4640 标准查询与下载

DIN 21555:1991 矿井支承.动力支承的开环控制装置的图形符号

The standard contains pictographs used as symbols for marking controls of powered support. By assigning a standard meaning to such pictographs, a marking independent on spoken or written language is arrived at.#,,#

Mine support; graphical symbols for the open loop control of powered support

DIN 21546:1990 矿井支承.支承架.标记

The inspectorate's regulations require marking of support components made of steel, cast iron, or light alloys. DIN 21549 contains the terms and definitions of powered-support components. DIN 21546 contains the markings of said components.

Mine support; strut support; marking

DIN 20506:1990 轨道固定于钢支座上用的夹板

The specifications of this standard relate to the accuracy of clamping plates on steel supports. They ar part of the securing system, primarily for rails on rail switches. These clamping plates are characterized by pins serving as additional arrestors.#,,#

Clamping plates for securing rails onto steel supports

DIN 21326:1989 矿柱锯材.坑道托板.木垫板

Planks and beams according to this standard are used for lagging as well as for setting-up of explosion barriers, stowage cofferings, ventilation doors, chocks and shutterings.#,,#

Sawn pit timber; boards and planks

DIN 21315:1989 矿山坑道用圆木.支柱和圆棒的承荷能力.计算

This standard applies to props and canopies made from round timber as per DIN 21316 and DIN 21320 for mine support pueposes, and contains the calculation route for the determination of the supporting capacity of round timber in the critical ranges of bending and buckling.#,,#

Round pit timber; load bearing capacity of props and bars; calculation

DIN 21318:1989 矿山坑道用圆木.桩木，支撑柱

This standard is to set the dimensions and qualitities for chock wood which is to be used for supporting purposes.

Round pit timber; pillar, supports

DIN 21327:1989 矿山坑道用锯材.制造工作台用的平木板、厚木板和方形锯木

Sawn pit timber; boards, planks and square-sawn timber for working platforms

DIN 21319:1989 矿山坑道用圆木.螺栓

This standard sets dimensions for struts. Struts are round timbers used for the prevention of longitudinal displacement and deflection of mine support.

Round pit timber; bolts

DIN 21548:1989 矿井支撑用横梁

This standard sets the requirements for rails used for the manufacture for supports.

Rails for mine supports

DIN 21550:1988 矿井支承.单立柱屋顶梁.试验和要求

Mine support; roof bars for single props; testing, requirements

DIN 21549:1988 矿山支承物.动力移动支承物.术语

For better understanding, the terms within powered support need to be defined. This standard contains systems and definitions of terms for components, working cycles, and forces in handling and operation of powered support.#,,#

Mine supports; powered walking supports; terminology

DIN 21316:1987 矿山坑道用圆木.支撑，圆棒

Round pit timber; props, bars

DIN 21328:1987 矿山坑道用锯截木材.背板

This standard applies to slabbing offcut used underground for lagging. Slabbing offcuts are produced when squaring round timber. Round slabbs are offcut with one smooth surface. Facing boards exhibit cut surface (in parallel) over their whole length the width of the smaller cut surface corresponding to less of two thirds of the greatest width of the broader cut surface.

Cut pit timber; slabs

DIN 21324:1987 矿山坑道用锯截木材.榫桩用木料

Cut pit timber; wood for cogs

DIN 21321:1987 矿山坑道用锯截木材.方木材

Cut pit timber; square timber

DIN 21320:1987 矿山坑道用圆木.技术质量和交付要求

These quality specifications and terms of delivery apply mainly to props, canopies and half-round pieces of timber as per DIN 21316, for bars and split bars as per DIN 21317, and for struts as per DIN 21319, made from leaf or pinewood and used in mining; in their original round shape, cut over their length once or several times, squared, with or without their bark. Squared timber is round timber sawn over the whole length, the width of the cut surface being approximately equal to half the diameter of the round timber.

Round pit timber; technical quality and delivery requirements

DIN 21329:1987 矿井用锯材.木材交付和质量技术条件

These quality specifications and terms of delivery for cut mine timber apply to leafwood and pinewood used in mining e.g. as dressed timber as per DIN 21321 or as tramboards, planks or dressed timber as per DIN 21327. For shaftguides DIN 21341 applies.#,,#

Cut pit timber; technical terms of delivery and quality

DIN 21317:1987 矿井用圆木材.支拱用圆木

This standard applies to round timber in form of bars and split bars used unterground for lagging.

Round pit timber; timber for lagging

DIN 21556:1987 矿井支撑物.单立支撑的阀门.标识代码

Mine support; valves for individual props; identification code

DIN 21557:1987 矿井支承.动力支承的压力极限阀.标识代码

The standard contains requirements for identification marking.

Mine support; yield valves for powered support; identification code