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Fastener device and hydraulic pile hammer buffer sleeve
The invention discloses a fastener device and a hydraulic pile hammer buffer sleeve, the fastener device comprises a fastening bolt and a fastening nut, the fastening bolt comprises a screw rod and studs arranged at two ends of the screw rod, the studs are provided with external threads, the fastening nut is provided with internal threads matched with the external threads, and the internal threads are matched with the external threads. The thread form of the external thread on the stud is a thread form with a dip angle, a thread line has a dip angle of 0.3 degree relative to a thread axis, the thread form is of a conical structure within the length range of the thread, and the initial meshing end of the thread is the small end of the conical structure. By adopting the design of the thread form with the dip angle, the thread stress of the engaged part between the fastened parts tends to be uniform, the number of the stress buckling teeth can reach 8-12, the stress peak value is reduced by about 30%, the high stress value range is greatly reduced, the dangerous area prone to breakage is remarkably reduced, and the service life of the bolt is prolonged. And the strength and the service life of the fastener device and the buffer sleeve of the hydraulic pile hammer are improved.
本发明公开了一种紧固件装置及液压打桩锤缓冲套筒，该紧固件装置包括紧固螺栓和紧固螺母，紧固螺栓包括螺杆以及设置在螺杆两端的螺柱，螺柱上设置有外螺纹，紧固螺母设置有匹配于外螺纹的内螺纹，螺柱上的外螺纹的牙型为带倾角螺纹牙型，螺纹线相对于螺纹轴线具有0.3°的倾角，在螺纹长度范围内螺纹牙型成锥形构型，螺纹初始啮合端为锥形构型的小端。本发明通过采用带倾角螺纹牙型的设计，使得被紧固部件之间的啮合部位的螺纹受力趋于均匀，受力扣齿数量可达8～12扣齿，应力峰值下降30％左右且高应力值范围大大减少，易发生破碎断裂的危险区域显著减小，增加了紧固件装置及液压打桩锤缓冲套筒的强度和使用寿命。
Fastener device and hydraulic pile hammer buffer sleeve
The invention discloses a fastener device and a hydraulic pile hammer buffer sleeve, the fastener device comprises a fastening bolt and a fastening nut, the fastening bolt comprises a screw rod and studs arranged at two ends of the screw rod, the studs are provided with external threads, the fastening nut is provided with internal threads matched with the external threads, and the internal threads are matched with the external threads. The thread form of the external thread on the stud is a thread form with a dip angle, a thread line has a dip angle of 0.3 degree relative to a thread axis, the thread form is of a conical structure within the length range of the thread, and the initial meshing end of the thread is the small end of the conical structure. By adopting the design of the thread form with the dip angle, the thread stress of the engaged part between the fastened parts tends to be uniform, the number of the stress buckling teeth can reach 8-12, the stress peak value is reduced by about 30%, the high stress value range is greatly reduced, the dangerous area prone to breakage is remarkably reduced, and the service life of the bolt is prolonged. And the strength and the service life of the fastener device and the buffer sleeve of the hydraulic pile hammer are improved.
本发明公开了一种紧固件装置及液压打桩锤缓冲套筒，该紧固件装置包括紧固螺栓和紧固螺母，紧固螺栓包括螺杆以及设置在螺杆两端的螺柱，螺柱上设置有外螺纹，紧固螺母设置有匹配于外螺纹的内螺纹，螺柱上的外螺纹的牙型为带倾角螺纹牙型，螺纹线相对于螺纹轴线具有0.3°的倾角，在螺纹长度范围内螺纹牙型成锥形构型，螺纹初始啮合端为锥形构型的小端。本发明通过采用带倾角螺纹牙型的设计，使得被紧固部件之间的啮合部位的螺纹受力趋于均匀，受力扣齿数量可达8～12扣齿，应力峰值下降30％左右且高应力值范围大大减少，易发生破碎断裂的危险区域显著减小，增加了紧固件装置及液压打桩锤缓冲套筒的强度和使用寿命。
Fastener device and hydraulic pile hammer buffer sleeve
紧固件装置及液压打桩锤缓冲套筒
SU FANG (author) / REN YINYIN (author) / WANG BO (author)
2022-04-29
Patent
Electronic Resource
Chinese
IPC:
F16B
DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES
,
Vorrichtungen zum Befestigen oder Sichern von Konstruktionselementen oder Maschinenteilen, z.B. Nägel, Bolzen, Schrauben, Sprengringe, Klemmen, Klammern oder Keile
/
E02D
FOUNDATIONS
,
Gründungen
/
F16F
SPRINGS
,
Federn
| European Patent Office | 2021