JPS5549413A - Ice crusher for structure in freeze-up water - Google Patents

Ice crusher for structure in freeze-up water

Info

Publication number
JPS5549413A
JPS5549413A JP12265378A JP12265378A JPS5549413A JP S5549413 A JPS5549413 A JP S5549413A JP 12265378 A JP12265378 A JP 12265378A JP 12265378 A JP12265378 A JP 12265378A JP S5549413 A JPS5549413 A JP S5549413A
Authority
JP
Japan
Prior art keywords
ice
counterweight
weight
crushing
plate
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
JP12265378A
Other languages
Japanese (ja)
Inventor
Masaaki Kawahara
Namio Urabe
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.)
JFE Engineering Corp
Original Assignee
NKK Corp
Nippon Kokan 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 NKK Corp, Nippon Kokan Ltd filed Critical NKK Corp
Priority to JP12265378A priority Critical patent/JPS5549413A/en
Publication of JPS5549413A publication Critical patent/JPS5549413A/en
Pending legal-status Critical Current

Links

Landscapes

  • Crushing And Grinding (AREA)

Abstract

PURPOSE: To enable an effective and economical crushing of ice plates which approach or form in the surroundings of a structure by constituting an ice crusher of an ice-crushing weight, counterweight, ice-crushing weight holding mechanism, and counterweight push-up mechanism.
CONSTITUTION: An ice crusher comprises: an ice-crushing weight 1 which is dropped from above to crush an ice plate 18; a counterweight 2 for elevating the weight 1 to a predetermined fixed position; a stop metal 3 for holding the elevated weight 1 in the fixed position; a booster 5 which is pushed against the ice plate 18 and boosts the ice pressure to a high pressure sufficient for pushing up the counterweight 2; a hydraulic jack 6 which is connected with the booster 5, situated directly below the counterweight 2, and used for pushing up the counterweight 2 to such a position as to enable the fall of the weight 1 on the ice plate 18.
COPYRIGHT: (C)1980,JPO&Japio
JP12265378A 1978-10-06 1978-10-06 Ice crusher for structure in freeze-up water Pending JPS5549413A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12265378A JPS5549413A (en) 1978-10-06 1978-10-06 Ice crusher for structure in freeze-up water

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12265378A JPS5549413A (en) 1978-10-06 1978-10-06 Ice crusher for structure in freeze-up water

Publications (1)

Publication Number Publication Date
JPS5549413A true JPS5549413A (en) 1980-04-09

Family

ID=14841291

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12265378A Pending JPS5549413A (en) 1978-10-06 1978-10-06 Ice crusher for structure in freeze-up water

Country Status (1)

Country Link
JP (1) JPS5549413A (en)

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