Razvoj kombiniranega hidravličnega protipovratnega in zavornega ventila

Krivec, Rok (author), Majdič, Franc (mentor)

Problematika posedanja bremen in sunkovitih gibov je v hidravliki stalni problem. Zato smo v sklopu zaključne naloge razvili in testirali nov KPPV, s katerim bi lahko odpravili problematiko posedanja, hkrati pa podaljšali čas pospeševanja ob začetku dviganja bremena. Potrebno je bilo na novo zasnovati in izdelati celotni ventil, preoblikovati in prilagoditi sestavne dele, da smo dosegli čim lažjo izdelavo ter ohranili preprostost ventila in uporabili čim več standardnih komponent. Z meritvami smo dokazali, da smo razvili dobro delujoč ventil, ki nam omogoča počasnejše speljevanje bremena ob začetku dviganja in ob pravilni izdelavi komponent odpravi problematiko posedanja bremena. Z različnimi vgradnjami zaslonk in malih protipovratnih ventilov ter zamenjavo vzmeti v ventilu lahko spreminjamo njegove karakteristike in odzivnost ventila, brez da spreminjamo njegove izdelane sestavne dele.

• Language: Slovenian
• Keywords: hidravlika, protipovratni ventil, zavorni ventil, držanje bremena, posedanje, notranje puščanje, pospeševanje bremena, zaustavitev bremena
• Work type: Final paper
• Typology: 2.11 - Undergraduate Thesis
• Organization: FS - Faculty of Mechanical Engineering
• Place of publishing: Ljubljana
• Publisher: [R. Krivec]
• Year: 2020
• Number of pages: XIV, 28 f.
• PID: 20.500.12556/RUL-119102
• UDC: 621.22:621.646.2(043.2)
• COBISS.SI-ID: 28026627
• Publication date in RUL: 03.09.2020

Secondary language

• Language: English
• Title: Development of a combined hydraulic ceheck and brake valve

Abstract

Problems with load carrying and fast movements are constant problems in hydraulics. As part of our diploma thesis, we developed and tested a new combined hydraulic check and brake valve, which enabled us to eliminate load pickup and increase the acceleration time at the beginning of lifting loads. We had to rebuild and remanufacture the valve and adapt some parts, so that we simplified the manufacturing process of the valve and could use as many standard parts as possible. Tests have proven that we have developed a good and functional valve with longer acceleration times at the beginning of lifting loads, and with the precision manufacturing we can almost eliminate the load support as there is almost no leakage. With different orifices and small check valves and different springs we can change the characteristics of the valve without changing its main components.

• Keywords: hydraulics, valve, check valve, brake valve, holding load, lowering, leakage, load acceleration, load deceleration