SU1329973A2 - Device for compacting concrete mix in mould - Google Patents

Abstract

The invention relates to the manufacture of precast products (-f) (tone, specifically for compacting concrete mixes in the mold. The purpose of the invention is to improve the quality and reduce the noise level. The device is equipped with at least a pair of supports 10, each of which is made in the form of a slab 19 with an exciter 20 attached to it and mounted on the movable frame 9 by means of shock absorbers 21 and their height adjuster. The device is completely composite in length from separate sections installed in parallel, the rotating shafts of which are connected between . Minutes by couplings height regulator is configured to: a counter wedges 1 ZP f BACKGROUND yl 7 n) and r...

Description

The invention relates to the manufacture of precast concrete and reinforced concrete products and is in addition to an o / basic av. St. No. 1021619.

The purpose of the invention is to improve the quality of products and reduce noise.

Figure 1 shows the device, side view; figure 2 is the same, the view in the plan (the form is conventionally not shown); on fig.Z - section aa in figure 2; 4 is a kinematic diagram of the operation of the vibro-impact drive; Fig. 5 is a kinematic diagram of the operation of the rotary shaft coupling; Figs 6 and 7 are transverse and longitudinal bb sections of the mount support unit, respectively.

A device for compacting concrete mixtures in the form contains a drive 1 with a gearbox 2 and a connecting rod-crank mechanism 3, a rotary shaft 4 with an intermediate coupling 5 and parallel sections 6. Each section 6 includes a base 7 connected by means of levers 8 to a moving frame 9 The support frame 9 is in contact with the base 7 by means of buffer elements 11, the hinges connecting the levers 8 with the base 7 and the moving frame 9 are equipped with rubber-metal bushings 12. On the base 7 the horizon is mounted taltable rotary shaft 13, provided with lugs 14 and supported at the ends on the bearing supports 15. The central hinges of step 8 are connected to lugs 14 by means of t g 16. The ends of the rotary shafts 13 of each section 6 are connected by means of connecting sleeves 17 and plug-in links T8 of the rotary shafts 13 are connected between themselves.

Each support 10 is made in the form of a plate 19 with vibration exciter 20 attached to it and mounted on a movable frame-9 by means of shock absorbers 21 and a controller 22 of their height.

The latter, in order to increase the reliability of the device's operation under the perception of significant dynamic loads, is made in the form of counter wedges and consists of the upper 23 and lower 24 wedges, between which the central wedge 25 is placed, connected to the upper 23 and lower 24 wedges, for example, Dovetail Adjusting the height of the prop 10

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It is rotated by a nut 26 connected by a threaded joint with a bolt 27 attached to the central wedge 25. By displacing the central wedge 25

 In either direction, the installation of the support 10 to the desired height is achieved.

In this case, the support 10 is exposed in such a way that, when mounted on a device for compaction loaded. a concrete mixture of mold 28 between it and the moving frame 9 there was a gap ff. The magnitude of this gap is selected from the condition that there is no contact.

5 of the movable frame 9 and the mold 28, when vibration vibrations from the vibration exciter 20 are transmitted to it. At the same time, upon impact due to the drawdown of the shock absorbers 21, the transmission of shock pulses from the mold 28 must occur directly through the movable frame 9 to the buffer elements 11.

With an amplitude of vibration oscillations of up to 0.5 mm and an amplitude of shocks from 4 to 10 mm, the size of the gap should be 1.0-3 mm.

To reduce the noise level, the plate 19 and the movable frame 9 are provided with resilient pads 29 and 30, respectively. The intermediate sleeve 5 consists of two coupling halves: a leading 31 and a slave 32, having stops 33 and 34, respectively. To reduce the noise level, the stops of one half coupling For example, the follower has elastic pads 35. To regulate the magnitude of the initial gap / i between the lugs 33 and 34, depending on the amplitude of the impacts, these lugs can be made with the possibility of displacement in the radial direction.

The device works as follows.

Using a bridge crane or other lifting mechanism, the form 28, loaded with concrete, is mounted on supports 10 "They include vibration exciters 20 and drive 1 of the mechanism of shock oscillations. The connecting rod-crank mechanism 3 converts the rotation of the drive into rotational-reversing movement of the shaft 4. The turning shaft 4 is deflected by an angle ct + / 1 in each direction, with the drive coupling half; 31 first selects the gap, and then with its stops 33 comes into contact with the stops 34 of the driven half-coupling 32, thereby causing the 5 links located behind the intermediate coupling to turn

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shaft 13. The movement of the rotary shaft 13 causes the movement of the t 16, the rotation of the levers 8 and the raising of the movable frame 9. After the two hinges pass the neutral position corresponding to the vertical position of the levers

8, the moving frame falls

9. Shaft 13 rotates and stops. 34 of the driven half coupling 32 are rotated by an angle d. , detach from the stops

33 of the driving half coupling 31. After the collision of the buffer elements 11, the rotation of the shaft 13 is stopped. The supports 10 at the moment of impact due to the subsidence of the shock absorbers 21 are shifted downwards, and the inertial load from the weight of the concrete mix and the form 28 is transferred to the movable frame 9, the buffer elements 11 and the base 7.

Then the whole cycle repeats as the rotary shaft rotates in the opposite direction.

Claims (2)

1. A device for compacting concrete mixtures in the form according to the author, No. 10216-19, characterized in that, in order to improve product quality and reduce noise, the movable frame is provided with supports in contact with the bottom of the form with regulators of their height and elastic elements, and the causative agent of directional vibrations is fixed on the lower surface of the supports. 2. The device is pop.1, which differs from the fact that the height adjuster of each support is made with a wedge. fi &. FI.5 in-in ffae.  VNIIPI Order 3525/18 Circulation 524 Subscription Arv-polygr. pr-tie, Uzhgorod, st. Project, 4