Telescopic two-wheel hydraulic square pile drill bit
By designing a telescopic two-wheel hydraulic square pile drill bit, the adjustable anti-rotating frame and replaceable excavation wheel components, the various sizes of square pile drill bits in the existing technology are solved, and the drill bits are multi-adapted and the flexibility of construction is achieved.
Patent Information
- Application Number
- CN202422063279.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-23
- Publication Date
- 2025-06-20
- Estimated Expiration
- 2034-08-23
AI Technical Summary
Due to the large pile sizes of existing square pile drill bits, there are many types of drill bits, which are difficult to manage, have high management costs, and have long production cycles, making it difficult to mass production or purchase in batches.
A telescopic two-wheel hydraulic square pile drill bit is designed. By setting a length adjustment bracket and a width adjustment bracket, the size of the anti-rotating frame is adjustable and adapted to square piles of different sizes. The processing of different square pile sizes is achieved by replacing the excavation wheel components or adding extended excavation components.
The multi-adaptation capability of square pile drill bits is achieved, the types of drill bits are reduced, management and production are simplified, costs are reduced, and construction flexibility and efficiency are improved.
Smart Images
Figure CN223003982U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of drill bits, in particular to a telescopic two-wheel hydraulic square pile drill bit. Background Art
[0002] In the construction of common square piles, the common construction method is to first use a round drill bit to pre-drill holes, and process the square pile into a shape similar to a plum blossom pile. However, this cannot form a standard rectangle, and there will be parts to be trimmed at the four corners that cannot be processed by the round drill bit. At this time, we developed a special square pile drill bit for trimming and processing. However, in the original construction method, it is necessary to drill multiple prefabricated round holes in the square pile. And when the first round hole is drilled, when drilling the remaining round holes, since there is no soil and stone on one side of the drilled round hole to attach the drill bit to the wall, it is easy to have defects such as the inclination of the drilling round drill bit, resulting in complex subsequent construction processes and difficult construction.
[0003] Therefore, we came up with the idea of developing a square pile drill bit that can complete the deep hole processing of the square pile by only drilling one round hole in the square pile in the construction method. This is the original intention of developing the two-wheel square pile drill bit. During the production process of the two-wheel square pile drill bit, the previous square pile drill bit corresponded to one type of square pile drill bit for one size of pile. However, the sizes of square piles are indeed diverse, such as some common pile type sizes (square pile size length × width) below: 1.5 m × 2 m, 1.5 m × 2.25 m, 1.5 m × 2.5 m, 1.5 m × 2.75 m, 1.75 m × 2 m, 1.75 m × 2.25 m, 1.75 m × 2.5 m, 1.75 m × 2.75 m, 1.8 m × 2 m, 1.8 m × 2.4 m, 1.8 m × 2.6 m, 2 m × 2 m, 2 m × 2.25 m, 2 m × 2.5 m, 2 m × 2.75 m, 2 m × 3 m, 2.25 m × 2 m, 2.25 m × 2.25 m, 2.25 m × 2.5 m, 2.25 m × 2.75 m, 2.25 m × 3 m.
[0004] As above, if one type of pile size corresponds to one type of drill bit, and there will be situations where multiple pile sizes need to be constructed simultaneously during on-site construction. This has caused difficulties in management, high management costs, long production cycles, and difficulties in mass production and mass procurement for both the producers and users of square drill bits due to the large variety of square pile drill bit sizes. Against this background, it is necessary to develop a square pile drill bit with multiple adaptability capabilities to reduce the types of square pile drill bits. Summary of the Invention
[0005] Aiming at the deficiencies of the prior art, the utility model provides a telescopic two-wheel hydraulic square pile drill bit, which solves the problems in the prior art such as the large variety of square pile drill bit sizes, difficult management, high management costs, long production cycles, and difficulties in mass production and mass procurement due to the large number of pile sizes.
[0006] To achieve the above object, the utility model is realized by the following technical solutions:
[0007] The utility model discloses a telescopic two-wheel hydraulic square pile drill bit, which comprises a frame and a digging component arranged on the frame. A top plate is arranged at the top of the frame. Parallel guide plates are arranged on the top plate. An anti-rotation frame is arranged on the guide plates. The anti-rotation frame comprises a length adjustment bracket slidably arranged on the guide plates. A width adjustment bracket is arranged on the length adjustment bracket. By adjusting the length adjustment bracket and / or the width adjustment bracket, the length dimension and / or the width dimension of the anti-rotation frame after adjustment are adapted to the length and / or the width of the dug square pile.
[0008] Preferably, the width of the top plate is greater than the distance between the two guide plates. The length adjustment brackets are slidably arranged at both ends of the guide plates and are correspondingly arranged. The two side plates of the length adjustment bracket are placed on the top plate outside the guide plates. The length adjustment bracket moves along the guide plates to adjust the distance between the two length adjustment brackets and is fixed by screws.
[0009] Preferably, a guide groove and a plurality of fixing screw holes are arranged along the length direction of the guide plate. Fixing screw through holes Ⅰ and anti-falling bolts penetrating through are arranged on the two side plates of the length adjustment bracket. The head of the anti-falling bolt extends into the guide groove.
[0010] Preferably, width adjustment brackets are respectively arranged at both ends of the cross plate of the length adjustment bracket. The width adjustment brackets move along the width direction of the cross plate of the length adjustment bracket to adjust the distance between the two width adjustment brackets and are fixed by screws.
[0011] Preferably, a plurality of fixing screw threaded holes are arranged along the width direction of the cross plate of the length adjustment bracket. Fixing screw through holes Ⅱ are arranged on the cross plate of the width adjustment bracket.
[0012] Preferably, an extended digging component is installed on the digging component. The outer diameter of the extended digging component is greater than or equal to that of the digging component. The extended digging component is arranged on one side or both sides of the digging component.
[0013] Preferably, a connecting square head is arranged at the center of the top of the top plate. Square head reinforcing plates fixed to the top plate are arranged on the side wall of the connecting square head. Both ends of the two guide plates are connected through guide plate reinforcing plates. A top plate reinforcing plate is arranged between the bottom of the top plate and the frame. A connecting reinforcing plate is transversely arranged at the top of the connection between the guide plate reinforcing plate and the guide plate.
[0014] Preferably, the frame includes a vertical plate fixed to the bottom of the top plate and hollow inside. An installation cylinder is penetrated through the vertical plate. A hydraulic motor is arranged inside the installation cylinder. The hydraulic motor is connected to a speed reducer. The speed reducer is fixed on a conversion mounting plate. The conversion mounting plate is fixed at the conversion mounting plate stations at both ends of the installation cylinder. The excavation component is fixed at the rotation positioning end of the speed reducer.
[0015] Preferably, an installation vertical plate is arranged at one end of the excavation component for installing and expanding the excavation component. A sealing mounting plate is arranged at the connection part inside the excavation component and the expanding excavation component.
[0016] Preferably, the excavation component includes an excavation wheel body. Excavation elements are arranged on the excavation wheel body. The excavation elements are arranged obliquely on the excavation wheel body, and the excavation elements near both ends of the excavation wheel body are arranged outward at an angle; or, the excavation elements are arranged in a "V" shape on the excavation wheel body; or, the excavation elements are arranged in a gradually increasing manner on the excavation wheel body; or, the excavation elements are arranged in a regular spiral or irregular spiral on the excavation wheel body, and the excavation elements near both ends of the excavation wheel body are arranged outward at an angle; the arrangement mode of the excavation elements on the expanding excavation component is the same as that of the excavation elements on the excavation wheel body.
[0017] The utility model has the following beneficial effects:
[0018] The utility model adjusts the existing square pile drill bit to a square pile drill bit that can process different square pile sizes by replacing the excavation wheel component or adding one or two expanding excavation components, making the square pile drill bit a flexible and combinable general-purpose square pile construction equipment. At the same time, the anti-rotation frame is set to be adjustable in length and width dimensions, with a certain coverage in terms of the size setting compared to the existing drill bit. Due to this size coverage, the local outer diameter of one side of the excavation wheel component can be increased to realize the processing of special-shaped square piles, such as the processing of "T"-shaped square piles, which further reflects the versatility and flexibility of this general-purpose square pile drill bit. Description of the Drawings
[0019] Figure 1 It is a structural schematic diagram of the utility model (small pile square drill);
[0020] Figure 2 is Figure 1 exploded view of;
[0021] Figure 3 It is a connection structural schematic diagram of the frame, the top plate and the guide plate;
[0022] Figure 4 It is a connection schematic diagram of the length adjustment bracket and the width adjustment bracket;
[0023] Figure 5It is a schematic structural diagram of a length adjustment bracket;
[0024] Figure 6 It is a schematic structural diagram of a width adjustment bracket;
[0025] Figure 7 It is a schematic structural diagram of a large pile kelly bar;
[0026] Figure 8 It is an instruction for the size adjustment of the anti-rotation bracket on the large pile kelly bar ( Figure 7 top view);
[0027] Figure 9 It is Figure 8 longitudinal sectional view shown by the dotted line in
[0028] Figure 10 It is a sectional view of the excavation component;
[0029] Figure 11 It is a schematic structural diagram of a small pile kelly bar equipped with an extended excavation component;
[0030] Figure 12 It is a schematic structural diagram of a large pile kelly bar equipped with an extended excavation component;
[0031] Figure 13 It is a schematic structural diagram of the kelly bit when processing a special-shaped pile "T" - shaped pile;
[0032] In the figure: top plate 1, guide plate 2, length adjustment bracket 3, width adjustment bracket 4, guide groove 5, fixing screw hole 6, fixing screw through hole I 7, anti - dropping bolt 8, fixing screw thread hole 9, fixing screw through hole II 10, connecting square head 11, square head reinforcement plate 12, guide plate reinforcement plate 13, top plate reinforcement plate 14, connecting reinforcement plate 15, vertical plate 16, installation cylinder 17, hydraulic motor 18, reducer 19, conversion installation plate 20, installation vertical plate 21, sealing installation plate 22, excavation wheel body 23, excavation element 24, extended excavation component 25, excavation component 26, detection line hole 27, maintenance window 28. Specific embodiments
[0033] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0034] If not specifically specified, the technical means used in the implementation examples are conventional means well known to those skilled in the art.
[0035] Refer to Figures 1-13, the present utility model discloses a telescopic two-wheel hydraulic square pile drill bit, which includes a frame and an excavation component 26 arranged on the frame. A top plate 1 is provided at the top of the frame, and parallel guide plates 2 are arranged on the top plate 1. An anti-rotation frame is arranged on the guide plates 2. The anti-rotation frame includes a length adjustment bracket 3 slidably arranged on the guide plates 2, and a width adjustment bracket 4 is arranged on the length adjustment bracket 3. An extended excavation component 25 is installed on the excavation component 26. The outer diameter of the extended excavation component 25 is greater than or equal to that of the excavation component 26. The extended excavation component 25 is arranged on one side or both sides of the excavation component 26. By adjusting the length adjustment bracket 3 and / or the width adjustment bracket 4, the length dimension and / or width dimension of the anti-rotation frame after adjustment is adapted to the length and / or width of the square pile to be excavated. The adjustment of the length adjustment bracket and the width adjustment bracket is flexible. During the adjustment process, connection and fixation are achieved through screws. The adjustment principle of the length and width is to move the positions of the length adjustment bracket and the width adjustment bracket respectively, so that the contour dimensions of the length and width of the anti-rotation frame are slightly smaller than the length and width dimensions of the square pile to be processed, which is equivalent to being slightly smaller than the excavation outer diameter of the excavation component on the square pile drill bit and the distance between the outer end faces of the two excavation components, so as to realize the positioning and anti-rotation of the square pile drill bit. As another implementation scheme, only the length adjustment bracket or the width adjustment bracket can be adjusted to make the length or width of the anti-rotation frame adapt to the length or width of the square pile (that is, the length or width dimension of the anti-rotation frame is slightly smaller than the length or width dimension of the square pile), and the invention purpose of the present utility model can also be achieved.
[0036] It should be noted that different-sized excavation components can be replaced (changing the outer diameter of the excavation component and adding an extended excavation component to change the length of the excavation component) to realize the processing of square piles of different sizes. At the same time, the processing of special-shaped square piles can be realized by installing the extended excavation component on one side of the excavation component to be larger than the excavation diameter of the existing excavation component, such as the processing of "T"-shaped square piles, as Figure 13 shown. Through the anti-rotation frame with adjustable length and width, that is, the length adjustment bracket and the width adjustment bracket can adjust the length and width of the anti-rotation frame, the positioning and anti-rotation of the square drill bit can be realized during the processing of square piles of different lengths and widths. There is no need to replace parts like traditional square drill bits to achieve positioning and anti-rotation, which increases the flexibility and adaptability of the functions of the square drill bit. The adjustment of its anti-rotation frame is usually that the outer dimension of the anti-rotation frame is smaller than the excavation contour of the square drill bit, so that the excavation components used in the present invention can be replaced with different-sized excavation components according to needs. At the same time, extended excavation components can be installed according to needs to realize the processing of square piles of different sizes. The size adjustment of the anti-rotation frame is as Figure 8 shown.
[0037] Furthermore, the width of the top plate 1 is greater than the distance between the two guide plates 2, so that a platform for placing the length adjustment bracket is left outside the guide plates. The length adjustment brackets 3 are slidably arranged at both ends of the guide plates 2 and are correspondingly arranged. The two side plates of the length adjustment bracket 3 are placed on the top plate 1 outside the guide plates 2. The length adjustment brackets 3 move along the guide plates 2 to adjust the distance between the two length adjustment brackets 3 and are fixed by screws.
[0038] Furthermore, each of the guide plates 2 is provided with a guide groove 5 and a plurality of fixing screw holes 6 along its length direction. As one implementation manner, the fixing screw holes 6 are arranged in two rows, and the guide groove is arranged between the two rows of fixing screw holes and is preferably arranged in two. The two side plates of a length adjustment bracket respectively correspond to one guide groove. Fixing screw through holes Ⅰ7 are arranged on the two side plates of the length adjustment bracket 3, and anti-falling bolts 8 are arranged therethrough. The heads of the anti-falling bolts 8 extend into the guide groove 5. The anti-falling bolts 8 can be internal hexagon head bolts, and the bolt heads are circular and extend into the guide groove. When adjusting the length adjustment bracket, it moves along the guide groove, which plays a guiding role and an anti-falling role during length adjustment, preventing it from falling off the top plate and playing a safety protection role. The positions of the fixing screw holes 6 correspond to the positions of the fixing screw through holes Ⅰ7 during the movement of the length adjustment bracket. After the two length adjustment brackets are adjusted, the fixing screw holes 6 and the fixing screw through holes Ⅰ7 correspond, and then the guide plates and the two side plates of the length adjustment bracket can be directly fixed by screws.
[0039] Furthermore, width adjustment brackets 4 are respectively arranged at both ends of the cross plate of the length adjustment bracket 3. A baffle is connected between the two side plates of the length adjustment bracket. The top surface of the baffle is fixed to the cross plate. The width adjustment brackets 4 move along the width direction of the cross plate of the length adjustment bracket 3 to adjust the distance between the two width adjustment brackets 4 and are fixed by screws. The width adjustment bracket is mainly in a triangular shape surrounded by two side plates and a cross plate and is adapted to both ends of the length adjustment bracket.
[0040] Furthermore, a plurality of fixing screw threaded holes 9 are arranged on the cross plate of the length adjustment bracket 3 along its width direction, and fixing screw through holes Ⅱ10 are arranged on the cross plate of the width adjustment bracket 4. As one implementation manner, the fixing screw threaded holes 9 on the cross plate are arranged in multiple rows. When the width adjustment bracket is being adjusted, after the fixing screw through holes Ⅱ10 on it correspond to the fixing screw threaded holes 9, it can be fixed by screws.
[0041] Furthermore, nuts can be welded on the inner side wall of the guide plate at the position of the fixing screw holes 6, facilitating the fixation of the length adjustment bracket and the guide plate through screws. Similarly, nuts can be welded on the bottom surface of the cross plate of the length adjustment bracket at the position of the fixing screw threaded holes 9, facilitating the fixation of the length adjustment bracket and the width adjustment bracket through screws. Reinforcing plates can be arranged on the length adjustment bracket and the width adjustment bracket as needed to increase their strength.
[0042] Furthermore, a connecting square head 11 is arranged at the center of the top of the top plate 1. The connecting square head is connected to the working square head of the rotary drilling rig to realize the operation installation and fixation of the entire square pile drill bit. Square head reinforcing plates 12 fixed to the top plate 1 are arranged on the side wall of the connecting square head 11. The number and arrangement positions of the square head reinforcing plates can be set as needed. The two ends of the two guide plates 2 are connected through guide plate reinforcing plates 13. The guide plate reinforcing plates are fixed at the two ends of the guide plate, and the side walls are flush with the end faces of the top plate. A top plate reinforcing plate 14 is arranged between the bottom of the top plate 1 and the machine frame (vertical plate 16). A connecting reinforcing plate 15 is horizontally arranged at the top of the connection between the guide plate reinforcing plate 13 and the guide plate 2. The main purpose of arranging the reinforcing plates in the present invention is to increase the stability and strength of the entire device, and the number and arrangement positions can be set as needed.
[0043] Furthermore, a detection wire hole 27 is also arranged on the top plate. The position of the detection wire hole 27 is close to the outlet of the square drill oil pipe. A steel wire rope can be connected here. When the entire drill bit moves downward, the slack of the steel wire rope here is used to judge the take-up and pay-out allowance of the hydraulic oil pipe, preventing strong pulling on the hydraulic oil pipe and playing a protective role for the hydraulic oil pipe. This part is prior art and will not be elaborated in detail. A lifting hole for lifting is arranged on the square head reinforcing plate connected to the connecting square head 11.
[0044] Furthermore, the machine frame includes a vertical plate 16 fixed to the bottom of the top plate 1 and hollow inside, through which hydraulic oil pipes and other cables lead to the outside of the square drill bit. An installation cylinder 17 is penetrated through the vertical plate 16. The two ends of the installation cylinder 17 are conversion installation plate installation stations. Excavation components 26 are arranged at the two ends of the installation cylinder 17. An inspection window 28 is also arranged on the installation cylinder 17. A hydraulic motor 18 is arranged inside the installation cylinder 17. The hydraulic motor 18 is connected to a speed reducer 19. The speed reducer 19 is fixed on a conversion installation plate 20. The conversion installation plate 20 is fixed at the conversion installation plate stations at the two ends of the installation cylinder 17. The excavation component 26 is fixed at the rotation positioning end of the speed reducer 19. The end of the installation cylinder extends into the excavation component. The speed reducer selects a hoisting speed reducer. The conversion installation plate is of a plate structure, and connecting screw holes and positioning stops are arranged thereon for positioning and connecting between components.
[0045] Furthermore, an installation vertical plate 21 is provided at one end of the excavation component 26 for installing the extended excavation component 25. A sealing installation plate 22 is provided inside the excavation component 26 at the connection with the extended excavation component 25. The excavation component 26 is of a cylindrical structure as a whole. The excavation component 26 includes an excavation wheel body 23. Inside the excavation wheel body 23, there is a vertical plate connected to the rotating end of the reduction gear. On the side of the vertical plate facing outward, there is a cylindrical structure (reinforcement cylinder 29) and an installation vertical plate 21 connected to the extended excavation component, so that one end of the excavation component 26 connected to the extended excavation component forms a cylindrical structure, greatly enhancing its own structural strength.
[0046] Furthermore, screw holes for screw connection are provided on the installation vertical plate 21 for connecting the extended excavation component. A sealing installation plate 22 is provided inside the reinforcement cylinder 29. The sealing installation plate here is used to prevent soil and stones from entering the interior of the excavation component during the operation of the square drill bit, protecting the reduction gear located inside. On the other side of the vertical plate inside the excavation wheel body, a reinforcement plate is provided to enhance the strength of the excavation wheel body.
[0047] Furthermore, excavation elements 24 are provided on the excavation wheel body 23. The excavation elements 24 can be finished bullet heads or other hard protrusions; the excavation elements 24 are arranged obliquely on the excavation wheel body 23, and the excavation elements 24 near both ends of the excavation wheel body 23 are arranged at an angle outward; or, the excavation elements 24 are arranged in a "V" shape on the excavation wheel body 23; or, the excavation elements 24 are arranged in a gradually increasing manner on the excavation wheel body 23; or, the excavation elements 24 are arranged in a regular spiral or an irregular spiral on the excavation wheel body 23, and the excavation elements 24 near both ends of the excavation wheel body 23 are arranged at an angle outward, and can be specifically set according to needs.
[0048] Furthermore, the arrangement of the excavation elements 24 on the extended excavation component 25 is the same as that of the excavation elements 24 on the excavation wheel body 23. The extended excavation component is also of a cylindrical structure like the excavation component. Excavation elements are provided on its outer surface, and reinforcement plates and reinforcement rings are provided inside for strength enhancement. An installation station of its own is provided on one side, and through holes for screw connection are provided here for installation and connection with the excavation wheel body of the excavation component. The other side of the extended excavation component is an open structure, and no sealing installation plate is provided on it. The sealing installation plate of the square drill bit is still located on the excavation component.
[0049] The setting situation of the extended excavation component on the excavation component and the adjustment situation of the anti-rotation frame are as Figures 11-13 、 Figure 7 shown.
[0050] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.
[0051] The above-described embodiments are only descriptions of the preferred modes of the present utility model, and do not limit the scope of the present utility model. Without departing from the design spirit of the present utility model, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present utility model shall fall within the protection scope determined by the claims of the present utility model.
Claims
1. A telescopic two-wheel hydraulic pile drill, comprising a frame and an excavating component (26) arranged on the frame, characterized in that: A top plate (1) is arranged on the top plate (1), mutually parallel guide plates (2) are arranged on the top plate (1), an anti-rotation frame is arranged on the guide plate (2), the anti-rotation frame comprises a length adjustment bracket (3) slidably arranged on the guide plate (2), a width adjustment bracket (4) is arranged on the length adjustment bracket (3), and the adjusted length dimension and / or width dimension of the anti-rotation frame is adapted to the length and / or width of the excavated pile by adjusting the length adjustment bracket (3) and / or the width adjustment bracket (4).
2. A telescopic two-wheel hydraulic square pile drill according to claim 1, characterized in that: The width of the top plate (1) is greater than the spacing between the two guide plates (2); the length adjustment bracket (3) is slidably arranged at the two ends of the guide plate (2) and is correspondingly arranged; the two side plates of the length adjustment bracket (3) are placed on the top plate (1) outside the guide plate (2); the length adjustment bracket (3) moves along the guide plate (2) to adjust the spacing between the two length adjustment brackets (3) and is fixed by screws.
3. A telescopic two-wheel hydraulic square pile drill according to claim 2, characterized in that: The guide plate (2) is provided with a guide groove (5) and a plurality of fixing screw holes (6) along its length direction, and the two side plates of the length adjustment bracket (3) are provided with fixing screw through holes I (7) and anti-drop bolts (8) penetrating therethrough, and the heads of the anti-drop bolts (8) extend into the guide groove (5).
4. The telescopic two-wheel hydraulic pile drill according to claim 1, characterized in that: The width adjustment brackets (4) are respectively arranged at both ends of the transverse plate of the length adjustment bracket (3); the width adjustment brackets (4) move along the width direction of the transverse plate of the length adjustment bracket (3) to adjust the distance between the two width adjustment brackets (4), and are fixed by screws.
5. The telescopic two-wheel hydraulic square pile drill according to claim 4, characterized in that: The transverse plate of the length adjustment bracket (3) is provided with a plurality of fixing screw threads (9) along its width direction, and the transverse plate of the width adjustment bracket (4) is provided with a fixing screw through hole II (10).
6. A telescopic two-wheel hydraulic square pile drill according to any one of claims 1 to 5, characterized in that: An extended excavation component (25) is installed on the excavation component (26). The outer diameter of the extended excavation component (25) is greater than or equal to that of the excavation component (26). The extended excavation component (25) is arranged on one side or both sides of the excavation component (26).
7. The telescopic two-wheel hydraulic square pile drill according to claim 1, characterized in that: A connecting square head (11) is arranged at the center of the top of the top plate (1), a square head reinforcing plate (12) fixed to the top plate (1) is arranged on the side wall of the connecting square head (11), the two ends of the two guide plates (2) are connected by a guide plate reinforcing plate (13), a top plate reinforcing plate (14) is arranged between the bottom of the top plate (1) and the frame, and a connecting reinforcing plate (15) is transversely arranged at the top of the connection between the guide plate reinforcing plate (13) and the guide plate (2).
8. The telescopic two-wheel hydraulic pile drill according to claim 1, characterized in that: The frame comprises a vertical plate (16) fixed at the bottom of the top plate (1) and having a hollow interior, a mounting tube (17) penetrating the vertical plate (16), a hydraulic motor (18) being arranged in the mounting tube (17), the hydraulic motor (18) being connected to a reducer (19), the reducer (19) being fixed on a conversion mounting plate (20), the conversion mounting plate (20) being fixed at the conversion mounting plate stations at both ends of the mounting tube (17), and the excavation component (26) being fixed at the rotation positioning end of the reducer (19).
9. The telescopic two-wheel hydraulic pile drill according to claim 6, characterized in that: One end of the excavating component (26) for mounting the extended excavating component (25) is provided with a mounting vertical plate (21), and a sealing mounting plate (22) is provided inside the excavating component (26) and at the connection with the extended excavating component (25).
10. The telescopic two-wheel hydraulic square pile drill according to claim 6, characterized in that: The excavating component (26) comprises an excavating wheel body (23), on which an excavating element (24) is provided, wherein the excavating element (24) is arranged obliquely on the excavating wheel body (23), and the excavating elements (24) near the two ends of the excavating wheel body (23) are arranged outward at an angle; or, the excavating elements (24) are arranged on the excavating wheel body (23) in a "V" shape; or, the excavating elements (24) are arranged on the excavating wheel body (23) in a progressively increasing manner; or, the excavating elements (24) are arranged on the excavating wheel body (23) in a spiral regular arrangement or a spiral irregular arrangement, and the excavating elements (24) near the two ends of the excavating wheel body (23) are arranged outward at an angle; the arrangement of the excavating elements (24) on the extended excavating component (25) is the same as the arrangement of the excavating elements (24) on the excavating wheel body (23).