Pump truck emergency shutdown button cause electromagnetic valve is closed
Pump truck emergency shutdown button cause electromagnetic valve is closed
by:AIRWOLF2020-07-21
Pump truck emergency shutdown button cause electromagnetic valve is closed machinery experts marketing (
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Site selection.
Should as far as possible away from obstacles such as high tension line.
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Before the examination.
Work station of the power switch should be located in the 'off' position;
Concrete displacement handles and mixing plant reversing handle should be located in the median.
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Leg operation.
Concrete pump truck should be placed, supporting the ground should be smooth, solid, ensure no subsidence during the process of work.
Leg can support the whole machine is stable and reliable, and can be locked in a reliable way.
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Arm operation.
Folding state stretch or recovered by the boom, should be carried out in accordance with the prescribed order.
Boom rotary operation must be completely in boom left arm frame bracket.
In the state of the storm or wind reaches level or above (
The wind speed to m/s)
And shall not use boom.
Boom must not be used for lifting operation.
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Pumping operations.
When start or stop pumping, should contact at the end of the hose operator;
Hose at the end of the bending radius should not be less than m, and are not allowed to be bent;
Before open pipeline, the pump should be ~ time, wait for after confirm no residual pressure in the pipeline to remove again.
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Check after operation.
Boom should be fully recover on a boom stand;
Leg should also fully recover, and in the lock pin.
Work station of the power switch should be in the position of the 'off'.
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Only into nitrogen gas accumulator, and which cannot be rushed into oxygen, hydrogen and other inflammable and explosive dangerous gas.
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Emergency shut down button.
There are a series of emergency shutdown button in the concrete pump truck, they set the leg control valve, cable and wireless remote control system and control box, such as in case of an emergency, just press the emergency shut down or one of them can be shut down the machine.
If the malfunction of the emergency shutdown button in a dangerous situation will not be able to quickly shut down when the machine.
In every time before starting work, therefore, have to check the function of the emergency shutdown button.
When the emergency shutdown button is pressed, the machine of the electric system is cut off, led to the closing of electromagnetic valve, etc.
If a leak of hydraulic system, can cause failure phenomenon, such as placing boom sinking the situation cannot be used by the method to solve the emergency shutdown button.
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Operators need to the professional training of concrete pump truck rear can mount guard operation.
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The pumping concrete should meet the requirements of the pumpability of concrete pump truck.
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Concrete pump truck pump working points with reference to the use of concrete pump.
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When the machine is in horizontal allow maximum slope Angle for o, greater horizontal Angle can make the steering gear overload of cloth, and endanger the stability of the machine.
If placing boom in one leg or in the mobile, which a few leg has been away from the ground, it is necessary to reset the leg, until all the leg can be always reliable support on the ground.
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In order to ensure the placing boom pump work in the best state, should be (1) lift arm o.
(2) the placing boom rotary o.
(3) the knuckle arm stretched o.
(4) stretching, and knuckle arm in a horizontal position.
If the last section placing boom in a horizontal position, the pump from the ideal.
If this section of the placing boom position in horizontal condition, the concrete flow speed will slow, which can reduce the hose at the end of the pipeline and the wear and tear, when the pump stop, only inside the hose at the end of the concrete.
If the last section the placing boom sloped down state, so in this part of the pipeline within the concrete will flow under the action of gravity acceleration, and within the pump stops pipeline of concrete will continue to flow out.
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Pump stop min or more, to the end of the hose to the concrete.
Dehydration otherwise due to the end of the hose in the concrete, pumping concrete will be fierce when working again, to splash around, as the end of the hose is easy to damage.
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In order to change the position of the arm or concrete pump truck and need folding, stretch, or withdraw the placing boom, the pump action again after ~ time, it can be placed in the falling movement inside the pipeline when the concrete or splash.
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