Title:
CENTERING DEVICE FOR UNMANNED CONVEYING TRUCK DRIVING WHEEL
Document Type and Number:
Japanese Patent JP3508376
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To improve track curvature following property of a driving wheel so as restoring force to make the direction of the driving wheel proceed to the front of a truck may not work by providing a guide member formed with a guiding surface to which a protrusion member provided on a running unit abuts and guides the protrusion member to a specific position when the running unit rises.
SOLUTION: A centering device 51 makes a protrusion member 52, which is provided on the casing 26 of a running unit 21, abut on the guidance surface 53a of a guide member 53 when the running unit rises and guides it to the center position of a driving unit 2. When a truck is to be operated without an attendant, the running unit 21 descends by an elevating mechanism, driving wheels 35, 45 abut on the road, the guide member 53 and the protrusion member 52 mutually separate from each other, and become revolving free. In case the truck is to be operated manually, driving wheels 35, 45 are lifted up from the ground by pushing the running unit 21 up, the driving unit 2 is guided to the central position by making the protrusion member 52 abut on the guidance surface 53a, the directions of the truck and the running unit 21 become the same, and facilitates the work to set the truck on the track.
Inventors:
Mizuhara, Yoshitaka
Sasaki KO.
Sasaki KO.
Application Number:
JP8535596A
Publication Date:
March 22, 2004
Filing Date:
April 08, 1996
Export Citation:
Assignee:
NISSAN MOTOR CO LTD
International Classes:
B62B3/02; G05D1/02; B61B13/00; (IPC1-7): B61B13/00; B62B3/02; G05D1/02
Attorney, Agent or Firm:
八田 幹雄 （外１名）
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