SU1384670A1 - Planing machine - Google Patents

Description

Isphetenie refers to earthmoving equipment, namely the planners.

The purpose of the invention is to reduce energy consumption and increase the performance of the scheduler.

The drawing shows the planner. The scheduler contains a base machine (not shown) and a bucket, including side walls 1, a roller blade 2 located at the back of the bucket, bending around with a flexible tape, and installed at the front, dumping bottom, the latter is made composite and consists of the front part 3 pivotally connected with side walls 1 by means of hinges 4, and a rear sliding part 5,

The sliding part 5 of the bottom is mounted on the front part 3 by means of guides and can be moved in the longitudinal direction by means of a control drive consisting of hydraulic cylinders 6 and 7, a hydraulic spacing separator 8 and a hydraulic accumulator 9. The hydraulic cylinder 6 moving the rear part of the bottom is connected by a housing with the front part of the bottom 3, and the stem with the extension part 5. The rear end of the bottom is pivotally connected to the rods of the hydraulic cylinders 7 of the bottom rotation (the drawing shows one hydraulic cylinder), which are pivotally connected to the side walls 1 mi.

The cavities of the hydraulic cylinder 7 of the turn of the bottom are connected by hydrolines to a four-position valve 8 connected by other branches to the pressure main, hydraulic tank and the retraction cavity of the hydraulic cylinder 6 moving the rear part of the bottom. The piston cavity of the hydraulic cylinder 6 is connected via valve 10 to the hydraulic accumulator 9, which is connected by one hydraulic line to the hydraulic tank through valve 11, and the other hydraulic line through the series-connected non-return valve 12 and the adjustable hydraulic valve 13 to the pressure main.

The scheduler works as follows.

In the initial position (see drawing), the control valve 8 takes a neutral position and covers all hydraulic lines. Hydroaccumulator 9 charged with a hydrovalve 13

five

0

five

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five

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to set the value of the pressure of the working fluid.

For planning works, the bottom is mounted with the help of hydraulic cylinders 7 and the hydraulic distributor 8 at the rear end above the ground surface. Then the control valve 8 is lowered to the lowest position. In the indicated position of the cavity, the lowering of the hydraulic cylinders 7 is connected to the hydraulic tank, and the lifting cavities - to the rod cavity of the hydraulic cylinder 6.

Since there is still no soil in the bucket, the pressure of the working fluid in the rod cavities of the hydraulic cylinders 7 and in the rod cavity of the hydraulic cylinder 6 connected to them through the hydraulic distributor 8 has a small value determined only by the bottom gravity force. Therefore, under the action of pressure from the hydroaccumulator 9, the hydraulic cylinder rod 6 pushes the movable rear part 5 of the bottom to the right, leaving a minimum gap between the bottom and the blade. When moving the planner bucket, the blade cuts off the ground elevations on the surface with its cutting part.

The cut soil moves along the flexible tape of the blade 2 upwards and is laid on the bottom of the bucket. The dumping of soil along the depressions of the planned surface is carried out through the gap between the bottom and the blade. With an increase in the mass of the soil in the bucket, the pressure of the working fluid in the rod end of the hydraulic cylinders 7 and in the rod cavity of the hydraulic cylinder 6 connected to them via the hydraulic valve 8 is therefore shifted by the piston 9 to overcome the pressure created by the hydroaccumulator 9, moving the rear end 5 bottom to the left and thereby increasing the gap between the data and the blade, and hence the amount of soil to be poured. The amount of soil to be poured is automatically set in accordance with the amount of soil dash in the ladle

The size of the gap between the bottom and the dump, with the same mass of soil in the air, can be changed in accordance with specific operating conditions, such as terrain, type and condition of the soil. This change is made by adjusting the pressure of the working fluid in the accumulator 9 by means of a hydraulic valve 13, a check valve 12 and a valve 11. During planning, the scientific research institute of the surface of the bottom is supported by hydraulic cylinders 7 above the surface of the planned soil. Therefore, it does not resist the movement of the scheduler.

Thus, when the scheduler is working by adjusting the parameters of the workflow (the amount of soil to be poured), the productivity is increased, and energy consumption is reduced by keeping the bottom above the surface of the planned soil.

Claims (1)

Invention Formula The scheduler, which includes the base machine, a bucket containing side walls, a roller blade placed at the back of the bucket, and bending around. flexible tape, and a bottom mounted in front of the blade, a front end hinged to the side walls that can be rotated in a vertical plane, and a bottom control actuator that differs By the fact that, in order to reduce energy consumption and increase the productivity of the scheduler, the bottom is made from the front part and the rear part installed on it by means of guides with the possibility of longitudinal movement, and the bottom control drive is made hydraulically QIM from the displacement hydraulic cylinder the rear part of the bottom, the hydraulic cylinders for turning the bottom, the hydraulic distributor and the hydraulic accumulator of the torus, the body and the rod of the hydraulic cylinder for moving the rear of the lower part of the bottom are pivotally connected to the front and rear parts of the bottom, and the rear part of the bottom, with the piston cavity of the hydraulic cylinder displacing the rear, the lower part of the bottom is in communication with the hydroaccumulator, and its rod cavity 5 and the hydrocylin cavities of the bucket turn are connected to the hydraulic distributor with the ability to communicate in one of its positions of the piston rod rod cavities of the hydraulic cylinders between 0 by itself, and the piston cavities of the hydraulic cylinders of the turn of the bottom - with the drain.