四虎网站在线观看,亚洲人久久久综合网站,欧美狠狠鲁,黄色网络久久2

服務(wù)熱線: 400-117-8816
           13406879330

扭剪扳手,扭剪螺栓專用扳手,扭剪電動扳手,扭剪槍生產(chǎn)廠家

當前位置:首頁>技術(shù)文獻高強螺栓易松動的原因

高強螺栓易松動的原因

來源:http://www.8ying.cn日期:2022-08-23 發(fā)布人:admin

探究高強螺栓易松動的原因,一種是客觀原因,由于機械運動,該螺栓防松不好等而引起松動;還有一種是人為因素,因疏忽而沒有擰緊等。(我們從客觀和人為原因量方便做分析)

Explore the reasons why high-strength bolts are easy to loosen. One is the objective reason, which is caused by mechanical movement and poor anti loosening of the bolts; There are also human factors, such as failure to tighten due to negligence. (we analyze it from objective and human factors)
具體客觀原因
Specific objective reasons
1 、螺栓質(zhì)量差。 螺栓防松不好往往與螺栓的制造精度不高、防松設(shè)計缺陷有關(guān)。 如華夏塔吊的高強螺栓的防松螺母明顯偏窄,其防松效果自然就差一些。
1. Poor bolt quality. The poor anti loosening of bolts is often related to the low manufacturing accuracy of bolts and the defects of anti loosening design. For example, the locknut of the high-strength bolt of Huaxia tower crane is obviously narrow, and its anti loosening effect is naturally poor.
2 、螺紋牙滑扣。 如螺栓多次裝拆,可能發(fā)生螺紋牙滑扣現(xiàn)象,導致螺栓松動。
2. Thread thread sliding buckle. If the bolts are installed and disassembled for many times, the thread thread may slip, resulting in loosening of the bolts.
3 、螺紋斜面間的摩擦力瞬時消失或減小。 塔機在工作中,經(jīng)常受到振動、沖擊和變載荷作用,或者溫度變化很大環(huán)境節(jié),這樣,螺栓連接中的螺紋斜面間的摩擦力就可能瞬時消失或減小。這種現(xiàn)象的多次重復出現(xiàn)就會使連接逐漸松脫,影響連接的剛性及緊密性。
3. The friction between the inclined surfaces of the thread disappears or decreases instantaneously. The tower crane is often subjected to vibration, impact and variable load during operation, or the temperature changes greatly. In this way, the friction between the thread slopes in the bolt connection may disappear or decrease instantaneously. Repeated occurrence of this phenomenon will gradually loosen the connection and affect the rigidity and tightness of the connection.
具體人為原因
Specific human causes
1、人為疏忽。由于個別安裝人員的疏忽而導致部分螺栓未緊固,而檢查人員因疏忽而未發(fā)現(xiàn)。這里需要著重強調(diào)對安裝人員、頂升作業(yè)人員、操作人員的技術(shù)交底,強調(diào)安裝、頂升工序完成后的自檢、互檢,防止遺漏高強度螺栓的擰緊,防止這種嚴重隱患的發(fā)生和存在。
1. Human negligence. Some bolts were not fastened due to the negligence of individual installers, but the inspectors did not find them due to negligence. Here, it is necessary to emphasize the safety technical disclosure to the installation personnel, jacking operators and operators, and the self inspection and mutual inspection after the completion of the installation and jacking procedures to prevent the omission of tightening of high-strength bolts and the occurrence and existence of such serious safety hazards.
2、工具原因。由于無專用扳手或力矩扳手,作業(yè)人員只能憑各自的經(jīng)驗或感覺對螺栓緊固,每個人的力量各不相同,導致各個螺栓的預緊力矩不同,當同一連接處的一組連接副預緊力相差過大時,各連接副的螺栓所承受的軸向力就相差很大,預緊力大的螺栓長期處于重載荷下,容易產(chǎn)生螺栓松動及疲勞斷裂等情況。
2. Tool reason. Since there is no special wrench or torque wrench, the operators can only fasten the bolts according to their own experience or feeling. The strength of each person is different, resulting in different pretightening torques of each bolt. When the pretightening force of a group of connection pairs at the same connection is too large, the axial force borne by the bolts of each connection pair is very different. The bolts with large pretightening force are under heavy load for a long time, which is prone to bolt loosening and fatigue fracture.
以上就是為大家介紹的有關(guān)扭剪扳手廠家的詳細的介紹,希望對您有所幫助.如果您有什么疑問的話,歡迎聯(lián)系我們.我們將以的態(tài)度,為您提供服務(wù)http://www.8ying.cn
The above is the detailed introduction of the torsion shear wrench manufacturer. I hope it will help you. If you have any questions, please contact us. We will provide you with services with a professional attitude http://www.8ying.cn

99久久综合精品国产首员无码| 日韩精品一区二区三区欧美| 素股中文字幕一区二区三区| 熟女无码口| 神马久久久久久久| 美女av免费在线看| 中文字幕一区二三区久久人妻网站 | 大香蕉插插插插插插| 久热这里有精品国产| 卡成人福利视频| 日本成人中文字幕网址| 欧日韩成人 视频在线观看| 两人日B视频免费看| 麻豆国产三级片| 在线观看干鸡八| 午夜福利久久| 国产自产精| 自拍偷拍亚洲在线吃瓜欧美| 啪网站上免费| 蜜桃av综合| 久久精品一区蜜乳| 台湾佬中文美性| 久久无码一中文字幕| 久久久国产精品麻豆| 综合一本久久| 婷婷久久91| 国产人体一区二区| 欧洲精品久久久| 麻豆一区二区三区传媒日日躁夜夜躁| 狠狠88久久综合| 亚洲天堂在线播放一区不卡| 中文字幕亚洲综合久久菠萝蜜| 久久久福利视频在线观看| 肉色超薄丝袜脚交一区二区三区| 亚洲黄色电影图片人妻| 亚洲精品国产91| 少妻内射在线| 国产日本欧美在线播放一区二区三区 | 亚洲网红视频一区| 久久精品国产欧美国产首页| 美女干插|