Pile body reinforcing device of cement mixing pile

Abstract

The utility model relates to a pile body reinforcing device of a cement mixing pile, which comprises a machine base, a pile body reinforcing device, a pile body reinforcing device, a pile body reinforcing device, a pile body reinforcing device and a pile body reinforcing device, and is characterized in that a guide frame is mounted on the upper surface of the machine base; the slurry supplementing mechanism comprises a slurry box, a drainage pipe, a material barrel, a spring, a trigger rod and a trigger switch, the material barrel is connected with the inner bottom wall of the slurry box through the spring, the trigger rod is fixedly installed on the surface of the material barrel, the trigger switch is fixedly installed on the surface of the slurry box, the drainage pipe is communicated with an input port of the material barrel and connected with a storage mechanism, and an electric valve is arranged in the drainage pipe; when the trigger switch is pressed by the trigger rod, the electric valve is opened; and the conveying mechanism is communicated with the output port of the material barrel through a deformable hose. The spring rebounds to drive the material barrel to move upwards, so that the trigger rod abuts against the trigger switch, the electric valve is opened, automatic grout supplementing is achieved, the problem that in the pile body reinforcing process, injected cement grout can break a pile is solved, and the pile body reinforcing efficiency and the pile body firmness are improved.

Description

Technical Field

[0001] This application relates to the field of pile reinforcement technology, and in particular to a pile reinforcement device for cement mixing piles. Background Technology

[0002] Current cement mixing pile reinforcement structures for soft soil foundations generally utilize a combination of rotary mixing drill rods and grouting drill rods to mix the weak soil layer with cement slurry, forming nail-shaped mixing piles for reinforcement.

[0003] When injecting cement grout into soft soil, the soil is first drilled using a drill rod. Then, a grout pump pumps the cement grout from the grout tank into the drill rod, which is then ejected from the output end. When the amount of cement grout in the grout tank is insufficient, it needs to be replenished promptly. Current replenishment methods rely mainly on manual labor, requiring workers to periodically check the remaining cement grout level in the tank. If it's lower than expected, cement is added. However, if workers fail to check and replenish in time, and the grout in the tank runs out, a gap in the cement grout supply to the drill rod occurs, leading to cement grout breakage in the injected soft soil and significantly reducing the pile's stability. Currently, no effective solution has been proposed to address the problem of cement grout breakage during pile reinforcement. Utility Model Content

[0004] This utility model provides a pile reinforcement device for cement mixing piles to solve the problem of pile breakage caused by the cement slurry injected during the pile reinforcement process.

[0005] This utility model provides a pile reinforcement device for cement mixing piles, comprising:

[0006] The base has a guide frame that is perpendicular to the ground fixedly installed on its upper surface by a support frame, and a drill rod is fixedly installed on the side of the guide frame;

[0007] The grouting mechanism includes a grout tank, a drainage pipe, a material bucket, a spring, a trigger rod, and a trigger switch. The material bucket is located inside the grout tank, and its lower surface is connected to the bottom wall of the grout tank via a spring. The trigger rod is fixedly installed on the surface of the material bucket, and the trigger switch is fixedly installed on the surface of the grout tank. The trigger switch is located directly above the trigger rod and on the movement trajectory of the trigger rod. The first end of the drainage pipe is connected to the inlet of the material bucket, and the second end is connected to a storage mechanism for storing cement grout. The second end of the drainage pipe is higher than the first end. An electric valve is provided in the drainage pipe. When the trigger switch is pressed by the trigger rod, the electric valve opens.

[0008] The transport mechanism is connected to the outlet of the hopper via a deformable hose and is used to transport the cement slurry in the hopper to the inlet of the drill pipe.

[0009] In some embodiments, the transport mechanism includes a grout pump and two grout delivery pipes. The inlet and outlet of the grout pump are connected to one end of each of the two grout delivery pipes, and the other ends of the two grout delivery pipes are connected to the inlet of the drill rod and a flexible hose, respectively.

[0010] In some embodiments, the storage mechanism includes:

[0011] The system includes a storage bin, a rotating rod, multiple stirring rods, and a drive motor. The output port of the storage bin is connected to the second end of the diversion pipe. The drive motor is fixedly installed on the lower surface of the storage bin, and its output shaft is coaxially fixed with the rotating rod. Multiple stirring rods are evenly fixedly installed on the rotating rod.

[0012] In some embodiments, the pile reinforcement device further includes:

[0013] A mortar mixing plant is used to produce cement slurry, and its output port is connected to the input port of a storage tank via a connecting pipe.

[0014] In some embodiments, the number of springs is set to four, and the four springs are evenly distributed around the axis of the barrel.

[0015] In some of these embodiments, the grout delivery pipe and connecting pipe connected to the outlet of the grout pump are designed with an upward slope and an angle of 75 degrees.

[0016] In some of these embodiments, the bottom of the storage bin is higher than or equal to the top of the hopper.

[0017] In some of these embodiments, the feed inlet of the hopper is located at its top, and the feed outlet of the hopper is located at the bottom of its side wall.

[0018] In some of these embodiments, the storage bin has a capacity three times that of the hopper.

[0019] In some of these embodiments, the hose is a flexible and bendable corrugated tube.

[0020] Compared with related technologies, the present invention has the following beneficial effects:

[0021] Under the action of the grouting mechanism, the cement grout in the initial state fills the material bucket. The spring is compressed under the gravity of the material bucket and the cement grout. Then, when the device starts working, the cement grout is transported from the material bucket to the drill rod through the transport mechanism. The amount of cement grout in the material bucket will gradually decrease, and the spring will then begin to rebound and move the material bucket vertically upward. At the same time, the trigger rod on the surface of the material bucket will also move with the material bucket. As the gravity of the cement grout continues to decrease, the rebound distance of the spring will also increase. Since the trigger switch is located directly above the trigger rod and its movement trajectory is affected by the degree of spring rebound, when the amount of cement grout is less than the rated value (about 2 / 3 of the material bucket content), the spring rebound causes the trigger rod to press against the trigger switch, and the electric valve will then open. The replenished cement grout will enter the material bucket from the first end of the diversion pipe, thus realizing automatic grouting without the need for manual monitoring and grouting. This solves the problem of pile breakage caused by the injected cement grout during the pile reinforcement process, and improves the efficiency of pile reinforcement and the stability of the pile.

[0022] Details of one or more embodiments of this application are set forth in the following drawings and description to make other features, objects and advantages of this application more readily apparent. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the cement mixing pile reinforcement device provided in this embodiment.

[0024] Figure 2 This is a partial three-dimensional structural diagram of the drill pipe and guide frame in this embodiment;

[0025] Figure 3 This is a partial structural cross-sectional view of the slurry tank and material bucket in this embodiment;

[0026] Figure 4 This is a partial structural cross-sectional view of the storage bin in this embodiment.

[0027] In the diagram: 1. Base; 2. Grout pump; 3. Grout tank; 4. Grout mixing station; 5. Guide frame; 6. Drill rod; 7. Grout delivery pipe; 8. Storage tank; 9. Connecting pipe; 10. Drainage pipe; 11. Material bucket; 12. Spring; 13. Trigger switch; 14. Trigger rod; 15. Drive motor; 16. Rotating rod; 17. Mixing rod; 18. Support frame. Detailed Implementation

[0028] 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.

[0029] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] Reference Figure 1 As shown in the figure, this embodiment provides a pile reinforcement device for cement mixing piles, which includes a base 1, a grouting mechanism, a transportation mechanism, a storage mechanism, and a grout mixing station 4.

[0031] Reference Figure 2 As shown, a guide frame 5 perpendicular to the ground is fixedly installed on the upper surface of the base 1 via a support frame 18. The angle between the support frame and the base 1 is approximately 75 degrees. A drill rod 6 is fixedly installed on the side of the guide frame 5. The drill rod 6 is parallel to the guide frame 5. The input end of the drill rod 6 is used for cement slurry to enter. The output end of the drill rod 6 can rotate and extend to drill holes in the soft soil and then spray out cement slurry.

[0032] Reference Figure 3As shown, the grouting mechanism includes a grout tank 3, a drainage pipe 10, a material bucket 11, a spring 12, a trigger rod 14, and a trigger switch 13. The material bucket 11 is located inside the grout tank 3, and its lower surface is connected to the inner bottom wall of the grout tank 3 via the spring 12. The side wall of the material bucket 11 slides in contact with the inner wall of the grout tank 3. The trigger rod 14 is fixedly installed on the surface of the material bucket 11 and is L-shaped. The trigger switch 13 is fixedly installed on the surface of the grout tank 3. The grout tank 3 is not sealed at the top; it has an inwardly protruding outer ring at the top. The trigger switch 13 is installed on the lower surface of the outer ring and faces downwards, triggering the switch simultaneously. The trigger switch 13 is located directly above the trigger rod 14 and on the movement trajectory of the trigger rod 14. The length of the movement trajectory of the trigger rod 14 is less than the extension length of the spring 12. The first end of the drain pipe 10 is connected to the inlet of the material bucket 11 and the second end is connected to a storage mechanism for storing cement slurry. The material bucket 11 is sealed, and the outlet at its top is connected to the first end of the drain pipe 10. The second end of the drain pipe 10 is higher than the first end. An electric valve is provided in the drain pipe 10. The electric valve is located near the first end interface of the drain pipe 10. When the trigger switch 13 is pressed by the trigger rod 14, the electric valve opens.

[0033] Specifically, refer to Figure 3 As shown, in the initial state, the cement slurry fills the container 11. The spring 12 is compressed under the weight of the container 11 and the cement slurry. When the device starts working, the cement slurry is output from the container 11, gradually decreasing in volume. The spring 12 then rebounds, moving the container 11 vertically upwards. Simultaneously, the trigger rod 14 on the surface of the container 11 moves along with the container 11. As the weight of the cement slurry continues to decrease, the rebound distance of the spring 12 increases. Since the trigger switch 13 is located directly above the trigger rod 14 and its trajectory is affected by the degree of rebound of the spring 12... Therefore, when the amount of cement slurry is less than the rated value (approximately 2 / 3 of the content in the hopper 11), the spring 12 rebounds to cause the trigger rod 14 to press against the trigger switch 13, and the electric valve opens. The supplemented cement slurry will enter the hopper 11 from the first end of the drain pipe 10. After the electric valve opens, it will automatically close after a delay (the delay time can be set according to the input speed of cement slurry in the drain pipe 10 to ensure that enough cement slurry is poured into the hopper 11 before the electric valve closes and to prevent the trigger switch 13 from being frequently triggered by the trigger rod 14).

[0034] Furthermore, in this embodiment, to increase the stability of the material bucket 11, the number of springs 12 is set to four, and the four springs 12 are evenly distributed around the axis of the material bucket 11. The four springs 12 are distributed in a square around the axis of the material bucket 11, so that they can evenly bear the weight from the material bucket 11 and the cement slurry and increase the stability of the material bucket 11. For example, the inlet of the material bucket 11 is located at its top, and the outlet of the material bucket 11 is located at the bottom of its side wall. The inlet of the material bucket 11 is located at the top to meet the condition that the material bucket 11 is filled with cement slurry in the initial state, and its outlet is located at the bottom of the side wall to facilitate the emptying of cement slurry. Furthermore, in this embodiment, the hose is a telescopic and flexible corrugated pipe. Since the material bucket 11 will rise or fall with the extension and retraction of the springs 12, the position of the outlet of the material bucket 11 relative to the slurry delivery pipe 7 will change slightly. Therefore, a telescopic corrugated pipe (corrugated pipe has good sealing and deformation capacity) is needed to connect them.

[0035] Reference Figure 3 As shown, the transport mechanism is connected to the output port of the material bucket 11 via a deformable hose and is used to transport the cement slurry in the material bucket 11 to the input end of the drill rod 6. The output port of the material bucket 11 is located at the bottom of its side wall.

[0036] Furthermore, refer to Figure 1 and Figure 3 As shown, in this embodiment, the transport mechanism includes a grout pump 2 and two grout delivery pipes 7. The inlet and outlet of the grout pump 2 are respectively connected to one end of the two grout delivery pipes 7, and the other ends of the two grout delivery pipes 7 are respectively connected to the inlet of the drill rod 6 and a flexible hose. An outlet is provided on the side wall of the grout tank 3, with one side of the outlet connected to a grout delivery pipe 7 and the other side connected to a flexible hose. The grout pump 2 is used to provide pumping power, and the power direction is from the inlet to the outlet of the grout pump 2, so that the cement grout in the entire device flows from the storage mechanism to the material bucket 11 and then to the drill rod 6.

[0037] Furthermore, refer to Figure 4As shown, in this embodiment, the storage mechanism includes a storage bin 8, a rotating rod 16, multiple stirring rods 17, and a drive motor 15. The input port of the storage bin 8 is located at the top of its side wall, and the output port of the storage bin 8 is connected to the second end of the drain pipe 10. The drive motor 15 is fixedly installed on the lower surface of the storage bin 8, and its output shaft is coaxially fixed with the rotating rod 16. The multiple stirring rods 17 are evenly fixedly installed on the rotating rod 16. The produced cement slurry is stored in the storage bin 8. When the drive motor 15 is started, its output shaft will drive the rotating rod 16 to rotate, thereby driving the multiple stirring rods 17 evenly distributed on the rotating rod 16 to fully stir the cement slurry and effectively prevent the cement slurry from solidifying. For example, to accelerate the flow rate of cement slurry in the drainage pipe 10, the bottom of the storage tank 8 is higher than or equal to the top of the material bucket 11. Multiple support legs are installed at the bottom of the storage tank 8 to raise it, creating a height difference between the storage tank 8 and the material bucket. Due to gravity, the cement slurry tends to flow towards the drainage pipe 10, increasing its flow rate and accelerating the replenishment efficiency. Furthermore, the capacity of the storage tank 8 is three times that of the material bucket 11. Because the cement slurry in the material bucket 11 originates from the storage tank 8, the capacity of the storage tank 8 needs to be large enough to store sufficient freshly produced cement slurry, preventing insufficient cement slurry supply in the storage tank 8.

[0038] Reference Figure 1 As shown, the mortar mixing plant 4 is used to produce cement slurry, and its output port is connected to the input port of the storage tank 8 via a connecting pipe 9. The bottom of the mortar mixing plant 4 is funnel-shaped, and the funnel opening is the output port of the mortar mixing plant 4. The mortar mixing plant 4 can be used to produce cement slurry. Raw materials are put into the mortar mixing plant 4, then mixed and stirred to form cement slurry. Finally, the formed cement slurry is sent to the storage tank 8 for further mixing and storage through the connecting pipe 9. For example, the slurry delivery pipe 7 connected to the output port of the mortar pump 2 and the connecting pipe 9 both have a slope design, with an upward slope and an angle of 75 degrees. The slope can affect the flow state and velocity distribution of the fluid. The first end of the connecting pipe 9 is connected to the output port of the mortar mixing plant 4, and the second end is connected to the input port of the storage tank 8 after the slope. The first end of the slurry delivery pipe 7 is connected to the output port of the mortar pump 2, and the second end is connected to the input end of the drill rod 6 after the slope. By designing a slope that is upward with an angle of 75 degrees, the flow characteristics of fluid in the pipeline can be optimized, energy loss can be reduced, and transportation efficiency can be improved.

[0039] In summary, in this embodiment, initially, the cement slurry fills the bucket 11, and the spring 12 is compressed under the weight of the bucket 11 and the cement slurry. Then, when the device starts working, the cement slurry is transported from the bucket 11 to the drill rod 6 via a transport mechanism. The amount of cement slurry in the bucket 11 gradually decreases, and the spring 12 immediately begins to rebound, moving the bucket 11 vertically upwards. Simultaneously, the trigger rod 14 on the surface of the bucket 11 also moves with the bucket 11. As the weight of the cement slurry continues to decrease, the rebound distance of the spring 12 increases. Since the trigger switch 13 is located directly above the trigger rod 14 and its trajectory is affected by the rebound of the spring 12, when the amount of cement slurry is less than the rated value (larger...), the spring 12 will rebound. When the cement slurry in the hopper 11 is approximately 2 / 3 full, the spring 12 rebounds, causing the trigger rod 14 to press against the trigger switch 13. The electric valve then opens, allowing the replenished cement slurry to enter the hopper 11 from the first end of the drainage pipe 10. The electric valve can automatically close after a delay (the delay time can be set according to the input speed of the cement slurry in the drainage pipe 10 to ensure sufficient cement slurry is poured into the hopper 11 before the electric valve closes and to prevent the trigger switch 13 from being frequently triggered by the trigger rod 14). This achieves automatic slurry replenishment, eliminating the need for manual monitoring and replenishment. This solves the problem of pile breakage caused by injected cement slurry during pile reinforcement, improving the efficiency and stability of pile reinforcement. It should be noted that the trigger switch 13 can be a switch that generates an electrical signal when pressed. This type of switch is common in current technology, such as the switch controlling door opening in an access control system. The electric valve can be configured to start working when the aforementioned electrical signal is generated and stop working after a preset cycle. The preset period can be 3 minutes or 5 minutes, etc.

[0040] It should be understood that the specific embodiments described herein are merely illustrative of the application and not intended to limit it. All other embodiments derived by those skilled in the art based on the embodiments provided in this application without inventive effort are within the scope of protection of this application.

[0041] Obviously, the accompanying drawings are merely some examples or embodiments of this application. Those skilled in the art can apply this application to other similar situations based on these drawings without any creative effort. Furthermore, it is understood that although the work done in this development process may be complex and lengthy, for those skilled in the art, certain design, manufacturing, or production modifications made based on the technical content disclosed in this application are merely conventional technical means and should not be considered as insufficient disclosure of this application.

Claims

1. A pile reinforcement device for cement mixing piles, characterized in that, include: The base (1) has a guide frame (5) that is perpendicular to the ground fixedly installed on its upper surface by a support frame (18), and a drill rod (6) is fixedly installed on the side of the guide frame (5); The grouting mechanism includes a grout tank (3), a drain pipe (10), a material bucket (11), a spring (12), a trigger rod (14), and a trigger switch (13). The material bucket (11) is located inside the grout tank (3), and the lower surface of the material bucket (11) is connected to the bottom wall of the grout tank (3) through the spring (12). The trigger rod (14) is fixedly installed on the surface of the material bucket (11), and the trigger switch (13) is fixedly installed on the surface of the grout tank (3). The trigger switch (13) is located directly above the trigger rod (14) and on the movement trajectory of the trigger rod (14). The first end of the drain pipe (10) is connected to the inlet of the material bucket (11), and the second end is connected to a storage mechanism for storing cement grout. The second end of the drain pipe (10) is higher than the first end. An electric valve is provided in the drain pipe (10). When the trigger switch (13) is pressed by the trigger rod (14), the electric valve opens. The transport mechanism is connected to the outlet of the bucket (11) via a deformable hose and is used to transport the cement slurry in the bucket (11) to the input end of the drill rod (6).

2. The pile reinforcement device for cement mixing piles according to claim 1, characterized in that, The transport mechanism includes a grout pump (2) and two grout delivery pipes (7). The inlet and outlet of the grout pump (2) are connected to one end of the two grout delivery pipes (7), and the other end of the two grout delivery pipes (7) are connected to the inlet of the drill rod (6) and the hose, respectively.

3. The pile reinforcement device for cement mixing piles according to claim 1, characterized in that, Storage facilities include: The storage box (8), rotating rod (16), multiple stirring rods (17) and drive motor (15) are connected. The output port of the storage box (8) is connected to the second end of the diversion pipe (10). The drive motor (15) is fixedly installed on the lower surface of the storage box (8) and its output shaft is fixed coaxially with the rotating rod (16). Multiple stirring rods (17) are evenly fixed on the rotating rod (16).

4. The pile reinforcement device for cement mixing piles according to claim 3, characterized in that, The pile reinforcement device also includes: The mortar mixing plant (4) is used to produce cement slurry and its outlet is connected to the inlet of the storage tank (8) via a connecting pipe (9).

5. The pile reinforcement device for cement mixing piles according to claim 1, characterized in that, The number of springs (12) is set to four, and the four springs (12) are evenly distributed around the axis of the material barrel (11).

6. The pile reinforcement device for cement mixing piles according to claim 4, characterized in that, The grout delivery pipe (7) and the connecting pipe (9) connected to the output port of the grout pump (2) both have a slope design, with an upward slope and a slope angle of 75 degrees.

7. The pile reinforcement device for cement mixing piles according to claim 3, characterized in that, The bottom of the storage bin (8) is higher than or equal to the top of the bucket (11).

8. The pile reinforcement device for cement mixing piles according to claim 1, characterized in that, The inlet of the material barrel (11) is located at its top, and the outlet of the material barrel (11) is located at the bottom of its side wall.

9. The pile reinforcement device for cement mixing piles according to claim 3, characterized in that, The capacity of the storage bin (8) is three times that of the material bucket (11).

10. The pile reinforcement device for cement mixing piles according to claim 1, characterized in that, The hose is a flexible and bendable corrugated tube.

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