To prevent a user from installing a fall prevention safety device upside down erroneously.
A main rope retainer 1 storing a main rope W in the vertical direction is swingably provided with a pushing member 5 connected with a safety rope R, a swinging shaft 3 of the pushing member 5 is rotational to the main rope retainer 1, and the end part of the swinging shaft 3 can be fixed by a locking shaft 11 advancing and retreating freely. The main rope retainer 1 is provided with the locking member 17 advancing/retreating relative to the locking shaft 11, and the locking member 17 is locked to the circumferential face or the end face of the locking shaft 11 to retain the fixed state or rotational state of the locking shaft 11 to the swinging shaft 3. A stopper member 20 is vertically swingably provided to the main rope retainer 1, when the main rope retainer 1 is installed on the main rope W in the normal state, is swung by the dead weight to separate from an advancing/retreating space of the locking member 17, while being installed upside down, enters into the advancing/retreating space of the locking member 17 and prevents the release of the locking of the locking shaft 11 by the locking member 17. This constitution can prevent a worker from installing the main rope retainer 1 upside down.
JPS62116753U | 1987-07-24 | |||
JP2000310040A | 2000-11-07 | |||
JPH0237661U | 1990-03-13 | |||
JP2001017558A | 2001-01-23 |
Higashio Masahiro
Torii Kazuhisa
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