How to eliminate the failure of the main motor of the concrete pump to start failure
In the course of construction, failure of the concrete pump is inevitable, but if we take correct and timely maintenance methods, there is no big threat to the production process. But this requires us to accumulate and learn more. Let's take a look at how to troubleshoot if the main motor fails to start or does not reach the speed.
1. Circuit breaker troubleshooting: If the main motor cannot be started during the working process, check whether QF1 is closed. If QF1 cannot be closed, check the circuit to eliminate the fault.
2. Circuit fault troubleshooting: If the main motor start button is pressed, the motor casing runs, but the inspection finds that the specified speed is not reached. At this time, it should first check whether the power supply voltage is normal, whether the transformer capacity is sufficient, and then determine whether the power supply line diameter is Meet the requirements and ensure that the voltage drop is within the specified range to solve the problem.
3, hydraulic system troubleshooting: due to improper operation of the hydraulic system will also cause difficulty in starting, so when starting up, you should first check the water pump, then check whether the mixing motor operating handle is in the neutral position, whether the pumping button is closed. If it is not possible to start, check whether the solenoid valve that controls the pressure of the main oil pump is normal, and ensure that the main oil pump is in the discharge state at the start.
If the concrete pump is found to have a large voltage drop when starting, the wire diameter can be appropriately increased. If the main motor cannot start after the pump is turned on, check whether the solenoid valve that controls the pressure of the main oil pump is normal, and ensure that the main oil pump is in the discharge state when starting. We should check regularly during normal use to see if there is a fault.
We all know that the stability of the machine should be ensured during the use of the concrete pump, otherwise it will affect the use of the concrete pump and even cause the concrete pump to roll over. With the update of technology, is there any way to prevent the concrete pump from rolling over?
A leg force sensor can be used, which can detect the force of each leg in real time, and warn or terminate the current action when the force of both legs is less than a certain value. It should be added that this method is not omnipotent. This type of gravity sensor can only sense the force in a certain direction. Due to the sway of the whole vehicle and the verticality of the legs during pumping, the detected force is true. Insufficient sex, there is the possibility of false signals and missing signals. A tilting device for detecting the levelness of the concrete pump and a sensor for detecting the force of the leg. The tilt sensor can sense the level of the whole vehicle and send the horizontal angle information in real time, which can effectively avoid the whole vehicle tipping caused by the slow ground settlement. The function of the tilt sensor is to measure the angle of tilt of the vehicle in real time. The tilt sensor measurement accuracy is higher than 0.05 degrees. It can filter out the small tremor caused by the engine and pump vibration. When the left and right angle is greater than three degrees or the front and rear tilt angle is greater than five degrees, the alarm will be triggered.
