Overhead material handling system and track block

• US 20050274276A1
• Filed: 06/09/2004
• Published: 12/15/2005
• Est. Priority Date: 06/09/2004
• Status: Active Grant

• Current Assignee: Texas Instruments, Inc.
• Original Assignee: Texas Instruments, Inc.
• Inventors: Davis, Richard J., Siemantel, Leonard Paul
• Granted Patent: US 7,117,799 B2
• Time in Patent Office: Days
• US Class Current: 104/88.10
• CPC Class Codes: B25J 5/02 travelling along a guideway
• CPC Class Codes: B65G 9/006 Arresting, braking or escapement means
• CPC Class Codes: B65G 9/008 Rails or switches

Abstract

The present invention is directed to a material handling system (100) and method (200) for isolating a carrier mechanism (110) from the system. The system (100) comprises a track (103) having a channel (105), a turntable (115), and a carrier mechanism (110) coupled to the track structure via the channel. The system (100) further comprises a maintenance station (125), comprising a stub track (130), wherein the stub track is operably coupled to the track structure (103) via the turntable (115). The maintenance station (125) further comprises a power supply (135) and one or more connectors (140) operable to electrically couple the carrier (110) to the power supply (135). One or more stop blocks (145) are provided which are removably coupled to the stub track (130), wherein the stop blocks each comprise a body (155) having a rod (160) extending therefrom. The rod (160) is operable to pass through a hole (165) in the stub track channel (132), wherein a pin (180) is removably coupled to the rod, therein selectively fixing the stop block (145) to the track (130).

Claims

1. A material handling system, comprising:

a track structure having a channel generally defined therein, the track structure comprising a turntable rotatably coupled thereto, wherein a rotational position of the turntable generally defines one or more paths along the channel;

a carrier mechanism generally coupled to the track structure via the channel, wherein the carrier mechanism is operable to travel along the one or more paths; and

a maintenance station, comprising;

a stub track having a channel generally defined therein, the stub track being operably coupled to the track structure via the turntable, wherein one of the one or more paths leads to the stub track;

a power supply;

one or more connectors operable to electrically couple the carrier mechanism to the power supply when the carrier mechanism is at a docking position along the stub track; and

one or more stop blocks removably coupled to the stub track, wherein the one or more stop blocks generally prevent a movement of the carrier mechanism beyond one or more respective ends of the stub track.

2. The system of claim 1, wherein the channel of the stub track comprises one or more holes therethrough, and wherein the one or more stop blocks each comprise:

a body having a rod extending therefrom, the rod having a radial thru-hole at an end thereof, wherein the end of the rod is operable to extend through the hole in the channel of the stub track; and

a pin removably coupled to the rod, wherein the pin is operable to extend through the thru-hole in the rod, therein selectively sandwiching the channel of the stub track between the pin and the body of the stop block and selectively generally fixing the stop block with respect to the stub track.

3. The system of claim 2, wherein each stop block further comprises a tether, wherein a first end of the tether is coupled to the pin and a second end of the tether is coupled to the body.

4. The system of claim 2, wherein the body is comprised of aluminum.

5. The system of claim 2, wherein the body comprises a hole therethrough, and wherein a portion of the rod generally resides within the hole in the body.

6. The system of claim 5, wherein the rod comprises a threaded bolt, the system further comprising a nut in threaded engagement to the bolt, wherein the nut generally sandwiches the body between a head of the bolt and the nut, therein generally fixing the bolt to the body.

7. The system of claim 2, wherein the pin comprises a cotter pin.

8. The system of claim 2, further comprising one or more generally resilient bumpers coupled to the body at one or more ends thereof.

9. The system of claim 8, wherein the one or more bumpers are comprised of rubber.

10. The system of claim 8, wherein the one or more bumpers comprise one or more mechanical shock absorbers.

11. The system of claim 1, wherein the carrier mechanism comprises a wireless communication transponder, and wherein the stub track comprises a wireless communication base station, wherein the transponder is operable to communicate data associated with the carrier with the base station when the carrier is at the docking position.

12. The system of claim 1, wherein the power supply is operable to provide a low voltages and a high voltage to the carrier via the one or more connectors.

13. A method for isolating a carrier mechanism coupled to material handling system, the method comprising:

providing a turntable and a stub track, wherein the turntable and stub track each comprise a channel;

rotating the turntable to a transfer position, wherein the turntable channel aligns with the stub track channel;

translating the carrier mechanism from the turntable channel to the stub track channel;

inserting one or more stop blocks into the stub track channel, wherein a rod associated with each stop block extends through a respective hole in the stub track channel; and

inserting a pin through a hole in an end of each of the rods, therein sandwiching the stub track channel between the respective stop block and pin, therein generally fixing each stop block with respect to the stub track and generally limiting a movement of the carrier mechanism along the stub track channel.

14. The method of claim 13, further comprising:

providing a power source; and

electrically connecting the power source to the carrier mechanism while the carrier mechanism is at a docking position along the stub track channel.

15. The method of claim 14, wherein providing the power source comprises providing two or more amounts of power to the carrier mechanism.

16. The method of claim 13, wherein translating the carrier mechanism from the turntable channel to the stub track channel comprises a manual translation of the carrier mechanism.

17. The method of claim 13, further comprising:

providing a wireless communication base station associated with the stub track and a wireless communication transponder associated with the carrier mechanism; and

wirelessly communicating carrier mechanism activity data between the transponder and the base station.

18. A stop block for a material handling system, comprising:

a generally L-shaped body;

one or more rods extending from the body, wherein the one or more rods each comprise a thru-hole near and end thereof; and

one or more pins, wherein the one or more pins are operable to selectively reside within the one or more respective thru-holes.

19. The stop block of claim 18, further comprising one or more tethers, wherein each tether is coupled to a respective pin at a first end, and to the body at a second end.

20. The stop block of claim 18, further comprising one or more generally resilient bumpers coupled to at least one end of the body.