Post-grouting equipment for precast pile

Abstract

The invention discloses a precast pile post-grouting device which comprises a precast pile body, a moving box and a mixing and stirring assembly, the moving box is arranged on one side of the precast pile body, the mixing and stirring assembly is rotatably installed in the moving box, and slurry is poured for filling through the arrangement of the precast pile body. The device comprises a movable box and a mixing and stirring assembly, slurry can be conveniently placed, installed and used through the movable box, the injected slurry can be conveniently mixed and stirred through the mixing and stirring assembly, the mixing and stirring assembly comprises a main motor, a rotating rod, stirring blades, a feeding port, a partition plate, a material pumping valve, a grouting pump and a grouting pipe, and the main motor is fixedly installed on one side of the movable box. Slurry is guided into the moving box to drive the main motor to drive the stirring blades to mix and stir the slurry for use, uniform distribution of all components in the slurry is ensured through mixing and stirring, a homogeneous mixture is formed, so that the performance of the slurry and the quality of a final pile body are improved, and pile holes are better filled with the uniform slurry.

Description

Technical Field

[0001] The present invention relates to the technical field of grouting equipment, and particularly relates to a post-grouting device for precast piles. Background Art

[0002] Post-grouting of precast piles means that after a certain period of time after the precast piles are formed, cement slurry is injected through the grouting ducts preset in the pile body and the pile tip and pile side grouting valves connected thereto, so that the soil bodies at the pile tip and pile side, including sediment and mud skin, are strengthened, which can greatly improve the bearing capacity of the pile tip and the soil layer near the pile tip, thereby greatly improving the bearing capacity of a single pile. Research and practice in recent years have found that post-grouting of precast piles can also greatly improve the bearing capacity of the pile tip and the soil layer near the pile tip, thereby greatly improving the bearing capacity of a single pile and reducing the settlement of the pile foundation. Compared with post-grouting of precast piles, precast piles also have the characteristics of higher and more stable bearing capacity, and more convenient and environmentally friendly construction.

[0003] In the existing document 202120368920.4, the slurry cannot be mixed and stirred before grouting, and different amounts of grouting are required for different precast piles during slurry perfusion, and the perfusion amount cannot be controlled. Moreover, since the number of precast piles is large, manual unified perfusion is required and then unified closing is needed, which greatly reduces the work efficiency. Therefore, the present invention proposes a post-grouting device for precast piles to solve the problems existing in the prior art. Summary of the Invention

[0004] In view of the above problems, the purpose of the present invention is to propose a post-grouting device for precast piles. The post-grouting device for precast piles drives the main motor to drive the stirring blades to mix and stir the slurry by introducing the slurry into the moving box. The mixing and stirring ensure that all components in the slurry are evenly distributed to form a homogeneous mixture, thereby improving the performance of the slurry and the quality of the final pile body. The uniform slurry can better fill the pile hole, reduce voids and honeycomb defects, thereby improving the strength and durability of the pile body. Through the post-grouting technology, the bearing capacity of the precast pile can be significantly improved.

[0005] To achieve the object of the present invention, the present invention is achieved through the following technical solutions: A post-grouting device for precast piles, comprising a precast pile main body, a moving box and a mixing and stirring assembly. A moving box is arranged on one side of the precast pile main body, and a mixing and stirring assembly is rotatably installed inside the moving box. The slurry is poured into the precast pile main body for filling use. The moving box is provided for convenient placement and installation of the slurry. The mixing and stirring assembly is provided for convenient mixing and stirring of the injected slurry. The mixing and stirring assembly includes a main motor, a rotating rod, stirring blades, a feeding port, a partition board, a pumping valve, a grouting pump and a grouting pipe. A main motor is fixedly installed on one side of the moving box. A rotating rod is rotatably installed inside the moving box. The output end of the main motor is connected to the rotating rod. Multiple groups of stirring blades are fixedly installed on the surface of the rotating rod. A feeding port is opened on one side of the top of the moving box. A partition board is fixedly installed inside the moving box. A pumping valve is fixedly installed inside the partition board. A grouting pump is fixedly placed on the other side inside the moving box. A grouting pipe is fixedly installed above the grouting pump. The other end of the grouting pipe is connected to the precast pile main body.

[0006] Further improvement lies in that: Multiple groups of strengthening and fixing columns are fixedly installed on the surface of the precast pile main body. The strengthening and fixing columns are sequentially installed on the surface of the precast pile main body. Multiple groups of fixing steel bars are fixedly installed on the surface of the strengthening and fixing columns.

[0007] Further improvement lies in that: A precast pile tip is fixedly installed at the bottom of the precast pile main body. An inner connecting pipe is fixedly installed inside the precast pile main body. The inner connecting pipe is communicated with the precast pile tip.

[0008] Further improvement lies in that: A leading-out pipe is fixedly installed inside the precast pile tip. A first discharge port is fixedly opened on the outside of the precast pile tip. The first discharge port is communicated with the leading-out pipe.

[0009] Further improvement lies in that: Multiple groups of outer connecting pipes are fixedly installed on the surface of the precast pile main body. A second discharge port is opened on the surface of the outer connecting pipe. The outer connecting pipe is communicated with the second discharge port.

[0010] Further improvement lies in that: A top cover is fixedly installed at the top of the precast pile main body. A rotating shaft is rotatably installed at the top of the top cover. The grouting pipe is connected to the top cover.

[0011] Further improvement lies in that: A rotating thread is rotatably arranged above the precast pile tip.

[0012] Further improvement lies in that: A safety valve is fixedly installed on one side of the moving box. The output end of the safety valve is connected to the grouting pump.

[0013] A further improvement lies in that: a maintenance door is movably installed on the front of the mobile box.

[0014] A further improvement lies in that: control buttons are fixedly installed on the front of the mobile box, the control buttons are electrically connected to the inside of the mobile box, and universal wheels are fixedly installed at the bottom of the mobile box.

[0015] The beneficial effects of the present invention are as follows: through the mutual cooperation of the main motor, the rotating rod, the stirring blades, the feeding port, the partition board, the material extraction valve, the grouting pump and the grouting pipe, by introducing the slurry into the mobile box and driving the main motor to drive the stirring blades to mix and stir the slurry, the mixing and stirring ensure that all components in the slurry are evenly distributed, forming a homogeneous mixture to improve the performance of the slurry and the quality of the final pile body. The uniform slurry can better fill the pile hole, reduce voids and honeycomb defects, thereby improving the strength and durability of the pile body. Through the post-grouting technology, the bearing capacity of the precast pile can be significantly improved, the friction force and end resistance between the pile and the soil body can be enhanced, and the use of the grouting pump and the grouting pipe for grouting can fill the gap between the pile body and the soil body, reduce the settlement of the pile foundation, and improve the stability of the building. After grouting, the overall performance of the pile foundation is improved, including the uplift resistance, shear resistance and seismic performance. The setting of the precast pile tip can adapt to different geological conditions, greatly improving the practicability of the device. By improving the bearing capacity of the pile foundation and reducing the settlement, the number and depth of the pile foundation are reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 It is a front view of the present invention;

[0018] Figure 2 It is a schematic diagram of the precast pile tip of the present invention;

[0019] Figure 3 It is a sectional view of the mobile box of the present invention.

[0020] Illustrations: 1. Precast pile body; 2. Moving box; 3. Main motor; 4. Rotating rod; 5. Mixing blade; 6. Feed inlet; 7. Partition; 8. Extraction valve; 9. Grouting pump; 10. Grouting pipe; 11. Reinforced fixed column; 12. Fixed steel bar; 13. Precast pile tip; 14. Internal connecting pipe; 15. Lead-out pipe; 16. First discharge port; 17. External pipe; 18. Second discharge port; 19. Top cover; 20. Rotating shaft; 21. Rotating thread; 22. Safety valve; 23. Maintenance door; 24. Control button; 25. Universal wheel. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms installation, connection and connection should be understood in a broad sense, for example, it 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 a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] The cavity post-grouting device for hollow precast piles provided in document 202120368920.4 does not require the installation of grouting pipes during the pile sinking process, which improves construction efficiency. At the same time, it also effectively solves the problem of how to protect the grouting pipes in the existing post-grouting technology, and the grouting pipes are reusable, saving construction materials. However, the slurry needs to be stirred before grouting, which makes the injected slurry have poor use effect and leads to poor closed crack effect. In the application, the stirring component is set up to control the injection amount by introducing the slurry through the set connecting pipe, which is convenient for use in various situations and improves the functionality and practicality of the device.

[0024] according to Figure 1 , Figure 2 , Figure 3As shown in the figure, this embodiment provides a post-grouting device for precast piles, including a precast pile main body 1, a moving box 2, and a mixing and stirring assembly. A moving box 2 is arranged on one side of the precast pile main body 1, and a mixing and stirring assembly is rotatably installed inside the moving box 2. The slurry is filled by setting the precast pile main body 1. The moving box 2 is convenient for placing and installing the slurry. The mixing and stirring assembly is convenient for mixing and stirring the injected slurry. The mixing and stirring assembly includes a main motor 3, a rotating rod 4, stirring blades 5, a feed inlet 6, a partition plate 7, a pumping valve 8, a grouting pump 9, and a grouting pipe 10. A main motor 3 is fixedly installed on one side of the moving box 2, and the motor model is Y90S-2. A rotating rod 4 is rotatably installed inside the moving box 2. The output end of the main motor 3 is connected to the rotating rod 4. By driving the main motor 3, the internal rotating rod 4 is driven to rotate. Multiple groups of stirring blades 5 are fixedly installed on the surface of the rotating rod 4. The rotating rod 4 drives the stirring blades 5 to mix and stir the slurry. A feed inlet 6 is opened on one side of the top of the moving box 2. Through the feed inlet 6, the slurry is conveniently introduced into the moving box 2 for use. A partition plate 7 is fixedly installed inside the moving box 2. Through the partition plate 7, the inside of the moving box 2 is divided. The inside of the moving box 2 is divided into a stirring chamber and a material guiding chamber. A pumping valve 8 is fixedly installed inside the partition plate 7. Through the pumping valve 8, the slurry stirred in the stirring chamber is introduced into the material guiding chamber. A grouting pump 9 is fixedly placed on the other side inside the moving box 2. A grouting pipe 10 is fixedly installed above the grouting pump 9. Through the grouting pump 9, the slurry inside the moving box 2 is pumped out and introduced into the precast pile main body 1 through the grouting pipe 10. The other end of the grouting pipe 10 is connected to the precast pile main body 1, and through the grouting pump 9, the injection volume can be conveniently controlled for use.

[0025] Multiple groups of strengthening and fixing columns 11 are fixedly installed on the surface of the precast pile main body 1. Through the setting of the strengthening and fixing columns 11, the surface of the precast pile main body 1 is stably fixed. The strengthening and fixing columns 11 are successively installed on the surface of the precast pile main body 1. Multiple groups of fixing steel bars 12 are fixedly installed on the surface of the strengthening and fixing columns 11. Through the fixing steel bars 12, the strengthening and fixing columns 11 are stably fixed. The setting of multiple groups of fixing components is used for stable grouting of the precast pile main body 1 to improve the stability of the device.

[0026] A precast pile tip 13 is fixedly installed at the bottom of the precast pile main body 1. Through the setting of the precast pile tip 13, it is convenient to be introduced into the construction site. An inner connecting pipe 14 is fixedly installed inside the precast pile main body 1. The inner connecting pipe 14 is communicated with the precast pile tip 13. Through the setting of the inner connecting pipe 14, the slurry is introduced into the precast pile tip 13 for use.

[0027] A discharge pipe 15 is fixedly installed inside the precast pile tip 13. A first discharge port 16 is fixedly formed on the outer side of the precast pile tip 13. The first discharge port 16 is communicated with the discharge pipe 15. The slurry introduced into the inner connecting pipe 14 is discharged and used through the arrangements of the discharge pipe 15 and the first discharge port 16, facilitating the completion of the first slurry addition.

[0028] Multiple outer connecting pipes 17 are fixedly installed on the surface of the precast pile body 1. A second discharge port 18 is formed on the surface of the outer connecting pipe 17. Through the arrangements of the outer connecting pipe 17 and the second discharge port, it is convenient to secondarily discharge the introduced slurry. The outer connecting pipe 17 is communicated with the second discharge port 18, and the slurry exceeding the second discharge port 18 is discharged and used.

[0029] A top cover 19 is fixedly installed at the top of the precast pile body 1. Through the setting of the top cover 19, it is convenient to close the top of the precast pile body 1 when introducing slurry, facilitating the introduction of slurry. A rotating shaft 20 is fixedly and rotatably installed on the top of the top cover 19. The grouting pipe 10 is connected to the top cover 19. Through the rotating shaft 20, it is convenient to install the top cover 19.

[0030] A rotating thread 21 is rotatably arranged above the precast pile tip 13. Through the setting of the rotating thread 21, it is convenient to install the precast pile tip 13 at the bottom of the precast pile body 1.

[0031] A safety valve 22 is fixedly installed on one side of the mobile box 2. The output end of the safety valve 22 is connected to the grouting pump 9. Through the setting of the safety valve 22, when the pressure and temperature of the internal grouting pump 9 exceed the pressure value set by the safety valve 22, the safety valve 22 will automatically open to release the excess medium to prevent the pressure or temperature from rising continuously, thereby protecting the equipment and pipelines from damage. Once the pressure or temperature drops to the safe range, the safety valve 22 will automatically close and restore the normal sealed state.

[0032] A maintenance door 23 is movably installed on the front of the mobile box 2. By opening the maintenance door 23, it is convenient to perform maintenance and cleaning inside.

[0033] Control buttons 24 are fixedly installed on the front of the mobile box 2. Through the setting of the control buttons 24, the entire device is operated and controlled. The control buttons 24 are electrically connected to the inside of the mobile box 2. Universal wheels 25 are fixedly installed at the bottom of the mobile box 2. Through the setting of the universal wheels 25, it is convenient to flexibly move the mobile box 2.

[0034] When the post-grouting equipment of the precast pile is in use, the slurry is poured through the setting of the precast pile body 1 for filling. The setting of the moving box 2 facilitates the placement and installation of the slurry. The setting of the mixing and stirring component facilitates the mixing and stirring treatment of the injected slurry. The driving main motor 3 drives the rotating rod 4 inside to rotate, and the rotating rod 4 drives the stirring blades 5 to mix and stir the slurry. The setting of the feed port 6 facilitates the introduction of the slurry into the moving box 2. The setting of the partition plate 7 divides the inside of the moving box 2, dividing the inside of the moving box 2 into a stirring chamber and a material guiding chamber. The setting of the pumping valve 8 guides the slurry stirred in the stirring chamber into the material guiding chamber. The setting of the grouting pump 9 pumps out the slurry inside the moving box 2 and guides the slurry into the precast pile body 1 through the grouting pipe 10. And the setting of the grouting pump 9 facilitates the control of the injection volume. The setting of the strengthening fixing column 11 stably fixes the surface of the precast pile body 1. The fixing steel bar 12 stably fixes the strengthening fixing column 11. The setting of multiple groups of fixing components stably grouts the precast pile body 1 to improve the stability of the device. The setting of the precast pile tip 13 facilitates the introduction into the construction site. The setting of the inner connecting pipe 14 guides the slurry into the precast pile tip 13. The setting of the outlet pipe 15 and the first discharge port 16 discharges the slurry introduced into the inner connecting pipe 14, facilitating the completion of the first slurry addition. The setting of the outer connecting pipe 17 and the second material port facilitates the secondary discharge of the introduced slurry, discharging the slurry exceeding the second discharge port 18. The setting of the top cover 19 facilitates the closing of the top of the precast pile body 1 when introducing the slurry, facilitating the introduction of the slurry. The rotating shaft 20 facilitates the installation of the top cover 19. The setting of the rotating thread 21 facilitates the installation of the precast pile tip 13 at the bottom of the precast pile body 1. The setting of the safety valve 22 will automatically open when the pressure and temperature inside the grouting pump 9 exceed the pressure value set by the safety valve 22, releasing the excess medium to prevent the pressure or temperature from rising continuously, thereby protecting the equipment and pipelines from damage. Once the pressure or temperature drops to the safe range, the safety valve 22 will automatically close and return to the normal sealed state. Opening the maintenance door 23 facilitates the maintenance and cleaning of the inside. The setting of the control button 24 operates and controls the entire device. The setting of the universal wheels 25 facilitates the flexible movement of the moving box 2.

[0035] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A post-grouting device for precast piles, comprising a precast pile main body (1), a moving box (2) and a mixing and stirring assembly, characterized in that: On one side of the precast pile body (1), a moving box (2) is provided. Inside the moving box (2), a mixing and stirring assembly is rotatably installed. The mixing and stirring assembly includes a main motor (3), a rotating rod (4), stirring blades (5), a feed inlet (6), a partition board (7), a material extraction valve (8), a grouting pump (9), and a grouting pipe (10). A main motor (3) is fixedly installed on one side of the moving box (2). A rotating rod (4) is rotatably installed inside the moving box (2). Multiple groups of stirring blades (5) are fixedly installed on the surface of the rotating rod (4). A feed inlet (6) is opened on one side of the top of the moving box (2). A partition board (7) is fixedly installed inside the moving box (2). A material extraction valve (8) is fixedly installed inside the partition board (7). A grouting pump (9) is fixedly placed on the other side inside the moving box (2). A grouting pipe (10) is fixedly installed above the grouting pump (9). The other end of the grouting pipe (10) is connected to the precast pile body (1).

2. The post-grouting device for a precast pile according to claim 1, characterized in that: Multiple groups of strengthening and fixing columns (11) are fixedly installed on the surface of the precast pile body (1). The strengthening and fixing columns (11) are successively installed on the surface of the precast pile body (1). Multiple groups of fixing steel bars (12) are fixedly installed on the surface of the strengthening and fixing columns (11).

3. The post-grouting device for a precast pile according to claim 1, characterized in that: A precast pile tip (13) is fixedly installed at the bottom of the precast pile body (1). An inner connecting pipe (14) is fixedly installed inside the precast pile body (1). The inner connecting pipe (14) is communicated with the precast pile tip (13).

4. The post-grouting device for a precast pile according to claim 3, characterized in that: A lead-out pipe (15) is fixedly installed inside the precast pile tip (13). A first discharge port (16) is fixedly opened on the outer side of the precast pile tip (13). The first discharge port (16) is communicated with the lead-out pipe (15).

5. The post-grouting device for a precast pile according to claim 1, characterized in that: Multiple groups of outer connecting pipes (17) are fixedly installed on the surface of the precast pile body (1). A second discharge port (18) is opened on the surface of the outer connecting pipe (17). The outer connecting pipe (17) is communicated with the second discharge port (18).

6. The post-grouting device for a precast pile according to claim 1, characterized in that: A top cover (19) is fixedly installed at the top of the precast pile body (1). A rotating shaft (20) is fixedly rotatably installed on the top of the top cover (19). The grouting pipe (10) is connected to the top cover (19).

7. The post-grouting device for a precast pile according to claim 3, characterized in that: A rotating thread (21) is rotatably arranged above the precast pile tip (13).

8. The post-grouting device for a precast pile according to claim 1, characterized in that: A safety valve (22) is fixedly installed on one side of the moving box (2). The output end of the safety valve (22) is connected to the grouting pump (9).

9. The post-grouting device for a precast pile according to claim 1, characterized in that: A maintenance door (23) is movably installed on the front of the moving box (2).

10. The post-grouting device for a precast pile according to claim 1, characterized in that: Control buttons (24) are fixedly installed on the front of the moving box (2). The control buttons (24) are electrically connected to the inside of the moving box (2). Universal wheels (25) are fixedly installed at the bottom of the moving box (2).

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