GB1382022A - Hammer mechanism - Google Patents

Hammer mechanism

Info

Publication number
GB1382022A
GB1382022A GB2918773A GB2918773A GB1382022A GB 1382022 A GB1382022 A GB 1382022A GB 2918773 A GB2918773 A GB 2918773A GB 2918773 A GB2918773 A GB 2918773A GB 1382022 A GB1382022 A GB 1382022A
Authority
GB
United Kingdom
Prior art keywords
piston
tool
hammer piston
hammer
chamber
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
GB2918773A
Inventor
K O Brennstrom
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.)
Atlas Copco AB
Original Assignee
Atlas Copco AB
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 Atlas Copco AB filed Critical Atlas Copco AB
Publication of GB1382022A publication Critical patent/GB1382022A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/0042—Devices for removing chips
    • B23Q11/005—Devices for removing chips by blowing
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B1/00—Percussion drilling
    • E21B1/12—Percussion drilling with a reciprocating impulse member
    • E21B1/24—Percussion drilling with a reciprocating impulse member the impulse member being a piston driven directly by fluid pressure
    • E21B1/30—Percussion drilling with a reciprocating impulse member the impulse member being a piston driven directly by fluid pressure by air, steam or gas pressure
    • E21B1/32—Percussion drilling with a reciprocating impulse member the impulse member being a piston driven directly by fluid pressure by air, steam or gas pressure working with pulses
    • E21B1/34—Percussion drilling with a reciprocating impulse member the impulse member being a piston driven directly by fluid pressure by air, steam or gas pressure working with pulses the impulse member being a piston of an internal-combustion engine
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
    • E21B21/01—Arrangements for handling drilling fluids or cuttings outside the borehole, e.g. mud boxes

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Physics & Mathematics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
  • Earth Drilling (AREA)

Abstract

1382022 Percussive tools ATLAS COPCO AB 20 June 1973 [30 June 1972] 29187/73 Heading B4C A hammer piston 3 of a rock drill is driven towards a tool 5 by a gas cushion in the working chamber 4 of a driving piston 2 and gas is transferred from the chamber to a channel in the tool through a passage device 14 during normal operation, the hammer piston having an extreme position beyond the normal working stroke in which the tool is at rest and the driving piston can still operate so that gas can still be transferred from the working chamber to the channel in the tool. As shown in Fig. 2 the hammer piston is in the impact position being driven to this position by a gas cushion created by a compressor piston driven by an I.C. engine. The return of the hammer piston after impact is ensured by suction in the working chamber 4 by the upward movement of the piston 2. On this return, the hammer piston strikes an impact ring 7 slidable within a chamber 22. When the piston 2 is driven downwards it closes air intake 21 and the hammer piston 3 moves down to open a connection between the working chamber 4 and a non-return valve 16 of the passage device for transferring air via a pipe 14 and passageways to a flushing channel (15) Fig. 1 (not shown) in the tool 5 for flushing purposes. When the rock drill is lifted by means of handles 25, the tool drops to the position shown in Fig. 4 and the hammer piston 3 drops on to a resilient stop 13 to force air from a damping chamber 9 into the flushing channel of the tool. In this lifted position, the piston 2 is unable to suck the hammer piston 3 back.
GB2918773A 1972-06-30 1973-06-20 Hammer mechanism Expired GB1382022A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7208600A SE374045B (en) 1972-06-30 1972-06-30

Publications (1)

Publication Number Publication Date
GB1382022A true GB1382022A (en) 1975-01-29

Family

ID=20274533

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2918773A Expired GB1382022A (en) 1972-06-30 1973-06-20 Hammer mechanism

Country Status (6)

Country Link
JP (1) JPS5649715B2 (en)
CA (1) CA1005291A (en)
DE (1) DE2332908C3 (en)
GB (1) GB1382022A (en)
SE (1) SE374045B (en)
SU (1) SU621322A3 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114341588A (en) * 2019-08-29 2022-04-12 住友重机械福惠能源有限公司 Spring hammer for striking a surface

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE417122B (en) * 1979-05-31 1981-02-23 Alf Sven Johan Wallgren PROCEDURE AND DEVICE FOR GROUND MOUNTAINS AND MOUNTAIN DRILLING WITH A DRILLING MACHINE

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114341588A (en) * 2019-08-29 2022-04-12 住友重机械福惠能源有限公司 Spring hammer for striking a surface
CN114341588B (en) * 2019-08-29 2024-02-13 住友重机械福惠能源有限公司 Spring hammer for striking a surface

Also Published As

Publication number Publication date
DE2332908C3 (en) 1975-07-31
CA1005291A (en) 1977-02-15
DE2332908B2 (en) 1974-12-05
JPS5649715B2 (en) 1981-11-24
SU621322A3 (en) 1978-08-25
JPS4943804A (en) 1974-04-25
SE374045B (en) 1975-02-24
DE2332908A1 (en) 1974-01-17

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees
PCNP Patent ceased through non-payment of renewal fee