A jib crane is a versatile machine that consists of several key components, each playing a crucial role in its operation.
The base of the crane is typically mounted on a concrete foundation or a steel base plate, which provides stability and support to the entire structure.
The column of a jib crane is usually a vertical or slightly inclined steel structure that supports the hoist and trolley.
The hoist is responsible for lifting and lowering the load, and it's typically a wire rope or chain mechanism.
Crane Components
A jib crane's design is relatively straightforward, but it's the individual components that make it work. The horizontal beam, or reach/boom, is where the trolley travels back and forth on.
The mast or pillar supports the boom, and can be freestanding or mounted on a wall or column. On freestanding and mast type jib cranes, you can achieve 360° of boom rotation, while wall and column-mounted jib cranes offer 180-200° of rotation. Rotation assistance can be provided through electrification or pneumatic power, allowing for continuous 360° boom rotation.
Discover more: Jib Crane Wall Mounted
The trolley carries the hoist, wire rope or chain, and the hook along the entire length of the boom. It can be manual, motorized, or pneumatic, and is controlled by a push button controller. The hoist is used to lift, position, and lower a load, and can be powered by electric collector rings or pneumatic air lines.
Here are some common components found in jib cranes:
- Reach/Boom – the horizontal beam that the trolley travels back and forth on.
- Mast/Pillar – the vertical beam used to support the boom.
- Trolley – the motion of the trolley can be manual, motorized, or pneumatic.
- Hoist – used to lift, position, and lower a load.
- Rotation – on freestanding and mast type jib cranes, you can achieve 360° of boom rotation.
Base
A jib crane's base is a crucial component, and I'm happy to share some key facts with you. Floor-mounted jib cranes are quite common, which makes installation a fairly easy process.
Most industrial facilities can support floor-mounted jib cranes without repouring concrete, which is a big advantage. This also means that these types of jib cranes are removable and repositionable as your processes change.
Here are some benefits of floor-mounted jib cranes:
- Easy installation process
- Removable and repositionable
These features make floor-mounted jib cranes a great choice for many industrial facilities.
Mast Type
Mast type jib cranes are a cost-effective alternative to freestanding systems because they don't require a special foundation.
They only need 6” of reinforced concrete to support the crane because they require additional support from an existing overhead support beam or structure. Typically, mast type jib cranes can accommodate 10-40’ spans and capacities up to 10 tons.
You can achieve 360° rotation with mast type jib cranes, and boom heights can be up to 40’ (distance from floor to overhead top support). There are two types of cantilever design options: Full Cantilever and Drop Cantilever.
Here's a brief overview of the two types:
Hook
The hook is a crucial component of a crane, connecting to the hoist and to the end effector. From our experience, the latch is often the part that needs replacing.
A hook's primary function is to support the load, and it's usually the first point of contact between the crane and the load. It's essential to ensure the hook is securely attached to the hoist and end effector.
We've found that the latch on the hook is particularly prone to wear and tear, likely due to its frequent use. This can lead to costly repairs if not addressed promptly.
A well-maintained hook is vital for safe and efficient crane operation. Regular inspections can help identify potential issues before they become major problems.
Product Features
A jib crane's design and components are crucial for its functionality and durability. Jib cranes have a basic design and construction, making them simple to operate and requiring less maintenance.
The rotation of a jib crane's boom can be achieved through various methods, including manual, motorized, or pneumatic power. This allows for 360° of boom rotation in freestanding and mast type jib cranes, and 180-200° of rotation in wall and column-mounted jib cranes.
Some jib cranes come with unique power drives that have built-in clutches, providing a smooth and controlled movement. This feature is especially useful in heavy-duty applications where precision is key.
For more insights, see: Jib Crane Design
A jib crane's mast or pillar is typically made of a sturdy material to support the boom and withstand heavy loads. The mast or pillar can be galvanized to resist corrosion for outdoor applications.
Some modern jib cranes feature a compact baseplate that allows for easier installation and reduces the overall footprint of the crane. This is particularly useful in areas with limited space.
Here are some common product features found in wall-mounted and pillar jib cranes:
- Multiple designs for jib arms based on customer requirements
- Steady slewing with robust bearing and adjustable slewing resistance
- Manual slewing available for all types
- Slewing limiter allows rotation adjustment every two degrees
- Clamp fitting lets slewing limiter be added after installation
- Motorized slewing for jibs with I-beam arms
- Standard on/off safety switch with pillar jibs (optional for wall-mounted)
- Robust festooning and easy running with reliable cable carriers
- Pillar-mounted jibs allow cables from below, side, or above
- Selection of hoists: manual, electric chain, and pneumatic lifting devices
Crane Types and Designs
Mast type jib cranes are a cost-effective alternative to freestanding systems because they don't require a special foundation. They can accommodate 10-40’ spans, capacities up to 10 tons, 360° rotation, and boom heights up to 40’.
There are two types of cantilever design options for mast type jib cranes: Full Cantilever and Drop Cantilever. Full Cantilever is used when there are no overhead obstructions, while Drop Cantilever allows for clearance for overhead obstructions located below the top of the mast.
Intriguing read: Cantilever Jib Crane
Mast type jib cranes are similar to freestanding systems and can be used for the same type of heavy-duty/high-productivity applications. However, they do require an overhead beam or support structure to provide support in addition to the foundation.
Cantilever jib cranes are used primarily in shops of industrial enterprises and in closed warehouses, with load capacities ranging from 4 Tons to 10 Tons. They eliminate the need for a 'stringer support', maximizing available headroom and useful for existing overhead cranes.
Here are some common types of jib cranes:
- Workstation Jib Crane
- I-Beam Jib Crane
- Wall Walking Jib Cranes
- Double Girder Overhead Jib Crane
- Single Girder Overhead Jib Crane
Crane Types and Designs
Jib cranes come in various types, each designed for specific applications and workspace configurations. There are several types of jib cranes, including workstation jib cranes, I-beam jib cranes, wall walking jib cranes, double girder overhead jib cranes, and single girder overhead jib cranes.
Mast type jib cranes are a cost-effective alternative to freestanding systems because they don't require a special foundation. They can accommodate spans of 10-40 feet, capacities up to 10 tons, and 360° rotation.
Cantilever jib cranes eliminate the need for a "stringer support", maximizing available headroom and are especially useful when there are existing overhead cranes. They can be used in shops and closed warehouses.
Here are some common types of jib cranes:
Automotive cranes, engine cranes, telescopic boom cranes, maintenance cranes, and industrial cranes are also types of jib cranes.
Articulating
Articulating cranes are a type of jib crane that offers exceptional maneuverability and precision in handling loads around obstacles. They have two arms that can move independently, providing excellent positioning capabilities in tight or crowded spaces.
The primary boom arm of an articulating jib crane allows for 200° swivel, while the outer arm can rotate up to 360°. This unique design enables articulating jibs to cover a greater area and provide more flexibility, especially when working near the mast or column.
Articulating jibs can be mounted in various configurations, including floor-mounted, wall-mounted, ceiling-mounted, or on a bridge or track system. This versatility allows for precise load positioning and spotting loads around obstructions.
Consider reading: Column Mounted Jib Crane
Here are some key specifications for articulating jib cranes:
- Spans up to 16’
- Capacities up to 1 ton
- 360° rotation for freestanding and ceiling-mounted systems
- 180° inner arm/360° outer arm for wall-mounted systems
For lighter to moderate-duty applications, articulating jib cranes can be an excellent choice. However, for heavier duty and more frequent lifts, a different type of crane might be more suitable due to the limited span and capacity of articulating jibs.
Sources
Featured Images: pexels.com