Construction method pile profile steel pulling-out device

Abstract

The utility model relates to the field of construction method pile profile steel pulling, in particular to a construction method pile profile steel pulling device which comprises a hoisting hole formed in the upper portion of a web plate of the device, wing plates located on the two sides of the web plate, clamping plates located below the wing plates on the two sides and reinforcing holes formed in the clamping plates. The clamping plate below the wing plate and the wing plate are welded together, and the reinforcing hole is aligned with a hoisting hole of the construction method pile and is tightened and reinforced through a bolt. The hydraulic device solves the problems that the structural steel is broken due to the fact that stress is excessively concentrated in the pulling process of the construction method pile I-shaped steel and the structural steel is difficult to pull out due to the fact that the hydraulic device is difficult to install under the narrow condition, and the construction method pile structural steel pulling process is safer and more reliable.

Description

Technical Field

[0001] The utility model relates to the field of extraction of H-shaped steel for diaphragm wall construction method, in particular to an extraction device for H-shaped steel of diaphragm wall construction method. Background Art

[0002] In the deep foundation pit project, a diaphragm wall construction method retaining structure is adopted, and the structure roof is higher than the capping beam elevation. The exposed part of the H-shaped steel of the diaphragm wall construction method is insufficient, and conventional oil jacks cannot be used for extraction. It is difficult to install hydraulic devices under narrow conditions, resulting in difficulty in extracting the H-shaped steel. This has an impact on subsequent processes and structural quality. Generally, the extraction methods of hydraulic presses and pile extractors are prone to problems such as overly concentrated stress or being restricted by narrow sites, resulting in the inability to install hydraulic devices and thus unable to extract.

[0003] An auxiliary device for extracting SMW method H-shaped steel with the patent application number CN201420051085.1 includes an extension piece and several connecting rods. The extension piece includes a web and four limb flange plates located on both sides of the web. Bolt holes are respectively opened on both sides of the bottom ends of the four limb flange plates. Bolt holes are opened at both ends of the several connecting rods. The bolt holes at one end of the several connecting rods correspond to the bolt holes on the four limb flange plates, and the several connecting rods are fixed to the four limb flange plates through bolts. The bolt holes at the other end of the several connecting rods correspond to the bolt holes on the H-shaped steel to be extracted, and the several connecting rods are fixed to the H-shaped steel to be extracted through bolts. The fixed four limb flange plates of the above device result in a fixed device size and cannot adapt to narrower areas. Therefore, it is urgent for those skilled in the art to solve the above technical problems. Summary of the Utility Model

[0004] To solve the technical problem in the above-mentioned prior art that the device size is fixed and cannot adapt to narrower areas.

[0005] The present application provides an extraction device for H-shaped steel of diaphragm wall construction method, which includes a lifting hole arranged above the web of the device, wing plates located on both sides of the web, clamping plates located below the two wing plates, reinforcement holes arranged on the clamping plates. The web and the wing plates are an integral body. The clamping plates below the wing plates are welded to the wing plates. The reinforcement holes are aligned with the connection holes of the diaphragm wall construction method pile and tightened and reinforced with bolts.

[0006] Further, a plurality of reinforcement holes are arranged on the clamping plates.

[0007] Multiple reinforcement holes allow users to select the most suitable hole positions for connection according to the specific dimensions of the secant pile, enabling the device to adapt to secant piles of different sizes and shapes. Using multiple reinforcement holes and fastening with bolts can ensure a more stable connection between the device and the secant pile. Especially when dealing with larger or heavier secant piles, more reinforcement points mean that the force can be more evenly distributed across the entire device, thus reducing the risk of the device slipping or falling off during operation. Users can choose the appropriate reinforcement holes according to the actual situation to better position and adjust the device to ensure its correct alignment with the secant pile.

[0008] Furthermore, positioning holes and sliding grooves are also provided on the clamping plate. The clamping plate is slidably arranged on the sliding groove. Multiple positioning holes are provided on the wing plate, and bolts pass through the positioning holes to connect the wing plate and the clamping plate.

[0009] By sliding the clamping plate on the sliding groove, the position of the clamping plate can be adjusted to adapt to secant piles of different sizes, making the device more widely applicable. The combination of the positioning holes and the sliding groove can ensure that the clamping plate is fixed in the appropriate position, avoiding deviation during operation and helping with precise alignment. By connecting the wing plate and the clamping plate through bolts passing through the positioning holes on the wing plate and the clamping plate, a stable connection can be ensured between the two, and it can remain stable even under external forces during operation. This design allows the operator to quickly adjust the position of the clamping plate as needed and fix it with bolts, simplifying the operation process and improving work efficiency. The stable connection method and precise alignment ability help reduce accidents during operation and improve overall safety. When it is necessary to replace or adjust the clamping plate, it can be easily achieved by loosening the bolts, which simplifies the maintenance process and reduces maintenance costs. The positioning holes at different positions can adapt to secant piles of different sizes, enabling the same device to be applied to multiple scenarios and enhancing its versatility.

[0010] Furthermore, the clamping plate includes a left clamping plate and a right clamping plate, and the distance between the left clamping plate and the right clamping plate is 0.5 - 1 cm larger than the side plate of the profiled steel.

[0011] By maintaining a certain gap, direct contact between the clamping plate and the profiled steel can be reduced, thereby reducing wear and extending the service life of the clamping plate. The larger distance makes it easier to adjust the position of the clamping plate. The operator can quickly make adjustments according to the actual situation, improving work efficiency. There is enough space to observe the position relationship between the profiled steel and the clamping plate, which helps ensure that the profiled steel is correctly fixed. When it is necessary to disassemble the device from the profiled steel, the larger distance makes the operation more convenient, and the clamping plate can be easily separated from the profiled steel. Maintaining a certain gap can reduce the concentration of stress on the profiled steel, helping to protect the profiled steel from damage.

[0012] Furthermore, the lifting holes are opened at the middle position of the upper part of the web, and multiple lifting holes are provided.

[0013] The lifting holes are located at the middle position of the web, which helps to ensure that the device remains balanced during lifting, reducing the possibility of tilting or swinging. The lifting holes at the middle position are easier to find and align, making the lifting process smoother. Multiple lifting holes can disperse the load during lifting, reducing the excessive pressure on a single lifting point, thereby improving the safety of lifting.

[0014] Furthermore, elongated holes are also provided on the clamping plates, and the elongated holes are located below the reinforcement holes.

[0015] The presence of the elongated holes allows users to increase the overall length of the clamping plates by connecting additional clamping plates. This enables flexible adjustment of the clamping plate length according to the actual size of the secant pile wall. For longer secant pile walls or secant pile walls with special shapes, the design of the elongated holes enables the device to adapt to a wider range of application scenarios. By simply connecting additional clamping plates, the operator can easily extend the length of the device without having to replace the entire device. By extending rather than replacing the entire device, costs can be saved, especially in cases where secant pile walls of different sizes need to be processed. The design of the elongated holes allows the operator to quickly connect additional clamping plates to the original clamping plates, simplifying the operation process. The lengthened clamping plates can better fix the secant pile wall, ensuring that instability or safety accidents do not occur due to insufficient clamping plate length during the extraction process.

[0016] The beneficial effects of the present utility model compared with the prior art are as follows:

[0017] 1. This application effectively solves the situation where a hydraulic device cannot be installed in a narrow terrain, resulting in the inability to extract.

[0018] 2. This application effectively distributes the pulling force evenly during extraction by aligning several reinforcement holes with the steel section lifting holes and using spiral reinforcement to prevent the problem of steel section breakage caused by excessive concentrated force during the extraction process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of the present utility model;

[0020] Figure 2 is a schematic structural diagram after the present utility model is assembled with the steel section;

[0021] Figure 3 is a schematic working diagram of the device;

[0022] Figure 4 is a left view of the present utility model after the clamping plate is lengthened.

[0023] The reference numerals in the figure are: 1 - lifting rope; 2 - web; 3 - lifting hole; 4 - flange; 41 - positioning hole; 42 - chute; 5 - clamping plate; 51 - left clamping plate; 52 - right clamping plate; 6 - reinforcement hole; 61 - elongated hole. Specific implementation mode

[0024] The following further elaborates on the present utility model in detail in conjunction with the attached drawings and specific preferred implementation modes.

[0025] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by terms such as "left side", "right side", "upper part", "lower part", etc. are based on the orientation or positional relationships shown in the attached drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. "First", "second", etc. do not represent the importance of components, so it cannot be understood as a limitation to the present utility model. The specific dimensions adopted in this embodiment are only for illustrating the technical solution by way of example and do not limit the protection scope of the present utility model.

[0026] Embodiment 1: To solve the problem that it is difficult to connect the H-section steel in a narrow space with a crane and a hoist, resulting in difficulty in pulling out the H-section steel, this embodiment proposes a device for pulling out the H-section steel of a secant pile wall. Referring to Figure 1 , Figure 2 , Figure 3 and Figure 4 , it can be seen that the web 2 is the main supporting part of the device, and a lifting hole 3 is provided above it for connecting the lifting equipment;

[0027] The flanges 4 are located on both sides of the web 2 and form an integral structure with the web;

[0028] The clamping plate 5 is located below the flange 4 and is welded to the flange for clamping the secant pile wall;

[0029] Reinforcement holes 6 are provided on the clamping plate 5 for aligning with the connection holes on the secant pile wall and tightening with bolts to reinforce the connection. Confirm that all components are intact, and the web 2, flanges 4, clamping plate 5, and lifting hole 3 are all in good condition;

[0030] Prepare necessary tools such as bolts and wrenches. Adjust the position of the clamping plate 5 according to the size of the secant pile wall to ensure that the clamping plate can cover the side of the secant pile wall; align the reinforcement holes 6 on the clamping plate 5 with the connection holes of the secant pile wall;

[0031] Pass a bolt through the reinforcement hole 6 and the connection hole of the soil mixing pile, and tighten it to fix the splint 5. Select a suitable lifting hole 3; pass a sling or a hook through the lifting hole 3 and fix it. Use a crane or a hoist to slowly lift the device, ensuring that the soil mixing pile rises smoothly. Monitor the lifting process to ensure that the soil mixing pile does not tilt or shake; continue to lift until the soil mixing pile is completely off the ground, and then carefully move the soil mixing pile to the designated position and slowly lower it. Once the soil mixing pile is in place, release the sling or the hook; loosen the bolt on the splint 5 and remove the device;

[0032] Embodiment 2: The difference between this embodiment and Embodiment 1 is that in Embodiment 1, the splint 5 is fixed under the wing plate 4, making it difficult to adjust the position of the splint 5. When connecting the device to the H-beam, the reinforcement hole 6 may not be aligned with the connection hole on the H-beam. Therefore, a chute 42 is provided on the wing plate 4, and the splint 5 is provided with a protrusion corresponding to the chute 42. The splint 5 is clamped in the chute 42 to ensure that the splint 5 can slide in the chute 42. After the splint 5 slides to the designated position, pass a bolt through the positioning hole 41 to connect the splint 4 and the wing plate 4 together. At this time, the position of the splint 5 is adjustable, so it can be more conveniently aligned with the connection hole of the H-beam without replacing the splint 5.

[0033] Embodiment 3: The difference from Embodiment 1 and Embodiment 2 is that when the splint 5 is directly aligned with the H-beam, it may be difficult to insert. Therefore, to ensure smooth insertion, referring to Figure 2 , it can be seen that the opening distance between the left splint 51 and the right splint 52 of the splint 5 is set to be 0.5 cm larger than the side plate of the H-beam. At this time, the splint 5 can conveniently insert the H-beam into the opening of the splint.

[0034] Embodiment 4: During hoisting, connecting a single lifting hole 3 to the crane may cause unstable connection of the H-beam. Therefore, two lifting holes 3 are provided at the middle position of the upper part of the web 2. Select two lifting holes 3 on the web as the lifting points. According to the required lifting height and angle, select a suitable lifting hole 3, pass a sling or a hook through the selected lifting hole 3, and ensure that the sling or the hook is firmly fixed on the lifting hole 3. To ensure stability, it is recommended to use two slings or hooks to connect the two lifting holes 3 respectively.

[0035] Embodiment 5: To adapt to a narrower space environment, a lengthening hole 61 is provided below the reinforcement hole 6 of the splint 5. When the length of the splint 5 needs to be extended, obtain a splint 5 and connect the two through bolts. The lengthening hole 61 of the other splint 5 serves as the reinforcement hole 6 for the lengthened splint 5;

[0036] Observe whether the observation splint 5 is suitable for the environment. If the length of the splint 5 is not convenient for the crane to connect to the lifting hole 3, the splint 5 needs to be lengthened. If the splint 5 needs to be lengthened, obtain an additional splint 5, align the additional splint 5 with the original splint 5, ensure that the lengthening hole 61 of the existing splint 5 is aligned with the reinforcement hole 6 of the new splint 5, use bolts to pass through the lengthening hole 61 to connect the two splints 5, ensure that the connection is stable and reliable, use bolts to pass through the reinforcement hole 6 on the lengthened splint 5 and the connection hole of the diaphragm wall steel section, and tighten to fix the lengthened splint 5. Check again whether all connection points are firm.

[0037] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection required by the present invention is defined by the appended claims and their equivalents.

Claims

1. A construction method pile steel extraction device, characterized in that: The device comprises a lifting hole (3) arranged above the web (2), wing plates (4) located on both sides of the web (2), a clamping plate (5) located below the wing plates (4) on both sides, and a reinforcement hole (6) arranged on the clamping plate (5). The web (2) and the wing plates (4) are an integral whole. The clamping plate (5) below the wing plates (4) is welded to the wing plates (4). The reinforcement hole (6) is aligned with the connection hole of the construction method pile steel and is tightened and reinforced with bolts.

2. The method pile steel extraction device according to claim 1 is characterized in that: The clamping plate (5) is provided with a plurality of reinforcement holes (6).

3. The method pile steel extraction device according to claim 2 is characterized in that: The clamping plate is also provided with a positioning hole and a slide groove (42), the clamping plate (5) is slidably arranged on the slide groove, the wing plate (4) is provided with a plurality of positioning holes (41), and bolts pass through the positioning holes (41) to connect the wing plate (4) and the clamping plate (5).

4. The method pile steel extraction device according to claim 1 is characterized in that: The clamping plate comprises a left clamping plate (51) and a right clamping plate (52), and the distance between the left clamping plate (51) and the right clamping plate (52) is 0.5-1 cm larger than that of the steel side plate.

5. The method pile steel extraction device according to claim 1 is characterized in that: The hoisting hole (3) is opened at the middle position of the upper part of the web (2), and a plurality of the hoisting holes (3) are provided.

6. The construction method pile steel extraction device according to claim 5, characterized in that: The clamping plate (5) is also provided with an elongated hole (61), and the elongated hole is located below the reinforcement hole (6).

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