Hole cleaning device for PHC raking pile core

Abstract

The utility model provides a PHC raking pile core hole cleaning device, and relates to the technical field of pile core hole cleaning devices, the PHC raking pile core hole cleaning device is arranged in a pile core in a sliding mode, the PHC raking pile core hole cleaning device comprises a connecting base, the connecting base comprises a base body, a plurality of clamping holes are formed in the base body in a penetrating mode, and a connecting piece is fixedly arranged on the outer side of the base body. The connecting piece is fixedly connected with the output end of a driving source fixedly arranged outside the pile core so as to drive the connecting base to slide up and down, a plurality of sliding seats are detachably and fixedly arranged around the outer side of the seat body, and the tail ends of the sliding seats abut against the pile core when the seat body slides; the pipeline group comprises a slurry guide pipe, a compressed air guide pipe and a water inlet pipe, the slurry guide pipe, the compressed air guide pipe and the water inlet pipe are respectively inserted and fixedly arranged in the clamping holes, the compressed air guide pipe is externally connected with an air compressor, the water inlet pipe is externally connected with a water delivery pump, and the position, close to the tail end, of the slurry guide pipe is communicated with the tail end of the compressed air guide pipe; the problems that in the prior art, existing hole cleaning equipment is insufficient in adaptability, poor in cleaning effect and low in hole cleaning efficiency are solved.

Description

Technical Field

[0001] This utility model relates to the technical field of pile core cleaning devices, and in particular to a PHC inclined pile core cleaning device. Background Technology

[0002] PHC inclined piles are widely used in foundation treatment of building engineering due to their high bearing capacity, fast construction efficiency and stable quality. After the pile driving is completed, the mud, water and debris remaining inside the pile core need to be cleaned to ensure that the subsequent filling material is fully bonded to the pile body and improve the overall performance of the pile foundation.

[0003] Currently, conventional hole cleaning methods include high-pressure water flushing, compressed air purging, auger drilling, and manual cleaning. However, in inclined pile construction scenarios, these methods have significant drawbacks: high-pressure water flushing is prone to uneven water flow distribution due to the angle of the inclined pile, making it difficult to precisely control the flushing pressure and potentially causing localized damage to the pile wall; during compressed air purging, the airflow path inside the inclined pile deviates from the center, and mud is prone to secondary deposition due to gravity, making it difficult to completely remove viscous mud; auger drilling requires adjusting the drill rod angle to match the inclined pile angle, which is complex and requires frequent drill bit changes for large-diameter piles, resulting in low efficiency; manual cleaning poses safety risks and has limited cleaning depth and effectiveness, making it difficult to meet the needs of deep and long inclined piles. In addition, existing hole cleaning equipment generally lacks versatility. The diameter range of inclined piles is large, and traditional equipment has a fixed structure, making it unable to flexibly adapt to different pile diameters. Customized devices are required for specific pile diameters during construction, increasing construction costs. These problems restrict further improvement in the quality and efficiency of PHC inclined pile construction. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a PHC inclined pile core cleaning device, which solves the problems of insufficient compatibility, poor cleaning effect, and low cleaning efficiency of existing cleaning equipment.

[0005] According to an embodiment of this utility model, a PHC inclined pile core cleaning device is slidably disposed within the pile core, comprising:

[0006] A connecting base includes a base body with several through holes. A connector is fixedly installed on the outside of the base body. The connector is fixedly connected to the output end of a drive source fixed outside the pile core to drive the connecting base to slide up and down. Several sliding seats are detachably fixed around the outside of the base body. The ends of the sliding seats abut against the pile core when the base body slides.

[0007] The pipeline assembly includes a mud conduit, a compressed air conduit, and a water inlet pipe. The mud conduit, compressed air conduit, and water inlet pipe are respectively inserted into and fixedly installed in the clamping holes. The compressed air conduit is externally connected to an air compressor, and the water inlet pipe is externally connected to a water pump. The mud conduit is connected to the end of the compressed air conduit near its tail end.

[0008] The technical principle of this utility model is as follows: First, select mud pipes, air compressor pipes, and water inlet pipes of appropriate sizes according to the pile diameter. Pass the three pipes through their corresponding locking holes and fix them. Install a sliding seat of appropriate size on the outer wall of the base body. Drive the cleaning device to slowly descend from the pile core opening using a drive source. After the sliding seat contacts the core wall, continue lowering the device. Stop lowering when the bottom of the mud pipe is 30-40cm above the mud surface. Turn on the water pump to fill the pile body with water through the water inlet pipe. Then turn on the air compressor to input high-pressure air into the pile core and mix it with the mud. A slurry-air mixture with a density less than mud is formed in the mud pipe. Due to its lower specific gravity, the slurry-air mixture rises. A negative pressure is created at the bottom of the mud conduit, causing the mud below to rise under the influence of the negative pressure. Combined with the momentum of air pressure, the mud continuously replenishes itself. Once the mud reaches the conduit, it forms a gas-slurry mixture and continues to rise, creating flow. Because the inner cross-sectional area of ​​the mud conduit is much smaller than the annular cross-sectional area between the outer wall of the mud conduit and the pile wall, a reverse circulation with extremely high velocity and flow rate is formed. This carries the mud residue from the pile bottom out of the mud conduit. During the mud discharge process, continuous water injection into the pile core is necessary. As the mud residue is gradually discharged, a cleaning device should be simultaneously lowered using a drive source to maintain the distance between the bottom of the mud conduit and the surface of the mud residue. This cycle is repeated until all the mud residue is removed.

[0009] Furthermore, the connector includes a steel wire rope, and a plurality of connecting rings are arranged around the outside of the seat body, the connecting rings being fixedly connected to one end of the steel wire rope.

[0010] Furthermore, the drive source includes a crane, and the movable ends of the plurality of wire ropes are gathered and fixed at one point and fixedly connected to the hook of the crane.

[0011] Furthermore, the sliding seat includes a telescopic rod and a pulley. One end of the telescopic rod is fixedly connected to the outside of the seat body, and the other end is elastically connected to the pulley through a spring. The end of the pulley away from the telescopic rod abuts against the inner wall of the pile core.

[0012] Furthermore, each pair of sliding seats is arranged as a pair of sliding groups facing each other vertically, and the four pairs of sliding groups are arranged around and fixedly disposed in the four directions of the seat body.

[0013] Furthermore, an electric cylinder is fixedly installed on the telescopic rod, and the output end of the electric cylinder is coaxial with the telescopic rod, which can drive the telescopic rod to extend or retract.

[0014] Furthermore, the end of the compressed air duct is fixed and connected to a reserved connector, and the other end of the reserved connector is fixed and connected to the mud duct.

[0015] Furthermore, connecting protrusions are fixedly provided at the upper and lower ends of the card hole along the edge of the hole, and several fastening bolts are fixedly provided around the outer wall of the connecting protrusions. The fastening bolts pass through the connecting protrusions and are threadedly connected to them. The fastening bolts can be tightened to abut against the mud conduit, the compressed air conduit, and the water inlet pipe.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. By adopting a detachable sliding seat, the length of the sliding seat can be flexibly adjusted according to the pile diameter and abut against the pile wall, enabling the device to adapt to various pile diameter requirements. This ensures stable contact between the device and the pile wall during the hole cleaning process, avoids deviation of the hole cleaning path caused by equipment shaking, and significantly improves the versatility and construction safety of hole cleaning operations.

[0018] 2. The mud slurry conduit is connected to the compressed air conduit near the tail end, and high-pressure gas is input to form a high-speed gas-slurry mixture. Combined with the continuous water injection through the water inlet pipe to maintain the liquid level balance in the pile, a stable negative pressure environment is formed in the mud slurry conduit, which promotes the efficient discharge of mud and sludge from the bottom of the pile with the circulating fluid. This not only improves the mud carrying capacity, but also avoids the backflow of mud and sludge caused by the angle of the inclined pile in the traditional single hole cleaning method, and realizes the comprehensive cleaning of complex pile core structures. Attached Figure Description

[0019] Figure 1 This is a front cross-sectional view of the overall structure of an embodiment of this utility model.

[0020] Figure 2 This is a top-view cross-sectional view of the overall structure of an embodiment of this utility model.

[0021] Figure 3 This is a partial schematic diagram of the sliding seat according to an embodiment of the present utility model.

[0022] Figure 4 This is a schematic cross-sectional view of the connecting base and pipe assembly according to an embodiment of the present utility model.

[0023] In the above attached diagram: 1. Mud duct; 11. Compressed air duct; 111. Reserved joint; 12. Water inlet pipe; 2. Connecting base; 21. Base body; 22. Fastening bolt; 23. Connecting ring; 24. Steel wire rope; 25. Clamping hole; 26. Connecting protrusion; 3. Sliding seat; 31. Telescopic rod; 32. Pulley; 33. Spring; 34. Electric cylinder; 4. Pile core; 5. Hook. Detailed Implementation

[0024] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0025] like Figure 1-4 As shown in the figure, this utility model embodiment proposes a PHC inclined pile core cleaning device, which is slidably disposed inside the pile core 4. Its structure includes a connecting base 2, the connecting base 2 including a seat body 21. The seat body 21 is preferably a disc structure. A plurality of locking holes 25 are provided through the seat body 21. The diameter of the locking holes 25 can be set according to the actual situation. A connector is fixedly disposed on the outside of the seat body 21. The connector is fixedly connected to the output end of a drive source fixedly disposed outside the pile core 4 to drive the connecting base 2 to slide up and down. A plurality of sliding seats 3 are detachably fixedly disposed around the outside of the seat body 21. In this embodiment, the sliding seats 3 can be formed by several metal rods connected by pins and coaxially fixedly connected in sequence. The length of the sliding seats 3 needs to be selected and adjusted according to the diameter of the pile core 4, and is fixedly connected to the outside of the seat body 21 by a fixing method that is easy to disassemble, such as bolts, buckles or plugs, to ensure that the end of the sliding seat 3 can abut against the pile core 4 when the seat body 21 slides.

[0026] like Figure 1-4 As shown in the figure, this utility model embodiment proposes a PHC inclined pile core cleaning device, which also includes a pipeline assembly. The pipeline assembly includes a mud conduit 1, a compressed air conduit 11, and a water inlet pipe 12. The mud conduit 1, compressed air conduit 11, and water inlet pipe 12 are respectively inserted and fixedly installed in the clamping hole 25. The compressed air conduit 11 is externally connected to an air compressor, and the water inlet pipe 12 is externally connected to a water pump. The mud conduit 1 is connected to the end of the compressed air conduit 11 near its tail end. Specifically, the end of the compressed air conduit 11 is fixedly and connected to a reserved connector 111. The other end of the reserved connector 111 is fixedly and connected to the mud conduit 1. The distance between the reserved connector 111 and the end of the mud conduit 1 is preferably 30cm to ensure the slurry discharge effect. The reserved connector 111 can be connected to the mud conduit 1 and the compressed air conduit 11 by welding, sleeve, or clamping, etc., and ensures the airtightness of the connection.

[0027] The technical principle of this utility model is as follows: First, select mud pipe 1, air compressor pipe, and water inlet pipe of appropriate size according to the pile diameter. Pass the three pipes through the corresponding clamping holes 25 and fix them. Fix a sliding seat 3 of appropriate size on the outer wall of the base body 21. Drive the hole cleaning device to slowly descend from the pile core 4 opening through the drive source. After the sliding seat 3 contacts the core wall, continue to lower the device. Stop lowering when the bottom opening of the mud pipe 1 is 30-40cm above the mud surface. Turn on the water pump to fill the pile body with water through the water inlet pipe. Then turn on the air compressor to input high-pressure air into the pile core 4 and mix it with the mud. A slurry-air mixture with a density less than that of mud is formed in the mud pipe 1. The slurry-air mixture rises because of its lower specific gravity. A negative pressure is created at the bottom of the mud conduit 1. The mud below rises under the action of the negative pressure and is continuously replenished under the combined action of air pressure and momentum. The mud and gas in the mud conduit 1 form a gas-slurry mixture and continue to rise, thus forming a flow. Because the inner cross-sectional area of ​​the mud conduit 1 is much smaller than the annular cross-sectional area between the outer wall of the mud conduit 1 and the pile wall, a reverse circulation with extremely high flow velocity and flow rate is formed. The mud and sludge at the bottom of the pile are reversed out of the mud conduit 1 and discharged outside the mud conduit 1. During the discharge of mud, water needs to be continuously injected into the pile core 4. As the mud and sludge are gradually discharged, the hole cleaning device should be lowered simultaneously through the drive source to maintain the distance between the bottom of the mud conduit 1 and the surface of the mud and sludge. The operation is repeated in this way until all the mud and sludge are removed.

[0028] By adopting a detachable sliding seat 3, the length of the sliding seat 3 can be flexibly adjusted according to the pile diameter and fit tightly against the pile wall, enabling the device to adapt to various pile diameter requirements. At the same time, it ensures stable contact between the device and the pile wall during the cleaning process, avoiding deviation of the cleaning path caused by equipment shaking, and significantly improving the versatility and construction safety of the cleaning operation. The mud slurry conduit 1 is connected to the compressed air conduit 11 near the tail end, and high-pressure gas is input to form a high-speed gas-slurry mixture flow. Combined with the continuous water injection through the water inlet pipe 12 to maintain the liquid level balance in the pile, a stable negative pressure environment is formed in the mud slurry conduit 1, which promotes the efficient discharge of mud and sludge from the pile bottom with the circulating fluid. This not only improves the mud carrying capacity, but also avoids the backflow of mud and sludge caused by the angle of the inclined pile in the traditional single cleaning method, realizing the comprehensive cleaning of the complex pile core 4 structure.

[0029] like Figure 1-4As shown, in another embodiment, the connecting member may further include synthetic fiber ropes (such as nylon, aramid, or ultra-high molecular weight polyethylene), telescopic hydraulic or electric push rods, chains, or other mechanisms that can drive the connecting base 2 to move linearly up and down by connecting to the output end of the drive source. Similarly, the drive source includes linear motors, pneumatic cylinders, hydraulic cylinders, or other mechanisms whose output ends can move linearly, thereby driving the connecting base 2 to slide up and down. In this embodiment, the connecting member is set as a steel wire rope 24. The steel wire rope 24 has the characteristics of high strength, good durability, and low cost, and is more suitable for the cleaning environment of the pile core 4. A plurality of connecting rings 23 are arranged around the outer side of the base 21. In this embodiment, there are four connecting rings 23, which are orthogonally and symmetrically fixed in four directions on the outer side of the base 21. Each connecting ring 23 is fixedly connected to one end of the wire rope 24. The connecting rings 23 facilitate the quick fixing and disassembly of the wire rope 24 and make the connecting base 2 more stable during sliding. At the same time, the driving source is a crane. The movable ends of the multiple wire ropes 24 are gathered and fixed in one place and fixedly connected to the hook 5 of the crane. The crane can adjust the lifting angle according to the lifting and lowering of the connecting base 2, which has greater applicability.

[0030] like Figure 1-4 As shown, in another embodiment, the sliding seat 3 further includes a telescopic rod 31 and a pulley 32. One end of the telescopic rod 31 is perpendicular to the outside of the seat body 21 and fixedly connected thereto. The other end is elastically connected to the pulley 32 via a spring 33. The end of the pulley 32 facing away from the telescopic rod 31 abuts against the inner wall of the pile core 4. A limit post is fixedly provided at the end of the telescopic rod 31. The limit post is surrounded by the spring 33 to prevent the spring 33 from shifting during the telescopic process. In this embodiment, the telescopic rod 31 is preferably a telescopic rod with strong damping during telescopic movement, such as a pneumatic / hydraulic damping telescopic rod or a knob / latch locking telescopic rod, so that the telescopic rod 31 is not easily changed after the length is adjusted. To further enhance the vertical sliding of the connecting base 2... To improve stability, each pair of sliding seats 3 is arranged vertically opposite each other as a sliding group. Preferably, four pairs of sliding groups are arranged symmetrically around and fixed in four orthogonal directions on the side wall of the base 21. Through the above improvements, the length of the sliding seat 3 can be adjusted more flexibly for different pile diameters, and the pile core 4 can be adapted without disassembly. At the same time, the sliding friction of the sliding seat 3 is converted into rolling friction by the pulley 32 abutting against the core wall, reducing the resistance when the connecting base 2 slides up and down. The spring 33 can continuously provide adaptive support and buffer for the pulley 32, so that the pulley 32 always abuts against the core wall. The sliding groups around in four directions can provide all-round and multi-level support for the connecting base 2, so that the connecting base 2 can remain stable in different working conditions such as sliding and vibration.

[0031] like Figure 3 As shown, in another embodiment, an electric cylinder 34 is further fixedly installed on the telescopic rod 31. The output end of the electric cylinder 34 is coaxial with the telescopic rod 31. The electric cylinder 34 can drive the telescopic rod 31 to extend and retract precisely without manual adjustment, so that the pulley 32 is in the optimal position when it abuts against the core wall.

[0032] like Figure 1-4 As shown, in another embodiment, further, connecting protrusions 26 are fixedly provided along the edge of the upper and lower ends of the card hole 25, and the connecting protrusions 26 have an annular structure. A plurality of fastening bolts 22 are fixedly provided around the outer wall of the connecting protrusions 26. In this embodiment, the number of fastening bolts 22 is set to 4. The fastening bolts 22 pass through the connecting protrusions 26 and are threadedly connected to them. The fastening bolts 22 can be tightened to abut against the mud conduit 1, the compressed air conduit 11 and the water inlet pipe 12, thereby realizing the tightness control of the mud conduit 1, the compressed air conduit 11 and the water inlet pipe 12.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A PHC inclined pile core cleaning device, slidably disposed within the pile core (4), characterized in that, include: A connecting base (2) is provided, the connecting base (2) includes a base body (21), a plurality of slots (25) are provided through the base body (21), a connector is fixedly provided on the outside of the base body (21), the connector is fixedly connected to the output end of a drive source fixedly provided outside the pile core (4) to drive the connecting base (2) to slide up and down, and a plurality of sliding seats (3) are detachably fixedly provided around the outside of the base body (21), the end of the sliding seat (3) abuts against the pile core (4) when the base body (21) slides; The pipeline assembly includes a mud conduit (1), a compressed air conduit (11), and a water inlet pipe (12). The mud conduit (1), the compressed air conduit (11), and the water inlet pipe (12) are respectively inserted into and fixed in the clamping hole (25). The compressed air conduit (11) is connected to an air compressor, and the water inlet pipe (12) is connected to a water pump. The mud conduit (1) is connected to the end of the compressed air conduit (11) near its tail end.

2. The PHC inclined pile core cleaning device as described in claim 1, characterized in that: The connector includes a steel wire rope (24), and a plurality of connecting rings (23) are arranged around the outside of the seat (21), and the connecting rings (23) are fixedly connected to one end of the steel wire rope (24).

3. The PHC inclined pile core cleaning device as described in claim 2, characterized in that: The drive source includes a crane, and the movable ends of a plurality of wire ropes (24) are gathered and fixed at one point and fixedly connected to the hook (5) of the crane.

4. The PHC inclined pile core cleaning device as described in claim 1, characterized in that: The sliding seat (3) includes a telescopic rod (31) and a pulley (32). One end of the telescopic rod (31) is fixedly connected to the outside of the seat body (21), and the other end is elastically connected to the pulley (32) through a spring (33). The end of the pulley (32) away from the telescopic rod (31) abuts against the inner wall of the pile core (4).

5. The PHC inclined pile core cleaning device as described in claim 4, characterized in that: Each pair of sliding seats (3) is arranged as a pair of sliding groups, and the four pairs of sliding groups are arranged around and fixed in the four directions of the seat body (21).

6. The PHC inclined pile core cleaning device as described in claim 4, characterized in that: An electric cylinder (34) is also fixedly installed on the telescopic rod (31). The output end of the electric cylinder (34) is coaxial with the telescopic rod (31), and the electric cylinder (34) can drive the telescopic rod (31) to extend and retract.

7. The PHC inclined pile core cleaning device as described in claim 1, characterized in that: The end of the compressed air duct (11) is fixed and connected to a reserved connector (111), and the other end of the reserved connector (111) is fixed and connected to the mud duct (1).

8. The PHC inclined pile core cleaning device as described in claim 1, characterized in that: The upper and lower ends of the card hole (25) are fixedly provided with connecting protrusions (26) along the edge of the hole. Several fastening bolts (22) are fixedly provided around the outer wall of the connecting protrusions (26). The fastening bolts (22) pass through the connecting protrusions (26) and are threadedly connected to them. The fastening bolts (22) can be tightened to abut against the mud conduit (1), the compressed air conduit (11) and the water inlet pipe (12).

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