Inventory-compatible adjustable hanger system and method of adjustment for a panelized wall

Abstract

The application provides a stock compatible adjustable hanging piece system for fabricated wallboards and an adjusting method. By adding a limiting component on site, the existing stock long circular hole hanging weight system obtains precise adjusting capability, realizes reversible and precise readjustment of the wallboard after installation, and maintains safety and operation convenience during the adjusting process. A pair of limiting components are installed on the outer side area of the long circular hole at both ends of the hanging weight through on-site drilling and threaded connection. An eccentric gasket is arranged on the hanging weight and located between the pair of limiting components. The outer circumferential surface of the eccentric gasket is in contact with the limiting part of the limiting component in the circumferential direction. A rotation prevention ring is arranged in the eccentric inner hole and gap fitted with the eccentric inner hole. A rotation prevention protrusion is embedded in the rotation prevention hole. A light rod section is arranged in the bolt mounting hole and the long circular hole. The rotation prevention ring is sleeved on the light rod section, and the rotation prevention ring and the light rod section are fixed in the circumferential direction. A locking nut is threadedly connected with the threaded section and presses the eccentric gasket and the rotation prevention ring.

Description

Technical Field

[0001] This invention relates to the field of building decoration and renovation technology, specifically to a stock-compatible adjustable hanging system and adjustment method for prefabricated wall panels, used for the installation of prefabricated wall panels. Background Technology

[0002] With the rapid development of industrialized construction and prefabricated decoration, dry-hanging wall panel systems (such as metal panels, wood veneer, stone panels, ceramic panels, and integrated insulation and decoration panels) are widely used in public buildings, commercial spaces, and residential interior decoration. Currently, mainstream dry-hanging systems typically employ a "wall connector + bracket" structure: the wall connector is fixed to the building's base layer or keel system, and the bracket is fixed to the back of the wall panel. The wall panel is installed by attaching the bracket to the wall connector.

[0003] To mitigate installation errors during construction, existing wall brackets commonly employ elongated holes at the connection points, allowing for a certain range of positional adjustment along the length of these holes. However, this traditional adjustment method has the following inherent drawbacks: First, the adjustment accuracy is low and it depends on the worker's experience. Traditional elongated hole adjustment is a coarse one-dimensional linear sliding method. The adjustment relies entirely on the worker's feel. It is achieved by loosening the bolt with a wrench, pushing the wall panel, and then tightening it again. It is difficult to achieve sub-millimeter level precise alignment, and the repeated loosening and tightening operations are inefficient.

[0004] Secondly, adjustments are limited to the installation process and cannot be fine-tuned after installation. Traditional methods require adjustments to be completed before the bolts are tightened. Once tightened, adjustments require reducing the preload, which is inconvenient and makes it difficult to compensate for flatness issues caused by structural settlement or deformation.

[0005] Third, upgrading existing systems is difficult. The building decoration industry has entered a phase of upgrading existing systems, and hundreds of millions of standard oblong hole mounting systems already installed need quality improvement or renovation. Although there are solutions using eccentric nuts, eccentric washers, and other adjusting elements in existing technologies, these solutions all require specific limiting structures or irregular holes to be pre-set on the mounting brackets, making them incompatible with existing mounting systems and resulting in high renovation costs.

[0006] Therefore, how to provide a wall panel mounting system that is compatible with existing long oval hole mounting systems, applicable to new projects, allows for precise fine-tuning after installation, and is safe and easy to operate has become a technical problem that urgently needs to be solved in this field. Summary of the Invention

[0007] This invention aims to solve the aforementioned problems in the prior art and provides a stock-compatible adjustable mounting system and adjustment method for prefabricated wall panels. The core objective of this invention is to enable existing elongated hole mounting systems to achieve precise adjustment capabilities by adding adjustable limiting components on-site, realizing reversible and precise releveling after wall panel installation, while maintaining safety and ease of operation during the adjustment process.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a stock-compatible adjustable mounting system for prefabricated wall panels, comprising wall connectors, locking bolts, locking nuts, and mounting brackets; the wall connectors are fixed to the building base or keel system and have bolt mounting holes thereon; the mounting brackets are fixed to the back of the wall panel and have elongated holes thereon, the length direction of which extends perpendicular to the wall surface; the locking bolts are provided with a bolt tail, a threaded section, a smooth section, and a bolt head in sequence along the axial direction; the system also includes limiting components, anti-rotation rings, and eccentric washers; a pair of limiting components are installed on the outer regions of the mounting brackets at both ends of the elongated holes by drilling holes on site and threading them together, the limiting components having limiting portions; the eccentric washers are disposed on the mounting brackets and located between the pair of limiting components, the outer circumferential surface of the eccentric washers being circumferentially connected to the limiting components. The limiting part of the positioning component maintains contact, and the eccentric washer is provided with an eccentric inner hole; the anti-rotation ring is set in the eccentric inner hole, and the anti-rotation ring and the eccentric inner hole are clearance-fitted; the eccentric washer is provided with an anti-rotation hole, and the anti-rotation ring is provided with an anti-rotation protrusion, which is embedded in the anti-rotation hole; the smooth rod section passes through the bolt mounting hole and the oblong hole; the anti-rotation ring is sleeved on the smooth rod section, and the anti-rotation ring and the smooth rod section are fixed in the circumferential direction; the locking nut is threadedly connected to the threaded section and presses the eccentric washer and the anti-rotation ring; wherein, when the locking nut is in the pre-tightened state, by rotating the locking bolt, the anti-rotation ring and the eccentric washer are driven to rotate synchronously, and the outer circumferential surface of the eccentric washer contacts the limiting part and generates circumferential relative movement, thereby driving the hanging bracket and the wall panel fixed thereto to move in a direction perpendicular to the wall surface.

[0009] The limiting component of the present invention includes a limiting screw, which is fixed in the mounting hole drilled on the hanger by screwing. The screw head of the limiting screw constitutes the limiting part and extends to a position that maintains contact with the outer peripheral surface of the eccentric washer in the circumferential direction.

[0010] The limiting component of the present invention includes a threaded sleeve and a limiting pin. The threaded sleeve is fixed in the mounting hole drilled on the field by being screwed on. The limiting pin is installed in the threaded sleeve by being threaded. The pin head of the limiting pin constitutes the limiting part and extends to a position that maintains contact with the outer peripheral surface of the eccentric washer in the circumferential direction.

[0011] The limiting screw described in this invention is an eccentric screw, with the screw head being eccentrically positioned.

[0012] The limiting pin described in this invention is an eccentric limiting pin, with the pin head being eccentrically positioned.

[0013] The locking bolt of the present invention has a limiting surface on the smooth section, and the inner hole of the anti-rotation ring also has a limiting surface. The limiting surface of the smooth section and the limiting surface on the anti-rotation ring make contact and cooperate to achieve circumferential fixation.

[0014] The anti-rotation ring of the present invention has a split structure, consisting of a first half and a second half; the inner holes of the two halves are respectively provided with the inner hole plane of the first half and the inner hole plane of the second half, which constitute the limiting surface of the inner hole of the anti-rotation ring; the outer wall of the second half is provided with the anti-rotation protrusion; the two halves hug the smooth rod section from the side.

[0015] The eccentric washer of the present invention is provided with a position mark indicating the direction of its maximum eccentricity.

[0016] The present invention includes a nut washer between the locking nut and the eccentric washer.

[0017] The adjustment method for a stock-compatible adjustable mounting system for prefabricated wall panels includes the following steps: Step S1: Fix the wall connectors to the building base or keel system, and fix the brackets to the back of the wall panel; Step S2: Based on the actual measured wall panel installation deviation, determine the location where the limiting components need to be installed; Step S3: Determine the drilling position using the pre-installation positioning method: First, pre-install the locking bolt and eccentric washer into place. Take two limiting components and invert them so that their limiting parts contact the outer circumferential surface of the eccentric washer. Adjust them so that the center of the two limiting parts and the center of the inner hole of the eccentric washer are located on the center line of the elongated hole, and the eccentricity direction of the eccentric washer is basically perpendicular to the long side of the elongated hole. Based on the adjusted position, determine the distance between the center of the mounting hole of the limiting component and the end of the elongated hole, as well as the distance between the centers of the two mounting holes. Drill the hole based on this distance. Step S4: Drill holes on the outside of both ends of the elongated hole on the hanger to obtain mounting holes; Step S5: Install the limiting component into the mounting hole so that the limiting part is in contact with the outer peripheral surface of the subsequently installed eccentric washer in the circumferential direction; Step S6: Pass the locking bolt through the bolt mounting hole of the wall connector and the elongated hole of the bracket from below; Step S7: Place the anti-rotation ring onto the smooth section of the locking bolt, so that the anti-rotation ring and the locking bolt form a circumferential anti-rotation fit; Step S8: Place the eccentric washer onto the anti-rotation ring, and embed the anti-rotation protrusion into the anti-rotation hole of the eccentric washer to form a circumferential anti-rotation fit; Step S9: Pre-tighten the lock nut onto the threaded section of the lock bolt; Step S10: Rotate the locking bolt with a tool to drive the anti-rotation ring and eccentric washer to rotate synchronously. The outer circumferential surface of the eccentric washer contacts the limiting part of the limiting component, driving the hanging bracket and wall panel to produce linear displacement in a direction perpendicular to the wall until the predetermined position is reached. Step S11: Finally tighten the lock nut.

[0018] Compared with the prior art, the present invention has the following beneficial effects: 1. Existing compatibility: The wall connectors have standard round holes, which are fully compatible with existing wall connectors without any modification. Existing hanging bracket systems can be easily adjusted on-site by simply drilling and adding the connectors. The modification cost is extremely low and the market application prospects are broad.

[0019] 2. Precision Fine-tuning Capability: This invention can be used for precise positioning during installation and for non-destructive re-leveling after installation. During installation, sub-millimeter precision adjustment of the mounting plate position can be achieved by rotating the locking bolts. The locking bolts remain pre-tightened throughout the adjustment process, ensuring the wall panel remains under control. After the wall panel is installed, or even after a period of use, simply loosening the locking nuts allows for compensatory re-leveling to address flatness issues caused by structural settlement or deformation, solving the industry pain point of traditional methods' difficulty in post-installation adjustments. Theoretically, the single-adjustment accuracy can reach within ±0.2mm.

[0020] 3. High safety during adjustment: The locking bolts are always kept in a pre-tightened state during the adjustment process, avoiding the uncontrolled displacement of the wall panel that may occur when the pre-tightening force needs to be reduced in the traditional method.

[0021] 4. Long-term anti-loosening reliability: The limiting fit of the anti-rotation ring and the anti-rotation protrusion provide geometric anti-rotation protection, and the long-term vibration resistance is better than the structure that relies solely on friction to prevent loosening.

[0022] 5. Multiple limit component forms, highly adaptable: It provides two main forms: limit screws and "threaded sleeve + limit pin", as well as multiple adjustment and adaptation structures such as multi-diameter head and eccentric head, which can flexibly cope with different working conditions and deviations.

[0023] 6. Simple operation and improved construction efficiency: The pre-installed positioning method significantly improves drilling accuracy and reduces adjustment workload. On-site construction personnel only need an ordinary wrench to complete the adjustment, enabling independent operation by a single person and significantly improving construction efficiency.

[0024] 7. Compact structure and easy to manufacture: The main components can be mass-produced using mature processes such as stamping, cold heading, and machining, with controllable costs, making it suitable for large-scale promotion.

[0025] 8. High ease of assembly and maintenance: As an independent component, the anti-rotation ring does not require replacement of the entire eccentric washer after long-term wear; only the anti-rotation ring needs to be replaced (during maintenance, the locking bolt remains in its original position, ensuring the safety of the wall panel and preventing the risk of detachment), significantly reducing the maintenance cost and safety risks of retrofitting existing mounting systems. Furthermore, the split-type anti-rotation ring greatly facilitates on-site assembly and subsequent maintenance. Because the inner hole of the integral anti-rotation ring has a limiting surface, it cannot be inserted through the threaded locking bolt end (the threads will scratch the inner hole limiting surface, or the threaded section may be larger than the radial dimension of the inner hole limiting surface, preventing insertion). The split-type anti-rotation ring of this invention can directly engage with the smooth rod section from the side, effectively solving this assembly problem and improving construction efficiency. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of an embodiment of the present invention; Figure 2 This is an enlarged structural diagram of part A in Embodiment 1 of the present invention; Figure 3 This is an enlarged exploded isometric view of part A in Embodiment 1 of the present invention; Figure 4 This is a schematic diagram of the limiting screw in Embodiment 2 of the present invention; Figure 5 This is a schematic diagram of the split structure of the threaded sleeve and the limiting pin in Embodiment 3 of the present invention; Figure 6 This is a schematic diagram of the limiting screw structure with an eccentric head in Embodiment 4 of the present invention; Figure 7 This is a schematic diagram of the separate structure of the limiting pin with an eccentric head and the threaded sleeve in Embodiment 5 of the present invention.

[0027] In the diagram: 1-Wall connector, 1-1-Bolt mounting hole, 2-Hanging bracket, 2-1-Oblong hole, 2-2-Mounting hole (drilled on-site), 3-1-Limit screw, 3-1-1-Screw head, 3-1-1-1-Screw limit end face, 3-1-1-2-Screw force application hole, 3-1-2-Screw shank, 3-1-2-1-Screw thread, 3-1-2-2-Screw chip removal notch, 3-2-Threaded sleeve, 3-2-1-Sleeve head, 3-2-1-1-Sleeve force application groove, 3-2-2-Sleeve shank, 3-2-2-1-Sleeve thread, 3-2-2-2-Sleeve chip removal notch, 3-2-3-Sleeve internal thread, 3-3-Limit pin, 3-3-1-Pin head, 3- 3-1-1-Pin limiting end face, 3-3-1-2-Pin force application hole, 3-3-2-Pin rod part, 3-3-2-1-Pin external thread, 4-Locking bolt, 4-1-Bolt tail, 4-1-1-Bolt force application part, 4-2-Threaded section, 4-3-Smooth rod section, 4-3-1-Limiting surface, 4-4-Bolt head, 5-Eccentric washer, 5-1-Eccentric inner hole, 5-2-Anti-rotation hole, 5-3-Position mark, 6-Anti-rotation ring, 6-1-First half, 6-1-1-First half inner hole plane, 6-2-Second half, 6-2-1-Second half inner hole plane, 6-2-2-Anti-rotation protrusion, 7-Nut washer, 8-Locking nut, 9-Wall panel, 10-Building base / keel system. Detailed Implementation

[0028] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be noted that the following embodiments are only used to explain the present invention and are not intended to limit the scope of protection of the present invention.

[0029] like Figures 1 to 3 As shown, this embodiment provides the specific structure of the overall solution.

[0030] The wall connector 1 is made of high-strength steel (such as Q235B) with a thickness of 3mm. This wall connector 1 can be directly fixed to the building substrate such as a concrete wall using expansion bolts or chemical anchors. It can also be fixed to the vertical or horizontal keel in the keel system, as shown in the diagram as the building substrate / keel system 10. The wall connector 1 has a circular bolt mounting hole 1-1 with a diameter of Φ9mm, for the smooth rod section 4-3 of the locking bolt 4 to pass through, leaving a 1mm gap.

[0031] The mounting bracket 2 is made of high-strength steel (such as Q235B) with a thickness of 4mm. It is fixed to the back of the wall panel 9 by means of back bolts, slotted anchors, or self-tapping screws. The mounting bracket 2 has an elongated hole 2-1, which is set perpendicular to the wall surface, with a length of 30mm and a width of 10mm. It is used to accommodate the smooth rod section 4-3 (Φ8mm) of the locking bolt 4, with a 1mm gap on each side. The mounting bracket 2 does not have an integrally formed fixing limit structure at both ends of the elongated hole 2-1. Instead, a pair of installation holes 2-2 are drilled on the outside of both ends of the elongated hole 2-1. The diameter of the installation holes 2-2 can be Φ4.0mm (for limit screws) or Φ6.8mm (for threaded sleeves) depending on the type of limit component 3. The limit component 3 is installed in the installation holes 2-2 by threaded connection. In this way, a pair of limit components 3 are installed on the outside of both ends of the elongated hole 2-1 by threaded connection.

[0032] The locking bolt 4 is made of high-strength steel (such as 40Cr). The locking bolt 4 is provided with bolt tail 4-1, threaded section 4-2 (M8×1.25), smooth section 4-3 (Φ8mm) and bolt head 4-4 (hexagonal head, 10mm distance between opposite sides) in sequence along the axial direction.

[0033] The bolt tail 4-1 is an external hexagonal head, specification S6 (6mm distance between opposite sides), and has a bolt force application part 4-1-1 on it. Two symmetrical, axially extending limiting surfaces 4-3-1 are milled on the smooth rod section 4-3, with a distance of 7.6mm between the two limiting surfaces and an arc diameter of 8mm.

[0034] An eccentric washer 5 is mounted on the hanger 2 and positioned between a pair of limiting components 3. The outer circumferential surface of the eccentric washer 5 maintains contact with the limiting components 3 in the circumferential direction. The eccentric washer 5 is made of alloy steel (such as 40Cr) with an outer diameter of Φ37mm. An eccentric inner hole 5-1 with a diameter of Φ20.2mm is provided in the eccentric washer 5, which has a clearance fit with the outer diameter of the anti-rotation ring 6 (Φ20mm). The clearance fit facilitates the insertion of the eccentric washer 5 into the anti-rotation ring 6, which has a thickness of 4mm. A first eccentric distance e1 = 3.0mm is provided between the geometric center of the eccentric inner hole 5-1 and the geometric center of the outer circumference of the eccentric washer 5, with an adjustable stroke of ±3mm. The eccentric washer 5 has an anti-rotation hole 5-2 that matches the shape of the anti-rotation protrusion 6-2-2. The anti-rotation hole 5-2 is a rectangle with dimensions of 6.2×6.2mm and has a clearance fit with the anti-rotation protrusion 6-2-2. The eccentric washer 5 has two mutually perpendicular position marks 5-3. The first mark indicates the direction of maximum eccentricity, and the second mark passes through the center of the eccentric inner hole 5-1 and is perpendicular to the first mark, used to assist in centering. During adjustment, the operator observes the relative position of the marks on the eccentric washer 5 with a reference object (such as the edge of the oblong hole) and uses a straightedge for measurement to make the adjustment.

[0035] An anti-rotation ring 6 is disposed in the eccentric inner hole 5-1, and the anti-rotation ring 6 is clearance-fitted with the eccentric inner hole 5-1. The anti-rotation ring 6 is made of alloy steel (such as 40Cr), and the inner hole of the anti-rotation ring 6 has a limiting surface that matches the shape of the limiting surface 4-3-1. The anti-rotation ring 6 is sleeved on the smooth rod section 4-3, and circumferential fixation is achieved through the cooperation of the two limiting surfaces 4-3-1. In this embodiment, the anti-rotation ring 6 is a split structure, consisting of a first half 6-1 and a second half 6-2. The inner holes of the two halves are respectively provided with a first half inner hole plane 6-1-1 and a second half inner hole plane 6-2-1 that contact and engage with the two limiting surfaces 4-3-1 of the smooth rod section 4-3. The first half inner hole plane 6-1-1 and the second half inner hole plane 6-2-1 constitute the limiting surfaces of the inner hole of the anti-rotation ring 6. The distance between the two planes is 7.7mm, the arc diameter is 8.1mm, and a total clearance of 0.1mm (0.05mm on each side) is maintained with the smooth rod section 4-3. The outer wall of the second half 6-2 is provided with a rectangular anti-rotation protrusion 6-2-2, with a size of 6.0×6.0mm. The two halves hug the smooth rod section 4-3 from the side, and are circumferentially fixed through the limiting surface engagement. The anti-rotation ring 6 has an outer diameter of Φ20mm, an inner hole diameter of Φ8.1mm, a radial wall thickness of approximately 6mm, and a thickness of 4mm.

[0036] In this embodiment, the anti-rotation ring 6 adopts a split structure, which has the following significant advantages: First, the split structure solves the assembly problem that the integral anti-rotation ring with anti-rotation protrusion 6-2-2 and inner hole limiting surface cannot be inserted from the end of the threaded section 4-2 of the locking bolt 4. By designing the anti-rotation ring 6 as two separable halves, it can be directly engaged with the smooth rod section 4-3 from the side after the locking bolt 4 passes through the wall connector 1 and the bracket 2, without needing to be inserted from the end, greatly reducing the assembly difficulty and improving construction efficiency. Second, after the two halves are engaged, they are axially pressed by the eccentric washer 5 and the locking nut 8, forming a reliable circumferential fixation with the limiting surface 4-3-1 on the smooth rod section 4-3, ensuring the stability and accuracy of torque transmission. In addition, the split structure is easy to process and replace. If one half is damaged, only the corresponding half needs to be replaced, reducing maintenance costs.

[0037] To evenly transmit the pressure of the locking nut 8 to the eccentric washer 5 and the anti-rotation ring 6, this embodiment includes a nut washer 7 between the locking nut 8 and the eccentric washer 5. The nut washer 7 is made of high-strength steel, with an outer diameter of Φ30mm, an inner diameter of Φ8.5mm, and a thickness of 1.5mm. It is fitted onto the smooth section 4-3 of the locking bolt 4 and positioned above the eccentric washer 5. The locking nut 8 is a standard M8 hexagonal nut with a flat distance of 13mm. The locking nut 8 is installed on the threaded section 4-2. During installation, after the locking nut 8 is tightened, the pressure is evenly transmitted to the eccentric washer 5 and the anti-rotation ring 6 through the nut washer 7, and then further transmitted to the hanger 2 through the eccentric washer 5 and the anti-rotation ring 6, ensuring reliable clamping of all components.

[0038] like Figure 4 As shown, this embodiment provides a specific structure of a limiting component.

[0039] The screw head 3-1-1 of the limiting screw 3-1 has a screw limiting end face 3-1-1-1 with a diameter of Φ10mm (larger than the thread section), and the screw head 3-1-1 integrates an internal hexagonal hole as a screw force application hole 3-1-1-2.

[0040] The limiting screw 3-1 is tightened and fixed into the Φ4.0mm mounting hole 2-2 drilled on-site on the bracket 2 via screw threads 3-1-2-1. Its front end can be either a tapered tip or a tapered threaded structure to accommodate brackets of different thicknesses. The screw head 3-1-1 forms the limiting part, and the limiting end face 3-1-1-1 extends to maintain contact with the outer circumferential surface of the eccentric washer 5. The screw head diameter is available in three specifications: Φ8mm, Φ10mm, and Φ12mm.

[0041] The screw chip removal notch 3-1-2-2 is a preferred structure for the limiting screw 3-1. Three axial chip removal notches 3-1-2-2 are opened in the entire screw shank 3-1-2. The notch depth is 0.5mm and the width is 1.0mm. They are evenly distributed around the circumference to accommodate the chips generated during screwing.

[0042] like Figure 5 As shown, this embodiment provides another specific structure for a limiting component.

[0043] The outer wall of the threaded sleeve 3-2 is provided with a sleeve thread 3-2-2-1 (M8), and its front end can be either a tapered tip structure or a tapered guide thread structure to accommodate hangers of different thicknesses. The end face of the sleeve head 3-2-1 of the threaded sleeve 3-2 has a slot as a sleeve force application groove 3-2-1-1, facilitating tightening and fixing it into the Φ6.8mm mounting hole 2-2 on the hanger 2 with a screwdriver. The inner wall of the sleeve is provided with an internal sleeve thread 3-2-3 (M5×0.8). The sleeve rod 3-2-2 is 5mm long, slightly longer than the hanger thickness of 4mm. The sleeve rod 3-2-2 has three axial sleeve chip removal notches 3-2-2-2, running through the entire length of the sleeve, to accommodate chips generated during screwing.

[0044] The pin head 3-3-1 of the limiting pin 3-3 is available in three diameters: Φ8mm, Φ10mm, and Φ12mm. The end face of the pin head 3-3-1 has an internal hexagonal hole 3-3-1-2 as a pin force-applying hole to adjust the screw-in depth. The pin shank 3-3-2 has an external thread 3-3-2-1 (M5×0.8) that mates with the internal thread 3-2-3 of the sleeve. During installation, first screw the threaded sleeve 3-2 into the mounting hole 2-2, then select the appropriate diameter limiting pin 3-3 based on the measured deviation and screw it in. The pin limiting end face 3-3-1-1 of the pin head 3-3-1 forms the limiting part, extending to maintain contact with the outer circumferential surface of the eccentric washer 5.

[0045] like Figure 6 As shown, this embodiment provides another preferred structure for the limiting screw 3-1, further optimizing the limiting screw 3-1: the limiting screw 3-1 is an eccentric screw, with the screw head 3-1-1 of the limiting screw 3-1 eccentrically positioned, and its geometric center having a second eccentricity e2 = 1.0 mm between it and the center of the screw thread 3-1-2-1. During installation, first screw the limiting screw 3-1 into the mounting hole 2-2 of the bracket 2, and then, according to the actual position of the locking bolt 4, rotate the limiting screw 3-1 to adjust the circumferential phase of the head, so that the screw limiting end face 3-1-1-1 maintains effective contact with the eccentric washer 5. This eccentric head structure can adapt to different bolt position deviations by rotational fine-tuning without replacing the limiting screw.

[0046] like Figure 7 As shown, this embodiment provides another preferred structure for the limiting pin 3-3, further optimizing the limiting pin 3-3: the limiting pin 3-31 adopts an eccentric limiting pin, and the pin head 3-3-1 of the limiting pin 3-31 is eccentrically set, with a second eccentric distance e2=1.0mm between its geometric center and the center of the pin rod 3-3-2. During installation, first screw the threaded sleeve 3-2 into the mounting hole 2-2 of the bracket 2, then screw the limiting pin 3-3 into the threaded sleeve 3-2. By rotating the limiting pin 3-3, the circumferential phase of the head is adjusted so that the pin limiting end face 3-3-1-1 maintains effective contact with the eccentric washer 5.

[0047] Geometric Relationship Verification: The following key dimensions are used in various embodiments of the present invention and have been verified to meet the working requirements. Center distance between the two mounting holes 2-2 = 30mm (length of the oblong hole 2-1) + 2 × 8.4mm (distance from the center of the hole to the end) = 46.8mm. When the head diameter of the limiting pin 3-3 is 10mm, the inner distance of the head = 46.8 - 10 = 36.8mm. Outer diameter of the eccentric washer 5 is 37mm, the first eccentricity is 3mm, and the center movement range is ±3mm. Calculations show that in any rotational position, the outer circle of the eccentric washer 5 maintains contact with at least one limiting pin 3-3, ensuring effective drive. The contact area between the eccentric washer 5 and the hanging bracket 2 is approximately 440mm², and the preload of the M8 bolt is approximately 23-45MPa, far below the material yield strength, ensuring reliable connection.

[0048] An adjustment method for an adjustable mounting system for prefabricated wall panels according to the present invention includes the following steps: Step S1: Fix the wall connector 1 to the building base / keel system 10 (when using a keel system, it can be fixed to the vertical keel or the horizontal keel), fix the bracket 2 to the back of the wall panel 9, the bracket 2 is provided with an elongated hole 2-1, and the bracket 2 is not provided with an integrally formed fixing limit structure at both ends of the elongated hole 2-1. Step S2: Based on the actual measured wall panel installation deviation, determine the location where the limiting component 3 needs to be installed; Step S3: Determine the drilling position using the pre-installation positioning method: First, pre-install the locking bolt 4 and the eccentric washer 5 into place. Take two limiting components 3 or their contour parts and invert them so that their limiting parts (such as the screw limiting end face 3-1-1-1 or the pin limiting end face 3-3-1-1) are in contact with the outer peripheral surface of the eccentric washer 5. Adjust them so that the center of the two limiting parts and the center of the eccentric inner hole 5-1 of the eccentric washer 5 are located on the center line of the elongated hole 2-1, and the eccentricity direction of the eccentric washer 5 is basically perpendicular to the long side of the elongated hole 2-1 (if further smooth assembly is required, a 0.1-0.2mm thin piece can be inserted between the limiting part and the eccentric washer 5 for auxiliary positioning). Determine the distance between the center of the mounting hole 2-2 and the end of the elongated hole 2-1 and the distance between the centers of the two mounting holes 2-2 according to the adjusted position. Drill the hole according to this distance. Step S4: Drill holes on the outside of both ends of the oblong hole 2-1 on the hanging bracket 2 to obtain the mounting hole 2-2; Step S5: Install the limiting component 3 (such as the limiting screw 3-1 or the threaded sleeve 3-2 and the limiting pin 3-3) into the mounting hole 2-2, so that the limiting part is in contact with the outer peripheral surface of the eccentric washer 5 to be installed later in the circumferential direction; Step S6: Pass the locking bolt 4 through the bolt mounting hole 1-1 of the wall connector 1 and the elongated hole 2-1 of the bracket 2 from below; Step S7: The first half 6-1 and the second half 6-2 of the anti-rotation ring 6 are fitted from the side onto the smooth rod section 4-3 of the locking bolt 4, so that the inner hole plane 6-1-1 of the first half and the inner hole plane 6-2-1 of the second half are engaged with the limiting surface 4-3-1 on the smooth rod section 4-3, thereby achieving circumferential fixation between the anti-rotation ring 6 and the locking bolt 4; Step S8: The eccentric washer 5 is fitted onto the anti-rotation ring 6, and the anti-rotation protrusion 6-2-2 of the anti-rotation ring 6 is embedded into the anti-rotation hole 5-2 of the eccentric washer 5 to form a circumferential anti-rotation fit. Step S9: Pre-tighten the locking nut 8 onto the threaded section 4-2 of the locking bolt 4, and initially press the eccentric washer 5 and the anti-rotation ring 6 through the nut washer 7, or initially press the eccentric washer 5. Step S10: Rotate the bolt force application part 4-1-1 on the bolt tail 4-1 of the locking bolt 4 with a tool, which drives the anti-rotation ring 6 and the eccentric washer 5 to rotate synchronously. The outer peripheral surface of the eccentric washer 5 contacts the limiting part of the limiting component 3, which drives the hanging bracket 2 and the wall plate 9 to produce linear displacement in a direction perpendicular to the wall until the predetermined position is reached. Step S11: Finally tighten the lock nut 8.

[0049] In step S3, drilling positioning is performed based on this distance, and one of the following methods can be used: using a positioning ruler with a pre-made scale for quick positioning drilling; using a measuring tool to directly mark the mark on the hanging weight before drilling; or making a drilling template based on the measurement data for positioning.

[0050] For hanging points located in the middle of the wall and obscured by surrounding wall panels 9, adjustments can be made in one of the following ways: reserve an openable decorative inspection hole during the design phase of wall panel 9; use a ball-end hex wrench or other force-applying tools to operate through the installation gap reserved on the side of wall panel 9; first, adaptably disassemble and reassemble the wall panels 9 around the adjustment point to expose the operating surface before making fine adjustments, and finally restore the surrounding wall panels 9.

[0051] The technical solution described in this invention can be widely applied to various dry-hanging wall panel systems, including but not limited to: metal curtain wall panels, stone curtain wall panels, ceramic panels, integrated insulation and decoration panels, wood veneer panels, GRC panels, etc. It is suitable for high-precision installation in new projects, and even more so for quality improvement and renovation of existing building curtain walls / decorative wall panels. The implementation of this invention can significantly improve the flatness of wall panel installation, reduce construction difficulty and cost, and has good industrial applicability and market promotion value.

[0052] It should be noted that the specific embodiments described in this specification are for illustrative purposes only and are not intended to limit the invention. Those skilled in the art can make various modifications, additions, or equivalent substitutions to the above embodiments, but all such changes should fall within the scope derived from the inventive concept. The scope of protection of this invention is determined by the claims; any equivalent changes or modifications made based on the spirit and essence of this invention should be covered within the scope of protection of this invention.

Claims

1. A stock-compatible adjustable mounting system for prefabricated wall panels, comprising wall connectors, locking bolts, locking nuts, and mounting brackets; the wall connectors are fixed to the building base or keel system and have bolt mounting holes thereon; the mounting brackets are fixed to the back of the wall panel and have elongated holes thereon, the length direction of which extends perpendicular to the wall surface; the locking bolts are provided axially with a bolt tail, a threaded section, a smooth section, and a bolt head in sequence; characterized in that: It also includes limiting components, anti-rotation rings, and eccentric washers; a pair of limiting components are installed on the outer regions of the two ends of the hanging bracket by drilling holes and threading, and the limiting components are provided with limiting parts; the eccentric washers are placed on the hanging brackets and located between the pair of limiting components, and the outer circumferential surface of the eccentric washers is in contact with the limiting parts of the limiting components in the circumferential direction, and the eccentric washers are provided with eccentric inner holes; the anti-rotation rings are placed in the eccentric inner holes, and the anti-rotation rings are clearance-fitted with the eccentric inner holes; the eccentric washers are provided with anti-rotation holes, and the anti-rotation rings are provided with anti-rotation protrusions, and the anti-rotation protrusions are embedded in the anti-rotation rings. Inside the hole; the smooth rod section passes through the bolt mounting hole and the oblong hole; the anti-rotation ring is sleeved on the smooth rod section, and the anti-rotation ring and the smooth rod section are fixed in the circumferential direction; the locking nut is threadedly connected to the threaded section and presses the eccentric washer and the anti-rotation ring; wherein, when the locking nut is in the pre-tightened state, by rotating the locking bolt, the anti-rotation ring and the eccentric washer are driven to rotate synchronously, the outer circumferential surface of the eccentric washer contacts the limiting part and generates circumferential relative movement, thereby driving the hanging bracket and the wall panel fixed thereto to displace in a direction perpendicular to the wall surface.

2. The existing stock compatible adjustable mounting system for prefabricated wall panels according to claim 1, characterized in that: The limiting component includes a limiting screw, which is fixed to the mounting hole drilled on-site on the hanger by screwing. The screw head of the limiting screw constitutes the limiting part and extends to a position that maintains contact with the outer peripheral surface of the eccentric washer in the circumferential direction.

3. The existing stock compatible adjustable mounting system for prefabricated wall panels according to claim 1, characterized in that: The limiting component includes a threaded sleeve and a limiting pin. The threaded sleeve is fixed in the mounting hole drilled on the field by being screwed on. The limiting pin is installed in the threaded sleeve by being threaded. The pin head of the limiting pin constitutes the limiting part and extends to a position that maintains contact with the outer peripheral surface of the eccentric washer in the circumferential direction.

4. The existing stock compatible adjustable mounting system for prefabricated wall panels according to claim 2, characterized in that: The limiting screw is an eccentric screw, and the screw head of the limiting screw is set eccentrically.

5. The existing stock compatible adjustable mounting system for prefabricated wall panels according to claim 3, characterized in that: The aforementioned limit pin is an eccentric limit pin, with the pin head being eccentrically positioned.

6. The existing stock compatible adjustable mounting system for prefabricated wall panels according to claim 1, characterized in that: The smooth section of the locking bolt is provided with a limiting surface, and the inner hole of the anti-rotation ring is also provided with a limiting surface. The limiting surface of the smooth section and the limiting surface on the anti-rotation ring make contact and cooperate to achieve circumferential fixation.

7. The existing stock compatible adjustable mounting system for prefabricated wall panels according to claim 6, characterized in that: The anti-rotation ring has a split structure, consisting of a first half and a second half; the inner holes of the two halves are respectively provided with the inner hole plane of the first half and the inner hole plane of the second half, which constitute the limiting surface of the inner hole of the anti-rotation ring; the outer wall of the second half is provided with the anti-rotation protrusion; the two halves hug the smooth rod section from the side.

8. The existing stock compatible adjustable mounting system for prefabricated wall panels according to claim 1, characterized in that: The eccentric washer is marked with a position mark indicating the direction of its maximum eccentricity.

9. The existing stock compatible adjustable mounting system for prefabricated wall panels according to claim 1, characterized in that: A nut washer is provided between the lock nut and the eccentric washer.

10. The adjustment method for a stock-compatible adjustable mounting system for prefabricated wall panels according to any one of claims 1 to 9, characterized in that: Includes the following steps: Step S1: Fix the wall connectors to the building base or keel system, and fix the brackets to the back of the wall panel; Step S2: Based on the actual measured wall panel installation deviation, determine the location where the limiting components need to be installed; Step S3: Determine the drilling position using the pre-installation positioning method: First, pre-install the locking bolt and eccentric washer into place. Take two limiting components and invert them so that their limiting parts contact the outer circumferential surface of the eccentric washer. Adjust them so that the center of the two limiting parts and the center of the inner hole of the eccentric washer are located on the center line of the elongated hole, and the eccentricity direction of the eccentric washer is basically perpendicular to the long side of the elongated hole. Based on the adjusted position, determine the distance between the center of the mounting hole of the limiting component and the end of the elongated hole, as well as the distance between the centers of the two mounting holes. Drill the hole based on this distance. Step S4: Drill holes on the outside of both ends of the elongated hole on the hanger to obtain mounting holes; Step S5: Install the limiting component into the mounting hole so that the limiting part is in contact with the outer peripheral surface of the subsequently installed eccentric washer in the circumferential direction; Step S6: Pass the locking bolt through the bolt mounting hole of the wall connector and the elongated hole of the bracket from below; Step S7: Place the anti-rotation ring onto the smooth section of the locking bolt, so that the anti-rotation ring and the locking bolt form a circumferential anti-rotation fit; Step S8: Place the eccentric washer onto the anti-rotation ring, and embed the anti-rotation protrusion into the anti-rotation hole of the eccentric washer to form a circumferential anti-rotation fit; Step S9: Pre-tighten the lock nut onto the threaded section of the lock bolt; Step S10: Rotate the locking bolt with a tool to drive the anti-rotation ring and eccentric washer to rotate synchronously. The outer circumferential surface of the eccentric washer contacts the limiting part of the limiting component, driving the hanging bracket and wall panel to produce linear displacement in a direction perpendicular to the wall until the predetermined position is reached. Step S11: Finally tighten the lock nut.

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