What causes the motor in the hydraulic system to suddenly fail to carry the hydraulic pump?

The reasons are as follows: 1. Adjust the relief valve, check the system pressure from small to large, and adjust the relief valve to the normal working pressure;

2. When the system is not working, the system should be pressure relief overflow, if the pump is stopped during this period (no load), the motor is not good, the valve may be blocked, check, clean and try again should be no problem;

3. The motor itself is overloaded and set too low, causing tripping and stopping the pump, which may also be caused by the poor quality of some components;

4. Other valves of the system or the flow of oil are not smooth, resulting in high pressure and overload of the system to stop the pump;

5. There is a problem with the wiring, and it is overloaded;

The above are basically all the reasons, but the possibility is high, and the others are not ruled out due to careless work, so it is recommended to exclude them one by one.

The function of the hydraulic system is to increase the force by changing the pressure. A complete hydraulic system consists of five parts, namely power components, actuators, control elements, auxiliary components (accessories) and hydraulic oil. Hydraulic systems can be divided into two categories:

Hydraulic transmission system and hydraulic control system. The main function of the hydraulic transmission system is to transmit power and movement. The hydraulic control system should make the output of the hydraulic system meet specific performance requirements (especially dynamic performance) [1], and the hydraulic system usually refers to the hydraulic transmission system.

The hydraulic power part is represented in a circuit diagram to show the interrelationship between the different functional elements. The hydraulic source contains a hydraulic pump, an electric motor and hydraulic auxiliary components; The hydraulic control part contains various control valves for controlling the flow, pressure and direction of the working oil; The actuator contains a hydraulic cylinder or a hydraulic motor, which can be selected according to the actual requirements.

When analyzing and designing real-world tasks, block diagrams are typically used to show the actual health status of the equipment. The hollow arrows represent the signal flow, while the solid arrows represent the energy flow.

Sequence of action in the basic hydraulic circuit – reversing and spring return of control elements (two-position four-way directional valves), extension and retraction of actuators (double-acting hydraulic cylinders) and opening and closing of relief valves. For actuators and control elements, the presentation is based on the corresponding loop diagram symbols, which also prepares the way for the introduction of loop diagram symbols.

Depending on how the system works, you can number all circuits sequentially. If the first actuator number is 0, the control element identifier associated with it is 1. If the component identifier corresponding to the actuator extension is an even number, the component identifier corresponding to the actuator retraction is an odd number.

Not only the hydraulic circuits should be numbered, but also the actual equipment should be numbered so that system faults can be identified.

Limited pressure valve, right? In the case of a limited pressure valve, it may be that the pressure limiting valve is broken. It's not bad, but the oil pump is stuck and the coupling is stuck.

Hello Hello I am glad to answer for you, in the actual operation of the hydraulic press, there are many reasons why the pressure can not rise, and there are many types of hydraulic presses, but the principle of comprehensive hydraulic press work can be analyzed from the following aspects: 1. Common sense operation errors. Although this phenomenon is relatively simple, it should also attract the attention of hydraulic press operators, such as three-phase reversal, the height of the oil tank can not hit the specified value, and the pressure regulating valve is not adjusted to high pressure (that is, the relief valve is not adjusted).

This phenomenon usually occurs when new employees use hydraulic presses for the first time. 2. The power of the hydraulic press is not enough. Generally appears on the older machine, either the hydraulic pump is lost, or the motor is aging, at this time, you can put the palm on the outer wall of the oil inlet pipe (that is, the pipe of the hydraulic pump connected to the oil tank), start the hydraulic press, if the suction power is very large when the machine presses the workpiece, the hydraulic pump is fine, and there is a problem otherwise; If the motor is really aging, it will produce a lot of noise, because the motor can't bring an oil pump, resulting in the motor being suffocated, so the sound will be very loud.

Summary. Hello, dear, there may be factors such as: 1) the failure caused by the hydraulic pump itself, 2) the oil. The viscosity of the oil is too high or too low will affect the normal operation of the hydraulic pump.

Hello, dear, there may be factors such as: 1) Failure caused by the hydraulic Xixin pump itself, 2) Oil. The viscosity of the oil is too high or too low, which will affect the normal operation of the hydraulic pump. Wake up the wheel.

Hello, also look to see if the plug is loose or disconnected.

Hello, in addition, if the shaft of the motor installed on the hydraulic system does not rotate, the hydraulic oil pump (gear pump, piston pump, lobe pump, variable vane pump, quantitative vane pump, double vane pump, internal gear pump, external gear pump) does not rotate. The reason why the shaft of the motor does not rotate may be that the motor is not energized or that there is a problem with the electrical circuit components of the hydraulic system.

The distribution valve does not produce oil.

Hello, could it be that the liquid level is low and the oil cannot be pumped?

Hydraulic fluid is plentiful.

Or the suction pipe is clogged @

Directly do not work at work.

Hello, the speed of the hydraulic pump in the work of this high process is too low, or do not want to touch the work, it may be that the oil viscosity is too large, the blades can not work normally, in addition, the blades and the pump body are in poor contact, resulting in inconvenience, or the oil port has air leakage, and the organizational structure is too loose and lacking.

The electronic valve is energized normally.

Hello, if the main engine and the pump point the old steering is opposite, there will be no oil. When we install, we must pay attention to the steering arrow on the pump to identify the only rise, and pay attention to distinguishing. It is recommended to take a look at this aspect.

The hydraulic pump has not been repaired.

Hello, how long has the hydraulic pump been used?

More than 6,000 hours.

Hello, generally most of the hydraulic pump makes the former life is more than 20,000 hours, this time you use Hui Xiang is not long, should not be the factor of the hydraulic pump itself, it is recommended to see if the suction pipe is blocked. Banquet only.

Summary. If you can't check the hydraulic pump, it may be damaged and stuck, resulting in too much load on the motor to start.

Pro, manually pull the motor and the hydraulic pump connection shaft to see if it can be triggered, if you can't check the hydraulic pump, it may be damaged and stuck, resulting in the motor group macro load is too large to collapse and start the silver book.

1. The reasons why the dry hydraulic pump does not work at all: 1Connection of remote control cable and plug 2Partial annihilation of filial piety opened 3When pressing the button down the pump does not work 4Other electrical issues.

Second, the solution of the hydraulic pump does not work at all: 1Check the connection of the plug2Check if the connection is secure3Overhaul at an authorized repair site.

What is the reason why the hydraulic press does not run Hello, the hydrophilic oil is used at high temperature and high pressure, and it will gradually age and deteriorate with the extension of the time, and the following conditions occur. Changes in the state of the oil. This refers to the aging of oil products, such as the color of the oil, the ambiguity and the change of the external situation.

The flash point is reduced, but it is also true that there are different types of oil mixed with it. Significant changes in acid number. Mechanical impurities increase hydraulic oil is used at high temperature and high pressure, and it will gradually age and deteriorate with the extension of time, and the following conditions occur.

Changes in the state of the oil. This refers to the aging of the oil, such as changes in the color, temperament and appearance of the oil. The flash point is reduced, but it is also true that there are different types of oil mixed with it.

Significant changes in acid number. Increased mechanical impurities. Deterioration of demulsibility and foaming resistance.

Stability deteriorates. The deteriorated hydraulic oil of the hydraulic press cannot meet the requirements of the hydraulic system and needs to be replaced. At present, it is determined that there are three methods to change the oil by time, and the oil change is analyzed according to experience, fixed cycle oil change and comprehensive research.

The first method is based on the experience of the operator and the field technician"Look, smell, touch, shake"and other simple methods, stipulating that when the oil turns black, Yukai becomes dirty, and becomes turbid to a certain extent, the berth will be changed. The second method is to change the oil after using it for half a year, one non-or 1000 2000h according to different equipment and different oil products. The above two methods are widely used, but they are not very scientific and economical.

The third kind of party timidity is to take regular oil samples for laboratory testing and determine the necessary items in order to continuously monitor the deterioration of the liquid, and determine when to change the oil according to the actual situation of the physical and chemical performance index changes of the hydraulic oil. ​

Summary. Hydraulic press, what is going on when the motor can't pull when pressurized, hello For your problem, I make the following solutions: The motor can't pull may be a problem in the following aspects:

1.Insufficient power supply: check whether the power supply is normal and whether the power supply voltage conforms to the rated voltage and rated frequency of the motor.

2.Motor overload: Check if the load on the hydraulic press is too large, causing the motor to run more than its rated load.

3.Motor damage: Check whether the motor is damaged, it may be motor winding burned or bearing damage, etc.

4.Transmission system failure: Check whether the transmission system of the hydraulic press, including the connecting rod, transmission shaft and other parts are faulty.

Hydraulic press, what is the matter with the motor not being able to pull when pressurized.

Hydraulic press, what is going on when the motor can't pull when pressurized, hello For your problem, I make the following solution: The motor can't pull may be a problem in the following aspects: 1

Insufficient power supply: check whether the power supply is normal, and whether the power supply voltage meets the rated voltage and rated frequency of the motor. 2.

Motor overload: Check whether the load of the hydraulic press is too large, resulting in the running load of the motor exceeding its rated load. 3.

Motor damage: Check whether the motor is damaged, it may be motor winding burned or bearing damage, etc. 4.

Transmission system failure: Check whether the transmission system of the hydraulic press, including the connecting rod, transmission shaft and other parts are faulty.

Extended supplement: The hydraulic press is a kind of machine that uses liquid to transfer energy, which is mainly composed of a hydraulic control system, a hydraulic actuator and an electrical control system. Hydraulic presses are widely used in metallurgy, chemical industry, machinery, energy front, aviation and other fields, because of its large bearing capacity, high precision, fast speed and other advantages, Chisen has received extensive attention and use.

When using the hydraulic press, it is necessary to pay attention to safety issues, especially for special occasions such as flammable and explosive, and carry out regular inspection and maintenance of the hydraulic press to ensure its normal operation and production efficiency.

Hydraulic press, what is the matter with the motor not being able to pull when pressurized.

Dear <> will be happy to answer for you. When the motor cannot be pulled when pressurized, it is generally the failure of the hydraulic press. First of all, it is necessary to check whether the power supply of the hydraulic press is normal; Secondly, it is necessary to check whether there are obstacles in the hydraulic system of the hydraulic press, check the oil pump, hydraulic oil tank, oil filter, hydraulic oil pipe, etc., to see if there is any blockage and oil leakage; Again, check the control system of the hydraulic press to see if there is an overload or short circuit; Finally, check the motor of the hydraulic press to see if there is any burning or overheating of the source hand.

If the motor of the liquid cracked orange press cannot be pulled, it must be repaired in time to ensure the normal operation of the hydraulic press. First of all, it is necessary to check the drive motor of the hydraulic press, check whether the wiring of the motor is correct, whether the current of the motor is normal, and whether the temperature of the motor is normal; Secondly, it is necessary to check the hydraulic system of the hydraulic press, check the oil pump, hydraulic oil tank, oil filter, hydraulic oil pipe, etc., to see if there is any blockage and whether there is oil leakage; Again, check the control system of the hydraulic press to see if there is an overload or short circuit; Finally, check the motor of the hydraulic press to see if there is any burning or overheating. The above is the general situation and the corresponding maintenance method when the motor cannot be pulled when the pressure is pressurized.

In the maintenance process, we must pay attention to safety and ensure that the hydraulic press works normally to ensure production efficiency and quality. <>