1) grapple lower
抓斗下降
2) grab used in water
水下抓斗
4) grab bucket
抓斗
1.
Optimization of the control on the falling reference of the grab bucket of ore ship unloader;
矿石卸船机抓斗下沉量控制优化
2.
According to the actual working conditions of bolting-shotcrete supporting in coal-mine tunnel,the working mechanism of different buckets was studied,their merits and demerits were analysed,and the double-crank grab bucket with assistant linkage was proved to be an ideal choice of grabbing materials in coal-mine tunnel because its motion trace was definite and symmetric and occupied lesser space.
从巷道锚喷支护中物料抓取的实际作业环境出发,对拟采用的几种抓斗的工作机理进行了分析研究,比较了各方案的优缺点,指出辅助连杆的双曲柄抓斗的运动轨迹确定、对称,且具有在竖直方向上占用空间最小的特点,是井下巷道施工中物料抓取的理想选择,这种设计方法能够为相关抓取装置的设计起到参考作用。
3.
This paper analyses in quantity for the key factors to influence the fold and unfold of the grab bucket in the four-drum grab bridge ship unloader.
对四卷筒抓斗卸船机抓斗开闭的影响因素进行定量分析,根据悬索理论,给出了悬垂段钢丝绳的悬垂方程。
5) grab
[英][ɡræb] [美][græb]
抓斗
1.
Several problems in designing long stay bar double jaw boards grab;
长撑杆双颚板抓斗设计中的几个问题
2.
Numerical analysis of the disabled grab and some improvements in structure;
抓斗失效的数值分析及结构改进
3.
Simulation and analysis of grab lifting dynamic load coefficient;
抓斗起升动载系数的仿真分析
6) clamshell
[英]['klæm,ʃel] [美]['klæm,ʃɛl]
抓斗
1.
The clamshell excavates the deep and shallow wall troughs because it has the characteristics of high working efficient, easy to move and .
深、浅墙均采用抓斗挖槽， 因其具有工效高、移动方便、施工无震动等特点。
2.
In the construction of foundation seepage control wall for construction cofferdam of Wangpuzhou Water Control Project in the Hanjiang River,the clamshell was used to dig the trench.
在汉江王甫洲水利枢纽施工围堰基础防渗工程中，采用抓斗挖掘槽孔，成功地建造了３道固化灰浆防渗墙，总截水面积达１５１７８。
3.
When a clamshell dredger is used to carry out over-depth and over-width dredging,accuracy control is always one of the difficulties.
抓斗式挖泥船进行超深超宽施工时,精度控制始终是难题之一。
补充资料：地下水位下降漏斗
地下水位下降漏斗
water-table depression cone
d ix旧shuiwei xiajiang loudou地下水位下降漏斗(water一table depres·sion cone)当地下永开采量大于补给量时，地下含水层产生向下凹陷的自由水面或水压面(前者指潜水含水层的水位，后者指承压含水层的水位)状似漏斗 漏斗的类型有季节性.‘漏斗”和常年性“漏斗”季节性漏斗:主要受气候和开采因素的影响，常出现在干旱季节。降水季节，由于入渗、补给，水位逐渐恢复，漏斗随之消失。常年性漏斗:由于长年超量开采，形成的漏斗，虽经雨季，地下水位(水压)有所回升，但漏斗仍然存在。 漏斗造成的不良后果:①漏斗面积不断扩展，水位持续下降，会造成井中水浅或无水而报废，或必须更换水泵;②由于被开采的总厚度较厚的含水层(组、段)中的水被取出，含水岩层的孔隙失去水压力的支撑，在上覆地层压力下，会造成地面沉降或塌陷;③在浅层淡水与咸水交替分布区，因过量开采，使淡水水压减低，四周咸水体向淡水体挤压，上覆咸水体向下入渗，下垫咸水体向上顶托补给，逐渐使淡水体或淡水层(段)的水矿化度增高，水质变坏;④滨海地区，因超量开采地一F水，淡水层压力水头降低，地下水流向和水力坡度改变，在隔水条件较差的地段，出现海水入浸倒灌，或海水沿构造破碎带入渗补给淡水含水层，造成水质变坏。(陈君联)
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条