精品国产一区二区三区免费-精品国产一区二区三区久久久蜜臀-精品国产一区二区三区久久久狼-精品国产一区二区三区久-精品国产一区二区三区精东影业-精品国产一区二区三区国产馆

Welcome to the official website of Suzhou Sutong special cold drawn steel Co., Ltd!
Ch En
Your location: Home > Information Dynamics > Industry trends

Why is the load-bearing capacity of elevator guide rail components strong

Source:www.jy43.cn      Release date: 2025年07月28日
Information summary:The strong load-bearing capacity of elevator guide rail components is the result of the synergistic effect of multiple factors such as material characteristics, structural design, processing technology, and installation accuracy. The core goal is to ensure the stability and safety of the elevator car and counterweight (balance weight) during high-speed operation, start stop, and load changes. Belo
       The strong load-bearing capacity of elevator guide rail components is the result of the synergistic effect of multiple factors such as material characteristics, structural design, processing technology, and installation accuracy. The core goal is to ensure the stability and safety of the elevator car and counterweight (balance weight) during high-speed operation, start stop, and load changes. Below is an analysis of the specific reasons:
1、 Material selection: High strength substrate provides the foundation for load-bearing
      The core material of elevator guide rails is high carbon steel (such as S355JR, ST52-3 and other low-alloy high-strength steels), and its mechanical properties directly determine the upper limit of bearing capacity:
      High yield strength: The yield strength of this type of steel is usually above 350MPa (far exceeding the 235MPa of ordinary low-carbon steel), which means that it is not prone to plastic deformation (bending or fracture) when subjected to large loads and can maintain structural stability for a long time.
      Good toughness: Through processes such as rolling and heat treatment, steel has both strength and toughness, and can withstand the impact force during elevator start and stop (such as the inertia force during sudden loading of the car or emergency braking), avoiding brittle fracture.
      Uniform material density: Using high-quality continuous casting steel billets for rolling, the material has no defects such as pores or interlayers inside, ensuring uniform load distribution and avoiding early damage caused by local stress concentration.
2、 Structural Design: Section Optimization for Efficient Force Transmission
The cross-sectional shape of elevator guide rails (such as T-shaped, hollow guide rails, special guide rails) is precisely calculated through mechanics, and optimized through parameters such as "sectional inertia moment" and "bending section coefficient" to achieve efficient bearing of vertical loads and horizontal forces
T-shaped guide rail (most commonly used):
      The cross-section is T-shaped and consists of a vertical web plate (connected to the guide rail bracket) and a horizontal flange (the working surface where the car/counterweight guide shoe contacts).
      The thickness of the vertical web plate is relatively large (usually 8-12mm), which can withstand the vertical gravity of the car and transfer the load to the building structure (wall or load-bearing beam) through guide rail brackets;
      The width of the horizontal wing edge is sufficient (usually 50-120mm), with a large contact area with the guide shoe, to disperse the lateral force of the car (such as car deflection, wind load, or centrifugal force during curved operation) and avoid excessive local pressure.
Hollow guide rail (for heavy-duty or low-speed elevators):
      The cross-section is a closed rectangle or groove shape, and the hollow structure reduces weight while enhancing overall torsional and bending resistance through the "closed cross-section", suitable for bearing vertical loads and guiding forces of counterweights.
      Special guide rails (such as T75 and T89 types for high-speed elevators):
For high-speed elevators (speed>2.5m/s) with large loads and high impact forces, the cross-sectional size is larger (with increased flange width and web thickness), and the moment of inertia is increased by more than 30%, which can resist vibration and impact during high-speed operation.
3、 Processing technology: Strengthen material properties and structural accuracy
      The machining process of the guide rail further enhances its load-bearing capacity through "rolling+heat treatment+precision machining":
      Hot rolling forming: After multiple passes of rolling, the internal grain size of the steel billet is refined, and the mechanical properties are more uniform. At the same time, the cross-sectional size accuracy is controlled within ± 0.5mm to ensure the fit with the guide shoe and bracket, and to avoid uneven load distribution caused by gaps.
      Surface hardening treatment: The working surface of the guide rail (the flange surface in contact with the guide shoe) is quenched and tempered to a hardness of HB200-250, which not only improves wear resistance (reduces dimensional wear caused by long-term friction), but also enhances surface compressive strength (the pressure of the guide shoe on the guide rail can reach more than 10MPa).
      Straightness and parallelism control: Through cold straightening technology, the straightness error of the entire length of the guide rail (usually 3-5m/piece) is ≤ 0.5mm/m, and the distance deviation between two parallel guide rails is ≤ 1mm, ensuring that the car/counterweight is symmetrical in force during operation and avoiding additional bending moments caused by tilting.
4、 Installation and fixation: rigid connection with building structure
      The guide rail is not independently load-bearing, but is rigidly connected to the main structure of the building (concrete wall, steel structure load-bearing beam) through the guide rail bracket, forming a load transmission chain of "guide rail bracket building structure":
       High strength fixation of guide rail bracket:
       The bracket is welded with angle steel, channel steel or steel plate, and is rigidly connected to the building structure through expansion bolts, embedded steel plates, etc. Each bracket can withstand a vertical load of 5-10kN (equivalent to a weight of 500-1000kg), ensuring that the fixing points of the guide rail will not loosen or deform.
Multi point dispersed load:
       A bracket is set every 1.5-2m along the height of the guide rail in the shaft to distribute the total load of the car (usually carrying 800-2000kg) and the counterweight (up to 3000kg or more) to multiple support points, avoiding excessive pressure on the bracket and limiting the deflection (bending deformation) of the guide rail within 0.5mm/m.
5、 Collaborative components: Collaborative load-bearing of guide shoes and rails
      The load-bearing capacity of the guide rail also depends on the coordination of the guide shoe (the part of the car/counterweight that contacts the guide rail):
      Guide shoes (such as rolling guide shoes and sliding guide shoes) evenly transmit the load of the car to the guide rail working surface through elastic structures (springs, rubber pads), avoiding stress concentration caused by local point contact;
      The rolling guide shoes of high-speed elevators adopt a bearing structure to convert sliding friction into rolling friction, reducing friction while ensuring the stability of load transmission.
四虎影视库| 国产韩国精品一区二区三区| 日日日夜夜操| 免费一级片网站| 韩国三级一区| 91麻豆精品国产自产在线观看一区| 亚洲精品中文字幕久久久久久| 日韩在线观看免费| 国产网站免费视频| 国产精品123| 国产一级强片在线观看| 国产极品白嫩美女在线观看看| 99热精品一区| 天天做日日爱夜夜爽| 999精品在线| 日韩av成人| 国产91精品一区二区| 国产一级强片在线观看| 日韩专区第一页| 欧美大片a一级毛片视频| 日韩在线观看视频网站| 日本免费乱理伦片在线观看2018| 日韩专区在线播放| 精品国产亚洲一区二区三区| 国产伦精品一区三区视频| 亚洲精品久久玖玖玖玖| 四虎影视久久久| 久久精品免视看国产明星| 免费国产在线观看| 免费的黄视频| 国产麻豆精品hdvideoss| 精品视频在线看| 欧美a级成人淫片免费看| 美国一区二区三区| 久草免费资源| 欧美国产日韩在线| 日本免费看视频| 精品视频在线观看一区二区| 99久久精品国产片| 欧美一区二区三区性| 日韩中文字幕在线观看视频| 欧美爱爱动态| 九九九在线视频| 一级女性全黄久久生活片| 91麻豆精品国产高清在线| 国产美女在线观看| 午夜精品国产自在现线拍| 四虎论坛| 国产一级生活片| 九九热国产视频| 高清一级做a爱过程不卡视频| 成人免费观看视频| 国产视频久久久| 日韩在线观看免费| 免费国产一级特黄aa大片在线| 免费一级片在线观看| 国产一级生活片| 精品国产亚一区二区三区| 九九精品久久| 欧美激情一区二区三区在线 | 精品在线免费播放| 国产不卡高清在线观看视频| 精品在线免费播放| 免费一级片网站| 国产伦理精品| 国产伦精品一区二区三区在线观看| 精品久久久久久综合网| 免费一级生活片| 天天色色色| 日本久久久久久久 97久久精品一区二区三区 狠狠色噜噜狠狠狠狠97 日日干综合 五月天婷婷在线观看高清 九色福利视频 | 国产a毛片| 日本特黄特黄aaaaa大片| 久久国产一区二区| 久久福利影视| 日韩在线观看视频网站| 国产成人啪精品| 国产伦理精品| 日本特黄特色aaa大片免费| 国产一区二区精品久久91| 欧美日本免费| 精品国产亚洲一区二区三区| 精品国产一区二区三区精东影业| 好男人天堂网 久久精品国产这里是免费 国产精品成人一区二区 男人天堂网2021 男人的天堂在线观看 丁香六月综合激情 | 99色视频在线观看| 国产极品精频在线观看| 日韩中文字幕在线播放| 精品毛片视频| 国产综合成人观看在线| 二级片在线观看| 国产伦久视频免费观看 视频 | 久久99中文字幕| 国产成人啪精品| 麻豆系列国产剧在线观看| 亚洲 男人 天堂| 久久成人亚洲| 国产精品免费久久| 国产麻豆精品视频| 成人免费观看网欧美片| 国产不卡精品一区二区三区| 一级女人毛片人一女人| a级毛片免费观看网站| 日日日夜夜操| 999久久66久6只有精品| 亚洲 欧美 91| 青青青草影院| 国产一区二区福利久久| 日韩欧美一二三区| 日韩欧美一二三区| 亚洲第一视频在线播放| 久久久久久久网| 久久精品人人做人人爽97| 香蕉视频三级| 亚洲 男人 天堂| 四虎影视库| 中文字幕一区二区三区精彩视频 | 美女免费精品视频在线观看| 你懂的在线观看视频| 欧美激情一区二区三区视频 | 成人免费一级毛片在线播放视频| 国产成+人+综合+亚洲不卡| 黄色福利片| 欧美夜夜骑 青草视频在线观看完整版 久久精品99无色码中文字幕 欧美日韩一区二区在线观看视频 欧美中文字幕在线视频 www.99精品 香蕉视频久久 | 国产一区免费观看| 久久精品大片| 日本在线不卡免费视频一区| 一级女性全黄生活片免费| 麻豆午夜视频| 欧美另类videosbestsex| 国产网站在线| 国产一区二区精品久| 久久国产一久久高清| 国产亚洲男人的天堂在线观看| 四虎影视久久久| 天天做人人爱夜夜爽2020| 台湾毛片| 999久久66久6只有精品| 日韩在线观看视频免费| 精品国产亚一区二区三区| 日韩中文字幕在线亚洲一区| 亚洲第一色在线| 精品国产一区二区三区国产馆| 欧美激情一区二区三区在线| 91麻豆高清国产在线播放| 青青青草视频在线观看| 国产91视频网| 高清一级片| 欧美一级视频免费观看| 久久久久久久久综合影视网| 国产成人女人在线视频观看| 国产伦精品一区二区三区在线观看| 精品国产香蕉在线播出| 亚久久伊人精品青青草原2020| 久久99这里只有精品国产| 国产一区二区精品久| 国产伦精品一区二区三区无广告| 天天做日日爱| 天天做人人爱夜夜爽2020毛片| 日韩avdvd| 麻豆系列国产剧在线观看| 亚洲精品中文一区不卡| 日韩中文字幕在线播放| 国产视频在线免费观看| 日韩一级黄色片| 成人免费一级毛片在线播放视频| 国产91素人搭讪系列天堂| 国产国语对白一级毛片| 国产成人精品综合久久久| 欧美国产日韩久久久| 国产视频一区二区在线播放| 二级特黄绝大片免费视频大片| 尤物视频网站在线观看| 日本免费乱理伦片在线观看2018| 黄视频网站在线免费观看| 亚欧视频在线| 天天色成人| 毛片高清| 亚洲精品中文字幕久久久久久| 国产一区二区福利久久| 精品视频一区二区三区| 黄色福利片| 国产视频久久久| 91麻豆精品国产片在线观看| 久久精品大片| 免费一级片网站| 日韩在线观看免费| 韩国三级视频网站| 国产a网| 精品国产三级a∨在线观看| 久草免费在线色站| 日韩男人天堂| 国产成人欧美一区二区三区的| 欧美1卡一卡二卡三新区| 成人免费观看视频| 九九九在线视频| 成人高清免费| 亚欧成人毛片一区二区三区四区| 日韩中文字幕在线播放| 精品国产一区二区三区国产馆| 日韩在线观看视频网站| 一本伊大人香蕉高清在线观看|