A method for adjusting the positioning angle of fire doors

Abstract

The invention discloses a method for adjusting the positioning angle of a fireproof door. The method refers to a shell. A door opening limiting mechanism is arranged in the shell. A control circuit board is arranged on one side of the door opening limiting mechanism, and a screw-type electromagnet is arranged on the other side of the door opening limiting mechanism. A limiting clamp spring is arranged between the screw-type electromagnet and one end of a door opening limiting rod. A connecting rod is arranged on one side outside the shell, one end of the shell and one end of the connecting rodare connected through a movable shaft, and the other end of the shell is connected with a door opening angle differential fixing block. The movable shaft is fixed to the connecting rod, and a hydraulic body is fixed to the other end of the connecting rod. A door opening angle adjusting gear is further arranged in the shell and fixed to the movable shaft. A door closing in-place feedback plate isarranged above the door opening angle adjusting gear and also fixed to the movable shaft. Structural design is novel, mounting is easy, manual opening of the fireproof door during fire disaster occurring can be effectively prevented through manual resetting, and safety performance is high accordingly.

Description

technical field [0001] The invention relates to a method for positioning an angle, in particular to a method for adjusting the positioning angle of a fire door. Background technique [0002] At present, there are the following outstanding problems in the existing fire door positioning and releasing devices on the market: 1: The product has poor positioning function for opening the door, and there are problems that it cannot be positioned or needs to be selected and debugged according to the type of door to locate; 2: The process of realizing the positioning of the door is complicated and the production cost is high. , processing is difficult. 3: The equipment needs to be powered all the time, which consumes a lot of power, and the lack of energy saving has high requirements for the system power supply. The constant power supply leads to poor load capacity of the system bus, short communication distance, and unstable communication. It needs DC24V power supply to the electric...

AI Technical Summary

Problems solved by technology

[0002] At present, there are the following outstanding problems in the existing fire door positioning and releasing devices on the market: 1: The product has poor positioning function for opening the door, and there are problems that it cannot be positioned or needs to be selected and debugged according to the type of door to locate; 2: The process of realizing the positioning of the door is complicated and the production cost is high. , difficult to process

3: The equipment needs to be powered all the time, the power consumption is large, and the lack of energy saving has high requirements for the system power supply. The continuous power supply leads to poor load capacity of the system bus, short communication distance, and unstable communication

It needs DC24V power supply to the electric door closer to keep the fire door normally open. The working current of each device needs 40-80mA, and the power is 1-2W. In the case of a large number of normally open fire doors, each normally open fire door needs to be installed with such a device, resulting in poor load capacity of the fire door monitoring system bus, shortened communication distance, unstable communication or slow response time; 4: Product Installation is troublesome, for left-handed doors, right-handed doors need to adjust the internal structure

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