Encircling type connecting assembly and pile connecting structure

Abstract

The utility model relates to the technical field of pile connection, and particularly discloses an encircling type connecting assembly and a pile connecting structure. The surrounding type connecting assembly comprises a first sleeve, a second sleeve, an inserting rod and an umbrella rib barrel. The umbrella rib cylinder comprises an umbrella rib cylinder body and a plurality of elastic fins, the upper ends of the elastic fins are connected with the umbrella rib cylinder body, the lower ends of the elastic fins expand outwards, and a ring groove is formed in the inner wall of the first sleeve; the inserting rod comprises a clamping part located at the upper end of the inserting rod and a connecting part located at the lower end of the inserting rod, a clamping groove is formed in the bottom face of the umbrella rib cylinder body, and the clamping part is clamped and fixed in the clamping groove; in the process that the inserting rod and the umbrella rib barrel are inserted into the first sleeve, the lower ends of the elastic fins can contract inwards, and after the inserting rod and the umbrella rib barrel are inserted into the first sleeve, the lower ends of the elastic fins are opened and inserted into the annular grooves; the connecting part is connected with the second sleeve. The position of the insertion rod relative to the umbrella rib cylinder in the axial direction is relatively fixed, and smooth connection of the insertion rod and the sleeve is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to pile connection technical field especially a kind of embracing type connecting assembly and pile connection structure. BACKGROUND

[0002] In the process of building construction, the connection between prefabricated concrete members is indispensable, and the butt joint of traditional prefabricated concrete pipe pile is realized by welding between pile end steel plates. However, due to the limitation of welding process, only the outer periphery of the end plate is usually welded, and most of the middle part of the end plate is not treated, which will lead to uneven and insufficient connection of the pile body, and the pile body has low pullout and bending resistance.

[0003] To solve this problem, some new pile connection structures without end plates have appeared on the market, such as the prefabricated concrete connecting piece and prefabricated concrete pile disclosed in Chinese Utility Model Patent No. CN214832592U. In this patent document, the umbrella barrel is threadedly connected with the insertion rod, and the position of the insertion rod relative to the umbrella barrel in the axial direction is difficult to control. The insertion rod may be inserted into the umbrella barrel too far or not far enough, which will affect the connection between the insertion rod and the sleeve. SUMMARY

[0004] The utility model provides a kind of embracing type connecting assembly and pile connection structure, and the position of insertion rod relative to umbrella barrel in the axial direction is relatively fixed, which ensures the smooth connection between insertion rod and sleeve.

[0005] To solve the above problems, the utility model adopts the following technical solutions:

[0006] According to the first aspect of the utility model, the embodiments of the utility model provide an embracing type connecting assembly, which includes a first sleeve, a second sleeve, an insertion rod and an umbrella barrel. The umbrella barrel includes an umbrella barrel body and a plurality of elastic fins. The upper end of the elastic fin is connected with the umbrella barrel body, and the lower end of the elastic fin is outwardly flared. The inner wall of the first sleeve is provided with a ring groove. The insertion rod includes a clamping portion at its upper end and a connecting portion at its lower end. The bottom surface of the umbrella barrel body is provided with a clamping groove, and the clamping portion is clamped and fixed in the clamping groove. The elastic fins are arranged around the insertion rod. During the insertion of the insertion rod and the umbrella barrel into the first sleeve, the lower end of the elastic fin can be inwardly contracted. After the insertion of the insertion rod and the umbrella barrel into the first sleeve, the lower end of the elastic fin is flared and inserted into the ring groove. At least a part of the connecting portion protrudes from the first sleeve and is connected with the second sleeve.

[0007] In some embodiments, the caliber of the opening at the lower end of the clamping groove is smaller than the diameter of the clamping groove. The insertion rod further includes a main rod portion connecting the clamping portion and the connecting portion. The caliber of the opening at the lower end of the clamping groove is smaller than the outer diameter of the clamping portion, and the caliber of the opening at the lower end of the clamping groove is larger than the outer diameter of the main rod portion.

[0008] In some embodiments, the upper end of the elastic fin is connected to the bottom surface of the umbrella rib barrel body, the upper end of the elastic fin protrudes from the inner wall of the clamping groove, and the inner side surface of the upper end of the elastic fin encloses the opening of the lower end of the clamping groove.

[0009] In some embodiments, the opening of the top surface of the umbrella rib barrel body has a smaller diameter than the diameter of the clamping groove.

[0010] In some embodiments, the bottom wall of the ring groove forms a first inclined surface that is inclined relative to the axis of the first sleeve, and the first inclined surface gradually moves away from the axis of the first sleeve in the upward extending direction; the lower end surface of the elastic fin forms a second inclined surface that is matched with the first inclined surface, and the second inclined surface abuts against the first inclined surface after the lower end of the elastic fin is opened and inserted into the ring groove.

[0011] In some embodiments, the inner wall of the first sleeve is further provided with a tension thread for connecting a tension screw, and the tension thread is located between the top opening of the first sleeve and the ring groove.

[0012] In some embodiments, the outer wall of the connecting part is provided with an external thread, the inner wall of the second sleeve is provided with an internal thread matched with the external thread, and the connecting part is threadedly connected with the second sleeve.

[0013] In some embodiments, the umbrella rib barrel body and the elastic fin are integrally formed.

[0014] According to the second aspect of the utility model, the embodiments of the utility model provide a pile connecting structure which comprises an upper section pile, a lower section pile and the embracing type connecting assembly of any one of the first aspect, the upper section pile is arranged above the lower section pile, a first main reinforcement is embedded in the upper section pile, and a second main reinforcement is embedded in the lower section pile; the first sleeve is anchored to the lower end surface of the upper section pile, and the first main reinforcement is connected with the first sleeve; the second sleeve is anchored to the upper end surface of the lower section pile, and the second main reinforcement is connected with the second sleeve.

[0015] The umbrella rib barrel of the utility model comprises an umbrella rib barrel body and a plurality of elastic fins, the bottom surface of the umbrella rib barrel body is provided with a clamping groove, the plug rod comprises a clamping part at the upper end thereof and a connecting part at the lower end thereof, the clamping part is clamped and fixed in the clamping groove, the connection between the plug rod and the sleeve is realized in the clamped and fixed mode, the movement of the plug rod relative to the umbrella rib barrel is limited, the position of the plug rod relative to the umbrella rib barrel in the axial direction is relatively fixed, and the smooth connection between the plug rod and the sleeve is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a sectional view of the embracing type connecting assembly of an embodiment of the utility model.

[0017] Figure 2 A cross-sectional view of the insertion rod of an embodiment of the utility model for an embodiment of the utility model is provided.

[0018] Figure 3 A cross-sectional view of the umbrella rib barrel of an embodiment of the utility model for an embodiment of the utility model is provided.

[0019] Figure 4 A cross-sectional view of the first sleeve of an embodiment of the utility model for an embodiment of the utility model is provided.

[0020] Figure 5 A cross-sectional view of the pile connecting structure of an embodiment of the utility model for an embodiment of the utility model is provided.

[0021] Among them, the reference sign is:

[0022] The first sleeve 110, the annular groove 111, the tension thread 112, the first inclined surface 113;

[0023] The second sleeve 120, the internal thread 121;

[0024] The insertion rod 200, the clamping portion 210, the connecting portion 220, the external thread 221, the main rod portion 230;

[0025] The umbrella rib barrel 300, the umbrella rib barrel body 310, the clamping groove 311, the elastic fin 320, the second inclined surface 321;

[0026] The upper section pile 410, the lower section pile 420;

[0027] The first main reinforcement 510, the second main reinforcement 520. DETAILED DESCRIPTION

[0028] The utility model provides the following description of reference drawing to help comprehensively understand various embodiments of the utility model as defined by the claim and its equivalents. The description includes various specific details to help understanding, but these details should be regarded as just exemplary. Therefore, those skilled in the art will realize that various changes and modifications can be made to various embodiments described herein without departing from the scope and spirit of the utility model.

[0029] In the description of the utility model, the orientation description such as the orientation or position relationship indicated by up, down, front, back, left, right etc. is based on the orientation or position relationship shown in the drawing, just for the convenience of describing the utility model and simplifying the description, and not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore can not be understood as the limitation of the utility model.

[0030] It should be understood that when an element (e.g., a first element) is "connected" with another element (e.g., a second element), the element can be directly connected with the other element or intervening elements (e.g., a third element) can be present.

[0031] The embodiment of the utility model provides a kind of embrace type connecting assembly, as shown in Figures 1-4 As shown, including first sleeve 110, second sleeve 120, plug rod 200 and umbrella rib cylinder 300. Umbrella rib cylinder 300 includes umbrella rib cylinder body 310 and multiple elastic fins 320, umbrella rib cylinder body can be cylindrical, and elastic fin 320 can be elastically deformed. The upper end of elastic fin 320 is connected with umbrella rib cylinder body 310, and the lower end of elastic fin 320 opens outward, i.e. opens outward relative to the axis of umbrella rib cylinder body 310, which provides a space for elastic fin 320 to elastically contract. The inner wall of first sleeve 110 is provided with annular groove 111, which surrounds the inner wall of first sleeve 110 a circle, and the lower end of elastic fin 320 is inserted enough.

[0032] Plug rod 200 includes clamping portion 210 at its upper end and connecting portion 220 at its lower end, and the bottom surface of umbrella rib cylinder body 310 is provided with clamping groove 311, and clamping portion 210 is clamped and fixed in clamping groove 311. Elastic fin 320 is arranged around plug rod 200, does not interfere with the insertion of clamping portion 210 of plug rod 200 into clamping groove 311, and does not interfere with the elastic expansion and contraction of elastic fin 320. In the process of inserting plug rod 200 and umbrella rib cylinder 300 into first sleeve 110, the lower end of elastic fin 320 can contract inward, and after plug rod 200 and umbrella rib cylinder 300 are inserted into first sleeve 110, the lower end of elastic fin 320 rebounds and expands and is inserted into annular groove 111. At least a part of connecting portion 220 extends out of first sleeve 110 and is connected with second sleeve 120.

[0033] During installation, first connect connecting portion 220 with second sleeve 120, then insert clamping portion 210 into clamping groove 311 and clamp and fix it in clamping groove 311, and finally insert plug rod 200 and umbrella rib cylinder 300 into first sleeve 110. During insertion, the lower end of elastic fin 320 will contract inward due to the blockage of first sleeve 110, so that plug rod 200 and umbrella rib cylinder 300 are smoothly inserted into first sleeve 110. After plug rod 200 and umbrella rib cylinder 300 are inserted into first sleeve 110, the lower end of elastic fin 320 rebounds and expands and is inserted into annular groove 111, limiting umbrella rib cylinder 300 from separating from first sleeve 110, and plug rod 200 is fixed in first sleeve 110, so that first sleeve 110 and second sleeve 120 are connected together.

[0034] In the embodiment, the connecting rod 200 is connected with the umbrella rib barrel 300 by the clamping of the clamping part 210 in the clamping groove 311, which limits the movement of the connecting rod 200 relative to the umbrella rib barrel 300, and the position of the connecting rod 200 relative to the umbrella rib barrel 300 in the axial direction is relatively fixed, thereby ensuring the smooth connection of the connecting rod 200 with the sleeve.

[0035] In some embodiments, the clamping groove 311 is arranged on the bottom surface of the umbrella rib barrel body, and the lower end of the clamping groove 311 naturally has an opening. The caliber of the opening of the lower end of the clamping groove 311 is smaller than the inner diameter of the clamping groove 311, and a step structure is formed at the opening position. The connecting rod 200 further includes a main rod part 230 connecting the clamping part 210 and the connecting part 220. The caliber of the opening of the lower end of the clamping groove 311 is smaller than the outer diameter of the clamping part 210. When the clamping part 210 moves downward, it will be blocked by the step structure, so that the clamping part 210 is difficult to disengage from the clamping groove 311 through the opening of the lower end of the clamping groove 311, and thus can be stably clamped in the clamping groove 311. At the same time, the caliber of the opening of the lower end of the clamping groove 311 is larger than the outer diameter of the main rod part 230, so that the main rod part 230 can extend out of the opening of the lower end of the clamping groove 311.

[0036] Further, the upper end of the elastic fin 320 is connected with the bottom surface of the umbrella rib barrel body 310, and the upper end of the elastic fin 320 protrudes from the inner wall of the clamping groove 311. The inner side surface of the upper end of the elastic fin 320 encloses the opening of the lower end of the clamping groove 311. Therefore, the step structure is formed by the upper end of the elastic fin 320 in the embodiment, and no additional step structure needs to be arranged for the clamping groove 311, thereby simplifying the overall structure of the umbrella rib barrel 300.

[0037] In the embodiment, the thickness of the elastic fin 320 can be greater than the wall thickness of the umbrella rib barrel body 310, so that the upper end of the elastic fin 320 can protrude from the inner wall of the clamping groove 311.

[0038] In some embodiments, the caliber of the opening on the top surface of the umbrella rib barrel body 310 is smaller than the inner diameter of the clamping groove 311. The opening is arranged on the top surface of the umbrella rib barrel body 310, which reduces the material usage of the umbrella rib barrel body 310 and facilitates the observation of the clamping condition of the clamping part 210 in the clamping groove 311. Since the caliber of the opening on the top surface of the umbrella rib barrel body 310 is smaller than the inner diameter of the clamping groove 311, the clamping part 210 is difficult to disengage from the clamping groove 311 through the opening on the top surface of the umbrella rib barrel body 310, which further limits the movement of the connecting rod 200 relative to the umbrella rib barrel 300, and the clamping part 210 can be more stably clamped in the clamping groove 311.

[0039] In some embodiments, the bottom wall of the annular groove 111 forms a first inclined surface 113, which is inclined relative to the axial direction of the first sleeve 110 and gradually moves away from the axis of the first sleeve 110 in the upward direction. The lower end surface of the elastic fin 320 forms a second inclined surface 321, which is adapted to the first inclined surface 113 and also inclined relative to the axial direction of the first sleeve 110 and gradually moves away from the axis of the first sleeve 110 in the upward direction. After the lower end of the elastic fin 320 is opened and inserted into the annular groove 111, the second inclined surface 321 abuts against the first inclined surface 113.

[0040] This design makes it easier for the lower end of the elastic fin 320 to open after the insertion rod 200 and the rib barrel 300 are inserted into the first sleeve 110, and the contact area between the elastic fin 320 and the inner wall of the annular groove 111 is larger, which can avoid stress concentration. At the same time, the lower end of the elastic fin 320 can tightly abut against the first inclined surface 113, reducing the gap between them and improving the sealing performance.

[0041] In some embodiments, the rib barrel body 310 and the elastic fin 320 are integrally formed, which facilitates the manufacturing of the rib barrel 300 and can strengthen the connection strength between the rib barrel body 310 and the elastic fin 320.

[0042] In some embodiments, the inner wall of the first sleeve 110 is also provided with a tensioning thread 112 for connecting a tensioning screw, which is located between the top opening of the first sleeve 110 and the annular groove 111. When tensioning the prestressed steel bar, the insertion rod 200 and the rib barrel 300 are not inserted into the first sleeve 110, and the prestressed steel bar can be connected with the first sleeve 110. The tensioning screw is inserted into the first sleeve 110 and threadedly connected with the tensioning thread 112, which can be used to tension the prestressed steel bar in the prestressed concrete member, so that the function of the first sleeve 110 of the present embodiment is more diverse.

[0043] Since the diameter of the tensioning screw used for tensioning in the industry is generally 27mm, if the tensioning thread 112 is arranged below the annular groove 111, the size of the insertion rod 200 and the rib barrel 300 can only be relatively small in order to be able to pass through the first sleeve at the tensioning thread 112, which limits the size of the insertion rod 200 and the rib barrel 300, resulting in that the ultimate tensile load capacity of the entire connecting assembly is also limited. In the present embodiment, the tensioning thread 112 is arranged between the top opening of the first sleeve 110 and the annular groove 111, and the insertion rod 200 and the rib barrel 300 do not need to extend into the tensioning thread 112, so that the size of the insertion rod 200 and the rib barrel 300 is not limited, and the outer diameter of the insertion rod and the thickness of the rib barrel 300 can be larger, thereby improving the tensile load capacity of the entire connecting assembly.

[0044] In some embodiments, the outer wall of the connecting part 220 is provided with external threads 221, the inner wall of the second sleeve 120 is provided with internal threads 121 matched with the external threads 221, and the connecting part 220 is threadedly connected with the second sleeve 120, which is easy to operate and simple to assemble.

[0045] The embodiment of the utility model provides a pile connecting structure, as shown in the figure, comprising upper section pile 410, lower section pile 420 and the embracing type connecting assembly of any above embodiment, the specific description of the embracing type connecting assembly can refer to the above embodiment, and here is not repeated. Figure 5 The upper section pile 410 is arranged above the lower section pile 420, the first main reinforcement 510 is embedded in the upper section pile 410, and the second main reinforcement 520 is embedded in the lower section pile 420.

[0046] The first sleeve 110 is anchored to the lower end face of the upper section pile 410, and the first main reinforcement 510 is connected with the first sleeve 110. The second sleeve 120 is anchored to the upper end face of the lower section pile 420, and the second main reinforcement 520 is connected with the second sleeve 120.

[0047] In the pile connection, the clamping part 210 of the inserting rod 200 is clamped and fixed in the clamping groove of the umbrella rib barrel, the connection of the inserting rod 200 and the umbrella rib barrel is realized, then the connecting part 220 of the inserting rod 200 is connected with the second sleeve 120 in the lower section pile 420, then the upper section pile 410 is lifted, the upper section pile 410 is aligned with the lower section pile 420, the inserting rod 200 and the umbrella rib barrel are aligned with the first sleeve 110, then the upper section pile 410 is placed on the top surface of the lower section pile 420, the inserting rod 200 and the umbrella rib barrel are pressed into the first sleeve 110 by the weight of the upper section pile 410, the elastic fins 320 are extruded and contracted and then are opened, finally the lower end of the elastic fins 320 is inserted into the ring groove 111, and the connection of the upper section pile 410 and the lower section pile 420 is realized.

[0048] In some embodiments, the opening at the top end of the first sleeve 110 is provided with a first convex ring, the end of the first main reinforcement 510 is formed into a head, and the head of the first main reinforcement 510 is clamped in the first convex ring, so that the first main reinforcement 510 is connected with the first sleeve 110.

[0049] The opening at the bottom end of the second sleeve 120 is provided with a second convex ring, the end of the second main reinforcement 520 is formed into a head, and the head of the second main reinforcement 520 is clamped in the second convex ring, so that the second main reinforcement 520 is connected with the second sleeve 120.

[0050] The terms and words used in the above description and claims are not limited to the bibliographical meanings, but are merely used to enable a clear and complete understanding of the present application by those skilled in the art. Accordingly, it should be apparent to those skilled in the art that the above description of various embodiments of the present application is provided only to explain the present application and it would not be construed as limiting the present application as defined by the appended claims and their equivalents.

Claims

1. A wrap-around connection assembly, characterized by: The umbrella rib tube comprises an umbrella rib tube body and a plurality of elastic fins, the upper end of the elastic fin is connected with the umbrella rib tube body, the lower end of the elastic fin is opened outward, and the inner wall of the first sleeve is provided with a ring groove.

2. The wrap-around connection assembly of claim 1, wherein: The opening caliber of the lower end of the card slot is smaller than the diameter of the card slot, the plug rod further comprises a main rod part connecting the card joint part and the connecting part, the opening caliber of the lower end of the card slot is smaller than the outer diameter of the card joint part, and the opening caliber of the lower end of the card slot is larger than the outer diameter of the main rod part.

3. The wrap-around connection assembly of claim 2, wherein: The upper end of the elastic fin is connected with the bottom surface of the umbrella rib tube body, the upper end of the elastic fin protrudes from the inner wall of the card slot, and the inner side surface of the upper end of the elastic fin forms the opening of the lower end of the card slot.

4. The wraparound connection assembly of claim 1, wherein: The opening caliber of the top surface of the umbrella rib tube body is smaller than the diameter of the card slot.

5. The wrap-around connection assembly of any of claims 1-4, wherein: The bottom wall of the ring groove forms a first inclined surface, the first inclined surface is arranged in an inclined manner relative to the axial direction of the first sleeve, and in the upward extending direction, the first inclined surface gradually moves away from the axis of the first sleeve; the lower end surface of the elastic fin forms a second inclined surface matched with the first inclined surface, and after the lower end of the elastic fin is opened and inserted into the ring groove, the second inclined surface abuts against the first inclined surface.

6. The wrap-around connection assembly of any of claims 1-4, wherein: The inner wall of the first sleeve is further provided with a tension thread for connecting a tension screw, and the tension thread is located between the top opening of the first sleeve and the ring groove.

7. The wrap-around connection assembly of any of claims 1-4, wherein: The outer wall of the connecting part is provided with an external thread, the inner wall of the second sleeve is provided with an internal thread matched with the external thread, and the connecting part is threadedly connected with the second sleeve.

8. The wrap-around connection assembly of any of claims 1-4, wherein: The umbrella rib tube body and the elastic fin are integrally formed.

9. A pile connection structure, characterized by: The upper section pile is arranged above the lower section pile, the first main reinforcement is embedded in the upper section pile, and the second main reinforcement is embedded in the lower section pile; the first sleeve is anchored to the lower end surface of the upper section pile, and the first main reinforcement is connected with the first sleeve; the second sleeve is anchored to the upper end surface of the lower section pile, and the second main reinforcement is connected with the second sleeve.

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