SU98201A1 - Soil probe - Google Patents

Description

Known soil probes with a device for measuring and recording soil resistance to indentation. Its core probe, which descends along the vertical carriage guide, has the disadvantage that the core probe having a considerable length undergoes a longitudinal bend when immersed in the soil.

In the proposed soil probe, this disadvantage is eliminated.

In order to prevent buckling of the probe, two chains connected to the carriage are used, which interact in opposite directions with the above-ground part of the probe pushed into the soil, with one of the chains provided with hooks to cover the trunnions of the other chain. The device recording the resistance of the soil is made in the form of a feather rigidly connected to the upper end of the probe, which rests on the carriage through the spring, and the drum concentric to the probe, which is turned by a branch of one of the chains passing through the carriage.

FIG. 1 shows a general view of the probe in the working position; in fig. 2 - middle part of the probe in an enlarged scale.

On a horizontal base / probe, two guide posts 2 with a movable carriage 3 are rigidly mounted, connected to each other in the upper part of the crossmember 4. On the cross beam 4 and the base / mounted two pairs of stars 5, bending around roller chains 6 and 7. Internal branches of these chains fixed with their ends above and below to the carriage 5. One of the upper sprockets 5, which is the leading one, has a handle 8 and is connected to the second upper sprocket 5 by the gear 9, which ensures the rotation of the upper sprockets 5 in the opposite direction.

The chain 7 in the lower parts has links 10 provided with hooks which engage with the pins of the corresponding links L of chain 6.

Thus, on the side of the carriage 3 to the base / internal branches of the chains 6 - l 7 are connected into one. A core probe 12 is inserted into the space between these connected branches of the chains.

In the upper part of the probe 12, a flange 13 is rigidly fixed, which is a support for the coil spring 14, abutting the upper end of the flange 15, which is freely mounted on the probe 12 and abuts the upper end of the drum 16 through the antifriction nipple 17.

the probe 12 is rotatable around its UN, but without the possibility of an axial displacement up and down relative to the recess 3. At the upper end of the probe 12, the feather 18 is rigidly attached.

The rotation of the drum 16 is performed by the friction bevel pair 19, the drive wheel of which is pressed against the idle branch of the chain 6, and the bevel gear pair 20, the driven wheel of which is freely attached to the probe 12, but is rigidly connected to the upper end of the drum 16.

The action of the described device is as follows.

The probe, being in its non-working position with the extreme upper position lifted by the 3 TaiK carriage, that the tip of the probe 12 is located at the base / level, is installed last on the surface of the soil to be investigated.

By turning the knob 8 counterclockwise, the upper sprockets 5 are rotated in the opposite direction. The inner sprockets 5. Internal branches of chains 5 and 7 with links 10 and 11 interlinked with each other, and together with them the carriage 3 sliding along guide racks. 2, moving down. The rod probe 12 is pushed into the soil by the descending carriage 3, moreover, due to the fact that the probe rod is tightly gripped by coupled: between themselves internal branches of chains 6 and 7, the longitudinal curvature of the STERL probe is excluded.

By moving the non-working (external) branch of the chain 6, the drive wheel of the friction pair 19 rotates and through the bevel gear pair 20-drum 16 with a paper tape. The rotation of the drum 16 is proportional to the shifted upward external branch of the chain 6, and therefore, proportional to the downward movement of the carriage 3 and the probe 12.

Due to the resistance of the soil, the probe 12 is pressed into it, the latter lags behind the movement of the carriage 3 downwards, compressing the spring 14 with its flange 13. At that, the feather 18, moving together with the probe 12 relative to the drum 16, writes a diagram on its tape, the vertical ordinate of which is resistance of this soil to the probe being pressed into it.

When the probe 12 is immersed in the soil to a predetermined depth, the knob 8 is rotated clockwise and the carriage 3 with the probe 12 rises to the extreme upper inoperative position.

Subject invention

Claims (2)

1. A soil probe with a device for measuring and recording soil resistance to pushing into it a rod probe descending along vertical guides, characterized in that, to prevent buckling of the probe, two connected ends with a carriage are used, interacting along opposite lines with the above-ground part is pressed into the soil of the probe, and one of the chains is equipped with hooks to cover the trunnions of the other chain. 2. The form of the probe according to claim. 2, so that the registering resistance of the soil device is made in the form of a feather rigidly connected to the upper end of the probe resting on the carriage through the maturation of the spring, and the concentric probe of the drum, a rotatable non-working branch of one of the chains passing through the carriage. 1 5 S 5-. FIG. 2