SU1227456A1 - Percussion-action machine - Google Patents

Description

The invention relates to devices for percussion and can be used as a working body of vibrators, a handheld mechanized tool in construction, mining, foundry, and a stand for testing materials and products for shock loads.

The purpose of the invention is to reduce noise by eliminating hard blows between the striker and the working tool by introducing a hydraulic connection between them.

FIG. 1 shows a percussion machine, longitudinal section; in fig. 2 - elastic element, longitudinal section.

The percussion machine contains the housing 1, the drive, which is mixed in it, including a kinematic connection, connected to the elastic element 2 and the rod 3 of the striker 4, covered by the working cylinder 5, the compensation cylinder 6 with the piston 7 enclosed in it and the working tool 8. The rod 9 of the piston 7 and the rod 3 of the striker 4 are made in the form of earrings pivotally connected to them. The working tool 8 is made in the form of an elastic diaphragm forming a cavity 10 with the body 1, constantly communicating with the working cylinder 5. The elastic element 2 is made in the form of a torsion rigidly fixed at one end to the body 1. The kinematic connection is made in the form a cam-of-lever mechanism comprising a cam 11, a finger 12 rigidly attached to its end, a lance-shaped rocker 13 interacting with it at the beginning of the working stroke, a roller 14 carrying a free end at the free end, a cam 11, a rod 15 one way The hinge is pivotally connected to the L-shaped rocker 13, pivotally connected to the other end of the connecting rod 15 two-armed lever 16, rigidly connected to the middle end of the torsion and having freedom of rotation relative to the housing 1, and the free end pivotally connected to the piston 9 piston 7 Link 17 pivotally connected to the middle part of the end of the two shoulders lever 16 and the piston rod 9 of the piston 7 and one end of the rod 3 of the striker 4 connected pivotally to the other end of the link 17 swinging crank 18.

The percussion machine works as follows.

A rotation is transmitted from the electric motor through a reducer (not shown) to the cam 11.

in the direction indicated by the arrow, which through the roller 14, the rocker 13 and the rod 15 turns the double-arm lever 16 fixed by the middle part with the end of the torsion

the elastic element 2. The piston 7, which is connected by the rod 9 to one end of the two-armed lever 16, and the hammer 4, which is connected by the rod 3 to the other end of the lever 16. The cylinder 4 and the piston 7 are moved to the corresponding position of the machine to

 work performance. The cam 11, continuing continuous rotation, leads the end with the roller 14 of the L-shaped rocker 13 beyond the line of centers connecting the axes of rotation of the rocker 13 and the connecting rod 15, one end of which is pivotally connected to the end of the rocker arm 13, and the other with the end of the two shoulders 16. Next the yoke 13 under the action of the elastic forces of the swirled torsion of the elastic element 2 rotates against the stop into the stopper 19. At this time, the working

0, the mixture 20 located in the housing 1 of the machine, through the openings 21 and 22 freely enters the cavities of the cylinders 6 and 5, respectively. The working stroke begins at the moment when the rotating cam 11, with the finger 12, acts on the

 the end of the rocker arm 13, will bring the other end of the rocker arm 13 with the roller 14 away from the stopper 19 beyond the center line, corresponding to the maschine’s readiness to perform the work. At this moment, the “SION” of the elastic element 2 begins to spin up, the drive of the piston 7, which is hinged through the rod 9 with the end of the two shoulders lever 16, and the striker 4, which is hinged to the same end of the lever 16 through the rod 3, link 17 swinging on the curved shaft 18 joint. The bok ek 4 moves in the cylinder in the direction of the orifice 22, which it compresses the working mixture 20, increasing the pressure in the cavity 10 and passing the impact energy to the working surface through the elastic diaphragm of the working tool.

0 In the absence of sufficient contact of the working tool 8 with the working surface of the hammer 4 with the piston 7 continue to move. Porschen 7 closes the hole 21 and compresses the working mixture enclosed between it and the walls of the cylinder. The masking kinetic energy is quenched. All links of the machine, except the cam, come to a quiescent state. The cycle of operation is repeated.

five

ten

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Claims (1)

SHOCK ACTION MACHINE, comprising a housing, a drive located inside it, including a kinematic connection connected to the elastic element and the stem of the hammer, covered by the working cylinder, a compensation cylinder with a piston enclosed in it, and a working tool, characterized in that, in order to reduce noise, the piston the compensation cylinder is equipped with a rod pivotally connected to it, which and the striker rod are made in the form of earrings pivotally connected respectively to the piston and the striker, the working tool is made in the form of an elastic diaphragm, image a cavity that constantly communicates with the working cylinder, an elastic element in the form of a torsion rigidly fixed at one end to the housing, the kinematic connection is made in the form of a cam-lever mechanism, including a cam, a finger rigidly fixed to its end, interacting with it at the beginning working stroke, L-shaped rocker bearing on the free end of the roller, interacting during idling with the cam, connecting rod, pivotally connected to the L-shaped rocker at one end, pivotally connected to the other end Atun two-armed lever, the middle portion rigidly associated with the free end of the torsion bar, and the free end - _β hinged to a piston rod, a link connected Shar S Nirni middle part to the end of a two-armed lever and the piston rod with one end and to the rod of the striker, is pivotally connected with the other end of the link is a swinging crank.