If the multi-functional concrete mixer fails, it will not cause harm to the vehicle itself. More importantly, the concrete in the mixer truck will also be affected. If the concrete solidifies due to the fault of the multi-functional concrete mixer, it will cause extraordinary losses. Therefore, in order to avoid this situation, when the concrete mixer truck is found to have fault When the fault occurs, it is necessary to find out the fault point and solve it in time.
1、 Working principle of can body rotation
Engine power take-off - transmission shaft - oil pump - motor - reducer - can body rotation
2、 Cause analysis
The main reasons for the stop of mixing tank of multi-functional concrete mixer are as follows:
1. Engine failure: the engine cannot be started and the power take-off is damaged
2. Upper mounting fault: transmission shaft damage, oil pump failure, hydraulic oil too dirty or insufficient, motor failure, reducer failure, control rod loose and other reasons.
3、 Find the fault point
When the multi-functional concrete mixer truck can't rotate in the process of transporting concrete, it should be stopped for inspection. Through "one listen, one look, one move" to quickly find out the fault point. "One listen" refers to whether the parts from the transmission shaft to the reducer make abnormal noise; "one look" refers to whether the oil level of the hydraulic oil tank is too low or the pipeline has serious oil leakage; "moving" refers to pulling the servo rod of the oil pump back and forth, and whether the tank body does not rotate in both positive and negative directions.
Note: after the tank stops rotating, contact the local service personnel (attached with the address book) to inform the concrete mark number and pre setting time in the tank. The service personnel will guide you how to handle it patiently. At the same time, please drive the vehicle to the nearest service station.
4、 Emergency measures
If the self loading concrete mixer cannot be repaired before the concrete is pre set, emergency measures shall be taken immediately:
1. When the motor and reducer have no fault, connect the "emergency oil pipe" to unload the concrete, so as to prevent the occurrence of condensation grouting accident.
2. If the motor or reducer fails and it is determined that the tank can not rotate before the concrete is pre set, please quickly open the manhole cover. If the manhole cover is not under the tank body, it is necessary to open a hole at the bottom of the front cone of the tank body (Φ = 1250px, avoid the original weld bead). At the same time, a large amount of clean water must be poured into the feeding port to flush the concrete in the tank until there is no concrete flowing out under the tank body and a small amount of residual in the tank The remaining concrete needs to be cleaned manually. After cleaning, the cut part should be re welded to the tank body of the concrete mixer truck (the manhole cover should be installed) and polished and painted.