A detection device for loess compaction pile compaction coefficient

Abstract

The utility model discloses a detection device for loess compaction pile compaction coefficient, including compaction density detector and shallow, be provided with the probe rod on the compaction density detector, the one side of compaction density detector is installed the operating rod, and the upper portion of shallow is installed the support rod, the utility model discloses, when using, can move shallow to the detection position of collapsible loess field, make the drill head aim at the top of detection point, through the fixed screw rod of twisting out and the rotation of holding the pole can make the drill head and the fender pipe drill into the ground, after drilling into the specified depth, can take out the drill head and connecting rod from the fender pipe, at this moment can hand the operating rod and make compaction density detector into the fender pipe, make the probe rod and the soil in the borehole contact and carry out the detection of compaction coefficient, and the fender pipe will be left in the borehole and fender in the borehole lateral wall place in the detection process, prevent the soil of borehole lateral wall to collapse to the detection point in the borehole, reduce the detection error.

Description

Technical Field

[0001] This utility model relates to the field of soil testing technology, specifically a device for testing the compaction coefficient of loess compaction piles. Background Technology

[0002] Loess compaction piles are a technique commonly used for treating collapsible loess foundations. Their core principle is to improve soil density and mechanical properties through mechanical compaction. The compaction coefficient is a key parameter for evaluating the compaction effect. A compaction density tester is an instrument used to measure the compaction density of materials. In measuring the loess compaction coefficient, the compaction density tester can measure the compaction density of loess after compaction treatment, and it is one of the fundamental data points for calculating the loess compaction coefficient.

[0003] In existing technologies, the compaction coefficient of loess may vary significantly at different depths, and these differences can affect the stability of the foundation. Therefore, it is necessary to test the compaction coefficient of loess at different depths. Usually, it is necessary to dig holes at corresponding depths at the test points and insert the testing instrument into the holes for testing. However, during the testing process, the soil on the sidewalls of the holes at different depths is prone to collapse and fall to the bottom of the holes, affecting the accuracy of the test. Therefore, a testing device for the compaction coefficient of loess compaction piles is needed to meet people's needs. Utility Model Content

[0004] The purpose of this invention is to provide a device for detecting the compaction coefficient of loess compaction piles, in order to solve the problem mentioned in the background art that when using a compaction density tester to check the compaction coefficient of soil at different depths, the soil on the sidewalls of the hole at different depths is prone to collapse and fall to the bottom of the hole, affecting the accuracy.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a device for detecting the compaction coefficient of loess compaction piles, comprising a compaction density detector and a trolley, wherein a probe is provided on the compaction density detector; an operating rod is installed on one side of the compaction density detector, a support rod is installed above the trolley, a sliding sleeve is slidably fitted on the support rod, a drilling structure is connected to the sliding sleeve, a connecting seat is connected to the drilling structure, a limiting structure is connected to the connecting seat, and a fixing structure is connected between the support rod and the sliding sleeve.

[0006] Preferably, the drilling structure includes a connecting collar, which is installed on one side of the sliding sleeve plate. A retaining tube is rotatably installed inside the connecting collar, and a connecting rod is movably installed inside the retaining tube. A drill bit is installed at one end of the connecting rod.

[0007] Preferably, a scale groove is provided on one side of the support rod, and a scale pointer is provided on one side of the sliding sleeve, with the scale pointer corresponding to the scale groove.

[0008] Preferably, a limiting ring is rotatably installed inside the connecting collar, and the limiting ring is fixedly sleeved on the retaining tube.

[0009] Preferably, the limiting structure includes two connecting seats, which are symmetrically installed on the outer surface of the retaining tube. Each of the two connecting seats has a connecting groove inside. The same handle is movably installed in the two connecting grooves. The handle is installed above the connecting rod. Two limiting collars are slidably installed on the handle. The two limiting collars are movably sleeved on the two connecting seats respectively.

[0010] Preferably, two bearing seats are symmetrically installed above the grip, and the same bidirectional lead screw is rotatably installed inside the two bearing seats. The bidirectional lead screw is threaded inside the two limiting collars.

[0011] Preferably, the fixing structure includes two connecting screw holes, which are respectively opened inside the support rod and the sliding sleeve plate, and the same fixing screw is installed in the internal threads of the two connecting screw holes.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] (1) When using this utility model, the trolley can be moved to the detection position of the collapsible loess site, the drill bit is aligned with the top of the detection point, the drill bit and the retaining pipe can be drilled into the ground by unscrewing the fixing screw and rotating the grip rod. After drilling to the specified depth, the drill bit and the connecting rod can be pulled out from the retaining pipe. At this time, the operating rod can be held and the compaction density detector can be inserted into the retaining pipe so that the probe rod contacts the soil in the borehole and the compaction coefficient is detected. During the detection process, the retaining pipe will remain in the borehole and protect the side wall of the borehole to prevent the soil on the side wall of the borehole from collapsing into the detection point in the borehole and reduce the detection error.

[0014] (2) During the drilling process, the sliding sleeve will follow the drilling of the retaining pipe and the drill bit, which will cause the height value of the scale pointer pointing to the scale groove to change. The drilling depth of the retaining pipe can be determined by the position of the scale pointer before and after drilling, so as to use the compaction density tester to detect the compaction coefficient of the soil at the corresponding depth. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of a device for detecting the compaction coefficient of loess compaction piles proposed in this utility model;

[0016] Figure 2 This is a side view of the structure of a device for detecting the compaction coefficient of loess compaction piles proposed in this utility model.

[0017] Figure 3 This is a schematic diagram of the drill bit structure of a device for detecting the compaction coefficient of loess compaction piles proposed in this utility model.

[0018] Figure 4 This is a schematic diagram of the handle structure of a device for detecting the compaction coefficient of loess compaction piles proposed in this utility model.

[0019] Figure 5 This is a schematic diagram of the connecting seat structure of a detection device for the compaction coefficient of loess compaction piles proposed in this utility model;

[0020] Figure 6 This is a schematic cross-sectional view of a device for detecting the compaction coefficient of loess compaction piles proposed in this utility model.

[0021] In the diagram: 100, compaction density tester; 101, trolley; 102, probe rod; 103, operating lever; 200, support rod; 201, sliding sleeve; 202, connecting collar; 203, retaining tube; 204, connecting rod; 205, drill bit; 206, scale groove; 207, scale pointer; 208, limiting ring; 300, connecting seat; 301, connecting groove; 302, grip; 303, limiting collar; 304, shaft seat; 305, double-acting lead screw; 400, connecting screw hole; 401, fixing screw. Detailed Implementation

[0022] 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.

[0023] Example 1: Please refer to Figure 1-6 This utility model provides a technical solution: a device for detecting the compaction coefficient of loess compaction piles, including a compaction density detector 100 and a trolley 101. The compaction density detector 100 is equipped with a probe 102; an operating rod 103 is installed on one side of the compaction density detector 100; a support rod 200 is installed above the trolley 101; a sliding sleeve 201 is slidably sleeved on the support rod 200; a drilling structure is connected to the sliding sleeve 201; a connecting seat 300 is connected to the drilling structure; a limiting structure is connected to the connecting seat 300; and a fixing structure is connected between the support rod 200 and the sliding sleeve 201. In use, the trolley 101 is moved above the detection point, and the height of the sliding sleeve 201 can be adjusted by loosening the fixing structure to allow the drilling structure to drill into the detection point. Then, the limiting structure is used to contact and restrict the internal components of the drilling structure so that the compaction density detector 100 can be inserted into the detection point from the drilling structure for compaction coefficient detection.

[0024] Furthermore, the drilling structure includes a connecting collar 202, which is installed on one side of the sliding sleeve 201. A retaining pipe 203 is rotatably installed inside the connecting collar 202, and a connecting rod 204 is movably installed inside the retaining pipe 203. A drill bit 205 is installed at one end of the connecting rod 204. By adjusting the height of the drill bit 205 to make it contact the ground, and then rotating the retaining pipe 203, the connecting rod 204 and the drill bit 205, it can slowly drill into the collapsible loess site to perform drilling.

[0025] Furthermore, a scale groove 206 is provided on one side of the support rod 200, and a scale pointer 207 is provided on one side of the sliding sleeve 201. The scale pointer 207 corresponds to the scale groove 206. During the drilling process, the sliding sleeve 201 will move down and down, causing the position of the scale pointer 207 pointing to the scale groove 206 to change. The drilling depth of the retaining pipe 203 can be determined by the value pointed to by the scale pointer 207 before and after drilling into the ground.

[0026] Furthermore, a limiting ring 208 is rotatably installed inside the connecting collar 202. The limiting ring 208 is fixedly sleeved on the retaining tube 203. When the retaining tube 203 rotates, it can drive the limiting ring 208 to rotate inside the connecting collar 202. The setting of the limiting ring 208 can prevent the retaining tube 203 from separating from the connecting collar 202.

[0027] Example 2: As Figure 4-6 To enable the retaining pipe 203 to rotate with the drill bit 205 and insert into the ground, a limiting structure is provided. This limiting structure includes two connecting seats 300, symmetrically mounted on the outer surface of the retaining pipe 203. Each connecting seat 300 has a connecting groove 301 inside, within which a single gripping rod 302 is movably mounted. The gripping rod 302 is mounted above the connecting rod 204, and two limiting collars 303 are slidably mounted on the gripping rod 302. These two limiting collars 303 are movably fitted onto the two connecting seats 300. Two shaft seats 30 are symmetrically mounted above the gripping rod 302. 4. The same bidirectional lead screw 305 is rotatably installed inside the two bearing seats 304. The bidirectional lead screw 305 is threaded inside the two limiting collars 303. Holding the grip 302 and rotating it can drive the connecting rod 204 and the drill bit 205 to rotate. At the same time, the grip 302 can drive the guard tube 203 to rotate through the connecting seat 300. When the bidirectional lead screw 305 is rotated, it can drive the two limiting collars 303 to move away from each other, releasing the connection restriction between the connecting seat 300 and the grip 302. At this time, pulling the grip 302 upward can pull the connecting rod 204 and the drill bit 205 out of the guard tube 203. The remaining features are the same as in embodiment 1.

[0028] Example 3: As Figure 2-3In order to limit the height of the sliding sleeve 201 when the device is not in use, a fixing structure is arranged. The fixing structure includes two connecting screw holes 400, which are respectively opened inside the support rod 200 and the sliding sleeve 201. The same fixing screw 401 is installed in the internal threads of the two connecting screw holes 400. The cooperation between the connecting screw holes 400 and the fixing screw 401 can limit the position of the sliding sleeve 201 on the support rod 200, preventing the drill bit 205 from falling and contacting the ground, so as to move the position of the trolley 101. When the fixing screw 401 is unscrewed from the connecting screw hole 400, the height of the sliding sleeve 201 can be adjusted. The remaining features are the same as in Embodiment 1.

[0029] The working principle is as follows: Pushing the trolley 101 moves it above the detection point in the collapsible loess site. Rotating the fixing screw 401 and unscrewing it from the connecting screw hole 400 releases the height restriction on the sliding sleeve 201, allowing the drill bit 205 to contact the ground. Holding and rotating the grip rod 302 drives the connecting rod 204 and the drill bit 205 to rotate. Simultaneously, the grip rod 302 drives the retaining pipe 203 to rotate via the connecting seat 300, thus allowing the drill bit 205 and the retaining pipe 203 to drill into the collapsible loess site. The connecting collar 202 and the sliding sleeve 201 descend with the drilling depth, allowing the sliding sleeve 201 to slide on the support rod 200. This causes the position of the scale pointer 207 pointing to the scale groove 206 to change. The value indicated by the scale pointer 207 before and after drilling can be used to determine the position of the retaining pipe. After drilling to the specified depth, the bidirectional lead screw 305 can be rotated. The two ends of the bidirectional lead screw 305 are provided with threads facing opposite directions, and the threads are engaged with the internal threads of the limiting collar 303. Thus, when the bidirectional lead screw 305 rotates, it can drive the two limiting collars 303 away from each other, so that the limiting collars 303 are disengaged from the connecting seat 300, and the connection restriction between the connecting seat 300 and the handle 302 is released. At this time, pulling the handle 302 upward can pull out the connecting rod 204 and the drill bit 205 from the retaining pipe 203. After being completely pulled out, the operating rod 103 can be held and the compaction density tester 100 can be inserted into the retaining pipe 203, so that the probe 102 on the compaction density tester 100 passes through the retaining pipe 203 and contacts the soil in the borehole to detect the compaction coefficient of the soil at the corresponding depth.

[0030] 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 detecting the compaction coefficient of loess compaction piles, comprising a compaction density detector (100) and a trolley (101), wherein the compaction density detector (100) is provided with a probe (102); characterized in that: An operating lever (103) is installed on one side of the compaction density tester (100), and a support rod (200) is installed above the trolley (101). A sliding sleeve plate (201) is slidably sleeved on the support rod (200), and a drilling structure is connected to the sliding sleeve plate (201). A connecting seat (300) is connected to the drilling structure, and a limiting structure is connected to the connecting seat (300). A fixing structure is connected between the support rod (200) and the sliding sleeve plate (201).

2. The device for detecting the compaction coefficient of loess compaction piles according to claim 1, characterized in that: The drilling structure includes a connecting collar (202), which is installed on one side of the sliding sleeve (201). A retaining tube (203) is rotatably installed inside the connecting collar (202), and a connecting rod (204) is movably installed inside the retaining tube (203). A drill bit (205) is installed at one end of the connecting rod (204).

3. The device for detecting the compaction coefficient of loess compaction piles according to claim 2, characterized in that: The support rod (200) has a scale groove (206) on one side, and the sliding sleeve (201) has a scale pointer (207) on one side, with the scale pointer (207) corresponding to the scale groove (206).

4. The device for detecting the compaction coefficient of loess compaction piles according to claim 2, characterized in that: The connecting collar (202) is internally rotatably mounted with a limiting ring (208), which is fixedly sleeved on the retaining tube (203).

5. The device for detecting the compaction coefficient of loess compaction piles according to claim 1, characterized in that: The limiting structure includes two connecting seats (300), which are symmetrically installed on the outer surface of the guard tube (203). Each of the two connecting seats (300) has a connecting groove (301) inside. The same handle (302) is movably installed in the two connecting grooves (301). The handle (302) is installed above the connecting rod (204). Two limiting collars (303) are slidably installed on the handle (302). The two limiting collars (303) are respectively movably sleeved on the two connecting seats (300).

6. The device for detecting the compaction coefficient of loess compaction piles according to claim 5, characterized in that: Two bearing seats (304) are symmetrically installed above the grip (302). The same double-acting screw (305) is rotatably installed inside the two bearing seats (304). The double-acting screw (305) is threaded inside the two limiting collars (303).

7. The device for detecting the compaction coefficient of loess compaction piles according to claim 1, characterized in that: The fixing structure includes two connecting screw holes (400), which are respectively opened inside the support rod (200) and the sliding sleeve (201). The same fixing screw (401) is installed in the internal threads of the two connecting screw holes (400).

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