What is the Escalator (Moving Walk) Comb Plate?

What is comb plate for escalator units?

What is the Escalator (Moving Walk) Comb Plate

The comb plate is located at both ends of the exit entrance, to facilitate passenger transition and engage with steps, pedals or automatic sidewalk tape. The ends are rounded and shaped to minimize the risk of foot clamping between steps, pedals or tape. The supporting structure shall be adjustable to ensure proper meshing and proper stiffness.

The comb plate is the safety protection device of the elevator. There is a micro switch behind the comb plate.

One side of the comb plate is supported on the front plate and the other side is used as the fixing surface of the comb tooth. Its horizontal Angle < 10 °.The structure of the comb plate shall be adjustable to ensure that the meshing depth of the carding teeth is greater than 6 mm. It can be made of aluminum alloy profiles or thick carbon steel plates.

The comb lamp is a part of an escalator and walkway that gives light from under the foot of the passenger at the exit. Usually set at the end of the skirt board at the entrance and exit. Lighting should be adequate and adequate. The lighting at the comb plate should be consistent with the lighting required in the area. The lighting at the indoor or outdoor escalator and the exit of the automatic sidewalk should be at least 50lx or 15lx respectively.

Installation of comb plate

To ensure the safety of passengers on the escalator, it must be installed at the entrance and exit of the escalator

(1) The front comb plate is an extension of the ground plane and the height cannot be different. The height difference between it and the upper surface of the step pedal should be no more than 80mm.

(2) Comb Plate. One support on the front panel, the other as a comb fixed surface, its horizontal Angle of 40 °or less, the structure of the comb plate is adjustable, in order to guaranty the pedals and comb tooth meshing depth of 6 mm with tape or alveolar knead to a depth of 4 mm or more.

(3) Comb Teeth. Tooth width of 2.5 mm, or end for rounded corners, horizontal Angle of 40 °or less.

(4) The adhesive tape of the automatic sidewalk shall have a groove that meshes with the comb teeth of the comb teeth along the running direction.

(5) The height of the belt groove should not be less than 1.5mm, the depth of the groove should not be less than 5mm, the width of the tooth should not be less than 4.5mm, and it should not be more than 8mm.

(6) The tape should be able to be continuously and automatically tension, and it is not allowed to use stretching spring as tension device.

(7) The vertical net height shall not be less than 2.3m above the escalator, the footstep of the automatic sidewalk or the tape of the automatic sidewalk.

 

Some Guide Shoe of Elevator Equipment Knowledge You Should Know

The elevator guide shoe

Guide shoe is a sliding part between elevator guide rail and car, what we call it guide shoe. It can fix the car on the guide rail and make car running up and down. Oil cup upper the guide shoe that can reduce the friction of the shoe line and guide rail. There are four sets of guide shoes installed in each unit, respectively on both sides of the upper beam and under the safety clamp seat at the bottom of the car; and also four sets counter weight guide shoes are mounted on the bottom and top of the beam.

The guide shoes fixed on the car can move up and down along the fixed guide rail installed on the wall of the well way of the building to prevent the car from deviating or swinging in operation.

Guide shoe installation requirements

The installation method of guide shoe is to put it on the installation position of the guide rail of the car frame. After finding the right position, use the bolt fix it on the car guide rail frame. The installation must meet the following requirements:

  1. When the upper and lower guide shoes are installed in the right position, they should be on the same vertical line. No slant or deflection is allowed. Both roller guide shoes and fixed guide shoes same requirement.
  2. Fixed guide shoes are mainly used for FOVF units, the clearance between the two sides should be consistent, and the clearance between the inner lining and the rail top should be within O. 5 ~ 2 mm

Guide shoe types

Elevator guide shoe consists of roll guide shoes and slide guide shoes

Roll guide shoes are 3 or 6 wheels stuck on the track and are generally used for elevators with a speed of more than 2 meters.

Features: to roll friction instead of sliding friction can reduce the friction loss and the vibration and noise of the running, so as to improve the passengers comfortable, but this guide shoe processing and installation requirements are higher.

 

Otis Elevator Spare Parts Fixed Guide Shoe XAA24161A1

Elevator Spare Parts Fixed Guide Shoe EEV24161A1

The fixed slide shoe is a slide way that is stuck to the guide rail and is usually used in an elevator with a speed of less than 2 meters

Features: died from a guide shoe head is fixed, and the structure is simple, without adjusting mechanism, as the elevator running time growth, guide shoes and guide rail fit clearance will be more and more bigger, in the operation of the capsules in shaking, can appear even shock.

Elastic slide guide shoes are also divided into spring sliding guide shoes (for elevators with rated speed less than 1.7 m/s) and rubber spring sliding guide boots (for medium-high speed elevators).

Some types of COP button in elevator car you should know

Elevator in everyday life, in order to help people to save time, is characterized by large traffic, high frequency of usage and pay attention to efficiency, using unconventional formative elevator buttons, common elevator button on the control box of the basic rules are a whole transverse longitudinal alignment layout.

Button material

Elevator buttons can be in the form of floor numbers and buttons integrated and separated, in this case, only floor Numbers and buttons integrated. The common materials of buttons are white characters of silver background, black characters of silver background, black characters of white background and white characters with black background.

Analysis on the recognition: white background black characters, black background white characters and silver background black characters, text and background can form a large contrast, easy to identify. The white letters on the silver bottom are relatively low in recognition and difficult to read when not facing. It’s all silver, and there’s a similar problem.

Some types of COP button in elevator car you should know Braille button for special people

Design 1- Braille button for special people

Now many public facilities and housing are designed for the special groups, which is a country, a city, the embodiment of the humanistic care to special groups, designed for the special groups, should be first defined as under the premise that does not affect ordinary people use can ensure that the special groups, and it’s convenient to make such as brailed buttons.

Button design for the blind, which is supposed to be the most popular design for the special population, and the form is quite colorful.

The most common way is to put Numbers and braille tags together on the same button, like S. It should also be the cheapest way to achieve this. But personally think that the problem is the border of the touch and press hard to grasp, do not understand the blind mode of operation, oneself just wants to feel there is the problem, if there is any misunderstanding at correct). Imagine a blind person touching a button area and trying to figure out how to make sure the Numbers look for patterns. Knowing the braille should be touched with some force, but avoid pushing the button. Whether it is easy to operate by mistake like this, it is easy about the blind to be in a more nervous state.

U and c are barely a type of design. The black area places the floor number and braille mark, and the button provides the operation. Such separation processing avoids the above mentioned problems. However, the comparison between the two also reveals a problem that U fail to consider the principle of intimacy. If you look at the layout of U, it is probably the work of an industrial designer who is too dedicated to “alignment”. Configuration is very uniform, but black area and button corresponding relationship, can’t be clear at a glance to see or find out, we should use “read from left to right” experience or a minimum repeat unit to the right operation. The design like c USES exterior matching to form a natural connection between the two, which is a relatively good design.

X’s design is more neutral, which ensures that blind people can recognize it, and also ensures that it does not increase the burden of recognition on ordinary people. It is also very beautiful. J and T is a person feel better design, made braille region and the entire panel the same raw material, and its corresponding floor button closely arranged, neither too much interference identification, ordinary people also convenient operation for the blind. However, T is slightly superior to J in the design of braille area. Braille is arranged on the same board for convenient extension and touch.

Some types of COP button in elevator car you should know disabled operation panel for special people

Design 2 – disabled operation panel for special people

In addition to the blind, some elevators also consider the disabled. Ordinary button near the door on the right side of the central commonly, it is still partial corner space position, for the disabled, don’t use tools, regardless of whether they are accurate to the corner of the position or the upper button operation, is very difficult. Nowadays, many public facilities are located in the center of the left and right sides of the elevator, with separate button panels for the operation of disabled people, which facilitates the travel of disabled people.

 

The COP humanized button design in the elevator car makes our trip more convenient and warm today!

 

How to manufacture escalator handrail belt and how long its service life?

  1. Production principle of escalator handrail belt:

Escalator handrail belt is through to the already have preliminary shape heating raw material, after a period of time under the high pressure heat vulcanization, make raw material molded into a stable shape of the handrail can use for a long time.

The raw material is in the shape of strip layer, which generally includes organic rubber and plastic layers such as adhesive layer, polyurethane layer, tensile steel wire layer and special adhesion layer on surface. With polyurethane organic matter such as rubber layer is a special spiral screw rubber extrusion type extrusion, while tensile steel wire layer is by cutting machine rolled the wide contain plastic wire length, cutting out by bonding, can turn the layer growth in raw strip. Escalator is common black handrail, with the development of customer demand, began to appear red, green, blue, yellow and so on different color handrail, these armrest different because of mixed with different additives. Different elasticity, different abrasion resistance, different tensile fatigue strength and environmental protection. The escalator handrail can be divided into three parts according to the position: pump station part, main engine part, and mold core linear guide rail oil motor chain drive part.

 

  1. Basic performance parameters of escalator handrail belt:

Automatic handrail with four cylinders total pressure:    100~200   T

Vulcanization time of escalator handrail is:    5~20  min

Escalator handrail belt material vulcanizing temperature :   180  ℃

The escalator armrest belt presses down at a fast speed of:   30  mm /s

The total power of the escalator handrail drive motor is:    22   KW

Escalator handrails with a large vulcanization length of:   3000  mm

The moving speed of the die core of escalator handrail is:   18300-30,000 mm /min

Size of escalator handrail equipment (length, width and height):  12100*1900*2800 mm

The total weight of escalator handrail equipment is:    18   T

 

  1. The service life of escalator handrail belt

In general, the indoor escalator handrail belt service life of 10 years or so, outdoor escalator handrail is normally only used 6 years or less time, the escalator handrail will appear wear fracture, in these cases need to do replacement timely.

ELEVATOR VIP supplies all various of escalator handrails, for more please visit here: escalator handrails

WHAT’S FUNCTION DOES THE ELEVATOR COMPENSATION CHAIN DO?

Speaking of the elevator, we are familiar with this equipment around our daily life. Elevator balance compensation chain engaged in the work of the elevator related aspects and never contact with people who work in this industry in today, today we will introduce one often use the elevator components – the elevator balance compensation chain.

Elevator is a kind of vertical lifting equipment, which has been widely used in today’s high-rise buildings. Elevator balance compensation chain is a compensation device on the elevator. Its application guarantees the safe and stable operation of the elevator.

Often found in the elevator in the elevator using run time car with abnormal sound, a main reason to lead to the phenomenon – length compensation improper selection or do not conform to the requirements, analysis, and the right to choose for chain compensation for the elevator.

Elevator chain that is the weight of the steel wire rope compensation, when the elevator on the top floor, steel wire rope on the heavy side, on the heavy side more than the weight of the steel wire rope when the elevator at the bottom side of wire rope in the car ,which side e is more than the weight of the steel wire rope with compensation chain can balance the gap between the general compensation chain is more than 30 m.

The elevator balance chain compensation chain is commonly used in the elevator. Its structure is wrapped with PVC rubber composite material, which is used to compensate the weight of steel wire rope and make the elevator run smoothly. When the elevator is on the top floor, the steel wire rope is on the opposite side of the weight. When the elevator is on the bottom floor, the steel wire rope is on the side of the car, and the weight of the wire rope is added to the side of the car. The good quality compensation chain can make the elevator run safely and smoothly and achieve quiet and comfortable effect.

Elevator balance compensation chain guide role mainly balance car and weight on both sides of the main cable, cable cars tail, the weight of the compartments tail elevator on both sides of the main cable, cable chain and compensation of equal weight variation, so choose good compensation chain. The compensation is chain can balance this section head, to compensate dynamic balance, because of wire rope has weight, along with the up and down the elevator movement, will produce dynamic imbalance, so only USES compensation chain.

In general, the elevator balance compensation chain first according to the weight of the traction rope chain minus the weight of the accompanying cable chain to determine the weight of the compensation, and then determine the weight per meter of compensation chain, from manufacturer’s compensation chain varieties selection. Professional compensation chain manufacturers generally have flexible weight distribution options. A certain error range is allowed in calculating the weight of the compensation chain per meter. There are two choices of elevator balance compensation chain within the error range, two compensation chains with lighter weight per meter can be selected, and one compensation chain with heavier weight per meter can be selected.

Lecture on elevator parts and elevator knowledge Elevator Safety Gear & Reducer

Lecture on elevator parts and elevator knowledge

Lecture on elevator parts and elevator knowledge Elevator Safety Gear & Reducer

  • Elevator Safety Gear & Reducer

Elevator safety gear is a mechanical device, which stop the car (or counter-weight) from moving. Safety pliers are required for any manned car suspended by a wire rope or chain. When there is a passageway or space under the bottom pit, a safety clamp is also required for the weight. The safety clamp is set on the beam under the cage frame and ACTS in pairs on the guide rail at the same time.

A speed limiter is a device that limits the speed of a car (counter-weight), and usually installed in the machine room or at the top of the well. The tension device is placed in the bottom pit.

Safety gear and speed limiters must be combined to work.

 

  1. Elevator Speed limiter (Reducer)

Speed limiter can be divided into swing hammer type and centrifugal type according to its action principle.

Hem hammer speed limiter is to use the CAM on the rope wheel in contact with the roller at the end of the pendulum in the process of rotating, the frequency of the pendulum swings associated with rope wheel speed, when the vibration of the pendulum frequency exceeds a predetermined value, the pendulum of the ratchet into rope wheel stop stop claws, so that the speed limiter to stop running.

The speed limiter of centrifugal structure can be divided into vertical axis rotating type and horizontal axis rotating type. It is characterized by simple structure, high controllable ability and small space required for installation.

When designing or selecting, the following problems should be noted:

1). Speed limiter operating speed

2). Pretension force of speed limiter rope

3). Adhesion of the speed limiter rope to the rope wheel or the tension force of the speed limiter during operation

4). The response time of the limiter action should be as short as possible.

 

  1. Instantaneous safety gear

It features a short braking distance and a strong impact on the car.

Divided into several categories:

Wedge type instantaneous safety pliers

Eccentric block type instantaneous safety clamp

Roller type instantaneous safety pliers

 

  1. Progressive safety gear

It is characterized by elastic clamping of the clamping body, long stopping distance and stable car.

What are the elevator safety circuit switch parts?

In order to ensure the elevator running safely, there are many safety parts on the elevator. The elevator run based on each safety component in normal condition, otherwise it will be stopped. The so-called safety circuit is to install a safety switch in each safety elevator part, all safety switches are connected in series, controlling a safety relay. Only when all the safety switches are on, the safety relay is closed, and the elevator can run electrically.

Safety component switch of common elevator safety circuit:

  1. Speed limit switch (including speed limiter cut rope switch) – when the elevator at a faster rate than the rated speed value must be at least equal to the rated speed (115%), its action can lead to safety clamp work safety device.
  2. Maintenance switch — divided into control cabinet maintenance switch, car maintenance switch and car top maintenance switch. The three repair switches lock each other to prevent wrong operation and ensure the safety of maintenance personnel.
  3. Bottom pit buffer switch — this device is located at the bottom of the well path and is set at the bottom limit position of the car and the counterweight stroke. In the buffer (an elastic buffer safety device used to absorb the car and against heavy kinetic energy). After the action, the elevator cannot operate normally until it returns to its normal elongation position.
  4. Upper and lower limit of interlock switch, when the car running beyond magnetic induction device, flat layer in capsules or have not contact with buffer before the weighing device, forced to cut off the main power supply and control power of the safety device of automatic reset. The device is located as close as possible to the end of the station when working without error in the dangerous position of movement. It shall operate in the cage or before heavy (if any) contact with the buffer and maintain its action status during compression of the buffer. For the forced drive elevator, the limit switch is used to cut off the power supply circuit of the motor and brake. The elevator cannot resume operation automatically after the limit switch action.
  5. Safety clamp switch — check whether the speed limiter is operating. When the speed limiter moves, then a mechanical safety device that keeps the car or the car in a static state and can clamp the guide rail.
  6. Safety window switch — means that the car safety window is equipped with a safety device for manual locking. If the lock fails, the device can stop the elevator. The elevator will not be able to resume operation until it is re-locked.
  7. Door and door interlock switch — door and door of the hall are locked after closing, and the control loop is connected at the same time. The safety device of mechanical & electrical interlock safety device can only operate the car. Its function is that when the elevator car stops at a certain floor station, the door of the other floor station is effectively locked, and if the elevator is opened, it cannot start or keep running normally.

What are the factors influencing the elevator traction machine?

Elevator traction machine is the power of the elevator equipment, and call it is the host; the main function of the elevator traction machine is through the transmission and transmission power to keep normal operation of the elevator, what factors will affect the normal operation of the tractor when it is used? Refer to below:

 

  1. The balance coefficient. We know the capsules and traction is for heavy gravity jointly produced mainly by traction rope, acting on the rope tractive sheave groove keep capsules weight and the weight of the payload balance, make the normal operation of elevator, reduce some of the power consumption of transmission device.
  2. The influence of the equivalent friction coefficient” f “and the shape of the rope groove on the elevator traction machine are also relatively large, with different friction coefficients and varying degrees of influence.
  3. Traction rope tractive sheave on the angle of the traction steel wire rope groove of the contact arc, the size of the friction Angle, the greater the corresponding bigger, so that the elevator safety line will be as high.

How to choose and buy elevator parts correctly?

Along with the development of the city, for some of the high-rise building, if the use of simple stair brightness caused a lot of trouble for people, and people will waste a lot of time, therefore, the emergence of the elevator for people to solve the problem of the stairs, the elevator is not only has the characteristics of simple operation, fast, and it is very convenient in use, the fittings of elevator running is mainly used to help the elevator components, the operation of the elevator depends on the use of the elevator parts, as a result, the quality of elevator parts for elevator has important influence and role, and therefore, when the elevator parts of choose and buy, should how to choose:

  1. There are many different specifications for the selection of elevator parts, so the selection should be made according to the load capacity and model of the elevator, so that it is more convenient to use
  2. When choosing the elevator parts, had better not choose the poor quality of the parts, poor quality of the product when use may cause a lot of trouble, and no good product service life long, and some of the products are special, therefore, when making purchase better pay attention to the place, so that can save time for replacement.

Some Main Technical Parameters of Escalator You Should Know

Rise Height: generally within 10 meters, special conditions can reach tens of meters.

Angle: general for 30 °, 35 °

Speed: generally 0.5 m/s, some ladders can reach 0.65 m/s, 0.75 m/s.

Step Width: 600 mm, 800 mm, 1000 mm.

Theoretical transportation capacity: according to the speed of 0.5 m/s, the conveying capacity of different cascade width is corresponding to 4500 people/time, 6750 people/time, and 9000 people/time.

 

Execution standard

 

Gb16899-2011<< safety specification for manufacturing and installation of escalators and automatic sidewalks

JB/ t8545-2010 “escalator cascade chain, accessories and sprockets”