RU31636U1 - Reversible electromechanical rotation drive for air and fire dampers, for example, blinds - Google Patents

Description

Reversible electromechanical rotation drive for air and fire dampers, such as blinds.

The proposed utility model relates to the field of ventilation systems of high-rise buildings and industrial structures, namely, to reversible electromechanical rotation drives for air and fire dampers, such as blinds.

Currently, in the construction of high-rise buildings and industrial structures, much attention is paid to issues of technical support for fire safety, in particular, to the automatic blocking of ventilation ducts in the case of

a fire when the building or structure is automatically turned off by electricity.

Known reversible electromechanical rotation drive / 1 / for a two-position actuator, the basis of which is a reversible electric motor, the operation of which is provided by the node of the limit switches.

The disadvantage of this drive is the ability to stop the actuator in any position during a power outage, which makes it impossible to use it in ventilation systems.

Known reversible electromechanical rotation drive / 2 / for a two-position actuator, based on an electric drive, gearbox and reverse mechanism, which can be switched manually or automatically from the limit switches.

The disadvantage of this drive is the ability to stop the actuator in any position when the power is cut off, which makes it impossible to use it in ventilation systems.

The reversible electromechanical rotation drive 121 based on a conventional electric motor with a gearbox is taken by the authors as a prototype of the proposed design, as the closest in technical essence.

The task that the authors set when developing the proposed design of a reversible electromechanical rotation drive was the ability to automatically set the rotary plates of the air valve, such as blinds, to the "Closed when the power is turned off.

This problem is solved in the proposed reverse

an electromechanical rotation drive, which contains a housing with a gearbox located in it, the input shaft of which is kinematically connected to the electric motor, and the output shaft - with the rotary plates of the air valve of the blinds type, the unit for automatically turning the blinds plates to the “Closed when the power is turned off.

In an embodiment of the drive, the unit for automatically turning the louvre plates to the “Closed” position is made in the form of a spring torsion bar mounted coaxially on the output shaft of the gearbox and cocked during the rotation of the louvre plates to the “Open” position.

An element of the novelty of the proposed design is the introduction of an assembly for automatically turning the louvre plates into the “Closed when the power is turned off.

In the version of the drive, the novelty element is the implementation of the node for automatically turning the louvre plates to the “Closed” position in the form of a spring torsion mounted coaxially on the gearbox output shaft and cocked when the louvre plates are turned to the “Open” position.

According to the authors, this design will provide reliable overlap of the air channel when the electric drive is de-energized.

The proposed design is presented in the attached drawing, where:

1- building;

2- electric motor;

3- output shaft of the electric motor;

4-gear;

5- output shaft of the gearbox;

6- spring torsion bar;

7 - rotary plates of an air valve of the blind type / on / off actuator /.

The operation of the drive is as follows.

In the de-energized position, the rotary plates 7 of the blinds are in the "Closed, because spring torsion 6 with its force presses the plates 7 to each other and the channel of the ventilation system is blocked by them.

When applying electric power to the electric motor 2, its shaft 3 begins to rotate, kinematically connected with the input shaft of the reduction gear 4, on which the speed decreases to the required

In turn, the output shaft 5 of the gearbox 4 is kinematically connected with the rotary plates 7 of the blinds.

The louvre plates 7 rotate all the way to the “Open when the plane of the plates is located along the axis of the ventilation duct.

Moreover, when turning the plates 7 of the blinds from the "Closed to" Open spring torsion 6 is twisted - "cocked, because one end is fixed to the output shaft 5 of the gearbox 4, and the second to the drive housing 1.

In the position of the plates 7 of the blinds “Open the windings of the electric motor 2 is energized, the torque of the electric motor through the gearbox 4 and the kinematic chain drives the rotary plates 7, overcoming the force

the kinematic chain of the drive of the rotary plates 7, overcoming the force of the spring torsion 6, holds the plate 7 of the blinds in the "Open,

When de-energized, electricity does not flow to the terminals 3 of the electric motor 2, as a result of which the electromagnetic field rotating its rotor disappears and the moment on the rotor becomes zero.

As a result, the spring torsion 6 begins to unwind, rotating the entire drive system and the plates 7 to a position corresponding to the position of the plates 7 of the blinds “Closed.

Thus, when de-energized, the on-off executive system of plates of the air valve of the blinds type closes the ventilation channel automatically.

The device is made of standard materials and components using well-known manufacturing and assembly technologies.

At present, the enterprise has made and tested prototypes of the device and is working on its industrial development.

General Director of OJSC Serpukhov Electromechanical Plant // sV%

The authors:

1.BSE. Second edition. State Publishing House “TSB. Tom. 15 p. 585 Blinds.

2.Big Polytechnical Encyclopedic Dictionary. Scientific publishing house. "The Great Russian Encyclopedia Moscow .. 2000 p. 447. Reversible electric drive.

2a. Big Polytechnical Encyclopedic Dictionary. Scientific publishing house. "The Great Russian Encyclopedia Moscow .. 2000 Reversible gears. 447 p.

: ov M.N.

s M.N.

Malichenko G.P.

Literature.

Claims (2)

1. Reversible electromechanical rotation drive for air and fire dampers, for example, a louvre type, comprising a housing, an electric motor and a gearbox, the output shaft of which is kinematically connected with the louvre rotary plates, characterized in that the node for automatically turning the louvre plates to the “Closed” position is inserted into it ”During a power outage. 2. Reversible electromechanical rotation drive for air and fire dampers, for example, a type of blinds according to claim 1, characterized in that the assembly for automatically turning the shutter plates to the “Closed” position is made in the form of a spring torsion bar, coaxially mounted on the output shaft of the gearbox and cocked during the rotation of the louvre plates to the “Open” position.