Square hole guiding device for mechanical pile forming

Abstract

The invention provides a mechanical pile forming square hole guiding device, and relates to the technical field of hole guiding construction related equipment, the mechanical pile forming square hole guiding device comprises a supporting vehicle body structure, a drill rod structure, a drill bit and an eccentric shaft assembly, the drill rod structure is connected with the supporting vehicle body structure, and one end of the drill rod structure is connected with the drill bit through the eccentric shaft assembly; the drill rod structure is used for driving the eccentric shaft assembly to rotate; one end of the drill bit is connected with the eccentric shaft assembly, the other end is provided with a bottom cone part, and protruding parts are arranged on the side wall of the drill bit at intervals in the circumferential direction; the eccentric shaft assembly is used for driving the drill bit to dig square holes in the land. The problems that in the prior art, friction resistance is not uniform and drilling is difficult in the pile sinking process are solved, and then the technical problems that the bearing capacity of a pile foundation is reduced and stability is poor are avoided.

Description

Technical Field

[0001] The invention relates to the technical field of hole-guiding construction related equipment, in particular to a mechanical pile-forming square hole-guiding device. Background Art

[0002] In pile foundation engineering, prefabricated square piles have been widely used due to their superior bearing capacity and adaptability. However, traditional spiral drilling machines are mainly used to drill circular holes, which does not fully match the structural characteristics of square piles. Secondly, the hard ground formation encountered during the drilling process is difficult to penetrate, leading to a series of construction problems.

[0003] First, because the circular hole produced by the auger cannot effectively match the geometric shape of the square pile, the friction resistance will be unevenly distributed during the pile sinking process. Specifically, the corners of the square pile have a larger contact surface with the surrounding soil layer, while the edge part has a smaller contact surface. This uneven friction resistance distribution significantly affects the bearing capacity and overall stability of the pile foundation. This mismatch not only leads to difficulties in the pile sinking process, but also reduces the effective bearing capacity of the pile foundation and affects the reliability of the project.

[0004] Secondly, traditional drill bits are prone to wear during the drilling process. The wear of the drill bit directly affects the drilling efficiency and the quality of the hole wall. In the prior art, the drill bit is usually fixed to the main body of the drilling rig. Once the drill bit is worn or damaged, the replacement or maintenance of the entire drill bit system is relatively complicated, resulting in construction interruptions, increased maintenance costs, and delayed construction progress. This problem of difficult maintenance and high costs frequently occurs in actual construction, further affecting the efficiency and economy of the project.

[0005] Finally, in the final stage of the drilling operation, when encountering hard formations, the drilling process encounters significant resistance and is difficult to penetrate effectively. In addition, large isolated rocks in the hole wall not only increase the difficulty of pile sinking operations, but may also cause pile jamming, which in turn has an adverse effect on construction efficiency. Summary of the invention

[0006] The purpose of the present invention is to provide a mechanical pile-forming and square-hole-guiding device to alleviate the problems of uneven friction and difficulty in drilling during the pile-sinking process in the prior art, thereby avoiding the technical problems of reduced bearing capacity and poor stability of the pile foundation.

[0007] To achieve the above object, the present invention adopts the following technical solution:

[0008] In a first aspect, the present invention provides a mechanical pile-forming and square-hole-guiding device, comprising a supporting vehicle body structure, a drill rod structure, a drill bit and an eccentric shaft assembly, wherein the drill rod structure is connected to the supporting vehicle body structure, and one end of the drill rod structure is connected to the drill bit through the eccentric shaft assembly, and the drill rod structure is used to drive the eccentric shaft assembly to rotate;

[0009] One end of the drill bit is connected to the eccentric shaft assembly, and the other end is provided with a bottom cone portion, and the side wall of the drill bit is provided with protrusions at intervals along the circumferential direction;

[0010] The eccentric shaft assembly is used to drive the drill bit to dig a square hole in the ground.

[0011] Furthermore, a first curved surface and a second curved surface are formed on the side wall of the drill bit, and the first curved surface is connected to the second curved surface to form the protrusion.

[0012] Furthermore, the eccentric shaft assembly includes a connecting block and an eccentric member, one end of the connecting block is connected to the drill rod structure, and the other end of the connecting block is connected to the drill bit through the eccentric member.

[0013] Furthermore, the mechanical pile-forming and square-hole-guiding device also includes a high-pressure water gun assembly, which is connected to the connecting block, and is used to be connected to an external water supply device, and is used to spray water onto the bottom and / or wall of the square hole.

[0014] Furthermore, the connection block is provided with a receiving cavity, and the receiving cavity is used to receive the high-pressure water gun assembly;

[0015] The high-pressure water gun assembly comprises a first high-pressure water gun and a second high-pressure water gun, wherein the first high-pressure water gun and the second high-pressure water gun are both used to be connected to the water supply device;

[0016] The first high-pressure water gun is disposed between adjacent protrusions, and the first high-pressure water gun is used to spray water toward the bottom of the square hole;

[0017] The second high-pressure water gun is used to spray water toward the hole wall of the square hole.

[0018] Further, the eccentric shaft assembly includes a first connecting member, a second connecting member and a third connecting member, one end of the second connecting member is connected to the first connecting member through a limiter, and the other end of the second connecting member is connected to the third connecting member through the limiter, so that the first connecting member is misaligned with respect to the third connecting member;

[0019] One end of the first connecting member away from the second connecting member is detachably connected to the drill rod structure;

[0020] One end of the third connecting member away from the second connecting member is detachably connected to the drill bit.

[0021] Further, the supporting vehicle body structure comprises a vehicle body and a lifting support assembly, and the vehicle body is connected to the lifting support assembly;

[0022] The lifting support assembly is connected to the drill rod structure, and the lifting support assembly is used to drive the drill rod structure to move along the extension direction of the lifting support assembly.

[0023] Further, the lifting support assembly includes a slideway, a moving member and a support plate, and the slideway is connected to the vehicle body;

[0024] The support plate is connected to the slideway through the moving member, and the support plate is connected to the drill rod structure.

[0025] Further, the drill rod structure includes a spiral drill rod and a driving member, the driving member is connected to the support plate, and the output end of the driving member is connected to the spiral drill rod, and the driving member is used to drive the spiral drill rod to rotate;

[0026] One end of the auger rod away from the driving member is connected to the eccentric shaft assembly.

[0027] Furthermore, the mechanical pile-forming and square-hole-drawing device further comprises a radar detector, which is connected to the support plate, and a probe of the radar detector is used to face the square hole.

[0028] The present invention can achieve the following beneficial effects:

[0029] In the first aspect, the present invention provides a mechanical pile-driving and square-hole-guiding device, comprising a supporting vehicle body structure, a drill rod structure, a drill bit and an eccentric shaft assembly, wherein the drill rod structure is connected to the supporting vehicle body structure, and one end of the drill rod structure is connected to the drill bit through the eccentric shaft assembly, and the drill rod structure is used to drive the eccentric shaft assembly to rotate; one end of the drill bit is connected to the eccentric shaft assembly, and the other end is provided with a bottom cone, and the side wall of the drill bit is provided with protrusions at intervals along the circumferential direction; the eccentric shaft assembly is used to drive the drill bit to dig square holes in the ground.

[0030] In the present invention, the supporting vehicle body structure is driven to the corresponding position, and then the drill rod structure is lowered so that the eccentric shaft assembly at the bottom drives the drill bit to rotate, thereby drilling a square hole in the ground. The drill bit includes a bottom cone portion at the bottom and three protrusions arranged on its side wall for digging the soil, thereby driving it to rotate and digging a square hole through the eccentric shaft assembly.

[0031] Compared with the prior art, the mechanical pile-forming and square-hole-guiding device provided by the present invention has an eccentric shaft assembly and a drill bit installed at the bottom of a drill rod structure. When in use, the drill rod structure drives the eccentric shaft assembly and the drill bit to rotate. Since a bottom cone portion is provided at the bottom of the drill bit and three protrusions are provided at intervals along the circumferential direction on its side wall, the drill bit can drill a square hole in the ground during the drilling process, thereby effectively overcoming the problems of uneven friction resistance and difficulty in drilling.

[0032] In summary, the present invention at least alleviates the problems of uneven friction and difficulty in drilling during the pile sinking process in the prior art, thereby avoiding the technical problems of reduced bearing capacity and poor stability of the pile foundation. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0034] Figure 1 A schematic diagram of the front view of the mechanical pile-forming and square-hole-guiding device provided in the first embodiment of the present invention;

[0035] Figure 2 A schematic diagram of the main structure of the drilling part of the mechanical pile-forming and square-hole-guiding device provided in the first embodiment of the present invention;

[0036] Figure 3 A schematic structural diagram of the eccentric shaft portion of the mechanical pile-forming and square-hole-guiding device provided in the first embodiment of the present invention;

[0037] Figure 4 A schematic diagram of the three-dimensional structure of the drill bit portion of the mechanical pile-forming and square-hole-guiding device provided in the first embodiment of the present invention;

[0038] Figure 5 A bottom view structural schematic diagram of the drill head portion of the mechanical pile-forming and square-hole-guiding device provided in the first embodiment of the present invention;

[0039] Figure 6 A bottom-up structural schematic diagram of the drill head portion of the mechanical pile-forming and square-hole-guiding device provided in the first embodiment of the present invention in use;

[0040] Figure 7 A schematic structural diagram of the drilling part of the mechanical pile-forming and square-hole-guiding device provided in the second embodiment of the present invention;

[0041] Figure 8This is a schematic structural diagram of the eccentric shaft portion of the mechanical pile-driving and square-hole-driving device provided in the second embodiment of the present invention.

[0042] Icons: 1-support body structure; 11-body; 12-lifting support assembly; 121-slide; 122-moving part; 123-support plate; 2-drill rod structure; 21-auger rod; 211-casing; 22-driving part; 3-drill bit; 31-bottom cone; 32-protrusion; 33-first arc surface; 34-second arc surface; 4-square hole; 5-radar detector; 6-high-pressure water gun assembly; 61-first high-pressure water gun; 62-second high-pressure water gun; 7-eccentric shaft assembly; 71-connecting block; 711-accommodating chamber; 72-eccentric part; 73-first connecting part; 74-second connecting part; 75-third connecting part. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0044] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0046] In the description of the present invention, it should be noted that the terms "upper", "lower", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the product of the invention is usually placed when in use, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0047] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0048] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "setting", "installation" and "connection" 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 it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0050] Embodiment 1

[0051] This embodiment provides a mechanical pile-forming and square hole-drawing device, referring to Figure 1 The mechanical pile-forming and square-hole-drawing device comprises a supporting vehicle body structure 1, a drill rod structure 2, a drill bit 3 and an eccentric shaft assembly 7. The drill rod structure 2 is connected to the supporting vehicle body structure 1, and one end of the drill rod structure 2 is connected to the drill bit 3 through the eccentric shaft assembly 7. The drill rod structure 2 is used to drive the eccentric shaft assembly 7 to rotate; one end of the drill bit 3 is connected to the eccentric shaft assembly 7, and the other end is provided with a bottom vertebral portion 31, and the side wall of the drill bit 3 is provided with protrusions 32 at intervals along the circumferential direction; the eccentric shaft assembly 7 is used to drive the drill bit 3 to dig a square hole 4 in the ground.

[0052] The embodiments of the present invention at least alleviate the problems of uneven friction and difficulty in drilling that occur during the pile sinking process in the prior art, thereby avoiding the technical problems of decreased bearing capacity and poor stability of the pile foundation.

[0053] In the embodiment of the present invention, the supporting vehicle body structure 1 is driven to the corresponding position, and then the drill rod structure 2 is lowered so that the eccentric shaft assembly 7 at the bottom drives the drill bit to rotate, thereby drilling a square hole in the ground. The drill bit 3 includes a bottom cone portion 31 at the bottom and three protrusions 32 arranged on its side wall for digging the soil, thereby driving it to rotate through the eccentric shaft assembly 7 and digging the square hole 4.

[0054] Compared with the prior art, the mechanical pile-forming and square-hole-guiding device provided in the embodiment of the present invention has an eccentric shaft assembly 7 and a drill bit 3 installed at the bottom of a drill rod structure 2. When in use, the drill rod structure 2 drives the eccentric shaft assembly 7 and the drill bit 3 to rotate. Since a bottom cone 31 is provided at the bottom of the drill bit 3 and three protrusions 32 are provided at intervals along the circumferential direction on its side wall, the drill bit 3 can drill a square hole 4 in the ground during the drilling process, thereby effectively overcoming the problems of uneven friction resistance and difficulty in drilling.

[0055] In an optional implementation manner of this embodiment, refer to Figure 4 , Figure 5 and Figure 6 The side wall of the drill bit 3 is provided with a first arc surface 33 and a second arc surface 34 , and the first arc surface 33 is connected to the second arc surface 34 to form a protrusion 32 .

[0056] Specifically: the side wall of the drill bit 3 is provided with a first curved surface 33 and a second curved surface 34, and the first curved surface 33 protrudes outward, while the second curved surface 34 is recessed inward, and the connecting end of the first curved surface 33 and the second curved surface 34 forms a protrusion 32, and the other end of the first curved surface 33 forms a recessed portion with another second curved surface 34; there are preferably three protrusions 32, and recessed portions are provided between the three protrusions 32; and the drill bit 3 presents a Lello triangle shape when viewed from above.

[0057] Further, refer to Figure 3 The eccentric shaft assembly 7 includes a connecting block 71 and an eccentric member 72 , one end of the connecting block 71 is connected to the drill pipe structure 2 , and the other end of the connecting block 71 is connected to the drill bit 3 through the eccentric member 72 .

[0058] Specifically: one end of the connecting block 71 is connected to the bottom of the drill rod structure 2, and the other end of the connecting block 71 is connected to the eccentric piece 72, and the other end of the eccentric piece 72 is inclined to one side and connected to the drill bit 3; when in use, the drill rod structure 2 drives the eccentric piece 72 to rotate through the connecting block 71, thereby driving the drill bit 3 to move with the eccentric piece 72 while rotating, so as to realize digging a square hole 4 in the ground.

[0059] Further, refer to Figure 3 The mechanical pile-forming and square-hole-guiding device further comprises a high-pressure water gun assembly 6, which is connected to the connecting block 71, and is used to be connected to an external water supply device, and is used to spray water toward the bottom and / or wall of the square hole 4.

[0060] Specifically: the high-pressure water gun assembly 6 is connected to the connecting block 71, and the high-pressure water gun assembly 6 is provided with a plurality of high-pressure water guns, and each high-pressure water gun is connected to an external water supply device, and the plurality of high-pressure water guns can spray water on the bottom and / or side of the drill bit 3, and then spray water on the rock part under the soil.

[0061] Further, refer to Figure 3 The connecting block 71 is provided with a receiving chamber 711, and the receiving chamber 711 is used to receive the high-pressure water gun assembly 6; the high-pressure water gun assembly 6 includes a first high-pressure water gun 61 and a second high-pressure water gun 62, and the first high-pressure water gun 61 and the second high-pressure water gun 62 are both used to be connected to the water supply device; the first high-pressure water gun 61 is arranged between adjacent protrusions 32, and the first high-pressure water gun 61 is used to spray water to the bottom of the square hole 4; the second high-pressure water gun 62 is used to spray water to the hole wall of the square hole 4.

[0062] Specifically: a receiving chamber 711 is provided inside the connecting block 71, and the receiving chamber 711 is preferably a triangular structure; the three groups of first high-pressure water guns 61 of the high-pressure water gun assembly 6 are respectively arranged at the three corners of the receiving chamber 711 in the vertical direction, and the three groups of first high-pressure water guns 61 are respectively located at the corresponding recessed positions to spray water to the bottom of the drill bit 3; and the second high-pressure water gun 62 is horizontally arranged to spray water from the horizontal direction to the side wall of the square hole 4, thereby achieving the effect of flushing gravel.

[0063] In an optional implementation manner of this embodiment, refer to Figure 1 The supporting vehicle body structure 1 includes a vehicle body 11 and a lifting support assembly 12 , the vehicle body 11 is connected to the lifting support assembly 12 ; the lifting support assembly 12 is connected to the drill rod structure 2 , and the lifting support assembly 12 is used to drive the drill rod structure 2 to move along the extension direction of the lifting support assembly 12 .

[0064] Specifically: the vehicle body 11 is connected to the lifting support assembly 12, and the lifting support assembly 12 is preferably rotatably connected to the vehicle body 11, so that after the vehicle body 11 is moved to the construction position, the lifting support assembly 12 can be supported in the vertical direction, so that the driven drill rod structure 2 connected to the lifting support assembly 12 is in a vertical state; when in use, the drill rod structure 2 is driven by the lifting support assembly 12 to move along the extension direction of the lifting support assembly 12, that is, the drill rod structure 2 moves in the vertical direction.

[0065] Further, refer to Figure 1 The lifting support assembly 12 includes a slide 121, a moving part 122 and a support plate 123. The slide 121 is connected to the vehicle body 11; the support plate 123 is connected to the slide 121 through the moving part 122, and the support plate 123 is connected to the drill pipe structure 2.

[0066] Specifically: one end of the slide 121 is rotatably connected to the vehicle body 11, and the slide 121 is connected to the vehicle body 11 through a diagonal support. When in use, the vehicle body 11 is stopped at the construction position, and then the slide 121 is rotated until it is in a vertical state. The moving member 122 slidably connected on the slide 121 is used for sliding connection along the slide 121, and the moving member 122 is preferably a sliding motor; and a support plate 123 is provided on the moving member 122, and the support plate 123 is connected to the drill rod structure 2 so that the drill rod structure 2 is distributed in the vertical direction.

[0067] Further, refer to Figure 1 The drill rod structure 2 includes a spiral drill rod 21 and a driving member 22. The driving member 22 is connected to the support plate 123, and the output end of the driving member 22 is connected to the spiral drill rod 21. The driving member 22 is used to drive the spiral drill rod 21 to rotate; one end of the spiral drill rod 21 away from the driving member 22 is connected to the eccentric shaft assembly 7.

[0068] Specifically: the driving member 22 is arranged on the top of the support plate 123, and the driving member 22 is preferably a driving motor, and the bottom output end of the driving member 22 is provided with an auger rod 21 in the vertical direction, and the bottom of the auger rod 21 is connected to the drill bit 3 through the eccentric shaft assembly 7.

[0069] Further, refer to Figure 1 The mechanical pile-forming and square-hole-guiding device further comprises a radar detector 5 , which is connected to the support plate 123 , and a probe of the radar detector 5 is used to face the square hole 4 .

[0070] Specifically: the radar detector 5 is connected to the support plate 123, and the probe of the radar detector 5 is used to face the square hole 4 to monitor the conditions in the square hole 4; and it should be noted that the radar detector 5 can be a geological perspective instrument and a ground penetrating radar.

[0071] It should be specifically noted that, refer to Figure 2 A sleeve 211 is provided inside the auger rod 21 along its extending direction, and the sleeve 211 does not rotate with the auger rod 21 . The water supply pipe and wires of the high-pressure water gun assembly 6 can be connected to external equipment through the sleeve 211 .

[0072] Embodiment 2

[0073] In an optional implementation manner of this embodiment, refer to Figure 7 or Figure 8The eccentric shaft assembly 7 includes a first connecting member 73, a second connecting member 74 and a third connecting member 75. One end of the second connecting member 74 is connected to the first connecting member 73 through a limiter, and the other end is connected to the third connecting member 75 through a limiter, so that the first connecting member 73 is misaligned relative to the third connecting member 75; one end of the first connecting member 73 away from the second connecting member 74 is detachably connected to the drill rod structure 2; one end of the third connecting member 75 away from the second connecting member 74 is detachably connected to the drill bit 3.

[0074] Specifically: one end of the first connecting member 73 is connected to the drill pipe structure 2, and the other end is connected to the second connecting member 74, and a limiting plug-in is provided between the first connecting member 73 and the second connecting member 74, so as to form an angle between the first connecting member 73 and the second connecting member 74 and then fix them; similarly, the second connecting member 74 is also connected to the third connecting member 75 through a corresponding limiting plug-in, so as to form an angle between the second connecting member 74 and the third connecting member 75; specifically, the first connecting member 73, the second connecting member 74 and the third connecting member 75 are all columnar structures, and polygonal slots are provided at the connection position, and the limiting plug-in can be a polygonal plug rod, so as to achieve insertion and fixing after aligning it with the polygonal slot.

[0075] Finally, it should be noted that: the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referenced to each other; the above embodiments in this specification are only used to illustrate the technical solution of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that: it is still possible to modify the technical solutions recorded in the aforementioned embodiments, or to replace some or all of the technical features therein with equivalents; and these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the present invention.

Claims

1. A mechanical pile-forming and square-hole-drawing device, characterized in that: The drill rod structure (2) comprises a supporting vehicle body structure (1), a drill rod structure (2), a drill bit (3) and an eccentric shaft assembly (7), wherein the drill rod structure (2) is connected to the supporting vehicle body structure (1), and one end of the drill rod structure (2) is connected to the drill bit (3) via the eccentric shaft assembly (7), and the drill rod structure (2) is used to drive the eccentric shaft assembly (7) to rotate; One end of the drill bit (3) is connected to the eccentric shaft assembly (7), and the other end is provided with a bottom cone (31), and the side wall of the drill bit (3) is provided with protrusions (32) at intervals along the circumferential direction; The eccentric shaft assembly (7) is used to drive the drill bit (3) to dig a square hole (4) in the ground.

2. The mechanical pile-making and square-hole-drawing device according to claim 1, characterized in that: The side wall of the drill bit (3) is provided with a first curved surface (33) and a second curved surface (34), and the first curved surface (33) and the second curved surface (34) are connected to form the protruding portion (32).

3. The mechanical pile-making and square-hole-drawing device according to claim 2, characterized in that: The eccentric shaft assembly (7) comprises a connecting block (71) and an eccentric member (72); one end of the connecting block (71) is connected to the drill rod structure (2), and the other end of the connecting block (71) is connected to the drill bit (3) via the eccentric member (72).

4. The mechanical pile-making and square-hole-drawing device according to claim 3 is characterized in that: It also comprises a high-pressure water gun assembly (6), the high-pressure water gun assembly (6) being connected to the connection block (71), the high-pressure water gun assembly (6) being used to be connected to an external water supply device, and the high-pressure water gun assembly (6) being used to spray water onto the bottom and / or the wall of the square hole (4).

5. The mechanical pile-making and square-hole-drawing device according to claim 4, characterized in that: The connecting block (71) is provided with a receiving cavity (711), and the receiving cavity (711) is used to receive the high-pressure water gun assembly (6); The high-pressure water gun assembly (6) comprises a first high-pressure water gun (61) and a second high-pressure water gun (62), wherein the first high-pressure water gun (61) and the second high-pressure water gun (62) are both used to be connected to the water supply device; The first high-pressure water gun (61) is disposed between adjacent protrusions (32), and the first high-pressure water gun (61) is used to spray water toward the bottom of the square hole (4); The second high-pressure water gun (62) is used to spray water toward the hole wall of the square hole (4).

6. The mechanical pile-making and square-hole-drawing device according to claim 2, characterized in that: The eccentric shaft assembly (7) comprises a first connecting member (73), a second connecting member (74) and a third connecting member (75); one end of the second connecting member (74) is connected to the first connecting member (73) via a limiting member, and the other end of the second connecting member (74) is connected to the third connecting member (75) via the limiting member, so that the first connecting member (73) is misaligned relative to the third connecting member (75); One end of the first connecting member (73) away from the second connecting member (74) is detachably connected to the drill rod structure (2); One end of the third connecting member (75) away from the second connecting member (74) is detachably connected to the drill bit (3).

7. The mechanical pile-making and square-hole-driving device according to any one of claims 1 to 6, characterized in that: The supporting vehicle body structure (1) comprises a vehicle body (11) and a lifting support assembly (12), wherein the vehicle body (11) is connected to the lifting support assembly (12); The lifting support assembly (12) is connected to the drill rod structure (2), and the lifting support assembly (12) is used to drive the drill rod structure (2) to move along the extension direction of the lifting support assembly (12).

8. The mechanical pile-making and square-hole-drawing device according to claim 7, characterized in that: The lifting support assembly (12) comprises a slideway (121), a moving part (122) and a support plate (123); the slideway (121) is connected to the vehicle body (11); The support plate (123) is connected to the slideway (121) via the moving member (122), and the support plate (123) is connected to the drill rod structure (2).

9. The mechanical pile-making and square-hole-drawing device according to claim 8, characterized in that: The drill rod structure (2) comprises a spiral drill rod (21) and a driving member (22), wherein the driving member (22) is connected to the support plate (123), and an output end of the driving member (22) is connected to the spiral drill rod (21), and the driving member (22) is used to drive the spiral drill rod (21) to rotate; One end of the auger rod (21) away from the driving member (22) is connected to the eccentric shaft assembly (7).

10. The mechanical pile-making and square-hole-drawing device according to claim 9, characterized in that: It also comprises a radar detector (5), the radar detector (5) being connected to the support plate (123), and the probe of the radar detector (5) being used to face the square hole (4).

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