Automatic drop hammer impact test device capable of preventing secondary impact and used for lighting product

Abstract

The invention discloses a lighting product automatic drop hammer impact test device capable of preventing secondary impact, which comprises a platform for placing a sample to be tested, and also comprises a first liftable slide block, a clamping part, a quick release bracket, a sleeve, a drop hammer and an arc-shaped electromagnet, and is characterized in that the clamping part is connected with the first liftable slide block and clamps the quick release bracket; the vertical sleeve is installed in the quick release support, the drop hammer is arranged at an inlet in the upper end of the sleeve, the arc-shaped electromagnet is arranged on one side of the lower portion of the sleeve, and a wireless vibration sensor communicating with the wireless vibration triggering suction module is arranged on the surface of the tested sample. An adjusting screw rod used for adjusting the perpendicularity of the sleeve is arranged on the lower portion of the quick release support, the adjusting screw rod is connected with a second lifting sliding block, and the first lifting sliding block and the second lifting sliding block are movably installed on a vertically-arranged guide rod. According to the invention, secondary impact of the drop hammer after an impact test can be effectively prevented.

Description

Technical Field

[0001] The invention relates to the field of lighting product testing, and in particular to an automated drop hammer impact test device for lighting products that is resistant to secondary impact. Background Art

[0002] The drop weight impact test device is an important device for determining the impact resistance of materials. In the prior art, when the drop weight impact test device is testing, the following may occur:

[0003] 1. The falling weight rebounds after the first impact, causing secondary or more impacts, which affects the accuracy and reliability of the test results.

[0004] 2. During the test, manual intervention is required to calculate, adjust and measure the drop height based on the impact energy, which affects the test efficiency.

[0005] 3. For lighting products, since their impact test parts include fragile materials such as glass and plastic, fragments may be generated during impact. If operated at close range, the fragments may fly and injure people, affecting the personal safety of the testers. Summary of the invention

[0006] The object of the present invention is to provide an automated drop-hammer impact test device for lighting products that can effectively prevent secondary impacts caused by the drop-hammer after the impact test, thereby improving the accuracy and reliability of the test results.

[0007] The technical solution of the present invention is as follows:

[0008] An automated drop-hammer impact test device for lighting products to prevent secondary impacts, comprising a platform for placing a sample to be tested, and also comprising a first liftable slider, a clamping portion, a quick-release bracket, a sleeve, a drop hammer and an arc-shaped electromagnet, wherein the clamping portion is connected to the first liftable slider and clamps the quick-release bracket, the vertical sleeve is installed in the quick-release bracket, the drop hammer is arranged at the upper entrance of the sleeve, the arc-shaped electromagnet is arranged on one side of the lower part of the sleeve, and the lower end outlet of the sleeve is directly facing the sample to be tested, the arc-shaped electromagnet is controlled to be powered on and off by a wireless vibration triggering suction module, the arc-shaped electromagnet and the wireless vibration triggering suction module are both fixedly arranged on the quick-release bracket, the surface of the sample to be tested is provided with a wireless vibration sensor that communicates with the wireless vibration triggering suction module, the lower part of the quick-release bracket is provided with an adjusting screw for adjusting the verticality of the sleeve, the adjusting screw is connected to a second liftable slider, and the first liftable slider and the second liftable slider are movably mounted on a vertically arranged guide rod.

[0009] According to the test device of the present invention, during the test process, at the moment when the falling hammer falls along the sleeve and impacts the surface of the sample to be tested and rebounds, the wireless vibration sensor detects the vibration signal and sends it to the wireless vibration triggering attraction module, the contactor in the wireless vibration triggering attraction module is closed, and the arc-shaped electromagnet is energized to attract the falling hammer, thereby preventing a secondary impact on the surface of the sample to be tested, thereby improving the accuracy and reliability of the test results.

[0010] The quick-release bracket of the present invention is also provided with an electromagnetic telescopic module and an electromagnetic telescope. The electromagnetic telescopic module controls the telescopic rod of the electromagnetic telescope to extend and retract, so that the telescopic rod of the electromagnetic telescope can extend into the sleeve to block the falling weight. During the impact test, the telescopic rod of the electromagnetic telescope is retracted, and the falling weight falls in a free fall motion.

[0011] The sleeve of the present invention is provided with a distance measuring sensor, which is used to monitor the distance between the starting point of the falling hammer and the surface of the sample to be tested, so as to know the falling height of the falling hammer during the impact test.

[0012] The sleeve of the present invention is provided with an inclination sensor for monitoring the verticality of the sleeve. According to the monitored value of the verticality of the sleeve, the sleeve can be quickly adjusted to a vertical direction by adjusting the horizontal length of the adjusting screw.

[0013] A gear belt is installed on the guide rod of the present invention, and the first liftable slider and the second liftable slider are fixedly installed on the gear belt. The gear belt is connected to a motor through a gear set. The motor generally adopts a stepping motor. The gear belt is driven by the motor to move, and the height of the first liftable slider and the second liftable slider can be synchronously adjusted, thereby realizing automatic adjustment of the height of the quick-release bracket, and adjusting the height of the drop weight in the sleeve to the drop height required for the test.

[0014] The motor of the present invention is installed in a control box, and a battery and an intelligent control module are also installed in the control box. A power switch, a display and an alarm are also provided on the outer wall of the control box. The intelligent control module continuously monitors the current height data of the ranging sensor and calls the pre-recorded drop weight, calculates the current impact energy value, and compares it with the preset required impact energy value. The stepper motor is controlled to work until the motor stops working after reaching the required impact energy, thereby achieving the purpose of automated testing.

[0015] The control box of the present invention is provided with a leveling support at the bottom thereof for adjusting the horizontality of the control box, thereby adjusting the vertical angle of the guide rod, and cooperating with the adjusting screw to adjust the sleeve to the vertical direction.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention can effectively prevent the falling hammer from having a secondary impact after the impact test by attracting the falling hammer through the arc-shaped electromagnet at the moment when the falling hammer impacts the surface of the sample to be tested, thereby improving the accuracy and reliability of the test results.

[0018] 2. The quick-release bracket of the present invention is installed on the guide rod, which can automatically adjust the height of the sleeve and the drop weight, realize automated testing, and improve test efficiency. At the same time, the operator can operate remotely away from the test device to avoid splashing and injuring people when broken materials are tested. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A working principle diagram of an automated drop hammer impact test device for preventing secondary impact for lighting products provided by the present invention.

[0020] Figure 2 A circuit control schematic diagram of an automated drop-hammer impact test device for preventing secondary impact for lighting products provided by the present invention.

[0021] Description of reference numerals:

[0022] 1-first liftable slider; 2-clamping part; 3-quick release bracket; 4-sleeve; 5-adjusting screw; 6-second liftable slider; 7-gear belt; 8-drop hammer; 9-tested sample; 10-platform; 11-arc electromagnet; 12-wireless vibration trigger suction module; 13-wireless vibration sensor; 14-electromagnetic telescopic module; 15-electromagnetic telescope; 16-distance measuring sensor; 17-motor; 18-gear set; 19-control box; 20-battery; 21-intelligent control module; 22-power switch; 23-display; 24-alarm; 25-leveling support; 26-tilt sensor. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the present invention more obvious, the exemplary embodiments according to the present invention will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments of the present invention, and it should be understood that the present invention is not limited to the exemplary embodiments described herein. Based on the embodiments of the present invention described in the present invention, all other embodiments obtained by those skilled in the art without creative work should fall within the protection scope of the present invention.

[0024] In the following description, a large number of specific details are provided to provide a more thorough understanding of the present invention. However, it is apparent to those skilled in the art that the present invention can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present invention, some technical features well known in the art are not described.

[0025] It should be understood that the present invention can be implemented in different forms and should not be interpreted as limited to the embodiments set forth herein. On the contrary, these embodiments are provided to make the disclosure thorough and complete and to fully convey the scope of the present invention to those skilled in the art.

[0026] The purpose of the terms used herein is only to describe specific embodiments and is not intended to be limiting of the present invention. When used herein, the singular forms "one", "an" and "said / the" are also intended to include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "consisting of" and / or "comprising", when used in this specification, determine the presence of the features, integers, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, parts and / or groups. When used herein, the term "and / or" includes any and all combinations of the relevant listed items.

[0027] In order to fully understand the present invention, a detailed structure will be proposed in the following description to illustrate the technical solution proposed by the present invention. The optional embodiments of the present invention are described in detail as follows, but in addition to these detailed descriptions, the present invention may also have other implementations.

[0028] like Figure 1 and Figure 2 As shown, an automated drop hammer impact test device for preventing secondary impact for lighting products includes a platform 10 for placing a sample to be tested. Because the platform 10 is used for impact testing of lighting products, a nylon plate is preferably used. Parameters such as the hardness and thickness of the nylon plate are selected according to standard requirements. It also includes a first liftable slider 1, a clamping part 2, a quick-release bracket 3, a sleeve 4, a drop hammer 8 and an arc-shaped electromagnet 11. The clamping part 2 is connected to the first liftable slider 1 and clamps the quick-release bracket 3. A vertical sleeve 4 is installed in the quick-release bracket 3. A drop hammer 8 is arranged at the upper inlet of the sleeve 4. An arc-shaped electromagnet 11 is arranged on one side of the lower part of the sleeve 4. The lower outlet of the sleeve 4 faces the sample 9 to be tested. The arc-shaped electromagnet 11 controls the power on and off through the wireless vibration triggering suction module 12. The arc-shaped electromagnet 11 and the wireless vibration triggering suction module 12 are both fixedly arranged on the quick-release bracket 3. A wireless vibration sensor 13 communicating with the wireless vibration triggering suction module 12 is arranged on the surface of the sample 9 to be tested. An adjusting screw 5 for adjusting the verticality of the sleeve 4 is arranged at the lower part of the quick-release bracket 3. The adjusting screw 5 is connected to the second liftable slider 6. The first liftable slider 1 and the second liftable slider 6 are movably mounted on a vertically arranged guide rod.

[0029] In one embodiment, an electromagnetic telescopic module 14 and an electromagnetic telescope 15 are also provided on the quick-release bracket 3. The electromagnetic telescopic module 14 controls the telescopic rod of the electromagnetic telescope 15 to extend so that the telescopic rod of the electromagnetic telescope 15 can extend into the sleeve 4 to block the falling hammer 8. During the impact test, the telescopic rod of the electromagnetic telescope 15 is retracted, and the falling hammer 8 falls in a free fall motion.

[0030] In one embodiment, a distance measuring sensor 16 is provided on the sleeve 4, which is used to monitor the distance between the starting point of the falling hammer 8 and the surface of the sample 9 to be tested, so as to know the falling height of the falling hammer 8 during the impact test.

[0031] In one embodiment, a tilt sensor 26 for monitoring the verticality of the sleeve 4 is provided on the sleeve 4. According to the monitored value of the verticality of the sleeve 4, the sleeve 4 can be quickly adjusted to the vertical direction by adjusting the horizontal length of the adjusting screw 5.

[0032] In one embodiment, a gear belt 7 is installed on the guide rod, and the first liftable slider 1 and the second liftable slider 6 are fixedly installed on the gear belt 7. The gear belt 7 is connected to the motor 17 through a gear set 18. The motor 17 generally adopts a stepping motor. The motor 17 drives the gear belt 7 to move, and the height of the first liftable slider 1 and the second liftable slider 6 can be synchronously adjusted, thereby realizing automatic adjustment of the height of the quick-release bracket 3, and adjusting the height of the drop hammer 8 in the sleeve 4 to the drop height required for the test. In other embodiments, the height adjustment of the first liftable slider 1 and the second liftable slider 6 can also be achieved by a screw transmission mechanism or the like.

[0033] In one embodiment, the motor 17 is installed in a control box 19, and a battery 20 and an intelligent control module 21 are also installed in the control box 19. A power switch 22, a display 23 and an alarm 24 are also provided on the outer wall of the control box 19. The intelligent control module 21 continuously monitors the current height data of the distance sensor 16 and calls the mass of the drop weight 8 pre-entered into the test system, calculates the current impact energy value, and compares it with the preset required impact energy value. The motor 17 drives the gear belt 7 to move to adjust the height of the sleeve 4 and the drop weight 8 until the required impact energy is reached and stops working, thereby achieving the purpose of automated testing.

[0034] In one embodiment, a leveling support 25 is provided at the bottom of the control box 19 for adjusting the horizontality of the control box 19, thereby adjusting the vertical angle of the guide rod, and cooperating with the adjusting screw 5 to adjust the sleeve 4 to the vertical direction.

[0035] In one embodiment, the clamping portion 2 is an adjustable annular steel hoop, the shape of the quick-release bracket 3 is set to be cylindrical, and the quick-release bracket 3 can be disassembled by loosening the annular steel hoop. The sleeve 4 can be set to a replaceable structure according to the test requirements, which is movably placed inside the quick-release bracket 3. The sleeve 4 can be replaced while loosening the annular steel hoop. In the initial state, the lower edge of the sleeve 4 is generally about 10 mm away from the surface of the sample to be tested. During the test, press the power switch 22, the battery 20 supplies power, the display 23 and the intelligent control module 21 are powered on for self-test. At this time, if the verticality parameter of the sleeve 4 read by the inclination sensor 26 exceeds the preset range, the alarm 24 starts the alarm. The sleeve 4 can be adjusted to a vertical state by adjusting the screw 5 and the leveling support 25. Afterwards, the intelligent control module 21 calls the mass of the drop hammer 8 preset by the system and the local gravity acceleration, and reads the current drop height of the drop hammer 8 through the distance sensor 16, automatically calculates the impact energy value of the current free fall of the drop hammer 8, compares the calculated value with the impact energy value required for the test, and then adjusts the height of the first liftable slider 1 and the second liftable slider 6 so that the calculated value is finally equal to the impact energy value required for the test. The adjustment process before the impact test is automatically completed. The intelligent control module 21 sends a switch command to start the test. After the electromagnetic telescopic module 14 obtains the command signal, it controls the telescopic rod of the electromagnetic telescopic device 15 to retract instantly, and the drop hammer 8 falls. When the drop hammer 8 impacts the surface of the sample 9 to be tested and rebounds, the wireless vibration sensor 13 sends a signal, the wireless vibration triggers the suction module 12 contactor to receive the signal and its contactor is closed, the arc electromagnet 11 is energized to attract the drop hammer 8, and the drop hammer 8 is fixed, so that there will be no secondary impact on the sample 9 to be tested.

[0036] It is advisable to adopt enclosure measures at the test site, such as using acrylic baffles, and non-related test personnel should evacuate to a range of 2 meters.

[0037] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. An automated drop weight impact test device for lighting products to prevent secondary impact, comprising a platform for placing a sample to be tested, characterized in that: The device further comprises a first liftable slider, a clamping portion, a quick-release bracket, a sleeve, a drop weight and an arc-shaped electromagnet, the clamping portion being connected to the first liftable slider and clamping the quick-release bracket, the vertical sleeve being installed in the quick-release bracket, the drop weight being arranged at the upper inlet of the sleeve, the arc-shaped electromagnet being arranged at one side of the lower part of the sleeve, the lower outlet of the sleeve being directly opposite to the sample to be tested, the arc-shaped electromagnet being controlled to be powered on and off by a wireless vibration-triggered suction module, the arc-shaped electromagnet and the wireless vibration-triggered suction module being fixedly arranged on the quick-release bracket, the surface of the sample to be tested being provided with a wireless vibration sensor which communicates with the wireless vibration-triggered suction module, an adjusting screw being arranged at the lower part of the quick-release bracket for adjusting the verticality of the sleeve, the adjusting screw being connected to the second liftable slider, the first liftable slider and the second liftable slider being movably mounted on a vertically arranged guide rod.

2. The automatic drop weight impact test device for secondary impact protection of lighting products according to claim 1, characterized in that: The quick-release bracket is also provided with an electromagnetic telescopic module and an electromagnetic telescope, and the electromagnetic telescopic module controls the telescopic rod of the electromagnetic telescope to extend and retract, so that the telescopic rod of the electromagnetic telescope can extend into the interior of the sleeve to block the falling weight.

3. The automatic drop weight impact test device for lighting products against secondary impact according to claim 1, characterized in that: The sleeve is provided with a distance measuring sensor.

4. The automatic drop weight impact test device for lighting products against secondary impact according to claim 1, characterized in that: The sleeve is provided with an inclination sensor for monitoring the verticality of the sleeve.

5. The automatic drop weight impact test device for secondary impact protection of lighting products according to claim 1, characterized in that: A gear belt is installed on the guide rod, the first liftable slider and the second liftable slider are fixedly installed on the gear belt, and the gear belt is connected to a motor through a gear set.

6. The automated drop weight impact test device for secondary impact protection of lighting products according to any one of claims 2 to 5, characterized in that: The motor is installed in a control box, in which a battery and an intelligent control module are also installed. A power switch, a display and an alarm are also arranged on the outer wall of the control box.

7. The automatic drop weight impact test device for secondary impact protection of lighting products according to claim 6, characterized in that: A leveling support is arranged at the bottom of the control box.

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