A rectangular pile hole repairing device and a rectangular pile hole forming construction method

Abstract

The present application relates to a rectangular pile hole repairing device and a rectangular pile hole forming construction method, wherein the rectangular pile hole forming construction method specifically comprises the following steps: S1, using a rotary digging device to sequentially perform hole guiding and slag discharging on all rectangular pile holes; S2, using a hole repairing device capable of autonomous construction to sequentially perform independent hole repairing on the rectangular pile holes that have completed the hole guiding and slag discharging; S3, using the rotary digging device to sequentially perform slag discharging on the rectangular pile holes that have completed the independent hole repairing, thereby completing the hole forming construction of all the rectangular pile holes; when one or more rectangular pile holes have completed the hole guiding and slag discharging in step S1, step S2 is started; when one or more rectangular pile holes have completed the independent hole repairing in step S2, step S3 is started. The entire construction process is continuous, which can shorten the batch rectangular pile hole forming period and improve the work efficiency; at the same time, the construction continuity of the rotary digging device is higher, the rental time of the device is shortened, and the construction cost is greatly reduced.

Description

Technical Field

[0001] This invention relates to the field of engineering construction technology, and in particular to a rectangular pile hole-forming device and a construction method for forming rectangular pile holes. Background Technology

[0002] Rectangular piles are a foundation construction technique suitable for areas with high load requirements, soft soil, and favorable geological conditions. They are created by excavating a rectangular hole of a certain width and depth underground and then pouring reinforced concrete into it, forming a strong and stable foundation.

[0003] Currently, the mechanized construction method for rectangular piles typically employs rotary drilling rigs for pilot hole drilling, followed by drilling with a hole-repairing drill bit, and finally, a rotary drilling rig with a sand-removing bucket for slag removal. After the completion of a single pile hole, the rotary drilling rig is used to drill the second pile. During this process, because both pilot hole drilling and hole repair require the assistance of the rotary drilling rig, there are instances where the hole-repairing drill bit is idle and waiting, which increases the overall construction period and extends the rental period for the rotary drilling rig, thus increasing the overall construction cost.

[0004] Therefore, a new construction method for drilling rectangular piles is urgently needed to solve the aforementioned technical problems. Summary of the Invention

[0005] (a) Technical problems to be solved

[0006] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a rectangular pile hole-forming device and a construction method for rectangular pile hole forming, which solves the technical problems of low equipment utilization efficiency, long construction period and high equipment rental cost in the existing rectangular pile hole forming construction methods.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, the main technical solutions adopted by the present invention include:

[0009] In a first aspect, embodiments of the present invention provide a rectangular pile hole-drilling device, including a base support, a transmission system, and an upper support assembly; the transmission system is vertically inserted through the base support, with its lower ends extending out of the base support; the upper support assembly is disposed on the base support, bypassing the transmission system; the upper support assembly includes a support portion and a lifting portion; the lifting portion is vertically inserted within the base support; the support portion is disposed at the upper end of the lifting portion, and its horizontal extension and retraction are used to support or disengage from the four side walls of the rectangular pile hole; the vertical extension and retraction of the lifting portion can drive the base support and the transmission system to move downwards in a step-by-step manner in the vertical direction.

[0010] Optionally, in the rectangular pile drilling device, the support part includes multiple support units located on the same plane; adjacent two support units are connected by a support rod to form a polygonal frame, and the multiple support units are arranged opposite each other in pairs; each support unit includes a first telescopic member and a support shoe; the first telescopic member is arranged in a horizontal direction, and the fixed ends of two adjacent first telescopic members are connected by the support rod; the telescopic ends of adjacent first telescopic members extend horizontally outward from the polygonal frame; the telescopic ends of the first telescopic members are provided with the support shoes, and the shoe surfaces of two opposite support shoes are arranged back to back.

[0011] Optionally, in the rectangular pile drilling device, the lifting part includes a plurality of second telescopic members, each corresponding to one of the plurality of support units; one end of the second telescopic member is fixed to the fixed end of the first telescopic member, and the other end is connected to the base bracket; the second telescopic member extends and retracts in the vertical direction to drive the base bracket to rise and fall.

[0012] Optionally, in the rectangular pile hole-drilling device, the six support units and the six support rods form a hexagon; the shoe surfaces of the six support shoes are used to support the four side walls of the rectangular pile hole; wherein, the two support shoes that are furthest apart and arranged opposite each other correspond to the two smaller side walls of the rectangular pile hole, and the other four support shoes are divided into two groups to correspond to the two larger side walls of the rectangular pile hole respectively.

[0013] Secondly, embodiments of the present invention provide a construction method for forming rectangular pile holes. The construction method is based on the rectangular pile hole-repairing equipment described in the first aspect, and specifically includes the following steps: S1, using rotary drilling equipment to sequentially perform pre-drilling and slag removal on all rectangular pile holes; S2, using a hole-repairing equipment capable of autonomous construction to independently repair the rectangular pile holes that have completed the pre-drilling and slag removal in sequence.

[0014] S3. Using rotary drilling equipment, the rectangular pile holes that have been independently repaired are slag removed in sequence to complete the drilling construction of all the rectangular pile holes; when one or more rectangular pile holes have completed the pilot hole and slag removal in step S1, step S2 begins; when one or more rectangular pile holes have completed the independent hole repair in step S2, step S3 begins.

[0015] Optionally, the construction method for forming a rectangular pile hole includes step S2, which includes: S21, fixing the hole-forming equipment to the inner wall of the rectangular pile hole that has been drilled and slag removed; S22, extending the hole-forming equipment downwards and stopping the extension after excavating a specified distance; S23, removing the support from the hole-forming equipment and retracting it downwards a specified distance; repeating steps S21, S22 and S23 to complete the entire hole-forming process.

[0016] Optionally, in the construction method for forming a rectangular pile hole, step S21, the support and fixing of the hole-forming equipment includes supporting the hole-forming equipment horizontally on the inner wall of the rectangular pile hole, and simultaneously, using a suspension device to suspend the hole-forming equipment above the corresponding rectangular pile hole.

[0017] Optionally, in the construction method for forming rectangular pile holes, in step S2, the process of transferring the hole-repairing equipment between adjacent rectangular pile holes that have completed pilot hole and slag removal is to use a suspension device to lift the hole-repairing equipment and transfer it to the next rectangular pile hole that has completed pilot hole and slag removal; wherein, if the horizontal height of two adjacent rectangular pile holes is the same, the process of transferring the hole-repairing equipment is to move the suspension device along the parallel track set below it.

[0018] Optionally, in the construction method for forming rectangular pile holes, if the horizontal heights of two adjacent rectangular pile holes are inconsistent, the process of transferring the hole-forming equipment is to use a lifting device to transfer the suspension equipment, hole-forming equipment, and parallel track to the next rectangular pile hole that has completed the pilot hole and slag removal.

[0019] Optionally, in the construction method for forming a rectangular pile hole, step S1, the process of using a rotary drilling equipment to guide the hole includes: S11, determining the diameter range of the rectangular pile hole to be constructed and performing rectangular interlocking construction; S12, using a first drill bit to guide the hole downwards along the edge of the rectangular interlocking in sequence, with the first drill bit tangent to at least one side of the rectangular interlocking in each guiding hole; S13, using a second drill bit to guide the hole downwards along the edge of the rectangular interlocking to form an under-excavated portion, with the drilling diameter of the second drill bit being twice the drilling diameter of the first drill bit, and the second drill bit tangent to at least two sides of the rectangular interlocking in each guiding hole.

[0020] (III) Beneficial Effects

[0021] The beneficial effects of this invention are as follows: The rectangular pile hole-repairing device and construction method of this invention utilize an autonomous hole-repairing device to complete the hole-repairing process. This eliminates the need for rotary drilling equipment during operation, allowing for simultaneous pre-drilling and hole-repairing in the rectangular pile hole-forming process. Furthermore, after the rotary drilling equipment completes the pre-drilling, it returns to the repaired rectangular pile hole for slag removal. Compared to existing technologies, the entire construction process is continuous, shortening the batch rectangular pile hole-forming cycle and improving operational efficiency. Simultaneously, the rotary drilling equipment only performs pre-drilling and slag removal, resulting in higher construction continuity, shorter equipment rental time, and significantly reduced construction costs.

[0022] During the hole repair process, the hole repair equipment first supports and fixes the inner wall of the rectangular pile hole, then extends downwards through the equipment, and then removes the support. Combined with the downward retraction method, the equipment achieves step-by-step downward hole repair. The hole repair process is completed independently, with more precise control and higher hole repair quality.

[0023] When the borehole repair equipment is in operation, it is lifted by a suspension device, and the equipment is slowly extended and retracted downwards for construction, which makes it more stable. When the borehole repair equipment is moved, it is coordinated with a suspension device and a track for easy movement. Attached Figure Description

[0024] Figure 1 This is a flowchart of the construction method for forming a rectangular pile hole, which is an embodiment 1 of the present invention, including a rectangular pile hole-forming device and a rectangular pile hole-forming construction method.

[0025] Figure 2 for Figure 1 The flowchart for step 3 in the text;

[0026] Figure 3 for Figure 1 A schematic diagram of the pilot holes for the first and second drill bits in step 1 of the process;

[0027] Figure 4 This is a three-dimensional schematic diagram of the hole-repairing equipment in Embodiment 2 of the present invention, which describes a rectangular pile hole-repairing device and a construction method for forming a rectangular pile hole.

[0028] Figure 5 for Figure 4 A 3D schematic diagram of the base support;

[0029] Figure 6 for Figure 4 A three-dimensional schematic diagram of the upper and middle layer support components;

[0030] Figure 7 for Figure 4 A three-dimensional schematic diagram of the working state of the intermediate hole repair equipment.

[0031] [Explanation of Labels in the Attached Image]

[0032] 1: Base bracket; 2: Transmission system; 3: Upper support assembly; 31: Support part; 311: Support unit; 312: Support rod; 3111: First telescopic component; 3112: Support shoe; 32: Lifting part; 321: Second telescopic component; 4: Suspension equipment; 5: Rectangular pile hole; 6: Track. Detailed Implementation

[0033] This invention proposes a rectangular pile hole-repairing device and a construction method for rectangular pile hole formation. Addressing the technical problems of low equipment utilization efficiency, long construction periods, and high equipment rental costs in existing rectangular pile hole formation methods, this invention utilizes a self-contained hole-repairing device to complete the hole-repairing process. This device does not require the assistance of a rotary drilling rig, meaning that the pre-drilling and hole-repairing processes can be performed simultaneously. Furthermore, after the rotary drilling rig completes the pre-drilling, it returns to the repaired rectangular pile hole for muck removal. Compared to existing technologies, the entire construction process is continuous, shortening the batch rectangular pile hole formation cycle and improving operational efficiency. Simultaneously, the rotary drilling rig only performs pre-drilling and muck removal, resulting in higher construction continuity, shorter equipment rental time, and significantly reduced construction costs.

[0034] To better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention can be understood more clearly and thoroughly, and that the scope of the present invention can be fully conveyed to those skilled in the art.

[0035] Example 1:

[0036] Reference Figure 4 , Figure 5 and Figure 6 This embodiment provides a rectangular pile hole repair device, including a base bracket 1, a transmission system 2, and an upper support component 3. The base bracket 1 is used to provide distribution space and support for other components, the transmission system 2 is used to complete the hole repair work, and the upper support component 3 is used to provide support and fixation for the entire device during construction.

[0037] The transmission system 2 is vertically inserted into the base bracket 1, with its lower end extending out of the base bracket 1 for easy hole repair. The upper support assembly 3 is positioned on the base bracket 1, bypassing the transmission system 2. The upper support assembly 3 includes a support part 31 and a lifting part 32, with the lifting part 32 vertically inserted into the base bracket 1. The support part 31 is located at the upper end of the lifting part 32 and extends horizontally to support or disengage from the four side walls of the rectangular pile hole 5. When the support part 31 supports the four side walls of the rectangular pile hole 5, the entire device is fixed within the rectangular pile hole 5; conversely, when the support part 31 disengages from the four side walls of the rectangular pile hole 5, it can move vertically within the rectangular pile hole 5.

[0038] The lifting unit 32 extends and retracts vertically, enabling the base support 1 and the transmission system 2 to move downwards in a step-by-step manner. Specifically, the support unit 31 supports the side wall of the rectangular pile hole 5, the entire equipment is positioned, and the transmission system 2 begins excavating and repairing the hole. Simultaneously, the lifting unit 32 extends, driving the transmission system 2 downwards via the base support 1. When the lifting unit 32 reaches its maximum length, it stops extending, and the support unit 31 retracts from the side wall of the rectangular pile hole 5. At this point, because the transmission system 2 and the base support 1 are stationary relative to the rectangular pile hole 5, the retraction of the lifting unit 32 drives the support unit 31 downwards, completing the first step of the excavation and repair action. Then, the support unit 31 repeatedly supports the side wall of the rectangular pile hole 5, repeating the first step of the excavation and repair action, thus achieving step-by-step downward movement for hole repair.

[0039] On the one hand, the support part 31 supports the four side walls of the rectangular pile hole 5, which can fix the equipment in the vertical direction; on the other hand, the feed amount of the transmission system 2 for downward hole repair is controlled by the extension and retraction of the lifting part 32, which can avoid damage to the transmission system 2 caused by excessive downward pressure from the rotary drilling rig; the step-by-step hole repair method can steadily feed downward, which can avoid the hole repair deviation caused by uneven softness and hardness in the pile hole, thus ensuring the quality of hole repair; the hole repair process is completed independently without the need for the use of a rotary drilling rig, which can make the pilot hole and hole repair processes run simultaneously, resulting in higher hole formation efficiency and reduced rotary drilling rig rental costs.

[0040] Reference Figure 6 This embodiment provides a rectangular pile drilling device. The support part 31 includes multiple support units 311 located on the same plane, which facilitates the drilling device to provide support to the circumferential hole wall. Adjacent support units 311 are connected by support rods 312 to form a polygonal frame, forming a stable support and load-bearing frame. The multiple support units 311 are arranged opposite to each other, which facilitates the application of support in opposite directions, resulting in more uniform overall stress and better support effect.

[0041] The support unit 311 includes a first telescopic member 3111 and a support shoe 3112. The support shoe 3112 has a large surface area for direct contact with the sidewall of the rectangular pile hole 5. The first telescopic member 3111 is arranged horizontally, and the fixed ends of two adjacent first telescopic members 3111 are connected by a support rod 312. The telescopic ends of adjacent first telescopic members 3111 extend horizontally outward from the polygonal frame. The telescopic ends of the first telescopic members 3111 are provided with support shoes 3112, and the shoe surfaces of two opposing support shoes 3112 are arranged facing away from each other. The first telescopic member 3111 may be a hydraulic component to facilitate the reciprocating support of the support unit 311.

[0042] Reference Figure 6This embodiment provides a rectangular pile drilling device. The lifting part 32 includes multiple second telescopic members 321, and each of the multiple second telescopic members 321 corresponds to a multiple support unit 311. One end of the second telescopic member 321 is fixed to the fixed end of the first telescopic member 3111, which simplifies the device structure and provides a fixed fulcrum for the second telescopic member 321. The other end is connected to the base bracket 1. The second telescopic member 321 extends and retracts in the vertical direction to drive the base bracket 1 to rise and fall.

[0043] Reference Figure 6 This embodiment provides a rectangular pile hole repair device. Considering the characteristics of the rectangular pile hole 5, namely its rectangular cross-section, it is preferable to use six support units 311 and six support rods 312 to form a hexagonal frame. The shoe surfaces of the six support shoes 3112 are used to support the four sidewalls of the rectangular pile hole 5. The two support shoes 3112 that are furthest apart and opposite each other correspond to the two smaller sidewalls of the rectangular pile hole 5, while the other four support shoes 3112 are evenly divided into two groups, each corresponding to one of the two larger sidewalls of the rectangular pile hole 5. This satisfies the supporting function while reducing the number of support units 311, thus simplifying the equipment structure.

[0044] Specifically, the hole-drilling process of the rectangular pile hole-drilling device in this embodiment is as follows: First, the rectangular pile hole-drilling device is hoisted into the locking position of the rectangular pile hole 5 using the rope of the suspension device 4; second, the support part 31 extends horizontally to support the four side walls of the rectangular pile hole 5, and the entire device is positioned. The transmission system 2 begins to excavate and drill, while the lifting part 32 extends synchronously, driving the transmission system 2 downward through the base bracket 1; when the lifting part 32 extends to its maximum length, it stops extending, and the support part 31 retracts from the side wall of the rectangular pile hole 5; finally, since the transmission system 2 and the base bracket 1 are stationary relative to the rectangular pile hole 5, the lifting part 32 retracts, driving the support part 31 downward, completing the first step of excavation and hole-drilling. Then, the support part 31 repeatedly supports the side wall of the rectangular pile hole 5, repeating the first step of excavation and hole-drilling, thus achieving step-by-step downward movement for hole drilling.

[0045] Reference Figure 7 After the rectangular pile drilling equipment completes the drilling work of the entire rectangular pile hole 5, it is transferred to the next hole location with the cooperation of the suspension equipment 4 and the track 6 to repeat the above construction process, thus completing the drilling work of a batch of rectangular piles. The suspension equipment 4 can be a gantry crane. During the drilling construction of the rectangular pile drilling equipment, the ropes of the suspension equipment 4 suspend the base support 1, which, together with the support part 31, plays a certain auxiliary lifting role, but does not play the main role.

[0046] Example 2:

[0047] Reference Figure 1This embodiment provides a construction method for forming rectangular pile holes. The construction method is based on the rectangular pile hole-repairing equipment of the first aspect, and specifically includes the following steps: S1, using a rotary drilling rig to sequentially perform pre-drilling and slag removal on all rectangular pile holes. When one or more rectangular pile holes have completed pre-drilling and slag removal, the next step begins. Step S2, using an autonomous hole-repairing equipment to independently repair the rectangular pile holes that have completed pre-drilling and slag removal, this process does not require the participation of the rotary drilling rig. When one or more rectangular pile holes have completed independent hole repair in step S2, the next step begins. Step S3, using a rotary drilling rig to sequentially remove slag from the rectangular pile holes that have completed independent hole repair, completing the hole-forming construction of all rectangular pile holes.

[0048] It should be explained here that because the hole-repairing process in step S2 uses a hole-repairing device that can operate independently without the rotary drilling equipment, step S2 can be basically carried out synchronously with the rotary drilling pilot hole process in step S1. In this way, the rotary drilling equipment only participates in the pilot hole and slag removal work, which reduces the usage time of the rotary drilling equipment and avoids the hole-repairing equipment being idle while waiting (when the rotary drilling equipment is involved in pilot hole and slag removal), thus greatly improving the hole-forming efficiency.

[0049] In addition, the rotary drilling equipment can perform the slag removal work in step S3 after completing the pre-drilling and slag removal work of a batch of rectangular pile holes. If there is an accumulation of rotary drilling pre-drilling in step S1 (the hole repair process in step S2 is delayed), the rotary drilling equipment can also be used alternately in steps S1 and S3 in step S3.

[0050] Among them, rotary drilling equipment can be rotary drilling machines, etc. For example, in the two patent documents with publication numbers CN115354960A and CN116446784A, it is mentioned that rotary drilling machines can be used with rotary drilling rods to drill holes, or to use hole repair equipment for hole repair.

[0051] Reference Figure 2 , Figure 4 , Figure 5 and Figure 6 This embodiment provides a construction method for drilling rectangular piles. Step S2 includes: S21, the support shoe 3112 of the drilling equipment is supported and fixed to the inner wall of the rectangular pile hole that has been drilled and slag removed under the push of the first telescopic member 3111, thus fixing the drilling equipment; S22, the second telescopic member 321 of the drilling equipment extends downward, driving the base support 1 and the transmission system 2 to excavate downward for drilling, and stops extending after excavating to the maximum extension distance of the second telescopic member 321; S23, the first telescopic member 3111 of the drilling equipment retracts, driving the support shoe 3112 to detach from the inner wall of the rectangular pile hole, thus removing the support. At this time, the second telescopic member 321 retracts, driving the upper support assembly 3 to move downward; then, steps S21, S22 and S23 are repeated to complete the entire drilling process for one hole position.

[0052] Reference Figure 7 This embodiment provides a construction method for drilling rectangular piles. In step S21, the support and fixing of the drilling equipment includes supporting the drilling equipment horizontally against the inner wall of the rectangular pile hole using an upper support component 3. Simultaneously, a suspension device 4 is used to suspend the drilling equipment above the corresponding rectangular pile hole 5. This provides double support, ensuring a stable drilling process.

[0053] Reference Figure 7 This embodiment provides a construction method for forming a rectangular pile hole. In step S2, the process of transferring the hole-repairing equipment between adjacent rectangular pile holes that have completed the pilot hole and slag removal is to use the suspension equipment 4 to lift the hole-repairing equipment and transfer it to the next rectangular pile hole that has completed the pilot hole and slag removal. If the horizontal height of two adjacent rectangular pile holes 5 is the same, the process of transferring the hole-repairing equipment is to move the suspension equipment along the parallel track 6 set below it.

[0054] In addition, in step S2, if the horizontal heights of two adjacent rectangular pile holes are inconsistent, the process of transferring the hole-repairing equipment is to use lifting equipment to transfer the suspension equipment, hole-repairing equipment and parallel track to the next rectangular pile hole that has completed the pilot hole and slag removal.

[0055] Reference Figure 3 This embodiment provides a construction method for forming a rectangular pile hole. In step S1, the process of drilling with a rotary drilling equipment includes: S11, determining the diameter range of the rectangular pile hole to be constructed and constructing a rectangular interlock; S12, using a first drill bit to drill downwards along the edge of the rectangular interlock, with the first drill bit being tangent to at least one side of the rectangular interlock each time; S13, using a second drill bit to drill downwards along the edge of the rectangular interlock to form an under-dug portion, with the drilling diameter of the second drill bit being twice the drilling diameter of the first drill bit, and the second drill bit being tangent to at least two sides of the rectangular interlock each time.

[0056] For details, please refer to Figure 3 For example, the longitudinal width of the rectangular lock opening is 3m, the transverse width is 2m, and the diameter of the first drill bit is 1m. The first drill bit drills three tangential small holes along the longitudinal direction of the rectangular lock opening. Figure 3The first drill bit draws two tangent small holes along the transverse direction of the rectangular interlock, with each hole tangent to the same longitudinal edge and corresponding transverse edge of the rectangular interlock. The purpose of this tangency is to maximize the drilling area while maximizing the drill bit's efficiency and shortening the overall rotary drilling time. The first drill bit draws two tangent small holes along the transverse direction of the rectangular interlock, with each hole tangent to the corresponding longitudinal edge and the same transverse edge of the rectangular interlock, for a total of six small holes, maximizing the drill bit's efficiency. It should be noted that the "small" of these small holes is relative; they are smaller than those of the second drill bit. The specific dimensions need to be further selected based on the transverse and longitudinal widths of the pile hole.

[0057] Furthermore, the diameter of the second drill bit is set to 2m, and the second drill bit leads to two intersecting large holes along the longitudinal direction of the rectangular lock opening. Figure 3 The large circle in the middle), and the second drill bit is tangent to both longitudinal edges and one corresponding transverse edge of the rectangular interlock. The same applies to the large borehole. This method (8-hole method) can minimize the under-excavation portion to ensure that the under-excavation of the pile hole after the pilot hole is minimized. It avoids the need to use full-section hole-repairing equipment in the later stage, and greatly improves hole-repairing efficiency.

[0058] In the description of this invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0059] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0060] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that they are in indirect contact through an intermediate medium. Furthermore, "above," "over," or "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," or "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0061] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0062] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A method of constructing a rectangular pile hole, characterized by, The construction method is based on a rectangular pile hole repairing device; The rectangular pile hole repairing device comprises a base support (1), a transmission system (2) and an upper support assembly (3); The transmission system (2) is vertically arranged in the base support (1), and the lower end of the transmission system (2) extends out of the base support (1); The upper support assembly (3) is arranged on the base support (1) away from the transmission system (2); The upper support assembly (3) comprises a support part (31) and a lifting part (32); The lifting part (32) is vertically arranged in the base support (1); The support part (31) is arranged at the upper end of the lifting part (32) and is horizontally telescopic for supporting or separating from the four side walls of the rectangular pile hole (5); The lifting part (32) is vertically telescopic and can drive the base support (1) and the transmission system (2) to stepwise move downward in the vertical direction; The support part (31) comprises a plurality of support units (311) arranged in the same plane; Two adjacent support units (311) are connected by a support rod (312) to form a polygonal frame, and two of the support units (311) are arranged opposite to each other; The support unit (311) comprises a first telescopic member (3111) and a support shoe (3112); The first telescopic member (3111) is arranged in the horizontal direction, and the fixed ends of two adjacent first telescopic members (3111) are connected by the support rod (312); The telescopic ends of the adjacent first telescopic members (3111) extend outwardly in the horizontal direction of the polygonal frame; The telescopic end of the first telescopic member (3111) is provided with the support shoe (3112), and the opposite two support shoes (3112) are arranged opposite to each other; The lifting part (32) comprises a plurality of second telescopic members (321); The plurality of second telescopic members (321) correspond one-to-one to the plurality of support units (311); One end of the second telescopic member (321) is fixed to the fixed end of the first telescopic member (3111), and the other end is connected to the base support (1); The second telescopic member (321) is vertically telescopic to drive the base support (1) to lift; The construction method specifically comprises the following steps: S1, using a rotary digging device to sequentially perform hole drilling and slag removal on all rectangular pile holes; S2, using the rectangular pile hole repairing device to sequentially perform independent hole repairing on the rectangular pile holes that have completed the hole drilling and slag removal; S3, using the rotary digging device to sequentially perform slag removal on the rectangular pile holes that have completed the independent hole repairing, and completing the hole forming construction of all the rectangular pile holes; When one or more rectangular pile holes have completed the hole drilling and slag removal in step S1, step S2 is started; When one or more rectangular pile holes have completed the independent hole repairing in step S2, step S3 is started.

2. The construction method for rectangular pile hole forming according to claim 1, wherein Six support units (311) and six support rods (312) form a hexagon. Six said boots (3112) for corresponding to support the four side walls of the rectangular pile hole (5); Among them, the two farthest and oppositely arranged boots (3112) correspond to the two smaller area side walls of the rectangular pile hole (5), and the other four boots (3112) are divided into two groups and correspond to the two larger area side walls of the rectangular pile hole (5).

3. The rectangular pile hole forming construction method according to claim 1 or 2, characterized in that, Step S2 comprises, S21, the hole repairing equipment is supported and fixed to the inner wall of the rectangular pile hole which has completed the hole drilling and slag removal; S22, the hole repairing equipment is elongated downward, and stops elongating after excavating a specified distance; S23, the hole repairing equipment cancels the support and shrinks downward by a specified distance; Repeat steps S21, S22 and S23 to complete the whole hole repairing process.

4. The rectangular pile hole forming construction method according to claim 3, characterized in that, In step S21, the support and fixation of the hole repairing equipment comprises supporting the hole repairing equipment on the inner wall of the rectangular pile hole in the horizontal direction, and simultaneously, the hole repairing equipment is hung above the corresponding rectangular pile hole by using the suspension equipment.

5. The rectangular pile hole forming construction method according to claim 4, characterized in that, In step S2, the transfer process of the hole repairing equipment between adjacent rectangular pile holes which have completed the hole drilling and slag removal is that the hole repairing equipment is lifted and transferred to the next rectangular pile hole which has completed the hole drilling and slag removal by using the suspension equipment; Wherein, if the horizontal heights of the adjacent two rectangular pile holes are consistent, the transfer process of the hole repairing equipment is that the suspension equipment moves along the parallel track arranged below it.

6. The rectangular pile hole forming construction method according to claim 5, characterized in that, In step S2, if the horizontal heights of the adjacent two rectangular pile holes are inconsistent, the transfer process of the hole repairing equipment is that the suspension equipment, the hole repairing equipment and the parallel track are transferred to the next rectangular pile hole which has completed the hole drilling and slag removal by using the hoisting equipment.

7. The rectangular pile hole forming construction method according to claim 1, characterized in that, In step S1, the hole drilling process of the rotary drilling equipment comprises, S11, determining the caliber range of the rectangular pile hole to be constructed, and performing rectangular locking construction; S12, using a first drill bit to drill downward along the edges of the rectangular lock in turn, and the first drill bit is tangent to at least one side of the rectangular lock in each drilling; S13, using a second drill bit to drill downward along the edges of the rectangular lock to form an under-excavation part, and the drilling diameter of the second drill bit is twice the drilling diameter of the first drill bit, and the second drill bit is tangent to at least two sides of the rectangular lock in each drilling.

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