EOT crane with twin hoist operation with semi-automation to lift container using a remote joystick controller.
Below operation description and operation sequence flow:-
1) Under normal operation mode -- manual operation for all movement i.e. up down and Left Right, Forward & Reverse by joystick controller. The crane is moving along the runway in a bay approx. 50 meter length across crane span 14meter divide into two parts area approx.300sq-meter each for storage area on container parking and other for service area.
2) Semi automation operation only applies when a crane required to pick up a container from storage area by mean of a spreader beam attached to the hoist hook. Container all placed & parked as per enactment certified location in ‘X’ “Y” layout, separate into two-row(line) parallel along the runway ( Call Line -1 & line-2) and each row (line) allow plan into 4 four-compartment to park each container call station (S) 1-4 on each line , each compartment allow to stack max four (4) container---symbol i.e. L1X S1,L1XS2,L1XS3 & L1XS4 same as L2XS1,L2XS2,L2XS3 & L2XS4. Storage area one layer allows for 4 containers on each line X 2lines = to 8 containers one layer.
3) Next is joystick controller beside standard “ON & “OFF” up-down, Left- Right, Forward-Reverse, must provision two selector switch one for LINE 1& 2 so call L1 & L2, and one for S1, S2, S3 & S4. with one additional switch for auto & manual mode, To cater for this operation mode.
4) Sequence - The process to pick up the container, the operator must hoist up hook with a spreader beam to the max. hook path height then able to switch to the Auto mode by interlocking control, ( control circuit on auto mode only apply on travelling and trolley movement) after selector Line switch turn to LI or L2 & station(S) switch to S1 or S2 S3 to S4, mean if operator required to pick up location L1 & S4 compartment container, i.e. switch to L1/S4, then the crane will start auto moving at slow speed on a long travel to reach the destination” L1” and hoist trolley will move to destination point “ S4” and stop stationary at the destination point.
Next, the operator needs to manually lowering down the spreader beam to reach on top of the container, spreader beam clamping device will activate. Interlock and hook on the container follow by operator lifting up till clear height and move out away from storage area to the service area and lowering down the container to park at the floor level while also release the clamp of spreader Beam complete.
The same way apply on the reverse circle to bring a container to storage after servicing, lifting up to clear height by manual and then follow by auto mode (same as an above select destination point for unloading.
Control components proposal Line & station limit switch or sensor and PLC for all interlocking device to fulfil such operation mode requirement.
In line to the above operation description manual and semi-auto mode of operation, Provide a solution with the design of an electrical Control circuit with all the required components and parts recommendation.
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22 freelancers estão ofertando em média $1232 nesse trabalho
I am doing projects as freelance last 6 years & total working experience is 15 years in automation & 5 years in servicing , so i can do this project with confidence.