SU1209842A1 - Percussive pneumatic machine - Google Patents

Description

one

The invention of the OTHOCI CH to pneumatic percussion machines used in mining, construction and mechanical engineering ..

The aim of the invention is to increase the magnitude of the specific impact power by reducing the flow of compressed air.

FIG. 1 shows a diagram of the device; in fig. 2 shows section A-A in FIG. one.

The pneumatic percussion machine consists of a barrel 1 with a return duct 2 and exhaust ports 3, a shock hammer 4, a working tool 5, an air distribution device consisting of a valve box 6 with openings of working 7 and an idle 8 strokes, a valve 9 in the form of two regulating elements 10 and 11, connected by arcs 12 and 13 of pins 14 and 15 for fixing the valve against lateral displacements of the upper lug 16.

The device works as follows.

098422

When you start the car compressed air from the line through the gap formed by the element 10 and the valve box 6, and the hole 7 enters

5, the working stroke chamber, then through the exhaust ports 3 to the atmosphere, with the speed of the air flow passing through the gap increasing and the pressure decreasing. As a result, the valve 9, which creates a vacuum, moves and closes the flow of air into the atmosphere, opening the opening 8. At the same time, through the opening 8 and the return channel 2, the air enters the return chamber under the hammer 4 and accelerates it. Drummer 4, moving up, opens the exhaust ports 3, connecting the chamber to the atmosphere. Pressure

: in the slot, the impact on the valve element 11 falls, and on the valve element 10, as a result of compression by the air impactor in the working chamber, the clap: 5 panes are recalculated. Air enters the chamber and acts on the drummer. Drummer begins working stroke.

U

Compiled by JO.Strelov Editor I.Nikolaychuk Tehred T.Tulik

Order 480/40 Circulation 470 Subscription

VNIIPI USSR State Committee,

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Branch PPP Patent, Uzhgorod, Proektna St., 4

FIG. 2

Proof-reader I.Erdeyi

Claims (1)

PNEUMATIC SHOCKING MACHINE, comprising a barrel, a valve box with working and idle windows and radial retainers of the annular valve, characterized in that, in order to increase the specific shock power by reducing the consumption of compressed air, the valve working surfaces are formed by the inner surfaces of two working sections rings interconnected by arc elements, while the working sections of the ring are placed between the radial retainers and the ratio of each of the areas of the working surface ti valve to the area of the corresponding window is equal to 2,25-3,15. SU „„ 1209842>