A post-grouting device for cast-in-place piles and a method of using the same

Abstract

The application discloses a bored pile post-grouting device and a use method thereof, and relates to the technical field of grouting devices. In order to ensure the stability during grouting, the device comprises a base and a supporting part. The supporting part comprises a supporting seat, a vertical rod fixed to the outer wall of the bottom of the supporting seat through a pin, an installation ring fixed to the outer wall of the bottom of the vertical rod through a pin, a T-shaped rod fixed to the inner wall of the circumference of the installation ring through a pin, a guide frame movably connected to the outer wall of the circumference of the T-shaped rod, a hydraulic cylinder two fixed to the outer wall of the top of the supporting seat, and a moving disc fixed to the output end of the hydraulic cylinder two through a pin. The use method of the grouting device comprises the following steps: moving the whole grouting device to a grouting site by using universal wheels. The driving motor can drive the stirring blade and the stirring column to rotate by the transmission effect of the belt one, so that the grouting process can be carried out on the slurry in the bored pile, and the uniformity of the slurry is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of grouting devices, in particular to a post-grouting device for bored piles and a use method thereof. BACKGROUND

[0002] In the prior art, pile foundation bearing capacity is very important when building buildings, especially high-rise buildings. With the large-scale development of high-rise buildings in China, the use of bored piles as engineering piles in construction projects is increasing. At present, post-grouting technology for bored piles has been gradually applied and promoted. Grouting requires the use of grouting pipes to inject grout into bored piles.

[0003] After searching, a post-grouting device for bored piles is disclosed in Chinese patent application No. 202022496656.0, which comprises a grout storage barrel, a detachable filter box structure, a stirring motor, a stirring rod, stirring vanes, a coupling, a cleaning pipe structure, a grout suction pipe, a sewage pipe, a grouting pump, a delivery pipe, a pressure filling valve, a grout pressing pipe, and a manual-free electric grouting lifting nozzle structure. The detachable filter box structure is connected to the grout storage barrel. The stirring motor is bolted to the upper middle part of the grout storage barrel. The upper end of the stirring rod is connected to the lower end of the output shaft of the stirring motor through the coupling. The stirring vanes are bolted to the left and right sides of the stirring rod from top to bottom.

[0004] The post-grouting device for bored piles in the above-mentioned patent has the following disadvantages: when grouting, the contact between the pull rope and the pile wall will cause wear and tear on the pull rope due to friction, which will affect the service life of the pull rope and the safety of grouting. SUMMARY

[0005] The purpose of the present application is to solve the problems existing in the prior art and to provide a post-grouting device for bored piles and a use method thereof.

[0006] To achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0007] A post-grouting device for bored piles, comprising a base and a support part, the support part comprising:

[0008] A support seat, the bottom outer wall of which is fixed with a vertical rod through a pin, and the bottom outer wall of the vertical rod is fixed with a mounting ring through a pin;

[0009] A T-shaped rod fixed to the circumferential inner wall of the mounting ring through a pin;

[0010] A guide frame movably connected to the circumferential outer wall of the T-shaped rod;

[0011] A hydraulic cylinder II fixed to the top outer wall of the support seat;

[0012] Moving disc: it is fixed to the output end of the hydraulic cylinder through a pin;

[0013] Swing arm: its two ends are movably connected to the inner wall of the moving disc and the inner wall of the guide frame respectively;

[0014] Bent rod: it is fixed to one side of the outer wall of the guide frame through a pin, and one end of the bent rod is fixed with a U-shaped frame through a pin;

[0015] Roller: it is movably connected to the inner wall of the U-shaped frame;

[0016] The outer wall of the top of the support seat is provided with a grouting assembly.

[0017] Preferably, the grouting assembly comprises a sliding rod and a rectangular plate, the rectangular plate is fixed to the outer wall of the top of the support seat, the sliding rod is movably connected to the inner wall of the through hole on the surface of the rectangular plate, one end of the sliding rod is fixed with a moving frame through a pin, and a roller is movably connected to the inner wall of the moving frame.

[0018] Preferably, the outer circumferential wall of the sliding rod is sleeved with a spring, and the two ends of the spring are fixed to one side of the outer wall of the moving frame and one side of the inner wall of the rectangular plate through pins.

[0019] Preferably, the grouting assembly further comprises a clamping plate and a grouting pipe, the clamping plate is fixed to one end of the sliding rod through a pin, and the grouting pipe is embedded in the through hole on the surface of the clamping plate.

[0020] Preferably, the top of the base is fixed with a support, the top of the support is fixed with a hydraulic cylinder one, and the support seat is fixed to the output end of the hydraulic cylinder one through a pin.

[0021] Preferably, the through hole in the top of the support seat is movably connected with a stirring column, and the outer circumferential wall of the stirring column is welded with stirring blades.

[0022] Preferably, the top of the support seat is fixed with a mounting frame, the top of the mounting frame is fixed with a driving motor, and the output end of the driving motor and the outer circumferential wall of the stirring column are both fixed with a pulley two through a pin, and the same belt one is transmission connected between the two pulleys two.

[0023] On the basis of the foregoing scheme: the top of the support seat is movably connected with a rotating column, the outer circumferential wall of the rotating column and the outer circumferential wall of the stirring column are both fixed with a pulley one through a pin, and the two pulleys one are transmission by a belt two, and the top of the rotating column is fixed with a cam through a pin.

[0024] On the basis of the foregoing scheme, preferably, the bottom of the base is movably connected with a universal wheel.

[0025] A method for using a post-grouting device for cast-in-place piles, comprising the following steps:

[0026] S1: the universal wheel is used for moving the whole grouting device to a grouting position;

[0027] S2: the position of the roller in the transverse direction is adjusted according to the inner diameter of the cast-in-place pile, so that the roller and the inner surface of the cast-in-place pile are attached;

[0028] S3: one end of the grouting pipe is connected with the delivery pump;

[0029] S4: the hydraulic cylinder is used for driving the grouting pipe to move to the bottom of the cast-in-place pile and then grouting;

[0030] S5: the driving motor is used for driving the stirring blade and the stirring column to stir and mix the slurry in the rotating process;

[0031] S6: the cam is used for intermittently driving the roller surface, and the grouting pipe is vibrated, so that the slurry is quickly guided out from the bottom of the grouting pipe.

[0032] The beneficial effects of the present application are:

[0033] 1. The driving motor can drive the stirring blade and the stirring column to rotate through the transmission of the belt, so that the slurry in the cast-in-place pile can be stirred and mixed during the grouting process, and the uniformity of the slurry is ensured.

[0034] 2. The height of the stirring blade in the vertical direction can be adjusted through the hydraulic cylinder, so that the stirring blade can always stir the upper layer of the slurry, thereby avoiding the empty load of the stirring blade.

[0035] 3. The vertical movement of the moving disc can be converted into the transverse movement of the roller through the swing arm, so that the roller can roll along the inner wall of the cast-in-place pile after being attached to the inner surface of the cast-in-place pile, thereby ensuring the stability during the grouting process.

[0036] 4. The cam can intermittently drive the roller, so that the clamping plate drives the grouting pipe to swing left and right in the transverse direction, thereby avoiding the blockage of the slurry in the grouting pipe.

[0037] 5. The universal wheel is provided, so that the whole grouting device can be moved to the grouting position for grouting. BRIEF DESCRIPTION OF DRAWINGS

[0038] Figure 1 It is a whole structure schematic view of a cast-in-place pile post-grouting device proposed in the present application;

[0039] Figure 2 It is a main body structure schematic view of a cast-in-place pile post-grouting device proposed in the present application;

[0040] Figure 3A support part overall structure schematic view of a bored pile post-grouting device is provided in the present application;

[0041] Figure 4 A support part bottom structure schematic view of a bored pile post-grouting device is provided in the present application;

[0042] Figure 5 A rolling part structure schematic view of a bored pile post-grouting device is provided in the present application;

[0043] Figure 6 A grouting pipe structure schematic view of a bored pile post-grouting device is provided in the present application.

[0044] In the figure: 1 - base, 2 - support, 3 - hydraulic cylinder one, 4 - support seat, 5 - universal wheel, 6 - sliding rod, 7 - hydraulic cylinder two, 8 - drive motor, 9 - mounting frame, 10 - mounting ring, 11 - cam, 12 - pulley one, 13 - rotating column, 14 - belt one, 15 - stirring blade, 16 - vertical rod, 17 - pulley two, 18 - stirring column, 19 - moving disc, 20 - T-shaped rod, 21 - U-shaped frame, 22 - roller, 23 - bent rod, 24 - guide frame, 25 - swing arm, 26 - clamping plate, 27 - spring, 28 - rectangular plate, 29 - roller, 30 - moving frame, 31 - grouting pipe, 32 - belt two. DETAILED DESCRIPTION

[0045] The technical solutions of the patent will be further described in detail below in combination with specific embodiments.

[0046] The embodiments of the patent will be described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the patent, and cannot be understood as a limitation on the patent.

[0047] In the description of the patent, it should be understood that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the patent and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the patent.

[0048] In the description of the present patent, it is necessary to point out that, unless otherwise explicitly specified and limited, the terms "mount", "connect", "connect", "set" should be understood broadly, for example, it can be fixedly connected, set, or it can be detachably connected, set, or integrally connected, set. For those skilled in the art, the specific meaning of the above terms in the present patent can be understood according to the specific circumstances.

[0049] Embodiment 1

[0050] A bored pile post-grouting device, as shown in Figures 1-6 The support part comprises:

[0051] The support seat 4: the bottom outer wall is fixed with a vertical rod 16 through a pin, and the bottom outer wall of the vertical rod 16 is fixed with a mounting ring 10 through a pin;

[0052] The T-shaped rod 20 is fixed in the circumferential inner wall of the mounting ring 10 through a pin;

[0053] The guide frame 24 is slidingly connected to the circumferential outer wall of the T-shaped rod 20;

[0054] The hydraulic cylinder two 7 is fixed to the top outer wall of the support seat 4 through a bolt;

[0055] The moving disc 19 is fixed to the output end of the hydraulic cylinder two 7 through a pin;

[0056] The swing arm 25 is rotatably connected to the inner wall of the moving disc 19 and the inner wall of the guide frame 24 at both ends, respectively;

[0057] The bent rod 23 is fixed to one side of the outer wall of the guide frame 24 through a pin, and one end of the bent rod 23 is fixed with a U-shaped frame 21 through a pin;

[0058] The roller 22 is rotatably connected to the inner wall of the U-shaped frame 21;

[0059] The top outer wall of the support seat 4 is provided with a grouting assembly;

[0060] By providing the hydraulic cylinder two 7, the moving disc 19 can be driven to move in the vertical direction, and by using the swing arm 25, the vertical movement of the moving disc 19 can be converted into the lateral movement of the guide frame 24, so that the roller 22 can move laterally synchronously under the guidance of the T-shaped rod 20, and the diameter of the circle between the multiple rollers 22 can be adjusted within a certain range, so that when different inner diameters of the bored pile are needed to be grouted, the position of the roller 22 in the lateral direction can be adjusted, so that the roller 22 can tightly adhere to the inner wall of the bored pile, thereby ensuring the stability of the grouting assembly during grouting.

[0061] Further, the grouting assembly comprises a slide rod 6 and a rectangular plate 28 fixed on the outer wall of the top of the support base 4 by bolts, and the slide rod 6 is slidably connected to the inner wall of the through hole on the surface of the rectangular plate 28, one end of the slide rod 6 is fixed with a moving frame 30 through a pin, and the inner wall of the moving frame 30 is rotatably connected with a roller 29, the circumferential outer wall of the slide rod 6 is sleeved with a spring 27, and the two ends of the spring 27 are fixed on the outer wall of one side of the moving frame 30 and the inner wall of one side of the rectangular plate 28 through pins respectively, and the grouting assembly further comprises a clamping plate 26 and a grouting pipe 31, the clamping plate 26 is fixed on one end of the slide rod 6 through a pin, and the grouting pipe 31 is embedded in the through hole on the surface of the clamping plate 26.

[0062] By connecting the grouting pipe 31 and the corresponding conveying pump support, the conveying pump can deliver the slurry into the bored pile.

[0063] Further, the outer wall of the top of the base 1 is fixed with a support 2 by bolts, the outer wall of the top of the support 2 is fixed with a hydraulic cylinder one 3 by bolts, and the support base 4 is fixed on the output end of the hydraulic cylinder one 3 through a pin.

[0064] By arranging the hydraulic cylinder one 3, the height of the support part in the vertical direction can be adjusted, so that the grouting pipe 31 can be inserted into the bored pile for grouting.

[0065] Further, the through hole in the top of the support base 4 is rotatably connected with a stirring column 18, and the circumferential outer wall of the stirring column 18 is welded with stirring blades 15, the outer wall of the top of the support base 4 is fixed with a mounting frame 9 by bolts, the outer wall of the top of the mounting frame 9 is fixed with a driving motor 8 by bolts, and the output end of the driving motor 8 and the circumferential outer wall of the stirring column 18 are fixed with a belt wheel two 17 through a pin respectively, and the same belt one 14 is drivingly connected between the two belt wheels two 17.

[0066] The driving motor 8 can drive the stirring column 18 and the stirring blades 15 to rotate by the transmission of the belt one 14, so that the stirring blades 15 can fully mix and stir the slurry in the bored pile during rotation, and the hydraulic cylinder one 3 can ensure that the stirring blades 15 adaptively stir according to the height of the slurry in the bored pile, so as to fully ensure the stirring effect.

[0067] Further, the outer wall of the bottom of the base 1 is rotatably connected with a universal wheel 5.

[0068] By arranging the universal wheel 5, the whole grouting device can be moved to the grouting site.

[0069] In this embodiment, the entire grouting device is first moved to the grouting location using the caster wheel 5. Then, the position of the roller 22 in the lateral direction is adjusted according to the inner diameter of the bored pile so that the outer circumference of the roller 22 can fit against the inner surface of the bored pile. Next, one end of the grouting pipe 31 is connected to the grouting pump. Then, the hydraulic cylinder 3 drives the roller 22 to roll along the inner surface of the bored pile, so that the bottom of the grouting pipe 31 gradually moves to the bottom of the bored pile. The grout is then output from the grouting pipe 31 using the delivery pump. During this process, the drive motor 8 drives the stirring blade 15 and the stirring column 18 to rotate, thereby stirring the grout. As the grout level rises, the hydraulic cylinder 3 synchronously drives the roller 22 to roll along the inner surface of the bored pile, so that the grouting pipe 31 moves upward continuously. At the same time, the stirring blade 15 can always stir the uppermost layer of grout, thereby ensuring the stirring effect.

[0070] Example 2

[0071] A post-grouting device for bored piles, such as Figure 3 As shown, in order to avoid the grout clogging the bored pile, this embodiment makes the following additions based on embodiment 1: the top outer wall of the support base 4 is rotatably connected to a rotating column 13, the outer circumference of the rotating column 13 and the outer circumference of the mixing column 18 are both fixed with pulleys 12 by pins, and the two pulleys 12 are driven by belt 32. The top of the rotating column 13 is fixed with a cam 11 by pins.

[0072] The transmission action of belt 232 allows cam 11 to intermittently move the surface of roller 29 during rotation, allowing grouting pipe 31 to swing left and right along the lateral direction. This prevents grout from clogging in grouting pipe 31 and ensures smooth grout discharge. The elastic force of spring 27 ensures that roller 29 can always be in contact with cam 11.

[0073] Example 3

[0074] A method for using a post-grouting device for bored piles includes the following steps:

[0075] S1: Use the casters 5 to move the entire grouting device to the grouting location;

[0076] S2: Adjust the position of roller 22 in the lateral direction according to the inner diameter of the bored pile so that roller 22 fits against the inner surface of the bored pile.

[0077] S3: Connect one end of the grouting pipe 31 to the delivery pump;

[0078] S4: Use hydraulic cylinder 3 to drive grouting pipe 31 to move to the bottom of the bored pile and then perform grouting;

[0079] S5: driving the stirring blade 15 and the stirring column 18 by the driving motor 8 to stir and mix the slurry in the process of rotation;

[0080] S6: intermittently moving the surface of the roller 29 by the cam 11 to vibrate the grouting pipe 31, so that the slurry is quickly guided out from the bottom of the grouting pipe 31.

[0081] The above merely describes the preferred embodiments of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can make equivalent replacements or changes according to the technical solution and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A post-grouting device for a cast-in-place pile, comprising a base (1) and a support part, characterized in that, The support part comprises: The bottom outer wall of the support base (4) is fixed with a vertical rod (16) through a pin, and the bottom outer wall of the vertical rod (16) is fixed with a mounting ring (10) through a pin; The T-shaped rod (20) is fixed on the circumferential inner wall of the mounting ring (10) through a pin; The guide frame (24) is movably connected to the circumferential outer wall of the T-shaped rod (20); The hydraulic cylinder two (7) is fixed to the top outer wall of the support base (4); The moving disc (19) is fixed to the output end of the hydraulic cylinder two (7) through a pin; The swing arm (25) is movably connected to the inner wall of the moving disc (19) and the inner wall of the guide frame (24) respectively; The bent rod (23) is fixed to one side of the outer wall of the guide frame (24) through a pin, and one end of the bent rod (23) is fixed with a U-shaped frame (21) through a pin; The roller (22) is movably connected to the inner wall of the U-shaped frame (21); The top outer wall of the support base (4) is provided with a grouting assembly.

2. A post-grouting device for a cast-in-place pile according to claim 1, characterized in that, The grouting assembly comprises a slide rod (6) and a rectangular plate (28), the rectangular plate (28) is fixed to the top outer wall of the support base (4), and the slide rod (6) is movably connected to the inner wall of the through hole formed on the surface of the rectangular plate (28), one end of the slide rod (6) is fixed with a moving frame (30) through a pin, and the inner wall of the moving frame (30) is movably connected with a roller (29).

3. A post-grouting device for a cast-in-place pile according to claim 2, characterized in that, The circumferential outer wall of the slide rod (6) is sleeved with a spring (27), and the two ends of the spring (27) are fixed to one side of the outer wall of the moving frame (30) and one side of the inner wall of the rectangular plate (28) respectively through pins.

4. A post-grouting device for a cast-in-place pile according to claim 3, characterized in that, The grouting assembly further comprises a clamping plate (26) and a grouting pipe (31), the clamping plate (26) is fixed to one end of the slide rod (6) through a pin, and the grouting pipe (31) is embedded in the through hole formed on the surface of the clamping plate (26).

5. A post-grouting device for a cast-in-place pile according to claim 4, characterized in that, The top outer wall of the base (1) is fixed with a support (2), the top outer wall of the support (2) is fixed with a hydraulic cylinder one (3), and the support base (4) is fixed to the output end of the hydraulic cylinder one (3) through a pin.

6. A post-grouting device for a cast-in-place pile according to claim 5, characterized in that, The through hole formed on the top inner wall of the support base (4) is movably connected with a stirring column (18), and the circumferential outer wall of the stirring column (18) is welded with stirring blades (15).

7. A post-grouting device for a cast-in-place pile according to claim 6, characterized in that The top outer wall of the support base (4) is fixed with a mounting frame (9), the top outer wall of the mounting frame (9) is fixed with a driving motor (8), and the output end of the driving motor (8) and the circumferential outer wall of the stirring column (18) are both fixed with a belt wheel two (17) through a pin, and the same belt one (14) is drivingly connected between the two belt wheel two (17).

8. A post-grouting device for a cast-in-place pile according to claim 7, characterized in that, The top outer wall of the support base (4) is movably connected with a rotating column (13), the circumferential outer wall of the rotating column (13) and the circumferential outer wall of the stirring column (18) are both fixed with a belt wheel one (12) through a pin, and the two belt wheel one (12) are drivingly connected by a belt two (32), and the top of the rotating column (13) is fixed with a cam (11) through a pin.

9. A post-grouting device for a cast-in-place pile according to claim 8, characterized in that, The bottom outer wall of the base (1) is movably connected with a universal wheel (5).

10. A method of using the post-grouting device for cast-in-place piles according to claim 9, characterized in that, The steps comprise: S1: move the whole grouting device to the grouting site by using the universal wheel (5); S2: Adjust the position of the roller (22) in the transverse direction according to the inner diameter of the cast-in-place pile, so that the roller (22) and the inner surface of the cast-in-place pile fit together; S3: Connect one end of the grouting pipe (31) to the delivery pump; S4: Use the hydraulic cylinder (3) to drive the grouting pipe (31) to move to the bottom of the cast-in-place pile and then grout; S5: Use the driving motor (8) to drive the stirring blade (15) and the stirring column (18) to stir and mix the slurry during rotation; S6: Use the cam (11) to intermittently push the surface of the roller (29) to vibrate the grouting pipe (31), so that the slurry is quickly guided out from the bottom of the grouting pipe (31).

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