AS 7 钢丝绳葫芦

The compact powerhouse

The AS 7 wire rope hoist programme is the innovative classic in hoisting and crane technology worldwide. The modular system enables innumerable combinations of the subassemblies for customised solutions.

The AS 7 series is designed in two variants for the upper lifting capacity range to 125,000 kg. The ASR 7 wire rope hoist is the reduced version of the tried-and-tested AS 7 wire rope hoist. It is designed for a safe working load range from 20,000 kg to 32,000 kg and closes the gap between efficient use of the SH wire rope hoist programme and the AS 7 wire rope hoist programme. The revised design as twin hoist covers the same fields of application as the AS 7 wire rope hoist, albeit with higher lifting capacities, greater lifting heights and faster lifting movements. One important safety feature of the AS 7 wire rope hoist when designed as twin hoist is its exact positioning of the load. As the rope of the twin hoist runs in opposite directions simultaneously, the load is lifted and lowered without any sideways movement of the hook.

If wanted, the complete wire rope hoist programme is also available in explosion-proof design for Zone 1, Zone 2, Zone 21 or Zone 22.

Two designs for load capacities up to 125,000 kg
Reduced-size ASR 7 for a safe working load range from 20,000 kg to 32,000 kg, with larger height of lift, standard with exact load measurement at the rope anchorage (entry-level model)
Innovative drive technology with cylindrical rotor motor with monodisc spring-loaded brake
Stationary version or double rail crab for systems and crane building, optionally available as underslung trolley or articulated trolley
Compact construction and low approach dimensions
Higher load capacity, hoisting speed and lifting height as twin hoist
Largely maintenance-free, low wear, long service life according to FEM/ISO standards
Optionally available in explosion-proof design according to ATEX, IECEx

In spite of its high lifting capacity, the AS 7 wire rope hoist with its double rail crab is surprisingly compact. The AS 7 is particularly suitable for high safe working loads to 80,000 kg or crane systems requiring a high ISO classification according to FEM/ISO standards
As twin hoist, the AS 7 ZW wire rope hoist enables a lifting capacity to 125,000 kg, higher lifting speeds and exact positioning without sideways movement of the hook.
The AS 7 wire rope hoist can also be operated as custom solution with a monorail trolley underneath the crane bridge.
The AS 7 wire rope hoist can be coupled to another type of wire rope hoist like, for example, an SH wire rope hoist for synchronous operation in tandem mode per radio remote control.
The AS 7 wire rope hoist is able to cope with rough conditions. In spite of high temperatures and dusty environments, the AS 7 ZW works reliably.

Models

The different models and trolley variants allow not only a wide variety of uses, but also very individualised solutions tailored to specific requirements.

Stationary model

The AS 7 wire rope hoist can be used as stationary hoisting or towing equipment, for example in systems manufacture. Depending on the application, the rope lead-off angle, the attachment of the hoist and the mounting position of the hoist motor can be varied.
OE double rail crab

The OE double rail crab is intended for use on double girder overhead travelling cranes. The extremely compact construction makes very low approach and headroom dimensions possible and the available space can thus be used to the full. The double rail crab is available with various track gauges for the whole load capacity range.
Twin hoist

The AS 7 ZW wire rope hoist can also be used as stationary hoisting equipment or with the OE double rail crab.
Horizontal towing equipment in systems building

The AS 7 wire rope hoist used as horizontal towing equipment in systems manufacture.
Vertical towing equipment in systems building

The frequency controlled AS 7 wire rope hoist used bolted to the floor as vertical towing equipment in systems manufacture.
Guided load lifting

The AS 7 wire rope hoist with guided load pick-up.
Double rail crab

The AS 7 ZW wire rope hoist is mainly used with a double rail crab on double girder overhead travelling cranes.
Rope lead-off angle

Various rope lead-off angles are made possible by rotating the rope guide on the rope drum and setting the wire rope hoist up accordingly. The rope guide is adusted to suit the rope lead-off angle.
Angle of installation

The AS 7 wire rope hoist can be mounted in various angle ranges. For rope drives with bottom hook block the wire rope hoist must always be installed with its longitudinal axis horizontal.
Single-grooved rope drum (Standard reeving)

The model with single-grooved rope drum is used for stationary hoisting or towing equipment or combined with various travel carriage variants.
Double-grooved rope drum (True vertical lift)

If true vertical lift is required, we recommend this model with double-grooved rope drum (right-/left-hand thread). This version can be used both in stationary form or with travel carriages.
Double-grooved rope drum (Reeving for multiple load pick-up points)

The model with double-grooved rope drum (right-/left-hand thread) is used for many lifting and towing tasks where the load must be picked up at more than one point and true vertical lift is required.
Twin hoist (Reeving for true vertical lift)

Independent of the grooving of the rope drum, stable guiding of the hook and precise positioning of the load are guaranteed.

型号	起重量 [kg]	标准绕绳	垂直起升绕绳	固定式
ASR 7	32,000	4/1	–	0
AS 7	45,000	–	10/2-1	0
AS 7	50,000	2/1, 4/1	2/2, 4/2, 8/2	0
AS 7	80,000	6/1	–	0
AS 7 ZW	125,000	–	ZW 4/2-1, ZW 6/2-1, ZW 8/2-1, ZW 10/2-1	0
标配

Technology

The AS 7 wire rope hoist programme boasts superior technology. The largely maintenance-free components of the modular wire rope hoist are matched to each other optimally. They guarantee constant performance, long service life and high efficiency.
Rope and rope guide
- Highly flexible special rope with long service life
- Field-proven enclosed rope guide in spheroidal graphite cast iron has no temperature limitations
- The GJS material (previously designated GGG 40) is suitable for highest and lowest temperature ranges
- 360° rope tensioner prevents the formation of rope slack
Paint
- Standard paint treatment as per RAL 6018 yellow-green and RAL 7021 greyish black
- High-quality primer and top coats for standard applications
- Off-standard paint treatment for outdoor use or corrosive ambient conditions
- Shade as per customer’s requirement
Overload cut-off
- Permanent electronic monitoring of the suspended loads
- Limitation of the maximum load by load measurement at the rope anchorage possible in the case of multiple reeving
Hoist gear
- All gear steps with lifetime lubrication in oil bath
- Minimal noise development thanks to modern technology
SLE/SMC control and motor management
- Condition monitoring as standard
- Inching operation is suppressed thus reducing stress
- All common control voltages available
- High degree of safety thanks to overdimensioned contactors
- Monitoring of the temperature of the hoist motor and travel motor
Brake
- Low-maintenance asbestos-free brake; needs no adjustment
- Long service life thanks to generously dimensioned brake
- Brake easily accessible for inspection from outside
- Motor management ensures low wear
- IP 65 protection
Motor
- Special-purpose motor for hoisting applications
- ISO classification according to FEM/ISO standards, high duty cycle and switching operation frequency
- IP 55 protection, thermal class F
- Motor outside rope drum, highly efficient motor cooling, maintenance-friendly
- Temperature control by ptc thermistors
Rope drive
- Optimised ratio of drum to sheave diameter ensures low wear on rope
- Flexible and long-lived wire rope
- Wear-resistant return sheaves, fine machining provides rope-friendly grooves in rope drum
- Drum easily accessible for rope replacement
- Robust bottom hook block with low headroom in spite of large dimensioning of hook

Options and features

Although they are already first-class in their standard design, you can make the hoists even safer, more economical and more convenient with a range of mechanical, electrical and electronic options. They simultaneously improve performance, prolong service life and make it possible to adapt the hoist individually to specific requirements.

Here are some of the options frequently used.

Control pendant
- Robust control pendant with EMERGENCY STOP palm button and control cable
- All switching elements for hoist, cross, and long travel are 2-step
- IP65 protection
- Additional buttons, such as horn activation, can be easily fitted
Radio remote control units
- Flex-Wave pushbutton unit with protective cover and carry strap
- VUE pushbutton units with feedback display
- MLTX2 joystick transmitter with controller and carry strap
- Optional battery chargers with standard rechargeable batteries
- Robust, fibre-reinforced plastic housing, IP66 protection
- Frequency ranges 433, 863 or 2,400 kHz
- Also available in explosion-proof version
- Other radio remote control units optionally available on request
Emergency hoist limit switch (gear limit switch)
- As standard, the hoist is equipped with a geared limit switch for top and bottom hook position and an operational limit switch for top hook position
- As an option, up to eight switching elements can be fitted to the switch. This permits further stopping positions and operational limiting in bottom hook position
SMC Multicontroller
- Continuous load monitoring by overload cut-off even if hoist is idling
- Overload protection with ALC automatic load control
- Load spectrum memory for load-related operating time summation
- Operating data registration, e.g. operating hours, load spectrum, motor switching operations and load cycles
- Data exchange with PC possible
Load display
- SLD four-digit 7-segment load display, large format, luminous red
- Available with various interfaces including CAN
- Choice of 100 or 150 mm digit height
- Combinable with the hoist’s overload sensor and the SMC multicontroller available as an option, no additional fixtures or load attachment devices are required, the headroom of the hoist remains unchanged
Signal transmitters
- Visual and acoustic signal transmitters such as horn and flashing light can be mounted on trolleys
- Signal transmitters can be activated by a button on the control pendant
Manual release of hoist brake
- The brake release device permits the hoist brake to be released manually and thus the load to be lowered during a power cut.
- As an option, every hoist can be equipped with this supplementary equipment to the standard brake.
Rope drum brake
- Redundant brake system provides increased safety
- Intercept and holding brake prevents the load falling even if the gear should break
- Control is effected by a speed sensor and safety device
Frequency inverters for “lifting” and “travelling”
- Smooth starting and braking characteristics
- Load swing greatly reduced
- Fast, precise positioning of the load, corrective switching operations rarely necessary
- The reduced dynamic load means longer service life for all components
- Worldwide approvals for all frequency inverters
Twin Drive Concept TDC
- Prevents sagging of the load even when the gearbox fails
- Permanent brake, drive and load monitoring
- Two synchronously controlled hoist motors and brakes
- Two manually releasable brakes for emergency lowering
- Robust, completely encapsulated system
- Service and safety brake of identical design
- Up to 60 % higher load capacities when transporting non-molten metals