Pumping cleaning device for hollow pipe pile cleaning

Abstract

The invention discloses a pumping and cleaning device for cleaning hollow pipe piles, comprising: a spiral pumping member, comprising a rotating shaft and spiral blades arranged on the outer surface of the rotating shaft, which can be driven to be inserted into the hollow pipe pile and can be driven to rotate; a brush assembly is used to brush the inner wall of the hollow pipe pile; the invention adopts the principle of a spiral pump, and when in use, the spiral blades are driven to pump out soil and other debris in the pipe pile, and the residual debris is taken out when the pile is pulled out later; at the same time, the brushing assembly on the same equipment is used to brush and clean the pile, and the conditions for pouring concrete are met. The overall structure is relatively simple, and the operator only needs to align the spiral pumping member with the pipe pile to quickly complete the cleaning and washing work, without the need for manual pressure application, and the operation is labor-saving and easy, and the efficiency is significantly improved, thereby reducing the labor cost and improving the construction efficiency.

Description

Technical Field

[0001] The invention relates to a construction accessory equipment, in particular to a pumping and cleaning device for cleaning hollow pipe piles. Background Art

[0002] According to the construction process, before earth excavation, prestressed pipe piles are usually pressed into the soil layer to a set depth. It is difficult to prevent dirt and other debris from entering the interior of the pipe piles during the later construction process, especially during earth excavation, when more dirt enters the interior of the prestressed hollow pipe piles. Before the subsequent construction process, the interior of the pile hole core needs to be cleaned before subsequent construction can be carried out. In the prior art, the commonly used practice is to manually use manual tools to dig out the piles, which is inefficient and extremely laborious, and will lead to an extension of the construction period. The main thing is that after the impurities are removed, the inner wall of the hollow pipe pile needs to be cleaned to meet the conditions for pouring concrete, which has a generally low construction efficiency.

[0003] Therefore, a simple and efficient method for cleaning pipe piles is needed to save construction costs such as manpower and relatively shorten the construction period. Summary of the invention

[0004] In view of this, an object of the present invention is to provide a pumping cleaning device for cleaning hollow pipe piles, which has a simple structure, is easy to operate, reduces labor costs, and thus improves construction efficiency.

[0005] The pumping cleaning device for cleaning hollow pipe piles of the present invention comprises:

[0006] The spiral pumping member includes a rotating shaft and spiral blades arranged on the outer surface of the rotating shaft, which can be driven to be inserted into the hollow pipe pile and driven to rotate;

[0007] The brush assembly is used for brushing the inner wall of the hollow pipe pile.

[0008] Furthermore, the front end of the rotating shaft is provided with a tapered tip for convenient insertion into the hollow pipe pile;

[0009] The brush assembly is arranged on the conical tip in a manner that it can be extended or retracted, and includes:

[0010] A wire brush is used to scrub the inner wall of the hollow pipe pile;

[0011] The brush seat is used for installing a wire brush and can be driven to slide inside the conical tip. The sliding movement can drive the wire brush to extend out of the conical tip or retract into the conical tip.

[0012] Furthermore, the rotating shaft is a hollow shaft, a core shaft is coaxially arranged inside the hollow shaft, and the core shaft can be driven to reciprocate along the axial direction. The brush seat is rod-shaped and the tail end is hingedly matched with the core shaft.

[0013] Furthermore, a receiving channel for receiving the brush assembly is provided in the conical tip, the receiving channel is communicated with the hollow structure of the rotating shaft and has a brush opening on the conical surface of the conical tip, and when the core shaft moves up and down, the brush assembly is driven to move along the receiving channel so that the wire brush extends out of the brush opening or completely enters the receiving channel.

[0014] Furthermore, the brush holder comprises a front rod and a rear rod, the front rod is provided with an impeller and the front rod and the rear rod are rotatably matched, and the rear rod is hinged to the core shaft;

[0015] The hollow of the rotating shaft can be passed through water or a mixed fluid of air and water at a set pressure to clean the inner wall of the hollow pipe pile; and the passed water or the mixed fluid of air and water drives the impeller so that the front end rod drives the wire brush to rotate and brush the inner wall of the hollow pipe pile.

[0016] Furthermore, the accommodating channel is perpendicular to the conical surface of the conical tip, and the upper wall of the tail section of the accommodating channel is inclined upward.

[0017] Further, the rotating shaft extends upward and is rotatably matched with a mounting seat and is mounted through the mounting seat; the mounting seat is located between an upper annular support plate and a lower annular support plate fixedly arranged on the rotating shaft and is rotatably supported by the upper annular support plate and the lower annular support plate;

[0018] An upper dynamic seal and a lower dynamic seal are formed between the inner circle of the mounting seat and the outer circle of the rotating shaft, and an annular water channel is formed between the upper seal and the lower seal. The hollow of the rotating shaft is connected to the annular water channel, and the mounting seat is provided with an inlet water channel connected to the annular water channel.

[0019] Furthermore, the front end rod is formed by a plurality of rod segments that are hingedly connected in sequence, the impeller is arranged on a front rod segment, and the rear rod segment is rotatably matched with the rear end rod;

[0020] The rear end rod is cylindrical, the rear section of the front end rod is sleeved in the rear end rod, and two annular protrusions are provided at both ends of the rear end rod and the rear end rod, and the rear end rod and the rear end rod are rotated together through a water-lubricated bearing.

[0021] Furthermore, the core shaft is driven by a core shaft driving motor to achieve up and down movement; the core shaft driving motor is a hollow motor and is fixedly installed on the upper end of the rotating shaft, and a nut is provided at its power output end for transmission cooperation. The core shaft extends upward through a thread and cooperates with the nut and can be driven to move reciprocally up and down.

[0022] Furthermore, a motor mounting seat is fixedly provided at the upper end of the rotating shaft, and the motor mounting seat forms a hollow bracket for mounting the motor upwards and a hollow shaft neck for inserting into the hollow of the rotating shaft downwards, the hollow shaft neck dynamic sealing sleeve is fitted over the core shaft, and a shaft shoulder formed between the hollow shaft neck and the hollow bracket forms a static seal with the upper end face of the rotating shaft.

[0023] The beneficial effects of the present invention: the pumping and cleaning device for cleaning hollow pipe piles of the present invention is a cleaning equipment applied to hollow pipe piles, and adopts the principle of a spiral pump to drive the spiral blades to pump out the soil and other debris in the pipe piles, and take out the residual debris when pulling them out later; at the same time, the brushing components on the same equipment are used to brush and clean, and the conditions for pouring concrete are met. The overall structure is relatively simple, and the operator only needs to align the spiral pumping part with the pipe pile to quickly complete the cleaning and washing work, without the need for manual pressure application, and the operation is labor-saving and easy, the efficiency is significantly improved, and the labor cost is reduced, thereby improving the construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0025] Figure 1 It is a schematic diagram of the structure of the present invention;

[0026] Figure 2 for Figure 1 View along direction A;

[0027] Figure 3 It is a structural diagram of a spiral pumping member with a cleaning brush according to the present invention;

[0028] Figure 4 for Figure 3 Enlarged view of point B;

[0029] Figure 5 for Figure 3 Enlarged view of point B (brush assembly retracted);

[0030] Figure 6 This is the matching diagram of the front end rod and the rear end rod;

[0031] Figure 7 for Figure 3 Enlarged view of point C. DETAILED DESCRIPTION

[0032] As shown in the figure: the structure of the hollow pipe pile cleaning equipment of the present invention is used for explanation, and the pumping cleaning device for hollow pipe pile cleaning of this embodiment includes:

[0033] The spiral pumping member includes a rotating shaft 1 and a spiral blade 2 arranged on the outer surface of the rotating shaft 1, which can be driven to be inserted into the hollow pipe pile and driven to rotate;

[0034] The brush assembly 18 is used to brush the inner wall of the hollow pipe pile;

[0035] The spiral pumping member can pump out the dirt and other debris in the pipe pile upward by driving the spiral blade 2, and can also take out the residual debris when it is pulled out later. The outer diameter of the spiral blade should be as close as possible to the inner hole diameter of the pipe pile to ensure that it is clean. It will not be repeated here. The driving method generally uses a motor as the driving source. Of course, an engine can also be used.

[0036] When in use, the device also needs to be driven up and down by a linear drive assembly, and the linear drive assembly can be an existing component that can drive the spiral pumping member to form an up and down linear motion, such as a screw nut structure or a continuous hydraulic structure, which can achieve the purpose and will not be repeated here;

[0037] The brush assembly generally has a brush for scrubbing, which can be arranged on a rotating shaft. The brush contacts the inner wall of the hollow pipe pile and forms a scrubbing action driven by the rotating shaft.

[0038] In this embodiment, the front end of the rotating shaft 1 is provided with a conical tip 13 for convenient insertion into the hollow pipe pile, so as to facilitate the spiral pumping element to enter the interior of the pipe pile. The bottom diameter of the conical tip should be close to the outer diameter of the spiral blade, so as to facilitate the entry of the spiral blade.

[0039] The extending or retracting mode is provided on the conical tip 13, including:

[0040] The wire brush 1801 is used for brushing the inner wall of the hollow pipe pile;

[0041] The brush seat is used to install a wire brush and can be driven to slide in the conical tip 13. The sliding can drive the wire brush to extend out of the conical tip or retract into the conical tip. Of course, a space for accommodating the brush assembly needs to be provided in the conical tip so that the brush seat can move back and forth to drive the wire brush to slide out for cleaning and retract. Of course, the front end of the brush that slides out should be able to brush the inner wall of the hollow pipe pile. There are requirements for the length, which will not be repeated here.

[0042] In this structure, after the spiral pumping element is inserted into the hollow pipe pile to remove the impurities inside, the brush holder is driven to extend the brush to brush the inner wall to achieve the purpose of cleaning;

[0043] The brush holder can be driven manually or electrically. Of course, an operator channel is required, which will not be described in detail here.

[0044] In this embodiment, the rotating shaft 1 is a hollow shaft, and a core shaft 19 is coaxially arranged inside the hollow shaft. The core shaft 19 can be driven to reciprocate along the axial direction. The brush seat is rod-shaped and the tail end is hinged with the core shaft. As shown in the figure, the brush seat is located in the conical tip 13, and the reciprocating movement of the core shaft 19 drives the brush seat to reciprocate, thereby driving the wire brush to complete the exposure and retraction action. The structure is simple and easy to operate.

[0045] In this embodiment, a accommodating channel 1301 for accommodating a brush assembly is provided in the conical tip 13. The accommodating channel 1301 is communicated with the hollow structure of the rotating shaft and has a brush opening on the conical surface of the conical tip. When the core shaft moves up and down, the brush assembly is driven to move along the accommodating channel so that the wire brush extends out of the brush opening or completely enters the accommodating channel; as shown in the figure, the brush opening has a trumpet-mouth structure to ensure the smooth entry and exit of the wire bristles; in fact, the conical tip and the rotating shaft can be integrally formed or assembled and fixed to ensure the sealing and strength of the channel, which will not be repeated here.

[0046] In this embodiment, the brush holder includes a front end rod 1802 and a rear end rod 1803, the front end rod 1802 is provided with an impeller 1804 and the front end rod 1802 and the rear end rod 1803 are rotatably matched, and the rear end rod 1803 is hinged to the core shaft 19; as shown in the figure, the impeller adopts a spiral impeller, which is not repeated here; the lower end of the core shaft 19 is provided with a hinged ear 1901, which is used to be hinged with the support ear provided on the rear end cover.

[0047] The hollow 101 of the rotating shaft 1 can be passed with water of set pressure or a mixed fluid of air and water to clean the inner wall of the hollow pipe pile; and the passed water or the mixed fluid of air and water drives the impeller so that the front end rod drives the wire brush to rotate and scrub the inner wall of the hollow pipe pile; as shown in the figure, when the water flow or the mixture of air and water with a set pressure enters from the hollow of the hollow shaft and rushes out from the brush opening through the accommodating channel, it drives the impeller and the front end rod to rotate, thereby driving the wire brush to rotate, and combined with the rotation of the rotating shaft, the bristles rotate and revolve, eliminating dead corners for scrubbing and achieving comprehensive scrubbing and cleaning work; as shown in the figure, the brush assembly 18 is evenly distributed in a circumferential direction, and the revolution can form scrubbing, which is further combined with the rotation to achieve cleaning, and at the same time, the fluid rushing out from the brush opening will also clean the inner wall.

[0048] In this embodiment, the accommodating channel 1301 is perpendicular to the conical surface of the conical tip, which means that the upper wall of the tail section of the accommodating channel 1301 and the accommodating channel is inclined upward; the upper wall is inclined upward to avoid interference and jamming of the rear end rod of the brush holder during the upward movement of the core shaft 19, forming a smooth sliding structure; the structure that the accommodating channel is perpendicular to the conical surface of the conical tip makes the accommodating channel generally inclined upward, which is convenient for operation to avoid jamming, and at the same time, the inner wall of the hollow pipe pile can also be fully cleaned;

[0049] The front end rod 1802 is formed by a plurality of rod segments that are hingedly connected in sequence. As shown in the figure, the front end rod includes the first rod segment 1802a, the second rod segment 1802b and the third rod segment 1802c from front to back, wherein the first rod segment is provided with an impeller (the impeller is provided at a rod segment near the front), the impeller is a spiral impeller, and the impeller rotation direction makes the rotation direction under the impact of the fluid be such that the first rod segment has a tendency to move toward the brush opening direction, and the spiral characteristics are used to make the connecting rod segments stretch quickly, so that the wire brush is quickly extended; the rod segment near the back (the third rod segment) is rotationally matched with the rear end rod;

[0050] The rear end rod 1803 is cylindrical, the third rod segment 1802c is internally sleeved in the rear end rod and two annular protrusions (removable or integrally formed) are provided at both ends of the third rod segment and the rear end rod to form an axial limit; the third rod segment and the rear end rod are rotationally matched through a water-lubricated bearing; as shown in the figure, the water-lubricated bearing is an I-shaped cylinder, which is externally sleeved on the third rod segment and the flanges at both ends cover the two ends of the rear end rod to form good lubrication.

[0051] In this embodiment, the linear drive assembly includes a dynamic support beam 9 that can be driven to move up and down with a single degree of freedom, and the tail end of the rotating shaft 1 is rotationally matched with the dynamic support beam 9 with a single degree of freedom; the single degree of freedom rotational match means that the axial direction is restricted and cannot move, and the rotational match only has freedom in rotation. The rotational match needs to be set through bearing matching, and the upper and lower parts need to have step or end cover and other limiting measures, which are all conventional mechanical structures and will not be repeated here.

[0052] The rotating shaft 1 extends upward and is rotatably matched with a mounting seat 23 and is mounted on the dynamic support beam 9 through the mounting seat 23; the mounting seat 23 is located between the upper annular support plate 102 and the lower annular support plate 103 fixedly arranged on the rotating shaft 1 and is rotatably supported by the upper annular support plate 102 and the lower annular support plate 103, and a sliding bearing is arranged on the sliding surface, generally using a carbon powder filled polytetrafluoroethylene material; for the convenience of installation, the upper annular support plate 102 is detachably arranged on the rotating shaft, as shown in the figure, and the installation purpose is achieved by radially tightening bolts, which will not be repeated here;

[0053] An upper dynamic seal 2303 and a lower dynamic seal 2304 are formed between the inner circle of the mounting seat 23 and the outer circle of the rotating shaft 1. The upper dynamic seal 2303 and the lower dynamic seal 2304 are formed by polytetrafluoroethylene sealing rings or rubber sealing rings, and multiple of them can be axially distributed to ensure reliable sealing; and an annular water channel 2301 is formed between the upper seal and the lower seal, and the hollow 101 of the rotating shaft 1 is connected to the annular water channel 2301 (through a middle through hole), and the mounting seat 23 is provided with an inlet water channel 2302 connected to the annular water channel 2301; pressurized water or other fluids are introduced through the inlet water channel (as shown by the arrow, generally through a joint).

[0054] In this embodiment, the linear drive assembly also includes a driving screw that can be driven to rotate, and the driving screw cooperates with the dynamic support beam 9 to drive the dynamic support beam to move up and down with a single degree of freedom; as shown in the figure, the dynamic support beam 9 should be provided with a screw hole that cooperates with the screw (or a nut separately stipulated on the dynamic support beam). After the screw is driven to rotate, it can drive the dynamic support beam to move up and down, thereby driving the spiral pumping part to move up and down to complete the cleaning of the pipe piles.

[0055] In this embodiment, the spiral pumping member is located in the middle of the dynamic support beam 9, and two driving screws are arranged symmetrically to the spiral pumping member; the support of the two screws 3 and 4 is conducive to ensuring the balance of the dynamic support beam, so that the spiral pumping member can be smoothly driven to move up and down;

[0056] In this embodiment, a frame-type bracket is also included, including two vertical beams 10 and 11 arranged in parallel and vertically, a static support beam 8 supported on the upper ends of the two vertical beams 10 and 11, and a base 12 located at the bottom; the frame-type structure has a large bearing capacity and is easy to manufacture; a through hole for passing a spiral pumping member is provided on the base, which will not be described in detail here;

[0057] The rotating shaft 1 is driven to rotate by a first driving motor 5 arranged on a dynamic support beam 9. The housing of the first driving motor 5 is fixedly arranged on the dynamic support beam 9, and the rotating shaft is driven to rotate through a transmission component. The transmission component is generally a chain drive or a toothed belt drive. As shown in the figure, the power of the first driving motor 5 is output to a driving sprocket or a toothed belt pulley, and a driven sprocket or a toothed belt pulley is provided on the rotating shaft to realize transmission, which will not be repeated here; the lead screws 3 and 4 are driven to rotate by a second driving motor 6 arranged on the static support beam, and the two ends of the lead screws 3 and 4 are respectively rotatably matched with the static support beam 8 and the base 12 through bearings, and corresponding mechanical measures are provided to prevent axial movement. It is a conventional structure and will not be repeated here; the second driving motor is fixedly arranged on the static support beam, and the power output shaft drives the two lead screws.

[0058] The core shaft 19 is driven to reciprocate by a core shaft driving motor 20 fixedly set on the rotating shaft 1. The driving method can be to set a nut through transmission, and the core shaft and the nut thread cooperate; or the core shaft can set a nut, and the nut can be driven to move by a lead screw driven by a third motor. It will not be repeated here.

[0059] In this embodiment, the second drive motor 6 directly drives one lead screw 3 and drives another lead screw 4 through the transmission assembly 7;

[0060] Of course, the second drive motor may be two, each directly driving a lead screw, which is conducive to ensuring synchronization; or the second drive motor may be respectively driven by two transmission components 7 with the same transmission route to drive two lead screws, which is also conducive to ensuring synchronization;

[0061] As shown in the figure, the static support beam 8 is a box beam, and a transmission assembly 7 is provided inside, including a belt drive or a chain drive mechanism. The power output shaft of the second drive motor extends into the box beam and is directly connected to a screw for transmission, and the power is transmitted to another screw through the transmission assembly located in the box beam.

[0062] In this embodiment, the base 12 is provided with walking wheels 14; the frame bracket is provided with a locking device for locking the frame bracket to prevent movement; when in use, the device of the present invention is pushed to a specified position, so that the spiral pumping part is aligned with the pipe pile hole, the device is positioned by the locking device to prevent movement and start driving the spiral pumping part into the pipe pile for cleaning; the locking device can adopt a variety of structures, such as locking the walking wheels to prevent movement, or directly limiting the base, which will not be repeated here.

[0063] In this embodiment, the locking device includes a cutting rod 15 and a locking seat 16, and the locking seat 16 is fixedly arranged on the base 12. When locked, the cutting rod 15 passes through the locking hole on the locking seat 16 and is inserted into the ground near the hollow pipe pile to be cleaned; as shown in the figure, the cutting rod 15 passes through the locking seat 16 and is inserted into the ground to form a lock; of course, in order to ensure stable locking, auxiliary locking members 17 are also provided on the vertical beams 10 and 11, and the cutting rod 15 can be inserted into the auxiliary locking member 17 and the locking seat 16 from top to bottom, respectively. Two-point limit is formed to ensure the limit effect, which will not be repeated here; the auxiliary locking piece can be provided with a hole for inserting the cutting rod on the structure, which will not be repeated here; when walking is required, the cutting rod is pulled out and placed in the set position on the locking seat or the upper surface of the auxiliary locking piece; the locking seat 16 and the auxiliary locking piece 17 can be the same width as the base in the horizontal direction, the locking seat can also be formed integrally with the base, and the cutting rod 15 can be arranged in two in the horizontal direction to ensure the locking effect, which will not be repeated here.

[0064] In this embodiment, the spindle drive motor 20 is a hollow motor and is fixedly mounted on the upper end of the rotating shaft 1. A nut 21 is provided at its power output end for transmission cooperation. The spindle 19 extends upward through a thread and cooperates with the nut 21 and can be driven to reciprocate up and down.

[0065] A motor mounting seat 22 is fixedly provided on the upper end of the rotating shaft 1. The motor mounting seat 22 forms a hollow bracket for mounting the motor upwards and a hollow shaft neck for inserting the hollow rotating shaft downwards. The hollow shaft neck dynamic sealing sleeve is sleeved on the core shaft. The dynamic seal refers to the need to maintain the axial seal between the core shaft and the hollow shaft neck and the outside world when the core shaft 19 moves up and down. Generally, an elastic sealing ring such as polytetrafluoroethylene or a rubber ring is used, which will not be described here; and a static seal is formed between the hollow shaft neck and the hollow bracket and the upper end face of the rotating shaft. The static seal is generally achieved by a sealing gasket, which will not be described here.

[0066] When the present invention is used, the linear drive assembly is used to drive the dynamic support beam downward, and at the same time, the first drive motor drives the spiral pumping member to rotate (the rotation direction is the direction of screwing in). As the depth of entry increases, the spiral blades pump out dirt and other debris until no more debris is pumped out, and residual debris can be taken out when it is pulled out;

[0067] After a large amount of debris is cleaned up, the core shaft drive motor is turned on to drive the core shaft downward, pushing the brush assembly outward, and at the same time, a fluid with a certain pressure (water or a mixture of high-pressure gas and water) is turned on to generate an outward thrust on the impeller, causing the brush seat to stretch and have an outward tendency. At the same time, combined with the thrust of the core shaft, the brush is pushed outward, and the pressure fluid can also blow away dirt and other debris located at the brush opening; after extending, the inner wall of the hollow pipe pile is cleaned by the rotation of the wire brush (fluid drives the impeller) and the revolution of the rotating shaft.

[0068] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A pumping cleaning device for cleaning hollow pipe piles, characterized in that: include: The spiral pumping member includes a rotating shaft and spiral blades arranged on the outer surface of the rotating shaft, which can be driven to be inserted into the hollow pipe pile and driven to rotate; The brush assembly is used to brush the inner wall of the hollow pipe pile; The front end of the rotating shaft is provided with a conical tip for facilitating insertion into the hollow pipe pile; The brush assembly is arranged on the conical tip in a manner that it can be extended or retracted, and includes: Wire brush, used to scrub the inner wall of hollow pipe pile; A brush seat, used for mounting a wire brush and being driven to slide inside the conical tip, wherein the sliding movement can drive the wire brush to extend out of the conical tip or retract into the conical tip; The rotating shaft is a hollow shaft, a core shaft is coaxially arranged inside the hollow shaft, and the core shaft can be driven to reciprocate along the axial direction, and the brush seat is rod-shaped and the tail end is hingedly matched with the core shaft; The conical tip is provided with a receiving channel for receiving the brush assembly, the receiving channel is communicated with the hollow structure of the rotating shaft and has a brush opening on the conical surface of the conical tip, when the core shaft moves up and down, the brush assembly is driven to move along the receiving channel so that the wire brush extends out of the brush opening or completely enters the receiving channel; the brush holder includes a front end rod and a rear end rod, the front end rod is provided with an impeller and the front end rod and the rear end rod are rotatably matched, and the rear end rod is hinged to the core shaft; The hollow of the rotating shaft can be passed through water or a mixed fluid of air and water at a set pressure to clean the inner wall of the hollow pipe pile; and the passed water or the mixed fluid of air and water drives the impeller so that the front end rod drives the wire brush to rotate and brush the inner wall of the hollow pipe pile; The front end rod is formed by a plurality of rod segments hingedly connected in sequence, the impeller is arranged on a front rod segment, and the rear rod segment is rotatably matched with the rear end rod; The rear end rod is cylindrical, the rear section of the front end rod is sleeved in the rear end rod, and two annular protrusions are provided at both ends of the rear end rod and the rear end rod, and the rear end rod and the rear end rod are rotated together through a water-lubricated bearing.

2. The pumping cleaning device for hollow pipe pile cleaning according to claim 1 is characterized in that: The accommodating channel is perpendicular to the conical surface of the conical tip, and the upper wall of the tail section of the accommodating channel is inclined upward.

3. The pumping cleaning device for hollow pipe pile cleaning according to claim 1 is characterized in that: The rotating shaft extends upward and is rotatably matched with a mounting seat and is mounted through the mounting seat; the mounting seat is located between an upper annular support plate and a lower annular support plate fixedly arranged on the rotating shaft and is rotatably supported by the upper annular support plate and the lower annular support plate; An upper dynamic seal and a lower dynamic seal are formed between the inner circle of the mounting seat and the outer circle of the rotating shaft, and an annular water channel is formed between the upper seal and the lower seal. The hollow of the rotating shaft is connected to the annular water channel, and the mounting seat is provided with an inlet water channel connected to the annular water channel.

4. The pumping cleaning device for hollow pipe pile cleaning according to claim 1, characterized in that: The core shaft is driven by a core shaft driving motor to achieve up and down movement; the core shaft driving motor is a hollow motor and is fixedly installed on the upper end of the rotating shaft, and a nut is arranged at its power output end for transmission cooperation. The core shaft extends upward through a thread and cooperates with the nut and can be driven to move reciprocally up and down.

5. The pumping cleaning device for hollow pipe pile cleaning according to claim 1, characterized in that: A motor mounting seat is fixedly provided at the upper end of the rotating shaft. The motor mounting seat forms a hollow bracket for mounting the motor upwards and a hollow shaft neck for inserting into the hollow of the rotating shaft downwards. The hollow shaft neck dynamic sealing sleeve is fitted over the core shaft, and a shaft shoulder formed between the hollow shaft neck and the hollow bracket forms a static seal with the upper end face of the rotating shaft.

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