1. Composici\u00f3n de la estructura central
La plataforma elevadora de tijera se compone principalmente de cuatro m\u00f3dulos: estructura mec\u00e1nica, sistema de alimentaci\u00f3n, sistema de control y sistema de protecci\u00f3n de seguridad.<\/p>\n\n\n\n
Parte mec\u00e1nica: Se utilizan como elemento central varios conjuntos de brazos en forma de tijera fabricados en acero al manganeso de alta resistencia, que forman una estructura de soporte en forma de X mediante la articulaci\u00f3n cruzada de los ejes con pasador, combinados con una base y una plataforma de trabajo. Algunos modelos m\u00f3viles tambi\u00e9n est\u00e1n equipados con ruedas de desplazamiento y mecanismos de direcci\u00f3n.
Secci\u00f3n de potencia: La opci\u00f3n m\u00e1s habitual es el accionamiento hidr\u00e1ulico, compuesto por una estaci\u00f3n hidr\u00e1ulica y cilindros hidr\u00e1ulicos; algunos dispositivos peque\u00f1os utilizan motores paso a paso combinados con accionamientos de husillo para generar potencia.
Sistema de control: PLC integrado, botones de mando y mando a distancia, que permiten un control preciso del inicio y la parada de la elevaci\u00f3n, as\u00ed como el ajuste de la velocidad.
Secci\u00f3n de seguridad: incluye v\u00e1lvula de rebose, v\u00e1lvula unidireccional de control hidr\u00e1ulico, interruptor de fin de carrera, abrazadera de seguridad antica\u00edda y otros componentes, para garantizar la seguridad de las operaciones en situaciones de emergencia.
2. Principio de funcionamiento
Se basa en la extensi\u00f3n y la retracci\u00f3n del brazo en tijera para realizar la subida y bajada verticales de la plataforma:
Cuando el modelo de accionamiento hidr\u00e1ulico est\u00e1 en funcionamiento, el motor acciona la bomba hidr\u00e1ulica para convertir la energ\u00eda mec\u00e1nica en energ\u00eda de presi\u00f3n del aceite hidr\u00e1ulico. El aceite a presi\u00f3n entra en el cilindro hidr\u00e1ulico a trav\u00e9s del grupo de v\u00e1lvulas para empujar el v\u00e1stago del pist\u00f3n y hacer que se expanda y se contraiga, lo que acciona el punto de articulaci\u00f3n del brazo en tijera para que se expanda o se contraiga hacia fuera o hacia dentro. El empuje horizontal se convierte en la fuerza de elevaci\u00f3n vertical de la plataforma, lo que permite un movimiento ascendente o descendente suave de la misma.
La versi\u00f3n accionada por husillo utiliza un motor paso a paso para hacer girar el husillo, impulsar el movimiento de traslaci\u00f3n de la tuerca del husillo, tirar del brazo en tijera para completar el movimiento de apertura y cierre, y lograr la elevaci\u00f3n de la plataforma. Durante el dise\u00f1o, es necesario controlar el \u00e1ngulo de presi\u00f3n del mecanismo para evitar un consumo excesivo de potencia ineficaz.<\/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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