JPS5721627A - Automatic detaching device for cylinder head in pile driver - Google Patents

Automatic detaching device for cylinder head in pile driver

Info

Publication number
JPS5721627A
JPS5721627A JP9544280A JP9544280A JPS5721627A JP S5721627 A JPS5721627 A JP S5721627A JP 9544280 A JP9544280 A JP 9544280A JP 9544280 A JP9544280 A JP 9544280A JP S5721627 A JPS5721627 A JP S5721627A
Authority
JP
Japan
Prior art keywords
cylinder
oil
pressure
cylinder head
pile driver
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.)
Pending
Application number
JP9544280A
Other languages
Japanese (ja)
Inventor
Yutaka Asaoka
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.)
SHINTO KK
SHINTOU KK
Original Assignee
SHINTO KK
SHINTOU KK
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 SHINTO KK, SHINTOU KK filed Critical SHINTO KK
Priority to JP9544280A priority Critical patent/JPS5721627A/en
Publication of JPS5721627A publication Critical patent/JPS5721627A/en
Pending legal-status Critical Current

Links

Landscapes

  • Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)

Abstract

PURPOSE: To raise the efficiency and accuracy of driving operation for a pile by using a system in which when the load, or driving force, of an oil-pressure cylinder reaches a given value, a cylinder head can be rapidly and exactly separated from the oil-pressure cylinder automatically.
CONSTITUTION: In a pile driver, a cylinder head 2 is detachably provided below a screw-driving oil-pressure motor 1 movable along the leader of the pile driver, and pile-driving oil-pressure cylinders 3 are attached to the cylinder head 2 which can be detached from or attached to the oil-pressure motor 1 by the action of a cylinder 13 inside a screw joint body 6 below the oil-pressure motor 1. When the screw reaches a hard substratum and the load on the pressure side of the cylinder 3 is increased and reaches a given value, pressure oil inside the cylinder 3 is introduced through a reduced pressure valve 42 into the rod side chamber of the cylinder 13 to retreat the cylinder 13, whereby permitting the head 2 to be separated from the oil-pressure motor 1.
COPYRIGHT: (C)1982,JPO&Japio
JP9544280A 1980-07-12 1980-07-12 Automatic detaching device for cylinder head in pile driver Pending JPS5721627A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9544280A JPS5721627A (en) 1980-07-12 1980-07-12 Automatic detaching device for cylinder head in pile driver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9544280A JPS5721627A (en) 1980-07-12 1980-07-12 Automatic detaching device for cylinder head in pile driver

Publications (1)

Publication Number Publication Date
JPS5721627A true JPS5721627A (en) 1982-02-04

Family

ID=14137801

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9544280A Pending JPS5721627A (en) 1980-07-12 1980-07-12 Automatic detaching device for cylinder head in pile driver

Country Status (1)

Country Link
JP (1) JPS5721627A (en)

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