Motorcycle helmet strength detection device

Abstract

A motorcycle helmet strength detection device disclosed by the present invention comprises a base and a top frame, the outer side of the base is fixedly connected with a protective blocking net, the two sides of the top of the base are fixedly connected with side frames, the bottom end of the interior of the top frame is fixedly connected with a winding mechanism, and a fixed frame is fixedly connected to the bottom end of the interior of the top frame. When the driving gear rotates forwards, the limiting tooth base rebounds back and forth along the inner side of the sliding base, after the driving gear stops, the limiting tooth base is clamped into teeth on one side of the driving gear so that the teeth can not rotate reversely, and when the driving gear needs to rotate reversely, the electromagnet is started to enable the limiting tooth base to retract rapidly so that the driving gear can rotate reversely normally; furthermore, when the winding rod drives the driving gear to rotate, an internal thread sliding sleeve in threaded connection with the reciprocating lead screw reciprocates along the guide rod, and the rope penetrates through the interior of the traction frame and then is wound on the outer side wall of the winding rod, so that the traction frame is driven to reciprocate along with the internal thread sliding sleeve, and the rope is wound more uniformly.

Description

Technical Field

[0001] The present invention relates to the technical field of motorcycle helmet strength detection devices, in particular to a motorcycle helmet strength detection device. Background Art

[0002] Motorcycles are a common means of transportation. To ensure the safety of drivers, they are often required to wear motorcycle helmets. To ensure the quality and safety of motorcycle helmets, a series of safety tests are often carried out after the production of motorcycle helmets. Among various tests, the strength test of motorcycle helmets is the most intuitive way to test their quality. For this reason, a dedicated motorcycle helmet strength test device is often used during motorcycle helmet testing. To this end, the patent specification with publication number CN120028165A discloses a helmet strength detection device, including a base plate, a support frame connected to one side of the upper end of the base plate, an impact assembly connected to the upper part of one side of the support frame, the impact assembly can fix the impact hammer and guide the impact hammer when it falls, the middle part of the upper end of the base plate is connected to a supporting platform, the middle part of the upper end of the supporting platform is connected to an arc-shaped guide rail, the upper end of the arc-shaped guide rail is slidably connected to a slider, the upper end of the slider is connected to a fixing assembly, the fixing assembly is convenient for fixing the helmet, the present invention is convenient for testing different parts of the helmet, and meets various testing needs. At the same time, the impact hammer can be vertically guided to ensure that the impact hammer falls along the set vertical path, and the impact hammer can be quickly reset after the test is completed, reducing the test interval time. The above-mentioned helmet strength detection device has a good detection effect when used, but there are still some problems: Since the detection impact hammer is raised and lowered by winding the connecting rope, and the winding of the connecting rope is prone to disorder during this process, the stability of the impact hammer is affected during the early winding process, which in turn affects the impact effect of the impact hammer. Summary of the Invention

[0003] The purpose of the present invention is to provide a motorcycle helmet strength testing device to solve the defect that the winding connecting rope of the existing motorcycle helmet strength testing device is too messy.

[0004] The cam is secured to the chassis and has a cam face, and the cam face has a hook portion for securing the chassis to the chassis.

[0005] During use, the motorcycle helmet to be tested is firmly installed on the outside of the mounting base, and then the device is started through the electrical control box, so that the servo motor starts and drives the winding rod to rotate and drives the rope to reel, so that the mobile frame drives the impact hammer to rise. When it rises to the specified position, the servo motor is turned off to make the impact hammer hover. In order to avoid excessive friction during the lifting process, which in turn affects the impact strength of the impact hammer, the mobile frame and the impact hammer are designed to be electromagnetically adsorbed. The magnetic start and stop of the mobile frame and the impact hammer are controlled by the electrical control box. When the impact hammer hovers, the magnetic attraction is turned off to make the impact hammer fall quickly and impact the motorcycle helmet installed on the mounting base, so as to perform strength testing on the helmet.

[0006] The transmission mechanism is that one end is hinged on the cam frame, and the other end is hinged on the cam frame, is fixed with the cam frame, and the other end is hinged on the cam frame.

[0007] Preferably, the fixing frame and the winding rod are in a rotating structure, and the driving gear and the limiting tooth seat are in a gear meshing structure, so that the driving gear cannot be reversed normally.

[0008] Preferably, the reciprocating screw rod and the internal threaded sleeve are in a threaded connection structure, and the guide rod and the internal threaded sleeve are in a sliding structure, so that the traction frame can perform smooth reciprocating movement.

[0009] Preferably, the reciprocating screw and the fixed frame are in a rotating structure, and the sliding seat and the limiting tooth seat are in a sliding structure, so that the limiting tooth seat can rebound stably according to needs.

[0010] Preferably, the angle adjustment structure includes a base, a top seat, a mounting plate, a support plate, a sliding rod, an adjusting screw, a threaded block, a slider, a connecting rod, a hinged rod and a push-pull seat, wherein the base is fixedly connected to the middle position of the top end of the base, a top seat is provided above the base, a mounting plate is provided above the top of the top seat, the bottom end of the base is fixedly connected to the support plate, both sides of one end of the support plate are fixedly connected to the sliding rod, the middle position of one end of the support plate is rotatably connected to the adjusting screw, the outer side of the adjusting screw is threadedly connected to the threaded block, the outer side of the sliding rod is slidably connected to the slider, both sides of the threaded block are fixedly connected to the connecting rod, the top end of the slider is hinged with the hinged rod, one end of the hinged rod is hinged with the push-pull seat, and the top of the push-pull seat is fixedly connected to the bottom end of the top seat.

[0011] Preferably, the support plates are symmetrically distributed at the bottom ends of the base and the top seat, and the mounting plate and the mounting seat are perpendicular to each other, so that the angle adjustment of the helmet is more stable.

[0012] Preferably, the adjusting screw and the threaded block are in a threaded connection structure, and the sliding rod and the slider are in a sliding structure, so that the movement of the threaded block is more stable.

[0013] Preferably, one end of the support plate, one end of the inner side wall of the base and two ends of the adjusting screw are in a rotating structure, so that the adjusting screw can be rotated and the threaded block can be moved.

[0014] Compared with the prior art, the present invention has the following advantages: the first pulley drives the second pulley to rotate by driving the servo motor, thereby causing the internal threaded sleeve to reciprocate along the outer thread of the reciprocating screw, thereby causing the rope passing through the inner side of the traction frame to be evenly reeled on the outer side of the reeling rod; at the same time, by rotating a plurality of adjusting screws, a plurality of hinged rods are driven to push the top seat or the mounting plate to tilt according to needs, thereby adjusting various angles of the helmet; 1. When the driving gear rotates forward, the limit tooth seat rebounds back and forth along the inner side of the slide. When the driving gear stops, the limit tooth seat is stuck in the teeth on one side of the driving gear, preventing it from reversing. When the driving gear needs to reverse, the electromagnet is activated to quickly retract the limit tooth seat, allowing the driving gear to reverse normally. Furthermore, when the winding rod drives the driving gear to rotate, the internal threaded sleeve threadedly connected to the reciprocating screw rod will reciprocate along the guide rod. Since the rope passes through the interior of the traction frame and then winds around the outer wall of the winding rod, the internal threaded sleeve drives the traction frame to reciprocate, thereby making the rope winding more uniform. 2. When the adjusting screw on one side of the base is rotated, the front and rear horizontal angles of the top seat can be adjusted. When the adjusting screw on one side of the top seat is rotated, the left and right horizontal angles of the mounting plate can be adjusted. In this way, the strength of the helmet installed at the mounting seat can be tested at various angles according to needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of a three-dimensional partial cross-sectional structure of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the winding mechanism of the present invention; Figure 4 It is a schematic diagram of the three-dimensional partial structure of the winding mechanism of the present invention; Figure 5 It is a schematic diagram of the three-dimensional partial structure of the winding mechanism of the present invention; Figure 6 This is a schematic diagram of the three-dimensional disassembly structure of the angle adjustment structure of the present invention; Figure 7 It is a schematic diagram of the three-dimensional local structure of the angle adjustment structure of the present invention.

[0016] In the figure: 1, base; 2, protective screen; 3, side frame; 4, mobile frame; 5, rope; 6, top frame; 7, impact hammer; 8, electric control box; 9, rewinding mechanism; 901, fixed frame; 902, servo motor; 903, rewinding rod; 904, baffle; 905, driving gear; 906, first pulley; 907, second pulley; 908, reciprocating screw; 909, guide rod; 910, internal threaded sleeve; 911, traction Guide frame; 912, electromagnet; 913, slide seat; 914, spring; 915, limit tooth seat; 10, angle adjustment structure; 1001, base; 1002, top seat; 1003, mounting plate; 1004, support plate; 1005, slide rod; 1006, adjusting screw; 1007, threaded block; 1008, slider; 1009, connecting rod; 1010, hinged rod; 1011, push-pull seat; 11, mounting seat. DETAILED DESCRIPTION

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] See also Figure 1-Figure 7 The present invention provides a motorcycle helmet strength testing device, comprising a base 1 and a top frame 6. A protective net 2 is fixedly connected to the outside of the base 1. Side frames 3 are fixedly connected to both sides of the top of the base 1. A mobile frame 4 is slidably connected to the inside of the side frame 3. A rope 5 is provided above the mobile frame 4. The top of the side frame 3 is fixedly connected to the top frame 6. An impact hammer 7 is provided below the mobile frame 4. An electric control box 8 is fixedly connected to one side of the side frame 3. A mounting seat 11 is provided below the impact hammer 7. A winding mechanism 9 is fixedly connected to the bottom end of the top frame 6. The winding mechanism 9 includes a fixed frame 901, a servo motor 902, and a winding rod 901. 03, baffle 904, driving gear 905, first pulley 906, second pulley 907, reciprocating screw 908, guide rod 909, internal thread sleeve 910, traction frame 911, electromagnet 912, slide 913, spring 914 and limit tooth seat 915, fixed frame 901 is fixedly connected to the bottom end of the top frame 6, one side of the fixed frame 901 is fixedly connected to the servo motor 902, one side of the servo motor 902 passes through the inner side of the fixed frame 901 and is fixedly connected to one side of the winding rod 903, both sides of the outer wall of the winding rod 903 are fixedly connected with baffles 904, the winding rod 903 The other side of the guide rod 909 passes through the other side of the fixed frame 901 and is fixedly connected to one side of the driving gear 905. The other side of the driving gear 905 is fixedly connected to the first pulley 906. The lower part of the other side of the fixed frame 901 is rotatably connected to the second pulley 907. One side of the second pulley 907 passes through the inner side of the fixed frame 901 and is fixedly connected to one side of the reciprocating screw rod 908. A guide rod 909 is provided above the reciprocating screw rod 908. The outer side of the guide rod 909 is wrapped with an internal threaded sleeve 910. One end of the internal threaded sleeve 910 is fixedly connected to the traction frame 911. One end of the other side of the fixed frame 901 is fixed It is connected to an electromagnet 912, one end of the electromagnet 912 is fixedly connected to a slide 913, one end of the slide 913 is fixedly connected to a spring 914, and the other end of the slide 913 is slidably connected to a limit tooth seat 915, the fixed frame 901 and the winding rod 903 are in a rotating structure, the driving gear 905 and the limit tooth seat 915 are in a gear meshing structure, the reciprocating screw rod 908 and the internal threaded sleeve 910 are in a threaded connection structure, the guide rod 909 and the internal threaded sleeve 910 are in a sliding structure, the reciprocating screw rod 908 and the fixed frame 901 are in a rotating structure, and the slide 913 and the limit tooth seat 915 are in a sliding structure.

[0019] Refer to the attached Figure 2 、 Figure 3 、 Figure 4 and Figure 5 When the servo motor 902 is in operation, the rope 5 is reeled in by the electric control box 8. When the servo motor 902 is running forward, the rope 5 is reeled in by the reeling rod 903, so that the movable frame 4 drives the impact hammer 7 to rise. When the servo motor 902 is reversed, the movable frame 4 drives the impact hammer 7 to fall. In this process, in order to prevent the impact hammer 7 from hovering when the servo motor 902 stops, causing the reeling rod 903 to reverse and thus affecting the height accuracy of the impact hammer 7, a driving gear 905 is fixed at one end of the reeling rod 903. When the reeling rod 903 drives the driving gear 905 to rotate forward, the limiting tooth seat 915 rebounds back and forth along the inner side of the slide seat 913 under the elastic force of the spring 914. When the servo motor 902 stops, the limiting tooth seat 915 is stuck in the teeth on one side of the driving gear 905, so that the driving gear 905 cannot reverse, so that the impact hammer 7 remains stable when hovering, and the electromagnet is started when the driving gear 905 needs to reverse. When the rope 5 passes through the interior of the traction frame 911 and then wraps around the outer wall of the winding rod 903, the inner threaded sleeve 910 drives the traction frame 911 to move back and forth, so that the rope 5 is wound more evenly.

[0020] An angle adjustment structure 10 is fixedly connected to the middle position of the top of the base 1. The angle adjustment structure 10 includes a base 1001, a top seat 1002, a mounting plate 1003, a support plate 1004, a slide bar 1005, an adjusting screw 1006, a threaded block 1007, a slider 1008, a connecting rod 1009, a hinged rod 1010 and a push-pull seat 1011. The base 1001 is fixedly connected to the middle position of the top of the base 1. A top seat 1002 is provided above the base 1001. A mounting plate 1003 is provided above the top seat 1002. The bottom end of the base 1001 is fixedly connected to the support plate 1004. Both sides of one end of the support plate 1004 are fixedly connected to the slide bar 1005. The middle position of one end of the support plate 1004 is rotatably connected to the adjusting screw 1006. The outer side of 006 is connected to a threaded block 1007 through a threaded connection, and the outer side of the slide rod 1005 is slidably connected to a slider 1008. Both sides of the threaded block 1007 are fixedly connected to a connecting rod 1009, and the top of the slider 1008 is hinged to a hinged rod 1010, and one end of the hinged rod 1010 is hinged to a push-pull seat 1011. The top of the push-pull seat 1011 is fixedly connected to the bottom end of the top seat 1002, and the support plates 1004 are symmetrically distributed at the bottom ends inside the base 1001 and the top seat 1002. The mounting plate 1003 and the mounting seat 11 are perpendicular to each other, the adjusting screw 1006 and the threaded block 1007 are in a threaded connection structure, the slide rod 1005 and the slider 1008 are in a sliding structure, and one end of the support plate 1004, one end of the inner wall of the base 1001 and the two ends of the adjusting screw 1006 are in a rotating structure.

[0021] Refer to the attached Figure 2 、 Figure 6 and Figure 7 , since symmetrical adjusting screws 1006 are installed inside the base 1001 and the top seat 1002, and the adjusting screws 1006 inside the base 1001 and the top seat 1002 are staggered in opposite directions, when the adjusting screw 1006 on one side of the base 1001 is rotated, the threaded block 1007 threadedly connected to the adjusting screw 1006 will drive the slider 1008 to move through the connecting rod 1009. By controlling the forward and reverse rotation of the adjusting screw 1006, the slider 1008 can push and pull the hinge rod 1010, so that the push-pull seat 1011 pushes and pulls one end of the top seat 1002, so that the top seat 1002 can be adjusted to the front and rear horizontal angles. When the adjusting screw 1006 on one side of the top seat 1002 is rotated, the mounting plate 1003 can be adjusted to the left and right horizontal angles, so that the helmet installed at the mounting seat 11 can be tested for strength at various angles according to needs.

[0022] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A motorcycle helmet strength testing device, comprising a base (1) and a top frame (6); Its characteristics are: The outer side of the base (1) is fixedly connected to a protective screen (2), both sides of the top of the base (1) are fixedly connected to side frames (3), and the middle position of the top of the base (1) is fixedly connected to an angle adjustment structure (10); The inner side of the side frame (3) is slidably connected to a movable frame (4), a rope (5) is provided above the movable frame (4), the top of the side frame (3) is fixedly connected to a top frame (6), an impact hammer (7) is provided below the movable frame (4), one side of the side frame (3) is fixedly connected to an electric control box (8), and a mounting seat (11) is provided below the impact hammer (7); The bottom end of the top frame (6) is fixedly connected to a winding mechanism (9), and the winding mechanism (9) comprises a fixed frame (901), a servo motor (902), a winding rod (903), a baffle (904), a driving gear (905), a first pulley (906), a second pulley (907), a reciprocating screw (908), a guide rod (909), an internal threaded sleeve (910), a traction frame (911), an electromagnet (912), a slide seat (913), a spring (914) and a limit tooth seat (915), and the fixed frame (901) is fixedly connected to the bottom end of the top frame (6).

2. A motorcycle helmet strength testing device according to claim 1, characterized in that: One side of the fixed frame (901) is fixedly connected to a servo motor (902), one side of the servo motor (902) passes through the inner side of the fixed frame (901) and is fixedly connected to one side of the winding rod (903), both sides of the outer wall of the winding rod (903) are fixedly connected to baffles (904), the other side of the winding rod (903) passes through the other side of the fixed frame (901) and is fixedly connected to one side of the driving gear (905), the other side of the driving gear (905) is fixedly connected to a first pulley (906), the lower side of the other side of the fixed frame (901) is rotatably connected to a second pulley (907), one side of the second pulley (907) The side passes through the inner side of the fixed frame (901) and is fixedly connected to one side of the reciprocating screw rod (908), a guide rod (909) is provided above the reciprocating screw rod (908), the outer side of the guide rod (909) is wrapped with an internal thread sleeve (910), one end of the internal thread sleeve (910) is fixedly connected to the traction frame (911), one end of the other side of the fixed frame (901) is fixedly connected to the electromagnet (912), one end of the electromagnet (912) is fixedly connected to the slide seat (913), one end of the inside of the slide seat (913) is fixedly connected to the spring (914), and the other end of the inside of the slide seat (913) is slidably connected to the limited tooth seat (915).

3. A motorcycle helmet strength testing device according to claim 2, characterized in that: The fixing frame (901) and the winding rod (903) are in a rotating structure, and the driving gear (905) and the limiting tooth seat (915) are in a gear meshing structure.

4. The motorcycle helmet strength testing device according to claim 1, characterized in that: The reciprocating screw rod (908) and the internal threaded sleeve (910) are in a threaded connection structure, and the guide rod (909) and the internal threaded sleeve (910) are in a sliding structure.

5. The motorcycle helmet strength testing device according to claim 2, characterized in that: The reciprocating screw rod (908) and the fixed frame (901) are in a rotating structure, and the sliding seat (913) and the limiting tooth seat (915) are in a sliding structure.

6. The motorcycle helmet strength testing device according to claim 1, characterized in that: The angle adjustment structure (10) comprises a base (1001), a top seat (1002), a mounting plate (1003), a support plate (1004), a slide rod (1005), an adjustment screw (1006), a threaded block (1007), a slider (1008), a connecting rod (1009), a hinge rod (1010) and a push-pull seat (1011), wherein the base (1001) is fixedly connected to the middle position of the top of the base (1), a top seat (1002) is provided above the base (1001), a mounting plate (1003) is provided above the top seat (1002), a bottom end of the base (1001) is fixedly connected to the support plate (1004), and the support Both sides of one end of the support plate (1004) are fixedly connected to a sliding rod (1005), an adjusting screw (1006) is rotatably connected to the middle position of one end of the support plate (1004), the outer side of the adjusting screw (1006) is threadedly connected to a threaded block (1007), the outer side of the sliding rod (1005) is slidably connected to a slider (1008), both sides of the threaded block (1007) are fixedly connected to a connecting rod (1009), the top end of the slider (1008) is hinged to a hinged rod (1010), one end of the hinged rod (1010) is hinged to a push-pull seat (1011), and the top end of the push-pull seat (1011) is fixedly connected to the bottom end of the top seat (1002).

7. The motorcycle helmet strength testing device according to claim 6, characterized in that: The support plates (1004) are symmetrically distributed at the bottom ends of the base (1001) and the top seat (1002), and the mounting plate (1003) and the mounting seat (11) are perpendicular to each other.

8. The motorcycle helmet strength testing device according to claim 6, characterized in that: The adjusting screw (1006) and the threaded block (1007) are in a threaded connection structure, and the sliding rod (1005) and the slider (1008) are in a sliding structure.

9. The motorcycle helmet strength testing device according to claim 6, characterized in that: One end of the support plate (1004), one end of the inner wall of the base (1001) and two ends of the adjusting screw (1006) are in a rotating structure.

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