SU1252181A2 - Device for float-finishing surface of fresh-formed concrete and reinforced concrete articles - Google Patents

Description

I

The invention relates to the production of concrete and reinforced concrete products, in particular for smoothing the surface of freshly molded products, and is an improvement of the invention according to the author. No. 1098798.

Fig. 1 shows a device for smoothing the surface of freshly molded concrete and reinforced concrete products, front view; figure 2 is the same, the view in the plan; figure 3 is a section aa in figure 1; figure 4 - section bb in figure 2.

The device for smoothing the surface of freshly molded concrete and reinforced concrete products comprises frame I with brackets 2, on vertical axes 3 of which rollers A are mounted with trapezoidal grooves on the surface of the roll. A gibber 5, having in plan the shape of two identical trapezium, joined by smaller bases, is rigidly attached to the lower part of the beam 6, four trapezoidal guides 7 are attached in pairs to the vertical edges of which. and the profile of the guides 7 is with a longitudinal trapezoidal groove.

The device is equipped with a bracket 8 with interchangeable plates 9 attached to one of the ends of the beam 6. On both sides of the bracket 8 on the vertical axis 10 rotating in the bearings 11, the frame 1 is mounted two eccentric 12, kinematically interconnected by a chain transmission 3. One of the eccentrics is driven into rotation from the actuator 14 through the chain transmission 15. The eccentricities of both eccentrics are directed in the same direction. The stroke of the smoothing bar 5 is equal to the eccentric eccentricity. Brackets 17 with guide bushings 18 and blocks 19 are attached to external transverse beams 16 of crayfish I.

The proposed device for smoothing the surface of freshly molded concrete and reinforced concrete products can be mounted both on the self-propelled portal of the smoothing machine or paver, and on the stationary frame. In any stiffening guide bushes 18 device DS-1ZHNA be mounted sh on verti521811

cylindrical cylindrical directions and cix 20, and blocks 19 should be covered by drive ropes 21 (not shown) of the type of raising-lowering of the device.

5 A device for smoothing the surface of freshly molded concrete and reinforced concrete products works as follows.

The actuator 14 is activated, as a result of which, through the chain drive 15, rotation is transmitted to one axis 10, which begins to rotate in the bearing supports 11. As both axes 10 are kinematically connected between

15 as a chain drive 13, when the actuator 14 is turned on, both axes 10 begin to rotate with eccentrics 12 fixed on them. Since the eccentrics 12 are fixed on

20 axis x 10 in such a way that their eccentricities are directed in one direction and are in contact with the overlays 9 of the bracket 8 attached to one of the ridge ends

25 of the beam 6, to the bottom of which the smoothing bar 5 is rigidly attached, when the drive 14 is in operation, the smoothing bar 5 starts to move back and forth between the guide rollers 4 attached on vertical axes x 3 to the frame 1.

Then, a lifting-lowering drive of the device is put into operation, as a result of which the working smoothing-out 35 bar 5 is lowered along the guides 20 onto the upper open surface of a freshly formed concrete or reinforced concrete product to be smoothed.

 The drive of movement of the smoothing machine is included if the device is mounted on the portal of the self-propelled smoothing machine, if the drive of the device for moving the forms, if

5, the smoothing device is mounted on the stationary frame, as a result of which there is a relative movement of the smoothing bar 5, making reciprocating movements in the transverse direction, and the smoothing surface, the smoothing of the product surface occurs.

Form smoothing bar 5 in

55 plan in the form of two trapezoids, joined by smaller bases, eliminates the dropping of excess concrete mix over the longitudinal sides of the form, and

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collects them in the middle part and dumps at the end of the stroke into a container installed at the end of the form (with a bench and aggregate-flow method of production of products), or into the next 5 form (with a conveyor method of production when the forms are moved with continuous tape).

814

At the end, r; ivani (if the dp smoothing device is mounted on the self-propelled masking portal or paver), the device is lifted by means of an actuator to the upper position, all drives are stopped, and the machine is distilled off to the place of smoothing start.

16 Ht

15

FIG. 3

bb b

V 8 3 P

Editor I. Shulla

Compiled by T.Nevzorova

Tehred M. Khodanich Proofreader V. But ha

Order 4575/19 Circulation 555 Subscription

VNIIPI USSR State Committee

for inventions and discoveries P3035, Moscow, Zh-35, Raushsk nab., 4/5

| Production-poly-raficheskai enterprise, Uzhgorod, st. Design,

Claims (1)

DEVICE FOR SMOOTHING SURFACE OF FRESH-FORMED CONCRETE AND REINFORCED CONCRETE PRODUCTS by ed. St. No. 1098798, characterized in that, in order to improve the reliability and quality of smoothing, it is equipped with a longitudinal beam mounted on the upper surface of the smoothing beam, with trapezoidal guides on its vertical faces and an arm attached to the end of the beam, and the frame has pairwise contact with the guides rollers with a trapezoidal groove located on both sides of the longitudinal beam, and the drive of reciprocating movements of the beam is made in the form of kinematically connected to each other and placed along both sides of the eccentric bracket with eccentricities directed in the same direction. SU, 1252181 A 2