材料的性能是决定电梯门套是否容易变形的基础因素。在选择材料时，要充分考虑其物理特性和环境适应性。有天然石材、人造石、金属材料、木制材料

　　The performance of materials is the fundamental factor determining whether elevator door frames are easily deformed. When selecting materials, full consideration should be given to their physical properties and environmental adaptability. There are natural stone, artificial stone, metal materials, and wooden materials available

　　安装工艺规范

　　Installation process specifications

　　规范、专业的安装工艺是避免电梯门套变形的关键环节，任何一个步骤的失误都可能埋下变形隐患。

　　A standardized and professional installation process is a key step in avoiding deformation of elevator door frames, and any mistake in any step may bury potential deformation hazards.

　　精准测量：安装前，要对电梯门洞的尺寸进行多次精确测量，确保门套尺寸与门洞匹配。若尺寸误差较大，强行安装会使门套产生内部应力，后期极易变形。测量时，需分别测量门洞的高度、宽度和对角线长度，保证误差控制在允许范围内。

　　Accurate measurement: Before installation, the size of the elevator door opening should be accurately measured multiple times to ensure that the door frame size matches the door opening. If the size error is large, forced installation will cause internal stress in the door frame, which is prone to deformation in the later stage. When measuring, it is necessary to measure the height, width, and diagonal length of the door opening separately to ensure that the error is controlled within the allowable range.

　　稳固基层处理：电梯门洞的基层墙面要平整、牢固。若基层不平整，安装门套时会导致受力不均，引发变形。对于不平整的墙面，需先用水泥砂浆进行找平处理，待基层干燥、牢固后，再进行门套安装。同时，若基层墙体为空心砖或轻质砖等非承重墙体，应采取加固措施，如加装龙骨或使用专用的墙体加固材料，增强基层的承重能力。

　　Stable base treatment: The base wall of the elevator door opening should be flat and firm. If the base is uneven, installing door frames can cause uneven stress and deformation. For uneven walls, cement mortar should be used for leveling treatment first. After the base layer is dry and firm, door frames can be installed. At the same time, if the base wall is a non load bearing wall such as hollow bricks or lightweight bricks, reinforcement measures should be taken, such as installing keels or using specialized wall reinforcement materials, to enhance the load-bearing capacity of the base.

　　正确固定方式：根据门套材料的不同，选择合适的固定方式。对于石材门套，常用的固定方法是干挂法或粘贴法。干挂法通过金属挂件将石材与基层墙面连接，可有效避免因粘贴材料收缩导致的变形；粘贴法需使用高强度、耐候性好的粘结剂，确保石材与墙面紧密结合。木质门套一般采用膨胀螺丝或射钉固定在基层木龙骨上，固定点要分布均匀，避免局部受力过大。金属门套则可通过焊接或螺丝固定的方式安装，但要注意焊接时的温度控制，防止因高温导致金属变形。

　　Correct fixing method: Choose the appropriate fixing method according to the different materials of the door frame. For stone door frames, the commonly used fixing methods are dry hanging or pasting. The dry hanging method connects the stone with the base wall surface through metal pendants, which can effectively avoid deformation caused by shrinkage of the adhesive material; The pasting method requires the use of high-strength and weather resistant adhesives to ensure a tight bond between the stone and the wall. Wooden door frames are generally fixed to the base wooden keel with expansion screws or nails, and the fixing points should be evenly distributed to avoid excessive local stress. Metal door frames can be installed by welding or fixing with screws, but attention should be paid to temperature control during welding to prevent metal deformation caused by high temperatures.

　　预留伸缩空间：由于材料存在热胀冷缩的特性，安装时要预留伸缩缝。伸缩缝的宽度一般根据材料和使用环境确定，通常在 3 - 5 毫米之间。伸缩缝内填充弹性密封材料，如硅酮密封胶，既能保证门套的伸缩自由，又能起到防水、防尘的作用。

　　Reserved expansion space: Due to the thermal expansion and contraction characteristics of the material, expansion joints should be reserved during installation. The width of expansion joints is generally determined based on the material and usage environment, usually between 3-5 millimeters. Filling the expansion joint with elastic sealing material, such as silicone sealant, can ensure the free expansion and contraction of the door frame, while also providing waterproof and dustproof functions.

　　加强日常维护:即使前期材料选择和安装工作做得再好，如果后期使用维护不当，电梯门套仍可能出现变形问题。合理使用：要引导乘客文明使用电梯，避免对门套进行撞击、踢打等暴力行为。在搬运大件物品时，应采取保护措施，防止物品与门套发生碰撞;定期检查：定期对电梯门套进行检查，查看门套是否有裂缝、变形、松动等情况;清洁保养：保持电梯门套的清洁，定期进行擦拭。

　　Strengthen daily maintenance: Even if the material selection and installation work in the early stage is done well, if the later use and maintenance are not done properly, the elevator door frame may still have deformation problems. Reasonable use: It is necessary to guide passengers to use the elevator in a civilized manner and avoid violent behaviors such as hitting, kicking, and hitting the door frame. When transporting large items, protective measures should be taken to prevent collisions between the items and the door frame; Regular inspection: Regularly inspect the elevator door frame to check for cracks, deformations, looseness, and other issues; Cleaning and maintenance: Keep the elevator door frame clean and regularly wipe it.

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