Connection assembly and prefabricated component

Abstract

This invention relates to a connecting assembly and a prefabricated component, comprising a first sleeve, a second sleeve, an insert rod, and a connecting sleeve. The second sleeve includes a cylindrical limiting portion and a cylindrical extending portion connected to each other, with a limiting step between the cylindrical limiting portion and the cylindrical extending portion. The limiting step includes a first abutting surface and a second abutting surface with a height difference. The connecting sleeve includes a connecting portion and an elastic portion connected to each other. The elastic portion includes multiple spring pieces that can elastically contract into the second sleeve and elastically expand to abut against the first abutting surface or the second abutting surface. A first stress-relieving groove is formed on the outer peripheral wall of the elastic portion. When the insert rod is subjected to a certain pulling force, the elastic portion can break along the first stress-relieving groove. After breaking, the groove wall of the first stress-relieving groove forms a guide slope, and the broken portion of the elastic portion forms a snap-fit ​​piece. The guide slope is used to guide the snap-fit ​​piece to slide relative to the end away from the second sleeve towards the axis of the connecting sleeve.

Description

Technical Field

[0001] This invention relates to the field of prefabricated component connection technology, and in particular to a connection assembly and a prefabricated component. Background Technology

[0002] With the development of precast component connection technology, a rapid connection technology for precast components has emerged. This technology typically involves pre-embedded sleeves at the connection point of two precast components, and the connection is achieved by locking the two pre-embedded sleeves with inserts and elastic elements. However, existing connection components are complex in structure, cumbersome to assemble, and have inconvenient snap-fit ​​methods. Furthermore, in practical use, multiple connection components generally need to be mated together. During the mating process, assembly tolerances can easily lead to misalignment within some connection components, making it difficult for some spring clips to effectively abut against the inner wall of the pre-embedded sleeve. This results in some connection components failing to perform their connection function, and in severe cases, it can even damage the internal structure of the connection component, causing the spring clips to break due to excessive compressive force. Consequently, the connection cannot provide sufficient strength for the two precast components, easily leading to loosening or even separation of the two connected precast components. Summary of the Invention

[0003] Therefore, it is necessary to provide a connection component and a prefabricated component.

[0004] A connecting assembly includes a first sleeve, a second sleeve, a plug rod, and a connecting sleeve. The second sleeve includes a cylindrical limiting portion and a cylindrical extending portion connected to each other. The inner diameter of the cylindrical limiting portion is smaller than the inner diameter of the cylindrical extending portion. A limiting step is provided between the cylindrical limiting portion and the cylindrical extending portion. The limiting step includes a first abutting surface and a second abutting surface with a height difference. The second abutting surface is located on the inner periphery of the first abutting surface and is located on the side of the first abutting surface that is relatively closer to the first sleeve.

[0005] The connecting sleeve includes a connecting part and an elastic part that are connected to each other. The connecting part is fixedly connected to one end of the insert rod, and the other end of the insert rod is fixedly connected to the first sleeve. The connecting sleeve can be inserted into the second sleeve together with the insert rod. The elastic part includes a plurality of spring pieces. The plurality of spring pieces are arranged in a circumferential manner, and there is a gap between two adjacent spring pieces. The plurality of spring pieces can elastically contract to enter the second sleeve, and can elastically expand to abut against the first abutment surface or the second abutment surface.

[0006] The outer peripheral wall of the elastic part is provided with a first stress relief groove. The first stress relief groove is located on the side of the spring piece that is relatively close to the connecting part. When the insert rod is subjected to a certain pulling force, the elastic part can break along the first stress relief groove. After breaking, the groove wall of the first stress relief groove forms a guide slope. The broken part of the elastic part forms a snap-fit ​​piece. The guide slope is used to guide the snap-fit ​​piece to slide towards the axis of the connecting sleeve at the end that is relatively away from the second sleeve.

[0007] With this design, the connecting component structure provided by the present invention has a small number of structural parts, is easy to assemble, has a simple snap-fit ​​method, and is widely applicable. When multiple connecting components are mated together, the elastic part can elastically contract and follow the insertion rod into the cylindrical limiting part. The elastic part of some connecting components can abut against the first abutment surface. When some connecting components are misaligned due to the accumulation of tolerances caused by assembly, the height between the first abutment surface and the second abutment surface can still allow the elastic part of that part of the connecting component to abut against the relatively inner second abutment surface. This ensures that each connecting component can achieve a reliable connection effect, reduces or avoids the risk of misalignment of some connecting components leading to breakage and failure of the elastic part, and ensures the connection strength and reliability between the two prefabricated components. Furthermore, the first stress relief groove on the outer peripheral wall of the elastic part reduces the local thickness of the spring piece and increases the deformation of the spring piece at the first stress relief groove. Since the first stress relief groove is located on the side of the spring piece relatively close to the connecting part, the shrinkage force required when the spring piece shrinks is smaller, which facilitates the spring piece passing through the cylindrical limiting part. When the spring piece is subjected to a compressive force exceeding the limit value at the first stress relief groove, the snap-fit ​​piece can break along the first stress relief groove and abut against the insert rod, avoiding the crack propagation when the spring piece breaks and affecting the overall strength of the connecting sleeve. Moreover, the fracture can be used in reverse to improve the connection strength, further ensuring the connection reliability of the connecting component.

[0008] In one embodiment, the first unloading groove connects two adjacent gaps.

[0009] This design increases the length of the first stress relief groove, further increasing the deformation of the spring piece at the first stress relief groove, reducing the insertion force of the insertion rod, and facilitating the breakage of the snap-fit ​​piece along the first stress relief groove.

[0010] In one embodiment, each of the spring pieces has multiple first stress relief grooves arranged in a circumferential manner, and the first stress relief grooves penetrate the inner wall and outer wall of the elastic part.

[0011] This design further reduces the thickness of the spring at the first unloading groove, making it easier for the snap-fit ​​piece to break.

[0012] In one embodiment, the first stress relief groove is wavy or arc-shaped in the circumferential direction of the spring.

[0013] With this configuration, the wave-shaped or arc-shaped first stress relief groove can guide the end of the snap-fit ​​piece that is relatively far from the cylindrical limiting part to slide towards the axis of the connecting sleeve, while also preventing the end of the snap-fit ​​piece that is relatively far from the cylindrical limiting part from sliding along the circumferential direction of the connecting sleeve.

[0014] In one embodiment, the bottom of the first stress relief groove is provided with a through hole, which can penetrate the inner wall and the outer wall of the elastic part.

[0015] This design weakens the connection strength of the spring at the first unloading groove, making it easier for the spring to break at the first unloading groove.

[0016] In one embodiment, the inner peripheral wall of the elastic part is provided with a second stress relief groove, the extension lines of the first stress relief groove and the second stress relief groove are on the same straight line, and the elastic part also includes a connecting rib, the first stress relief groove and the second stress relief groove are separated by the connecting rib.

[0017] This design further compresses the thickness of the spring piece at the second unloading groove by opening the second unloading groove. At the same time, the second unloading groove can also guide the snap-fit ​​piece after it breaks, so that the snap-fit ​​piece can quickly abut against the insert rod.

[0018] In one embodiment, the first unloading groove and the second unloading groove correspond one-to-one.

[0019] This design further reduces the thickness of the connecting rib, and after the spring is disconnected along the first unloading groove, the first unloading groove and the second unloading groove can be connected to increase the flatness of the guide slope, which is conducive to the simultaneous contact of multiple springs with the insert rod, and increases the stability of the connection between the two prefabricated components.

[0020] In one embodiment, the bottom of the second stress relief groove is designed with a pointed shape.

[0021] This design, without affecting the retraction of the spring, makes the bottom of the second unloading groove a sharp corner, which helps to accelerate the breakage of the spring along the first unloading groove and further increases the flatness of the guide slope.

[0022] In one embodiment, the thickness of the spring is 1.92-2.02 mm, and the depth of the first stress relief groove is 1.0-1.2 mm; when the spring is subjected to a compressive force of at least 7.5 T, the spring can break along the first stress relief groove.

[0023] With this configuration, the connecting sleeve using this spring piece can ensure that the first sleeve, the insert rod, and the connecting sleeve, as well as the spring piece at the other end of the prefabricated component, will not break during contraction. It can also ensure that the spring piece can quickly disconnect along the first stress relief groove when the compressive force reaches its limit.

[0024] In one embodiment, the insertion rod includes a guide portion located at the end of the insertion rod relatively away from the first sleeve. The connecting sleeve has an insertion hole, and the guide portion can pass through the insertion hole and extend out of the connecting sleeve. The outer diameter of the guide portion relatively close to the first sleeve is larger than the outer diameter of the guide portion relatively far from the first sleeve.

[0025] With this design, when the insert rod is inserted into the cylindrical limiting part, the guide part can guide the central axis of the insert rod to align with the central axis of the cylindrical limiting part, so that the insert rod can be smoothly inserted into the cylindrical limiting part. The adjustment process of the first sleeve and the second sleeve does not require manual intervention, which reduces the operation risk during manual adjustment and also ensures the insertion efficiency.

[0026] In one embodiment, the guide portion is conical, hemispherical, or frustum-shaped.

[0027] This design makes it easy to process conical, hemispherical, and frustum-shaped guide sections, and the outer diameter of the guide section varies evenly along its own axial direction, which helps to improve the guiding effect.

[0028] In one embodiment, the outer peripheral wall of the guide portion, which is relatively close to one end of the first sleeve, is fitted against the inner wall of the insertion hole.

[0029] With this design, the position between the guide and the inner wall of the insertion hole is relatively fixed, making it less prone to shaking and improving the overall integrity of the connection between the insertion rod and the connecting sleeve.

[0030] In one embodiment, the insert further includes a first ramp connected to the end of the guide portion that is relatively close to the first sleeve. The outer diameter of the first ramp gradually decreases from the end away from the guide portion to the end close to the guide portion, and there is a smooth transition between the first ramp and the guide portion.

[0031] With this design, the first slope can evenly transfer the pressure on the guide to other parts of the insert rod, preventing the insert rod from being damaged by impact due to large local pressure at the guide. The smooth transition at the connection between the first slope and the guide can also reduce stress concentration at the end of the guide that is relatively close to the first sleeve.

[0032] In one embodiment, the connecting sleeve includes a stop portion connected to one end of the connecting portion that is relatively far from the elastic portion, and the stop portion protrudes from the inner wall of the connecting sleeve. The stop portion is used to stop the connecting sleeve when it is installed to a preset position of the insertion rod, and the insertion hole is located in the middle of the stop portion.

[0033] This design, with the stop section blocking the connecting sleeve and limiting the installation position of the connecting sleeve, ensures that the connecting sleeve is installed in the preset position and fixed. At the same time, the stop section can also indicate that the installation is complete, increasing the practicality of the connecting component.

[0034] In one embodiment, the inner surface of the stop portion matches the shape of the first inclined slope.

[0035] This design ensures that the inner surface of the stop part fully fits the first inclined slope, improving the stopping effect of the stop part and increasing the overall integrity of the connection between the insert rod and the connecting sleeve.

[0036] In one embodiment, the insertion rod further includes a first fixing part, a large-diameter part, a small-diameter part, and a second fixing part connected in sequence. The first fixing part extends into and is fixedly connected to the first sleeve. The large-diameter part corresponds to the cylindrical limiting part, and the small-diameter part corresponds to the elastic part. The second fixing part is fixedly connected to the connecting part. The end of the second fixing part that is relatively away from the small-diameter part is connected to the guide part, and the outer diameter of the second fixing part is larger than the outer diameter of the guide part.

[0037] The large-diameter portion and the small-diameter portion can form a clearance step, which is used to make way for the elastic portion when it elastically contracts.

[0038] This configuration, with the large-diameter portion corresponding to the cylindrical limiting portion, helps improve the shear resistance of the insertion rod. The step makes way for the elastic portion, which allows the elastic portion to deform fully, reducing the insertion force required to deform the elastic portion and enabling the insertion rod to extend into the preset position.

[0039] In one embodiment, the larger diameter portion is provided with a second inclined slope at the end relatively close to the smaller diameter portion, and the second inclined slope is used for the elastic portion to abut when the insert rod drives the connecting sleeve through the cylindrical limiting portion.

[0040] With this design, the second slope can prevent further deformation of the elastic part, thus avoiding uneven deformation and breakage of the elastic part, which would affect the connection of the precast components.

[0041] In one embodiment, a chamfer is provided between the large-diameter portion and the small-diameter portion.

[0042] This design can reduce shear failure caused by stress concentration between the large-diameter and small-diameter sections.

[0043] A prefabricated component, wherein one end of the prefabricated component is provided with a first sleeve, a plug rod and a connecting sleeve as described above, and the other end is provided with a second sleeve as described above, and two adjacent prefabricated components are connected to each other by the connecting components described above.

[0044] With this configuration, two adjacent prefabricated components can be effectively connected through the connecting components, and the connection strength is reliable, making it less likely for the connection to fail. Attached Figure Description

[0045] Figure 1 This is a schematic diagram of the structure of the connecting component in one embodiment of the present invention;

[0046] Figure 2 for Figure 1 Cross-sectional view of the connecting component with section line AA;

[0047] Figure 3 for Figure 2 A magnified view of the connecting component at point X;

[0048] Figure 4 for Figure 1 Front view of the second sleeve;

[0049] Figure 5 for Figure 4 Cross-sectional view of the second sleeve with BB as the section line;

[0050] Figure 6 A schematic diagram illustrating the process of a spring breaking apart under force to form a snap-fit ​​piece;

[0051] Figure 7 for Figure 1 Schematic diagram of the middle insertion rod;

[0052] Figure 8 for Figure 1 Schematic diagram of the middle connecting sleeve;

[0053] Figure 9 for Figure 8 A schematic diagram of the connecting sleeve from another perspective;

[0054] Figure 10 for Figure 9 Cross-sectional view of the connecting sleeve with CC as the section line;

[0055] Figure 11 This is a schematic diagram of the connecting sleeve in another embodiment;

[0056] Figure 12 This is a schematic diagram of the connecting sleeve in another embodiment;

[0057] Figure 13 This is a schematic diagram of the connecting sleeve in another embodiment;

[0058] Figure 14 This is a partial structural diagram of the connecting sleeve in another embodiment;

[0059] Figure 15This is a partial structural diagram of the connecting sleeve in another embodiment;

[0060] Figure 16 This is a schematic diagram of the insert in another embodiment;

[0061] Figure 17 This is a cross-sectional view of the connecting component in another embodiment;

[0062] Figure 18 for Figure 17 The diagram shows an enlarged view of the connecting component at point Y.

[0063] Figure 19 for Figure 17 The diagram shows an enlarged view of the connecting component at point Z;

[0064] Figure 20 This is a partially enlarged cross-sectional view of the connecting component in another embodiment;

[0065] Figure 21 This is a schematic diagram of the insert in another embodiment;

[0066] Figure 22 This is a schematic diagram of the insert in another embodiment.

[0067] Figure label:

[0068] 100. Connecting assembly; 10. First sleeve; 20. Second sleeve; 21. Cylindrical limiting part; 22. Cylindrical extension part; 23. Limiting step; 231. First abutting surface; 232. Transition surface; 233. Second abutting surface; 24. Connecting cylindrical part; 30. Connecting sleeve; 31. Elastic part; 32. Connecting part; 311. Spring piece; 312. Gap; 313. First stress relief groove; 314. Guide slope 315. Connecting piece; 316. Second relief groove; 317. Connecting rib; 33. Stop part; 34. Insertion hole; 401. Stop step; 40. Insert rod; 41. Second fixing part; 42. Small diameter part; 43. Large diameter part; 431. Second inclined slope; 432. Protrusion; 44. First fixing part; 45. Guide part; 46. Clearance step; 47. First inclined slope; 48. Clearance space; 49. Chamfer. Detailed Implementation

[0069] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0070] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0071] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0072] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0073] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0074] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0075] In the field of construction technology, to facilitate production and reduce construction time, precast reinforced concrete piles are often assembled to ensure the length of engineering components. To facilitate a convenient and secure connection between two precast reinforced concrete piles, connecting components are generally used to connect the internal reinforcing bars. However, existing connecting components have complex structures, are inconvenient to assemble, have insufficient snap-fit ​​methods and areas, and poor overall tensile strength. Furthermore, in practical use, multiple connecting components are typically connected together, and during the connection process, assembly tolerances can easily lead to misalignment within some components. Some spring clips may fail to effectively abut against the inner wall of the embedded sleeve, causing some connecting components to fail to perform their connecting function. In severe cases, this can even damage the internal structure of the connecting components, causing the spring clips to break under excessive compressive force, thus failing to provide sufficient connection strength for the two precast components and easily leading to loosening or even separation of the two connected precast components.

[0076] Based on this, see Figures 1 to 10 This invention provides a connecting component 100, which is used to connect two adjacent precast components, including but not limited to precast piles made of reinforced concrete. It is understood that in other embodiments, the connecting component 100 can also be applied to other engineering fields, such as prefabricated buildings and cast-in-place concrete buildings.

[0077] A connecting assembly 100 includes a first sleeve 10, a second sleeve 20, a connecting sleeve 30, and a plug rod 40. The second sleeve 20 includes a cylindrical limiting part 21 and a cylindrical extension part 22 connected to each other. The inner diameter of the cylindrical limiting part 21 is smaller than the inner diameter of the cylindrical extension part 22. A limiting step 23 is provided between the cylindrical limiting part 21 and the cylindrical extension part 22. The limiting step 23 includes a first abutting surface 231 and a second abutting surface 233 with a height difference. The second abutting surface 233 is located on the inner periphery of the first abutting surface 231 and is located on the side of the first abutting surface 231 that is relatively closer to the first sleeve 10.

[0078] The connecting sleeve 30 includes a connecting part 32 and an elastic part 31 that are connected to each other. The connecting part 32 is fixedly connected to one end of the insertion rod 40, and the other end of the insertion rod 40 is fixedly connected to the first sleeve 10. The connecting sleeve 30 can be inserted into the cylindrical limiting part 21 together with the insertion rod 40. The elastic part 31 includes a plurality of spring pieces 311. The plurality of spring pieces 311 are arranged in a circumferential manner, and a gap 312 is provided between two adjacent spring pieces 311. The plurality of spring pieces 311 can elastically contract to enter the cylindrical limiting part 21, and can elastically expand to abut against the first abutting surface 231 or the second abutting surface 233.

[0079] The outer peripheral wall of the elastic part 31 is provided with a first stress relief groove 313. The first stress relief groove 313 is located on the side of the spring piece 311 that is relatively close to the connecting part 32. When the insert rod 40 is subjected to a certain pulling force, the elastic part 31 can break along the first stress relief groove 313. After breaking, the groove wall of the first stress relief groove 313 forms a guide slope 314. The broken part of the elastic part 31 forms a snap-fit ​​piece 315. The guide slope 314 is used to guide the snap-fit ​​piece 315 to slide towards the axis of the connecting sleeve 30 at the end that is relatively away from the cylindrical limiting part 21.

[0080] With this configuration, the connecting assembly 100 provided by the present invention can be inserted into the cylindrical limiting part 21 of the cylindrical limiting part by means of plug-in connection, whereby the elastic part 31 elastically contracts and is inserted along with the plug rod 40. After the plug rod 40 is inserted into place, the elastic part 31 enters the cylindrical extension part 22, whose inner diameter is larger than that of the cylindrical limiting part 21, and can then elastically expand to abut against the limiting step 23 between the cylindrical extension part 22 and the cylindrical limiting part 21, thereby achieving the function of quickly connecting the first sleeve 10 and the second sleeve 20. Moreover, the connecting assembly 100 has fewer structural components, is easy to assemble, has low overall manufacturing cost, wide applicability, and excellent economic benefits; the first unloading groove 313 reduces the number of spring pieces 31. The local thickness of 1 increases the deformation of the spring piece 311 at the first relief groove 313. Since the first relief groove 313 is opened on the side of the spring piece 311 that is relatively close to the connecting part 32, the shrinkage force required for the spring piece 311 to shrink is smaller, which facilitates the spring piece 311 to pass through the cylindrical limiting part 21. When the spring piece 311 is subjected to a compressive force exceeding the limit value at the first relief groove 313, the snap-fit ​​piece 315 can break along the first relief groove 313 and abut against the insert rod 40, which avoids the crack expansion when the spring piece 311 breaks and affects the overall strength of the connecting sleeve 30. It can also use the fracture to improve the connection strength in reverse, further ensuring the connection reliability of the connecting assembly 100.

[0081] In other words, when more than 100 existing connecting components are connected together, assembly tolerances can easily cause some connecting components to become misaligned or stuck inside, resulting in insufficient connection strength between the two prefabricated components. In severe cases, this can even damage the internal structure of the connecting components, wasting manpower and resources and delaying the project progress.

[0082] Therefore, in one embodiment of the present invention, the limiting step 23 includes a first abutting surface 231 and a second abutting surface 233 with a height difference H1. When multiple connecting components 100 are connected together, the elastic part 31 of some connecting components 100 can abut against the first abutting surface 231 after elastic expansion. When some connecting components 100 are misaligned due to the accumulation of tolerances caused by assembly, the elastic part 31 of the part connecting components 100 can still abut against the second abutting surface 233 which is relatively inward and has a height difference H1 with the first abutting surface 231. This effectively ensures that the elastic part 31 of all connecting components 100 can be effectively limited, reducing or avoiding the risk of the elastic part 31 of some connecting components 100 breaking and failing due to the accumulation of assembly tolerances when multiple connecting components 100 are connected together, and ensuring the connection strength and reliability of multiple connecting components 100.

[0083] Please see again Figure 2 and Figure 5 It should be noted that in this embodiment, the cylindrical limiting part 21 and the cylindrical extension part 22 are integrally formed. The cylindrical limiting part 21 is located on the side relatively close to the first sleeve 10. When the insertion rod 40 is inserted, the elastic part 31 first elastically contracts and enters the cylindrical limiting part 21, and then enters the cylindrical extension part 22 from the cylindrical limiting part 21. The limiting step 23 is provided on the side of the cylindrical limiting part 21 relatively far away from the first sleeve 10.

[0084] It should be further explained that when connecting two prefabricated components (not shown in the figure), the first sleeve 10, the insert rod 40, and the connecting sleeve 30 are assembled and fixed to the reinforcing steel at the end of one prefabricated component, while the second sleeve 20 is assembled and fixed to the reinforcing steel at the end of the other prefabricated component. The ends of the two prefabricated components equipped with the connecting components 100 are then joined together, that is, the end of the insert rod 40 equipped with the connecting sleeve 30 is inserted into the second sleeve 20. This allows for a quick connection between the two prefabricated components, extending the length of the engineering parts. It can be understood that during the insertion process, after the insert rod 40 is aligned with the second sleeve 20, the weight of the prefabricated component allows the insert rod 40 to enter the second sleeve 20.

[0085] It is understandable that the specific assembly sequence is not limited, as long as the first sleeve 10, the insert rod 40 and the connecting sleeve 30 can be assembled to the end of one of the prefabricated components, and the second sleeve 20 can be assembled to the corresponding position of the other prefabricated component, so that after the two prefabricated components are connected, the elastic part 31 can effectively abut against the limiting step 23.

[0086] Please see again Figure 4 and Figure 5Furthermore, the second sleeve 20 also includes a connecting sleeve portion 24, which is located at one end of the cylindrical extension 22 that is relatively far from the cylindrical limiting portion 21. The connecting sleeve portion 24 is used to connect and fix with the reinforcing bars of the precast component. The first sleeve 10 also includes a connecting portion (not labeled) that has the same function as the second sleeve 20. The connecting portion of the first sleeve 10 is located on the side relatively far from the second sleeve 20 and is used to connect and fix with the reinforcing bars at the end of another precast component.

[0087] It is understandable that, in order to increase the connection strength and reliability between precast components, each end of a steel bar in each precast component can be connected to the corresponding steel bar at the end of another precast component via a connection component 100.

[0088] Please see again Figures 1 to 3 Optionally, in this embodiment, the width N1 of the second abutment surface 233 is greater than or equal to the width M1 of the end face of the spring piece 311. With this configuration, when multiple connecting components 100 are mated, the width of the second abutment surface 233 being greater than or equal to the width of the end face of the spring piece 311 can further ensure the limiting and locking effect on the elastic part 31, effectively preventing the elastic part 31 from dislodging from the first sleeve 10.

[0089] It is understood that in other embodiments, the width N1 of the second abutment surface 233 may also be smaller than the width M1 of the end face of the spring piece 311, as long as the second abutment surface 233 can effectively abut against the limiting spring piece 311.

[0090] Please see again Figures 1 to 3 Optionally, the width N2 of the first abutment surface 231 is less than or equal to the width N1 of the second abutment surface 233. With this setting, the width of the first abutment surface 231 being less than or equal to the width of the second abutment surface 233 can ensure that when multiple abutment components are abutted at the same time, the elastic part 31 of some abutment components can smoothly transition to the second abutment surface 233 and be abutted by the second abutment surface 233 according to the insertion situation, avoiding the situation where some spring pieces 311 are damaged due to pull-out force.

[0091] It is understood that, depending on the requirements, in other embodiments, the width N2 of the first abutment surface 231 may also be greater than the width M1 of the end face of the spring piece 311.

[0092] Please see again Figures 1 to 3Furthermore, the height difference H1 ranges from 0.8mm to 1.2mm. Experiments show that a height difference H1 between the first abutment surface 231 and the second abutment surface 233 within the range of 0.8mm to 1.2mm allows the elastic part 31 to more easily transition to abutting with the second abutment surface 233, ensuring that when multiple connecting components 100 are simultaneously abutted, all elastic parts 31 can be abutted by either the first abutment surface 231 or the second abutment surface 233. However, when the height difference H1 is less than 0.8mm, the distance between the first abutment surface 231 and the second abutment surface 233 is too close, resulting in insufficient buffering or clearance space, leading to multiple... When the connecting components 100 are simultaneously mated, misalignment damage is still difficult to avoid. Furthermore, when the height difference H1 is greater than 1.2mm, the excessive height difference between the first abutment surface 231 and the second abutment surface 233 makes it difficult for the elastic portion 31 of some connecting components 100 to effectively abut against the second abutment surface 233, resulting in insufficient connection reliability of the connecting components 100. It should be noted that the height difference H1 ranges from 0.8mm to 1.2mm, including height differences H1 equal to 1.2mm and height differences H1 equal to 0.8mm. It is understood that in other embodiments, the height of the height difference H1 can be adaptively adjusted according to actual conditions and is not entirely limited to the range of 0.8mm to 1.2mm.

[0093] In the unstressed state, the outer diameter of the elastic part 31 on the side furthest from the connecting part 32 is greater than or equal to the outer diameter of the first abutment surface 231. With this configuration, after elastic expansion, the elastic part 31 can be abutted and limited by the first abutment surface 231 or the second abutment surface 233 in the axial direction, and can also maintain elastic abutment with the inner peripheral wall of the cylindrical extension 22 in the radial direction by its own elasticity, further increasing the connection strength and connection stability of the connecting assembly 100.

[0094] Please see again Figures 1 to 5 Furthermore, the limiting step 23 also includes a transition surface 232, which is located between the second abutment surface 233 and the first abutment surface 231, and the angle between the transition surface 232 and the second abutment surface 233 and the first abutment surface 231 is a right angle or an obtuse angle. This arrangement, with the transition surface 232 forming a right angle with the second abutment surface 233 and the first abutment surface 231, facilitates processing and forming (see...). Figure 3 The angle between the transition surface 232 and the second abutment surface 233 and the first abutment surface 231 is an obtuse angle (not shown in the figure), which enables the transition surface 232 to play a guiding role, making it easier to guide the elastic part 31 to abut against the second abutment surface 233, and avoiding the phenomenon of the spring piece 311 breaking and failing due to the large tensile stress it is subjected to.

[0095] It is understood that when the angle between the transition surface 232 and the second contact surface 233 and the first contact surface 231 is an obtuse angle, the specific angle of the obtuse angle can be set according to the requirements.

[0096] Please see again Figure 1 , Figure 2 , Figure 3 and Figure 7 In one embodiment of the present invention, the insertion rod 40 includes a second fixing part 41, a small diameter part 42, a large diameter part 43 and a first fixing part 44 arranged in sequence. The second fixing part 41 is used to fix the connection part 32, the small diameter part 42 corresponds to the elastic part 31, the large diameter part 43 corresponds to the cylindrical limiting part 21, and the first fixing part 44 is used to fix the connection part 10.

[0097] A clearance step 46 is provided between the large-diameter portion 43 and the small-diameter portion 42, and the elastic portion 31 has a clearance space 48 between itself and the step surface of the clearance step 46 in the axial direction. This arrangement allows the elastic portion 31 to make way for radial elastic contraction through the clearance space 48.

[0098] Please see again Figure 3 Furthermore, when the limiting step 23 includes a first abutting surface 231 and abutting surface 233, the height difference H1 is less than or equal to the height H2 of the clearance space 48. This configuration can prevent the inner peripheral wall of the cylindrical limiting part 21 from hindering the radial elastic expansion of the elastic part 31, ensuring that the elastic part 31 can smoothly abut against the first abutting surface 231 or the second abutting surface 233.

[0099] Please see again Figure 1 , Figure 2 , Figure 3 and Figure 7 In one embodiment of the present invention, a second inclined slope 431 is provided on the side of the large-diameter portion 43 near the relief step 46. With this arrangement, the second inclined slope 431 can play a guiding role, making it easier for the large-diameter portion 43 to enter the cylindrical limiting portion 21.

[0100] Please see again Figures 1 to 5 In one embodiment of the present invention, the inner peripheral wall of the cylindrical limiting part 21 is inclined, and the inner diameter of the inner peripheral wall of the cylindrical limiting part 21 relative to the end closer to the first sleeve 10 is larger than the inner diameter of the end relatively farther from the first sleeve 10; the insertion rod 40 is frustoconical corresponding to the outer peripheral wall of the cylindrical limiting part 21, and the inclination angle matches that of the inner peripheral wall of the cylindrical limiting part 21. With this configuration, the inclined inner peripheral wall of the cylindrical limiting part 21 has a guiding function, enabling it to cooperate with the large-diameter portion 43 of the insertion rod 40, allowing the insertion rod 40 to be inserted more smoothly into the cylindrical limiting part, and the inclination angles of the two are matched.

[0101] Please see again Figures 1 to 7In one embodiment of the present invention, the outer peripheral wall of the insertion rod 40 is provided with a protrusion 432. The outer diameter of the protrusion 432 is larger than the inner diameter of the cylindrical limiting part 21. The two sides of the protrusion 432 can respectively abut against the end of the first sleeve 10 and the end of the cylindrical limiting part 21. With this configuration, the protrusion 432 can play a positioning role, improve the installation accuracy, enable the first sleeve 10 and the insertion rod 40 to be screwed into place, and enable the insertion rod 40 to drive the connecting sleeve 30 to be inserted into place. This ensures that the elastic part 31 can move smoothly within the cylindrical limiting part and elastically expand to abut against the limiting step 23. In addition, the provision of the protrusion 432 can, to a certain extent, improve the ability of the insertion rod 40 to withstand pressure and pull-out force, and reduce the risk of damage and failure of the insertion rod 40.

[0102] A stop step 401 is also provided between the small diameter portion 42 and the second fixing portion 41 of the insertion rod 40. The stop step 401 is used to limit the threaded connection depth between the insertion rod 40 and the connecting sleeve 30. With this configuration, the stop step 401 can effectively position the installation position of the connecting sleeve 30, avoid over-assembly between the insertion rod 40 and the connecting sleeve 30, effectively improve the assembly accuracy, and avoid the risk of the insertion rod 40 loosening and moving upward after the elastic portion 31 of the connecting sleeve 30 elastically expands.

[0103] Please see again Figures 1 to 3 , Figures 8 to 10 The connecting sleeve 30 also includes a stop portion 33, which is fixedly connected to the end of the connecting portion 32 that is relatively far from the elastic portion 31. The stop portion 33 abuts against the end of the insertion rod 40 that is relatively far from the first sleeve 10. The stop portion 33 can play a limiting role, preventing excessive twisting between the insertion rod 40 and the connecting sleeve 30, and improving the installation accuracy between the insertion rod 40 and the connecting sleeve 30. In other words, the connecting sleeve 30 includes a stop portion 33, which is connected to the end of the connecting portion 32 that is relatively far from the elastic portion 31, and the stop portion 33 protrudes from the inner wall of the connecting sleeve 30. The stop portion 33 is used to stop the connecting sleeve 30 when it is installed to the preset position of the insertion rod 40. With this configuration, the stop portion 33 stops the connecting sleeve 30, limits the installation position of the connecting sleeve 30, ensures that the connecting sleeve 30 is installed to the preset position and fixed, and at the same time, the stop portion 33 can also indicate that the installation is complete.

[0104] Please see again Figure 10 Optionally, the stop part 33 is annular, and an insertion hole 34 is provided in the middle of the stop part 33. The shape of the insertion hole 34 can be set according to the requirements, including but not limited to circular, prismatic and other shapes.

[0105] It is understandable that when the insertion hole 34 is non-circular, while not affecting the limiting function of the stop part 33 on the insertion rod 40, the user can use tools to screw the connecting sleeve 30 with the non-circular insertion hole 34, so that the connecting sleeve 30 can be threadedly connected to the insertion rod 40 more easily and effortlessly. In other words, the non-circular insertion hole 34 in the middle of the stop part 33 allows the stop part 33 to perform both the function of limiting the degree of connection between the insertion rod 40 and the connecting sleeve 30 and facilitating the screwing of the connecting sleeve 30.

[0106] Please see again Figures 1 to 3 , Figures 8 to 10 Optionally, in one embodiment, the first stress relief groove 313 connects two adjacent gaps 312. This arrangement increases the length of the first stress relief groove 313, further increasing the deformation of the spring piece 311 at the first stress relief groove 313, reducing the insertion force of the insertion rod 40, and facilitating the breakage of the snap-fit ​​piece 315 along the first stress relief groove 313.

[0107] Please see Figure 11 It is understood that in other embodiments, the first unloading groove 313 may only be connected to one gap 312 or both ends of the first unloading groove 313 may not be connected to the gap 312, as long as the spring piece 311 can quickly disconnect when subjected to compressive force.

[0108] Optionally, in one embodiment, each spring piece 311 has multiple first stress-relieving grooves 313 arranged circumferentially, and the first stress-relieving grooves 313 penetrate the inner and outer walls of the elastic part 31. This arrangement further reduces the thickness of the spring piece 311 at the first stress-relieving groove 313, reducing the difficulty of breakage of the snap-fit ​​piece 315.

[0109] It is understood that in other embodiments, the first stress relief groove 313 may not simultaneously penetrate the inner wall and the outer wall of the elastic part 31, and this is not limited here.

[0110] Please see Figure 12 Optionally, in one embodiment, the first stress relief groove 313 is wavy in the circumferential direction of the spring piece 311.

[0111] With this configuration, the wave-shaped or arc-shaped first relief groove 313 can guide the end of the snap-fit ​​piece 315 that is relatively far away from the cylindrical limiting part 21 to slide in the axial direction of the connecting sleeve 30, while also preventing the end of the snap-fit ​​piece 315 that is relatively far away from the cylindrical limiting part 21 from sliding along the circumferential direction of the connecting sleeve 30.

[0112] Please see Figure 13 Optionally, in one embodiment, the first unloading groove 313 is arc-shaped in the circumferential direction of the spring piece 311, and the arc opening is disposed towards the connecting portion 32.

[0113] With this configuration, after the spring 311 breaks, the end of the snap-fit ​​piece 315 near the connecting part 32 is also arc-shaped and matches the shape of the insert rod 40, so that the snap-fit ​​piece 315 can fully abut against the insert rod 40.

[0114] Optionally, in one embodiment, the bottom of the first stress relief groove 313 is provided with a through hole, which can penetrate the inner wall and the outer wall of the elastic part 31.

[0115] With this design, the through hole weakens the connection strength of the spring piece 311 at the first unloading groove 313, making it easier for the spring piece 311 to break at the first unloading groove 313.

[0116] Optionally, in one embodiment, the shape of the through hole is not limited to circular, elliptical, square, rhomboid, or other shapes.

[0117] It is understood that in other embodiments, each spring piece 311 may also have multiple first unloading grooves 313 and multiple through holes, and the first unloading grooves 313 and through holes are arranged alternately.

[0118] Please see Figure 14 Optionally, in one embodiment, the inner peripheral wall of the elastic part 31 is provided with a second stress relief groove 316, the extension lines of the first stress relief groove 313 and the second stress relief groove 316 are on the same straight line, and the elastic part 31 also includes a connecting rib 317, the first stress relief groove 313 and the second stress relief groove 316 are separated by the connecting rib 317.

[0119] This configuration further compresses the thickness of the spring piece 311 at the second unloading groove 316 by opening the second unloading groove 316. At the same time, the second unloading groove 316 can also guide the broken snap-fit ​​piece 315 so that the snap-fit ​​piece 315 can quickly abut against the insert rod 40.

[0120] Optionally, the first unloading groove 313 and the second unloading groove 316 correspond one-to-one, and the first unloading groove 313 and the second unloading groove 316 have the same length.

[0121] This design further reduces the thickness of the connecting rib 317, and after the spring piece 311 is disconnected along the first unloading groove 313, the first unloading groove 313 and the second unloading groove 316 can be connected to increase the flatness of the guide slope 314, which is beneficial for multiple spring pieces 311 to simultaneously abut against the insert rod 40, thereby increasing the stability of the connection between the two prefabricated components.

[0122] It is understood that in other embodiments, the first unloading groove 313 may also correspond to a plurality of second unloading grooves 316, or the second unloading grooves 316 may also correspond to each first unloading groove 313.

[0123] Please see Figure 15Optionally, the bottom of the second stress relief groove 316 is set in a pointed shape. When the diameter of the elastic part 31 contracts, the groove opening of the second stress relief groove 316 shrinks to a near-closed state. When the compressive force on the spring piece 311 increases, the bottom of the second stress relief groove 316 can rapidly increase until the spring piece 311 breaks.

[0124] This configuration, without affecting the retraction of the spring 311, makes the bottom of the second unloading groove 316 a sharp corner, which helps to accelerate the breakage of the spring 311 along the first unloading groove 313 and further increases the flatness of the guide slope 314.

[0125] Optionally, in one embodiment, the thickness of the spring 311 is 1.92-2.02 mm, and the depth of the first stress relief groove 313 is 1.0-1.2 mm; when the spring 311 is subjected to a compressive force of at least 7.5 T, the spring 311 can break along the first stress relief groove 313.

[0126] With this configuration, the connecting sleeve 30 of the spring 311 can ensure that the spring 311 will not break when it contracts, and can also ensure that the spring 311 can quickly disconnect along the first stress relief groove 313 when the compressive force it is subjected to reaches the limit value.

[0127] To ensure a smooth connection, the two precast components need to be adjusted at the connection point before connection to align the centers of the two embedded sleeves. Traditional techniques often use manual adjustment, which is time-consuming and labor-intensive for connecting large precast components, and also poses significant safety hazards, failing to guarantee the safety of workers.

[0128] Please see Figures 16 to 19 Based on this, in one embodiment, the insertion rod 40 provided in this application further includes a guide portion 45, which is located at the end of the insertion rod 40 that is relatively far away from the first sleeve 10. The connecting sleeve 30 has an insertion hole 34, and the guide portion 45 can pass through the insertion hole 34 and extend out of the connecting sleeve 30. The outer diameter of the guide portion 45 that is relatively close to the first sleeve 10 is greater than the outer diameter of the guide portion 45 that is relatively far away from the first sleeve 10.

[0129] With this configuration, when the insertion rod 40 is inserted into the cylindrical limiting part 21, the guide part 45 can guide the central axis of the insertion rod 40 to align with the central axis of the cylindrical limiting part 21, so that the insertion rod 40 can be smoothly inserted into the cylindrical limiting part 21. The adjustment process of the first sleeve 10 and the second sleeve 20 does not require manual intervention, which reduces the operational risk during manual adjustment and also ensures the insertion efficiency.

[0130] Please see again Figures 16 to 19 See also Figure 21 and Figure 22Optionally, the shape of the guide portion 45 may include, but is not limited to, a cone shape, a hemispherical shape, or a frustum shape. Conical, hemispherical, and frustum-shaped guide portions 45 are easy to process, and the outer diameter of the guide portion 45 varies evenly along its own axial direction, which is beneficial to improving the guiding effect.

[0131] It is understood that in other embodiments, the guide portion 45 may also be a combination of a frustum and a hemisphere, or a combination of a frustum and a cone, as long as the outer diameter of the guide portion 45 gradually increases from the end relatively far from the first sleeve 10 to the end relatively close to the first sleeve 10, it can play a guiding role.

[0132] Please see Figure 20 Optionally, in one embodiment, the outer peripheral wall of the guide portion 45 relative to the end of the first sleeve 10 is fitted with the inner wall of the insertion hole 34.

[0133] With this configuration, the position between the guide part 45 and the inner wall of the insertion hole 34 is relatively fixed, making it less prone to shaking and improving the overall integrity of the insertion rod 40 after it is connected to the connecting sleeve 30.

[0134] Please see Figures 16 to 19 In this embodiment, the insertion rod 40 further includes a first inclined slope 47, which is connected to the end of the guide portion 45 that is relatively close to the first sleeve 10. The outer diameter of the first inclined slope 47 gradually decreases from the end away from the guide portion 45 to the end close to the guide portion 45, and the first inclined slope 47 and the guide portion 45 have a smooth transition.

[0135] With this configuration, the first inclined slope 47 can evenly transmit the pressure on the guide part 45 to other parts of the insertion rod 40, avoiding the insertion rod 40 from being subjected to large local pressure at the guide part 45 and being damaged by impact. The connection between the first inclined slope 47 and the guide part 45 is smooth, which can also reduce the stress concentration of the guide part 45 relative to the end closer to the first sleeve 10.

[0136] It is understood that in other embodiments, the first inclined slope 47 may also be in the shape of a multi-step structure, as long as the outer diameter of the end of the first inclined slope 47 away from the guide portion 45 is greater than the outer diameter of the end closer to the guide portion 45.

[0137] Please see Figures 16 to 20 Optionally, in another embodiment of the invention, the inner surface of the stop portion 33 matches the shape of the first inclined slope 47.

[0138] This design ensures that the inner surface of the stop part 33 is fully in contact with the first inclined slope 47, improving the stopping effect of the stop part 33 and increasing the overall integrity of the connection between the insert rod 40 and the connecting sleeve 30.

[0139] Optionally, in this embodiment, the first fixing part 44 of the insertion rod 40 extends into and is fixedly connected to the first sleeve 10, the large diameter part 43 corresponds to the cylindrical limiting part 21, the small diameter part 42 corresponds to the elastic part 31, the second fixing part 41 is fixedly connected to the connecting part 32, the end of the second fixing part 41 that is relatively far away from the small diameter part 42 is connected to the guide part 45, and the outer diameter of the second fixing part 41 is larger than the outer diameter of the guide part 45, so as to ensure that only the guide part 45 extends out of the insertion hole 34.

[0140] Please see Figures 16 to 19 In this embodiment, a chamfer 49 is provided between the large-diameter portion 43 and the small-diameter portion 42. This arrangement can reduce shear failure caused by stress concentration between the large-diameter portion 43 and the small-diameter portion 42.

[0141] Optionally, in this embodiment, the first fixing part 44 is threadedly connected to the first sleeve 10, and the second fixing part 41 is also threadedly connected to the second sleeve 20.

[0142] This design ensures a stable and reliable threaded connection, and also facilitates the adjustment of the connecting sleeve 30 to the preset position of the insertion rod 40 during installation.

[0143] In this embodiment, the large diameter portion 43 is provided with a second inclined slope 431 at the end that is relatively close to the small diameter portion 42. When the insertion rod 40 drives the connecting sleeve 30 to pass through the cylindrical limiting portion 21, the second inclined slope 431 is used for the elastic portion 31 to abut.

[0144] With this configuration, the second slope 431 can prevent the elastic part 31 from deforming further, thus avoiding uneven deformation and breakage of the elastic part 31, which would affect the connection of the precast components.

[0145] It is understood that in other embodiments, the outer diameter of the small diameter portion 42 may also gradually decrease from the end relatively close to the large diameter portion 43 to the end far away from the large diameter portion 43. Furthermore, the inner peripheral wall of the elastic portion 31 when it contracts can fit against the outer peripheral wall of the small diameter portion 42.

[0146] This design can prevent the elastic part 31 from deforming further, and the inner peripheral wall of the elastic part 31 and the outer peripheral wall of the small diameter part 42 can fit together to protect the elastic part 31 and prevent it from deforming too much and breaking, which would affect the connection between prefabricated components.

[0147] A prefabricated component (not shown in the figure) has a first sleeve 10, a plug rod 40 and a connecting sleeve 30 as described above at one end, and a second sleeve 20 as described above at the other end. Two adjacent prefabricated components are connected to each other by a connecting assembly 100 as described above.

[0148] With this configuration, two adjacent prefabricated components can be effectively connected by the connecting component 100, and the connection strength is reliable, making it less likely for the connection to fail.

[0149] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0150] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A connecting component, characterized in that, The device includes a first sleeve, a second sleeve, a plug rod, and a connecting sleeve. The second sleeve includes a cylindrical limiting part and a cylindrical extending part connected to each other. The inner diameter of the cylindrical limiting part is smaller than the inner diameter of the cylindrical extending part. A limiting step is provided between the cylindrical limiting part and the cylindrical extending part. The limiting step includes a first abutting surface and a second abutting surface with a height difference. The second abutting surface is located on the inner periphery of the first abutting surface and is located on the side of the first abutting surface that is relatively close to the first sleeve. The connecting sleeve includes a connecting part and an elastic part that are connected to each other. The connecting part is fixedly connected to one end of the insert rod, and the other end of the insert rod is fixedly connected to the first sleeve. The connecting sleeve can be inserted into the second sleeve together with the insert rod. The elastic part includes a plurality of spring pieces. The plurality of spring pieces are arranged in a circumferential manner, and there is a gap between two adjacent spring pieces. The plurality of spring pieces can elastically contract to enter the second sleeve, and can elastically expand to abut against the first abutment surface or the second abutment surface. The outer peripheral wall of the elastic part is provided with a first stress relief groove. The first stress relief groove is located on the side of the spring piece that is relatively close to the connecting part. When the insert rod is subjected to a certain pulling force, the elastic part can break along the first stress relief groove. After breaking, the groove wall of the first stress relief groove forms a guide slope. The broken part of the elastic part forms a snap-fit ​​piece. The guide slope is used to guide the snap-fit ​​piece to slide towards the axis of the connecting sleeve at the end that is relatively away from the second sleeve.

2. The connection component according to claim 1, characterized in that, The first stress relief groove connects two adjacent gaps.

3. The connection component according to claim 1, characterized in that, Multiple first stress relief grooves are formed on each of the spring pieces, and the multiple first stress relief grooves are arranged in a circumferential manner, with the first stress relief grooves penetrating the inner wall and outer wall of the elastic part.

4. The connection component according to claim 1, characterized in that, The first stress relief groove is wavy or arc-shaped in the circumferential direction of the spring piece.

5. The connection component according to claim 1, characterized in that, The bottom of the first stress relief groove is provided with a through hole, which can penetrate the inner wall and the outer wall of the elastic part.

6. The connection component according to claim 1, characterized in that, The inner peripheral wall of the elastic part is provided with a second stress relief groove. The extension lines of the first stress relief groove and the second stress relief groove are on the same straight line. The elastic part also includes a connecting rib, and the first stress relief groove and the second stress relief groove are separated by the connecting rib.

7. The connecting component according to claim 6, characterized in that, The first unloading groove corresponds one-to-one with the second unloading groove.

8. The connecting component according to claim 6, characterized in that, The bottom of the second stress relief groove is designed with a pointed corner.

9. The connection component according to claim 1, characterized in that, The thickness of the spring sheet is 1.92mm-2.02mm, and the depth of the first stress-relieving groove is 1.0mm-1.2mm; and / or, When the spring is subjected to a compressive force of at least 7.5T, the spring can break along the first stress relief groove.

10. The connection component according to claim 1, characterized in that, The insertion rod includes a guide portion located at the end of the insertion rod that is relatively far from the first sleeve. The connecting sleeve has an insertion hole, and the guide portion can pass through the insertion hole and extend out of the connecting sleeve. The outer diameter of the guide portion at the end relatively close to the first sleeve is larger than the outer diameter of the guide portion at the end relatively far from the first sleeve.

11. The connection component according to claim 10, characterized in that, The guide portion is conical, hemispherical, or frustum-shaped.

12. The connection component according to claim 10, characterized in that, The outer peripheral wall of the guide portion, which is relatively close to the end of the first sleeve, fits against the inner wall of the insertion hole.

13. The connection component according to claim 10, characterized in that, The insertion rod also includes a first inclined slope, which is connected to the end of the guide portion that is relatively close to the first sleeve. The outer diameter of the first inclined slope gradually decreases from the end away from the guide portion to the end that is close to the guide portion, and the first inclined slope and the guide portion have a smooth transition.

14. The connection component according to claim 13, characterized in that, The connecting sleeve includes a stop portion connected to one end of the connecting portion that is relatively far from the elastic portion, and the stop portion protrudes from the inner wall of the connecting sleeve. The stop portion is used to stop the connecting sleeve when it is installed to the preset position of the insertion rod, and the insertion hole is located in the middle of the stop portion.

15. The connection component according to claim 14, characterized in that, The inner surface of the stop portion matches the shape of the first inclined slope.

16. The connection component according to claim 10, characterized in that, The insertion rod further includes a first fixing part, a large-diameter part, a small-diameter part, and a second fixing part connected in sequence. The first fixing part extends into and is fixedly connected to the first sleeve. The large-diameter part corresponds to the cylindrical limiting part, and the small-diameter part corresponds to the elastic part. The second fixing part is fixedly connected to the connecting part. The end of the second fixing part that is relatively away from the small-diameter part is connected to the guide part, and the outer diameter of the second fixing part is larger than the outer diameter of the guide part. The large-diameter portion and the small-diameter portion can form a clearance step, which is used to make way for the elastic portion when it elastically contracts.

17. The connection component according to claim 16, characterized in that, The larger diameter portion has a second inclined slope at one end relative to the smaller diameter portion. When the insert rod drives the connecting sleeve through the cylindrical limiting portion, the second inclined slope is used for the elastic portion to abut.

18. The connection component according to claim 16, characterized in that, A chamfer is provided between the large-diameter portion and the small-diameter portion.

19. A prefabricated component, characterized in that, One end of the prefabricated component is provided with the first sleeve, the insertion rod and the connecting sleeve as described in any one of claims 1-18, and the other end of the prefabricated component is provided with the second sleeve as described in any one of claims 1-18. Two adjacent prefabricated components are connected to each other by a connecting assembly as described in any one of claims 1-18.

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