Safety helmet vertical distance laser detection device

Abstract

The invention discloses a safety helmet vertical distance laser detection device, and relates to the technical field of safety helmet processing, the safety helmet vertical distance laser detection device comprises a parallel transmission belt and a head mold assembly, an adsorption magnet is fixed on the surface of the parallel transmission belt, the head mold assembly is arranged on the surface of the adsorption magnet, and a second laser range finder is fixed on the lower part of the inner wall of a detection frame. A safety helmet body is worn on the top of the head mold body. According to the laser detection device for the vertical distance of the safety helmet, the detection vertical holes are formed in the surface of the head mold body and the surface of the distance measuring substrate on the basis that the outer contour of the head mold body is not affected, so that the height of a helmet shell and the height of a helmet lining can be measured at a time through the distance measuring instruments which are symmetrically distributed up and down; therefore, calculation of the vertical distance between the helmet shell and the helmet lining is completed at a time, secondary wearing of the helmet is not needed, the detection efficiency is greatly improved, the helmet body can be correctly worn through the wearing auxiliary part, and misalignment of the measured vertical distance caused by deflection of the helmet body during detection is prevented.

Description

Technical Field

[0001] The invention relates to the technical field of helmet processing, in particular to a laser detection device for vertical spacing of helmets. Background Art

[0002] The laser detection device for vertical spacing of helmets is mainly used to detect whether the vertical spacing between the lining and the outer shell of the helmet meets the standard. This spacing is a very important parameter in the design of helmets, which directly affects the cushioning performance of the helmet when it is impacted and the safety of the user.

[0003] The existing laser detection device for vertical spacing of safety helmets is to wear the safety helmet normally on the head mold, and the point on the edge of the short axis of the helmet shell and the scale mark corresponding to the head mold is X1. After removing the cap lining, the safety helmet is placed on the same head mold, and the scale mark corresponding to the same point on the edge of the helmet shell and the head mold is X2. The difference between X2 and X1 is calculated as the vertical spacing. Based on the above description, the existing laser detection device for vertical spacing of safety helmets often requires the safety helmet to be worn twice for detection of a single safety helmet, and the vertical spacing detection cannot be completed at one time. In addition, the safety helmet is easily tilted when worn twice, which affects the measurement accuracy of the vertical spacing.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and a laser detection device for the vertical spacing of a helmet is proposed. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a laser detection device for the vertical spacing of a helmet, which solves the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a laser detection device for vertical spacing of a safety helmet, comprising a parallel transmission belt and a head mold assembly, an adsorption magnet is fixed on the surface of the parallel transmission belt, the head mold assembly is arranged on the surface of the adsorption magnet, the head mold assembly comprises a ranging substrate, a head mold body, a wearing auxiliary part, a detection vertical hole, a detection frame, a first laser rangefinder, a second laser rangefinder and a processing host, a head mold body is fixed on the surface of the ranging substrate, and a wearing auxiliary part is arranged around the forehead height of the head mold body, the head mold body and the ranging substrate surface are both provided with detection vertical holes, detection frames are arranged on both sides of the parallel transmission belt, and the first laser rangefinder is fixed on the upper part of the inner wall of the detection frame, the second laser rangefinder is fixed on the lower part of the inner wall of the detection frame, and the processing host is arranged on the outer bottom of the detection frame, and the safety helmet body is worn on the top of the head mold body.

[0007] Furthermore, the helmet body includes a helmet shell and a hat lining, the interior of the helmet shell is provided with a hat lining, and the hat lining is adapted to the interior of the head mold body, and the bottom of the helmet shell fits with the top of the wearing auxiliary component.

[0008] Furthermore, a rigid support component is provided below the parallel conveyor belt and between the second laser rangefinder, and the rigid support component includes a lubricating oil tank and an oil support pipe, and the top of the lubricating oil tank is connected to the oil support pipe.

[0009] Furthermore, the rigid support assembly also includes a support bar and an oil outlet groove. The top of the oil delivery support pipe is connected to the support bar, and the surface of the support bar is provided with an oil outlet groove.

[0010] Furthermore, the rigid support assembly also includes a recovery box, and the recovery box is arranged below the support bar.

[0011] Furthermore, the rigid support assembly also includes a recovery pipe and a one-way valve, and the middle part of the bottom surface of the recovery box is connected to a lubricating oil tank through the recovery pipe and the one-way valve.

[0012] Furthermore, the rigid support component also includes a transmission wheel, transmission shafts are equidistantly arranged inside the parallel transmission belt, and the transmission shaft at one end inside the parallel transmission belt and the side surface of the transmission shaft above the lubricating oil tank are both connected to a transmission wheel.

[0013] Furthermore, the rigid support assembly also includes a transmission belt, and the surfaces of the two transmission wheels are provided with a transmission belt.

[0014] Furthermore, the rigid support assembly also includes a transmission rod, and the transmission wheel above the lubricating oil tank is rotatably connected to the transmission rod on its side.

[0015] Furthermore, the rigid support assembly also includes a piston rod, the bottom of the transmission rod is rotatably connected to the piston rod, and the piston rod is inserted into the lubricating oil tank.

[0016] The present invention provides a laser detection device for the vertical spacing of a helmet, which has the following beneficial effects:

[0017] 1. The laser detection device for vertical spacing of a safety helmet has vertical detection holes on the surface of the head mold body and the distance measurement substrate without affecting the external contour of the head mold body. Therefore, the first laser rangefinder and the second laser rangefinder symmetrically distributed up and down can measure the height of the cap shell and the height of the cap lining at one time. The height of the cap shell minus the height of the cap lining can be used to calculate the vertical distance between the cap shell and the cap lining at one time, so that there is no need to wear the safety helmet for a second time, which greatly improves the detection efficiency. The safety helmet body can be correctly worn by using the wearing auxiliary parts to prevent the vertical distance measured from being inaccurate due to the tilt of the safety helmet body during detection.

[0018] 2. When the ranging substrate moves between the first laser rangefinder and the second laser rangefinder, the upper surface of the support bar is slightly higher than the track surface to slightly lift the ranging substrate. As a result, the ranging substrate is rigidly supported by the support bar to eliminate the jitter effect caused by transmission, which is beneficial to improve the detection accuracy of the vertical distance between the helmet shell and the hat lining.

[0019] 3. The laser detection device for the vertical spacing of the helmet can carry the piston rod to perform piston movement inside the lubricating oil tank while using the transmission shaft to rotate to carry the crawler transmission, so that the surface of the support bar continuously produces lubricating oil to reduce the friction when the ranging substrate passes by, and the lubricating oil that flows out can also be recovered and recycled. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of a laser detection device for vertical spacing of a helmet according to the present invention;

[0021] Figure 2 This is a schematic diagram of the head mold body structure of a laser detection device for vertical spacing of a safety helmet according to the present invention;

[0022] Figure 3 This is a schematic diagram of the bottom structure of a distance measuring substrate of a safety helmet vertical spacing laser detection device of the present invention;

[0023] Figure 4 This is a schematic diagram of the outer side structure of a lubricating oil tank of a laser detection device for vertical spacing of a safety helmet according to the present invention;

[0024] Figure 5 The present invention is a schematic diagram of the inner side structure of a lubricating oil tank of a laser detection device for vertical spacing of a safety helmet.

[0025] In the figure: 1. Parallel transmission belt; 2. Adsorption magnet; 3. Head mold assembly; 301. Distance measurement substrate; 302. Head mold body; 303. Wearing auxiliary parts; 304. Detection vertical hole; 305. Detection frame; 306. First laser rangefinder; 307. Second laser rangefinder; 308. Processing host; 4. Safety helmet body; 5. Hard support assembly; 501. Lubricating oil tank; 502. Oil delivery support pipe; 503. Support bar; 504. Oil outlet tank; 505. Recovery box; 506. Recovery pipe; 507. One-way valve; 508. Transmission wheel; 509. Transmission belt; 510. Transmission rod; 511. Piston rod. DETAILED DESCRIPTION

[0026] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0027] like Figure 1-Figure 5 As shown, the present invention provides a technical solution: a laser detection device for the vertical spacing of a helmet, comprising a parallel transmission belt 1 and a head mold assembly 3, the surface of the parallel transmission belt 1 is fixed with an adsorption magnet 2, the head mold assembly 3 is arranged on the surface of the adsorption magnet 2, the head mold assembly 3 comprises a distance measurement substrate 301, a head mold body 302, a wearing auxiliary part 303, a detection vertical hole 304, a detection frame 305, a first laser rangefinder 306, a second laser rangefinder 307 and a processing host 308, the surface of the distance measurement substrate 301 is fixed with a head mold body 302, and the head mold body 302 is provided with a wearing auxiliary part 303 at the forehead height, and the head mold body The body 302 and the distance measuring substrate 301 are both provided with detection vertical holes 304, and detection frames 305 are arranged on both sides of the parallel conveyor belt 1, and a first laser rangefinder 306 is fixed to the upper part of the inner wall of the detection frame 305, and a second laser rangefinder 307 is fixed to the lower part of the inner wall of the detection frame 305, and a processing host 308 is arranged at the outer bottom of the detection frame 305, and a safety helmet body 4 is worn on the top of the head mold body 302, and the safety helmet body 4 includes a cap shell and a cap lining, and a cap lining is arranged inside the cap shell, and the cap lining is adapted to the inside of the head mold body 302, and the bottom of the cap shell fits with the top of the wearing auxiliary part 303;

[0028] The specific operation is as follows: first, the distance measuring substrate 301 is adsorbed on the surface of the parallel conveyor belt 1 by using the adsorption magnet 2, and then the helmet body 4 is manually worn on the head mold body 302. When wearing the helmet body 4, the wearing auxiliary part 303 is used to make the top of the helmet body 4 touch the bottom of the helmet shell, and the helmet body 4 can be correctly worn on the head mold body 302 by manual pressing to prevent the helmet body 4 from tilting outward when worn;

[0029] Then, the helmet body 4 is transported between the first laser rangefinder 306 and the second laser rangefinder 307 through the parallel conveyor belt 1. During this process, the first laser rangefinder 306 and the second laser rangefinder 307 first measure the distance between themselves and the distance measuring substrate 301, wherein the distance measured by the first laser rangefinder 306 is Y1, and the distance measured by the second laser rangefinder 307 is Y2. Then, when the helmet body 4 arrives between the first laser rangefinder 306 and the second laser rangefinder 307, the first laser rangefinder 306 measures the distance between it and the cap shell and records it as X1, while the second laser rangefinder 307 measures the distance between it and the cap lining by detecting the vertical hole 304 and records it as X2. After that, the processing host 308 receives the Y1, Y2, X1, and X2 data, and calculates the vertical height difference between the cap shell and the cap lining. The specific formula is as follows:

[0030] First calculate: Z1=Y1-X1, where Z1 is the distance between the cap shell and the ranging substrate 301;

[0031] Then calculate: Z2=X2-Y2, where Z2 is the distance between the cap lining and the distance measuring substrate 301;

[0032] Finally, calculate: Z1-Z2, thereby obtaining the vertical distance between the cap shell and the cap lining;

[0033] Based on the above description, the present invention provides a detection vertical hole 304 on the surface of the head mold body 302 and the ranging substrate 301 without affecting the external contour of the head mold body 302, thereby the first laser rangefinder 306 and the second laser rangefinder 307 symmetrically distributed up and down can measure the height of the cap shell and the height of the cap lining at one time, and the vertical distance between the cap shell and the cap lining can be calculated at one time by subtracting the height of the cap lining from the height of the cap shell, thereby eliminating the need to wear the safety helmet a second time, thereby greatly improving the detection efficiency, and the wearing auxiliary part 303 can be used to correctly wear the safety helmet body 4, so as to prevent the measured vertical distance from being inaccurate due to the tilt of the safety helmet body 4 during detection.

[0034] like Figure 1-Figure 5 As shown, a rigid support assembly 5 is provided below the parallel conveyor belt 1 between the second laser rangefinder 307, and the rigid support assembly 5 includes a lubricating oil tank 501 and an oil delivery support pipe 502, the top of the lubricating oil tank 501 is connected to the oil delivery support pipe 502, the rigid support assembly 5 also includes a support bar 503 and an oil outlet groove 504, the top of the oil delivery support pipe 502 is connected to the support bar 503, and the surface of the support bar 503 is provided with an oil outlet groove 504, the rigid support assembly 5 also includes a recovery box 505, and the recovery box 505 is provided below the support bar 503, the rigid support assembly 5 also includes a recovery pipe 506 and a one-way valve 507, and the middle of the bottom surface of the recovery box 505 is connected by the recovery pipe 506 and the one-way valve 507. 07 is connected to a lubricating oil tank 501, the rigid support component 5 also includes a transmission wheel 508, transmission shafts are equidistantly arranged inside the parallel transmission belt 1, and the transmission shaft at one end inside the parallel transmission belt 1 and the side of the transmission shaft above the lubricating oil tank 501 are both connected to the transmission wheel 508, the rigid support component 5 also includes a transmission belt 509, and the surfaces of the two transmission wheels 508 are both provided with transmission belts 509, the rigid support component 5 also includes a transmission rod 510, and the side of the transmission wheel 508 above the lubricating oil tank 501 is rotatably connected to the transmission rod 510, the rigid support component 5 also includes a piston rod 511, and the bottom of the transmission rod 510 is rotatably connected to the piston rod 511, and the piston rod 511 is penetrated into the lubricating oil tank 501;

[0035] The specific operation is as follows: since the parallel transmission belt 1 is composed of a transmission shaft and a crawler, wherein the crawler is a flexible structure, when it carries the helmet body 4 for transmission, it is easy to affect the accurate measurement of the vertical distance between the helmet shell and the helmet lining due to the inevitable slight vibration. In order to solve the above problem, when the distance measuring substrate 301 moves between the first laser rangefinder 306 and the second laser rangefinder 307, the upper surface of the support bar 503 is slightly higher than the crawler surface to slightly lift the distance measuring substrate 301, and the distance measuring substrate 301 and the adsorption magnet 2 are still kept adsorbed to each other, and the adsorption surface of the adsorption magnet 2 is treated with anti-slip treatment, thereby the distance measuring substrate 301 is rigidly supported by the support bar 503 to eliminate the jitter effect caused by the transmission, and the distance measuring substrate 301 and the adsorption magnet 2 are kept adsorbed, so that the parallel transmission belt 1 can still carry the distance measuring substrate 301 to move;

[0036] The crawler track is supported and driven by a transmission shaft, wherein the transmission shaft at the end drives the transmission wheel 508 to rotate and drives another transmission wheel 508 to rotate through a transmission belt 509, thereby causing the transmission rod 510 to carry the piston rod 511 to perform piston motion inside the lubricating oil tank 501, so that the lubricating oil inside the lubricating oil tank 501 enters the support bar 503 along the oil delivery support pipe 502 and overflows from the oil outlet groove 504 on its surface, thereby causing the surface of the support bar 503 to be provided with lubricating oil to reduce the friction between the support bar 503 and the ranging substrate 301;

[0037] The overflowed lubricating oil falls into the recovery box 505 under the action of gravity, and is recovered to the lubricating oil tank 501 through the recovery pipe 506 and the one-way valve 507, so that the lubricating oil can be reused. The one-way valve 507 can prevent the lubricating oil from flowing back along the recovery pipe 506 under the action of the piston.

[0038] Based on the above description, the present invention utilizes the rotation of the transmission shaft to carry the crawler transmission while also being able to carry the piston rod 511 to perform piston movement inside the lubricating oil tank 501, so that the surface of the support bar 503 continuously produces lubricating oil to reduce the friction when the ranging substrate 301 passes by, and the lubricating oil that flows out can also be recovered and recycled.

[0039] In summary, when the safety helmet vertical spacing laser detection device is used, firstly, the distance measuring substrate 301 is adsorbed on the surface of the parallel conveyor belt 1 by using the adsorption magnet 2, and then the safety helmet body 4 is manually worn on the head mold body 302. When wearing the safety helmet body 4, the wearing auxiliary part 303 is used to make the top of the helmet body 4 touch the bottom of the helmet shell, and the safety helmet body 4 can be correctly worn on the head mold body 302 by manual pressing, so as to prevent the safety helmet body 4 from tilting outward when worn;

[0040] Then, the helmet body 4 is transported between the first laser rangefinder 306 and the second laser rangefinder 307 through the parallel conveyor belt 1. During this process, the first laser rangefinder 306 and the second laser rangefinder 307 first measure the distance between themselves and the distance measuring substrate 301, wherein the distance measured by the first laser rangefinder 306 is Y1, and the distance measured by the second laser rangefinder 307 is Y2. Then, when the helmet body 4 arrives between the first laser rangefinder 306 and the second laser rangefinder 307, the first laser rangefinder 306 measures the distance between it and the cap shell and records it as X1, while the second laser rangefinder 307 measures the distance between it and the cap lining by detecting the vertical hole 304 and records it as X2. After that, the processing host 308 receives the Y1, Y2, X1, and X2 data, and calculates the vertical height difference between the cap shell and the cap lining. The specific formula is as follows:

[0041] First calculate: Z1=Y1-X1, where Z1 is the distance between the cap shell and the ranging substrate 301;

[0042] Then calculate: Z2=X2-Y2, where Z2 is the distance between the cap lining and the distance measuring substrate 301;

[0043] Finally, calculate: Z1-Z2, thereby obtaining the vertical distance between the cap shell and the cap lining;

[0044] When the distance measuring substrate 301 moves between the first laser rangefinder 306 and the second laser rangefinder 307, the upper surface of the support bar 503 is slightly higher than the surface of the track to slightly lift the distance measuring substrate 301, and the distance measuring substrate 301 and the adsorption magnet 2 are still adsorbed to each other, and the adsorption surface of the adsorption magnet 2 is treated with anti-slip treatment, so that the distance measuring substrate 301 is rigidly supported by the support bar 503 to eliminate the jitter effect caused by transmission, and the distance measuring substrate 301 and the adsorption magnet 2 are kept adsorbed, so that the parallel transmission belt 1 can still carry the distance measuring substrate 301 to move;

[0045] The crawler track is supported and driven by a transmission shaft, wherein the transmission shaft at the end drives the transmission wheel 508 to rotate and drives another transmission wheel 508 to rotate through a transmission belt 509, thereby causing the transmission rod 510 to carry the piston rod 511 to perform piston motion inside the lubricating oil tank 501, so that the lubricating oil inside the lubricating oil tank 501 enters the support bar 503 along the oil delivery support pipe 502 and overflows from the oil outlet groove 504 on its surface, thereby causing the surface of the support bar 503 to be provided with lubricating oil to reduce the friction between the support bar 503 and the ranging substrate 301;

[0046] The overflowed lubricating oil falls into the recovery box 505 under the action of gravity, and is recovered to the lubricating oil tank 501 through the recovery pipe 506 and the one-way valve 507, so that the lubricating oil can be reused. The one-way valve 507 can prevent the lubricating oil from flowing back along the recovery pipe 506 under the action of the piston.

[0047] The embodiments of the present invention are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A laser detection device for vertical spacing of helmets, comprising a parallel conveyor belt (1) and a head mold assembly (3), characterized in that: The surface of the parallel transmission belt (1) is fixed with an adsorption magnet (2), the head mold assembly (3) is arranged on the surface of the adsorption magnet (2), the head mold assembly (3) comprises a distance measurement substrate (301), a head mold body (302), a wearing auxiliary part (303), a detection vertical hole (304), a detection frame (305), a first laser distance meter (306), a second laser distance meter (307) and a processing host (308), the surface of the distance measurement substrate (301) is fixed with a head mold body (302), and the head mold body (302) is provided with a forehead height circumference A wearing auxiliary part (303) is provided. The surface of the head mold body (302) and the distance measuring substrate (301) are both provided with a detection vertical hole (304). A detection frame (305) is arranged on both sides of the parallel conveyor belt (1). A first laser distance meter (306) is fixed to the upper part of the inner wall of the detection frame (305). A second laser distance meter (307) is fixed to the lower part of the inner wall of the detection frame (305). A processing host (308) is arranged at the outer bottom of the detection frame (305). A safety helmet body (4) is worn on the top of the head mold body (302).

2. A laser detection device for vertical spacing of helmets according to claim 1, characterized in that: The helmet body (4) comprises a helmet shell and a hat lining, wherein the interior of the helmet shell is provided with a hat lining, and the hat lining is adapted to the interior of the head mold body (302), and the bottom of the helmet shell fits with the top of the wearing auxiliary component (303).

3. A laser detection device for vertical spacing of helmets according to claim 1, characterized in that: A rigid support assembly (5) is provided below the parallel conveyor belt (1) and between the second laser rangefinder (307), wherein the rigid support assembly (5) comprises a lubricating oil tank (501) and an oil delivery support pipe (502), and the top of the lubricating oil tank (501) is connected to the oil delivery support pipe (502).

4. A laser detection device for vertical spacing of helmets according to claim 3, characterized in that: The rigid support assembly (5) further comprises a support bar (503) and an oil outlet groove (504); the top of the oil delivery support pipe (502) is connected to the support bar (503), and the surface of the support bar (503) is provided with an oil outlet groove (504).

5. A safety helmet vertical spacing laser detection device according to claim 4, characterized in that: The rigid support assembly (5) further comprises a recovery box (505), and the recovery box (505) is arranged below the support bar (503).

6. A safety helmet vertical spacing laser detection device according to claim 5, characterized in that: The rigid support assembly (5) further comprises a recovery pipe (506) and a one-way valve (507), and the middle part of the bottom surface of the recovery box (505) is connected to a lubricating oil tank (501) via the recovery pipe (506) and the one-way valve (507).

7. A safety helmet vertical spacing laser detection device according to claim 6, characterized in that: The rigid support assembly (5) further comprises a transmission wheel (508), transmission shafts are equidistantly arranged inside the parallel transmission belt (1), and the transmission shaft at one end inside the parallel transmission belt (1) and the side surface of the transmission shaft above the lubricating oil tank (501) are both connected to a transmission wheel (508).

8. The laser detection device for vertical spacing of helmets according to claim 7, characterized in that: The rigid support assembly (5) further comprises a transmission belt (509), and the surfaces of the two transmission wheels (508) are both provided with a transmission belt (509).

9. A safety helmet vertical spacing laser detection device according to claim 8, characterized in that: The rigid support assembly (5) further comprises a transmission rod (510), and the transmission wheel (508) above the lubricating oil tank (501) is rotatably connected to the transmission rod (510) on its side.

10. A laser detection device for vertical spacing of helmets according to claim 9, characterized in that: The rigid support assembly (5) further comprises a piston rod (511), the bottom of the transmission rod (510) is rotatably connected to the piston rod (511), and the piston rod (511) is inserted into the interior of the lubricating oil tank (501).

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