Prestressed concrete pipe pile construction positioning device

Abstract

The invention relates to the technical field of positioning devices for building construction, and discloses a prestressed concrete pipe pile construction positioning device which comprises a fixing frame, a plurality of soil nails are fixedly connected to the bottom of the fixing frame, a plurality of lifting plates are slidably connected to the top of the fixing frame in a clamped mode, and a plurality of guide plates are arranged at the top of the fixing frame. An adjusting mechanism is arranged on the inner side of the fixing frame, a supporting mechanism used for bearing a welding gun is arranged on the inner side of the fixing frame, and the supporting mechanism comprises a lifting ring. The adjusting mechanism is matched with the guide plate for transmission to drive the guide roller to ascend before pile splicing, so that the guide roller is matched with the first electric push rod for positioning and centering of a pile body of a butt joint pile and moves synchronously with the pile body of the butt joint pile subsequently to be in butt joint with the pile body at the bottom, and therefore the height of the lifting ring is adjusted according to the height of the top face of the pile body at the bottom; the follow-up supporting blocks with the corresponding heights can assist in pile splicing operation, and the overall pile feeding efficiency and the pile pressing quality are improved.

Description

Technical Field

[0001] This application relates to the technical field of positioning devices for construction, and particularly to a positioning device for the construction of prestressed concrete pipe piles. Background Art

[0002] With the development of urbanization, higher-rise building forms have been widely used. As the number of floors increases, the load on the upper structure also increases continuously. The design of shallow foundations cannot meet the load design requirements. Therefore, the use of prestressed high-strength concrete pipe pile technology during construction has become an inevitable trend. When a pile driver presses a prestressed high-strength concrete pipe pile, construction workers respectively use a total station to measure the horizontal and vertical azimuth angles of the control points on the design baseline and the connection line of the pile. They cooperate with the jib to lift the pile body and correct the verticality of the pile body axis and the position corresponding to the control points, and then press the pile. After pressing a single pile body, the position of the next pile body is corrected in the same way, and the pile body is docked with the remaining part of the previous pile body by means of a docking device. Then, the construction workers use a welding torch to weld the joints manually, and sequentially complete the positioning, docking, and pile feeding of each pile body.

[0003] However, when traditionally positioning and constructing prestressed concrete pipe piles, multiple construction workers need to cooperate with each other, and during the pile pressing process, the deviation and inclination of the pile body need to be detected multiple times, which reduces the positioning efficiency and consumes human resources. When positioning the pile body during the construction process through a centering mechanism, for example, an installation frame is set up, and the installation frame is fixed to the soil through soil nails. Multiple sets of telescopic push rods are arranged on the fixed frame to cooperate with centering the pile body. However, when using this centering mechanism, after the previous pile body is pressed, a part of the pile body needs to be left above the soil for subsequent pile connection, and this part of the pile body is located inside the centering mechanism. It is difficult for the pile feeding mechanism to continue feeding this part of the pile body without interfering with the centering mechanism, resulting in the need for manual assistance in positioning or using an additional docking device for positioning when lifting and docking the next pile body, leading to a reduction in positioning efficiency. Summary of the Invention

[0004] This application provides a positioning device for the construction of prestressed concrete pipe piles, which has the advantages of ensuring that the pile body is always positioned and centered during the pile feeding process and being height-adjustable, so as to solve the problem of reduced construction efficiency caused by manual assistance in positioning the pile body.

[0005] To achieve the above object, this application adopts the following technical solution: A positioning device for the construction of prestressed concrete pipe piles includes a fixed frame. A plurality of soil nails are fixedly connected to the bottom of the fixed frame. A plurality of lifting plates are slidably clamped to the top of the fixed frame. A plurality of guide plates are arranged on the top of the fixed frame. An adjusting mechanism is arranged inside the fixed frame. A supporting mechanism for supporting a welding torch is arranged inside the fixed frame. The supporting mechanism includes a lifting ring.

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

[0007] Furthermore, the adjusting mechanism includes a first electric push rod. The lifting plate is fixedly connected to the first electric push rod. On both sides of the bottom of the fixed frame, second electric push rods are fixedly arranged. A plurality of connecting rods are arranged at the bottom of the fixed frame. The connecting rods are fixedly connected to the corresponding lifting plates. Two connecting plates are arranged at the bottom of the fixed frame. The connecting plates are fixedly connected to the corresponding connecting rods. A first spring is fixedly connected to the middle point of the top of the connecting plate. One end of the first spring is fixedly connected to the fixed frame. The output end of the second electric push rod is fixedly connected to a top block.

[0008] Furthermore, the adjusting mechanism further includes a connecting seat. The connecting seat is fixedly connected to the fixed frame. A support plate is slidably connected to one side of the connecting seat. A third electric push rod is fixedly connected to one side of the top of the connecting seat. The output end of the third electric push rod is fixedly connected to the support plate. The height of the support plate is lower than the height of the guiding plate when it is at the upper dead center.

[0009] Furthermore, the support mechanism further includes a sliding block. The lifting ring is fixedly connected to the lifting plate. An annular sliding groove is formed in the top surface of the lifting ring. The sliding groove is slidably connected to the sliding block. The top of the sliding block is hinged to a support block. The top of the support block is set to be an arc surface.

[0010] Furthermore, a plurality of guiding rollers are rotatably connected to one side of the guiding plate. A connecting shaft is drivingly connected to the inner side of the guiding rollers. The guiding plate is rotatably connected to the connecting shaft. A limiting mechanism is arranged on the guiding plate. The limiting mechanism is used to limit the rotation of the connecting shaft so as to limit the relative rotation of the guiding rollers with respect to the guiding plate.

[0011] The beneficial effects of the present invention are as follows: 1. A prestressed concrete pipe pile construction positioning device provided in the present application. Before pile splicing, the second electric push rod extends, and the transmission drives the guiding rollers to disengage from the contact with the pile body of the completed pile driving, so as to vacate the inner side to guide the pile body of the pile splicing. Therefore, during the entire pile driving construction process, centering positioning is performed on each pile body, ensuring that the position and angle of the pile body are within the rated range, and improving the construction efficiency of prestressed concrete pipe piles.

[0012] 2. A construction positioning device for prestressed concrete pipe piles provided by the present application uses a No. 3 electric push rod for temporary support during the positioning process of the pile body during pile splicing, enabling the guide rollers to perform centering and positioning on the pile body while restricting rotation. During the subsequent process of further lowering the pile body, the pile body drives the guide rollers to move synchronously, and then drives the lifting ring to move synchronously, thereby driving the support block to move to the corresponding height according to the reserved height of the already driven pile body, facilitating the subsequent support of the welding torch and assisting in welding while keeping the position of the welding torch and the circular joint unchanged, improving the pile splicing efficiency and pile splicing quality, and further improving the overall pile driving efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the provided drawings: Figure 1 It is a schematic diagram of the overall structure of the present application; Figure 2 It is a schematic diagram of the structure at the No. 2 electric push rod of the present application; Figure 3 It is a schematic sectional view of the structure at the sliding block of the present application; Figure 4 It is a schematic diagram of the structure at the guide roller of the present application; Figure 5 It is a schematic diagram of the structure at the No. 2 fixed plate of the present application; Figure 6 It is a schematic diagram of a partial structure at the transmission part of the present application; Figure 7 It is a schematic sectional view of the structure at the ratchet gear of the present application; Figure 8 It is a schematic sectional view of the structure at the fixed cylinder of the present application; Figure 9 It is a schematic diagram of the structure at the top block of the present application; Figure 10 It is a schematic diagram of the structure at the support plate of the present application.

[0014] In the figure: 1 - fixing frame, 2 - lifting plate, 3 - first electric push rod, 4 - guiding plate, 5 - guiding roller, 6 - connecting rod, 7 - connecting plate, 8 - second electric push rod, 9 - first spring, 10 - lifting ring, 11 - sliding block, 12 - supporting block, 13 - sliding groove, 14 - connecting shaft, 15 - driving gear, 16 - connecting gear, 17 - first fixing plate, 18 - fixing cylinder, 19 - sliding rod, 20 - second spring, 21 - limiting groove, 22 - limiting block, 23 - positioning key, 24 - permanent magnet, 25 - electromagnet, 26 - connecting seat, 27 - third electric push rod, 28 - supporting plate, 29 - adjusting ring, 30 - sliding plate, 31 - reset tension spring, 32 - adjusting rod, 33 - second fixing plate, 34 - adjusting gear, 35 - transmission shaft, 36 - connecting disc, 37 - ratchet gear, 38 - fourth electric push rod, 39 - pressing plate, 40 - detent pawl, 41 - third spring, 42 - top block. Specific implementation manner

[0015] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0016] Embodiment 1, as Figures 1 - 4 and Figure 9 , a construction positioning device for prestressed concrete pipe piles, including a fixing frame 1. A plurality of soil nails are fixedly connected to the bottom of the fixing frame 1. 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 be horizontal. A lifting plate 2 is slidably clamped at the top of the fixing frame 1. The lifting plate 2 can vertically slide up and down relative to the fixing frame 1 without detaching from the fixing frame 1. The number of the lifting plates 2 is set to be several, and several 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 with a first electric push rod 3. The first electric push rod 3 is horizontally arranged. The output end of the first electric push rod 3 is fixedly connected with a guiding plate 4. The top of the guiding plate 4 is set as an inclined slope for guiding the pile body of the prestressed concrete pile being lowered.

[0017] The first electric push rods 3 corresponding to the respective plurality of lifting plates 2 extend by a rated length, driving the guiding plates 4 to radially move closer in the horizontal direction for centering and positioning the pile body. Refer to Figure 2, a second electric push rod 8 is fixedly arranged at the bottom of the fixing frame 1. The number of the second electric push rods 8 is set to two, and the two second electric push rods 8 are arranged on both sides of the fixing frame 1. Connecting rods 6 with the same number as the number of the lifting plates 2 are arranged at the bottom of the fixing frame 1. The ends of the connecting rods 6 are fixedly connected to the corresponding lifting plates 2. Two connecting plates 7 are movably arranged 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. A first spring 9 is fixedly connected to the middle point of the top of the connecting plate 7. One end of the first spring 9 is fixedly connected to the fixing frame 1. Refer to Figure 9 , the output end of the second electric push rod 8 is fixedly connected with a top block 42.

[0018] 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 to descend. During use, the boom of the pile driver is used to lower the pile body from the top of the fixing frame 1 to the inside of the guide plate 4. At this time, the pile body is in an inclined state. A plurality of first electric push rods 3 extend, and the first electric push rods 3 drive the corresponding guide plates 4 to approach the pile body until the guide plates 4 abut against the side wall of the pile body. A plurality of guide plates 4 center the position of the pile body and drive the pile body to stand vertically. During the subsequent pile feeding process, the pile driver presses the part of the pile body located on the top of the guide plate 4 until the pile body is fed to the required position. 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 that of the guide plate 4. The guide plate 4 always guides the pile body during the pile feeding process, avoiding the deviation and inclination of the pile body during the pile feeding process, eliminating the need for manual measurement and positioning multiple times, and improving the pile feeding efficiency.

[0019] During pile splicing, the first electric push rods 3 contract and reset. The second electric push rods 8 extend to drive the top blocks 42 to move upward. The top blocks 42 abut against the bottom surface of the connecting plates 7 to push the connecting plates 7 to rise. The connecting plates 7 move to drive the connecting rods 6 to move. The connecting rods 6 drive the lifting plates 2 to move upward. The lifting plates 2 move to drive the first electric push rods 3 to move upward, thereby driving the guide plates 4 to move upward, so that the guide plates 4 are separated from the corresponding positions of the pile body that has completed pile feeding, leaving the space inside the guide plates 4 empty. When the pile body for pile splicing is lowered, the first electric push rods 3 extend again to position and center the pile body, so that the positions of the upper and lower pile bodies correspond. Subsequently, the joints are welded manually, eliminating the need for additional docking devices, improving the pile splicing efficiency, and thus improving the overall pile feeding efficiency.

[0020] Embodiment 2, as Figures 1 - 4 、 Figure 9 and Figure 10 , on the basis of Embodiment 1, a connecting seat 26 is fixedly connected to one side of the top of the fixing frame 1. A support plate 28 is slidably connected to one side of the connecting seat 26. A third electric push rod 27 is fixedly connected to one side of the top of the connecting seat 26. Refer to Figure 10The 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, that is, after the No. 2 electric push rod 8 is extended to the right position, 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, and the lifting ring 10 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 a 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 as an arc surface.

[0021] When connecting piles, the height of the pile body that has completed the delivery of the pile 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 of the connected pile, the bottom contacts the support plate 28, and the support plate 28 restricts 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 using the boom of the pile driver until the upper and lower pile bodies are in contact, completing the lowering of the connected pile body, so that the pile body moves downward and the guide plate 4 is driven to move through the friction force and the elastic force of the No. 1 spring 9. The movement of the guide plate 4 drives the lifting plate 2 to descend.

[0022] 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 with the decrease in the height of the pile body. In the subsequent welding process of the joint, the arc 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 with 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 joint between the two pile bodies 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 the welding quality and improve the welding efficiency, thereby improving the construction efficiency of the entire pile delivery process.

[0023] Embodiment three, as Figures 1 - 2 ,Figures 4 - 6 and Figure 8 , on the basis of the second embodiment, a plurality of guide rollers 5 are rotatably connected to one side of the guide plate 4. The guide rollers 5 are used to abut 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 use. Specifically, a connecting shaft 14 is drivingly connected to the inner side of the guide roller 5, and 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. A plurality of connecting gears 16 are rotatably connected to one side of the guide plate 4. The transmission gear 15 and the connecting gears 16 are arranged in sequence. The connecting gears 16 are used to drive the adjacent transmission gears 15 to rotate. The connecting gears 16 are meshed with the corresponding transmission gears 15. A first fixing plate 17 is fixedly connected to one side of the guide plate 4.

[0024] One side of the first fixing plate 17 is fixedly connected to a fixing cylinder 18. Refer to Figure 8 , a sliding rod 19 is slidably sleeved inside the fixing cylinder 18. The sliding rod 19 is T-shaped. The sliding rod 19 can axially slide relative to the fixing cylinder 18 without detaching from the fixing cylinder 18. One end of the sliding rod 19 is fixedly connected to a circular limiting block 22. A plurality of positioning keys 23 are fixedly connected to the outer wall of the limiting block 22. A limiting groove 21 is formed on one side of one of the plurality of connecting gears 16. The shape of the limiting groove 21 is adapted to the shape of the limiting block 22 and a plurality of grooves adapted to the positioning keys 23 are formed on the inner wall. A second spring 20 is movably arranged inside the fixing cylinder 18. The second spring 20 is used to drive the sliding rod 19 to contract into the fixing cylinder 18. A permanent magnet 24 is fixedly arranged at the other end of the sliding rod 19. An electromagnet 25 is fixedly arranged on one side of the fixing cylinder 18. The acting force between the electromagnet 25 and the fixing cylinder 18 is a repulsive force and the magnitude of the repulsive force is greater than the elastic force of the second spring 20.

[0025] During the process of pressing the pile body, the second spring 20 pushes the sliding rod 19 to contract, the limiting block 22 is disengaged from the limiting groove 21, and the connecting gear 16 can rotate relative to the fixed cylinder 18, so that the guiding roller 5 contacts the pile body and guides the pile body through rolling, reducing the wear between the pile body and the guiding roller 5. During the pile splicing process, with the first electric push rod 3 extended, the second electric push rod 8 extends. Then, the first electric push rod 3 contracts to facilitate the subsequent centering of the pile body. After the subsequent support plate 28 supports the pile body, the electromagnet 25 is activated to drive the limiting block 22 close to the limiting groove 21, and the second electric push rod 8 extends again, causing the limiting block 22 to be embedded in the limiting groove 21 to restrict the rotation of the guiding roller 5. The second electric push rod 8 determines whether the rolling restriction of the guiding roller 5 is in place according to the servo feedback of the friction between the guiding roller 5 and the pile body, enabling the subsequent continuous lowering of the pile body to drive the guiding plate 4 to descend, thereby ensuring that the lifting ring 10 and the spliced pile body descend synchronously while reducing the wear between the pile body and the guiding roller 5, facilitating subsequent welding, and further improving the reliability of the positioning device.

[0026] Embodiment 4, as Figures 1 - 7 , on the basis of Embodiment 3, a second fixed plate 33 is fixedly connected to one side of the guiding plate 4. A regulating gear 34 is rotatably connected to one side of the second fixed plate 33. The regulating gear 34 meshes with the corresponding connecting gear 16. A transmission shaft 35 is rotatably connected to one side of the guiding plate 4. One end of the transmission shaft 35 is fixedly connected to a ratchet gear 37. Refer to Figure 7 , a detent 40 is rotatably connected to one side of the regulating gear 34. A third spring 41 is fixedly connected to one side of the detent 40. One end of the third spring 41 is fixedly connected to the regulating gear 34. The detent 40 cooperates with the third spring 41 to enable the regulating gear 34 to drive the ratchet gear 37 to rotate in a one-way manner.

[0027] The rotation direction of the regulating gear 34 driving the ratchet gear 37 in a one-way manner is adapted to the rotation direction of the pile body driving the guiding roller 5 when the guiding plate 4 rises relative to the pile body. The other end of the transmission shaft 35 is fixedly connected to a connecting disc 36. One end of the connecting disc 36 is fixedly connected to an adjusting ring 29. The annular surface on one side of the adjusting ring 29 is an inclined plane. The connecting shaft 14 is in transmission connection with the guiding roller 5 through a flat key. A sliding plate 30 is slidably connected to one side of the guiding plate 4. The sliding plate 30 is rotationally clamped with the guiding roller 5. The sliding plate 30 can drive the guiding roller 5 to axially move when the guiding roller 5 rotates. One end of the sliding plate 30 is fixedly connected to an adjusting rod 32. The adjusting rod 32 corresponds to the position of the adjusting ring 29. A reset tension spring 31 is fixedly connected to one side of the sliding plate 30. One end of the reset tension spring 31 is fixedly connected to the guiding plate 4.

[0028] When the second 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 rotation of the guide roller 5 drives the transmission gear 15 and the connecting gear 16 to drive the adjustment gear 34 to rotate. The adjustment gear 34 cooperates with the stop claw 40 and the third spring 41 to drive the ratchet gear 37 to rotate unidirectionally. The ratchet gear 37 drives the transmission shaft 35 to rotate, the transmission shaft 35 drives the connecting disc 36 to rotate, and the connecting disc 36 drives the adjustment ring 29 to rotate, thereby changing the corresponding inclined plane area between the adjustment ring 29 and the adjustment rod 32.

[0029] Under the pulling of the reset tension spring 31, the reset tension spring 31 drives the sliding plate 30 to move. The sliding plate 30 drives the adjustment rod 32 to abut against the inclined surface of the adjustment ring 29. The adjustment ring 29 rotates relative to the adjustment rod 32, so that the abutted part changes, thereby making the sliding plate 30 approach or move away from the inner wall on one side of the guide plate 4 until the second electric push rod 8 completes its extension. The sliding plate 30 drives the guide roller 5 to move axially. Each time the second electric push rod 8 extends, the guide roller 5 makes an axial movement to form a reciprocating swing. When the guide roller 5 is disengaged from the contact with the pile body, the annular contact surface between the guide roller 5 and the pile body is changed, further improving the service life of the guide roller 5 and further improving the reliability of the positioning device.

[0030] Both sides of the bottom of the fixing frame 1 are fixedly connected with fourth electric push rods 38. The output ends of the fourth electric push rods 38 are fixedly connected with pressing plates 39. One side of the pressing plate 39 is rotatably connected with a plurality of connecting rollers. The fourth electric push rods 38 are used to cooperate with the pressing plates 39 to clamp and position the pile body that has been driven after the pile body for pile connection is lowered, further ensuring the accuracy of the pile body docking.

[0031] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A construction positioning device for prestressed concrete pipe piles, comprising a fixing frame (1), and a plurality of soil nails are fixedly connected to the bottom of the fixing frame (1), characterized in that, A plurality of lifting plates (2) are slidably clamped at the top of the fixing frame (1). A plurality of guide plates (4) are arranged at the top of the fixing frame (1). An adjusting mechanism is arranged inside the fixing frame (1). A supporting mechanism for supporting a welding torch is arranged inside the fixing frame (1). The supporting mechanism includes a lifting ring (10). The adjusting mechanism can drive the guide plate (4) for centering and positioning. Before pile splicing, the adjusting mechanism can drive the lifting plate (2) to rise, perform centering and positioning on the pile body, and then drive the lifting plate (2) to synchronously descend a rated distance according to the top surface height of the pile body at the bottom and the pile body at the top, so that the lifting plate (2) drives the lifting ring (10) to move synchronously.

2. The prestressed concrete pipe pile construction positioning device according to claim 1, characterized in that, The adjusting mechanism includes a first electric push rod (3). The lifting plate (2) is fixedly connected to the first electric push rod (3). Second electric push rods (8) are fixedly arranged on both sides of the bottom of the fixing frame (1). A plurality of connecting rods (6) are arranged 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 arranged at the bottom of the fixing frame (1). The connecting plates (7) are fixedly connected to the corresponding connecting rods (6). A first spring (9) is fixedly connected to the middle point of the top of the connecting plate (7). One end of the first spring (9) is fixedly connected to the fixing frame (1). The output end of the second electric push rod (8) is fixedly connected to a top block (42).

3. A construction positioning device for prestressed concrete pipe piles according to claim 2, characterized in that, The adjusting mechanism further includes a connecting seat (26). The connecting seat (26) is fixedly connected to the fixing frame (1). A support plate (28) is slidably connected to one side of the connecting seat (26). A third electric push rod (27) is fixedly connected to one side of the top of the connecting seat (26). The output end of the third 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 upper dead center.

4. A construction positioning device for prestressed concrete pipe piles according to claim 1, characterized in that, The supporting mechanism further includes a sliding block (11). The lifting ring (10) is fixedly connected to the lifting plate (2). An annular sliding groove (13) is formed in 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 to a support block (12). The top of the support block (12) is arc-shaped.

5. A construction positioning device for prestressed concrete pipe piles according to claim 2, characterized in that, A plurality of guide rollers (5) are rotatably connected to one side of the guide plate (4). A connecting shaft (14) is drivingly connected to the inside of the guide rollers (5). The guide plate (4) is rotatably connected to the connecting shaft (14). A limiting mechanism is arranged on the guide plate (4). The limiting mechanism is used to limit the rotation of the connecting shaft (14) so as to limit the relative rotation of the guide rollers (5) with respect to the guide plate (4).

6. The construction positioning device for prestressed concrete pipe piles according to claim 5, characterized in that, The limiting mechanism includes a plurality of transmission gears (15). The connecting shaft (14) is fixedly connected to the corresponding transmission gears (15). A plurality of connecting gears (16) are rotatably connected to one side of the guide plate (4). The connecting gears (16) are meshed with the corresponding transmission gears (15).

7. A construction positioning device for prestressed concrete pipe piles according to claim 6, characterized in that, The limiting mechanism further includes a fixed cylinder (18). A sliding rod (19) is slidably sleeved inside the fixed cylinder (18). One end of the sliding rod (19) is fixedly connected to a limiting block (22). A plurality of positioning keys (23) are fixedly connected to the outer wall of the limiting block (22). A limiting groove (21) is formed on one side of one of the plurality of connecting gears (16). A second spring (20) is movably arranged inside the fixed cylinder (18). The other end of the sliding rod (19) is fixedly provided with a permanent magnet (24). An electromagnet (25) is fixedly arranged on one side of the fixed cylinder (18).

8. A construction positioning device for prestressed concrete pipe piles according to claim 7, characterized in that, One side of the guide plate (4) is fixedly connected to a first fixing plate (17). The fixed cylinder (18) is fixedly connected to the first fixing plate (17). 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 second spring (20).

9. The prestressed concrete pipe pile construction positioning device according to claim 6, wherein, 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) meshes with the corresponding connecting gear (16). One side of the guide plate (4) is rotatably connected to a transmission shaft (35). A one-way transmission mechanism is arranged at one end of the transmission shaft (35). The other end of the transmission shaft (35) is fixedly connected to a connecting disc (36). One end of the connecting disc (36) is fixedly connected to an adjusting ring (29). One side of the adjusting ring (29) is an inclined slope. One side of the guide plate (4) is slidably connected to a sliding plate (30). The sliding plate (30) is rotatably clamped with a 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 tension spring (31). One end of the reset tension spring (31) is fixedly connected to the guide plate (4).

10. A construction positioning device for prestressed concrete pipe piles according to claim 9, characterized in that, The one-way transmission mechanism includes a ratchet gear (37). The transmission shaft (35) is fixedly connected to the ratchet gear (37). One side of the adjusting gear (34) is rotatably connected to a stop pawl (40). One side of the stop pawl (40) is fixedly connected to a third spring (41). One end of the third spring (41) is fixedly connected to the adjusting gear (34). The rotation direction in which the adjusting gear (34) drives the ratchet gear (37) unidirectionally is adapted to the rotation direction of the pile body driving the guide roller (5) when the guide plate (4) rises relative to the pile body.

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