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WO2019068958A1 - Dispositif de marteau - Google Patents

Dispositif de marteau Download PDF

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Publication number
WO2019068958A1
WO2019068958A1 PCT/FI2018/050683 FI2018050683W WO2019068958A1 WO 2019068958 A1 WO2019068958 A1 WO 2019068958A1 FI 2018050683 W FI2018050683 W FI 2018050683W WO 2019068958 A1 WO2019068958 A1 WO 2019068958A1
Authority
WO
WIPO (PCT)
Prior art keywords
mover
hammer device
permanent magnets
longitudinal direction
stator
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.)
Ceased
Application number
PCT/FI2018/050683
Other languages
English (en)
Inventor
Tuomo Peltola
Jyri PELTOLA
Juha PYRHÖNEN
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.)
Lekatech Oy
Original Assignee
Lekatech Oy
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
Application filed by Lekatech Oy filed Critical Lekatech Oy
Priority to EP18785410.4A priority Critical patent/EP3692217B1/fr
Publication of WO2019068958A1 publication Critical patent/WO2019068958A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/96—Dredgers; Soil-shifting machines mechanically-driven with arrangements for alternate or simultaneous use of different digging elements
    • E02F3/966—Dredgers; Soil-shifting machines mechanically-driven with arrangements for alternate or simultaneous use of different digging elements of hammer-type tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D11/00—Portable percussive tools with electromotor or other motor drive
    • B25D11/06—Means for driving the impulse member
    • B25D11/064—Means for driving the impulse member using an electromagnetic drive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D17/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D17/20—Devices for cleaning or cooling tool or work
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F5/00—Dredgers or soil-shifting machines for special purposes
    • E02F5/30—Auxiliary apparatus, e.g. for thawing, cracking, blowing-up, or other preparatory treatment of the soil
    • E02F5/305—Arrangements for breaking-up hard ground
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
    • B25D2250/141—Magnetic parts used in percussive tools
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F5/00—Dredgers or soil-shifting machines for special purposes
    • E02F5/30—Auxiliary apparatus, e.g. for thawing, cracking, blowing-up, or other preparatory treatment of the soil
    • E02F5/32—Rippers
    • E02F5/323—Percussion-type rippers

Definitions

  • the disclosure relates to a hammer device connectable to an excavator or a to working machine of another kind.
  • a hammer device is used as an attachment to an excavator or another working machine where the intention is to break up for example stone, concrete, or some other material.
  • the hammer device can be attached e.g. to the boom of an excavator, in place of a bucket.
  • the hammer device is often hydraulically driven, allowing it to be connected to the hydraulic system of the excavator or the other working machine.
  • the hydraulic hammer device incorporates a percussion mechanism capable of delivering impacts to a tip member forming part of the hammer device. A first end the tip member forms a tip which transmits the impacts to the ma- terial to be broken up.
  • the percussion mechanism comprises a percussion piston having a reciprocating linear movement and striking and impact face on a second end of the tip member.
  • the percussion piston delivers the impacts, the hammer device is pushed against material to be broken up.
  • the above-mentioned tip penetrates, due to the impacts and the pushing, into the mate- rial to be broken up, and, consequently, breaks up the material.
  • a hydraulic hammer device of the kind described above has its own challenges.
  • One of the challenges encountered with hydraulic hammer devices is their tendency to cause pressure shocks which can be destructive to the hydraulic system of the working machine. These pressure shocks can be smoothed, but to some ex- tent only, by means of a pressure accumulator.
  • Another challenge of a hydraulic hammer device is that it has relatively high power consumption.
  • the hydraulic system contains, in the energy flow direction, a plurality of energy-loss producing elements one after another, causing a reduction of the efficiency of the whole.
  • the energy-loss producing elements include, for instance, an engine that drives a hy- draulic pump, the hydraulic pump, a piping and valve system that produces a flow resistance. Any heating up of the hydraulic oil in the hydraulic hammer device may also pose its own challenges to the hydraulic system of the working machine.
  • the word "geometric" when used as a prefix means a geometric concept that is not necessarily a part of any physical object.
  • the geometric concept can be for example a geometric point, a straight or curved geometric line, a geometric plane, a non-planar geometric surface, a geometric space, or any other geometric entity that is zero, one, two, or three dimensional.
  • a new hammer device connect- able to e.g. an excavator or another working machine.
  • a working machine such as e.g. an excavator, is typically called an off-road machine.
  • an off-road machine is typically called an off-road machine.
  • a hammer device according to the invention comprises:
  • a frame attachable to a working machine e.g. to the boom of an excavator, the frame comprising attachment members for attaching to the working machine so that the frame is nondestructively detachable from the working machine, - an actuator member linearly movably supported by the frame and forming a tip member to transmit impacts to target material, or, capable of accommodating a separate tip member, and a linear electric machine comprising : - a mover for moving the actuator member in a linear manner, and
  • an inherent advantage of the above-described electrically driven hammer device is that it does not cause pressure shocks to a hydraulic system of an excavator or another working machine. Furthermore, the efficiency of electrically implemented energy transmission and processing is typically higher than that of hydraulically implemented energy transmission and processing. Thus, the electrically driven ham- mer device typically has a lower energy consumption than a hydraulic hammer device of equal power. An advantage of the electrically driven hammer device is that its operating electrical energy can be taken, in many instances, from the common electrical grid. The unit price, such as the kilowatt hour price, of the electrical energy provided by the common electrical grid is often lower than the unit price of hydraulic energy generated locally e.g. with a diesel-driven pump.
  • Figure 2 illustrates a linear electric machine of a hammer device according to an exemplifying and non-limiting embodiment
  • Figures 3a, 3b, and 3c illustrate a linear electric machine of a hammer device ac- cording to an exemplifying and non-limiting embodiment
  • Figure 4 illustrates a detail of a linear electric machine of a hammer device according to an exemplifying and non-limiting embodiment
  • Figure 5 illustrates a hammer device according to an exemplifying and non-limiting embodiment. Description of exemplifying and non-limiting embodiments
  • Figure 1 a shows a hammer device 100 according to an exemplifying and non-limiting embodiment.
  • Figure 1 b shows a section view taken along a line A-A shown in Figure 1 a. The section plane is parallel with the yz-plane of a coordinate system 199.
  • Figure 1 c shows a magnification of a part B of Figure 1 b.
  • the hammer device 100 has a frame 101 attachable to a working machine, such as to the boom of an excavator in place of a bucket.
  • the frame 101 has attachment members 102 for attaching to the working machine so that the frame is nondestructively detachable from the working machine.
  • the hammer device 100 comprises an actuator member 1 03 linearly movably supported by the frame 1 01 .
  • the hammer device 1 00 comprises a linear electric machine having a mover 1 04.
  • the mover 1 04 is arranged to move the actuator member 1 03 in a linear manner, parallel to the z-axis of the coordinate system 1 99.
  • the linear electric machine comprises a stator 1 05 attached to the frame 1 01 and comprising windings 1 06 for generating a magnetic force directed to the mover 1 04 in response to electric current supplied to the windings.
  • the windings 1 06 may constitute for example a multi-phase winding, e.g. a two- or three-phase winding.
  • the linear electric machine is a tubular linear electric machine in which the conductor coils of the windings 1 06 are arranged to surround the mover 104.
  • Figures 1 b and 1 c show cross-sectional views of the conductor coils of the windings.
  • the cross-sections of the conductor coils are depicted by black rectangular patterns.
  • two of the conductor coils of the windings are denoted with figure references 1 25 and 1 26.
  • the mover 1 04 can be, for example, substantially rotationally symmetric with respect to a geometric line 1 20 shown in Figure 1 c.
  • the mover 1 04 comprises annular permanent magnets provided one after another in the longitudinal direction of the mover, i.e. in the direction of the z-axis of the coordinate system 1 99, the axial direction of the annular shape of each permanent magnet coinciding with the longitudinal direction of the mover.
  • two of the annular permanent magnets are denoted with figure references 1 07 and 1 08.
  • the magnetizing directions of the permanent magnets coincide with the longitudinal direction of the mover, the magnetizing directions of the successive permanent mag- nets being opposite to each other.
  • the magnetizing directions of the permanent magnets are indicated with arrows in Figure 1 c. Exemplifying magnetic flux lines are depicted with dashed lines.
  • the mover 1 04 has a center rod 1 1 1 and annular ferromagnetic elements provided around it form a ferromagnetic core structure for the mover 1 04.
  • FIG 1 c two of the annular ferromagnetic elements of the mover are denoted with figure references 1 1 2 and 1 1 3.
  • Each annular permanent magnet is situated between two successive annular ferromagnetic elements.
  • the center rod 1 1 1 is made of a non-ferromagnetic material to allow a portion as large possible of the magnetic flux generated by the permanent magnets to travel through the stator 1 05.
  • the center rod can be made of for example austenitic steel or some other non-ferromagnetic and sufficiently strong material.
  • the core structure of the stator 1 05 comprises annular ferromagnetic elements which surround the mover 1 04 and which, being stacked one after another in the longitudinal direction of the mover, form slots for conductor coils of the stator windings.
  • two of the annular ferromagnetic elements are denoted with figure references 1 09 and 1 10.
  • An exemplifying way of implementing the windings of the stator 1 05 is that each slot is provided with only one conductor coil belonging to one phase of the windings. It is also possible to provide each slot, for instance, with two conductor turns belonging either to the same phase of the windings or to two different phases of the windings.
  • the stator 1 05 also comprises a stator frame 1 1 7 having cooling channels for a cooling medium flow.
  • the cooling medium can be for example oil or water.
  • one of the cooling channels is denoted with a figure refer- ence 1 14.
  • the mover 1 04 can be moved in a controlled way for example with a power electronic converter coupled to the windings of the stator. It is often advantageous for the control by the power electronic converter to know the position of the mover 104 with respect to the stator 1 05.
  • the position of the mover can be meas- ured with a mechanical position sensor comprising a sensor rod fixed to the mover.
  • the position of the mover can also be measured in a contactless way, for example with a laser measurement arrangement.
  • the mover and the stator with structures operable as an inductive position sensor.
  • Hammer devices according to different embodiments allow for the use of any applicable position measurement and/or estimation methods known in the prior art. The invention is not limited any specific position measurement and/or position estimation method.
  • Figure 2 illustrates a part of a linear electric machine of a hammer device according to an exemplifying and non-limiting embodiment.
  • the linear electric machine comprises a mover 204 and a stator 205.
  • the mover 204 is movably supported relative to the stator 205, the direction of movement of the mover 204 being parallel to the z-axis of a coordinate system 299.
  • Figure 2 shows a section view in which the section plane is parallel to yz-plane of the coordinate system 299.
  • the stator 205 comprises windings for generating a magnetic force directed to the mover 204 in response to electric current supplied to the windings.
  • the windings constitute a three-phase winding whose phases are denoted with figure references U, V and W.
  • the linear electric machine is a tubular linear electric machine in which the conductor coils of the stator windings are arranged to surround the mover 204.
  • the mover 204 and the electromagnetically active parts of the stator 205 can be, for instance, rotationally symmetric with respect to a geometric line 220 shown in Figure 2.
  • the cross-sections of the conductor coils of the windings of the stator 205 are presented as cross-hatched areas.
  • Figure 2 uses a notation in which the left side of an area representing a cross- section of each conductor coil is provided with a phase-indicating figure reference U, V or W, and with "+” if the direction of electric current in the conductor coil cross- section under consideration is the positive x-direction of the coordinate system 299 when the electric current of this phase U, V or W is positive, or with "-" if the direction of the electric current in the conductor coil cross-section under consideration is the negative x-direction of the coordinate system 299 when the electric current of this phase U, V or W is positive.
  • the stator 205 has annular permanent magnets provided one after another in the longitudinal direction of the mover 204, wherein the axial direction of the annular shape of each permanent magnet coincides with the longitudinal direction of the mover, i.e. is parallel with the z-axis of the coordinate system 299.
  • two of the annular permanent magnets are denoted with figure references 207 and 208.
  • the magnetizing directions of the permanent magnets coincide with the longitudinal direction of the mover 204, the magnetizing directions of the successive permanent magnets being opposite to each other.
  • the magnetizing directions of the permanent magnets are indicated with arrows in Figure 2.
  • An exemplifying magnetic flux line is depicted with a dashed line.
  • the core structure of the stator 205 comprises annular ferromagnetic elements surrounding the mover 204 and forming slots for the conductor coils of the windings.
  • two of the annular ferromagnetic elements are denoted with figure references 209 and 210.
  • the annular ferromagnetic elements and the permanent magnets of the stator are provided in the longitudinal direction of the mover 204 so that there is one of the slots between successive permanent magnets.
  • two conductor coils are provided in each stator slot.
  • conductor coils with designations +V and -W are provided in the slot formed by the ferromagnetic elements 209 and 210.
  • the stator 205 may also comprise a stator frame 217, possibly equipped with cooling channels for a cooling medium flow.
  • the stator frame 217 is advantageously made of a non-ferromagnetic material to allow a portion as large possible of the magnetic flux generated by the permanent magnets to travel through the mover 204.
  • the stator frame 217 can be made of for example aluminum.
  • the mover 204 has a center rod 21 1 and annular ferromagnetic elements provided around the center rod to form a ferromagnetic core structure of the mover.
  • two of the annular ferromagnetic elements of the mover are denoted with figure references 212 and 213.
  • the annular elements of the mover 204 are shaped to form, on the outer surface of the mover, ridges oriented in the circumferential direction of the mover and causing a reluctance variation which enables the stator 205 to generate the magnetic force directed to the mover.
  • Figure 2 only shows a portion of the linear electric machine concerned.
  • the slots of the stator 205 can be 12 in number, for example, and the ridges can be provided on the mover 204 so that there are 13 mover ridges in the area covered by the stator.
  • the mover 204 must have such a length that there is a sufficient number of ridges in the area covered by the stator within the entire range of movement of the mover.
  • FSPMSM Flux switching permanent magnet synchronous machine
  • Figure 3a shows a section view of a linear electric machine of a hammer device according to an exemplifying and non-limiting embodiment.
  • the section plane is parallel with the yz-plane of a coordinate system 399.
  • Figure 3b shows a magnifica- tion of a part B1 of Figure 3a
  • Figure 3c shows a magnification of a part B2 of Figure 3a.
  • the linear electric machine comprises a mover 304 and a stator 305.
  • Figure 3a shows a part of the mover 304 also separately for the sake of clarity.
  • the mover 304 comprises an active part 321 that contains permanent magnets provided one after another in the longitudinal direction of the linear electric machine.
  • the longitudinal direction is parallel with the z-axis of the coordinate system 399.
  • the stator 305 comprises a ferromagnetic core-structure and windings for generating magnetic force acting on the mover 304 in response to supplying electric current to the windings.
  • the ferromagnetic core-structure of the stator is denoted with a figure reference 322 and cross-sections of two conductor coils of the windings are denoted with figure references 335 and 336.
  • the ferromagnetic core-structure 322 constitutes stator slots for the conductor coils of the windings.
  • the windings are arranged to constitute a multi-phase winding, e.g. a three-phase winding, and the windings can be implemented for example so that each stator slot contains only one conductor coil which belongs to one phase of the windings. It is, however, also possible that each stator slot contains for example two conductor coils which can belong to different phases of the windings or to a same phase of the windings.
  • the exemplifying linear electric machine illustrated in Figures 3a-3c comprises first and second support structures 323 and 324 on both sides of the ferromagnetic core- structure of the stator in the longitudinal direction of the linear electric machine.
  • the first and second support structures 323 and 324 are arranged to support the mover 304 to be linearly movable with respect to the stator 305 in the longitudinal direction of the mover.
  • the active part 321 of the mover 304 is longer than the ferromagnetic core-structure of the stator 305 in the longitudinal direction of the mover.
  • some of the permanent magnets of the mover 304 are temporarily inside a frame-portion 325 of the support structure 323.
  • the frame-portion 325 is made of solid metal, e.g. solid steel, to achieve a sufficient mechanical strength.
  • the support structure 323 further comprises a support element 326 arranged to keep the mover 304 a distance away from the solid metal of the frame-portion 325. In Figure 3c, the above-mentioned distance is denoted with D.
  • the support element 326 constitutes a sliding surface 327 that is against the mover 304 and supports the mover in transversal directions, i.e. in directions perpendicular to the longitudinal direction of the linear electric machine.
  • the support element 326 comprises material whose electrical conductivity, S/m, is less than that of the solid metal of the frame-portion 325.
  • the electrical conductivity of the material of the support element 326 can be e.g.
  • the distance D can be e.g. at least 5 mm, at least 10 mm, at least 1 5 mm, at least 20 mm, at least 25 mm, or at least 30 mm.
  • the support element 326 may comprise for example polymer material or some other suitable material having low electrical conductivity and suitable mechanical properties.
  • the polymer material can be e.g. polytetrafluoroethylene, known as Teflon.
  • Teflon polytetrafluoroethylene
  • the support element 326 comprises a coating constituting the sliding surface that is against the mover 304.
  • the coating is denoted with a figure reference 330.
  • the coating improves the wear resistance of the sliding surface of the support element 326.
  • the coating can be for example a layer of chrome. In cases, where the coating is made of electrically conductive material, the coating is advantageously thin to reduce eddy current losses in the coating. In Figure 3c, the thickness of the coating 330 is exaggerated for the sake of clarity.
  • the exemplifying linear electric machine illustrated in Figures 3a-3c is a tubular linear electric machine where the ferromagnetic core-structure of the stator 305 is ar- ranged to surround the mover 304 and the windings of the stator are arranged to surround the mover 304 and conduct electric currents in a circumferential direction.
  • the mover 304 can be, for example but not necessarily, substantially rotationally symmetric with respect to a geometric line 320 shown in Figure 3b.
  • the mover 304 comprises annular ferromagnetic elements that are alter- nately with the permanent magnets in the longitudinal direction of the mover.
  • FIG 3b two of the annular ferromagnetic elements of the mover 304 are denoted with figure references 31 2 and 31 3.
  • the magnetization directions of the permanent magnets of the mover 304 are parallel with the longitudinal direction, and longitudinally neighboring ones of the permanent magnets have magnetization directions opposite to each other.
  • the magnetization directions of the permanent magnets are depicted with arrows.
  • Exemplifying mag- netic flux lines are denoted with curved dashed lines.
  • the mover 304 comprises a center rod 31 1 that mechanically supports the permanent magnets and the annular ferromagnetic elements of the mover 304.
  • the center rod 31 1 is advantageously made of non-ferromagnetic material in order that as much as possible of the magnetic fluxes generated by the permanent magnets of the mover 304 would flow via the stator 305.
  • the center rod 31 1 can be made of for example austenitic steel or some other sufficiently strong non-ferromagnetic material.
  • the ferromagnetic core-structure of the stator 305 comprises annular ferromagnetic elements surrounding the mover 304 and forming slots for the conductor coils of the windings.
  • two of annular ferromagnetic elements of the stator 305 are denoted with figure references 309 and 310.
  • the support element 326 is tubular and arranged to surround an end-portion 328 of the mover 304.
  • An end-portion 329 of the support structure 323 is closed, and the end-portion 328 of the mover 304 is arranged to operate as a piston for compressing gas, e.g. air, when the mover 304 moves towards the closed end-portion 329 of the support structure 323.
  • gas e.g. air
  • the gas in the room limited by the tubular support element 326, the end portion 329 of the support structure 323, and the end-portion 328 of the mover 304 acts as a gas spring that intensifies the movement of the mover 304 in the negative z-direction of the coordinate system 399 and acts against the movement of the mover 304 in the positive z-direction of the coordinate system 399.
  • Figure 4 shows a section view of a part of a linear electric machine of a hammer device according to an exemplifying and non-limiting embodiment.
  • the section plane is parallel with the yz-plane of a coordinate system 499.
  • Figure 4 illustrates a part of a support structure 423 of the linear electric machine and a part of a mover 404 of the linear electric machine.
  • the support structure 423 is arranged to support the mover 404 in the same way as the support structure 323 is arranged to support the mover 304 in the linear electric machine illustrated in Figures 3a-3c.
  • the support structure 423 comprises a support element 426 that comprises material whose electrical conductivity is less than that of solid metal constituting a frame-portion 425 of the support structure 423.
  • the support element 426 comprises ferromagnetic material 431 whose electrical conductivity is less than that the solid metal constituting the frame-portion 425, e.g. at most half of the electrical conductivity of the solid metal.
  • the ferromagnetic material 431 provides low reluctance paths for magnetic fluxes generated by permanent magnets of the mover 404, and thereby the ferromagnetic material 431 reduces magnetic stray fluxes directed to the frame-portion 425 of the support structure 423. Furthermore, the ferromagnetic material 431 reduces the flux variation taking place in the permanent magnets and thereby the ferromagnetic material reduces losses of the permanent magnets.
  • the ferromagnetic material 431 can be for example ferrite or iron powder composite such as e.g. SOMALOY® Soft Magnetic Composite.
  • the support element 426 further comprises a coating 430 on a surface of the ferromagnetic ma- terial and constituting a sliding surface that is against the mover 404.
  • the coating 430 can be for example a layer of chrome.
  • Figure 5 shows a section view of a hammer device 500 according to an exemplifying and non-limiting embodiment.
  • the section plane is parallel with the yz-plane of a coordinate system 599.
  • the hammer device comprises a frame 501 that comprises attachment members 502 for attaching to the working machine, e.g. an excavator, so that the frame 501 is nondestructively detachable from the working machine.
  • the hammer device 500 comprises an actuator member 503 linearly supported to the frame 501 and linearly movable with respect to the frame. In this exemplifying case, an end of the actuator member 503 is shaped to allow a separate tip member to be attached as an extension of the actuator member.
  • the hammer device 500 comprises a linear electric machine according to an embodiment of the invention.
  • a sta- tor 505 of the linear electric machine is attached to the frame 501 , and a mover 504 of the linear electric machine is arranged to move actuator member 503.
  • the linear electric machine can be for example such as illustrated in Figures 3a-3c or such as illustrated in Figure 4.
  • a linear electric machine of a hammer device is a reluctance machine in which no permanent magnets are needed, but, in which all magnetic flux is induced by an electric current, and, in which the magnetic force directed to the mover is generated by reluctance variation based on the design of the mover.
  • the drawbacks of a reluctance machine are a lower power density, i.e. a larger ma- chine is needed to produce the same power, and a lower efficiency because all magnetic flux is induced by an electric current, resulting in higher resistive l 2 R losses in the electric machine, and, in addition, higher losses in the power electronics feeding the electric machine.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Linear Motors (AREA)

Abstract

L'invention concerne un dispositif de marteau (100) qui comprend un cadre (101), un élément d'actionneur (103) mobile de manière linéaire par rapport au cadre, et une machine électrique linéaire pour déplacer l'élément d'actionneur de manière linéaire. Le cadre comprend des éléments de fixation (102) destinés à être fixés à une machine de travail de telle sorte que le cadre peut être détaché de la machine de travail de manière non-destructive. La machine électrique linéaire comprend un dispositif de déplacement (104) pour déplacer l'élément d'actionneur de manière linéaire, et un stator (105) relié au cadre et comprenant des enroulements (106) pour générer une force magnétique dirigée vers le dispositif de déplacement en réponse à un courant électrique fourni aux enroulements.
PCT/FI2018/050683 2017-10-06 2018-09-21 Dispositif de marteau Ceased WO2019068958A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP18785410.4A EP3692217B1 (fr) 2017-10-06 2018-09-21 Dispositif de marteau

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FIU20174230U FI11918U1 (fi) 2017-10-06 2017-10-06 Iskuvasaralaite
FIU20174230 2017-10-06

Publications (1)

Publication Number Publication Date
WO2019068958A1 true WO2019068958A1 (fr) 2019-04-11

Family

ID=61173904

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI2018/050683 Ceased WO2019068958A1 (fr) 2017-10-06 2018-09-21 Dispositif de marteau

Country Status (3)

Country Link
EP (1) EP3692217B1 (fr)
FI (1) FI11918U1 (fr)
WO (1) WO2019068958A1 (fr)

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CN111535103A (zh) * 2020-04-15 2020-08-14 上海蓝彬新材料科技有限公司 一种市政路基施工方法
CN112376380A (zh) * 2020-11-04 2021-02-19 杭州湘豫科技有限公司 一种具有感应结构的路面施工用破碎锤
CN112550764A (zh) * 2020-11-26 2021-03-26 上海航天控制技术研究所 一种异步式三轴姿态控制磁悬浮惯性执行机构
SE2051416A1 (en) * 2020-12-04 2022-06-05 Construction Tools Pc Ab Hammer device with an electrically operated piston drive arrangement
EP4264075A1 (fr) * 2020-12-15 2023-10-25 Lekatech Oy Frein pour mouvement linéaire et dispositif de marteau le comprenant
KR20240166678A (ko) * 2023-05-18 2024-11-26 주식회사 현대에버다임 전기 브레이커
KR102735076B1 (ko) * 2023-09-04 2024-11-27 배기흥 무소음 전기 브레이커
KR20250007918A (ko) * 2023-07-06 2025-01-14 주식회사 현대에버다임 전기 브레이커
WO2025072477A1 (fr) * 2023-09-26 2025-04-03 Clark Equipment Company Dispositif de fixation de disjoncteur électrique

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IT202200019395A1 (it) * 2022-09-22 2024-03-22 Ghedini Ing Fabio & C S A S Martello demolitore per macchina operatrice elettrica
FI20235795A1 (en) * 2023-07-05 2025-01-06 Lekatech Oy Stator core design for a tubular linear electric machine
FI131625B1 (en) * 2023-07-05 2025-08-12 Lekatech Oy Electric impact device and method for controlling it

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US545149A (en) * 1895-08-27 Electromagnetic tool
US3436121A (en) * 1967-05-02 1969-04-01 Wesley B Cunningham Electrically actuated demolition device
JPS5068372U (fr) * 1973-10-23 1975-06-18
JPS5068371U (fr) * 1973-10-23 1975-06-18
JP2008005960A (ja) 2006-06-28 2008-01-17 Platon Japan:Kk 施術用器具
JP2011193641A (ja) 2010-03-15 2011-09-29 Koganei Corp リニアモータおよび往復動ロッドの製造方法
US8497415B2 (en) 2008-09-26 2013-07-30 Goodbuy Corporation S.A. Piano hammer
EP2669463A1 (fr) 2012-05-31 2013-12-04 Sandvik Mining and Construction Oy Appareil de forage de roches et procédé de commande de compresseur
US10202116B2 (en) 2015-11-27 2019-02-12 Komatsu Ltd. Mining machine control system, mining machine, mining machine management system, and mining machine management method
US10293398B2 (en) 2015-10-05 2019-05-21 Langenstein & Schemann Gmbh Forming machine, in particular a forging hammer
RU2727863C1 (ru) 2019-07-09 2020-07-24 Марина Дмитриевна Перова Способ дентальной имплантации в боковых отделах верхней челюсти

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US545149A (en) * 1895-08-27 Electromagnetic tool
US3436121A (en) * 1967-05-02 1969-04-01 Wesley B Cunningham Electrically actuated demolition device
JPS5068372U (fr) * 1973-10-23 1975-06-18
JPS5068371U (fr) * 1973-10-23 1975-06-18
JP2008005960A (ja) 2006-06-28 2008-01-17 Platon Japan:Kk 施術用器具
US8497415B2 (en) 2008-09-26 2013-07-30 Goodbuy Corporation S.A. Piano hammer
JP2011193641A (ja) 2010-03-15 2011-09-29 Koganei Corp リニアモータおよび往復動ロッドの製造方法
EP2669463A1 (fr) 2012-05-31 2013-12-04 Sandvik Mining and Construction Oy Appareil de forage de roches et procédé de commande de compresseur
US10293398B2 (en) 2015-10-05 2019-05-21 Langenstein & Schemann Gmbh Forming machine, in particular a forging hammer
US10202116B2 (en) 2015-11-27 2019-02-12 Komatsu Ltd. Mining machine control system, mining machine, mining machine management system, and mining machine management method
RU2727863C1 (ru) 2019-07-09 2020-07-24 Марина Дмитриевна Перова Способ дентальной имплантации в боковых отделах верхней челюсти

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111535103A (zh) * 2020-04-15 2020-08-14 上海蓝彬新材料科技有限公司 一种市政路基施工方法
CN112376380A (zh) * 2020-11-04 2021-02-19 杭州湘豫科技有限公司 一种具有感应结构的路面施工用破碎锤
CN112550764A (zh) * 2020-11-26 2021-03-26 上海航天控制技术研究所 一种异步式三轴姿态控制磁悬浮惯性执行机构
SE2051416A1 (en) * 2020-12-04 2022-06-05 Construction Tools Pc Ab Hammer device with an electrically operated piston drive arrangement
WO2022119488A1 (fr) 2020-12-04 2022-06-09 Construction Tools Pc Ab Dispositif de marteau
SE544592C2 (en) * 2020-12-04 2022-09-20 Construction Tools Pc Ab Hammer device with an electrically operated piston drive arrangement
EP4264075A1 (fr) * 2020-12-15 2023-10-25 Lekatech Oy Frein pour mouvement linéaire et dispositif de marteau le comprenant
EP4264075B1 (fr) * 2020-12-15 2025-08-13 Lekatech Oy Un dispositif de martelage comprenant un frein pour un mouvement linéaire
KR20240166678A (ko) * 2023-05-18 2024-11-26 주식회사 현대에버다임 전기 브레이커
KR102846878B1 (ko) 2023-05-18 2025-08-20 주식회사 현대에버다임 전기 브레이커
KR20250007918A (ko) * 2023-07-06 2025-01-14 주식회사 현대에버다임 전기 브레이커
KR102857113B1 (ko) 2023-07-06 2025-09-09 주식회사 현대에버다임 전기 브레이커
KR102735076B1 (ko) * 2023-09-04 2024-11-27 배기흥 무소음 전기 브레이커
WO2025072477A1 (fr) * 2023-09-26 2025-04-03 Clark Equipment Company Dispositif de fixation de disjoncteur électrique

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