Quint configuration fire apparatus

Patent metadata

Field	Value
Publication number	US-9814915-B2
Application number	US-201715460901-A
Country	US
Kind code	B2
Filing date	Mar 16, 2017
Priority date	Nov 24, 2014
Publication date	Nov 14, 2017
Grant date	Nov 14, 2017

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 including a plurality of extensible ladder sections, the 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 the tip load with the ladder assembly extended to the horizontal reach of at least 90 feet.

First claim

What is claimed is:

1. A quint configuration fire apparatus, comprising:
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 including a plurality of extensible ladder sections, the 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,
wherein the ladder assembly is extensible to provide a horizontal reach of at least 90 feet and a vertical height of at least 95 feet, wherein the ladder assembly is configured to support a tip load of at least 750 pounds, and wherein 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 the tip load with the ladder assembly extended to the horizontal reach of at least 90 feet.

2. The fire apparatus of claim 1 , further comprising a pedestal coupling the ladder assembly to the chassis and defining an axis about which the ladder assembly is configured to rotate.

3. The fire apparatus of claim 2 , 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 a plurality of operating orientations, wherein the horizontal reach is defined between the axis about which the ladder assembly is configured to rotate and a distal end of the ladder assembly, and wherein the vertical height is defined between a distal rung of the ladder assembly and a ground surface.

4. The fire apparatus of claim 3 , further comprising a cab assembly coupled to the front end of the chassis, wherein the plurality of operating orientations includes a forward position in which the ladder assembly extends over the cab assembly, a rearward position in which the ladder assembly extends away from the cab assembly, and a sideward position in which the ladder assembly extends from a lateral side of the chassis.

5. The fire apparatus of claim 4 , wherein the plurality of extensible ladder sections includes a first ladder section, a second ladder section, a third ladder section, and a fourth ladder section, wherein the distal end of the ladder assembly is extensible to the horizontal reach of at least 90 feet when the ladder assembly is oriented in the sideward position.

6. The fire apparatus of claim 1 , further comprising a pair of outriggers coupled to the chassis and moveable between a fully extended position and a retracted position, wherein the pair of outriggers protrude from opposing lateral sides of the chassis when in the fully extended position.

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

8. The fire apparatus of claim 7 , wherein the single rear axle has a gross axle weight rating of no more than 33,500 pounds.

9. The fire apparatus of claim 8 , further comprising at least one of a leaf spring suspension system and an air suspension system coupling the single solid axle configuration to the chassis.

10. The fire apparatus of claim 8 , further comprising a first independent suspension assembly coupled to the first axle and a second independent suspension assembly coupled to the second axle.

11. A fire apparatus, comprising:
a chassis;
a body assembly coupled to the chassis and configured to receive a ground ladder, a fire hose, a pump, and a water tank;
a ladder assembly including a plurality of extensible ladder sections, the 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,
wherein the single rear axle comprises either:
a single solid axle configuration extending laterally across the chassis, or
a first axle having a first constant velocity joint and a second axle having a second constant velocity joint, the first axle and the second axle extending from opposing lateral sides of a differential;

wherein the ladder assembly is extensible to provide a horizontal reach of at least 90 feet, wherein the ladder assembly is configured to support a tip load of at least 750 pounds, and wherein 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 the tip load with the ladder assembly extended to the horizontal reach of at least 90 feet.

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 a plurality of operating orientations, wherein the horizontal reach is defined between the axis about which the ladder assembly is configured to rotate and a 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 position in which the ladder assembly extends over the cab assembly, a rearward position in which the ladder assembly extends away from the cab assembly, and a sideward position in which the ladder assembly extends from a lateral side of the chassis.

15. The fire apparatus of claim 14 , wherein the plurality of extensible ladder sections includes a first ladder section, a second ladder section, a third ladder section, and a fourth ladder section, wherein the distal end of the ladder assembly is extensible to the horizontal reach of at least 90 feet when the ladder assembly is oriented in the sideward position.

16. The fire apparatus of claim 11 , further comprising a pair of outriggers coupled to the chassis and moveable between a fully extended position and a retracted position, wherein the pair of outriggers protrude from opposing lateral sides of the chassis when in the fully extended position.

17. The fire apparatus of claim 16 , wherein a pair of contact pads associated with the pair of outriggers are spaced a distance of no more than 18 feet when the pair of outriggers are in the fully extended position.

18. The fire apparatus of claim 17 , wherein the single rear axle has a gross axle weight rating of no more than 33,500 pounds.

19. The fire apparatus of claim 18 , further comprising either:
at least one of a leaf spring suspension system and an air suspension system coupling the single solid axle configuration to the chassis, or
a first independent suspension assembly coupled to the first axle and a second independent suspension assembly coupled to the second axle.

20. A quint configuration fire apparatus, comprising:
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 including a plurality of extensible ladder sections, the ladder assembly having a proximal end that is coupled to the chassis;
a single front axle coupled to a front e

Assignees

• Oshkosh Corp

Inventors

• Moore Michael R

Classifications

• B60G11/02

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

• B60B35/00

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

• B60G11/10

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

• B60G11/27

  wherein the fluid is a gas · CPC title

• E06C5/04

  capable of being elevated or extended {; Fastening means during transport, e.g. mechanical, hydraulic} · CPC title