CN201497683U - Speed-adjustable ejection device used in crash tests - Google Patents
Speed-adjustable ejection device used in crash tests Download PDFInfo
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- CN201497683U CN201497683U CN2008201840035U CN200820184003U CN201497683U CN 201497683 U CN201497683 U CN 201497683U CN 2008201840035 U CN2008201840035 U CN 2008201840035U CN 200820184003 U CN200820184003 U CN 200820184003U CN 201497683 U CN201497683 U CN 201497683U
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- catapult
- launching gear
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Abstract
The utility model relates to a speed-adjustable ejection device used in crash tests (see the attached figure), which belongs to the fields of strength dynamic tests, collision simulation experiments and other relative technology. The ejection device mainly comprises two parts, namely a high-speed ejection drive part and an ejection recovery drive part, wherein the high-speed ejection drive part is formed by connecting a gas storage tank (1), a control valve group (2) and an ejection cylinder (3) serially in series; the ejection recovery drive part consists of a control valve (5) and a recovery cylinder (4); and the ejection cylinder and the recovery cylinder are conveniently and flexibly connected through magnetic attraction. The ejection device has the advantages of simple operation, simple and compact structure, higher simulation, and better testing and adjusting performances.
Description
1. technical field
The invention belongs to intensity dynamic test, collision simulation experiment and correlative technology field.
2. background technology
In the industrial test, the platform of a lot of picture impact strength dynamic test tests is arranged, they all need catapult-launching gear at a high speed, and such as car seat headrest strength test platform, the reduced mass of center of percussion is 6.8kg, and the test impact velocity will reach 7m/s.Be difficult to each side requirements such as the satisfied acceleration of testing, speed for common catapult-launching gear.At present, also only there are a few developed country and area can develop such equipment, the domestic correlation test equipment that does not still have independent development and property right in the world.
The general servo apply hydraulic pressure of similar device of external development, noise is big, efficient is low, seriously polluted, and involves great expense.The present invention is directed to the needs in market, abandoned some intrinsic shortcomings of external product, adopt Pneumatic Control Technology, invented the high speed catapult-launching gear of striking experiment, can be used for various continuously or the impulse test of single.
3. summary of the invention
The noise that some impact testing apparatus face on the market is big, efficient is low in order to overcome, seriously polluted and many defectives such as involve great expense, and the invention provides a kind of high speed catapult-launching gear of striking experiment, is used for solving the problems that the impact strength test is faced.The technical scheme that its technical matters that solves the utility model adopts is:
This catapult-launching gear adopts Pneumatic Control Technology, and actuating medium is an air, and convenient sources is inexhaustible, directly enters atmosphere after the use and pollution-free, does not need to be provided with special retracting device; The viscosity of air is very little, and the pressure loss is less, energy-conservation when flowing, and is efficient; Be swift in motion, reaction is fast, and is easy to adjust, safeguards simply, when there is fault in system, gets rid of easily; Simultaneously have the good and low cost and other advantages of working environment adaptability again, preferably resolve the problems that hydraulic servo brings.
In order to solve the problem that control accuracy in the pneumatic transmission is low and be difficult to hold, this device adopts constant voltage control, utilize intelligent pressure sensor accurately to control air pressure in the gas-holder, on launch cylinder, have simultaneously some adjustings, exhaust and cushion hole, after piston rod is crossed vent port promptly near the free movement state, and then stabilized ejection speed.
This catapult-launching gear has following characteristics:
1. the control loop adjustable in pressure is launched loop closed loop constant voltage control, the control accuracy height.
2. the cylinder stroke little (＜600mm), (0～10m/s) is adjustable for speed.Velocity control accuracy height (＜4%) and steady.At the air intake opening place speed micrometering valve is installed, can be to the accurate regulating and controlling of speed.
3. adopt solenoid control, convenient realization electrical control is easy to control robotization.
4. utilize and launch cylinder and reclaim the control of cylinder twin-tub.
5. launch the recovery of cylinder and adopt magnetic pull control, make launch cylinder and reclaim between the cylinder connection with separate more flexible.
The invention has the advantages that:
1. compact conformation, on performance, working pressure is easily controlled and is stable, and acceleration of motion is big, adjustable-speed, control accuracy is high and stable.
2. utilize magnetic pull to launch the recovery control of cylinder.
3. make things convenient for electrical bond control, be easy to realize the control robotization.
4. beneficial effect
5. the present invention can be applicable to shock table and similar requirement is launched above the equipment platform at a high speed.The ejection feature of this adjustable speed ejector is: bump launches part and launches cylinder sequence by gas-holder, operation valve group and bump and connect to form; Clash into recovery section and carry out simply compactness of syndeton by being installed in the strong magnet on the bump head and being contained in the coupling sleeve that reclaims the cylinder piston boom end, be connected with high accuracy displacement sensor on the bump head, clashing into a real-time displacement measures, for follow-up data is handled the feedback precise information, and flow control valve and high-precision intelligent pressure sensor be housed on the gas-holder air inlet pipeline, the control of carrying out the gas-holder charge flow rate and launching pressure, bump launches and has several vent ports above the cylinder and stablize stroke speed simultaneously, adjustment cylinder frictional resistance and adjusting collision buffering, launch the cylinder air inlet place flow control valve is housed, carry out the fine setting control of ejection speed; Reclaim cylinder air inlet/outlet place flow speed control valve all is housed, reclaim on the speed control of stretching out and the withdrawing bump head of cylinder strong magnet is housed, the rotation of bump head when both sides are equipped with guide rail and are prevented to clash into, launch the frictional resistance of a cylinder bump side when bearing being housed reducing to launch, launching cylinder, will to launch cylinder saddle by four long bolts fastening; Reclaim cylinder and be installed in and launch above the cylinder saddle, reclaim the cylinder piston boom end sleeve that connects a bump magnet is housed, easy installation and reliable, pollution-free and be easy to safeguard.
6. description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is a pictorial diagram of the present utility model.
Fig. 2 is a gas control schematic diagram of the present utility model.
Fig. 3 is circuit theory diagrams of the present utility model.
Fig. 4 is the cylinder figure that launches of the present utility model.
Fig. 5 is bump head of the present utility model and coupling part pictorial diagram.
Fig. 6 is magnet of the present utility model and coupling sleeve engineering drawing.
1. sources of the gas among the figure, 2. pneumatic triple piece, 3. solenoid valve, 4. flow speed control valve, 5. Pneumatic valve group, 6. coupling arrangement 7. reclaims cylinder, 8. launches cylinder, 9. gas-holder.
7. embodiment
In Fig. 1, source of the gas 1 is divided into two-way through three linked piece 2, and one the tunnel links to each other with 3 (a) with solenoid valve 3 (c), and other one the tunnel links to each other with gas-holder 9 through solenoid valve 3 (b).Gas-holder 9, Pneumatic valve group 5 and launch cylinder 8 order and be connected in series.Launch the cylinder operation source pressure in through the gas-holder air pressure after twice pressure regulation, air pressure control moves to stablize the pressure of gas-holder by the intelligent pressure sensor control electromagnetic valve.Launch cylinder by the big flow Pneumatic valve action of two threeways of two five-way electromagnetic valves control, ejection speed can be controlled by the controlled pressure sensor, the speed micrometering valve is installed at the air intake opening place can accurately regulates control to speed.Launch cylinder and on cylinder body, have air hole, after piston rod is through the fixed position, just begin near free movement, and then stabilized ejection cylinder travelling speed.Reclaim cylinder and carry out corresponding actions by two five-way electromagnetic valves control, its air pressure directly comes from through the working pressure after the air strainer combination, the controlled speed scope is bigger, and its speed control is to control by two speed governing intercepting valves that are installed in the air inlet/outlet position.The combination of launching cylinder and recovery cylinder is by the interaction between the absorption iron block of magnet that is installed in a bump tool back plane and recovery cylinder piston rod top end.
In embodiment illustrated in fig. 2, after logical the pressure, pressurized air is divided into two-way via pneumatic triple piece 2, one the tunnel is the control loop voltage supply, enter in the gas-holder 9 behind other one tunnel Voltage stabilizing module of forming via a solenoid valve 3 (b) and intelligent pressure sensor, after pressure reached the pressure transducer setting value in the gas-holder 9, sensor output high level made the solenoid valve action.At this moment, pressure stability is at the pressure of sensor settings in the gas-holder, and gas-holder 9 is storing huge energy.
In the control loop, during normality, (a b) all is in power failure state to two solenoid valves 3: launch the loop and be in off-state, reclaim cylinder 7 and be in contraction state.When launch circuit electromagnetic valve 3 (c) receive be in when launching control command electricity condition, launch the loop and connect, the instantaneous outburst of the huge energy that stores in the gas-holder makes launches cylinder 8 and launches away at a high speed, makes then to launch circuit electromagnetic valve 3 (c) and reset.Then as required, to reclaiming control electromagnetic valve 3 (a) transmitting control commands, reclaim cylinder 7 and promptly stretch out, when piston rod iron sleeve and bump head are gone up after magnetic pull couples together both between the magnet, make and reclaim control electromagnetic valve and reset, then reclaim cylinder and will haul the bump head and return initial position.
In the embodiment shown in fig. 4, launch and have some vent ports above the cylinder, play the effect of stabilized ejection speed and adjusting collision buffering on the one hand; Also can when piston rod and cylinder frictional resistance are excessive, come balance air pressure and frictional resistance on the other hand by regulating vent port.Embodiment is: cylinder front end vent port (1) is used for regulating the cylinder buffering effect; Vent port (2) (3) is used for regulating piston bar tail end thrust in order to the frictional resistance between balance piston bar and the cylinder; Vent port (4) is used for stabilized ejection speed.
8. using method
Before the test, at first checkout facility pipeline line has or not damage gas leakage, change respective line if any damaging, be the equipment energising then, setting sensor pressure, follow pneumatic source of the gas, make the control loop stable gas pressure between 0.45～0.55MPa, can carry out test experiments then by regulating pneumatic triple piece.In the debugging, can regulate flow speed control valve as required, make and launch cylinder and reclaim cylinder with more satisfactory speed operation.Experiment finishes, and the equipment that launches is noted protecting in the site clearing.
Claims (9)
1. according to the described striking experiment adjustable speed of claim catapult-launching gear, it is characterized in that: bump launches part and launches cylinder sequence by gas-holder, operation valve group and bump and connect to form.
2. according to the described striking experiment adjustable speed of claim catapult-launching gear, it is characterized in that: the bump recovery section is connected with the coupling sleeve that is contained in recovery cylinder piston boom end by the strong magnet that is installed on the bump head.
3. according to the described striking experiment adjustable speed of claim catapult-launching gear, it is characterized in that: be connected with high accuracy displacement sensor on the bump head, clash into a real-time displacement and measure, for follow-up data is handled the feedback precise information.
4. according to the described striking experiment adjustable speed of claim catapult-launching gear, it is characterized in that: flow control valve and high-precision intelligent pressure sensor are housed, the control of carrying out the gas-holder charge flow rate and launching pressure on the gas-holder air inlet pipeline.
5. according to the described striking experiment adjustable speed of claim catapult-launching gear, it is characterized in that: bump launches and has several vent ports above the cylinder and stablize stroke speed, adjustment cylinder frictional resistance and adjusting collision buffering.
6. according to the described striking experiment adjustable speed of claim catapult-launching gear, it is characterized in that: launch the cylinder air inlet place flow control valve is housed, carry out the fine setting control of ejection speed.
7. according to the described striking experiment adjustable speed of claim catapult-launching gear, it is characterized in that: reclaim cylinder air inlet/outlet place flow speed control valve all is housed, reclaim the speed control of stretching out and withdrawing of cylinder.
8. according to the described striking experiment adjustable speed of claim catapult-launching gear, it is characterized in that: on the bump head strong magnet is housed, the rotation of bump head when both sides are equipped with guide rail and are prevented to clash into.
9. according to the described striking experiment adjustable speed of claim catapult-launching gear, it is characterized in that: launch the frictional resistance of a cylinder bump side when bearing being housed reducing to launch, launching cylinder, will to launch cylinder saddle by four long bolts fastening; The recovery cylinder is installed in and launches above the cylinder saddle, reclaims the cylinder piston boom end sleeve that connects a bump magnet is housed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008201840035U CN201497683U (en) | 2008-12-31 | 2008-12-31 | Speed-adjustable ejection device used in crash tests |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008201840035U CN201497683U (en) | 2008-12-31 | 2008-12-31 | Speed-adjustable ejection device used in crash tests |
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| Publication Number | Publication Date |
|---|---|
| CN201497683U true CN201497683U (en) | 2010-06-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008201840035U Expired - Fee Related CN201497683U (en) | 2008-12-31 | 2008-12-31 | Speed-adjustable ejection device used in crash tests |
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| CN (1) | CN201497683U (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103308267A (en) * | 2012-03-16 | 2013-09-18 | 鸿富锦精密工业（深圳）有限公司 | Impact testing device |
| CN103712765A (en) * | 2013-12-30 | 2014-04-09 | 北京航空航天大学 | Impact testing machine |
| CN106184782A (en) * | 2016-08-15 | 2016-12-07 | 张琬彬 | A kind of unmanned aerial vehicle body anti-collision structure |
| CN107300454A (en) * | 2016-10-21 | 2017-10-27 | 中国科学院、水利部成都山地灾害与环境研究所 | Chip stream safeguard structure impact test device |
| CN107505215A (en) * | 2017-08-07 | 2017-12-22 | 武汉大学 | A kind of impact test apparatus |
| CN109655358A (en) * | 2019-01-08 | 2019-04-19 | 武汉大学 | It is a kind of for rock or the impact test apparatus and test method of concrete sample |
| CN110261245A (en) * | 2019-07-08 | 2019-09-20 | 西安天金检测技术有限公司 | A kind of portable pneumatic type low-velocity impact testing machine and impact test method |
| CN110375946A (en) * | 2019-08-19 | 2019-10-25 | 常熟安通林汽车饰件有限公司 | It is a kind of for testing the impact device of air bag shell |
| CN110439880A (en) * | 2019-08-12 | 2019-11-12 | 北京坤飞航天科技有限公司 | The synchronous gas-liquid driving system of ultrahigh speed superelevation and gas-liquid driving method |
| CN111722652A (en) * | 2020-07-10 | 2020-09-29 | 西安倍力科智能科技有限公司 | Gas-electric hybrid control method for six-degree-of-freedom simulator |
| CN112051021A (en) * | 2020-09-15 | 2020-12-08 | 哈尔滨三迪工控工程有限公司 | Pneumatic servo linear impact emitter |
-
2008
- 2008-12-31 CN CN2008201840035U patent/CN201497683U/en not_active Expired - Fee Related
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103308267A (en) * | 2012-03-16 | 2013-09-18 | 鸿富锦精密工业（深圳）有限公司 | Impact testing device |
| CN103712765A (en) * | 2013-12-30 | 2014-04-09 | 北京航空航天大学 | Impact testing machine |
| CN103712765B (en) * | 2013-12-30 | 2015-12-30 | 北京航空航天大学 | Impact testing machine |
| CN106184782B (en) * | 2016-08-15 | 2018-12-28 | 深圳市盛禾农业科技有限公司 | A kind of unmanned aerial vehicle body anti-collision structure |
| CN106184782A (en) * | 2016-08-15 | 2016-12-07 | 张琬彬 | A kind of unmanned aerial vehicle body anti-collision structure |
| CN107300454A (en) * | 2016-10-21 | 2017-10-27 | 中国科学院、水利部成都山地灾害与环境研究所 | Chip stream safeguard structure impact test device |
| CN107300454B (en) * | 2016-10-21 | 2023-04-14 | 中国科学院、水利部成都山地灾害与环境研究所 | Clastic flow protective structure impact test device |
| CN107505215A (en) * | 2017-08-07 | 2017-12-22 | 武汉大学 | A kind of impact test apparatus |
| CN109655358A (en) * | 2019-01-08 | 2019-04-19 | 武汉大学 | It is a kind of for rock or the impact test apparatus and test method of concrete sample |
| CN110261245A (en) * | 2019-07-08 | 2019-09-20 | 西安天金检测技术有限公司 | A kind of portable pneumatic type low-velocity impact testing machine and impact test method |
| CN110439880A (en) * | 2019-08-12 | 2019-11-12 | 北京坤飞航天科技有限公司 | The synchronous gas-liquid driving system of ultrahigh speed superelevation and gas-liquid driving method |
| CN110375946A (en) * | 2019-08-19 | 2019-10-25 | 常熟安通林汽车饰件有限公司 | It is a kind of for testing the impact device of air bag shell |
| CN110375946B (en) * | 2019-08-19 | 2024-05-31 | 常熟安通林汽车饰件有限公司 | Impact device for testing airbag housing |
| CN111722652A (en) * | 2020-07-10 | 2020-09-29 | 西安倍力科智能科技有限公司 | Gas-electric hybrid control method for six-degree-of-freedom simulator |
| CN112051021A (en) * | 2020-09-15 | 2020-12-08 | 哈尔滨三迪工控工程有限公司 | Pneumatic servo linear impact emitter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100602 Termination date: 20101231 |