Double-pipe jet grouting pile machine for repairing defects of rock-socketed section of cast-in-place pile

Abstract

The utility model relates to a double-pipe jet grouting pile machine for defect repair of a rock-socketed section of a cast-in-place pile, and belongs to the field of pile machines.The double-pipe jet grouting pile machine comprises a machine body, a fixing table is fixed to the left side of the machine body, a driving device is fixed to the left side of the fixing table, a drill rod is arranged in the driving device, and a positioning mechanism is arranged on the outer side of the drill rod; and a repairing mechanism is arranged at the bottom end of the drill rod. According to the double-pipe jet grouting pile machine for repairing the defects of the rock-socketed section of the cast-in-place pile, the positioning mechanism is arranged, the fixing pipe sleeve is arranged on the outer side of the drill rod in a sleeving mode, structural fixation and stability are provided, a transparent anti-explosion cover provides protection for internal assemblies, and the visual camera is prevented from being damaged by external factors such as rock fragments; the four vision cameras provide visual monitoring, accurate positioning of the drill rod and accurate recognition of a defect area are ensured, the light supplementing lamps are evenly distributed and fixed along the outer surface of the connecting ring, sufficient light is provided, and it is ensured that the vision cameras can clearly capture images in the underground environment with insufficient light.

Description

Technical Field

[0001] The present application relates to the technical field of pile drivers, and in particular to a double-tube rotary jet pile driver for repairing defects in rock-embedded sections of bored piles. Background Art

[0002] With the rapid development of the construction industry, the requirements for bored pile construction are becoming higher and higher; therefore, more and more bored pile construction needs to be carried out at a depth below the medium-weathered rock layer to ensure the bearing capacity of the bored pile. Generally, common bored pile construction needs to be carried out about 2-6m below the medium-weathered rock layer. In the process of bored pile construction, various problems such as hole formation, incomplete hole cleaning, and long installation of the guide tube are inevitable, which leads to a large range of sediment, mud, segregated gravel, voids and other problems in the rock-embedded section at the bottom of some piles. To deal with the problems at the bottom of the pile in the rock-embedded section mentioned above, it is usually necessary to drill holes in the pile body and then use cement grouting to deal with the pile bottom problems.

[0003] For example, the double-tube rotary jet pile machine for repairing the defects of the rock-embedded section of the bored pile disclosed in the Chinese patent announcement number (CN216110548U) comprises a machine body and a drill rod inserted in a borehole, a rotary jet drill head extending to the defective area of ​​the rock-embedded section of the bored pile is provided at the bottom of the drill rod, a clean water conduit and an air conduit are provided inside the drill rod, and the clean water conduit and the air conduit are arranged along the axial extension of the drill rod; the clean water conduit is connected to a pressurizing device for conveying high-pressure water into the clean water conduit, and the air conduit is connected to an air compressor for conveying compressed air into the air conduit; an air nozzle and a clean water nozzle are provided on the rotary jet drill head, the air nozzle is connected to the air conduit, and the clean water nozzle is connected to the clean water conduit. When in use, the rotary jet drill head is lowered to the defective area of ​​the rock-embedded section of the bored pile, and the defective area is subjected to rotary jetting and slag return, the pressurizing device pressurizes the water into high-pressure water to sweep and cut the defective area, and the air compressor compresses the air into compressed air to return slag to the borehole, and the sediment in the defective area of ​​the pile rock-embedded section is cleaned up.

[0004] However, as in the above patent, there is still a problem of poor efficiency in repairing and locating defects in the rock-embedded section of the bored pile. The bored pile is usually located underground and has a limited aperture, and the rock-embedded section defect is located at a certain rock-embedded section in the bored pile. When repairing the defect, if the above method is adopted, it is generally necessary to directly insert it to the bottom and then gradually clean it from bottom to top to repair the defect. This not only takes a long time, but also is not convenient for quickly locating the defect position for accurate defect repair. Utility Model Content

[0005] In view of the shortcomings of the prior art, the present application provides a double-tube rotary jet pile machine for repairing defects in the rock-embedded section of bored piles, which has the advantages of defect positioning and accurate repair, and solves the problem of poor repair and positioning efficiency for defects in the rock-embedded section of bored piles.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solution: a double-tube rotary jet pile machine for repairing defects in rock-embedded sections of bored piles, comprising a machine body, a fixed platform is fixed on the left side of the machine body, a driving device is fixed on the left side of the fixed platform, a drill rod is provided inside the driving device, a positioning mechanism is provided on the outside of the drill rod, and a repair mechanism is provided at the bottom end of the drill rod;

[0007] The positioning mechanism includes a fixed sleeve, a transparent explosion-proof cover, four visual cameras, a connecting ring and a fill light. The fixed sleeve is sleeved on the outside of the drill pipe, the transparent explosion-proof cover is fixed to the outside of the fixed sleeve, the four visual cameras are distributed in a ring shape and fixed on the outer surface of the fixed sleeve, the connecting ring is fixed to the outer surface of the fixed sleeve and above the visual camera, and the fill light is fixed to the outside of the connecting ring.

[0008] By adopting this technical solution, the stability of the rotary jet pile driver and the convenience of operation are ensured through the setting of the fixed platform and the driving device. The visual camera and fill light of the positioning mechanism provide precise positioning and monitoring, thereby improving the accuracy and safety of the construction.

[0009] Furthermore, a plurality of fixing screw holes are provided on one side of the fixing sleeve and the drill rod opposite to each other, and the inner walls of the fixing screw holes are threadedly connected with fixing bolts.

[0010] By adopting this technical solution, the structural stability of the rotary jet pile driver is enhanced, making the equipment more solid during the construction process.

[0011] Furthermore, the number of the fill lights is no less than two, and they are evenly distributed and fixed along the outer surface of the connecting ring.

[0012] By adopting this technical solution, sufficient lighting can be provided even in insufficiently lit underground environments, thereby improving the imaging quality and positioning accuracy of visual cameras.

[0013] Furthermore, the repair mechanism includes a high-pressure water pump, a water supply pipe, a diverter pipe, an injection component, a high-pressure air pump, an air supply pipe and a connecting air pipe. The high-pressure water pump is fixed to the upper surface of the fixed platform, the water supply pipe is connected to the water outlet end of the high-pressure water pump, the diverter pipe is fixed to the inner wall of the drill pipe, and the top of the diverter pipe is connected to the bottom end of the water supply pipe. The injection component is arranged on the outside of the drill pipe to install different nozzles to jet and cut the defects of the embedded rock section. The high-pressure air pump is fixed to the front of the fixed platform, the air supply pipe is connected to the air outlet end of the high-pressure air pump, the connecting air pipe is fixed to the inner wall of the drill pipe, and the top of the connecting air pipe is connected to the air supply pipe.

[0014] By adopting this technical solution, the effective delivery and injection of high-pressure water flow is achieved, and the defective area is effectively cut and cleaned.

[0015] Furthermore, the injection component includes a water outlet pipe, a threaded pipe sleeve, a threaded water pipe, an explosion-proof bellows and a spray nozzle. A connecting groove is opened on the outer side of the drill rod. The water outlet pipe is fixed to the inner wall of the connecting groove, and the right end of the water outlet pipe is connected to the water supply pipe, the threaded pipe sleeve is connected to the left end of the water outlet pipe, the threaded water pipe is threadedly connected to the inner wall of the threaded pipe sleeve, one end of the explosion-proof bellows is connected to the left end of the threaded water pipe, and the other end of the explosion-proof bellows is connected to the spray nozzle.

[0016] By adopting this technical solution, an efficient water jet path is provided, and the strength and accuracy of the jet are enhanced.

[0017] Furthermore, a sealant is filled between the water outlet pipe and the side opposite to the threaded water pipe.

[0018] By adopting this technical solution, the sealing of the connection is improved, leakage of high-pressure water flow is prevented, and the injection efficiency is ensured.

[0019] Furthermore, a plurality of air spray holes are provided on the outer side of the drill rod, and an air outlet hole corresponding to the position of the air spray holes is provided on the outer side of the connecting air pipe.

[0020] By adopting this technical solution, precise injection of high-pressure gas is achieved, which helps to effectively clean up gravel and sediment in the borehole.

[0021] Furthermore, the water inlet end of the high-pressure water pump is connected to a water inlet pipe, and a stabilizing frame is fixed to the outer side of the diversion pipe and the connecting air pipe.

[0022] By adopting this technical solution, the stability and reliability of the entire system are enhanced, ensuring the continuous stability of long-term operations.

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

[0024] 1. The double-tube rotary jet pile machine for repairing defects in the rock-embedded section of the bored pile is equipped with a positioning mechanism. The fixed pipe sleeve is mounted on the outside of the drill pipe to provide structural fixation and stability. The transparent explosion-proof cover provides protection for the internal components to prevent external factors such as rock fragments from damaging the visual camera. Four visual cameras provide high-degree visual monitoring to ensure precise positioning of the drill pipe and accurate identification of defective areas. The fill light is evenly distributed and fixed along the outer surface of the connecting ring to provide sufficient light to ensure that the visual camera can clearly capture images even in an underground environment with insufficient light.

[0025] 2. The double-tube rotary jet pile machine for repairing the defects of the rock-embedded section of the bored pile is equipped with a repair mechanism, which performs high-pressure water jet cutting on the defective area and transports the water to the connecting air pipe through the air supply pipe to form an air spray hole to assist in removing the cut gravel and sediment. The injection part can be installed with different injection nozzles to adapt to different working conditions and repair needs, and the explosion-proof bellows can adjust the injection angle of the injection nozzle to improve the flexibility and efficiency of the operation. The positioning mechanism ensures the precise positioning and monitoring of the rotary jet pile machine, and the repair mechanism effectively cleans the defective area of ​​the rock-embedded section of the bored pile through the injection of high-pressure water and gas, thereby improving the efficiency and quality of the repair work. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0027] Figure 2 A schematic diagram of the positioning mechanism for this application;

[0028] Figure 3 A schematic diagram of the repair organization for this application;

[0029] Figure 4 For this application Figure 3 A schematic diagram of the structure enlargement in the middle;

[0030] Figure 5 This is a partial transverse cross-sectional view of the repair mechanism of this application.

[0031] In the figure: 1. machine body; 2. fixing platform; 3. driving device; 4. drill rod; 5. positioning mechanism; 51. fixing sleeve; 52. transparent explosion-proof cover; 53. visual camera; 54. connecting ring; 55. fill light; 56. fixing bolt; 6. repair mechanism; 61. high-pressure water pump; 62. water supply pipe; 63. diverter pipe; 64. injection part; 641. water outlet pipe; 642. threaded sleeve; 643. threaded water pipe; 644. explosion-proof bellows; 645. injection nozzle; 65. high-pressure air pump; 66. air supply pipe; 67. connecting air pipe; 68. air nozzle. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0033] See also Figure 1The double-tube rotary jet pile machine for repairing the defects of the rock-embedded section of the bored pile in this embodiment includes a body 1, a fixed platform 2 is fixed to the left side of the body 1, a driving device 3 is fixed to the left side of the fixed platform 2, a drill rod 4 is arranged inside the driving device 3, a positioning mechanism 5 is arranged outside the drill rod 4, and a repair mechanism 6 is arranged at the bottom end of the drill rod 4.

[0034] See also Figure 2 In order to repair and locate the defects of the rock-embedded section of the bored pile, the positioning mechanism 5 in this embodiment includes a fixed sleeve 51, a transparent explosion-proof cover 52, four visual cameras 53, a connecting ring 54 and a fill light 55. The fixed sleeve 51 is sleeved on the outside of the drill rod 4 to provide structural fixation and stability. The transparent explosion-proof cover 52 is fixed to the outside of the fixed sleeve 51. The four visual cameras 53 are distributed in an annular shape and fixed on the outer surface of the fixed sleeve 51. The transparent explosion-proof cover 52 provides protection for the internal components to prevent external factors such as rock fragments from damaging the visual cameras 53. The connecting ring 54 is fixed to the outer surface of the fixed sleeve 51 and is located above the visual cameras 53. The four visual cameras 53 provide 360-degree visual monitoring to ensure the precise positioning of the drill rod 4 and the accurate identification of the defective area. The fill light 55 is fixed to the outside of the connecting ring 54.

[0035] In this embodiment, a plurality of fixing screw holes are provided on the opposite side of the fixed sleeve 51 and the drill rod 4, and the inner wall of the fixing screw hole is threadedly connected with a fixing bolt 56, the number of the fill light 55 is not less than two, and they are evenly distributed and fixed along the outer surface of the connecting ring 54, and the fill light 55 is evenly distributed and fixed along the outer surface of the connecting ring 54 to provide sufficient light to ensure that the visual camera 53 can clearly capture images even in an underground environment with insufficient light. A plurality of fixing screw holes are provided on the opposite side of the fixed sleeve 51 and the drill rod 4, and the inner wall is threadedly connected with a fixing bolt 56 to enhance the stability of the overall structure.

[0036] See also Figure 3-5In order to repair the defects of the rock-embedded section of the bored pile, the repair mechanism 6 in this embodiment includes a high-pressure water pump 61, a water delivery pipe 62, a shunt pipe 63, an injection member 64, a high-pressure air pump 65, an air delivery pipe 66 and a connecting air pipe 67. The high-pressure water pump 61 is fixed to the upper surface of the fixed platform 2, and the water delivery pipe 62 is connected to the water outlet end of the high-pressure water pump 61. The drill rod 4 is driven to move into the bored pile hole through the driving device 3. The high-pressure water pump 61 provides high-pressure water flow, and the shunt pipe 63 is fixed to the inner wall of the drill rod 4, and the top end of the shunt pipe 63 is connected to the bottom end of the water delivery pipe 62. The jet component 64 is arranged on the outside of the drill rod 4 to install different nozzles for jet cutting of the defects in the rock-embedded section. The water is transported to the jet component 64 at the top of the drill rod 4 through the water supply pipe 62 to perform high-pressure water jet cutting on the defective area. The high-pressure air pump 65 is fixed to the front of the fixed platform 2, the air supply pipe 66 is connected to the air outlet end of the high-pressure air pump 65, and the shunt pipe 63 distributes the high-pressure water flow from the water supply pipe 62 to the jet component 64 to achieve comprehensive cleaning of the defective area. The connecting air pipe 67 is fixed to the inner wall of the drill rod 4, and the top of the connecting air pipe 67 is connected to the air supply pipe 66.

[0037] The injection component 64 includes a water outlet pipe 641, a threaded pipe sleeve 642, a threaded water pipe 643, an explosion-proof bellows 644 and a spray nozzle 645. A connecting groove is provided on the outer side of the drill rod 4. The water outlet pipe 641 is fixed to the inner wall of the connecting groove, and the right end of the water outlet pipe 641 is connected to the water supply pipe 62, the threaded pipe sleeve 642 is connected to the left end of the water outlet pipe 641, the threaded water pipe 643 is threadedly connected to the inner wall of the threaded pipe sleeve 642, one end of the explosion-proof bellows 644 is connected to the left end of the threaded water pipe 643, and the other end of the explosion-proof bellows 644 is connected to the spray nozzle 645. The injection component 64 can be installed with different spray nozzles 645 to adapt to different working conditions and repair requirements, and the explosion-proof bellows 644 can adjust the spray angle of the spray nozzle 645, effectively cleaning the defective area of ​​the rock-embedded section of the cast-in-place pile, thereby improving the efficiency and quality of the repair work.

[0038] In this embodiment, sealant is filled between the water outlet pipe 641 and the opposite side of the threaded water pipe 643, a plurality of air spray holes 68 are opened on the outer side of the drill rod 4, and an air outlet hole corresponding to the position of the air spray hole 68 is opened on the outer side of the connecting air pipe 67. The high-pressure air pump 65 provides high-pressure gas, which is transported to the connecting air pipe 67 through the air spray hole 68 through the air supply pipe 66 to assist in removing the cut gravel and sediment. The water inlet end of the high-pressure water pump 61 is connected to the water inlet pipe, and a stabilizing frame is fixed to the outer side of the diversion pipe 63 and the connecting air pipe 67.

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

[0040] (1) When used for defect repair and positioning of the rock-embedded section of the bored pile, the fixed sleeve 51 is sleeved on the outside of the drill rod 4 to provide structural fixation and stability. The transparent explosion-proof cover 52 provides protection for the internal components to prevent external factors such as rock fragments from damaging the visual camera 53. The four visual cameras 53 provide 360-degree visual monitoring to ensure the precise positioning of the drill rod 4 and the accurate identification of the defective area. The fill light 55 is evenly distributed and fixed along the outer surface of the connecting ring 54 to provide sufficient light to ensure that the visual camera 53 can clearly capture images even in an underground environment with insufficient light. A number of fixing screw holes are opened on the opposite side of the fixed sleeve 51 and the drill rod 4, and the inner wall is threaded with fixing bolts 56 to enhance the stability of the overall structure.

[0041] (2) When repairing the defects of the rock-embedded section of the bored pile, the driving device 3 drives the drill rod 4 into the bored pile hole, and the high-pressure water pump 61 provides high-pressure water flow, which is transported to the injection piece 64 at the top of the drill rod 4 through the water supply pipe 62, and the defective area is cut by high-pressure water jet. The diverter pipe 63 distributes the high-pressure water flow from the water supply pipe 62 to the injection piece 64 to achieve comprehensive cleaning of the defective area. The high-pressure air pump 65 provides high-pressure gas, which is transported to the connecting air pipe 67 through the air supply pipe 66 and passes through the air nozzle 68 to assist in removing the cut gravel and sediment. The injection piece 64 can be equipped with different injection nozzles 645 to adapt to different working conditions and repair requirements, and the explosion-proof bellows 644 can adjust the injection angle of the injection nozzle 645, effectively cleaning the defective area of ​​the rock-embedded section of the bored pile, thereby improving the efficiency and quality of the repair work.

Claims

1. A double-tube jet grouting machine for repairing defects in rock-embedded sections of bored piles, comprising a machine body (1), characterized in that: A fixing platform (2) is fixed on the left side of the machine body (1), a driving device (3) is fixed on the left side of the fixing platform (2), a drill rod (4) is provided inside the driving device (3), a positioning mechanism (5) is provided on the outside of the drill rod (4), and a repair mechanism (6) is provided at the bottom end of the drill rod (4); The positioning mechanism (5) comprises a fixed sleeve (51), a transparent explosion-proof cover (52), four visual cameras (53), a connecting ring (54) and a fill light (55); the fixed sleeve (51) is sleeved on the outside of the drill rod (4); the transparent explosion-proof cover (52) is fixed to the outside of the fixed sleeve (51); the four visual cameras (53) are distributed in an annular shape and fixed to the outer surface of the fixed sleeve (51); the connecting ring (54) is fixed to the outer surface of the fixed sleeve (51) and is located above the visual cameras (53); and the fill light (55) is fixed to the outside of the connecting ring (54).

2. The double-tube jet grouting machine for repairing the rock-embedded section defects of a bored pile according to claim 1 is characterized by: A plurality of fixing screw holes are provided on the opposite side of the fixing sleeve (51) and the drill rod (4), and fixing bolts (56) are threadedly connected to the inner walls of the fixing screw holes.

3. The double-tube jet grouting machine for repairing the rock-embedded section defects of a bored pile according to claim 1 is characterized by: The number of the fill light lamps (55) is no less than two, and they are evenly distributed and fixed along the outer surface of the connecting ring (54).

4. The double-tube jet grouting machine for repairing the rock-embedded section defects of a bored pile according to claim 1 is characterized in that: The repair mechanism (6) comprises a high-pressure water pump (61), a water supply pipe (62), a diverter pipe (63), an injection component (64), a high-pressure air pump (65), an air supply pipe (66) and a connecting air pipe (67); the high-pressure water pump (61) is fixed to the upper surface of the fixing platform (2); the water supply pipe (62) is connected to the water outlet end of the high-pressure water pump (61); the diverter pipe (63) is fixed to the inner wall of the drill rod (4); the top end of the diverter pipe (63) is connected to the bottom end of the water supply pipe (62); the injection component (64) is arranged on the outer side of the drill rod (4) to install different nozzles for jet cutting of the rock-embedded section defects; the high-pressure air pump (65) is fixed to the front side of the fixing platform (2); the air supply pipe (66) is connected to the air outlet end of the high-pressure air pump (65); the connecting air pipe (67) is fixed to the inner wall of the drill rod (4); and the top end of the connecting air pipe (67) is connected to the air supply pipe (66).

5. The double-tube jet grouting machine for repairing the rock-embedded section defects of a bored pile according to claim 4 is characterized in that: The injection component (64) comprises a water outlet pipe (641), a threaded pipe sleeve (642), a threaded water pipe (643), an explosion-proof bellows (644) and a spray nozzle (645). A connection groove is provided on the outer side of the drill rod (4). The water outlet pipe (641) is fixed to the inner wall of the connection groove, and the right end of the water outlet pipe (641) is connected to the water supply pipe (62). The threaded pipe sleeve (642) is connected to the left end of the water outlet pipe (641). The threaded water pipe (643) is threadedly connected to the inner wall of the threaded pipe sleeve (642). One end of the explosion-proof bellows (644) is connected to the left end of the threaded water pipe (643), and the other end of the explosion-proof bellows (644) is connected to the spray nozzle (645).

6. The double-tube jet grouting machine for repairing the rock-embedded section defects of a bored pile according to claim 5, characterized in that: Sealant is filled between the water outlet pipe (641) and the side opposite to the threaded water pipe (643).

7. The double-tube jet grouting machine for repairing the rock-embedded section defects of a bored pile according to claim 4, characterized in that: The outer side of the drill rod (4) is provided with a plurality of air spray holes (68), and the outer side of the connecting air pipe (67) is provided with air outlet holes corresponding to the positions of the air spray holes (68).

8. The double-tube jet grouting machine for repairing the rock-embedded section defects of a bored pile according to claim 4, characterized in that: The water inlet end of the high-pressure water pump (61) is connected to a water inlet pipe, and a stabilizing frame is fixed to the outside of the diversion pipe (63) and the connecting air pipe (67).

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