| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent any accident in automatic traveling due to the deterioration of braking performance from occurring by installing a switch in the operating position of a brake actuator corresponding to in both times of braking and non-braking of a brake gear and also control means inputting an output signal of this switch, respectively. SOLUTION: A relationship between a rocking position of a first rocker member 81 and a tensile degree of a brake wire 41 is initially adjusted justly at the time of locking the brake wire 41 in time of assembling, but it is varied according to the degree of performance deterioration as a brake. In brief, both first and second rotational positions of a rotary arm 85 are not at the side of brake motor M3 , and it is determined by a restriction in the brake. In the case where a first microswtich 88 is in a state of being turned off in a nondriving state of this brake motor M3, or in the case where a second microswitch 89 is in a state of being turned off, whereas the brake motor M3 is continuously driven and the rotary arm 85 is rotated, it is so judgeable that something trouble is produced in the brake.</p> |
