A combined karst cave steel reinforcement cage and its assembly method

Abstract

The invention belongs to the technical field of karst cave steel cages, and particularly relates to a combined karst cave steel cage and an assembly method thereof, comprising a steel cage frame assembly, a receiving assembly, a position limiting pouring assembly and a pile tip assembly; the steel cage frame assembly is an open cylindrical structure, and the receiving assembly is arranged at the top opening of the steel cage frame assembly; a group of pile tip assemblies are movably fitted and connected to the top of another group of receiving assemblies, and a group of pile tip assemblies are rotated so that the installation angle can be freely adjusted with the receiving assembly, and the bottom of a group of pile tip assemblies is surrounded and sleeved by the position limiting pouring assembly, so that the position limiting pouring assembly and the bottom of the pile tip assembly form a space for storing poured concrete, and the position limiting pouring assembly is fastened to a group of pile tip assemblies, so that the efficiency of the angle docking of the two groups of steel cages is improved, and the assembly of the two groups of steel cages can be completed by a single person.

Description

Technical Field

[0001] The invention belongs to the technical field of karst cave steel cages, and in particular relates to a combined karst cave steel cage and an assembly method thereof. Background Art

[0002] When constructing bored piles in karst areas, the pile hole often needs to pass through a cave, so that the pile hole is connected to the cave to form a connecting port, and a steel cage is sunk in the pile hole. The steel cage has a connecting section connected to the cave. During the bored pile construction process, it is very easy to leak slurry, shrink neck and collapse the hole; in addition, a large amount of concrete will flow into the connecting port from the connecting section and fill the cave, resulting in a large amount of over-pouring of concrete, a high filling coefficient, and a huge waste of concrete, resulting in excessively high project costs.

[0003] After searching, in the prior art, Chinese patent application number CN201920121055.6, application date: 2019-1-23, discloses a steel cage for the construction of cast-in-place piles passing through a cave, the pile hole is connected to the cave, and a connecting port is formed. The steel cage structure for the construction of cast-in-place piles passing through a cave includes a cage body, the cage body has a connecting section corresponding to the connecting port, the outer periphery of the connecting section is surrounded by a cloth body, the cloth body covers the entire connecting section, and the inner wall of the connecting section is provided with a metal mesh body surrounded by a metal mesh body, and the metal mesh body covers the connecting section of the cage body; when the steel cage is lowered to the pile hole, the cloth body is aligned with the connecting port. When the concrete is poured, under the cooperation of the metal mesh body and the cloth body, the concrete will not flow into the connecting port from the connecting section of the cage body into the cave, thereby greatly saving the amount of concrete poured, thereby saving the construction cost; in addition, the materials of the metal mesh body and the cloth body are relatively cheap, and the pouring construction is reliable and economical.

[0004] However, the equipment still has the following defects: although it can greatly save the amount of concrete poured, thereby saving construction costs, when multiple groups of steel cages are connected by hoisting, multiple people are required to stand around the steel cages to perform docking operations at the connection points, and the docking direction of the two groups of steel cages can only be changed by a crane, and the assembly efficiency is generally low. Summary of the invention

[0005] In view of the above problems, the present invention provides a combined karst cave steel cage, comprising a steel cage frame assembly, a receiving assembly, a limiting grouting assembly and a pile tip assembly; the steel cage frame assembly is an open cylindrical structure, and the receiving assembly is arranged at the top opening of the steel cage frame assembly, the limiting grouting assembly is vertically arranged at the bottom of the receiving assembly, and the central axes of the limiting grouting assembly, the receiving assembly and the steel cage frame assembly coincide, the pile tip assembly is fixedly connected to the bottom of the steel cage frame assembly, and the tip of the pile tip assembly is located on the side away from the limiting grouting assembly.

[0006] Furthermore, the steel cage frame assembly includes several groups of reinforcing ribs; several groups of the reinforcing ribs are vertically arranged at equal intervals, several groups of the reinforcing ribs are circular ring structures, and the central axes of several groups of the reinforcing ribs coincide with each other, the inner walls of several groups of the reinforcing ribs are fixedly connected with several groups of longitudinal ribs, and several groups of the longitudinal ribs are arranged in a circular array with the central axis of the reinforcing ribs as the center.

[0007] Furthermore, a first through hole is opened on the outer wall of one group of the longitudinal reinforcements and on one side close to the top, a first internal threaded hole is opened on the outer wall of another group of the longitudinal reinforcements and on one side close to the top, several groups of spiral stirrups are fixedly connected to the outer walls of several groups of the longitudinal reinforcements, several groups of the spiral stirrups are of circular ring structure, and several groups of the spiral stirrups are vertically arranged at equal intervals.

[0008] Furthermore, the receiving component includes a first stabilizing rib; the first stabilizing rib is an annular structure, the first stabilizing rib is fixedly connected to the inner wall of several groups of longitudinal ribs and close to the side of the first through hole, the top and bottom of the first stabilizing rib are provided with guide grooves, and the two groups of guide grooves are not connected, the inner wall of the first stabilizing rib is slidably connected with several groups of linkage mechanisms, and the several groups of linkage mechanisms are arranged in a ring array with the central axis of the first stabilizing rib as the center.

[0009] Furthermore, the linkage mechanism includes a linkage block; the linkage block is a fan-shaped structure, and an assembly groove is provided on one side of the inner wall of the linkage block, the central axis of the assembly groove coincides with the central axis of the linkage block, and a guide roller is provided on the inner wall of the assembly groove, and the guide roller is rollingly fitted and connected to the inner wall of the first stabilizing rib.

[0010] Furthermore, two groups of limit pins are fixedly connected to the inner wall of the linkage block and one side close to the assembly groove, the two groups of limit pins are symmetrically arranged with the central axis of the assembly groove as the center, and the two groups of limit pins are slidably fitted to the inner wall of the guide groove, the outer walls of the two groups of limit pins are fixedly connected with linkage rods, and the two groups of linkage rods are slidably fitted to the inner walls of the two groups of guide grooves, and the end of the linkage rod and the side away from the linkage block are movably connected.

[0011] Furthermore, the limiting injection assembly includes a second stabilizing rib; the second stabilizing rib is an annular structure, the second stabilizing rib is fixedly connected to the inner wall of several groups of longitudinal ribs and close to one side of the first stabilizing rib, the inner wall of the second stabilizing rib is fixedly connected to several groups of reinforcing rods, several groups of the reinforcing rods are arranged in a circular array with the central axis of the second stabilizing rib as the center, the ends of several groups of the reinforcing rods are fixedly connected to the limiting cylinder, and the top of the limiting cylinder is an open structure.

[0012] Furthermore, the pile tip assembly includes a third stabilizing rib; the third stabilizing rib is an annular structure, and the inner wall of the third stabilizing rib is fixedly connected with a plurality of groups of pile tip support rods, one ends of the plurality of groups of pile tip support rods are close to each other, and the other ends of the plurality of groups of pile tip support rods are fixedly connected to the bottom end of the longitudinal rib, the tops of the plurality of groups of pile tip support rods are fixedly connected with an assembly ring, a second through hole is provided on the outer wall of one group of pile tip support rods and on a side close to the third stabilizing rib, and a second internal threaded hole is provided on the outer wall of the other groups of pile tip support rods and on a side close to the third stabilizing rib.

[0013] Furthermore, a positioning pin is passed through and slidably connected to the assembly ring, and the end of the positioning pin extends into the second through hole. A plurality of groups of bolts are threadedly connected to the assembly ring, and the plurality of groups of bolts are arranged in a circular array with the central axis of the assembly ring as the center, and the ends of the plurality of groups of bolts are all threadedly connected to the second internal threaded hole. An isolation cover is rotatably connected to one side of the top of the assembly ring, and the isolation cover is movably clamped in the top opening of the assembly ring and used in conjunction therewith.

[0014] A method for assembling a combined karst cave steel cage comprises the following steps:

[0015] During the process of hoisting and assembling, the end of the pile tip assembly at the bottom of one set of steel cages can quickly approach the receiving assembly at the top of another set of steel cages;

[0016] During the continuous falling of a set of steel cages, a set of pile tip components is movably fitted and connected to the top of another set of receiving components;

[0017] The end of a group of pile tip components after active bonding is limited by the limit injection component, so that the two groups of steel cages can be quickly connected during the lifting and assembly process;

[0018] A group of pile tip assemblies is movably connected to the top of another group of receiving assemblies, and a group of pile tip assemblies is rotated to freely adjust the installation angle with the receiving assemblies;

[0019] The bottom of a group of pile tip assemblies is enclosed and sleeved by a position limiting pouring assembly, so that the position limiting pouring assembly and the bottom of the pile tip assembly form a space for storing poured concrete;

[0020] A limit injection assembly is fastened to a group of pile tip assemblies.

[0021] The beneficial effects of the present invention are:

[0022] 1. One set of the pile tip components is movably and fittingly connected to the top of the other set of the receiving components, and one set of the pile tip components is rotated to freely adjust the installation angle with the receiving components. The bottom of one set of the pile tip components is surrounded and sleeved by the limit pouring component, so that a space for storing the poured concrete is formed between the limit pouring component and the bottom of the pile tip components. Through the tight connection between the limit pouring component and one set of the pile tip components, the docking efficiency of the angles of the two sets of steel reinforcement cages is improved, and the assembly work of the two sets of steel reinforcement cages can be completed by one person.

[0023] 2. The second stabilizing bars are used to increase the connection stability at the top positions of several groups of longitudinal bars, and several groups of reinforcing bars arranged on the inner wall of the second stabilizing bars are connected to the limit cylinder, so that during the concrete pouring process, the limit cylinder can centrally collect the poured concrete, and the collected concrete uniformly wraps around the tip of the pile tip components, avoiding excessive waste during concrete pouring and improving the stability of the concrete pouring position.

[0024] 3. The positioning pin columns are slidably connected to the inner wall of the second through holes. By using the slid-out positioning pin columns to penetrate through the first through holes on the other set of steel reinforcement cages, a rapid positioning function is achieved during the connection process of the two sets of steel reinforcement cages in a vertical state; several groups of the bolts are sequentially rotationally connected to the first internal threaded holes on the other set of steel reinforcement cages, so that a rapid threaded fastening and assembly function is achieved during the connection process of the two sets of steel reinforcement cages in a vertical state, improving the operation convenience of one-person fastening.

[0025] 4. The isolation cover plate is rotatably connected to one side of the top of the assembly ring. After several groups of bolts are threadedly fastened and assembled, the isolation cover plate can be used to seal the top opening of the assembly ring to prevent the poured concrete from contacting the positioning pin columns and the bolts, keeping the positioning pin columns and the bolts dry, preventing corrosion of the positioning pin columns and the bolts, prolonging the assembly stability of the two sets of steel reinforcement cages, and improving the connection life of the two sets of steel reinforcement cages in the karst cave.

[0026] Other features and advantages of the present invention will be described in the subsequent description, and part of them will become obvious from the description or be understood by implementing the present invention. The objectives and other advantages of the present invention can be achieved and obtained through the structures pointed out in the description, the claims, and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0028] Figure 1 A schematic diagram of the structure of a combined karst cave reinforcement cage according to an embodiment of the present invention is shown;

[0029] Figure 2 A schematic structural diagram of a steel cage frame assembly according to an embodiment of the present invention is shown;

[0030] Figure 3 A schematic diagram of the structure of a receiving component according to an embodiment of the present invention is shown;

[0031] Figure 4 A schematic diagram showing the structure of the linkage mechanism according to an embodiment of the present invention is shown;

[0032] Figure 5 A schematic diagram of the structure of a linkage block and a linkage rod according to an embodiment of the present invention is shown;

[0033] Figure 6 A schematic diagram of the structure of a position limiting injection assembly according to an embodiment of the present invention is shown;

[0034] Figure 7 A schematic structural diagram of a pile tip assembly according to an embodiment of the present invention is shown.

[0035] In the figure: 1. steel cage frame assembly; 11. reinforcing ribs; 12. longitudinal ribs; 13. first through hole; 14. spiral stirrups; 15. first internal threaded hole; 2. receiving assembly; 21. first stabilizing rib; 22. guide slide; 23. linkage mechanism; 231. linkage block; 232. assembly groove; 233. guide roller; 234. limiting pin; 235. linkage rod; 3. limiting injection assembly; 31. second stabilizing rib; 32. reinforcing rod; 33. limiting cylinder; 4. pile tip assembly; 41. third stabilizing rib; 42. pile tip support rod; 43. assembly ring; 44. second through hole; 45. positioning pin; 46. second internal threaded hole; 47. bolt; 48. isolation cover. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] The embodiment of the present invention provides a combined karst cave steel cage, including a steel cage frame assembly 1, a receiving assembly 2, a limit pouring assembly 3 and a pile tip assembly 4; illustratively, Figure 1 shown.

[0038] The steel cage frame assembly 1 is an open cylindrical structure, and the receiving assembly 2 is arranged at the top opening of the steel cage frame assembly 1, the limiting pouring assembly 3 is vertically arranged at the bottom of the receiving assembly 2, and the central axis of the limiting pouring assembly 3, the receiving assembly 2 and the steel cage frame assembly 1 coincides, the pile tip assembly 4 is fixedly connected to the bottom of the steel cage frame assembly 1, and the tip of the pile tip assembly 4 is located on the side away from the limiting pouring assembly 3.

[0039] Specifically, the steel cage frame assembly 1 is used to assemble the receiving assembly 2, the limiting pouring assembly 3 and the pile tip assembly 4, so that the receiving assembly 2, the limiting pouring assembly 3 and the pile tip assembly 4 are vertically assembled on the steel cage frame assembly 1 in sequence, and the pile tip assembly 4 at the bottom of a group of steel cages can quickly approach the receiving assembly 2 at the top of another group of steel cages during the process of lifting and assembly, and in the process of continuous falling of a group of steel cages, a group of pile tip assemblies 4 are movably fitted and connected to the top of another group of receiving assemblies 2, and the limiting pouring assembly 3 is used to limit the end of the group of pile tip assemblies 4 after the movably fitting, so that the two groups of steel cages can be quickly connected during the process of lifting and assembly;

[0040] One group of pile tip assemblies 4 is movably connected to the top of another group of receiving assemblies 2, and one group of pile tip assemblies 4 is rotated to freely adjust the installation angle with the receiving assemblies 2, so that the assembly efficiency of the two groups of steel cage installation holes is improved;

[0041] The position limiting pouring assembly 3 surrounds and sleeves the bottom of a group of the pile tip assemblies 4, so that the position limiting pouring assembly 3 and the bottom of the pile tip assembly 4 form a space for storing poured concrete, so that the poured concrete can be stored in the position limiting pouring assembly 3, which is used to fasten the position limiting pouring assembly 3 and the group of the pile tip assemblies 4, thereby improving the stability of the connection between the two groups of steel cages.

[0042] The steel cage frame assembly 1 includes a plurality of groups of reinforcing ribs 11; for example, Figure 2 shown.

[0043] Several groups of the reinforcing ribs 11 are arranged vertically at equal intervals, several groups of the reinforcing ribs 11 are of circular ring structure, and the central axes of several groups of the reinforcing ribs 11 coincide, the inner walls of several groups of the reinforcing ribs 11 are fixedly connected with several groups of longitudinal ribs 12, and several groups of the longitudinal ribs 12 are arranged in a circular array with the central axis of the reinforcing ribs 11 as the center, a first through hole 13 is opened on the outer wall of one group of the longitudinal ribs 12 and one side close to the top, and a first internal threaded hole 15 is opened on the outer wall of the other groups of the longitudinal ribs 12 and one side close to the top, several groups of spiral stirrups 14 are fixedly connected to the outer walls of several groups of the longitudinal ribs 12, several groups of the spiral stirrups 14 are of circular ring structure, and several groups of the spiral stirrups 14 are arranged vertically at equal intervals.

[0044] Specifically, one side wall of several groups of longitudinal bars 12 is fixedly connected to the reinforcing bar 11, and the other side wall of several groups of longitudinal bars 12 is fixedly connected to the spiral hoop 14 to form a steel cage body, and the first through holes 13 and the first internal threaded holes 15 opened on the outer walls of several groups of longitudinal bars 12 are used for rapid positioning of the steel cage body during assembly and rapid thread tightening.

[0045] The receiving assembly 2 includes a first stabilizing rib 21; illustratively, Figure 3 shown.

[0046] The first stabilizing rib 21 is an annular structure. The first stabilizing rib 21 is fixedly connected to the inner wall of several groups of longitudinal ribs 12 and one side close to the first through hole 13. The top and bottom of the first stabilizing rib 21 are provided with guide grooves 22, and the two groups of guide grooves 22 are not connected. The inner wall of the first stabilizing rib 21 is slidably connected with several groups of linkage mechanisms 23. The several groups of linkage mechanisms 23 are arranged in an annular array with the central axis of the first stabilizing rib 21 as the center.

[0047] The linkage mechanism 23 includes a linkage block 231; illustratively, as Figure 4 and Figure 5 shown.

[0048] The linkage block 231 is in a fan-shaped ring structure, and an assembly groove 232 is formed on one side of the inner wall of the linkage block 231. The central axis of the assembly groove 232 coincides with the central axis of the linkage block 231. A guiding roller 233 is arranged on the inner wall of the assembly groove 232, and the guiding roller 233 is in rolling and fitting connection with the inner wall of the first stabilizing rib 21. Two groups of limit pin columns 234 are fixedly connected to the inner wall of the linkage block 231 and close to one side of the assembly groove 232. The two groups of limit pin columns 234 are symmetrically arranged with the central axis of the assembly groove 232 as the center, and both groups of limit pin columns 234 are in sliding and fitting connection with the inner wall of the guiding chute 22. Two linkage rods 235 are fixedly connected to the outer walls of the two groups of limit pin columns 234, and both groups of linkage rods 235 are in sliding and fitting connection with the inner walls of the two guiding chutes 22. The ends of the linkage rods 235 and the sides far from the linkage block 231 are in movable abutting connection.

[0049] Specifically, through the guiding rollers 233 and the two groups of limit pin columns 234 arranged on the inner walls of several groups of the linkage blocks 231, several groups of the linkage blocks 231 can rotate around the central axis center of the first stabilizing rib 21, and by the mutual abutting of the linkage rods 235 on both sides of several groups of the linkage blocks 231, the function that several groups of the linkage blocks 231 can always maintain equal spacing during the rotation process can be achieved, so that several groups of the linkage blocks 231 can be in equal-spacing horizontal contact with the pile tip assembly 4 at the same time during the cooperation process.

[0050] The limit pouring assembly 3 includes a second stabilizing rib 31; Exemplarily, as Figure 6 shown.

[0051] The second stabilizing rib 31 is in a ring structure. The second stabilizing rib 31 is fixedly connected to the inner walls of several groups of longitudinal bars 12 and close to one side of the first stabilizing rib 21. Several groups of reinforcing bars 32 are fixedly connected to the inner wall of the second stabilizing rib 31. The several groups of reinforcing bars 32 are arranged in a circular array with the central axis of the second stabilizing rib 31 as the center. The ends of the several groups of reinforcing bars 32 are fixedly connected with a limit cylinder 33, and the top of the limit cylinder 33 is in an open structure.

[0052] Specifically, the second stabilizing rib 31 is used to increase the connection stability at the top positions of several groups of longitudinal bars 12, and is connected with the limit cylinder 33 through several groups of reinforcing bars 32 arranged on the inner wall of the second stabilizing rib 31, so that during the concrete pouring process, the limit cylinder 33 can centrally collect the poured concrete, and the collected concrete can evenly cover the tip of the pile tip assembly 4.

[0053] The pile tip assembly 4 includes a third stabilizing rib 41; Exemplarily, as Figure 7 shown.

[0054] The third stabilizing rib 41 is of an annular structure, and a number of pile tip support rods 42 are fixedly connected to the inner wall of the third stabilizing rib 41. One ends of the number of pile tip support rods 42 are close to each other, and the other ends of the number of pile tip support rods 42 are fixedly connected to the bottom end of the longitudinal reinforcement 12. A number of assembly rings 43 are fixedly connected to the tops of the number of pile tip support rods 42. A second through hole 44 is formed in the outer wall of one of the pile tip support rods 42 and on the side close to the third stabilizing rib 41. Second internal threaded holes 46 are formed in the outer walls of the other pile tip support rods 42 and on the side close to the third stabilizing rib 41. A positioning pin 45 is penetrated and slidably connected to the assembly ring 43. The end of the positioning pin 45 extends into the second through hole 44. A number of bolts 47 are threadedly connected to the assembly ring 43. The number of bolts 47 is arranged in a circular array centered on the central axis of the assembly ring 43. The ends of the number of bolts 47 are threadedly connected to the second internal threaded holes 46. One side of the top of the assembly ring 43 is rotatably connected to a separation cover plate 48. The separation cover plate 48 is movably clamped at the top opening of the assembly ring 43 and is used in cooperation.

[0055] Specifically, the positioning pin 45 is slidably connected to the inner wall of the second through hole 44. By using the slid-out positioning pin 45 to penetrate through the first through hole 13 on another steel reinforcement cage, a rapid positioning effect can be achieved during the connection process of the two steel reinforcement cages in a vertical state.

[0056] The number of bolts 47 are sequentially rotatably connected to the first internal threaded holes 15 on another steel reinforcement cage, so as to achieve a rapid threaded fastening and assembly effect during the connection process of the two steel reinforcement cages in a vertical state.

[0057] The separation cover plate 48 is rotatably connected to one side of the top of the assembly ring 43. After the number of bolts 47 are threadedly fastened and assembled, the separation cover plate 48 can be used to seal the top opening of the assembly ring 43, so as to prevent the concrete after pouring from contacting the positioning pin 45 and the bolts 47, keep the positioning pin 45 and the bolts 47 dry, and prevent the positioning pin 45 and the bolts 47 from being corroded, thereby prolonging the assembly stability of the two steel reinforcement cages.

[0058] The working principle of a combined karst cave steel reinforcement cage proposed by an embodiment of the present invention is as follows:

[0059] By vertically hoisting one steel reinforcement cage above another steel reinforcement cage;

[0060] When the third stabilizing ribs 41 on one set of steel cages fall, they contact with several groups of linkage blocks 231 of another set of steel cages at the bottom, and the linkage blocks 231 can rotate around the center of the central axis of the first stabilizing ribs 21, and the linkage rods 235 on both sides of the linkage blocks 231 can contact each other, so that the linkage blocks 231 can always maintain equal spacing during the rotation process;

[0061] When the first through hole 13 on one group of steel cages is rotated to communicate with the second through hole 44 on the other group of steel cages, the positioning pin 45 is slidably connected to the inner wall of the second through hole 44, and the sliding positioning pin 45 penetrates the first through hole 13 on the other group of steel cages, so that the two groups of steel cages can be quickly positioned in the process of being connected in a vertical state;

[0062] A plurality of sets of bolts 47 are sequentially rotated and connected to the first internal threaded holes 15 of another set of steel cages, so that the two sets of steel cages can be quickly threaded and fastened in the process of being connected in a vertical state;

[0063] The isolation cover plate 48 is rotatably connected to one side of the top of the assembly ring 43, so that after a plurality of groups of bolts 47 are threadedly fastened and assembled, the isolation cover plate 48 can be used to seal the top opening of the assembly ring 43 to prevent the poured concrete from contacting the positioning pins 45 and the bolts 47, keep the positioning pins 45 and the bolts 47 dry, prevent the positioning pins 45 and the bolts 47 from corrosion, and extend the assembly stability of the two groups of steel cages;

[0064] The second stabilizing rib 31 is used to increase the connection stability of the top position of several groups of longitudinal bars 12, and several groups of reinforcing rods 32 arranged on the inner wall of the second stabilizing rib 31 are connected to the limiting cylinder 33, so that the limiting cylinder 33 can collect the poured concrete in a centralized manner during the concrete pouring process, so that the collected concrete is evenly coated on the tips of several groups of pile tip support rods 42.

[0065] Based on the above-mentioned combined karst cave steel cage, an embodiment of the present invention further provides an assembly method of the combined karst cave steel cage, comprising the following steps:

[0066] During the process of hoisting and assembling, the end of the pile tip assembly at the bottom of one set of steel cages can quickly approach the receiving assembly at the top of another set of steel cages;

[0067] During the continuous falling of a set of steel cages, a set of pile tip components is movably fitted and connected to the top of another set of receiving components;

[0068] The end of a group of pile tip components after active fitting is limited by the limit injection component, so that the two groups of steel cages can be quickly connected during the lifting and assembly process;

[0069] One set of the pile tip assemblies is movably and fittingly connected to the top of the other set of the receiving assemblies, and one set of the pile tip assemblies is rotated to freely adjust the installation angle with the receiving assemblies;

[0070] The bottom of one set of the pile tip assemblies is surrounded and sleeved by the limiting perfusion assembly, so that a space for storing perfusion concrete is formed between the limiting perfusion assembly and the bottom of the pile tip assemblies;

[0071] The limiting perfusion assembly is fixedly connected to one set of the pile tip assemblies.

[0072] Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A combined karst cave steel reinforcement cage, characterized in that: The invention comprises a steel cage frame assembly (1), a receiving assembly (2), a position limiting pouring assembly (3) and a pile tip assembly (4); the steel cage frame assembly (1) is an open cylindrical structure, the receiving assembly (2) is arranged at the top opening of the steel cage frame assembly (1), the position limiting pouring assembly (3) is vertically arranged at the bottom of the receiving assembly (2), and the central axes of the position limiting pouring assembly (3), the receiving assembly (2) and the steel cage frame assembly (1) coincide with each other; the pile tip assembly (4) is fixedly connected to the bottom of the steel cage frame assembly (1), and the tip of the pile tip assembly (4) is located on a side away from the position limiting pouring assembly (3); The steel cage frame assembly (1) comprises a plurality of groups of reinforcing ribs (11); the plurality of groups of reinforcing ribs (11) are arranged vertically at equal intervals, the plurality of groups of reinforcing ribs (11) are of a circular ring structure, and the central axes of the plurality of groups of reinforcing ribs (11) coincide with each other; the inner walls of the plurality of groups of reinforcing ribs (11) are fixedly connected to a plurality of groups of longitudinal ribs (12), and the plurality of groups of longitudinal ribs (12) are arranged in a circular array with the central axis of the reinforcing ribs (11) as the center; A first through hole (13) is provided on the outer wall of one group of longitudinal bars (12) and on one side close to the top, and a first internal threaded hole (15) is provided on the outer wall of another group of longitudinal bars (12) and on one side close to the top, and a plurality of groups of spiral stirrups (14) are fixedly connected to the outer walls of the plurality of groups of longitudinal bars (12), wherein the plurality of groups of spiral stirrups (14) are of annular structure, and the plurality of groups of spiral stirrups (14) are vertically arranged at equal intervals; The receiving assembly (2) comprises a first stabilizing rib (21); the first stabilizing rib (21) is an annular structure, the first stabilizing rib (21) is fixedly connected to the inner wall of a plurality of groups of longitudinal ribs (12) and to a side close to the first through hole (13), the top and bottom of the first stabilizing rib (21) are both provided with guide grooves (22), and the two groups of guide grooves (22) are not connected, the inner wall of the first stabilizing rib (21) is slidably connected to a plurality of groups of linkage mechanisms (23), and the plurality of groups of linkage mechanisms (23) are arranged in an annular array with the central axis of the first stabilizing rib (21) as the center; The linkage mechanism (23) comprises a linkage block (231); the linkage block (231) is a fan-shaped structure, and a mounting groove (232) is provided on one side of the inner wall of the linkage block (231); the central axis of the mounting groove (232) coincides with the central axis of the linkage block (231); a guide roller (233) is provided on the inner wall of the mounting groove (232), and the guide roller (233) is rollingly attached to the inner wall of the first stabilizing rib (21); Two groups of limiting pins (234) are fixedly connected to the inner wall of the linkage block (231) and one side close to the assembly groove (232). The two groups of limiting pins (234) are symmetrically arranged with the central axis of the assembly groove (232) as the center, and the two groups of limiting pins (234) are slidably fitted and connected to the inner wall of the guide slide groove (22). The outer walls of the two groups of limiting pins (234) are fixedly connected to linkage rods (235), and the two groups of linkage rods (235) are slidably fitted and connected to the inner walls of the two groups of guide slide grooves (22). The end of the linkage rod (235) and the side away from the linkage block (231) are movably contact-connected; The position limiting injection assembly (3) comprises a second stabilizing rib (31); the second stabilizing rib (31) is an annular structure, the second stabilizing rib (31) is fixedly connected to the inner wall of a plurality of groups of longitudinal ribs (12) and close to a side of the first stabilizing rib (21), the inner wall of the second stabilizing rib (31) is fixedly connected to a plurality of groups of reinforcing rods (32), the plurality of groups of reinforcing rods (32) are arranged in an annular array with the central axis of the second stabilizing rib (31) as the center, the ends of the plurality of groups of reinforcing rods (32) are fixedly connected to the position limiting cylinder (33), and the top of the position limiting cylinder (33) is an open structure; The pile tip assembly (4) comprises a third stabilizing rib (41); the third stabilizing rib (41) is an annular structure, and the inner wall of the third stabilizing rib (41) is fixedly connected to a plurality of pile tip support rods (42), one end of the plurality of pile tip support rods (42) is close to each other, and the other end of the plurality of pile tip support rods (42) is fixedly connected to the bottom end of the longitudinal rib (12), the top of the plurality of pile tip support rods (42) is fixedly connected to an assembly ring (43), the outer wall of one group of pile tip support rods (42) and the side close to the third stabilizing rib (41) are provided with a second through hole (44), and the outer wall of the other group of pile tip support rods (42) and the side close to the third stabilizing rib (41) are provided with a second internal threaded hole (46); A positioning pin (45) passes through and is slidably connected to the assembly ring (43); the end of the positioning pin (45) extends into the second through hole (44); a plurality of groups of bolts (47) are threadedly connected to the assembly ring (43); the plurality of groups of bolts (47) are arranged in a circular array with the central axis of the assembly ring (43) as the center; the ends of the plurality of groups of bolts (47) are all threadedly connected to the second internal threaded hole (46); an isolation cover plate (48) is rotatably connected to one side of the top of the assembly ring (43); the isolation cover plate (48) is movably clamped at the top opening of the assembly ring (43) and used in conjunction with the assembly ring (43).

2. An assembly method of the combined karst cave steel reinforcement cage according to claim 1, characterized in that: The assembly method comprises: During the process of hoisting and assembling, the end of the pile tip assembly at the bottom of one set of steel cages can quickly approach the receiving assembly at the top of another set of steel cages; During the continuous falling of a set of steel cages, a set of pile tip components is movably fitted and connected to the top of another set of receiving components; The end of a group of pile tip components after active bonding is limited by the limit injection component, so that the two groups of steel cages can be quickly connected during the lifting and assembly process; A group of pile tip assemblies is movably connected to the top of another group of receiving assemblies, and a group of pile tip assemblies is rotated to freely adjust the installation angle with the receiving assemblies; The bottom of a group of pile tip assemblies is enclosed and sleeved by a position limiting pouring assembly, so that the position limiting pouring assembly and the bottom of the pile tip assembly form a space for storing poured concrete; A limit injection assembly is fastened to a group of pile tip assemblies.

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