A bored pile hole cleaning device

Abstract

The utility model provides a kind of bored pile hole cleaning device, belongs to the technical field of hole cleaning device, including sleeve, pump pipe, connecting disc, sleeve is set below connecting disc, pump pipe is penetrated connecting disc and sleeve from top to bottom, and the center of sleeve, pump pipe and connecting disc is located on same vertical line, further include spacing adjustment assembly, spacing adjustment assembly includes: cross bar, sliding seat, first connecting arm, drive rod, connecting seat, lifting plate and rolling ball, cross bar is provided with two.The utility model discloses by setting linkage mechanism of driving multiple rolling ball synchronous adjustment position, the synchronous adjustment of left and right sides rolling ball and sleeve spacing is realized by relevant components cooperation, ensure that the spacing consistency of each rolling ball and sleeve, guarantee guiding axis accuracy;With the adjustment function of each group rolling ball opening and closing angle, can be flexibly adapted to different aperture pile hole inner wall, ensure that rolling ball is always closely adhered to inner wall, stably play guiding effect.

Description

Technical Field

[0001] This utility model belongs to the technical field of hole cleaning devices, specifically relating to a hole cleaning device for bored piles. Background Technology

[0002] When drilling and grouting piles are formed, a large amount of drilling slag will accumulate at the bottom of the pile hole. In order to prevent it from affecting the quality of the pile, a hole cleaning equipment is required to clean the pile hole and remove the drilling slag at the bottom of the hole.

[0003] In related technology (Chinese patent with publication number CN222500254U), a borehole cleaning device for bored piles is disclosed, including a sleeve fixedly fitted onto the outer wall of the bottom end of a pump pipe. Multiple guide support mechanisms are fixedly connected to the outer wall of the sleeve in a circumferential arrangement. Each guide support mechanism includes two telescopic rods, one end of which is fixedly connected to the outer wall of the sleeve, and the other ends of the two telescopic rods are jointly fixedly connected to a vertical plate. Multiple guide wheels are installed on the outer wall of the vertical plate. Adjusting the length of each telescopic rod adjusts the distance between the guide wheels and the sleeve, thereby facilitating the use of a hanging wheel to guide the vertical movement of the device within the borehole, ensuring that the pump pipe is centered in the pile hole.

[0004] In the above method, the distance between each guide wheel and the casing needs to be adjusted by adjusting the telescopic rods one by one. This decentralized adjustment method is not only cumbersome to operate, but also, due to the lack of a linkage mechanism, it is easy to cause inconsistencies in the distance between each guide wheel and the casing, which in turn causes the guide axis of the guide wheel group to deviate from the designed displacement path of the casing, significantly reducing the guiding accuracy, affecting the vertical sinking control effect of the casing, and thus affecting the cleaning effect of the grouting pile hole. Utility Model Content

[0005] To address the problems of existing technologies where the distance between each guide wheel and the casing needs to be adjusted individually using telescopic rods, which is cumbersome and prone to inconsistencies, leading to guide deviation, reduced accuracy, and affecting casing sinking control and the cleaning effect of the bored pile hole, this utility model provides a bored pile cleaning device. This device features a linkage mechanism that drives multiple rolling balls to adjust their positions synchronously. Through the coordinated action of components such as the lifting plate, connecting seat, drive rod, first connecting arm, and sliding seat, the distance between the rolling balls on both sides and the casing can be adjusted synchronously. This centralized adjustment method ensures the consistency of the distance between each rolling ball and the casing, guarantees the accuracy of the guide axis, significantly improves guiding accuracy, effectively ensures the subsequent vertical descent of the casing, and thus ensures the cleaning quality of the bored pile hole. The specific technical solution is as follows:

[0006] A borehole cleaning device for bored piles includes a casing, a pump pipe, and a connecting plate. The casing is positioned below the connecting plate, and the pump pipe passes through the connecting plate and the casing from top to bottom. The centers of the casing, the pump pipe, and the connecting plate are located on the same vertical line. The device also includes a spacing adjustment assembly, which comprises: a crossbar, a sliding seat, a first connecting arm, a drive rod, a lifting plate, and rolling balls. Two crossbars are provided, symmetrically mounted on the sidewalls of the casing. The sliding seat is slidably fitted onto the corresponding crossbar. One end of the first connecting arm is fixedly mounted to the sidewall of the sliding seat. The bottom end of the drive rod is rotatably connected to the other end of the first connecting arm. The connecting seat moves vertically, and the top end of the drive rod is rotatably connected to the connecting seat. The lifting plate passes through the connecting plate vertically, and is fixedly connected to the top end of the connecting seat. Four rolling balls are provided, with each pair of rolling balls forming a group connected to the sliding seat.

[0007] In the above technical solution, a locking component is provided between the lifting plate and the connecting plate. The locking component includes: a positioning hole, a first positioning pin, and a second positioning pin. Multiple positioning holes are provided, and the multiple positioning holes are equidistantly opened through the lifting plate in the vertical direction. The first positioning pin and the second positioning pin respectively pass through the positioning hole, and the first positioning pin and the second positioning pin are respectively provided on the upper and lower sides of the connecting plate, and the first positioning pin and the second positioning pin are provided in the inner cavity of the lifting plate near the side wall of the connecting plate.

[0008] The above technical solution also includes: a second connecting arm and a seat body, wherein two second connecting arms are provided, and the two second connecting arms are respectively fixedly connected to the rear sidewalls of the two sliding seats; the seat body is fixedly installed at the second connecting arm.

[0009] In the above technical solution, two sets of connecting components are provided in the seat body. The two sets of connecting components are symmetrically arranged front and back with respect to the horizontal central axis of the seat body. Each set of connecting components includes: a rotating pin, a swing arm, and a first sliding groove. The rotating pin is rotatably connected to the inner cavity of the seat body. One end of the swing arm is fixedly connected to the rotating pin, and the other end of the swing arm is rotatably connected to the rolling ball. The first sliding groove is formed on the side wall of the swing arm.

[0010] The above technical solution also includes a driving component, which includes: a first slider, an adjusting rod, a moving rod, and a second slider. The first slider is slidably embedded in the inner cavity of the first slide groove; the adjusting rod is fixedly installed between the two first slide grooves; one end of the moving rod is fixedly installed at the middle of the top of the adjusting rod; and the second slider is fixedly installed at the other end of the moving rod.

[0011] In the above technical solution, the driving component further includes: a second slide groove and a lead screw, wherein the second slide groove is opened horizontally on the seat; the lead screw is rotatably connected to the inner cavity of the second slide groove, and the second slider is threadedly sleeved on the lead screw.

[0012] In the above technical solution, the horizontal central axis of the seat, the horizontal central axis of the crossbar, and the central axis of the adjusting rod coincide.

[0013] In the above technical solution, the two rolling balls corresponding to each other are symmetrically arranged with respect to the horizontal central axis of the base.

[0014] The borehole cleaning device for bored piles of this utility model has the following advantages compared with the prior art:

[0015] I. In view of the problems in the existing technology of controlling the distance between each guide wheel and the casing by adjusting the telescopic rod one by one, which leads to cumbersome operation, inconsistent spacing, and thus guide deviation, reduced accuracy, and affects the vertical sinking control of the casing and the cleaning effect of the grouting pile hole, this utility model sets up a linkage mechanism to drive multiple rolling balls to adjust their positions synchronously. Through the coordinated action of components such as lifting plate, connecting seat, drive rod, first connecting arm, and sliding seat, the distance between the rolling balls on the left and right sides and the casing can be adjusted synchronously. This centralized adjustment method can ensure the consistency of the spacing between each rolling ball and the casing, ensure the accuracy of the guide axis, significantly improve the guiding accuracy, effectively ensure the subsequent vertical sinking effect of the casing, and thus ensure the cleaning quality of the grouting pile hole.

[0016] II. In this utility model, the lifting plate can be locked after the position is adjusted by the cooperation of the first positioning pin and the second positioning pin, thereby achieving the stability of the position of each rolling ball after the position is adjusted.

[0017] Third, this utility model has the function of adjusting the opening and closing angle of each set of rolling balls, which can further flexibly adjust the contact position between the two sets of rolling balls and the inner wall of the pile hole, so that it can adapt to the inner wall of the pile hole of different diameters and achieve rolling contact, thereby guiding the displacement of the sleeve. This setting ensures that when dealing with the cleaning needs of pile holes of different diameters, the rolling balls are always in close contact with the inner wall of the pile hole, ensuring the stable performance of the guiding function.

[0018] IV. In this utility model, the adjustment of each group of rolling balls is uniformly controlled by components such as adjusting rod, first slider, swing arm, and first slide groove, ensuring that after adjustment, the two groups of rolling balls are still symmetrically distributed with the base as the reference, and the horizontal axis of the base coincides with the horizontal axis of the crossbar. This setting ensures that each group of rolling balls is always symmetrically arranged with respect to the horizontal central axis of the equipment after adjustment, ensuring that each rolling ball continues to roll and fit against the inner wall of the pile hole, maintaining guiding stability.

[0019] V. This utility model uses a rolling ball to replace the traditional vertical guide wheel. Through structural optimization, the original vertical guide wheel's circumferential constraint on the lowering process of the cleaning device is removed, allowing the device to rotate freely in the circumferential direction when lowered vertically, thus improving operational flexibility.

[0020] In summary, this utility model, by setting up a linkage mechanism to drive multiple rolling balls to adjust their positions synchronously, and by coordinating related components, achieves synchronous adjustment of the distance between the rolling balls on the left and right sides and the casing, ensuring the consistency of the distance between each rolling ball and the casing, guaranteeing the accuracy of the guide axis, significantly improving guiding accuracy, and effectively ensuring the subsequent vertical descent effect of the casing and the quality of the cleaning of the grouting pile hole; the locking of the lifting plate after adjustment is achieved through the cooperation of the first positioning pin and the second positioning pin, ensuring the stability of the position of each rolling ball; it has the function of adjusting the opening and closing angle of each group of rolling balls, which can flexibly adapt to the inner wall of pile holes of different diameters, ensuring that the rolling balls are always closely attached to the inner wall and stably perform the guiding function; after unified adjustment, each group of rolling balls can maintain a symmetrical layout relative to the horizontal central axis of the equipment, ensuring that each rolling ball continuously attaches to the inner wall of the pile hole and maintains guiding stability; the use of rolling balls to replace the traditional vertical guide wheels removes the circumferential constraint, allowing the device to rotate freely in the circumferential direction when lowering, improving the flexibility of operation. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the crossbar structure of this utility model;

[0022] Figure 2 This is a front view of the drive rod of this utility model;

[0023] Figure 3 for Figure 2 Enlarged view of point A;

[0024] Figure 4 This is a top view of the second connecting arm of this utility model;

[0025] Figure 5 This is a schematic diagram of the structure of the adjusting rod of this utility model;

[0026] Figure 6 This is a schematic diagram of the structure of the second slider of this utility model;

[0027] Figures 1 to 6In the middle, 1. Sleeve, 2. Pump pipe, 3. Connecting plate, 4. Crossbar, 5. Sliding seat, 6. First connecting arm, 7. Drive rod, 8. Connecting seat, 9. Lifting plate, 10. Positioning hole, 11. First positioning pin, 12. Second positioning pin, 13. Second connecting arm, 14. Seat body, 15. Rotating pin, 16. Swing arm, 17. First slide groove, 18. Adjusting rod, 19. First slider, 20. Rolling ball, 21. Moving rod, 22. Second slider, 23. Second slide groove, 24. Lead screw. Detailed Implementation

[0028] The following are specific implementation cases and appendices. Figures 1 to 6 The present invention will be further described below, but the present invention is not limited to these embodiments.

[0029] A borehole cleaning device for bored piles includes a casing 1, a pump pipe 2, and a connecting plate 3. The casing 1 is positioned below the connecting plate 3, and the pump pipe 2 passes through the connecting plate 3 and the casing 1 from top to bottom. The centers of the casing 1, the pump pipe 2, and the connecting plate 3 are located on the same vertical line. The device also includes a spacing adjustment assembly, which comprises: a crossbar 4, a sliding seat 5, a first connecting arm 6, a drive rod 7, a connecting seat 8, a lifting plate 9, and a rolling ball 20. Two crossbars 4 are provided, and the two crossbars 4 are symmetrically installed on the left and right sides of the casing 1. The sliding seat 5 is slidably sleeved on the corresponding horizontal bar 4; one end of the first connecting arm 6 is fixedly installed on the side wall of the sliding seat 5; the bottom end of the drive rod 7 is rotatably connected to the other end of the first connecting arm 6 through a pin; the connecting seat 8 moves vertically, and the top end of the drive rod 7 is rotatably connected to the connecting seat 8 through a pin; the lifting plate 9 is vertically installed through the connecting plate 3, and the lifting plate 9 is fixedly connected to the top end of the connecting seat 8; four rolling balls 20 are provided, and every two rolling balls 20 form a group connected to the sliding seat 5;

[0030] This invention utilizes a linkage mechanism to drive multiple rolling balls 20 to synchronously adjust their positions. With the coordinated operation of components such as the lifting plate 9, connecting seat 8, drive rod 7, first connecting arm 6, and sliding seat 5, the distance between the rolling balls 20 on both sides and the casing 1 is synchronously adjusted. This centralized adjustment mechanism ensures that each rolling ball 20 maintains an equidistant relationship with the casing 1 through mechanical linkage, effectively eliminating the spacing deviation caused by traditional decentralized adjustments. This ensures that the guide axis highly coincides with the design path, significantly improving the positional accuracy and motion stability of the guiding system. It ensures that the casing 1 maintains an ideal trajectory during vertical sinking, thereby improving the cleaning quality and construction efficiency of the cast-in-place pile hole.

[0031] A locking assembly is provided between the lifting plate 9 and the connecting plate 3. The locking assembly includes: positioning holes 10, a first positioning pin 11, and a second positioning pin 12. Multiple positioning holes 10 are provided, and these holes are equidistantly spaced along the vertical direction on the lifting plate 9. The first positioning pin 11 and the second positioning pin 12 pass through the positioning holes 10, and are respectively located on the upper and lower sides of the connecting plate 3. The first positioning pin 11 and the second positioning pin 12 are located within the inner cavity of the lifting plate 9 near the side wall of the connecting plate 3. In this invention, the cooperation of the first positioning pin 11 and the second positioning pin 12 enables the locking of the lifting plate 9 after position adjustment, thereby ensuring the stability of the positions of the rolling balls 20 after adjustment.

[0032] This solution also includes: a second connecting arm 13 and a seat 14. There are two second connecting arms 13, and the two second connecting arms 13 are respectively fixedly connected to the rear side walls of the two sliding seats 5. The seat 14 is fixedly installed at the second connecting arm 13. Through the sliding seat 5, the second connecting arm 13 and the seat 14, the second connecting arm 13 and the seat 14 can be driven to move synchronously under the displacement of the sliding seat 5.

[0033] The seat 14 is provided with two sets of connecting components. The two sets of connecting components are symmetrically arranged with respect to the horizontal central axis of the seat 14. Each set of connecting components includes: a rotating pin 15, a swing arm 16 and a first slide groove 17. The rotating pin 15 is rotatably connected to the inner cavity of the seat 14 through a bearing. One end of the swing arm 16 is fixedly connected to the rotating pin 15, and the other end of the swing arm 16 is rotatably connected to the rolling ball 20 through a ball bearing. The first slide groove 17 is opened on the side wall of the swing arm 16.

[0034] This invention utilizes an innovative angle adjustment mechanism to precisely control the opening and closing angle of each set of rolling balls 20, allowing the contact position between the two sets of rolling balls 20 and the inner wall of the pile hole to be dynamically adjusted according to the actual hole diameter. This mechanism ensures the synchronous opening and closing of the rolling balls 20 on both sides through mechanical linkage, forming an elastic support system that adapts to the pile hole contour. It achieves full circumferential contact between the rolling elements and the hole wall within different hole diameter ranges, with a contact rate ≥95%. This adaptive contact mechanism effectively avoids the point contact or gap problems caused by changes in hole diameter in traditional rigid guide wheels, enabling the guiding system to maintain stable radial constraint capability under complex working conditions. The guiding accuracy error is ≤±0.5°, significantly improving the verticality control level of cast-in-place pile construction.

[0035] This utility model uses a rolling ball 20 to replace the traditional vertical guide wheel. Through structural optimization, the original vertical guide wheel's circumferential constraint on the cleaning device during the lowering process is removed, allowing the device to rotate freely in the circumferential direction when lowered vertically, thus improving operational flexibility.

[0036] This solution also includes a drive assembly, which includes: a first slider 19, an adjusting rod 18, a moving rod 21, and a second slider 22. The first slider 19 is slidably embedded in the inner cavity of the first slide groove 17; the adjusting rod 18 is fixedly installed between the two first slide grooves 17; one end of the moving rod 21 is fixedly installed at the middle of the top of the adjusting rod 18; the second slider 22 is fixedly installed at the other end of the moving rod 21. The drive assembly also includes: a second slide groove 23 and a lead screw 24. The second slide groove 23 is opened horizontally on the seat 14; the lead screw 24 is rotatably connected to the inner cavity of the second slide groove 23, and the second slider 22 is threadedly sleeved on the lead screw 24.

[0037] The rotating lead screw 24 drives the second slider 22 to slide horizontally along the second slide groove 23, which in turn drives the adjusting rod 18 and the two first sliders 19 on both sides to move synchronously via the moving rod 21. When the first slider 19 slides along the guide groove of the first slide groove 17, the swing arm 16 forces the two rolling balls 20 on both sides to open and close symmetrically around the central axis of the seat body 14 via the rotating pin 15, thereby achieving an angle adjustment range of ±15°. The lead screw 24 adopts a threaded self-locking structure with a static load capacity of ≥50kN, ensuring that the position deviation of the system under vibration conditions after adjustment is ≤0.1mm.

[0038] The horizontal central axis of the base 14, the horizontal central axis of the crossbar 4, and the central axis of the adjusting rod 18 coincide. The two corresponding rolling balls 20 are symmetrically arranged with respect to the horizontal central axis of the base 14. In this utility model, the adjustment of each group of rolling balls 20 is uniformly controlled by components such as the adjusting rod 18, the first slider 19, the swing arm 16, and the first slide groove 17. This ensures that after adjustment, the two groups of rolling balls 20 are still symmetrically distributed with respect to the base 14, and the horizontal axis of the base 14 coincides with the horizontal axis of the crossbar 4. This arrangement ensures that each group of rolling balls 20 is always symmetrically arranged with respect to the horizontal central axis of the equipment after adjustment, ensuring that each rolling ball 20 continuously rolls and adheres to the inner wall of the pile hole, maintaining guiding stability.

[0039] It is worth noting that the casing 1, pump pipe 2, and connecting plate 3 are all the same as those in the prior art [Chinese patent technology with announcement number CN222500254U]. Their connection methods and functions are all prior art. The above components are sufficient to meet the usage requirements for cleaning the pile hole, and will not be described or limited in detail here.

[0040] The first positioning pin 11 and the second positioning pin 12 are both commercially available general-purpose bolts and nuts. Specifically, during positioning, after the bolt passes through the lifting plate 9, the nut is threadedly connected to the free end of the bolt and fits against the side wall of the lifting plate 9 to achieve stable positioning of the lifting plate 9 at the connecting plate 3. It is sufficient to meet the positioning requirements of the lifting plate 9 at the connecting plate 3. No further details or limitations will be provided here.

[0041] Lead screw 24 is a self-locking lead screw available on the market. It can self-lock when it stops rotating and will not be affected by external forces to rotate. This is existing technology, and no model limitation or further details will be provided for the aforementioned existing components.

[0042] The working principle of the borehole cleaning device for bored piles in this embodiment is as follows:

[0043] When adjusting the relative distance between the four rolling balls 20 and the sleeve 1 to fit the inner wall of the pile hole to be cleaned, firstly, remove the first positioning pin 11 and the second positioning pin 12 from the corresponding inner cavity of the lifting plate 9, so that the lifting plate 9 is released from the limit at the connecting plate 3. Adjust the lifting plate 9 in the vertical direction, which can drive the top of the connecting seat 8 and the two drive rods 7 to rise and fall synchronously, thereby driving the two drive rods 7 to drive the corresponding first connecting arm 6 to move horizontally, realizing the position adjustment of the sliding seat 5, the second connecting arm 13 and the corresponding two rolling balls 20, that is, completing the synchronous adjustment of the distance between the left and right rolling balls 20 and the sleeve 1, ensuring that the adjusted rolling balls 20 roll and fit against the inner wall of the pile hole; after the adjustment is completed, re-embed the first positioning pin 11 and the second positioning pin 12 into the corresponding hole of the lifting plate 9, so that they are located on the upper and lower sides of the connecting plate 3 respectively, thereby locking the adjusted position of the lifting plate 9;

[0044] To ensure that the positions of the two rolling balls 20 in each group are adapted to the rolling contact requirements of the inner walls of pile holes with different diameters, the distance between them needs to be adjusted: the rotating screw 24 can drive the second slider 22 to move horizontally along the inner cavity of the second slide groove 23, and then drive the adjusting rod 18 and the two first sliders 19 to move horizontally synchronously through the moving rod 21; when the first slider 19 moves, it slides along the inner cavity of the first slide groove 17, causing the two swing arms 16 to rotate symmetrically about the corresponding rotating pin 15 and move symmetrically relative to the horizontal central axis of the seat 14, ensuring that the two corresponding rolling balls 20 are symmetrically adjusted. In addition, the self-locking characteristic of the screw 24 can ensure the positional stability of the adjusting rod 18, the swing arm 16 and the rolling ball 20 after adjustment.

[0045] This invention employs a linkage mechanism that drives multiple rolling balls 20 to synchronously adjust their positions. Through the coordinated action of related components, the distance between the rolling balls 20 on both sides and the sleeve 1 is adjusted synchronously, ensuring the consistency of the distance between each rolling ball 20 and the sleeve 1. This guarantees the accuracy of the guide axis, significantly improves guiding precision, and effectively ensures the subsequent vertical descent effect of the sleeve 1 and the quality of the grouting pile hole cleaning. The locking of the lifting plate 9 after adjustment is achieved through the cooperation of the first positioning pin 11 and the second positioning pin 12, ensuring the stability of the position of each rolling ball 20. It features adjustable opening and closing angles for each set of rolling balls 20, allowing for flexible adaptation to the inner walls of pile holes with different diameters. This ensures that the rolling balls 20 always fit tightly against the inner wall, stably fulfilling their guiding function. After unified adjustment, each set of rolling balls 20 maintains a symmetrical front-to-back layout relative to the horizontal central axis of the equipment, ensuring that each rolling ball 20 continuously fits against the inner wall of the pile hole, maintaining guiding stability. The use of rolling balls 20 instead of traditional vertical guide wheels removes circumferential constraints, allowing the device to rotate freely circumferentially during lowering, thus improving operational flexibility.

[0046] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.

[0047] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0048] In this disclosure, the terms "upper," "lower," "inner," "middle," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for better description of the embodiments of this disclosure and their implementations, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to require them to be constructed and operated in a specific orientation. Furthermore, some of the aforementioned terms may be used to indicate other meanings besides orientation or positional relationship; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in the embodiments of this disclosure according to the specific circumstances.

[0049] Furthermore, the terms "set up," "connect," and "fix" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this disclosure according to the specific circumstances.

[0050] Unless otherwise stated, the term "multiple" means two or more.

[0051] In this embodiment of the disclosure, the character " / " indicates that the objects before and after it are in an "or" relationship. For example, A / B means: A or B.

[0052] The term "and / or" describes the relationship between objects, indicating that there can be three relationships. For example, A and / or B means: A or B, or A and B.

[0053] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A borehole cleaning device for bored piles, comprising a casing (1), a pump pipe (2), and a connecting plate (3), wherein the casing (1) is disposed below the connecting plate (3), the pump pipe (2) penetrates the connecting plate (3) and the casing (1) from top to bottom, and the centers of the casing (1), the pump pipe (2), and the connecting plate (3) are located on the same vertical line, characterized in that: It also includes a spacing adjustment component, the spacing adjustment component comprising: There are two crossbars (4), and the two crossbars (4) are installed symmetrically on the side wall of the sleeve (1); Sliding seat (5), the sliding seat (5) is slidably sleeved on the crossbar (4) at the corresponding position; The first connecting arm (6) is fixedly installed at one end on the side wall of the sliding seat (5); Drive rod (7), the bottom end of which is rotatably connected to the other end of the first connecting arm (6); Connecting seat (8), the connecting seat (8) moves in the vertical direction, and the top end of the driving rod (7) is rotatably connected to the connecting seat (8); The lifting plate (9) is vertically mounted on the connecting plate (3) and is fixedly connected to the top of the connecting seat (8). Rolling ball (20), four rolling balls (20) are provided, and every two rolling balls (20) are connected to the sliding seat (5) as a group.

2. The borehole cleaning device for bored piles according to claim 1, characterized in that: A locking component is provided between the lifting plate (9) and the connecting plate (3), the locking component comprising: Positioning holes (10), a plurality of positioning holes (10) are provided, and the plurality of positioning holes (10) are equidistantly opened on the lifting plate (9) along the vertical direction; The first positioning pin (11) and the second positioning pin (12) pass through the positioning hole (10) respectively, and the first positioning pin (11) and the second positioning pin (12) are respectively located on the upper and lower sides of the connecting plate (3), and the first positioning pin (11) and the second positioning pin (12) are located in the inner cavity of the lifting plate (9) near the side wall of the connecting plate (3).

3. The borehole cleaning device for bored piles according to claim 1, characterized in that: Also includes: The second connecting arm (13) is provided in two parts, and the two second connecting arms (13) are respectively fixedly connected to the rear sidewalls of the two sliding seats (5); The seat (14) is fixedly installed at the second connecting arm (13).

4. The borehole cleaning device for bored piles according to claim 3, characterized in that: The base (14) is provided with two sets of connecting components. The two sets of connecting components are symmetrically arranged front and back with respect to the horizontal central axis of the base (14). Each set of connecting components includes: Rotating pin (15), the rotating pin (15) is rotatably connected to the inner cavity of the seat (14); A swing arm (16), one end of which is fixedly connected to the rotating pin (15), and the other end of which is rotatably connected to the rolling ball (20); The first groove (17) is formed on the side wall of the swing arm (16).

5. A borehole cleaning device for bored piles according to claim 4, characterized in that: It also includes a driver component, which includes: The first slider (19) is slidably embedded in the inner cavity of the first groove (17); Adjusting rod (18), the adjusting rod (18) is fixedly installed between the two first sliding grooves (17); A movable rod (21), one end of which is fixedly installed at the middle of the top of the adjusting rod (18); The second slider (22) is fixedly installed at the other end of the moving rod (21).

6. The borehole cleaning device for bored piles according to claim 5, characterized in that: The driving component also includes: The second slide groove (23) is formed on the seat (14) in a horizontal direction; The lead screw (24) is rotatably connected to the inner cavity of the second slide groove (23), and the second slider (22) is threaded onto the lead screw (24).

7. A borehole cleaning device for bored piles according to claim 5, characterized in that: The horizontal central axis of the seat (14), the horizontal central axis of the crossbar (4), and the central axis of the adjusting rod (18) coincide.

8. A borehole cleaning device for bored piles according to claim 4, characterized in that: The two rolling spheres (20) corresponding to each other are symmetrically arranged with respect to the horizontal central axis of the seat (14).

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