Steering drive for industrial trucks

• US 6,991,059 B2
• Filed: 02/10/2004
• Issued: 01/31/2006
• Est. Priority Date: 02/28/2003
• Status: Expired due to Fees

• Current Assignee: Jungheinrich AG
• Original Assignee: Jungheinrich AG
• Inventors: Stubbe, Matthias
• Primary Examiner(s): WINNER, TONY H
• Application Number:
  US10/776,964
• Publication Number:
  US 20040168850A1
• Time in Patent Office: 721 Days
• Field of Search: 180/6.28, 180/234, 180/253, 180/252, 180/444, 744/43.X, 744/45.X
• US Class Current: 180/253
• CPC Class Codes: B62D 5/0418 Electric motor acting on road wheel carriers
• CPC Class Codes: B62D 7/023 Steering turntables
• CPC Class Codes: B66F 9/07572 Propulsion arrangements
• CPC Class Codes: F16H 55/14 Construction providing resilience or vibration-damping F16H55/06 takes precedence
• CPC Class Codes: Y10T 74/19623 Backlash take-up

Abstract

A steering drive for an industrial truck, comprising a steered wheel which is rotatably supported about a horizontal axis in a bearing component wherein the bearing component is pivotally supported about a vertical axis and has a ring gear, and a steering motor which drives a pinion meshing with the ring gear, wherein the ring gear or pinion has a circumferential groove in which a ring-shaped absorbing member of a resilient material is received so that the teeth of the pinion or ring gear get into engagement with the absorbing member.

Claims

1. A steering drive for an industrial truck, comprising a steered wheel which is rotatably supported about a horizontal axis in a bearing component wherein the bearing component is pivotally supported about a vertical axis and has a ring gear, and a steering motor which drives a pinion meshing with the ring gear, the ring gear being composed of two adjacent gear discs which define a circumferential groove in a gear disc contacting area, a ring-shaped noise absorbing member of a resilient material being accommodated by the groove so that the teeth of the pinion engage the noise absorbing member.

2. The steering drive as claimed in claim 1, characterized in that the ring gear is defined by two adjacent tooth lock washers which define a groove in a lock washers contacting area.

3. The steering drive as claimed in claim 1, characterized in that the ring-shaped noise absorbing member is defined by an O-ring.