JPS54108343A - Drum for hoist - Google Patents

Drum for hoist

Info

Publication number
JPS54108343A
JPS54108343A JP1546778A JP1546778A JPS54108343A JP S54108343 A JPS54108343 A JP S54108343A JP 1546778 A JP1546778 A JP 1546778A JP 1546778 A JP1546778 A JP 1546778A JP S54108343 A JPS54108343 A JP S54108343A
Authority
JP
Japan
Prior art keywords
guide groove
circumferential surface
rope guide
drum shell
welding portion
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
JP1546778A
Other languages
Japanese (ja)
Inventor
Ikuo Kumagai
Ryoichi Ono
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 JP1546778A priority Critical patent/JPS54108343A/en
Publication of JPS54108343A publication Critical patent/JPS54108343A/en
Pending legal-status Critical Current

Links

Landscapes

  • Butt Welding And Welding Of Specific Article (AREA)

Abstract

PURPOSE: To positively work a rope guide groove to a surface of a drum shell, by welding butt portions on an inner surface of a cylinder.
CONSTITUTION: After a drum shell 6 is shaped by cylindrically rounding a steel plate by means of a roll machine, press molding, etc., butt portions are welded on the inner circumferential surface so that a welding portion 7 of the butt surfaces not be projected to an outer circumferential surface of an inner cylinder mother material. Consequently, the extreme difference of hardness between the mother material on the outer circumferential surface of the drum shell 6 and the welding portion 7 becomes small, thus allowing the efficient and accurate cutting of a rope guide groove 2. And if the depth of the welding portion 7 from the inner circumferential surface is made so as not to reach the rope guide groove 2, the formation working of the rope guide groove 2 is further facilitated.
COPYRIGHT: (C)1979,JPO&Japio
JP1546778A 1978-02-15 1978-02-15 Drum for hoist Pending JPS54108343A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1546778A JPS54108343A (en) 1978-02-15 1978-02-15 Drum for hoist

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1546778A JPS54108343A (en) 1978-02-15 1978-02-15 Drum for hoist

Publications (1)

Publication Number Publication Date
JPS54108343A true JPS54108343A (en) 1979-08-24

Family

ID=11889596

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1546778A Pending JPS54108343A (en) 1978-02-15 1978-02-15 Drum for hoist

Country Status (1)

Country Link
JP (1) JPS54108343A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02233499A (en) * 1989-01-27 1990-09-17 Marantec Antrieb & Steuerungstechnik Gmbh & Co Prod Ohg Rope receiving drum and its producing method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02233499A (en) * 1989-01-27 1990-09-17 Marantec Antrieb & Steuerungstechnik Gmbh & Co Prod Ohg Rope receiving drum and its producing method

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