DE710249C - Internal combustion tool - Google Patents

Internal combustion tool

Info

Publication number
DE710249C
DE710249C DEK158511D DEK0158511D DE710249C DE 710249 C DE710249 C DE 710249C DE K158511 D DEK158511 D DE K158511D DE K0158511 D DEK0158511 D DE K0158511D DE 710249 C DE710249 C DE 710249C
Authority
DE
Germany
Prior art keywords
internal combustion
compressed air
piston
slide
bore
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.)
Expired
Application number
DEK158511D
Other languages
German (de)
Inventor
Hermann Reuter
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.)
Knorr Bremse AG
Original Assignee
Knorr Bremse AG
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 Knorr Bremse AG filed Critical Knorr Bremse AG
Priority to DEK158511D priority Critical patent/DE710249C/en
Priority to FR873790D priority patent/FR873790A/en
Application granted granted Critical
Publication of DE710249C publication Critical patent/DE710249C/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25DPERCUSSIVE TOOLS
    • B25D9/00Portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously
    • B25D9/06Means for driving the impulse member
    • B25D9/10Means for driving the impulse member comprising a built-in internal-combustion engine

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Portable Nailing Machines And Staplers (AREA)

Description

Brennkraftwerkzeug Die Erfindung bezieht sich auf ein Brennkraftwerkzeug jener bekannten Art, bei der ein in einem Arbeitszylinder frei beweglicher Kolben seinen Arbeitshub durch die Explosion eines Brennstoff-Luft-Gemisches, seinen Rückhub dagegen unter der Einwirkung von Druckluft ausführt und betrifft insbesondere eine neuartige Zuführung und Verteilung der Druckluft, durch die einerseits die jederzeitige, unverzügliche Arbeitsaufnahme des Brennkraftwerkzeuges gesichert und andererseits seine Lebensdauer durch vorteilhafte Abkühlungsmaßnahmen erhöht ist.Internal combustion tool The invention relates to an internal combustion tool of the known type in which a piston freely movable in a working cylinder its working stroke through the explosion of a fuel-air mixture, its return stroke however, executes under the action of compressed air and relates in particular to a innovative supply and distribution of compressed air, through which, on the one hand, the constant, immediate start of work of the internal combustion tool secured and on the other hand its service life is increased by advantageous cooling measures.

Die schematische Zeichnung zeigt eine Brennkraftmaschine im Schnitt, wobei das Luftverteilungsgehäuse nebst Schieber besonders groß herausgezeichnet sind. _ In der gezeichneten Ruhestellung sperrt der von Hand zu betätigende Schieber i den Hauptdurchlaß 2 ab. Die bei 3 eintretende Druckluft kann dagegen über die Bohrung d. und die Leitung 5 durch die miteinander verbundenen Bohrungen 6 strömen und den Mantel des Werkzeuges kühlen. Das über die ständig geöffnete Bohrung 7 strömende Druckmittel verteilt sich über drei Wege, über die Leitung 8 und das Brennstoffeinlaßventil 9 in den Arbeitszylinder, über die Leitung io, Bohrung i i, die Eindrehung des Druckluftsteuerventils i2, Bohrung 13 und Leitung 14 in den Raum des Arbeitszylinders unterhalb des Arbeitskolbens 15. Die über die enge Bohrung 7 strömende Luft vermag aber nicht den Kolben 15 anzuheben, sondern entweicht infolge der Lässigkeit der Kolbenführung über die Bohrungen 16 ins Freie und bewirkt lediglich im Verein mit der über die Leitung 8 den oberen Zylinderraum durchströmenden Druckluft eine gute Kühlung der Wände des Arbeitszylinders sowie des Arbeitskolbens 15. Schließlich wird über das Rücksahlagventil 17 der Inhalt des Brennstoffbehälters i8 ständig unter Druck gehalten.The schematic drawing shows an internal combustion engine in section, the air distribution housing and slide shown particularly large are. _ In the rest position shown, the manually operated slide locks i off the main passage 2. The compressed air entering at 3, however, can be via the Bore d. and the line 5 flow through the interconnected bores 6 and cool the casing of the tool. The flowing through the continuously open bore 7 Pressure medium is distributed over three routes, via line 8 and the fuel inlet valve 9 in the working cylinder, via the line io, bore i i, the screwing in of the compressed air control valve i2, bore 13 and line 14 in the space of the working cylinder below the working piston 15. However, the air flowing through the narrow bore 7 cannot lift the piston 15, but escapes via the bores 16 due to the non-conformance of the piston guide into the open and only causes the upper one in conjunction with the line 8 Compressed air flowing through the cylinder chamber ensures good cooling of the walls of the working cylinder as well as the working piston 15. Finally, via the backflow valve 17, the contents of the fuel tank i8 kept constantly under pressure.

Zur Arbeitsaufnahme wird der Schieber i nach oben gedrückt. Die nunmehr zusätzlich über die große Bohrung :2 und die Leitungen io bis 1d. unter den Arbeitskolben 15 strömende Druckluft treibt diesen nach oben. Nach dem Überschleifen der Auslaßöffnungen 16 wird das im oberen Zylinderraum befindliche Brennstoff-Luft-Gemisch (Brennstoff ist inzwischen aus dem Behälter i8 über ein vom Schieber i mitbetätigtes Absperrorgan, die Leitung 8 und Ventil 9 in den Verdichtungsraum.gelangt) verdichtet, während die Ventile 9 und 12 durch den Verdichtungsdruck umgesteuert werden. Der Raum unterhalb des Kolbens 15 wird in der neuen Lage des Ventils i2 über 14., 13, i9 entlüftet, so daß der Kolben 15 nach der erfolgten Zündung ungedämpft seinen Arbeitshub ausführen kann.To start work, the slide i is pushed upwards. The now also about the large bore: 2 and the lines io to 1d. Compressed air flowing under the working piston 15 drives it upwards. After the outlet openings 16 have been looped over, the fuel-air mixture located in the upper cylinder space (fuel has now come from the container i8 via a shut-off device operated by the slide i, the line 8 and valve 9 into the compression chamber) is compressed while the valves 9 and 12 can be reversed by the compression pressure. The space below the piston 15 is vented in the new position of the valve i2 via 14, 13, i9 so that the piston 15 can perform its working stroke undamped after the ignition has taken place.

Claims (1)

PATEN TANSCRUCli: Brennkraftwerkzeug, bei dem der Arbeitshub des Kolbens durch Explosion eines Brennstoff-Luft-Gemisches, der Rückhub des Kolbens durch Druckluft bewirkt werden, dadurch gekennzeichnet, daß im Schieberspiegel des Anlaßschiebers (i) neben der überwachten Durchlaßbohrung (2) für die Druckluft eine vom Schieber (i) unbeeinflußte Bohrung (7) angeordnet ist, über die ständig Druckluft in den Brennstoffvorratsbehälter (i8) sowie Kühlluft in den Arbeitszylinder -cleitet wird. PATEN TANSCRUCli: Internal combustion power tool in which the working stroke of the piston is caused by the explosion of a fuel-air mixture, the return stroke of the piston is caused by compressed air, characterized in that in the slide plate of the starter slide (i) next to the monitored passage bore (2) for the compressed air a bore (7) unaffected by the slide (i) is arranged, via which compressed air is constantly fed into the fuel reservoir (i8) and cooling air into the working cylinder.
DEK158511D 1940-08-24 1940-08-24 Internal combustion tool Expired DE710249C (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DEK158511D DE710249C (en) 1940-08-24 1940-08-24 Internal combustion tool
FR873790D FR873790A (en) 1940-08-24 1941-07-11 Tool controlled by an internal combustion machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEK158511D DE710249C (en) 1940-08-24 1940-08-24 Internal combustion tool

Publications (1)

Publication Number Publication Date
DE710249C true DE710249C (en) 1941-09-08

Family

ID=7253891

Family Applications (1)

Application Number Title Priority Date Filing Date
DEK158511D Expired DE710249C (en) 1940-08-24 1940-08-24 Internal combustion tool

Country Status (2)

Country Link
DE (1) DE710249C (en)
FR (1) FR873790A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE839480C (en) * 1949-05-31 1952-05-19 Gotthilf Schulin Internal combustion impact tool
DE1023429B (en) * 1956-05-19 1958-01-23 Knorr Bremse Gmbh Cooling device on combustion hammer
DE1073975B (en) * 1960-01-21 Schley Her zogenaurach Friedrich Internal combustion hammer

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1073975B (en) * 1960-01-21 Schley Her zogenaurach Friedrich Internal combustion hammer
DE839480C (en) * 1949-05-31 1952-05-19 Gotthilf Schulin Internal combustion impact tool
DE1023429B (en) * 1956-05-19 1958-01-23 Knorr Bremse Gmbh Cooling device on combustion hammer

Also Published As

Publication number Publication date
FR873790A (en) 1942-07-20

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