Prestressed concrete pipe pile grouting equipment

Abstract

The invention relates to the technical field of building construction, in particular to prestressed concrete pipe pile grouting equipment which comprises a grouting vehicle used for conveying raw materials and a grouting cylinder used for conducting final treatment on the raw materials, a water tank is fixedly connected to the grouting vehicle, one side of the water tank is communicated with a water conveying pipe, and the other side of the water conveying pipe is communicated with a water pump. The end, away from the water tank, of the water conveying pipe communicates with the top of the grouting barrel, the top of the water tank is fixedly connected with a mud box, one side of the mud box communicates with a mud conveying pipe, and one end of the mud conveying pipe communicates with the top of the grouting barrel. A flow control cover is arranged at the end, extending into the inner cavity of the grouting barrel, of the water conveying pipe, and a water leakage hole is formed in the middle of the flow control cover, two kinds of cement paste with different concentrations can be obtained, grouting can be directly conducted after completion without a long pipeline, the problem that the thickness of the cement paste is changed is avoided, the grouting standard is met, and the grouting quality is improved.

Description

Technical Field

[0001] The invention relates to the technical field of soil pipe pile grouting, in particular to a prestressed concrete pipe pile grouting device. Background Art

[0002] Prestressed concrete pipe piles have poor penetration ability and obvious soil squeezing effect, while the average ground reaction force of high-rise buildings is large, and the required prestressed concrete pipe piles are longer and denser, which limits the application of prestressed concrete pipe piles in taller high-rise buildings. Traditional cast-in-place concrete piles can greatly improve their single pile ultimate bearing capacity through the post-grouting process after the concrete pouring is completed, thereby achieving the purpose of reducing the pile length or the number of piles and saving construction costs.

[0003] Most of the grouting equipment for prestressed concrete pipe piles mixes the cement slurry in a mixing device, and then injects the pre-mixed cement slurry into the prestressed concrete pipe piles through a pipe. However, there are small gaps in the prestressed concrete pipe piles that need to be filled. At this time, the grouting head needs to be inserted into the prestressed concrete pipe piles through a pipe. Usually, the length of the prestressed concrete pipe piles is long, and the required pipe is also very long.

[0004] However, according to different filling needs, the required cement slurry thickness is divided into thick cement slurry and thin cement slurry, and the thickness of the cement slurry is related to the added water. When it is transported downward through a longer pipeline, the stirred cement slurry cannot be directly applied to the place where grouting is required, and it will be transported for a long distance in the pipeline. During this period of time, the cement slurry discharged from the end of the pipeline will harden, which is inconsistent with the thickness of the cement slurry obtained by pre-mixing. This difference in thickness will affect the grouting and reduce the grouting effect. Summary of the invention

[0005] The purpose of the present invention is to provide a prestressed concrete pipe pile grouting equipment, which can control the water volume and stirring speed by rotating a rotating rod in different directions, so that two cement slurries with different concentrations can be obtained. After completion, grouting can be carried out directly without passing through a long pipeline, thereby avoiding the problem of cement slurry thickness changes. The stirred cement slurry can be directly obtained without causing time difference and reducing the grouting effect.

[0006] To achieve the above-mentioned purpose, a prestressed concrete pipe pile grouting equipment is provided, comprising a grouting vehicle for conveying raw materials and a grouting barrel for final processing of the raw materials, the grouting vehicle is fixedly connected to a water tank, one side of the water tank is connected to a water delivery pipe, one end of the water delivery pipe away from the water tank is connected to the top of the grouting barrel, the top of the water tank is fixedly connected to a mud box, one side of the mud box is connected to a mud delivery pipe, one end of the mud delivery pipe is connected to the top of the grouting barrel; The water pipe is extended to one end of the grouting barrel inner cavity and is provided with a flow control cover, a water leakage hole is opened in the middle of the flow control cover, the flow control cover is rotatably connected to the water pipe through a first hinge, and the flow control cover is in contact with the water pipe, a convex block is provided at the bottom of the flow control cover, the convex block of the flow control cover is rotatably connected to a vertical rod through a second hinge, a rotating rod is provided at the middle position of the grouting barrel inner cavity, a circular ring is fixedly connected to the rotating rod, a rotating plate is fixedly connected to the surface of the circular ring, a sliding rod is provided at one end of the rotating plate, the sliding rod is slidably connected to the inside of the rotating plate, and contacts with the vertical rod when the sliding rod slides to the maximum length; When the rotating rod rotates clockwise, it drives the sliding rod to contact the vertical rod to open the flow control cover, so that the water flow becomes larger. When the rotating rod rotates counterclockwise, the sliding rod contacts the vertical rod and the vertical rod bends, so that the flow control cover and the water pipe are still fitted.

[0007] As a further improvement of the present technical solution, a mounting plate is fixedly connected to the inside of the grouting barrel, two groups of torsion springs are arranged on the surface of the mounting plate, a limiting plate is fixedly connected to the mounting plate, the limiting plate contacts with the torsion spring to limit the torsion spring, the elastic end of the torsion spring extends to the bottom of the flow control cover and contacts with the bottom of the flow control cover, and the elastic force of the torsion spring makes the flow control cover and the water pipe fit more closely.

[0008] As a further improvement of the present technical solution, the top of the grouting barrel and the position between the mud pipe and the water pipe is fixedly connected to a chassis, the inner cavity of the chassis is fixedly connected to a motor, the output end of the motor is fixedly connected to a connecting rod, the end of the connecting rod away from the motor is rotatably connected to the inner wall of the chassis, the surface of the connecting rod is fixedly connected to a first bevel gear, the top of the rotating rod passes through the bottom of the chassis and extends to the inner cavity of the chassis, the end of the rotating rod extending to the inner cavity of the chassis is fixedly connected to a second bevel gear, and the second bevel gear is meshed with the first bevel gear.

[0009] As a further improvement of the technical solution, a stirring blade for stirring is fixedly connected to the surface of the rotating rod.

[0010] As a further improvement of the technical solution, the bottom of the grouting cylinder is fixedly connected to a docking plate, the surface of the docking plate is provided with four groups of leakage holes, the bottom of the docking plate is fixedly connected to a spraying bucket, and the spraying bucket is connected to the grouting cylinder through the leakage holes.

[0011] As a further improvement of the present technical solution, the bottom end of the rotating rod is rotatably connected to the top of the docking plate, and a connecting plate is fixedly connected to the surface of the bottom end of the rotating rod. Four groups of fan-shaped plates corresponding to the leakage holes are fixedly connected to the connecting plate, and the bottom of the fan-shaped plate is in contact with the top of the docking plate, and the shape of the fan-shaped plate is smaller than the leakage hole.

[0012] As a further improvement of the present technical solution, a retraction plate is provided on one side of the fan-shaped plate, one side of the retraction plate is slidably connected to the inside of the fan-shaped plate, a second stopper is fixedly connected to the bottom of the side of the retraction plate away from the fan-shaped plate, and a first stopper matched with the second stopper is fixedly connected to the docking plate.

[0013] As a further improvement of the present technical solution, when the docking plate rotates clockwise, the second stop block contacts the first stop block to fully expand the contraction plate, thereby increasing the resistance to mud; when the docking plate rotates counterclockwise, the second stop block contacts the first stop block to fully contract the contraction plate, thereby reducing the resistance to mud.

[0014] As a further improvement of the technical solution, a plurality of baffles are fixedly connected to the inner wall of the grouting cylinder.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. In the grouting equipment for prestressed concrete pipe piles, after the pre-treated cement and water enter the grouting barrel through the mud conveying pipe and the water conveying pipe, the rotating rod is rotated clockwise or counterclockwise according to the required thickness of the cement slurry. When the rotating rod is in the clockwise direction, the sliding rod contacts the vertical rod during the rotation process, driving the vertical rod to move. The movement of the vertical rod drives the flow control cover to open. The flow control cover is opened to allow the water to flow out of the water conveying pipe directly, thereby increasing the amount of water flowing into the grouting barrel. The stirring blades are then quickly rotated and stirred to obtain a thinner cement slurry, which is quickly discharged and directly grouted to the required position of the prestressed concrete pipe pile, or a thicker cement slurry is obtained by slowly rotating the rotating rod counterclockwise and stirring only a small amount of water through the leakage hole. The water volume and stirring speed are controlled by rotating the rotating rod in different directions, so that two cement slurries of different concentrations can be obtained. After completion, grouting can be directly carried out without passing through a long pipeline, thereby avoiding the problem of cement slurry thickness change, meeting the grouting standard, and improving the grouting quality.

[0016] 2. In the prestressed concrete pipe pile grouting equipment, when the rotating rod rotates clockwise or counterclockwise, different viscosities of cement slurry can be obtained, and the rotation of the rotating rod also drives the fan-shaped plate to rotate. When the rotating rod rotates clockwise, the fan-shaped plate also rotates clockwise, and clockwise rotation obtains a thinner cement slurry. At this time, the flow rate of the slurry is relatively large, and the clockwise rotation of the fan-shaped plate drives the shrinkage plate to rotate. During the rotation of the shrinkage plate, the second stopper at the bottom contacts the first stopper on the docking plate, and the shrinkage plate opens under the action of resistance. When the shrinkage plate is fully opened, the coverage area is increased, and the position corresponding to the leakage hole is blocked, and the flow rate is controlled at a suitable grouting speed. When the fan plate rotates counterclockwise, the second stopper at the bottom contacts the first stopper on the docking plate during the rotation of the shrinkage plate, and the shrinkage plate shrinks back into the fan-shaped plate under the action of resistance. When the shrinkage plate is fully shrunk, the coverage area is reduced, so that the area of ​​the leakage hole is increased, and the thicker one can leak out quickly, which is convenient for grouting. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a structural schematic diagram of the grouting tube of the present invention; Figure 3 It is a structural schematic diagram of the chassis of the present invention; Figure 4 It is a schematic diagram of the internal structure of the grouting tube of the present invention; Figure 5 It is a schematic diagram of the structure of the stirring blade of the present invention; Figure 6 It is a schematic structural diagram of the torsion spring of the present invention; Figure 7 It is a structural schematic diagram of the vertical rod of the present invention; Figure 8 It is a structural schematic diagram of the flow control cover of the present invention; Fig. 9 It is a structural schematic diagram of the spraying bucket of the present invention; Fig.10 It is a structural schematic diagram of the docking plate of the present invention; Fig.11 It is a structural schematic diagram of the fan-shaped plate of the present invention; Fig.12 It is a structural schematic diagram of the rotating plate of the present invention.

[0018] The meaning of each number in the figure is: 1. Grouting truck; 2. Mud box; 3. Mud pipe; 4. Water tank; 5. Water pipe; 6. Grouting barrel; 7. Chassis; 8. Motor; 9. Connecting rod; 10. First bevel gear; 11. Second bevel gear; 12. Rotating rod; 13. Mixing blade; 14. Flow control cover; 15. First hinge; 16. Mounting plate; 17. Torsion spring; 18. Limiting plate; 19. Leakage hole; 20. Vertical rod; 21. Second hinge; 22. Ring; 23. Rotating plate; 24. Sliding rod; 25. Baffle; 26. Spraying bucket; 27. Docking plate; 28. Leakage hole; 29. ​​First stopper; 30. Connecting plate; 31. Fan-shaped plate; 32. Contraction plate; 33. Second stopper. DETAILED DESCRIPTION

[0019] 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.

[0020] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0021] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0022] See also Figure 1-Figure 12 As shown, the purpose of this embodiment is to provide a prestressed concrete pipe pile grouting equipment, including a grouting vehicle 1 for conveying raw materials and a grouting tube 6 for final processing of the raw materials, the grouting vehicle 1 is fixedly connected to a water tank 4, one side of the water tank 4 is connected to a water delivery pipe 5, one end of the water delivery pipe 5 away from the water tank 4 is connected to the top of the grouting tube 6, the top of the water tank 4 is fixedly connected to a mud box 2, one side of the mud box 2 is connected to a mud delivery pipe 3, one end of the mud delivery pipe 3 is connected to the top of the grouting tube 6; A flow control cover 14 is provided at one end of the water pipe 5 extending to the inner cavity of the grouting tube 6, a water leakage hole 19 is opened in the middle of the flow control cover 14, the flow control cover 14 is rotatably connected to the water pipe 5 through a first hinge 15, and the flow control cover 14 is fitted with the water pipe 5, a convex block is provided at the bottom of the flow control cover 14, and the convex block of the flow control cover 14 is rotatably connected to a vertical rod 20 through a second hinge 21, a rotating rod 12 is provided at the middle position of the inner cavity of the grouting tube 6, a circular ring 22 is fixedly connected to the rotating rod 12, a rotating plate 23 is fixedly connected to the surface of the circular ring 22, a sliding rod 24 is provided at one end of the rotating plate 23, the sliding rod 24 is slidably connected to the inside of the rotating plate 23, and when the sliding rod 24 slides to the maximum length, it contacts the vertical rod 20; When the rotating rod 12 rotates clockwise, the sliding rod 24 contacts the vertical rod 20 to open the flow control cover 14, so that the water flow becomes larger. When the rotating rod 12 rotates counterclockwise, the sliding rod 24 contacts the vertical rod 20 and the vertical rod 20 bends so that the flow control cover 14 and the water pipe 5 are still in contact.

[0023] When the pre-treated cement and water enter the grouting tube 6 through the mud pipe 3 and the water pipe 5, the viscosity of the mud injected through the mud pipe 3 is greater than that of the normal grouting mud. There is very little water in such mud, and the viscosity will not change significantly when it flows in the pipeline. At the same time, the less water also ensures that the mud is well mixed with the water flow in the subsequent water pipe 5 to obtain a mud that is more suitable for grouting. Then, according to the required viscosity of the cement slurry, the rotating rod 12 is rotated clockwise or counterclockwise. When the rotating rod 12 rotates clockwise, it drives the rotating plate 23 to rotate. The rotating plate 23 rotates Under the action of centrifugal force, the sliding rod 24 is thrown out of the rotating plate 23. At this time, the sliding rod 24 contacts the vertical rod 20 during the rotation of the rotating plate 23, driving the vertical rod 20 to move. At the same time, the movement of the vertical rod 20 drives the flow control cover 14 to open. The flow control cover 14 opens gradually with the movement of the vertical rod 20. The opening is gradually opened from small to large, and the water flow through the opening opened by the flow control cover 14 gradually increases, increasing the amount of water flowing into the grouting tube 6. Then, the stirring blade 13 is quickly rotated and stirred to obtain a thinner cement slurry, which is quickly discharged and grouting is directly performed on the required position of the prestressed concrete pipe pile; A thicker cement slurry is obtained by slowly rotating the rotating rod 12 counterclockwise and stirring only a small amount of water through the leakage hole 19. The water volume and the stirring speed are controlled by rotating the rotating rod 12 in different directions, and two cement slurries of different concentrations can be obtained. After completion, grouting can be carried out directly without passing through a long pipeline, avoiding the problem of changes in cement slurry thickness, meeting the grouting standards, and improving the grouting quality.

[0024] A mounting plate 16 is fixedly connected to the inside of the grouting tube 6, and two groups of torsion springs 17 are arranged on the surface of the mounting plate 16. A limiting plate 18 is fixedly connected to the mounting plate 16, and the limiting plate 18 contacts with the torsion spring 17 to limit the torsion spring 17. The elastic end of the torsion spring 17 extends to the bottom of the flow control cover 14 and contacts with the bottom of the flow control cover 14. The elastic force of the torsion spring 17 makes the flow control cover 14 fit more closely to the water pipe 5.

[0025] The flow control cover 14 is tightly attached to the water pipe 5 by the elastic force of the torsion spring 17. When the sliding rod 24 contacts the vertical rod 20, since the vertical rod 20 is made of rubber material, it can bend and detach from the sliding rod 24 when it is pressed to the maximum position by the sliding rod 24, avoiding damage caused by excessive rigidity between the structures due to the use of hard materials. Therefore, the sliding rod 24 begins to bend the vertical rod 20, thereby driving the flow control cover 14 to compress the torsion spring 17 and open. When the sliding rod 24 continues to rotate, the vertical rod 20 separates from the sliding rod 24. At this time, under the elastic force of the torsion spring 17, the flow control cover 14 is again attached to the water pipe 5. At this time, the water continues to flow out through the leakage hole 19. When the sliding rod 24 rotates to the position of the vertical rod 20 again, the above operation is repeated. Under such operation, the water flows into the grouting barrel 6 at a speed greater than the outflow of the leakage hole 19 to dilute the cement slurry.

[0026] The sliding rod 24 is slidably connected to the inner cavity of the rotating plate 23 , but is also limited by the interior of the rotating plate 23 , and can move to a maximum position where it contacts the vertical rod 20 .

[0027] A chassis 7 is fixedly connected to the top of the grouting cylinder 6 and located between the mud pipe 3 and the water pipe 5. A motor 8 is fixedly connected to the inner cavity of the chassis 7. A connecting rod 9 is fixedly connected to the output end of the motor 8. The end of the connecting rod 9 away from the motor 8 is rotatably connected to the inner wall of the chassis 7. A first bevel gear 10 is fixedly connected to the surface of the connecting rod 9. The top of the rotating rod 12 passes through the bottom of the chassis 7 and extends to the inner cavity of the chassis 7. The end of the rotating rod 12 extending to the inner cavity of the chassis 7 is fixedly connected to a second bevel gear 11, which is meshed with the first bevel gear 10. A stirring blade 13 for stirring is fixedly connected to the surface of the rotating rod 12.

[0028] The rotation of the motor 8 drives the connecting rod 9 to rotate, and the rotation of the connecting rod 9 drives the first bevel gear 10 to rotate, and the first bevel gear 10 drives the second bevel gear 11 to rotate, and the rotation of the second bevel gear 11 drives the rotating rod 12 to rotate, and the rotation of the rotating rod 12 drives the stirring blade 13 to rotate. The clockwise and counterclockwise rotation of the rotating rod 12 is achieved by the forward and reverse rotation of the motor 8. At the same time, when the motor 8 controls the rotating rod 12 to rotate clockwise, the speed increases, and when the motor 8 controls the rotating rod 12 to rotate counterclockwise, the speed slows down, and the stirring speed is controlled by different speeds.

[0029] A docking plate 27 is fixedly connected to the bottom of the grouting tube 6 , and four groups of leakage holes 28 are opened on the surface of the docking plate 27 . A grouting bucket 26 is fixedly connected to the bottom of the docking plate 27 , and the grouting bucket 26 is connected to the grouting tube 6 through the leakage holes 28 .

[0030] The bottom end of the rotating rod 12 is rotatably connected to the top of the docking plate 27, and a connecting plate 30 is fixedly connected to the surface of the bottom end of the rotating rod 12. Four groups of fan-shaped plates 31 corresponding to the leakage holes 28 are fixedly connected to the connecting plate 30, and the bottom of the fan-shaped plate 31 contacts the top of the docking plate 27, and the shape of the fan-shaped plate 31 is smaller than the leakage hole 28.

[0031] A retractable plate 32 is provided on one side of the fan-shaped plate 31, and one side of the retractable plate 32 is slidably connected to the inside of the fan-shaped plate 31. A second stopper 33 is fixedly connected to the bottom of the side of the retractable plate 32 away from the fan-shaped plate 31, and a first stopper 29 adapted to the second stopper 33 is fixedly connected to the docking plate 27.

[0032] The fan-shaped radius of the leakage hole 28 is larger than the fan-shaped radius of the fan-shaped plate 31 and the contraction plate 32. A gap is generated between the fan-shaped front end of the fan-shaped plate 31 and the contraction plate 32 and the fan-shaped front end of the leakage hole 28, so that there is extra space for the cement slurry to flow out and it will not be blocked by the rotation of the fan-shaped plate 31 and the contraction plate 32. At the same time, the center position of the contraction plate 32 is rotationally connected to the center position of the fan plate 31, so the contraction plate 32 can be unfolded like a fan, but the interior of the fan plate 31 limits the contraction plate 32, and the contraction plate 32 can only be opened to a position that fits one side of the leakage hole 28.

[0033] When the docking plate 27 rotates clockwise, the second stopper 33 contacts the first stopper 29 to fully expand the contraction plate 32, thereby increasing the resistance to mud. When the docking plate 27 rotates counterclockwise, the second stopper 33 contacts the first stopper 29 to fully retract the contraction plate 32, thereby reducing the resistance to mud.

[0034] The lower height of the first stop 29 and the second stop 33 will not affect the rotation of the fan plate 31. Only when the second stop 33 contacts the first stop 29 will a larger resistance occur. When the rotating rod 12 rotates clockwise, the retractable plate 32 is pulled out and unfolded through this resistance. This process occurs during the rotation of the fan plate 31. When the retractable plate 32 is fully unfolded, the fan plate 31 runs to the farthest distance from the first stop 29. The movement of the fan plate 31 will drive the retractable plate 32 and the second stop 33 to break away from the contact with the first stop 29. At the same time, the retractable plate 32 remains in the unfolded state. Each subsequent passage through the first stop 29 can reinforce the unfolding of the retractable plate 32 through the resistance generated by the contact of the second stop 33 with it.

[0035] When the rotating rod 12 rotates counterclockwise, the shrinking plate 32 is pressed back into the inner part of the sector plate 31 through the above-mentioned operation direction rotation.

[0036] When the rotating rod 12 rotates clockwise or counterclockwise to obtain cement slurries of different viscosities, the rotation of the rotating rod 12 also drives the fan-shaped plate 31 to rotate. When the rotating rod 12 rotates clockwise, the fan-shaped plate 31 also rotates clockwise. Clockwise rotation obtains a thinner cement slurry. At this time, the flow rate of the slurry is relatively large, which is not conducive to grouting. The clockwise rotation of the fan-shaped plate 31 drives the shrinking plate 32 to rotate. During the rotation of the shrinking plate 32, the second stopper 33 at the bottom contacts the first stopper 29 on the docking plate 27. Under the action of resistance, the shrinking plate 32 opens. When the shrinking plate 32 is fully opened, the coverage area is increased, the gap position of the leakage hole 28 is blocked, the flow gap of the cement slurry is reduced, and the downward flow rate of the thinner cement slurry is reduced during the rotation process, and the flow rate is controlled at a suitable grouting speed. When the fan-shaped plate 31 rotates counterclockwise, the second stopper 33 at the bottom of the contraction plate 32 contacts the first stopper 29 on the docking plate 27 during the rotation process. Under the action of resistance, the contraction plate 32 contracts back into the fan-shaped plate 31. When the contraction plate 32 is fully contracted, the coverage area is reduced, so that the area of ​​the leakage hole 28 is increased, and the thicker liquid can leak out quickly, which is convenient for grouting.

[0037] When the rotating rod 12 rotates counterclockwise, the sliding rod 24 contacts the side of the vertical rod 20 without the second hinge 21 , so that when the sliding rod 24 contacts the vertical rod 20 during the rotation process, the vertical rod 20 will bend through the second hinge 21 and will not affect the movement of the sliding rod 24 .

[0038] The cement slurry processed in the grouting tube 6 can directly leak into the spraying bucket 26 through the four groups of leakage holes 28 on the docking plate 27, so it is blocked by the rotation of the fan plate 31 and the contraction plate 32 to control the speed of the cement slurry entering the spraying bucket 26 to prevent blockage or insufficient feeding.

[0039] The inner wall of the grouting tube 6 is fixedly connected with a plurality of baffles 25 .

[0040] Working principle: The prestressed concrete pile grouting equipment is mainly composed of a grouting vehicle 1, a grouting barrel 6, and a parallel water pipe 5 and a mud pipe 3. The water tank 4 on the grouting vehicle 1 is connected to the grouting barrel 6 through the water pipe 5, and the mud box 2 is connected to the grouting barrel 6 through the mud pipe 3. After the pre-treated cement slurry and water enter the grouting barrel 6 through the mud pipe 3 and the water pipe 5 respectively, the rotating rod 12 is rotated clockwise or counterclockwise according to the required thickness of the cement slurry. When the rotating rod 12 rotates clockwise, the rotating plate 23 is driven to rotate. The rotating plate 23 rotates and the sliding rod 24 is thrown out of the rotating plate 23 under the action of centrifugal force. At this time, the sliding rod 24 contacts the vertical rod 20 during the rotation of the rotating plate 23, driving the vertical rod 20 to move. At the same time, the movement of the vertical rod 20 drives the flow control cover 14 to open. The opening of the flow control cover 14 increases the amount of water flowing into the grouting barrel 6. The stirring blade 13 is then used to quickly rotate and stir to obtain a thinner cement slurry. At the same time, when the rotating rod 12 rotates clockwise, the fan-shaped plate 31 also rotates clockwise, and a thinner cement slurry is obtained by clockwise rotation. At this time, the flow rate of the slurry is relatively large. The clockwise rotation of the fan-shaped plate 31 drives the shrinking plate 32 to rotate. During the rotation of the shrinking plate 32, the second stopper 33 at the bottom contacts the first stopper 29 on the docking plate 27. Under the action of resistance, the shrinking plate 32 opens. When the shrinking plate 32 is fully opened, the coverage area is increased, and the position corresponding to the leakage hole 28 is blocked. During the rotation, the downward flow rate of the thinner cement slurry is reduced, and the flow rate is controlled at a suitable grouting temperature. Speed, fast discharge directly to the required position of the prestressed concrete pipe pile grouting, while stirring the cement slurry is also flowing downward, when the rotating rod 12 rotates clockwise or counterclockwise, different consistency of cement slurry can be obtained, the rotation of the rotating rod 12 also drives the fan-shaped plate 31 to rotate, when the fan-shaped plate 31 rotates counterclockwise, the second stopper 33 at the bottom of the shrinking plate 32 contacts the first stopper 29 on the docking plate 27 during the rotation process, and the shrinking plate 32 shrinks back to the inside of the fan-shaped plate 31 under the action of resistance, and when the shrinking plate 32 is fully shrunk, the coverage area is reduced, so that the area of ​​the leakage hole 28 is increased, and the thicker cement slurry can leak out quickly, which is convenient for grouting.

[0041] It should be noted that the slurry box 2 contains pre-treated cement slurry, which is thicker than conventional cement slurry.

[0042] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A prestressed concrete pile grouting device, comprising a grouting vehicle (1) for conveying raw materials and a grouting cylinder (6) for final processing of the raw materials, characterized in that: The grouting vehicle (1) is fixedly connected to a water tank (4), one side of the water tank (4) is connected to a water delivery pipe (5), one end of the water delivery pipe (5) away from the water tank (4) is connected to the top of the grouting barrel (6), the top of the water tank (4) is fixedly connected to a mud box (2), one side of the mud box (2) is connected to a mud delivery pipe (3), one end of the mud delivery pipe (3) is connected to the top of the grouting barrel (6); A flow control cover (14) is provided at one end of the water pipe (5) extending to the inner cavity of the grouting barrel (6), a water leakage hole (19) is provided in the middle of the flow control cover (14), the flow control cover (14) is rotatably connected to the water pipe (5) via a first hinge (15), and the flow control cover (14) is in close contact with the water pipe (5), a convex block is provided at the bottom of the flow control cover (14), and the convex block of the flow control cover (14) is rotatably connected to a vertical rod (20) via a second hinge (21), a rotating rod (12) is provided at the middle position of the inner cavity of the grouting barrel (6), a circular ring (22) is fixedly connected to the rotating rod (12), a rotating plate (23) is fixedly connected to the surface of the circular ring (22), a sliding rod (24) is provided at one end of the rotating plate (23), the sliding rod (24) is slidably connected to the inside of the rotating plate (23), and when the sliding rod (24) slides to a maximum length, it contacts the vertical rod (20); When the rotating rod (12) rotates clockwise, the sliding rod (24) is driven to contact the vertical rod (20) to open the flow control cover (14), thereby increasing the water flow; when the rotating rod (12) rotates counterclockwise, the sliding rod (24) is brought into contact with the vertical rod (20), and the vertical rod (20) is bent so that the flow control cover (14) and the water pipe (5) are still in contact.

2. The prestressed concrete pipe pile grouting equipment according to claim 1 is characterized in that: The interior of the grouting cylinder (6) is fixedly connected to a mounting plate (16), and two groups of torsion springs (17) are arranged on the surface of the mounting plate (16). A limiting plate (18) is fixedly connected to the mounting plate (16), and the limiting plate (18) contacts the torsion spring (17) to limit the torsion spring (17). The elastic end of the torsion spring (17) extends to the bottom of the flow control cover (14) and contacts the bottom of the flow control cover (14). The elastic force of the torsion spring (17) makes the flow control cover (14) and the water pipe (5) fit more closely.

3. The prestressed concrete pipe pile grouting equipment according to claim 1 is characterized in that: A chassis (7) is fixedly connected to the top of the grouting cylinder (6) and located between the mud delivery pipe (3) and the water delivery pipe (5); a motor (8) is fixedly connected to the inner cavity of the chassis (7); a connecting rod (9) is fixedly connected to the output end of the motor (8); an end of the connecting rod (9) away from the motor (8) is rotatably connected to the inner wall of the chassis (7); a first bevel gear (10) is fixedly connected to the surface of the connecting rod (9); a top end of the rotating rod (12) passes through the bottom of the chassis (7) and extends to the inner cavity of the chassis (7); an end of the rotating rod (12) extending to the inner cavity of the chassis (7) is fixedly connected to a second bevel gear (11); the second bevel gear (11) is meshed with the first bevel gear (10).

4. The prestressed concrete pipe pile grouting equipment according to claim 3 is characterized in that: A stirring blade (13) for stirring is fixedly connected to the surface of the rotating rod (12).

5. The prestressed concrete pipe pile grouting equipment according to claim 1 is characterized in that: The bottom of the grouting cylinder (6) is fixedly connected to a docking plate (27), the surface of the docking plate (27) is provided with four groups of leakage holes (28), the bottom of the docking plate (27) is fixedly connected to a grouting bucket (26), and the grouting bucket (26) is connected to the grouting cylinder (6) through the leakage holes (28).

6. The prestressed concrete pipe pile grouting equipment according to claim 5, characterized in that: The bottom end of the rotating rod (12) is rotatably connected to the top of the docking plate (27); a connecting plate (30) is fixedly connected to the surface of the bottom end of the rotating rod (12); four groups of fan-shaped plates (31) corresponding to the leakage holes (28) are fixedly connected to the connecting plate (30); the bottom of the fan-shaped plates (31) is in contact with the top of the docking plate (27); and the shape of the fan-shaped plates (31) is smaller than the leakage holes (28).

7. The prestressed concrete pipe pile grouting equipment according to claim 6, characterized in that: A contraction plate (32) is provided on one side of the fan-shaped plate (31), one side of the contraction plate (32) is slidably connected to the inside of the fan-shaped plate (31), a second stopper (33) is fixedly connected to the bottom of the contraction plate (32) away from the fan-shaped plate (31), and a first stopper (29) adapted to the second stopper (33) is fixedly connected to the docking plate (27).

8. The prestressed concrete pipe pile grouting equipment according to claim 7, characterized in that: When the docking plate (27) rotates clockwise, the second stopper (33) contacts the first stopper (29), so that the retractable plate (32) is fully extended, thereby increasing the resistance to mud. When the docking plate (27) rotates counterclockwise, the second stopper (33) contacts the first stopper (29), so that the retractable plate (32) is fully retracted.

9. The prestressed concrete pipe pile grouting equipment according to claim 1, characterized in that: A plurality of groups of baffles (25) are fixedly connected to the inner wall of the grouting cylinder (6).

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