Sampling cutting ring combined structure for soil density detection

Abstract

The utility model discloses a soil density detection sampling cutting ring combined structure which comprises a gland and a cutting ring, and is characterized in that the cutting ring is in threaded connection with the lower part of a reducing sleeve; a limiting ring is arranged on the outer side of the reducing sleeve, and the upper end of the reducing sleeve abuts against the lower portion of the gland. A protruding part is fixed to the upper portion of the gland, and the diameter of the protruding part is 2-3 mm smaller than that of the cutting ring. The cutting ring has the advantages that due to the fact that the reducing sleeve is arranged, the cutting ring is completely pressed into the soil, and the limiting ring is arranged on the reducing sleeve, when the limiting ring abuts against the soil ground, it can be completely guaranteed that the cutting ring is completely pressed into the soil, and due to the fact that a large space is reserved between the reducing sleeve and the gland, the soil cannot be tightly pressed, and the cutting ring is not prone to falling off. The original tightness of the soil entering the cutting ring is ensured, and the detection precision is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of exploration, in particular to a soil sampling device. Background Art

[0002] When sampling soil density, a ring knife is generally used for soil sampling. The sampling process of the prior art is: using a rubber hammer to hit the pressure cover, the bottom of the pressure cover contacts the ring knife, so that the ring knife is pressed into the soil; but this method has the following defects: since it is impossible to determine whether the soil completely fills the ring knife, the ring knife needs to be completely pressed into the soil; and since the space between the pressure cover and the top of the ring knife is very small, the soil entering the space will be compressed, thereby affecting the tightness of the soil in the ring knife, and ultimately affecting the accuracy of soil sampling. Summary of the invention

[0003] In order to solve the above technical problems, the purpose of the utility model is to provide a soil density detection sampling ring knife combination structure, including a pressure cover and a ring knife, the ring knife is threadedly connected to the lower part of the adapter sleeve; a limit ring is arranged on the outer side of the adapter sleeve, and the upper end of the adapter sleeve abuts against the bottom of the pressure cover; a raised portion is fixed on the top of the pressure cover, and the diameter of the raised portion is 2-3mm smaller than the diameter of the ring knife.

[0004] A transition slope is arranged below the adapter sleeve.

[0005] The outer wall of the upper side of the ring cutter is provided with a thread, and the inner side of the lower part of the adapter sleeve is also provided with a thread; the upper side of the ring cutter and the lower part of the adapter sleeve are connected into one body through the thread.

[0006] The protrusion is cylindrical, and a plurality of supporting rings are arranged inside the protrusion.

[0007] The advantages of the utility model are: due to the provision of the adapter sleeve, the ring knife is completely pressed into the soil, and because the adapter sleeve is provided with a limit ring, when the limit ring abuts against the soil ground, it can not only fully ensure that the ring knife is completely pressed into the soil, but also because a large space is left between the adapter sleeve and the pressure cover, the soil will not be compressed, thereby ensuring the original tightness of the soil entering the ring knife and improving the detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a structural schematic diagram of the utility model. DETAILED DESCRIPTION

[0009] The present invention is described in detail below with reference to the accompanying drawings. As shown in the figure, the present invention includes a pressure cover 3 and a ring cutter 1. The ring cutter 1 is connected to the lower part of the adapter sleeve 2 by threads. A limit ring 22 is arranged on the outer side of the adapter sleeve, and the upper end of the adapter sleeve abuts against the lower part of the pressure cover. A protrusion 4 is fixed on the upper part of the pressure cover. The function of the protrusion is to receive the hammering of a rubber hammer. In addition, the protrusion can be used to push the soil out of the ring cutter. Therefore, the diameter d of the protrusion is smaller than the diameter D2-3mm of the ring cutter, that is, Dd=2-3mm. In order to ensure the smooth downward pressing of the adapter sleeve and reduce the resistance, a transition slope 23 is arranged at the lower part of the adapter sleeve.

[0010] The outer wall of the upper side of the ring cutter is provided with a thread 21, and the inner side of the lower part of the adapter sleeve is also provided with a thread; the upper side of the ring cutter and the lower part of the adapter sleeve are connected as a whole through the thread.

[0011] The protrusion 4 is cylindrical, and a plurality of support rings 6 are arranged inside the protrusion 4 .

[0012] Since the utility model is provided with an adapter sleeve, the ring knife is completely pressed into the soil 5, and since the adapter sleeve is provided with a limit ring, when the limit ring abuts against the soil ground, it can not only completely ensure that the ring knife is completely pressed into the soil, but also since a large space is left between the adapter sleeve and the pressure cover, the soil will not be compressed, thereby ensuring the original tightness of the soil entering the ring knife and improving the detection accuracy.

Claims

1. A soil density detection sampling ring knife combination structure, comprising a gland and a ring knife, characterized in that: The ring cutter is threadedly connected to the lower part of the adapter sleeve; a limit ring is arranged on the outer side of the adapter sleeve, and the upper end of the adapter sleeve abuts against the lower side of the pressure cover; a raised portion is fixed on the upper side of the pressure cover, and the diameter of the raised portion is 2-3mm smaller than the diameter of the ring cutter.

2. The soil density detection sampling ring knife combination structure according to claim 1 is characterized in that: A transition slope is arranged below the adapter sleeve.

3. The soil density detection sampling ring knife combination structure according to claim 1 is characterized in that: The outer wall of the upper side of the ring cutter is provided with a thread, and the inner side of the lower part of the adapter sleeve is also provided with a thread; the upper side of the ring cutter and the lower part of the adapter sleeve are connected into one body through the thread.

4. The soil density detection sampling ring knife combination structure according to claim 1 is characterized in that: The protrusion is cylindrical, and a plurality of supporting rings are arranged inside the protrusion.

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