SU872244A2 - Percussion-action machine - Google Patents

Description

(54) SHOCK ACTION MACHINE

The invention relates to impact devices and can be used as a manual mechanized tool in construction, mining, as well as a test stand for materials, products and structures for impact loads. According to the main author. St. No. 74771D, a percussion machine is known, comprising a housing, an actuator, a drummer, a working body, rotor beams, a shaft and a precision percussion mechanism, including a copier and a spring-loaded chip 13. The disadvantages of the known percussion machine are its low reliability and durability. The purpose of the invention is to increase the durability and reliability of the machine. This goal is achieved by the fact that the machine is equipped with a shock absorber mounted on the rotor axis on rotor beams, which periodically interacts with the drummer, copier and latch of the accurate drum output mechanism, are rigidly connected to each other and spring-loaded relative to the body along the axis of the copier, the front part of the drummer and the tongue made of elastic material. FIG. 1 shows a percussion machine, longitudinal section; in fig. 2 shows section A-A in FIG. one; in fig. 3 - the node T in FIG. 2; in fig. 4 shows the IT node in FIG. one; in FIG. 5, node III in FIG. 2; in fig. 6 is a section BB in FIG. five; in fig. 7 - ra; bb cut in fig. five; in fig. 8 - section G-Y in FIG. five; in fig. 9 is a view of D in FIG. five; in fig. 10 is a view E of FIG. 9. The percussion machine consists of a housing 1 (Fig. L), a drive 2 connected to it (Fig. 2) and a working body 3. A drive 2 is connected via a coupling (not shown) to a shaft 4 rotating 3 in supports 5 with an installed on it a rotor in the form of two rotor beams 6, at one end of which is located shaft 7 with a drummer 8 movably mounted on it. Inside the hammer body 8 there is a firing pin 9 and a damping element 10. At the front part of the drummer 8 is fixed an elastic element 11, damping reverse bounces striker 9 after hitting. At the other end of the rotor beams 6, a cross member 12 is installed, balancing the rotor beams 6 and the shaft 7 when the rotor rotates (Fig. 2) On the side of the drummer 8 there is an elastic crest 13 (Fig. 2 and 3), which fixes the latter relative to the latches 14. At the same time, the rear part of the striker B concerns a shock absorber fixed along the axis of the rotor on the zotor beams 6. This shock absorber is made in the form of an elastic element 15 fixed together with the elastic element 16 on the strip 17 with an air gap (Fig. 4). cool The centrifugal regulator (fig. 5, 8-10), consisting of two rods 18 with loads 19 placed on them, clamps 20, springs 2Gi adjusting nuts 22 (fig.10), is mounted to the rotary beams 6 and the axis of rotation of the rotor. Across the rotor shaft 4 with the possibility of translational movement therein is a rod 23 connected to the latch 14, a leash 24 and connected to the clamps 20 by means of oblique grooves 25 (Fig. 9). The mechanism of the accurate output of the hammer is made in the form of a latch 14 rigidly connected to the copier 26, placed inside the shaft 4 with the possibility of translational movement relative to the rod 23. The copier 26, the latch 14 is spring-loaded us abutment 27 relative to the housing and the elastic member 28 as a spring (FIG. five). The copier 26 has bevels 29 (FIG. 5), one of which is working and the other is used to dynamically balance the copier as the rotor rotates. The elastic element 28 is installed between the shoulder of the stop 27 and the rod 30, having the possibility of translational movement relative to the housing 31 by rotating the handle 32, which moves relative to the housing 31 by means of a thread. The handle 32 is fixed in any arbitrary position after the operator ceases regulating action by the spring 33 and the washer 34, the end of which is in gear with the body 31. The washer 34 has the possibility of translational movement relative to the rod 30 along its square profile (Fig. 7), On the housing 31, a stop 35 is rigidly fixed in contact with the working surface of the copier 26 during rotation of the rotor. A stop 36 and an elastic element 37 are installed between the rod 23 and the latch 14. Nuts and washers 38-40 are provided for fixing the rod 23, the stop 35 and the rod 30. The percussion machine works as follows. At the initial moment of rotation, the striker 8 is in position 0 (Figs. 1 and 2), fixed by latch 4 by the tongue 13. The loads 19 with the clamps 20 are tucked in by the springs 21 so that the rod 23 rests against. the upper ends of the oblique grooves 25 (Fig. 9). The elastic element 28, which presses the copier 26 with the latch 14 against the hammer 8, is in a free or slightly compressed state (Fig. 5). When the handle 32 is rotated, the rod 30 is displaced in the axial direction, which is fixed at one end to the handle. In this case, the elastic element 28 is compressed, pressing the abutment 27 against the copier 26. At the same time, the spring-33 is compressed, pressing the washer 34 against the copier 31 and fixing the handle 32 in any position left by the operator. When the drive 2 is turned on, the rotor of the machine begins to accelerate. At the same time, the loads 19 of the centrifugal regulator (Fig. 9) fixed on the clamps 20 begin to disperse, compressing the springs 21. The clamps 20 with oblique grooves 25 made in them diverge with the loads 19 .. The slant grooves 25 displace the rod 23 together with the latch 14 , the cam 26 and the stop 27 down FIG. 5), compressing the elastic element 28. During rotation, the copier 26 interacts with the stop 27, and at the same time performs reciprocating movements inside the shaft 4. The loads 19 of the centrifugal regulator are exerted by forces from the spring 21. The reciprocating compression of the spring 26 is compressed and releases the spring 21, which, weakened, provides the goods 19 with the possibility of additional divergence, which is transmitted to the rod by oblique grooves 25 of the clamps 20. The rod 23 moves down (Fig. 5, pulls the latch 14, which vehicle inside the shaft 4.

Since the movement of the latch 14 occurs during the oscillatory movement of the rod 23 and the copier 26 between the rod 23 and the latch 14, a stop 36 and an elastic element 37 are provided, damping these vibrations.

Gradually lowering downward, the copier 26 begins to contact with its working surface with the stop 35. Once this contact is made at a certain speed of rotation of the rotor, the working bevel 29 of the copier 26 coincides with the stop 35. At the same time, the latch 14 sinks down along with the copier 26 and loses contact with a ridge 13. The working bevel 29 protects the chaotic output of the drummer 8 and ensures that it is accurately delivered to the shock.

After the contact of the latch 14 with the ridge 13 is lost, the impactor 8 is driven out by the action of centrifugal force to position 6 (Fig. 1 and 2), then to position c, strikes the working body 3 and bounces off.

Upon impact, due to a large loss of kinetic energy, the rotor is suspended, the loads 19 of the centrifugal regulator converge, the clamps 20 are set to the center of rotation, the slanting grooves 25 press the rod 23 (FIGS. 5 and 9), the latch 14 is under the anvil 27 and the spring 28 , comes out of the hole of the shaft 4 and fixes the rebounded drummer 8. Together with the latch 14, the copier 26 rises and exits the contact with the stop 35

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Rebound drummer 8 after hitting o. operating element 3 is damped by elastic elements I5 and 16 of the shock absorber. At the same time, a large part of the exact 5 shock pulse from the rebound of the striker is scattered over the surface of the elastic element 15, 4 remaining with the kinetic energy is quenched at the place of attachment of the latter by the elastic element 10 16. The air gap between the elastic elements I5 and 16 allows them to work effectively to stop drummer 8 in the center of the rotor.

Then the cycle repeats. The invention makes it possible to increase the reliability and durability of mawips.

Claims (2)

1. Percussion machine for auth. St. No. 747714, characterized in that, in order to increase its reliability and durability, it is equipped with an amortizer, fixed along the rotor axis on rotor beams, with which the hammer, copier and latch periodically interact the mechanism of the exact output of the hammer, are rigidly connected to each other and spring-loaded relative to the body along the axis of the copier. 2. Naivet under item I, characterized in that the front part of the striker and the crest are made of elastic material. Sources of information taken into account in the examination I. ABTOpCKOie certificate of the USSR 747714, cl. B 25 O 15/02, 1978 (prototype). I- T FIG. Rig.2 13 Fig.Z ni 872244 gd w BUT five ff and  fS / tfz.5