A building pipe pile connector and its connection method

Abstract

The present invention discloses a building pipe pile connector and its connection method, which relates to the technical field of connection of concrete prefabricated products, and includes a plurality of connecting pins and a plurality of sleeves. The plurality of connecting pins and the plurality of sleeves are arranged one-to-one; wherein, the bottom end of the connecting pin is provided with a conical end which is integrally structured and coaxially arranged with it, and the small-diameter end of the conical end is connected to the connecting pin; wherein, a counterbore is formed inside the sleeve, the outer diameter of the connecting pin is equal to the small-diameter of the counterbore, a middle cylinder is fixed inside the large-diameter of the sleeve, and a plurality of second arc guide bars coaxially arranged with it are fixed on the inner peripheral wall of the middle cylinder. The present invention is provided with a rotation centering mechanism and a plurality of locking petals. During the process of inserting the connecting pin into the sleeve, the rotation centering mechanism makes the plurality of locking petals rotate around the central axis of the sleeve and the plurality of locking petals gradually approach the conical end of the connecting pin. When the connecting pin is completely inserted, the locking petals are engaged with the conical end.

Description

Technical Field

[0001] The present invention relates to the technical field of connecting concrete prefabricated products, and in particular to a building pipe pile connector and a connecting method thereof. Background Art

[0002] Concrete prefabricated products need to be connected through connectors. Generally, a connecting pin or a connecting rod is inserted into the prefabricated product, and then the connection is completed by locking with a locking member.

[0003] After retrieval, the Chinese patent document with the authorization announcement number CN217150185U discloses a pipe pile connection structure, including: a connection box body, the connection box body is provided with an opening and a containing area communicated therewith, the containing area includes a conical inner cavity, the small end of the conical inner cavity is close to the opening, and the connection box body is used to be arranged inside the pipe pile; a locking sleeve, the locking sleeve is internally connected to the conical inner cavity, and includes at least two locking petals evenly distributed along the circumferential direction of the conical inner cavity, the locking petals enclose a connection hole, and the hole wall of the connection hole is provided with an engaging structure; a connection pin, the connection pin includes a first connection end, the first connection end is conical, and the first connection end is connected to the connection hole through the engaging structure; an elastic member, the elastic member includes a conical section, the conical section cooperates with the conical inner cavity, and the small end of the conical section abuts against the large end of the locking sleeve, and the large end of the conical section abuts against the bottom of the containing area. When the above pipe pile connection structure is connected, the operation is simple and convenient, the connection structure is stable, and the use reliability of the pipe pile connection structure is improved.

[0004] After retrieval, the Chinese patent document with the authorization announcement number CN217150189U discloses a connection assembly, a connection structure and a precast pile. A connection assembly includes: a sleeve, a locking member and an elastic member. Among them, the sleeve is provided with a first accommodating cavity and a second accommodating cavity that communicate with each other. One end of the sleeve close to the second accommodating cavity is provided with an opening. A connection portion is provided in the first accommodating cavity. The inner wall of the second accommodating cavity fits with the outer wall of the locking member. The elastic member is arranged in the second accommodating cavity and pushes the locking member to have a tendency to move towards the first accommodating cavity. The above connection assembly is used to be pre-embedded in the precast pile in advance, and can be used to realize the tight connection between the connection pin and the sleeve, and prevent the connection pin from coming out of the sleeve; by using the connection portion in the first accommodating cavity, the pre-tension between the steel bar and the sleeve can be realized. When the above connection assembly is used for connecting a precast pile including a first pile section and a second pile section, the first pile section and the second pile section can be tightly connected, the connection method is simple and fast, and the connection efficiency of the precast pile can be effectively improved.

[0005] Based on the above retrieval and the prior art, it is found that both of the above two patents utilize the meshing form of the inner conical sleeve to achieve the stable connection between the connecting pin and the barrel sleeve, and the inner conical sleeves are both multi-lobed structures. However, it does not consider whether a certain lobe of the inner conical sleeve can smoothly slide along the inner conical surface of the sleeve when the connecting pin is inserted. Secondly, the inner side of the inner conical sleeve is provided with teeth, and neither of the two patents considers whether most of the teeth in the inner conical sleeve can smoothly mesh with the connecting pin (as shown in Figure 1 ), so there are certain limitations in actual use. Summary of the Invention

[0006] The purpose of the present invention is to provide a building pipe pile connector and its connection method to solve the problems raised in the above background technology.

[0007] The technical solution of the present invention is: a building pipe pile connector, including a plurality of connecting pins and a plurality of sleeves, and the plurality of connecting pins and the plurality of sleeves are arranged one-to-one;

[0008] Among them, the bottom end of the connecting pin is provided with a conical end integrally structured and coaxially arranged with it, and the small-diameter end of the conical end is connected to the connecting pin;

[0009] Among them, a counterbore is opened inside the sleeve. The outer diameter of the connecting pin is equal to the small diameter of the counterbore. An intermediate cylinder is fixed inside the large-diameter of the sleeve. A plurality of second arc guide bars coaxially arranged with it are fixed on the inner peripheral wall of the intermediate cylinder, and a limiting lobe is slidably sleeved on the second arc guide bar. The side of the limiting lobe facing the central axis of the intermediate cylinder is a conical surface. An elastic structure for applying a thrust to the limiting lobe is arranged on the outer side of the second arc guide bar. An arc guide groove not concentric with the intermediate cylinder is opened on the bottom circular surface of the intermediate cylinder, and a sliding column is slidably embedded in the arc guide groove. The top end of the sliding column is fixed with a locking lobe. The side of the locking lobe facing the central axis of the intermediate cylinder and the side facing away from the central axis of the intermediate cylinder are both conical surfaces, and the conical surface of the locking lobe facing away from the central axis of the intermediate cylinder can fit with the conical surface of the limiting lobe. One end of the sleeve is fixed with a circular plate coaxially arranged with it. A positioning cylinder is fixed on the outer side of the circular plate, and a sliding cylinder is slidably sleeved on the outer side of the positioning cylinder. A plurality of inclined grooves are opened on the outer circumferential surface of the positioning cylinder, and a cylinder is fixed on the inner side of the sliding cylinder and is slidably arranged in the inclined groove. A connecting structure is arranged between the outer circumferential surface of the positioning cylinder and the sliding column, and a second spring is arranged inside the positioning cylinder.

[0010] Preferably, the elastic structure includes a first spring. One end of the second arc guide bar is provided with a limiting plate integrally structured with it, and the other end of the second arc guide bar is provided with an extension plate integrally structured with it. The two ends of the first spring are respectively fixed on the extension plate and the limiting lobe.

[0011] Preferably, the connection structure includes a first arc guide bar, which is coaxially arranged with the middle cylinder and fixed at the bottom of the middle cylinder. A moving block is slidably sleeved on the first arc guide bar. A straight slot is formed on the outer side of the moving block. The bottom end of the sliding column is provided with a cube integrally structured therewith, and the cube is slidably inserted into the straight slot.

[0012] Preferably, the connection structure further includes a connecting plate, one end of the connecting plate is fixed at the outer bottom end of the sliding cylinder. The connecting plate is aligned with the moving block and a telescopic structure is arranged between them.

[0013] Preferably, the telescopic structure includes a fixed cylinder and a moving column. One end of the moving column is slidably inserted into the fixed cylinder. The other end of the moving column is fixed with a concave block. The concave opening of the concave block is clamped on the moving block. One end of the fixed cylinder is fixed on the connecting plate.

[0014] Preferably, it further includes a first connecting plate and a second connecting plate. The first connecting plate is in the shape of a circular plate. A plurality of through holes with the same outer diameter as the connecting pin are formed on the circular surface of the first connecting plate. The connecting pins are arranged in the through holes. The first connecting plate and the second connecting plate are exactly the same. The sleeve is coaxially arranged with the through holes on the second connecting plate one by one.

[0015] Preferably, a plurality of grooves are formed on the outer circumference of the first connecting plate. A plurality of notches are formed on the outer circumference of the second connecting plate. The plurality of notches are aligned with the plurality of grooves one by one. An arc-shaped pressing plate is arranged inside the groove. A rotating hole is formed on the outer side of the pressing plate. A rotating rod is rotatably installed inside the rotating hole. Both ends of the rotating rod are fixed in the notch. When the first connecting plate and the second connecting plate are attached, one end of the pressing plate is pushed downward by the first connecting plate, and the other end of the pressing plate presses on the top of the notch of the second connecting plate.

[0016] Preferably, a plurality of teeth are formed on the locking flap. A tooth groove adapted to the teeth is formed on the outer side of the conical end.

[0017] The present invention also discloses a connection method for a building pipe pile connector, and the specific steps are as follows:

[0018] The first step is to embed and fix a plurality of sleeves on the port of the lower pipe pile;

[0019] The second step is to lay and fix the second connecting plate on the end face of the port of the lower pipe pile after the sleeves are embedded and fixed, and the through holes on the second connecting plate are aligned with the sleeves;

[0020] The third step is to embed and fix a plurality of connecting pins on the port of the upper pipe pile;

[0021] In the fourth step, after the connecting pin is embedded and fixed, lay and fix the first connecting plate on the end face of the lower pipe pile, and the connecting pin passes through the through hole on the first connecting plate;

[0022] In the fifth step, the lower pipe pile stands on the ground. Use a crane to place the upper pipe pile above the lower pipe pile. Then align the connecting pin with the sleeve and lower the upper pipe pile. The connecting pin of the upper pipe pile is inserted into the sleeve.

[0023] The present invention provides a building pipe pile connector and its connection method through improvement. Compared with the prior art, it has the following beneficial effects:

[0024] First: The present invention is provided with a rotation centering mechanism and a plurality of locking petals. During the process of inserting the connecting pin into the sleeve, the rotation centering mechanism makes the plurality of locking petals rotate around the central axis of the sleeve and the plurality of locking petals gradually approach the conical end of the connecting pin. When the connecting pin is completely inserted, the locking petals are engaged with the conical end. It can be seen that the rotation centering mechanism can ensure the smooth engagement of the locking petals and the conical end, and improve the connection stability between the locking petals and the conical end;

[0025] Second: The present invention is provided with a pressing plate. During the process of the two connecting plates fitting together, one end of the pressing plate is pushed downward by the first connecting plate, and the other end of the pressing plate presses on the top of the groove of the first connecting plate. Thus, the fitting degree between the first connecting plate and the second connecting plate is improved, enabling the pressing plate to limit the outer circumference of the first connecting plate. The first connecting plate and the second connecting plate are not likely to slide relative to each other, improving the connection stability. Description of the Drawings

[0026] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0027] Figure 1 Schematic diagram of the locking petals in the prior art not being fully engaged with the connecting pin;

[0028] Figure 2 Schematic diagram of the installation structure of the present invention;

[0029] Figure 3 Schematic diagram of the first connecting plate and the second connecting plate of the present invention being fitted together;

[0030] Figure 4 Schematic diagram of the internal structure of the sleeve of the present invention;

[0031] Figure 5 Schematic diagram of the circular plate and the positioning cylinder structure of the present invention;

[0032] Figure 6 Schematic diagrams of the sliding cylinder, telescopic structure and concave block of the present invention;

[0033] Figure 7 Schematic diagram of the mounting structure of the moving block of the present invention;

[0034] Figure 8 Schematic diagrams of the mounting structures of the limiting flap and the locking flap of the present invention;

[0035] Figure 9 Schematic diagram of the locking flap structure of the present invention;

[0036] Figure 10 Schematic diagram of the intermediate cylinder structure of the present invention;

[0037] Figure 11 Schematic diagram of the pressing plate structure of the present invention;

[0038] Figure 12 Schematic diagram of the cross-sectional view of the sleeve of the present invention.

[0039] Reference numerals:

[0040] 1. First connecting plate; 2. Second connecting plate; 3. Connecting pin; 4. Sleeve; 5. Locking flap; 6. Sliding cylinder; 7. Positioning cylinder; 8. Limiting flap; 9. Second spring; 10. Telescopic structure; 11. Intermediate cylinder; 12. Concave block; 13. Conical end; 14. Circular plate; 15. Inclined groove; 16. Moving block; 17. First arc guide bar; 18. Arc guide groove; 19. Second arc guide bar; 20. First spring; 21. Extension plate; 22. Cuboid; 23. Slide post; 24. Pressing plate; 25. Groove; 26. Limiting plate. Detailed implementation manners

[0041] The present invention will be described in detail below. The technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0042] The present invention provides a building pipe pile connector and its connection method by improvement. The technical solution of the present invention is:

[0043] As Figures 1 to 12 shown, the embodiment of the present invention provides a building pipe pile connector, including a plurality of connecting pins 3 and a plurality of sleeves 4. The plurality of connecting pins 3 and the plurality of sleeves 4 are arranged one-to-one;

[0044] Wherein, the bottom end of the connecting pin 3 is provided with a conical end 13 which is integrally structured with and coaxially arranged with the connecting pin 3, and the small-diameter end of the conical end 13 is connected to the connecting pin 3;

[0045] Wherein, a counterbore is formed inside the sleeve 4. The outer diameter of the connecting pin 3 is equal to the small-diameter of the counterbore. A middle cylinder 11 is fixed inside the large-diameter of the sleeve 4. A plurality of second arc guide bars 19 coaxially arranged with the middle cylinder 11 are fixed on the inner peripheral wall of the middle cylinder 11. A limiting flap 8 is slidably sleeved on the second arc guide bar 19. The second arc guide bar is provided to enable the limiting flap 8 to rotate only around the central axis of the middle cylinder 11. The side of the limiting flap 8 facing the central axis of the middle cylinder 11 is a conical surface. An elastic structure for applying a thrust to the limiting flap 8 is arranged outside the second arc guide bar 19. An arc guide groove 18 non-concentric with the middle cylinder 11 is formed on the bottom annular surface of the middle cylinder 11. A sliding column 23 is slidably embedded in the arc guide groove 18. When the sliding column 23 slides along the arc guide groove 18, the sliding column 23 gradually approaches the central axis of the middle cylinder 11. The top end of the sliding column 23 is fixed with a locking flap 5. When the sliding column 23 slides along the arc guide groove 18, the sliding column 23 drives the locking flap 5 to gradually approach the central axis of the middle cylinder 11. The side of the locking flap 5 facing the central axis of the middle cylinder 11 and the side facing away from the central axis of the middle cylinder 11 are both conical surfaces, and the conical surface of the locking flap 5 facing away from the central axis of the middle cylinder 11 can be fitted with the conical surface of the limiting flap 8. When the limiting flap 8 is clamped between the locking flap 5 and the middle cylinder 11, at this time, if the locking flap 5 is reset along the arc guide groove 18, due to the setting of the limiting flap 8, the locking flap 5 has no moving space, thus completing self-locking. One end of the sleeve 4 is fixed with a circular plate 14 coaxially arranged with it. A positioning cylinder 7 is fixed on the outside of the circular plate 14. A sliding cylinder 6 is slidably sleeved on the outside of the positioning cylinder 7. A plurality of inclined grooves 15 are formed on the outer circumferential surface of the positioning cylinder 7. A cylinder is fixed on the inner side of the sliding cylinder 6, and the cylinder is slidably arranged in the inclined groove 15. A connecting structure is arranged between the outer circumferential surface of the positioning cylinder 7 and the sliding column 23. A second spring 9 is arranged inside the positioning cylinder 7. The locking flap 5 is provided with a plurality of teeth. A tooth groove adapted to the teeth is formed on the outside of the conical end 13. The design of the teeth and the teeth is to improve the connection stability and connection strength between the locking flap 5 and the conical end 13.

[0046] When the connecting pin 3 is inserted into the sleeve 4, the conical end 13 of the connecting pin 3 first extends into the sleeve 4. The conical end 13 contacts the sliding cylinder 6, and the conical end 13 applies a downward push to the sliding cylinder 6. The cylinder body inside the sliding cylinder 6 moves along the inclined groove 15 of the positioning cylinder 7 on the circular plate 14. The sliding cylinder 6 rotates while moving downward relative to the positioning cylinder 7. At this time, the second spring 9 inside the positioning cylinder 7 is compressed; during the process that the sliding cylinder 6 rotates while moving downward relative to the positioning cylinder 7, the sliding cylinder 6 drives the moving block 16 to rotate through the telescopic structure 10. At this time, the fixed cylinder inside the telescopic structure 10 moves downward relative to the moving column. The moving block 16 moves along the second arc guide bar 19. The straight slot on the moving block 16 drives the locking flap 5 to move through the cube 22 and the sliding column 23, that is, the sliding column 23 slides along the arc guide groove 18, and the sliding column 23 drives the locking flap 5 to gradually approach the conical end 13. The cube 22 at the bottom end of the sliding column 23 slides along the straight slot of the moving block 16. When the locking flap 5 contacts the limiting flap 8, the limiting flap 8 is pushed, and the first spring 20 is compressed. When the locking flap 5 can completely fit with the conical end 13 on the connecting pin 3, at this time, the conical surface of the locking flap 5 facing away from the central axis of the middle cylinder 11 is concentric with the conical surface of the limiting flap 8. At this time, the first spring 20 is released, and the limiting flap 8 is stuck between the locking flap 5 and the middle cylinder 11. At this time, the locking flap 5 has a reset tendency. Due to the setting of the limiting flap 8, the locking flap 5 has no moving space, thus completing self-locking.

[0047] Specifically, as can be seen from the attached Figure 8 It can be known that the elastic structure includes the first spring 20. One end of the second arc guide bar 19 is provided with a limiting plate 26 integrally structured with it, and the other end of the second arc guide bar 19 is provided with an extension plate 21 integrally structured with it. The two ends of the first spring 20 are respectively fixed on the extension plate 21 and the limiting flap 8. When the locking flap 5 contacts the limiting flap 8, the limiting flap 8 is pushed, and the first spring 20 is compressed. When the locking flap 5 can completely fit with the conical end 13 on the connecting pin 3, at this time, the conical surface of the locking flap 5 facing away from the central axis of the middle cylinder 11 is concentric with the conical surface of the limiting flap 8. At this time, the first spring 20 is released, and the limiting flap 8 is stuck between the locking flap 5 and the middle cylinder 11.

[0048] Specifically, as can be seen from the attached Figure 7 It can be known that the connecting structure includes the first arc guide bar 17. The first arc guide bar 17 is coaxially arranged with the middle cylinder 11 and fixed at the bottom of the middle cylinder 11. A moving block 16 is slidably sleeved on the first arc guide bar 17. A straight slot is opened on the outer side of the moving block 16. The bottom end of the sliding column 23 is provided with a cube 22 integrally structured with it, and the cube 22 is slidably embedded in the straight slot. When the moving plate moves along the first arc guide bar 17, the straight slot on the moving block 16 drives the locking flap 5 to move through the cube 22 and the sliding column 23. The setting of the cube 22 is to prevent the sliding column 23 from rotating in the arc groove.

[0049] Specifically, in combination with the attached Figure 6 As can be seen, the connection structure further includes a connecting plate. One end of the connecting plate is fixed to the outer bottom end of the sliding cylinder 6. The connecting plate is aligned with the moving block 16 and a telescopic structure 10 is arranged between them. The telescopic structure 10 includes a fixed cylinder and a moving column. One end of the moving column is slidably inserted into the fixed cylinder, and the other end of the moving column is fixed with a concave block 12. The notch of the concave block 12 is clamped on the moving block 16. One end of the fixed cylinder is fixed to the connecting plate. During the process that the sliding cylinder 6 rotates while moving downward relative to the positioning cylinder 7, the sliding cylinder 6 drives the connecting plate to rotate. The connecting plate drives the moving block 16 to rotate by means of the telescopic structure 10. At this time, the fixed cylinder in the telescopic structure 10 moves downward relative to the moving column.

[0050] Specifically, in combination with the attached Figure 2 , the attached Figure 3 and the attached Figure 11 As shown, a building pipe pile connector further includes a first connecting plate 1 and a second connecting plate 2. The first connecting plate 1 is in the shape of a circular plate. A plurality of through holes with the same outer diameter as that of the connecting pin 3 are opened on the circular surface of the first connecting plate 1. The connecting pin 3 is arranged in the through holes. The first connecting plate 1 and the second connecting plate 2 are exactly the same. The sleeve 4 and the through holes on the second connecting plate 2 are arranged coaxially one by one. A plurality of grooves 25 are opened on the outer circumference of the first connecting plate 1. A plurality of notches are opened on the outer circumference of the second connecting plate 2. The plurality of notches are exactly aligned with the plurality of grooves 25 one by one. A pressing plate 24 with an arc-shaped cross-section is arranged inside the groove 25. A rotating hole is opened on the outer side of the pressing plate 24. A rotating rod is rotatably installed inside the rotating hole. Both ends of the rotating rod are fixed in the notch. When the first connecting plate 1 and the second connecting plate 2 are attached, one end of the pressing plate 24 is pushed downward by the first connecting plate 1, and the other end of the pressing plate 24 presses on the top of the notch of the second connecting plate 2. Here, a supplementary description is made for the pressing plate 24. When the first connecting plate 1 and the second connecting plate 2 are completely attached, one end of the pressing plate 24 presses on the first connecting plate 1, and at the same time, the pressing plate 24 is in contact with the first connecting plate 1; during the process that the two connecting plates are attached to each other, one end of the pressing plate 24 is pushed downward by the first connecting plate 1, and the other end of the pressing plate 24 presses on the top of the notch of the second connecting plate 2, so that the fitting degree of the first connecting plate 1 and the second connecting plate 2 is improved, the pressing plate 24 can limit the outer circumference of the first connecting plate 1, and the first connecting plate 1 and the second connecting plate 2 are not easy to slide relative to each other, thereby improving the connection stability.

[0051] A connection method for a building pipe pile connector is as follows in specific steps:

[0052] The first step is to embed and fix a plurality of sleeves 4 on the port of the lower pipe pile;

[0053] Step 2: After the sleeve 4 is embedded and fixed, lay and fix the second connecting plate 2 on the port end face of the lower pipe pile, and the through hole on the second connecting plate 2 is aligned with the sleeve 4 exactly;

[0054] Step 3: Embed and fix a plurality of connecting pins 3 on the port of the upper pipe pile;

[0055] Step 4: After the connecting pins 3 are embedded and fixed, lay and fix the first connecting plate 1 on the port end face of the lower pipe pile, and the connecting pins 3 pass through the through holes on the first connecting plate 1;

[0056] Step 5: The lower pipe pile stands on the ground. Use a crane to place the upper pipe pile above the lower pipe pile. Then align the connecting pins 3 with the sleeves 4, lower the upper pipe pile, and insert the connecting pins 3 of the upper pipe pile into the sleeves 4.

[0057] Working principle: During the process that the first connecting plate 1 fits with the second connecting plate 2, insert the connecting pins 3 into the sleeves 4. When the connecting pins 3 are inserted into the sleeves 4, the conical ends 13 of the connecting pins 3 first extend into the sleeves 4. The conical ends 13 contact the sliding sleeves 6, and the conical ends 13 exert a downward push on the sliding sleeves 6. The cylinders in the sliding sleeves 6 move along the inclined grooves 15 of the positioning cylinders 7 on the circular plates 14. The sliding sleeves 6 move downward and rotate relative to the positioning cylinders 7. At this time, the second springs 9 in the positioning cylinders 7 are compressed;

[0058] During the process that the sliding sleeves 6 move downward and rotate relative to the positioning cylinders 7, the sliding sleeves 6 drive the connecting plates to rotate. The connecting plates drive the moving blocks 16 to rotate by means of the telescopic structures 10. At this time, the fixed cylinders in the telescopic structures 10 move downward relative to the moving columns. The moving blocks 16 move along the second arc guide bars 19. The straight slots on the moving blocks 16 drive the locking petals 5 to move through the cubes 22 and the sliding columns 23, that is, the sliding columns 23 slide along the arc guide grooves 18. The sliding columns 23 drive the locking petals 5 to gradually approach the conical ends 13. The cubes 22 at the bottom ends of the sliding columns 23 slide along the straight slots of the moving blocks 16. When the locking petals 5 contact the limiting petals 8, the limiting petals 8 are pushed, and the first springs 20 are compressed. When the locking petals 5 can completely fit with the conical ends 13 on the connecting pins 3, at this time, the conical surfaces of the locking petals 5 facing away from the central axis of the middle cylinder 11 are concentric with the conical surfaces of the limiting petals 8. At this time, the first springs 20 are released, and the limiting petals 8 are stuck between the locking petals 5 and the middle cylinder 11. At this time, the locking petals 5 have a reset tendency. Due to the setting of the limiting petals 8, the locking petals 5 have no moving space, thus completing self-locking;

[0059] During the process of the two connecting plates fitting together, one end of the pressing plate 24 is pushed downward by the first connecting plate 1, and the other end of the pressing plate 24 presses on the top of the notch of the second connecting plate 2. As a result, the fitting degree between the first connecting plate 1 and the second connecting plate 2 is improved, enabling the pressing plate 24 to limit the outer circumference of the first connecting plate 1. The first connecting plate 1 and the second connecting plate 2 are not prone to relative sliding, enhancing the stability of the connection.

[0060] The above description enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but rather will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A building pipe pile connector, comprising a plurality of connecting pins (3) and a plurality of sleeves (4), characterized in that: The multiple connecting pins (3) are arranged one-to-one with the multiple sleeves (4); Wherein, a conical end (13) which is of an integral structure with and coaxially arranged with the connecting pin (3) is arranged at the bottom end of the connecting pin (3), and the small-diameter end of the conical end (13) is connected with the connecting pin (3); Wherein, a counterbore is formed inside the sleeve (4), the outer diameter of the connecting pin (3) is equal to the small diameter of the counterbore, an intermediate cylinder (11) is fixed inside the large-diameter part of the sleeve (4), a plurality of second arc guide bars (19) which are coaxially arranged with the intermediate cylinder (11) are fixed on the inner peripheral wall of the intermediate cylinder (11), a limiting flap (8) is slidably sleeved on the second arc guide bar (19), one side of the limiting flap (8) facing the central axis of the intermediate cylinder (11) is a conical surface, an elastic structure for applying a thrust to the limiting flap (8) is arranged on the outer side of the second arc guide bar (19), an arc guide groove (18) which is not concentric with the intermediate cylinder (11) is formed in the bottom annular surface of the intermediate cylinder (11), a sliding column (23) is slidably embedded in the arc guide groove (18), a locking flap (5) is fixed at the top end of the sliding column (23), both the side of the locking flap (5) facing the central axis of the intermediate cylinder (11) and the side of the locking flap (5) facing away from the central axis of the intermediate cylinder (11) are conical surfaces, and the conical surface of the locking flap (5) facing away from the central axis of the intermediate cylinder (11) can be attached to the conical surface of the limiting flap (8), a circular plate (14) which is coaxially arranged with the sleeve (4) is fixed at one end of the sleeve (4), a positioning cylinder (7) is fixed on the outer side of the circular plate (14), a sliding cylinder (6) is slidably sleeved on the outer side of the positioning cylinder (7), a plurality of inclined grooves (15) are formed in the outer circumferential surface of the positioning cylinder (7), a cylinder body is fixed on the inner side of the sliding cylinder (6), and the cylinder body is slidably arranged in the inclined grooves (15), a connecting structure is arranged between the outer circumferential surface of the positioning cylinder (7) and the sliding column (23), and a second spring (9) is arranged inside the positioning cylinder (7).

2. The building pipe pile connector according to claim 1, characterized in that: The elastic structure includes a first spring (20), a limiting plate (26) which is of an integral structure with the second arc guide bar (19) is arranged at one end of the second arc guide bar (19), an extension plate (21) which is of an integral structure with the second arc guide bar (19) is arranged at the other end of the second arc guide bar (19), and two ends of the first spring (20) are respectively fixed on the extension plate (21) and the limiting flap (8).

3. The building pipe pile connector according to claim 1, characterized in that: The connecting structure includes a first arc guide bar (17), the first arc guide bar (17) is coaxially arranged with the intermediate cylinder (11) and fixed at the bottom of the intermediate cylinder (11), a moving block (16) is slidably sleeved on the first arc guide bar (17), a straight groove opening is formed on the outer side of the moving block (16), a cube body (22) which is of an integral structure with the sliding column (23) is arranged at the bottom end of the sliding column (23), and the cube body (22) is slidably embedded in the straight groove opening.

4. The building pipe pile connector according to claim 3, characterized in that: The connecting structure further includes a connecting plate, one end of the connecting plate is fixed at the outer bottom end of the sliding cylinder (6), the connecting plate is aligned with the moving block (16), and a telescopic structure (10) is arranged between the two.

5. The building pipe pile connector according to claim 4, wherein: The telescopic structure (10) includes a fixed cylinder and a moving column. One end of the moving column is slidably inserted into the fixed cylinder, and a fixed concave block (12) is provided at the other end of the moving column. The notch of the concave block (12) is clamped on the moving block (16), and one end of the fixed cylinder is fixed on the connecting plate.

6. The building pipe pile connector according to claim 1, wherein: It further includes a first connecting plate (1) and a second connecting plate (2). The first connecting plate (1) is in the shape of a circular plate, and a plurality of through holes with the same outer diameter as the connecting pin (3) are formed on the circular surface of the first connecting plate (1). The connecting pin (3) is arranged in the through holes. The first connecting plate (1) and the second connecting plate (2) are exactly the same, and the sleeves (4) are coaxially arranged one-to-one with the through holes on the second connecting plate (2).

7. The building pipe pile connector according to claim 6, characterized in that: A plurality of grooves (25) are formed on the outer circumference of the first connecting plate (1), and a plurality of notches are formed on the outer circumference of the second connecting plate (2). The plurality of notches are exactly aligned one-to-one with the plurality of grooves (25). An arc-shaped pressing plate (24) is arranged inside the groove (25). A rotating hole is formed on the outer side of the pressing plate (24), and a rotating rod is rotatably installed inside the rotating hole. Both ends of the rotating rod are fixed in the notches. When the first connecting plate (1) and the second connecting plate (2) are attached, one end of the pressing plate (24) is pushed downward by the first connecting plate (1), and the other end of the pressing plate (24) presses on the top of the notch of the second connecting plate (2).

8. The building pipe pile connector according to claim 7, characterized in that: The locking flap (5) is provided with a plurality of teeth, and a tooth groove adapted to the teeth is formed on the outer side of the conical end (13).

9. A connecting method for a building pipe pile connector, which is applied to the building pipe pile connector according to any one of claims 6-8, characterized in that, The specific steps are as follows: First step, embed and fix a plurality of sleeves (4) on the port of the lower pipe pile. Second step, after the sleeves (4) are embedded and fixed, lay and fix the second connecting plate (2) on the end face of the port of the lower pipe pile, and the through holes on the second connecting plate (2) are exactly aligned with the sleeves (4). Third step, embed and fix a plurality of connecting pins (3) on the port of the upper pipe pile. Fourth step, after the connecting pins (3) are embedded and fixed, lay and fix the first connecting plate (1) on the end face of the port of the lower pipe pile, and the connecting pins (3) pass through the through holes on the first connecting plate (1). Fifth step, the lower pipe pile stands on the ground. Use a crane to place the upper pipe pile above the lower pipe pile. Then align the connecting pin (3) with the sleeve (4), lower the upper pipe pile, and insert the connecting pin (3) of the upper pipe pile into the sleeve (4).

Images