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 avoid elevator car door failure?

The failure of elevator door system accounts for a large proportion of the total failure of elevator, among which the door mechanism is the most frequently running system in the work of elevator, which is directly related to the safe and reliable operation of elevator. The failure rate of car door system also accounts for a considerable proportion in the failure rate of door system. The main reason is that the installation technology of door system is not up to the design requirement. The interpretation of the car door below is shared.

  1. The door opener, car door, safety security sensor, and the installation of the door knife have been completed by the installation team at the time of maintenance.
  2. The adjustment of car door is the premise of door system adjustment. Only after the door is adjusted, will the door be calibrated.
  3. First remove dust from the door with a pair of fan, and then grind the track of the door with more than 300# sandpaper to ensure the flexible operation of the door.
  4. The door must be adjusted to:
  • The distance between the door plate and the floor sill is 4mm;
  • The distance between the door and the front wall of the car is 4-6mm (not too small). Check method is to use just ruler on two pieces of door plank up and down side, whether it is balance.
  • The front and side of the door must be vertical to ensure that the door is properly sewn when it closed, meanwhile when opened; it joined to the front of the car. After adjusting the car door, you can open and close the door manually. The whole switch process should be easy and smooth.
  1. Adjust the security sensor and light curtain. When the contact plate is extended, the contact plate’s protrusion is suitable for 30mm to 50mm, and the same amount of two contacts is used. The light curtain should be even, and no abnormal trigger should occur during the rapid opening and closing process, especially for the rear light curtain to keep clean.
  2. Adjust the opening knife: step 1: make sure the distance between the door knife and the floor sill of the hall door is 7mm, and ensure the vertical direction; Step 2: determine the distance between the blade of the door knife and the decoupling roller of the door lock of the hall door is about 7mm. Check running elevator to observe all the way, depends on the clearance of most hall door, can be in a small range on the left, right, right amount translation car door assembly (this method is not applicable to double synchronous door knife of double folding door such as TD3200 car elevator door machine); Step 3: the two surfaces of the door knife blade, namely the one of the rollers, must be vertical. Step 4: check that when driving the door, the blade should not make abnormal sound.
  3. The speed of opening and closing shall be adjusted when the door of the sedan chair drives the door of the hall. The speed shall be controlled at about.070m/s. The speed of opening and closing doors should be gentle according to the elevator’s different acceleration and deceleration.