SU1461836A1 - Apparatus for ripping frozen soil - Google Patents

Abstract

The invention relates to a device for loosening frozen soils, in particular to screw-type devices. The goal is to reduce the power consumption of loosening by reducing the resistance forces of the soil during the forced torsional vibrations of the wedges around its own axis. The device includes a housing 1, a driving rod (PN) 2 with a screw tip 3 connected to a driving mechanism 4. On the housing 1, free rotating loosening wedges (K) 5 are installed. The latter are made in the form of pointed plates with a concave curved contour. In the upper part of the PN 2, eccentric bushings 6 are fixed with a common eccentricity. The rods 7 are attached to the sleeves 6 at one end, which are connected with the tail lever rigidly mounted on K 5 with the other end. With the aid of the drive mechanism 4, the PSh 2 and the screw tip 2 are screwed into the frozen ground, while the soil is pressed into the soil 5. Rotational motion With the help of eccentric sleeves 6, PSH 2 is converted into oscillatory motion of shatuns 7. From them, oscillatory motion is transmitted through Kantik levers to K 5, which during the whole process of immersion in the ground make oppositely directed torsional oscillations around its own axis. Alternately affecting the ground with one or the other with its edge, K 5 facilitates the process of digging. By increasing the transverse profile K 5, the amplitude of oscillation of the rib is increased. As a result, the moment of application of the load to the ground increases, which reduces the power consumption of loosening. 2 Il. i cl

Description

The invention relates to devices for loosening frozen soils, in particular to screw devices.

The aim of the invention is to reduce the energy intensity of cultivation by reducing the resistance forces of the soil during forced torsional vibrations of the wedges around its own axis.

In FIG. 1 shows a device for loosening frozen soil, front view; in FIG. 2 is a section AA in FIG. 1.

The device comprises a housing 1, a drive rod 2 with a screw tip 3, connected to the drive mechanism 4. The loosening wedges 5 are mounted on the housing with the possibility of free rotation around its own axis. In the upper part of the drive rod 2 fixed eccentric sleeve 6 with a common eccentricity. The bushings are fitted with one end of the connecting rods 7, and the other end are connected to the pendulum arm 8, rigidly connected to the wedges 5.

A device for loosening the soil works as follows.

Using the drive mechanism 4, the rod 2 with a screw tip 3 is screwed into frozen ground. Under the action of the axial force developed by the screw tip, wedges are caught in the soil 5. When the rod 2 is rotated, its rotational movement is converted into the oscillatory movement of the connecting rods 7 by means of eccentric bushings 6. From the connecting rods 7, the movement is transmitted using the pendulum arms 8 to the wedges 5, which throughout the entire process of immersion in the soil, they perform torsional vibrations around their own axis in antiphase relative to each other.

Opposite directional torsional vibrations on the wedges exclude the possibility of transmitting vibrations to the equipment body 1 and to the base machine. Performing 5 torsional vibrations, the wedge 5 alternately affects the soil with one or the other with its edge, thereby facilitating the process of its penetration into the soil.

When a certain immersion depth is reached due to an increase in the transverse 1θ profile of the wedge in its upper part, the amplitude of oscillations of the wedge edge increases, the shoulder of the application of force to the ground increases, and as a result, the moment of application of the load to the soil increases, which exceeds the soil ultimate strength and leads to it separation (cleavage) from the main array. After cleaving the soil, the work cycle is repeated.

Claims (1)

Claim A device for loosening frozen soils, including a housing, a drive rod with a screw tip and wedges attached to the housing, characterized in that 25, in order to reduce the energy intensity of loosening by reducing the soil resistance forces during forced torsional vibrations of the wedges around its own axis, wedges on the case pivotally mounted with the possibility of their free rotation and 39 interaction with the drive rod by means of connecting rods and a sleeve mounted with an eccentricity on the drive rod, and the connecting rods are connected with wedges by means of pendulum levers rigidly fixed on the wedges, and the wedges are made in the form of 'pointed plates with a concave curved contour.