SU823507A1 - Bulldozer equipment - Google Patents

Description

(54) BULLDOZER EQUIPMENT

one

The invention relates to road building machines, namely, bulldozer type earthmoving machines. .

Known dozer equipment, including the blade, equipped with a medium protruding knife 1.

A disadvantage of the dozer equipment with a protruding middle knife is the impossibility of converting it from one type of blade to another, for example to a blade with a double knife, which is sometimes required depending on the physical and mechanical characteristics of the developed soils.

The closest to the proposed technical entity is the working equipment of a loader earthmoving machinery, the distinguishing feature of which is the presence in front of the main bucket of a hinged jaw width equal to the width of the bucket with a cutting edge in the form of teeth located in the lower part 2 .

The disadvantage of the equipment is the impossibility of changing the knife system depending on the physical-mechanical

condition of the soil, which reduces its operational capabilities.

The purpose of the invention is to expand the operational capabilities of the equipment.

This goal is achieved by the fact that the anterior jaw is provided with stops articulated with it for engagement with the blades of the blade and the hydraulic cylinders for turning the stops, the anterior jaw blade being made with a length of 0.2 -

0.3 and the length of the blade fixed on the jaw with the ability to lean in one of the extreme positions of the upper part of its rear surface on the lower part of the working surface of the blade knife.

FIG. 1 shows dozer equipment in perspective view, general view; in fig. 2 - side view of the equipment, when the cutting edge of the front jaw is brought forward and located on one

level with the main cutting edge of the blade; in fig. 3 is a side view of the equipment when the cutting edge of the jaw rests on the main cutting edge of the blade and forms a protruding middle knife.

The bulldozer equipment consists of a blade 1 with a rigidity box 2 and a cutting knife 3, pushing bars 4, a narrow front jaw 5, which is pivotally attached to brackets 6 mounted on the blade 1, provided in the lower part with a cutting edge 7 and controlled by hydraulic cylinders 8, which mounted on the rear side of the blade 1, and on the side walls of the jaw 5 are pivotally mounted stops 9, to which the rods of the hydraulic cylinders 10 of the control body are also pivotally connected and fixed to the side walls of the jaw 5.

When the working fluid is supplied to the hydraulic cylinders 8, the jaws 5 are rotated relative to the hinge attachment to the brackets 6, and the cutting edge 7 is flush with the cutting blades 3 of the dumping surface 1, only a few are moved forward (Fig. 2), which reduces energy intensity the digging process, as the cutting process is partially separated from the prism-forming process. This design of the bulldozer blade contributes to improving the performance of earth-moving and planning work by increasing the volume of the drag prism due to the reduction of soil loss to the side rollers due to the presence of a narrow front jaw, carried forward. To unload the hydraulic cylinders 8, when the cutting edge 7 is brought forward, by means of hydraulic cylinders 10, the stops 9 are rotated counterclockwise relative to the hinge attached to the side walls of the front jaw 5 and touch the brackets 6, which ensures rigidity of the cylinders 8.

When the working fluid is supplied to the piston cavities of the hydraulic cylinders 8, the jaw 5 is rotated relative to the hinge of attachment to the brackets 6 counterclockwise and the cutting edge 7 is installed below the cutting knives 3, resting on them (Fig. 3). With such a position of the cutting edge 7 of the blade system, the blade system becomes stepped, which helps to reduce the energy intensity of the digging process, and it is also possible to develop stronger soils by increasing the specific pressure arising on the protruding cutting edge 7.

The maximum efficiency value can be obtained when the width of the cutting edge of the front jaw is 0.2-0.3 of the width of the blade of the bulldozer. In addition, the hydraulic control of the front

Jaw 5 can be used as a gripper for bulldozing such activities as felling trees and clearing small trees from the area, removing stumps and dimensional stones, boulders on the surface or

partially in the upper part of the soil (Fig. 3). At the same time, the object being removed from the site to be cleaned is pressed to the blade 1 with the help of a hydraulically controlled jaw and transported to the required distance;

The presence of an additional jaw with a knife, rotation cylinders and stops expands the operational capabilities of the dozer equipment, which leads to an increase in the operating efficiency of the dozer.

Claims (2)

1. Balovnev V. I., et al. Determination of the efficiency and rational parameters of a protruding middle knife to the blade of a bulldozer by the method of mathematical modeling. Increased efficiency in the use of road machines. Proceedings 5 MADI, 1977, no. 118, p. 107, fig. one. 2. Zabegalov G. V. and others. New construction loaders of the company “Caterpillar tractor. TsNIITESTROYMASH, 1973, p. 46, fig. 18 (prototype). g / g.2 /// sy z z / y FI.5