Cement soil mixing pile detecting and sampling device

Abstract

The utility model discloses a cement mixing pile detection sampling device, which relates to the technical field of cement mixing shaft construction and comprises a mixing shaft, a connecting component and a sampling component. The connecting assembly comprises a connecting sleeve and a fixing piece, and a connecting rod is arranged on the connecting sleeve; the sampling assembly comprises a collecting cylinder and a plurality of groups of sampling cylinders, the collecting cylinder sleeves the outer wall of the stirring shaft, an outer cylinder is rotatably arranged on the outer wall of the collecting cylinder, a sampling port is formed in the outer cylinder, a mud guide plate is arranged on the sampling port, and a driving part is arranged between the outer cylinder and the collecting cylinder; the whole device is connected with the stirring shaft by arranging the connecting sleeve, in the rotating process of the stirring shaft, the outer barrel is driven to rotate through the driver, so that the sampling opening is communicated with the sampling barrel, cement soil enters the sampling barrel under the action of the mud guide plate, sampling is completed, sampling can be conducted along with rotation of the stirring shaft, and the sampling efficiency is improved. Targeted sampling is performed according to different positions of the stirring shaft, so that sampling is complete, and the sampling efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of cement-soil mixing shaft construction technology, specifically to a cement-soil mixing pile testing and sampling device. Background Technology

[0002] Using cement mixing piles to improve the bearing capacity of the foundation is a common method for treating soft soil foundations. Cement is injected into the soil and thoroughly mixed using a mixing pile machine, causing a series of physicochemical reactions between the cement and the soil, which hardens the soft soil and increases the foundation strength. When the grout is injected into the soft soil foundation, it is simultaneously mixed with the surrounding soil. During the mixing process, the uniformity and moisture content of the cement-soil mixture determine the strength of the pile body. During construction, it is necessary to test the cement-soil mixture formed during construction to obtain the actual parameters of the cement-soil mixture, so as to adjust the amount of cement used in a timely manner and ensure the construction quality.

[0003] Patent CN117030368B discloses a three-axis cement-soil mixing pile cement-soil slurry sampling machine, including a sampler and a selection area cover. The sampler has multiple storage chambers, each containing a sampling bottle. The selection area cover is rotatably mounted on the sampler and has a slurry inlet corresponding to the opening of the sampling bottle. A servo motor is installed in the sampler, and a delivery rope is fixedly connected to the top of the sampler. The servo motor... The slurry inlet is rotated to the corresponding sampling bottle, allowing the slurry to enter. After loading each sampling bottle 3 into the sampler 1, the selection area cover 2 is assembled. Then, the equipment is lowered to the first sampling point under the foundation using the release rope 12. At this point, the slurry inlet 21 corresponds to the first sampling bottle 3. Cement-soil slurry flows from the slurry inlet 21 into the sampling bottle 3. Once full, the selection area cover 2 is rotated to move the slurry inlet 21 to an area without sampling bottles 3, and the equipment is lowered to the next sampling point. The second sampling point at a depth is then controlled to correspond with the next sampling bottle 3 for a second sampling. This process is repeated to achieve sampling of cement-soil slurry at multiple depths in a single operation, improving sampling efficiency. After collection, the equipment is lifted to the ground. In this embodiment, the sampling bottle 3 can be pushed out by rotating the slurry inlet 21 to the corresponding sampling bottle 3 and pushing the top rod 5 upward. In this patent, by setting multiple sets of sampling bottles, sampling and testing can be carried out at different locations within the cement-soil mixing pile. However, sampling is done after the cement-soil mixing pile is completed, and the sampling device is placed into the pile body using a delivery rope. During the sampling process, the mixing shaft needs to leave the pile body, and the sampling device sinks into the pile body to collect samples. It is difficult to collect samples while the cement-soil mixing pile is being mixed with the mixing shaft. It is also difficult to control the location of the sampling point. Relying on the sampling device to sink for sampling results in a long operation time, and the surrounding cement-soil will be stirred during the upward movement of the sampling device. Utility Model Content

[0004] The main purpose of this utility model is to provide a cement-soil mixing pile testing and sampling device to solve the problems of slow sampling speed, difficulty in controlling sampling points, and difficulty in sampling while moving with the mixing shaft in existing cement-soil mixing piles.

[0005] To achieve the above objectives, this utility model provides a sampling device for testing cement-soil mixing piles, comprising:

[0006] The connecting assembly includes a detachable connecting sleeve mounted on a stirring shaft and a fixing member disposed on the connecting sleeve; the connecting sleeve has an anti-slip layer inside and a connecting rod on the connecting sleeve; the fixing member drives the connecting sleeve to abut against the stirring shaft under the action of external force, thereby making the connecting sleeve and the stirring shaft fixedly connected.

[0007] The sampling assembly includes a collection cylinder mounted on a connecting rod and multiple sampling cylinders spaced apart within the collection cylinder. The collection cylinder is sleeved on the outer wall of the stirring shaft, and an outer cylinder is rotatably mounted on the outer wall of the collection cylinder. The outer cylinder has a sampling port. A mud guide plate is provided on the sampling port. A driving component is provided between the outer cylinder and the collection cylinder. The driving component rotates under the action of external force to connect the sampling port with different sampling cylinders.

[0008] As a further improvement of this utility model, the connecting sleeve includes a left sleeve and a right sleeve that are connected to each other; the anti-slip layer includes rubber anti-slip pads disposed on the inner walls of the left sleeve and the right sleeve; the fixing component includes bolts disposed on the left sleeve and the right sleeve and nuts disposed on the bolts.

[0009] As a further improvement of this utility model, the collection cylinder has an installation cavity at its center; the stirring shaft is located inside the installation cavity; multiple sets of placement cavities are spaced apart on the outer wall of the collection cylinder; and the sampling cylinder is installed inside the placement cavity.

[0010] As a further improvement of this utility model, a gap is left between the inner wall of the outer cylinder and the outer wall of the collecting cylinder to form a transmission space; the driving component includes a driving motor disposed on the outer wall of the collecting cylinder and a transmission gear ring disposed on the inner wall of the outer cylinder; a transmission gear is provided between the driving motor and the transmission gear ring.

[0011] As a further improvement of this utility model, there is a gap between the end of the mud guide plate connected to the outer cylinder and the sampling port, the end of the mud guide plate away from the outer cylinder is located above the sampling port, and there is a gap between the mud guide plate and the collecting cylinder to form a mud passage.

[0012] As a further improvement of this utility model, it also includes a guide tube disposed on the outer wall of the stirring shaft; a cable is disposed inside the guide tube; a cable channel is disposed on the collecting cylinder; and the cable passes through the cable channel and is electrically connected to the drive motor.

[0013] The beneficial effects of this utility model are reflected in:

[0014] The entire device is connected to the mixing shaft by a connecting sleeve. During the rotation of the mixing shaft, the outer cylinder is driven to rotate, so that the sampling port is connected to the sampling cylinder. Under the action of the mud guide plate, the cement soil enters the sampling cylinder to complete the sampling. Sampling can be carried out as the mixing shaft rotates, and targeted sampling can be carried out according to different positions of the mixing shaft, so as to ensure complete sampling and improve sampling efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the connection structure between the cement-soil mixing pile detection and sampling device and the mixing pile according to this utility model;

[0016] Figure 2 This is a schematic diagram of the overall structure of a cement-soil mixing pile testing and sampling device according to the present invention.

[0017] Figure 3 This is a schematic diagram of the connection structure between the collection cylinder and the outer cylinder of a cement-soil mixing pile testing and sampling device according to the present invention;

[0018] Figure 4 This is a schematic diagram of the cylinder cover structure of a cement-soil mixing pile testing and sampling device according to the present invention;

[0019] Figure 5 This is a schematic diagram of the outer cylinder structure of a cement-soil mixing pile testing and sampling device according to the present invention;

[0020] Figure 6 This is a schematic diagram of the collection cylinder structure of a cement-soil mixing pile testing and sampling device according to the present invention;

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Connecting sleeve; 101. Left sleeve; 102. Right sleeve; 103. Ear plate; 104. Connecting hole; 2. Fixing component; 201. Bolt; 202. Nut; 3. Anti-slip layer; 301. Rubber anti-slip pad; 4. Connecting rod; 5. Collection cylinder; 6. Sampling cylinder; 7. Outer cylinder; 8. Sampling port; 9. Guide mud plate; 10. Driving component; 1001. Drive motor; 1002. Transmission gear ring; 1003. Transmission gear 11. Wheel; 12. Mounting cavity; 13. Placement cavity; 14. Mounting pipe; 15. Placement port; 16. Transmission space; 17. Through hole; 18. Cylinder cover; 19. Through hole; 20. Screw hole; 21. Stud; 22. Support plate; 23. Mud passage; 24. Conduit; 25. Cable; 26. Cable passage; 27. Vertical passage; 28. Cable hole; 29. ​​Agitator shaft; 30. Agitator blade; 31. Slurry outlet. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the described embodiments are merely some, not all, of the embodiments of this utility model. Unless otherwise specified, the embodiments and features described in this application can be combined with each other. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0024] In one embodiment, see Figure 1 The present invention relates to a cement-soil mixing pile testing and sampling device, comprising a mixing shaft 28, a connecting component, and a sampling component.

[0025] The connecting assembly includes a detachable connecting sleeve 1 mounted on the stirring shaft 28 and a fixing member 2 set on the connecting sleeve 1. The connecting sleeve 1 has an anti-slip layer 3 inside and a connecting rod 4 on the connecting sleeve 1. Under the action of external force, the fixing member 2 drives the connecting sleeve 1 to abut against the stirring shaft 28, thereby fixing the connecting sleeve 1 to the stirring shaft 28. The sampling assembly includes a collecting cylinder 5 set on the connecting rod 4 and multiple sets of sampling cylinders 6 set at intervals inside the collecting cylinder 5. The collecting cylinder 5 is sleeved on the outer wall of the stirring shaft 28. An outer cylinder 7 is rotatably provided on the outer wall of the collecting cylinder 5. A sampling port 8 is provided on the outer cylinder 7. A mud guide plate 9 is provided on the sampling port 8. A driving member 10 is provided between the outer cylinder 7 and the collecting cylinder 5. The driving member 10 rotates under the action of external force so that the sampling port 8 is connected to different sampling cylinders 6.

[0026] Further, see Figure 2 The connecting sleeve 1 includes a left sleeve 101 and a right sleeve 102 that are connected to each other. The anti-slip layer 3 includes a rubber anti-slip pad 301 disposed on the inner wall of the left sleeve 101 and the right sleeve 102. The fastener 2 includes a bolt 201 disposed on the left sleeve 101 and the right sleeve 102 and a nut 202 disposed on the bolt 201.

[0027] Preferably, the left sleeve 101 and the right sleeve 102 are formed by splitting a hollow cylindrical tube with openings at both ends. The left sleeve 101 and the right sleeve 102 are respectively provided with ear plates 103, and the ear plates 103 are provided with connecting holes 104.

[0028] Preferably, the bolt 201 passes through the connecting hole 104 on the left sleeve 101 and the right sleeve 102 and connects with the nut 202, thereby clamping the left sleeve 101 and the right sleeve 102 on the stirring shaft 28.

[0029] In the above configuration, the connection positions of the left sleeve 101 and the right sleeve 102 with the mixing shaft 28 are located above the mixing blade 29 at the very end of the mixing shaft 28. The left sleeve 101 and the right sleeve 102 are located below the slurry outlet 30 on the mixing shaft 28, which does not affect the slurry outlet. At the same time, the left sleeve 101 and the right sleeve 102 are above the mixing blade 29 to prevent the connecting sleeve 1 and the sampling component from separating from the mixing shaft 28 during the high-speed rotation of the mixing pile. The connecting rod 4 is set along the axial direction of the mixing shaft 28.

[0030] Further, see Figure 3 , 6 The collection cylinder 5 has an installation cavity 11 in the center, and the stirring shaft 28 is located in the installation cavity 11; multiple sets of placement cavities 12 are provided at intervals on the outer wall of the collection cylinder 5, and the sampling cylinder 6 is installed in the placement cavity 12.

[0031] Preferably, the collecting cylinder 5 is a hollow cylinder with a placement cavity 12 formed inside the hollow part of the collecting cylinder 5. At both ends of the collecting cylinder 5, there are mounting tubes 13 that communicate with the placement cavity 12, and the interior of the mounting tubes 13 forms a mounting cavity 11.

[0032] Preferably, the upper end face of the collection tube 5 is provided with multiple sets of placement ports 14, which are connected to the placement cavity 12. The sampling tube 6 is placed into the placement cavity 12 through the placement port 14.

[0033] Preferably, the sampling cylinder 6 is a hollow cylinder with one end open. The closed end of the sampling cylinder 6 passes through the placement port 14 and is located in the placement cavity 12. The open end of the sampling cylinder 6 is flush with the upper end surface of the collection cylinder 5.

[0034] Preferably, a set of connecting rods 4 is provided, with one end of the connecting rod 4 fixedly connected to the left sleeve 101 and the other end fixedly connected to the mounting tube 13 on the upper surface of the collecting cylinder 5.

[0035] In the above setup, when connecting the collecting cylinder 5 to the stirring shaft 28, the end of the stirring shaft 28 passes through the mounting pipe 13 and extends beyond the collecting cylinder 5. At this time, with the connection of the connecting rod 4, the left sleeve 101 is located on the outer wall above the stirring shaft 28. The right sleeve 102 is connected to the left sleeve 101, thereby stably connecting the collecting cylinder 5 to the stirring shaft 28.

[0036] Further, see Figure 3 , 4 5. A gap is left between the inner wall of the outer cylinder 7 and the outer wall of the collecting cylinder 5 to form a transmission space 15; the driving component 10 includes a driving motor 1001 disposed on the outer wall of the collecting cylinder 5 and a transmission gear ring 1002 disposed on the inner wall of the outer cylinder 7, and a transmission gear 1003 is provided between the driving motor 1001 and the transmission gear ring 1002.

[0037] Preferably, the outer cylinder 7 is a hollow cylinder with one open end. The closed end of the outer cylinder 7 is provided with a through hole 16, and the open end of the outer cylinder 7 is provided with a cylinder cover 17. The cylinder cover 17 is provided with a through hole 1816. The outer walls of the cylinder cover 17 and the outer cylinder 7 are respectively provided with screw holes 19. The cylinder cover 17 and the outer cylinder 7 are connected by a stud 20. The inner diameter of the outer cylinder 7 is larger than the outer diameter of the collecting cylinder 5, thereby forming a transmission space 15 between the two.

[0038] Preferably, a support plate 21 is provided on the outer wall of the collection cylinder 5, and the drive motor 1001 is mounted on the support plate 21; the transmission gear 1003 is mounted on the shaft of the drive motor 1001.

[0039] Preferably, the sampling port 8 is located on the cylinder cover 17.

[0040] In the above setup, the drive motor 1001 is an existing device, and no structural improvements are proposed. Before fixing the connecting rod 4 to the mounting tube 13 at the upper end of the collecting cylinder 5, the cylinder cover 17 is first fitted onto the collecting cylinder 5 through the through hole 1816. After welding the connecting rod 4 to the mounting tube 13 and connecting the connecting sleeve 1 to the stirring shaft 28, the open end of the outer cylinder 7 is facing upwards, and the collecting cylinder 5 is placed inside the outer cylinder 7. The cylinder cover 17 and the outer cylinder 7 are connected using the stud 20, thereby completing the installation of the outer cylinder 7 and the collecting cylinder 5. The rotation of the drive motor 1001 drives the transmission gear 1003 to rotate. The transmission gear 1003 meshes with the transmission rack, causing the outer cylinder 7 to rotate.

[0041] Further, see Figure 2 There is a gap between the end of the mud guide plate 9 connected to the outer cylinder 7 and the sampling port 8. The end of the mud guide plate 9 away from the outer cylinder 7 is located above the sampling port 8. There is a gap between the mud guide plate 9 and the collection cylinder 5 to form a mud passage channel 22.

[0042] Preferably, there is a gap between the mud guide plate 9 and the installation pipe 13 to form a mud passage channel 22.

[0043] Preferably, the mud guide plate 9 is inclinedly disposed on the cylinder cover 17.

[0044] In the above setup, after the outer cylinder 7 rotates to connect the sampling port 8 with the sampling cylinder 6, the stirring shaft 28 drives the collecting cylinder, sampling cylinder 6, and outer cylinder 7 to rotate together. The cement soil in the cement-soil mixing pile is blocked and guided by the mud guide plate 9 and enters the collecting cylinder 5 from the sampling port 8 to complete the collection. There is a gap between the end of the mud guide plate 9 connected to the cylinder cover 17 and the sampling port 8, which can store cement soil from different positions of the cement-soil mixing pile. When the collecting cylinder 5 reaches the collection point, as the mixing pile rotates, the cement soil stored at the mud guide plate 9 will be continuously replaced and discharged from the mud passage 22, reducing the amount of cement soil from other positions entering the sampling cylinder 6.

[0045] Further, see Figure 2It also includes a guide tube 23 set on the outer wall of the stirring shaft 28, and a cable 24 is provided in the guide tube; a cable channel 25 is provided on the collecting cylinder 5, and the cable 24 passes through the cable channel 25 and is electrically connected to the drive motor 1001.

[0046] Preferably, the cable channel 25 includes a vertical channel 26 disposed in the inner wall of the mounting tube 13 at the upper part of the collecting cylinder 5, and a cable hole 27 disposed on the outer wall of the collecting cylinder 5. The cable 24 passes through the guide tube and enters the vertical channel 26. The mounting cavity 11 is pulled out from the cable hole 27 and connected to the drive motor 1001.

[0047] In the above configuration, the drive motor 1001 is powered by the cable 24. The drive motor 1001 drives the outer cylinder 7 to rotate. The cable 24 passes through the mounting pipe 13 and the mounting cavity 11 and enters the transmission space 15. It will not rotate with the outer cylinder 7, which facilitates the power supply to the drive motor 1001.

[0048] In this embodiment, after the device is connected to the mixing shaft 28 via the connecting sleeve 1, the collecting cylinder 5, the outer cylinder 7, and the sampling cylinder 6 enter the soft soil foundation along with the mixing shaft 28. As the mixing shaft 28 sprays grout, agitates, and lifts for further agitation, the device moves accordingly. When sampling is required, samples can be taken at different locations within the cement-soil mixing pile based on the overall length of the cement-soil mixing pile and the lifting height of the mixing shaft 28. During sampling, the power supply to the drive motor 1001 is turned on, causing the drive motor 1001 to rotate and the electric outer cylinder 7 to rotate, thus connecting the sampling port 8 on the outer cylinder 7 with the sampling cylinder 6. The connection between the sampling port 8 and the sampling cylinder 6 can be determined by the gear ratio between the transmission gear 1003 and the transmission rack. For example, eight sets of sampling cylinders 6 are provided, with a spacing of 4 units between adjacent sampling cylinders 6. 5°, the transmission gear 1003 has 10 teeth and the transmission gear ring 1002 has 80 teeth. When the transmission gear 1003 rotates one revolution, the transmission gear ring 1002 rotates one-eighth of a revolution, so that the sampling port 8 is connected to the sampling cylinder 6. The duration of one revolution of the drive motor 1001 can be controlled by an external time relay. The time on the time relay is set according to the duration of one revolution of the drive motor 1001. The drive motor 1001 is a geared motor. In this way, the connection between the sampling port 8 and the sampling cylinder 6 can be controlled. When the stirring shaft 28 rotates, the sampling cylinder 6 and the outer cylinder 7 rotate accordingly. The cement soil is blocked by the mud guide plate 9 and guided into the sampling cylinder 6. By using different sampling cylinders 6 at different positions, sampling can be carried out as the stirring shaft 28 rotates.

[0049] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A sampling device for testing cement-soil mixing piles, characterized in that, include: The connecting assembly includes a detachable connecting sleeve (1) mounted on a stirring shaft (28) and a fixing member (2) provided on the connecting sleeve (1); the connecting sleeve (1) is provided with an anti-slip layer (3) inside and a connecting rod (4) on the connecting sleeve (1); the fixing member (2) drives the connecting sleeve (1) to abut against the stirring shaft (28) under the action of external force, thereby making the connecting sleeve (1) and the stirring shaft (28) fixedly connected; The sampling assembly includes a collection cylinder (5) mounted on a connecting rod (4) and multiple sampling cylinders (6) spaced apart within the collection cylinder (5); the collection cylinder (5) is fitted onto the outer wall of the stirring shaft (28), and an outer cylinder (7) is rotatably mounted on the outer wall of the collection cylinder (5); a sampling port (8) is provided on the outer cylinder (7); a mud guide plate (9) is provided on the sampling port (8); a driving component (10) is provided between the outer cylinder (7) and the collection cylinder (5); the driving component (10) rotates under the action of external force so that the sampling port (8) is connected to different sampling cylinders (6).

2. The cement-soil mixing pile testing and sampling device according to claim 1, characterized in that: The connecting sleeve (1) includes a left sleeve (101) and a right sleeve (102) that are connected to each other; the anti-slip layer (3) includes a rubber anti-slip pad (301) disposed on the inner wall of the left sleeve (101) and the right sleeve (102); the fastener (2) includes a bolt (201) disposed on the left sleeve (101) and the right sleeve (102) and a nut (202) disposed on the bolt (201).

3. The cement-soil mixing pile testing and sampling device according to claim 2, characterized in that: The collection cylinder (5) has an installation cavity (11) at its center; the stirring shaft (28) is located in the installation cavity (11); multiple placement cavities (12) are spaced apart on the outer wall of the collection cylinder (5); the sampling cylinder (6) is installed in the placement cavity (12).

4. The cement-soil mixing pile testing and sampling device according to claim 3, characterized in that: A gap is left between the inner wall of the outer cylinder (7) and the outer wall of the collecting cylinder (5) to form a transmission space (15); the driving component (10) includes a driving motor (1001) disposed on the outer wall of the collecting cylinder (5) and a transmission gear ring (1002) disposed on the inner wall of the outer cylinder (7); a transmission gear (1003) is provided between the driving motor (1001) and the transmission gear ring (1002).

5. The cement-soil mixing pile testing and sampling device according to claim 4, characterized in that: There is a gap between the end of the mud guide plate (9) connected to the outer cylinder (7) and the sampling port (8), and the end of the mud guide plate (9) away from the outer cylinder (7) is located above the sampling port (8). There is a gap between the mud guide plate (9) and the collection cylinder (5) to form a mud passage (22).

6. The cement-soil mixing pile testing and sampling device according to claim 5, characterized in that: It also includes a guide tube (23) set on the outer wall of the stirring shaft (28); a cable (24) is provided inside the guide tube; a cable channel (25) is provided on the collecting cylinder (5); the cable (24) passes through the cable channel (25) and is electrically connected to the drive motor (1001).

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