RU1812094C - Shock machine - Google Patents

Abstract

The invention relates to impact machines - hammers, concrete hammers with a vibration absorber in the axle box, which reduces the negative impact of shock pulses reflected from the bottom, and can be used in construction and mining. covering the anvil shank. In order to increase the reliability of the machine and improve its vibration-proof properties, Gel-shielding surfaces have been added to its structures. At least two washers of heat and vibration-absorbing material are installed in the rubber-metal shock absorber on the outer ends of the rubber elements, which reduce the negative effect of the non-rubber elements of the external temperature Iol of the machine and reverse shock pulses reflected from the bottom. 1 ill.

Description

The invention relates to impact machines - hammers, concrete hammers and perforators having a vibration absorber in the axle box, which reduces the negative impact of shock pulses reflected from the bottom. The invention can be used in construction and mining;

The purpose of the invention is to eliminate this drawback, namely: improving reliability and improving the vibration-proof properties of the machine,

This goal is achieved by the fact that in a percussion machine comprising a body with a working tool, an impactor located between it and the working tool with an anvil installed in the body with the possibility of return and reverse movement, the design of a rubber-metal shock absorber is applied: the machine is equipped with at least two washers of heat- and vibration-insulating material mounted on the outer ends of the rubber elements of the shock absorber.

Thus, in contrast to the prototype, the proposed machine has additional protective heat- and vibration-insulating shielding surfaces in the form of washers made of heat- and vibration-insulating material, protecting rubber elastic elements from the external temperature field of the machine and reverse shock pulses.

With the proposed design of a rubber-metal shock absorber with a shield OD

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thermal conductivity decreases and the absorption coefficient of the rubber shock absorber increases. In this way, a beneficial effect is achieved. .

The invention is illustrated in the drawing, which shows the proposed machine, a General view.

The impact machine comprises a housing 1, a drummer 2 housed in the housing with the possibility of reciprocating motion; Anvil 3 is installed in axle box 4 and has a shank 5 and a collar 6.

The rubber-metal shock absorber 7 is installed in a pre-compressed state between the impact surface 8 of the housing 1 and the collar 6 of the anvil 3 (impact surface 8 is not indicated in FIG. 1). The shock absorber 7 covers the shank 5 of the anvils-sh 3. In accordance with the invention, at least two washers 10 and 11 of heat insulating material are mounted on the outer ends of the rubber elements 12.

The inner diameter of the outer, supporting metal washers 13 and 14 corresponds to the diameter of the KaBovik, and the inner diameter O of one rubber element 12 satisfies the ratio, da is the diameter of the shoulder; The edge 15 of the outermost metal washer 14, as well as the edge 16 of at least one washer of heat and vibration insulating material, touches the surface 17 of the shank 5 s possibly

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In the axle box 4, a working tool 18 is fixed, interacting with the medium to be treated.

The proposed impact machine operates as follows.

Drummer 2 performs a reciprocating-tidal motion under the action of a disturbing sip created by the percussion mechanism. The percussion mechanism is not shown in the drawing. Drummer 2 strikes the anvil chestoic 5. driving circuit, deformation of the ends of elements 2,3 and 18, wave processes, in particular, the creation of shock pulses reflected from the obstruction. Moving the tool 18 to the bottom creates the useful work of destroying the material.

Typically, the ends of the impacted elements 2,3 and 18 have curved spherical surfaces, and local deformations occur during contacts during impact interaction. As a result of local deformations, elements 2,3 and 18 are heated, and

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the generated heat heats the machine body 1, the shoulder 6 of the anvil 3, the anvil 3 itself, the impact surface 8 of the body 1 and the axle box 4. In turn, the generated external heat field of the machine is heated by the extreme metal washers 13 and 14 of the rubber shock absorber 7. In addition, impact interaction of the elements 2,3 and 18 there are reflected back-off shock pulses transmitted through the shoulder 6 to the metal washer 13 and the rubber elements 12. However, the presence of a protective washer 10 made of heat and vibration-insulating material reduces the reflection atelnoe external temperature influence both the floor machine and reflected from the face of shock pulses.

Another washer 11, made of heat- and vibration-insulating material, also protects the rubber elements 1.2 from the external temperature field of the machine and shock impulses reflected from the bottom. Generally, β-glass fiber laminate is used as a heat and vibration insulating material.

Thus, a positive effect is achieved by introducing additional shielding washers into the rubber shock absorber, which reduce the harmful effect of the external temperature field of the machine on the rubber elements and are reflected from the shock impulses.

The use of the entire set of features of the device makes it possible to use less scarce rubber for the manufacture of rubber elements, which, however, has a high resistance to the harmful effects of liquid lubricant.

The proposed sequence of arrangement in the shock absorber 7 of metal washers 13 and 14, washers 10 and 11 of heat- and vibration-insulating material and rubber elements, among other things, prevents the leakage of liquid lubricant from the machine body 1.

In relation to the prototype due to the use of the features indicated in the application, the reliability of the machine and its eibroprotective properties are increased.

Claims (1)

SUMMARY OF THE INVENTION An impact machine comprising a housing with a working tool installed in the housing with the possibility of axial movement of the drummer, an adapter located therewith a working tool, and a rubber-metal shock absorber covering the latter, which means that, in order to increase