CN103162929B - Lamp impact test device and method of testing - Google Patents

Lamp impact test device and method of testing Download PDF

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Publication number
CN103162929B
CN103162929B CN201110426029.2A CN201110426029A CN103162929B CN 103162929 B CN103162929 B CN 103162929B CN 201110426029 A CN201110426029 A CN 201110426029A CN 103162929 B CN103162929 B CN 103162929B
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CN
China
Prior art keywords
crash box
light fixture
piston
impact test
lamp
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201110426029.2A
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Chinese (zh)
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CN103162929A (en
Inventor
周明杰
杜勇强
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Oceans King Lighting Science and Technology Co Ltd
Shenzhen Oceans King Lighting Engineering Co Ltd
Original Assignee
Oceans King Lighting Science and Technology Co Ltd
Shenzhen Oceans King Lighting Engineering Co Ltd
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Publication date
Application filed by Oceans King Lighting Science and Technology Co Ltd, Shenzhen Oceans King Lighting Engineering Co Ltd filed Critical Oceans King Lighting Science and Technology Co Ltd
Priority to CN201110426029.2A priority Critical patent/CN103162929B/en
Publication of CN103162929A publication Critical patent/CN103162929A/en
Application granted granted Critical
Publication of CN103162929B publication Critical patent/CN103162929B/en
Expired - Fee Related legal-status Critical Current
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Abstract

The invention belongs to light fixture technical field of measurement and test, it is provided that a kind of lamp impact test device and method of testing.Above-mentioned test device includes base, guiding trestle, shock platform and crash box, and base is fixedly installed linker, and linker includes communicating pipe and is vertically slideably positioned in first piston and second piston at communicating pipe two ends;Guiding trestle is vertically arranged and its lower end is fixedly connected on base, clashes into platform and is slideably positioned on guiding trestle, and clashes into platform fixing connection first piston, and the second piston is provided with balancing weight;Crash box is slideably positioned in guiding trestle, and the upper end of guiding trestle is provided with Power Component.Above-mentioned lamp impact test method, utilizes above-mentioned impact test device to carry out.A kind of lamp impact test method provided by the invention and test device, it well simulates the be hit waveform of power of light fixture is situation during sine wave, and whether the intensity that can evaluate lamp mounting bracket and lamp interior structural member rapidly and accurately meets actually used.

Description

Lamp impact test device and method of testing
Technical field
The invention belongs to light fixture technical field of measurement and test, particularly relate to a kind of lamp impact test device and method of testing.
Background technology
Light fixture, as the electrical equipment of a kind of indispensability, is widely used in each occasion.At present, light fixture is arranged on mobile vehicle (such as locomotive) in a large number, light fixture can be subject to the big amplitude of various unexpected low frequency and clash into (such as the collision between locomotive, emergency brake etc.), these clash into and the installation position of light fixture, internal structure are constituted very big threat, it is possible to cause that light fixture damages.Therefore, in the R&D process of light fixture, the intensity of lamp installation position, inner structural members intensity be the technical parameter that have to investigate.Imitating the big amplitude of low frequency to clash into, to assess lamp mounting bracket intensity, the reliability of inner structural strength just seems extremely important.
In prior art, the method that the intensity of assessment fitting structure adopts is to be fixed on installation position by light fixture, loads the weight of light fitting quality four times, maintains one hour, observe whether support deforms, judge the intensity of support on light fixture.The method emulator is low, it is actually used to reflect whether lamp bracket intensity meets truly, and can not reflect whether the intensity of lamp interior structural member meets actually used, test result is inaccurate, causes that the light fixture developed can not meet actually used demand.
Summary of the invention
It is an object of the invention to provide a kind of lamp impact test device and method of testing, solve that test result of the prior art is inaccurate, can not reflect whether lamp bracket intensity meets the technical problems such as actual operation requirements truly.
The present invention is realized in, a kind of lamp impact test device, including base, guiding trestle, shock platform and for fixing the crash box of light fixture, described base is fixedly installed linker, described linker includes communicating pipe and is slideably positioned in first piston and second piston at two ends of described communicating pipe, described first piston and the second piston vertically slide setting, are provided with hydraulic oil in described communicating pipe;Described guiding trestle is vertically arranged and its lower end is fixedly connected on described base, and described shock platform is slideably positioned on described guiding trestle, and the described shock platform described first piston of fixing connection, and described second piston is provided with balancing weight;Described crash box is slideably positioned on guiding trestle and is positioned at the top place of described shock platform, and the upper end of described guiding trestle is provided with the Power Component for promoting described crash box.
Described communicating pipe is "U" shaped, and its two ends are all in being vertically arranged.
Described second piston is fixedly connected with the pallet for placing balancing weight.
The bottom thread of described base is connected to multiple spikes.
Described guiding trestle includes at least two lead, and described lead is distributed in around described shock platform and crash box, and described shock platform and the equal slip cap of crash box are located on described lead.
The side of described crash box is fixedly welded with pipe box, and described pipe box slides and is located on described lead.
Described Power Component is connected on described crash box by lifting cable, is provided with the latch components for being connected or unclamp described crash box between described lifting cable and crash box.
Described latch components includes suspension ring, latch and pin bushing, and described suspension ring are fixedly installed on crash box and described Power Component one end in opposite directions, and described pin bushing is connected to described lifting cable, and described latch is actively located in described suspension ring and pin bushing.
The upper end of described guiding trestle is fixedly connected with gripper shoe, and described Power Component includes motor and capstan winch, and described motor is fixed in described gripper shoe, and described capstan winch is fixedly connected in the rotating shaft of described motor, and described lifting cable is set around on described capstan winch.
Present invention also offers a kind of lamp impact test method, utilize above-mentioned impact test device, comprise the following steps, calculate the weight of weight-the second piston of the weight+first piston of the weight=impulsive force/acceleration of gravity+shock platform of balancing weight, and the balancing weight of corresponding weight is set on the second piston, wherein impulsive force F=m*a, m are the weight of light fixture, the acceleration that speed when a is be impacted by light fixture and pulse width calculate;
Installation direction and light fixture light fixture when being subject to rigidity collision according to light fixture bear the direction of Impact energy, light fixture is fixed on crash box, and described light fixture bears the vertical described shock platform in direction of Impact energy;
By Power Component, crash box and light fixture are promoted to height set in advance along guiding trestle;
Unclamp described crash box, make described crash box free fall under gravity and strike against on shock platform;
Observe, analyze whether light fixture damages.
Lamp impact test device provided by the invention and method of testing, it is by arranging linker, clash into platform and crash box, well simulating the be hit waveform of power of light fixture is situation during sine wave, sine wave Impact energy is passed to light fixture with inertia, with the component of the support of Testing lamp and inside thereof be subject to impact force waveform for sine wave time crash-proof ability, simulating light fixture truely and accurately, to be subject to impact force waveform on carrier (such as locomotive) be truth during sine wave, test result accuracy is high, whether the intensity that can evaluate lamp mounting bracket and lamp interior structural member rapidly and accurately meets actually used.
Accompanying drawing explanation
In order to be illustrated more clearly that technical scheme, the accompanying drawing used required in embodiment will be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the lamp impact test device assembling schematic perspective view that the embodiment of the present invention provides.
Fig. 2 is A place close-up schematic view in Fig. 1.
Fig. 3 be the lamp impact test device that the embodiment of the present invention provides assembling in the partial schematic diagram at spike place.
Fig. 4 is another assembling schematic perspective view of the lamp impact test device that the embodiment of the present invention provides.
Fig. 5 is the front view of the lamp impact test device that the embodiment of the present invention provides.
Fig. 6 is the right view of the lamp impact test device that the embodiment of the present invention provides.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described.
As shown in Figure 1, a kind of lamp impact test device that the embodiment of the present invention provides, including base 9, guiding trestle 2, clash into platform 1 and for fixing the crash box 3 of light fixture, described base 9 is fixedly installed linker 8, described linker 8 includes communicating pipe 81 and is slideably positioned in first piston (not shown) and the second piston (not shown) at two ends of described communicating pipe 81, first piston and the second piston vertically slide setting, are provided with hydraulic oil (not shown) in described communicating pipe 81;Described guiding trestle 2 is vertically arranged and its lower end is fixedly connected on described base 9, and described shock platform 1 is slideably positioned on described guiding trestle 2, and the described shock platform 1 described first piston of fixing connection, and described second piston is provided with balancing weight 82;Described crash box 3 is slideably positioned on guiding trestle 2 and is positioned at the top place of described shock platform 1, and the upper end of described guiding trestle 2 is provided with the Power Component 4 for promoting described crash box 3.
As shown in Fig. 1~Fig. 2, when carrying out lamp impact test, first analyze light fixture installation direction in actual use, then analyze light fixture light fixture when being subject to rigidity collision and bear the direction of Impact energy.Then light fixture is fixed on crash box 3, and makes the direction that light fixture bears Impact energy vertically clash into the direction of platform 1.Then pass through Power Component 4 and crash box 3 and light fixture thereon are promoted to suitable height along guiding trestle 2, then crash box 3 is unclamped, make crash box 3 free-falling under gravity together with light fixture, crash box 3 strikes against on shock platform 1, the energy clashed into can conduct to the component of lamp bracket and lamp interior, clashing into platform 1 and will promote first piston slide downward, the second piston promotes balancing weight 82 to move upward simultaneously.nullThe action of gravity of balancing weight 82 makes the second piston produce downward power on the second piston,By linker 8 principle,First piston is subjected to power upwards,Provide an active force upwards to the platform 1 that clashes into moved downward,This power is constant force,After clashing into platform 1 and crash box 3 shock,The speed of its slide downward can be more and more less,Acceleration is more and more less,Its external force being subject to is more and more less,A constant force upwards is applied to clashing into platform 1 by balancing weight 82 and linker 8,Well simulating the be hit waveform of power of light fixture is situation during sine wave,Sine wave Impact energy is passed to light fixture with inertia,With the component of the support of Testing lamp and inside thereof be subject to impact force waveform for sine wave time crash-proof ability,Simulating light fixture truely and accurately, to be subject to impact force waveform on carrier (such as locomotive) be truth during sine wave,Test result accuracy is high,Whether the intensity that can evaluate lamp mounting bracket and lamp interior structural member rapidly and accurately meets actually used.
Hereinafter each ingredient of the present invention is described in detail.
Specifically, as shown in Figure 1 and Figure 5, communicating pipe 81 adopts steel pipe to make, and communicating pipe 81 is in "U" shaped, its two ends are all in being vertically arranged, and first piston and the second piston are slideably positioned in the longitudinal section at communicating pipe 81 two ends respectively, and hydraulic oil is closed between first piston and the second piston, to transmit the energy impacted, imitate light fixture exactly and be subject to situation when sine wave collides.
Further, as shown in Figure 1 and Figure 4, described second piston being fixedly connected with the pallet 83 for placing balancing weight 82, the lower end of pallet 83 is fixedly connected with the second connecting rod 84, and described second connecting rod 84 is fixedly connected on the upper end of the second piston.Can different balancing weights 82 be positioned in pallet 83, in concrete application, can calculate for different light fixtures, different impact events and select the balancing weight 82 of approrpiate wts.
Specifically, as it is shown in figure 1, the upper end-face edge of pallet 83 is convexly equipped with surrounding edge 831, it is prevented that balancing weight 82 thereon landing.
Specifically, as shown in Figure 1 and Figure 5, described base 9 can adopt steel plate to make, its upper end is used for fixed guide support 2 and linker 8 etc., and lower end is threaded multiple spikes 71, and a spike 71 can be used for adjusting the levelness of base 9, so that base 9 keeps level, crash box 3 can drop and strike against shock platform 1 upper end under gravity swimmingly along guiding trestle 2, and structural reliability is high, is beneficial to the accuracy improving test.
Specifically, as shown in figures 1 and 3, described spike 71 is provided with multiple, and a spike 71 is screw, and is threadedly connected to the bottom of base 9.By adjusting a spike 71, shock platform 1 just can be made to be the level of state, adjust process very convenient.
In concrete application, as shown in figures 1 and 3, the bottom welding of described base 9 has angular support frame 72, angular support frame 72 is welded with junction steel plate 73, at a distance of arranging between bottom junction steel plate 73 and base 9, offering screwed hole (not shown) on junction steel plate 73, a spike 71 is threadedly connected in this screwed hole.Angular support frame 72, for being separated the bottom of junction steel plate 73 with base 9, so that a spike 71 obtains bigger adjustment space, and is beneficial to the overall weight alleviating test device.
Specifically, as shown in Figure 1 and Figure 4, described guiding trestle 2 includes at least two lead 21, and described lead 21 is distributed in around described shock platform 1 and crash box 3, and described shock platform 1 and the equal slip cap of crash box 3 are located on described lead 21.Lead 21 is cylindrical, and the upper surface being welded in base 9 is fixed in its lower end, makes crash box 3 and shock platform 1 can slide along lead 21.Certainly, guiding trestle 2, it can also be provided that tabular or surround the peripheral frame shape etc. outside crash box 3, belongs to protection scope of the present invention.
Specifically, as shown in Figure 1 and Figure 4, described crash box 3 is in box like, and its structural strength is high, and the energy clashed between crash box 3 and shock platform 1 can be efficiently transfer on its interior light fixture.Light fixture is fixedly installed in crash box 3, even if light fixture damages under clashing into, the element being scattered is without sputtering outside crash box 3, and structural reliability is high.Crash box 3 includes side, four, front, rear, left and right, in the present embodiment, lead 21 is provided with three, lead 21 can adopt diameter to be that 30mm, the long rod iron for 1500mm are made, three leads 21 are arranged in triangle disposition, it is respectively arranged at three sides place of crash box 3, and specifically, lead 21 is respectively provided with the left side of crash box 3, right side and the back side.Another side (i.e. front) of crash box 3 offers installation window 31, and light fixture is fixed in crash box 3 from this installation window 31, and can observe light fixture in the situation clashing into moment by installation window 31.Further, it is possible in the hinged protective door (not shown) in this installation window 31 place, protective door can adopt the transparent material of high intensity to make.The another side (i.e. the back side of crash box 3) that crash box 3 is relative with offering the side installing window 31, offer the installing hole for fixing light fixture or/and mounting groove 32, installing hole and mounting groove 32 can be provided with multiple rows of, its concrete size, quantity can be determined according to truth situation, with the light fixture of fixing different types.Additionally, the quantity of lead 21 and the structure of guiding trestle 2 can be determined according to practical situation, belong to protection scope of the present invention.
In the present embodiment, as shown in Figure 1 and Figure 4, Plate Welding growth 360mm that described crash box 3 adopts thickness to be 5mm, wide 230mm, high 400mm cuboid, offer a long 300~320mm in front, the rectangle of wide 250~280mm installs window 31;Offer the mounting groove 32 that three row's width are 8~10mm overleaf, be used for fixing light fixture.
Specifically, as shown in Figure 1 and Figure 4, the side of described crash box 3 is fixedly welded with pipe box 33, and described pipe box 33 slides and is located on described lead 21, and pipe box 33 can adopt steel pipe to block and form, and its longitudinally disposed and by welding mode is fixed on the outside of crash box 3.
Specifically, as shown in Figure 1 and Figure 5, described shock platform 1 offering the sliding eye 11 for lead 21 activity traverse, the lower end clashing into platform 1 is fixedly connected with head rod 86, and head rod 86 is fixedly connected on the upper end of the second piston.In the present embodiment, head rod 86 is identical with the weight of the second connecting rod 84.
Specifically, as depicted in figs. 1 and 2, described Power Component 4 is connected on described crash box 3 by lifting cable 5, is provided with the latch components 6 for being connected or unclamp described crash box 3 between described lifting cable 5 and crash box 3.Described latch components 6 includes suspension ring 63, latch 62 and pin bushing 61, and suspension ring 63 are fixedly installed on crash box 3 and Power Component 4 one end in opposite directions, and suspension ring 63 are arranged at the centre of crash box 3 upper end, so that suspension ring 63 overlap with the center of gravity of crash box 3.Pin bushing 61 is connected to lifting cable 5, and latch 62 is actively located in suspension ring 63 and pin bushing 61, so that crash box 3 is connected with lifting cable 5.Latch 62 can adopt diameter to be that 10mm, the long rod iron for 100mm are made, and one end of latch 62 is connected to lanyard (not shown), and lanyard is connected on suspension ring 63 or pin bushing 61, it is prevented that latch 62 is lost.After latch 62 is extracted, suspension ring 63 and pin bushing 61 are separated.After latch 62 inserts suspension ring 63 and pin bushing 61, suspension ring 63 and pin bushing 61 can link together.
More specifically, as depicted in figs. 1 and 2, described pin bushing 61 is in "U" shaped, and it includes two support arms 611 being oppositely arranged, and support arm 611 offers jack (not shown), and suspension ring 63 can stretch between two support arms 611.Two support arms 611 in opposite directions are connected by the lateral connection portion 612 being located thereon end, and lifting cable 5 is connected to the middle section in lateral connection portion 612, and latch 62 is arranged in the jack of the wherein jack of a support arm 611, suspension ring 63 and another support arm 611 successively.
Additionally; described latch components 6 could be arranged to other suitable structure; such as coupling type or clamp-type etc.; belong to protection scope of the present invention; specifically lifting cable 5 can be connected to hook; hook hook is on suspension ring 63, and when linking up with taking-up from suspension ring 63, crash box 3 can move downward under gravity.Or utilizing clip clamping suspension ring 63, when unclamping clip, crash box 3 can move downward under gravity.
Specifically, as shown in Figure 1 and Figure 4, the upper end of described guiding trestle 2 is fixedly connected with gripper shoe 87, Power Component 4 includes motor 41 and capstan winch 42, and motor 41 is fixed in gripper shoe 87 by the locating support 88 of " L " shape, and capstan winch 42 is fixedly connected in the rotating shaft of motor 41, powerful motor selected by motor 41, generally selecting the motor of more than stretchy 50Kg, lifting cable 5 is set around on capstan winch 42, and the end of lifting cable 5 is connected to crash box 3 by latch components 6.Gripper shoe 87 central authorities offer perforation 871, and lifting cable 5 is movable through this perforation 871.Motor 41 can drive capstan winch 42 to rotate, and capstan winch 42 can realize the lifting of crash box 3 by being set around lifting cable 5 thereon.
Specifically, as shown in Figure 4 and Figure 6, described capstan winch 42 is in the form of annular discs, and in the present embodiment, its diameter is 100~120mm, and thickness is 30~40mm.The outboard peripheries of capstan winch 42 offers width and the degree of depth is 20~30mm annular recess 421, and lifting cable 5 is set around in this annular recess 421, and lifting cable 5 can be selected for the steel wire rope that diameter is 3mm, and structural reliability is high.
The embodiment of the present invention additionally provides a kind of lamp impact test method, utilize above-mentioned impact test device, comprise the following steps, weigh the weight m of light fixture, determine speed when light fixture is impacted and pulse width, calculate acceleration a, calculate impulsive force F=m*a, calculate the weight of weight-the second piston of the weight-balancing weight of the weight+first piston of the weight=impulsive force/acceleration of gravity+shock platform of balancing weight 82, and the balancing weight of corresponding weight is set on the second piston, wherein impulsive force F=m*a, m is the weight of light fixture, the acceleration that speed when a is be impacted by light fixture and pulse width calculate.In the present embodiment, the weight of balancing weight 82 need to deduct the weight of pallet 83.By arranging the balancing weight 82 of approrpiate wts, to improve the reliability of test.
Installation direction in actual use and light fixture light fixture when being subject to rigidity collision according to light fixture bear the direction of Impact energy;And light fixture is fixed on crash box 3, and the direction that light fixture bears Impact energy is made vertically to clash into the direction of platform 1;
By Power Component 4, crash box 3 and light fixture are promoted to height set in advance along guiding trestle 2;
Unclamp described crash box 3, make described crash box 3 free fall under gravity and strike against on shock platform 1;Crash box 3 clashes into shock platform 1, clash into platform 1 and crash box 3 synchronizes downward retarded motion, first piston slide downward, correspondingly, second piston promotes balancing weight 82 upward sliding, the gravity of balancing weight 82 passes through linker 8, shock platform 1 is made to be subject to a constant force upwards, along with shock platform 1 and crash box 3 slide down to static, now constant force upwards still acts on shock platform 1, clash into platform 1 and crash box 3 is subject to acceleration upwards, clash into platform 1 will move upward, crash box 3 is also subjected to active force upwards, simulate impulsive force waveform for light fixture being affected time sinusoidal wave situation, research and development for light fixture provide accurately, reliable foundation.
Observing, analyze whether light fixture damages, whether the intensity that can evaluate lamp mounting bracket and lamp interior structural member rapidly and accurately meets actually used.
The above is the preferred embodiment of the present invention; it should be pointed out that, for those skilled in the art, under the premise without departing from the principles of the invention; can also making some improvements and modifications, these improvements and modifications are also considered as protection scope of the present invention.

Claims (10)

1. a lamp impact test device, it is characterized in that, including base, guiding trestle, shock platform and for fixing the crash box of light fixture, described base is fixedly installed linker, described linker includes communicating pipe and is slideably positioned in first piston and second piston at two ends of described communicating pipe, described first piston and described second piston vertically slide setting, are provided with hydraulic oil in described communicating pipe;Described guiding trestle is vertically arranged and its lower end is fixedly connected on described base, and described shock platform is slideably positioned on described guiding trestle, and the described shock platform described first piston of fixing connection, and described second piston is provided with balancing weight;Described crash box is slideably positioned on guiding trestle and is positioned at the top place of described shock platform, and the upper end of described guiding trestle is provided with the Power Component for promoting described crash box.
2. lamp impact test device according to claim 1, it is characterised in that described communicating pipe is "U" shaped, its two ends are all in being vertically arranged.
3. lamp impact test device according to claim 1, it is characterised in that be fixedly connected with the pallet for placing balancing weight on described second piston.
4. lamp impact test device according to claim 1, it is characterised in that the bottom thread of described base is connected to multiple spikes.
5. lamp impact test device according to claim 1, it is characterized in that, described guiding trestle includes at least two lead, and described lead is distributed in around described shock platform and crash box, and described shock platform and the equal slip cap of crash box are located on described lead.
6. lamp impact test device according to claim 5, it is characterised in that the side of described crash box is fixedly welded with pipe box, described pipe box slides and is located on described lead.
7. lamp impact test device according to claim 1, it is characterised in that described Power Component is connected on described crash box by lifting cable, is provided with the latch components for being connected or unclamp described crash box between described lifting cable and crash box.
8. lamp impact test device according to claim 7, it is characterized in that, described latch components includes suspension ring, latch and pin bushing, described suspension ring are fixedly installed on crash box and described Power Component one end in opposite directions, described pin bushing is connected to described lifting cable, and described latch is actively located in described suspension ring and pin bushing.
9. lamp impact test device according to claim 1, it is characterized in that, the upper end of described guiding trestle is fixedly connected with gripper shoe, described Power Component includes motor and capstan winch, described motor is fixed in described gripper shoe, described capstan winch is fixedly connected in the rotating shaft of described motor, and described lifting cable is set around on described capstan winch.
10. a lamp impact test method, it is characterized in that, utilize the impact test device as described in any one of claim 1 to 9, comprise the following steps, calculate the weight of weight-the second piston of the weight+first piston of the weight=impulsive force/acceleration of gravity+shock platform of balancing weight, and the balancing weight of corresponding weight, wherein impulsive force F=m*a are set on the second piston, m is the weight of light fixture, the acceleration that speed when a is be impacted by light fixture and pulse width calculate;
Installation direction and light fixture light fixture when being subject to rigidity collision according to light fixture bear the direction of Impact energy, light fixture is fixed on crash box, and described light fixture bears the vertical described shock platform in direction of Impact energy;
By Power Component, crash box and light fixture are promoted to height set in advance along guiding trestle;
Unclamp described crash box, make described crash box free fall under gravity and strike against on shock platform;
Observe, analyze whether light fixture damages.
CN201110426029.2A 2011-12-19 2011-12-19 Lamp impact test device and method of testing Expired - Fee Related CN103162929B (en)

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CN107222959B (en) * 2017-06-09 2019-06-25 吉利汽车研究院(宁波)有限公司 Vehicle impact test lighting system

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CN200952971Y (en) * 2006-09-25 2007-09-26 佛山市顺德区顺达电脑厂有限公司 Fixing device
CN201269798Y (en) * 2008-09-25 2009-07-08 英业达股份有限公司 Dropping experiment machine capable of automatically detecting height of article to be measured

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KR20020094663A (en) * 2001-06-12 2002-12-18 현대자동차주식회사 Falling dart impact tester for automobile lower arm
CN200952971Y (en) * 2006-09-25 2007-09-26 佛山市顺德区顺达电脑厂有限公司 Fixing device
CN201269798Y (en) * 2008-09-25 2009-07-08 英业达股份有限公司 Dropping experiment machine capable of automatically detecting height of article to be measured

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