Fly ash concrete hollow precast pile

Abstract

The invention discloses a fly ash concrete hollow precast pile, and relates to the field of building materials and pile foundation construction, and the fly ash concrete hollow precast pile comprises a concrete hollow pile body precast according to a concrete mixing proportion; in every two adjacent hollow pile bodies used for connection, a small head connected with the end of the upper hollow pile body in a prefabricated construction mode is arranged in a hollow cavity, away from one end of the small head, of the end of the lower hollow pile body in an extending mode. The outer walls of the two adjacent connected hollow pile bodies with the diameter smaller than that of the hollow pile bodies are further reinforced and connected through steel ring welding; and the hollow pile bodies which are sequentially connected and reinforced pass through a guide adjusting device for guiding. The hollow precast pile is green and environment-friendly, wastes are utilized, and materials and construction time are saved; moreover, the guiding and adjusting device can guide the connected hollow pile bodies and achieve the purpose of correcting deviation in motion when the connected hollow pile bodies are driven by a pile machine, so that the quality of constructed piles is guaranteed.

Description

Technical Field

[0001] The invention relates to the field of green building material construction, and specifically relates to a fly ash concrete hollow prefabricated pile. Background Art

[0002] Fly ash is a volcanic ash material and has no gelling properties. In the presence of water at room temperature, fly ash can undergo a secondary reaction with concrete to generate a water-insoluble calcium silicate hydrate gel. This not only reduces the possibility of dissolution, but also fills the pores inside the concrete, thereby improving the strength and impermeability of the concrete. Therefore, adding fly ash to precast concrete is not only a full utilization of the material, but also can improve the overall quality of the pile.

[0003] Fly ash concrete precast piles are concrete precast piles that use fly ash as a partial cement substitute. Fly ash is a byproduct of coal-fired power plants. As part of the building material, it has the following advantages: 1. Environmentally friendly: The use of fly ash can effectively reduce the use of cement, thereby reducing carbon dioxide emissions and alleviating environmental burden.

[0004] 2. Performance improvement: Fly ash can improve the workability, durability and impermeability of concrete, and enhance the compressive strength and frost resistance of concrete.

[0005] 3. Economy: Using fly ash can reduce material costs and improve the performance of precast piles, which has economic advantages in the long run.

[0006] 4. Weight reduction effect: Fly ash has a low density. Adding it to concrete can effectively reduce the weight of precast piles and reduce the difficulty of transportation and installation.

[0007] However, although fly ash concrete precast piles have some of the advantages mentioned above, when designing and using fly ash concrete precast piles, it is necessary to consider the dosage, properties, and compatibility with other materials of fly ash to ensure that the strength and durability of the precast piles meet the engineering requirements; and the early strength of precast piles mixed with fly ash is not as good as the bearing capacity of pure concrete, so the selection of construction machinery needs to be further considered. Summary of the invention

[0008] The objective of the present invention is achieved through the following technical solutions: A fly ash concrete hollow prefabricated pile, comprising a concrete hollow pile body prefabricated according to a concrete mix ratio, wherein the concrete mix ratio is as follows: Cement: 450 kg / m³; Fly ash: 90 kg / m³; Coarse aggregate: 1150 kg / m³; Fine aggregate: 700 kg / m³; Water: 180 kg / m³; Certain admixtures; The diameter of the outer wall of one end of the hollow pile body 20cm~25cm away from the pile head is smaller than the diameter of the hollow pile body, and the end of the hollow pile body is prefabricated and connected with a small head, and the diameter of the outer wall of the other end of the hollow pile body 20cm~25cm away from the pile head is also smaller than the diameter of the hollow pile body; In two adjacent hollow piles for connection, the small head of the upper hollow pile end prefabricated for connection is extended and placed in the hollow cavity of the lower hollow pile end away from the small head; The outer walls of two adjacently connected hollow piles, whose diameter is smaller than that of the hollow piles, are further reinforced and connected by welding steel rings; The hollow pile bodies which are connected and reinforced in sequence pass through the guide adjustment device for guiding, and enter into the pile hole foundation of the construction layout under the action of the pile driver.

[0009] Preferably, it comprises a guide positioning pedestal for being placed at the position of the foundation setting-out pile hole, the guide positioning pedestal is provided with a guide positioning hole for the hollow pile body, a movable mechanism for movably guiding the hollow pile body is installed on the guide positioning pedestal, and an adjustment mechanism for adjusting the hollow pile body is installed above the movable mechanism; The movable mechanism is movably arranged in a protective cylinder which is centrally arranged.

[0010] Preferably, the movable mechanism comprises a movable guide lifting disc; The movable guide lifting disc is provided with a movable guide passage opening for the hollow pile body to pass through and arranged coaxially with the guide positioning hole of the guide positioning bearing platform; The movable guide lifting disc is movably provided with movable guide rods on the four sides, one end of the movable guide rod is connected and fixed to the guide positioning bearing platform, and the other end of the movable guide rod is used to be connected and fixed to the support connecting steel plate, the adjustment mechanism is used to be installed and connected to the support connecting steel plate, and the support connecting steel plate is provided with a passage opening for the hollow pile body to pass through, and the passage opening is coaxially arranged with the guide positioning hole of the guide positioning bearing platform; One end of the protection tube is connected and fixed to the guide positioning support platform, and the other end of the protection tube is connected and fixed to the supporting connection steel plate.

[0011] Preferably, a hydraulic adjustment rod is provided between the supporting connection steel plate and the movable guide lifting disc to drive the movable guide lifting disc to move up and down along the movable guide rod, one end of the hydraulic adjustment rod is connected to the supporting connection steel plate, and the other end of the hydraulic adjustment rod is connected to the movable guide lifting disc; A movable limiting guide structure is movably arranged between the movable guide lifting disc and the guide positioning support platform.

[0012] Preferably, four movable limiting guide structures are provided, and are evenly and movably arranged around the upper part of the guide positioning hole of the guide positioning support platform; The movable limit guide structure comprises movable guide adjustment rollers, and the four movable guide adjustment rollers are relatively movable and adjustable; One end of the movable guide adjustment roller away from the guide positioning hole of the guide positioning support is rotatably connected to the movable adjustment rod through a rotating shaft, and the other end of the movable adjustment rod is hinged to the bottom end surface of the movable guide lifting disc through a hinge seat; The movable adjustment rod is provided with an inclined movable support rod at one end close to the guide positioning support platform; One end of the movable support rod is hinged to the movable adjustment rod through a hinge seat, and the other end of the movable support rod is hinged to the guide positioning support platform through a hinge seat.

[0013] Preferably, the adjustment mechanism comprises an adjustment support base, the adjustment support base is provided with a movable hole for the hollow pile body to pass through, and the movable hole is coaxially arranged with the guide positioning hole of the guide positioning bearing platform; A movable adjusting disc is arranged above the adjusting support base, and the movable adjusting disc is arranged through the center, and a hollow cavity opened through the center of the movable adjusting disc is used for the hollow pile body to pass through; A rubber protection ring is detachably mounted and connected around the hollow cavity formed in the center of the movable adjusting disc.

[0014] Preferably, a movable guide shaft is coaxially arranged above the movable hole of the adjustable support base, the movable guide shaft is through-centered and coaxially arranged with the movable hole of the adjustable support base, the through-centered cavity of the movable guide shaft is used for the hollow pile body to pass through, and the bottom end of the movable guide shaft is used to be connected and fixed with the adjustable support base; The adjustable support base and the movable adjustable disc are connected via a movable adjustable structure; The movable adjustment structure includes a first movable adjustment structure, a second movable adjustment structure and a third adjustment structure. The first movable adjustment structure, the second movable adjustment structure and the third adjustment structure are movably connected to the movable guide shaft. The first movable adjustment structure, the second movable adjustment structure and the third adjustment structure are movably connected to the movable adjustment disk for adjusting the movement of the movable adjustment disk.

[0015] Preferably, the first movable adjustment structure comprises a first movable rotating shaft; The first movable shaft is rotatably sleeved on the outer wall of the movable guide shaft through a bearing, the outer wall of one end of the first movable shaft close to the movable adjustment disk is connected to a first adjustment connection platform, the first adjustment connection platform is movably hinged to a first adjustment movable arm through a hinge seat, and the other end of the first adjustment movable arm is movably hinged to the side wall of the movable adjustment disk through a hinge seat; A first large bevel gear is connected to the outer wall of the other end of the first movable rotating shaft. The first large bevel gear is meshed with the first driving bevel gear. The first driving bevel gear is connected to the output end of the first driving servo motor through the rotating shaft. The first driving servo motor is connected and fixed to the adjustment support base through a motor mounting bracket.

[0016] Preferably, the second movable adjustment structure comprises a second movable rotating shaft; The second movable rotating shaft is rotatably sleeved on the outer wall of the first movable rotating shaft through a bearing, the outer wall of one end of the second movable rotating shaft close to the movable adjusting disc is connected with a second adjusting connecting platform, the second adjusting connecting platform is movably hinged with a second adjusting movable arm through a hinge seat, and the other end of the second adjusting movable arm is movably hinged to the side wall of the movable adjusting disc through a hinge seat; A second large bevel gear is connected to the outer wall of the other end of the second movable rotating shaft, and the second large bevel gear is meshed with the second driving bevel gear. The second driving bevel gear is connected to the output end of the second driving servo motor through the rotating shaft, and the second driving servo motor is connected and fixed to the adjustment support base through the motor mounting bracket.

[0017] Preferably, the third movable adjustment structure comprises a third movable rotating shaft; The third movable rotating shaft is rotatably sleeved on the outer wall of the second movable rotating shaft through a bearing, and the outer wall of one end of the third movable rotating shaft close to the movable adjusting disc is connected with a third adjusting connecting platform, and the third adjusting connecting platform is movably hinged with a third adjusting movable arm through a hinge seat, and the other end of the third adjusting movable arm is movably hinged to the side wall of the movable adjusting disc through a hinge seat; The outer wall of the other end of the third movable rotating shaft is connected to a third large bevel gear, and the third large bevel gear is meshed with the third driving bevel gear. The third driving bevel gear is connected to the output end of the third driving servo motor through a rotating shaft, and the third driving servo motor is connected and fixed to the adjustment support base through a motor mounting bracket.

[0018] The beneficial effects of the present invention are as follows: the purpose of the present invention is to provide a fly ash concrete hollow prefabricated pile, which is made according to a certain designed mix ratio. The prefabricated hollow pile body structure can not only utilize the discarded fly ash, be green and environmentally friendly, save materials and resources, and respond to the national call for green buildings, but also the hollow pile body structure ensures the overall quality of the pile body and can realize the rapid installation and connection of two hollow pile body structures, thereby saving construction time; and in addition, during construction, through the guide adjustment device used in conjunction with the hollow pile body, when the pile driver is driving the connected hollow pile body, the connected hollow pile body can be guided and the purpose of "correcting deviation in motion" can be achieved, thereby ensuring the quality of the constructed piles. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the connection effect of a fly ash concrete hollow precast pile of the present invention; Figure 2 It is a partial exploded schematic diagram of the connection effect of a fly ash concrete hollow precast pile of the present invention; Figure 3 This is a structural schematic diagram of a fly ash concrete hollow prefabricated pile of the present invention; Figure 4 It is a schematic diagram of the overall connection effect of the guide adjustment device for guiding the hollow precast fly ash concrete pile and the hollow precast fly ash concrete pile of the present invention; Figure 5 It is a schematic diagram of the connection structure of the guide adjustment device for guiding the hollow precast fly ash concrete piles of the present invention; Figure 6 It is a schematic diagram of the connection structure of the movable mechanism of the guide adjustment device for guiding the hollow precast fly ash concrete pile of the present invention; Figure 7 It is an exploded schematic diagram of the connecting structure of the movable mechanism of the guide adjustment device for guiding the hollow precast fly ash concrete pile of the present invention; Figure 8 It is an exploded schematic diagram of the movable limit guide structure and the supporting connection steel plate connection structure of the guide adjustment device for guiding the hollow precast fly ash concrete pile according to the present invention; Fig. 9 It is a schematic diagram of the connection structure of the movable limit guide structure of the guide adjustment device for guiding the hollow precast fly ash concrete pile of the present invention; Fig.10 It is a schematic diagram of the connection structure of the adjustment mechanism of the guide adjustment device for guiding the hollow precast fly ash concrete pile of the present invention; Fig.11 It is an exploded schematic diagram of the connection structure of the adjusting mechanism of the guiding adjusting device for guiding the hollow precast fly ash concrete pile of the present invention; Fig.12 It is a schematic diagram of the connection structure of the movable adjustment structure of the guide adjustment device for guiding the hollow precast fly ash concrete pile of the present invention; Fig.13 It is an exploded schematic diagram of the movable adjustment structure connection structure part of the guide adjustment device for guiding the fly ash concrete hollow precast pile according to the present invention; In the figure, 1-hollow pile body, 2-guide adjustment device, 11-small head, 12-steel ring, 21-guide positioning base, 22-protection tube, 31-movable guide lifting disc, 41-adjusting support base, 311-movable guide rod, 312-support connecting steel plate, 313-hydraulic adjustment rod, 314-movable guide adjustment roller, 315-movable adjustment rod, 316-movable support rod, 411-movable adjustment disc, 412-first movable rotating shaft, 413-second movable rotating shaft, 414-third movable rotating shaft, 4121-first adjustment Connecting platform, 4122-first adjusting movable arm, 4123-first large bevel gear, 4124-first driving bevel gear, 4125-first driving servo motor, 4131-second adjusting connecting platform, 4132-second adjusting movable arm, 4133-second large bevel gear, 4134-second driving bevel gear, 4135-second driving servo motor, 4141-third adjusting connecting platform, 4142-third adjusting movable arm, 4143-third large bevel gear, 4144-third driving bevel gear, 4145-third driving servo motor. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0021] like Figures 1 to 3 As shown, a fly ash concrete hollow prefabricated pile is made by a certain design mix ratio and materials, and its concrete mix ratio is: cement: 450 kg / m³; fly ash: 90 kg / m³; coarse aggregate: 1150 kg / m³; fine aggregate: 700 kg / m³; water: 180 kg / m³; and a number of admixtures. A concrete hollow pile body 1 is prefabricated by these materials according to the above mix ratio.

[0022] Mix design needs to consider: 1. Fly ash dosage: Generally, the recommended dosage is 15% to 30% of the cement weight; too high a dosage may affect the strength and early compressive strength of the concrete; 2. Water-binder ratio: Control the reasonable water-binder ratio, usually between 0.4 and 0.6, to ensure the strength and durability of concrete; 3. Use of admixtures: Add water reducing agent etc. appropriately according to construction requirements and weather conditions; 4. Trial mixing and adjustment: It is recommended to conduct trial mixing and strength testing to ensure that the mix ratio can meet the design strength and durability requirements.

[0023] In actual application, it is necessary to refer to the relevant construction environment, building codes and standards, and optimize the mix ratio according to specific circumstances.

[0024] In the embodiment, the outer wall diameter of one end of each hollow pile body 1 which is 20cm~25cm away from the pile head is smaller than the diameter of the hollow pile body, and the end of the hollow pile body 1 is prefabricated and connected with a small head 11, and the outer wall diameter of the other end of the hollow pile body 1 which is 20cm~25cm away from the pile head is also smaller than the diameter of the hollow pile body; in two adjacent hollow pile bodies 1 for connection, the small head 11 prefabricated and connected at the end of the upper hollow pile body 1 extends and is placed in the hollow cavity of the end of the lower hollow pile body 1 away from the small head 11; the outer walls of the two adjacent connected hollow pile bodies 1 with a diameter smaller than the diameter of the hollow pile body 1 are further reinforced and connected by welding with a steel ring 12; the hollow pile bodies 1 connected and reinforced in sequence pass through a guide adjustment device 2 for guiding, and enter the pile hole foundation of the construction layout under the action of a pile driver.

[0025] During construction, the hollow pile body 1 is transported to the construction site, and after the pile test is qualified according to the requirements, the guide adjustment device 2 is installed at the pile foundation point of the construction site, and then the guide adjustment device 2 is fixed by an anchor rod, and the small head 11 of the first hollow pile body 1 is passed through the guide adjustment device 2, and the hollow pile body 1 is driven into the foundation by a pile driver under the guidance of the guide adjustment device 2. If the hollow pile body 1 is found to be tilted or offset during the construction process, the guide adjustment device 2 can be used to correct the deviation in motion, so that the hollow pile body 1 can be corrected to meet the construction verticality requirements, thereby meeting the overall requirements of the pile foundation of the construction. When the depth of one of the hollow pile bodies 1 (the lower hollow pile body 1) is insufficient, a hollow pile body 1 is connected to the end of the hollow pile body 1. In the specific operation, the small head 11 prefabricated and connected at the end of the upper hollow pile body 1 is extended and placed in the hollow cavity of the end of the lower hollow pile body 1 away from the small head 11. Then, the outer walls of the two adjacent hollow pile bodies 1 with a diameter smaller than the diameter of the hollow pile body 1 are further reinforced by welding with a steel ring 12 to reinforce and stabilize the connection. Then, filling concrete (fast-setting concrete with a concrete strength higher than that of the prefabricated hollow pile body 1) is injected into the hollow between the steel ring 12 and the connection. Then, the pile driving construction is carried out by a pile driver. It should be noted that when construction is carried out in urban areas, in order to reduce noise pollution, the pile driver used is a "static pile driver"; in urban or mountainous areas, a suitable pile driver is selected according to the construction requirements.

[0026] Further, such as Figures 4 to 13As shown, the guiding and adjusting device 2 used in conjunction with the hollow pile body 1 prefabricated with fly ash concrete and used for guiding the hollow pile body 1 prefabricated with fly ash concrete comprises a guiding and positioning base 21 for being placed at the position of the foundation layout pile hole, the guiding and positioning base 21 is provided with a guiding and positioning hole for the hollow pile body 1, a movable mechanism for movably guiding the hollow pile body 1 is installed on the guiding and positioning base 21, and an adjusting mechanism for adjusting the hollow pile body 1 is installed above the movable mechanism; the movable mechanism is movably arranged in a protective tube 22 which is centrally arranged. In the embodiment, the small head 11 of the hollow pile body 1 and the first hollow pile body 1 is passed through the adjustment mechanism of the guide adjustment device 2, then through the movable mechanism, and then through the guide positioning hole through the guide positioning support 21, so that the small head 11 of the hollow pile body 1 contacts the construction foundation ground, and the small head 11 of the hollow pile body 1 is used as the first "guide drill bit" for construction; then the pile driver is started to drive the hollow pile body 1 into the construction foundation soil layer under the adjustment and guidance of the guide adjustment device 2. It should be noted here that the connection implementation method of the guide adjustment device 2 can also be: a movable mechanism for movable guiding of the hollow pile body 1 is installed on the guide positioning support 21, and the movable mechanism can be set on the guide positioning support 21 close to the construction soil body surface, that is, the bottom end surface of the guide positioning support 21, and the movable mechanism can be set on the fixed end surface of the guide positioning support 21. Since the setting structure is the same, only the specific connection method is slightly different, and the implementation effect is the same, in this application, only the following specific embodiments of this application are specifically described.

[0027] Further, in a specific embodiment, Figures 5 to 9 As shown, the movable mechanism includes a movable guide lifting disc 31 ; the movable guide lifting disc 31 is provided with a movable guide channel opening for the hollow pile body 1 to pass through and is coaxially arranged with the guide positioning hole of the guide positioning support 21 . Movable guide rods 311 are movably provided around the movable guide lifting disc 31, one end of the movable guide rod 311 is connected and fixed to the guide positioning base 21, and the other end of the movable guide rod 311 is used to be connected and fixed to the support and connection steel plate 312, the adjustment mechanism is used to be installed and connected to the support and connection steel plate 312, and the support and connection steel plate 312 is provided with a passage opening for the hollow pile body 1 to pass through, and the passage opening is coaxially arranged with the guide positioning hole of the guide positioning base 21; one end of the protective tube 22 is connected and fixed to the guide positioning base 21, and the other end of the protective tube 22 is connected and fixed to the support and connection steel plate 312; the structure connected to the movable guide lifting disc 31 can be movably arranged in the protective tube 22, and the protective tube 22 is used to prevent soil from entering the protective tube 22 during construction, thereby affecting the movable mechanism arranged therein.

[0028] Furthermore, a hydraulic adjustment rod 313 is provided between the supporting and connecting steel plate 312 and the movable guide lifting disc 31, and is used to drive the movable guide lifting disc 31 to move up and down along the movable guide rod 311. One end of the hydraulic adjustment rod 313 is connected to the supporting and connecting steel plate 312, and the other end of the hydraulic adjustment rod 313 is connected to the movable guide lifting disc 31; a movable limiting guide structure is movably provided between the movable guide lifting disc 31 and the guide positioning platform 21.

[0029] There are four movable limit guide structures in the arrangement, and they are evenly and movably arranged around the upper part of the guide positioning hole of the guide positioning support platform 21; the movable limit guide structures all include movable guide adjustment rollers 314, and the four movable guide adjustment rollers 314 are relatively movable and adjustable; the end of the movable guide adjustment roller 314 away from the guide positioning hole of the guide positioning support platform 21 is rotatably connected to the movable adjustment rod 315 through a rotating shaft, and the other end of the movable adjustment rod 315 is hinged to the bottom end surface of the movable guide lifting disc 31 through a hinge seat; the end of the movable adjustment rod 315 close to the guide positioning support platform 21 is provided with an inclined movable support rod 316; one end of the movable support rod 316 is hinged to the movable adjustment rod 315 through a hinge seat, and the other end of the movable support rod 316 is hinged to the guide positioning support platform 21 through a hinge seat.

[0030] In the embodiment, the hollow pile body 1 prefabricated with fly ash concrete passes through the adjustment mechanism, and then passes between the movable guide adjustment rollers 314 of the four movable limit guide structures of the movable mechanism, and then the guide lifting disc 31 is driven to move up and down along the movable guide rod 311 by adjusting the hydraulic adjustment rod 313; because the guide lifting disc 31 is protected by the protective cylinder 22, it moves up and down in the hollow cavity of the protective cylinder 22, thereby driving the movable adjustment rod 315 of the guide lifting disc 31 to move relatively under the hinged support of the movable support rod 316, so that the movable guide adjustment roller 314 rotatably connected to the other end of the movable adjustment rod 315 can be moved according to the requirements of the hollow pile body 1 prefabricated with fly ash concrete, and the hollow pile body 1 prefabricated with fly ash concrete can be smoothly entered into the foundation soil. Then, the guiding and stabilizing limit function is realized through the movable mechanism of this design.

[0031] Further, such as Figures 10 to 13As shown, the adjustment mechanism designed for fine-tuning the hollow pile body 1 prefabricated with fly ash concrete includes an adjustment support base 41, and the adjustment support base 41 is provided with a movable hole for the hollow pile body 1 to pass through, and the movable hole is coaxially arranged with the guide positioning hole of the guide positioning base 21; a movable adjustment disc 411 is arranged above the adjustment support base 41, and the movable adjustment disc 411 is arranged through the center, and the hollow cavity opened through the movable adjustment disc 411 is used for the hollow pile body 1 to pass through; a circle of rubber protection ring is detachably installed and connected around the hollow cavity opened through the movable adjustment disc 411; the outer wall of the hollow pile body 1 is protected around the circle of rubber protection ring to avoid rigid contact and friction damage.

[0032] At the same time, a movable guide shaft is coaxially arranged above the movable hole of the adjustable support base 41. The movable guide shaft is through-centered and coaxially arranged with the movable hole of the adjustable support base 41. The through-centered cavity of the movable guide shaft is used for the hollow pile body 1 to pass through, and the bottom end of the movable guide shaft is used to be connected and fixed with the adjustable support base 41; the adjustable support base 41 is connected and arranged with the movable adjustment disk 411 through a movable adjustment structure; the movable adjustment structure includes a first movable adjustment structure, a second movable adjustment structure and a third adjustment structure, and the first movable adjustment structure, the second movable adjustment structure and the third adjustment structure are movably connected and arranged with the movable guide shaft, and the first movable adjustment structure, the second movable adjustment structure and the third adjustment structure are movably connected and arranged with the movable adjustment disk 411, for adjusting the movement of the movable adjustment disk 411.

[0033] In the embodiment, the first movable adjustment structure of the arrangement includes a first movable rotating shaft 412; the first movable rotating shaft 412 is rotatably sleeved on the outer wall of the movable guide shaft through a bearing, and the outer wall of one end of the first movable rotating shaft 412 close to the movable adjustment disk 411 is connected with a first adjustment connecting platform 4121, and the first adjustment connecting platform 4121 is movably hinged with a first adjustment movable arm 4122 through a hinge seat, and the other end of the first adjustment movable arm 4122 is movably hinged to the side wall of the movable adjustment disk 411 through a hinge seat; the outer wall of the other end of the first movable rotating shaft 412 is connected with a first large bevel gear 4123, and the first large bevel gear 4123 is meshed with the first drive bevel gear 4124, and the first drive bevel gear 4124 is connected to the output end of the first drive servo motor 4125 through a rotating shaft, and the first drive servo motor 4125 is connected and fixed to the adjustment support base 41 through a motor mounting bracket.

[0034] At the same time, the second movable adjustment structure includes a second movable rotating shaft 413; the second movable rotating shaft 413 is rotatably sleeved on the outer wall of the first movable rotating shaft 412 through a bearing, and the outer wall of one end of the second movable rotating shaft 413 close to the movable adjusting disk 411 is connected with a second adjusting connecting platform 4131, and the second adjusting connecting platform 4131 is movably hinged with a second adjusting movable arm 4132 through a hinge seat, and the other end of the second adjusting movable arm 4132 is movably hinged to the side wall of the movable adjusting disk 411 through a hinge seat; the outer wall of the other end of the second movable rotating shaft 413 is connected with a second large bevel gear 4133, and the second large bevel gear 4133 is meshed with the second driving bevel gear 4134. The second driving bevel gear 4134 is connected to the output end of the second driving servo motor 4135 through a rotating shaft, and the second driving servo motor 4135 is connected and fixed to the adjustment support base 41 through a motor mounting bracket.

[0035] In addition, the third movable adjustment structure includes a third movable rotating shaft 414; the third movable rotating shaft 414 is rotatably sleeved on the outer wall of the second movable rotating shaft 413 through a bearing, and the outer wall of one end of the third movable rotating shaft 414 close to the movable adjusting disk 411 is connected with a third adjusting connecting platform 4141, and the third adjusting connecting platform 4141 is movably hinged with a third adjusting movable arm 4142 through a hinge seat, and the other end of the third adjusting movable arm 4142 is movably hinged to the side wall of the movable adjusting disk 411 through a hinge seat; the outer wall of the other end of the third movable rotating shaft 414 is connected with a third large bevel gear 4143, and the third large bevel gear 4143 is meshed with a third driving bevel gear 4144. The third driving bevel gear 4144 is connected to the output end of the third driving servo motor 4145 through a rotating shaft, and the third drive servo motor 4145 is connected and fixed to the adjustment support base 41 through a motor mounting bracket.

[0036] In the embodiment, a movable guide shaft is coaxially arranged above the movable hole of the adjustable support base 41, and its hollow cavity is coaxially arranged with the movable hole of the adjustable support base 41. The movable hole of the adjustable support base 41 is coaxially arranged with the movable guide channel opening of the movable guide lifting disc 31 and the guide positioning hole of the guide positioning base 21, so as to allow the hollow pile body 1 prefabricated with fly ash concrete to pass through. If during construction, the hollow pile body 1 prefabricated with fly ash concrete tilts (the vertical tilt exceeds the design allowable range), then at this time, "micro-correction during construction drilling" can be performed according to the adjustment mechanism of the setting, that is, during the construction dynamics, the hollow pile body 1 prefabricated with fly ash concrete is corrected to the right position (to meet the vertical tilt during construction). One of the specific adjustment implementation methods is as follows: If the hollow pile body 1 made of fly ash concrete is offset during drilling, that is, if one side is offset, the inclined side of the hollow pile body 1 made of fly ash concrete will abut against the side of the movable adjustment disc 411 of the adjustment mechanism and contact the rubber protection ring on the side of the movable adjustment disc 411, and the rubber protection ring plays a protective role. At this time, the first drive servo motor 4125, the second drive servo motor 4135, and the third drive servo motor 4145 are respectively started and adjusted through control; The first driving servo motor 4125 drives the first driving bevel gear 4124 to rotate, so that the first driving bevel gear 4124 drives the first large bevel gear 4123 meshing with the first driving bevel gear 4124 to rotate, thereby the first large bevel gear 4123 drives the first movable shaft 412 on the outer wall of the movable guide shaft that is rotatably connected to the first large bevel gear 4123 to rotate, so that the first adjusting connecting platform 4121 at the other end of the first movable shaft 412 rotates and moves, and the rotation of the first adjusting connecting platform 4121 drives the first adjusting movable arm 4122 that is movably hinged to the first adjusting connecting platform 4121 to move, so that the movable adjusting disc 411 movably hinged to the other end of the first adjusting movable arm 4122 is driven to move through the first adjusting movable arm 4122 (the angular direction of the movable adjusting disc 411 changes); At the same time, the second driving servo motor 4135 drives the second driving bevel gear 4134 to rotate, so that the second driving bevel gear 4134 drives the second large bevel gear 4133 meshing with the second driving bevel gear 4134 to rotate, thereby the second large bevel gear 4133 drives the second movable shaft 413 connected to the second large bevel gear 4133 on the outer wall of the first movable shaft 412 to rotate, so that the second adjusting connecting platform 4131 at the other end of the second movable shaft 413 rotates, and the rotation of the second adjusting connecting platform 4131 drives the second adjusting movable arm 4132 movably hinged to the second adjusting connecting platform 4131 to move, so that the movable adjusting disk 411 movably hinged to the other end of the second adjusting movable arm 4132 is driven to move through the second adjusting movable arm 4132 (the angular direction of the movable adjusting disk 411 changes); At the same time, the third driving servo motor 4145 drives the third driving bevel gear 4144 to rotate, so that the third driving bevel gear 4144 drives the third large bevel gear 4144 meshing with the third driving bevel gear 4144 to rotate, thereby the third large bevel gear 4144 drives the third movable shaft 414 connected to the third large bevel gear 4144 on the outer wall of the second movable shaft 413 to rotate, so that the third adjusting connecting platform 4141 at the other end of the third movable shaft 414 rotates, and the rotation of the third adjusting connecting platform 4141 drives the third adjusting movable arm 4142 movably hinged to the third adjusting connecting platform 4141 to move, so that the movable adjusting disc 411 movably hinged to the other end of the third adjusting movable arm 4142 is driven to move through the third adjusting movable arm 4142 (the angular direction of the movable adjusting disc 411 changes); According to the inclination direction of the hollow pile body 1 prefabricated with fly ash concrete, and by adjusting the first movable adjustment structure, the second movable adjustment structure and the third adjustment structure, the activity of the movable adjustment disc 411 is adjusted to control the activity of the movable adjustment disc 411, that is, it can be achieved that the movable adjustment disc 411 is adjusted according to the inclination direction of the hollow pile body 1 prefabricated with fly ash concrete, and the hollow cavity of the movable adjustment disc 411 is "tilted and rotated" toward the inclination side of the hollow pile body 1 prefabricated with fly ash concrete, so that the hollow pile body 1 prefabricated with fly ash concrete is adjusted to the side away from the inclination (micro-adjustment) through the movement of the movable adjustment disc 411, so as to finally achieve "micro-correction adjustment in motion", and the hollow pile body 1 prefabricated with fly ash concrete is adjusted to the right side, so that it meets the verticality requirement of construction.

[0037] Finally, the hollow prefabricated pile is made according to a certain designed mix ratio, and the prefabricated hollow pile body structure can not only utilize the waste fly ash, be green and environmentally friendly, save materials and resources, and respond to the national call for green buildings, but also the hollow pile body structure ensures the overall quality of the pile body and can realize the rapid installation and connection of two hollow pile body structures, thereby saving construction time; in addition, during construction, through the guide adjustment device used in conjunction with the hollow pile body, the connected hollow pile body can be guided when the pile driver is driving the connected hollow pile body and play the purpose of "correcting deviation in motion", thereby ensuring the quality of the constructed piles.

[0038] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the embodiments in the above description. Within the technical concept of the present invention, a variety of simple modifications can be made to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention.

Claims

1. A fly ash concrete hollow precast pile, characterized in that: It includes a hollow concrete pile body prefabricated according to the concrete mix ratio, and the concrete mix ratio is as follows: Cement: 450 kg / m³; Fly ash: 90 kg / m³; Coarse aggregate: 1150 kg / m³; Fine aggregate: 700 kg / m³; Water: 180 kg / m³; Certain admixtures; The diameter of the outer wall of one end of the hollow pile body 20cm~25cm away from the pile head is smaller than the diameter of the hollow pile body, and the end of the hollow pile body is prefabricated and connected with a small head, and the diameter of the outer wall of the other end of the hollow pile body 20cm~25cm away from the pile head is also smaller than the diameter of the hollow pile body; In two adjacent hollow piles for connection, the small head of the upper hollow pile end prefabricated for connection is extended and placed in the hollow cavity of the lower hollow pile end away from the small head; The outer walls of two adjacent hollow piles with a diameter smaller than that of the hollow piles are further reinforced and connected by welding steel rings; The hollow pile bodies which are connected and reinforced in sequence pass through the guide adjustment device for guiding, and enter into the pile hole foundation of the construction layout under the action of the pile driver.

2. The guiding and adjusting device for guiding the hollow precast fly ash concrete pile according to claim 1, characterized in that: It includes a guide and positioning pedestal for being placed at the position of the foundation setting-out pile hole, the guide and positioning pedestal is provided with a guide and positioning hole for the hollow pile body, a movable mechanism for movably guiding the hollow pile body is installed on the guide and positioning pedestal, and an adjustment mechanism for adjusting the hollow pile body is installed above the movable mechanism; The movable mechanism is movably arranged in a protective cylinder which is centrally arranged.

3. The guiding and adjusting device for guiding the hollow precast fly ash concrete pile according to claim 2, characterized in that: The movable mechanism comprises a movable guide lifting disc; The movable guide lifting disc is provided with a movable guide passage opening for the hollow pile body to pass through and arranged coaxially with the guide positioning hole of the guide positioning bearing platform; The movable guide lifting disc is movably provided with movable guide rods on the four sides, one end of the movable guide rod is connected and fixed to the guide positioning bearing platform, and the other end of the movable guide rod is used to be connected and fixed to the support connecting steel plate, the adjustment mechanism is used to be installed and connected to the support connecting steel plate, and the support connecting steel plate is provided with a passage opening for the hollow pile body to pass through, and the passage opening is coaxially arranged with the guide positioning hole of the guide positioning bearing platform; One end of the protection tube is connected and fixed to the guide positioning support platform, and the other end of the protection tube is connected and fixed to the supporting connection steel plate.

4. The guiding and adjusting device for guiding the hollow precast fly ash concrete pile according to claim 3, characterized in that: A hydraulic adjustment rod is provided between the supporting connection steel plate and the movable guide lifting disc to drive the movable guide lifting disc to move up and down along the movable guide rod, one end of the hydraulic adjustment rod is connected to the supporting connection steel plate, and the other end of the hydraulic adjustment rod is connected to the movable guide lifting disc; A movable limiting guide structure is movably arranged between the movable guide lifting disc and the guide positioning support platform.

5. The guiding and adjusting device for guiding the hollow precast fly ash concrete pile according to claim 4, characterized in that: There are four movable limit guide structures, which are evenly and movably arranged around the upper part of the guide positioning hole of the guide positioning support platform; The movable limit guide structure comprises movable guide adjustment rollers, and the four movable guide adjustment rollers are relatively movable and adjustable; One end of the movable guide adjustment roller away from the guide positioning hole of the guide positioning support is rotatably connected to the movable adjustment rod through a rotating shaft, and the other end of the movable adjustment rod is hinged to the bottom end surface of the movable guide lifting disc through a hinge seat; The movable adjustment rod is provided with an inclined movable support rod at one end close to the guide positioning support platform; One end of the movable support rod is hinged to the movable adjustment rod through a hinge seat, and the other end of the movable support rod is hinged to the guide positioning support platform through a hinge seat.

6. The guiding and adjusting device for guiding the hollow precast fly ash concrete pile according to claim 5, characterized in that: The adjustment mechanism comprises an adjustment support base, wherein the adjustment support base is provided with a movable hole for the hollow pile body to pass through, and the movable hole is coaxially arranged with the guide positioning hole of the guide positioning bearing platform; A movable adjusting disc is arranged above the adjusting support base, and the movable adjusting disc is arranged through the center, and a hollow cavity opened through the center of the movable adjusting disc is used for the hollow pile body to pass through; A rubber protection ring is detachably mounted and connected around the hollow cavity formed in the center of the movable adjusting disc.

7. The guiding and adjusting device for guiding the hollow precast fly ash concrete pile according to claim 6, characterized in that: A movable guide shaft is coaxially arranged above the movable hole of the adjustable support base, the movable guide shaft is through-centered and coaxially arranged with the movable hole of the adjustable support base, the through-centered cavity of the movable guide shaft is used for the hollow pile body to pass through, and the bottom end of the movable guide shaft is used to be connected and fixed with the adjustable support base; The adjustable support base and the movable adjustable disc are connected via a movable adjustable structure; The movable adjustment structure includes a first movable adjustment structure, a second movable adjustment structure and a third adjustment structure. The first movable adjustment structure, the second movable adjustment structure and the third adjustment structure are movably connected to the movable guide shaft. The first movable adjustment structure, the second movable adjustment structure and the third adjustment structure are movably connected to the movable adjustment disk for adjusting the movement of the movable adjustment disk.

8. The guiding and adjusting device for guiding the hollow precast fly ash concrete piles according to claim 7, characterized in that: The first movable adjustment structure includes a first movable rotating shaft; The first movable shaft is rotatably sleeved on the outer wall of the movable guide shaft through a bearing, the outer wall of one end of the first movable shaft close to the movable adjustment disk is connected to a first adjustment connection platform, the first adjustment connection platform is movably hinged to a first adjustment movable arm through a hinge seat, and the other end of the first adjustment movable arm is movably hinged to the side wall of the movable adjustment disk through a hinge seat; A first large bevel gear is connected to the outer wall of the other end of the first movable rotating shaft. The first large bevel gear is meshed with the first driving bevel gear. The first driving bevel gear is connected to the output end of the first driving servo motor through the rotating shaft. The first driving servo motor is connected and fixed to the adjustment support base through a motor mounting bracket.

9. The guiding and adjusting device for guiding the hollow precast fly ash concrete pile according to claim 8, characterized in that: The second movable adjustment structure includes a second movable rotating shaft; The second movable rotating shaft is rotatably sleeved on the outer wall of the first movable rotating shaft through a bearing, the outer wall of one end of the second movable rotating shaft close to the movable adjusting disc is connected with a second adjusting connecting platform, the second adjusting connecting platform is movably hinged with a second adjusting movable arm through a hinge seat, and the other end of the second adjusting movable arm is movably hinged to the side wall of the movable adjusting disc through a hinge seat; A second large bevel gear is connected to the outer wall of the other end of the second movable rotating shaft, and the second large bevel gear is meshed with the second driving bevel gear. The second driving bevel gear is connected to the output end of the second driving servo motor through the rotating shaft, and the second driving servo motor is connected and fixed to the adjustment support base through the motor mounting bracket.

10. The guiding and adjusting device for guiding the hollow precast fly ash concrete piles according to claim 9, characterized in that: The third movable adjustment structure includes a third movable rotating shaft; The third movable rotating shaft is rotatably sleeved on the outer wall of the second movable rotating shaft through a bearing, and the outer wall of one end of the third movable rotating shaft close to the movable adjusting disc is connected with a third adjusting connecting platform, and the third adjusting connecting platform is movably hinged with a third adjusting movable arm through a hinge seat, and the other end of the third adjusting movable arm is movably hinged to the side wall of the movable adjusting disc through a hinge seat; The outer wall of the other end of the third movable rotating shaft is connected to a third large bevel gear, and the third large bevel gear is meshed with the third driving bevel gear. The third driving bevel gear is connected to the output end of the third driving servo motor through a rotating shaft, and the third driving servo motor is connected and fixed to the adjustment support base through a motor mounting bracket.

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