Dongqi 2t MHO Single Girder Gantry Crane 9m Lift Factory Sale Greece

The MHO model European-spec single girder gantry crane from Dongqi Crane is developed with the NR/NRS European-spec electric hoist as its lifting mechanism. It delivers superior performance, safety and reliability, energy saving and high efficiency, low noise and environmental protection—the defining characteristics of the European-spec crane family applied to a gantry configuration.

The MHO is the correct lifting solution for workshops, warehouses, power stations, and similar facilities where overhead bridge cranes cannot be installed. Whether the building lacks a suitable roof structure for a runway, the process requires the crane to span over equipment or stockpiles, or the facility needs a rail-mounted lifting system on the floor, the MHO provides full gantry capability without depending on the building’s overhead steelwork.

Design is based on FEM / DIN standards, with a compact structure and small limiting dimensions that make efficient use of available space.

Why a Gantry Crane: When the Building Cannot Carry the Crane

A bridge crane depends on the building. Its runway beams must be supported by roof columns or overhead steelwork, and the building structure must be designed for the crane’s wheel loads from the start. A gantry crane removes that dependency. The MHO carries its own support structure—main girder, legs, and ground beams—and travels on rails laid on the floor or foundation.

This makes the MHO the practical choice when:

• The building has no runway structure or was not designed for a crane.

• The process area is too wide or irregular for a conventional bridge crane runway.

• The crane must cover outdoor yards, storage areas, or workstations beyond the building envelope.

• The facility needs lifting capability without civil works on the building frame.

The single girder configuration keeps the gantry structure lighter and more economical than a double girder gantry of comparable span, while the European-spec NR/NRS hoist preserves the low-headroom and precise-control advantages of Dongqi’s crane platform.

Technical Specifications

Capacity and span note. The standard MHO platform covers 3.2–20 t and spans from 7.5 m upward. For spans below 7.5 m or capacities outside the standard range, Dongqi reviews the leg structure, rail foundation, and wheel load together. The user-specified 3–31.5 m span range represents the broader engineering envelope; standard catalogue configurations begin at 7.5 m.

Design and Construction

Main girder and structure

The main girder is a box-type welded structure fabricated from Q235B steel plate, with Q345B available for higher strength requirements. The girder is designed for vertical deflection of L/800, ensuring rigidity under rated load. Steel plates are shot-blasted to Sa2.5 before fabrication, and welds are inspected by X-ray non-destructive testing. The main girder and end beams are connected with 10.9-grade high-strength bolts, ensuring precise alignment and stable operation.

The end beams are equipped with double wheel rims, buffers, and anti-derailment devices. The gantry legs and ground beams complete the self-supporting structure, transferring load directly to the rail foundation rather than the building.

NR/NRS European-spec hoist

The NR/NRS electric hoist serves as the lifting mechanism, bringing the European-spec advantages of compact dimensions, low headroom, and modular construction to the gantry platform. The NRS variant is equipped with an independent running trolley, recommended for capacities of 16 t and above or where the track is curved.

Drive and control

The crane travel mechanism uses a uniform drive arrangement with soft-start motor characteristics. Frequency conversion is available for hoisting, trolley travel, and long travel, providing stable operation with stepless speed regulation, soft start/stop, and reduced load swing. The integrated transmission design—motor, brake, and reducer combined—reduces wear points and contributes to energy saving and high efficiency.

The silent drive characteristic of the European-spec platform lowers equipment noise, supporting low noise and environmental protection in the working area.

Safety and Protection

The MHO gantry crane is supplied with a comprehensive protection set configured to the working conditions:

• Overload limiter — prevents lifting beyond rated capacity.

• Height limiter — limits upper and lower hook travel.

• Stroke limiter — limits trolley and long-travel motion at extremities.

• Photoelectric limiter — anti-collision protection between cranes or end approaches, where specified.

• Phase sequence protection — protects motors from incorrect phase connection.

• Emergency stop — immediate power isolation at the operator interface.

• Buffers and anti-derailment devices — at travel extremities and end beams.

• Crane black box (optional) — recorded analysis functions for operating data, added based on customer requirements.

Customized cranes can be produced to suit specific span, capacity, lifting height, control, and environmental requirements beyond the standard catalogue.

Control Options

The MHO supports flexible control configurations:

• Pendant control — suspended station for ground-level operation.

• Remote control — wireless operation for flexible positioning and improved visibility during load handling.

• VFD interface — integrated across motion axes for precise, smooth control.

Applications

The MHO single girder gantry crane is suitable for lifting and handling objects in workshops, warehouses, power stations, and similar places where bridge cranes cannot be installed. Typical applications include:

• Workshops and assembly areas — material handling where roof-mounted runways are impractical or unavailable.

• Warehouses and logistics centers — loading, unloading, and stacking in buildings not designed for bridge cranes.

• Power stations — maintenance lifting and auxiliary material handling in areas without overhead crane runways.

• Outdoor yards and storage areas — rail-mounted lifting for steel, precast concrete, and bulk goods.

• Maintenance shops and fabrication yards — general lifting where a self-supporting crane structure is required.

• Precast concrete plants, steel service centers, and equipment manufacturing — Dongqi’s MHO platform has been applied in these sectors where span and floor-based rail systems suit the process layout.

The MHO is particularly appropriate for facilities that need European-spec performance and efficiency without the civil works and structural requirements of a bridge crane runway.

Selection Guidance

Dongqi reviews span, capacity, rail foundation condition, lifting height, duty cycle, and environment together rather than quoting a gantry crane on capacity alone. The leg structure and rail system are designed as part of the crane, not as an afterthought.

Manufacturer: Dongqi Crane

Dongqi Crane designs and manufactures the MHO single girder gantry crane as a FEM/DIN-based European-spec lifting system, integrating the box-type girder, gantry legs, NR/NRS hoist, and electrical controls as a matched solution. Dongqi’s MHO platform is applied across workshops, warehouses, steel plants, precast concrete facilities, and outdoor yards, with customized configurations available for specific span, capacity, and environmental requirements.

Request a Configuration

To receive a matched MHO gantry crane proposal from Dongqi Crane, please provide:

1. Capacity required (t, standard 3.2–20 t)

2. Span (m, center-to-center of rails; standard 7.5–31.5 m)

3. Lifting height (m, hook travel required)

4. Rail condition (existing or new; foundation type; rail gauge)

5. Working environment (indoor/outdoor, temperature, dust, corrosion)

6. Duty cycle (hours per day, shifts, load spectrum)

7. Control preference (pendant, remote)

8. Whether the crane must work in multiple bays or on a curved track

9. Any special requirement requiring a customized crane