SU1288386A1 - Pneumatic drive - Google Patents

Abstract

Invention m. used as a drive reciprocating movement. The aim of the invention is to enhance the functionality of the drive by providing a change in the magnitude of the stroke of the piston with the rod. The cavities 4 and 5 of the cylinder (C) I are in communication with the lines 7 and 12 of the water supply and discharge of the working medium through two-way three-way spools 10 and II. Input 15 spool 10 is connected to line 7 and to channel 6 of CI. Input I8 of spool II is connected to channel 8 of C I, line 17 to output 16 of spool 10, and input 19 to channel 9 of C 1. When overlapped by a piston 2 channel 8, an intermediate stop of the rod 3 is carried out. Further, the direction of movement of the piston is 2 m. Any, depending on the inclusion of email. magnets 13 and 14 spools 10 and P. 2 ill. (L /

Description

one

The invention relates to mechanical engineering, and can be used as a drive for reciprocating movement.

The purpose of the invention is to expand the functionality of the drive by providing a change in the magnitude of the stroke of the piston with the rod.

Figure 1 presents the scheme of the pneumatic actuator; figure 2 - the channel of the cylinder section.

The pneumatic actuator contains a cylinder 1, in which a piston 2 is installed with a one-way rod 3, forming piston and rod cavities 4 and 5 in cylinder I, and cavity 5 is permanently connected by channel 6 to the working medium supply line 7. In cylinder 1, channels 8 and 9 are provided, communicated through two-position three-line spools 10 and 11 with lines 7 and 12 of the supply and removal of working medium. The spools 10 and 11 are controlled by electromagnets 13 and 14, input 15 of spool 10 is connected to line 7, and output 16 - to the line 17 of the spool 11, the input 18 of which is connected to channel 8, the output 19 - to the channel 9, while this line 20 of the spool 10 is connected to the highway 12.

Pneumatic operates as follows.

When the electromagnets 13 and 14 are disconnected, the piston cavity 4 communicates with the main line 12 for discharging the working medium, the rod cavity 5 communicates with the main line 7, the piston 2 moves from the rod 3 to the right for full travel;

When the electromagnet 13 is turned on, the piston cavity 4 communicates with the line 7, the differential mode of movement of the piston

2 with a rod 3 (left, fig, 1). Reverse occurs when the electromagnet is turned off 13.,

When the electromagnet 14 is turned on (the electromagnet 13 is turned off), the piston cavity 4 communicates with the highway 7 through the rod cavity 5 and the spool 11, while the piston 2 moves due to the differential until it closes channel 8, making an intermediate stop. Further, the direction of movement of the piston 2 can be any depending on the switching on or off of the electromagnets 13 and 14.

Claims (1)

Invention Formula A pneumatic actuator containing working lines for supplying and discharging the working medium, a cylinder, a piston with a single-sided rod, installed in the cylinder to form piston and rod cavities, the last of which is permanently connected by a channel to the working supply line, while at the same time Two channels communicated through a controlled switchgear with supply and exhaust lines, characterized in that, in order to extend the functionality by providing a change in the value of the slave which piston stroke - to the stem, the dispenser is in the form of two two-position three-way slide valves, the input of the first spool is connected to the supply line, and an output - to a line of the second spool, whose input is connected to the intermediate channel, and output - to the piston chamber of the cylinder. FIG. 2 VNIIPI Order 7787/32 Circulation 662 Random polygons avenue, Uzkgorod, st. Project, 4 Subscription