Hole collapse prevention device for karst pile foundation construction

Abstract

The utility model discloses a hole collapse prevention device for karst pile foundation construction, which belongs to the technical field of karst pile foundation construction and comprises a steel casing, a reinforcing ring is sleeved on the top of the steel casing, a plurality of pulling mechanisms are arranged on the side portion of the reinforcing ring, a plurality of vertical sliding grooves are arranged at the bottom of the outer side of the reinforcing ring, and the vertical sliding grooves are communicated with the reinforcing ring. A plurality of transverse sliding grooves are formed in the outer side of the reinforcing ring, and one end of each transverse sliding groove communicates with the top end of the corresponding vertical sliding groove. When the steel casing and the reinforcing ring are connected, the sliding column on the side portion of the steel casing is inserted from the vertical sliding groove and transversely moves to one end in the inner cavity of the transverse sliding groove, the position of the sliding column in the transverse sliding groove is limited through the second bolt, and therefore the steel casing and the reinforcing ring are connected through matching of the sliding column and the transverse sliding groove. The integrity of the steel casing structure is effectively guaranteed, and then the overall strength of the steel casing is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to karst pile construction technical field more specifically, relate to a kind of karst pile construction hole collapse prevention device. BACKGROUND

[0002] Karst pile construction scheme is suitable for the engineering of pile construction under karst geological conditions.Karst geology refers to the dissolution caused by the erosion of groundwater, which leads to unstable geological structure, fragile rock stratum and thin soil layer. Karst pile is a pile construction method under karst geological conditions, which uses drilling machine or excavator to drill holes in rock stratum, install steel piles and then pour concrete. During the drilling process, a steel casing is usually installed at the hole opening to prevent its collapse.

[0003] According to the search, the utility model patent with publication number CN219671332U discloses a karst pile construction hole collapse prevention device, which comprises a steel casing body, a connecting reinforcement mechanism, the connecting reinforcement mechanism is arranged on the steel casing body, the connecting reinforcement mechanism comprises a reinforcing ring, the reinforcing ring is arranged at the top of the steel casing body, fixed grooves are formed in the left and right sides of the steel casing body, a threaded rod is movably connected to the inner wall groove of the fixed groove through a bearing, the ends of the two threaded rods away from each other penetrate through the fixed groove and extend to the outside, and an activity plate is threadedly connected to the surface of the threaded rod. The first and second impact-resistant layers improve the impact resistance of the steel casing, improve the quality of the steel casing during use, prolong its service life, the reinforcing layer improves the strength of the steel casing, ensures its service life, the elastic layer makes the steel casing have certain toughness and improves its comprehensive performance.

[0004] However, the above-mentioned patent still has the following disadvantages: a fixed groove needs to be formed in the side of the steel casing body when installing the reinforcing ring, which reduces the overall strength of the steel casing body and causes deformation when the steel casing is struck by a vibrating hammer. In addition, while preventing the collapse of the soil outside the steel casing, the soft soil is prone to tilting with the steel casing, affecting the stability of the steel casing during use. Therefore, we propose a karst pile construction hole collapse prevention device. UTILITY MODEL CONTENTS

[0005] In view of the problems in the prior art, the utility model aims to provide a karst pile construction hole collapse prevention device.

[0006] To solve the above problems, the utility model adopts the following technical solutions:

[0007] The utility model relates to a karst pile construction anti -caving device, including steel casing, the top of steel casing is sleeved with reinforcing ring, the side of reinforcing ring is provided with a plurality of pull mechanism, the bottom of reinforcing ring outside is opened with a plurality of vertical sliding slot, the outside of reinforcing ring is opened with a plurality of horizontal sliding slot, one end of horizontal sliding slot and the top of vertical sliding slot are communicated, the outside of steel casing is fixedly connected with a plurality of slide posts, the end of slide post is respectively movably sleeved to the inner chamber of horizontal sliding slot, the bottom of reinforcing ring is opened with a plurality of second screw holes, the inner chamber of second screw hole is all screwed with second bolt, the top of second bolt extends to the inner chamber of horizontal sliding slot, the side of second bolt top and the side of slide post are attached.

[0008] As a preferred scheme of the utility model, the pull mechanism includes a connecting frame fixedly connected to the side of the reinforcing ring, two sides of the connecting frame are respectively provided with mounting holes, an inner cavity of the connecting frame is sleeved with a pull tube, one end of the pull tube is provided with a first screw hole, an inner cavity of the mounting hole is sleeved with a first bolt, a middle part of the first bolt is screwed into the inner cavity of the first screw hole, a top and a bottom of the other end of the pull tube are provided with perforations, a nut is fixedly connected to the top of the pull tube and above the perforations, the nut is screwed with a screw rod, a top end of the screw rod is fixedly connected with a knob, a bottom end of the screw rod extends to the bottom of the pull tube through the perforations and is fixedly connected with a spiral nail.

[0009] As a preferred scheme of the utility model, the top of the steel casing is provided with a slot, the top of the inner cavity of the reinforcing ring is fixedly connected with a ring, the bottom end of the ring is movably sleeved into the inner cavity of the slot, the outer side of the ring is attached to the inner wall of the slot.

[0010] As a preferred scheme of the utility model, the inside of the steel casing is provided with an alloy steel reinforcing layer, the inside of the steel casing and the inner and outer sides of the alloy steel reinforcing layer are both provided with a foamed aluminum impact-resistant layer.

[0011] As a preferred scheme of the utility model, the outer side of the steel casing is attached to the inner side of the reinforcing ring, the outer side of the slide post is attached to the inner wall of the horizontal sliding slot.

[0012] As a preferred scheme of the utility model, the inner wall of the connecting frame is attached to the side of the pull tube, the outer diameter of the first bolt is equal to the inner diameter of the mounting hole.

[0013] Compared with the prior art, the utility model has the advantages that:

[0014] (1) The utility model discloses a steel casing and reinforcing ring are connected, make the slide column of steel casing side department from the vertical sliding slot insert, and make the slide column transverse to one end in the inner chamber of horizontal sliding slot, utilize the second bolt to limit the position of slide column in horizontal sliding slot, thereby utilize the cooperation of slide column and horizontal sliding slot and connect between steel casing and reinforcing ring, effectively guarantee the integrity of steel casing structure, and further guarantee the overall strength of steel casing.

[0015] (2) The utility model discloses a steel casing inserts into the ground, and then inserts the pull tube to the connecting frame of reinforcing ring side department, makes the spiral nail spin into the ground through the thread cooperation of screw rod and nut, utilizes the cooperation of spiral nail, screw rod and nut and fixes the pull tube, utilizes the pull tube and pulls reinforcing ring and steel casing, avoids that steel casing and reinforcing ring are inclined with soft soil, improves the stability of the karst pile construction hole collapse prevention device. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is whole structure schematic diagram of the utility model;

[0017] Figure 2 It is whole structure explosion drawing of the utility model;

[0018] Figure 3 It is structure schematic diagram of steel casing of the utility model;

[0019] Figure 4 It is structure schematic diagram of reinforcing ring of the utility model;

[0020] Figure 5 It is structure schematic diagram of pull tube of the utility model.

[0021] Mark explanation in drawing:

[0022] 1, steel casing;2, reinforcing ring;3, vertical sliding slot;4, horizontal sliding slot;5, slide column;6, second screw hole;7, second bolt;8, pull mechanism;9, slot;10, insert ring;11, connecting frame;12, pull tube;13, first screw hole;14, mounting hole;15, first bolt;16, perforation;17, nut;18, screw rod;19, knob;20, spiral nail;21, alloy steel reinforcing layer;22, foamed aluminum impact resistance layer. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the utility model.

[0024] In the description of the utility model, it needs to explain, the term "upper", "lower", "internal", "external", "top / bottom end" and so on indicate the orientation or position relation is based on the orientation or position relation shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and not indicate or imply that the device or element must have a particular orientation, construct and operate with a particular orientation, therefore cannot be understood as the limitation of the utility model. In addition, the term "first", "second" is only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0025] In the description of the utility model, it needs to explain, unless otherwise explicitly provided and limited, the term "installation", "set with", "sleeve set / interface", "connection" and so on, should be broad understanding, for example "connection", can be fixed connection, also can be detachable connection, or integrally connected, can be mechanical connection, also can be electrical connection, can be directly connected, also can be indirectly connected through intermediate medium, can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0026] Embodiment:

[0027] Please refer to Figures 1-5 , a karst pile foundation construction hole collapse prevention device, including steel casing 1, the top of steel casing 1 is provided with reinforcing ring 2, the side of reinforcing ring 2 is provided with multiple pulling mechanisms 8, the bottom of the outer side of reinforcing ring 2 is provided with multiple vertical sliding grooves 3, the outer side of reinforcing ring 2 is provided with multiple horizontal sliding grooves 4, one end of horizontal sliding groove 4 and the top end of vertical sliding groove 3 are communicated, the outer side of steel casing 1 is fixedly connected with multiple sliding columns 5, the ends of sliding column 5 are movably sleeved into the inner cavities of horizontal sliding groove 4, the bottom of reinforcing ring 2 is provided with multiple second screw holes 6, the inner cavities of second screw hole 6 are all screw-mounted with second bolts 7, the top ends of second bolt 7 extend into the inner cavities of horizontal sliding groove 4, the side surface of the top end of second bolt 7 and the side surface of sliding column 5 are attached.

[0028] In the embodiment, the sliding column 5 located at one end of the horizontal sliding groove 4 is limited and fixed by the second bolt 7, so as to ensure the stability of the connection between the steel casing 1 and the reinforcing ring 2 by the sliding column 5.

[0029] Specifically, please refer to Figure 1 , Figure 2 , Figure 4 And Figure 5The pulling mechanism 8 comprises a connecting frame 11 fixedly connected to the side surface of the reinforcing ring 2, two installation holes 14 are formed in the two sides of the connecting frame 11 respectively, a pulling pipe 12 is sleeved in the inner cavity of the connecting frame 11, a first screw hole 13 is formed in one end of the pulling pipe 12, a first screw bolt 15 is sleeved in the inner cavity of the installation hole 14, the middle part of the first screw bolt 15 is threadedly sleeved into the inner cavity of the first screw hole 13, a through hole 16 is formed in the top and bottom of the other end of the pulling pipe 12, a nut 17 is fixedly connected to the top surface of the pulling pipe 12 and located above the through hole 16, a screw rod 18 is threadedly sleeved on the nut 17, a rotary knob 19 is fixedly connected to the top end of the screw rod 18, and a spiral nail 20 is fixedly connected to the bottom end of the screw rod 18 and extends to the bottom of the pulling pipe 12 through the through hole 16.

[0030] In the embodiment, the spiral nail 20 is driven to rotate into the ground through the threaded cooperation between the screw rod 18 and the nut 17, and the reinforcing ring 2 and the steel casing 1 are pulled through the plurality of pulling pipes 12, so that the inclination of the steel casing 1 and the reinforcing ring 2 after being placed in the ground is avoided.

[0031] Specifically, please refer to Figure 2 and Figure 4 A plug groove 9 is formed in the top surface of the steel casing 1, a plug ring 10 is fixedly connected to the top of the inner cavity of the reinforcing ring 2, the bottom end of the plug ring 10 is movably sleeved into the inner cavity of the plug groove 9, and the outer side surface of the plug ring 10 is in abutment with the inner wall of the plug groove 9.

[0032] In the embodiment, the connection stability between the steel casing 1 and the reinforcing ring 2 is increased through the cooperation of the plug groove 9 and the plug ring 10.

[0033] Specifically, please refer to Figure 3 An alloy steel reinforcing layer 21 is arranged in the inner part of the steel casing 1, and a foamed aluminum impact-resistant layer 22 is arranged in the inner part of the steel casing 1 and located on the inner and outer sides of the alloy steel reinforcing layer 21.

[0034] In the embodiment, the strength of the steel casing 1 is increased through the alloy steel reinforcing layer 21, and the impact resistance of the steel casing 1 is increased through the foamed aluminum impact-resistant layer 22.

[0035] Specifically, please refer to Figure 2 and Figure 4 The outer side surface of the steel casing 1 is in abutment with the inner side surface of the reinforcing ring 2, and the outer side surface of the sliding column 5 is in abutment with the inner wall of the horizontal sliding groove 4.

[0036] In the embodiment, the stability of the reinforcing ring 2 sleeved on the top of the steel casing 1 is ensured, and the stability of the sliding column 5 in connecting the steel casing 1 and the reinforcing ring 2 is ensured through the abutment between the outer side surface of the sliding column 5 and the inner wall of the horizontal sliding groove 4.

[0037] Specifically, please refer to Figure 2 , Figure 4 and Figure 5The inner wall of the connecting frame 11 is in close contact with the side of the pulling pipe 12, and the outer diameter of the first bolt 15 is equal to the inner diameter of the mounting hole 14.

[0038] In the embodiment, the stability of the pulling pipe 12 sleeved into the inner cavity of the connecting frame 11 is ensured, the stability of the first bolt 15 in the mounting hole 14 is ensured, and the stability of the connection between the connecting frame 11 and the pulling pipe 12 is ensured.

[0039] Working principle: in use, first, place the reinforcing ring 2 on the top of the steel casing 1, and make the slide column 5 slide into the inner cavity of the vertical sliding groove 3, at this time, the bottom end of the insertion ring 10 is inserted into the insertion slot 9 on the top surface of the steel casing 1, then rotate the reinforcing ring 2, so that the slide column 5 on the side of the steel casing 1 slides in the inner cavity of the horizontal sliding groove 4, so that the slide column 5 slides to one end of the inner cavity of the horizontal sliding groove 4, at this time, the second bolt 7 is screwed into the second screw hole 6, and the end of the second bolt 7 is screwed into the inner cavity of the horizontal sliding groove 4, and the side of the second bolt 7 is used to fix the slide column 5, so as to connect the steel casing 1 and the reinforcing ring 2, then use the vibration hammer to knock the top of the reinforcing ring 2, so that the bottom end of the steel casing 1 is inserted into the hole in the karst pile foundation construction, and the top end of the reinforcing ring 2 and the steel casing 1 is placed above the ground, finally, the pulling pipe 12 is inserted into the connecting frame 11 on the side of the reinforcing ring 2, and the first bolt 15 is inserted into the mounting hole 14, so that the first bolt 15 is screwed into the first screw hole 13 to fix the connecting frame 11 and the pulling pipe 12, at this time, the knob 19 is rotated to drive the screw rod 18 and the spiral nail 20 to rotate, the spiral nail 20 is lowered through the threaded cooperation between the screw rod 18 and the nut 17, so that the spiral nail 20 is screwed into the ground, so as to fix the pulling pipe 12 through the cooperation of the spiral nail 20, the screw rod 18 and the nut 17, the reinforcing ring 2 and the steel casing 1 are pulled by the pulling pipe 12, so as to avoid the inclination of the steel casing 1 and the reinforcing ring 2 caused by the soft soil.

[0040] The above merely describes a preferred embodiment of the present application, but the protection scope of the present application is not limited to this. Any skilled person in the art can make equivalent replacement or change according to the technical scheme and improvement concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A hole collapse prevention device for karst pile foundation construction, comprising a steel casing (1), characterized in that: The top of the steel casing (1) is sleeved with a reinforcing ring (2), the side of the reinforcing ring (2) is provided with a plurality of pulling mechanisms (8), the bottom outside of the reinforcing ring (2) is provided with a plurality of vertical sliding grooves (3), the outside of the reinforcing ring (2) is provided with a plurality of horizontal sliding grooves (4), one end of the horizontal sliding groove (4) and the top end of the vertical sliding groove (3) are communicated, a plurality of sliding columns (5) are fixedly connected to the outside of the steel casing (1), the ends of the sliding columns (5) are movably sleeved into the cavities of the horizontal sliding grooves (4), a plurality of second screw holes (6) are formed in the bottom of the reinforcing ring (2), second bolts (7) are screwed into the cavities of the second screw holes (6), the top ends of the second bolts (7) extend into the cavities of the horizontal sliding grooves (4), and the side surface of the top end of the second bolt (7) is attached to the side surface of the sliding column (5).

2. The hole collapse prevention device for karst pile foundation construction of claim 1, wherein: The pulling mechanism (8) comprises a connecting frame (11) fixedly connected to the side of the reinforcing ring (2), a mounting hole (14) is formed in the side of the connecting frame (11), a pulling pipe (12) is sleeved into the cavity of the connecting frame (11), a first screw hole (13) is formed in one end of the pulling pipe (12), a first bolt (15) is sleeved into the cavity of the mounting hole (14), the middle part of the first bolt (15) is screwedly sleeved into the cavity of the first screw hole (13), a perforation (16) is formed in the top and bottom of the other end of the pulling pipe (12), a nut (17) is fixedly connected to the top of the pulling pipe (12) and located above the perforation (16), a screw rod (18) is screwedly sleeved onto the nut (17), a knob (19) is fixedly connected to the top end of the screw rod (18), and the bottom end of the screw rod (18) extends through the perforation (16) to the bottom of the pulling pipe (12) and is fixedly connected with a spiral nail (20).

3. The hole collapse prevention device for karst pile foundation construction of claim 1, wherein: A slot (9) is formed in the top surface of the steel casing (1), an insertion ring (10) is fixedly connected to the top of the cavity of the reinforcing ring (2), the bottom end of the insertion ring (10) is movably sleeved into the cavity of the slot (9), and the outer side surface of the insertion ring (10) is attached to the inner wall of the slot (9).

4. The hole collapse prevention device for karst pile construction of claim 1, wherein: An alloy steel reinforcing layer (21) is arranged in the inside of the steel casing (1), and a foamed aluminum impact-resistant layer (22) is arranged on the inner and outer sides of the alloy steel reinforcing layer (21).

5. The hole collapse prevention device for karst pile construction of claim 1, wherein: The outer side surface of the steel casing (1) is attached to the inner side surface of the reinforcing ring (2), and the outer side surface of the sliding column (5) is attached to the inner wall of the horizontal sliding groove (4).

6. The hole collapse prevention device for karst pile construction of claim 2, characterized in that: The inner wall of the connecting frame (11) is attached to the side surface of the pulling pipe (12), and the outer diameter of the first bolt (15) is equal to the inner diameter of the mounting hole (14).

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