1. Composition de la structure centrale
La plate-forme \u00e9l\u00e9vatrice \u00e0 ciseaux se compose principalement de quatre modules : la structure m\u00e9canique, le syst\u00e8me d'alimentation, le syst\u00e8me de commande et le syst\u00e8me de s\u00e9curit\u00e9.<\/p>\n\n\n\n
Partie m\u00e9canique : plusieurs ensembles de bras en ciseaux en acier au mangan\u00e8se \u00e0 haute r\u00e9sistance constituent le c\u0153ur du syst\u00e8me, formant une structure de support en X gr\u00e2ce \u00e0 l'articulation crois\u00e9e des axes \u00e0 goupille, associ\u00e9e \u00e0 une base et \u00e0 une plate-forme de travail. Certains mod\u00e8les mobiles sont \u00e9galement \u00e9quip\u00e9s de roues de d\u00e9placement et de m\u00e9canismes de direction.
Partie motrice : La solution la plus courante est l'entra\u00eenement hydraulique, compos\u00e9 d'une station hydraulique et de v\u00e9rins hydrauliques ; certains petits appareils utilisent des moteurs pas \u00e0 pas associ\u00e9s \u00e0 des entra\u00eenements \u00e0 vis pour assurer la transmission de puissance.
Syst\u00e8me de commande : automate programmable int\u00e9gr\u00e9, boutons de commande, t\u00e9l\u00e9commande, permettant un contr\u00f4le pr\u00e9cis du d\u00e9marrage, de l'arr\u00eat et du r\u00e9glage de la vitesse de levage.
Section de s\u00e9curit\u00e9 : comprenant une soupape de d\u00e9charge, un clapet anti-retour \u00e0 commande hydraulique, un interrupteur de fin de course, un dispositif de s\u00e9curit\u00e9 anti-chute et d'autres composants, afin de garantir la s\u00e9curit\u00e9 des op\u00e9rations en cas d'urgence.
2. Principe de fonctionnement
Il repose sur le d\u00e9ploiement et le repliement du bras en ciseaux pour assurer le levage et l'abaissement verticaux de la plate-forme :
Lorsque le mod\u00e8le \u00e0 entra\u00eenement hydraulique est en fonctionnement, le moteur entra\u00eene la pompe hydraulique afin de convertir l'\u00e9nergie m\u00e9canique en \u00e9nergie de pression de l'huile hydraulique. L'huile sous pression p\u00e9n\u00e8tre dans le v\u00e9rin hydraulique via le groupe de vannes pour pousser la tige de piston \u00e0 se d\u00e9ployer et \u00e0 se r\u00e9tracter, ce qui entra\u00eene le point d'articulation du bras en ciseaux \u00e0 se d\u00e9ployer ou \u00e0 se r\u00e9tracter vers l'ext\u00e9rieur ou vers l'int\u00e9rieur. La pouss\u00e9e horizontale est convertie en force de levage verticale de la plate-forme, ce qui permet un mouvement fluide de la plate-forme vers le haut ou vers le bas.
La version \u00e0 vis utilise un moteur pas \u00e0 pas pour entra\u00eener la rotation de la vis, provoquer le d\u00e9placement longitudinal de l'\u00e9crou, tirer sur le bras en ciseaux afin d'effectuer le mouvement d'ouverture et de fermeture, et permettre le levage de la plate-forme. Lors de la conception, il est n\u00e9cessaire de contr\u00f4ler l'angle de pression du m\u00e9canisme afin d'\u00e9viter une consommation d'\u00e9nergie excessive et inefficace.<\/p>","protected":false},"excerpt":{"rendered":"
1\u3001 Core structure compositionThe scissor lift is mainly composed of four modules: mechanical structure, power system, control system, and safety 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