Segmented combined large-diameter precast pile and locking device thereof

Abstract

The application belongs to the technical field of precast piles, and discloses a segmented combined large-diameter precast pile and a locking device thereof, which comprises a plurality of groups of precast piles, the middle part of each precast pile is provided with a through hole, the inner wall of each precast pile is embeddedly provided with embedded steel bars, and the bottom of the lowermost precast pile is welded with a conical pile tip. The synchronous adjusting assembly, the upper combined end and the lower combined end and other structures are matched, which is beneficial to directly meshing the adjusting tooth ring to drive each group of combined gears to rotate, and the synchronous control of the bidirectional screw rod rotating and being embedded into the inner side of the threaded groove can be achieved through the rotating mode, so that the effect of rapid assembly is achieved. The welding frame can provide an installation position for the inner structure, the splicing column of the upper combined end is inserted into the inner side of the lower combined end during movement, the stability of combination is further improved through splicing, and the synchronous adjusting reverse screw rod structure can be used to shorten the time cost for installation and adjustment.

Description

Technical Field

[0001] This invention belongs to the field of precast pile technology, specifically a segmented combined large-diameter precast pile and its locking device. Background Technology

[0002] Precast piles are an important foundation structure for buildings. Precasting can effectively shorten the construction period, and piling equipment can effectively improve the construction efficiency of pile foundations. Due to road transportation limitations, large-diameter precast piles usually need to be spliced ​​in a segmented combination manner.

[0003] For example, invention publication number CN102383423A discloses a precast pile splicing structure, which includes a positioning ring precast around the splicing portion of the precast pile, and a connecting hoop sleeved around the two positioning rings of the two precast piles to be spliced. The connecting hoop is fastened to the positioning ring by multiple bolts. This precast pile splicing structure can ensure a firm splice between precast piles and that the spliced ​​portion meets the stress requirements.

[0004] The existing precast pile splicing structure uses connecting hoops to combine two sets of precast piles, and then uses bolts to combine them. When this is done, it requires sequential installation, which takes a long time. In addition, the existing screw-connected structure cannot rotate synchronously during installation, which requires additional equipment or tools for installation and increases the workload of workers.

[0005] Therefore, a segmented combined large-diameter precast pile and its locking device are proposed to solve the problems raised in the background technology. Summary of the Invention

[0006] To address the issues raised in the background section regarding the existing precast pile splicing structure, which uses connecting hoops to combine two sets of precast piles and then uses bolts for assembly, requiring sequential installation and taking considerable time, and the inability of existing screw-connected structures to rotate synchronously during installation, necessitating additional equipment or tools and increasing worker workload, this invention provides a segmented combined large-diameter precast pile and its locking device. The splicing method further enhances the stability of the assembly while ensuring synchronous adjustment of the reverse screw structure to shorten installation and adjustment time. By pulling with a connecting rope, the positioning wedge can be retracted into the inner side of the splicing frame, thereby unlocking and ejecting the reinforcing column, effectively increasing the strength of the connection area and enhancing axial shear force.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a segmented combined large-diameter precast pile, comprising several groups of precast piles, wherein a through hole is provided in the middle of the precast pile, and pre-embedded steel bars are embedded in the inner wall of the precast pile, and a conical pile tip is welded to the bottom of the lowest precast pile.

[0008] A locking device for a segmented combined large-diameter precast pile includes an upper combined end, which is fixedly installed on the top of the precast pile, and a lower combined end is fixedly installed on the bottom of the precast pile. A synchronous adjustment component is movably arranged between the upper combined end and the lower combined end.

[0009] The synchronous adjustment component includes a welded frame, with an adjusting gear ring rotatably mounted on the inner side of the welded frame edge. Several sets of combined gears are meshed on the inner side of the adjusting gear ring, and bidirectional screws are welded to the top and bottom of the combined gears. These bidirectional screws are rotatably mounted on the inner sides of the upper and lower combined ends, which are installed during the fabrication of precast piles. The structure's strength is maintained by concrete ties. The synchronous adjustment component allows for synchronized adjustment of the installation structure, effectively improving assembly efficiency. The welded frame provides the installation position for the internal structure. The gears mounted on the inner ring of the adjusting gear ring mesh with the combined gears. During the rotation of the adjusting gear ring, the gears drive the combined gears, which in turn drive the bidirectional screws to rotate synchronously. Synchronous rotation ensures that the upper and lower combined ends approach the welded frame at the same speed, maintaining a matched thread. Stabilizing rollers effectively increase the stability of the adjusting gear ring's rotation. An auxiliary adjustment groove provides an installation position for workers; by inserting tools into the auxiliary adjustment groove, the adjusting gear ring can be adjusted by pushing.

[0010] Preferably, a number of reinforcing ribs are welded and installed on the inner side of the welding frame, and the reinforcing ribs are located inside the number of combined gears. A number of combined bearings are embedded and installed on the inner side of the upper and lower ends of the welding frame, and the bidirectional screw is installed inside the combined bearings.

[0011] Preferably, the top and bottom of the adjusting gear ring are movably embedded with several sets of stabilizing rollers, and the stabilizing rollers are in close contact with the inner side of the welding frame, and the outer side of the adjusting gear ring is provided with an auxiliary adjusting groove.

[0012] Preferably, a trigger reinforcement component is fixedly installed on the inner side of the lower end of the upper assembly, and the trigger reinforcement component includes a limiting cylinder, and a strong spring is provided at the bottom of the inner side of the limiting cylinder. A movable column is movably provided on the top of the strong spring. The movable column is slidably disposed inside the limiting cylinder. A connecting rod is installed on the top of the movable column, and a reinforcement column is installed on the top of the connecting rod. The reinforcement column is movably located inside the lower assembly, and positioning grooves are provided on both sides of the reinforcement column.

[0013] Preferably, the trigger reinforcement component includes a splicing frame, and two sets of limiting frames are installed at the bottom of the inner side of the splicing frame, with auxiliary wheels rotatably arranged on the inner side of the limiting frames.

[0014] Preferably, a connecting rope is installed in the middle of the splicing frame, and the connecting rope is movably disposed on the inner side of the upper end of the auxiliary wheel, and a positioning wedge is installed at the end of the connecting rope.

[0015] Preferably, a pressure roller is movably provided at the top of the connecting rope, a downward pressure support rod is movably provided on the outside of the pressure roller, a baffle is installed at the top of the inner side of the splicing frame, and the baffle is located above the connecting rope, and a support spring is provided between the baffle and the positioning inclined block.

[0016] Preferably, several sets of welded steel bars are welded and installed on the side of the upper and lower combined ends near the precast pile, and the welded steel bars are welded together with the pre-embedded steel bars. Threaded grooves are opened on the side of the upper and lower combined ends near the bidirectional screw, and the bidirectional screw is rotatably arranged inside the threaded groove.

[0017] Preferably, the top of the inner side of the lower assembly end is provided with a combined tooth groove, the top of the upper assembly end is equipped with a splicing column, and the splicing column is movably spliced ​​on the inner side of the lower assembly end. The top of the splicing column is equipped with a combined tooth block, and the combined tooth block is spliced ​​on the inner side of the combined tooth groove.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] This invention, through the coordinated arrangement of a synchronous adjustment component, an upper assembly end, and a lower assembly end, facilitates the direct meshing of an adjusting gear ring to drive the rotation of each set of combined gears. This rotation allows for synchronous control of the bidirectional screw's rotation, embedding it into the threaded groove, achieving rapid assembly. A welding frame provides the installation position for the inner structure. The rotating adjusting gear ring, with its toothed structure, meshes and drives several sets of combined gears. The combined gears are connected to the welding frame via combined bearings. During rotation, the bidirectional screw rotates synchronously, moving synchronously along the threaded groove. During this movement, the splicing post at the upper assembly end inserts into the inner side of the lower assembly end, further enhancing the stability of the assembly through this splicing method. Simultaneously, it ensures synchronous adjustment of the reverse screw structure, shortening the installation and adjustment time.

[0020] This invention, through the coordinated use of trigger reinforcement components and synchronous adjustment components, facilitates the ejection of reinforcing columns originally retracted within the limiting cylinder by compression after assembly. The reinforcing columns, confined within the inner interface area of ​​the upper and lower assembly, further enhance the stability of the assembly. The limiting cylinder provides the installation position for the internal structure, and a powerful spring pushes the movable column, connecting rod, and reinforcing column upwards, confining them within the interface area. Positioning wedges within the splicing frame restrict the positioning grooves on the side of the reinforcing columns. During assembly, the lower assembly compresses the pressure bracket, pushing the pressure roller to push the connecting rope downwards. Pulling the connecting rope retracts the positioning wedges into the inner side of the splicing frame, thus unlocking and ejecting the reinforcing column. This effectively increases the strength of the connection area and enhances axial shear force. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 For the present invention Figure 1 Enlarged structural diagram at point A in the middle;

[0023] Figure 3 This is a schematic diagram of the upper assembly structure of the present invention;

[0024] Figure 4 This is a schematic cross-sectional view of the synchronization adjustment component of the present invention;

[0025] Figure 5 For the present invention Figure 4 Enlarged view of point B in the middle;

[0026] Figure 6 This is a schematic cross-sectional view of the trigger enhancement component of the present invention;

[0027] Figure 7 This is a schematic diagram of the cross-sectional structure of the splicing frame of the present invention;

[0028] Figure 8 This is a schematic diagram of the cross-sectional structure of the precast pile of the present invention.

[0029] In the diagram: 100, precast pile; 101, through hole; 102, embedded reinforcing bar; 103, tapered pile tip; 200, upper assembly end; 201, welded reinforcing bar; 202, lower assembly end; 203, combined tooth groove; 204, spliced ​​column; 205, combined tooth block; 207, threaded groove; 001, synchronous adjustment component; 300, adjusting tooth ring; 301, welded frame; 302, reinforcing rib; 303, combined bearing; 304, double-acting screw; 305, assembly. Gear; 306, Stabilizing Roller; 307, Auxiliary Adjustment Groove; 002, Trigger Reinforcement Component; 400, Reinforcing Column; 401, Limiting Cylinder; 402, High-Strength Spring; 403, Movable Column; 404, Connecting Rod; 405, Positioning Groove; 500, Positioning Inclined Block; 501, Splicing Frame; 502, Limiting Frame; 503, Auxiliary Wheel; 504, Connecting Rope; 505, Baffle; 506, Pressure Roller; 507, Lowering Support Rod; 508, Support Spring. Detailed Implementation

[0030] 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.

[0031] like Figures 1 to 8 As shown, the present invention provides a segmented combined large-diameter precast pile, including several groups of precast piles 100. A through hole 101 is opened in the middle of the precast pile 100, and a pre-embedded steel bar 102 is embedded in the inner wall of the precast pile 100. A conical pile tip 103 is welded to the bottom of the lowest precast pile 100.

[0032] The above scheme is adopted: the precast pile 100 is a segmented composite structure, which can be assembled into a pile foundation structure by splicing the upper and lower parts. The through hole 101 can reduce costs and weight, and at the same time provide an installation position for the limiting cylinder 401. The pre-embedded steel bar 102 and internal stirrups can effectively increase the strength of the precast pile 100. The conical pile tip 103 at the bottom can help push away the soil underground during installation and improve the efficiency of pile driving.

[0033] like Figure 2 - Figure 5 As shown, a locking device for a segmented combined large-diameter precast pile includes an upper combined end 200, which is fixedly installed on the top of the precast pile 100, and a lower combined end 202 is fixedly installed on the bottom of the precast pile 100. A synchronous adjustment component 001 is movably arranged between the upper combined end 200 and the lower combined end 202.

[0034] The synchronous adjustment component 001 includes a welding frame 301, and an adjustment gear ring 300 is rotatably provided on the inner side of the edge of the welding frame 301. Several sets of combined gears 305 are meshed on the inner side of the adjustment gear ring 300, and bidirectional screws 304 are welded and installed on the top and bottom of the combined gears 305. The bidirectional screws 304 are rotatably installed on the inner side of the upper combined end 200 and the lower combined end 202.

[0035] Several sets of reinforcing ribs 302 are welded and installed on the inner side of the welding frame 301, and the reinforcing ribs 302 are located inside the several sets of combined gears 305. Several sets of combined bearings 303 are embedded and installed on the inner side of the upper and lower ends of the welding frame 301, and the bidirectional screw 304 is installed inside the combined bearings 303.

[0036] The top and bottom of the adjusting gear ring 300 are movably embedded with several sets of stabilizing rollers 306, and the stabilizing rollers 306 are in close contact with the inner side of the welding frame 301. An auxiliary adjusting groove 307 is provided on the outer side of the adjusting gear ring 300.

[0037] The above scheme is adopted: the upper assembly end 200 and the lower assembly end 202 need to be installed when the precast pile 100 is manufactured. The strength of the structure is maintained by concrete tying. The synchronous adjustment component 001 can be used to control the synchronous adjustment of the installation structure, which effectively improves the assembly efficiency. The welding frame 301 can provide the installation position for the internal structure. The toothed blocks installed on the inner ring of the adjusting gear ring 300 can mesh with the combination gear 305 for assembly. During the rotation of the adjusting gear ring 300, the rotation of the toothed blocks will drive the combination gear 305 to rotate. During the rotation, it can drive the bidirectional screw 304 to rotate synchronously. Synchronous rotation can ensure that the upper assembly end 200 and the lower assembly end 202 approach the welding frame 301 at the same speed, keeping the threads in a matched state. The stabilizing roller 306 can effectively increase the stability of the rotation of the adjusting gear ring 300. The auxiliary adjustment groove 307 can provide the installation position for the workers. By inserting the tool into the auxiliary adjustment groove 307, the adjusting gear ring 300 can be adjusted by pushing.

[0038] like Figure 6 and Figure 7 As shown, a trigger reinforcement component 002 is fixedly installed on the inner side of the lower end of the upper assembly end 200. The trigger reinforcement component 002 includes a limiting cylinder 401. A strong spring 402 is provided at the bottom of the inner side of the limiting cylinder 401. A movable column 403 is movably provided at the top of the strong spring 402. The movable column 403 is slidably provided inside the limiting cylinder 401. A connecting rod 404 is installed at the top of the movable column 403. A reinforcement column 400 is installed at the top of the connecting rod 404. The reinforcement column 400 is movably located inside the lower assembly end 202. Positioning grooves 405 are provided on both sides of the reinforcement column 400.

[0039] The trigger reinforcement component 002 includes a splicing frame 501, and two sets of limit frames 502 are installed on the bottom of the inner side of the splicing frame 501. The inner side of the limit frame 502 is provided with an auxiliary wheel 503 for rotation.

[0040] A connecting rope 504 is installed in the middle of the splicing frame 501, and the connecting rope 504 is movably set on the inner side of the upper end of the auxiliary wheel 503. A positioning wedge 500 is installed at the end of the connecting rope 504.

[0041] A pressure roller 506 is movably installed on the top of the connecting rope 504, and a downward support rod 507 is movably installed on the outside of the pressure roller 506. A baffle 505 is installed on the top of the inner side of the splicing frame 501, and the baffle 505 is located above the connecting rope 504. A support spring 508 is provided between the baffle 505 and the positioning inclined block 500.

[0042] Using the above scheme: the trigger reinforcement component 002 can increase the Zener fixation after splicing by triggering the reinforcement structure during the adjustment process of the synchronous adjustment component 001; the limiting cylinder 401 can provide an installation position for the internal structure; the strong spring 402 can push the movable column 403 outward, and simultaneously push the control connecting rod 404 to place the reinforcement column 400 at the splicing point inside the upper assembly end 200 and the lower assembly end 202; the positioning groove 405 can provide a splicing position for the positioning inclined block 500, and after insertion, it can limit the reinforcement column 400; the splicing frame 501 can provide an installation position for the inner structure. The auxiliary wheel 503 can be restricted by the limiting bracket 502 to ensure that the auxiliary wheel 503 can rotate stably along the inner side. The connecting rope 504 is used to connect the positioning inclined block 500 to the inside of the splicing frame 501. The baffle 505 is used to restrict the support spring 508. The support spring 508 can be used to push the positioning inclined block 500 outward and embed it into the inner side of the positioning groove 405 for locking. The pressure roller 506 can be pushed by the pressing bracket rod 507 to push the connecting rope 504. When the connecting rope 504 is pressed down, it can pull the positioning inclined block 500 to retract along the inner side of the splicing frame 501.

[0043] like Figure 1 and Figure 8 As shown, several sets of welded steel bars 201 are welded and installed on the side of the upper assembly end 200 and the lower assembly end 202 near the precast pile 100, and the welded steel bars 201 are welded together with the pre-embedded steel bars 102. Threaded grooves 207 are opened on the side of the upper assembly end 200 and the lower assembly end 202 near the bidirectional screw 304, and the bidirectional screw 304 is rotatably arranged inside the threaded groove 207.

[0044] The top of the inner side of the lower assembly end 202 is provided with a combination tooth groove 203. The top of the upper assembly end 200 is equipped with a splicing column 204, and the splicing column 204 is movably spliced ​​on the inner side of the lower assembly end 202. The top of the splicing column 204 is equipped with a combination tooth block 205, and the combination tooth block 205 is spliced ​​on the inner side of the combination tooth groove 203.

[0045] The above scheme is adopted: the welded steel bar 201 can be welded to the pre-embedded steel bar 102. After welding, concrete is poured to ensure a stable connection between the upper assembly end 200, the lower assembly end 202 and the precast pile 100. The threaded groove 207 is used to provide an installation position for the bidirectional screw 304. By splicing the combined tooth block 205 into the inner side of the combined tooth groove 203, the stability can be effectively increased by the combination. By splicing the column 204, the strength and stability of the combination can be effectively guaranteed at the same time.

[0046] The working principle and usage process of this invention are as follows: First, the pile driver clamps the upper end of the precast pile 100 and drives it into the bottom surface using inertia. Then, the pile driver clamps another set of precast piles 100 and holds them above the bottom precast piles 100. The bidirectional screw 304 is aligned with each set of threaded grooves 207. The adjustment tool is inserted into the inner side of the auxiliary adjustment groove 307. The tool is used to control the adjustment gear ring 300 to rotate. When rotating, the tooth blocks on the inner side of the adjustment gear ring 300 will mesh and drive each set of combined gears 305 to rotate. The rotation will control the bidirectional screw 304 to be installed inside the threaded groove 207. During the installation process, the distance between the upper combined end 200 and the lower combined end 202 will be tightened and adjusted.

[0047] During continuous movement, the lower assembly end 202 will squeeze the lower support rod 507. During the downward pressing, the pressure roller 506 will push the connecting rope 504. Under the restriction of the auxiliary wheel 503, the positioning inclined block 500 will be pulled into the inner side of the splicing frame 501. After the positioning inclined block 500 separates from the positioning groove 405, the strong spring 402 inside the limiting cylinder 401 will push the movable column 403 and the connecting rod 404 outward. After outward, it will push the reinforcing column 400 to be embedded in the middle of the connection area between the lower assembly end 202 and the upper assembly end 200. During continuous installation, the splicing column 204 will move along the inner side of the lower assembly end 202. The combined tooth block 205 is embedded in the inner side of the combined tooth groove 203 to further increase stability. After continuing to rotate, the upper assembly end 200 and the lower assembly end 202 will be kept in close contact with the welding frame 301. After contact, the precast pile 100 will be driven into the ground again by the impact inertia of the pile driver.

[0048] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0049] 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 locking device for segmented combined large-diameter precast piles, applied to segmented combined large-diameter precast piles, comprising several groups of precast piles (100), wherein a through hole (101) is provided in the middle of each precast pile (100), and a pre-embedded steel bar (102) is embedded in the inner wall of each precast pile (100), and a conical pile tip (103) is welded to the bottom of the lowest precast pile (100), characterized in that: It includes an upper assembly end (200), which is fixedly installed on the top of the precast pile (100), and a lower assembly end (202) is fixedly installed on the bottom of the precast pile (100). A synchronous adjustment component (001) is movably arranged between the upper assembly end (200) and the lower assembly end (202). The synchronous adjustment component (001) includes a welding frame (301), and an adjustment gear ring (300) is rotatably provided on the inner side of the edge of the welding frame (301). Several sets of combined gears (305) are meshed on the inner side of the adjustment gear ring (300), and a bidirectional screw (304) is welded and installed on the top and bottom of the combined gear (305). The bidirectional screw (304) is rotatably installed on the inner side of the upper combined end (200) and the lower combined end (202). A trigger reinforcement component (002) is fixedly installed on the inner side of the lower end of the upper assembly end (200), and the trigger reinforcement component (002) includes a limiting cylinder (401), and a strong spring (402) is provided at the bottom of the inner side of the limiting cylinder (401). A movable column (403) is movably provided on the top of the strong spring (402). The movable column (403) is slidably provided on the inner side of the limiting cylinder (401). A connecting rod (404) is installed on the top of the movable column (403), and a reinforcing column (400) is installed on the top of the connecting rod (404). The reinforcing column (400) is movably located on the inner side of the lower assembly end (202), and positioning grooves (405) are provided on both sides of the reinforcing column (400). The trigger reinforcement component (002) includes a splicing frame (501), and two sets of limiting frames (502) are installed on the bottom of the inner side of the splicing frame (501). The inner side of the limiting frame (502) is rotatably provided with auxiliary wheels (503). A connecting rope (504) is installed in the middle of the splicing frame (501), and the connecting rope (504) is movably arranged on the inner side of the upper end of the auxiliary wheel (503). A positioning wedge (500) is installed at the end of the connecting rope (504). A pressure roller (506) is movably provided on the top of the connecting rope (504), and a downward support rod (507) is movably provided on the outside of the pressure roller (506). A baffle (505) is installed on the top of the inner side of the splicing frame (501), and the baffle (505) is located above the connecting rope (504). A support spring (508) is provided between the baffle (505) and the positioning inclined block (500).

2. The locking device for a segmented combined large-diameter precast pile according to claim 1, characterized in that: The inner side of the welding frame (301) is welded with several sets of reinforcing ribs (302), and the reinforcing ribs (302) are located inside the several sets of combined gears (305). Several sets of combined bearings (303) are embedded in the inner side of the upper and lower ends of the welding frame (301), and the bidirectional screw (304) is installed inside the combined bearings (303).

3. The locking device for a segmented combined large-diameter precast pile according to claim 2, characterized in that: The top and bottom of the adjusting toothed ring (300) are movably embedded with several sets of stabilizing rollers (306), and the stabilizing rollers (306) are closely attached to the inner side of the welding frame (301). An auxiliary adjusting groove (307) is provided on the outer side of the adjusting toothed ring (300).

4. The locking device for a segmented combined large-diameter precast pile according to claim 3, characterized in that: Several sets of welded steel bars (201) are welded and installed on the side of the upper assembly end (200) and the lower assembly end (202) near the precast pile (100), and the welded steel bars (201) are welded together with the pre-embedded steel bars (102). The upper assembly end (200) and the lower assembly end (202) are provided with threaded grooves (207) on the side of the double-acting screw (304), and the double-acting screw (304) is rotatably arranged inside the threaded groove (207).

5. The locking device for a segmented combined large-diameter precast pile according to claim 1, characterized in that: The lower assembly end (202) has a combined tooth groove (203) on the top of its inner side. The upper assembly end (200) has a splicing column (204) installed on its top, and the splicing column (204) is movably spliced ​​on the inner side of the lower assembly end (202). The splicing column (204) has a combined tooth block (205) installed on its top, and the combined tooth block (205) is spliced ​​on the inner side of the combined tooth groove (203).

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