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Trailer Components and Systems

Fri, 15 Jul 2011|

Steve White reviews trailer components and systems, focusing on points that can be used to stabilize these vehicles in the event of an accident.

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Automatically Generated Transcript (may not be 100% accurate)

-- Welcome to trading minutes my name is Steve White of the time -- -- the -- fire department. In this segment we're gonna go over trailer components. And systems. We're gonna start here at the nose of the trailer. These are where are glad and connections and run from the -- for service in parking brakes also we have. Our twelve volt connection that runs electrical power from the cab to the trailer. From there we're gonna look at the kingpin. The kingpin is -- the trailer connection to the -- at the fifth -- behind the kingpin is a big steel plate. It runs about four foot back in is the width of the trailer this can be a good place to stabilize the trailer. These are -- Dolly's they're located on every trailer for some. They crank up and down in place. This could become an advantage for us that if the dollars are not damage and actually we can lower the -- down. And help stabilize the trailer. But the dollars and let's take a look at the floor construction the floor of the trailer is the most stable part of the trailer. The floor joists run anywhere from ten. Eighteen inches on center and we stabilized building a box -- from the ground up to the underside of the trailer. This is exactly where we want to caption from our points of contact. You can read -- from the outside by the rivets what's known as the rail. On the underside of some trailers he'll be a bracket in place to hold simply a spare tire. One thing that we want to point out is that is not an acceptable spot to put curbing any time that we crib when one occur about the floor Joyce. Before we go into the trailer. Let's take a look at what we're gonna call a -- it's known by other names such as a DOT Barr RI CC bar we're just gonna called the bumper. -- size up evaluated if it's not been damaged it can be used -- stabilization. Keep your stabilization in line so we can transfer the load down to the ground if you're not sure. Go into the frame rails just inside and stabilize to each of the two friendly. -- We're sitting here in the back of the van trailer with the doors open. And we wanna talk about some construction features the floors can always be the strongest part because -- were important all of our way. Side walls -- roof are very -- They're designed to just protect the load from the elements nothing more -- the load is -- in an accident. Easily lean in and allow the wall and one times and leaving puncture and go out make the trailer completely week. Just like any other approach on an accident we use our Hazmat skills. Look at Packard's look at markings speak to the driver fees not incapacitated. When want to find out. What they're -- Typically there's not any urgency for us to open the doors because when we open the doors when -- swing out doors or roll up doors we have too conservative to load may have shifted. It can actually come down a personnel. So try to avoid open new doors at any cost during a trailer accident. The previous trailer with a that was what we commonly referred to as a van trailer or box trailer. This trailer is what we call reefer short for refrigeration. You'll notice the refrigeration unit are here at the top with a nose of the trailer. Typically will keep his running when it's been involved in accidents that we can save the perishable goods. In the trailer however if we think it's gonna cause -- hazard because it is a combustion engine we will have to shut it down. The controls -- typically here in the driver's side and they're easily labeled on and off. Another important feature with the reefer trailer is to fuel cell the fuel that runs to refrigeration unit is not supplied by the -- It's supplied by the trailer. This becomes a critical factor if it's been involved in the accident so we'll have the following normal Hazmat mitigation procedures if it's been compromised. Another key point is we don't want to stabilize this this is not a point for stabilization. Again we want to go to the floor Joyce to ensure good positive contact the stabilized the trail. This is a little boy detachable -- Basically -- used to haul heavy equipment. Rather than have that heavy equipment drive off of the back of the -- that it'll simply drive off the front wants -- cab. Pulls away interest detached. Between the two what we have are glad hands. For our emergency or parking. And our service points. One thing to remember is that once we disconnect these from any trailer. That we completely lock the breaks to the trailer. Then we have our twelve volt connection. This -- happens new Green which typically indicates that the trailer has analog breaks. And then because we have hydraulics and all we have to hydraulic connections and operate just like hydraulic tools and there's an. In and an out of return. And simply slide back and disconnect and that's how we can take power. -- in hydraulics separate from the cab in the trailer. Another unique feature about the detachable low boy trailer is it as a secondary set of air power connections. Have to be disconnected. -- removes power. From this section of the trailer to the back into the trailer. And again insurers that we've locked the -- -- On this -- this -- in -- little boy in taxable trailer you can see on the size of the larger tank is for diesel. The smaller tank. This four hydraulic oil and you can tell because it's got pressure relieved. In you can actually track the lines that go to power -- hydraulics. -- -- -- and take a look at is the dump trailer. There's two types of dump trailers there's a frame and -- -- this is a frame dump trailer. You'll notice that it's got hydraulic lines that attaches to the -- the toes and so look at operate hydraulic pistons that'll lift the trailer causing it to dump. Typically we have stone. Gravel saying sludge and various types of material that will have to be dumped and its location. But the back of the -- bad we have the gate. The -- can either swing to the side or swing up. It's important for us and size of that if we have -- vehicle it's come in contact with the back we want to evaluate the stability gate to ensure that during rescue operations. The gate doesn't open spilling its contents on -- the -- area. Simply using gene or combination of come along as we can secure the gate in the closed position -- there's not gonna open and control. Keep in mind there are many different types of trailers that run up and down our roads every day. In this segment where it -- show just a few basic common types that we see. And our jurisdictions. Thank you for watching this segment -- training minutes and thank you don't watch for for sponsoring it.

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