A gap sensor 4a, which detects a gap between the sensor and the end surface of the elongation- difference detecting rod 3, is fixed to the other end part of the tightening bolt 1. The stress elongation of the tightening bolt 1 is measured based on the output of the gap sensor 4a....
and upper end 14 of internal hollow sleeve 12. The initial tightening and relative tightening of ratchet collar 52 against the internal shaft ratchets 19 may be performed by hand or with an appropriate tool. For added tightness, a hole 29 may be drilled through the shank 20 immediately below ...
said bore threads of uniform leads mating without interference with said bolt threads over said first portion of said bore when said nut is threaded on the bolt and advanced in a tightening direction by rotation of the nut, said bore threads of decreasing lead producing progressive interference wi...
Inordertogetandpredictinitialsupportpressure,mechanicalmodelsofbolt’Sstressandbolt’Sinstallationwereestablished,basedonthehypothesisonsurroundingrockofimmediateboltsupportinelastic-plasticstatus.Therelationshipbetweeninitialsupportpressureandtighteningtorquewasanalyzed,andtheoreticalsolutionstoinitialsup-portpressurewere...
Tighten the high strength bolts should be divided into the initial and final tightening screw. For large nodes should be divided into early twist, double twist, twist end. The initial tightening torque for the construction torque of about 50%, double twist torque is equal to the initial ...
In order to obtain a uniform preload, the initial load of each bolt is calculated according to an elastic interaction matrix. This research has improved the tightness of aviation components and the real-life efficiency of tightening process planning. Keywords: aviation component; elastic interaction;...
The design of the flexible tightening mechanism can easily and quickly tighten the engine bolts. Through the optimization of bolt tightening, the deformation and stress of the engine during the tightening process are reduced, and the residual pre-tightening force of the bolt is increased and evenly...
The frame 12d mounts an expansion shell 12e, the latter having wings 12e' which move outwardly and into gripping relationship with the interior of the bolt hole 11 upon the tightening of the roof bolt 12. The preceding relationship is known and requires no further discussion herein. The seal...
Strength and initial stiffness of a blind-bolt connection based on the 文档格式: .pdf 文档大小: 2.6M 文档页数: 13页 顶/踩数: 0/0 收藏人数: 0 评论次数: 0 文档热度: 文档分类: 待分类 文档标签: Strengthandinitialstiffnessofablind-boltconnectionbasedon ...
The units work with most bolt tightening systems and are used to monitor the fastener during the tightening process to ensure accurate initial loading. The retained load in the fastener can then be monitored at any time. The Echometer Premier is our premium product with enhanced features and soft...