英语翻译ChockIn a chock support,the canopy is a solid piece and the base may be either a solid piece or two separate parts connected by steel bars at the rear and/or the front ends.In both cases a large open space is left at the center for locati

英语翻译ChockIn a chock support,the canopy is a solid piece and the base may be either a solid piece or two separate parts connected by steel bars at the rear and/or the front ends.In both cases a large open space is left at the center for locati
英语翻译
Chock
In a chock support,the canopy is a solid piece and the base may be either a solid piece or two separate parts connected by steel bars at the rear and/or the front ends.In both cases a large open space is left at the center for locating the double-acting hydraulic ram which is used to push and pull,respectively,the chain conveyor and the chock in a whole unit.This setup is also used in the shields and chock shields.
Again,all hydraulic legs are installed vertically between the base and the canopy.The number of legs ranges from 3to 6,but the four-leg chocks are by far the most popular ones.In most chock supports,there are hinge joint connections between the legs and the canopy and between the legs and the base.But in order to increase the longitudinal stability,it is reinforced mostly with a box-shaped steel frame between the base and each leg.A leg restoring device is installed around each leg at the top of the box-shaped steel frame.
The chocks are suitable for medium to hard roof.When the roof overhangs well into the gob and requires induced caving,the chocks can provide access to the gob.
Shield
Shields,a new entry in the early seventies,are characterized by the addition of a caving shield at the rear end between the base and the canopy.④The caving shields,which in general are inclined,are hinge-joint to the canopy and the base making the shield a kinematically stable support,a major advantage over the frames and the chocks.⑤
The hydraulic legs in the shields are generally inclined to provide more open space for traffic.Because the canopy,caving shield,and base are interconnected,it can well resist the horizontal force without bending the legs.Thus unlike the solid constraint in the frame/chock supports,the pin connections between the legs and canopy and between the legs and the base in a shield support make it possible that the angle of inclination of the hydraulic legs varies with the mining heights.⑥Since only the vertical component of the hydraulic leg pressure is available for supporting the roof,the actual loading capacity of the shield also varies with the mining heights.
Chock Shield
The chock shield combines the features of the chocks and the shield.As such it possesses the advantages of both.⑦
If all of the four or six legs are installed between the canopy and the base,it is called a chock shield.There are regular four-or six- leg chock shields in which all legs are vertical and parallel.Others from V or X shapes.Some canopies are a single piece and some are two pieces with a hydraulic ram at the hinge-joint.
The chock shield has the highest supporting efficiency.They are suitable for hard roof.

英语翻译ChockIn a chock support,the canopy is a solid piece and the base may be either a solid piece or two separate parts connected by steel bars at the rear and/or the front ends.In both cases a large open space is left at the center for locati
钢梁
在钢梁支持下,天篷是一个坚实的作品和基地既可以是坚实的一件或两部分连接钢筋,在后方和/或前端.在这两种情况下一个大的开放空间,是留在中心定位双动液压内存是用来推拉,分别为,链式输送机和钢梁整体股.这种体制也可以用来在盾牌和钢梁盾牌.
再次,全液压腿垂直安装间基地和伞盖.数目不等的双腿从3to 6 ,但四腿chocks是目前最流行的.在大多数钢梁支撑,有铰之间的连接腿和树冠之间,腿和基地.但为了增加纵向稳定性,它是钢筋大多是同一个方框形钢架之间基数,每腿.一条腿恢复设备安装大约每腿在顶部的盒形钢架.
该chocks适合中等至坚硬顶板.当顶板overhangs早已进入采空区,并要求诱导崩落,chocks可以充分利用采空区.
盾牌
盾牌,一个新入职,在七十年代初期,其特点是增设了一个放顶盾后方年底之间基地和伞盖.④对放顶盾,而在一般倾向,是铰链联合向树冠和基地,使盾牌一动稳定支持,一大优势超过了帧和chocks .⑤
液压腿在盾牌一般都倾向于提供更多休憩空间,为交通.因为天篷,放盾和基地之间相互关联,它可以抵御水平力而不弯曲双腿.因此不像固体约束在帧/钢梁支持,销之间的联系,腿部和树冠之间,腿和基地盾牌支持,使之有可能的角度倾斜的液压腿随采矿台阶.⑥自只有垂直分量的液压站压力可承托屋顶,实际承载能力的盾也有差异与矿业的高峰.
钢梁盾牌
该钢梁盾相结合的特点,该chocks和盾牌.因此,它拥有两地优势.⑦
如果所有的四或六只脚都安装之间林冠和基础,它是被称为钢梁挡箭牌.有定期的四或六腿钢梁盾牌,其中所有的双腿垂直与平行.另从V或X形.一些檐篷是一个单一的作品,有些是两件与液压内存在铰链联合.
该座屏最高支持效率.它们是否适合坚硬顶板.

塞子
In塞子支持，机盖是一个坚实片断，并且基地也许是一个坚实片断或铁棍连接的二不同部分在后方并且/或者前端。 在两种情况下一个大露天场所留出在找出被用于推挤和拉扯，链式传送机和在一个整体单位的各自塞子的双向作用的液压油缸中心。 这个设定也用于盾和塞子盾。
Again，所有水力腿被安装垂直在基地和机盖之间。 腿的数量从3to 6范围，但是四腿塞子显然是最普遍部分。 在多数塞子支...

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塞子
In塞子支持，机盖是一个坚实片断，并且基地也许是一个坚实片断或铁棍连接的二不同部分在后方并且/或者前端。 在两种情况下一个大露天场所留出在找出被用于推挤和拉扯，链式传送机和在一个整体单位的各自塞子的双向作用的液压油缸中心。 这个设定也用于盾和塞子盾。
Again，所有水力腿被安装垂直在基地和机盖之间。 腿的数量从3to 6范围，但是四腿塞子显然是最普遍部分。 在多数塞子支持，有屈戍关节连接腿和机盖之间和腿和基地之间。 但是为了增加纵向稳定性，它加强主要与在基地和每条腿之间的箱形的钢制框架。 恢复设备的腿在每条腿附近被安装在箱形的钢制框架顶部。
The塞子适用于媒介对坚硬屋顶。 当屋顶很好伸出入嘴并且要求导致的塌落时，塞子可能提供存取对于嘴。
Shield
Shields，一个新的词条在70年代初，描绘为塌落盾的加法在基地和机盖之间的尾端。 ④The塌落盾，一般来说是倾斜的，是铰链联接对做盾运动学上稳定的支持的机盖和基地，主要好处超过框架和chocks.⑤ 在盾的The水力腿通常倾斜为交通提供更多露天场所。 由于机盖，使盾陷下和基地被互联，它可能很好抵抗水平的力量，无需弯曲腿。 因而不同于在框架或塞子支持的坚实限制，引线连接腿和机盖之间和腿和在盾支持的基地之间使成为可能倾角水力腿的随采矿heights.⑥Since变化水力腿压力仅垂直分量为支持屋顶是可利用的，盾的实际负载容量随采矿高度也变化。
Chock盾
The塞子盾结合塞子和盾的特点。 这样它拥有both.⑦的好处
If全部四或六条腿被安装在机盖和基地，它之间称塞子盾。 有所有腿是垂直和平行的规则四或六腿塞子盾。 其他从V或X形状。 有些机盖是单件，并且一些是与一个液压油缸的二个片断在铰链联接。
The塞子盾有最高的支持的效率。 他们适用于坚硬屋顶。

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