SU1413172A1 - Asphalt-laying machine - Google Patents

Abstract

The invention relates to road construction, in particular, to devices for compacting road construction materials. The purpose of the invention is the expansion of operational capabilities. The asphalt paver includes a self-propelled nsssi 1, containing, its base frame 2, a receiving bunker 7 with a sliding bottom, a metering gate 9, a cable block mechanism I) at the lowering of the working body, a removable milling cutter 11 with a drive. The working body 12 includes a vibrating plate and a tamper mounted on a balance frame 13 with counterweights 14 and a screw mechanism 15 that changes the angle of attack, and through the frame 13 to the frame f-ly, 5 il. chassis with hinges. 1 hp

Description

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The invention relates to road construction, in particular, devices for compacting road construction materials - jTOB, and can be used as an Asphalt Paver in the construction and repair of sidewalks, walkways, playgrounds and other objects with asphalt concrete jibiM coating.

I The purpose of the invention is the expansion of operational capabilities. . FIG. 1 is represented constructively: asphalt paver scheme, general, i view; in FIG. 2 is a view A of FIG. one; in fig. 3 - hydraulic scheme of the asphalt paver; in FIG. 4 shows a section BB in FIG. 2 (a con- structive diagram of the compaction of a working body); in fig. 5 - kinematic scheme of the asphalt paver.

The paver includes the chassis 1 of the base machine, containing its frame 2 with the I four running wheels and the power unit 3 with the trans- mission built on it; the drive mission, the steering 4 with the s-; day 5 for the operator, combined, yen; hydrostatic drive 6 for transmission of the course: and working bodies, receiving hopper 7 with I retractable head, eat, metering valve I 8 connected to the screw drive mechanism I 9, mechanism 10 for raising and lowering the working bodies, removable milling cutter 11 with the drive; the working body 12, made in the form of a vibrating plate and trough, of its beam, mounted on a balancing spanning frame 13, equipped with removable adjusting counterweights 14, a screw mechanism 15 changes the angle of attack and is hinged through frame 13 to frame 2 chassis 16 hinges 16. In laboratory conditions in the asphalt paver included guiding course 17 of channel bars.

When using an asphalt paver, it is completed with a sliding formwork, which, like the guide course 17, serves to form the lateral edges of the surface of the coating and prevents the asphalt concrete from getting under the asphalt paver wheels.

The actuator 3 is an internal combustion engine or an asynchronous electric motor, the shafts of which are connected to the hydraulic pump 18 shaft of the hydrostatic drive 6, and connected through the shafts of the hydraulic motors to the shafts of the transmission transmission reducer and the vibrators of the working body 12 and using coupling sleeves and a wedge Replacement gears drive the landing gear wheels, plate vibrators and tamper beam.

Transmission stroke is made in the form of a worm gearbox connected to a transverse axis mounted on bearings on frame 2 and having toothed sprockets at the ends, which are connected via two chains to the drive wheel gearwheels.

The combined hydrostatic drive 6 consists of a hydraulic pump 18, a tank 19 with a filter 20, hydraulic motors 21-23 (transmissions of the course, vibrating plates and a tamping bar) and a hydraulic block including distribute; 1and 24 and 25, hydraulic flow regulators 26-28, safety valve 29 , a valve with a logic circuit OR and AND 30, 31 and gauges 32-35. The hydraulic unit, made in the form of a control panel,

change in travel speeds

revolutions (oscillation frequency) of the shafts of the vibrators of the working organ, reverse movement, control and adjustment of pressure in the hydraulic system.

The mechanism 10 for raising and lowering the working bodies 12 is a cable-block transmission with a winch, the drum of which is lifted or lowered through the rope and blocks pivotally connected to the frame 13 by rotating the frame 13 around

hinge 16 frame 2 nass.

The milling cutter 11 has a gearbox and is driven through it into rotational motion by a hydraulic motor installed on it, which can be included in the hydraulic

stand system, or a separate electric motor. It is designed to destroy the solidified and compacted mixture, and is removably mounted on frame 2 instead of bunker 7.

The working body 12 consists of a tamper bar 36, a reflective shield 37, a vibrating plate 38, to the frame of which the sub-support supports 39 of the eccentric shaft (vibrator) 40 of the tamping bar 36 are bolted. The rods 41 of the eccentric shaft 40 are connected to the tamper bar 36

U-shaped bars. A change in the position of the lower edge of the knife 42 of the rail bar is achieved by adjusting the upper and stop bolts, and the change in its stroke (oscillation amplitude) is achieved by rotating the eccentric bushings on the shaft 40 of the vibrator, which changes the total eccentricity of the bar. The beam 36 consists of two identical parts suspended from the shaft of the vibrator 40 symmetrically about the longitudinal axis

stand, which can be mounted on the shaft 40 so that the direction of their movements can coincide or be out of phase, which determines the magnitude of the disturbing force created by the vibrator and acting on the compacted mixture through the plate. The knives 42 of the beam are replaceable and can be replaced with knives of other shapes. The reflective shield 37 is fastened to the supports 39, and by means of the pull 43, to the rear wall of the frame of the vibrating plate. A centrifugal vibrator 44 is installed on the frame of the slab with a static-KIM moment of unbalance, varied by shifting the two unbalanced sectors relative to each other and determining the magnitude of the disturbing force of the vibronlite.

The vibrating plate 38 has an iodine heating system, made of electric tents 45, located on the upper surface of the plate sole 46, which can vary on the soles of various shapes and lengths.

The balancing female frame 13, suspended by hinges 16 to the base frame 2 of the chassis, is used for mounting on it with the help of the hinges 47 of the working member 12. With the help of removable adjustable counter-loads 14 and the screw mechanism 15, the mass of the working member and the angle of attack are changed.

The balance beam spanning frame 13 consists of two U-shaped levers 48 and 49 telescopically interconnected.

The change in the position of the working body 12 along the length of the frame 2 of the chassis is stopped by pushing one lever of the frame 13 relative to the other, followed by bolting.

Asphalt works as follows.

After starting the engine by turning the knobs of the distributors 24 and 25 of the hydraulic control 6 of the asphalt paver, the hydraulic motors 21-23 of the driveline, plate compactors and tamper beam are turned on, if the knobs of the flow distributors are turned in such a way that the circulation of hydraulic fluid is partially or completely blocked to drain into tank 19. With the manipulator, the handles of the regulators of the flow of fluid in the bones of the respective hydraulic motors move the stand forward and rotate the shafts of the plate vibrators and the tamping bar with speeds and frequency corresponding to the degree of flow shut off in the controller or the volume of hydraulic fluid supplied to the hydraulic motors from the pump. With full overlap of the flow to the drain, the maximum speed of movement and the oscillation frequency of the vibrators of the working bodies are achieved, and when fully opened, the motors are stopped.

By turning the handle of the distributor 25 ": from itself, the paver is reversed, and the shafts of the working body vibrators are not rotated. Nast0

The required operating pressure is controlled by valve 29 and turning the distribution knob. zhtel 24 "from yourself Reception, storage, distribution, dosing of the mixture is carried out through the bunker 7 and gate 8, and compaction of the mixture is performed by the body 12. After compacting the laid layer, the hydromotors of the working bodies are stopped and the frame 13 turns around the hinge 16 .mechanism 10 to its original position. By reversing and turning the driven wheels with the steering wheel in the required direction, the paver occupies a new or previous starting position. During the reverse movement and operation of the asphalt paver in the laboratory room, the analog motor turns on the hydraulic motor (electric motor) for loosening the compacted layer. When working in open areas, milling is performed to grind (if necessary) the hardened mixture.

Claims (2)

Invention Formula 5 1- An asphalt paver containing a hinge connected to the chassis of the base machine of a traction frame with its vertical movement mechanism, on which the working body is installed in the form of successively in the direction of movement of the reflective shield, tamping beam and vibrating plate by means of a screw mechanism for changing the angle of attack, and a feed bunker, characterized in that, in order to expand operational capabilities, the traction frame is made balanced in the form of 5 parallel telescopic two-arm levers, connected at the ends by crossbars with adjusting counter weights fixed to them, and the mechanism of vertical movements of the draft frame is made Q cable block with a winch fixed on the chassis of the base machine, and the working body is placed on the retractable arms of the levers. 2. Asphalt paver n. 1, characterized in that it is provided with a base vertically mounted milling tool mounted on the chassis of the base machine.    i W ..... J.1 .. ru.-i YY - 7 Y lg ABOUT- ) Tf34 -) (.35 28 / J Zo 36 8 9