Cage door device

Abstract

The invention provides a cage door device and an encoder which is suitable for a cage door motor 4 in the cage door device. The cage door device comprises a door head 3, the cage door motor 4, a circulating system, a guide rail 8, a left hanging plate, a right hanging plate, a left door plate, a right door plate, an anti-theft device 26, a door knife 25, an anti-collision device 15 and a frequencyconverter 17, wherein the circulating system comprises a driving wheel 5, a driven wheel 6, a tensioning device 16 and a transmission belt 7 connected between the driving wheel 5 and the driven wheel6; the left hanging plate and the right hanging plate are hung on the guide rail 8; and the left door plate and the right door plate are hung on the left hanging plate and the right hanging plate. The cage door device is characterized by being provided with an integrated anti-theft door knife device 12 comprising the anti-theft device 26 and the door knife 25, the cage door motor 4 is arranged ona bracket 20 positioned at the front of the door head 3, and the cage door motor 4 directly drives the driving wheel 5 to drive the circulating system to do cyclic reciprocating motion within the width range of the door head 3. The invention also provides the encoder which is suitable for the cage door motor 4 in the cage door device. Compared with the prior art, the invention has the characteristics of compact structure, safe and reliable use, greatly-reduced manufacturing cost, energy saving, environment protection, stable performance; and the anti-collision device is arranged so as to avoid from generating noise caused by hard collision due to the power effect when the cage door device is opened or closed in place. The installation of the integrated anti-theft door knife device effectively prevents passages from pulling the cage door away and generating dangers.

Description

technical field [0001] The invention provides a car door device for an elevator and an encoder suitable for a car door motor in the car door device provided by the invention. Background technique [0002] The device used for the actual elevator car door switch mainly has the following structures: 1. It is a car door device equipped with a cylindrical rotary motor, and its drive motor is fixed on the top of the car door, that is, the drive motor The top of the car should be high, which requires the height of the door of the car door to be high. The disadvantages of this structure are: the material cost of the door of the car door is increased, and because the driving motor is higher than the top of the car, the top floor machine room needs to be added The height to adapt, thus increasing the construction cost. 2. The driving motor is placed above the upper end of the car door, and a deceleration pulley device is required. This structure not only increases the cost of the dec...

AI Technical Summary

Problems solved by technology

[0002] The device used for the actual elevator car door switch mainly has the following structures: 1. It is a car door device equipped with a cylindrical rotary motor, and its drive motor is fixed on the top of the car door, that is, the drive motor The top of the car should be high, which requires the height of the door of the car door to be high. The disadvantages of this structure are: the material cost of the door of the car door is increased, and because the driving motor is higher than the top of the car, the top floor machine room needs to be added height to accommodate, thus increasing construction costs

3. The other is that the car door motor is installed below the upper end of the car door head. At this time, the height of the car door head must completely include the height of the entire car door motor. If the height of the car door is affected by the elevator product Due to the limitation of design, the radial dimension of the motor will be limited. In order to meet the requirements of the motor torque, the axial dimension of the motor must be increased, so that the thickness of the entire car door device needs to be increased, that is, the dimension perpendicular to the direction of the elevator entrance and exit is increased. The size of the lifting channel where the elevator is installed will become larger, which increases the cost of the building. This installation position also causes the motor to generate a large bending moment due to the influence of its own tension when it is moving, which requires the strength of the car door as a whole. High, resulting in increased cost of components, difficult design, high manufacturing cost

[0003] In addition, no elevator car door device with an integrated anti-snipping door knife device was retrieved

[0004] After retrieving Chinese patents, there are many patents related to the elevator car door device, but they do not involve solving the shortcomings of the above structure.

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