A connecting device and a concrete segment having the same.

Abstract

This invention relates to the field of engineering construction technology and discloses a connecting device and a concrete segment having the same, comprising: at least two connecting units, adjacent connecting units being detachably connected; each connecting unit comprising: a plug and a socket, the plug being adapted to engage with the socket of an adjacent connecting unit along a first direction; a prestressed member, one end of the prestressed member being connected to the plug and the other end to the socket, the socket storing preload by stretching the prestressed member to form a self-locking engagement with the plug. By providing at least two detachable connecting units, flexible assembly and disassembly between the connecting units are achieved; one end of the prestressed member is connected to the plug and the other end to the socket, the socket storing preload by stretching the prestressed member to form a self-locking engagement between the plug and the socket, ensuring both the tightness and firmness of the connection between the connecting units, and eliminating the need for traditional bolt connections, thus improving construction convenience.

Description

Technical Field

[0001] This invention relates to the field of engineering construction technology, specifically to a connecting device and a concrete segment having the same. Background Technology

[0002] Against the backdrop of the continuous and rapid development of wind power generation technology in the new energy field, concrete tower structures have been widely used in more and more wind power projects due to their significant advantages. Concrete towers have become an indispensable and important tower form in the current new energy wind power field, providing key support for the large-scale development of the wind power industry.

[0003] With the rapid iteration of concrete tower technology, the connection methods of tower segments, as the core assembly components in tower construction, are also showing a diversified development trend. Tower segments are the basic building blocks of concrete towers, and their assembly quality directly determines the overall quality and operational safety of the tower. Defects in assembly can easily lead to problems such as leakage. In related technologies, the arc-shaped or straight bolt connection methods used for concrete tower segments cannot effectively improve the overall load-bearing capacity of the entire tower ring; the bolt hole and through-hole operations require high precision and are difficult, requiring specialized personnel to apply bolt torque and tighten them, consuming a significant amount of manpower and time; during torque application, bolt washers may cause extrusion damage to the surrounding concrete, and with the passage of time, there is also the risk of nut loosening, affecting the stability of the tower structure. Summary of the Invention

[0004] This invention provides a connecting device and a concrete segment having the same, to solve the problems of low construction efficiency and poor construction effect of concrete towers in the prior art.

[0005] In a first aspect, the present invention provides a connecting device, comprising:

[0006] At least two connecting units, with adjacent connecting units being detachably connected;

[0007] Each connection unit includes:

[0008] A plug and a socket, wherein the plug is adapted to mate with the socket of an adjacent connection unit in a first direction;

[0009] The prestressed member has a plug connected to one end and a socket connected to the other end. The socket stores preload by stretching the prestressed member, so as to form a self-locking fit with the plug.

[0010] Beneficial effects: By setting at least two detachable connection units, flexible assembly and disassembly between the connection units are realized, which facilitates later maintenance or adjustment; one end of the prestressed member is connected to a plug and the other end to a socket. The socket can store preload by stretching the prestressed member, so that the plug and socket form a self-locking fit. This not only ensures the tightness and firmness of the connection between the connection units, but also eliminates the need to rely on traditional bolt connections, reducing the requirements for construction tools and personnel operating experience, and improving the convenience of construction.

[0011] In one alternative embodiment, the plug includes an insert portion and a plug base, and an extension portion connected between the insert portion and the plug base. In a plane perpendicular to the first direction, the cross-sectional area of ​​the insert portion is larger than the cross-sectional area of ​​the extension portion.

[0012] The insert is adapted to be inserted into the socket and form a limiting lock with the socket. The plug base has a connecting part at the end away from the insert, and the connecting part is fixedly connected to the end of the prestressed member.

[0013] Beneficial effects: The cross-sectional area of ​​the embedded part is larger than that of the extension part, so that it can form a reliable limiting lock with the socket after being inserted into the socket, effectively preventing the plug from accidentally falling out of the socket and improving the connection stability; the plug base is fixedly connected to the end of the prestressed member through the connecting part, ensuring that the tension of the prestressed member can be stably transmitted to the plug, thereby ensuring the effective role of the pre-tightening force in the connection structure. At the same time, the setting of the extension part can guide the embedded part to be accurately inserted into the socket, reducing the assembly difficulty.

[0014] In one alternative implementation, the socket includes:

[0015] The socket housing has an internal cavity for inserting a recessed part, and an opening is formed at one end of the socket housing located in the recessed cavity;

[0016] At least one limiting member is movably disposed in the opening. The limiting member includes a pivot portion and a limiting portion that rotates about the pivot portion. The limiting member has a blocking state and a limiting state. In the blocking state, the limiting member is adapted to at least partially block the opening. In the limiting state, the limiting portion is adapted to abut against one end of the insert portion toward the extension portion.

[0017] The elastic element elastically abuts against the limiting element and has a tendency to drive the limiting element to move towards the blocking state.

[0018] Beneficial effects: The recessed cavity of the socket housing provides a precise installation space for the plug insertion part, ensuring the fitting accuracy between the plug and the socket; the elastic element drives the limiting element to always tend to move towards the blocking state. When the plug is not inserted, the limiting element can partially block the opening to prevent impurities from entering the recessed cavity. During the plug insertion process, the insertion part pushes the limiting element to rotate to the limiting state, and the limiting part abuts against the end face of the insertion part to achieve self-locking. The whole process requires no additional operation, improving the automation level of the connection and the self-locking reliability.

[0019] In one alternative implementation, the socket further includes:

[0020] The first reset component has one end engaged with the limiting component and the other end slidably connected to the socket housing. By sliding the first reset component away from the socket housing, the first reset component causes the limiting component to compress the elastic component.

[0021] And / or, the second reset member, the socket is also provided with a mounting hole, the second reset member is connected to the mounting hole, the second reset member abuts against the limiting member, and the limiting member compresses the elastic member by the relative movement of the second reset member and the socket housing.

[0022] Beneficial effects: The first reset component can compress the elastic component by sliding the limiting component, and the second reset component can compress the elastic component by relative movement with the socket housing. The setting of the two reset components provides a convenient way to unlock the limiting component, so that the plug and socket can easily disengage from the self-locking state and realize the secondary disassembly of the connection unit. This solves the problem of difficult disassembly of traditional connection structures and facilitates the maintenance and replacement of components such as pipe segments in the later stage. At the same time, the reset components are simple to operate and do not require complicated tools, which reduces the difficulty of disassembly.

[0023] In one alternative implementation, the socket includes:

[0024] The cam is mounted on one side of the socket via a rotating shaft. A connecting plate is provided between the prestressed member and the socket. One end of the connecting plate abuts against the cam, and the other end abuts against the external structure. The cam is adapted to stretch the prestressed member by relative displacement with the connecting plate.

[0025] Beneficial effects: The cam and connecting plate mating structure can convert the rotational motion of the cam into the linear displacement of the connecting plate, thereby stabilizing the tension of the prestressed member and storing the preload; the magnitude of the preload can be adjusted by controlling the rotation angle of the cam to meet the preload requirements of the connection under different working conditions; compared with the traditional bolt torque application method, this structure does not require a dedicated person to perform complex torque control, making operation simpler and effectively shortening the construction time.

[0026] In one alternative embodiment, the connecting plate includes a base plate and an abutment portion adapted to abut a cam, and the base plate abuts against an external structure.

[0027] Beneficial effects: The abutting part of the connecting plate can form a stable contact with the cam, avoiding relative sliding between the cam and the connecting plate when the cam rotates, ensuring that the rotation of the cam can be efficiently converted into the tensile force of the prestressed component, and ensuring the stability of the preload storage; the base plate abuts against the external structure, providing a reliable support foundation for the connecting plate, preventing the socket from shifting during the tensioning of the prestressed component, avoiding preload loss or connection deviation due to socket shift, and further improving the accuracy of preload storage.

[0028] In one alternative embodiment, the limiting member further includes a protrusion that engages with the inner wall of the embedded cavity to give the limiting member a preset rotation angle range.

[0029] Beneficial effects: The protrusion of the limiting component engages with the inner wall of the embedded cavity, which can strictly limit the rotation angle range of the limiting component and prevent the limiting component from exceeding its working stroke due to excessive rotation, thus preventing it from switching to the blocking or limiting state normally. This structure can ensure that the limiting component always works within the preset range, preventing the insertion of the plug or the self-locking effect from being affected by the misalignment of the limiting component, thereby improving the stability of the limiting component's operation and the overall reliability of the self-locking structure.

[0030] In one alternative embodiment, the socket further includes a pull rod connected to a cam, which causes the cam to have a rotational tendency by actuating the pull rod.

[0031] Beneficial effects: The direct connection between the tie rod and the cam provides a convenient operating platform for construction personnel. Personnel can control the rotation of the cam by pulling the tie rod without directly contacting the cam, reducing the difficulty of operation. By adjusting the rotation angle of the cam by pulling the tie rod, the tension of the prestressed component can be easily controlled, thereby regulating the magnitude of the preload. The operation process is simple and easy to understand, making it easy for construction personnel to master quickly, effectively shortening the assembly time of the connection device and improving the overall construction efficiency.

[0032] In one alternative embodiment, the socket further includes a locking cover that closes to one side of the socket housing adjacent to the recessed cavity opening to seal the socket housing.

[0033] Beneficial effects: After the locking cover is closed onto the socket housing, it can seal the embedded cavity and internal components such as limiting parts and elastic parts, preventing external dust, moisture, impurities, etc. from entering the socket, avoiding contamination, corrosion or damage to internal components, and extending the service life of the socket; at the same time, the locking cover can also play an auxiliary role in fixing the internal components, preventing the limiting parts and elastic parts from loosening during long-term use or in a vibrating environment, and ensuring the stable operation of the socket's self-locking function.

[0034] Secondly, the present invention also provides a concrete segment having the above-described connecting device, comprising:

[0035] Segmentation;

[0036] The mounting section, located inside the segment, includes a duct and a mounting groove; a circumferential through-hole is provided inside the segment, the curvature of which matches the curvature of the prestressed member; at least one end face of the segment is provided with a mounting groove, which is suitable for mounting a socket, and a base plate abuts against the inner wall of the mounting groove. By rotating a cam, the socket and the base plate are relatively displaced.

[0037] Beneficial effects: The circumferentially penetrating ducts inside the segments, with their curvature adapted to the prestressed components, allow the prestressed components to be smoothly arranged within the segments and form a closed loop, significantly improving the overall load-bearing capacity and structural stability of the tower. The mounting slot provides dedicated installation space for the sockets, and the bottom plate of the connecting plate abuts against the inner wall of the mounting slot, preventing the sockets from shifting during operation and ensuring the installation accuracy of the connecting device. Combined with the advantages of the detachable connecting device and controllable pre-tightening force, the segment assembly time can be significantly shortened, the amount of internal reinforcement in the segments can be reduced to save material costs, and the segments can be disassembled a second time through the connecting device, providing convenience for later tower operation and segment replacement. Attached Figure Description

[0038] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0039] Figure 1 This is a schematic diagram of the connection device of the present invention;

[0040] Figure 2 This is a schematic diagram before the plug and socket are mated.

[0041] Figure 3 This is a schematic diagram showing the plug and socket after they are inserted.

[0042] Figure 4 A schematic diagram of the internal structure after the plug and socket are embedded;

[0043] Figure 5 This is a diagram showing the process before the lever is pulled.

[0044] Figure 6 This is a diagram showing the effect after the lever is pulled.

[0045] Figure 7 This is a schematic diagram of the mating structure between the first and second reset components and the socket;

[0046] Figure 8 This is a schematic diagram of the limiting component;

[0047] Figure 9This is a schematic diagram showing the contact between the cam and the connecting plate.

[0048] Figure 10 This is a schematic diagram showing the connection between the concrete segments and the connecting device.

[0049] Explanation of reference numerals in the attached figures:

[0050] 1. Plug; 11. Insertion part; 12. Plug base; 13. Extension part; 2. Socket; 21. Socket housing; 22. Insertion cavity; 221. Opening part; 23. Elastic element; 24. Limiting element; 241. Protrusion; 242. Limiting part; 243. Rotating shaft part; 25. Mounting hole; 26. First reset element; 27. Second reset element; 28. Cam; 29. ​​Connecting plate; 291. Abutment part; 292. Base plate; 3. Prestressed component; 4. Segment; 41. Mounting part. Detailed Implementation

[0051] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. 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.

[0052] The following is combined with Figures 1 to 10 The following describes embodiments of the present invention.

[0053] According to an embodiment of the present invention, in one aspect, a connecting device is provided, comprising: at least two connecting units, wherein adjacent connecting units are detachably connected; each connecting unit comprises:

[0054] The plug 1 and socket 2 are adapted to engage with the socket 2 of the adjacent connecting unit in a first direction; the prestressed member 3 is connected to the plug 1 at one end and to the socket 2 at the other end, and the socket 2 stores preload by stretching the prestressed member 3 so as to form a self-locking engagement with the plug 1.

[0055] By setting two or more freely detachable connection units, flexible assembly and rapid disassembly of the connection units are achieved, simplifying the workflow for later maintenance or layout adjustments. Specifically, the prestressed member 3 uses a plug 1 connected to one end and a socket 2 fixed to the other. When axial tension is applied to the prestressed member 3, the socket 2 can simultaneously generate displacement to store the required preload. This allows the plug 1 and socket 2 to automatically form a stable self-locking fit, ensuring not only a tight connection and structural robustness between the connection units but also eliminating reliance on traditional bolt connections. This significantly reduces the requirements for specialized construction tools and the operational experience of construction personnel, fundamentally improving the convenience and efficiency of the entire construction process.

[0056] In one embodiment, the plug 1 includes an insert portion 11 and a plug base 12, and an extension portion 13 connected between the insert portion 11 and the plug base 12. In a plane perpendicular to the first direction, the cross-sectional area of ​​the insert portion 11 is larger than the cross-sectional area of ​​the extension portion 13. The insert portion 11 is adapted to be inserted into the socket 2 and form a limiting lock with the socket 2. The end of the plug base 12 away from the insert portion 11 is provided with a connecting portion, which is fixedly connected to the end of the prestressed member 3.

[0057] The performance of the connecting device has been further optimized. The larger cross-sectional area of ​​the insert 11, when inserted into the socket 2, provides a more reliable locking effect, effectively resisting external forces from all directions and preventing loosening or displacement of the connecting unit during use. The extension 13 provides excellent guidance when the insert 11 is inserted into the socket 2, ensuring accurate entry of the insert 11 into the socket 2, thus improving assembly precision and efficiency. Specifically, the insert 11 can be a hexagonal protrusion 241.

[0058] Furthermore, this connection method offers better adaptability. Under different working environments and conditions, even when affected by factors such as vibration, impact, or temperature changes, the self-locking fit between the plug 1 and the socket 2, as well as the connection between the connecting part and the prestressed component 3, remains stable and will not easily loosen or fail, thereby improving the reliability and stability of the connection device.

[0059] In one embodiment, the socket 2 includes: a socket housing 21, the socket housing 21 having an insertion cavity 22 for the insertion portion 11 to be inserted into, and the socket housing 21 forming an opening 221 at one end of the insertion cavity 22; at least one limiting member 24, the limiting member 24 being movably disposed in the opening 221, the limiting member 24 including a pivot portion 243 and a limiting portion 242 rotatable about the pivot portion 243; the limiting member 24 having a blocking state and a limiting state, in the blocking state, the limiting member 24 being adapted to at least partially block the opening 221, and in the limiting state, the limiting portion 242 being adapted to abut against one end of the insertion portion 11 toward the extension portion 13; and an elastic member 23 elastically abutting against the limiting member 24 and having a tendency to drive the limiting member 24 to move toward the blocking state.

[0060] The design ensures the reliability and automation of the connection between plug 1 and socket 2. When plug 1 is not inserted, the elastic element 23 drives the limiting element 24 to be in a blocking state, effectively protecting the internal structure of the insertion cavity 22 and preventing foreign objects from entering and affecting subsequent connections. When plug 1 is inserted, the insertion part 11 pushes the limiting element 24 to rotate around the rotating shaft 243 to the limiting state. The limiting part 242 abuts against the end of the insertion part 11 facing the extension part 13, realizing automatic locking of plug 1 and socket 2 without additional manual operation, greatly improving connection efficiency. At the same time, this movable setting of the limiting element 24 makes the insertion and removal process of plug 1 smoother, reducing connection failures caused by jamming or jamming. In addition, the design of the socket housing 21 provides precise positioning and stable support for the insertion part 11, ensuring the accuracy and stability of the connection.

[0061] In one embodiment, the socket 2 further includes: a first reset member 26, one end of which is engaged with the limiting member 24, and the other end is slidably connected to the socket housing 21. By sliding the first reset member 26 away from the socket housing 21, the first reset member 26 causes the limiting member 24 to compress the elastic member 23.

[0062] And / or, the second reset member 27, the socket 2 is also provided with a mounting hole 25, the second reset member 27 is connected to the mounting hole 25, the second reset member 27 abuts against the limiting member 24, and through the relative movement of the second reset member 27 and the socket housing 21, the limiting member 24 compresses the elastic member 23.

[0063] The first reset member 26 and the second reset member 27 provide a safety mechanism for unlocking the connection device. Furthermore, both reset members are relatively simple to operate and do not require highly skilled personnel. The sliding operation of the first reset member 26 and the relative movement of the second reset member 27 with the socket housing 21 can both be completed without the aid of complex tools, reducing construction and time costs.

[0064] Specifically, the first reset member 26 is a tension plate that can drive the limit member 24 to move, and the second reset member 27 is a bolt that rotates to abut against the limit member 24 and cause the limit member 24 to move.

[0065] In one embodiment, the socket 2 includes a cam 28, which is rotatably mounted on one side of the socket 2 via a rotating shaft. A connecting plate 29 is provided between the prestressed member 3 and the socket 2. One end of the connecting plate 29 abuts against the cam 28, and the other end abuts against the external structure. The cam 28 is adapted to stretch the prestressed member 3 by undergoing relative displacement with the connecting plate 29.

[0066] The cam 28, in conjunction with the connecting plate 29, stretches the prestressed member 3, exhibiting excellent adjustability and repeatability. During actual construction, if the prestressing force needs to be adjusted multiple times according to different project requirements, the construction personnel can easily fine-tune the stretching degree of the prestressed member 3 by simply operating the cam 28 again and changing its rotation angle, thereby achieving precise control of the prestressing force.

[0067] Furthermore, the mating structure between cam 28 and connecting plate 29 results in low maintenance costs during long-term use. Due to its relatively simple structure and fewer components, the probability of failure is also relatively low. Even if a component malfunctions, it is easy to quickly locate and replace, reducing equipment repair time and costs. From a safety perspective, this connection device design also has significant advantages. The self-locking fit between plug 1 and socket 2, and the way the prestressed member 3 stores preload, ensure that the connection device maintains a stable connection even under significant external forces.

[0068] In one embodiment, the connecting plate 29 includes a base plate 292 and an abutment portion 291. The abutment portion 291 is adapted to abut against the cam 28, and the base plate 292 abuts against the external structure. This further optimizes the fit between the cam 28 and the connecting plate 29. The abutment portion 291 against the cam 28 accurately transmits the rotational force of the cam 28 to the connecting plate 29, making the linear displacement of the connecting plate 29 more stable and precise. The reliable abutment between the base plate 292 and the external structure provides a solid foundation for the entire force transmission process, ensuring a smooth and orderly process for the tensioning of the prestressed member 3.

[0069] In one embodiment, the limiting member 24 further includes a protrusion 241, which engages with the inner wall of the embedding cavity 22 to give the limiting member 24 a preset rotation angle range.

[0070] The protrusion 241 engages with the inner wall of the embedded cavity 22, effectively buffering the impact of external forces on the limiting member 24 and preventing it from exceeding the preset rotation angle range due to accidental external impacts, thus further ensuring the stability of the connection between the plug 1 and the socket 2. Moreover, this engaging structure is simple yet practical, easy to implement during manufacturing, reducing production costs and manufacturing difficulty. Simultaneously, it facilitates quick assessment of the limiting member 24's condition during routine maintenance and inspection, improving maintenance efficiency.

[0071] In one embodiment, the socket 2 also includes a pull rod connected to the cam 28. By moving the pull rod, the cam 28 tends to rotate. Using the pull rod to control the rotation of the cam 28 provides good feedback. During the process of moving the pull rod, the construction personnel can clearly perceive the rotation of the cam 28 and the tension state of the prestressed member 3 by hand, thereby controlling the magnitude of the preload more accurately and further improving the quality and stability of the connection device assembly.

[0072] Furthermore, the socket 2 also includes a locking cover, which closes on one side of the socket housing 21 adjacent to the opening of the recessed cavity 22 to seal the socket housing 21. After the locking cover closes on the socket housing 21, it can seal the recessed cavity 22 and internal components such as the limiting member 24 and the elastic member 23, preventing external dust, moisture, impurities, etc. from entering the socket 2, avoiding contamination, corrosion, or damage to internal components, and extending the service life of the socket 2; at the same time, the locking cover can also play an auxiliary role in fixing the internal components, preventing the limiting member 24, the elastic member 23, etc. from loosening during long-term use or in a vibrating environment, and ensuring the stable operation of the self-locking function of the socket 2.

[0073] According to an embodiment of the present invention, another aspect provides a concrete segment 4 having the above-described connecting device, comprising: a segment 4; an installation part 41 disposed within the segment 4, including a channel and an installation groove; a circumferential through channel being provided inside the segment 4, the curvature of the channel being adapted to the curvature of the prestressed member 3; an installation groove being provided on at least one end face of the segment 4, the installation groove being adapted to install a socket 2, a base plate 292 abutting against the inner wall of the installation groove, and by rotating a cam 28, the socket 2 and the base plate 292 are relatively displaced.

[0074] The ducts inside segment 4 provide an ideal path for the arrangement of prestressed members 3, ensuring that the prestress can be evenly distributed in the structure of segment 4, thereby better exerting its role in enhancing structural performance. When the prestressed members 3 are arranged along the ducts and form a closed loop, segment 4 can more evenly distribute stress when subjected to various loads, reducing local stress concentration and further improving the overall safety and reliability of the tower.

[0075] The mounting slot not only facilitates the installation of socket 2, but also allows for precise adjustment of the preload of the connecting device by rotating cam 28 to adjust the relative displacement between socket 2 and base plate 292 after socket 2 is installed. This adjustable preload design enables the connecting device to adapt to different working conditions and load requirements. Furthermore, this design of the concrete segment 4 offers excellent maintainability. Since the connecting device is detachable, construction personnel can easily remove it from the segment 4 for repair or replacement when segment 4 or the connecting device malfunctions or needs replacement. This significantly reduces maintenance time and costs, improving the service life and economic efficiency of the entire tower structure.

[0076] Through the coordinated operation of the aforementioned components, the prestressed member 3 can be rationally arranged within the segment 4, and the socket 2 can be stably installed. When multiple segments 4 are spliced ​​together, the connecting units within adjacent segments 4 are connected through the cooperation of the plug 1 and the socket 2. First, the plug 1 is accurately inserted into the embedded cavity 22 of the socket 2 on the adjacent segment 4. During the insertion process, the embedded part 11 pushes the limiting member 24 to rotate from the blocking state to the limiting state. The limiting part 242 abuts against the end of the embedded part 11 facing the extension part 13, realizing the self-locking cooperation between the plug 1 and the socket 2, ensuring the tightness of the connection.

[0077] Then, by pulling the lever, the rotation of cam 28 is converted into linear displacement of connecting plate 29 due to the contact between cam 28 and connecting plate 29, thereby stretching prestressed member 3 and storing prestressing force in prestressed member 3. The magnitude of the prestressing force can be precisely adjusted by controlling the rotation angle of cam 28 according to the actual working conditions to meet different connection requirements.

[0078] After the segments 4 are spliced, the entire connecting device can effectively connect the segments 4 together to form a stable overall structure. This connection method not only avoids the problems of difficult and time-consuming hole-to-hole operations in traditional bolt connections, but also solves the potential risks of extrusion damage to the surrounding concrete and loosening of nuts during bolt torque application.

[0079] Meanwhile, when maintenance or replacement of the segment 4 is required, the limiting member 24 can be compressed by the elastic member 23 through the first reset member 26 or the second reset member 27, releasing the self-locking state of the plug 1 and the socket 2, and realizing the secondary disassembly of the connection unit. The operation process is simple and convenient, requiring no complicated tools, which greatly improves the efficiency of construction and maintenance. Moreover, the circumferential through-holes inside the segment 4 with an arc adapted to the prestressed member 3 enable the prestressed member 3 to form a closed loop, improving the overall load-bearing capacity and structural stability of the tower; the matching design of the mounting groove and the socket 2 ensures the accuracy and stability of the socket 2 installation and prevents it from shifting during operation.

[0080] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A connecting device, characterized in that, include: At least two connecting units, with two adjacent connecting units being detachably connected; Each of the connection units includes: A plug (1) and a socket (2), the plug (1) being adapted to engage with the socket (2) of an adjacent connecting unit along a first direction; A prestressed member (3) is connected to the plug (1) at one end and to the socket (2) at the other end. The socket (2) stores prestress by stretching the prestressed member (3) so as to form a self-locking fit with the plug (1). The socket (2) includes a cam (28), which is rotatably mounted on one side of the socket (2) via a rotating shaft. A connecting plate (29) is provided between the prestressed member (3) and the socket (2). One end of the connecting plate (29) abuts against the cam (28), and the other end abuts against the external structure. The cam (28) is adapted to stretch the prestressed member (3) by relative displacement with the connecting plate (29). The connecting plate (29) includes a base plate (292) and an abutment portion (291), the abutment portion (291) being adapted to abut the cam (28), and the base plate (292) abutting against an external structure; The socket (2) also includes a pull rod connected to the cam (28), and the cam (28) has a rotational tendency by moving the pull rod.

2. The connecting device according to claim 1, characterized in that, The plug (1) includes an insert (11) and a plug base (12) and an extension (13) connected between the insert (11) and the plug base (12). In a plane perpendicular to the first direction, the cross-sectional area of ​​the insert (11) is larger than the cross-sectional area of ​​the extension (13). The embedding part (11) is adapted to be inserted into the socket (2) and form a limiting lock with the socket (2). The plug base (12) has a connecting part at one end away from the embedding part (11), and the connecting part is fixedly connected to the end of the prestressed member (3).

3. The connecting device according to claim 2, characterized in that, The socket (2) includes: The socket housing (21) has an embedded cavity (22) inside for the embedded part (11) to be embedded in, and an opening (221) is formed at one end of the socket housing (21) located in the embedded cavity (22). At least one limiting member (24) is movably disposed in the opening (221). The limiting member (24) includes a pivot portion (243) and a limiting portion (242) that rotates about the pivot portion (243). The limiting member (24) has a blocking state and a limiting state. In the blocking state, the limiting member (24) is adapted to at least partially block the opening (221). In the limiting state, the limiting portion (242) is adapted to abut against one end of the embedded portion (11) toward the extension portion (13). The elastic element (23) elastically abuts against the limiting element (24) and has a tendency to drive the limiting element (24) to move toward the blocking state.

4. The connecting device according to claim 3, characterized in that, The socket (2) also includes: The first reset member (26) has one end engaged with the limiting member (24) and the other end slidably connected to the socket housing (21). The first reset member (26) slides away from the socket housing (21), and the first reset member (26) drives the limiting member (24) to compress the elastic member (23). And / or, the second reset member (27), the socket (2) is also provided with a mounting hole (25), the second reset member (27) is connected to the mounting hole (25), the second reset member (27) abuts against the limiting member (24), and the limiting member (24) compresses the elastic member (23) by the relative movement of the second reset member (27) and the socket housing (21).

5. The connecting device according to claim 3, characterized in that, The limiting member (24) also includes a protrusion (241), which engages with the inner wall of the embedded cavity (22) so that the limiting member (24) has a preset rotation angle range.

6. The connecting device according to claim 3, characterized in that, The socket (2) also includes a locking cover that covers one side of the socket housing (21) adjacent to the opening of the embedded cavity (22) to close the socket housing (21).

7. A concrete segment comprising the connecting device according to any one of claims 1 to 6, characterized in that, include: Segment (4); The mounting part (41) is disposed in the segment (4) and includes a channel and a mounting groove; the segment (4) has a circumferential through channel inside, the curvature of the channel is adapted to the curvature of the prestressed member (3); the segment (4) has a mounting groove on at least one end face, the mounting groove is suitable for mounting a socket (2), the base plate (292) abuts against the inner wall of the mounting groove, and by rotating the cam (28), the socket (2) and the base plate (292) are relatively displaced.

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