Sany concrete pump truck does not change direction or slow speed when pumping

The reversing is controlled by the constant pressure pump of the pump truck, depending on what your car is, the old one is a constant pressure pump, the first is a duplex gear pump, and if it is a duplex gear pump, the two jumps will be swapped to see the reversing pressure. Normally, the pressure is between 12 and 16 megapascals, and then there is the pressure of the nitrogen bladder, and then there is the relief valve to see if it is damaged or electrified. Anyway, you want to eliminate it in the first easy and then the hardest.

Summary. Hello, the pumping speed of Sany pump truck fluctuates, which may be caused by a variety of factors, and the following are some possible reasons: 1

Poor pumping pipeline: Obstruction or blockage in the pumping pipeline will cause the pumping speed to be unstable, or even high and low. 2.

Poor condition of the pumping pump: Wear and loosening of the internal parts of the pumping pump will lead to unstable pumping speed. 3.

Underloaded or damaged engine: If the engine is underloaded or damaged, it can lead to unstable pumping speeds or even ups and downs. 4.

Hydraulic system failure: Lack of hydraulic oil in the hydraulic system or gas mixing in the hydraulic system can affect the pumping speed. 5.

Improper operation: Incorrect operation can also lead to unstable pumping speeds, for example, uneven operation frequency, improper adjustment of throttle, etc. In order to rule out the above possible factors, a comprehensive inspection and maintenance of the pump truck can be carried out.

Hello, the pumping speed of Sany pump truck fluctuates, which may be caused by a variety of factors, and the following are some possible reasons: 1The pumping pipeline is not smooth, and the banquet brother is in a hurry:

Obstructions or blockages in the pumping line can lead to unstable pumping speeds, or even high and low speeds. 2.Pumping pump condition is not good:

Wear and loosening of the internal parts of the pumping pump will lead to unstable pumping speed. 3.Underloaded or damaged engine travel:

If the engine is underloaded or damaged, the pumping speed will be unstable or even high and low. 4.Hydraulic system failure:

Lack of hydraulic oil in the hydraulic system or the presence of gas dust in the hydraulic system can affect the pumping speed. 5.Improper operation:

Incorrect operation can also lead to unstable pumping speeds, e.g. uneven operating frequency, unadjusted throttle, etc. In order to rule out the above possible factors, a comprehensive inspection and maintenance of the pump truck can be carried out.

Unstable engine speed, what is the reason.

Hello, the stable speed of the pump truck pump engine is one of the important conditions to ensure the smooth pumping of concrete. If the pump truck pump engine speed is unstable, there may be the following reasons:1

Clogged air filter: The air filter is necessary to ensure the normal combustion of the engine. If the air filter is clogged, it can cause insufficient air flow and cause unstable engine speed.

2Throttle failure: The throttle is the device that controls the intake air flow of the engine.

If the throttle is opened too large or too small, it will cause the engine to be unstable. 3.Poor fuel quality:

Poor fuel quality, or the presence of impurities and moisture in the fuel, can affect combustion efficiency and lead to unstable engine speeds. 4.Fuel filter clogged:

A fuel filter is a piece of equipment that prevents impurities from fuel from entering the engine. If the fuel filter filter is clogged, it will cause insufficient fuel flow, which will affect combustion efficiency and cause engine speed instability. 5.

Ignition system failure: The ignition system is one of the important equipment to ensure the normal combustion of fuel. If the ignition system fails, it will lead to insufficient combustion and affect the stability of the engine speed.

The most basic thing you can read the manual I now say that the most common and the most difficult to solve Look below The electrical control system is the "nerve center" of the concrete pump truck, and it is an important guarantee for the normal operation of the pump truck, the composition of the system is complex, and the fault location is relatively difficult. In order to minimize the loss of production, it is necessary to realize the rapid detection and positioning of the electrical system fault of the concrete pump truck, and the maintenance idea is: familiar with the working principle of the pump truck and the electrical logical relationship of various actions, in accordance with the correct fault detection process and the use of effective fault detection means for detection, and constantly reduce the scope of the fault, and finally find out the fault point to be eliminated Sany Heavy Industry's SY5392-40 pump truck adopts Siemens' S7-200 series PLC control system, It consists of 1 x CPU224 and 2 x EM223 expansion modules.

1 1 Fault Phenomenon and Fault Analysis C 0 7F After the pump truck arrived at the scene, after switching the transfer case from the driving position to the pumping position, it was found that the horn sounded for a long time, and the hydraulic system of the whole vehicle did not work. The schematic diagram of the fault part is shown in Figure 1. After inspecting the pump truck, it was found that when the transfer case was switched to the driving position, the system did not alarm and worked normally, so it was found that the horn long beeping alarm fault was caused by the chassis of the car.

Check again against the electrical system drawings, and find that when switching to the driving position, the EM223 (1) 4 indicator light is on, and when switching to the pumping position, the EM223 (2) 5 indicator light is not on, so it is suspected that the SQ2 proximity switch is damaged, and it is found that there is indeed no input signal when measuring with a multimeter, and the two ends of a meter pen are shorted to 40 wires, and later, the alarm is released, and it can work. Check that the mechanical part of the transfer case is in the pumping position and prove that the SQ2 proximity switch is indeed damaged. Troubleshooting Because there is no proximity switch spare parts on site, the temporary short-circuit method is used to maintain production, and after shorting with the temporary line and 40 wires, the pump truck works normally, and the proximity switch is replaced after the production is over.

Sany pump truck adjusts the speed of the boom.

May I ask what is the reason for the frequent gear hanging errors of Sany 37-meter pump trucks?

What is the reason why the Sany pump truck does not turn when stirring? There is no counter-pump.

Dear We will be happy to answer your <>

There may be several reasons why the Sany pump truck does not turn when stirring:1Hydraulic system failure:

It can be caused by problems such as hydraulic pumps, hydraulic motors, blocked or leaking hydraulic circuits. Check the hydraulic system to make sure the hydraulic oil is flowing smoothly and without leaks. 2.

Electrical system failure: It may be the fault of electrical components such as wiring, switches, relays, etc. Check the electrical system to make sure all connections are working properly and that there are no short or open circuits.

3.Mechanical failure: It may be worn or damaged mechanical parts such as reducers, chains, gears, etc.

Inspect and balance mechanical components to ensure they are working properly. 4.Operational Issues:

It may be caused by improper operation by the operator. Ensure that the operator is familiar with the pump truck operation process and operates it correctly. 5.

Other reasons: It may be that the pump truck has not been used for a long time, the parts are rusty and stuck, etc. The pump truck needs to be maintained to ensure that it is working properly.

We recommend that you troubleshoot the problem based on the preceding causes to find the problem and fix it. If necessary, please check and repair by professional maintenance personnel.

Summary. Hello, I am glad to answer your questions, and for you to inquire about the reasons why the Sany pump truck does not turn may be as follows: 1

Motor failure. If the motor of the mixing system is burned, short circuit, etc., it will cause the stirring to not rotate. The motor and related wiring need to be inspected for necessary repairs or replacements.

2.Gear transmission failure. If the gear transmission system has a gear break, shaft expansion jam and other faults, it will block the transmission of power, resulting in no rotation.

The gear transmission system needs to be inspected and repaired. 3.The discharge port is blocked.

If the discharge port of the concrete pump truck is blocked, it will cause the rotational resistance of the mixing system to increase suddenly, so as to stop the rotation. It is necessary to clean the concrete fragments at the discharge port, etc. 4.

Hydraulic system failure. The start-up and operation of the agitation system relies on the hydraulic system to provide power. If the hydraulic pump, actuator, pipeline, etc. fails, it will cause the mixing system to lose power and stop.

Faulty parts of the hydraulic system need to be repaired or replaced. 5.Limit switch failure.

If the hydraulic cylinders or gears of the agitation system reach the limit position and the limit switch does not signal the stop correctly, continuing to run will cause the system to be overloaded and stopped. Limit switches need to be inspected and repaired as necessary. To sum up, the reasons why Sany pump truck does not turn are mainly concentrated in the power transmission system, discharging system and control and protection system.

Faulty systems need to be inspected and repaired before they can be restored to normal use.

What is the reason why the Sany pump truck does not turn when stirring? There is no counter-pump.

Hello, I am glad to answer your questions, and for you to inquire about the reasons why the Sany pump truck does not turn may be as follows: 1Motor failure.

If the motor of the mixing system is burned, short circuit, etc., it will cause the stirring to not rotate. The motor and related wiring need to be inspected for necessary repairs or replacements. 2.

Gear transmission failure. If the gear transmission system has a gear break, shaft expansion jam and other faults, it will block the transmission of power, resulting in no rotation. The gear transmission system needs to be inspected and repaired.

3.The discharge port is blocked. If the discharge port of the concrete pump truck is blocked, it will cause the rotational resistance of the mixing system to increase suddenly, so as to stop the rotation.

It is necessary to clean the concrete fragments at the discharge port, etc. 4.Hydraulic system failure.

The state change start-up and operation of the mixing system relies on the hydraulic system to provide power. If the hydraulic pump, actuator, pipeline, etc. fails, it will cause the mixing system to lose power and stop running. Faulty parts of the hydraulic system need to be repaired or replaced.

5.Limit switch failure. If the hydraulic cylinders or gears of the mixing system reach the limit position and the limit switch does not give the stop signal correctly, the system will be overloaded and stopped.

Limit switches need to be inspected and repaired as necessary. To sum up, the reasons why Sany pump truck does not turn are mainly concentrated in the power transmission system, discharging system and control and protection system. Faulty systems need to be inspected and repaired before they can be restored to normal use.

It is recommended that you check them one by one.

What is the reason why there is a cylinder in the pumping system that can't beat the concrete.

Hello, good afternoon, happy to answer for you: there may be the following reasons why a cylinder can't beat concrete: 1

Concrete mix problem: Improper concrete mix may cause the concrete to be too viscous or too low, so that the concrete cannot be pumped properly. 2.

Pumping piping problems: Pipe wear or blockage can cause concrete to be pumped poorly, resulting in a cylinder not being able to punch out concrete. 3.

Pumping pressure problems: Insufficient or unstable pumping pressure can also cause a cylinder to fail to punch concrete. 4.

Pumping distance is too far: Pumping Sosong is too far away from Shixun and may also cause a cylinder to fail to punch out concrete. Workaround:

1.Check whether the mix ratio is correct, and adjust it in time if there is a problem. 2.

Check the pumping pipes for wear or blockage, and clean or replace them if there are problems. 3.Check whether the pumping pressure is sufficient or stable, and if there is a problem, you need to adjust the pumping parameters or replace the equipment.

4.If the pumping distance is too far, you can add pumping equipment or use other methods for construction. Sany ground pump is an efficient concrete conveying equipment, which is widely used in building construction, tunnel engineering, bridge engineering and other fields.

In the process of use, it is necessary to pay attention to the maintenance of the equipment, clean the pipeline and replace the worn parts in time to ensure the normal operation of the equipment.

Summary. Kiss <>

Hello, happy to answer your <>

The reasons why Sany pumps and pumping systems cannot beat concrete include 1The concrete ratio is unreasonable, resulting in the concrete being too dry or too dense to be pumped.

2.Excessive or excessive particulate matter in the concrete, causing the pumping pipeline to become clogged or blocked. 3.

Faulty pumping pipes or valves, resulting in insufficient pumping pressure or non-functioning function. 4.Concrete is pumped too fast, causing concrete to build up or create voids in the pipes.

5.Concrete pumping distance is too long, resulting in insufficient pumping pressure or concrete loss <>of fluidity in the pipeline

What is the reason why there is a cylinder in the pumping system that can't beat the concrete.

Kiss <>

Hello, happy to answer your <>

Sany ground pump, pumping system has a cylinder can not beat the concrete of the big reasons include: 1The concrete ratio is unreasonable, resulting in the concrete being too dry or too dense to be pumped.

2.Excessive or excessive particulate matter in the concrete causes the pumping pipe to be clogged or blocked. Bi Zhu 3

Faulty pumping pipes or valves, resulting in insufficient pumping pressure or non-functioning function. 4.Concrete is pumped too fast, causing concrete to build up or create voids in the pipes.

5.Concrete pumping distance is too long, resulting in insufficient pumping pressure or concrete loss <>of fluidity in the pipeline

Why is the other cylinder so good?

Kiss <>

The other cylinder is good because the concrete ratio, particles, pumping speed, pumping distance and other factors are different from the cylinder in question. In addition, the working state of each cylinder in the pumping system will be different, and factors such as pumping pressure and pipeline friction will also affect <>the pumping effect

A car of concrete is good for a cylinder, and a cylinder is good for use.

It has nothing to do with hydraulic valves and hydraulic cylinders.

Kiss <>

The hydraulic system of the concrete pump truck is the key component to control the pumping system, including hydraulic valves and hydraulic cylinders. The hydraulic valve is mainly responsible for controlling the flow direction and pressure of the hydraulic oil, so as to control the working state of the pumping system; The hydraulic cylinder is mainly responsible for pushing the piston, creating pressure from the afterglow to push the concrete into the pipe. Therefore, the working state of the hydraulic valve slip punch and the hydraulic cylinder has a great impact on the working effect of the concrete pump truck.

If a cylinder is good to use and a cylinder is not good, it is the problem of the letter destruction of the hydraulic valve or the hydraulic cylinder.

Kiss <>

In addition to hydraulic valves and hydraulic cylinders, there are other reasons why one cylinder is good and one cylinder is not good, such as: the ratio of concrete is different, resulting in better concrete fluidity in one cylinder and poor concrete fluidity in another cylinder. There is a blockage or blockage in the pumping pipeline, which prevents the concrete from flowing smoothly in one tank and the concrete in the other tank.

Some parts in the pumping system are damaged or malfunctioning, such as transfer pumps, agitators, pipes, etc., causing one cylinder to not work properly and the other to work properly.