JPS57146828A - Oil-pressure drop hammer for driving pile - Google Patents

Oil-pressure drop hammer for driving pile

Info

Publication number
JPS57146828A
JPS57146828A JP3021581A JP3021581A JPS57146828A JP S57146828 A JPS57146828 A JP S57146828A JP 3021581 A JP3021581 A JP 3021581A JP 3021581 A JP3021581 A JP 3021581A JP S57146828 A JPS57146828 A JP S57146828A
Authority
JP
Japan
Prior art keywords
oil
ram
pressure drop
cylinder
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.)
Granted
Application number
JP3021581A
Other languages
Japanese (ja)
Other versions
JPS6118610B2 (en
Inventor
Takashi Takee
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 JP3021581A priority Critical patent/JPS57146828A/en
Publication of JPS57146828A publication Critical patent/JPS57146828A/en
Publication of JPS6118610B2 publication Critical patent/JPS6118610B2/ja
Granted legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
    • E02D7/02—Placing by driving
    • E02D7/06—Power-driven drivers
    • E02D7/08—Drop drivers with free-falling hammer

Abstract

PURPOSE:To prevent the occurrence of vibration in the ground by arbitrarily setting up the driving interval of piles by a method in which the lower part of an anvil is fitted into the medium-confined chamber of an oil-pressure drop hammer for driving pile and the supply of oil to the oil-pressure cylinder of a pulley device for vertically moving ram is controlled by a differential circuit. CONSTITUTION:The lower part of an anvil 5 is inserted into the medium-confined chamber 4 of an oil-pressure drop hammer for driving pile to form a driver 3. A hammer ram 7 is housed in a cylinder 1 provided at the upside of the driver 3, and a ram 7 is vertically moved by an elevator mechanism 10 consisting of a wire rope 11 and pulley devices 12a-12c. A differential circuit 14 with a control valve is connected to the oil-pressure cylinder 13 to operate the elevator mechanism 10, and the oil in one chamber, which is to be discharged during the forward and backward strokes of the piston of the cylinder 13, is supplied to the other chamber. By such a mechanism, the action of the piston is doubled, the ram 7 is raised, and then oil pressure is shut out and the ram 7 is dropped by gravity. Thus, the vibration of the ground is prevented and the amount of man- hour is reduced.
JP3021581A 1981-03-03 1981-03-03 Oil-pressure drop hammer for driving pile Granted JPS57146828A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3021581A JPS57146828A (en) 1981-03-03 1981-03-03 Oil-pressure drop hammer for driving pile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3021581A JPS57146828A (en) 1981-03-03 1981-03-03 Oil-pressure drop hammer for driving pile

Publications (2)

Publication Number Publication Date
JPS57146828A true JPS57146828A (en) 1982-09-10
JPS6118610B2 JPS6118610B2 (en) 1986-05-13

Family

ID=12297495

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3021581A Granted JPS57146828A (en) 1981-03-03 1981-03-03 Oil-pressure drop hammer for driving pile

Country Status (1)

Country Link
JP (1) JPS57146828A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102535465A (en) * 2010-12-23 2012-07-04 上海工程机械厂有限公司 Hydraulic pneumatic composite pile hammer
US8925774B2 (en) 2009-04-24 2015-01-06 Makita Corporation Harness for a handheld power equipment
KR20190008517A (en) * 2015-10-05 2019-01-24 앵거스 피터 롭슨 Reciprocating impact hammer
CN109340214A (en) * 2018-12-17 2019-02-15 广东力源液压机械有限公司 A kind of high-power direction valve oil cylinder of integrated-type and its control method

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8925774B2 (en) 2009-04-24 2015-01-06 Makita Corporation Harness for a handheld power equipment
CN102535465A (en) * 2010-12-23 2012-07-04 上海工程机械厂有限公司 Hydraulic pneumatic composite pile hammer
CN102535465B (en) * 2010-12-23 2016-04-20 上海工程机械厂有限公司 Hydraulic pneumatic composite pile hammer
KR20190008517A (en) * 2015-10-05 2019-01-24 앵거스 피터 롭슨 Reciprocating impact hammer
CN109340214A (en) * 2018-12-17 2019-02-15 广东力源液压机械有限公司 A kind of high-power direction valve oil cylinder of integrated-type and its control method

Also Published As

Publication number Publication date
JPS6118610B2 (en) 1986-05-13

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