SU90778A1 - Tractor scraper drag - Google Patents

Description

In the well-known tractor scrapers, the scraper's bucket is transferred from the cutting position and soil loading to the transport position by a tractor driver using a special tool, which complicates the design of the mechanism and its management.

In the proposed construction of a tractor scraping truck, this disadvantage is eliminated by the fact that the bucket is automatically transferred from the loading to the transport position after filling with soil, due to the weight of the Soil filling the bucket.

A mechanism consisting of a lever acting through the lock roller against the drawbar can be used to unload the soil.

To adjust the cutting angle of the bucket along its height, additional holes may be located to connect it to the frame.

In order to control the thickness of the soil bedding during unloading, stops on the side walls of the bucket can be applied with the possibility of their rearrangement.

FIG. 1 shows a tractor scraper, side view; pas figs. 2 - top view; in fig. 3 - the position of the bucket during unloading.

The wire scraper consists of two main parts: a bucket and a traction frame.

Welded ladle of sheet steel. A knife 1 is fastened in the front, bottom part of the bucket. Outside the bucket, the corners and plates 2 are welded to form the bucket frame. For greater rigidity of the bucket, braces 3 are placed from the corner.

Steel sheets are welded to the outside and inside of the bucket to enhance the swivel of the bucket to the frame. The bucket with the frame is connected with fingers 5, which pass through the sleeves 6 of the side walls.

No. -90778-2 -

To change the cutting angle of the knife, on which the full filling of the bucket depends, there are three holes in height to connect the frame with the bucket.

A sheet is welded to the bottom of the bucket, which protects the bucket from wear and increases its rigidity.

Earrings 7 are fixed to the side walls of the bucket for unloading cable 8 and stops 9 for limiting the rotation of the bucket during unloading.

T beam frame 10 is welded from channels.

The front part of the draft frame is welded from channels in the form of a box 11, B which includes a movable drawbar 12. The drawbar injecting into the box 11 is limited to the stop 13. The ring of the stand 14 of the drawbar 12 is connected by a discharge cable to the earrings 7 of the bucket.

The stiffness of the frame is enhanced by the crossbeam 15 and gussets 16.

The lower and upper parts of the rear wall of the bucket are set at an angle to the horizontal to automatically transfer the bucket from the loading position after its filling to the transport position due to the weight of the soil loaded into the bucket.

The hitch consists of a rack 14 (Fig. 1) and an earring 17 fixed by a finger in the rack.

The control mechanism is mounted on a traction frame and consists of a movable drawbar 12, an emphasis 18, a lock 19, and a lever 20.

During the filling of the bucket, the drawbar 12 is fully pushed into the box 11 t of the boom frame and the stop 18 is held by the lock roller 19, preventing the drawbar from being pushed forward. In this position, the tongue is digging and filling the bucket and transporting the soil in it to the place of unloading.

The scraper is moved to the place of unloading by dragging it across the ground.

The unloading of the soil is carried out in the following manner (Fig. 3). The tractor driver moves the upper end of the lever 20 forward from the place of operation of the tractor 21, while with its lower end the lever raises the roller of the lock 19, releases the stop 18 and allows the tongue 12 to move forward.

When moving the drawbar 1-2 forward, the tractor force through the cable 8 tilts the bucket forward until the stops 9 are placed on the frame. At the same time, the rear end of the t-frame will lower and be on skis 22.

Upon further advancement of the scraper, the ground 23 of the bucket will pass into the gap formed between the edge of the knife and the ground surface. The thickness of the soil layer to be filled can be controlled by the position of the stop 9 on the side wall.

After the bucket is unloaded, the transportation of the empty scraper to the site of the ground collection is done on skis 22 with the bucket tilted forward.

At the place of loading, the tractor driver must move the tractor 12 back into the box 11 to the end by moving the tractor. In this case, the bucket will again be in the loading position, and the drawbar with its stop 18 will hook on the roller of the lock 19.

After this, the scraper cycle is repeated.

The proposed tractor scraper is intended for digging loosened soil, transporting it at a distance of 70-100 m and unloading the soil in a uniform layer of 15-25 cm.

Claims (4)

1. A tractor scraper drag, characterized in that its bucket is pivotally connected to a frame provided with runners, and the lower and upper parts of its rear wall are angled to the horizontal in order to automatically dig in the bucket after filling it with the pressure of the soil filling the bucket. 2. The form of the scraper according to claim 1, characterized in that a mechanism consisting of a lever acting through the lock roller on the drawbar support is applied to unload the soil. 3. The form for making the scraper according to claim 1, characterized in that, in order to adjust the cutting angle of the bucket, additional holes are arranged along its height for connecting it to the frame. 4. The form of the scraper on the PP. 1 and 2, characterized in that, in order to control the thickness of the soil bedding during unloading, the stops on the side walls of the ladle are adapted to be replaced. Subject invention 23 3 FIG. 2