Prestressed pipe pile precise butt joint and weld seam control tooling

Abstract

The utility model belongs to the butt joint technical field of pipe pile, concretely is a kind of pre-stressed pipe pile accurate butt joint and weld joint control frock, including the upper guide hoop and lower guide hoop of up-down concentric distribution, the upper guide hoop and lower guide hoop all include two arc hoops, and one side end between one of two arc hoops is rotatably connected, and the other one side end between two arc hoops is connected by fastener, and in the up-down direction between two arc hoops on the same side is connected by connecting piece connection.The utility model can guarantee that pipe pile joint is straight, and deformation is avoided, the quality of jointing is improved, the deformation of weld joint is avoided by constraint force, the effect of stable and control weld joint is reached, at the same time, the heat dissipation area is increased, so that weld joint can be more quickly and naturally heat dissipated, and weld crack caused by cooling shrinkage stress is prevented.

Description

Technical Field

[0001] This utility model relates to the field of pipe pile docking technology; specifically, this utility model relates to a tooling for precise docking and weld control of prestressed pipe piles. Background Technology

[0002] Pipe pile splicing, also known as pipe pile extension, refers to the process of connecting two or more prestressed pipe piles vertically at the construction site using a specific connection technique to achieve the designed pile length. In pipe pile splicing construction, the splicing operation not only affects the overall construction efficiency, but the splicing accuracy and stability directly affect the weld formation effect and quality, thus impacting the overall quality of the splicing project. Therefore, how to improve the construction efficiency of splicing while ensuring the splicing effect and weld quality is one of the important research directions in splicing engineering. In view of this, this application provides a tooling for precise pipe pile splicing and weld control. Utility Model Content

[0003] In view of this, the present invention provides a tooling for precise docking and weld control of prestressed pipe piles, thereby solving or at least alleviating the above-mentioned problems existing in the prior art.

[0004] To achieve the aforementioned objective, this utility model provides a tooling for precise docking and weld control of prestressed pipe piles, including an upper guide hoop and a lower guide hoop distributed concentrically in the vertical direction. Each of the upper and lower guide hoops includes two arc-shaped hoops. One end of each arc-shaped hoop is rotatably connected to the other end of the arc-shaped hoop, and the other end of the arc-shaped hoop is connected to the other end by a fastener. The two arc-shaped hoops located on the same side in the vertical direction are connected by a connector.

[0005] Preferably, the fastener includes a double-ended bolt and two fastening nuts, the double-ended bolt passing through the arc-shaped clamp, and the two fastening nuts threadedly installed on both sides of the double-ended bolt.

[0006] Preferably, the fastener further includes a fastening plate and a clamping nut. Two fastening plates are provided. The bottom of the fastening plate is provided with a through hole for fitting over the lower double-ended bolt. The two fastening plates are respectively fitted over both sides of the double-ended bolt. The fastening plate is provided with an opening groove on the side near the upper guide clamp, which can fit over the upper double-ended bolt. One clamping nut is threaded on both sides of each double-ended bolt, and the clamping nut presses the fastening plate onto the fastening nut.

[0007] Preferably, the connecting member comprises a lower connecting plate, a connecting groove and an upper connecting plate, two lower connecting plates are arranged at intervals on the outer side surface of the lower arc-shaped hoop, the connecting groove is arranged at the top of the lower connecting plate, the upper connecting plate is inserted into the connecting groove from outside to inside, the inserting direction of the upper connecting plate into the connecting groove faces the center of the arc-shaped hoop, and the upper connecting plate is connected with the upper arc-shaped hoop.

[0008] Preferably, a connecting bolt is rotatably connected to the outside of the upper arc-shaped hoop, and the upper connecting plate is threadedly mounted outside the connecting bolt.

[0009] Preferably, a cross bar is connected to a side of the upper connecting plate facing the arc-shaped hoop, a bar sleeve is slidably sleeved outside the cross bar, an inner end of the bar sleeve is fixedly connected with the upper arc-shaped hoop, a energy storage spring is arranged between the cross bar and the bar sleeve, an outer side notch of the connecting groove is outwardly expanded, and the upper connecting plate can provide a space for the swing of the upper arc-shaped hoop by moving outward in the connecting groove.

[0010] Preferably, a sleeve plate is fixedly connected to the inner end of the bar sleeve, the inner side and the top of the sleeve plate are open, the sleeve plate is embedded in the upper arc-shaped hoop, a guide plate is rotatably mounted in the sleeve plate, the inner end of the cross bar passes through the sleeve plate to contact the outer side surface of the guide plate, and when the guide plate is in a vertical state, the space required for the swing of the upper arc-shaped hoop is formed between the upper connecting plate and the connecting groove by extruding the cross bar.

[0011] Preferably, the upper connecting plate and the lower connecting plate are generally in a "匚"-shape.

[0012] Compared with the prior art, the present utility model has at least the following beneficial effects: 1. An upper guide hoop and a lower guide hoop are arranged at the pipe pile joint position, ensuring that the pipe pile joint position is straight without dislocation and guaranteeing the joint quality.

[0013] 2. Through the binding force formed by the upper guide hoop and the lower guide hoop, the effect of stabilizing and controlling a weld seam is achieved, meanwhile, the heat dissipation area is increased, so that the weld joint can dissipate heat naturally more rapidly, and weld cracks caused by cooling shrinkage stress are prevented. Description of the Drawings

[0014] With reference to the accompanying drawings, the disclosure of the present utility model will be more apparent. It should be understood that these drawings are for illustrative purposes only and are not intended to limit the scope of protection of the present utility model. In the drawings: Figure 1 is a schematic structural diagram of the first embodiment of the present utility model; Figure 2 is a partial exploded view of the first embodiment of the present utility model; Figure 3This is a schematic diagram of the structure of Embodiment 2 of the present invention; Figure 4 This is a partial cross-sectional view of Embodiment 2 of the present invention.

[0015] Reference numerals: 1-Upper guide clamp; 2-Lower guide clamp; 3-Double-ended bolt; 4-Fastening nut; 5-Fastening plate; 6-Pressure nut; 7-Through hole; 8-Open slot; 9-Lower connecting plate; 10-Connecting slot; 11-Upper connecting plate; 12-Connecting bolt; 13-Cross bar; 14-Bar sleeve; 15-Storage spring; 16-Sleeve plate; 17-Guide plate; 18-Connecting shaft. Detailed Implementation

[0016] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0017] like Figure 1 and Figure 2 As shown, Embodiment 1 provides a tooling for precise docking and weld control of prestressed pipe piles, including an upper guide hoop 1 and a lower guide hoop 2 that are centered vertically. Both the upper guide hoop 1 and the lower guide hoop 2 include two arc-shaped hoops. One end of the two arc-shaped hoops on the same side is rotatably connected, and the other end of the two arc-shaped hoops on the same side is connected by fasteners. The two arc-shaped hoops located on the same side in the vertical direction are connected by connectors.

[0018] When connecting prestressed concrete pipe piles, the upper pipe pile is first hoisted above the lower pipe pile. Then, the upper guide hoop 1 and lower guide hoop 2 are respectively fitted onto the bottom end of the upper pipe pile and the top end of the lower pipe pile. Next, the upper guide hoop 1 and lower guide hoop 2 are connected and tightened using fasteners. During this process, the upper guide hoop 1 and lower guide hoop 2 automatically align the upper and lower pipe piles. The upper pipe pile is then lowered so that its bottom end inserts into the top of the lower pipe pile. At this point, the upper guide hoop 1 and lower guide hoop 2 ensure that the upper and lower pipe piles remain aligned and also restrain deformation at the weld joint, achieving a stable and controlled weld. Furthermore, after welding, the upper guide hoop 1 and lower guide hoop 2 can better conduct heat at the weld joint, allowing the weld to dissipate heat more quickly and naturally under constraint, effectively preventing cracks caused by cooling shrinkage stress.

[0019] In this embodiment, the two arc-shaped hoops in the upper guide hoop 1 and the two arc-shaped hoops in the lower guide hoop 2 can be connected in a manner similar to hinges, so that one end of the fastener connecting the two arc-shaped hoops can be opened and closed.

[0020] A connecting shaft 18 is rotatably connected between the rotation centers of the two upper arc-shaped hoops and the rotation centers of the two lower arc-shaped hoops. This arrangement ensures that the rotation centers of the two upper arc-shaped hoops and the two lower arc-shaped hoops are practically aligned in the height direction, thereby effectively preventing misalignment between the upper guide hoop 1 and the lower guide hoop 2, and ensuring that the upper guide hoop 1 and the lower guide hoop 2 are always in a concentric state when closed.

[0021] Optionally, the fasteners include a double-ended bolt 3 and two fastening nuts 4. The double-ended bolt 3 passes through an arc-shaped hoop, and the two fastening nuts 4 are threaded onto both sides of the double-ended bolt 3. Specifically, the two ends of the double-ended bolt 3 pass through two arc-shaped hoops respectively, and the two fastening nuts 4 are located on the outer sides of the two arc-shaped hoops respectively. By rotating the two double-ended nuts, the two arc-shaped hoops are pressed inward, causing the upper guide hoop 1 and the lower guide hoop 2 to close.

[0022] Optionally, the fastener also includes a fastening plate 5 and a clamping nut 6. There are two fastening plates 5. The bottom of the fastening plate 5 is provided with a through hole 7 for fitting over the lower double-ended bolt 3. The two fastening plates 5 are respectively fitted over the two sides of the double-ended bolt 3. The fastening plate 5 is provided with an opening groove 8 on the side near the upper guide clamp 1, which can fit over the upper double-ended bolt 3. One clamping nut 6 is threaded on both sides of each double-ended bolt 3, and the clamping nut 6 presses the fastening plate 5 onto the fastening nut 4.

[0023] The fastening plate 5 is rotated upwards outside the lower double-ended bolt 3, so that the opening slot 8 fits onto the outside of the upper double-ended bolt 3. Then, the clamping nut 6 is tightened, pressing the fastening plate 5 against the outside of the fastening nut 4. At this time, the upper and lower ends of the fastening plate 5 connect the two double-ended bolts 3 respectively, thereby better stabilizing the upper and lower pipe piles in a concentric state.

[0024] Optionally, the connector includes a lower connecting plate 9, a connecting groove 10, and an upper connecting plate 11. The lower connecting plate 9 has two spaced-apart grooves on the outer side of the lower arc-shaped hoop. The connecting groove 10 is located on the top of the lower connecting plate 9. The upper connecting plate 11 is inserted into the connecting groove 10 from the outside to the inside, and the direction in which the upper connecting plate 11 is inserted into the connecting groove 10 faces the center of the arc-shaped hoop. The upper connecting plate 11 is connected to the upper arc-shaped hoop.

[0025] When the upper guide hoop 1 and the lower guide hoop 2 are in the closed state, the four connecting parts are in a centrally symmetrical state. Since the direction in which the upper connecting plate 11 is inserted into the connecting groove 10 is towards the center of the arc-shaped hoop, when the upper connecting plate 11 is inserted into the connecting groove 10, the upper connecting plate 11 cannot disengage from the connecting groove 10 during the opening or closing of the upper guide hoop 1 and the lower guide hoop 2, which are located on the same side, will rotate synchronously, so that the upper guide hoop 1 and the lower guide hoop 2 located on the same side can always be in a concentric state.

[0026] After the lower connecting plate 9 is pulled out of the connecting groove 10, the upper guide clamp can rotate independently relative to the lower guide clamp. During the pipe pile docking process, the lower guide clamp 2 can be fixed to the top of the lower pipe pile first, so that the upper guide clamp 1 is in the open state. When the bottom of the upper pipe pile is above the lower pipe pile and within the range of the lower guide clamp, the upper guide clamp 1 can be closed independently to align the upper pipe pile with the lower pipe pile. During the closing of the upper guide clamp 1, the upper connecting plate 11 can be pulled outward to make the inner end of the upper connecting plate 11 avoid the lower connecting plate 9 until the upper connecting plate 11 is aligned with the connecting groove 10, and then the upper connecting plate 11 is inserted into the connecting groove 10.

[0027] The upper arc-shaped hoop is rotatably connected to a connecting bolt 12, and the upper connecting plate 11 is threaded onto the outside of the connecting bolt 12. At this time, the position of the upper connecting plate 11 can be adjusted by rotating the connecting bolt 12, so that the upper connecting plate 11 can be inserted into or withdrawn from the connecting groove 10.

[0028] like Figure 3 and Figure 4 As shown, in Embodiment 2, a crossbar 13 is connected to the side of the upper connecting plate 11 facing the arc-shaped hoop. A sleeve 14 is slidably fitted on the outside of the crossbar 13. The inner end of the sleeve 14 is fixed to the arc-shaped hoop above. A storage spring 15 is provided between the crossbar 13 and the sleeve 14. The outer opening of the connecting groove 10 is outwardly flared. The upper connecting plate 11 can provide space for the arc-shaped hoop above to swing by moving outward within the connecting groove 10.

[0029] Under the action of the storage spring 15, the upper connecting plate 11 can be stably kept inserted into the connecting groove 10. The outer opening of the connecting groove 10 is set to be outwardly flared, so that the upper arc-shaped hoop can rotate independently relative to the lower arc-shaped hoop at a certain angle without the upper connecting plate 11 being completely pulled out of the connecting groove 10. At this time, after the upper arc-shaped hoop swings independently relative to the lower arc-shaped hoop at a certain angle, the upper connecting plate 11 will contact the side wall of the connecting groove 10 again, thereby limiting the swing of the upper arc-shaped hoop.

[0030] Optionally, a sleeve plate 16 is fixed to the inner end of the sleeve 14. The inner side and top of the sleeve plate 16 are open. The sleeve plate 16 is embedded in the upper arc-shaped hoop. A guide plate 17 is rotatably installed inside the sleeve plate 16. The inner end of the crossbar 13 passes through the sleeve plate 16 and contacts the outer side of the guide plate 17. When the guide plate 17 is in a vertical state, the space required for the upper arc-shaped hoop to swing is formed between the upper connecting plate 11 and the connecting groove 10 by squeezing the crossbar 13.

[0031] Before lifting and lowering the upper pipe pile, fix the lower guide hoop 2 to the top of the lower pipe pile first. At this time, the upper guide hoop 1 is in a closed state. Then insert the bottom end of the upper pipe pile downward into the upper guide hoop 1. During this process, the guide plate 17 can guide the bottom end of the upper pipe pile, so that the upper pipe pile can automatically align with the lower pipe pile. When the bottom end of the upper pipe pile is inserted into the upper guide hoop 1, the guide plate 17 is squeezed into a vertical state by the upper pipe pile. At this time, the guide plate 17 squeezes the cross bar 13 outward, so that the upper connecting plate 11 is displaced outward in the connecting groove 10 to form a space for the swing of the upper arc-shaped hoop. Therefore, during the lowering process of the upper pipe pile, the upper arc-shaped hoop can swing slightly, which reduces the wear on the surface of the upper pipe pile and further facilitates the lowering of the upper pipe pile. When the upper pipe pile is lowered to the state of being butted with the lower pipe pile, the upper arc-shaped hoop is fixed by fasteners, so that the upper pipe pile and the lower pipe pile can be centered and fixed.

[0032] Optionally, the upper connecting plate 11 and the lower connecting plate 9 are generally in a "匚"-shape. With this arrangement, the gap between the upper connecting plate 11 and the lower connecting plate 9 can be completely exposed, and there is a large space between the lower connecting plate 9 and the pipe pile, which is convenient for workers to perform welding operations.

[0033] The technical scope of the present utility model is not limited to the content in the above description. Those skilled in the art can make various variations and modifications to the above embodiments without departing from the technical idea of the present utility model, and all these variations and modifications shall fall within the scope of the present utility model.

Claims

1. A tooling system for precise butt welding and weld control of prestressed pipe piles, characterized in that, It includes an upper guide hoop (1) and a lower guide hoop (2) that are arranged concentrically. Both the upper guide hoop (1) and the lower guide hoop (2) include two arc-shaped hoops. One end of the two arc-shaped hoops on the same side is rotatably connected, and the other end of the two arc-shaped hoops on the same side is connected by a fastener. The two arc-shaped hoops located on the same side in the vertical direction are connected by a connector.

2. The tooling for precise butt welding and weld control of prestressed pipe piles as described in claim 1, characterized in that, The fastener includes a double-ended bolt (3) and two fastening nuts (4), the double-ended bolt (3) passing through the arc-shaped hoop, and the two fastening nuts (4) being threaded onto both sides of the double-ended bolt (3).

3. The tooling for precise butt welding and weld control of prestressed pipe piles as described in claim 2, characterized in that, The fastener also includes a fastening plate (5) and a clamping nut (6). There are two fastening plates (5). The bottom of the fastening plate (5) is provided with a through hole (7) for fitting over the lower double-ended bolt (3). The two fastening plates (5) are respectively fitted on both sides of the double-ended bolt (3). The fastening plate (5) near the upper guide clamp (1) is provided with an opening groove (8) that can fit over the upper double-ended bolt (3). The clamping nut (6) is threaded on both sides of each double-ended bolt (3), and the clamping nut (6) presses the fastening plate (5) onto the fastening nut (4).

4. The tooling for precise butt welding and weld control of prestressed pipe piles as described in claim 1, characterized in that, The connector includes a lower connecting plate (9), a connecting groove (10), and an upper connecting plate (11). The lower connecting plate (9) has two spaced-apart grooves on the outer side of the lower arc-shaped hoop. The connecting groove (10) is located on the top of the lower connecting plate (9). The upper connecting plate (11) is inserted into the connecting groove (10) from the outside to the inside, and the direction in which the upper connecting plate (11) is inserted into the connecting groove (10) is towards the center of the arc-shaped hoop. The upper connecting plate (11) is connected to the upper arc-shaped hoop.

5. The tooling for precise butt welding and weld control of prestressed pipe piles as described in claim 4, characterized in that, The upper arc-shaped hoop is externally connected to a connecting bolt (12), and the upper connecting plate (11) is threaded onto the outside of the connecting bolt (12).

6. The tooling for precise butt welding and weld control of prestressed pipe piles as described in claim 4, characterized in that, The upper connecting plate (11) is connected to a crossbar (13) on the side facing the arc-shaped hoop. A sleeve (14) is slidably fitted on the outside of the crossbar (13). The inner end of the sleeve (14) is fixed to the arc-shaped hoop above. A storage spring (15) is provided between the crossbar (13) and the sleeve (14). The outer groove of the connecting groove (10) is outwardly flared. The upper connecting plate (11) can provide space for the arc-shaped hoop above to swing by displacing outward in the connecting groove (10).

7. The tooling for precise butt welding and weld control of prestressed pipe piles as described in claim 6, characterized in that, The inner end of the sleeve (14) is fixedly connected to a sleeve plate (16). The inner side and top of the sleeve plate (16) are open. The sleeve plate (16) is embedded in the upper arc-shaped hoop. A guide plate (17) is rotatably installed inside the sleeve plate (16). The inner end of the crossbar (13) passes through the sleeve plate (16) and contacts the outer side of the guide plate (17). When the guide plate (17) is in a vertical state, the space required for the upper arc-shaped hoop to swing is formed between the upper connecting plate (11) and the connecting groove (10) by squeezing the crossbar (13).

8. The tooling for precise butt welding and weld control of prestressed pipe piles as described in claim 4, characterized in that, The upper connecting plate (11) and the lower connecting plate (1) are generally in a "匚" shape.

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