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35 Cards in this Set
- Front
- Back
4 basic types of hydraulic tools
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-spreaders
-shears -combination speader/shears -extension rams |
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spreader tips can extend
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32 inches apart
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shears can extend
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opening spread of 7 inches
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extension rams
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closed length of 3 feet to extended length of around 5 ft
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porta power tools
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labor intensive, operate slowly, limited range of operation
-tranmitts pressure from manual hydraulic pump through a high pressure hose to a tool assembly |
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unibody constrcution
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prone to collapse when roof is removed, need third step block under b post to prevent this
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air chisels
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operate between 90 and 250 psi
-good for cutting medium to heavy gauge sheet metal and for popping rivets and bolts, opening locks |
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high pressure airbags
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high pressure-tough neopren rubber exterior with steel wire or kevlar aramid fiber
-lie completely flat about 1 inch thick -rang from 6x6 to 36x36 -may inflate to a height of 20 inches - |
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low pressure airbags
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-most commonly used to lift or stabilize large vehicles or objects
-much greater lifting distance (up to 6 feet) |
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cribbing with airbags
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when box cribbing is used to support an airbag the top layer should be solid, leaving openings can cause bag to shift or rupture
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block and tackle
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good because of mech advantage gained to pull
-block is wood or metal fram combining one or more pulleys -tackle is assembly of ropes used to multiply pulling force |
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srs
sis |
supplemental restraint systems
side impact protection -either electonically or mechanically driven -dploy at speed of 200 mph -to prevent accidental firing turn switch to off position, disconnect battery cables, wait for reserve power supply to drain down (sufficient voltage can remain for up to 30 minutes) |
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electrical systems and hybrids
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have high voltage cables they represent elctrocution hazard
-ranges from 144 to more than 300 volts dc (can have orange or blue cables) |
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stabilizing for 2 diff movements
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vertical and horizontal
-horizontal=chock vehciles wheels, may be possible to use parking brake, or put manual in gear -vertical=jacks, pnuematic lifting bags, and cribbing |
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ratchet lever jack
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-high lift jack
-least stable of all of various jacks -one ratchet holds carriage in position while second moves with lever to move carriage up or down |
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bar screw jack
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heavy duty devices excellent for supporting collapsed structural members
-not used for lifting |
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trench screw jack
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-ease of application, durability, and relatively low cost, trecnh screw jacks sometimes used to replace wooden cross braces in trench rescue
-swivel footplate on one end of 2 inch steel pipe and a second swivel footplate with with a threaded stem on other, has adjusting nut with handles to vary length of jack |
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common tools used to cut laminated glass
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air chisel
-axe -reciprocating (sawzaw) -handsaw with coars blade -hay hook -windshield saw |
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laminated vs tempered glass
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-laminated safety glass-2 sheets of glass bonded to a sheet of plastic sandwiched between them
-keeps shard of glass from flying about tempered glass-side and rear windows, small lines of fracture are spread throughout entire plate and the glass separates into many small pieces (eliminates hazard of long pointed pieces of glass |
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inverter
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step up transformer that converts 12 or 24 volt dc to 110 or 220 volt ac
-used when small amounts of power are needed or small electrically operated tools are to be operated |
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generator
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-most common power source used for emregency services
-small gasloine, or diesle engines have 110 or 220 volt capacities vehicle mounted can be run off power take off(system driveshaft) |
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portbale v fixed lighting
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portable-carried to and used in areas where vehicle mounted lights are ineefective (range from 300 to 1000 watt)
fixed-mounted to vehic;e provide overall lighting to scened, often on telescoping poles (500 to 1500 watt) |
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junction box
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a box used when multiple connections are needed from power plant
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cribbing
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most commonly used to stabilize objects but has other uses as well.
-solid, straight and free of major knots or splits -most popular are 2x4 4x4 and 6x6 -usually 36 inches in length |
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impact wrench
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pneumatic or electric driven
-tools ideal for disassembling machinery in which victim is tangled |
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airknife
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blast away dirt
-90 too 100 psi -can almost instantly creat a 1 foot deep and wide hole |
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whizzer saw
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electric or air driven
-20000 rpm carborundum blade cuts case hardened lock and steel up to 3/4 inch thickness usefull for delicate cutting suchas rings from swollen fingers |
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winches
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-should be equipped with handheld remote control devices
-positioned as close to object being pulled as possible (so if cable breaks less recoil) -can be electric, hydraulic, or power take off |
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come along
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portable winch operated by manual ratchet lever
-rating of 1 to 10 tons |
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chains
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alloy steel chains highly resistant to abrasion making them ideal for rescue and extrication
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incident size up
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begins with initial dispatch and continues throughout incident
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scene size up
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begins as soon as first emergency vehicle approaches accident scene
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rescuer assesing immediate area around vehicle should assess
rescuer surveying entire area |
number of victims, sverity of injuries, condition of vehicle, extrication tasks required, and any hazardous conditions
-any other vehicles not readily apparent, any victims thrown from vehicle, damage to structure or utilities that present hazard, |
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three methods of gaining access to vehicle
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-through normally operating door
-through a window -by cutting away parts of vehicle body |
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patient removal
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packaging means wounds have been dressed and bandaged, body immobilized and fractures splinted
-openings should be widened and edges padded with blankets, folded salvage covers or duct tape |