhalter 40 besitzt einen Ansatz 41, in den als Bohrung eine Meißelaufnahme 43 eingearbeitet ist. Die Meißelaufnahme 43 ist rückseitig mittels einer Ausnehmung 42 zugänglich. Der Meißel 50 ist vorliegend als Rundschaftmeißel ausgebildet. Er weist einen Meißelkopf auf, an den ein Meißelschaft 51 einteilig angeformt ist. Auf den Meißelschaft 51 ist eine Spannhülse aufgezogen. Die Spannhülse ist auf dem Meißelschaft 51 axial unverschiebbar, jedoch in Umfangsrichtung frei drehbar gehalten. Wie die
Im Betriebseinsatz kann der Meißel 50 mit seinem Meißelkopf auf der Verschleißschutzscheibe 54 rotieren. Dabei dreht sich auch der Meißelschaft 51 in der Spannhülse. Der Meißelkopf des Meißels 50 trägt in üblicher Weise eine Meißelspitze 52, beispielsweise bestehend aus Hartmetall.In operation, the
Wenn der Meißel 50 seinen Verschleißzustand erreicht hat, muss er demontiert werden. Dabei kommt das in den Figuren beschriebene Werkzeug 10 zum Einsatz. Das Werkzeug 10 wird dabei auf den Meißelhalter 40 aufgesetzt, wobei das Abdrückteil 20.13 mit seinem Stützabschnitt 20.14 auf der Vorderseite der Verschleißschutzscheibe 54 anliegt. Das Andrückteil 20.13 kann selbstverständlich auch mittelbar oder unmittelbar an einer geeigneten, beliebigen Stelle des Meißelhalters 40 abgestützt sein.When the
Dabei sollte ein Formschluss in Montagerichtung des Meißels zwischen dem Abdrückteil 20.13 und dem Meißelhalter 40 hergestellt werden. Das Basisteil 20.1 weist weiterhin eine Anschlagfläche 20.7 auf, mit der sich das Basisteil 20.1 auf der Oberfläche des Meißelhalters 40 abstützt. Mittels der Anschlagfläche 20.7 und dem Stützabschnitt 20.14 kann eine definierte Zuordnung des Werkzeugs 10 zu dem Meißelhalter 40 bewirkt werden. Beim Ansetzen des Werkzeugs 10 an den Meißelhalter 40 taucht auch der Austreibdorn 65 durch die Ausnehmung 42 hindurch. Dabei ist das freie Ende des Austreibdorns 65 gegenüberliegend des freien Endes des Meißelschaftes 51 angeordnet. Das freie Ende des Meißelschaftes 51 bildet eine Stützfläche 53. Wenn das Werkzeug 10 in die in
Mit der Betätigung des Auslösers 12.1 wird der Elektromotor im Ansatzgehäuse aktiviert. Dieser fördert Hydraulikflüssigkeit in den Zylinder 13, wodurch der Kolben im Zylinder 13 verschoben wird. Da der Kolben mittelbar oder unmittelbar an dem Bund 16 der Kolbenstange 14 anliegt, wird auch diese in die in
Mit der Verstellung der Kolbenstange 14 wird das Stellglied 60 um seine Lageraufnahme 63 verschwenkt. Dabei taucht dann das Stellglied 60 mit seinem Austreibdorn 65 in die Meißelaufnahme 43 derart ein, dass das freie Ende des Austreibdorns 65 mit der Stützfläche 53 am Meißelschaft 51 in Kontakt kommt. Mit der Verstellung des Stellglieds 60 wird der Meißel 50 aus der Meißelaufnahme 43 herausgeschoben. Dabei hält der Stützabschnitt 20.14 die Verschleißschutzscheibe 54 in Position. Demnach schiebt sich die Spannhülse in die zylindrische Bohrung der Verschleißschutzscheibe 54 ein. Die Spannhülse wird dabei radial nach innen komprimiert, wodurch ihre Spannwirkung teilweise kompensiert wird. Dadurch wird eine geringere Austreibkraft erforderlich. Die Stellbewegung des Stellglieds 60 ist mit dem Anschlag 20.9 begrenzt.With the adjustment of the
In dieser Endlagenstellung schaltet auch ein Schalter die Stromzufuhr zum Elektromotor im Ansatzgehäuse ab. Diese Betriebstellung ist in der
Dann kann das Federelement 20.11 seine Vorspannung abbauen, wobei das Stellglied 60 entgegen dem Uhrzeigersinn in seine, in
In den
Die Werkzeugausführung gemäß
Dem Austreibdorn 65 abgekehrt ist der Hebel 61 über ein Schwenklager (Lagerbolzen 20.6) an die Kolbenstange 14 angeschlossen. Dieser Anschlussbereich entspricht dem Anschlussbereich der Kolbenstange 14 an das Stellglied 60 gemäß
Der zweite Hebel 65.2 ist an seinem, dem Austreibdorn 65 abgewandten Ende über eine Schwenklagerung 65.3 an die Seitenwände 20.4 angekoppelt. Die Schwenkachsen stehen wieder senkrecht zur Bildebene. Die
Nach Erreichen der Ausschubstellung drückt das Federelement 20.11 das Stellglied 60 wieder in die in
Die
Die Gliederkette wird in dem Rohr 66.2 verschoben, wobei das Rohr 66.2 ein Ausknicken der Gliederkette verhindert. Der Austreibdorn 65 stützt sich an der Stützfläche 53 des Meißels 50 ab und schiebt ihn aus der Meißelaufnahme 43 aus.The link chain is moved in the tube 66.2, wherein the tube 66.2 prevents buckling of the link chain. The
Wenn die Gliederkette in den Bereich der Meißelaufnahme 43 gelangt, verhindert diese ein Ausknicken. Nach Erreichen der Endstellung stellt das Federelement 20.11 das Stellglied 60 wieder in seine in
Bei dem Werkzeug gemäß
In der
Das Stellglied 60 ist im Adapter 20 gehalten, wobei die Lageraufnahme 63 die Schwenkachse bildet. Das Stellglied 60 trägt den Austreibdorn 65, der einteilig und exzentrisch zur Lageraufnahme 63 angeformt ist.The
Das Werkzeug 10 kann wieder mit dem Austreibdorn 65 durch die Ausnehmung 42 in die Meißelaufnahme 43 eingesetzt werden, so dass der Austreibdorn 65 der Stützfläche 53 des Meißels 50 gegenüberliegt. Bei einer Betätigung des Auslösers 12.1 am Griff 12 wird der Elektromotor 66.8 aktiviert. Dadurch wird die Abtriebswelle 66.9 in Drehbewegung versetzt. Die Spindel 66.11 dreht über die Verzahnung 66.12 das Stellglied 60 im Uhrzeigersinn. Über die Beabstandung der Verzahnung 66.12 zu der Schwenklagerung 53 wird ein ausreichend großer Hebelarm gebildet. Durch den Einsatz des Spindelgetriebes wird eine hohe Kraftuntersetzung ermöglicht. Der Austreibdorn 65 schiebt mit einer Verdrehung des Stellgliedes 60 den Meißel 50 aus der Meißelaufnahme 43 aus. Nach Erreichen der Ausschiebeendposition steuert der Elektromotor 66.8 um und wechselt die Drehrichtung bis das Stellglied 60 wieder seine in
Es versteht sich, dass das beschriebene Werkzeug 10 auch bei unterschiedlichsten geeigneten Meißelhaltern 40 und Wechselhaltersystemen einsetzbar ist.It is understood that the described
Claims (16)
- Tool (10) for dismantling a chisel (50), in particular from a chisel holder (40), with a base part (20.1) which accommodates an actuating element (60), wherein the actuating element (60) comprises an expulsion mandrel (65), and wherein the actuating element (60) is adjustable, and wherein the actuating element (60) is indirectly or directly coupled to a cylinder-piston system (13, 14) or to an electromotor unit,
characterized in that
the expulsion mandrel (65) moves on a curved path with the adjusting movement of the actuating element (60). - Tool according to claim 1,
characterized in that
the actuating element (60) is mounted to pivot about a pivot bearing on the base part (20.1). - Tool according to claim 1 or 2,
characterized in that
the base part (20.1) has a support section (20.14) for support on the chisel holder (40) or a wear-protection disc (54). - Tool according to claim 3,
characterized in that
the support section (20.14) is arranged on a fork-shaped pressing part (20.13). - Tool according to claim 3 or 4,
characterized in that
the base part (20.1) has an external stop surface (20.7) spaced apart from the support section (20.14) for attachment to the chisel holder (40). - Tool according to one of the claims 1 to 5,
characterized in that
the base part (20.1) has a receptacle (20.2) in which the actuating element (60) is accommodated between two side walls (20.4) that delimit the receptacle (20.2), and
the side walls (20.4) have bearing receptacles (63) on which the actuating member (60) is pivotally mounted. - Tool according to one of the claims 1 to 6,
characterized in that
the travel movement of the actuating element (60) is limited by means of at least one stop (20.9 or 20.8) arranged on the base part (20.1). - Tool according to one of the claims 1 to 7,
characterized in that
the actuating element (60) is movable from an initial position into the dismantling position, and
that the actuating element (60) is spring-biased in the initial position by means of a spring element (20.11). - Tool according to one of the claims 1 to 8,
characterized in that
the base part (20.1) is indirectly or directly coupled to a handle part (12) by means of a connecting part (20.10), and
that the handle part (12) may be pivoted with respect to the base part (20.1) by means of a pivot bearing. - Tool according to one of the claims 1 to 9,
characterized in that
the expulsion mandrel (65) is connected to a lever arm (61), which has a coupling (62) for the pivotable connection of a piston rod (14), and
that the lever arm (61) is pivotally mounted at a distance from the coupling (62). - Tool according to one of the claims 1 to 10,
characterized in that
the expulsion mandrel (65) may be driven by means of a transmission of the actuating element (60). - Tool according to one of the claims 1 to 11,
characterized in that
the expulsion mandrel (65) is driven by means of a planar transmission of the actuating element (60). - Tool according to claim 11,
characterized in that
the planar transmission is a parallelogram four-bar system. - Tool according to one of the claims 1 to 13,
characterized in that
the expulsion mandrel (65) is coupled to a flexible element (66.7), in particular to a chain, and
that the flexible element (66.7) may be guided kink-proof in a guide, in particular in a pipe (66.2). - Tool according to claim 14,
characterized in that
the expulsion mandrel (65) is formed by a chain link of the flexible element (66.7) that is designed as a chain. - Tool according to one of the preceding claims,
characterized in that
the expulsion mandrel 65 may be adjusted by means of a fluid (66.3).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008025071A DE102008025071A1 (en) | 2008-05-26 | 2008-05-26 | Tool for disassembling a chisel |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2128381A2 EP2128381A2 (en) | 2009-12-02 |
EP2128381A3 EP2128381A3 (en) | 2016-04-27 |
EP2128381B1 true EP2128381B1 (en) | 2017-02-22 |
Family
ID=41009992
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09005840.5A Active EP2128381B1 (en) | 2008-05-26 | 2009-04-27 | Tool for removing a cutting tool |
Country Status (7)
Country | Link |
---|---|
US (3) | US8181322B2 (en) |
EP (1) | EP2128381B1 (en) |
JP (1) | JP5124526B2 (en) |
CN (3) | CN101590634B (en) |
AU (1) | AU2009202063B2 (en) |
DE (1) | DE102008025071A1 (en) |
RU (1) | RU2432252C2 (en) |
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2008
- 2008-05-26 DE DE102008025071A patent/DE102008025071A1/en active Pending
-
2009
- 2009-04-27 EP EP09005840.5A patent/EP2128381B1/en active Active
- 2009-05-21 US US12/454,708 patent/US8181322B2/en active Active
- 2009-05-21 JP JP2009122645A patent/JP5124526B2/en active Active
- 2009-05-25 RU RU2009119847/02A patent/RU2432252C2/en active
- 2009-05-26 CN CN2009101437880A patent/CN101590634B/en active Active
- 2009-05-26 CN CN2009201573556U patent/CN201439192U/en not_active Expired - Lifetime
- 2009-05-26 CN CN201310003971.7A patent/CN103072116B/en active Active
- 2009-05-26 AU AU2009202063A patent/AU2009202063B2/en active Active
-
2012
- 2012-04-18 US US13/449,651 patent/US8286316B2/en active Active
- 2012-09-12 US US13/611,735 patent/US9157320B2/en active Active
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Title |
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None * |
Also Published As
Publication number | Publication date |
---|---|
US20130000090A1 (en) | 2013-01-03 |
DE102008025071A1 (en) | 2009-12-03 |
US20120198678A1 (en) | 2012-08-09 |
RU2432252C2 (en) | 2011-10-27 |
AU2009202063A1 (en) | 2009-12-10 |
RU2009119847A (en) | 2010-11-27 |
CN103072116B (en) | 2015-04-15 |
AU2009202063B2 (en) | 2012-07-05 |
JP5124526B2 (en) | 2013-01-23 |
JP2009285827A (en) | 2009-12-10 |
CN201439192U (en) | 2010-04-21 |
CN103072116A (en) | 2013-05-01 |
US8286316B2 (en) | 2012-10-16 |
US8181322B2 (en) | 2012-05-22 |
CN101590634B (en) | 2013-02-27 |
CN101590634A (en) | 2009-12-02 |
EP2128381A3 (en) | 2016-04-27 |
US9157320B2 (en) | 2015-10-13 |
EP2128381A2 (en) | 2009-12-02 |
US20090293249A1 (en) | 2009-12-03 |
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