A strength testing device for carbon fiber bicycle frame

Abstract

The present invention discloses a strength detection device for a carbon fiber bicycle frame, which relates to the technical field of strength detection and includes a detection platform, wherein a support frame is fixedly connected to the top of the detection platform. In the present invention, when the adjustment dial rotates, the auxiliary disk and the extension block rotate synchronously, the guide rod slides along the extension block, and the limit plate can provide auxiliary position limiting for the frame. After the placement frame rotates, the second detection plate reaches the designated position above the detection platform, thereby achieving rapid positioning of the frame angle and ensuring the accuracy of the angle positioning. The second detection plate and the first detection plate respectively detect the frame in the horizontal and vertical directions, and the force deformation data of different positions of the frame in different directions can be obtained respectively. By integrating multiple sets of data, it is convenient to comprehensively evaluate the overall strength of the frame. The first visual detection component and the second visual detection component can collect image information around the detection position of the frame, thereby facilitating rapid identification of whether the frame surface and weld are deformed, thereby ensuring the accuracy of the strength detection.

Description

Technical Field

[0001] The present invention relates to the technical field of strength detection, in particular to a strength detection device for a carbon fiber bicycle frame. Background Art

[0002] Carbon fiber is a microcrystalline graphite material obtained by carbonizing and graphitizing organic fibers. A carbon fiber bicycle frame is a bicycle frame made of carbon fiber composite materials. It has many unique advantages such as light weight, high strength and good impact absorption.

[0003] For example, Chinese patent CN218382136U discloses a strength detection device for a carbon fiber bicycle frame, which includes a base plate, a supporting foot fixedly installed at the bottom end of the base plate, an L-shaped support frame fixedly installed on the rear side of the top of the base plate, a servo motor 1 fixedly installed on the rear side of the top of the L-shaped support frame, an output shaft of the servo motor 1 fixedly sleeved with a ball screw 1, an auxiliary rod 1 fixedly installed on the top of the L-shaped support frame, a horizontal movable seat engaged with the surface of the ball screw 1, a cylinder 1 fixedly installed at the bottom end of the horizontal movable seat, an output shaft of the cylinder 1 fixedly connected to a clamping bin, a servo motor 2 fixedly installed at the front end of the clamping bin, and an output shaft of the servo motor 2 fixedly sleeved with a ball screw 2.

[0004] In the above patent, although the problems of long placement and fixation time and low detection efficiency are solved by clamping rods and pneumatic cylinders, the frame fixing angle is adjusted by manually unscrewing the plug rods and replacing the threaded holes to achieve strength testing at different angles. This process requires interrupting the detection process and relies on manual operation. Manual adjustment can easily lead to inaccurate angle positioning, affecting the consistency of the test results. Summary of the Invention

[0005] The purpose of the present invention is to provide a strength testing device for a carbon fiber bicycle frame to solve the problem proposed in the above-mentioned background technology that the frame fixing angle is adjusted by manually unscrewing the plug rod and replacing the threaded hole to achieve strength testing at different angles. This process requires interrupting the testing process and relies on manual operation. Manual adjustment can easily lead to inaccurate angle positioning, affecting the consistency of the test results.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solutions: a strength testing device for a carbon fiber bicycle frame, comprising a testing platform, a support frame fixedly connected to the top of the testing platform, an auxiliary component provided on one side of the support frame, the auxiliary component comprising an adjusting dial, a driving disc and an auxiliary disc, a first synchronous belt being transmission-connected between the adjusting dial and the driving disc, a second synchronous belt being transmission-connected between the adjusting dial and the auxiliary disc, an extension rod being fixedly connected to one side of the auxiliary disc, an extension strip being overlapped on the outer ring surface of the extension rod, a guide rod being fixedly connected to one side of the extension strip, a connecting block being fixedly connected to one end of the guide rod, a limiting plate being fixedly connected to the bottom of the connecting block, one side of the limiting plate being plugged into the testing platform, a supporting plate being fixedly connected to the top of the testing platform, one side of the supporting plate being rotatably connected to the auxiliary disc, an extension block being fixedly connected to one side of the support plate, the extension block being penetrated by the guide rod, and the guide rod and the extension block being slidably connected;

[0007] The shaft of the adjusting turntable is fixedly connected to a placing frame, one side of the placing frame is fixedly connected to a reinforcement plate, one side of the reinforcement plate is fixedly connected to a second hydraulic cylinder, one end of the second hydraulic cylinder is fixedly connected to a second detection plate, one side of the second detection plate is slidably connected to the detection platform, a first detection plate is arranged above the detection platform, and the top of the first detection plate is fixedly connected to a first hydraulic cylinder.

[0008] Preferably, one side of the driving disc is fixedly connected to the output shaft of the servo motor, one side of the servo motor is fixedly connected to the support frame, and the support frame is rotationally connected to the adjustment turntable.

[0009] Preferably, the top of the hydraulic cylinder is connected to a guide block by bolts, one side of the guide block is slidably connected to a support cross bar, the bottom of the support cross bar is rotatably connected to a threaded rod, the threaded rod is connected to an L-shaped piece by threads, and one side of the L-shaped piece is fixedly connected to the bottom of the guide block.

[0010] Preferably, the bottom of the supporting cross bar is fixedly connected to a hydraulic push rod 1 and a hydraulic push rod 2, and the bottoms of the hydraulic push rod 1 and the hydraulic push rod 2 are fixedly connected to the support frame.

[0011] Preferably, the top of the limiting plate is connected to an auxiliary plate by bolts, and the top of the auxiliary plate is plugged with visual detection component 2, and visual detection component 1 is provided on one side of visual detection component 2. One end of visual detection component 1 is rotatably connected to a support platform, and one side of the support platform is plugged with the auxiliary plate.

[0012] Preferably, a placement block is fixedly connected to one side of the placement rack, an arc-shaped groove is opened on one side of the placement block, and a pneumatic finger is provided on one side of the placement block.

[0013] Preferably, the pneumatic finger is engaged with the placement rack, one end of the pneumatic finger is connected to a clamping plate through a bolt, one side of the clamping plate is engaged with a pressure sensor, and the clamping plate and the placement rack are slidably connected.

[0014] Preferably, a guide groove is provided on the top of the testing table, a cleaning plate is slidably connected in the guide groove, an electric push rod is fixedly connected to one side of the cleaning plate, one end of the electric push rod is fixedly connected to a mounting plate, and the bottom of the mounting plate is plugged into the collection basket.

[0015] Preferably, a collecting basket is connected to the bottom of the testing platform by bolts, and a discharge port is provided on one side of the collecting basket.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] In the present invention, the adjusting turntable is fixedly connected to the placement frame, and the connecting blocks are fixedly connected to the guide rod and the limit plate respectively. When the adjusting turntable rotates, the auxiliary plate and the extension block rotate synchronously, the guide rod slides along the extension block, and the limit plate can provide auxiliary limiting assistance for the frame. After the placement frame rotates, the detection plate 2 reaches the specified position above the detection platform, and the frame angle is quickly positioned to ensure the accuracy of the angle positioning. The frame is detected in the horizontal and vertical directions respectively by the detection plate 2 and the detection plate 1, and the force and deformation data of different positions of the frame in different directions can be obtained respectively. By integrating multiple sets of data, it is convenient to comprehensively evaluate the overall strength of the frame.

[0018] 2. In the present invention, the pneumatic fingers are fixedly connected to the splint, and one side of the auxiliary plate is fixedly connected to the placement frame to engage the vehicle frame with the placement block. The pneumatic fingers drive the splint to move and adjust the distance between the two splints. The splint clamps the frame to reduce the shaking of the frame during rotation and ensure the stability of the frame. After the frame is adjusted, the visual inspection component 1 and the visual inspection component 2 reach the specified position. The visual inspection component 1 and the visual inspection component 2 can collect image information around the frame detection position, which is convenient for quickly identifying whether the frame surface and the weld are deformed, thereby ensuring the accuracy of the strength detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of a strength detection device for a carbon fiber bicycle frame according to the present invention;

[0020] Figure 2 This is a schematic diagram of the installation structure of a hydraulic push rod of a carbon fiber bicycle frame strength detection device of the present invention;

[0021] Figure 3 This is a schematic diagram of the installation of a threaded rod structure of a strength testing device for a carbon fiber bicycle frame according to the present invention;

[0022] Figure 4 This is a schematic diagram of the installation of a placement block structure of a strength detection device for a carbon fiber bicycle frame according to the present invention;

[0023] Figure 5 This is a schematic diagram of the installation structure of the second hydraulic cylinder of a strength testing device for a carbon fiber bicycle frame according to the present invention;

[0024] Figure 6 This is a schematic diagram of the installation structure of auxiliary components of a carbon fiber bicycle frame strength detection device of the present invention;

[0025] Figure 7 This is a schematic diagram of the installation structure of a synchronous belt of a carbon fiber bicycle frame strength detection device of the present invention;

[0026] Figure 8 This is a schematic diagram of the installation of a connecting block structure of a carbon fiber bicycle frame strength detection device of the present invention;

[0027] Figure 9 The figure is a schematic diagram of the installation of the extension rod structure of a strength detection device for a carbon fiber bicycle frame according to the present invention.

[0028] In the picture:

[0029] 1. Support crossbar; 11. Hydraulic push rod 1; 12. L-shaped member; 121. Threaded rod; 122. Guide block; 123. Hydraulic cylinder 1; 124. Inspection plate 1; 13. Hydraulic push rod 2; 2. Inspection table; 21. Support frame; 22. Auxiliary plate; 221. Support table; 222. Visual inspection component 1; 223. Visual inspection component 2; 23. Inspection plate 2; 231. Hydraulic cylinder 2; 232. Reinforcement plate; 24. Placement rack; 24 1. Clamp; 242. Pneumatic finger; 243. Placement block; 25. Limiting plate; 3. Collection basket; 4. Electric push rod; 41. Cleaning plate; 5. Auxiliary components; 51. Servo motor; 52. Synchronous belt 1; 521. Adjustment turntable; 522. Drive disk; 53. Auxiliary disk; 531. Guide rod; 532. Connecting block; 533. Support plate; 534. Extension bar; 535. Extension block; 536. Extension rod; 54. Synchronous belt 2. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention. Example

[0031] A carbon fiber bicycle frame strength testing device realizes full-process automation of multi-angle strength testing of the frame through the combination of mechanical transmission, automatic control and visual inspection technology.

[0032] 1. Working Principle

[0033] Frame installation and fixing

[0034] Positioning clamping:

[0035] The frame is placed in the placement block 243 of the placement rack 24, and the arc groove is used to fit the frame contour for positioning. The external control system drives the pneumatic fingers 242 to move the clamping plate 241. The clamping force is monitored in real time by the pressure sensor to achieve adaptive clamping of the frame, ensure fixation stability, and reduce damage to the frame during clamping.

[0036] Auxiliary limit:

[0037] The limit plate 25 is connected to the auxiliary plate 22 by bolts. When the angle of the placement frame 24 is adjusted, the limit plate 25 moves synchronously with the auxiliary component and finally plugs into the detection platform 2 to form a physical limit to prevent the frame from shaking.

[0038] Automatic adjustment of detection angle

[0039] Powertrain:

[0040] The servo motor 51 drives the driving disk 522 to rotate, which in turn drives the adjusting dial 521 to rotate through the synchronous belt 1 52. The adjusting dial 521 is fixedly connected to the placement frame 24 to achieve the frame flip. At the same time, the adjusting dial 521 drives the auxiliary disk 53 to rotate synchronously through the synchronous belt 2 54 to ensure angle consistency.

[0041] Guide limit linkage:

[0042] As auxiliary plate 53 rotates, extension rod 536 pushes extension bar 534 radially, driving guide rod 531 and connecting block 532 to slide. Guided by extension block 535, stop plate 25 precisely moves to the target position, plugging into test platform 2 and completing automatic positioning of the frame angle (e.g., switching from horizontal to vertical).

[0043] Multi-directional strength testing

[0044] Horizontal direction detection:

[0045] The second hydraulic cylinder 231 is fixed to the placement frame through the reinforcement plate 232, driving the second detection plate 23 to move horizontally along the detection platform 2, applying lateral pressure to the frame to simulate the lateral load during riding.

[0046] Vertical direction detection:

[0047] Hydraulic cylinder 123 drives detection plate 124 downward vertically, applying vertical pressure to the frame. By adjusting the position of guide block 122 through threaded rod 121, the contact point of detection plate 124 can be changed, enabling detection of different parts of the frame, such as the top and bottom of the frame.

[0048] Load Control:

[0049] The hydraulic cylinder has a built-in pressure sensor that provides real-time feedback of load data to ensure that the detection force meets the standards.

[0050] Visually assisted detection and data analysis

[0051] Image acquisition:

[0052] The visual inspection component 1 222 (such as an industrial camera) adjusts its angle through the support platform 221, and the visual inspection component 223 is fixed to the auxiliary plate 22 to take pictures of the frame surface and welds before and after inspection to collect image information such as deformation and cracks.

[0053] Defect Identification:

[0054] The external control terminal uses deep learning algorithms (such as convolutional neural networks) to analyze images, compare them with standard sample libraries, automatically identify surface damage or internal defects of the frame, and generate a comprehensive strength report based on pressure data.

[0055] Cleaning after testing

[0056] Mechanical cleaning:

[0057] The electric push rod 4 drives the cleaning plate 41 to slide along the guide groove of the detection platform 2 to sweep the carbon fiber debris into the collection basket 3.

[0058] Dust collection:

[0059] The discharge port at the bottom of the collection basket 3 can be connected to an external vacuum cleaning system to further clean fine dust and keep the testing environment clean.

[0060] 2. Summary of Core Principles

[0061] Automatic angle adjustment technology

[0062] Through synchronous belt drive + mechanical linkage mechanism, the traditional manual hole-changing operation is replaced, and the rapid switching of the frame detection angle is achieved, the positioning error is reduced, and the detection efficiency and consistency are significantly improved.

[0063] Multi-dimensional load simulation

[0064] Bidirectional loading: Independent loading in the horizontal and vertical directions, covering the main stress scenarios of the frame (such as vertical load during riding and lateral load when turning).

[0065] Adjustable test point: The position of the test plate can be adjusted manually or electrically via the threaded rod 121 to suit the test requirements of different frame components (such as the seat tube and down tube).

[0066] Vision and mechanical data fusion

[0067] Non-contact testing: Industrial cameras capture the surface deformation of the frame in real time, making up for the deficiency of traditional mechanical testing that cannot intuitively identify fine cracks.

[0068] Intelligent analysis: Image recognition algorithms are combined with pressure data to achieve automatic defect marking and strength level assessment, reducing manual interpretation errors.

[0069] Modular design and easy maintenance

[0070] Independent components: Clamping, transmission, detection, and cleaning modules can be quickly disassembled and assembled, facilitating equipment maintenance and upgrades.

[0071] Compatibility and scalability: By replacing the curvature of the placement block 243 and adjusting the spacing between the splints 241, the device can be adapted to different types of frames such as road bikes and mountain bikes, thereby improving the versatility of the device.

[0072] 3. Technical Advantages and Application Value

[0073] Improved efficiency: Automated testing processes reduce manual intervention, and the time required for a single test is shorter than traditional methods.

[0074] Accuracy guarantee: Synchronous belt drive + angle encoder ensures accurate angle positioning, and visual inspection can detect the lowest level of cracks.

[0075] Cost optimization: Modular design reduces custom development costs and is suitable for small and medium-sized frame manufacturers and third-party testing agencies.

[0076] Through technological integration and innovation, the device solves the problems of cumbersome manual operation and single detection dimension of existing testing equipment, providing an efficient and reliable solution for the quality control of carbon fiber bicycle frames.

[0077] Example 2: Reference Figures 1-9 As shown: A strength testing device for a carbon fiber bicycle frame includes a testing platform 2, a support frame 21 is fixedly connected to the top of the testing platform 2, an auxiliary component 5 is provided on one side of the support frame 21, the auxiliary component 5 includes an adjusting dial 521, a driving disc 522 and an auxiliary disc 53, a synchronous belt 1 52 is connected between the adjusting dial 521 and the driving disc 522, a synchronous belt 2 54 is connected between the adjusting dial 521 and the auxiliary disc 53, an extension rod 536 is fixedly connected to one side of the auxiliary disc 53, an extension strip 534 is overlapped on the outer ring surface of the extension rod 536, and a guide bar 534 is fixedly connected to one side of the extension strip 534. Rod 531, one end of the guide rod 531 is fixedly connected to the connecting block 532, the bottom of the connecting block 532 is fixedly connected to the limit plate 25, and one side of the limit plate 25 is plugged into the detection platform 2; the shaft of the adjusting turntable 521 is fixedly connected to the placement rack 24, one side of the placement rack 24 is fixedly connected to the reinforcement plate 232, one side of the reinforcement plate 232 is fixedly connected to the hydraulic cylinder 231, one end of the hydraulic cylinder 231 is fixedly connected to the detection plate 23, one side of the detection plate 23 is slidably connected to the detection platform 2, and a detection plate 124 is arranged above the detection platform 2, and the top of the detection plate 124 is fixedly connected to the hydraulic cylinder 123.

[0078] The top of the testing table 2 is fixedly connected to a support plate 533, and one side of the support plate 533 is rotatably connected to the auxiliary disk 53. One side of the support plate 533 is fixedly connected to an extension block 535, and the extension block 535 is penetrated by the guide rod 531, and the guide rod 531 and the extension block 535 are slidably connected. One side of the driving disk 522 is fixedly connected to the output shaft of the servo motor 51, and one side of the servo motor 51 is fixedly connected to the support frame 21, and the support frame 21 is rotatably connected to the adjusting turntable 521. The top of the hydraulic cylinder 123 is connected to the guide block 122 by bolts, and one side of the guide block 122 is slidably connected to the support cross bar 1, and the bottom of the support cross bar 1 is rotatably connected to the threaded rod 121, and the threaded rod 121 is threadedly connected to the L-shaped part 12, and one side of the L-shaped part 12 is fixedly connected to the bottom of the guide block 122, and the bottom of the support cross bar 1 is respectively fixedly connected to the hydraulic push rod 11 and the hydraulic push rod 2 13, and the bottoms of the hydraulic push rod 11 and the hydraulic push rod 2 13 are both fixedly connected to the support frame 21.

[0079] In this embodiment, the servo motor 51 can provide power for the rotation of the driving disk 522, and the transmission between the driving disk 522 and the adjusting dial 521 can be realized through the synchronous belt 1 52. When the adjusting dial 521 rotates, the placement frame 24 can be driven to flip, thereby realizing the adjustment of the frame detection angle. When the placement frame 24 flips, the support frames 21 on both sides can support the placement frame 24, thereby ensuring the stability of the placement frame 24 when rotating. The frame can be switched from a horizontal state to a vertical state above the detection platform 2, and the transmission between the adjusting dial 521 and the auxiliary disk 53 can be realized through the synchronous belt 2 54, ensuring that the adjusting dial 521 and the auxiliary disk 53 rotate synchronously, and the extension rod One end of 536 is engaged in the cavity of the extension bar 534. When the extension bar 536 rotates synchronously with the auxiliary disk 53, a force can be applied to the extension bar 534, thereby driving the extension bar 534 to move. When the extension bar 534 and the guide bar 531 move, the extension block 535 can guide the movement of the guide bar 531, thereby driving the connecting block 532 and the limiting plate 25 to move synchronously with the guide bar 531, adjusting the distance between the limiting plate 25 and the detection platform 2, so that when the placement rack 24 is flipped to a vertical state, one side of the limiting plate 25 can be plugged into the detection platform 2, and one side of the limiting plate 25 is engaged with the vehicle frame, thereby limiting the vehicle frame and reducing the shaking of the vehicle frame during detection;

[0080] The reinforcing plate 232 can be used to achieve stable installation of the hydraulic cylinder 231 on one side of the placement frame 24, and the hydraulic cylinder 231 is used to drive the detection plate 23 to move, and the detection plate 23 can be used to perform pressure testing on the frame. The threaded rod 121 can be used to adjust the use position of the guide block 122 on one side of the supporting crossbar 1, so that the contact position of the detection plate 124 with the frame after moving down can be changed, so that pressure testing can be performed on different positions of the frame. The guide block 122 and the detection plate 124 can be connected by the hydraulic cylinder 123, and the detection plate 124 can be driven to move down by the hydraulic cylinder 123 to perform pressure testing on the frame in the vertical direction. The detection plate 124 and the detection plate 23 can be used to perform pressure testing on the frame in the vertical and horizontal directions respectively. The strength parameters of the frame can be obtained by combining the test results in the two directions.

[0081] Horizontal detection is performed first, and then switched to the vertical direction to avoid deformation accumulation caused by multiple stresses on the frame. Before each detection, the visual detection component 1 222 and the visual detection component 2 223 automatically scan the detection area to establish an initial image reference. The position of the detection plate 1 124 is adjusted by the threaded rod 121, and vertical loading tests can be performed on key parts of the frame such as the seat tube, down tube, and head tube. Through the rigid connection between the reinforcement plate 232 and the hydraulic cylinder 2 231, the fine adjustment of the threaded rod 121, and the coordinated control of the load in both directions, the device realizes full-dimensional quantitative detection of the strength of the carbon fiber frame. Among them, the load is dispersed by the reinforcement plate 232, and the reinforcement plate 232 can disperse the reaction force of the hydraulic cylinder 2 231 to the overall frame of the placement frame to avoid deformation caused by local stress concentration. The guidance of the detection platform 2 can ensure the detection accuracy and facilitate the accurate collection of the frame deformation data. During the detection, the main force direction of the frame can be covered. The defect recognition rate can be improved through data fusion technology, thereby ensuring the accuracy of the detection.

[0082] Example 3: According to Figures 1-4As shown, the top of the limit plate 25 is connected to the auxiliary plate 22 by bolts, and the top of the auxiliary plate 22 is plugged with a visual detection component 223, and a visual detection component 1 222 is provided on one side of the visual detection component 223. One end of the visual detection component 1 222 is rotatably connected to a support table 221, and one side of the support table 221 is plugged with the auxiliary plate 22. A placement block 243 is fixedly connected to one side of the placement frame 24, and an arc groove is provided on one side of the placement block 243. A pneumatic finger 242 is provided on one side of the placement block 243. The pneumatic finger 242 It is engaged with the placement rack 24, and one end of the pneumatic finger 242 is connected to the splint 241 by bolts. A pressure sensor is engaged with one side of the splint 241. The splint 241 is slidingly connected to the placement rack 24. A guide groove is provided on the top of the detection table 2, and a cleaning plate 41 is slidingly connected in the guide groove. An electric push rod 4 is fixedly connected to one side of the cleaning plate 41, and one end of the electric push rod 4 is fixedly connected to the mounting plate. The bottom of the mounting plate is plugged into the collecting basket 3, and the bottom of the detection table 2 is connected to the collecting basket 3 by bolts. A discharge port is provided on one side of the collecting basket 3.

[0083] In this example, the limit plate 25 is used to support the bottom of the auxiliary plate 22, which facilitates the synchronous movement of the limit plate 25 and the auxiliary plate 22, so that when the frame is flipped, the use position of the auxiliary plate 22 and the limit plate 25 can be adjusted. The limit plate 25 can be used to assist in limiting the frame. By plugging one side of the limit plate 25 with the inspection table 2, the use position of the auxiliary plate 22 can be limited. The image of the frame is collected by the visual inspection component 1 222 and the visual inspection component 2 223, thereby assisting in the judgment of the weld condition after subsequent inspection. The placement block 243 can assist in placing the frame on the top of the placement rack 24. The distance between the two clamps 241 can be adjusted by the pneumatic finger 242, so that the clamp 241 can be used to clamp one end of the frame, thereby improving the stability of the frame installed on the placement rack 24. The air circuit system of the pneumatic finger 242 is equipped with a proportional pressure valve, which can automatically adjust the clamping force according to the diameter of the frame pipe. The clamp 241 has a built-in thin film pressure sensor to provide real-time feedback of the clamping force data. When the force difference between the two side clamps 241 is greater than 5N, the system automatically adjusts the air pressure of the air gripper to ensure that the frame is evenly stressed. The electric push rod 4 can drive the cleaning plate 41 to move above the detection table 2. The front end of the cleaning plate 41 is a soft rubber scraper for cleaning larger particles, thereby cleaning the debris that falls above the detection table 2 and collecting the debris into the collection basket 3.

[0084] The process and working principle of this device are as follows: first, the carbon fiber bicycle frame to be inspected is engaged with the placement block 243, and the pneumatic finger 242 is driven by an external control. The contact surface of the splint 241 is covered with a protective pad to increase friction while avoiding scratching the surface coating of the frame. The two splints 241 clamp the frame. While clamping, the built-in pressure sensor of the splint 241 is used to detect the clamping force of the frame, and the detection data is transmitted to the external control terminal to avoid damage to the frame caused by excessive clamping force of the splint 241. When the clamping force exceeds the predetermined value, the clamping force is adjusted to achieve stable installation of the frame on the top of the placement rack 24. Before testing, a speckle pattern is sprayed on the surface of the frame. The visual algorithm calculates the local deformation by tracking the speckle displacement. When the hydraulic cylinder 123 is loaded to 80% of the target load, the external PLC Send a signal to the visual inspection component 222 to trigger the high-speed camera to continuously take images, calculate the surface strain distribution of the frame by digital image correlation (DIC), select the inspection direction of the frame, and when the frame is inspected horizontally, there is no need to rotate the placement frame 24. First, perform the vertical inspection and then switch to the horizontal direction to avoid the frame being subjected to horizontal force first, which causes positioning deviation during vertical inspection and reduces the influence of creep. Use the hydraulic cylinder 123 to drive the inspection plate 124 downward so that the inspection plate 124 can pressurize the frame. After the inspection, the hydraulic cylinder 231 drives the inspection plate 23 to the side. Move to one side of the vehicle frame, apply pressure to the frame, and observe the deformation of the frame at the contact points with the detection plate 1 124 and the detection plate 2 23. Use the visual detection component 1 222 and the visual detection component 2 223 to collect image information of the detection position, and use the external control terminal to identify and judge the image. The visual detection component 1 222 can rotate ±45° through the support platform 221 to capture the front and side images of the frame; the visual detection component 223 is fixed to the auxiliary plate 22 to capture the details of the top weld, forming a three-view image set that covers more than 90% of the detection area of ​​the frame.

[0085] When the vehicle frame is vertically detected, the driving disk 522 is driven to rotate by the servo motor 51, and the adjusting dial 521 is rotated under the drive of the synchronous belt 1 52. The adjusting dial 521 and the auxiliary disk 53 are rotated synchronously by the synchronous belt 2 54. The adjusting dial 521 rotates, which can drive the placement rack 24 and the vehicle frame to rotate synchronously. The vehicle frame and the placement rack 24 are tilted, and the detection direction of the vehicle frame is changed until the placement rack 24 is in a vertical state. When the auxiliary disk 53 rotates, the extension block 535 rotates synchronously with the auxiliary disk 53, exerting a force on the extension bar 534, so that the extension bar 534 drives the guide rod 5 31 slides along the extension block 535. At this time, the guide rod 531 and the connecting block 532 move synchronously. The connecting block 532 drives the limit plate 25 to move toward the side close to the detection platform 2. When the limit plate 25 moves, the auxiliary plate 22 moves synchronously with the limit plate 25 until one side of the limit plate 25 is plugged into the frame to achieve the limit fixation of the frame. The auxiliary plate 22 and the visual detection component 1 222 and the visual detection component 2 223 arrive at the designated detection position. The visual detection component 1 222 can be adjusted and its position can be calibrated to ensure the scanning range of the visual detection component 1 222.

[0086] The hydraulic cylinder 123 is used to drive the detection plate 124 to move downward, so that the detection plate 124 contacts the frame and continues to pressurize the frame to perform strength testing on the frame in the vertical direction. After the test, the hydraulic cylinder 231 is used to drive the detection plate 23 to slide along the top of the detection platform 2. The detection plate 23 is used to apply a force to the frame to achieve strength testing of the frame in the horizontal direction. After the test, the image information around the detection position of the frame is collected by the visual detection component 1 222 and the visual detection component 2 223. The external control terminal is used to judge whether the frame is damaged based on the recognition result of the image, so as to obtain the current strength of the frame. After the test, the electric push rod 4 is used to drive the cleaning plate 41 to slide on the top of the detection platform 2, and the debris dropped from the top of the detection platform 2 is swept into the collection basket 3. After the cleaning is completed, the cleaning plate 41 moves in the opposite direction to drive the adjustment dial 521 to automatically return to the initial position, and the detection plate 124 and the detection plate 23 are automatically returned to the initial position. Returning to the initial point, the pneumatic finger 242 is released, and the detected frame can be taken out from the placement rack 24 and a new frame to be tested can be placed in.

[0087] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A strength testing device for a carbon fiber bicycle frame, comprising a testing platform (2), characterized in that: The top of the test table (2) is fixedly connected to a support frame (21), and an auxiliary component (5) is provided on one side of the support frame (21). The auxiliary component (5) includes an adjusting turntable (521), a driving disk (522) and an auxiliary disk (53). A synchronous belt 1 (52) is connected between the adjusting turntable (521) and the driving disk (522). A synchronous belt 2 (54) is connected between the adjusting turntable (521) and the auxiliary disk (53). An extension rod (536) is fixedly connected to one side of the auxiliary disk (53). An extension strip (534) is overlapped on the outer ring surface of the extension rod (536). The extension strip (534) ) is fixedly connected to a guide rod (531) on one side, a connecting block (532) is fixedly connected to one end of the guide rod (531), a limiting plate (25) is fixedly connected to the bottom of the connecting block (532), one side of the limiting plate (25) is plugged into the detection table (2), a supporting plate (533) is fixedly connected to the top of the detection table (2), one side of the supporting plate (533) is rotatably connected to the auxiliary disk (53), one side of the supporting plate (533) is fixedly connected to an extension block (535), the extension block (535) is penetrated by the guide rod (531), and the guide rod (531) and the extension block (535) are slidably connected; The shaft of the adjusting turntable (521) is fixedly connected to a placement frame (24), one side of the placement frame (24) is fixedly connected to a reinforcement plate (232), one side of the reinforcement plate (232) is fixedly connected to a second hydraulic cylinder (231), one end of the second hydraulic cylinder (231) is fixedly connected to a second detection plate (23), one side of the second detection plate (23) is slidably connected to the detection platform (2), a first detection plate (124) is provided above the detection platform (2), and the top of the first detection plate (124) is fixedly connected to the first hydraulic cylinder (123); The top of the hydraulic cylinder (123) is connected to a guide block (122) via bolts, one side of the guide block (122) is slidably connected to a support cross bar (1), the bottom of the support cross bar (1) is rotatably connected to a threaded rod (121), the threaded rod (121) is connected to an L-shaped member (12) via threads, and one side of the L-shaped member (12) is fixedly connected to the bottom of the guide block (122); The bottom of the support cross bar (1) is fixedly connected to a hydraulic push rod 1 (11) and a hydraulic push rod 2 (13), and the bottoms of the hydraulic push rod 1 (11) and the hydraulic push rod 2 (13) are fixedly connected to the support frame (21); The top of the limiting plate (25) is connected to the auxiliary plate (22) by bolts, the top of the auxiliary plate (22) is plugged with a second visual detection component (223), one side of the second visual detection component (223) is provided with a first visual detection component (222), one end of the first visual detection component (222) is rotatably connected to a support platform (221), and one side of the support platform (221) is plugged with the auxiliary plate (22).

2. The carbon fiber bicycle frame strength detection device according to claim 1, characterized in that: One side of the driving disk (522) is fixedly connected to the output shaft of the servo motor (51), one side of the servo motor (51) is fixedly connected to the support frame (21), and the support frame (21) is rotationally connected to the adjustment turntable (521).

3. The carbon fiber bicycle frame strength detection device according to claim 2, characterized in that: A placement block (243) is fixedly connected to one side of the placement rack (24), an arc-shaped groove is provided on one side of the placement block (243), and a pneumatic finger (242) is provided on one side of the placement block (243).

4. The carbon fiber bicycle frame strength detection device according to claim 3, characterized in that: The pneumatic finger (242) is engaged with the placement rack (24), one end of the pneumatic finger (242) is connected to a clamping plate (241) via a bolt, one side of the clamping plate (241) is engaged with a pressure sensor, and the clamping plate (241) and the placement rack (24) are slidably connected.

5. The carbon fiber bicycle frame strength detection device according to claim 4, characterized in that: A guide groove is provided on the top of the detection table (2), a cleaning plate (41) is slidably connected in the guide groove, an electric push rod (4) is fixedly connected to one side of the cleaning plate (41), one end of the electric push rod (4) is fixedly connected to a mounting plate, and the bottom of the mounting plate is plugged into the collection basket (3).

6. The carbon fiber bicycle frame strength detection device according to claim 5, characterized in that: The bottom of the detection platform (2) is connected to a collecting basket (3) via bolts, and a discharge port is provided on one side of the collecting basket (3).

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