Cast-in-situ bored pile construction device
By designing a drilling pile construction device including a first storage pool, injection module, down pressure device and distance measurement module, the problems of high hole cleaning difficulty, poor mud wall protection effect and insufficient compactness of concrete mortar in the prior art are solved, and the effective cleaning of mud in the drilling hole and high density injection of concrete mortar are achieved, ensuring the bearing capacity of the pile body and engineering safety.
Patent Information
- Application Number
- CN202421358901.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-14
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2034-06-14
AI Technical Summary
In the existing drilling and filling pile construction methods, hole cleaning is difficult and mud wall protection is poor, which can easily lead to hole collapse, and the injected concrete mortar is insufficient, affecting the pile body bearing capacity and engineering safety.
A drilling pile construction device is designed, including a first storage tank, a suction module, a down pressure device and a distance measuring module. Through the injection mechanism of the injection module and the injection channel of the downward pressure device, the cleaning of mud in the drilling hole and the injection of concrete mortar are realized. The downcoming device works in concert with the injection and suction module to ensure the wall protection effect of the mud on the drilling hole walls, and to improve its compactness by compacting the concrete mortar.
The device can fully clean the mud in the drilling holes, prevent hole collapse, improve the bearing capacity of the pile body, and ensure the safety of the project by injecting high-density concrete mortar.
Smart Images
Figure CN222666778U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of building construction, in particular to a bored cast-in-place pile construction device. Background Art
[0002] In the construction of building foundations, it is often necessary to pour concrete mortar. For example, in the construction of bored cast-in-place piles, after the drilling is completed, in order to avoid damage to the pile body caused by excessive sediment at the bottom of the hole, the hole must be cleaned as soon as possible and concrete must be poured underwater.
[0003] At present, the common hole cleaning methods used in most projects are positive circulation slurry replacement hole cleaning or reverse circulation rotary hole cleaning. When the hole cleaning is completed, a grouting pipe is buried in the borehole. The grouting pipe is connected to the grouting pump and the concrete mortar pool in sequence. The grouting pump can pump the concrete mortar in the concrete mortar pool into the grouting pipe, and then the grouting pipe gradually injects concrete mortar from the bottom of the hole upward. However, when using positive circulation slurry replacement hole cleaning, a large amount of mud residue will remain in the borehole during drilling, increasing the difficulty of hole cleaning; when using reverse circulation rotary hole cleaning, a large amount of mud residue will be extracted during drilling, and the residual mud has a low viscosity, which has a general effect on the wall protection of the borehole wall, and is easy to cause instability and damage to the borehole wall, which is easy to cause collapse, thereby affecting the bearing capacity of the pile body. In addition, when grouting is buried in the grouting pipe, the injected concrete mortar has poor density, which will reduce the bearing capacity of the pile body and affect the safety of the project. Utility Model Content
[0004] The utility model aims to provide a bored pile construction device, which can fully clean the hole to ensure the wall protection effect of mud on the borehole wall and prevent the hole collapse from affecting the bearing capacity of the pile body, and can also make the injected concrete mortar have better density, thereby ensuring the bearing capacity of the pile body and engineering safety.
[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0006] A bored pile construction device, comprising:
[0007] A first containing tank, for selectively storing mud or concrete mortar;
[0008] An injection and suction module comprises an injection and suction mechanism and an injection and suction tube, wherein the inner cavity of the first containing tank is connected with the injection and suction cavity of the injection and suction mechanism through the injection and suction tube;
[0009] A pressing device is configured to be lowered into the drill hole; the pressing device is detachably connected to the injection and suction mechanism, and the pressing device is provided with an injection and suction channel, and the injection and suction channel is connected to the injection and suction pipe through the injection and suction cavity of the injection and suction mechanism;
[0010] The distance measuring module is used to monitor the distance between the pressing device and the bottom wall of the borehole.
[0011] Optionally, a flange is provided on the injection and suction mechanism along the circumferential direction, a plurality of insertion holes are opened on the flange along the circumferential direction, a plurality of threaded holes are provided on the pressing device, the plurality of insertion holes correspond one-to-one to the plurality of threaded holes, the fixing piece is passed through the insertion hole, and the fixing piece is threadedly screwed into the threaded hole.
[0012] Optionally, the bored pile construction device also includes an injection module, there is a gap between the pressing device and the wall of the bored hole, the pressing device is provided with multiple injection ports, the multiple injection ports all penetrate the side wall of the pressing device, and the injection module is connected to the multiple injection ports to inject expansive soil slurry into the gap through the injection ports.
[0013] Optionally, the injection module includes a second containing tank, an injection mechanism and an injection pipe assembly, the second containing tank is used to store the expansive soil slurry, the inner cavity of the second containing tank is connected to the inlet end of the injection pipe assembly through the injection cavity of the injection mechanism, and the outlet end of the injection pipe assembly is connected to the injection port.
[0014] Optionally, the bored pile construction device further comprises a control module, and the injection and suction mechanism, the injection mechanism and the distance measuring module are all communicatively connected to the control module.
[0015] Optionally, the second containing tank is arranged above the injection mechanism.
[0016] Optionally, the pressing device is provided with an annular channel, the annular channel is arranged outside the injection and suction channel, and the annular channel is provided with a plurality of injection ports along the circumferential direction;
[0017] The injection pipe assembly includes a first injection pipe and a plurality of second injection pipes, wherein the plurality of second injection pipes are connected to the injection cavity of the injection mechanism through the first injection pipe, and an end of each second injection pipe away from the first injection pipe is connected to the annular channel.
[0018] Optionally, at least one of the second injection pipes is disposed between every two adjacent injection ports.
[0019] Optionally, a mounting groove is provided at the bottom of the pressing device, the ranging module is installed in the mounting groove, and the lower surface of the ranging module is not lower than the lower surface of the pressing device.
[0020] Optionally, the injection and suction tube and the injection tube assembly are both hoses.
[0021] Beneficial effects of the utility model:
[0022] The bored pile construction device proposed in the utility model includes a first containing tank, an injection and suction module, a downward pressure device and a distance measuring module, which can be used to clean the mud in the borehole and inject concrete mortar into the borehole. When cleaning the mud in the borehole, the downward pressure device is lowered into the borehole, and the injection and suction mechanism is started to suck the mud between the downward pressure device and the bottom of the borehole. The sucked mud is stored in the first containing tank. As the mud is sucked out, the downward pressure device will gradually move downward, and the position of the downward pressure device in the borehole can be monitored in real time through the distance measuring module. When the distance measuring module detects that the downward pressure device moves down to the bottom of the borehole, the suction is stopped to complete the hole cleaning. When injecting concrete mortar, the mud in the first containing tank is first cleaned, and the concrete mortar is injected into the first containing tank, and then the injection and suction mechanism is started to inject the concrete mortar between the downward pressure device and the bottom of the borehole. As the concrete mortar is injected, the downward pressure device will gradually move upward until the entire pile hole is filled. By setting up a down-pressure device to cooperate with the injection and suction module, the mud in the borehole can be fully cleaned, the operation is simple, and sufficient mud is left in the borehole. The mud has a wall protection effect on the borehole wall, which can prevent the hole from collapsing and affecting the bearing capacity of the pile body. In addition, concrete mortar can be injected into the hole from bottom to top through the injection and suction module. During the grouting process, the down-pressure device is always pressed on the upper surface of the concrete mortar, which can compact the concrete mortar to make it have better density, ensuring the bearing capacity of the pile body and engineering safety. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 It is a structural schematic diagram of a bored pile construction device provided by an embodiment of the utility model;
[0024] Figure 2 yes Figure 1 The enlarged view of point A in the middle;
[0025] Figure 3 is a top view of the pressing device provided by an embodiment of the utility model;
[0026] Figure 4 yes Figure 1 Enlarged view of point B in the middle.
[0027] In the figure:
[0028] 100. Drilling;
[0029] 1. The first holding tank;
[0030] 2. injection and suction module; 21. injection and suction mechanism; 211. flange; 212. fixing member; 22. injection and suction tube;
[0031] 3. Pressing device; 31. Injection and suction channel; 32. Injection port; 33. Annular channel; 34. Mounting groove;
[0032] 4. Distance measurement module;
[0033] 5. Injection module; 51. Second containing tank; 52. Injection mechanism; 53. Injection pipe assembly; 531. First injection pipe; 532. Second injection pipe. DETAILED DESCRIPTION
[0034] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.
[0035] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0036] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.
[0037] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.
[0038] This embodiment provides a bored pile construction device, such as Figure 1As shown, it includes a first accommodating tank 1, an injection and suction module 2, a downward pressure device 3 and a distance measuring module 4, which can be used to clean the mud in the borehole 100 and inject concrete mortar into the borehole 100. The first accommodating tank 1 can be used to selectively store mud or concrete mortar. The injection and suction module 2 includes an injection and suction mechanism 21 and an injection and suction pipe 22, one end of the injection and suction pipe 22 is connected to the inner cavity of the first accommodating tank 1, and the other end is connected to the injection and suction cavity of the injection and suction mechanism 21, that is, the inner cavity of the first accommodating tank 1 is connected to the injection and suction cavity of the injection and suction mechanism 21 through the injection and suction pipe 22. The pressing device 3 is configured to be located below the borehole 100 and can move within the borehole 100. The pressing device 3 is detachably connected to the injection and suction mechanism 21. The pressing device 3 is provided with an injection and suction channel 31. One end of the injection and suction channel 31 is connected to the injection and suction cavity of the injection and suction mechanism 21, that is, the injection and suction channel 31 is connected to the injection and suction pipe 22 through the injection and suction cavity of the injection and suction mechanism 21, and the other end of the injection and suction channel 31 is connected to the borehole 100. Therefore, the injection and suction mechanism 21 can suck the mortar in the borehole 100 into the first containing tank 1 through the injection and suction channel 31, and can also extract the concrete mortar in the first containing tank 1 and inject it into the borehole 100 through the injection and suction channel 31. The distance measuring module 4 can be used to monitor the distance between the pressing device 3 and the bottom wall of the borehole 100.
[0039] When cleaning the mud in the borehole 100, the pressing device 3 is lowered into the borehole 100, and the injection and suction mechanism 21 is started to suck the mud between the pressing device 3 and the bottom of the borehole 100. The sucked mud passes through the injection and suction channel 31, the injection and suction cavity of the injection and suction mechanism 21 and the injection and suction pipe 22 and enters and is stored in the first containing pool 1. As the mud is pumped out, the pressing device 3 will gradually move downward. The position of the pressing device 3 in the borehole 100 can be monitored in real time by the distance measuring module 4. When the distance measuring module 4 detects that the pressing device 3 moves down to the bottom of the borehole 100, the suction is stopped to complete the hole cleaning. When injecting concrete mortar, first clean the mud stored in the first containing pool 1, and inject the concrete mortar into the first containing pool 1, then start the injection and suction mechanism 21 to suck the concrete mortar in the first containing pool 1, and the sucked concrete mortar is injected between the pressing device 3 and the bottom of the borehole 100 through the injection and suction pipe 22, the injection and suction cavity of the injection and suction mechanism 21, and the injection and suction channel 31. With the continuous injection of concrete mortar, the pressing device 3 will gradually move up until the concrete mortar fills the entire pile hole. By setting the pressing device 3 to cooperate with the injection and suction module 2, the mud in the borehole 100 can be fully cleaned, the operation is simple, and a sufficient amount of mud is left in the borehole 100. The mud has a wall protection effect on the wall of the borehole 100, which can prevent the collapse of the hole from affecting the bearing capacity of the pile body. In addition, concrete mortar can be injected into the hole from bottom to top through the injection and suction module 2. During the grouting process, the downward pressure device 3 is always pressed on the upper surface of the concrete mortar, which can compact the concrete mortar to make it have better density, thereby ensuring the bearing capacity of the pile body and the safety of the project.
[0040] Exemplarily, a screw pump is selected as the injection and suction mechanism 21 .
[0041] Alternatively, if Figure 1 and Figure 2 As shown, the injection-suction mechanism 21 is provided with a flange 211 along the circumferential direction, and a plurality of jacks (not shown in the figure, such as 5 to 10, and 5 are set as an example in this embodiment) are opened on the flange 211 along the circumferential direction, and a plurality of threaded holes (not shown in the figure, such as 5 to 10, and 5 are set as an example in this embodiment) are set on the pressing device 3. When the pressing device 3 and the injection-suction mechanism 21 are connected, the flange 211 is attached to the surface of the pressing device 3, and the plurality of jacks are matched with the plurality of threaded holes one by one, and then the fixing member 212 is passed through the jack and screwed into the threaded hole. When the pressing device 3 needs to be replaced, it is only necessary to screw the fixing member 212 out of the threaded hole. The fixing member 212 is used to connect the pressing device 3 and the injection-suction mechanism 21, and the structure is simple, easy to disassemble and install, and different sizes of pressing devices 3 can be flexibly selected according to the size of the borehole 100 in the actual project. It should be noted that the difference between the pressing devices 3 of different sizes is only the change in the size of the outer contour.
[0042] For example, in this embodiment, a bolt is selected as the fixing member 212. In other embodiments, a screw or the like can also be selected as the fixing member 212, which is not limited here.
[0043] It should be noted that the number of the fixing members 212 is consistent with the number of the sockets.
[0044] Alternatively, if Figure 1 and Figure 3 As shown, the bored pile construction device also includes an injection module 5, which is used to inject expansive soil slurry into the borehole 100. There is a gap between the down-pressing device 3 and the wall of the borehole 100, which can provide a space for the down-pressing device 3 to move, and is conducive to the up and down movement of the down-pressing device 3 in the borehole 100 when cleaning the hole. The down-pressing device 3 is provided with a plurality of injection ports 32, and the plurality of injection ports 32 all penetrate the side wall of the down-pressing device 3, and the injection module 5 is connected to the plurality of injection ports 32. When the injection and suction module 2 sucks the slurry in the borehole 100, the injection module 5 is started at the same time, and the injection module 5 transports the expansive soil slurry to the injection port 32 of the down-pressing device 3, and flows out from the side wall of the down-pressing device 3 and is injected into the gap between the down-pressing device 3 and the wall of the borehole 100, which can play a lubricating role, reduce the resistance between the wall of the borehole 100 and the down-pressing device 3, facilitate the up and down movement of the down-pressing device 3, and is conducive to cleaning the hole.
[0045] In this embodiment, the injection ports 32 are evenly arranged along the circumference of the pressing device 3, which can evenly reduce the circumferential resistance of the pressing device 3, so that the pressing device 3 always maintains balance, and prevents the pressing device 3 from tilting due to different resistances, thereby affecting the hole cleaning effect. In other embodiments, the injection ports 32 can also be randomly distributed, which is not limited here.
[0046] Exemplarily, in this embodiment, six injection ports 32 are arranged along the circumference of the downward pressure device 3. In other embodiments, other numbers of injection ports 32 may also be arranged, such as 4 or 8, etc. The number of injection ports 32 is not limited here. By setting a plurality of injection ports 32, the injection amount of the expansive soil slurry can be increased and the resistance can be further reduced.
[0047] Alternatively, see Figure 1 and Figure 3 The injection module 5 includes a second containing tank 51, an injection mechanism 52 and an injection pipe assembly 53. The second containing tank 51 can be used to store expansive soil slurry. One end of the injection cavity of the injection mechanism 52 is connected to the inner cavity of the second containing tank 51, and the other end is connected to the inlet end of the injection pipe assembly 53, that is, the inner cavity of the second containing tank 51 is connected to the inlet end of the injection pipe assembly 53 through the injection cavity of the injection mechanism 52. The outlet end of the injection pipe assembly 53 is connected to the injection port 32. When it is necessary to inject expansive soil slurry, the injection mechanism 52 is started, and the expansive soil slurry in the second containing tank 51 is extracted by the injection mechanism 52 and transported to the injection cavity of the injection mechanism 52, and then flows into the gap between the pressing device 3 and the wall of the borehole 100 from the injection port 32 after passing through the injection pipe assembly 53, providing lubrication for the pressing device 3.
[0048] Exemplarily, a suction pump is selected as the injection mechanism 52 .
[0049] Alternatively, see Figure 1 The second containing tank 51 is arranged above the injection mechanism 52. When the injection mechanism 52 extracts the expansive soil slurry in the second containing tank 51, the expansive soil slurry will tend to move downward into the injection cavity due to gravity, which is beneficial for the injection mechanism 52 to extract the expansive soil slurry, reduce the required power of the injection mechanism 52, and reduce energy consumption.
[0050] Optionally, the bored pile construction device also includes a control module. The injection and suction mechanism 21, the injection mechanism 52 and the distance measuring module 4 are all connected to the control module in communication. The control module can control the injection and suction mechanism 21 to extract the mud in the borehole 100 and suck it into the first containing tank 1; it can also control it to suck the concrete mortar in the first containing tank 1 and inject it into the borehole 100. The control module can control the injection mechanism 52 to suck the swelling soil slurry in the second containing tank 51 and inject it into the gap between the pressing device 3 and the wall of the borehole 100. The distance measuring module 4 is used to detect the distance between the pressing device 3 and the bottom of the borehole 100, and send a signal to the control module. The control module receives the signal transmitted by the distance measuring module 4 to obtain the monitored distance information. When the distance is less than or equal to 1 cm, the control module sends a command to stop the injection and suction mechanism 21 and the injection mechanism 52. When the drilling hole 100 is completed, the control module sends a command to the injection and suction mechanism 21 and the injection mechanism 52, and the injection and suction mechanism 21 extracts the mud in the borehole 100, and the injection mechanism 52 injects the expansive soil mud into the gap between the pressing device 3 and the wall of the borehole 100. As the mud in the borehole 100 is extracted, the pressing device 3 moves down continuously. During this process, the distance measurement module 4 continuously monitors the distance between the pressing device 3 and the bottom of the borehole 100. When the monitored distance is less than or equal to 1 cm, the control module sends a shutdown operation command to stop the injection and suction mechanism 21 and the injection mechanism 52, thereby completing the hole cleaning. When it is necessary to inject concrete mortar, first clean the mud in the first containing pool 1, and inject the concrete mortar into the first containing pool 1, and then the control module sends a command to the injection and suction mechanism 21, and the injection and suction mechanism 21 sucks the concrete mortar in the first containing pool 1 and injects it into the borehole 100.
[0051] For example, in this embodiment, the distance measuring module 4 includes a radar rangefinder, and the control module includes a PLC controller or an STM32 controller. The PLC controller or the STM32 controller is connected to the radar rangefinder for communication, and can receive the signal of the radar rangefinder, collect the distance information between the pressing device 3 and the bottom of the borehole 100, and when the distance information collected by the PLC controller or the STM32 controller is less than or equal to 1 cm, a shutdown operation instruction is sent to stop the injection and suction mechanism 21 and the injection mechanism 52 from operating.
[0052] Alternatively, if Figure 1 and Figure 3As shown, an annular channel 33 is provided on the pressing device 3. The annular channel 33 is arranged outside the injection and suction channel 31, and a plurality of injection ports 32 are arranged along the circumferential direction of the annular channel 33. The injection pipe assembly 53 includes a first injection pipe 531 and a plurality of second injection pipes 532. One end of the first injection pipe 531 is connected to the injection cavity of the injection mechanism 52, and the other end is connected to the plurality of second injection pipes 532. That is, the plurality of second injection pipes 532 are connected to the injection cavity of the injection mechanism 52 through the first injection pipe 531. In addition, one end of each second injection pipe 532 away from the first injection pipe 531 is connected to the annular channel 33. When the expansive soil slurry is injected, the expansive soil slurry will flow into the plurality of second injection pipes 532 through the injection cavity of the injection mechanism 52 and the first injection pipe 531, and then flow into the annular channel 33 from the plurality of second injection pipes 532, and finally flow out from the injection port 32. By providing a plurality of second injection pipes 532 connected to the first injection pipe 531 and the annular channel 33, the injection efficiency of the expansive soil slurry can be improved, the injection volume can be increased, and the resistance between the pressing device 3 and the hole wall can be reduced.
[0053] Alternatively, see Figure 3 At least one second injection pipe 532 is provided between each two adjacent injection ports 32. By distributing the plurality of injection ports 32, the expansive soil slurry is evenly dispersed and flows into the annular channel 33, so that the amount of expansive soil slurry flowing out of each injection port 32 is substantially the same, and the resistance of the circumferential outer wall of the pressing device 3 can be evenly reduced, so that the pressing device 3 moves downward smoothly and the hole cleaning effect is ensured.
[0054] For example, in this embodiment, six second injection pipes 532 are provided, and one second injection pipe 532 is provided between each two adjacent injection ports 32. In other embodiments, multiple second injection pipes 532, such as 12, may be provided as required, which may further increase the grouting amount and ensure the lubrication effect, which is not limited here.
[0055] Alternatively, if Figure 4 As shown, a mounting groove 34 is provided at the bottom of the pressing device 3, and the distance measuring module 4 is installed in the mounting groove 34, and the lower surface of the distance measuring module 4 is not lower than the lower surface of the pressing device 3. When cleaning the hole, the pressing device 3 will continue to move downward until the distance from the bottom of the hole is less than or equal to 1 cm. The distance measuring module 4 is installed in the mounting groove 34 and ensured not to leak out, which can prevent the distance measuring module 4 from contacting the bottom wall of the hole and being damaged, thereby extending the service life.
[0056] Optionally, the injection and suction pipe 22 and the injection pipe assembly 53 are both hoses. The hose has good deformation ability and can be arbitrarily deformed according to the site form of the construction project, which is conducive to the injection and suction pipe 22 and the injection pipe assembly 53 extending into the borehole 100 to complete the hole cleaning and grouting work.
[0057] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.
Claims
1. A bored pile construction device, characterized in that: include: A first containing tank (1) for selectively storing mud or concrete mortar; An injection and suction module (2), comprising an injection and suction mechanism (21) and an injection and suction tube (22), wherein the inner cavity of the first containing pool (1) is connected to the injection and suction cavity of the injection and suction mechanism (21) through the injection and suction tube (22); A pressing device (3) is configured to be lowered into the borehole (100); the pressing device (3) is detachably connected to the injection and suction mechanism (21); the pressing device (3) is provided with an injection and suction channel (31); the injection and suction channel (31) is connected to the injection and suction pipe (22) through the injection and suction cavity of the injection and suction mechanism (21); A distance measuring module (4) is used to monitor the distance between the pressing device (3) and the bottom wall of the borehole (100).
2. The bored pile construction device according to claim 1, characterized in that: The injection and suction mechanism (21) is provided with a flange (211) along the circumferential direction, and the flange (211) is provided with a plurality of insertion holes along the circumferential direction. The pressing device (3) is provided with a plurality of threaded holes, and the plurality of insertion holes correspond to the plurality of threaded holes one by one. A fixing piece (212) is inserted into the insertion hole, and the fixing piece (212) is screwed into the threaded hole.
3. The bored pile construction device according to claim 1, characterized in that: The bored pile construction device also includes an injection module (5); a gap exists between the pressing device (3) and the wall of the borehole (100); the pressing device (3) is provided with a plurality of injection ports (32); the plurality of injection ports (32) all penetrate the side wall of the pressing device (3); the injection module (5) is connected to the plurality of injection ports (32) so as to inject the expansive soil slurry into the gap through the injection ports (32).
4. The bored pile construction device according to claim 3, characterized in that: The injection module (5) comprises a second containing tank (51), an injection mechanism (52) and an injection pipe assembly (53); the second containing tank (51) is used to store the expansive soil slurry; the inner cavity of the second containing tank (51) is connected to the inlet end of the injection pipe assembly (53) through the injection cavity of the injection mechanism (52); and the outlet end of the injection pipe assembly (53) is connected to the injection port (32).
5. The bored pile construction device according to claim 4, characterized in that: The bored pile construction device also includes a control module, and the injection and suction mechanism (21), the injection mechanism (52) and the distance measurement module (4) are all communicatively connected to the control module.
6. The bored pile construction device according to claim 4, characterized in that: The second containing tank (51) is arranged above the injection mechanism (52).
7. The bored pile construction device according to claim 4, characterized in that: The pressing device (3) is provided with an annular channel (33), the annular channel (33) is arranged outside the injection and suction channel (31), and the annular channel (33) is provided with a plurality of injection ports (32) along the circumferential direction; The injection pipe assembly (53) comprises a first injection pipe (531) and a plurality of second injection pipes (532); the plurality of second injection pipes (532) are connected to the injection cavity of the injection mechanism (52) through the first injection pipe (531); and one end of each second injection pipe (532) away from the first injection pipe (531) is connected to the annular channel (33).
8. The bored pile construction device according to claim 7, characterized in that: At least one second injection pipe (532) is provided between every two adjacent injection ports (32).
9. The bored pile construction device according to any one of claims 1 to 8, characterized in that: The bottom of the pressing device (3) is provided with a mounting groove (34), the distance measuring module (4) is installed in the mounting groove (34), and the lower surface of the distance measuring module (4) is not lower than the lower surface of the pressing device (3).
10. The bored pile construction device according to any one of claims 4 to 8, characterized in that: The injection and suction pipe (22) and the injection pipe assembly (53) are both hoses.