2016年12月21日星期三

Elevators in an Educational Environment

It's pretty common for a large university to have a more diverse group of buildings than anyplace else in town. That means, when it comes to tackling an elevator issue, the university's facilities department often doesn't have someone they can consult in a facility just down the road that's had similar experiences.
At a number of Big Ten universities, the usual solution was to call someone at another Big Ten university. A few years ago, that repeated collaboration led to the idea of a group that could share experience and education among those with elevator responsibilities at universities. That group formally organized in 2006 as Elevator U. In addition to university representatives, the group also has members that are elevator manufacturers, contractors, consultants and vendors. The organization holds an annual conference that focuses on elevators in university settings. This year's conference will be hosted by Michigan State University from June 18-21.
In addition to sharing information and ideas with peers that work in similar environments, the organization focuses on teaching safety to students, both college and younger, says Elevator U board of directors president Martin Culp, elevator supervisor, department of operations and maintenance — contracts, University of Maryland.
At Maryland and other universities, working on elevators doesn't just mean their mechanical aspects. College students can, of course, be a bit hard on their surroundings, so certain measures have to be taken to combat that, says Culp.
"It goes in spurts," says Culp. "We'll get a period when they seem to be a little more destructive than normal. What we've done in most of the dorms is put vandal-resistant buttons in the elevators, because we've had trouble with them using cigarette lighters to melt the plastic on the buttons."
When it comes to mechanical maintenance, Maryland's service contracts have a wide range of requirements for the length of time in the field and experience working with different kinds of equipment. With a wide range of brands and types of elevators serving passenger requirements ranging from dormitories to office buildings, the maintenance demands vary widely.
And, for the most part, it runs pretty smoothly — with the occasional exception.
"After a football game, we may get trapped calls where they've loaded 15 or 20 people in an elevator," Culp says. "Every once in a while we get those, but not on a frequent basis. We pretty much know when to expect problems."

2016年12月5日星期一

What's the home elevator

A home elevator is an elevator installed in a private house for use by a single family member. It can also be installed in a building used in a non single family, as a single family to enter their homes, but the public or other occupants of the building can not enter and use.


Notice for the purchase of home elevator

Once only for the rich and famous, a home elevator is now an affordable luxury to make the home barrier free and convenient. Building a new home with a residential elevator can add value to the property by making it accessible to all and by easing everyday tasks like lugging laundry and groceries between floors. Here’s some great information and, when you’re ready, we can help you find local experts with our pre-qualified network.
A private home elevator is a specialized version of a public elevator, with the same basic principle of operation. In North America, residential elevators should be built to meet certain code requirements that limit such things as the speed, size and capacity. Most home elevators require a shaft-way in which to travel. Modern designs feature automatic operation so they open, close and move down with single touch buttons.
Today’s home elevators can be finished inside to match the homeowner’s style and design tastes, including solid hardwood interiors and glass observation panels.

start loading the home elevator
A locally trained residential elevator contractor will perform a site visit to assess the space you have and the construction requirements specific to your home. The best time to involve the contractor is when you are planning a new home or a major renovation. Not all home elevators have the same requirements, so it is imperative to select the elevator you want before the hoist-way is constructed. The best companies have free planning guides on their websites to advise on hoist-way construction.

Other Operational Choices

Your elevator will be custom built and programmed to travel from floor to floor with two stops or more. Each landing will have a call station button (hall call) installed and each landing will also require a special door that locks and cannot be opened unless the elevator is at the landing. The elevator itself should also have a cab door or gate to keep occupants from falling out of the cab while the elevator is in motion. Inside, the elevator will include a cab operating panel (COP) to allow the user to stop the elevator and to operate doors.

Car interior notice

The elevator will also have hardware fixtures such as a handrail, operating panel and pot lighting in the ceiling. You will be able to select styles and finishes for these components.
A home elevator cab is built to a variety of standard sizes or may be custom-sized. A good size is 40″ x 54″ (maximum size is 15 sq. ft in North America). A home elevator can have one or two doors that exit straight through or at 90

degrees to each other depending on your home’s construction. You may also have a choice for the height of your elevator cab. A taller cab (80″) will feel more spacious.

2016年12月4日星期日

The skills of elevator maintenance

Lift Maintenance Check the operation of the elevator parts, refueling, cleaning dust, and debugging the safety device. Including non-destructive testing of elevator traction rope and lubrication maintenance.


Matters needing attention
⑴Elevator is composed of two parts: mechanical and electrical.If you do not maintain the elevator daily,elevator safety can not be guaranteed,If the elevator does not need to refuel, it will cause the mechanical parts of the elevator wear and tear, so that the elevator service life is greatly reduced, can not normally use the elevator.
Elevator in the use of the process, some of the elevator users in order to reduce costs, save money, to find a temporary job or not qualified to do the elevator maintenance , once out of the security issues and even the responsible units can not find.if the elevator manufacturer or a qualified professional maintenance company, on the one hand to ensure the maintenance of technology and quality, on the other hand, once a problem has also been responsible for.
Mechanical components
⑴The elevator traction machine lubrication oil.There are two marks on the cover of traction machine, check the oil should be in the middle of the two scale nozzle opening,If the oil is lower than the scale below, it should be said to refuel tractor, without refueling, operation will lift a long time can not get a good lubrication, which leads to burn down the elevator traction machine and motor.Elevator running a long time after the oil should be replaced in a timely manner, so that the machine always maintain good lubrication and refreshing.
⑵Cleaning and lubrication of elevator car guide boots.As everyone knows, the guide shoe running on the rail, the guide shoe above the cup, to make the elevator does not produce friction sound in the operation must be regularly to the cup and cleaning gas guide shoe, and should clean up the car's health.
⑶The maintenance of elevator landing door and car door.Elevator failure is generally more in the elevator landing door and door, so should pay attention to the hall door, the door of the car maintenance.First, the door on the ridge on the shelf of the refueling place to refuel, to maintain good lubrication, the elevator will not be in the operation of the door and open the door to make an unpleasant sound.Note the touch panel switch

line elevator safety contact plate or screen type check, because the high frequency of elevator door switch, the switch line damaged,this requires maintenance personnel in every work should be checked, the change will change in advance, do not let the user because of the door of elevator product quality doubt.



2016年11月30日星期三

Importance of elevator maintenance

A lift in the installation and put into operation, due to the installation, maintenance of the limitations of the process, the use of conditions and environmental impact, will inevitably occur in various types of failure.The most common reason is the adjustment of mechanical parts, and the design of the manufacturers to use a variety of protective functions to protect the role of.The former is related to the quality of products, installation and maintenance. In general, the mechanical strength of the mechanical parts is insufficient, the design defects and the displacement result in the displacement. The latter is relatively complex, the operation of the elevator is a complex process, must have the conditions set, starting to lift, under certain conditions, it can run continuously, meet certain conditions, to the normal speed and parking.Therefore, if the elevator is forced to meet the conditions in which it does not have the conditions (such as the cancellation of a detection function or short circuit), there may be some danger.Light will cause further damage to the equipment, causing heavy casualties and other serious accidents.Obviously, how to carry on the correct, timely and thorough maintenance to the elevator equipment is very important.
Elevator maintenance is mainly based on mechanical adjustment, through constant correction of the installation of the nominal size of the parts required to make it in the specified range of normal operation, has reached the standard parts to be scrapped in a timely manner to be replaced;At the same time the necessary cleaning, moving parts and structural parts lubrication and anti rust and to safety, prolong the service life of equipment maintenance purpose.For electrical parts, maintenance work needs to maintain its good insulation, to ensure adequate supply of power to the equipment to run.
Elevator maintenance is a comprehensive strong work, should not only include the adjustment and maintenance work not done, according to the fault characteristics and causes of the elevator, combined with the actual situation, the necessity of improving the structure and performance of the elevator.
A qualified elevator maintenance, in addition to the working principle of the elevator to fully understand, but also must have good mechanical capability (fitter, welder), a considerable understanding of the principle of electrical, electronic technology need to know and be able to use some of the basic functions.At present, it is more required to master the principles of programmable control, digital circuits, microelectronics technology and application, but also to understand the deeper understanding of the principle and application of scm.So, in the full understanding of the elevator fault situation, according to the working principle of the elevator, the elevator according to his knowledge, work flow, analyze the causes of failure and failure scope may exist, in accordance with the vision inspection steps and observed presence of failure state, gradually remove the suspected failure problem, in order to correct to determine the fault point, thorough maintenance.

2016年11月29日星期二

What's an green elevator


In the beginning there was Archimedes, who in 236 B.C.E. hooked his famous pulleys to the top of a big wooden box and began to pull. Eureka, the elevator was born. Made of locally sourced, sustainably produced materials, his person-powered off-the-grid invention is the distant ancestor of a new crop of eco-friendly elevators now courting the growing green-building market.
Some estimates project that buildings consume about 40% of the world's energy, and elevators account for between 2% and 10% of a building's energy use. The leading elevator manufacturers are rising up to get those numbers down.
What makes an elevator green? Energy consumption is key, but that's just a start. The materials, processes, and technologies that go into the manufacture of an elevator system also count. So too do the choices of interior paints, flooring, control panels, lighting, and HVAC systems. All of these elements can contribute points to a building's overall score for LEED accreditation by the U.S. Green Building Council. Here is a snapshot of how the major elevator makers are addressing these design elements.

Machine-Room-Less Technology

Introduced in the mid-1990s, machine-room-less (MRL) technology was one of the biggest advances in elevator design since they went electric a century before. Miniaturization has made it feasible to house the MRL machinery right in the elevator shaft rather than in a costly rooftop machine room. Incorporating a gearless traction design, MRL elevators in some cases can use up to 80% less energy than hydraulic lifts, without the expense and environmental headaches of oil-filled underground hydraulic cylinders.
KONE, Inc. (Moline, IL) introduced the first MRL elevator and places so much stock in the technology that the company discontinued manufacturing hydraulic elevators altogether. Its EcoSpace MRL elevator design incorporates a low-friction, gearless hoisting apparatus that prevents wear and reduces energy consumption by half compared to a geared system.

Regenerative Drives

Green elevators don't just stop with reducing energy consumption — some of them give back much of what they take. Regenerative drive systems recover energy that would normally be dissipated as heat and put it back into the building's electrical system. Not only does the technology produce power for lighting and air conditioning, it also saves money by reducing the need for machine-room cooling. Regenerative drives reduce power consumption during peak periods, contributing to a building's overall operational bottom line. Most of the major players offer this technology.

Control Features

It's a matter of physics: elevators without very many passengers aboard require more energy due to the weight differential between the elevator and its counterweight. A major goal of green elevator technology is to cut down on these light loads through precision traffic control, management of interior lighting and other energy-burning factors.
Novel computerized systems help reduce the number of light-load trips while ensuring that there are enough elevators in operation to provide fast service. Schindler's systems offer an Energy Control Option (ECO) mode that switches unused elevators into standby. If waiting times become too long, the system will activate additional cabs to meet the need. ThyssenKrupp (Memphis, TN) says its Destination Dispatch system improves handling capacity by 15-30%. The system monitors and controls the amount of current delivered to the motor, ensuring the correct level to provide to keep the motor running at full speed. As a result, the motor is protected from peak over-currents, potential overload and sudden power surges.

Outside the box

Green elevator technology isn't limited to what's in the shaft. Companies include external factors in their sustainability bona fides that contribute to a lower overall carbon footprint across the elevator's life cycle while reflecting their green corporate values. Customers considering an elevator vendor can evaluate the energy-efficiency of its manufacturing facilities, service fleet management practices, remote monitoring technologies for early diagnosis of mechanical problems, and other support systems.

Elevators will never again be as eco-neutral as it was back in Archimedes' day, but it's clear that green elevator technology is on the way up.


2016年11月27日星期日

How to maintain freight elevator

A freight elevator is used to transport bulky and large items throughout the building. The elevators have several benefits.  Mostly it is used in the industrial sector and the business buildings where bulky and heavy items are to be transported. The businesses requiring the transportation of heavy items like machinery, hospital equipment, patient beds, catering trolleys, etc. install the freight elevators for easy transport of these particular items.  These are not only used to transport the freight items but the people can also move up and down using the elevators.
Key Features of Freight Elevators
There are certain key features of freight elevators, which distinguish them from another type of elevators. Some of the key features are discussed as under.  

Slower Speed
The freight elevators have a slower speed as compared to the passenger lifts. These are used to carry bulky and heavy items from the ground floor to the upper floors of a building. The freight elevators usually carry heavy weights, and in order to safeguard the items that you carry the speed is kept slow and steady so that no items are damaged during the transporting procedure. Manual labour cannot be employed in transporting such heavy items, do it is better to use the freight elevators for this job.
Reducing damages
The freight elevators greatly reduce the damage ratio. If the heavy and bulky items are transported by the manual labour, them there are certain chances that the items will be damaged whilst the transporting procedure. These elevators are installed in the buildings to reduce the risk of loss and damage. Moreover, they save time and money.
Average Life Span
The freight elevators have an average lifespan of over 6 years, but if maintained and used properly they can be used for more than 8 years. These elevators should be technically maintained after regular intervals of time. The business owners who have installed these elevators must employ labors to check these machinery off and on.
In addition to its, repair and maintenance, durability and strength of the freight elevator also play and equivalent role in predicting the average lifespan of the elevator. If you install the elevator that is manufactured utilising durable metal from elevator manufacturers and sturdy stuff then it will last longer than expected.
Size of the Elevators  
The business owners need to predict the size of the elevators that they need to install in their business building. These elevators have different sizes, and the size that you have to install depends on upon the type of items that you have to transport.

2016年11月24日星期四

Home Elevator operation specifications

Home elevator is used in the villa in the most up and down transport, so how do we use them safely?Here we talk about the home elevator safety operation procedures:
(1)The home elevator shall be run on trial before the formal use.Check if there is any strange sound or smell,and make sure  ventilation and lighting is good.
(2)Clean the car cabin and car door and door sill chute, ensure the home elevator door opening and closing regularly.
(3)When the elevator door open, before get into the elevator, we must first observe to ensure the elevator car is in the corresponding position of floor.Rush into the elevator car may cause elevator accident fall if the elevator car is not in the level position.
(4)Home elevator is strictly prohibited overload operation, prohibit transporting over large, over long or unknown weight items.
(5)Confirm whether the landing door, car door is in the closed state. In the normal operation of the elevator, landing doors and car doors should be in a closed state. if found the elevator door is not closed while running, that the elevator is having a fault,.Do not get into the elevator,  prevent the occurrence of shear.
(6)Do not use the triangle key to open the landing door,while the elevator is on running.
(7)Emergency alarm device should be started when faults occur in the elevator operation.Elevator managers should immediately cut off the power supply for household use, timely notification to the elevator maintenance unit for processing.
(8)Operation rules for the rescue of the trapped people in the home elevator:Home elevator administrators or rescue workers should get in touch with the trapped, and make the trapped remains calm, waiting for rescue.The trapped person should not extend their body out the car .Accurately determine the car position, to ensure the reliability of the door closed;Open the car door and the landing door with the triangle key , evacuate the passengers;Close the door, fill in the rescue record and file, notify the elevator maintenance unit for processing.
(9)After the elevator door unlocked by triangle key, it is required to check whether the emergency unlocking device is reliable to reset and prevent the lock from locking.
(10)In case of a fire, it is forbidden to use the elevator to escape.Household elevator management personnel should immediately press the "fire switch", make the home elevator switched into fir-mode running . When the home elevator reached the station,it should immediately divert passengers leave the car.After the elevator managers cut off the power supply of the home elevator, use Insulated fire extinguisher to extinguish the fire.
(11)It is prohibited to take the elevator to escape during an earthquake.Should try to make the home lift stop at the nearest station as soon as possible,and evacuate passengers immediately.Then Elevator management should immediately cut off the power supply.After the earthquake stopped, should ask the elevator maintenance personnel to strictly check or repair the elevator before re put it into operation.
 12When the water intake in the elevator shaft,home elevator managers should make the elevator stop at the station above the water and immediately cut off the power supply for household elevator;If the water has already wet the car , it should immediately suspended and cut off the power no matter which floor the car stop at.

2016年11月23日星期三

Details of the elevator car cabin

⑴Classification of car
①Classification by application
Passenger car cabin, freight car cabin, residential elevator car cabin, bed elevator car cabin, car lift cabin, sightseeing elevator car cabin and sundries elevator car cabin
②by way of opening the door.
Automatic door car, manual door car, semi automatic door car.
③According to the door structure form
Middle door car, double folding or seventy percent off side door cage, hinge door car, straight door cage.
④According to the bottom structure
Fixed cage and movable cage of car.

⑵The composition and general provisions of the car
Elevator car is a metal box frame device for carrying passengers or cargo.
①Car composition
The car is generally made up of the car frame, the bottom of the car, the car wall, the top of the car, the door and the door opening machine.
The car frame is composed of the upper beam, lower beam, column and brace etc..
The upper and lower beams are fixed with a guide shoe, and the car is guided to move up and down along the guide rail, and the horizontal position of the car in the well is maintained.
②General provisions of the car
In order to ensure the function of the car to meet all kinds of requirements, the geometric size of the car has the corresponding requirements.All kinds of car in addition to the internal net height of the ladder is at least 2000mm.

Usually, the net height of the elevator is 2000mm.Passenger lift due to the top of the need for a net height of 2400mm. Residential elevator to meet the handling of the internal height of the furniture is generally 2400mm.The net height of the car door is at least 2000mm.
The car is generally the ratio of width to depth of passenger car width and depth is small, in order to increase the width of door, convenient passenger access.The bed ladder car is to meet the need of carrying bed, the depth is not less than 2500mm, the width is not less than 1600mm. Cargo compartment can be determined according to the delivery object of different width depth dimensions.
③Car baseboard
In order to prevent the car floor or floor to open the door before the end after the car is out of door sill due to shear damage toes, each car sill shall be fitted with baseboard, its width should be equal to the corresponding layer the whole width net station entrance.
④Car wall, car floor and roof structure requirements
The car wall, the car floor and the top of the car shall have sufficient mechanical strength, and shall be fully closed.
⑤Emergency alarm device
In order to make passengers can effectively to the outside car for help in time of need, should be installed in the car passengers can easily be identified and touch alarm device.
⑥Car lighting
Car should be equipped with permanent electrical lighting, so that the lighting on the control device should be not less than 50LX, car floor lighting should not be less than 50LX.
⑦Car top requirements and device on the top of the car
Car top should have a certain mechanical strength, can support two people.Maintenance operation control device, stop switch and power supply socket should be installed on the top of the car.

2016年11月22日星期二

Details of the traction machine

The elevator traction machine is the power equipment of the elevator, the elevator is also called the host.Function is the transmission and transfer of power to make the elevator running.It consists of motor, brake, clutch, gear box, traction wheel, rack and guide wheel and accessory handwheel etc..The guide wheel is generally installed on the bearing beam of the frame or the frame.Some handwheel is fixed on the motor shaft, there are usually hanging on the wall near the use, and then set on the motor shaft.

classification:
Classification by means of reduction
Gear traction machine:Driving force,The intermediate reducer transmission to the traction sheave of the traction machine,General for the 2.5m/s below the low speed lift.

Gearless traction machine:Driving force,No intermediate reducer but directly transferred to the traction sheave of the traction machine,Generally used for more than 2.5m/s of high speed elevator and super high speed elevator.
Flexible drive mechanism of traction machine.
Classification by drive motor

DC traction machine,It can be divided into DC gear traction machine and DC gearless machine.
AC traction machine,It can be divided into toothed AC traction machine, AC gearless traction machine and permanent magnet machine.

Classification by application 

double speed elevator traction machine
VVVF passanger elevator traction machine
Grocery tractor
machineroomless elevator traction machine
vehicle elevator traction machine

Classification by speed

Low speed traction machine
The speed of traction machine (fast traction machine)
High speed traction machine
Ultra high speed traction machine

Classification by structure

horizontal traction machine
vertical traction machine

Working principle
The installation consists of traction machine in the engine room of a motor and a gear box, brakes, power traction drive.The traction rope connected with a car cabin



through the traction wheel is connected at one end of the counterweight.In order to make the wells in the elevator car and counterweight respectively along the guide shaft running without rubbing, traction machine is placed on the guide wheel to separate the two.The car and counterweight to gravity traction rope pressing friction on the traction wheel groove.In this way, the rotation of the motor drives the traction wheel to rotate, drive the rope, drag the car and the Remaking of relative motion.That is, the car is rising, the weight is falling; the weight is rising, and the car is falling.So, the car is in the well track along the guide rail, under the reciprocating operation, the elevator to carry out the vertical transport task.