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Semi-Gantry Crane
Description:
The semi gantry crane, also known as semi portal crane, is a practical and cost-effective lifting equipment that combines the advantages of overhead crane and full gantry crane. Different from full gantry cranes with double-side supporting legs, it adopts a unique single-leg structural design. One end travels on the factory building’s overhead supporting beam, while the other end is supported by an independent leg moving on the ground rail. This innovative structure perfectly adapts to factory workshop, outdoor yard and material handling scenarios with limited space and fixed building structures. It is widely used for frequent loading, unloading, lifting and transferring of bulk materials, mechanical equipment and finished products, serving as an indispensable core handling equipment for industrial production and logistics storage.
Structural Form:
The semi gantry crane features a compact, reasonable and modular integrated structure, mainly composed of a main girder, single supporting leg, end beam, traveling mechanism, electric hoist lifting system, electrical control system and safety protection device. The mainstream structural forms are divided into two categories:
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Single Girder Semi Gantry Crane: Lightweight structure, small self-weight, flexible operation and low wheel pressure. It is suitable for light and medium-duty lifting work with small tonnage and frequent operation, featuring low cost and high cost performance.
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Double Girder Semi Gantry Crane: High structural rigidity, strong bearing capacity and stable operation. It is applicable for heavy-duty, large-span and high-frequency heavy lifting scenarios, with higher working stability and longer service life.
All structural components adopt welded integral molding process, with standardized assembly, convenient disassembly and transportation, and strong on-site adaptability.
Features:
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Space-Saving & Strong Adaptability: The single-sided leg design makes full use of the existing factory building frame, saving floor space compared with full gantry cranes. It can adapt to indoor workshops and outdoor open yards without occupying extra working passages.
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Stable & Flexible Operation: Equipped with professional three-in-one reduction drive mechanism and frequency conversion speed regulation system. The lifting and traveling speed is adjustable steplessly, realizing smooth start and stop, no impact and low swing of goods during operation.
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High Safety & Reliability: Built-in multiple safety protection devices including overload limit, height limit, traveling limit, anti-collision device and emergency stop button. It is equipped with wind-proof and anti-skid devices for outdoor use to avoid equipment tilt and sliding risks.
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Low Operation & Maintenance Cost: The whole machine has a simple and durable structure with fewer vulnerable parts. The motor and drive components are highly matched, with low energy consumption, low failure rate and convenient daily maintenance and overhaul.
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Customizable Design: Supports customized span, lifting height, load capacity and working speed according to user site conditions and working requirements, meeting personalized industrial handling needs.
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Long Service Life: The main steel structure adopts anti-rust pickling, phosphating and multi-layer spray painting treatment, with excellent corrosion resistance and weather resistance, suitable for long-term outdoor and indoor harsh working environments.
Application:
Semi gantry cranes are widely applicable to various indoor and outdoor industrial lifting scenarios, covering multiple industries:
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Manufacturing Industry: Machinery processing workshops, equipment assembly workshops, mold factories, hardware factories for workpiece handling, mold lifting and finished product loading and unloading.
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Logistics & Warehousing: Factory outdoor yards, cargo storage yards, logistics transfer stations for bulk cargo stacking, handling and container auxiliary lifting.
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Construction & Engineering: Small and medium-sized construction sites, steel structure processing bases, municipal engineering sites for material handling and equipment hoisting.
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Other Scenarios: Mining auxiliary workshops, chemical plants, electric power workshops and other places that need frequent short-distance lifting operations, especially suitable for sites with fixed factory building structures and limited installation space.
Parameters:
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Span: 8m - 30m
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Lifting Height: 6m - 18m
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Lifting Speed: 0.33 - 8m/min
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Trolley Running Speed: 20m/min
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Crane Traveling Speed: 20 - 38m/min
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Driving Motor Type: Cone Squirrel-cage Motor / YZR Series Motor
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Control Mode: Wired handle control / Wireless remote control
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Working Duty: A3 - A5 (medium and light duty)
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Power Supply: 380V/50Hz/3Phase
Advantages:
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Excellent Cost Performance: Compared with full gantry cranes, it saves a set of supporting leg and rail facilities, greatly reducing equipment procurement and installation costs. Compared with overhead cranes, it has lower requirements on factory building bearing capacity and lower transformation cost.
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High Space Utilization: The unilateral support design makes full use of the longitudinal space of the factory building, without affecting the normal passage and operation of ground equipment, maximizing the use of workshop and yard space.
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Simple Installation & Flexible Layout: The modular structure is easy to assemble and disassemble, with low installation difficulty and short construction cycle. It can be flexibly arranged according to site terrain and production layout, with strong scene compatibility.
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Energy-Saving & Efficient: Equipped with high-efficiency energy-saving motors and optimized transmission structure, the whole machine has low power consumption and high lifting efficiency, which effectively reduces long-term operation energy consumption and production cost.
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Wide Applicability & Strong Customization: It can meet the lifting demands of different tonnages, spans and working environments. It supports personalized customization of anti-explosion, anti-corrosion, wind-proof and other special functions, adapting to diversified industrial production scenarios.
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Stable Quality & Worry-Free After-Sales: Manufactured in strict accordance with national industrial standards, with rigorous quality inspection. The equipment runs stably with low failure rate, and we provide professional one-stop after-sales service including installation guidance, maintenance and technical support.
