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Understanding Major Components: Linkage and Articulation

5:24
10:33
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At 5:24 in

Payloader Basics for beginners- how to run, operate & understand Heavy equipment part 1

What happens here

The video provides a detailed walkaround of the wheel loader, explaining its main functional components. This includes the 'loader linkage' (lift arms and bucket linkage) that raises, tilts, and curls the bucket using hydraulic cylinders. It also covers the machine's 'articulation point' in the center, where the front and rear frames connect via pins and bushings. This articulation allows the machine to steer by 'bending' in the middle, enabling the front and rear wheels to track in the same line for tighter turns compared to conventional vehicles.

Goal: Familiarize with the mechanical systems responsible for movement and material handling

Tools and materials

  • Volvo L120H Wheel Loader Volvo — The machine whose components are being explained

What they say

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So, let's do a quick walk around on the machine and get familiar with the different components of it cuz I'm going to guess that everything you say to her is going to be brand new. And so, a lot of the guys and gals watching this may be brand new to them as well. So, let's explain what it is. Let's just talk about this machine real briefly so guys know exactly what they're getting into. Okay. Well, well, like I mentioned, we have our bucket. This is the the component we use to fill and move the material. Um, next we have our lift arms and we call this our our loader linkage. So, basically we have the lift arm system with our hydraulic cylinders that lift the whole the whole frame. And then we call this our our loader and bucket linkage. So, this is the the the portion that tilts the bucket. So, we have a a hydraulic cylinder connected to that as well that'll actually tilt and curl the bucket back. These are universal systems, but if these guys aren't running a Volvo loader, they may not find them in the same spot. Just so people know, the linkages can vary. The lift arms fairly standard. I mean there's some if you go back years and years ago we used to have they used to have like mono booms like a single boom that that that a couple different manufacturers use but but more more or less now in this day and age everyone's using like a two arm design and then you know depending on the the manufacturer um they use really two different styles of linkage a parallel style linkage like we have now and then uh we also have what we call a Zbar linkage. Next, as we walk back, you can see we have the loader is articulated in the center. So, we have basically um two different portions of a frame. We have a front frame. Um and the connection between these two frames are made by two two pins. This is what we call our articulation point. Um so, we have um pins here and pins and bushings up here along with our steer cylinders um which actually turn the machine. So they'll turn the front of the machine. Next we have the rear frame. So the rear frame houses the engine. um the mo the the bulk of the drive line um to to to power to power the machine and and and move you forward. You can see the cab is positioned in towards the rear of that so you have really good visibility over what's going on. So if you we we literally can cut this machine right in half. If you look straight down here you can see that the cab is on the back side of it. Right there is the framework. This is…

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