SU15122A1 - Device for automatic transfer of the belt from the working pulley to the idler and back in the transmission of an air power unit - Google Patents

Description

The proposed device is designed to automatically stop the operation of the drive air-blowing unit when the pressure of compressed air in the collector is higher than that set by transferring the drive belt from the working pulley to the idler, automatically restarting the device to the action of the reverse belt transfer to the working pulley when the air pressure drops.

In FIG. 1 shows a general view of the installation in front; FIG. 2 - the same side; FIG. 3 - detail of the distributor spool; .fig. 4-crane front; FIG. 5 is the same from above; FIG. 6-spool valve; FIG. 7- detail of the connection of the valve with the distributor rod; FIG. 8 - distributor in longitudinal section; FIG. 9 is the same, in section along the line AB of FIG. eight.

On the compressed gas collector 10, in which the pumps 1, 1 inject air, there is a pressure reducing valve with a tube 40 connected to the distribution valve D (Fig. 1, 8), in the cylinder of which the piston 19, pressed by the spring 41 and the spool 20 (FIG. 8, 6, 3), inside which the rectangular section of the piston rod 22 of the piston 19 slides, limited on both sides by the shoulders, the distance between which is chosen so that at the end of each return and progressive movement of the piston, these shoulders abut the spool, last little move of. The distributor cylinder is provided with a channel 21 ,. able to coincide with the capillary channel 21 in the gold spool 20. The piston rod 24 of the piston 19, connecting joint 25 with a thrust 26, mounted on the square 27 of the valve plug jET (Fig. 7), turns said plug and thus opens or closes the valve .

When the valve is open, the compressed air and the collector 10 through the pipe 32, the channel 29 (Fig. 4} and the pipe 38 enters the cylinder of the pneumatic device E, whose stem turns the double-arm lever 36, due to which the plug 42 moves, throwing the drive belt from the idle pulley to the working and back.

When the gas pressure in the collector 10 rises above normal, to which the spring of the pressure reducing valve C is adjusted

The latter passes through the tube 40 compressed air, which enters the cylinder of the distributor D, presses on the piston 19, which, moving, opens the valve D through the stem 24 due to the compressed air from the collector 10 through the pipe 32, channel 29 (Fig. 4) c. the stopper of the crane and the pipe 33 enters the cylinder of the pneumatic device W and presses the steam valve 43, turning the lever 36 through the stem of the double shoulders, which moves the fork 42, driving the driving belt from the transmission 9 to the idler pulley 8, as a result of which the pumps 1, 1 stop working, I apply of the air in the collection 10.

When the pressure in eborpik 10 starts to press, valve C closes, the flow of compressed air into distributor D stops, and the air in it gradually comes out through channels 21 and 21. Under the action of spring 41 krav E closes, tube 32 connected to the atmosphere. The compressed air from the cylinder E will be released through the pipe 33 to the outside, and the spring 43 will turn the double-arm lever 36, as a result of which the drive belt will shift to the working pulley 7 and the pumps 1, 1

the air supply to collector 10 will come back into operation again,

The subject of the patent.

Device for automatic transfer of the belt from the working pulley to the idler and back in the transmission of an air power unit, characterized by the application, used for automatic translation of the belt, two-armed growling, g 36 driven by the piston rod of the pneumatic device G (Fig. 1), whose cylinder is connected with compressed air collector 10 by means of tubes 33 and 32 fixed in the walls of the crane E, equipped with an internal channel 29 (FIG. 4), connecting, with proper rotation of the crane, the tubes mentioned and, in addition, releasing A bore 39 for which the valve is connected to the piston rod 19 of the distributor D (Fig. 1), the cylinder of which is connected to the tube 40 with the reducing valve C installed on the collector 10, to release air from the cylinder of the distributor with reverse In the course of the hole, in the body of the cylinder there is a channel 21 (FIG. 8), opened and closed by a spool 20.