PL112754B2 - Locking device for screw-type lifting mechanisms especially for automobile jacks - Google Patents

Locking device for screw-type lifting mechanisms especially for automobile jacks Download PDF

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Publication number
PL112754B2
PL112754B2 PL20935778A PL20935778A PL112754B2 PL 112754 B2 PL112754 B2 PL 112754B2 PL 20935778 A PL20935778 A PL 20935778A PL 20935778 A PL20935778 A PL 20935778A PL 112754 B2 PL112754 B2 PL 112754B2
Authority
PL
Poland
Prior art keywords
nut
lever
screw
lifting mechanisms
securing
Prior art date
Application number
PL20935778A
Other languages
Polish (pl)
Other versions
PL209357A1 (en
Inventor
Janusz Golaszewski
Original Assignee
Zjednoczenie Transportu Samoch
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 by Zjednoczenie Transportu Samoch filed Critical Zjednoczenie Transportu Samoch
Priority to PL20935778A priority Critical patent/PL112754B2/en
Publication of PL209357A1 publication Critical patent/PL209357A1/en
Publication of PL112754B2 publication Critical patent/PL112754B2/en

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Description

Przedmiotem wynalazku jest urzadzenie zabezpiecza¬ jace srubowe mechanizmy podnoszenia, zwlaszcza dzwigników samochodowych, uniemozliwiajace prace urzadzenia w przypadku zerwania sie gwintu w nakretce nosnej.Znane dotychczas srubowe mechanizmy do podnosze¬ nia nosnika ciezaru skladajace sie ze sruby nosnej i nakretki nosnej posiadaja sprzezona suwliwie za pomoca zabieraków nakretke zabezpieczajaca z odpowiednio wmontowanym mikrowylacznikiem sygnalizujacym zer¬ wanie sie gwintu w nakretce nosnej.Taki stan urzadzenia umozliwia prace dzwignika w przypadku nie zadzialania obwodu mikrowylacznika.Zabezpieczenie dzwigników wedlug wynalazku polega na wylaczeniu silnika elektrycznego napedzajacego mechanizm srubowy z chwila zuzycia lub zerwania sie gwintu w nakretce nosnej, co osiagnieto przez zastosowa¬ nie dzwigni reagujacej na zuzycie sie gwintu nakretki nosnej.Urzadzenie wedlug wynalazku umieszczono pomiedzy nakretka nosna i zabezpieczajaca, które sa osadzone na srubie nosnej, korzystnie w odleglosci jednego skoku gwintu.Zostalo to rozwiazane, wedlug wynalazku w ten spo¬ sób, ze w górnej czesci nakretki zabezpieczajacej wyko¬ nano wyciecie materialu w postaci plaszczyzny celem umocowania sworznia na którym osadzono obrotowe ramie dzwigni. Ramie dzwigni za pomoca elementu spre¬ zystego jest oparte o dolna krawedz nakretki nosnej.Dzwignia jest zakonczona rolka dociskowa o ksztalcie walca, w którego plaszczyznie dzialania, na powierzchni kolumny nosnej jest ulozony nosnik cisnienia w postaci wypelnionego ciecza przewodu elastycznego. Przy usta¬ lonej wartosci zuzycia nakretki nosnej rolka dociskowa ma kontakt z przewodem elastycznym w celu uruchomie¬ nia wylacznika cisnieniowego.Zaleta zabezpieczenia wedlug wynalazkujest jego pro¬ sta konstrukcja, oraz mozliwosc przeniesienia wyla¬ cznika elektrycznego poza mechanizm srubowy.Przedmiot wynalazku jest przedstawiony w przykla¬ dzie wykonania na rysunku, na którym przedstawiono urzadzenie zabezpieczajace srubowe mechanizmy pod¬ noszenia.Na srubie nosnej 1 mechanizmu podnoszenia osa¬ dzona jest ponizej nakretki nosnej 2 nakretka zabezpie¬ czajaca 4 w odleglosci równej skokowi gwintu, która przed obracaniem sie zabezpiecza zabierak 3, utwier¬ dzony jednym koncem w nakretce nosnej 2, a drugim wpuszczony suwliwie w otwór nakretki zabezpieczajacej 4. Górna powierzchnia boczna nakretki zabezpieczajacej 4 uksztaltowana jest w postaci plaszczyzny na której w odpowiednim miejscu umieszczono os obrotu 5 dla dzwigni 6. Dzwignia 6 umocowana jest przy nakretce zabezpieczajacej 4 za pomoca osi obrotu 5 oraz posiada element sprezysty 8, który zapewnia*?tyk dolnej krawedzi nakretki nosnej 2 z ramieniem dzwigni 6. Koniec ramie¬ nia dzwigni 6 wyposazony jest w rolke dociskowa 7 wspólpracujaca z nosnikiem cisnienia 10, korzystnie3 112 754 4 przewodu cisnieniowego wypelnionego ciecza.Zmiany cisnienia w nosniku cisnienia 10 dzialaja na wylacznik 11.Zastrzezenia patentowe 1. Urzadzenie zabezpieczajace srubowe mechanizmy podnoszenia zwlaszcza dzwigników samochodowych zawierajacych srube z nakretka nosna i zabezpieczajaca, znamienne tym, ze nakretka zabezpieczajaca (4) posiada wybranie materialu w postaci plaszczyzny na której umieszczono os obrotu (5) dzwigni (6), przy czym dzwig¬ nia (6) oparta o nakretke nosna (2) wyposazona jest w rolke dociskowa (7) w celu uruchamiania wylacznika zespolonego z nosnikiem cisnienia (10). 2. Urzadzenie wedlug zastrz. 1, znamienne tym, ze dzwignia (6) polaczona jest z elementem sprezystym (8). 3. Urzadzenie wedlug zastrz. 1, znamienne tym, ze nos¬ nik cisnienia (10) sklada sie z elastycznego przewodu wypelnionego czynnikiem sprezystym w postaci gazu, korzystnie ciecza.Prac. Poligraf. UP PRL naklad 120+18 Cena 45 zl PLThe subject of the invention is a device securing screw lifting mechanisms, especially car jacks, preventing the operation of the device in the event of a thread breakage in a support nut. Known screw mechanisms for lifting a load carrier, consisting of a carrying bolt and a support nut, have a tightly coupled the drivers have a securing nut with an appropriately installed microswitch signaling the breaking of the thread in the support nut. Such a condition of the device enables the jack to work in the event of failure of the microswitch circuit. the nose nut, which was achieved by the use of a lever which responds to the wear of the nose nut thread. The device according to the invention is positioned between the nose nut and the nut, which are seated on the bearing screw, preferably in the distance of one thread pitch. This was solved, according to the invention, in that the upper part of the locking nut was cut into a plane material in order to fix the pin on which the rotating lever arm was seated. The lever arm is supported by an elastic element against the lower edge of the support nut. The lever is terminated with a pressure roller in the shape of a cylinder, in the operating plane of which there is a pressure carrier in the form of a liquid-filled flexible conduit on the surface of the support column. At a predetermined amount of wear of the carrier nut, the pressure roller is in contact with the flexible conduit in order to actuate the pressure switch. The advantage of the inventive security feature is its simple construction, and the possibility of transferring the electric switch beyond the screw mechanism. The subject of the invention is shown in example The drawing shows the device securing the screw lifting mechanisms. On the bearing bolt 1 of the lifting mechanism, a locking nut 4 is seated below the bearing nut 2 at a distance equal to the thread pitch, which protects the driver 3 against rotation, it is fixed with one end in the carrier nut 2, and the other end slid into the opening of the securing nut 4. The upper side surface of the securing nut 4 is shaped as a plane with the axis of rotation 5 for the lever 6 placed in the appropriate place. The lever 6 is attached to the nut security 4 a by means of an axis of rotation 5 and has an elastic element 8, which ensures the contact of the lower edge of the nose nut 2 with the lever arm 6. The end of the lever arm 6 is provided with a pressure roller 7 cooperating with a pressure carrier 10, preferably a pressure conduit filled with The pressure changes in the pressure carrier 10 act on the switch 11. Patent claims 1. A device securing screw lifting mechanisms, especially automotive jacks, containing a bolt with a nose nut and a securing nut, characterized by the fact that the securing nut (4) has a recess of the material in the form of a plane on which the axis of rotation (5) of the lever (6) is arranged, and the lever (6) supported on the support nut (2) is provided with a pressure roller (7) to actuate the switch combined with the pressure carrier (10). 2. Device according to claim A device according to claim 1, characterized in that the lever (6) is connected to the elastic element (8). 3. Device according to claim Process according to claim 1, characterized in that the pressure carrier (10) consists of a flexible conduit filled with an elastic medium in the form of a gas, preferably a liquid. Typographer. UP PRL, circulation 120 + 18 Price PLN 45 PL

Claims (3)

Zastrzezenia patentowe 1. Urzadzenie zabezpieczajace srubowe mechanizmy podnoszenia zwlaszcza dzwigników samochodowych zawierajacych srube z nakretka nosna i zabezpieczajaca, znamienne tym, ze nakretka zabezpieczajaca (4) posiada wybranie materialu w postaci plaszczyzny na której umieszczono os obrotu (5) dzwigni (6), przy czym dzwig¬ nia (6) oparta o nakretke nosna (2) wyposazona jest w rolke dociskowa (7) w celu uruchamiania wylacznika zespolonego z nosnikiem cisnienia (10).Claims 1. A device securing screw lifting mechanisms, especially automotive jacks, containing a bolt with a carrying and securing nut, characterized in that the securing nut (4) has a material recess in the form of a plane on which the axis of rotation (5) of the lever (6) is placed, whereby the lever (6) supported by the support nut (2) is equipped with a pressure roller (7) for the purpose of actuating the switch combined with the pressure carrier (10). 2. Urzadzenie wedlug zastrz. 1, znamienne tym, ze dzwignia (6) polaczona jest z elementem sprezystym (8).2. Device according to claim A device according to claim 1, characterized in that the lever (6) is connected to the elastic element (8). 3. Urzadzenie wedlug zastrz. 1, znamienne tym, ze nos¬ nik cisnienia (10) sklada sie z elastycznego przewodu wypelnionego czynnikiem sprezystym w postaci gazu, korzystnie ciecza. Prac. Poligraf. UP PRL naklad 120+18 Cena 45 zl PL3. Device according to claim 2. A method as claimed in claim 1, characterized in that the pressure carrier (10) consists of a flexible conduit filled with an elastic medium in the form of a gas, preferably a liquid. Wash. Typographer. UP PRL, circulation 120 + 18 Price PLN 45 PL
PL20935778A 1978-09-01 1978-09-01 Locking device for screw-type lifting mechanisms especially for automobile jacks PL112754B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL20935778A PL112754B2 (en) 1978-09-01 1978-09-01 Locking device for screw-type lifting mechanisms especially for automobile jacks

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL20935778A PL112754B2 (en) 1978-09-01 1978-09-01 Locking device for screw-type lifting mechanisms especially for automobile jacks

Publications (2)

Publication Number Publication Date
PL209357A1 PL209357A1 (en) 1979-07-30
PL112754B2 true PL112754B2 (en) 1980-10-31

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Family Applications (1)

Application Number Title Priority Date Filing Date
PL20935778A PL112754B2 (en) 1978-09-01 1978-09-01 Locking device for screw-type lifting mechanisms especially for automobile jacks

Country Status (1)

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PL (1) PL112754B2 (en)

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Publication number Publication date
PL209357A1 (en) 1979-07-30

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