Case Study: Replacement hydraulic bearing lubrication for plain bearings

Requirements: Replace a hydraulic bearing lubrication system to improve oil distribution and condition monitoring.

The new bearing lubrication system was designed to allow precise flow of oil to each individual bearing housing port and improve distribution across the face of the journal.  Overall oil flow was increased to optimize wedge development and maximize bearing life.  The system provided monitoring of overall oil flow as well as oil flow to each individual bearing port.

The system was custom manufactured on separate containment skids to allow the system to be moved into the basement of the hoist room through existing access hatches.  The tank included control and monitoring of oil temperature, levels and filtration.

Site support was provided during system installation to assist with tube routing, electrical integration into the existing control system as well as during set-up, commissioning and testing.

Hoist Bearing Lubrication Systems are only part of our available services, check out our other services here:
http://spencerengineering.com/services/

Case Study: Add pinion brake to existing double drum service hoist

Requirements: The site was wanting to perform single drum man travel during emergencies. The hoist was a double drum hoist with a single motor and was not equipped with a pinion brake. A pinion brake needed to be added to the existing hoist without affecting the current hoist/motor locations. This pinion brake would ensure that two brakes were always available during single drum operation.

A pinion brake coupling was designed to replace the existing motor coupling. Calipers were fitted to custom designed stands which allowed for mounting between the existing hoist motor and bull gear.

Due to space limitations a specially design pump unit was supplied that allowed for mount in the available space.

Pinion Brake Add-on’s are only part of our available services, check out our other services here:
http://spencerengineering.com/services/

Case Study: Apply a new hoist control, safety controller and brake regulator to an existing hoist

Requirements: Design and supply an upgrade to the existing hoisting plant requiring new hoist control, electronic Lilly, brake regulator and new operator interface HMI. The hoist control needed to be integrated with an existing AC wound rotor control for service duty.

The hoist control panel, Safety Cube and brake regulator panels were integrated into one panel group to minimize on‐site wiring and to meet the limited space available.

The new console included two large touch‐screen monitors for increased functionality and ease of operation.

A maintenance computer was provided with long term data logging as well as diagnostic software with detailed troubleshooting capabilities.

Mine Hoist Control Systems are only part of our available services, check out our other services here:
http://spencerengineering.com/services/

Case Study: Increase in Braking Capacity

Requirements: Our customer was facing increasing demands from their hoist which, in its existing configuration, the braking capacity was not going to be able to meet the demands.

The system in place included bulky brake weights and there was limited space available for any new equipment.

The solution included the design of new drum brake calipers, brake posts and tie rods. The brake weights were replaced with new spring packs with hydraulic release system with an increased braking capacity for the hoist.

The brake assembly was fully assembled to prove a test fit in the shop before being released to the customer.

Mine Hoist Brake Caliper Design Guide rope replacement engineering is only part of our available services, check out our other services here:
http://spencerengineering.com/services/

Case Study: Incorporate an upgraded brake control into an existing brake system and hoist control

Requirements: Add a new brake control with regulated emergency braking within an existing hydraulic brake system and hoist control.

An older hoisting plant needed an upgrade to an outdated brake control and brake system. Spencer Engineering has an advanced brake control system that incorporates complete redundancy for all functions and is easily customized for this, or any other brake application. The new panel incorporates state-of-the-art manifolds and fully monitored valves for the entire brake system, to simplify maintenance and trouble-shooting.

The new brake control is PLC controlled for automatic hoisting and provides regulated braking during emergency stops. A new HMI system for the hoist operators was included as an upgrade to the operator’s console.

Regulated Brake Control Systems are only part of our available services, check out our other services here:
http://spencerengineering.com/services/

Case Study: Incorporate an upgraded brake and hoist control into an existing hoist

Requirements: Design and supply an upgrade to the existing hoisting plant requiring new hoist control, electronic Lilly, brake control with new hydraulic supply and a new operator’s console. The hoist control needed to be integrated with an existing AC wound rotor control for automatic skipping.

The hoist control panel and the new Safety Cube panels were integrated into one panel group to minimize on-site wiring and to meet the limited space available.

The new hydraulic supply incorporated submersible pumps to satisfy a reduced footprint and also provided quieter operation – filtration, temperature control and system monitoring was improved.

The new console included two large touch-screen monitors for increased functionality and ease of operation.

Mine Hoist Control Systems are only part of our available services, check out our other services here:
http://spencerengineering.com/services/

Case Study: Replacement of MG Set with New Drive and Hoist Control

Requirements: Outdated technology replaced and upgraded to an existing hoist ‐ limited time for change over and limited space, motor needed to be sent out for refurbish during the shutdown.

A new digital drive was engineered and specified for the duty requirements. To satisfy the limited space and shutdown constraints, a mezzanine was constructed above the existing power and control cabinets and the new installation was completed and pre‐commissioned, ready for a quick switchover from old to new. Downtime for the change, including final commissioning was less than two weeks, during which the hoist motor was removed and sent out for refurbish (4 days).

New Mine Hoist Drive and Control Systems are only part of our available services, check out our other services here:
http://spencerengineering.com/services/