Best Installation Process for Elevator Guide Rail and Rail Bracket

The elevator guide rail not only controls the movement of the elevator car and the counterweight, but also provides strong support for the elevator to be braked when the car has an unexpected overspeed. So elevator guide rail is an important part of elevator running under quality and safety. The quality of elevator running is good, or not, which depends on the quality of elevator installation, and also the quality of elevator guide rail installation depends on the quality of elevator installation. So we will analyze how to install the elevator rail bracket, elevator guide rail with best process for you.The elevator guide rail not only controls the movement of the elevator car and the counterweight, but also provides strong support for the elevator to be braked when the car has an unexpected overspeed. So elevator guide rail is an important part of elevator running under quality and safety. The quality of elevator running is good, or not, which depends on the quality of elevator installation, and also the quality of elevator guide rail installation depends on the quality of elevator installation. So we will analyze how to install the elevator rail bracket, elevator guide rail with best process for you.

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(1) Installation process of elevator guide rail bracket

  • 1) If the elevator shaft is brick wall, concrete casting guide rail bracket is generally adopted with a depth of no less than 130mm.
  • 2) If the hoistway is brick-concrete-structured or concrete ring beam, the guide rail bracket should be installed on the concrete ring beam.
  • 3) If the vertical deviation of the hoistway exceeds the standard, the hoistway should be changed or use the rail bracket spacer for adjustment.
  • 4) After the hoistway design is completed, the installation of guide rail bracket for each brand elevator will be different according to actual situation.
  • 5) The long guide rail bracket will be selected when the hoistway size is larger than standard drawing.
  • 6) The guide rail bracket is processed sequentially according to actual distance between guide rail bracket and hoistway wall. How to local the installation position of rail bracket? The installation position will be located according to center line and auxiliary line of rail bracket, and then do spot welding with level rail gauge.

(2) Installation process of elevator guide rail

  • 1) Elevator guide rail and counterweight guide rail that is set with counterweight safety should be fixed on the solid ground base. The pit guide rail base should be kept horizontal, the levelness does not exceed 1/1000, and the height is about 60mm, and which is concreted around leveling with concrete.
  • 2) To check the straightness of elevator guide rail and keep it within 1/6000, if the nonstandard guide rail should be adjusted or replaced. Checking the end of tenon whether all right, clear the tenon before installation.
  • 3) During elevator guide rail, use the winding machine to lift the guide rail, the last guide rail should be cut according to actual length before lifting.
  • 4) After installation of elevator guide rail finished, the guide rail should be adjusted from bottom to top, if where any deviation is, correct it immediately.

Functions of Thyssenkrupp Elevator Service Tool (Elevator Test Tool) DT-100

Thyssenkrupp Elevator Test Tool DT-100 can be used for Thyssenkrupp Elevator in following:

  • Speed Check and Input
  • Replace Call Board
  • Replace MC2 Motherboard
  • Match Encoder to Frequency Inverter
  • Counterweight Adjustment
  • Door Motor Adjustment
www.elevatorvip.com Functions of Thyssenkrupp Elevator Service Tool (Elevator Test Tool) DT-100

Functions of Thyssenkrupp Elevator Service Tool (Elevator Test Tool) DT-100

www.elevatorvip.com Functions of Thyssenkrupp Elevator Service Tool (Elevator Test Tool) DT-100

Functions of Thyssenkrupp Elevator Service Tool (Elevator Test Tool) DT-100

At present, the model of DT-100 Elevator Test Tool it has been off production, so many customers are looking for it, but it is very difficult. If you want to have one for your job site, please contact ElevatorVip soon.

Video of Thyssenkrupp Elevator Test Tool DT-100

How to install and adjust Elevator Roller Guide Shoe?

Notes for installation of roller guide shoe in following:

 

1) Inspect installation situation of the guide rail, if there are some positional deviation at the step of rail or rail gauge, which should be adjusted before working.

 

2) Inspect interval of safety gear whether meets in the range of standard requirements, the interval between 2 blocks should not less than 2-3mm.

 

3) The bayonet of safety gear should be aligned with jaws center of roller guide shoe, the interval is between top plate of two slots and top of guide rail must not less than 5mm.

 

4) The roller of guide shoe should be perpendicular to the surface of guide rail, and the middle roller should be aligned with top surface of guide rail.

 

5) The maximum pressure of roller guide shoe should not exceed 25kg, and the pressure on each roller should not exceed 12.5kg, if the pressure could not be adjusted, then the car should be done the static balance and dynamic balance.

 

6) The residual oil should be cleaned after finished installation of roller guide shoe if there has, make sure there is no any oil on the surface of guide rail.

One-stop Supplier of Elevator / Escalator Parts Christmas Best Wishes to Customers elevatorvip.com

Christmas Best Wishes to Customers

One-stop Supplier of Elevator / Escalator Parts Christmas Best Wishes to Customers elevatorvip.com

Christmas Best Wishes to Customers elevatorvip.com

A Christmas greeting and good wishes to you. Here is wishing you all a Merry Christmas and a New Year bright with joy and success.

Working Principle, Function, and Structure of SELCOM Elevator Door Lock

The elevator door lock is the locking device for car door and landing door (usually refers to landing door). Normally, the landing door does not be opened without unlock device, which it is protecting the passenger safe. So the door lock is the important safety device for elevator.

Today, ElevatorVip.com will take the SELCOM Elevator Door Lock as an example to introduce in following:

Working Principle, Function, and Structure of SELCOM Elevator Door Lock www.elevatorvip.comWorking Principle, Function, and Structure of SELCOM Elevator Door Lock www.elevatorvip.com

Working Principle, Function, and Structure of SELCOM Elevator Door Lock www.elevatorvip.com

Structure of SELCOM Elevator Door Lock

The elevator door lock is mainly composed of look hook, lock ring, force unit, roller, door wheel for unlocking, electrical safety contact, and triangular door lock.

  • Lock Hook and Lock Ring consists of locking results, which ensures the landing door does not be opened, the meshing depth up to 7mm, and the endurance over 1000N.
  • Force Unit is used to reset door lock automatically after landing door opening, which is the resetting device, even if it fails, gravity will not unlock the door.
  • Roller and Door Wheel of Unlocking are used for unlocking door, when elevator arriving, the door motor transfers power through a series of mechanisms, and eventually the door vane drives the roller and door wheel to open the landing door.
  • Electrical Safety Contact is used to detect hook and lock ring is meshed together up to 7mm, or not. Once the electrical safety contact is opened, the elevator shall not be run.
  • Triangular Door Lock is located in landing door, which is used under abnormal conditions, non-professionals are not allowed using.

How to check and repair ABA26800XU1/XU2 Motherboard of OTIS OVF30 Frequency Inverter?

OTIS OVF30 Frequency Inverter is the earlier model used in OTIS 300VF control system. Due to it is over 10 years since from used begin, so there is relatively high damage in using ABA26800XU1 / ABA26800XU2. Now, ElevatorVip company has repaired so many ABA26800XU1 and ABA26800XU2, and then we hope show the experience of easy to damage and not easy to find failure to share with you.

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Failure No.1: Power on normally, and the words ‘X04A’ displays on the frequency converter motherboard, the UDX indicator light keeps turning on and off continuously, at the same time, UDX relay keeps absorption status continuously, and also BRK indicator light is off.

 

Solution No.1: The failure is usually caused by a problem with IGBT drive signal circuit of the driver board not be captured, which is caused by the increase of resistance value of R118-R124=499Ω. Replacing the broken resistance can solve the problem.

 

Failure No.2: Power on normally, and the words ‘X04A’ displays on the frequency converter motherboard, the UDX indicator light keeps turning on and off continuously, at the same time, UDX relay keeps absorption status continuously, and also BRK indicator light is on shortly and then goes off.

 

Solution No.2: This fault is generally caused by the increase of the resistance value of current sampling resistance in the current detection loop. The resistance value of R146, R149, R152 and so on becomes larger, so replace all the bad resistances then will it goes well.

 

Failure No.3: Power on normally, the words ‘!04A’ displays on the frequency converter motherboard.

 

Solution No.3: The fault should be verified with Elevator Service Tool (Elevator Testing Tool), the fault code ‘M4-2-1’, which means ‘UDX not picked NC’, the UDX NC is poor contact or bad action, finally detect the resistance in R78, R75, R77 and R83, to confirm it is normal or not, if it is damaged, just replace it then will be fine; the another situation is ‘UDX not picked NO’, which means R78 resistance is damaged.

 

Warm Reminder: During check and repair ABA26800XU1/XU2 Motherboard of OTIS OVF30 Frequency Inverter should be used Elevator Service Tool (Elevator Testing Tool), which will find the failures quickly.

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The main changes &cases of the new check regulations for the “anti-clamp device”

This article refers to escalators for new terms and contents.

Apron plate clamp shall be installed on the apron of escalator.

1) Consisting of rigid and flexible parts (e.g. brush and rubber profile);

2) The protrusion quantity from the vertical surface of apron should be 33mm and 50mm;

3) Rigid components should be 18 mm to 25 mm horizontal part, flexible components should be the minimum horizontal protrusion 15 mm, the maximum 30 mm;

4) In the inclined section, the vertical distance between the lowest edge of the rigid part of the apron anti-clamping device and the volume leading edge should be between 25 mm and 30 mm;

5) In the transition section and horizontal section, the distance between the lowest edge of the rigid part of the apron anti-clamping device and the highest position of the volume surface should be between 25 mm and 55 mm;

6) The lower surface of the rigid parts should form an inclination angle not less than 25 degrees upward with the apron plate, and the upper surface should form a inclination angle not less than 25 degrees downward with the apron plate;

7) The end part of the apron plate clamping device should be gradually reduced and smoothly connected to the apron plate. The end point of the apron board anti-clamping device shall be located at the front of the intersection line between the tree pool and the tread (on the side of the step) not less than 50 mm, and the position of the maximum 150 mm shall be equipped with the apron board anti-clamping device.

 

The project is not only for new escalators, but also for the existing escalators.

Anti-clamp device size sketch map

Anti-clamp device size sketch map

Anti-clamp device case 1

Anti-clamp device case 1

Anti-clamp device case 2

Anti-clamp device case 2

Vibration factor analysis of gearless elevator main machine

  1. Influence of main machine’s basic vibration frequency

The vibration rate is F=N/60, of which N is the rated speed of the main machine.

For elevators with gears, the vibration frequency is greater than 20-30HZ, the impact is obvious, mainly for the feeling of shaking feet; but for elevators without gears, the frequency is mostly between 2-5HZ, if the car vibration is relatively large (such as single-frequency corresponding amplitude of more than 4MG), there will be a feeling of car, that is, low-frequency. The chatter (guide rail Boot Shoe friction excitation) also causes a similar phenomenon.

According to experience, for a gearless elevator with acceptable elevator performance, if the corresponding amplitude of the upper base is mostly within 2.5 MG, the human body may feel jitter, but it is acceptable; if the corresponding amplitude of the fundamental frequency is within 1.0 MG, there is basically no sense of vibration.

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  1. The influence of (magnetic steel) polar logarithm

At this time, the vibration frequency of the car is shown as the rated frequency of the motor: N/60*P is the extreme logarithm.

Case: Six OH5000 MRL, 630KG, 1.0M/S, the main vibration frequency of the sedan is 19HZ. The amplitude of the frequency corresponding to the serious section is about 12MG, the vibration A95 value of the sedan is about 35MG. The foot shaking feeling is serious when the human body rides.

The main machine has a rotating speed of 95R/MIN and a pole number of 12, so that the rated frequency of the motor is 95/60*12=19HZ, which is consistent with the vibration frequency in the car.

For this kind of vibration problem, it is suggested to conduct in-depth analysis of electromagnetic field factors to find the root.

  1. Factors related to rolling bearings

At this time, the vibration frequency of the car is shown as N/60 * ball number (or even one of them), which can also be said to be reflected in a certain frequency doubling of the basic vibration frequency of the main machine; in addition, frequency doubling phenomenon is generally common under impact conditions. And the impact of the ball and the inner and outer rings of the bearing is basically in line with this condition, that is to say, the frequency doubling phenomenon caused by the impact may also occur in the working condition of the rolling bearing.

Elevator vibration in a business center (OH5000, 1000KG, 2.5M/S) is mainly reflected in the fundamental frequency 4HZ (motor speed 239R/MIN, corresponding rotation frequency 4HZ) and its order frequency doubling. This phenomenon, on the one hand, may be caused by the main machine excitation frequency-car/spring suspension system frequency close to the resonance, on the other hand, may also be related to the working conditions of rolling bearings.

  1. Effect of static balance or dynamic balance on main machine

At present, the second main machine of 007 has done dynamic balance test, it is said that there are improvements: whether the dynamic balance has a great impact on the vibration in the car can be judged according to the elevator performance after the main machine is installed.

  1. Influence of main air gap

The air gap should be uniform during the idling of the main machine, and some changes may occur after the load is suspended. For example, the noise problem of the improved OH5000MRL in early 2006 (highlighting the peak frequency, 818HZ), mainly with the mainframe

The air gap is related. The impact of this change on the vibration and noise of elevator is analyzed.

  1. The theoretical model of air gap can be established to analyze the effect of air gap on the magnetic field (magnetic field strength, magnetic force, etc.). The influence of air gap on the mechanical structure of tractor (shaft) can be transmitted to the car through the tractor-wire rope.
  2. If possible, the change of air gap during loading can be tested. The test results can be analyzed by structural theory and actual elevator vibration.
  3. Measures to reduce vibration of main machine
  4. Establish the factory standard of tractor by controlling the vibration amplitude (twist vibration, vertical vibration, etc.). To control from the source. The specific criteria specified in the standard should be determined on the basis of a large number of empirical data.
  5. By improving the whole ladder isolation system, enhancing the resistance of the elevator system to the main machine.

Advantages of gearless traction machine of elevator

The emergence of gearless traction machine caters to the development needs of elevators, to meet the needs of environmental protection, but also to meet the interests of manufacturers. It was born not only for the needs of elevators in inorganic rooms, but also for energy saving and noise reduction. Survival of the fittest, we can see its infinite prospects (no rotating mechanism, low wear and tear, simple assembly, low noise, low energy consumption, fuel economy, smooth operation and easy maintenance, etc.)

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The advantages of gearless traction machine are:

  1. Wear is low. The greatest advantage of the gearless tractor is that it has no rotating structure, and there is no place for mechanical wear except a set of bearings on the rotor shaft of the motor (which is also the traction shaft). Without abrasion, the service life of tractors is naturally prolonged.
  2. Energy saving. Because there is no transmission mechanism, there is no mechanical power loss, relatively speak. It also saves energy and operating expenses. The load is 1000KG. For example, the OTIS geared tractor (traction ratio is 1:1) needs 11KW and the gearless tractor (traction ratio is 2:1) only needs 6.7KW.
  3. Installation is simple. Because the tractor is directly fixed on the shaft of the motor, the structure is compact, light, easy to hoist and transport, so it is much easier to install in the field. For example, the load 1000KG, the speed of 1.0M/S variable frequency speed elevator: OTIS tooth tractor 17CT, self-weight 1300K, gear-less tractor WEB-1.0-1000, self-weight 300KG.
  4. Smooth operation. Because there is no transmission structure, there is no belt transmission of lost rotation, skid. The elevator has high accuracy and reliable operation, and there is no noise and vibration of gear operation. Thus, the elevator runs smoothly and the noise is low. This is also a prominent feature of the elevator green revolution.
  5. Safe oil. The gearless tractor has no transmission structure, so it saves the lubricating oil in the traditional reducer. It only has enough lubricating grease in the bearing. Daily maintenance does not have to replace the cumbersome lubricating oil, but also to avoid the pollution and maintenance difficulties caused by the leakage of lubricating oil, and save the cost of lubricating oil.
  6. Easy to use. Because the gearless tractor has no liquid lubricant, no leakage, not only no pollution, but also can be installed in any posture, such as foot hanging upward on the roof of the well.

Benefits of control systems for gearless traction machines:

The gearless traction machine has designed the “power short circuit” link, using the “permanent magnet synchronous motor”. Short connection of three-phase windings can be used as generator operation “this outstanding advantage, effectively avoid the elevator out of control. This link embodies the following advantages:

(1) When the elevator runs out of control (e.g. when the elevator stops running, and the brake failures can not be stopped) slipping occurs, because of winding short-circuit, power generation braking, in a very small speed will produce a great function, so that the speed of the elevator slipping becomes slow, will not cause the elevator damage passenger casualties tragedy.

(2) The gearless traction machine installed in the shaft and when a fault stop is needed to evacuate passengers outside the flat layer area, it can be operated conveniently outside the shaft by connecting the steel cable of the opening wrench; it is safe to open the gate and slide slowly into the flat layer position.

(3) When the elevator is heavily overloaded (for example, over the rated load of 150%) causing the elevator to sink, its sinking speed is very slow, will not cause passengers extreme panic and improve the safety and reliability of the elevator.

These are the advantages of gearless traction machine as above listed and we do believe that it will be better serve the public in the future.

How to refit escalator chain breaking protection system into auxiliary brake system?

The additional brake is an important safety device of escalator, when the drive chain of the escalator falls off or breaks accidentally, the additional brake can carry out emergency braking, it can make the escalator slow down and stop effectively, prevent sudden stop and reverse and protect the passenger’s personal safety.

 

Whether additional brakes are required for escalators? The regulations TSG T7005 — 2012 “elevator supervision and periodic inspection rules — escalator and automatic sidewalk” require additional brakes to be installed when the working brake and step drive device of escalator are not connected by shaft, gear, multi-row chain or multi-row chain.

 

Recently, inspectors found that the escalator of a brand of regular inspection, the use of the longer period, the production date was on 1996. According to the inspection rules, when the working brake of escalator is not connected with a multi-row chain or a single-row chain, additional brake must be installed. Therefore, the escalator does not meet the requirements, so it shall be rectified.

Retrofit scheme:

First, the requirements for additional brakes: The additional brake shall be connected with the step chain by a shaft, gear or multi-row chain and shall be mechanical and brake by friction principle. Thus, it should be able to directly stop the drive wheel, and the way to stop should be direct, not through the indirect way to achieve, such as belt

Secondly, under the action of braking force, additional brakes are required to effectively slow down and stop an escalator running downward with brake loads. This means that additional brakes can reliably stop the escalator’s drive wheel, rather than just applying force to the parts associated with the drive wheel, such as the drive shaft, and should produce enough force to stop it completely.

Finally, the additional brakes should be forced to cut off the control circuit at the start of the action and work in any of the following situations: over speed, before the nominal speed exceeds 1.4 times, and retrograde (when the steps change the specified direction of operation). There is a requirement to disconnect the safety circuit, that is, the added device should have electrical considerations and be able to detect the speed of the escalator. Generally speaking, the speed measurement system of the additional brake should be a programmable electronic system related to safety, which should meet the requirement of SIL2 and should be tested and verified.

From what has been discussed above, adding a set of devices to make it conform to the above points can meet the requirements of relevant standards and regulations. For the escalator, the existing truss space of the escalator and the existing drive chain breaking protection system can be utilized to add a set of devices to realize the function of additional brake.