The Massload Custom Load Sensing Chaseblock/Fork Link is a part in the rope attachment assembly that can be use to monitor the rope tension of the Galloway in a mine shaft. Engineered to your attachment’s dimensions and loading specifications, it is built from alloy steel with electroless nickel plating, sealed to IP67 to IP68, and available with mV/V, analog, and wireless output configurations.
Every unit is engineered to your project’s specifications. Request a quote to get started.
Measuring the rope tension on rope attachments and crane sheaves is essential to confirming that every lift is within safe limits. A custom mine load pin replaces the existing structural pin at the connection, so the measurement takes place in the joint that is already there. Because a load pin needs very little headroom, the rope tension can be monitored continuously without adding links or lengthening the rope assembly.
Typical installations include rope attachment connections between chaseblock & swivel or chaseblock & spelter socket, Crane’s equalizer sheave or running sheaves or loadblock sheaves, and selected shaft suspension points. Each pin is custom designed for the connection it replaces, with custom capacity and dimensions, a safe overload of 150% to 250% of full scale, and an ultimate overload of 300% to 1000% of full scale for the high factors of safety mine hoisting requires. The pin is made from stainless steel, sealed to IP67 to IP68, rated to operate from −40°C to +80°C (−40°F to +176°F), material-tested by ultrasonic testing, proof load, and wet magnetic particle (WetMag) inspection, and calibrated to your system requirements.
Choose a 0.5 to 2 mV/V output for your own instrumentation, a 4–20 mA or 0–10 V analog output that interfaces directly with the site PLC, a connection to a transmitter or indicator, or a wireless configuration for anchor points far from the control system.
Most Common Applications: Galloway and multi-deck work stage rope attachment, suspended equipment in mine shafts, crane sheaves pin, and PLC-integrated rope load monitoring.
| Capacity | Custom |
|---|---|
| Non-linearity | +/- 1% at full scale |
| Safe Overload | 150% to 250% of full scale |
| Ultimate Overload | 300% to 1000% of full scale |
| Full Scale Output | 0.5 to 2 mV/V |
| Analog Output | 4-20mA, 0-10V |
| Maximum Excitation | 10 VDC |
| Input Bridge Resistance | 350 ± 10 Ω |
| Output Bridge Resistance | 350 ± 5 Ω |
| Operating Temperature | -40°C to +80°C (-40°F to +176°F) |
| Compensated Temperature | -10°C to +40°C (14°F to +104°F) |
| Sealing Standard | IP67 to IP68 |
| Material | Alloy Steel |
| Protective Coating | Electroless Nickel Plating |
| Material Test | Ultrasonic Test, Proof Load, WetMag Test |