RU31796U1 - Hydraulic bulldozer operating equipment - Google Patents

Abstract

The working equipment of a hydraulic bulldozer, including a blade, openers pivotally mounted on the side surfaces of the blade, hydraulic cylinders for controlling the blade and openers, characterized in that the openers are equipped with fork ends and are fixed at a height of 0.40-0.45 height of the blade, while the fork ends have length 0.25-0.30 from the height of the blade.

Description

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Utility Model MKI E 02F - 376

Hydraulic bulldozer operating equipment

The utility model relates to construction vehicles, namely to the working equipment of a hydraulic bulldozer used in earthworks, garbage collection, construction of pedestrian walkways, sidewalks, etc.

Known working equipment of a hydraulic bulldozer with cargo forks, which are attached to the working surface of the blade (Vasiliev A.A. Road machines: Textbook for road technical schools.-M., Mechanical Engineering, 1987, p. 69).

The presence of fork forks increases the versatility of the working equipment, but at the same time it increases the metal consumption, the complexity of the design and leads to the time spent on re-equipment when changing the type of work.

Also known is the working equipment of a hydraulic bulldozer with rotary openers, the rotation of which is insignificant; there is a hydraulic cylinder mounted on the upper stiffener box, the rod of which is pivotally connected to rotary openers (USSR author's certificate No. 106633, E 02F - 3/76 1982).

Such a system allows you to adjust the position of the openers depending on the type of soil, but at the same time, the metal consumption, complexity of the structure also increase, and there is no possibility of loading and unloading.

The aim of the proposal is to expand the functionality of bulldozer equipment while simplifying the design.

This is achieved by the fact that in the working equipment of a hydraulic bulldozer, including a blade, openers pivotally mounted on the side surfaces of the blade, hydraulic cylinders for controlling the blade and

openers, the openers are equipped with fork ends and fixed at a height of 0.40 - 0.45 of the height of the blade, while the fork ends have a length of 0.25 - 0.30 of the height of the blade.

The essence of the design is illustrated in the drawing, where Fig. 1 shows the working equipment of a hydraulic bulldozer with movable fork openers with a vertical arrangement of forks (side view); in FIG. 2 - the same front view.

The working equipment includes a blade 1, a hydraulic cylinder 2 for controlling the blade 1, openers 3 with fork ends 4, their hydraulic cylinders for control 5. On the lateral surfaces of the blade 1, holes 6 are placed, in which the fork openings are pivotally mounted. In the eyes 7 of the blade 1, the hydraulic cylinders 5 for controlling the openers 3 are strengthened, the rods of which are attached to the pins 8, rigidly mounted on the surface of the openers (Fig. 1,2).

The proposed utility model works as follows:

At the beginning of the work, the rods of the hydraulic cylinders 5 for controlling the fork openers are retracted, the fork openers 3 are located with the fork ends 4 vertically downward (FIG. 1). When moving the flaps of the hydraulic cylinder 2, the blade 1 is raised to a certain height, which allows you to rotate the flaps 3. Then the rods of the hydraulic cylinders 5 are extended. In this case, the fork flaps 3 rotate clockwise in the holes 6 to the horizontal position of the fork ends (Fig. 1 dashed line). The blade 1 by extending the rods of the hydraulic cylinders 2 is lowered next to the load. When the bulldozer moves to the load, the latter falls onto the fork ends of 4 openers 3. Then, when the hydraulic cylinder rods 2 are moved, the blade 1 is lifted to a certain height and the cargo is moved with the bulldozer to the place of laying. Further, when extending the rods of the hydraulic cylinders 5, the fork openers 3 are turned counterclockwise in the holes 6 until the load is unloaded. When retracting the hydraulic cylinder rods 5, the fork openers 3,

moving counterclockwise in the holes 6, they return to their original position, which ensures the operation of the bulldozer with openings according to the traditional pattern. In addition, the fork ends 4, being in a horizontal or slightly raised position, play the role of stops that prevent spontaneous deepening of the blade during the development of soils of groups II and III.

The dimensions of fork openers were determined from the conditions of the most efficient operation of bulldozer equipment with controlled fork openers. As a result of the studies, the length of the fork ends is determined in the ratio of 0.25 - 0.30 from the height of the blade, and the mounting height of the openers is respectively 0.40 - 0.45 of the height of the blade.

The proposed model of the working equipment of a hydraulic bulldozer, in comparison with the known one with the simplicity of design and control, has significantly greater functionality.

Organization - applicant: GNU VNIIIGiM them. A.N. Kostyakova

,, Director | Institute:

RAAS B.M.Kizyaev

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Claims (1)

The working equipment of a hydraulic bulldozer, including a blade, openers pivotally mounted on the side surfaces of the blade, hydraulic cylinders for controlling the blade and openers, characterized in that the openers are equipped with fork ends and are fixed at a height of 0.40-0.45 height of the blade, while the fork ends have length 0.25-0.30 from the height of the blade.