Intelligent rigid strength sensing detection device of surfboard and detection method thereof

Abstract

The application relates to the technical field of sensor detection, in particular to an intelligent rigid strength sensor detection device for a surfboard and a detection method thereof, which comprises a detection table, a tooling table and a sliding frame, the tooling table is horizontally movably arranged on the detection table through a horizontal moving mechanism, the sliding frame is vertically movably arranged on the detection table through a vertical moving mechanism, a pressure sensor is arranged on the sliding frame, a compression roller is arranged at a detection end of the pressure sensor, a driving mechanism is arranged on the detection table, and the driving mechanism is in transmission connection with the horizontal moving mechanism and the vertical moving mechanism. Through the mutual cooperation among the driving mechanism, the horizontal moving mechanism and the vertical moving mechanism, the horizontal moving mechanism drives the tooling table to horizontally and reciprocally move and keep a preset stationary time at the end of the stroke, and the vertical moving mechanism applies pressure in a stepped increasing mode during the stationary period, so that continuous multi-point detection in the full-length range of the surfboard is realized, and the comprehensiveness of detection is improved.

Description

Technical Field

[0001] This invention relates to the field of sensor detection technology, specifically to an intelligent rigidity and strength sensing detection device and method for surfboards. Background Technology

[0002] As a core piece of equipment for water sports, the structural performance of surfboards directly affects the user's safety and experience. Over long-term use, surfboards are subjected to a combination of factors, including wave impact, UV radiation, temperature changes, and mechanical collisions, leading to progressive damage such as delamination between internal fiber layers and resin aging and cracking. This damage often originates from within the material and gradually expands, making it difficult to detect through visual inspection. However, it directly reduces the board's rigidity and strength, potentially leading to structural failure.

[0003] Current surfboard performance testing methods primarily rely on static single-point testing or destructive sampling inspection. Static single-point testing applies a constant load at a fixed location, failing to reflect the stiffness distribution characteristics of the board along its entire length and having limited ability to identify localized weak points. While destructive testing can obtain material cross-sectional information, it results in the scrapping of the tested product, making it unsuitable for finished product inspection or periodic safety assessments. Furthermore, some testing devices fail to effectively isolate mechanical vibration interference during pressure application, leading to motion noise mixed in the sensor signals and affecting the accuracy of rigidity strength quantitative assessments.

[0004] With the advancement of composite material molding technology and the diversification of surfboard structures, the industry has put forward new technical requirements for testing equipment: on the one hand, it is necessary to achieve non-destructive full-length continuous testing in order to fully understand the performance distribution of the board; on the other hand, it is necessary to dynamically adjust the applied load during the testing process to ensure effective excitation of products of various materials while avoiding excessive pressure that could cause surface damage. Summary of the Invention

[0005] The purpose of this invention is to provide an intelligent rigidity strength sensing and detection device and method for surfboards, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: An intelligent rigidity strength sensing and testing device for surfboards includes a testing table, a tooling platform, and a slide. The tooling platform is used to support and fix the surfboard and can be horizontally moved on the testing table via a translation mechanism. The carriage is vertically and flexibly mounted on the testing table via a vertical movement mechanism, and is located above the tooling table; It also includes a pressure sensor and a pressure roller. The pressure sensor is mounted on the carriage, and the pressure roller is located at the detection end of the pressure sensor. The pressure roller abuts against the top surface of the surfboard on the tooling table and maintains a preset contact pressure. The testing table is equipped with a drive mechanism, which is connected to the translation mechanism and the vertical movement mechanism respectively. When the drive mechanism is running, the translation mechanism will drive the tooling table and surfboard to move horizontally back and forth, and maintain a preset static time at the end of the stroke. During the time when the tooling table is static, the vertical movement mechanism will drive the pressure sensor and pressure roller to move down a preset distance through the slide, and apply pressure to the surfboard in a step-increasing manner.

[0007] The intelligent rigidity and strength sensing and detection device for surfboards as described above: The driving mechanism includes a rotating rod, a rotating shaft, and a movable plate. The rotating rod and the rotating shaft are parallel to each other and are both horizontally rotatably mounted on the detection table. The movable plate is provided with a collar and a ring, the collar being slidably fitted on the outer wall of the rotating rod, and the ring being slidably fitted on the outer wall of the rotating shaft.

[0008] The intelligent rigidity and strength sensing and detection device for surfboards as described above: The drive mechanism also includes a turntable, a geared motor, and a connecting rod. The turntable is rotatably mounted on the testing table, and the geared motor is mounted on the testing table. The output end of the geared motor is coaxially connected to the turntable. An eccentric column is provided on the turntable, and the two ends of the connecting rod are rotatably connected to the eccentric column and the moving plate, respectively. When the reduction motor is started, the moving plate will synchronously drive the collar and the ring to reciprocate on the outer wall of the rotating rod and the rotating shaft, respectively.

[0009] The intelligent rigidity and strength sensing and detection device for surfboards as described above: The outer wall of the rotating rod is provided with a spiral groove 1, a straight groove 1, a spiral groove 2 and a straight groove 2 along its length direction, and the spiral groove 1, the straight groove 1, the spiral groove 2 and the straight groove 2 are connected end to end in sequence; The projections of the first spiral groove, the first straight groove, the second spiral groove, and the second straight groove form a parallelogram.

[0010] The intelligent rigidity and strength sensing and detection device for surfboards as described above: The outer wall of the rotating shaft is provided with shaft groove one, thread groove one, shaft groove two and thread groove two along its length direction, and shaft groove one, thread groove one, shaft groove two and thread groove two are connected end to end in sequence; The first spiral groove corresponds to the first shaft groove, the first straight groove corresponds to the first threaded groove, the second spiral groove corresponds to the second shaft groove, and the second straight groove corresponds to the second threaded groove.

[0011] The intelligent rigidity and strength sensing and detection device for surfboards as described above: The inner wall of the collar is fitted with rolling balls, and the rolling balls are also fitted into the spiral groove. The inner wall of the collar is fitted with rolling steel balls, which are also fitted into the shaft groove.

[0012] The intelligent rigidity and strength sensing and detection device for surfboards as described above: A large pulley is coaxially arranged on the outer wall of the rotating rod, and a large bevel gear is coaxially arranged on the outer wall of the rotating shaft; During one reciprocating movement of the collar, the ball will slide through the spiral groove one, the straight groove one, the spiral groove two and the straight groove two in sequence, and the rotating rod will perform forward rotation, stand still, reverse rotation and stand still in sequence. During one reciprocating movement of the collar, the steel ball will slide through the first shaft groove, the first thread groove, the second shaft groove, and the second thread groove in sequence, and the rotating shaft will perform the actions of being stationary, rotating forward, being stationary, and rotating forward in sequence.

[0013] The intelligent rigidity and strength sensing and detection device for surfboards as described above: The translation mechanism includes a slide rail and a lead screw. The slide rail is horizontally arranged on the testing table, and the tooling table is slidably engaged with the slide rail. The lead screw is horizontally rotatably arranged on the slide rail, and the lead screw is threadedly engaged with the tooling table. A small pulley is coaxially mounted on the lead screw, and the small pulley and the large pulley are connected by a toothed belt.

[0014] The intelligent rigidity and strength sensing and detection device for surfboards as described above: The vertical movement mechanism includes a bracket and a threaded rod. The bracket is vertically mounted on the testing table, the slide is slidably engaged with the bracket, and the threaded rod is vertically rotatably mounted on the bracket and threadedly engaged with the slide. A transmission shaft is vertically rotatably mounted on the testing table. One end of the transmission shaft is coaxially connected to the threaded rod, and the other end of the transmission shaft is coaxially mounted with a small bevel gear that meshes with the large bevel gear.

[0015] A method for detecting the rigidity strength of a surfboard using the aforementioned intelligent sensing and detection device, characterized by comprising the following steps: Step 1: Clamping and positioning. Fix the surfboard to be tested on the tooling table, adjust the height of the pressure roller so that it abuts against the top surface of the surfboard and maintains the preset contact pressure, start the reduction motor, so that the turntable drives the moving plate to start reciprocating motion through the connecting rod, and the drive mechanism enters the working state. Step 2: Forward detection. The collar drives the ball to slide through the spiral groove one, the rotating rod rotates forward and drives the screw to rotate forward synchronously through the toothed belt, the tooling table moves horizontally along the slide rail in the first direction, and at the same time the collar drives the steel ball to be in the shaft groove one, the rotating shaft is stationary, the threaded rod remains stationary, the slide and pressure roller maintain the current height. When the tooling table moves to the end of the stroke, the ball enters the straight groove one, the rotating rod is stationary, the tooling table remains stationary, forming the first stationary window period; Step 3: Stepped pressure application. During the first static window period, the collar drives the steel ball to slide into the first threaded groove. The shaft rotates forward and drives the threaded rod to rotate forward synchronously through the meshing of the bevel gear. The carriage drives the pressure sensor and pressure roller to move down a preset distance, applying the first level of pressure to the surfboard and collecting rigidity data. Subsequently, the collar drives the steel ball into the second shaft groove. The shaft stops, the carriage maintains its current height, and the collar drives the ball into the second spiral groove. The rotating rod reverses and drives the tooling table to move horizontally in the opposite direction. At the same time, the collar is in the second shaft groove, and the shaft and carriage remain stationary. When the tooling table moves to the end of another stroke, the ball enters the second straight groove, the rotating rod stops again, forming the second static window period. The collar drives the steel ball into the second threaded groove, the shaft rotates forward again and drives the carriage to continue to move down a preset distance, applying the second level of pressure in a stepped increasing manner and collecting data. Step 4: Cyclic testing and reset. Repeat steps 2 and 3 to make the tooling table move the surfboard horizontally back and forth multiple times. During the static window period at the end of each stroke, multi-level step pressure is applied sequentially to achieve continuous multi-point rigidity strength testing along the entire length of the surfboard. After the test is completed, the reduction motor stops running, all mechanisms are reset, the surfboard is released from its fixation and removed.

[0016] Compared with the prior art, the beneficial effects of the present invention are: Through the cooperation of the drive mechanism, translation mechanism and vertical movement mechanism, the translation mechanism drives the tooling table to move horizontally back and forth and maintains a preset static time at the end of the stroke. The vertical movement mechanism applies pressure in a step-by-step manner during the static period, realizing continuous multi-point detection of the surfboard along its entire length and improving the comprehensiveness of the detection. By utilizing the static window at the end of the stroke to perform the pressing operation, the interference of mechanical vibration generated during horizontal movement on the pressure sensor is effectively eliminated, ensuring that data acquisition is completed in a stable state. This improves the accuracy and reliability of rigidity strength testing. It not only enables the pressure roller to maintain constant pressure during the process of moving from one end of the surfboard to the other, but also increases the pressure on the surfboard during the return stroke. By employing a stepped, incremental pressure application method combined with preset contact pressure control, the detection intensity can be flexibly adjusted according to surfboards of different materials and structures. This avoids damage to the board surface caused by excessive pressure in a single instance, expands the device's adaptability to diverse products, and ensures the safety of the detection process. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of an intelligent rigidity and strength sensing and detection device for surfboards.

[0018] Figure 2 This is another schematic diagram of the overall structure of the intelligent rigidity and strength sensing and detection device for surfboards.

[0019] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0020] Figure 4 This is a schematic diagram of the drive mechanism in an intelligent rigidity and strength sensing and detection device for surfboards.

[0021] Figure 5 This is a cross-sectional view of the moving board, collar, and ring in the intelligent rigidity and strength sensing and testing device for surfboards.

[0022] Figure 6 This is a perspective view of part of the drive mechanism in the intelligent rigidity and strength sensing and detection device for surfboards.

[0023] Figure 7 A perspective view of part of the drive mechanism in the intelligent rigidity and strength sensing and detection device for surfboards, taken from the frontal view.

[0024] Figure 8 This is a cross-sectional view of the testing table in the intelligent rigidity and strength sensing testing device for surfboards.

[0025] Figure 9 for Figure 8 Enlarged view of section B in the middle.

[0026] Figure 10 This is another schematic diagram of the overall structure of the intelligent rigidity and strength sensing and detection device for surfboards.

[0027] In the diagram: 1. Testing table; 2. Tooling table; 3. Slide carriage; 4. Pressure sensor; 5. Pressure roller; 6. Rotating rod; 601. Spiral groove one; 602. Straight groove one; 603. Spiral groove two; 604. Straight groove two; 7. Rotating shaft; 701. Shaft groove one; 702. Thread groove one; 703. Shaft groove two; 704. Thread groove two; 8. Moving plate; 9. Collar; 10. Collar; 11. Turntable; 12. Gear motor; 13. Eccentric column; 14. Connecting rod; 15. Ball bearing; 16. Steel ball; 17. Large pulley; 18. Large bevel gear; 19. Slide rail; 20. Lead screw; 21. Small pulley; 22. Toothed belt; 23. Support; 24. Threaded rod; 25. Drive shaft; 26. Small bevel gear. Detailed Implementation

[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0029] Please see Figure 1-10 As an embodiment of the present invention, an intelligent rigidity strength sensing and testing device for surfboards includes a testing table 1, a tooling platform 2, and a slide 3. The tooling platform 2 is used to support and fix the surfboard, and is horizontally movable on the testing table 1 by means of a translation mechanism. The slide 3 is vertically and flexibly mounted on the testing table 1 via a vertical movement mechanism, and is located above the tooling table 2; It also includes a pressure sensor 4 and a pressure roller 5. The pressure sensor 4 is mounted on the slide 3, and the pressure roller 5 is located at the detection end of the pressure sensor 4. The pressure roller 5 abuts against the top surface of the surfboard on the tooling table 2 and maintains a preset contact pressure. The testing table 1 is equipped with a driving mechanism, which is connected to the translation mechanism and the vertical movement mechanism respectively. When the driving mechanism is running, the translation mechanism will drive the tooling table 2 and the surfboard to move horizontally back and forth, and maintain a preset static time at the end of the stroke. During the time when the tooling table 2 is in a static state, the vertical movement mechanism will drive the pressure sensor 4 and the pressure roller 5 to move down a preset distance through the slide 3, and apply pressure to the surfboard in a step-by-step manner.

[0030] In this embodiment, the drive mechanism acts as a power source, simultaneously outputting power to both the translation mechanism and the vertical movement mechanism, so that the two form a predetermined timing coordination relationship. Under the action of the drive mechanism, the translation mechanism drives the tooling table 2 and the surfboard fixed on it to reciprocate in the horizontal direction. When the tooling table 2 moves to the end of the stroke, the translation mechanism controls the tooling table 2 to maintain a preset stationary time, forming a stationary window period. Under the control of the drive mechanism, the vertical movement mechanism only performs lifting and lowering actions when the tooling table 2 is in the above-mentioned static window period. At this time, the vertical movement mechanism drives the slide 3 to move down, which drives the pressure sensor 4 and the pressure roller 5 to descend synchronously by a preset distance, applying pressure to the surfboard in a step-by-step manner. During the horizontal movement of the tooling table 2, the vertical movement mechanism remains stationary, and the pressure roller 5 maintains a preset contact pressure with the top surface of the surfboard but does not perform a pressing operation. The above timing coordination ensures that pressure data acquisition is carried out only when the tooling table 2 is stationary, avoiding the interference of mechanical vibration caused by horizontal movement on the detection accuracy of the pressure sensor 4. At the same time, continuous multi-point rigidity strength detection is achieved by applying pressure in a step-by-step manner.

[0031] As a further embodiment of the present invention, the driving mechanism includes a rotating rod 6, a rotating shaft 7, and a moving plate 8. The rotating rod 6 and the rotating shaft 7 are parallel to each other and are both horizontally rotatably mounted on the detection table 1. The movable plate 8 is provided with a collar 9 and a ring 10 respectively. The collar 9 is slidably sleeved on the outer wall of the rotating rod 6, and the ring 10 is slidably sleeved on the outer wall of the rotating shaft 7. The drive mechanism also includes a turntable 11, a reduction motor 12 and a connecting rod 14. The turntable 11 is rotatably mounted on the testing table 1, the reduction motor 12 is mounted on the testing table 1, and the output end of the reduction motor 12 is coaxially connected to the turntable 11. An eccentric column 13 is provided on the turntable 11. The two ends of the connecting rod 14 are rotatably connected to the eccentric column 13 and the moving plate 8 respectively. When the reduction motor 12 is started, the moving plate 8 will synchronously drive the collar 9 and the collar 10 to reciprocate on the outer walls of the rotating rod 6 and the rotating shaft 7 respectively.

[0032] In this embodiment, please refer to Figure 3 and Figure 4 After the geared motor 12 starts, its output end drives the turntable 11 to rotate continuously around its own axis. The eccentric column 13 is fixedly set on the turntable 11 and is offset from the center of the turntable 11, and moves in a circular motion synchronously with the turntable 11. One end of the connecting rod 14 is rotatably connected to the eccentric column 13, and the other end is rotatably connected to the moving plate 8, which converts the circular motion of the eccentric column 13 into the linear reciprocating motion of the moving plate 8. The rotating rod 6 and the rotating shaft 7 are parallel to each other and horizontally arranged on the testing table 1, which together constitute the sliding guide support of the moving plate 8. A collar 9 and a ring 10 are fixedly installed on the movable plate 8. The collar 9 is slidably sleeved on the outer wall of the rotating rod 6, and the ring 10 is slidably sleeved on the outer wall of the rotating shaft 7. When the connecting rod 14 drives the movable plate 8 to move, the collar 9 and the ring 10 slide synchronously back and forth along the outer walls of the rotating rod 6 and the rotating shaft 7 respectively, ensuring that the movable plate 8 maintains a stable linear motion trajectory in the horizontal direction.

[0033] As a further embodiment of the present invention, the outer wall of the rotating rod 6 is provided with a spiral groove 601, a straight groove 602, a spiral groove 603 and a straight groove 604 along its length direction, and the spiral groove 601, the straight groove 602, the spiral groove 603 and the straight groove 604 are connected end to end in sequence. The projections of the spiral groove 601, the straight groove 602, the spiral groove 603, and the straight groove 604 form a parallelogram. The outer wall of the rotating shaft 7 is provided with shaft groove 1 701, thread groove 1 702, shaft groove 2 703 and thread groove 2 704 along its length direction, and the shaft groove 1 701, the thread groove 1 702, the shaft groove 2 703 and the thread groove 2 704 are connected end to end in sequence; The first spiral groove 601 corresponds to the first shaft groove 701, the first straight groove 602 corresponds to the first threaded groove 702, the second spiral groove 603 corresponds to the second shaft groove 703, and the second straight groove 604 corresponds to the second threaded groove 704. The inner wall of the collar 9 is fitted with rolling balls 15, and the rolling balls 15 are also fitted with rolling balls 15 in the spiral groove 601. The inner wall of the collar 10 is fitted with a steel ball 16, which is also fitted with the shaft groove 701. A large pulley 17 is coaxially arranged on the outer wall of the rotating rod 6, and a large bevel gear 18 is coaxially arranged on the outer wall of the rotating shaft 7. During one reciprocating movement of the collar 9, the ball 15 will slide through the spiral groove 601, the straight groove 602, the spiral groove 603 and the straight groove 604 in sequence, and the rotating rod 6 will perform forward rotation, stand still, reverse rotation and stand still in sequence. During one reciprocating movement of the collar 10, the steel ball 16 will slide through the shaft groove 1 701, the thread groove 1 702, the shaft groove 2 703 and the thread groove 2 704 in sequence, and the rotating shaft 7 will perform the following actions in sequence: stationary, forward rotation, stationary and forward rotation.

[0034] In this embodiment, please refer to Figure 5 , Figure 6 and Figure 7The outer wall of the rotating rod 6 is provided with spiral groove 601, straight groove 602, spiral groove 603, and straight groove 604 in sequence along its length. The four grooves are connected end to end and their projections form a parallelogram. The ball 15, which is fitted into the inner wall of the collar 9, rolls in cooperation with both the collar 9 and spiral groove 601. When the moving plate 8 drives the collar 9 to reciprocate, the ball 15 slides along the grooves on the outer wall of the rotating rod 6 in sequence through spiral groove 601, straight groove 602, spiral groove 603, and straight groove 604. During the spiral groove 601, the helix angle of the spiral groove 601 forces the rotating rod 6 to rotate in the forward direction. After the ball 15 enters the straight groove 602, the axial guiding characteristic of the straight groove 602 keeps the rotating rod 6 stationary. When the ball 15 slides into the spiral groove 603, the reverse helix angle drives the rotating rod 6 to rotate in the reverse direction. After the ball 15 enters the straight groove 604, the rotating rod 6 remains stationary again. Thus, one complete reciprocating movement of the collar 9 corresponds to the rotating rod 6 completing four actions in sequence: forward rotation, stationary, reverse rotation, and stationary. The outer wall of the rotating shaft 7 is provided with shaft groove 1 701, thread groove 1 702, shaft groove 2 703, and thread groove 2 704 in sequence along its length. The four grooves are also connected end to end. The steel ball 16 embedded in the inner wall of the collar 10 rolls with the collar 10 and shaft groove 1 701. When the collar 10 moves synchronously with the moving plate 8, the steel ball 16 slides along the grooves on the outer wall of the rotating shaft 7 in sequence through shaft groove 1 701, thread groove 1 702, shaft groove 2 703, and thread groove 2 704. When the 6 is in the first shaft groove 701, the axial guiding characteristics of the first shaft groove 701 keep the rotating shaft 7 stationary. After the steel ball 16 enters the first thread groove 702, the thread helix angle drives the rotating shaft 7 to rotate in the forward direction. When the steel ball 16 slides into the second shaft groove 703, the rotating shaft 7 stops again. After the steel ball 16 enters the second thread groove 704, the thread helix angle drives the rotating shaft 7 to rotate in the forward direction again. Thus, one complete reciprocating movement of the collar 10 corresponds to the rotating shaft 7 completing four actions in sequence: stationary, forward rotation, stationary, and forward rotation. The rotating rod 6 and the rotating shaft 7 are motion-linked by the synchronous drive of the moving plate 8, but their channel structures are different: the rotating rod 6 uses alternating spiral and straight channels to achieve switching between forward and reverse rotation and stationary motion, while the rotating shaft 7 uses alternating shaft channels and threaded channels to achieve intermittent unidirectional rotation. The interlocking structure of the ball bearing 15 and the steel ball 16 transforms the linear reciprocating motion of the collar 9 and the collar 10 into the intermittent rotational motion of the rotating rod 6 and the rotating shaft 7. Furthermore, through the correspondence of the channel types, it is ensured that the stationary period of the rotating rod 6 and the rotational period of the rotating shaft 7 are staggered, or that the rotational period of the rotating rod 6 and the stationary period of the rotating shaft 7 are matched, thereby forming a predetermined motion timing coordination.

[0035] As a further embodiment of the present invention, the translation mechanism includes a slide rail 19 and a lead screw 20. The slide rail 19 is horizontally arranged on the testing table 1, the tooling table 2 is slidably engaged with the slide rail 19, and the lead screw 20 is horizontally rotatably arranged on the slide rail 19, and the lead screw 20 is threadedly engaged with the tooling table 2. A small pulley 21 is coaxially mounted on the lead screw 20, and the small pulley 21 and the large pulley 17 are connected by a toothed belt 22.

[0036] In this embodiment, please refer to Figure 9 and Figure 10 The slide rail 19 is horizontally fixed on the testing table 1, providing horizontal guide support for the tooling table 2. The lead screw 20 is horizontally rotatably mounted on the slide rail 19 and forms a threaded engagement with the tooling table 2. A small pulley 21 is coaxially mounted at the end of the lead screw 20. The small pulley 21 is connected to the large pulley 17 on the rotating rod through a toothed belt 22. When the drive mechanism drives the rotating rod 6 to rotate, the large pulley 17 rotates synchronously with the rotating rod 6, and transmits power to the small pulley 21 through the toothed belt 22, driving the lead screw 20 to rotate around its own axis. Since the tooling table 2 is in sliding fit with the slide rail 19 and threaded fit with the lead screw 20, the rotational motion of the lead screw 20 is converted into the linear movement of the tooling table 2 along the slide rail 19. The forward rotation of the rotating rod 6 drives the lead screw 20 to rotate forward, causing the tooling table 2 to move horizontally in the first direction. The reverse rotation of the rotating rod 6 drives the lead screw 20 to reverse, causing the tooling table 2 to move horizontally in the opposite direction. When the rotating rod 6 is stationary, the lead screw 20 is also stationary, and the tooling table 2 remains stationary. Therefore, the intermittent forward and reverse rotation of the rotating rod 6 is transmitted to the synchronous rotation of the lead screw 20 through the belt drive mechanism, thereby controlling the tooling table 2 and the surfboard to move horizontally back and forth between the two ends of the stroke, and maintaining a preset static time during the static period of the rotating rod 6, providing a stable detection window period for the downward pressing operation of the vertical movement mechanism.

[0037] As a further embodiment of the present invention, the vertical movement mechanism includes a bracket 23 and a threaded rod 24. The bracket 23 is vertically mounted on the testing table 1, the slide 3 is slidably engaged with the bracket 23, and the threaded rod 24 is vertically rotatably mounted on the bracket 23 and is threadedly engaged with the slide 3. A transmission shaft 25 is vertically rotatably mounted on the testing table 1. One end of the transmission shaft 25 is coaxially connected to the threaded rod 24, and the other end of the transmission shaft 25 is coaxially mounted with a small bevel gear 26 that meshes with the large bevel gear 18.

[0038] In this embodiment, please refer to Figure 9 and Figure 10The bracket 23 is vertically fixed on the testing table 1, providing vertical guide support for the slide 3. The threaded rod 24 is vertically rotatably mounted on the bracket 23 and forms a threaded engagement with the slide 3. The transmission shaft 25 is vertically rotatably mounted on the testing table 1, with its top end coaxially connected to the threaded rod 24 and its bottom end coaxially mounted with a small bevel gear 26. The small bevel gear 26 meshes with the large bevel gear 18 on the rotating shaft 7. When the drive mechanism drives the rotating shaft 7 to rotate, the large bevel gear 18 rotates synchronously with the rotating shaft 7, and transmits power to the small bevel gear 26 through gear meshing, driving the transmission shaft 25 and the threaded rod 24 to rotate synchronously around the vertical axis. Since the slide 3 is slidably engaged with the support 23 and threadedly engaged with the threaded rod 24, the rotational motion of the threaded rod 24 is converted into the vertical lifting motion of the slide 3 along the support 23. The forward rotation of the rotating shaft 7 drives the threaded rod 24 to rotate forward, causing the slide 3 to move the pressure sensor 4 and the pressure roller 5 vertically downward. When the rotating shaft 7 rotates forward again, the slide 3 continues to move downward by a preset distance, applying pressure to the surfboard in a step-by-step increasing manner. When the rotating shaft 7 stops, the threaded rod 24 stops as well, and the slide 3 maintains its current height position. Therefore, the intermittent forward rotation of the rotating shaft 7 is transmitted to the synchronous rotation of the threaded rod 24 through the bevel gear transmission mechanism, thereby controlling the slide 3 to perform a stepped downward pressing action during the static window period of the tooling table 2, and the static period of the rotating shaft 7 corresponds to the height holding period of the slide 3, ensuring that the pressure data acquisition is completed in a stable state.

[0039] A method for detecting the rigidity strength of a surfboard using the aforementioned intelligent sensing and detection device, characterized by comprising the following steps: Step 1: Clamping and positioning. Fix the surfboard to be tested on the tooling table, adjust the height of the pressure roller so that it abuts against the top surface of the surfboard and maintains the preset contact pressure, start the reduction motor, so that the turntable drives the moving plate to start reciprocating motion through the connecting rod, and the drive mechanism enters the working state. Step 2: Forward detection. The collar drives the ball to slide through the spiral groove one, the rotating rod rotates forward and drives the screw to rotate forward synchronously through the toothed belt, the tooling table moves horizontally along the slide rail in the first direction, and at the same time the collar drives the steel ball to be in the shaft groove one, the rotating shaft is stationary, the threaded rod remains stationary, the slide and pressure roller maintain the current height. When the tooling table moves to the end of the stroke, the ball enters the straight groove one, the rotating rod is stationary, the tooling table remains stationary, forming the first stationary window period; Step 3: Stepped pressure application. During the first static window period, the collar drives the steel ball to slide into the first threaded groove. The shaft rotates forward and drives the threaded rod to rotate forward synchronously through the meshing of the bevel gear. The carriage drives the pressure sensor and pressure roller to move down a preset distance, applying the first level of pressure to the surfboard and collecting rigidity data. Subsequently, the collar drives the steel ball into the second shaft groove. The shaft stops, the carriage maintains its current height, and the collar drives the ball into the second spiral groove. The rotating rod reverses and drives the tooling table to move horizontally in the opposite direction. At the same time, the collar is in the second shaft groove, and the shaft and carriage remain stationary. When the tooling table moves to the end of another stroke, the ball enters the second straight groove, the rotating rod stops again, forming the second static window period. The collar drives the steel ball into the second threaded groove, the shaft rotates forward again and drives the carriage to continue to move down a preset distance, applying the second level of pressure in a stepped increasing manner and collecting data. Step 4: Cyclic testing and reset. Repeat steps 2 and 3 to make the tooling table move the surfboard horizontally back and forth multiple times. During the static window period at the end of each stroke, multi-level step pressure is applied sequentially to achieve continuous multi-point rigidity strength testing along the entire length of the surfboard. After the test is completed, the reduction motor stops running, all mechanisms are reset, the surfboard is released from its fixation and removed.

[0040] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0041] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An intelligent rigidity and strength sensing and testing device for surfboards, comprising a testing table (1), a tooling table (2), and a slide (3), characterized in that, The tooling table (2) is used to support and fix the surfboard, and can be horizontally moved on the testing table (1) by means of a translation mechanism; The slide (3) is vertically and flexibly mounted on the testing table (1) via a vertical movement mechanism and is located above the tooling table (2); It also includes a pressure sensor (4) and a pressure roller (5). The pressure sensor (4) is mounted on the slide (3), and the pressure roller (5) is located at the detection end of the pressure sensor (4). The pressure roller (5) abuts against the top surface of the surfboard on the tooling table (2) and maintains a preset contact pressure. The testing table (1) is equipped with a driving mechanism, which is connected to the translation mechanism and the vertical movement mechanism respectively. When the driving mechanism is running, the translation mechanism will drive the tooling table (2) and the surfboard to move horizontally back and forth, and maintain a preset static time at the end of the stroke. During the time period when the tooling table (2) is in a static state, the vertical movement mechanism will drive the pressure sensor (4) and the pressure roller (5) to move down a preset distance through the slide (3) to apply pressure to the surfboard in a step-by-step manner.

2. The intelligent rigidity and strength sensing and detection device for a surfboard according to claim 1, characterized in that, The driving mechanism includes a rotating rod (6), a rotating shaft (7), and a moving plate (8). The rotating rod (6) and the rotating shaft (7) are parallel to each other and are both horizontally rotatably mounted on the detection table (1). The movable plate (8) is provided with a collar (9) and a ring (10). The collar (9) is slidably sleeved on the outer wall of the rotating rod (6), and the ring (10) is slidably sleeved on the outer wall of the rotating shaft (7).

3. The intelligent rigidity and strength sensing and detection device for a surfboard according to claim 2, characterized in that, The drive mechanism also includes a turntable (11), a geared motor (12) and a connecting rod (14). The turntable (11) is rotatably mounted on the testing table (1). The geared motor (12) is mounted on the testing table (1). The output end of the geared motor (12) is coaxially connected to the turntable (11). An eccentric column (13) is provided on the turntable (11). The two ends of the connecting rod (14) are rotatably connected to the eccentric column (13) and the moving plate (8). When the reduction motor (12) is started, the moving plate (8) will synchronously drive the collar (9) and the ring (10) to slide back and forth on the outer wall of the rotating rod (6) and the rotating shaft (7).

4. The intelligent rigidity and strength sensing and detection device for a surfboard according to claim 2, characterized in that, The outer wall of the rotating rod (6) is provided with a spiral groove 1 (601), a straight groove 1 (602), a spiral groove 2 (603) and a straight groove 2 (604) along its length direction, and the spiral groove 1 (601), the straight groove 1 (602), the spiral groove 2 (603) and the straight groove 2 (604) are connected end to end in sequence; The projections of the first spiral groove (601), the first straight groove (602), the second spiral groove (603), and the second straight groove (604) form a parallelogram.

5. The intelligent rigidity and strength sensing and detection device for a surfboard according to claim 4, characterized in that, The outer wall of the rotating shaft (7) is provided with shaft groove 1 (701), thread groove 1 (702), shaft groove 2 (703) and thread groove 2 (704) along its length direction, and the shaft groove 1 (701), the thread groove 1 (702), the shaft groove 2 (703) and the thread groove 2 (704) are connected end to end in sequence; The first spiral groove (601) corresponds to the first shaft groove (701), the first straight groove (602) corresponds to the first threaded groove (702), the second spiral groove (603) corresponds to the second shaft groove (703), and the second straight groove (604) corresponds to the second threaded groove (704).

6. The intelligent rigidity and strength sensing and detection device for a surfboard according to claim 5, characterized in that, The inner wall of the collar (9) is fitted with rolling balls (15), and the rolling balls (15) are also fitted into the spiral groove (601). The inner wall of the collar (10) is fitted with a steel ball (16), which is also fitted into the shaft groove (701).

7. The intelligent rigidity and strength sensing and detection device for a surfboard according to claim 6, characterized in that, A large pulley (17) is coaxially provided on the outer wall of the rotating rod (6), and a large bevel gear (18) is coaxially provided on the outer wall of the rotating shaft (7). During one reciprocating movement of the collar (9), the ball (15) will slide through the spiral groove one (601), the straight groove one (602), the spiral groove two (603) and the straight groove two (604) in sequence, and the rotating rod (6) will perform forward rotation, stationary, reverse rotation and stationary actions in sequence; During one reciprocating movement of the collar (10), the steel ball (16) will slide through the shaft groove one (701), the thread groove one (702), the shaft groove two (703) and the thread groove two (704) in sequence, and the rotating shaft (7) will perform the actions of stationary, forward rotation, stationary and forward rotation in sequence.

8. The intelligent rigidity and strength sensing and detection device for a surfboard according to claim 7, characterized in that, The translation mechanism includes a slide rail (19) and a lead screw (20). The slide rail (19) is horizontally arranged on the testing table (1). The tooling table (2) is slidably engaged with the slide rail (19). The lead screw (20) is horizontally rotatably arranged on the slide rail (19), and the lead screw (20) is threadedly engaged with the tooling table (2). A small pulley (21) is coaxially arranged on the lead screw (20), and the small pulley (21) and the large pulley (17) are connected by a toothed belt (22).

9. The intelligent rigidity and strength sensing and detection device for a surfboard according to claim 7, characterized in that, The vertical movement mechanism includes a bracket (23) and a threaded rod (24). The bracket (23) is vertically mounted on the testing table (1). The slide (3) is slidably engaged with the bracket (23). The threaded rod (24) is vertically rotatably mounted on the bracket (23) and is threadedly engaged with the slide (3). A transmission shaft (25) is vertically rotatably mounted on the testing table (1). One end of the transmission shaft (25) is coaxially connected to the threaded rod (24), and the other end of the transmission shaft (25) is coaxially mounted with a small bevel gear (26) that meshes with the large bevel gear (18).

10. A method for detecting the rigidity strength of a surfboard using the intelligent sensing and detection device according to any one of claims 1-9, characterized in that, Includes the following steps: Step 1: Clamping and positioning. Fix the surfboard to be tested on the tooling table, adjust the height of the pressure roller so that it abuts against the top surface of the surfboard and maintains the preset contact pressure, start the reduction motor, so that the turntable drives the moving plate to start reciprocating motion through the connecting rod, and the drive mechanism enters the working state. Step 2: Forward detection. The collar drives the ball to slide through the spiral groove one, the rotating rod rotates forward and drives the screw to rotate forward synchronously through the toothed belt, the tooling table moves horizontally along the slide rail in the first direction, and at the same time the collar drives the steel ball to be in the shaft groove one, the rotating shaft is stationary, the threaded rod remains stationary, the slide and pressure roller maintain the current height. When the tooling table moves to the end of the stroke, the ball enters the straight groove one, the rotating rod is stationary, the tooling table remains stationary, forming the first stationary window period; Step 3: Stepped pressure application. During the first static window period, the collar drives the steel ball to slide into the first threaded groove. The shaft rotates forward and drives the threaded rod to rotate forward synchronously through the meshing of the bevel gear. The carriage drives the pressure sensor and pressure roller to move down a preset distance, applying the first level of pressure to the surfboard and collecting rigidity data. Subsequently, the collar drives the steel ball into the second shaft groove. The shaft stops, the carriage maintains its current height, and the collar drives the ball into the second spiral groove. The rotating rod reverses and drives the tooling table to move horizontally in the opposite direction. At the same time, the collar is in the second shaft groove, and the shaft and carriage remain stationary. When the tooling table moves to the end of another stroke, the ball enters the second straight groove, the rotating rod stops again, forming the second static window period. The collar drives the steel ball into the second threaded groove, the shaft rotates forward again and drives the carriage to continue to move down a preset distance, applying the second level of pressure in a stepped increasing manner and collecting data. Step 4: Cyclic testing and reset. Repeat steps 2 and 3 to make the tooling table move the surfboard horizontally back and forth multiple times. During the static window period at the end of each stroke, multi-level step pressure is applied sequentially to achieve continuous multi-point rigidity strength testing along the entire length of the surfboard. After the test is completed, the reduction motor stops running, all mechanisms are reset, the surfboard is released from its fixation and removed.

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