Hollow concrete pile tensioning die and hollow concrete pile core die tensioning structure

Abstract

According to the hollow concrete pile core mold tensioning structure, a pouring core mold is supported by a tensioning framework, the outer side of the tensioning framework is wrapped with an elastic skin, the elastic skin forms a hollow structure in the concrete pouring process through circumferential stretching or stretching of the tensioning framework, the hollow structure is pulled out of a center hole after forming, and therefore the hollow structure is formed. And pouring forming of the hollow concrete pile is completed, the tensioning framework supports the elastic skin in an attached mode through the multiple inner supporting plates, the inner supporting plates are supported in the radial direction through the jacking structure, and in the process, expansionary force and supporting force of the elastic skin are provided. The pouring core mold is in tensioning fit with the tensioning plate set through the tensioning rod, the tensioning rod is connected with the tensioning adjusting device, the tensioning adjusting device can tighten or loosen the jacking structure, the inner supporting plate is supported or recycled by the jacking structure, and forming of the hollow structure of the hollow concrete pile through the elastic skin is completed. The utility model further provides a hollow concrete pile tensioning die.

Description

Technical Field

[0001] This utility model relates to the field of hollow concrete pile technology, and more specifically, to a hollow concrete pile tensioning mold and a hollow concrete pile core mold tensioning structure. Background Technology

[0002] Hollow concrete piles are a type of precast concrete pile with a hollow structure, and are widely used in foundation construction of building projects.

[0003] Hollow concrete piles commonly found on the market require a core mold in their molding process. After the concrete is placed in the mold and left to harden, a key challenge is how to quickly and easily remove the core mold. Current solutions often involve applying a release agent directly to the outside of the core mold for subsequent removal. However, this forceful removal can damage the concrete pile. Furthermore, existing core mold designs are often integral metal designs, leading to higher costs. Ensuring the core mold does not deform or bend under concrete pressure is another area for improvement. Utility Model Content

[0004] In view of this, the present invention provides a hollow concrete pile tensioning mold and a hollow concrete pile core mold tensioning structure to improve the preparation capability of hollow concrete piles.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A hollow concrete pile core mold tensioning structure includes a casting core mold and a tensioning plate group for tensioning and adjusting both ends of the casting core mold along its length. The casting core mold has a tensioning skeleton extending along its length and an elastic skin covering the outer periphery of the tensioning skeleton.

[0007] The tension skeleton includes multiple inner support plates that are attached to the inner side of the elastic skin, and the inner wall surface of the inner support plate is provided with a support structure that supports the inner support plate radially.

[0008] The casting core mold also includes tension rods extending from both ends of the tension skeleton along its length. The inner side of the tension plate assembly is also provided with a tension adjustment device that engages with the tension rods and tightens or loosens the top support structure through the tension rods.

[0009] Preferably, in the above-mentioned hollow concrete pile core mold tensioning structure, the top support structure includes a top support rod fixed to the inner wall of the inner support plate, a reduced diameter section coaxially arranged in the middle of the top support rod, and a slidingly mounted movable section fitted on the outside of the reduced diameter section; the tensioning rod is connected to the outer surface of the movable section.

[0010] Preferably, in the above-mentioned hollow concrete pile core mold tensioning structure, the movable part and the variable diameter part are arranged at one end of the top support rod in the length direction, and buffer springs are arranged at both ends of the movable part in the sliding direction, and the buffer springs are pressed against the shaft end of the top support rod.

[0011] Preferably, in the above-mentioned hollow concrete pile core mold tensioning structure, the top support structure includes a top support rod fixed to the inner wall of the inner support plate, the tensioning rod includes a first tensioning part extending out of the axial end of the top support rod, and the inner wall of the tensioning plate assembly is provided with a second tensioning part corresponding to the position of the first tensioning part;

[0012] It also includes a rigid support elastic member with a bent structure, wherein the two ends of the support elastic member in the length direction are fixed to the outer peripheral surfaces of the first tensioning part and the second tensioning part;

[0013] It also includes a support spring, which is pressed between the shaft ends of the first tensioning section and the second tensioning section.

[0014] Preferably, in the above-mentioned hollow concrete pile core mold tensioning structure, the top support structure includes a top support rod fixed to the inner wall of the inner support plate, the tensioning rod includes a first tensioning part extending out of the axial end of the top support rod, and the inner wall of the tensioning plate assembly is provided with a second tensioning part corresponding to the position of the first tensioning part;

[0015] An L-shaped insert extends from the outer wall of the first tensioning section. The L-shaped insert has a first support portion extending radially along the first tensioning section and a guide portion extending axially along the first tensioning section.

[0016] A second support portion extends from the second tensioning section and falls between the guide portion and the first tensioning section;

[0017] A buffer spring is provided between the first support part and the second support part to buffer the tension and compression of the two.

[0018] Preferably, in the above-mentioned hollow concrete pile core formwork tensioning structure, the top support structure includes a top support rod fixed to the inner wall of the inner support plate, the top support rod is a hollow tubular top support rod, and the tensioning rod includes a threaded rod passing through the top support rod and a connecting nut fixed to the inner wall of the tensioning plate assembly, the threaded rod and the connecting nut being threadedly engaged;

[0019] The top support rod engages with the inner support plate via the threaded rod.

[0020] Preferably, in the above-mentioned hollow concrete pile core mold tensioning structure, a connector is provided in the middle of the threaded rod, the threaded rod includes a first threaded rod and a second threaded rod, and the ends of the first threaded rod and the second threaded rod are both fixedly equipped with a first threaded rod baffle extending radially;

[0021] The connector includes a cylindrical connecting body with a second screw baffle extending from the inner end face of the connecting body, and a screw through hole is provided in the middle of the second screw baffle;

[0022] The threaded rod is also fitted with a compression spring that presses between the first screw baffle and the second screw baffle.

[0023] Preferably, in the above-mentioned hollow concrete pile core mold tensioning structure, the threaded rod includes a first threaded rod and a second threaded rod, and the shaft ends of the first threaded rod and the second threaded rod are provided with an annular top support baffle extending radially, and the outer periphery of the annular top support baffle is in support cooperation with the inner wall surface of the top support rod;

[0024] Both the first threaded rod and the second threaded rod have spring support holes at their opposite ends, and compression springs are press-fitted into the spring support holes.

[0025] Preferably, in the above-mentioned hollow concrete pile core mold tensioning structure, the inner support plate is an L-shaped inner support plate, and the inner support plate includes four inner support plates arranged in a ring matrix, and the elastic skin is attached to the outer periphery of the four inner support plates.

[0026] A hollow concrete pile tensioning mold includes a mold body, a plurality of mold grooves for preparing hollow concrete piles are provided in the mold body, and a core mold for forming the hollow structure of the pile body is provided in the mold groove. The core mold has a hollow concrete pile core mold tensioning structure as described in any of the preceding claims.

[0027] The hollow concrete pile core mold tensioning structure provided by this utility model includes a casting core mold and a tensioning plate assembly for tensioning and adjusting both ends of the casting core mold along its length. The casting core mold has a tensioning skeleton extending along its length and an elastic skin covering the outer periphery of the tensioning skeleton. The tensioning skeleton includes multiple inner support plates that are attached to the inner side of the elastic skin. The inner wall surface of the inner support plates is provided with a top support structure that supports the inner support plates radially. The casting core mold also includes tensioning rods extending from both ends of the tensioning skeleton along its length. The inner side of the tensioning plate assembly is also provided with a tensioning adjustment device that is tightened and engaged with the tensioning rods and that tightens or loosens the top support structure through the tensioning rods. During the pouring of hollow concrete piles, the tensioning plate assembly simultaneously supports the reinforcing cage and tensions the core mold. The core mold fills the center of the hollow concrete pile during pouring. To prevent deformation of the core mold during concrete filling, it is supported by the tensioning frame. An elastic skin is wrapped around the outside of the tensioning frame. Through the circumferential expansion and contraction or opening of the tensioning frame, the elastic skin remains taut during concrete pouring, providing stable support for the concrete. After the concrete solidifies, the elastic skin can be withdrawn from the central hole of the formed concrete pile through contraction, completing the pouring and forming of the hollow concrete pile. The tensioning frame supports the elastic skin with multiple inner support plates, and the top support structure radially supports the inner support plates, providing expansion and support forces to the elastic skin during this process. The core mold is tightened by tensioning rods and tensioning plate assemblies. The tensioning rods are connected to tensioning adjustment devices. The tensioning adjustment devices can tighten or loosen the top support structure, so that the top support structure can lift or retract the inner support plate, thus completing the forming of the hollow structure of the hollow concrete pile by the elastic skin. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 A first structural schematic diagram of the hollow concrete pile core mold tensioning structure provided in this application;

[0030] Figure 2 A schematic diagram of the second structure of the hollow concrete pile core mold tensioning structure provided in this application;

[0031] Figure 3 for Figure 2 A partial enlarged view of the tensioning structure of a hollow concrete pile core mold;

[0032] Figure 4 Figure 4A schematic diagram of the third structure of the hollow concrete pile core mold tensioning structure provided in this application;

[0033] Figure 5 for Figure 4 A partial enlarged view of the tensioning structure of a hollow concrete pile core mold;

[0034] Figure 6 A fourth structural schematic diagram of the hollow concrete pile core mold tensioning structure provided in this application;

[0035] Figure 7 for Figure 6 A cross-sectional view of the assembly structure of the connector;

[0036] Figure 8 for Figure 6 A schematic diagram of another screw connection structure in the tensioning structure of the hollow concrete pile core mold;

[0037] Figure 9 for Figure 8 Enlarged view of a portion of point A in the middle. Detailed Implementation

[0038] This utility model discloses a hollow concrete pile tensioning mold and a hollow concrete pile core mold tensioning structure, which improves the preparation capability of hollow concrete piles.

[0039] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0040] like Figure 1 As shown, Figure 1 This is a schematic diagram of the first structure of the hollow concrete pile core mold tensioning structure provided in this application.

[0041] This application provides a hollow concrete pile core mold tensioning structure, including a casting core mold and a tensioning plate assembly for tensioning and adjusting both ends of the casting core mold along its length. The casting core mold has a tensioning skeleton extending along its length and an elastic skin covering the outer periphery of the tensioning skeleton. The tensioning skeleton includes multiple inner support plates 1 that are attached to the inner side of the elastic skin. The inner wall surface of the inner support plates 1 is provided with a top support structure that supports the inner support plates 1 radially. The casting core mold also includes tensioning rods extending from both ends of the tensioning skeleton along its length. The inner side of the tensioning plate assembly is also provided with a tensioning adjustment device that is tightened and engaged with the tensioning rods and that tightens or loosens the top support structure through the tensioning rods.

[0042] During the pouring of hollow concrete piles, the tensioning plate assembly simultaneously supports the reinforcing cage and tensions the core mold. The core mold fills the center of the hollow concrete pile during pouring. To prevent deformation of the core mold during concrete filling, it is supported by the tensioning frame. An elastic skin is wrapped around the outside of the tensioning frame. Through the circumferential expansion and contraction or opening of the tensioning frame, the elastic skin remains taut during concrete pouring, providing stable support for the concrete. After the concrete solidifies, the elastic skin can be withdrawn from the central hole of the formed concrete pile through contraction, completing the pouring and forming of the hollow concrete pile. The tensioning frame supports the elastic skin with multiple inner support plates, and the top support structure radially supports the inner support plates, providing expansion and support forces to the elastic skin during this process. The core mold is tightened by tensioning rods and tensioning plate assemblies. The tensioning rods are connected to tensioning adjustment devices. The tensioning adjustment devices can tighten or loosen the top support structure, so that the top support structure can lift or retract the inner support plate, thus completing the forming of the hollow structure of the hollow concrete pile by the elastic skin.

[0043] During the pouring process, the concrete is subjected to vibration and forming pressure, which compresses the elastic skin. In order to prevent the elastic skin from collapsing inward, an inner support plate is needed to provide stable support.

[0044] In this application, the inner support plate 1 is an L-shaped inner support plate, comprising four inner support plates arranged in a ring matrix, with an elastic skin attached to the outer periphery of the four inner support plates. Furthermore, the L-shaped inner support plate is made of angle iron.

[0045] The hollow structure of the concrete pile is designed as a basic square hollow structure. Specifically, the inner support plate 1 consists of four inner support plates arranged in a ring matrix, forming a basic square structure. The angle iron is integrally formed into a circular rod-shaped structure 2 at the bent inside corner. The circular rod-shaped structure 2 can be a solid rod or a hollow tube.

[0046] The tension rod is pulled by the tensioning plate assembly, and can directly pull the circular rod-shaped structure inside the angle iron. This application further provides a top support structure inside the inner support plate to maintain the supporting force of the inner support plate.

[0047] The top support structure can be arranged independently or in combination with the circular rod structure. By combining different top support structures with the inner support plate, the support stability of the cast core mold can be improved.

[0048] The following is a further explanation of the casting of the core mold.

[0049] In a specific embodiment of this case, the top support structure includes a top support rod 2 fixed to the inner wall of the inner support plate, a reduced diameter variable part 21 coaxially arranged in the middle of the top support rod 2, and a movable part 22 slidably installed on the outer side of the variable diameter part 21; a tension rod 23 is connected to the outer surface of the movable part 22.

[0050] Furthermore, the movable part 22 and the variable diameter part 21 are arranged at one end of the top support rod 2 along its length. Both ends of the movable part 22 along its sliding direction are provided with buffer springs 24, which press against the shaft end of the top support rod 2.

[0051] The inner wall of the inner support plate 1 is integrally provided with a top support rod 2. The top support rod 2 is a solid rod and can be integrally formed on the inner side of the inner support plate 1 of the angle steel structure, or it can be fixedly installed on the inside corner of the angle steel by welding or other methods. By setting the integral top support rod 2 at the inside corner of the angle steel structure, the deformation resistance of the angle steel is improved, and bending deformation towards the inside corner is avoided due to the compression of the poured concrete.

[0052] The top support rod 2 is segmented, with a variable diameter section 21 at one end along its length. The outer diameter of the variable diameter section 21 is smaller than the outer diameter of the top support rod 2. A cylindrical movable part 22 is fitted around the outer ring of the variable diameter section 21, allowing the movable part 22 to slide on the variable diameter section 21. A buffer spring 24 is mounted on the variable diameter section 21, comprising two springs arranged at both ends along the sliding direction of the movable part 22. The buffer springs 24 simultaneously abut against the shaft end of the top support rod 2. It is understood that since the top support rod 2 and the variable diameter section 21 are coaxially arranged, and the outer diameter of the buffer spring 24 is not greater than the outer diameter of the top support rod 2, the buffer spring 24 can provide shock absorption and reduce impact during the sliding process of the movable part.

[0053] Tensioning rod 23 is integrally connected to the movable part 22. Tensioning rod 23 is connected to one tensioning plate of the tensioning plate assembly. The end of the top support rod 2 furthest from tensioning rod 23 is longer than the length of the angle steel. The top support rod 2 is directly connected to another tensioning plate. Through the sliding of the tensioning plate, tensioning rod 23 pulls the movable part 22 to slide, providing axial traction force to the top support rod 2. This tensions the angle steel along its length, providing stable circumferential support force for the elastic skin and ensuring the stability of the hollow structure of the hollow concrete pile. Due to the presence of the buffer spring 24, no hard impact occurs at the axial ends of the movable part 22 and the top support rod 2 when the tensioning rod is pulled and released, improving the safety of the tensioned structure.

[0054] In another specific embodiment, the movable part 22 and the variable diameter part 21 can be arranged at both ends in the length direction of the top support rod 2, and the top support rod can be stretched by elastic traction at both ends at the same time.

[0055] like Figure 2 and Figure 3 As shown, Figure 2 A schematic diagram of the second structure of the hollow concrete pile core mold tensioning structure provided in this application; Figure 3 for Figure 2 A partial enlarged view of the tensioning structure of a hollow concrete pile core mold.

[0056] In a specific embodiment of this case, the top support structure includes a top support rod 2 fixed to the inner wall of the inner support plate 1, and the tension rod includes a first tensioning part 31 extending out of the axial end of the top support rod 2. The inner wall of the tensioning plate group 3 is provided with a second tensioning part 32 corresponding to the position of the first tensioning part 31.

[0057] It also includes 34 rigid support elastic members with a bending structure, with both ends of the support elastic members 34 fixed to the outer peripheral surfaces of the first tensioning part 31 and the second tensioning part 32 in the length direction;

[0058] It also includes a support spring 33, which is pressed between the shaft ends of the first tensioning part 31 and the second tensioning part 32.

[0059] The angle steel can also be directly pulled by the top support rod 2 on the inner wall of the inside corner, with the tension rod extending from the shaft end of the top support rod 2. In the preferred structure, the tension rod and the top support rod are an integral structure, with the tension rod being the part of the top support rod 2 that extends out of the end of the angle steel.

[0060] The end of the tension rod is designated as the first tensioning part 31, and a second tensioning part 32 corresponding to the position of the first tensioning part 31 is provided on the inner wall surface of the tensioning plate group 3. Specifically, the number of the first tensioning part 31 and the second tensioning part 32 is the same as the number of angle steels, and can be set to four groups.

[0061] To achieve flexible contact between the first tensioning section 31 and the second tensioning section 32 and avoid hard impacts during traction and release, a support spring 34 is coaxially connected to the shaft ends of the first tensioning section 31 and the second tensioning section 32 for elastic buffering during traction and release.

[0062] To ensure traction strength, a bent support elastic element 34 is provided, which avoids contact with the support spring 33. In the preferred structure, the support elastic element 34 is a V-shaped structure; in another structure, it can also be a U-shaped or trapezoidal structure.

[0063] The two free ends of the supporting elastic member 34 are respectively connected to the first tensioning part 31 and the second tensioning part 32.

[0064] like Figure 4 and Figure 5 As shown, Figure 4 A schematic diagram of the third structure of the hollow concrete pile core mold tensioning structure provided in this application; Figure 5 for Figure 4 A partial enlarged view of the tensioning structure of a hollow concrete pile core mold.

[0065] In a specific embodiment of this case, the top support structure includes a top support rod 2 fixed to the inner wall of the inner support plate 1, and the tension rod includes a first tensioning part 41 extending out of the axial end of the top support rod 2. The inner wall of the tensioning plate group 3 is provided with a second tensioning part 42 corresponding to the position of the first tensioning part 41.

[0066] An L-shaped insert 43 extends from the outer wall surface of the first tensioning section 41. The L-shaped insert 43 has a first support portion 431 extending radially along the first tensioning section and a guide portion 432 extending axially along the first tensioning section 41.

[0067] A second support portion 421 extends from the second tensioning portion 42 and falls between the guide portion 432 and the first tensioning portion 41;

[0068] A buffer spring 44 is provided between the first support part 431 and the second support part 421 to buffer the tension and compression of the two.

[0069] In this embodiment, the top support rod 2 is a solid rod, with both ends extending out of the inner support plate 1 to form a first tensioning section 41. The first tensioning section 41 is equipped with an L-shaped insert 43. The short side of the L-shaped insert 43 is a first support section 431, which is fixedly connected to the first tensioning section 41; the long side is a guide section 432, arranged substantially parallel to the top support rod 2, so that the shaft end of the top support rod 2 forms a hook-like structure. Specifically, a groove 434 is provided on the rod-shaped first tensioning section 41. The L-shaped insert 43 has a slider structure that cooperates with the groove 434, such as a T-shaped groove, a dovetail groove, or an inverted trapezoidal groove, so that the L-shaped insert 43 and the first tensioning section 41 form a detachable structure. A locking nut 433 is also provided at the end of the first tensioning section 41. After the L-shaped slider 43 is inserted into the first tensioning section 41, the locking nut 433 locks and positions the L-shaped insert 43.

[0070] The second tensioning section 42 is connected to the tensioning plate assembly 43 by a connecting rod. The extended end of the connecting rod is provided with a second support section 421. The second support section 421 extends between the guide section 432 and the top support rod 2. The second support section 421 and the first support section 431 form a hook-and-loop structure. A buffer spring 44 is provided between the first support section 431 and the second support section 421. When the inner support plate 1 is stretched, the first tensioning section 41 pulls on the second tensioning section 42 to provide stable support for the inner support plate 1. The buffer spring 44 provides buffering capacity when the first tensioning section 41 and the second tensioning section 42 are squeezed against each other.

[0071] like Figure 6 and Figure 7 As shown, Figure 6 A fourth structural schematic diagram of the hollow concrete pile core mold tensioning structure provided in this application; Figure 7 for Figure 6 A cross-sectional view of the assembly structure of the connector.

[0072] In a specific embodiment of this case, the top support structure includes a top support rod 2 fixed to the inner wall of the inner support plate 1. The top support rod 2 is a hollow tubular top support rod. The tension rod includes a threaded rod 6 passing through the top support rod and a connecting nut 7 fixed to the inner wall of the tension plate assembly. The threaded rod 7 and the connecting nut 7 are threadedly engaged.

[0073] The top support rod 2 is engaged with the inner support plate through the threaded rod 6.

[0074] In a specific embodiment of this case, a connector 8 is provided in the middle of the threaded rod 6. The threaded rod 6 includes a first threaded rod 61 and a second threaded rod 62. The ends of the first threaded rod 61 and the second threaded rod 62 are both fixedly fitted with a first threaded rod baffle 63 that extends radially.

[0075] The connector 8 includes a cylindrical connecting body 81, with a second screw baffle 82 extending from the inner end face of the connecting body, and a screw through hole 83 provided in the middle of the second screw baffle 82;

[0076] A compression spring 9 is also fitted on the threaded rod, pressing between the first screw baffle 63 and the second screw baffle 82.

[0077] The inner support plate is made of angle iron, with hollow tubular top support rods installed on the inner end face of the angle iron. There are four angle irons arranged opposite each other to form a rectangular structure. Each angle iron contains two threaded rods, one end of which can be threaded to the tensioning plate, and the other ends of the two threaded rods are installed in the connector 8. The threaded rods in the connector 8 have a first screw baffle 63. A compression spring 9 is also installed in the connector 8, abutting against the first threaded baffle 63 and the connector 8. The connector 8 is a cylindrical structure, with the connecting cylinder 81 forming a support structure for the compression spring 9 through the screw through hole 83 and the second screw baffle 82.

[0078] like Figure 8 and Figure 9 As shown, Figure 8 for Figure 6 A schematic diagram of another screw connection structure in the tensioning structure of the hollow concrete pile core mold; Figure 9 for Figure 8 Enlarged view of a portion of point A in the middle.

[0079] In a specific embodiment of this case, the threaded rod includes a first threaded rod 61 and a second threaded rod 62. The shaft ends of the first threaded rod 61 and the second threaded rod 62 are provided with an annular top support baffle 63 extending radially. The outer periphery of the annular top support baffle 63 is in support and cooperation with the inner wall surface of the top support rod.

[0080] Both the first threaded rod 61 and the second threaded rod 62 have spring support holes at their opposite ends, and compression springs 9 are press-fitted into the spring support holes.

[0081] In this embodiment, a connector may be omitted, and a spring may be used to connect the ends of the two threaded rods. The first and second threaded rods are arranged substantially coaxially and have spring support holes positioned opposite each other. A compression spring is installed inside the compression spring. Both the first and second threaded rods have annular top support plates at their opposite ends. The annular top support plates fit tightly against the inner walls of the top support rods to ensure support stability.

[0082] In the above embodiment, the angle iron is covered with an elastic skin, such as rubber skin, and a release agent or other material is applied to the outside of the elastic skin. By applying tension force to both ends of the angle iron along its length, the angle iron can withstand a certain weight of concrete cement. When demolding is required, after the pile product has hardened and formed, the tensioning mechanism releases the top support rod, and the angle iron rebounds under the elastic action of the internal spring structure, which will drive the elastic skin on the outside of the angle iron to a certain degree of displacement. The tensioning device then pulls the angle iron outward, completing the demolding.

[0083] A hollow concrete pile tensioning mold includes a mold body, a plurality of mold grooves for preparing hollow concrete piles are provided in the mold body, and a core mold for forming the hollow structure of the pile body is provided in the mold groove. The core mold has a hollow concrete pile core mold tensioning structure as described in any of the preceding claims.

[0084] Based on the hollow concrete pile core mold tensioning structure provided in the above embodiments, this utility model also provides a hollow concrete pile tensioning mold, including a mold body, a plurality of mold grooves for preparing hollow concrete piles are provided in the mold body, and a core mold for forming the hollow structure of the pile body is provided in the mold groove. The core mold provided on the hollow concrete pile tensioning mold has the hollow concrete pile core mold tensioning structure provided in the above embodiments.

[0085] Since the hollow concrete pile tensioning mold adopts the hollow concrete pile core mold tensioning structure of the above embodiment, please refer to the above embodiment for the beneficial effects brought by the hollow concrete pile core mold tensioning structure.

[0086] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A hollow concrete pile core mold tensioning structure, characterized in that, It includes a casting core mold and a tensioning plate assembly for tensioning and adjusting both ends of the casting core mold along its length. The casting core mold has a tensioning skeleton extending along its length and an elastic skin covering the outer periphery of the tensioning skeleton. The tension skeleton includes multiple inner support plates that are attached to the inner side of the elastic skin, and the inner wall surface of the inner support plate is provided with a support structure that supports the inner support plate radially. The casting core mold also includes tension rods extending from both ends of the tension skeleton along its length. The inner side of the tension plate assembly is also provided with a tension adjustment device that engages with the tension rods and tightens or loosens the top support structure through the tension rods.

2. A hollow core concrete core form tension structure according to claim 1, characterised in that, The top support structure includes a top support rod fixed to the inner wall of the inner support plate, a reduced-diameter variable section coaxially arranged in the middle of the top support rod, and a movable section that is slidably installed on the outside of the variable diameter section; the tension rod is connected to the outer surface of the movable section.

3. The hollow concrete pile core mold tensioning structure according to claim 2, characterized in that, The movable part and the variable diameter part are arranged at one end of the top support rod along its length. Both ends of the movable part along its sliding direction are provided with buffer springs, which are pressed against the shaft end of the top support rod.

4. A hollow core concrete panel tensioning structure according to claim 1, characterised in that, The top support structure includes a top support rod fixed to the inner wall of the inner support plate, and the tension rod includes a first tensioning part extending from the axial end of the top support rod. The inner wall of the tensioning plate assembly is provided with a second tensioning part corresponding to the position of the first tensioning part. It also includes a rigid support elastic member with a bent structure, wherein the two ends of the support elastic member in the length direction are fixed to the outer peripheral surfaces of the first tensioning part and the second tensioning part; It also includes a support spring, which is pressed between the shaft ends of the first tensioning section and the second tensioning section.

5. The hollow concrete pile core mold tensioning structure according to claim 1, characterized in that, The top support structure includes a top support rod fixed to the inner wall of the inner support plate, and the tension rod includes a first tensioning part extending from the axial end of the top support rod. The inner wall of the tensioning plate assembly is provided with a second tensioning part corresponding to the position of the first tensioning part. An L-shaped insert extends from the outer wall of the first tensioning section. The L-shaped insert has a first support portion extending radially along the first tensioning section and a guide portion extending axially along the first tensioning section. A second support portion extends from the second tensioning section and falls between the guide portion and the first tensioning section; A buffer spring is provided between the first support part and the second support part to buffer the tension and compression of the two.

6. The hollow concrete pile core mold tensioning structure according to claim 1, characterized in that, The top support structure includes a top support rod fixed to the inner wall of the inner support plate. The top support rod is a hollow tubular top support rod. The tension rod includes a threaded rod passing through the top support rod and a connecting nut fixed to the inner wall of the tension plate assembly. The threaded rod and the connecting nut are threadedly engaged. The top support rod engages with the inner support plate via the threaded rod.

7. A hollow core concrete panel tensioning structure according to claim 6, characterised in that, A connector is provided in the middle of the threaded rod. The threaded rod includes a first threaded rod and a second threaded rod. The ends of the first threaded rod and the second threaded rod are both fixedly equipped with a first threaded rod baffle that extends radially. The connector includes a cylindrical connecting body with a second screw baffle extending from the inner end face of the connecting body, and a screw through hole is provided in the middle of the second screw baffle; The threaded rod is also fitted with a compression spring that presses between the first screw baffle and the second screw baffle.

8. The hollow concrete pile core mold tensioning structure according to claim 6, characterized in that, The threaded rod includes a first threaded rod and a second threaded rod. The shaft ends of the first threaded rod and the second threaded rod are provided with an annular top support baffle that extends radially. The outer periphery of the annular top support baffle is in support and cooperation with the inner wall surface of the top support rod. Both the first threaded rod and the second threaded rod have spring support holes at their opposite ends, and compression springs are press-fitted into the spring support holes.

9. The hollow concrete pile core mold tensioning structure according to any one of claims 1-8, characterized in that, The inner support plate is an L-shaped inner support plate, and the inner support plate includes four inner support plates arranged in a ring matrix. The elastic skin is attached to the outer periphery of the four inner support plates.

10. A hollow concrete pile tensioning mold, comprising a mold body, wherein a plurality of mold grooves for preparing hollow concrete piles are provided within the mold body, and a core mold for forming the hollow structure of the pile is provided within the mold grooves, characterized in that, The core mold has a hollow concrete pile core mold tensioning structure as described in any one of claims 1-9.

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