Building curtain wall flatness detection device

Abstract

The invention provides a building curtain wall flatness detection device, and relates to the technical field of curtain wall plane detection, the building curtain wall flatness detection device comprises a shell, and four corners of the shell are provided with connecting columns; the edges of four corners of the soft film are respectively fixed at one end, far away from the shell, of each connecting column and are unfolded in a tiled state; the plurality of resistance wires are arranged in the soft film in a criss-cross manner, the resistance value of the soft film is changed when the soft film is stretched and deformed, and the plurality of resistance wires are respectively provided with an independent current loop; the display assembly is arranged on the shell, the resistance wires are electrically connected with the display assembly, and the display assembly is used for partitioning the longitudinally and transversely arranged resistance wires and is used for displaying corresponding current or voltage change data based on resistance changes of the resistance wires. According to the invention, the flatness of the curved building curtain wall can be conveniently detected, and the detection efficiency and accuracy are significantly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of curtain wall plane detection, in particular to a device for detecting the flatness of a building curtain wall. Background Art

[0002] In modern construction, curtain walls, a crucial component of building facade decoration and protection, are becoming increasingly diverse in their structural forms, encompassing both conventional flat curtain walls and a growing number of special-shaped curved structures to meet both the artistic and functional demands of architectural forms. However, the installation accuracy of curtain walls is directly impacted by the aesthetics, safety, and longevity of a building. Therefore, surface flatness testing is often required after installation.

[0003] Traditional flat curtain walls have relatively mature flatness testing methods, typically using laser rangefinders, benchmarking, or laser leveling devices for efficient testing, offering excellent operability and precision control. However, when faced with free-form or curved curtain walls, traditional testing methods are difficult to apply directly because their surfaces lack a uniform reference plane, making it difficult to effectively assess overall curvature consistency and local deformation. Summary of the Invention

[0004] The purpose of the present invention is to provide a building curtain wall flatness detection device, which can more conveniently detect the flatness of curved building curtain walls and significantly improve the efficiency and accuracy of detection.

[0005] The present invention is achieved through the following technical solutions: A building curtain wall flatness detection device, comprising: A housing, wherein connecting columns are provided at four corners of the housing; A soft film, wherein the four corner edges of the soft film are respectively fixed to the end of each connecting column away from the shell, and is unfolded in a flat state; A plurality of resistance wires are provided, the resistance wires are crisscrossed and arranged inside the soft film, and the resistance value thereof changes when the soft film is stretched and deformed, and the plurality of resistance wires respectively have independent current loops; The display component is arranged on the shell, the resistance wire is electrically connected to the display component, and the display component divides the resistance wires arranged vertically and horizontally into sections to display corresponding current or voltage change data based on the resistance change of the resistance wires.

[0006] Furthermore, the connecting column is hingedly arranged at the four corners of the shell and can swing outward at a certain angle. A reset member is provided between each connecting column and the shell, and the reset member is used to drive the connecting column to rebound to its original position after it swings.

[0007] Furthermore, the connecting column swings outward at an angle of 1° to 10° along the hinge point of the shell.

[0008] Furthermore, the resistance wire is made of a conductive structure that can cause resistance changes with deformation, and the conductive structure includes one of the following or a combination thereof: Liquid metal channels, ion-conducting polymers, carbon nanotube conductive films, or elastic composite materials containing conductive particles; The conductive structure package is installed in the soft film or sandwiched between the multi-layer structures of the soft film, and the resistance changes as the soft film is stretched.

[0009] Furthermore, the resistance wires in the soft film further include resistance wires arranged diagonally along a diagonal line. The diagonally arranged resistance wires also have independent current loops and are electrically connected to the display assembly.

[0010] Furthermore, a wind cavity is provided on a side of the shell facing the soft film, and a fan assembly is provided in the wind cavity. The fan assembly is used to blow air toward the surface of the soft film so that the soft film is closely attached to the curved curtain wall to be detected.

[0011] Furthermore, the display component includes a voltage or current reading circuit, a signal processing module and a display screen. The signal processing module is used to convert the electrical signal of each resistance wire into a visual image or value and display it on the display screen.

[0012] Furthermore, the plurality of resistance wires are led out to the display assembly in the housing through flexible cables, and the flexible cables are detachably connected to the soft film.

[0013] Furthermore, one end of the connecting column away from the housing is configured as a spherical structure, and an end surface of the spherical structure is configured to be tangential to the soft film.

[0014] Furthermore, a connecting membrane is provided between the edges of the soft membrane and the shell, and the air cavity is located in the circumferential connecting membrane.

[0015] The technical solution of the present invention has at least the following advantages and beneficial effects: 1. The present invention achieves real-time response to deformation within the entire detection area by placing a soft film on the housing and crisscrossing multiple resistance wires with independent current loops within the film. Combined with the display assembly's zoned display capabilities, this method utilizes a soft film applied to the surface of a building's curtain wall. If there are localized distortions, steps, or surface differences, the corresponding areas of the film will be stretched, causing the resistance of the resistance wires in that area to change, and thus, the measured voltage or current to change. Because the strain caused by stretching is non-uniform, the electrical signal generated by the resistance wires also exhibits nonlinear characteristics, more clearly reflecting the smoothness of the curtain wall surface.

[0016] 2. This invention uses resistor wires to form independent current loops, and they are arranged in vertical and horizontal zones on the display module. This facilitates the separation and precise reading of deformation signals of the soft film in different directions, avoiding data recognition difficulties caused by circuit interference or signal congestion. By separately reading the resistance changes in each direction, it is possible to further determine in which direction the curtain wall surface has abnormal stretching, thereby inferring whether there are flatness defects such as warping, dents, or distortion at the corresponding location, thereby improving the efficiency and accuracy of test data analysis. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The present invention is intended to illustrate the overall structure of a soft membrane side of a building curtain wall flatness detection device; Figure 2 The present invention is intended to illustrate the overall structure of a display screen side of a building curtain wall flatness detection device; Figure 3 This is a schematic diagram showing the internal structure of the housing; Figure 4 This is a schematic diagram showing the structure of the soft membrane and the connecting column of the present invention; Figure 5 This invention is intended to show the structural schematic diagram of the longitudinal, transverse and oblique layout of the resistance wire on the soft film; Figure numerals: 1-shell, 11-air cavity, 12-handle, 13-accommodating groove, 2-connecting column, 21-reset member, 22-hinge shaft, 23-spherical structure, 3-soft film, 4-resistance wire, 5-display assembly, 51-display screen, 6-fan assembly, 61-hair dryer, 7-flexible cable, 8-connecting film. DETAILED DESCRIPTION

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0020] The following reference Figure 1-Figure 5As shown, and further described in conjunction with specific embodiments, this embodiment provides a building curtain wall flatness detection device, comprising a housing 1. The housing 1 can be molded from sheet metal or high-strength plastic, is lightweight and impact-resistant, and is convenient for on-site construction workers to hold and use. A pair of handles 12 are mounted on the housing 1, symmetrically arranged on opposite sides of the housing 1. These handles 12 are bolted or slot-mounted, facilitating stable grip and movement during testing, thereby enhancing the controllability and safety of the device. Four connecting columns 2 are provided at the four corners of the housing 1. Each connecting column 2 forms a fixed or rotatable connection with the housing 1, serving as a support point for the soft film 3.

[0021] Reference Figure 1 and Figure 4 As shown, the four corner edges of the soft film 3 are fixed to the end of each connecting column 2 away from the housing 1, and are laid out flat. The soft film 3 is preferably made of a composite material with excellent elasticity, such as thermoplastic polyurethane (TPU), silicone rubber composite film, or a flexible laminate with electrical insulation properties, to ensure its stability under repeated stretching and deformation. The four corner edges can be attached to the ends of the connecting columns 2 by gluing, riveting, clamping, or snapping. Dedicated slots can also be included to facilitate quick replacement. When unstressed, the soft film 3 is essentially in its naturally unfolded state. When attached to a building curtain wall, it stretches due to surface deformation, enabling detection.

[0022] Multiple resistance wires 4 are arranged in a crisscross pattern within the soft film 3. Preferably, the resistance wires 4 are pre-embedded between the film layers or fixed to the film structure through etching, electrospinning, electrospraying, sutures, or other methods, and are configured to exhibit a change in resistance when stretched. To ensure detection resolution and anti-interference capabilities, the multiple resistance wires 4 are connected to independent power sources to form independent current loops, independently of each other. These wires are connected to the display assembly 5 via corresponding signal paths, ensuring high discrimination and real-time responsiveness of the measurement results.

[0023] Display assembly 5 is mounted on housing 1, its outer shell connected to housing 1 via screws or interlocking connections, facilitating future maintenance and upgrades. Display assembly 5 includes a circuit for reading the electrical signals from each resistor wire 4 and transmitting these signals to an internal processing module. Display assembly 5 partitions the longitudinally and transversely arranged resistor wires 4 to prevent cross-signal interference and improve the accuracy of data processing in each direction. Display assembly 5 displays the corresponding current or voltage changes based on the resistance changes of the resistor wires 4. This data can be used to intuitively determine local deformation areas or overall flatness deviations of the curtain wall.

[0024] Reference Figure 1 and Figure 3As shown, the four connecting columns 2 are hingedly arranged at the four corners of the shell 1 through the hinge shaft 22. At the same time, four outward-diverging receiving grooves 13 are opened at the four corners of the shell 1. A part of the connecting column 2 is located in the receiving groove 13 to improve the stability of the connecting column 2. The four connecting columns 2 can swing outward at a certain angle around the hinge shaft 22 arranged at the corner of the shell 1.

[0025] A reset element 21 is provided between each connecting post 2 and the housing 1. In this embodiment, the reset element 21 is a torsion spring, mounted on the hinge shaft 22 or within the elastic groove between the connecting post 2 and the housing 1, to provide a stable return force. In other embodiments, the reset element 21 may be a rubber spring, a shape memory alloy sheet, or a corrugated sheet elastic member to achieve reset characteristics with varying strengths and response speeds. The reset element 21 is used to drive the connecting post 2 back to its original position after it swings. This original position is generally perpendicular to the housing 1, thereby ensuring the initial flatness of the soft film 3 in the unstressed state.

[0026] Furthermore, the angle at which the connecting column 2 swings outward relative to the housing 1 along the hinge point is 1° to 10°, and this angle range can be controlled by a limit block or an angle buffer mechanism to avoid excessive tensioning of the soft film 3 or causing detection errors. It should be noted that during the detection process, this small angle of swing allows the soft film 3 to more flexibly fit the curtain wall surface with a certain curvature or local irregularities. At the same time, since the stretching of the soft film 3 generated within this angle range is a linear change, this part of the background resistance change signal can be eliminated through a preset calibration experiment. In addition, an angle sensor can be installed on the hinge shaft 22 and connected to the display component 5 via a cable to achieve dynamic monitoring and correction compensation of the angle adjustment process of the soft film 3.

[0027] Specifically, the resistance wire 4 is made of a conductive structure that changes resistance with deformation. This conductive structure may include one or a combination of the following: a liquid metal channel (such as a gallium-indium alloy) encapsulated in a flexible pipe, a conductive gel or polymer film based on ion migration, an elastomeric composite film with a surface-distributed carbon nanotube or graphene conductive grid, and a rubber composite material embedded with conductive particles (such as Ag particles). This conductive structure is encapsulated and installed within the soft film 3 through methods such as hot pressing lamination, spin coating, and 3D printing microchannels, or sandwiched between multiple layers of the soft film 3. When the soft film 3 is stretched, it produces an effective and stable resistance change, adapting to the needs of non-uniform curved surface detection.

[0028] As an optional embodiment, refer to Figure 5The resistance wire 4 in the soft film 3 also includes resistance wires 4 arranged diagonally along the diagonal line. The number of resistance wires 4 can be flexibly adjusted according to the size of the curtain wall area to enhance the response sensitivity to oblique distortion or spiral deformation. Such resistance wires 4 also have independent current loops and are electrically connected to the display component 5 through plugs or welding to avoid data mixing and improve multi-dimensional signal analysis capabilities.

[0029] Reference Figure 3 As shown, the housing 1 has an air cavity 11 on the side facing the soft film 3. This cavity 11 is formed by injection molding or welding, and houses a fan assembly 6. This fan assembly 6 includes at least a pair of blowers 61, located symmetrically on either side of the housing 1 or within the cavity 11. Air is delivered into the cavity 11 via an air duct. In this embodiment, the fan assembly 6 is controlled by a power supply module and provides a stable outward airflow pressure during the soft film 3 attachment process, ensuring a tighter fit between the soft film 3 and the curtain wall surface, reducing sources of error such as wrinkling and film floating during inspection.

[0030] Furthermore, the display component 5 includes a voltage or current reading circuit, a signal processing module, and a display screen 51. The reading circuit corresponds to each resistor wire 4 and can read and collect its changing current or voltage signal in real time; the signal processing module includes an MCU control unit, an AD conversion module, and a signal filtering algorithm unit, which can synchronously process signals from different directions and different areas (this part is existing technology and will not be described in detail here). The converted values ​​or change trends are intuitively displayed on the display screen 51 in the form of images, tables, heat maps, etc., so that on-site personnel can quickly identify them. The display screen 51 can be a color LCD screen, a flexible OLED screen, or a portable electronic ink screen, etc., with good outdoor visibility and low power consumption characteristics.

[0031] As an optional embodiment, the display component 5 further supports an animated image display function, can dynamically fit the resistance value change trend through the image driver chip, and present animation effects such as wave graphs and deformation cloud graphs on the display screen 51, to assist users in trend judgment and comparative analysis of the test results, support data storage and USB export functions, and realize on-site data collection and archiving of later engineering quality.

[0032] Optionally, multiple resistance wires 4 are led out to the display component 5 in the shell 1 through a flexible cable 7. The cable can be a multi-core ultra-fine cable with bending resistance and insulation protection performance; a plug-in head is provided at the end of the cable, and is connected to the docking socket on the soft film 3 to achieve quick installation and removal, replacement of resistance wires 4 or soft film 3 components, thereby improving on-site maintenance efficiency.

[0033] Reference Figure 4As shown, the end of the connecting column 2 away from the shell 1 is set as a spherical structure 23. The spherical structure 23 can be realized by molding or connecting a ball head assembly. Its end face is set tangent to the soft film 3, and can automatically adjust the fitting angle during the swinging process to adapt to the different curvature changes of the curved curtain wall, thereby improving the fitting uniformity and local response consistency of the soft film 3 in different installation states.

[0034] As an optional embodiment, a connecting membrane 8 is provided around the edges of the soft film 3 and between the housing 1. This connecting membrane 8 is annular and made of the same material as the soft film 3 or a flexible material with good air permeability. An air cavity 11 is located within this annular connecting membrane 8. When the fan blows, the connecting membrane 8 creates a stable airflow environment that applies pressure to the soft film 3, effectively improving the adhesion of the soft film 3 and preventing external wind interference.

[0035] The device operates as follows: First, the device is moved to the curtain wall area to be inspected, and the soft film 3 on the housing 1 is aligned with the location to be inspected. By grasping the handle 12 on the housing 1, the operator applies appropriate pressure to initially adhere the soft film 3 to the curtain wall surface. Subsequently, the fan assembly 6 is activated, and the airflow from the air cavity 11 further presses the soft film 3 against the curtain wall, making it conform closely to the local contours of the curtain wall, improving inspection accuracy and eliminating air gap interference between the soft film 3 and the curtain wall.

[0036] During the lamination process, if the curtain wall surface exhibits unevenness, such as warping, dents, or twisted glass, the corresponding areas of the soft film will stretch or distort accordingly, causing the resistance of the internal resistor wires to change. Because each resistor wire is connected to an independent current loop and communicates with the display unit, these changes are converted into current or voltage change signals in real time. The display unit then processes these signals and visualizes them as images, numerical values, or heat maps.

[0037] Operators can quickly identify the location and degree of abnormal deformation of the curtain wall based on the changing trend of the electrical signal on the display screen, and make quantitative judgments on the flatness of the curved curtain wall and locate local problems, thereby improving the efficiency and accuracy of detection.

[0038] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A building curtain wall flatness detection device, characterized in that: include: A housing (1), wherein connecting columns (2) are provided at four corners of the housing (1); A soft film (3), wherein the four corner edges of the soft film (3) are respectively fixed to one end of each of the connecting pillars (2) away from the shell (1), and are unfolded in a flat state; A plurality of resistance wires (4) are provided, the resistance wires (4) are arranged in a crisscross pattern inside the soft film (3), and when the soft film (3) is stretched and deformed, the resistance value thereof changes, and the plurality of resistance wires (4) each have an independent current loop; A display component (5) is provided on the housing (1); the resistance wire (4) is electrically connected to the display component (5); the display component (5) partitions the resistance wires (4) arranged longitudinally and transversely, and is used to display corresponding current or voltage change data based on the resistance change of the resistance wire (4).

2. The building curtain wall flatness detection device according to claim 1, characterized in that: The connecting columns (2) are hingedly arranged at the four corners of the housing (1) and can swing outwards at a certain angle. A reset member (21) is provided between each connecting column (2) and the housing (1). The reset member (21) is used to drive the connecting column (2) to rebound to its original position after it swings.

3. The building curtain wall flatness detection device according to claim 2, characterized in that: The angle at which the connecting column (2) swings outward along the hinge point of the housing (1) is 1° to 10°.

4. The building curtain wall flatness detection device according to claim 1, characterized in that: The resistance wire (4) is made of a conductive structure that can cause resistance changes with deformation, and the conductive structure includes one of the following or a combination thereof: Liquid metal channels, ion-conducting polymers, carbon nanotube conductive films, or elastic composite materials containing conductive particles; The conductive structure package is installed in the soft film (3) or sandwiched between the multi-layer structure of the soft film (3), and generates resistance changes as the soft film (3) is stretched.

5. The building curtain wall flatness detection device according to claim 1, characterized in that: The resistance wire (4) in the soft film (3) further includes a resistance wire (4) arranged diagonally along a diagonal line. The diagonally arranged resistance wire (4) also has an independent current loop and is electrically connected to the display component (5).

6. The building curtain wall flatness detection device according to claim 1, characterized in that: The housing (1) is provided with an air cavity (11) on one side facing the soft film (3), and a fan assembly (6) is provided in the air cavity (11). The fan assembly (6) is used to blow air toward the surface of the soft film (3) so that the soft film (3) is closely attached to the curved curtain wall to be detected.

7. The building curtain wall flatness detection device according to claim 1, characterized in that: The display component (5) comprises a voltage or current reading circuit, a signal processing module and a display screen (51), wherein the signal processing module is used to convert the electrical signal of each resistance wire (4) into a visual image or numerical value and display it on the display screen (51).

8. The building curtain wall flatness detection device according to claim 7, characterized in that: The plurality of resistance wires (4) are all led out to the display assembly (5) in the housing (1) via a flexible cable (7), and the flexible cable (7) is detachably connected to the soft film (3).

9. The building curtain wall flatness detection device according to claim 1, characterized in that: One end of the connecting column (2) away from the housing (1) is configured as a spherical structure (23), and the end surface of the spherical structure (23) is tangentially disposed to the soft film (3).

10. The building curtain wall flatness detection device according to claim 6, characterized in that: A connecting membrane (8) is provided between the edges of the soft membrane (3) and the shell (1), and the air cavity (11) is located in the circumferential connecting membrane (8).

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