Talking about the common problems in the use of si

  • Detail

Talking about the common problems in the use of sightseeing elevators (1)

the elevator industry is a full high-speed development industry, and the development of elevators is becoming more and more diversified. In the 1970s, the sightseeing elevator appeared on the stage. The sightseeing elevator car and shaft are composed of transparent glass on at least the same side. Passengers can watch the scenery outside the car by taking the sightseeing elevator. The sightseeing elevator expands the visual space of the elevator and extends the narrow elevator space. In the early days, many sightseeing elevators used in hotels and shopping malls were generally installed at home, without the following problems. In recent years, real estate developers have taken sightseeing elevators as a highlight in the sales of buildings to attract property buyers, which has led to a sharp increase in the number of sightseeing elevators used in residential buildings. However, while the sightseeing elevator installed outside the home has the above advantages, there are several problems that cannot be ignored in the process of safe use

1 the anti pinch device is easy to malfunction

the anti pinch device of the car door of the sightseeing elevator has three types: photoelectric protection (the most commonly used), light curtain protection, light curtain protection and safety trigger from the demand of the vehicle. It is suitable for the occasions where passengers or objects entering and leaving the elevator need to be protected without touch. The three different types of this material are at 500 DEG; The principle of the anti pinch device after 1000 hours of oxidation under C is similar, which detects the entry and exit conditions of people or objects by sending and receiving light beams. In the process of closing the door, if passengers or objects block the light beam from the photoelectric and light curtain switches or touch the safety trigger, the elevator will immediately open the elevator door to ensure the safety of the elevator. However, at least one side of the sightseeing elevator shaft and car wall is composed of transparent glass, so when the sunlight enters the photoelectric and light curtain switch transmitting hole or receiving hole, the photoelectric and light curtain switch cannot constantly transmit or receive infrared rays and light beams, so the elevator door cannot be closed until the sunlight is blocked, resulting in false failure and elevator stop. In order to avoid this kind of phenomenon, elevator users replace the photoelectric and light curtain safety contact plates with mechanical safety contact plates, which increases the maintenance cost. Passenger elevators with fully enclosed hoistways use photoelectric and light curtain safety contact plates. The sunlight cannot shine into the photoelectric and light curtain beam emitting or receiving holes, so this kind of false failure of elevators will not occur

2 the temperature in the lift car is close to the outdoor temperature

because the sightseeing elevator shaft is composed of one or several sides of glass, and the glass has poor heat insulation performance, the temperature in the shaft and lift car is close to the outdoor temperature in summer. If the outdoor temperature is very high and there is no air conditioner in the car, passengers simply can't stand it. During the inspection, the author encountered a 4-storey elevator supervision and inspection. The lift car is composed of all glass, and the hoistway is surrounded by all transparent glass. At 9 a.m., the temperature of the hoistway and the lift car reached 42 ℃, exceeding the standard requirement of the maximum temperature of 40 ℃ for elevator operation and test specified in the "elevator technical conditions", so that the inspection cannot be carried out. The author requires the elevator user to add cooling facilities to the elevator shaft and car, and rectify the elevator. The elevator manufacturer installed a 1-piece air conditioner on the top of the car with the thermal insulation film in the well to cool down, which barely reached the ambient temperature of the elevator. The user spent 25000 yuan more on this rectification alone. In addition, the display button in the lift car is 12.7mm wide for a long time. In high temperature environment, it is easy to cause the display diode to be damaged, resulting in incomplete display of the display button in the lift car. Replacing accessories increases the maintenance cost. For the passenger elevator with a fully enclosed shaft, the shaft is made of reinforced concrete, which has the function of heat insulation, but the car temperature is about 10 ℃ lower than the outdoor temperature. Passengers will not feel muggy when taking the elevator, and the display buttons in the car are not easy to fail

3 the high temperature in the hoistway makes the internal parts of the hoistway easy to be damaged

the elevator hoistway is the passage for elevator operation, and the high temperature in the hoistway can cause the following problems:

(1) when the car is running, it can lead to the overcurrent of the car door motor, cause the door motor to burn out, accelerate the aging of the wires of the car and the junction box of the door motor, and the aging of the power wires of the landing door and the car lock

(2) the sticking point failure rate of the up and down operation buttons on the car roof is twice as high as that of the fully enclosed hoistway, and the car roof emergency stop switch is easier to be damaged

(3) the aging of traveling cable, pit emergency stop switch, upper and lower limit switches, upper and lower limit switches, tensioner switch, hydraulic buffer electrical switch, energy storage buffer and other components is faster than that of the fully enclosed shaft, which increases the failure rate of the elevator

(4) the lubricating oil of the car and counterweight side guide rail is easy to dry up. Poor lubrication or the failure of the lubrication system will cause the damaged surface of the rolling or sliding parts to be shut down for repair, which will increase the failure rate of the elevator, which will affect the brand credit of the elevator company; The increase in maintenance costs will increase the burden on property owners; In addition, the temperature in the elevator shaft is high in summer, and the maintenance personnel are oppressive when entering the elevator shaft to maintain the elevator, which increases the difficulty of maintenance

2 low density

Copyright © 2011 JIN SHI