A spliced ​​hole-forming device with a drill rod and a construction method thereof

Abstract

A splicing type hole-forming equipment with a drill rod comprises a base platform, on which is provided a movable lifting system, a storage rack for placing spare drill rods, a drilling platform with a main rod erected thereon, and a pile-planting system for implanting a pile body; a lifting type drilling assembly is provided on the main rod, and the drilling assembly comprises a drill rod, a drill bit connected to the drill rod, and a drilling main unit for driving the drill rod to rotate, the drilling main unit and the drill rod are detachably connected, the drilling platform is rotatably connected to the base platform, and a clamping assembly for pushing the spare drill rod to remain vertical is provided on the storage rack. The above scheme integrates the lifting system, the pile-planting system, the storage rack, and the drilling platform with the drilling assembly into the base platform, thereby achieving drilling and pile-planting in the construction area at the same time, and can flexibly splice the drill rods of the drilling assembly, thereby effectively improving the construction efficiency. The present invention also provides a construction method for a splicing type hole-forming equipment with a drill rod.

Description

Technical Field

[0001] The present invention relates to the technical field of drilling and piling equipment, and in particular to a spliced ​​hole-forming equipment with a drill rod and a construction method thereof. Background Art

[0002] The construction of precast concrete piles mainly adopts hammering and static pressure methods. This kind of construction method has a certain soil squeezing effect, which has a great impact on the surrounding environment and causes certain damage to the pile body. In recent years, some non-soil squeezing construction methods have emerged, which are to drill holes first and then implant precast piles. These methods use drilling rigs to drill holes first. When the drilling depth is deep, the drill rod needs to be spliced.

[0003] However, the efficiency of splicing drill rods is low, and construction workers need to work at high altitudes, which poses certain safety hazards. In addition, there is also a process of using a dual-powered drilling machine to drill and plant piles, but this method has a high pile frame height and also poses safety hazards.

[0004] There are currently two popular construction processes on the market. The main construction process is as follows: Process 1: The main mast of the pile frame suspension drilling rig is relatively low. The main mast hangs a drilling rig equipment. The drilling rig is used for drilling. When the drilling depth is greater than the length of the drill rod, the drill rod needs to be spliced ​​and disassembled. Due to the low main mast, the depth of each drilling is limited. When the drilling depth is deep, the drill rod needs to be spliced ​​and disassembled many times. Each splicing and disassembly process is cumbersome and the construction efficiency is low. In this operation mode, the splicing and disassembly of the drill rod is complicated, the equipment utilization rate is low, and the construction efficiency is low. Process 2: The main mast of the pile frame suspension drilling rig is relatively high. The main mast hangs two drilling rig equipment. Each drilling rig equipment can be pre-installed with a drill rod. Due to the high main mast, the pre-spliced ​​drill rod is longer. The total length of the drill rod suspended by the two drilling rigs can meet the drilling depth requirements. The time for splicing and disassembling the drill rod during drilling is greatly reduced. This method has high construction efficiency, but due to the high height and heavy weight of the equipment, it is high on the construction site and there are certain safety hazards.

[0005] The above two processes are both ways of separating the drilling equipment and the pile-planting equipment. The drilling machine is used for drilling and the pile-planting equipment is used for planting piles. There are many construction equipment and it is very destructive to the site. After the drilling machine has completed the hole, the drilling machine is moved away and the pile-planting machine is moved up to plant piles. The moving process takes a long time, the continuity of drilling and planting piles is poor, and the construction efficiency is low. Summary of the invention

[0006] The purpose of the present invention is to solve the technical problems of low construction efficiency, poor continuity and great destructiveness to the site of drilling equipment and pile-planting equipment in the prior art.

[0007] In order to solve the above-mentioned problems, the present invention provides a spliced ​​hole-forming equipment with a drill rod, comprising a base platform, the base platform is provided with an operating area for the drill rod and / or pile body to pass through, the base platform is provided with a movable lifting system, a storage rack for placing spare drill rods, a drilling rig platform with a main rod erected, and a pile planting system for implanting the pile body; a lifting drilling assembly is provided on the main rod, the drilling assembly comprises a drill rod, a drill bit connected to the drill rod and a drilling main machine for driving the drill rod to rotate, the drilling main machine and the drill rod are detachably connected, the drilling rig platform is rotatably connected to the base platform, and the operating area and the storage rack are both located within the rotation range of the drilling main machine, the storage rack is provided with a clamping assembly for pushing the spare drill rod to remain vertical, the lifting system is used to lift the drill rod and / or the pile body, and the operating area and the storage rack are both located within the movable range of the lifting system.

[0008] The above scheme integrates the lifting system, the piling system and the drilling rig platform with drilling components on the base platform, thereby realizing the drilling and piling of the construction area at the same time; and through the setting of the main rods on the storage rack and the drilling rig platform, when the drilling depth is deep, the drilling host can splice the spare drill rods in the storage rack, thereby effectively improving the construction efficiency and having good practicality.

[0009] Preferably, a walking system is provided below the base platform, and the walking system includes a first track frame arranged along the front-to-back direction and a second track frame arranged along the left-to-right direction, and the first track frame and the second track frame are used to guide the base platform to slide along the front-to-back direction or the left-to-right direction. With this structure, the base platform can be moved more conveniently in the construction area, improving efficiency and causing less damage to the ground.

[0010] Preferably, the pile planting system includes pile planting frames arranged on both sides of the working area, and the pile planting frames are provided with a pile clamping cylinder for clamping the pile body and a pile planting cylinder for pushing the pile body into the pile hole. With this structure, automatic pile planting can be achieved through the coordinated operation of the pile clamping cylinder and the pile planting cylinder.

[0011] Preferably, the lifting system comprises a telescopic boom, the lower end of which is rotatably connected to the base platform, and the upper end of which is provided with a hook, thereby realizing effective lifting and transportation of drill rods and / or pile foundations.

[0012] Preferably, a slideway arranged vertically is provided on the side of the main rod, and the drilling main unit is slidably connected to the slideway, so that the drilling main unit can be lifted and lowered more stably relative to the main rod.

[0013] Preferably, the storage rack is provided with a vertically arranged groove for accommodating spare drill rods on the side facing the working area, and there are two clamping assemblies respectively located on the left and right sides of the groove. The clamping assembly includes a clamp and a power part for driving the clamp to move toward the center of the groove, thereby achieving effective clamping and fixation of the drill rod and ensuring that the drill rod can be maintained in a vertical state.

[0014] Preferably, the middle portion of the drill rod is provided with an axially arranged through-hole, a hydraulic pipeline and a slurry pipeline are arranged in the through-hole, the drill bit is provided with side wings and a cylinder system for driving the side wings to expand or retract, and the hydraulic pipeline is connected to the cylinder system; an outlet valve body is provided at the lower portion of the drill bit, and the slurry pipeline is connected to the outlet valve body, so that the drill bit can expand the bottom by expanding the side wings when necessary, and the arrangement of the outlet valve body and the slurry pipeline facilitates the injection of slurry.

[0015] Preferably, a stirring blade is provided on the side of the drill rod, and there are two side wings which are symmetrically arranged on both sides of the drill bit, so that the drilling operation or bottom expansion operation of the drilling assembly is more stable.

[0016] The present invention also provides a construction method of a spliced ​​hole-forming device with a drill rod, which is applied to the spliced ​​hole-forming device with a drill rod as described above, and comprises the following steps:

[0017] S1. The spare drill pipe is transferred to the storage rack through the lifting system, and the spare drill pipe is fixed by the clamping assembly;

[0018] S2. Move the base platform so that the work area is facing the construction area, start the drilling assembly, and control the drilling assembly to descend to drill the construction area, and continue to inject water or slurry into the borehole through the drill bit during the drilling operation;

[0019] S3. Before the drill rod of the drilling assembly is completely immersed in the soil layer of the construction area, the drilling mainframe and the original drill rod in the drilling assembly are separated, and the drilling mainframe is raised so that the drilling mainframe is higher than the top of the spare drill rod in the storage rack;

[0020] S4. Rotate the drilling rig platform so that the drilling machine is facing the spare drill rod on the storage rack, then lower the drilling machine so that the rotary drilling machine is spliced ​​with the spare drill rod, and the spare drill rod on the storage rack becomes the new drill rod of the drilling assembly, and then release the clamping assembly to fix the new drill rod;

[0021] S5. Rotate the drilling rig platform so that the drilling machine is facing the construction area, and then splice the new drill rod connected to the drilling machine with the original drill rod left in the construction area;

[0022] S6. Continue drilling. When the drill bit of the drilling assembly reaches a predetermined depth, the drilling operation is completed, and the drilling host drives the drill bit to expand the bottom to form an expanded bottom position;

[0023] S7. Inject cement slurry into the bottom expansion position. After the cement slurry injection into the bottom expansion position is completed, inject cement slurry around the pile instead, and while injecting the cement slurry around the pile, lift the drilling assembly upward until the original drill pipe is exposed in the construction area;

[0024] S8. Separate the new drill rod from the original drill rod, then lift the drilling machine so that the new drill rod is separated from the original drill rod, then rotate the drilling rig platform so that the new drill rod is transferred to the storage rack, then separate the new drill rod from the drilling machine, and control the clamping assembly to fix the new drill rod;

[0025] S9. Rotate the drilling platform so that the main drilling machine faces the construction area, then lower the main drilling machine and connect it to the original drill rod, continue to inject cement slurry around the pile and lift the drilling assembly upward until the drill bit is pulled out of the soil layer in the construction area;

[0026] S10. Rotate the drilling rig platform so that the drilling assembly avoids the working area, control the hoisting system to transfer the prefabricated piles to the working area, and use the pile planting system to plant the prefabricated piles into the drilled holes in the construction area.

[0027] Compared with the prior art, the above solution has the following beneficial effects:

[0028] 1. The present invention realizes convenient storage of spare drill rods through the design of the storage rack, so that in the subsequent drilling operation, the drilling rig system can directly splice the spare drill rods in the storage rack between the drilling main machine and the original drill rod, thereby improving the drilling speed, reducing the labor intensity, being convenient and flexible to operate, and having high construction efficiency;

[0029] 2. When splicing drill rods once still cannot meet the drilling depth requirement, multiple storage racks can be arranged, or multiple spare drill rods can be placed in the storage racks to facilitate splicing and drilling. That is, the storage racks can be flexibly combined according to the construction situation;

[0030] 3. According to actual needs, the drilling assembly can be spliced ​​with spare drill rods for multiple times, and the drilling depth does not need to be too deep each time, so that the height of the main rod or the matching pile driver is greatly reduced, the weight of the equipment is reduced, and the construction is safer;

[0031] 4. The drilling components and pile planting system are integrated on the base platform, which reduces the damage to the site caused by the movement of multiple devices, improves the construction efficiency, and drilling and pile planting can be completed continuously, with high construction quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1It is an axonometric diagram of a spliced ​​hole-making device with a drill rod;

[0033] Figure 2 A schematic diagram of a storage rack for a spliced ​​hole-forming device with drill rods;

[0034] Figure 3 A schematic diagram of a clamping assembly of a spliced ​​hole-forming device with a drill rod;

[0035] Figure 4 A schematic diagram of a state 1 of a spliced ​​hole-forming device with a drill pipe;

[0036] Figure 5 A schematic diagram of a state 2 of a spliced ​​hole-forming device with a drill pipe;

[0037] Figure 6 A schematic diagram of state 3 of a spliced ​​hole-forming device with a drill rod;

[0038] Figure 7 A schematic diagram of a state 4 of a spliced ​​hole-forming device with a drill pipe;

[0039] Figure 8 It is a schematic diagram of state 5 of a spliced ​​hole-forming equipment with a drill pipe.

[0040] Description of reference numerals:

[0041] 1-base platform; 1.1-working area; 2-drilling platform; 2.1-main rod; 2.1a-slideway; 2.2-drilling machine; 2.3-drill rod; 2.3a-mixing blade; 2.4-drill bit; 2.4a-side wing; 3-storage rack; 3a-groove; 3.1-power part; 3.2-clamp; 4-lifting system; 4.1-jib; 4.2-hook; 5-pile system; 5.1-pile frame; 6-travel system; 6.1-first track frame; 6.2-second track frame; 6.3-receiving frame. DETAILED DESCRIPTION

[0042] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail in conjunction with the accompanying drawings. 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 part of the embodiments of the present invention, not all of the embodiments. 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. It should also be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, inside, outside) are only used to explain the relative position relationship, movement, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0043] See also Figure 1-4 The embodiment of the present invention provides a splicing type hole-forming equipment with a drill rod, comprising a base platform 1, the base platform 1 is provided with an operation area 1.1 for the drill rod 2.3 and / or the pile body to pass through, the base platform 1 is provided with a movable lifting system 4, a storage rack 3 for placing spare drill rods 2.3, a drilling platform 2 with a main rod 2.1 erected thereon, and a pile planting system 5 for planting the pile body; a lifting drilling assembly is provided on the main rod 2.1, and the drilling assembly includes a drill rod 2.3, a drill bit connected to the drill rod 2.3, and a drill bit connected to the drill rod 2.3. 2.4 and a drilling main machine 2.2 for driving the drill rod 2.3 to rotate, the drilling main machine 2.2 and the drill rod 2.3 are detachably connected, the drilling rig platform 2 is rotatably connected to the base platform 1, and the working area 1.1 and the storage rack 3 are both located within the rotation range of the drilling main machine 2.2, the storage rack 3 is provided with a clamping assembly for pushing the spare drill rod 2.3 to maintain verticality, the lifting system 4 is used for lifting the drill rod 2.3 and / or the pile body, and the working area 1.1 and the storage rack 3 are both located within the activity range of the lifting system 4.

[0044] The above scheme integrates the lifting system 4, the pile planting system 5 and the drilling platform 2 with a drilling component on the base platform 1, thereby realizing the drilling and pile planting of the construction area at the same time; and through the setting of the storage rack 3 and the main rod 2.1 on the drilling platform 2, when the drilling depth is deep, the drilling host 2.2 can splice the spare drill rod 2.3 in the storage rack 3, thereby effectively improving the construction efficiency and having good practicality.

[0045] As an extension of the above embodiment, a walking system 6 is provided below the base platform 1. The walking system 6 includes a first track frame 6.1 arranged along the front-back direction and a second track frame 6.2 arranged along the left-right direction. There are two first track frames 6.1 and they are respectively located on the left and right sides of the base platform 1, and there are two second track frames 6.2 and they are respectively located on the front and rear sides of the base platform 1. Four receiving frames 6.3 are connected to the lower part of the base platform 1, of which two receiving frames 6.3 are used to be respectively slidably connected to the first track frame 6.1, and the other two receiving frames 6.3 are used to be respectively slidably connected to the second track frame 6.2. After adopting this structure, the base platform 1 can be moved more conveniently in the construction area, improve efficiency, and cause less damage to the ground. Of course, the number of the first track frame 6.1, the second track frame 6.2 and the corresponding receiving frame 6.3 can also be increased as needed, and this design does not limit this.

[0046] In this embodiment, the working area 1.1 is a square through groove arranged vertically, and the pile planting system 5 includes pile planting frames 5.1 arranged on both sides of the working area 1.1, and the pile planting frames 5.1 are provided with a pile clamping cylinder (not shown in the figure) for clamping the pile body and a pile planting cylinder (not shown in the figure) for pushing the pile body into the pile hole. The specific arrangement of the pile clamping cylinder and the pile planting cylinder is not limited. For example, there are preferably two pile clamping cylinders and they are respectively arranged on the left and right sides of the working area 1.1 to clamp the pile body, and the pile planting cylinder is arranged vertically and facing the working area 1.1. After adopting this structure, the pile body of the prefabricated pile is clamped by the pile clamping cylinder, and then the pile body is pushed into the pile hole by the pile planting cylinder, so that automatic pile planting can be achieved.

[0047] In this embodiment, the lifting system 4 includes a telescopic boom 4.1, the lower end of which is rotatably connected to the base platform 1, so that the boom 4.1 can rotate freely in the horizontal direction. A hook 4.2 is provided at the upper end of the boom 4.1, so as to realize the effective lifting and transportation of the drill pipe 2.3 and / or the pile foundation.

[0048] In this embodiment, a vertical slideway 2.1a is provided on the side of the main rod 2.1, and the drilling main machine 2.2 is slidably connected to the slideway 2.1a, so that the drilling main machine 2.2 can be lifted and lowered more stably relative to the main rod 2.1.

[0049] In this embodiment, a groove 3a arranged vertically for accommodating a spare drill rod 2.3 is provided on one side of the storage rack 3 facing the working area 1.1. There are two clamping assemblies which are respectively located on the left and right sides of the groove 3a. The clamping assembly includes a clamp 3.2 and a power member 3.1 for driving the clamp 3.2 to move toward the center of the groove 3a, thereby achieving effective clamping and fixation of the drill rod 2.3 and ensuring that the drill rod 2.3 can be maintained in a vertical state.

[0050] In this embodiment, a through hole arranged along the axial direction is provided in the middle part of the drill rod 2.3, a hydraulic pipeline and a slurry pipeline are arranged in the through hole, the drill bit 2.4 is provided with a side wing 2.4a and a cylinder system for driving the side wing 2.4a to expand or retract, and the hydraulic pipeline is connected to the cylinder system; an outlet valve body is provided at the lower part of the drill bit 2.4, and the slurry pipeline is connected to the outlet valve body, so that the drill bit 2.4 can expand the side wing 2.4a to perform bottom expansion operation when necessary, and the arrangement of the outlet valve body and the slurry pipeline facilitates the injection of slurry.

[0051] As a further optimization of the above embodiment, a stirring blade 2.3a is provided on the side of the drill rod 2.3, and two side wings 2.4a are symmetrically arranged on both sides of the drill bit 2.4, so that the drilling operation or bottom expansion operation of the drilling assembly is more stable.

[0052] See also Figure 4-8 The present invention also provides a construction method of a spliced ​​hole-forming device with a drill rod 2.3, which is applied to the spliced ​​hole-forming device with a drill rod 2.3 as above, and comprises the following steps:

[0053] S1. The spare drill rod 2.3 is transferred to the storage rack 3 by the lifting system 4, and the spare drill rod 2.3 is fixed by the clamping assembly;

[0054] S2. Move the base platform 1 so that the working area 1.1 is facing the construction area, start the drilling assembly, and control the drilling assembly to descend to perform drilling operations on the construction area, and continue to inject water or slurry into the borehole through the drill bit 2.4 during the drilling operation;

[0055] S3. Before the drilling rod 2.3 of the drilling assembly is completely immersed in the soil layer of the construction area, the drilling host 2.2 and the original drill rod 2.3 in the drilling assembly are split, and the drilling host 2.2 is raised so that the drilling host 2.2 is higher than the top of the spare drill rod 2.3 of the storage rack 3;

[0056] S4. Rotate the drilling rig platform 2 so that the drilling host 2.2 is facing the spare drill rod 2.3 on the storage rack 3, then lower the drilling host 2.2 so that the rotary host and the spare drill rod 2.3 are spliced, and the spare drill rod 2.3 on the storage rack 3 becomes the new drill rod 2.3 of the drilling assembly, and then release the clamping assembly to fix the new drill rod 2.3;

[0057] S5. Rotate the drilling rig platform 2 so that the drilling host 2.2 is facing the construction area, and then splice the new drill rod 2.3 connected to the drilling host 2.2 with the original drill rod 2.3 left in the construction area;

[0058] S6 continues drilling, and after the drill bit 2.4 of the drilling assembly reaches a predetermined depth, the drilling operation is completed, and the drilling host 2.2 drives the drill bit 2.4 to expand the bottom to form an expanded bottom position;

[0059] S7. Inject cement slurry into the bottom expansion position. After the cement slurry injection is completed, inject cement slurry around the pile instead. While injecting the cement slurry around the pile, lift the drilling assembly upward until the original drill rod 2.3 is exposed in the construction area.

[0060] S8. The new drill rod 2.3 is separated from the original drill rod 2.3, and then the drilling machine 2.2 is lifted so that the new drill rod 2.3 is separated from the original drill rod 2.3, and then the drilling rig platform 2 is rotated so that the new drill rod 2.3 is transferred to the storage rack 3, and then the new drill rod 2.3 is separated from the drilling machine 2.2, and the clamping assembly is controlled to fix the new drill rod 2.3;

[0061] S9. Rotate the drilling rig platform 2 so that the drilling machine 2.2 is facing the construction area, then lower the drilling machine 2.2 and splice the drilling machine 2.2 with the original drill rod 2.3, continue to inject cement slurry around the pile and lift the drilling assembly upward until the drill bit 2.4 is pulled out of the soil layer in the construction area;

[0062] S10. Rotate the drilling rig platform 2 so that the drilling assembly avoids the working area 1.1, control the hoisting system 4 to transfer the prefabricated piles to the working area 1.1, and use the pile planting system 5 to plant the prefabricated piles into the drilled holes in the construction area.

[0063] It should be noted that in step S2, the slurry refers to the common slurry used for drilling in the prior art; in step S7, the bottom expansion cement slurry and the pile surrounding cement slurry both refer to the common cement slurry in the prior art; in step S8, after the new drill rod 2.3 is separated from the original drill rod 2.3, the original drill rod 2.3 can be temporarily fixed by grabbing from the outside or by the friction between the drill rod and the borehole, and this design does not limit this.

[0064] Compared with the prior art, the above solution has the following beneficial effects:

[0065] 1. The present invention realizes convenient storage of spare drill rods 2.3 through the design of the storage rack 3, so that in the subsequent drilling operation, the drilling rig system can directly splice the spare drill rods 2.3 in the storage rack 3 between the drilling main machine 2.2 and the original drill rods 2.3, thereby improving the drilling speed, reducing the labor intensity, being convenient and flexible to operate, and having high construction efficiency;

[0066] 2. When the drilling rod 2.3 cannot meet the drilling depth requirement after being spliced ​​once, multiple storage racks 3 can be arranged, or multiple spare drilling rods 2.3 can be placed in the storage rack 3 to facilitate splicing and drilling. That is, the storage rack 3 can be flexibly combined according to the construction situation;

[0067] 3. According to actual needs, the drilling assembly can be spliced ​​with the spare drill rod 2.3 for multiple times, and the drilling depth does not need to be too deep each time, so that the height of the main rod 2.1 or the matching pile driver is greatly reduced, the weight of the equipment is reduced, and the construction is safer;

[0068] 4. The drilling assembly and the pile planting system 5 are integrated on the base platform 1, which reduces the damage to the site caused by the movement of multiple devices, improves the construction efficiency, and the drilling and pile planting can be completed continuously, with high construction quality.

[0069] Although the disclosure is disclosed as above, the protection scope of the disclosure is not limited thereto. For those skilled in the art, various changes and modifications can be made without departing from the spirit and scope of the disclosure, and these changes and modifications will fall within the protection scope of the present invention.

Claims

1. A spliced ​​hole-forming device with a drill rod, comprising a base platform (1), wherein the base platform (1) is provided with an operating area (1.1) for the drill rod (2.3) and / or the pile body to pass through, characterized in that: The base platform (1) is provided with a movable lifting system (4), a storage rack (3) for placing spare drill rods (2.3), a drilling platform (2) with a main rod (2.1) erected thereon, and a pile planting system (5) for planting piles; the main rod (2.1) is provided with a lifting drilling assembly, the drilling assembly comprising a drill rod (2.3), a drill bit (2.4) connected to the drill rod (2.3), and a drilling main machine (2.2) for driving the drill rod (2.3) to rotate, the drilling main machine (2.2) and the drill bit (2.4) being arranged on the main rod (2.1) to move the drill rod (2.3) and the drilling main machine (2.2) to rotate the drill rod (2.3). The rod (2.3) is detachably connected, the drilling rig platform (2) is rotatably connected to the base platform (1), and the working area (1.1) and the storage rack (3) are both located within the rotation range of the drilling main machine (2.2), the storage rack (3) is provided with a clamping assembly for pushing the spare drill rod (2.3) to keep it vertical, the lifting system (4) is used to lift the drill rod (2.3) and / or the pile body, and the working area (1.1) and the storage rack (3) are both located within the range of movement of the lifting system (4); A groove (3a) arranged vertically and used to accommodate spare drill rods (2.3) is provided on one side of the storage rack (3) facing the working area (1.1); two clamping assemblies are respectively located on the left and right sides of the groove (3a); the clamping assemblies include a clamping piece (3.2) and a power piece (3.1) used to drive the clamping piece (3.2) to move toward the center of the groove (3a); The middle part of the drill rod (2.3) is provided with a through hole arranged in the axial direction, and a hydraulic pipeline and a slurry pipeline are arranged in the through hole; the drill bit (2.4) is provided with a side wing (2.4a) and a cylinder system for driving the side wing (2.4a) to expand or retract, and the hydraulic pipeline is connected to the cylinder system; the lower part of the drill bit (2.4) is provided with an outlet valve body, and the slurry pipeline is connected to the outlet valve body.

2. A spliced ​​hole-forming device with a drill rod according to claim 1, characterized in that: A walking system (6) is provided below the base platform (1), the walking system (6) comprising a first track frame (6.1) arranged along the front-rear direction and a second track frame (6.2) arranged along the left-right direction, the first track frame (6.1) and the second track frame (6.2) being used to guide the base platform (1) to slide along the front-rear direction or the left-right direction.

3. A spliced ​​hole-forming device with a drill rod according to claim 1 or 2, characterized in that: The pile planting system (5) comprises pile planting frames (5.1) arranged on both sides of the working area (1.1), and the pile planting frames (5.1) are provided with a pile clamping cylinder for clamping the pile body and a pile planting cylinder for pushing the pile body into the pile hole.

4. A spliced ​​hole-forming device with a drill rod according to claim 1 or 2, characterized in that: The lifting system (4) comprises a telescopic boom (4.1), the lower end of the boom (4.1) is rotatably connected to the base platform (1), and the upper end of the boom (4.1) is provided with a hook (4.2).

5. A spliced ​​hole-forming device with a drill rod according to claim 1 or 2, characterized in that: A slideway (2.1a) arranged vertically is provided on the side of the main rod (2.1), and the drilling main machine (2.2) is slidably connected to the slideway (2.1a).

6. The spliced ​​hole-forming equipment with a drill rod according to claim 1, characterized in that: A stirring blade (2.3a) is provided on the side of the drill rod (2.3), and there are two side wings (2.4a) symmetrically arranged on both sides of the drill bit (2.4).

7. A construction method of a spliced ​​hole-forming device with a drill rod, applied to the spliced ​​hole-forming device with a drill rod as claimed in any one of claims 1 to 6, characterized in that: The steps include: S1. The spare drill rod (2.3) is transferred to the storage rack (3) by the lifting system (4), and the spare drill rod (2.3) is fixed by the clamping assembly; S2. Move the base platform (1) so that the working area (1.1) is facing the construction area, start the drilling assembly, and control the drilling assembly to descend to perform drilling operations on the construction area, and continuously inject water or slurry into the borehole through the drill bit (2.4) during the drilling operation; S3. Before the drill rod (2.3) of the drilling assembly is completely immersed in the soil layer of the construction area, the drilling mainframe (2.2) and the original drill rod (2.3) in the drilling assembly are disassembled, and the drilling mainframe (2.2) is raised so that the drilling mainframe (2.2) is higher than the top of the spare drill rod (2.3) of the storage rack (3); S4. Rotate the drilling rig platform (2) so that the drilling machine (2.2) faces the spare drill rod (2.3) on the storage rack (3), then lower the drilling machine (2.2) so that the drilling machine and the spare drill rod (2.3) are spliced ​​together, and the spare drill rod (2.3) on the storage rack (3) becomes the new drill rod (2.3) of the drilling assembly, and then release the clamping assembly from fixing the new drill rod (2.3); S5. Rotate the drilling rig platform (2) so that the drilling host (2.2) is facing the construction area, and then splice the new drill rod (2.3) connected to the drilling host (2.2) with the original drill rod (2.3) left in the construction area; S6. Continue drilling. When the drill bit (2.4) of the drilling assembly reaches a predetermined depth, the drilling operation is completed. The drilling host (2.2) drives the drill bit (2.4) to expand the bottom to form an expanded bottom position. S7. Inject cement slurry into the bottom expansion position. After the cement slurry injection is completed, inject cement slurry around the pile instead. While injecting the cement slurry around the pile, lift the drilling assembly upward until the original drill rod (2.3) is exposed in the construction area. S8. Separate the new drill rod (2.3) from the original drill rod (2.3), then lift the drilling machine (2.2) to separate the new drill rod (2.3) from the original drill rod (2.3), then rotate the drilling rig platform (2) so that the new drill rod (2.3) is transferred to the storage rack (3), then separate the new drill rod (2.3) from the drilling machine (2.2), and control the clamping assembly to fix the new drill rod (2.3); S9. Rotate the drilling platform (2) so that the drilling machine (2.2) is facing the construction area, then lower the drilling machine (2.2) and connect the drilling machine (2.2) to the original drill rod (2.3), continue to inject cement slurry around the pile and lift the drilling assembly upward until the drill bit (2.4) is pulled out of the soil layer in the construction area; S10. Rotate the drilling rig platform (2) so that the drilling assembly avoids the working area (1.1), control the lifting system (4) to transfer the prefabricated piles to the working area (1.1), and use the pile planting system (5) to plant the prefabricated piles into the drilled holes in the construction area.

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