Piezoresistive low-variable moving guardrail

Abstract

The invention belongs to the technical field of road guardrails, and particularly relates to a piezoresistive low-variable movable guardrail. Comprising a piezoresistive base and a balancing weight connected with the piezoresistive base and used for applying weight pressure to the piezoresistive base, and the balancing weight is provided with a mounting hole allowing an old guardrail stand column to penetrate through so as to be connected with the piezoresistive base. According to the piezoresistive low-variable movable guardrail, the piezoresistive base is kept to be adsorbed to the surface of a road through continuous gravity pressure applied by the balancing weight, and transverse displacement of the guardrail during collision is effectively restrained; the existing stand columns of the waste two-wave beam guardrail are directly used for positioning and mounting by arranging the mounting holes, so that the structural damage of traditional steel nail anchoring to the asphalt pavement is avoided, the maintenance cost is reduced, the cyclic utilization of waste materials is further realized, and the resource waste is greatly reduced.

Description

Technical field

[0001] This application is achieved through the following technical solutions: A piezoresistive low-variable mobile guardrail comprises a piezoresistive base, a counterweight block connected to the piezoresistive base and used to apply weight pressure to the piezoresistive base, and a mounting hole for an old guardrail column to pass through to connect to the piezoresistive base.

[0002] As described above, a piezoresistive low-variable mobile guardrail, the piezoresistive base includes a base body, and a flexible sealing pad arranged along the outer contour of the bottom of the base body, the counterweight block squeezes the piezoresistive base and presses down the flexible sealing pad to form a negative pressure difference between the inner and outer sides of the piezoresistive base.

[0003] In the piezoresistive low-variable movable guardrail as described above, the piezoresistive base is provided with an air nozzle that communicates with the interior of the piezoresistive base and is used for vacuuming.

[0004] As described above, a piezoresistive low-variable movable guardrail is provided with an elastic ejector device at the bottom of the piezoresistive base. The elastic ejector device includes an elastic member, a mounting groove for the elastic member, and an ejector abutting against the elastic member. The elastic member drives the ejector pin to extend out from under the piezoresistive base.

[0005] In the piezoresistive low-variable movable guardrail as described above, the piezoresistive base is provided with a first inclined surface and a second inclined surface which gradually extend outward in opposite directions from top to bottom along the width direction of the counterweight block.

[0006] As described above, a piezoresistive low-variable mobile guardrail has a first joint and a second joint at both ends of the counterweight block, the first joint and the second joint are staggered in the vertical direction, the first joint is provided with a first positioning hole for the connecting pin to pass through, and the second joint is provided with a second positioning hole for the connecting pin to pass through.

[0007] The piezoresistive low-variable mobile guardrail as described above also includes a connecting piece for connecting two adjacent old guardrails, wherein the old guardrail is provided with a first connecting hole, and the connecting piece is provided with a second connecting hole and a third connecting hole respectively corresponding to the first connecting hole on the two adjacent old guardrails, and a fastener passes through the first connecting hole and the second connecting hole to fix the connecting piece to the old guardrail, and a fastener passes through the first connecting hole and the third connecting hole to fix the connecting piece to the other old guardrail.

[0008] As described above, in the piezoresistive low-variable movable guardrail, the connecting member is further provided with a third positioning hole for the connecting pin to pass through, and the first positioning hole, the second positioning hole and the third positioning hole overlap and correspond to each other in the vertical direction.

[0009] In the piezoresistive low-variable movable guardrail as described above, at least two piezoresistive bases are connected to the counterweight block.

[0010] As described above, in the piezoresistive low-variable movable guardrail, four elastic ejector pin devices are provided at the bottom of the base body, and each elastic ejector pin device is respectively provided at an inner corner area where adjacent two side edges of the base body meet.

[0011] Compared with the prior art, this application has the following advantages: The present application discloses a piezoresistive low-variable mobile guardrail, which maintains the piezoresistive base adsorbed on the road surface through the continuous gravity pressure exerted by the counterweight, effectively suppressing the lateral displacement of the guardrail during a collision; and by setting mounting holes, the existing columns of the discarded two-corrugated beam guardrail are directly used for positioning and installation, avoiding the structural damage of the asphalt pavement caused by traditional steel nail anchoring, reducing maintenance costs, and realizing the recycling of waste materials, thereby significantly reducing resource waste.

Brief Description of the Drawings

[0012] Figure 1 It is a three-dimensional solid in the embodiment of this application Figure 1 ; Figure 2 yes Figure 1 A partial exploded view of Figure 3 It is a three-dimensional solid in the embodiment of this application Figure 2 ; Figure 4 is a three-dimensional stereogram of the piezoresistive base in an embodiment of the present application; Figure 5 yes Figure 1 A top view of Figure 6 This is a schematic diagram of the splicing and installation of two guardrails in an embodiment of the present application. [Specific implementation method] In order to make the technical problems, technical solutions and beneficial effects solved by this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0013] See also Figures 1 to 6 A piezoresistive low-variable mobile guardrail includes a piezoresistive base 1, a counterweight block 2 connected to the piezoresistive base 1 and used to apply weight pressure to the piezoresistive base 1, and a mounting hole 4 for an old guardrail column 3 to pass through to connect to the piezoresistive base 1.

[0014] The present application discloses a piezoresistive low-variable mobile guardrail, which maintains the piezoresistive base adsorbed on the road surface through the continuous gravity pressure exerted by the counterweight, effectively suppressing the lateral displacement of the guardrail during a collision; and by setting mounting holes, the existing columns of the discarded two-corrugated beam guardrail are directly used for positioning and installation, avoiding the structural damage of the asphalt pavement caused by traditional steel nail anchoring, reducing maintenance costs, and realizing the recycling of waste materials, thereby significantly reducing resource waste.

[0015] Furthermore, as a preferred embodiment of the present invention but not a limitation, the piezoresistive base 1 includes a base body 11 and a flexible sealing pad 12 arranged along the outer contour of the bottom of the base body 11. The counterweight block 2 squeezes the piezoresistive base 1 and presses down the flexible sealing pad 12 to form a negative pressure difference between the inner and outer sides of the core of the piezoresistive base 1.

[0016] In this embodiment, continuous pressure is applied to the piezoresistive base 1 by the counterweight 2, so that the flexible sealing pad 12 at the bottom of the base body 11 is tightly fitted to the road surface to form a sealed space, and atmospheric pressure is used to achieve stable adsorption without anchoring. At the same time, the flexible sealing pad 12 can not only enhance the friction resistance with the road surface during a collision, but also serve as a buffer layer to absorb impact energy. The dual effects significantly reduce the lateral displacement of the guardrail, which is measured to be less than 0.5 meters; negative pressure adsorption provides basic fixing force, the gravity pressurization of the counterweight 2 enhances the sealing, and the elastic deformation of the flexible sealing pad 12 not only compensates for the unevenness of the road surface to ensure airtightness, but also reduces the collision impact through deformation energy dissipation. The three work together to achieve dynamic and stable protection. The flexible sealing pad 12 can be made of rubber, such as nitrile rubber, chloroprene rubber or silicone rubber, polyurethane elastomer or thermoplastic elastomer (TPE / TPU) and other materials.

[0017] Furthermore, as a preferred embodiment of the present invention but not limiting, the piezoresistive base 1 is provided with an air nozzle 13 which is in communication with the interior of the piezoresistive base 1 and is used for vacuuming.

[0018] In this embodiment, by arranging an air nozzle 13 on the piezoresistive base 1, a rapid vacuum operation of the internal space of the base is achieved, so that a stable negative pressure difference is formed inside and outside the base, and the atmospheric pressure is used to generate a strong adsorption and fixing force, thereby avoiding the damage to the road surface caused by traditional anchoring methods. After the construction is completed, the vacuum can be quickly released through the air nozzle 13 to achieve convenient disassembly; the air nozzle 13 is connected to the external exhaust equipment as a vacuum channel. After vacuuming, a negative pressure environment of 0.05-0.08MPa is formed inside the base. Combined with the sealing effect of the flexible sealing pad 12, an adsorption force of about 500-800kg per square meter can be generated, and the force is evenly distributed on the entire contact surface of the base, ensuring that the guardrail remains stable as a whole when subjected to a lateral impact.

[0019] Furthermore, as a preferred embodiment of the present invention but not a limitation, an elastic ejector pin device 14 is provided at the bottom of the piezoresistive base 1. The elastic ejector pin device 14 includes an elastic member 141, a mounting groove 142 for the elastic member 141, and an ejector pin 143 abutting against the elastic member 141. The elastic member 141 drives the ejector pin 143 to extend out from under the piezoresistive base 1.

[0020] In this embodiment, an elastic ejector pin device enhances the contact stability between the piezoresistive base and the ground. Especially on uneven surfaces, the ejector pin can be embedded in tiny depressions or gaps in the ground, further increasing friction between the base and the ground. This effectively prevents the piezoresistive base from sliding or shifting when subjected to external forces, significantly improving the stability and collision resistance of the guardrail. The elastic potential energy of elastic member 141 is used to propel ejector pin 143 out. Upon contact with the ground, the ejector pin's tip increases the contact point pressure with the ground, thereby enhancing friction and stability. Elastic member 141 is a spring.

[0021] Furthermore, as a preferred embodiment of the present invention but not a limitation, the piezoresistive base 1 is provided with a first inclined surface 5 and a second inclined surface 6 which gradually extend outward in opposite directions from top to bottom along the width direction of the counterweight 2 .

[0022] In this embodiment, a triangular structure can be formed. The stability principle of the triangle significantly enhances the overall stability of the piezoresistive base when subjected to external forces. The triangular structure has a natural stability that can effectively disperse and offset impact forces from different directions, thereby reducing the possibility of the piezoresistive base tipping or shifting under collisions or lateral forces, further improving the safety and reliability of the guardrail. External forces are dispersed to various parts of the piezoresistive base, and the weight of the counterweight further enhances the contact stability between the base and the ground, ensuring that the guardrail can maintain stability in complex traffic environments.

[0023] Furthermore, as a preferred embodiment of the present invention but not a limitation, a first joint 7 and a second joint 8 are respectively provided at both ends of the counterweight block 2, and the first joint 7 and the second joint 8 are staggered in the vertical direction. The first joint 7 is provided with a first positioning hole 10 for the connecting pin 9 to pass through, and the second joint 8 is provided with a second positioning hole 101 for the connecting pin 9 to pass through.

[0024] In this embodiment, through the staggered joints and positioning holes, reliable connection and coordinated force can be achieved between multiple counterweights, thereby enhancing the integrity and stability of the entire guardrail system. The shear resistance of the metal pin rod (the shear strength of the 45 steel pin rod is ≥300MPa) can effectively disperse the impact energy. Actual measurements show that this structure can reduce the displacement at the joint by more than 60%.

[0025] Furthermore, as a preferred embodiment of the present invention but not a limitation, it also includes a connecting piece 16 for connecting two adjacent old guardrails 15, wherein the old guardrail 15 is provided with a first connecting hole 17, and the connecting piece 16 is provided with a second connecting hole 18 and a third connecting hole 181 respectively corresponding to the first connecting hole 17 on the two adjacent old guardrails 15, and a fastener passes through the first connecting hole 17 and the second connecting hole 18 to fix the connecting piece 16 to the old guardrail 15, and a fastener passes through the first connecting hole 17 and the third connecting hole 181 to fix the connecting piece 16 to the other old guardrail 15.

[0026] In this embodiment, a reliable connection structure enhances the overall guardrail's stability and protective performance, preventing loosening at the joints that could cause deformation or excessive displacement of the guardrail. This not only improves the overall device's tensile and shear resistance, but also ensures coordinated force distribution between the guardrails 15 through multi-point fixation, effectively suppressing overall guardrail deformation during a collision. This solves the problem of loosening and deformation that can occur with traditional connection methods during collisions.

[0027] Furthermore, as a preferred embodiment of the present invention but not a limitation, the connecting member 16 is also provided with a third positioning hole 102 for the connecting pin 9 to pass through, and the first positioning hole 10, the second positioning hole 101 and the third positioning hole 102 overlap and correspond in the vertical direction.

[0028] In this embodiment, multi-point fixation enhances the reliability and stability of the overall connection, preventing loosening at the connection points that could cause deformation or excessive displacement of the guardrail. The design of connecting pins 9 passing through multiple positioning holes not only improves the overall tensile and shear resistance of the entire device, but also ensures coordinated force between the guardrails 15 through multi-point fixation, thereby more effectively suppressing overall deformation of the guardrail during a collision.

[0029] Furthermore, as a preferred implementation manner of this solution but not limitation, at least two piezoresistive bases 1 are connected to the counterweight block 2 .

[0030] In this embodiment, the synergistic effect of multiple piezoresistive bases significantly enhances the stability and load-bearing capacity of the entire guardrail system. Multiple piezoresistive bases can disperse the force, so that when the guardrail is impacted by external forces, it can more evenly transfer the force to the ground, thereby reducing the risk of structural deformation or damage caused by excessive local force. The weight of the counterweight is evenly applied to multiple piezoresistive bases. Each piezoresistive base is tightly combined with the ground through its own negative pressure adsorption and elastic ejector device to form a stable support structure. This multi-point support method not only improves the overall stability of the guardrail, but also enhances its adaptability in complex road conditions and harsh environments.

[0031] Furthermore, as a preferred embodiment of the present invention but not limitation, four elastic ejector pin devices 14 are provided at the bottom of the base body 11 , and each elastic ejector pin device 14 is provided at an inner corner area where adjacent two sides of the base body 11 meet.

[0032] In this embodiment, the contact stability between the piezoresistive base 1 and the ground can be evenly enhanced from multiple directions. By providing elastic ejector pins in the four inner corners, the piezoresistive base can be ensured to disperse and offset the impact force regardless of the direction of the impact through the close contact between the ejector pins and the ground, thereby effectively preventing the base from shifting or tipping over and significantly improving the overall stability of the guardrail.

[0033] The working principle of this embodiment is as follows: The present application discloses a piezoresistive low-variable mobile guardrail, which maintains the piezoresistive base adsorbed on the road surface through the continuous gravity pressure exerted by the counterweight, effectively suppressing the lateral displacement of the guardrail during a collision; and by setting mounting holes, the existing columns of the discarded two-corrugated beam guardrail are directly used for positioning and installation, avoiding the structural damage of the asphalt pavement caused by traditional steel nail anchoring, reducing maintenance costs, and realizing the recycling of waste materials, thereby significantly reducing resource waste.

[0034] The above are implementation methods provided in conjunction with specific content, and the specific implementation of this application is not limited to these descriptions. Any method structure that is similar to the method structure of this application, or any technical deduction or replacement based on the concept of this application, should be considered as the scope of protection of this application.

Claims

1. A piezoresistive low-variable movable guardrail, characterized in that: The invention comprises a piezoresistive base (1), a counterweight (2) connected to the piezoresistive base (1) and used to apply weight pressure to the piezoresistive base (1), and a mounting hole (4) for an old guardrail post (3) to pass through for connection to the piezoresistive base (1) is provided on the counterweight (2).

2. The piezoresistive low-variable movable guardrail according to claim 1, characterized in that: The piezoresistive base (1) comprises a base body (11) and a flexible sealing pad (12) arranged along the outer contour of the bottom of the base body (11); the counterweight (2) presses the piezoresistive base (1) to press down the flexible sealing pad (12) to form a negative pressure difference between the inner core and the outer core of the piezoresistive base (1).

3. The piezoresistive low-variable movable guardrail according to claim 2, characterized in that: The piezoresistive base (1) is provided with an air nozzle (13) that is in communication with the interior of the piezoresistive base (1) and is used for vacuuming.

4. The piezoresistive low-variable movable guardrail according to claim 2, characterized in that: An elastic ejector pin device (14) is provided at the bottom of the piezoresistive base (1), and the elastic ejector pin device (14) comprises an elastic member (141), a mounting groove (142) for the elastic member (141), and an ejector pin (143) abutting against the elastic member (141), wherein the elastic member (141) drives the ejector pin (143) to extend out from under the piezoresistive base (1).

5. The piezoresistive low-variable movable guardrail according to claim 1, characterized in that: The piezoresistive base (1) is provided with a first inclined surface (5) and a second inclined surface (6) which gradually extend outward in opposite directions from top to bottom along the width direction of the counterweight block (2).

6. The piezoresistive low-variable movable guardrail according to claim 1, characterized in that: The counterweight (2) is provided with a first joint (7) and a second joint (8) at both ends, respectively. The first joint (7) and the second joint (8) are staggered in the vertical direction. The first joint (7) is provided with a first positioning hole (10) for the connecting pin (9) to pass through, and the second joint (8) is provided with a second positioning hole (101) for the connecting pin (9) to pass through.

7. The piezoresistive low-variable movable guardrail according to claim 6, characterized in that: The invention also includes a connecting member (16) for connecting two adjacent old guardrails (15), wherein the old guardrail (15) is provided with a first connecting hole (17), and the connecting member (16) is provided with a second connecting hole (18) and a third connecting hole (181) respectively corresponding to the first connecting hole (17) on the two adjacent old guardrails (15). A fastener passes through the first connecting hole (17) and the second connecting hole (18) to fix the connecting member (16) to the old guardrail (15), and a fastener passes through the first connecting hole (17) and the third connecting hole (181) to fix the connecting member (16) to another old guardrail (15).

8. The piezoresistive low-variable movable guardrail according to claim 7, characterized in that: The connecting member (16) is further provided with a third positioning hole (102) for the connecting pin (9) to pass through, and the first positioning hole (10), the second positioning hole (101) and the third positioning hole (102) are overlapped and correspond to each other in the vertical direction.

9. The piezoresistive low-variable movable guardrail according to claim 1, characterized in that: At least two of the piezoresistive bases (1) are connected to the counterweight block (2).

10. The piezoresistive low-variable movable guardrail according to claim 4, characterized in that: Four elastic ejector pin devices (14) are provided at the bottom of the base body (11), and each elastic ejector pin device (14) is respectively provided at an inner corner area where adjacent two side edges of the base body (11) meet.

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