SU924285A1 - Hydraulic drive for ripper - Google Patents

Description

The invention relates to a hydraulic excavation equipment, namely, rippers for the development of frozen and collapsible rocky soils.

Known hydraulic ripper containing a pump, distributor, power cylinders, valves, tank, filter and hydraulic Γΐ].

Closest to the proposed is a hydraulic drive ripper, containing a pump installation, ¹ ku, hydraulic cylinders of adaptation and lifting-lowering of the working body with a hydraulic distributor and hydraulic lines [2].

The disadvantage of this hydraulic drive lies in the fact that its design does not allow combining the operation, raising the lowering of the loosening equipment and adjusting the parameters of the working body to adapt the equipment to the working conditions: changing the loosening angle and pitch of the teeth, making the side removal of the teeth, etc.

2

The aim of the invention is to improve the performance of the ripper with adaptable working equipment.

This goal is achieved by the fact that the drive is equipped with an additional valve, the OR check valve, and the adaptation hydraulic cylinders are made hydraulically controlled, while the hydraulic distributor of the lifting and lowering cylinders of the working body is connected to the hydraulic distributor lines, and the return valve of the adaptation hydraulic cylinders is installed. lines of the hydrodistributor of hydraulic cylinders of raising lowering of working body.

FIG. 1 shows the cultivator by the lifting and lowering hydraulic cylinders and the adaptation of the working body; in fig. 2 hydraulic drive scheme ripper.

3,92428

The proposed device consists

from pumps 1 and 2, from which the working fluid is directed to the valves 3 and 4,. and further to the lifting cylinders 5 and 6, 7, 8 - adaptations of the working body. The working fluid is drained from the hydraulic cylinders through the distributor 3 and 4, filter A into the tank '10. The hydraulic circuit includes: valve OR 11, hydraulic distributor 10 tel 12, control valve 4, hydraulic locks 13 and 14, check valve 15, unloading the lines of hydraulic cylinders 5 and 6, valve 16 safety valve 15 1 ?;

The proposed drive ripper works as follows.

The working fluid from the tank 10 flows through the valve 16 to the pump 1, 20

from it to the distributor 3, from which goes to the hydraulic cylinders 5 "

eight. '

In the neutral position of the valve of the distributor 3, the working fluid is discharged through the overflow valve of the distributor 3 and further through the filter 9 into the tank 10.

From the pump 2, the working fluid flows to the distributor 4, from which it flows to the hydraulic cylinders 7 and 8. Parallel to the pump 2, a safety valve 17 is installed, which unloads the pump at maximum pressure.

With separate control operator ₃₅ tions lifting-lowering working organ and adaptation distributor 12 is in the neutral position and the working fluid is alternately supplied through a distributor 3 to ₄₀ gidrotsilind- frames 5 and 6 or 7 'and 8 when the corresponding spool, providing lifting and lowering working body or its adaptation.

"

; To combine the operation of the deepening * ^{5 of the} ripper and the adaptation of the working body, switch the spool of the distributor 3 to control the hydraulic cylinders 5 and 6 of the depth of the ripper in one of the hydraulic lines ⁵⁰

there is pressure ’acting on the distributor 12 'when the distributor 12 is turned on, pressure is applied to the distributor 4, which takes one of the working positions, and the working fluid from the pump 2 is directed through the distributor 4 to the hydraulic cylinders 7 and 8 of the working body adaptation. With

5 4

installing the valve of the hydraulic distributor 3 to the neutral position; residual pressure in the pressure lines is discharged through the valve OR 11, the check valve 15 and the overflow valve of the distributor 3, while the valve of the distributor 4 is set to the neutral position and the supply of working fluid to the hydraulic cylinders 7 and 8 is stopped.

To protect the pressure lines from the effects of reactive pressures that occur in the cylinders 5 and 6 when the valve 3 is locked, hydraulic locks 13 and 14 are installed.

In the working position when the spools 3 are turned on, the pressure of the pump 1 closes the check valve 15. due to different pressures and thus eliminates the influence. effect of pump 1 on hydraulic cylinders 5 and

6

Thus, the combination of operations is carried out when managing one spool valve 3.

The advantage of the proposed device is the combination of adaptation operations with the raising and lowering of the working body. As a result of this, pova *. ripper productivity, when developing soil with different physicomechanical properties.

Claims (1)

Claim Hydraulic drive of the ripper including pumping unit, hydraulic cylinders of adaptation and raising-lowering of the working body with hydraulic distributors and hydraulic lines, characterized in that, in order to increase the productivity of the ripper, it is equipped with an additional hydraulic distributor, non-return valve OR, and the hydraulic distributor of hydraulic cylinders of adaptation is designed hydraulically controlled, while the hydraulic hydraulic distributor is equipped with hydraulic hydraulic distributor. tel hydraulic cylinders lifting and lowering the working body communicated with the lines of hydraulic control hydraulic valve hydrocyles The adaptation is carried out through an additional hydraulic distributor, and the check valve and the OR valve are installed in the hydraulic hydraulic lines of the hydraulic cylinders for raising and lowering the working element. 92 ^ + 285 6