FR2288849A1 - Multi-piston hydraulic rock breaker - has pistons fitting in chambers in block sliding outwards from casing - Google Patents

Multi-piston hydraulic rock breaker - has pistons fitting in chambers in block sliding outwards from casing

Info

Publication number
FR2288849A1
FR2288849A1 FR7441030A FR7441030A FR2288849A1 FR 2288849 A1 FR2288849 A1 FR 2288849A1 FR 7441030 A FR7441030 A FR 7441030A FR 7441030 A FR7441030 A FR 7441030A FR 2288849 A1 FR2288849 A1 FR 2288849A1
Authority
FR
France
Prior art keywords
chambers
casing
concrete
pistons
block
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.)
Granted
Application number
FR7441030A
Other languages
French (fr)
Other versions
FR2288849B1 (en
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to FR7441030A priority Critical patent/FR2288849A1/en
Publication of FR2288849A1 publication Critical patent/FR2288849A1/en
Application granted granted Critical
Publication of FR2288849B1 publication Critical patent/FR2288849B1/fr
Granted legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G23/00—Working measures on existing buildings
    • E04G23/08—Wrecking of buildings
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C37/00—Other methods or devices for dislodging with or without loading
    • E21C37/06—Other methods or devices for dislodging with or without loading by making use of hydraulic or pneumatic pressure in a borehole
    • E21C37/08—Devices with pistons, plungers, or the like, pressed locally against the wall of the borehole

Abstract

The hydraulic rock or concrete breaker has an elongated block (14) containing a set of cylindrical chambers for a corresponding set of pistons (17), all housed inside a cylindrical casing (18) which is inserted in a hole of a suitable size made in the concrete and connected to a high pressure hydraulic supply so that the block is forced outwards with a great force to split the concrete. A lip (26) down the edges of the opening in the casing (18) acts to retain and guide the block (14) which has a shoulder (27) down its corresponding edges, so that the pistons are not freed by excess travel. The design prevents loss of hydraulic oil and entry of concrete fragments into the chambers.
FR7441030A 1974-10-24 1974-10-24 Multi-piston hydraulic rock breaker - has pistons fitting in chambers in block sliding outwards from casing Granted FR2288849A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7441030A FR2288849A1 (en) 1974-10-24 1974-10-24 Multi-piston hydraulic rock breaker - has pistons fitting in chambers in block sliding outwards from casing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7441030A FR2288849A1 (en) 1974-10-24 1974-10-24 Multi-piston hydraulic rock breaker - has pistons fitting in chambers in block sliding outwards from casing

Publications (2)

Publication Number Publication Date
FR2288849A1 true FR2288849A1 (en) 1976-05-21
FR2288849B1 FR2288849B1 (en) 1977-04-08

Family

ID=9146081

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7441030A Granted FR2288849A1 (en) 1974-10-24 1974-10-24 Multi-piston hydraulic rock breaker - has pistons fitting in chambers in block sliding outwards from casing

Country Status (1)

Country Link
FR (1) FR2288849A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990008247A1 (en) * 1989-01-18 1990-07-26 Spetsializirovanny Trest Po Remontu Promyshlennykh Zdany I Sooruzheny Predpriyaty Chernoi Metallurgii Tsentralnogo Raiona 'tsentrmetallurgremont' Device for directed splitting of monolith objects
WO2009149595A1 (en) * 2008-06-10 2009-12-17 Fang Ying A cracking method of a rock or concrete and the device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2425468A (en) * 1944-04-13 1947-08-12 Richard T Hair Coal-mining machine
GB940731A (en) * 1958-08-20 1963-10-30 Senih Gurel Improvements in mining and quarrying apparatus

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2425468A (en) * 1944-04-13 1947-08-12 Richard T Hair Coal-mining machine
GB940731A (en) * 1958-08-20 1963-10-30 Senih Gurel Improvements in mining and quarrying apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990008247A1 (en) * 1989-01-18 1990-07-26 Spetsializirovanny Trest Po Remontu Promyshlennykh Zdany I Sooruzheny Predpriyaty Chernoi Metallurgii Tsentralnogo Raiona 'tsentrmetallurgremont' Device for directed splitting of monolith objects
WO2009149595A1 (en) * 2008-06-10 2009-12-17 Fang Ying A cracking method of a rock or concrete and the device

Also Published As

Publication number Publication date
FR2288849B1 (en) 1977-04-08

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Legal Events

Date Code Title Description
ST Notification of lapse