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在科学上面是没有平坦的大路可走的，只有那在崎岖小路的攀登上不畏劳苦的人，才有希望到达光辉的顶点。
On science is no royal road to go, only that the fatiguing climb of its steep paths and a chance of gaining its luminous summits.
行车配件运行机构一般只用四个主动和从动车轮，如果起重量很大，常用增加车轮的办法来降低轮压。当车轮超过四个时，必须采用铰接均衡车架装置，使起重机的载荷均匀地分布在各车轮上。桥架的金属结构由主梁和端梁组成，分为单主梁桥架和双梁桥架两类。单主梁桥架由单根主梁和位于跨度两边的端梁组成，双梁桥架由两根主梁和端梁组成。主梁与端梁刚性连接，端梁两端装有车轮，用以支承桥架在高架上运行。主梁上焊有轨道，供起重小车运行。桥架主梁的结构类型较多比较典型的有箱形结构、四桁架结构和空腹桁架结构。箱形结构又可分为正轨箱形双梁、偏轨箱形双梁、偏轨箱形单主梁等几种。
Crane accessories operating agencies normally just four driving and driven wheels, if the weight is very big, commonly used to increase the wheel to reduce wheel pressure. Must be used when more than four wheels articulated balanced frame device, make the crane load evenly distributed on each wheel. Metal structure of the bridge is composed of main girder and end beam, divided into the single main girder bridge and double beam bridge frame. Single by single girder main girder bridge frame and located at the end on both sides of the span of beam, double girder frame is composed of two main girder and end beam. Main girder and end beam, rigid connection on both ends of the beam is equipped with wheel, to supporting bridge in an elevated running on. Girder welding has the track, for lifting the car running. The structure of the bridge girder type more than four typical box-type structure, truss structure and vierendeel truss structure. Can be divided into the right box box structure double beam, partial rail box double beam, partial rail box girder of the single to wait for a few kinds.
行车配件的正轨箱形双梁是广泛采用的一种基本形式，主梁由上、下翼缘板和两侧的垂直腹板组成，小车钢轨布置在上翼缘板的中心线上，它的结构简单，制造方便，适于成批生产，但自重较大。偏轨箱形双梁和偏轨箱形单主梁的截面都是由上、下翼缘板和不等厚的主副腹板组成，
Double beam crane accessories right box is widely used in a basic form, the main girder consists of upper and lower vertical on either side of the flange plate and web plate of rail car is decorated in the center of the line on the flange, its simple structure, easy fabrication, suitable for batch production, but the weight is bigger. Partial rail box double beam and rail box single girder cross section are ranged from upper and lower flange plate and the thickness of the main deputy of web,
山东力王起重机械有限公司坚持环保生产，绿色使用，为社会的可持续发展贡献一份力量，使产品生产对应时代的需要，满足消费者的需求。
Shandong longteng hoisting machinery co., LTD adhere to the green production, green is used, to contribute the sustainable development of society, make the product production corresponding to the needs of The Times, meet the needs of the consumers.
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