A helmet processing puncture testing machine

Abstract

The application belongs to the technical field of puncture testing, and specifically discloses a puncture testing machine for helmet processing, which comprises a guide frame body, sliding guide rods inserted into both sides of the guide frame body, a puncture column penetrating through the guide frame body, a protective base distributed below the guide frame body, a clamping structure arranged on the protective base, the puncture column being opposite to the clamping structure at all times, the sliding guide rods being fixedly connected to the protective base, a pulling structure being connected to the guide frame body, a magnetic tube being fixedly connected to the upper part of the puncture column, an annular electromagnet being fixedly connected to the opposite part of the guide frame body and the magnetic tube, a clamping structure being arranged on the part of the guide frame body close to the sliding guide rods, and a sound sensor and a distance sensor being fixedly connected to the lower part of the guide frame body. The guide frame body in the puncture testing machine can drive the puncture column to move upwards to a suitable position through the annular electromagnet, and then the puncture column can make free fall movement, so that the puncture column can quickly fall into the helmet, and the puncture protection performance of the helmet can be detected.

Description

Technical Field

[0001] The invention belongs to the technical field of puncture testing, and particularly discloses a puncture testing machine for helmet processing. Background Art

[0002] During the production and processing of helmets, a puncture tester is required to test the quality of the helmets. Common helmet puncture testers on the market mainly use a clamping structure to clamp the helmet on a workbench, and then use a puncture test piece to perform a puncture test on the helmet fixed on the workbench. This puncture tester can indeed achieve a good test effect on the puncture performance of the helmet in actual use, but it still has some shortcomings in actual use, such as:

[0003] The existing helmet puncture test machine is not equipped with a good puncture protection structure. When the puncture test piece conducts a puncture test on the helmet, the repulsive force generated by the helmet will drive the puncture test piece to bounce upward. The puncture test piece bounced up by the repulsive force will fall back into the puncture part of the helmet, which will cause the helmet to undergo two puncture tests in a short period of time, making it impossible for the staff to effectively detect the test data of the helmet's initial puncture.

[0004] To this end, we propose a puncture test machine for helmet processing to solve the problem that the puncture test piece bounced up by the repulsive force of the helmet will fall back into the puncture part of the helmet, which will cause the helmet to undergo two puncture tests in a short period of time. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to propose a puncture tester for helmet processing to solve the problem that the puncture test piece that is bounced up by the repulsive force of the helmet will fall back into the puncture part of the helmet, which will cause the helmet to be subjected to two puncture tests in a short period of time.

[0006] To achieve the above objectives, the present invention provides a puncture testing machine for helmet processing, comprising a guide frame and sliding guide rods inserted on both sides of the guide frame, a puncture column passing through the guide frame, a protective base distributed below the guide frame, a clamping structure provided on the protective base, the puncture column is always opposite to the clamping structure, the sliding guide rod is fixedly connected to the protective base, a lifting structure is connected to the guide frame, the upper part of the puncture column is fixedly connected to a magnetic tube, a ring-shaped electromagnet is fixedly connected to the relative position of the guide frame and the magnetic tube, a clamping structure is provided at the position of the guide frame close to the sliding guide rod, and an acoustic sensor and a distance sensor are fixedly connected to the lower part of the guide frame.

[0007] In the above technical solution, further, the sliding guide rod and the protective base are vertically distributed, the clamping structure and the sliding guide rod are arranged opposite to each other, and the detection ends of the acoustic sensor and the distance sensor are opposite to the clamping structure.

[0008] In the above technical solution, further, the puncture column is a columnar structure, an impact head is provided at the upper end of the puncture column, and the portion of the guide frame opposite to the impact head is fixedly connected to the eardrum.

[0009] In the above technical solution, further, a pressure sensor is fixedly connected to the guide frame, and a detection end of the pressure sensor is inserted into the interior of the eardrum, and the eardrum is a hollow cavity structure.

[0010] In the above technical solution, further, the guide frame is fixedly connected to a support column located on the periphery of the annular electromagnet, the support columns are evenly spaced around the annular electromagnet, and the upper ends of the support columns are fixedly connected to elastic columns.

[0011] In the above technical solution, further, the lifting structure includes a lifting motor fixedly connected to the top plate, the output end of the lifting motor is fixedly connected to the upper transmission wheel, the upper transmission wheel is sleeved with a lifting belt, and the lifting belt is provided with through holes at equal intervals.

[0012] In the above technical solution, further, a lower transmission wheel is inserted into the position opposite to the lifting belt and the upper transmission wheel, and the lower transmission wheel and the upper transmission wheel are fixedly connected with through teeth, and the through teeth are inserted into the lifting belt through the through hole, and a support rod is rotatably connected to the lower transmission wheel, and the support rod is fixedly connected to the protective base.

[0013] In the above technical solution, further, the lifting belt is fixedly connected to the guide frame, the lifting belt and the sliding guide rod are arranged in parallel, and the lifting belt does not contact the top plate and the protective base.

[0014] In the above technical solution, further, notches are opened at both ends of the guide frame, and the guide frame is connected to the sliding guide rod through the notches. The clamping structure includes a shell structure relatively fixed on both sides of the notch, and a thrust electromagnet is fixedly connected to the interior of the shell structure.

[0015] In the above technical solution, further, an extrusion block is slidably connected to the interior of the shell structure, and a pushing magnetic block is fixedly connected to one end of the extrusion block close to the thrust electromagnet, and the magnetic poles of the pushing magnetic block and the magnetic poles of the thrust electromagnet repel each other.

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

[0017] 1. The guide frame in the puncture tester can drive the puncture column to move to the appropriate position through the annular electromagnet, so that the puncture column can perform puncture tests on the helmet at different heights. When the puncture column reaches the preset height, the puncture column can perform free fall motion, so that the puncture column can quickly fall onto the helmet, thereby testing the puncture protection performance of the helmet.

[0018] 2. The guide frame and the puncture column in the puncture tester can fall simultaneously during the helmet puncture test, which can avoid the puncture column having a large friction on the surface of the puncture column when the puncture column punctures the helmet, avoid the friction affecting the falling speed of the puncture column, and also avoid the puncture column having a large wear during the working process.

[0019] 3. When the puncture column in the puncture test machine performs a puncture test on the helmet, the repulsive force fed back by the helmet on the puncture column will drive the impact head to hit the eardrum. The repulsive force generated by the eardrum will act on the detection end of the pressure sensor, which can facilitate the pressure sensor to detect the feedback repulsive force of the eardrum and then infer the elasticity of the helmet.

[0020] 4. After the pressure sensor in the puncture test machine detects the feedback repulsive force of the eardrum, the puncture column can move downward under the action of gravity. At this time, the annular electromagnet can work. Since the magnetic poles of the annular electromagnet and the magnetic tube repel each other, this can prevent the puncture column from contacting the helmet again, which can facilitate the staff to detect the preliminary puncture results of the helmet. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present invention;

[0022] Figure 2 This is a diagram showing the connection structure between the lifting belt and the guide frame in the present invention;

[0023] Figure 3 Schematic diagram of the distribution of the lifting belt and the sliding guide rod in the present invention;

[0024] Figure 4 This is a diagram showing the connection structure between the puncture column and the guide frame in the present invention;

[0025] Figure 5 A diagram showing the connection structure between the clamping structure and the guide frame in the present invention;

[0026] Figure 6 for Figure 4 Axonometric diagram of

[0027] Figure 7 A diagram showing the contact structure between the impact head and the eardrum in the present invention;

[0028] Figure 8 for Figure 2 A magnified view of the middle panel.

[0029] 1. Protective base; 2. Clamping structure; 3. Lifting belt; 31. Upper transmission wheel; 32. Lower transmission wheel; 33. Support rod; 34. Through tooth; 35. Through hole; 4. Lifting motor; 5. Sliding guide rod; 6. Guide frame; 61. Pressure sensor; 62. Notch; 63. Ring electromagnet; 64. Sound sensor; 65. Support column; 66. Distance sensor; 67. Tympanic membrane; 7. Puncture column; 71. Impact head; 72. Magnetic tube; 8. Clamping structure; 81. Shell structure; 82. Extrusion block; 83. Thrust electromagnet; 84. Pushing magnetic block; 9. Top plate. DETAILED DESCRIPTION

[0030] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0032] In actual use, the existing helmet puncture test machine is not equipped with a good puncture protection structure. When the puncture test piece conducts a puncture test on the helmet, the repulsive force generated by the helmet will drive the puncture test piece to bounce upward. The puncture test piece bounced up by the repulsive force will fall back into the puncture part of the helmet. This will cause the helmet to be punctured twice in a short period of time, making it impossible for the staff to effectively detect the test data of the initial puncture of the helmet. To this end, we propose the following structure to solve the above problem.

[0033] Example 1: Please refer to Figure 1-8 As shown, the present invention provides a technical solution:

[0034] The present invention is a puncture tester for helmet processing, comprising a guide frame 6 and sliding guide rods 5 plugged into both sides of the guide frame 6, a puncture column 7 passing through the guide frame 6, a protective base 1 distributed below the guide frame 6, a clamping structure 2 provided on the protective base 1, the puncture column 7 always facing the clamping structure 2, the sliding guide rod 5 fixedly connected to the protective base 1, the guide frame 6 is connected to a lifting structure, the upper part of the puncture column 7 is fixedly connected to a magnetic tube 72, the portion of the guide frame 6 facing the magnetic tube 72 is fixedly connected to a ring-shaped electromagnet 63, a clamping structure 8 is provided at the portion of the guide frame 6 close to the sliding guide rod 5, and the lower part of the guide frame 6 is fixedly connected to an acoustic sensor 64 and a distance sensor 66;

[0035] Before the puncture test machine is actually used, the guide frame 6 drives the puncture column 7 to move downward, and then the staff counts the height of the guide frame 6 when the puncture column 7 abuts against the helmet, and then records the height of the guide frame 6 as the preset value detected by the distance sensor 66. When the puncture test machine is actually used, the staff fixes the helmet on the protective base 1 through the clamping structure 2 in advance, and then drives the guide frame 6 and the puncture column 7 to move upward through the lifting structure. At this time, the guide frame 6 can move on the sliding guide rod 5. When the guide frame 6 drives the puncture column 7 to move to the appropriate height, the lifting structure stops driving the guide frame 6 to move upward, and then the guide frame 6 drives the puncture column 7 to move downward at the same time. The weight of the puncture column 7 The weight of the guide frame 6 is greater than that of the guide frame 6, which can ensure that the puncture column 7 is in contact with the guide frame 6 during the falling process, ensuring that the guide frame 6 and the puncture column 7 have the same falling speed. When the acoustic sensor 64 detects the sound of the puncture column 7 hitting the helmet, the distance sensor 66 detects whether the height of the guide frame 6 reaches the preset value. When the distance sensor 66 detects that the height of the guide frame 6 reaches the preset value, the distance sensor 66 transmits a signal to the control end of the clamping structure 8. At this time, the clamping structure 8 can drive the guide frame 6 to be fixed on the sliding guide rod 5, and then the annular electromagnet 63 works. The annular electromagnet 63 can generate a repulsive force on the magnetic tube 72, which can avoid the puncture column 7 from hitting the helmet for the second time.

[0036] Example 2: Please refer to Figure 1-4 As shown in , 6 and 7, based on the embodiment one, the present invention provides a technical solution. Different from the embodiment one, the pressure sensor 61 in this embodiment can detect the elasticity of the helmet through the eardrum 67, so that the elastic effect of the helmet can also be detected during the puncture test.

[0037] The sliding guide rod 5 and the protective base 1 are vertically distributed, the clamping structure 8 and the sliding guide rod 5 are arranged opposite to each other, and the detection ends of the acoustic sensor 64 and the distance sensor 66 are opposite to the clamping structure 2;

[0038] The sliding guide rod 5 and the protective base 1 are distributed vertically, so that when the guide frame 6 slides on the sliding guide rod 5, the sliding direction of the guide frame 6 and the puncture column 7 is perpendicular to the clamping structure 2. At the same time, it can also ensure that the detection ends of the acoustic sensor 64 and the distance sensor 66 are perpendicular to the clamping structure 2. The clamping structure 2 can be selected as the structure for clamping the helmet in the existing helmet puncture test device on the market. The clamping structure 2 includes a hydraulic clamping chuck and a clamping rod connected to the clamping end of the hydraulic clamping chuck. During actual use, the hydraulic clamping chuck drives the clamping rod to clamp the test helmet, which can facilitate the puncture column 7 to stably perform a puncture test on the test helmet. The role played in this document is to drive the helmet to be firmly distributed on the protective base 1.

[0039] The puncture column 7 is a columnar structure, and an impact head 71 is provided at the upper end of the puncture column 7. The portion of the guide frame 6 opposite to the impact head 71 is fixedly connected to the eardrum 67.

[0040] The eardrum 67 is a cavity structure made of a flexible material. An opening is provided at the top of the eardrum 67. When the upper end of the impact head 71 collides with the eardrum 67, the pressure inside the eardrum 67 can be increased.

[0041] A pressure sensor 61 is fixedly connected to the guide frame 6. The detection end of the pressure sensor 61 is inserted into the interior of the eardrum 67. The eardrum 67 is a hollow cavity structure.

[0042] When the upper end of the impact head 71 collides with the eardrum 67, the pressure inside the eardrum 67 can be increased. At this time, the detection end of the pressure sensor 61 can detect the impact force of the impact head 71 on the eardrum 67, and then infer the repulsive force transmitted by the helmet to the puncture column 7, which is convenient for subsequent staff to calculate the elasticity of the helmet.

[0043] Example 2: Please refer to Figure 1-4 As shown in Figures 6 and 7, based on the first embodiment, the present invention provides a technical solution. Different from the first embodiment, the annular electromagnet 63 in this embodiment can drive the puncture column 7 to move upward through the magnetic tube 72, thereby facilitating the puncture column 7 to perform a puncture test on the helmet at a suitable height.

[0044] The guide frame 6 is fixedly connected to the periphery of the annular electromagnet 63 with support columns 65. The support columns 65 are evenly spaced around the annular electromagnet 63, and the upper ends of the support columns 65 are fixedly connected to elastic columns.

[0045] The support column 65 can protect the annular electromagnet 63 and prevent the puncture column 7 from hitting the annular electromagnet 63 when the acoustic sensor 64 and the distance sensor 66 are damaged, thereby preventing the annular electromagnet 63 from being damaged by the puncture column 7.

[0046] The lifting structure includes a lifting motor 4 fixedly connected to the top plate 9. The output end of the lifting motor 4 is fixedly connected to the upper transmission wheel 31. The upper transmission wheel 31 is sleeved with a lifting belt 3. The lifting belt 3 has through holes 35 at equal intervals.

[0047] The lower transmission wheel 32 is inserted into the position opposite to the lifting belt 3 and the upper transmission wheel 31. The lower transmission wheel 32 and the upper transmission wheel 31 are fixedly connected with through teeth 34. The through teeth 34 are inserted into the lifting belt 3 through through holes 35. The lower transmission wheel 32 is rotatably connected to a support rod 33, and the support rod 33 is fixedly connected to the protective base 1.

[0048] When the upper transmission wheel 31 is used in cooperation with the lower transmission wheel 32, the lifting belt 3 can be tensioned and used between the top plate 9 and the protective base 1. When the output end of the lifting motor 4 drives the upper transmission wheel 31 in actual use, the penetrating teeth 34 on the upper transmission wheel 31 can be inserted into the penetrating hole 35 inside the lifting belt 3. With the rotation of the upper transmission wheel 31, the penetrating teeth 34 on the upper transmission wheel 31 can lift the lifting belt 3. At this time, the lifting belt 3 can also drive the lower transmission wheel 32 to rotate through the penetrating hole 35. The lifting belt 3 can drive the guide frame body 6 to move on the sliding guide rod 5, and the use height of the sliding guide rod 5 and the piercing column 7 can be changed.

[0049] The lifting belt 3 and the guide frame body 6 are fixedly connected, the lifting belt 3 and the sliding guide rod 5 are arranged in parallel, and the lifting belt 3 does not contact the top plate 9 and the protective base 1.

[0050] The lifting belt 3 and the sliding guide rod 5 are arranged in parallel, which can drive the guide frame body 6 to move on the sliding guide rod 5, and the use height of the sliding guide rod 5 and the piercing column 7 can be changed.

[0051] Embodiment three: please refer to Figure 1-8 As shown, based on the basis of embodiment one, the application provides a technical solution, which is different from embodiment one. The clamping structure 8 in the embodiment can drive the piercing column 7 to pierce the helmet at different heights for testing, and can also drive the piercing column 7 to be fixed at a suitable position through the guide frame body 6.

[0052] The guide frame body 6 is provided with an opening 62 at both ends, and the guide frame body 6 is sleeved on the sliding guide rod 5 through the opening 62. The clamping structure 8 includes a shell structure 81 fixed on both sides of the opening 62. The shell structure 81 is fixedly connected with a thrust electromagnet 83 inside.

[0053] When the shell structure 81 is fixed on the guide frame body 6, the shell structure 81 can drive the thrust electromagnet 83 to be distributed around the opening 62. Since the opening 62 is distributed at both ends of the guide frame body 6, when the guide frame body 6 is sleeved on the sliding guide rod 5 through the opening 62, the sliding direction of the guide frame body 6 can be guided by the sliding guide rod 5, and the sliding direction of the piercing column 7 can be limited and moved.

[0054] The inside of the shell structure 81 is slidably connected with an extrusion block 82. One end of the extrusion block 82 close to the thrust electromagnet 83 is fixedly connected with a pushing magnetic block 84. The magnetic poles of the pushing magnetic block 84 and the thrust electromagnet 83 repel each other.

[0055] The squeezing block 82 can slide on the shell structure 81. It should be noted that the pushing magnetic block 84 cannot be separated from the shell structure 81. Since the magnetic poles of the pushing magnetic block 84 and the magnetic poles of the thrust electromagnet 83 repel each other, the control end of the thrust electromagnet 83 is connected to the external PLC controller. The PLC controller has a control program built in it. The staff can control the thrust electromagnet 83 to work through the control program inside the PLC controller. When the thrust electromagnet 83 is working, the thrust electromagnet 83 will drive the pushing magnetic block 84 to move. At this time, the squeezing block 82 can extend from the inside of the shell structure 81, so that the squeezing block 82 can be abutted against the sliding guide rod 5, and then the guide frame 6 can be fixed to different positions on the sliding guide rod 5, so that the guide frame 6 can drive the puncture column 7 to perform puncture tests on the helmet from different heights.

[0056] Working principle: When the helmet puncture tester is actually used, the output end of the lifting motor 4 drives the upper transmission wheel 31 to rotate, and the through-teeth 34 on the upper transmission wheel 31 can be inserted into the through-hole 35 inside the lifting belt 3. As the upper transmission wheel 31 rotates, the through-teeth 34 on the upper transmission wheel 31 can pull the lifting belt 3. At this time, the lifting belt 3 can also drive the lower transmission wheel 32 to rotate through the through-hole 35, so that the lifting belt 3 can drive the guide frame 6 to move on the sliding guide rod 5, thereby changing the use height of the sliding guide rod 5 and the puncture column 7.

[0057] When the guide frame 6 is lowered, the puncture column 7 is pressed against the support column 65, and the guide frame 6 is lifted and lowered, and the puncture column 7 is pressed against the support column 65. When the guide frame 6 is lifted to the appropriate position, the lifting motor 4 stops working. At this time, the puncture column 7 will drive the guide frame 6 to move downward through the support column 65. During this process, the guide frame 6 will slide on the sliding guide rod 5 through the notch 62, and the sliding guide rod 5 can play a role of directional sliding for the guide frame 6. Because the notch 62 on the guide frame 6 will rub on the sliding guide rod 5, the guide frame 6 also needs to drive the upper transmission wheel 31 and the lower transmission wheel 32 to rotate through the lifting belt 3, which will cause the actual falling speed of the guide frame 6 to be less than the falling speed of the puncture column 7. When the puncture column 7 is pressed against the support column 65, it can be achieved that the guide frame 6 is squeezed against the guide frame 6 during the falling process, so that the sliding speed of the puncture column 7 and the guide frame 6 is the same;

[0058] When the acoustic sensor 64 detects the sound of the puncture rod 7 hitting the helmet, the puncture rod 7 can drive the impact head 71 to impact the eardrum 67 under the elastic repulsive force of the helmet, thereby increasing the pressure inside the eardrum 67. At this time, the detection end of the pressure sensor 61 can detect the impact force of the impact head 71 on the eardrum 67, and then infer the repulsive force transmitted by the helmet to the puncture rod 7, which is convenient for subsequent staff to calculate the elasticity of the helmet.

[0059] The acoustic sensor 64 transmits a control signal to the distance sensor 66, and the distance sensor 66 detects whether the height of the guide frame 6 reaches the preset value. When the distance sensor 66 detects that the height of the guide frame 6 reaches the preset value, the distance sensor 66 transmits a signal to the controller of the clamping structure 8. At this time, the controller of the clamping structure 8 controls the clamping structure 8 to drive the guide frame 6 to be fixed on the sliding guide rod 5. The controller of the clamping structure 8 is an external PLC controller, and a control program is embedded in the PLC controller. The staff can control the thrust electromagnet 83 in the clamping structure 8 to work through the control program inside the PLC controller, and then the annular electromagnet 63 works. The annular electromagnet 63 can generate a repulsive force on the magnetic tube 72, which can prevent the puncture column 7 from hitting the helmet for the second time.

[0060] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. Various changes and improvements are possible without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the invention as claimed.

Claims

1. A puncture tester for helmet processing, comprising a guide frame (6) and sliding guide rods (5) plugged into both sides of the guide frame (6), characterized in that: The guide frame (6) is provided with a puncture column (7), a protective base (1) is provided below the guide frame (6), a clamping structure (2) is provided on the protective base (1), the puncture column (7) is always opposite to the clamping structure (2), the sliding guide rod (5) is fixedly connected to the protective base (1), the guide frame (6) is connected to a lifting structure, the upper part of the puncture column (7) is fixedly connected to a magnetic tube (72), the relative position of the guide frame (6) and the magnetic tube (72) is fixedly connected to a ring-shaped electromagnet (63), the position of the guide frame (6) close to the sliding guide rod (5) is provided with a clamping structure (8), and the lower part of the guide frame (6) is fixedly connected to an acoustic sensor (64) and a distance sensor (66); The guide frame (6) is provided with notches (62) at both ends, and the guide frame (6) is sleeved on the sliding guide rod (5) through the notches (62). The clamping structure (8) includes a shell structure (81) relatively fixed on both sides of the notch (62), a thrust electromagnet (83) is fixedly connected inside the shell structure (81), and an extrusion block (82) is slidably connected inside the shell structure (81). The extrusion block (82) is fixedly connected to an end of the extrusion block (82) close to the thrust electromagnet (83) with a pushing magnetic block (84), and the magnetic poles of the pushing magnetic block (84) and the magnetic poles of the thrust electromagnet (83) repel each other. When the sound sensor (64) detects the sound of the puncture column (7) hitting the helmet, the distance sensor (66) detects whether the height of the guide frame (6) reaches the preset value. When the distance sensor (66) detects that the height of the guide frame (6) reaches the preset value, the distance sensor (66) transmits a signal to the control end of the clamping structure (8). At this time, the clamping structure (8) can drive the guide frame (6) to be fixed on the sliding guide rod (5), and then the annular electromagnet (63) works. The annular electromagnet (63) can generate a repulsive force on the magnetic tube (72), which can prevent the puncture column (7) from hitting the helmet for the second time.

2. A puncture tester for helmet processing according to claim 1, characterized in that: The sliding guide rod (5) and the protective base (1) are vertically distributed, the clamping structure (8) and the sliding guide rod (5) are arranged relative to each other, and the detection ends of the acoustic sensor (64) and the distance sensor (66) are relative to the clamping structure (2).

3. A puncture tester for helmet processing according to claim 1, characterized in that: The puncture column (7) is a columnar structure. An impact head (71) is provided at the upper end of the puncture column (7). The portion of the guide frame (6) opposite to the impact head (71) is fixedly connected to the eardrum (67).

4. A puncture tester for helmet processing according to claim 3, characterized in that: A pressure sensor (61) is fixedly connected to the guide frame (6), and a detection end of the pressure sensor (61) is inserted into the interior of the eardrum (67). The eardrum (67) is a hollow cavity structure.

5. The helmet processing puncture tester according to claim 1, characterized in that: The guide frame (6) is fixedly connected to a support column (65) located on the periphery of the annular electromagnet (63). The support columns (65) are distributed around the annular electromagnet (63) at equal intervals, and the upper ends of the support columns (65) are fixedly connected to elastic columns.

6. The helmet processing puncture tester according to claim 1, characterized in that: The lifting structure includes a lifting motor (4) fixedly connected to the top plate (9), the output end of the lifting motor (4) is fixedly connected to an upper transmission wheel (31), a lifting belt (3) is sleeved on the upper transmission wheel (31), and through holes (35) are opened on the lifting belt (3) at equal intervals.

7. A puncture tester for helmet processing according to claim 6, characterized in that: A lower transmission wheel (32) is inserted into the position where the lifting belt (3) and the upper transmission wheel (31) are opposite to each other, and a through tooth (34) is fixedly connected to both the lower transmission wheel (32) and the upper transmission wheel (31), and the through tooth (34) is inserted into the lifting belt (3) through a through hole (35). A support rod (33) is rotatably connected to the lower transmission wheel (32), and the support rod (33) is fixedly connected to the protective base (1).

8. The helmet processing puncture tester according to claim 6, characterized in that: The lifting belt (3) is fixedly connected to the guide frame (6), the lifting belt (3) and the sliding guide rod (5) are arranged in parallel, and the lifting belt (3) does not contact the top plate (9) or the protective base (1).

Images