Pile casing for ground reinforcement

Abstract

The present application relates to the technical field of foundation reinforcement, and discloses a pile sleeve for foundation reinforcement, which is composed of a front-end pipe, a connecting pipe and a filler hopper, and the front-end pipe, the connecting pipe and the filler hopper can be connected and separated with each other, the top of the front-end pipe is fixedly connected with a sleeve ring and an ear, the ear is embedded with a locking assembly, an ear groove is formed in the bottom end of the connecting pipe, and a plug hole is formed in the inner wall of the ear groove. The locking assembly is arranged in the ear, the ear is connected to the top end of the front-end pipe and the connecting pipe, the ear groove that is matched with the ear is formed in the bottom end of the connecting pipe, the front-end pipe and the connecting pipe can be connected, and the connection between the connecting pipes can be completed by inserting the ear into the ear groove, the locking assembly can lock the ear and the ear groove to prevent loosening, when separation is needed, the knob is only needed to be turned clockwise by 90 degrees, then the knob is fixed by using the locking block, the front-end pipe and the connecting pipe can be conveniently separated, and the overall structure makes it unnecessary to use a screw for connection.

Description

Technical Field

[0001] This invention relates to the field of foundation reinforcement technology, specifically to a pile sleeve for foundation reinforcement. Background Technology

[0002] Pipe casing is a construction method used for bored cast-in-place piles. It involves using a hydraulic full casing drilling rig to hammer or vibrate a steel pipe with a flap-shaped pile tip or a precast reinforced concrete pile tip (shoe) into the soil. Then, while pouring concrete, the pipe is pulled out using a winch or vibrated to form a pile.

[0003] According to the search, Chinese patent document, publication number CN217231774U, discloses a pile sleeve for foundation reinforcement. Through its inner and outer double-sleeve structure, the entire sleeve structure can be conveniently and stably driven into the foundation using hydraulic equipment. Removing the inner sleeve allows the soil at the pile driving location to be removed. After removal, the outer sleeve remains stably positioned, ensuring soil stability and thus the overall stability of the pile trench structure. Furthermore, compared to conventional single-sleeve structures, the sleeve structure significantly reduces the mechanical energy consumption of the equipment during implantation. Combined with seepage inlets, receiving tanks, connecting pipes, and filter frames, it can facilitate drainage operations in foundations with high soil moisture content, making it very convenient to use.

[0004] However, in actual use, the aforementioned pile sleeves lack a connecting structure, making them unsuitable for stacking. The existing pile sleeves are typically 2-4 meters long and are connected by bolts, requiring multiple people to install and dismantle them simultaneously, resulting in slow efficiency. Therefore, we need to improve upon this design. Summary of the Invention

[0005] (a) Technical problems to be solved To address the shortcomings of existing technologies, this invention provides a pile sleeve for foundation reinforcement, which has the advantages of convenient and quick connection between sleeves and easy separation after sleeve extraction, thus solving the problem of slow efficiency caused by bolt connection between current sleeves.

[0006] (II) Technical Solution To achieve the aforementioned goals of convenient and quick connection between casings and easy removal of soil from the casings during construction, the present invention provides the following technical solution: a pile casing for foundation reinforcement, comprising a front end pipe, a continuation pipe, and a filling hopper. The front end pipe, the continuation pipe, and the filling hopper can be connected to and separated from each other. The top of the front end pipe is fixedly connected with a collar and a lug. A locking component is embedded in the lug. The bottom end of the continuation pipe has an ear groove, and the inner wall of the ear groove has an insertion hole. The locking assembly includes a housing, a rotating rod, a gear, a rack, a wedge, a guide cylinder, a sleeve, a cylinder, a first spring, and a knob. The rotating rod is rotatably connected inside the housing. The gear is fixedly connected to the outer surface of the rotating rod. The gear meshes with the rack. One end of the rack is fixedly connected to the wedge, and the other end of the rack is fixedly connected to the sleeve. The guide cylinder and the cylinder are fixedly connected to the inner wall of the housing. The first spring is sleeved on the outer surface of the cylinder. One end of the rotating rod is fixedly connected to the knob.

[0007] Preferably, a plurality of pile tips are fixedly connected to the bottom end of the front end tube, the pile tips are arranged in an array around the axis of the front end tube, and three lifting holes are opened on the outer surface of the collar.

[0008] With the above technical solution, only one front-end pipe is set. The front-end pipe is first driven into the pile position at the construction site using hydraulic equipment. Since setting several pile tips can reduce the resistance when driving the front-end pipe, the three lifting holes opened on the collar are used to connect the crane, so that the front-end pipe can be lifted.

[0009] Preferably, screw holes are provided on both sides of the housing and both sides of the lug, and a square hole matching the housing is provided on the front of the lug.

[0010] With the above technical solution, the square hole on the front of the ear is used to embed the entire locking component. After the locking component is embedded in the square hole of the ear, the housing and the ear can be fixed by using screws. In this way, the locking component can be fixed inside the ear and prevent the locking component from falling off during construction or transportation.

[0011] Preferably, the ear and the ear canal are fitted with a gap, and a collar is also fixedly connected to the top of the connecting pipe.

[0012] With the above technical solution, after the hydraulic equipment drives the front pipe into the foundation, it is necessary to connect the extension pipe to the top of the front pipe. Similarly, use a crane to lift the extension pipe and erect it vertically on the top of the front pipe. Then slowly lower the extension pipe so that its bottom is connected to the top of the front pipe. At this time, the lug at the top of the front pipe is inserted into the lug groove at the bottom of the extension pipe.

[0013] Preferably, the insertion hole is adapted to the wedge block, the end of the sleeve rod away from the rack is inserted into the cylinder, one end of the first spring abuts against the rack, and the other end of the first spring abuts against the inner wall of the housing.

[0014] Through the above technical solution, during the process of inserting the earpiece into the ear canal, the ear canal first contacts the wedge. Since the upper surface of the wedge is inclined, the ear canal squeezes the wedge, which causes the wedge to drive the rack. The rack drives the sleeve rod and compresses the first spring, allowing the wedge to smoothly enter the insertion hole. This completes the connection between the front tube and the extension tube. The overall structure eliminates the need for manual connection using a screw, improving the efficiency of the connection between the front tube and the extension tube. Multiple extension tubes are provided, and the number of extension tubes used can be determined according to the depth of the foundation reinforcement. The connection between the extension tubes also follows the above steps.

[0015] Preferably, the front of the housing is recessed, the rotating rod passes through the front of the housing and is fixedly connected to the knob, and a lock hole is provided on the end face of the knob.

[0016] With the above technical solution, when it is necessary to separate the extension pipes or the extension pipes and the front pipe, the rotating rod can be rotated by turning the knob 90 degrees clockwise. The rotating rod drives the gear, the gear drives the two racks to move, and the racks drive the wedges to retract into the housing. At this time, the lugs and lugs are no longer locked. At this time, the extension pipes and the front pipe can be separated by simply lifting the extension pipe with a crane.

[0017] Preferably, the locking assembly further includes a pin, a second spring, a lever, and a locking block. The pin passes through the front of the housing, the second spring is sleeved on the outer surface of the pin, and one end of the pin is fixedly connected to the lever, while the back of the lever is fixedly connected to the locking block.

[0018] With the above technical solution, when the knob is turned clockwise, the wedge retracts into the housing. Because the first spring is set to abut the rack, the wedge will reset once the knob is released. At this time, the lever needs to be pulled to drive the pin to compress the second spring. Then, the pin is rotated to make the locking block align with the locking hole on the end face of the knob. Then, the lever is released, and the second spring returns to its elasticity, causing the locking block to be inserted into the locking hole on the end face of the knob. This can fix the knob so that it no longer rotates. Then, a crane can be used to lift the extension pipe. However, it should be noted that when the front pipe and the extension pipe need to be connected, the locking block should not be inserted into the locking hole on the end face of the knob to avoid locking the gear.

[0019] Preferably, a lifting ring is welded to the top of the packing hopper, and an ear groove is also provided at the bottom of the packing hopper.

[0020] With the above technical solution, when pouring concrete, a crane can be used to connect the lifting ring and then lift the filling hopper. The filling hopper is then connected to the connecting pipe, and concrete is poured into the filling hopper to facilitate the concrete entering the pile sleeve.

[0021] Compared with the prior art, the present invention provides a pile sleeve for foundation reinforcement, which has the following beneficial effects: 1. The present invention provides a pile sleeve for foundation reinforcement, which is equipped with a locking component installed in the lug. The lug is connected to the top of the front end pipe and the extension pipe. The bottom of the extension pipe has a groove that matches the lug. By inserting the lug into the groove, the connection between the front end pipe and the extension pipe, as well as the connection between the extension pipes, can be completed. During the process, the locking component can lock the lug and the groove to prevent loosening. When separation is required, simply turn the knob 90 degrees clockwise and then use the locking block to fix the knob to easily separate the front end pipe and the extension pipe. The overall structure eliminates the need for manual connection using a screw, thus improving the efficiency of the connection between the front end pipe and the extension pipe.

[0022] 2. The pile sleeve for foundation reinforcement provided by the present invention allows the wedge to retract into the housing when the knob is turned clockwise. At this time, the lever needs to be pulled to drive the pin to compress the second spring. Then, the pin is rotated to align the locking block with the locking hole on the end face of the knob. After releasing the lever, the second spring returns to its elasticity and drives the locking block to insert into the locking hole on the end face of the knob. This can fix the knob so that it no longer rotates, preventing the first spring from hitting the rack and avoiding the problem that the wedge will reset once the knob is released. Attached Figure Description

[0023] Figure 1 This is a three-dimensional schematic diagram of the front end tube of the present invention; Figure 2 The structure of this invention Figure 1 A magnified view of part A in the diagram; Figure 3 This is a three-dimensional schematic diagram of the continuation pipe of the present invention; Figure 4 The structure of this invention Figure 3 A magnified view of part B in the diagram; Figure 5 This is a three-dimensional schematic diagram of the packing hopper structure of the present invention; Figure 6 This is a three-dimensional schematic diagram of the structural locking component of the present invention; Figure 7 This is a cross-sectional view of the structural locking component of the present invention from the front view. Figure 8 This is a cross-sectional view of the structural locking component of the present invention from a side perspective.

[0024] The components are as follows: 1. Front end tube; 2. Extension tube; 3. Filler hopper; 31. Lifting ring; 4. Collar; 41. Lifting hole; 5. Connecting lug; 6. Locking assembly; 61. Housing; 62. Rotating rod; 63. Gear; 64. Rack; 65. Wedge; 66. Guide cylinder; 67. Sleeve rod; 68. Cylinder; 69. First spring; 610. Knob; 611. Pin; 612. Second spring; 613. Paddle; 614. Locking block; 7. Ear groove; 8. Insertion hole. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Please see Figures 1-8 A pile sleeve for foundation reinforcement includes a front end pipe 1, a continuation pipe 2 and a filling hopper 3. The front end pipe 1, the continuation pipe 2 and the filling hopper 3 can be connected to each other and separated. The top of the front end pipe 1 is fixedly connected to a collar 4 and a lug 5. A locking component 6 is embedded in the lug 5. The bottom end of the continuation pipe 2 is provided with a groove 7 and an insertion hole 8 is provided on the inner wall of the groove 7. The locking assembly 6 includes a housing 61, a rotating rod 62, a gear 63, a rack 64, a wedge 65, a guide cylinder 66, a sleeve rod 67, a cylinder 68, a first spring 69, and a knob 610. The rotating rod 62 is rotatably connected inside the housing 61. The gear 63 is fixedly connected to the outer surface of the rotating rod 62. The gear 63 meshes with the rack 64. One end of the rack 64 is fixedly connected to the wedge 65, and the other end of the rack 64 is fixedly connected to the sleeve rod 67. The guide cylinder 66 and the cylinder 68 are fixedly connected to the inner wall of the housing 61. The first spring 69 is sleeved on the outer surface of the cylinder 68. One end of the rotating rod 62 is fixedly connected to the knob 610.

[0027] Specifically, the bottom end of the front-end pipe 1 is fixedly connected to several pile tips 101, which are arranged in an array around the axis of the front-end pipe 1. Three lifting holes 41 are opened on the outer surface of the collar 4. The advantage is that only one front-end pipe 1 is set. At the pile position on the construction site, the front-end pipe 1 is first driven into the pile using hydraulic equipment. Since several pile tips 101 are set, the resistance can be reduced when driving the front-end pipe 1. The three lifting holes 41 opened on the collar 4 are used to connect to a crane, so that the front-end pipe 1 can be lifted.

[0028] Specifically, screw holes are provided on both sides of the housing 61 and both sides of the lug 5, and a square hole matching the housing 61 is provided on the front of the lug 5. The advantage is that the square hole on the front of the lug 5 is used to embed the entire locking component 6. After the locking component 6 is embedded in the square hole of the lug 5, the housing 61 and the lug 5 can be fixed by using screws. In this way, the locking component 6 can be fixed inside the lug 5 as a whole, preventing the locking component 6 from falling off during construction or transportation.

[0029] Specifically, the lug 5 and the groove 7 are fitted together with a clearance, and the top of the extension pipe 2 is also fixedly connected with a collar 4. The advantage is that after the hydraulic equipment drives the front pipe 1 into the foundation, the extension pipe 2 needs to be connected to the top of the front pipe 1. Similarly, the extension pipe 2 is hoisted by a crane and erected vertically on the top of the front pipe 1. Then, the extension pipe 2 is slowly lowered so that its bottom aligns with the top of the front pipe 1. At this time, the lug 5 located at the top of the front pipe 1 is inserted into the groove 7 located at the bottom of the extension pipe 2.

[0030] Specifically, the insertion hole 8 is adapted to the wedge 65, and the end of the sleeve 67 away from the rack 64 is inserted into the cylinder 68. One end of the first spring 69 abuts against the rack 64, and the other end of the first spring 69 abuts against the inner wall of the housing 61. The advantage is that during the process of inserting the ear 5 into the ear canal 7, the ear canal 7 first contacts the wedge 65. Since the upper surface of the wedge 65 is inclined, the ear canal 7 squeezes the wedge 65, which causes the wedge 65 to drive the rack 64. The rack 64 drives the sleeve 67 and compresses the first spring 69, so that the wedge 65 can smoothly enter the insertion hole 8. In this way, the connection between the front end tube 1 and the extension tube 2 is completed. The overall structure eliminates the need for manual connection using a screw, improving the efficiency of the connection between the front end tube 1 and the extension tube 2. Multiple extension tubes 2 are provided, and the number of extension tubes 2 used can be determined according to the depth of the foundation reinforcement. The connection between the extension tubes 2 also follows the above steps.

[0031] Specifically, the front of the housing 61 is concave, and the rotating rod 62 passes through the front of the housing 61 and is fixedly connected to the knob 610. A locking hole is provided on the end face of the knob 610. The advantage is that when it is necessary to separate the extension pipes 2 or the extension pipe 2 and the front end pipe 1, the rotating rod 62 can be rotated by turning the knob 610 clockwise by 90 degrees. The rotating rod 62 drives the gear 63, and the gear 63 drives the two racks 64 to move. The racks 64 drive the wedge 65 to retract into the housing 61. At this time, the lug 5 and the lug 7 are no longer locked. At this time, the extension pipe 2 and the front end pipe 1 can be separated simply by lifting the extension pipe 2 with a crane.

[0032] Specifically, the locking assembly 6 also includes a pin 611, a second spring 612, a paddle 613, and a locking block 614. The pin 611 is inserted through the front of the housing 61, the second spring 612 is sleeved on the outer surface of the pin 611, and one end of the pin 611 is fixedly connected to the paddle 613, while the back of the paddle 613 is fixedly connected to the locking block 614. The advantage is that when the knob 610 is turned clockwise, the wedge 65 retracts into the housing 61. Since the first spring 69 is set to abut against the rack 64, the wedge 65 will reset once the knob 610 is released. At this time, the lever 613 needs to be pulled to drive the pin 611 to compress the second spring 612. Then, the pin 611 is rotated to make the locking block 614 align with the locking hole on the end face of the knob 610. Then, the lever 613 is released, and the second spring 612 returns to its elasticity, driving the locking block 614 to insert into the locking hole on the end face of the knob 610. This can fix the knob 610 so that it no longer rotates. Then, a crane can be used to lift the extension pipe 2. However, it should be noted that when the front end pipe and the extension pipe 2 need to be connected, the locking block 614 should not be inserted into the locking hole on the end face of the knob 610 to avoid locking the gear 63.

[0033] Specifically, a lifting ring 31 is welded to the top of the filling hopper 3, and an ear groove 7 is also provided at the bottom of the filling hopper 3. The advantage is that when pouring concrete, a crane can be used to connect the lifting ring 31 and then lift the filling hopper 3, and then connect the filling hopper 3 to the extension pipe 2. Subsequently, by pouring concrete into the filling hopper 3, the concrete can easily enter the inside of the pile sleeve.

[0034] In use, firstly, hydraulic equipment is used to drive the front-end pipe 1 into the foundation at the pile location on the construction site. When only the top of the front-end pipe 1 is exposed, the extension pipe 2 is lifted and vertically erected above the front-end pipe 1. Then, the extension pipe 2 is slowly lowered so that its bottom aligns with the top of the front-end pipe 1. At this point, the lug 5 at the top of the front-end pipe 1 is inserted into the groove 7 at the bottom of the extension pipe 2. The groove 7 first contacts the wedge 65. Since the upper surface of the wedge 65 is inclined, the groove 7 presses against the wedge 65, causing the wedge 65 to drive the rack 64. The rack 64 drives the sleeve 67 and compresses the first spring 69, allowing the wedge 65 to smoothly enter the insertion hole 8. This completes the connection between the front-end pipe 1 and the extension pipe 2. Extension pipes 2 are added one by one according to the designed depth until the set depth is reached. Then, a crane is used to connect the lifting ring 31. Then, the filling bucket 3 is lifted and connected to the extension pipe 2. Concrete is then poured into the filling bucket 3 to facilitate its entry into the pile casing. The extension pipe 2 is then pulled out one by one using hydraulic equipment. The knob 610 is rotated 90 degrees clockwise to drive the rotating rod 62. The rotating rod 62 drives the gear 63, which drives the two racks 64 to move the wedge 65 back into the housing 61. Then, the lever 613 is pulled to drive the pin 611 to compress the second spring 612. The pin 611 is then rotated to align the locking block 614 with the locking hole on the end face of the knob 610. The lever 613 is then released, and the second spring 612 returns to its elasticity, causing the locking block 614 to insert into the locking hole on the end face of the knob 610. This fixes the knob 610 so that it no longer rotates. The extension pipe 2 can then be lifted with a crane until the front end pipe 1 is also pulled out.

[0035] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pile sleeve for foundation reinforcement, comprising a front end pipe (1), a connecting pipe (2), and a filling hopper (3), wherein the front end pipe (1), the connecting pipe (2), and the filling hopper (3) can be interconnected and separated, characterized in that: The top of the front end tube (1) is fixedly connected to a collar (4) and a lug (5), a locking component (6) is embedded in the lug (5), and an ear groove (7) is opened at the bottom of the extension tube (2), and an insertion hole (8) is opened on the inner wall of the ear groove (7). The locking assembly (6) includes a housing (61), a rotating rod (62), a gear (63), a rack (64), a wedge (65), a guide cylinder (66), a sleeve rod (67), a cylinder (68), a first spring (69), and a knob (610). The rotating rod (62) is rotatably connected inside the housing (61). The gear (63) is fixedly connected to the outer surface of the rotating rod (62). The gear (63) meshes with the rack (64). One end of the rack (64) is fixedly connected to the wedge (65), and the other end of the rack (64) is fixedly connected to the sleeve rod (67). The guide cylinder (66) and the cylinder (68) are fixedly connected to the inner wall of the housing (61). The first spring (69) is sleeved on the outer surface of the cylinder (68). One end of the rotating rod (62) is fixedly connected to the knob (610). The bottom end of the front tube (1) is fixedly connected to several pile tips (101), the pile tips (101) are arranged in an array around the axis of the front tube (1), and three lifting holes (41) are opened on the outer surface of the collar (4). Screw holes are provided on both sides of the housing (61) and both sides of the lug (5), and a square hole matching the housing (61) is provided on the front of the lug (5). The ear (5) and ear canal (7) are fitted together with a gap, and the top of the connecting pipe (2) is also fixedly connected with a collar (4). The insertion hole (8) is adapted to the wedge (65), and the end of the sleeve (67) away from the rack (64) is inserted into the cylinder (68). One end of the first spring (69) abuts against the rack (64), and the other end of the first spring (69) abuts against the inner wall of the housing (61). The front of the housing (61) is concave, the rotating rod (62) passes through the front of the housing (61) and is fixedly connected to the knob (610), and a lock hole is opened on the end face of the knob (610). The locking assembly (6) further includes a pin (611), a second spring (612), a paddle (613), and a locking block (614). The pin (611) is inserted through the front of the housing (61), the second spring (612) is sleeved on the outer surface of the pin (611), and one end of the pin (611) is fixedly connected to the paddle (613), and the back of the paddle (613) is fixedly connected to the locking block (614).

2. The pile sleeve for foundation reinforcement according to claim 1, characterized in that: The top of the filling hopper (3) is welded with a lifting ring (31), and the bottom of the filling hopper (3) is also provided with an ear groove (7).

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