What is the elevator five channel communication system?

Five channel communication of elevator refers to the communication involved with the host of management center, car, machine room, top of the elevator and the bottom. The system can solve difficult problems and also carry out elevator maintenance and repair at ordinary times.

FM radio full-duplex elevator five channel system instructions:

It is a foreign relief system, which used for the elevator trapped or malfunction and it is also used as a communication system when the elevator maintenance. There are car inter-phone, elevator inter-phone (including machine room extension, car top extension, bottom pit extension) wireless extension and wireless host, the operation steps are as follows:

  1. Car phone

1) In case of distress in the car, press the call button gently. The car phone will automatically call the host by voice without any other operation. The time of a two-way call after connecting is 60 seconds.

2) After the host receives the voice call, the on-duty personnel press the alarm button to conduct two-way communication with the call extension.

  1. Elevator phone

1) Pick up the micro phone and talk to the car.

2) Press the “call” button to call the host of the duty room to talk to its implementation

GSM mobile network elevator five parties call system instructions:

also it is a foreign relief system, which used for the elevator trapped or malfunction, and also as a communication system, when the elevator maintenance. There are car sub-machine, handle sub-machine (including machine room sub-machine, car top sub-machine, bottom pit sub-machine) and wireless gateway. The operation steps are as follows:

  1. Car extension branch phone

1) In case of distress in the car, press the call button gently. The car extension will automatically dial out the first phone number.

2) When the first phone number is dialed out, it can be hung up manually (press this call button lightly). Press the call button again and the car extension will dial out the second phone number automatically. The fifth inter-phone number is automatically dialed by the car extension.

3) Repeat steps 1 and 2. These five inter-phone Numbers can be redial. When the car extension dials the inter-phone number automatically, the inter-phone lift in the duty room will stop ringing and the car can be connected to make a call.

  1. Elevator phone

1) Pick up the micro phone and talk to the car.

2) Press the “call” button to call the host of the duty room to talk to its implementation.

  1. Duty room

1) When the call is received, the call can be picked up.

2) Call back in the duty room. Call back the mobile phone card number in the sub-machine and the corresponding car.

  1. When any two parties are talking on the phone, either of them can join the product composition of the GSM three-party (five-party) intercom system.

Why does the elevator have a overspeed governor?

Elevator Overspeed Governor Manufacturer, Lecture on elevator parts and elevator knowledge Elevator Safety Gear & Reducer

Elevator Overspeed governor （Elevator OverSpeed limiter） is one of the safety control components of elevator safety protection system. When the elevator in running ,no matter what the speed governor in the car or the risk of falling or other situations of safety protection devices do not work, safety gear speed governor and linkage will start to work and make the elevator car stop running, to ensure the safety of the elevator.

  1. Installation location

The speed governor is generally located in the elevator machine room. According to the requirements of the installation plan, it is generally installed on the floor of the machine room. However the speed governor also can be directly installed on the bearing beam .The specific position of the speed governor is determined according to the construction drawing and the position of the car and guide rail after adjustment.

  1. Technical requirements
  2. We should pay attention to the speed governor wheel vertical degree of deviation should not be more than 0.5 mm, speed governor wire rope should be aligned with room reserved hole center, the error is not more than 0.5 mm, governor rope groove center and tension pulley rope groove center must be in the same vertical plane. The car will be two rope to the connecting hole, two connecting holes should be on the same vertical line after the connection completed.
  3. According to the requirements of the installation plan, the position deviation of the speed governor should not be greater than 3mm.
  4. The distance between the rope and the guide rail of the speed governor device should meet the requirements of the installation plan.
  5. The tension of the tension device on each branch of the rope shall not be less than 150N.
  6. Speed governor switch and tension wheel switch shall ensure that the control loop can be cut off quickly and reliably when the rope breaks off, falls off, the rope clamp is unhooked or the speed governor is in action.
  7. Notes
  8. The action direction of the speed governor should be consistent with the descending direction of the car to ensure the safety clamp works.
  9. The wire rope of speed governor shall not be rubbed or contacted with the clamping pliers during normal operation.
  10. The steel wire rope of speed governor shall not have any dead bend and a rope sleeve shall be installed at the connection with the cage pull rod and the rope head shall be firmly fastened with a rope clamp
  11. Restrictions

The speed governor must be starting to work before the car speed exceeds 115%.

1) For instantaneous safety gear, the speed governor of 0.80m/s (except roller type).

2) For roller type instantaneous safety gear, the speed governor of 1.0 m/s.

3) for safety gear with buffer effect and for progressive safety gear with rated speed governor not exceeding 1.0 m/s, 1.5 m/s.

4) for progressive security safety gear with rated speed governor over 1.0 m/s, the speed governor of 1.25 *v+ 0.25 /v.

The speed governor is a safety device, so the manufacturer should evaluate the product in accordance with appendix Fo4 of the en81-1/2 standard before it is released. If the assessment result is positive, a type certificate will be issued and must be attached to the equipment. The CE mark is displayed simultaneously on the device.

How to replace escalator step chain and chain wheel?

The replacement of the escalator step chain is a complicated work. but it is also the main part of the overhaul and is one of the few complicated technical tasks. First of all, put the escalator on the maintenance, use the maintenance switch to control the operation of the escalator up and down, so that turn the bottom pit to remove all the steps. The process takes about one day for two people. Fixed one day after removing the steps. Prepare the tools needed to remove the large chain of steps, and meanwhile, prepare the new step chain and the big chain breaking from the back-end removed to the outside of the escalator large frame, a new escalator large chain from the back-end installation, you need to use the guide chain after idling around big chain to make it work on constant track route. Such a good step after adjusting both sides of the rear end of the tightening spring screw can be declared completed. Here must reminder our customer that the escalator chain wheel of the step cannot be replaced individually but must replace the whole set step chain. Because of the left and right chains need to be matched, so we need to replacement for both sides together.

How to replace escalator step chain and chain wheel

How to replace escalator step chain and chain wheel?

Replacement steps as following:

  1. Determine the number of step sprocket to be replaced, preferably in accordance with the whole chain
  2. Remove the inner and outer cover and apron board of the left and right straight-line section of the lower end, about 6 meters in length.
  3. The steps on the chain need to be replaced for removal.
  4. Move part of the chain that needs to be replaced to the position of removing the inside and outside cover plate and apron plate.
  5. Loosen the lower end of the ladder chain and tighten it.
  6. Use special components (or wire) to fix chains that do not need to be removed.
  7. Remove and replace the escalator step chain.
  8. Tighten the cascade chain after replacement.
  9. Install the steps and correct them.
  10. Install other removal parts.
  11. Test run

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.

Otis Escalator Spare Parts 23 Teeth Aluminum Comb Plate (Middle) XAA453CQ8

Aluminum Comb Plate

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.