A post-grouting device for cast-in-place piles

Abstract

This utility model provides a grouting device for bored piles, relating to the field of grouting technology. It includes a mixing tank connected to a conveying pipe, a diversion mechanism at the end of the conveying pipe, a grouting mechanism mounted on the diversion mechanism, and a sealing mechanism on the grouting mechanism. This utility model connects a grouting frame to multiple second interfaces via multiple second threaded sleeves, and connects subsequent grouting frames to previous grouting frames via multiple second threaded sleeves, thus facilitating the assembly of grouting frames of appropriate height according to the drilling depth. Multiple first threaded sleeves connect multiple conduits to multiple first interfaces, thereby facilitating the installation of the grouting device and improving construction efficiency.

Description

Technical Field

[0001] This utility model relates to the field of grouting technology, specifically to a post-grouting device for bored piles. Background Technology

[0002] The post-grouting device for bored piles is a precision engineering device consisting of pre-embedded pipelines, ground power and control equipment. Through its unique one-way valve nozzle design and high-pressure grouting capability, it directly targets the defects of traditional bored piles such as sediment, mud skin, and concrete shrinkage, and precisely injects grout into the target area to consolidate sediment, eliminate mud skin, and reinforce the soil.

[0003] Existing technologies for post-grouting devices for bored piles, such as Chinese Patent No. CN222990736U, disclose a pile foundation grouting device, including a grouting pipe, a one-way valve, and a flushing assembly. The grouting pipe has an inlet at one end and an outlet at the other, with the one-way valve installed at the outlet. The flushing assembly includes a flushing pipe and a flushing valve. The flushing pipe connects to the end of the grouting pipe near the inlet, and the flushing valve is installed on the flushing pipe to control the flow of the flushed pipe. First, the grouting pipe is extended into the area to be poured. Then, grout is introduced into the inlet, and the grout flows into the area to be poured through the outlet. Because a one-way valve is installed at the outlet, it prevents grout from flowing back into the grouting pipe from the pouring area. After the pouring is completed, the flushing valve can be opened, and water can be introduced into the grouting pipe through the flushing pipe. This water flow flushes the inner wall of the grouting pipe, preventing solidified grout from adhering to the inner wall.

[0004] In the above-mentioned grouting devices, most of the grouting pipes are prefabricated and transported to the construction site. The pipe length cannot be flexibly adjusted according to the drilling depth. When encountering ultra-deep pile foundations, it is necessary to customize grouting pipes of special length, resulting in poor construction adaptability and high storage costs. The grouting holes are exposed to the pile hole environment for a long time. During the concrete pouring or soil backfilling process, mud and debris can easily invade the hole, causing blockage of the grouting channel. Utility Model Content

[0005] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a post-grouting device for bored piles.

[0006] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:

[0007] An embodiment of this utility model provides a post-grouting device for bored piles, including a mixing tank, a conveying pipe, and a grouting mechanism, wherein the conveying pipe connects the mixing tank and the grouting mechanism;

[0008] The grouting mechanism includes a diversion mechanism and multiple grouting frames, which are connected side by side in the vertical direction;

[0009] The diversion mechanism includes a top shell and multiple conduits, with one end of each conduit installed in the top shell;

[0010] The grouting frame is provided with multiple guide pipes, and the multiple guide pipes are connected to the multiple conduits one by one, and the guide pipes are provided with multiple round holes.

[0011] Furthermore, a sealing mechanism is provided between the grouting frame and the diversion mechanism;

[0012] The sealing mechanism includes a ring shell, multiple first interfaces, and multiple second interfaces;

[0013] Multiple first interfaces and multiple second interfaces are evenly arranged on the two end faces of the annular shell, and the multiple first interfaces and multiple second interfaces correspond one-to-one and are interconnected with each other;

[0014] Each of the multiple conduits has a first threaded sleeve at the end furthest from the top shell, and the first threaded sleeve is connected to the first interface;

[0015] Each of the multiple flow guide tubes corresponds one-to-one with a multiple of the second interfaces, and a second threaded sleeve is provided between the flow guide tube and the second interface.

[0016] Furthermore, the sealing mechanism is also provided with abutting components and supporting components. One supporting component corresponds to two abutting components. The abutting components are installed on the ring shell. The supporting components are connected to the abutting components. There are multiple supporting components. The supporting components are used to connect two adjacent grouting frames side by side in the vertical direction.

[0017] Furthermore, the abutting assembly includes an abutting frame and an abutting bolt. The abutting frame is adjustablely mounted on the annular shell, and the abutting bolt is threadedly mounted on the annular shell. Through thread adjustment, the end of the abutting bolt abuts against the abutting frame.

[0018] Furthermore, the support assembly includes a movable plate, a pair of insert shells, and a pair of insert blocks, wherein the insert shells and the insert blocks are respectively installed at both ends of the movable plate;

[0019] The movable plate corresponds to any of the aforementioned guide tubes;

[0020] The insert of one of the support components can be used to insert the abutment frame or to insert the insert of another of the support components.

[0021] Furthermore, two adjacent guide pipes are fixedly connected by a connecting plate;

[0022] Both sides of the guide tube are provided with circular sleeves, and the circular sleeves are fixedly installed on the connecting plate. The circular sleeves are used to movably connect with the support component.

[0023] Furthermore, the support assembly also includes a spring and a telescopic block;

[0024] The telescopic block is fixedly connected to the movable plate, and the two telescopic blocks are located on both sides of the movable plate;

[0025] One end of the spring is fixedly connected to the telescopic block, and the other end of the spring extends into the inner wall of the circular sleeve and abuts against the circular sleeve.

[0026] Furthermore, the movable plate has multiple holes in the vertical direction. When installing the support assembly, the multiple holes are adjusted to correspond one-to-one with the circular holes of the guide pipe by adjusting the spring and the telescopic block.

[0027] The above-described solution of this utility model has at least the following beneficial effects:

[0028] In this invention, multiple second threaded sleeves are used to connect the grouting frame to multiple second interfaces, and subsequent grouting frames are connected to the previous grouting frame through multiple second threaded sleeves. This makes it easy to splice grouting frames of appropriate height according to the drilling depth. Multiple first threaded sleeves are used to connect multiple conduits to multiple first interfaces, which facilitates the installation of the grouting device and improves construction efficiency.

[0029] In this invention, when assembling the grouting frames, the insert block on one grouting frame is inserted into the inner side of the insert shell on another grouting frame. By turning multiple abutment bolts, the abutment bolts abut against the insert shell on the topmost grouting frame through the abutment frame. Through the cooperation of the insert shells and insert blocks on multiple grouting frames, multiple movable plates are driven to move under the action of spring force via telescopic blocks, so that the holes of the movable plates correspond to the multiple round holes on the grouting frame, so as to facilitate grouting work. The movable plates can prevent the round holes of the grouting frame from being blocked by foreign objects during installation, thus preventing grouting from being obstructed. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0031] Figure 2 This is a three-dimensional structural diagram of the top shell of this utility model;

[0032] Figure 3 This is a three-dimensional structural diagram of the grouting frame of this utility model;

[0033] Figure 4 This is a schematic diagram of the annular shell explosion structure of this utility model;

[0034] Figure 5 This is a schematic diagram of the exploded structure of the insert block of this utility model.

[0035] Explanation of reference numerals in the attached figures:

[0036] 1. Mixing tank; 2. Delivery pipe; 3. Top shell; 4. Guide pipe; 5. First threaded sleeve; 6. First interface; 7. Ring shell; 8. Second interface; 9. Second threaded sleeve; 10. Grouting frame; 11. Round hole; 12. Round sleeve; 13. Spring; 14. Telescopic block; 15. Movable plate; 16. Insert shell; 17. Insert block; 18. Abutment frame; 19. Abutment bolt. Detailed Implementation

[0037] Exemplary embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this invention will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0038] like Figures 1 to 5 As shown, an embodiment of this utility model provides a post-grouting device for bored piles, including a mixing tank 1, a conveying pipe 2, and a grouting mechanism. The conveying pipe 2 connects the mixing tank 1 and the grouting mechanism. The grouting mechanism includes a diversion mechanism and multiple grouting frames 10, which are connected side by side in the vertical direction. The diversion mechanism includes a top shell 3 and multiple conduits 4, with one end of each conduit 4 installed on the top shell 3. Each grouting frame 10 is provided with multiple guide pipes, which are connected one-to-one with each of the multiple conduits 4, and each guide pipe is provided with multiple circular holes 11.

[0039] In this embodiment of the utility model, the workers put the raw materials into the mixing tank 1 to make slurry. After the slurry is made, the mixing tank 1 is controlled to transport the slurry to the grouting mechanism through the conveying pipe 2 and the diversion mechanism, so as to carry out the grouting work after drilling and injection.

[0040] Furthermore, a sealing mechanism is provided between the grouting frame 10 and the diversion mechanism; the sealing mechanism includes an annular shell 7, multiple first interfaces 6 and multiple second interfaces 8; the multiple first interfaces 6 and multiple second interfaces 8 are evenly distributed on the two end faces of the annular shell 7, and the multiple first interfaces 6 and multiple second interfaces 8 correspond one-to-one and are interconnected; the ends of the multiple guide tubes 4 away from the top shell 3 are each provided with a first threaded sleeve 5, and the first threaded sleeve 5 is connected to the first interface 6; the multiple guide tubes correspond one-to-one with the multiple second interfaces 8, and a second threaded sleeve 9 is provided between the guide tubes and the second interfaces 8.

[0041] In this invention, the grout is moved into the inner side of the grouting frame 10 through the top shell 3, conduit 4, first interface 6, ring shell 7, and second interface 8, and finally flows out through multiple round holes 11. Specifically, the grouting frame 10 is connected to multiple second interfaces 8 through multiple second threaded sleeves 9. At the same time, for multiple grouting frames 10 connected side by side, multiple second threaded sleeves 9 are connected to the previous grouting frame 10, so as to facilitate the splicing of grouting frames 10 of appropriate height according to the drilling depth. Multiple conduits 4 are connected to multiple first interfaces 6 through multiple first threaded sleeves 5. The raw materials are put into the mixing tank 1 to make grout. After the grout is made, the mixing tank 1 is controlled to transport the grout to the grouting mechanism through the conveying pipe 2 and the diversion mechanism, so as to carry out the grouting work after drilling and grouting.

[0042] Understandably, multiple first threaded sleeves 5 connect multiple conduits 4 to multiple first interfaces 6, and multiple second threaded sleeves 9 connect the guide pipe to the second interface 8, or connect two guide pipes in the vertical direction through multiple second threaded sleeves 9, which facilitates the installation of the grouting device and improves construction efficiency. At the same time, multiple grouting frames 10 are connected side by side in the vertical direction, which makes it easy to splice grouting frames 10 of appropriate height according to the drilling depth.

[0043] Furthermore, the sealing mechanism is also provided with abutting components and supporting components. One supporting component corresponds to two abutting components. The abutting components are installed on the ring shell 7. The supporting components are connected to the abutting components. There are multiple supporting components. The supporting components are used to connect two adjacent grouting frames 10 side by side in the vertical direction.

[0044] Furthermore, the abutment assembly includes an abutment frame 18 and an abutment bolt 19. The abutment frame 18 is adjustablely mounted on the ring housing 7, and the abutment bolt 19 is threadedly mounted on the ring housing 7. By adjusting the thread, the end of the abutment bolt 19 abuts against the abutment frame 18.

[0045] Furthermore, the support assembly includes a movable plate 15, a pair of insert shells 16 and a pair of insert blocks 17, with the insert shells 16 and insert blocks 17 respectively installed at both ends of the movable plate 15; the movable plate 15 corresponds to any of the guide tubes; the insert shell 16 of one support assembly can be used to insert into the abutment frame 18 or to insert into the insert block 17 of another support assembly.

[0046] Furthermore, two adjacent guide tubes are fixedly connected by a connecting plate; both sides of a guide tube are provided with a circular sleeve 12, and the circular sleeve 12 is fixedly installed on the connecting plate. The circular sleeve 12 is used to movably connect with the support component.

[0047] Furthermore, the support assembly also includes a spring 13 and a telescopic block 14; the telescopic block 14 is fixedly connected to the movable plate 15, and the two telescopic blocks are located on both sides of the movable plate 15; one end of the spring 13 is fixedly connected to the telescopic block 14, and the other end of the spring 13 extends into the inner wall of the sleeve 12 and abuts against the sleeve 12.

[0048] Furthermore, the movable plate 15 has multiple holes in the vertical direction. When installing the support assembly, the multiple holes are adjusted by adjusting the spring 13 and the telescopic block 14 so that they correspond one-to-one with the round holes 11 of the guide pipe.

[0049] In this invention, when splicing multiple grouting frames 10, the insert block 17 on one grouting frame 10 is inserted into the insert shell 16 on another grouting frame 10. For a grouting frame 10 adjacent to the annular shell 7, an abutment frame 18 is inserted into the insert shell 16 of that grouting frame 10. Then, by sequentially tightening multiple abutment bolts 19, the ends of the abutment bolts 19 abut against the abutment frame 18. Through the mutual cooperation of the insert shells 16 and insert blocks 17 on the multiple grouting frames 10, the connection between the annular shell 7 and the multiple grouting frames 10 is achieved. Multiple movable plates 15 move under the action of spring 13 via telescopic blocks 14, so that the holes of the movable plates 15 correspond to the multiple round holes 11 on the grouting frame 10. This allows the grout to move into the inner side of the grouting frame 10 through the top shell 3, guide tube 4, first interface 6, ring shell 7 and second interface 8, and finally flow out through the multiple round holes 11 to facilitate grouting. At the same time, the movable plates 15 can prevent the round holes 11 of the grouting frame 10 from being blocked by foreign objects during installation, thus preventing grouting from being obstructed.

[0050] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A post-grouting device for bored cast-in-place piles, characterized in that: It includes a mixing tank, a conveying pipe, and a grouting mechanism, wherein the conveying pipe connects the mixing tank and the grouting mechanism; The grouting mechanism includes a diversion mechanism and multiple grouting frames, which are connected side by side in the vertical direction; The diversion mechanism includes a top shell and multiple conduits, with one end of each conduit installed in the top shell; The grouting frame is provided with multiple guide pipes, and the multiple guide pipes are connected to the multiple conduits one by one, and the guide pipes are provided with multiple round holes.

2. The post-grouting device for bored piles according to claim 1, characterized in that: A sealing mechanism is provided between the grouting frame and the diversion mechanism; The sealing mechanism includes a ring shell, multiple first interfaces, and multiple second interfaces; Multiple first interfaces and multiple second interfaces are evenly arranged on the two end faces of the annular shell, and the multiple first interfaces and multiple second interfaces correspond one-to-one and are interconnected with each other; Each of the multiple conduits has a first threaded sleeve at the end furthest from the top shell, and the first threaded sleeve is connected to the first interface; Each of the multiple flow guide tubes corresponds one-to-one with a multiple of the second interfaces, and a second threaded sleeve is provided between the flow guide tube and the second interface.

3. The post-grouting device for bored piles according to claim 2, characterized in that: The sealing mechanism is further provided with abutting components and supporting components. One supporting component corresponds to two abutting components. The abutting components are installed on the ring shell. The supporting components are connected to the abutting components. There are multiple supporting components. The supporting components are used to connect two adjacent grouting frames side by side in the vertical direction.

4. The post-grouting device for bored piles according to claim 3, characterized in that: The abutting assembly includes an abutting frame and an abutting bolt. The abutting frame is adjustablely mounted on the annular shell, and the abutting bolt is threadedly mounted on the annular shell. By adjusting the thread, the end of the abutting bolt abuts against the abutting frame.

5. A post-grouting device for bored piles according to claim 4, characterized in that: The support assembly includes a movable plate, a pair of insert shells, and a pair of insert blocks, wherein the insert shells and the insert blocks are respectively installed at both ends of the movable plate; The movable plate corresponds to any of the aforementioned guide tubes; The insert of one of the support components can be used to insert the abutment frame or to insert the insert of another of the support components.

6. A post-grouting device for bored piles according to claim 5, characterized in that: The two adjacent guide tubes are fixedly connected by a connecting plate; Both sides of the guide tube are provided with circular sleeves, and the circular sleeves are fixedly installed on the connecting plate. The circular sleeves are used to movably connect with the support component.

7. A post-grouting device for bored piles according to claim 6, characterized in that: The support assembly also includes a spring and a telescopic block; The telescopic block is fixedly connected to the movable plate, and the two telescopic blocks are located on both sides of the movable plate; One end of the spring is fixedly connected to the telescopic block, and the other end of the spring extends into the inner wall of the circular sleeve and abuts against the circular sleeve.

8. A post-grouting device for bored piles according to claim 7, characterized in that: The movable plate has multiple holes in the vertical direction. When installing the support assembly, the multiple holes are adjusted to correspond one-to-one with the circular holes of the guide pipe by adjusting the spring and the telescopic block.

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