Roller device for traffic isolation guardrail and guardrail

Abstract

The invention relates to the technical field of guardrails, and particularly discloses a roller device for a traffic isolation guardrail and the guardrails, the roller device comprises a base detachably and fixedly connected to a base, a supporting shaft is fixedly connected to the base, mounting parts are arranged at the two ends of the supporting shaft, and a roller is rotationally mounted in the middle of the supporting shaft and located between the mounting parts; the base is defined as a structure installed on the surface of a road and used for fixing the roller device, the base comprises a bottom plate making contact with or fixed to the surface of the road and a protruding edge fixedly arranged on the bottom plate and used for being fixedly connected with the base in a clamped mode, and the base is provided with an open groove for containing the protruding edge. The roller device and the guardrail are reasonable in structural design, can be widely applied to different grades of road scenes such as urban roads, expressways and rural roads, are suitable for central isolation belts and can also be used for isolating edges on the two sides of the roads, meanwhile, can adapt to different road conditions such as straight roads and curved roads, and have extremely high practicability and popularization value.

Description

Technical Field

[0001] This invention relates to the field of traffic barrier technology, and more particularly to a modular roller guardrail, specifically a roller device and guardrail for traffic isolation barriers. Background Technology

[0002] As an important component of road infrastructure, traffic barriers have the core function of physically separating traffic and pedestrian flows from different directions to ensure traffic order and safety. At the same time, they need to have a certain amount of collision buffering capacity in the event of a traffic accident to reduce casualties and property damage.

[0003] Currently, the mainstream traffic barriers on the market are mainly divided into two categories: one is precast concrete barriers, which have strong impact resistance and stability due to their heavy weight, effectively preventing vehicles from crossing the line. However, this type of barrier has significant drawbacks. On the one hand, precast concrete components are heavy and bulky, requiring high-quality transportation equipment and incurring high transportation costs. Furthermore, large hoisting equipment is needed for construction and installation, making the construction process complex, inflexible, and difficult to adapt to the rapid paving needs of different road scenarios. On the other hand, concrete has high hardness and extremely poor toughness, and it has almost no buffering or force-dissipating function when subjected to vehicle collisions. The impact force is directly transmitted to the vehicle and its occupants, easily leading to serious vehicle damage. At the same time, occupants face a huge risk of impact injury, and the concrete barriers are easily broken after a collision, making repair difficult and costly.

[0004] Another type is the steel pipe guardrail, which is made of spliced ​​metal pipes. It is relatively lightweight and easier to transport and install than concrete barriers. However, the safety hazards of steel pipe guardrails are also prominent: steel pipes are rigid members, and their deformation during a collision is limited, resulting in poor cushioning. In addition, the ends of the steel pipes are sharp, and in high-speed collision scenarios, they can easily penetrate the vehicle body, causing fatal penetrating injuries to drivers and passengers. Furthermore, the steel pipes may break and scatter during a collision, and the resulting debris can cause secondary injuries to other vehicles and pedestrians in the vicinity, expanding the scope of the accident.

[0005] Meanwhile, both existing types of guardrails suffer from limited functionality, only providing basic isolation and collision protection, failing to meet the expanded needs of modern transportation for guardrails in areas such as traffic guidance, information collection, and risk warning. Furthermore, maintenance of both types of guardrails is complex after damage; concrete barriers require complete replacement, while steel pipe guardrails require cutting and welding repairs, resulting in low maintenance efficiency, high costs, and difficulty in achieving rapid repairs to restore road traffic capacity.

[0006] Based on the shortcomings of the existing technology, there is an urgent need for a traffic barrier and its core components that combine convenient transportation, flexible construction, collision buffer safety, low operation and maintenance costs, and the ability to expand functions to meet the needs of modern transportation. Summary of the Invention

[0007] To address the shortcomings of existing precast concrete median barriers, such as low transportation and construction flexibility and poor impact buffering effect; and the vulnerability of existing steel pipe guardrails to penetrating injuries in traffic accidents, endangering the safety of vehicle occupants, this application provides a combined central guardrail that solves at least one of the following technical problems: 1. Address the issues of existing precast concrete guardrails being heavy, difficult to transport, and having poor impact relief and cushioning effects in the event of a vehicle collision; 2. Address the issues of existing steel pipe barriers easily causing penetrating injuries to vehicles and occupants in traffic accidents, while also allowing impact fragments to injure other vehicles and road users; 3. Improve the ease of operation and maintenance and low-cost upkeep of central guardrails after damage; 4. Address the issue of how to expand the functions of guardrails, such as traffic guidance and information display, while ensuring their core functions of isolation and collision prevention, thereby enhancing their practicality and adaptability.

[0008] To achieve the above objectives, the technical solution adopted in this application is as follows: A roller device for traffic safety barriers includes a base detachably and fixedly connected to a base. A support shaft is fixedly connected to the base, and mounting portions are provided at both ends of the support shaft. A roller is rotatably mounted on the middle of the support shaft between the mounting portions. The base is defined as a structure installed on the road surface for fixing the roller device, including a bottom plate that contacts or is fixed to the road surface, and a protruding rib fixedly provided on the bottom plate for fixed engagement with the base. The base has an opening groove for receiving the protruding rib. The detachable fixed connection between the base and the base can be a conventional fastener detachable connection, a fastenerless snap-fit ​​connection, or a combination of snap-fit ​​and fastener connection, thus balancing ease of assembly and disassembly with structural stability after installation.

[0009] To facilitate the installation and disassembly of the roller assembly and improve the convenience of subsequent maintenance, preferably, the top of the protruding rib extends to both sides to form a snap-fit ​​portion. The base includes a horizontal top plate and a vertical snap-fit ​​plate fixedly connected. The vertical snap-fit ​​plate is provided with the opening slot, and both sides of the opening slot are provided with first grooves for accommodating the snap-fit ​​portion. During installation, the vertical snap-fit ​​plate of the roller assembly is tilted to facilitate the smooth insertion of the protruding rib into the opening slot, so that the protruding rib and the first groove form a snap-fit, thereby completing the installation of a single roller assembly. Then, other adjacent roller assemblies are installed in the same way, and adjacent roller assemblies are connected and fixed together by structural components to form the main body of the guardrail.

[0010] To further enhance the stability and overall integrity of the roller assembly and base, as well as improve stability along the length of the base and overcome the problem of insufficient anti-tilting ability of the roller assembly along the length of the base, preferably, a second groove and a third groove for installing adjusting blocks are respectively provided on the upper and lower parts of the first groove along the vertical direction of the opening slot. By engaging the adjusting blocks in the second and third grooves, when the roller assembly is subjected to external force along the length of the base, the contact area between the protrusion and the adjusting block is larger, significantly amplifying the support force on the vertical clamping plate using the lever principle, thereby improving the anti-tilting stability of the assembly; at the same time, the adjusting blocks can effectively eliminate the engagement gap between the base and the base, improving the overall structural stability. To ensure flexible disassembly and installation between the roller assembly and the base, a clearance fit is used between the opening slot and the protrusion on the vertical clamping plate, and a clearance fit is also used between the engagement parts at both ends of the protrusion and the first groove. The biggest advantage of the clearance fit method is that it is easy to disassemble and assemble, and has extremely high disassembly and assembly flexibility. However, this method also has drawbacks, namely, the gap will cause insufficient stability. In order to balance stability and installation flexibility, this application creatively designed an adjustment block to eliminate the gap, so that without the need for fastener connection, modular snap-fit ​​can simultaneously meet the requirements of structural stability and disassembly and assembly flexibility.

[0011] To further enhance the stability and structural integrity between the roller assembly and the base, preferably, an upper support and a lower support are fixedly connected to the upper and lower ends of the vertical clamping plate, respectively. These upper and lower support parts abut against the adjusting block to limit the tilting of the vertical clamping plate. Because the upper and lower support parts are fixed or integrally connected to the vertical clamping plate, the resistance lever at the force-bearing points along the length of the base is significantly increased under the lever principle, thus significantly enhancing the anti-tilting capability.

[0012] To further enhance the stability of the connection between the base and the pedestal, the present invention also provides another base structure. Preferably, the opening groove is located at the upper and lower ends of the receiving end of the snap-fit ​​portion, which are bent to one or both sides to form an upper support portion and a lower support portion for abutting the upper and lower surfaces of the protruding ridge.

[0013] To further enhance the stability of the connection between the base and the pedestal, preferably, the bottom ends of the vertical clamping plate are bent to one or both sides to form bent lugs that can be detachably connected or snapped onto the pedestal. Multiple bent lugs are provided to increase the stability of the base by offering more connection points.

[0014] The present invention also provides a guardrail, including a base that is placed or detachably fixedly installed on the road surface. A plurality of roller devices for traffic isolation guardrails as described above are installed on the base. Adjacent roller devices are detachably fixedly connected to each other by a connecting plate. The two ends of the connecting plate are detachably connected to the mounting parts of two adjacent support shafts, respectively.

[0015] Preferably, a column for improving impact resistance is provided between two adjacent roller devices, and the column is connected to the roller devices at adjacent ends by a connecting plate; the bottom of the column is snapped into or detachably fixed to the base.

[0016] The present invention also provides another type of guardrail, including a first guardrail and a second guardrail. The first guardrail is installed at both ends of the second guardrail. The first guardrail includes a base that is placed or detachably fixedly installed on the road surface. Multiple roller devices as described above for traffic isolation guardrails are installed on the base. Adjacent roller devices are detachably fixedly connected to each other by a connecting plate. The two ends of the connecting plate are detachably connected to the mounting parts of two adjacent support shafts, respectively. The second guardrail includes a basestone that is placed or detachably fixedly installed on the road surface. Multiple interconnected guardrail units are detachably fixedly installed on the basestone. The guardrail units are of the grid type, baffle type, mesh type, or any of the roller devices described above.

[0017] Preferably, a bollard for collecting and / or indicating traffic information is further provided between the first guardrail and the second guardrail. At least one side of the bollard is provided with a first indicator unit and / or a second indicator unit, as well as an information collection unit provided on the top of the bollard. The information collection unit includes a camera unit, a photo unit, a speed measuring unit, and an audible and visual alarm unit. Beneficial effects

[0018] 1. The roller device of this invention adopts a modular disassembly design, and components such as the base, support shaft, and roller can be transported separately. Compared with precast concrete isolation strips, it is smaller in size and lighter in weight, eliminating the need for large transportation and hoisting equipment, thus reducing transportation costs and construction thresholds. The base and the base adopt a snap-fit ​​or detachable fixed connection method, which eliminates the need for complicated operations during installation. A single person can quickly assemble a single roller device. Adjacent roller devices are detachably connected through connecting plates, which provides high construction flexibility and can adapt to the paving requirements of different road lengths and widths, greatly improving construction efficiency.

[0019] 2. The core component of the roller device of this invention, the roller, can rotate freely around the support shaft. When a vehicle collides with the guardrail, the roller converts the impact kinetic energy of the vehicle into its own rotational kinetic energy through rotation, effectively buffering and dissipating the impact force, significantly reducing the damage to the vehicle and its occupants. At the same time, the roller has a cylindrical structure without sharp ends, avoiding the risk of penetrating injuries. Furthermore, the rotation process can guide the vehicle to slide along the guardrail direction, reducing the degree of loss of vehicle control and lowering the probability of secondary collisions. Compared with traditional concrete barriers and steel pipe guardrails, the safety protection performance is greatly improved.

[0020] 3. This invention achieves initial fixation of the base and the pedestal by setting a first groove in the opening slot of the base and engaging with the protruding ridge. Then, the adjusting blocks in the second and third grooves eliminate the interlocking gap. Combined with the limiting effect of the upper support, lower support and bent lugs, it ensures the stability of the connection between the roller device and the base in the absence of fasteners or with a small number of fasteners, effectively resists the tilting force along the length of the base, and improves the overall structural strength of the guardrail. When damaged, individual roller devices, connecting plates or columns can be disassembled and replaced separately without the need to dismantle the entire guardrail, reducing maintenance costs and workload, and achieving low-cost and rapid repair.

[0021] 4. The combined guardrail provided by this invention can be adapted to the isolation needs of different road scenarios by combining the first guardrail and the second guardrail. The guardrail units of the second guardrail can be flexibly selected as grid type, baffle type, mesh type or roller device, which improves the adaptability of the guardrail. By setting isolation piles between the first guardrail and the second guardrail, and integrating the indicator unit and information collection unit, functions such as traffic indication, vehicle speed measurement, violation photography, and sound and light alarm are realized, so that the guardrail is upgraded from a simple isolation component to a modern traffic information interaction terminal, which meets the development needs of intelligent transportation.

[0022] 5. The roller device and guardrail structure of the present invention are reasonably designed and can be widely used in different road scenarios such as urban roads, highways, and rural roads. It is suitable for both central medians and roadside edge isolation, and can adapt to different road conditions such as straight roads and curved roads. It has strong practicality and promotional value. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, 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 this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is the main structural view of the roller assembly.

[0025] Figure 2 yes Figure 1 A sectional view with the section symbol AA along the center line.

[0026] Figure 3 This is an isometric view of one embodiment of the base.

[0027] Figure 4 This is an isometric view of another embodiment of the base.

[0028] Figure 5 This is a structural diagram showing the connection state of two adjacent roller devices (the column and the base are not connected).

[0029] Figure 6 yes Figure 5 Axonometric drawing.

[0030] Figure 7 yes Figure 5 Another embodiment of the structure isometric view (column and base are fixedly connected).

[0031] Figure 8 This is an isometric drawing of the guardrail structure formed by combining only roller devices according to the present invention.

[0032] Figure 9 This is a schematic diagram of a guardrail embodiment formed by combining the roller device provided by the present invention.

[0033] In the diagram: 1-Roller device; 11-Support shaft; 12-Retaining ring; 13-Roller; 14-Base; 141-Horizontal top plate; 142-Vertical clamping plate; 143-Bent ear piece; 144-Opening slot; 1441-First groove; 1442-Second groove; 1443-Third groove; 145-Lower support part; 146-Upper support part; 2-Connecting plate; 3-Column; 4-Base; 41-Bottom plate; 42-Protruding ridge; 5-Adjusting block; 6-Foundation stone body; 7-Isolation pile; 71-First indicating unit; 72-Second indicating unit; 73-Information acquisition unit. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0035] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0036] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0037] In the description of this application, it should be noted that the use of terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" to indicate orientation or positional relationships is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationships commonly used when the product is in use. These terms are used solely for the convenience of describing this application and for 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 application. Furthermore, the use of terms such as "first" and "second" in the description of this application is only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0038] Furthermore, the use of terms such as "horizontal" and "vertical" in the description of this application does not imply that the component is required to be absolutely horizontal or suspended, but rather that it may be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but rather that it may be slightly tilted.

[0039] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. Example

[0040] This embodiment provides a roller device for traffic isolation barriers, the structure of which is described below. Figures 1-2 , Figures 5-6As shown, the device includes a base 14 and a base 4, with the base 14 detachably and fixedly connected to the base 4. A support shaft 11 is fixedly connected to the base 14, with mounting portions at both ends of the support shaft 11. A roller 13 is rotatably mounted on the middle of the support shaft 11, located between the two mounting portions. The base 4 is a structure installed on the road surface and used to fix the roller device 1. The base 4 includes a bottom plate 41 and a protruding rib 42. The bottom plate 41 is in contact with or fixed to the road surface, and the protruding rib 42 is fixedly disposed on the bottom plate 41 for fixed engagement with the base 14. An opening groove 144 is provided on the base 14 to accommodate the protruding rib 42.

[0041] The detachable fixed connection between the base 4 and the base 14 can be a conventional fastener detachable connection, or a fastener-free snap-fit ​​connection, or a combination of snap-fit ​​and fastener connection, to balance the convenience of disassembly and assembly and the structural stability after installation.

[0042] Structure and working principle: During installation, first fix the base plate 41 of the base 4 to the preset position on the road surface. The base plate 41 can be fixed to the road surface with fasteners such as expansion bolts to ensure that the base 4 is installed firmly. Then, align the opening groove 144 of the base 14 with the protrusion 42 of the base 4, so that the protrusion 42 is embedded in the opening groove 144. Depending on the actual structural settings of the opening groove 144 and the protrusion 42, a side-sliding installation or a direct snap-fit ​​installation can be adopted. Finally, the initial positioning and fixing of the base 14 and the base 4 are completed. If fasteners are used for connection, the base 14 and the base 4 can be further locked with bolts and other components.

[0043] The roller 13 is rotatably mounted at the center of the support shaft 11, with mounting portions at both ends of the support shaft 11 for subsequent connection to adjacent components. When a vehicle accidentally collides with the roller device 1, the vehicle contacts the surface of the roller 13. Since the roller 13 can rotate freely around the support shaft 11, the horizontal impact force generated by the collision drives the roller 13 to rotate, converting the vehicle's kinetic energy into the rotational kinetic energy of the roller 13. This buffers and dissipates the impact force, preventing it from directly acting on the vehicle and occupants, thus reducing the degree of injury. Simultaneously, the cylindrical structure of the roller 13 guides the vehicle to slide along the guardrail, reducing the risk of vehicle rebound or loss of control.

[0044] The advantages of this embodiment are: simple structure, high degree of modularity, easy transportation and construction; the rotating design of the roller realizes the anti-collision buffer function, which solves the problems of poor buffer effect of existing concrete isolation belts and easy penetration injury caused by steel pipe guardrails; the detachable connection between the base and the pedestal provides convenience for later maintenance and reduces maintenance costs. Example

[0045] This embodiment is one of the preferred embodiments of the present invention, specifically providing a roller device for traffic isolation barriers, which is further optimized based on Embodiment 1. See attached drawing. Figures 1-3 , Figures 5-6 As shown, it specifically includes: The base 14 is detachably and fixedly connected to the base 4. A support shaft 11 is fixedly connected to the base 14. Both ends of the support shaft 11 are provided with mounting parts. A roller 13 is rotatably mounted on the middle of the support shaft 11 between the two mounting parts. The base 4 includes a base plate 41 that contacts or is fixed to the road surface, and a protruding rib 42 fixedly provided on the base plate 41. The top of the protruding rib 42 extends to both sides to form a snap-fit ​​part. The base 14 includes a horizontal top plate 141 and a vertical snap-fit ​​plate 142 fixedly connected. The vertical snap-fit ​​plate 142 has an opening slot 144 for accommodating the protruding rib 42. The opening slot 144 has a first groove 1441 for accommodating the snap-fit ​​part on both sides along the vertical direction.

[0046] Along the vertical direction, the opening slot 144 has a second groove 1442 and a third groove 1443 located above and below the first groove 1441, respectively, for mounting the adjusting block 5. The upper and lower ends of the vertical clamping plate 142 are fixedly connected to an upper support part 146 and a lower support part 145, respectively. The upper support part 146 and the lower support part 145 abut against the adjusting block 5 to limit the tilt of the vertical clamping plate 142.

[0047] During installation, first, the base plate 41 of the base 4 is fixed to the road surface, ensuring that the protruding rib 42 remains vertical. Then, the vertical clamping plate 142 of the roller device 1 is tilted to one side, allowing the engaging part of the protruding rib 42 to smoothly enter the opening groove 144. The vertical clamping plate 142 is then reset, allowing the engaging part of the protruding rib 42 to embed into the first groove 1441, achieving initial engagement and fixation between the base 14 and the base 4. Next, the adjusting blocks 5 are respectively embedded into the second groove 1442 and the third groove 1443. The adjusting blocks 5 are tightly fitted to the surface of the protruding rib 42, while the upper support part 146 and the lower support part 145 abut against the upper and lower end faces of the adjusting blocks 5, forming multi-directional limiting.

[0048] Because the vertical plate 142 and the protruding rib 42, and the locking part and the first groove 1441 are fitted with a clearance, installation and disassembly are convenient. The setting of the adjusting block 5 can effectively eliminate the above-mentioned clearance, prevent the base 14 from shaking during use, and improve the structural stability. When the roller device 1 is subjected to an external force along the length of the base 4, the protruding rib 42 transmits the force through the locking part and the first groove 1441. At the same time, the adjusting block 5 increases the contact area between the protruding rib 42 and the vertical plate 142. The upper support part 146 and the lower support part 145 support the adjusting block 5, and the lever principle is used to amplify the support force on the vertical plate 142, which significantly improves the anti-tilting ability of the roller device 1 and ensures the stability of the overall structure of the guardrail.

[0049] The beneficial effects of this embodiment are as follows: Based on embodiment 1, the connection reliability between the base and the pedestal is enhanced by the cooperation between the convex snap-fit ​​part and the first groove; the design of the adjusting block takes into account both installation flexibility and structural stability, effectively eliminating the snap-fit ​​gap; the upper support part and the lower support part further improve the anti-tilting ability of the roller device, so that the roller device can still maintain structural stability when subjected to lateral impact, and the anti-collision buffer performance and structural safety are further optimized. Example

[0050] This embodiment provides a roller device for traffic isolation barriers, which is a further optimization based on Embodiment 1. See details below. Figures 1-2 , Figure 4 As shown, it specifically includes: The base 14 is detachably and fixedly connected to the base 4. A support shaft 11 is fixedly connected to the base 14. Both ends of the support shaft 11 are provided with mounting parts. A roller 13 is rotatably mounted on the middle of the support shaft 11 between the two mounting parts. The base 4 includes a base plate 41 that contacts or is fixed to the road surface, and a protruding rib 42 fixedly provided on the base plate 41. The top of the protruding rib 42 extends to both sides to form a snap-fit ​​part. The base 14 includes a horizontal top plate 141 and a vertical snap-fit ​​plate 142 fixedly connected. The vertical snap-fit ​​plate 142 has an opening slot 144 for accommodating the protruding rib 42. The opening slot 144 has a first groove 1441 for accommodating the snap-fit ​​part on both sides along the vertical direction.

[0051] The opening groove 144 is located at the upper and lower ends of the receiving snap-fit ​​part. The edges are bent to one side to form an upper support part 146 and a lower support part 145 for abutting the upper and lower surfaces of the protrusion 42 (or it can be bent to both sides as required).

[0052] The installation process is similar to that in Example 2. First, the base 4 is fixed to the road surface. Then, the vertical clamping plate 142 is tilted so that the clamping part of the protruding rib 42 is embedded into the first groove 1441 of the opening groove 144, completing the initial clamping. At this time, the upper support part 146 formed by bending the upper and lower edges of the opening groove 144 abuts against the upper surface of the protruding rib 42, and the lower support part 145 abuts against the lower surface of the protruding rib 42, forming upper and lower limits for the protruding rib 42.

[0053] The upper support portion 146 and the lower support portion 145 are integrally formed with the vertical clamping plate 142, resulting in high structural strength. They can restrict the displacement of the base 14 relative to the base 4 from the vertical direction, while also enhancing the bending resistance of the vertical clamping plate 142. When the roller device 1 is subjected to an impact force, the upper support portion 146 and the lower support portion 145, through contact with the protruding rib 42, transfer part of the impact force to the base 4, preventing the vertical clamping plate 142 from deforming or breaking due to excessive local stress, and ensuring the stability of the connection between the base and the base.

[0054] The beneficial effects of this embodiment are as follows: Compared with embodiment 2, the structure of the upper and lower support parts is formed by directly bending the edge of the opening groove, which eliminates the need for additional adjustment blocks, simplifies the number of parts, and reduces production costs; at the same time, the one-piece molded support structure has higher strength and a simpler assembly process, further improving production and construction efficiency while ensuring anti-tilting ability and structural stability. Example

[0055] See Figures 1-4 As shown, this embodiment further optimizes the vertical clamping plate 142 based on embodiment 2 or 3. Specifically, it includes: based on the roller device described in embodiment 2 or 3, bending the bottom ends of the vertical clamping plate 142 to one or both sides to form bent lugs 143 that can be detachably connected or snapped onto the base 4. Multiple bent lugs 143 are evenly distributed at both ends of the bottom of the vertical clamping plate 142.

[0056] Based on the structure of Embodiment 2, during installation, after the engagement of the protruding ridge 42 and the opening slot 144 and the installation of the adjusting block 5 are completed, the base 14 and the base 4 are further fixed by bending the lug 143. If a detachable connection method is adopted, mounting holes can be opened on the bending lug 143, and the bending lug 143 can be fixedly connected to the base plate 41 of the base 4 by bolts or other fasteners; if a snap-fit ​​method is adopted, corresponding slots can be provided on the base plate 41, and the bending lug 143 can be snapped into the slots to achieve limiting and fixing.

[0057] The bent lug 143 extends from the bottom of the vertical clamping plate 142 to the base plate 41 of the base 4, increasing the number of connection points between the base 14 and the base 4, forming a multi-directional fixing structure. When the roller device 1 is subjected to an impact force in the vertical or horizontal direction, the bent lug 143 can share part of the force, preventing the clamping structure of the protrusion and the slot from bearing the entire load alone, reducing the risk of wear and damage to the clamping structure, and further improving the stability and durability of the connection between the base and the base.

[0058] The beneficial effects of this embodiment are as follows: by adding bent lugs, the connection reliability between the base and the pedestal is further enhanced, making the overall structure of the roller device stronger and more impact-resistant; the detachable connection or snap-fit ​​design of the bent lugs does not affect the ease of disassembly and assembly of the roller device, while providing more fixed protection for later maintenance and extending the service life of the guardrail. Example

[0059] This embodiment provides a guardrail, the structure of which is described below. Figures 1-8As shown, it specifically includes a base 4 that is placed or detachably fixedly installed on the road surface. Multiple roller devices 1 for traffic isolation guardrails, as described in any one of Embodiments 1-4, are installed on the base 4. Adjacent roller devices 1 are detachably fixedly connected to each other by a connecting plate 2. The two ends of the connecting plate 2 are detachably connected to the mounting parts of two adjacent support shafts 11, respectively.

[0060] A column 3 is also provided between two adjacent roller devices 1 to improve impact resistance. The column 3 is connected to the roller devices 1 at both ends via a connecting plate 2. The bottom of the column 3 is snapped into or detachably fixed to the base 4. Figure 5 This illustrates a configuration where the column 3 is not connected to the base 4. Figure 7 The diagram shows a structure in which the column 3 is connected to the base 4. The structure with the column 3 connected to the base 4 has higher strength, but the installation method is more complicated than that without connection. Therefore, it can be flexibly selected according to the actual application scenario.

[0061] During installation, multiple bases 4 are first fixed sequentially to preset positions on the road surface along the road extension direction according to the road length requirements. Then, roller devices 1 are installed on each base 4, following the installation process described in Examples 1-4. Next, the two ends of the connecting plate 2 are connected to the mounting portions of the support shafts 11 of two adjacent roller devices 1, respectively, and detachably fixed using bolts or other fasteners, so that multiple roller devices 1 are connected in series to form a continuous guardrail body.

[0062] For road sections that require increased impact resistance, a column 3 is added between two adjacent roller devices 1. The bottom of the column 3 is fixed to the base 4 by snap-fit ​​or fasteners. Then, the two sides of the column 3 are connected to the mounting part of the support shaft 11 of the adjacent roller device 1 by the connecting plate 2, so that the column 3 and the roller device 1 form an integral load-bearing structure.

[0063] When the guardrail is in operation, when a vehicle collides with the guardrail, it first contacts the roller 13 of the roller device 1. The roller 13 rotates to buffer and dissipate the force. At the same time, the adjacent roller devices 1 transmit the force through the connecting plate 2, so that multiple roller devices 1 share the impact load and avoid damage to a single roller device 1 due to overload. The column 3, as a reinforcing structure, can withstand greater impact force, limit the overall deformation of the guardrail, and prevent the guardrail from tilting or breaking due to impact, further improving the anti-collision level of the guardrail.

[0064] The beneficial effects of this embodiment are as follows: a continuous guardrail structure is formed by the modular combination of multiple roller devices to meet the isolation requirements of different road lengths; the detachable connection design of the connecting plate facilitates the segmented installation and maintenance of the guardrail; the addition of posts significantly improves the impact resistance of the guardrail, making it suitable for scenarios with high anti-collision requirements such as highways; at the same time, the combination structure of posts and roller devices takes into account both buffer performance and structural stability, achieving a higher level of safety protection. Example

[0065] See Figure 9 As shown, this embodiment provides another type of guardrail, specifically including: a first guardrail and a second guardrail, the first guardrail being installed at both ends of the second guardrail, the first guardrail including a base 4 that is placed or detachably fixedly installed on the road surface, the base 4 being equipped with a plurality of roller devices 1 for traffic isolation guardrails as described in any one of embodiments 1-4, two adjacent roller devices 1 being detachably fixedly connected to each other by a connecting plate 2, the two ends of the connecting plate 2 being detachably connected to the mounting portions of two adjacent support shafts 11 respectively; The second guardrail includes a base body 6 that is placed or detachably fixedly installed on the road surface. Multiple interconnected guardrail units are detachably fixedly installed on the base body 6. The guardrail units are any one of the following: grid type, baffle type, mesh type or roller device 1.

[0066] The grid-type guardrail unit uses a "frame + grid strips" structure as its core, belonging to a transparent modular component. It is adapted to the detachable installation requirements of the second guardrail's foundation in this invention. Specifically, it includes: using metal profiles (such as steel pipes or aluminum alloy profiles) bent or welded to form a rectangular or square frame; using metal round pipes, square pipes, or flat steel as the main grid components; and grid strips evenly distributed along the length or width of the frame. It also includes a reinforcing structure: some specifications of the grid-type unit will have diagonal bracing grid strips added at the diagonal positions of the frame, or reinforcing ribs set at the connection between the grid strips and the frame, improving the overall bending and impact resistance of the unit and preventing deformation during collisions. Those skilled in the art can arrange it flexibly; the structure of the grid-type guardrail unit is not unique and will not be listed here.

[0067] The baffle-type guardrail unit uses a "frame and enclosed panel" as its core structure. It is a closed or semi-closed modular component, mainly used in scenarios where it is necessary to block the view, prevent glare, or prevent foreign objects from passing through. Specifically, it includes: a frame similar in structure to the grille-type guardrail unit; enclosed panels installed in or on the frame; the panel material can be metal plate (steel plate, aluminum alloy plate), plastic plate, or composite plate; the panel thickness is designed according to the impact protection requirements; and optional auxiliary structures, such as: sealing strips or buffer pads at the connection between the panel and the frame to reduce vibration and noise, while improving waterproof performance; anti-slip pads or positioning blocks can be added to the bottom of the frame to ensure the unit fits snugly against the base after installation and prevent displacement.

[0068] Mesh fence units, with a core structure of "frame and metal mesh," are dense, transparent, modular components that balance isolation and light transmission. Specifically, they include: a frame, a mesh body made of metal or non-metal, and optional anti-corrosion structures. For example, the metal mesh and frame surfaces are typically treated with galvanizing, powder coating, or painting to improve corrosion and rust resistance, making them suitable for outdoor road use.

[0069] A bollard 7 for collecting and / or indicating traffic information is also provided between the first guardrail and the second guardrail. At least one side of the bollard 7 is provided with a first indicator unit 71 and / or a second indicator unit 72, and an information collection unit 73 is provided on the top of the bollard 7. The information collection unit 73 includes a camera unit, a photo unit, a speed measuring unit, and an audible and visual alarm unit.

[0070] During installation, based on the road scenario requirements, first determine the installation positions of the first guardrail, the second guardrail, and the bollards 7. Fix the base 4 of the first guardrail at preset positions at both ends of the road, then install the roller device 1 and connect it in series via connecting plates 2 to form the first guardrail section. Fix the base 6 of the second guardrail in the middle section of the road. Select a grid type, baffle type, mesh type, or roller device 1 as the guardrail unit according to the isolation requirements. Detachably and securely connect multiple guardrail units to the base 6 to form the second guardrail section. Fix the bollards 7 at preset positions between the first and second guardrails to complete the overall guardrail assembly.

[0071] When the guardrails are in operation, the first guardrail serves as a buffer protection section at both ends of the road, using the rotation buffer function of the roller device 1 to provide safety protection for vehicles entering and exiting the road section; the second guardrail serves as an intermediate isolation section, and achieves the corresponding isolation function according to the type of guardrail unit selected. For example, grid-type and mesh-type guardrail units have ventilation and light transmission, while baffle-type guardrail units have the function of blocking the view and preventing glare. When the roller device 1 is used as a guardrail unit, it continues the buffer protection function.

[0072] The first indicator unit 71 and the second indicator unit 72 of the isolation bollard 7 can be set as traffic signs, warning lights, etc., to indicate road direction, speed limit information, construction warnings and other traffic information, providing clear guidance for drivers and passengers; in the information collection unit 73 at the top, the camera unit and the photo taking unit can collect road traffic images in real time for traffic flow statistics, violation capture, etc.; the speed measuring unit can monitor the vehicle speed in real time, and when the vehicle exceeds the speed limit, the sound and light alarm unit is activated to issue sound and light warning signals to remind drivers and passengers to slow down and realize traffic risk warning.

[0073] The beneficial effects of this embodiment are as follows: the combined design of the first guardrail and the second guardrail realizes the differentiated isolation needs of different road sections and has stronger adaptability; the diversified selection of guardrail units can meet different functional needs such as ventilation, shading, and buffering; the isolation bollard 7 integrates traffic indication and information collection functions, enabling the guardrail to break through the traditional single isolation function and upgrade into an important part of intelligent traffic management, improving the safety and intelligence level of road traffic and adapting to the development needs of modern transportation.

[0074] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A roller device for traffic safety barriers, characterized in that, The device includes a base (14) that is detachably and fixedly connected to a base (4). A support shaft (11) is fixedly connected to the base (14). Both ends of the support shaft (11) are provided with mounting parts. A roller (13) is rotatably mounted in the middle of the support shaft (11) between the mounting parts. The base (4) is defined as a structure that is installed on the road surface and used to fix the roller device (1). It includes a base plate (41) that is in contact with or fixed to the road surface, a protrusion (42) fixedly provided on the base plate (41) for fixed engagement with the base (14), and an opening groove (144) on the base (14) for accommodating the protrusion (42).

2. The roller device for traffic isolation barriers according to claim 1, characterized in that, The top of the protruding ridge (42) extends to both sides to form a snap-fit ​​portion. The base (14) includes a horizontal top plate (141) and a vertical snap-fit ​​plate (142) that are fixedly connected. The vertical snap-fit ​​plate (142) is provided with the opening groove (144). The opening groove (144) is provided with a first groove (1441) on both sides along the vertical direction for accommodating the snap-fit ​​portion.

3. A roller device for traffic safety barriers according to claim 2, characterized in that, The opening groove (144) is provided with a second groove (1442) and a third groove (1443) on the upper and lower parts of the first groove (1441) along the vertical direction for installing the adjusting block (5).

4. A roller device for traffic safety barriers according to claim 3, characterized in that, The upper and lower ends of the vertical plate (142) are fixedly connected to an upper support (146) and a lower support (145), respectively. The upper support (146) and the lower support (145) abut against the adjusting block (5) to limit the tilt of the vertical plate (142).

5. A roller device for traffic safety barriers according to claim 2, characterized in that, The opening groove (144) is located at the upper and lower ends of the receiving end of the snap-fit ​​portion, which are bent to one or both sides to form an upper support portion (146) and a lower support portion (145) for abutting the upper and lower surfaces of the protrusion (42).

6. A roller device for traffic safety barriers according to any one of claims 2-5, characterized in that, The bottom ends of the vertical plate (142) are bent to one or both sides to form bent lugs (143) that can be detachably connected or snapped into the base (4).

7. A guardrail, comprising a base (4) for placement or detachable fixing on a road surface, characterized in that, The base (4) is equipped with a plurality of roller devices (1) for traffic isolation guardrails as described in any one of claims 1-6. Two adjacent roller devices (1) are detachably and fixedly connected by a connecting plate (2). The two ends of the connecting plate (2) are detachably connected to the mounting parts of two adjacent support shafts (11).

8. A guardrail according to claim 7, characterized in that: A column (3) is provided between two adjacent roller devices (1) to improve impact resistance. The column (3) is connected to the roller devices (1) at both ends by a connecting plate (2). The bottom of the column (3) is snapped into or detachably fixed to the base (4).

9. A guardrail, characterized in that, The system includes a first guardrail and a second guardrail. The first guardrail is installed at both ends of the second guardrail. The first guardrail includes a base (4) that is placed or detachably fixed on the road surface. The base (4) is equipped with a plurality of roller devices (1) for traffic isolation guardrails as described in any one of claims 1-6. Two adjacent roller devices (1) are detachably fixedly connected by a connecting plate (2). The two ends of the connecting plate (2) are detachably connected to the mounting parts of two adjacent support shafts (11). The second guardrail includes a base body (6) that is placed or detachably fixed on the road surface. The base body (6) is detachably fixedly equipped with a plurality of interconnected guardrail units. The guardrail units are of the grid type, baffle type, mesh type or any one of the roller devices (1).

10. A guardrail according to claim 9, characterized in that, A bollard (7) for collecting and / or indicating traffic information is also provided between the first guardrail and the second guardrail. At least one side of the bollard (7) is provided with a first indicator unit (71) and / or a second indicator unit (72), and an information collection unit (73) is provided on the top of the bollard (7). The information collection unit (73) includes a camera unit, a photo unit, a speed measuring unit and an audible and visual alarm unit.

Images