A karst cave treatment device used in pile foundation construction

Abstract

The present invention relates to the technical field of cave filling impact devices, and specifically to a cave treatment device used in pile foundation construction, including a hanging seat, an impact seat, an external seat, and a side expansion mechanism. The hanging seat is used to be connected to a steel cable, and the hanging seat is hoisted by the steel cable. The impact seat is used to punch the filling material downward. The impact seat and the hanging seat are movably connected, the external seat is rotationally connected to the bottom end of the hanging seat, the external seat and the impact seat are slidably sleeved, and the side expansion mechanism is sleeved on the outside of the impact seat. In the present invention, the filler is compacted and impacted downward by the impact seat, and the filler layer is impacted downward by the impact seat. When the impact seat stops moving downward, the hanging seat that continues to move downward drives the external seat to move downward. The downward movement of the external seat drives multiple transverse pressure wheels in the side expansion mechanism to move away from each other, so that the transverse pressure wheels push the filler laterally, thereby accelerating the lateral diffusion of the filler, and improving the density of the outer periphery of the filler layer, thereby improving the compaction effect of the filler layer.

Description

Technical Field

[0001] The invention relates to the technical field of karst cave filling impact devices, in particular to a karst cave processing device used in pile foundation construction. Background Art

[0002] When pile foundation drilling construction is carried out in geologically complex areas, when encountering karst caves, different treatment methods are adopted according to the size of the karst caves and the conditions inside them. In the case where there is no filling or semi-filling in the karst caves, and the karst cave height is not too large, but there is serious water leakage, resulting in the inability to maintain the mud head height in the casing, it is possible to use flake stone, clay and other materials for impact backfilling to make the backfill fully dense, and repeatedly backfill flake stone and clay so that the filling layer in the karst cave will no longer leak after drilling. When constructing the clay flake stone wall method, the permeable layer needs to be supported by a steel casing, and the steel casing must penetrate the permeable layers such as gravel and pebble layers, and be located on the impermeable sub-clay layer, so as to prevent the collapse caused by the rapid drop in the head height due to the leakage of the karst cave. When the filled karst cave leaks again during the subsequent drilling construction, it is necessary to backfill and impact the leaking karst cave again until the backfill layer no longer leaks;

[0003] When the existing backfill layer is impact compacted, an impact drill is generally used to tamp the backfill layer. Since the impact drill can only move up and down at the drilling position, the compaction range of the backfill layer by the impact drill is generally cone-shaped, larger at the bottom and smaller at the top, resulting in a larger virtual pressure range on the periphery of the backfill layer. After the hole passes through the filler layer, mud is poured into the hole during downward construction to squeeze the hole wall on all sides. Since the peripheral compaction depth of the top of the drilled hole of the backfill layer is relatively shallow, the top of the drilled hole of the backfill layer is prone to collapse and leakage after the mud is poured. There is a need for a cave treatment device that can improve the compaction degree of the cave backfill layer. Summary of the invention

[0004] The purpose of the present invention is to provide a karst cave treatment device for pile foundation construction to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A karst cave treatment device used in pile foundation construction, comprising:

[0007] A hanging seat, used to be connected to the steel cable, and the hanging seat is hoisted by the steel cable;

[0008] An impact seat, used for punching the filler downwards, wherein the impact seat is movably connected to the hanging seat;

[0009] An external seat is rotatably connected to the bottom end of the hanging seat, and the external seat is slidably sleeved with the impact seat;

[0010] The side expansion mechanism is sleeved on the outside of the impact seat. The top end of the side expansion mechanism is rotatably connected to the external seat. The side expansion mechanism includes multiple circular transverse pressure wheels arranged at equal angles. When the external seat moves downward relative to the impact seat, the multiple transverse pressure wheels are driven to move away from each other.

[0011] Furthermore, the impact seat includes four punching feet fixed at the bottom end, the four punching feet are arranged at equal angles in a circle, and the impact seat includes a central tube arranged at the top end.

[0012] Furthermore, a cross bar is fixedly connected between the two sides of the inner wall of the external seat, a side slide groove is opened on the outer wall of the central tube, the side slide groove runs through the central tube, the cross bar is slidably connected to the inner wall of the side slide groove, the external seat is sleeved on the outside of the central tube, and an adjustment mechanism is provided between the external seat and the inner wall of the central tube.

[0013] Furthermore, the adjustment mechanism includes a central rod and two peripheral rods, a rotating seat is fixedly connected to the middle position of the cross rod, the bottom end of the hanging seat is rotatably connected to the rotating seat, the bottom end of the rotating seat is rotatably connected to the central rod, a plurality of bevel teeth are equidistantly fixed to the outer wall of the central rod, the two peripheral rods are respectively fixed on both sides of the inner wall of the central tube, a lowering groove is provided on the inner wall of the peripheral rod, receiving grooves are provided on both sides of the inner wall of the peripheral rod at the top of the lowering groove, and a plurality of offset grooves are provided at the top end of the inner wall of the peripheral rod.

[0014] Furthermore, the side expansion mechanism also includes an annular slide rail 2 and an annular slide rail 1, the annular slide rail 2 is rotatably connected to the outer side wall of the external seat, the annular slide rail 1 is rotatably connected to the impact seat, a plurality of bracket modules are arranged between the annular slide rail 1 and the annular slide rail 2, and the plurality of bracket modules correspond one-to-one to the plurality of transverse pressure wheels, and the transverse pressure wheel is rotatably connected to one end of the corresponding bracket module.

[0015] Further, the bracket module includes a fixing seat 1 and a fixing seat 2, the fixing seat 1 is fixedly connected to the outer wall of the annular slide rail 1, the fixing seat 2 is fixedly connected to the outer wall of the annular slide rail 2, one end of the fixing seat 2 is rotatably connected to a support arm, one end of the fixing seat 1 is rotatably connected to a curved arm, one end of the curved arm is rotatably connected to the middle position of the support arm, and one end of the support arm is rotatably connected to the corresponding transverse pressure wheel.

[0016] Furthermore, the distance between the rotation axes at both ends of the crank arm is half of the distance between the rotation axes at both ends of the support arm, and the rotation axis at the other end of the support arm is located directly above a rotation axis of the fixing seat.

[0017] Furthermore, an extrusion disk is fixedly sleeved on the outer wall of the top end of the central tube, a fixed seat three is fixedly connected to the top surface of the fixed seat two, a dislocation frame is rotatably connected to the top end of the fixed seat three, the dislocation frame includes a push rod arranged at one end and a counterweight rod arranged at the other end, and the length of the push rod is greater than the length of the counterweight rod.

[0018] Furthermore, a plurality of protrusions are fixedly connected to the bottom surface of the extrusion disk in an annular manner with equal distances.

[0019] Furthermore, a receiving seat is fixedly connected to the bottom end of the outer wall of the central tube, a fixed ring rail is arranged below the receiving seat, the fixed ring rail and the top outer walls of the plurality of stamping feet are fixedly connected by bolts, and the annular slide rail is rotatably connected between the fixed ring rail and the plurality of stamping feet.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. Through the arrangement of multiple transverse pressure wheels, after the filling material composed of stone flakes and clay is added into the cave, the steel cable continuously drives the present invention to move up and down, thereby impacting the filling material from top to bottom, and impacting the filling layer downwardly through the impact seat. When the impact seat stops moving downward, the hanging seat that continues to move downward drives the external seat to move downward, and the external seat moves downward to drive multiple transverse pressure wheels in the side expansion mechanism to move away from each other, so that the transverse pressure wheels push the filling material laterally, accelerate the lateral diffusion of the filling material, and improve the density of the outer periphery of the filling layer, thereby improving the compaction effect of the filling layer, reducing the risk of collapse of the filling layer, and thus reducing the subsequent repeated tamping and rework caused by leakage of the filling layer in the cave;

[0022] 2. Through the arrangement of the bracket module and the offset frame, when the annular slide rail 2 moves upward, the bracket module drives multiple transverse pressure wheels to gather toward the middle, and the upward movement of the annular slide rail 2 drives the offset frame to contact the extrusion plate, and one end of the push rod contacts with a protrusion. As the annular slide rail 2 moves upward, the annular slide rail 2 pushes the extrusion plate through the push rod, thereby causing the side expansion mechanism and the impact seat to rotate in opposite directions relative to each other, and due to the rotational connection between the hanging seat and the external seat, and the rotational connection between the external seat and the annular slide rail 2, the rotation of the side expansion mechanism and the impact seat has little effect on the rotation of the hanging seat, thereby reducing the torsion of the steel cable caused, and through the rotation arrangement of the side expansion mechanism and the impact seat, the impact seat is pushed to rotate forward, and the side expansion mechanism is pushed to rotate reversely by the reaction force, thereby adjusting the angle of the transverse pressure wheel, realizing lateral impact of the transverse pressure wheel on the circumference of the packing layer, and facilitating uniform impact and compaction of the packing layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the existing impact drill compacting backfill layer;

[0024] Figure 2 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 3 It is a schematic diagram of the structure of the impact seat in the present invention;

[0026] Figure 4 It is a schematic diagram of the structure of the side expansion mechanism in the present invention;

[0027] Figure 5 It is a schematic diagram of the structure of the regulating mechanism in the present invention;

[0028] Figure 6 It is a schematic diagram of the peripheral rod structure in the present invention;

[0029] Figure 7 It is a schematic diagram of the structure of the multiple transverse pressure wheels in the unfolded state in the present invention.

[0030] In the figure: 100, hanging seat; 200, impact seat; 210, punching foot; 220, center tube; 221, side slide groove; 230, fixed ring rail; 240, extrusion plate; 241, protrusion; 250, receiving seat; 300, side expansion mechanism; 310, ring slide rail 1; 320, ring slide rail 2; 330, horizontal pressure wheel; 340, bracket module; 341, support arm; 342, fixed seat 1; 343, curved arm; 344, fixed seat 2; 345, fixed seat 3; 350, offset frame; 351, push rod; 352, counterweight rod; 400, adjustment mechanism; 410, outer rod; 411, lowering groove; 412, receiving groove; 413, offset groove; 420, center rod; 421, oblique teeth; 500, external seat; 510, cross rod; 520, rotating seat. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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.

[0032] See also Figures 2 to 5In an embodiment of the present invention, a karst cave treatment device used in pile foundation construction includes a hanging seat 100, an impact seat 200, a side expansion mechanism 300, and an external seat 500. The hanging seat 100 is used to be connected with a steel cable, and the hanging seat 100 is hoisted by the steel cable. The impact seat 200 is used to press the filling material downward, and the impact seat 200 is movably connected with the hanging seat 100. The external seat 500 is rotatably connected to the bottom end of the hanging seat 100, and the external seat 500 and the impact seat 200 are slidably connected. The side expansion mechanism 300 is sleeved on the outside of the impact seat 200, and the top of the side expansion mechanism 300 is rotatably connected to the external seat 500. The side expansion mechanism 300 includes a plurality of annular equiangularly arranged transverse pressure wheels 330. When the external seat 500 moves downward relative to the impact seat 200, it drives the plurality of transverse pressure wheels 330 to move away from each other.

[0033] Specifically, after the filling material consisting of stone flakes and clay is added into the cave, the present invention is continuously driven up and down by the steel cable, so as to impact the filling from top to bottom, and the filling layer is impacted downward by the impact seat 200. When the impact seat 200 stops moving downward, the hanging seat 100 continues to move downward, and the hanging seat 100 drives the external seat 500 to move downward. The downward movement of the external seat 500 drives the multiple transverse pressure wheels 330 in the side expansion mechanism 300 to move laterally away from each other, so that the transverse pressure wheels 330 push the filling laterally, thereby accelerating the lateral diffusion of the filling, and improving the density of the periphery of the filling layer, thereby improving the compaction effect of the filling layer, reducing the risk of collapse of the filling layer, and reducing the subsequent repeated tamping and rework caused by leakage of the cave filling layer.

[0034] Embodiment 1

[0035] like Figures 3 to 7 As shown, in this embodiment, the side expansion mechanism 300 also includes an annular slide rail 2 320 and an annular slide rail 1 310, the annular slide rail 2 320 is rotatably connected to the outer wall of the external seat 500, the annular slide rail 1 310 is rotatably connected to the impact seat 200, a plurality of bracket modules 340 are arranged between the annular slide rail 1 310 and the annular slide rail 2 320, and the plurality of bracket modules 340 correspond to the plurality of transverse pressure wheels 330 one by one, the transverse pressure wheels 330 are rotatably connected to one end of the corresponding bracket module 340, the bracket module 340 includes a fixing seat 1 342 and a fixing seat 2 344, the fixing seat 1 34 2 is fixedly connected to the outer wall of the annular slide rail 1 310, the second fixing seat 344 is fixedly connected to the outer wall of the second annular slide rail 320, one end of the second fixing seat 344 is rotatably connected to the support arm 341, one end of the fixing seat 1 342 is rotatably connected to the curved arm 343, one end of the curved arm 343 is rotatably connected to the middle position of the support arm 341, one end of the support arm 341 is rotatably connected to the corresponding transverse pressure wheel 330, the distance between the rotation axes at both ends of the curved arm 343 is half the distance between the rotation axes at both ends of the support arm 341, and the rotation axis of the other end of the support arm 341 is located directly above the rotation axis of the fixing seat 1 342;

[0036] The top outer wall of the center tube 220 is fixedly sleeved with an extrusion disk 240, the top surface of the fixed seat 2 344 is fixedly connected with a fixed seat 345, the top of the fixed seat 345 is rotatably connected with a dislocation frame 350, the dislocation frame 350 includes a push rod 351 arranged at one end and a counterweight rod 352 arranged at the other end, the length of the push rod 351 is greater than the length of the counterweight rod 352, a plurality of protrusions 241 are fixedly connected to the bottom surface of the extrusion disk 240 in an annular manner at equal intervals, the bottom end of the outer wall of the center tube 220 is fixedly connected with a receiving seat 250, a fixed ring rail 230 is arranged below the receiving seat 250, the fixed ring rail 230 and the top outer walls of the plurality of stamping feet 210 are fixedly connected by bolts, and the annular slide rail 1 310 is rotatably connected between the fixed ring rail 230 and the plurality of stamping feet 210.

[0037] The cam 340 is located at the top of the second end of the second support arm 341, and the cam 341 is located at the top of the second end of the second support arm 341. As the annular slide rail 320 moves upward, the annular slide rail 320 pushes the extrusion disk 240 through the push rod 351, so that the side expansion mechanism 300 and the impact seat 200 rotate in opposite directions relative to each other, and because the suspension seat 100 is rotationally connected to the external seat 500, and the external seat 500 is rotationally connected to the annular slide rail 320, the rotation of the side expansion mechanism 300 and the impact seat 200 has little effect on the rotation of the suspension seat 100, thereby reducing the resulting torsion of the steel cable, and through the rotation setting of the side expansion mechanism 300 and the impact seat 200, the impact seat 200 is pushed to rotate in the forward direction, and the side expansion mechanism 300 is pushed to rotate in the reverse direction by the reaction force, thereby adjusting the angle of the transverse pressure wheel 330, achieving transverse impact of the transverse pressure wheel 330 on the circumference of the packing layer, facilitating uniform impact and compaction of the packing layer, and the rotation of the impact seat 200 achieves uniform impact on the bottom of the impact seat 200.

[0038] Embodiment 2

[0039] On the basis of the first embodiment, in order to improve the downward impact force of the impact seat 200 of the first embodiment.

[0040] like Figures 4 to 7As shown, in this embodiment, the impact seat 200 includes four punching feet 210 fixed at the bottom, and the four punching feet 210 are arranged at equal angles in a ring. The impact seat 200 includes a central tube 220 arranged at the top, and a cross bar 510 is fixedly connected between the inner walls of the external seat 500 on both sides. The outer wall of the central tube 220 is provided with a side slide groove 221, and the side slide groove 221 penetrates the central tube 220. The cross bar 510 is slidably connected with the inner wall of the side slide groove 221, and the external seat 500 is sleeved on the outer side of the central tube 220, and an adjustment mechanism 400 is provided between the external seat 500 and the inner wall of the central tube 220;

[0041] The adjustment mechanism 400 includes a central rod 420 and two peripheral rods 410. A rotating seat 520 is fixedly connected to the middle position of the cross rod 510. The bottom end of the hanging seat 100 is rotatably connected to the rotating seat 520. The bottom end of the rotating seat 520 is rotatably connected to the central rod 420. A plurality of bevel teeth 421 are equidistantly fixedly connected to the outer wall of the central rod 420. The two peripheral rods 410 are respectively fixed on both sides of the inner wall of the central tube 220. A lowering groove 411 is provided on the inner wall of the peripheral rod 410. Receiving grooves 412 are provided on both sides of the inner wall of the peripheral rod 410 at the top of the lowering groove 411. A plurality of offset grooves 413 are provided on the top of the inner wall of the peripheral rod 410.

[0042] In specific implementation, after the external seat 500 moves downward relative to the central tube 220, the central rod 420 drives the oblique teeth 421 to slide into the lowering groove 411. Since the lowering groove 411 is relatively long, the external seat 500 can move downward a relatively long distance relative to the impact seat 200 when moving downward, so that the transverse pressure wheel 330 has a transverse impact on the packing layer. After the central rod 420 moves upward, the oblique teeth 421 interfere with the offset groove 413, so that the central rod 420 rotates. After the central rod 420 moves downward for the second time, the oblique teeth 421 slide into the receiving groove 412, so that the external seat 500 has a downward impact on the impact seat 200 through the central rod 420. The receiving groove 412 limits the downward movement of the external seat 500, thereby avoiding the transverse impact of multiple transverse pressure wheels 330, thereby increasing the downward impact force of the impact seat 200, and facilitating the downward compaction of the packing layer.

[0043] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0044] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A cave treatment device for pile foundation construction, characterized in that: include: A hanging seat (100) is used to be connected to the steel cable, and the hanging seat (100) is hoisted by the steel cable; An impact seat (200) is used to press the filler downwards, and the impact seat (200) is movably connected to the hanging seat (100); An external seat (500) is rotatably connected to the bottom end of the hanging seat (100), and the external seat (500) is slidably sleeved with the impact seat (200); A side expansion mechanism (300) is sleeved on the outside of the impact seat (200), the top end of the side expansion mechanism (300) is rotatably connected to the external seat (500), the side expansion mechanism (300) comprises a plurality of annular transverse pressure wheels (330) arranged at equal angles, and when the external seat (500) moves downward relative to the impact seat (200), it drives the plurality of transverse pressure wheels (330) to move away from each other; The impact seat (200) comprises four punching feet (210) fixed at the bottom end, the four punching feet (210) are arranged in a ring with equal angles, and the impact seat (200) comprises a central tube (220) arranged at the top end; A cross bar (510) is fixedly connected between the two sides of the inner wall of the external seat (500), a side slide groove (221) is provided on the outer wall of the central tube (220), the side slide groove (221) penetrates the central tube (220), the cross bar (510) is slidably connected to the inner wall of the side slide groove (221), the external seat (500) is sleeved on the outer side of the central tube (220), and an adjustment mechanism (400) is provided between the external seat (500) and the inner wall of the central tube (220); The adjustment mechanism (400) comprises a central rod (420) and two peripheral rods (410); a rotating seat (520) is fixedly connected to the middle position of the cross rod (510); the bottom end of the hanging seat (100) is rotatably connected to the rotating seat (520); the bottom end of the rotating seat (520) is rotatably connected to the central rod (420); a plurality of bevel teeth (421) are equidistantly fixedly connected to the outer wall of the central rod (420); the two peripheral rods (410) are respectively fixed to the two sides of the inner wall of the central tube (220); a lowering groove (411) is provided on the inner wall of the peripheral rod (410); receiving grooves (412) are provided on the inner wall of the peripheral rod (410) at the two sides of the top of the lowering groove (411); and a plurality of offset grooves (413) are provided at the top of the inner wall of the peripheral rod (410).

2. A karst cave treatment device for pile foundation construction according to claim 1, characterized in that: The side expansion mechanism (300) further comprises an annular slide rail 2 (320) and an annular slide rail 1 (310), wherein the annular slide rail 2 (320) is rotatably connected to the outer side wall of the external seat (500), the annular slide rail 1 (310) is rotatably connected to the impact seat (200), a plurality of bracket modules (340) are arranged between the annular slide rail 1 (310) and the annular slide rail 2 (320), and the plurality of bracket modules (340) correspond one to one to the plurality of transverse pressure wheels (330), and the transverse pressure wheel (330) is rotatably connected to one end of the corresponding bracket module (340).

3. A karst cave treatment device for pile foundation construction according to claim 2, characterized in that: The support module (340) includes a fixing seat 1 (342) and a fixing seat 2 (344), wherein the fixing seat 1 (342) is fixedly connected to the outer wall of the annular slide rail 1 (310), and the fixing seat 2 (344) is fixedly connected to the outer wall of the annular slide rail 2 (320), one end of the fixing seat 2 (344) is rotatably connected to a support arm (341), and one end of the fixing seat 1 (342) is rotatably connected to a curved arm (343), one end of the curved arm (343) is rotatably connected to the middle position of the support arm (341), and one end of the support arm (341) is rotatably connected to the corresponding transverse pressure wheel (330).

4. A karst cave treatment device for pile foundation construction according to claim 3, characterized in that: The distance between the rotation axes at both ends of the curved arm (343) is half the distance between the rotation axes at both ends of the support arm (341), and the rotation axis at the other end of the support arm (341) is located directly above the rotation axis of the first fixing seat (342).

5. A karst cave treatment device for pile foundation construction according to claim 4, characterized in that: The top outer wall of the center tube (220) is fixedly sleeved with an extrusion disk (240), the top surface of the second fixing seat (344) is fixedly connected with the third fixing seat (345), the top of the third fixing seat (345) is rotatably connected with a dislocation frame (350), the dislocation frame (350) comprises a push rod (351) arranged at one end and a counterweight rod (352) arranged at the other end, and the length of the push rod (351) is greater than the length of the counterweight rod (352).

6. A karst cave treatment device for pile foundation construction according to claim 5, characterized in that: A plurality of protrusions (241) are fixedly connected in an annular manner at equal intervals to the bottom surface of the extrusion disk (240).

7. A karst cave treatment device for pile foundation construction according to claim 6, characterized in that: A receiving seat (250) is fixedly connected to the bottom end of the outer wall of the central tube (220), a fixed ring rail (230) is arranged below the receiving seat (250), the fixed ring rail (230) and the top outer walls of the plurality of punching feet (210) are fixedly connected by bolts, and the annular slide rail (310) is rotatably connected between the fixed ring rail (230) and the plurality of punching feet (210).

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