Casing pipe follow-up anchor rod construction structure and matched construction technology thereof

Abstract

The invention relates to a casing pipe follow-up anchor rod construction structure and a matched construction technology thereof, and relates to the field of slope anchoring construction, the casing pipe follow-up anchor rod construction structure comprises an excavator chassis, the excavator chassis is provided with an arm support, a workbench, a drilling machine, a drilling rod and a casing pipe, and the drilling rod and the casing pipe are installed on the drilling machine; the rack is arranged on the workbench; the bearing table is rotationally connected to the rack, and a plurality of sleeves are placed on the bearing table; the self-alignment mounting mechanism is arranged on the bearing table and used for automatically adjusting, aligning and connecting the to-be-spliced sleeve on the bearing table and the sleeve driven into the soil body; and the rotary moving mechanism is arranged between the bearing table and the rack and used for fixing the sleeve on the bearing table, driving the bearing table to move in the horizontal direction and driving the bearing table to rotate to the angle matched with a drill rod on the drilling machine. The construction method has the advantages that rapid construction of complex and poor side slope stratums containing sand layers, soft soil, silt sand inclusion layers and the like is met, the construction difficulty of constructors is lowered, and the construction efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of slope anchoring construction, and in particular to a casing follow-up anchor rod construction structure and its supporting construction process. Background Art

[0002] Anchor technology is widely used in projects such as slope stabilization and foundation pit support. When faced with complex geological conditions, especially complex and unfavorable strata such as sand layers, soft soil, and silt-sand layers, traditional anchor construction methods often encounter problems such as hole collapse and drill jam during the drilling process, resulting in low construction efficiency and increased costs. To solve the above problems, the engineering community has proposed a drilling method that uses casing to follow anchors, that is, during the drilling process, the casing is used to support the hole wall to prevent hole collapse.

[0003] At present, when casing is followed by anchor construction on the slope, the construction structure mainly includes an intelligent anchor machine for drilling (including an excavator chassis, a boom, and a workbench, a drill rig and a drill rod installed at the end of the boom arm), a casing for supporting the hole wall during the casing follow-up drilling process, an anchor composed of a steel strand and an isolation frame, a grouting pipe for grouting into the borehole, grouting equipment for preparing and injecting slurry (including a grouting pump, a mixer, etc.), and tensioning equipment for tensioning the anchor (including a tensioning jack, a pressure gauge, a lock, etc.). When the slope is reinforced by the casing follow-up anchor construction structure, the drilling rig is first used to drill. During the drilling process, the casing and drill rod are followed synchronously to protect the hole wall and prevent collapse. The casing is followed by the rotation and thrust of the drilling rig, and the casing and drill rod are spliced, that is, as the drilling depth increases, the drill rod and casing need to be spliced ​​section by section. When the drilling depth does not reach the designed depth, the drill rod needs to be pulled out and spliced ​​with a new drill rod. At the same time, the new casing is spliced ​​with the casing threaded part that has been driven into the slope soil. When the drilling reaches the designed depth, drilling is stopped, and the casing has reached the predetermined depth. However, for the splicing of casing, construction workers are required to lift the heavy casing, rotate it at an angle to connect it with the casing that has been driven into the slope soil, and continuously rotate the casing to be spliced ​​to connect the threaded part of the casing to be spliced ​​with the casing that has been driven into the soil. The splicing process is not only inefficient but also difficult. Especially for complex and unfavorable strata containing sand layers, soft soil, silt and sand layers, the depth and diameter of the borehole need to be increased, and the diameter and weight of the casing also increase dramatically, which greatly increases the difficulty of construction. Summary of the invention

[0004] In order to meet the needs of rapid construction of complex and unfavorable slope strata containing sand layers, soft soil, silt and sand layers, reduce the construction difficulty of construction personnel and improve construction efficiency, this application provides a casing follow-up anchor construction structure and its supporting construction process.

[0005] The casing follow-up anchor construction structure and its supporting construction process provided in this application adopt the following technical solutions: In a first aspect, the present application provides a casing follow-up anchor construction structure, comprising: An excavator chassis, wherein a boom, a workbench, a drilling rig, and a drill rod and a casing installed on the drilling rig are arranged on the excavator chassis; A frame, arranged on a workbench; A bearing platform is rotatably connected to the frame, and a plurality of sleeves are placed on the bearing platform; A self-aligning installation mechanism is arranged on the bearing platform and is used to automatically align and connect the casing to be spliced ​​on the bearing platform with the casing that has been driven into the soil; The rotating and moving mechanism is arranged between the bearing platform and the frame, and is used to fix the casing on the bearing platform and drive the bearing platform to move in the horizontal direction, and drive the bearing platform to rotate to an angle suitable for the drill rod on the drilling rig.

[0006] By adopting the above technical solution, when the slope is reinforced with casing and anchor bolts, first the excavator chassis is positioned at the construction position, the boom and the workbench are adjusted to a suitable position to ensure the safety of the construction personnel, and then the angle between the drill rig and the drill rod is adjusted to align the drill rod with the target drilling position, and then the drill rig is started and the drill rod begins to drill. At the same time, the casing follows the drill rod synchronously to protect the hole wall and prevent collapse. The casing follow-up during the drilling process is achieved by the rotation and thrust of the drill rig. When the drilling depth does not reach the designed depth and the length of the drill rod and casing needs to be increased, the construction personnel operate the drill rig to disconnect the clamping of the drill rod that has been driven into the soil. At the same time, the angle of the carrier is adjusted by the rotating and moving mechanism, so that the casing to be spliced ​​on the carrier is rotated to be roughly consistent with the angle of the drill rod on the drilling rig. Then, the self-aligning installation mechanism is used to automatically adjust and align the casing to be spliced ​​on the carrier. After alignment, the casing to be spliced ​​is rotated to connect it with the casing that has been driven into the soil. This process does not require manual alignment and rotation, which greatly reduces the difficulty of construction and achieves precise splicing. Then, the drilling rig is controlled to rotate to thread the new drill rod with the drill rod that has been driven into the soil. Then, the drilling rig, drill rod and casing are continued to drill holes on the slope until the hole reaches the designed depth. After that, drilling is stopped. At this time, the casing has reached the predetermined depth. Then the construction personnel pull out the drill rod, insert the anchor rod and grouting pipe into the bottom of the casing for grouting. During the grouting process, the grouting pipe and casing are pulled out while grouting until the hole is filled with cement slurry, thereby enhancing the bonding force between the anchor rod and the surrounding soil. After the strength of the anchor body reaches the designed strength, the tensioning equipment is used to prestress the anchor rod to ensure that the prestress meets the design requirements. The automatic calibration, alignment and rotation splicing of the casing are realized through the coordinated use of the self-aligning installation mechanism and the rotating movement mechanism, without the need for construction personnel to lift the heavy casing support The self-aligning installation mechanism ensures the accuracy of casing splicing, reduces construction problems such as casing being difficult to rotate and stuck or casing not being tightly connected due to inaccurate alignment, improves project quality and stability, and reduces construction risks, especially in complex and poor strata such as sand layers, soft soil, silt and sand layers, thereby reducing safety accidents caused by improper manual operation.

[0007] Optionally, the self-aligning mounting mechanism comprises: A supporting shaft is fixed to the frame; A rotating seat is sleeved on the outer side of the supporting shaft; The sliding shaft is arranged on the rotating seat, the rotating seat sleeve is arranged outside the sliding shaft, and the sliding shaft is arranged perpendicular to the supporting shaft; A support seat, fixed on the sliding shaft; The centering clamping assembly is arranged on the support seat, and is used to clamp the outer wall of the casing that has been driven into the soil, and drive the support seat to rotate until it is flush with the center line of the casing that has been driven into the soil; A rotary docking assembly is arranged on the support seat and is used to clamp and rotate the sleeves to be spliced; When the rotating docking assembly clamps the casing to be spliced, the center lines of the casing to be spliced ​​and the casing clamped by the centering clamping assembly and driven into the soil are located in the same straight line.

[0008] By adopting the above technical scheme, when a new casing needs to be spliced, the centering clamping assembly first positions and clamps the outer wall of the casing that has been driven into the soil. During the clamping process of the centering clamping assembly, the support seat will be driven to rotate precisely by a small amount. If the centering clamping assembly is misaligned with the casing that has been driven into the soil in the horizontal direction, during the clamping process of the centering clamping assembly, the support seat, the sliding shaft and the rotating seat will be driven to move along the length direction of the support shaft, so that the support seat is finally kept flush with the center line of the casing that has been driven into the soil to achieve precise positioning. After the centering clamping assembly clamps the casing that has been driven into the soil, the support seat cannot move. At this time, the positions of the centering clamping assembly and the rotating docking assembly are relatively fixed. Then the construction personnel drive the casing to be spliced ​​on the bearing platform to move to the approximate position facing the side of the casing that has been driven into the soil through the rotating moving mechanism, and release the fixing of the casing to be spliced. The casing to be spliced ​​slides down under the action of gravity and abuts against the casing that has been driven into the soil. Then the construction personnel start the rotary docking assembly to drive the casing to be spliced ​​to rotate and feed it to one side of the casing that has been driven into the soil, so as to realize the splicing of the new casing. The above process can be repeated until all the casings are spliced ​​and the designed depth is reached. Among them, the high-precision automatic splicing of the casing is realized through the coordinated cooperation of the self-aligning installation mechanism, the rotary docking assembly, the support shaft, the rotating seat, the sliding shaft and the support seat, thereby improving the construction efficiency and engineering quality. In addition, the operation that originally required multiple people to hold can now be easily operated by one person, thereby reducing the need for construction personnel to directly contact the heavy casing and the manpower demand, and reducing the construction difficulty and risk. At the same time, the self-aligning installation mechanism and the rotary docking assembly can clamp casings of different specifications and diameters, thereby improving the practicality and applicability of the self-aligning installation mechanism.

[0009] Optionally, the centering clamping assembly includes: A centering frame, fixed on the supporting seat; The first clamping plates are provided in two numbers, and the two first clamping plates are symmetrically hinged to the centering frame; The first top tightening plate is slidably connected to the centering frame and is located between the two first clamping plates. The casing that has been driven into the soil body abuts against the two first clamping plates and the first top tightening plate at the same time. Two first synchronous blocks are fixedly provided on both sides of the first top tightening plate. The two first synchronous blocks correspond to the two first clamping plates one by one. The sides of the two first synchronous blocks that are away from each other are inclined surfaces that are inclined downward from the first top tightening plate to the side away from the first top tightening plate, and one end of the first clamping plate abuts against one side of the corresponding inclined surface of the first synchronous block. A first torsion spring is arranged between the first clamping plate and the centering frame, and the first torsion spring always applies a force to move the two first clamping plates away from one end of the first synchronization block away from each other; A first electric telescopic rod is arranged between the first tightening plate and the centering frame; The top of the first clamping plate and the ends of the two first clamping plates away from the first synchronization block are always on the same concentric circle.

[0010] When the first clamping plate is in contact with the second end of the first locking plate, the first locking plate is moved upwards to lock the second end of the first locking plate. When the first clamping plate is in contact with the second end of the first locking plate, the first locking plate is moved upwards to lock the second end of the first locking plate. When the first clamping plate is in contact with the second end of the first locking plate, the first locking plate is moved upwards to lock the second end of the first locking plate. The end of the holding plate away from the first synchronous block is always on the same concentric circle, ensuring that the center position of the sleeve is consistent with the center line of the centering clamping assembly; due to the inclined setting of the inclined surface, the rise of the first clamping plate will force the ends of the two first clamping plates away from the first synchronous block to approach each other, and through the coordinated action of the first clamping plate and the first synchronous block, sleeves of different diameters can be accurately clamped, and at the same time, when the electric telescopic rod drives the first clamping plate to move downward, the torsion spring will drive the ends of the two first clamping plates away from the first synchronous block away from each other, thereby automatically loosening the sleeve and realizing the disassembly process of the two.

[0011] Optionally, the rotary docking assembly includes: A docking frame, fixed on the supporting base; The second clamping plates are provided in two numbers, and the two second clamping plates are symmetrically hinged to the docking frame; The second top plate is slidably connected to the docking frame and is located between the two second clamping plates. The sleeve to be spliced ​​abuts against the two second clamping plates and the second top plate at the same time. Two second synchronization blocks are fixedly arranged on both sides of the second top plate. The two second synchronization blocks correspond to the two second clamping plates one by one. The sides of the two second synchronization blocks away from each other are inclined surfaces inclined downward from the second top plate to the side away from the second top plate, and one end of the second clamping plate abuts against one side of the corresponding inclined surface of the second synchronization block. A second torsion spring is arranged between the second clamping plate and the centering frame, and the second torsion spring always applies a force to the two second clamping plates to move away from each other at one end away from the second synchronization block; A second electric telescopic rod is arranged between the second top tightening plate and the docking frame; Among them, the top of the second clamping plate and the end of the two second clamping plates away from the second synchronization block are always on the same concentric circle, and the ends of the two second clamping plates away from the second synchronization block and the top of the second clamping plate are fixed with a rotating shaft, and the outer side of the rotating shaft is slidably connected to a roller frame along its length direction, and a roller is rotatably connected to the roller frame, and a hub motor is arranged inside the roller.

[0012] By adopting the above technical scheme, when it is necessary to splice the casing to be spliced ​​with the casing that has been driven into the soil, the casing to be spliced ​​is first placed between the two second clamping plates and the second tightening plate, and then the second electric telescopic rod drives the second tightening plate to move upward, and the second tightening plate will drive the two second clamping plates away from the second synchronous block The end of the second tightening plate approaches each other under the action of the second synchronous block, and as the second tightening plate continues to rise, the two second clamping plates gradually move closer to the center under the action of the inclined surface of the second synchronous block until the casing abuts against the two second clamping plates and the second tightening plate at the same time, that is, The casing to be spliced ​​can be clamped tightly, and the top of the second clamping plate and the end of the two second clamping plates away from the second synchronization block are always on the same concentric circle, ensuring that the center position of the casing is consistent with the center line of the rotary docking assembly, and then the hub motor is started, the hub motor will drive the roller to rotate, and the roller drives the casing to be spliced ​​to rotate, thereby connecting the threaded portion of the casing to be spliced ​​with the threaded portion of the casing that has been driven into the soil, and in the process of splicing the two casings, the roller will be located on the rotating axis and move toward the side of the casing that has been driven into the soil, thereby facilitating the splicing of the two casings.

[0013] Optionally, a return spring is sleeved on the outer side of the rotating shaft, and the return spring applies a force to the roller to move away from the centering clamping assembly.

[0014] By adopting the above technical solution, after the roller splices the casing to be spliced ​​with the casing that has been driven into the soil, the roller automatically resets to the initial position under the pulling force of the reset spring and the guiding action of the rotating shaft.

[0015] Optionally, the rotational movement mechanism includes: Flip the shaft and rotate it to connect it to the frame; A support block is disposed between the flip shaft and the bearing platform, and the support block is fixedly connected to the flip shaft; Electric clamps, which are arranged above the bearing platform and are provided in multiple numbers, are used to clamp the casing to be spliced; A self-locking rotating assembly is provided between the frame and the workbench, and is used to drive the flip shaft to rotate and lock the angle of the flip shaft after rotation; The moving component is arranged between the supporting block and the bearing platform, and is used for driving the bearing platform to move.

[0016] By adopting the above technical solution, when the casing to be spliced ​​is transported to the self-aligning installation mechanism through the rotating moving mechanism, the self-locking rotating component is used to drive the flip shaft to rotate, and the flip shaft drives the support block, the moving component, the bearing platform and the casing to rotate, so that the casing to be spliced ​​on the bearing platform is rotated to an angle roughly consistent with the drill rod on the drilling rig, and then the flip shaft is locked to ensure that the bearing platform remains stable in subsequent operations. Then the construction personnel drive the bearing platform to move through the moving component, so that the casing to be spliced ​​on the bearing platform moves to the side facing the casing that has been driven into the soil. The construction personnel then activate the self-aligning installation mechanism to splice the casing to be spliced ​​with one side of the casing that has been driven into the soil; the self-locking rotating assembly can adjust the angle of the bearing platform to make the angle of the casing and the drill rod roughly consistent, thereby improving the convenience and efficiency of splicing; and the self-locking rotating assembly has a locking function, thereby improving the stability of the bearing platform after adjusting the angle and reducing the safety hazards caused by angle deviation.

[0017] Optionally, the mobile component includes: A support plate, fixed to the support block; A slider is fixed to the support plate, the bearing platform is provided with a slide groove along its length direction, and the slider is slidably connected to the slide groove; A roller is rotatably connected to the slider and can roll in the slide groove; The limiting component is arranged between the supporting plate and the bearing platform, and is used to limit the moving boundary of the bearing platform.

[0018] By adopting the above technical solution, the center of the bearing platform is initially located at the center position of the slide groove. When it is necessary to adjust the position of the bearing platform left and right to splice the casing, the construction personnel pull the bearing platform so that the bearing platform drives the casing to be spliced ​​to move to the side of the casing that has been driven into the soil. The roller rolls in the slide groove to reduce the friction between the slider and the slide groove, thereby facilitating the construction personnel to move the bearing platform and improving the smoothness of the sliding process of the bearing platform. The limiting component limits the boundary of the bearing platform during the sliding process to avoid the separation of the support plate and the bearing platform due to excessive sliding, thereby improving the stability of equipment operation.

[0019] Optionally, the limiting component includes two limiting groups respectively located on both sides of the support plate in a direction perpendicular to the moving direction of the load-bearing platform, and the two limiting groups are centrally symmetrical along the center of the load-bearing platform; Each of the limit groups includes a first limit block fixedly mounted on the support plate and a second limit block fixedly mounted on the bearing platform, and the first limit block and the second limit block are located on a side of the support plate and the bearing platform that are away from each other.

[0020] By adopting the above technical solution, when the load platform moves along the slide groove, the second limit block on the load platform maintains a relative position with the first limit block on the support plate, ensuring the boundary limitation of the load platform during the sliding process; when the load platform moves left or right to the extreme position, the second limit block contacts the first limit block, preventing the load platform from further moving, thereby ensuring the stability of the load platform at the desired position.

[0021] Optionally, the self-locking rotating assembly includes: A worm gear is fixedly sleeved on the turning shaft; A worm, rotatably connected to the workbench and meshing with the worm wheel; The driving motor is arranged at one end of the worm.

[0022] By adopting the above technical solution, when the angle of the workbench needs to be adjusted, the drive motor starts to drive the worm to rotate, the worm drives the worm wheel and the flip shaft to rotate, and then the flip shaft drives the support block and the support plate to rotate, and the support plate can drive the moving component and the load-bearing platform to rotate, thereby adjusting the angle of the load-bearing platform until the desired angle position is reached; when the workbench rotates to the desired position, the drive motor stops working, and due to the self-locking characteristics of the worm gear, the load-bearing platform can maintain its current position without power input even under the action of gravity or other external forces.

[0023] In the second aspect, the present application also provides a supporting construction process for a casing follow-up anchor rod construction structure, which is applicable to the above-mentioned casing follow-up anchor rod construction structure, and the construction steps are as follows: S1. The excavator chassis is moved to the position below the construction site, and the boom and workbench are adjusted to the slope construction site; S2. Adjust the angle between the drill rig and the drill rod so that the drill rod is aligned with the target drilling position. Then start the drill rig and the drill rod starts drilling. At the same time, the casing follows the drill rod to protect the hole wall. S3. When the drilling depth does not reach the designed depth and the length of the drill rod and casing needs to be increased, the drilling rig is controlled to disconnect the clamping of the drill rod that has been driven into the soil, and at the same time, the angle of the bearing platform is adjusted through the rotating movement mechanism so that the casing to be spliced ​​on the bearing platform is rotated to the same angle as the drill rod on the drilling rig; S4, using the self-aligning installation mechanism to automatically adjust and align the casing to be spliced ​​on the bearing platform, after alignment, rotating the casing to be spliced ​​to connect it with the casing that has been driven into the soil, and controlling the drilling rig to rotate to thread the new drill rod into the drill rod that has been driven into the soil; S5, continue drilling the slope using the drilling rig, drill rod, and casing until the drilling reaches the designed depth and then stops drilling. At this time, the casing also reaches the predetermined depth; S6, then the drill rod is pulled out, and the anchor rod and the grouting pipe are inserted into the bottom of the casing to perform grouting operation. During the grouting process, the grouting pipe and the casing are pulled out while grouting until the hole is filled with cement slurry; S7. After the strength of the anchor body reaches 75% of the design strength, use tensioning equipment to prestress the anchor rod to ensure that the prestress meets the design requirements.

[0024] In summary, the present application includes at least one of the following beneficial technical effects: 1. Through the coordinated use of the self-aligning installation mechanism and the rotating and moving mechanism, the automatic calibration, alignment and rotational splicing of the casing are realized, without the need for construction workers to lift the heavy casing and rotate it to dock with the casing that has been driven into the soil of the slope. At the same time, the casing to be spliced ​​is continuously rotated to connect the threaded part of the casing to be spliced ​​with the casing that has been driven into the soil, which not only significantly improves the construction efficiency but also reduces the labor intensity of construction workers; and the self-aligning installation mechanism ensures the accuracy of casing splicing, reduces construction problems such as casing being difficult to rotate and stuck or casing being loosely connected due to inaccurate alignment, improves the quality and stability of the project, and reduces construction risks, especially in complex and unfavorable formations such as sand layers, soft soils, and silt-sand layers, and reduces safety accidents caused by improper manual operation; 2. The self-aligning installation mechanism realizes high-precision automatic splicing of the casing through the coordinated cooperation of the self-aligning installation mechanism, the rotating docking assembly, the support shaft, the rotating seat, the sliding shaft and the support seat, thereby improving the construction efficiency and engineering quality. In addition, the original operation required multiple people to hold the casing, but now it can be easily operated by one person, reducing the need for construction workers to directly contact heavy casing and the manpower requirements, reducing the construction difficulty and risk. At the same time, the self-aligning installation mechanism and the rotating docking assembly can clamp casings of different specifications and diameters, thereby improving the practicality and applicability of the self-aligning installation mechanism; 3. Due to the inclined setting of the inclined surface in the centering clamping assembly, the rise of the first clamping plate will force the ends of the two first clamping plates away from the first synchronous block to approach each other, and through the coordinated action of the first clamping plate and the first synchronous block, the sleeves of different diameters can be accurately clamped. At the same time, when the electric telescopic rod drives the first clamping plate to move downward, the torsion spring will drive the ends of the two first clamping plates away from the first synchronous block to move away from each other, thereby automatically loosening the sleeve and realizing the disassembly process of the two; 4. The hub motor in the rotary docking assembly drives the roller to rotate, and the roller drives the casing to be spliced ​​to rotate, so as to connect the threaded part of the casing to be spliced ​​with the threaded part of the casing that has been driven into the soil, and in the process of splicing the two casings, the roller will be located on the rotating shaft and move toward the side of the casing that has been driven into the soil, so as to facilitate the splicing of the two casings; and after the roller splices the casing to be spliced ​​with the casing that has been driven into the soil, the roller automatically resets under the pulling force of the reset spring and the guiding action of the rotating shaft and returns to the initial position; 5. The self-locking rotating assembly in the rotating moving mechanism can adjust the angle of the bearing platform so that the angles of the casing and the drill pipe are roughly consistent, which improves the convenience and efficiency of splicing. The self-locking rotating assembly has a locking function, which improves the stability of the bearing platform after the angle is adjusted and reduces the safety hazards caused by angle deviation; 6. The self-locking rotating assembly has a self-locking feature, and the carrier can remain in the current position without power input even under the action of gravity or other external forces. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the casing follow-up anchor construction structure in this application; Figure 2 It is a local structural schematic diagram showing the casing follow-up anchor construction structure; Figure 3 is a structural schematic diagram showing a self-aligning mounting mechanism; Figure 4 is a partial cross-sectional schematic diagram showing a self-aligning mounting mechanism; Figure 5 Yes means Figure 4 A schematic diagram of the partially enlarged structure of part A; Figure 6 is a structural schematic diagram showing a rotary movement mechanism; Figure 7 It is a schematic diagram showing the structure when the carrier platform moves to one side.

[0026] Description of the accompanying drawings: 1. excavator chassis; 11. boom; 2. workbench; 3. drilling rig; 4. casing; 5. frame; 6. bearing platform; 61. slideway; 7. self-aligning mounting mechanism; 71. support shaft; 72. rotating seat; 73. sliding shaft; 74. support seat; 75. limit seat; 76. centering clamping assembly; 761. centering frame; 762. first clamping plate; 763. first top tightening plate; 764. first synchronization block; 765. first electric telescopic rod; 77. rotating docking assembly; 771. docking frame; 772. second clamping plate; 773. Second top plate; 774. Second synchronization block; 775. Second electric telescopic rod; 776. Rotation axis; 777. Roller frame; 778. Roller; 779. Return spring; 8. Rotational movement mechanism; 81. Flip axis; 82. Support block; 83. Moving assembly; 831. Support plate; 832. Slider; 833. Roller; 834. Limiting component; 8341. First limiting block; 8342. Second limiting block; 84. Self-locking rotation assembly; 841. Worm wheel; 842. Worm; 843. Driving motor; 85. Electric clamp. DETAILED DESCRIPTION

[0027] The following is combined with Figure 1-Figure 7 This application is described in further detail.

[0028] The embodiment of the present application discloses a casing follow-up anchor rod construction structure. Figure 1 and Figure 2 The casing follow-up anchor construction structure includes an excavator chassis 1, on which a boom 11, a workbench 2, a drilling rig 3, and a drill rod and a casing 4 installed on the drilling rig 3 are arranged. A frame 5 is arranged on the workbench 2, and a bearing platform 6 is rotatably connected to the frame 5. A plurality of casings 4 to be spliced ​​are placed on the bearing platform 6 along its length. A self-aligning installation mechanism 7 is arranged on the bearing platform 6, and the self-aligning installation mechanism 7 is used to automatically adjust, align and connect the casing 4 to be spliced ​​on the bearing platform 6 with the casing 4 that has been driven into the soil. A rotating movement mechanism 8 is arranged between the bearing platform 6 and the frame 5, and the rotating movement mechanism 8 is used to fix the casing 4 on the bearing platform 6 and drive the bearing platform 6 to move in the horizontal direction, and drive the bearing platform 6 to rotate to an angle compatible with the drill rod on the drilling rig 3.

[0029] When the slope is reinforced with casing 4 and anchor rods, first position the excavator chassis 1 at the construction position, and adjust the boom 11 and the workbench 2 to the appropriate position to ensure the safety of the construction personnel. Then adjust the angle between the drill rig 3 and the drill rod so that the drill rod is aligned with the target drilling position, start the drill rig 3, and the drill rod begins to drill. At the same time, the casing 4 follows the drill rod to protect the hole wall and prevent collapse. The follow-up of the casing 4 during the drilling process is achieved by the rotation and thrust of the drill rig 3. When the drilling depth does not reach the designed depth and the drill rod and casing 4 length need to be increased, the construction personnel operate the drill rig 3 to pull out the drill rod and splice a new drill rod. At the same time, adjust the angle of the support platform 6 through the rotating and moving mechanism 8, so that the casing 4 to be spliced ​​on the support platform 6 is rotated to be roughly consistent with the angle of the drill rod on the drill rig 3.

[0030] Then, the self-aligning installation mechanism 7 is used to automatically adjust and align the casing 4 to be spliced ​​on the supporting platform 6. After alignment, the casing 4 to be spliced ​​is rotated to connect it with the casing 4 that has been driven into the soil. This process does not require manual alignment and rotation, thereby greatly reducing the construction difficulty and achieving precise splicing. Then, the drilling rig 3 is controlled to rotate and the new drill rod is threadedly connected to the drill rod that has been driven into the soil. Then, the drilling rig 3, the drill rod, and the casing 4 are used to drill the slope until the drilling reaches the designed depth and the drilling is stopped. At this time, the casing 4 also reaches the predetermined depth. Then, the construction personnel pull out the drill rod, insert the anchor rod and the grouting pipe into the bottom of the casing 4 for grouting. During the grouting process, the grouting pipe and the casing 4 are pulled out while grouting until the hole is filled with cement slurry, thereby enhancing the bonding force between the anchor rod and the surrounding soil. After the strength of the anchor body reaches the designed strength, the tensioning equipment is used to prestress the anchor rod to ensure that the prestress meets the design requirements.

[0031] Through the coordinated use of the self-aligning installation mechanism 7 and the rotating and moving mechanism 8, the automatic calibration, alignment and rotational splicing of the casing 4 are achieved, without the need for construction workers to lift the heavy casing 4 and rotate it to mate with the casing 4 that has been driven into the soil of the slope, and at the same time continuously rotate the casing 4 to be spliced ​​so that the casing 4 to be spliced ​​is connected with the casing 4 that has been driven into the soil by the threaded part, which not only significantly improves the construction efficiency but also reduces the labor intensity of construction workers; and the self-aligning installation mechanism 7 ensures the accuracy of the splicing of the casing 4, reduces construction problems such as the casing 4 being difficult to rotate and stuck or the casing 4 being loosely connected due to inaccurate alignment, improves the project quality and stability, and reduces construction risks, especially in complex and poor strata such as sand layers, soft soils, and silt and sand layers, and reduces safety accidents caused by improper manual operation.

[0032] In some embodiments, reference Figure 3 and Figure 4The self-aligning installation mechanism 7 includes a support shaft 71 fixed on the frame 5, and a rotating seat 72 is sleeved on the outer side of the support shaft 71. A sliding shaft 73 is arranged on the rotating seat 72, and the rotating seat 72 is sleeved on the outer side of the sliding shaft 73, and the sliding shaft 73 can rotate and slide along its own axis direction, and the sliding shaft 73 is arranged perpendicular to the support shaft 71. A support seat 74 is fixed on one end of the sliding shaft 73, and a limit seat 75 is fixed on the other end. A centering clamping assembly 76 is arranged on the support seat 74, and the centering clamping assembly 76 is used to clamp the outer wall of the casing 4 that has been driven into the soil, and drive the support seat 74 to rotate until it is flush with the center line of the casing 4 that has been driven into the soil. A rotating docking assembly 77 is arranged on the support seat 74, and the rotating docking assembly 77 is used to clamp and rotate the casing 4 to be spliced. After the rotating docking assembly 77 clamps the casing 4 to be spliced, the center lines of the casing 4 to be spliced ​​and the casing 4 clamped by the centering clamping assembly 76 and driven into the soil are located in the same straight line.

[0033] When a new casing 4 needs to be spliced, the centering clamping assembly 76 first locates and clamps the outer wall of the casing 4 that has been driven into the soil. During the clamping process of the centering clamping assembly 76, the support seat 74 will be driven to rotate precisely and slightly. If the centering clamping assembly 76 is misaligned with the casing 4 that has been driven into the soil in the horizontal direction, during the clamping process of the centering clamping assembly 76, the support seat 74, the sliding shaft 73 and the rotating seat 72 will also be driven to move along the length direction of the support shaft 71, so that the support seat 74 is finally aligned with the center line of the casing 4 that has been driven into the soil, achieving precise positioning. And when the centering clamping assembly 76 clamps the casing 4 that has been driven into the soil, the support seat 74 cannot move. At this time, the positions of the centering clamping assembly 76 and the rotating docking assembly 77 are relatively fixed. Then the construction personnel drive the casing 4 to be spliced ​​on the supporting platform 6 to the approximate position facing the side of the casing 4 that has been driven into the soil through the rotating moving mechanism 8, and release the fixation of the casing 4 to be spliced. The casing 4 to be spliced ​​slides down under the action of gravity and abuts against the casing 4 that has been driven into the soil.

[0034] Then the construction personnel start the rotary docking assembly 77, drive the casing 4 to be spliced ​​to rotate and feed to the side of the casing 4 that has been driven into the soil, so as to realize the splicing of the new casing 4. The above process can be repeated until all the casings 4 are spliced ​​and the designed depth is reached. Among them, through the coordinated cooperation of the self-aligning installation mechanism 7, the rotary docking assembly 77, the support shaft 71, the rotating seat 72, the sliding shaft 73 and the support seat 74, the high-precision automatic splicing of the casing 4 is realized, which improves the construction efficiency and engineering quality. In addition, the original operation required multiple people to hold and hold, but now one person can easily operate it, reducing the need for construction personnel to directly contact the heavy casing 4 and the manpower requirements, reducing the construction difficulty and risk. At the same time, the self-aligning installation mechanism 7 and the rotary docking assembly 77 can clamp the casings 4 of different specifications and diameters, improving the practicality and applicability of the self-aligning installation mechanism 7.

[0035] In some embodiments, reference Figure 3 and Figure 4 The centering clamping assembly 76 includes a centering frame 761 fixed on the support seat 74, and two first clamping plates 762 are symmetrically hinged on the centering frame 761. The first clamping plates 762 are arranged in an arc shape, and the convex surface of the arc faces the side away from the two first clamping plates 762. The centering frame 761 is slidably connected with a first top plate 763 along the vertical direction, and the first top plate 763 is located between the two first clamping plates 762; and the casing 4 driven into the soil body is simultaneously abutted against the two first clamping plates 762 and the first top plate 763; at the same time, the top of the first top plate 763 and the ends of the two first clamping plates 762 away from the first synchronization block 764 are always on the same concentric circle. Two first synchronization blocks 764 are fixed on both sides of the first tightening plate 763. The two first synchronization blocks 764 correspond to the two first clamping plates 762 one by one. The side of the two first synchronization blocks 764 away from each other is an inclined surface inclined downward from the first tightening plate 763 to the side away from the first tightening plate 763; and one end of the first clamping plate 762 abuts against one side of the corresponding inclined surface of the first synchronization block 764. A first torsion spring is arranged between the first clamping plate 762 and the centering frame 761. The first torsion spring always gives a force to keep the two first clamping plates 762 away from the end of the first synchronization block 764 away from each other. A first electric telescopic rod 765 is also arranged between the first tightening plate 763 and the centering frame 761.

[0036] When it is necessary to clamp the casing 4 that has been driven into the soil, the casing 4 is placed between the two first clamping plates 762 and the first tightening plate 763, and then the first electric telescopic rod 765 drives the first tightening plate 763 to move upward, and the first tightening plate 763 drives the two first clamping plates 762, one end of which is away from the first synchronous block 764, to approach each other under the action of the first synchronous block 764. As the first tightening plate 763 continues to rise, the two first clamping plates 762 gradually move closer to the center under the action of the inclined surface of the first synchronous block 764, until the casing 4 abuts against the two first clamping plates 762 and the first tightening plate 763 at the same time, so that the casing 4 that has been driven into the soil can be clamped, and the top of the first tightening plate 763 and the end of the two first clamping plates 762 away from the first synchronous block 764 are always on the same concentric circle, ensuring that the center position of the casing 4 is consistent with the center line of the centering clamping assembly 76. Due to the inclined setting of the inclined surface, the rise of the first clamping plate 763 will force the two first clamping plates 762 to move closer to each other at one end away from the first synchronization block 764, and through the coordinated action of the first clamping plate 763 and the first synchronization block 764, the sleeves 4 of different diameters can be accurately clamped. At the same time, when the electric telescopic rod drives the first clamping plate 763 to move downward, the torsion spring will drive the two first clamping plates 762 to move away from each other at one end away from the first synchronization block 764, thereby automatically loosening the sleeve 4 and realizing the disassembly process of the two.

[0037] In some embodiments, reference Figure 4 and Figure 5 The rotary docking assembly 77 includes a docking frame 771 fixed on the support seat 74, and two second clamping plates 772 are symmetrically hinged on the docking frame 771. The second clamping plates 772 are arranged in an arc shape, and the convex surface of the arc faces the side where the two second clamping plates 772 are away from each other. The docking frame 771 is slidably connected with a second top plate 773 along the vertical direction, and the second top plate 773 is located between the two second clamping plates 772; and the sleeve 4 to be spliced ​​is in contact with the two second clamping plates 772 and the second top plate 773 at the same time; at the same time, the top of the second top plate 773 and the end of the two second clamping plates 772 away from the second synchronization block 774 are always on the same concentric circle. Two second synchronization blocks 774 are fixed on both sides of the second top plate 773. The two second synchronization blocks 774 correspond to the two second clamping plates 772 one by one. The side of the two second synchronization blocks 774 that are away from each other is an inclined surface that is tilted downward from the second top plate 773 to the side away from the second top plate 773; and one end of the second clamping plate 772 abuts against one side of the corresponding inclined surface of the second synchronization block 774. A second torsion spring is arranged between the second clamping plate 772 and the docking frame 771. The second torsion spring always gives the two second clamping plates 772 a force that moves away from one end of the second synchronization block 774. A second electric telescopic rod 775 is also arranged between the second top plate 773 and the docking frame 771.

[0038] Reference Figure 4 and Figure 5 The ends of the two second clamping plates 772 away from the second synchronization block 774 and the top of the second top plate 773 are fixed with a rotating shaft 776, and a roller frame 777 is slidably connected to the outer side of the rotating shaft 776 along its length direction. For example, the rotating shaft 776 is fixed with a spline along its length direction, and the roller frame 777 is provided with a spline groove, and the spline is slidably inserted into the spline groove; or the rotating shaft 776 is fixed with a guide bar and a guide rod along its length direction, and the roller frame 777 is provided with a corresponding guide groove to limit the rotation of the roller frame 777. A roller wheel 778 is rotatably sleeved on the outer side of the roller frame 777, and a hub motor is arranged inside the roller wheel 778. A return spring 779 is sleeved on the outer side of the rotating shaft 776, and the return spring 779 gives the roller 778 a force to move away from the centering clamping assembly 76; when the roller 778 splices the casing 4 to be spliced ​​with the casing 4 that has been driven into the soil, the roller 778 automatically resets to its initial position under the pulling force of the return spring 779 and the guiding action of the rotating shaft 776.

[0039] When it is necessary to splice the sleeve 4 to be spliced ​​with the sleeve 4 that has been driven into the soil, first place the sleeve 4 to be spliced ​​between the two second clamping plates 772 and the second top plate 773. Then the second electric telescopic rod 775 drives the second top plate 773 to move upward, and the second top plate 773 will drive the two second clamping plates 772 to move closer to each other at one end away from the second synchronization block 774 under the action of the second synchronization block 774. As the second top plate 773 continues to rise, the two second clamping plates 772 gradually move closer to the center under the action of the inclined surface of the second synchronization block 774, until the sleeve 4 abuts against the two second clamping plates 772 and the second top plate 773 at the same time, and the sleeve 4 to be spliced ​​can be held tightly. And the top of the second top plate 773 and the end of the two second clamping plates 772 away from the second synchronization block 774 are always on the same concentric circle, ensuring that the center position of the sleeve 4 is consistent with the center line of the rotary docking assembly 77. Then, the hub motor is started, which drives the roller 778 to rotate, and the roller 778 drives the casing 4 to be spliced ​​to rotate, thereby connecting the threaded portion of the casing 4 to be spliced ​​with the threaded portion of the casing 4 that has been driven into the soil. In the process of splicing the two casings 4, the roller 778 will be located on the rotating shaft 776 and move toward the side of the casing 4 that has been driven into the soil, thereby facilitating the splicing of the two casings 4.

[0040] In some embodiments, reference Figure 6 and Figure 7The rotating and moving mechanism 8 includes a flip shaft 81 rotatably connected to the frame 5, and a support block 82 is provided between the flip shaft 81 and the carrier 6. The support block 82 is fixedly connected to the flip shaft 81, and a moving assembly 83 is provided between the support block 82 and the carrier 6, and the moving assembly 83 is used to drive the carrier 6 to move. A self-locking rotating assembly 84 is provided between the frame 5 and the workbench 2, and the self-locking rotating assembly 84 is used to drive the flip shaft 81 to rotate and lock the angle of the flip shaft 81 after rotation. A plurality of electric clamps 85 are provided above the carrier 6, and the electric clamps 85 are used to clamp the sleeve 4 to be spliced.

[0041] When the casing 4 to be spliced ​​is transported to the self-aligning installation mechanism 7 through the rotating moving mechanism 8, the self-locking rotating component 84 is first used to drive the flip shaft 81 to rotate, and the flip shaft 81 drives the support block 82, the moving component 83, the bearing platform 6 and the casing 4 to rotate, so that the casing 4 to be spliced ​​on the bearing platform 6 is rotated to an angle substantially consistent with the drill rod angle on the drilling rig 3, and the flip shaft 81 is locked to ensure that the bearing platform 6 remains stable in subsequent operations. Then the construction personnel drive the bearing platform 6 to move through the moving component 83, so that the casing 4 to be spliced ​​on the bearing platform 6 moves to a general position facing the side of the casing 4 that has been driven into the soil, and releases the fixing of the electric frame clamp on the casing 4 to be spliced. The casing 4 to be spliced ​​slides down under the action of gravity and abuts against the casing 4 that has been driven into the soil. Then the construction personnel start the self-aligning installation mechanism 7 to splice the casing 4 to be spliced ​​with the side of the casing 4 that has been driven into the soil. The self-locking rotating assembly 84 can adjust the angle of the supporting platform 6 so that the angle of the casing 4 is roughly consistent with that of the drill rod, thereby improving the convenience and efficiency during splicing. The self-locking rotating assembly 84 has a locking function, thereby improving the stability of the supporting platform 6 after the angle is adjusted and reducing the safety hazards caused by angle deviation.

[0042] In some embodiments, reference Figure 6 and Figure 7 The moving assembly 83 includes a support plate 831 fixed on the support block 82, a slider 832 fixed on the support plate 831, a slide groove 61 is provided along the length direction of the bearing platform 6, and the slider 832 is slidably connected to the slide groove 61. A roller 833 is rotatably connected to the slider 832, and the roller 833 can be located in the slide groove 61 and roll. A limiting component 834 is provided between the support plate 831 and the bearing platform 6, and the limiting component 834 is used to limit the movement boundary of the bearing platform 6.

[0043] Initially, the center of the bearing platform 6 is located at the center of the slide groove 61. When the position of the bearing platform 6 needs to be adjusted left and right to splice the casing 4, the construction personnel pull the bearing platform 6 so that the bearing platform 6 drives the casing 4 to be spliced ​​to move to the side facing the casing 4 that has been driven into the soil. The roller 833 rolls in the slide groove 61 to reduce the friction between the slider 832 and the slide groove 61, thereby facilitating the construction personnel to move the bearing platform 6 and improving the smoothness of the sliding process of the bearing platform 6. The limiting component 834 limits the boundary of the bearing platform 6 during the sliding process to avoid the separation of the support plate 831 and the bearing platform 6 due to excessive sliding, thereby improving the stability of the equipment operation.

[0044] In some embodiments, reference Figure 6 and Figure 7 The limiting component 834 includes two limiting groups respectively located on both sides of the support plate 831 in the moving direction of the vertical bearing platform 6, and the two limiting groups are centrally symmetrical along the center of the bearing platform 6. Each limiting group includes a first limiting block 8341 fixedly mounted on the support plate 831 and a second limiting block 8342 fixedly mounted on the bearing platform 6, and the first limiting block 8341 and the second limiting block 8342 are located on the side where the support plate 831 and the bearing platform 6 are away from each other.

[0045] When the carrying platform 6 moves along the slide groove 61, the second limit block 8342 on the carrying platform 6 maintains a relative position with the first limit block 8341 on the support plate 831, ensuring the boundary limitation of the carrying platform 6 during the sliding process. When the carrying platform 6 moves left or right to the extreme position, the second limit block 8342 contacts the first limit block 8341 to prevent the carrying platform 6 from moving further, thereby ensuring the stability of the carrying platform 6 at the desired position.

[0046] In some embodiments, reference Figure 6 and Figure 7 The self-locking rotating assembly 84 includes a worm wheel 841 fixedly sleeved on the flip shaft 81, a worm 842 is rotatably connected to the workbench 2, and the worm 842 and the worm wheel 841 are meshed with each other. A driving motor 843 is provided at one end of the worm 842.

[0047] When the angle of the workbench 2 needs to be adjusted, the drive motor 843 is started, driving the worm 842 to rotate, the worm 842 drives the worm wheel 841 and the flip shaft 81 to rotate, and then the flip shaft 81 drives the support block 82 and the support plate 831 to rotate, and the support plate 831 can drive the moving component 83 and the carrier 6 to rotate, thereby adjusting the angle of the carrier 6 until the desired angle position is reached. When the workbench 2 rotates to the desired position, the drive motor 843 stops working. Due to the self-locking characteristics of the worm wheel 841 and the worm 842, even under the action of gravity or other external forces, the carrier 6 can remain in the current position without power input.

[0048] In the second aspect, the present application also discloses a supporting construction process for a casing follow-up anchor rod construction structure, which is applicable to the above-mentioned casing follow-up anchor rod construction structure, and the construction steps are as follows: S1. The excavator chassis 1 is moved below the position to be constructed, and the boom 11 and the workbench 2 are adjusted to the position to be constructed on the slope.

[0049] S2. Use a protractor to measure the angle of the drill rod, adjust the angle between the drill rig 3 and the drill rod, align the drill rod with the target drilling position, then start the drill rig 3, the drill rod starts drilling, and at the same time, the casing 4 follows the drill rod to protect the hole wall.

[0050] S3. When the drilling depth does not reach the designed depth and the length of the drill rod and casing 4 needs to be increased, the drilling rig 3 is controlled to disconnect the clamping of the drill rod that has been driven into the soil, and at the same time, the angle of the supporting platform 6 is adjusted by the rotating moving mechanism 8 so that the casing 4 to be spliced ​​on the supporting platform 6 is rotated to be consistent with the angle of the drill rod on the drilling rig 3.

[0051] S4. Use the self-aligning installation mechanism 7 to automatically adjust and align the casing 4 to be spliced ​​on the supporting platform 6. After alignment, rotate the casing 4 to be spliced ​​to connect it with the casing 4 that has been driven into the soil. When splicing the casing 4, remove the mud and sand from the thread of the casing 4, apply a small amount of butter, so that the new casing 4 and the casing 4 that has been driven into the soil are on the same axis, and then control the drilling rig 3 to rotate and thread the new drill rod to the drill rod that has been driven into the soil.

[0052] S5, continue drilling the slope using the drilling rig 3, drill rod, and casing 4 until the hole reaches the designed depth and then stops drilling. At this time, the casing 4 also reaches the predetermined depth, and repeatedly flushes the mud and sand in the casing 4 with water until the outer casing 4 overflows with clean water.

[0053] S6, then the drill rod is pulled out, the anchor rod and the grouting pipe are inserted into the bottom of the casing 4 for grouting operation, and the grouting pipe and the casing 4 are pulled out while grouting, and the grouting is replenished once every time a ~ outer casing 4 is pulled out until the hole is filled with cement slurry.

[0054] S7. After the strength of the anchor body reaches the design strength%, use tensioning equipment to prestress the anchor rod to ensure that the prestress meets the design requirements.

[0055] The implementation principle of a casing follow-up anchor rod construction structure and its supporting construction process in the embodiment of the present application is as follows: when the casing 4 is followed by anchor rod reinforcement construction on the slope, the excavator chassis 1 is first positioned at the construction position, the boom 11 and the workbench 2 are adjusted to a suitable position to ensure the safety of the construction personnel, and then the angle between the drill rig 3 and the drill rod is adjusted to align the drill rod with the target drilling position, and then the drill rig 3 is started, and the drill rod starts drilling. At the same time, the casing 4 follows up synchronously with the drill rod to protect the hole wall and prevent collapse. The follow-up of the casing 4 during the drilling process is achieved by the rotation and thrust of the drill rig 3. When the drilling depth does not reach the designed depth and the length of the casing 4 needs to be increased, the construction personnel control the drill rig 3 to disconnect the casing 4. The drill rod that has been driven into the soil is clamped, and the angle of the carrier 6 is adjusted by the rotating and moving mechanism 8, so that the casing 4 to be spliced ​​on the carrier 6 is rotated to be roughly consistent with the angle of the drill rod on the drilling rig 3, and then the self-aligning installation mechanism 7 is used to automatically adjust and align the casing 4 to be spliced ​​on the carrier 6. After alignment, the casing 4 to be spliced ​​is rotated to connect it with the casing 4 that has been driven into the soil. This process does not require manual alignment and rotation, thereby greatly reducing the construction difficulty and achieving precise splicing. Then, a new drill rod is installed on the drilling rig 3, and the drilling rig 3 is controlled to rotate to thread the new drill rod with the drill rod that has been driven into the soil, and then the drilling rig 3, the drill rod, and the casing are continued to be connected. 4. Drilling construction is performed on the slope until the drilling reaches the designed depth and then the drilling is stopped. At this time, the casing 4 also reaches the predetermined depth. Then the construction personnel pull out the drill rod, insert the anchor rod and the grouting pipe into the bottom of the casing 4 for grouting. During the grouting process, the grouting pipe and the casing 4 are pulled out while grouting until the hole is filled with cement slurry, thereby enhancing the bonding force between the anchor rod and the surrounding soil. After the strength of the anchor body reaches the designed strength, the anchor rod is prestressed using tensioning equipment to ensure that the prestress meets the design requirements. Among them, the automatic calibration, alignment and rotation splicing of the casing 4 are realized through the coordinated use of the self-aligning installation mechanism 7 and the rotating movement mechanism 8, etc., without the need for construction The personnel lift up the heavy casing 4 and rotate it to dock with the casing 4 that has been driven into the soil of the slope, and at the same time continuously rotate the casing 4 to be spliced ​​so that the casing 4 to be spliced ​​is connected with the casing 4 that has been driven into the soil through the threaded part, which not only significantly improves the construction efficiency but also reduces the labor intensity of the construction personnel; and the self-aligning installation mechanism 7 ensures the accuracy of the splicing of the casing 4, reduces the construction problems such as the casing 4 being difficult to rotate and stuck or the casing 4 being not tightly connected due to inaccurate alignment, improves the project quality and stability, and reduces the construction risk at the same time, especially in complex and unfavorable formations such as sand layers, soft soil, silt and sand layers, and reduces the safety accidents caused by improper manual operation.

[0056] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. The casing follows the anchor bolt construction structure, which is characterized by: include: An excavator chassis (1), wherein the excavator chassis (1) is provided with a boom (11), a workbench (2), a drilling rig (3), and a drill rod and a casing (4) installed on the drilling rig (3); A frame (5) is arranged on the workbench (2); A bearing platform (6) is rotatably connected to the frame (5), and a plurality of sleeves (4) are placed on the bearing platform (6); A self-aligning installation mechanism (7) is arranged on the bearing platform (6) and is used to automatically align and connect the casing (4) to be spliced ​​on the bearing platform (6) with the casing (4) already driven into the soil; The rotary movement mechanism (8) is arranged between the bearing platform (6) and the frame (5), and is used to fix the casing (4) on the bearing platform (6) and drive the bearing platform (6) to move in the horizontal direction, and drive the bearing platform (6) to rotate to an angle that matches the drill rod on the drilling rig (3).

2. The casing-following anchor bolt construction structure according to claim 1 is characterized in that: The self-aligning mounting mechanism (7) comprises: A support shaft (71) is fixedly mounted on the frame (5); A rotating seat (72) is sleeved on the outer side of the supporting shaft (71); The sliding shaft (73) is arranged on the rotating seat (72), the rotating seat (72) is sleeved on the outside of the sliding shaft (73), and the sliding shaft (73) and the supporting shaft (71) are arranged perpendicularly; A support seat (74) is fixedly mounted on the sliding shaft (73); A centering clamping assembly (76) is arranged on the support seat (74) and is used to clamp the outer wall of the casing (4) that has been driven into the soil, and drive the support seat (74) to rotate until it is flush with the center line of the casing (4) that has been driven into the soil; A rotary docking assembly (77), arranged on the support seat (74), for clamping and rotating the sleeves (4) to be spliced; When the rotating docking assembly (77) clamps the sleeve (4) to be spliced, the center lines of the sleeve (4) to be spliced ​​and the sleeve (4) clamped by the centering clamping assembly (76) and driven into the soil are located on the same straight line.

3. The casing-following anchor bolt construction structure according to claim 2 is characterized in that: The centering clamping assembly (76) comprises: A centering frame (761) is fixedly mounted on the support seat (74); Two first clamping plates (762) are provided, and the two first clamping plates (762) are symmetrically hinged to the centering frame (761); A first tightening plate (763) is slidably connected to the centering frame (761) and is located between the two first clamping plates (762). The casing (4) driven into the soil body abuts against the two first clamping plates (762) and the first tightening plate (763) at the same time. Two first synchronization blocks (764) are fixedly arranged on both sides of the first tightening plate (763). The two first synchronization blocks (764) correspond to the two first clamping plates (762) one by one. The sides of the two first synchronization blocks (764) that are away from each other are inclined surfaces that are arranged downward from the first tightening plate (763) to the side away from the first tightening plate (763), and one end of the first clamping plate (762) abuts against one side of the corresponding inclined surface of the first synchronization block (764). A first torsion spring is arranged between the first clamping plate (762) and the centering frame (761), and the first torsion spring always applies a force to keep the two first clamping plates (762) away from one end of the first synchronization block (764) away from each other; A first electric telescopic rod (765) is arranged between the first tightening plate (763) and the centering frame (761); The top of the first tightening plate (763) and the ends of the two first clamping plates (762) away from the first synchronization block (764) are always on the same concentric circle.

4. The casing-following anchor bolt construction structure according to claim 2 is characterized in that: The rotary docking assembly (77) comprises: A docking frame (771) is fixed to the support base (74); The second clamping plates (772) are provided in two numbers, and the two second clamping plates (772) are symmetrically hinged to the docking frame (771); The second top clamping plate (773) is slidably connected to the docking frame (771) and is located between the two second clamping plates (772). The sleeve (4) to be spliced ​​abuts against the two second clamping plates (772) and the second top clamping plate (773) at the same time. Two second synchronization blocks (774) are fixed on both sides of the second top clamping plate (773). The two second synchronization blocks (774) correspond to the two second clamping plates (772) one by one. The sides of the two second synchronization blocks (774) that are away from each other are inclined surfaces that are inclined downward from the second top clamping plate (773) to the side away from the second top clamping plate (773), and one end of the second clamping plate (772) abuts against one side of the corresponding second synchronization block (774) inclined surface. A second torsion spring is arranged between the second clamping plate (772) and the centering frame (761), and the second torsion spring always applies a force to the two second clamping plates (772) to move away from one end of the second synchronization block (774) from each other; A second electric telescopic rod (775) is disposed between the second tightening plate (773) and the docking frame (771); The top of the second clamping plate (773) and the ends of the two second clamping plates (772) away from the second synchronization block (774) are always on the same concentric circle, and the ends of the two second clamping plates (772) away from the second synchronization block (774) and the top of the second clamping plate (773) are fixed with a rotating shaft (776), and the outer side of the rotating shaft (776) is slidably connected to a roller frame (777) along its length direction, and a roller (778) is rotatably connected to the roller frame (777), and a hub motor is arranged inside the roller (778).

5. The casing-following anchor bolt construction structure according to claim 4 is characterized in that: A return spring (779) is sleeved on the outer side of the rotating shaft (776), and the return spring (779) gives the roller (778) a force to move away from the centering clamping assembly (76).

6. The casing follow-up anchor construction structure according to any one of claims 1 to 5, characterized in that: The rotary movement mechanism (8) comprises: A turning shaft (81) rotatably connected to the frame (5); A support block (82) is arranged between the turning shaft (81) and the bearing platform (6), and the support block (82) is fixedly connected to the turning shaft (81); An electric clamp (85) is disposed above the support platform (6), and is provided in plurality for clamping the sleeves (4) to be spliced; A self-locking rotating assembly (84) is arranged between the frame (5) and the workbench (2) and is used to drive the flip shaft (81) to rotate and lock the angle of the flip shaft (81) after rotation; The moving assembly (83) is arranged between the supporting block (82) and the bearing platform (6) and is used to drive the bearing platform (6) to move.

7. The casing-following anchor bolt construction structure according to claim 6 is characterized in that: The moving assembly (83) comprises: A support plate (831) is fixed to the support block (82); A slider (832) is fixedly mounted on the support plate (831); the support platform (6) is provided with a slide groove (61) along its length direction; and the slider (832) is slidably connected to the slide groove (61); A roller (833) is rotatably connected to the slider (832) and can be located in the slide groove (61) and roll; The limiting component (834) is arranged between the supporting plate (831) and the bearing platform (6) and is used to limit the movement boundary of the bearing platform (6).

8. The casing-following anchor bolt construction structure according to claim 7 is characterized in that: The limiting component (834) comprises two limiting groups respectively located on both sides of the support plate (831) in a direction of movement perpendicular to the bearing platform (6), and the two limiting groups are centrally symmetrical along the center of the bearing platform (6); Each of the limit groups comprises a first limit block (8341) fixedly mounted on the support plate (831) and a second limit block (8342) fixedly mounted on the support platform (6), and the first limit block (8341) and the second limit block (8342) are located on a side of the support plate (831) and the support platform (6) that are away from each other.

9. The casing-following anchor bolt construction structure according to claim 6, characterized in that: The self-locking rotating assembly (84) comprises: A worm gear (841) is fixedly sleeved on the turning shaft (81); A worm (842) is rotatably connected to the workbench (2) and meshes with the worm wheel (841); The driving motor (843) is arranged at one end of the worm (842).

10. A matching construction process for a casing-following anchor rod construction structure, characterized in that: The casing follow-up anchor construction structure is applicable to any one of claims 1 to 9, and the construction steps are as follows: S1. The excavator chassis (1) is moved below the position to be constructed, and the boom (11) and the workbench (2) are adjusted to the position to be constructed on the slope; S2, adjusting the angle between the drill rig (3) and the drill rod so that the drill rod is aligned with the target drilling position, then starting the drill rig (3), and the drill rod starts drilling. At the same time, the casing (4) follows the drill rod to protect the hole wall synchronously; S3. When the drilling depth does not reach the designed depth and the length of the drill rod and the casing (4) needs to be increased, the drilling rig (3) is controlled to disconnect the clamping of the drill rod that has been driven into the soil, and at the same time, the angle of the supporting platform (6) is adjusted through the rotating movement mechanism (8) so that the casing (4) to be spliced ​​on the supporting platform (6) is rotated to be consistent with the angle of the drill rod on the drilling rig (3); S4, using the self-aligning installation mechanism (7) to automatically adjust and align the casing (4) to be spliced ​​on the supporting platform (6), after alignment, rotating the casing (4) to be spliced ​​so that it is connected with the casing (4) already driven into the soil, and controlling the drilling rig (3) to rotate so that the new drill rod is threadedly connected with the drill rod already driven into the soil; S5, continue drilling the slope using the drilling machine (3), the drill rod, and the casing (4), until the drilling reaches the designed depth and then stops, at which time the casing (4) also reaches the predetermined depth; S6, then the drill rod is pulled out, and the anchor rod and the grouting pipe are inserted into the bottom of the casing (4) to perform grouting operation. During the grouting process, the grouting pipe and the casing (4) are pulled out while grouting until the hole is filled with cement slurry; S7. After the strength of the anchor body reaches 75% of the design strength, use tensioning equipment to prestress the anchor rod to ensure that the prestress meets the design requirements.

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