CN104097599A - Multistage-buffering and height-adjustable truck tail collision avoiding device - Google Patents
Multistage-buffering and height-adjustable truck tail collision avoiding device Download PDFInfo
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- CN104097599A CN104097599A CN201410352855.0A CN201410352855A CN104097599A CN 104097599 A CN104097599 A CN 104097599A CN 201410352855 A CN201410352855 A CN 201410352855A CN 104097599 A CN104097599 A CN 104097599A
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Abstract
The invention belongs to the technical field of truck tail bumper collision avoiding devices and discloses a multistage-buffering and height-adjustable truck tail collision avoiding device which comprises a rigid swing frame, a bumper and a plurality of energy-absorbing buffering and height-adjusting hydraulic cylinders, one end of the rigid swing frame is hinged on crossbeams of a truck while the other end of the same is fixedly connected with the bumper, one ends of the energy-absorbing buffering and height-adjusting hydraulic cylinders are hinged on the bumper while the other ends of the same are hinged at the bottom of a compartment of the truck, and oil incoming holes in the energy-absorbing buffering and height-adjusting hydraulic cylinders are connected with a vehicle-mounted hydraulic system of the truck; each energy-absorbing buffering and height-adjusting hydraulic cylinder comprises a cylinder body and a piston rod positioned in the cylinder body, a sealed side of each cylinder body is hinged to the bottom of the compartment of the truck while an open side of the same is in sealed sliding fit with the corresponding piston rod, the end portion of a rod body of an extending section of each piston rod is hinged to the bumper, an energy-absorbing thread is formed on the rod body of each piston rod positioned in the corresponding cylinder body and is in shear fit with the open side of the corresponding cylinder body, and an opening of each cylinder body is a shear opening; a buffering spring is mounted on the piston rod in each cylinder body in a sleeved manner, and a high-elasticity rubber pad is additionally mounted on an impact face of the bumper.
Description
Technical field
The invention belongs to load carrying vehicle tailstock bumper anti-collision device technique field, particularly relate to a kind of multi-buffer and adjustable for height anticollision device for rear of truck.
Background technology
In recent years, load carrying vehicle accident rate constantly increases, according to Public Security Department of Ministry of Public Security statistics in 2012, the whole nation relates to 210812 of the road accidents of personal casualty, load carrying vehicle accident accounts for 72% more than of whole production and operation incidents, and car rear-end lorry accident accounts for significant proportion and often suffers heavy losses, the personnel's survival rate knocking into the back on car is very low, because when there is rear-end collision, the compartment lower edge height of lorry substantially all drops on the smaller A post of car impact strength, and the bumper/spoiler of car bears impact hardly, can directly penetrate truck chassis, now the compartment of lorry can block A post easily, thereby car is divided into upper and lower two parts, now the safety devices such as safety air bag of car cannot provide any safety control at all, the Guillotine Effect phenomenon that Here it is often says, the phenomenon of choping off the head.
At present, the a lot of countries and regions that comprise the U.S., Europe and China all require lorry must install in the tailstock bottom bumper anti-collision device additional, get into when preventing car rear-end lorry below, although present stage, the lorry of China generally installed bumper anti-collision device in tailstock bottom, but these bumper anti-collision devices, adopt frivolous angle bar to be simply welded, then be suspended on girder of truck to resist the shock of the car that knocks into the back, but these bumper anti-collision devices are undercapacity often, be difficult to effectively stop the car of speed to pierce.
Now China's regulation truck tail bumper anti-collision device overhead distance must not be greater than 45 centimetres, this is with regard to causing the departure angle of lorry to reduce, and when condition of road surface is bad, is easy to cause the bumper anti-collision device road surface of colliding with, and the crossing ability of lorry is lowered.
Deficiency for traditional truck tail bumper anti-collision device, occurred that some adopt the truck tail bumper anti-collision device of four-bar linkage design, although this design has had adjustable for height ability, and increased the crossing ability of lorry, but the introducing of four-bar linkage makes bumper anti-collision apparatus structure become complicated, make to resist the ability of clashing into simultaneously and weaken; Also have some truck tail bumper anti-collision devices simply to adopt spring to carry out buffering energy-absorbing, design has caused a fatal defect like this, single spring arranges the integral rigidity that the very big degree of meeting reduces anticollision device, and then make the ability variation of instantaneous energy-absorbing, thereby the specific (special) requirements of out of reach auto against need to absorb approximately 1.0 * 10 after auto against in 0.12 second
5the energy of joule.
Summary of the invention
The problem existing for prior art, the invention provides a kind of multi-buffer and adjustable for height anticollision device for rear of truck, when running into condition of road surface when bad, can easily adjust the height of anticollision device, makes lorry have good crossing ability; When meeting with rear-end collision, at utmost impact-absorbing energy, effectively prevents that car from piercing lorry bottom, reduces the car damage rate that knocks into the back, and at utmost saves sedan-chair occupant's life from damage.
To achieve these goals, the present invention adopts following technical scheme: a kind of multi-buffer and adjustable for height anticollision device for rear of truck, comprise that rigidity swing span, energy-absorbing buffering heighten hydraulic actuating cylinder and bumper/spoiler, described rigidity swing span one end is hinged on girder of truck by bearing pin, the rigidity swing span other end and bumper/spoiler Joint; It is some that described energy-absorbing buffering is heightened hydraulic actuating cylinder quantity, and energy-absorbing buffering is heightened hydraulic actuating cylinder one end and is hinged on bumper/spoiler, and energy-absorbing buffering is heightened the hydraulic actuating cylinder other end and is hinged on bottom, boxcar; Described energy-absorbing buffering is heightened hydraulic actuating cylinder and is connected with lorry vehicle-mounted hydraulic system by fuel feed hole on it.
Described energy-absorbing buffering is heightened hydraulic actuating cylinder and is comprised cylinder body and piston rod, piston rod is positioned at cylinder body, cylinder body seal side and bottom, boxcar are hinged, cylinder body open side and piston rod packing bearing fit, rod end and bumper/spoiler that piston rod is overhanging section are hinged, be positioned on the piston rod body of rod of cylinder body and be provided with energy-absorbing screw thread, energy-absorbing screw thread is sheared and is coordinated with cylinder body open side, and its opening is sheared edge.
Upper cover of piston rod in described cylinder body is equipped with recoil spring.
On the striking face of described bumper/spoiler, add high-elastic rubber pad.
Beneficial effect of the present invention:
Compared with prior art, when meeting with car rear-end accident, at utmost impact-absorbing energy, effectively prevents that car from piercing lorry bottom, reduces the car damage rate that knocks into the back, and at utmost saves sedan-chair occupant's life from damage in the present invention; In the normal driving process of lorry, when running into condition of road surface when bad, driver can easily adjust the height of anticollision device for rear of truck, makes lorry have good crossing ability.
Accompanying drawing explanation
Fig. 1 is a kind of multi-buffer of the present invention and adjustable for height anticollision device for rear of truck structural representation;
Fig. 2 is that energy-absorbing buffering of the present invention is heightened hydraulic cylinder structure schematic diagram;
In figure, 1-girder of truck, 2-bearing pin, 3-rigidity swing span, 4-energy-absorbing buffering is heightened hydraulic actuating cylinder, 5-bumper/spoiler, 6-high-elastic rubber pad, 7-fuel feed hole, 8-cylinder body, 9-piston rod, 10-energy-absorbing screw thread, 11-recoil spring, 12-sheared edge.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
As shown in Figure 1, 2, a kind of multi-buffer and adjustable for height anticollision device for rear of truck, comprise that rigidity swing span 3, energy-absorbing buffering heighten hydraulic actuating cylinder 4 and bumper/spoiler 5, described rigidity swing span 3 one end are hinged on girder of truck 1 by bearing pin 2, rigidity swing span 3 other ends and bumper/spoiler 5 Joints (weld together); Described energy-absorbing buffering is heightened hydraulic actuating cylinder 4 quantity some (in the present embodiment, quantity is four), and energy-absorbing buffering is heightened hydraulic actuating cylinder 4 one end and is hinged on bumper/spoiler 5, and energy-absorbing buffering is heightened hydraulic actuating cylinder 4 other ends and is hinged on bottom, boxcar; Described energy-absorbing buffering is heightened hydraulic actuating cylinder 4 and is connected with lorry vehicle-mounted hydraulic system by fuel feed hole 7 on it, and driver implements pressurization or unloading by energy-absorbing buffering being heightened to hydraulic actuating cylinder 4, can realize the height adjustment of tailstock portion anticollision device.
Described energy-absorbing buffering is heightened hydraulic actuating cylinder 4 and is comprised cylinder body 8 and piston rod 9, piston rod 9 is positioned at cylinder body 8, cylinder body 8 sealed sides and bottom, boxcar are hinged, cylinder body 8 open side and piston rod 9 sealing bearing fits, the rod end that piston rod 9 is overhanging section and bumper/spoiler 5 are hinged, be arranged on piston rod 9 bodies of rod of cylinder body 8 and be provided with energy-absorbing screw thread 10 (the present embodiment is square thread), energy-absorbing screw thread 10 is sheared and is coordinated with cylinder body 8 open side, and its opening is sheared edge 12.
On piston rod 9 in described cylinder body 8, be set with recoil spring 11.
On the striking face of described bumper/spoiler 5, add high-elastic rubber pad 6.
Below in conjunction with accompanying drawing, a use procedure of the present invention is described:
When running into condition of road surface when bad, driver can heighten the oil-filled pressurization of hydraulic actuating cylinder 4 to energy-absorbing buffering by lorry vehicle-mounted hydraulic system, makes piston rod 9 up, and then drives rigidity swing span 3 and the whole upwards lifting of bumper/spoiler 5, thereby increase lorry departure angle, improve the crossing ability of lorry; When lorry drives to behind road surface with favourable conditions, driver can heighten hydraulic actuating cylinder 4 oil extractions to energy-absorbing buffering by lorry vehicle-mounted hydraulic system and unload, rigidity swing span 3 and bumper/spoiler 5 can automatically restore to initial position under deadweight, to meet the liftoff spacing of maximum of national regulation, are less than or equal to the requirement of 45 centimetres.
When lorry meets with car rear-end accident in normal driving process, first the front portion of car can strike on bumper/spoiler 5, under the buffer action of high-elastic rubber pad 6, at the first stage clashing into, realizes first-level buffer energy-absorbing, sponges sub-fraction impact energy simultaneously;
If the speed of a motor vehicle is too fast, at the first stage car clashing into, can't stop at once, can continue to move forward and collide bumper/spoiler 5, now bumper/spoiler 5 and rigidity swing span 3 can swing to oblique rear under impacting, and then pull energy-absorbing buffering to heighten the piston rod 9 of hydraulic actuating cylinder 4, but the energy-absorbing screw thread 10 on piston rod 9 is subject to sheared edge, 12 restrictions cannot continue overhanging, but under huge impulsive force, energy-absorbing screw thread 10 has been difficult to stop the overhanging of piston rod 9, now can under the shear action of sheared edge 12, be sheared, and in the process that energy-absorbing screw thread 10 is sheared, understand absorption and consume a large amount of impact energys, realize level 2 buffering energy-absorbing, in the supreme process being sheared in energy-absorbing screw thread 10 bottom rights, recoil spring 11 can be gradually reduced, and further realizes flexible three grades of buffering energy-absorbings, and so, after multi-buffer energy-absorbing, the impact energy of car has been consumed the overwhelming majority,
Once still fail car is stopped after three grades of buffering energy-absorbings, the piston rod 9 that energy-absorbing buffering is heightened hydraulic actuating cylinder 4 will thoroughly be pulled out outside cylinder body 8, and separated with cylinder body 8, the energy-absorbing buffering that now energy-absorbing buffering is heightened hydraulic actuating cylinder 4 thoroughly lost efficacy, but when energy-absorbing buffering is heightened hydraulic actuating cylinder 4 inefficacies, rigidity swing span 3 and bumper/spoiler 5 can drop on road surface in the very first time, thereby and truck chassis forms a wedged gap, stop car to pierce the possibility of lorry bottom, at utmost saved sedan-chair occupant's life from damage.
Scheme in embodiment is not in order to limit scope of patent protection of the present invention, and the equivalence that all the present invention of disengaging do is implemented or change, is all contained in the scope of the claims of this case.
Claims (4)
1. a multi-buffer and adjustable for height anticollision device for rear of truck, it is characterized in that: comprise that rigidity swing span, energy-absorbing buffering heighten hydraulic actuating cylinder and bumper/spoiler, described rigidity swing span one end is hinged on girder of truck by bearing pin, the rigidity swing span other end and bumper/spoiler Joint; It is some that described energy-absorbing buffering is heightened hydraulic actuating cylinder quantity, and energy-absorbing buffering is heightened hydraulic actuating cylinder one end and is hinged on bumper/spoiler, and energy-absorbing buffering is heightened the hydraulic actuating cylinder other end and is hinged on bottom, boxcar; Described energy-absorbing buffering is heightened hydraulic actuating cylinder and is connected with lorry vehicle-mounted hydraulic system by fuel feed hole on it.
2. a kind of multi-buffer according to claim 1 and adjustable for height anticollision device for rear of truck, it is characterized in that: described energy-absorbing buffering is heightened hydraulic actuating cylinder and comprised cylinder body and piston rod, piston rod is positioned at cylinder body, cylinder body seal side and bottom, boxcar are hinged, cylinder body open side and piston rod packing bearing fit, rod end and bumper/spoiler that piston rod is overhanging section are hinged, be positioned on the piston rod body of rod of cylinder body and be provided with energy-absorbing screw thread, energy-absorbing screw thread is sheared and is coordinated with cylinder body open side, and its opening is sheared edge.
3. a kind of multi-buffer according to claim 2 and adjustable for height anticollision device for rear of truck, is characterized in that: the upper cover of piston rod in described cylinder body is equipped with recoil spring.
4. a kind of multi-buffer according to claim 1 and adjustable for height anticollision device for rear of truck, is characterized in that: on the striking face of described bumper/spoiler, add high-elastic rubber pad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410352855.0A CN104097599B (en) | 2014-07-22 | 2014-07-22 | A kind of multi-buffer and adjustable for height anticollision device for rear of truck |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410352855.0A CN104097599B (en) | 2014-07-22 | 2014-07-22 | A kind of multi-buffer and adjustable for height anticollision device for rear of truck |
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| CN104097599A true CN104097599A (en) | 2014-10-15 |
| CN104097599B CN104097599B (en) | 2016-05-25 |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105599714A (en) * | 2016-03-23 | 2016-05-25 | 贵阳吉安电控门有限公司 | Vehicle anti-collision device |
| CN105691339A (en) * | 2016-04-01 | 2016-06-22 | 吉林大学 | Heavy automobile biomimetic rear bumper |
| CN106347274A (en) * | 2016-11-23 | 2017-01-25 | 安徽江淮汽车集团股份有限公司 | Vehicle rear protection |
| CN106347272A (en) * | 2016-11-23 | 2017-01-25 | 安徽江淮汽车集团股份有限公司 | Vehicle rear protection |
| CN106347273A (en) * | 2016-10-31 | 2017-01-25 | 吉林大学 | Collapsible rear protection device for heavy vehicle |
| CN106427852A (en) * | 2016-11-23 | 2017-02-22 | 安徽江淮汽车集团股份有限公司 | Vehicle rear protector |
| CN106671919A (en) * | 2016-12-30 | 2017-05-17 | 北奔重型汽车集团有限公司 | Pneumatic front protection device for vehicle |
| CN108275105A (en) * | 2016-12-23 | 2018-07-13 | 曼卡车和巴士股份公司 | Rear portion underrun protection for delivery vehicle |
| CN110001565A (en) * | 2019-04-25 | 2019-07-12 | 东北林业大学 | A kind of lorry absorption power anticollision beam |
| CN112693413A (en) * | 2020-04-07 | 2021-04-23 | 西华大学 | Front bumper active protection device for rear-end collision of electric car |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105599714A (en) * | 2016-03-23 | 2016-05-25 | 贵阳吉安电控门有限公司 | Vehicle anti-collision device |
| CN105691339A (en) * | 2016-04-01 | 2016-06-22 | 吉林大学 | Heavy automobile biomimetic rear bumper |
| CN105691339B (en) * | 2016-04-01 | 2018-06-26 | 吉林大学 | Heavy-duty car bionic rear bumper |
| CN106347273A (en) * | 2016-10-31 | 2017-01-25 | 吉林大学 | Collapsible rear protection device for heavy vehicle |
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| CN106427852A (en) * | 2016-11-23 | 2017-02-22 | 安徽江淮汽车集团股份有限公司 | Vehicle rear protector |
| CN106347272B (en) * | 2016-11-23 | 2018-12-14 | 安徽江淮汽车集团股份有限公司 | Vehicle rear protecting |
| CN108275105A (en) * | 2016-12-23 | 2018-07-13 | 曼卡车和巴士股份公司 | Rear portion underrun protection for delivery vehicle |
| CN108275105B (en) * | 2016-12-23 | 2023-12-22 | 曼卡车和巴士股份公司 | Rear underrun protection device for a vehicle |
| CN106671919A (en) * | 2016-12-30 | 2017-05-17 | 北奔重型汽车集团有限公司 | Pneumatic front protection device for vehicle |
| CN110001565A (en) * | 2019-04-25 | 2019-07-12 | 东北林业大学 | A kind of lorry absorption power anticollision beam |
| CN110001565B (en) * | 2019-04-25 | 2020-02-11 | 东北林业大学 | Energy-absorbing anti-collision beam for truck |
| CN112693413A (en) * | 2020-04-07 | 2021-04-23 | 西华大学 | Front bumper active protection device for rear-end collision of electric car |
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