Adjustable guide limiter for planting socketed pile

Abstract

The utility model discloses an adjustable guide limiting stopper for planting a socketed pile. The adjustable guide limiting stopper is composed of N limiting assemblies and N anchor chain assemblies. The limiting assembly comprises a foundation ring capable of being oppositely opened, the multiple adjusting devices are evenly distributed on the annular outer wall of the foundation ring in the circumferential direction of the foundation ring in a radial shape, and the multiple inner sliding assemblies are evenly distributed in multiple inner sliding assembly mounting grooves in the annular inner wall of the foundation ring. The outer sliding assemblies are fixed to the outer side ends of the adjusting devices correspondingly, and the distances between the outer sliding assemblies and the foundation ring are adjusted through the adjusting devices. The N limiting assemblies are coaxially arranged at intervals from top to bottom, and the N anchor chain assemblies are arranged above the limiting assemblies correspondingly so as to connect the adjacent limiting assemblies or the limiting assemblies and a crane lifting hook. The guide limiting stopper is suitable for the adjusting requirement of different deviation conditions of the pile casing and the designed pile position of the engineering pile, precision control over the perpendicularity and the plane position of the engineering pile is achieved, the construction time and cost are saved, and the construction efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to rock -embedded pile construction technical field especially relates to a rock -embedded pile is planted with adjustable guide stopper. BACKGROUND

[0002] With the development of society in our country, the development of wharf, cross-sea bridge, offshore drilling platform, offshore wind power, more and more pile foundation construction are connected to deep water, deep sea area, but the geological conditions of this kind of sea area are often more complex, there is relatively thin cover layer, bedrock exposed condition.In the geological condition of thin cover layer, bedrock slope, in order to solve the problem of tensile, bending and bearing load of foundation in structure, precast rock -embedded pile and other rock -embedded pile pile type are more and more developed and used.Precast rock -embedded pile is mostly involved in planting pile down process, and the verticality and plane position control requirements of pile position are high, especially the three piles, four piles, multi-pile guide pipe support foundation form of upper part needing to place guide pipe support, the verticality and plane position of relative position of rock -embedded pile under the same foundation are higher.In the process of engineering pile down, grouting and pouring in the traditional construction process, the verticality and pile position will appear different degrees of deviation, which affects the construction quality. CONTENT OF THE UTILITY MODEL

[0003] The utility model aims at providing a rock -embedded pile is planted with adjustable guide stopper that solves the verticality difference and plane deviation in the process of planting pile down and grouting of prior art.

[0004] Therefore, the utility model technical scheme is as follows:

[0005] A rock -embedded pile is planted with adjustable guide stopper, which is composed of N limit components and N sets of anchor chain components;

[0006] Each limit component includes a plurality of adjusting devices, a plurality of inner sliding components and a plurality of outer sliding components arranged on a base ring;The base ring is a horizontally arranged circular ring body, which is formed by two arc-shaped half-ring bodies being closed and connected;A plurality of adjusting devices are evenly distributed in the radial direction along the circumference of the base ring, each adjusting device includes a jack, which is arranged with the piston end outward and is fixed on the annular outer wall of the base ring through the oil cylinder end;A plurality of inner sliding components are arranged in a plurality of inner sliding component mounting grooves arranged on the annular inner wall of the base ring, respectively, each inner sliding component includes an inner roller capable of rotating along the axis of the base ring, and the inner roller is arranged in a manner that partially protrudes to the outer side of the inner sliding component mounting groove, so as to be able to roll with the outer wall of the engineering pile;A plurality of outer sliding components are fixed one by one on the piston end face of the jack of a plurality of adjusting devices, respectively, each outer sliding component includes an outer roller capable of rotating along the axis of the base ring, and the outer roller can roll with the inner wall of the casing;

[0007] N sets of limiting assemblies are coaxially and spacedly arranged from top to bottom, and N sets of anchor chain assemblies are arranged above each limiting assembly; each set of anchor chain assembly is composed of a plurality of connecting anchor chains which are uniformly arranged along the circumferential direction of the limiting assembly, the bottom end of each connecting anchor chain is connected to the top surface of the base ring of the lower limiting assembly, and the top end is connected to the bottom surface of the base ring of the upper limiting assembly or a hook.

[0008] Further, the two arc-shaped half-ring bodies are connected through plug-in connectors arranged at their two ends; the plug-in connector includes a plug block arranged at one end of the arc-shaped half-ring body and a plug slot arranged at the other end of the arc-shaped half-ring body, and the plug block and the plug slot are matched, so that the adjacent ends of the two arc-shaped half-ring bodies are connected through the matched plug block and plug slot to form a plug-in connection; a plurality of one-to-one corresponding through holes are uniformly arranged on the two side walls of the plug block and the plug slot, so that the plug block and the plug slot of the plug-in connection are detachably connected and fixed through a plurality of fixed pins respectively penetrating through the four sets of through holes.

[0009] Further, the inner diameter of the base ring is greater than the hole diameter of the pile hole of the engineering pile.

[0010] Further, the outer sliding assembly further comprises an outer roller shaft rod and an outer roller mounting seat; the outer roller mounting seat is a U-shaped mounting seat composed of a bottom plate and two side plates symmetrically fixed on one side surface of the bottom plate, through holes are symmetrically arranged on the two side plates, and the other side surface of the bottom plate is fixed on the end surface of the piston end of the jack; the outer roller is a roller structure, a central axial through hole is arranged on the outer roller, the outer roller is rotatably sleeved on the outer side of the outer roller shaft rod, and the two ends of the outer roller shaft rod are penetratingly arranged in the two outer roller shaft holes of the outer roller mounting seat.

[0011] Further, the outer roller adopts an outer convex roller with an outer diameter gradually decreasing from the middle part to the two ends, and the curvature of the outer wall of the outer roller in the axial direction is adapted to the curvature of the inner wall of the protection cylinder, so that the outer roller can reciprocally roll along the axial direction of the protection cylinder in a manner of abutting the inner wall of the protection cylinder.

[0012] Further, the inner sliding assembly further comprises an inner roller shaft rod; the inner roller is a roller structure, a central axial through hole is arranged on the inner roller, the inner roller is rotatably sleeved on the outer side of the inner roller shaft rod, and the two ends of the outer side of the inner roller shaft rod are fixed on the opposite side walls in the horizontal direction in the inner sliding assembly mounting groove.

[0013] Further, the inner roller adopts an inner concave roller with an outer diameter gradually increasing from the middle part to the two ends, and the curvature of the outer wall of the inner roller in the axial direction is adapted to the curvature of the outer wall of the engineering pile, so that the inner roller can reciprocally roll along the axial direction of the engineering pile in a manner of abutting the outer wall of the engineering pile.

[0014] Further, the interval distance of the adjacent two limiting assemblies in the axial direction is 15cm-25cm.

[0015] Further, a plurality of connecting lugs are arranged on the top surface and the bottom surface of the base ring of each limiting component in the circumferential direction, and the number of the connecting lugs is consistent with the number of the connecting anchor chains in each set of anchor chain components; the two ends of each connecting anchor chain are provided with shackles, so that the end of each connecting anchor chain is detachably connected with the connecting lug through the shackles.

[0016] Compared with the prior art, the adjustable guiding limiter for rock-socketed pile planting solves the problems of poor verticality and plane deviation in the planting and grouting processes of the prior art, the plurality of limiting components arranged in the axial direction from top to bottom and connected through the anchor chain components can be suitable for the adjustment requirements of different deviation conditions of the pile position of the pile sleeve and the engineering pile, the precision control of the engineering pile in the verticality and the plane position is realized, the construction time and cost are saved, and the construction efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 FIG. 1 is a structural schematic view of a limiting component of an adjustable guiding limiter for rock-socketed pile planting in an embodiment of the present utility model;

[0018] Figure 2 FIG. 2 is a structural schematic view of a connecting part of a limiting component and a connecting anchor chain of an adjustable guiding limiter for rock-socketed pile planting in an embodiment of the present utility model;

[0019] Figure 3 FIG. 3 is a split structure schematic view of a base ring of an adjustable guiding limiter for rock-socketed pile planting in an embodiment of the present utility model;

[0020] Figure 4 FIG. 4 is a structural schematic view of an adjusting device of an adjustable guiding limiter for rock-socketed pile planting in an embodiment of the present utility model, and an outer sliding component is connected to the adjusting device;

[0021] Figure 5 FIG. 5 is a structural schematic view of an adjustable guiding limiter for rock-socketed pile planting in an embodiment of the present utility model. DETAILED DESCRIPTION

[0022] The present utility model will be further described below in combination with the drawings and specific embodiments, but the following embodiments are by no means any limitation on the present utility model.

[0023] Referring to Figure 5 The adjustable guiding limiter for rock-socketed pile planting is composed of two limiting components and two sets of anchor chain components.

[0024] Referring to Figure 1 Each limiting component includes four adjusting devices, four inner sliding components 7 and four outer sliding components 6 arranged on a base ring 1.

[0025] Referring to Figure 3, the base ring 1 is a horizontally arranged circular ring body formed by the left and right arc-shaped half ring bodies 101 and 102 being connected together; the inner diameter of the base ring 1 is slightly larger than the hole diameter of the pile hole of the engineering pile, so that the base ring 1 can be sleeved outside the engineering pile in the actual pile planting construction.

[0026] The left and right arc-shaped half ring bodies 101 and 102 are connected through the plug-in connectors 2 arranged at the two ends thereof; specifically, one end of each arc-shaped half ring body is provided with a plug 201, and the other end is provided with a slot 202 matched with the plug, so that the adjacent ends of the two arc-shaped half ring bodies are connected through the plug-in connection of the matched plugs 201 and slots 202; four through holes corresponding to the four groups of through holes are uniformly arranged on the two side walls of the plug 201 and the slot 202, respectively, so that the plug-in connected plug 201 and slot 202 are detachably connected and fixed through the four fixing pins 3 respectively penetrating the four groups of through holes; preferably, the two side walls of the slot 202 are arranged on the top surface of the base ring 1.

[0027] Referring to Figure 1 , the four adjusting devices are uniformly arranged along the circumferential direction of the base ring 1 in a radial manner; specifically, referring to Figure 4 , the adjusting device comprises a jack 5, the oil cylinder end of which is fixed perpendicularly on the annular outer wall of the base ring 1 through a connecting plate 4, so that the piston end thereof is arranged towards the outside; in this embodiment, the oil cylinder of the jack 5 is fixed perpendicularly on one side surface of the connecting plate 4 in a welded manner, and the other side surface of the connecting plate 4 is fixed on the base ring 1 in a welded manner.

[0028] Referring to Figure 1 , the four outer sliding assemblies 6 are respectively and correspondingly fixed on one side of the piston end of the jack of the four adjusting devices, so that the outer sliding assembly 6 is driven to move in the radial direction of the base ring 1 by the jack 5 of the adjusting device, so as to adjust the distance between the outer sliding assembly 6 and the base ring 1.

[0029] Referring to Figure 4 , the outer sliding assembly 6 comprises an outer roller mounting seat 603 and an outer roller 604; the outer roller mounting seat 603 is a U-shaped mounting seat composed of a bottom plate and two side plates fixed symmetrically on one side surface of the bottom plate, and the two side plates are symmetrically provided with through outer roller shaft holes 601; the outer roller 604 is a roller structure, and a central axial through hole is formed in the outer roller 604; an outer roller shaft 602 is rotatably arranged in the central axial through hole of the outer roller 604, and the two ends of the outer roller shaft 602 are arranged in and fixed in the two outer roller shaft holes 601 symmetrically arranged on the outer roller mounting seat 603, so that the outer roller 604 can rotate freely on the outer roller mounting seat 603; the outer roller mounting seat 603 of each outer sliding assembly 6 is welded to the piston end surface of the jack 5 through the bottom plate thereof, and the outer roller 604 thereon is arranged on the outer roller mounting seat 603 in a horizontal arrangement manner with its axis direction.

[0030] In the embodiment, the outer roller 604 preferably adopts an outer convex roller with an outer diameter gradually decreasing from the middle part to the two ends, and the curvature of the outer wall of the outer roller 604 in the axial direction is adapted to the curvature of the inner wall of the sleeve, so that the outer roller 604 can roll in close contact with the inner wall of the sleeve.

[0031] In actual rock-socketed pile construction, the center point of the actual lowering position of the sleeve and the center point of the designed pile position may have a planar deviation, and therefore, the deviation problem can be overcome by matching the adjusting device and the outer sliding assembly. Specifically, when the limiting assembly is sleeved outside the engineering pile through the base ring 1, the extension length of the jack arranged in the adjusting device in the circumferential direction of the base ring 1 is adjusted according to the deviation between the sleeve and the designed pile position. Since the extension lengths of the jacks are different, when the base ring 1 is sleeved in the sleeve and the base ring 1 abuts against the inner wall of the sleeve through the outer sliding assemblies, the center point of the base ring 1 is coincided with the center point of the designed pile position, so that the base ring 1 realizes the guiding and positioning of the subsequent lowering engineering pile, and ensures that the engineering pile inserted in the base ring 1 is lowered to the designed pile position along with the base ring 1. The outer sliding assemblies are in sliding contact with the inner wall of the sleeve, so as to ensure the smooth lowering of the guiding and limiting device and the engineering pile.

[0032] Referring to Figure 1 , the four inner sliding assemblies 7 are arranged in the circumferential direction of the base ring 1 and are respectively and one-to-one installed in the four inner sliding assembly installation grooves 702 formed in the annular inner wall of the base ring 1. In the embodiment, the four inner sliding assembly installation grooves are composed of two inner sliding assembly installation grooves formed in the arc-shaped inner walls of the left arc-shaped half ring body 101 and the right arc-shaped half ring body 102, respectively, and the two inner sliding assembly installation grooves on each arc-shaped half ring body are symmetrically formed to ensure the balance of the arc-shaped half ring body in the structural design.

[0033] Specifically, each inner sliding assembly 7 comprises an inner roller 704, the size of which is adapted to the size of the inner sliding assembly installation groove 702; a central axial through hole is formed in the inner roller 704, and an inner roller shaft 701 is arranged in the central axial through hole, so that the inner roller 704 can freely rotate relative to the inner roller shaft 701; the two ends of the inner roller shaft 701 are fixed to the groove wall of the inner sliding assembly installation groove 702, and the inner roller 704 partially protrudes to the outside of the inner sliding assembly installation groove 702, and the distances from the four inner rollers 704 to the center point of the base ring 1 are the same, so as to ensure that the limiting assembly is in contact with the outer wall of the engineering pile through the four inner rollers 704.

[0034] In the embodiment, the inner roller 704 preferably adopts a concave roller with an outer diameter gradually increasing from the middle to the two ends, and the curvature of the outer wall of the inner roller 704 in the axial direction is adapted to the curvature of the outer wall of the engineering pile, so that the outer wall of the inner roller 704 can be rolled in close contact with the outer wall of the engineering pile, preventing bumping on the outer side of the pile, thereby avoiding the relative movement between the guide limiter and the engineering pile, and the sliding friction between them, ensuring that they do not interfere with each other when moving relative to each other.

[0035] In the embodiment, the two limiting assemblies are arranged in an upper and lower spaced manner, and the spacing distance between the two is 25 cm.

[0036] Referring to Figure 2 , two sets of anchor chain assemblies are arranged above the two limiting assemblies as connecting assemblies; specifically, each set of anchor chain assembly is composed of four connecting anchor chains 9; correspondingly, four connecting lugs 8 are arranged on the top surface and the bottom surface of the base ring 1 of each limiting assembly in the circumferential direction; the two ends of each connecting anchor chain 9 are provided with a shackle 10, so that the end of each connecting anchor chain 9 is detachably connected with the connecting lug 8 through the shackle 10; in the embodiment, the connecting lug 8 is an outward convex semicircular ring to cooperate with the shackle 10.

[0037] In the anchor chain assembly between the two limiting assemblies, the four connecting anchor chains 9 are arranged vertically and uniformly along the circumferential direction of the two base rings 1, the top ends of the four are connected to the four connecting lugs 8 on the bottom surface of the upper base ring 1 through the shackles 10 arranged at the ends, and the bottom ends of the four are connected to the four connecting lugs 8 on the top surface of the lower base ring 1 through the shackles 10 arranged at the ends; in the anchor chain assembly above the upper limiting assembly, the four connecting anchor chains 9 are arranged uniformly along the circumferential direction of the base ring 1, the top ends of the four are connected to the hooks of the crane through the shackles 10 arranged at the ends, and the bottom ends of the four are connected to the four connecting lugs 8 on the top surface of the base ring 1 through the shackles 10 arranged at the ends, and then the rock-embedded pile planting adjustable guide limiter is lowered by the crane, so that it is lowered into the rock-embedded drill hole synchronously with the engineering pile.

[0038] Referring to Figure 5 , the specific steps of the rock-embedded pile planting process using the rock-embedded pile planting adjustable guide limiter of the embodiment are described as follows:

[0039] S1, erecting a working platform;

[0040] S2, measuring and placing the pile position;

[0041] S3, lowering the protection cylinder, the diameter of the protection cylinder is greater than the diameter of the engineering pile by 60 cm;

[0042] In this step, there is a planar deviation between the center point of the protection cylinder and the designed pile position;

[0043] S4, rock-socketed drilling;

[0044] In this step, the hole diameter of the rock-socketed drilling is preferably 30 cm larger than the diameter of the engineering pile. In particular, the rock-socketed pile foundation of the multi-pile jacket is adopted, the drilling centers of the multi-piles are simultaneously released, and the relative position of the drilling centers is ensured to be accurately laid out. The drilling machine is selected appropriately during the drilling, and the drilling mud wall protection is matched to control the drilling perpendicularity. During the drilling process, the drilling depth is calculated according to the design final hole elevation and the platform top elevation, and the drilling depth is controlled by controlling the length of the drilling rod. Before the final hole, the drilling depth is marked on the drilling rod by back calculation, and when the drilling rod mark is left for 50 cm from the predetermined position, the drilling is carried out at a low speed and a low footage until the design elevation.

[0045] S5, hole cleaning, air-lift reverse circulation hole cleaning is adopted, and immediately after the hole cleaning is completed, the engineering pile is implanted;

[0046] S6, pile implantation;

[0047] In this step, the specific implementation steps of the pile implantation are as follows: before the pile implantation, the number of groups of the guide limiters is determined according to the pile length, the assembly of the guide limiters is completed on site at an interval of 15 m to 20 m between adjacent guide limiting assemblies, when the engineering pile is lowered to 1 m from the working platform, the guide limiter is sleeved outside the engineering pile, and according to the deviation of the actual lowering position of the casing from the design pile position in the circumferential direction, the stroke of each jack is adjusted to correct the planar deviation generated during the lowering of the casing by using the guide limiter, so as to ensure that the engineering pile is lowered to the design pile position; then, the engineering pile and the guide limiter are simultaneously lifted, and with the lowering of the engineering pile, until the engineering pile is lowered to the design elevation.

[0048] S7, grouting: the grouting operation can be continuously carried out, the grouting is temporarily stopped when the grouting reaches the bottom of the casing, and after the grouting strength is increased, the backfilling operation in the engineering pile is carried out, the bagged sand or drilling slag is filled in the engineering pile through the guide pipe to the design elevation, and after the grouting is completed, the sand filling, top extrusion grouting and secondary grouting around the pile are carried out.

[0049] S8, removal and recovery of the guide limiter: after the grouting operation is completed and the grouting material has a certain strength, the guide limiter is integrally lifted, the uppermost limiter is pulled out to 1 m above the working platform, the pins in the ring plates of this layer of limiters are pulled out, the limiters are divided into left and right semicircular ring plates again, the lower limiters are sequentially removed in this way, and finally the left and right semicircular ring plates are placed on the working platform, so that the stroke of the jack is adjusted again according to the planar position of the casing of the next pile position for the construction of the engineering pile of the next pile position.

Claims

1. An adjustable guide limiter for rock-socketed pile driving, characterized in that, The application relates to a pile supporting device which is composed of N limiting assemblies and N sets of anchor chain assemblies; wherein each limiting assembly comprises multiple adjusting devices, multiple inner sliding assemblies (7) and multiple outer sliding assemblies (6) arranged on a base ring (1); the base ring (1) is a horizontally arranged circular ring body which is formed by the jointing of two arc-shaped half ring bodies; the multiple adjusting devices are arranged along the circumferential direction of the base ring (1) in a radial manner, each adjusting device comprises a jack (5) which is arranged in a way that the piston end faces outward and is fixed on the annular outer wall of the base ring (1) through the oil cylinder end; the multiple inner sliding assemblies (7) are arranged in the multiple inner sliding assembly installation grooves (702) which are arranged on the annular inner wall of the base ring (1) in a distributed manner, each inner sliding assembly (7) comprises an inner roller (704) which can rotate along the axis direction of the base ring (1), and the inner roller (704) is arranged in a way that it partially protrudes to the outside of the inner sliding assembly installation groove (702) so as to be able to roll in close contact with the outer wall of the engineering pile; the multiple outer sliding assemblies (6) are fixed on the piston end face of the jack of the multiple adjusting devices in a one-to-one corresponding manner, each outer sliding assembly (6) comprises an outer roller (604) which can rotate along the axis direction of the base ring (1), and the outer roller (604) can roll in close contact with the inner wall of the casing; the N limiting assemblies are coaxially and spacedly arranged from top to bottom, and the N sets of anchor chain assemblies are arranged above the limiting assemblies; each set of anchor chain assembly is composed of multiple connecting anchor chains (9) which are arranged along the circumferential direction of the limiting assembly in a distributed manner, the bottom end of each connecting anchor chain (9) is connected to the top surface of the base ring (1) of the lower limiting assembly, and the top end is connected to the bottom surface of the base ring (1) of the upper limiting assembly or a hook.

2. The adjustable guide limiter for rock-socketed pile driving according to claim 1, characterized in that, The two arc-shaped half ring bodies are connected through the plug-in connectors (2) arranged at the two ends; the plug-in connector (2) comprises a plug block (201) arranged at one end of the arc-shaped half ring body and a plug groove (202) arranged at the other end of the arc-shaped half ring body, and the plug block and the plug groove (202) are matched, so that the adjacent ends of the two arc-shaped half ring bodies are connected through plug-in connection formed by the plug block (201) and the plug groove (202); multiple through holes which are one-to-one corresponding are arranged on the two side groove walls of the plug block (201) and the plug groove (202) in a distributed manner, so that the plug block (201) and the plug groove (202) of the plug-in connection are detachably connected and fixed through the multiple fixed pins (3) which are respectively arranged in the four groups of through holes.

3. The adjustable guide limiter for rock-socketed pile driving according to claim 1, characterized in that, The inner diameter of the base ring (1) is larger than the hole diameter of the pile hole of the engineering pile.

4. The adjustable guide limiter for rock-socketed pile driving according to claim 1, wherein, The outer sliding assembly (6) further comprises an outer roller shaft rod (602) and an outer roller mounting base (603); the outer roller mounting base (603) is a U-shaped mounting base composed of a bottom plate and two side plates fixed symmetrically on one side plate surface of the bottom plate, two outer roller shaft holes (601) penetrating through the two side plates are symmetrically arranged on the two side plates, and the other side plate surface of the bottom plate is fixed on the end face of the piston end of the jack (5); the outer roller (604) is a roller structure, a central axial through hole is arranged on the outer roller (604), the outer roller (604) is rotatably sleeved outside the outer roller shaft rod (602), and the two ends of the outer roller shaft rod (602) are arranged in and fixed in the two outer roller shaft holes (601) on the outer roller mounting base (603).

5. The adjustable guide limiter for rock-socketed pile driving according to claim 1 or 4, characterized in that, The outer roller (604) is an outer convex roller drum with a gradually decreasing outer diameter from the middle part to the two ends, and the curvature of the outer wall of the outer roller (604) in the axial direction is adapted to the curvature of the inner wall of the protection cylinder, so that the outer roller (604) can reciprocatingly roll along the axial direction of the protection cylinder in a manner of abutting the inner wall of the protection cylinder.

6. The adjustable guide limiter for rock-socketed pile driving according to claim 1, wherein, The inner sliding assembly (7) further comprises an inner roller shaft rod (701); the inner roller (704) is a roller structure, a central axial through hole is arranged on the inner roller (704), and the inner roller (704) is rotatably sleeved outside the inner roller shaft rod (701); and the two ends outside the inner roller shaft rod (701) are fixed on the opposite side walls in the horizontal direction in the inner sliding assembly mounting groove (702).

7. The adjustable guide limiter for rock-socketed pile driving according to claim 1 or 6, characterized in that, The inner roller (704) is an inner concave roller drum with an increasing outer diameter from the middle part to the two ends, and the curvature of the outer wall of the inner roller (704) in the axial direction is adapted to the curvature of the outer wall of the engineering pile, so that the inner roller (704) can reciprocatingly roll along the axial direction of the engineering pile in a manner of abutting the outer wall of the engineering pile.

8. The adjustable guide limiter for rock-socketed pile driving according to claim 1, wherein, The interval distance of the two adjacent limiting assemblies in the axial direction is 15cm-25cm.

9. The adjustable guide limiter for rock-socketed pile driving according to claim 1, wherein, A plurality of connecting lifting lugs (8) are arranged on the top surface and the bottom surface of the base ring (1) of each limiting assembly in the circumferential direction, and the number of the connecting lifting lugs (8) is consistent with the number of the connecting anchor chains (9) in each set of anchor chain assemblies; the two ends of each connecting anchor chain (9) are provided with shackles (10), so that the end of each connecting anchor chain (9) is detachably connected with the connecting lifting lug (8) through the shackle (10).

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