3CTRR, by Amedeo Valoroso, relay board, electronic control system for tunnelling lifting equipment

3CTR control system for tunnel lifters

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3CTR è un sistema di controllo completo per sollevatori per gallerie. E' installato su attrezzature a tre bracci: i posacentine per gallerie. I posacentine sono, in sostanza, composti da due cestelli per il sollevamento delle persone e da un braccio centrale per sollevare e montare le centine, che servono per armare la volta della galleria.

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3CTR, complete control system for tunnel lifts, cention holders, ITALMEC

Su ogni cestello sono presenti dei comandi che consentono agli operatori di controllare il braccio centrale del posacentine. I manipolatori proporzionali comandano elettrovalvole proporzionali, che rendono i movimenti dell'attrezzatura di sollevamento molto fluidi ed anche accurati. Per azionare un movimento, è necessario prima di tutto premere il pulsante di consenso. Questo dispositivo serve, infatti, per evitare movimenti non voluti dagli operatori, che potrebbero compromettere la loro sicurezza.

3CTR proportional commands, by Amedeo Valoroso, electronic control system for tunnelling lifting equipment

I comandi del braccio posacentine sono riuniti in due soli manipolatori. Sono presenti due pulsanti separati per l'apertura e la chiusura delle morse che tengono bloccata la centina. I pulsanti sono separati dal resto dei comandi per evitare errori da parte degli operatori, che causerebbero lo sgancio della centina durante il montaggio.

3CTRALIM, by Amedeo Valoroso, control system for tunnel lifts, power supply with filter

In addition, the emergency buttons are an important safety to lock the whole machine in case of emergency situations.

The 3CTR tunnel lift control system is equipped with safety functions that prevent movement in hazardous conditions. The moment limiter and load limiter (controlled by a microprocessor) also help operators lift the ribs safely.

The stabilization controller ensures that the tunnel column laying is perfectly stabilized before starting the rib assembly session.

The control selector avoids incompatible simultaneous maneuvers, allowing operators to focus on the movements they are performing.

3CTRSEL, by Amedeo Valoroso, control selector, control system for tunnel lifts,

Control system for tunnel lifts 3CTR, the project

3CTR it is a complex project, composed of 16 different electronic boards, more than 40 integrated circuits and 550 discrete electronic components, which I made when I was 19 years old. The 3CTR tunnel lift control system controls over 40 solenoid valves (proportional and on/off). I took care of everything: the design of the wiring diagrams, the unraveling of the printed circuit boards, the realization of the prototypes, the firmware programming and also the programming of the configuration software that worked in the DOS environment.

All the handling and control functions are performed by logic integrated circuits, while for the moment and area limiter (safety devices) I used a microprocessor, completely programmed in Assembler. The moment limiter was also developed on a separate circuit (CTR LIM project), which exploited the same program, but on an independent board.

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3CTR SEL, sample schematic by Amedeo Valoroso, electronic control system for tunneling lifting equipment

3CTR, electronic board list

Relay motherboard, 3CTR R

3CTRR, drawing by Amedeo Valoroso, relay output motherboard, control system for tunnel lifts

PCB slot, motherboard, 3CTR RDX

3CTRRDX, drawing by Amedeo Valoroso, mainboard, control system for tunnel lifts

PCB slot, motherboard, 3CTR RSX

3CTRRSX, drawing by Amedeo Valoroso, motherboard, control system for tunnel lifts

Power supply and filter, 3CTR ALIM

3CTRALIM, drawing by Amedeo Valoroso, filtered feed stage, control system for tunnel lifts

Mechanical Equipment Stabilization Controller, 3CTR STAB

3CTRSTAB, drawing by Amedeo Valoroso, stabilizing controller lifting equipment

Command transmitter selector, 3CTR SEL

3CTRSEL, drawing by Amedeo Valoroso, control transmitter selector, control system for tunnel lifts

Command decoder, 3CTR DEC

3CTRDEC, drawing by Amedeo Valoroso, command decoder, control system for tunnel lifts

Rib Extender Controller, 3CTR ALL

3CTRALL, drawing by Amedeo Valoroso, control system for rib extender, control system for tunnel lifts

Moment and area limiter, 3CTR LIM

3CTRLIM, drawing by Amedeo Valoroso, moment limiter, area limiter, control system for tunnel lifts

Command transmitter, 3CTR TC

3CTRTC, drawing by Amedeo Valoroso, command transmitter, control transmitter, control system for tunnel lifts

Control transmitters, 3CTR TX1 and 3CTR TX2

3CTRTX1, drawing by Amedeo Valoroso, control transmitter, control system for tunnel lifts
3CTRTX2, drawing by Amedeo Valoroso, control transmitter, control system for tunnel lifts

Safety Data Sheet for Lifting People, 3CTR EBK

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3CTREBK, drawing by Amedeo Valoroso, safety data sheet for lifting people, control system for tunnel lifts

Arm solenoid valve amplifier, 3CTR EBF

3CTREBF, drawing by Amedeo Valoroso, solenoid valve arm amplifier, control system for tunnel lifts

Processor for proportional solenoid valves, 3CTR CEST

3CTRCEST, drawing by Amedeo Valoroso, processor for proportional solenoid valves, control system for tunnel lifts

Hour counter, 3CTR TM

3CTRTM, drawing by Amedeo Valoroso, hour counter, control system for tunnel lifts

Ecco, infine, una foto che rafficura una festa con il posacentine "decorato".

3CTR, control system for tunnel lifts, Italmec, gallery party, column holders

Project start: October 1996. Current state: discontinued.

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Posted in Valorous Amedeo projects.