查询词典 crane

Based on the study of model test of post-tensioned prestressed concrete box-shaped beam, the feasibility and correctness of this structure being applied for pillar wharf with bridge crane is tested and verified, which provides reference for calculation of post-tensioned prestressed box-shaped beam of bridge crane design This structure can be applied for port construction at large water amplitude area rationally

港口桥吊后张预应力起重机梁的模型试验研究重庆交通学院王多银陈嘉勤摘要通过对后张预应力混凝土箱梁模型试验研究，验证该结构用于桥吊墩式码头的可行性，寻求预应力桥吊箱梁的理论计算依据，并验证其正确性，为后张预应力桥吊箱梁的设计提供参考计算方法，使该结构能科学

You can see the red-crowned crane, white swan, crane, pelican, white-fronted geese, swans, gulls, such as a large number of small countries and 12 provinces of rare protected species.

你可以看到丹顶鹤、白天鹅、灰鹤、鹈鹕、白额雁、天鹅、小鸥等一大批国家及省一二级珍稀保护动物。

This design is the electric hoist crane reduction rotating wall design, the main design content is general electric hoist crane reduction of rotating shaft, and bolt, gear, decorate crossbeam, etc.

本次设计就是对壁式旋转电动葫芦起重机减速器进行设计，主要设计内容是壁式旋转电动葫芦起重机减速器的齿轮轴，及螺栓，键，横梁等选用布置及校核。

One day, the Taoist drew a yellow crane on the wall with the orange skin, said,"The crane will dance upon hearing the clap".

一天，他用橘子佐酒，饮罢，用橘皮在酒店的壁上画了一只黄鹤，自言道：&酒客至拍手，鹤即下飞舞。&

This thesis presents the studies of U-shape gantry structure of container gantry crane, and dynamic simulation and fatigue life estimation of its rigid anti-sway. The main contends are as follows: Supposed that trolley frame is composed of spring structure, due to larger trolley gauge of U-shape gantry structure. For the gantry crane, a series spring dynamic vibrating model with three masses, three freedoms of degrees is built in this thesis and vibrating calculus equations are precisely resolved by mode analyses rule.

本文研究集装箱门式起重机U型门架结构及其刚性减摇系统的动态仿真和疲劳寿命估算，主要内容如下：由于U型门架结构小车轨距较大，本文建立了考虑小车架为弹性结构时门式起重机的三质量三自由度串联弹性动力学振动模型，用模态分析法求解振动系统微分方程组的数值精确解。

This kind of chain block can work in set with single rail trolley to form a small hoisting car travelling on single rail for overhead conveyance and can also work in set with single beam crane and cantilever crane.

该系列手拉葫芦可与单轨行车配套使用组成起重运输小车，用于单轨架空运输，或用于手动单梁起重机和悬臂式起重机。

After open the switch, the tower crane should get to the pulley part(be set on the track extreme position), with the role of inertia and promote the pulley continuous slide to the forward, when it got the terminals of the track, the tower crane will stopp smoothly.

开关动作后，塔机应接触到滑动撞块，并在惯性作用下，推动滑动撞块继续向前滑行，碰到轨道端部的终端撞块时，塔机应比较平稳地停下来。

"The Crane Returning a Favor"-- For those of you unfamiliar with Japanese folk tales, this is the story of a farmer who saves a crane from a snake.

&鹤的报恩&：对不熟悉日本民间故事的朋友，这个故事描述了一个农民救了一只差点丧身蛇口的鹤。

Yellow Crane Tower Hill area where the snake turned into Yellow Crane Tower Park.

黄鹤楼所在的蛇山一带辟为黄鹤楼公园。

Bridge-type hoist crane after wireless remote control re-equipping, the staff both may in the cab operation hoist crane, and may use the remote control remote control.

桥式起重机在无线遥控改装后，工作人员既可以在驾驶室操作起重机，又可以用遥控器远程控制。

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

The article combines with the treatment of a superficial civil air defense work to introduce how the grouting method to improve the performance of the backfill soil.

文章从治理漂浮人防工事的角度提出了注浆技术在改善回填土性质方面的应用，并详细阐述了注浆技术的施工流程。