SU79773A1 - Vibropress machine for making light concrete stones - Google Patents

Description

The proposed, according to the invention, the design of the vibropressing machine is designed to produce in a stationary plant lightweight concrete stones on hydraulic and air in the rail: uuix from concrete with light aggregates, such as slag, claydite, foamed slags and the like, and is mainly designed for production cinder blocks with 3-5 rows of voids (such as "Peasant nin").

In addition, the machine can produce additional sizes of wall stones - longitudinal and transverse halves, chimney stones, stones textured on one side, blocks with and without relief, as well as liner blocks., For different types of ceilings and other types of stones, stacked in the size of 62X40 cm at heights, up to 19 cm.

The machine works on solid pallets. To change from one type of product to another, only three parts need to be changed: a molding box, a stamp and a feed box comb.

Required product height is achieved by cutting off excess concrete

after intensive pre-compaction with subsequent pressing of the die (with vibration) against the stop, which allows to obtain an exact height of products with a tolerance of ± 1 mm.

The working operations of the machine are automated using a hydraulic system (with the exception of loading pallets into the store).

The composition of the machine (Fig. 1 and 2) includes the following main elements and components: bed 7; bunker 2 for loading concrete; nutritional box 5; under-bed table 4 with a vibrator; a molding box 12 with marks 20 for forming voids; bolt 24, bolted to traverse 23: chain conveyor 25; hydraulic control system for working parts of the machine; crib fixtures.

The bed /, the hopper 2 and the feeding box 3 are welded. The bed is made of profiled steel. The bunker is attached to the frame and can be easily removed from it. In the case of manufacture of irregular stones, partitions are inserted into it. Nutrient box box1, eats on tires on ro899

faces. A rubber band is attached to the front corner to clean the die surface from concrete. At the back of the box there is a sheet covering the opening of the hopper when moving forward. Rustlers are placed inside the box; in the manufacture of gemstones, metal partitions are inserted into it.

The podpodny little table 4, which is a ribbed slab, welded from corner and sheet iron, has two grooves on top for the passage of the conveyor chains.

The table 4 is supported by four pair of springs 5 on the frame bracket. Two brackets 6 are fastened to the table, which, through horizontal spacers 7, are connected to the lower frame of the U-frame. T-7 7 enable vertical movement of the lower part of the bracket relative to the frame.

To the LOWER part, about 6 plots: it is an axis 8, on the pins of which the ends of hammers 9 are hinged. The hammers located on both sides of the table have thickenings, which are included in the cutouts of the root sheet 18 of the molding box. In order to adjust the gap between the root leaf cutout and the hammer, the latter has removable, adjustable strikers fixed in the upper thickened part.

Under the table 4, through the hammers 9, the vibrator shaft 10 is passed, the bearings of which are attached to the vertical sheets of hammers. On the shaft 10 mounted unbalance //. The left end of the shaft 10 is connected by means of an elastic coupling (rubber hose) to the motor shaft mounted on the frame arm, which allows a certain displacement of the vibrator shaft relative to the motor shaft. With vertical movement (due to the deformation of the springs 5), the shaft of the vibrator and hammers will also move table 4, the movement of which is transmitted through hammers 9, axis 8 and brackets 6. Horizon 700

The thrust movements of the vibrator shaft 10 occur together with the hammers 9, which swing on the axles of the axle 8. Therefore, when the unbalance of the vibrator is rotated, the SUBPATED table 4 experiences vertical vibration and the ends of the hammers 9 oscillate in both directions from the middle position.

The molding box 12 is fastened to the frame 15 by means of eight springs 13 and the clamping bolts 14. The frame 15, welded from the corners, has sliders 16 which can be moved in the vertical direction along the rods 17 of the bed.

The forming box, which can vary for different types of stones, is a welded piece consisting of the box itself, the root plate 18 and the row of grates 19 with signs 20 to form voids. The grate bars are welded to the upper part of the box, where the shells for rolling the feed box rollers are also welded.

The root sheet 18 on both sides has cuts reinforced with overlays for passing the hammer ends of hammers 9. The size of the cuts along the length exceeds the size of the hammer part of the hammers. When the mold box is lowered onto the pallet, the root sheet is slit on the shock ends of the hammers. When the hammers oscillate and the unbalance of the vibrator is rotated, the first ones put horizontally directed holes along the cut edges of the root sheet. Each turnover unbalance correspond to two Zdara hammers.

Pressing the IK to the under-bed table, the forming box will experience vertical vibrations in conjunction with the under-bed table and horizontal shock vibration from hammer blows. Thus, the concrete is compacted by an intensive method of vibrating by striking, which, when the unbalance shaft revs 2850-3000 per minute, produces a slightly smaller technological effect than high-frequency vibrations with a greater number of revolutions. Places attachments ;.

hammers automatic, eski smeared.

At the bottom of the molding box around the perimeter has a rubber strip, through which it is pressed against the pallet, which eliminates the formation of a gap between the box and the pallet and prevents leakage of cement milk from the box.

The frame 21, as well as the frame 15 of the molding box, is a frame welded from the corners with sliders 16 that can move along the rods 17. To the frame of the dividers through the grate bars / 5, two sheets 22 are mounted in a vertical position, which molding box, serve to separate the core of the concrete layer from the cladding layer. The separator frame is used to form two-layer blocks with a facing layer with a composition different from that of the main body of the block. If the offset blocks are not fabricated, the divider frame is not used.

The stamp 24, produced in relation to the type of forming blocks, is bolted to the cross bar 23, which can freely move up and down on the sliders J6 along the lengths J7.

Due to the bolted connection, interchangeable punches can be attached to the cross bar 23. The lower sheet of the stamp has slots and holes corresponding to the horizontal projection of the signs 20 and the grate 19 of the molding box. When the stamp is pushed into the mold box, the marks and the grate enter the cut-outs of the aptamp, and the mold box itself is outside the Tia strain. This type of die is customary for forming hollow products on solid trays. Such a structure provides free pushing of the block from the forming box.

A conveyor for feeding pallets and delivering finished products consists of two chains 25, enveloping the drive and tension sprockets 26. On the chains through a certain step, the cams are strengthened. As the drive shaft rotates and the chains move, the cams grab the lower pallet from the bag and feed it to the sub-base table. At the same time, the corresponding cam rolls out the pallet with the finished blocks onto the roll table of the receiving table.

The drive to the machine is from two electric motors. One of them drives a vibrator in rotation, and the second drives a hydraulic pump that supplies oil to the hydraulic system of the machine. All movements of the working parts of the machine are carried out automatically by means of hydraulic cylinders, and the on / off control of the vibrator is controlled by electric limit switches.

The machine parts are carefully protected and provided with a proper lubrication system.

The machine is serviced by two workers, and the maintenance of the mortar mixers, the installation, transport and hauling of carts with shelves and other devices are done by individual workers.

The process of the machine is as follows.

Lightweight concrete is loaded into the middle compartment of the hopper 2, and facing concrete is loaded into both extreme compartments. The concrete mix is discharged into the corresponding compartments of the feed box 3, located under the hopper 2. When forming non-walled products, the partitions in the hopper, the feed box and separator sheets 22 are removed and only one lightweight concrete is loaded.

Nutrient box 3 is fed forward. Under its own weight and vibration, it is discharged into the molding box f2, with facing concrete being placed on one side of the dividers and light concrete on the other. The concrete mix in the vibrating box is deposited and is continuously replenished from the feed box below it. Following this, the nutrient box is automatically retracted, while cutting off the excess concrete flush with the top of the molding box, the die 24 is lowered onto the concrete surface and compacts the latter with a pressure of its own weight.

At the moment of contact of the punch with the surface of the concrete, the rise of the dividers begins, which are placed in the corresponding pits of the punch. In the manufacture of non-invoiced blocks, this operation is excluded, since the separators in this case are removed altogether. Under the action of the die and the weight of the punch, the concrete in the mold continues to be compacted, the punch, immersed in the mold box, settles until it is placed on the stops. At this point, the height of the products reaches exactly 190 mm, and the vibrator automatically turns off. After one second, the mold box begins to rise, which is put on the stamp, the grate bars 19 and the marks of the dividers 20 enter the die cut-outs, and the stone is pushed out of the mold by pressing the stamp.

As soon as the molding box reaches its upper position, the stamp automatically rises up, and the molded concrete block remains on the sub-bottom table.

Next, the conveyor chain is turned on, the pallet with the block is fed to the receiving table and at the same time the empty pallet from the bag is fed. Following this, the molding box is lowered, and the next machine cycle begins.

The average number of machine cycles per hour is from 120 to 180; machine productivity - from 40 to 60 stones per shift.

Subject invention

Claims (3)

1. Vibropressing machine for the manufacture of lightweight concrete stones using shock vibration and loading box, characterized in that vertical partitions are used for forming double-layer stones in the forming box, which are removed in the die slot, and in the loading box are corresponding fixed dividers. 2. The machine according to claim 1, which is distinguished by the fact that its vibrating parts are suspended on springs of different stiffness in order to keep the amplitude of oscillations within the specified limits during acceleration of the vibrator, in order to prevent the formation of gaps between the mold box and the tray. 3.Sta-nok for gsh. 1, 2, which is used to lubricate the hammers of the percussion vibrator by replacing a device consisting of an oil bath attached to the hammer and attached to the root sheet of the mold wick box for lubricating the hammer with each lifting of the mold. . FIG. one 78 b Fng. 2 Section II