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Patent Searching and Data


Title:
DEVICE FOR DETECTING OVERLOAD OF GATE LIFTER
Document Type and Number:
Japanese Patent JP11059254
Kind Code:
A
Abstract:

To prevent a malfunction or a breakage of a gate lifter and to ensure a safe loading work by detecting an overload or an uneven load on the loading gate lifter of a freight truck.

The lifting mechanism of a lift plate 1 is composed of a parallelogram comprising link arms of a lift arm 4 provided on a shaft support 3 and a tilting cylinder 5. A load W from a lift plate is transmitted through the tilting cylinder to a pivoting point B on a vector dissolving link. The vector dissolving link is pivotally fixed to a pin A above the pivoting point B and the horizontal vector of an axial force transmitted to the pivoting point B is detected as a component force with a load sensor 50 provided between the vector dissolving link and a bracket. A horizontal vector is constant irrespective of the lifting position of the lift plate by means of the parallelogram and an overload or an uneven load is detected on the basis of a nominal capacity of the lift plate.


Inventors:
Daidoji, Shinya
Ochi, Iwao
Application Number:
JP1997000227462
Publication Date:
March 02, 1999
Filing Date:
August 08, 1997
Export Citation:
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Assignee:
NIPPON FRUEHAUF CO LTD
International Classes:
B60P1/44; B60P5/00; B60P1/44; B60P5/00; (IPC1-7): B60P1/44; B60P5/00