A steel pipe pile

Abstract

The application relates to the technical field of building structures, and provides a steel pipe pile, which comprises an upper pipe pile, a drill rod body, an outer sleeve, a connecting shell and a lower inner pipe; the lower inner pipe is arranged in the upper pipe pile; one end of the connecting shell is connected with the upper pipe pile, and the other end is connected with the lower inner pipe; the lower inner pipe is detachably connected with the drill rod body; the outer wall of the lower inner pipe and the connecting shell is wrapped with the outer sleeve; the outer sleeve is provided with a connecting hole communicating with the circumferential wall surface of the lower inner pipe; a lock piece movably arranged in the connecting hole is arranged; and the lock piece provides locking of the outer sleeve and the lower inner pipe. The application has the effects of stable connection and convenient disassembly and assembly.

Description

Technical Field

[0001] This application relates to the field of building structure technology, and in particular to a steel pipe pile. Background Technology

[0002] Steel pipe piles are construction materials composed of steel pipes, tongue and groove joints, and tongue and groove pins, which can be used to contain water, soil, and sand. As a major vertical load-bearing support component, steel pipe piles have high load-bearing capacity and strong stability. When steel pipe piles need to be lengthened and connected, connecting sleeves and other structures are required to connect multiple sections of steel pipe piles into one. However, some steel pipe piles have high stress requirements after connection, and it is necessary to prevent the steel pipe piles from breaking due to torsion, pressure, etc. When providing a stable connection structure to increase the stress requirements, the connection structure is too complex, the manufacturing cost is high, and the assembly is inconvenient. Summary of the Invention

[0003] To address the aforementioned problems, this application provides a steel pipe pile.

[0004] The steel pipe pile provided in this application adopts the following technical solution: A steel pipe pile includes an upper pipe pile, a drill rod body, an outer sleeve, a connecting shell, and a lower inner tube; the lower inner tube is fitted inside the upper pipe pile; one end of the connecting shell is connected to the upper pipe pile, and the other end is connected to the lower inner tube; the lower inner tube is detachably connected to the drill rod body; the outer sleeve is wrapped around the outer walls of the lower inner tube and the connecting shell, and the circumferential walls of the outer sleeve and the lower inner tube are provided with interconnecting holes, and the connecting holes are provided with movable locking elements, which provide locking between the outer sleeve and the lower inner tube.

[0005] By adopting the above technical solution, after the upper pipe pile is sleeved with the lower inner pipe, the two are fixedly connected by the connecting pipe shell. The lower inner pipe extends to the drill rod body and is fixedly connected to the drill rod body. Then, the outer sleeve is sleeved on the connecting pipe shell and the lower inner pipe, and is simultaneously locked by several locking parts in several connection holes to provide a stable connection between the two. When disassembly and assembly are required, the locking parts are removed, the outer sleeve can be staggered from the lower inner pipe, and the lower inner pipe can be disassembled from the drill rod body to achieve the effect of convenient disassembly and assembly.

[0006] Optionally, the locking element includes a movable torque-shear bolt and a nut; the torque-shear bolt passes through the connecting hole, and the nut is located outside the outer sleeve and screwed onto the torque-shear bolt.

[0007] By adopting the above technical solution, the nut is located outside the outer tube and screwed to the torsion shear bolt, thereby fixing the lower inner tube and the outer tube together. By setting multiple locking parts and multiple connecting holes, the stability of the connection is improved.

[0008] Optionally, the locking component further includes a positioning cone pin, a positioning washer, and a positioning expansion ring; the positioning cone pin passes through the connecting hole, and the torque-shear bolt extends outward from the outer sleeve through the positioning cone pin; the positioning washer is fitted onto the torque-shear bolt and is larger than the connecting hole; the positioning expansion ring is fitted onto the torque-shear bolt and engages with the positioning washer.

[0009] By adopting the above technical solution, the positioning cone pin serves to provide anti-loosening properties. After the positioning cone pin fills the connection hole, the torsion shear bolt is then inserted, preventing it from swinging or loosening within the connection hole. This ensures the stability of the steel pipe pile during application. Furthermore, the positioning washer and positioning expansion ring distribute the pressure of the torsion shear bolt to the inner wall of the lower inner tube, thereby providing a tighter locking force when the nut is tightened, further improving the stability of the connection.

[0010] Optionally, the inner circumferential wall of the lower inner tube is provided with a plurality of inner key strips.

[0011] By adopting the above technical solution, the inner key strip can fasten the lower inner tube and the outer tube, and the circumferential fixation between the lower inner tube and the outer tube can transmit torque, while providing a certain elastic buffering effect.

[0012] Optionally, at least one drill pipe body is provided.

[0013] By adopting the above technical solution, when more than one drill rod is installed, it can be adapted to steel pipe pile lengths that meet different requirements.

[0014] Optionally, the lower inner tube is further provided with a drive head sleeve and a transition plate at the end away from the drill rod body, and the transition plate is provided with an external hexagonal joint at one end; the drive head sleeve is located between the transition plate and the upper pipe pile.

[0015] By adopting the above technical solution, the drive head sleeve is located between the transition plate and the upper pipe pile, so that when the transition plate is under stress, the drive head sleeve provides resistance to compression and torsion, and the external hexagonal joint provides access to the drive equipment, so that the whole steel pipe pile can be rotated and drilled into the ground.

[0016] Optionally, a gap is provided between the drive head sleeve and the lower inner tube, and a plurality of inner key bars and reverse pull key bars are provided in the gap.

[0017] By adopting the above technical solution, the inner key bar provides circumferential fixation between the lower inner tube and the drive head sleeve to transmit torque, while also providing a certain elastic buffering effect. The anti-pull key bar can prevent the transition plate and the lower inner tube from being pulled from the upper pipe pile, thereby providing tensile strength and improving the connection stability of the overall steel pipe pile structure.

[0018] Optionally, the outer wall of the external hexagonal joint is provided with a plurality of stiffening plates, and the stiffening plates are fixedly connected to the transition plate.

[0019] By adopting the above technical solution, the stiffening plate is set along the circumference of the hexagonal joint. The stiffening plate can provide compressive and torsional resistance, making the connection between the hexagonal joint and the transition plate more stable.

[0020] In summary, this application includes at least one of the following beneficial technical effects: 1. After the upper pipe pile is fitted with the lower inner pipe, the two are fixedly connected by the connecting pipe shell. The lower inner pipe extends to the drill rod body and is fixedly connected to the drill rod body. Then, the outer sleeve is fitted onto the connecting pipe shell and the lower inner pipe, and is simultaneously locked by several locking parts in several connection holes to provide a stable connection between the two. When disassembly and assembly are required, the locking parts are removed, the outer sleeve can be offset from the lower inner pipe, and the lower inner pipe can be disassembled from the drill rod body to achieve the effect of convenient disassembly and assembly. 2. The nut is located outside the outer tube and is screwed to the torque shear bolt, thereby fixing the lower inner tube and the outer tube together. Multiple locking parts and multiple connecting holes are provided to improve the stability of the connection. 3. The purpose of the positioning cone pin is to provide anti-loosening. After the positioning cone pin fills the connection hole, the torque shear bolt is inserted to prevent the torque shear bolt from swinging or loosening in the connection hole, thus ensuring the stability of the steel pipe pile during application. The positioning washer and positioning expansion ring further distribute the pressure of the torque shear bolt to the inner wall of the lower inner tube, so that the torque bolt can provide a tighter locking force when the nut is tightened, further improving the stability of the connection. 4. The inner key strip can fasten the inner tube and the outer tube together, and the circumferential fixation between the inner tube and the outer tube can transmit torque, while providing a certain elastic buffering effect. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural schematic diagram of a steel pipe pile in one embodiment of this application; Figure 2 This is a schematic diagram of the first cross-sectional structure of the outer sleeve in some embodiments of this application; Figure 3 This is a schematic diagram of a second cross-sectional structure of the outer sleeve in some embodiments of this application; Figure 4 This is a schematic diagram of the cross-sectional structure of the drive head sleeve in some embodiments of this application; The markings in the attached diagram are as follows: 1. Upper pipe pile, 2. Drill rod body, 21. Blade, 3. Outer sleeve, 31. Connecting hole, 4. Shell tube, 5. Lower inner tube, 6. Locking element, 61. Torque-shear bolt, 62. Nut, 63. Positioning cone pin, 64. Positioning washer, 65. Positioning expansion ring, 66. Inner key strip, 67. Back pull key strip, 7. Drive head sleeve, 8. Transition plate, 9. External hexagonal joint, 91. Rib plate. Detailed Implementation

[0022] The following specific examples illustrate the implementation methods of this application. Those skilled in the art can easily understand other advantages and effects of this application from the information disclosed herein. This application can also be implemented or applied through other different specific embodiments, and various details in this application can be modified or changed according to different viewpoints and application systems without departing from the spirit of this application. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.

[0023] The embodiments of this application will now be described in detail with reference to the accompanying drawings, so that those skilled in the art can easily implement the application. This application may be embodied in many different forms and is not limited to the embodiments described herein.

[0024] In this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics represented in connection with that embodiment or example, which are included in at least one embodiment or example of this application. Furthermore, the specific features, structures, materials, or characteristics represented may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate different embodiments or examples represented in this application, as well as features of different embodiments or examples.

[0025] Furthermore, the terms "first" and "second" are used only to indicate an objective and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the representation of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0026] Throughout this specification, when it is said that a device is "connected" to another device, this includes not only "direct connection" but also "indirect connection" by placing other components in between. Furthermore, when it is said that a device "comprises" a certain constituent element, unless otherwise stated otherwise, this does not exclude other constituent elements, but rather implies that other constituent elements may be included.

[0027] The following is in conjunction with the appendix Figure 1 -Appendix Figure 4 This application will be described in further detail below.

[0028] This application discloses a steel pipe pile.

[0029] A type of steel pipe pile, reference Figure 1 As shown, it includes an upper pipe pile 1, a drill rod body 2, an outer casing 3, a connecting shell 4, and a lower inner pipe 5; the upper pipe pile 1 and the drill rod body 2 are connected to form an integral steel pipe pile, and the length of the upper pipe pile 1 is extended by the drill rod body 2, so that the length of the overall steel pipe pile can be adjusted.

[0030] The upper pipe pile 1 is fitted with a lower inner pipe 5, that is, the outer diameter of the lower inner pipe 5 matches the inner diameter of the upper pipe pile 1, so that the lower inner pipe 5 can be inserted into the upper pipe pile 1. One end of the pipe shell is connected to the upper pipe pile 1, and the other end is connected to the lower inner pipe 5. The connection method can be threaded or snap-fit, depending on the requirements. The pipe shell is used to connect the upper pipe pile 1 and the lower inner pipe 5, prevent the lower inner pipe 5 from moving along the inside of the upper pipe pile 1, and ensure the stability of the connection.

[0031] The lower inner tube 5 is detachably connected to the drill rod body 2. The detachable connection can be a threaded connection or a snap-fit ​​connection. One end of the drill rod body 2 can be equipped with a blade 21 to facilitate drilling into the ground by rotation.

[0032] The lower inner tube 5 and the outer wall of the connecting tube shell are wrapped with or fitted with an outer tube 3. The outer tube 3 and the lower inner tube 5 have interconnected connecting holes 31 on their circumferential walls. The connecting holes 31 are provided with movable locking parts 6, which provide locking between the outer tube 3 and the lower inner tube 5.

[0033] Specifically, after the upper pipe pile 1 is fitted with the lower inner pipe 5, the two are fixedly connected by the connecting pipe shell. The lower inner pipe 5 extends to the drill rod body 2 and is fixedly connected to the drill rod body 2. Then, the outer sleeve 3 is fitted onto the connecting pipe shell and the lower inner pipe 5, and is simultaneously locked by several locking parts 6 in several connecting holes 31 to provide a stable connection between the two. When disassembly and assembly are required, the locking parts 6 are removed, the outer sleeve 3 can be offset from the lower inner pipe 5, and the lower inner pipe 5 can be disassembled from the drill rod body 2 to achieve the effect of convenient disassembly and assembly.

[0034] On the other hand, after the lower inner tube 5 is connected to the upper pipe pile 1 through the connecting shell tube 4, it does not extend to the outer shell tube 3. Instead, another set of connecting shell tubes 4 is set, which replaces the lower inner tube 5. The connecting shell tube 4 has a connecting hole 31, which replaces the lower inner tube 5 and is detachably connected to the drill rod body 2. This method allows the lower inner tube 5 to be disassembled without affecting the drill rod body 2. After the locking part 6 is removed, the other set of connecting shell tubes 4 can be separated from the outer shell tube 3 together with the drill rod body 2. Both implementation methods can achieve the effect of convenient disassembly and assembly and stable connection. The specific implementation method is determined according to the requirements.

[0035] Further reference Figure 2 As shown, the locking element 6 includes a movable torque-shear bolt 61 and a nut 62; the torque-shear bolt 61 passes through the connection hole 31 between the lower inner tube 5 and the outer tube 3 from the inside of the lower inner tube 5, and the nut 62 is located outside the outer tube 3 and screwed to the torque-shear bolt 61, thereby fixing the lower inner tube 5 and the outer tube 3 together. By setting multiple locking elements 6 and multiple connection holes 31, the stability of the connection is improved.

[0036] In some embodiments, reference Figure 3 As shown, the locking component 6 also includes a positioning cone pin 63, a positioning washer 64, and a positioning expansion ring 65; the positioning cone pin 63 passes through the connecting hole 31, and the positioning cone pin 63 is provided with an insertion hole for the torsion shear bolt 61 to pass through. The torsion shear bolt 61 passes through the insertion hole through the positioning cone pin 63 and extends outward to the outside of the outer sleeve 3.

[0037] The positioning washer 64 is fitted onto the torque shear bolt 61 and is larger than the connecting hole 31, so that the positioning washer 64 cannot be dislodged from the connecting hole 31. The positioning expansion ring 65 is fitted onto the torque shear bolt 61 and engages with the positioning washer 64. The positioning expansion ring 65 is used to make the torque shear bolt 61 fit with the positioning washer 64, so as to ensure the stability of the torque shear bolt 61 being pressed against the positioning washer 64 by the positioning expansion ring 65.

[0038] The function of the positioning cone pin 63 is to provide anti-loosening. After the positioning cone pin 63 fills the connection hole 31, the torque shear bolt 61 is inserted to prevent it from swinging or loosening in the connection hole 31, thus ensuring the stability of the steel pipe pile during application. The positioning washer 64 and the positioning expansion ring 65 disperse the pressure of the torque shear bolt 61 to the inner wall of the lower inner tube 5, so that when the torque bolt is tightened with the nut 62, it can provide a tighter locking force, further improving the stability of the connection.

[0039] Furthermore, refer to Figure 3As shown, the inner wall of the lower inner tube 5 is provided with several inner key strips 66. The inner key strips 66 can fasten the lower inner tube 5 and the outer tube 3. The circumferential fixation between the lower inner tube 5 and the outer tube 3 is used to transmit torque, while providing a certain elastic buffering effect. That is, when the outer tube 3 rotates or shifts and generates torque, the torsion path of the torsion shear bolt 61 is blocked by the limiting effect of the inner key strips 66, so that it cannot be twisted, thereby improving stability.

[0040] On the other hand, at least one drill rod body 2 is provided, that is, several drill rod bodies 2 can be provided to adapt to the length of steel pipe piles with different requirements. If several drill rod bodies 2 are provided, an inner tube 5 can be provided in another drill rod body 2, and adjacent drill rod bodies 2 can be connected through a shell tube 4, an outer tube 3 and a locking member 6.

[0041] In some embodiments, reference Figure 1 and Figure 4 As shown, the lower inner tube 5 is also provided with a drive head sleeve 7 and a transition plate 8 at the end away from the drill rod body 2. That is, the drive head sleeve 7 is provided at the lower inner tube 5 at one end of the upper pipe pile 1, and the transition plate 8 is provided with an external hexagonal connector 9 at one end. The external hexagonal connector 9 has two functions: first, it is used to facilitate connection with drive components, such as drive motors and other drive equipment; second, it facilitates drilling into the ground.

[0042] The drive head sleeve 7 is located between the transition plate 8 and the upper pipe pile 1, so that when the transition plate 8 is under stress, the drive head sleeve 7 provides resistance to compression and torsion.

[0043] Furthermore, a gap is provided between the drive head sleeve 7 and the lower inner tube 5, and multiple inner key strips 66 and anti-pull key strips 67 are provided in the gap. The inner key strips 66 provide circumferential fixation between the lower inner tube 5 and the drive head sleeve 7 to transmit torque, while providing a certain elastic buffering effect. The anti-pull key strips 67 can prevent the transition plate 8 and the lower inner tube 5 from being pulled from the upper pipe pile 1, so as to provide tensile strength and improve the connection stability of the overall steel pipe pile structure.

[0044] The drive head sleeve 7 may have an insertion hole that communicates with the gap, and the insertion hole may be equipped with a locking element 6 as required.

[0045] Furthermore, the outer wall of the hexagonal joint 9 is provided with several stiffening plates 91, and the stiffening plates 91 are fixedly connected to the transition plate 8. The stiffening plates 91 are arranged along the circumference of the hexagonal joint 9, and the stiffening plates 91 can provide compressive and torsional resistance, so that the connection between the hexagonal joint 9 and the transition plate 8 can be more stable.

[0046] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A steel pipe pile, characterized in that, The system includes an upper pipe pile (1), a drill rod body (2), an outer sleeve (3), a connecting shell (4), and a lower inner tube (5); the lower inner tube (5) is fitted inside the upper pipe pile (1); one end of the connecting shell (4) is connected to the upper pipe pile (1), and the other end is connected to the lower inner tube (5); the lower inner tube (5) is detachably connected to the drill rod body (2); the outer sleeve (3) is wrapped around the outer wall of the lower inner tube (5) and the connecting shell (4), and the outer sleeve (3) and the lower inner tube (5) have interconnected connecting holes (31) on their circumferential walls, and a movable locking member (6) is provided in the connecting hole (31), which provides locking between the outer sleeve (3) and the lower inner tube (5).

2. A steel pipe pile according to claim 1, characterized in that, The locking member (6) includes a movable torsion shear bolt (61) and a nut (62); the torsion shear bolt (61) passes through the connecting hole (31), and the nut (62) is located outside the outer sleeve (3) and screwed to the torsion shear bolt (61).

3. A steel pipe pile according to claim 2, characterized in that, The locking component (6) further includes a positioning cone pin (63), a positioning washer (64), and a positioning expansion ring (65); the positioning cone pin (63) passes through the connecting hole (31), and the torque shear bolt (61) passes through the positioning cone pin (63) and extends outward to the outer sleeve (3); the positioning washer (64) is fitted onto the torque shear bolt (61) and is larger than the connecting hole (31); the positioning expansion ring (65) is fitted onto the torque shear bolt (61) and engages with the positioning washer (64).

4. A steel pipe pile according to claim 3, characterized in that, The inner wall of the lower inner tube (5) is provided with several inner key strips (66).

5. A steel pipe pile according to claim 1, characterized in that, At least one drill rod body (2) shall be provided.

6. A steel pipe pile according to claim 1, characterized in that, The lower inner tube (5) is further provided with a drive head sleeve (7) and a transition plate (8) at the end away from the drill rod body (2). The transition plate (8) is provided with an external hexagonal connector (9) at one end. The drive head sleeve (7) is located between the transition plate (8) and the upper pipe pile (1).

7. A steel pipe pile according to claim 6, characterized in that, A gap is provided between the drive head sleeve (7) and the lower inner tube (5), and a number of inner key bars (66) and anti-pull key bars (67) are provided in the gap.

8. A steel pipe pile according to claim 7, characterized in that, The outer wall of the external hexagonal joint (9) is provided with several stiffening plates (91), and the stiffening plates (91) are fixedly connected to the transition plate (8).

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