Soft soil layer hole collapse prevention device for geotechnical engineering investigation

Abstract

The utility model discloses a soft soil layer anti-sloughing hole device for geotechnical engineering investigation, which comprises a support frame, a support ring, a rotating component and an anti-sloughing plate, the support frame consists of two support rings, four fitting plates are fixedly mounted between the two support rings, the support ring is fixedly mounted on the side surface of each fitting plate through a mounting plate, and the rotating component is fixedly mounted on the side surface of each fitting plate. The rotating assembly is arranged on the supporting ring, the number of the anti-collapse plates is four, and the four anti-collapse plates are arranged on the side face of the supporting ring through the four adjusting assemblies correspondingly. According to the soft soil layer hole collapse prevention device for geotechnical engineering investigation, the problem that in the prior art, when the interior of a sampling hole is supported, the hole collapse prevention device is difficult to adjust according to the sampling holes of different sizes, so that the inner side wall of the sampling hole is attached is solved.

Description

Technical Field

[0001] This utility model relates to the technical field of anti-collapse hole devices, specifically to an anti-collapse hole device for soft soil layers used in geotechnical engineering exploration. Background Technology

[0002] During the geotechnical investigation, the staff first drills holes in the soil and rock layers. After drilling, the soil is sampled and observed. However, when sampling some soft soil layers, the surrounding soil is prone to collapse after drilling and sampling, which fills the drilled hole with soil again and affects the subsequent sampling work.

[0003] Therefore, when sampling soft soil layers, a sleeve is usually inserted into the hole to support the inner wall of the hole, which facilitates soil sampling. However, since the hole sizes vary, it is difficult to adjust the support sleeve according to the hole size, and it is difficult to accurately fit the inner wall of the hole, which may affect the support effect. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a device for preventing collapse of weak soil layers in geotechnical engineering investigations. This solves the problem mentioned in the background art that, when supporting the sampling hole, the device is difficult to adjust according to the different sizes of sampling holes, thus failing to ensure proper fit to the inner wall of the sampling hole.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A device for preventing collapse of weak soil layers in geotechnical engineering investigation includes a support frame consisting of two support rings, with four mating plates fixedly installed between the two support rings. The device also includes a support ring, a rotating assembly, and anti-collapse plates. The support rings are fixedly installed on the sides of the mating plates via mounting plates. The rotating assembly is disposed on the support rings. There are four anti-collapse plates, each disposed on the side of the support ring via four adjusting assemblies.

[0009] Furthermore, the rotating assembly includes a sliding block, a limiting rod, and a rotating plate. The outer wall of the support ring is provided with a circular groove, and four sliding blocks are slidably installed in the circular groove. The top of the sliding block is provided with a limiting groove, and the top of the support ring is provided with several limiting holes. The limiting rod is detachably installed in the limiting groove and the limiting holes. A rotating plate is fixedly installed on the side of each of the four sliding blocks.

[0010] Furthermore, the adjustment assembly includes a support cover, a screw, a moving block, a connecting rod, and a throttle. The top of each of the four rotating plates is fixedly mounted with a support cover, and a screw is rotatably mounted inside each of the four support covers. A moving block is mounted on each of the four screws, and a connecting rod is fixedly mounted on the top of each of the four moving blocks. The other end of the connecting rod is fixedly connected to the anti-collapse plate, and the throttle is coaxially connected to the screw.

[0011] In order to enable the movable block to move back and forth on the screw, the inner sidewall of the support cover is provided with a sliding groove, and the movable block is slidably installed in the sliding groove by a slider.

[0012] In order to enable the four rotating plates to rotate synchronously, an arc-shaped connecting frame is fixedly installed between each of the four rotating plates.

[0013] In order to enable the anti-collapse plate to support different sampling holes, the anti-collapse plate is further configured as an arc shape, and all four anti-collapse plates are located between two supporting rings.

[0014] (III) Beneficial Effects

[0015] Compared with the prior art, this utility model provides a device for preventing collapse of weak soil layers in geotechnical engineering investigation, which has the following beneficial effects:

[0016] 1. In this utility model, after the support frame is placed into the sampling hole, the anti-collapse plate can be moved back and forth by adjusting the component, so that the position of the anti-collapse plate can be adjusted according to the different sizes and diameters of the sampling hole, so that the side of the anti-collapse plate fits the inner wall of the sampling hole.

[0017] 2. In this utility model, during support, the anti-collapse plate can be rotated by the rotating component, thereby supporting different positions of the sampling hole and providing support for different parts of the sampling hole;

[0018] Therefore, the soft soil layer anti-collapse hole device for geotechnical engineering investigation can adjust the position and angle of the anti-collapse plate through the cooperation between the support ring, rotating component, adjusting component and anti-collapse plate, thereby making corresponding adjustments to sampling hole machines of different diameters and sizes. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the support frame of this utility model;

[0021] Figure 3This is a schematic diagram of the structure of the support frame and support ring of this utility model.

[0022] Figure 4 This is a schematic diagram of the structure of the support ring, anti-collapse plate, rotating assembly, and adjusting assembly of this utility model.

[0023] Figure 5 This utility model Figure 4 A magnified view of a portion of point A in the middle;

[0024] Figure 6 This is a schematic diagram of the structure of the support cover of this utility model.

[0025] In the diagram: 1. Support frame; 2. Support ring; 3. Adhesive plate; 4. Support ring; 5. Anti-collapse plate; 6. Sliding block; 7. Limiting rod; 8. Rotating plate; 9. Support cover; 10. Screw; 11. Moving block; 12. Connecting rod; 13. Turning handle; 14. Arc connecting frame. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figures 1 to 6 A device for preventing collapse of weak soil layers in geotechnical engineering investigation includes a support frame 1, which consists of two support rings 2, and four bonding plates 3 are fixedly installed between the two support rings 2. It also includes a support ring 4, a rotating component, and anti-collapse plates 5. The support ring 4 is fixedly installed on the side of the bonding plate 3 by a mounting plate. The rotating component is set on the support ring 4. There are four anti-collapse plates 5, which are respectively set on the side of the support ring 4 by four adjusting components.

[0028] like Figure 2 and Figure 3 When providing support, first drill holes in the soil. After drilling, place the support ring 2 and the bonding plate 3 into the sampling hole. Then, attach the bottom end of the support ring 4 to the upper surface of the soil for support. If the inner wall of the sampling hole and the outer wall of the bonding plate 3 can fit together, there is no need to adjust the position of the anti-collapse plate 5.

[0029] like Figure 4 , Figure 5 and Figure 6As shown, if the diameter of the drilled sampling hole is larger than the diameter of the supporting ring 2, the anti-collapse plate 5 is moved by adjusting the assembly. Because the anti-collapse plate 5 is set in an arc shape, and all four anti-collapse plates 5 are located between the two supporting rings 2, the side of the anti-collapse plate 5 can fit against the inner wall of the sampling hole. The adjusting assembly includes a support cover 9, a screw 10, a moving block 11, a connecting rod 12, and a throttle 13. The top of each of the four rotating plates 8 is fixedly installed with a support cover 9, and a screw 10 is rotatably installed inside each of the four support covers 9. A moving block 11 is installed on each of the four screws 10, and a connecting rod 12 is fixedly installed on the top of each of the four moving blocks 11. The other end of the rod 12 is fixedly connected to the anti-collapse plate 5. The handle 13 is coaxially connected to the screw 10. Specifically, by rotating the handle 13, the handle 13 drives the screw 10 to rotate inside the support cover 9. It should be noted that the moving block 11 and the screw 10 are driven by a rolling thread transmission, which is a known technology. Therefore, the moving block 11 can move on the screw 10, thereby driving the four anti-collapse plates 5 to move to fit against the inner wall of the sampling hole and support it. The inner wall of the support cover 9 is provided with a sliding groove, and the moving block 11 is slidably installed in the sliding groove by a slider, which can limit the movement of the moving block 11, so that the moving block 11 can move back and forth.

[0030] like Figure 4 and Figure 5 As shown, if support and bonding are required at different positions within the sampling hole, the anti-collapse plate 5 can be rotated by the rotating assembly to position it at different locations within the sampling hole for bonding. The rotating assembly includes a sliding block 6, a limiting rod 7, and a rotating plate 8. A circular groove is provided on the outer wall of the support ring 4, and four sliding blocks 6 are slidably installed within the circular groove. A limiting groove is provided at the top of the sliding block 6, and several limiting holes are provided at the top of the support ring 4. The limiting rod 7 is detachably installed in the limiting groove and the limiting hole. The rotating plate 8 is fixedly installed on the sides of each of the four sliding blocks 6. Specifically, since an arc connecting frame 14 is fixedly installed between each of the four rotating plates 8, the arc connecting frame 14 can be rotated by hand, thereby causing the rotating plate 8 and the sliding block 6 to rotate within the circular groove of the support ring 4, thus rotating the anti-collapse plate 5 to change its bonding position. After rotation, the limiting rod 7 is inserted into the limiting groove of the sliding block 6 and the corresponding limiting hole of the support ring 4 to fix it in place.

[0031] Working principle: When using this soft soil layer anti-collapse hole device for geotechnical engineering investigation, first place the support frame 1 into the sampling hole, and then place the bottom end of the support ring 4 against the ground. Then, the inner wall of the sampling hole can be adhered to by the adhesion plate 3. If there is a distance between the adhesion plate 3 and the inner wall of the sampling hole, the handle 13 can be rotated in sequence. This will drive the screw 10 to rotate in the support cover 9, thereby causing the moving block 11 to move back and forth on the screw 10. The moving block 11 will then drive the connecting rod 12 and the anti-collapse plate 5 to move towards the inner wall of the sampling hole, thereby adhering to and supporting the inner wall of the sampling hole.

[0032] If it is necessary to support different positions of the sampling hole, the arc connecting frame 14 can be rotated, thereby driving the rotating plate 8 and the sliding block 6 to rotate in the circular groove of the support ring 4, which in turn drives the support cover 9 and the anti-collapse plate 5 to rotate. After the rotation is completed, the limiting rod 7 is inserted into the limiting hole of the support ring 4 and the limiting groove of the sliding block 6 to fix them.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for preventing collapse of weak soil layers in geotechnical engineering investigation, comprising a support frame (1), wherein the support frame (1) is composed of two support rings (2), and four fitting plates (3) are fixedly installed between the two support rings (2), characterized in that, Also includes: Support ring (4), which is fixedly installed on the side of the bonding plate (3) by a mounting plate; A rotating assembly is disposed on the support ring (4); There are four anti-collapse plates (5), and the four anti-collapse plates (5) are respectively set on the side of the support ring (4) by four adjustment components.

2. The anti-collapse hole device for soft soil layers used in geotechnical engineering investigation according to claim 1, characterized in that, The rotating component includes: The outer side wall of the support ring (4) is provided with a circular groove, and four sliding blocks (6) are slidably installed in the circular groove; The limiting rod (7) has a limiting groove at the top of the sliding block (6) and a plurality of limiting holes at the top of the support ring (4). The limiting rod (7) can be detachably installed in the limiting groove and the limiting holes. Rotating plate (8) is fixedly installed on the sides of the four sliding blocks (6).

3. The anti-collapse hole device for weak soil layers used in geotechnical engineering investigation according to claim 2, characterized in that, The adjustment component includes: Support cover (9) is fixedly installed on the top of each of the four rotating plates (8); Screws (10) are rotatably installed inside the four support covers (9); Movable blocks (11) are installed on all four screws (10); The connecting rod (12) is fixedly installed on the top of each of the four movable blocks (11), and the other end of the connecting rod (12) is fixedly connected to the anti-collapse plate (5); The throttle (13) is coaxially connected to the screw (10).

4. The anti-collapse hole device for soft soil layers used in geotechnical engineering investigation according to claim 3, characterized in that, The inner wall of the support cover (9) is provided with a sliding groove, and the moving block (11) is slidably installed in the sliding groove by a slider.

5. A device for preventing collapse of weak soil layers in geotechnical engineering investigation according to claim 2, characterized in that, An arc-shaped connecting frame (14) is fixedly installed between each of the four rotating plates (8).

6. The anti-collapse hole device for weak soil layers used in geotechnical engineering investigation according to claim 1, characterized in that, The anti-collapse plate (5) is set in an arc shape, and all four anti-collapse plates (5) are located between the two supporting rings (2).

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