CN115233593A - Road anticollision section of thick bamboo is filled to gradient honeycomb - Google Patents
Road anticollision section of thick bamboo is filled to gradient honeycomb Download PDFInfo
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- CN115233593A CN115233593A CN202210756568.0A CN202210756568A CN115233593A CN 115233593 A CN115233593 A CN 115233593A CN 202210756568 A CN202210756568 A CN 202210756568A CN 115233593 A CN115233593 A CN 115233593A
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F15/00—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact
- E01F15/02—Continuous barriers extending along roads or between traffic lanes
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F15/00—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact
- E01F15/02—Continuous barriers extending along roads or between traffic lanes
- E01F15/04—Continuous barriers extending along roads or between traffic lanes essentially made of longitudinal beams or rigid strips supported above ground at spaced points
- E01F15/0492—Provisions for guiding in combination with rails, e.g. tire-gutters
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Abstract
The invention belongs to the technical field of traffic safety facilities and anti-collision facilities, and relates to a gradient honeycomb filling highway anti-collision barrel. The device comprises a middle shaft, a steel plate, an upright post, a rotary drum, a spring, a supporting seat and a gradient honeycomb; the supporting seat is internally provided with a threaded hole; a gradient honeycomb filling rotary drum; the number of the middle shafts is the same as that of the rotary drums; the surface of the supporting seat is provided with a threaded hole for fixing; the upright posts are connected with steel plates, and the steel plates are connected with the upright posts; the steel plate is connected with the shaft through a spring, and the steel plate is fixed with the spring and the shaft is fixed with the spring through bolts; the outer side wall of the middle shaft is connected with the rotary drum; the rotary drum is made of a TPU and EVA composite material; the gradient honeycomb is formed by connecting an inner circle and a plurality of circular arcs, the circle center of each gradient circular arc of the gradient honeycomb is used as one part of a circular array, the circular arcs of the same level after the array are equiangular, and the radius of the circular arcs and the number of the circular arrays are adjustable. The anti-collision barrel has good energy absorption efficiency and speed reduction effect, and is relatively simple in structure and low in cost.
Description
Technical Field
The invention belongs to the technical field of traffic safety facilities and anti-collision facilities, and relates to a gradient honeycomb filling highway anti-collision barrel.
Background
The highway crash barrier is the most important traffic infrastructure, and is one of the important safeguard facilities for maintaining the highway safety. When a vehicle runs on a highway, particularly an expressway, once the vehicle has an accident and the direction of the vehicle is out of control, the vehicle easily rushes out of the highway, so that the danger is extremely high, and a highway anti-collision device is needed to be arranged to reduce the damage caused by the accident. The highway is usually a semi-rigid guardrail, and when a vehicle impacts the guardrail, on one hand, the energy can be absorbed through the deformation of the guardrail, so that the damage and the injury to the vehicle and people are reduced. On the other hand, the driving direction of the vehicle is forcibly corrected, and the vehicle is prevented from rushing out of the road. However, due to the fact that vehicles on the highway have very high running speed and very high kinetic energy, the effect of the guardrail is very limited, and the vehicles can easily crash the guardrail and rush out of the road or rush out reversely to bump other normally running vehicles on the road, so that larger accidents are caused. In order to strengthen the impact resistance and the energy absorption of the guardrail, a rotary drum type guardrail appears in recent years, the guiding capacity of the guardrail is strengthened, a part of energy is absorbed through the rotation of the rotary drum, the impact area of the guardrail can be increased, the impact strength which is locally received is greatly reduced, and the impact injury which is received by a vehicle can be effectively reduced. However, when the guardrail is used, energy conversion hardly occurs at the moment of impact, and the vehicle still carries large kinetic energy when being ejected reversely, so that the severity of a secondary accident can be increased. Patent CN 211690088U transfers the impact force to the water in the cylinder to make it pressed, and the flip is opened under the pressure of the water to spray water to consume energy. In addition, accidents caused by brake failure occur on the expressway, so that an emergency lane for braking is arranged on the expressway, but since the emergency lane is not arranged on all road sections, in the road sections without the emergency lane, stalled vehicles need to reduce the kinetic energy of the vehicles by impacting a guardrail, but the speed can be reduced by impacting the guardrail, but the vehicles and the guardrail can be damaged, and personnel can be injured.
Based on the analysis, the highway anti-collision fence has wide application prospects, but the existing highway anti-collision device has many defects. The prior art has the higher rotary drum formula anticollision barrier of cost, and the rotary drum is inside to be equipped with members such as bearing and a large amount of springs, and this anticollision barrier energy-absorbing effect remains to be improved and should not use on a large scale.
Current rotary drum formula anticollision fence can play certain guard action, but the device cost is higher and anticollision fence when colliding with the car, and the energy-absorbing effect remains to be strengthened, and when the car collided with anticollision fence promptly, the car probably was rebounded road central authorities to lead to the secondary damage. The existing highway anti-collision fences have anti-collision effects, but the deceleration effect of the existing highway anti-collision fences in non-vertical collision needs to be enhanced.
The honeycomb structure is originally originated from bionics, and compared with the solid materials of the same type, the honeycomb sandwich structure has the characteristics of high specific strength, large specific rigidity, light weight, high energy absorption capacity and the like. The method has the advantages that the method can be widely applied to the fields of aerospace, transportation, vehicle engineering and the like. In the prior art, a negative poisson ratio honeycomb is used as a filling material to perform anti-collision protection on a pier; and the honeycomb lattice double-cylinder anti-collision facility is also used for vertical bearing structures such as piers, water buildings and the like. The design of honeycomb and the application of energy absorption in highway crash tubes is still very limited. To above problem, this application is dedicated to and is studied from structure and energy-absorbing efficiency promotion two aspects, realizes slowing down and anticollision effect.
Disclosure of Invention
The invention aims to provide a gradient honeycomb filling road anti-collision barrel aiming at the defects of high cost, poor energy absorption effect, non-ideal deceleration effect and easy secondary damage of the conventional road anti-collision device.
In order to achieve the purpose, the following technical scheme is adopted:
the gradient honeycomb filled road anti-collision barrel comprises a middle shaft, a steel plate, a stand column, a rotary drum, a spring, a supporting seat and gradient honeycombs;
the steel plate is a U-shaped steel plate; filling gradient honeycombs into the rotary drum; the surface of the supporting seat is provided with a threaded hole for fixing;
the upright posts are connected with steel plates; the steel plate is connected with the middle shaft through a spring, and the outer side wall of the middle shaft is connected with a rotary drum; the supporting seat is arranged at the bottom of the upright post;
the gradient honeycomb is formed by connecting an inner circle and a plurality of circular arcs; the circular arcs of each gradient of the gradient honeycomb are part of a circumferential array with the center of the inner circle as the center, the same-level circular arcs in the array are equiangular, and the radius of the circular arcs and the number of the circumferential arrays are adjustable;
the lower end of the middle shaft is provided with a shaft shoulder for positioning the rotary drum; the gradient honeycombs are filled in the rotary drum to increase the energy absorption capacity of the anti-collision drum; the drum rotates around the central shaft for guiding and decelerating.
The support seat is internally provided with a threaded hole; the number of the middle shafts is the same as that of the rotary drums, and the steel plates are connected with the upright posts through bolts.
The middle shaft and the rotary drum are in direct clearance fit connection, and certain friction force exists between the rotary drum and the middle shaft.
The steel plate and the spring, and the shaft and the spring are fixed by bolts, and the steel plate can prevent the automobile from rushing out of the road surface.
The material of rotary drum is TPU and EVA combined material, sets up the reflection of light strip on the rotary drum and plays the warning effect.
The number of turns of the spring ranges from 10 to 20 turns, the intermediate diameter ranges from 10 to 20cm, the rigidity is represented by the wire diameter of the spring, and the speed limit is adjusted according to the highway.
The thickness range of the steel plate is 0.3-1.2cm, and the width range is 15-25cm.
The height range of the rotary drum is 80-150cm, and the diameter range of the rotary drum is 50-90cm; the distance between adjacent drums is 100-180cm.
The stage range of the gradient honeycomb, namely the arc, is 3-8 stages, and the relative density range of the honeycomb is 0.2-0.4.
The number of the springs is more than or equal to 2, and the springs are matched with the rotary drum to decelerate an out-of-control vehicle, and the deceleration is realized through combined action of deformation of the rotary drum, bending of the springs and stretching of the rotary drum.
Advantageous effects
Compared with the conventional road anti-collision device, the gradient honeycomb filling road anti-collision tube has the following beneficial effects:
1. the anti-collision barrel is filled with the gradient honeycombs, so that the safety of a driver and passengers is greatly protected, and the anti-collision barrel has a good application prospect so as to enhance the energy absorption capacity and avoid secondary accidents or reduce the strength of the secondary accidents;
2. compared with the prior art, the anti-collision barrel not only has good energy absorption efficiency during collision, protects personal safety and vehicle body damage as much as possible, but also has a deceleration effect and can be used for decelerating out-of-control vehicles; the method has better protection effect on some vehicles with brake failure;
3. the gradient honeycomb filling of the anti-collision barrel is calculated according to finite elements, the design greatly enhances the energy absorption capacity, can prevent the vehicle from still carrying larger kinetic energy when reversely popped, and avoids or reduces the strength of secondary accidents;
4. compared with regular hexagonal honeycombs with the same relative density, the gradient honeycomb structure has better energy absorption effect when being filled in an anti-collision barrel and impacted in the radial direction;
5. the anti-collision barrel is relatively simple in structure and low in cost.
Drawings
FIG. 1 is a front view of the composition and connection relationship of a gradient honeycomb filled highway crash tube of the present invention;
FIG. 2 is a left side view of the composition and connection relationship of a gradient honeycomb filled highway crash barrier of the present invention;
FIG. 3 is an installation view of a drum and a central shaft embodying the present invention;
FIG. 4 is a flow chart of the steering operation of a rotor of the present invention;
FIG. 5 is a diagram of the deceleration of a drum and spring in accordance with the present invention;
FIG. 6 is a gradient honeycomb fill installation of the present invention;
FIG. 7 is a gradient-based honeycomb design of the present invention;
FIG. 8 is a graph of the energy absorbed by the gradient and regular hexagonal honeycombs of the invention when impacted radially;
FIG. 9 is a comparison of vehicle speed for radial impacts between the gradient and regular hexagonal cells of the present invention;
FIG. 10 is a top view of a different number of springs connected to the bottom bracket and plate of the present invention;
illustration of the drawings:
1-middle shaft, 2-steel plate, 3-upright post, 4-rotary drum, 5-spring, 6-support seat and 7-gradient honeycomb.
Detailed Description
The gradient honeycomb filled road crash tube according to the present invention will be further illustrated and described in detail with reference to the accompanying drawings and examples.
Example 1
The anti-collision barrel is relatively simple in structure and low in cost, and according to finite element calculation, the gradient honeycomb filling design of the anti-collision barrel enables the energy absorption capacity to be greatly enhanced, large kinetic energy can be prevented from being carried when a vehicle is ejected reversely, and the strength of secondary accidents is avoided or reduced.
The working principle and the working process of the anti-collision barrel are as follows:
when an automobile impacts the anti-collision barrel, the rotating barrel 4 is rotated by acting force to guide the automobile, meanwhile, the rotating barrel 4 and the gradient honeycomb 7 filled in the barrel are compressed and can play a good role in speed reduction and energy absorption, and a part of automobile kinetic energy is consumed by the bending of the spring 5 and the rotation of the rotating barrel 4. And the automobile can strike a plurality of rotary drums 4 in the collision process, and the plurality of rotary drums 4 absorb the kinetic energy of the automobile in sequence, thereby playing better deceleration and protection roles. The gradient honeycomb 7 filled in the rotary drum 4 reduces the direct acting force applied to the middle shaft 1 and the rotary drum 4, and the steel plate 2 and the upright post 3 can prevent the automobile from rushing out of the road surface.
The gradient honeycomb 7 is filled, and in the concrete implementation: the outermost arc of the gradient honeycomb 7 is tangent to the inner wall of the rotary drum, the diameter of the inner circle of the gradient honeycomb 7 is slightly larger than that of the middle shaft, and the inner circle of the gradient honeycomb 7 is sleeved on the middle shaft 1. The gradient honeycomb 7 can absorb energy which is several times more than the deformation of the cylinder wall by deformation, thereby enhancing the energy absorption capability. Compared with regular hexagonal honeycombs with the same relative density, the gradient honeycombs 7 have better energy absorption effect when filled in the rotary drum 4 and subjected to radial impact.
The steel plate 2 and the upright post 3 can prevent the automobile from rushing out of the road surface, avoid secondary accidents or reduce the intensity of the secondary accidents, and greatly protect the safety of drivers and passengers. Therefore, the anti-collision barrel not only has good energy absorption efficiency during collision, protects personal safety and vehicle body damage as much as possible, but also has a deceleration effect and is used for decelerating vehicles out of control; the vehicle with the brake failure can be better protected.
The existing speed reduction scheme utilizes direct friction between a vehicle and a protective guard to reduce the speed, so that the serious damage of the vehicle can be reduced or avoided. However, the high-speed friction easily causes the fire of the vehicle and the safety is not guaranteed. Thus, with the crash tube described herein, after an uncontrolled vehicle actively impacts the crash tube, the crash tube decelerates the vehicle through rotation of the drum 4 and bending and stretching of the spring 5, as shown in fig. 5.
This example illustrates a specific implementation of the gradient honeycomb filled highway crash tube in a highway scenario. The gradient honeycomb filling road anti-collision barrel is shown in figures 1 and 2 and comprises a middle shaft 1, a steel plate 2, an upright post 3, a rotary drum 4, a spring 5, a supporting seat 6 and gradient honeycombs 7.
In specific implementation, the supporting seat 6 comprises threaded holes, and the number of the threaded holes is 4; the supporting seat 6 is installed at the bottom of the upright post 3, and a threaded hole is opened on the surface of the supporting seat 6 and is used for being fixed on the ground. The upright post 3 is connected with a steel plate 2, and the steel plate 2 is connected with the upright post 3 through bolts. The steel plate 2 is connected with the middle shaft 1 through a spring 5, and the steel plate 2 is fixed with the spring 5 and the middle shaft 1 is fixed with the spring 5 through bolts.
In specific implementation, the number of the springs 5 is 2, and can be more than 2 according to the connection requirement, and the connection is shown in fig. 2. When the number of springs 5 is 4, the attachment of the springs 5 makes the drum 4 more firmly attached by making the triangle between the two springs 5 and the steel plate 2 by using the triangle stability, see fig. 10. The supporting seat 6 is arranged at the bottom of the upright post 3, threaded holes are formed in the surface of the supporting seat, and the number of the threaded holes is 4, so that the supporting seat is fixed on the ground. The upright post 3 is connected with a steel plate 2, and the steel plate is connected with the upright post 3 through bolts. The steel plate 2 is connected with the middle shaft 1 through the spring 5, the steel plate and the spring 5 are fixed with the middle shaft 1 and the spring 5 through bolts, and the installation schematic diagram of the middle shaft 1 in the concrete implementation is shown in fig. 3.
The number of turns of each spring 5 is 15-20, the pitch diameter of each spring 5 is set to be about 15-20cm, the stiffness (spring wire diameter) of each spring 5 is adjusted according to the speed limit of a road, and the speed reduction stress of the rotary drum 4 and the springs 5 is shown in figure 5.
The outer side wall of the middle shaft 1 is connected with a rotary drum 4 filled with gradient honeycombs 7, and the gradient honeycombs 7 in the rotary drum 4 greatly enhance the energy absorption capacity of the anti-collision barrel. As shown in FIG. 4, the vehicle impacts a plurality of rotating drums in the impact process, and the rotating drums absorb the kinetic energy of the vehicle in sequence, so that the vehicle can be decelerated and protected better, the vehicle can be prevented from carrying larger kinetic energy when being ejected reversely, and the intensity of secondary accidents is avoided or reduced.
In specific implementation, compared with a regular-hexagonal deformed honeycomb with the same relative density of 0.2, the structure of the gradient honeycomb 7 in fig. 7 has better energy absorption effect when being filled in an anti-collision barrel and being impacted radially. The design is formed by connecting circular arcs except for an inner circle, and the radiuses of the circular arcs are increased from inside to outside in sequence; each gradient circular arc of the gradient honeycomb 7 is circumferentially arrayed by taking the center of an inner circle as the center, and the circular arcs of the same level are equiangularly arrayed; and the radius of the circular arc and the number of the circumferential arrays are adjustable. Because of the expressway, vehicles run fast, the number of the designed honeycomb gradient 7, namely the number of the circular arcs, is 6-8, the filling installation of the gradient honeycomb 7 is shown in figure 6, and the relative density is set to be 0.4.
As shown in figure 3, a shaft shoulder is arranged at the joint of the lower end of the middle shaft 1 and the rotary drum 4 for positioning, the middle shaft 1 and the rotary drum 4 are in direct clearance fit connection, so that the rotary drum 4 rotates around the middle shaft 1, but certain friction force is used for guiding and decelerating. Each middle shaft 1 is connected with the steel plate 2 through two springs 5 with higher rigidity, and the springs 5 and the rotary drum 4 are matched to actively decelerate the vehicle by bending. The steel plate 2 is a U-shaped steel plate, the thickness of the steel plate is set to be 0.8-1.2cm, and the width of the steel plate is set to be 20-25cm; the number of the steel plates 2 is two, so that the automobile is prevented from rushing out of the road surface.
The rotary drum 4 is made of TPU and EVA composite materials; the upper surface is provided with a reflective strip for warning; the drum height of the rotating drum 4 is 80-150cm, the diameter of the rotating drum 4 is 70-90cm, and the distance between two adjacent rotating drums 4 is 140-180cm. The distance from the bottom of the drum 4 to the road surface is 10-20cm.
Example 2
The embodiment illustrates the specific implementation of the gradient honeycomb filled road anti-collision tube in the urban road scene. The implementation is similar to the summary and embodiments. The differences in the specific implementation are as follows:
because of the urban road, the vehicles run slowly, the grade of the designed honeycomb gradient, namely the arc grade is 5-6, and the relative density of the honeycomb is set to be 0.3. The distance from the bottom of the rotating drum 4 to the road surface is 15-20cm.
Each middle shaft is connected with the steel plate through two springs with higher rigidity, and the springs and the rotary drum are matched to actively decelerate the vehicle by utilizing bending. The number of turns of each spring is set to be 10-15 turns, the pitch diameter of each spring is set to be about 10-15cm, and the rigidity (the wire diameter of each spring) of each spring is adjusted according to the speed limit of the highway.
The steel plate 2 is a U-shaped steel plate, the thickness of the steel plate is set to be 0.3-0.8cm, and the width of the steel plate is set to be 15-20cm. The number of the steel plates 2 is two, so that the automobile can be prevented from rushing out of the road surface. The height of the rotary drum is 100-150cm, the diameter of the rotary drum is 50-70cm, and the distance between two adjacent rotary drums is 100-140cm. The distance between the bottom of the rotary drum and the road surface is 15-20cm.
The surface of the supporting seat 6 is provided with a threaded hole for fixing on the ground; the number of the threaded holes is more than or equal to 2;
example 3
The embodiment illustrates that the gradient honeycomb filling road anti-collision barrel comprises a middle shaft 1, a steel plate 2, an upright post 3, a rotary drum 4, a spring 5, a support seat 6 and a gradient honeycomb 7. The collision avoidance cylinder is implemented in a mountain and highway scene. The implementation is similar to the summary and embodiments. The differences in the specific implementation are as follows:
in the specific implementation: the gradient honeycomb is a two-dimensional gradient honeycomb or a three-dimensional gradient honeycomb;
the surface of the supporting seat 6 at the bottom of the upright post 3 is provided with a threaded hole for fixing on the ground. The upright post 3 is connected with a steel plate 2, and the steel plate is connected with the upright post 3 through bolts. The steel plate 2 is connected with the central shaft 1 through a spring 5, and the steel plate and the spring, and the shaft and the spring are fixed through bolts. The outer side wall of the middle shaft 1 is connected with a rotary drum 4; the rotating cylinder 4 is filled with gradient honeycombs 7, so that the energy absorption capacity of the anti-collision cylinder is improved.
Because of the mountain road, the vehicle runs slowly, the grade of the designed honeycomb gradient, namely the arc is 3-5 grades, and the relative density of the honeycomb is set to be 0.2.
The number of turns of each spring is set to be 10-15 turns, the pitch diameter of each spring is set to be about 10-15cm, and the rigidity (wire diameter of each spring) of each spring is adjusted according to the speed limit of a road.
The steel plates 2 are U-shaped steel plates, the number of the steel plates 2 is two, the thickness of each steel plate 2 is set to be 0.8-1.2cm, and the width of each steel plate 2 is set to be 20-25cm. Because of the mountain road, the steel plate can be thickened properly to prevent the automobile from rushing out of the road surface. The drum height of the drum 4 is 80-130cm, the diameter of the drum 4 is 50-70cm, the distance between two adjacent drums 4 is 100-140cm, and the distance between the bottom of the drum 4 and the road surface is 15-20cm.
FIG. 8 is a graph of the energy absorbed when subjected to a radial impact for a relative density of 0.2 for both the gradient and regular hexagonal honeycombs in the present invention; as can be seen from the figure, the absorption energy of the regular hexagonal honeycomb is much lower than that of the gradient honeycomb 7 proposed in the present application.
Fig. 9 is a comparison of the vehicle speed when the gradient honeycomb 7 and the regular hexagon honeycomb are subjected to radial impact when the relative densities of both are 0.2, and it can be seen from the combined comparison with fig. 8 that the gradient honeycomb 7 of the present invention can realize the same excellent performance as the regular hexagon honeycomb in reducing the speed within 0.0013 second in a short time while greatly improving the energy absorption.
While the foregoing is directed to the preferred embodiment of the present invention, it is not intended that the invention be limited to the embodiment and the drawings disclosed herein. Equivalents and modifications may be made without departing from the spirit of the disclosure, which is to be considered as within the scope of the invention.
Claims (10)
1. A road anti-collision tube filled with gradient honeycombs is characterized by comprising a middle shaft, a steel plate, an upright post, a rotary drum, a spring, a supporting seat and gradient honeycombs;
the steel plate is a U-shaped steel plate; filling gradient honeycombs into the rotary drum; the surface of the supporting seat is provided with a threaded hole for fixing;
the upright posts are connected with steel plates; the steel plate is connected with the middle shaft through a spring, and the outer side wall of the middle shaft is connected with a rotary drum; the supporting seat is arranged at the bottom of the upright post;
the gradient honeycomb is formed by connecting an inner circle and a plurality of circular arcs; the circular arcs of each gradient of the gradient honeycomb are part of a circumferential array by taking the circle center of an inner circle as the center, the circular arcs of the same level in the array are equiangular, and the radius of the circular arcs and the number of the circumferential arrays are adjustable;
the lower end of the middle shaft is provided with a shaft shoulder for positioning the rotary drum; the gradient honeycombs are filled in the rotary cylinder to increase the energy absorption capacity of the anti-collision cylinder; the drum rotates around the central shaft for guiding and decelerating.
2. The road crash tube of claim 1, wherein the support seat includes a threaded hole therein; the number of the middle shafts is the same as that of the rotary drums, and the steel plates are connected with the upright columns through bolts.
3. The road crash tube of claim 1, wherein the central shaft and the rotating cylinder are directly connected in a clearance fit, and a certain friction force exists between the rotating cylinder and the central shaft.
4. The road crash tube of claim 1, wherein the steel plate and the spring, and the shaft and the spring are fixed by bolts, and the steel plate prevents the vehicle from rushing out of the road.
5. The road crash tube as claimed in claim 1, wherein the material of the rotating tube is TPU and EVA composite material, and a reflective strip is provided on the rotating tube for warning.
6. The road crash tube of claim 1, wherein the number of turns of the spring ranges from 10 to 20 turns, the pitch diameter ranges from 10 to 20cm, the stiffness is characterized by the wire diameter of the spring and is adjusted according to the speed limit of the road.
7. The road crash tube as recited in claim 1, wherein the steel plate has a thickness in the range of 0.3-1.2cm and a width in the range of 15-25cm.
8. The road crash drum of claim 1, wherein the height of the drum is in the range of 80-150cm, and the diameter of the drum is in the range of 50-90cm; the distance between adjacent drums is 100-180cm.
9. The road crash tube as set forth in claim 1, wherein the gradient cells have a gradient, i.e., arc, in a range of 3-8 levels and a relative density of cells in a range of 0.2-0.4.
10. The highway crash drum of claim 1, wherein the number of springs is 2 or more and the springs and the drum cooperate to decelerate an out of control vehicle, particularly by the combined action of deformation of the drum, bending of the springs and stretching.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210756568.0A CN115233593A (en) | 2022-06-29 | 2022-06-29 | Road anticollision section of thick bamboo is filled to gradient honeycomb |
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| CN202210756568.0A CN115233593A (en) | 2022-06-29 | 2022-06-29 | Road anticollision section of thick bamboo is filled to gradient honeycomb |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004124644A (en) * | 2002-10-07 | 2004-04-22 | Chubu Kagaku Kikai Seisakusho:Kk | Shock absorber, method of manufacturing shock absorber, and shock absorbing material |
| CN107974979A (en) * | 2017-12-30 | 2018-05-01 | 蒋春霞 | A kind of bridge pier protective device |
| CN110043593A (en) * | 2019-04-24 | 2019-07-23 | 东北林业大学 | A kind of honeycomb energy absorbing structure and absorbing structure preparation method |
| WO2020061635A1 (en) * | 2018-09-27 | 2020-04-02 | Tas Roads Pty Ltd | Foldable temporary and portable road sign structure |
| CN111593690A (en) * | 2020-05-21 | 2020-08-28 | 浙江机电职业技术学院 | Buffering formula highway rail guard |
| CN112227187A (en) * | 2020-09-30 | 2021-01-15 | 北京工业大学 | Pier buffer stop is filled to negative poisson's ratio honeycomb of layering gradient |
| CN214245503U (en) * | 2020-12-30 | 2021-09-21 | 东北林业大学 | Rotatory energy-absorbing structure highway safety rail guard |
| CN215976846U (en) * | 2021-10-27 | 2022-03-08 | 烟台市公路事业发展中心 | Anti-collision device for highway bridge |
-
2022
- 2022-06-29 CN CN202210756568.0A patent/CN115233593A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004124644A (en) * | 2002-10-07 | 2004-04-22 | Chubu Kagaku Kikai Seisakusho:Kk | Shock absorber, method of manufacturing shock absorber, and shock absorbing material |
| CN107974979A (en) * | 2017-12-30 | 2018-05-01 | 蒋春霞 | A kind of bridge pier protective device |
| WO2020061635A1 (en) * | 2018-09-27 | 2020-04-02 | Tas Roads Pty Ltd | Foldable temporary and portable road sign structure |
| CN110043593A (en) * | 2019-04-24 | 2019-07-23 | 东北林业大学 | A kind of honeycomb energy absorbing structure and absorbing structure preparation method |
| CN111593690A (en) * | 2020-05-21 | 2020-08-28 | 浙江机电职业技术学院 | Buffering formula highway rail guard |
| CN112227187A (en) * | 2020-09-30 | 2021-01-15 | 北京工业大学 | Pier buffer stop is filled to negative poisson's ratio honeycomb of layering gradient |
| CN214245503U (en) * | 2020-12-30 | 2021-09-21 | 东北林业大学 | Rotatory energy-absorbing structure highway safety rail guard |
| CN215976846U (en) * | 2021-10-27 | 2022-03-08 | 烟台市公路事业发展中心 | Anti-collision device for highway bridge |
Non-Patent Citations (2)
| Title |
|---|
| 朱秀芳;张君华;: "负泊松比蜂窝夹层板的振动特性研究" * |
| 罗小丽;王洪亮;周云波;王显会;孙晓旺;罗鸣;: "蜂窝夹层结构对车辆抗***冲击性能的影响" * |
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