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introduction：A (machine)ZL40The loader had difficulties in starting during driving、Inability to travel、After braking, the left front wheel has a small amount of oil smoke and burnt smell after extinguishing。Check and find，The brake disc and the right friction plate are not completely separated，Right brake sub pump piston does not return。 ZL40The loader adopts dual pipeline pneumatic oil disc brake system。In disc brake7Be fitted with4A brake sub pump，Install in pairs。When the brake pedal is pressed down，Slave air compressorlThe high-pressure gas comes to drive the gas-liquid master pump4Gas piston，The gas piston then pushes the oil piston。The brake fluid enters the disc brake through the tubing
2015-01-08 Reading quantity 1570
introduction：Different lubricants are prohibited from mixing with each other。Oil level plug、The location of the drain plug and ventilator is determined by the installation position。Their relevant positions can be determined by referring to the installation position diagram of the reducer。 one、Check the oil level Cut off the power，Protection against electric shock！Wait for the reducer to cool！ Remove the oil level plug to check if the oil is full。 Install the oil level plug。 two、Inspection of oil Cut off the power，Protection against electric shock！Wait for the reducer to cool！ Open the oil plug，Oil sampling。 Check the viscosity index of oil ——If the oil is noticeably cloudy，Recommend replacement as soon as possible。 For speed reducer with oil level plug
2015-01-08 Reading quantity 2896
introduction：FAGbearing[FAGbearing:The main shaft bearing is made of a solid inner ring、Outer ring、The ball、And a single row angular contact ball bearing consisting of a cage assembly with a solid window cage。]In addition to excellent quality，Its a very sophisticated part，Both high performance bearings，If used improperly in the course of use，Not only can not achieve the expected performance effect，And it is easy to damage the bearing，Everyone must have been paying attention to lubrication。Besides lubrication，FAGbearing[FAGbearing:The main shaft bearing is made of a solid inner ring、Outer ring、The ball、And a single row angular contact ball composed of a cage assembly with a solid window cage
2015-01-08 Reading quantity 1469
introduction： SKFbearing[SKFbearing:SKFThe full name is“Svenska Kullager-Fabriken”The Chinese transliterated name is“SKF”；SKFThe group is headquartered in Gothenburg, Sweden，Is a leader in bearing technology and manufacturing。SKFBearings can be divided into sliding according to different specific structures and similarities and differences in working propertiesSKFBearing and rollingSKFbearing]Measurement error，tolerable10％below。The general measurement error of the combat merit difference10％～33％，And as the tolerance level increases，The greater the proportion of error，The smaller the tolerance，By mistake
2015-01-08 Reading quantity 1580
introduction：Lubrication is very important，Not only forTIMKENbearing[bearing:bearing（“Bearing”，Japanese person“Axial receptor”）It is a part that holds and reduces the friction coefficient of load during mechanical transmission。Can also be said，When other parts move relative to each other on the shaft，A device used to reduce the coefficient of friction during power transmission and to keep the center of the shaft fixed。]，Also for all bearings。But please note， Bearing should not add too much grease。Then its just a matter of changing the lubricant for the bearing。Use oil lubricated bearings after removing the old oil，If you can，It should be refilled with fresh
2015-01-08 Reading quantity 1549
introduction： There are two important points to grasp when buying used machine tools，namely： ① According to their own use requirements，Accurately assess the residual use value of used machine tools。 ② Old machine tools are prone to failure、Precision degradation、Loss of operational reliability，Repair and replacement of worn and aging parts，So have experience with CNC machine tools，There should be comprehensive technical support for maintenance of old machine tools。 The above two conditions are sometimes difficult to use pure units when both，You can choose to cooperate with professional and technical units。 CNC machine tools have been in manufacturing for decades
2015-01-08 Reading quantity 2794
introduction： Daily care of electric forklift 1、Brake fluid、Water quantity inspection：Check that the brake fluid is within the scale range，And check whether the brake pipe is mixed with air。When the brake fluid is added，Dust protection、Water mixing。When adding water to the tank，Just use clean tap water，If antifreeze is used，The same antifreeze should be added。Water temperature above70℃when，Do not open the tank lid，When you open the lid，Put a thin cloth on it，Do not twist the tank cover with gloves。 2、Clean the dirt on the forklift、Dirt and dirt，The key position is：fork
2015-01-08 Reading quantity 2802
introduction：Since the transverse thickness difference and the shape of the strip are mainly determined by the shape of the actual roll gap during rolling，Therefore, it is necessary to study the factors affecting the actual roll gap shape，Based on this, the original shape of the roll is reasonably designed。 The main factors affecting the shape of the roll gap are elastic deformation of the roll，Uneven thermal expansion of rolls and wear of rolls。 1．Uneven thermal expansion of a roll The heating and cooling conditions of the roll are not uniformly distributed along the roll body。On most occasions，The temperature in the middle of the roll body is higher than the edge（But sometimes the opposite happens），And generally the roll temperature on the drive side is slightly lower than that on the operating side。
2015-01-08 Reading quantity 1451
introduction： The construction of urban subway project is carried out by shallow excavation under the bridge，Construction is difficult and risky。With the construction and vigorous development of urban subway in our country，These projects will become more numerous and even inevitable，How to ensure the safety of construction and bridge during construction，In recent years, it has become a practical problem of common concern in the academic and engineering circles。In view of this，Targeting Heping Xiqiao Station of Beijing Metro Line 5～The actual project of crossing Sakura West Bridge under the section tunnel of Hotoseong East Road Station，With the help ofABAQUSsoftware，The foundation of the bridge was built-Three-dimensional finite element model of tunnel surrounding rock interaction，The underground tunnel construction process is simulated
2015-01-08 Reading quantity 2905
introduction：The technical level and modernization degree of the equipment industry determine the level and modernization degree of the entire national economy，Numerical control technology and equipment is the development of new high-tech industries and cutting-edge industries（Such as information technology and its industries、Biotechnology and its industries、aviation、Aerospace and other national defense industries）The enabling technology and the most basic equipment。Marx once said“The difference between different economic eras，Its not about producing what，But how do you produce it，What means of labor are used in production”。Manufacturing technology and equipment are the most basic means of production of human production activities，Numerical control technology is the core technology of advanced manufacturing technology and equipment。nowadays
2015-01-08 Reading quantity 2887
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