Robot which is capable of receiving impact load

Details Robot which is capable of receiving impact load Robot which is capable of receiving impact load

1994-05-16

1996-03-12

Underwood, Donald W.

Material or article handling

Vertically swinging load support

Shovel or fork type

414917, 901 48, 7449006, B66C 2372

Patent

active

054981212

ABSTRACT:
When an impact load is applied to a workpiece which is held by the robot, the impact force can be absorbed. The robot includes a grip 3 for holding a workpiece to which an impact load is applied and a buffer mechanism disposed between the grip 3 and a robot arm 2. The buffer mechanism 4 includes two parallel link mechanisms 5, 6 for enabling the grip 3 to be moved in various directions and hydraulic actuator mechanisms 7, 8 for relaxing the actuation of the parallel link mechanisms 5, 6. When an impact force is applied to the grip 3, two parallel link mechanisms 5, 6 are actuated so that the grip 3 is slightly displaced while the hydraulic actuator mechanisms 5, 6 relax the actuation of the parallel link mechanisms 7, 8. Therefore, the impact force which is applied to the grip 3 can be absorbed. Additionally, after the impact force is applied to the grip 3, the buffer mechanism 4 can immediately be returned automatically to the initial position.

REFERENCES:
patent: 3703968 (1972-11-01), Uhrich et al.
patent: 4592697 (1986-06-01), Tuda et al.
patent: 4904150 (1990-02-01), Svensson et al.
patent: 4975016 (1990-12-01), Pellenc et al.

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