Ladder and turntable assembly for a fire apparatus

Patent metadata

Field	Value
Publication number	US-12365571-B2
Application number	US-202117555720-A
Country	US
Kind code	B2
Filing date	Dec 20, 2021
Priority date	Nov 24, 2014
Publication date	Jul 22, 2025
Grant date	Jul 22, 2025

Abstract

A turntable for a ladder assembly of a fire apparatus includes a base plate, a first set of side plates coupled to the base plate, a second set of side plates coupled to the base plate, a first bracket coupled to the base plate, a second bracket coupled to the base plate, a subfloor assembly releasably coupled to the first bracket and the second bracket with a plurality of fasteners, and a work platform coupled to the subfloor assembly. The first set of side plates extend vertically upward from a first side of the base plate. The second set of side plates extend vertically upward from an opposing second side of the base plate. The first bracket extends rearward from the base plate proximate the first side thereof. The second bracket extends rearward from the base plate proximate the opposing second side thereof.

First claim

The invention claimed is:

1. A ladder assembly for a fire apparatus, the ladder assembly comprising:
a turntable including:
a base plate;
a first set of side plates coupled to the base plate, the first set of side plates extending vertically upward from a first side of the base plate, the first set of side plates defining a first connection point;
a second set of side plates coupled to the base plate, the second set of side plates extending vertically upward from an opposing second side of the base plate, the second set of side plates defining a second connection point;
a first bracket coupled to the base plate, the first bracket extending rearward from the base plate proximate the first side thereof;
a second bracket coupled to the base plate, the second bracket extending rearward from the base plate proximate the opposing second side thereof;
a subfloor assembly releasably coupled to the first bracket and the second bracket with a plurality of fasteners; and
a work platform coupled to the subfloor assembly; and

a ladder coupled to the first set of side plates at the first connection point and the second set of side plates at the second connection point.

2. The ladder assembly of claim 1 , wherein the work platform is manufactured from a first material, and wherein the first bracket and the second bracket are manufactured from a second material different than the first material.

3. The ladder assembly of claim 2 , wherein the first material is lighter than the second material.

4. The ladder assembly of claim 2 , wherein the first material is aluminum.

5. The ladder assembly of claim 2 , wherein the work platform is a plate having a thickness of no more than 0.5 inches.

6. The ladder assembly of claim 1 , wherein the turntable includes (i) a first arm extending forward from the base plate proximate the first side thereof and (ii) a second arm extending forward from the base plate proximate the opposing second side thereof, further comprising (i) a first actuator extending between the first arm and the ladder and (ii) a second actuator extending between the second arm and the ladder.

7. The ladder assembly of claim 1 , wherein the turntable includes:
a third bracket extending laterally outward from the first side of the base plate; and
a control console supported by the third bracket.

8. The ladder assembly of claim 1 , wherein the ladder includes:
a first ladder section;
a second ladder section extendible relative to the first ladder section; and
a slide pad positioned to between the first ladder section and the second ladder section, the slide pad having a double-hump cross-sectional shaped profile.

9. The ladder assembly of claim 1 , wherein the ladder includes:
a first truss assembly including a first base rail, a first hand rail, and a first plurality of lacing members extending between the first base rail and the first hand rail;
a second truss assembly including a second base rail, a second hand rail, and a second plurality of lacing members extending between the second base rail and the second hand rail; and
a plurality of rungs extending between the first truss assembly and the second truss assembly.

10. The ladder assembly of claim 9 , wherein each of the first base rail and the second base rail includes:
a first tubular member having a first length; and
a second tubular member fixed to the first tubular member and having a second length less than the first length.

11. The ladder assembly of claim 9 , wherein each of the first base rail and the second base rail has a variable width along a length thereof.

12. The ladder assembly of claim 1 , wherein the ladder includes:
a base rail;
a hand rail;
a first lacing member and a second lacing member extending between the base rail and the hand rail, both the first lacing member and the second lacing member engaging the base rail at an interface, each of the first lacing member and the second lacing member defining a slot; and
a gusset received by the slot of the first lacing member and the second lacing member and engaging the base rail to reinforce the interface.

13. A turntable for a ladder assembly of a fire apparatus, the turntable comprising:
a base plate;
a first set of side plates coupled to the base plate, the first set of side plates extending vertically upward from a first side of the base plate, the first set of side plates defining a first ladder connection point configured to couple to a ladder of the ladder assembly;
a second set of side plates coupled to the base plate, the second set of side plates extending vertically upward from an opposing second side of the base plate, the second set of side plates defining a second ladder connection point configured to couple to the ladder;
a first bracket coupled to the base plate, the first bracket extending rearward from the base plate proximate the first side thereof;
a second bracket coupled to the base plate, the second bracket extending rearward from the base plate proximate the opposing second side thereof,
a subfloor assembly releasably coupled to the first bracket and the second bracket with a plurality of fasteners; and
a work platform coupled to the subfloor assembly.

14. The turntable of claim 13 , wherein the work platform is manufactured from a first material, and wherein the first bracket and the second bracket are manufactured from a second material different than the first material.

15. The turntable of claim 14 , wherein the first material is lighter than the second material.

16. The turntable of claim 14 , wherein the first material is aluminum.

17. The turntable of claim 14 , wherein the work platform is a plate having a thickness of no more than 0.5 inches.

18. The turntable of claim 13 , further comprising:
a first arm extending forward from the base plate proximate the first side thereof, the first arm configured to couple to a first actuator extending between the first arm and the ladder of the ladder assembly; and
a second arm extending forward from the base plate proximate the opposing second side thereof, the second arm configured to couple to a second actuator extending between the second arm and the ladder.

19. The turntable of claim 13 , further comprising:
a third bracket extending laterally outward from the first side of the base plate; and
a control console supported by the third bracket.

20. A turntable for ladder assembly of a fire apparatus, the turntable comprising:
a base plate;
a first set of side plates coupled to the base plate, the first set of side plates extending vertically upward from a first side of the base plate, the first set of side plates defining a first ladder connection point configured to couple to a ladder of the ladder assembly;
a second set of side plates coupled to the base plate, the second set of side plates extending vertically upward from an opposing second side of the base plate, the second set of side plates defining a second ladder connection point configured to couple to the ladder;
a first bracket coupled to the base plate, the first bracket extending rearward from the base plate proximate the first side thereof;
a second bracket coupled to the base plate, the second bracket extending rearward from the base plate proximate the opposing second side thereof,
a subfloor assembly coupled to the first bracket and the second bracket;
a work platform coupled to the subfloor assembly;
a third bracket extending laterally outward from the first side of the base plate; and
a control cons

Assignees

• Oshkosh Corp

Inventors

• Betz Eric D
• Bloemer Jennifer L
• Aiken Jeffrey D

Classifications

• B66F11/044

  Working platforms suspended from booms · CPC title

• E06C7/16

  Platforms on, or for use on, ladders, e.g. liftable or lowerable platforms (aspects relating to the lifting B66F) · CPC title

• E06C5/04 Primary

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

• A62C27/00

  Fire-fighting land vehicles · CPC title

• B60Y2200/49

  Movable platforms, Load ramps, e.g. working platforms · CPC title