Korenski reduktor

Mayrhofer

Root Reducer – new (in storage)

comprising:

1. Tapered Roller Conveyor

System Specifications:
Timber lengths: 2 m to 4.6 m (main length: 2.7 m), extendable up to 8 m (optional, at extra cost)
Log diameter: 200 mm to 1,100 mm
Wood types: softwood or hardwood, max. single log weight 2 tonnes
Throughput: up to 5 pieces / minute, of which with root reduction: up to 2 pieces
Operation: single-shift operation

Dimensions:
Length: approx. 5 m
Roller width: 800 mm

Description:
Tapered roller conveyor for round timber with housed bearings (nominal diameter: 60 mm);
External diameter of tapered rollers: 450 mm; Drive chain: roller chain 5/4“;
built-in 4-arm, hydraulic ejector for transfer into the root reducer, steel housing slide bearings; drive of the tapered roller conveyor via gear motor with intermediate gear and soft start; integrated light barriers (2 pcs) for log positioning

2. Root Reducer

Dimensions:
Length: approx. 7 m

Description:
- 3 driven chain beds, drive chain: roller chain 6/4" with square lugs
- Drive via gear motor
- 2 support mounts with non-driven rollers (roller bearings),
- hydraulically swiveling clamping device for top clamping with V-bed
- Drive chain: roller chain 6/4", drive via gear motor;
- housed milling shaft with reversible, exchangeable knife blocks (4 blades per knife block), drive via three-phase motor (drive power: 75 kW; flexible tyre coupling)
- star-delta operation for the drive motor (energy-saving mode for idling operation, automatic switching during reduction process)
- milling shaft length: 1,200 mm, mounted on a pivoting, adjustable drive cradle (hydraulic drive)
- 4-arm hydraulic ejector
- integrated hydraulic unit (15 kW)
- mounted log thickness measurement for automatic calculation of milling times (control system included in item 2), for timber lengths under 3.5 m, the support position of the log needs adjustment (shortened reduction length)
Reduction length for log length of 2.7 m: 0.7 m, for log length of 3 m: 0.9 m

3. Control System
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- Control cabinets in TN system design, equipped with controllers for all drives of items 1 and 2,
- Power supply: 3x400 VAC; Rittal control cabinet; Motor contactors and contactors by Siemens
- Freely programmable controller by Bernegger & Rainer
- Control cabinets completely wired and tested
- Spare slots for approx. 5 drives
- Circuit diagram for the system
- Signal exchange via potential-free contacts
- Emergency stop circuit; incl. necessary sensors; manual operation possible

Functional description of controls:
- automatic reduction operation – for log lengths below 3.5 m, adjusting the support position (timber alignment) is required (shortened reduction length)
- automatic log positioning via tapered roller conveyor, reduction process needs to be activated manually (reduction preset)

Price: ex works

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