Rotary step board for passenger compartment of fire engine

Abstract

The invention relates to the technical field of fire engines, in particular to a rotary step board for a passenger compartment of a fire engine. The rotary step board structurally comprises a step board body which is normally hidden inside, and when a door of the passenger compartment is opened, the step board body rotates to be exposed for stepping. A friction plate fixed in position relative tothe passenger compartment is arranged below a moving trail of the step board body, the step board body under a downward stepping force contacts with the friction plate, and the step board body and thefriction plate are in friction along an exposure moving direction until the step board body is stopped. Compared with the prior art, the rotary step board has advantages that by control of separationand combination of the friction plate and the step board body, quick switching between a braked state and a brake relief state of the step board body is realized, and accordingly firefighters can quickly and safely get into and out of the passenger compartment, especially under conditions of nighttime rescue and rescue in narrow spaces not allowing complete opening of the door of the passenger compartment, the potential risk that the firefighters quickly stepping up and down the step board body fall over is effectively avoided, and precious rescue time is saved.

Description

technical field [0001] The invention relates to the technical field of fire trucks, in particular to a rotary pedal for the passenger compartment of a fire truck. Background technique [0002] With the development of science and technology, fire trucks include air compressed foam fire trucks, water tank foam fire trucks, emergency rescue fire trucks, etc. At present, most fire trucks have an independent crew compartment, which is usually located between the cab and the body used to carry the liquid storage tank (with water or fire-fighting foam inside), and the crew compartment is equipped with a crew compartment door for firefighters to enter and exit . Because the vehicle chassis of the fire truck is relatively high, a stepped pedal (that is, a pedal with more than one step) is installed at the position corresponding to the lower part of the passenger compartment door. [0003] Most of the existing pedals are welded or fixed on the vehicle frame below the passenger compa...

AI Technical Summary

Problems solved by technology

[0003] Most of the existing pedals are welded or fixed on the vehicle frame below the passenger compartment door by means of fasteners. Although this fixed pedal structure can meet the requirements of firefighters getting on and off the car, its defects are: 1) The pedal is installed under the door of the passenger compartment and is exposed on the side of the vehicle body, so it takes up a lot of rescue space and is easily damaged; 2) During rescue, it is necessary to park the fire truck at a spacious position on both sides, and put the passenger Only when the door is fully opened can firefighters enter and exit through the pedals, which makes it inconvenient for firefighters to enter and exit, and affects the speed of rescue; Personnel cannot get on and off the vehicle through fixed pedals, which seriously delays precious rescue time

But, the problem that this tread plate structure exists is, when the firefighter needs emergency access and opens the passenger compartment door quickly, the tread plate body also exhibits the bottom of the passenger compartment rapidly along with the passenger compartment door, when the firefighter walks out of the passenger compartment and steps on When stepping on the footboard body, due to inertia, the footboard body is still rotating, which cannot guarantee the safety of firefighters when they enter and exit quickly, especially in narrow rescue and night rescue environments where the passenger compartment door cannot be fully opened, firefighters are more likely to appear There is a safety hazard of falling when quickly going up and down the stepped steps, thus delaying precious rescue time

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