6700 Production/Switch Tamper

The 6700PD Tamper is the latest model of Harsco Rail’s well-known production and switch tamper. Harsco Rail’s 6700PD Tamper is a high tech, refined machine known for top quality production, switch tamping, and transit system work. Harsco’s Positive Displacement Workhead Technology is an available option for this machine. Harsco Rail tampers are designed to meet local standards of the customer.

Performance:

  • Squeeze-type tamper
  • Automatic clamping
  • Excellent visibility from control cab during work
  • Truss framework
  • Equally effective on wood or concrete ties
  • Positive displacement vibrators working at a frequency of 50 Hz – amplitude 3/8 in. (9.5 mm)
  • Laser Alignment
  • Production Reporting
  • Drone Tamper
  • Available in narrow and broad gauge models

The addition of Tie Finder Technology results in a machine with intelligent automatic indexing, thereby increasing productivity while reducing operator fatigue. The marriage of probes designed to detect the location of either wood or concrete ties with a machine’s previously existing automatic cycle allows for fully automatic work.

Tie Finding can be added as a factory option or as a field kit to any Harsco Rail tamper featuring the Jupiter II Control System.

INNOVATIONS:

The 6700 Positive Displacement (PD) Workhead is a ballast compaction unit, using 16 paddlestyle tamping blades (2 per head). The workheads are positioned hydraulically to precise depths using position sensors located on each head to provide position feedback to the Jupiter II Control System. The workheads can be used in a normal production-mode of operation on straight-line tangent track or can be operator positioned side-ways hydraulically (swung in/out to clear track obstructions as needed) to accommodate switch work tamping in turn-outs and crossovers.
The 6700’s positive displacement workhead uses a dual-tool, oscillating action to help auger through and displace cemented ballast to get below tie depth. The squeeze/vibration action of the paddles helps life (‘nip’) the tie against the bottom of rail and compacts the ballast under the tie currently being tamped. The positive displacement of the PD workhead paddles is approximately .5 in. and oscillates at approximately 3200 cycles per minute.

The Light Reference System consists of the light buggy, mask sensors, surfacing sensor, and a lining sensor located at the rear of the machine. An encoder wheel by the right rear wheel is also used with the auto curve liner system.

The Surfacing System detects the low spots in the track and the cross level between the two rails. The upper lights on the light buggy shine through the slot in the upper masks on the mask follower. The sensors mounted on the hydraulic and fuel tanks then detect the light and determine the position of the track.

The Lining System detects how far the track is out of alignment from being straight and also determines the proper track position in curves. One lower light on the light carriage shines through the slot in the lower mask on the mask follower. The sensor mounted on the rear rail follower then detects the light and determines the position of the track.

Key Specifications:

Length
13.3 m (43 ft. 6 in.)
 
Max Speed
55 km/h (35 mph)
 
Max Superelevation
15 cm (6 in.)
 
Max Lining Offset
15 cm (6 in.)
 
Engineer to Order
Machines are designed to meet the customer’s specifications

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