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LES EXCAVATEURS DE TRANCHEES
Matériel didactique : craie de couleur
Objectif opérationnel : A la fin de cette leçon, l'élève sera capable de trancher sur les terrains qui conviennent et de travailler avec les excavateurs de tranchée.

 Révision

Les excavateurs à roues ont des godets de combien de litres ?

Révision

Les excavateurs à roues ont des godets de 150L.

 Motivation

Donnez un exemple des engins multi-godets ?

Motivation

Un exemple des engins multi-godets : Les excavateurs de tranchée.

Annonce du sujet

Qu'allons-nous étudier aujourd'hui ?

c) Annonce du sujet

Aujourd'hui, nous allons étudier les excavateurs de tranchée.

Analyse

Sur quoi l'excavateur de tranchée à l'elinde verticale monté ?

L'appareil a quels principes ?

Analyse

LES EXCAVATEURS DE TRANCHEES

Ces appareils sont d'un emploi courant. Ils servent à creuser des tranchées, en terrain meuble pour poser des canalisations :

D'eau, pipe-line etc ,...

Lorsque le terrain est dure, ou comprend une forte proportion de partie rocheuse, il est préférable de ne pas les employer et se rabattre sur la pelle mécanique travaillant en rétro.

On peut en distinguer plusieurs types :

C.3.1. EXCAVATEUR DE TRANCHEE A L'ELINDE VERTICALE

Cet appareil peut être monté sur une roue ou sur une chenille. L'elinde est maintenu dans une position verticale par deux bras articulés, reliant à la cabine. On abaisse ses bras et donc l'elinde, pour la position de travail et on les élève pour la position de transport,  les déblais sont remontés par des godets qui les déversent en passant sur le tourteau supérieur dans une goulette de chargement ou de mise en dépôt un cavalier sur les bords de la tranchée.

Les deux principales marques d'excavateur de tranchée (ou trancheuses) à elinde verticale sont bardes grune et alline.

C.3.2. EXCAVATEUR DE TRANCHEE A L'ELINDE INCLINABLE

Le principe de l'appareil est le même que celui décrit précédemment, mais l'elinde n'est pas assujettie à rester dans une position verticale et elle peut pivoter autour d'un axe horizontal, tout en restant cependant en ligne avec l'axe longitudinal d'ensemble.

Les principales marques sont bardées, grune, allen , barson davis. 

Comment est l'emploi des excavateurs de tranchée ?

Ces appareils appelés excavateurs de tranchée ont un emploi courant.

MessagesTimelineExceptionsViews7RouteQueries36Models48GateSessionRequest
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