How to maintain concrete pump truck

Concrete pump truck is transformed from truck chassis, equipped with motion and power transmission device, pumping and mixing device, distributing device and other auxiliary devices. The power of the concrete pump truck transfers the power of the engine to the hydraulic pump group or the rear axle through the power transfer box, and the hydraulic pump pushes the piston to drive the concrete pump to work. Then, the concrete is transported to a certain height and distance by using the placing boom and conveying pipe on the pump car. There are many problems that need to be paid attention to when using concrete pump truck. For example, concrete pump trucks can only be used to transport concrete, and any other use (such as lifting weights) is dangerous. Let's take a look at the relevant knowledge together. A, concrete pump truck operation matters needing attention

Precautions for application safety

1, the concrete pump truck can only be used for concrete transportation, and any other use (such as lifting heavy objects) is dangerous.

2. The height and distance of concrete pumped by the boom of the pump truck have been strictly calculated and verified by experiments. It is not allowed to connect the pipeline behind the end hose or lengthen the end hose by more than 3m, and the risks arising therefrom shall be borne by the operator.

3. It is forbidden to modify the pump truck without authorization, which may affect the safety, including changing the setting of safety pressure and running speed; Use large diameter conveying pipe or increase the wall thickness of conveying pipe, and change the control program or circuit. Changes in suspenders and legs, etc. 4. Pump truck operators must wear safety helmets and abide by on-site safety regulations and safety regulations.

Support safety precautions

1. The supporting ground must be horizontal. Otherwise, it is necessary to make a horizontal supporting surface. Can't support on the cavity.

2. The pump truck must be supported on a solid ground. If the maximum pressure of the leg is greater than the allowable pressure on the ground, the supporting surface area must be increased with supporting plates or auxiliary square timber.

3, pump truck bracket near the pit, slope, should keep enough safe spacing.

4. When supporting, ensure that the whole machine is in a horizontal state, and the maximum horizontal deviation angle of the whole machine does not exceed 3 degrees.

5. When the legs are unfolded or folded, the rotation range of the legs is a dangerous area, and people may be pinched.

6. When supporting, all the legs must be stretched to the specified position (the legs are aligned with the arrows on the lug, and the front leg arms are aligned with the arrows on the front leg extension arms), otherwise there is a danger of overturning.

7. Before operating the boom, the legs must be supported as required, and the boom must be folded on the main support of the boom to close the rod. If the stability of the leg 8 decreases, the suspender must be folded and supported as required immediately after elimination. Factors that reduce stability include changes in ground conditions caused by rain, snow water or other water sources.

Safety precautions for outriggers

1. Only after confirming that the legs of the pump truck have been correctly supported can the boom be operated, and the boom must be operated in the order specified in the operating procedure.

2, thunderstorm or bad weather conditions, can't use derrick. Derrick can't be used in weather with wind force greater than 8.

3. When operating the boom, all booms should be within the operator's field of vision.

4. When working near the high-voltage line, be careful of the danger of electric shock and ensure the safe distance between the boom and the wire.

5. Below the boom is a dangerous area, and concrete or other parts may fall and hurt people.

6. No one shall stand within the specified range of the end hose, and the pump truck shall not guide the end hose when it starts pumping. It may swing and hurt people or spray concrete to cause accidents. The dangerous area when starting the pump is the surrounding area where the end hose swings. The diameter of this area is twice the length of the end hose. The maximum length of the end hose is 3m, and the diameter of the dangerous area is 6m.

7, don't bend the end hose, the end hose can't into the concrete.

8. If the boom moves abnormally, press the emergency stop button immediately. Professionals should find out the reason and eliminate it before continuing to use it.

Safety precautions for pumping and maintenance

1. When the pump truck is running, don't open the safety protection facilities such as hopper filter screen and water tank cover, don't put your hand into the hopper or water tank, and don't grab other moving parts with your hands.

2. When pumping, it is necessary to ensure that the concrete in the hopper is above the bottom shaft position to prevent concrete spraying caused by inhaled gas.

3. When plugging the pipe, the pump must be reversed, and the concrete pump pipe can only be removed after the pressure in the pipe is released.

4, only when the pump truck is placed on a stable ground, and to ensure that there is no unexpected movement, to carry out maintenance and repair work.

5. Only when the boom is folded or reliably supported, the engine is turned off and the legs are fixed can maintenance and repair be carried out.

6, must stop before maintenance, and release the accumulator pressure.

7. If the hydraulic lock of the boom is opened without first fixing the corresponding boom, there is a danger that the boom will fall and hurt people.

Second, how to maintain the concrete pump truck

1, the maintenance method of the concrete pump truck should be in accordance with the corresponding requirements and methods in the maintenance manual. During daily use, the related items of the pump truck before and after use should be checked.

2. According to the corresponding requirements and methods in the operation and maintenance manual and referring to the lubrication table, lubricate all parts of the pump truck timely and fully.

3. According to the corresponding requirements and methods in the operation and maintenance manual, select the specified type of hydraulic oil and change the oil for the hydraulic system regularly.

4. According to the maintenance methods and requirements in the user manual of the concrete pump truck, regularly check the water tank, concrete cylinder and concrete delivery pipe of the pumping system.

5. According to the corresponding requirements and methods in the operation and maintenance manual, regularly check and adjust the torque of the fixing bolts of the boom rotating base.

6, according to the maintenance method in the concrete pump truck user manual, regularly check and adjust the boom, rotating base, legs, supporting structure, reducer and other components.

7. Regularly check the working conditions of hydraulic system and components, electrical system and components according to the corresponding requirements and methods in the operation and maintenance manual.

8, in view of the cold weather concrete pump truck maintenance method should be adopted.