River pile driver and construction method thereof

Abstract

The invention discloses a river pile driver and a construction method thereof. The river pile driver is mainly used for river zone geological hole pile foundation construction. The construction method mainly comprises the steps that a drill bit is continuously pushed downwards through a pushing beam of the drilling mechanism, meanwhile, the drill bit is driven by a rotary head to continuously rotate, soil is cut through a scraper blade to be smashed to achieve drilling work, and large slag stones are squeezed to a guiding piece to be brought into a slag collecting barrel; and fine slag stones are blown to the guide piece through compressed air and brought into the slag collecting barrel, after the capacity of the slag collecting barrel reaches the maximum value, the slag stones in the slag collecting barrel are poured out, then work continues, and after hole forming is finished, hole pile foundation construction is completed by placing the precast pile. In this way, it can be guaranteed that most of slag stone can be removed in the drilling process, the construction efficiency is prevented from being affected, meanwhile, the precast pile is inserted, and it can be guaranteed that the situation that a pile foundation cannot be formed due to cast-in-place pile foundation cannot occur.

Description

Technical Field

[0001] The present invention relates to the technical field of bored pile foundation construction, in particular to a Heze pile driver and a construction method thereof. Background Art

[0002] With the vigorous development of the national power grid, transmission lines are continuously extending to wider areas, and the pace of bored pile foundation construction is also accelerating. Against this backdrop, transmission line construction in various regions has ushered in new development opportunities, but it has also put forward extremely stringent requirements on the quality and efficiency of pile foundation construction.

[0003] Traditional drilling techniques primarily rely on manual drilling or mechanical rock breaking for rock of varying hardness. However, both methods present significant drawbacks, with the removal of slag being particularly challenging. Cleaning both the slag produced by manual drilling and the mixed debris and soil from mechanical rock breaking is extremely inconvenient, time-consuming, and labor-intensive, requiring significant investment in both manpower and material resources. This results in high construction costs and severely impacts progress.

[0004] Take the Heze area, for example. This area is mostly the Yellow River alluvial plain, with strata primarily dating back to the Quaternary Period of the Cenozoic Era, and a mixture of soft and medium-hard rock. These unique geological conditions create a diversity of drilling methods, and the resulting slag also presents a variety of forms. The complex forms of the slag undoubtedly create numerous inconveniences in cleaning, further highlighting the limitations of traditional drilling techniques in such geological conditions. More efficient and scientific construction techniques and slag removal solutions are urgently needed to address this predicament. Summary of the Invention

[0005] The purpose of the present invention is to provide a river and marsh pile driver and a construction method thereof to solve the problems of pile driving construction and slag cleaning in river and marsh areas.

[0006] The present invention is achieved through the following technical solutions: The pile driving equipment of the Heze pile driver is used for drilling pile foundations in river and marsh areas. The Heze pile driver includes a fuselage, a mechanical arm, and a drilling mechanism. A bracket is provided on the fuselage for placing prefabricated piles. The front end of the fuselage is rotatably connected to the mechanical arm. The mechanical arm can be rotated left and right on the fuselage by a hydraulic motor. The other end of the mechanical arm is rotatably connected to the drilling mechanism, so that the drilling mechanism can rotate around the connection point of the mechanical arm in a specific plane. The movement of each component of the mechanical arm can drive the movement of the drilling mechanism in all directions. The drilling mechanism includes a propulsion beam, a slewing head, a rod unloading assembly and a drilling The head, the swivel head can rotate continuously, the swivel head is fixedly connected to the propulsion beam, the propulsion beam is slidably connected to the drilling mechanism, and is connected to the chain. The chain is driven by a hydraulic motor to move the propulsion beam, which can drive the swivel head to move up and down. A drill bit is arranged under the swivel head, and they are connected by a drill rod. They are disassembled and assembled by a rod unloading assembly. A slot is arranged at one end of the swivel head and the drill bit, and slots are arranged at both ends of the drill rod. The external threaded part of the drill rod is an external threaded end, and the internal threaded part of the drill rod is an internal threaded end. The rod unloading assembly is located at the lower part of the propulsion beam and is fixed. The drilling mechanism is composed of a fixing seat, an upper caliper and a lower caliper. The slot position of the part to be removed or installed is placed on the lower caliper of the unloading rod assembly, and the slot position of the fixed part is placed on the upper caliper of the unloading rod assembly. The upper caliper is fixed on the fixing seat, and the lower caliper is rotatably connected to the fixing seat. One end of the lower caliper is connected to the hydraulic cylinder, and the other end of the hydraulic cylinder is fixed to the fixing seat. The hydraulic cylinder is extended to drive the lower caliper to rotate clockwise around the upper caliper, thereby driving the part to rotate clockwise to achieve the installation of the part. Conversely, the hydraulic cylinder is retracted to drive the The lower caliper rotates counterclockwise around the upper caliper, thereby driving the parts to rotate counterclockwise to achieve the removal of the parts. After installation is completed, the propulsion beam can push the turret to move, thereby driving the drill bit to move up and down. At the same time, the turret rotates clockwise, and the drill bit can be driven to rotate continuously by the rotation of the turret. A manipulator is set next to the drill rod, and the manipulator clamps the spare drill rod. The spare drill rod is of the same model as the drill rod. The drill rod and the spare drill rod are 7.5m long. When the drilling depth is less than or equal to 7.5m, there is no need to add the spare drill rod. When the drilling depth is greater than 7.When the drilling rod reaches 5m, a spare drill rod is added between the rotary head and the drill rod. The spare drill rod is gripped and moved to the designated position by the manipulator and installed using the rod unloading assembly in the same manner. The impactor is placed on the drilling mechanism. A hydraulic mechanical claw is provided below the rotary head to grip and move the precast pile. The hydraulic mechanical claw grips the precast pile on the machine body. During the drilling process, the hydraulic mechanical claw does not grip the precast pile. After drilling is completed, the drilling mechanism is moved to the machine body by the manipulator, and the precast pile is gripped by the hydraulic mechanical claw. The near-ground end of the precast pile is moved to the hole mouth by the manipulator. The downward impact force of the impactor moves the precast pile into the hole until the near-ground end of the precast pile is in contact with the hole bottom.

[0007] The Heze pile driver drills a hole through the drill bit, and the drill bit continuously rotates and drills the hole under the drive of the rotary head. At the same time, the pushing end of the drilling mechanism pushes the rotary head to make the drill bit continuously drill downward. The drill bit includes a slag collecting bucket, and a guide piece is provided on the outer wall of the slag collecting bucket. During the drilling process of the drill bit, the slag collecting bucket can be driven to rotate, thereby driving the guide piece to rotate, and then prompting the slag stuck between the slag collecting bucket and the hole wall to move along the slag inlet end of the slag collecting bucket on the guide piece, and finally enter the slag collecting bucket. The slag collecting bucket is cylindrical and hollow, used for collecting slag and stone, and two supporting members are arranged inside. The supporting members are disc-shaped, connected to the drill bit in the middle, and are evenly arranged up and down. There is a certain distance between the supporting members, which can be used to support and fix the slag collecting bucket to prevent the slag collecting bucket from deforming during the drilling process. The supporting member at the upper end is the slag feeding end, and the supporting member is provided with a plurality of holes. The slag and stone produced by drilling can enter the slag collecting bucket through the holes of the supporting member. A scraper is provided at the lower end of the drill bit, and the scraper is serrated, which can continuously cut the slag and stone produced by drilling at the bottom of the hole while the drill bit rotates, so that it can be The slag is crushed and collected conveniently. As the drill bit moves downward, the slag begins to move upward from the gap in the bottom plate of the drill bit due to the downward squeezing force of the drill hole. A circle of guide pieces is arranged on the periphery of the slag collecting bucket. The guide is a spiral blade. The guide pieces are arranged on the side wall of the slag collecting bucket in a spiral upward manner, and the projected area of ​​the guide pieces on the bottom surface is slightly smaller than the projected area of ​​the drill bit. The guide pieces are arranged clockwise, and the rotary head rotates clockwise. The slag collecting bucket rotates with the rotation of the rotary head, and the slag moves onto the guide pieces, and the slag is driven by the clockwise rotation of the slag collecting bucket. The stone moves upward, and the slag stone is transferred to the slag inlet end of the slag collecting bucket, so that the slag stone is discharged. At the same time, the guide piece is added to the periphery of the slag collecting bucket to play a fixing role. During the drilling process, the guide piece is pressed against the four sides of the hole wall, which can ensure the stability of the drill bit during the drilling process and avoid the drill bit shaking during the drilling process, which affects the drilling quality. The rotation of the rotary head can drive the guide piece to guide the slag stone stuck between the slag collecting bucket and the hole wall to the slag inlet end of the slag collecting bucket and concentrate it in the slag collecting bucket. The rotary head, the drill rod, the spare drill rod and the drill bit are hollow in design, forming a high The compressed air passage, the rotary head, the drill rod, the spare drill rod and the drill bit can communicate with each other after the connection is completed. The rotary head is provided with an air inlet end, the air inlet end is used to connect high-pressure gas externally, and the high-pressure gas enters the high-pressure air passage from the air inlet end through the air compressor. The high-pressure air passage includes a first air passage, a second air passage and a third air passage. The first air passage is provided in the middle position of the rotary head, the second air passage is provided in the middle position of the drill rod and the spare drill rod, and the third air passage is provided in the middle position of the drill bit. After any components are connected, compressed air is blown into the drill bit through the middle position.The interior of the drill end of the drill bit is trumpet-shaped, and compressed air is blown out to the surroundings through the drill end of the drill bit, blowing the fine debris at the bottom of the hole onto the guide piece. Similarly, the fine debris is transferred to the slag inlet end of the slag collecting bucket through the guide piece, and the fine debris in the hole is discharged. At the same time, the debris can be stored through the slag collecting bucket. The unloading assembly is a flip cover with two pieces, which are fixed by bolts. When the internal capacity of the slag collecting bucket reaches the slag inlet end, the drill bit is extended from the bottom of the hole, and the debris can be discharged by lifting the flip cover. Since the flip cover itself has a certain weight, a support rod is provided between the drill bit and the flip cover. When unloading debris, the support rod can be placed on the connection point between the drill bit and the flip cover for support. This eliminates the need to manually lift the flip cover for a long time, thereby facilitating the unloading of debris.

[0008] The construction method includes drilling preparation, drill bit positioning, drill bit advancement, air blowing, slag removal, adding drill rods, installing precast piles, and finishing drilling. The steps are as follows: 1. The drilling preparation: determine the position of the pile foundation through the positioning device and mark the drilling position with lime powder. The construction personnel move the Heze pile driver to the designated position through remote control and fix the fuselage through its fixing device. The drilling mechanism is moved out of the fuselage through the mechanical arm. The slot of the slewing head is moved to the upper caliper position of the unloading rod assembly through the propulsion beam. Grease is applied to the threaded end for lubrication. The construction personnel move the slot of the external thread end of the drill rod to the lower caliper position of the unloading rod assembly. Grease is also applied to the threaded end. By adjusting The interface between the drill rod and the swivel head is aligned, the hydraulic cylinder of the rod unloading assembly is extended to drive the drill rod to rotate clockwise, the swivel head is connected and fixed to the drill rod, the slot of the internal threaded end of the drill rod is moved to the upper caliper position of the rod unloading assembly through the propulsion beam, and the drill bit is installed on the drill rod in the same way. After the installation is completed, the swivel head and the drill bit are measured with a level, and the height difference between the two points is calculated. By fine-tuning the position, the connection level is ensured. Since the swivel head and the drill bit are installed horizontally, the connections of all components are horizontal.

[0009] 2. Positioning the drill bit: Move the drilling mechanism to 20 cm above the drilling position through the robotic arm, then control the propulsion beam of the drilling mechanism to push the drill bit downward to 5 cm above the drilling position, adjust the robotic arm again so that the center position of the drill bit corresponds to the marked drilling position, control the drilling mechanism to move the drill bit to the top, adjust the robotic arm to move the drilling mechanism downward until the legs of the drilling mechanism are in contact with the ground, measure the verticality of the drilling mechanism and the ground with a verticality measuring instrument, ensure that the drilling mechanism stands upright on the ground through fine-tuning, move the drill bit downward to the drilling position by the propulsion beam of the drilling mechanism, the impact surface of the drill bit is in contact with the ground, and start the rotary head.

[0010] 3. The propulsion drill bit: During the drilling process, the propulsion beam of the drilling mechanism controls the rotary head to propel downward, and the rotary head continuously drives the drill bit to propel downward. At the same time, the rotary head continuously drives the drill bit to rotate, and the slag generated by the drilling continuously moves upward from the gap at the bottom of the drill bit due to its downward extrusion force. When it moves to the guide piece on the periphery of the slag collecting bucket, since the slag collecting bucket rotates with the rotation of the rotary head, the slag moves upward with the rotation of the guide piece around the drill bit and is brought into the slag collecting bucket.

[0011] 4. The air blowing: when the propulsion beam of the drilling mechanism advances downward by 1.5m, that is, when the drill bit moves downward by 1.5m, the propulsion beam stops working, and the air compressor is started. Compressed air is continuously blown into the air inlet end of the rotary head through the air compressor, and the high-pressure air is transmitted to the drill bit through the intermediate high-pressure air duct. The compressed air blown out from the end of the drill bit blows out the fine slag upward. When the fine slag moves upward to the guide piece of the slag collecting bucket, the drill bit rotates clockwise driven by the rotary head, thereby bringing the fine slag into the slag collecting bucket. After working continuously for 30s, the air compressor stops working, and the propulsion beam continues to drive the rotary head to move downward, thereby driving the drill bit to move downward.

[0012] 5. Deslagging: There are two upper and lower support members in the slag collecting bucket. When the accumulation height of the slag in the slag collecting bucket reaches the support member above the slag collecting bucket, the rotary head stops rotating, the pushing beam of the drilling mechanism is operated to push the drill bit out of the hole, and then the mechanical arm is operated to move the drilling mechanism aside, and the drill bit is moved downward by the pushing beam of the drilling mechanism until the scraper of the drill bit touches the ground. The bolts of the flip cover are removed by tools, and the handle of the flip cover on one side is grasped and pulled out to fix it through the support rod. The flip cover on the other side is opened in the same way. When all the slag in the slag collecting bucket is discharged, the flip cover is closed. Then fix it with bolts, move the drill bit upward 20 cm through the propulsion beam of the drilling mechanism, and then move the drilling mechanism to the hole position through the robotic arm. After moving to the approximate position, move the drill bit downward through the propulsion beam of the drilling mechanism, and perform fine-tuning according to the position of the drill bit through the robotic arm until the drill bit is completely placed in the hole and the guide piece of the drill bit does not get stuck around the hole wall. Measure the verticality of the drilling mechanism and the ground with a verticality measuring instrument, ensure that the drilling mechanism stands upright on the ground through fine-tuning, start the rotary head and continuously propel the drill bit to continue drilling. This operation needs to be repeated in subsequent drilling work until the drilling is completed.

[0013] 6. Adding drill rod: When the drilling depth is greater than 7.5m, the pushing beam of the drilling mechanism pushes the drill rod to the end of the drill rod, the swivel head stops working, and the slot of the swivel head is adjusted to the upper clamp position of the rod unloading assembly by the pushing beam, and the slot is fixed to the upper clamp position, and the slot of the external thread position of the drill rod is adjusted to the lower clamp position of the rod unloading assembly, and the hydraulic cylinder of the rod unloading assembly is retracted to drive the drill rod to rotate counterclockwise, so that the swivel head and the rod unloading assembly are aligned. The drill rod is removed. After the removal is completed, the propulsion beam is moved to move the rotary head upward by 8m. The slot at the internal thread position of the spare drill rod is placed on the upper clamp position of the unloading rod assembly by the manipulator. Grease is applied to the internal thread position of the spare drill rod and the external thread position of the drill rod respectively, and their interfaces are aligned. The hydraulic cylinder of the unloading rod assembly is extended to drive the drill rod to rotate clockwise to connect the spare drill rod to the drill rod. After the connection is completed, the drilling mechanism is moved by the manipulator to make the drilling machine The rod unloading assembly on the mechanism moves upward so that the lower clamp of the rod unloading assembly is aligned with the slot of the spare drill rod. The propulsion beam moves the swivel head downward so that the slot of the swivel head is aligned with the upper clamp of the rod unloading assembly. Grease is applied to the threaded ends of each of the rod unloading assembly to align their interfaces. The hydraulic cylinder of the rod unloading assembly is extended to drive the spare drill rod to rotate clockwise to connect the swivel head to the spare drill rod. After installation, the swivel head and the spare drill rod are measured using a level to calculate the height difference between the two points. The position is fine-tuned to ensure that the connection is level. Since the swivel head and the spare drill rod are installed horizontally, the connections of all components are level. The mechanical arm is adjusted to place the drilling mechanism vertically. The verticality of the drilling mechanism to the ground is measured using a verticality measuring instrument. The drilling mechanism is placed vertically through fine-tuning. After the position is confirmed, the propulsion beam of the drilling mechanism is adjusted to make the impact surface of the drill bit contact the ground. The swivel head is started and the drilling mechanism continues to advance downward.

[0014] 7. Installation of precast piles: After drilling is completed, the rotary head stops working, the propulsion beam is moved upward, driving the rotary head upward, thereby removing the drill bit from the hole. The drilling mechanism is moved to the machine body by the robotic arm. The precast pile on the machine body is clamped by the hydraulic mechanical claw on the drilling mechanism. The drilling mechanism is moved by the robotic arm to move the near-ground end of the precast pile to the hole mouth. The near-ground end of the precast pile is the end that contacts the bottom surface of the hole. The verticality of the precast pile to the ground is measured by a verticality measuring instrument to ensure that the precast pile is placed perpendicular to the ground. Since the diameter of the drill hole is slightly larger than the diameter of the precast pile, the drilling mechanism is driven by the robotic arm to advance the precast pile downward by 1 meter. The hydraulic mechanical claw is released, allowing the precast pile to slide on the hydraulic mechanical claw without tilting. The impactor continuously provides downward impact force to the precast pile, causing it to continue to advance downward until the near-ground end of the precast pile completely contacts the bottom surface of the hole.

[0015] 8. Finish drilling: After the prefabricated pile is installed, the slewing head is moved downward by moving the advancing beam, driving the drill bit to move, so that the groove of the drill bit is aligned with the lower caliper of the unloading rod assembly, and the groove at the internal thread position of the drill rod is aligned with the upper caliper of the unloading rod assembly, the hydraulic cylinder of the unloading rod assembly is retracted to drive the drill bit to rotate counterclockwise, so that the drill bit and the drill rod are removed, and the advancing beam is moved downward again, so that the groove at the external thread position of the drill rod is aligned with the lower caliper of the unloading rod assembly, and the groove at the internal thread position of the spare drill rod is aligned with the upper caliper of the unloading rod assembly, and the spare drill rod is removed from the drill rod and the drill rod is removed from the slewing head by the same method, and the drilling mechanism is retracted onto the Heze pile driver by the robotic arm, the fixing device on the fuselage is released and the Heze pile driver is removed by remote control, and the work is completed.

[0016] In summary, the present invention has the following beneficial effects: 1. The slag generated during the drilling process can be collected by the slag collecting bucket of the drill bit, and at the same time, the slag is brought into the slag collecting bucket through its guide piece, which improves its working efficiency. No additional dust collection tools are required for slag cleaning, which can reduce working costs. The high-pressure gas blowing treatment can discharge smaller slag from the hole, thereby improving its drilling efficiency.

[0017] 2. The guide piece on the outer periphery of the slag collecting bucket can press against the hole wall during the construction process, thereby improving the stability of the drill bit and keeping the drill bit perpendicular to the ground, thus avoiding the hole body from tilting during drilling and affecting the drilling efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the drilling mechanism of the present invention; Figure 3 This is a diagram of the high-pressure airway arrangement of the present invention; Figure 4 This is a structural schematic diagram of the drill bit of the present invention when it is closed; Figure 5 This is a structural schematic diagram of the drill bit of the present invention when it is opened; Figure 6 This is a schematic diagram of the hydraulic mechanical claw structure of the present invention; Figure 7 is a cross-sectional view of the drill bit of the present invention; Figure 8 It is a schematic diagram of the turret structure of the present invention; Figure 9 This is a schematic structural diagram of the unloading rod assembly of the present invention; Figure 10 A cross-sectional view of a drill rod according to the present invention; Figure 11 It is a schematic diagram of the scraper structure of the present invention; Figure 12 Schematic diagram of the support structure of the present invention.

[0020] Explanation of the accompanying symbols: 1. Body; 2. Robotic arm; 3. Drilling mechanism; 301. Robotic arm; 302. Hydraulic mechanical claw; 4. Propulsion beam; 5. Rotating head; 501. Air inlet end; 6. Rod unloading assembly; 601. Upper caliper; 602. Fixed seat; 603. Lower caliper; 604. Hydraulic cylinder; 7. High-pressure air duct; 701. First air duct; 702. Second air duct; 703. Third air duct; 8. Drill bit; 801. Slag collecting bucket; 802. Guide plate; 803. Flip cover; 804. Drill bit end; 805. Scraper; 806. Support member; 807. Support rod; 9. Drill rod; 10. Spare drill rod; 11. Impactor; 12. Precast pile. DETAILED DESCRIPTION

[0021] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0022] Example 1, the drilling depth is less than the drill rod length, such as Figure 1-12 As shown: 1. Determine the position of the pile foundation through the positioning device and mark the drilling position with lime powder. The construction personnel move the Heze pile driver to the designated position through remote control and fix the fuselage 1 through its fixing device. The drilling mechanism 3 is moved out of the fuselage 1 through the mechanical arm 2. The slot of the slewing head 5 is moved to the upper caliper 601 position of the unloading rod assembly 6 through the propulsion beam 4. Grease is applied to the threaded end for lubrication. The construction personnel move the slot of the external thread end of the drill rod 9 to the lower caliper 603 position of the unloading rod assembly 6. Grease is also applied to the threaded end. The drill rod 9 is adjusted to the lower caliper 603 position. The interface of the swivel head 5 is aligned, the hydraulic cylinder 604 of the unloading rod assembly 6 is extended to drive the drill rod 9 to rotate clockwise, the swivel head 5 is connected and fixed to the drill rod 9, and the groove of the internal thread end of the drill rod 9 is moved to the upper caliper 601 position of the unloading rod assembly 6 through the propulsion beam 4. The drill bit 8 is installed on the drill rod 9 in the same way. After the installation is completed, the swivel head 5 and the drill bit 8 are measured by a level, and the height difference between the two points is calculated. By fine-tuning the position, the connection level is ensured. Since the swivel head 5 and the drill bit 8 are installed horizontally, the connections of each component are all horizontal.

[0023] 2. Move the drilling mechanism 3 to 20 cm above the drilling position by the robotic arm 2, then control the propulsion beam 4 of the drilling mechanism 3 to push the drill bit 8 downward to 5 cm above the drilling position, adjust the robotic arm 2 again so that the center position of the drill bit 8 corresponds to the marked drilling position, control the drilling mechanism 3 to move the drill bit 8 to the top, adjust the robotic arm 2 to move the drilling mechanism 3 downward until the legs of the drilling mechanism 3 contact the ground, measure the verticality of the drilling mechanism 3 and the ground with a verticality measuring instrument, ensure that the drilling mechanism 3 stands upright on the ground through fine-tuning, move the drill bit 8 downward to the drilling position by the propulsion beam 4 of the drilling mechanism 3, the impact surface of the drill bit 8 contacts the ground, and start the rotary head 5.

[0024] 3. During the drilling process, the propulsion beam 4 of the drilling mechanism 3 controls the rotary head 5 to advance downward, and the rotary head 5 continuously drives the drill bit 8 to advance downward. At the same time, the rotary head 5 continuously drives the drill bit 8 to rotate, and the slag generated by the drilling continuously moves upward from the gap at the bottom of the drill bit 8 due to its downward extrusion force. When it moves to the guide piece 802 on the periphery of the slag collecting bucket 801, since the slag collecting bucket 801 rotates with the rotation of the rotary head 5, the slag moves upward with the rotation of the guide piece 802 around the drill bit 8 and is brought into the slag collecting bucket 801.

[0025] 4. When the propulsion beam 4 of the drilling mechanism 3 advances downward by 1.5m, that is, when the drill bit 8 moves downward by 1.5m, the propulsion beam 4 stops working, and the air compressor is started. Compressed air is continuously blown into the air inlet end 501 of the rotary head 5 through the air compressor, and the high-pressure air is transmitted to the drill bit 8 through the intermediate high-pressure air duct 7. The compressed air blown out through the drill bit end 804 blows out the fine slag upward. When the fine slag moves upward to the guide piece 802 of the slag collecting bucket 801, the drill bit 8 rotates clockwise under the drive of the rotary head 5, thereby bringing the fine slag into the slag collecting bucket 801. After working continuously for 30s, the air compressor stops working, and the propulsion beam 4 continues to drive the rotary head 5 to move downward, thereby driving the drill bit 8 to move downward.

[0026] 5. There are two upper and lower support members 806 in the slag collecting bucket 801. When the accumulation height of the slag in the slag collecting bucket 801 reaches the support member 806 above the slag collecting bucket 801, the rotary head 5 stops rotating, and the pushing beam 4 of the drilling mechanism 3 is operated to push the drill bit 8 out of the hole. Then, the mechanical arm 2 is operated to move the drilling mechanism 3 aside, and the drill bit 8 is moved downward by the pushing beam 4 of the drilling mechanism 3 until the scraper 805 of the drill bit 8 touches the ground. The bolts of the flip cover 803 are removed by tools, and the handle of the flip cover 803 on one side is grasped and pulled out to fix it through the support rod 807. The flip cover 803 on the other side is opened in the same way. When all the slag in the slag collecting bucket 801 is discharged After closing the flip cover 803, fix it with bolts, move the drill bit 8 upward by 20 cm through the propulsion beam 4 of the drilling mechanism 3, and then move the drilling mechanism 3 to the hole position through the robotic arm 2. After moving to the approximate position, move the drill bit 8 downward through the propulsion beam 4 of the drilling mechanism 3. Fine-tune the position of the drill bit 8 through the robotic arm 2 until the drill bit 8 is completely placed in the hole and the guide piece 802 of the drill bit 8 does not get stuck around the hole wall. Measure the verticality of the drilling mechanism 3 and the ground with a verticality measuring instrument. Ensure that the drilling mechanism 3 stands upright on the ground through fine-tuning, start the rotary head 5 and continuously propel the drill bit 8 to continue drilling. Repeat this operation in subsequent drilling work until drilling is completed.

[0027] 6. After the drilling is completed, the rotary head 5 stops working, the propulsion beam 4 is moved upward, driving the rotary head 5 to move upward, thereby removing the drill bit 8 from the hole, and the drilling mechanism 3 is moved to the fuselage 1 by the mechanical arm 2. The precast pile 12 on the fuselage 1 is clamped by the hydraulic mechanical claw 302 on the drilling mechanism 3. The drilling mechanism 3 is moved by the mechanical arm 2 to move the near-ground end of the precast pile 12 to the hole mouth. The near-ground end of the precast pile 12 is the end that is in contact with the bottom surface of the hole. The verticality is measured by a verticality measuring instrument. The verticality of the precast pile 12 to the ground ensures that the precast pile 12 is placed perpendicular to the ground. Since the diameter of the drill hole is slightly larger than the diameter of the precast pile 12, the drilling mechanism 3 is driven by the mechanical arm 2 to push the precast pile 12 downward by 1m, and the hydraulic mechanical claw 302 is released, so that the precast pile 12 can slide on the hydraulic mechanical claw 302 without tilting. The impactor 11 continuously provides impact force downward to the precast pile 12, so that the precast pile 12 is continuously pushed downward until the near-ground end of the precast pile 12 is completely in contact with the bottom surface of the hole.

[0028] 7. After the installation of the prefabricated piles 12 is completed, the slewing head 5 is moved downward by moving the propulsion beam 4, driving the drill bit 8 to move, so that the slot of the drill bit 8 is aligned with the lower caliper 603 of the unloading rod assembly 6, and the slot at the internal thread position of the drill rod 9 is aligned with the upper caliper 601 of the unloading rod assembly 6, and the hydraulic cylinder 604 of the unloading rod assembly 6 is retracted to drive the drill bit 8 to rotate counterclockwise, so that the drill bit 8 and the drill rod 9 are removed, and the drill rod 9 is removed from the slewing head 5 by the same method, and the drilling mechanism 3 is retracted to the Heze pile driver by the robotic arm 2, and the fixing device on the fuselage 1 is released and the Heze pile driver is removed by remote control, and the work is completed.

[0029] Example 2, the drilling depth is greater than the drill rod length, such as Figure 1-12 As shown: 1. Determine the position of the pile foundation through the positioning device and mark the drilling position with lime powder. The construction personnel move the Heze pile driver to the designated position through remote control and fix the fuselage 1 through its fixing device. The drilling mechanism 3 is moved out of the fuselage 1 through the mechanical arm 2. The slot of the slewing head 5 is moved to the upper caliper 601 position of the unloading rod assembly 6 through the propulsion beam 4. Grease is applied to the threaded end for lubrication. The construction personnel move the slot of the external thread end of the drill rod 9 to the lower caliper 603 position of the unloading rod assembly 6. Grease is also applied to the threaded end. The drill rod 9 is adjusted to the lower caliper 603 position. The interface of the swivel head 5 is aligned, the hydraulic cylinder 604 of the unloading rod assembly 6 is extended to drive the drill rod 9 to rotate clockwise, the swivel head 5 is connected and fixed to the drill rod 9, and the groove of the internal thread end of the drill rod 9 is moved to the upper caliper 601 position of the unloading rod assembly 6 through the propulsion beam 4. The drill bit 8 is installed on the drill rod 9 in the same way. After the installation is completed, the swivel head 5 and the drill bit 8 are measured by a level, and the height difference between the two points is calculated. By fine-tuning the position, the connection level is ensured. Since the swivel head 5 and the drill bit 8 are installed horizontally, the connections of each component are all horizontal.

[0030] 2. Move the drilling mechanism 3 to 20 cm above the drilling position by the robotic arm 2, then control the propulsion beam 4 of the drilling mechanism 3 to push the drill bit 8 downward to 5 cm above the drilling position, adjust the robotic arm 2 again so that the center position of the drill bit 8 corresponds to the marked drilling position, control the drilling mechanism 3 to move the drill bit 8 to the top, adjust the robotic arm 2 to move the drilling mechanism 3 downward until the legs of the drilling mechanism 3 contact the ground, measure the verticality of the drilling mechanism 3 and the ground with a verticality measuring instrument, ensure that the drilling mechanism 3 stands upright on the ground through fine-tuning, move the drill bit 8 downward to the drilling position by the propulsion beam 4 of the drilling mechanism 3, the impact surface of the drill bit 8 contacts the ground, and start the rotary head 5.

[0031] 3. During the drilling process, the propulsion beam 4 of the drilling mechanism 3 controls the rotary head 5 to advance downward, and the rotary head 5 continuously drives the drill bit 8 to advance downward. At the same time, the rotary head 5 continuously drives the drill bit 8 to rotate, and the slag generated by the drilling continuously moves upward from the gap at the bottom of the drill bit 8 due to its downward extrusion force. When it moves to the guide piece 802 on the periphery of the slag collecting bucket 801, since the slag collecting bucket 801 rotates with the rotation of the rotary head 5, the slag moves upward with the rotation of the guide piece 802 around the drill bit 8 and is brought into the slag collecting bucket 801.

[0032] 4. When the propulsion beam 4 of the drilling mechanism 3 advances downward by 1.5m, that is, when the drill bit 8 moves downward by 1.5m, the propulsion beam 4 stops working, and the air compressor is started. Compressed air is continuously blown into the air inlet end 501 of the rotary head 5 through the air compressor, and the high-pressure air is transmitted to the drill bit 8 through the intermediate high-pressure air duct 7. The compressed air blown out through the drill bit end 804 blows out the fine slag upward. When the fine slag moves upward to the guide piece 802 of the slag collecting bucket 801, the drill bit 8 rotates clockwise under the drive of the rotary head 5, thereby bringing the fine slag into the slag collecting bucket 801. After working continuously for 30s, the air compressor stops working, and the propulsion beam 4 continues to drive the rotary head 5 to move downward, thereby driving the drill bit 8 to move downward.

[0033] 5. There are two upper and lower support members 806 in the slag collecting bucket 801. When the accumulation height of the slag in the slag collecting bucket 801 reaches the support member 806 above the slag collecting bucket 801, the rotary head 5 stops rotating, and the pushing beam 4 of the drilling mechanism 3 is operated to push the drill bit 8 out of the hole. Then, the mechanical arm 2 is operated to move the drilling mechanism 3 aside, and the drill bit 8 is moved downward by the pushing beam 4 of the drilling mechanism 3 until the scraper 805 of the drill bit 8 touches the ground. The bolts of the flip cover 803 are removed by tools, and the handle of the flip cover 803 on one side is grasped and pulled out to fix it through the support rod 807. The flip cover 803 on the other side is opened in the same way. When all the slag in the slag collecting bucket 801 is discharged After closing the flip cover 803, fix it with bolts, move the drill bit 8 upward by 20 cm through the propulsion beam 4 of the drilling mechanism 3, and then move the drilling mechanism 3 to the hole position through the robotic arm 2. After moving to the approximate position, move the drill bit 8 downward through the propulsion beam 4 of the drilling mechanism 3. Fine-tune the position of the drill bit 8 through the robotic arm 2 until the drill bit 8 is completely placed in the hole and the guide piece 802 of the drill bit 8 does not get stuck around the hole wall. Measure the verticality of the drilling mechanism 3 and the ground with a verticality measuring instrument. Ensure that the drilling mechanism 3 stands upright on the ground through fine-tuning, start the rotary head 5 and continuously propel the drill bit 8 to continue drilling. Repeat this operation in subsequent drilling work until drilling is completed.

[0034] 6. When the pushing beam 4 of the drilling mechanism 3 pushes the drill rod 9 to the end of the drill rod 9, the swivel head 5 stops working, and the slot of the swivel head 5 is adjusted to the position of the upper caliper 601 of the rod unloading assembly 6 by the pushing beam 4, and its slot is fixed to the position of the upper caliper 601, and the slot of the external thread position of the drill rod 9 is adjusted to the position of the lower caliper 603 of the rod unloading assembly 6, and the hydraulic cylinder 604 of the rod unloading assembly 6 is retracted to drive the drill rod 9 to rotate counterclockwise, so that the swivel head 5 and the drill rod 9 are removed. After the removal is completed, By moving the propulsion beam 4, the slewing head 5 moves upward by 8m, and the slot at the internal thread position of the spare drill rod 10 is placed on the upper clamp 601 position of the unloading rod assembly 6 by the manipulator 301. Grease is applied to the internal thread position of the spare drill rod 10 and the external thread position of the drill rod 9 respectively, and their interfaces are aligned. The hydraulic cylinder 604 of the unloading rod assembly 6 is extended to drive the drill rod 9 to rotate clockwise, so that the spare drill rod 10 is connected to the drill rod 9. After the connection is completed, the drilling mechanism 3 is moved by the manipulator 2 so that the drilling mechanism 3 is The unloading rod assembly 6 moves upward so that the lower clamp 603 of the unloading rod assembly 6 is aligned with the slot of the spare drill rod 10, and the propulsion beam 4 is moved to move the swivel head 5 downward so that the slot of the swivel head 5 is aligned with the upper clamp 601 of the unloading rod assembly 6. Grease the threaded ends of the two rods and align their interfaces. The hydraulic cylinder 604 of the unloading rod assembly 6 is extended to drive the spare drill rod 10 to rotate clockwise so that the swivel head 5 is connected to the spare drill rod 10. After installation, the swivel head 5 and the spare drill rod are aligned using a level. 10 is measured, and the height difference between the two points is calculated. The connection level is ensured by fine-tuning the position. Since the slewing head 5 and the spare drill rod 10 are installed horizontally, the connections of each component are horizontal. The mechanical arm 2 is adjusted to place the drilling mechanism 3 vertically, and its verticality with the ground is measured by a verticality measuring instrument. The drilling mechanism 3 is placed vertically by fine-tuning. After the position is confirmed, the propulsion beam 4 of the drilling mechanism 3 is adjusted to make the impact surface of the drill bit 8 contact the ground, and the slewing head 5 is started, and the drilling mechanism 3 continues to move downward.

[0035] 7. After the drilling is completed, the rotary head 5 stops working, the propulsion beam 4 is moved upward, driving the rotary head 5 to move upward, thereby removing the drill bit 8 from the hole, and the drilling mechanism 3 is moved to the fuselage 1 by the mechanical arm 2. The precast pile 12 on the fuselage 1 is clamped by the hydraulic mechanical claw 302 on the drilling mechanism 3. The drilling mechanism 3 is moved by the mechanical arm 2 to move the near-ground end of the precast pile 12 to the hole mouth. The near-ground end of the precast pile 12 is the end that is in contact with the bottom surface of the hole. The verticality is measured by a verticality measuring instrument. The verticality of the precast pile 12 to the ground ensures that the precast pile 12 is placed perpendicular to the ground. Since the diameter of the drill hole is slightly larger than the diameter of the precast pile 12, the drilling mechanism 3 is driven by the mechanical arm 2 to push the precast pile 12 downward by 1m, and the hydraulic mechanical claw 302 is released, so that the precast pile 12 can slide on the hydraulic mechanical claw 302 without tilting. The impactor 11 continuously provides impact force downward to the precast pile 12, so that the precast pile 12 is continuously pushed downward until the near-ground end of the precast pile 12 is completely in contact with the bottom surface of the hole.

[0036] 8. After the prefabricated pile 12 is installed, the slewing head 5 is moved downward by moving the propulsion beam 4, driving the drill bit 8 to move, so that the slot of the drill bit 8 is aligned with the lower clamp 603 of the unloading rod assembly 6, and the slot at the internal thread position of the drill rod 9 is aligned with the upper clamp 601 of the unloading rod assembly 6, and the hydraulic cylinder 604 of the unloading rod assembly 6 is retracted to drive the drill bit 8 to rotate counterclockwise, so that the drill bit 8 and the drill rod 9 are removed, and the propulsion beam 4 is moved downward again to align the drill rod 9 with the lower clamp 603 of the unloading rod assembly 6. The slot at the external thread position of 9 is aligned with the lower caliper 603 of the rod unloading assembly 6, and the slot at the internal thread position of the spare drill rod 10 is aligned with the upper caliper 601 of the rod unloading assembly 6. The spare drill rod 10 and the drill rod 9 are removed from the rotary head 5 by the same method, and the drilling mechanism 3 is retracted onto the Heze pile driver through the robotic arm 2, the fixing device on the fuselage 1 is released and the Heze pile driver is removed by remote control, and the work is completed.

[0037] Working principle: This construction method mainly uses the pushing beam 4 of the drilling mechanism 3 to continuously push the drill bit 8 downward, and at the same time drives the drill bit 8 to rotate continuously through the rotary head 5, and cuts the soil and breaks the soil through the scraper 805 to achieve drilling work. The larger debris generated by drilling continuously moves upward due to the downward extrusion force of the drill bit 8, moves to the guide piece 802, and is driven into the slag collecting bucket 801 by the rotation of the guide piece 802. The fine debris is blown into the drill bit 8 by compressed air. Small slag is blown onto the guide piece 802 and is also driven into the slag collecting bucket 801 by the rotation of the guide piece 802. When the capacity of the slag collecting bucket 801 reaches the maximum value, the drill bit 8 is removed by the drilling mechanism 3, the flip cover 803 is opened, the slag inside the slag collecting bucket 801 is discharged, and it is fixed by the support rod 807. After emptying, the flip cover 803 is closed and fixed by bolts, and drilling is continued. The above operation is repeated until the hole is formed. After the hole is formed, the pile foundation construction is completed by placing the prefabricated piles 12.

[0038] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications derived therefrom remain within the scope of protection of the present invention.

Claims

1. A Heze pile driver, comprising a body (1), a mechanical arm (2) and a drilling mechanism (3), characterized in that: The drilling mechanism (3) is connected to the machine body (1) through the mechanical arm (2). The drilling mechanism (3) includes a propulsion beam (4), a rotary head (5), a rod unloading assembly (6) and a drill bit (8). The drill bit (8) is connected to the rotary head (5) through a drill rod (9). The rod unloading assembly (6) is arranged at the lower part of the propulsion beam (4). The rod unloading assembly (6) is used to disassemble the drill bit (8) and the drill rod (9). A slag collecting assembly is provided on the drill bit (8), and a guide is provided on the outer wall of the slag collecting assembly. The rotary head (5) is provided with an air inlet end (501), and the air inlet end (501) is used for externally connecting high-pressure gas. The rotary head (5), the drill rod (9) and the drill bit (8) are provided with high-pressure air passages (7) that are interconnected. The high-pressure gas is introduced into the rotary head (5) and ejected through the drill bit (8) to blow out the slag at the bottom. The rotary head (5) rotates to drive the guide assembly to guide the slag stuck between the slag collecting assembly and the hole wall to the slag inlet end of the slag collecting assembly, and the slag is concentrated in the slag collecting assembly.

2. The Heze pile driver according to claim 1, characterized in that: The high-pressure air channel (7) comprises a first air channel (701), a second air channel (702) and a third air channel (703), wherein the first air channel (701) is arranged on the rotary head (5), the second air channel (702) is arranged on the drill rod (9), and the third air channel (703) is arranged on the drill bit (8). When any two of the three are connected, the high-pressure air channel (7) can be connected and ejected from the end portion (804) of the drill bit.

3. The Heze pile driver according to claim 1, characterized in that: The slag collecting assembly comprises a slag collecting bucket (801), and a guide assembly is provided on the outer wall of the slag collecting bucket (801). During the drilling process of the drill bit (8), the slag collecting bucket (801) can be driven to rotate, thereby driving the guide assembly to rotate, thereby causing the slag stuck between the slag collecting bucket (801) and the hole wall to move along the slag inlet end of the slag collecting bucket (801) on the guide assembly and finally enter the slag collecting bucket (801). When the slag collecting bucket (801) reaches a certain capacity, the slag is discharged through the discharge assembly.

4. The Heze pile driver according to claim 3, characterized in that: The guide assembly comprises a guide piece (802), the guide piece (802) being arranged on the side wall of the slag collecting bucket (801) in a spiral ascending manner, and the projection area of ​​the guide piece (802) on the bottom surface is slightly smaller than the projection area of ​​the drill bit (8).

5. The Heze pile driver according to claim 1, characterized in that: The unloading rod assembly (6) consists of an upper caliper (601), a fixing seat (602) and a lower caliper (603), wherein the upper caliper (601) is fixed on the fixing seat (602), one end of the lower caliper (603) is rotatably connected to the fixing seat (602), and the other end is connected to a hydraulic cylinder (604), the other end of the hydraulic cylinder (604) is fixed on the fixing seat (602), and driving the hydraulic cylinder (604) can drive the lower caliper (603) to rotate around the upper caliper (601), thereby realizing the disassembly and assembly between the connected components.

6. A construction method, comprising the Kawaze pile driver according to any one of claims 1 to 5, characterized in that: The construction method includes drilling preparation, positioning the drill bit, advancing the drill bit, blowing air, removing slag, adding drill rods, installing precast piles, and completing drilling; The drilling preparation includes determining the location of the pile foundation and marking the drilling location, manually moving the Heze pile driver to the designated location and fixing the machine body (1), removing the drilling mechanism (3) from the machine body (1) through the mechanical arm (2), moving the rotary head to the upper clamp (601) position, moving the drill rod (9) to the lower clamp (603) position, pushing the hydraulic cylinder (604) to connect them, and connecting the drill bit (8) to the drill rod (9) in the same way; The drill bit is positioned, the drilling mechanism (3) is moved to a position above the drilling position by the mechanical arm (2), the rotary head (5) is driven by the propulsion beam (4) to move the drill bit (8) to the drilling position, the verticality thereof with the ground is measured by an instrument and the rotary head (5) is started; The propulsion drill bit drives the rotary head (5) to continuously advance downwards through the propulsion beam (4) during the drilling process, thereby driving the drill bit (8) to continuously advance downwards. The slag moves onto the guide piece (802) due to the downward squeezing force and is brought into the slag collecting bucket (801) along with the guide piece (802); The blowing is performed such that the propulsion beam (4) stops working after each downward advancement of 1.5 m, and compressed air is continuously blown out from the drill bit (8) for 30 seconds via the air compressor into the air inlet end (501), and the fine slag is blown onto the guide piece (802) via the drill bit end (804), and is then carried into the slag collecting bucket (801) along with the guide piece (802); The slag discharge, when the capacity of the slag collecting bucket (801) reaches the maximum value, the rotary head (5) stops rotating, and the rotary head (5) is driven upward by the propulsion beam (4), thereby moving the drill bit (8) out of the hole and moving it aside by the mechanical arm (2), opening the discharge assembly, discharging the slag, repositioning, measuring its verticality, and then continuing drilling; The drill rod is added by placing the rotary head (5) at the upper clamp (601) position of the rod removal assembly (6), placing the drill rod (9) at the lower clamp (603) position, removing the connection between the rotary head (5) and the drill rod (9) by pushing the hydraulic cylinder (604), adding a spare drill rod (10) therebetween, and measuring the level again by using an instrument; The prefabricated pile is installed, and after the drilling is completed, the drill bit (8) is removed from the hole by the rotary head (5), the prefabricated pile (12) is placed at the hole mouth, the prefabricated pile (12) is driven downward by the mechanical arm (2) to move 1 m, the clamping device is released, and the prefabricated pile (12) is placed into the hole by the impactor (11); When the drilling is finished, the upper part of the drilling mechanism (3) is removed by the unloading rod assembly (6), the drilling mechanism (3) is retracted into the Heze pile driver by the mechanical arm (2), the fuselage (1) is unfixed and the Heze pile driver is removed, and the work is finished.

7. The construction method according to claim 5, characterized in that: The slag collecting bucket (801) has two supporting members (806) arranged in an upper and lower arrangement. When the slag accumulation height in the slag collecting bucket (801) reaches the upper supporting member (806), slag discharge is performed. The slag collecting bucket (801) is rotatably connected to the discharge assembly below. The discharge assembly includes a flip cover (803). Slag discharge is achieved by lifting the flip cover (803). A support rod (807) is provided between the flip cover (803) and the scraper (805) to facilitate support for slag discharge.

8. The construction method according to claim 5, characterized in that: When the drilling depth is less than the drill rod (9), there is no need to perform the work of adding the drill rod (9).

9. The construction method according to claim 5, characterized in that: The clamping device comprises a hydraulic mechanical claw (302) for clamping the precast pile (12). During the drilling process, the hydraulic mechanical claw (302) does not clamp the precast pile (12). After the drilling is completed, the drilling mechanism (3) is driven to the machine body (1) by the mechanical arm (2), and the precast pile (12) is clamped by the hydraulic mechanical claw (302) and placed at the hole mouth.

10. The construction method according to claim 5, characterized in that: The diameter of the drilled hole is slightly larger than the diameter of the prefabricated pile (12), so as to facilitate the placement of the prefabricated pile (12).

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