CN105805216B - A kind of vehicle impact testing high-speed hydraulic buffer unit - Google Patents
A kind of vehicle impact testing high-speed hydraulic buffer unit Download PDFInfo
- Publication number
- CN105805216B CN105805216B CN201610372977.5A CN201610372977A CN105805216B CN 105805216 B CN105805216 B CN 105805216B CN 201610372977 A CN201610372977 A CN 201610372977A CN 105805216 B CN105805216 B CN 105805216B
- Authority
- CN
- China
- Prior art keywords
- buffer unit
- screw
- inner sleeve
- bulb
- plunger
- 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.)
- Active
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/10—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using liquid only; using a fluid of which the nature is immaterial
- F16F9/14—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect
- F16F9/16—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts
- F16F9/22—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts with one or more cylinders each having a single working space closed by a piston or plunger
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/34—Special valve constructions; Shape or construction of throttling passages
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
- G01M17/0078—Shock-testing of vehicles
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Vibration Dampers (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a kind of vehicle impact testing high-speed hydraulic buffer unit, the buffer unit on rail is fixed on including several, the buffer unit includes inner sleeve and overcoat, the inner sleeve and overcoat are fixed by drive end bearing bracket and rear end cap, screw-plunger is installed in the inner sleeve, the head of the screw-plunger is provided with rotatable impact head, back-moving spring is cased with the screw-plunger outside inner sleeve, oil pocket is formed between inner sleeve and overcoat, put and connected provided with through hole with oil pocket in described, inside put and check valve is installed.The vehicle impact testing high-speed hydraulic buffer unit of the present invention, absorb energy only to stop trailer wagon by the screw thread shear action of screw-plunger and the damping action of buffer inner chamber hydraulic oil simultaneously, absorb energy ability stronger, it is ensured that what the trailer wagon with larger inertia can be stablized stops.
Description
Technical field
The present invention relates to vehicle impact testing high-speed hydraulic buffer unit, belong to automobile test field.
Background technology
Vehicle impact testing is the necessary means of progress test automotive SBC in new automobile R＆D process, with
Society considers vehicle safety performance increasingly to improve, and automotive crash safety lab construction is increased rapidly in China.Current automobile
Impact test trailer system uses motor to draw substantially, using V belt translation principle, rotates driving steel wire rope by motor, passes through traction
The motion of steel wire rope is passed to test vehicle by dolly, and realization cuts off steel in instruction carriage when apart from knocked object certain distance
Power transmission between cord and instruction carriage, it is ensured that instruction carriage is in a free state with defined speed impacts knocked object.By
Departing from trailer wagon still has higher speed after haulage cable, traditional method for only stopping trailer wagon is to utilize traction
Dolly hits white steel pipe or barrier, makes white steel pipe or obstacle composition deformation energy-absorbing to reach and only stops the purpose of dolly, so does
Need constantly to change the white steel pipe or barrier deformed, while having trailer wagon and rail different degrees of damage.Invention is special
Sharp " a kind of automobile collision energy-absorbing buffer device " (patent No. 2011101059021.8) discloses a kind of hydraulic damping device, should
Device moves the fluid in extruding working chamber by hydraulic cylinder piston, and the object of effect in the above is carried out by hydraulic damping
Stopping is buffered to, certain protective effect is played to impacting object.But the moment impact of automobile collision procedure trailer wagon
Very big, simple acted on by hydraulic damping is difficult to convert impact energy absorption in moment, can cause certain in itself to hydraulic cylinder
Damage, vehicle impact testing of the invention high-speed hydraulic buffer unit, while by the screw thread shear action of screw-plunger
Absorb energy only to stop trailer wagon with the damping action of buffer inner chamber hydraulic oil, absorb energy ability stronger, it is ensured that
What the trailer wagon with larger inertia can be stablized stops.
The content of the invention
Goal of the invention：In order to overcome the deficiencies in the prior art, it is high that the present invention provides a kind of vehicle impact testing
Fast hydraulic damping device, practicality and high efficiency is safe and reliable, highly versatile, also smaller to trailer wagon and rail damage.
Technical scheme：To achieve the above object, vehicle impact testing of the invention high-speed hydraulic buffer unit, if including
The dry individual buffer unit being fixed on rail, the buffer unit includes inner sleeve and overcoat, and the inner sleeve and overcoat pass through
Drive end bearing bracket and rear end cap are fixed, and screw-plunger is provided with the inner sleeve, and the head of the screw-plunger is provided with rotatable hit
Tap the head, back-moving spring is cased with the screw-plunger outside inner sleeve, oil pocket is formed between inner sleeve and overcoat, interior put is provided with
Outage is connected with oil pocket, is inside put and is provided with check valve.
Preferably, the rotatable impact head include be connected with screw-plunger cylindrical bulb, bulb drive end bearing bracket and
Bulb rear end cap, the cylindrical bulb is contacted with bulb drive end bearing bracket point, and cylinder needle bearing is cased with cylindrical bulb, circle
Post needle bearing is fixed on cylindrical bulb by bulb drive end bearing bracket, and bulb drive end bearing bracket is fixedly connected with bulb rear end cap.
Preferably, the screw-plunger is connected through a screw thread with drive end bearing bracket.
Preferably, the lead angle of the screw-plunger is more than the equivalent friction angle of screw thread, it is to avoid screw-plunger is being led
Draw screw thread self-locking when dolly hits, lose the effect of hydraulic cushion.
Preferably, the rear end cap, which is located on the face of inner sleeve, is provided with buffer stopper.
Be welded in preferably, being fixed with pasting board under bottom plate, bottom plate on the rail below bottom plate, pressing plate by bolt with
Pasting board is connected under bottom plate, and blocking arm is welded with front of bottom plate.Gap under bottom plate between the length of pasting board and parallel steel rails is equal, pressure
Plate is connected by bolt with pasting board under bottom plate, and the gap between rail can be quickly adjusted according to the length of pasting board under bottom plate, and pressing plate leads to
Cross bolt rail wing side is fixed between bottom plate and pressing plate
Beneficial effect：The present invention vehicle impact testing high-speed hydraulic buffer unit, when by towing motorcar apart from quilt
When hitting object certain distance, the traction shock hydraulic damping device that trailer wagon departs from driving steel wire rope stops, by towing motorcar
Depart from trailer wagon in a free state with defined speed impacts knocked object, make while being sheared by the screw thread of screw-plunger
Energy is absorbed with the damping action with buffer inner chamber hydraulic oil only to stop trailer wagon, absorption energy ability is stronger, Ke Yibao
What trailer wagon of the card with larger inertia can be stablized stops.
Brief description of the drawings
Fig. 1 is the composition mechanism schematic diagram of the present invention.
Fig. 2 is that buffer unit cuts open and shows schematic diagram.
Fig. 3 is hydraulic damping device top view.
Fig. 4 is the zoomed-in view of B in Fig. 2.
Fig. 5 is the zoomed-in view of C in Fig. 2.
Fig. 6 is hydraulic damping device and rail clamping schematic diagram.
Embodiment
The present invention is further described below in conjunction with the accompanying drawings.
Composition mechanism such as Fig. 1 of the applicable Crash Safety Design of Vehicles testing experiment trailer system of the present invention, is driven by motor
Dynamic steel wire rope drives trailer wagon to be run with certain speed along rail 19, and the motion of trailer wagon is dragged by towing motorcar with same
The speed motion of sample, when when apart from knocked object certain distance, trailer wagon departs from leading for driving steel wire rope by towing motorcar
Draw shock hydraulic damping device to stop, depart from trailer wagon by towing motorcar is hit with defined speed impacts in a free state
Object.
As shown in Figures 1 to 6, overcoat 2 is secured by bolts between drive end bearing bracket 3, rear end cap 4, and rear end cap is located at inner sleeve
Face on buffer stopper 9 is installed, inner sleeve 1 is by recess-mounted between drive end bearing bracket 3, rear end cap 4, and the tail end of inner sleeve 1 leaves oil extraction
Hole 10 and check valve 11, leave oil storage gap between inner sleeve 1 and overcoat 2, the pilot hole of screw-plunger 5 and drive end bearing bracket 3 passes through spiral shell
Line is attached, and the front end of screw-plunger 5 is provided with rotatable impact head 13, and back-moving spring 14 is connected to drive end bearing bracket 3 and impact head
Between 13, pasting board 6 is welded in the lower section of bottom plate 8 under bottom plate, and pressing plate 7 is connected by bolt with pasting board under bottom plate 6, is welded in front of bottom plate
There is blocking arm 12.
When the trailer wagon handle hits the blocking arm 12 of hydraulic damping device, trailer wagon departs from rope traction and hit
The impact head 13 of hydraulic damping device, while also being departed from trailer wagon by towing motorcar with certain speed free-running operation.
The screw-plunger 5 is attached with the pilot hole of drive end bearing bracket 3 by screw thread, and the lead angle of screw-plunger 5 is more than
The equivalent friction angle of screw thread, it is to avoid the screw thread self-locking when trailer wagon hits of screw-plunger 5, loses the effect of hydraulic cushion.
The buffer inner sleeve tail end leaves two circle outages 10 and a circle check valve 11, and check valve 11 enters in exocoel oil
Opened during inner chamber, outage 10 is played is discharged to exocoel by the hydraulic oil of inner chamber, and the effect of check valve is that screw-plunger 5 is interior when resetting
The quick oil return of chamber.The hydraulic damping device resets after the completion of trailer wagon shock by back-moving spring 14 returns screw-plunger
Journey, now check valve 11, which is opened, makes the hydraulic oil of buffer exocoel rapidly enter buffer inner chamber.
The interior cylindrical bulb 18 of rotatable impact head 13 and bulb drive end bearing bracket 15 are by being contacted, cylinder
Connected between bulb 18 and bulb drive end bearing bracket 15 by cylinder needle bearing 17, when trailer wagon and the frontal collision of impact head 13 patch
During conjunction, screw-plunger 5 is freely rotatable by cylinder needle bearing 17, while cylindrical bulb 18 passes through with bulb drive end bearing bracket 15
Point contact reduces rotary course resistance.
Between pasting board 6 is welded under the lower section of bottom plate 8, bottom plate between the length and parallel steel rails 19 of pasting board 6 under the bottom plate
Gap is equal, and pressing plate 7 is connected by bolt with pasting board under bottom plate 6, can quickly be adjusted between rail 19 according to the length of pasting board under bottom plate 6
Gap, the wing side of rail 19 is fixed between bottom plate 8 and pressing plate 7 by pressing plate 7 by bolt.
In the use of the present invention, trailer wagon hits bulb drive end bearing bracket 15, due to bulb drive end bearing bracket 15 and cylindrical bulb
18 be point contact, and screw-plunger 5 is with drive end bearing bracket 3 to be threadedly coupled, and screw-plunger 5 is resetted simultaneously by rotary squeezing hydraulic oil
Spring-compressed energy-absorbing, when trailer wagon impulsive force is excessive, the impulsive force of trailer wagon causes screw-plunger to shear screw thread, absorbs
Energy, further passes through hydraulic oil energy-absorbing.Screw thread of the present invention when trailer wagon hits simultaneously by screw-plunger 5 is sheared
The damping action of effect and buffer inner chamber hydraulic oil absorbs energy only to stop trailer wagon, and it is stronger to absorb energy ability, can be with
Ensure that the trailer wagon with larger inertia can be stopped stably, present apparatus practicality and high efficiency, safe and reliable, versatility
By force, it is also smaller to trailer wagon and rail damage.
Described above is only the preferred embodiment of the present invention, it should be pointed out that：For the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (6)
1. a kind of vehicle impact testing high-speed hydraulic buffer unit, it is characterised in that：It is fixed on including several on rail
Buffer unit, the buffer unit includes inner sleeve and overcoat, and the inner sleeve and overcoat are fixed by drive end bearing bracket and rear end cap,
Screw-plunger is installed, the head of the screw-plunger is provided with rotatable impact head, the spiral shell outside inner sleeve in the inner sleeve
Back-moving spring is cased with bar piston, oil pocket is formed between inner sleeve and overcoat, interior put connects provided with outage with oil pocket, interior
Put and check valve is installed.
2. vehicle impact testing according to claim 1 high-speed hydraulic buffer unit, it is characterised in that：It is described rotatable
Impact head includes the cylindrical bulb, bulb drive end bearing bracket and the bulb rear end cap that be connecteds with screw-plunger, the cylindrical bulb and
Bulb drive end bearing bracket point is contacted, and cylinder needle bearing is cased with cylindrical bulb, and cylinder needle bearing is solid by bulb drive end bearing bracket
It is scheduled on cylindrical bulb, bulb drive end bearing bracket is fixedly connected with bulb rear end cap.
3. vehicle impact testing according to claim 1 high-speed hydraulic buffer unit, it is characterised in that：The screw rod is lived
Plug is connected through a screw thread with drive end bearing bracket.
4. vehicle impact testing according to claim 3 high-speed hydraulic buffer unit, it is characterised in that：The screw rod is lived
The lead angle of plug is more than the equivalent friction angle of screw thread.
5. vehicle impact testing according to claim 1 high-speed hydraulic buffer unit, it is characterised in that：The rear end cap
Buffer stopper is installed on the face of inner sleeve.
6. vehicle impact testing according to claim 1 high-speed hydraulic buffer unit, it is characterised in that：On the rail
It is fixed with pasting board under bottom plate, bottom plate to be welded in below bottom plate, pressing plate is connected by bolt with pasting board under bottom plate, is welded in front of bottom plate
There is blocking arm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610372977.5A CN105805216B (en) | 2016-05-31 | 2016-05-31 | A kind of vehicle impact testing high-speed hydraulic buffer unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610372977.5A CN105805216B (en) | 2016-05-31 | 2016-05-31 | A kind of vehicle impact testing high-speed hydraulic buffer unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105805216A CN105805216A (en) | 2016-07-27 |
| CN105805216B true CN105805216B (en) | 2017-09-08 |
Family
ID=56427775
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610372977.5A Active CN105805216B (en) | 2016-05-31 | 2016-05-31 | A kind of vehicle impact testing high-speed hydraulic buffer unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105805216B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106198067B (en) * | 2016-09-28 | 2019-01-22 | 中车株洲电力机车有限公司 | A kind of track train impact test system |
| CN111946769B (en) * | 2020-08-21 | 2021-11-09 | 安徽斯瓦克汽车配件有限公司 | Hydraulic buffer for automobile |
| CN115560996B (en) * | 2022-12-07 | 2023-04-14 | 易清汽车安全系统(苏州)有限公司 | Impact force display device for automobile anti-collision test |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2542501Y (en) * | 2002-04-05 | 2003-04-02 | 中国汽车技术研究中心 | Energy-absorbing device for analog collision of automobile |
| CN2677901Y (en) * | 2003-11-06 | 2005-02-09 | 清华大学 | Adjustable hydraulic buffer for vehicle analogue collision |
| CN102145674A (en) * | 2011-04-26 | 2011-08-10 | 东北大学 | Automobile collision energy-absorbing buffer device |
| CN202693249U (en) * | 2012-06-13 | 2013-01-23 | 浙江吉利汽车研究院有限公司杭州分公司 | Sliding table collision test device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011085791B4 (en) * | 2011-11-04 | 2015-04-02 | Illinois Tool Works Inc. | Testing device for crash simulation tests |
-
2016
- 2016-05-31 CN CN201610372977.5A patent/CN105805216B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2542501Y (en) * | 2002-04-05 | 2003-04-02 | 中国汽车技术研究中心 | Energy-absorbing device for analog collision of automobile |
| CN2677901Y (en) * | 2003-11-06 | 2005-02-09 | 清华大学 | Adjustable hydraulic buffer for vehicle analogue collision |
| CN102145674A (en) * | 2011-04-26 | 2011-08-10 | 东北大学 | Automobile collision energy-absorbing buffer device |
| CN202693249U (en) * | 2012-06-13 | 2013-01-23 | 浙江吉利汽车研究院有限公司杭州分公司 | Sliding table collision test device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105805216A (en) | 2016-07-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105805216B (en) | A kind of vehicle impact testing high-speed hydraulic buffer unit | |
| CN105292164B (en) | Telescopic rail energy-absorbing device for vehicle collision | |
| CN204899536U (en) | Engine bonnet hinge structure and pedestrian protection device | |
| CN103600711A (en) | Active-extension energy-absorption bumper of minibus | |
| CN106320223B (en) | A kind of escape automotive controls | |
| CN203358508U (en) | Protective device used on vehicle | |
| CN110435708B (en) | Self-locking buffer brake device for preventing rope breaking and sliding of inclined shaft | |
| CN206704143U (en) | A kind of active control device for being used to improve commercial vehicle collision security | |
| CN209584904U (en) | A kind of full-automatic alley stopping device | |
| CN109532924A (en) | A kind of bullet train passive protection level 2 buffering tripper | |
| CN108860027A (en) | A kind of automotive rear part counterattack safety protection device | |
| CN207274713U (en) | A kind of rail travelling crane stopper with locking device | |
| CN105953025B (en) | A kind of wiper receives anticollision device, collision-prevention device | |
| CN206438444U (en) | A kind of escape automotive controls | |
| CN207435975U (en) | A kind of buffer of highway engineering repair | |
| WO2018072611A1 (en) | Coupling assembly and rail vehicle having same | |
| CN207029576U (en) | A kind of unmanned aerial vehicle ejecting frame dolly tripping mechanism | |
| CN105822349B (en) | Horizontal slope track automatic safety door | |
| CN204368068U (en) | The bumper for car of automatic telescopic before and after energy | |
| CN204998467U (en) | Anti -collision device of automobile | |
| CN208515608U (en) | Mining bidirectional car arrester | |
| CN207790822U (en) | A kind of steering gear for being collided before car | |
| CN108827664B (en) | Impact test detection table for automobile steering system | |
| CN203637752U (en) | Vehicle device used for preventing tailgating vehicle from running into portion below vehicle | |
| CN208469828U (en) | A kind of electric locomotive car slipping protective device of shield-tunneling construction |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20191209 Address after: 212000 Ronglu East, mujiadian village, Dantu District, Zhenjiang City, Jiangsu Province Patentee after: Zhenjiang three Xin Metal Industry Co., Ltd. Address before: 212003, No. 2, Mengxi Road, Zhenjiang, Jiangsu Patentee before: Jiangsu University of Science and Technology |
|
| TR01 | Transfer of patent right |