Construction technology of large-diameter super-deep pile foundation of urban viaduct

Abstract

The present application relates to the field of building construction technology, specifically to a large-diameter super-deep pile foundation construction process for urban viaducts, comprising: a cavity is formed in the inside of a welding device, and a limiting groove is formed in the inner wall of one side of the cavity; the beneficial effect is that: the device is installed on the outside of the casing, when the steel reinforcement cage inside the casing needs to be extended, the upper steel reinforcement cage and the lower steel reinforcement cage are inserted, at this time the welding gun is adjusted to the appropriate welding height by the second motor, then the knob is rotated according to the outer diameter of the steel reinforcement cage to make the installation rod drive the upper welding gun to move horizontally, so that the welding port of the welding gun approaches the steel reinforcement cage, then the first motor is started to make the gear ring drive the upper welding assembly to rotate, at the same time the welding gun rotates and welds and fixes the steel reinforcement cage, the welding assembly is set to facilitate welding according to the outer diameter of the steel reinforcement cage, which liberates the labor force and improves the welding efficiency.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, specifically to the construction technology of large-diameter ultra-deep pile foundations for urban viaducts. Background Technology

[0002] With the rapid development of urban construction, the pressure on urban road traffic has increased dramatically. Therefore, in order to alleviate traffic pressure, many cities have built elevated roads in congested areas.

[0003] In existing technologies, pile foundations are required to support viaducts during construction. Pile foundation construction involves connecting the tops of several piles into a whole through a pile cap, which together bears dynamic and static loads. A pile is a vertical or inclined foundation component set in the soil. Its function is to penetrate soft, highly compressible soil layers or water and transfer the load borne by the pile to a harder, denser, or less compressible bearing layer. We usually refer to the piles in the pile foundation as foundation piles. During the construction of pile foundations, the following steps are generally performed: drilling and positioning, embedding steel casing, positioning the drilling rig, drilling, cleaning the hole, and hoisting the reinforcing cage.

[0004] However, due to the limited length of the reinforcing cage, multiple cages often need to be welded together to extend it. This is typically done by workers using handheld welding torches to weld the contact points of the cages in a circular motion, which is inefficient. Therefore, this invention proposes a construction process for large-diameter, ultra-deep pile foundations for urban viaducts to solve the aforementioned problems. Summary of the Invention

[0005] The purpose of this invention is to provide a construction process for large-diameter, ultra-deep pile foundations for urban viaducts, in order to solve the problem mentioned in the background art that, due to the limited length of the reinforcing cage, multiple reinforcing cages usually need to be welded to extend the length, and workers often use handheld welding torches to weld around the contact points of the reinforcing cages, which is an inefficient welding method.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a construction process for large-diameter, ultra-deep pile foundations for urban viaducts, comprising:

[0007] Welding equipment was used to weld the reinforcing cage;

[0008] The welding device has an internal cavity, a limiting groove is formed on one inner wall of the cavity, a through groove is formed on the inner wall of the cavity corresponding to the limiting groove, a drive shaft is provided on the inner wall of the cavity, a drive gear is fixedly connected to the outer wall of the drive shaft, and a first motor is installed on the outer wall of the welding device near the drive shaft.

[0009] A gear ring, wherein the outer wall of the gear ring meshes with the outer wall of the drive gear, a limiting ring is fixedly connected to one side of the outer wall of the gear ring and rotatably connected to the inner wall of the limiting groove, a plurality of fixing rods are provided at the end of the gear ring away from the limiting ring, a fixing ring is provided at one end of the fixing rod, a mounting frame is provided on one side of the outer wall of the fixing ring, adjusting grooves are provided on both sides of the inner wall of the mounting frame, a threaded rod is installed on the inner wall of the mounting frame, and a second motor is installed on the outer wall of the mounting frame near the threaded rod;

[0010] A fixing block, wherein adjusting blocks are fixedly connected to the outer walls on both sides of the fixing block and slidably connected to the inner wall of the adjusting groove; a fixing groove is provided on one side of the outer wall of the fixing block; a spring is provided on one side of the inner wall of the fixing groove; a sliding groove is provided on the inner wall of the fixing block; an adjusting screw is provided on the inner wall of the fixing block; and a positioning block is fixedly connected to one end of the adjusting screw.

[0011] The mounting rod has its outer wall slidably connected to the inner wall of the mounting frame. One end of the mounting rod is fixedly connected to a slide rod that is slidably connected to the inner wall of the slide groove. One end of the slide rod is provided with a limiting block that is fixedly connected to a spring. The end of the mounting rod away from the slide rod has a mounting groove. The inner wall of the mounting groove is fixedly connected to symmetrical fixing shafts. The outer wall of the fixing shafts is provided with a rotating block. One end of the rotating block is fixedly connected to a positioning ring. One end of the positioning ring is provided with a mounting plate. A welding torch is installed between the two positioning rings.

[0012] Preferably, the outer walls of both ends of the drive shaft are rotatably connected to the inner wall of the welding device, and the output end of the first motor is fixedly connected to one end of the drive shaft.

[0013] Preferably, one end of the fixing rod is fixedly connected to the outer wall of a toothed ring, and the fixing rod passes through the through groove.

[0014] Preferably, the outer walls of the two sides of the fixing ring are fixedly connected to one end of the fixing rod and one side of the outer wall of the mounting frame, respectively.

[0015] Preferably, the outer walls of both ends of the threaded rod are rotatably connected to the inner walls of both ends of the mounting frame, and the output end of the second motor is fixedly connected to one end of the threaded rod.

[0016] Preferably, the inner wall of the fixing block and the outer wall of the threaded rod are threaded together, and one end of the spring is fixedly connected to one side of the inner wall of the fixing groove.

[0017] Preferably, the outer wall of the positioning block and one side of the outer wall of the limiting block are in close contact, and a knob is fixedly connected to the outer wall of the end of the adjusting screw away from the positioning block.

[0018] Preferably, one side of the outer wall of the limiting block is fixedly connected to one end of the slide rod, and the inner wall of the rotating block is rotatably connected to the outer wall of the fixed shaft.

[0019] Preferably, the two positioning rings are fixed by bolts and nuts installed on the inner wall of the mounting plate.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] The entire device is installed on the outside of the casing. When the reinforcing cage needs to be extended inside the casing, the upper and lower reinforcing cages are inserted together. At this time, the welding torch is adjusted to a suitable welding height by the second motor. Then, according to the outer diameter of the reinforcing cage, the knob is turned to move the upper welding torch laterally, so that the welding port of the welding torch is close to the reinforcing cage. Then, the first motor is started to make the gear ring drive the upper welding assembly to rotate. At the same time, the welding torch welds and fixes the reinforcing cage while rotating. The welding assembly facilitates welding according to the outer diameter of the reinforcing cage, freeing up labor and improving welding efficiency. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a front sectional view of the overall structure of the present invention;

[0024] Figure 3 This is a top sectional view of the overall structure of the present invention;

[0025] Figure 4 This is an oblique sectional view of the overall structure of the present invention;

[0026] Figure 5 For the present invention Figure 2 Enlarged view of the structure of region A in the middle;

[0027] Figure 6 For the present invention Figure 2 Enlarged view of the structure of region B in the middle;

[0028] Figure 7 For the present invention Figure 3 Enlarged view of the structure of region C in the middle;

[0029] Figure 8 For the present invention Figure 4 Enlarged view of the structure of region D in the middle.

[0030] In the diagram: 1. Welding device; 2. Cavity; 3. Limiting groove; 4. Through groove; 5. Drive gear; 6. Drive shaft; 7. First motor; 8. Gear ring; 9. Limiting ring; 10. Fixing rod; 11. Fixing ring; 12. Mounting frame; 13. Adjusting groove; 14. Second motor; 15. Threaded rod; 16. Fixing block; 17. Adjusting block; 18. Fixing groove; 19. Spring; 20. Slide groove; 21. Mounting rod; 22. Slide rod; 23. Limiting block; 24. Adjusting screw; 25. Positioning block; 26. Knob; 27. Mounting groove; 28. Fixing shaft; 29. ​​Positioning ring; 30. Rotating block; 31. Mounting plate; 32. Bolt; 33. Welding torch. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the present invention clear and complete, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of the present invention, and are merely illustrative of the embodiments of the present invention. They are not intended to limit the embodiments of the present invention. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] In the description of this invention, it should be noted that the terms "center," "middle," "upper," "lower," "left," "right," "inner," "outer," "top," "bottom," "side," "vertical," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "a," "first," "second," "third," "fourth," "fifth," and "sixth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0034] For purposes of simplicity and illustration, the principles of the embodiments are described primarily by way of example. In the following description, numerous specific details are set forth to provide a thorough understanding of the embodiments. However, it will be apparent to those skilled in the art that these embodiments may not be limited to these specific details in practice. In some instances, well-known methods and structures have not been described in detail to avoid unnecessarily obscuring these embodiments. Furthermore, all embodiments can be used in combination with each other.

[0035] Please see Figures 1 to 8 This invention provides a technical solution: a construction process for large-diameter, ultra-deep pile foundations for urban viaducts, comprising the following steps:

[0036] Welding device 1 was used to weld the reinforcing cage;

[0037] The welding device 1 has an internal cavity 2. A limiting groove 3 is formed on one side of the inner wall of the cavity 2. A through groove 4 is formed on the inner wall of the cavity 2 corresponding to the limiting groove 3. A drive shaft 6 is provided on the inner wall of the cavity 2. A drive gear 5 is fixedly connected to the outer wall of the drive shaft 6. When the drive shaft 6 rotates, it drives the outer drive gear 5 to rotate simultaneously. A first motor 7 is installed on the outer wall of the welding device 1 near the drive shaft 6. The outer walls of both ends of the drive shaft 6 are rotatably connected to the inner wall of the welding device 1. The output end of the first motor 7 is fixedly connected to one end of the drive shaft 6. The first motor 7 drives the drive shaft 6.

[0038] The gear ring 8 has its outer wall meshing with the outer wall of the drive gear 5. A limiting ring 9 is fixedly connected to one side of the outer wall of the gear ring 8 and rotatably connected to the inner wall of the limiting groove 3, limiting the gear ring 8 without hindering its rotation. Several fixing rods 10 are provided at the end of the gear ring 8 away from the limiting ring 9, and a fixing ring 11 is provided at one end of the fixing rod 10. The fixing ring 11 rotates along with the rotation of the gear ring 8 on the inner wall of the through groove 4. A mounting frame 12 is provided on one side of the outer wall of the fixing ring 11. Adjustment grooves 13 are opened on both sides of the inner wall of the mounting frame 12. Threaded rods 1 are installed on the inner wall of the mounting frame 12. 5. A second motor 14 is installed on the outer wall of the mounting frame 12 near the threaded rod 15. One end of the fixing rod 10 is fixedly connected to the outer wall of the toothed ring 8. The fixing rod 10 passes through the through groove 4. The outer walls of both sides of the fixing ring 11 are fixedly connected to one end of the fixing rod 10 and one side of the outer wall of the mounting frame 12, respectively. The outer walls of both ends of the threaded rod 15 are rotatably connected to the inner walls of both ends of the mounting frame 12. When the threaded rod 15 rotates, it is threadedly connected to the inner wall of the fixing block 16, so that the fixing block 16 slides up and down on the inner wall of the mounting frame 12. The output end of the second motor 14 is fixedly connected to one end of the threaded rod 15.

[0039] The fixing block 16 has two outer walls fixedly connected to adjusting blocks 17 that are slidably connected to the inner wall of adjusting groove 13. One outer wall of the fixing block 16 has a fixing groove 18, one inner wall of the fixing groove 18 has a spring 19, and the inner wall of the fixing groove 18 has a sliding groove 20. The inner wall of the fixing block 16 has an adjusting screw 24, one end of the adjusting screw 24 is fixedly connected to a positioning block 25. When the adjusting screw 24 is rotated, the position of the positioning block 25 is changed, and the position of the limiting block 23 is changed under the action of the spring 19, thereby controlling the position of the mounting rod 21. The inner wall of the fixing block 16 is threadedly connected to the outer wall of the threaded rod 15. One side wall of the spring 19 is fixedly connected to one inner wall of the fixing groove 18. The outer wall of the positioning block 25 is in close contact with one outer wall of the limiting block 23. The outer wall of the adjusting screw 25 away from the positioning block 25 is fixedly connected to a knob 26 for easy rotation and adjustment of the adjusting screw 24.

[0040] Mounting rod 21, the outer wall of mounting rod 21 is slidably connected to the inner wall of mounting frame 12, one end of mounting rod 21 is fixedly connected to slide rod 22 which is slidably connected to the inner wall of slide groove 20, one end of slide rod 22 is provided with limiting block 23 which is fixedly connected to spring 19, the end of mounting rod 21 away from slide rod 22 is provided with mounting groove 27, the inner wall of mounting groove 27 is fixedly connected to symmetrical fixing shaft 28, the outer wall of fixing shaft 28 is provided with rotating block 30, one end of rotating block 30 is fixedly connected to positioning ring 29, one end of positioning ring 29 is provided with mounting plate 31, welding gun 33 is installed between the two positioning rings 29, one side of the outer wall of limiting block 23 is fixedly connected to one end of slide rod 22, the inner wall of rotating block 30 is rotatably connected to the outer wall of fixing shaft 28, so as to facilitate the opening and closing of positioning ring 29 to complete the disassembly and assembly of welding gun 33, and positioning ring 29 is fixed by bolts and nuts installed on the inner wall of mounting plate 31.

[0041] When this device is in operation, the entire device is installed on the outside of the casing. When it is necessary to extend the reinforcing cage placed inside the casing, the upper and lower reinforcing cages are inserted together. At this time, the welding torch is adjusted to a suitable welding height by the second motor 14. Then, according to the outer diameter of the reinforcing cage, the knob 2 is rotated to make the mounting rod 21 drive the upper welding torch 33 to move laterally, so that the welding port of the welding torch 33 is close to the reinforcing cage. Then, the first motor 7 is started to make the gear ring drive the upper welding assembly to rotate. At the same time, the welding torch welds and fixes the reinforcing cage while rotating. The welding assembly facilitates welding according to the outer diameter of the reinforcing cage, freeing up labor and improving welding efficiency.

[0042] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. Construction technology for large-diameter, ultra-deep pile foundations for urban viaducts, characterized by: Includes the following steps: Welding equipment (1) is used to weld the steel cage; The welding device (1) has a cavity (2) inside. A limiting groove (3) is opened on one side of the inner wall of the cavity (2). A through groove (4) is opened on the inner wall of the cavity (2) corresponding to the limiting groove (3). A drive shaft (6) is provided on the inner wall of the cavity (2). A drive gear (5) is fixedly connected to the outer wall of the drive shaft (6). A first motor (7) is installed on the outer wall of the welding device (1) near the drive shaft (6). A gear ring (8) is connected to the outer wall of a drive gear (5) by meshing. A limiting ring (9) is fixedly connected to one side of the outer wall of the gear ring (8) and rotates to the inner wall of the limiting groove (3). A number of fixing rods (10) are provided at one end of the gear ring (8) away from the limiting ring (9). A fixing ring (11) is provided at one end of the fixing rod (10). A mounting frame (12) is provided on one side of the outer wall of the fixing ring (11). Adjustment grooves (13) are provided on both sides of the inner wall of the mounting frame (12). A threaded rod (15) is installed on the inner wall of the mounting frame (12). A second motor (14) is installed on the outer wall of the mounting frame (12) near the threaded rod (15). A fixing block (16) is fixedly connected to two outer walls of the fixing block (16) and an adjusting block (17) is slidably connected to the inner wall of the adjusting groove (13). A fixing groove (18) is provided on one outer wall of the fixing block (16). A spring (19) is provided on one inner wall of the fixing groove (18). A sliding groove (20) is provided on the inner wall of the fixing groove (18). An adjusting screw (24) is provided on the inner wall of the fixing block (16). A positioning block (25) is fixedly connected to one end of the adjusting screw (24). Mounting rod (21), the outer wall of mounting rod (21) is slidably connected to the inner wall of mounting frame (12), one end of mounting rod (21) is fixedly connected to slide rod (22) which is slidably connected to the inner wall of slide groove (20), one end of slide rod (22) is provided with limiting block (23) which is fixedly connected to spring (19), one end of mounting rod (21) away from slide rod (22) is provided with mounting groove (27), the inner wall of mounting groove (27) is fixedly connected to symmetrical fixing shaft (28), the outer wall of fixing shaft (28) is provided with rotating block (30), one end of rotating block (30) is fixedly connected to positioning ring (29), one end of positioning ring (29) is provided with mounting plate (31), and welding gun (33) is installed between the two positioning rings (29).

2. The construction technology for large-diameter ultra-deep pile foundations for urban viaducts according to claim 1, characterized in that: The outer walls of both ends of the drive shaft (6) are rotatably connected to the inner wall of the welding device (1), and the output end of the first motor (7) is fixedly connected to one end of the drive shaft (6).

3. The construction technology for large-diameter ultra-deep pile foundations for urban viaducts according to claim 1, characterized in that: One end of the fixing rod (10) is fixedly connected to the outer wall of a toothed ring (8), and the fixing rod (10) passes through the through groove (4).

4. The construction technology for large-diameter ultra-deep pile foundations for urban viaducts according to claim 3, characterized in that: The outer walls of the two sides of the fixing ring (11) are fixedly connected to one end of the fixing rod (10) and one side of the outer wall of the mounting frame (12).

5. The construction technology for large-diameter ultra-deep pile foundations for urban viaducts according to claim 4, characterized in that: The outer walls of both ends of the threaded rod (15) are rotatably connected to the inner walls of both ends of the mounting frame (12), and the output end of the second motor (14) is fixedly connected to one end of the threaded rod (15).

6. The construction technology for large-diameter ultra-deep pile foundations for urban viaducts according to claim 1, characterized in that: The inner wall of the fixing block (16) and the outer wall of the threaded rod (15) are threadedly connected, and one end of the side wall of the spring (19) is fixedly connected to one side of the inner wall of the fixing groove (18).

7. The construction technology for large-diameter ultra-deep pile foundations for urban viaducts according to claim 6, characterized in that: The outer wall of the positioning block (25) and one side of the outer wall of the limiting block (23) are in close contact, and a knob (26) is fixedly connected to the outer wall of the adjusting screw (24) away from the positioning block (25).

8. The construction technology for large-diameter ultra-deep pile foundations for urban viaducts according to claim 1, characterized in that: The outer wall of one side of the limiting block (23) is fixedly connected to one end of the slide rod (22), and the inner wall of the rotating block (30) is rotatably connected to the outer wall of the fixed shaft (28).

9. The construction technology for large-diameter ultra-deep pile foundations for urban viaducts according to claim 8, characterized in that: The two positioning rings (29) are fixed by bolts and nuts installed on the inner wall of the mounting plate (31).

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