| 摘要 |
PURPOSE: A lining abrasion detecting device of a brake is provided to prevent malfunction of a warning lamp by precisely detecting lining abrasion with a pressure sensor without any influence of external factors. CONSTITUTION: A lining abrasion detecting device comprises a pressure sensor(13) and a warning lamp(14). The pressure sensor is installed in a piston(12b) of a return cylinder(12), and receives pneumatic pressure at a lining abrasion limit time. The warning lamp is installed on an indoor crush pad and is connected to the pressure sensor. The warning lamp is turned on when the pressure sensor is turned on so that a power source is able to be supplied. [Reference numerals] (10) Solenoid valve; (14) Warning lamp; (AA) Operation of a brake; (BB) Return of a brake shoe; (CC) Moving distance when reaching a lining abrasion limit;
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