CN2542501Y - Energy-absorbing device for analog collision of automobile - Google Patents
Energy-absorbing device for analog collision of automobile Download PDFInfo
- Publication number
- CN2542501Y CN2542501Y CN 02209458 CN02209458U CN2542501Y CN 2542501 Y CN2542501 Y CN 2542501Y CN 02209458 CN02209458 CN 02209458 CN 02209458 U CN02209458 U CN 02209458U CN 2542501 Y CN2542501 Y CN 2542501Y
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- CN
- China
- Prior art keywords
- oil reservoir
- adjustable bolt
- cutoff port
- retainer
- absorbing device
- Prior art date
- 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
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Abstract
The utility model which discloses an energy absorber for simulated automobile crash comprises an internal oil reservoir, an external oil reservoir, orifices, a retainer, a piston and a piston rod and is characterized in that the inside of the external oil reservoir is provided with a rectangular retainer which is connected with an external wall of the internal oil reservoir and an internal wall of the external oil reservoir; the external side of each orifice on the internal oil reservoir is provided with an adjustable bolt which is fixed on the retainer; the end part of the adjustable bolt is a cylinder with the diameter larger than the orifice or a cone which can extend into the orifice; the orifices are arranged on the internal oil reservoir in a line or in a V-shape. A speed-down waveform with different vehicle weights and vehicle crash speed can be got only by adjusting the gap between the adjustable bolt and the orifices.
Description
Technical field
The utility model relates to the vehicle safety detecting device, especially the simulative automobile collision energy-absorbing device.
Background technology
In order to test various automotive safety parts, the performance of automobile safety seat belt, seat, Steering gear, safety air bag etc. for example, the widespread use simulated collision test device, simulated collision test is usually in real vehicle collision test, the deceleration/decel waveform that records on vehicle body is a foundation, by the collision of chassis and energy absorption device, reach the effect approximate with full scale vehicle collision.Energy absorption device is the controller that produces satisfactory waveform, is the critical component in the simulated collision test equipment.Energy absorption device commonly used at present is a water bumper, and its structure is a damping oil cylinder, opens several cutoff ports according to the quality and the collision speed of test chassis on casing wall, is provided with oil sump above the cylinder.When piston rod was subjected to impacting, piston nose promoted fluid and enters oil sump, thereby produced shock damping action, made deceleration/decel have specific waveforms.But, the shortcoming of this water bumper is that the area of cutoff port is certain, it can only produce specific waveform to the automobile of a certain extra fine quality under specific collision velocity, when car mass, collision velocity and expected waveform thrin changed, this water bumper was just powerless.
Summary of the invention
In order to overcome the shortcoming that existing energy absorption device damping can not be regulated, the utility model provides a kind of simulative automobile collision energy-absorbing device, the cascading water area of cutoff port can be regulated easily, to satisfy the needs of under different car weights, different collision speed, realizing the collision deceleration/decel waveform of expectation.
The technical scheme that its technical matters that solves the utility model adopts is: a kind of simulative automobile collision energy-absorbing device, comprise interior oil pocket, outer oil cavity, cutoff port, piston, piston rod, it is characterized in that having the retainer of a rectangle in the inboard of outer oil cavity, retainer links to each other with the outer wall of interior oil pocket and the inwall of outer oil cavity, there is an adjustable bolt in each the cutoff port outside that is positioned on the oil pocket, and adjustable bolt is fixed on the retainer.
Described cutoff port array is arranged on the interior oil pocket.
Described cutoff port also can adopt " V " font to be arranged on the interior oil pocket.
Described adjustable bolt end is a diameter than big cylindrical of cutoff port.
Described adjustable bolt end also can be the taper shape that can reach in the cutoff port.
The beneficial effects of the utility model are, overcome the shortcoming that the water bumper damping is unadjustable, use is limited of prior art, only need to regulate the gap between adjustable bolt and the cutoff port, can obtain different car weights, the desired deceleration waveform of different collision speed.
Description of drawings
Fig. 1 is the structural representation of transversal surface of the present utility model.
Fig. 2 is the structural representation of profile of the present utility model.
Among the figure, 1: interior oil pocket; 2: outer oil cavity; 3: cutoff port; 4: retainer; 5: adjustable bolt; 6: piston rod; 7: piston.
The specific embodiment
As shown in Figure 1, inside and outside two oil pockets are arranged in the device of the present utility model, interior oil pocket 1 is a high-voltage oil cavity, and outer oil cavity 2 is the low pressure oil pocket of oil gas coexistence.The cribbing discharge orifice 3 of arranging in upright arrangement on high-voltage oil cavity, or if need to increase cutoff port quantity, can adopt vee formation, in each cutoff port outside a cylindrical adjustable bolt 5 is installed, its slightly larger in diameter is in cutoff port 3 diameters, or the end is the conical adjustable bolt 5 that can reach in the cutoff port 3, stifled tight to guarantee not need the cutoff port of cascading water, its amount of restriction is teased and ridicule whole bolt 5 and is adjusted by being installed in one on the retainer 4, according to aimed acceleration time history and chassis quality, calculation of parameter such as the speed of a motor vehicle go out the adjustment amount of each adjustable bolt, mix up the orifice size of each cutoff port.
Automobile hits piston rod 6 and is synchronized with the movement with it, the fluid in piston 7 extruding in the oil pocket 1, and the slit that fluid is passed through between piston fwd cutoff port 3 and the adjustable bolt 5 flows into low pressure oil chamber 2, and part fluid turns back to the rear end of piston by fuel return hole.Because the area in the slit between cutoff port and the adjustable bolt is much smaller than piston area, therefore in the piston motion process, the place, slit between cutoff port and adjustable bolt forms high velocity liquid stream, and oil pocket 1 produces high pressure in making, this hydraulic action stops piston rod and trolley movement on piston; Simultaneously at each cutoff port place, the flow regime steep variation of fluid and form rapidly avried flow, fluid micellar bumps, produces whirlpool, and mechanical energy is converted into energy in the liquid.Therefore, by the gross area of throttle chink before the change piston, the flowed friction of oil pocket 1 in controlling, thus the waveform that the control chassis is hoped on schedule slows down.
Claims (5)
1, a kind of simulative automobile collision energy-absorbing device, comprise interior oil pocket (1), outer oil cavity (2), cutoff port (3), piston (7), piston rod (6), it is characterized in that having the retainer (4) of a rectangle in the inboard of outer oil cavity (2), retainer (4) links to each other with the outer wall of interior oil pocket (1) and the inwall of outer oil cavity (2), there is an adjustable bolt (5) in each cutoff port (3) outside that is positioned on the oil pocket (1), and adjustable bolt (5) is fixed on the retainer (4).
2, simulative automobile collision energy-absorbing device according to claim 1 is characterized in that: cutoff port (3) array is arranged on the interior oil pocket (1).
3, simulative automobile collision energy-absorbing device according to claim 1 is characterized in that: cutoff port (3) adopts " V " font to be arranged on the interior oil pocket (1).
4, simulative automobile collision energy-absorbing device according to claim 1 is characterized in that: described adjustable bolt (5) end is a diameter than big cylindrical of cutoff port.
5, simulative automobile collision energy-absorbing device according to claim 1 is characterized in that: described adjustable bolt (5) end is the taper shape that can reach in the cutoff port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02209458 CN2542501Y (en) | 2002-04-05 | 2002-04-05 | Energy-absorbing device for analog collision of automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02209458 CN2542501Y (en) | 2002-04-05 | 2002-04-05 | Energy-absorbing device for analog collision of automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2542501Y true CN2542501Y (en) | 2003-04-02 |
Family
ID=33689871
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02209458 Expired - Fee Related CN2542501Y (en) | 2002-04-05 | 2002-04-05 | Energy-absorbing device for analog collision of automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2542501Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105805216A (en) * | 2016-05-31 | 2016-07-27 | 江苏科技大学 | High-speed hydraulic buffering device for automobile crash test |
-
2002
- 2002-04-05 CN CN 02209458 patent/CN2542501Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105805216A (en) * | 2016-05-31 | 2016-07-27 | 江苏科技大学 | High-speed hydraulic buffering device for automobile crash test |
| CN105805216B (en) * | 2016-05-31 | 2017-09-08 | 江苏科技大学 | A kind of vehicle impact testing high-speed hydraulic buffer unit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |