Highway cast-in-situ bored pile construction device

Abstract

The invention discloses a highway cast-in-situ bored pile construction device. The construction device comprises a containing cylinder, a force transmission disc, a hydraulic assembly, a ground drilling nail, a plurality of first clamping jaws and a plurality of first elastic pieces. The containing cylinder is placed at the bottom of a drill hole, a stand column extending in the axial direction of the containing cylinder is arranged at the center of the bottom of the containing cylinder, and a plurality of clamping parts are arranged on the inner wall of the containing cylinder. The multiple first clamping jaws are rotationally connected to the side wall of the stand column in the circumferential direction of the stand column. The first elastic pieces can make the first clamping jaws have the tendency of abutting against the clamping parts in a one-to-one correspondence mode. The stand column is sleeved with the force transmission disc. The hydraulic assembly is connected to the barrel bottom of the containing barrel and located between the force transmission disc and the barrel bottom of the containing barrel, the hydraulic assembly is provided with a stress end and an output end, and the force transmission disc can apply force to the stress end in the process of sliding towards the hydraulic assembly; the ground drilling nail is provided with a conical head with threads, and the ground drilling nail can rotate and stretch out when being pushed by liquid flowing out of the output end. The device has the technical effect of limiting upward floating of the reinforcement cage.

Description

Technical Field

[0001] The invention relates to the technical field of bored cast-in-place pile construction, in particular to a highway bored cast-in-place pile construction device. Background Art

[0002] Cast-in-place piles have the advantages of large single pile bearing capacity and strong shear and bending resistance, and are currently the most widely used type of pile. During construction, a cast-in-place hole is first dug, and then a steel cage is placed into the cast-in-place hole and grouting is performed. However, during the grouting process, the steel cage may float up, affecting the grouting effect.

[0003] When the top of the steel cage is close to the ground, the existing construction party will choose to fix the top of the steel cage on the ground to prevent the steel cage from floating up. However, the top fixation has a relatively poor effect on the verticality control of the steel cage in the hole, and the steel cage is prone to tilt, affecting the stress performance of the pile body. Summary of the invention

[0004] In view of this, the present invention provides a highway bored pile construction device for solving the technical problems of steel cage floating up during grouting and poor effect of the existing fixing method in preventing the steel cage from floating up.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: A highway bored pile construction device, the construction device comprising: A receiving tube is placed at the bottom of the drill hole, a column extending along the axial direction of the receiving tube is provided at the center of the bottom of the receiving tube, and a plurality of clamping parts are provided on the inner wall of the receiving tube; A plurality of first claws are connected to the side wall of the column in a circumferential rotational manner along the column; A plurality of first elastic members can correspond one by one to make each of the first claws have a tendency to abut against each of the clamping portions; A force transmission disc is sleeved on the column and is located between the first claw and the rotation connection of the column and the bottom of the receiving tube. The force transmission disc can slide in the receiving tube relative to the column. A hydraulic assembly is connected to the bottom of the receiving tube and is located between the force transmission disc and the bottom of the receiving tube. The hydraulic assembly has a force receiving end and an output end. The force transmission disc can apply force to the force receiving end during the sliding process toward the hydraulic assembly, so that the liquid in the hydraulic assembly flows toward the output end. A ground drilling nail has a conical head with a thread, a first through hole is formed at the bottom of the receiving tube, a second through hole connected to the first through hole is formed at the output end of the hydraulic component, the first through hole is connected to the second through hole to form a receiving hole, the ground drilling nail is at least partially received in the receiving hole, one of the ground drilling nail and the inner wall of the receiving hole is provided with a spiral guide groove, and the other is provided with a guide block extending into the guide groove, so that the ground drilling nail can be rotated and extended when pushed by the liquid flowing out from the output end.

[0006] In some embodiments of the highway bored pile construction device, a plurality of placement grooves are provided on the inner wall of the borehole, each of the placement grooves is arranged circumferentially along the borehole, and the bottom of the placement groove extends along the extension direction of the borehole to the bottom and the opening of the borehole, and the construction device further includes a guide column, which is received in the placement groove; A slide groove is formed on one side of each guide column facing the inner side of the bore hole, and a sliding block which can extend into each slide groove in a one-to-one correspondence is formed on the outer side wall of the receiving tube.

[0007] In some embodiments of the highway bored pile construction device, the construction device also includes a plurality of expansion blocks, the receiving tube is provided with a plurality of third through holes corresponding to the sliding path of the force transmission disk, each of the expansion blocks is rotatably connected to the inner wall of each of the third through holes one by one, the end size of the expansion block away from the first claw is larger than the end size close to the first claw, and when the force transmission disk approaches the bottom of the receiving tube, each of the expansion blocks can be abutted against the bottom of the slide groove one by one.

[0008] In some embodiments of the highway bored pile construction device, the construction device also includes a plurality of clamping assemblies, each of the clamping assemblies is installed one-to-one at the bottom of each of the slide grooves and is located at the end away from the bottom of the receiving tube, the clamping assemblies include a plurality of second claws and a plurality of second elastic members, each of the second claws is rotatably connected to the bottom of the slide groove along the extension direction of the slide groove, each of the second elastic members is used to correspond one-to-one to make each of the second claws have a tendency to reset, and when the steel cage is placed in the drilling process, the annular hoop on it can make the second claw rotate clockwise.

[0009] In some embodiments of the highway bored pile construction device, the construction device further includes a plurality of limit members, each of which is correspondingly arranged on a rotation path of each second clamping claw and is used to limit the counterclockwise rotation of the second clamping claw.

[0010] In some embodiments of the highway bored pile construction device, an accommodating space is provided in the end of the guide column away from the bottom of the receiving tube; The construction device also includes a rotating member and a sliding member, the rotating member is rotatably connected to the guide column, the rotating member has a transmission section accommodated in the accommodating space, and a force-applying end portion extending from one end away from the bottom of the accommodating tube, a portion of the sliding member is accommodated in the accommodating space, and the other portion extends from a side away from the slide groove, the transmission section is meshed with the sliding member for transmission, and the rotation of the transmission section can cause the sliding member to move linearly so that the sliding member can drill into the soil.

[0011] In some embodiments of the highway bored pile construction device, the construction device further includes a rotating handle, and the rotating handle is detachably connected to the force applying end.

[0012] In some embodiments of the highway bored pile construction device, the size of the end of the cone head close to the ground-boring nail rod is larger than the size of the ground-boring nail rod to form a stepped surface.

[0013] In some embodiments of the highway bored pile construction device, the number of the hydraulic components, the ground drilling nails and the first through holes are all multiple, each of the hydraulic components is arranged around the circumference of the column, and each of the ground drilling nails and each of the first through holes are arranged in a one-to-one correspondence with each of the hydraulic components.

[0014] In some embodiments of the highway bored pile construction device, a plurality of connection holes are opened on the force transmission plate along its circumference, each of the connection holes is used for inserting the vertical reinforcement of the reinforcement cage, and the connection holes are interference fit with the vertical reinforcement.

[0015] Implementing the embodiments of the present invention will have at least the following beneficial effects: The above-mentioned highway bored pile construction device has the technical effect of limiting the floating of the steel cage. Specifically, the receiving tube and the structural parts installed on the receiving tube of the present invention can be hoisted into the reverse drilled hole together with the steel cage, or can be placed at the bottom of the drilled hole in other ways. The annular hoop at the bottom of the steel cage can be clamped between the first clamping claw and the force transmission plate by the first clamping claw and the first elastic member. After the receiving tube is placed at the bottom of the drilled hole, the steel cage will continue to be lowered, which will cause the force transmission plate to move downward to achieve the effect of squeezing the hydraulic component. After the hydraulic component is squeezed, it will discharge liquid to prompt the drilling nail to spirally drill into the ground, which plays the role of fixing the entire receiving tube and the structural parts installed on the receiving tube. In this way, during the grouting process, the floating of the steel cage will be limited by the first clamping claw and the drilling nail and then the entire receiving tube and the structural parts thereon. The gravity effect during the lowering of the steel cage is used to fix the receiving tube and the ground, and to clamp the steel cage, thereby achieving the effect of limiting the floating of the steel cage. Moreover, since it is arranged at the bottom position, it is not easy to tilt. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 A schematic diagram of the structural connection of a construction device placed in a borehole in one embodiment; Figure 2 A schematic diagram of the structure of a construction device in one embodiment; Figure 3 for Figure 2 A partial structural schematic diagram of the construction device shown; Figure 4 A schematic diagram of the structure of a chuck structure in one embodiment; Figure 5 A top view of a chuck structure in one embodiment; Figure 6 for Figure 5 Sectional view of the AA section; Figure 7 Schematic diagram of the structure of a ground drilling nail in one embodiment.

[0018] in: 1. Chuck structure; 11. Receiving tube; 111. Post; 112. Clamping part; 113. Sliding block; 114. First through hole; 115. Third through hole; 12. First clamping claw; 13. First elastic member; 14. Force transmission plate; 141. Connecting hole; 15. Hydraulic assembly; 151. Cylinder; 152. Hydraulic rod; 153. Second through hole; 16. Ground drilling nail; 161. Rod; 162. Cone head; 163. Guide groove; 17. Expansion block; 21. guide column; 211. slide groove; 22. second claw; 23. second elastic member; 24. rotating member; 25. sliding member; 26. rotating handle; 100, drilling hole; 101, placing groove; 200, steel cage; 201, vertical reinforcement; 202, annular hoop. DETAILED DESCRIPTION

[0019] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. Preferred embodiments of the present invention are provided in the drawings. However, the present invention can be implemented in many other different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0020] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present invention belongs. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0022] Combine the following Figure 1-7 As shown, the construction device of the present invention is explained in detail.

[0023] In an embodiment of a construction device for bored piles 100 for highway, the construction device includes a receiving tube 11, a force transmission disc 14, a hydraulic assembly 15, a ground nail 16, a plurality of first clamping claws 12 and a plurality of first elastic members 13. The receiving tube 11 is placed at the bottom of the borehole 100, and a column 111 extending axially along the receiving tube 11 is provided at the center of the bottom of the receiving tube 11, and a plurality of clamping parts 112 are provided on the inner wall of the receiving tube 11. The plurality of first clamping claws 12 are connected to the side wall of the column 111 in a circumferential rotational direction along the column 111. The plurality of first elastic members 13 can correspond one by one so that each first clamping claw 12 has a tendency to abut against each clamping part 112. The force transmission disc 14 is sleeved on the column 111 and is located between the rotational connection between the first clamping claw 12 and the column 111 and the bottom of the receiving tube 11, and the force transmission disc 14 can slide in the receiving tube 11 relative to the column 111. The hydraulic assembly 15 is connected to the bottom of the receiving tube 11 and is located between the force transmission disc 14 and the bottom of the receiving tube 11. The hydraulic assembly 15 has a force-bearing end and an output end. The force transmission disc 14 can apply force to the force-bearing end during the sliding process toward the hydraulic assembly 15, so that the liquid in the hydraulic assembly 15 flows toward the output end. The ground drilling nail 16 has a cone head 162 with a thread (not shown in the figure). The bottom of the receiving tube 11 is provided with a first through hole 114 penetrating therethrough. The output end of the hydraulic assembly 15 is provided with a second through hole 153 connected to the first through hole 114. The first through hole 114 is connected to the second through hole 153 to form a receiving hole. The ground drilling nail 16 is at least partially received in the receiving hole. A spiral guide groove 163 is provided on one of the ground drilling nail 16 and the inner wall of the receiving hole, and a guide block (not shown in the figure) extending into the guide groove 163 is provided on the other, so that the ground drilling nail 16 can rotate and extend when pushed by the liquid flowing out from the output end.

[0024] In this embodiment, the receiving tube 11 and the structural member installed on the receiving tube 11 can be hoisted into the reverse borehole 100 together with the steel cage 200, or placed at the bottom of the borehole 100 in other ways. The annular hoop 202 at the bottom of the steel cage 200 can be clamped between the first clamping claw 12 and the force transmission disk 14 through the first clamping claw 12 and the first elastic member 13. After the receiving tube 11 is placed at the bottom of the borehole 100, the steel cage 200 continues to be lowered, which will cause the force transmission disk 14 to move downward to achieve the effect of squeezing the hydraulic component 15, and the hydraulic component 15 is After squeezing, liquid will be discharged to prompt the drilling nail 16 to spirally drill into the ground, thereby fixing the entire receiving tube 11 and the structural parts installed on the receiving tube 11 as a whole. In this way, during the grouting process, the floating of the steel cage 200 will be restricted by the first claw 12 and the drilling nail 16 and then the entire receiving tube 11 and the structural parts thereon, thereby achieving the effect of restricting the floating of the steel cage 200. The gravity effect during the lowering of the steel cage 200 is utilized to not only fix the receiving tube 11 to the ground, but also clamp the steel cage 200. Moreover, since it is arranged at the bottom, it is not easy to tilt.

[0025] Specifically, the hydraulic assembly 15 can adopt the same structural components as the jack, including a cylinder 151 and a hydraulic rod 152, the force-bearing end is the end of the hydraulic rod 152, and the output end is the liquid flow channel opened on the cylinder 151, that is, the second through hole 153, so as to bear the weight of the steel cage 200. The first elastic member 13 can be a torsion spring, which is sleeved on the rotation connection between the first clamping claw 12 and the column 111, such as the rotating shaft. The first clamping claw 12 can be abutted against the clamping portion 112 by the action of the torsion spring, so that after the annular hoop 202 of the steel cage 200 opens the first clamping claw 12, the first clamping claw 12 can also automatically rebound to the corresponding position and clamp the annular hoop 202.

[0026] In addition, it can be understood that the spiral angle of the spiral guide groove 163 is different from the tight threads on common screws or bolts. It can be understood as stretching the tight threads axially to increase the pitch and reduce the number of turns, or it can be understood as opening a strip groove on the side wall of a slender rod, twisting the slender rod around the central axis by half a circle, one circle, or other small number of circles to turn the strip groove into a spiral groove.

[0027] It should be noted that, initially, the hydraulic assembly 15 may abut against the force transfer disc 14, thereby supporting the force transfer disc 14. The force transfer disc 14 may be an annular structure, and in order to improve the load-bearing capacity of the force transfer disc 14, it may be made of a material with strong load-bearing capacity and the thickness of the force transfer disc 14 may be increased.

[0028] In addition, it should be noted that the borehole 100 is not a through hole as commonly referred to, but a hole drilled in the construction field, because the borehole 100 has a hole bottom, i.e., a pit bottom.

[0029] In an embodiment of a construction device for bored piles of highway 100, a plurality of placement grooves 101 are provided on the inner wall of the borehole 100, each placement groove 101 is arranged circumferentially along the borehole 100, and the bottom of the placement groove 101 extends to the bottom and the opening of the borehole 100 along the extension direction of the borehole 100, and the construction device further includes a guide column 21, which is received in the placement groove 101. Each guide column 21 is provided with a slide groove 211 on one side facing the borehole 100, and a slider 113 that can extend into each slide groove 211 one by one is provided on the outer wall of the receiving tube 11.

[0030] In this embodiment, by setting the guide column 21, the slide groove 211 on the guide column 21 can cooperate with the slider 113 on the receiving tube 11, so that the receiving tube 11 can be placed at the bottom of the drill hole 100 more accurately, avoiding the placement position of the receiving tube 11 from being offset and affecting the use effect.

[0031] In an embodiment of a highway bored pile construction device 100, the construction device also includes a plurality of expansion blocks 17, a plurality of third through holes 115 are opened at the sliding path of the receiving tube 11 corresponding to the force transmission disk 14, and each expansion block 17 is rotatably connected to the inner wall of each third through hole 115 one by one. The end size of the expansion block 17 away from the first claw 12 is larger than the end size close to the first claw 12. When the force transmission disk 14 approaches the bottom of the receiving tube 11, each expansion block 17 can be abutted against the bottom of the slide groove 211 one by one.

[0032] In this embodiment, specifically, the expansion block 17 can be a wedge-shaped block or a triangular block-shaped structural member. By such an arrangement, when the force transmission disc 14 is pushed down by the steel cage 200, the force transmission disc 14 can push out the expansion block 17 while pushing out the ground drilling nail 16 through the hydraulic component 15. After being pushed out, the expansion block 17 can be tightly abutted against the bottom of the slide groove 211 to form an effect similar to that of an expansion screw, thereby further improving the fixing effect of the receiving tube 11 and the structural members thereon as a whole at the bottom.

[0033] In an embodiment of a highway drilling 100 cast-in-place pile construction device, the construction device also includes a plurality of clamping assemblies, each clamping assembly is installed one-to-one at the bottom of each slide groove 211, and is located at the end away from the bottom of the receiving tube 11, the clamping assembly includes a plurality of second claws 22 and a plurality of second elastic members 23, each second claw 22 is rotatably connected to the bottom of the slide groove 211 along the extension direction of the slide groove 211, each second elastic member 23 is used to correspond one-to-one to make each second claw 22 have a tendency to reset, and when the steel cage 200 is placed in the drilling hole 100, the annular hoop 202 thereon can make the second claw 22 rotate clockwise.

[0034] In this embodiment, by setting a clamping assembly at the end away from the bottom of the receiving tube 11, the receiving tube 11 and its structural parts can cooperate to form a whole that clamps the steel cage 200 at the top and bottom. The coordinated rotation and rebound method of the second clamping claw 22 and the second elastic member 23 is the same as that of the first clamping claw 12 and the first elastic member 13. After being pressed by the annular hoop 202 on the steel cage 200, they rebound and elastically clamp, thereby further preventing floating.

[0035] The first elastic member 13 and the second elastic member 23 can both be torsion springs, or ordinary springs can be arranged below the first claw 12 and the second claw 22, so that the first elastic member 13 and the second elastic member 23 can be compressed during the lowering process of the steel cage 200 from top to bottom.

[0036] In an embodiment of a highway bored pile construction device 100, the construction device further comprises a plurality of limit members, each of which is disposed one by one on the rotation path of each second clamping claw 22 and is used to limit the second clamping claw 22 from rotating counterclockwise.

[0037] In this embodiment, specifically, the stopper may be a plate-shaped structural member, which is arranged above the second clamping jaw to prevent the second clamping jaw 22 from rotating counterclockwise, that is, rotating upward, so that it can play a limiting role above when the steel cage 200 is to float. The stopper may be an L-shaped block structural member, with an opening facing the second clamping jaw 22.

[0038] In combination with the previous embodiment, it should be noted that, in the process of the receiving tube 11 entering the borehole 100 from top to bottom, the second claw 22 will also be caused to rotate and rebound. In order to avoid collision and interference jamming, the depth of the slide groove 211 can be appropriately increased, and the slider 113 may not extend to the bottom of the slide groove 211 to avoid the second claw 22 and the limit member being on the path of the slider 113.

[0039] In an embodiment of a construction device for bored piles 100 for highways, a receiving space is provided in the end of the guide column 21 away from the bottom of the receiving tube 11. The construction device further comprises a rotating member 24 and a sliding member 25, the rotating member 24 is rotatably connected to the guide column 21, the rotating member 24 has a transmission section received in the receiving space, and a force-applying end extending from one end away from the bottom of the receiving tube 11, a part of the sliding member 25 is received in the receiving space, and another part extends from a side away from the slide groove 211, the transmission section is meshed with the sliding member 25 for transmission, and the rotation of the transmission section can cause the sliding member 25 to move linearly, so that the sliding member 25 can be drilled into the soil.

[0040] In this embodiment, specifically, the transmission section and the sliding member 25 can be matched in a gear rack manner, and teeth are provided on a circle of side walls of the transmission section. By arranging the rotating member 24 and the sliding member 25, it is convenient for the staff to perform reinforcement and stabilization operations on the ground, and the stability of the overall construction device is further improved.

[0041] In an embodiment of a highway bored pile construction device 100, the construction device further comprises a rotating handle 26, and the rotating handle 26 is detachably connected to the force-applying end.

[0042] In this embodiment, specifically, the rotating handle 26 can form a detachable fit with the force-applying end of the rotating member 24 by inserting a bolt, and can be connected by a detachable key. The detachable manner allows the rotating handle 26 to be removed and reused after use.

[0043] In an embodiment of a bored pile construction device for highway 100 , the end of the cone head 162 close to the rod 161 of the ground drilling nail 16 is larger than the rod 161 of the ground drilling nail 16 to form a stepped surface.

[0044] In this embodiment, specifically, the cone head 162 and the stem 161 of the ground drilling nail 16 can form an arrow-like shape, so that after being screwed into the bottom of the borehole 100, the step surface can also play a role in the connection stability between the ground drilling nail 16 and the ground.

[0045] In an embodiment of a highway bored pile construction device 100, the number of hydraulic components 15, ground drilling nails 16 and first through holes 114 are all multiple, each hydraulic component 15 is arranged circumferentially along the column 111, and each ground drilling nail 16 and each first through hole 114 are arranged one-to-one with each hydraulic component 15.

[0046] In this embodiment, by setting up a plurality of hydraulic components 15, the support force provided during load-bearing can be uniform and the load-bearing capacity can be provided. Specifically, two, three or four components can be set for cost considerations. Correspondingly, a plurality of ground drilling nails 16 are set, which can also improve the stability of the connection between the receiving tube 11 and the structural parts thereon as a whole and the bottom of the borehole 100, and further improve the effect of preventing the steel cage 200 from floating up.

[0047] In an embodiment of a highway bored pile construction device 100, a plurality of connection holes 141 are opened on the force transfer plate 14 along its circumference, each connection hole 141 is used for inserting the vertical reinforcement 201 of the reinforcement cage 200, and the connection hole 141 and the vertical reinforcement 201 are interference fit.

[0048] In this embodiment, by providing a connection hole 141 that can be interference-fitted with the vertical rib 201, after reaching the bottom of the drill hole 100, the continued sinking of the steel cage 200 will further allow the vertical rib 201 to be tightly inserted into the connection hole 141. The connection hole 141 can be a tapered hole with a large upper opening and a small lower opening. The interference fit will also allow the weight of the force transmission disk 14 to be added to the steel cage 200, thereby further preventing it from floating. In addition, it is also convenient to hoist the receiving tube 11 and the structural parts arranged on the tube together with the steel cage 200.

[0049] In combination with the previous embodiments, the overall construction process of the present invention is explained. For the convenience of description, the receiving tube 11 and the structural parts thereon are summarized as a chuck structure 1. When used in a light-weight steel cage 200, when it is on the ground, the chuck structure 1 can be first clamped at the bottom of the steel cage 200. If there is a connecting hole 141, it can be inserted into the connecting hole 141. At the same time, a placement groove 101 is opened on the side wall of the borehole 100 through a drilling rig, and the guide column 21 is placed in the placement groove 101. During hoisting, the steel cage 200 and the chuck structure 1 together guide the chuck structure 1 to the bottom of the borehole 100 through the cooperation of the slide groove 211 and the slider 113, and then further or gradually unload the process of hoisting the steel cage 200. Under the action of its own gravity, the steel cage 200 further sinks to discharge the liquid from the hydraulic assembly 15 and extend the expansion block 17. It should be noted that when the weight of the steel cage 200 is large, that is, the steel cage 200 is long as a whole, the chuck structure 1 can be placed at the bottom of the drill hole 100 first, and the chuck structure 1 can be slowly lowered under the guidance of the slide groove 211 and the slider 113 by a light weight structural member such as an annular structural member through a hoisting method.

[0050] In addition, it should be noted that in the construction field, for the sake of safety priority, by applying the construction device of the present invention, a pile body of better quality can be obtained after grouting, which increases the service life of the pile body, is more in line with long-term economic benefits, and is conducive to avoiding personal and public property losses due to quality.

[0051] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0052] The above embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A highway bored pile construction device, characterized in that: The construction device comprises: A receiving tube is placed at the bottom of the drill hole, a column extending along the axial direction of the receiving tube is provided at the center of the bottom of the receiving tube, and a plurality of clamping parts are provided on the inner wall of the receiving tube; A plurality of first claws are connected to the side wall of the column in a circumferential rotational manner along the column; A plurality of first elastic members can correspond one by one to make each of the first claws have a tendency to abut against each of the clamping portions; A force transmission disc is sleeved on the column and is located between the first claw and the rotation connection of the column and the bottom of the receiving tube. The force transmission disc can slide in the receiving tube relative to the column. A hydraulic assembly is connected to the bottom of the receiving tube and is located between the force transmission disc and the bottom of the receiving tube. The hydraulic assembly has a force receiving end and an output end. The force transmission disc can apply force to the force receiving end during the sliding process toward the hydraulic assembly, so that the liquid in the hydraulic assembly flows toward the output end. A ground drilling nail has a conical head with a thread, a first through hole is formed at the bottom of the receiving tube, a second through hole connected to the first through hole is formed at the output end of the hydraulic component, the first through hole is connected to the second through hole to form a receiving hole, the ground drilling nail is at least partially received in the receiving hole, one of the ground drilling nail and the inner wall of the receiving hole is provided with a spiral guide groove, and the other is provided with a guide block extending into the guide groove, so that the ground drilling nail can be rotated and extended when pushed by the liquid flowing out from the output end.

2. The highway bored pile construction device according to claim 1, characterized in that: The inner wall of the borehole is provided with a plurality of placement grooves, each of which is arranged circumferentially along the borehole, and the bottom of the placement groove extends along the extension direction of the borehole to the bottom and the opening of the borehole, and the construction device further includes a guide column, which is received in the placement groove; A slide groove is formed on one side of each guide column facing the inner side of the bore hole, and a sliding block which can extend into each slide groove in a one-to-one correspondence is formed on the outer side wall of the receiving tube.

3. The highway bored pile construction device according to claim 2, characterized in that: The construction device also includes a plurality of expansion blocks. The receiving tube is provided with a plurality of third through holes corresponding to the sliding path of the force transmission disk. The expansion blocks are rotatably connected to the inner walls of the third through holes one by one. The end size of the expansion block away from the first claw is larger than the end size close to the first claw. When the force transmission disk approaches the bottom of the receiving tube, the expansion blocks can be abutted against the bottom of the slide groove one by one.

4. The highway bored pile construction device according to claim 2, characterized in that: The construction device also includes a plurality of clamping assemblies, each of which is installed one-to-one at the bottom of each of the slide grooves and is located at the end away from the bottom of the receiving tube. The clamping assemblies include a plurality of second claws and a plurality of second elastic members. Each of the second claws is rotatably connected to the bottom of the slide groove along the extension direction of the slide groove. Each of the second elastic members is used to correspond one-to-one to make each of the second claws have a tendency to reset. When the steel cage is placed in the drilling process, the annular hoop on it can make the second claw rotate clockwise.

5. The highway bored pile construction device according to claim 4, characterized in that: The construction device also includes a plurality of limit members, each of which is arranged one by one on the rotation path of each second clamping claw and is used to limit the counterclockwise rotation of the second clamping claw.

6. The highway bored pile construction device according to claim 2, characterized in that: An accommodating space is provided in the end of the guide column away from the bottom of the receiving tube; The construction device also includes a rotating member and a sliding member, the rotating member is rotatably connected to the guide column, the rotating member has a transmission section accommodated in the accommodating space, and a force-applying end portion extending from one end away from the bottom of the accommodating tube, a portion of the sliding member is accommodated in the accommodating space, and the other portion extends from a side away from the slide groove, the transmission section is meshed with the sliding member for transmission, and the rotation of the transmission section can cause the sliding member to move linearly so that the sliding member can drill into the soil.

7. The highway bored pile construction device according to claim 6, characterized in that: The construction device also includes a rotating handle, which is detachably connected to the force-applying end.

8. The highway bored pile construction device according to claim 1, characterized in that: The size of the end of the cone head close to the ground-boring nail rod is larger than the size of the ground-boring nail rod to form a stepped surface.

9. The highway bored pile construction device according to claim 1, characterized in that: There are multiple hydraulic components, multiple ground-boring nails and multiple first through holes. Each hydraulic component is arranged around the column. Each ground-boring nail and each first through hole is arranged in one-to-one correspondence with each hydraulic component.

10. The highway bored pile construction device according to any one of claims 1 to 9, characterized in that: The force transmission disc is provided with a plurality of connection holes along its circumference, each of the connection holes is used for inserting the vertical reinforcement of the reinforcement cage, and the connection holes are interference fit with the vertical reinforcement.

Images