Gantry crane
Semi Gantry Crane (Single & Double Girder)
Product Overview
The Semi-Gantry Crane (BMH Single Girder / BMG Double Girder) is a versatile hybrid lifting solution where one side of the crane travels on an elevated workshop runway beam while the other side travels on ground-level rails. By utilizing existing building structural columns, it cuts installation costs by half and frees up shop floor space, making it ideal for facilities looking to expand localized lifting capabilities without obstructing upper-level overhead cranes.
Key Features & Advantages
- Space & Structural Cost Savings: Replaces half the supporting legs with existing plant building columns, reducing steel structure costs and maximizing usable workshop area.
- Multi-Tier Crane Coordination: Operates seamlessly underneath upper overhead bridge cranes in the same bay, eliminating lifting bottlenecks during peak production.
- Compact Floor Impact: Low ground rail profile ensures unimpeded passage for forklifts, automated guided vehicles (AGVs), and industrial trucks.
- Flexible Hoist & Trolley Integration: Can be equipped with electric chain hoists, low-headroom wire rope hoists, or open winch trolleys depending on capacity needs.
- Smooth & Low-Noise Motion: Hardened reduction gearboxes and variable frequency drive motors ensure soft starting, smooth acceleration, and low noise levels.
Technical Specifications
| Technical Parameter | Specification Range |
|---|---|
| Model | BMH (Single Girder) / BMG (Double Girder) |
| Lifting Capacity | 2 Tons – 32 Tons |
| Span (S) | 5 m – 30 m |
| Lifting Height (H) | 6 m – 18 m |
| Working Duty / Class | ISO A3 – A5 / FEM 1Am – 2m |
| Hoisting Speed | 0.8 / 5.0 – 8.0 m/min (or VFD stepless control) |
| Crane Travel Speed | 10 – 30 m/min |
| Upper Runway Rail | P24 / P38 / QU70 Crane Rail |
| Ground Rail Type | Embedded Ground Rail / Flush Floor Track |
| Control Method | Ground Pendant Control / Wireless Industrial Remote |
Safety Protection System
- Ground Obstacle Detection: Safety bumper guards and photoelectric proximity sensors on the lower ground bogie.
- Travel Limit Protection: Upper and lower runway stroke limit switches with automatic deceleration buffers.
- Overload Prevention: Heavy-duty electronic load limiter with instant motor power cutoff.
- Emergency Stop Mechanism: Quick-response emergency stop buttons accessible on both remote and pendant units.
- Motor Protection: Thermal overload and phase loss protection relays for all drive motors.
Applications & Working Environments
- Machining, CNC lathe lines, and mold manufacturing side bays
- Outdoor loading platforms built directly adjacent to factory walls
- Localized assembly workstations located beneath full-span overhead bridge cranes
- Heavy maintenance workshops and warehouse perimeter loading bays
Get a Custom Quote
Need to optimize lifting efficiency in your workshop? Provide your wall-bracket height, span width, and lifting capacity to receive a custom semi-gantry crane layout proposal today.
FAQ
1. What’s the information should I provide when inquiry?
More details or drawings, better. A: Lift capacity B: Crane arm length C: lift height: hook travel distance D: What material to lift E: power source or other specials you give us will be more appreciated.
2. How many operating methods for my selection?
Standard operating methods: A: pendent controller with push buttons .B: remote control with push buttons. Choose any type as you like.
3. Can this type work in hazardous environment?
Sure! We can customize for you, acid proof or explosion proof, no problem for that.
4. What about warranty time ?
12 months.
5. How can we install the crane? Our senior engineer can be your side to do the installation guide service and training.
6. May I visit your factory?
Of course. We can pick you up at train station, high-speed rail station or airport, and book hotel for you.