Thu, 2 Sep 2010|
Dave Dalrymple takes a look at some cutting techniques for vehicle extrication, including cuts used to weaken the vehicle structure. Sponsored by Holmatro.
Now we've stabilize a vehicle we've assessed the scene there's no hazards we've taken a glass out. We have our patience protected. Now I have to think about what kind of pathway we need to develop to get our patients to some tangled and out of the vehicle onto the street. Now we'll things to think about what this methodology -- today we need to strategically cut -- sometimes to help weaken the vehicle structure. Now part of that process is -- tool evolution called offender and or fender lift. We're gonna actually sever the front crumple zone of the vehicle. -- -- facilitate. Offender evolution what we want to do. If we -- -- reach in and find out front suspension. -- -- we do that we don't wanna cut through the strike for the spring. Back. The first -- -- make it vertically in line with that. Suspension. Once we've done that we're gonna -- and we're gonna cut the bottom of the. -- -- -- -- -- -- The rocker. And we just want to help defender though that's important we don't want that to -- which ones over the -- Want things to remember. Just like any kind of action -- evolution they don't always -- this plan. Good example was this. This got an inner fender well made out of steel which fairly rare today -- might find it on certain vehicles especially high -- vehicle. With a -- fender well that's simple vendor list we're gonna cut. At that -- with a suspension caught. At the bottom of the eighth post -- without isn't gonna work. You're gonna need to facilitate. Simultaneous operation means cutting and spreading to move that -- -- away from here that there well. And work your operate that -- This way it'll expose our crumple zone. But you'll notice will also exposed -- into the poor -- Which -- facilitates it off right off the bat well. Now we're ready to go to sever our crumple -- based there crumple zone there's this whole area right here. The reason why and each crumple zone will look a little different. Some might be a hole so might be a coordination. Some might be dimpled -- -- the -- basically that's an engineered location in that vehicle. That wants to absorb energy -- -- crash and that will -- for itself. Absorb the energy keep -- away from the occupant. The reason why were making that vertical cut into the crumple zone. Is to isolate the dash from the rest of the vehicle when we go back and move the -- whether we're we're gonna with a dash -- roll the dash. That vertical cut will allow that -- to move independently of the rest of the vehicle. It also weakens the vehicle structure. In the operation to that facilitates. Our -- -- of things one it releases some energy in the vehicle structure itself but by helping the structure -- we it will help the war. Yeah on the road.