Pile hole cleaning device and method for steel pipe column construction

Abstract

The invention provides a pile hole cleaning device and method for steel pipe column construction, relates to the pile hole cleaning technology, and particularly discloses a base, a mounting frame is mounted on the base, a mounting platform is slidably arranged on the mounting frame, and a lifting mechanism used for driving the mounting platform to move in the vertical direction is arranged on the mounting frame; a driven gear is mounted on the mounting platform, a rod body is arranged in the driven gear in a penetrating manner, and a rotating mechanism for driving the driven gear to rotate is mounted on the mounting platform; a mounting opening is formed in the outer side wall of the rod body, a plurality of first expansion blocks are arranged in the mounting opening in a surrounding manner, a second expansion block is arranged between any two adjacent first expansion blocks, and an expansion mechanism for driving the first expansion blocks and the second expansion blocks to expand in sequence is arranged in the rod body; the first expansion block and the second expansion block are each provided with a cleaning mechanism used for cleaning scum on the inner wall of the pile hole. The equipment can clean scum with different depths in a pile hole, and the integrity of the pile hole is protected through an annular air bag structure and a liquid conveying system.

Description

Technical Field

[0001] The invention relates to the technical field of pile hole cleaning, and in particular to a pile hole cleaning device and a cleaning method for steel pipe column construction. Background Art

[0002] Bored piles refer to pile foundation structures that are made by forming pile holes in the foundation soil through mechanical drilling, steel pipe squeezing or manual excavation at the construction site, placing steel cages in the holes, and pouring concrete. The bearing capacity of the pile foundation is particularly important for the quality of the drilling holes. At present, rotary drilling rigs are often used to drill holes of corresponding sizes on the ground. However, in the process of rotary drilling, the thick sediment at the bottom of the pile and the floating slag on the hole wall often affect the construction quality of the pile foundation; when the sediment is too thick, it will seriously restrict the bearing capacity of the pile end, which will cause huge adverse risks to the overall structural safety of the pile foundation superstructure.

[0003] Therefore, after the pile hole is opened, the sediment and scum of the pile hole need to be cleaned in time.

[0004] The invention patent with announcement number: CN115369877A discloses "construction method and construction device for cleaning sediment in pile foundation hole", and specifically discloses that the steel cage is installed in place in the pile foundation hole, clean water is injected into the water injection pipe, and the clean water with pressure is impacted and mixed with the slag in the pile foundation hole, the mud floats up and mixes with the water while the slag sinks, and the sewage pump pumps the sewage out through the drainage pipe. When the water discharged from the drainage pipe becomes clear, the injection of clean water is stopped, and the sewage pump completes the drainage of the water in the pile foundation hole. However, the above structure uses the injection of clean water into the pile foundation hole to clean the sediment. If the clean water is injected into the pile foundation hole, not only will the hole wall be too wet, but long-term accumulation of water may cause the hole wall to loosen and collapse, which will affect the construction safety and the quality of the lead-hole pile, and the large amount of clean water will also cause waste. Summary of the invention

[0005] The purpose of the present invention is to provide a pile hole cleaning device and a cleaning method for steel pipe column construction. In view of the shortcomings of the prior art, the device and a cleaning method can solve various safety problems caused to the inner wall of the pile foundation hole when using clean water or a large amount of mud to clean sediment and scum in the prior art.

[0006] The technical solution of the present invention is achieved in this way:

[0007] The invention provides a pile hole cleaning device for steel pipe column construction, comprising a base, a mounting frame is mounted on the base, a mounting platform is slidably mounted on the mounting frame, and a lifting mechanism for driving the mounting platform to move in a vertical direction is provided on the mounting frame;

[0008] A driven gear is installed on the installation platform, a rod body is inserted into the driven gear, and a rotating mechanism that drives the driven gear to rotate is installed on the installation platform;

[0009] An installation opening is provided on the outer wall of the rod body, and a plurality of first expansion blocks are arranged around the installation opening. A second expansion block is installed between any two adjacent first expansion blocks. An expansion mechanism for driving the first expansion block and the second expansion block to expand in sequence is provided in the rod body; and a cleaning mechanism for cleaning scum on the inner wall of the pile hole is provided on the first expansion block and the second expansion block.

[0010] In some technical solutions of the present invention, the lifting mechanism includes a first push rod installed on a base, an auxiliary wheel is installed on the telescopic end of the first push rod, a traction rope is installed on the base, a slide is slidably provided in the mounting frame, the slide is connected to the mounting platform, two limiting wheels are installed on the slide and are respectively abutted against the mounting frame, a part of the traction rope is wound around the auxiliary wheel, and the free end of the traction rope is connected to the slide.

[0011] In some technical solutions of the present invention, the rotating mechanism includes a driving motor installed on a mounting platform, a driving gear meshing with a driven gear is installed on the output end of the driving motor, a limiting block is installed on the inner wall of the driven gear, a limiting groove is opened on the outer wall of the rod body along its axial direction, and the limiting block is embedded in the limiting groove.

[0012] In some technical solutions of the present invention, the expansion mechanism includes a mounting seat installed in the rod body, and a plurality of first mounting grooves corresponding to the first expansion block are arranged around the outer wall of the mounting seat, and a first mounting rod is slidably arranged in each of the first mounting grooves, and two first connecting rods connected to the first expansion block are hinged on the first mounting rod;

[0013] A connecting seat is slidably provided in the rod body, and a first supporting rod is provided between the connecting seat and the first mounting rod;

[0014] A second mounting rod is slidably disposed between any two adjacent first mounting rods, and two second connecting rods connected to the second expansion block are hingedly connected to the second mounting rod;

[0015] A second rack is provided on the connecting seat, and a second support rod is provided between the second rack and the second mounting rod;

[0016] A first rack is installed on the connecting seat, a first motor is installed in the rod body, and a first gear meshing with the first rack is provided on the power transmission end of the first motor;

[0017] A second motor is installed in the rod body, and a second gear meshing with the second rack is provided on the power transmission end of the second motor.

[0018] In some technical solutions of the present invention, the cleaning mechanism includes a plurality of first airbags and a plurality of second airbags, the side walls of the first expansion block are provided with first grooves adapted to the first airbags, and the side walls of the second expansion block are provided with second grooves adapted to the second airbags; the first airbags are embedded in the first grooves; and the second airbags are embedded in the second grooves;

[0019] Both ends of the first airbag are equipped with protrusions, and both ends of the second airbag are provided with recessed grooves adapted to the protrusions, and magnetic poles magnetically connected to the protrusions are provided in the recessed grooves, and gas pipelines respectively connected to the first airbag and the second airbag are installed in the rod body;

[0020] The side walls of the first expansion block and the second expansion block are both provided with liquid inlet holes, and a liquid inlet pipe connected to the liquid inlet hole is installed in the rod body;

[0021] The side walls of the first expansion block and the second expansion block are both provided with liquid guiding channels; a liquid outlet pipe is installed in the rod body, and a connecting pipe is provided between the liquid guiding channel and the liquid outlet pipe.

[0022] In some technical solutions of the present invention, an adsorption mechanism for adsorbing sediment at the bottom of the pile hole is provided at the end of the rod body.

[0023] In some technical schemes of the present invention, the adsorption mechanism includes an adsorption ring rotatably arranged at the end of the rod body, a conduit is provided between the adsorption ring and the liquid outlet pipe, a mounting ring is provided on the liquid outlet pipe, a second push rod connected to the mounting ring is installed in the rod body, a push rod is slidably provided at the end of the liquid outlet pipe, the push rod is hinged to the adsorption ring, a positioning spring is provided between the mounting ring and the push rod, and a suction cup connected to the liquid outlet pipe is provided in the adsorption ring.

[0024] In some technical solutions of the present invention, third installation grooves are provided on the opposite side walls of the first expansion block and the second expansion block, a sealing block is slidably provided in any third installation groove, and a third airbag is provided between the sealing block and the third installation groove.

[0025] In some technical solutions of the present invention, a solenoid valve is installed at the connection point between the suction cup and the liquid outlet pipe.

[0026] Compared with the prior art, the present invention has at least the following advantages or beneficial effects:

[0027] The equipment can clean the scum at different depths in the pile hole, reducing manual operations and improving cleaning efficiency; the annular airbag structure and liquid delivery system avoid hard contact between the cleaning mechanism and the inner wall of the pile hole, reducing damage to the inner wall of the pile hole and protecting the integrity of the pile hole; the truncated cone-shaped plugging structure effectively prevents the cleaned scum from falling to the bottom of the pile hole, avoiding the need for secondary cleaning; the truncated cone-shaped plugging structure of the expansion mechanism can adapt to pile holes of different inner diameters, improving the applicability and flexibility of the equipment. By cleaning and protecting the inner wall of the pile hole, the construction quality of the pile foundation is improved, laying a good foundation for subsequent construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0029] Figure 2This is a diagram of the installation structure of the rod body and the first expansion block in the present invention.

[0030] Figure 3 It is a schematic diagram of the three-dimensional structure of the expansion mechanism in the present invention.

[0031] Figure 4 It is a schematic diagram of the half-section structure of the rod body in the present invention.

[0032] Figure 5 It is a partial cross-sectional view of the first expansion block and the second expansion block in the present invention.

[0033] Figure 6 It is a schematic diagram of the half-section structure of the adsorption structure in the present invention.

[0034] Figure numerals: 1, mounting frame; 101, mounting platform; 102, base; 103, driven wheel; 104, driving wheel; 105, first push rod; 106, traction rope; 107, auxiliary wheel; 108, limiting wheel; 109, slide; 201, driving gear; 2, driving motor; 202, driven gear; 203, rod body; 3, pile hole; 5, mounting seat; 501, first expansion block; 502, second expansion block; 503, liquid inlet hole; 504, first air bag; 505, liquid guide channel; 506, second connecting rod; 5 07. First connecting rod; 508. First mounting rod; 509. Second mounting rod; 510. First support rod; 511. Connecting seat; 512. First rack; 513. Second rack; 514. Second airbag; 515. Liquid inlet pipe; 516. Connecting pipe; 517. Second support rod; 6. Liquid outlet pipe; 7. Adsorption ring; 9. Protrusion; 10. Magnetic pole; 11. Third airbag; 12. Sealing block; 13. Push rod; 14. Second push rod; 15. Mounting ring; 16. Positioning spring; 17. Suction cup; 18. Catheter; 19. Solenoid valve. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0036] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] Example

[0038] The present invention provides a pile hole cleaning device for steel pipe column construction, such as Figure 1 , Figure 2 As shown, it includes a base 102, the middle part of which is a rectangular hollow area; a mounting frame 1 is fixedly installed on the base 102 by bolts, and the base 102 and the mounting frame 1 are perpendicular to each other. A mounting platform 101 is slidably provided on the mounting frame 1, and a lifting mechanism is provided on the mounting frame 1. The lifting mechanism is used to drive the mounting platform 101 to move in a vertical direction on the mounting frame 1, so as to clean the scum in different depth areas of the pile hole 3 and improve the cleaning efficiency; it also ensures that the rod body 203 moves along the axial direction of the pile hole 3 to avoid the rod body 203 from scratching the inner wall of the pile hole;

[0039] A driven gear 202 is rotatably mounted on the mounting platform 101 through a bearing, a rod body 203 is inserted into the driven gear 202, and a rotating mechanism is installed on the mounting platform 101; the rotating mechanism drives the driven gear 202 to rotate and drives the rod body 203 inserted into the driven gear 202 to make a circular motion in the pile hole 3;

[0040] An annular installation opening is provided on the outer wall of the rod body 203, and four first expansion blocks 501 are arranged around the installation opening, and the first expansion blocks 501 are fan-shaped blocks; a second expansion block 502 is installed between any two adjacent first expansion blocks 501, and the second expansion blocks 502 are fan-shaped blocks, and there are four of them. The four first expansion blocks 501 and the four second expansion blocks 502 are spliced ​​together to form a truncated cone-shaped blocking structure, and the small diameter end of the blocking structure is opposite to the installation platform 101, and the large diameter of the blocking structure faces the bottom of the pile hole 3. An expansion mechanism is provided in the rod body 203 to drive the first expansion block 501 and the second expansion block 502 to expand sequentially. The sequential expansion of the first expansion block 501 and the second expansion block 502 can avoid the first expansion block 501 and the second expansion block 502 from interfering with each other, which may cause the present structure to be unable to operate. A cleaning mechanism is provided on both the first expansion block 501 and the second expansion block 502. The cleaning mechanisms located on the first expansion block 501 and the second expansion block 502 can clean the scum attached to the inner wall of the pile hole 3 to ensure that the inner wall of the pile hole 3 is in an intact state.

[0041] In some technical solutions of the present invention, the lifting mechanism includes a first push rod 105 installed on the base 102, the first push rod 105 is installed on the base 102 in the vertical direction, and the first push rod 105 is parallel to the mounting frame 1, and the body of the first push rod 105 is fixed to the base 102 by bolts. An auxiliary wheel 107 is rotatably installed on the telescopic end of the first push rod 105 through a support, a traction rope 106 is fixedly installed on the base 102 by bolts, a slide 109 is slidably provided in the mounting frame 1, the slide 109 is fixedly connected to the mounting platform 101 by bolts, two limiting wheels 108 are installed on the slide 109, which are respectively abutted against the mounting frame 1, and the two limiting wheels 108 are respectively installed on the diagonal of the slide 109 through pins, and a part of the traction rope 106 is wound around the auxiliary wheel 107, and the free end of the traction rope 106 is connected to the slide 109.

[0042] Preferably, a driven wheel 103 and a driving wheel 104 are rotatably provided on the base 102 through a pin shaft, so that the structure can be easily operated for transportation within the construction site, thereby improving the construction progress.

[0043] The working principle of the lifting mechanism is as follows: when the telescopic end of the first push rod 105 gradually moves out of the main body of the first push rod 105, the portion where the traction rope 106 is connected to the slide 109 will gradually become shorter. At this time, the traction rope 106 will pull the slide 109 to move upward in the vertical direction in the mounting frame 1, and the cleaning mechanism installed on the rod body 203 will clean the scum attached to the inner wall of the pile hole 3 from bottom to top in sequence; the first expansion block 501 and the second expansion block 502 arranged in the rod body 203 will expand in sequence under the push of the expansion mechanism to form a truncated cone-shaped blocking structure, which can prevent the scum cleaned by the cleaning mechanism from falling to the bottom of the pile hole 3, avoid secondary cleaning, and improve the cleaning efficiency.

[0044] In some technical schemes of the present invention, the rotating mechanism includes a driving motor 2 installed on a mounting platform 101 by bolts, a driving gear 201 meshing with a driven gear 202 is installed on the output end of the driving motor 2, a limiting block is installed on the inner wall of the driven gear 202, a limiting groove is provided on the outer wall of the rod body 203 along its axial direction, the limiting block is embedded in the limiting groove, and the limiting block and the limiting groove are clearance-matched to prevent relative rotation between the two after the rod body 203 is installed in the driven gear 202.

[0045] Preferably, the rod body 203 is formed by splicing multiple hollow tubular structures, and any two adjacent tubular structures are threadedly connected.

[0046] When the driving motor 2 drives the rod body 203 to make a circular motion in the pile hole 3, the cleaning mechanism performs an upward motion in the vertical direction and a circumferential rotation motion around the rod body 203 under the joint action of the lifting mechanism and the rotating mechanism, which can avoid the outer surface of the cleaning mechanism from making hard contact with the inner wall of the pile hole 3, causing the inner wall of the pile hole 3 to be damaged and then collapse.

[0047] In some technical schemes of the present invention, the expansion mechanism includes a mounting seat 5 installed in the rod body 203 through a frame, the mounting seat 5 is a cylindrical structure, and four first mounting grooves corresponding to the first expansion block 501 are arranged around the outer wall of the mounting seat 5, the first mounting grooves are wedge-shaped grooves, and the first mounting rods 508 are slidably arranged in the first mounting grooves, and two first connecting rods 507 connected to the first expansion block 501 are hinged on the first mounting rod 508; the first connecting rod 507 is also hinged to the first expansion block 501.

[0048] A circular connecting seat 511 is slidably provided in the rod body 203, and a first support rod 510 is provided between the connecting seat 511 and the first mounting rod 508; the number of the first support rods 510 corresponds one-to-one to the number of the first mounting rods 508, and the first support rods 510, the connecting seat 511 and the first mounting rod 508 are welded together to form an integral body.

[0049] A second mounting rod 509 is slidably provided between any two adjacent first mounting rods 508, and a second mounting groove is provided between any two adjacent first mounting grooves. The second mounting groove is a wedge-shaped groove, and two second connecting rods 506 connected to the second expansion block 502 are hingedly connected to the second mounting rod 509; the second expansion block 502 is hingedly connected to the second connecting rod 506;

[0050] A second rack 513 is provided on the connecting seat 511 , and a second support rod 517 is provided between the second rack 513 and the second mounting rod 509 ; the second support rod 517 , the second rack 513 and the second mounting rod 509 are welded together to form an integral body.

[0051] A first rack 512 is installed on the connecting seat 511, and a first motor is installed in the rod body 203 through a clamping seat. The first motor is a small servo motor, and a first gear meshing with the first rack 512 is provided on the power transmission end of the first motor;

[0052] A second motor is installed in the rod body 203 via a socket, and a second gear meshing with the second rack 513 is provided on the power transmission end of the second motor.

[0053] The first motor drives the first rack 512 to reciprocate in the rod body 203, and the distance that the large diameter end of the first expansion block 501 extends out of the installation opening can be controlled. When the first expansion block 501 moves to a specified distance under the push of the first support rod 510; the second motor is started, and the second rack 513 pushes the second expansion block 502 to enter between any two adjacent first expansion blocks 501, until the two sides of the second expansion block 502 abut against the two first expansion blocks 501, and the second motor stops moving; the four first expansion blocks 501 and the four second expansion blocks 502 form a truncated cone-shaped blocking structure on the rod body 203;

[0054] Subsequently, the first motor and the second motor are started at the same time, and the first expansion block 501 and the second expansion block 502 continue to move radially along the rod body 203 under the joint promotion of the above structure; when the first mounting rod 508 pushes the first connecting rod 507 and the first expansion block 501 to be perpendicular to each other, the second mounting rod 509 pushes the first connecting rod 507 to be restricted by the first expansion block 501 and the first mounting rod 508 and cannot be deflected again; after the second connecting rod 506 and the second expansion block 502 are perpendicular to each other, the second connecting rod 506 is restricted by the second expansion block 502 and the second mounting rod 509 and cannot be deflected again, playing a role. For the purpose of self-locking, at this time, the outer diameter of the truncated cone-shaped blocking structure formed by the first expansion block 501 and the second expansion block 502 reaches the maximum; the blocking structure after the expansion can adapt to pile holes 3 with different inner diameters; on the contrary, under the common pullback of the first expansion block 501 and the second expansion block 502 in the above structure, the first connecting rod 507 is not restricted by the first expansion block 501 and the first mounting rod 508; the second connecting rod 506 is not restricted by the second expansion block 502 and the second mounting rod 509, and the above structure is unlocked, and then the first expansion block 501 or the second expansion block 502 is pulled back in sequence into the rod body 203.

[0055] In some technical solutions of the present invention, the cleaning mechanism includes a plurality of cylindrical first airbags 504 and a plurality of cylindrical second airbags 514, and the first airbags 504 and the second airbags 514 are both arc-shaped. The side walls of the first expansion block 501 are provided with first grooves adapted to the first airbags 504, and the side walls of the second expansion block 502 are provided with second grooves adapted to the second airbags 514; the first groove and the second groove are both groove structures with a "C"-shaped cross section, the first airbag 504 is embedded in the first groove, and a part of the first airbag 504 protrudes from the first groove; the second airbag 514 is embedded in the second groove, and a part of the second airbag 514 protrudes from the second groove;

[0056] Both ends of the first airbag 504 are provided with protrusions 9, which are solid structures with a circular cross section, and iron sheets magnetically connected to the magnetic poles 10 are built into the protrusions 9. Both ends of the second airbag 514 are provided with recesses adapted to the protrusions 9, and magnetic poles 10 magnetically connected to the protrusions 9 are arranged in the recesses, and gas pipelines respectively connected to the first airbag 504 and the second airbag 514 are installed in the rod body 203;

[0057] When the second airbag 514 and the first airbag 504 are respectively filled with gas, the two ends of the first airbag 504 extend along the extension direction of the first groove under the restriction of the first groove; the two ends of the second airbag 514 extend along the extension direction of the second groove under the restriction of the second groove; when the second airbag 514 and the first airbag 504 extend to a specific distance, the integrally formed protrusion 9 at the end of the first airbag 504 is embedded in the sink groove located at the end of the second airbag 514 to cover the gap between the two; and during the expansion of the second airbag 514 and the first airbag 504, the second airbag 514 and the first airbag 504 move along the radial direction of the rod body 203 to fill the gap between the sealing structure and the inner wall of the pile hole 3, thereby improving the sealing performance of the structure when cleaning the inner wall of the pile hole 3. When the driving motor 2 drives the rod body 203 to perform a circular motion in the pile hole 3, the cleaning mechanism performs an ascending motion in the vertical direction and a rotating motion around the rod body 203 under the joint action of the lifting mechanism and the rotating mechanism. The annular airbag structure composed of the four second airbags 514 and the four first airbags 504 forms an annular scraper, which can scrape the scum on the inner wall of the pile hole 3; and the set annular airbag structure also avoids the outer surface of the cleaning mechanism from hard contact with the inner wall of the pile hole 3, which causes the inner wall of the pile hole 3 to be damaged and cause collapse.

[0058] The side walls of the first expansion block 501 and the second expansion block 502 are both provided with liquid inlet holes 503, and a liquid inlet pipe 515 connected to the liquid inlet hole 503 is installed in the rod body 203; liquids such as soil slurry or clean water can be introduced into the pile hole 3 through the liquid inlet pipe 515 and the liquid inlet hole 503 by a delivery pump to clean the inner wall of the pile hole 3; when soil slurry is input, the scum on the inner wall of the pile hole 3 directly opened on the soil layer can be cleaned, and a layer of slurry can be attached to the inner wall of the pile hole 3 to protect the integrity of the inner wall of the pile hole 3; when clean water is input, the inner wall of the pile hole 3 opened on the stone layer can be cleaned to ensure that the inner wall of the pile hole 3 is in a relatively clean state, which is beneficial to the later construction.

[0059] The side walls of the first expansion block 501 and the second expansion block 502 are both provided with a liquid guide channel 505; a liquid outlet pipe 6 is installed in the rod body 203, and the liquid outlet pipe 6 is actually arranged in the second rack 513 and then extends outward, and a connecting pipe 516 is arranged between the liquid guide channel 505 and the liquid outlet pipe 6. The liquid guide channel 505 transports liquids such as soil slurry or clean water out of the pile hole 3 to prevent the liquids such as soil slurry or clean water from accumulating in the pile hole 3 and affecting the integrity of the pile hole 3 structure. The liquid outlet pipe 6 is connected to an external sewage extraction pump.

[0060] The liquid guiding channel 505 is located on the upper side of the annular airbag structure composed of four second airbags 514 and four first airbags 504. The second airbags 514 and the first airbags 504 are both separately connected to external air supply equipment.

[0061] Preferably, a valve body is provided between the liquid guiding channel 505 and the connecting pipe 516 , and the valve body is a solenoid valve.

[0062] Preferably, a valve body is also provided on the liquid inlet pipe 515, and the valve body is a solenoid valve.

[0063] In some technical solutions of the present invention, third installation grooves are provided on the opposite side walls of the first expansion block 501 and the second expansion block 502, a sealing block 12 is slidably provided in any third installation groove, and a third airbag 11 is provided between the sealing block 12 and the third installation groove.

[0064] The third airbag 11 is in the shape of a long strip. When the four first expansion blocks 501 and the four second expansion blocks 502 form a truncated cone-shaped sealing structure on the rod body 203, the third airbag 11 is connected to the external air supply equipment, and the third airbag 11 is inflated. The third airbag 11 expands, and the third airbag 11 pushes the sealing block 12 to be embedded in another third installation groove, which is used to seal the gap between the first expansion block 501 and the second expansion block 502 after they are spliced ​​together, thereby improving the sealing ability of the above structure.

[0065] Preferably, the third airbag 11, the second airbag 514 and the first airbag 504 share the same air supply device.

[0066] In some technical solutions of the present invention, an adsorption mechanism is provided at the end of the rod body 203 , and the adsorption mechanism is used to adsorb sediment at the bottom of the pile hole 3 .

[0067] In some technical solutions of the present invention, the adsorption mechanism includes an adsorption ring 7 rotatably arranged at the end of the rod body 203, the adsorption ring 7 is connected to the end of the rod body 203 through a spherical hinge, and an annular adsorption channel is provided at the end of the adsorption ring 7 away from the rod body 203. A guide tube 18 is provided between the adsorption ring 7 and the liquid outlet pipe 6, the liquid outlet pipe 6 is connected to the guide tube 18, and the guide tube 18 is connected to the adsorption channel. A mounting ring 15 is sleeved on the liquid outlet pipe 6, and a second push rod 14 connected to the mounting ring 15 is installed in the rod body 203. A push rod 13 is slidably provided at the end of the liquid outlet pipe 6, and the push rod 13 is hinged to the adsorption ring 7. A positioning spring 16 is provided between the mounting ring 15 and the push rod 13. A suction cup 17 connected to the liquid outlet pipe 6 is provided in the adsorption ring 7. The suction cup 17 is made of flexible rubber material. The outer edge of the large diameter end of the suction cup 17 is connected to the inner wall of the adsorption ring 7, and the small diameter end of the suction cup 17 is connected to the liquid outlet pipe 6.

[0068] In some technical solutions of the present invention, a solenoid valve 19 is installed at the connection point between the suction cup 17 and the liquid outlet pipe 6. The solenoid valve 19 is located above the connection point between the conduit 18 and the liquid outlet pipe 6.

[0069] The working principle of the adsorption structure is as follows: when the adsorption structure is working, the liquid inlet pipe 515 does not inject liquid into the liquid inlet hole 503, and the valve bodies at the liquid inlet pipe 515 and the connecting pipe 516 are in a closed state; the solenoid valve 19 is opened, and the negative pressure water pump connected to the liquid outlet pipe 6 is connected and starts working, and the sediment at the bottom of the pile hole 3 is discharged from the bottom of the pile hole 3 through the adsorption ring 7 and the suction cup 17, so as to avoid a lot of sediment at the bottom of the pile hole 3, which may cause the construction quality of the pile foundation to be unable to be guaranteed. The second push rod 14 is arranged to push the mounting ring 15 to make the push rod 13 move toward the tail end of the rod body 203. At this time, the adsorption ring 7 is pushed by the push rod 13 to make an outward deflection movement at the tail end of the rod body 203, thereby changing the adsorption area of ​​the adsorption ring 7 and cleaning the scum at the bottom of the pile hole 3 as much as possible. The adjustment spring 16 is placed between the mounting ring 15 and the push rod 13, so that the push rod 13 has a certain activity space under the drive of the above structure, avoiding the hard contact between the adsorption ring 7 and the inner wall of the pile hole 3, which causes damage to the integrity of the inner wall structure of the pile hole 3.

[0070] Pile hole 3 cleaning method for steel pipe column construction:

[0071] The method comprises the following steps: lowering the rod body 203 to a predetermined depth in the pile hole 3 by a lifting mechanism;

[0072] The adsorption mechanism is started to adsorb the sediment at the bottom of the pile hole 3, and when the sediment at the bottom of the pile hole 3 is completely adsorbed, the adsorption mechanism is closed;

[0073] The expansion mechanism is started, and the expansion mechanism controls the first expansion block 501 and the second expansion block 502 to expand in sequence to form a truncated cone-shaped blocking structure;

[0074] After being inflated, the first airbag 504 and the second airbag 514 in the cleaning mechanism extend radially and gradually contact the inner wall of the pile hole 3;

[0075] Soil slurry or liquid such as clean water is introduced into the pile hole 3 through the liquid inlet hole 503 and the liquid inlet pipe 515 to clean the inner wall of the pile hole 3; at the same time, the liquid is transported out of the pile hole 3 through the liquid guide channel 505 and the liquid outlet pipe 6, and the cycle is repeated;

[0076] The driving motor 2 drives the rod body 203 to make a circular motion in the pile hole 3, and the lifting mechanism gradually lifts the rod body 203 out of the pile hole 3, thereby completing the cleaning work of the pile hole 3.

[0077] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A pile hole cleaning device for steel pipe column construction, characterized in that: It comprises a base (102), a mounting frame (1) is mounted on the base (102), a mounting platform (101) is slidably mounted on the mounting frame (1), and a lifting mechanism for driving the mounting platform (101) to move in a vertical direction is provided on the mounting frame (1); A driven gear (202) is installed on the installation platform (101), a rod body (203) is inserted into the driven gear (202), and a rotating mechanism for driving the driven gear (202) to rotate is installed on the installation platform (101); An installation opening is provided on the outer wall of the rod body (203), a plurality of first expansion blocks (501) are arranged around the installation opening, a second expansion block (502) is installed between any two adjacent first expansion blocks (501), an expansion mechanism for driving the first expansion block (501) and the second expansion block (502) to expand in sequence is provided in the rod body (203); and a cleaning mechanism for cleaning scum on the inner wall of the pile hole is provided on the first expansion block (501) and the second expansion block (502).

2. A pile hole cleaning device for steel pipe column construction according to claim 1, characterized in that: The lifting mechanism comprises a first push rod (105) mounted on the base (102), an auxiliary wheel (107) being mounted on the telescopic end of the first push rod (105), a traction rope (106) being mounted on the base (102), a slide (109) being slidably arranged inside the mounting frame (1), the slide (109) being connected to the mounting platform (101), two limiting wheels (108) being mounted on the slide (109) and respectively abutting against the mounting frame (1), a part of the traction rope (106) being wound around the auxiliary wheel (107), and a free end of the traction rope (106) being connected to the slide (109).

3. A pile hole cleaning device for steel pipe column construction according to claim 1, characterized in that: The rotating mechanism comprises a driving motor (2) mounted on the mounting platform (101); a driving gear (201) meshing with the driven gear (202) is mounted on the output end of the driving motor (2); a limiting block is mounted on the inner wall of the driven gear (202); a limiting groove is provided on the outer wall of the rod body (203) along its axial direction; and the limiting block is embedded in the limiting groove.

4. A pile hole cleaning device for steel pipe column construction according to claim 1, characterized in that: The expansion mechanism comprises a mounting seat (5) mounted in the rod body (203), a plurality of first mounting grooves corresponding to the first expansion block (501) are arranged around the outer wall of the mounting seat (5), a first mounting rod (508) is slidably arranged in each of the first mounting grooves, and two first connecting rods (507) connected to the first expansion block (501) are hingedly connected to the first mounting rod (508); A connecting seat (511) is slidably provided in the rod body (203), and a first supporting rod (510) is provided between the connecting seat (511) and the first mounting rod (508); A second mounting rod (509) is slidably disposed between any two adjacent first mounting rods (508), and two second connecting rods (506) connected to the second expansion block (502) are hingedly connected to the second mounting rod (509); A second rack (513) is provided on the connecting seat (511), and a second support rod (517) is provided between the second rack (513) and the second mounting rod (509); A first rack (512) is installed on the connecting seat (511), a first motor is installed in the rod body (203), and a first gear meshing with the first rack (512) is provided on the power transmission end of the first motor; A second motor is installed in the rod body (203), and a second gear meshing with the second rack (513) is provided on the power transmission end of the second motor.

5. A pile hole cleaning device for steel pipe column construction according to claim 1 or 4, characterized in that: The cleaning mechanism comprises a plurality of first airbags (504) and a plurality of second airbags (514); a first groove adapted to the first airbag (504) is provided on the side wall of the first expansion block (501); a second groove adapted to the second airbag (514) is provided on the side wall of the second expansion block (502); the first airbag (504) is embedded in the first groove; the second airbag (514) is embedded in the second groove; Both ends of the first airbag (504) are provided with protrusions (9), both ends of the second airbag (514) are provided with recessed grooves adapted to the protrusions (9), the recessed grooves are provided with magnetic poles (10) magnetically connected to the protrusions (9), and the rod body (203) is provided with air delivery pipelines respectively connected to the first airbag (504) and the second airbag (514); The side walls of the first expansion block (501) and the second expansion block (502) are both provided with liquid inlet holes (503), and a liquid inlet pipe (515) connected to the liquid inlet hole (503) is installed in the rod body (203); The side walls of the first expansion block (501) and the second expansion block (502) are both provided with a liquid conducting channel (505); a liquid outlet pipe (6) is installed in the rod body (203), and a connecting pipe (516) is provided between the liquid conducting channel (505) and the liquid outlet pipe (6).

6. A pile hole cleaning device for steel pipe column construction according to claim 5, characterized in that: The end of the rod body (203) is provided with an adsorption mechanism for adsorbing sediment at the bottom of the pile hole (3).

7. A pile hole cleaning device for steel pipe column construction according to claim 6, characterized in that: The adsorption mechanism comprises an adsorption ring (7) rotatably arranged at the end of the rod body (203), a guide tube (18) is arranged between the adsorption ring (7) and the liquid outlet pipe (6), a mounting ring (15) is sleeved on the liquid outlet pipe (6), a second push rod connected to the mounting ring (15) is installed in the rod body (203), a push rod (13) is slidably arranged at the end of the liquid outlet pipe (6), the push rod (13) is hinged to the adsorption ring (7), a positioning spring (16) is arranged between the mounting ring (15) and the push rod (13), and a suction cup (17) connected to the liquid outlet pipe (6) is arranged in the adsorption ring (7).

8. The pile hole cleaning device for steel pipe column construction according to claim 5, characterized in that: A third installation groove is provided on the side walls opposite to the first expansion block (501) and the second expansion block (502), a sealing block (12) is slidably provided in any one of the third installation grooves, and a third air bag (11) is provided between the sealing block (12) and the third installation groove.

9. A pile hole cleaning device for steel pipe column construction according to claim 7, characterized in that: A solenoid valve (19) is installed at the connection point between the suction cup (17) and the liquid outlet pipe (6).

10. A pile hole cleaning method, characterized in that: The pile hole cleaning device for steel pipe column construction according to any one of claims 1 to 9 is provided, and the cleaning steps are as follows: The method comprises the following steps: lowering the rod body (203) to a predetermined depth in the pile hole (3) by means of a lifting mechanism; The adsorption mechanism is started to adsorb the sediment at the bottom of the pile hole (3), and when the sediment at the bottom of the pile hole (3) is completely adsorbed, the adsorption mechanism is closed; The expansion mechanism is activated, and the expansion mechanism controls the first expansion block (501) and the second expansion block (502) to expand in sequence to form a truncated cone-shaped blocking structure; After being inflated, the first airbag (504) and the second airbag (514) in the cleaning mechanism extend radially and gradually contact the inner wall of the pile hole (3); Liquid such as soil slurry or clean water is introduced into the pile hole (3) through the liquid inlet hole (503) and the liquid inlet pipe (515) to clean the inner wall of the pile hole (3); at the same time, the liquid is transported out of the pile hole (3) through the liquid guide channel (505) and the liquid outlet pipe (6), and the cycle is repeated; The driving motor drives the rod body (203) to perform circular motion in the pile hole (3), and the lifting mechanism gradually lifts the rod body (203) out of the pile hole (3), thereby completing the cleaning work of the pile hole (3).

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