Trolley Lift

PLM/250/3360/B/G Single Pillar Trolley Lift

This Single Pillar Trolley Lift has a Safe Working Load of 250 Kgs and a lift height of 3360mm. The lifting platform will be 1200 x 900mm to allow a Doman KHD 18Kw Belt Cleaner (L1040mm x W700mm x H1100mm) to be loaded by being wheeled onto the lifting platform. At the lower level there will be a 20mm high ramp to allow loading onto the lift carriage and at the upper level, there will be a landing plate to allow easy unloading. The trolley lift would be constructed from Grade 304 stainless steel with a DP finish and is fully welded throughout.

The Trolley Lift is designed to be bolted to the floor without the need for a pit. The lifting is accomplished via a motor gearbox mounted at the top of the main column and a ¾” Simplex. The trolley lift will be loaded from one direction and unload at the opposite face onto the mezzanine floor.

Safety Guard to BS EN 14120:2015 Safety of Machinery Guards

The safety guard is constructed from 40 x 40 x 3mm stainless steel box section and 3mm wire with 40mm aperture stainless steel weld mesh to meet the guidelines of BS EN 14120:2015 Safety of Machinery Guards. This guard will reach to a height of 2200mm above the upper floor level, having a hinged door at each level through which the trolley lift can be loaded and unloaded. Each door is electrically interlocked to prevent the trolley lift being operated with a door open and in addition, the doors are mechanically locked closed whilst the Trolley Lift is running. Each door may only be opened when the lifting carriage is at the appropriate level.

Trolley Lift Electrical Control

This Trolley Lift is fitted with an IP65 Stainless Steel Control Panel which is mounted on the safety guard at a convenient position to give good maintenance access under the Provision and Use of Work Equipment Regulation 1998 (PUWER). The control panel incorporates the following controls; Up, Down, Guard Release, Emergency Stop, Cleaning Key Switch and a Reset Facility. There will be a remote Stainless Steel push button station at the upper level incorporating the following controls; Up, Down, Guard Release and Emergency Stop.

Dual Upper and Lower end of travel limit switches are positioned to prevent inadvertent adjustment or damage but are easily adjustable by trained personnel for fine adjustment on site. The Trolley Lift operation is latched so that pressing the respective ‘Up’ or ‘Down’ push buttons once will raise or lower the lift to the other floor level. Each time the Lift Carriage activates the upper limit switch, an electrical actuator will be driven out underneath the lift carriage to support it while it is loaded. Before the lift can move again, the actuator will retract automatically once the down button is pressed.

Trolley Lift Safe Access System

This Safe Access System will be fitted to the Trolley Lift during manufacture to allow access to the inside of the safety guard at the lower level for maintenance and housekeeping. The Access System will operate as follows:-

• The lift frame must be empty, at the full up position and the safety guard gate must be closed
• At the full up position, the lift carriage is prevented from moving by a 50mm support bar driven out beneath the lift carriage using an electrical actuator
• As the bar is engaged, it will alter the state of 2 off separate safety limit switches
• The one switch will disable the machines safety circuit and relay
• The second limit switch will allow the lower safety guard door to be opened providing that the Safe Access Key Switch has been operated
• It is now safe to enter the lift enclosure with the machine disabled and the lift carriage supported
• To re-instate the machine operation, the above sequence is reversed