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Spreader Beam
The lifting beam (also known as traverse, spreader beam) is a steel beam that is attached to the hook of the crane in order to spread the Sling (rigging), slings from one end of an elongated load (like a wall panel) to another. The bottom of the beam has multiple connection points for hanging the load. The lifting beams are used in multiple cases: * lifting an asymmetrical load. Without a beam, it might be hard to strap the load so that its center of gravity is exactly below the hook; * handling a long load with a single-hook crane. Sufficient spread between the slings prevents the load from slipping out; * increase the headroom: slings cannot be stretched close to the horizontal direction, so attaching them directly to the hook requires a minimum distance from the hook to the load. When the lifting beam is used, the slings can be shorter, providing more vertical clearance during lifting; * if the attachments of the load are on its vertical sides, the slings have to go over the edg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sling (rigging)
Rigging is both a noun, the equipment, and verb, the action of designing and installing the equipment, in the preparation to move objects. A team of ''riggers'' design and install the lifting or rolling equipment needed to raise, roll, slide or lift objects such as heavy machinery, structural components, building materials, or large-scale fixtures with a crane, hoist or block and tackle. ''Rigging'' comes from ''rig'', to set up or prepare. Rigging is the equipment such as wire rope, turnbuckles, clevis, jacks used with cranes and other lifting equipment in material handling and structure relocation. Rigging systems commonly include shackles, master links and slings, and lifting bags in underwater lifting. In the United States thOccupational Safety and Health Administration (OSHA)regulates workplace safety including rigging in CFR 1926.251. The Health and Safety Executive is responsible for the matters in the United Kingdom. Equipment * * * * * * * * * * * * * * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wall Panel
A wall panel is single piece of material, usually flat and cut into a rectangular shape, that serves as the visible and exposed covering for a wall. Wall panels are functional as well as decorative, providing insulation and soundproofing, combined with uniformity of appearance, along with some measure of durability or ease of replaceability. While there is no set size limit for a piece of material fulfilling these functions, the maximum practical size for wall panels has been suggested to be about , to allow for transportation. Advantages Use of wall panels can reduce construction costs by providing a consistent appearance to the panelled surface without requiring the application of paint or another finishing material. Wall panels may be finished on only one side, if the other side is going to be against a brick or concrete wall, or a comparable structure. Alternately, the panels may, if assembled to an appropriate framework, substitute for having any other kind of wall at al ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Center Of Gravity
In physics, the center of mass of a distribution of mass in space (sometimes referred to as the barycenter or balance point) is the unique point at any given time where the weighted relative position of the distributed mass sums to zero. For a rigid body containing its center of mass, this is the point to which a force may be applied to cause a linear acceleration without an angular acceleration. Calculations in mechanics are often simplified when formulated with respect to the center of mass. It is a hypothetical point where the entire mass of an object may be assumed to be concentrated to visualise its motion. In other words, the center of mass is the particle equivalent of a given object for application of Newton's laws of motion. In the case of a single rigid body, the center of mass is fixed in relation to the body, and if the body has uniform density, it will be located at the centroid. The center of mass may be located outside the physical body, as is sometimes the c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hook
A hook is a tool consisting of a length of material, typically metal, that contains a portion that is curved/bent back or has a deeply grooved indentation, which serves to grab, latch or in any way attach itself onto another object. The hook's design allows traction forces to be relayed through the curved/indented portion to and from the proximal end of the hook, which is either a straight shaft (known as the hook's ''shank'') or a ring (sometimes called the hook's "''eye''") for attachment to a thread (yarn), thread, rope or chain, providing a reversible attachment between two objects. In many cases, the distal end of the hook is sharply pointed to enable penetration into the target material, providing a firmer anchorage. Some hooks, particularly fish hooks, also have a ''barb'', a backwards-pointed projection near the pointed end that functions as a secondary "mini-hook" to catch and trap surrounding material, ensuring that the hook point cannot be easily pulled back out once e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Container Spreader
A container spreader is a tool used for lifting containers and unitized cargo. The spreader is placed between the container and the lifting machine. The spreader used for containers has a locking mechanism at each corner that attaches to the four corners of the container. A spreader can be used on a container crane, a straddle carrier and with any other machinery to lift containers. Spreader operation can be manual, semiautomatic or fully automatic. See also * Spreader beam The lifting beam (also known as traverse, spreader beam) is a steel beam that is attached to the hook of the crane in order to spread the Sling (rigging), slings from one end of an elongated load (like a wall panel) to another. The bottom of the be ... References Sources * Port infrastructure {{tool-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
