Semi gantry crane is a lifting equipment used for heavy fabrication applications, which combines overhead crane and gantry crane. The gantry crane consists of beam, crane running mechanism, lifting mechanism and trolley travelling mechanism, usually installed at indoor and outdoor conditions.
There are many advantages of semi gantry crane including saving your work place. If you plan to invest in a semi gantry crane, please contact us. We have single girder and double girder design in line with your business and customized cranes also can be provided for your requirements.
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Different Types Of Semi Gantry Crane
The crane has only one beam, it is relatively easy to install and maintain, widely installed indoor or outdoor to lift materials.
AQ-BMH Semi Gantry Crane Parameters
- Lifting capacity: 3-20t
- Span length: 8-30m
- Lifting height: 6-18m
- Lifting speed: 0.33-8m/min
- Trolley speed: 20m/min
- Crane travelling speed: 20m/min
- Working class: A3 、A4
- Customized service
The product has two main girder, which can lift relatively heavy loads. It has various advantages because it is designed referring to overhead crane and gantry crane.
AQ-BMG Semi Gantry Crane Parameters
- Lifting capacity: 5-32t
- Span length: 12-30m
- Lifting height: 6-12m
- Lifting speed: 6-11.5m/min
- Trolley speed:37-40.1m/min
- Crane travelling speed: 20m/min
- Working class: A3-A6
- Customized service
Semi Gantry Crane Design
As a special series of lifting equipment, there are legs on the one side of the main girder, the legs can walk on the ground track and the other side of the crane riding on a runway system. Our group provide semi gantry crane for different applications like rail yards and metallurgy factories, etc. We have professional design team, our gantry crane all meet the nation standards. Customized service also will be provided according to the demands of our clients.
If you plan to buy a semi gantry crane, these information you are supposed to provide so that we can service you better: load capacity, span of the crane, lifting height of the crane, travelling length, the number of hours the machine works per day, electric power supply and the materials the crane lift.
Applications Of Semi Gantry Cranes
Semi gantry crane is a flexible lifting equipment, mainly used for material handling in mechanical processing workshops, open yards and warehouses. It can be installed under a pre-existing large overhead crane to improve work efficiency without hindering the overhead lifting process.
Indoor And Outdoor Use
Gantry crane is widely used in the yard of metallurgy, chemical industry, nuclear power station, shipbuilding, and port, etc. If you want to invest in a gantry crane to operate outdoors, the type of paint should be considered, you had better use materials like stainless steel that can withstand corrosion and hold up to UV exposure, salt water, moisture, and extreme heat or cold. These occasions you don’t need to consider if the crane will be installed in doors.
Structure Of Semi Gantry Crane
Main Beam: The main beam is in the shape of single main beam and two main beams structure. One end of the main beam and the cross-section rectangular cross-section and the lower cross-member are bolted, and the other end and the upper cross-member are also bolted to facilitate disassembly.
End beam: Semi gantry crane only has one end beam.
Legs: The legs are welded in the form of a box structure. The force is concise and clear, and the appearance is elegant.
The Lower Beam: As an important force component of the crane, the lower beam is a structural part carrying the weight of crane and lifting load. The upper part is connected with the lower part of the supporting leg through bolts. The lower beam has stable structure and strong bearing capacity.
The lifting mechanism of a crane is used to lift the loads, generally adopting winch. It is the most important and basic mechanism in the crane, the working performance of the whole crane is directly affected by the working state of the lifting mechanism. The components of the lifting mechanism are compact and easy to maintain.
Lifting mechanism is generally composed of driving device, wire rope winding system, fetching device and safety device. The driving device comprises an electric motor, reducer, brake, drum, and coupling, etc. The wire rope winding system consists of wire rope, drum, pulley and hook. The fetching device has various forms such as hook, grab, electromagnetic chuck, etc. Safety devices include overload limiter, lifting height limiter, overspeed protection switch and safety brake, etc.
The working principle of the lifting mechanism:
- the motor rotates after energizing
- the motor rotates after energizing
- Change speed through the reducer
- Drive the drum through the coupling
- The lifting and descending process of the hook is completed through the wire winding system
The running mechanism is the power device to drive the trolley. In order to ensure the synchronicity of the driving wheel of the trolley and avoid equipment failure and safety accident caused by the track biting of the trolley, the running mechanism often adopts low-speed shaft centralized drive.
Power supply for trolley: Single pole type trolley wire is used for power supply, and the power status indicator needs to be installed.
Power supply for crane: Powered by cable. The trolley’s power supply is mounted on the conductive side.
Working power AC380V (85%-110%) 50HZ
The cranes are respectively equipped with power circuit, a control circuit, and an auxiliary circuit. Each terminal in the control cabinet is arranged at the front to facilitate maintenance. Each terminal is marked with a corresponding wire number sign, the inner wall of the conduit is smooth, and the outlet of the hard pipe and electrical equipment enter the line mouth installed rubber protection sleeve.
The electric cabinet is installed on the lower beam; the cable-controlled remote switch is not allowed to operate remotely during remote control.
Hoist cable traction device is I-beam and pulley, traction rope is stainless steel.
Description Of Main Components
- The design and manufacture of the hook comply with 10051-1988 standard.
- The hook is forged single hook, which is forged by DG20
- The hook is provided with a hook mouth latcher to prevent the lifting weight from being unhooked by accident.
- The ratio of diameter of pulley to diameter of wire rope is greater than 29 to ensure the service life of wire rope.
- We adopt the special motor produced by the experienced manufacturer in the motor industry. YZR series motors are selected for the lifting mechanism and running mechanism, which have the reasonable structure, reliable performance, excellent quality, large overload capacity and high mechanical strength.
- The insulation grade of the motor is F. the motor has good tightness, and the protection grade is IP54/IP55.
- Electrical protection system: The crane is equipment with short-circuit protection, voltage loss protection, zero position protection, over current protection,etc.
- Wire and cable: All the cranes are made of insulated wire and cable with copper core and multi-strand. Protection devices are provided in the parts with mechanical damage, chemical corrosion or oil erosion.
Installation And Inspection Of Semi Gantry Crane
The installation of the gantry crane shall be implemented according to the agreement signed by both of us. We can provide installation service, and the fee will be determined by the buyer and seller. When the buyer is responsible for the installation, we can provide installation guidance service. The fee also should be determined in advance.
No matter who is responsible for the installation, a professional commander and a safety supervisor are supposed to be on the scene in case of installation errors. The rest of the installer can decided in line with the scale of the project. The installer must have the installation certificate. In addition, a feasible installation plan must be submitted before installation.
After the installation of the crane, the equipment shall be into trial operation, rectifying and debugging the non-conformance items to meet the use requirements of the crane and relevant standards of the crane.
The initial inspection will begin when the equipment is transported to the installation place of the buyer. The staff of the buyer will verify and confirm the structure, size, components and the quantity of the products.
After the installation and debugging of the crane, the load test of the crane can be carried out in line with the requirements of the buyer. The acceptance personnel of the buyer and the seller should approve the working conditions of the crane and the size of the crane after the installation, and fill in the acceptance report.
What Are The Files And Drawings For You？
In order to help our customers operate semi gantry crane better, we provide following files and drawings with the crane.
Crane instruction, certificate of qualification (including motor, reducer, brake, wire rope, hook, drum, wheel, overload limiter, electrical components and crane,etc), steel material test report and maintenance manual of the crane.
The drawings include general drawing, the drawing of trolley assembly, crane travelling mechanism, vulnerable parts assembly( such as wheel, drum, gook, pulley,coupling and drive shaft,etc), electrical schematic diagram, wiring layout diagram and important electrical components drawing,etc.
How You Choose A Gantry Crane Manufacturer?
Our semi gantry crane and related parts are guaranteed to be new products, with the latest technical design. The steel and parts of the crane all meet the requirement of national standards in China and have passed our company’s strict inspection in accordance with enterprise standards. If you are interested in our semi gantry crane, please contact us.
In the warranty period, if you find any problems with the products, you can ask our group for reasonable disposal and compensation.
In order to meet the demands of our clients, we will provide excellent pre-sales service, on-sales service and after-sales service.
About after-sales service, we have eight overseas branches, that basically means customers around the world can get superb after-sale services. Our clients have following after-sale services:
- One year warranty
- Free training for your operation
- We will provide installation and debugging of the devices for our customers
- Any problems, we can go to help you, including checking and maintenance.
Our service concept is to make customers have appropriate selection, secure purchase and satisfactory utilization. It is the best thing for a manufacturer to solve the needs of their customers. If you are interested in our products, please contact us.
Different Kinds Of Gantry Cranes For Your Reference
We also have other hot-sale gantry cranes for your reference, including MG double girder gantry crane, MH single girder gantry crane, rubber tired gantry crane, etc.
At present, there are so many semi gantry crane manufacturers in the market. The companies producing cranes should speed up the research and development of crane production. Our company has a professional design team, so we have various cranes for sale and we also can provide a customized product for your specific lifting requirements. As a manufacturer with rich experience, we have produced gantry crane for many years, you can have confidence in the quality of our semi gantry crane.