CN109291869A - A kind of energy-absorption type rear of automatic controlled height - Google Patents
A kind of energy-absorption type rear of automatic controlled height Download PDFInfo
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- CN109291869A CN109291869A CN201811397918.9A CN201811397918A CN109291869A CN 109291869 A CN109291869 A CN 109291869A CN 201811397918 A CN201811397918 A CN 201811397918A CN 109291869 A CN109291869 A CN 109291869A
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- energy
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
- B60R19/56—Fittings damping bouncing force in truck collisions, e.g. bumpers; Arrangements on high-riding vehicles, e.g. lorries, for preventing vehicles or objects from running thereunder
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
- B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vibration Dampers (AREA)
- Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
Abstract
The present invention is a kind of energy-absorption type rear of automatic controlled height, the device includes: two terrain clearance detection agencies, two " 4 font " brackets, transmission mechanism, stud crossbeam and energy-absorbing unit, two " 4 font " brackets are symmetrically mounted on two stringer lateral surfaces of commercial vehicle tail portion, it is linked together between two " 4 font " brackets by transmission mechanism, stud crossbeam is connected by energy-absorbing unit on the end face of " 4 font " bracket facing tailstock；Two side rail inners in commercial vehicle tail portion pass through connection two terrain clearance detection agencies of pin connection respectively；Each terrain clearance detection agency includes connector, connecting rod, the plank with universal wheel, and the connector is installed on the side rail inner of commercial vehicle tail portion by connecting pin, and connector can be rotated around connecting pin.The device have obstacle crossing ability, can step by step smooth absorption collision energy, rigidity gradient is distributed in the height direction, and can effectively prevent wear end collision of automobile and pierce truck bottom.
Description
Technical field
The present invention relates to after rear protection device for commercial vehicle technical field more particularly to a kind of energy-absorption type of automatic controlled height
Protective device.
Background technique
In the mode of transportation based on China's mixed traffic mode, the accident rate of car rear-end truck is higher, and by
Extremely severe in the two compatibility, collision consequence is more serious, since small passenger car front height wants low compared to commercial vehicle, once
Rear-end impact accident occurs, small passenger car is very easy to pierce commercial vehicle bottom, and the car that knocks into the back is often car crash.It is existing
Commercial vehicle protecting device for rear lower part is mostly fixed, is directly rigidly connected with vehicle frame, and trafficability is poor；Some are using machine
Electrical integrated technology is when guaranteeing collision on the basis of front vehicle safety, and the passability that vehicle can be improved itself, ensures
Its rear is not destroyed when normal vehicle operation.The adjustable rear protecting based on electromechanical integration having been developed that at present
Device, at high cost, weight is big, is unsuitable for universal on a large scale and promotes；Existing rear rigidity is larger simultaneously, collision
Energy is almost absorbed by car in the process, and car is caused to deform, and interior survival rate is lower.Therefore we have developed mechanical knot
Structure is simple, at the same energy absorption greatly can automatic controlled height energy-absorption type rear.
Summary of the invention
For the deficiency of existing rear protection device for commercial vehicle, the present invention provides after a kind of energy-absorption type of automatic controlled height
Protective device.Simple, low in cost, the reusable property of the apparatus structure is good, have obstacle crossing ability, can be steady step by step
Collision energy, in the height direction rigidity gradient distribution are absorbed, and can effectively prevent wear end collision of automobile and pierce truck bottom.
The present invention solves the technical problem the technical scheme adopted is that designing a kind of energy-absorption type of automatic controlled height
Rear, it is characterised in that the device includes: two terrain clearance detection agencies, two " 4 font " brackets, driver
Structure, stud crossbeam and energy-absorbing unit, two " 4 font " brackets are symmetrically mounted on two stringer lateral surfaces of commercial vehicle tail portion
On, it is linked together between two " 4 font " brackets by transmission mechanism, is passed through on the end face of " 4 font " bracket facing tailstock
Energy-absorbing unit connects stud crossbeam；Two side rail inners in commercial vehicle tail portion pass through connection two liftoff height of pin connection respectively
Spend detection agency；
Each terrain clearance detection agency includes connector, connecting rod, the plank with universal wheel, and the connector passes through
Connecting pin is installed on the side rail inner of commercial vehicle tail portion, and connector can be rotated around connecting pin, described connecting rod one end with connect
Head is connected through a screw thread, and one end is connect by lock pin with the plank with universal wheel；The lock pin is fixed on universal wheel
Universal wheel and ground face contact on plank, on the plank with universal wheel；When installation connecting rod angle with horizontal plane be no more than
60°；
Each " 4 font " bracket includes tilted supporter pipe, vertical rack pipe and vertical support frame, vertical support frame one end and tilted supporter
The vertical connection of pipe, the top of the other end connection vertical rack pipe of vertical support frame, the lower part of vertical rack pipe connects tilted supporter pipe
Lower part, and the angle of tilted supporter pipe and vertical rack pipe is 30 °；The one of the outer end face connection energy-absorbing unit of vertical rack pipe
The other end at end, energy-absorbing unit connects stud crossbeam；The distance on the energy-absorbing unit minimum point to ground is 300~400mm；
The transmission mechanism includes the rolling disk that drag link and two are equipped with rolling bearing；The both ends of the drag link pass through spiral shell
Mother is individually fixed on the middle position of the vertical rack pipe of two " 4 font " brackets, and two rolling disks are fixed on drag link, rolling
The axis of the connecting rod of the middle section and sides adjacent of disk is in same plane.
Compared with prior art, the beneficial effects of the present invention are:
Energy-absorption type rear energy-absorbing effect of the present invention is significant: when colliding with rear car, square tube stablizes energy-absorbing, and crossbeam can be right
Rear car plays good Intercepting effects, the energy-absorption box whole crumple when impact force is larger, and " 4 font " bracket can provide further
Energy-absorbing；The passability of apparatus of the present invention is preferable, at abrupt slope under encountering upper abrupt slope, is adjusted by the rotation on " 4 font " bracket
The road clearance of energy-absorbing unit.The present apparatus can provide ladder-like contact force, Ke Yiyou by energy-absorbing unit and " 4 font " bracket
Effect reduces the head acceleration peak value and peak force of car member.
Apparatus of the present invention can be used for truck rear lower, and setting is detected according to the terrain clearance of road surface automatic controlled height
Mechanism, while conventional square tube beam is replaced with stud crossbeam, it is horizontal to increase square tube and corresponding stud in energy-absorbing unit
Beam number improves the protective performance of rear, and automatic controlled height when encountering upward slope, descending or raised road surface improves
The passability of rear reduces the road clearance, and energy absorption is big, and energy-absorbing is steady.
Detailed description of the invention
Fig. 1 is the overall structure diagram of the energy-absorption type rear of automatic controlled height of the present invention；
Fig. 2 is the left view structural representation of the energy-absorption type rear of automatic controlled height of the present invention；
Fig. 3 is the overlooking structure diagram of the energy-absorption type rear of automatic controlled height of the present invention；
Fig. 4 is a kind of the vertical of " 4 font " bracket 2 of embodiment of energy-absorption type rear of automatic controlled height of the present invention
Body structural schematic diagram；
Fig. 5 is a kind of structure of the transmission mechanism 5 of embodiment of energy-absorption type rear of automatic controlled height of the present invention
Schematic diagram；
Fig. 6 is a kind of terrain clearance detection agency of embodiment of energy-absorption type rear of automatic controlled height of the present invention
Structural schematic diagram；
Fig. 7 is a kind of plank with universal wheel of embodiment of energy-absorption type rear of automatic controlled height of the present invention
Structural schematic diagram；
Automatic height adjustment schematic diagram when Fig. 8 is apparatus of the present invention descending；
Fig. 9 is a kind of side with cross reinforcing rib of embodiment of energy-absorption type rear of automatic controlled height of the present invention
The cross-sectional view of pipe；
Figure 10 is a kind of bowing for the stud crossbeam of embodiment of energy-absorption type rear of automatic controlled height of the present invention
Depending on structural schematic diagram；
Figure 11 is other types energy-absorbing unit；
In figure, 1- stringer；2- " 4 font " bracket；2-1 tilted supporter pipe；2-2 vertical support frame；2-3 vertical rack pipe；3- inhales
It can unit；4- stud crossbeam；5 transmission mechanisms；5-1 nut；5-2 drag link；5-3 rolling disk；6 terrain clearance detection agencies；6-1
Connector；6-2 connecting rod；Plank of the 6-3 with universal wheel；6-4 lock pin.
Specific embodiment
Below with reference to examples and drawings, in detail the narration present invention.Specific embodiment is only to the further detailed of invention
Illustrate and explain, the protection scope of the claims in the present invention is not limited with this.
The energy-absorption type rear (referring to Fig. 1-7, abbreviation device) of automatic controlled height of the present invention includes: two liftoff
6, two " 4 font " brackets 2 of height detecting mechanism, transmission mechanism 5, stud crossbeam 4 and energy-absorbing unit 3, two " 4 font " branch
Frame is symmetrically mounted on two 1 lateral surfaces of stringer of commercial vehicle tail portion, is connected between two " 4 font " brackets by transmission mechanism
Together, stud crossbeam 4 is connected by energy-absorbing unit on the end face of " 4 font " bracket facing tailstock；In commercial vehicle tail portion
Two side rail inners pass through connection two terrain clearance detection agencies of pin connection respectively；
Each terrain clearance detection agency includes connector 6-1, connecting rod 6-2, the plank 6-3 with universal wheel, described
Connector is installed on the side rail inner of commercial vehicle tail portion by connecting pin, and connector can be rotated around connecting pin, the connecting rod
One end is connected through a screw thread with connector, and one end is connect by lock pin 6-4 with the plank with universal wheel；The lock pin is fixed
In universal wheel and ground face contact on the plank with universal wheel, on the plank 6-3 with universal wheel；Connecting rod 6-2 and water when installation
Plane included angle is no more than 60 °；
Each " 4 font " bracket includes tilted supporter pipe 2-1, vertical rack pipe 2-3 and vertical support frame 2-2, vertical support frame 2-2
One end is vertical with tilted supporter pipe 2-1 to be connect, the top of the other end connection vertical rack pipe of vertical support frame, under vertical rack pipe
Portion connects the lower part of tilted supporter pipe, and the angle of tilted supporter pipe 2-1 and vertical rack pipe 2-3 is 30 °；The outer end of vertical rack pipe
Face connects one end of energy-absorbing unit 3, and the other end of energy-absorbing unit 3 connects stud crossbeam 4；The energy-absorbing unit minimum point to ground
The distance in face is 300~400mm；
The transmission mechanism 5 includes the rolling disk 5-3 that drag link 5-2 and two are equipped with rolling bearing；The two of the drag link
On the middle position for holding the vertical rack pipe for being individually fixed in two " 4 font " brackets by nut 5-2, two rolling disks are fixed on
On drag link, the axis of the connecting rod 6-2 of the middle section and sides adjacent of rolling disk is in same plane.
Further characteristic of the invention is that the energy-absorbing unit is made of three square tubes with induction slot, three square tubes
One end be equidistantly connected to according to upper and lower position on the vertical rack pipe of " 4 font " bracket respectively, the other end of three square tubes
It is connect respectively with a stud crossbeam；The cross section of the stud crossbeam is " day " font, a stud crossbeam connection
Two square tubes being arranged with " 4 font " bracket with position；Cross reinforcing rib is equipped in underlying two square tubes.
Further characteristic of the invention is that the length of the vertical rack pipe 2-3 is 400mm.It is propped up vertically in the present invention
The length of frame pipe on force transferring part stringer main in car along to matching at a distance from subframe lower edge, in 400mm or so, energy
Enough guarantee that rear is all overlapped with the main force transferring part of car substantially.
The working principle of apparatus of the present invention is: connector 6-1 can be rotated around central axis, connecting rod 6-2 by screw thread with
Connector links together, and connecting rod 6-2 angle with horizontal plane is no more than 60 ° when installation.Plank 6-3 with universal wheel passes through
Lock pin links together with connecting rod 6-2, and lock pin 6-4 can prevent connecting rod 6-2 from turning to the plank 6-3 with universal wheel
The other side.Universal wheel is contacted with road surface always when driving on smooth-riding surface.Drag link 5-2 is fixed on perpendicular by bolt and nut
On the middle position straight bracket pipe 2-3, rolling disk 5-3, the middle section of rolling disk 5-3 and the axis of connecting rod 6-2 are fixed on drag link 5-2
Line is in same plane.When driving to upward slope or descending road surface, connecting rod 6-2 surrounds the central axial upper rotation of connector 6-1,
Connecting rod 6-2 is contacted with rolling disk 5-3 simultaneously, and rolling disk 5-3 is pushed to move upwards, and rolling disk 5-3 drives " 4 font " to prop up by drag link
Frame 2 and energy-absorbing unit 3 and stud crossbeam 4 move upwards.When rear-end collision occurs, energy-absorbing unit 3 and stud crossbeam 4 are
Main energy absorbing component, while connecting rod 6-2 can also play the role of energy-absorbing and prevent car from piercing.
The present invention selects stud crossbeam, relative to existing simple square tube, round tube or channel steel cross beam, bending resistance is good,
Energy-absorbing effect is good.Square tube with induction slot can reduce contact peak force, stabilization, and energy-absorbing effect is good.
Energy-absorbing unit in the present invention can also be shorter than the connection of outer tube reinforcing rib for double round tubes of reinforcing rib connection, inner tube
Double round tubes, the round tube with reinforcing rib, the short round tube of reinforcing rib, 12 right angle thin-wall tubes, multilayer conical tube etc. (referring to Figure 11).
Embodiment 1
The energy-absorption type rear of the present embodiment automatic controlled height includes two terrain clearance detection agency 6, two
" 4 font " bracket 2, transmission mechanism 5, stud crossbeam 4 and energy-absorbing unit 3, two " 4 font " brackets are symmetrically mounted on commercial vehicle
On two 1 lateral surfaces of stringer of tail portion, linked together between two " 4 font " brackets by transmission mechanism, " 4 font " bracket
Stud crossbeam 4 is connected by energy-absorbing unit on the end face of facing tailstock；Two side rail inners in commercial vehicle tail portion lead to respectively
Cross two terrain clearance detection agencies of connection pin connection；
Each terrain clearance detection agency includes connector 6-1, connecting rod 6-2, the plank 6-3 with universal wheel, described
Connector is installed on the side rail inner of commercial vehicle tail portion by connecting pin, and connector can be rotated around connecting pin, the connecting rod
One end is connected through a screw thread with connector, and one end is connect by lock pin 6-4 with the plank with universal wheel；The lock pin is fixed
In universal wheel and ground face contact on the plank with universal wheel, on the plank 6-3 with universal wheel；Connecting rod 6-2 and water when installation
Plane included angle is 45 °；
Each " 4 font " bracket includes tilted supporter pipe 2-1, vertical rack pipe 2-3 and vertical support frame 2-2, vertical support frame 2-2
One end is vertical with tilted supporter pipe 2-1 to be connect, the top of the other end connection vertical rack pipe of vertical support frame, under vertical rack pipe
Portion connects the lower part of tilted supporter pipe, and the angle of tilted supporter pipe 2-1 and vertical rack pipe 2-3 is 30 °；The outer end of vertical rack pipe
Face connects one end of energy-absorbing unit 3, and the other end of energy-absorbing unit 3 connects stud crossbeam 4；The length of vertical rack pipe is
400mm, the distance of the energy-absorbing unit minimum point to ground are 300mm；
The transmission mechanism 5 includes the rolling disk 5-3 that drag link 5-2 and two are equipped with rolling bearing；The two of the drag link
On the middle position for holding the vertical rack pipe for being individually fixed in two " 4 font " brackets by nut 5-2, two rolling disks are fixed on
On drag link, the axis of the connecting rod 6-2 of the middle section and sides adjacent of rolling disk is in same plane.
Stringer 1 is used to support " 4 font " bracket 2, and the energy-absorbing unit is made of three square tubes with induction slot, three sides
One end of pipe is equidistantly connected on the vertical rack pipe of " 4 font " bracket respectively according to upper and lower position, three square tubes it is another
End is connect with a stud crossbeam respectively；The cross section of the stud crossbeam is " day " font, and a stud crossbeam connects
Connect two square tubes being arranged with " 4 font " bracket with position；Intermediate cross reinforcing rib is equipped in underlying two square tubes.
Spacing between three square tubes of the present embodiment is all 100mm, and the material of square tube is made of aluminium alloy, the stud
Crossbeam 4 is having a size of 60mm × 120mm.This device be installed after be located at bottom square tube apart from ground level be 300mm.
The present invention does not address place and is suitable for the prior art.
Claims (4)
1. a kind of energy-absorption type rear of automatic controlled height, it is characterised in that the device includes: that two terrain clearances are visited
Mechanism, two " 4 font " brackets, transmission mechanism, stud crossbeam and energy-absorbing unit, two " 4 font " brackets are surveyed to be symmetrically installed
On two stringer lateral surfaces of commercial vehicle tail portion, linked together between two " 4 font " brackets by transmission mechanism, " 4 words
Stud crossbeam is connected by energy-absorbing unit on the end face of shape " bracket facing tailstock；Two side rail inners in commercial vehicle tail portion
Pass through connection two terrain clearance detection agencies of pin connection respectively；
Each terrain clearance detection agency includes connector, connecting rod, the plank with universal wheel, and the connector passes through connection
Pin is installed on the side rail inner of commercial vehicle tail portion, and connector can be rotated around connecting pin, and described connecting rod one end and connector are logical
Threaded connection is crossed, one end is connect by lock pin with the plank with universal wheel；The lock pin is fixed on the plank with universal wheel
On, universal wheel and ground face contact on the plank with universal wheel；Connecting rod angle with horizontal plane is no more than 60 ° when installation；
Each " 4 font " bracket includes tilted supporter pipe, vertical rack pipe and vertical support frame, and vertical support frame one end and tilted supporter pipe hang down
Direct-connected to connect, the top of the other end connection vertical rack pipe of vertical support frame, the lower part of vertical rack pipe connects under tilted supporter pipe
Portion, and the angle of tilted supporter pipe and vertical rack pipe is 30 °；One end of the outer end face connection energy-absorbing unit of vertical rack pipe, inhales
The other end of energy unit connects stud crossbeam；The distance on the energy-absorbing unit minimum point to ground is 300 ~ 400mm；
The transmission mechanism includes the rolling disk that drag link and two are equipped with rolling bearing；The both ends of the drag link pass through nut point
It is not fixed on the middle position of the vertical rack pipe of two " 4 font " brackets, two rolling disks are fixed on drag link, rolling disk
The axis of the connecting rod of middle section and sides adjacent is in same plane.
2. the energy-absorption type rear of automatic controlled height according to claim 1, which is characterized in that the energy-absorbing list
Member is made of three square tubes with induction slot, and one end of three square tubes is equidistantly connected to " 4 font " according to upper and lower position respectively
On the vertical rack pipe of bracket, the other end of three square tubes is connect with a stud crossbeam respectively；Underlying two sides
Cross reinforcing rib is equipped in pipe.
3. the energy-absorption type rear of automatic controlled height according to claim 1, which is characterized in that the vertical branch
The length of frame pipe is 400mm.
4. the energy-absorption type rear of automatic controlled height according to claim 1, which is characterized in that the energy-absorbing list
Member is double round tubes, the round tube with reinforcing rib, 12 right angle thin-wall tubes or the multilayer conical tube of reinforcing rib connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811397918.9A CN109291869B (en) | 2018-11-22 | 2018-11-22 | Automatic height-adjusting energy-absorbing rear protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811397918.9A CN109291869B (en) | 2018-11-22 | 2018-11-22 | Automatic height-adjusting energy-absorbing rear protection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109291869A true CN109291869A (en) | 2019-02-01 |
| CN109291869B CN109291869B (en) | 2023-10-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811397918.9A Active CN109291869B (en) | 2018-11-22 | 2018-11-22 | Automatic height-adjusting energy-absorbing rear protection device |
Country Status (1)
| Country | Link |
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| CN (1) | CN109291869B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110395204A (en) * | 2019-08-01 | 2019-11-01 | 武汉理工大学 | A kind of commercial vehicle protective device |
| BE1028142B1 (en) * | 2020-03-11 | 2021-10-11 | A & D Trucks & Trailers Opbouw Nv | IMPROVED UNDER RUN PROTECTION AND TRAILER WITH IMPROVED UNDER RUN PROTECTION |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110395204A (en) * | 2019-08-01 | 2019-11-01 | 武汉理工大学 | A kind of commercial vehicle protective device |
| CN110395204B (en) * | 2019-08-01 | 2022-11-25 | 武汉理工大学 | Commercial car protector |
| BE1028142B1 (en) * | 2020-03-11 | 2021-10-11 | A & D Trucks & Trailers Opbouw Nv | IMPROVED UNDER RUN PROTECTION AND TRAILER WITH IMPROVED UNDER RUN PROTECTION |
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| Publication number | Publication date |
|---|---|
| CN109291869B (en) | 2023-10-10 |
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