SE8301571D0 - HYDRAULIC PERCUSSIVE APPARATUS - Google Patents

HYDRAULIC PERCUSSIVE APPARATUS

Info

Publication number
SE8301571D0
SE8301571D0 SE8301571A SE8301571A SE8301571D0 SE 8301571 D0 SE8301571 D0 SE 8301571D0 SE 8301571 A SE8301571 A SE 8301571A SE 8301571 A SE8301571 A SE 8301571A SE 8301571 D0 SE8301571 D0 SE 8301571D0
Authority
SE
Sweden
Prior art keywords
striker
piston
chamber
pressure
pressure chamber
Prior art date
Application number
SE8301571A
Other languages
Swedish (sv)
Other versions
SE8301571L (en
Inventor
L A Reynolds
Original Assignee
Af Hydraulics
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 Af Hydraulics filed Critical Af Hydraulics
Publication of SE8301571D0 publication Critical patent/SE8301571D0/en
Publication of SE8301571L publication Critical patent/SE8301571L/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L25/00—Drive, or adjustment during the operation, or distribution or expansion valves by non-mechanical means
    • F01L25/02—Drive, or adjustment during the operation, or distribution or expansion valves by non-mechanical means by fluid means
    • F01L25/04—Drive, or adjustment during the operation, or distribution or expansion valves by non-mechanical means by fluid means by working-fluid of machine or engine, e.g. free-piston machine
    • F01L25/06—Arrangements with main and auxiliary valves, at least one of them being fluid-driven
    • F01L25/066—Arrangements with main and auxiliary valves, at least one of them being fluid-driven piston or piston-rod being used as auxiliary valve
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
    • F01B11/00—Reciprocating-piston machines or engines without rotary main shaft, e.g. of free-piston type
    • F01B11/04—Engines combined with reciprocatory driven devices, e.g. hammers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03C—POSITIVE-DISPLACEMENT ENGINES DRIVEN BY LIQUIDS
    • F03C1/00—Reciprocating-piston liquid engines
    • F03C1/08—Distributing valve-gear peculiar thereto
    • F03C1/20—Distributing valve-gear peculiar thereto specially adapted for engines generating vibration only

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)

Abstract

Hydraulic percussive apparatus has a body 104 in which a unitary piston/striker 101 with piston portion 102 and striker portion 103 is reciprocable, for impact with a tool T releasably retained in the forward end of the body 104. The body 104 contains a forward pressure chamber 105 and a return pressure chamber 106. The forward pressure chamber 105 is controlled by a valve V which in a cyclic manner alternately connects the chamber 105 to supply pressure P and to exhaust Ex with fluid pressure in this chamber acting on the piston portion 102 to produce forward strokes of the piston/striker 101 so that the striker portion 103 impacts the tool T. The return pressure chamber 106 is connected to the supply pressure P to provide a continuous return force acting on the piston/striker 101. A channel 113 is closed off during normal reciprocation of the piston/striker 101 but in the event of an overstroke of the latter in the forward direction interconnects the two chambers 105 and 106. The resultant hydraulic flow through the channel 113 pressurises the chamber 105 sufficiently to apply a forward fluid pressure force bias to the piston/striker 101.This holds the piston/striker 101 in the forward position so that reciprocation thereof ceases. <IMAGE>
SE8301571A 1982-04-03 1983-03-22 HYDRAULIC SEAT MACHINE SE8301571L (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08209962A GB2117845B (en) 1982-04-03 1982-04-03 Hydraulic percussive apparatus

Publications (2)

Publication Number Publication Date
SE8301571D0 true SE8301571D0 (en) 1983-03-22
SE8301571L SE8301571L (en) 1983-10-04

Family

ID=10529515

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8301571A SE8301571L (en) 1982-04-03 1983-03-22 HYDRAULIC SEAT MACHINE

Country Status (4)

Country Link
DE (1) DE3311842A1 (en)
FR (1) FR2524362A1 (en)
GB (1) GB2117845B (en)
SE (1) SE8301571L (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2575792A1 (en) * 1985-01-09 1986-07-11 Eimco Secoma HYDRAULIC PRESSURE AMPLIFIER

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1531076A (en) * 1967-07-12 1968-06-28 Sonomotive Engineers Ltd Advanced percussion tools and machines
GB1396307A (en) * 1971-05-11 1975-06-04 Af Hydraulics Hydraulic percussive implement
US3930435A (en) * 1973-05-25 1976-01-06 Cooley William C Hydraulically powered actuator
ES464093A1 (en) * 1977-11-12 1978-12-16 Luis Miguel Castejon Castan Fluid arrangement

Also Published As

Publication number Publication date
FR2524362A1 (en) 1983-10-07
DE3311842A1 (en) 1983-10-13
GB2117845A (en) 1983-10-19
GB2117845B (en) 1985-08-29
SE8301571L (en) 1983-10-04

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