Coastal historical block repairing construction stabilizing device

Abstract

The invention relates to the technical field of ancient building repair construction, and discloses a coastal historical block repair construction stabilizing device which comprises a connecting cylinder and a positioning sliding rail, a lifting column is movably connected in the connecting cylinder in a sleeved mode, a supporting plate is arranged on the side wall of the connecting cylinder, a vertical notch is formed in one side of the connecting cylinder, and the positioning sliding rail is arranged in the connecting cylinder. The supporting plate is in sliding connection with a lifting wedge block, and the lifting wedge block is inserted into the bottom of the lifting column through the notch. According to the coastal historical block repairing construction stabilizing device, the wedge block mechanisms arranged on the supporting points are sequentially driven through the driving vehicle capable of moving along the track, and cyclic and micro jacking operation with controlled jacking force on the multiple supporting points is achieved. According to the method, low-cost and high-precision synchronous control and overload protection are achieved through a simple mechanical structure, meanwhile, the method adapts to different field conditions through a convertible supporting structure, and the problem of safe jacking construction on the premise that historical ground pavement is protected is particularly solved.

Description

Technical Field

[0001] This application relates to the field of ancient building restoration and construction technology, and in particular to a stabilizing device for the restoration and construction of coastal historical blocks. Background Technology

[0002] Arcade buildings, or "qilou," are a distinctive modern commercial and residential architectural style found in the coastal areas of southern China, often hailed as a "living fossil of Chinese and Western architecture." Their typical structural feature is a ground floor set back from the street level, creating a continuous public pedestrian passageway, with the second and upper floors cantilevered over this passageway. The paving of these passageways typically uses materials such as terrazzo, mosaic, red bricks (large bricks), or granite slabs. These paving materials not only facilitate passage but also form an important part of the historical character of the arcade buildings, possessing extremely high cultural relic preservation value.

[0003] Having withstood a century of wind and rain, many arcade-style neighborhoods face serious structural aging problems, mainly manifested in steel reinforcement corrosion, concrete carbonization and loosening, and beam-column joints. During emergency reinforcement or repair work, temporary support systems are typically installed to prevent brittle failure or collapse of the existing aging columns under load. The core technology of this system is to actively bear the load of the upper beams and slabs through a jacking device, effectively "unloading" the original columns and thus providing safe space for subsequent replacement and reinforcement work.

[0004] However, existing arcade support and jacking technologies have significant technical bottlenecks and contradictions in practical applications:

[0005] First, localized asynchronous jacking poses extremely high structural safety risks. The overall integrity of arcade structures is poor; single-point or asynchronous jacking can lead to a rapid redistribution of internal stress. When the jacking exceeds the elastic deformation range of the beam (usually only a few millimeters), excessive secondary internal forces can easily be generated in adjacent unsupported areas, causing beam cracking and joint shear failure. Especially in cases of extremely fragile building structures or improper operation by construction workers (such as excessive jacking), even a small displacement difference can trigger a progressive collapse. Although manual "fine-tuning" attempts to control the risk, it is difficult to guarantee the height consistency of multi-point jacking, failing to meet the requirements of precise protection. High-precision synchronous jacking technology is costly and difficult to implement. To eliminate stress concentration caused by asynchrony, the engineering community has introduced computer-controlled hydraulic synchronous jacking systems, which control all jacks to rise at the same rate (e.g., 1 mm / min) to achieve overall translation of the beam frame. However, the purchase and rental costs of such equipment are extremely high, and operation is complex, making it an excessive economic burden for numerous scattered, small-scale arcade renovation projects, hindering its widespread adoption.

[0006] Finally, there is a serious conflict between the existing support foundation construction and the requirements for cultural relic protection. Both traditional support systems and synchronous jacking systems require a stable foundation on the passageway floor to withstand the enormous reaction forces. Traditional methods often require excavating the existing terrazzo, mosaic, or red brick paving layers to pour concrete foundations or bury ground anchors. This "destructive" construction method directly damages the most historically characteristic ground features of the arcade buildings, violating the core principles of "minimal intervention" and "authentic preservation" in cultural relic restoration. Summary of the Invention

[0007] This application proposes a stabilization device for the renovation and construction of coastal historical districts. It utilizes a track-moving drive vehicle to sequentially drive wedge mechanisms arranged at various support points, enabling cyclical, micro-volume, and controlled lifting operations at multiple support points. This method achieves low-cost, high-precision synchronous control and overload protection with a simple mechanical structure. Furthermore, its adaptable support structure allows for adaptation to different site conditions, effectively solving the challenge of safe lifting construction while protecting historical pavement.

[0008] To achieve the above objectives, this application adopts the following technical solution: a stabilizing device for the renovation and construction of a coastal historical district, comprising a connecting cylinder and a positioning slide rail. The connecting cylinder is installed on a supporting structure, and a lifting column is movably sleeved inside the connecting cylinder. A support plate is provided on the side wall of the connecting cylinder, and a vertical notch is provided on one side of the connecting cylinder. A lifting wedge is slidably connected to the support plate. The lifting wedge is inserted into the bottom of the lifting column through the notch and has a self-locking capability after being inserted into the lifting column. A pressure wedge is connected to the end of the lifting wedge. A moving trolley is slidably connected to the positioning slide rail. Pull ropes are connected to both ends of the moving trolley, and the pull ropes are connected to a drive structure. A telescopic rod that can extend and retract is provided on the moving trolley. A compression wedge is connected to the end of the telescopic rod. The compression wedge and the pressure wedge are opposite to each other and can compress each other. An adjustment component is provided on the moving trolley, which can adjust the force required for the telescopic rod to retract and extend it to its reset position.

[0009] Furthermore, threaded sleeves are provided between the pressure wedge, the lifting wedge, the extrusion wedge, and the telescopic rod. Rotating the threaded sleeves allows adjustment of the position of the pressure wedge or the extrusion wedge. This facilitates adjustment of the position of the pressure wedge, ensuring that the distance between each pressure wedge and the lifting wedge is the same. Simultaneously, after each round of adjustment, the position of the extrusion wedge can be adaptively adjusted.

[0010] Furthermore, when the extrusion wedge drives the pressure wedge, the distance the pressure wedge moves in a single movement is no more than 5mm. After completing one round of lifting, the position of the extrusion wedge is adjusted, and the adjustment distance is no more than 5mm.

[0011] The supporting structure is a column, with a support plate fixedly installed on top of the column. The outer wall of the connecting cylinder has a flange, which is connected to the support plate by fastening bolts. The connecting cylinder and the lifting column are detachably connected to the column for easy replacement and maintenance.

[0012] Furthermore, the support structure is cantilevered, the upright can be connected to the ground anchor via a rope, the support plate is connected to the support arm via a mounting base, and the bottom of the positioning slide rail is connected to the support arm via a connecting block. The positioning slide rail and the connecting block are rotatably connected to adapt to the angle of the support arm, and the relative angle between the support plate and the connecting cylinder can be adjusted. Specifically, the support plate has multiple sets of mounting holes, and the angle of the connecting cylinder can be adjusted during installation to make the lifting wedge perpendicular to the positioning slide rail.

[0013] Furthermore, the adjustment component includes a hydraulic cylinder installed inside the mobile vehicle. The hydraulic cylinder is connected to a pressure chamber, and a plunger is installed inside the pressure chamber. Below the plunger is a liquid chamber connected to the hydraulic cylinder, and above the plunger is an air chamber. A pressure sensor is installed inside the air chamber to monitor the lifting force for each lift.

[0014] Furthermore, a pressure sensor is installed inside the air cavity.

[0015] Furthermore, the pallet is provided with a guide groove, and the bottom of the lifting wedge is provided with a limiting slider corresponding to the guide groove.

[0016] Furthermore, the bottom of the lifting wedge is provided with a connecting wedge, and the connecting cylinder is provided with a groove corresponding to the bottom of the lifting wedge to accommodate the sliding of the connecting wedge. The groove is provided with adjusting wedges on both sides of the end position of the connecting wedge. When one adjusting wedge is inserted, it can lock the connecting wedge and prevent the lifting wedge from retracting, thus improving safety. When the other is inserted, it can push the lifting wedge out.

[0017] Furthermore, the adjusting wedge is connected to a screw, and the screw is connected to an adjusting nut, which is located on the outside of the connecting cylinder.

[0018] The beneficial effects of this invention are as follows:

[0019] This application provides a stabilizing device for the renovation and construction of coastal historical blocks. A connecting cylinder and a positioning slide rail are installed on the supporting structure. A lifting column driven by a lifting wedge is installed inside the connecting cylinder. A trolley is installed on the positioning slide rail, and the trolley is equipped with a pressing wedge that can drive the lifting wedge to move. The trolley is driven by a driving structure to move, causing the pressing wedge to press against the lifting wedge, thus achieving a slight lifting of the lifting column. The height of each lifting cycle does not exceed 1.25mm, providing high lifting safety. After each lifting cycle, the relative position of the pressing wedge is adjusted, and the lifting is performed again, making the operation convenient and quick.

[0020] By limiting the maximum pressure of the squeezing wedge, the force can be released in time during lifting when the load changes rapidly with the lifting process, stopping the lifting and preventing further deterioration of the stress distribution, thus reducing operational risks.

[0021] The connecting cylinder can be installed on both vertical columns and cantilevered structures. When the ground paving has high historical value, it can be supported by the cantilever to avoid damage to the ground paving. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort:

[0023] Figure 1 This is a schematic diagram of Embodiment 1 of the present invention;

[0024] Figure 2 This is a schematic diagram of the pallet and connecting cylinder in Embodiment 1 of the present invention.

[0025] Figure 3 This is a schematic diagram of the adjustment component in Embodiment 1 of the present invention;

[0026] Figure 4 This is a schematic diagram of Embodiment 2 of the present invention;

[0027] Figure 5 This is a partial view of Embodiment 2 of the present invention;

[0028] Figure 6 This is a schematic diagram of the guide groove in Embodiment 2 of the present invention;

[0029] Figure 7 This is a schematic diagram of the assembly base, support plate, and connecting cylinder in Embodiment 2 of the present invention;

[0030] Figure 8 This is a three-dimensional schematic diagram of the assembly base, support plate, and connecting cylinder in Embodiment 2 of the present invention.

[0031] In the diagram: 1. Column; 2. Support plate; 3. Connecting cylinder; 4. Lifting column; 5. Lifting wedge; 6. Adjusting component; 601. Hydraulic cylinder; 602. Air valve; 603. Pressure chamber; 604. Air pump; 7. Positioning slide rail; 8. Moving cart; 9. Telescopic rod; 10. Compression wedge; 11. Pressure-bearing wedge; 12. Pull rope; 13. Guide groove; 14. Assembly base; 15. Connecting wedge; 16. Adjusting wedge; 17. Adjusting nut; 18. Cantilever. Detailed Implementation

[0032] 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.

[0033] Example 1, please refer to Figures 1-3 A stabilizing device for the renovation of a coastal historical district includes a connecting cylinder 3 and a positioning slide rail 7. The connecting cylinder 3 is installed on a supporting structure, which is a column 1. A support plate 2 is fixedly welded to the top of the column 1. The column 1 is connected to the connecting cylinder 3 through the support plate 2. The outer wall of the connecting cylinder 3 is provided with a flange, which is connected to the support plate 2 by fastening bolts. A lifting column 4 is movably sleeved inside the connecting cylinder 3. A support is fixedly connected to the top of the lifting column 4. The lifting column 4 rests on the beam of the arcade. A vertical notch is provided on one side of the connecting cylinder 3. A lifting wedge 5 is slidably connected to the top of the support plate 2. The lifting wedge 5 is inserted into the bottom of the lifting column 4 through the notch. In order to make the lifting column 4 bear force evenly, the bottom of the lifting column 4 is provided with an inclined surface that fits with the lifting wedge 5. The lifting wedge 5 has a self-locking ability when inserted into the bottom of the lifting column 4. Combined with the friction coefficient of the steel structure, the included angle of the lifting wedge 5 is 8-14 degrees. A pressure wedge 11 is connected to the end of the lifting wedge 5.

[0034] The positioning slide rail 7 is slidably connected to the moving carriage 8. The positioning slide rail 7 can be installed on other support members or share a support structure with the column 1. The moving carriage 8 is equipped with a telescopic rod 9 that can extend and retract. The end of the telescopic rod 9 is connected to a pressing wedge 10. The pressing wedge 10 and the pressure wedge 11 are opposite to each other. When the moving carriage 8 moves along the positioning slide rail 7, it can press the pressure wedge 11. The moving carriage 8 is equipped with an adjustment member 6. The adjustment member 6 can adjust the force required for the telescopic rod 9 to retract and make it extend and reset.

[0035] Threaded sleeves are provided between the pressure wedge 11 and the lifting wedge 5, as well as between the compression wedge 10 and the telescopic rod 9. Rotating the threaded sleeves can adjust the position of the pressure wedge 11 or the compression wedge 10. During installation, first push the lifting wedge 5 to raise the lifting column 4 and press it against the beam of the arcade. By tapping and pushing the lifting wedge 5, due to the self-locking ability of the lifting wedge 5, the lifting wedge 5 remains pressed against the beam. Then adjust the position of the pressure wedge 11 so that the distance between each pressure wedge 11 and the lifting wedge 5 is the same. Then move the moving cart 8 to the position corresponding to each pressure wedge 11 in sequence. Both ends of the moving cart 8 are connected to pull ropes 12, which are connected to winches, electric hoists, or manual hoists (not shown). Pulling the moving cart 8 causes the telescopic rod 9 to press the pressure wedge 11, causing each lifting column 4 to be raised slightly in sequence. The maximum force during each lift is kept within a specific range. If the load suddenly increases abnormally during a single lift, it indicates that the support at a nearby location has been unloaded, the support has failed, and the load has been distributed to other locations in the surrounding area. Lifting needs to be stopped. Limiting the maximum lifting force can prevent the situation from deteriorating further. When the squeezing wedge 10 drives the pressure wedge 11, the distance of a single movement is no more than 5mm, and the corresponding lifting column 4 is lifted by no more than 1.25mm. The single lifting amount is small. After the moving car 8 moves once, the position of the squeezing wedge 10 is adjusted so that it is closer to the pressure wedge. The adjustment distance is no more than 5mm.

[0036] Adjustment component 6 includes a hydraulic cylinder 601 installed inside the mobile vehicle 8. The hydraulic cylinder 601 is connected to a pressure chamber 603, which is located at the top of the mobile vehicle 8. A plunger is installed inside the pressure chamber 603. Below the plunger is a liquid chamber connected to the hydraulic cylinder 601, and above the plunger is an air chamber. A pressure sensor is installed in the air chamber to monitor the lifting force for each lift. An air pump 604 and an air valve 602 are used to adjust the air pressure in the pressure chamber 603. The volume of the pressure chamber 603 is several times that of the telescopic rod 9. When the telescopic rod 9 retracts, the volume change caused by the liquid pressed into the pressure chamber 603 will not significantly increase the air pressure in the pressure chamber 603. When the squeezing wedge 10 squeezes the pressure wedge 11, if the force exceeds the threshold, the plunger moves under hydraulic pressure to release the pressure, and the telescopic rod 9 retracts, preventing further lifting of the lifting column 4. Both sides of the mobile vehicle 8 are equipped with clamps connected to the pull rope 12.

[0037] The support plate 2 is used to support the lifting wedge 5. In order to make the lifting wedge 5 slide more smoothly, the support plate 2 is provided with a guide groove 13, and the bottom of the lifting wedge 5 is provided with a limiting slider corresponding to the guide groove 13.

[0038] In Example 2, in Example 1, the connecting cylinder 3 is installed on the column 1. If the ground paving has historical value, it may lead to damage to the ground paving. Therefore, please refer to... Figures 4-8The column 1 is replaced by a cantilever 18. The cantilever 18 has a horizontal support arm. The support arm and the upright are provided with diagonal support. The upright can be connected to the ground anchor by a rope. The bottom of the upright is provided with a foundation. The positioning slide rail 7 and the connecting cylinder 3 are both installed on the support arm. The support plate 2 is connected to the support arm through the mounting seat 14. The mounting seat 14 is connected to the support arm by bolts. Since the cantilever 18 is located outside the arcade passage, it needs to go around the column when supporting the beam. Therefore, the support arm needs to be set at an angle. The bottom of the positioning slide rail 7 is connected to the support arm through the connecting block. The positioning slide rail 7 and the connecting block are rotatably connected to adapt to the angle of the support arm. The support plate 2 has multiple sets of mounting holes. The angle of the connecting cylinder 3 can be adjusted during installation so that the lifting wedge 5 is perpendicular to the positioning slide rail 7.

[0039] The bottom of the lifting wedge 5 is provided with a connecting wedge 15. The connecting cylinder 3 is provided with a groove corresponding to the bottom of the lifting wedge 5 to accommodate the sliding of the connecting wedge 15. Adjusting wedges 16 are provided on both sides of the groove corresponding to the end position of the connecting wedge 15. The adjusting wedges 16 are inserted to lock the connecting wedge 15, preventing the lifting wedge 5 from retracting and improving safety. When support is not needed, it can be pulled out and the adjusting wedge 16 on the other side can be inserted to push the lifting wedge 5 out. The connecting wedge 15 and the adjusting wedge 16 are long enough to accommodate different height differences at different positions. In the first embodiment, the adjusting wedge 16 is arranged horizontally and located on the side wall of the connecting cylinder 3. In the second embodiment, the adjusting wedge 16 is arranged vertically. The bottom of the connecting cylinder 3 is provided with a cover plate and an adjusting nut 17 is provided on the cover plate. Rotating the adjusting nut 17 drives the two adjusting wedges 16 to move.

[0040] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A stabilizing device for the renovation and construction of a coastal historical district, comprising a connecting cylinder (3) and a positioning slide rail (7), wherein the connecting cylinder (3) is installed on a supporting structure, characterized in that, The connecting cylinder (3) is movably sleeved with a lifting column (4). The side wall of the connecting cylinder (3) is provided with a support plate (2). One side of the connecting cylinder (3) is provided with a vertical notch. The support plate (2) is slidably connected with a lifting wedge (5). The lifting wedge (5) is inserted into the bottom of the lifting column (4) through the notch. After the lifting wedge (5) is inserted into the lifting column (4), it has a self-locking ability. The end of the lifting wedge (5) is connected to a pressure wedge (11). The positioning slide rail (7) is slidably connected to a moving vehicle (8). Both ends of the moving vehicle (8) are connected to a pull rope (12). The pull rope (12) is connected to a drive structure. The moving vehicle (8) is provided with a telescopic rod (9) that can extend and retract. The end of the telescopic rod (9) is connected to a pressing wedge (10). The pressing wedge (10) and the pressure wedge (11) are opposite to each other and can press against each other. The moving vehicle (8) is provided with an adjustment component (6). The adjustment component (6) can adjust the force required for the telescopic rod (9) to retract and make it extend and reset.

2. The stabilizing device for the renovation and construction of a coastal historical district according to claim 1, characterized in that, The pressure wedge (11) is provided with a threaded sleeve between the lifting wedge (5), the squeezing wedge (10), and the telescopic rod (9). Rotating the threaded sleeve can adjust the position of the pressure wedge (11) or the squeezing wedge (10).

3. The stabilizing device for the renovation and construction of a coastal historical district according to claim 2, characterized in that, When the extrusion wedge (10) drives the pressure wedge (11), the distance of a single movement of the pressure wedge (11) is no more than 5mm. After completing one round of lifting, the position of the extrusion wedge (10) is adjusted, and the adjustment distance is no more than 5mm.

4. The stabilizing device for the renovation and construction of a coastal historical district according to claim 3, characterized in that, The support structure is a cantilever (18), the upright can be connected to the ground anchor by a pull rope, the pallet (2) is connected to the support arm by a mounting base (14), the bottom of the positioning slide rail (7) is connected to the support arm by a connecting block, the positioning slide rail (7) is rotatably connected to the connecting block, and the relative angle between the pallet (2) and the connecting cylinder (3) can be adjusted.

5. The stabilizing device for the renovation and construction of a coastal historical district according to claim 3, characterized in that, The adjusting component (6) includes a hydraulic cylinder (601) installed in the moving vehicle (8). The hydraulic cylinder (601) is connected to a pressure chamber (603). A plunger is installed in the pressure chamber (603). Below the plunger is a liquid chamber connected to the hydraulic cylinder (601). Above the plunger is an air chamber. The air chamber is connected to an air pump (604) and is equipped with an air valve (602).

6. The stabilizing device for the renovation and construction of a coastal historical district according to claim 5, characterized in that, The air chamber is equipped with a pressure sensor to monitor the lifting force during each lift.

7. A stabilizing device for the renovation and construction of a coastal historical district according to claim 4, characterized in that, The pallet (2) is provided with a guide groove (13), and the bottom of the lifting wedge (5) is provided with a limiting slider corresponding to the guide groove (13).

8. The stabilizing device for the renovation and construction of a coastal historical district according to claim 7, characterized in that, The bottom of the lifting wedge (5) is provided with a connecting wedge (15), and the connecting cylinder (3) is provided with a sliding groove corresponding to the bottom of the lifting wedge (5). The sliding groove is provided with adjusting wedges (16) on both sides of the end position of the connecting wedge (15). When one adjusting wedge (16) is inserted, it can lock the connecting wedge (15), and when the other is inserted, it can push the lifting wedge (5) out.

9. A stabilizing device for the renovation and construction of a coastal historical district according to claim 8, characterized in that, The adjusting wedge (16) is connected to a screw rod, and the screw rod is connected to an adjusting nut (17), which is located outside the connecting cylinder (3).

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