PL99495B1 - PRESS CYLINDER ESPECIALLY FOR FORK TRUCKS - Google Patents

PRESS CYLINDER ESPECIALLY FOR FORK TRUCKS Download PDF

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Publication number
PL99495B1
PL99495B1 PL17399974A PL17399974A PL99495B1 PL 99495 B1 PL99495 B1 PL 99495B1 PL 17399974 A PL17399974 A PL 17399974A PL 17399974 A PL17399974 A PL 17399974A PL 99495 B1 PL99495 B1 PL 99495B1
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PL
Poland
Prior art keywords
plunger
guiding
sleeve
cylinder
securing element
Prior art date
Application number
PL17399974A
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Polish (pl)
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 PL17399974A priority Critical patent/PL99495B1/en
Publication of PL99495B1 publication Critical patent/PL99495B1/en

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Description

Przedmiotem wynalazku jest cylinder nurnikowy zwlaszcza do wózków widlowych.Znany jest cylinder nurnikowy skladajacy sie z nurnika, dlawnicy i tulei zewnetrznej, na której ewentualnie znajduja sie róznego typu systemy mocujace go w róznych urzadzeniach w zaleznosci od jego przeznaczenia.W celu zabezpieczenia nurnika przed wypadnieciem na koncu nurnika jest wytoczony rowek, w który jest wlozona okragla, dzielona plytka o srednicy wiekszej od srednicy nurnika. Inne znane zabezpieczenie stanowia pierscienie Seeger'a lub przykrecona nakretka od strony dna nurnika plytka okragla o srednicy wiekszej od srednicy nurnika.Cylinder nurnikowy wedlug wynalazku posiada element prowadzaco-zabezpieczajacy nurnik w postaci krazka z nacietymi spiralnie na obwodzie zewnetrznym co najmniej trzema rowkami o przekroju pólkolowym.Element prowadzaco-zabezpieczajacy jest osadzony na nurniku za pomoca pierscienia sprezynujacego. Nurnik z elementem prowadzaco-zabezpieczajacym jest osadzony suwliwie w tulei. Powierzchnie wspólpracujace elemen¬ tu prowadzaco-zabezpieczajacego i tulei posiadaja gladkosc powierzchni od 0,63 do 2,5 /i.Dzieki zastosowaniu rowków na obwodzie uzyskuje sie równomierne zuzycie gladzi cylindra oraz zapewnia powstanie filmu olejowego na powierzchniach tracych. Element prowadzaco-zabezpieczajacy nie powoduje do¬ datkowych oporów przeplywu. Dodatkowa zaleta cylindra wedlug wynalazku jest wieksza dokladnosc we wspólosiowosci dzialania nurnika z tuleja cylindra oraz zabezpieczenie nurnika przed wypadnieciem.Przedmiot wynalazku jest przedstawiony w przykladzie wykonania w przekroju na rysunku. Cylinder skla¬ da sie z nurnika 1, dlawnicy 2 i tulei zewnetrznej 3. Cylinder posiada element prowadzaco-zabezpieczajacy 4 osadzony na nurniku 1 i za pomoca pierscienia sprezynujacego 5. Element prowadzaco-zabezpieczajacy 4 jest w postaci krazka z nacietymi spiralnie na obwodzie zewnetrznym rowkami o przekroju pólkolowym. Nurnik 1 z elementem prowadzaco-zabezpieczajacym 4jest osadzony suwliwie w tulei 3.N 2 99495 PLThe subject of the invention is a plunger cylinder, especially for forklift trucks. There is a known plunger cylinder consisting of a plunger, a gland and an outer sleeve, on which there are possibly various types of fixing systems in various devices depending on its intended use. In order to secure the plunger against falling out on at the end of the plunger there is a groove in which a circular, split plate with a diameter greater than that of the plunger is inserted. Another known protection is the Seeger rings or a screwed nut on the bottom of the plunger, a round plate with a diameter greater than the plunger diameter. The plunger according to the invention has a plunger guiding-securing element in the form of a disc with at least three grooves with a semicircular cross-section cut in a spiral on the outer perimeter. The guiding-securing element is mounted on the plunger by means of a spring ring. The plunger with the guiding-securing element is slidably mounted in the sleeve. The mating surfaces of the guiding-protection element and the sleeve have a surface smoothness of 0.63 to 2.5 µl. Due to the circumferential grooves, even cylinder liner wear is achieved and an oil film is formed on the slotted surfaces. The guiding-securing element does not cause any additional flow resistance. An additional advantage of the cylinder according to the invention is the greater accuracy in the coaxiality of the action of the plunger with the cylinder sleeve and the protection of the plunger against falling out. The subject of the invention is shown in the cross-sectional view in the drawing. The cylinder consists of a plunger 1, a gland 2 and an outer sleeve 3. The cylinder has a guiding-securing element 4 mounted on the plunger 1 and by means of a spring ring 5. The guiding-securing element 4 is in the form of a disc with spirally cut grooves on the outer circumference with a semi-circular cross-section. The plunger 1 with the guiding-protection element 4 is slidably mounted in the sleeve 3.N 2 99495 EN

Claims (1)

1. Zastrzezenie patentowe Cylinder nurnikowy zwlaszcza do wózków widlowych skladajacy sie z nurnika, dlawnicy i tulei zewne¬ trznej, znamienny tym, ze posiada element prowadzaco-zabezpieczajacy (4) nurnik (1) w postaci krazka z nacietymi spiralnie na obwodzie zewnetrznym co najmniej trzema rowkami o przekroju pólkolowym, osadzo¬ ny na nurniku (1) za pomoca pierscienia sprezynujacego (5), przy czym nurnik (1) z elementem prowadzaco-za- bezpieczajacym (4) jest osadzony suwliwie w tulei (3) cylindra, a powierzchnie wspólpracujace elementu prowa- dzaco-zabezpieczajacego (4) i tulei (3) posiadaja gladkosc powierzchni od 0,63 do 2,5 n. Prac. Poligraf. UP PRL naklad 120+18 Cena 45 zl PL1. Patent claim Plunger cylinder, especially for forklifts, consisting of a plunger, a gland and an external sleeve, characterized by the fact that it has a guiding-securing element (4) the plunger (1) in the form of a disc with at least three spiral cuts on the outer circumference grooves with a semicircular cross-section, mounted on the plunger (1) by means of a spring ring (5), the plunger (1) with the guiding-securing element (4) slidably mounted in the cylinder sleeve (3), and the mating surfaces the guiding-protection element (4) and the sleeve (3) have a surface smoothness of 0.63 to 2.5 n. Work. Typographer. UP PRL, circulation 120 + 18 Price PLN 45 PL
PL17399974A 1974-09-10 1974-09-10 PRESS CYLINDER ESPECIALLY FOR FORK TRUCKS PL99495B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL17399974A PL99495B1 (en) 1974-09-10 1974-09-10 PRESS CYLINDER ESPECIALLY FOR FORK TRUCKS

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL17399974A PL99495B1 (en) 1974-09-10 1974-09-10 PRESS CYLINDER ESPECIALLY FOR FORK TRUCKS

Publications (1)

Publication Number Publication Date
PL99495B1 true PL99495B1 (en) 1978-07-31

Family

ID=19968872

Family Applications (1)

Application Number Title Priority Date Filing Date
PL17399974A PL99495B1 (en) 1974-09-10 1974-09-10 PRESS CYLINDER ESPECIALLY FOR FORK TRUCKS

Country Status (1)

Country Link
PL (1) PL99495B1 (en)

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