A helmet lens detection device

Abstract

The present invention relates to the technical field of material testing, and discloses a helmet lens detection device, including a mounting frame. A second motor is fixedly connected to the top of the mounting frame. The output end of the second motor is fixedly connected to a rope roller. A pulling rope is connected to the outer wall of the rope roller. One end of the pulling rope is connected to a tapered block. One end of the hydraulic cylinder is rotatably connected to the bottom of the inner wall of the mounting frame. A clamping and fixing mechanism is installed at the top of the support arm. The clamping and fixing mechanism is used for clamping the helmet lens and can be used to detect the toughness of the helmet lens and cooperate with the detection of impact resistance. In the present invention, it can adapt to helmet lenses of different sizes, can realize the rapid installation and disassembly of helmet lenses, realize multi-point testing and testing at different speeds, and can simulate the impact resistance of helmet lenses under different environments, solving the problem of the single function of the existing testing methods.

Description

Technical Field

[0001] The present invention relates to the technical field of material testing, and particularly to a helmet lens detection device. Background Art

[0002] Currently, during the detection process of helmet lenses, the commonly used method is to first install the helmet lens on a fixed base, and then use a falling weight to impact it to evaluate its impact resistance and anti-collision ability. However, this testing method has certain limitations because each test can only evaluate a specific position of the helmet lens, resulting in relatively single functions.

[0003] The limitations of this testing method are mainly manifested in the following aspects:

[0004] Single test point: Since the test can only be carried out on a specific position of the helmet lens, it is impossible to comprehensively evaluate the overall performance of the helmet lens. This may lead to the omission of other possible weaknesses or defects.

[0005] Localized evaluation: The test results may not fully reflect various situations that the helmet lens may encounter during actual use. Other parts of the helmet lens may have different performance under different conditions, and these situations cannot be fully considered under a single test point.

[0006] Insufficient to simulate the real environment: The helmet lens may face various complex environments and conditions during use, such as impacts at different angles, collisions at different speeds, etc. The single test point method may not be able to fully simulate these situations, thus affecting the accuracy and reliability of the test results. Summary of the Invention

[0007] To make up for the above deficiencies, the present invention provides a helmet lens detection device, aiming to improve the problem of relatively single functions of the existing testing method, and to achieve multi-point testing and testing at different speeds to ensure that the safety and performance of the helmet lens meet relevant standards and requirements.

[0008] To achieve the above object, the present invention provides the following technical solution: A helmet lens detection device, including an installation frame, a second motor is fixedly connected to the top of the installation frame, a rope roller is fixedly connected to the output end of the second motor, a pulling rope is connected to the outer wall of the rope roller, and one end of the pulling rope is connected to a conical block;

[0009] A support base is fixedly connected to the inner bottom of the installation frame. An adjustment base is rotatably connected to the middle of the support base. A support arm is fixedly connected to the top of the adjustment base. One end of the bottom of the support arm is rotatably connected to a hydraulic cylinder. One end of the hydraulic cylinder is rotatably connected to the inner bottom of the installation frame. A clamping and fixing mechanism is installed on the top of the support arm. The clamping and fixing mechanism is used for clamping the helmet lens and can be used to detect the toughness of the helmet lens and cooperate with the detection of impact resistance.

[0010] Preferably, a rope position hole is provided at the top of the installation frame, and the pull rope is located in the rope position hole.

[0011] Preferably, guide slide bars are fixedly connected to both sides of the middle of the installation frame. A slide plate is slidably connected to the outer wall of the guide slide bar. Adjacent sides of the two slide plates are respectively fixedly connected to both sides of a conical block. A U-shaped slide seat is arranged above the conical block. The outer side of the pull rope penetrates through the middle of the U-shaped slide seat. Fixed magnetic rings are fixedly connected to both ends of the top of the U-shaped slide seat. Electromagnetic rings are fixedly connected to both sides of the inner top of the installation frame. Weight installation screw rods are connected to both sides of the middle of the U-shaped slide seat, and weight blocks are sleeved on the outer sides of the weight installation screw rods.

[0012] Preferably, a chute is arranged in the middle of the support arm. Two threaded blocks are slidably connected to the inner wall of the chute. A threaded rod is rotatably connected to the middle of the support arm. The inside of the threaded block is threadedly connected to the outer wall of the threaded rod. One end of the threaded rod penetrates through the support arm and extends to be fixedly connected to a pulley a. One end of the outer wall of the support arm is fixedly connected to a first motor. The output end of the first motor is fixedly connected to a pulley b. The pulley a and the pulley b are connected by a belt.

[0013] Preferably, clamping and fixing mechanisms are installed on the tops of the two threaded blocks, and the two clamping and fixing mechanisms are symmetrically distributed about the vertical bisector of the support arm.

[0014] Preferably, a slewing bearing is installed on the top of the threaded block. The clamping and fixing mechanism includes a sleeve. The bottom of the sleeve is connected to the top of the slewing bearing. A sleeve hole is arranged inside the sleeve. One end of the inner wall of the sleeve is slidably connected to a telescopic slide rod. The telescopic slide rod is located in the sleeve hole. One end of the telescopic slide rod is fixedly connected to a second spring. One end of the second spring is fixedly connected to the other end inside the sleeve. A plurality of uniformly distributed tongue cavities are arranged at the end of the telescopic slide rod away from the sleeve. A plurality of telescopic tongues are connected to the end of the telescopic slide rod away from the sleeve.

[0015] Preferably, one end of the telescopic tongue is slidably connected in the tongue cavity, the other end of the telescopic tongue is provided with an inclined surface, and the inclined surface is located on the side away from the sleeve. One end of the telescopic tongue away from the inclined surface is fixedly connected in the telescopic slide rod through a first spring, and a pull ring is fixedly connected to the end face of the telescopic slide rod away from the sleeve.

[0016] Preferably, a U-shaped groove is provided in the middle of the U-shaped slide seat, and the counterweight mounting screw is located in the U-shaped groove.

[0017] The present invention has the following beneficial effects:

[0018] 1. In the present invention, by driving the rope roller to rotate through the second motor, the pull rope can be stretched, and then the conical block can be lifted to different positions and then released. The falling of the conical block generates impact forces of different magnitudes. The clamping and fixing mechanism is used to clamp the helmet lens, and the hydraulic cylinder is used to expand and contract, and then the support arm is pushed to rotate around the support seat, so as to adjust the angle of the support arm, realizing multi-angle adjustment of the helmet lens, and the impact resistance of different positions of the helmet lens can be tested, realizing multi-point testing and simulating tests at different speeds.

[0019] 2. In the present invention, the conical block can operate independently. When the electromagnetic ring is powered off, the fixed magnetic ring can be released. At this time, the U-shaped slide seat and the fixed magnetic ring fall together under the action of gravity, lift the conical block to different positions and then release the conical block, so that the U-shaped slide seat and the conical block fall synchronously, thereby realizing the control of the impact force magnitude and facilitating the detection of the helmet lens in different environments.

[0020] 3. In the present invention, the two clamping and fixing mechanisms can approach or move away from each other simultaneously, which can adapt to helmet lenses of different sizes. The clamping and fixing mechanism can realize quick installation and clamping and quick disassembly of the helmet lens, and at the same time facilitate the adjustment of the front and rear angles of the helmet lens. By using the expansion and contraction of the hydraulic cylinder to adjust the angle of the support arm, the horizontal angle adjustment of the helmet lens is realized, and the impact resistance of the helmet lens in different environments can be simulated and tested, solving the problem of single function of the existing testing methods. Description of the Drawings

[0021] Figure 1 is a perspective view of a helmet lens detection device proposed by the present invention;

[0022] Figure 2 is a front view of a helmet lens detection device proposed by the present invention;

[0023] Figure 3 is a schematic diagram of the U-shaped slide seat of a helmet lens detection device proposed by the present invention;

[0024] Figure 4 is a sectional view of the support arm of a helmet lens detection device proposed by the present invention;

[0025] Figure 5 The sectional view of the sleeve of a helmet lens detection device proposed by the present invention.

[0026] Legend:

[0027] 1. Installation frame; 2. Support base; 201. Adjusting base; 3. Support arm; 301. First motor; 302. Slewing bearing; 303. Threaded block; 304. Threaded rod; 305. Chute; 306. Belt; 4. Hydraulic cylinder; 5. Clamping and fixing mechanism; 501. Sleeve; 502. Sleeve hole; 503. Telescopic slide bar; 504. Telescopic tongue; 505. First spring; 506. Pulling ring; 507. Tongue cavity; 508. Second spring; 6. Guide slide bar; 7. Second motor; 8. Rope roller; 9. Rope position hole; 10. Electromagnetic ring; 11. Fixed magnetic ring; 12. U-shaped slide seat; 121. U-shaped groove; 122. Counterweight installation screw; 13. Slide plate; 14. Cone block; 141. Pulling rope. Specific implementation mode

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0029] Refer to Figures 1-5 , an embodiment provided by the present invention: a helmet lens detection device, including an installation frame 1, a second motor 7 is fixedly connected to the top of the installation frame 1, a rope roller 8 is fixedly connected to the output end of the second motor 7, a pulling rope 141 is connected to the outer wall of the rope roller 8, and one end of the pulling rope 141 is connected to a cone block 14; a support base 2 is fixedly connected to the inner bottom of the installation frame 1, an adjusting base 201 is rotatably connected to the middle of the support base 2, a support arm 3 is fixedly connected to the top of the adjusting base 201, one end of the bottom of the support arm 3 is rotatably connected to a hydraulic cylinder 4, one end of the hydraulic cylinder 4 is rotatably connected to the inner bottom of the installation frame 1, and a clamping and fixing mechanism 5 is installed on the top of the support arm 3. The clamping and fixing mechanism 5 is used for clamping the helmet lens and can be used for detecting the toughness of the helmet lens and cooperating with the detection of impact resistance.

[0030] Specifically, by driving the rope roller 8 to rotate through the second motor 7, the pulling rope 141 can be stretched, and then the tapered block 14 can be lifted to different positions and then released. The falling of the tapered block 14 generates impact forces of different magnitudes. The clamping and fixing mechanism 5 is used to clamp the helmet lens, and the hydraulic cylinder 4 is used to extend and retract, thereby pushing the support arm 3 to rotate around the support base 2, and then adjusting the angle of the support arm 3, realizing multi-angle adjustment of the helmet lens, testing the impact resistance of the helmet lens at different positions, realizing multi-point testing and simulating tests at different speeds, and solving the problem of single function of the existing testing method.

[0031] A rope position hole 9 is arranged at the top of the installation frame 1, and the pulling rope 141 is located in the rope position hole 9. The rope position hole 9 facilitates the pulling rope 141 to pass through the installation frame 1, and is convenient for the second motor 7 and the rope roller 8 to be installed on the top of the installation frame 1.

[0032] Guide slide rods 6 are fixedly connected to both sides of the middle part of the installation frame 1. Height dimensions can be marked on the guide slide rods 6 to facilitate indicating height values. A slide plate 13 is slidably connected to the outer wall of the guide slide rod 6. Adjacent sides of the two slide plates 13 are respectively fixedly connected to both sides of the tapered block 14. A U-shaped slide seat 12 is arranged above the tapered block 14. The outer side of the pulling rope 141 penetrates through the middle part of the U-shaped slide seat 12. Fixed magnetic rings 11 are fixedly connected to both ends of the top of the U-shaped slide seat 12. Electromagnetic rings 10 are fixedly connected to both sides of the inner top of the installation frame 1. Counterweight installation screw rods 122 are connected to both sides of the middle part of the U-shaped slide seat 12. Counterweight blocks are sleeved on the outer sides of the counterweight installation screw rods 122. The counterweight blocks can be sleeved on the outer sides of the counterweight installation screw rods 122, and then nuts are used to screw on the outer tops of the counterweight installation screw rods 122 to fix the counterweight blocks to prevent the counterweight blocks from vibrating and falling.

[0033] Specifically, the slide plate 13 can play a role in limiting the tapered block 14 to prevent deviation during the falling process. When the electromagnetic ring 10 is energized, it can attract the fixed magnetic ring 11. At this time, the tapered block 14 can operate independently. When the electromagnetic ring 10 is de-energized, it can release the fixed magnetic ring 11. At this time, the U-shaped slide seat 12 and the fixed magnetic ring 11 fall together under the action of gravity and are supported by the tapered block 14. By driving the rope roller 8 to rotate through the second motor 7, the pulling rope 141 can be stretched, and then the tapered block 14 can be lifted to different positions and then released, so that the U-shaped slide seat 12 and the tapered block 14 fall synchronously, and different numbers of counterweight blocks can be installed on the outer sides of the counterweight installation screw rods 122, thereby realizing the control of the impact force magnitude and facilitating the simulation of different environments.

[0034] A chute 305 is provided in the middle of the support arm 3. Two threaded blocks 303 are slidably connected to the inner wall of the chute 305. A threaded rod 304 is rotatably connected to the middle of the support arm 3. The inside of the threaded block 303 is threadedly connected to the outer wall of the threaded rod 304. One end of the threaded rod 304 penetrates through the support arm 3 and extends to be fixedly connected to a pulley a. One end of the outer wall of the support arm 3 is fixedly connected to a first motor 301. The output end of the first motor 301 is fixedly connected to a pulley b. The pulley a and the pulley b are connected by a belt 306.

[0035] Among them, the threaded rod 304 is a bidirectional threaded rod, and the thread directions on the outer walls of its two ends are opposite. The inside of the two threaded blocks 303 is provided with internal threads in opposite directions, and the threads in the two threaded blocks 303 respectively match the threads at both ends of the outer wall of the threaded rod 304.

[0036] Specifically, the first motor 301 is used to drive the pulley b, and then the threaded rod 304 is driven to rotate through the belt 306 and the pulley a, and then the two threaded blocks 303 can be driven to approach or move away from each other simultaneously.

[0037] Clamping and fixing mechanisms 5 are installed on the tops of the two threaded blocks 303, and the two clamping and fixing mechanisms 5 are symmetrically distributed about the perpendicular bisector of the support arm 3. Enabling the two clamping and fixing mechanisms 5 to approach or move away from each other simultaneously can accommodate helmet lenses of different sizes.

[0038] A slewing bearing 302 is installed on the top of the threaded block 303. The clamping and fixing mechanism 5 includes a sleeve 501. The bottom of the sleeve 501 is connected to the top of the slewing bearing 302. A sleeve hole 502 is provided inside the sleeve 501. One end of the inner wall of the sleeve 501 is slidably connected to a telescopic slide rod 503. The telescopic slide rod 503 is located in the sleeve hole 502. One end of the telescopic slide rod 503 is fixedly connected to a second spring 508. One end of the second spring 508 is fixedly connected to the other end inside the sleeve 501. A plurality of uniformly distributed tongue cavities 507 are provided at the end of the telescopic slide rod 503 away from the sleeve 501. A plurality of telescopic tongues 504 are connected to the end of the telescopic slide rod 503 away from the sleeve 501. When the second spring 508 remains in a contracted state, the telescopic tongue 504 and the sleeve 501 are in close contact.

[0039] Specifically, the slewing bearing 302 can enable the sleeve 501 to rotate at different angles, so that the telescopic tongues 504 on the two sleeves 501 can approach or move away from each other. Generally, both ends of the existing helmet lenses have mounting holes for assembling the helmet lenses on the helmet. In the present invention, the mounting holes at both ends of the helmet lens are respectively aligned with the two clamping and fixing mechanisms 5, and the telescopic tongue 504 and the sleeve 501 are placed in the mounting hole of the helmet lens. The second spring 508 can tighten the telescopic tongue 504 to clamp the helmet lens, playing a clamping role.

[0040] One end of the telescopic tongue 504 is slidably connected within the tongue cavity 507. The other end of the telescopic tongue 504 is provided with an inclined surface, and the inclined surface is located on the side away from the sleeve 501. One end of the telescopic tongue 504 away from the inclined surface is fixedly connected within the telescopic slide rod 503 through the first spring 505. A pull ring 506 is fixedly connected to the end face of the telescopic slide rod 503 away from the sleeve 501.

[0041] Specifically, when the first spring 505 is in an open state, the telescopic tongue 504 is located outside the tongue cavity 507. Bring the mounting hole of the helmet lens close to the inclined surface of the telescopic tongue 504, and then pull the pull ring 506 to drive the telescopic tongue 504 to pass through the mounting hole of the helmet lens. During this process, the mounting hole of the helmet lens contacts the inclined surface of the telescopic tongue 504 and squeezes the telescopic tongue 504 to move into the tongue cavity 507. After the telescopic tongue 504 passes through the mounting hole, the telescopic tongue 504 moves outside the tongue cavity 507 under the elastic force of the first spring 505. Release the pull ring 506, and under the contraction action of the second spring 508, the telescopic tongue 504 can clamp the helmet lens with the sleeve 501 to achieve rapid installation and clamping of the helmet lens. When it is necessary to disassemble the helmet lens, just press the telescopic tongue 504 to make it move into the tongue cavity 507, and the helmet lens can be removed. Similarly, the clamping and fixing mechanism 5 can be applied to the clamping and fixing of the helmet.

[0042] A U-shaped groove 121 is provided in the middle of the U-shaped sliding seat 12. The counterweight mounting screw 122 is located within the U-shaped groove 121. The design of the U-shaped groove 121 facilitates the installation of the counterweight block and is convenient to operate.

[0043] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A helmet lens detection device, comprising a mounting frame (1), characterized in that: A second motor (7) is fixedly connected to the top of the mounting frame (1); a rope roller (8) is fixedly connected to the output end of the second motor (7); a pull rope (141) is connected to the outer wall of the rope roller (8); and one end of the pull rope (141) is connected to a cone block (14); The inner bottom of the mounting frame (1) is fixedly connected to a support seat (2), the middle of the support seat (2) is rotatably connected to an adjustment seat (201), the top of the adjustment seat (201) is fixedly connected to a support arm (3), one end of the bottom of the support arm (3) is rotatably connected to a hydraulic cylinder (4), one end of the hydraulic cylinder (4) is rotatably connected to the bottom of the inner wall of the mounting frame (1), and a clamping and fixing mechanism (5) is installed on the top of the support arm (3), the clamping and fixing mechanism (5) is used to clamp the helmet lens and can be used to detect the toughness of the helmet lens and cooperate with the impact resistance test; A slide groove (305) is provided in the middle of the support arm (3), and two threaded blocks (303) are slidably connected to the inner wall of the slide groove (305); A clamping and fixing mechanism (5) is installed on the top of each of the two threaded blocks (303), and the two clamping and fixing mechanisms (5) are symmetrically distributed about the mid-vertical line of the support arm (3); A slewing bearing (302) is installed on the top of the threaded block (303); the clamping and fixing mechanism (5) comprises a sleeve (501); the bottom of the sleeve (501) is connected to the top of the slewing bearing (302); a sleeve hole (502) is arranged inside the sleeve (501); a telescopic slide rod (503) is slidably connected to the inner wall of one end of the sleeve (501); the telescopic slide rod (503) is located in the sleeve hole (502); one end of the telescopic slide rod (503) is fixedly connected to a second spring (508); one end of the second spring (508) is fixedly connected to the other end of the sleeve (501); a plurality of evenly distributed tongue cavities (507) are arranged at one end of the telescopic slide rod (503) away from the sleeve (501); and a plurality of telescopic tongues (504) are connected to one end of the telescopic slide rod (503) away from the sleeve (501); One end of the telescopic tongue (504) is slidably connected in the tongue cavity (507), and the other end of the telescopic tongue (504) is provided with an inclined surface, and the inclined surface is located on the side away from the sleeve (501). The end of the telescopic tongue (504) away from the inclined surface is fixedly connected to the telescopic slide rod (503) through a first spring (505), and the end surface of the telescopic slide rod (503) away from the sleeve (501) is fixedly connected with a pull ring (506). The mounting holes at both ends of the helmet lens are respectively aligned with the two clamping and fixing mechanisms (5), and the mounting holes of the helmet lens are placed between the telescopic tongue (504) and the sleeve (501), so that the telescopic tongue (504) and the sleeve (501) can clamp the helmet lens.

2. A helmet lens detection device according to claim 1, characterized in that: A rope hole (9) is provided at the top of the installation frame (1), and the pull rope (141) is located in the rope hole (9).

3. A helmet lens detection device according to claim 1, characterized in that: Guide slide bars (6) are fixedly connected to both sides of the middle of the installation frame (1), and slide bars (13) are slidably connected to the outer wall of the guide slide bars (6). The adjacent sides of the two slide bars (13) are respectively fixedly connected to both sides of the cone block (14). A U-shaped slide seat (12) is arranged above the cone block (14). The outer side of the pull rope (141) passes through the middle of the U-shaped slide seat (12). Both ends of the top of the U-shaped slide seat (12) are fixedly connected to fixed magnetic rings (11). Both sides of the inner top of the installation frame (1) are fixedly connected to electromagnetic rings (10). Both sides of the middle of the U-shaped slide seat (12) are connected to counterweight mounting screws (122), and a counterweight block is sleeved on the outer side of the counterweight mounting screws (122).

4. A helmet lens detection device according to claim 1, characterized in that: The middle part of the support arm (3) is rotatably connected to a threaded rod (304); the internal thread of the threaded block (303) is connected to the outer wall of the threaded rod (304); one end of the threaded rod (304) passes through the support arm (3) and is fixedly connected to a pulley a after extending; one end of the outer wall of the support arm (3) is fixedly connected to a first motor (301); the output end of the first motor (301) is fixedly connected to a pulley b; and the pulley a and the pulley b are connected via a belt (306).

5. The helmet lens detection device according to claim 3, characterized in that: A U-shaped groove (121) is provided in the middle of the U-shaped sliding seat (12), and the counterweight mounting screw rod (122) is located in the U-shaped groove (121).

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