A type of road safety crash barrier

Abstract

This application provides a road safety crash barrier, including a barrier body and a telescopic crash barrier. The barrier body is fixed to both sides of the road along its length, and a groove is provided within the barrier body. The telescopic crash barrier is slidably fitted within the groove of the barrier body. The telescopic crash barrier includes a telescopic rod, a first elastic element, and a guide wheel. The end of the telescopic rod is slidably fitted within the groove. The first elastic element is located within the groove, with one end connected to the inner wall of the groove and the other end connected to the telescopic rod. The guide wheel is rotatably mounted on the telescopic rod. The road safety crash barrier provided by this application can reduce damage caused by collisions between vehicles and the barrier, thereby improving the safety of vehicle occupants. Furthermore, because the telescopic crash barrier can elastically extend and retract, the barrier can be reused, eliminating the need for replacement and maintenance after each collision, thus simplifying maintenance.

Description

Technical Field

[0001] This invention relates to the field of traffic facilities, and more particularly to a road safety crash barrier. Background Technology

[0002] Road guardrails are traffic safety facilities installed on the outer side of road shoulders, traffic dividers, and pedestrian curbs. They absorb collision energy through deformation or vehicle climbing, thereby changing the vehicle's direction, preventing it from going off the road or into oncoming lanes, and minimizing injury to occupants. However, traditional guardrails have poor yielding properties. When a car hits a guardrail, although the guardrail can absorb some energy through deformation, the guardrail needs to be replaced or repaired after deformation, and the car still suffers a significant impact, resulting in substantial damage to the vehicle and a continued high safety risk for the occupants. Summary of the Invention

[0003] The purpose of this invention is to provide a road safety crash barrier to solve the technical problem that traditional road barriers have poor yielding properties, resulting in significant impact stress between the barrier and the vehicle when a collision occurs, leading to greater damage to the vehicle and a higher safety risk to the occupants.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is: to provide a road safety crash barrier, the road safety crash barrier comprising:

[0005] The guardrail body is fixed to both sides of the road along the length of the road, and a sliding groove is provided inside the guardrail body;

[0006] The telescopic anti-collision part is slidably fitted within the groove of the guardrail body; the telescopic anti-collision part includes a telescopic rod, a first elastic element, and a guide wheel; the end of the telescopic rod is slidably fitted within the groove; the first elastic element is located within the groove, with one end of the first elastic element connected to the inner wall of the groove and the other end of the first elastic element connected to the telescopic rod; the guide wheel is rotatably mounted on the telescopic rod.

[0007] In one embodiment, the telescopic rod includes a sliding guide rod at one end and a U-shaped anti-collision rod connected to the sliding guide rod, the sliding guide rod being slidably fitted within the groove; and the guide wheels are disposed on both sides of the U-shaped anti-collision rod.

[0008] In one embodiment, the angle between the sliding direction of the chute and the forward direction of the road is 30° to 45°.

[0009] In one embodiment, the road safety crash barrier further includes an elastic water bag, which is located between the telescopic crash barrier and the barrier body, and the elastic water bag is fixed to the barrier body.

[0010] In one embodiment, a cooling channel is provided inside the telescopic rod, the output end of the cooling channel faces the direction between the guide wheel and the middle area of ​​the road, the input end of the cooling channel is connected to the elastic water bag, and a pressure valve is provided at the position where the elastic water bag is connected to the cooling channel.

[0011] In one embodiment, the bottom of the elastic water bag is connected to a water supply pipe via a pipe, and a one-way valve is provided on the pipe connecting the elastic water bag and the water supply pipe. The flow direction of the one-way valve is from the water supply pipe to the elastic water bag.

[0012] In one embodiment, the road safety crash barrier further includes a warning section, which includes a trigger switch and a warning light. The trigger switch is disposed on the main body of the barrier, and the warning light is disposed on the top of the main body of the barrier. The trigger switch is electrically connected to the warning light. When a vehicle hits the telescopic crash barrier, the telescopic crash barrier triggers the trigger switch, and the trigger switch controls the warning lights in a certain area at the impact location to emit a warning.

[0013] In one embodiment, the telescopic rod is made of a high-strength alloy.

[0014] The above-described technical solutions in the embodiments of the present invention have at least the following technical effects or advantages:

[0015] The road safety crash barrier provided in this invention fixes the main body of the barrier to both sides of the road and provides a groove on the main body, into which the telescopic crash barrier is slidably fitted. When a car collides with the barrier, the car first contacts the telescopic bar inside the telescopic crash barrier. Since the telescopic bar is equipped with guide wheels, these guide wheels have a guiding and corrective function. When the car hits the guide wheels, the guide wheels rotate and correct the car's direction of motion, allowing the car to maintain a certain speed and return to the correct path. Compared to traditional barriers that directly stop the car, the road safety crash barrier in this application reduces the impact force between the car and the barrier by correcting the car's direction using guide wheels (changing the original method of stopping the car to guiding and correcting the car's direction), thereby reducing the damage caused by the collision. Furthermore, when a car collides with the telescopic pole, the telescopic pole will overcome the elastic force of the first elastic element and retract into the guardrail body, thereby absorbing part of the impact force of the car. This gives the guardrail good yielding ability, further reducing the damage caused by the collision between the car and the guardrail, and thus improving the safety of the occupants in the car. Moreover, since the telescopic anti-collision part can elastically extend and retract, the guardrail can be reused, eliminating the need for replacement and maintenance after each collision, making maintenance convenient. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of the road safety crash barrier provided in an embodiment of the present invention;

[0018] Figure 2 for Figure 1 A schematic diagram of the structure of a road safety crash barrier after being hit by a car.

[0019] Figure 3 This is a schematic diagram of the structure of the elastic water bag provided in an embodiment of the present invention;

[0020] Figure 4 for Figure 3 A magnified view of a portion of point A in the middle;

[0021] Figure 5 for Figure 3 A magnified view of a portion of point B in the middle.

[0022] The labels for the various figures are as follows:

[0023] 1. Guardrail body; 2. Telescopic anti-collision part; 3. Elastic water bag; 4. Pressure valve; 5. One-way valve; 6. Warning part; 11. Slide groove; 21. Telescopic rod; 22. First elastic element; 23. Guide wheel; 61. Trigger switch; 62. Warning light; 211. Sliding guide rod; 212. U-shaped anti-collision rod; 213. Cooling channel. Detailed Implementation

[0024] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0025] In the description of this invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0027] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0028] Please see Figures 1 to 2This application provides a road safety crash barrier, including a barrier body 1 and a telescopic crash barrier 2. The barrier body 1 is fixed along the length of the road to both sides, and a groove 11 is provided inside the barrier body 1. The telescopic crash barrier 2 is slidably fitted within the groove 11 of the barrier body 1. The telescopic crash barrier 2 includes a telescopic rod 21 (which may be made of a high-strength alloy material), a first elastic element 22, and a guide wheel 23. The end of the telescopic rod 21 is slidably fitted within the groove 11. The first elastic element 22 is located within the groove 11, with one end of the first elastic element 22 connected to the inner wall of the groove 11 and the other end of the first elastic element 22 connected to the telescopic rod 21. The guide wheel 23 is rotatably mounted on the telescopic rod 21.

[0029] The road safety crash barrier provided in this embodiment is constructed by fixing the barrier body 1 to both sides of the road. The barrier body 1 can be made of a long strip of metal. A groove 11 is provided on the barrier body 1, and the telescopic crash barrier 2 is slidably fitted into the groove 11 of the barrier body 1. When a car collides with the barrier, the car will first come into contact with the telescopic bar 21 inside the telescopic crash barrier 2. Since the telescopic bar 21 is provided with a guide wheel 23, the guide wheel 23 has a guiding and correcting function. When the car hits the guide wheel 23, the guide wheel 23 rotates and corrects the direction of the car's movement, so that the car maintains a certain speed and returns to the correct route. Compared with the traditional barrier that directly stops the car, the road safety crash barrier in this application can reduce the impact force between the car and the barrier by correcting the direction of the car through the guide wheel 23 (changing the original method of stopping the car to guiding and correcting the direction of the car), thereby reducing the damage caused by the collision between the car and the barrier. Furthermore, when a car collides with the telescopic pole 21, the telescopic pole 21 will overcome the elastic force of the first elastic element 22 (which may be a spring) and retract towards the guardrail body 1, thereby absorbing part of the impact force of the car. This gives the guardrail good yielding ability, further reducing the damage caused by the collision between the car and the guardrail, thereby improving the safety of the occupants in the car. Moreover, since the telescopic anti-collision part 2 can elastically extend and retract, the guardrail can be reused without having to be replaced or repaired after each collision, making maintenance convenient.

[0030] In addition, a sealed connection can be made between the end of the telescopic rod 21 and the slide groove 11, so that when the car hits the telescopic rod 21, the telescopic rod 21 slides into the slide groove 11 while compressing the air in the slide groove 11, which works together with the first elastic member 22 to buffer and absorb energy, further improving the buffering effect of the telescopic anti-collision part 2 and improving safety.

[0031] In one embodiment, the telescopic rod 21 includes a sliding guide rod 211 at one end and a U-shaped anti-collision rod 212 connecting the sliding guide rod 211. The sliding guide rod 211 is slidably fitted within the groove 11; guide wheels 23 are disposed on both sides of the U-shaped anti-collision rod 212. Figure 1-2 As shown, the U-shaped anti-collision bar 212 is equipped with guide wheels 23 on its side. When a car hits the U-shaped anti-collision bar 212 (the car hits from bottom to top), since the side of the U-shaped anti-collision bar 212 is inclined towards the center of the road, when the car hits the side of the U-shaped anti-collision bar 212, the U-shaped anti-collision bar 212 can also guide and correct the vehicle while the sliding guide bar 211 retracts inward. That is, it guides the vehicle's movement direction to turn towards the center of the road, so that the car can return to the correct road and continue driving with a certain speed, instead of directly stopping the car (the instantaneous impact force on the car when stopping the car is very large, which can easily endanger the lives of the occupants of the car), thus ensuring the safety of the car occupants.

[0032] Furthermore, as the U-shaped anti-collision bar 212 retracts inward along with the sliding guide bar 211 during the process of guiding the car, it can absorb some of the impact kinetic energy of the car and reduce its speed. The retraction energy of the U-shaped anti-collision bar 212 makes its guiding process more gentle, allowing the car to correct its direction of travel by hitting multiple telescopic anti-collision parts 2 in sequence. In other words, multiple U-shaped anti-collision bars 212 can guide and correct the car in sequence, reducing the amount of correction to the car's direction of travel by a single U-shaped anti-collision bar 212. This prevents the car from losing control or even overturning due to excessive correction in a short period of time, thus improving the safety of the guardrail in guiding and correcting the car when it hits the guardrail.

[0033] In one embodiment, the angle between the sliding direction of the chute 11 and the forward direction of the road (e.g., Figure 1 The angle α between the sliding direction of the chute 11 and the forward direction of the road is controlled within the range of 30° to 45°. Figure 1 (From bottom to top)

[0034] When a car impacts the guardrail at a small angle (such as when the car is close to the guardrail), the guardrail can easily correct the car's direction, allowing it to return to the correct driving direction. Therefore, the guardrail primarily serves a guiding and corrective function. At this time, the angle α between the sliding direction of the slide rail 11 and the road's forward direction is controlled within a small range (30°–45°), specifically 30°. This results in a smaller angle between the force of the car impacting the telescopic bar 21 and the sliding direction of the slide rail 11 (less than 45°). Consequently, the telescopic bar 21 retracts more easily, requiring less energy to retract upon impact. This leads to less impact and directional change after a car impacts a single telescopic anti-collision section 2, allowing for smoother directional correction after successive collisions with multiple telescopic anti-collision sections 2, ensuring safety when impacting the guardrail. Furthermore, the guide wheel 23 is rotatably mounted on the telescopic bar 21, reducing friction between the car and the bar, thus minimizing damage from impacts and protecting both the car and the guardrail.

[0035] When a car impacts the guardrail at a large angle (e.g., when the car impacts the guardrail along a direction perpendicular to the guardrail body 1), the guardrail cannot correct the car's direction of travel in this situation. Therefore, the guardrail mainly acts as a buffer and decelerator for the car. At this time, the angle between the force of the car impacting the telescopic bar 21 and the sliding direction of the slide groove 11 is large (greater than 45°). Therefore, the force required to retract the telescopic bar 21 after the car impacts it is greater, and the energy required for the telescopic bar 21 to retract is more. The greater the energy consumed by the car impact to cause it to retract, the better the buffering effect of the telescopic anti-collision part 2.

[0036] In one embodiment, the road safety crash barrier also includes an elastic water bag 3, which is located between the telescopic crash barrier 2 and the barrier body 1, and is fixed to the barrier body 1. The elastic water bag 3 can provide a certain cushioning and shock absorption effect. When a car collides with the telescopic crash barrier 2, the elastic water bag 3 can absorb the impact force through its own deformation, reducing the impact force on the car. Specifically, the elastic water bag 3 can be made of rubber material.

[0037] In one embodiment, a cooling channel 213 is provided inside the telescopic rod 21. The output end of the cooling channel 213 faces the guide wheel 23 and the middle area of ​​the road. The input end of the cooling channel 213 is connected to the elastic water bag 3, and a pressure valve 4 is provided at the connection point between the elastic water bag 3 and the cooling channel 213. When a car hits the telescopic anti-collision part 2, causing the elastic water bag 3 to deform under pressure, the water pressure inside the elastic water bag 3 increases until it exceeds the critical pressure of the pressure valve 4. This causes the water inside the elastic water bag 3 to flow into the cooling channel 213 through the pressure valve 4 and then spray onto the guide wheel 23. This sprays water to cool the guide wheel 23 and the impact point of the car, preventing excessive friction between the guide wheel 23 and the car, which could lead to excessive wear of the guide wheel 23 or the car, or even cause the car surface to catch fire, thus improving the safety of the car when it hits the guardrail.

[0038] In one embodiment, the bottom of the elastic water bag 3 is connected to a water supply pipe via a conduit. A one-way valve 5 is installed on the conduit connecting the elastic water bag 3 and the water supply pipe, with the flow direction of the one-way valve 5 being from the water supply pipe to the elastic water bag 3. When the water in the elastic water bag 3 decreases due to impact and pressure, the water flow in the water supply pipe can replenish the elastic water bag 3 through the one-way valve 5. This allows the elastic water bag 3 to be repeatedly used for cushioning and shock absorption, as well as for spraying water to cool the guide wheel 23 and the impact area of ​​the vehicle. Combined with the automatic rebound recovery function of the telescopic anti-collision part 2, the entire road safety anti-collision guardrail is reusable and requires no manual maintenance.

[0039] In one embodiment, the road safety crash barrier also includes a warning unit 6, which includes a trigger switch 61 and a warning light 62. The trigger switch 61 is disposed on the main body 1 of the barrier, and the warning light 62 is disposed on the top of the main body 1 of the barrier. The trigger switch 61 and the warning light 62 are electrically connected. When a vehicle hits the telescopic crash barrier 2, the telescopic crash barrier 2 triggers the trigger switch 61, which controls the warning lights 62 in a certain area at the impact location to emit a warning. When a car hits the barrier at a certain point on the road, the trigger switch 61 in the barrier at that point is triggered as the telescopic bar 21 retracts, thereby causing the trigger switch 61 to control the activation of other warning lights 62 within a certain range (e.g., 500m) in that area to alert vehicles behind that an accident has occurred on the road ahead, so that vehicles behind have sufficient time to make corresponding preparations (such as increasing vigilance and reducing speed), thus avoiding a rear-end collision between the vehicle behind and the vehicle that hit the barrier.

[0040] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A road safety crash barrier, characterized in that, The road safety crash barrier includes: The guardrail body is fixed to both sides of the road along the length of the road, and a sliding groove is provided inside the guardrail body; A telescopic anti-collision part is slidably fitted within a groove in the main body of the guardrail. The telescopic anti-collision part includes a telescopic rod, a first elastic element, and a guide wheel. The end of the telescopic rod is slidably fitted within the groove. The first elastic element is located within the groove, with one end connected to the inner wall of the groove and the other end connected to the telescopic rod. The guide wheel is rotatably mounted on the telescopic rod. The telescopic rod includes a sliding guide rod at one end and a U-shaped anti-collision rod connected to the sliding guide rod. The sliding guide rod is slidably fitted into the groove. The guide wheels are disposed on both sides of the U-shaped anti-collision rod. The angle between the sliding direction of the chute and the forward direction of the road is 30°~45°; The road safety crash barrier also includes an elastic water bag, which is located between the telescopic crash barrier and the barrier body, and the elastic water bag is fixed to the barrier body. The telescopic rod is provided with a cooling channel. The output end of the cooling channel faces the guide wheel and the middle area of ​​the road. The input end of the cooling channel is connected to the elastic water bag. A pressure valve is provided at the position where the elastic water bag is connected to the cooling channel. The road safety crash barrier also includes a warning section, which includes a trigger switch and a warning light. The trigger switch is located on the main body of the barrier, and the warning light is located on the top of the main body of the barrier. The trigger switch and the warning light are electrically connected. When a vehicle hits the retractable crash barrier, the retractable crash barrier triggers the trigger switch, and the trigger switch controls the warning lights in a certain area at the impact location to emit a warning.

2. The road safety crash barrier according to claim 1, characterized in that: The bottom of the elastic water bag is connected to the water supply pipe via a pipe. A one-way valve is installed on the pipe connecting the elastic water bag and the water supply pipe. The flow direction of the one-way valve is from the water supply pipe to the elastic water bag.

3. The road safety crash barrier according to claim 1, characterized in that: The telescopic rod is made of a high-strength alloy.

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