Improved structure of road isolation fence for urban planning

Abstract

The utility model relates to the technical field of urban planning roads, and discloses an improved structure of a road isolation fence for urban planning, which comprises two upright posts, two transverse plates fixed between the upright posts on two sides, buffer mechanisms arranged on the surfaces of the transverse plates, connecting mechanisms arranged on the surfaces of the upright posts, and bottom plates arranged at the bottoms of the upright posts, linear guide rails are fixed to the top of the bottom plate, sliding sleeves are slidably connected to the surfaces of the linear guide rails, the tops of the sliding sleeves are fixedly connected with the bottoms of the stand columns, baffles are fixed to the top of the bottom plate, buffer springs are fixed to the surfaces of the baffles, and one ends of the buffer springs are fixedly connected with the lower portions of the surfaces of the stand columns. The buffering mechanism comprises first compression springs, the first compression springs are fixed to the surface of the transverse plate, and the number of the first compression springs on the surface of the transverse plate is two. According to the road isolation fence for urban planning, through multi-stage buffering and modular connection design, the anti-collision performance and the installation efficiency are remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of urban planning and road technology, specifically to an improved structure for road guardrails used in urban planning. Background Technology

[0002] Road barriers are used in urban planning to separate roads and facilitate the safe operation of lanes on both sides. Existing road barriers are usually made of steel structures or cement piles. Their main function is to isolate and protect the left and right lanes on two-way roads, so that each lane can travel on its designated route and prevent accidents caused by random lane changes or driving in the wrong direction.

[0003] Utility model patent CN214613787U discloses a road safety barrier for urban planning. Two vertically positioned posts are rotatably connected to the upper center of two supporting bases via two first rotating shafts. Two horizontally positioned crossbars are fixedly connected between the two posts. A vertically positioned guardrail is fixedly connected between the two crossbars. Two buffer mechanisms are provided on the upper side of each supporting base, symmetrically positioned on both sides of each post. Each side of each post is rotatably connected to one end of each buffer mechanism via two second rotating shafts. The buffer mechanisms improve the device's anti-collision stability, prevent tipping, and enhance safety. The snap-fit ​​mechanism facilitates the fixed installation between the two devices. Installation and disassembly do not require tools, simplifying operation, saving manpower, and improving efficiency.

[0004] However, the buffer structure of the above-mentioned guardrail relies solely on the pressure-relieving spring and anti-collision protective sleeve at the bottom of the device. When subjected to a frontal impact, the impact force is directly applied to the surface of the crossbar and guardrail. The buffer structure at the bottom has a poor buffering effect, resulting in severe damage to the impacting vehicle. Therefore, we propose an improved structure for road guardrails used in urban planning. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an improved structure for road guardrails used in urban planning, so as to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0007] An improved structure for road guardrails used in urban planning includes two posts, two horizontal plates fixed between the two posts, a buffer mechanism on the surface of the horizontal plates, a connecting mechanism on the surface of the posts, a base plate at the bottom of the posts, a linear guide rail fixed to the top of the base plate, a sliding sleeve slidably connected to the surface of the linear guide rail, the top of the sliding sleeve being fixedly connected to the bottom of the posts, a baffle fixed to the top of the base plate, a buffer spring fixed to the surface of the baffle, and one end of the buffer spring being fixedly connected to the lower surface of the posts.

[0008] The buffer mechanism includes a first compression spring, which is fixed to the surface of the horizontal plate. There are two first compression springs on the surface of the horizontal plate. A connecting plate is fixed to the surface of the first compression spring. There are two connecting plates in total. Multiple arc-shaped plates are fixed between the connecting plates on the upper and lower sides. The arc-shaped plates are made of aluminum alloy.

[0009] Preferably, the connecting mechanism includes two extension plates and two connecting sleeves. The extension plates are fixed to the surface of the right column, and an extension shell is slidably connected to the surface of the extension plates. A vertical rod is fixed between the upper and lower extension shells. The connecting sleeve is fixed to the surface of the left column, and an opening is provided on the left side of the connecting sleeve surface for inserting the vertical rod.

[0010] Preferably, two support rods are fixed to the surface of the cross plate, and the support rods slide through the connecting plate.

[0011] Preferably, the connecting sleeve has a threaded bolt with a handle, and a rubber friction pad is fixed to one end of the bolt.

[0012] Preferably, both the extension shell and the extension plate have pin holes on their surfaces, and the extension plate has multiple pin holes.

[0013] Preferably, a gas strut is provided inside the buffer spring, one end of the gas strut is fixedly connected to the surface of the baffle, and the other end of the gas strut is fixedly connected to the surface of the column.

[0014] Preferably, a second compression spring is fixed to the surface of the arc-shaped plate, and a rubber arc-shaped guard plate is fixed to the surface of the second compression spring.

[0015] Compared with the prior art, the beneficial effects achieved by this utility model are:

[0016] First, this guardrail adopts a composite buffer structure of arc-shaped plates and double-layer springs. Through material deformation and elastic potential energy conversion, it achieves step-by-step absorption of impact energy. The rubber arc-shaped guard plate, as the first contact layer, can reduce vehicle surface damage, and its high friction can also suppress the slippage phenomenon after the collision. The directional bending characteristics of the aluminum alloy arc plate can convert part of the impact force into a lateral component force, reducing the frontal load intensity. The cooperation between the first compression spring and the support rod ensures the linear controllability of the buffer action, avoiding structural failure due to local overload. Combined with the slide rail and gas strut system at the bottom of the column, it forms a full-path energy dissipation mechanism from the collision point to the foundation, which significantly improves the adaptability to impacts at different speeds and reduces the frequency of maintenance and replacement.

[0017] Secondly, the connecting mechanism achieves length adjustment through the sliding cooperation between the extension plate and the extension shell. After the upright is inserted into the connecting sleeve, the connection effect of multiple guardrails is completed. This design can quickly complete the splicing of adjacent guardrails without complicated tools, adapting to different road width requirements. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a three-dimensional structural schematic diagram of the present invention from another perspective;

[0020] Figure 3 This is a schematic diagram of the buffer mechanism in this utility model;

[0021] Figure 4 This is a schematic diagram of the connecting mechanism in this utility model.

[0022] The components are as follows: 1. Column; 2. Buffer mechanism; 201. First compression spring; 202. Connecting plate; 203. Arc plate; 204. Second compression spring; 205. Rubber arc guard plate; 206. Support rod; 3. Connecting mechanism; 301. Extension plate; 302. Extension shell; 303. Column; 304. Connecting sleeve; 305. Pin hole; 306. Bolt with handle; 4. Base plate; 5. Linear guide rail; 6. Baffle; 7. Sliding sleeve; 8. Horizontal plate; 9. Buffer spring; 10. Gas strut. Detailed Implementation

[0023] The specific embodiments of this utility model will now be described in further detail with reference to the accompanying drawings.

[0024] Please see Figure 1-4An improved structure for road guardrails used in urban planning includes two posts 1, two horizontal plates 8 fixed between the two posts 1, a buffer mechanism 2 provided on the surface of the horizontal plates 8, a connecting mechanism 3 provided on the surface of the posts 1, a base plate 4 provided at the bottom of the posts 1, a linear guide rail 5 fixed at the top of the base plate 4, a sliding sleeve 7 slidably connected to the surface of the linear guide rail 5, the top of the sliding sleeve 7 being fixedly connected to the bottom of the posts 1, a baffle 6 fixed at the top of the base plate 4, a buffer spring 9 fixed on the surface of the baffle 6, and one end of the buffer spring 9 being fixedly connected to the lower surface of the posts 1.

[0025] The buffer mechanism 2 includes a first compression spring 201, which is fixed to the surface of the horizontal plate 8. There are two first compression springs 201 on the surface of the horizontal plate 8. A connecting plate 202 is fixed to the surface of the first compression spring 201. There are two connecting plates 202 in total. Multiple arc-shaped plates 203 are fixed between the upper and lower connecting plates 202. The arc-shaped plates 203 are made of aluminum alloy.

[0026] Through the above technical solution, the column 1 is slidably connected to the linear guide rail 5 and the sliding sleeve 7 on the base plate 4. When the column 1 is impacted, the sliding sleeve 7 slides backward along the linear guide rail 5, causing the buffer spring 9 to compress. This design disperses the impact energy through the dual effects of sliding displacement and elastic deformation, reduces the rigidity of the column 1, reduces the damage of instantaneous peak load to vehicles and guardrails, and improves road safety. In the buffer mechanism 2, the connecting plate 202 achieves forward and backward displacement through the elastic deformation of the first compression spring 201. The arc plate 203 serves as a rigid support structure, and its aluminum alloy material combines lightweight and high strength characteristics. When a vehicle impacts, the arc plate 203 disperses the impact force through deformation, while the compression of the first compression spring 201 further absorbs energy. The cooperation between the first compression spring 201 and the arc plate 203 forms a multi-level buffer, reducing the damage to the front of the vehicle from direct impact, while protecting the integrity of the main structure of the guardrail.

[0027] The connecting mechanism 3 includes two extension plates 301 and two connecting sleeves 304. The extension plates 301 are fixed to the surface of the right column 1. An extension shell 302 is slidably connected to the surface of the extension plates 301. A column 303 is fixed between the upper and lower extension shells 302. The connecting sleeves 304 are fixed to the surface of the left column 1. An opening is provided on the left side of the surface of the connecting sleeves 304 for inserting the column 303.

[0028] Through the above technical solution, the connecting mechanism 3 achieves length adjustment through the sliding cooperation between the extension plate 301 and the extension shell 302. After the upright 303 is inserted into the connecting sleeve 304, the connection effect of multiple guardrails is completed. This design can quickly complete the splicing of adjacent guardrails without complicated tools, and adapts to different road width requirements.

[0029] Two support rods 206 are fixed to the surface of the horizontal plate 8, and the support rods 206 slide through the connecting plate 202.

[0030] Through the above technical solution, the design of the support rod 206 penetrating the connecting plate 202 restricts the movement trajectory of the connecting plate 202 and prevents it from shifting laterally due to impact.

[0031] The connecting sleeve 304 has a threaded thread through it with a shank bolt 306, and a rubber friction pad is fixed to one end of the shank bolt 306.

[0032] Through the above technical solution, the threaded connection of the shank bolt 306 combined with the rubber friction pad achieves the fixation of the pole 303 and the connecting sleeve 304 through mechanical locking. The rubber material increases the friction of the contact surface, reducing the dependence on special tools. It is particularly suitable for rapid repair and adjustment at road construction sites.

[0033] Both the extension shell 302 and the extension plate 301 have pin holes 305 on their surfaces, and the extension plate 301 has multiple pin holes 305 on its surface.

[0034] With the above technical solution, after adjusting the movable length of the extension shell 302, the position of the extension shell 302 can be locked by using a bolt through the pin hole 305 and installing a nut.

[0035] A gas strut 10 is provided inside the buffer spring 9. One end of the gas strut 10 is fixedly connected to the surface of the baffle 6, and the other end of the gas strut 10 is fixedly connected to the surface of the column 1.

[0036] Through the above technical solution, the parallel arrangement of the gas strut 10 and the buffer spring 9 forms a composite buffer system; when the column 1 is impacted, the gas strut 10 generates a progressive damping force through internal gas compression, which is superimposed with the linear elastic force of the buffer spring 9, resulting in more stable long-term performance compared to a pure mechanical spring.

[0037] A second compression spring 204 is fixed to the surface of the arc-shaped plate 203, and a rubber arc-shaped guard plate 205 is fixed to the surface of the second compression spring 204.

[0038] Through the above technical solution, the second compression spring 204 connects the arc-shaped plate 203 and the rubber arc-shaped guard plate 205 to form an outer flexible protective layer; when a minor collision occurs, the rubber arc-shaped guard plate 205 absorbs energy through its own deformation, and the second compression spring 204 is further compressed when there is a larger impact; the rubber material can reduce scratches on the vehicle paint surface, and its high coefficient of friction can also reduce the probability of secondary collisions; the double-layer spring structure realizes the stepwise absorption of impact energy, taking into account both the repairability of low-speed collisions and the safety of high-speed collisions.

[0039] In use, when a vehicle impacts the guardrail, it first contacts the rubber arc-shaped guard plate 205. Its flexible surface absorbs the initial kinetic energy through deformation and reduces the pressure at the contact point. The impact force is transmitted to the second compression spring 204, causing it to compress and simultaneously pushing the arc-shaped plate 203 towards the horizontal plate 8. During deformation, the aluminum alloy structure of the arc-shaped plate 203 converts some of the impact energy into elastic potential energy, which is then compressed by the connecting plate 202 against the first compression spring 201. At this time, the support rod 206 guides the connecting plate 202 to move in a straight line, ensuring effective transmission of the buffering force. The horizontal plate 8 disperses the remaining impact force to the two side columns 1, and the bottom sliding sleeve 7 of the column 1 moves along... The linear guide rail 5 slides backward, compressing the buffer spring 9 and driving the gas strut 10 to retract. The gas pressure inside the gas strut 10 increases with the stroke, forming a nonlinear damping effect, which, together with the buffer spring 9, prolongs the impact time. If the impact force continues to increase, the extension plate 301 and the extension shell 302 can allow adjacent guardrail units to move in coordination through the connecting sleeve 304 structure. Throughout the process, the guiding deformation of the arc plate 203, the step-by-step compression of the multi-stage springs, the displacement of the slide rail system, and the multi-dimensional effect of the composite damping of the gas strut 10 achieve efficient dissipation and redistribution of impact energy, minimizing the risk of structural damage and vehicle destruction.

[0040] Although specific embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these specific embodiments without departing from the principles and spirit, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An improved structure for road guardrails used in urban planning, comprising two posts (1), characterized in that: Two horizontal plates (8) are fixed between the two columns (1). A buffer mechanism (2) is provided on the surface of the horizontal plate (8). A connecting mechanism (3) is provided on the surface of the column (1). A base plate (4) is provided at the bottom of the column (1). A linear guide rail (5) is fixed at the top of the base plate (4). A sliding sleeve (7) is slidably connected to the surface of the linear guide rail (5). The top of the sliding sleeve (7) is fixedly connected to the bottom of the column (1). A baffle (6) is fixed at the top of the base plate (4). A buffer spring (9) is fixed on the surface of the baffle (6). One end of the buffer spring (9) is fixedly connected to the lower surface of the column (1). The buffer mechanism (2) includes a first compression spring (201), which is fixed to the surface of the horizontal plate (8). There are two first compression springs (201) on the surface of the horizontal plate (8). A connecting plate (202) is fixed to the surface of the first compression spring (201). There are two connecting plates (202) in total. Multiple arc plates (203) are fixed between the connecting plates (202) on the upper and lower sides. The arc plates (203) are made of aluminum alloy.

2. The improved structure of a road guardrail for urban planning according to claim 1, characterized in that: The connecting mechanism (3) includes two extension plates (301) and two connecting sleeves (304). The extension plates (301) are fixed to the surface of the right column (1). An extension shell (302) is slidably connected to the surface of the extension plates (301). A column (303) is fixed between the upper and lower extension shells (302). The connecting sleeves (304) are fixed to the surface of the left column (1). An opening is provided on the left side of the connecting sleeve (304) for inserting the column (303).

3. The improved structure of a road safety barrier for urban planning according to claim 1, characterized in that: Two support rods (206) are fixed on the surface of the horizontal plate (8), and the support rods (206) slide through the connecting plate (202).

4. An improved structure for road guardrails used in urban planning according to claim 2, characterized in that: The connecting sleeve (304) has a threaded bolt (306) through its surface, and a rubber friction pad is fixed to one end of the bolt (306).

5. An improved structure for road guardrails used in urban planning according to claim 2, characterized in that: Both the extension shell (302) and the extension plate (301) have pin holes (305) on their surfaces, and the extension plate (301) has multiple pin holes (305) on its surface.

6. The improved structure of a road guardrail for urban planning according to claim 1, characterized in that: A gas strut (10) is provided inside the buffer spring (9). One end of the gas strut (10) is fixedly connected to the surface of the baffle (6), and the other end of the gas strut (10) is fixedly connected to the surface of the column (1).

7. An improved structure for road guardrails used in urban planning according to claim 1, characterized in that: A second compression spring (204) is fixed to the surface of the arc-shaped plate (203), and a rubber arc-shaped guard plate (205) is fixed to the surface of the second compression spring (204).

Images