Industrial truck

Patent metadata

Field	Value
Publication number	US-9533863-B2
Application number	US-201414522147-A
Country	US
Kind code	B2
Filing date	Oct 23, 2014
Priority date	Oct 23, 2014
Publication date	Jan 3, 2017
Grant date	Jan 3, 2017

Abstract

An industrial truck has a drive part and a load part. The drive part has at least one steerable drive wheel and at least one supporting wheel. The drive part has a full-floating axle which has two arms which are in each case mounted in a rotational joint and of which one bears the supporting wheel and one bears the drive wheel. Each arm is coupled to the drive part via a spring damping element.

First claim

What is claimed is:

1. An industrial truck defining a longitudinal center axis, said industrial truck comprising:
a drive part having a frame and at least one steerable drive wheel and at least one support wheel;
said drive part including a full-floating axle;
said full-floating axle having a first arm and a second arm and having a rotational joint interconnecting and supporting said first and second arms with said first arm being shorter than said second arm;
said first arm carrying said steerable drive wheel and said second arm carrying said support wheel;
a first resilient damping element coupling said first arm to said frame of said drive part;
a second resilient damping element coupling said second arm to said frame of said drive part;
said single rotational joint being arranged off-center in said full-floating axle with respect to said drive wheel and said support wheel as well as with respect to said longitudinal center axis of said industrial truck; and, each of said first and second resilient damping elements having a hard stop for limiting a movement of the arm corresponding thereto toward said frame.

2. The industrial truck of claim 1 , wherein said rotational joint is a single rotational joint of said full-floating axle and said first and second arms are supported in said single rotational joint.

3. The industrial truck of claim 1 , wherein said industrial truck is a reach truck or a high rack stacker.

4. The industrial truck of claim 1 , wherein at least one of said first and second resilient damping elements is configured for an intrinsic frequency.

5. The industrial truck of claim 1 , wherein at least one of said first and second resilient damping elements is resiliently prestressed.

6. The industrial truck of claim 1 , wherein at least one of said first and second resilient damping elements has one or more elastic plastic spring elements.

7. The industrial truck of claim 6 , wherein said one or more of said elastic plastic spring elements is secured with adhesives.

8. The industrial truck of claim 6 , wherein said one or more of said elastic plastic spring elements is secured with a corresponding one or ones of said resilient damping elements by one or more threaded fasteners.

Assignees

• Jungheinrich Ag

Inventors

• Plachta Dominik
• Albrecht Clemens

Classifications

• B60G13/005

  characterised by the mounting on the axle or suspension arm of the damper unit · CPC title

• B60G3/04

  the arm being essentially transverse to the longitudinal axis of the vehicle · CPC title

• B66F9/07572

  Propulsion arrangements · CPC title

• B66F9/07586 Primary

  Suspension or mounting of wheels on chassis · CPC title