Post-grouting device for slurry retaining wall pore-forming cast-in-place pile

Abstract

The utility model belongs to the field of grouting devices, and particularly relates to a slurry retaining wall pore-forming cast-in-place pile post-grouting device which comprises a base, a stirring and mixing device and a grouting assembly. A servo motor is mounted on the stirring and mixing device, a transmission shaft is fixedly mounted at the output end of the servo motor, stirring blades are fixedly mounted on the periphery of the transmission shaft, a fixing seat is fixedly mounted at the bottom of the servo motor, and a fixing frame is fixedly mounted on one side of the fixing seat; a servo motor is driven to enable a transmission shaft at the output end to rotate, the transmission shaft drives stirring blades to stir slurry in a stirring box so that the slurry can be fully mixed, a hydraulic cylinder is driven to enable one end of a plunger to be linked with a cover body during stirring, and the cover body is made to move circumferentially with the hinged position of the stirring box as the axis. The whole stirring box is closed, slurry is prevented from spilling and leaking, the slurry stirring function is achieved, the problem that other equipment is needed for stirring and mixing during grouting is solved, and the adaptability in use is improved.

Description

Technical Field

[0001] The utility model relates to the field of grouting devices, in particular to a post-grouting device for mud wall-protecting hole-forming cast-in-place piles. Background Art

[0002] The main properties of drilling mud include mud density, viscosity, static shear force, sand content, colloid rate, water loss rate, pH value and plasticity index. The performance index of mud is an important process index for bored pile construction. The change of each performance index directly affects a series of drilling process problems such as mechanical drilling speed, hole wall stability, hole purification, drill bit life and prevention of hole accidents, and directly affects the hole depth, hole diameter, verticality, mud skin thickness and bottom sediment thickness, especially for ultra-long diameter drills. In order to give full play to the role of mud, the selection of its performance index is very important.

[0003] Chinese patent number CN202221390434.3 discloses a post-grouting device for a mud-walled bored pile, comprising a steel wire rope, a vibrator, a support plate, a connecting rod, a slide, a delivery rod, a fixing frame, a fork-shaped delivery head, a grouting pipe plugging, a pile end grouting pipe, an end grouting hole, an annular grouting hole, a pile side grouting pipe, and a delivery hook. A vibrator is provided at the bottom of the steel wire rope, a support plate is provided at the bottom of the vibrator, a connecting rod is provided on one side of the support plate, a slide is provided on one side of the connecting rod, a fixing frame is provided at the bottom of the slide, a delivery rod is provided at the bottom of the support plate, a fork-shaped delivery head is provided at the bottom of the delivery rod, and a pile side grouting pipe and a pile end grouting pipe are provided at the bottom of the grouting pipe plugging.

[0004] From the above, it can be seen that in the bored pile hole, a steel cage or a mud wall bored pile post-grouting device is used to place grouting pipes at the pile end and pile side. The use of a drilling mud wall bored pile post-grouting device to place grouting pipes is fast, reliable, easy to operate, and manual, auxiliary hydraulic machinery, and gravity placement of grouting pipes reduces costs and saves resources. However, this case also has the following shortcomings: drilling mud is a mixed slurry composed of water, bentonite (or clay) and additives, which needs to be fully mixed during grouting. The existing technology requires other equipment to stir and mix the mud before it can be used during grouting, which has certain limitations in use.

[0005] Therefore, in view of the above problems, a post-grouting device for mud wall bored piles is proposed. Utility Model Content

[0006] In order to make up for the deficiency of the prior art, that is, the problem that other equipment is needed for stirring and mixing during grouting, the utility model proposes a post-grouting device for mud wall-protecting hole-forming cast-in-place piles.

[0007] The technical solution adopted by the utility model to solve its technical problem is: the mud wall protection hole cast-in-place pile post-grouting device described in the utility model comprises a base, a stirring and mixing device, and a grouting component; the stirring and mixing device is equipped with a servo motor, a transmission shaft is fixedly installed at the output end of the servo motor, stirring blades are fixedly installed around the transmission shaft, a fixing seat is fixedly installed at the bottom of the servo motor, and a fixing frame is fixedly installed on one side of the fixing seat.

[0008] Preferably, the grouting assembly is equipped with a connecting bin, a torque motor is fixedly installed on one side of the connecting bin, an auger is fixedly installed on the output end of the torque motor, the auger is clearance-fitted with the inner wall of the connecting bin on all sides, and a mixing box is fixedly installed on the top of the connecting bin.

[0009] Preferably, the base is installed with a fixing frame, a push handle is fixedly installed on one side of the fixing frame, and four moving wheels are movably installed on the bottom of the fixing frame.

[0010] Preferably, fixed bearings are fixedly installed on both sides of the mixing box, and transmission shafts are movably installed on the inner walls of the two fixed bearings. Hydraulic cylinders are hinged on both sides of the mixing box, and plungers are movably installed on the output ends of the two hydraulic cylinders. The other ends of the two plungers are hinged to a cover body, and one side of the cover body is hinged to the mixing box.

[0011] Preferably, an outflow pipe is fixedly installed on one side of the connecting chamber, a connecting pipe is fixedly installed on one side of the connecting chamber, and a one-way valve is fixedly installed on the other end of the connecting pipe.

[0012] Preferably, an output pipe is fixedly mounted on one side of the one-way valve, an air pump is fixedly mounted on the other end of the output pipe, and a fixing frame is fixedly mounted on the bottom of the air pump.

[0013] The utility model is beneficial in that:

[0014] 1. The utility model adopts the structural design of the stirring and mixing device, drives the servo motor to make the transmission shaft at the output end rotate, and drives the stirring blades to stir the mud inside the stirring box to make it fully mixed. During stirring, the hydraulic cylinder is driven to make one end of the plunger produce linkage with the cover body, so that the cover body moves in a circle with the hinge of the stirring box as the axis, and the stirring box is closed as a whole to prevent the mud from spilling, thereby realizing the function of mud stirring, solving the problem that other equipment is needed for stirring and mixing during grouting, and improving the adaptability in use;

[0015] 2. The utility model adopts the structural design of the grouting component. When the auger rotates, the auger cooperates with the inner wall of the connecting bin to transport the mud to the bottom of the connecting bin. At this time, the air pump is driven to generate air pressure in the inner cavity of the connecting bin, so as to guide the mud inside the connecting bin in a pressure-generated manner, so that the mud flows out through the outlet pipe, thereby realizing the grouting function. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is an exploded schematic diagram of the overall structure of the utility model;

[0019] Figure 3 This is an exploded schematic diagram of the stirring and mixing device structure of the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the grouting assembly of the utility model;

[0021] Figure 5 It is a schematic diagram of the base structure of the utility model.

[0022] In the figure: 1. base; 2. stirring and mixing device; 3. grouting assembly; 11. fixed frame; 12. pusher; 13. moving wheel; 21. servo motor; 22. fixed seat; 23. transmission shaft; 24. stirring blade; 25. fixed bearing; 26. stirring box; 27. hydraulic cylinder; 28. plunger; 29. ​​cover; 31. connecting chamber; 32. torque motor; 33. auger; 34. connecting pipe; 35. one-way valve; 36. output pipe; 37. air pump; 38. outflow pipe. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-Figure 5As shown, the post-grouting device for mud wall hole-forming cast-in-place piles comprises a base 1, a stirring and mixing device 2, and a grouting assembly 3; the stirring and mixing device 2 is equipped with a servo motor 21, a transmission shaft 23 is fixedly installed at the output end of the servo motor 21, stirring blades 24 are fixedly installed around the transmission shaft 23, a fixing seat 22 is fixedly installed at the bottom of the servo motor 21, and a fixing frame 11 is fixedly installed on one side of the fixing seat 22;

[0025] During operation, the servo motor 21 provides power, and when driven, the transmission shaft 23 is rotated, and the transmission shaft 23 drives the stirring blade 24 to perform stirring.

[0026] Further, the grouting assembly 3 is equipped with a connecting chamber 31, a torque motor 32 is fixedly installed on one side of the connecting chamber 31, an auger 33 is fixedly installed on the output end of the torque motor 32, the auger 33 is clearance-matched with the inner wall of the connecting chamber 31 around the auger 33, and a mixing box 26 is fixedly installed on the top of the connecting chamber 31;

[0027] During operation, the mud stirred inside the mixing box 26 can enter the interior of the connecting bin 31 through the connection between the mixing box 26 and the connecting bin 31. When the torque motor 32 is driven, the auger 33 rotates on the inner wall of the connecting bin 31, and the mud is transported by the blades of the auger 33 so that the mud reaches the bottom end of the connecting bin 31.

[0028] Furthermore, the base 1 is provided with a fixing frame 11, a push handle 12 is fixedly provided on one side of the fixing frame 11, and four moving wheels 13 are movably provided on the bottom of the fixing frame 11;

[0029] During operation, the installation of the moving wheels 13 by the fixing frame 11 is beneficial for supporting the whole, and the push handle 12 is also helpful for moving the whole.

[0030] Furthermore, fixed bearings 25 are fixedly installed on both sides of the mixing box 26, and the inner walls of the two fixed bearings 25 are movably installed with transmission shafts 23. Hydraulic cylinders 27 are hinged on both sides of the mixing box 26, and plungers 28 are movably installed on the output ends of the two hydraulic cylinders 27. The other ends of the two plungers 28 are hinged with a cover body 29, and one side of the cover body 29 is hinged to the mixing box 26.

[0031] During operation, the installation of the fixed bearing 25 through the mixing box 26 is conducive to limiting the transmission shaft 23 to ensure that the transmission shaft 23 drives the mixing blades 24 to work stably. When the hydraulic cylinder 27 is driven, one end of the plunger 28 drives the cover body 29 to move relatively, so that the cover body 29 moves in a circle with the hinge of the mixing box 26 as the axis, and the mixing box 26 is closed as a whole to prevent mud from leaking.

[0032] Furthermore, an outflow pipe 38 is fixedly installed on one side of the connecting chamber 31, a connecting pipe 34 is fixedly installed on one side of the connecting chamber 31, and a one-way valve 35 is fixedly installed on the other end of the connecting pipe 34;

[0033] When working, the one-way valve 35 is a directional control valve that allows the airflow to flow in only one direction but not in the opposite direction. Compressed air enters from the output pipe 36, overcoming the spring force and friction force to open the valve port of the one-way valve 35, and the compressed air flows from the output pipe 36 to the connecting pipe 34. When there is no compressed air in the output pipe 36, the valve port is in a closed state under the action of the spring force and the residual air force of the connecting pipe 34, thereby preventing the mud inside the connecting chamber 31 from flowing back.

[0034] Furthermore, an output pipe 36 is fixedly installed on one side of the one-way valve 35, an air pump 37 is fixedly installed on the other end of the output pipe 36, and a fixing frame 11 is fixedly installed on the bottom of the air pump 37;

[0035] During operation, when the air pump 37 is driven, air pressure is generated so that the air enters the inner cavity of the connecting chamber 31 through the output pipe 36 and the connecting pipe 34, and the mud inside the connecting chamber 31 is guided and transported by the pressure.

[0036] Working principle: In embodiment 1, the mud and the mixture are placed inside the mixing box 26. At this time, the servo motor 21 is driven to rotate the transmission shaft 23 at the output end, and the transmission shaft 23 drives the stirring blade 24 to stir the mud inside the mixing box 26 to make it fully mixed. At the same time, the hydraulic cylinder 27 can be driven to extend and retract the plunger 28, and one end of the plunger 28 is used to link the cover body 29, so that the cover body 29 moves in a circle with the hinge of the mixing box 26 as the axis, so that the cover body 29 is tightly fitted to the top of the mixing box 26 to prevent the stirring blade 24 from splashing the mud during work. After stirring, the mud enters the interior of the connecting chamber 31 through the bottom of the mixing box 26.

[0037] In the second embodiment, when the mud enters the interior of the connecting bin 31, the driving torque motor 32 causes the auger 33 to rotate, so that the auger 33 cooperates with the inner wall of the connecting bin 31 to transport the mud to the bottom of the connecting bin 31. At this time, during grouting, the driving air pump 37 transmits air pressure to the bottom of the connecting bin 31 through the connecting pipe 34, so as to generate pressure to make the mud flow out through the outflow pipe 38.

[0038] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A post-grouting device for a grouting pile with a slurry wall, characterized in that: The invention comprises a base (1), a stirring and mixing device (2), and a grouting assembly (3); the stirring and mixing device (2) is provided with a servo motor (21); a transmission shaft (23) is fixedly installed at the output end of the servo motor (21); stirring blades (24) are fixedly installed around the transmission shaft (23); a fixing seat (22) is fixedly installed at the bottom of the servo motor (21); and a fixing frame (11) is fixedly installed on one side of the fixing seat (22).

2. The post-grouting device for mud wall-protected bored piles according to claim 1 is characterized in that: The grouting assembly (3) is provided with a connecting bin (31), a torque motor (32) is fixedly installed on one side of the connecting bin (31), an auger (33) is fixedly installed on the output end of the torque motor (32), the auger (33) is clearance-matched around the inner wall of the connecting bin (31), and a stirring box (26) is fixedly installed on the top of the connecting bin (31).

3. The post-grouting device for mud wall-protected bored piles according to claim 1 is characterized in that: The base (1) is installed with a fixing frame (11), a push handle (12) is fixedly installed on one side of the fixing frame (11), and four moving wheels (13) are movably installed at the bottom of the fixing frame (11).

4. The post-grouting device for mud wall-protected bored piles according to claim 2 is characterized in that: Fixed bearings (25) are fixedly installed on both sides of the mixing box (26), and transmission shafts (23) are movably installed on the inner walls of the two fixed bearings (25). Hydraulic cylinders (27) are hinged on both sides of the mixing box (26), and plungers (28) are movably installed on the output ends of the two hydraulic cylinders (27). The other ends of the two plungers (28) are hinged to a cover body (29), and one side of the cover body (29) is hinged to the mixing box (26).

5. The post-grouting device for mud wall-protected bored piles according to claim 2 is characterized in that: An outflow pipe (38) is fixedly mounted on one side of the connection chamber (31), a connection pipe (34) is fixedly mounted on one side of the connection chamber (31), and a one-way valve (35) is fixedly mounted on the other end of the connection pipe (34).

6. The post-grouting device for mud wall-protected bored piles according to claim 5 is characterized in that: An output pipe (36) is fixedly mounted on one side of the one-way valve (35), an air pump (37) is fixedly mounted on the other end of the output pipe (36), and a fixing frame (11) is fixedly mounted on the bottom of the air pump (37).

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