A road traffic reflective film impact resistance tester

Abstract

This invention provides a road traffic reflective film impact resistance tester, mainly used to test the impact resistance of reflective films. The tester includes a base, a horizontal bubble, a locking device, a support, a V-groove magnetic clamp, and an impact ball. The horizontal bubble ensures the base is level, and the locking device presses and fixes the edges of the reflective film to eliminate curling stress, achieving complete adhesion between the sample and the base. The V-groove magnetic clamp magnetically attracts and fixes the impact ball, which, when released, falls freely from a preset height to impact the reflective film. Compared to traditional devices, this invention solves the problem of sample unevenness through edge pressing and level calibration, and uses the magnetic clamp to precisely control the impact height, ensuring the repeatability and reliability of the test results.

Description

Technical Field

[0001] This utility model relates to the field of road traffic facility testing devices, and in particular to a road traffic reflective film impact resistance tester. Background Technology

[0002] In the field of road traffic, reflective film is a key material for improving nighttime driving safety, and its impact resistance directly affects its service life and safety performance. Traditional impact resistance testing methods have the following technical defects: First, reflective film is usually stored in a rolled-up state, and after unfolding, the sample surface is prone to unevenness due to its own tension or improper handling. Existing devices mostly rely on simple pressure plates or clamps for fixation, which makes it difficult to ensure complete adhesion between the reflective film and the test substrate (such as a steel plate), resulting in uneven force distribution at the impact point and affecting test accuracy. Second, traditional tests often control the impact energy by manually adjusting the release position of the steel ball, but this suffers from large human operation errors and poor repeatability. Although some devices are equipped with scales or limiting structures, it is still difficult to accurately reproduce a specific impact height, resulting in a lack of comparability between test results from different batches. Finally, the impact of the test substrate's levelness on the impact effect is not considered; the impact force decomposition under tilted conditions will change the actual effect, further reducing test reliability. Utility Model Content

[0003] The purpose of this invention is to provide a road traffic reflective film impact resistance performance tester to solve the technical problem of low accuracy in traditional reflective film impact resistance performance testing.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is: to provide a road traffic reflective film impact resistance performance tester, the road traffic reflective film impact resistance performance tester comprising:

[0005] Base;

[0006] A horizontal bubble, wherein the horizontal bubble is disposed on the base;

[0007] A locking device is provided on the base and is used to press and fix the edge of the reflective film.

[0008] A bracket, which is disposed on the base;

[0009] V-groove magnetic clamp, wherein the V-groove magnetic clamp is disposed on the bracket;

[0010] An impact ball is attached and fixed to the bottom of the V-groove magnetic clamp under magnetic force.

[0011] In one embodiment, the locking device specifically includes a pressure plate and a thumb-type locking device disposed on the pressure plate and the base, wherein the thumb-type locking device presses and fixes the pressure plate and the reflective film below the pressure plate to the base.

[0012] In one embodiment, the vertical distance between the impact ball and the upper surface of the base is 250 mm.

[0013] In one embodiment, the V-groove magnetic clamp includes an electromagnet and a switch knob for controlling the energization of the electromagnet.

[0014] In one embodiment, a fence is also included, which is disposed on the base, and gaps are reserved between the fence and the base on both sides near the locking device.

[0015] In one embodiment, the base is made of a steel plate with a quenched and tempered surface.

[0016] The above-described technical solutions in the embodiments of this utility model have at least the following technical effects or advantages:

[0017] The road traffic reflective film impact resistance tester provided in this embodiment of the invention eliminates the interference of substrate tilt on the impact trajectory and energy distribution through the horizontal bubble calibration function on the base. Furthermore, a locking device presses the reflective film firmly, eliminating the film's curling stress and ensuring that the test area is completely flat and adheres to the base, avoiding stress concentration errors caused by localized suspension. In addition, the V-groove magnetic clamp allows for instantaneous separation of the impact ball from the clamp, ensuring accurate reproduction of specific impact heights and thus guaranteeing the accuracy of the test. Attached Figure Description

[0018] 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.

[0019] Figure 1 A schematic diagram of the impact resistance tester for road traffic reflective film provided in this embodiment of the utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the road traffic reflective film impact resistance tester provided in this embodiment of the utility model during testing.

[0021] The labels for the various figures are as follows:

[0022] 1. Base; 2. Horizontal bubble; 3. Locking device; 4. Bracket; 5. V-groove magnetic clamp; 6. Impact ball; 7. Fence; 8. Reflective film; 31. Pressure plate; 32. Thumb-type locking device; 51. Switch knob. Detailed Implementation

[0023] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0024] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0026] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] Please see Figures 1 to 2This application provides a road traffic reflective film 8 impact resistance tester, including a base 1, a horizontal bubble 2, a locking device 3, a bracket 4, a V-groove magnetic clamp 5, and an impact ball 6. The horizontal bubble 2 is disposed on the base 1. The locking device 3 is disposed on the base 1 and is used to press and fix the edge of the reflective film 8. The bracket 4 is disposed on the base 1. The V-groove magnetic clamp 5 is disposed on the bracket 4. The impact ball 6 is magnetically attracted and fixed to the bottom of the V-groove magnetic clamp 5.

[0028] The impact resistance tester for road traffic reflective film 8 provided by this utility model is used to test the impact resistance of reflective film 8 used in road traffic. During the test, the base 1 is adjusted to a horizontal state by observing the horizontal bubble 2. Then, the rolled-up reflective film 8 is laid flat on the base 1, and the edges of the reflective film 8 are pressed and fixed by the locking device 3 to ensure that the reflective film 8 is in close contact with the top surface of the base 1 during the test. Then, by releasing the V-groove magnetic clamp 5, the impact ball 6 on the V-groove magnetic clamp 5 is allowed to fall freely from a specific height (i.e., the height of the bottom of the V-groove magnetic clamp 5, which can be freely designed according to the test requirements) and hit the reflective film 8 below. After completion, the locking device 3 is released, the reflective film 8 is removed from the base 1, and the test area (the impacted position) of the reflective film 8 is observed to see if cracks, interlayer separation or other damage occur, thus completing the impact resistance test of the reflective film 8.

[0029] Specifically, the vertical distance between the impact ball 6 and the upper surface of the base 1 is 250mm, and the impact ball 6 is a solid steel ball with a mass of 450.0g±4.5g.

[0030] In one embodiment, the locking device 3 specifically includes a pressure plate 31 and a thumb-type locking device 32 disposed on the pressure plate 31 and the base 1. The thumb-type locking device 32 presses and fixes the pressure plate 31 and the reflective film 8 below the pressure plate 31 to the base 1 (e.g., Figure 2 (As shown). By using the thumb-type locking device 32 and the pressure plate 31 to press and lock the reflective film 8, it is convenient and quick to press and lock / release the reflective film 8. Simply press down and rotate the thumb-type locking device 32, thus making the testing process convenient and efficient.

[0031] The thumb-type locking device 32 is an existing device, and its specific structure and locking principle will not be described in detail here.

[0032] In one embodiment, the V-groove magnetic clamp 5 includes an electromagnet and a switch knob 51 for controlling the energization of the electromagnet. Before testing, the tester is powered on, and the switch knob 51 is pointed to "ON", which makes the electromagnet magnetic. At this time, the impact ball 6 is magnetically attracted and fixed to the bottom of the V-groove magnetic clamp 5. When testing is required, the switch knob 51 is rotated to point to "OFF", which de-energizes the electromagnet, causing it to lose its magnetism and allowing the impact ball 6 at the bottom of the V-groove magnetic clamp 5 to fall freely.

[0033] In one embodiment, a fence 7 is also included, which is disposed on the base 1, and gaps are reserved between the fence 7 and the base 1 on both sides near the locking device 3. The fence 7 can be used to restrict the impact ball 6, so that the impact ball 6 remains on the test platform after the test is completed, so as to facilitate repeated testing.

[0034] In addition, gaps are reserved between the fence 7 and the base 1 on both sides near the locking device 3 so that the reflective film 8 can pass through the gaps and go under the locking device 3 so that the locking device 3 can press and fix the reflective film 8.

[0035] In one embodiment, the base 1 is made of a steel plate with a quenched and tempered surface. Using a quenched and tempered steel plate for the base 1 significantly improves the structural stability and testing accuracy of the testing instrument. The quenching and tempering treatment gives the steel plate a uniform high hardness and toughness, enabling it to withstand the instantaneous high stress generated by repeated impacts from the impact ball 6, preventing deformation or localized dents in the base 1 and ensuring the flatness of the testing reference surface. Furthermore, by optimizing the internal stress of the material, the fatigue strength of the base 1 is enhanced, extending the service life of the equipment.

[0036] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A road traffic reflective film impact resistance tester, characterized in that, The road traffic reflective film impact resistance tester includes: Base; A horizontal bubble, wherein the horizontal bubble is disposed on the base; A locking device is provided on the base and is used to press and fix the edge of the reflective film. A bracket, which is disposed on the base; V-groove magnetic clamp, wherein the V-groove magnetic clamp is disposed on the bracket; An impact ball is attached and fixed to the bottom of the V-groove magnetic clamp under magnetic force.

2. The road traffic reflective film impact resistance tester according to claim 1, characterized in that: The locking device specifically includes a pressure plate and a thumb-type locking device disposed on the pressure plate and the base. The thumb-type locking device presses and fixes the pressure plate and the reflective film below the pressure plate to the base.

3. The road traffic reflective film impact resistance tester according to claim 1, characterized in that: The vertical distance between the impact ball and the upper surface of the base is 250mm.

4. The road traffic reflective film impact resistance tester according to claim 1, characterized in that: The V-groove magnetic clamp includes an electromagnet and a switch knob for controlling the energization of the electromagnet.

5. The road traffic reflective film impact resistance tester according to claim 1, characterized in that: It also includes a fence, which is set on the base, and gaps are reserved between the fence and the base on both sides near the locking device.

6. The road traffic reflective film impact resistance tester according to claim 1, characterized in that: The base is made of steel plate with a surface quenching and tempering treatment.

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