SU413267A1 - - Google Patents

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Publication number
SU413267A1
SU413267A1 SU1725907A SU1725907A SU413267A1 SU 413267 A1 SU413267 A1 SU 413267A1 SU 1725907 A SU1725907 A SU 1725907A SU 1725907 A SU1725907 A SU 1725907A SU 413267 A1 SU413267 A1 SU 413267A1
Authority
SU
USSR - Soviet Union
Prior art keywords
nut
shaft
wheel
pitch
impeller
Prior art date
Application number
SU1725907A
Other languages
Russian (ru)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to SU1725907A priority Critical patent/SU413267A1/ru
Application granted granted Critical
Publication of SU413267A1 publication Critical patent/SU413267A1/ru

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  • Turbine Rotor Nozzle Sealing (AREA)

Description

1one

Изобретение относитс  к турбостроению.FIELD: turbine engineering.

Известны устройства дл  креплени  рабочего колеса турбомашины, установленного на валу, содержаи,ие гайку с внутренней резьбой , навинченную на вал. Однако они требуют дл  разборки специальный съемник.Devices are known for fastening an impeller of a turbomachine mounted on a shaft, containing a nut with an internal thread that is screwed onto the shaft. However, they require a special puller for disassembly.

Предлагаемое устройство отличаетс  от известных тем, что гайка дополнительно имеет наружную нарезку с шагом, меньшим шага внутренней резьбы, и ввинчена в резьбовое отверстие , выполненное в рабочем колесе. Это упрошает демонтаж рабочего колеса.The proposed device differs from the known ones in that the nut additionally has an external threading with a pitch smaller than the pitch of the internal thread, and is screwed into a threaded hole made in the impeller. This prompts the removal of the impeller.

На чертеже показано описываемое устройство .The drawing shows the described device.

На валу 1 установлено рабочее колесо 2, ориентированное шпонкой 3 и зат нутое гайкой 4 с резьбовой нарезкой по внутреннему и наружному диаметрам.On the shaft 1 there is an impeller 2, oriented with a key 3 and tightened with a nut 4 with threading in internal and external diameters.

Монтаж колеса осуи1,ествл етс  следуюшим образом.The mounting of the axle wheel is as follows.

Гайка 4 ввинчиваетс  на один-два витка в колесо 2, затем колесо вместе с гайкой надеваетс  на вал 1, ориентиру сь по шпонке 3, и далее гайка навинчиваетс  на резьбовой конец вала. При этом колесо иеремеш,аетс  относительно вала за один оборот гайки на величину , равную рпзностн шагов резьбовых нарезок на внутреннем н наружном диаметрах гайки. Это условие уменьшает момент зат жкн , т. е, момент зат жки становитс  таким, каким был бы он на -обычной гайке с шагом резьбы, равным разности шагов описываемой гайки. При обратном врашении гайка свинчиваетс  с вала и вывинчиваетс  с колеса иThe nut 4 is screwed on one or two turns into the wheel 2, then the wheel together with the nut is put on the shaft 1, guided by the key 3, and then the nut is screwed onto the threaded end of the shaft. At the same time, the wheel is mixed with respect to the shaft for one turn of the nut by an amount equal to the ppn of the steps of the threaded cuts on the inner and outer diameters of the nut. This condition reduces the tightening torque, i.e., the tightening torque becomes as it would be on an ordinary nut with a thread pitch equal to the difference in the steps of the described nut. When reversing the nut, it is screwed off the shaft and unscrewed from the wheel and

благодар  тому, что шаг внутренней резьбы больше шага наружной, колесо снимаетс  с вала.due to the fact that the internal thread pitch is larger than the external pitch, the wheel is removed from the shaft.

Предмет изобретени Subject invention

Устройство дл  крепленн  рабочего колеса турбомашины, установленного на валу, содержашее гайку с внутренней резьбой, навннченную на вал, о т л и ч а ю HJ. е е с   тем, что, с целью упрощени  демонтажа, гайка дополнительно имеет наружную нарезку с нтагом, меньшим шага внутренней резьбы, и ввинчена в резьбовое отверстие, выполненное в рабочемA device for fastening the impeller of a turbomachine mounted on a shaft, containing a nut with a female thread, mounted on the shaft, about HL. This is due to the fact that, in order to simplify dismantling, the nut additionally has an external thread with a thread smaller than the pitch of the internal thread, and is screwed into a threaded hole made in the working

колесе.the wheel.

SU1725907A 1971-12-17 1971-12-17 SU413267A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU1725907A SU413267A1 (en) 1971-12-17 1971-12-17

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU1725907A SU413267A1 (en) 1971-12-17 1971-12-17

Publications (1)

Publication Number Publication Date
SU413267A1 true SU413267A1 (en) 1974-01-30

Family

ID=20496533

Family Applications (1)

Application Number Title Priority Date Filing Date
SU1725907A SU413267A1 (en) 1971-12-17 1971-12-17

Country Status (1)

Country Link
SU (1) SU413267A1 (en)

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