China Shandong Yizhi Machinery and Equipment Co., Limited Company News

our factory warmly welcomed a delegation of test bench customers from South Africa. This visit marked an important step in strengthening business cooperation and exchanges between our company and the South African market. The South African customers expressed great interest in our advanced production facilities and strict quality control system. During the visit, they were guided through the entire production process, from raw material selection to the final assembly of the test bench. Our professional technicians explained in detail the technical features and advantages of our products, which impressed the visitors deeply. The visit also provided an opportunity for in-depth communication and discussions. Both sides shared their experiences and insights in the field of test bench technology and explored potential cooperation opportunities. Our company is committed to providing high-quality products and services, and this visit has further enhanced the confidence of our South African customers in our capabilities. We believe that this visit will lay a solid foundation for future cooperation and promote the development of friendly business relations between our company and South African customers. We look forward to achieving more win-win results in the future.    

Hydraulic oil, once there is a problem with hydraulic oil, it can cause significant damage to the pump. Statistics show that 70% of hydraulic system problems are caused by hydraulic oil issues. The main problem is hydraulic oil contamination. Hydraulic oil is inevitably contaminated at all times. Why is that? You said you paid a lot of attention, but it still doesn't work. Yes, there is wear and tear on the rotating parts, and the worn particles have entered the hydraulic system. So observe the hydraulic oil frequently and filter and replace it immediately if it gets dirty. If the oil is dirty, take some oil with your hand and observe it in your hand. If there are iron particles or reflective spots, it is dirty. Filter the oil in the tank and see if it can be used. If it can be used, filter it out before use. Some hydraulic pumps are connected with a single key, so it is necessary to check if the key is loose. This is not only for pediatrics, but also for those who do not know. 1、 Hydraulic oil, once there is a problem with hydraulic oil, it can cause significant damage to the pump. Statistics show that 70% of hydraulic system problems are caused by hydraulic oil issues. The main problem is hydraulic oil contamination. Hydraulic oil is inevitably contaminated at all times. Why is that? You said you paid a lot of attention, but it still doesn't work. Yes, there is wear and tear on the rotating parts, and the worn particles have entered the hydraulic system. So observe the hydraulic oil frequently and filter and replace it immediately if it gets dirty. The second is the oil level in the fuel tank, which should be regularly monitored because once there is a shortage of oil, the hydraulic pump is not far from being damaged. Some people make fuel tanks without an oil level gauge for observation, so they don't know if there is oil, which can easily lead to system failures. The third is not to install filters. Many systems do not have filters, especially simple systems. Installing a filter is troublesome and it is not known where to place it. Therefore, at this time, it is necessary to observe frequently as mentioned above, and if there are no problems, it will be too late to come up with solutions. Precautions for installation of hydraulic joints Hydraulic maintenance is a thin tube shaped instrument used to measure the relative pressure of liquids. Used to monitor the infiltration line, seepage pressure, groundwater level, and seepage around the dam. Widely used in industries such as water conservancy, petroleum, chemical, engineering machinery manufacturing, coal mining, shipbuilding, aviation, automobiles, medical equipment, etc. When making a purchase, pay attention to the following tips. 1、 Check for rust. Some parts of the pressure measuring hose may rust, oxidize, discolor, deform, and age due to poor storage or prolonged storage. 2、 Look at the exterior packaging. The packaging of pressure measuring hoses for authentic products emphasizes quality. The products have undergone rust prevention, waterproofing, and anti-corrosion treatment, and are packaged in wooden boxes with the product name, specifications, model, quantity, and factory name clearly marked in a prominent position. 3、 Check if there is a product qualification certificate. The pressure measuring hoses are all inspected by the chemical product quality inspection station of the quality and technical supervision department and have been identified as qualified. They are allowed to produce and leave the factory with inspection certificates, instructions, and installation precautions. If not, they are mostly counterfeit and inferior products.  

  In terms of energy transfer, hydraulic technology is roughly in the middle position between mechanical energy transfer and electrical energy transfer. From the perspective of transmission characteristics, mechanical transmission and hydraulic transmission devices can be said to have fixed characteristics. On the contrary, hydraulic transmission devices are the same as electrical transmission devices and have the characteristics of continuously variable transmission devices. In addition to constant power, they are also easy to achieve characteristics such as constant speed and constant torque. The hydraulic technology characteristics of the hydraulic test bench can generally be summarized as follows: (1) Easy to perform continuously variable transmission, with a wide range of speed changes, allowing for easy adjustment of force and torque over a wide range; (2) Good control performance, that is, force, speed, position, etc. can be controlled correctly with high response speed. In addition, it has good adaptability to other control methods such as electrical and mechanical systems, especially when combined with electrical signal processing, which can achieve excellent response characteristics; (3) Reliable action and good operational performance;

when a hydraulic motor is working fine, why is the noise getting louder? I haven't done anything, "said Mr. Li, who came to Ausnutria to repair hydraulic motors. There are many reasons for the high noise of the hydraulic test bench motor, The reasons for the loud noise of hydraulic motors are: ① The seal is not tight, and there is air invading the interior ② The hydraulic oil is contaminated and there are bubbles in the stick ③ Oil temperature too high or too low ④ The coaxiality of the coupling exceeds the tolerance ⑤ Hydraulic oil drilling too large ⑥ The radial dimensions of the hydraulic motor are severely worn out ⑦ The blades are worn out ⑧ Poor contact between blades and stator, with collision phenomenon ⑨ Stator wear How to deal with the loud noise of hydraulic motors? This hydraulic motor is working fine, why is the noise getting louder? I haven't done anything, "said Mr. Li, who came to Ausnutria to repair hydraulic motors. There are many reasons for the high noise of the hydraulic test bench motor, The reasons for the loud noise of hydraulic motors are: ① The seal is not tight, and there is air invading the interior ② The hydraulic oil is contaminated and there are bubbles in the stick ③ Oil temperature too high or too low ④ The coaxiality of the coupling exceeds the tolerance ⑤ Hydraulic oil drilling too large ⑥ The radial dimensions of the hydraulic motor are severely worn out ⑦ The blades are worn out ⑧ Poor contact between blades and stator, with collision phenomenon ⑨ Stator wear Methods for eliminating loud hydraulic motor noise: ① Check the sealing of relevant parts and tighten all connections ② Replace clean hydraulic oil ③ Check the working condition of the temperature control components ④ Correction of coaxiality ⑤ Replace the oil with a lower viscosity ⑥ Grind the cylinder bore and reassemble the plunger ⑦ Repair or replace as much as possible

    Underspeed is a very taboo phenomenon in hydraulic systems. Not being fast doesn't mean it can't be used, it's just that it doesn't meet the system requirements and is difficult to troubleshoot, and there are many situations. Therefore, hydraulic maintenance personnel need to identify the cause and make corresponding selections. How to clean up. The following is a summary of underspeed by hydraulic maintenance personnel for our reference. 1. The adverse effects of lack of speed. There are two situations where the rotational speed of hydraulic equipment components (hydraulic cylinders and hydraulic motors) is too low: One reason is that the speed during high-speed motion (fast forward) is not fast enough to meet the design and specified values of the new equipment. The second issue is that the operating speed (operation progress) under load decreases significantly with the increase of load, especially for large hydraulic equipment and high load equipment. This phenomenon is particularly evident, and the speed is generally related to the flow velocity. The lack of speed first affects the production power and increases the cycle time of hydraulic equipment. The phenomenon of underspeed often stops working under heavy loads, affecting the normal operation of the equipment. Regarding equipment that requires high-speed movement, such as surface grinders, a lack of speed can affect the roughness of the ground. Solution to underspeed in hydraulic maintenance Underspeed is a very taboo phenomenon in hydraulic systems. Not being fast doesn't mean it can't be used, it's just that it doesn't meet the system requirements and is difficult to troubleshoot, and there are many situations. Therefore, hydraulic maintenance personnel need to identify the cause and make corresponding selections. How to clean up. The following is a summary of underspeed by hydraulic maintenance personnel for our reference. 1. The adverse effects of lack of speed. There are two situations where the rotational speed of hydraulic equipment components (hydraulic cylinders and hydraulic motors) is too low: One reason is that the speed during high-speed motion (fast forward) is not fast enough to meet the design and specified values of the new equipment. The second issue is that the operating speed (operation progress) under load decreases significantly with the increase of load, especially for large hydraulic equipment and high load equipment. This phenomenon is particularly evident, and the speed is generally related to the flow velocity. The lack of speed first affects the production power and increases the cycle time of hydraulic equipment. The phenomenon of underspeed often stops working under heavy loads, affecting the normal operation of the equipment. Regarding equipment that requires high-speed movement, such as surface grinders, a lack of speed can affect the roughness of the ground.