MHE Roof Powered Systems

MHE-Demag is the manufacturer & supplier of building maintenance systems (also known as gondola or building gondola) with proven track record in Australia, Indonesia, Malaysia, Philippines, Singapore, Thailand, Taiwan & Vietnam.

MHE-Demag’s building maintenance systems (also known as gondola or building gondola) are installed in most of the iconic landmarks around the region, such as Petronas Twin Tower (Malaysia), Marina Bay Sands (Singapore), BNI 46 (Indonesia), Bitexco Financial Tower (Vietnam), KL Tower (Malaysia) and Okada Manila (Philippines). All building maintenance systems are tailor-made based on the iconic buildings’ configuration.

We always ensure that all building maintenance systems supplied by MHE-Demag are of the highest quality and reliability. Stringent tests are carried out in the factory and on-site to ensure that all safety features meet local and international regulatory requirements such as the EN1808 code.

The cradle of the roof-powered BMU is lifted and lowered with 2 or 4 suspension ropes. These wire ropes are wound in a single or multi-layer drum type hoist located in the roof car machine housing. The wire ropes used for the roof-powered gondolas are classified as double-active rope suspension systems and a rope safety factor greater than 12 ensures that we comply with the EN 1808 norms.

In case of emergency, the drum hoist unit in the roof car could be manually released and the cradle safely lowered to the landing ground below.

With a wide range of solutions, MHE-roof-powered building maintenance units (BMU) easily overcome virtually any access challenge of today’s increasingly complex building design process.

The main advantages of MHE building maintenance systems are:

• A high-quality drum hoist system with a secondary shoe brake operating directly on the winch drum
• Conductors inside the wire rope to transmit signals between the cradle and roof car
• Simple and safe to operate
• Low maintenance costs
• Long asset life

Types of BMU available:

Type 1: A track-based standard system, twin luffing jibs design with a maximum 3.4 m outreach, suitable for use on building façades without major protrusions or recesses and with sufficient roof space to accommodate the track system as closely as possible to the parapet or along the length of the roof’s edge.

Type 2: A track-based standard system, twin luffing jibs design with a maximum 3.4 m outreach, with the track system fixed to the inside face of the parapet wall. Especially for buildings with roofs that are not suitable for bearing the track load or that have insufficient space, as well as for buildings with particularly high parapets.

Type 3: A trackless standard system, twin luffing jibs design with a maximum 3.4 m outreach, for use on roofs with a load-bearing concrete runway. The machine moves on large sized wheels with durable polyurethane tyres, guided by guide rails or inside the parapet with rubber tyre contact rollers.

Type 4: A track-based crane-like system with a compact design and a central jib and rotating head. Particularly suitable in cases where a medium to large outreach (up to 12.5 m) is required because of terracing or roof obstacles. A rotating head on the end of the jib allows the cradle to always travel parallel to the façades of the building. For special requirements, this Type 4 system is also available as a trackless version, depending on the outreach and track gauge.

Type 5: A track-based crane-like system characterised by a long jib with a rotating jib head for reaches of up to 35m. This system is suitable for overcoming even substantial terracing. Thereby, a single unit of this type, installed in the right position, is able to cover an entire building complex, including its terracing and annexes. According to the building requirements, the jib is available in fixed length or in telescopic versions. The unit usually operates on tracks but can be fixed stationary to the building. If required, the high rotary columns of these systems can also be supplied in telescopic execution to improve the parking position in particular situations. With different façade designs, different types of cradle which will work effectively are available.