Post-grouting device for cast-in-place pile and construction method

Abstract

The post-grouting device comprises a supporting trolley, a slurry box is fixedly mounted in the supporting trolley, a feeding hopper is fixedly connected to the top of the slurry box, and a transfer pump is fixedly connected to the side wall of the top end of the slurry box; the post-grouting device for the cast-in-place pile comprises a supporting trolley, a slurry box is arranged at one end of the supporting trolley, a material pumping pump is arranged at the bottom end of the slurry box, a flow guide pipe is fixedly communicated between the material pumping pump and the bottom end of the slurry box, the other end of the material pumping pump is communicated with a conveying pipe, one end of the conveying pipe is fixedly communicated with a grouting pipe, and a penetrating opening corresponding to the grouting pipe is formed in the bottom of the supporting trolley. And the lifting process is stable, manpower is saved, the grouting pipe does not need to be manually pulled for lifting in the grouting process, and more convenience is achieved.

Description

Technical Field

[0001] The present invention relates to the field of building construction related products, and specifically relates to a post-grouting device and construction method for cast-in-place piles. Background Art

[0002] The post-grouting technology for cast-in-place piles is a method of pressurizing and injecting the prepared cement slurry into the inner pipe of the pile through a grouting pump, and then injecting it into the surrounding medium through the grouting valve at the bottom or side of the pile. During the bottom grouting process, the slurry will be pressed into the bottom sediment of the pile and the soil within a certain range around it by infiltrating into coarse-grained soil and splitting fine-grained soil, and will spread upward along the weak soil interface to a range of 10 - 20m or even higher above the pile bottom;

[0003] In current building projects, grouting equipment is usually used during grouting. There are still certain defects in the existing grouting equipment during use, such as;

[0004] When the existing grouting equipment pours concrete into the pile hole, it usually requires workers to slowly lift the grouting pipe while pouring concrete into the pile hole, which is time-consuming and laborious and has defects. Summary of the Invention

[0005] The purpose of the present invention is to provide a post-grouting device and construction method for cast-in-place piles to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A post-grouting device for cast-in-place piles, including a support trolley, a slurry tank is fixedly installed inside the support trolley, a feed hopper is fixedly connected to the top of the slurry tank, a pumping pump is fixedly connected to the side wall at the top end of the slurry tank, a diversion pipe is fixedly connected and communicated between the pumping pump and the bottom end of the slurry tank, the other end of the pumping pump is communicated with a delivery pipe, one end of the delivery pipe is fixedly connected and communicated with a grouting pipe, and a through hole corresponding to the grouting pipe is provided at the bottom of the support trolley;

[0007] A traction plate is fixedly connected to the outer wall of one side of the support trolley, a rotating rod is rotatably inserted on the traction plate, a first bevel gear is fixedly connected to one end of the rotating rod, a second bevel gear is provided below the first bevel gear, a traction rod is fixedly connected to the bottom of the second bevel gear, a third bevel gear is fixedly connected to the bottom end of the traction rod, a fourth bevel gear meshing with the third bevel gear is provided at the bottom of the third bevel gear, a connecting rod is fixedly inserted on the fourth bevel gear, a driving wheel is fixedly sleeved on the connecting rod, a driven wheel is provided on one side of the driving wheel, the driving wheel and the driven wheel are connected by a connecting belt, a shaft rod is fixedly inserted on the driven wheel, the shaft rod is rotatably connected to the inner wall of the support trolley, a flat gear is fixedly connected to one end of the shaft rod, a toothed plate is fixedly connected to the outer side wall of the grouting pipe, and the flat gear meshes with the toothed plate;

[0008] One end of the rotating rod away from the first bevel gear is fixedly connected with a handwheel. A stop rod is slidably inserted into the handwheel. A plurality of stop grooves corresponding to the stop rod are arranged on the traction plate. One end of the stop rod is fixedly connected with a positioning block, and the other end of the stop rod is fixedly connected with a pull rod. A spring is sleeved on the stop rod, and two ends of the spring are respectively fixedly connected with the positioning block and the handwheel.

[0009] Preferably, four moving mechanisms are fixedly installed at the bottom of the support trolley. All four moving mechanisms are universal self-locking wheels and are respectively fixed at the four corners of the bottom of the support trolley.

[0010] Preferably, T-shaped guide blocks are fixedly connected to the outer walls on both sides of the grouting pipe. Guide grooves corresponding to the T-shaped guide blocks are arranged on the inner wall of the through hole of the support trolley.

[0011] Preferably, two symmetrically arranged holding handles are fixedly connected to one side of the top end of the traction plate.

[0012] Preferably, a cross plate is fixedly connected to the top of one end of the support trolley. A through hole is arranged on the cross plate, and a first bearing is installed in the through hole. The traction rod is fixedly inserted into the first bearing.

[0013] Preferably, a bearing groove is arranged on the traction plate, and a second bearing is fixedly installed in the bearing groove. The rotating rod is fixedly inserted into the second bearing.

[0014] Preferably, both the driving wheel and the driven wheel are belt wheels, and the connecting belt is a belt.

[0015] A construction method of a post-grouting device for cast-in-place piles includes the following steps:

[0016] Step 1: Move to above the cast-in-place pile through the moving mechanisms on the bottom of the support trolley.

[0017] Step 2: Pull the pull rod to drive the stop rod to slide on the traction plate. The positioning block installed on the stop rod will compress the spring, release the fixation between the stop rod and the traction plate, and unlock the rotating rod.

[0018] Step 3: Rotate the rotating rod to make the first bevel gear mesh with the second bevel gear to rotate. The traction rod will make the third bevel gear mesh with the fourth bevel gear to rotate to realize the rotation of the connecting rod. The driving wheel on the connecting rod will make the driven wheel rotate through the connecting belt to realize the rotation of the shaft rod. The shaft rod will make the spur gear rotate and then mesh with the toothed plate on the outer wall of the grouting pipe. The grouting pipe moves downward in the through hole of the support trolley and falls to the bottom of the cast-in-place pile. Then release the stop rod and insert it into the corresponding stop groove to realize the fixation of the linkage mechanism.

[0019] Step 4: Inject slurry into the slurry tank through the feed hopper. Control the pumping pump to draw out the slurry through the diversion pipe, and the slurry is transported to the grouting pipe through the conveying pipe to achieve grouting.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] For the post - grouting device for cast - in - place piles, the movement of the position is realized through the moving mechanism on the bottom of the support trolley. When moving above the cast - in - place pile, pull the pull rod to drive the stop rod to slide on the traction plate. The positioning block installed on the stop rod will compress the compression spring, and then rotate the rotating rod to make the first bevel gear mesh with the second bevel gear to rotate. At the same time, the traction rod on the bottom will make the third bevel gear mesh with the fourth bevel gear to rotate to realize the rotation of the connecting rod. At this time, the driving wheel installed on the connecting rod will make the driven wheel rotate through the connecting belt to realize the rotation of the shaft rod. The shaft rod will make the flat gear rotate and then mesh with the toothed plate on the outer wall of the grouting pipe. At this time, the grouting pipe moves downward in the through - hole on the support trolley and falls to the bottom of the cast - in - place pile, and then loosen the stop rod and insert it into the corresponding stop groove to realize the fixation of the linkage mechanism;

[0022] For the post - grouting device for cast - in - place piles, inject slurry into the slurry tank through the feed hopper. Control the pumping pump to draw out the slurry through the diversion pipe, and the slurry is transported to the grouting pipe through the conveying pipe to achieve grouting;

[0023] The post - grouting device for cast - in - place piles can adjust the height of the grouting pipe, and the lifting process is stable, saving manpower. Moreover, during the grouting process, there is no need to manually pull the grouting pipe for lifting, which is more convenient. Description of the Drawings

[0024] Figure 1 It is a schematic structural diagram of a post - grouting device for cast - in - place piles of the present invention;

[0025] Figure 2 It is an enlarged view of part A of a post - grouting device for cast - in - place piles of the present invention;

[0026] Figure 3 It is a schematic diagram of the connection of the connecting belt of a post - grouting device for cast - in - place piles of the present invention;

[0027] Figure 4 It is a schematic diagram of the T - shaped guide block of a post - grouting device for cast - in - place piles of the present invention.

[0028] In the figure: 1. Support trolley; 2. Slurry tank; 3. Feeding hopper; 4. Material pumping pump; 5. Diversion pipe; 6. Delivery pipe; 7. Grouting pipe; 8. Traction plate; 9. Rotating rod; 10. First bevel gear; 11. Second bevel gear; 12. Traction rod; 13. Third bevel gear; 14. Fourth bevel gear; 15. Connecting rod; 16. Driving wheel; 17. Driven wheel; 18. Connecting belt; 19. Shaft rod; 20. Plain gear; 21. Toothed plate; 22. Handwheel; 23. Stop rod; 24. Positioning block; 25. Pull rod; 26. Spring; 27. Moving mechanism; 28. T-shaped guide block; 29. Holding handle; 30. Cross plate; 31. First bearing; 32. Second bearing. Detailed implementation manner

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0030] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0031] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "provided with", "connection", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0032] Please refer to Figures 1-4 , an embodiment provided by the present invention: A post-grouting device and construction method for cast-in-place piles, including a support trolley 1, a slurry tank 2 is fixedly installed in the support trolley 1, a feeding hopper 3 is fixedly connected to the top of the slurry tank 2, a material pumping pump 4 is fixedly connected to the side wall of the top end of the slurry tank 2, a diversion pipe 5 is fixedly connected and communicated between the material pumping pump 4 and the bottom end of the slurry tank 2, the other end of the material pumping pump 4 is communicated with a delivery pipe 6, one end of the delivery pipe 6 is fixedly connected and communicated with a grouting pipe 7, and a through hole corresponding to the grouting pipe 7 is provided at the bottom of the support trolley 1;

[0033] On one outer wall of the supporting trolley 1, a traction plate 8 is fixedly connected. A rotating rod 9 is rotatably inserted on the traction plate 8. One end of the rotating rod 9 is fixedly connected with a first bevel gear 10. A second bevel gear 11 is arranged below the first bevel gear 10. The bottom of the second bevel gear 11 is fixedly connected with a traction rod 12. The bottom end of the traction rod 12 is fixedly connected with a third bevel gear 13. A meshing fourth bevel gear 14 is arranged at the bottom of the third bevel gear 13. A connecting rod 15 is fixedly inserted on the fourth bevel gear 14. A driving wheel 16 is fixedly sleeved on the connecting rod 15. A driven wheel 17 is arranged on one side of the driving wheel 16. The driving wheel 16 and the driven wheel 17 are connected by a connecting belt 18. A shaft rod 19 is fixedly inserted on the driven wheel 17. The shaft rod 19 is rotatably connected with the inner wall of the supporting trolley 1. One end of the shaft rod 19 is fixedly connected with a spur gear 20. A toothed plate 21 is fixedly connected to the outer side wall of the grouting pipe 7. The spur gear 20 meshes with the toothed plate 21;

[0034] One end of the rotating rod 9 away from the first bevel gear 10 is fixedly connected with a handwheel 22. A stop rod 23 is slidably inserted on the handwheel 22. A plurality of stop grooves corresponding to the stop rod 23 are arranged on the traction plate 8. One end of the stop rod 23 is fixedly connected with a positioning block 24. The other end of the stop rod 23 is fixedly connected with a pull rod 25. A spring 26 is sleeved on the stop rod 23. The two ends of the spring 26 are respectively fixedly connected with the positioning block 24 and the handwheel 22.

[0035] A construction method of a post - grouting device for cast - in - place piles includes the following steps:

[0036] Step 1, the position is moved to above the cast - in - place pile through the moving mechanism 27 on the bottom of the supporting trolley 1;

[0037] Step 2, pull the pull rod 25 to drive the stop rod 23 to slide on the traction plate 8. The positioning block 24 installed on the stop rod 23 will compress the spring 26, release the fixation between the stop rod 23 and the traction plate 8, and unlock the rotating rod 9;

[0038] Step 3, rotate the rotating rod 9 to make the first bevel gear 10 mesh with the second bevel gear 11 to rotate. The traction rod 12 will make the third bevel gear 13 mesh with the fourth bevel gear 14 to rotate to realize the rotation of the connecting rod 15. The driving wheel 16 on the connecting rod 15 will make the driven wheel 17 rotate through the connecting belt 18 to realize the rotation of the shaft rod 19. The shaft rod 19 will make the spur gear 20 rotate and then mesh with the toothed plate 21 on the outer wall of the grouting pipe 7. The grouting pipe 7 moves downward in the through - hole on the supporting trolley 1 and drops to the bottom of the cast - in - place pile. Then release the stop rod 23 and insert it into the corresponding stop groove to realize the fixation of the linkage mechanism;

[0039] Step 4, inject the slurry into the slurry tank 2 through the feed hopper 3. Control the pumping pump 4 to pump out the slurry through the diversion pipe 5. The slurry is transported to the grouting pipe 7 through the conveying pipe 6 to realize grouting

[0040] In this embodiment, four moving mechanisms 27 are fixedly installed at the bottom of the supporting trolley 1. The four moving mechanisms 27 are all universal self-locking wheels and are respectively fixed at the four corners of the bottom of the supporting trolley 1, facilitating the movement of the position; T-shaped guide blocks 28 are fixedly connected to the outer walls on both sides of the grouting pipe 7, and guide grooves corresponding to the T-shaped guide blocks 28 are provided on the inner wall of the through-hole of the supporting trolley 1 to guide the grouting pipe 7; two symmetrically arranged holding handles 29 are fixedly connected to one side of the top of the traction plate 8 to facilitate pushing the supporting trolley 1 to move; a cross plate 30 is fixedly connected to the top of one end of the supporting trolley 1, a through-hole is provided on the cross plate 30, and a first bearing 31 is installed in the through-hole. The traction rod 12 is fixedly inserted into the first bearing 31 to rotatably support the traction rod 12; a bearing groove is provided on the traction plate 8, and a second bearing 32 is fixedly installed in the bearing groove. The rotating rod 9 is fixedly inserted into the second bearing 32 to rotatably support the rotating rod 9; both the driving wheel 16 and the driven wheel 17 are belt wheels, and the connecting belt 18 is a belt.

[0041] Working principle: First, the movement of the position is realized through the moving mechanism 27 on the bottom of the supporting trolley 1. When moving above the cast-in-place pile, by pulling the pull rod 25, the stop rod 23 slides on the traction plate 8, and the positioning block 24 installed on the stop rod 23 compresses the compression spring 26. Then, rotate the rotating rod 9 to make the first bevel gear 10 mesh with the second bevel gear 11 to rotate. At the same time, the traction rod 12 on the bottom will make the third bevel gear 13 mesh with the fourth bevel gear 14 to rotate to realize the rotation of the connecting rod 15. At this time, the driving wheel 16 installed on the connecting rod 15 will make the driven wheel 17 rotate through the connecting belt 18 to realize the rotation of the shaft rod 19. The shaft rod 19 will make the flat gear 20 rotate and then mesh with the toothed plate 21 on the outer wall of the grouting pipe 7. At this time, the grouting pipe 7 moves downward in the through-hole of the supporting trolley 1 and falls to the bottom of the cast-in-place pile. Then, release the stop rod 23 and insert it into the corresponding stop groove to fix the linkage mechanism. Finally, inject the slurry into the slurry tank 2 through the feed hopper 3, and control the pumping pump 4 to pump out the slurry through the diversion pipe 5. The slurry is transported to the grouting pipe 7 through the conveying pipe 6 to realize grouting.

[0042] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, in any aspect, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to embrace all changes within the meaning and scope of the equivalent elements of the claims in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

Claims

1. A post-grouting device and construction method for cast-in-place piles, comprising a support trolley (1), characterized in that: A slurry box (2) is fixedly installed in the support trolley (1), a feed hopper (3) is fixedly connected to the top of the slurry box (2), a pumping pump (4) is fixedly connected to the top side wall of the slurry box (2), a guide pipe (5) is fixedly connected between the pumping pump (4) and the bottom of the slurry box (2), the other end of the pumping pump (4) is connected to a delivery pipe (6), one end of the delivery pipe (6) is fixedly connected to a grouting pipe (7), and a through opening corresponding to the grouting pipe (7) is provided at the bottom of the support trolley (1); A traction plate (8) is fixedly connected to an outer wall of one side of the support trolley (1), a rotating rod (9) is rotatably inserted on the traction plate (8), one end of the rotating rod (9) is fixedly connected to a first bevel gear (10), a second bevel gear (11) is provided below the first bevel gear (10), a traction rod (12) is fixedly connected to the bottom of the second bevel gear (11), a third bevel gear (13) is fixedly connected to the bottom of the traction rod (12), a fourth bevel gear (14) meshing with the third bevel gear (13) is provided at the bottom of the third bevel gear (13), and a first bevel gear (14) is fixedly inserted on the fourth bevel gear (14). A connecting rod (15) is provided, a driving wheel (16) is fixedly sleeved on the connecting rod (15), a driven wheel (17) is provided on one side of the driving wheel (16), the driving wheel (16) and the driven wheel (17) are connected via a connecting belt (18), a shaft (19) is fixedly inserted on the driven wheel (17), the shaft (19) is rotatably connected to the inner wall of the supporting trolley (1), one end of the shaft (19) is fixedly connected to a spur gear (20), the outer wall of the grouting pipe (7) is fixedly connected to a toothed plate (21), and the spur gear (20) is meshed with the toothed plate (21); One end of the rotating rod (9) away from the first bevel gear (10) is fixedly connected to a hand wheel (22), a stop rod (23) is slidably inserted on the hand wheel (22), a plurality of stop grooves corresponding to the stop rod (23) are provided on the traction plate (8), one end of the stop rod (23) is fixedly connected to a positioning block (24), the other end of the stop rod (23) is fixedly connected to a pull rod (25), a spring (26) is sleeved on the stop rod (23), and the two ends of the spring (26) are respectively fixedly connected to the positioning block (24) and the hand wheel (22).

2. A post-grouting device for cast-in-place piles according to claim 1, characterized in that: Four moving mechanisms (27) are fixedly mounted on the bottom of the supporting trolley (1); the four moving mechanisms (27) are all universal self-locking wheels and are respectively fixed at the four corners of the bottom of the supporting trolley (1).

3. A post-grouting device for cast-in-place piles according to claim 1, characterized in that: T-shaped guide blocks (28) are fixedly connected to the outer walls on both sides of the grouting pipe (7), and guide grooves corresponding to the T-shaped guide blocks (28) are provided on the inner wall of the through opening of the support trolley (1).

4. A post-grouting device for cast-in-place piles according to claim 1, characterized in that: Two symmetrically arranged holding handles (29) are fixedly connected to one side of the top end of the traction plate (8).

5. The post-grouting device for cast-in-place piles according to claim 1, characterized in that: A cross plate (30) is fixedly connected to the top of one end of the support trolley (1), a through opening is provided on the cross plate (30), a first bearing (31) is installed in the through opening, and the traction rod (12) is fixedly inserted in the first bearing (31).

6. A post-grouting device for cast-in-place piles according to claim 1, characterized in that: The traction plate (8) is provided with a bearing groove, a second bearing (32) is fixedly installed in the bearing groove, and the rotating rod (9) is fixedly inserted in the second bearing (32).

7. The post-grouting device for cast-in-place piles according to claim 1, characterized in that: The driving wheel (16) and the driven wheel (17) are both pulleys, and the connecting belt (18) is a belt.

8. A construction method for a post-grouting device for a cast-in-place pile, comprising the following steps: Step 1: Move the position to above the cast-in-place pile by using the moving mechanism (27) on the bottom of the supporting trolley (1); Step 2: Pull the pull rod (25) to drive the stop rod (23) to slide on the traction plate (8), and the positioning block (24) installed on the stop rod (23) will compress the spring (26), release the fixation between the stop rod (23) and the traction plate (8), and unlock the rotating rod (9); Step 3: rotating the rotating rod (9) to cause the first bevel gear (10) to mesh with the second bevel gear (11) to rotate, the traction rod (12) will cause the third bevel gear (13) to mesh with the fourth bevel gear (14) to rotate to realize the rotation of the connecting rod (15), the driving wheel (16) on the connecting rod (15) will cause the driven wheel (17) to rotate through the connecting belt (18) to realize the rotation of the shaft rod (19), the shaft rod (19) will cause the flat gear (20) to rotate and then mesh with the toothed plate (21) on the outer wall of the grouting pipe (7), the grouting pipe (7) moves downward in the through opening on the supporting trolley (1) and falls to the bottom of the cast-in-place pile, and then the stop rod (23) is loosened and inserted into the corresponding stop groove to realize the fixation of the linkage mechanism; Step 4: inject slurry into the slurry box (2) through the feed hopper (3), control the extraction pump (4) to extract the slurry through the guide pipe (5), and use the delivery pipe (6) to transport the slurry to the grouting pipe (7) to achieve grouting.

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