Tensioning tool for building concrete pipe pile

Abstract

The utility model belongs to the field of pipe pile manufacturing, and particularly relates to a tensioning tool for building concrete pipe piles, which comprises a lower template, an upper template is fixedly connected to the upper surface of the lower template through a connecting piece, side plates are fixedly connected to two ends of the lower template, hydraulic machines are fixedly connected to the sides, close to each other, of the two side plates, and a hydraulic cylinder is fixedly connected to the hydraulic machine. Clamping pieces are fixedly connected to the faces, close to each other, of the two hydraulic machines. The reinforcing steel bar columns are fixedly connected to the outer side faces of the eight vertical side steel bar columns which are arranged in the annular array mode in the threaded mode, so that an internal tensioning plate in the original design is replaced, and the reinforcing effect on the concrete pipe pile can be guaranteed; and the poured concrete pipe pile can bear more prestress, the surface of the poured concrete pipe pile can be smooth and round, and the stability and durability of the concrete pipe pile are further enhanced.

Description

Technical Field

[0001] This utility model belongs to the field of pipe pile manufacturing, and in particular relates to a tensioning tool for building concrete pipe piles. Background Technology

[0002] Concrete pipe piles are generally load-bearing building components made of reinforced steel as a skeleton and cast in concrete. During use, concrete pipe piles are pressed into the ground, and the piles can be damaged by soil compression. Therefore, it is necessary to tension the steel bars during the casting process to induce a certain deformation. After casting, the rebound of the steel bars will give the concrete pipe pile corresponding prestress. During use, the prestress will protect the concrete pipe pile.

[0003] An existing tensioning tool for prestressed concrete pipe piles includes the following structure: CN102672821B discloses a tensioning tool for simultaneously manufacturing multiple prestressed concrete pipe piles, including a fixing plate and a locking plate respectively disposed at both ends of the pipe pile mold. The locking plate is provided with a tensioning screw, and the screw is provided with a locking nut for locking the screw. The end of the screw located inside the pipe pile mold is provided with a tensioning plate connected to the end plate of the reinforcing cage. It also includes a connecting device located between the ends of two reinforcing cages inside the pipe pile mold. The middle part of the connecting device is provided with a through hole with the same diameter as the inner diameter of the pipe pile. The connecting device is provided with a sealing structure to prevent concrete from flowing into the interior of the connecting device.

[0004] Existing tensioning tools for concrete pipe piles have the following shortcomings: The tensioning plate inside the mold in existing designs is intended to improve the concrete pipe pile's durability and ensure more uniform tension during the tensioning process. However, the internally fixed tensioning plate design can lead to surface damage during casting, preventing the production of a smooth and complete concrete pipe pile. Furthermore, the internally fixed tensioning plate reduces the prestressing capacity of the middle section of the concrete pipe pile, potentially causing further damage. The existing design of concrete pipe piles is prone to cracking in the construction environment. The tension plates at both ends rely solely on the connection with the screw rod, which weakens the relationship between the steel reinforcement and the tension plate, reduces the stress during the tensioning process, and results in insufficient tensioning effect of the steel reinforcement. The existing design connects the screw rod and the locking plate with a locking nut. On the one hand, the large locking nut increases labor costs during the transportation and installation of the concrete pipe pile during production. On the other hand, the design of the locking nut weakens the tensioning effect of the screw rod, and will cause wear to the screw rod and locking nut during long-term tensioning. Utility Model Content

[0005] The purpose of this invention is to address the issues raised in the background art, where the internally fixed tensioning plate is designed inside the concrete pipe pile. On one hand, this design leads to surface damage during the casting process, preventing the production of a smooth and complete concrete pipe pile. On the other hand, the internally fixed tensioning plate reduces the prestressing capacity of the middle section of the concrete pipe pile, making it prone to cracking in the construction environment. Furthermore, existing designs for tensioning plates at both ends of the concrete pipe pile rely solely on connections to bolts, weakening the relationship between the reinforcing steel and the tensioning plate, thus reducing the stress during tensioning and resulting in insufficient tensioning effect. Additionally, the large locking nuts in the concrete pipe pile production process incur significant labor costs during transportation and installation, and prolonged tensioning causes wear on the bolts and locking nuts. This invention provides a tensioning tool for building concrete pipe piles.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a tensioning tool for concrete pipe piles in construction, comprising a lower template, an upper template fixedly connected to the upper surface of the lower template via connectors, side plates fixedly connected to both ends of the lower template, hydraulic presses fixedly connected to the adjacent sides of the two side plates, and snap-fit ​​components fixedly connected to the adjacent sides of the two hydraulic presses. The snap-fit ​​component has an outer groove on the side away from the side plates, and an inner groove inside the snap-fit ​​component, the inner groove being perpendicular to the outer groove. The inner and outer slots are interconnected. The snap-fit ​​component is connected to a snap-fit ​​shaft through the inner and outer slots. A tension column is fixedly connected to the side of the snap-fit ​​shaft away from the side plate. The tension column is provided with a No. 1 outer diameter thread on the end away from the side plate. The tension column is threaded to a tensioning connector through the No. 1 outer diameter thread. The tensioning connector is provided with a slot on the side near the side plate. The slot is provided with a No. 3 inner diameter thread. The tensioning connector is fixedly connected to a tensioning fixing assembly. The tensioning fixing assembly is fixedly connected to a steel reinforcement skeleton assembly of the concrete pipe pile.

[0007] Furthermore, the steel reinforcement frame assembly includes vertical steel reinforcement columns and reinforcing steel reinforcement columns. The eight vertical steel reinforcement columns are arranged in a circular array. The reinforcing steel reinforcement columns are fixedly connected to the outer surfaces of the eight vertical steel reinforcement columns in a threaded manner. Fixed terminals are fixedly connected to both ends of the vertical steel reinforcement columns. The outer surfaces of the fixed terminals are provided with No. 2 outer diameter threads.

[0008] Furthermore, the tensioning and fixing assembly includes a tensioning connecting plate and a fixing plate. On the side of the fixing plate near the side plate, eight No. 1 connecting holes and eight smooth connecting holes are evenly arranged in a circular array. The No. 1 connecting holes and smooth connecting holes are spaced apart. The No. 1 connecting hole has a No. 1 inner diameter thread inside. The smooth connecting hole has an inner hole nut passing through it. One end of the inner hole nut is engaged with the side of the fixing plate near the side plate. The other end of the inner hole nut has an inner hole. The inner hole thread is connected to the No. 2 outer diameter thread on the outer side of the fixing terminal.

[0009] Furthermore, the tensioning connector is fixedly connected to the side of the tensioning connecting plate near the side plate. The side of the tensioning connecting plate near the fixed plate has eight grooves arranged in a circular array. The side of the tensioning connecting plate near the tensioning connector has eight No. 2 connecting holes arranged in a circular array. A screw passes through the No. 2 connecting hole, and the screw is threadedly connected to the No. 1 inner diameter thread inside the No. 1 connecting hole.

[0010] Furthermore, the groove engages with the protruding end of the inner nut, the inner diameters of the second connecting hole and the first connecting hole are equal and their positions correspond to each other, and the length of the threaded post of the screw is equal to the sum of the thicknesses of the tension connecting plate and the fixing plate.

[0011] Furthermore, the diameters of the tensioning connecting plate and the fixing plate are equal, and the diameter of the tensioning connecting plate is 50cm longer than the furthest distance between the two vertical steel bars.

[0012] Furthermore, the width and length of the outer and inner grooves are both 10cm greater than the length and diameter of the card shaft.

[0013] Furthermore, the length of the inner hole nut is equal to the thickness of the fixing plate, and the length of the fixing terminal is 5cm less than the length of the inner hole.

[0014] Compared with existing technologies, the advantages of this tensioning tool for concrete pipe piles in construction are:

[0015] 1. This utility model replaces the internal tension plate in the original design by setting up reinforcing steel columns that are fixedly connected in a threaded manner to the outer side of eight vertical steel columns arranged in a ring array. While ensuring that the concrete pipe pile can be reinforced, the cast concrete pipe pile can withstand more prestress and the surface of the cast concrete pipe pile is smooth and rounded, which further enhances the stability and durability of the concrete pipe pile.

[0016] 2. This utility model sets a fixed terminal at the end of the steel column and connects it to the first connection hole of the fixed plate through the inner hole nut. The connection is reinforced by tensioning the connection plate. This further strengthens the tension stress of the concrete pipe pile in strengthening the connection with the steel bars in the concrete pipe pile, so that the concrete pipe pile can obtain more prestress.

[0017] 3. This utility model provides an outer groove and an inner groove on the snap-fit ​​component. The snap-fit ​​shaft on the tension column passes through the outer groove and then engages with the inner groove through rotation. This allows the device to maintain a good connection while minimizing wear and tear, simplifying operation and improving usability and production efficiency. Attached Figure Description

[0018] Figure 1 This is a structural schematic diagram of a tensioning tool for concrete pipe piles in construction provided by this utility model;

[0019] Figure 2 This is an external front view of a tensioning tool for concrete pipe piles provided by this utility model;

[0020] Figure 3 This is a schematic diagram of the internal cross-section of a tensioning tool for concrete pipe piles in construction, provided by this utility model.

[0021] Figure 4 This is a simplified internal structural diagram of a tensioning tool for concrete pipe piles in construction, provided by this utility model.

[0022] Figure 5 yes Figure 3 Enlarged view of section A;

[0023] Figure 6 yes Figure 4 Enlarged view of section B;

[0024] Figure 7 yes Figure 3 Enlarged view of section C.

[0025] In the diagram, 1 is the lower template, 2 is the upper template, 3 is the side plate, 4 is the snap-fit ​​connector, 5 is the hydraulic press, 6 is the vertical steel bar column, 7 is the reinforcing steel bar column, 8 is the tensioning connection plate, 9 is the fixing plate, 10 is the tensioning connector, 11 is the tension column, 12 is the snap-fit ​​shaft, 13 is the outer groove, 14 is the fixing terminal, 15 is the screw, 16 is the inner hole nut, 17 is the first connecting hole, 18 is the first inner diameter thread, 19 is the groove, 20 is the inner groove, 21 is the third inner diameter thread, 22 is the first outer diameter thread, 23 is the second connecting hole, 24 is the second outer diameter thread, and 25 is the inner hole. Detailed Implementation

[0026] The following embodiments are for illustrative purposes only and are not intended to limit the scope of this invention.

[0027] like Figures 1-7 As shown, a tensioning tool for concrete pipe piles includes a lower template 1. An upper template 2 is fixedly connected to the upper surface of the lower template 1 via connectors. Side plates 3 are fixedly connected to both ends of the lower template 1. Hydraulic presses 5 are fixedly connected to the side of the two side plates 3 that are close to each other. A snap-fit ​​component 4 is fixedly connected to the side of the two hydraulic presses 5 that are close to each other. The snap-fit ​​component 4 has an outer groove 13 on the side away from the side plate 3 and an inner groove 20 inside the snap-fit ​​component 4. The inner groove 20 and the outer groove 13 are perpendicular to each other and communicate with each other. A snap-fit ​​shaft 12 is engaged with the snap-fit ​​component 4 through the inner groove 20 and the outer groove 13. A tension column 11 is fixedly connected to the side of the snap-fit ​​shaft 12 that is away from the side plate 3. The end of the tension column 11 that is away from the side plate 3... The tension column 11 is threaded with an outer diameter thread 22. The tensioning column 11 is threaded to a tensioning connector 10 through the outer diameter thread 22. The tensioning connector 10 has a slot on the side near the side plate 3. The slot has an inner diameter thread 21. The tensioning connector 10 is fixedly connected to a tensioning fixing component. The tensioning fixing component is fixedly connected to a steel reinforcement skeleton component of the concrete pipe pile. By setting an outer slot 13 and an inner slot 20 on the snap-fit ​​part 4, the snap-fit ​​shaft 12 set on the tension column 11 passes through the outer slot 13 and then engages with the inner slot 20 through rotation. This allows the device to maintain a good connection relationship while minimizing wear, simplifying the operation steps of the device, and thus improving the use and production efficiency of the device.

[0028] The steel reinforcement frame assembly includes vertical steel reinforcement columns 6 and reinforcing steel reinforcement columns 7. The eight vertical steel reinforcement columns 6 are arranged in a ring array. The reinforcing steel reinforcement columns 7 are threadedly fixed to the outer surface of the eight vertical steel reinforcement columns 6. Fixed terminals 14 are fixedly connected to both ends of the vertical steel reinforcement columns 6. The outer surface of the fixed terminals 14 is provided with a No. 2 outer diameter thread 24. By setting the reinforcing steel reinforcement columns 7 to be threadedly fixed to the outer surface of the eight vertical steel reinforcement columns 6 arranged in a ring array, the internal tensioning plate in the original design is replaced. While ensuring that the concrete pipe pile can be reinforced, the cast concrete pipe pile can withstand more prestress and the surface of the cast concrete pipe pile is smooth and rounded, which further enhances the stability and durability of the concrete pipe pile.

[0029] The tensioning fixing assembly includes a tensioning connecting plate 8 and a fixing plate 9. On the side of the fixing plate 9 near the side plate 3, eight first-order connecting holes 17 and eight smooth connecting holes are evenly arranged in a circular array. The first-order connecting holes 17 and the smooth connecting holes are spaced apart. The first-order connecting holes 17 have a first-order inner diameter thread 18 inside, and the smooth connecting holes have an inner hole nut 16 passing through them. One end of the inner hole nut 16 is engaged with the side of the fixing plate 9 near the side plate 3, and the other end has an inner hole 25. The inner hole 25 is threaded onto a second-order outer diameter thread 24 on the outer surface of the fixing terminal 14. The length of the inner hole nut 16 is equal to the thickness of the fixing plate 9, and the length of the fixing terminal 14 is 5 cm shorter than the length of the inner hole 25. A tensioning connector 10 is fixedly connected to the side of the tensioning connecting plate 8 near the side plate 3. On the side of the tensioning connecting plate 8 near the fixing plate 9, eight recesses are arranged in a circular array. The groove 19 and the tensioning connecting plate 8 have eight No. 2 connecting holes 23 arranged in a ring array on the side near the tensioning connecting member 10. A screw 15 passes through the No. 2 connecting hole 23 and is threaded into the No. 1 inner diameter thread 18 inside the No. 1 connecting hole 17. The groove 19 is engaged with the protruding end of the inner hole nut 16. The inner diameters of the No. 2 connecting holes 23 and the No. 1 connecting hole 17 are equal and their positions correspond to each other. The length of the threaded post of the screw 15 is equal to the sum of the thicknesses of the tensioning connecting plate 8 and the fixing plate 9. By setting a fixing terminal 14 at the end of the steel column, it can be connected to the No. 1 connecting hole 17 on the fixing plate 9 through the inner hole nut 16 and reinforced by the tensioning connecting plate 8. In strengthening the connection with the steel bars in the concrete pipe pile, the tension stress of the concrete pipe pile is further strengthened, so that the concrete pipe pile obtains more prestress.

[0030] The tensioning connecting plate 8 and the fixing plate 9 have the same diameter. The diameter of the tensioning connecting plate 8 is 50cm longer than the furthest distance between the two vertical steel bars 6, which can make the concrete pipe pile have a relatively sufficient thickness in the subsequent casting process.

[0031] The width and length of the outer groove 13 and the inner groove 20 are both 10cm longer than the length and diameter of the retaining shaft 12, ensuring that the retaining shaft can enter the retaining member 4 through the outer groove 13 and can be engaged and connected to the inner groove 20 by rotation.

[0032] The working principle of this utility model is as follows:

[0033] Eight vertical reinforcing steel columns 6 are arranged in a circular array. Reinforcing steel columns 7 are threadedly fixed to the outer surfaces of the eight vertical reinforcing steel columns 6, thus forming the reinforcing steel skeleton of the concrete pipe pile. Fixed terminals 14 are fixedly connected to both ends of each vertical reinforcing steel column 6. The outer surfaces of the fixed terminals 14 are provided with No. 2 outer diameter threads 24. By using threaded reinforcing steel columns 7 fixed to the outer surfaces of the eight vertical reinforcing steel columns 6 arranged in a circular array, the original internal tensioning plate is replaced. This ensures that the concrete pipe pile is reinforced while allowing the cast concrete pipe pile to withstand greater loads. The increased prestressing results in a smooth and rounded surface on the cast concrete pipe pile, further enhancing its stability and durability. The reinforcing steel frame of the concrete pipe pile is placed in the lower formwork 1, and then the fixing plate 9 is placed inside the lower formwork 1. The smooth connecting hole on the fixing plate 9 is fitted onto the fixing terminal 14, and the inner nut 16 is threaded through the smooth connecting hole and connected to the second outer diameter thread 24 on the outer side of the fixing terminal 14. This allows the fixing plate 9 to be fixed to the vertical reinforcing steel column 6. Finally, screws 15 are passed through the second connecting hole 23 on the tensioning connecting plate 8, and... Screw 15 is threaded into the first inner diameter thread 18 inside the first connecting hole 17. A fixed terminal 14 is installed at the end of the reinforcing bar column, and can be connected to the first connecting hole 17 on the fixing plate 9 via an inner nut 16. The connection is reinforced by the tension connecting plate 8. This strengthens the connection with the reinforcing bars in the concrete pipe pile, further enhancing the tension stress on the concrete pipe pile and allowing it to obtain more prestress. The tension connector 10, with a third inner diameter thread 21, is threaded into the first outer diameter thread 22 at the end of the tension column 11. The hydraulic press 5 is adjusted to achieve the locking mechanism. The outer slot 13 on the component 4 allows the retaining shaft 12 to be inserted into it. After rotation, the retaining shaft 12 engages with the inner slot 20. By setting the outer slot 13 and the inner slot 20 on the retaining component 4, and by having the retaining shaft 12 on the tension column 11 pass through the outer slot 13 and then engage with the inner slot 20 through rotation, the device maintains a good connection while minimizing wear and tear, simplifying the operation steps, and improving the use and production efficiency of the device. Finally, concrete is poured on the steel reinforcement frame, and the upper template 2 is connected to the lower template 1. The hydraulic press 5 is then controlled to perform the tensioning process.

[0034] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A tensioning tool for a building concrete pipe pile, characterized in that, The utility model provides a concrete pipe pile's steel reinforcement framework assembly, including lower mould plate (1), the upper surface of lower mould plate (1) is fixedly connected with upper mould plate (2) through connecting piece, both ends of lower mould plate (1) are fixedly connected with side plate (3), and the side of two side plate (3) is fixedly connected with hydraulic press (5) close to each other, and the side of two hydraulic press (5) is fixedly connected with clamping piece (4) close to each other, be equipped with outer rebate (13) on the side of clamping piece (4) away from side plate (3), be equipped with inner rebate (20) in clamping piece (4), and inner rebate (20) is perpendicular with outer rebate (13), and inner rebate (20) is intercommunicated with outer rebate (13), and clamping piece (4) is connected with clamping shaft (12) through inner rebate (20) and outer rebate (13), and clamping shaft (12) is fixedly connected with tension column (11) on the side away from side plate (3), and be equipped with one outer diameter thread (22) on the end of tension column (11) away from side plate (3), and tension column (11) is threadedly connected with tension connecting piece (10) through one outer diameter thread (22), and the side of tension connecting piece (10) is equipped with rebate close to side plate (3), and be equipped with three inner diameter threads (21) in the inside of rebate, and tension connecting piece (10) is fixedly connected with tension fixing assembly, and tension fixing assembly is fixedly connected with concrete pipe pile's steel reinforcement framework assembly.

2. The tensioning tool for building concrete pipe piles according to claim 1, characterized in that, The steel reinforcement framework assembly includes vertical edge steel column (6) and reinforcing steel column (7), eight vertical edge steel columns (6) are arranged in a ring array, the reinforcing steel column (7) is fixedly connected to the outer side of the eight vertical edge steel columns (6) in a threaded manner, the ends of the vertical edge steel columns (6) are fixedly connected with fixed terminals (14), and the outer side of the fixed terminals (14) is provided with a second outer diameter thread (24).

3. The tensioning tool for building concrete pipe piles according to claim 2, characterized in that, The tension fixing assembly includes a tension connecting plate (8) and a fixed plate (9), the fixed plate (9) is uniformly provided with eight first connecting holes (17) and eight smooth connecting holes in a ring array on the side close to the side plate (3), the first connecting holes (17) and the smooth connecting holes are arranged at intervals, the first connecting holes (17) are provided with a first inner diameter thread (18) inside, the smooth connecting holes are penetrated by an inner hole nut (16), one end of the inner hole nut (16) is clamped and connected to the side of the fixed plate (9) close to the side plate (3), the other end of the inner hole nut (16) is provided with an inner hole (25), and the inner hole (25) is threadedly connected to the second outer diameter thread (24) on the outer side of the fixed terminal (14).

4. The tensioning tool for building concrete pipe piles according to claim 3, characterized in that, The tension connecting piece (10) is fixedly connected to the tension connecting plate (8) near one side of the side plate (3), eight recesses (19) are arranged in a ring array on the side of the tension connecting plate (8) near the fixed plate (9), eight No. 2 connecting holes (23) are arranged in a ring array on the side of the tension connecting plate (8) near the tension connecting piece (10), the No. 2 connecting hole (23) penetrates the screw (15), and the screw (15) is screw-connected to the No. 1 inner diameter thread (18) in the No. 1 connecting hole (17).

5. The tensioning tool for building concrete pipe piles according to claim 4, characterized in that, The recess (19) is clamped and connected to the protruding end of the inner hole nut (16), the inner diameters of the No. 2 connecting hole (23) and the No. 1 connecting hole (17) are equal and the positions correspond to each other, and the length of the threaded column of the screw (15) is equal to the sum of the thicknesses of the tension connecting plate (8) and the fixed plate (9).

6. The tensioning tool for building concrete pipe piles according to claim 3, characterized in that, The diameters of the tension connecting plate (8) and the fixed plate (9) are equal, and the diameter of the tension connecting plate (8) is longer than the farthest distance between the two vertical steel columns (6) by 50 cm.

7. The tensioning tool for building concrete pipe piles according to claim 1, characterized in that, The widths and lengths of the outer slot (13) and the inner slot (20) are all longer than the length and diameter length of the clamping shaft (12) by 10 cm.

8. The tensioning tool for building concrete pipe piles according to claim 3, characterized in that, The length of the inner hole nut (16) is equal to the thickness of the fixed plate (9), and the length of the fixed terminal (14) is less than the length of the inner hole (25) by 5 cm.

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