RU2100542C1 - Device for float finish and smoothing of surfaces - Google Patents

Abstract

FIELD: float finish of plastered surfaces and smoothing of damp cement-sand and concrete surfaces. SUBSTANCE: magnetostriction vibrator is installed inside the body. Two arched links of a definite length are rigidly connected to the magnetostriction vibrator, they are intended to amplify the amplitude of vibrations. Their working part is bent perpendicularly to the halves of the working member. The free ends of the vibration amplitude amplifiers are engageable in the butt end with the surface of the retainers of the working member halves. The working member halves are connected to the body with the central axle and flexible coupling by means of an adjusting spring. A handle is available on the body. EFFECT: enhanced efficiency. 3 dwg

Description

 The invention relates to construction tools, and in particular to devices for grouting plastered surfaces and smoothing cement-sand and concrete surfaces.

A device for smoothing the surfaces of building products, including a drive, an elastic coupling, a traverse with brackets and blades [1]
The disadvantages of the device include the bulkiness of the system, a large number of mechanical parts, the complexity of moving along the work surface.

Also known is a trowel device containing a housing, an electromagnetic vibrator placed therein, rigidly connected with arcuate links and a working body [2]
The known design does not provide for vibration loading of working elements. Significant dimensions and weight complicate the work and reduce the efficiency of its operation. A design with a significant number of mechanical parts reduces the effect of contact with the surface, therefore, the efficiency.

 The objective of the invention is to increase productivity, efficiency and surface finish. This problem is solved by the fact that the device is equipped with a magnetostrictive vibrator with densely coupled curved given length amplifiers of oscillation amplitude, which are arched, elongated links of exponential shape, significantly increasing the amplitude of oscillations from the magnetostrictive vibrator to the free end of the amplifiers of the amplitude of the oscillations. In this case, vibration from vibration amplifiers is transmitted to half of the composite working body. Equal longitudinal parts of the working body are connected for stiffness by an elastic bond. The longitudinal movement of the device is carried out manually by holding the vibrator body.

 In order to increase productivity, each half of the working body perceives vibration from its free end of the vibration amplifier, spaced in opposite directions along the axis of the vibrator, thereby creating an antiphase transverse loading of the tool and contact at the other end of the waveguide through the mediation of elastic coupling. In addition, the elastic bond in the transverse direction leads to a decrease in vibrations, creating a smoothing effect of the material being processed, and alternating intense vibrational vibrations directed in antiphase to the working body (and the treated surface) will create a compaction effect.

 The working body of the device, fixed centrally by the axis, divided into two equal longitudinal parts, receives alternating vibration from vibration amplifiers bent and spaced along the axis of a certain length through the contact of the free end of the waveguide with one of the halves of the working body. The combination of longitudinal movement with alternating antiphase intense vibration both along the working body and across its body creates an intense smoothing movement of the device, and the direction of the oscillating perpendicular to the machined surface of the movement creates a surface seal, which leads to an increase in the quality of the machined surface.

 In FIG. 1 shows a General view of the device; in FIG. 2, view B in FIG. one; in FIG. 3, view B in FIG. one.

 In the cavity of the housing 1 with a pocket A, a magnetostrictive vibrator 2 is mounted to capture the worker’s hand, powered by a current through a cable 3, tightly attached to it with curved and spaced apart along the axis of the vibrator vibrational amplifiers of a certain length, the free end of which is inserted into the retainer (glass) 5 of the working body 6, consisting of two equal longitudinal parts 6 and 7 (type B) and fixed centrally to the housing 1 by the axis 8. Parts 6 and 7 of the working body are connected for rigidity by an elastic single-turn flat bond a spring 9, one end of which is rigidly attached to the left half (from the opposite side to the right) of the working body 7, the second is attached to the right half (from the opposite side to the opposite) of the working body 6 by means of a control spring 10 (type B).

 The device operates as follows.

 The cable 3 is supplied with an alternating current of sound frequency to a magnetostrictive vibrator 2, which is tightly connected at both ends by vibration amplifiers 4. The amplifiers of oscillations 4 are made of a quite certain length so that they can be rigidly connected to the housing 1, the distance between the supports of the connection should be a multiple of half a wave. The free ends of the amplifier 4 are bent towards the working body, consisting of two halves 6 and 7, perpendicular to the surface being machined and inserted into the latches (glass) 5, rigidly fixed to the right of the vibrator on half of the working body 6 and to the left of the vibrator on half of the working body 7. Both halves of the working body 6 and 7 are connected centrally to the housing 1 by the axis 8. The elastic wave is transmitted through the vibration amplifiers 4 and the glasses 5 to the working body 6 and 7. The latter make an antiphase oscillatory motion. If half of the working body 6 begins to oscillate clockwise, then the second half 7 is counterclockwise. Thus, through the central axis 8, each of the halves simultaneously acts as a vibration load on the surface to be treated.

 In order not to lose contact between the oscillation amplifiers 4 and the corresponding cup 5, the halves 6 and 7 of the working body are equipped with an elastic connection 9, which is a flat single-coil spring, one end of which is rigidly attached to the left half 7 of the working body (type B), the other end is connected with the right half 6 of the working body through the adjustable spring 10. The adjustable spring 10 presses half 6 down, and the right up, thereby pressing the glass 5 to the free ends of the vibration amplifier 4.

 On the other end, the halves 6 and 7 of the working body are connected in an elastic connection on the contrary, that is, a flat spring is rigidly connected to half 6, etc. When the fatigue weakening of the springs 10 they are regulated by increasing their stroke. In addition to creating a constant contact of the glasses 5 halves 6 and 7 of the working body with the ends of the amplifier 4, the elastic bond smooths the vibrations across the entire surface of the material being processed, creating the effect of constant vibration contact loading.

 The device is moved along the work surface by hand grabbing the upper part of the housing 1 (at the place of installation of the vibrator 2) through the niche A.

 Thus, by applying perpendicular to the surface to be treated, intense antiphase vibrational impact on each half of the working body and its movement along the surface to be processed, the total working vibrodynamic alternating working load of the working body that has both intense smoothing and sealing effect on the processed surface is obtained building surface.

 The specified implementation of the device provides increased productivity due to high-frequency alternating loading of the halves of the working body as a result of the effect of out-of-phase vibration loading of the ends of the two halves of the working body. In the new conditions for surface treatment, energy consumption, labor costs are reduced and efficiency is increased, since all the energy of a magnetostrictive vibrator is accounted for by one working body.

Claims (1)

 A device for grouting and smoothing surfaces, comprising a housing, an electric vibrator disposed therein, connected to arched links, and a working body, characterized in that the vibrator is magnetostrictive, longitudinally amplified longitudinally amplified arcs that are multiples of half the sound frequency, spaced apart in opposite directions along the axis of the vibrator in contact with the free ends with clamps located on the longitudinal halves of the working body, connected by an elastic adjustable connection And transmitting vibration perpendicular to the long surface of the working body.

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