Quint configuration fire apparatus

Patent metadata

Field	Value
Publication number	US-11813488-B2
Application number	US-202017029706-A
Country	US
Kind code	B2
Filing date	Sep 23, 2020
Priority date	Nov 24, 2014
Publication date	Nov 14, 2023
Grant date	Nov 14, 2023

Abstract

A quint configuration fire apparatus includes a chassis, a body assembly coupled to the chassis and having a storage area configured to receive a ground ladder and a fire hose, a pump coupled to the chassis, a water tank coupled to the chassis, a ladder assembly having a proximal end that is coupled to the chassis, a single front axle coupled to a front end of the chassis, and a single rear axle coupled to a rear end of the chassis. The center of gravity of at least one of the chassis, the body assembly, the pump, and the water tank are positioned to counterbalance a moment generated by a tip load with the ladder assembly extended to the horizontal reach of at least 90 feet.

First claim

The invention claimed is:

1. A quint configuration fire apparatus comprising:
a chassis defining a longitudinal axis;
a cab coupled to the chassis;
a body assembly coupled to the chassis and positioned rearward of the cab, the body having a storage area configured to receive a ground ladder and a fire hose;
a pump coupled to the chassis;
a water tank coupled to the chassis;
a pedestal coupled to the chassis;
a ladder assembly having a proximal end supported by the pedestal;
a single front axle coupled to a front end of the chassis;
a single rear axle coupled to a rear end of the chassis; and
a plurality of stabilizers;
wherein the plurality of stabilizers include exactly two outriggers positioned between the single front axle and the single rear axle that engage a ground surface at a total of two contact points between the single front axle and the single rear axle;
wherein each of the two outriggers includes a single extending member;
wherein the two outriggers are offset relative to one another along the longitudinal axis;
wherein the two outriggers are configured to protrude from opposing lateral sides of the body assembly in a direction perpendicular to the longitudinal axis;
wherein the ladder assembly is rotatable about the pedestal into a plurality of operating orientations including at least (a) a forward orientation where a distal end of the ladder assembly extends forward of the cab, (b) a rearward orientation where the distal end of the ladder assembly extends rearward of the body assembly, and (c) a side orientation where the distal end of the ladder assembly extends to a side of the body assembly;
wherein the ladder assembly includes a plurality of ladder sections that are extendable to a horizontal reach of at least 90 feet; and
wherein the combination of (a) a center of gravity of the chassis, the body assembly, the pump, and the water tank with (b) the plurality of stabilizers including the exactly two outriggers positioned between the single front axle and the single rear axle are configured to counterbalance and support a tip load of at least 750 pounds applied to the distal end of the ladder assembly while the plurality of ladder sections are extended to the horizontal reach of at least 90 feet in each of the plurality of operating orientations.

2. The quint configuration fire apparatus of claim 1 , wherein the water tank has a capacity of at least 500 gallons.

3. The quint configuration fire apparatus of claim 1 , wherein the plurality of ladder sections are extendable to a vertical height of at least 95 feet.

4. The quint configuration fire apparatus of claim 1 , wherein the plurality of ladder sections are extendable to a vertical height of at least 105 feet.

5. The quint configuration fire apparatus of claim 1 , wherein the plurality of ladder sections are extendable to the horizontal reach of at least 100 feet.

6. The quint configuration fire apparatus of claim 1 , wherein the two outriggers are coupled to the chassis and moveable between a fully extended position and a retracted position.

7. The quint configuration fire apparatus of claim 6 , wherein a pair of contact pads associated with the two outriggers are spaced a distance of no more than 18 feet when the two outriggers are in the fully extended position.

8. The quint configuration fire apparatus of claim 1 , wherein the single rear axle has a gross axle weight rating of no more than 33,500 pounds.

9. The quint configuration fire apparatus of claim 6 , wherein the plurality of stabilizers includes a stability foot positioned rearward of the single rear axle.

10. The quint configuration fire apparatus of claim 1 , wherein the side orientation includes a lateral orientation where the ladder assembly is oriented perpendicular to the longitudinal axis of the chassis.

11. A fire apparatus comprising:
a chassis defining a longitudinal axis;
a ladder assembly having a proximal end that is coupled to the chassis;
a single front axle coupled to a front end of the chassis;
a single rear axle coupled to a rear end of the chassis; and
a plurality of stabilizers including (i) exactly two stabilizers positioned between the single front axle and the single rear axle and (ii) at least a third stabilizer positioned rearward of the single rear axle;
wherein the two stabilizers are offset relative to one another along the longitudinal axis;
wherein the two stabilizers are configured to extend from opposing sides of the chassis in a direction perpendicular to the longitudinal axis;
wherein the ladder assembly includes a plurality of ladder sections that are extensible to provide a horizontal reach of at least 90 feet;
wherein the ladder assembly is rotatable into a plurality of operating orientations including a lateral orientation where the ladder assembly is oriented perpendicular to the longitudinal axis of the chassis; and
wherein the combination of (a) a center of gravity of the chassis with (b) the plurality of stabilizers including the exactly two stabilizers positioned between the single front axle and the single rear axle are configured to counterbalance and support a tip load of at least 750 pounds applied to a horizontal distal end of the ladder assembly while the plurality of ladder sections are extended to the reach of at least 90 feet and while in each of the plurality of operating orientations.

12. The fire apparatus of claim 11 , further comprising a pedestal coupling the ladder assembly to the chassis and defining an axis about which the ladder assembly is configured to rotate.

13. The fire apparatus of claim 12 , further comprising a turntable rotatably coupling the proximal end of the ladder assembly to the pedestal such that the ladder assembly is selectively repositionable into the plurality of operating orientations, wherein the horizontal reach is defined between the axis about which the ladder assembly is configured to rotate and the distal end of the ladder assembly.

14. The fire apparatus of claim 13 , further comprising a cab assembly coupled to the front end of the chassis, wherein the plurality of operating orientations includes a forward orientation in which the ladder assembly extends over the cab assembly, a rearward orientation in which the ladder assembly extends away from the cab assembly, and the lateral orientation.

15. The fire apparatus of claim 11 , wherein the single rear axle has a gross axle weight rating of no more than 33,500 pounds.

16. A quint configuration fire apparatus comprising:
a chassis defining a longitudinal axis;
a single front axle coupled to the chassis;
a single rear axle coupled to the chassis, wherein the single rear axle has a gross axle weight rating of no more than 33,500 pounds;
a body coupled to the chassis, the body having storage configured to receive a ground ladder and a fire hose;
a pump coupled to the chassis;
a water tank coupled to the chassis, the water tank having a capacity of at least 500 gallons;
a ladder assembly having a proximal end supported by the chassis; and
two outriggers positioned between the single front axle and the single rear axle;
wherein the two outriggers are offset relative to one another along the longitudinal axis;
wherein the two outriggers are configured to protrude from opposing lateral sides of the body assembly in a direction perpendicular to the longitudinal axis;
wherein the ladder assembly includes a plurality of ladder sections that are extendable to a vertical height of at least 95 feet; and
wherein the combination of (a) a center of gravity of at least one of the chassis, the body

Assignees

• Oshkosh Corp

Inventors

• Moore Michael R

Classifications

• A62C27/00 Primary

  Fire-fighting land vehicles · CPC title

• B60B35/00

  Axle units; Parts thereof (steerable vehicle stub axles B62D ){; Arrangements for lubrication of axles} · CPC title

• B60B35/004

  Mounting arrangements for axles · CPC title

• B60G11/02

  having leaf springs only {(B60G11/006 takes precedence)} · CPC title

• B60G11/10

  characterised by means specially adapted for attaching the spring to axle or sprung part of the vehicle · CPC title