机械专业英文介绍.ppt

1、介绍人：,Mechanical engineering introduction,Contents,Mechanical engineering major review,1,Mainstream mechanical product introduction,2,Hydraulic support introduction,3,Drawing hoist introduction,4,1.Mechanical engineering major review,The Mechanical Engineering major is designed to prepare students wi

2、th knowledge,problem solving ability,and hands-on skills to enter careers in the design,installation,manufacturing,testing,evaluation,technical sales,or maintenance of mechanical systems.,The mechanical engineering technologist makes significant contributions in supporting engineering design,testing

3、,production,research,and development operations in a wide variety of industrial,aerospace,and government organizations.we must complete the coursework in major requirements and electives.,1.Mechanical engineering major review,1.Mechanical engineering major review,Our main task is to use advanced des

4、ign theory and method of manufacturing technology,modern engineering fields to solve complex technical problems in order to achieve the design and manufacture of intelligent products.Operational management and business marketing and other aspects of the Advanced Technology Talents.,2.Mainstream mech

5、anical product introduction,Figure is a cutaway view showing the setup in a longwall face.Coal at the face is cut by either a shearer loader or a plow.The shearer loaders generally ride on the panline of an armored face conveyer(AFC),which is laid on the floor parallel to the face line.The shearer l

6、oader moves by means of a self-contained motorized tinch running along a static chain whose ends are anchored at the ends of the face near or at the five units of the AFC.In the recent models,the shearer loaders are self-propelled along a special track without the aid of the chain.Thus the AFC serve

7、s as the track for the cutting machine to move on and as a guide to hold the machine in place.,2.Mainstream mechanical product introduction,2.Mainstream mechanical product introduction,Modern longwall mining employs self-advancing hydraulic powered supports at the face aera.The support not only hold

8、s up the roof,pushes the face chain conveyor(AFC),and advances itself,but also provides a safe environment for all associated mining activities.,2.Mainstream mechanical product introduction,2.Mainstream mechanical product introduction,Introduction of sheaerCoal cut by the shearer or plow is loaded o

9、nto the AFC and transported to the headentry T-junction.It is now the major cutting machine in longwall coal faces.There are two types of shearers,single-and double-drum.,2.Mainstream mechanical product introduction,2.Mainstream mechanical product introduction,In longwall coal mining,thcoal cut down

10、 by the shearer or the plow is transported by the amored face chain conveyor(AFC),which is laid across the full face tidth,to the headentry T-junction,where it is transferred to the entry belt conveyor through the mobile stage loader.,2.Mainstream mechanical product introduction,2.Mainstream mechani

11、cal product introduction,Drawing hoist is a new type of mine auxiliary transportation equipment.It mainly used to dismantle and recycling mine stope face of blind mechanical equipment.,2.Mainstream mechanical product introduction,First:Introduction of hydraulic support,Hydraulic support（液压支架）as one

12、of the most important machine of coal mine machinery,plays an important role in ensuring the safety of the miners.By means of high pressure emulsion liquid（乳化液）,hydraulic support sustains the roof effectively.,Coal mine machineryhydraulic support,Second:The composition of the hydraulic support,There

13、 are 6 parts:top beam、shield beam、base、four-bar linkage、hydraulic support leg、thrust gear,Coal mine machineryhydraulic support,Third:The classification of the hydraulic support,chock-type,shield-type,chock-shield-type,Coal mine machineryhydraulic support,Fourth:working principle of the hydraulic sup

14、port,Here is a short movie about the working principle of the hydraulic support,which is based on my graduation project.,the motion simulation,Coal mine machineryhydraulic support,4.Drawing hoist(回柱绞车)introduction,Drawing hoist is a new type of mine auxiliary transportation equipment.,4.Drawing hois

15、t introduction,It mainly used to dismantle and recycling mine stope face of blind mechanical equipment.Traction big and traction speed slow is the main drawing hoist performance requirements.With the improvement of mechanized degree,it is more and more widely used in mechanization mining face,as ins

16、tallation,recycling of various equipment says spare parts.Drawing hoist except to drawing and caving,also can be used to work hauling and scheduling vehicles.,4.Drawing hoist introduction,Drawing hoist mainly consists of electric motor,coupling(联轴器),reducer,the drum device and electric hydraulic brake(电液制动器)etc.It can be divided into 4 parts:Electric motor（电动机）Reducer（减速器）Drum device（卷筒装置）Base（底座）Now,let me introduce the 4 parts one by one.,4.Drawing hoist introduction,Electric motor:It is the p