Safety helmet ultraviolet aging test chamber

Abstract

The utility model discloses a safety helmet ultraviolet ageing test box, include: test box and fixed establishment, the test box inside is provided with ultraviolet lamp, the test box inside is provided with base, fixed establishment includes fixed bolster, is used for the clamping fixed safety helmet's spacing clamping plate and is used for the adjustment clamping degree's adjustment arc plate, the fixed bolster is installed at the base top, the utility model discloses a fixed establishment is set up, not only can the safety helmet clamping fixed to the test box inside, guarantees the stability of safety helmet in the test box, avoids the safety helmet in the test process because of the shaking and leads to the uneven ultraviolet irradiation, and can in the process of safety helmet clamping fixed, according to the clamping degree of fixed establishment to safety helmet is adjusted to the safety helmet in different test scenes, to guarantee the stability of safety helmet under different test scenes.

Description

Technical Field

[0001] This utility model relates to the field of safety helmet testing technology, and in particular to a safety helmet ultraviolet aging test chamber. Background Technology

[0002] As an important personal protective equipment, safety helmets are used to protect the head from hazards such as falling objects, impacts, electric shocks, and high temperatures. To ensure the safety and reliability of safety helmets in actual use, their performance needs to be tested using scientific testing methods and rigorous equipment. This evaluation assesses the helmet's performance and ensures the user's safety. Safety helmet testing focuses on aspects such as impact absorption performance, puncture resistance, lateral stiffness, electrical insulation performance, flame retardancy, low-temperature resistance, and UV aging resistance. UV aging tests are mainly used to evaluate the performance changes of safety helmets under long-term UV exposure, including material aging, strength reduction, and color fading, to ensure the reliability and safety of safety helmets in actual use.

[0003] When testing the UV aging resistance of safety helmets, auxiliary fixing mechanisms such as brackets are usually used to fix the helmets into the test chamber. Since UV aging resistance tests require uniform irradiation of UV rays, the existing brackets usually keep the clamping force on the helmet fixed. In this case, the fixing force of the bracket cannot be adjusted according to the fixing requirements when the helmet faces different test scenarios, thus failing to guarantee the stability of the safety helmet in different test scenarios.

[0004] Therefore, how to design a test chamber that can adjust the fixing force according to the safety helmet test site is a technical problem that technicians need to solve. Utility Model Content

[0005] The purpose of this invention is to provide a safety helmet ultraviolet aging test chamber, which solves the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a safety helmet ultraviolet aging test chamber, comprising: a test chamber and a fixing mechanism; an ultraviolet lamp is installed inside the test chamber, and a base is installed inside the test chamber; the fixing mechanism includes a fixing bracket, a limiting clamp for clamping and fixing the safety helmet, and an adjusting arc plate for adjusting the clamping force; the fixing bracket is installed on the top of the base.

[0007] Preferably, the fixed bracket is provided with a placement plate at the top, the fixed bracket is provided with a groove inside, an elastic connecting plate is provided inside the groove, an elastic clamp is provided at one end of the elastic connecting plate, and a limit clamp is provided at one end of the elastic clamp.

[0008] Preferably, the other end of the elastic clamp is provided with a downward push plate, one end of the downward push plate is provided with a supporting arc plate, the outer wall of the supporting arc plate is provided with an elastic connecting piece, one end of the elastic connecting piece is connected to the inner wall of the placement plate, the inner wall of the fixed bracket is provided with a limiting block, the outer wall of the elastic clamp is provided with an elastic support plate, one end of the elastic support plate is provided with a limiting baffle, the limiting baffle is provided with a limiting slot adapted to the shape of the limiting block, and the limiting slot is fixedly sleeved inside the limiting block.

[0009] Preferably, the top of the limiting baffle is provided with an adjusting arc plate, the outer wall of the adjusting arc plate is provided with an adjusting pressure plate, one end of the adjusting arc plate is provided with an arc-shaped support plate, and the adjusting arc plate is provided at both ends of the arc-shaped support plate, and has a mirror symmetrical structure.

[0010] Preferably, the fixing bracket has several bolts inside, and the fixing bracket is installed to the top of the base by the bolts.

[0011] Compared with the prior art, the beneficial effects of this utility model are: In this example, by setting up a fixing mechanism, not only can the safety helmet be clamped and fixed, but the clamping force of the fixing mechanism can also be adjusted according to the fixing requirements of the safety helmet. This setting can, on the one hand, clamp and fix the safety helmet into the test chamber before testing, ensuring the stability of the safety helmet in the test chamber and avoiding uneven ultraviolet irradiation caused by the safety helmet shaking during the test, which would affect the accuracy of the test results. On the other hand, during the clamping and fixing of the safety helmet, the clamping force of the fixing mechanism can be adjusted according to different test scenarios, thereby ensuring the stability of the safety helmet under different test scenarios. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the overall structure of the fixing mechanism of this utility model; Figure 3 yes Figure 2 Cross-sectional view of the three-dimensional structure; Figure 4 yes Figure 3 Enlarged structural diagram at point A in the middle.

[0014] As indicated by the markings in the diagram: 1. Test chamber; 2. Fixing mechanism; 201. Fixing bracket; 202. Placement plate; 203. Groove; 204. Elastic connecting plate; 205. Elastic clamping plate; 206. Arc-shaped hook plate; 207. Downward push plate; 208. Support arc plate; 209. Elastic connecting piece; 210. Elastic support plate; 211. Limiting baffle; 212. Limiting slot; 213. Limiting block; 214. Adjusting arc plate; 215. Arc-shaped support plate; 216. Adjusting pressure plate; 217. Bolt; 3. Ultraviolet lamp; 4. Base. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model. The preferred embodiments of this utility model will now be described in more detail with reference to the accompanying drawings. Although the preferred embodiments of this utility model are shown in the drawings, it should be understood that this utility model can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to make this utility model more thorough and complete, and to fully convey the scope of this utility model to those skilled in the art.

[0016] The technical solutions of the embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the overall structure of the fixing mechanism of this utility model; Figure 3 yes Figure 2 Cross-sectional view of the three-dimensional structure; Figure 4 yes Figure 3 Enlarged structural diagram at point A in the middle.

[0018] refer to Figures 1 to 4 Safety helmet UV aging test chamber, including: The test chamber 1 and the fixing mechanism 2 are provided. The test chamber 1 is equipped with an ultraviolet lamp 3 and a base 4. The fixing mechanism 2 includes a fixing bracket 201, a limiting clamp 206 for clamping and fixing the safety helmet, and an adjusting arc plate 214 for adjusting the clamping force. The fixing bracket 201 is installed on the top of the base 4. Several bolts 217 are provided inside the fixing bracket 201. The fixing bracket 201 is installed on the top of the base 4 by bolts 217.

[0019] Specifically, the fixed bracket 201 has a placement plate 202 on its top, a groove 203 inside the fixed bracket 201, an elastic connecting plate 204 inside the groove 203, an elastic clamping plate 205 at one end of the elastic connecting plate 204, and a limiting clamping plate 206 at one end of the elastic clamping plate 205.

[0020] Specifically, the other end of the elastic clamping plate 205 is provided with a pressing push plate 207, one end of the pressing push plate 207 is provided with a supporting arc plate 208, the outer wall of the supporting arc plate 208 is provided with an elastic connecting piece 209, one end of the elastic connecting piece 209 is connected to the inner wall of the placement plate 202, and the inner wall of the fixed bracket 201 is provided with a limit block 213.

[0021] Specifically, the outer wall of the elastic clamp 205 is provided with an elastic support plate 210, and one end of the elastic support plate 210 is provided with a limit baffle 211. The limit baffle 211 is provided with a limit slot 212 that matches the shape of the limit block 213. The limit slot 212 is fixedly fitted inside the limit block 213.

[0022] Specifically, the top of the limiting baffle 211 is provided with an adjusting arc plate 214, the outer wall of the adjusting arc plate 214 is provided with an adjusting pressure plate 216, one end of the adjusting arc plate 214 is provided with an arc-shaped support plate 215, the adjusting arc plate 214 is located at both ends of the arc-shaped support plate 215, and has a mirror symmetrical structure.

[0023] Example 1: In this embodiment, to address the instability of the safety helmet during testing, the technical solution is as follows (refer to...). Figures 1 to 4 The elastic connecting plate 204 is an arc-shaped elastic curved surface structure, the elastic clamping plate 205 is an arc-shaped curved surface plate, the limiting clamping plate 206 is C-shaped, and the downward pressing plate 207 is an arc-shaped curved surface plate. The elastic clamping plate 205 is connected to the supporting arc plate 208 through the downward pressing plate 207. The supporting arc plate 208 is circular in shape. When the safety helmet is placed on the placement plate 202, the supporting arc plate 208 is squeezed, which drives the downward pressing plate 207 to move downward, pushing the elastic clamping plate 205 to rotate around the elastic connecting plate 204, so that the limiting clamping plate 206 contacts the surface of the safety helmet. At this time, the safety helmet is clamped, thereby completing the clamping and fixing of the safety helmet.

[0024] Example 2: In this embodiment, to address the issue of insufficient helmet clamping capacity for different testing scenarios, the technical solution is as follows (see reference). Figures 1 to 4The adjusting arc plate 214 is an arc-shaped plate. The adjusting arc plate 214 is arranged in a linear array inside the fixed bracket 201. The adjusting pressure plate 216 is set on the outer wall of the adjusting arc plate 214. When it is necessary to adjust the clamping force, the position of the adjusting pressure plate 216 is adjusted to drive the position of the adjusting arc plate 214 in the fixed bracket 201. Then, under the drive of the elastic support plate 210, the elastic clamping plate 205 is pulled to move. Then, under the support of the elastic connecting plate 204, the elastic clamping plate 205 further clamps and fixes the safety helmet. Thus, the clamping force of the fixing mechanism 2 on the safety helmet can be adjusted according to different test scenarios to ensure the stability of the safety helmet under different test scenarios.

[0025] It should be noted that the arc-shaped support plate 215 is S-shaped, and the adjusting arc plate 214 is set at both ends of the arc-shaped support plate 215 and has a mirror symmetrical structure. Under the action of the arc-shaped support plate 215, the position of the adjusting arc plate 214 can be restricted.

[0026] As a further limitation of this technical solution, the shape of the limiting block 213 is adapted to the shape of the limiting slot 212, and the elastic support plate 210 is S-shaped. Under the action of the elastic support plate 210, the limiting baffle 211 is squeezed, so that the limiting block 213 is fixedly sleeved in the limiting slot 212, limiting the position of the adjusting arc plate 214 and preventing the adjusting arc plate 214 from sliding.

[0027] Based on the above embodiments, it can be concluded that during use, the fixed bracket 201 is installed on the top of the base 4 inside the test chamber 1 using bolts 217. Then, the safety helmet is placed on the placement plate 202, which compresses the supporting arc plate 208, causing the downward pressing plate 207 to move downward and push the elastic clamping plate 205 to rotate around the elastic connecting plate 204, so that the limiting clamping plate 206 contacts the surface of the safety helmet and clamps the safety helmet, thereby clamping and fixing the safety helmet. Then, by adjusting the position of the adjusting pressure plate 216, the position of the adjusting arc plate 214 inside the fixed bracket 201 is driven by the elastic support plate 210, which pulls the elastic clamping plate 205 to move. Then, under the support of the elastic connecting plate 204, the elastic clamping plate 205 further clamps and fixes the safety helmet to ensure the stability of the safety helmet in the test chamber 1.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A safety helmet ultraviolet aging test chamber, characterized in that, include: The test chamber (1) and the fixing mechanism (2) are provided. The test chamber (1) is equipped with an ultraviolet lamp (3) and a base (4) is provided inside the test chamber (1). The fixing mechanism (2) includes a fixing bracket (201), a limiting clamp (206) for clamping and fixing the safety helmet, and an adjusting arc plate (214) for adjusting the clamping force. The fixing bracket (201) is installed on the top of the base (4).

2. The ultraviolet aging test chamber for safety helmets according to claim 1, characterized in that, The fixed bracket (201) is provided with a placement plate (202) on the top, and a groove (203) is provided inside the fixed bracket (201). An elastic connecting plate (204) is provided inside the groove (203). An elastic clamping plate (205) is provided at one end of the elastic connecting plate (204), and a limiting clamping plate (206) is provided at one end of the elastic clamping plate (205).

3. The ultraviolet aging test chamber for safety helmets according to claim 2, characterized in that, The other end of the elastic clamp (205) is provided with a pressing push plate (207), one end of the pressing push plate (207) is provided with a supporting arc plate (208), the outer wall of the supporting arc plate (208) is provided with an elastic connecting piece (209), one end of the elastic connecting piece (209) is connected to the inner wall of the placement plate (202), and the inner wall of the fixed bracket (201) is provided with a limit block (213).

4. The ultraviolet aging test chamber for safety helmets according to claim 3, characterized in that, The elastic clamp (205) has an elastic support plate (210) on its outer wall. One end of the elastic support plate (210) has a limit baffle (211). The limit baffle (211) has a limit slot (212) that matches the shape of the limit block (213). The limit slot (212) is fixedly fitted inside the limit block (213).

5. The ultraviolet aging test chamber for safety helmets according to claim 4, characterized in that, The top of the limiting baffle (211) is provided with an adjusting arc plate (214), and the outer wall of the adjusting arc plate (214) is provided with an adjusting pressure plate (216).

6. The ultraviolet aging test chamber for safety helmets according to claim 5, characterized in that, The adjusting arc plate (214) is provided with an arc-shaped support plate (215) at one end, and the adjusting arc plate (214) is provided at both ends of the arc-shaped support plate (215) and has a mirror symmetrical structure.

7. The ultraviolet aging test chamber for safety helmets according to claim 1, characterized in that, The fixed bracket (201) is provided with several bolts (217) inside, and the fixed bracket (201) is installed on the top of the base (4) by means of bolts (217).

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