Strength detection device for carbon fiber bicycle frame

Abstract

The invention discloses a strength detection device for a carbon fiber bicycle frame, and relates to the technical field of strength detection, the strength detection device comprises a detection table, and the top of the detection table is fixedly connected with a support frame. In the invention, when the adjusting turntable rotates, the auxiliary disc and the extension block synchronously rotate, the guide rod slides along the extension block, the limiting plate can realize the limiting assistance of the frame, and after the placing frame rotates, the detection plate II reaches the appointed position above the detection table, so that the quick positioning of the frame angle is realized, and the accuracy of angle positioning is ensured; the frame is detected in the horizontal direction and the vertical direction through the second detection plate and the first detection plate respectively, stress deformation data of different positions of the frame in different directions can be obtained respectively, multiple sets of data are integrated, the overall strength of the frame can be evaluated comprehensively, and the detection accuracy is improved. The first visual detection assembly and the second visual detection assembly can collect image information around the vehicle frame detection position, whether the surface of the vehicle frame and a welding seam deform or not can be rapidly recognized, and then the strength detection accuracy is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of strength detection, and particularly 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, which has many unique advantages such as light weight, high strength, and good shock absorption.

[0003] For example, Chinese Patent CN218382136U discloses a strength detection device for a carbon fiber bicycle frame, including a bottom plate. Support feet are fixedly installed at the bottom end of the bottom plate. A rear side of the top end of the bottom plate is fixedly installed with an L-shaped support frame. A servo motor one is fixedly installed at the rear side of the top of the L-shaped support frame. A ball screw one is fixedly sleeved on the output shaft of the servo motor one. An auxiliary rod one is fixedly installed at the top of the L-shaped support frame. A horizontal moving seat is engaged with the surface of the ball screw one. A cylinder one is fixedly installed at the bottom end of the horizontal moving seat. The output shaft of the cylinder one is fixedly connected with a clamping bin. A servo motor two is fixedly installed at the front end of the clamping bin. A ball screw two is fixedly sleeved on the output shaft of the servo motor two.

[0004] In the above patent, although the problems of long placement and fixation time and low detection efficiency are solved through the clamping rod and the pneumatic cylinder, when adjusting the fixed angle of the frame by manually screwing out the insertion rod and replacing the threaded hole to achieve strength detection at different angles, this process requires interrupting the detection process and relying on manual operation. Manual adjustment is likely to cause inaccurate angle positioning and affect the consistency of the detection results. Summary of the Invention

[0005] The purpose of the present invention is to provide a strength detection device for a carbon fiber bicycle frame, so as to solve the problem proposed in the above background art that when adjusting the fixed angle of the frame by manually screwing out the insertion rod and replacing the threaded hole to achieve strength detection at different angles, this process requires interrupting the detection process and relying on manual operation. Manual adjustment is likely to cause inaccurate angle positioning and affect the consistency of the detection results.

[0006] To achieve the above-mentioned purpose, 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 arranged on one side of the support frame, the auxiliary component comprising an adjusting turntable, a driving disk and an auxiliary disk, a synchronous belt 1 is connected between the adjusting turntable and the driving disk, a synchronous belt 2 is connected between the adjusting turntable and the auxiliary disk, an extension rod is fixedly connected to one side of the auxiliary disk, an extension strip is overlapped on the outer ring surface of the extension rod, a guide rod is fixedly connected to one side of the extension strip, a connecting block is fixedly connected to one end of the guide rod, a limiting plate is fixedly connected to the bottom of the connecting block, one side of the limiting plate is plugged with the testing platform, a supporting plate is fixedly connected to the top of the testing platform, one side of the supporting plate is rotatably connected to the auxiliary disk, an extension block is fixedly connected to one side of the support plate, the extension block is penetrated by the guide rod, and the guide rod and the extension block are slidably connected; The shaft of the adjusting turntable is fixedly connected with a placing frame, one side of the placing frame is fixedly connected with a reinforcement plate, one side of the reinforcement plate is fixedly connected with a hydraulic cylinder 2, one end of the hydraulic cylinder 2 is fixedly connected with a detection plate 2, one side of the detection plate 2 is slidably connected to the detection platform, a detection plate 1 is arranged above the detection platform, and the top of the detection plate 1 is fixedly connected with a hydraulic cylinder 1.

[0007] Preferably, one side of the driving disk 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.

[0008] 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.

[0009] Preferably, the bottom of the supporting cross bar is fixedly connected with a hydraulic push rod 1 and a hydraulic push rod 2 respectively, and the bottoms of the hydraulic push rod 1 and the hydraulic push rod 2 are fixedly connected to the supporting frame.

[0010] Preferably, an auxiliary plate is connected to the top of the limiting plate by bolts, a visual detection component 2 is plugged into the top of the auxiliary plate, a visual detection component 1 is arranged on one side of the visual detection component 2, one end of the visual detection component 1 is rotatably connected to a support platform, and one side of the support platform is plugged into the auxiliary plate.

[0011] Preferably, a placement block is fixedly connected to one side of the placement rack, an arc groove is opened on one side of the placement block, and a pneumatic finger is arranged on one side of the placement block.

[0012] Preferably, the pneumatic finger is embedded in the placement rack, one end of the pneumatic finger is connected to a clamping plate by a bolt, one side of the clamping plate is embedded with a pressure sensor, and the clamping plate and the placement rack are slidably connected.

[0013] Preferably, a guiding groove is formed at the top of the inspection table, a cleaning plate is slidably connected in the guiding groove, an electric push rod is fixedly connected to one side of the cleaning plate, an installation plate is fixedly connected to one end of the electric push rod, and the bottom of the installation plate is inserted into the collection basket.

[0014] Preferably, a collection basket is connected to the bottom of the inspection table by bolts, and a discharge port is formed on one side of the collection basket.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: In the present invention, the adjusting turntable is fixedly connected to the placement rack, the connecting blocks are respectively fixedly connected to the guiding rod and the limiting plate. When the adjusting turntable rotates, the auxiliary plate and the extension block rotate synchronously, the guiding rod slides along the extension block, and the limiting plate can realize the limiting assistance for the vehicle frame. After the placement rack rotates, the second detection plate reaches the designated position above the inspection table, realizing the rapid positioning of the angle of the vehicle frame and ensuring the accuracy of the angle positioning. By respectively detecting the vehicle frame in the horizontal and vertical directions through the second detection plate and the first detection plate, the force deformation data of different positions of the vehicle frame in different directions can be obtained respectively. By synthesizing multiple groups of data, it is convenient to comprehensively evaluate the overall strength of the vehicle frame.

[0016] 2. In the present invention, the pneumatic finger is fixedly connected to the clamping plate, and one side of the auxiliary plate is fixedly connected to the placement rack. The vehicle frame is engaged with the placement block, the pneumatic finger drives the clamping plate to move, and the distance between the two clamping plates is adjusted. The vehicle frame is clamped by the clamping plates, which can reduce the shaking of the vehicle frame during rotation and ensure the stability of the vehicle frame. After the vehicle frame is adjusted, the first vision detection component and the second vision detection component reach the designated positions. Through the first vision detection component and the second vision detection component, the image information around the detection position of the vehicle frame can be collected, which is convenient for quickly identifying whether the surface of the vehicle frame and the welds are deformed, thereby ensuring the accuracy of the strength detection. Description of the Drawings

[0017] Figure 1 is a three-dimensional structural schematic diagram of a strength detection device for a carbon fiber bicycle frame according to the present invention; Figure 2 is a structural installation schematic diagram of the first hydraulic push rod of a strength detection device for a carbon fiber bicycle frame according to the present invention; Figure 3 is a structural installation schematic diagram of the threaded rod of a strength detection device for a carbon fiber bicycle frame according to the present invention; Figure 4 is a structural installation schematic diagram of the placement block of a strength detection device for a carbon fiber bicycle frame according to the present invention; Figure 5 is a structural installation schematic diagram of the second hydraulic cylinder of a strength detection device for a carbon fiber bicycle frame according to the present invention; Figure 6 is a structural installation schematic diagram of the auxiliary component of a strength detection device for a carbon fiber bicycle frame according to the present invention; Figure 7 Schematic installation diagram of the first synchronous belt of the strength detection device for a carbon fiber bicycle frame according to the present invention; Figure 8 Schematic installation diagram of the connecting block structure of the strength detection device for a carbon fiber bicycle frame according to the present invention; Figure 9 Schematic installation diagram of the extension rod structure of the strength detection device for a carbon fiber bicycle frame according to the present invention.

[0018] In the figure: 1. Support crossbar; 11. First hydraulic push rod; 12. L-shaped part; 121. Threaded rod; 122. Guide block; 123. First hydraulic cylinder; 124. First detection plate; 13. Second hydraulic push rod; 2. Detection table; 21. Support frame; 22. Auxiliary plate; 221. Support table; 222. First visual detection component; 223. Second visual detection component; 23. Second detection plate; 231. Second hydraulic cylinder; 232. Reinforcement plate; 24. Placing rack; 241. Clamping plate; 242. Pneumatic finger; 243. Placing block; 25. Limiting plate; 3. Collection basket; 4. Electric push rod; 41. Cleaning plate; 5. Auxiliary component; 51. Servo motor; 52. First synchronous belt; 521. Adjusting turntable; 522. Driving disc; 53. Auxiliary disc; 531. Guide rod; 532. Connecting block; 533. Support plate; 534. Extension strip; 535. Extension block; 536. Extension rod; 54. Second synchronous belt. Detailed implementation manners

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention. Embodiment

[0020] A strength detection device for a carbon fiber bicycle frame realizes the full-process automation of multi-angle strength detection of the frame through the combination of mechanical transmission, automatic control and visual detection technologies.

[0021] I. Working principle Installation and fixation of the frame Positioning and clamping: Place the frame on the placing block 243 of the placing rack 24, use the arc groove to fit and position with the frame contour, externally connect the control system to drive the pneumatic finger 242, drive the clamping plate 241 to move, and monitor the clamping force in real time through the pressure sensor to realize the adaptive clamping of the frame, ensure the fixing stability, and reduce the damage to the frame during clamping.

[0022] Auxiliary limit: The limit plate 25 is connected to the auxiliary plate 22 by bolts. When the angle of the placement rack 24 is adjusted, the limit plate 25 moves synchronously with the auxiliary component and finally plugs into the inspection table 2 to form a physical limit to prevent the vehicle frame from shaking.

[0023] Automatic adjustment of inspection angle Power transmission: The servo motor 51 drives the driving disk 522 to rotate, drives the adjusting turntable 521 to rotate through the first synchronous belt 52. The adjusting turntable 521 is fixedly connected to the placement rack 24 to realize the flipping of the vehicle frame. At the same time, the adjusting turntable 521 drives the auxiliary disk 53 to rotate synchronously through the second synchronous belt 54 to ensure the angle consistency.

[0024] Guided limit linkage: When the auxiliary disk 53 rotates, the extension rod 536 pushes the extension strip 534 to move radially, driving the guide rod 531 and the connecting block 532 to slide. Under the guiding action of the extension block 535, the limit plate 25 accurately moves to the target position and plugs into the inspection table 2 to complete the automatic positioning of the vehicle frame angle (such as horizontal → vertical switching).

[0025] Multi-directional strength detection Horizontal direction detection: The second hydraulic cylinder 231 is fixed to the placement rack through the reinforcement plate 232, drives the second inspection plate 23 to move horizontally along the inspection table 2, applies a lateral pressure to the vehicle frame, and simulates the lateral load during riding.

[0026] Vertical direction detection: The first hydraulic cylinder 123 drives the first inspection plate 124 to move vertically downward, applying a vertical pressure to the vehicle frame. By adjusting the position of the guide block 122 through the threaded rod 121, the contact point of the first inspection plate 124 can be changed to realize the detection of different parts of the vehicle frame such as the top and bottom of the vehicle frame.

[0027] Load control: The hydraulic cylinder is internally provided with a pressure sensor to feed back the load data in real time to ensure that the detection force meets the standard.

[0028] Visual auxiliary detection and data analysis Image acquisition: The first visual detection component 222 (such as an industrial camera) adjusts the angle through the support table 221, and the second visual detection component 223 is fixed to the auxiliary plate 22 to take pictures of the vehicle frame surface and welds before and after the detection, and collect image information such as deformation and cracks.

[0029] Defect identification: The external control terminal analyzes images through deep learning algorithms (such as convolutional neural networks), compares them with the standard sample library, automatically identifies damages on the frame surface or internal defects, and generates a comprehensive strength report in combination with pressure data.

[0030] Cleaning after detection Mechanical cleaning: The electric push rod 4 drives the cleaning plate 41 to slide along the guiding groove of the detection table 2, sweeping the carbon fiber debris into the collection basket 3.

[0031] Dust collection: The discharge port at the bottom of the collection basket 3 can be externally connected to a vacuum dust collection system to further clean fine dust and keep the detection environment clean.

[0032] II. Summary of core principles Automated angle adjustment technology Through synchronous belt drive + mechanical linkage mechanism, replacing the traditional manual hole-changing operation, realizing the rapid switching of the detection angle of the frame, reducing the positioning error, and significantly improving the detection efficiency and consistency.

[0033] Multi-dimensional load simulation Bidirectional loading: Independent loading in the horizontal and vertical directions, covering the main force-bearing scenarios of the frame (such as vertical load during riding, lateral load during turning).

[0034] Adjustable detection points: Manually / electrically adjust the position of the detection plate through the threaded rod 121 to adapt to the detection requirements of different parts of the frame (such as the seat tube, down tube).

[0035] Visual and mechanical data fusion Non-contact detection: The industrial camera captures the deformation of the frame surface in real time, making up for the deficiency that traditional mechanical detection cannot visually identify fine cracks.

[0036] Intelligent analysis: Combining image recognition algorithms with pressure data to achieve automatic marking of defects and evaluation of strength levels, reducing manual interpretation errors.

[0037] Modular design and convenient maintenance Component independence: The clamping, transmission, detection, and cleaning modules can be quickly disassembled and assembled, facilitating equipment maintenance and upgrading.

[0038] Compatibility and expandability: By replacing the radian of the placement block 243 and adjusting the distance between the clamping plates 241, it can adapt to different types of frames such as road bikes and mountain bikes, improving the versatility of the equipment.

[0039] III. Technical advantages and application value Efficiency improvement: The automation of the detection process reduces manual intervention, and the single detection time is shorter than the traditional method.

[0040] Accuracy guarantee: Synchronous belt drive + angle encoder ensures accurate angle positioning, and visual inspection can detect the lowest recognizable crack level.

[0041] Cost optimization: Modular design reduces custom development costs and is suitable for small and medium-sized frame manufacturers and third-party testing agencies.

[0042] Through technological integration and innovation, the device solves the problems of cumbersome manual operation and single detection dimension of existing testing equipment, and provides an efficient and reliable solution for the quality control of carbon fiber bicycle frames.

[0043] Example 2: Reference Figures 1-9 As shown: a strength testing device for a carbon fiber bicycle frame, comprising a testing platform 2, a support frame 21 is fixedly connected to the top of the testing platform 2, an auxiliary component 5 is arranged on one side of the support frame 21, the auxiliary component 5 comprises 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 strip 534 is fixedly connected to one side of the extension strip 534 Rod 531, one end of the guide rod 531 is fixedly connected with a connecting block 532, the bottom of the connecting block 532 is fixedly connected with a 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 with a placement rack 24, one side of the placement rack 24 is fixedly connected with a reinforcement plate 232, one side of the reinforcement plate 232 is fixedly connected with a hydraulic cylinder 231, one end of the hydraulic cylinder 231 is fixedly connected with a detection plate 23, one side of the detection plate 23 is slidably connected with the detection platform 2, a detection plate 124 is arranged above the detection platform 2, and the top of the detection plate 124 is fixedly connected with a hydraulic cylinder 123.

[0044] A support plate 533 is fixedly connected to the top of the testing table 2, and one side of the support plate 533 is rotatably connected to the auxiliary disk 53. An extension block 535 is fixedly connected to one side of the support plate 533. 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.

[0045] In this embodiment, the servo motor 51 can provide power for the rotation of the driving disk 522. The transmission between the driving disk 522 and the adjusting turntable 521 can be realized through the first synchronous belt 52. When the adjusting turntable 521 rotates, it can drive the placement rack 24 to turn over, so as to realize the adjustment of the detection angle of the vehicle frame. When the placement rack 24 turns over, the two side support frames 21 can support the placement rack 24, so as to ensure the stability of the placement rack 24 during rotation. The vehicle frame can be switched from the horizontal state to the vertical state above the detection table 2. The transmission between the adjusting turntable 521 and the auxiliary disk 53 can be realized through the second synchronous belt 54, ensuring the synchronous rotation of the adjusting turntable 521 and the auxiliary disk 53. One end of the extension rod 536 is clamped in the cavity of the extension bar 534. When the extension rod 536 rotates synchronously with the auxiliary disk 53, it can apply a force to the extension bar 534, so as to drive the extension bar 534 to move. When the extension bar 534 and the guide rod 531 move, the extension block 535 can guide the movement of the guide rod 531, so as to drive the connection block 532 and the limit plate 25 to move synchronously with the guide rod 531, and adjust the distance between the limit plate 25 and the detection table 2. Thus, when the placement rack 24 turns over to the vertical state, one side of the limit plate 25 can be inserted into the detection table 2, and one side of the limit plate 25 is engaged with the vehicle frame, realizing the limitation of the vehicle frame and reducing the shaking of the vehicle frame during detection; The stable installation of the second hydraulic cylinder 231 on one side of the placement rack 24 can be realized through the reinforcement plate 232. By using the second hydraulic cylinder 231 to drive the second detection plate 23 to move, the second detection plate 23 can be used to perform a pressure test on the vehicle frame. The use position of the guide block 122 on one side of the support cross bar 1 can be adjusted through the threaded rod 121, so as to change the contact position between the first detection plate 124 and the vehicle frame after it moves down, so as to perform a pressure test on different positions of the vehicle frame. The connection between the guide block 122 and the first detection plate 124 can be realized through the first hydraulic cylinder 123. By using the first hydraulic cylinder 123 to drive the first detection plate 124 to move down, a pressure test on the vehicle frame in the vertical direction can be performed. The first detection plate 124 and the second detection plate 23 can respectively perform pressure tests on the vehicle frame in the vertical and horizontal directions. By combining the detection results in the two directions, the strength parameters of the vehicle frame can be obtained; First, perform horizontal detection, and then switch to the vertical direction to avoid deformation accumulation caused by the frame being stressed multiple times. Before each detection, the visual detection component one 222 and the visual detection component two 223 automatically scan the detection area to establish an initial image benchmark. By adjusting the position of the first detection plate 124 through the threaded rod 121, vertical loading tests can be carried out on key parts such as the frame's seat tube, down tube, and head tube respectively. Through the rigid connection between the reinforcement plate 232 and the second hydraulic cylinder 231, the fine adjustment of the threaded rod 121, and the coordinated control of the bi-directional load, this device realizes the full-dimensional quantitative detection of the strength of the carbon fiber frame. Among them, the load is dispersed through the reinforcement plate 232, and the reinforcement plate 232 can disperse the reaction force of the second hydraulic cylinder 231 to the overall frame of the placement rack, avoiding deformation caused by local stress concentration. The guidance of the detection table 2 can ensure the detection accuracy and facilitate the accurate acquisition of the frame deformation data. During the detection, the main stress directions of the frame can be covered, and the defect recognition rate can be improved through data fusion technology, thus ensuring the accuracy of the detection.

[0046] Embodiment 3: According to Figures 1-4 As shown, the top of the limit plate 25 is connected with an auxiliary plate 22 through bolts. The top of the auxiliary plate 22 is inserted with a visual detection component two 223. One side of the visual detection component two 223 is provided with a visual detection component one 222. One end of the visual detection component one 222 is rotatably connected with a support table 221. One side of the support table 221 is inserted into the auxiliary plate 22. One side of the placement rack 24 is fixedly connected with a placement block 243. An arc-shaped groove is opened on one side of the placement block 243. One side of the placement block 243 is provided with a pneumatic finger 242. The pneumatic finger 242 is fitted with the placement rack 24. One end of the pneumatic finger 242 is connected with a clamping plate 241 through bolts. A pressure sensor is fitted on one side of the clamping plate 241. The clamping plate 241 is slidably connected with the placement rack 24. A guide groove is opened on the top of the detection table 2. A cleaning plate 41 is slidably connected in the guide groove. One side of the cleaning plate 41 is fixedly connected with an electric push rod 4. One end of the electric push rod 4 is fixedly connected with a mounting plate. The bottom of the mounting plate is inserted into the collection basket 3. The bottom of the detection table 2 is connected with the collection basket 3 through bolts. A discharge port is opened on one side of the collection basket 3.

[0047] In this example, the limiting plate 25 is used to support the bottom of the auxiliary plate 22, facilitating the synchronous movement of the limiting plate 25 and the auxiliary plate 22. Thus, when the vehicle frame is flipped, the usage positions of the auxiliary plate 22 and the limiting plate 25 can be adjusted. The limiting plate 25 can limit and assist the vehicle frame. By inserting one side of the limiting plate 25 into the inspection table 2, the usage position of the auxiliary plate 22 can be defined. Images of the vehicle frame are collected through the first vision detection component 222 and the second vision detection component 223, thereby assisting in the judgment of the post-weld situation in subsequent inspections. The placement block 243 can assist in the placement of the vehicle frame on the top of the placement rack 24. The pneumatic finger 242 can adjust the distance between the two clamping plates 241, and thus the clamping plate 241 is used to clamp one end of the vehicle frame, improving the installation stability of the vehicle frame on the placement rack 24. The pneumatic circuit system of the pneumatic finger 242 is equipped with a proportional pressure valve, which can automatically adjust the clamping force according to the pipe diameter of the vehicle frame. The clamping plate 241 is embedded with a thin-film pressure sensor to real-time feedback the clamping force data. When the force difference between the two clamping plates 241 > 5N, the system automatically adjusts the air pressure of the air claw to ensure uniform force on the vehicle frame. The cleaning plate 41 can be driven to move above the inspection table 2 by the electric push rod 4. The front end of the cleaning plate 41 is a soft rubber scraping strip, which is used to clean larger particles, and thus can clean the debris falling above the inspection table 2, enabling the debris to enter the collection basket 3 for collection.

[0048] Process and working principle of this device: First, the carbon fiber bicycle frame to be detected is engaged with the placement block 243, and the external control is used to drive the pneumatic finger 242 to work. The contact surface of the clamping plate 241 is covered with a protective pad to increase the friction force and avoid scratching the surface coating of the frame. The two clamping plates 241 clamp the frame. At the same time of clamping, the pressure sensor built in the clamping plate 241 is used to detect the clamping force on the frame, and the detected data is transmitted to the external control terminal to avoid damage to the frame caused by excessive clamping force of the clamping plate 241 on the frame. When the clamping force exceeds the predetermined value, the clamping force is adjusted to achieve the stable installation of the frame on the top of the placement rack 24. Before detection, 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 sends a signal to the visual detection component 1 222 to trigger the high-speed camera to continuously capture images, and the surface strain distribution of the frame is calculated by the digital image correlation method (DIC). Select the detection direction of the frame. When the frame is horizontally detected, there is no need to rotate the placement rack 24. First, perform the vertical direction detection, and then switch to the horizontal direction to avoid the positioning deviation during the vertical detection caused by the frame being first subjected to the horizontal force and reduce the creep effect. The hydraulic cylinder 123 is used to drive the detection plate 1 124 to move downwards so that the detection plate 1 124 performs a pressure test on the frame. After the test, the hydraulic cylinder 2 231 is used to drive the detection plate 2 23 to move towards the frame side to pressurize the frame, and observe the deformation of the contact positions of the frame with the detection plate 1 124 and the detection plate 2 23 respectively. The image information of the detection position is collected by the visual detection component 1 222 and the visual detection component 2 223, and the image is recognized and judged by the external control terminal. 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 2 223 is fixed on 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; When the vehicle frame is vertically detected, the driving disk 522 is driven to rotate by the servo motor 51. Driven by the first synchronous belt 52, the turntable 521 rotates. Through the second synchronous belt 54, the turntable 521 and the auxiliary disk 53 rotate synchronously. When the turntable 521 rotates, it can drive the placement rack 24 and the vehicle frame to rotate synchronously. The vehicle frame and the placement rack 24 tilt to change the detection direction of the vehicle frame 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, applying a force to the extension bar 534, so that the extension bar 534 drives the guide rod 531 to slide 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 limiting plate 25 to move towards the side close to the detection table 2. While the limiting plate 25 moves, the auxiliary plate 22 moves synchronously with the limiting plate 25 until one side of the limiting plate 25 is inserted into the vehicle frame, realizing the limiting and fixing of the vehicle frame. The auxiliary plate 22, the first visual detection component 222, and the second visual detection component 223 reach the specified detection positions, and the first visual detection component 222 can be adjusted to calibrate its position to ensure the scanning range of the first visual detection component 222; The first detection plate 124 is driven to move downward by the first hydraulic cylinder 123, so that after the first detection plate 124 contacts the vehicle frame, it continues to apply pressure to the vehicle frame to perform a strength detection on the vehicle frame in the vertical direction. After the detection, the second detection plate 23 is driven to slide along the top of the detection table 2 by the second hydraulic cylinder 231. By applying a force to the vehicle frame with the second detection plate 23, the strength detection of the vehicle frame in the horizontal direction can be realized. After the detection, the first visual detection component 222 and the second visual detection component 223 collect the image information around the detection position of the vehicle frame. The external control terminal determines whether there is damage to the vehicle frame according to the recognition result of the image, so as to obtain the strength of the current vehicle frame. After the detection, the electric push rod 4 is used to drive the cleaning plate 41 to slide on the top of the detection table 2, sweeping the debris falling on the top of the detection table 2 into the collection basket 3. After the cleaning is completed, the cleaning plate 41 moves in the reverse direction to drive the turntable 521 to automatically return to the initial position. The first detection plate 124 and the second detection plate 23 return to the initial points, and the pneumatic finger 242 releases, so that the detected vehicle frame can be taken out from the placement rack 24 and a new vehicle frame to be detected can be put in.

[0049] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An intensity detection device for a carbon fiber bicycle frame, comprising a detection table (2), characterized in that: A support frame (21) is fixedly connected to the top of the detection table (2). An auxiliary component (5) is arranged on one side of the support frame (21). The auxiliary component (5) includes an adjustment turntable (521), a driving disk (522), and an auxiliary disk (53). A first synchronous belt (52) is in transmission connection between the adjustment turntable (521) and the driving disk (522). A second synchronous belt (54) is in transmission connection between the adjustment 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 lapped on the outer ring surface of the extension rod (536). A guide rod (531) is fixedly connected to one side of the extension strip (534). A connection 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 connection block (532). One side of the limiting plate (25) is inserted into the detection table (2). A support plate (533) is fixedly connected to the top of the detection table (2). One side of the support plate (533) is rotatably connected to the auxiliary disk (53). An extension block (535) is fixedly connected to one side of the support plate (533). The guide rod (531) passes through the extension block (535), and the guide rod (531) is slidably connected to the extension block (535). A placement rack (24) is fixedly connected to the shaft part of the adjustment turntable (521). A reinforcement plate (232) is fixedly connected to one side of the placement rack (24). A second hydraulic cylinder (231) is fixedly connected to one side of the reinforcement plate (232). A second detection plate (23) is fixedly connected to one end of the second hydraulic cylinder (231). One side of the second detection plate (23) is slidably connected to the detection table (2). A first detection plate (124) is arranged above the detection table (2). A first hydraulic cylinder (123) is fixedly connected to the top of the first detection plate (124).

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

3. The strength detection device for the carbon fiber bicycle frame according to claim 1, characterized in that: A guide block (122) is connected to the top of the first hydraulic cylinder (123) by bolts. A support cross bar (1) is slidably connected to one side of the guide block (122). A threaded rod (121) is rotatably connected to the bottom of the support cross bar (1). The threaded rod (121) is threadedly connected to an L-shaped part (12). One side of the L-shaped part (12) is fixedly connected to the bottom of the guide block (122).

4. The strength detection device for a carbon fiber bicycle frame according to claim 3, wherein: A first hydraulic push rod (11) and a second hydraulic push rod (13) are respectively fixedly connected to the bottom of the support cross bar (1). The bottoms of the first hydraulic push rod (11) and the second hydraulic push rod (13) are both fixedly connected to the support frame (21).

5. The strength detection device for a carbon fiber bicycle frame according to claim 1, characterized in that: An auxiliary plate (22) is connected to the top of the limiting plate (25) by bolts. A second vision detection component (223) is inserted into the top of the auxiliary plate (22). A first vision detection component (222) is arranged on one side of the second vision detection component (223). A support table (221) is rotatably connected to one end of the first vision detection component (222). One side of the support table (221) is inserted into the auxiliary plate (22).

6. The strength detection device for a carbon fiber bicycle frame according to claim 1, wherein: One side of the placement rack (24) is fixedly connected with a placement block (243). An arc-shaped groove is formed on one side of the placement block (243), and a pneumatic finger (242) is arranged on one side of the placement block (243).

7. The strength detection device for a carbon fiber bicycle frame according to claim 6, characterized in that: The pneumatic finger (242) is fitted with the placement rack (24). One end of the pneumatic finger (242) is bolted with a clamping plate (241). A pressure sensor is fitted on one side of the clamping plate (241), and the clamping plate (241) is slidably connected with the placement rack (24).

8. The strength detection device for a carbon fiber bicycle frame according to claim 1, characterized in that: A guide groove is formed on the top of the detection table (2). A cleaning plate (41) is slidably connected in the guide groove. One side of the cleaning plate (41) is fixedly connected with an electric push rod (4). One end of the electric push rod (4) is fixedly connected with a mounting plate, and the bottom of the mounting plate is inserted into the collection basket (3).

9. The strength detection device for a carbon fiber bicycle frame according to claim 8, wherein: The bottom of the detection table (2) is bolted with a collection basket (3), and a discharge port is formed on one side of the collection basket (3).

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