Elevator Entrance Sill Guide (Landing Door Sill and Car Door Sill) Classification and Installation

The sill in the elevator refers to the metal horizontal component of the opening part, such as the entrance and exit to the ground. It can also be defined as the metal pedal with groove that enters and leaves the car of the elevator car or floor door. It is installed at the entrance and exit of the elevator, usually under the door plate, and ACTS as the guide device for door plate movement and the load device for entering and exiting cars and objects.

Classification: elevator floor is divided into car door sill and landing door sill

The function of sill: car door sill and landing door sill both belong to the important parts in the elevator door system. They work together with the floor slide block to ensure that the elevator car door does not shake back and forth, playing a safe role. It also serves as a guide.

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Landing door sill Installation technology

  1. Put down two floors of doors from the upper sample frame to install the standard line. For the height of the building, the guide rail can be used to fix it in the state of natural static, and the lower end is still tied with iron wire to the lower sample frame.
  2. Draw the net door center line and the net door width line on the pedal according to the center of the floor door pedal and the net door width line.
  3. Determine the length of the door pedal according to the net width of the door.
  4. Determine the standard height line of floor sill in consultation with the civil engineering unit, so that the floor sill is higher than 5-10mm after decoration.
  5. Make the mounting bracket of the door pedal, and take the two standard stitching lines of the door sill as the reference re, and fix them on the precise alignment and positive guide rail after correction.

 

Each floor entrance shall be provided with a sill with sufficient strength to withstand the load of entering the car through it. The strength of floor sill is directly related to the load of car. The higher the load of elevator, the higher the strength of floor sill should be. We rarely see the situation of fracture or maintenance due to insufficient strength of the sill. However, due to the lack of specific standard, the deformation of the sill is often unable to judge whether it is qualified or meets the use conditions. The most extreme case is that the passenger ladder is used to transport the goods by the hydraulic forklift when the cargo is transported by the cargo ladder. It is calculated at the rate of 1.1 times of the maximum load, and half of the load at the weakest initial action of the landing door sill at the entrance and exit. Check the deformation of the sill, generally permanent deformation is not more than 2mm, should be considered qualified.

How to select guide rail for your elevator correctly?

Guide rail: a device, such as a groove or ridge made of metal or other material, capable of withstanding, securing, guiding or reducing friction

It should have the following properties:

(1) Guidance accuracy — the accuracy of trajectory guidance. The main factors affecting the guidance accuracy include: geometric accuracy and contact accuracy of the guide, the structure of the guide, the stiffness and thermal deformation of the guide and its supporting parts and the oil film thickness and stiffness between static (dynamic) pressure guides.

(2) Accuracy retention — mainly determined by the wear resistance of the guide rail. The wear resistance is related to the material of the guide, the friction property of the guide pair, the pressure on the guide and its distribution law.

(3) Stiffness — mainly includes the guide’s own stiffness and contact stiffness. It mainly depends on the shape、size、connect mode and bearing condition of guide rail.

(4) Low speed motion stationary — the friction-induced self-excited vibration of guide rail during low speed movement or micro-displacement is easy to occur, that is, crawling. Crawling reduces the positioning accuracy or increases the surface roughness of the work piece

The T Type- shaped guide rail & the hollow guide rail of the guide rail type

T type guide: its main dimensions and tolerances are shown in the table below. The common guide rail listed in the table and T82/B is the industry size, which is different from the old lift t-guide standard J6 5072.1-1996.

elevator parts, guide rail, guidance accuracy of guide rail, accuracy retention of guide rail, stiffness of guide rail,

Main dimensions and tolerances of guide rail

 

Model and tolerance b h k
T75—3/B 75 62 10
T78/B 78 56 10
T82/B 82 62 16
T89/B 89 62 16
T90/B 90 75 16
T114/B 114 89 16
T125/B/BE 125 82 16

Hollow guide—it is made of steel plate through cold bending (or rolling) into a hollow t-shaped elevator to reuse the guide rail, which can reduce the weight and cost due to its empty characteristics. It satisfies the function of heavy guidance, but cannot bear the clamping force of safety pliers, so it is only used for the weight guide rail without the weight safety pliers and the elevator speed is not high.

The name of hollow guide is composed of class, group, type, feature, main parameter and deformation code.

□– deformation code: A means underside folding, underside straight edge omitted

△– Main parameter code: expressed as per unit weight of guide rail, kg/m

K– Type code: hollow section steel

T — Class group code: t-shaped elevator for reuse guide rail

 

For example, TK5A represents a 5kg/m t-shaped hollow guide with folded edges

Some knowledge of automatic sidewalk escalator you should know!

Automatic sidewalk escalator (passenger conveyor) refers to a circular running (plate or belt conveyor) aisle, used to transport passengers level or tilt Angle is not more than 12 ° fixed electric equipment. The structure is similar to the escalator, mainly consisting of moving road and handrail.

Automatic sidewalk escalator angle of 0 ~ 12 °, recommend to 15 ° before, but considering the safety requirements is only allowed to use 12 °.

The length of the automatic sidewalk can be up to 500 meters when it is horizontal or slightly sloping. Generally, the conveying speed is 0.5m/s, and the maximum is 0.75m/s.

What is the principle that escalators only start when people taken?

Automatic sidewalk escalator classification:

According to the structure, it can be divided into the automatic sidewalk with steps (similar to the plate conveyor), the automatic sidewalk with tape (similar to the belt conveyor) and the double-line automatic sidewalk. In order to achieve the purpose of common and economic use with escalator parts, steps and the same handrail structure are often used. The handrails should run synchronously with the movable pavement to keep passengers safe. Automatic sidewalk escalators, running speed, road width and transmission capacity are similar to escalator, maximum Angle is generally not more than 12 °.

  1. Sort by handrail decoration

1) All-transparent type: refers to the automatic sidewalk made of all-transparent glass for the armrest panel, which can be further divided into curved glass type and flat glass type according to the shape of glass for the armrest panel.

2) Opaque: refers to the Automatic sidewalk escalator made of opaque metal or other materials. As the armrest bracket is fixed at the upper part of the shield wall, and the armrest belt makes circular movement on the rails of the armrest bracket, the stability of the opaque type is superior to that of the all-transparent type. It is mainly used in subway, station and dock where people are concentrated.

3) Translucent type: refers to the handrail panel that is translucent, such as the handrail panel that USES translucent glass and other materials.

As far as handrail decoration is concerned, the all-transparent glass panel has certain strength, its thickness should not be less than 6mm, plus the all-transparent glass panel has better decorative effect, so the automatic sidewalk made of the all-transparent glass panel is the overwhelming majority.

  1. Automatic sidewalk is classified according to tread structure

1) Pedal type: an automatic sidewalk where passengers stand on a metal or other material with a slotted surface.

2) Adhesive tape: passenger standing tread is automatic sidewalk with rubber covered continuous steel strip.

The tape sidewalk runs in balance, but is more expensive to manufacture and use, and is suitable for long distance walking at higher speeds. The most common is the pedal – type automatic sidewalk.

Points to note when choosing an automatic sidewalk

  1. Select according to the conditions of use

For subway, station, airport and dock where people are usually concentrated, the automatic sidewalk should be public transport, while for shops and buildings, it should be ordinary. However, due to the small number of automatic sidewalks in shopping malls or general buildings in China, it is suggested to use public transportation type of automatic sidewalks for some shopping malls or buildings with relatively large passenger flow.

  1. There should be product identification

The automatic sidewalk shall indicate the manufacturer’s name, product model number and serial number, at least in a conspicuous position at an exit.

  1. Check the safety height above the steps, pedals or tape

Working Principle of OTIS Elevator Load Cell DLC-2K 35104 You Should Know

Elevator Load Cell is an import device in the field of elevator industry, but so many people do not know it. So today let ElevatorVip.com to introduce it, we will use OTIS Elevator Load Cell DLC-2K 35104 as an example in following:

Elevator Load Cell is an import device in the field of elevator industry, but so many people do not know it. So today let ElevatorVip.com to introduce it, we will use OTIS Elevator Load Cell DLC-2K 35104

OTIS Elevator Load Cell DLC-2K 35104

 

What is the elevator load cell?

The load cell (weighing sensor) is a device for weighing, but it is different from the ordinary weighing device. It is a special weighing device that converts the weight signal of an object into an electrical signal, which is shown the weight by electrical signal. The usage of load cell should consider full account of suitability of applied environment, because the poor applied environment will affect its working result.

At present, there are many kinds of load cells on the market, such as photoelectric, hydraulic, capacitive, capacitance, electromagnetic, and so on. Each type has its own characteristics and is used in different ways.

 

Working Principle of Elevator Load Cell

Three components play an important role in the use of load cell: elastomer, resistance strain gauge, detection circuit. When in the weighting, once the object is placed on the sensor, the elastomer will deform under the pressure of the object, the deformation of the elastomer causes the deformation of resistance strain gauge on its surface, and then the deformation of strain gauge leads to the change of resistance value, the increase or decrease in the resistance value is converted into an electrical signal by the detection circuit, which shows the weight of the object, and the whole weighing is done.

 

Application of Elevator Load Cell

In fact, elevator load cells are widely used in the elevator industry field, many objects that are too heavy can be weighed with a load cell. For example, the load cell can be used to measure whether the elevator car’s weight is overloaded or not, thereby to ensure the safe operation of the elevator.

 

The above content comes from ElevatorVip.com, reproduced, please indicate the source!

What is the important role of the light curtain (Car Door Detector/Sensor) in the elevator?

The elevator light curtain consists of three parts: the infrared transmitter and receiver installed on both sides of the elevator car door and the special flexible cable. It is a door system safety protection device.

The operating principle of elevator curtain is as follows:

There are several infrared transmitting tubes inside the transmitting end of the optical screen. Under the control of the micro-control unit, the transmitting receiving tube is opened successively, and the light emitted by one hair color is received successively by multiple receiving heads, forming a multipath scan. It will be formed a dense infrared protection screen through this top-down continuous scanning car door area. When any beam of light is blocked, because the circuit at the back end of the receiving head cannot realize photoelectric conversion, the light curtain is judged to be blocked, so an interrupt signal is output to the portal machine. This interrupt signal can be a switch or a high or low level signal. After receiving the signal given by the light curtain, the elevator door machine will immediately output the opening signal, and the car door will stop closing and reverse open, and the elevator door will not close normally until the passenger or barrier leaves the warning area, so as to achieve the purpose of safety protection and avoid the occurrence of the elevator sandwiching accident.

 

The above mentioned principles of the elevator screen work have several basic concepts:

First of all is the quantum efficiency of photoelectric. There are two technologies to choose from, CMOS and CCD. Anyone who has ever played with a camera knows these two terms. Generally, the camera in a mobile phone is CMOS, while the camera in a digital camera is CCD. The CCD technology is complex, so the cost is definitely higher than that in the case of the same resolution. CMOS has a feature. Under good light, the quantum efficiency of photoelectric conversion is high, but if the light is bad, the conversion rate is low, and the imaging quality is sharply reduced. So phones that use CMOS cameras lose image quality dramatically at night. Limited to the cost relationship, infrared screen receiver head is used in CMOS technology. The direct result of low efficiency of photoelectric conversion is that the screen is easy to misjudge. In order to improve the efficiency of photoelectric conversion, the common solution is to increase the transmission power. The transmitter head is easy to damage under high power condition.

 

Another concept is the number of eyes and the number of beams. Many people now judge the quality of the screen simply by the number of beams, and many tender documents simply say “require more than 150 beams”. This is actually a wrong idea. Light eyes, usually in pairs, one launch, one reception. The light curtain USES the scattering principle to realize multipath scanning. Due to the scattering property of light, the light emitted by one emitter can cover up to five receiving heads at a distance, scanning one by one. Of course, the top end and the bottom end of the hair receiving head, there will be three beams of light because of the scattering Angle of the physical reasons can’t receive. So 16 of the first 5 scans minus 3 of the top and the bottom 3 of the top is 16*5-6=7

 

What is the important role of the light curtain (Car Door Detector/Sensor) in the elevator?

What is the important role of the light curtain (Car Door Detector/Sensor) in the elevator?

As the protective device of the door system, the most important evaluation factor is reliability.

  1. The IP rate
  2. Anti-interference ability
  3. Light resistance

 

Light curtain as an electronic product, the reliability of optical screen also depends on its electromagnetic compatibility, and its strong electromagnetic tolerance (EMS) is a key index to measure its reliability. Faulty elevator doors account for a large proportion of casualties. “A protective device should automatically re-open the door when a passenger is struck or will be struck by a door leaf as he/she passes through the entrance of the car while the door is closed,” according to both international and regulatory requirements. Therefore, all the lift out of the factory will always have a door protection product – light curtain.

OTIS Elevator BS34A Braille Push Button (Titanium Black/Titanium Golden) Be Sold To United Arab Emirates

In elevator industry, the push buttons are generally divided into floor numbers button, door open/close button, door hold button, alarm button

Floor Numbers Button: As the name implies, it is used to select the destination floor. When the passenger enters the elevator car, the floor should be selected by pressing the button of the destination floor, if the light of button is on, which proves that the floor has been registered and the floor selection is successful. The elevator car will stop in order in the same direction after door closing.

Door Open Button: At present the door of elevators are driven by the power automatically in general configuration, the door open button is used to execute the elevator door opening operation. When the passenger is inside the elevator car, the elevator door is closing automatically, but if other passenger is still moving into the car, at the moment, the door can be opened automatically if pressing the door open button. In other situation, when the door is fully closed and the elevator is not in running, pressing the door button can make the door open again automatically.

Door Close Button: The Button is used to control elevator door closing automatically. When all passengers are ready in the elevator car completely, and the elevator light curtain or safety touch sensor is not screened, the elevator door will be closed automatically after a preset time. In order to improve the efficiency, the passengers could press the door close button to close automatically ahead of time.

Alarm Button: When passengers are stuck in the elevator car, they can ask helps from the duty room or monitoring room by pressing the alarm button and get timely rescue.

Intercom Button: When passengers are stuck in the elevator car, they can communicate by telephone with the duty room or monitoring room by pressing the alarm button. Just one time pressing, after the other member is connected to the interphone device, the two members can have a long conversation. If the conversation is interrupted, you can press this button again to continue to request a call.

Door Hold Button: Some freight elevators are also equipped with a door hold button, which is generally marked with ‘delay’ or ‘Hold’ words. The elevator doors open and remain open for a while for loading and unloading after the button is pressed.

The United Arab Emirates (UAE), sometimes simply called the Emirates, is a country in Western Asia at the southeast end of the Arabian Peninsula on the Persian Gulf, bordering Oman to the east and Saudi Arabia to the south, as well as sharing maritime borders with Qatar to the west and Iran to the north. The sovereign absolute monarchy is a federation of seven emirates consisting of Abu Dhabi (which serves as the capital), Ajman, Dubai, Fujairah, Ras al-Khaimah, Sharjah and Umm al-Quwain. Each emirate is governed by a ruler; together, they jointly form the Federal Supreme Council. One of the rulers serves as the President of the United Arab Emirates. In 2013, the UAE’s population was 9.2 million, of which 1.4 million are Emirati citizens and 7.8 million are expatriates.

Our customer is from UAE requirements are the push button surface styles are black finishing & golden finishing, and background light is white, yellow, or blue.

Video of Real BS34A Push Button

 

Pictures of Real BS34A Push Button

OTIS BS34A Braille Push Button with Titanium Black / Titanium Golden (Front Side), OTIS BS34A Push Button Manufacturer

OTIS BS34A Braille Push Button with Titanium Black / Titanium Golden (Front Side)

OTIS BS34A Braille Push Button with Titanium Black / Titanium Golden (Back Side), OTIS BS34A Push Button Factory Price

OTIS BS34A Braille Push Button with Titanium Black / Titanium Golden (Back Side)

What’s the difference between a barrier-free elevator and a common elevator?

The current disabled elevator was renamed barrier-free. One is the word disabled, and the other is that many ordinary people sometimes have to take the elevator, such as people carrying luggage up and down the elevator. The installation of barrier-free elevator should consider first aid function, fire function and barrier-free passing function. So what’s the difference between a barrier-free elevator and an ordinary elevator?

The difference between barrier-free elevator and ordinary elevator

Barrier-free elevators are elevators that are accessible and usable for wheelchair users, visually impaired people or stretcher beds. A voice station is provided to facilitate deaf-mutes. There are buttons with Braille, which can help the person in a wheelchair can push on to. Three-side handrails are provided for the convenience of persons with disabilities to hold, and wheelchairs are not allowed to move. The rear wall half mirror is provided for the wheelchair to exit.

 Take the elevator pay attention to below four points.

  1. See if there is a “stop for maintenance” sign. When arriving at the elevator, the passenger should see if there is a “stop and repair” sign in front of the elevator.
  2. Check the safety sign. When taking elevator, want to check whether there is the safety check mark that quality technology supervises a branch to send to check first inside elevator, check whether be in effective period, both have ability to safeguard safety at the same time.
  3. Look for overloads. The overloading of the elevator can easily cause safety accidents. When the overloading of the elevator is reported to the police, the elevator should exit actively and wait for the next ride.
  4. Check whether the operation is normal. After the elevator stops, passengers should observe whether the floor of the elevator car is level with the floor when entering or leaving the elevator. If the floor is uneven, it indicates the fault of the elevator and should inform the elevator user in time.

Take the elevator do not allow to do below four points

  1. Don’t push against the elevator door. When the door is closing, don’t force your way into the elevator to stop it from closing, so as not to cause unnecessary damage.
  2. Don’t press the emergency button casually. The emergency button is set to deal with unexpected situations. When the elevator is running normally, do not press the emergency button to avoid unnecessary trouble.
  3. Do not open the door when elevator is under operation. When taking the elevator, if the door is not closed to operate, it means that the elevator has a fault and passengers outside the elevator do not enter the ride; Passengers who are already in the elevator should not jump out of the elevator during operation to avoid unnecessary injury. They should stay in the elevator and ask for help through the alarm device.
  4. Do not take the elevator in case of fire. In case of fire, passengers are not allowed to use the elevator for escape. They should choose the staircase exit for escape.

Elevator door system and overhaul methods

  1. Elevator door system and its functions

(1) The composition of elevator door system includes car door (elevator car door), floor door (hall door), door and door and other ancillary parts.

(2) Both the floor door and the car door are important safety protection facilities for the elevator

(3) Floor door. Floor door is the part that passengers first see or touch when using the elevator. According to incomplete statistics, about 70% of personal injuries and deaths occurred due to floor door quality and improper use. Therefore, the opening, closing and locking of floor door is the primary condition to ensure the safety of elevator users.

(4) The car door, floor door and its interrelation door are set at the entrance of the elevator car

So car door is called active door, layer door is called passive door.

Only when the car door and floor door are fully closed, the elevator can run.

In order to transfer the movement of the car door to the floor door, the car door is provided with a tying device (such as the door knife). The door knife can drive the floor door movement through the cooperation with the door lock.

To prevent the elevator from trapping people when closing the door, the door safety device will be installed on the car door (clip protection device).

What kind of material is suitable for what kind of tool?

Common breakdown of elevator door system:

  1. Elevator can neither close nor open.
  2. After reaching the flat floor, the elevator door will not open
  3. Press the button to close the door
  4. The elevator has received layer selection signal, and the door is closed, but it cannot be started
  5. If the door is not closed, the elevator can start by selecting floor
  6. The elevator stopped suddenly on the way
  7. Open the door without changing speed
  8. Close the door without changing speed
  9. Open and close doors slowly
  10. Doors vibrate when opened and closed

 

The elevator overhaul door is used to access to hoistway for maintenance and open a door in the convenient place. The height of door should not be less than 1.40m and width should not be less than 0.60m.

 

Overhaul and elimination methods: the door valve pulley wear serious, replace the door pulley; Deformation or loose deviation of the guide rail of the front door, correct the guide rail, adjust and tighten the guide rail; Heavy dust accumulation or debris in the chute of the floor bar, obstructing the sliding of the door, should clean the chute; Two roller and door knife are not close, clearance is large, adjust the door lock.

What are the functions of the elevator inspection switch?

The inspection switch is used to switch between the normal operation of the elevator and the inspection state. When it goes to “check and repair” the elevator does not respond to incoming and outgoing calls and cannot travel at high speed. What are the functions of the elevator inspection switch? What should be noted when the elevator is overhauled? More information is needed on matters needing attention during the operation and use of the elevator.

What are the functions of the elevator inspection switch?

What are the functions of the elevator inspection switch?

  1. Pay attention to the inspection operation

If the elevator needs to run slowly during inspection, the number of people should not be less than two. Also pay attention to safety, especially when operating on the top of the car. When the cage roof is undergoing inspection and operation, it shall close all the doors of the outer hall before running slowly. When the elevator runs at a slow speed to a certain position, if the inspection of electrical and mechanical parts is needed, the inspection personnel should first cut off the emergency switch on the top of the car or the emergency button on the car’s control panel before the operation.

  1. Pay attention to the inspection operation in unsafe condition

If the elevator is out of control but the safety clamp is not working, the personnel inside the elevator should remain calm. In case of failure, the personnel in the elevator shall use all communication facilities to inform the related personnel. If an earthquake occurs, the elevator should immediately stop operating on the nearest floor. In case of fire, the elevator should be moved to the safe floor as soon as possible, and then the personnel inside the elevator should be evacuated safely. After all the personnel are evacuated, the power of the elevator should be cut off, and the doors of each floor should be closed. If the elevator is out of control, the emergency stop button should be pressed immediately, and the personnel inside the elevator cannot open the car door to jump out in case of danger.

How to solve common issues of escalator handrails?

Escalator is a fixed electrical drive with a circular movement step used to tilt passengers upward or downward. Here are a few common issues with escalator handrails.

OTIS Escalator Handrails Supplier & Manufacturer, Handrails for Moving Walkways & Moving Sidewalks XWG265A23

Escalator Handrails Supplier & Manufacturer, Handrails for Moving Walkways & Moving Sidewalks XWG265A23

 

  • 1st, there is steel wire going through the surface or sliding layer of the handrail, which is the most dangerous case in the field failure of the handrail, because it means that the steel wire inside the handrail has probably broken.
  • 2nd, escalator handrail can be pulled out easily from guide rail; it is the phenomenon that the lip of escalator handrail greatens. There have been two reported incidents in which passengers had their fingers stuck between the lip and the guide, so they were cut off.
  • 3rd, when the handrail is lagging during escalator works. The running speed of the handrail cannot keep up with the running speed of the stairs. This can cause the upper and lower parts of the passenger’s body to run at different speeds while holding the handrail, especially for the elderly and weak passengers who are prone to falls.
  • 4th, the cracking of the extrusion line in the handrail will not lead to passenger risk in general, but the cracked part may still clip the fingers, so there is a certain risk.
  • 5th, the lip of the handrail is cracked. Because passengers hold the handrail when riding the escalator, even if the lip of the handrail is cracked, it is generally closed during this journey. And the lip mouth of handrail is cracked won’t expand the position above the extrusion line of handrail commonly, because this won’t cause the safety problem of passenger commonly.
  • 6th, the small crack on the surface of the handrail is generally caused by the aging and cracking of the handrail. The crack will not affect passengers’ safety. But if left unattended for a long time, the small cracks will expand and may cause even greater cracking, causing operational issues in the banisters.
  • 7th, The surface of the handrail is bulging just because the inner material of the handrail is delaminated, bulge generally do not cause operational and safety issues with the handrail, but it is inappropriate to ignore them.
  • 8th, the escalator handrail surface appears small bubble, because be polluted by oil commonly, There will be no impact on the operation and safety of the handrail.

 

When do replacement for handrail of escalator, please do not forget to stop the escalator, turn off the power, put up a safety warning sign and remove the tensioning connecting screw to keep body safe.