Support carbon fiber square tube bending detection device

Abstract

The present invention relates to the technical field of curvature detection, and discloses a device for detecting the curvature of a supporting carbon fiber square tube. A fixed mounting block and a square tube clamp are used to fix one end of the carbon fiber square tube and leave the other end suspended. Only one inspector is required to fix the carbon fiber square tube by tightening bolts, and another inspector is required to detect the curvature of the carbon fiber square tube by a laser detector. The detection is convenient and quick, and the inspector responsible for detecting the curvature does not need to move around frequently, thereby improving the detection accuracy of the carbon fiber square tube. The corresponding fixed mounting block can be selected according to the cross-sectional size of the carbon fiber square tube to meet the fixing requirements of different carbon fiber square tubes, and the versatility is high. The outer side wall of a limiting plate and a support platform in the first horizontal direction is abutted against the square tube clamp for positioning, thereby realizing surface contact positioning and high positioning accuracy. The entire square tube clamp is conveniently fixed to the support platform through a bottom plate, thereby simplifying the weight of the entire square tube clamp.

Description

Technical Field

[0001] The present invention relates to the technical field of curvature detection, and in particular to a device for detecting the curvature of a supporting carbon fiber square tube. Background Art

[0002] Carbon fiber square tubes are manufactured through a composite process using a thermosetting resin matrix and carbon fiber as reinforcement. They feature high specific strength, high specific modulus, fatigue resistance, corrosion resistance, and strong designability. Currently, carbon fiber square tubes are mostly mass-produced using winding and compression molding methods. Rapidly extracting the core rod from the tube after molding improves mold turnover efficiency, reduces costs, and increases production capacity.

[0003] Currently, the bending of carbon fiber square tubes is mostly detected by the human eye or laser displacement equipment. First, the detection accuracy of human eye detection is not high. Second, due to the long length of carbon fiber square tubes, human eye detection requires frequent movement of the inspector, which is time-consuming and has low detection efficiency. Moreover, the frequent movement of the inspector can easily cause fatigue, which affects the detection accuracy.

[0004] Therefore, there is an urgent need for a bending detection device for supporting carbon fiber square tubes to solve the above technical problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a device for detecting the curvature of a supporting carbon fiber square tube, which can improve the detection accuracy and the detection efficiency of the curvature of the carbon fiber square tube.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] The device for detecting the curvature of a supporting carbon fiber square tube comprises:

[0008] Support platform;

[0009] A fixed mounting block, one end of which is used to be plugged into the carbon fiber square tube to be tested, and the other end of which is provided with two threaded holes extending along a first horizontal direction;

[0010] The support frame is fixed with a first end in a vertical direction and a second end in a horizontal direction, and the support frame is fixed with a first end in a vertical direction and a second end in a horizontal direction, and the support frame is fixed with a first end in a vertical direction and a second end in a horizontal direction.

[0011] Two fastening bolts, the two fastening bolts being arranged in a one-to-one correspondence with the two through-holes, the two fastening bolts respectively passing through the corresponding through-holes and then being threadedly connected to the corresponding threaded holes, so that the carbon fiber square tube can be spaced apart from the upper surface of the support platform;

[0012] A measuring bracket is installed on the supporting platform, and a rotating bracket is connected to the measuring bracket. A laser detector located above the other end of the carbon fiber square tube is installed on the rotating bracket. The rotating bracket can rotate around a vertical axis relative to the measuring bracket so that the laser beam emitted by the laser detector can hit the upper surface of the carbon fiber square tube.

[0013] As a preferred technical solution of the above-mentioned device for detecting the curvature of a supporting carbon fiber square tube, the vertical plate, the bottom plate and the limiting plate are an integrally formed structure.

[0014] As a preferred technical solution of the above-mentioned device for detecting the curvature of a supporting carbon fiber square tube, the bottom plate is detachably connected to the supporting platform.

[0015] As a preferred technical solution of the above-mentioned device for detecting curvature of a supporting carbon fiber square tube, the base plate is connected to the supporting platform by mounting bolts; or, the base plate is mounted on the supporting platform by a C-shaped clip.

[0016] As a preferred technical solution of the above-mentioned device for detecting curvature of a supporting carbon fiber square tube, it further includes a supporting pad, which is detachably arranged on the supporting platform and is used to support the carbon fiber square tube.

[0017] As a preferred technical solution of the above-mentioned device for detecting curvature of a supporting carbon fiber square tube, a plurality of the supporting pads are provided, and the plurality of the supporting pads are spaced apart along the first horizontal direction.

[0018] As a preferred technical solution of the above-mentioned device for detecting the curvature of the supporting carbon fiber square tube, the device further includes:

[0019] a first scale mounted on the upper surface of the support platform, the first scale being provided with scale lines distributed along a second horizontal direction, and the first scale being located below the laser detector;

[0020] A triangular caliper is movable along the second horizontal direction to abut against the outer side wall of the carbon fiber square tube on either side of the second horizontal direction; the first horizontal direction is perpendicular to the second horizontal direction.

[0021] As a preferred technical solution of the above-mentioned device for detecting curvature of a supporting carbon fiber square tube, a guide slot is provided on the supporting platform, and the lower end of the triangular caliper is slidably arranged in the guide slot along the second horizontal direction.

[0022] As a preferred technical solution of the above-mentioned device for detecting the curvature of the supporting carbon fiber square tube, the device further includes:

[0023] a lifting bracket, the lifting bracket being mounted on the measuring bracket, the lifting bracket being selectively movable relative to the measuring bracket or fixed, and the rotating bracket being rotatably mounted on the measuring bracket;

[0024] The second scale is mounted on the measuring bracket, and the scale is provided with scale lines distributed along the vertical direction.

[0025] As a preferred technical solution of the above-mentioned supporting carbon fiber square tube curvature detection device, it also includes a plurality of weights of different weights, which can be placed on the upper surface of the carbon fiber square tube away from the square tube clamp.

[0026] The beneficial effects of the present invention are as follows: one end of the fixed mounting block is inserted into one end of the carbon fiber square tube along the first horizontal direction, and abuts against the bottom wall of the positioning groove, and two fastening bolts are respectively passed through the corresponding through-holes and then threadedly connected to the corresponding threaded holes, and the other end of the fixed mounting block is inserted into the carbon fiber square tube along the first horizontal direction to fix one end of the carbon fiber square tube, and the other end of the carbon fiber square tube is suspended in the air; then, the rotating bracket is rotated so that the laser beam emitted by the laser detector hits the upper surface of the suspended end of the carbon fiber square tube, and the detection data of the laser detector is recorded, which is the curvature of the carbon fiber square tube.

[0027] After placing the carbon fiber square tube on the workbench, only one inspector is responsible for fixing the carbon fiber square tube by tightening the bolts, and another inspector is responsible for detecting the curvature of the carbon fiber square tube using a laser detector. The inspection is convenient and fast, and the inspector responsible for detecting the curvature does not need to move around frequently, which can improve the inspection accuracy of the carbon fiber square tube. In addition, the carbon fiber square tube is easy to fix and disassemble, which can improve the inspection efficiency.

[0028] A fixed mounting block and a square tube fixture are used to fix one end of a carbon fiber square tube, leaving the other end suspended, in preparation for measuring the curvature of the carbon fiber square tube. The corresponding fixed mounting block can be selected according to the cross-sectional dimensions of the carbon fiber square tube to meet the fixing requirements of different carbon fiber square tubes, providing high versatility and convenient replacement of the fixed mounting block after a period of use. The square tube fixture is positioned by abutting an outer wall of the first horizontal direction with a limiting plate and a support platform, achieving surface contact positioning with high positioning accuracy. This eliminates the need to machine positioning holes on the support platform and the square tube fixture, reducing processing costs. The entire square tube fixture can be conveniently fixed to the support platform via a base plate, reducing the weight of the entire square tube fixture. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in describing the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without any creative work.

[0030] Figure 1 1 is a partial structural diagram of a device for detecting curvature of a supporting carbon fiber square tube provided by an embodiment of the present invention;

[0031] Figure 2 1 is a schematic structural diagram of a square tube clamp provided by an embodiment of the present invention;

[0032] Figure 3 This is a partial front view of a device for detecting curvature of a supporting carbon fiber square tube provided by an embodiment of the present invention;

[0033] Figure 4 3 is a diagram showing the positional relationship between the support platform and the second scale provided by an embodiment of the present invention.

[0034] In the picture:

[0035] 1. Support platform; 11. Guide chute; 2. Fixed mounting block; 3. Square tube fixture; 31. Bottom plate; 32. Vertical plate; 33. Limit plate; 34. Positioning slot; 4. Support pad; 5. Measuring bracket; 6. Laser detector; 7. Rotating bracket; 8. Lifting bracket; 9. First scale; 10. Second scale

[0036] 100. Carbon fiber square tube. DETAILED DESCRIPTION

[0037] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It will be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all structures.

[0038] In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific circumstances.

[0039] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0040] In the description of this embodiment, the terms "upper," "lower," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meanings.

[0041] like Figures 1 to 4 As shown, this embodiment provides a device for detecting the curvature of a supporting carbon fiber square tube, which is used to detect the curvature of a supporting carbon fiber square tube 100 to confirm whether the curvature of the carbon fiber square tube 100, which has high requirements on supporting capacity, meets the requirements in the natural state and the load-bearing state.

[0042] The supporting carbon fiber square tube curvature detection device includes a supporting platform 1, a fixed mounting block 2, a square tube clamp 3, two fastening bolts and a measuring bracket 5, wherein one end of the fixed mounting block 2 is used to be plugged into the carbon fiber square tube 100 to be tested, and the other end is provided with two threaded holes extending along the first horizontal direction.

[0043] The square tube clamp 3 includes a bottom plate 31, a vertical plate 32 and a limiting plate 33. The two ends of the bottom plate 31 distributed along the first horizontal direction are respectively connected to the vertical plate 32 and the limiting plate 33. The vertical plate 32 is located above the bottom plate 31, and the limiting plate 33 is located below the bottom plate 31; the limiting plate 33 abuts the outer wall of the support platform 1 on one side of the first horizontal direction, and the bottom plate 31 is fixed to the upper surface of the support platform 1. The vertical plate 32 is provided with a positioning groove 34 on the side facing away from the limiting plate 33 in the first horizontal direction. The positioning groove 34 passes through the top surface of the vertical plate 32 to the bottom surface of the vertical plate 32; the positioning groove 34 is used to be plugged into and matched with one end of the carbon fiber square tube 100 along the first horizontal direction and can abut with the carbon fiber square tube 100 along the first horizontal direction; the bottom of the positioning groove 34 is provided with two through holes passing through along the first horizontal direction, and the two through holes correspond to the two threaded holes one by one. Two fastening bolts are provided in a one-to-one correspondence with the two through-holes. The two fastening bolts pass through the corresponding through-holes and are then threaded into the corresponding threaded holes, allowing the carbon fiber square tube 100 to be spaced apart from the upper surface of the support platform 1. A measuring bracket 5 is mounted on the support platform 1. A rotating bracket 7 is connected to the measuring bracket 5. The rotating bracket 7 is mounted on the laser detector 6 located above the other end of the carbon fiber square tube 100. The rotating bracket 7 can rotate about a vertical axis relative to the measuring bracket 5 so that the laser beam emitted by the laser detector 6 can hit the upper surface of the carbon fiber square tube 100.

[0044] Insert one end of the fixed mounting block 2 into one end of the carbon fiber square tube 100 along the first horizontal direction, and abut against the bottom wall of the positioning groove 34. Use two fastening bolts to pass through the corresponding through holes and then be threadedly connected to the corresponding threaded holes. Insert the other end of the fixed mounting block 2 into the carbon fiber square tube 100 along the first horizontal direction to fix one end of the carbon fiber square tube 100, and the other end of the carbon fiber square tube 100 is suspended in the air. Then rotate the rotating bracket 7 so that the laser beam emitted by the laser detector 6 hits the upper surface of the suspended end of the carbon fiber square tube 100, and the laser beam emitted by the laser detector 6 is close to the middle position of the carbon fiber square tube 100 in the second horizontal direction. Record the detection data of the laser detector 6, which is the curvature of the carbon fiber square tube 100.

[0045] In other embodiments, in order to improve the measurement accuracy, the bracket 7 can also be rotated so that the laser beam emitted by the laser detector 6 hits the upper surface of the carbon fiber square tube 100, and the laser beam emitted by the laser detector 6 is close to the edges of the carbon fiber square tube 100 on both sides of the second horizontal direction, and the two sets of detection data of the laser detector 6 are recorded; the average value of the above three sets of detection data can be taken to obtain the curvature of the carbon fiber square tube 100.

[0046] After the carbon fiber square tube 100 is placed on the workbench, only one inspector is required to fix the carbon fiber square tube 100 by tightening the bolts, and another inspector is required to detect the curvature of the carbon fiber square tube 100 using the laser detector 6. This makes the inspection convenient and quick, and the inspector responsible for detecting the curvature does not need to move around frequently, which can improve the inspection accuracy of the carbon fiber square tube 100. In addition, the carbon fiber square tube 100 is easy to fix and easy to disassemble and assemble, which can improve the inspection efficiency.

[0047] The fixed mounting block 2 and the square tube fixture 3 are used to fix one end of the carbon fiber square tube 100 and leave the other end suspended, preparing for the curvature measurement of the carbon fiber square tube 100. The corresponding fixed mounting block 2 can be selected according to the cross-sectional size of the carbon fiber square tube 100 to meet the fixing requirements of different carbon fiber square tubes 100, with high versatility. It is also convenient to replace the fixed mounting block 2 with a new one after a period of use. The square tube fixture 3 is positioned by abutting the outer wall of the support platform 1 in the first horizontal direction using the limit plate 33. This achieves surface contact positioning with high positioning accuracy, eliminating the need to machine positioning holes on the support platform 1 and the square tube fixture 3, reducing processing costs. The entire square tube fixture 3 is conveniently fixed to the support platform 1 via the base plate 31, reducing the weight of the entire square tube fixture 3.

[0048] The vertical plate 32, the bottom plate 31 and the limiting plate 33 are an integrally formed structure, which is simple in structure, easy to process and low in cost.

[0049] Furthermore, the bottom plate 31 is detachably connected to the supporting platform 1. With such a design, the square tube clamp 3 can be detachable, and the required square tube clamp 3 can be replaced according to actual needs.

[0050] Specifically, the base plate 31 is mounted to the support platform 1 using C-shaped clamps, making assembly and disassembly quick and easy. For example, two C-shaped clamps are used to mount the base plate 31 to the support platform 1. In other embodiments, the base plate 31 can also be connected to the support platform 1 using mounting bolts. To improve stability, multiple mounting bolts are used to secure the base plate 31 to the support platform 1.

[0051] Furthermore, the device for detecting curvature of a supporting carbon fiber square tube further includes a supporting pad 4 , which is detachably disposed on the supporting platform 1 and is used to support the carbon fiber square tube 100 .

[0052] When securing the carbon fiber square tube 100 using the fixed mounting block 2 and the square tube fixture 3, a support block 4 is placed on the support platform 1. The support block 4 supports the carbon fiber square tube 100, facilitating insertion of one end of the fixed mounting block 2 into the carbon fiber square tube 100. The carbon fiber square tube 100 is then pushed in a first horizontal direction, allowing the other end of the fixed mounting block 2 to be inserted into the positioning groove 34 along the first horizontal direction and abut against the bottom wall of the positioning groove 34. The fixed mounting block 2 is then secured to the square tube fixture 3 using tightening bolts. In this embodiment, the first horizontal direction is the axial direction of the carbon fiber square tube 100. This design allows the support block 4 to support the carbon fiber square tube 100 while the fixed mounting block 2 and the square tube fixture 3 are securing it, preventing installation deviations due to the weight of the carbon fiber square tube 100. After the carbon fiber square tube 100 is installed, the support block 4 can be removed to prevent it from interfering with the curvature measurement of the carbon fiber square tube 100.

[0053] Optionally, a plurality of support blocks 4 are provided, and the plurality of support blocks 4 are spaced apart along the first horizontal direction. Such a design can reduce the installation deviation of the carbon fiber square tube 100.

[0054] In order to avoid friction damage to the carbon fiber square tube 100 when the support block 4 is pulled out, an elastic protective layer, such as a rubber pad, can be optionally provided on the upper surface of the support block 4. In other embodiments, the support block 4 can also be made entirely of rubber.

[0055] Furthermore, the device for detecting the curvature of the supporting carbon fiber square tube further includes a first scale 9 and a triangular caliper. The first scale 9 is mounted on the upper surface of the supporting platform 1 and is provided with scale lines distributed along the second horizontal direction. The first scale 9 is located below the laser detector 6. The triangular caliper can move along the second horizontal direction to abut against the outer wall of the carbon fiber square tube 100 on either side of the second horizontal direction. The first horizontal direction and the second horizontal direction are perpendicular. For example, the second scale 10 is a sticker with scale lines drawn on it, which can be affixed to the upper surface of the supporting platform 1.

[0056] Push the triangular caliper in the second horizontal direction until it contacts the outer wall of the carbon fiber square tube 100 on one side of the second horizontal direction. Record the scale line corresponding to the triangular caliper at this time. Place the triangular caliper on the other side of the carbon fiber square tube 100 in the second horizontal direction. Push the triangular caliper in the second horizontal direction until it contacts the outer wall of the carbon fiber square tube 100 on the other side of the second horizontal direction. Record the scale line corresponding to the triangular caliper at this time. The difference between the two measured scale lines is the dimensional deviation of the carbon fiber square tube 100.

[0057] In other embodiments, two triangular calipers may be provided, and the two triangular calipers are respectively disposed on both sides of the carbon fiber square tube 100 in the second horizontal direction.

[0058] Furthermore, a guide slot 11 is provided on the support platform 1, and the lower end of the triangular caliper is slidably arranged in the guide slot 11 along the second horizontal direction. Such a design can guide the triangular caliper when the triangular caliper is pushed.

[0059] Furthermore, the supporting carbon fiber square tube curvature detection device also includes a lifting bracket 8 and a second scale 10, wherein the lifting bracket 8 is mounted on the measuring bracket 5, and the lifting bracket 8 can be selectively raised and lowered or fixed relative to the measuring bracket 5, and the rotating bracket 7 is rotatably mounted on the measuring bracket 5; the second scale 10 is mounted on the measuring bracket 5, and the second scale 10 is provided with scale lines distributed along the vertical direction. With this design, the height of the laser detector 6 can be adjusted according to actual needs, such as the width of the carbon fiber square tube 100 in the vertical direction. As for the drive mechanism for realizing the lifting and lowering of the lifting bracket 8, and the structure for realizing the rotation of the rotating bracket 7, both adopt the existing lifting drive mechanism and the rotation lifting structure, which are not specifically limited here.

[0060] Furthermore, the supporting carbon fiber square tube curvature detection device also includes multiple weights of varying weights, which can be placed on the upper surface of the end of the carbon fiber square tube 100 away from the square tube fixture 3. With the weights placed on the upper surface of the end of the carbon fiber square tube 100 away from the square tube fixture 3, a laser beam from a laser detector 6 is directed onto the upper surface of the suspended end of the carbon fiber square tube 100, and the detection data from the laser detector 6 is recorded. The ratio of the weight of the weights to the detection data from the laser detector 6 is the load on the carbon fiber square tube 100.

[0061] Furthermore, the above are only preferred embodiments of the present invention and the technical principles employed. Those skilled in the art will appreciate that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments, and substitutions are possible for those skilled in the art without departing from the scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments and may include many other equivalent embodiments without departing from the scope of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A device for detecting the curvature of a supporting carbon fiber square tube, characterized in that: include: Support platform (1); A fixed mounting block (2), one end of the fixed mounting block (2) being used for plugging into the carbon fiber square tube (100) to be tested, and the other end being provided with two threaded holes extending along a first horizontal direction; A square tube clamp (3), the square tube clamp (3) comprising a bottom plate (31), a vertical plate (32) and a limiting plate (33), the two ends of the bottom plate (31) distributed along the first horizontal direction are respectively connected to the vertical plate (32) and the limiting plate (33), the vertical plate (32) is located above the bottom plate (31), and the limiting plate (33) is located below the bottom plate (31); the limiting plate (33) abuts against the outer side wall of the support platform (1) on one side in the first horizontal direction, the bottom plate (31) is fixed to the upper surface of the support platform (1), A positioning groove (34) is provided on the side of the vertical plate (32) facing away from the limiting plate (33) in the first horizontal direction, and the positioning groove (34) is passed through from the top surface of the vertical plate (32) to the bottom surface of the vertical plate (32); the positioning groove (34) is used to be plugged and matched with one end of the carbon fiber square tube (100) along the first horizontal direction and can abut against the carbon fiber square tube (100) along the first horizontal direction; the bottom of the positioning groove (34) is provided with two through-holes passing through along the first horizontal direction, and the two through-holes correspond to the two threaded holes one by one; Two fastening bolts, the two fastening bolts being arranged in a one-to-one correspondence with the two penetration holes, the two fastening bolts respectively passing through the corresponding penetration holes and then being threadedly connected to the corresponding threaded holes, so that the carbon fiber square tube (100) can be spaced apart from the upper surface of the support platform (1); A measuring bracket (5) is mounted on the supporting platform (1), a rotating bracket (7) is connected to the measuring bracket (5), a laser detector (6) located above the other end of the carbon fiber square tube (100) is mounted on the rotating bracket (7), and the rotating bracket (7) is capable of rotating around a vertical axis relative to the measuring bracket (5) so that a laser beam emitted by the laser detector (6) can hit the upper surface of the carbon fiber square tube (100).

2. The device for detecting curvature of a supporting carbon fiber square tube according to claim 1, characterized in that: The vertical plate (32), the bottom plate (31) and the limiting plate (33) are an integrally formed structure.

3. The device for detecting curvature of a supporting carbon fiber square tube according to claim 1, characterized in that: The bottom plate (31) is detachably connected to the supporting platform (1).

4. The device for detecting curvature of a supporting carbon fiber square tube according to claim 3, characterized in that: The base plate (31) is connected to the support platform (1) via mounting bolts; or, the base plate (31) is mounted to the support platform (1) via a C-shaped clip.

5. The device for detecting curvature of a supporting carbon fiber square tube according to claim 1, wherein: It also includes a support pad (4), which is detachably arranged on the support platform (1) and is used to support the carbon fiber square tube (100).

6. The device for detecting curvature of a supporting carbon fiber square tube according to claim 5, characterized in that: A plurality of the support pads (4) are provided, and the plurality of the support pads (4) are spaced apart along the first horizontal direction.

7. The device for detecting curvature of a supporting carbon fiber square tube according to claim 1, characterized in that: Also includes: a first scale (9) mounted on the upper surface of the support platform (1), the first scale (9) being provided with scale lines distributed along a second horizontal direction, the first scale (9) being located below the laser detector (6); A triangular caliper is capable of moving along the second horizontal direction to abut against the outer side wall of the carbon fiber square tube (100) on either side of the second horizontal direction; the first horizontal direction is perpendicular to the second horizontal direction.

8. The device for detecting curvature of a supporting carbon fiber square tube according to claim 7, characterized in that: A guide slot (11) is provided on the support platform (1), and the lower end of the triangular caliper is slidably arranged in the guide slot (11) along the second horizontal direction.

9. The device for detecting curvature of a supporting carbon fiber square tube according to any one of claims 1 to 8, characterized in that: Also includes: a lifting bracket (8), the lifting bracket (8) being mounted on the measuring bracket (5), the lifting bracket (8) being selectively capable of being lifted or fixed relative to the measuring bracket (5), and the rotating bracket (7) being rotatably mounted on the measuring bracket (5); A second scale (10) is mounted on the measuring bracket (5), and the second scale (10) is provided with scale lines distributed along the vertical direction.

10. The device for detecting curvature of a supporting carbon fiber square tube according to any one of claims 1 to 8, characterized in that: It also includes a plurality of weights of different weights, and the weights can be placed on the upper surface of the carbon fiber square tube (100) at one end away from the square tube fixture (3).

Images