A construction device for highway bored cast-in-place piles

Abstract

The present invention discloses a construction device for highway bored cast-in-place piles. The construction device includes a receiving cylinder, a force transmission disc, a hydraulic component, a ground anchor, a plurality of first clamping claws and a plurality of first elastic members; the receiving cylinder is placed at the bottom of the drilling hole, a column extending along the axial direction of the receiving cylinder is provided at the center of the bottom of the receiving cylinder, and a plurality of clamping portions are provided on the inner wall of the receiving cylinder; the plurality of first clamping claws are rotatably connected to the side wall of the column along the circumferential direction of the column; the plurality of first elastic members can respectively make each first clamping claw have a tendency to abut against each clamping portion; the force transmission disc is sleeved on the column; the hydraulic component is connected to the bottom of the receiving cylinder and is located between the force transmission disc and the bottom of the receiving cylinder, the hydraulic component has a force receiving end and an output end, and the force transmission disc can apply a force to the force receiving end during the sliding process towards the hydraulic component; the ground anchor has a tapered head with threads, and the ground anchor can rotate and extend when pushed by the liquid flowing out from the output end. The present invention has the technical effect of restricting the floating of the steel reinforcement cage.

Description

Technical Field

[0001] The present invention relates to the technical field of bored cast-in-place pile construction, and particularly relates to a construction device for bored cast-in-place piles on highways. 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 bored hole is first dug, and then the steel reinforcement cage is placed into the bored hole and grouted. However, during the grouting process, the steel reinforcement cage may float, affecting the grouting effect.

[0003] When the top end of the steel reinforcement cage is close to the ground, the existing construction method is to fix the top end of the steel reinforcement cage to the ground to prevent the steel reinforcement cage from floating. However, the top fixing has relatively poor control effect on the verticality of the steel reinforcement cage in the hole, and the steel reinforcement cage is prone to tilt, affecting the mechanical properties of the pile body. Summary of the Invention

[0004] In view of this, the present invention provides a construction device for bored cast-in-place piles on highways, which is used to solve the technical problems of the floating of the steel reinforcement cage during the grouting process and the poor effect of the existing fixing method in preventing the floating of the steel reinforcement cage.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is as follows:

[0006] A construction device for bored cast-in-place piles on highways, the construction device comprising:

[0007] A receiving cylinder, placed at the bottom of the bored hole, a column extending along the axial direction of the receiving cylinder is provided at the center of the bottom of the receiving cylinder, and a plurality of clamping parts are provided on the inner wall of the receiving cylinder;

[0008] A plurality of first clamping claws, rotatably connected to the side wall of the column along the circumferential direction of the column;

[0009] A plurality of first elastic members, each of which can make each of the first clamping claws have a tendency to abut against each of the clamping parts;

[0010] A force transmission disk, sleeved on the column and located between the rotational connection of the first clamping claws and the column and the bottom of the receiving cylinder, and the force transmission disk can slide relative to the column in the receiving cylinder;

[0011] A hydraulic component, connected to the bottom of the receiving cylinder and located between the force transmission disk and the bottom of the receiving cylinder, the hydraulic component has a force receiving end and an output end, and when the force transmission disk slides towards the hydraulic component, it can apply a force to the force receiving end, so that the liquid in the hydraulic component flows towards the output end;

[0012] The earth-boring nail has a tapered head with threads. A through first through-hole is provided at the bottom of the receiving cylinder. A second through-hole communicating with the first through-hole is provided at the output end of the hydraulic assembly. The first through-hole and the second through-hole communicate to form a receiving hole. At least a part of the earth-boring nail is received in the receiving hole. A spiral guiding groove is provided on one of the earth-boring nail and the inner wall of the receiving hole, and a guiding block extending into the guiding groove is provided on the other, so that the earth-boring nail can rotate and extend when pushed by the liquid flowing out from the output end.

[0013] In some embodiments of the highway bored cast-in-place pile construction device, a plurality of placement grooves are provided on the inner wall of the borehole. Each placement groove is arranged circumferentially around the borehole. The bottom of the placement groove extends along the extending direction of the borehole to the bottom and the orifice of the borehole. The construction device further includes guiding columns received in the placement grooves.

[0014] A sliding groove is provided on one side of each guiding column facing the inside of the borehole. A sliding block capable of extending into each sliding groove in a one-to-one correspondence is provided on the outer side wall of the receiving cylinder.

[0015] In some embodiments of the highway bored cast-in-place pile construction device, the construction device further includes a plurality of expansion blocks. A plurality of third through-holes are provided in the receiving cylinder corresponding to the sliding paths of the force-transmitting disks. Each expansion block is rotatably connected to the inner wall of each third through-hole in a one-to-one correspondence. The dimension of the end of the expansion block away from the first claw is larger than the dimension of the end thereof close to the first claw. When the force-transmitting disk approaches the bottom of the receiving cylinder, each expansion block can be abutted against the bottom of the sliding groove in a one-to-one correspondence.

[0016] In some embodiments of the highway bored cast-in-place pile construction device, the construction device further includes a plurality of clamping assemblies. Each clamping assembly is installed at the bottom of each sliding groove in a one-to-one correspondence and is located at the end away from the bottom of the receiving cylinder. The clamping assembly includes a plurality of second claws and a plurality of second elastic members. Each second claw is rotatably connected to the bottom of the sliding groove along the extending direction of the sliding groove. Each second elastic member is used to make each second claw have a tendency of resetting in a one-to-one correspondence. When the steel reinforcement cage is placed into the borehole, the annular hoop thereon can make the second claws rotate clockwise.

[0017] In some embodiments of the highway bored cast-in-place pile construction device, the construction device further includes a plurality of limiting members. Each limiting member is provided on the rotation path of each second claw in a one-to-one correspondence and is used to limit the counterclockwise rotation of the second claw.

[0018] In some embodiments of the highway bored cast-in-place pile construction device, a receiving space is provided inside the end of the guiding column away from the bottom of the receiving cylinder.

[0019] The construction device further includes a rotating member and a sliding member. The rotating member is rotatably connected to the guiding column. The rotating member has a transmission section received in the accommodating space and a force - applying end portion extending from one end away from the bottom of the accommodating cylinder. A part of the sliding member is received in the accommodating space and the other part extends from the side away from the sliding groove. The transmission section meshes with the sliding member for transmission. The rotation of the transmission section can linearly move the sliding member so that the sliding member drills into the soil.

[0020] In some embodiments of the highway bored cast - in - place pile construction device, the construction device further includes a rotating handle, and the rotating handle is detachably connected to the force - applying end portion.

[0021] In some embodiments of the highway bored cast - in - place pile construction device, the end portion of the conical head close to the ground - drilling nail rod portion has a size larger than that of the ground - drilling nail rod portion to form a stepped surface.

[0022] In some embodiments of the highway bored cast - in - place 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 in a circumferential ring along the column. Each of the ground - drilling nails and each of the first through - holes are arranged in one - to - one correspondence with each of the hydraulic components.

[0023] In some embodiments of the highway bored cast - in - place pile construction device, a plurality of connection holes are formed along the circumferential direction of the force - transmitting disc. Each of the connection holes is used for inserting the vertical bars of the steel reinforcement cage, and the connection holes are in interference fit with the vertical bars.

[0024] Implementing the embodiments of the present invention will at least have the following beneficial effects:

[0025] The above - mentioned highway bored cast - in - place pile construction device has the technical effect of restricting the upward floating of the steel reinforcement cage. Specifically, the accommodating cylinder of the present invention and the structural members installed on the accommodating cylinder can be hoisted into the reverse drilling hole together with the steel reinforcement cage, or can be placed at the bottom of the drilling hole by other means first. The annular hoop at the bottom of the steel reinforcement cage can be clamped between the first claw and the force - transmitting disc through the first claw and the first elastic member. After the accommodating cylinder is placed at the bottom of the drilling hole, when the steel reinforcement cage continues to be lowered, the force - transmitting disc will move downward to achieve the effect of squeezing the hydraulic components. After being squeezed, the hydraulic components will discharge liquid to promote the ground - drilling nails to spiral into the ground, playing the role of fixing the overall accommodating cylinder and the structural members installed on the accommodating cylinder. In this way, during the grouting process, the upward floating of the steel reinforcement cage will be restricted by the first claw and the ground - drilling nails and then the overall accommodating cylinder and its structural members. Utilizing the gravity effect during the lowering process of the steel reinforcement cage, it not only realizes the fixation of the accommodating cylinder to the ground but also plays the role of clamping the steel reinforcement cage, thereby achieving the effect of restricting the upward floating of the steel reinforcement cage, and because it is set at the bottom position, it is not easy to tilt. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] 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 the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0027] Figure 1 Structural connection schematic diagram of the construction device placed in the drill hole in one embodiment;

[0028] Figure 2 Structural schematic diagram of the construction device in one embodiment;

[0029] Figure 3 For Figure 2 Partial structural schematic diagram of the construction device shown;

[0030] Figure 4 Structural schematic diagram of the chuck structure in one embodiment;

[0031] Figure 5 Top view of the chuck structure in one embodiment;

[0032] Figure 6 For Figure 5 Cross-sectional view of part A-A in;

[0033] Figure 7 Structural schematic diagram of the ground drill nail in one embodiment.

[0034] Wherein:

[0035] 1. Chuck structure; 11. Receiving cylinder; 111. Column; 112. Clamping part; 113. Slide block; 114. First through hole; 115. Third through hole; 12. First clamping jaw; 13. First elastic member; 14. Force transmission plate; 141. Connection hole; 15. Hydraulic component; 151. Cylinder body; 152. Hydraulic rod; 153. Second through hole; 16. Ground drill nail; 161. Rod part; 162. Cone head; 163. Guide groove; 17. Expansion block;

[0036] 21. Guide post; 211. Slide groove; 22. Second clamping jaw; 23. Second elastic member; 24. Rotating member; 25. Sliding member; 26. Rotating handle;

[0037] 100. Drill hole; 101. Placing groove; 200. Steel reinforcement cage; 201. Vertical reinforcement; 202. Circular hoop. Specific embodiments

[0038] To facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Preferred embodiments of the present invention are shown 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, these embodiments are provided to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0039] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present invention belongs. The terms used in the specification of the present invention herein 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.

[0041] The following is combined with Figure 1-7 as shown, the construction device of the present invention will be explained in detail.

[0042] In an embodiment of a construction device for bored cast-in-place piles on a road, the construction device includes a receiving cylinder 11, a force transmission disk 14, a hydraulic component 15, a ground anchor 16, a plurality of first clamping claws 12, and a plurality of first elastic members 13. The receiving cylinder 11 is placed at the bottom of the borehole 100. A column 111 extending along the axial direction of the receiving cylinder 11 is provided at the center of the bottom of the receiving cylinder 11. A plurality of clamping portions 112 are provided on the inner wall of the receiving cylinder 11. The plurality of first clamping claws 12 are rotatably connected to the side wall of the column 111 along the circumferential direction of the column 111. The plurality of first elastic members 13 can respectively make each first clamping claw 12 tend to abut against each clamping portion 112. The force transmission disk 14 is sleeved on the column 111 and is located between the rotational connection of the first clamping claw 12 and the column 111 and the bottom of the receiving cylinder 11. The force transmission disk 14 can slide relative to the column 111 within the receiving cylinder 11. The hydraulic component 15 is connected to the bottom of the receiving cylinder 11 and is located between the force transmission disk 14 and the bottom of the receiving cylinder 11. The hydraulic component 15 has a force-receiving end and an output end. During the sliding process of the force transmission disk 14 towards the hydraulic component 15, it can apply a force to the force-receiving end, so that the liquid in the hydraulic component 15 flows towards the output end. The ground anchor 16 has a tapered head 162 with threads (not shown in the figure). A through first through hole 114 is provided at the bottom of the receiving cylinder 11. A second through hole 153 communicating with the first through hole 114 is provided at the output end of the hydraulic component 15. The first through hole 114 and the second through hole 153 communicate to form a receiving hole. At least a part of the ground anchor 16 is received in the receiving hole. A spiral guide groove 163 is provided on one of the ground anchor 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 anchor 16 can rotate and extend when pushed by the liquid flowing out from the output end.

[0043] In this embodiment, the receiving cylinder 11 of this embodiment and the structural members installed on the receiving cylinder 11 can be hoisted into the reverse borehole 100 together with the steel reinforcement cage 200, or can be placed at the bottom of the borehole 100 by other means first. The annular hoop 202 at the bottom of the steel reinforcement cage 200 can be clamped between the first clamping claws 12 and the force transmission disk 14 through the first clamping claws 12 and the first elastic members 13. After the receiving cylinder 11 is placed at the bottom of the borehole 100, during the continuous lowering process of the steel reinforcement cage 200, the force transmission disk 14 will move downward to achieve the effect of squeezing the hydraulic component 15. After being squeezed, the hydraulic component 15 will discharge liquid to promote the spiral drilling of the ground anchor 16 into the ground, achieving the effect of fixing the overall receiving cylinder 11 and the structural members installed on the receiving cylinder 11. In this way, during the grouting process, the floating of the steel reinforcement cage 200 will be restricted by the first clamping claws 12 and the ground anchor 16 and thus the overall receiving cylinder 11 and its structural members, so as to achieve the effect of restricting the floating of the steel reinforcement cage 200. Utilizing the gravity during the lowering process of the steel reinforcement cage 200, both the fixation of the receiving cylinder 11 to the ground and the clamping of the steel reinforcement cage 200 are realized, and since it is set at the bottom position, it is not easy to tilt.

[0044] 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.

[0045] 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.

[0046] 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.

[0047] 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.

[0048] 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.

[0049] 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.

[0050] In an embodiment of a construction device for bored cast-in-place piles on a highway, the construction device further includes a plurality of expansion blocks 17. The receiving cylinder 11 is correspondingly provided with a plurality of third through holes 115 at the sliding path of the force transmission plate 14. Each expansion block 17 is rotatably connected to the inner wall of each third through hole 115 one by one. The dimension of the end of the expansion block 17 away from the first claw 12 is larger than the dimension of the end thereof close to the first claw 12. When the force transmission plate 14 approaches the bottom of the receiving cylinder 11, each expansion block 17 can be correspondingly abutted against the bottom of the chute 211 one by one.

[0051] In this embodiment, specifically, the expansion block 17 can be a wedge-shaped block or a triangular block structure member. By such a setting, during the process of the force transmission plate 14 being pushed down by the steel reinforcement cage 200, the force transmission plate 14 can push out the expansion block 17 while pushing out the ground drilling nail 16 through the hydraulic component 15. After the expansion block 17 is pushed out, it can tightly abut against the bottom of the chute 211 to form an effect similar to that of an expansion screw, further improving the overall fixing effect of the receiving cylinder 11 and its upper structural members at the bottom.

[0052] In an embodiment of a construction device for bored cast-in-place piles on a highway, the construction device further includes a plurality of clamping components. Each clamping component is correspondingly installed at the bottom of each chute 211 and is located at the end away from the bottom of the receiving cylinder 11. The clamping component 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 chute 211 along the extending direction of the chute 211. Each second elastic member 23 is used to make each second claw 22 have a tendency to reset one by one. During the process of the steel reinforcement cage 200 being placed into the borehole 100, the annular hoop 202 thereon can make the second claw 22 rotate clockwise.

[0053] In this embodiment, by providing the clamping component at the end away from the bottom of the receiving cylinder 11, it can cooperate with the overall formed by the receiving cylinder 11 and its structural members to form an effect of clamping the steel reinforcement cage 200 both above and below. The cooperation rotation and rebound mode of the second claw 22 and the second elastic member 23 is the same as that of the first claw 12 and the first elastic member 13, both of which rebound and elastically clamp after being pressed by the annular hoop 202 on the steel reinforcement cage 200, playing an effect of further preventing floating.

[0054] Both the first elastic member 13 and the second elastic member 23 can be torsion springs, or can also be ordinary springs arranged below the first claw 12 and the second claw 22. During the process of the steel reinforcement cage 200 being lowered from top to bottom, the first elastic member 13 and the second elastic member 23 can be compressed.

[0055] In an embodiment of a construction device for bored cast-in-place piles on a highway, the construction device further includes a plurality of limiting members. Each limiting member is correspondingly arranged on the rotation path of each second claw 22 and is used to limit the counterclockwise rotation of the second claw 22.

[0056] In this embodiment, specifically, the limiting member may be a plate-shaped structural member disposed above the second jaw to prevent the second jaw 22 from rotating counterclockwise, i.e., upward rotation, so as to play a limiting role above when the steel reinforcement cage 200 is to float upward. The limiting member may be an L-shaped block-shaped structural member with an opening facing the second jaw 22.

[0057] In combination with the previous embodiments, it should be noted that during the process of the receiving cylinder 11 entering the drilling hole 100 from top to bottom, it will also cause the rotation and rebound of the second jaw 22. In order to avoid collision and interference jamming, the depth of the chute 211 can be appropriately increased, and the slider 113 may not extend to the bottom of the chute 211 to avoid the second jaw 22 and the limiting member on the path of the slider 113.

[0058] In an embodiment of a construction device for bored cast-in-place piles on a highway drilling hole 100, a receiving space is provided inside the end of the guiding column 21 away from the bottom of the receiving cylinder 11. The construction device further includes a rotating member 24 and a sliding member 25. The rotating member 24 is rotatably connected to the guiding column 21. The rotating member 24 has a transmission section received in the receiving space and a force-applying end portion extending from one end away from the bottom of the receiving cylinder 11. A part of the sliding member 25 is received in the receiving space and the other part extends from the side away from the chute 211. The transmission section is in meshing transmission with the sliding member 25, and the rotation of the transmission section can linearly move the sliding member 25 so that the sliding member 25 drills into the soil.

[0059] In this embodiment, specifically, the cooperation mode between the transmission section and the sliding member 25 may be a gear-rack. Teeth are provided on the side wall of one circle of the transmission section. By providing the rotating member 24 and the sliding member 25, it is convenient for the staff to perform the operation of reinforcement and stability on the ground, and further improves the stability of the overall construction device.

[0060] In an embodiment of a construction device for bored cast-in-place piles on a highway drilling hole 100, the construction device further includes a rotating handle 26, and the rotating handle 26 is detachably connected to the force-applying end portion.

[0061] In this embodiment, specifically, the rotating handle 26 can form a detachable fit with the force-applying end portion of the rotating member 24 by inserting a bolt, and it can be a detachable key connection method. The detachable method allows the rotating handle 26 to be detached and reused after use.

[0062] In an embodiment of a construction device for bored cast-in-place piles on a highway drilling hole 100, the size of the end of the conical head 162 close to the rod portion 161 of the ground anchor 16 is larger than the size of the rod portion 161 of the ground anchor 16 to form a stepped surface.

[0063] In this embodiment, specifically, the conical head 162 and the rod portion 161 of the ground drilling nail 16 can form a shape similar to an arrow. In this way, after being screwed into the bottom of the drilling hole 100, the stepped surface can also play a role in the connection stability between the ground drilling nail 16 and the ground.

[0064] In an embodiment of a construction device for cast-in-place piles in a highway drilling hole 100, the number of the hydraulic components 15, the ground drilling nails 16, and the first through holes 114 are all multiple. Each hydraulic component 15 is arranged circumferentially around the column 111, and each ground drilling nail 16 and each first through hole 114 are arranged in one-to-one correspondence with each hydraulic component 15.

[0065] In this embodiment, by providing a plurality of hydraulic components 15, the supporting force provided during loading can be made uniform, and the loading capacity can be provided. Specifically, for cost considerations, two or three or four can be provided. Correspondingly, providing a plurality of ground drilling nails 16 can also improve the connection stability between the receiving cylinder 11 and its upper structural members as a whole and the bottom of the drilling hole 100, and further improve the effect of preventing the steel reinforcement cage 200 from floating.

[0066] In an embodiment of a construction device for cast-in-place piles in a highway drilling hole 100, a plurality of connection holes 141 are formed along the circumference of the force transmission disk 14. Each connection hole 141 is used for inserting the vertical bars 201 of the steel reinforcement cage 200, and the connection hole 141 is in interference fit with the vertical bars 201.

[0067] In this embodiment, by providing the connection holes 141 that can be in interference fit with the vertical bars 201, after reaching the bottom of the drilling hole 100, the continuous sinking of the steel reinforcement cage 200 will further cause the vertical bars 201 to be tightly inserted into the connection holes 141. The connection holes 141 can be tapered holes with a larger upper opening and a smaller lower opening. The interference fit will also add the weight of the force transmission disk 14 to the steel reinforcement cage 200, thereby further preventing floating. In addition, it is also convenient to hoist the receiving cylinder 11 and the structural members arranged on the cylinder together with the steel reinforcement cage 200.

[0068] Combined with the previous embodiments, the overall construction process of the present invention will be described. For the convenience of description, the receiving cylinder 11 and the structural members thereon are summarized as the chuck structure 1. When applied to the steel reinforcement cage 200 with a small weight, when on the ground, the chuck structure 1 can be first clamped at the bottom of the steel reinforcement cage 200. If there is a connection hole 141, it can be inserted into the connection hole 141. At the same time, a placement groove 101 is opened on the side wall of the drill hole 100 through a drill rig, and the guide post 21 is placed in the placement groove 101. During hoisting, the steel reinforcement cage 200 and the chuck structure 1 together guide the chuck structure 1 to the bottom of the drill hole 100 through the cooperation of the sliding groove 211 and the sliding block 113. Then, during the process of further or gradually unloading the hoisting force of the steel reinforcement cage 200, under the action of the self-gravity of the steel reinforcement cage 200, it further sinks, discharging the liquid of the hydraulic component 15 and causing the expansion block 17 to protrude. It should be noted that when the weight of the steel reinforcement cage 200 is large, that is, when the overall length of the steel reinforcement cage 200 is long, the chuck structure 1 can be first placed at the bottom of the drill hole 100. A small-weight structural member such as an annular structural member can be used to slowly lower the chuck structure 1 under the guidance of the sliding groove 211 and the sliding block 113 by means of hoisting.

[0069] In addition, it should be noted that in the construction field, considering the priority of safety, by applying the construction device of the present invention, a better-quality pile body can be obtained after grouting, improving the service life of the pile body, being more in line with long-term economic benefits, and being conducive to avoiding personal and public property losses caused by quality problems.

[0070] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, 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, it should be considered as within the scope described in this specification.

[0071] The above embodiments only represent several implementation manners of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the patent application. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the appended 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 are 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.

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