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Failure of hydraulic pump hydraulic system and cause analysis: In the maintenance of the following three points to find the cause of the malfunction, and the system to improve: (1) check the boom cylinder leakage situation. The easiest way is to raise the boom to see if there is a clear free fall. If the whereabouts of obvious removal of fuel tank inspection, seals have been worn should be replaced. (2) check the control valve. First clean the safety valve, check whether the spool wear, such as...
In the use of hydraulic oil pump motor, you will find that the motor has "leakage" phenomenon. For example, the motor rotates well. The worker touches the casing for a while and finds that the casing has electricity. What is the reason? Don't worry, Dalan Motor will help you out. 1. The main causes of motor leakage are: 1. Moisture intrusion or rain and water penetrate into the motor. 2. There is too much oil or other dirt on the winding. 3. The insulation of the incoming and...
The difference between the hydraulic directional control valve and the electromagnetic directional control valve is that the force that pushes the spool is different. The difference between the hydraulic directional control valve and the electromagnetic directional control valve is that the force that pushes the spool is different. The former is the hydraulic pressure of the pressure oil, the latter is the suction of the electromagnet, and the failure analysis and elimination method of the...
Metering pumps are widely used in petrochemical, chemical, power, water treatment, pharmaceutical and other industrial processes for the quantitative delivery of various types of chemical additives. In 1936, the world's first motor-driven metering pump was invented; in 1939, Larry Wilson invented the Wilson chemical feeding equipment-the world's first hydraulic-driven diaphragm metering pump; in 1963, invented the world's first electromagnet Driven metering pump-LMI; 1965, invented...
The motor overload protector can detect the current, voltage and stator coil temperature of the hydraulic oil pump motor. For example, if one of the three types does not work normally, the motor protector will act! These parameters need to be set. Today, Dalan Motor will share with you 10 essential protection principles. 1. Overload protection When the motor runs under its overload current for a long time and exceeds its rated current, it will cause the motor to overheat. The protector...
What is the role of the accumulator in the hydraulic system? Dalan Hydraulics will share with you from two aspects. What is the role of the accumulator in the hydraulic system? Dalan Hydraulics will share with you from two aspects. Role 1: Savings hydraulic energy 1 For intermittent load, the transmission power of the hydraulic pump can be reduced. a. When the hydraulic cylinder needs more oil, the accumulator and the hydraulic pump supply oil at the same time; b. When the hydraulic cylinder is...
I. Introduction Nowadays, hydraulic system is widely used in all kinds of machinery and equipment in various industries. As a transmission technology, hydraulic mode than the traditional mechanical methods, has the following advantages: 1, can produce great force, and easy to control; 2, in a wide range of continuously variable speed; 3, it is easy to prevent overload, Safety; 4, the size of small output, the installation location can be freely selected; 5, the output force of the control...
The so-called bearing clearance refers to the amount of movement of the bearing when it is not installed in the shaft or bearing box, and the inner ring or the outer ring is fixed, and then the bearing clearance is not fixed. . What effect does it have on the performance of hydraulic oil pump motors? The editor of Dalan Motor takes you to take a look. 1. Influence of bearing working clearance Bearing clearance is an important parameter in the use of motor bearings. If the working clearance is...
How does the high-pressure accumulator function in the high-pressure EH oil hydraulic system? Dalan Hydraulics will share with you. How does the high-pressure accumulator function in the high-pressure EH oil hydraulic system? Dalan Hydraulics will share with you. High-pressure accumulators are mainly used to balance line oil pressure fluctuations. Eg: When most of the system's oil motives are quickly turned on (for example, when the steam turbine starts to rush, two medium pressure...
I. Introduction Nowadays, hydraulic system is widely used in all kinds of machinery and equipment in various industries. As a transmission technology, hydraulic mode than the traditional mechanical methods, has the following advantages: 1, can produce great force, and easy to control; 2, in a wide range of continuously variable speed; 3, it is easy to prevent overload, Safety; 4, the size of small output, the installation location can be freely selected; 5, the output force of the control...
After disassembling a hydraulic oil pump motor, it was found that the grease in the motor bearing changed from milky white to silver gray. What caused this problem? Is the discoloration of bearing grease normal? What is the normal color of grease? The editor of Dalan Motor will answer all of them today. Grease discoloration in bearings is sometimes discolored even if it is not placed in the motor bearings. This is because: First, grease has oxidation problems. When the grease is placed (or...
Do you know which parts of the hydraulic system are made up? The following Dalan hydraulic system will explain to you. Do you know which parts of the hydraulic system are made up? The following Dalan hydraulic system will explain to you. The hydraulic system consists of a power component (oil pump), an actuator (cylinder or hydraulic motor), control components (various valves), auxiliary components and working medium. 1, power components (oil pump) Its function is to convert the liquid energy...
Hydraulic system when installing hydraulic pump 3 Notes: 1, hydraulic pump drive shaft and motor drive shaft concentricity deviation of less than 0.1MM, the general use of flexible coupling, not allowed to directly drive the V-axis with the shaft rotation , To prevent the pump shaft radial force is too large, affecting the normal operation of the pump; 2, the direction of rotation of the hydraulic pump and inlet and outlet should be installed as required; 3, various types of hydraulic pump...
When consulting new customers of Luke Heavy Industry's customer service, the key issue is whether the secondary structure column pump for hydraulic buildings is really easy to use, and how much is the price? In order to help customers better solve this doubt, Lu Xiaobian thoroughly asked the company's logistics department and technical department, and finally got the answer the customer wanted. Promise the editor, remember to really use the secondary structure column pump for hydraulic...
The hydraulic shock in the hydraulic pump station is difficult to avoid. The hydraulic shock refers to the sudden change of the pressure caused by the sudden change of the hydraulic oil in the hydraulic pump station. The hydraulic shock may damage some hydraulic components in the hydraulic pump station. The reason is that when a hydraulic shock occurs, the partial pressure may rise several times or several times in an instant. The hydraulic shock in the hydraulic pump station is difficult to...
Today, hydraulic systems are widely used in various industries and machinery. As a transmission technology, hydraulic mode than the traditional mechanical methods, has the following advantages: 1, can produce great force, and easy to control; 2, in a wide range of continuously variable speed; 3, it is easy to prevent overload, Safety; 4, the size of small output, the installation location can be freely selected; 5, the output force of the control simple and accurate, remote control. Although...
In the manufacturing process of the motor, the processing technology of the main parts occupies a very important position, which is related to the performance of the entire hydraulic oil pump motor. The following editor of Dalan Motor will introduce the impact of unprocessed parts on the motor. (1) The outer diameter of the rotor core is too small or the inner diameter of the stator core is too large, the axial offset between the stator and rotor core, and the magnetic permeability of the...
Due to improper use of the hydraulic system or component failure, the hydraulic system will heat up. Due to improper use of the hydraulic system or component failure, the hydraulic system will heat up. The specific causes and solutions for fever are detailed in the following four points: 1. The hydraulic oil level in the fuel tank is lower than the lowest liquid level, which reduces the heat dissipation power of the fuel tank. Solution: During the use, it is necessary to observe the oil level...
The axial ends of the hydraulic pump and the motor are generally not to bear the radial force. Do not install the transmission parts such as the belt pulley and the gear directly on the shaft of the pump or motor. However, in practice, there are not many examples of failures and economic losses due to structural constraints not being installed as required. For example, domestic static smooth steel roller steering gear pump, that is, through the tape drive and the engine connection. In another...
To measure the insulation resistance between each two-phase winding of the hydraulic oil pump motor and each group of windings and the casing, it is generally measured using a megohmmeter (shake meter). So how do we know the insulation performance and quality of the motor from the measurement results? Today, the editor of Dalan Motor will take you to get acquainted. 1. When using a megohmmeter to measure the insulation resistance, a 500-volt megohmmeter is usually used for motors with voltages...
The hydraulic system has the advantages of small size, light weight, high power, stable operation, stepless speed regulation, etc., and is widely used in various cranes. The hydraulic system has the advantages of small size, light weight, high power, stable operation, stepless speed regulation, etc., and is widely used in various cranes. However, the transmission efficiency of the hydraulic transmission system is lower than that of other transmission systems, which is prone to failure and the...
I. Introduction Nowadays, hydraulic system is widely used in all kinds of machinery and equipment in various industries. As a transmission technology, hydraulic mode than the traditional mechanical methods, has the following advantages: 1, can produce great force, and easy to control; 2, in a wide range of continuously variable speed; 3, it is easy to prevent overload, Safety; 4, the size of small output, the installation location can be freely selected; 5, the output force of the control...
The correct use and operation of the hydraulic oil pump motor is very important. When it comes to safety, everyone seems to understand it, and even disapproval, but safety is an eternal topic. Today, Dalan Motor Editor summarizes the points that need to be paid attention to during the use of the motor. (1) When moving the running motor, the power must be turned off in advance, and it must not be moved with electricity. (2) The power supply line of the motor must be installed regularly, and it...
The Dalan hydraulic motor reminds you that you should be prepared before disassembling the hydraulic cylinder. The Dalan hydraulic motor reminds you that you should be prepared before disassembling the hydraulic cylinder. The first step is to depressurize the hydraulic circuit. Otherwise, when the tubing joint with the cylinder is loosened, the high-pressure oil in the circuit will be quickly ejected. When the hydraulic circuit is relieved, first loosen the hand wheel or pressure regulating...
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Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.