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First, the introduction Today, hydraulic systems are widely used in various industries and machinery. As a transmission technology, the hydraulic method than the traditional mechanical methods, has the following advantages: 1, can produce a lot of power, but also easy to control; 2, in a wide range of continuously variable speed; 3, it is easy to prevent overload, safety; 4, small size, large output, the installation location is free to choose; 5, the output force control is simple and...
Silicon steel sheet is the main and key raw material for the production of hydraulic oil pump motors. The higher the grade, the lower the iron loss value, the better the performance, and the higher the magnetic induction strength under a strong magnetic field, the role of saving silicon steel sheets, copper wires and insulating materials . The following editor of Dalan Motor will introduce you to the performance of silicon steel sheet. First, distinguish cold-rolled and hot silicon steel sheets...
Features of open hydraulic system and closed hydraulic system Comparison of closed hydraulic system: 1. At present, the closed-type hydraulic system variable pump is an integrated structure. The charge pump and the oil-filling, overflow, and control valve groups are integrated into the hydraulic pump, which makes the pipe connection simple, which not only reduces the installation space, but also It reduces the leakage and pipeline vibration caused by the pipeline connection, improves 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 torque of the hydraulic oil pump motor is the power of the motor rotation. The main sources of torque fluctuations are: torque current fluctuations, cogging torque, processing technology and so on. The following editor of Dalan Motor will explain to you the harm of torque fluctuation and how to improve this phenomenon. 1. The harm of torque fluctuation: (1) Large noise The harmfulness of noise mainly depends on the frequency, intensity and exposure time of the noise. Noise not only...
The open hydraulic system means that the hydraulic pump 1 draws oil from the oil tank 5, and supplies oil to the hydraulic cylinder 3 (or hydraulic motor) through the reversing valve 2 to drive the working mechanism, and the oil return of the hydraulic cylinder 3 (or hydraulic motor) is reversed. Valve back to the tank. Install the relief valve 4 at the pump outlet. This system structure is relatively simple. The open hydraulic system means that the hydraulic pump 1 draws oil from the oil tank...
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 shaft break of the hydraulic oil pump motor occurs at the root of the shaft extension and at the root of the bearing at the shaft extension. If the motor has a shaft fracture phenomenon, macroscopic observation and microscopic analysis of the shaft fracture surface should be performed to find out the location and cause of the fracture crack source. The following Dalan motor editor will take you to learn this knowledge. The fracture surface of the shaft is in the transition fillet area (the...
How to choose the seal of the hydraulic pump? Dalan Hydraulics reminds you that the hydraulic pump seal has a certain degree of flexibility. How to choose the seal of the hydraulic pump? Dalan Hydraulics reminds you that the hydraulic pump seal has a certain degree of flexibility. The axial and radial movement of the spindle requires a certain degree of flexibility with the spring to ensure a seal between the contact faces. The mechanical condition of the hydraulic pump and its length to...
[Asia pump network] grid voltage changes, the load changes, its own pressure fluctuations and flow pulsation can cause hydraulic pump noise and vibration. Fluctuations in the grid voltage cause pulsations in the hydraulic pump, causing the pump outlet and line pressure to fluctuate, which is caused by external causes of fluid flow and pressure fluctuations. Hydraulic pump hydraulic system noise and vibration and eliminate the pressure of the trapped oil zone impact, hydraulic pump can also...
The stator core is formed by laminating thin silicon steel sheets coated with insulating paint on the surface. Since the silicon steel sheets are thin and insulated between the sheets, the core eddy current loss due to the passage of alternating magnetic flux is reduced. Today, the editor of Dalan Motor specifically introduces the insulation effect of each silicon steel sheet of hydraulic oil pump motor. 1. The silicon steel sheet itself is also an electrical conductor. Under the action of AC...
How can I effectively prevent the hydraulic pump from leaking? Dalan Hydraulics tells you the key to choosing the right hydraulic pump leak. How to do it? And look at the analysis of Dalan Hydraulics! Mechanical seals use the principle of two planes rubbing against each other to achieve the purpose of sealing. The rotating sealing surface is mounted on the main shaft of the liquid pump, and the fixed sealing surface is mounted in the sealing gland. Since one sealing surface is moving and the...
The most widely used hydraulic pump applications are the hydraulic piston pump and hydraulic jet pump, both of which are used in oil pumping units, but the working principle is different, to understand that the hydraulic Pumps are better for your use, and you need to start by understanding how they work. Hydraulic piston pump is a hydraulically driven rodless pumping unit. It consists of ground pump group, wellhead equipment and pipeline systems, water jacket furnace, sedimentation tank and...
The iron core is an important and key part of the hydraulic oil pump motor. When the iron core is loose, there will always be some punching pieces or the aforementioned end plate tuning fork that compresses the iron core oscillates under the action of electromagnetic force, and emits such noise. Today, the editor of Dalan Motor has made a special interpretation of the problem of loose iron core. 1. Why does the iron core loosen? During the operation of the motor, the iron core punching sheet is...
What is the specific function of the hydraulic control check valve? Let Dalan Hydraulics tell you! What is the specific function of the hydraulic control check valve? Let Dalan Hydraulics tell you! The role of the hydraulic control check valve is as follows: 1. Keep the pressure slide valve type reversing valve with gap leakage phenomenon, which can only keep pressure for a short time. When there is pressure requirement, a hydraulic control check valve can be added to the oil circuit to make...
[Asian Fluid Network News] Manual hydraulic pumps and electric hydraulic pumps are relatively high frequency of use of equipment, so what is the difference between the two? What impact will these differences have on production and life? These issues have always been the focus of attention. The difference between manual hydraulic pump and electric hydraulic pump Manual hydraulic pump as a simple and convenient hydraulic power source is widely used in shipbuilding industry, coal mining machinery,...
The noise of hydraulic oil pump motor can be basically summarized as electromagnetic noise, mechanical noise and ventilation noise, but how to distinguish various noises requires long-term experience accumulation. The editor of Dalan Motor mainly elaborated on electromagnetic noise suppression today. 1. Slot matching selection For asynchronous motors, we must first select the appropriate number of stator and rotor slots. Generally speaking, the difference between the number of rotor slots and...
The application of hydraulic transmission is common, but the characteristics of the hydraulic transmission itself and the heat generated by the engineering hydraulic system are usually insufficient by the heat dissipation of the fuel tank, components and the surface of the pipe. However, ensuring the effective control of the hydraulic oil temperature is the basic premise of the normal operation of the system, so the dedicated cooling device and the corresponding cooling circuit are essential in...
Hydraulic pump or hydraulic motor flow and displacement (1) Displacement displacement refers to the hydraulic pump or hydraulic motor shaft per revolution of the seal volume changes in the volume calculated from the volume of the liquid discharged, with V, the unit cm3 / r. Displacement depends on the hydraulic pump or hydraulic motor seal volume changes in the size of the size (regardless of speed). (2) Flow rate ① Theoretical flow qt: Volume of liquid discharged (or sucked in) calculated by...
The bearing in the hydraulic oil pump motor generates heat, which causes the grease to dilute and leak, and the bearing damages the bearing, causing economic losses to the user. Today, the editor of Dalan Motor made a brief introduction to the cause of bearing heat and the countermeasures. Causes of bearing heating and countermeasures: (1) If the bearing of the motor in operation has been damaged, it may cause the motor bearing to overheat. The ball of the bearing or the bearing bush of the...
The leakage of hydraulic joints during the installation of the hydraulic system is difficult to avoid. Dalan Hydraulics hereby reminds you that in the subsequent inspection or repair and replacement, you should pay attention to the following 10 points, otherwise it may cause unpredictable serious consequences. The leakage of hydraulic joints during the installation of the hydraulic system is difficult to avoid. Dalan Hydraulics hereby reminds you that in the subsequent inspection or repair and...
The pressure of positive displacement hydraulic pump and hydraulic motor (1) Rated pressure pn The rated pressure of hydraulic pump refers to the maximum pressure that can be continuously operated according to the test standard under normal working conditions. Hydraulic motor rated pressure refers to the continuous operation within the specified speed range, and to ensure the design of the life of the maximum input pressure. Its value by the hydraulic pump and hydraulic motor structure,...
Only by accurately identifying the noise source of the hydraulic oil pump motor can we take appropriate measures to solve the problem symptomatically. The editor of Dalan Motor combined with the actual work to introduce a few methods to identify the main noise sources, to share with you! 1. Motor noise identification method: (1) Power-off method Using the characteristics of electromagnetic noise that varies with the strength of the magnetic field, the size of the current, and the level of...
How does the hydraulic motor work? Are you clear? Please follow the steps of the Dalan hydraulic engineer to analyze. How does the hydraulic motor work? Are you clear? Please follow the steps of the Dalan hydraulic engineer to analyze. Hydraulic motors and hydraulic pumps are both reversible hydraulic components and are the source of power for mechanical equipment "target=_blank> machinery. Not only do the two work the same, but the work is connected to each other. The input of working...
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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.