油缸

It uses AMESim to Model and Simulate the servo-cylinder hydraulic system of the straightening machine and discovers the reasonable pr essure of overflow valve between the servo valve and Rodless cylinder servo cavity.

根据油缸压力信号，采用 AMESim 对矫直机伺服缸液压系统进行建模与仿真，找出伺服阀出口和伺服缸无杆腔之间的溢流阀的最合理压力。

At same time it collects the pr essure signal of Servo-cylinder, it finds that the overflow valve pr essure sets too high between the servo valve and Rodless cylinder servo cavity, Tanks should not stress-free cavity under unloading, According to the fuel tank pr essure signal.

摘 要：本文针对某热轧厂横切线上的主要设备矫直机在矫直高强度，厚规格产品时，当负载受到外扰动时，矫直机传动轴经常断，工作辊轴承经常损坏现象，于是对伺服缸压力信号进行采集，发现装在伺服阀出口和伺服缸无杆腔之间的溢流阀压力设置过高，油缸无杆腔压力不能卸荷。

First according to the hydraulic pressure elevator system diagram, use the machine design and hydraulic transmission knowledge calculates the diameter of the plunger, cylinder tube wall thickness as well as cylinder bottom thickness; second, through the examination confirmation to the obtained result to complete the work of cylinder design; Simultaneously has carried on the component choice and the computation; Through to the system calorific capacity computation the and the volume of cooling water while the fuel tank cools when needs to complete the hydraulic pressure elevator fuel tank design; Based on the system oil stream condition to calculated the tube internal pressure lose, the local pressure loss as well as the all of the pressure lose to carried on the system checking calculation; Finally through the consult correlation design handbook to calculation and examines the belt, the band pulley, the axis, as well as the key, has completed the hydraulic pressure elevator pumping station transmission system design.

首先根据液压电梯系统原理图，利用机械设计与液压传动等方面的知识计算出柱塞的直径、缸筒的壁厚以及缸底厚度，并对所得结果进行校核验证完成了工作油缸的设计；同时进行了元件的选择和计算；其次，通过系统发热量的计算和油箱冷却时需要的冷却水量的计算完成了液压电梯油箱的设计；依据系统油流状态计算出管内压力损失、局部压力损失以及总压力损失进行了系统的验算；最后通过查阅相关设计手册对带、带轮、轴、以及键进行设计计算和校核，完成了液压电梯的泵站传动系统的设计。

Firstaccording to the hydraulic pressure elevator system diagram, usethe machine design and hydraulic transmission knowledge calculatesthe diameter of the plunger, cylinder tube wall thickness as wellas cylinder bottom thickness; second, through the examinationconfirmation to the obtained result to complete the work ofcylinder design; Simultaneously has carried on the component choiceand the computation; Through to the system calorific capacitycomputation the and the volume of cooling water while the fuel tankcools when needs to complete the hydraulic pressure elevator fueltank design; Based on the system oil stream condition to calculatedthe tube internal pressure lose, the local pressure loss as well asthe all ofthe pressure lose to carried on the system checking calculation;Finally through the consult correlation design handbook tocalculation and examines the belt, the band pulley, the axis, aswell as the key, has completed the hydraulic pressure elevatorpumping station transmission system design.

首先根据液压电梯系统原理图，利用机械设计与液压传动等方面的知识计算出柱塞的直径、缸筒的壁厚以及缸底厚度，并对所得结果进行校核验证完成了工作油缸的设计；同时进行了元件的选择和计算；其次，通过系统发热量的计算和油箱冷却时需要的冷却水量的计算完成了液压电梯油箱的设计；依据系统油流状态计算出管内压力损失、局部压力损失以及总压力损失进行了系统的验算；最后通过查阅相关设计手册对带、带轮、轴、以及键进行设计计算和校核，完成了液压电梯的泵站传动系统的设计。

Therefore,For the manufacturers of production and use of such hydraulic cylinder,To build top-loading test rig for high-pressure hydraulic cylinder type test is particularly important.

油缸生产厂家对其修理或制造的油缸，在产品鉴定或出厂时，必须按照国家规定及现行标准（GB/T 15622-2005），进行型式试验或出厂试验。

Thus to realize the work-piece clamping (when using, do not need to clamping too tight), then to make sure that when at working, the web is always in the middle of position of master transmission wheel.

前后浮动辊道采用液压油缸，由液压油缸带动连接架、拉杆、使升降臂回转使其上的滚筒同步升起，在主动滚轮升起后，使浮动辊道同步升起，保证工作在矫正过程中行走平稳。

The hydraulic anti-sway system consists of anti-sway drums, anti-sway steel cable, hydraulic rams, hydraulic pump station and pulley block. The system can be controlled by two different pressure hydraulic circuits and absorb load swing energy.

液压油缸式减摇系统由减摇卷筒、减摇钢丝绳、液压油缸、液压泵站和滑轮组等组成，通过2个不同压力的液压回路进行控制，从而吸收吊重摆动的能量。

Technology companies with advanced production fuel tanks, the main components and seals selected imported products, quality, reliable, yet beautiful, fully replace imported fuel tank, the vehicle has been widely used in engineering, metallurgy, presses, mining and other industries.

公司以先进工艺技术生产油缸，主要部件及密封圈选用进口产品，质量可靠，外形美观，能完全替代进口油缸，目前已广泛应用于工程车辆、冶金、塑机、矿山等行业。

On the beam at rear side of climbing frame,jointed with two ear-plates and hydraulic system oil cylinder,acting as guide and bearing from the jocking oil cylinder.

在爬升架的横梁上，焊上两块耳板与液压系统油缸铰接，承受油缸的顶升载荷。

At normal operation, the three pitch control cylinders receive control si...

在正常工作状态下，由三只控制油缸接受控制系统指令实现精确变桨；在故障状态下，三只安全油缸分别驱动三只桨叶回到顺桨位置。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。