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1、industrial automobile and loading and unloading mechanism is 0.95, in the following formula: F1：伸出推力(Extension thrust force) kgf F2：压缩推力(Compressed thrust force)kgf D： 缸体直径(Cylinder diameter)mm d： 活塞杆直径(Piston rod diameter)mm p： 压力(Pressure) kgf/cm ： 载重压力系数(Loading pressure coefficient) 速度的计算(Calcul
2、ation of speed) (3) (4) ！注意 油缸使用注意事项 Caution! Points for attention for cylinder use 推力的计算(Calculation of thrust) A.理论推力(Theoretical thrust) F1 (1) F2 (2) B.实际推力(Actual thrust) 实际推力通过理论推力乘以求出。 建筑机械、产业车辆以及装卸机械的值为0.95。 式中： The actual thrust is equal to theoretical thrust multiplies with The value for c
3、onstruction mechanism, 留空气受急剧夹压时，那么，由于液压油的作用，有可能 使密封圈烧损。另外，动作中如果油缸内部产生负压，那 么，将有可能由于气蚀作用而发生异常。 The air in cylinder should be fully discharged at the beginning of operation. As for residuals, the air should be eliminated at a low speed operation. If the residual air in cylinder is impacted by abrupt c
4、lamp pressure, the seal ring will be dam- aged due to the effect of diesel oil. Besides, if vacuum pressure is generated in cylinder during movement, abnormity will be caused by air eroding effect. 工作油(Operating oil) 合适的工作油(Appropriate operating oil) 下表所示为推荐的工作油(The following tables show the recomme
5、nded operating oil)： 工作油的使用粘度范围(Viscosity range of operating oil) 工作油的污染度管理(Contamination management of operating oil) 推荐值：NAS9级以内 Recommended value：within grade NAS9 回路油温(Oil temperature for return circuit) 极限油温范围：-20100 Limited oil temperature scope: 20100 油缸的推力/速度 Thrust/ speed of oil cylinder 安装
6、和运转(Installation and operation) 开箱(Opening container) 油缸内封有气化性防锈剂，所以，在装配前不得拆 下入口的塞子。如果拆下塞子，必须立即安装在机体上， 而且在油缸内放满油。 It is prohibited to remove the opening plug before assembly as gasified rust preventative is sealed in cylinder. If the plug is removed, please install it on the main body immediately an
7、d fill the cylinder with oil. 防锈(Rust prevention) 油缸安装在机体上以后，如果活塞在伸出的情况下 放置时，必须在活塞杆的露出部分涂敷油脂。 After the cylinder being mounted onto the main body, and if the piston extends outside, please coat the external part of piston rod with grease. 速度(Speed) 一般规格的油缸，当动作速度超过2m/s时，其使用 寿命将会受到影响。以0.3m/s作为冲程末端的场合，
8、为 了保护机构和安全起见，建议内部安装缓冲机构。另外， 使油缸停止时，为了保护油缸机构和安全起见，线路上 也必须考虑，以防止发生很大的冲击。为了增加油缸的 回油量，线路设计时应该特别注意。在0.5m/min以下低 速运转时，将会影响到动作性（特别是振动），所以， 低速运转时，应该进行洽谈。 For cylinders with general specification, the service life will be impacted when the speed exceeds 2m/s. For the circumstance setting 0.3m/s as stroke dea
9、th point, it is recommended to install a buffer device for protection and safety. Besides, when the cylinder stops, take circuitry into consideration to avoid large impact. In order to increase return quantity, pay special attention of circuitry design. For 0.5m/min low speed operation, negotiation
10、is needed for the movement will be impacted (particularly the vibration.) 运转 运转初期，必须完全排清油缸内的空气。残留空气 的场合，采取低速充分运转，排除空气。如果油缸内残 P D 2 400 P 2 400 2 3 2 1 10 4 = D Q V 3 2 2 2 10 4 - = d D Q V 2 1 寒冷地区 Cold area 温暖地区 Warm area 室外温度 Outside temperature - 10 25 室外温度 Outside temperature 0 35 ISO VG32 ISO V
11、G46 油温 Oil temperature 粘度 Viscosity 10 - 6 m 2 /s (cST) ISO VG32 ISO VG46 合适范围 Appropriate range 25 100 17 45 23 55 适用范围 Applicable range 15 500 - 7 60 0 70 压曲强度和行程 Buckling strength and stroke 2 承受压缩负载的油缸的行程通过压曲强度来控制。 The stroke of cylinder bearing with compressing loading is controlled by buckling
12、 strength. A. 许容压缩负载（最伸长时） Permissible compressing loading (max. extension) S pk Wa = (5) 式中(In the formula)： Wa :许容压缩负载(Permissible compressing loading) kgf Pk :压曲负载(Buckling loading) kgf S ：安全率(Safety rate) S 值根据用途有所不同。 S is changeable according to different applications. Wa F 1 的场合，通常考虑为 1.5 2.5
13、以上。 详细情况订货时洽谈。 When WaF1, it is commonly considered as above 1.52.5. For details, negotiation is needed when ordering. B. 压曲负载(Buckling loading) 根据支撑部的形式，有仅仅活塞杆承受负载的场合（单 柱）和缸体承受负载的场合（台阶柱） 。压曲的计算分别如 下。有关承受横向负载的场合另行研究。 Therere two situations according to the forms of supporting part: only piston rod l
14、oading (single column) and cylinder loading (step column). See the following for the calculation of buckling. Horizontal loading situation will be researched later. a. 有关单柱场合详见下页 See next page “a” for single column situation a b. 有关台阶柱的场合详见 See “b” for step column situation b 。 一端固定，另一端回转的场合： The si
15、tuation of one terminal fixing, and the other returning: 2 2 2 1 l EI K Pk = (8) 一端固定，另一端自由的场合： The situation of one terminal fixing, and the other free 2 2 2 2 l EI K Pk = （ 9 ） 两端回转的场合： The situation of both two terminals returning 2 2 2 3 l EI K Pk = （ 10 ） 式中(In the formula)： l：柱子的长度(Length of column ) mm I ：柱子端面 2 次力矩(2nd moment of column
