Method and system to measure and monitor the grey water (34) content in a rotating concrete mixer drum (2) of a mixer truck using a sensor attached to the interior of the concrete mixer drum. By measuring the grey water content before a batching process ta...

A chute swing restricting mechanism for locking a chute supported by a rotary shaft being rotatably arranged on a vehicle body of a concrete mixer truck in a storage position includes an engagement part which is rotatable along with the rotary shaft and ha...

A chute turning restriction mechanism (100) includes: a rotary shaft (20) on which a chute (10) is disposed and which is provided to be capable of rotating relative to a vehicle body (2) of a mixer truck (1); a bracket (120) that is provided on the vehicle...