A prestressed concrete pipe pile construction positioning device

Abstract

The present application relates to the technical field of positioning devices for construction, and discloses a prestressed concrete pipe pile construction positioning device, comprising a fixed frame, the bottom of which is fixedly connected to a plurality of soil nails, the top of which is slidably engaged with a plurality of lifting plates, the top of which is provided with a plurality of guide plates, the inner side of which is provided with an adjustment mechanism, the inner side of which is provided with a support mechanism for supporting a welding gun, the support mechanism comprising a lifting ring. The present invention drives the guide roller to rise before the pile is connected through the adjustment mechanism in conjunction with the guide plate transmission, thereby cooperating with the No. 1 electric push rod to position and center the pile body of the connected pile, and subsequently following the connected pile body to move synchronously and connect with the pile body at the bottom, thereby adjusting the height of the lifting ring according to the height of the top surface of the bottom pile body, facilitating the subsequent support block of the corresponding height to assist in the pile connection operation, thereby improving the overall pile delivery efficiency and pile pressing quality.

Description

Technical Field

[0001] The present application relates to the technical field of positioning devices for construction, and in particular to a positioning device for prestressed concrete pipe pile construction. Background Art

[0002] With the development of urbanization, higher-rise building forms have been widely used. As the floors increase, the load on the superstructure will continue to increase. The design of shallow foundations cannot meet the design requirements of the load. Therefore, the use of prestressed high-strength concrete pipe pile technology in the construction process has become an inevitable trend. When the pile driver is driving the prestressed high-strength concrete pipe piles, the construction personnel use the total station to measure the horizontal and vertical azimuths of the control point on the design baseline and the pile connection line, and then use the crane arm to lift the pile body and correct the verticality of the pile axis and the position corresponding to the control point before driving the pile. After driving a single pile body, the position of the next pile body is corrected in the same way and the docking device is used to dock the pile body with the remaining part of the upper pile body. Then, the welding seam is manually welded with a welding gun, and the positioning, docking and delivery of each pile body are completed in sequence.

[0003] However, the traditional positioning construction of prestressed concrete pipe piles requires the cooperation of multiple construction workers, and the pile displacement and deflection need to be detected multiple times during the pile driving process, which reduces the positioning efficiency and consumes human resources. The positioning is carried out during the pile construction process by a centering mechanism, such as setting up a mounting frame, which is fixed to the soil by soil nails, and a plurality of telescopic push rods are set on the fixing frame to cooperate with the pile to center the pile. However, when the centering mechanism is used, after the previous pile is driven, part of the pile needs to be left higher than the soil to facilitate subsequent pile connection, and this part of the pile is located inside the centering mechanism. It is difficult for the pile delivery mechanism to continue to deliver the pile to this part of the pile without interfering with the centering mechanism, resulting in the need for manual assistance in positioning or the use of additional docking devices when the next pile is lifted and docked, resulting in reduced positioning efficiency. Summary of the Invention

[0004] This application proposes a prestressed concrete pipe pile construction positioning device, which has the advantages of ensuring that the pile body is always positioned and centered during the pile delivery process and is height-adjustable, and is used to solve the problem of reduced construction efficiency caused by manual assisted pile positioning.

[0005] To achieve the above-mentioned purpose, the present application adopts the following technical solution: a prestressed concrete pipe pile construction positioning device, comprising a fixed frame, a plurality of soil nails fixedly connected to the bottom of the fixed frame, a plurality of lifting plates slidingly clamped on the top of the fixed frame, a plurality of guide plates provided on the top of the fixed frame, an adjustment mechanism provided on the inner side of the fixed frame, a support mechanism for supporting a welding gun provided on the inner side of the fixed frame, and the support mechanism including a lifting ring.

[0006] The adjusting mechanism can drive the guide plate to perform centering positioning, and the adjusting mechanism can drive the lifting plate to rise before connecting the pile, and perform centering positioning on the pile body, and then drive the lifting plate to descend a rated distance synchronously with the pile body at the top according to the height of the top surface of the pile body at the bottom, so that the lifting plate drives the lifting ring to move synchronously.

[0007] Furthermore, the adjusting mechanism includes a No. 1 electric push rod, the lifting plate is fixedly connected to the No. 1 electric push rod, a No. 2 electric push rod is fixedly provided on both sides of the bottom of the fixing frame, a plurality of connecting rods are provided at the bottom of the fixing frame, the connecting rods are fixedly connected to the corresponding lifting plates, two connecting plates are provided at the bottom of the fixing frame, the connecting plates are fixedly connected to the corresponding connecting rods, a No. 1 spring is fixedly connected to the top of the connecting plate near the midpoint, one end of the No. 1 spring is fixedly connected to the fixing frame, and the output end of the No. 2 electric push rod is fixedly connected to a top block.

[0008] Furthermore, the adjustment mechanism also includes a connecting seat, which is fixedly connected to the fixing frame, and a support plate is slidably connected to one side of the connecting seat, and a No. 3 electric push rod is fixedly connected to one side of the top of the connecting seat, and the output end of the No. 3 electric push rod is fixedly connected to the support plate, and the height of the support plate is lower than the height of the guide plate when it is at the top dead point.

[0009] Furthermore, the support mechanism also includes a sliding block, the lifting ring is fixedly connected to the lifting plate, the top surface of the lifting ring is provided with an annular sliding groove, the sliding groove is slidably connected to the sliding block, the top of the sliding block is hinged with a support block, and the top of the support block is set to an arc surface.

[0010] Furthermore, one side of the guide plate is rotatably connected to several guide rollers, the inner side of the guide roller is transmission-connected to a connecting shaft, the guide plate is rotatably connected to the connecting shaft, and a limiting mechanism is provided on the guide plate, and the limiting mechanism is used to limit the rotation of the connecting shaft and thereby limit the rotation of the guide roller relative to the guide plate.

[0011] The beneficial effects of the present invention are as follows:

[0012] 1. The present application provides a prestressed concrete pipe pile construction positioning device, in which the No. 2 electric push rod is extended before the pile is connected, and the transmission drives the guide roller to disengage from the contact with the pile body of the completed pile, thereby leaving the pile body of the inner connecting pile free for guiding. In this way, during the entire pile delivery construction process, each pile body is centered and positioned to ensure that the position and angle of the pile body are within the rated range, thereby improving the construction efficiency of the prestressed concrete pipe pile.

[0013] 2. The present application provides a prestressed concrete pipe pile construction positioning device, which uses a No. 3 electric push rod to provide temporary support during the positioning process of the pile body, so that the guide roller can center the pile body while restricting its rotation. In the subsequent process of the pile body continuing to be lowered, the pile body drives the guide roller to move synchronously, and then the transmission drives the lifting ring to move synchronously, so as to drive the support block to move to the corresponding height according to the height reserved for the pile body of the delivered pile, so as to facilitate the subsequent support of the welding gun and perform auxiliary welding while keeping the position of the welding gun and the annular joint unchanged, thereby improving the efficiency and quality of pile connection and further improving the overall pile delivery efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only embodiments of the present invention. Those skilled in the art can also derive other drawings based on the provided drawings without inventive work.

[0015] Figure 1 This is a schematic diagram of the overall structure of this application;

[0016] Figure 2 This is a structural diagram of the No. 2 electric push rod of this application;

[0017] Figure 3 This is a schematic cross-sectional view of the structure of the sliding block of this application;

[0018] Figure 4 This is a structural diagram of the guide roller of this application;

[0019] Figure 5 This is a structural diagram of the second fixing plate of this application;

[0020] Figure 6 This is a schematic diagram of the transmission part of this application;

[0021] Figure 7 This is a schematic cross-sectional diagram of the ratchet gear structure of this application;

[0022] Figure 8 This is a schematic cross-sectional diagram of the fixed tube structure of this application;

[0023] Figure 9 This is a schematic diagram of the structure of the top block of this application;

[0024] Figure 10 This is a structural diagram of the support plate of this application.

[0025] In the figure: 1-fixed frame, 2-lifting plate, 3-No. 1 electric push rod, 4-guide plate, 5-guide roller, 6-connecting rod, 7-connecting plate, 8-No. 2 electric push rod, 9-No. 1 spring, 10-lifting ring, 11-sliding block, 12-support block, 13-sliding groove, 14-connecting shaft, 15-transmission gear, 16-connecting gear, 17-No. 1 fixed plate, 18-fixed cylinder, 19-sliding rod, 20-No. 2 spring, 21-limiting groove, 22 -Limit block, 23-Positioning key, 24-Permanent magnet, 25-Electromagnet, 26-Connecting seat, 27-No. 3 electric push rod, 28-Support plate, 29-Adjusting ring, 30-Sliding plate, 31-Reset spring, 32-Adjusting rod, 33-No. 2 fixed plate, 34-Adjusting gear, 35-Transmission shaft, 36-Connecting plate, 37-Ratchet gear, 38-No. 4 electric push rod, 39-Clamping plate, 40-Stop claw, 41-No. 3 spring, 42-Top block. DETAILED DESCRIPTION

[0026] 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.

[0027] Example 1, as Figures 1-4 and Figure 9 , a prestressed concrete pipe pile construction positioning device includes a fixing frame 1, the bottom of the fixing frame 1 is fixedly connected to a plurality of soil nails, and the fixing frame 1 is fixed to the ground by inserting the soil nails into the soil. When in use, the fixing frame 1 needs to be adjusted to a horizontal level, and the top of the fixing frame 1 is slidably connected to a lifting plate 2, and the lifting plate 2 can slide vertically up and down relative to the fixing frame 1 without separating from the fixing frame 1. The number of lifting plates 2 is set to be several and the lifting plates 2 are arranged in a ring on the inner side of the fixing frame 1. One side of the top of the lifting plate 2 is fixedly connected to a No. 1 electric push rod 3, which is horizontally arranged. The output end of the No. 1 electric push rod 3 is fixedly connected to a guide plate 4, and the top of the guide plate 4 is set to an inclined surface for guiding the pile body of the lowered prestressed concrete pile.

[0028] The No. 1 electric push rod 3 corresponding to each of the multiple lifting plates 2 extends the rated length, driving the guide plate 4 to move radially closer in the horizontal direction, which is used to position and center the pile body. Figure 2, a No. 2 electric push rod 8 is fixedly provided at the bottom of the fixing frame 1. The number of the No. 2 electric push rods 8 is set to two and the two No. 2 electric push rods 8 are arranged on both sides of the fixing frame 1. The bottom of the fixing frame 1 is provided with a connecting rod 6 whose number is adapted to the number of the lifting plates 2. The end of the connecting rod 6 is fixedly connected to the corresponding lifting plates 2. Two connecting plates 7 are movably provided on both sides of the bottom of the fixing frame 1. The two connecting plates 7 are arranged on both sides of the fixing frame 1. The connecting plates 7 are fixedly connected to the corresponding connecting rods 6. The top of the connecting plate 7 is fixedly connected to the midpoint of the No. 1 spring 9. One end of the No. 1 spring 9 is fixedly connected to the fixing frame 1. See Figure 9 The output end of the second electric push rod 8 is fixedly connected with a top block 42.

[0029] The second electric push rod 8 is used to drive the connecting plate 7 to rise, and the first spring 9 is used to push the connecting plate 7 down. When in use, the boom of the pile driver is used to lower the pile body from the top of the fixed frame 1 to the inner side of the guide plate 4. At this time, the pile body is in an inclined state, and multiple No. 1 electric push rods 3 are extended, and the No. 1 electric push rod 3 drives the corresponding guide plate 4 to approach the pile body until the guide plate 4 is against the side wall of the pile body. Several guide plates 4 align the position of the pile body and drive the pile body to stand vertically. In the subsequent pile delivery process, the pile driver presses down the pile body part located on the top of the guide plate 4 until the pile body is in place. The reserved part of the pile body is higher than the ground and the height of the top surface of the pile body is not lower than the guide plate 4. The guide plate 4 always guides the pile body during the pile delivery process to avoid the pile body from being offset and deflected during the pile delivery process. There is no need for manual multiple measurement and positioning, which improves the efficiency of pile delivery.

[0030] When connecting piles, the No. 1 electric push rod 3 contracts and resets, and the No. 2 electric push rod 8 extends to drive the top block 42 to move and rise. The top block 42 presses against the bottom surface of the connecting plate 7 to push the connecting plate 7 up. The movement of the connecting plate 7 drives the connecting rod 6 to move, and the connecting rod 6 drives the lifting plate 2 to move and rise. The movement of the lifting plate 2 drives the No. 1 electric push rod 3 to move and rise, and then drives the guide plate 4 to move and rise, so that the guide plate 4 is separated from the corresponding position of the pile body that has completed the pile delivery, leaving the space inside the guide plate 4. When the pile body to be connected is lowered, the No. 1 electric push rod 3 is extended again to position and center the pile body, so that the positions of the upper and lower pile bodies correspond. The subsequent manual welding of the joints does not require additional docking devices, which improves the efficiency of pile connection and thus improves the overall pile delivery efficiency.

[0031] Example 2, as Figures 1-4 、 Figure 9 and Figure 10 On the basis of the first embodiment, one side of the top of the fixing frame 1 is fixedly connected with a connecting seat 26, one side of the connecting seat 26 is slidably connected with a support plate 28, and one side of the top of the connecting seat 26 is fixedly connected with a third electric push rod 27, see Figure 10The output end of the No. 3 electric push rod 27 is fixedly connected to the support plate 28. The height of the support plate 28 is lower than the height of the guide plate 4 when it is at the top dead center. That is, after the No. 2 electric push rod 8 is extended to its full height, the height of the support plate 28 is lower than the height of the guide plate 4. The top of the fixed frame 1 is movably provided with a lifting ring 10, which is fixedly connected to the lifting plate 2. Figure 3 The top surface of the lifting ring 10 is provided with an annular sliding groove 13, and the sliding block 11 is slidably connected to the inner side of the sliding groove 13, so that the sliding block 11 can slide along the sliding groove 13 without leaving the sliding groove 13, that is, rotate around the central axis of the guide plate 4. The top of the sliding block 11 is hinged with a support block 12, and the support block 12 can rotate and swing relative to the sliding block 11 within a rated range, and the top of the support block 12 is set to an arc surface.

[0032] When the pile body is connected, the height of the pile body left above the soil plane fluctuates within the rated range. The No. 2 electric push rod 8 is extended, and the transmission drives the guide plate 4 to rise and disengage from the position corresponding to the bottom pile body, and the height of the guide plate 4 is higher than the height of the support plate 28. The No. 3 electric push rod 27 is extended, driving the horizontal position of one side of the guide plate 4 to be located on the inner side of the guide plate 4. During the lowering process of the pile body connected to the pile, the bottom contacts the support plate 28, and the support plate 28 limits the pile body from further descending. The No. 1 electric push rod 3 drives the guide plate 4 to press against the pile body, and the No. 2 electric push rod 8 is retracted and reset again. The No. 3 electric push rod 27 is retracted and reset, and the support plate 28 is separated from the contact with the pile body. The pile body of the docking pile is lowered again by the boom of the pile driver until the upper and lower pile bodies contact, completing the lowering of the pile body connected to the pile, so that the pile body moves down and the guide plate 4 is driven to move by the friction force combined with the elastic force of the No. 1 spring 9, and the guide plate 4 moves and drives the lifting plate 2 to descend.

[0033] The lifting plate 2 drives the lifting ring 10 to descend, and the lifting ring 10 drives the sliding block 11 to descend and then drives the supporting block 12 to descend, so that the height of the supporting block 12 decreases as the height of the pile body decreases. In the subsequent welding process of the joint, the curved surface of the supporting block 12 is used to support the welding gun. The welding gun is manually held and the gun body is placed on the top of the supporting block 12, and the area of ​​the joint is automatically aligned. The welding gun placement posture is fine-tuned by swinging the supporting block 12. As the welding proceeds, the sliding block 11 is driven to slide along the sliding groove 13, so that the welding gun moves along the sliding groove 13, so that the welding gun is at the rated height and rotates around the pile body joint, and the position of the gun head from the pile body joint remains unchanged, so that when the height of the two pile body joints changes, the pile body is guided, and no additional docking structure is required to dock the pile body. The welding gun is supported by the supporting block 12 to ensure welding quality and improve welding efficiency, thereby improving the construction efficiency of the entire pile delivery process.

[0034] Example 3, as Figure 1-Figure 2 、 Figure 4-Figure 6 and Figure 8 On the basis of embodiment 2, one side of the guide plate 4 is rotatably connected to several guide rollers 5. The guide rollers 5 are used to press against the pile body to position and center the pile body, thereby reducing the wear between the pile body and the guide plate 4 and improving the reliability of the positioning. Specifically, the inner side of the guide roller 5 is transmission-connected with a connecting shaft 14. The guide plate 4 is rotatably connected to the connecting shaft 14. The connecting shaft 14 can only rotate circumferentially relative to the guide plate 4. One end of the connecting shaft 14 is fixedly connected to a transmission gear 15. One side of the guide plate 4 is rotatably connected to several connecting gears 16. The transmission gear 15 and the connecting gear 16 are arranged in sequence. The connecting gear 16 is used to drive the adjacent transmission gear 15 to rotate. The connecting gear 16 and the corresponding transmission gear 15 are meshed with each other. One side of the guide plate 4 is fixedly connected to a No. 1 fixed plate 17.

[0035] One side of the No. 1 fixing plate 17 is fixedly connected to a fixing cylinder 18, see Figure 8 The inner side of the fixed cylinder 18 is slidably sleeved with a sliding rod 19, and the sliding rod 19 is T-shaped. The sliding rod 19 can slide axially relative to the fixed cylinder 18 without disengaging the fixed cylinder 18. One end of the sliding rod 19 is fixedly connected to a circular limit block 22, and the outer wall of the limit block 22 is fixedly connected to a number of positioning keys 23. A limit groove 21 is provided on one side of the connecting gear 16 of the several connecting gears 16, and the shape of the limit groove 21 is adapted to the shape of the limit block 22 and the inner wall is provided with a number of grooves adapted to the positioning keys 23. A No. 2 spring 20 is movably provided on the inner side of the fixed cylinder 18, and the No. 2 spring 20 is used to drive the sliding rod 19 to retract into the fixed cylinder 18. The other end of the sliding rod 19 is fixedly provided with a permanent magnet 24, and an electromagnet 25 is fixedly provided on one side of the fixed cylinder 18. The acting force between the electromagnet 25 and the fixed cylinder 18 is a repulsive force, and the magnitude of the repulsive force is greater than the elastic force of the No. 2 spring 20.

[0036] During the process of pressing the pile body, the No. 2 spring 20 pushes the sliding rod 19 to retract, the limit block 22 and the limit groove 21 remain disengaged, and the connecting gear 16 can rotate relative to the fixed cylinder 18, so that the guide roller 5 is in contact with the pile body and guides the pile body by rolling, reducing the wear of the pile body and the guide roller 5. During the pile connection process, the No. 1 electric push rod 3 remains in the extended state and the No. 2 electric push rod 8 is extended. The No. 1 electric push rod 3 is retracted again to facilitate the subsequent centering of the pile body. After the subsequent support plate 28 supports the pile body, the electric push rod 3 is retracted. The magnet 25 is activated to drive the limit block 22 close to the limit slot 21, and the No. 2 electric push rod 8 is extended again, so that the limit block 22 is embedded in the limit slot 21 to limit the rotation of the guide roller 5. The No. 2 electric push rod 8 determines whether the rolling limit of the guide roller 5 is in place based on the servo feedback of the friction between the guide roller 5 and the pile body, so that the pile body continues to be lowered and the transmission drives the guide plate 4 to go down, thereby reducing the wear of the pile body and the guide roller 5 while ensuring that the lifting ring 10 and the pile body are lowered synchronously, which is convenient for subsequent welding and further improves the reliability of the positioning device.

[0037] Example 4, as Figure 1-Figure 7 On the basis of the third embodiment, one side of the guide plate 4 is fixedly connected to the second fixing plate 33, and one side of the second fixing plate 33 is rotatably connected to the adjusting gear 34. The adjusting gear 34 and the corresponding connecting gear 16 are engaged with each other. One side of the guide plate 4 is rotatably connected to the transmission shaft 35, and one end of the transmission shaft 35 is fixedly connected to the ratchet gear 37. Figure 7 One side of the adjusting gear 34 is rotatably connected to a stop pawl 40, and one side of the stop pawl 40 is fixedly connected to a No. 3 spring 41. One end of the No. 3 spring 41 is fixedly connected to the adjusting gear 34. The stop pawl 40 cooperates with the No. 3 spring 41 to enable the adjusting gear 34 to drive the ratchet gear 37 to rotate in one direction.

[0038] The adjusting gear 34 drives the ratchet gear 37 in one direction to rotate in a direction that is adapted to the direction in which the guide plate 4 drives the guide roller 5 to rotate when the pile body rises relative to the pile body. The other end of the transmission shaft 35 is fixedly connected to a connecting disk 36, and one end of the connecting disk 36 is fixedly connected to an adjusting ring 29. One side annular surface of the adjusting ring 29 is an inclined slope. The connecting shaft 14 is transmission-connected to the guide roller 5 through a flat key, and one side of the guide plate 4 is slidingly connected to a sliding plate 30. The sliding plate 30 is rotatably engaged with the guide roller 5, and the sliding plate 30 can drive the guide roller 5 to move axially when the guide roller 5 rotates. One end of the sliding plate 30 is fixedly connected to an adjusting rod 32, and the adjusting rod 32 corresponds to the position of the adjusting ring 29. One side of the sliding plate 30 is fixedly connected to a reset spring 31, and one end of the reset spring 31 is fixedly connected to the guide plate 4.

[0039] When the No. 2 electric push rod 8 drives the guide plate 4 to rise, the guide plate 4 rises relative to the pile body, and the guide roller 5 rotates under the action of friction. The guide roller 5 rotates to cooperate with the transmission gear 15 and the connecting gear 16 to drive the adjusting gear 34 to rotate. The adjusting gear 34 cooperates with the stop claw 40 and the No. 3 spring 41 to drive the ratchet gear 37 to rotate in one direction. The ratchet gear 37 drives the transmission shaft 35 to rotate. The transmission shaft 35 drives the connecting disk 36 to rotate. The connecting disk 36 drives the adjusting ring 29 to rotate, thereby changing the corresponding inclined surface area of ​​the adjusting ring 29 and the adjusting rod 32.

[0040] Under the pull of the reset spring 31, the reset spring 31 drives the sliding plate 30 to move, and the sliding plate 30 drives the adjusting rod 32 to resist the inclined surface of the adjusting ring 29. The adjusting ring 29 rotates relative to the adjusting rod 32 to change the abutting part, thereby making the sliding plate 30 approach or move away from the inner wall of one side of the guide plate 4 until the No. 2 electric push rod 8 is completely extended. The sliding plate 30 drives the guide roller 5 to move axially. Each time the No. 2 electric push rod 8 is extended, the guide roller 5 performs an axial movement to form a reciprocating swing. When the guide roller 5 is out of contact with the pile body, the annular contact surface between the guide roller 5 and the pile body is changed, thereby further improving the service life of the guide roller 5 and further improving the reliability of the positioning device.

[0041] Both sides of the bottom of the fixed frame 1 are fixedly connected with a No. 4 electric push rod 38, the output end of the No. 4 electric push rod 38 is fixedly connected with a clamping plate 39, and one side of the clamping plate 39 is rotatably connected to a number of connecting rollers. The No. 4 electric push rod 38 is used to cooperate with the clamping plate 39 to clamp and position the delivered pile body after the pile body is lowered, so as to further ensure the accuracy of the pile body docking.

[0042] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A prestressed concrete pipe pile construction positioning device, comprising a fixing frame (1), wherein a plurality of soil nails are fixedly connected to the bottom of the fixing frame (1), characterized in that: The top of the fixing frame (1) is slidably connected to a plurality of lifting plates (2), the top of the fixing frame (1) is provided with a plurality of guide plates (4), the inner side of the fixing frame (1) is provided with an adjustment mechanism, the inner side of the fixing frame (1) is provided with a support mechanism for supporting a welding gun, and the support mechanism includes a lifting ring (10); The adjusting mechanism can drive the guide plate (4) to perform centering positioning, and the adjusting mechanism can drive the lifting plate (2) to rise before connecting the pile, and perform centering positioning on the pile body, and then drive the lifting plate (2) to descend a rated distance synchronously with the pile body at the top according to the height of the top surface of the pile body at the bottom, so that the lifting plate (2) drives the lifting ring (10) to move synchronously; The regulating mechanism comprises a No. 1 electric push rod (3), the lifting plate (2) is fixedly connected to the No. 1 electric push rod (3), a No. 2 electric push rod (8) is fixedly provided on both sides of the bottom of the fixing frame (1), a plurality of connecting rods (6) are provided at the bottom of the fixing frame (1), the connecting rods (6) are fixedly connected to the corresponding lifting plates (2), two connecting plates (7) are provided at the bottom of the fixing frame (1), the connecting plates (7) are fixedly connected to the corresponding connecting rods (6), a No. 1 spring (9) is fixedly connected to the top of the connecting plate (7) at the midpoint, one end of the No. 1 spring (9) is fixedly connected to the fixing frame (1), and the output end of the No. 2 electric push rod (8) is fixedly connected to a top block (42); One side of the guide plate (4) is rotatably connected to a plurality of guide rollers (5), the inner side of the guide roller (5) is transmission-connected to a connecting shaft (14), the guide plate (4) is rotatably connected to the connecting shaft (14), and a limiting mechanism is provided on the guide plate (4), the limiting mechanism is used to limit the rotation of the connecting shaft (14) and thereby limit the rotation of the guide roller (5) relative to the guide plate (4); The limiting mechanism includes a plurality of transmission gears (15), the connecting shaft (14) is fixedly connected to the corresponding transmission gears (15), and one side of the guide plate (4) is rotatably connected to a plurality of connecting gears (16), and the connecting gears (16) and the corresponding transmission gears (15) are meshed with each other; The limiting mechanism also includes a fixed cylinder (18), the inner side of the fixed cylinder (18) is slidably sleeved with a sliding rod (19), one end of the sliding rod (19) is fixedly connected to a limiting block (22), the outer wall of the limiting block (22) is fixedly connected to a plurality of positioning keys (23), a limiting groove (21) is provided on one side of one connecting gear (16) among the plurality of connecting gears (16), a No. 2 spring (20) is movably provided on the inner side of the fixed cylinder (18), a permanent magnet (24) is fixedly provided on the other end of the sliding rod (19), and an electromagnet (25) is fixedly provided on one side of the fixed cylinder (18).

2. A prestressed concrete pipe pile construction positioning device according to claim 1, characterized in that: The adjustment mechanism further includes a connecting seat (26), the connecting seat (26) is fixedly connected to the fixing frame (1), one side of the connecting seat (26) is slidably connected to a support plate (28), one side of the top of the connecting seat (26) is fixedly connected to a No. 3 electric push rod (27), the output end of the No. 3 electric push rod (27) is fixedly connected to the support plate (28), and the height of the support plate (28) is lower than the height of the guide plate (4) when it is at the top dead center.

3. A prestressed concrete pipe pile construction positioning device according to claim 1, characterized in that: The support mechanism further comprises a sliding block (11), the lifting ring (10) is fixedly connected to the lifting plate (2), an annular sliding groove (13) is provided on the top surface of the lifting ring (10), the sliding groove (13) is slidably connected to the sliding block (11), the top of the sliding block (11) is hinged with a support block (12), and the top of the support block (12) is set to an arc surface.

4. A prestressed concrete pipe pile construction positioning device according to claim 3, characterized in that: One side of the guide plate (4) is fixedly connected to a No. 1 fixed plate (17), the fixed cylinder (18) is fixedly connected to the No. 1 fixed plate (17), and the acting force between the electromagnet (25) and the fixed cylinder (18) is a repulsive force, and the magnitude of the repulsive force is greater than the elastic force of the No. 2 spring (20).

5. A prestressed concrete pipe pile construction positioning device according to claim 1, characterized in that: One side of the guide plate (4) is fixedly connected to a second fixing plate (33), one side of the second fixing plate (33) is rotatably connected to an adjusting gear (34), the adjusting gear (34) and the corresponding connecting gear (16) are meshed with each other, one side of the guide plate (4) is rotatably connected to a transmission shaft (35), and one end of the transmission shaft (35) is provided with a one-way transmission mechanism; The other end of the transmission shaft (35) is fixedly connected to a connecting disk (36), one end of the connecting disk (36) is fixedly connected to an adjusting ring (29), one side of the adjusting ring (29) is an inclined surface, one side of the guide plate (4) is slidably connected to a sliding plate (30), the sliding plate (30) is rotatably engaged with the guide roller (5), one end of the sliding plate (30) is fixedly connected to an adjusting rod (32), one side of the sliding plate (30) is fixedly connected to a reset spring (31), one end of the reset spring (31) is fixedly connected to the guide plate (4).

6. A prestressed concrete pipe pile construction positioning device according to claim 5, characterized in that: The one-way transmission mechanism comprises a ratchet gear (37), the transmission shaft (35) is fixedly connected to the ratchet gear (37), one side of the adjustment gear (34) is rotatably connected to a stop pawl (40), one side of the stop pawl (40) is fixedly connected to a No. 3 spring (41), one end of the No. 3 spring (41) is fixedly connected to the adjustment gear (34), and the direction of rotation of the ratchet gear (37) driven by the adjustment gear (34) is adapted to the direction of rotation of the guide roller (5) driven by the pile body when the guide plate (4) rises relative to the pile body.

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