A helmet quality detector

Abstract

The application relates to the technical field of quality detection, in particular to a helmet quality detector, which comprises a supporting circular table, a helmet limiting unit, a shielding unit and a synchronous detection unit, the synchronous detection unit is integrated with an extrusion and abrasion assembly and an impact and puncture assembly, multi-station switching is realized through a rotating supporting assembly, and four detections of impact resistance, puncture, abrasion and extrusion can be simultaneously conducted on multiple helmets; the application has the advantages of high detection efficiency, simple operation, safety and reliability, high function integration and the like, and is suitable for rapid quality inspection in the helmet production process.

Description

Technical Field

[0001] This invention relates to the field of quality inspection technology, specifically a helmet quality inspection instrument. Background Technology

[0002] A helmet is a type of head protection widely used in construction, road cycling, and sports competitions. A helmet mainly consists of a shell, liner, and suspension system. The shell absorbs most of the impact force through deformation, the liner provides shock absorption, and the suspension system, located between the shell and liner, is usually adjustable to accommodate different wearers' head shapes. Because helmets are protective gear, quality inspection during the manufacturing process is essential.

[0003] Existing helmet quality testing devices typically include impact resistance testing devices, puncture resistance testing devices, abrasion resistance testing devices, and compression resistance testing devices. When performing different types of tests on a helmet, the testing mechanism or testing head needs to be changed, which makes the operation process cumbersome and reduces the efficiency of helmet quality testing. Therefore, in view of the above situation, there is an urgent need to develop a helmet quality testing instrument to overcome the shortcomings in current practical applications. Summary of the Invention

[0004] The purpose of this invention is to provide a helmet quality testing instrument to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A helmet quality testing instrument includes: a supporting truncated cone and a base, the base being fixedly disposed on the outer side of the bottom end of the supporting truncated cone; a helmet positioning unit connected to the supporting truncated cone and arranged in a ring at equal intervals, used to cooperate with the supporting truncated cone to position and support multiple helmets to be tested; a shielding unit symmetrically disposed on the outer side of the supporting truncated cone, connected to the supporting truncated cone and the base, used to cooperate with the supporting truncated cone to surround and protect the testing space and to drive the helmet positioning unit; and a synchronous detection unit fixedly disposed on the outer side of the top end of the supporting truncated cone, used to cooperate with the helmet positioning unit to sequentially perform multiple synchronous tests on each helmet; wherein, the synchronous detection unit includes: a support box, a crushing and abrasion component, an impact and puncture component, and a rotating support component, the support box being disposed between the helmet positioning units and fixedly connected to the supporting truncated cone, the support box being provided with a rotating support component, the rotating support component being provided with an impact and puncture component for impact testing and puncture testing of the helmet, and the impact and puncture component being provided with a crushing and abrasion component for wear testing and crushing testing outside the impact and abrasion component, the crushing and abrasion component being connected to the rotating support component.

[0007] As a further embodiment of the present invention: the rotating support assembly includes: a support disc, a connecting column, and a switching motor. The support disc is disposed on the outer side of the top of the support box. A connecting column is disposed between the support disc and the support box. The connecting column is fixedly connected to the support disc and rotatably connected to the top wall of the support box. It is used to cooperate with the support disc to support the extrusion and wear assembly and the impact and puncture assembly. The switching motor is fixedly disposed on the top of the inner side of the support box. The output end of the switching motor is connected to the connecting column through a gear.

[0008] As a further embodiment of the present invention: the extrusion abrasion assembly includes: a lifting block, a lifting control tube, a control piston, a control groove, an extrusion plate, a drive motor, a grinding disc, and a control component. The lifting blocks are symmetrically arranged on the outside of the connecting column and are slidably connected to the support disc. A lifting control tube is symmetrically arranged between the two lifting blocks. The lifting control tube is fixedly connected to the support disc. One end is connected to the control component arranged inside the support box, and the other end is arranged in the control groove located inside the lifting block. A control piston that is slidably connected to the control groove is fixedly arranged on the outside of the lifting block. An extrusion plate and a drive motor are respectively fixedly arranged on the outside of the bottom end of the two lifting blocks. The output end of the drive motor is fixedly connected to the grinding disc.

[0009] As a further embodiment of the present invention: the control component includes: a telescopic control component, a guide component, a limiting slide plate, a semi-arc plate, and a transmission control groove. The four semi-arc plates are abutted against the inner side of the support box and connected to the support box through the telescopic control component. A transmission control groove is provided on the inner side of each of the four semi-arc plates. A limiting slide plate is slidably provided on the inner side of the transmission control groove. A guide component is fixedly provided on the outer side of the limiting slide plate. The other end of the guide component is slidably connected to the lifting control tube, which is used to cooperate with the support box to realize independent driving control of the extrusion plate and the grinding disc.

[0010] As a further embodiment of the present invention: the impact puncture assembly includes: an air pump, a fixed tube, a sub-control tube, a sub-control cavity, an impact tube, a sealing piston, a puncture component, an impact component, a positioning seat, a positioning block, and a take-up and release assembly. The air pump is located on the outside of the support disc, and its output end is connected to the support disc through the fixed tube. Sub-control tubes are symmetrically arranged on the fixed tube, and the other end of the sub-control tube is connected to the sub-control cavity located on the inside of the support disc. The bottom ends of the sub-control cavities on both sides are provided with impact tubes connected to the support disc, and a sealing piston is fixedly arranged on the outside of the other end of the impact tube. The outer sides of the two impact tubes are respectively provided with piercing and impact components that are slidably connected to the sealing piston. The outer side of the impact tube is provided with a positioning seat that is fixedly connected to the support disc. Several positioning blocks are slidably provided on the outer walls of the impact component and the piercing component. A spring is provided between the positioning block and the impact component and the piercing component to cooperate with the positioning groove provided on the inner side of the positioning seat to complete the positioning of the impact component and the piercing component. A retraction assembly is also provided between the impact component and the piercing component and the support disc. Solenoid valves are fixedly provided on the inner sides of the impact tube and the sub-control tube.

[0011] As a further embodiment of the present invention: the take-up and release assembly includes: a take-up and release motor, a connector, a take-up roller, a connecting rope, and a fixing frame. Take-up and release motors fixedly connected to the support disc are provided on the outer sides of both the impact and piercing parts. A take-up roller rotatably connected to the fixing frame is provided on the outer side of the output end of the take-up and release motor. A connector is fixedly provided on the output end of the take-up and release motor and is arranged opposite to the take-up roller to cooperate with the take-up and release motor to realize the rotation of the take-up roller. A connecting rope is fixedly provided on the outer side of the take-up roller, and the other end of the connecting rope is connected to the impact or piercing part.

[0012] As a further embodiment of the present invention: the protective unit includes: a lifting control component, a drive control plate, a connecting rod, a sliding plate, a rotating rod, a flipping frame, a protective cover, a toothed block, and a limiting frame. The lifting control component is fixedly installed at the bottom inner side of the base, and the other end of the lifting control component is fixedly connected to the drive control plate. Sliding plates that are slidably connected to the base are symmetrically arranged on both sides of the drive control plate. A connecting rod is provided between the sliding plate and the drive control plate. One end of the connecting rod is rotatably connected to the drive control plate, and the other end is rotatably connected to the sliding plate. A toothed block is slidably arranged on the outer side of the other end of the sliding plate. A spring is fixedly installed between the toothed block and the sliding plate. The toothed block is slidably connected to the limiting frame fixedly installed on the outer side of the support disc. The toothed block is meshed with a connecting gear installed on the outer side of the rotating rod. The rotating rod is rotatably connected to a fixed seat fixedly installed on the outer side of the support disc. A flipping frame is fixedly installed on the outer side of the rotating rod, and the other end of the flipping frame is fixedly connected to the protective cover.

[0013] As a further embodiment of the present invention: the helmet limiting unit includes: a transmission frame, a transmission plate, a positioning post, a positioning tube, a locking element, and a transmission control element. The positioning post is fixedly disposed on the outside of the supporting truncated cone. Positioning tubes are symmetrically disposed on the positioning post. The positioning tubes are fixedly connected to the supporting truncated cone. A locking element is slidably disposed on the inner side of one end of the positioning tube, and a transmission control element is slidably disposed on the inner side of the other end. The transmission control element is fixedly connected to the transmission plate disposed on the inner side of the supporting truncated cone. The transmission plate is connected to the transmission frame that leads to the inner side of the base. The transmission frame is slidably connected to the base. A spring is fixedly disposed between the transmission frame and the base.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. Integrated design, multi-functional: It integrates four detection functions, namely impact resistance, puncture, abrasion and extrusion, into one machine, eliminating the need to replace the detection head or equipment and greatly improving detection efficiency;

[0016] 2. Synchronous multi-station inspection: Supports fixing multiple helmets at the same time and rotating to switch inspection stations to achieve batch continuous inspection, which is suitable for rapid quality inspection on the production line;

[0017] 3. The detection process is automated and highly controllable: the detection force is precisely controlled through air pump pressure regulation and electric control components, ensuring that the detection results are repeatable and adjustable;

[0018] 4. Comprehensive safety protection: The shielding unit can be closed to form a protective cover to prevent debris from flying during the testing process and ensure the safety of operators;

[0019] 5. Compact structure and easy operation: All components work in coordination, with a high degree of automation, reducing manual intervention and lowering the difficulty and time cost of operation;

[0020] 6. Wide range of applications: Applicable to quality inspection of various types of helmets (such as engineering, cycling, and sports helmets), with good versatility and expandability. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of a helmet quality testing instrument.

[0022] Figure 2 This is a schematic diagram of the synchronous detection unit in a helmet quality inspection instrument.

[0023] Figure 3 This is a cross-sectional view of the synchronous detection unit in a helmet quality inspection instrument.

[0024] Figure 4 This is a schematic diagram of the control components in a helmet quality testing instrument.

[0025] Figure 5 This is a schematic diagram of the impact puncture component in a helmet quality testing instrument.

[0026] Figure 6 This is a schematic diagram of the internal structure of the take-up roller in a helmet quality testing instrument.

[0027] Figure 7 This is a schematic diagram of the protective unit in a helmet quality testing instrument.

[0028] Figure 8 This is a schematic diagram of the flipping frame in a helmet quality testing instrument.

[0029] Figure 9 This is a schematic diagram of the helmet limiting unit in a helmet quality testing instrument.

[0030] In the diagram: 1. Support frustum; 2. Synchronous detection unit; 3. Protective unit; 4. Helmet limiting unit; 5. Support box; 6. Extrusion and wear assembly; 7. Impact and puncture assembly; 8. Rotary support assembly; 9. Support disc; 10. Connecting column; 11. Switching motor; 12. Driving gear; 13. Driven gear; 14. Lifting block; 15. Lifting control tube; 16. Telescopic control component; 17. Control piston; 18. Control groove; 19. Extrusion plate; 20. Drive motor; 21. Grinding disc; 22. Guide control; 23. Limiting slide; 24. Semi-arc plate; 25. Transmission and control slide; 26. Air pump; 27. Solid... 28. Fixed tube; 29. ​​Sub-control tube; 30. Sub-control chamber; 31. Impact tube; 32. Sealing piston; 33. Puncture component; 34. Impact component; 35. Positioning seat; 36. Positioning block; 37. Retractor; 38. Retractor roller; 39. Connecting rope; 40. Fixed frame; 41. Transmission frame; 42. Transmission board; 43. Positioning column; 44. Positioning tube; 45. Locking component; 46. Lifting control component; 47. Drive control board; 48. Connecting rod; 49. Slide plate; 50. Rotating rod; 51. Tilting frame; 52. Protective cover; 53. Tooth block; 54. Limiting frame; 55. Transmission control component; 56. Base. Detailed Implementation

[0031] The technical solution of this application will be further described in detail below with reference to specific embodiments.

[0032] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0033] Please see Figure 1 , Figure 2 and Figure 7In one embodiment of the present invention, a helmet quality testing instrument includes: a supporting frustum 1 and a base 56, the base 56 being fixedly disposed on the outer side of the bottom end of the supporting frustum 1; a helmet limiting unit 4, the helmet limiting unit 4 being connected to the supporting frustum 1 and arranged in a ring at equal intervals, used to cooperate with the supporting frustum 1 to complete the positioning and support of multiple helmets to be tested; a shielding unit 3, the shielding unit 3 being symmetrically disposed on the outer side of the supporting frustum 1, connected to the supporting frustum 1 and connected to the base 56, used to cooperate with the supporting frustum 1 to complete the surrounding protection of the testing space and to complete the driving of the helmet limiting unit 4; and a synchronous detection unit 2, the synchronous detection unit 2 being fixedly disposed on... On the outer side of the top of the supporting truncated cone 1, multiple synchronous tests are performed on each helmet in sequence in conjunction with the helmet limiting unit 4. The synchronous testing unit 2 includes: a support box 5, a crushing and abrasion component 6, an impact and puncture component 7, and a rotating support component 8. The support box 5 is disposed between the helmet limiting units 4 and is fixedly connected to the supporting truncated cone 1. The rotating support component 8 is provided on the support box 5. The impact and puncture component 7 is provided on the rotating support component 8 for impact and puncture testing of the helmet. The crushing and abrasion component 6 for wear and crush testing is also provided on the outer side of the impact and puncture component 7. The crushing and abrasion component 6 is connected to the rotating support component 8.

[0034] In this embodiment, during device operation, four helmets are placed on the support platform 1 and supported by the helmet limiting unit 4. The shielding unit 3 operates, surrounding and protecting the support platform 1 from both sides, while simultaneously driving the helmet limiting unit 4. The helmet limiting unit 4, in conjunction with the support platform 1, synchronously locks the four helmets to be tested. Subsequently, the compression and abrasion component 6 and the impact and puncture component 7 independently perform impact testing, puncture testing, abrasion testing, and compression testing on the four helmets, respectively. After one round of testing, the rotating support component 8 drives the compression and abrasion component 6 and the impact and puncture component 7 to rotate and switch. Then, the compression and abrasion component 6 and the impact and puncture component 7 perform a second round of testing on the helmets. Through four rounds of testing, four types of helmet tests are completed. By setting up the synchronous testing unit 2, in conjunction with the shielding unit 3 and the helmet limiting unit 4, multiple helmets can be tested for different types of tests at the same time without changing the testing equipment, thus greatly simplifying the operation process and significantly improving the efficiency of helmet quality testing.

[0035] In one embodiment of the present invention, please refer to Figure 2 and Figure 3The rotating support assembly 8 includes a support disc 9, a connecting column 10, and a switching motor 11. The support disc 9 is located on the outer side of the top of the support box 5. The connecting column 10 is provided between the support disc 9 and the support box 5. The connecting column 10 is fixedly connected to the support disc 9 and rotatably connected to the top wall of the support box 5. It is used to cooperate with the support disc 9 to support the extrusion and wear assembly 6 and the impact and puncture assembly 7. The switching motor 11 is fixedly located on the top of the inner side of the support box 5. The output end of the switching motor 11 is connected to the connecting column 10 through a gear.

[0036] In this embodiment, the gear component includes a driving gear 12 and a driven gear 13. The driving gear 12 is fixedly connected to the output end of the switching motor 11, and the driven gear 13 is fixedly disposed on the outside of the connecting column 10. The driving gear 12 and the driven gear 13 are meshed together. The support disk 9, together with the connecting column 10 and the support box 5, supports the extrusion and wear component 6 and the impact and puncture component 7. During the processing, the switching motor 11 realizes the rotation of the connecting column 10 through the gear component. The connecting column 10 drives the support disk 9 to rotate, completing the switching of the processing positions of the extrusion and wear component 6 and the impact and puncture component 7. Thus, the helmet can be subjected to impact testing, puncture testing, wear testing and extrusion testing at one time, which greatly improves the testing efficiency.

[0037] In one embodiment of the present invention, please refer to Figure 3 The extrusion and abrasion assembly 6 includes: a lifting block 14, a lifting control tube 15, a control piston 17, a control groove 18, an extrusion plate 19, a drive motor 20, a grinding disc 21, and a control assembly. The lifting blocks 14 are symmetrically arranged on the outside of the connecting column 10 and are slidably connected to the support disc 9. The lifting control tube 15 is symmetrically arranged between the two lifting blocks 14. The lifting control tube 15 is fixedly connected to the support disc 9. One end is connected to the control assembly arranged inside the support box 5, and the other end is arranged in the control groove 18 located inside the lifting block 14. The control piston 17 is fixedly arranged on the outside of the lifting block 14 and slidably connected to the control groove 18. The extrusion plate 19 and the drive motor 20 are fixedly arranged on the outside of the bottom end of the two lifting blocks 14 respectively. The output end of the drive motor 20 is fixedly connected to the grinding disc 21.

[0038] In this embodiment, the control component can drive the air inside the lifting control pipes 15 on both sides to flow, and in conjunction with the control piston 17 and the control groove 18, realize the lifting of the lifting blocks 14 on both sides, so that the extrusion plate 19 and the grinding disc 21 contact the top of the helmet on both sides respectively. The extrusion plate 19, in conjunction with the control component, performs extrusion detection on the helmet. The drive motor 20 drives the grinding disc 21 to rotate through the output end. The grinding disc 21 completes the wear detection of the helmet. During the rotation of the support disc 9, it can drive the lifting block 14 to rotate synchronously, thereby completing the switching of the detection station, and thus in conjunction with the impact puncture component 7, completes the comprehensive detection of the helmet.

[0039] In one embodiment of the present invention, please refer to Figure 3 and Figure 4 The control components include: a telescopic control component 16, a guide component 22, a limiting slide plate 23, a semi-arc plate 24, and a transmission control groove 25. The four semi-arc plates 24 are abutted against the inner side of the support box 5 and connected to the support box 5 through the telescopic control component 16. A transmission control groove 25 is provided on the inner side of each of the four semi-arc plates 24. A limiting slide plate 23 is slidably provided on the inner side of the transmission control groove 25. A guide component 22 is fixedly provided on the outer side of the limiting slide plate 23. The other end of the guide component 22 is slidably connected to the lifting control tube 15 and is used to cooperate with the support box 5 to realize independent driving control of the extrusion plate 19 and the grinding disc 21.

[0040] In this embodiment, the telescopic control component 16 is an electric push rod. The telescopic control component 16 can drive the connected semi-arc plate 24 to move up and down independently. When the support disk 9 rotates, the guide control component 22 will drive the limiting slide 23 to rotate within the transmission control groove 25. The guide control component 22 includes a first push rod fixedly disposed on the outside of the limiting slide 23 and a first piston fixedly disposed on the first push rod. The first piston is slidably disposed inside the lifting control tube 15. When the support disk 9 rotates, the limiting slide 23 will rotate along the transmission control groove 25. Subsequently, the telescopic control component 16 controls the connected semi-arc plate 24 to move up and down, thereby completing the independent driving control of the extrusion plate 19 and the grinding disc 21, ensuring the effectiveness of the extrusion test and wear test.

[0041] In one embodiment of the present invention, please refer to Figure 5 and Figure 6The impact puncture assembly 7 includes: an air pump 26, a fixed tube 27, a sub-control tube 28, a sub-control cavity 29, an impact tube 30, a sealing piston 31, a puncture component 32, an impact component 33, a positioning seat 34, a positioning block 35, and a take-up and release assembly. The air pump 26 is located on the outside of the support disc 9, and its output end is connected to the support disc 9 through the fixed tube 27. Sub-control tubes 28 are symmetrically arranged on the fixed tube 27, and the other end of the sub-control tube 28 is connected to the sub-control cavity 29 located inside the support disc 9. An impact tube 30 connected to the support disc 9 is provided at the bottom end of each of the two sub-control cavities 29. A sealing piston 31 is fixedly arranged on the outside of the other end of the impact tube 30. A piercing element 32 and an impact element 33 are respectively provided on the outer side of the impact tube 30 and are slidably connected to the sealing piston 31. A positioning seat 34 is provided on the outer side of the impact tube 30 and is fixedly connected to the support disc 9. Several positioning blocks 35 are slidably provided on the outer walls of the impact element 33 and the piercing element 32. A spring is provided between the positioning block 35 and the impact element 33 and the piercing element 32 to cooperate with the positioning groove provided on the inner side of the positioning seat 34 to complete the positioning of the impact element 33 and the piercing element 32. A retraction assembly is also provided between the impact element 33 and the piercing element 32 and the support disc 9. Solenoid valves are fixedly provided on the inner sides of the impact tube 30 and the sub-control tube 28.

[0042] In this embodiment, the impact member 33 includes an impact rod and an impact block fixedly disposed on the outside of the impact rod, and the puncture member 32 includes a puncture rod and a puncture head fixedly disposed on the outside of the puncture rod. Both the impact rod and the puncture rod have sealing grooves on their inner sides that are slidably connected to the sealing piston 31. Pressure detectors are installed on the inner sides of the two sub-control chambers 29. During power accumulation, the solenoid valve located inside the impact tube 30 closes, and the air pump 26, in conjunction with the fixed tube 27 and the sub-control tube 28, delivers air into the sub-control chamber 29. As the pressure reaches a specified value, the solenoid valve inside the sub-control tube 28 closes. Subsequently, the solenoid valve inside the impact tube 30 opens, and the impact member 33 and the puncture member 32 fly out. The impact member 33 completes the impact detection of the helmet, and the puncture member 32 completes the puncture detection of the helmet. By controlling the pressure, the detection force can be adjusted, ensuring the flexibility and diversity of the detection results. By setting the impact-puncture assembly 7, the helmet can undergo impact and puncture detection with controllable force, greatly improving the equipment's helmet detection effect.

[0043] In one embodiment of the present invention, please refer to Figure 6The take-up and release assembly includes: a take-up and release motor 36, a connector 37, a take-up roller 38, a connecting rope 39, and a fixing frame 40. Take-up and release motors 36 are fixedly connected to the support disc 9 on the outer sides of the two impact members 33 and the piercing member 32. A take-up roller 38 is rotatably connected to the fixing frame 40 on the outer side of the output end of the take-up and release motor 36. A connector 37 is fixedly installed on the output end of the take-up and release motor 36, which is opposite to the take-up roller 38, and is used to cooperate with the take-up and release motor 36 to realize the rotation of the take-up roller 38. A connecting rope 39 is fixedly installed on the outer side of the take-up roller 38, and the other end of the connecting rope 39 is connected to the impact member 33 or the piercing member 32.

[0044] In this embodiment, the connector 37 is an electric push rod. During winding, the connector 37 extends, and the take-up motor 36 cooperates with the connector 37 to rotate the take-up roller 38. The take-up roller 38, together with the connecting rope 39, retracts the impact member 33 and the piercing member 32. As the positioning block 35 cooperates with the positioning seat 34 to complete the positioning of the impact member 33 and the piercing member 32, the connector 37 is disconnected from the take-up roller 38, thereby ensuring the smoothness of the impact member 33 and the piercing member 32 during descent and ensuring the effectiveness of the test.

[0045] In one embodiment of the present invention, please refer to Figure 1 , Figure 7 and Figure 8 The shielding unit 3 includes: a lifting control component 46, a drive control plate 47, a connecting rod 48, a sliding plate 49, a rotating rod 50, a tilting frame 51, a protective cover 52, a toothed block 53, and a limiting frame 54. The lifting control component 46 is fixedly installed on the bottom inner side of the base 56, and the other end of the lifting control component 46 is fixedly connected to the drive control plate 47. Sliding plates 49 are symmetrically arranged on both sides of the drive control plate 47 and are slidably connected to the base 56. A connecting rod 48 is provided between the sliding plate 49 and the drive control plate 47, and one end of the connecting rod 48 is connected to the drive control plate 47. The other end is rotatably connected to the slide plate 49. A toothed block 53 is slidably provided on the outer side of the other end of the slide plate 49. A spring is fixedly provided between the toothed block 53 and the slide plate 49. The toothed block 53 is slidably connected to the limiting frame 54 fixedly provided on the outer side of the support disc 9. The toothed block 53 is meshed with the connecting gear provided on the outer side of the rotating rod 50. The rotating rod 50 is rotatably connected to the fixed seat fixedly provided on the outer side of the support disc 9. A flipping frame 51 is fixedly provided on the outer side of the rotating rod 50. The other end of the flipping frame 51 is fixedly connected to the protective cover 52.

[0046] In this embodiment, the lifting control component 46 is an electric push rod. The lifting control component 46 can realize the lifting and lowering of the drive control plate 47. The drive control plate 47 drives the slide plate 49 to move through the connecting rod 48. The slide plate 49 drives the toothed block 53 to move. The toothed block 53 cooperates with the connecting gear to realize the rotation of the rotating rod 50. The rotating rod 50 realizes the flipping of the protective cover 52 through the flipping frame 51. The protective covers 52 on both sides cooperate with the supporting truncated cone 1 to complete the enclosure and protection of the helmet during the test, thereby avoiding the splashing of debris generated during the test and improving the safety of the equipment during use. At the same time, the upward moving drive control plate 47 can also complete the driving of the helmet limiting unit 4, which greatly improves the convenience of the equipment during use and ensures the stability of the helmet during the test, ensuring the effectiveness and reliability of the test.

[0047] In one embodiment of the present invention, please refer to Figure 7 and Figure 9 The helmet limiting unit 4 includes: a control frame 41, a control plate 42, a positioning post 43, a positioning tube 44, a locking element 45, and a control element 55. The positioning post 43 is fixedly installed on the outside of the supporting truncated cone 1. The positioning tube 44 is symmetrically arranged on the positioning post 43. The positioning tube 44 is fixedly connected to the supporting truncated cone 1. The locking element 45 is slidably arranged on the inner side of one end of the positioning tube 44, and the control element 55 is slidably arranged on the inner side of the other end. The control element 55 is fixedly connected to the control plate 42 arranged on the inner side of the supporting truncated cone 1. The control plate 42 is connected to the control frame 41 that leads to the inner side of the base 56. The control frame 41 is slidably connected to the base 56. A spring is fixedly arranged between the control frame 41 and the base 56.

[0048] In this embodiment, the locking component 45 includes a second piston slidably disposed inside the positioning tube 44 and a locking frame fixedly connected to the second piston. The transmission control component 55 includes a third piston slidably disposed inside the other end of the positioning tube 44 and a third push rod fixedly connected to the third piston. The other end of the third push rod is fixedly connected to the transmission control plate 42. When the drive control plate 47 moves upward, the drive control plate 47, in conjunction with the transmission control frame 41, drives the transmission control plate 42 to move. The transmission control plate 42 drives the transmission control component 55 to move inside the positioning tube 44, driving the locking components 45 on both sides to unfold outward, thereby completing the clamping and locking of the helmet, ensuring the stability and reliability of the helmet during testing, and helping to improve the testing effect.

[0049] This helmet quality testing instrument has four helmet limiting units 4 on the supporting pedestal 1, which can simultaneously fix four helmets to be tested. After the shielding unit 3 is closed, it forms a closed testing space to ensure safety. The rotating support component 8 drives the extrusion and wear component 6 and the impact and puncture component 7 to rotate, aligning them with the four helmet stations in sequence. The control component drives the lifting block 14 to descend, and the extrusion plate 19 applies pressure to the helmet to conduct a compressive strength test. The drive motor 10 drives the grinding disc 21 to rotate to simulate the wear of the helmet surface. The air pump 26 inflates the impact tube 30 with air and pressurizes it. After reaching the set pressure, the air is released. The impact component 33 and the puncture component 32 perform impact and puncture tests on the helmet, respectively. After the test is completed, the retraction component automatically retracts the impact component 33 and the puncture component 32, and the rotating support component 8 switches to the next station until all test items are completed.

[0050] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these should also be considered within the scope of protection of the present invention. These will not affect the effectiveness of the implementation of the present invention or the practicality of the patent.

Claims

1. A helmet quality testing instrument, characterized in that, include: A supporting frustum and a base are provided, with the base fixedly mounted on the outer side of the bottom end of the supporting frustum. A helmet positioning unit is connected to a support truncated cone and is arranged in a ring at equal intervals to cooperate with the support truncated cone in positioning and supporting multiple helmets to be tested. The shielding unit is symmetrically arranged on the outside of the supporting truncated cone, connected to the supporting truncated cone and the base, and is used to cooperate with the supporting truncated cone to complete the enclosure and protection of the detection space and to complete the driving of the helmet limiting unit. A synchronous detection unit is fixedly installed on the outer side of the top of the supporting truncated cone, and is used to cooperate with the helmet limiting unit to complete multiple synchronous detections of each helmet in sequence. The synchronous detection unit includes a support box, a crushing and abrasion assembly, an impact and puncture assembly, and a rotating support assembly. The support box is disposed between the helmet limiting units and is fixedly connected to the support frustum. The rotating support assembly is disposed on the support box. The impact and puncture assembly is disposed on the rotating support assembly for impact detection and puncture detection of the helmet. The crushing and abrasion assembly for wear detection and crushing detection is disposed on the outside of the impact and puncture assembly. The crushing and abrasion assembly is connected to the rotating support assembly.

2. The helmet quality testing instrument according to claim 1, characterized in that, The rotating support assembly includes a support disc, a connecting column, and a switching motor. The support disc is located on the outer side of the top of the support box. A connecting column is provided between the support disc and the support box. The connecting column is fixedly connected to the support disc and rotatably connected to the top wall of the support box. It is used to cooperate with the support disc to support the extrusion and wear components and the impact and puncture components. The switching motor is fixedly located on the top of the inner side of the support box. The output end of the switching motor is connected to the connecting column through a gear.

3. The helmet quality testing instrument according to claim 2, characterized in that, The extrusion and abrasion assembly includes: a lifting block, a lifting control tube, a control piston, a control groove, an extrusion plate, a drive motor, a grinding disc, and a control component. The lifting blocks are symmetrically arranged on the outside of the connecting column and are slidably connected to the support disc. The lifting control tube is symmetrically arranged between the two lifting blocks and is fixedly connected to the support disc. One end of the lifting control tube is connected to the control component located inside the support box, and the other end is located in the control groove located inside the lifting block. A control piston that is slidably connected to the control groove is fixedly arranged on the outside of the lifting block. An extrusion plate and a drive motor are fixedly arranged on the outside of the bottom end of the two lifting blocks, respectively. The output end of the drive motor is fixedly connected to the grinding disc.

4. The helmet quality testing instrument according to claim 3, characterized in that, The control assembly includes: a telescopic control component, a guide component, a limiting slide plate, a semi-arc plate, and a transmission control groove. The four semi-arc plates are abutted against the inner side of the support box and connected to the support box through the telescopic control component. Each of the four semi-arc plates has a transmission control groove on its inner side. A limiting slide plate is slidably arranged inside the transmission control groove. A guide component is fixedly arranged outside the limiting slide plate. The other end of the guide component is slidably connected to the lifting control tube, which is used to cooperate with the support box to realize independent driving control of the extrusion plate and the grinding disc.

5. The helmet quality testing instrument according to claim 4, characterized in that, The impact puncture assembly includes: an air pump, a fixed tube, a sub-control tube, a sub-control chamber, an impact tube, a sealing piston, a puncture component, an impact component, a positioning seat, positioning blocks, and a take-up and release assembly. The air pump is located outside the support disc, and its output end is connected to the support disc through the fixed tube. Sub-control tubes are symmetrically arranged on the fixed tube, and the other end of the sub-control tube is connected to the sub-control chamber located inside the support disc. Impact tubes connected to the support disc are arranged at the bottom of both sub-control chambers. A sealing piston is fixedly arranged on the outer side of the other end of the impact tube. A puncture component and an impact component are slidably connected to the sealing piston on the outer side of both impact tubes. A positioning seat is fixedly connected to the support disc on the outer side of the impact tube. Several positioning blocks are slidably arranged on the outer walls of the impact component and the puncture component. A spring is arranged between the positioning blocks and the impact component and the puncture component to cooperate with the positioning groove located inside the positioning seat to complete the positioning of the impact component and the puncture component. A take-up and release assembly is also arranged between the impact component and the puncture component and the support disc. Solenoid valves are fixedly arranged inside the impact tube and the sub-control tube.

6. The helmet quality testing instrument according to claim 5, characterized in that, The take-up and release assembly includes: a take-up and release motor, a connector, a take-up roller, a connecting rope, and a fixing frame. Take-up and release motors fixedly connected to the support discs are provided on the outer sides of both the impact and piercing parts. A take-up roller rotatably connected to the fixing frame is provided on the outer side of the output end of the take-up and release motor. A connector is fixedly provided on the output end of the take-up and release motor, which is opposite to the take-up roller, to cooperate with the take-up and release motor to realize the rotation of the take-up roller. A connecting rope is fixedly provided on the outer side of the take-up roller, and the other end of the connecting rope is connected to the impact or piercing part.

7. The helmet quality testing instrument according to claim 1, characterized in that, The protective unit includes: a lifting control component, a drive control plate, a connecting rod, a sliding plate, a rotating rod, a tilting frame, a protective cover, a toothed block, and a limiting frame. The lifting control component is fixedly installed on the bottom inner side of the base, and the other end of the lifting control component is fixedly connected to the drive control plate. Sliding plates that are slidably connected to the base are symmetrically arranged on both sides of the drive control plate. A connecting rod is provided between the sliding plate and the drive control plate. One end of the connecting rod is rotatably connected to the drive control plate, and the other end is rotatably connected to the sliding plate. A toothed block is slidably arranged on the outer side of the other end of the sliding plate. A spring is fixedly installed between the toothed block and the sliding plate. The toothed block is slidably connected to a limiting frame fixedly installed on the outer side of the support disc. The toothed block is meshed with a connecting gear installed on the outer side of the rotating rod. The rotating rod is rotatably connected to a fixed seat fixedly installed on the outer side of the support disc. A tilting frame is fixedly installed on the outer side of the rotating rod, and the other end of the tilting frame is fixedly connected to the protective cover.

8. The helmet quality testing instrument according to claim 7, characterized in that, The helmet limiting unit includes: a control frame, a control plate, a positioning post, a positioning tube, a locking element, and a control element. The positioning post is fixedly installed on the outside of the supporting truncated cone. Positioning tubes are symmetrically arranged on the positioning post. The positioning tubes are fixedly connected to the supporting truncated cone. A locking element is slidably installed on the inner side of one end of the positioning tube, and a control element is slidably installed on the inner side of the other end. The control element is fixedly connected to the control plate installed on the inner side of the supporting truncated cone. The control plate is connected to the control frame that leads to the inner side of the base. The control frame is slidably connected to the base. A spring is fixedly installed between the control frame and the base.

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