RU1768733C - Internal compactor for mortar mix - Google Patents

Abstract

Use in construction. SUBSTANCE: invention contains a housing with a vibration-insulated tubular handle mounted on its brackets, an electromagnetic exciter of oscillations placed in its cavity, the stator of which is connected by means of elastic elements to the core. The latter is rigidly connected to one of the ends of the plate radiator, The exciter of oscillations is equipped with additional elastic elements in the form of adjustable springs The vibration-proof handle is equipped with shock absorbers in the form of differently arranged coaxially and in contact with each other mennymi poles of permanent ring magnets. The main elastic elements are made in the form of arcuate plates. The brackets and the handle are made of dia - and ferromagnetic materials. Moreover, the handle has cavities filled with ferromagnetic fluid at the ends of which the ring magnets are placed. The latter cover the free ends of the brackets with a gap, connected by elastic casings to the ends of the handle 2 silt (L C

Description

The invention relates to devices for deep vibration compaction of building mixtures

It can be used as a hand-held vibrating tool in many sectors of the national economy, in particular in construction for pouring concrete.

A well-known deep sealant of building mixtures, comprising a protective housing with a vibration-insulated tubular handle mounted on its brackets, an electromagnetic oscillator of the stator located in its cavity, is connected by means of elastic elements to a core rigidly connected to one of the ends of the plate radiator

The disadvantages of the device are the following occurrence of lateral loads on the emitter (which do not coincide with the direction of travel of the core) causes the T-shaped core to touch the stator, and the brackets and core to touch the adjusting screws. This worsens the quality factor of the oscillatory system (efficiency) and causes frictional wear of the structure and increased noise, increasing the parameters for damping the vibration is a paramount requirement, and a handle made of elastic material does not dampen vibrations sufficiently - the vibrator body - the hand of the worker

The aim of the invention is to provide ease of use, increased service life and reliability.

This goal is achieved by the fact that in the deep sealant of building mixtures containing a protective housing with a vibration-insulated tubular handle mounted on its brackets, an electromagnetic vibration exciter placed in its cavity

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the stator of which is connected by means of elastic elements to a core rigidly connected to one of the ends of the plate radiator, the electromagnetic exciter of oscillations is equipped with additional elastic elements in the form of springs of adjustable stiffness, the vibration-insulated handle is equipped with shock absorbers in the form of constant annular poles located coaxially in contact with each other magnets, the main elastic elements are made in the form of arched plates, the brackets and the vibration-insulated handle are L-shaped and correspond continuously from diamagnetic and ferromagnetic materials, wherein the handle has vibroizolirovanna at the ends of the cavity filled with ferrofluid, which has annular magnets, with the gap covering free ends of arms connected via elastic covers the axial ends of the handle.

Figure 1 shows a General view of the device; Fig. 2 is a view of a shock absorbing handle.

The device comprises a housing 1, in which a stator made of electrical steel 2, an electromagnetic oscillation exciter with an electrocoil 3 is mounted.

On the arcuate springs 4 of elastic steel in one layer, which are attached at one end to the stator 2, the core 5 of the vibration exciter is strengthened. Anchor 5 is connected to the stator 2 by means of coil springs 6 and adjusting wings 7, holes 8 are provided in the housing 1. On the cortex 5, a rigid radiator plate 9 is mounted for outputting vibrations to the actuator 10 through an elastic cover 11. Diamagnetic Gs are attached to the housing 1 -shaped brackets 12 included with their free ends in the sets of ring magnets 13. The sets of ring magnets 13 are motionlessly located in the L-shaped ferromagnetic tubular handle 14, on the bend of which there is an opening 15 in one pipe wall. The gap between the brackets 12 and the magnets 13 is filled with ferromagnetic fluid 16.

At the ends of the tubular handle 14 and the brackets 12 are elastic casings 17.

The device operates as follows.

In geometry, the arcuate single-layer springs 4 are selected such that, when the coil springs 6 are weakened, the core 5 has a clearance relative to the stator 2, which makes it possible to reduce the clearance by tensioning the springs 6 and

selecting the position of the desired vibration system. Simultaneously in width and thickness, single-layer springs 4 are selected from the conditions of structural rigidity requirements

such that the forces along the 0-Y axis and the perpendicular plane of the drawing (Fig. 1) from the actuator 10 to the core 5 do not cause a significant displacement of the core 5 relative to the stator 2. When the coil is turned on in electric. 50 Hertz network The vibrator operates at a frequency of 100 Hertz and oscillates in the direction along the 0-X axis. The vibrator is tuned for resonance stiffness and maximum amplitude with adjusting

5 by screws 7 through holes 8. In the following, the amplitude of oscillations to the actuator 10, passage through an elastic cover 11, which protects the inside of the instrument from water and dirt. Holes 8 jammed

0 plugs (not shown in the drawing); Ring magnets 13 of alternating polarity are inserted into the handle 14 (see Fig. 2). They are not required to be fastened, since the rings are reinforced with their own magnetic fluxes, and inside the pipe they stick to it and form magnetic circuits between adjacent magnets 13.

The diamagnetic brackets 12 are inserted inside the magnets 13 and attached to

0 to the housing 1, the casings 17 are shifted to the attachment points of the brackets 12. Magnetic fluid is charged into the gap-magnets 13 - brackets 12. After this, the air outlet 15 is jammed (soldering screw 5 was screwed) and the ends of the handle are closed by covers 17.

When lifting the tool by any shelf of the handle in the direction of the axes 0-X, 0-Y or at an angle to them, the arms 12 of the handle

0 rely on a layer of magnetic fluid that opposes the misalignment of the rod inside the magnets and provides cushioning.

L-shaped application

5 creates a magneto-liquid shock absorber with six degrees of elasticity, in particular for a hand-held vibratory tool.

The technical and economic efficiency of the proposed device is seen

0 primarily in improving working conditions and safety (vibration illness), as well as improving reliability and durability.

Claims (1)

The claims 5 Depth sealant construction mixtures, comprising a protective housing with a vibration-insulated tubular handle mounted on its brackets, an electromagnetic oscillation exciter located in its cavity, the stator of which connected by means of elastic elements with a core rigidly connected to one of the ends of the plate radiator, characterized in that, in order to ensure ease of use, increase service life and reliability, the electromagnetic vibration exciter is equipped with additional elastic elements in the form of springs of adjustable stiffness, a vibration-insulated handle - shock absorbers in the form of opposed field located coaxially and in contact with each other the permanent ring magnets themselves, the main elastic elements are made in the form of arcuate plates, the brackets and the vibration-insulated handle are L-shaped and, accordingly, of dia- and ferromagnetic materials, the vibration-insulated handle has cavities at the ends filled with ferromagnetic fluid in which the ring magnets are placed, covering with a gap the free ends of the brackets connected using elastic casings with the ends of the handle. Cpq3.d cpus. 2. 35