| 摘要 |
PURPOSE:To enable a detecting sensor to mechanically sense a dangerous condition of an operator and make an emergency stopping device operate automatically on that occasion, by a method wherein the detecting sensor detecting whether or not a foot of the operator is grounded is provided. CONSTITUTION:When an emergency stopping device 3 is in a pressurized condition by stepping on a mat switch 4 by a rolling operator A, an emergency stopping device 3 does not operate since it is turned off and when the emergency stopping device 3 is in a nonpressure condition by non-stepping on the mat switch 4 by the operator A, it is operated since it is turned on. A roll is constituted so that it is stopped within its quarter turn. A safety door 5 is provided in a workshop so that opening or closing of the door is detected by a door opening/closing sensor and pressurization and nonpressure of the mat switch 4 are interlocked with the turning on/off of the emergency stopping device 3 of the mat switch 4 in an only condition where the door 5 is closed Therefore, in a released condition of the safety door 5, even if the operator A is separated from the workshop on business in the middle of operation, the emergency stopping device 3 does not operate and the roll is in a condition of an ordinary operation. Hereby, the safety door is kept on a closed condition. |
