Prefabricated building structure combined pile foundation node structure and construction method

Abstract

The application discloses a combined pile foundation node structure of a fabricated building structure and a construction method, and belongs to the technical field of pile foundation nodes. The combined pile foundation node structure of the fabricated building structure comprises: a mounting seat used for connecting and fixing a pile cap; a fixing cone rotatably mounted at the bottom of the mounting seat and provided with spiral blades around the outside thereof; and a driving mechanism connected with the fixing cone through a one-way transmission assembly and used for driving the fixing cone to rotate in one direction to drill into the soil. The technical scheme can effectively improve the construction efficiency of the pile foundation node and improve the fixing firmness of the pile foundation node and the soil.

Description

Technical Field

[0001] This invention belongs to the field of pile foundation node technology, and in particular relates to a prefabricated building structure combined pile foundation node structure and construction method. Background Technology

[0002] Prefabricated buildings refer to buildings where a large amount of on-site work in traditional construction methods is transferred to factories. Building components and accessories (such as floor slabs, wall panels, stairs, balconies, etc.) are processed and manufactured in factories, then transported to the construction site, and finally assembled and installed on-site using reliable connection methods.

[0003] A deep foundation consisting of piles and pile caps connecting the pile tops, or a single-pile foundation consisting of columns connected to the piles, is simply called a pile foundation. In building construction, the construction of pile foundations is the first step. In prefabricated building construction, pile foundations are also considered prefabricated components. During construction, the pile foundations are fixed to various pile foundation nodes, and then the pile caps are built using the pile foundations. Finally, the prefabricated building construction is completed using various prefabricated components.

[0004] As with any building, the higher the stability, the better. And the more stable the pile foundation, the better it can guarantee the stability of prefabricated buildings. However, in current technology, most pile foundations are still made of precast and cast concrete, which reduces the overall efficiency of prefabricated building construction, and the stability of its connection with the ground also needs to be further improved. Summary of the Invention

[0005] 1. The problem to be solved

[0006] The purpose of this invention is to provide a prefabricated building structure with a combined pile foundation node structure and a construction method, thereby solving the problems of relatively low construction efficiency and the need to further improve the connection stability between the pile foundation node and the soil in the existing prefabricated building structure with combined pile foundation node structure.

[0007] 2. Technical Solution

[0008] To solve the above problems, the technical solution adopted by the present invention is as follows:

[0009] The present invention provides a prefabricated building structure with a combined pile foundation node structure, comprising:

[0010] Mounting bracket, used to connect and fix the support platform;

[0011] A fixed cone, rotatably mounted on the bottom of a mounting base, and surrounded by spiral blades; and

[0012] The drive mechanism is connected to the fixed cone drive via a one-way transmission assembly, and is used to drive the fixed cone to rotate in one direction to drill into the soil.

[0013] The fixed cone is driven to rotate in one direction by the drive mechanism, so that the fixed cone can be drilled into the soil to fix the pile foundation node to the soil. The surface of the fixed cone is equipped with spiral blades, which not only facilitates the fixed cone to be drilled into the soil, but also increases the contact area between the fixed cone and the soil, thereby improving the connection stability between the fixed cone and the soil.

[0014] Furthermore, a drive block is rotatably mounted on the top of the mounting base, and a drive mechanism is connected to the drive block to drive the drive block to rotate; the upper end of the fixed cone passes through the mounting base and is connected to the drive block through a one-way transmission assembly.

[0015] Furthermore, the unidirectional transmission assembly includes:

[0016] The turntable is fixedly installed on the bottom of the drive block, and its bottom is machined with several grooves that are evenly spaced.

[0017] The protrusions are evenly spaced on the inner wall of the fixed cone, and their number and distribution match the grooves; and

[0018] A transmission plate, one end of which is rotatably mounted on the inner wall of one side of the groove, and the other end of which extends between two adjacent protrusions. The transmission plate is inclined along the groove and can only rotate between the side walls of the groove. One side of the protrusion is correspondingly machined into an inclined surface that matches the transmission plate.

[0019] Because the transmission plate is inclined and rotatably mounted on one side of the inner wall of the groove, it can only rotate in one direction relative to the inner wall of the groove. That is, when the drive turntable rotates in the forward direction, the transmission plate cannot rotate towards the other side of the groove due to the restriction of the groove side wall. Under the action of the protrusion, the transmission plate will drive the fixed cone to rotate together, thus causing the fixed cone to drill into the soil. However, when the drive turntable rotates in the reverse direction, the transmission plate can rotate within the groove under the action of the inclined surface on the other side of the protrusion, and therefore cannot drive the fixed cone to rotate synchronously.

[0020] Furthermore, a support component is also provided, which includes:

[0021] The insert plate is located inside the cavity of the fixed cone and can be slidably and telescopically installed in the through hole on the side wall of the fixed cone;

[0022] A lead screw is rotatably mounted within the cavity of a fixed cone, and its top is fixedly mounted to the bottom of a turntable; and

[0023] The connecting block is threaded with the lead screw and is rotatably connected to the insert plate via a connecting rod.

[0024] The support components help to further improve the stability of the connection between the fixed cone and the soil. Specifically, the drive screw rotates, the connecting block can move up and down along the screw, and the insert plate can move along the through hole on the side wall of the fixed cone under the push of the connecting rod. When the insert plate extends out of the through hole, it can be inserted into the soil.

[0025] Furthermore, the drive block has a polygonal structure, and the drive mechanism includes a connecting seat. The center of the connecting seat is machined with a polygonal groove that matches the shape of the drive block, and a handle is rotatably mounted on the top of the connecting seat. By driving the connecting seat to rotate through the handle, the drive block can be rotated by the cooperation between the drive block and the polygonal groove in the center of the connecting seat, making the operation relatively simple.

[0026] Furthermore, the mounting base has multiple auxiliary fixing components evenly spaced around the outer periphery of the fixed cone. Each auxiliary fixing component includes a connecting shaft rotatably mounted on the mounting base and a spiral cone fixedly mounted at the bottom of the connecting shaft. The connecting shaft drives the spiral cone to rotate, allowing it to quickly penetrate below the ground surface, while the spiral structure increases the friction between the spiral cone and the soil.

[0027] Furthermore, the rotation drive mechanism of the auxiliary fixing component includes:

[0028] The first gear is rotatably mounted on the top of the mounting base, and each connecting shaft is fixedly connected to the corresponding first gear;

[0029] The second gear is rotatably mounted on the top of the mounting base, with a transmission groove machined in its center and located outside the drive block; each of the first gears meshes with the second gear; and

[0030] The transmission block can be slidably mounted on the outside of the connecting seat and engages with the transmission groove to drive the second gear to rotate.

[0031] Furthermore, the outer side of the mounting base is provided with a sealing cover, the top inner wall of the sealing cover is provided with a partition, the top of the partition is fitted with a splicing seat, and the splicing seat is machined with splicing holes that are matched with the size of the support for the support to pass through and for the installation of the support. The inner wall of the splicing hole is provided with a rubber ring; a rubber gasket is also provided between the top of the mounting base and the partition.

[0032] The construction method of the prefabricated building structure combined pile foundation node structure of the present invention adopts the above-mentioned structure of the present invention. The fixed cone is driven to rotate in the forward direction by the driving mechanism and the one-way transmission mechanism, so that the spiral blades on the surface of the fixed cone are drilled into the soil. Then the pile cap is fixedly installed on the mounting base, thereby realizing the connection of the pile foundation.

[0033] Furthermore, the specific process includes the following:

[0034] Step 1: Fixing the mounting base

[0035] The drive block rotates in the forward direction, at which time the transmission plate cannot rotate. With the cooperation of the transmission plate and the protrusion, the fixed cone is driven to rotate in the forward direction, thus achieving the soil drilling effect of the fixed cone.

[0036] The drive block rotates in the opposite direction. At this time, under the resistance of the protrusion, the transmission plate rotates in the groove, while the fixed cone remains stationary. The turntable drives the lead screw to rotate in the opposite direction, thereby pushing the insert plate along the through hole under the action of the connecting block and the connecting rod, so that the insert plate is inserted into the soil.

[0037] Step 2: Installation of the foundation

[0038] After the mounting base is fixed, the foundation is passed through the splicing hole on the splicing seat. The deformation of the rubber ring can achieve the initial fixation of the foundation and the splicing seat. The splicing seat is placed on the partition of the sealing cover, and the foundation is rotated to make the splicing seat snap into the partition, which achieves the initial fixation between the foundation and the mounting base. Finally, the gap between the mounting base and the foundation is filled with concrete to complete the final fixation of the foundation.

[0039] 3. Beneficial effects

[0040] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0041] (1) In this invention, the fixed cone is driven to rotate by a driving mechanism. Since the fixed cone has spiral blades on its outside, it is easier for the fixed cone to drill into the ground, which is beneficial to improving drilling efficiency and pile foundation node construction efficiency. On the other hand, there is a large contact area between the spiral blades and the soil, which further ensures the stability of the fixed cone. In addition, in this invention, the driving mechanism is connected to the fixed cone through a one-way transmission component. Under the action of the one-way transmission component, the fixed cone can only rotate in one direction, which is beneficial to further improve the fixation of the pile foundation node to the soil and prevent the fixed cone from reversing, which would affect the connection between the pile foundation and the soil.

[0042] (2) The present invention further provides a support component on the fixed cone. When the fixed cone is drilled into the soil, the insert plate is moved to the outside of the through hole on the side wall of the fixed cone and inserted into the soil by rotating the screw, which is conducive to further improving the connection stability between the fixed cone and the soil. The mounting base is provided with multiple auxiliary fixing components evenly spaced on the outer periphery of the fixed cone. The setting of the auxiliary fixing components is conducive to further improving the connection strength and stability between the entire pile foundation and the soil.

[0043] (3) In this invention, a drive block is rotatably mounted on the top of the mounting base. The drive block is driven to rotate in the forward direction by the drive mechanism, which can drive the fixed cone to rotate in the forward direction and drill into the soil. When the drive mechanism drives the drive block to rotate in the reverse direction, the fixed cone remains stationary. At this time, the drive block drives the lead screw to rotate in the reverse direction, so that the insert block is inserted into the soil. The drive mechanism of this invention has a simple structure and is easy to operate. At the same time, the drilling work of the fixed cone and the insert plate can be realized by the forward and reverse rotation of the drive block.

[0044] (4) The rotation drive mechanism of the auxiliary fixing components in this invention includes a first gear and a second gear. Through the engagement of the transmission block and the second gear, the second gear can be directly driven to rotate via the transmission block. The second gear drives each of the first gears to rotate synchronously, thereby achieving synchronous drilling of each auxiliary fixing component. This invention can directly use the same drive mechanism to achieve the rotation of the fixed cone, the extension and sliding of the insert plate, and the rotational drilling control of the auxiliary fixing components. Attached Figure Description

[0045] Figure 1 This is a three-dimensional structural schematic diagram of the prefabricated building structure combined pile foundation node structure according to an embodiment of the present invention;

[0046] Figure 2 This is a structural schematic diagram of the prefabricated building structure combined pile foundation node structure from another perspective according to an embodiment of the present invention;

[0047] Figure 3 This is a schematic diagram of the assembly structure of the first gear and the second gear according to an embodiment of the present invention;

[0048] Figure 4 This is an exploded structural diagram of the connecting seat and transmission block according to an embodiment of the present invention;

[0049] Figure 5 This is a schematic diagram of the structure of the fixed cone according to an embodiment of the present invention;

[0050] Figure 6 This is a partial cross-sectional view of the fixed cone according to an embodiment of the present invention;

[0051] Figure 7 This is a schematic diagram of the assembly structure of the turntable and the fixed cone according to an embodiment of the present invention;

[0052] Figure 8 This is a schematic diagram of the structure of a one-way transmission assembly according to an embodiment of the present invention;

[0053] Figure 9 This is a schematic diagram of the assembly structure of the splicing base and the sealing cover according to an embodiment of the present invention;

[0054] Figure 10This is an exploded structural diagram of the splicing base and sealing cover according to an embodiment of the present invention.

[0055] Figure label:

[0056] 1. Mounting base; 2. Sealing cover; 3. Splicing base; 4. Rubber gasket; 5. First gear; 6. Second gear; 7. Transmission base; 8. Fixed base; 9. Handle; 10. Connecting shaft; 11. Spiral cone; 12. Fixed cone; 13. Spiral blade; 14. Transmission groove; 15. Drive block; 16. Connecting base; 17. Transmission block; 18. Damping slider; 19. Polygonal groove; 20. Through hole; 21. Lead screw; 22. Connecting block; 23. Connecting rod; 24. Insert plate; 25. Turntable; 26. Protrusion; 27. Groove; 28. Transmission plate; 29. ​​Rubber block; 30. Partition plate; 31. Snap-fit ​​interface; 32. Rubber ring. Detailed Implementation

[0057] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only some and preferred embodiments of the present invention, and not all embodiments.

[0058] The components of the embodiments of the invention described and shown in the accompanying drawings can typically be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0059] Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0060] Combination Figures 1-10 As shown, a prefabricated building structure combined pile foundation node structure of the present invention includes:

[0061] Mounting base 1 is used to connect and fix the support platform;

[0062] A fixed cone 12 is rotatably mounted on the bottom of the mounting base 1, and a spiral plate 13 is provided around its outer side;

[0063] The drive mechanism is connected to the fixed cone 12 via a one-way transmission assembly and is used to drive the fixed cone 12 to rotate in one direction to drill into the soil.

[0064] The fixed cone 12 is driven to rotate by a drive mechanism, thereby achieving a drilling effect through the spiral blades 13 on its surface. This facilitates the fixed cone 12's easy penetration into the ground, improving drilling efficiency and the construction efficiency of pile foundation nodes. Simultaneously, the large contact area between the spiral blades 13 and the soil further enhances the stability of the fixed cone 12 within the soil. The drive mechanism is connected to the fixed cone 12 via a unidirectional transmission assembly, ensuring that the fixed cone can only rotate in one direction. This further strengthens the connection between the fixed cone and the soil after drilling, preventing reverse rotation of the fixed cone from affecting the connection's stability.

[0065] In a preferred embodiment, the present invention can be further configured as follows: a drive block 15 is rotatably mounted on the top of the mounting base 1, and a drive mechanism is connected to the drive block 15 to drive the drive block 15 to rotate; the upper end of the fixed cone 12 passes through the mounting base 1 and is connected to the drive block 15 through a one-way transmission assembly.

[0066] Combination Figure 7 , Figure 8 As shown, the aforementioned one-way transmission assembly includes a turntable 25, protrusions 26, and a transmission plate 28. The turntable 25 is fixedly installed on the bottom of the drive block 15, and its bottom is machined with a number of evenly spaced grooves 27. The protrusions 26 are evenly spaced on the inner wall of the fixed cone 12, and their number and distribution position are matched with the grooves 27. The transmission plate 28 is inclined relative to the fixed cone. One end of it is rotatably installed on the inner wall of one side of the groove 27, and the other end extends between two adjacent protrusions 26. The transmission plate 28 can only rotate between the side walls of the groove 27 (that is, the transmission plate 28 can only rotate unidirectionally relative to the inner wall of the groove on its mounting side). Both sides of the protrusions 26 are designed as inclined surfaces, and the inclination of one side matches that of the transmission plate 28.

[0067] When the drive mechanism drives the drive block to rotate the turntable 25 in the forward direction (the direction in which the fixed cone rotates in the forward direction, i.e.) Figure 8 When rotating clockwise (in the groove), the transmission plate 28 cannot rotate counterclockwise within the groove due to the restriction of the groove sidewall. Therefore, it pushes the protrusion 26 to rotate clockwise, thus achieving the forward rotation of the fixed cone. When the turntable 25 rotates in the reverse direction (in the groove), Figure 8When rotating counterclockwise (in the direction of rotation), the protrusion 26 rotates within the groove 27 under the action of the inclined surface on the other side, thus preventing the fixed cone from rotating together and ensuring that the fixed cone can only rotate in the forward direction. The specific shape of the groove 27 is not limited in this invention, as long as it can achieve the purpose of unidirectionally pushing the protrusion to rotate. Furthermore, a rubber block 29 is provided on the inner wall of the groove 27 opposite to the mounting side of the transmission plate 28. The repositioning of the deformed rubber block 29 pushes the transmission plate 28 back to its original position, thereby preventing the transmission plate 28 from retracting into the groove 27 due to incorrect rotation direction and becoming unusable.

[0068] In a preferred embodiment, the present invention may be further configured to include a support component, combined with... Figure 5 , Figure 6 As shown, the support component includes:

[0069] The insert plate 24 is located in the inner cavity of the fixed cone 12 and can be slidably and telescopically installed in the through hole 20 on the side wall of the fixed cone 12. Its insertion end is preferably designed as a pointed structure to facilitate insertion into the soil.

[0070] The lead screw 21 is rotatably mounted in the inner cavity of the fixed cone 12; and

[0071] The connecting block 22 is threadedly engaged with the lead screw 21 and is rotatably connected to the insert plate 24 via the connecting rod 23.

[0072] During the rotation of the lead screw 21, the connecting block 22 is driven to rise through the threaded hole. As the connecting block 22 rises, the connecting rod 23 pushes the insert plate 24 along the through hole 20, causing the insert plate 24 to insert into the soil, thereby further increasing the stability of the connection between the fixed cone 12 and the soil. In a more preferred embodiment of the invention, the top of the lead screw 21 is fixedly installed at the bottom of the turntable 25. Therefore, when the drive block 15 rotates forward, it can drive the fixed cone to rotate, thus drilling into the soil; while when the drive block 15 rotates in the reverse direction, the fixed cone does not rotate. At this time, the turntable drives the lead screw 21 to rotate, thereby causing the insert plate 24 to insert into the soil. Therefore, the rotation of the fixed cone 12 and the movement of the insert plate can share a single drive mechanism, making the structure and operation relatively simple.

[0073] In a preferred embodiment, the present invention may be further configured as follows: Figure 1 , Figure 2As shown, the mounting base 1 has multiple auxiliary fixing components evenly spaced around the outer periphery of the fixed cone 12. Each auxiliary fixing component includes a connecting shaft 10 rotatably mounted on the mounting base 1 and a spiral cone 11 fixedly mounted to the bottom of the connecting shaft 10. The connecting shaft 10 drives the spiral cone 11 to rotate, causing it to quickly penetrate below the ground surface. The spiral structure increases the friction between the spiral cone 11 and the soil, thus completing the initial fixing of the mounting base 1. Preferably, there are four auxiliary fixing components.

[0074] In a preferred embodiment, the present invention may be further configured as follows: Figure 1 , Figure 4 As shown, the driving mechanism includes a connecting seat 16, and the driving block 15 has a polygonal structure. The bottom of the connecting seat 16 is machined with a polygonal groove 19 that matches the driving block 15, and a handle 9 is rotatably mounted on the top of the connecting seat 16. By rotating the handle 9, the driving block 15 can be pushed to rotate in both the forward and reverse directions through the connecting seat 16. Furthermore, the top of the connecting seat 16 is provided with a transmission seat 7, and a fixed seat 8 is fixedly mounted on the top of the transmission seat 7. The handle 9 is rotatably mounted on the fixed seat 8.

[0075] In a preferred embodiment, the present invention may be further configured as follows: Figure 3 As shown, a first gear 5 corresponding to each connecting shaft 10 is rotatably mounted on the top of the mounting base 1, and each connecting shaft 10 is fixedly connected to its corresponding first gear 5. A second gear 6 is provided on the top of the mounting base 1 outside the drive block 15, and each first gear 5 meshes with the second gear 6. A transmission groove 14 is machined in the center of the second gear 6. A transmission block 17 is slidably mounted on the outside of the connecting base 16. The shape of the transmission block 17 matches the transmission groove 14 and is used to drive the second gear 6 to rotate. Furthermore, the shape of the transmission block 17 and the transmission groove 14 are both polygonal structures, such as hexagons. Multiple damping sliders 18 are evenly spaced along the outer peripheral wall of the connecting base 16. A circular hole is opened on the top of the transmission block 17, and a sliding groove corresponding to the damping slider 18 is opened in the circular hole.

[0076] Through the cooperation of the damping slider 18 and the slide groove, the transmission block 17 descends along the surface of the connecting seat 16 and is placed into the transmission groove 14 of the second gear 6. Since the transmission block 17 is below the connecting seat 16 at this time, the connecting seat 16 and the polygonal block 15 do not contact each other. The handle 9 drives the fixed seat 8 to rotate, thereby driving the second gear 6 to rotate through the transmission seat 7, the transmission block 17, and the transmission groove 14. During the rotation of the second gear 6, each of the first gears 5 rotates. During the rotation of the first gears 5, the spiral cone 11 rotates through the connecting shaft 10. The transmission block 17 is slid to the top of the connecting seat 16, fixing the polygonal groove 19 and the polygonal block 15 on the connecting seat 16. The handle 9, the fixed seat 8, the transmission seat 7, and the connecting seat 16 can drive the polygonal block 15 to rotate, thereby realizing the rotation of the fixed cone 12 and the movement control of the insert plate.

[0077] It should be noted that the driving mechanism and the rotation driving mechanism of the auxiliary fixing component of the present invention can directly adopt existing driving structures, as long as they can drive rotation. However, when the above-mentioned driving mechanism is used, the rotation of the fixing cone 12, the movement of the insert plate, and the rotation of the auxiliary fixing component only need to share one set of driving mechanisms, and the structure and operation are relatively simple.

[0078] like Figure 9 , Figure 10 As shown, in a preferred embodiment of the present invention, the following configuration is provided: a sealing cover 2 is provided on the outer side of the mounting base 1, a partition 30 is provided on the top inner wall of the sealing cover 2, a splicing base 3 is fitted on the top of the partition 30, and a splicing hole is machined on the splicing base 3 for the support to pass through and which matches the size of the support for the installation of the support. A rubber ring 32 is provided on the inner wall of the splicing hole; a rubber gasket 4 is also provided between the top of the mounting base 1 and the partition 30.

[0079] After the mounting base 1 is fixed, the foundation is passed through the splicing hole on the splicing seat 3. The deformation of the rubber ring 32 is used to initially fix the foundation and the splicing seat 3. Then, the splicing seat 3 is placed on the partition plate 30, and the foundation is rotated to snap the splicing seat 3 onto the partition plate 30, thus achieving the initial fixation between the foundation and the mounting base 1. Finally, the gap between the mounting seat 1 and the foundation is filled with concrete to complete the final fixation of the foundation. Furthermore, the top of the partition plate 30 has multiple evenly spaced locking interfaces 31, preferably four, and the side wall of the splicing seat 3 has locking blocks corresponding to the locking interfaces 31.

[0080] The construction method of the prefabricated building structure combined pile foundation node structure of the present invention is as follows:

[0081] First, through the cooperation of the damping slider 18 and the slide groove, the transmission block 17 descends along the surface of the connecting seat 16 and is placed into the transmission groove 14 of the second gear 6. Since the transmission block 17 is below the connecting seat 16 at this time, the connecting seat 16 and the drive block 15 do not contact each other. The handle 9 drives the fixed seat 8 to rotate, and the transmission seat 7, transmission block 17 and transmission groove 14 drive the second gear 6 to rotate. During the rotation of the second gear 6, each first gear 5 is driven to rotate. During the rotation of the first gear 5, the connecting shaft 10 drives the spiral cone 11 to rotate. Through the rotation of the spiral cone 11, the spiral cone 11 quickly enters below the ground surface. The spiral structure can increase the friction between the spiral cone 11 and the ground to complete the initial fixing work of the mounting seat 1.

[0082] Next, slide the transmission block 17 above the connecting seat 16 to fix the polygonal groove 19 on the connecting seat 16 and the drive block 15. Drive the drive block 15 to rotate through the handle 9, the fixed seat 8, the transmission seat 7 and the connecting seat 16. During the rotation of the drive block 15, the turntable 25 is rotated. At this time, the turntable 25 drives the transmission plate 28 to rotate. The groove 27 restricts the transmission plate 28 from rotating in the groove 27. At this time, the transmission plate 28 drives the fixed cone 12 to rotate through the protrusion 26. The spiral blade 13 on the surface of the fixed cone 12 achieves the drilling effect, so that the fixed cone 12 can enter the ground more easily. There is a large contact area between the spiral blade 13 and the soil, thus further ensuring the stability of the fixed cone 12.

[0083] Finally, the drive block 15 is rotated in the opposite direction. At this time, the transmission plate 28 rotates in the groove 27 under the action of the inclined surface of the protrusion 26, and cannot push the protrusion 26 to rotate. At this time, the turntable 25 can only drive the lead screw 21 to rotate. During the rotation of the lead screw 21, the connecting block 22 is driven to rise through the threaded hole. During the rise of the connecting block 22, the insert plate 24 is pushed to move along the through hole 20 through the connecting rod 23, so that the insert plate 24 is inserted into the soil, which further increases the stability between the fixed cone 12 and the ground.

[0084] It should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

Claims

1. A fabricated building structure combined pile foundation node structure, characterized by, The utility model relates to a kind of combined pile foundation node structures of prefabricated building structure, including: Mounting seat (1) for connecting, fixed platform; Fixed cone (12) is rotatably mounted at the bottom of mounting seat (1), and its outside is provided with spiral fin (13) around;And Driving mechanism, it is driven by one-way transmission assembly and fixed cone (12) transmission connection, for driving fixed cone (12) to carry out one-way rotation, to drill into soil body; The top of mounting seat (1) is rotatably installed with driving block (15), and driving mechanism is connected with driving block (15), for driving driving block (15) to rotate;The upper end of fixed cone (12) passes through mounting seat (1) and is connected with driving block (15) by one-way transmission assembly; The one-way transmission assembly includes: Rotating disc (25) is fixedly installed at the bottom of driving block (15), and its bottom is processed with several evenly spaced recesses (27); Lug (26) is evenly spaced and distributed in the inner wall of fixed cone (12), and its number and distribution position are matched with recess (27);And Transmission plate (28) is rotatably installed in one side inner wall of recess (27), and its other end extends between adjacent two lugs (26), transmission plate (28) is obliquely distributed along recess (27) and can only rotate between the side wall of recess (27), one side of lug (26) is processed as oblique surface matched with transmission plate (28); The combined pile foundation node structure of prefabricated building structure is also provided with support assembly, and the support assembly includes: Plugboard (24) is located in the inner cavity of fixed cone (12), and can be slidably installed in the through hole (20) on the side wall of fixed cone (12); Lead screw (21) is rotatably installed in the inner cavity of fixed cone (12), and its top is fixedly installed at the bottom of rotating disc (25);And Connecting block (22) is threadedly connected with lead screw (21), and is rotatably connected with plugboard (24) by connecting rod (23).

2. The fabricated building structure composite pile foundation node structure according to claim 1, characterized in that, The driving block (15) is a polygonal structure, and the driving mechanism includes a connecting seat (16) having a polygonal slot (19) formed at the center thereof and matched with the outer shape of the driving block (15), and a handle (9) rotatably installed at the top of the connecting seat (16).

3. The fabricated building structure composite pile foundation node structure according to claim 2, characterized in that, A plurality of auxiliary fixing assemblies are evenly spaced and distributed on the outer periphery of the mounting seat (1) and located outside the fixed cone (12), and each auxiliary fixing assembly includes a connecting shaft (10) rotatably installed on the mounting seat (1) and a spiral pointed cone (11) fixedly installed at the bottom of the connecting shaft (10).

4. The fabricated building structure composite pile foundation node structure according to claim 3, characterized in that, The rotating driving mechanism of the auxiliary fixing assembly includes: First gear (5) is rotatably installed at the top of mounting seat (1), each connecting shaft (10) is fixedly connected with a corresponding first gear (5); Second gear (6) is rotatably installed at the top of mounting seat (1), and a transmission groove (14) is formed at the center thereof and located outside the driving block (15), each first gear (5) is engaged with the second gear (6);And Transmission block (17) can be slidably fitted outside the connecting seat (16), and it is engaged with the transmission groove, for driving the second gear (6) to rotate.

5. The fabricated building structure composite pile foundation node structure according to claim 4, characterized in that, The outer side of the mounting seat (1) is provided with a sealing cover (2), the inner wall of the top of the sealing cover (2) is provided with a partition plate (30), the partition plate (30) is snap-fitted with a splicing seat (3) on the top, and the splicing seat (3) is processed with a splicing hole for the bearing platform to pass through and matched with the size of the bearing platform for installing the bearing platform, and the inner wall of the splicing hole is provided with a rubber ring (32); The top of the mounting seat (1) and the partition plate (30) are further provided with a rubber gasket (4).

6. A method of construction of a modular building structure combination pile foundation joint structure, characterized by, The assembled building structure combined pile foundation node structure of any one of claims 1-5 drives the fixed cone (12) to rotate forward through the driving mechanism and the one-way transmission assembly, so that the spiral blade (13) on the surface of the fixed cone (12) drills into the soil, and then the bearing platform is fixedly installed on the mounting seat (1), thereby realizing the connection of the pile foundation.

7. The method of construction of a fabricated building structure composite pile foundation node structure according to claim 6, characterized in that, Specifically includes the following processes: Step one, mounting seat fixing Drive the driving block (15) to rotate forward, at this time the transmission plate (28) cannot rotate, under the cooperation of the transmission plate (28) and the protrusion (26), drive the fixed cone (12) to rotate forward, realize the soil drilling effect of the fixed cone (12); Drive the driving block (15) to rotate reversely, at this time the transmission plate (28) rotates in the groove (27) under the resistance action of the protrusion (26), the fixed cone (12) remains stationary, the turntable (25) drives the screw rod (21) to rotate reversely, thereby pushing the insert plate (24) to move along the through hole (20) under the action of the connecting block (22) and the connecting rod (23), so that the insert plate (24) is inserted into the soil; Step two, installation of the bearing platform After the mounting seat fixing work is completed, the bearing platform is inserted into the splicing hole on the splicing seat (3), and the deformation of the rubber ring (32) realizes the preliminary fixation of the bearing platform and the splicing seat (3); Place the splicing seat (3) on the partition plate (30) of the sealing cover, and rotate the bearing platform to make the splicing seat (3) snap onto the partition plate (30), thereby realizing the preliminary fixation between the bearing platform and the mounting seat, and finally filling the gap between the mounting seat and the bearing platform with concrete, thereby completing the final fixation work of the bearing platform.

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