Temporary cross beam for steel trestle

Abstract

The invention belongs to the technical field of steel trestles, and discloses a temporary cross beam for a steel trestle, the temporary cross beam comprises a cross beam and a steel pipe pile assembly, the steel pipe pile assembly comprises a steel pipe pile main body, the top of the steel pipe pile main body is provided with a notch for clamping the cross beam, and the width of the notch is greater than that of the cross beam. The notch with the width larger than that of the cross beam is formed in the top end of the steel pipe pile body, the first transmission rod and the guide block drive the second transmission rod and the push rod to rotate, and the elastic piece and the rubber butt joint pad deform to be filled between the notch and the cross beam; the rubber butt joint pad is attached to the inner wall of the steel pipe pile body, the contact area between the beam and the steel pipe pile body is increased, the rubber butt joint pad can prevent the notch from being too large, the welding difficulty of the beam and the steel pipe pile body is increased, meanwhile, the notch formed in the steel pipe pile body is larger than the beam, butt joint with the steel pipe pile body is facilitated, and therefore the construction difficulty is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of steel trestle bridges, in particular to a temporary crossbeam used for steel trestle bridges. Background Art

[0002] A steel trestle refers to a temporary steel structure bridge used during bridge construction or maintenance. It has high load-bearing capacity and stability. Temporary beams are made of steel, which is lightweight and high-strength, can withstand large loads, and are easy to transport and install. The steel trestle beams include an upper beam: located in the upper structure of the steel trestle, usually connected to the main beam or longitudinal beam, supporting the bridge deck and distributing the load; a lower beam: located in the lower structure of the steel trestle, connected between two steel pipe piles or supporting structures, enhancing the overall stability and load-bearing capacity of the bridge.

[0003] The connection between the steel trestle beam and the steel pipe pile is an important link to ensure the stability and bearing capacity of the steel trestle structure. The connection between the beam and the steel pipe pile is usually achieved by welding, embedded and corbel connection. The existing embedded connection sinks the steel pipe pile into a predetermined position, and makes necessary adjustments and fixes. A notch is welded on the top of the steel pipe pile and the beam is placed in the notch on the top of the steel pipe pile. During this construction process, a notch that matches the beam needs to be opened on the top of the steel pipe pile, but the notch is difficult to match the beam, and the notch may be too large or too small. If the notch is too large, it will increase the difficulty of welding the beam and the steel pipe pile. If it is too small, it will require repeated cutting, which increases the difficulty of construction. At the same time, the welding method affects the subsequent disassembly of the steel trestle. Therefore, a temporary beam for the steel trestle is proposed. Summary of the Invention

[0004] In order to solve the problems raised in the above-mentioned background technology, the present invention provides a temporary crossbeam for a steel trestle, which solves the problem that a groove needs to be opened on the top of the existing steel pipe pile to match the crossbeam, but the groove is difficult to match the crossbeam, and the groove may be too large or too small. If the groove is too large, it will increase the difficulty of welding the crossbeam and the steel pipe pile, and if it is too small, it will require repeated cutting, increasing the difficulty of construction.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a temporary crossbeam for a steel trestle, comprising a crossbeam and a steel pipe pile assembly, further comprising:

[0006] The steel pipe pile assembly includes a steel pipe pile body, the top of the steel pipe pile body is provided with a slot for engaging with a crossbeam, and the width of the slot is greater than the width of the crossbeam;

[0007] a transmission assembly, the transmission assembly being mounted on the crossbeam;

[0008] docking components, the docking components are arranged on both sides of the beam;

[0009] The transmission assembly includes a second fixing plate and a first fixing plate respectively fixed at both ends of the crossbeam, a first transmission rod is movably sleeved between the second fixing plate and the first fixing plate, a second transmission rod is sleeved on the outside of the first transmission rod, and a push rod is symmetrically fixed on the periphery of the second transmission rod;

[0010] The second transmission rod is located between the first fixing plate and the second fixing plate;

[0011] The docking assembly includes a supporting movable plate movably arranged on the side of the crossbeam, the side of the supporting movable plate is fixed with the supporting plate through docking ears and bolts, the side of the supporting plate is fixed with spring plates equidistantly, and one end of the spring plates is connected to a rubber docking pad through a docking block;

[0012] The end of the crossbeam is placed in the slot, and the second transmission rod and the push rod rotate with the first transmission rod as the central axis, pushing the supporting movable plate, the supporting plate, the spring sheet and the rubber docking pad outward. The spring sheet and the rubber docking pad are blocked by the slot and deformed to fill the space between the slot and the crossbeam, and are driven into the space between the rubber docking pad and the crossbeam through the stabilizing pad;

[0013] The stabilizing pad is sawtooth-shaped, and the tooth gaps are sequentially engaged between two adjacent elastic sheets.

[0014] Preferably, a guide block is fixedly mounted on the outside of the first transmission rod, and a guide groove for sliding of the guide block is formed on the inner wall of the second transmission rod;

[0015] The first transmission rod is rotated to drive the second transmission rod and the push rod to rotate through the guide block.

[0016] Preferably, the support plate is docked with the docking ear by means of bolts, and the spring piece, the docking block and the rubber docking pad can be removed and separated from between the notch and the crossbeam by removing the bolts.

[0017] Preferably, the transmission assembly further comprises a circular groove provided inside the second fixing plate, and the end portion of the first transmission rod is fixedly provided with a limiting ring movable in the circular groove.

[0018] Preferably, a limit block is symmetrically fixed on one end of the first transmission rod, a slot adapted to the limit block is symmetrically opened on the side of the second fixing plate, and a limit block for limiting the limit block is fixed on the side of the second fixing plate;

[0019] When the limit block is in a vertical state, it is limited by one of the limit blocks. When the limit block is rotated ninety degrees, it is limited by the other limit block, so that the limit block coincides with the slot, and the first transmission rod is pushed to engage the limit block in the slot.

[0020] Preferably, a first through hole is formed in the middle of the push rod and the second transmission rod, and a rectangular groove of the same specification is formed on the first transmission rod and the guide block;

[0021] Two long sides of the rectangular groove are tangent to the first through hole.

[0022] Preferably, when the first transmission rod, the second transmission rod and the push rod rotate ninety degrees and the first transmission rod is pushed to engage the limiting block inside the slot, the guide block slides in the guide slot and the rectangular slot always remains connected to the first through hole.

[0023] Preferably, a second through hole having the same diameter as the first through hole is formed on the supporting movable plate, the supporting plate and the second through hole;

[0024] The outside of the steel pipe pile body is provided with a docking hole having the same diameter as the second through hole;

[0025] When the push rod rotates from a vertical state to a horizontal state, the first through hole, the second through hole and the docking hole are connected, and the docking rod passes through the docking hole, the second through hole, the first through hole and the rectangular groove.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] The present invention provides a slot larger than the width of the crossbeam at the top of the steel pipe pile body, the end of the crossbeam is placed in the slot, and the second transmission rod and the push rod are driven to rotate by the first transmission rod and the guide block, and the support movable plate, the support plate and the rubber docking pad are pushed to move toward the outer end by the push rod, and the rubber docking pad is supported by the spring sheet, which is blocked by the steel pipe pile body during the movement, so that the spring sheet and the rubber docking pad are deformed and filled between the slot and the crossbeam. Since the steel pipe pile body is tubular and the crossbeam is rectangular, the rubber docking pad fits the inner wall of the steel pipe pile body, increasing the contact area between the crossbeam and the steel pipe pile body. The rubber docking pad can avoid the slot being too large, which increases the difficulty of welding the crossbeam and the steel pipe pile body. At the same time, the slot provided on the steel pipe pile body is larger than the crossbeam, which is convenient for docking with the steel pipe pile body, thereby reducing the difficulty of construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the overall appearance of the present invention;

[0029] Figure 2 This is a schematic diagram of the disassembled structure of the crossbeam and steel pipe pile assembly of the present invention;

[0030] Figure 3 This is a schematic diagram of the appearance structure of the crossbeam, transmission assembly and docking assembly of the present invention;

[0031] Figure 4This is a schematic diagram of the coordination structure between the stabilizing pad and the crossbeam of the present invention;

[0032] Figure 5 This is a schematic diagram of the structure of the docking assembly and the steel pipe pile assembly of the present invention;

[0033] Figure 6 Schematic diagram of the cross-sectional structure of the beam, transmission assembly and docking assembly of the present invention;

[0034] Figure 7 This is a schematic diagram of the motion structure of the transmission assembly and the docking assembly of the present invention;

[0035] Figure 8 This is a schematic diagram of the disassembled structure of the docking assembly of the present invention;

[0036] Figure 9 This is a schematic diagram of the disassembled structure of the transmission assembly and the crossbeam of the present invention;

[0037] Figure 10 This is a schematic diagram of the disassembled structure of the transmission assembly of the present invention;

[0038] Figure 11 It is a schematic diagram of the cross-sectional structure of the transmission component of the present invention.

[0039] In the figure: 1. crossbeam; 2. steel pipe pile assembly; 21. steel pipe pile body; 22. notch; 23. docking rod; 3. transmission assembly; 30. rectangular groove; 31. first fixed plate; 32. first transmission rod; 33. guide block; 34. limit block; 35. limit ring; 36. circular groove; 37. slot; 38. limit block; 39. second fixed plate; 311. guide groove; 312. second transmission rod; 313. push rod; 314. first through hole; 4. docking assembly; 41. support movable plate; 42. docking ear; 43. support plate; 44. spring piece; 45. docking block; 46. rubber docking pad; 47. guide rod; 48. second through hole; 49. stabilizing pad. DETAILED DESCRIPTION

[0040] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0041] like Figures 1 to 11 As shown, the present invention provides a temporary crossbeam for a steel trestle, comprising a crossbeam 1 and a steel pipe pile assembly 2, and further comprising:

[0042] The steel pipe pile assembly 2 includes a steel pipe pile body 21. A notch 22 is provided on the top of the steel pipe pile body 21 for engagement with the crossbeam 1. The width of the notch 22 is greater than the width of the crossbeam 1.

[0043] Transmission assembly 3, which is mounted on the beam 1;

[0044] Docking assembly 4, which is arranged on both sides of the beam 1;

[0045] The transmission assembly 3 includes a second fixing plate 39 and a first fixing plate 31 respectively fixed at both ends of the crossbeam 1. A first transmission rod 32 is movably sleeved between the second fixing plate 39 and the first fixing plate 31. A second transmission rod 312 is sleeved on the outside of the first transmission rod 32. A push rod 313 is symmetrically fixed to the periphery of the second transmission rod 312.

[0046] The second transmission rod 312 is located between the first fixing plate 31 and the second fixing plate 39;

[0047] The docking assembly 4 includes a supporting movable plate 41 movably arranged on the side of the crossbeam 1. The side of the supporting movable plate 41 is fixed with a supporting plate 43 via docking ears 42 and bolts. The side of the supporting plate 43 is fixed with spring plates 44 at equal intervals. One end of the spring plate 44 is connected to a rubber docking pad 46 via a docking block 45.

[0048] The end of the crossbeam 1 is placed in the notch 22. The second transmission rod 312 and the push rod 313 rotate around the first transmission rod 32, pushing the supporting movable plate 41, the supporting plate 43, the spring plate 44, and the rubber pad 46 outward. The spring plate 44 and the rubber pad 46 are blocked by the notch 22 and deform to fill the space between the notch 22 and the crossbeam 1. The stabilizing pad 49 is driven into the space between the rubber pad 46 and the crossbeam 1.

[0049] The stabilizing pad 49 is serrated, and the teeth are sequentially engaged between two adjacent spring pieces 44;

[0050] A guide block 33 is fixedly mounted on the outside of the first transmission rod 32, and a guide groove 311 is formed on the inner wall of the second transmission rod 312 for the guide block 33 to slide.

[0051] Rotate the first transmission rod 32 to drive the second transmission rod 312 and the push rod 313 to rotate through the guide block 33;

[0052] The support plate 43 is connected to the docking ear 42 by bolts. By removing the bolts, the spring piece 44, the docking block 45 and the rubber docking pad 46 can be removed and separated from between the notch 22 and the beam 1.

[0053] The above scheme is adopted: by installing the steel pipe pile body 21 at a predetermined position, and opening a slot larger than the width of the beam 1 at the top of the steel pipe pile body 21, the end of the beam 1 is placed in the slot 22, and the second transmission rod 312 and the push rod 313 are driven to rotate by the first transmission rod 32 and the guide block 33, and the support movable plate 41, the support plate 43 and the rubber docking pad 46 are pushed outward by the push rod 313 (the support movable plate 41 is symmetrically designed to ensure the strength of the beam 1), and the rubber docking pad 46 is supported by the spring piece 44, and the rubber docking pad 46 is blocked by the steel pipe pile body 21 during movement, so that the spring piece 44 and the rubber docking pad 46 are deformed and filled between the slot 22 and the beam 1, and the stabilizing pad 49 is driven between the rubber docking pad 46 and the beam 1, so that the rubber docking pad 46 is completely compressed, thereby increasing the friction with the steel pipe pile body 21;

[0054] Since the steel pipe pile body 21 is tubular and the crossbeam 1 is rectangular, the rubber butt pad 46 fits against the inner wall of the steel pipe pile body 21, increasing the contact area between the crossbeam 1 and the steel pipe pile body 21. The rubber butt pad 46 can prevent the notch 22 from being too large, which increases the difficulty of welding the crossbeam 1 and the steel pipe pile body 21. By driving in a stabilizing pad, the phenomenon of lateral movement and deviation of the crossbeam 1 can be effectively avoided, further improving the stability of the connection between the crossbeam 1 and the steel pipe pile body 21. The notch 22 opened on the steel pipe pile body 21 is larger than the crossbeam 1, which facilitates connection with the steel pipe pile body 21, thereby reducing the difficulty of construction.

[0055] The above-mentioned spring piece 44 can be replaced by other connecting structures without departing from the present invention. For example, a telescopic connecting rod with a self-locking structure, a connecting structure with a snap self-locking structure, etc. can be used as a connecting mechanism between the support plate 43 and the rubber docking pad 46.

[0056] like Figures 8-10 As shown, the transmission assembly 3 further includes a circular groove 36 formed inside the second fixing plate 39 , and a limiting ring 35 movable in the circular groove 36 is fixed to the end of the first transmission rod 32 ;

[0057] A limit block 34 is symmetrically fixed to one end of the first transmission rod 32, and a slot 37 adapted to the limit block 34 is symmetrically opened on the side of the second fixing plate 39. A limit block 38 is fixed to the side of the second fixing plate 39 to limit the limit block 34.

[0058] When the limit block 34 is in a vertical state, it is limited by one of the limit blocks 38. When the limit block 34 rotates 90 degrees, the other limit block 38 limits the limit block 34 so that the limit block 34 coincides with the slot 37. The first transmission rod 32 is pushed to engage the limit block 34 in the slot 37.

[0059] A first through hole 314 is formed in the middle of the push rod 313 and the second transmission rod 312, and a rectangular groove 30 of the same specification is formed on the first transmission rod 32 and the guide block 33;

[0060] The two long sides of the rectangular groove 30 are tangent to the first through hole 314;

[0061] The first transmission rod 32, the second transmission rod 312 and the push rod 313 rotate 90 degrees. When the first transmission rod 32 is pushed to make the limit block 34 engage with the inside of the slot 37, the guide block 33 slides in the guide slot 311, and the rectangular slot 30 always remains connected to the first through hole 314.

[0062] The supporting movable plate 41, the supporting plate 43 and the second through hole 48 are provided with a second through hole 48 having the same diameter as the first through hole 314;

[0063] The outside of the steel pipe pile body 21 is provided with a docking hole having the same diameter as the second through hole 48;

[0064] When the push rod 313 rotates from the vertical state to the horizontal state, the first through hole 314 and the second through hole 48 are connected to the docking hole, and the docking rod 23 passes through the docking hole, the second through hole 48, the first through hole 314 and the rectangular groove 30.

[0065] The above solution is adopted: by placing the crossbeam 1 in the slot 22, and by rotating the first transmission rod 32, the second transmission rod 312 and the push rod 313 to push the docking assembly 4 outward, the rubber docking pad 46 is filled between the slot 22 and the crossbeam 1, and at the same time, when the first transmission rod 32 is rotated 90 degrees, the limit block 34 coincides with the slot 37, pushing the first transmission rod 32 to move laterally, the limit block 34 is engaged with the inside of the slot 37, and the limit ring 35 moves in the circular groove 36, so that the first transmission rod 32, the second transmission rod 312 and the push rod 313 can be limited and fixed by the limit block 34 and the slot 37;

[0066] At the same time, when the first transmission rod 32, the second transmission rod 312 and the push rod 313 rotate ninety degrees, the first through hole 314, the rectangular groove 30, the second through hole 48 and the docking hole remain coaxially connected, and the docking rod 23 passes through the steel pipe pile body 21, the first through hole 314 and the rectangular groove 30 with the help of bolts to achieve fixed docking between the beam 1 and the steel pipe pile body 21.

[0067] The working principle and use process of the present invention:

[0068] The steel pipe pile body 21 is installed at a predetermined position, and a slot larger than the width of the beam 1 is opened at the top of the steel pipe pile body 21. The end of the beam 1 is placed in the slot 22. The first transmission rod 32 and the guide block 33 drive the second transmission rod 312 and the push rod 313 to rotate. The push rod 313 pushes the support movable plate 41, the support plate 43 and the rubber docking pad 46 to move outward. The rubber docking pad 46 is supported by the spring piece 44. During the movement of the rubber docking pad 46, it is blocked by the steel pipe pile body 21. , so that the spring piece 44 and the rubber mating pad 46 are deformed and filled between the notch 22 and the crossbeam 1. Since the steel pipe pile body 21 is tubular and the crossbeam 1 is rectangular, the rubber mating pad 46 fits the inner wall of the steel pipe pile body 21, increasing the contact area between the crossbeam 1 and the steel pipe pile body 21. The rubber mating pad 46 can prevent the notch 22 from being too large, which increases the difficulty of welding the crossbeam 1 and the steel pipe pile body 21. At the same time, the notch 22 of the steel pipe pile body 21 is larger than the crossbeam 1, which facilitates the docking with the steel pipe pile body 21.

[0069] The crossbeam 1 is placed in the slot 22, and the docking assembly 4 is pushed outward by rotating the first transmission rod 32, the second transmission rod 312 and the push rod 313. The rubber docking pad 46 is filled between the slot 22 and the crossbeam 1. At the same time, when the first transmission rod 32 is rotated 90 degrees, the limit block 34 coincides with the slot 37, pushing the first transmission rod 32 to move laterally. The limit block 34 is engaged with the inside of the slot 37, and the limit ring 35 moves in the circular groove 36. The first transmission rod 32, the second transmission rod 312 and the push rod 313 can be limited and fixed by the limit block 34 and the slot 37.

[0070] At the same time, when the first transmission rod 32, the second transmission rod 312 and the push rod 313 rotate ninety degrees, the first through hole 314, the rectangular groove 30, the second through hole 48 and the docking hole remain coaxially connected, and the docking rod 23 passes through the steel pipe pile body 21, the first through hole 314 and the rectangular groove 30 with the help of bolts to achieve fixed docking between the beam 1 and the steel pipe pile body 21.

[0071] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0072] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A temporary crossbeam for a steel trestle, comprising a crossbeam (1) and a steel pipe pile assembly (2), characterized in that: Also includes: The steel pipe pile assembly (2) comprises a steel pipe pile body (21), the top of the steel pipe pile body (21) is provided with a notch (22) for engaging with the crossbeam (1), and the width of the notch (22) is greater than the width of the crossbeam (1); A transmission assembly (3), the transmission assembly (3) being mounted on the crossbeam (1); A docking assembly (4), the docking assembly (4) being arranged on both sides of the crossbeam (1); The transmission assembly (3) comprises a second fixing plate (39) and a first fixing plate (31) respectively fixed to both ends of the crossbeam (1); a first transmission rod (32) is movably sleeved between the second fixing plate (39) and the first fixing plate (31); a second transmission rod (312) is sleeved on the outside of the first transmission rod (32); and a push rod (313) is symmetrically fixed on the periphery of the second transmission rod (312); The second transmission rod (312) is located between the first fixing plate (31) and the second fixing plate (39); The docking assembly (4) includes a supporting movable plate (41) movably arranged on the side of the crossbeam (1), the side of the supporting movable plate (41) is fixed with a supporting plate (43) through a docking ear (42) and a bolt, the side of the supporting plate (43) is fixed with a spring piece (44) at an equal distance, and one end of the spring piece (44) is connected to a rubber docking pad (46) through a docking block (45); The end of the crossbeam (1) is placed in the notch (22), and the second transmission rod (312) and the push rod (313) rotate with the first transmission rod (32) as the central axis, pushing the supporting movable plate (41), the supporting plate (43), the spring sheet (44) and the rubber docking pad (46) outward, and the spring sheet (44) and the rubber docking pad (46) are blocked by the notch (22) and deformed to fill between the notch (22) and the crossbeam (1), and are driven into between the rubber docking pad (46) and the crossbeam (1) through the stabilizing pad (49); The stabilizing pad (49) is sawtooth-shaped, and the tooth gaps are sequentially engaged between two adjacent spring pieces (44).

2. The temporary crossbeam for a steel trestle according to claim 1, characterized in that: A guide block (33) is fixedly mounted on the outside of the first transmission rod (32), and a guide groove (311) for the guide block (33) to slide is formed on the inner wall of the second transmission rod (312); The first transmission rod (32) is rotated to drive the second transmission rod (312) and the push rod (313) to rotate via the guide block (33).

3. The temporary crossbeam for a steel trestle according to claim 1, characterized in that: The support plate (43) is docked with the docking ear (42) via bolts, and the spring piece (44), docking block (45) and rubber docking pad (46) can be removed and separated between the notch (22) and the crossbeam (1) by removing the bolts.

4. The temporary crossbeam for a steel trestle according to claim 2, characterized in that: The transmission assembly (3) further comprises a circular groove (36) formed on the inner side of the second fixing plate (39), and a limiting ring (35) movable in the circular groove (36) is fixedly mounted on the end of the first transmission rod (32).

5. The temporary crossbeam for a steel trestle according to claim 4, characterized in that: A pair of limiting blocks (34) are symmetrically fixed on one end of the first transmission rod (32); a slot (37) adapted to the limiting blocks (34) is symmetrically opened on the side of the second fixing plate (39); and a limiting block (38) for limiting the limiting blocks (34) is fixed on the side of the second fixing plate (39); When the limit block (34) is in a vertical state, it is limited by one of the limit blocks (38); when the limit block (34) rotates ninety degrees, the limit block (34) is limited by the other limit block (38), and the limit block (34) is made to overlap with the slot (37), and the first transmission rod (32) is pushed to make the limit block (34) engage in the slot (37).

6. The temporary crossbeam for a steel trestle according to claim 5, characterized in that: A first through hole (314) is provided in the middle of the push rod (313) and the second transmission rod (312), and a rectangular groove (30) of the same specification is provided on the first transmission rod (32) and the guide block (33); The two long sides of the rectangular groove (30) are tangent to the first through hole (314).

7. The temporary crossbeam for a steel trestle according to claim 6, characterized in that: When the first transmission rod (32), the second transmission rod (312) and the pushing rod (313) rotate ninety degrees and the first transmission rod (32) is pushed to make the limiting block (34) engage in the inside of the card slot (37), the guide block (33) slides in the guide slot (311), and the rectangular slot (30) always remains in communication with the first through hole (314).

8. The temporary crossbeam for a steel trestle according to claim 7, characterized in that: The supporting movable plate (41), the supporting plate (43) and the second through hole (48) are provided with a second through hole (48) having a diameter consistent with that of the first through hole (314); A docking hole having the same diameter as the second through hole (48) is provided on the outside of the steel pipe pile body (21); When the pushing rod (313) is rotated from a vertical state to a horizontal state, the first through hole (314), the second through hole (48) and the docking hole are connected, and the docking rod (23) passes through the docking hole, the second through hole (48), the first through hole (314) and the rectangular groove (30).

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