Construction equipment and method for concrete pipe pile

Abstract

The invention relates to the technical field of pipe pile construction devices, in particular to construction equipment and method for a concrete pipe pile, the construction equipment comprises a fixing frame, a driving mechanism is installed outside the fixing frame, a connecting frame is installed outside the driving mechanism, and a control mechanism is installed inside the connecting frame; the interior of the connecting frame is rotatably connected with a supporting cylinder, the interior of the supporting cylinder is slidably connected with a first moving ring, the interior of the first moving ring is slidably connected with a control panel, and the exterior of the control panel is provided with a first fixing shaft. The first fixing shaft and the second fixing shaft are connected through the connecting rod, the first fixing shaft and the second fixing shaft can be fixed through connection of the fixing rod and the connecting rod, the supporting cylinder can drive a new-length spiral piece to conduct construction when rotating, and the function of adjusting the length of the spiral piece according to the depth of a pit hole is achieved; and installation according to different machining requirements is facilitated.

Description

Technical Field

[0001] This application relates to the technical field of pipe pile construction devices, and in particular, to a construction equipment and method for concrete pipe piles. Background Art

[0002] Concrete pipe piles are a type of concrete component, mainly used in the foundation treatment of projects such as buildings, bridges, and ports. Its main structure consists of a pile body, end plates, and steel sleeve hoops. Different sizes of outer diameters and wall thicknesses can be selected according to different pipe pile construction requirements. It can strengthen the support in soft foundations and adapt to complex geological environments, with high strength and durability.

[0003] During the construction process of concrete pipe piles, a pipe pile excavator is used. Through a rotary drilling device, a positioning hole adapted to the pipe pile size can be processed. During construction, a concrete support pipe is also filled inside the hole. The concrete support pipe can enhance the use stability of the pipe pile. According to different hole sizes, holes of different depths need to be drilled. When constructing the holes, workers will use an excavator. The inside of the excavator includes components such as an overall fixed frame, a control motor, and spiral blades. The position of the spiral blades can be controlled through the fixed frame. At this time, the spiral blades controlled by the control motor can rotate for hole construction. However, the length of the spiral blades of this type of equipment is generally fixed, and only holes of a fixed depth can be dug during construction. When holes of different depths need to be dug, spiral blades of different lengths need to be installed outside the control motor, or the spiral blades after construction are taken out and new spiral blades are installed at the bottom of the spiral blade fixed shaft. The downtime during installation is relatively long and the installation is inconvenient.

[0004] Therefore, we propose a construction equipment and method for concrete pipe piles. Summary of the Invention

[0005] In order to facilitate the adjustment of the length of the spiral blades, this application provides a construction equipment and method for concrete pipe piles.

[0006] A construction equipment and method for concrete pipe piles provided by this application adopt the following technical solutions: A construction equipment and method for concrete pipe piles includes a fixed frame, a driving mechanism is installed outside the fixed frame, a connecting frame is installed outside the driving mechanism, and a control mechanism is installed inside the connecting frame; A support cylinder is rotatably connected inside the connecting frame. A first moving ring is slidably connected inside the support cylinder. A control board is slidably connected inside the first moving ring. A first fixed shaft is installed outside the control board. A rotary drilling spiral blade is installed outside the first fixed shaft. A connecting rod is installed at one end of the first fixed shaft. A second fixed shaft is slidably connected to the outer surface of the connecting rod. A connecting spiral blade is installed outside the second fixed shaft. A fixed rod is threadedly connected inside the second fixed shaft; A second moving ring is slidably connected to the outer surface of the support cylinder. A limiting mechanism is installed outside the second moving ring. A support frame is installed outside the second moving ring.

[0007] Optionally, the driving mechanism includes a first motor. The base of the first motor is fixedly installed outside the fixed frame. The output end of the first motor is fixedly installed with a first threaded rod. A moving frame is threadedly connected to the outer surface of the first threaded rod. The outer surface of the moving frame is fixedly installed with the outer surface of the connecting frame. A first limiting rod is fixedly installed inside the fixed frame. The outer surface of the first limiting rod is slidably connected to the inside of the moving frame.

[0008] Optionally, the control mechanism includes a first gear. The outer surface of the support cylinder is fixedly installed inside the first gear. A second gear is meshed with the outside of the first gear. The rotating shaft of the second gear is rotatably connected to the inside of the connecting frame. A second motor is installed outside the connecting frame. The output end of the second motor is fixedly installed with one end of the rotating shaft of the second gear.

[0009] Optionally, limiting grooves are provided inside both the first fixed shaft and the second fixed shaft. There are multiple groups of the limiting grooves and the control board arranged in a circular array. The outer surface of the control board is slidably connected to the inside of the limiting groove. A positioning groove is provided inside the support cylinder. The outer surface of the control board is slidably connected to the inside of the positioning groove.

[0010] Optionally, the cross-section of the connecting rod is a hexagonal structure. The outer surface of the fixed rod is threadedly connected to the inside of the connecting rod. The fixed rods are arranged at intervals up and down inside the second fixed shaft.

[0011] Optionally, the limiting mechanism includes a second threaded rod. The outer surface of the second threaded rod is rotatably connected to the inside of the support cylinder. The outer surface of the second threaded rod is threadedly connected to the inside of the second moving ring. A third motor is installed outside the support cylinder. The output end of the third motor is fixedly installed with one end of the second threaded rod. Multiple groups of second limiting rods are fixedly installed on the outer surface of the support cylinder. The outer surface of the second limiting rods is slidably connected to the inside of the second moving ring.

[0012] Optionally, a third threaded rod is internally threadedly connected to the support frame. The outer surface of the third threaded rod is rotatably connected to the outer surface of the control board. A baffle is fixedly installed on the outer surface of the control board, and the outer surface of the baffle is in contact with the outer surface of the first moving ring.

[0013] A construction method for concrete pipe piles includes the following steps: S1: During use, first fix the first fixed shaft. Place the first fixed shaft inside the support cylinder, and then rotate the third threaded rod to make the control board enter the inside of the limiting groove. The positioning of the first fixed shaft in the middle position of the support cylinder can be achieved by the fixation of the control boards arranged in a circular array at this time. S2: During the construction of the pipe pile pit, control the second gear to rotate through the second motor. The rotation of the support cylinder inside the connecting frame can be controlled through the meshing of the first gear and the second gear. At this time, the downward movement of the support cylinder can be controlled by the action of the first threaded rod, and the rotation of the rotary drilling spiral blade can be controlled by the action of the second motor to perform rotary drilling construction on the pipe pile pit. S3: By rotating the second threaded rod, the first moving ring and the second moving ring can move up and down at the position of the support cylinder, the rotary drilling spiral blade can be controlled to extend outside the support cylinder, and the movement of the rotary drilling spiral blade can be controlled to perform pipe pile pit construction. S4: When adjusting the length of the spiral blade according to the length of the pipeline, first drive the rotary drilling spiral blade to move to a position close to the top of the support cylinder through the second threaded rod, and then install the connecting spiral blade through the second fixed shaft. The second fixed shaft can be positioned outside the first fixed shaft through the connecting rod, and then multiple fixing rods are installed inside the second fixed shaft. At this time, the fixing rods can enter the inside of the connecting rod. The first fixed shaft, the second fixed shaft, and the connecting rod can be fixed through multiple fixing rods. Then drive the whole to move downward through the second threaded rod. Reverse rotation of the third threaded rod can make the control board disengage from the connection inside the first fixed shaft, and then control the first moving ring to move to one end position of the second fixed shaft. Repeat the operation to make the control board enter the limiting groove inside the second fixed shaft. At this time, the rotation of the support cylinder can perform construction on the pipe pile pit at a new depth.

[0014] In summary, the present application includes the following beneficial technical effects: 1. Through the cooperation between the control board, the connecting rod, and the fixing rod, when constructing the pipe pile pit, the control board will enter the inside of the limiting groove. At this time, the rotation of the support cylinder can drive the control board to rotate, which can drive the rotary drilling spiral blade to rotate for construction. When adjusting the length of the spiral blade, control the first fixing shaft to move to a position near the top of the support cylinder, and then connect the first fixing shaft and the second fixing shaft through the connecting rod. The connection between the fixing rod and the connecting rod can fix the first fixing shaft and the second fixing shaft. Then, when the support cylinder rotates, it can drive the spiral blade of the new length to construct, without removing the original spiral blade or moving it outside for adjustment, reducing the downtime during installation, realizing the function of adjusting the length of the spiral blade according to the depth of the pit, and being beneficial for installation according to different processing requirements. 2. By setting components such as the first gear and the second gear, the power of the second motor can be transmitted through the meshing of the first gear and the second gear. At this time, the rotation of the first gear and the second gear can control the rotation of the support cylinder. Through the cooperation of the first gear and the second gear, the rotational power of the support cylinder is changed from direct connection with the original motor to indirect connection, facilitating the exposure of the hollow inside the support cylinder and facilitating the installation and adjustment of the spiral blade. 3. By setting components such as the first moving ring and the second moving ring, under the action of the second threaded rod, the first moving ring and the second moving ring can be controlled to move up and down. When the rotary drilling spiral blade is constructing, the first moving ring and the second moving ring move to the bottom position of the support cylinder. At this time, the rotary drilling spiral blade is exposed outside and can construct the pit. When adjusting the length of the spiral blade, the first moving ring and the second moving ring move to the top position of the support cylinder, and then the control board is disengaged from the limiting groove inside the first fixing shaft. The first fixing shaft and the second fixing shaft are connected through the fixing rod, and then the first moving ring and the second moving ring move to the bottom position of the support cylinder again. At this time, the control board enters the limiting groove inside the second fixing shaft, and so on, the overall length can be adjusted according to the construction requirements, and the original equipment does not need to be disassembled during installation, making the construction more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is the schematic diagram of the overall structure in the embodiment of the present application; Figure 2 is the schematic diagram of the structure of the fixing frame component in the embodiment of the present application; Figure 3 is the schematic diagram of the structure of the control mechanism component in the embodiment of the present application; Figure 4 is the schematic diagram of the structure of the support cylinder component in the embodiment of the present application; Figure 5 is the schematic diagram of the internal structure of the support cylinder in the embodiment of the present application; Figure 6 is in the embodiment of the present application Figure 5 partial enlarged view A in; Figure 7It is a schematic structural diagram of the fixed rod component in the embodiment of the present application.

[0016] Reference numerals: 1, fixed frame; 2, driving mechanism; 201, first motor; 202, first threaded rod; 203, moving frame; 204, first limiting rod; 3, connecting frame; 4, control mechanism; 401, first gear; 402, second gear; 403, second motor; 5, support cylinder; 6, first moving ring; 7, control board; 8, first fixed shaft; 9, rotary drilling spiral blade; 10, connecting rod; 11, second fixed shaft; 12, connecting spiral blade; 13, fixed rod; 14, second moving ring; 15, limiting mechanism; 1501, second threaded rod; 1502, third motor; 1503, second limiting rod; 16, support frame; 17, limiting groove; 18, positioning groove; 19, third threaded rod; 20, baffle. Detailed implementation manners

[0017] The following will Figure 1 - Figure 7 make a further detailed description of the present application.

[0018] The embodiment of the present application discloses a construction device and method for concrete pipe piles.

[0019] A construction device and method for concrete pipe piles includes a fixed frame 1. A driving mechanism 2 is installed outside the fixed frame 1. A connecting frame 3 is installed outside the driving mechanism 2. A controller is installed outside the fixed frame 1. The controller is electrically connected to the electrical equipment inside the overall construction device. Through the controller, the electrical equipment can be controlled to work. Through the driving mechanism 2, the connecting frame 3 can be controlled to move inside the fixed frame 1.

[0020] The driving mechanism 2 includes a first motor 201. The base of the first motor 201 is fixedly installed outside the fixed frame 1. The output end of the first motor 201 is fixedly installed with a first threaded rod 202. The outer surface of the first threaded rod 202 is threadedly connected with a moving frame 203. The outer surface of the moving frame 203 is fixedly installed with the outer surface of the connecting frame 3. The moving frame 203 and the connecting frame 3 are fixed by multiple groups of bolts. By rotating the first motor 201, the first threaded rod 202 can be controlled to rotate. By rotating the first threaded rod 202, the position of the connecting frame 3 can be adjusted. A first limiting rod 204 is fixedly installed inside the fixed frame 1. The outer surface of the first limiting rod 204 is slidably connected with the inside of the moving frame 203. The two sides of the connecting frame 3 can be limited by the limiting rod. Under the limitation of the limiting rod, the connecting frame 3 can move vertically up and down.

[0021] A control mechanism 4 is installed inside the connecting frame 3. A support cylinder 5 is rotatably connected inside the connecting frame 3. The support cylinder 5 is installed inside the connecting frame 3 through multiple support bearings. The inside of the support cylinder 5 is hollow. The support cylinder 5 is made of high-strength alloy. The control mechanism 4 can control the rotation of the support cylinder 5 inside the connecting frame 3.

[0022] The control mechanism 4 includes a first gear 401. The outer surface of the support cylinder 5 is fixedly installed inside the first gear 401. A second gear 402 is meshed outside the first gear 401. The rotating shaft of the second gear 402 is rotatably connected inside the connecting frame 3. A second motor 403 is installed outside the connecting frame 3. The output end of the second motor 403 is fixedly installed at one end of the rotating shaft of the second gear 402. The second motor 403 can control the rotation of the second gear 402 through the first gear 401. Through the meshing of the first gear 401 and the second gear 402, the power of the second motor 403 can be transmitted to the position of the support cylinder 5. Through the meshing of the first gear 401 and the second gear 402, the power of the second motor 403 can be transmitted. At this time, the rotation of the first gear 401 and the second gear 402 can control the rotation of the support cylinder 5. Through the cooperation of the first gear 401 and the second gear 402, the rotational power of the support cylinder 5 is changed from the original direct connection of the motor to an indirect connection, which is convenient for exposing the hollow inside of the support cylinder 5 and is convenient for installing and adjusting the helical blade.

[0023] A first moving ring 6 is slidably connected inside the support cylinder 5. A control board 7 is slidably connected inside the first moving ring 6. A first fixed shaft 8 is installed outside the control board 7. A rotary digging helical blade 9 is installed outside the first fixed shaft 8. Limiting grooves 17 are opened inside both the first fixed shaft 8 and the second fixed shaft 11. Multiple groups of limiting grooves 17 and control boards 7 are arranged in a circular array. The outer surface of the control board 7 is slidably connected inside the limiting groove 17. A positioning groove 18 is opened inside the support cylinder 5. The outer surface of the control board 7 is slidably connected inside the positioning groove 18. Multiple groups of control boards 7 can enter the inside of the limiting groove 17. Under the cooperation of components such as the positioning groove 18, multiple groups of control boards 7 can rotate following the support cylinder 5. Therefore, when the control board 7 enters the inside of the limiting groove 17, the rotation of the control board 7 can drive the rotary digging helical blade 9 to rotate. At this time, the rotary digging helical blade 9 can rotate to carry out rotary digging of the pit.

[0024] One end of the first fixed shaft 8 is installed with a connecting rod 10. The outer surface of the connecting rod 10 is slidably connected with a second fixed shaft 11. A connecting helical blade 12 is installed outside the second fixed shaft 11. The cross-section of the connecting rod 10 is a hexagonal structure. Connecting rods 10 are welded at one ends of both the first fixed shaft 8 and the second fixed shaft 11. Due to the hindrance of the hexagonal shape of the connecting rod 10, the first fixed shaft 8 and the second fixed shaft 11 can rotate synchronously. Therefore, when the second fixed shaft 11 is connected to the first fixed shaft 8 through the connecting rod 10, it can rotate following the support cylinder 5.

[0025] The inner thread of the fixed shaft two 11 is connected with a fixed rod 13. The outer surface of the fixed rod 13 is threadedly connected with the inner part of the connecting rod 10. The fixed rods 13 are arranged at intervals up and down inside the fixed shaft two 11. When the fixed shaft one 8 and the fixed shaft two 11 are connected, a group of connecting rods 10 can be fixed inside the fixed shaft two 11 through multiple groups of fixed rods 13. The connecting rods 10 are fixed by multiple groups of fixed rods 13 at different positions, reducing the shear force received on the connecting rods 10 in the same direction and increasing the stability during overall use. When the fixed shaft one 8 and the fixed shaft two 11 are connected, the length of the overall spiral blade can be extended. Therefore, when using the pipe pile excavator, the length of the spiral blade can be adjusted according to the needs of the pit.

[0026] A moving ring two 14 is slidably connected to the outer surface of the support cylinder 5. A limiting mechanism 15 is installed outside the moving ring two 14. Through the limiting mechanism 15, the up and down movement of the moving ring one 6 and the moving ring two 14 can be controlled, and the position of the control board 7 can be further controlled. The limiting mechanism 15 includes a threaded rod two 1501. The outer surface of the threaded rod two 1501 is rotatably connected to the inside of the support cylinder 5. The outer surface of the threaded rod two 1501 is threadedly connected to the inside of the moving ring two 14. A third motor 1502 is installed outside the support cylinder 5. The output end of the third motor 1502 is fixedly installed with one end of the threaded rod two 1501. Multiple groups of limiting rods two 1503 are fixedly installed on the outer surface of the support cylinder 5. The outer surfaces of the limiting rods two 1503 are slidably connected to the inside of the moving ring two 14. The threaded rod two 1501 can control the movement of the moving ring two 14. When using the rotary drilling spiral blade 9, the end of the fixed shaft one 8 close to the limiting groove 17 can be controlled to move to the lower end position of the support cylinder 5. At this time, the rotation of the support cylinder 5 can control the rotation of the rotary drilling spiral blade 9 for pit construction. When connecting the fixed shaft two 11, the moving ring two 14 is controlled to move to a position close to the top of the support cylinder 5. At this time, the connecting spiral blade 12 can be installed at a position close to the top of the support cylinder 5 without removing the overall spiral blade from the pit, making the installation more convenient.

[0027] An external support frame 16 is installed on the outer side of the moving ring II 14. A threaded rod III 19 is connected inside the support frame 16 in a threaded manner. The outer surface of the threaded rod III 19 is rotationally connected to the outer surface of the control board 7. A baffle 20 is fixedly installed on the outer surface of the control board 7. The outer surface of the baffle 20 is in contact with the outer surface of the moving ring I 6. The connection between the control board 7 and the connecting ring I can be limited by the baffle 20. A control handle is installed at one end of the threaded rod III 19. By rotating the control handle, the control board 7 can be driven to move inside the connecting ring I and the connecting ring II. At this time, the fixing of the fixed shaft I 8 can be released by the control board 7. When the fixed shaft I 8 and the fixed shaft II 11 are connected and fixed, the control board 7 moves to the top position of the fixed shaft II 11 under the control of the moving ring II 14. At this time, the control board 7 can fix the fixed shaft II 11. At this time, the power end of the fixed shaft II 11 and the fixed shaft II 11 is transferred to the position of the fixed shaft II 11.

[0028] The usage method includes the following steps: S1: When in use, first fix the fixed shaft I 8. Place the fixed shaft I 8 inside the support cylinder 5, and then rotate the threaded rod III 19 to make the control board 7 enter the inside of the limit groove 17. The fixed shaft I 8 can be positioned at the middle position of the support cylinder 5 by the fixing of the control board 7 arranged in a circular array at this time. S2: During the construction of the pipe pile tunnel, the second motor 403 is used to control the rotation of the gear II 402. The rotation of the support cylinder 5 inside the connecting frame 3 can be controlled by the meshing of the gear I 401 and the gear II 402. At this time, the support cylinder 5 can be controlled to move downward by relying on the threaded rod I 202. The rotation of the rotary drilling spiral blade 9 can be controlled by relying on the second motor 403 to perform rotary drilling construction on the pipe pile tunnel. S3: By rotating the threaded rod II 1501, the moving ring I 6 and the moving ring II 14 can move up and down at the position of the support cylinder 5, the rotary drilling spiral blade 9 can be controlled to extend out of the support cylinder 5, and the rotary drilling spiral blade 9 can be controlled to move for the construction of the pipe pile tunnel. S4: When adjusting the length of the spiral blade according to the pipe length, first drive the rotary drilling spiral blade 9 to move to a position close to the top of the support cylinder 5 through the second threaded rod 1501. Then install the connecting spiral blade 12 through the second fixed shaft 11. The second fixed shaft 11 can be positioned outside the first fixed shaft 8 through the connecting rod 10. Then install multiple groups of fixed rods 13 inside the second fixed shaft 11. At this time, the fixed rods 13 can enter into the connecting rod 10. Through multiple groups of fixed rods 13, the first fixed shaft 8, the second fixed shaft 11 and the connecting rod 10 can be fixed. Then drive the whole to move downward through the second threaded rod 1501. Reverse rotation of the third threaded rod 19 can make the control board 7 disconnect from the connection inside the first fixed shaft 8. Then control the first moving ring 6 to move to one end position of the second fixed shaft 11. Repeat the operation to make the control board 7 enter the limiting groove 17 inside the second fixed shaft 11. At this time, the rotation of the support cylinder 5 can construct the pipe pile pit at the new depth.

[0029] The implementation principle of the construction equipment and method for a concrete pipe pile in an embodiment of the present application is as follows: When installing the rotary drilling spiral blade 9, place the first fixed shaft 8 inside the support cylinder 5. Then rotate the third threaded rod 19 to make the control board 7 enter the limiting groove 17 inside the first fixed shaft 8. At this time, the support cylinder 5 can rotate under the control of the first gear 401 and the second gear 402. At this time, the support cylinder 5 can drive the rotary drilling spiral blade 9 to rotate through the control board 7 for pit construction. The second threaded rod 1501 can drive the second moving ring 14 to move outside the support cylinder 5, can control one end of the control board 7 and the first fixed shaft 8, and can control the rotary drilling spiral blade 9 to move below the support cylinder 5. When installing the connecting spiral blade 12, move one end of the first fixed shaft 8 to a position close to the top of the support cylinder 5 through the second threaded rod 1501. Then install one end of the second fixed shaft 11 above the first fixed shaft 8 through the connecting rod 10. Fix a group of connecting rods 10 inside the second fixed shaft 11 through multiple groups of fixed rods 13. Then the rotation of the second threaded rod 1501 can control the first fixed shaft 8 and the second fixed shaft 11 after being fixed as a whole to move downward along the support cylinder 5. At this time, the first fixed shaft 8 and the second fixed shaft 11 can rotate synchronously under the action of the support cylinder 5. Then reverse rotate the third threaded rod 19 to make the control board 7 disconnect from the contact with the limiting groove 17 inside the first fixed shaft 8. Finally, make the control board 7 connect with the limiting groove 17 inside the second fixed shaft 11. At this time, the power end of the first fixed shaft 8 and the second fixed shaft 11 changes to one end position of the second fixed shaft 11. By analogy, spiral blades of different lengths can be installed.

[0030] The above are all the preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A construction equipment for concrete pipe piles, comprising a fixing frame (1), characterized in that: A driving mechanism (2) is installed outside the fixing frame (1), a connecting frame (3) is installed outside the driving mechanism (2), and a control mechanism (4) is installed inside the connecting frame (3); A support cylinder (5) is rotatably connected inside the connecting frame (3), a first moving ring (6) is slidably connected inside the support cylinder (5), a control board (7) is slidably connected inside the first moving ring (6), a first fixing shaft (8) is installed outside the control board (7), a rotary digging spiral blade (9) is installed outside the first fixing shaft (8), a connecting rod (10) is installed at one end of the first fixing shaft (8), a second fixing shaft (11) is slidably connected to the outer surface of the connecting rod (10), a connecting spiral blade (12) is installed outside the second fixing shaft (11), and a fixing rod (13) is threadedly connected inside the second fixing shaft (11); A second moving ring (14) is slidably connected to the outer surface of the support cylinder (5), a limiting mechanism (15) is installed outside the second moving ring (14), and a support frame (16) is installed outside the second moving ring (14).

2. The construction equipment for concrete pipe piles according to claim 1, characterized in that: The driving mechanism (2) includes a first motor (201), the base of the first motor (201) is fixedly installed outside the fixing frame (1), a first threaded rod (202) is fixedly installed at the output end of the first motor (201), a moving frame (203) is threadedly connected to the outer surface of the first threaded rod (202), the outer surface of the moving frame (203) is fixedly installed with the outer surface of the connecting frame (3), and a first limiting rod (204) is fixedly installed inside the fixing frame (1), and the outer surface of the first limiting rod (204) is slidably connected to the inside of the moving frame (203).

3. The construction equipment for concrete pipe piles according to claim 1, characterized in that: The control mechanism (4) includes a first gear (401), the outer surface of the support cylinder (5) is fixedly installed inside the first gear (401), a second gear (402) is meshed outside the first gear (401), the rotating shaft of the second gear (402) is rotatably connected to the inside of the connecting frame (3), and a second motor (403) is installed outside the connecting frame (3), and the output end of the second motor (403) is fixedly installed with one end of the rotating shaft of the second gear (402).

4. The construction equipment for concrete pipe piles according to claim 1, characterized in that: Limiting grooves (17) are formed inside both the first fixing shaft (8) and the second fixing shaft (11), and both the limiting grooves (17) and the control board (7) are arranged in multiple groups in a circular array, the outer surface of the control board (7) is slidably connected to the inside of the limiting grooves (17), and a positioning groove (18) is formed inside the support cylinder (5), and the outer surface of the control board (7) is slidably connected to the inside of the positioning groove (18).

5. The construction equipment for concrete pipe piles according to claim 1, characterized in that: The cross section of the connecting rod (10) is a hexagonal structure, the outer surface of the fixing rod (13) is threadedly connected to the inside of the connecting rod (10), and the fixing rods (13) are arranged at intervals up and down inside the second fixing shaft (11).

6. The construction equipment for concrete pipe piles according to claim 1, characterized in that: The limiting mechanism (15) includes a second threaded rod (1501). The outer surface of the second threaded rod (1501) is rotatably connected to the inside of the support cylinder (5). The outer surface of the second threaded rod (1501) is threadedly connected to the inside of the second moving ring (14). A third motor (1502) is installed outside the support cylinder (5). The output end of the third motor (1502) is fixedly installed at one end of the second threaded rod (1501). A plurality of second limiting rods (1503) are fixedly installed on the outer surface of the support cylinder (5). The outer surface of the second limiting rod (1503) is slidably connected to the inside of the second moving ring (14).

7. The construction equipment for concrete pipe piles according to claim 1, characterized in that: A third threaded rod (19) is threadedly connected to the inside of the support frame (16). The outer surface of the third threaded rod (19) is rotatably connected to the outer surface of the control board (7). A baffle (20) is fixedly installed on the outer surface of the control board (7). The outer surface of the baffle (20) is in contact with the outer surface of the first moving ring (6).

8. A construction method for concrete pipe piles, using the construction equipment for concrete pipe piles according to any one of claims 1 - 7, characterized in that: It includes the following steps: S1: During use, first fix the first fixed shaft (8). Place the first fixed shaft (8) inside the support cylinder (5), and then rotate the third threaded rod (19) to make the control board (7) enter the inside of the limiting groove (17). The fixation of the limiting groove (17) by the annularly arranged control boards (7) at this time can position the first fixed shaft (8) in the middle of the support cylinder (5). S2: During the construction of the pipe pile pit, control the rotation of the second gear (402) through the second motor (403). The meshing of the first gear (401) and the second gear (402) can control the rotation of the support cylinder (5) inside the connecting frame (3). At this time, relying on the function of the first threaded rod (202), the support cylinder (5) can be controlled to move downward. Relying on the function of the second motor (403), the rotary drilling spiral blade (9) can be controlled to rotate to carry out rotary drilling construction on the pipe pile pit. S3: By rotating the second threaded rod (1501), the first moving ring (6) and the second moving ring (14) can move up and down at the position of the support cylinder (5), which can control the rotary drilling spiral blade (9) to extend out of the support cylinder (5), and can control the movement of the rotary drilling spiral blade (9) to carry out pipe pile pit construction. S4: When adjusting the length of the spiral blade according to the pipe length, first drive the rotary drilling spiral blade (9) to move to a position close to the top of the support cylinder (5) through the second threaded rod (1501), then install the connecting spiral blade (12) through the second fixed shaft (11). The second fixed shaft (11) can be positioned outside the first fixed shaft (8) through the connecting rod (10). Then install multiple groups of fixed rods (13) inside the second fixed shaft (11). At this time, the fixed rods (13) can enter the inside of the connecting rod (10). Through multiple groups of fixed rods (13), the first fixed shaft (8), the second fixed shaft (11) and the connecting rod (10) can be fixed. Then drive the whole to move downward through the second threaded rod (1501). Reverse rotation of the third threaded rod (19) can make the control board (7) disengage from the connection inside the first fixed shaft (8). Then control the first moving ring (6) to move to one end position of the second fixed shaft (11). Repeat the operation to make the control board (7) enter the limit groove (17) inside the second fixed shaft (11). At this time, the support cylinder (5) rotates to construct the pipe pile tunnel at the new depth.

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