SU952596A1 - Vibrated platform - Google Patents

Description

The invention relates to apparatus. You need for vibroplating materials and can be used in the manufacture of products from precast concrete and reinforced concrete.

The vibroplatform is known, the working body, the balancing frame, the main elastic connections, the shock absorbers and the vibration exciter C1.

Closest to the proposed one is a vibroplatform containing a balancing frame mounted on a base on elastic supports with a crank-connecting rod exciters, the connecting rods of which are connected by means of elastic elements to the working element in contact with buffer elements and dampers with a balancing frame t2.

The disadvantages of the known devices are the large dynamic loads on the foundation.

The purpose of the invention is to increase reliability and durability. The above objective is achieved by the vibroplatform containing a balancing frame installed on a base on elastic supports with a crank connecting rod exciters of oscillations, the connecting rods of which

elastic elements are connected to the working body in contact with buffer elements and shock absorbers with a balancing frame, provided with additional elastic supports, the working body is made with rods fixed to its lower surface, the balancing frame with openings for passage of the last 10, and elastic supports are associated with the lower ends of the rods.

The main elastic supports are fixed in pairs and symmetrically with respect to each additional elastic support. At the same time, the main elastic supports are made annular and mounted concentrically with respect to additional elastic supports.

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FIG. 1 schematically shows vibroplatform, general view; in fig. 2 shows section A-A in FIG. 1 (leaning of the working body on the shock absorber using a rod); in fig. 3 - Var25 ant internal installation of shock absorbers.

Claims (2)

The vibrating platform consists of a working organ.1 and a balancing frame 2 interconnected by shock absorbers 30 and buffer elements 3. On the frame, vibration exciter 4 is mounted, which by means of elastic elements is connected to the working body by means of elastic elements. The fastening of the form 5 is made by electromagnets 6. The vibration of the working body and the frame is carried out separately. The working body rests on additional elastic supports 7 through the rods 8, which are fastened to the working body and the passage through the vertical holes in the balance frame. The frame rests directly on the elastic supports 9, which are located cmviMeTpH4Ho relative to the rods. Such an installation of elastic supports 7 and 9 on the base 10 eliminates the possibility of the appearance of additional torques that can cause the plate to skew and disrupt the vibroplatform's work. When the ratio of the amplitudes of oscillations of the working body and a-, -2 it is advisable to install elastic supports shown in FIG. 2, with FIG. 3. In both parts of the rigidity, the elastic supports 7 and 9 are the same. At –1, a new setup is possible — i and FIG. 2, however, the stiffness of the elastic supports 9 should be 2 times less than the stiffness of the elastic supports. In all these embodiments, mutual extinguishing of the dynamic loads on the base of the working body and the frame is ensured. With a fractional ratio of 1 - 2, dynamic loads have a place, but their values are smaller than in the known vibrating platforms. Vibr site works as follows. in a way. . After loading the mold with concrete, the vibration exciter is switched on for 1-2 minutes. When the working body moves down due to the deformation of the additional elastic supports 7, vertical forces arise, which dampens the dynamic loads on the base 10 transmitted by the elastic supports 9 with a simultaneous upward movement of the frame. In the next half-period, when the directions of mass movement change to opposite loads, they also change direction, but still balance each other. In addition, the additional torques that are transmitted from the frame to the base do not arise, since the elastic supports 9 are symmetrically located relative to stocks. After the required compaction of the concrete has been achieved, the vibration exciter is switched off, the form is removed from the electromagnets and is fed to the post of thermo-moisture treatment. The proposed vibroplatform allows reducing the weight of the balancing frames, reducing the weight of the bases, which will reduce the capital expenditures on construction of the vibrating plates for the vibrating plates. The economic effect per machine is 1.5-2 thousand rubles. The invention includes a vibrating platform containing an equilibrating frame installed on a base on elastic supports with a crank-connecting rod exciters of oscillations, whose connecting rods are connected by means of elastic elements by means of elastic elements, which come into contact with buffer elements and shock absorbers with a balancing frame, and are loaded. that, in order to increase reliability and durability, it is equipped with additional elastic supports, the working body is made with rods fixed on its lower surface, balancing ama - with holes for the passage of the latter, wherein additional resilient support coupled to lower ends of the rods. 2. The vibrating platform according to claim 1, characterized in that the main elastic supports are blocked in pairs and symmetrically with respect to each additional elastic support. 3. Vibration platform according to claim 1, characterized in that the main elastic supports are annular and mounted concentrically with respect to additional elastic supports. . Sources of information taken into account during the examination 1. USSR author's certificate No. 278499, cl. B 28 B 1/08, 1968. 2. Production of large-sized reinforced concrete pressure and non-pressure pipes. Review of VNIIEMS, M., 1976, p. 31, -aris. 12. I-I -eight at // / //// U / T / 7 // U7777 1 3