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          家用电梯钢丝绳维护保养应该注意什么?

          来源:http://www.dfxhl.com     发布时间:2022-01-14   浏览次数:

          曳引钢丝绳是家用电梯重要的悬挂装置,承受着轿厢和对重的全部重量,并依靠曳引轮槽的摩擦力驱动轿厢升降。在家用电梯运行过程中,曳引钢丝绳绕着曳引轮、导向轮或反绳轮单向或交变弯曲,会产生拉应力。所以,要求曳引钢丝绳有较高的强度和耐磨性,其抗拉强度、延伸率、柔性等均应符合GB8903的规定。正是由于曳引钢丝绳的损伤程度及承载能力直接关系到人的生命和财产的安全,在使用过程中如何对其进行正确的定期检验和润滑维护显得尤为关键。
          Traction wire rope is an important suspension device of household elevator. It bears all the weight of car and counterweight, and drives the car to rise and fall by relying on the friction of traction wheel groove. During the operation of household elevator, the traction steel wire rope will bend unidirectionally or alternately around the traction wheel, guide wheel or reverse rope wheel, which will produce tensile stress. Therefore, the traction wire rope is required to have high strength and wear resistance, and its tensile strength, elongation and flexibility shall comply with the provisions of gb8903. It is precisely because the damage degree and bearing capacity of traction wire rope are directly related to the safety of human life and property. How to carry out correct periodic inspection and lubrication maintenance is particularly critical in the process of use.
          图片
          picture
          一、家用电梯用钢丝绳种类和规格
          1、 Types and specifications of steel wire ropes for household elevators
          家用电梯钢丝绳一般是圆形股状结构,主要由钢丝,绳股和绳芯组成。钢丝是钢丝绳的基本组成件,要求钢丝有很高的强度和韧性。钢丝绳股由钢丝捻成,一般6-8股。绳芯通常由纤维剑麻或烯烃类的合成纤维制。
          The steel wire rope of household elevator is generally a circular strand structure, which is mainly composed of steel wire, rope strand and rope core. Steel wire is the basic component of steel wire rope, which requires high strength and toughness. Steel wire rope strands are twisted by steel wires, generally 6-8 strands. The rope core is usually made of synthetic fibers of sisal or olefins.
          图片
          picture
          二、 影响钢丝绳寿命的因素
          2、 Factors affecting the service life of steel wire rope
          1、 外部因素
          1. External factors
          拉伸载荷,曲率半径,槽型,曳引轮槽材质,腐蚀等。
          Tensile load, radius of curvature, groove type, traction wheel groove material, corrosion, etc.
          2、 内部因素
          2. Internal factors
          钢丝的性能,钢丝的直径,钢丝的捻绕型式等。
          Performance of steel wire, diameter of steel wire, twisting type of steel wire, etc.
          山东家用电梯
          三、 钢丝绳报废标准
          3、 Scrapping standard of steel wire rope
          钢丝绳在曳引轮上的运行寿命将受到磨损和钢丝交变应力的限制。对大多数情况来说,只要观察出外部有明显的钢丝破断现象就应确定更换。
          The service life of steel wire rope on traction wheel will be limited by wear and alternating stress of steel wire. In most cases, the replacement should be determined as long as obvious steel wire breakage is observed on the outside.
          为了保证家用电梯的正常运行,钢丝绳报废的主要判断准则是,在一段预先选定的长度上检查其可见钢丝破断数目,检查长度为6d或30d(d钢丝绳直径)。当钢丝绳的可见断丝超过规定数目时,则必须更换。
          In order to ensure the normal operation of the household elevator, the main criterion for scrapping the steel wire rope is to check the number of visible steel wire breaks on a pre selected length, and the inspection length is 6D or 30d (d steel wire rope diameter). When the visible broken wire of the steel wire rope exceeds the specified number, it must be replaced.
          对于6股和8股的钢丝绳,断丝主要发生在外表。而对于多层绳股的钢丝绳就不同,这种钢丝绳断丝大多发生在内部,因而是"不可见的"断裂。另外,当钢丝绳出现绳端断丝,断丝局部集聚等现象,也应考虑报废。钢丝绳直径相对于公称直径减少7%以上时,即使未发现断丝,该钢丝绳也应报废。
          For 6-strand and 8-strand wire ropes, wire breakage mainly occurs on the surface. The wire rope with multi-layer strands is different. Most of the broken wires of this kind of wire rope occur inside, so it is an "invisible" fracture. In addition, when the wire rope is broken at the end of the rope and the broken wire is locally concentrated, it shall also be considered to be scrapped. When the diameter of the steel wire rope is reduced by more than 7% relative to the nominal diameter, the steel wire rope shall be scrapped even if no broken wire is found.

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