Hoists

Roxsyle Hoist System Project Examples

SINKING HOIST

Project Summary:

Roxsyle Systems supplied the electrical power and control systems for two 900HP mobile sinking hoists. The hoists are moved to customer sites for use in various shaft development projects. The modular design of the hoist allows for the various elements to be installed in electrical e-houses made from converted shipping containers for weather protection of critical components and ease of transportation from job site to job site. The hoists continue to travel across the US.

PRODUCTION HOIST

Project Summary:

Roxsyle Systems successfully completed a PLC upgrade on an existing production hoist being used at a coal mine. The turnkey project removed obsolete components from the system, minimizing the risk of unplanned down time, and utilizing common parts for streamlines spare parts warehousing. Roxsyle completed the installation and commissioning during a scheduled 36 hour weekend outage to get the hoist operational. A second production hoist PLC upgrade at the same customer site is in progress and expected to be completed by Q3 2024.

SERVICE HOIST

Project Summary:

Roxsyle Systems has collaborated with mechanical installation contractors to provide a complete hoisting solutions for customers in the Illinois Basin area. In all cases, Roxsyle worked with the customer to design the hoist control system to meet operational and safety requirements for both the surface and underground, including custom inspection pendants, shaft gate locks, and backup generator feed. Roxsyle also assisted in the engineering of the high voltage substation feed and hoist house layout.

GUARDIAN Digital Mine Hoist Protection

ENGINEERED FOR SAFETY

The Roxsyle GUARDIAN is an independent system to monitor the speed and position of a mine hoist. In the event of an overspeed or overtravel condition, the GUARDIAN will initiate an automatic controlled stop of the hoist.

In addition to maximum and approach speed limits, the GUARDIAN system develops a safe speed profile for the hoisting cyclefrom actual measured hoist data. This layered approach results in complete protection at every point in the hoisting cycle.

IMPLEMENTATION

Automatic re-synchronization of the GUARDIAN ensures accurate functionality

with reduced maintenance.

Operator interface for system data, troubleshooting, and setup functionality is provided by an integrated touch screen.

The GUARDIAN system is designed to integrate with new and existing hoist controls.

OPTIONS:

Remote Access Capability
Installation
Single or Double Drum Applications
Active Brake Control

Frequently Asked Questions ABOUT MINING HOISTS

What is a Sinking Hoist?

A Sinking Hoist is used during the construction of a new mine shaft, or to ‘Sink’ a shaft. In the traditional drill and blast method of shaft sinking, the hoist is used to lower personnel and equipment to the working area along with hauling muck to the surface. The hoist is typically used in conjunction with winches. The winches can be used to lower a work deck or concrete forms.

Sinking hoists are traditionally more mobile than hoists installed for mine operations. This allows for quick mobilization when a new shaft is being built and quick de-mobilization when the shaft is complete.

The control systems for sinking hoists are designed to be simple and robust. They are controlled by an operator

What is a Production Hoist?

A Production Hoist is used in mining applications to remove minerals or materials that are mined underground to surface facilities for processing or storage. Following the general concept of a mine hoist, the production hoist is comprised of mechanical and electrical equipment that moves conveyance from the top of the shaft to the bottom, where the material is collected and moved up the shaft to the surface. Once above ground level, the material unloaded from the hoist conveyance and transported. Production hoists typically move at faster speeds and are designed for automatic operation to maximize the amount of material moved within a period of time. The control systems for production hoists are designed for safety and reliability.

What is a Service Hoist?

A Service Hoist is used to transport personnel and equipment underground. The equipment or personnel are loaded on a cage and go to their destination. A Service Hoist can serve multiple levels within the mine. They are like an overgrown elevator!

Service Hoist control systems can be either manually operated or automated. A lot of mines operate using a combination of manual and automatic operation.

Operating speeds are typically lower for a service hoist compared to a production hoist.

What is the difference between an Auxiliary Hoist and an Emergency Escape Hoist?

An Emergency Escape Hoist is used to evacuate a mine when the primary escapeway is not accessible in an emergency. The hoists usually have a small cage that will transport a few people at a time. Emergency Escape Hoists allow personnel to exit the mine, but not enter it.

An Auxiliary Hoist is similar in size to an Emergency Escape Hoist, but allows personnel to exit AND enter the mine using it.

Roxsyle has completed hundredS of hoist systems

Roxsyle Hoist System Project Examples

SINKING HOIST

PRODUCTION HOIST

SERVICE HOIST

GUARDIAN Digital Mine Hoist Protection

ENGINEERED FOR SAFETY

IMPLEMENTATION

OPTIONS:

Frequently Asked Questions ABOUT MINING HOISTS

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