Three-shaft mixing pile construction equipment

Abstract

The utility model discloses three-shaft mixing pile construction equipment which comprises a fixing frame, the top of the fixing frame is fixedly connected with a support, a motor is installed in the center of the top of the support, a first rotating shaft is installed at the output end of the motor, a first drill rod is fixedly connected to the bottom end of the first rotating shaft, and second drill rods are arranged on the two sides of the first drill rod. The top end of the first drill rod is fixedly connected with a first rotating shaft, the top end of the second drill rod is fixedly connected with a second rotating shaft, drill bits are installed at the bottom end of the first drill rod and the bottom end of the second drill rod, three sets of grouting holes are formed in the rear end face of the fixing frame, three grouting pipes are installed on the rear side of the fixing frame, and a pipe body of each grouting pipe is fixedly connected with a plurality of flow dividing pipes. According to the utility model, the drill bit is convenient to clean and maintain, the drill bit can be independently replaced when having a fault, the three drill rods can be simultaneously driven to rotate by only one motor, the energy consumption and the operation cost are low, and cement grout can be uniformly dispersed in a soil body and fully mixed and solidified with the soil body.

Description

Technical Field

[0001] This utility model belongs to the field of construction equipment technology, and in particular relates to a three-axis mixing pile construction equipment. Background Technology

[0002] Triaxial mixing piles are a foundation reinforcement and soil improvement technology used to stabilize weak foundations and improve their bearing capacity. The basic principle is to use multi-axis (usually triaxial) mixing heads to forcibly mix the curing agent (such as cement grout) with the foundation soil to form a continuous reinforced column, thereby improving the strength and stability of the foundation.

[0003] Currently, there are some triaxial mixing pile equipment on the market. For example, a triaxial mixing pile that prevents soil clod adhesion is disclosed on the China Patent Network. Its announcement number is CN218911379U. This triaxial mixing pile equipment can prevent soil clod adhesion and cause foundation pit blockage. However, there are some defects and shortcomings that need to be improved: (1) Due to the structural design of some existing triaxial mixing pile equipment, the drill bit is often fixed on the drill rod and is difficult to disassemble. This makes it inconvenient to clean and maintain the drill bit. It is also difficult to replace the drill bit when it fails. (2) Some existing triaxial mixing pile equipment is generally driven by motors and other equipment. The rotating drill rod is used to mix and break up the soil. However, for a three-axis mixing pile equipment, since it has three drill rods, each drill rod often needs to be equipped with a dedicated motor, which results in a large energy consumption for the entire equipment. This not only increases the operating cost of the equipment, but also increases energy consumption, which is not conducive to energy conservation and environmental protection. (3) In the grouting process of some existing three-axis mixing pile equipment, after the cement grout enters the deep soil, it is often difficult to disperse evenly in the soil. The grout may be excessive or insufficient in some places, which will result in the grout not being able to mix and solidify fully with the soil, thus causing the foundation reinforcement effect to be unsatisfactory. Therefore, in view of the above problems, the three-axis mixing pile construction equipment provided by this utility model is of great significance. Utility Model Content

[0004] This invention provides a triaxial mixing pile construction device. The drill bit is fixed to the bottom of the first and second drill rods through the cooperation of studs, mounting holes, and nuts. The drill bit can be removed from the first and second drill rods at any time by unscrewing the nuts for cleaning and maintenance, and can also be replaced individually if it malfunctions. A single motor can simultaneously drive the first drill rod and the two second drill rods on both sides to rotate, eliminating the need for a separate motor for each drill rod, thus significantly reducing energy consumption and operating costs, promoting energy conservation and environmental protection. Cement slurry can be introduced into various branch pipes through grouting pipes, and then discharged along the grouting holes through these branch pipes. During the drilling and mixing process, the cement slurry can be injected into the soil from different heights, ensuring uniform dispersion and thorough mixing and solidification. This effectively avoids excessive or insufficient slurry in certain areas, which could affect the foundation reinforcement effect. In summary, this invention solves the problems in the background technology.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model discloses a triaxial mixing pile construction device, including a fixed frame. Three drill holes are provided at the top and bottom of the fixed frame. A bracket is fixedly connected to the top of the fixed frame. Three through holes are provided at the top of the bracket. A motor is installed at the center of the top of the bracket. A first rotating shaft is installed at the output end of the motor. A first gear is fixedly connected to the shaft of the first rotating shaft. The bottom end of the first rotating shaft passes through the through holes and is fixedly connected to a first drill rod. The first drill rod passes through the drill holes at the top and bottom of the fixed frame, and second drill rods are provided on both sides of the first drill rod. The second drill rod passes through the drill holes at the top and bottom of the fixing frame, and a second rotating shaft is fixedly connected to its top. A second gear is fixedly connected to the shaft of the second rotating shaft, and a pair of limiting blocks are fixedly connected to the top shaft of the second rotating shaft through the through hole. The first drill rod and the second drill rod are hollow inside, and both of their rods are provided with spiral blades. Drill bits are installed at the bottom of both the first drill rod and the second drill rod. Three sets of grouting holes are opened on the rear end face of the fixing frame, and three grouting pipes are installed on the rear side of the fixing frame. Several branch pipes are fixedly connected to the body of each grouting pipe.

[0007] Furthermore, both the first drill rod and the second drill rod have several mounting holes at their bottom edges, and several studs are fixedly connected to the top edge of the drill bit. The number of studs is the same as the number of mounting holes, and their diameter is equal to the diameter of the mounting holes. The center of each stud corresponds one-to-one with the center of each mounting hole, and a nut is threaded onto each stud to cooperate with it.

[0008] Furthermore, a protrusion is fixedly connected to the center of the top of the drill bit. The cross-section of the protrusion is circular, and its diameter is equal to the inner diameter of the first drill rod and the second drill rod.

[0009] Furthermore, the first gear is at the same height as the second gears on both sides, and the first gear meshes with the second gears on both sides respectively.

[0010] Furthermore, the limiting block has a circular cross-section with a diameter larger than that of the through hole, and the limiting block is respectively attached to the top and bottom of the through hole.

[0011] Furthermore, each group of grouting holes is linearly distributed at equal intervals along the height direction of the fixed frame, and the branch pipes on each grouting pipe are linearly distributed at equal intervals along the length direction of the grouting pipe. The number of branch pipes is the same as that of the grouting holes, their outer diameter is equal to that of the grouting holes, and the height of each branch pipe is flush with the height of each grouting hole.

[0012] The present invention has the following advantages over the prior art:

[0013] (1) In the present invention, a three-axis mixing pile construction equipment is used to fix the drill bit at the bottom of the first drill rod and the second drill rod by the mutual cooperation between the stud, the mounting hole and the nut. The drill bit can be removed from the first drill rod and the second drill rod at any time as needed by unscrewing the nut, so as to clean and maintain the drill bit. The drill bit can also be replaced separately when it malfunctions.

[0014] (2) When the three-axis mixing pile construction equipment of this utility model is used, the first drill rod and the second drill rods on both sides can be driven to rotate simultaneously by one motor, without the need to configure a special motor for each drill rod, thereby greatly reducing the energy consumption and operating cost of the entire equipment, which is conducive to energy conservation and environmental protection;

[0015] (3) When using the three-axis mixing pile construction equipment of this utility model, cement slurry can be introduced into each branch pipe through the grouting pipe, and cement slurry can be discharged along each grouting hole through each branch pipe. At this time, during the drilling and mixing process, cement slurry can be injected into the soil from different heights to ensure that the cement slurry is evenly dispersed in the soil and fully mixed and solidified with the soil, thereby effectively avoiding the local excessive or insufficient slurry from affecting the reinforcement effect of the foundation.

[0016] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a front structural diagram of a triaxial mixing pile construction device according to the present invention;

[0019] Figure 2 This is a schematic diagram of the rear structure of a triaxial mixing pile construction device according to the present invention;

[0020] Figure 3 This is a schematic diagram of the structure of the fixing frame and the support in this utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the first drill rod and the second drill rod in this utility model;

[0022] Figure 5 This is a schematic diagram of the drill bit structure in this utility model;

[0023] Figure 6 This is a schematic diagram of the grouting pipe in this utility model.

[0024] The attached diagram lists the components represented by each number as follows:

[0025] 1. Fixing frame; 2. Drill hole; 3. Bracket; 4. Through hole; 5. Motor; 6. First rotating shaft; 7. First gear; 8. First drill rod; 9. Second drill rod; 10. Second rotating shaft; 11. Second gear; 12. Limiting block; 13. Spiral blade; 14. Drill bit; 15. Grouting hole; 16. Grouting pipe; 17. Diverter pipe; 18. Mounting hole; 19. Stud; 20. Nut; 21. Protrusion. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0027] In the description of this utility model, it should be understood that the terms "relative", "one end", "inner", "lateral", "end", "both ends", "both sides", "front", "one end face", "the other end face", etc., which indicate orientation or positional relationship, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0028] Please see Figure 1-6 As shown, this utility model discloses a triaxial mixing pile construction device, including a fixed frame 1. The fixed frame 1 has three drill holes 2 at both its top and bottom. A support 3 is fixedly connected to the top of the fixed frame 1. The support 3 has three through holes 4 at its top. A motor 5 is installed at the center of the top of the support 3. A first rotating shaft 6 is installed at the output end of the motor 5. A first gear 7 is fixedly connected to the shaft of the first rotating shaft 6. The bottom end of the first rotating shaft 6 passes through the through holes 4 and is fixedly connected to a first drill rod 8. The first drill rod 8 passes through the drill holes 2 at the top and bottom of the fixed frame 1, and second drill rods 9 are provided on both sides of the first drill rod 8. The drill holes 2 pass through the top and bottom of the fixed frame 1 respectively. The top of the drill hole 2 is fixedly connected to the second rotating shaft 10. The shaft of the second rotating shaft 10 is fixedly connected to the second gear 11. The top shaft of the second rotating shaft 10 passes through the through hole 4 and is fixedly connected to a pair of limiting blocks 12. The first drill rod 8 and the second drill rod 9 are hollow inside. The shaft is provided with spiral blades 13. The bottom of the first drill rod 8 and the second drill rod 9 are both equipped with drill bits 14. The rear end face of the fixed frame 1 is provided with three sets of grouting holes 15. The rear side of the fixed frame 1 is provided with three grouting pipes 16. The shaft of each grouting pipe 16 is fixedly connected to several diversion pipes 17.

[0029] The first drill rod 8 and the second drill rod 9 each have several mounting holes 18 at their bottom edges. The top edge of the drill bit 14 is fixedly connected to several studs 19. The number of studs 19 is the same as the number of mounting holes 18, and their diameter is equal to the diameter of the mounting holes 18. The center of each stud 19 corresponds one-to-one with the center of each mounting hole 18. Nuts 20 are threaded onto each stud 19. Each stud 19 can be aligned and passed through the corresponding mounting hole 18. The nuts 20 are then threaded onto each stud 19 and tightened. The drill bit 14 can be fixedly installed at the bottom of the first drill rod 8 and the second drill rod 9 through the mutual cooperation between the studs 19, the mounting holes 18, and the nuts 20. By unscrewing the nuts 20, the drill bit 14 can be removed from the first drill rod 8 and the second drill rod 9 as needed for cleaning and maintenance. The drill bit 14 can also be replaced individually when it malfunctions.

[0030] The drill bit 14 has a protrusion 21 fixedly connected to the center of its top. The cross-section of the protrusion 21 is circular, and its diameter is equal to the inner diameter of the first drill rod 8 and the second drill rod 9. When the drill bit 14 is installed, the protrusion 21 can be inserted into and fit against the inner wall of the first drill rod 8 and the second drill rod 9 to play a limiting role, thereby preventing the drill bit 14 from loosening during drilling and rotation.

[0031] The first gear 7 is flush with the second gears 11 on both sides, and the first gear 7 meshes with the second gears 11 on both sides. The drive motor 5 can drive the first rotating shaft 6 to rotate together with the first gear 7 and the first drill rod 8. When the first gear 7 rotates, it can drive the second gear 11 to rotate through their mutual meshing. When the second gear 11 rotates, it can drive the second rotating shaft 10 to rotate together with the second drill rod 9. Thus, only one motor 5 is needed to drive the first drill rod 8 and the second drill rods 9 on both sides to rotate at the same time, without the need to configure a separate motor 5 for each drill rod. This greatly reduces the energy consumption and operating cost of the entire equipment, which is conducive to energy conservation and environmental protection.

[0032] The limiting block 12 has a circular cross-section with a diameter larger than that of the through hole 4. The limiting block 12 is attached to the top and bottom of the through hole 4 respectively. The limiting block 12 can limit and fix the second drill rod 9 to prevent it from shaking up and down during rotation.

[0033] In this system, each set of grouting holes 15 is linearly distributed at equal intervals along the height direction of the fixed frame 1, and each grouting pipe 16 has a branch pipe 17 linearly distributed at equal intervals along the length direction of the grouting pipe 16. The number of branch pipes 17 is the same as that of the grouting holes 15, and their outer diameter is equal to that of the grouting holes 15. The height of each branch pipe 17 is the same as the height of each grouting hole 15. Each branch pipe 17 can be aligned and inserted into the corresponding grouting hole 15. The grouting pipe 16 is connected to an external grouting system, which can guide cement grout into each branch pipe 17. Through each branch pipe 17, the cement grout can be discharged along each grouting hole 15. At this time, during the drilling and mixing process, the cement grout can be injected into the soil from different heights to ensure that the cement grout is evenly dispersed in the soil and fully mixed and solidified with the soil, thereby effectively avoiding the impact of excessive or insufficient grout in some areas on the reinforcement effect of the foundation.

[0034] The circuits, electronic components, and chip modules involved in this utility model are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this utility model does not involve any improvement to the software and methods.

[0035] All standard parts used in the application documents can be purchased from the market. All components in this application document can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. The electrical components mentioned in this document are all connected to the external main controller and 220V mains power. The main controller is a conventional known device that can play a control role.

[0036] The working principle of this utility model is as follows:

[0037] In use, this invention drives a motor 5 to rotate the first shaft 6 along with the first gear 7 and the first drill rod 8. When the first gear 7 rotates, it drives the second gear 11 to rotate through meshing. When the second gear 11 rotates, it drives the second shaft 10 along with the second drill rod 9 to rotate. When the first drill rod 8 and the second drill rod 9 rotate, the spiral blades 13 and the drill bit 14 can be used to stir the soil. The entire drilling process only requires one motor 5 to drive the first drill rod 8 and the second drill rods 9 on both sides to rotate simultaneously, eliminating the need for a separate motor 5 for each drill rod. This greatly reduces the energy consumption and operating time of the entire equipment. The cost is reduced, which is beneficial to energy conservation and environmental protection. During the drilling process, cement slurry can be introduced into each branch pipe 17 through the grouting pipe 16. The cement slurry can then be discharged along each grouting hole 15 through each branch pipe 17. At this time, the cement slurry can be injected into the soil from different heights to ensure that the cement slurry is evenly dispersed in the soil and fully mixed and solidified with the soil. This effectively avoids the problem of excessive or insufficient slurry in some areas affecting the reinforcement effect of the foundation. After the drill bit 14 has been used for a long time, the drill bit 14 can be removed from the first drill rod 8 and the second drill rod 9 as needed by unscrewing the nut 20 for cleaning and maintenance. The drill bit 14 can also be replaced individually when it malfunctions.

[0038] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A triaxial mixing pile construction device, characterized in that, The device includes a mounting frame with three drilled holes at both its top and bottom. A bracket is fixedly connected to the top of the mounting frame, and the top of the bracket has three through holes. A motor is mounted at the center of the top of the bracket, and a first rotating shaft is mounted on the output end of the motor. A first gear is fixedly connected to the shaft of the first rotating shaft, and the bottom end of the first rotating shaft passes through the through holes and is fixedly connected to a first drill rod. The first drill rod passes through the drilled holes at the top and bottom of the mounting frame, and second drill rods are provided on both sides of the first drill rod. Through the drill holes at the top and bottom of the fixed frame, a second rotating shaft is fixedly connected to the top. A second gear is fixedly connected to the shaft of the second rotating shaft, and a pair of limiting blocks are fixedly connected to the top shaft of the second rotating shaft through the through hole. The first drill rod and the second drill rod have hollow internal structures, and their rods are equipped with spiral blades. Drill bits are installed at the bottom of the first drill rod and the second drill rod. Three sets of grouting holes are opened on the rear end face of the fixed frame, and three grouting pipes are installed on the rear side of the fixed frame. Several diversion pipes are fixedly connected to the body of each grouting pipe.

2. The triaxial mixing pile construction equipment according to claim 1, characterized in that, The first drill rod and the second drill rod each have several mounting holes at their bottom edges. Several studs are fixedly connected to the top edge of the drill bit. The number of studs is the same as the number of mounting holes, and their diameter is equal to the diameter of the mounting holes. The center of each stud corresponds one-to-one with the center of each mounting hole. A nut is threaded onto each stud to cooperate with it.

3. The triaxial mixing pile construction equipment according to claim 1, characterized in that, A protrusion is fixedly connected to the center of the top of the drill bit. The cross-section of the protrusion is circular, and its diameter is equal to the inner diameter of the first drill rod and the second drill rod.

4. The triaxial mixing pile construction equipment according to claim 1, characterized in that, The first gear is at the same height as the second gears on both sides, and the first gear meshes with the second gears on both sides respectively.

5. The triaxial mixing pile construction equipment according to claim 1, characterized in that, The limiting block has a circular cross-section, the diameter of which is larger than the diameter of the through hole, and the limiting block is respectively attached to the top and bottom of the through hole.

6. The triaxial mixing pile construction equipment according to claim 1, characterized in that, Each set of grouting holes is linearly distributed at equal intervals along the height direction of the fixed frame, and the branch pipes on each grouting pipe are linearly distributed at equal intervals along the length direction of the grouting pipe. The number of branch pipes is the same as that of the grouting holes, their outer diameter is equal to that of the grouting holes, and the height of each branch pipe is flush with the height of each grouting hole.

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