Adjustable guiding rule for installation of curved decorative plate

Abstract

The utility model discloses an adjustable guiding rule for installing a curved decorative plate, which comprises a chord length adjusting main beam, three slidable arc height adjusting columns, a radian adjusting component and a guiding rule batten, and the chord length adjusting main beam relatively slides in a horizontal main pipe through a horizontal sub-pipe and limits and adjusts the length of the chord length adjusting main beam; the height of the slidable arc height adjusting column is limited and adjusted through relative sliding of the vertical sub-pipe in the vertical main pipe, the slidable arc height adjusting column and the relative chord length adjusting main beam are detachably connected, the connecting position is adjustable, and guiding rule battens are fixed to the two ends of the chord length adjusting main beam. The centers of the top ends of the three slidable arc height adjusting columns are located in the same vertical plane, the radian adjusting assemblies are arranged at the top ends of the vertical sub-pipes, and the tops of the radian adjusting assemblies are clamped to the upper surface and the lower surface of the inner side edge of the guiding rule batten at the corresponding position. According to the utility model, the guiding rule comprising a plurality of adjusting structures is designed, so that the radian of the elastic guiding rule batten can be changed as required, and the installation precision of the single-curved arc-shaped aluminum batten can be checked.

Description

Technical Field

[0001] This utility model relates to a construction auxiliary tool, and in particular to an adjustable straightedge for installing curved decorative panels. Background Technology

[0002] As more and more interior design projects pursue unique visual effects, designers are also favoring curved shapes or curved ceilings to create a variety of architectural styles. For double-curved interior ceiling panels, after installation, it is usually necessary to verify the curvature of the installed ceiling panels based on the visual effect and installation results for fine-tuning.

[0003] Because hyperbolic ceiling panels present inconveniences in terms of both processing difficulty and verification methods, the designers have redesigned the interior ceiling panels to be formed by a series of single-curved aluminum strips spaced apart as the base material. This eliminates the need for processing and on-site installation of the hyperbolic curved panels, requiring only the processing and positioning of the single-curved aluminum strips. This places higher demands on the installation accuracy of the curved surfaces of the single-curved aluminum strips.

[0004] The curvature of each single-curved aluminum strip in a hyperbolic design is constantly changing. There is an urgent need for a matching adjustable straightedge that can verify the installation of single-curved aluminum strip decorative panels with multiple curvatures within the same hyperbolic surface. Utility Model Content

[0005] The purpose of this utility model is to provide an adjustable ruler for installing curved decorative panels, which solves the technical problem of verifying the degree of curvature during the construction and installation of single-curved aluminum strips with multiple arcs within the same hyperboloid.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An adjustable straightedge for curved decorative panels includes a chord length adjusting main beam, three sliding arc height adjusting columns, an arc adjustment assembly, and a straightedge strip.

[0008] The chord length adjusting main beam includes horizontal main tubes and horizontal sub-tubes that are sleeved opposite each other on the left and right. The adjusting end of the horizontal sub-tube is inserted into the adjusting end of the horizontal main tube. The length of the chord length adjusting main beam is adjusted by the relative sliding and limiting of the horizontal sub-tube within the horizontal main tube.

[0009] The three sliding height-adjustable columns have the same structure. Each column includes a vertical main tube and a vertical sub-tube that are fitted together vertically. The bottom end of the horizontal sub-tube is inserted into the top end of the horizontal main tube. The height of the sliding height-adjustable column is adjusted by the relative sliding of the vertical sub-tube within the vertical main tube.

[0010] Three sliding arc height adjusting columns are spaced apart along the length of the chord length adjusting main beam. The back side of each sliding arc height adjusting column is close to the outer side of the chord length adjusting main beam. The sliding arc height adjusting columns are detachably connected to the corresponding chord length adjusting main beam, and the connection position is adjustable. The three sliding arc height adjusting columns include a main pipe side column and a main pipe middle column set on one side of the horizontal main pipe, and a sub-pipe side column set on one side of the horizontal sub-pipe.

[0011] The fixed ends of the chord length adjusting main beam are respectively fixedly connected to extension rods. The guide plate is an elastic curved plate, and its two ends are respectively fixedly connected to the extension rods. The width of the horizontal projection of the guide plate is the same as the width of the guide plate. The top centers of the three sliding arc height adjusting columns are all located in the same vertical plane.

[0012] The curvature adjustment component is located at the top of the vertical sub-tube. The position of the curvature adjustment component relative to the vertical sub-tube is vertically adjustable. The bottom of the curvature adjustment component can swing left and right relative to the top of the vertical sub-tube. The top of the curvature adjustment component is clamped on the upper and lower surfaces of the inner side of the ruler plate at the corresponding position.

[0013] The central column of the main tube is located in the middle of the chord length. The height of the central column of the main tube is greater than that of the side columns of the main tube and the side columns of the daughter tube. The side columns of the main tube and the side columns of the daughter tube are symmetrical from left to right and have the same height. The diameter of the side column of the daughter tube is greater than that of the side column of the main tube.

[0014] A horizontal slot is provided on the side where the chord length adjusting main beam connects to the sliding arc height adjusting column, and a horizontal insert plate is provided at the bottom of the vertical main tube. The depth to which the horizontal insert plate is inserted into the horizontal slot is no more than 1 / 3 of the width of the chord length adjusting main beam.

[0015] The front wall of the horizontal main pipe has a horizontally continuous main pipe slot, and the front wall of the horizontal daughter pipe has a horizontally continuous daughter pipe slot. The main pipe slot and the daughter pipe slot are centered and correspond to each other.

[0016] The horizontal insert plate of the main tube side post can be inserted into the main tube slot or into the overlapping position of the main tube slot and the daughter tube slot, and can be adjusted by sliding left and right.

[0017] The horizontal insert plate of the main tube column can be inserted into the main tube slot or into the overlapping position of the main tube slot and the daughter tube slot, and can be adjusted by sliding left and right.

[0018] The horizontal insert plate of the sub-tube side column is inserted into the sub-tube slot and can be adjusted by sliding left and right.

[0019] Both the horizontal main pipe and the horizontal sub-pipe are square steel pipes. A row of horizontal sub-pipe limiting holes are provided along the horizontal sub-pipe, penetrating the top and bottom surfaces and spaced apart. The adjusting end of the horizontal main pipe is provided with a horizontal main pipe limiting hole that penetrates the top and bottom surfaces. The horizontal main pipe limiting hole is directly opposite one of the horizontal sub-pipe limiting holes and is limited by a vertical limiting bolt passing through the two holes.

[0020] Both the vertical main pipe and the vertical sub-pipe are square steel pipes. A row of vertical sub-pipe limiting holes is provided along the vertical sub-pipe, passing through the front and rear sides and spaced apart. The top of the vertical main pipe is provided with a vertical main pipe limiting hole that passes through the front and rear sides. The vertical main pipe limiting hole is directly opposite one of the vertical sub-pipe limiting holes and is limited by a horizontal limiting bolt passing through the two holes.

[0021] The top of the vertical sub-tube is equipped with a parallel chord length adjusting main beam and blind grooves in the left and right directions. The bottom of the blind groove is equipped with a groove bottom plate, and the groove bottom plate has clamp fixing holes with internal threads.

[0022] The curvature adjustment assembly includes a vertically adjustable bolt rod, a bolt rod core plate, a rotating shaft, a central column, and a guide rail clamping plate. The bottom of the vertically adjustable bolt rod is inserted into the clamp fixing hole and threaded. The bolt rod core plate is vertically fixed to the top surface of the vertically adjustable bolt rod. The bolt rod core plate has a horizontal core plate shaft hole. The bottom of the central column is provided with a clamping ear plate, which has a horizontal ear plate shaft hole. The core plate shaft hole and the ear plate shaft hole are aligned and rotated by sequentially inserting the rotating shaft. The guide rail clamping plate is perpendicular to the central column and is detachably connected to the top of the central column.

[0023] The ruler strip clamp is a round plate, and the spacing between the ruler strip clamps is the same as the thickness of the ruler strip at the corresponding position.

[0024] Compared with the prior art, this utility model has the following features and beneficial effects:

[0025] To address the problem of verifying the degree of curvature during the construction and installation of single-curved aluminum strips with multiple curvatures within the same hyperboloid, this utility model discloses a verification ruler for auxiliary installation. The ruler is designed with multiple adjustment structures to ensure that the elastic ruler strip can change its curvature as needed to verify the installation accuracy of the single-curved aluminum strip.

[0026] The three adjustment dimensions of this utility model are achieved through the chord length adjustment main beam, the sliding arc height adjustment column, and the arc adjustment component. The chord length corresponding to the arc of the straightedge plate is adjusted by the adjustable length of the chord length adjustment main beam, which is also the load-bearing component of the straightedge's overall structure. The arc height corresponding to the arc of the sliding straightedge plate is adjusted by the adjustable height of the sliding arc height adjustment column. The arc adjustment component can be finely adjusted in height relative to the top of the sliding arc height adjustment column, and at the same time, the arc adjustment component clamps and fixes the straightedge plate at the corresponding position.

[0027] This invention is applicable to the surface verification of single-curved aluminum strips with various degrees of curvature within hyperboloids. Attached Figure Description

[0028] The present invention will now be described in further detail with reference to the accompanying drawings.

[0029] Figure 1 This is a schematic diagram of the main structure of Embodiment 1 of this utility model.

[0030] Figure 2 This is a schematic diagram of the main structure of Embodiment 2 of this utility model.

[0031] Figure 3 yes Figure 1 Enlarged schematic diagram of the connection structure between the neutron tube side column and the curvature adjustment component.

[0032] Figure 4 This is an enlarged view of the connection structure between the sliding arc height adjustment column and the arc adjustment component.

[0033] Figure 5 This is another enlarged view of the connection structure between the sliding arc height adjustment column and the arc adjustment component.

[0034] Figure 6 This is a top view of the structure of Embodiment 1 of this utility model.

[0035] Figure 7 This is a top view of the structure of Embodiment 2 of this utility model.

[0036] Figure 8 yes Figure 7 Enlarged schematic diagram of the connection structure between the sliding arc height adjustment column and the chord length adjustment main beam, as well as the connection structure between the arc adjustment component and the straightedge plate.

[0037] Attached reference numerals: 1 - chord length adjustment main beam, 11 - horizontal main tube, 111 - main tube slot, 112 - horizontal main tube limiting hole, 12 - horizontal sub-tube, 121 - sub-tube slot, 122 - horizontal sub-tube limiting hole, 13 - extension rod;

[0038] 2 - Sliding arc height adjustment column, 2a - Main pipe side column, 2b - Main pipe middle column, 2c - Daughter pipe side column, 21 - Vertical main pipe, 211 - Main pipe horizontal insert plate, 212 - Vertical main pipe limiting hole, 22 - Vertical daughter pipe, 221 - Daughter pipe horizontal insert plate, 222 - Vertical daughter pipe limiting hole, 223 - Blind groove, 224 - Groove bottom plate, 225 - Clamping fixing hole;

[0039] 3 - Curvature adjustment component, 31 - Vertically adjustable bolt rod, 32 - Bolt rod core plate, 33 - Rotating shaft, 34 - Central column, 35 - Straightedge strip clamping plate, 36 - Core plate shaft hole, 37 - Clamping ear plate, 38 - Ear plate shaft hole;

[0040] 4 - Straightedge strip, 5 - Vertical limit bolt, 6 - Horizontal limit bolt. Detailed Implementation

[0041] See Example 1 Figure 1-8As shown, an adjustable straightedge for installing curved decorative panels includes a chord length adjusting main beam 1, three sliding arc height adjusting columns 2, an arc adjustment component 3, and a straightedge strip 4.

[0042] See Figure 1 , 3 As shown in Figure 6, the chord length adjusting main beam 1 includes a horizontal mother tube 11 and a horizontal daughter tube 12 that are sleeved on the left and right sides respectively. The adjusting end of the horizontal daughter tube 12 is inserted into the adjusting end of the horizontal mother tube 11. The chord length adjusting main beam 1 adjusts its length by sliding and limiting the horizontal daughter tube 12 within the horizontal mother tube 11.

[0043] In this embodiment, both the horizontal main pipe 11 and the horizontal sub-pipe 12 are square steel pipes. A row of horizontal sub-pipe limiting holes 122, which penetrate the top and bottom surfaces and are spaced apart, are provided along the horizontal sub-pipe 12. The adjusting end of the horizontal main pipe 11 is provided with a horizontal main pipe limiting hole 112 that penetrates the top and bottom surfaces. The horizontal main pipe limiting hole 112 and one of the horizontal sub-pipe limiting holes 122 are directly opposite each other and are limited by a vertical limiting bolt 5 that passes through the two holes.

[0044] The three sliding arc height adjustment columns 2 have the same structure. Each sliding arc height adjustment column 2 includes a vertical main tube 21 and a vertical sub-tube 22 that are sleeved together vertically. The bottom end of the horizontal sub-tube 12 is inserted into the top end of the horizontal main tube 11. The sliding arc height adjustment column 2 adjusts its height by sliding the vertical sub-tube 22 relative to the vertical main tube 21 and limiting its position.

[0045] In this embodiment, both the vertical main pipe 21 and the vertical sub-pipe 22 are square steel pipes. A row of vertical sub-pipe limiting holes 222 are provided along the vertical sub-pipe 22, which penetrate the front and rear sides and are spaced apart. The top of the vertical main pipe 21 is provided with a vertical main pipe limiting hole 212 that penetrates the front and rear sides. The vertical main pipe limiting hole 212 and one of the vertical sub-pipe limiting holes 222 are directly opposite each other and are limited by a horizontal limiting bolt 6 that passes through the two holes.

[0046] Three sliding arc height adjustment columns 2 are spaced apart along the length direction of the chord length adjustment main beam 1. The back side of each sliding arc height adjustment column 2 is close to the outer side of the chord length adjustment main beam 1. The sliding arc height adjustment column 2 is detachably connected to the relative chord length adjustment main beam 1 and the connection position is adjustable. The three sliding arc height adjustment columns 2 include a main pipe side column 2a and a main pipe middle column 2b set on one side of the horizontal main pipe 11, and a sub-pipe side column 2c set on one side of the horizontal sub-pipe 12.

[0047] A horizontal slot is provided on the side where the chord length adjusting main beam 1 connects to the sliding arc height adjusting column 2. A horizontal insert plate is provided at the bottom of the vertical mother tube 21. The depth of the horizontal insert plate inserted into the horizontal slot is no more than 1 / 3 of the width of the chord length adjusting main beam.

[0048] The front wall of the horizontal main pipe 11 has a horizontally continuous main pipe slot 111, and the front wall of the horizontal sub-pipe 12 has a horizontally continuous sub-pipe slot 121. The main pipe slot 111 and the sub-pipe slot 121 are centered and correspond to each other.

[0049] The horizontal insert plate 211 of the main tube side post 2a is inserted into the main tube slot 111 or into the overlapping position of the main tube slot 111 and the daughter tube slot 121, and can be adjusted by sliding left and right. The horizontal insert plate 211 of the main tube middle post 2b is inserted into the main tube slot 111 or into the overlapping position of the main tube slot 111 and the daughter tube slot 121, and can be adjusted by sliding left and right. The horizontal insert plate 221 of the daughter tube side post 2c is inserted into the daughter tube slot 121, and can be adjusted by sliding left and right.

[0050] The central column 2b of the main tube is positioned at the midpoint of the chord length. The height of the central column 2b is greater than that of the side columns 2a and 2c of the secondary tube. The side columns 2a and 2c are symmetrical and have the same height. The diameter of the side column 2c is greater than that of the side column 2a. In practical applications, the side columns 2a and 2c are typically positioned at 1 / 3 of the chord length of the main beam 1.

[0051] The fixed ends of the chord length adjusting main beam 1 are respectively fixedly connected to extension rods 13. The guide plate 4 is an elastic curved plate, with both ends fixedly connected to the extension rods 13. The width of the horizontal projection of the guide plate 4 is the same as the width of the guide plate 4. The top centers of the three sliding arc height adjusting columns 2 are all located in the same vertical plane. The extension rods 13 can be made of steel bars or steel strips.

[0052] The curvature adjustment component 3 is located at the top of the vertical sub-tube 22. The position of the curvature adjustment component 3 relative to the vertical sub-tube 22 is vertically adjustable. The bottom of the curvature adjustment component 3 can swing left and right relative to the top of the vertical sub-tube 22. The top of the curvature adjustment component 3 is clamped on the upper and lower surfaces of the inner side of the ruler plate 4 at the corresponding position.

[0053] Specifically, the top of the vertical sub-tube 22 is provided with a parallel chord length adjusting main beam 1 and a blind groove 223 in the left and right directions. The bottom of the blind groove 223 is provided with a bottom plate 224. The bottom plate 224 has a clamp fixing hole 225 with an internal thread.

[0054] The arc adjustment assembly 3 includes a vertically adjustable bolt rod 31, a bolt rod core plate 32, a rotating shaft 33, a central column 34, and a straightedge plate clamping plate 35. The bottom of the vertically adjustable bolt rod 31 is inserted into the clamp fixing hole 225 and threaded. The bolt rod core plate 32 is vertically fixedly connected to the top surface of the vertically adjustable bolt rod 31. The bolt rod core plate 32 has a horizontal core plate shaft hole 36. The bottom of the central column 34 is provided with a clamping ear plate 37. The clamping ear plate 37 has a horizontal ear plate shaft hole 38. The core plate shaft hole 36 is aligned with the ear plate shaft hole 38 and is rotatably connected by sequentially inserting the rotating shaft 33. The straightedge plate clamping plate 35 is perpendicular to the central column 34 and is detachably connected to the top of the central column 34.

[0055] The ruler strip clamp 35 is a round plate, and the spacing between the plates of the ruler strip clamp 35 is the same as the thickness of the ruler strip 4 at the corresponding position.

[0056] See Example 2 Figure 2 , 4 As shown in -5 and 7-8, unlike in Embodiment 1, in order to reduce the curvature of the straightedge plate 4, the length of the chord length adjusting main beam is adjusted to shorten it, the height of the sliding arc height adjusting column is adjusted to lower it, and the position of the sliding arc height adjusting column is adjusted to adapt relative to the chord length adjusting main beam. Then the straightedge plate 4 is connected to each arc adjustment component 3.

[0057] The usage process of this utility model is as follows:

[0058] Step 1: First, design and calculate the dimensions of each component and the opening range of the adjustable straightedge for installing the curved decorative panel based on the curvature range of the single-curved aluminum strip.

[0059] Step 2: After a portion of the single-curved aluminum strip panels is completed, typically 5 strips, the curved decorative panels are installed with adjustable straightedges and adjusted according to the design curvature of the completed section. The adjustment length of the main beam is adjusted by adjusting the chord length, the height of the sliding arc height adjustment column is adjusted by adjusting the height, and the height is finely adjusted by adjusting the curvature component. At the same time, the straightedge strip panels at the corresponding positions are clamped and fixed.

[0060] Step 3: Install the adjustable straightedge on the adjusted curved decorative panel and place it horizontally against the surface of the single-curved aluminum strip. Fine-tune the single-curved aluminum strip in any warped or misaligned areas until it fits snugly against the straightedge strip.

[0061] Step four: Repeat steps two and three until all single-curved aluminum strips have been checked.

Claims

1. An adjustable straightedge for installing curved decorative panels, characterized in that: It includes a chord length adjustable main beam (1), three sliding arc height adjustable columns (2), arc adjustment components (3), and straightedge strips (4). The chord length adjusting main beam (1) includes a horizontal main tube (11) and a horizontal sub-tube (12) that are sleeved on the left and right sides respectively. The adjusting end of the horizontal sub-tube (12) is inserted into the adjusting end of the horizontal main tube (11). The chord length adjusting main beam (1) adjusts its length by relative sliding and limiting the horizontal sub-tube (12) within the horizontal main tube (11). The three sliding height adjustment columns (2) have the same structure. Each sliding height adjustment column (2) includes a vertical main tube (21) and a vertical sub-tube (22) that are sleeved together vertically. The bottom end of the horizontal sub-tube (12) is inserted into the top end of the horizontal main tube (11). The height of the sliding height adjustment column (2) is adjusted by the relative sliding and limiting of the vertical sub-tube (22) within the vertical main tube (21). Three sliding arc height adjustment columns (2) are spaced apart along the length direction of the chord length adjustment main beam (1). The back side of each sliding arc height adjustment column (2) is close to the outer side of the chord length adjustment main beam (1). The sliding arc height adjustment column (2) is detachably connected to the relative chord length adjustment main beam (1) and the connection position is adjustable. The three sliding arc height adjustment columns (2) include a main pipe side column (2a) and a main pipe middle column (2b) set on one side of the horizontal main pipe (11), and a sub-pipe side column (2c) set on one side of the horizontal sub-pipe (12). The fixed ends of the chord length adjusting main beam (1) are respectively fixedly connected to extension rods (13). The guide plate (4) is an elastic curved plate, and its two ends are respectively fixedly connected to the extension rods (13). The width of the horizontal projection of the guide plate (4) is the same as the width of the guide plate (4). The top center of the three sliding arc height adjusting columns (2) are all located in the same vertical plane. The arc adjustment component (3) is set at the top of the vertical sub-tube (22). The position of the arc adjustment component (3) relative to the vertical sub-tube (22) is vertically adjustable. The bottom of the arc adjustment component (3) can swing left and right relative to the top of the vertical sub-tube (22). The top of the arc adjustment component (3) is clamped on the upper and lower surfaces of the inner side of the ruler plate (4) at the corresponding position.

2. The adjustable straightedge for installing curved decorative panels according to claim 1, characterized in that: The central column (2b) of the main tube is located in the middle of the chord length. The height of the central column (2b) of the main tube is greater than that of the side column (2a) of the main tube and the side column (2c) of the daughter tube. The side column (2a) of the main tube and the side column (2c) of the daughter tube are symmetrical from left to right and have the same height. The diameter of the side column (2c) of the daughter tube is greater than that of the side column (2a) of the main tube.

3. The adjustable straightedge for installing curved decorative panels according to claim 1 or 2, characterized in that: A horizontal slot is provided on the side where the chord length adjusting main beam (1) connects to the sliding arc height adjusting column (2), and a horizontal insert plate is provided at the bottom of the vertical mother tube (21). The depth of the horizontal insert plate inserted into the horizontal slot is no more than 1 / 3 of the width of the chord length adjusting main beam.

4. The adjustable straightedge for installing curved decorative panels according to claim 3, characterized in that: The front wall of the horizontal main pipe (11) has a horizontally continuous main pipe slot (111), and the front wall of the horizontal sub-pipe (12) has a horizontally continuous sub-pipe slot (121). The main pipe slot (111) and the sub-pipe slot (121) are centered and correspond to each other. The horizontal insert plate (211) of the mother tube side column (2a) is inserted into the mother tube slot (111) or into the overlapping position of the mother tube slot (111) and the daughter tube slot (121) and can be adjusted by sliding left and right. The horizontal insert plate (211) of the main tube column (2b) is inserted into the main tube slot (111) or into the overlapping position of the main tube slot (111) and the daughter tube slot (121) and can be adjusted by sliding left and right. The sub-tube horizontal insert plate (221) of the sub-tube side column (2c) is inserted into the sub-tube slot (121) and can be adjusted by sliding left and right.

5. The adjustable straightedge for installing curved decorative panels according to claim 1 or 4, characterized in that: Both the horizontal main pipe (11) and the horizontal sub-pipe (12) are square steel pipes. A row of horizontal sub-pipe limiting holes (122) are provided along the horizontal sub-pipe (12) that penetrate the top and bottom surfaces and are spaced apart. The adjusting end of the horizontal main pipe (11) is provided with a horizontal main pipe limiting hole (112) that penetrates the top and bottom surfaces. The horizontal main pipe limiting hole (112) and one of the horizontal sub-pipe limiting holes (122) are directly opposite each other and are limited by a vertical limiting bolt (5) that passes through the two holes.

6. The adjustable straightedge for installing curved decorative panels according to claim 1, characterized in that: Both the vertical main pipe (21) and the vertical sub-pipe (22) are square steel pipes. A row of vertical sub-pipe limiting holes (222) is provided along the vertical sub-pipe (22) that penetrate the front and rear sides and are spaced apart. The top of the vertical main pipe (21) is provided with a vertical main pipe limiting hole (212) that penetrates the front and rear sides. The vertical main pipe limiting hole (212) and one of the vertical sub-pipe limiting holes (222) are directly opposite each other and are limited by a horizontal limiting bolt (6) that passes through the two holes.

7. The adjustable straightedge for installing curved decorative panels according to claim 1 or 6, characterized in that: The top of the vertical sub-tube (22) is provided with a parallel chord length adjusting main beam (1) and a blind groove (223) in the left and right directions. The bottom of the blind groove (223) is provided with a bottom plate (224). The bottom plate (224) has a clamp fixing hole (225) and the clamp fixing hole (225) has an internal thread. The arc adjustment assembly (3) includes a vertically adjustable bolt rod (31), a bolt rod core plate (32), a rotating shaft (33), a central column (34), and a straightedge plate clamping plate (35). The bottom of the vertically adjustable bolt rod (31) is inserted into the clamp fixing hole (225) and threaded. The bolt rod core plate (32) is vertically fixedly connected to the top surface of the vertically adjustable bolt rod (31). The bolt rod core plate (32) has a horizontal core plate shaft hole (36). The bottom of the central column (34) is provided with a clamping ear plate (37). The clamping ear plate (37) has a horizontal ear plate shaft hole (38). The core plate shaft hole (36) and the ear plate shaft hole (38) are aligned and rotated by sequentially inserting the rotating shaft (33). The straightedge plate clamping plate (35) is perpendicular to the central column (34). The straightedge plate clamping plate (35) and the top of the central column (34) are detachably connected.

8. The adjustable straightedge for installing curved decorative panels according to claim 7, characterized in that: The ruler strip clamp (35) is a round plate, and the spacing between the plates of the ruler strip clamp (35) is the same as the thickness of the ruler strip (4) at the corresponding position.

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