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Lift
Lift or LIFT may refer to: Physical devices * Elevator, or lift, a device used for raising and lowering people or goods ** Paternoster lift, a type of lift using a continuous chain of cars which do not stop ** Patient lift, or Hoyer lift, mobile lift, ceiling lift, a lift to assist a caregiver for a disabled patient ** Rack lift, a type of elevator ** Ski lift, an aerial or surface lift for uphill transport ** Space elevator, a hypothetical structure for transporting material from a planet's surface into outer space ** Wheelchair lift or platform lift, a powered device to assist a person in a wheelchair * Forklift, a powered industrial truck used to lift and move materials short distances * Scissor lift, a type of aerial work platform * Body lift, an adaptation (of fixed height) to lift the automobile body from the frame * Suspension lift, a modification raising the suspension of the automobile * Stairlift, a mechanical device to help people with disabilities get up stairs ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Forklift
A forklift (also called lift truck, jitney, hi-lo, fork truck, fork hoist, and forklift truck) is a powered industrial truck used to lift and move materials over short distances. The forklift was developed in the early 20th century by various companies, including Clark, which made transmissions, and Yale & Towne Manufacturing, which made hoists. Since World War II, the use and development of the forklift truck have greatly expanded worldwide. Forklifts have become an indispensable piece of equipment in manufacturing and warehousing. In 2013, the top 20 manufacturers worldwide posted sales of $30.4 billion, with 944,405 machines sold. History The middle nineteenth century through the early 20th century saw the developments that led to today's modern forklifts. The forerunners of the modern forklift were manually-powered hoists that were used to lift loads. In 1906, the Pennsylvania Railroad introduced battery-powered platform trucks for moving luggage at their Altoona, Penn ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lift (force)
A fluid flowing around an object exerts a force on it. Lift is the component of this force that is perpendicular to the oncoming flow direction. It contrasts with the drag force, which is the component of the force parallel to the flow direction. Lift conventionally acts in an upward direction in order to counter the force of gravity, but it can act in any direction at right angles to the flow. If the surrounding fluid is air, the force is called an aerodynamic force. In water or any other liquid, it is called a hydrodynamic force. Dynamic lift is distinguished from other kinds of lift in fluids. Aerostatic lift or buoyancy, in which an internal fluid is lighter than the surrounding fluid, does not require movement and is used by balloons, blimps, dirigibles, boats, and submarines. Planing lift, in which only the lower portion of the body is immersed in a liquid flow, is used by motorboats, surfboards, windsurfers, sailboats, and water-skis. Overview A fluid flowing aro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Deadlift
The deadlift is a weight training exercise in which a loaded barbell or bar is lifted off the ground to the level of the hips, torso perpendicular to the floor, before being placed back on the ground. It is one of the three powerlifting exercises, along with the squat and bench press. Two styles of deadlift are commonly used in competition settings: the sumo deadlift and the standard deadlift. While both of these styles are permitted under the rules of powerlifting competition, only the conventional stance is used in strongman deadlifting contests. Performing Form The conventional deadlift can be broken down into three parts: the setup, the initial pull or drive, and the lockout. Setup: When performing a deadlift, a lifter sets in a position that eccentrically loads the gluteus maximus, gluteus minimus, biceps femoris, semitendinosus and semimembranosus while the muscles of the lumbar contract isometrically in an effort to stabilize the spine. * Set behind the bar w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stairlift
A stair lift is a mechanical device for lifting people, typically those with disabilities, up and down stairs. For sufficiently wide stairs, a rail is mounted to the treads of the stairs. A chair or lifting platform is attached to the rail. A person gets onto the chair or platform and is lifted up or down the stairs by the chair which moves along the rail. Stair lifts are known variously as stairlifts, stair-lifts, chair lifts, stair gliders and by other names. This type of chair lift should not be confused with the chairlift used by skiers. The term stair climber can refer either to stair lifts, or more commonly to the exercise equipment by the same name. Some of the first stair lifts to be produced commercially were advertised and sold in the U.S. in the 1930s by the Inclinator Company of America. Many users at the time were victims of polio. Now they are seen for use in elderly, fall-prone individuals, and disabled people who are unable to navigate stairs safely. History In ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Figure Skating Lifts
Figure skating lifts are required elements in two disciplines of figure skating, pair skating and ice dance. There are five groups of lifts in pair skating, categorized in order of increasing level of difficulty. Judges look for the following when evaluating pair lifts: speed of entry and exit; control of the woman's free leg when she is exiting out of the lift, with the goal of keeping the leg high and sweeping; the position of the woman in the air; the man's footwork; quick and easy changes of position; and the maintenance of flow throughout the lift. Twist lifts are "the most thrilling and exciting component in pair skating". They can also be the most difficult movement to perform correctly. They require more strength and coordination than many other pair elements, and are usually the first or second element in a program. According to the International Skating Union (ISU), "the Woman must be caught in the air at the waist by the Man prior to landing and be assisted to a smooth l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Elevator
An elevator or lift is a cable-assisted, hydraulic cylinder-assisted, or roller-track assisted machine that vertically transports people or freight between floors, levels, or decks of a building, vessel, or other structure. They are typically powered by electric motors that drive traction cables and counterweight systems such as a hoist, although some pump hydraulic fluid to raise a cylindrical piston like a jack. In agriculture and manufacturing, an elevator is any type of conveyor device used to lift materials in a continuous stream into bins or silos. Several types exist, such as the chain and bucket elevator, grain auger screw conveyor using the principle of Archimedes' screw, or the chain and paddles or forks of hay elevators. Languages other than English, such as Japanese, may refer to elevators by loanwords based on either ''elevator'' or ''lift''. Due to wheelchair access laws, elevators are often a legal requirement in new multistory buildings, especi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Snatch (weightlifting)
The snatch is the first of two lifts contested in the sport of weightlifting (also known as Olympic weightlifting) followed by the clean and jerk. The objective of the snatch is to lift the barbell from the ground to overhead in one continuous motion. There are four main styles of snatch used: snatch (or full snatch), split snatch, power snatch, and muscle snatch. The full lift is the most common style used in competition, while power snatches and muscle snatches are mostly used for training purposes, and split snatches are rarely used. Any of these lifts can be performed from the floor, from the hang position, or from blocks. In competition, only lifts from the floor are allowed. In the snatch, the lifter lifts the bar as high as possible and pulls themselves under it in a squat position, receiving the bar overhead with the arms straight, decreasing the necessary height of the bar, therefore increasing the amount of weight that the lifter may successfully lift. The lifter final ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wheelchair Lift
A wheelchair lift, also known as a platform lift, or vertical platform lift, is a fully powered device designed to raise a wheelchair and its occupant in order to overcome a step or similar vertical barrier. Wheelchair lifts can be installed in homes or businesses and are often added to both private and public vehicles in order to meet accessibility requirements laid out by disability acts. These mobility devices are often installed in homes as an alternative to a stair lift, which only transport a passenger and not his/her wheelchair or mobility scooter. Regulations In the United States, the Americans with Disabilities Act of 1990 (ADA) required that all new mass transit vehicles placed into service after July 1, 1993, be accessible to persons in wheelchairs,"Getting on board" (July–August 1993). ''Trolleybus Magazine'' No. 190, pp. 86–87. National Trolleybus Association (UK). . and until the 2000s, this requirement was most commonly met by the inclusion of a whee ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Squat (exercise)
A squat is a strength exercise in which the trainee lowers their hips from a standing position and then stands back up. During the descent and knee joints flex while the ankle joint dorsiflexes; conversely the hip and knee joints extend and the ankle joint plantarflexes when standing up. Squats also help your hip muscles Squats are considered a vital exercise for increasing the strength and size of the lower body muscles as well as developing core strength. The primary agonist muscles used during the squat are the quadriceps femoris, the adductor magnus, and the gluteus maximus. The squat also isometrically uses the erector spinae and the abdominal muscles, among others. The squat is one of the three lifts in the strength sport of powerlifting, together with the deadlift and the bench press. It is also considered a staple exercise in many popular recreational exercise programs. Form The squat begins from a standing position. Weight is often added and is typicall ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bench Press
The bench press, or chest press, is a weight training exercise in which the trainee presses a weight upwards while lying on a weight training bench. Although the bench press is a full-body exercise, the muscles primarily used are the pectoralis major, the anterior deltoids, and the triceps, among other stabilizing muscles. A barbell is generally used to hold the weight, but a pair of dumbbells can also be used. The barbell bench press is one of three lifts in the sport of powerlifting alongside the deadlift and squat, and is the only lift in the sport of Paralympic powerlifting. The bench press is an upper body mass-building exercise that stresses some of the body’s largest muscles, including chest, triceps, shoulders, front deltoids, and even upper back. It is also used extensively in weight training, bodybuilding, and other types of training to develop the chest muscles. Bench press strength is important in combat sports as it tightly correlates to punching power. Benc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paternoster Lift
A paternoster (, , or ) or paternoster lift is a passenger elevator which consists of a chain of open compartments (each usually designed for two people) that move slowly in a loop up and down inside a building without stopping. Passengers can step on or off at any floor they like. The same technique is also used for filing cabinets to store large amounts of (paper) documents or for small spare parts. The much smaller belt manlift, which consists of an endless belt with steps and rungs but no compartments, is also sometimes called a paternoster. The name ''paternoster'' ("Our Father", the first two words of the Lord's Prayer in Latin) was originally applied to the device because the elevator is in the form of a loop and is thus similar to rosary beads used as an aid in reciting prayers. The construction of new paternosters was stopped in the mid-1970s out of concern for safety, but public sentiment has kept many of the remaining examples open. By far, most remaining paterno ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scissor Lift
An aerial work platform (AWP), also known as an aerial device, elevating work platform (EWP), cherry picker, bucket truck or mobile elevating work platform (MEWP) is a mechanical device used to provide temporary access for people or equipment to inaccessible areas, usually at height. There are distinct types of mechanized access platforms and the individual types may also be known as a "cherry picker", "boom lift" or "scissor lift". They are generally used for temporary, flexible access purposes such as maintenance and construction work or by firefighters for emergency access, which distinguishes them from permanent access equipment such as elevators. They are designed to lift limited weights — usually less than a ton, although some have a higher safe working load (SWL) — distinguishing them from most types of cranes. They are usually capable of being set up and operated by a single person. Regardless of the task they are used for, aerial work platforms may provi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
