STREET CRANE WIRE ROPE HOISTS

Few, if any, of the world’s wire rope hoist manufacturers offer such an extensive range of single girder monorail hoists.

The advanced modular design of ZX Hoists provides a huge number of standard hoist combinations from a relatively small number of sub-assemblies

The new ZX hoist generation evolved from the most rigorous applications. The original ZX hoist which was launched 10 years ago established Street as a world leader in hoisting technology and has been the company’s best ever selling product with an unparalleled record for reliability and endurance in a vast range of applications and environments worldwide.

When it came to developing the next generation it was therefore completely logical to retain the best aspects, such as the highly successful parallel configuration of the motor and drum. Every function of the hoist was reviewed and a whole series of innovations applied to provide new levels of user-friendliness and performance.

Finally we optimized every component using the latest finite element design techniques and a passionate commitment to every performance detail. The result is an easy to operate high endurance hoist incorporating state-of-the-art technology.

A hoist designed to fulfill expectations and improve our customer’s productivity. A hoist for tomorrow’s world in which only the most productive will prosper.

The new ZX Hoist formula for safe and efficient lifting.

The new ZX hoist sets the benchmarks in the crane industry. It provides a series of unique benefits for the user. ZX epitomizes intelligent design – for easy load handling – impressive performance – exceptional safety levels.

We invite you to compare the following hoist specification with any in the world and we think you will agree ZX represents unbeatable value for money and great investment.

Features

Precision engineered hoist gearbox with all gears oil immersed in a cast aluminum gearbox case.

• Gears permanently immersed in oil for safety and reliability year after year.
• The hollow shaft gearbox directly drives the hoist drum shaft, avoiding the need for final reduction by an overhung pinion and barrel spur arrangement outside the gearbox.
• Gears are case hardened and precision ground with special tip relief and crowning for smooth running and high reliability.
• Gear train can be viewed through a removable hoist gearbox inspection cover.

Trolley reaction roller avoids the need for a counter weight to increase wheel life.

• Sprung roller acting on the underside of the beam eliminates the need for a counterweight.
• Increases life of the wheel rolling surface as a result of lighter hoist weight.
• Pre-loading on the mechanism significantly reduces wheel slip on light load or no load start up.
• Reduced shipping and transport cost as a result of lower weight and volume.
• Caters for beam flange thickness up to 11/4”.

Torque arm safe load cut-out device (capacity restrictor) prevents the operator inadvertently overloading the hoist and crane structure.

• Protects the operator and the machine.
• Measures all the load the hoist mechanism is transmitting (not just the load in one or two ropes).
• Can be easily adjusted to the required capacity.
• Does not reduce available height of lift.
• Activated directly by the load, does not rely on measuring electrical current.

Heavy duty rope guide ensures positive rope scrolling and prevents damage in ‘slack-rope’ conditions.

• Robust functional design – the product of 60 years’ experience.
• Specially selected oil impregnated nylon material, highly resistant to breaking or permanent distortion. The material properties include self-lubrication and a good elastic memory range.
• Spring loaded inner clamping band to prevent rope build up damaging the rope guide if the operator lowers the hook block onto an object and causes slack in the ropes.
• Rope guide reduces wear on the hoist rope and drum.
• Easy to install.

Designed for improved ventilation and easy access to key components.

• External hoist motor to optimize cooling and maximize accessibility.
• Remote mounting of the hoist motor and brake prevents heat transfer in either direction.
• Heavy duty two speed hoist motor with built in protection against over-heating.
• Cylindrical rotor fan cooled design.
• Close coupled hoist motor mounting with vibration damping coupling prolongs motor and gearbox life.
• Overheating protection in the motor winding is standard.
• Class “F” insulation.
• I.P 55 (NEMA 3R) protection against ingress of dust particles and water.

Direct drive trolley with flangeless cross travel wheels and side rollers for high durability and reduced wear.

• The monorail trolley design is an outstanding feature of the Street design concept.
• It is proven by experience and generally accepted in the industry that for long term reliability and durability in travel gearing the trolley wheel should be directly driven, avoiding the need for an overhung pinion driving a spur on the trolley wheel.
• Direct drive via hardened and precision ground gears permanently immersed in oil.
• The traverse drive is removable without the need to remove or interfere with gearing or travel wheels. The trolley wheels are also easily removable.
• Sealed for life self-aligning, permanently lubricated bearings in the trolley frame ensure long life even under maximum loading.
• Sturdy flangeless steel wheels and guide rollers eliminate the problem of wheel flange wear and increase beam life.

Superior Load Safety.

• A unique hoist brake, motor and gearbox configuration ensures enhanced load safety compared to other hoists.
• Hoist brake acts on a gearbox shaft – not on the motor shaft as is the case on competitor hoists.
• When the hoist brake is applied the load will remain secure even if the motor is removed or if for any reason the motor connection or motor shaft is damaged or broken.
• Automatic braking in the event of a power failure.

IMPROVED PROTECTION AGAINST THE ENVIRONMENT.

• Temperature protection can be specified for ambient temperatures up to either 40°C (104°F) or 50°C (122°F). Special models are available for ambient temperatures above 50°C.
• Corrosion protection on all exposed components on the hoist mechanism is provided by either powder coating or zinc passivation.
• Suitable for normal indoor or outdoor environments (none saline).

Bottom Block.

• New ergonomic design for improved safety and handling.
• “Sealed for life” maintenance free bearings fitted in all sheaves.
• Robust cast aluminum sheave covers.
• Spring loaded safety catch fitted as standard.

HIGH-STRENGTH GALVANIZED WIRE ROPES.

• Compact strand structure with improved tensile strength.
• Enhanced fatigue strength for durability under cyclic bending.
• Galvanized steel rope strands for maximum corrosion protection.

Long life hoist brake.

• Low maintenance DC disc brake.
• Hand-release mechanism fitted as standard.
• Health and safety compliant asbestos free brake linings.
• Hoist brake completely accessible – not mounted inside the motor cover as is the case with competitor’s hoists.

Heavy Duty Fan Cooled Trolley Motor.

• Fan cooled with cast aluminum cooling fins for enhanced thermal capacity.
• Traverse motors are fitted with D. C. disk brakes rated for the designated duty classification as well as for emergency stop.

Over-hoisting and over-lowering limit switches.

• Over-hoisting and over-lowering of the hook are prevented by individual shunt limit switches (one for over-hoist and one for over lower). The switches are activated by the rope guide as it travels along the drum and the cut-out positions can be adjusted to suit the application.

IP 55 steel electrical control cubicle.

• Functional design with hinged door makes all components accessible.
• Quick release heavy duty plug and socket connections.
• Hours in service meter records the total time the hoist motor is energized.
• A phase failure relay prevents movement of the hoist if either the phase sequence is incorrect or one or more phases of the electrical supply fails. The relay provides further protection by preventing movement of the hoist in the event of connection to under or over voltage.
• Mechanical over-speed switch on the second gearbox reduction (optional) which de-energizes the hoist if the gearbox shaft is running more than 10% over normal speed. The operation of this device is not dependent on software or a micro-processor.
• Better heat dissipation by the finned aluminum heat-sink to transfer heat out of the control cubicle when inverters are used on traverse.
• Panel wiring is ferruled and fully identified to the connection terminal.