SU57567A1 - Site planning machine - Google Patents

Description

The construction of landing sites for airplanes and similar platforms falls into a number of individual and by the nature of the various categories of work performed by various means. In general, these works are reduced to the layout of the terrain and to the formation of a soil surface that satisfies the relevant technical conditions.

The first category of work can be carried out by various road masks, but none of the known road machines can satisfy fully the requirements in terms of speed of work.

For example, an excavator can work efficiently only if the amount of earthworks is concentrated in a small area in the form of a powerful array. During planning works, the objects of excavation are scattered. In addition, during excavation, it is necessary to take the soil by special transport, and for leveling the soil at the planned site, devices and mechanisms are needed for this purpose.

The grader makes only cutting of the soil, leaving it in place, therefore, in this case it is necessary to have a number of means for transporting soil, and for loading and unloading it.

The excavator grader, although it itself produces a load of cut soil, but it is not very suitable for planning areas because of the narrow grip.

Tractor shovels have very low productivity and are unsuitable for performing work in a short time.

Scraper devices are also poorly productive due to the frequent transfer of support blocks and due to reverse idle runs. The proposed machine is designed to eliminate the drawbacks of the known earth machines. It can make the layout of the area in the shortest possible time, does not require transport for the transportation of cut soil, and cut the soil, puts it into the excavations of the area, creating a flat platform.

A feature of this machine is an endless chain, equipped with a number of special scraper shovels, and this chain is so mounted that both its branches are working.

The drawing shows an example I for an embodiment of the invention, with FIG. 1 shows the installation in front view; FIG. 2 is a plan view; FIG. 3 is a front view of a scraper shovel; FIG. 4 - her plan view; FIG. 5 is a longitudinal section of a shovel.

The leveling machine consists of an endless chain / on which the scraper shovels 2 are fastened at a certain distance. The chain goes around four blocks, of which two are drive ones. These blocks are mounted on 3 to 4 brackets attached to the frames of two tractors or tanks 5 and 6.

The blocks have vertical rotation axes such that both branches are located in the same horizontal plane.

The scraper shovel has the shape of a triangle in the plan (Fig. 4) and is formed by two knives installed at an angle to each other 7. The lower edges of the knives are bent inward of the shovel. On top of the scraper shovel is covered with a sheet with stiffening ribs.

When operating, both tractors with mounted chains and scoop shovels have relatively slow forward movements; the distance between the tractors determines the width of the planned lane; It can be different depending on the nature of the treated soil. The chain moves in the direction indicated by arrows a, a in the drawing at a speed of about 7 meters per second. The chain is tensioned as follows: tractor 5, carrying the drive and more heavy, moves in the chosen direction. Tractor 6 selects the direction somewhat deviated from parallel to the first (Fig. 2). The transverse component of the displacement causes the second tractor to pull the chain; after the maximum tension, the second tractor moves progressively with transverse sliding friction on the ground.

Tension chain presses attached scraper shovels to

ground on convex ground and pulls away on the grooves. At the convex places at the first moment, the shovel makes a scoop of the soil, then transports it to the recess, where the chain pulls up the shovel body and thereby automatically unloads it. If the surface does not have grooves and protuberances, then the filled scraper shovels slide along the ground without scooping it and not unloading it.

The shovels move sequentially one after the other, sequentially automatically performing operations, excavating, scraping and unloading in accordance with the profile, leveling it.

Unless the performance of the machine provides layouts in a single pass, this is done in several passes.

As the machine aligns the profile between the tractors, the surface remains in the same condition at the places where the tractors themselves pass. To obtain wide areas, a parallel passage is necessary, the machines should be made by overlapping the width covered to half.

The planning machine makes it possible to quickly and without much preparation by simple means to build a landing pad that can be widely used in. wartime conditions.

The subject matter of the invention.

Claims (2)

1. A site leveling machine consisting of two parallel moving motor carts supporting an endless dredging chain, characterized in that both branches of the chain are located in a common horizontal plane and are equipped with several scraper shovels. 2. The form of the machine according to claim 1, characterized in that each scraper shovel is formed by two knives set at an angle to each other and bent inward. to the author's testimony of IG Macheret and M. S. Zolotar on № 57567 Fy .  frrrr