Cast-in-situ bored pile head protection structure

Abstract

The invention belongs to the technical field of pile structures, and particularly discloses a cast-in-situ bored pile head protection structure which comprises fixing bases, elastic cushion blocks are fixedly connected to the bottoms of the fixing bases, pile head protection shells are fixedly connected to the tops of the fixing bases, and the fixing bases are uniformly distributed at the bottoms of the pile head protection shells. The top of the pile head protection shell is fixedly connected with a drying dust removal device, the inner wall of the pile head protection shell is fixedly connected with a pile head protection device, and a pile head is arranged in the pile head protection device. The pile head is completely covered with the pile head protection shell, external collision and friction can be isolated, and foundation protection is formed. Through the drying and dust removing device, moisture of pile heads and steel bars can be rapidly dried, meanwhile, constant temperature in the shell is maintained, and concrete cracking or steel bar damage caused by temperature difference is avoided; moist air and dust can enter the dust removing and drying mechanism and are discharged after being purified and adsorbed; rust and cement residues on the surface of the pile head steel bar can be removed through the steel bar cleaning device, and the mechanical property is guaranteed.

Description

Technical Field

[0001] This invention belongs to the field of pile structure technology, specifically a pile head protection structure for bored cast-in-place piles. Background Technology

[0002] The pile head of a bored pile is a crucial component connecting the pile body and the pile cap, and its structural integrity directly affects the overall bearing capacity and durability of the pile foundation. After construction, the pile head undergoes curing and pile breaking procedures. It is susceptible to erosion from rainwater and debris accumulation, leading to steel reinforcement corrosion and concrete cracking. Traditional protection methods often involve simple coverings, which offer poor protection and allow dust and scale to accumulate on the steel reinforcement surface, affecting the subsequent connection strength with the pile cap. With increasing demands for pile foundation quality in construction projects, there is an urgent need for integrated pile head protection structures with dustproof, rustproof, and waterproof functions to ensure stable pile head performance.

[0003] Traditional bored pile heads are susceptible to erosion by rainwater and debris; the reinforcing bars are prone to rust and scale buildup, affecting connection strength; there is a lack of targeted drying and dust removal design, making the concrete prone to cracking; and the protective structure has poor adaptability, making it difficult to adapt to different pile head specifications. Summary of the Invention

[0004] To solve the above technical problems, the present invention is implemented through the following technical solution: A pile head protection structure for bored cast-in-place piles includes a fixed base, an elastic pad fixedly connected to the bottom of the fixed base, a pile head protection shell fixedly connected to the top of the fixed base, multiple sets of fixed bases evenly distributed at the bottom of the pile head protection shell, a drying and dust removal device fixedly connected to the top of the pile head protection shell, a pile head protection device fixedly connected to the inner wall of the pile head protection shell, and a pile head disposed inside the pile head protection device. The drying and dust removal device includes a supporting top base. A heating mechanism is fixedly connected to the top of the supporting top base. One side of the heating mechanism is connected to the air inlet of a first air pump through a pipe. The air outlet of the first air pump is connected to the air outlet through a pipe. A first exhaust port is opened at the bottom of the supporting top base, located on one side of the first exhaust port. The first exhaust port is connected to a dust removal and drying mechanism through a pipe. The bottom of the dust removal and drying mechanism is fixedly connected to the top of the supporting top base. The bottom of the first air pump is fixedly connected to the top of the supporting top base through a bracket. A rebar cleaning device is fixedly connected to the bottom of the supporting top base, located between the first air outlet and the first exhaust port. One side of the top of the supporting top base penetrates the pile head protective shell and is fixedly connected to the pile head protective shell.

[0005] The rebar cleaning device includes a first electric telescopic rod, the movable end of which is fixedly connected to a supporting shell. A first motor is fixedly connected to the top of the inner wall of the supporting shell via a motor bracket. The drive shaft of the first motor passes through the bottom of the supporting shell and is fixedly connected to a supporting top plate. A cleaning tank is fixedly connected to the bottom of the supporting top plate. A first cleaning roller is rotatably connected to the bottom of the supporting top plate, located on one side of the cleaning tank. The fixed end of a spring telescopic rod is fixedly connected to the end of the first cleaning roller away from the supporting top plate. A second cleaning roller is fixedly connected to the movable end of the spring telescopic rod. A first cleaning brush head is fixedly connected to the bottom of the second cleaning roller.

[0006] Preferably, the fixed end of the first electric telescopic rod is fixedly connected to the bottom of the support top plate, and the first cleaning roller is provided in multiple sets and evenly distributed at the bottom of the support top plate.

[0007] Preferably, the cleaning tank includes a cleaning shell. The top of the inner wall of the cleaning shell is fixedly connected to the fixed end of a second electric telescopic rod via a bracket. The movable end of the second electric telescopic rod is fixedly connected to a press-out piston. A connection port is provided on one side of the cleaning shell. Multiple sets of connection ports are provided and evenly distributed on the cleaning shell. A first guide slide is fixedly connected to the top and bottom of the inner wall of the connection port. A brush head mechanism is slidably connected to one side of the first guide slide. Multiple sets of brush head mechanisms are provided and evenly distributed on the inner wall of the cleaning shell. A rust inhibitor tank is fixedly connected to the bottom of the inner wall of the cleaning shell. The top of the rust inhibitor tank is connected to the inlet of a first water pump via a pipe. The outlet of the first water pump is connected to a nozzle box via a pipe. A nozzle is connected to one side of the nozzle box. Multiple sets of nozzles are provided and evenly distributed on the nozzle box. The nozzle penetrates the cleaning shell and is slidably connected to the cleaning shell. A second cleaning brush head is fixedly connected to the bottom of the cleaning shell. The bottom of the first water pump is fixedly connected to the top of the rust inhibitor tank via a bracket.

[0008] Preferably, the top of the cleaning housing is fixedly connected to the bottom of the supporting top plate, and two sets of nozzle boxes are provided and symmetrically distributed inside the cleaning housing.

[0009] Preferably, the brush head mechanism includes a brush head bracket, the top of which is slidably connected to the inner wall of the cleaning housing via a first guide slide, a third cleaning brush head is fixedly connected to one side of the brush head bracket, a second guide slide is fixedly connected to the top and bottom of the inner wall of the brush head bracket, an inclined plate is slidably connected to the brush head bracket via the second guide slide, a first spring is fixedly connected to the side of the inclined plate near the third cleaning brush head, and the side of the first spring away from the inclined plate is fixedly connected to the brush head bracket.

[0010] Preferably, the pile head protection device includes a protective shell, with a third electric telescopic rod and a fourth electric telescopic rod fixedly connected to both sides of the protective shell. The movable ends of the third and fourth electric telescopic rods penetrate the protective shell and are respectively fixedly connected to a first protective pad and a second protective pad. Both the first and second protective pads are arc-shaped, with the outer diameter of the first protective pad being larger than that of the second protective pad. A fifth electric telescopic rod is fixedly connected to one side of the protective shell. The fixed ends of the third, fourth, and fifth electric telescopic rods are respectively fixedly connected to a first connecting block, a second connecting block, and a third connecting block. The first connecting block, the second connecting block, and the third connecting block are all fixedly connected to the inner wall of the pile head protection shell. The movable end of the fifth electric telescopic rod penetrates the protective shell and is fixedly connected to a compression protective pad.

[0011] The top of the protective shell is fixedly connected to the top of the inner wall of the pile head protective shell through a bracket, and two sets of the third connecting blocks are provided and symmetrically distributed on the pile head protective shell.

[0012] Preferably, the bottom of the protective housing is provided with a connecting groove, and the fixed end of the sixth electric telescopic rod is fixedly connected to the top of the inner wall of the connecting groove. Multiple sets of the sixth electric telescopic rod are provided and evenly distributed inside the connecting groove. A waterproof gasket is fixedly connected to the movable end of the sixth electric telescopic rod.

[0013] This invention provides a pile head protection structure for bored cast-in-place piles, which has the following beneficial effects: The protective shell completely covers the pile head, isolating it from external collisions and friction, thus forming a foundation protection. The drying and dust removal device can quickly dry the moisture in the pile head and reinforcing steel while maintaining a constant temperature inside the shell, preventing concrete cracking or reinforcing steel damage caused by temperature differences. Moist air and dust inside the protective shell can enter the dust removal and drying mechanism, be purified and adsorbed, and then discharged, ensuring that the inside of the shell is dry and clean, inhibiting reinforcing steel corrosion and concrete weathering. The reinforcing steel cleaning device can remove rust and cement residue from the surface of the pile head reinforcing steel, ensuring its mechanical properties. Attached Figure Description

[0014] Figure 1 A schematic diagram of the structure of the pile head protection structure for bored cast-in-place piles provided by the present invention; Figure 2 This is a schematic diagram showing the positional relationship between the pile head and the pile head protection structure of the bored cast-in-place pile in this invention; Figure 3 A cross-sectional view of the pile head protection structure of the bored pile provided by the present invention; Figure 4 This is a schematic diagram of the drying and dust removal device in this invention from a first-view perspective; Figure 5 This is a schematic diagram of the drying and dust removal device in this invention from a second perspective. Figure 6 This is a schematic diagram of the rebar cleaning device in this invention; Figure 7 This is a schematic diagram of the connection structure supporting the outer shell in this invention; Figure 8 This is a schematic diagram of the bottom structure of the cleaning tank in this invention; Figure 9 This is a schematic diagram of the connection structure of the second electric telescopic rod in this invention; Figure 10 This is a cross-sectional view of the cleaning tank in this invention; Figure 11 This is a schematic diagram of the brush head mechanism in this invention; Figure 12 This is a schematic diagram of the pile head protection device in this invention; Figure 13 This is a cross-sectional view of the protective shell for the pile head in this invention; Figure 14 This is a schematic diagram of the connection structure of the sixth electric telescopic rod in this invention.

[0015] In the diagram: 1. Fixed base; 2. Elastic pad; 3. Pile head protective shell; 4. Drying and dust removal device; 41. Support top seat; 42. Heating mechanism; 43. First air pump; 44. First air outlet; 45. First exhaust port; 46. Dust removal and drying mechanism; 47. Rebar cleaning device; 471. First electric telescopic rod; 472. Support shell; 473. First motor; 474. Support top plate; 475. Cleaning tank; 4751. Cleaning shell; 4752. Second electric telescopic rod; 4753. Pressing piston; 4754. Connection port; 4755. First guide slide; 4756. Brush head mechanism; 47561. Brush head bracket; 47562. Third cleaning brush head; 47563. Second guide slide; 4756 4. Inclined plate; 47565. First spring; 4757. Rust inhibitor tank; 4758. First water pump; 4759. Nozzle housing; 47510. Nozzle; 47511. Second cleaning brush head; 476. First sweeping roller; 477. Spring telescopic rod; 478. Second sweeping roller; 479. First cleaning brush head; 5. Pile head protection device; 51. Protective housing; 52. Third electric telescopic rod; 53. Fourth electric telescopic rod; 54. First protective pad; 55. Second protective pad; 56. Fifth electric telescopic rod; 57. First connecting block; 58. Second connecting block; 59. Third connecting block; 510. Pressing protective pad; 511. Connecting groove; 512. Sixth electric telescopic rod; 513. Waterproof gasket; 6. Pile head. Detailed Implementation

[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on 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.

[0017] For the first embodiment, please refer to... Figures 1-5 This invention provides a technical solution that solves the problem of insufficient protection for the pile head of bored cast-in-place piles, which leads to easy damage to the reinforcing steel bars and pile head 6 of the pile head: a pile head protection structure for bored cast-in-place piles includes a fixed base 1, an elastic pad 2 fixedly connected to the bottom of the fixed base 1, a pile head protection shell 3 fixedly connected to the top of the fixed base 1, multiple sets of fixed base 1 evenly distributed at the bottom of the pile head protection shell 3, a drying and dust removal device 4 fixedly connected to the top of the pile head protection shell 3, a pile head protection device 5 fixedly connected to the inner wall of the pile head protection shell 3, and a pile head 6 disposed inside the pile head protection device 5; The drying and dust removal device 4 includes a support top 41. A heating mechanism 42 is fixedly connected to the top of the support top 41. The air inlet of a first air pump 43 is connected to one side of the heating mechanism 42 through a pipe. The air outlet of the first air pump 43 is connected to a first air outlet 44 through a pipe. A first exhaust port 45 is opened at the bottom of the support top 41 and on the side of the first air outlet 44. The first exhaust port 45 is connected to a dust removal and drying mechanism 46 through a pipe. The bottom of the dust removal and drying mechanism 46 is fixedly connected to the top of the support top 41. The bottom of the first air pump 43 is fixedly connected to the top of the support top 41 through a bracket. A rebar cleaning device 47 is fixedly connected to the bottom of the support top 41 between the first air outlet 44 and the first exhaust port 45. A pile head protective shell 3 penetrates one side of the top of the support top 41 and is fixedly connected to the pile head protective shell 3.

[0018] In use, first, the elastic pad 2 at the bottom of the fixed base 1 is attached to the ground at the bottom of the drilled pile head. The buffering characteristics of the elastic pad 2 are used to reduce the impact of ground settlement or external force impact on the pile head, and the protective shell 3 of the pile head completely covers the pile head 6 to isolate it from external collisions and friction. Then, the drying and dust removal device 4 is started to dry and remove dust. Specifically, the heating mechanism 42 on the support top 41 heats the air, and the first air pump 43 sends the hot air through the first air outlet 44 into the inside of the protective shell 3 of the pile head. The hot air evenly covers the surface of the pile head 6 and the reinforcing steel, quickly drying the residual moisture. At the same time, the heating mechanism 42 maintains a constant temperature inside the protective shell 3 of the pile head to prevent the concrete of the pile head from cracking or the reinforcing steel from being damaged by thermal expansion and contraction due to excessive temperature difference. The humid air and dust inside the protective shell 3 of the pile head enter the dust removal and drying mechanism 46 through the first exhaust port 45. After purification and moisture adsorption, they are discharged to ensure that the inside of the protective shell 3 of the pile head maintains a dry and clean environment. Before installation and during regular maintenance, the exposed steel bars of the pile head 6 can be treated by the steel bar cleaning device 47 at the bottom of the support top seat 41. This effectively removes impurities such as rust and cement residue from the steel bar surface, ensuring the integrity of the steel bar's mechanical properties. This solves the problem of easy damage to the pile head of the bored pile, extends the service life of the pile head 6, and provides a reliable guarantee for the overall structural safety of the bored pile.

[0019] For the second embodiment, please refer to... Figures 1-7 Based on the first embodiment, the present invention provides a technical solution for cleaning and protecting the surface of reinforcing bars: the reinforcing bar cleaning device 47 includes a first electric telescopic rod 471, the movable end of the first electric telescopic rod 471 is fixedly connected to a supporting shell 472, the top of the inner wall of the supporting shell 472 is fixedly connected to a first motor 473 through a motor bracket, the drive shaft of the first motor 473 passes through the bottom of the supporting shell 472 and is fixedly connected to a supporting top plate 474, the bottom of the supporting top plate 474 is fixedly connected to a cleaning tank 475, the bottom of the supporting top plate 474 and the part located on one side of the cleaning tank 475 is rotatably connected to a first cleaning roller 476, the end of the first cleaning roller 476 away from the supporting top plate 474 is fixedly connected to the fixed end of a spring telescopic rod 477, the movable end of the spring telescopic rod 477 is fixedly connected to a second cleaning roller 478, and the bottom of the second cleaning roller 478 is fixedly connected to a first cleaning brush head 479.

[0020] The fixed end of the first electric telescopic rod 471 is fixedly connected to the bottom of the support top plate 41, and multiple sets of the first cleaning roller 476 are provided and evenly distributed at the bottom of the support top plate 474.

[0021] When in use, the rebar cleaning device 47 is activated to clean and protect the exposed rebar at the pile head 6. Specifically, the first electric telescopic rod 471 is activated, its movable end pushing the support housing 472 downwards. The height is adjusted according to the exposed rebar length, so that the cleaning tank 475, the first cleaning roller 476, and the second cleaning roller 478 at the bottom of the support top plate 474 are close to the rebar surface, ensuring no gaps during cleaning. Then, the first motor 473 inside the support housing 472 is activated, its drive shaft driving the support top plate 474 to rotate, simultaneously driving the cleaning tank 475 and multiple evenly distributed first cleaning rollers 476 to rotate. The cleaning tank 475 rotates around... The steel bar rotates, and the outer perimeter of the steel bar is swept. The first electric telescopic rod 471 drives the spring telescopic rod 477 at the bottom of the first cleaning roller 476 to move downward. When the first cleaning brush head 479 at the bottom comes into contact with the surface of the pile head 6, it is pressed and extends in all directions, thereby adjusting the size of the area covered by the first cleaning brush head 479 to clean the connection between the steel bar and the pile head 6. At the same time, the first motor 473 rotates the second cleaning roller 478 to clean the side of the steel bar. The first cleaning brush head 479 at the bottom of the second cleaning roller 478 rotates accordingly to clean the surface of the pile head 6 and the gaps in the steel bar, avoiding rigid contact that could damage the steel bar itself. During the cleaning process, the first electric telescopic rod 471 can adjust the height of the supporting shell 472, and in conjunction with the spring telescopic rod 477, ensure that the first cleaning brush head 479 is always in contact with the surface of the pile head 6, thereby improving the cleaning effect. The debris generated during cleaning is promptly sucked in by the negative pressure airflow of the drying and dust removal device 4 in the first embodiment, avoiding secondary pollution caused by debris residue. This lays the foundation for subsequent rebar protection treatment, solves the problem of incomplete cleaning of the pile head 6 and rebar, and easy damage to the rebar, and effectively ensures the quality of rebar cleaning and the stability of subsequent use.

[0022] Third embodiment, please refer to Figures 1-9Based on the second embodiment, the present invention provides a technical solution to solve the problems of incomplete cleaning of traditional steel bar surfaces and the lack of protection after traditional cleaning, thereby improving the service life of steel bars: The cleaning tank 475 includes a cleaning shell 4751. The fixed end of a second electric telescopic rod 4752 is fixedly connected to the top of the inner wall of the cleaning shell 4751 via a bracket. The movable end of the second electric telescopic rod 4752 is fixedly connected to a pressing piston 4753. A connection port 4754 is provided on one side of the cleaning shell 4751. Multiple sets of connection ports 4754 are provided and evenly distributed on the cleaning shell 4751. A first guide slide 4755 is fixedly connected to the top and bottom of the inner wall of the connection port 4754. A brush head mechanism 4756 is slidably connected to one side of the first guide slide 4755. Multiple brush head mechanisms 4756 are evenly distributed on the inner wall of the cleaning housing 4751. A rust inhibitor tank 4757 is fixedly connected to the bottom of the inner wall of the cleaning housing 4751. The top of the rust inhibitor tank 4757 is connected to the inlet of the first water pump 4758 through a pipe. The outlet of the first water pump 4758 is connected to the nozzle housing 4759 through a pipe. A nozzle 47510 is connected to one side of the nozzle housing 4759. Multiple nozzles 47510 are evenly distributed on the nozzle housing 4759. The nozzles 47510 penetrate the cleaning housing 4751 and are slidably connected to the cleaning housing 4751. A second cleaning brush head 47511 is fixedly connected to the bottom of the cleaning housing 4751. The bottom of the first water pump 4758 is fixedly connected to the top of the rust inhibitor tank 4757 through a bracket.

[0023] The top of the cleaning housing 4751 is fixedly connected to the bottom of the supporting top plate 474, and two sets of nozzle boxes 4759 are provided and symmetrically distributed inside the cleaning housing 4751.

[0024] The brush head mechanism 4756 includes a brush head bracket 47561. The top of the brush head bracket 47561 is slidably connected to the inner wall of the cleaning housing 4751 via a first guide slide 4755. A third cleaning brush head 47562 is fixedly connected to one side of the brush head bracket 47561. A second guide slide 47563 is fixedly connected to both the top and bottom of the inner wall of the brush head bracket 47561. An inclined plate 47564 is slidably connected to the brush head bracket 47561 via the second guide slide 47563. A first spring 47565 is fixedly connected to the side of the inclined plate 47564 closest to the third cleaning brush head 47562. The side of the first spring 47565 away from the inclined plate 47564 is fixedly connected to the brush head bracket 47561.

[0025] In use, in the second embodiment, after activating the rebar cleaning device 47 and adjusting the first electric telescopic rod 471 to bring the cleaning tank 475 close to the rebar, the second electric telescopic rod 4752 inside the cleaning housing 4751 is activated. Its movable end pushes the pressing piston 4753 downward, squeezing the inclined plate 47564 of the brush head mechanism 4756. The inclined plate 47564 slides along the second guide rail 47563 on the inner wall of the brush head bracket 47561 and compresses the first spring 47565, while simultaneously pushing the brush head bracket 47561 through the first guide rail 47563. The third cleaning brush head 47562 extends outward from the cleaning housing 4751 until it is in close contact with the surface of the steel bar. The elasticity of the first spring 47565 buffers the pressure, allowing the third cleaning brush head 47562 to adaptively adjust to the curvature of the steel bar surface, avoiding rigid contact that could damage the steel bar. Then, the first motor 473 is activated, driving the support top plate 474 to rotate the cleaning tank 475. The second cleaning brush head 47511 at the bottom of the cleaning housing 4751 performs a circumferential sweeping motion around the steel bar, removing surface rust and cement residue. The extended third... The cleaning brush head 47562 penetrates deep into the side gaps and uneven parts of the reinforcing bar, working in conjunction with the first cleaning roller 476 and the second cleaning roller 478 in the second embodiment to clean the reinforcing bar surface in a synchronized manner, solving the problem of incomplete cleaning. The debris generated during cleaning is promptly removed by the drying and dust removal device 4 to avoid secondary pollution. After cleaning, the first water pump 4758 at the top of the rust inhibitor tank 4757 is activated to draw the rust inhibitor from the rust inhibitor tank 4757 into two sets of symmetrical nozzle boxes 4759. The inhibitor is then sprayed through multiple evenly distributed nozzles 47510. The spray is in the form of a mist. As the cleaning tank 475 continues to rotate, the nozzle 47510 can rotate accordingly to adjust the spraying angle, so that the rust inhibitor covers the surface of the steel bar and quickly forms a dense rust-preventive protective film, filling the gap of lack of protection after traditional cleaning. During the operation, the first electric telescopic rod 471 can flexibly adjust the height of the cleaning tank 475 according to the exposed length of the steel bar, ensuring that the cleaning and spraying effect of different parts of the steel bar is consistent, improving the cleanliness of the steel bar, extending the service life of the steel bar, and further ensuring the structural stability of the bored pile head.

[0026] For the fourth embodiment, please refer to [link / reference]. Figures 1-14Based on the third embodiment, the present invention provides a technical solution that solves the problem of protecting the surface of the pile head 6: The pile head protection device 5 includes a protective shell 51. A third electric telescopic rod 52 and a fourth electric telescopic rod 53 are fixedly connected to both sides of the protective shell 51. The movable ends of the third electric telescopic rod 52 and the fourth electric telescopic rod 53 penetrate the protective shell 51 and are respectively fixedly connected to a first protective pad 54 and a second protective pad 55. The first protective pad 54 and the second protective pad 55 are both arc-shaped. The outer diameter of the first protective pad 54 is larger than that of the second protective pad 55. A fifth electric telescopic rod 56 is fixedly connected to one side of the protective shell 51. The fixed ends of the third electric telescopic rod 52, the fourth electric telescopic rod 53 and the fifth electric telescopic rod 56 are respectively fixedly connected to a first connecting block 57, a second connecting block 58 and a third connecting block 59. The first connecting block 57, the second connecting block 58 and the third connecting block 59 are all fixedly connected to the inner wall of the pile head protective shell 3. The movable end of the fifth electric telescopic rod 56 penetrates the protective shell 51 and is fixedly connected to a pressing protective pad 510.

[0027] The top of the protective shell 51 is fixedly connected to the top of the inner wall of the pile head protective shell 3 via a bracket, and two sets of the third connecting blocks 59 are provided and symmetrically distributed on the pile head protective shell 3.

[0028] The bottom of the protective housing 51 is provided with a connecting groove 511. The fixed end of the sixth electric telescopic rod 512 is fixedly connected to the top of the inner wall of the connecting groove 511. Multiple sets of the sixth electric telescopic rod 512 are provided and evenly distributed inside the connecting groove 511. A waterproof gasket 513 is fixedly connected to the movable end of the sixth electric telescopic rod 512.

[0029] In use, the pile head protection device 5 is activated to protect the surface of the pile head 6. First, based on the outer diameter of the pile head 6, the third electric telescopic rod 52 and the fourth electric telescopic rod 53, which are connected to the inner wall of the pile head protection shell 3, are activated. The third electric telescopic rod 52 is fixed by the first connecting block 57, and its movable end pushes the arc-shaped first protective pad 54 closer to the side of the pile head 6. The fourth electric telescopic rod 53 is fixed by the second connecting block 58, which drives the arc-shaped second protective pad 55 to simultaneously approach the side of the pile head 6. The outer diameter of the first protective pad 54 is larger than that of the second protective pad 55, which can adapt to different diameter areas of the pile head 6 to ensure a seamless fit. After the first protective pad 54 and the second protective pad 55 are completely in contact with the side of the pile head 6, the two sets of symmetrically distributed fifth electric telescopic rods are activated. 56, its movable end pushes and compresses the protective pad 510 to first fit with the first protective pad 54, and then further presses the first protective pad 54 and the second protective pad 55 together to eliminate the gaps in the fit, so as to prevent gas and water vapor from seeping in and causing corrosion or damage to the pile head 6. It adapts to the protection requirements of pile heads 6 with different outer diameters. Finally, it activates the multiple sets of sixth electric telescopic rods 512 in the bottom connecting groove 511 of the protective shell 51. Its movable end pushes the waterproof gasket 513 down, so that the waterproof gasket 513 fits tightly with the bottom or surrounding contact surface of the pile head 6 to form a bottom waterproof seal, further enhancing the protection effect and achieving protection of the surface of the pile head 6. It solves the problem of poor adaptability and easy gaps in the protection of traditional pile head 6, and further ensures the structural stability and service life of the drilled and grouted pile head.

[0030] Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A pile head protection structure for bored cast-in-place piles, characterized in that: Includes a fixed base (1), with an elastic pad (2) fixedly connected to the bottom of the fixed base (1), and a pile head protective shell (3) fixedly connected to the top of the fixed base (1). The fixed base (1) is provided with multiple sets and evenly distributed at the bottom of the pile head protective shell (3). A drying and dust removal device (4) is fixedly connected to the top of the pile head protective shell (3). A pile head protection device (5) is fixedly connected to the inner wall of the pile head protective shell (3), and a pile head (6) is provided inside the pile head protection device (5). The drying and dust removal device (4) includes a support top seat (41), a heating mechanism (42) is fixedly connected to the top of the support top seat (41), the air inlet of a first air pump (43) is connected to one side of the heating mechanism (42) through a pipe, the air outlet of the first air pump (43) is connected to a first air outlet (44) through a pipe, a first exhaust port (45) is opened on the bottom of the support top seat (41) and on the side of the first air outlet (44), the first exhaust port (45) is connected to a dust removal and drying mechanism (46) through a pipe, the bottom of the dust removal and drying mechanism (46) is fixedly connected to the top of the support top seat (41), the bottom of the first air pump (43) is fixedly connected to the top of the support top seat (41) through a bracket, a steel bar cleaning device (47) is fixedly connected to the bottom of the support top seat (41) in the middle between the first air outlet (44) and the first exhaust port (45), and a pile head protective shell (3) is fixedly connected to one side of the top of the support top seat (41).

2. The pile head protection structure for bored cast-in-place piles according to claim 1, characterized in that: The rebar cleaning device (47) includes a first electric telescopic rod (471), the movable end of the first electric telescopic rod (471) is fixedly connected to a support shell (472), the top of the inner wall of the support shell (472) is fixedly connected to a first motor (473) through a motor bracket, the drive shaft of the first motor (473) passes through the bottom of the support shell (472) and is fixedly connected to a support top plate (474), the bottom of the support top plate (474) is fixedly connected to a cleaning tank (475), the bottom of the support top plate (474) and the part located on one side of the cleaning tank (475) is rotatably connected to a first cleaning roller (476), the end of the first cleaning roller (476) away from the support top plate (474) is fixedly connected to the fixed end of a spring telescopic rod (477), the movable end of the spring telescopic rod (477) is fixedly connected to a second cleaning roller (478), and the bottom of the second cleaning roller (478) is fixedly connected to a first cleaning brush head (479).

3. The pile head protection structure for bored cast-in-place piles according to claim 2, characterized in that: The fixed end of the first electric telescopic rod (471) is fixedly connected to the bottom of the support top plate (41), and the first cleaning roller (476) is provided in multiple sets and evenly distributed at the bottom of the support top plate (474).

4. The pile head protection structure for bored cast-in-place piles according to claim 2, characterized in that: The cleaning tank (475) includes a cleaning shell (4751). A fixed end of a second electric telescopic rod (4752) is fixedly connected to the top of the inner wall of the cleaning shell (4751) via a bracket. A pressing piston (4753) is fixedly connected to the movable end of the second electric telescopic rod (4752). A connection port (4754) is provided on one side of the cleaning shell (4751). Multiple sets of connection ports (4754) are evenly distributed on the cleaning shell (4751). First guide rails (4755) are fixedly connected to the top and bottom of the inner wall of the connection port (4754). A brush head mechanism (4756) is slidably connected to one side of the first guide rail (4755). Multiple sets of brush head mechanisms (4756) are evenly distributed on the inner wall of the cleaning shell (4751). A rust inhibitor tank (4757) is fixedly connected to the bottom of the inner wall of the cleaning shell (4751). The top of the rust inhibitor tank (4757) is connected to the inlet of a first water pump (4758) through a pipe. The outlet of the first water pump (4758) is connected to a nozzle box (4759) through a pipe. A nozzle (47510) is connected to one side of the nozzle box (4759). Multiple sets of nozzles (47510) are provided and evenly distributed on the nozzle box (4759). The nozzles (47510) penetrate the cleaning shell (4751) and are slidably connected to the cleaning shell (4751). A second cleaning brush head (47511) is fixedly connected to the bottom of the cleaning shell (4751). The bottom of the first water pump (4758) is fixedly connected to the top of the rust inhibitor tank (4757) through a bracket.

5. The pile head protection structure for bored cast-in-place piles according to claim 4, characterized in that: The top of the cleaning housing (4751) is fixedly connected to the bottom of the supporting top plate (474), and two sets of nozzle boxes (4759) are provided and symmetrically distributed inside the cleaning housing (4751).

6. The pile head protection structure for bored cast-in-place piles according to claim 4, characterized in that: The brush head mechanism (4756) includes a brush head bracket (47561). The top of the brush head bracket (47561) is slidably connected to the inner wall of the cleaning housing (4751) via a first guide slide (4755). A third cleaning brush head (47562) is fixedly connected to one side of the brush head bracket (47561). A second guide slide (47563) is fixedly connected to both the top and bottom of the inner wall of the brush head bracket (47561). An inclined plate (47564) is slidably connected to the brush head bracket (47561) via the second guide slide (47563). A first spring (47565) is fixedly connected to the side of the inclined plate (47564) closest to the third cleaning brush head (47562). The side of the first spring (47565) away from the inclined plate (47564) is fixedly connected to the brush head bracket (47561).

7. The pile head protection structure for bored cast-in-place piles according to claim 1, characterized in that: The pile head protection device (5) includes a protective shell (51). A third electric telescopic rod (52) and a fourth electric telescopic rod (53) are fixedly connected to both sides of the protective shell (51). The movable ends of the third electric telescopic rod (52) and the fourth electric telescopic rod (53) pass through the protective shell (51) and are respectively fixedly connected to a first protective pad (54) and a second protective pad (55). The first protective pad (54) and the second protective pad (55) are both arc-shaped. The outer diameter of the first protective pad (54) is larger than that of the second protective pad (55). The protective shell ( 51) A fifth electric telescopic rod (56) is fixedly connected to one side. The fixed ends of the third electric telescopic rod (52), the fourth electric telescopic rod (53) and the fifth electric telescopic rod (56) are respectively fixedly connected to a first connecting block (57), a second connecting block (58) and a third connecting block (59). The first connecting block (57), the second connecting block (58) and the third connecting block (59) are all fixedly connected to the inner wall of the pile head protective shell (3). The movable end of the fifth electric telescopic rod (56) penetrates the protective shell (51) and is fixedly connected to a pressure protective pad (510).

8. The pile head protection structure for bored cast-in-place piles according to claim 7, characterized in that: The top of the protective shell (51) is fixedly connected to the top of the inner wall of the pile head protective shell (3) by a bracket, and the third connecting block (59) is provided in two sets and symmetrically distributed on the pile head protective shell (3).

9. The pile head protection structure for bored cast-in-place piles according to claim 7, characterized in that: The bottom of the protective housing (51) is provided with a connecting groove (511). The top of the inner wall of the connecting groove (511) is fixedly connected to the fixed end of the sixth electric telescopic rod (512). The sixth electric telescopic rod (512) is provided in multiple sets and is evenly distributed inside the connecting groove (511). The movable end of the sixth electric telescopic rod (512) is fixedly connected to a waterproof gasket (513).

Images