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1、精选优质文档-倾情为你奉上The winchThe winch is also known as the winch, mainly used in construction, water conservancy engineering, forestry, mining, terminals and other material lifting or flat mop. A winding drum is used for winding wire ropes or chains to enhance or draft light small lifting equipment.Winch

2、has the following characteristics: high versatility, compact structure, small volume, light weight, great. The use of convenient transfer, is widely used in construction, water conservancy engineering, forestry, mining, terminals and other material lifting or flat mop, also can make the modern autom

3、atic production line equipment. There are 0.5 tons to 350 tons, divided into fast and slow two. Among the above 20 tons of large tonnage winch, the winch can be used alone, can also be used as lifting, road and the mine lifting and other machinery components, because has the advantages of simple ope

4、ration, large quantity, convenient winding displacement and wide application. Winch main technical indicators have rated load, load, rope speed, Rong Sheng etc. The use of convenient transfer, is widely used in construction, water conservancy engineering, forestry, mining, terminals and other materi

5、al lifting or flat mop, also can make the modern automatic production line equipment. There are 0.5 tons to 350 tons, divided into fast and slow two. Among the above 20 tons of large tonnage winch, the winch can be used alone, can also be used as lifting, road and the mine lifting and other machiner

6、y components, because has the advantages of simple operation, large quantity, convenient winding displacement and wide application. Winch main technical indicators have rated load, load, rope speed, Rong Sheng etc.Winch according to power is divided into manual, electric, hydraulic three class. From

7、 the use of classification can be divided into building winch and marine winch. Winch according to the function can be divided into: Marine winch, winch, winch in mine engineering, cable winch. According to the web form is divided into single and double drum reelAccording to the distribution form of

8、 the reel drum and before and after the double drum winch, special symbols with frequency conversion winch, double drum winch, handbrake lever type double brake winch, with restrictor winch, electric winch, electric winch brake clutch, large double cylinder double brake winch, a large gear winch, hy

9、draulic winch, large external gear belt rope guider winch, a traction wheel winch, hydraulic double cylinder double brake winch, winch frequency band limiter.Manual winch handle rotary drive mechanism is provided with a stopping device ( a ratchet and pawl ), can be maintained in the desired positio

10、n. Assembly or lifting heavy with manual winch should also set safety handle and brake. Manual winch in weight is small, infrastructure condition is poorer or the place without power. Electric winch is widely used for heavy work and need for traction force larger venues. Single drum winch drum is dr

11、iven by the motor speed reducer, motor and the input shaft of the reducer is arranged between the brake. In order to adapt to the lift, traction and rotary operation needs, and double drum and drum winch. General load rating less than 10T winch can be designed into electric winch.The hydraulic winch

12、 is rated load large winch, in general more than 10T to 5000T design into a hydraulic winch. Its structure is mainly composed of a hydraulic motor ( high and low speed hydraulic motor ), normally closed multi-disc brake, planetary gearbox, clutch ( optional), reel, a supporting shaft, a rope pressin

13、g device, ( optional). The hydraulic motor has high mechanical efficiency, big starting torque, and according to the requirements of working conditions with different distributor, can also be based on user need to design valves directly integrated in motor oil distributor, such as belt balance valve

14、, valve shuttle valve, pressure overload, speed control valve or other properties of the valve, brake, planetary gear box are installed directly on the drum, drum, the support shaft, frame according to the mechanical requirements of the design, the whole structure is simple and reasonable and has su

15、fficient strength and rigidity. Thus the series winch has compact in structure, small volume, light weight, the characteristics of beautiful appearance, performance, good security, high efficiency, big starting torque, low speed stability, low noise, reliable operation and other characteristics. It

16、is worth mentioning that the hydraulic motor with high volumetric efficiency and the United States of America SUN company quality balance valve solves the winch has the two decline and empty hook chattering phenomenon, which makes the series hydraulic winch lifting, transfer to a lower level and smo

17、oth braking process, clutch winch can realize free release. Installed in the valve plate on the integrated valve block is effectively simplifies the user's hydraulic system. As the series winch has the advantages, it is widely used in ships, engineering machinery, railway, petroleum, geology, me

18、tallurgy and other industries, its excellent performance has been recognized by the user. Example: installed on helicopters, rescue equipment, main function is to people or things up, down, its own power, can control the helicopter in hover, maintain high, through the hand winch control retractable

19、cable will lift down the person or thing.Winch must be under the circumstance of safety use. In 1, a winch must be standardized requirements set. Its specifications clear height of not less than 2 meters width of 2.4 meters, 2 meters deep into the net. The roadway along goaf roadway tunnel according

20、 to the actual situation, in does not affect the safe operation principle. 2, as far as possible using the pneumatic driving winch construction, according to the different types of supporting roadway with wood shed or steel roof support. Roof intact when the anchor net support, broken roof using the

21、 shelf supporting 3, 11.4KW small winch foundation are to be used in concrete pouring, the basic specifications for 1 x 1 x 1 meters. Concrete cement, sand, stones ( melon slice ) with ratio of 1: 2: 2; the water cement ratio of 0.4. In 4, the winch shed supporting, should from outward by frame shed

22、s, is used between the brace or rod as a whole, waist, help to meet strict back. Shed distance does not exceed 0.7 metres. The anchor net support, anchor of the row spacing of 800 x 800mm. In 5, the winch motor should be installed in the small winch fossa side, operating space distance of not less t

23、han 0.8 meters; the operation button switch on, neatly and shall not hinder the personnel to operate. 6, other operating in accordance with the relevant provisions of the rules.In the later, crane word entered the human eye. Overhead bridge crane is a bridge in the orbit of a bridge type crane, also

24、 known as crane. Bridge crane bridge laying on both sides along the elevated track on the vertical run, lifting trolley along the bridge on the laying of the track in the horizontal run, the scope of work constitutes a rectangle, you can take full advantage of the lifting bridge the space below the

25、material, the hindered from ground equipment.Bridge crane widely used in indoor and outdoor storage, factories, docks and outdoor storage yard. Bridge crane bridge crane can be divided into general bridge crane, simple beam bridge crane and metallurgical three special bridge crane. General by the ge

26、neral bridge crane lifting trolley, bridge run organization, structure and composition of metal bridge. The crab by the hoisting mechanism, a carriage running mechanism and a trolley frame is composed of three parts. The lifting mechanism comprises a motor, brake, reducer, drum and pulley blocks. Mo

27、tor through reducer, drives the drum to rotate, so that the rope around the drum or from the roll down, to lift heavy objects. The trolley frame is a support and installation of lifting mechanism and operation of institutions such as car chassis components, usually welded structure.Crane's opera

28、tion mechanism driving method can be divided into two categories: one category for centralized drive, which uses an electric motor to drive the long drive shaft to drive the active wheel of both sides; another kind is respectively drive, namely active on both sides of the wheels with a motor driver.

29、 In small bridge crane, more use of brake, reducer and motor are combined into one of the" three in one" drive, great weight of general overhead traveling crane for ease of installation and adjustment, adopt universal shaft driving device.Crane operation is generally only used four driving

30、 and driven wheels, if the great weight, commonly used to increase the wheel to reduce the wheel pressure. When the wheel is more than four, must use articulated balance frame device, so that the crane load uniformly distributed on each wheel.Bridge structure of the metal by Lord Liang Heduan beam c

31、omposition, divided into single beam bridge and double beam bridge of the two kind. Single beam bridge by a single main beam and is located to span on both sides of the end beam, double beam bridge consists of two main Liang Heduan beam.Main girder and end girder rigid connection, end beam with both

32、 ends of the wheel, in order to support the bridge in an elevated running. The main beam is welded on the track, for lifting trolley. Bridge main beam structure type is more typically the box structure, the four truss structure and Vierendeel truss.Box structure can be divided into track double box

33、girder, bias rail box double beam, bias rail box single beam of. Track double box beam is widely used in a basic form, main beam, the lower flange plate and both sides of the vertical web component, trolley rail are arranged in the upper flange of the center line, it has the advantages of simple str

34、ucture, convenient manufacture, is suitable for batch production, but the large self-weight.Bias rail box double beam and the bias rail box single beam section is composed of an upper, lower flange plate and the vice principal of unequal thickness of web component, trolley rail is arranged in the ma

35、in web.Four truss frame structure by four plane trusses are combined into a closed space structure, in the horizontal truss surface generally paved with walking board, light weight, high rigidity, but comparing with other structure, large size, manufacturing complex, a low fatigue strength, has less

36、 production.Vierendeel truss structure similar to bias-rail box main girder, composed of four pieces of steel plate to form a closed structure, in addition to the main web for solid abdominal I-shaped beam, the remaining three pieces of steel plate according to the requirement of the design cut into

37、 many windows, forming a diagonal rod vierendeel truss, the horizontal truss under surface, paved walking board, crane traveling mechanism and electrical equipment installed in the tray, lighter weight, integral rigidity, which in China is relatively widespread adoption of a type.General bridge cran

38、e is mainly driven by electric power, generally in the driver room, also has a remote control. Lifting capacity up to five hundred tons, the span of up to 60 meters. Simple beam bridge crane and bridge type crane, its structure and the general bridge crane lifting weight, similar, span and working s

39、peed are small. Bridge main beam is made of steel or other type of steel and steel plate composed of simple girder with electric hoist, NRK hyacinth or with simple car as the lifting trolley, trolley generally I-shaped beam flange under running. Bridge along the elevated track on the operation, but

40、also along the suspension in the elevated track following operation, the crane called suspension beam crane. I will be driven by advances in information and computer technology. Our challenge is to ensure that new information, safety, and automation technologies are integrated to create human-center

41、ed intelligent vehicles that can advance safety, surface transportation efficiency, and economic competitiveness.外文资料翻译译文绞车绞车又称为卷扬机,主要运用于建筑、水利工程、林业、矿山、码头等的物料升降或平拖。是用缠绕或以或重物的轻小型起重设备。绞车具有以下特点:通用性高、结构紧凑、体积小、重量轻、起重大。使用转移方便,被广泛应用于建筑、水利工程、林业、矿山、码头等的物料升降或平拖,还可作现代化电控自动作业线的配套设备。有0.5吨350吨,分为快速和慢速两种。其中高于20吨的为大

42、吨位绞车,绞车可以单独使用,也可作为起重、筑路和矿井提升等机械中的组成部件,因操作简单、绕绳量大、移置方便而广泛应用。绞车主要技术指标有额定负载、支持负载、绳速、容绳量等。使用转移方便,被广泛应用于建筑、水利工程、林业、矿山、码头等的物料升降或平拖,还可作现代化电控自动作业线的备。有0.5吨350吨,分为快速和慢速两种。其中高于20吨的为大吨位绞车,绞车可以单独使用,也可作为、筑路和提升等机械中的组成部件,因操作简单、绕绳量大、移置方便而广泛应用。绞车主要技术指标有额定负载、支持负载、绳速、等。绞车按照动力分为手动、电动、液压三类。从用途上分类可分为建筑用绞车和船用绞车。绞车按照功能可以分为:

43、船用绞车、工程绞车、矿用绞车、电缆绞车等等。按照卷筒形式分为单卷筒和和双卷筒。按照卷筒的分布形式有并列双卷筒和前后双卷筒,特殊符号的绞车有变频绞车,双筒绞车,手刹杠杆式双制动绞车,带限位器绞车,电控绞车,电控手刹离合绞车,大型双筒双制动绞车,大型外齿轮绞车,大型液压绞车,大型外齿轮带排绳器绞车,双曳引轮绞车,大型液压双筒双制动绞车,变频带限位器绞车。手动绞车的手柄回转的上装有停止器(和),可使重物保持在需要的位置。装配或提升重物用的手动绞车还应设置安全手柄和。手动绞车一般用在起重量小、设施条件较差或无电源的地方。电动绞车广泛用于工作繁重和所需牵引力较大的场所。单卷筒电动绞车的电动机经带动卷筒,

44、与减速器输入轴之间装有制动器。为适应提升、牵引和等作业的需要,还有双卷筒和多卷筒装置的绞车。一般额定载荷低于10T的绞车可以设计成电动绞车。液压绞车主要是额定载荷较大的绞车,一般情况下10T以上到5000T的绞车设计成液压绞车。其结构主要由液压马达(低速或高速马达)、液压常闭多片式制动器、行星齿轮箱、离合器(选配)、卷筒、支撑轴、机架、压绳器(选配)等组成。液压马达具有很高的机械效率,起动扭矩大,并可根据工况要求带不同的配流器,还可根据用户需要设计阀组直接集成于马达配油器上,如带平衡阀、过载阀、高压梭阀、调速换向阀或其他性能的阀组,制动器、行星齿轮箱等直接安装于卷筒内,卷筒、支撑轴、机架根据力

45、学要求设计,整体结构简洁合理并具有足够的强度和刚性。因而该系列绞车在结构上具有紧凑、体积小、重量轻、外形美观等特点,在性能上则具有安全性好、效率高、起动扭矩大、低速稳定性好、噪音小、操作可靠等特点。值得一提的是液压马达高的容积效率和美国SUN公司优质的平衡阀解决了一般绞车都存在的二次下滑和空钩抖动现象,使得该系列液压绞车的提升、下放和制动过程平稳,带离合器的绞车还可实现自由下放。安装于配流盘上的集成阀组则有效地简化了用户的液压系统。由于该系列绞车具备上述优点,使其广泛应用于船舶、铁路、工程机械、石油、地质勘探、冶金等行业,其优良性能得到了用户的认可。例:安装在直升机上的救援设备,主要功用是将人或物吊起、放下,自有动力,可控制,直升机在保持高度悬停时,通过绞车手的控制可收放钢索将人或物吊起放下。绞车必须在安全的情况下使用。(1)绞车必须按规范要求进行设置。其规格净高不低于2.0米净宽为2.4米,净深为2.0米。沿空送巷巷道根据巷道的实际情况而定,以不影响安全操作为原则。(2)绞车施工尽可能采用风镐掘进,根据巷道的不同支护型式可采用木棚或工字钢棚支护。顶板完好时采用锚网支护,顶板破碎时采用架棚支护。(3)11.4KW小绞车基础均要采用砼浇注,其基础规格为1.0×1.0×1.0米。砼中水泥、黄沙、石子(瓜子片)的配合比为1:2

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