Layered type corbel assembly calibration device

Abstract

The utility model discloses a layered formula corbel arch assembly calibration device belongs to ancient building woodwork repair technical field, aims at solving the problem of existing device clamping fragile part, calibration data is not accurate, filling adaptation is poor, and the problem of low recovery accuracy. The device includes corbel arch structure and the adjusting structure of installation between multilayer arch, and the adjusting structure is composed of fixed plate, movable plate, calibration spare and filling assembly, fixed plate and movable plate constitute U type arch bridge structure and click arch body, and cooperate with the adjusting clamping force of threaded rod and nut, and the inside soft pad protection part, the scale of calibration spare abuts and records the relative position data outside the bowl, and filling assembly passes through gasket, trapezoidal plate and wedge and adapts clearance. The device can realize the component protection when corbel arch splits, calibration data accurate reservation and the close adaptation when recovery, ensures that the corbel arch resets in situ according to the original appearance after maintenance, and guarantees its mechanical properties and historical features integrity.

Description

Technical Field

[0001] This invention relates to the field of ancient building wooden structure repair technology, specifically to a layered bracket assembly and calibration device. Background Technology

[0002] Dou-gong is the core load-bearing component in the ancient wooden structure system. It is composed of multiple layers of dou (11) and gong (12). Its structural integrity directly affects the overall mechanical performance and historical appearance of the ancient building. In the maintenance of ancient buildings, damaged dou-gong need to be disassembled and repaired. As a key auxiliary tool, the dou-gong assembly and calibration device must achieve two core goals at the same time: "safe disassembly" and "precise restoration" - it must avoid damage to the components due to positioning deviation or uneven force during disassembly, and it must ensure that the dou and gong components can be reset in their original positions according to the original assembly relationship after repair.

[0003] Existing bracket set assembly and calibration devices are relatively rudimentary, typically consisting of only ordinary metal clamps, handheld measuring tools (such as rulers), and single-sized shims. They have significant drawbacks: First, the clamps lack a structure adapted to the curved surface of the arch, relying solely on rigid clamps for direct clamping, which easily scratches the arch surface. Furthermore, the lack of a controllable and adjustable clamping force design often results in loosening or over-tightening, leading to component deformation. Second, calibration relies on manual handheld tool measurements, lacking an integrated data recording structure, making data prone to omissions and large errors. It cannot accurately retain the relative position information of the brackets and arches, making it difficult to match the original assembly relationship during restoration. Third, the use of shims of only a single thickness for filling cannot accommodate gaps of different sizes between the brackets and arches, resulting in poor component fit after filling. Ultimately, this leads to low accuracy in bracket set restoration, making it difficult to guarantee load-bearing stability and authenticity. Utility Model Content

[0004] To address the problems of existing devices such as clamping vulnerable parts, inaccurate calibration data, poor filling compatibility, and low restoration accuracy, this invention provides a layered bracket assembly and calibration device, aiming to achieve the following objectives:

[0005] 1. Provides a U-shaped clamping structure with controllable clamping force to protect the surface of the arch and ensure stable clamping;

[0006] 2. An integrated calibration structure for precise recording enables the positioning and data retention of the relative positions of the brackets and arches;

[0007] 3. Design a multi-component adaptable filling structure to meet different gap filling requirements;

[0008] 4. Ultimately, ensure the accuracy of the entire process of disassembling, calibrating, filling, and restoring the bracket set, ensuring that the bracket set is returned to its original position after maintenance, and maintaining its mechanical properties and historical appearance.

[0009] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a layered bracket assembly and calibration device, including a bracket structure and an adjustment structure; the bracket structure is the bracket body of the ancient building to be maintained, which is composed of several stacked brackets and arches, and the adjustment structure is installed between the multiple arches to realize the disassembly calibration and restoration assistance of the brackets and arches.

[0010] The composition and connection relationship of the adjustment structure

[0011] Clamping assembly: The fixed plate and the movable plate together form a U-shaped arch bridge structure, which adapts to the curved shape of the arch and can be tightly clamped onto the arch; the fixed plate is close to one side of the arch, and a threaded rod is fixedly connected to it in the direction close to the arch, with the threaded rod passing horizontally through the movable plate; the movable plate has a through hole with a diameter larger than the threaded rod, allowing the threaded rod to pass freely, and the side of the movable plate away from the fixed plate has a nut that engages with the threaded rod. By rotating the nut, the distance between the fixed plate and the movable plate can be adjusted, so as to achieve controllable adjustment of the clamping force; soft pads are attached to the side of the fixed plate and the movable plate close to the arch to avoid scratching the surface of the arch during clamping.

[0012] Calibration components: The calibration components are a pair of symmetrically distributed structures, which are fixedly connected to the fixed plate and the movable plate respectively. Each calibration component includes a scale and a support rod. The support rod is vertically fixed to the fixed plate / movable plate, and the scale is sleeved inside the support rod, which can be finely adjusted along the support rod. One end of the scale abuts against the outer surface of the bucket. By reading the value of the scale, the relative position data of the bucket and the arch can be accurately recorded, providing a basis for restoration.

[0013] Filling components: The filling components are placed on the upper surfaces of the fixed plate and the movable plate to fill the gap between the bracket and the arch, ensuring a close fit between the layered structures. They include several shims of different thicknesses, trapezoidal plates, and wedges. The shims are laid on the surface of the fixed plate / movable plate, and can be single or multiple shims stacked according to the gap thickness. The trapezoidal plates are placed above the shims to fit the inclined surface of the bottom of the bracket. There is a pair of wedges, located on both sides above the trapezoidal plates, for further fine-tuning of the gap to ensure a tight fit between the bracket and the arch. The filling components can be placed in the middle above the fixed plate and the movable plate, or placed on both at the same height to fit bracket and arch structures of different sizes.

[0014] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages compared with the prior art:

[0015] A. Safe and stable clamping, protecting the integrity of components. The fixed plate and movable plate of the U-shaped arch bridge structure are adapted to the arch surface, and the soft pad can prevent scratches on the arch. The adjustment design of the threaded rod and nut can accurately control the clamping force, which can prevent the component from shifting due to loose clamping, and also avoid the component from deforming due to excessive tightness, thus solving the problem of clamping vulnerable parts in existing devices.

[0016] B. Precise Calibration Data, Preserving In-Situ Reference: The integrated calibration component directly contacts the bucket via a scale, allowing real-time reading and recording of the relative position data between the bucket and the arch. This eliminates the need for manual handheld measurement, reducing data errors and omissions. The support rod ensures the scale's stable position, further enhancing calibration accuracy and providing accurate data support for in-situ repositioning during restoration. C. Strong Filling Adaptability, Ensuring Fitting Precision: The filling component employs a combination design of "shims + trapezoidal plates + wedges." The number of shims can be selected according to different gap thicknesses between the bucket and the arch. The trapezoidal plates adapt to inclined surfaces, and the wedges allow for fine-tuning. This solves the problem of existing single shims being unable to adapt to various gaps, ensuring a tight fit between components and improving restoration accuracy.

[0017] D. The entire process is precise and controllable, achieving in-situ repositioning. Through the synergistic effect of clamping, calibration, and filling, this device can protect the components when the bracket is disassembled, record the calibration data, and assemble them precisely during restoration. This ensures that the bracket after maintenance can be strictly repositioned in situ according to the original structural relationship, thus guaranteeing its mechanical load-bearing performance and the integrity of its historical appearance.

[0018] Other advantages, objectives and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be taught from the practice of this invention. Attached Figure Description

[0019] Figure 1 This is an assembly diagram of a layered bracket assembly and calibration device according to the present invention;

[0020] Figure 2 This is an exploded view of the bracket structure of a layered bracket assembly and calibration device according to this utility model;

[0021] Figure 3 This is a schematic diagram of the assembly of the adjustment structure of the layered bracket assembly and calibration device of this utility model;

[0022] Figure 4 This is an exploded view of the adjustment structure of a layered bracket assembly and calibration device according to this utility model.

[0023] As shown in the figure:

[0024] 1. Dou-gong structure; 11. Dou; 12. Gong; 2. Adjustment structure; 21. Fixed plate; 22. Movable plate; 23. Calibration component; 24. Filling assembly; 25. Threaded rod; 26. Through hole; 27. Nut; 28. Soft pad; 231. Scale; 232. Support rod; 241. Washer; 242. Trapezoidal plate; 243. Wedge block. Detailed Implementation

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

[0026] It should be noted that the terms "vertical," "horizontal," "up," "down," "left," "right," and similar expressions used in this article are for illustrative purposes only and do not represent the only possible implementation.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein in the description of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention; the term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0028] like Figure 1-4 As shown, in this device, the bracket structure 1 is the original bracket of the ancient building to be maintained. No additional preparation is required. Only the number and size of the overlapping of the bracket 11 and the arch 12 need to be confirmed before maintenance to ensure that the adjustment structure 2 is compatible.

[0029] Fixed plate 21 and movable plate 22: Made of 304 stainless steel, processed into a U-shaped arch bridge structure according to the curvature of arch 12, with a thickness of 5mm and a length adapted to the width of arch 12 (usually 15-20cm); soft pad 28 is made of nitrile rubber, with a thickness of 2mm, and is attached to the inner side of fixed plate 21 and movable plate 22 (the side closest to arch 12) with strong adhesive.

[0030] Threaded rod 25 and nut 27: Threaded rod 25 is an M8 stainless steel threaded rod with a length of 20cm. One end is fixed to the middle of the fixing plate 21 by welding. Nut 27 is a stainless steel hexagonal nut that is compatible with the M8 threaded rod and has an anti-slip treatment on the surface.

[0031] Calibration component 23: The scale 231 is made of aluminum alloy, with a range of 0-10cm and an accuracy of 1mm. The surface is engraved with clear graduations. The support rod 232 is a stainless steel round tube with an inner diameter slightly larger than the outer diameter of the scale 231 (gap 0.5mm) and a length of 8cm. It is fixed to the middle of the outer side of the fixed plate 21 and the movable plate 22 by welding.

[0032] Filling components 24: Gaskets 241 are made of stainless steel, with thicknesses of 0.5mm, 1mm, and 2mm, and each size is 5cm×5cm; Trapezoidal plates 242 are made of hardwood, with a top bottom of 3cm, a bottom bottom of 5cm, and a height of 2cm, and are adapted to the tilt angle of the bottom of bucket 11; Wedges 243 are made of hardwood, with a slope angle of 15° and an adjustable thickness of 1-3cm.

[0033] Installation and usage procedures for this device

[0034] Calibration and fixation before disassembly

[0035] Install adjustment structure 2: According to the stacking height of the bracket structure 1, install one set of adjustment structure 2 between every two layers of arch 12; press the inner side of the fixed plate 21 (with soft pad 28) tightly against one side of the arch 12, and pass the threaded rod 25 through the through hole 26 of the movable plate 22 so that the inner side of the movable plate 22 (with soft pad 28) is pressed tightly against the other side of the arch 12 to form a U-shaped engagement.

[0036] Adjust the clamping force: Rotate the nut 27 on the outside of the movable plate 22 and slowly adjust the distance between the fixed plate 21 and the movable plate 22 until the clamping is stable (the arch 12 should not wobble and should not be displaced by hand). Avoid over-tightening to prevent deformation of the arch.

[0037] Record calibration data: Adjust the scale 231 inside the support rod 232 so that one end of the scale 231 abuts against the outer surface of the bucket 11. Read and record the values ​​of the scale 231 on the fixed plate 21 side and the movable plate 22 side (e.g., 3.2cm on the fixed plate side and 3.1cm on the movable plate side). This data is the original relative position data of the bucket 11 and the arch 12, and should be kept for future reference.

[0038] Disassembly and repair of bracket sets

[0039] Separating Bucket 11 and Arch 12: Based on the fixation of Adjustment Structure 2, slowly separate Bucket 11 and Arch 12. If it is necessary to separate multiple layers, separate them in order from the top layer to the bottom layer. After separating each layer, check the clamping state of Adjustment Structure 2 to avoid component displacement.

[0040] Component inspection: Repair damage such as insect infestation and cracking on the disassembled bucket 11 and arch 12. During the repair process, avoid changing the original dimensions of the components (such as the height of the bucket and the curvature of the arch) to ensure subsequent restoration and adaptation.

[0041] Reassembly and Precision Calibration

[0042] Preliminary assembly: Reassemble the repaired bucket 11 and arch 12 according to the original stacking order, and install the original adjustment structure 2 between each layer of arch 12 (ensure that the positions of the fixed plate 21 and the movable plate 22 are consistent with those before disassembly).

[0043] Filling the gap: Observe the gap between the bucket 11 and the arch 12, select a shim 241 of appropriate thickness (e.g., if the gap is 1.5mm, select 1mm + 0.5mm shims stacked together), and lay it on the upper surface of the fixed plate 21 and the movable plate 22; place the trapezoidal plate 242 on top of the shim 241, so that it fits against the inclined surface of the bottom of the bucket 11; finally, place wedges 243 on both sides of the trapezoidal plate 242, and gently tap the wedges 243 until the bucket 11 and the arch 12 fit tightly (without loose gaps).

[0044] Reset calibration: Read the value of the scale 231 in the calibration piece 23 again to ensure that it is consistent with the data recorded before disassembly (error ≤ 0.2mm); if the value is deviated, correct it by adjusting the fine-tuning nut 27 (adjusting the clamping distance) or the wedge block 243 (adjusting the filling thickness) until the value matches the original data, and complete the in-situ reset of the bucket 11 and the arch 12.

[0045] Remove adjustment structure 2: After all the stacked structures have been calibrated and reset, rotate nut 27 counterclockwise to loosen the fixed plate 21 and movable plate 22, and remove all adjustment structures 2 in sequence to complete the maintenance and restoration of the bracket set.

[0046] This device requires adjustments based on different operational needs during use, as shown below:

[0047] Scenario 1: Minor damage maintenance (partial repair of bracket / arch components, without the need for complete disassembly of the bracket / arch layered structure)

[0048] Scene characteristics

[0049] For the repair of local components of ancient building brackets (such as cracks in a single layer of bracket body or wear on the edge of the arch body), it is only necessary to separate the target bracket 11 or arch 12 from the adjacent 1-2 layers of components. It is not necessary to dismantle the entire bracket layer structure. The core requirement is "local fixation + precise calibration" to avoid the displacement of undamaged components during the repair process.

[0050] The operational status of each structure of this device

[0051] Clamping structure (fixed plate 21, movable plate 22, threaded rod 25, nut 27, soft pad 28): A set of adjustment structures 2 are symmetrically installed on both sides of the arch 12 of the target inspection layer. The U-shaped arch bridge structure formed by the fixed plate 21 and the movable plate 22 is clamped in the middle of the arch 12 (avoiding the damaged area). The soft pad 28 is completely in contact with the curved surface of the arch 12. Rotate the nut 27 to adjust the spacing of the threaded rod 25 until the clamping force reaches "no shaking of the arch and no displacement when pushed by hand" (torque controlled at 5-8 N·m) to avoid damage to the arch due to excessive tightness.

[0052] Calibration components (23: scale 231, support rod 232): vertically fix the support rod 232 to the outside of the fixed plate 21 / movable plate 22, adjust the scale 231 so that one end abuts against the outer reference surface of the target bucket 11 (such as the upper edge of the bucket body), read and record the scale value (accurate to 0.1mm), and retain the original relative position data of the bucket and the arch of this layer.

[0053] Filling components (24: gasket 241, trapezoidal plate 242, wedge block 243): Not enabled for the time being, as only a partial split has occurred and the gap between the dou and the arch has not changed significantly, so no additional filling is required.

[0054] Details of integration with existing technologies / devices

[0055] Integrating existing technologies: ordinary handheld measuring tape, wooden temporary blocks

[0056] First, use an existing handheld measuring tape to preliminarily measure the overall dimensions of the target bucket 11 and arch 12 (such as bucket height and arch length) to determine the installation position of the adjustment structure 2 of this device (it is necessary to avoid the reference point measured by the measuring tape to avoid mutual interference).

[0057] At both ends of the arch 12 where the adjustment structure 2 is not installed, use existing wooden temporary pads (with the same thickness as the arch) to support it and prevent the arch from tilting due to unilateral force.

[0058] After the maintenance is completed, the overall dimensions of the bracket set are first checked with a handheld tape measure, and then the original data is compared with the scale 231 of this device to ensure that the overall dimensions are without deviation after partial resetting, thus realizing the linkage of "preliminary verification of existing tools + precise calibration of this device".

[0059] Scenario 2: Moderate disassembly and repair (requires disassembling 3-5 layers of the bracket structure and replacing damaged bracket / arch components)

[0060] Scene characteristics

[0061] For the replacement of middle or lower layer components of the bracket set (such as 3 consecutive layers of arches infested with insects or damaged bracket tenons), it is necessary to disassemble the target layer and 3-5 layers above it of the bracket set structure. The core requirement is "multi-layer fixing + data recording + new component adaptation" to ensure that the new component is accurately matched with the original structure and avoid misalignment between layers.

[0062] The operational status of each structure of this device

[0063] Clamping structure: According to the principle of "one set per layer", adjustment structure 2 is installed on the arch 12 of each layer to be disassembled (from the upper layer to the lower layer, layers 1-5); the engagement position of the fixed plate 21 and the movable plate 22 is uniformly aligned with the tenon and mortise joint of the arch 12 (to ensure that the fixing point is a weak area of ​​the structural load-bearing, and to avoid stress concentration during disassembly); the clamping force is adjusted by the threaded rod 25 and the nut 27, with the clamping force of the upper layer being slightly smaller (3-5 N·m) and the clamping force of the lower layer being slightly larger (8-10 N·m), because the lower layer needs to bear the weight of the disassembled parts of the upper layer.

[0064] Calibration components: Perform "dual benchmark calibration" on the scale 231 of each layer adjustment structure 2 - one end abuts against the outside of the bucket 11 and the other end abuts against the tenon and mortise boss of the arch 12, and record two sets of data: "bucket-arch" and "arch-tenon and mortise"; the support rod 232 is covered with an anti-slip rubber sleeve to prevent the scale 231 from shifting due to vibration during disassembly and to ensure the accuracy of data retention.

[0065] Filling component: This is used when replacing new parts after disassembly. First, measure the gap between the new bucket 11 and the original arch 12 (e.g., a gap of 2.3mm). Select 1mm+1mm+0.3mm shims 241 and stack them on the upper surface of the fixed plate 21 / movable plate 22. Fit the trapezoidal plate 242 to the bottom inclined surface of the new bucket 11 (the angle between the inclined side of the trapezoidal plate and the inclined surface of the bucket body is consistent). Then, use wedges 243 to insert into the gap between the trapezoidal plate 242 and the bucket body from both sides. Tap the wedges 243 until the gap is less than 0.2mm to achieve a tight fit between the new component and the original structure.

[0066] Details of integration with existing technologies / devices

[0067] Integrating existing technologies: temporary support frame, laser level, mortise and tenon repair fixture

[0068] Before disassembly, use an existing temporary support frame (adjustable metal type) to fix the uppermost component of the bracket. The top of the support frame is in contact with the lower end face of the movable plate 22 of this device. Adjust the height of the support frame to keep the arch 12 held by this device horizontal (linking the horizontal positioning of the U-shaped structure of this device to avoid the arch from tilting due to the support frame being too high).

[0069] Project a horizontal baseline using an existing laser level and align it with the 0 mark on the scale 231 of this device to ensure that each scale 231 is at the same horizontal height, thus avoiding data errors caused by the tilt of the device installation (the deviation between the laser line and the scale mark is ≤0.1mm to be considered acceptable).

[0070] When repairing the mortise and tenon joints of the new bucket 11, the bucket body is fixed with the existing mortise and tenon repair clamp. After the repair is completed, the shims and wedges of the filling component 24 of this device are adjusted to make the mortise and tenon joints of the new bucket precisely connect with the mortise and tenon joints of the original arch, realizing the linkage of "fixing and repairing with existing clamps + filling and fitting with this device".

[0071] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be determined by the claims.

Claims

1. A layered bracket assembly and calibration device, comprising a bracket structure (1), wherein the bracket structure (1) comprises a plurality of stacked brackets (11) and arches (12), characterized in that: An adjustment structure (2) is installed between the multiple arches (12), the adjustment structure (2) including a fixed plate (21), a movable plate (22), a calibration piece (23) and a filling assembly (24); The fixing plate (21) is close to one side of the arch (12). The fixing plate (21) is fixedly connected to the threaded rod (25) that passes through the movable plate (22) in the direction close to the arch (12). The fixing plate (21) and the movable plate (22) together form a U-shaped arch bridge structure and are engaged on the arch (12). The calibration components (23) are a pair of symmetrically distributed components, which are fixedly connected to the fixed plate (21) and the movable plate (22) respectively. The components include a scale (231) placed vertically above the fixed plate (21) and the movable plate (22), with one end of the scale (231) abutting against the outer surface of the bucket (11). The filling component (24) is placed on the upper surface of the fixed plate (21) and the movable plate (22), and includes several gaskets (241), a trapezoidal plate (242) located above the gaskets (241), and wedges (243) corresponding to the trapezoidal plate (242) and located on both sides above the trapezoidal plate (242).

2. The layered bracket assembly and calibration device according to claim 1, characterized in that: The movable plate (22) is provided with a through hole (26) with a diameter larger than that of the threaded rod (25) and horizontally penetrating itself. The movable plate (22) is provided with a nut (27) on the side away from the fixed plate (21) that meshes with the threaded rod (25).

3. The layered bracket assembly and calibration device according to claim 1, characterized in that: Both the fixed plate (21) and the movable plate (22) are provided with pads (28) on the side near the arch (12).

4. The layered bracket assembly and calibration device according to claim 1, characterized in that: The scale (231) is fitted with a support rod (232), which is fixedly connected to the movable plate (22) and the fixed plate (21).

5. The layered bracket assembly and calibration device according to claim 1, characterized in that: The filling component (24) is placed in the middle above the fixed plate (21) and the movable plate (22) or placed on the fixed plate (21) and the movable plate (22) at the same height.

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