EP2244860B1 - Drucklufthammer - Google Patents

Drucklufthammer Download PDF

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Publication number
EP2244860B1
EP2244860B1 EP09706256A EP09706256A EP2244860B1 EP 2244860 B1 EP2244860 B1 EP 2244860B1 EP 09706256 A EP09706256 A EP 09706256A EP 09706256 A EP09706256 A EP 09706256A EP 2244860 B1 EP2244860 B1 EP 2244860B1
Authority
EP
European Patent Office
Prior art keywords
cylinder
pneumatic hammer
hammer device
casing parts
casing
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.)
Not-in-force
Application number
EP09706256A
Other languages
English (en)
French (fr)
Other versions
EP2244860A2 (de
Inventor
Julien Poncet
Alain Mucig
Patrice Charlat
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.)
Sullair Europe SARL
Original Assignee
Sullair Europe SARL
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 Sullair Europe SARL filed Critical Sullair Europe SARL
Publication of EP2244860A2 publication Critical patent/EP2244860A2/de
Application granted granted Critical
Publication of EP2244860B1 publication Critical patent/EP2244860B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • 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
    • B25D17/04—Handles; Handle mountings
    • 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
    • B25D17/11—Arrangements of noise-damping means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D9/00—Portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously
    • B25D9/04—Portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously of the hammer piston type, i.e. in which the tool bit or anvil is hit by an impulse member
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2222/00—Materials of the tool or the workpiece
    • B25D2222/54—Plastics
    • 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
    • B25D2250/065—Details regarding assembling of the tool
    • 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
    • B25D2250/121—Housing details
    • 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
    • B25D2250/181—Pneumatic tool components
    • 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
    • B25D2250/365—Use of seals

Definitions

  • the invention provides a pneumatic jackhammer device comprising an outer casing, a moving cylinder and piston assembly actuating a piercing element, a compressed air cylinder supply device, an air exhaust device and a device operating control device, characterized in that said outer casing is derived from two complementary parts adapted to fit one with the other to enclose in addition to the cylinder and piston assembly said cylinder supply devices, d air exhaust and control of the operation and in that at least one channel of the supply device and / or the exhaust device is formed in at least one of the housing parts, this channel being formed laterally in the thickness of the housing part, parallel to the cylinder.
  • At least one channel of the supply device and / or the exhaust device may be provided in at least one of the housing parts, thus avoiding the use of external pipes.
  • the housing parts are advantageously two half-shells made of plastic substantially symmetrical to one another with respect to a longitudinal median plane of the hammer device and intended to be mounted tightly to one another and in a leak-tight manner for example by a set of screws arranged at their periphery.
  • the two housing parts can thus be exchanged easily in case of wear or breakage.
  • Their sealed assembly is advantageously provided by a peripheral bead of one of the parts crashing in the clamping in a corresponding groove of the other part, and possibly on a flexible joint.
  • the main operating arm of the handle can further integrate the supply pipe connection at its outer end and a supply valve connected to the control portion (control trigger).
  • the jackhammer device 1 comprises an outer casing 3, a cylinder assembly 5 and movable piston 7 actuating a piercing element 9, a feed device 11 of the cylinder 5 with compressed air, an exhaust system of 13 and an operating control device 15.
  • the outer casing 3 comprises two half-shells 3a assembled to one another along a median longitudinal plane of the device, being tightened against each other by means of screws 17 arranged at their periphery.
  • These half-shells 3a derived from plastic molding, enclose said supply devices 11, exhaust 13 and control 15 of the jackhammer, trapping them rigidly in corresponding housings, respectively 11a, 13a, 15a, formed during of their assembly. They are mounted in a sealed manner to one another by means of a periphery seal 19 constituted by a peripheral bead 19a of a half-shell crashing while being clamped in a complementary groove 19b of the other ( figure 5 ) and leaning possibly on a flexible joint 19c bottom of the groove.
  • a periphery seal 19 constituted by a peripheral bead 19a of a half-shell crashing while being clamped in a complementary groove 19b of the other ( figure 5 ) and leaning possibly on a flexible joint 19c bottom of the groove.
  • the cylinder 5 and piston 7 assembly extends axially substantially along the length of the body 23 of the hammer device.
  • the cylinder 5 conventionally houses, at its rear part, the compressed air distribution section 25, which is connected to the compressed air supply device 11 mounted in the main branch 21a of the handle, and comprises in its part before the gripping portion of the piercing element 9 or ball stagger 27.
  • the latter is formed in an enlarged axial extension before 5 'of the cylinder, comprising conventionally a ring 27a mounted to move on its surface, biased forwardly by a spring 27b and holding the piercing element 9 by means of balls 27c trapped in housings 27d, this ring 27a being able to move back on the thrust of the operator against the spring 27b to release the piercing element 9 .
  • the piston 7 is hollow, being slidably mounted in the cylinder 5, this piston being intended to be pushed brutally towards the piercing element 9, under the pressure of the compressed air in the cylinder 5 and on its hollow head 7a, for shock him and allow the stitching effect of the hammer device.
  • the feeding device 11 of the cylinder comprises a supply valve 11b disposed in the extension of the main branch 21a of the handle, itself connected to a supply pipe 11c of compressed air at about 2 bars at its outer end .
  • This valve 11b is connected to the trigger 15b by a control rod 15c. The latter, closed, excluding actuation of the trigger, opens a supply channel 11d of compressed air to the dispensing portion 25 under the actuation of the control trigger 15b.
  • the dispensing portion 25 is conventional and comprises a pad 25a mounted to move back and forth on its seat 25b and alternately distributing the compressed air in the upper chamber 5a of the cylinder to push the piston 7 to the piercing element 9 or, conversely, feeding the lower part 5b of the cylinder by control channels 11th of the piston (visible at figures 2 and 4 ) to push the latter towards the upper part 5a of the cylinder to (the opposite of the piercing element).
  • the relief channels 11e mentioned above are two in number (one to several and of variable section depending on the space available in the housing) each formed laterally in the thickness of the half-shells 3a, parallel to the cylinder 5 and the lower level thereof. latest. These channels 11e are connected to the distribution portion 25 at its rear end and to the cylinder through holes 5c opening at its lower part 5b.
  • the exhaust device comprises a main part 13 housed in the front branch 21b of the handle, which is in the form of baffles for channeling the compressed air connected by holes 5d to the cylinder 5 and open at the end of this branch .
  • baffles extend longitudinally in the volume of the handle branch 21b. They allow the evacuation of compressed air at the outer end of the handle without inconvenience to the operator.
  • Another part of the exhaust device 13 ' is disposed in the front end portion of the half-shells 3a, opposite the handle 21. This part comprises small baffles connected to the lower part 5b of the cylinder by means of through holes 5e and is connected to the end of the half-shells 3a by holes 13'a opening outwards towards the piercing element 9.
  • an internal shaping of the half-shells 3a can be made near the dispensing portion 25 and the control trigger 15b, in a small space 28 around the cylinder 5 and lead the residual leak air (unavoidable) at the main exhaust part 13.
  • the compressed air arrives from the supply valve 11b open (according arrow), trigger 15b actuated, to the dispensing portion 25.
  • the compressed air is conveyed either in the cylinder chamber upper 5a to push the piston 7 towards the piercing element 9 with a striking effect, or it is driven in the opposite direction, at the end of the distribution part 25, to reach the two lower channels 11e at the lower level 5b of the cylinder and allow the recovery of the piston 7 for a new typing, according to a conventional operation of hammer piercing compressed air.
  • the piston 7 is high in the cylinder 5 (near the dispensing part 25), the pellet 25a being applied on its seat 25b to the left and closing the relief channels 11e, the compressed air arrives then directly into the upper cylinder chamber 5a and then suddenly pushes the piston 7, which is caused to pass through the exhaust holes 5d of the main exhaust part 13.
  • the pressure in the upper chamber 5a falls at the level of the atmospheric or near thrust, while the air of the upper chamber is evacuated by the main exhaust part 13.
  • the air cushion compressed by the arrival of the piston 7 between the piercing element 9 and the piston 7 is discharged by the front exhaust part 13 'to the piercing element 9, which prevents the piston being braked by this air cushion, in its stroke towards the piercing element 9.
  • the pellet 25a is then moved to its opposite position on its seat 25b, closing the compressed air inlet in the cylinder upper chamber 5a and opening the access to the relief channels 11e.
  • the compressed air then reaches the lower level 5b of the cylinder and raises the piston 7 to the upper level 5a of the cylinder for a new typing cycle.
  • low pressure compressed air has been used, but it is possible to supply the device with compressed air at high pressure (for example 7 bars) by adapting the sections of the feed, distribution, relief and exhaust.
  • the invention thus provides a simple jackhammer device, adaptable to a small size, lightweight and economical.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Earth Drilling (AREA)

Claims (14)

  1. Drucklufthammer (1), umfassend ein Außengehäuse (3), eine bewegliche Kolben-Zylinder-Anordnung (5, 7), die ein Meißelelement (9) antreibt, eine Druckluft-Zuführeinrichtung (11) des Zylinders (5), eine Luftauslasseinrichtung (13) und eine Funktionssteuereinrichtung (15), wobei das Außengehäuse (3) aus zwei komplementären Teilen (3a) gebildet ist, die miteinander vereinigbar sind, um außerdem die Kolben-Zylinder-Anordnung (5, 7), die Zuführeinrichtung (11) des Zylinders, die Luftauslasseinrichtung (13) und die Funktionssteuerung (15) aufzunehmen, dadurch gekennzeichnet, dass mindestens ein Kanal (11e) der Zuführeinrichtung (11) und/oder der Auslasseinrichtung (13) in mindestens einem der Gehäuseteile (3a) ausgebildet ist, wobei dieser Kanal parallel zu dem Zylinder (5) seitlich in der Dicke des Gehäuseteils (3a) ausgebildet ist.
  2. Drucklufthammer (1) nach Anspruch 1, dadurch gekennzeichnet, dass die eingeschlossene Zuführeinrichtung (11), die Auslasseinrichtung (13) und die Steuereinrichtung (15) starr zwischen den genannten Gehäusetellen (3a) eingefasst sind, die ihrerseits eng nebeneinander wasserdicht angeordnet sind.
  3. Drucklufthammer (1) nach einem der Ansprüche 1 bis 2, dadurch gekennzeichnet, dass die Gehäuseteile (3a) derart geformt sind, dass sie in ihrer Gehäusung die eingeschlossenen Einrichtungen (11, 13, 15) aufnehmen, welche dadurch sandwichartig zwischen den beiden Gehäusetellen (3a) eingefasst sind.
  4. Drucklufthammer (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Gehäuseteile mindestens eine Materialschicht aufweisen, die ausgebildet ist zum Dämpfen von Vibrationen und des Betriebsgeräusches der Kolben-Zylinder-Anordnung (5, 7).
  5. Drucklufthammer (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Gehäuseteile (3a) Synthetikwerkstoff-Gussteile, beispielsweise Kunststoffgussteile sind.
  6. Drucklufthammer (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Gehäuseteile (3a) ausgebildet sind zur Schaffung eines Kleingeräts geringen Gewichts für die Endbearbeitung oder seltenen Gebrauch.
  7. Drucklufthammer (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Gehäuseteile (3a) zwei Halbschalen (3a) aus Kunststoff sind.
  8. Drucklufthammer (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der wasserdichte Zusammenbau der Gehäuseteile (3a) gewährleistet ist durch eine Umfangs-Dichtschnur (19a) eines der Teile, die sich eng in eine entsprechende Kehle (19b) des anderen Teils und ggf. auf eine weiche Verbindung (19c) drängt.
  9. Drucklufthammer (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Gehäuseteile (3a) mit mindestens einem Handgriff (21) des Drucklufthammers ausgebildet sind, der die Funktionssteuereinrichtung (15) (Betätigungshebel 15b) aufnimmt.
  10. Drucklufthammer (1) nach Anspruch 9, dadurch gekennzeichnet, dass der Handgriff (21) gegenüber der Zylinderachse versetzt und in Form eines D ausgebildet ist, von dem ein vorderer Zweig (21B) verschieden von dem hinteren Hauptzweig (21a) die Bedienerhand schützt.
  11. Drucklufthammer (1) nach Anspruch 10, dadurch gekennzeichnet, dass der vordere Zwelg (216) des Griffs zumindest einen Teil (13) der Luftauslasseinrichtung für die aus dem Zylinder strömende Luft aufnimmt, beispielsweise am äußeren Ende des Griffs (21), ohne mit der Hand der Bedienungsperson zu kollidieren.
  12. Drucklufthammer nach einem der Ansprüche 10 und 11, dadurch gekennzeichnet, dass der Hauptzweig (21a) des Bedienungshandgriffs (21) eine Zuführ-Rohrkupplung (11c) an seinem äußeren Ende ebenso aufnimmt wie ein Zuführventil (11b), welches an die Steuereinrichtung (15) angeschlossen ist.
  13. Drucklufthammer (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der vordere Endteil der Gehäuseteile (3a) außerdem mindestens einen weiteren Luftauslass (13') aufnimmt, der in Richtung des Meißelelements (9) mündet, also ohne Störung bei der Handhabung des Gehäuses (3).
  14. Drucklufthammer (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass in den Gehäuseteilen (3a) eine Innenausformung (28) vorgesehen ist, um möglicherweise entweichende Luft aus den umschlossenen Einrichtungen (11, 13, 15) zu sammeln und in die Luftauslasseinrichtung (13) zu leiten.
EP09706256A 2008-01-31 2009-01-30 Drucklufthammer Not-in-force EP2244860B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0800528A FR2927010B1 (fr) 2008-01-31 2008-01-31 Dispositif de marteau piqueur a air comprime
PCT/FR2009/050136 WO2009095623A2 (fr) 2008-01-31 2009-01-30 Dispositif de marteau piqueur a air comprime

Publications (2)

Publication Number Publication Date
EP2244860A2 EP2244860A2 (de) 2010-11-03
EP2244860B1 true EP2244860B1 (de) 2012-07-04

Family

ID=39720168

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09706256A Not-in-force EP2244860B1 (de) 2008-01-31 2009-01-30 Drucklufthammer

Country Status (5)

Country Link
US (1) US8540034B2 (de)
EP (1) EP2244860B1 (de)
ES (1) ES2396367T3 (de)
FR (1) FR2927010B1 (de)
WO (1) WO2009095623A2 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2927010B1 (fr) 2008-01-31 2010-06-11 Sullair Europ Dispositif de marteau piqueur a air comprime
CN104903038B (zh) * 2012-08-02 2018-12-25 英格索尔-兰德公司 流体驱动马达的可变速度控制
TWI696526B (zh) * 2016-04-12 2020-06-21 鑽全實業股份有限公司 可換向排氣之氣動工具

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR689169A (fr) * 1930-01-31 1930-09-03 Meudon Forges Atel Perfectionnements aux marteaux piqueurs à air comprimé
US3332504A (en) * 1964-05-18 1967-07-25 James V Lowery Impact tool
US3715705A (en) * 1971-03-29 1973-02-06 Thomas & Betts Corp Multicompartment connector
US3727700A (en) * 1971-04-19 1973-04-17 Chicago Pneumatic Tool Co Pneumatically percussive tool having a vibration free handle
US4071094A (en) * 1973-06-21 1978-01-31 Viktor Evdokimovich Kilin Portable pneumatic percussive tool
DE2820842A1 (de) * 1978-05-12 1979-11-22 Sig Schweiz Industrieges Pneumatisch betaetigtes schlaggeraet
US4189917A (en) * 1978-09-18 1980-02-26 Kent Air Tool Company Air hammer and muffler combination
US4327807A (en) * 1978-09-19 1982-05-04 Maco-Meudon Percussion tool casing
EP0015700B1 (de) * 1979-02-28 1982-07-28 CompAir Construction and Mining Limited Pressluftvorrichtung mit hin- und hergehendem Kolben
FR2487241A1 (fr) * 1980-07-25 1982-01-29 Maco Meudon Sa Dispositif anti-givre pour outils pneumatiques
FR2554752B1 (fr) * 1983-11-10 1986-12-26 Charbonnages De France Carter insonorisant pour marteau pneumatique de foration
FR2581337A1 (fr) * 1985-05-02 1986-11-07 Sorelem Perfectionnements aux brise-beton
US5419404A (en) * 1990-05-23 1995-05-30 Bretec Oy Hydraulic impact hammer
US5524715A (en) * 1994-07-29 1996-06-11 Ingersoll-Rand Company Throttle lever system for a fluid-activated, percussive paving breaker
WO2000076731A1 (en) * 1999-06-10 2000-12-21 Macdonald Air Tools Limited Pneumatic tool
FR2808719B1 (fr) * 2000-05-15 2002-09-20 Sullair Europ Systeme de prehension d'un appareil de percussion notamment
FR2927010B1 (fr) 2008-01-31 2010-06-11 Sullair Europ Dispositif de marteau piqueur a air comprime

Also Published As

Publication number Publication date
FR2927010B1 (fr) 2010-06-11
WO2009095623A3 (fr) 2009-10-08
US8540034B2 (en) 2013-09-24
FR2927010A1 (fr) 2009-08-07
US20110155406A1 (en) 2011-06-30
ES2396367T3 (es) 2013-02-21
EP2244860A2 (de) 2010-11-03
WO2009095623A2 (fr) 2009-08-06

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