Construction equipment and method for pile driving

Abstract

A construction device for pile planting includes a base platform, and: a main rod movably mounted on the base platform, the lower end of the main rod being rotatably connected to the base platform via a main shaft, the main rod having an axially movable support member; a diagonal bracing assembly including a telescopic diagonal brace, one end of the diagonal brace being rotatably connected to the base platform and the other end being rotatably connected to the main rod; a drilling assembly including a drilling host, a drill bit, and a drill rod; and a pile planting assembly including a pile planting frame, the lower part of which has a secondary shaft rotatably and slidably connected to a guide rail. This solution can plant both vertical and inclined piles, and provides good pile planting quality and convenient construction. This disclosure also mentions a construction method for pile planting.

Description

Technical Field

[0001] This invention relates to the technical field of pile planting in geotechnical engineering, specifically to a construction device for pile planting and a construction method for pile planting. Background Technology

[0002] The construction of precast concrete piles mainly adopts the hammering and static pressure methods, which have a certain soil squeezing effect, which has a significant impact on the surrounding environment and causes some damage to the pile body. In recent years, some non-soil squeezing (semi-soil squeezing) construction methods have emerged, which involve drilling (pre-mixing) holes and then inserting precast piles. This method effectively solves the soil squeezing effect and other related problems in the traditional precast pile construction process and has a very good development prospect.

[0003] Current methods for implanting piles ensure that the piles are vertical during the implantation process, meaning the pile is driven perpendicular to the ground. However, in some construction scenarios, the pile needs to be driven at an angle to the vertical, resulting in inclined piles. Currently, inclined piles are implanted using a hammer-driven method, which still suffers from soil displacement and struggles to penetrate certain interlayered geological formations. Furthermore, existing methods typically use separate drilling and pile-planting equipment, leading to high equipment costs and requiring multiple compactions of the construction site, causing damage and safety hazards. Additionally, using different equipment for drilling and pile planting results in significant concentricity deviations, frequently leading to misalignment and failure to meet verticality and elevation requirements. Summary of the Invention

[0004] The purpose of this invention is to provide a construction device for pile planting that can implant both vertical and inclined piles, and that produces high-quality piles and is easy to construct.

[0005] To address the above problems, the present invention provides a construction device for pile planting, comprising:

[0006] The base platform is provided with guide rails arranged laterally;

[0007] The main rod has a main rotating shaft at its lower end, which is rotatably and slidably connected to the guide rail. The rotation axis of the main rotating shaft is set horizontally. The main rod is provided with a support member that can move along the axial direction of the main rod.

[0008] The diagonal bracing assembly includes a telescopic diagonal brace, one end of which is rotatably connected to a base platform and the other end of which is rotatably connected to the main rod. The diagonal brace is used to drive the rotation of the main rod.

[0009] A drilling assembly includes a drilling host, a drill bit, and a drill rod. The drilling host is connected to the support member. The upper end of the drill rod is connected to the drilling host and the lower end is connected to the drill bit. The drill rod is arranged parallel to the main rod. The drilling host is used to drive the rotation of the drill rod.

[0010] A stake planting assembly includes a stake planting frame, the lower part of which is provided with a secondary rotating shaft, which is rotatably and slidably connected to a guide rail.

[0011] Compared to existing technologies, the above solution allows for adjustment of the diagonal bracing rods of the diagonal bracing assembly, enabling the main rod to rotate relative to the base platform to the desired angle. This allows the drilling assembly to drill holes in the ground parallel to the main rod. After drilling is complete, the drill rod and drill bit are removed from the drilling location, and the main rod is moved aside. By moving the pile planting frame of the pile planting assembly above the drilling location and rotating the frame to align the precast pile on it with the drilling location, the precast pile can be inserted into the drilling location, ultimately achieving the construction requirements for planting vertical or inclined piles. Furthermore, since both the drilling assembly and the pile planting assembly are located on the same base platform, the coaxiality between the drilling direction and the pile planting direction can be maintained well, effectively improving the pile planting quality and reducing construction difficulty.

[0012] Preferably, the guide rail is groove-shaped, and both the main rotating shaft and the secondary rotating shaft are movably connected inside the guide rail. The main rotating shaft and the secondary rotating shaft are respectively provided with a main locking pin and a secondary locking pin. The main locking pin is used to connect to the guide rail to fix the main rotating shaft relative to the guide rail, and the secondary locking pin is used to connect to the guide rail to fix the secondary rotating shaft relative to the guide rail.

[0013] Preferably, the pile-planting frame is equipped with two opposing clamping cylinders. The cylinder rod of the clamping cylinder is equipped with clamping plates for clamping the precast pile, so that the clamping cylinder can drive the clamping plates to clamp the precast pile, ensuring a more stable pile-planting process.

[0014] Preferably, the above solution further includes a drill casing host and a casing, wherein the drill casing host is connected to the support member, the upper end of the casing is connected to the drill casing host, the casing is sleeved on the outside of the drill rod, and the drill casing host is used to drive the rotation of the casing.

[0015] Preferably, the above solution also includes a walking assembly, which includes a first walking frame arranged in the front-back direction and a second walking frame arranged in the left-right direction. The lower part of the base platform is provided with a first receiving frame slidably connected to the first walking frame and a second receiving frame slidably connected to the second walking frame. The first and second walking frames are used to guide the base platform to move in the front-back direction and the left-right direction, so that the base platform can be easily moved to different construction positions.

[0016] Preferably, the diagonal bracing assembly includes two diagonal bracing rods, the upper ends of which are rotatably connected to the left and right sides of the main rod, respectively, and the lower ends of which are rotatably connected to the base platform. The upper and / or lower ends of the diagonal bracing rods are provided with telescopic hydraulic cylinders for adjusting the length of the diagonal bracing rods, thereby ensuring that the diagonal bracing assembly has more stable control over the rotation angle of the main rod.

[0017] Preferably, the outer wall of the drill rod is provided with stirring blades, and the inside of the drill rod is provided with hydraulic pipelines and slurry pipelines arranged along the axial direction, both of which are connected to the drill bit.

[0018] Preferably, the outer side of the drill bit is movably connected to at least two expanding wings, the inside of the drill bit is provided with a hydraulic chamber connected to a hydraulic pipeline, the hydraulic chamber is used to control the expansion or retraction of the expanding wings, and the drill bit is provided with an outlet connected to a slurry pipeline.

[0019] Preferably, the base platform is also provided with a lifting assembly, which includes a telescopic boom and a hook connected to the upper end of the boom.

[0020] This invention also provides a construction method for pile planting, the specific steps of which include:

[0021] S1. Move the base platform to the drilling position to be constructed, and adjust the extension length of the diagonal brace to drive the main rod to rotate to the required angle. At this time, the drill rod and the casing remain parallel to the main rod.

[0022] S2. Start the drill pipe host and drill casing host. The drill pipe host and drill casing host drive the drill pipe and casing to rotate in the same direction, and then push the support to move downward, so that the drill pipe host drives the drill pipe and drill bit to drill downward at an angle parallel to the main pipe, and the drill casing host drives the casing to drill downward at an angle parallel to the main pipe.

[0023] S3. If it is necessary to splice the drill rod and casing, after the current drill rod and casing have been drilled to the designated position, remove the current drill rod from the drilling host and the current casing from the casing drilling host, push the support to rise, and then transport and splice the new drill rod and casing to the current drill rod and casing. Then connect the new drill rod to the drilling host and the new casing to the casing drilling host, and then move the support downward again. If it is not necessary to splice the drill rod and casing, proceed to step S4.

[0024] S4. After the drill rod reaches the predetermined position, the current casing is separated from the drill casing host. At the same time, oil is supplied to the hydraulic chamber through the hydraulic line to make the drill bit's expanding wings unfold. The drilling host drives the drill rod to continue rotating to achieve bottom enlargement. After bottom enlargement is completed, pile end cement grout is injected into the enlarged position through the grout line. After the pile end cement grout is injected, the support is pushed to rise. The support drives the drilling host, drill rod and drill bit to move upward. The grout line continues to inject cement grout around the pile until the drill bit is removed from the drilling position.

[0025] S5. Move the main rod away from the drilling position, move the pile planting assembly until the pile planting frame is above the drilling position, then rotate the pile planting frame so that the precast pile on the pile planting frame is coaxial with the drilling hole, and then insert the precast pile into the drilling position along the current casing.

[0026] S6. Move the pile planting component away from the drilling position, move the main shaft to return the main rod to the drilling position, then connect the current casing at the drilling position to the drilling casing host, and push the support to rise. The support drives the drilling casing host to move upward until the current casing is dislodged from the drilling position. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of a construction device used for pile driving (the main pole is in a vertical position);

[0028] Figure 2 This is a schematic diagram of the usage state 1 of a construction equipment for pile planting (the main pole is in an inclined state);

[0029] Figure 3 This is a schematic diagram of the second usage state of a construction equipment for pile driving (the support component drives the drilling host and the drill casing host to descend);

[0030] Figure 4 This is a schematic diagram of the usage state 3 of a construction equipment for pile driving (the drill bit completes the bottom enlargement of the borehole, the support component drives the drill bit and drill rod to detach from the borehole, and the casing remains in the borehole).

[0031] Figure 5 This is a schematic diagram of the usage state 4 of a construction equipment for pile planting (the pile planting component is planting piles).

[0032] Figure 6 This is a schematic diagram of the usage state 5 of a construction equipment for pile driving (the support component drives the casing to detach from the borehole);

[0033] Figure 7 This is a schematic diagram of the connection structure between the main rod and the guide rail of a construction equipment used for pile planting;

[0034] Figure 8 This is a schematic diagram of the connection structure between the base platform and the walking assembly of a construction equipment for pile driving.

[0035] Figure 9 A schematic diagram of a pile-planting component for a construction device used for pile planting;

[0036] Figure 10 This is a schematic diagram of the connection structure between the pile planting component and the guide rail of a construction equipment for pile planting.

[0037] Explanation of reference numerals in the attached figures.

[0038] 1. Base platform; 11. Guide rail; 12. First receiving frame; 13. Second receiving frame; 2. Main rod; 21. Main rotating shaft; 22. Slide rail; 23. Support component; 31. Diagonal brace; 32. Telescopic cylinder; 41. Drilling host; 42. Drill rod; 43. Drill bit; 431. Enlarging wing; 51. Pile planting frame; 511. Secondary rotating shaft; 52. Clamping cylinder; 521. Clamping plate; 61. Drill casing host; 62. Casing; 71. First traveling frame; 72. Second traveling frame; 81. Boom; 82. Hook. Detailed Implementation

[0039] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. It should also be noted that all directional indications (such as up, down, left, right, front, back, inside, outside) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of the components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0040] Example 1

[0041] Please see Figures 1-10 Embodiment 1 of the present invention provides a construction device for pile driving, characterized in that it comprises:

[0042] Base platform 1, wherein the base platform 1 is provided with a guide rail 11 arranged in a transverse direction;

[0043] The main rod 2 has a main rotating shaft 21 at its lower end. The main rotating shaft 21 is rotatably slidably connected to the guide rail 11, and the rotation axis of the main rotating shaft 21 is set horizontally. The main rod 2 is provided with a support member 23 that can move along the axial direction of the main rod 2.

[0044] The diagonal bracing assembly includes a telescopic diagonal bracing rod 31, one end of which is rotatably connected to the base platform 1 and the other end of which is rotatably connected to the main rod 2. The diagonal bracing rod 31 is used to drive the rotation of the main rod 2.

[0045] The drilling assembly includes a drilling host 41, a drill bit 43, and a drill rod 42. The drilling host 41 is connected to the support member 23. The upper end of the drill rod 42 is connected to the drilling host 41 and the lower end is connected to the drill bit 43. The drill rod 42 is arranged parallel to the main rod 2. The drilling host 41 is used to drive the rotation of the drill rod 42.

[0046] The pile planting assembly includes a pile planting frame 51, the lower part of which is provided with a secondary rotating shaft 511, which is rotatably slidably connected to the guide rail 11.

[0047] Compared with existing technologies, the above solution allows for the control of the main rod 2 to rotate relative to the base platform 1 to the required angle by adjusting the extension and retraction of the diagonal brace 31 of the diagonal brace assembly. This enables the drilling assembly to drill holes in the ground in a direction parallel to the main rod 2. After drilling is completed, the drill rod 42 and drill bit 43 are removed from the drilling position, and the main rod 2 is moved away. By moving the pile planting assembly above the drilling position and rotating the pile planting frame 51 to make the precast pile on the pile planting frame coaxial with the drilling position, the precast pile can be inserted into the drilling position, ultimately achieving the construction requirements of planting vertical or inclined piles. Furthermore, since both the drilling assembly and the pile planting assembly are located on the same base platform 1, the coaxiality between the drilling direction and the pile planting direction can be maintained well, effectively improving the pile planting quality and reducing construction difficulty.

[0048] Depending on specific construction needs, the above embodiments can be further equipped with a drill casing assembly, which includes a drill casing main unit 61 and a casing 62. The drill casing main unit 61 is connected to the support member 23, and the upper end of the casing 62 is connected to the drill casing main unit 61. The casing 62 is sleeved on the outside of the drill rod 42, and the drill casing main unit 61 is used to drive the rotation of the casing 62. Preferably, the drill casing main unit 61 and the drilling main unit 41 are integrated into a single design, thereby ensuring that the casing 62 and the drill rod 42 can rotate more effectively at the same time.

[0049] It should be noted that the main rotating shaft 21 is rotatably and slidably connected to the guide rail 11, meaning that the main rotating shaft 21 can both slide relative to the guide rail 11 and rotate relative to the guide rail 11; the secondary rotating shaft 511 is similar. Specifically, in this embodiment, the guide rail 11 is T-shaped, with the left and right ends of the main rotating shaft 21 movably abutting against the left and right groove walls of the guide rail 11, respectively, while the main rod 2 extends from the groove opening of the guide rail 11 to the top of the base platform 1. Secondary rotating shafts 511 are provided on the lower left and right sides of the pile planting frame 51, with the left and right secondary rotating shafts 511 movably abutting against the left and right groove walls of the guide rail 11, respectively, thereby allowing the pile planting frame 51 to be rotatably and slidably connected to the guide rail 11. The main shaft 21 is equipped with a detachable main locking pin (not shown in the figure). The main locking pin is used to fix and abut against the guide rail 11. Thus, when the main rod 2 rotates to the required angle, the main rod 2 can be locked and fixed relative to the guide rail 11 by installing the main locking pin on the main shaft 21 and abutting against the guide rail 11. The secondary shaft 511 is equipped with a detachable secondary locking pin (not shown in the figure). The secondary locking pin is used to fix and abut against the guide rail 11. Thus, when the pile planting frame 51 rotates to the required angle, the pile planting frame 51 can be locked and fixed relative to the base platform 1 by installing the secondary locking pin on the secondary shaft 511 and abutting against the guide rail 11.

[0050] Of course, the main locking pin can also be detachably mounted on the main rod 2, as long as it can lock and fix the main rod 2 relative to the guide rail 11; similarly, the secondary locking pin can also be detachably mounted on the pile planting frame 51, mainly to lock and fix the pile planting frame 51 relative to the guide rail 11. It should be understood that in other embodiments, the main locking pin or secondary locking pin may not be provided, and locking bolts, pins, etc. in the prior art may be used, as long as the main rod 2 and the pile planting frame 51 are locked and fixed relative to the guide rail 11.

[0051] In addition, the "main rotating shaft 21 is rotatably slidably connected to the guide rail 11" can also be achieved in other ways. For example, the guide rail 11 is provided with a slide that can slide laterally, and the main rotating shaft 21 is rotatably connected to the slide. In this case, the main rotating shaft 21 can both rotate relative to the guide rail 11 and slide relative to the guide rail 11; the secondary rotating shaft 511 is similar.

[0052] In this embodiment, the base platform 1 is provided with a vertically penetrating pile hole or pile groove (not shown in the figure) for the drill bit 43 or precast pile to pass through. The pile hole or pile groove is located on the side of the guide rail 11 or in the middle of the guide rail 11. It should be understood that the pile hole or pile groove may not be provided, and the drill bit 43 can drill from the side of the base platform 1.

[0053] In this embodiment, the pile planting frame 51 is equipped with clamping cylinders 52. Two clamping cylinders 52 are arranged facing each other on the left and right sides of the pile planting frame 51, and the cylinder rods of the two clamping cylinders 52 are connected to clamping plates 521. When the cylinder rods of the two clamping cylinders 52 extend, the clamping plates 521 move toward the precast pile to clamp the precast pile, ensuring a more stable pile planting process.

[0054] In this embodiment, the diagonal bracing assembly includes two diagonal bracing rods 31. The upper ends of the two diagonal bracing rods 31 are rotatably connected to the left and right sides of the main rod 2, respectively. The lower ends of the two diagonal bracing rods 31 are rotatably connected to the base platform 1. The upper and lower ends of the diagonal bracing rods 31 are provided with telescopic cylinders 32 for adjusting the length of the diagonal bracing rods 31, thereby ensuring that the diagonal bracing assembly controls the rotation angle of the main rod 2 more stably.

[0055] In this embodiment, the outer wall of the drill rod 42 is provided with stirring blades, and the inside of the drill rod 42 is provided with hydraulic pipelines and slurry pipelines arranged along the axial direction. Both the hydraulic pipelines and slurry pipelines are connected to the drill bit 43.

[0056] In this embodiment, at least two expanding wings 431 are movably connected to the outer side of the drill bit 43, and the drill bit 43 has a hydraulic chamber connected to a hydraulic pipeline inside. The hydraulic chamber is used to control the expansion or retraction of the expanding wings 431, and the drill bit 43 has an outlet connected to a slurry pipeline.

[0057] Furthermore, the above solution also includes a traveling assembly. The traveling assembly includes a first traveling frame 71 arranged in the front-to-back direction and a second traveling frame 72 arranged in the left-to-right direction. The lower part of the base platform 1 is provided with a first receiving frame 12 slidably connected to the first traveling frame 71 and a second receiving frame 13 slidably connected to the second traveling frame 72. When the base platform 1 needs to move in the front-to-back direction, the second receiving frame 13 is separated from the second traveling frame 72, at which point the base platform 1 can move along the first traveling frame 71 in the front-to-back direction; when the base platform 1 needs to move in the left-to-right direction, the first receiving frame 12 is separated from the first traveling frame 71, at which point the base platform 1 can move along the second traveling frame 72 in the left-to-right direction, thereby enabling the base platform 1 to be easily moved to different construction positions.

[0058] Furthermore, the base platform 1 of the above scheme is also equipped with a lifting assembly, which includes a telescopic boom 81 and a hook 82 connected to the upper end of the boom 81. The boom 81 and the base platform 1 are rotatably connected and the rotation axis is vertical, so that the drill rod 42, casing 62 or precast pile to be spliced ​​can be transferred through the lifting assembly.

[0059] Example 2

[0060] Embodiment 2 of the present invention provides a construction method for pile planting, applied to a pile planting construction device as described in Embodiment 1, and the specific steps include:

[0061] S1. Move the base platform 1 to the drilling position to be constructed, and adjust the extension length of the diagonal brace 31 to drive the main rod 2 to rotate to the required angle. At this time, the drill rod 42 and the casing 62 remain parallel to the main rod 2.

[0062] S2. Start the drill rod 42 host and the drill casing host 61. The drill rod 42 host and the drill casing host 61 drive the drill rod 42 and the casing 62 to rotate in the same direction, and then push the support 23 to move downward, so that the drill rod 42 host drives the drill rod 42 and the drill bit 43 to drill downward at an angle parallel to the main rod 2, and the drill casing host 61 drives the casing 62 to drill downward at an angle parallel to the main rod 2.

[0063] S3. If it is necessary to splice drill rod 42 and casing 62, after the current drill rod 42 and current casing 62 have been drilled to the designated position, remove the current drill rod 42 from the drilling host 41 and the current casing 62 from the casing drilling host 61, push the support member 23 up, and then transport and splice the new drill rod 42 and the new casing 62 to the current drill rod 42 and the current casing 62. Then connect the new drill rod 42 to the drilling host 41 and the new casing 62 to the casing drilling host 61. Then the support member 23 moves down again. If it is not necessary to splice drill rod 42 and casing 62, proceed to step S4.

[0064] S4. After the drill rod 42 reaches the predetermined position, the current casing 62 is separated from the drilling casing host 61. At the same time, oil is supplied to the hydraulic chamber through the hydraulic pipeline to make the enlarging wings 431 of the drill bit 43 unfold. The drilling host 41 drives the drill rod 42 to continue rotating to achieve bottom enlargement. After the bottom enlargement is completed, the pile end cement grout is injected into the enlarged position through the grout pipeline. After the pile end cement grout is injected, the support member 23 is pushed to rise. The support member 23 drives the drilling host 41, drill rod 42 and drill bit 43 to move upward. The grout pipeline continues to inject cement grout around the pile until the drill bit 43 is removed from the drilling position.

[0065] S5. Move the main rod 2 away from the drilling position, move the pile planting assembly until the pile planting frame 51 is above the drilling position, then rotate the pile planting frame 51 so that the precast pile on the pile planting frame 51 is coaxial with the drilling, and then insert the precast pile into the drilling position along the current casing 62.

[0066] S6. Move the pile planting assembly away from the drilling position, move the main shaft 21 to make the main rod 2 return to the drilling position, then connect the current casing 62 at the drilling position to the drilling casing host 61, and push the support 23 to rise. The support 23 drives the drilling casing host 61 to move upward until the current casing 62 is dislodged from the drilling position.

[0067] Furthermore, in step S5, if pile splicing is required, the clamping cylinder 52 pushes the clamping plate 521 to temporarily clamp the precast pile that has been partially inserted into the borehole. Then, the new precast pile is spliced ​​to the current precast pile, and the clamping cylinder 52 drives the clamping plate 521 to detach from the current precast pile, after which insertion continues. The new drill rod 42, casing 62, or precast pile is preferably transported by a lifting assembly.

[0068] While the disclosure is as stated above, its scope of protection is not limited thereto. Those skilled in the art will be able to make various changes and modifications without departing from the spirit and scope of this disclosure, and all such changes and modifications will fall within the scope of protection of the invention.

Claims

1. A construction device for pile driving, characterized in that, include: The base platform (1) is provided with a guide rail (11) arranged in a transverse direction; The main rod (2) has a main rotating shaft (21) at its lower end. The main rotating shaft (21) is rotatably slidably connected to the guide rail (11), and the rotation axis of the main rotating shaft (21) is set horizontally. The main rod (2) is provided with a support member (23) that can move along the axial direction of the main rod (2). The diagonal bracing assembly includes a telescopic diagonal bracing rod (31), one end of which is rotatably connected to the base platform (1) and the other end of which is rotatably connected to the main rod (2). The diagonal bracing rod (31) is used to drive the rotation of the main rod (2). The drilling assembly includes a drilling host (41), a drill bit (43), and a drill rod (42). The drilling host (41) is connected to the support member (23). The upper end of the drill rod (42) is connected to the drilling host (41), and the lower end is connected to the drill bit (43). The drill rod (42) is arranged parallel to the main rod (2). The drilling host (41) is used to drive the rotation of the drill rod (42). The pile planting assembly includes a pile planting frame (51), the lower part of which is provided with a secondary rotating shaft (511), the secondary rotating shaft (511) being rotatably slidably connected to a guide rail (11). The guide rail (11) is groove-shaped. The main rotating shaft (21) and the secondary rotating shaft (511) are movably connected inside the guide rail (11). The main rotating shaft (21) and the secondary rotating shaft (511) are respectively provided with a main locking pin and a secondary locking pin. The main locking pin is used to connect to the guide rail (11) to fix the main rotating shaft (21) relative to the guide rail (11). The secondary locking pin is used to connect to the guide rail (11) to fix the secondary rotating shaft (511) relative to the guide rail (11).

2. The construction equipment for pile driving according to claim 1, characterized in that, The pile planting frame (51) is equipped with two opposing clamping cylinders (52), and the cylinder rod of the clamping cylinder (52) is equipped with clamping plates (521) for clamping the precast pile.

3. The construction equipment for pile driving according to claim 1, characterized in that, It also includes a drill casing host (61) and a casing (62). The drill casing host (61) is connected to the support (23). The upper end of the casing (62) is connected to the drill casing host (61). The casing (62) is sleeved on the outside of the drill rod (42). The drill casing host (61) is used to drive the rotation of the casing (62).

4. The construction equipment for pile driving according to claim 1, characterized in that, It also includes a walking assembly, which includes a first walking frame (71) arranged in the front-back direction and a second walking frame (72) arranged in the left-right direction. The lower part of the base platform (1) is provided with a first support frame (12) slidably connected to the first walking frame (71) and a second support frame (13) slidably connected to the second walking frame (72). The first walking frame (71) and the second walking frame (72) are used to guide the base platform (1) to move in the front-back direction and the left-right direction.

5. The construction equipment for pile driving according to claim 1, characterized in that, The diagonal bracing assembly includes two diagonal bracing rods (31), the upper ends of which are rotatably connected to the left and right sides of the main rod (2), and the lower ends of which are rotatably connected to the base platform (1). The upper and / or lower ends of the diagonal bracing rods (31) are provided with telescopic cylinders (32) for adjusting the length of the diagonal bracing rods (31).

6. The construction equipment for pile driving according to claim 1, characterized in that, The outer wall of the drill rod (42) is provided with stirring blades, and the inside of the drill rod (42) is provided with hydraulic pipelines and slurry pipelines arranged along the axial direction. Both the hydraulic pipelines and slurry pipelines are connected to the drill bit (43).

7. The construction equipment for pile driving according to claim 1, characterized in that, At least two expanding wings (431) are movably connected to the outer side of the drill bit (43). The drill bit (43) has a hydraulic chamber connected to a hydraulic pipeline inside. The hydraulic chamber is used to control the expansion or retraction of the expanding wings (431). The drill bit (43) has an outlet connected to a slurry pipeline.

8. The construction equipment for pile driving according to claim 1, characterized in that, The base platform (1) is also provided with a lifting assembly, which includes a telescopic boom (81) and a hook (82) connected to the upper end of the boom (81).

9. A construction method for pile driving, characterized in that, The construction equipment for pile driving as described in any one of claims 1-8 includes the following specific steps: S1. Move the base platform (1) to the drilling position to be constructed, and adjust the extension length of the diagonal brace (31) to drive the main rod (2) to rotate to the required angle. At this time, the drill rod (42) and the casing (62) remain parallel to the main rod (2). S2. Start the drill rod (42) main unit and the drill casing main unit (61). The drill rod (42) main unit and the drill casing main unit (61) drive the drill rod (42) and the casing (62) to rotate in the same direction, and then push the support (23) to move downward, so that the drill rod (42) main unit drives the drill rod (42) and the drill bit (43) to drill downward at an angle parallel to the main rod (2), and the drill casing main unit (61) drives the casing (62) to drill downward at an angle parallel to the main rod (2). S3. If it is necessary to splice the drill rod (42) and the casing (62), after the current drill rod (42) and the current casing (62) are drilled to the designated position, remove the current drill rod (42) from the drilling host (41) and remove the current casing (62) from the casing drilling host (61), push the support (23) up, and then transport and splice the new drill rod (42) and the new casing (62) to the current drill rod (42) and the current casing (62). Then connect the new drill rod (42) to the drilling host (41) and the new casing (62) to the casing drilling host (61). Then the support (23) moves down again. If it is not necessary to splice the drill rod (42) and the casing (62), proceed to step S4. S4. When the drill rod (42) reaches the predetermined position, the current casing (62) is separated from the drill casing host (61). At the same time, oil is supplied to the hydraulic chamber through the hydraulic pipeline so that the enlarged wings (431) of the drill bit (43) unfold. The drilling host (41) drives the drill rod (42) to continue rotating to achieve bottom enlargement. After the bottom enlargement is completed, the pile end cement grout is injected into the bottom enlargement position through the grout pipeline. After the pile end cement grout is injected, the support (23) is pushed to rise. The support (23) drives the drilling host (41), drill rod (42) and drill bit (43) to move upward. The grout pipeline continues to inject cement grout around the pile until the drill bit (43) is removed from the drilling position. S5. Move the main rod (2) away from the drilling position, move the pile planting assembly until the pile planting frame (51) is above the drilling position, then rotate the pile planting frame (51) so that the precast pile on the pile planting frame (51) is coaxial with the drilling, and then insert the precast pile into the drilling position along the current casing (62). S6. Move the pile planting assembly away from the drilling position, move the main shaft (21) to make the main rod (2) return to the drilling position, then connect the current casing (62) at the drilling position to the casing host (61), and push the support (23) to rise. The support (23) drives the casing host (61) to move upward until the current casing (62) is dislodged from the drilling position.

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