RU74994U1 - MANUAL TWO-SPEED ACTUATOR FOR PIPELINE FITTINGS - Google Patents

Abstract

1. Manual two-speed actuator for pipe fittings, comprising a gear train, a driven (output) wheel, connected with a locking mechanism, a flywheel and a speed switch, characterized in that the drive shaft consists of two parts with drive gears fixed to them, separated by a switch speed controlled traction, passed through the part connected to the flywheel of the drive shaft and kinematically connected with an additional (switching) flywheel. 2. A two-speed manual actuator for pipe fittings according to claim 1, characterized in that the chain sprockets are rigidly attached to the driven gears, and the speed switch is spring-loaded to the side connected to the flywheel of the drive shaft part and is made in the form of a clutch, for example, cam.

Description

The utility model relates to mechanical engineering and can be used as a drive for shutoff and control valves.

Known manual actuator pipe fittings (see patent No. 65606, F16K 37/00), comprising a housing placed in it gear transmission driven wheel which is connected to the spindle moving mechanism, and the drive wheel is controlled by a flywheel.

A disadvantage of the known actuator is the need to make a large number of revolutions when closing the shutoff valves of a valve or valve. Moreover, the greater the gear ratio of the gear pair, the more it is necessary to make revolutions to close the fittings, and therefore spend more time.

Also known is a two-speed manual drive of pipe fittings (see application No. 2006120042/06, F16K 31/00, prototype), comprising a planetary mechanism housed in a housing with a cover, the output sun wheel of which is fixed to the shaft connected to the locking mechanism, a flywheel and a switch speed is placed on the lid with the possibility of interaction with the shaft of the solar wheel of the planetary mechanism or with the carrier through

groove made in the cover.

The disadvantages of the known device include low consumer properties consisting in the inconvenience of switching the speed of the drive.

The technical problem solved in the proposed device is to increase the consumer properties of a two-speed drive consisting in the convenience of switching speeds.

The problem is solved by the fact that the drive shaft consists of two parts fixed to them by the drive gears separated by a speed switch controlled by a traction passed through the drive shaft part connected to the flywheel and kinematically connected to the additional (switching) flywheel, and sprockets are rigidly attached to the driven gear chain transmission, and the speed switch is spring-loaded to the side connected to the flywheel of the drive shaft and is made in the form of a clutch, for example, cam.

Figure 1 shows a diagram of a two-speed manual actuator for pipe fittings.

The drive contains a mechanism for moving the spindle 1 (driving nut) mounted on it a driven gear wheel 2 reduction gear interacting with a drive gear 3 mounted on the inner part 4 of the drive shaft separated by a switch 5 controlled by a rod 6 passed through

the outer part 8 of the drive shaft connected to the flywheel 7. The rod 6 through the pivoting levers 9 pivotally mounted on the spokes 10 of the flywheel 7 is connected to an additional (switching) flywheel 11. On the outer part 8 of the drive shaft is also mounted a drive gear 12 of the overdrive gear interacting with the driven gear 13 rigidly connected to the drive sprocket 14 of the chain gear 15 driven sprocket 16 which is rigidly connected to the driven wheel 2.

The switch 5 is made in the form of a clutch, for example a cam, spring-loaded in the direction of the control flywheel 7.

The drive operates as follows.

Closing pipe fittings.

Through the flywheel 7, the raising gear pair 12, 13 and the chain gear 15 the torque necessary to overcome the friction forces in the gear and in the packing, the pressure of the medium on the spindle cross-sectional area is transmitted to the spindle 1, which controls the shut-off element of the pipe fittings.

When the sealing fields of the movable and stationary elements of the valve shutter touch, we tighten the movable flywheel 11 (without releasing the handwheel 7), which through levers 9, rod 6, switch 5 activates the reduction gear 3, 2, which transfers increased torque to the spindle 1 necessary to create effort

providing a sealing specific pressure on the sealing fields of the valve fittings.

Opening of pipe fittings.

To move the moving parts of the shutter, the flywheel 11 is pulled to the flywheel 7 by activating a reduction gear with the moment necessary for stragging. After straining, the flywheel 11 is lowered, the switch activates the overdrive 12, 13 under the action of the spring, and through the flywheel 7 quickly opens the shutter of the pipe fittings.

Thus, due to the fact that the process of opening and closing the pipe fittings is performed by the operator without opening his hands from the flywheel, as well as the operation of gear shifting, which improves the consumer properties of the drive.

Claims (2)

1. Manual two-speed actuator for pipe fittings, comprising a gear train, a driven (output) wheel, connected with a locking mechanism, a flywheel and a speed switch, characterized in that the drive shaft consists of two parts with drive gears fixed to them, separated by a switch speed controlled traction, passed through the part connected to the flywheel of the drive shaft and kinematically connected with an additional (switching) flywheel. 2. A two-speed manual actuator for pipe fittings according to claim 1, characterized in that the chain sprockets are rigidly attached to the driven gears, and the speed switch is spring-loaded to the side connected to the flywheel of the drive shaft part and is made in the form of a clutch, for example, cam.