A laser detection device for vertical spacing of safety helmets

Abstract

The present invention discloses a laser detection device for detecting the vertical spacing of safety helmets, which relates to the technical field of safety helmet processing. The device comprises a parallel conveyor belt and a head mold assembly, wherein an adsorption magnet is fixed to the surface of the parallel conveyor belt, the head mold assembly is arranged on the surface of the adsorption magnet, a second laser rangefinder is fixed to the lower portion of the inner wall of the detection frame, and a safety helmet body is worn on the top of the head mold body. The laser detection device for detecting the vertical spacing of safety helmets has vertical detection holes opened on the surface of the head mold body and the surface of the distance measurement substrate without affecting the external contour of the head mold body. Thus, the height of the helmet shell and the height of the hat lining can be measured at one time by the rangefinders symmetrically distributed above and below, thereby completing the calculation of the vertical distance between the helmet shell and the hat lining at one time. There is no need to wear the safety helmet a second time, which greatly improves the detection efficiency. Moreover, the safety helmet body can be correctly worn using a wearing auxiliary part to prevent the measured vertical distance from being inaccurate due to the tilt of the safety helmet body during detection.

Description

Technical Field

[0001] The invention relates to the technical field of safety helmet processing, in particular to a safety helmet vertical spacing laser detection device. 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 shell of the helmet meets the standards. This spacing is a very important parameter in the design of helmets, which directly affects the cushioning performance of the helmet when subjected to impact 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 corresponding to the scale mark on the head mold is X1. After removing the lining of the safety helmet, put it on the same head mold, and the scale mark on the same point on the edge of the helmet shell corresponding to 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 in 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 shortcomings of the existing technology, the present invention provides a laser detection device for the vertical spacing of safety helmets, which solves the problems raised in the above background technology.

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

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

[0009] Furthermore, the rigid support assembly further 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 provided below the support bar.

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

[0012] Furthermore, the rigid support assembly 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 safety helmets, which has the following beneficial effects:

[0017] 1. This safety helmet vertical distance laser detection device 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, which are symmetrically distributed above and below, can measure the height of the helmet shell and the height of the hat lining at one time. The vertical distance between the helmet shell and the hat lining can be calculated at one time by subtracting the height of the hat lining from the height of the helmet shell. This eliminates the need to wear the helmet a second time, greatly improving detection efficiency. In addition, the safety helmet body can be worn correctly using a wearing aid to prevent the measured vertical distance from being inaccurate due to the skew of the helmet body during detection.

[0018] 2. This safety helmet vertical distance laser detection device, when the ranging substrate moves between the first laser rangefinder and the second laser rangefinder, uses the upper surface of the support bar 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 influence of jitter 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 safety helmets uses the drive shaft to rotate and carry the track transmission while also carrying the piston rod to perform piston movement inside the lubricating oil tank, so that the surface of the support bar continuously produces lubricating oil to reduce the friction when the ranging substrate passes by, and the outflowing lubricating oil 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 safety helmets 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 ranging substrate of a laser detection device for vertical spacing between helmets according to the present invention;

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

[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 support pipe; 503. Support bar; 504. Oil outlet tank; 505. Recovery box; 506. Recovery pipe; 507. One-way valve; 508. Drive wheel; 509. Drive belt; 510. Drive rod; 511. Piston rod. DETAILED DESCRIPTION

[0026] The following embodiments of the present invention are described in further detail with reference to 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, wherein an adsorption magnet 2 is fixed to the surface of the parallel transmission belt 1, and the head mold assembly 3 is arranged on the surface of the adsorption magnet 2, and the head mold assembly 3 comprises a ranging 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, wherein a head mold body 302 is fixed to the surface of the ranging substrate 301, and a wearing auxiliary part 303 is arranged around the forehead height of the head mold body 302, and the head mold body 302 is provided with a wearing auxiliary part 303. Vertical detection holes 304 are provided on the surface of the body 302 and the distance measuring substrate 301. Detection frames 305 are provided on both sides of the parallel conveyor belt 1. A first laser rangefinder 306 is fixed to the upper portion of the inner wall of the detection frame 305, a second laser rangefinder 307 is fixed to the lower portion of the inner wall of the detection frame 305, and a processing host 308 is provided on the outer bottom of the detection frame 305. A safety helmet body 4 is worn on the top of the head mold body 302. The safety helmet body 4 includes a helmet shell and a helmet lining. The interior of the helmet shell is provided with a helmet lining, and the helmet lining is adapted to the exterior of the head mold body 302. Moreover, the bottom of the helmet shell is in contact with the top of the wearing auxiliary component 303.

[0028] The specific operation is as follows: first, the distance measuring substrate 301 is adsorbed to the surface of the parallel conveyor belt 1 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 member 303 is used to make the top of the helmet body 4 touch the bottom of the helmet shell. By manually pressing, the helmet body 4 can be correctly worn on the head mold body 302 to prevent the helmet body 4 from tilting outward when worn;

[0029] The helmet body 4 is then transported between the first laser rangefinder 306 and the second laser rangefinder 307 via 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, where 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 helmet shell and records it as X1, while the second laser rangefinder 307 measures the distance between it and the helmet 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 helmet shell and the helmet 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 using the first laser rangefinder 306 and the second laser rangefinder 307 symmetrically distributed above and below to measure the height of the cap shell and the height of the cap lining at one time, and subtracting the height of the cap lining from the height of the cap shell to complete the calculation of the vertical distance between the cap shell and the cap lining at one time, thereby eliminating the need to wear the safety helmet a second time, thereby greatly improving the detection efficiency, and using the wearing auxiliary part 303 to correctly wear the safety helmet body 4, to prevent the safety helmet body 4 from being skewed during detection, resulting in inaccurate measured vertical distance.

[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. A 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. The middle part of the bottom surface of the recovery box 505 is connected to the recovery pipe 506 and the one-way valve 507. 07 is connected to a lubricating oil tank 501, the rigid support assembly 5 also includes a transmission wheel 508, transmission shafts are equidistantly arranged inside the parallel conveyor belt 1, and the transmission shaft at one end inside the parallel conveyor belt 1 and the side of the transmission shaft above the lubricating oil tank 501 are both connected to transmission wheels 508, the rigid support assembly 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 assembly 5 also includes a transmission rod 510, the side of the transmission wheel 508 above the lubricating oil tank 501 is rotatably connected to the transmission rod 510, the rigid support assembly 5 also includes 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 arranged inside the lubricating oil tank 501;

[0035] The specific operation is as follows: since the parallel conveyor belt 1 is composed of a transmission shaft and a crawler belt, wherein the crawler belt is a flexible structure, it is easy to affect the accurate measurement of the vertical distance between the helmet shell and the hat lining due to inevitable slight vibration when it carries the helmet body 4 for transmission. 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 belt surface to slightly lift the distance measuring substrate 301, while still maintaining the mutual adsorption of the distance measuring substrate 301 and the adsorption magnet 2. The adsorption surface of the adsorption magnet 2 is treated with anti-slip treatment. As a result, the distance measuring substrate 301 is rigidly supported by the support bar 503 to eliminate the influence of the jitter generated by the transmission, and the distance measuring substrate 301 and the adsorption magnet 2 remain adsorbed, so that the parallel conveyor belt 1 can still carry the distance measuring substrate 301 to move;

[0036] The crawler tracks are supported and driven by drive shafts. The drive shaft at the end rotates the drive wheel 508 and drives another drive wheel 508 via the drive belt 509. This causes the drive rod 510 to carry the piston rod 511 and perform piston motion inside the lubricating oil tank 501. The lubricating oil inside the lubricating oil tank 501 flows along the oil delivery support pipe 502 into the support bar 503 and overflows from the oil outlet groove 504 on its surface. As a result, the surface of the support bar 503 is covered with lubricating oil, thereby reducing 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 drive shaft to rotate and 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 using the laser detection device for vertical distance between helmets, the distance measuring substrate 301 is first adsorbed to the surface of the parallel conveyor belt 1 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 member 303 is used to make the top of the helmet body 4 touch the bottom of the helmet shell. 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.

[0040] The helmet body 4 is then transported between the first laser rangefinder 306 and the second laser rangefinder 307 via 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, where 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 helmet shell and records it as X1, while the second laser rangefinder 307 measures the distance between it and the helmet 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 helmet shell and the helmet 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, while still maintaining the distance measuring substrate 301 and the adsorption magnet 2 adsorbed to each other. The adsorption surface of the adsorption magnet 2 is treated with anti-slip treatment. In this way, the distance measuring substrate 301 is rigidly supported by the support bar 503 to eliminate the jitter caused by transmission. The distance measuring substrate 301 and the adsorption magnet 2 remain adsorbed, so that the parallel conveyor belt 1 can still carry the distance measuring substrate 301 to move;

[0045] The crawler tracks are supported and driven by drive shafts. The drive shaft at the end rotates the drive wheel 508 and drives another drive wheel 508 via the drive belt 509. This causes the drive rod 510 to carry the piston rod 511 and perform piston motion inside the lubricating oil tank 501. The lubricating oil inside the lubricating oil tank 501 flows along the oil delivery support pipe 502 into the support bar 503 and overflows from the oil outlet groove 504 on its surface. As a result, the surface of the support bar 503 is covered with lubricating oil, thereby reducing 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 presented for purposes 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 skilled in the art. The embodiments are chosen and described in order to better illustrate the principles of the invention and its practical application and to enable those skilled in the art to understand the invention and design various embodiments with various modifications as suited for specific applications.

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 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 forehead height of the head mold body (302) is surrounded by a A wearing auxiliary part (303) is provided. Detection vertical holes (304) are provided on the surfaces of the head mold body (302) and the distance measuring substrate (301). Detection frames (305) are provided on both sides of the parallel conveyor belt (1). A first laser distance meter (306) is fixed on the upper part of the inner wall of the detection frame (305). A second laser distance meter (307) is fixed on the lower part of the inner wall of the detection frame (305). A processing host (308) is provided on 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. The 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 helmet lining. The helmet shell is provided with a helmet lining inside, and the helmet lining is adapted to the outside of the head mold body (302). The bottom of the helmet shell is fitted with the top of the wearing auxiliary component (303).

3. The 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). The rigid support assembly (5) comprises 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).

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

6. The laser detection device for vertical spacing of helmets 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 portion 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. The laser detection device for vertical spacing of safety helmets 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 the transmission wheel (508).

8. The laser detection device for vertical spacing of safety 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. The laser detection device for vertical spacing of helmets 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. The 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 lubricating oil tank (501).

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