SU685745A1 - Road roller - Google Patents

Description

one

The invention relates to devices for compacting structural elements of pavements, namely, rollers for compacting both static and vibratory pavements used in construction and other engineering related fields.

Famous road rollers containing the chassis in the form of a frame with rollers and a ballast device, made in the form of a cavity of ballast, formed in one of the rollers 1.

The closest technical solution to this invention is a road roller, comprising a chassis in the form of a frame with rollers, on which a ballast device is mounted in the form of a seal chamber, the open part facing the floor and communicated with a vacuum generating means 2.

A disadvantage of the known road rollers is the narrow range of control of the ballast forces, which is limited both by the capacity of the ballast device and the power and productivity of the vacuum generating means.

The purpose of the invention is to expand the range of generated ballast forces.

The goal is achieved in that in a road roller including a frame chassis with rollers, on which a ballast device is mounted in the form of a seal chamber, the open part facing the cover and communicated with a vacuum generating means, the chamber is made of communicating li telescopically connected between compartments, and the frame is a composite of two telescopic interconnected parts with a latch of their relative movement, each of the compartments of the camera rigidly 2o: - single — with one of the frame parts.

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Road kztsk cocTOi.T; j go shassl, ostsvu ksgoro O: o: t;

BY.YUL bc .i-i;.; /. ... i- {li - ..: ..,. .

with each; i3 kotor; -: gz,; a .:;. Compatriots of Os-Lugh. . for ll; 0 :: MciCTH 2

Claims (2)

Install BoD,;:. ..- j ciii-is of the roller (not shown) and cab 4 of the driver. On the front of the frame there is a hydraulic drive for turning the front drum 3 (not shown on the drawings). The mobility of the telescopic frame parts is ensured by the fact that the carrier beams 5 and 6 of the front part 1 and the nasunla beam 7 of the rear part 2 of the frame are provided with rolling bearings 8 installed in the respective guides, for example, the supports 8 of the beams 5 and 6 part 2 of the frame, and the support 8 of the beam 7 is swept over the surface of the beam 5 of the front part 1. The chamber of the ballast device consists of two communicating telescopic compartments 10 and 11, the first of which is connected with the front part 1 of the frame and the second with the rear part 2. Between station A seal 12 is fastened in the compartments of the compartments, fastened to the rear compartment 11. A seal 13 is installed along the front open part of both compartments, which is a rubber band. The cavity of the chamber is connected to a means for creating a vacuum (not shown in the drawings). The frame has symmetrically placed telescopic clamps 14 and 15, the first of which is connected with the front part of the frame, the author with the rear part 2. Both clamps along their axes are provided with holes where the slides 16 are inserted. The road roller works as follows. After leveling the asphalt-concrete mixture along the road base, the roller makes a series of passes to pre-compact the mixture without putting the ballast device into operation. As the asphalt-concrete cools, the ballast device is turned on and a vacuum is created in the chamber, which causes excessive atmospheric pressure on the chamber, which is transmitted to the rollers, through the frame with which the chamber is connected. Upon reaching the maximum vacuum value, due to the technical possibilities of the means for creating a vacuum and its drive. Increase the chamber area, shed the vacuum in the latter, and remove the pins 16 from the openings of the beams 14 and 15, thus disconnecting both parts 1 and 2 of the frame. Then, brake in any way the front drum 3; The roller drive is activated and, by moving the rear part 2 of the chassis frame backward, the camera compartments 10 and 11 are moved apart by the required amount of additional space of the latter. The compartments are fixed in this position by pins 16, inserted again into the holes of the latches 14 and 15. In the described manner, the chamber area can be gradually increased further and then shifted to the transport position after the work is completed. Due to the ability to push the chamber, i.e., to increase its effective area, the ballast force increases significantly without increasing the degree of vacuum in the chamber. Claims Road roller, comprising a chassis in the form of a frame with rollers, on which a ballast device is mounted in the form of a seal chamber, the open part facing the floor and communicated with a vacuum generating means, characterized in that, in order to extend the range of the generated ballast forces, the chamber made of communicating and telescopically interconnected compartments, and the frame is a composite of two telescopically interconnected parts with a latch of their relative movement, each one and The compartments of the chamber are rigidly connected to one of the frame parts. Sources of information taken into account during the examination 1. “Road Machines, ed. N. Ya. Kharkhuty. L., “Mashchinostroenie, 2. USSR author's certificate number 510558, cl. E 01 C 19/26, 1969.