Autonomous transport vehicle
First Claim
1. A method comprising:
- providing an autonomous transport vehicle, the autonomous transport vehicle including a frame having a longitudinal axis extending from a front of the frame to a back of the frame;
mounting at least one first guide member on one side of the frame, the at least one first guide member having a first guide member frame of reference; and
mounting at least one second guide member to an opposite side of the frame than the at least one first guide member, the at least one second guide member having a second guide member frame of reference;
wherein the at least one first guide member and the at least one second guide member are asymmetrically compliant guide members so that a stiffness of the at least one first guide member in response to a force in a predetermined direction relative to the first guide member frame of reference is different than a stiffness of the at least one second guide member in response to the force in the predetermined direction relative to the second guide member frame of reference and a stiffness of the at least one first guide member at a respective guide surface in response to a force in a different predetermined direction relative to the first guide member frame of reference is the same as a stiffness of the at least one second guide member at a respective guide surface in response to the force in the different predetermined direction relative to the second guide member frame of reference.
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Accused Products
Abstract
An autonomous transport vehicle including a frame having a longitudinal axis extending from a front of the frame to a back of the frame, at least one first guide member mounted on one side of the frame and having a first guide member frame of reference, and at least one second guide member mounted to an opposite side of the frame than the at least one first guide member and having a second guide member frame of reference, wherein the first and second guide members are asymmetrically compliant guide members so that a stiffness of the at least one first guide member in response to a force in a predetermined direction relative to the first guide member frame of reference is different than a stiffness of the at least second guide member in response to the force in the predetermined direction relative to the second guide member frame of reference.
330 Citations
20 Claims
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1. A method comprising:
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providing an autonomous transport vehicle, the autonomous transport vehicle including a frame having a longitudinal axis extending from a front of the frame to a back of the frame; mounting at least one first guide member on one side of the frame, the at least one first guide member having a first guide member frame of reference; and mounting at least one second guide member to an opposite side of the frame than the at least one first guide member, the at least one second guide member having a second guide member frame of reference; wherein the at least one first guide member and the at least one second guide member are asymmetrically compliant guide members so that a stiffness of the at least one first guide member in response to a force in a predetermined direction relative to the first guide member frame of reference is different than a stiffness of the at least one second guide member in response to the force in the predetermined direction relative to the second guide member frame of reference and a stiffness of the at least one first guide member at a respective guide surface in response to a force in a different predetermined direction relative to the first guide member frame of reference is the same as a stiffness of the at least one second guide member at a respective guide surface in response to the force in the different predetermined direction relative to the second guide member frame of reference. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for transporting items in a storage and retrieval system where the storage and retrieval system includes picking aisles adjacent item storage locations, the method comprising:
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providing an automated transport vehicle including a frame having a front end, a back end and a longitudinal axis extending between the front and back ends; disposing a pair of first guide members on a first side of the frame where one of the pair of first guide members is disposed adjacent the front end and the other of the pair of first guide members is disposed adjacent the back end, each guide member of the pair of first guide members having a first guide member frame of reference; disposing a pair of second guide members on a second side of the frame, opposite the first side, where one of the pair of second guide members is disposed adjacent the front end and the other of the pair of second guide members is disposed adjacent the back end, each guide member of the pair of second guide members having a second guide member frame of reference; and controlling the automated transport vehicle to one or more of enter a picking aisle with the front end leading a direction of travel of the automated transport vehicle to pick or place the items in the storage locations, the automated transport vehicle being guided by one of the pair of first guide members or pair of second guide members, or enter the picking aisle with the back end leading a direction of travel of the automated transport vehicle to pick or place the items in the storage locations, the automated transport vehicle being guided by the other of the pair of first guide members or pair of second guide members; wherein the pair of first guide members and the pair of second guide members are asymmetrically compliant so that a stiffness of each one of the pair of first guide members in response to a force in a predetermined direction relative to a respective first guide member frame of reference is different than a stiffness of each one of the pair of second guide members in response to the force in the predetermined direction relative to a respective second guide member frame of reference. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification