Geared traction elevator pdf

The friction between the ropes and the sheave grooves, which are cut on the pulley, initiates the traction force between the traction drive and the rope. Overhead traction machines hollister whitney elevator corp. Gearless traction elevators have the wheel attached directly to the motor. The safety gears of both elevator cars are activated in the very. Geared traction freight elevator 14 20 00 page 4 2. They will be smooth and efficient and produce less sound. Schumacher elevator company manufactures, installs, and maintains traction elevators. Select one of the following 910 kg 14 kg 65 kg 1587 kg 1815 kg 2050 kg 2275 kg other kg contact delta for this option 2. Provide at least one passenger elevator for each new and renewed texas state university building of more than a single story, except as otherwise approved by the director of facilities planning, design and construction.

A counter weight makes the elevators more efficient by. Geared traction system comprises of two main segments. The greatest advantage of the gearless tractor is that it has no rotating structure, and there is no place for mechanical wear except a set of bearings on the rotor shaft of the motor which is also the traction shaft. Traction elevators use a counterweight to offset the weight of the cab and occupants. With this design, the motor doesnt have to move as much weight, making it much more energy efficient than hydraulic systems.

Elevator co ltd electric geared traction elevator s. The schindler 3100 is the smart choice for twoor threestop commercial and residential buildings. Geared lift motors, geared elevator traction machines, mr lift machines, mr elevator motors gem camel lift machine motor very functional and compact machine specially designed for the 3, 4, 6 passengers lift and speed up to 1 ms. Kone monospace does not need a separate machine room, thanks to the kone ecodisc hoisting motor, which is so compact that it can be located in the shaft. System has a brake between the motor and the reduction unit, this brake stopped the elevator motion. We replace your geared traction elevators hoist motor while cleaning and reusing your existing machine. Because the mrl elevator is a traction elevator with all its components above ground, this is not a concern for this equipment. By continuing to browse the site, you are agreeing to our use of cookies. Working speed employed in this design for geared traction elevators is between 1,7 to 2,5 meters per second. The calculation for the weight of the counterweight is the car deadweight balance, plus a percentage of the rated load often. We retain improving upon and perfecting our items and repair.

Hard work to keep making progress innovation in the. Both geared and gearless traction elevators are driven by alternating current ac or direct current dc electrical motors. Section 14210 electric traction elevators uc davis health. Traditional geared traction elevator systems consist of cables connected to the top of the cab operated by an electric motor located in a penthouse above the elevator shaft, as shown in figure 3. The gen2 family of elevators blends convenience, style and performance to deliver a new passenger experience that adds value to any residential, commercial, hospitality, medical or industrial building. Geared and gearless traction elevators with machine room. The elevator itself was invented many years ago originally as a pully machine operated by slave labour. Employ only elevator contractors who have been satisfactorily supplying and installing.

Traction elevators shall be standard available machine room less mrl. This is useful to use low kw motor and reduce cost. As the name implies, the electric motor in this design drives a wormandgeartype reduction unit, which turns the hoisting sheave. At the same time, we perform actively to do research and progress for geared traction elevator pdf, geared traction elevator, geared traction elevator pdf, our company will adhere to quality first perfection forever peopleoriented technology innovationbusiness philosophy. Moreover, these elevators are capable of traveling to a maximum distance of 250 ft. Geared traction elevator schumacher elevator company. Contractor shall provide one 1 neatly bound manual. Although one of them has distinct advantages compared to the latter, the best choice can always change according to the needs, abilities, adequateness, affordabilities and so many other variants. Geared traction elevators schumacher elevator company. Wiring and connections under part 2 of this section. Elevator machinery a modmachines package is an open system designed for the upgrade of elevator machinery. Provide a selfclosing, selflatching, fire rated machine room, control room or control space door, a minimum of 914 mm wide x 2030 mm high with a minimum of 2286 mm clear height below all equipment. All schumacher geared traction elevators meet or exceed all requirements set by the american society of mechanical engineers asme a17.

Geared traction elevators are capable of travel speeds up to 500 feet per minute. Traction elevators are the most common type of elevator and can be geared or gearless. Traction elevators are the most common type of elevator. In fact, gearless traction elevators are able to travel at speeds of up to 2,000 feet per minute which makes them the perfect.

Geared lift motors, geared elevator traction machines, mr. While their speed is slower than gearless elevators, geared elevators offer advantages in terms of energy efficiency as they use less power to turn the pulley. Traction elevators are lifted by ropes, which pass over a wheel attached to an electric motor above the elevator shaft. Traction elevators have an elevator car and counterweight attached to opposite ends of. Geared traction machine for elevator lift, elevator spare parts geared traction machines are driven by ac or dc electric motors. The wheel mentioned above is attached directly onto the motor is this design. Supply geared elevator traction machine, geared traction. About 26% of these are elevator parts, 10% are elevators. Elevator feeders, dedicated ground wire and lockable, fused disconnects wired. Gearless traction elevators are capable of speeds up to 2000 feet per minute. The traction drive is the method of converting the input mechanical power in this case the turning of a shaft into useable mechanical power in the system the vertical movement of the elevator. Geared traction elevators have fair installation and maintenance costs, and low energy consumption.

There is also a pair of counterweight rails located on either one side or the rear of the hoistway. Advantages of gearless traction machine of elevator. The elevator and all machinery are installed inside the shaft, simplifying the building interface. Imperial electric boasts the most comprehensive gearless machine line in the elevator industry. Preengineered models are available in capacities up to 5,000 lbs with both front and rear opening models and speeds up to 500 fpm. In a geared machine, the motor turns a gear train that rotates the sheave. Conduits from the closest elevator hoistway of each elevator group or single elevator to fire command room elevator control console. A wide range of capacities for both passenger and freight applications because of the motor design, the gearless application develops higher torque and runs at lower rpms giving the gearless machine. Front and rear openings of any configuration can be used. Traction elevators mostly require more space and are bulkier. So make sure to consider all these factors before choosing the right elevator between hydraulic and traction systems. The singlewrap arrangement provides traction by the use of grooves that will pinch the ropes with varying degrees of pressure depending on the shape of the groove and its undercutting. Elevator feeders, dedicated ground wire and lockable, fused disconnects wired to the. Manual and automatic door system comprises of car switch operation by an attendant or luminous operating panels.

But new traction system called machine room less lifts require much lesser space. Elevator machines are also roped with a singlewrap arrangement, which is applied to both gearless and geared machines. Geared traction elevators hospital elevators schumacher elevator. Maintenance manual for brake of geared traction machine. It offers a spacesaving application, distinct design options, integrated green technology and smooth, quiet performance. Installation expenses of this type of elevator is less than gearless traction elevators have. Geared traction elevator geared traction lift latest.

They use synchronous motors with permanent magnets. Traction elevators may be geared or gearless based on building height, speed requirements, and cost considerations. The geared traction machine is used for elevators and dumbwaiters of all capacities from 25 to 30,000 lb 10 to 14,000 kg or more, and speeds from 25 to 450 fpm 0. Region and locale and the product elevator selected when you downloade d this manual from our website. Geared traction is the most prominent combination of versatility, flexibility and performance for any high and mediumrise buildings. Geared electric traction transit elevator escalator consortium reducer attached to the motor driving the sheave that pulls the ropes capable of traveling 500 feet per minute used for midrise buildings up to 10 floors generally less expensive than gearless or mrl. Through our close partnership with trusted supplier imperial electric, we can offer a complete line of elevator duty electric motors which fully match the reliability of hollisterwhitney traction machines. The main guide rails are mounted in the hoistway at each side of the car.

Geared service elevators, as shown and detailed on the drawings and. It is a mrl traction solution that is engineered like no other lowrise elevator. Schindlerwestinghouse westinghouse motors 151b417h01 dcreversable 217b233h01 n selector 2633c74h27 375 mach 630b596h01 aa door oper. When geared traction elevators are required the machineroomless type is not acceptable. A wide variety of geared traction elevators options are available to you. Escalator geared traction machine, gearless traction. They are used for mid and highrise applications and have much higher travel speeds than hydraulic elevators. Consult your thyssenkrupp elevator representative for details.

Geared traction elevators have a gearbox that is attached to the motor, which drives the wheel that moves the ropes. Elevator s to be delta passenger elevator s or approved equal. They can be geared or gearless and both model types are driven by. Traction geared this application utilizes a hoist machine, ropes and counterweights. Schumacher geared traction elevators are available in custom sizes or various preengineered models with various capacities. Elevator product guide elevator systems, options and finishes catalog elevator technology.

Geared electric traction transit elevatorescalator consortium reducer attached to the motor driving the sheave that pulls the ropes capable of traveling 500 feet per minute used for midrise buildings up to 10 floors generally less expensive than gearless or mrl. Learn about schindlers 3300 mrl elevator for low to midrise buildings. The mrl elevator utilizes a gearless traction type machine, which results in superior performance and ride quality compared with hydraulic elevators. Geared vs gearless traction elevator is a common comparison that builders try to figure at all projects. An open system means the company is prepared to design other solutions tailormade to the customers local. In terms of maintenance and energy, a geared traction elevator is considered average compared to other designs. This section shall apply to both conventional geared machine cgm and machine. Maintenance manual for brake of geared traction machine 2 d55006a issued in march 2020.