SU998679A1 - Soil-loosening machine - Google Patents

Description

one

The invention relates to earthmoving machinery, and more specifically to loosening units based on tractors.

Known ripper, including the base machine and working equipment with a working body in the form of a tooth with a tip 1.

The disadvantage of this ripper is heavy loads in the equipment elements.

A ripper is also known, which includes a base machine, a parallelogram suspension with lower rods and upper rods, made in the form of hydraulic cylinders for changing the angle of the ripper, a working beam with a working body, a body and hydraulic cylinders for deepening, hinged to the supporting frame 2.

The disadvantage of this ripper is large reactive pressures in the hydraulic cylinders, which reduces reliability.

The purpose of the invention is to improve the reliability of the ripper by reducing the pressure in the control hydraulic cylinders.

This goal is achieved by the fact that a ripper including a base machine, a parallelogram suspension with lower and upper rods, a working beam with a working body

and the deepening cylinders, hinged to the support frame, are provided with a bracket mounted on the working beam from the base machine, one end of which is rigidly fixed to the working 5 beam, and the second is hinged to the vertical mounted depth cylinders.

In addition, the mounting of the hydraulic cylinders of the deepening and the lower t g to the support frame is made coaxial. The elements of the ripper are dependent

H, K + 0.5N, EI 1.6H,

where is HI

-distance from the hinge axis of attachment of the lower bars to the base frame to the base surface of the base machine;

To the shortest distance from the hinge axis of attachment of the lower link to the working beam to the support surface of the base machine; - maximum tooth depth;

H ti

-the length of the lower t gi.

FIG. 1 shows a ripper, side view; in fig. 2 - the same plan view.

The ripper contains a base machine 1, a parallelogram suspension formed

the lower 2 and upper 3 tons gmi, the support frame 4 and the working beam 5 of the stand 6 of the tooth 7. The top ti 3 are made in the form of hydraulic cylinders for changing the angle of the ripper, shimrically attached to the frame 4 of the machine and the working beam 5. The working beam 6 is equipped with a bracket 8, to the end of which is pivotally attached a hydraulic cylinder 9 of penetration, mounted in a vertical plane. The axis of its attachment is located on the axis of attachment of the lower m grams 2 to the support frame 4. The dimensions of the links of the parallelogram suspension, their orientation with respect to the base machine and the support surface are related by the HI K + 0.5N dependencies, and EI 1.6H, and the point The fastening of the lower link is as close as possible to the axis of the driving wheel of the machine, and the maximum length of the hydraulic cylinders 3 changes in the loosening angle with the stems extended is equal to the length of the lower plugs 2.

When loosening with sharp tips, the insertion of the working tool into the soil is carried out with small values of the cutting angle (35-40 °), which ensures rapid penetration. The tooth deepens when the rod of the hydrocylinder 9 is pulled in when the hydraulic cylinder rods 3 are fully extended and the loosening angle changes. This ensures the minimum value of the cutting angle over the entire depth, since the link links form a parallelogram. In the case of a strong tightening of the tip into the ground (which can lead to the locking of the working body and the tractor skidding), the rods of the hydraulic cylinders 3 partially change the angle of loosening. This increases the angle of loosening, and the depth of loosening decreases. The tip recessing path, directed backwards and upwards, allows the tool body to freely exit the stop zone.

When loosening the soil with worn tips, the depth of drainage is increased with large values of the angle of loosening (50-65 °), depending on the width and angle of wear. In this case, the rods of the hydraulic cylinders 3 are retracted, and the working body is deepened to a depth of 0.5-0.7N. Depth if necessary

loosening can be increased by pushing the rods of the hydraulic cylinders 3.

The use of the present invention improves the reliability and durability of the ripper by reducing the pressure in the control cylinders.

Claims (3)

1. A cultivator comprising a base machine, a parallelogram suspension with lower and upper thrusts, a working beam with a working body and bucking hydraulic cylinders pivotally connected to a support frame, characterized in that, in order to increase the reliability of the ripper operation by reducing the pressure in the hydraulic cylinders control, it is equipped with a bracket mounted on the working beam from the base machine, one end of which is rigidly fixed to the working beam, and the other is hingedly connected to vertically mounted hydraulic cylinders for deeper. 2. A shredder according to claim 1, characterized in that the fastening of the hydraulic cylinders of the burial and the lower grades to the supporting frame is made coaxial. 3. Ripper on the PP. 1 and 2, characterized in that the elements of the ripper are related H, K + 0.5H, P, –1.6H, where HI is the distance from the axis of the hinge of attachment of the lower bars to the base frame 0ДО of the base surface cars; K is the shortest distance from the hinge axis of attachment of the lower link to the working beam to the support surface of the base machine; 5H - the maximum depth of the tooth; t - the length of the lower t g. Sources of information taken into account in the examination of 0 1. USSR Copyright Certificate No. 375356, cl. E 02 F 5/30, 1970. 2. USSR author's certificate No. 159769, cl. E 02 F 5/30, 1963 (prototype).