JPS5538007A - Earthquake-proof device for transformer - Google Patents

Earthquake-proof device for transformer

Info

Publication number
JPS5538007A
JPS5538007A JP10971278A JP10971278A JPS5538007A JP S5538007 A JPS5538007 A JP S5538007A JP 10971278 A JP10971278 A JP 10971278A JP 10971278 A JP10971278 A JP 10971278A JP S5538007 A JPS5538007 A JP S5538007A
Authority
JP
Japan
Prior art keywords
earthquake
embedded hardware
fit
load
threaded
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
JP10971278A
Other languages
Japanese (ja)
Inventor
Shogo Minagawa
Ryuichi Endo
Masaru Watanabe
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP10971278A priority Critical patent/JPS5538007A/en
Publication of JPS5538007A publication Critical patent/JPS5538007A/en
Pending legal-status Critical Current

Links

Landscapes

  • Housings And Mounting Of Transformers (AREA)

Abstract

PURPOSE: To improve strength and reliability of an earthquake-proof device for a transformer by designing it in such a manner that a pin structure is to cope with horizontal load and bending load and a screw structure is to cope with vertical load.
CONSTITUTION: An earthquake-proof bolt 7, which is make to pass through an installation hardware 4 from the top and securely screwed into an embedded hardware 6, is so designed that the part, which is to be fit into the embedded hardware 6, is partly threaded and the remaining portion is to become a rod portion 12. This rod portion 12 is to be larger in diameter than the screwing (or threaded) portion and fit into the embedded hardware 6 leaving an extremely small gap sufficient for turning to screw the earthquake-proof bolt 7 into the embedded hardware 6. For this reason, the embedded hardware 6 is provided with a vacant hole for enabling the rod portion 12 to be fit in and also with a screw hole for enabling the threaded portion to be screwed in. In this mechanism, concentration coefficient at the load- acting point 8 is to become approximately twice as much as the conventional, and therefore, it is possible to improve the strength with the same diameter as that of the conventional earthquake-proof bolt.
COPYRIGHT: (C)1980,JPO&Japio
JP10971278A 1978-09-08 1978-09-08 Earthquake-proof device for transformer Pending JPS5538007A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10971278A JPS5538007A (en) 1978-09-08 1978-09-08 Earthquake-proof device for transformer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10971278A JPS5538007A (en) 1978-09-08 1978-09-08 Earthquake-proof device for transformer

Publications (1)

Publication Number Publication Date
JPS5538007A true JPS5538007A (en) 1980-03-17

Family

ID=14517299

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10971278A Pending JPS5538007A (en) 1978-09-08 1978-09-08 Earthquake-proof device for transformer

Country Status (1)

Country Link
JP (1) JPS5538007A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57157121U (en) * 1981-03-25 1982-10-02
JPH04250198A (en) * 1991-01-28 1992-09-07 Nippon Kentetsu Co Ltd Operating method of washing machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57157121U (en) * 1981-03-25 1982-10-02
JPH04250198A (en) * 1991-01-28 1992-09-07 Nippon Kentetsu Co Ltd Operating method of washing machine

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