RU2647537C1 - Vibrating self-propelled roller - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: invention relates to construction, namely to road rollers for soil compaction and materials during the construction of roads and aerodromes. Vibrating self-propelled roller contains a front half-frame, vibrovalets, shaft of vibrovalets, eccentric masses, hydraulic motor drive shaft eccentric masses, according to the invention, the eccentric masses are made in the form of a system of three eccentric mass installed on the shaft of the vibrovalets. Lateral eseccentric mass are established at the butt ends of the vibrovalets and are oriented to work in anti phase to each other, the average eccentric mass is located on the shaft in the middle of the vibrovalets and is oriented to work with phase mismatch 90° relative to other eccentric masses.

EFFECT: increase in productivity due to the creation of the construction of the vibrovalets using vertical and transverse vibrations of the vibrovalets.

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Description

The invention relates to the construction, in particular, to road rollers for compaction of soils and materials in the construction of roads and airfields.

Known vibration self-propelled skating rink with a working vibratory roller mounted on the front frame of the skating rink using rubber-metal shock absorbers (see book: Construction vehicles: reference book: 2 tons T. 1. Machines for the construction of industrial, civil structures and roads / A.V. Rannev, V.F. Korelin, A.V. Zhavoronkov and others; under the general editorship of E.N. Kuzin. - M .: Mechanical Engineering, 1991. - S. 165-166 [1].

The front frame of the vibratory roller through the hinge is articulated with the rear frame. Hydraulic control cylinders provide relative rotation of the half-frames up to 35 °. Unbalanced loads are fixed on the shaft inside the vibratory roll - unbalances, which are rotated by a hydraulic motor using a V-belt transmission and a cardan coupling.

The considered analogue [1] has the following disadvantages. Low productivity due to insufficient vibration on the material to be sealed.

The principle of operation of a modern vibratory roll is based on the use of two working phases: the movement of the vibratory roll up and the movement down. In this case, the working phase is the downward movement of the vibratory roll during compaction of the material, and the upward movement of the vibratory roll is idle. Therefore, only half of the working time is used to perform the useful work of compaction of the material.

A modern vibratory roll provides insufficient impact on the material being compacted due to the use of a single unbalance of a single action or a system of parallel unbalances of a similar action.

Known vibratory rollers that implements the device [see, for example, patent RU No. 2301861 IPC Е01С 19/28, published June 27, 2007, Bull. No. 18] [2], which contains the front half-frame, a vibro-roll divided into three sections, which implements a difficult mode of operation. The extreme sections and the middle sections work in antiphase, i.e. if the middle section moves down, then the extreme sections move up. Imbalances in this design are sections of the vibratory roll. The disadvantage of the device according to the patent [2] is the complex design of the sectional vibratory roll.

The closest in technical essence to the proposed device is a patent [see, for example, patent RU No. 2405881 C1, IPC E01 19/28, published December 10, 2010, Bull. No. 34] [3], containing a vibratory roll made of two sections: left and right, operating in antiphase and creating a transverse vibration of the vibratory roll. In this device according to the patent [3], transverse vibration is realized during the rotation of the vibratory drum sections using a hydraulic motor and V-belt transmission. The imbalances in the device [3] are two sections of the vibratory drum operating in antiphase (ϕ = 180 °).

The disadvantage of the prototype in the device [3] is the complex design of a two-section vibratory roll.

The objective of the device vibratory self-propelled roller is the use of a system of three unbalances that implement longitudinal and transverse vibrations of the vibratory roll.

The technical result of the invention is to create a design that implements complex vibration of the vibratory roll.

The object of the invention is solved in that a self-propelled vibration roller comprising a front half frame, a vibratory roll, a vibratory roll shaft, an unbalance; according to the invention, the unbalance is made in the form of a system of three unbalances mounted on the vibratory roll shaft, two unbalances are mounted on the shaft in phase at the ends of the vibratory roll, and the third unbalance is mounted on the shaft in the middle of the vibratory roll with 90 ° phase mismatch to the lateral unbalances.

The essence of the invention of a vibrating self-propelled roller is that the compaction of materials and soils is accomplished by vertical longitudinal vibration, as in a conventional roller using an average unbalance and the additional compaction of the material is accomplished by lateral unbalances creating a transverse vibration of the vibratory roll.

The system of three unbalances increases the duration of vibration on the material being compacted in each vibration period and increases the performance of the vibratory roller.

The invention is illustrated by drawings, where in FIG. 1 shows a general view of a vibrating self-propelled roller, FIG. 2 - vibrodoll in the context.

The vibrating self-propelled skating rink contains: 1 - the front half-frame of the vibratory roll; 2 - rear motor frame with engine and running gear; 3 - vibrodrum; 4 - vibratory roll shaft; 5, 6 - lateral unbalances, 7 - average unbalance; 8 - additional load of the vibratory roll; 9 - frame of the load of the vibratory roll; 10 - a hydraulic motor for rotating the vibratory roll; 11 - a gear wheel of a drive of rotation of a vibratory roll; 12 - a hydraulic motor for rotating the shaft of the vibratory roll; 13 - rubber-metal shock absorbers of the vibro-roll suspension on the front half-frame; 14 - a leading gear of a drive of rotation of a vibratory roll; 15 - connecting cardan coupling.

Vibrating self-propelled roller operates as follows. With the forward movement of the roller vibrator 3 receives rotation from the hydraulic motor 10 through the drive gear 14, the ring gear 11 and rubber-metal shock absorbers 13.

Thus, when the roller moves, the vibro roll is mixed in the leading mode. The rotation of the vibrating roll shaft 4 and the unbalances 5, 6, 7 is carried out by a hydraulic motor 12 through a cardan coupling 15. In the position shown in FIG. 2, the side of the unbalance 5, 6 form a pair of exciting forces F ₅ and F _6, which create lateral vibration vibrovaltsa 3.

In FIG. 2 the vibratory roll deforms the material with the left edge of the vibratory roll and creates a deformed state of a triangular shape. In the next half-turn, the unbalances change their position to the opposite. There is a pair of forces F ₅ , F _{6 in the} opposite direction, acting clockwise. A triangular diagram of a stress-strain state occurs at the right end of the vibratory roll. At the same time, in the period between these cycles with a phase mismatch of 90 °, the average vibrator 7 creates periodic stress-strain states of a rectangular shape. The considered mode of operation of the proposed invention improves the performance of the vibratory roller during compaction of materials and soils. The proposed invention solves the technical problem of using vertical longitudinal vibration in combination with the transverse vibration of the vibratory roll to increase the performance of the vibratory roller.

Claims (1)

Vibrating self-propelled skating rink containing front half frame, vibrodrum, shaft, unbalances, unbalance drive hydraulic motor; characterized in that the unbalances are made in the form of a system of three unbalances mounted on the shaft, while the lateral unbalances are installed at the ends of the vibratory roll and are oriented to work in antiphase to each other; the average unbalance is located in the middle of the vibratory roll and is oriented to work with a 90 ° phase mismatch with respect to other unbalances.

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