Ultrahigh backfill soil slope rotary excavating pile construction equipment

Abstract

The utility model relates to ultrahigh backfill soil side slope rotary excavating pile construction equipment, and belongs to the field of rotary excavating pile construction, the ultrahigh backfill soil side slope rotary excavating pile construction equipment comprises a pile excavating machine main body, a hole collapse prevention mechanism is arranged on the lower surface of the pile excavating machine main body, and a scraping mechanism is arranged on the inner wall of the hole collapse prevention mechanism. According to the ultrahigh backfill slope rotary excavating pile construction equipment and the hole collapse prevention mechanism, in the construction process, a rotary excavating screw drives a barrel type drill bit to go deep into a soil layer, synchronous rotation of a fixing frame and other assemblies is ensured through a synchronous screw sleeve, the construction efficiency is improved, coordination in the construction process is ensured, after a drilled hole is formed, an extrusion roller rapidly intervenes, and the construction efficiency is improved. The device is driven by the air cylinder to be tightly attached to the inner wall of a drilled hole, filling soil of the hole wall is effectively extruded and compacted through mechanical force, hole collapse is prevented, in addition, through implementation of the mechanism, the extra construction cost and time delay caused by hole collapse can be reduced, and the construction efficiency is improved. And a safer and controllable construction environment is provided for a construction team.

Description

Technical Field

[0001] The present application relates to the technical field of rotary drilling pile construction, and in particular to a rotary drilling pile construction device for an ultra-high backfill soil slope. Background Art

[0002] Drilled piles refer to bored piles formed by a rotary drilling rig. During construction, the machine first uses a barrel-type drill bit with a valve at the bottom to rotate and crush the rock and soil, and directly loads the crushed rock and soil into the drill bit. The drill bit is then lifted out of the pile hole to discharge the internal crushed soil. This reciprocating cycle continuously rotates to extract and unload soil until the designed depth is reached. Drilled piles have been widely used in roads, railways, bridges, large buildings and other fields.

[0003] As disclosed in Chinese Patent Publication No. (CN117231119A), a high backfill rotary drilling pile construction equipment and construction method include a base, a plurality of rollers are installed at the bottom of the base, a vertically placed first slide shaft is fixed on the base, a first sliding block is provided in the first slide shaft for sliding engagement, a first rotating motor is fixed on the upper end of the first slide shaft, and a first threaded rod is provided at the output end of the first rotating motor; rotary drilling is performed through the cooperation of the base, the first slide shaft, the first sliding block, the first rotating motor, the first threaded rod, the second slide shaft, the second sliding block, the fixing ring sleeve, the support, the second rotating motor, the second threaded rod, and the drill bit, and the setting of the limit rod, the connecting block, the third slide shaft, the third sliding block, and the spinning rod is used to make the drill bit and the second threaded rod perform threaded engagement transmission. During the lifting process, the spinning rod rotates with the second threaded rod and squeezes the surrounding wall of the drill hole to prevent the inner wall of the drill hole from losing support and collapsing during the process of lifting the drill bit.

[0004] However, the prior art, such as the above-mentioned patent, still has the problem of poor anti-hole collapse squeezing effect during the unloading process of the rotary drilling rig. In the prior art, the drill bit and the second threaded rod are threadedly engaged and driven to lift the drill bit, and the spinning rod rotates with the second threaded rod and squeezes the surrounding wall of the drill hole to prevent the inner wall of the drill hole from losing support and collapsing during the process of lifting the drill bit. In this method, the contact area between the spinning rod and the inner wall of the drill hole is small, and as the drill bit rotates, it can only cut off the excess fill on the inner wall of the drill hole and apply a certain force to the hole wall. It is impossible to effectively apply pressure to ensure that the fill inside the drill hole is compacted to prevent hole collapse. Utility Model Content

[0005] In response to the shortcomings of the existing technology, this application provides a rotary drilling pile construction equipment for ultra-high backfill slopes, which has the advantages of good anti-collapse hole extrusion effect, and solves the problem of poor anti-collapse hole extrusion effect during the unloading process of the rotary drilling machine.

[0006] To achieve the above-mentioned object, the present application provides the following technical solution: a rotary pile construction device for super-high backfill slope, comprising a pile digging machine body, a hole-collapse prevention mechanism provided on the lower surface of the pile digging machine body, and a scraping mechanism provided on the inner wall of the hole-collapse prevention mechanism;

[0007] The anti-hole collapse mechanism includes a rotary drilling screw, a barrel drill bit, a synchronous screw sleeve, two fixed frames, four cylinders, two pushing frames, two support shafts and two squeezing rollers. The rotary drilling screw is rotatably connected to the lower surface of the pile digging machine body, the barrel drill bit is fixed to the bottom end of the rotary drilling screw, the synchronous screw sleeve is fixed to the outer side of the rotary drilling screw, the two fixed frames are respectively fixed to the left and right sides of the synchronous screw sleeve, the four cylinders are respectively fixed to the upper and lower ends of the inner walls of the two fixed frames, the two pushing frames are respectively fixed to the output shafts of the cylinders on the left and right sides, the two support shafts are respectively fixed between the upper and lower inner walls of the two pushing frames, and the two squeezing rollers are respectively rotatably connected to the outer sides of the two support shafts.

[0008] By adopting this technical solution, the equipment improves the stability and efficiency of rotary drilling pile construction by integrating an anti-collapse mechanism and a scraping mechanism. The anti-collapse mechanism can squeeze and compact the hole wall in real time during the drilling process, effectively preventing the hole collapse caused by loose backfill soil, ensuring construction safety. The scraping mechanism helps to promptly remove residual soil and rocks on the drill bit and the hole wall, reducing interference with the next rotary drilling operation and improving the continuity and quality of construction.

[0009] Furthermore, a wear-resistant coating is fixed on the outer sides of the two squeezing rollers.

[0010] By adopting this technical solution, the wear-resistant coating on the outside of the extrusion roller significantly improves the durability of the equipment and extends the service life of the equipment. The wear-resistant coating reduces the wear caused by long-term contact with soil and rocks, reducing maintenance costs and replacement frequency.

[0011] Furthermore, the fixing frame and the pushing frame are both shaped like a cuboid with a hollow interior and a missing side away from the synchronous screw sleeve.

[0012] By adopting this technical solution, the internal hollow design of the fixing frame and the pushing frame reduces the weight of the equipment, improves the maneuverability and transportation convenience of the equipment, and at the same time, helps to improve the stability and durability of the equipment.

[0013] Furthermore, the distance between the two opposite sides of the fixing frames is smaller than the diameter of the barrel drill bit.

[0014] By adopting this technical solution, the distance between the fixing frames is smaller than the diameter of the barrel drill bit, which can ensure that the fixing frames provide sufficient support force during the construction process, enhance the stability of the equipment, and may also help improve the rotary drilling efficiency.

[0015] Furthermore, the number of the rotary drilling screws is not less than two, and the top of the barrel drill bit is hinged with a cleaning valve.

[0016] By adopting this technical solution, the number of rotary drilling screws is no less than two, providing stronger power and stability. The design of the cleaning valve helps to clean the internal broken soil during the drill bit lifting process, reduce the load on the drill bit, and improve construction efficiency.

[0017] Furthermore, the scraping mechanism includes a mounting plate, two fixed plates, a connecting shaft, a rotating drum, a scraper and a supporting spring. The mounting plate is fixed to the inner wall of the pushing frame, and the two fixed plates are respectively fixed to the upper and lower sides of the outer surface of the mounting plate. The connecting shaft is vertically fixed between the opposite sides of the two fixed plates. The rotating drum is rotatably connected to the outside of the connecting shaft. The scraper is fixed to the outside of the rotating drum, and the other end of the scraper is in contact with the outside of the extrusion roller. The two ends of the supporting spring are respectively fixed to the opposite sides of the scraper and the mounting plate.

[0018] By adopting this technical solution, the design of the scraping mechanism enables the scraper to fit closely with the squeezing roller, effectively removing the dirt on the surface of the squeezing roller, keeping the inner wall of the drill hole clean, and improving construction quality.

[0019] Furthermore, a mounting screw hole is provided on one side of the mounting plate opposite to the pushing frame, and a fixing bolt is threadedly connected to the inner wall of the mounting screw hole.

[0020] By adopting this technical solution, the fixing method of the mounting plate and the pushing frame provides a stable mounting platform, ensuring the stability and reliability of the scraping mechanism during the construction process. The threaded fixing bolts increase the firmness of the installation and reduce loosening caused by vibration or impact.

[0021] Furthermore, the height of the scraper is greater than the length of the squeezing roller, and a cleaning slope is provided at one end of the scraper close to the squeezing roller.

[0022] By adopting this technical solution, the height of the scraper is greater than the length of the squeezing roller, so that the scraper can more effectively remove the dirt on the surface of the squeezing roller, and the design of the cleaning slope helps the dirt to slide smoothly, further improving the cleaning efficiency.

[0023] Compared with the existing technology, the technical solution of this application has the following beneficial effects:

[0024] 1. This ultra-high backfill slope rotary drilling pile construction equipment has an anti-collapse mechanism. During the construction process, the rotary drilling screw drives the barrel drill bit to penetrate the soil layer, and the synchronous screw sleeve ensures the synchronous rotation of the fixed frame and other components. This not only improves the construction efficiency, but also ensures the coordination of the construction process. When the borehole is formed, the extrusion roller quickly intervenes and, driven by the cylinder, fits tightly with the inner wall of the borehole. Mechanical force is used to effectively squeeze and compact the backfill on the hole wall, thereby preventing the occurrence of collapse. In addition, the implementation of this mechanism can reduce additional construction costs and time delays caused by collapse, providing a safer and more controllable construction environment for the construction team.

[0025] 2. In this ultra-high backfill slope rotary pile construction equipment, the scraper mechanism is fixed by the mounting plate and the pushing frame, and the scraper is accurately placed in the pushing frame. The elastic force of the supporting spring is used to keep the scraper in close contact with the surface of the squeezing roller. When the squeezing roller squeezes the inner wall of the borehole, the scraper rotates accordingly, effectively scraping off the soil adhering to the surface of the squeezing roller, which not only cleans the squeezing roller, but also improves the smoothness of the inner wall of the borehole, providing a cleaner and tidier working environment for subsequent construction, reducing construction problems caused by residual soil and rocks, and improving the continuity and quality of construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the structure of this application;

[0027] Figure 2 This is a schematic diagram of the anti-collapse mechanism for this application;

[0028] Figure 3 This is a top view of the scraping mechanism of this application;

[0029] Figure 4 This is a partial schematic diagram of the scraping mechanism of this application.

[0030] In the figure: 1. Pile digger body; 2. Anti-collapse mechanism; 21. Rotary drilling screw; 22. Barrel drill bit; 23. Synchronous screw sleeve; 24. Fixed frame; 25. Cylinder; 26. Push frame; 27. Support shaft; 28. Squeeze roller; 3. Scraping mechanism; 31. Mounting plate; 32. Fixed plate; 33. Connecting shaft; 34. Rotating drum; 35. Scraper; 36. Support spring. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0032] See also Figure 1 In this embodiment, a rotary drilling pile construction device for an ultra-high backfill slope includes a pile excavator body 1. The lower surface of the pile excavator body 1 is provided with an anti-hole collapse mechanism 2, and the inner wall of the anti-hole collapse mechanism 2 is provided with a scraping mechanism 3. By integrating the anti-hole collapse mechanism 2 and the scraping mechanism 3, the stability and efficiency of the rotary drilling pile construction are improved. The anti-hole collapse mechanism 2 can squeeze and compact the hole wall in real time during the drilling process, effectively preventing the hole collapse caused by loose backfill soil, ensuring construction safety, and the scraping mechanism 3 helps to promptly remove residual soil and rocks on the drill bit and the hole wall, reducing interference with the next rotary drilling operation, and improving the continuity and quality of construction.

[0033] See also Figure 2 In order to prevent the hole from collapsing, the anti-collapse mechanism 2 in this embodiment includes a rotary drilling screw 21, a barrel drill bit 22, a synchronous screw sleeve 23, two fixing frames 24, four cylinders 25, two pushing frames 26, two support shafts 27 and two squeezing rollers 28. The rotary drilling screw 21 is rotatably connected to the lower surface of the pile digging machine body 1, and the barrel drill bit 22 is fixed to the bottom end of the rotary drilling screw 21. When the rotary drilling screw 21 is started, the barrel drill bit 22 is driven to rotate to realize the rotary drilling pile construction of the super-high backfill slope. The synchronous screw sleeve 23 is fixed to the outer side of the rotary drilling screw 21, and the two fixing frames 24 are fixed to the left and right sides of the synchronous screw sleeve 23 respectively. The cylinders 25 are respectively fixed to the upper and lower ends of the inner walls of the two fixing frames 24. After the barrel drill bit 22 digs the hole, the synchronous screw sleeve 23 drives the fixing frame 24 and other components to rotate synchronously with the rotary drilling screw 21. The two pushing frames 26 are respectively fixed to the output shafts of the cylinders 25 on the left and right sides. The two supporting shafts 27 are respectively fixed between the upper and lower inner walls of the two pushing frames 26. The two squeezing rollers 28 are respectively rotatably connected to the outside of the two support shafts 27. The squeezing rollers 28 move into the inside of the drill hole and prepare for squeezing and compacting operations. The output shaft of the cylinder 25 extends to drive the pushing frame 26 to move out, so that the squeezing rollers 28 fit the inner wall of the drill hole.

[0034] In this embodiment, the outer sides of the two squeezing rollers 28 are fixed with a wear-resistant coating. The shape of the fixing frame 24 and the pushing frame 26 are both hollow inside and missing on one side away from the synchronous screw sleeve 23. The distance between the opposite sides of the two fixing frames 24 is less than the diameter of the barrel drill bit 22. The number of rotary drilling screws 21 is not less than two. The top of the barrel drill bit 22 is hinged with a cleaning valve. The rotary drilling screw 21 continues to drive the rotation, and the squeezing roller 28 rotates along the inner wall of the borehole, and cooperates with the cylinder 25 to apply pressure to squeeze and compact the fill on the inner wall of the borehole to prevent the hole from collapsing.

[0035] It should be noted that during the construction of the anti-hole collapse mechanism 2, the rotary drilling screw 21 drives the barrel drill bit 22 to penetrate into the soil layer, and the synchronous screw sleeve 23 ensures the synchronous rotation of the fixed frame 24 and other components, which not only improves the construction efficiency, but also ensures the coordination during the construction process. When the hole is formed, the extrusion roller 28 quickly intervenes and fits tightly with the inner wall of the hole through the drive of the cylinder 25, and uses mechanical force to effectively squeeze and compact the fill of the hole wall, thereby preventing the occurrence of hole collapse. In addition, through the implementation of this mechanism, the additional construction costs and time delays caused by hole collapse can be reduced, providing the construction team with a safer and controllable construction environment.

[0036] See also Figures 3 and 4 The scraper 35 is fixed to the push frame 26, and the two fixing plates 32 are respectively fixed to the upper and lower sides of the outer surface of the mounting plate 31. The mounting plate 31 is fixed to the pushing frame 26 to ensure the correct position of the scraper mechanism 3. The scraper 35 is placed in the pushing frame 26, and the connecting shaft 33 is vertically fixed between the opposite sides of the two fixing plates 32. The rotating drum 34 is rotatably connected to the outer side of the connecting shaft 33. The scraper 35 is fixed to the outer side of the rotating drum 34, and the other end of the scraper 35 is in contact with the outer side of the squeezing roller 28. The elastic force of the support spring 36 is used to make the scraper 35 fit the surface of the squeezing roller 28. The two ends of the support spring 36 are respectively fixed to the opposite side of the scraper 35 and the mounting plate 31.

[0037] In this embodiment, mounting screw holes are provided on the side of the mounting plate 31 opposite to the pushing frame 26, and the inner walls of the mounting screw holes are threadedly connected with fixing bolts. The height of the scraper 35 is greater than the length of the squeezing roller 28, and a cleaning slope is provided on the end of the scraper 35 close to the squeezing roller 28. When the squeezing roller 28 squeezes the inner wall of the drill hole, the soil adhered to the surface of the squeezing roller 28 will contact the scraper 35. The scraper 35 will scrape off the soil adhered to the outside of the squeezing roller 28, clean the surface of the squeezing roller 28, and avoid soil accumulation affecting the subsequent extrusion and compaction effect. Through the scraping action of the scraper 35, the smoothness of the inner wall of the drill hole is improved, ensuring the construction quality.

[0038] It should be noted that when the squeezing roller 28 squeezes the inner wall of the borehole, the scraper 35 rotates accordingly, effectively scraping off the dirt adhering to the surface of the squeezing roller 28, which not only cleans the squeezing roller 28, but also improves the smoothness of the inner wall of the borehole, providing a cleaner and tidier working environment for subsequent construction, reducing construction problems caused by residual soil and rocks, and improving the continuity and quality of construction.

[0039] The working principle of the above embodiment is:

[0040] (1) Start the rotary drilling screw 21 to drive the barrel drill bit 22 to rotate, and realize the rotary drilling pile construction of the super-high backfill slope. After the barrel drill bit 22 digs the borehole, the synchronous screw sleeve 23 drives the fixed frame 24 and other components to rotate synchronously with the rotary drilling screw 21. The squeezing roller 28 moves into the borehole to prepare for the squeezing and compacting operation. The output shaft of the cylinder 25 extends and drives the push frame 26 to move out, so that the squeezing roller 28 fits the inner wall of the borehole. The rotary drilling screw 21 continues to drive the rotation, and the squeezing roller 28 rotates along the inner wall of the borehole, and cooperates with the cylinder 25 to apply pressure to squeeze and compact the backfill on the inner wall of the borehole to prevent the hole from collapsing.

[0041] (2) The mounting plate 31 is fixed to the pushing frame 26 to ensure the correct position of the scraping mechanism 3. The scraper 35 is placed in the pushing frame 26. The elastic force of the support spring 36 is used to make the scraper 35 fit the surface of the squeezing roller 28. When the squeezing roller 28 squeezes the inner wall of the borehole, the soil adhering to the surface of the squeezing roller 28 will come into contact with the scraper 35. The scraper 35 will scrape off the soil adhering to the outer side of the squeezing roller 28 and clean the surface of the squeezing roller 28 to avoid soil accumulation affecting the subsequent squeezing and compacting effect. The scraping action of the scraper 35 improves the smoothness of the inner wall of the borehole and ensures the construction quality.

Claims

1. A rotary pile construction device for super-high backfill slope, comprising a pile digging machine body (1), characterized in that: The lower surface of the pile digging machine body (1) is provided with an anti-hole collapse mechanism (2), and the inner wall of the anti-hole collapse mechanism (2) is provided with a scraping mechanism (3); The anti-hole collapse mechanism (2) comprises a rotary excavation screw (21), a barrel drill bit (22), a synchronous screw sleeve (23), two fixed frames (24), four cylinders (25), two push frames (26), two support shafts (27) and two squeezing rollers (28), wherein the rotary excavation screw (21) is rotatably connected to the lower surface of the pile digging machine body (1), the barrel drill bit (22) is fixed to the bottom end of the rotary excavation screw (21), and the synchronous screw sleeve (23) is connected to the outer surface of the rotary excavation screw (21). The two fixing frames (24) are fixed to the left and right sides of the synchronous screw sleeve (23), respectively. The four cylinders (25) are fixed to the upper and lower ends of the inner walls of the two fixing frames (24), respectively. The two pushing frames (26) are fixed to the output shafts of the cylinders (25) on the left and right sides, respectively. The two supporting shafts (27) are fixed between the upper and lower inner walls of the two pushing frames (26), respectively. The two squeezing rollers (28) are rotatably connected to the outer sides of the two supporting shafts (27).

2. The ultra-high backfill slope rotary drilling pile construction equipment according to claim 1, characterized in that: The outer sides of the two squeezing rollers (28) are both fixed with a wear-resistant coating.

3. The ultra-high backfill slope rotary drilling pile construction equipment according to claim 1, characterized in that: The fixing frame (24) and the pushing frame (26) are both shaped like rectangular parallelepipeds with a hollow interior and a missing side away from the synchronous screw sleeve (23).

4. The ultra-high backfill slope rotary drilling pile construction equipment according to claim 1, characterized in that: The distance between the two opposite sides of the fixing frames (24) is smaller than the diameter of the barrel drill bit (22).

5. The ultra-high backfill slope rotary drilling pile construction equipment according to claim 1, characterized in that: The number of the rotary drilling screws (21) is not less than two, and a cleaning valve is hinged on the top of the barrel drill bit (22).

6. The ultra-high backfill slope rotary drilling pile construction equipment according to claim 1, characterized in that: The scraping mechanism (3) comprises a mounting plate (31), two fixed plates (32), a connecting shaft (33), a rotating drum (34), a scraper (35) and a support spring (36), wherein the mounting plate (31) is fixed to the inner wall of the pushing frame (26), the two fixed plates (32) are respectively fixed to the upper and lower sides of the outer surface of the mounting plate (31), the connecting shaft (33) is vertically fixed between the opposite sides of the two fixed plates (32), the rotating drum (34) is rotatably connected to the outer side of the connecting shaft (33), the scraper (35) is fixed to the outer side of the rotating drum (34), and the other end of the scraper (35) is in contact with the outer side of the squeezing roller (28), and the two ends of the support spring (36) are respectively fixed to the opposite sides of the scraper (35) and the mounting plate (31).

7. The ultra-high backfill slope rotary drilling pile construction equipment according to claim 6, characterized in that: The mounting plate (31) is provided with mounting screw holes on one side opposite to the push frame (26), and the inner wall of the mounting screw hole is threadedly connected with a fixing bolt.

8. The ultra-high backfill slope rotary drilling pile construction equipment according to claim 6, characterized in that: The height of the scraper (35) is greater than the length of the squeezing roller (28), and a cleaning slope is provided at one end of the scraper (35) close to the squeezing roller (28).

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