Building concrete mixing pile
By designing concrete mixing piles and combining grouting trucks and mixing mechanisms, uniform mixing of soil and cement slurry is achieved, solving technical problems in foundation reinforcement, improving the safety and stability of the foundation in the environment, and achieving efficient and stable foundation reinforcement.
Patent Information
- Application Number
- CN202520424324.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-12
- Publication Date
- 2026-02-13
- Estimated Expiration
- 2035-03-12
AI Technical Summary
Existing foundation reinforcement methods, such as cement-soil mixing piles and high-pressure jet grouting piles, cannot guarantee the uniform distribution of the mixture during mixing or jetting, resulting in unstable foundation quality. Vibratory driven stone piles, on the other hand, are difficult to control due to the density of the crushed stone filling, which also causes differences in foundation strength and affects the safety and stability of the structure.
The method employs concrete mixing piles, which combine a grouting truck, a power unit, a mixing unit, and a grouting unit. The bidirectional rotation of the spiral blades and the mixing head cuts and mixes the concrete, while the cement slurry is injected through the grouting pipeline. This ensures thorough mixing of the soil and concrete. The method also utilizes disassembly and assembly components to enable quick replacement and stable connection of the mixing head.
It has achieved a stable improvement in the quality of foundation reinforcement, reduced construction time and costs, adapted to different geological conditions, improved construction efficiency and continuity, optimized mixing effect, and ensured construction quality.
Smart Images
Figure CN223907481U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the ground foundation reinforcing technique field in civil engineering and construction, especially a kind of building concrete mixing pile. BACKGROUND
[0002] In recent years, with the acceleration of urbanization, more and more engineering projects need to be built in poor geological conditions, which puts forward higher requirements for foundation treatment. Traditional foundation reinforcement methods, such as replacement method, preloading method, etc., although can improve the performance of foundation to some extent, but there are many limitations in construction period, cost and environmental protection, which is difficult to meet the demand of modern engineering for rapid and efficient. Under this background, concrete mixing pile as a new type of foundation reinforcement technology emerges as the times require, which improves the strength of foundation through deep mixing and stirring, and effectively reduces environmental pollution.
[0003] At present, in order to enhance the bearing capacity of foundation, the commonly used methods include but are not limited to: cement-soil mixing pile, cement slurry is injected into soil body by deep mixer, forming composite foundation with certain strength, this method has good environmental friendliness and construction efficiency, but due to the problem of mixing uniformity, it will lead to local inconsistent strength; high pressure jet grouting pile, using high pressure jet to impact and destroy soil, while pouring cement slurry, forming cylindrical consolidation body, this method has strong applicability for hard stratum, but the construction equipment is complex and the cost is high; vibration sinking pipe gravel pile, forming a cavity in foundation by vibration sinking pipe equipment, then backfilling gravel and vibrating, improving the bearing capacity of foundation, this method is ideal for treating sandy soil and silt, but the effect is not good for clay.
[0004] In the prior art, due to the difficulty of ensuring the uniform distribution of mixture during the stirring or spraying process of cement-soil mixing pile and high pressure jet grouting pile, the quality of foundation is unstable, and the vibration sinking pipe gravel pile is also difficult to control the filling density of gravel, which will also cause the difference of foundation strength, so as to easily cause the local weakness of foundation in bearing and other aspects, affecting the safety and stability of overall structure, therefore, a building concrete mixing pile is proposed to solve the above problems. UTILITY MODEL CONTENTS
[0005] In order to make up for the above shortcomings, the utility model provides a kind of building concrete mixing pile, which aims at improving the problem that the difference of foundation strength made by part of concrete mixing pile in prior art makes the quality of foundation unstable.
[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:
[0007] The utility model provides a kind of building concrete mixing pile, including grouting vehicle, the top of the grouting vehicle is fixedly connected with power mechanism, the output of the power mechanism is fixedly connected with slurry pipeline, the outer wall of the slurry pipeline is fixedly connected with stirring mechanism, the inner wall of the grouting vehicle is fixedly connected with baffle, the top of the baffle is fixedly connected with grouting mechanism, the outside of the grouting vehicle is provided with controller;
[0008] The stirring mechanism includes a drill rod, the inner wall of the drill rod is fixedly connected to the outer wall of the slurry pipeline, the outer wall of the drill rod is fixedly connected with a spiral blade one, the bottom of the drill rod is detachably connected with a stirring head, the outer wall of the stirring head is fixedly connected with a spiral blade two, and the bottom outer wall of the drill rod is fixedly connected with a dismounting assembly.
[0009] Through the above technical solution: the whole mixing pile is transported to the required place of the project by the grouting vehicle, and each mechanism is operated by the controller, so that the drill rod and the stirring head make vertical and rotary motion downward, so that the soil is cut and stirred by the rotation of the spiral blade one and the spiral blade two, and the concrete liquid is transported by the slurry pipeline, so that the concrete liquid and the soil are fully mixed.
[0010] As a further description of the above technical solution:
[0011] The dismounting assembly includes a mounting ring one, the inner wall of the mounting ring one is fixedly connected to the bottom outer wall of the drill rod, the top outer wall of the stirring head is fixedly connected with a mounting ring two, and the top of the stirring head is fixedly connected with a threaded ring.
[0012] Through the above technical solution: the mounting ring one and the mounting ring two are docked by screws, and the stirring head and the drill rod are docked by the threaded ring, so that the stable connection between the drill rod and the stirring head is stabilized by double connection, and the stirring head can be conveniently removed for replacement and maintenance.
[0013] As a further description of the above technical solution:
[0014] The power mechanism includes an air pump, the bottom of the air pump is fixedly connected to the top of the grouting vehicle, the output of the air pump is fixedly connected with a bearing table through a telescopic column, the inner wall of the bearing table is fixedly connected with a motor, the output of the motor is fixedly connected with a transmission disc, and the bottom of the transmission disc is fixedly connected to the top of the slurry pipeline.
[0015] Through the above technical solution: the whole mixing pile is moved in vertical direction by the operation of the air pump, and the drill rod and the stirring head are provided with rotary power by the motor, so that the soil is cut and stirred, the bearing table avoids that the air pump and the motor are directly connected, and the transmission disc is used to transmit the power of the motor to the slurry pipeline.
[0016] As a further description of the above technical solution:
[0017] The grouting mechanism comprises a temporary storage cylinder, the bottom of the temporary storage cylinder is fixedly connected to the top of the partition plate, the inner wall of the bottom of the temporary storage cylinder is fixedly connected with a pressure pump, the output end of the pressure pump is fixedly connected with a conveying pipe, and the other end of the conveying pipe is fixedly connected with a feeding box.
[0018] Through the above technical solution: the temporary storage cylinder is used for storing cement slurry, and the cement slurry is pressurized and delivered to the conveying pipe by the pressure pump, and then the cement slurry is transported to the feeding box for feeding operation.
[0019] As a further description of the above technical solution:
[0020] The outer wall of the threaded ring is threadedly connected to the inner wall of the bottom of the drill rod, and the bottom of the first mounting ring is detachably connected to the top of the second mounting ring by screws.
[0021] Through the above technical solution: the preliminary butt joint of the mixing head and the drill rod is realized by the threaded connection of the threaded ring at the bottom of the drill rod, and the butt joint of the mixing head and the drill rod is reinforced by screws, so that the drill rod and the mixing head can stably and synchronously move.
[0022] As a further description of the above technical solution:
[0023] The top of the grouting vehicle is provided with a feeding port, and the outer diameter of the feeding port is matched with the outer diameter of the top opening of the temporary storage cylinder.
[0024] Through the above technical solution: the cement slurry is poured into the feeding port, and the leakage of the cement slurry is avoided due to the same outer diameter of the feeding port and the temporary storage cylinder
[0025] As a further description of the above technical solution:
[0026] The outer wall of the conveying pipe is fixedly connected to the inner wall of the partition plate, and the other end of the conveying pipe is fixedly connected with a sealing ring.
[0027] Through the above technical solution: the conveying pipe can stably transport the cement slurry delivered by the pressure pump through the fixed connection of one end of the conveying pipe, and the leakage of the cement slurry during transportation is prevented by the sealing ring.
[0028] As a further description of the above technical solution:
[0029] The inner wall of the feeding box is rotatably connected to the outer wall of the slurry conveying pipeline, and the bottom of the feeding box is rotatably connected to the top of the drill rod.
[0030] By the technical scheme, the cement slurry is transported into the slurry conveying pipeline through the feeding box, and the feeding box is not rotated synchronously with the slurry conveying pipeline and the drill rod, so that the whole slurry conveying process is stable.
[0031] The utility model has the advantages of the following:
[0032] 1、 the utility model discloses, through the grouting vehicle in position, then through the controller start motor, air pump and pressure pump's start -stop, motor operation passes through the transmission disc transmission effect drive slurry conveying pipeline rotation and drive drill rod and mixing head rotation, thereby drive helical blade one and helical blade two rotation, mix the soil, and the pressure pump operation transports cement slurry into the slurry conveying pipeline and carries out grouting, and the soil slurry is mixed fully, and the air pump controls the drill rod depth, reaches the depth and reverse operation and continues grouting, until the drill rod completely exits the ground and forms the compact mixing pile, to this end ensures the construction quality and efficiency of concrete mixing pile, realizes the stable promotion of the effect of ground reinforcement, reduces construction time and cost simultaneously, adapts more extensive geological condition.
[0033] 2、 the utility model discloses, through the screw of dismantling installation ring, rotates mixing head and makes it relative rotation after using the thread ring separation, then inserts the new or repaired mixing head and rotates, so that the thread ring and drill rod carry out the butt joint, then the screw is hit into installation ring one and installation ring two between realization double -connected, to this end guarantee synchronous movement stability, realize mixing head quick dismounting replacement, so that the whole mixing pile can be flexibly adapted to different working conditions, adjusts mixing head type according to the soil condition and construction requirement in time, thereby optimizing the mixing effect, guaranteeing the construction quality of concrete mixing pile, and the equipment failure downtime is reduced, makes the construction process more coherent and efficient. BRIEF DESCRIPTION OF DRAWINGS
[0034] Figure 1 It is a three-dimensional schematic view of the building concrete mixing pile proposed in the utility model;
[0035] Figure 2 It is a structural schematic view of the drill rod of the building concrete mixing pile proposed in the utility model;
[0036] Figure 3 It is a feeding box structural schematic view of the building concrete mixing pile proposed in the utility model;
[0037] Figure 4 It is Figure 2 It is an enlarged view of A in the middle.
[0038] LEGEND:
[0039] 1, grouting car; 2, air pump; 3, bearing table; 4, motor; 5, transmission disc; 6, drill rod; 7, spiral blade one; 8, stirring head; 9, spiral blade two; 10, mounting ring one; 11, mounting ring two; 12, screw; 13, threaded ring; 14, feed inlet; 15, temporary storage cylinder; 16, pressure pump; 17, transport pipe; 18, feed tank; 19, grout pipeline; 20, partition; 21, controller. DETAILED DESCRIPTION
[0040] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.
[0041] REFERENCE Figures 1 to 3 An embodiment provided by the utility model: a building concrete mixing pile, including grouting car 1, grouting car 1 is used as the carrier of the whole concrete mixing pile device, and provides stable mounting platform for subsequent mechanism, the top of grouting car 1 is fixedly connected with power mechanism, the output end of power mechanism is fixedly connected with grout pipeline 19, grout pipeline 19 makes that mixing pile can simultaneously transport cement slurry into soil in the process of stirring, the outer wall of grout pipeline 19 is fixedly connected with stirring mechanism, the inner wall of grouting car 1 is fixedly connected with partition 20, the top of partition 20 is fixedly connected with grouting mechanism, the outside of grouting car 1 is provided with controller 21;
[0042] Stirring mechanism includes drill rod 6, the inner wall of drill rod 6 is fixedly connected on the outer wall of grout pipeline 19, plays the important role of transmission power and stirring soil, the outer wall of drill rod 6 is fixedly connected with spiral blade one 7, when drill rod 6 rotates under the drive of power mechanism, spiral blade one 7 can lift soil upwards, increases the contact area of soil and cement slurry, improves mixing effect, the bottom of drill rod 6 is detachably connected with stirring head 8, and stirring head 8 is used for continuously cutting and loosening soil body, so that it is mixed with cement slurry fully, the outer wall of stirring head 8 is fixedly connected with spiral blade two 9, and the mounting direction of spiral blade two 9 is opposite to that of spiral blade one 7, so that soil is stirred in different directions, so that concrete and soil are more fully mixed, and the bottom outer wall of drill rod 6 is fixedly connected with dismounting assembly;
[0043] The power mechanism comprises an air pump 2, the bottom of the air pump 2 is fixedly connected to the top of the grouting vehicle 1, during construction, the position of the drill rod 6 and the stirring head 8 can be adjusted according to different soil depths and stirring requirements through the operation of the air pump 2, the output end of the air pump 2 is fixedly connected with a bearing table 3 through an extension column, the bearing table 3 is used for providing a stable support point for the subsequent structure, and the acting end of the air pump 2 is avoided from being directly connected with the subsequent power structure, thereby playing a role of intermediate transition, the inner wall of the bearing table 3 is fixedly connected with a motor 4, the motor 4 is used for providing rotary power for the drill rod 6 and the stirring head 8 of the whole stirring pile device, the output end of the motor 4 is fixedly connected with a transmission disc 5, the bottom of the transmission disc 5 is fixedly connected to the top of the slurry conveying pipeline 19, the transmission disc 5 is used for transmitting the power of the motor 4, and the rotary power of the motor 4 is stably transmitted to the slurry conveying pipeline 19;
[0044] The grouting mechanism comprises a temporary storage cylinder 15, the bottom of the temporary storage cylinder 15 is fixedly connected to the top of the partition plate 20, the temporary storage cylinder 15 is used for storing cement slurry, thereby providing a temporary storage space for the grouting mechanism, the top of the grouting vehicle 1 is provided with a feeding port 14, the outer diameter of the feeding port 14 is matched with the top opening outer diameter of the temporary storage cylinder 15, so that the cement slurry can be conveniently injected into the temporary storage cylinder 15, the bottom inner wall of the temporary storage cylinder 15 is fixedly connected with a pressure pump 16, the pressure pump 16 provides power for the conveying of the cement slurry, the output end of the pressure pump 16 is fixedly connected with a conveying pipe 17, the outer wall of the conveying pipe 17 is fixedly connected to the inner wall of the partition plate 20, so that the fixed section of the conveying pipe 17 is stable, and then the other end of the conveying pipe 17 can be kept synchronous with the vertical movement of the drill rod 6, the other end outer side of the conveying pipe 17 is fixedly connected with a sealing ring, the conveying pipe 17 plays a role of conveying the cement slurry, and the sealing ring prevents the cement slurry from leaking during the conveying process, the other end of the conveying pipe 17 is fixedly connected with a feeding box 18, the inner wall of the feeding box 18 is rotatably connected to the outer wall of the slurry conveying pipeline 19, the bottom of the feeding box 18 is rotatably connected to the top of the drill rod 6, the feeding box 18 is used for conveying the cement slurry conveyed by the conveying pipe 17 into the slurry conveying pipeline 19 for grouting operation, and the feeding box 18 does not rotate synchronously with the drill rod 6 and the slurry conveying pipeline 19, so as to ensure the stability of the conveying pipe 17, and the cement slurry directly enters the slurry conveying pipeline 19 from the feeding box 18 through the opening on the slurry conveying pipeline 19 for grouting;
[0045] Specifically, when the building concrete mixing pile is used, first, the grouting vehicle 1 is transported to the designated position, and then the controller 21 is used to start the motor 4, the air pump 2 and the pressure pump 16. The motor 4 drives the transmission disc 5 to rotate, thereby driving the slurry conveying pipeline 19 to rotate, and further driving the drill rod 6 and the mixing head 8 to rotate. The helical blade one 7 and the helical blade two 9 rotate in opposite directions, thereby cutting and mixing the soil from different directions. The air pump 2 makes the telescopic column extend and retract, thereby driving the bearing table 3, the motor 4 and the like to move downward, so that the drill rod 6 and the mixing head 8 can mix and cut the soil at different depths. The pressure pump 16 sends the cement slurry in the temporary storage cylinder 15 to the slurry conveying pipeline 19 through the conveying pipe 17 and the feeding box 18 for grouting, so that the soil and the slurry are fully mixed. When the set depth is reached, the motor 4 and the air pump 2 are started in reverse, the drill rod 6 is rotated in reverse and slowly lifted, the slurry is continuously conveyed during this period, and the drill rod 6 is finally completely lifted out of the ground, thereby forming a dense concrete mixing pile.
[0046] Reference Figures 2 to 4 The dismounting and assembling assembly includes a mounting ring one 10, the inner wall of the mounting ring one 10 is fixedly connected to the outer wall of the bottom of the drill rod 6, and the mounting ring one 10 is used to provide an additional butt joint structure base for the drill rod 6. The outer wall of the top of the mixing head 8 is fixedly connected with a mounting ring two 11, and the mounting ring two 11 is used in cooperation with the mounting ring one 10 to conveniently assemble the mixing head 8 and the drill rod 6, and to ensure good transmission between the mixing head 8 and the drill rod 6, so that the mixing head 8 and the drill rod 6 can stably and synchronously rotate. The bottom of the mounting ring one 10 is detachably connected to the top of the mounting ring two 11 through a screw 12, thereby providing a prestress for the connection between the mixing head 8 and the drill rod 6. The top of the mixing head 8 is fixedly connected with a threaded ring 13, and the outer wall of the threaded ring 13 is threadedly connected to the inner wall of the bottom of the drill rod 6. In this way, the threaded ring 13 is rotated by rotating the mixing head 8, so that the threaded ring 13 is preliminarily butt jointed with the drill rod 6, and cooperates with the external screw 12 to form a double-connection structure, thereby firmly connecting the drill rod 6 and the mixing head 8.
[0047] Specifically, when the mixing head 8 is replaced and repaired, the screw 12 on the mounting ring is first removed, and then the mixing head 8 is rotated to relatively rotate with the drill rod 6, and the two are separated by the threaded ring 13. Then, the new or repaired mixing head 8 is rotated and inserted into the bottom of the drill rod 6, and the screw 12 is screwed to connect the mounting ring one 10 and the mounting ring two 11 to form a double-connection, thereby ensuring the stability of the synchronous movement of the mixing head 8 and the drill rod 6, and realizing the quick dismounting, replacing and repairing of the mixing head 8.
[0048] Working principle: in use, by transporting the grouting vehicle 1 to the designated position, the controller 21 controls the motor 4, air pump 2, pressure pump 16 to start at the same time, the motor 4 starts to drive the transmission disc 5 to rotate to drive the slurry pipeline 19 to rotate, the slurry pipeline 19 rotates to drive the outer drill rod 6 to rotate, the rotary motion of the drill rod 6 drives the stirring head 8 to rotate synchronously, which drives the helical blade one 7 and the helical blade two 9 to rotate, the helical blade one 7 and the helical blade two 9 rotate to cut and mix the soil, and because the setting direction of the helical blade one 7 and the helical blade two 9 is opposite, the soil is mixed from different directions, at the same time, the air pump 2 starts to make the telescopic column at the bottom of the air pump 2 extend downward to drive the bearing table 3 and the motor 4 to move downward synchronously, which drives the drill rod 6 and the stirring head 8 to move downward during rotation to mix and cut the soil layer at different depths, at the same time, the pressure pump 16 starts to make the cement slurry enter the feeding box 18 from the temporary storage cylinder 15 through the conveying pipe 17, and then transported to the slurry pipeline 19 for grouting operation, so that the soil and the cement slurry are fully mixed by the helical blade one 7 and the helical blade two 9, when reaching the set depth, the motor 4 and the air pump 2 are started in reverse to make the drill rod 6 rotate in reverse and slowly lift, at this time, the slurry is continuously transported until it completely exits the ground to form a dense concrete mixing pile.
[0049] When the stirring head 8 is replaced and repaired, the screw 12 can be removed from the mounting ring, the stirring head 8 is rotated to make the stirring head 8 rotate relative to the drill rod 6, so that the stirring head 8 can be separated from the drill rod 6 through the threaded ring 13, and the new or repaired stirring head 8 is rotated and inserted into the bottom of the drill rod 6, and the screw 12 is screwed into the mounting ring one 10 and the mounting ring two 11 to realize double connection, so that the synchronous motion between the stirring head 8 and the drill rod 6 remains stable, and the stirring head 8 can be quickly disassembled, replaced and repaired.
[0050] Finally, it should be pointed out that: the above only describes the preferred embodiments of the present application, and is not used to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application should be included in the protection scope of the present application.
Claims
1. A building concrete mixing pile comprising a grouting vehicle (1), characterized in that: The top of the grouting vehicle (1) is fixedly connected with a power mechanism, the output end of the power mechanism is fixedly connected with a slurry conveying pipeline (19), the outer wall of the slurry conveying pipeline (19) is fixedly connected with a stirring mechanism, the inner wall of the grouting vehicle (1) is fixedly connected with a partition plate (20), the top of the partition plate (20) is fixedly connected with a grouting mechanism, and the outside of the grouting vehicle (1) is provided with a controller (21). The stirring mechanism comprises a drill rod (6), the inner wall of the drill rod (6) is fixedly connected to the outer wall of the slurry conveying pipeline (19), the outer wall of the drill rod (6) is fixedly connected with a spiral blade one (7), the bottom of the drill rod (6) is detachably connected with a stirring head (8), the outer wall of the stirring head (8) is fixedly connected with a spiral blade two (9), and the bottom outer wall of the drill rod (6) is fixedly connected with a dismounting assembly.
2. A construction concrete mixing pile according to claim 1, characterized in that: The dismounting assembly comprises a mounting ring one (10), the inner wall of the mounting ring one (10) is fixedly connected to the bottom outer wall of the drill rod (6), the top outer wall of the stirring head (8) is fixedly connected with a mounting ring two (11), and the top of the stirring head (8) is fixedly connected with a threaded ring (13).
3. A construction concrete mixing pile according to claim 1, characterized in that: The power mechanism comprises an air pump (2), the bottom of the air pump (2) is fixedly connected to the top of the grouting vehicle (1), the output end of the air pump (2) is fixedly connected with a bearing table (3) through an extension column, the inner wall of the bearing table (3) is fixedly connected with a motor (4), the output end of the motor (4) is fixedly connected with a transmission disc (5), and the bottom of the transmission disc (5) is fixedly connected to the top of the slurry conveying pipeline (19).
4. The construction concrete mixing pile according to claim 1, characterized in that: The grouting mechanism comprises a temporary storage cylinder (15), the bottom of the temporary storage cylinder (15) is fixedly connected to the top of the partition plate (20), the bottom inner wall of the temporary storage cylinder (15) is fixedly connected with a pressure pump (16), the output end of the pressure pump (16) is fixedly connected with a conveying pipe (17), and the other end of the conveying pipe (17) is fixedly connected with a feeding box (18).
5. A construction concrete mixing pile according to claim 2, characterized in that: The outer wall of the threaded ring (13) is threadedly connected to the bottom inner wall of the drill rod (6), and the bottom of the mounting ring one (10) is detachably connected to the top of the mounting ring two (11) through screws (12).
6. A construction concrete mixing pile according to claim 4, characterized in that: The top of the grouting vehicle (1) is provided with a feeding port (14), and the outer diameter of the feeding port (14) is matched with the top opening outer diameter of the temporary storage cylinder (15).
7. A construction concrete mixing pile according to claim 4, characterized in that: The outer wall of the conveying pipe (17) is fixedly connected to the inner wall of the partition plate (20), and the other end of the conveying pipe (17) is fixedly connected with a sealing ring.
8. A construction concrete mixing pile according to claim 4, characterized in that: The inner wall of the feeding box (18) is rotatably connected to the outer wall of the slurry conveying pipeline (19), and the bottom of the feeding box (18) is rotatably connected to the top of the drill rod (6).