RU198548U1 - Electric actuator with handwheel - Google Patents

Abstract

The utility model relates to general mechanical engineering, in particular to the means of controlling pipeline valves using the engine and manually. The objective of the claimed utility model is to increase the safety and reliability of the electric drive with a handwheel. The technical result is that the design of the electric drive is simplified and the possibility of priority work is provided. handwheel above the electric drive due to the optimization of the kinematic links in it and the presence of a system of electronic shutdown of the electric motor depending on the position of the handwheel handle. in the case, an electric motor, a gearbox, a handwheel containing a handwheel shaft with a handle, a lock for the disconnected position of the handwheel handle, a clutch consisting of a mustache Coaxially mounted, handwheel shaft half couplings and electric drive shaft half couplings. The handwheel, the electric motor and the kinematic gearbox are interconnected by the output shafts located on a single axis, while the handwheel has an electronic motor shutdown system containing a position sensor for the handwheel shaft half-coupling and an electronic control unit configured to turn off the electric motor depending on the position handwheel shaft half couplings. The handwheel may contain a spring and a ball to limit movement of the handwheel shaft.

Description

The utility model relates to general mechanical engineering, in particular to the means of controlling pipeline valves by means of an engine and manually.

Known electric actuator with a handwheel under the patent RU2239116, published 27.10.2004 Bul. No. 30, containing an electric motor, a reducer, a cam clutch mounted on the input shaft of the gearbox, a gear wheel located on the cam clutch and driven into rotation by an electric motor, a flywheel with a shaft that can be connected to the input shaft of the gearbox, and a flywheel shaft position lock.

The disadvantage of this invention is the provision of priority operation of the handwheel drive over the electric drive by means of a large number of kinematic connections and, therefore, insufficient reliability of automatic shutdown of the handwheel when the electric motor is turned on.

The objective of the claimed utility model is to improve the safety and reliability of the electric drive with a manual override.

The technical result is that the design of the electric drive is simplified and the possibility of priority operation of the handwheel over the electric drive is provided due to the optimization of the kinematic links in it and the presence of an electronic motor shutdown system depending on the position of the handwheel handle.

The technical result is achieved through the use of a system for electronic shutdown of the electric motor when changing the position of the half-coupling of the handwheel shaft.

An electric actuator with a handwheel, containing a housing (1), an electric motor (2), a gearbox (3), a handwheel (4) containing a handwheel shaft (5) with a handle (6), a lock for the disabled position of the handwheel handle (7), a clutch consisting of coaxially installed, a handwheel shaft half coupling (8) and an electric drive shaft half coupling (9).

The sequentially located handwheel, the electric motor and the gearbox are made in a single housing, and the kinematic ones are interconnected by the output shafts located on a single axis, while the handwheel has an electronic motor shutdown system containing a position sensor for the handwheel shaft half-coupling (10) and an electronic unit control made with the possibility of turning off the electric motor depending on the position of the half-coupling of the handwheel shaft.

The handwheel may contain a spring (11) and a ball (12) to limit movement of the handwheel shaft.

The proposed technical solution is illustrated by a drawing, where figure 1 shows a section of the device, where:

1- building

2- electric motor

3- reducer

4- manual override

5- handwheel shaft

6- handle

7- lock of the disabled position of the handwheel handle

8- handwheel shaft coupling half

9- half-coupling of the electric drive shaft

10- handwheel shaft coupling position sensor (10)

11- spring

12- ball

The device works as follows.

When the electric motor 2 is running, the handle 6 of the handwheel 5 is in the latch 7 located on the motor housing 1 and is thus rigidly fixed and does not rotate. The end toothed half-coupling 8 of the handwheel is disengaged with the end-toothed half-coupling 8 of the input shaft 9 of the electric motor. The position sensor 10, located above the handwheel shaft 5, closes the electric motor circuit through the electronic control unit. Motor rotation is not transmitted to the handwheel.

For the operation of the electric actuator with manual control, the handle 6 of the handwheel is removed from the lock 7 and transferred to the operating position. Further, by pressing the hand along the longitudinal axis of the drive, the end toothed half-coupling 8 of the handwheel is brought into engagement with the end-toothed half-coupling 9 of the input shaft of the electric motor 2. The shaft 8 of the handwheel moves axially to a fixed position in which it is held by the spring 11 and the ball 12 , at the same time the position sensor 10 located above the handwheel shaft 5 is also triggered, opening the electric circuit of the motor and turning it off. Rotation from the handle 6 of the handwheel through the end toothed half couplings 8 and 9 is transmitted to the input shaft of the electric motor 2 and then to the output shaft of the gearbox 3 connected to the shaft of the actuator.

To supply the supply voltage to the electric motor 2, by moving the hand along the longitudinal axis of the drive, the end toothed half-coupling 8 of the handwheel is disengaged with the end toothed half-coupling 9 of the input shaft of the electric motor; shaft 5 of the handwheel is transferred from the right fixed position to the left fixed position, while the inductive sensor 10 is triggered, closing the electric circuit of the motor. The handle 6 of the handwheel is fixed in the latch 7.

Claims (2)

1. An electric actuator with a handwheel, containing a housing, an electric motor, a reducer, a handwheel containing a handwheel shaft with a handle, a lock for the disconnected position of the handwheel handle, a clutch consisting of a handwheel shaft half-coupling and an electric actuator shaft half-coupling, which sequentially located handwheel, electric motor and gearbox are made in a single housing and are kinematically interconnected by output shafts located on a single axis, while the handwheel has an electronic motor shutdown system containing a position sensor for the handwheel shaft half-coupling, and an electronic control unit made with the possibility of turning off the electric motor, depending on the position of the half-coupling of the handwheel shaft. 2. The electric actuator with a handwheel according to claim 1, characterized in that the handwheel contains a spring and a ball for limiting the movement of the handwheel shaft.

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