RU2684258C1 - Self-propelled vibratory roller - Google Patents

Abstract

FIELD: machine building.

SUBSTANCE: invention relates to road rollers for vibratory compaction of materials and soils. Self-propelled vibratory roller contains the base chassis, the frame of the vibrator, the vibrating roller, the shaft, the vibration exciter, the hydraulic motor of the unbalance drive. Additional vertical frame is connected to the shaft of the vibrator with rolling bearings, vibration exciters of vertical action driven by a hydraulic motor are installed on the left and right ends of the additional frame for acting on the material being compressed in the vertical direction at the left and right ends of the vibrator, in antiphase with the mismatch angle 180° and interconnected cardan shaft.

EFFECT: proposed self-propelled vibratory roller.

1 cl, 6 dwg

Description

The invention relates to construction, namely to road rollers for vibration compaction of materials and soils.

Known vibration roller [see, for example, patent RU No. 2318948 C2, CL. Е01С 19/28, published March 10, 2008, Bull. No. 7] [1], in which the vibro-roll is made in the form of three sections, which roll on the sealing surface and perform vertical vibrations on the crankshaft. When the middle section of the vibratory roll moves up, the side sections move down, i.e. perform a stroke make a compaction of the material. During one rotation period of the vibratory roll, the directions of the vertical movement of the sections change, the idle and operating modes change. The disadvantage of this device is the complex design of the three-section vibratory drum.

Known vibratory rollers [patent RU No. 2405881, Cl. ЕСС 19/28, published on December 10, 2010, Bull. No. 34] [2], in which the vibratory roll is made in the form of two sections with the possibility of rotation on the crankshaft, which makes it possible to make vertical movements in antiphase by each section of the vibratory roll. When one section moves downward, a working course of compaction of the material takes place; the second section idles upward. The disadvantage of the vibrator [2] is the complex design of the crankshaft for rotating sections of the vibrator.

Closest to the proposed invention is a device [patent RU No. 2647537 C1, publ. 03/16/2018, Bull. No. 8] [3], which contains a self-propelled chassis, a vibratory roll frame, a vibratory roll, a shaft, unbalances, a hydraulic motor, rubber-metal shock absorbers, and an additional frame. The disadvantage of the device [3] is the use of unbalances that create simple radial vibrations in all directions in the same plane.

However, only vertical vibrations up and down are useful for compaction of materials. In this case, horizontal disturbances are useless, because have negative effects on the tractor and on the operator.

The objective of the invention is to use directional vibration exciters, which eliminate the negative qualities of simple vibration exciters.

The technical result of the invention is achieved in that the vibration exciters are made of two unbalances and are mounted on an additional frame on the left and right along the length of the beam of the additional frame, which create lateral vibrations of the vibratory roll.

The object of the device is solved due to the fact that the self-propelled vibratory roller contains a self-propelled chassis, a shaft, unbalances, an unbalance drive motor, an additional vertical vibratory roll frame, rolling bearings, according to the invention an additional vertical vibratory roll frame is connected to the vibratory shaft by rolling bearings, the vibration exciters are mounted on the left and right the ends of the additional frame, the drive of one vibration exciter is made by a hydraulic motor, the second by a driveshaft, with the impact on the material are transferred in the vertical direction at left and right ends vibrovaltsa in antiphase with the angle discrepancy of 180 °.

The essence of the operation of the self-propelled vibratory roller device is illustrated by the drawings in FIG. 1, FIG. 6.

In FIG. 1 shows a general view of a self-propelled vibratory roller with vibration exciters; in FIG. 2 shows a section of a vibrating roll with a vertical plane; in FIG. 3, the vibratory roll is cut in a horizontal plane; in FIG. 4 shows a vibration exciter (side view); in FIG. 5 shows a sectional exciter in a horizontal plane; in FIG. 6 shows a diagram of the mechanical drive of the right and left vibration exciters.

In FIG. 1 - FIG. 6 self-propelled vibration roller contains: 1 - self-propelled chassis; 2 - a vibratory roll frame; 3 - vibrodrum; 4 - an additional vibratory roll frame; 5, 6 - respectively, the left and right body of the vibration exciter; 7 - unbalances; 8 - matching gear; 9 - unbalance shaft; 10 - hydraulic motor; 11 - gear drive the translational motion of the vibratory roller; 12 - rubber-metal shock absorbers of the translational motion drive of the vibratory roller; 13 - vibratory roll shaft; 14, 15 - pillow block bearings of the vibratory roll shaft; 16, 17 - the hub shaft of the vibratory roll; 18 - a brake pulley; 19, 20 - rubber-metal shock absorbers; 21 - driveshaft drive shaft of the exciter (Fig. 2, Fig. 6).

Self-propelled vibratory roller works as follows.

With the forward movement of the self-propelled vibratory roller, the drive of the vibration exciters 5, 6 comes from the hydraulic motor 10 through the driveshaft 21. The vibration exciters 5, 6 create an exciting effect in the form of a moment of a pair of vertical forces of the left and right vibration exciters.

In FIG. 2 from the left exciter, the disturbing effect is directed down, and from the right up. As a result of the action of this pair of forces, a triangular diagram of normal stresses arises under the vibratory roller with a maximum on the left side of the vibratory roll.

Thanks to the triangular stress diagram, a more active interaction of the vibratory roll with the material being compacted occurs. In the second phase of vibration, the direction of the exciting pair of forces is reversed. A diagram of triangular stresses appears at the right edge of the vibratory roll.

Thus, in the present invention, a new type of interaction of the vibratory roll with the material being compacted is realized, which is more effective in comparison with the known technical solutions.

Claims (1)

A self-propelled vibratory roller containing a base chassis, a vibratory roll frame, a vibratory roll, a shaft, vibration exciters, an unbalance drive hydraulic motor, an additional vertical vibratory roll frame, rolling bearings, characterized in that the additional vertical frame is connected to the vibratory roll shaft by rolling bearings, vertical vibration exciters are mounted with a hydraulic motor drive on the left and right ends of the additional frame for acting on the material being compacted in a vertical direction at the left and right ends of the vibratory roll in out of phase with a mismatch angle of 180 ° and are interconnected by a driveshaft.

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