Single-pile progressive guide frame

Abstract

The utility model belongs to the technical field of pile foundation construction, and relates to a single-pile progressive guide frame. The guide frame comprises a limiting guide assembly, a pile sinking positioning assembly and a supporting frame connected between the limiting guide assembly and the pile sinking positioning assembly. The limiting and guiding assembly comprises two limiting frames which are vertically arranged in a spaced mode, at least three guiding wheel sets are arranged around the center of each limiting frame at equal-angle intervals, and all the guiding wheel sets on the two limiting frames are used for jointly clamping a steel pipe pile subjected to pile sinking; the pile sinking positioning assembly comprises two hoops which are vertically arranged in a spaced mode, the inner diameter of each hoop is matched with the outer diameter of the steel pipe pile to be subjected to pile sinking, and two anti-rotation grooves used for containing lock catches on the two sides of the steel pipe pile to be subjected to pile sinking are formed in the inner walls of the hoops in a concave mode. Through the arrangement of the limiting guide assembly and the pile sinking positioning assembly, the perpendicularity and the position of pile sinking in the pile testing stage can be accurately controlled, the pile sinking precision requirement in the pile testing operation is met, and the pile testing operation efficiency and the operation quality are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of pile foundation construction, and in particular relates to a single pile progressive guide frame. Background Art

[0002] At present, when constructing dredging engineering docks at some seaports, tide dike support structures are set up on the east and west sides of the dock respectively. The main lower structure of the dock adopts 1.2m diameter cast-in-place piles, and the front edge of the dock adopts 1.2m diameter steel pipe piles for vertical load-bearing and retaining main piles. Z-shaped double-jointed auxiliary piles, i.e. steel sheet piles, are set between the steel pipe piles. Figure 1 As shown, lock buckles 12 need to be welded on both sides of the steel pipe piles 11. During construction, multiple steel pipe piles 11 are first inserted at intervals, and then steel sheet piles 13 are driven between the steel pipe piles 11. The steel pipe piles 11 and the steel sheet piles 13 are connected by the lock buckles 12 on the steel pipe piles 11, thereby forming a tube-sheet composite pile structure 1.

[0003] In order to ensure the construction quality of the tube-sheet composite pile 1, verify the adaptability of its piling equipment, review the control standards of pile sinking, and test the bearing capacity of the pile foundation, a trial pile operation is carried out before the formal piling on site. The key to the trial pile stage is to drive the steel pipe pile 11 well, and the position and verticality of the pile sinking are very high. However, due to the influence of the on-site environment and complex geological conditions, it is difficult to control the position and verticality of the pile sinking during the trial pile stage, and it is difficult to meet the pile sinking accuracy requirements. In view of this, it is necessary to develop a guide positioning device for pile sinking to meet the requirements of the trial pile operation. Utility Model Content

[0004] In view of the shortcomings existing in the related technology, the utility model provides a single pile progressive guide frame, which aims to accurately control the position and verticality of the pile during the pile trial stage, so as to meet the pile driving accuracy requirements during the pile trial operation and improve the efficiency and quality of the pile trial operation.

[0005] The utility model provides a single pile progressive guide frame, comprising a limit guide assembly, a pile sinking positioning assembly and a support frame connected therebetween; wherein:

[0006] The limiting guide assembly includes two limiting frames spaced apart from each other and arranged in the center, each limiting frame is connected to the support frame; each limiting frame is provided with at least three guide wheel groups spaced apart at equal angles around its center, and all the guide wheel groups on the two limiting frames are used to clamp the steel pipe piles that have been sunk together;

[0007] The pile driving positioning assembly includes two hoops spaced apart and arranged centrally, each of which is connected to the support frame; the inner diameter of each hoop is adapted to the outer diameter of the steel pipe pile to be driven, and the inner wall of the hoop is recessed with two anti-rotation grooves for accommodating the lock buckles on both sides of the steel pipe pile to be driven.

[0008] In some of these embodiments, each clamping hoop includes a fixed hoop body and a movable hoop body which are arranged in an opposing manner. The fixed hoop body is connected to the support frame. One end of the movable hoop body is rotatably connected to the fixed hoop body, and the other end is connected to the fixed hoop body through a bolt assembly. Anti-rotation grooves are respectively recessed on the inner walls of the fixed hoop body and the movable hoop body.

[0009] In some of these embodiments, each guide wheel set includes a mounting seat and guide rollers. The mounting seat is connected to the limiting frame. The guide rollers are rotatably connected to one side of the mounting seat facing the center of the limiting frame, and the axial direction of the wheel axles of the guide rollers is perpendicular to the axial direction of the steel pipe pile that has been completed in pile driving. The wheel surfaces of the guide rollers of all the guide wheel sets are used to jointly clamp the steel pipe pile that has been completed in pile driving.

[0010] In some of these embodiments, each guide wheel set further includes a sliding frame and a fine-tuning screw. The sliding frame is slidably connected to the mounting seat in the direction towards the center of the limiting frame, and the guide rollers are rotatably connected to one end of the sliding frame facing the center of the limiting frame. One end of the fine-tuning screw is connected to the side of the sliding frame背离 the guide rollers, and the other end penetrates through the mounting seat and protrudes outside the mounting seat. The fine-tuning screw is threadedly connected to the mounting seat, and by rotating the fine-tuning screw, the sliding frame is driven to slide on the mounting seat to adjust the contact state between the wheel surface of the guide roller and the steel pipe pile that has been completed in pile driving.

[0011] In some of these embodiments, the wheel surface of the guide roller is made of rubber material.

[0012] In some of these embodiments, a rubber pad is attached to the inner wall of the clamping hoop, and the clamping hoop contacts the outer wall of the steel pipe pile to be driven through the rubber pad.

[0013] In some of these embodiments, the support frame includes a plurality of first support ribs arranged horizontally and a plurality of second support ribs arranged vertically. At least two first support ribs are respectively connected between the upper limiting frame and the clamping hoop and between the lower limiting frame and the clamping hoop. At least two second support ribs are respectively connected between the upper and lower limiting frames and between the upper and lower clamping hoops.

[0014] In some of these embodiments, the limiting and guiding assembly further includes a plurality of strengthening frames, and both ends of each strengthening frame are respectively connected to the upper and lower limiting frames.

[0015] In some of these embodiments, the limiting frame includes a top plate, a bottom plate, and side plates connected between the two, so that the cross-section of the limiting frame is in a U shape. A plurality of strengthening ribs are also connected between the top plate and the bottom plate.

[0016] In some of these embodiments, the clamping hoop includes a top wall, a bottom wall, and side walls connected between the two, so that the cross-section of the clamping hoop is in a U shape. A plurality of strengthening ribs are also connected between the top wall and the bottom wall.

[0017] Based on the above technical scheme, the single pile progressive guide frame in the embodiment of the utility model can accurately control the verticality and position of the pile during the pile trial stage through the setting of the limit guide component and the pile driving positioning component, so as to meet the pile driving accuracy requirements during the pile trial operation, thereby improving the efficiency and quality of the pile trial operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0019] Figure 1 It is a structural schematic diagram of the tube-sheet composite pile;

[0020] Figure 2 It is a three-dimensional diagram of a single pile progressive guide frame of the utility model;

[0021] Figure 3 It is a top view of the single pile progressive guide frame of the utility model when pile sinking is carried out;

[0022] Figure 4 This is a front view of the single pile progressive guide frame of the utility model;

[0023] Figure 5 for Figure 3 The enlarged view of point C in the figure;

[0024] Figure 6 for Figure 4 DD sectional view (showing only one guide wheel group);

[0025] Figure 7 for Figure 2 A in the enlarged view;

[0026] Figure 8 for Figure 2 Enlarged view of point B in .

[0027] In the figure:

[0028] 1. Tube-sheet combination pile; 11. Steel pipe pile; 12. Locking buckle; 13. Steel sheet pile; 2. Limiting guide assembly; 21. Limiting frame; 211. Top plate; 212. Bottom plate; 213. Side plate; 214. Strengthening rib; 22. Guide wheel assembly; 221. Mounting seat; 222. Guide roller; 2221. Wheel axle; 223. Slide; 224. Fine-tuning screw; 23. Strengthening frame; 3. Pile positioning assembly Parts; 31, clamp; 32, fixed hoop body; 33, movable hoop body; 34, rotating shaft; 35, bolt assembly; 36, anti-rotation groove; 311, top wall; 312, bottom wall; 313, side wall; 314, reinforcing rib; 4, supporting frame; 41, first supporting rib; 42, second supporting rib; 43, third supporting rib; 11_1; steel pipe piles that have been sunk; 11_2, steel pipe piles to be sunk. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] In the description of the present invention, it should be understood that the terms "center", "lateral", "longitudinal", "up", "down", "top", "bottom", "inside", "outside", "left", "right", "front", "back", "vertical", "horizontal", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0031] The terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first", "second", etc. may explicitly or implicitly include one or more of the features.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] refer to Figure 1-Figure 8 As shown, the utility model provides a single pile progressive guide frame, which is used to guide and position the steel pipe pile 11_2 to be sunk during the pile trial stage. The single pile progressive guide frame includes a limit guide component 2, a pile sinking positioning component 3 and a support frame 4 connected therebetween.

[0034] The limiting guide assembly 2 includes two limiting frames 21 which are spaced apart from each other and are centrally arranged, and each limiting frame 21 is connected to the supporting frame 4; it can be understood that the limiting frame 21 has a receiving cavity which passes through from top to bottom, and the shape of the through opening of the receiving cavity includes but is not limited to circular and square. At least three guide wheel groups 22 are arranged at equal angles around the center of each limiting frame 21, and all the guide wheel groups 22 on the two limiting frames 21 are used to jointly clamp the steel pipe piles 11_1 that have been completed; that is, the size of the receiving cavity on the limiting frame 21 is larger than the outer diameter of the steel pipe piles 11_1 that have been completed, and the guide wheel groups 22 are all convex toward the center of the limiting frame 21, and all the guide wheel groups 22 on the limiting frame 21 jointly form a clamping space for the steel pipe piles 11_1 that have been completed; specifically, the number of guide wheel groups 22 on each limiting frame 21 can be set to four, which are arranged at 90 degrees around the center of the limiting frame 21, and are opposite to each other. The distance between the guide wheel groups 22 is consistent with the outer diameter of the steel pipe pile 11_1 that has been completed by pile driving, so that all the guide wheel groups 22 on each limit frame 21 can contact the outer wall of the steel pipe pile 11_1 that has been completed by pile driving, so as to jointly clamp the steel pipe pile 11_1 that has been completed by pile driving; further, through the setting of the two limit frames 21 arranged in the upper and lower centers and the guide wheel groups 22 thereon, the limit guide assembly 2 in the guide frame can reliably hold the steel pipe pile 11_1 that has been completed by pile driving, so that the center line direction of the upper and lower limit frames 21 (that is, the height direction of the guide frame) can be strictly consistent with the axial direction of the steel pipe pile 11_1 that has been completed by pile driving.

[0035] The pile driving positioning assembly 3 includes two hoops 31 spaced apart from each other and arranged in the center, and each hoops 31 is connected to the support frame 4; it can be understood that the center line of the upper and lower hoops 31 is parallel to the center line of the upper and lower limit frames 21. The inner diameter of each hoop 31 is adapted to the outer diameter of the steel pipe pile 11_2 to be driven; it should be noted that the plane distance between the center of the hoop 31 and the center of the limit frame 21 is equal to the distance between the center of the steel pipe pile 11_1 that has been driven and the center of the steel pipe pile 11_2 to be driven. When the limiting guide assembly 2 clamps and holds the steel pipe pile 11_1 that has been sunk, the center line direction of the upper and lower limiting frames 21 and the center line direction of the upper and lower clamps 31 are strictly consistent with the axial direction of the steel pipe pile 11_1 that has been sunk, so that the steel pipe pile 11_1 that has been sunk is used as an auxiliary pile when sinking the steel pipe pile 11 to be sunk, so that the axial direction of the steel pipe pile 11 to be sunk is strictly consistent with the axial direction of the steel pipe pile 11_1 that has been sunk, and accurate control of the verticality of the steel pipe pile 11 to be sunk is quickly achieved. Furthermore, two anti-rotation grooves 36 are recessed on the inner wall of each clamp 31 for accommodating the lock buckles 12 on both sides of the steel pipe pile 11_2 to be sunk, and the shape and size of the anti-rotation grooves 36 are adapted to the lock buckles 12; through the arrangement of the two clamps 31 and the anti-rotation grooves 36 thereon, when the steel pipe pile 11_2 to be sunk is inserted into the pile sinking positioning assembly 3 of the guide frame, the center position of the steel pipe pile 11_2 to be sunk and the orientation of the lock buckles 12 to be sunk can be quickly and accurately controlled, and the steel pipe pile 11_2 to be sunk can be prevented from rotating itself during piling.

[0036] The above-mentioned illustrative embodiment, through the arrangement of the limit guide component 2 and the pile driving positioning component 3, can quickly and accurately control the verticality and position of the pile during the pile trial stage, solves the existing problem of controlling the position and verticality of the pile, improves the accuracy of pile driving and prevents the pile body from rotating, meets the pile driving accuracy requirements during the pile trial operation and ensures smooth pile driving, thereby improving the efficiency and quality of the pile trial operation.

[0037] refer to Figure 1-Figure 3 As shown, in some embodiments, each hoop 31 includes a fixed hoop body 32 and a movable hoop body 33 arranged in a matched manner. The fixed hoop body 32 is connected to the support frame 4; one end of the movable hoop body 33 is rotatably connected to the fixed hoop body 32 through a rotating shaft 34, and the other end is connected to the fixed hoop body 32 through a bolt assembly 35. An anti-rotation groove 36 is respectively recessed on the inner wall of the fixed hoop body 32 and the inner wall of the movable hoop body 33. This illustrative embodiment realizes the openable and closable connection of the hoop 31 by setting the fixed hoop body 32 and the movable hoop body 33; when the steel pipe pile 11_2 to be sunk is inserted into the hoop 31, it is convenient to adjust the contact state between the hoop 31 and the steel pipe pile 11_2 to be sunk, thereby ensuring that the hoop 31 and the steel pipe pile 11_2 to be sunk are always reliably crimped during the pile sinking process.

[0038] refer to Figure 1-Figure 6 As shown, in some embodiments, each guide wheel group 22 includes a mounting seat 221 and a guide roller 222. The mounting seat 221 is connected to the limiting frame 21; the guide roller 222 is rotatably connected to the side of the mounting seat 221 facing the center of the limiting frame 21, and the direction of the wheel axle 2221 of the guide roller 222 is perpendicular to the axial direction of the steel pipe pile 11_1 that has been driven. The wheel surfaces of the guide rollers 222 of all the guide wheel groups 22 are used to clamp the steel pipe pile 11_1 that has been driven. Further explanation, because the guide roller 222 can rotate around its wheel axle 2221, under the rotation and guiding action of all the guide rollers 222, the guide frame can be easily and smoothly installed on the steel pipe pile 11_1 that has been driven, thereby improving the working efficiency.

[0039] refer to Figure 1-Figure 6 As shown, in some embodiments, each guide wheel group 22 further includes a slide 223 and a fine-tuning screw 224. The slide 223 is slidably connected to the mounting seat 221 in a direction toward the center of the limiting frame 21, and the guide roller 222 is rotatably connected to one end of the slide 223 facing the center of the limiting frame 21. One end of the fine-tuning screw 224 is connected to a side of the slide 223 away from the guide roller 222, and the other end passes through the mounting seat 221 and protrudes out of the mounting seat 221; the fine-tuning screw 224 is threadedly connected to the mounting seat 221. When the guide frame is installed on the steel pipe pile 11_1 that has been driven, the slide 223 is driven to slide on the mounting seat 221 by rotating the fine-tuning screw 224, thereby driving the guide roller 222 to move, so as to finely adjust the contact state between the wheel surface of the guide roller 222 and the steel pipe pile 11_1 that has been driven, thereby enabling the guide frame to have a fine-tuning function, thereby further improving the verticality and position accuracy of the steel pipe pile 11 to be driven.

[0040] In some embodiments, the wheel surface of the guide roller 222 is made of rubber material to avoid causing damage or destruction to the anti-corrosion coating of the steel pipe pile 11_1 that has been sunk.

[0041] In some embodiments, a rubber pad is attached to the inner wall of the clamp 31, and the clamp 31 contacts the outer wall of the steel pipe pile 11_2 to be sunk through the rubber pad to avoid damage or destruction to the anti-corrosion coating of the steel pipe pile 11_2 to be sunk during the sinking process.

[0042] refer to Figure 2-Figure 4As shown, in some embodiments, the support frame 4 includes a plurality of first support ribs 41 arranged horizontally and a plurality of second support ribs 42 arranged vertically. At least two first support ribs 41 are respectively connected between the upper limiting frame 21 and the hoop 31 and between the lower limiting frame 21 and the hoop 31. At least two second support ribs 42 are respectively connected between the upper and lower limiting frames 21 and between the upper and lower hoops 31. The support frame 4 includes a plurality of third support ribs 43 arranged obliquely, and the third support ribs 43 are connected between two adjacent first support ribs 41 on the same side. Thus, through the arrangement of the first support ribs 41, the second support ribs 42 and the third support ribs 43, the overall structural strength of the guide frame is improved, ensuring its structural stability and use reliability.

[0043] Reference Figure 2 、 Figure 4 As shown, in some embodiments, the limit guiding assembly 2 further includes a plurality of reinforcing frames 23, and both ends of each reinforcing frame 23 are respectively connected to the upper and lower limiting frames 21, thereby enhancing the overall structural strength of the limit guiding assembly 2.

[0044] Reference Figure 7 As shown, in some embodiments, the limiting frame 21 includes a top plate 211, a bottom plate 212 and side plates 213 connected between the two, so that the cross-section of the limiting frame 21 is in a U shape; a plurality of reinforcing ribs 214 are further connected between the top plate 211 and the bottom plate 212, thereby enhancing the structural strength of the limiting frame 21 itself.

[0045] Reference Figure 8 As shown, in some embodiments, the hoop 31 includes a top wall 311, a bottom wall 312 and side walls 313 connected between the two, so that the cross-section of the hoop 31 is in a U shape; a plurality of reinforcing ribs 314 are further connected between the top wall 311 and the bottom wall 312, thereby enhancing the structural strength of the hoop 31 itself.

[0046] Combined with Figure 1-Figure 8 As shown, the main steps of driving a test pile using the single-pile progressive guide frame of the present utility model during the test pile driving stage are briefly described as follows:

[0047] 1) First, drive a steel pipe pile 11 using devices such as a GPS device and a total station. During the driving process, observe the deviation and verticality of the pile body to ensure that the completed steel pipe pile 11_1 is accurately positioned and has qualified verticality; weld a corbel or set a clamp at the preset height position of the completed steel pipe pile 11_1.

[0048] 2) Then, the guide frame is installed on the steel pipe pile 11_1 that has been completed; specifically, the center of the limit frame 21 is aligned with the center of the steel pipe pile 11_1 that has been completed, and then the guide frame is lowered, and the lower guide wheel group 22 and the upper guide wheel group 22 in the limit guide assembly 2 sequentially contact the outer wall of the steel pipe pile 11_1 that has been completed, so as to realize the progressive limit guide between the guide frame and the steel pipe pile 11_1 that has been completed, until the limit frame 21 at the bottom of the guide frame is pressed on the welded bracket or clamp of the steel pipe pile 11_1 that has been completed; at this time, the contact state between the wheel surface of each guide roller 222 and the steel pipe pile 11_1 that has been completed is finely adjusted by the fine-tuning screw 224 to ensure that the crimping state is consistent and to ensure that the guide frame reliably holds the steel pipe pile 11_1 that has been completed;

[0049] 3) Next, the steel pipe pile 11_2 to be sunk is hoisted above the guide frame, and after the center of the steel pipe pile 11_2 to be sunk is aligned with the center of the hoop 31 and the lock buckle 12 is aligned with the anti-rotation groove 36, the steel pipe pile 11_2 to be sunk is lowered; the steel pipe pile 11_2 to be sunk passes through the upper hoop 31 and the lower hoop 31 in the pile positioning assembly 3 in sequence, so as to realize the progressive positioning and orientation between the steel pipe pile 11_2 to be sunk and the guide frame; at this time, the contact state between the hoop 31 and the steel pipe pile 11_2 to be sunk is adjusted by the bolt assembly 35 to ensure that the hoop 31 and the steel pipe pile 11_2 to be sunk are reliably crimped;

[0050] 4) Finally, the steel pipe pile 11_2 to be sunk is driven until it is inserted and driven into place, and the sinking operation of the steel pipe pile 11_2 to be sunk in the pile trial stage is completed; the guide frame is hoisted off the steel pipe pile 11_1 that has been sunk.

[0051] To sum up, the single pile progressive guide frame of the utility model can quickly and accurately control the verticality and position of the pile during the pile test stage, solves the existing control problems of the pile position and verticality, improves the pile driving accuracy and prevents the pile body from rotating, meets the pile driving accuracy requirements during the pile test operation and ensures smooth pile driving, thereby improving the efficiency and quality of the pile test operation.

[0052] Finally, it should be noted that: the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0053] The above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the utility model can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the utility model, which should be included in the scope of the technical solution for which protection is requested in the utility model.

Claims

1. A single pile progressive guide frame, characterized in that: It includes a limit guiding component, a pile sinking positioning component, and a support frame connected between the two; among them, the limit guiding component includes two limit frames arranged at intervals up and down and centered, and each limit frame is connected to the support frame; at least three guiding wheel groups are arranged at equal angular intervals around the center of each limit frame, and all the guiding wheel groups on the two limit frames are used to jointly clamp the steel pipe pile that has been sunk; the pile sinking positioning component includes two hoops arranged at intervals up and down and centered, and each hoop is connected to the support frame; the inner diameter of each hoop is adapted to the outer diameter of the steel pipe pile to be sunk, and two anti-rotation grooves for accommodating the side locks of the steel pipe pile to be sunk are recessed on the inner wall of the hoop.

2. The single pile progressive guide frame according to claim 1, characterized in that: Each hoop includes a fixed hoop body and a movable hoop body arranged in a butted manner. The fixed hoop body is connected to the support frame. One end of the movable hoop body is rotatably connected to the fixed hoop body, and the other end is connected to the fixed hoop body through a bolt assembly; one of the anti-rotation grooves is recessed on the inner walls of the fixed hoop body and the movable hoop body respectively.

3. The single pile progressive guide frame according to claim 1, characterized in that: Each guiding wheel group includes a mounting seat and a guiding roller; the mounting seat is connected to the limit frame; the guiding roller is rotatably connected to one side of the mounting seat facing the center of the limit frame, and the axial direction of the wheel shaft of the guiding roller is perpendicular to the axial direction of the steel pipe pile that has been sunk; the wheel surfaces of all the guiding rollers of the guiding wheel groups are used to jointly clamp the steel pipe pile that has been sunk.

4. The single pile progressive guide frame according to claim 3, characterized in that: Each guiding wheel group further includes a sliding frame and a fine-tuning screw; the sliding frame is slidably connected to the mounting seat in the direction towards the center of the limit frame, and the guiding roller is rotatably connected to one end of the sliding frame facing the center of the limit frame; one end of the fine-tuning screw is connected to the side of the sliding frame背离 the guiding roller, and the other end penetrates through the mounting seat and protrudes outside the mounting seat; the fine-tuning screw is threadedly connected to the mounting seat, and by rotating the fine-tuning screw, the sliding frame is driven to slide on the mounting seat to adjust the contact state between the wheel surface of the guiding roller and the steel pipe pile that has been sunk.

5. The single pile progressive guide frame according to claim 3 or 4, characterized in that: The wheel surface of the guiding roller is made of rubber.

6. The single pile progressive guide frame according to claim 1, characterized in that: A rubber pad is pasted on the inner wall of the hoop, and the hoop contacts the outer wall of the steel pipe pile to be sunk through the rubber pad.

7. The single pile progressive guide frame according to claim 1, characterized in that: The support frame includes a plurality of first support ribs arranged horizontally and a plurality of second support ribs arranged vertically; At least two of the first support ribs are respectively connected between the upper limit frame and the hoop and between the lower limit frame and the hoop; at least two of the second support ribs are respectively connected between the upper and lower limit frames and between the upper and lower hoops.

8. The single pile progressive guide frame according to claim 1, characterized in that: The limit guiding component further includes a plurality of strengthening frames, and both ends of each strengthening frame are respectively connected to the upper and lower limit frames.

9. The single pile progressive guide frame according to claim 1, characterized in that: The limit frame includes a top plate, a bottom plate, and side plates connected between the two, so that the cross section of the limit frame is in a U shape; a plurality of strengthening ribs are also connected between the top plate and the bottom plate.

10. The single pile progressive guide frame according to claim 1, characterized in that: The hoop includes a top wall, a bottom wall, and side walls connected between the two, so that the cross section of the hoop is in a U shape; a plurality of strengthening ribs are also connected between the top wall and the bottom wall.

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