A prefabricated pile connector structure for complex geological engineering

Abstract

This invention discloses a precast pile connector structure for complex geological engineering, relating to the field of precast pile connection technology. It includes a lower precast pile section and an upper precast pile section distributed at the top of the lower section. Connectors are pre-embedded at the ends of both the lower and upper precast pile sections. Each connector includes end plates distributed at the ends of the lower and upper precast pile sections. A quick-connect mechanism is installed on the top of the connector. The quick-connect mechanism includes a sleeve plate distributed between the two end plates. The sleeve plate has several vertically distributed rotating grooves inside, and a fixing component is rotatably installed inside each rotating groove. Through the quick connection of the connector and the quick-connect mechanism, the lower and upper precast pile sections are quickly fixed. This invention discloses a precast pile connector structure for complex geological engineering, which has the advantages of convenient operation and high structural strength after connection.

Description

Technical Field

[0001] This invention relates to the field of precast pile connection technology, and in particular to a precast pile connector structure for complex geological engineering. Background Technology

[0002] Precast piles refer to piles that are prefabricated on-site or nearby. Shorter piles can also be produced in a prefabrication plant. They are characterized by their ability to withstand large loads, durability, and fast construction speed, but also have a significant impact on the surrounding environment. The construction process involves prefabrication, transportation, stacking, and pile driving. Precast piles are piles of various materials and forms (such as wooden piles, concrete square piles, prestressed concrete pipe piles, steel piles, etc.) manufactured in factories or on construction sites. They are driven, pressed, or vibrated into the soil using pile driving equipment. Precast piles can also be spliced ​​according to usage requirements to meet the construction requirements of complex geological engineering projects. In China's construction industry, the most commonly used precast piles are mainly concrete precast piles and steel piles.

[0003] Existing precast pile connections mainly involve welding reinforcing bars or using concrete cores to anchor the reinforcing bars on the end plates. The upper pile section is then hoisted onto the lower pile section, adjusted, and welding begins. Each joint takes approximately 40 minutes to weld, resulting in the entire pile remaining in the ground for too long, which can lead to difficulties in pile driving, cumbersome operations, and even failure to achieve the intended design goals. Furthermore, the welding of the upper and lower pile sections is affected by factors such as the welder's skill level, climate, and construction techniques, resulting in low efficiency and difficulty in guaranteeing quality. Summary of the Invention

[0004] This invention discloses a precast pile connector structure for complex geological engineering, aiming to solve the technical problem that the existing precast pile connection mainly adopts the method of welding steel bars or concrete core anchoring steel bars on the end plate. The connection strength of the two precast piles is affected by the welder's skill level, climate, construction process and other factors, which is inefficient and difficult to guarantee the quality.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A precast pile connector structure for complex geological engineering includes a lower precast pile and an upper precast pile distributed on the top of the lower precast pile. Connectors are pre-embedded at the ends of both the lower and upper precast piles. The connectors include end plates distributed at the ends of the lower and upper precast piles.

[0007] The top of the connector is equipped with a quick-connect mechanism, which includes a sleeve plate distributed between the two end plates. The sleeve plate has several evenly distributed rotating slots vertically opened inside, and a fixing kit is rotatably installed inside each rotating slot.

[0008] The lower and upper precast piles are quickly fixed by the quick connection of the connector and the quick-connect mechanism.

[0009] By setting a quick-connect mechanism between the lower and upper precast pile sections, and utilizing the self-locking function of the quick-connect mechanism in conjunction with the connectors, the lower and upper precast pile sections can be quickly connected. The one-way locking method enhances the structural strength of the connected lower and upper precast pile sections. Unlike traditional welding fixation, this method can improve both operational convenience and structural strength.

[0010] In a preferred embodiment, the connector further includes a set of bolt rods fixed to one side of each end plate, and the quick-connect mechanism is threadedly connected to the bolt rods.

[0011] By setting up an end plate structure with built-in bolt rods, the quick-connect mechanism is initially installed using the bolt rods on the side of the end plate structure, thereby ensuring the structural strength between the quick-connect mechanism and the end plate.

[0012] In a preferred embodiment, the quick-connect mechanism further includes the fixing kit and a connector threadedly connected, and another connector is threadedly connected with a plurality of quick-connect kits, the quick-connect kits and the fixing kit engaging.

[0013] By setting up a sleeve plate structure with its own fixing kit, the initial fixing of the sleeve plate is achieved by using the fixing kit and the threaded connection of the bolt rod on the top of the end plate. At the same time, a quick-connect kit is installed on the end plate at the bottom of the upper precast pile. When the upper and lower precast piles are connected, the quick-connect kit and the fixing kit can be quickly connected by snapping together, which ensures structural strength and improves fixing speed. After the connection, the sleeve plate will fit tightly with the two end plates. At this time, the operator can fill the gap between the two with resin or directly weld them, thereby further improving the structural strength of the precast pile connection on the basis of the traditional connection method.

[0014] In a preferred embodiment, the fixing kit includes bolt sleeves rotatably mounted inside the rotating groove. Each bolt sleeve has threaded portions at both ends of its inner wall. Several bolt sleeves are threaded together with a set of bolt rods through the threaded portions. The bolt sleeves also have internal rotating grooves at both ends of their inner walls, and a locking cavity is formed inside the bolt sleeves.

[0015] By setting an inner rotating groove and a locking cavity inside the bolt sleeve, when the quick-connect kit is inserted into the bolt sleeve, the inner rotating groove structure drives the quick-connect kit to rotate and lock into the locking cavity in one direction, thereby realizing the quick connection of the lower and upper precast piles. The one-way locking structure can significantly improve the structural strength after connection.

[0016] In a preferred embodiment, the quick-connect kit includes nuts rotatably mounted on another set of bolt rods. Each nut has an adapter rotatably mounted at its end. The adapter has several inner spiral members arranged around its end, which are helically matched with the inner spiral grooves. A magnetic strip is fixedly mounted on the outer side of the adapter near the end of the nut. A type of magnetic block is symmetrically mounted on the end of the nut, and the magnetic strip and the type of magnetic block are attracted and adhered. A second type of magnetic block is also fixedly mounted on the end of the nut, and the second type of magnetic block is staggered between two of the type of magnetic blocks.

[0017] The system incorporates an adapter structure that is installed at the bottom of the upper precast pile via a nut. The adapter has an inner rotating component at its bottom. As the lower and upper precast piles are quickly connected, the adapter inserts into the bolt sleeve, and the inner rotating component rotates along the inner rotating groove until it reaches the engagement cavity. Simultaneously, additional magnetic blocks and strips attract each other, ensuring the correct distribution of the inner rotating component under normal conditions. As the inner rotating component reaches the engagement cavity, the misaligned magnetic strips are further attracted by the second type of magnetic blocks and undergo a slight rotation, causing the inner rotating component and the inner rotating groove to completely misalign, thus achieving unidirectional locking and ensuring the structural strength after connection.

[0018] In a preferred embodiment, an external toothed ring is rotatably mounted on the top of the sleeve plate, and an internal toothed groove is provided on the outer side of each bolt sleeve, with the external toothed ring and the internal toothed groove meshing together.

[0019] By setting an external toothed ring and several bolt sleeves for synchronous meshing, a rotating bolt sleeve can synchronously drive the other bolt sleeves to rotate, thereby achieving rapid installation of the sleeve plate and improving the convenience of operation.

[0020] As can be seen from the above, the precast pile connector structure for complex geological engineering provided by the present invention has the following improvements and advantages compared with the prior art:

[0021] Firstly, by setting up an end plate structure with built-in bolt rods between two precast piles, the bolt rods on the side of the end plate structure, together with the sleeve plate with built-in fixing kit, are used to achieve initial fixing of the sleeve plate using threads. At the same time, a quick-connect kit is installed on the end plate at the bottom of the upper precast pile. When the upper and lower precast piles are connected, the quick-connect kit and the fixing kit can be quickly connected by snap-fitting, ensuring structural strength while improving fixing speed. At the same time, the sleeve plate after connection will fit tightly with the two end plates. At this time, the operator can fill the gap between the two with resin or directly weld them. Thus, on the basis of the traditional connection method, a high-strength one-way locking structure is added, thereby further improving the structural strength and operational convenience of the precast pile connection.

[0022] Secondly, by setting an inner rotating groove and a locking cavity inside the bolt sleeve, when the adapter of the quick-connect kit is inserted into the bolt sleeve, the inner rotating part at the bottom of the quick-connect is rotated by the inner rotating groove structure and locked into the locking cavity in one direction, thereby realizing the quick connection of the lower and upper precast piles. The one-way locking structure can significantly improve the structural strength after connection. In addition, the first type of magnetic block set at the bottom of the nut and the magnetic strip on the outside of the adapter attract each other to ensure the correct distribution of the inner rotating part under normal conditions. As the inner rotating part reaches the locking cavity, the misaligned magnetic strip will be further attracted by the additional second type of magnetic block and generate a small rotation, causing the inner rotating part and the inner rotating groove to be completely misaligned, thereby achieving one-way locking and further ensuring the structural strength after docking and ensuring the integrity of the device operation. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of a precast pile connector for complex geological engineering proposed in this invention.

[0024] Figure 2 This is an exploded view of the bottom structure of the upper section of a precast pile, which is a precast pile connector structure for complex geological engineering proposed in this invention.

[0025] Figure 3 This is a schematic diagram of a precast pile connector structure for complex geological engineering proposed in this invention.

[0026] Figure 4 This is a schematic diagram of a quick-connect mechanism for a precast pile connector structure for complex geological engineering proposed in this invention.

[0027] Figure 5 This is a schematic diagram of a precast pile connector structure for complex geological engineering proposed in this invention.

[0028] Figure 6 This is a cross-sectional view of a precast pile connector structure for complex geological engineering proposed in this invention.

[0029] Figure 7 This is a schematic diagram of a quick-connect kit structure for a precast pile connector structure for complex geological engineering proposed in this invention.

[0030] Figure 8 This invention proposes a precast pile connector structure for complex geological engineering. Figure 7 Enlarged view of the structure at point A in the middle.

[0031] Figure 9 This is an exploded view of the quick-connect kit structure of a precast pile connector for complex geological engineering proposed in this invention.

[0032] Figure 10This is a cross-sectional view of a fixing kit structure for a precast pile connector structure for complex geological engineering proposed in this invention.

[0033] Figure 11 This is a top view of a fixing kit for a precast pile connector structure for complex geological engineering proposed in this invention.

[0034] Figure 12 This is a diagram showing the positional relationship between the sliding rod and the eccentric groove in a precast pile connector structure for complex geological engineering proposed in this invention.

[0035] In the diagram: 1. Lower precast pile; 2. Upper precast pile; 3. Connector; 301. End plate; 302. Reinforcing rib; 303. Bolt rod; 4. Quick-connect mechanism; 401. Sleeve plate; 402. Rotating groove; 403. Fixing kit; 4031. Bolt sleeve; 4032. Threaded part; 4033. Inner rotating groove; 4034. Engaging cavity; 4035. Inner tooth groove; 404. Quick-connect kit; 4041. Nut; 4042. Adapter; 4043. Inner rotating part; 4044. Magnetic strip; 4045. Type I magnetic block; 4046. Type II magnetic block; 4047. Raised strip; 4048. Sliding rod; 4049. Eccentric groove; 405. External toothed ring; 406. Flow groove; 407. Resistance-increasing groove. Detailed Implementation

[0036] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0037] The precast pile connector structure disclosed in this invention is mainly used in scenarios involving the docking and installation of precast piles.

[0038] Reference Figures 1 to 12 A precast pile connector structure for complex geological engineering includes a lower precast pile 1 and an upper precast pile 2 distributed on the top of the lower precast pile 1. Connectors 3 are pre-embedded at the ends of both the lower precast pile 1 and the upper precast pile 2. The connectors 3 include end plates 301 distributed at the ends of the lower precast pile 1 and the upper precast pile 2.

[0039] The top of the connector 3 is equipped with a quick-connect mechanism 4. The quick-connect mechanism 4 includes a sleeve plate 401 distributed between two end plates 301. The sleeve plate 401 has several evenly distributed rotating slots 402 vertically opened inside. A fixing kit 403 is rotatably installed inside each rotating slot 402.

[0040] The lower precast pile 1 and the upper precast pile 2 are quickly fixed by the quick connection of the connector 3 and the quick-connect mechanism 4.

[0041] In this embodiment: When the workers are producing the lower precast pile 1 and the upper precast pile 2, they need to pre-embed the connector 3 into the ends of the lower precast pile 1 and the upper precast pile 2 together. After the lower precast pile 1 and the upper precast pile 2 have dried and formed, the connector 3 will be fixed in place. At this time, the operator uses a crane to lower the lower precast pile 1 to the installation point for fixation (the top of the lower precast pile 1 is between 0.8M and 1.2M above the ground). Then, the operator holds the quick-connect mechanism 4 and installs it on the outside of the two connectors 3. Then, the upper precast pile 2 is suspended from the top of the lower precast pile 1 by the crane, straightened, and slowly lowered, causing the quick-connect mechanism 4 to connect quickly, completing the connection. After the lower precast pile 1 and the upper precast pile 2 are connected, the operator injects resin between the quick-connect mechanism 4 and the connector 3 using a glue gun to complete the connection. The connector 3 also includes a set of bolt rods 303 fixed on one side of each end plate 301. The quick-connect mechanism 4 is threaded to the bolt rods 303. A set of reinforcing ribs 302 is welded to one side of each end plate 301. Each set of reinforcing ribs 302 is pre-embedded in the interior of the lower precast pile 1 and the upper precast pile 2. The reinforcing ribs 302 increase the structural strength after the end plate 301 is fixed to the ends of the lower precast pile 1 and the upper precast pile 2. The bolt rods 303 enable the quick-connect mechanism 4 to be installed quickly.

[0042] Furthermore, it should be noted that: several evenly distributed flow grooves 406 are provided through the outer side of the sleeve plate 401. The operator injects resin between the quick-connect mechanism 4 and the connector 3 through a glue gun, and the resin can fill the gap through the flow grooves 406.

[0043] In the above scheme, considering the need to improve the speed and structural strength during the connection of precast piles, the specific operation is as follows.

[0044] Reference Figures 1 to 2 , Figures 4 to 11 In a preferred embodiment, the quick-connect mechanism 4 further includes a fixing kit 403 and a connector 3 threadedly connected. Another connector 3 is threadedly connected with a plurality of quick-connect kits 404, and the quick-connect kits 404 and the fixing kit 403 are engaged.

[0045] In this embodiment: When the workers are producing the lower precast pile 1 and the upper precast pile 2, they need to pre-embed the reinforcing ribs 302 on the side of the end plate 301 into the interior of the lower precast pile 1 and the upper precast pile 2. After the lower precast pile 1 and the upper precast pile 2 have dried and formed, the end plate 301 will be fixed together. At this time, the operator uses a crane to lower the lower precast pile 1 to the installation point and fix it. Then, the operator holds the sleeve plate 401 and aligns the fixing kit 403 inside the sleeve plate 401 with the bolt rods 30 on the side of the end plate 301. 3. Tighten the end plate 301 above the lower precast pile 1, and then use a crane to suspend the upper precast pile 2 to the top of the lower precast pile 1. At the same time, hold the quick-connect kit 404 and rotate it one by one to install it onto the end plate 301 at the bottom of the upper precast pile 2. Then straighten the upper precast pile 2 and slowly lower it, so that the quick-connect kit 404 and the fixing kit 403 are aligned and plugged in. After plugging in, the quick-connect kit 404 and the fixing kit 403 achieve one-way locking, completing the connection between the lower precast pile 1 and the upper precast pile 2.

[0046] Reference Figure 6 , Figure 10 and Figure 11 In a preferred embodiment, the fixing kit 403 includes a bolt sleeve 4031 rotatably mounted inside the rotating groove 402. Each bolt sleeve 4031 has a threaded portion 4032 at both ends of its inner wall. Several bolt sleeves 4031 are threadedly connected to a set of bolt rods 303 through the threaded portion 4032. The bolt sleeve 4031 also has an inner rotating groove 4033 at both ends of its inner wall, and a locking cavity 4034 is formed inside the bolt sleeve 4031.

[0047] In this embodiment: The operator holds the sleeve plate 401, aligns the bolt sleeve 4031 inside the sleeve plate 401 with the bolt rod 303 on the side of the end plate 301 and tightens it (end plate 301 above the lower precast pile 1), causing the threaded part 4032 on the inner wall of the bolt sleeve 4031 and the bolt rod 303 to be threadedly connected. Then, the upper precast pile 2 is suspended to the top of the lower precast pile 1 by a crane. At the same time, the operator holds the quick-connect kit 404 and rotates and installs the quick-connect kit 404 one by one onto the end plate 301 at the bottom of the upper precast pile 2. After that, it is straightened. The upper section of the precast pile 2 is slowly lowered, causing the quick-connect kit 404 and the bolt sleeve 4031 to align and be inserted. The top of the sleeve plate 401 is rotatably mounted with an external toothed ring 405. Each bolt sleeve 4031 has an internal toothed groove 4035 on its outer side. The external toothed ring 405 and the internal toothed groove 4035 are meshed together. When a bolt sleeve 4031 is tightened, it will drive the external toothed ring 405 to rotate. The rotating external toothed ring 405 will drive all the bolt sleeves 4031 to rotate through the internal toothed groove 4035, thereby achieving synchronous tightening.

[0048] Reference Figures 1 to 2 , Figures 7 to 10In a preferred embodiment, the quick-connect kit 404 includes a nut 4041 rotatably mounted on another set of bolt rods 303. Each nut 4041 has an adapter 4042 rotatably mounted at its end. The end of the adapter 4042 is surrounded by a plurality of inner spiral members 4043, which are helically matched with inner spiral grooves 4033. A magnetic strip 4044 is fixedly mounted on the outer side of the adapter 4042 close to the end of the nut 4041. A type of magnetic block 4045 is symmetrically installed at the end of 1. The magnetic strip 4044 and the type of magnetic block 4045 are attracted and attached. A type of magnetic block 4046 is also fixedly installed at the end of the nut 4041. The type of magnetic block 4046 is staggered between the two type of magnetic blocks 4045. A slide rod 4048 is longitudinally slidably installed on the bottom edge of the adapter 4042. An eccentric groove 4049 is opened on the top of the bolt rod 303. The slide rod 4048 is engaged inside the eccentric groove 4049.

[0049] In this embodiment: The operator holds the sleeve plate 401, aligns the bolt sleeve 4031 inside the sleeve plate 401 with the bolt rod 303 on the side of the end plate 301 (the end plate 301 above the lower precast pile 1), and tightens it, causing the threaded part 4032 on the inner wall of the bolt sleeve 4031 to be threadedly connected to the bolt rod 303. Then, the upper precast pile 2 is suspended to the top of the lower precast pile 1 by a crane. At the same time, the operator holds the nut 4041 and rotates it one by one to install it onto the end plate 301 at the bottom of the upper precast pile 2. After that, the upper precast pile 2 is straightened and slowly lowered, causing the adapter 4042 at the bottom of the nut 4041 and the bolt sleeve 4031 to be aligned and inserted. Before this, the operator needs to check the angular relationship between each adapter 4042 and the nut 4041, so that the adapter 4042 side is aligned with the bolt rod 3031. The magnetic strip 4044 on the surface and the type of magnetic block 4045 at the bottom of the nut 4041 are attracted to each other, ensuring the positional relationship between the inner rotating part 4043 and the inner rotating groove 4033 when they are connected. As the adapter 4042 is inserted into the bolt sleeve 4031, the inner rotating part 4043 at the bottom of the adapter 4042 will slide along the inside of the inner rotating groove 4033 until the inner rotating part 4043 is dislodged from the inner rotating groove 4033 and enters the engagement cavity 4034. During this process, as the inner rotating part 4043 slides along the inside of the inner rotating groove 4033, the adapter 4042 will also rotate around the nut 4041, causing the magnetic strip 4044 and the type of magnetic block 4045 to lose their attraction relationship until the inner rotating part 4043 is dislodged from the inner rotating groove 4033 and enters the engagement cavity 4034.

[0050] Specifically, the angle between the line connecting the second-class magnetic block 4046 and the first-class magnetic block 4045 and the center point of the adapter 4042 is greater than the angle of rotation of the inner rotating part 4043 within the inner rotating groove 4033. When the inner rotating part 4043 comes out of the inner rotating groove 4033, the magnetic strip 4044 will come close to the second-class magnetic block 4046 (but not in contact), and will be further driven by the magnetic attraction of the second-class magnetic block 4046 to rotate the adapter 4042 slightly (the magnetic strip 4044 contacts the second-class magnetic block 4046), causing the inner rotating part 4043 and the inner rotating groove 4033 to be misaligned, thus completing the vertical locking.

[0051] During this process, the slide rod 4048 located at the bottom of the adapter 4042 will move downwards due to its own weight and contact the top of the bolt rod 303. As the adapter 4042 rotates, the slide rod 4048, which rotates synchronously, will move synchronously along the top of the bolt rod 303 until the adapter 4042 rotates to its limit position. At this point, the bottom of the slide rod 4048 will contact and align with the eccentric groove 4049. Then, the slide rod 4048 will move downwards due to its own weight and insert into the interior of the eccentric groove 4049, preventing the adapter 4042 and the bolt rod 303 from rotating, thus completing the horizontal locking.

[0052] When the inner rotating part 4043 moves along the trajectory of the inner rotating groove 4033, the adapter 4042 rotates half a turn to ensure that the slide rod 4048 can be aligned with the eccentric groove 4049 when it is rotated to the limit position.

[0053] The magnetic strip 4044 has a protrusion 4047 in the middle. The magnetic strip 4044 is connected to a type of magnetic block 4045 by the protrusion 4047. When the magnetic strip 4044 and the type of magnetic block 4045 are fully aligned, there will be a feeling of sticking, which makes it convenient for operators to check the placement angle of the adapter 4042 in its initial state.

[0054] Preferably, the angle between the line connecting the second-class magnetic block 4046 and the first-class magnetic block 4045 and the center point of the adapter 4042 is greater than the angle of rotation of the inner rotating part 4043 within the inner rotating groove 4033 by five to ten degrees.

[0055] As can be further explained, several inner rotating parts 4043 can be provided as needed to improve the structural strength after locking. In addition, lubricating oil is provided inside the inner rotating groove 4033. After the inner rotating part 4043 is separated from the inner rotating groove 4033, the adapter 4042 can be easily rotated by the attraction force of the second type of magnetic block 4046.

[0056] Furthermore, it should be noted that both the nut 4041 and the bolt sleeve 4031 have resistance grooves 407 on their outer sides to facilitate workers to tighten the nut 4041 and bolt sleeve 4031 by hand.

[0057] Working principle: During use, when producing the lower precast pile 1 and the upper precast pile 2, the reinforcing ribs 302 on the side of the end plate 301 need to be pre-embedded into the interior of the lower precast pile 1 and the upper precast pile 2. After the lower precast pile 1 and the upper precast pile 2 have dried and formed, the end plate 301 will be fixed together. At this time, the operator uses a crane to lower the lower precast pile 1 to the installation point and fix it (the top of the lower precast pile 1 is between 0.8M and 1.2M above the ground). Then, the operator holds the sleeve plate 401, aligns the bolt sleeve 4031 inside the sleeve plate 401 with the bolt rod 303 on the side of the end plate 301 and tightens it (the end plate 301 above the lower precast pile 1). This causes the threaded part 4032 on the inner wall of the bolt sleeve 4031 and the bolt rod to be tightened. The 303 threaded connection is used. The upper precast pile 2 is then suspended from the top of the lower precast pile 1 using a crane. Simultaneously, the nut 4041 is held and rotated one by one onto the end plate 301 at the bottom of the upper precast pile 2. The upper precast pile 2 is then straightened and slowly lowered, aligning the adapter 4042 and bolt sleeve 4031 at the bottom of the nut 4041 and allowing them to be inserted. Before this, the operator needs to check the angular relationship between each adapter 4042 and nut 4041, ensuring that the magnetic strip 4044 on the side of the adapter 4042 and the magnetic block 4045 at the bottom of the nut 4041 are attracted, guaranteeing accurate positioning of the inner rotating part 4043 and the inner rotating groove 4033 when they align. As the adapter 4042 is inserted into the bolt sleeve 4031... The inner rotating part 4043 located at the bottom of the adapter 4042 slides along the inside of the inner rotating groove 4033 until it disengages from the groove and enters the engagement cavity 4034. During this process, as the inner rotating part 4043 slides along the groove, the adapter 4042 rotates around the nut 4041, causing the magnetic strip 4044 and the first-class magnetic block 4045 to lose their attraction. When the inner rotating part 4043 disengages from the groove and enters the engagement cavity 4034, the magnetic strip 4044 comes into contact with the second-class magnetic block 4046 (without contact) and is further driven by the magnetic attraction of the second-class magnetic block 4046 to rotate slightly. (Magnetic strip 4044 contacts the second-class magnetic block 4046), causing the inner rotating part 4043 and the inner rotating groove 4033 to misalign, causing the adapter 4042 and the bolt sleeve 4031 to be unable to move up and down, thus completing the locking. The upper end of the inner rotating part 4043 is flat, so it can fit with the inner top of the inner rotating groove 4033, increasing the force-bearing area and ensuring stability. After completing the connection between the lower precast pile 1 and the upper precast pile 2, the operator injects resin between the end plate 301 and the sleeve plate 401 through a glue gun, causing the resin to fill the entire gap along the flow groove 406, playing a role in corrosion prevention and fixation, thus being suitable for complex geological environments such as acid or alkalinity. The joint between the end plate 301 and the sleeve plate 401 can be welded as needed to complete the entire connection work.

[0058] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A prefabricated pile connector structure for complex geological engineering, comprising a lower section prefabricated pile (1) and an upper section prefabricated pile (2) distributed on the top of the lower section prefabricated pile (1), characterized in that, The ends of the lower precast pile (1) and the upper precast pile (2) are all pre-embedded with connectors (3), and the connectors (3) include end plates (301) distributed at the ends of the lower precast pile (1) and the upper precast pile (2). The top of the connector (3) is equipped with a quick-connect mechanism (4), which includes a sleeve plate (401) distributed between the two end plates (301). The sleeve plate (401) has several evenly distributed rotating slots (402) vertically opened inside, and a fixing kit (403) is rotatably installed inside each rotating slot (402). The connector (3) also includes a set of bolt rods (303) fixed on one side of each end plate (301). The connector (3) is threaded with several quick-connect fittings (404). The quick-connect kit (404) includes a nut (4041) rotatably mounted on another set of bolt rods (303). A magnetic strip (4044) is fixedly mounted on the outer side of the end of the nut (4041). A type of magnetic block (4045) is symmetrically mounted on the end of the nut (4041). The magnetic strip (4044) and the type of magnetic block (4045) are attracted and attached. A type of magnetic block (4046) is also fixedly mounted on the end of the nut (4041). The type of magnetic block (4046) is staggered between the two type of magnetic blocks (4045). The quick-connect mechanism (4) is threadedly connected to the bolt rod (303). The fixing kit (403) and the connector (3) are threaded together, and the quick-connect kit (404) and the fixing kit (403) are snap-fitted together. The fixing kit (403) includes a bolt sleeve (4031) rotatably installed inside the rotating groove (402). Each bolt sleeve (4031) has a threaded portion (4032) at both ends of its inner wall. Several bolt sleeves (4031) are threadedly connected to a set of bolt rods (303) through the threaded portion (4032). The bolt sleeve (4031) also has an inner rotating groove (4033) at both ends of its inner wall. The bolt sleeve (4031) has a locking cavity (4034) inside its interior. Each of the nuts (4041) has an adapter (4042) rotatably mounted at its end. The adapter (4042) has several inner rotating parts (4043) arranged around its end. The inner rotating parts (4043) and the inner rotating groove (4033) are spirally matched. The angle between the line connecting the second type of magnetic block (4046) and the first type of magnetic block (4045) and the center point of the adapter (4042) is greater than the angle of rotation of the inner rotating part (4043) in the inner rotating groove (4033). A slide rod (4048) is slidably mounted on the bottom of the adapter (4042). An eccentric groove (4049) is opened on the top of the bolt rod (303). The slide rod (4048) is engaged inside the eccentric groove (4049).

2. The precast pile connector structure for complex geological engineering according to claim 1, characterized in that, An external toothed ring (405) is rotatably mounted on the top of the sleeve (401), and an internal toothed groove (4035) is provided on the outer side of each bolt sleeve (4031). The external toothed ring (405) and the internal toothed groove (4035) are meshed together.

3. The precast pile connector structure for complex geological engineering according to claim 2, characterized in that, The outer side of the sleeve (401) is provided with a number of evenly distributed flow grooves (406).

4. The precast pile connector structure for complex geological engineering according to claim 3, characterized in that, The outer sides of both the nut (4041) and the bolt sleeve (4031) are provided with resistance grooves (407).

5. The precast pile connector structure for complex geological engineering according to claim 4, characterized in that, The magnetic strip (4044) has a protrusion (4047) in the middle, and the magnetic strip (4044) is engaged with the magnetic block (4045) through the protrusion (4047).

6. The precast pile connector structure for complex geological engineering according to claim 5, characterized in that, Each end plate (301) has a set of reinforcing ribs (302) welded to one side, and each set of reinforcing ribs (302) is pre-embedded in the interior of the lower precast pile (1) and the upper precast pile (2).

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