A deep pile foundation hole bottom slag cleaning device

Abstract

The utility model relates to the field of pile foundation construction equipment, specifically disclose a deep pile foundation hole bottom deslag device, include: support platform, fixed plate, flap, rotary tube, branch pipe, ring buckle seat, mixing chamber, reinforcing sleeve and adjusting pipe, the rotary tube can extend to the bottom of deep hole pile foundation and the diameter of the pipe orifice place reduces gradually to make its injection rate increase, and the bottom end of this rotary tube is provided with the branch pipe that sprays to the lower side, when the rotary tube rotates, the branch pipe can wash up the sediment at the hole bottom edge, and the slurry is back from the gap between the pile hole and the rotary tube, adjusting pipe can inject the adjusting slurry into the gap to improve the eddy current flow and flow rate of back slurry, prevent the big piece sediment from falling back, help the sediment to discharge, compared with the traditional grouting mode deslagging effect is better and can discharge the sediment in the bottom corner.

Description

Technical Field

[0001] This utility model belongs to the field of pile foundation construction equipment, and specifically relates to a device for cleaning slag at the bottom of deep pile foundation holes. Background Technology

[0002] During pile foundation construction, sediment will form at the bottom of the pile hole, so it is necessary to clean the pile hole. In traditional construction, a grout inlet pipe is usually placed in the pile foundation, and the sediment at the bottom of the hole is flushed out by the backflow of grout. However, for deeper pile foundations, the grout flow rate is slow, which will lead to a long construction process and the sediment may fall back to the bottom of the hole after being flushed up, resulting in repeated sedimentation and affecting the cleaning effect. In particular, the sediment in the corners of the bottom of the hole is more difficult to remove because it is located in a dead corner.

[0003] Patent document with application number "CN2017109556187" discloses a grouting and slag removal device and its removal method, including multiple slag removal pipes, each with a spiral section at its lower part, wherein the ends of the spiral sections of the slag removal pipes are distributed at different radii on the same center, and the upper end of the slag removal pipes is connected to a self-priming pump; it also includes grouting pipes, wherein the ends of the spiral sections of the grouting pipes are distributed at different radii on the same center, and each grouting pipe has a spiral section at its lower part, the grouting pipes are arranged between two slag removal pipes, and a pressure pump is connected to the grouting pipes. The pipeline of the pressure pump is connected to a mud pit, which achieves a spiral upward movement at the bottom of the pile hole, increasing the efficiency of slag removal; during the grouting process, it can also achieve a rotating grouting at the bottom. However, the structure in this prior art is too complex, and the spiral pipe occupies a large working space, which is not suitable for long and deep holes with small diameters. Furthermore, the impact force of the swirling flow is too large, which can easily damage well-developed geological layers and cause the pebble layer to collapse, and it is not easy to remove slag at the bottom corners of the hole. Utility Model Content

[0004] The purpose of this utility model is to provide a slag removal device for deep pile foundation holes, thereby overcoming the shortcomings of traditional grouting pipes in the grouting operation of long pile foundation holes, where the sediment at the bottom and bottom corners is not easy to be discharged and the slag removal effect is poor.

[0005] To achieve the above objectives, this utility model provides a deep pile foundation hole bottom cleaning device, including a support platform, on which a rotating pipe is installed; a ring seat is provided on the support platform, one end of the rotating pipe is rotatably connected to the ring seat, the other end of the rotating pipe extends downward toward the support platform with a gradually decreasing diameter and has a pipe opening, a branch pipe is provided at the other end of the rotating pipe, the end of the branch pipe extends to the side and downward of the rotating pipe, and an adjusting pipe is also installed on the ring seat, the adjusting pipe being parallel to and close to the rotating pipe.

[0006] Preferably, in the above technical solution, the top of the ring seat is provided with a mixing chamber, the bottom of the mixing chamber is provided with a central sleeve, the central sleeve can be inserted into the rotating tube from one end of the rotating tube and fit against the tube wall of the rotating tube, the central sleeve and the rotating tube can rotate relative to each other, the side of the mixing chamber is provided with two or more slurry inlet pipes, and the bottom of the mixing chamber and the connecting end of the central sleeve are provided with a second conical surface.

[0007] Preferably, in the above technical solution, the support platform is provided with a support plate, and an installation hole is provided on the support plate. The outer periphery of the ring buckle seat is provided with an outwardly protruding first limiting ring. One end of the ring buckle seat can pass through the installation hole, and the bottom of the first limiting ring can abut against the outer periphery of the installation hole.

[0008] Preferably, in the above technical solution, the support plate includes a fixed plate and a flip plate. The fixed plates are arranged near both ends of the support platform, and the fixed plates form a well opening. The bottom of the ring seat can pass through the well opening. There are two flip plates. One end of the flip plate is rotatably connected to the opposite end of the fixed plate. The other end of the flip plate has a semi-circular opening. When the two flip plates cover the well opening, the two semi-circular openings can close to each other to form the mounting hole.

[0009] Preferably, in the above technical solution, pull rods are provided on both sides of the flip plate, and the pull rods are located near the other end of the flip plate.

[0010] Preferably, in the above technical solution, the bottom of the ring seat is provided with a reinforcing sleeve, the adjusting tube is sleeved inside the reinforcing sleeve, and the end of the reinforcing sleeve is provided with a first conical surface.

[0011] Preferably, in the above technical solution, the ring seat is provided with a transmission chamber, the bottom of the transmission chamber is provided with a shaft hole, the rotating tube is rotatably fitted into the shaft hole, and a second limiting ring is provided on the outer periphery of one end of the rotating tube, the second limiting ring can abut against the bottom of the transmission chamber for limiting.

[0012] Preferably, in the above technical solution, a toothed ring is fitted at one end of the rotating tube, and the toothed ring is fixedly connected to the top of the second limiting ring by bolts; a detachable screw box is provided on the side of the ring seat, a drive motor is provided at the end of the screw box, a rotatable drive screw is provided inside the screw box, the end of the drive screw is connected to the drive shaft of the drive motor, and the drive screw and the toothed ring mesh with each other.

[0013] Preferably, in the above technical solution, the rotating tube includes two or more segmented tubes, and the two ends of each segmented tube are connected by threads.

[0014] Preferably, in the above technical solution, the rotating tube further includes a reducing tube, which is disposed at one end close to the rotating tube. The diameter of the reducing tube is larger than the diameter of the segment tube, and a third conical surface is provided at the connection end between the reducing tube and the segment tube.

[0015] Compared with existing technologies, this utility model has the following beneficial effects:

[0016] 1. The deep pile foundation hole bottom cleaning device of this utility model can extend to the bottom of the deep pile foundation through a rotating pipe, and the diameter of the pipe opening gradually decreases, thereby increasing the spraying speed. A branch pipe is set at the bottom of the rotating pipe to spray downwards. When the rotating pipe rotates, the branch pipe can flush up the sediment at the bottom edge of the hole, and the mud flows back from the gap between the pile hole and the rotating pipe. The regulating pipe can inject regulating mud into the gap to increase the eddy flow rate and velocity of the backflowing mud, prevent large pieces of sediment from falling back, and help the sediment to be discharged. Compared with the traditional grouting method, the cleaning effect is better and the sediment in the bottom corner can be discharged.

[0017] 2. After the sediment is removed, clean water can be introduced into the regulating pipe or the injection of regulating mud can be stopped to prevent the borehole wall from being excessively eroded and collapsing.

[0018] 3. The support platform is equipped with a support plate consisting of a fixed plate and a flip plate. The fixed plate provides a standing and operating position for the operator. The flip plate's flip structure facilitates the removal of the rotating tube and the ring buckle seat. The semi-circular opening at the edge of the flip plate, when closed, forms an installation hole, thereby installing and limiting the ring buckle seat.

[0019] 4. A reinforcing sleeve is provided at the bottom of the ring seat. The adjusting pipe can be fitted inside the reinforcing sleeve for reinforcement, thereby preventing excessive impact force on the adjusting pipe body caused by the mud vortex generated when the rotating pipe rotates, and preventing deformation and bending. The end of the reinforcing sleeve is provided with a first conical surface, which can reduce resistance when the mud surges back.

[0020] 5. The mixing chamber is equipped with two or more inlet pipes, which can increase the inlet pressure and the mud flow rate at the inlet of the rotating pipe. The bottom of the mixing chamber is equipped with a conical structure, which can guide the flow and prevent the mud from solidifying at the bottom of the mixing chamber. The sleeve can be inserted into the rotating pipe and the inner and outer walls fit together, which can seal the mud.

[0021] 6. The rotating tube is made of two or more segmented tubes connected by threads, which can be spliced ​​according to the hole depth. The rotating tube is driven by a screw and a gear ring, which can increase torque. The detachable screw box can be installed from the side, which is convenient for on-site disassembly and maintenance, and is more suitable for use in harsh working environments.

[0022] 7. A reducing pipe can also be installed at the top of the segment pipe. The connection end between the reducing pipe and the segment pipe is provided with a third conical surface, which can further increase the mud flow rate, thereby further improving the flushing effect. Attached Figure Description

[0023] Figure 1 This is a front view of a deep pile foundation hole bottom cleaning device.

[0024] Figure 2 This is a structural diagram of the support platform.

[0025] Figure 3 This is a partial sectional view of the rotating tube and the ring seat.

[0026] Figure 4 This is a partial cross-sectional view of the mixing chamber.

[0027] Figure 5 A structural diagram of another implementation of a deep pile foundation hole bottom cleaning device.

[0028] Explanation of key figure labels:

[0029] 100-Support platform, 120-Fixing plate, 130-Flip plate, 131-Semi-circular opening, 132-Tie rod, 140-Well opening, 150-Support frame;

[0030] 200-Rotating tube, 210-Pipe opening, 220-Second limiting ring, 230-Gear ring, 240-Segment tube;

[0031] 300 - Adjusting tube, 310 - Reinforcing sleeve, 311 - First conical surface;

[0032] 400-ring buckle seat, 410-first limit ring, 420-transmission chamber, 430-shaft hole, 440-screw box, 450-drive motor, 460-drive screw;

[0033] 500-branch pipe;

[0034] 600 - Mixing chamber, 610 - Central sleeve, 620 - Slurry inlet pipe, 630 - Second cone surface;

[0035] 700 - reducer, 710 - third conical surface. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0037] In the description of this utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "top surface", "bottom surface", "inner", "outer", "inner side", "outer side", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0038] In the description of this invention, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. Where the terms "first," "second," and "third" are used for descriptive purposes and to distinguish technical features, they should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the sequential relationship of the indicated technical features.

[0039] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The embodiments of this utility model will now be described based on its overall structure.

[0040] like Figures 1 to 4As shown, the deep pile foundation hole bottom cleaning device in this embodiment includes: a support platform 100, a fixing plate 120, a flap 130, a semi-circular opening 131, a tie rod 132, a wellhead 140, a support frame 150, a rotating pipe 200, a pipe opening 210, a second limiting ring 220, a toothed ring 230, a segmental pipe 240, an adjusting pipe 300, a reinforcing sleeve 310, a first conical surface 311, a ring seat 400, a first limiting ring 410, a transmission chamber 420, a shaft hole 430, a screw box 440, a drive motor 450, a drive screw 460, a branch pipe 500, a mixing chamber 600, a central sleeve 610, a grout inlet pipe 620, and a second conical surface 630.

[0041] The support platform 100 consists of a support frame 150 and a support plate. The support frame 150 is a rectangular frame structure. The support plate is welded to the top of the support frame 150. The support plate includes a fixed plate 120 and a flap 130. There are two fixed plates 120, which are respectively set near the two ends of the support platform 100. The two fixed plates 120 form a well opening 140. The bottom of the ring seat 400, the rotating tube 200, and the adjusting tube 300 can pass through the well opening 140. There are two flaps 130. One end of the flap 130 is rotatably connected to the opposite end of the two fixed plates 120. The other end of the flap 130 has a semi-circular opening 131. When the two flaps 130 cover the well opening 140, their edges can abut against the support frame 150. The semi-circular openings 131 can close to each other to form the mounting hole 110. A first limiting ring 410 protruding outwards is provided on the outer periphery of the ring seat 400. One end of the ring seat 400 can pass through the mounting hole. The bottom of the first limiting ring 410 can abut against the outer periphery of the mounting hole to suspend and fix the ring seat 400. Pull rods 132 are provided on both sides of the flap 130. The pull rods 132 are positioned near the other end of the flap 130 to facilitate opening the flap 130 during the hoisting and disassembly of the spiral tube. A transmission chamber 420 is provided inside the ring seat 400. A shaft hole 430 is opened at the bottom of the transmission chamber 420. The rotating tube 200 is rotatably fitted into the shaft hole 430. A second limiting ring 220 is provided on the outer periphery of one end of the rotating tube 200, and the end face of that end... The top surface of the second limiting ring 220 is higher than that of the second limiting ring 220. The second limiting ring 220 can abut against the bottom of the transmission chamber 420 for limiting. The other end of the rotating tube 200 extends downward toward the support platform 100 and gradually narrows in diameter at a distance of 2m from the lower end, and is provided with a pipe opening 210. A branch pipe 500 is provided above the pipe opening 210 at the other end of the rotating tube 200. The connection of the branch pipe 500 is located in the area of ​​the contraction surface, and the end of the branch pipe 500 extends to the side and downward of the rotating tube 200. A gear ring 230 is installed at one end of the rotating tube 200. A keyway is provided on the gear ring 230. A limiting block that engages with the keyway is provided on the side of one end of the rotating tube 200. The gear ring 230 is fixedly connected to the top of the second limiting ring 220 by bolts. A detachable screw box 440 is installed on the side of the seat 400. A drive motor 450 is installed at the end of the screw box 440. A rotatable drive screw 460 is installed inside the screw box 440. The end of the drive screw 460 is coaxially connected to the drive shaft of the drive motor 450. The drive screw 460 meshes with the gear ring 230. A reinforcing sleeve 310 is installed at the bottom of the ring seat 400. An adjusting tube 300 is fitted inside the reinforcing sleeve 310. The tube body of the reinforcing sleeve 310 is parallel to the tube body of the spiral tube. The lower end of the reinforcing sleeve 310 extends downward and is provided with a first conical surface 311. The lower end of the adjusting tube 300 extends outward from the lower end of the reinforcing sleeve 310. The upper end of the adjusting tube 300 bends and extends to the side of the ring seat 400.

[0042] In addition, a mixing chamber 600 is installed on the top of the ring seat 400, and a central sleeve 610 is provided at the bottom of the mixing chamber 600. The central sleeve 610 can be inserted into the rotating tube 200 from one end and fit against the tube wall of the rotating tube 200. The central sleeve 610 and the rotating tube 200 can rotate relative to each other. Two or more slurry inlet pipes 620 are provided on the side of the mixing chamber 600. A second conical surface 630 is provided between the bottom of the mixing chamber 600 and the connection end of the sleeve. A sealing ring can also be installed between the outer wall of the central sleeve 610 and the inner wall of the rotating tube 200 to further enhance the sealing performance.

[0043] In addition, the rotating pipe 200 includes two or more segmented pipes 240, and the two ends of each segmented pipe 240 are connected by a threaded structure, so that the segmented pipes 240 can be assembled according to the actual length of the pile foundation, and the pipe threads can be cut and processed on site as needed, which is convenient and quick.

[0044] In addition, such as Figure 5 As shown, the rotating tube 200 in this embodiment has another implementation method, namely, a reducing tube 700 is provided at the upper end of the spiral tube, the diameter of the reducing tube 700 is larger than the diameter of the segment tube 240, and a third conical surface 710 is provided at the connection end of the reducing tube 700 and the segment tube 240, which can further increase the mud flow rate.

[0045] Next, the working principle of the deep pile foundation hole bottom cleaning device in this embodiment will be described in detail so that those skilled in the art can better understand this utility model:

[0046] During use, the support platform 100 is erected at the opening of the pile hole. The adjusting pipe 300 and the ring seat 400 are installed together. The ring seat 400 and the rotating pipe 200 are hoisted into the installation hole using a crane. Then, multiple mud pumps are used to pump mud from the mud tank. Each hose is connected to the end of each slurry inlet pipe 620 and the adjusting pipe 300. The mud pumps are turned on and the drive motor 450 is turned on simultaneously. At this time, the rotating pipe 200 rotates while pumping mud. The mud enters the spiral pipe through the mixing chamber and is accelerated by the conical structure, then sprayed out from the pipe opening 210 and the end of the branch pipe 500. The mud sprayed from pipe 500 can flush up the sediment at the bottom edge of the pile hole and form a backflow mud. The mud sprayed from regulating pipe 300 can form a high-velocity and high-flow-rate mud flow in the narrow gap between rotating pipe 200 and pile hole, further increasing the vortex flow and velocity of the backflow mud, which is conducive to discharging the large sediment pieces that have risen to the halfway point. After the sediment has been basically discharged, clean water can be introduced into regulating pipe 300 or regulating pipe 300 can be closed to reduce the concentration and flow rate of backflow mud, thereby protecting the hole wall of the pile hole and preventing collapse or new sediment from falling.

[0047] In summary, the deep pile foundation bottom cleaning device of this utility model can extend to the bottom of the deep pile foundation through the rotating pipe 200, and the diameter of the pipe opening 210 gradually decreases, thereby increasing the spraying speed. Furthermore, a branch pipe 500 spraying downwards is provided at the bottom end of the rotating pipe 200. When the rotating pipe 200 rotates, the branch pipe 500 can flush up the sediment at the bottom edge of the hole, and the mud flows back from the gap between the pile hole and the rotating pipe. The regulating pipe 300 can inject regulating mud into the gap, thereby increasing the eddy flow rate and velocity of the backflowing mud, preventing large pieces of sediment from falling back, and helping to discharge sediment. Compared with the traditional grouting method, the cleaning effect is better and can also discharge sediment in the bottom corners.

[0048] The foregoing description of specific exemplary embodiments of the present invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the present invention to the precise forms disclosed, and it is obvious that many changes and variations can be made based on the above teachings. Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. The purpose of selecting and describing exemplary embodiments is to explain the specific principles of the present invention and its practical application, so that those skilled in the art, after reading this specification, can make modifications, substitutions, variations, and various choices and changes to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, variations, and choices and changes are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A device for cleaning slag at the bottom of deep pile foundation holes, comprising a support platform, wherein a rotating pipe is mounted on the support platform; characterized in that: The support platform is provided with a ring seat. One end of the rotating tube is rotatably connected to the ring seat. The other end of the rotating tube extends downward toward the support platform and gradually narrows in diameter, and is provided with a tube opening. A branch tube is provided at the other end of the rotating tube. The end of the branch tube extends to the side and downward toward the rotating tube. An adjusting tube is also installed on the ring seat. The adjusting tube is parallel to the rotating tube and close to it.

2. The deep pile foundation hole bottom cleaning device according to claim 1, characterized in that, The top of the ring seat is provided with a mixing chamber, and the bottom of the mixing chamber is provided with a central sleeve. The central sleeve can be inserted into the rotating tube from one end of the rotating tube and fits against the tube wall of the rotating tube. The central sleeve and the rotating tube can rotate relative to each other. The side of the mixing chamber is provided with two or more slurry inlet pipes. The bottom of the mixing chamber is provided with a second conical surface between the connection end of the central sleeve and the connection end of the central sleeve.

3. The deep pile foundation hole bottom cleaning device according to claim 2, characterized in that, The support platform is provided with a support plate, and an installation hole is provided on the support plate. The outer periphery of the ring buckle seat is provided with an outwardly protruding first limiting ring. One end of the ring buckle seat can pass through the installation hole, and the bottom of the first limiting ring can abut against the outer periphery of the installation hole.

4. The deep pile foundation hole bottom cleaning device according to claim 2, characterized in that, The support plate includes a fixed plate and a flap. The fixed plates are located near both ends of the support platform and form a well opening between them. The bottom of the ring seat can pass through the well opening. There are two flaps. One end of the flap is rotatably connected to the opposite end of the fixed plate, and the other end of the flap has a semi-circular opening. When the two flaps cover the well opening, the two semi-circular openings can close to each other to form the mounting hole.

5. The deep pile foundation hole bottom cleaning device according to claim 4, characterized in that, The flap is provided with pull rods on both sides, and the pull rods are located near the other end of the flap.

6. The deep pile foundation hole bottom cleaning device according to claim 2, characterized in that, The bottom of the ring seat is provided with a reinforcing sleeve, the adjusting tube is sleeved inside the reinforcing sleeve, and the end of the reinforcing sleeve is provided with a first conical surface.

7. The deep pile foundation hole bottom cleaning device according to claim 2, characterized in that, The ring seat is provided with a transmission chamber, and the bottom of the transmission chamber is provided with a shaft hole. The rotating tube is rotatably fitted into the shaft hole. A second limiting ring is provided on the outer periphery of one end of the rotating tube. The second limiting ring can abut against the bottom of the transmission chamber for limiting.

8. The deep pile foundation hole bottom cleaning device according to claim 7, characterized in that, A gear ring is fitted at one end of the rotating tube, and the gear ring is fixedly connected to the top of the second limiting ring by bolts; a detachable screw box is provided on the side of the ring seat, a drive motor is provided at the end of the screw box, and a rotatable drive screw is provided inside the screw box. The end of the drive screw is connected to the drive shaft of the drive motor, and the drive screw meshes with the gear ring.

9. The deep pile foundation hole bottom cleaning device according to claim 1, characterized in that, The rotating tube comprises two or more segmented tubes, and the two ends of each segmented tube are connected by threads.

10. The deep pile foundation hole bottom cleaning device according to claim 9, characterized in that, The rotating tube also includes a reducing tube, which is located near one end of the rotating tube. The diameter of the reducing tube is larger than the diameter of the segment tube, and a third conical surface is provided at the connection end between the reducing tube and the segment tube.

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