Product Description
Top Running Single Girder Bridge Crane
A Top Running Single Girder (TRSG) bridge crane is the most common type of overhead bridge crane. It is a versatile bridge crane that can be utilized for a wide variety of industries. TRSG cranes can be built with capacities up to 32 ton and spans up to 35 meters. Typically, TRSG crane capacities vary between 5 and 10 ton. With these capacities, the bridge beam is typically I-beam. Most cranes that exceed a capacity of 10 ton with a span greater than 18 meters will utilize a box girder bridge beam.
The hoist / trolley used on a TRSG crane is always an under hung style trolley which runs on the bottom flange of the bridge beam. For this reason, a TRSG crane is not the best crane option if facility headroom is a major issue. See Top Running Double Girder cranes if headroom is a key factor.
Top Running Single Girder bridge cranes use end trucks that operate on railroad rail or square bar that is attached to the top of the runway beam. The runway for a TRSG crane can either be building supported (if building is suitable) or by using a freestanding runway system. The runway beams generally span across a full building bay. One downside to any top running bridge crane is that the hoist/trolley is not able to travel beyond the runway, limiting the hook coverage area of the hoist/trolley. See Under Hung Single and Double Girder cranes if maximum hook coverage is required.
Standard Top Running Single Girder Crane Description:
Top Running Motorized Crane
•Box bridge girder sits on top of end trucks
•End Trucks includes rubber bumpers
•Bridge Travel Speed is 2-step infinitely variable from 3 to 30 m/min with programmable acceleration and deceleration control
•C-track festoon for power and control to hoist-trolley
•Controls include IEC IP54 panel with lockable door operated power disconnect, 30 amp mainline contactor, Magnetek G+ Mini variable speed control, 150VA transformer for 115 VAC control, and phase sequence protector
•Includes an 8-button pendant suspended from hoist for power on/off, hoist up/down, trolley left/right, and crane forward/reverse (2 speed)
•(4) runway collectors mounted to adjustable height bracket
•Power 380 volts, 3 phase, 50 hertz
•A3~A7 Service Duty
•All wiring enclosed in IMC conduit
•Painted yellow with large capacity decals
• Crane fully assembled and electrically tested at HEXIN Crane fabrication facility in shandong, china
•Includes engineering drawings and electrical schematics
•Includes printed and electronic manual
Standard Options:
Dual Speed Hoist & Trolley
Hoist lift speed variable frequency drive.
Trolley speed variable frequency drive.
Radio Controls
Radio System includes one 120 VAC receiver with two transmitters with six 2-speed pushbuttons (3 motion, 2 speed with E-Stop, On/Off and Start). Combo kit for one transmitter includes a rubber boot, padded case and retractable belt clip included.
Walk Away Pendant
Rigid track festoon for independent festooned pendant.
Cope Bridge
Cope bridge girder at end truck connection for improved crane headroom.
End of Travel Trolley Limit Switches
(2) limit switches will be mounted to the hoist trolley for slow down & stop for end stop approach on hoist trolley travel. Signal lights will be installed on the motorized bridge crane to indicate when the slow down & stop system is activated.
End of Runway Crane Slow Down and Stop
(2) photo sensors will be mounted to the bridge crane for slow down & stop for end of runway approach on bridge travel. Signal lights will be installed on the motorized bridge crane to indicate when the slow down & stop system is activated.
Crane to Crane Anti-Collision
Collision Avoidance System will be added to the motorized crane to detect obstructions or opposing cranes sharing the same runway. The sensor will only allow the motorized crane to approach the obstruction at a reduced speed when approximately 4.5m and will stop the motorized crane travel if within approximately 0.9m of the obstruction. The approach distance can be easily programmed in the field. Signal lights will be installed on the motorized crane control panel to indicate when the collision avoidance system is activated. Includes a bracket and reflector to be field mounted to the obstruction or opposing crane.
Customization Available Upon Requests, including:
-Spans up to 42.7m
-Capacities up to 50 Ton
-Alternative brands of Electric or Pneumatic Chain Hoist
-Wire Rope Hoist
-Box Girder & Truss Cranes
-Process Cranes
-Hot Metal Cranes
-Automatic Controls & PLC Programming
-A, B, Both Hoist & Crane Configurations
-Twin Hook Hoists
-Food Grade
-Explosion Proof
-Outdoor & Corrosive Enviroments
Product Parameters
| Product Parameters |
| |
|
|
|
|
|
Classification
(ISO) |
A3 |
A4 |
A5 |
A6 |
A7 |
| (Please contact us if you need FEM, ASME or other standards.) |
Lifting Capacity
(Single Hoist) |
T |
1.0 |
1.6 |
2.0 |
2.5 |
3.2 |
4 |
5 |
6.3 |
8 |
10 |
12.5 |
16 |
20 |
25 |
32 |
| (Please consult us if using double hoist) |
| Span |
m |
7.5 |
8 |
10.5 |
11 |
13.5 |
14 |
16.5 |
| 17 |
19.5 |
22.5 |
25.5 |
28.5 |
31.5 |
-- |
| Height of Lifting |
m |
3.2 |
4 |
5 |
6.3 |
8 |
10 |
| 12.5 |
16 |
20 |
25 |
32 |
40 |
| 50 |
63 |
80 |
100 |
-- |
-- |
| Lifting Speed |
m/min |
0.32 |
0.5 |
0.8 |
1 |
1.25 |
1.6 |
| 2 |
2.5 |
3.2 |
4 |
5 |
6.3 |
| 8 |
10 |
12.5 |
16 |
20 |
25 |
| 32 |
40 |
-- |
-- |
-- |
-- |
| The recommended slow speed is 1/2 to 1/10 of normal operating speed. Speed adjustment solutions can be discussed and resolved with us. |
| Travel Speed |
m/min |
3.2 |
4 |
5 |
6.3 |
8 |
10 |
| 12.5 |
16 |
20 |
25 |
32 |
40 |
| 50 |
63 |
80 |
-- |
-- |
-- |
| The running speeds of cranes and trolleys should preferably follow the values specified in the table. The slow speed is recommended to be 1/2 to 1/10 of the normal operating speed. Speed control options can be discussed and resolved with us. When ground operation is used, the running speed of the crane should not exceed 50 m/min. |
| Usage Requirements |
The power supply for the crane shall be single-phase or three-phase AC, with a rated frequency of 50 Hz or 60 Hz and a rated voltage of 220 V to 660 V. |
| Environmental Requirements |
The crane generally operates indoors, with an operating ambient temperature range of -20°C to 40°C, and relative humidity not exceeding 85% (at an ambient temperature of 25°C). |
Product Structure
Understanding the Structure of a Single Girder Bridge Crane
The structure of a single girder bridge crane is a compact yet robust system, designed for efficient handling of lighter to medium-duty loads. By understanding its core components-such as the main girder, bridge, hoist, and end trucks-operators can optimize crane performance, reduce wear and tear, and ensure smooth operations. A clear understanding of the crane's structure empowers users to operate safely, minimize downtime, and maximize productivity and longevity.
Bridge
A load-bearing beam that runs the width of the building. This is the primary structural component that connects the runways and moves the hoist forward and backward using a trolley.
A bridge can be comprised of one or two beams-more often referred to as a single girder or double girder design. Girders can be made of rolled steel or can be fabricated by welding the beams into a steel box design.
Trolley and Hoisting Mechanism
The trolley is a mobile platform that runs along the length of the main beams. It houses the hoisting mechanism, which is responsible for lifting and lowering loads. The hoisting mechanism includes a system of ropes, pulleys, and a motor-driven hoist drum that enables the lifting operation.
Hoist Drum and Ropes: The hoist drum winds and unwinds the steel ropes that are attached to the bulk, controlling the vertical movement of the lifted load. High-tensile ropes are used to ensure the safety and durability of the hoisting system.
Trolley Motor: The trolley is powered by motors that allow it to move horizontally along the crane's main beams, positioning the hoist directly above the load being lifted or placed.
End Truck
Located at each end of the crane, the end trucks enable the gantry crane to travel along the rails using a set of wheels that run smoothly on the tracks.
Depending on the crane's capacity, each end truck can be equipped with 2, 4, or 8 wheels, ensuring optimal stability and performance.
Hook
Our cranes are equipped with a variety of lifting tools designed for diverse applications.
The hook is ideal for general lifting tasks, providing a reliable connection for lifting and moving loads safely.
The grab bucket is perfect for handling bulk materials, allowing for efficient and secure lifting of loose or granular items.
Additionally, we offer a range of other specialized lifting tools tailored to meet specific operational needs, ensuring maximum efficiency and safety for your lifting operations.
Controls
Control boxs are typically mounted on the crane or hoist and the pendant or remote console allows the operator to run the crane. The controls operate the drive and hoist motors, and can control Variable Frequency Drives (VFDs) to control hoist speed for precise load positioning.
Power Supply System
Insulated conductor bars, festoon systems (flat cables), or cable reels bring power to the crane.
Safety Devices: To ensure the seamless operation of the crane and to prevent potential personal injuries or mechanical failures, our safety apparatus
goes beyond basic electric protective devices or alarm bells. It includes a comprehensive range of essential equipment, as detailed below:
1. Overload Limit Switch
2. Rubber Buffers
3. Electric Protective Devices
4. Emergency Stop System
5. Voltage Lower Protection Function
6. Current Overload Protection System
7. Rail Anchoring
8. Lifting Height Limit Device
Of course, we also offer a customized service.To provide you with the most accurate and tailored design solution, please share the following details:
1.Lifting Capacity:
Please specify the maximum weight your crane needs to lift. This critical information enables us to design a system that can handle your loads safely and efficiently.
2.Span Length (Rail Center to Rail Center):
Provide the distance between the centers of the rails. This measurement directly impacts the overall structure and stability of the crane we'll design for you.
3.Lifting Height (Hook Center to Ground):
Indicate how high the hook needs to reach from the ground level. This helps determine the appropriate mast or girder height for your lifting operations.
4. Rail Installation:
Have you already installed the rails?If not, would you like us to supply them?Additionally, please specify the required rail length. This information helps us plan the complete setup for your crane system.
5. Power Supply:
Specify the voltage of your power source.Different voltage requirements affect the electrical components and wiring design of the crane.
6. Working Conditions:
Describe the types of materials you'll be lifting and the ambient temperature. These factors influence the choice of materials, coatings, and mechanical properties for the crane to ensure its durability and optimal performance.
7. Workshop Drawing/Photo:
If possible, sharing a drawing or photo of your workshop would be highly beneficial. This visual information helps our team better understand your space, layout, and any potential obstacles, allowing us to tailor the crane design more precisely to your site.
Company Profile
Founded in 2007, our company's entrepreneurial journey began in the lifting machinery industry. As the business expanded, we established a modern manufacturing facility to meet growing demand. In 2024, we launched the brand Hexin Crane and set up our office in Shanghai. Our mission remains clear: Helping to Lift World.
At Hexin Crane, we specialize in the design and production of both standardized and customized lifting machinery. With extensive expertise, particularly in overhead cranes and gantry cranes, we provide tailored solutions to meet the specific needs and operational requirements of our clients. No material or design challenge is too complex for us-our team is committed to delivering innovative solutions that ensure maximum efficiency and safety.
Our products are exported to over 20 countries worldwide, serving a diverse range of customers, including end-user factories, distributors, and industry peers. In addition to complete crane systems, we supply crane components and OEM services to clients abroad.
With a strong international presence, it's likely we already offer our products and services in your region. Feel free to reach out-we look forward to helping you with your lifting needs.
Certifications
Exhibitions
Our quality and reputation attracts many customers
Packaging & Shipping
FAQ
Q1: Are you a manufacturer or a trading company?
We are an integrated production and trading enterprise, with our own independent R&D team, manufacturing facility, and professional marketing department. This integrated structure allows us to offer comprehensive solutions and maintain a competitive edge in the market.
Q2: Are customization options available?
Absolutely. We understand that each customer's needs are unique. That's why we offer full customization on all our products to suit your specific operational requirements. To ensure we provide the best solution, we encourage you to provide detailed information about your needs. Our expert team will then design the most optimal solution, tailored to meet your exact specifications, while minimizing costs and maximizing efficiency.
Q3: How long is your warranty coverage?
We offer a 2-year warranty on the crane itself and an 18-month warranty on electric components. Should any issues arise, our dedicated after-sales team and professional engineers will promptly assist in troubleshooting and resolving the issue. Support is available via email or video conference for efficient diagnosis. If the issue is found to be related to quality, we will swiftly send any necessary replacement parts via air freight to minimize downtime and ensure a quick resolution.
Q4: Do you provide overseas installation services by engineers?
While we typically provide a detailed instruction manual for self-installation, we also offer the option of overseas installation services in specific cases. Our products are carefully packaged and designed for easy installation, which helps reduce costs and streamline the setup process. If necessary, we can arrange for our engineers to assist with installation at your location.
Q5: What other types of products do you offer?
We offer a broad range of lifting solutions, including but not limited to overhead bridge cranes, gantry cranes, jib cranes, monorail cranes, workstation cranes, and various other construction lifting machinery. Our sales specialists are always available to help you choose the most suitable equipment for your specific needs.
Q6: If we have an urgent need, can you arrange prompt delivery?
Yes, we understand the urgency of your requirements. Once your order parameters are confirmed, we prioritize urgent orders and work diligently to expedite the production and shipping process. Our efficient production systems and logistics network ensure that you receive your products quickly and reliably, without compromising on quality.
Q7: I have limited headroom in my workshops.
Is it possible to install a crane in that space? Definitely. We offer specialized crane solutions designed for workshops with low headroom. Our experienced engineers will work with you to create a customized design that fits your space perfectly, ensuring both optimal performance and space efficiency.
Q8: Do you supply lifting and rigging tools?
Yes, we provide a full range of lifting and rigging tools, including hooks, electromagnetic devices, grab buckets, and more. Please consult with our sales team to discuss the specific tools and accessories that best suit your needs.
Q9: Do you accept OEM/ODM business?
Certainly. We have extensive experience in OEM/ODM manufacturing and have collaborated with leading crane brands and customers worldwide. Whether you need customized products or full OEM solutions, we are equipped to meet your specifications.
Q10. What payment methods do you accept?
We accept T/T, bank transfers, L/C, PayPal, and other major payment platforms.
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