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introduction： A rotating lifting device(Rotating part)A boom type crane mounted on a portal mount。portal-mounted4Leg formation4a“Door opening”﹐It can be used by railway cars and other vehicles。Gantry cranes mostly operate along crane tracks on the ground or on buildings﹐Carry out lifting and loading operations。Portal seat“ ”A zigzag crane is called a half gantry crane﹐One side of its orbit is on the ground﹐The other side is on a building above ground level。 Brief history Gantry crane is developed with the development of port business。1890years﹐The first will be amplitude immutable solid
2015-04-21 Reading quantity 2805
introduction：NSKbearing[NSKbearing:Seiko Co., LTD（NSK LTD.）Be established in1916years，It is the first manufacturer to design and produce bearings in Japan。NSKThe function of the bearing fit is to makeNSKThe stationary ring and rotating ring of the bearing are respectively the stationary part of the installation part(Usually a bearing seat)And rotating part(Usually an axis)Solidify together，Thus, the basic tasks of transferring the load in the rotating state and defining the position of the moving system relative to the stationary system are realized。]The specific judgment method of whether repair should be reported，namelyNSKbearing[NSKbearing:Seiko Co., LTD（NSK LTD
2015-04-21 Reading quantity 1541
introduction：Plain bearing[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。]Early damage is much more common than bearing burnout，Therefore, it is very important to prevent early damage to plain bearings。The correct maintenance of plain bearings is an effective way to reduce the early damage of bearings，It is also a reliable guarantee to extend the bearing life。therefore，In the routine maintenance and repair of the engine，Must pay attention to the axis
2015-04-21 Reading quantity 1539
introduction：81：What are the equipment work before gas cutting？ a：Site ready，Check the cutting oxygen flow line(Immediate wind line) 82：What is the preheating flame energy rate？ a：It is a unit expressed in the amount of combustible gas consumed per hour。 83：Preheating flame can be divided into several types？a：Neutral flame、Carbonizing flame、Oxide flame。 84：What is tempering？ a：When cutting, the nozzle is blocked or acetylene due to overheating or splashing of iron oxide slag When the supply is not timely, the mouth will burst and temper。 85： What method should be taken to temper？ a：The preheating oxygen should be turned off quickly
2015-04-20 Reading quantity 2875
introduction： 1、With regard toKOYObearing[KOYObearing:kOYOBearings are generally required to bear large loads，Often without a cage，Instead, fill the inner and outer raceways with rolling elements。And most small and medium-sizedKOYORolling bearings are equipped with retainers。 inKOYOBearing in the processing process，The outer ring of the bearing、Inner ring、How do the roller and cage fit together。]Size limitation。 usualKOYObearing[KOYObearing:kOYOBearings are generally required to bear large loads，Often without a cage，But inside
2015-04-20 Reading quantity 1457
introduction： Cut off the rough and fine car by boring the outer round Workpiece diameter range（mm） Spindle speedn(r/min) Feed quantityf(mm/r) Spindle speedn(r/min) Feed quantityf(mm/r) Principal axis
2015-04-20 Reading quantity 2910
introduction： influenceSKFbearing[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]There are two main factors of grinding metamorphic layer，Respectively areSKFbearing[SKFbearing:SKFThe full name is“Svenska Kullager-Fabriken
2015-04-20 Reading quantity 1451
introduction： 1，bearing[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。]The cleaning of Remove lower inlet bearing[Imported bearing:Simply put, the import bearing agent refers to the sale of an imported bearing brand。The main brands of imported bearings arenskbearing，ikobearing，fagbearing，Of good quality，Of course, the price is not cheap。]overhaul
2015-04-20 Reading quantity 1455
introduction： Equipment management in a broad sense is the planning of equipment according to certain policies﹑design﹑Install﹑Use﹑repair﹑transform﹑System management of the whole process of renewal and scrapping。Equipment management in a narrow sense refers to the management from the purchase of equipment to the end of the scrap。In order to improve the technical, economic and social benefits of equipment management﹐The equipment management of modern machinery industry adopts modern management theory(See management engineering)﹑Fault physics﹑Reliability engineering and maintainability engineering and other scientific theories﹐And make the device tube
2015-04-20 Reading quantity 2814
introduction： Corrosion is produced，Not only affect the accuracy and surface roughness，It also reduces the service life，Or even scrapped and unusable。 bearing[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。]Rust prevention is an important work，Especially rust prevention between processes，Like bearings in the heat treatment workshop after pickling、cleanse、grinding
2015-04-20 Reading quantity 1556
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